阅读说明：本技术 工具机开关装置 (Switching device for machine tool ) 是由 T·孔奇克 G·戴维 M·林 于 2020-03-24 设计创作，主要内容包括：本发明的出发点是一种工具机开关装置、尤其是用于能推动的园艺器具的工具机开关装置,其用于电子控制至少一个工具机的至少一个电驱动单元(12),所述工具机开关装置具有至少一个机械式的操纵单元(16；16’)和至少一个电子器件单元(18),所述电子器件单元设计用于根据通过操纵单元(16；16’)进行的操纵输出至少一个信号、尤其是至少一个控制信号。提出,工具机开关装置包括至少一个与操纵单元(16；16’)作用连接的传动单元(20；20’),所述传动单元设置用于尤其是机械地调设操纵单元(16；16’)的操纵位移与操纵单元(16；16’)的开关位移之间的比例。(The invention relates to a power tool switching device, in particular for a drivable garden appliance, for electronically controlling at least one electric drive unit (12) of at least one power tool, comprising at least one mechanical actuating unit (16; 16 ') and at least one electronics unit (18) which is designed to output at least one signal, in particular at least one control signal, as a function of an actuation by the actuating unit (16; 16'). It is proposed that the machine tool switching device comprises at least one transmission unit (20; 20 ') operatively connected to the actuating unit (16; 16'), which transmission unit is provided for, in particular, mechanically adjusting the ratio between the actuating displacement of the actuating unit (16; 16 ') and the switching displacement of the actuating unit (16; 16').)

1. A machine tool switching device, in particular for a drivable gardening implement, for electronically controlling at least one electric drive unit (12) of at least one machine tool, having at least one mechanical actuating unit (16; 16 ') and at least one electronics unit (18) which is designed to output at least one signal, in particular at least one control signal, as a function of an actuation by means of the actuating unit (16; 16'), characterized in that at least one transmission unit (20; 20 ') is provided which is operatively connected to the actuating unit (16; 16'), which is provided to set a ratio between an actuating displacement of the actuating unit (16; 16 ') and a switching displacement of the actuating unit (16; 16'), the setting is in particular carried out mechanically.

2. The power tool switching device according to claim 1, characterized in that the transmission unit (20; 20 ') is provided for providing a switching displacement of the actuating unit (16; 16 ') which is shorter than an actuating displacement of the actuating unit (16; 16 '), in particular until a switching point of the electronics unit (18) is reached.

3. The machine tool switching device according to claim 1 or 2, characterized in that the transmission unit (20; 20 ') comprises at least one pressing and/or pulling element (22, 24; 22 ', 24 ') which is provided for setting a switching movement of the actuating unit (16; 16 ') and/or for returning the actuating unit (16; 16 ') into an unactuated starting position.

4. The machine tool switching device according to one of the preceding claims, characterized in that the transmission unit (20, 20 ') comprises at least two pressing and/or pulling elements (22, 24; 22 ', 24 '), wherein at least one first pressing and/or pulling element (22; 22 ') is configured as a tension spring and at least one second pressing and/or pulling element (24; 24 ') is configured as a compression spring.

5. The machine tool switching device according to one of the preceding claims, characterized in that the actuating unit (16; 16 ') comprises at least one sliding element (26; 26') which is operatively connected to the transmission unit (20; 20 ') for actuating at least one switching element (28, 30), in particular a microswitch, of the electronics unit (18), wherein a geometric configuration of the sliding element (26; 26') has an influence on a switching displacement of the actuating unit (16; 16 ') relative to a maximum actuating displacement (32) of the sliding element (26; 26'), in particular until a switching point of the electronics unit (18) is reached.

6. The machine tool switching device according to claim 5, characterized in that the sliding element (26; 26 ') and/or the transmission unit (20; 20') are designed such that a switching displacement of the actuating unit (16; 16 ') corresponds to at most 30% of a maximum actuating displacement (32) of the sliding element (26; 26'), in particular until a switching point of the electronics unit (18) is reached.

7. The power tool switching device according to claim 5 or 6, characterized in that the actuating unit (16; 16 ') comprises at least one actuating element (34; 34 '), in particular at least one actuating cable, operatively connected to the transmission unit (20; 20 ') for actuating the sliding element (26; 26 '), wherein a switching displacement of the actuating unit (16; 16 ') relative to a maximum actuating displacement (36) of the actuating element (34; 34 ') depends on the configuration of the transmission unit (20; 20 '), in particular until a switching point of the electronics unit (18) is reached.

8. The machine tool switching device according to claim 7, characterized in that the transmission unit (20; 20 ') is designed such that a switching displacement of the actuating unit (16; 16 ') corresponds to at most 15% of a maximum actuating displacement (36) of the actuating element (34; 34 '), in particular until a switching point of the electronics unit (18) is reached.

9. The machine tool switching device according to one of the preceding claims, characterized in that at least one housing unit (38) is provided, which has at least one receiving region (40, 42), in particular at least one receiving channel, in which the transmission unit (20; 20 ') and/or the actuating unit (16; 16') can be arranged.

10. The power tool switching device according to claim 9, characterized in that the at least one receiving region (42) is provided for at least one further actuating element (44) of the actuating unit (16) to extend through the entire housing unit (38) in a manner that is non-operatively connected to the electronics unit (18) and in particular is non-geared.

11. The machine tool switching device according to claim 10, wherein the housing unit (38) delimits at least one opening (46) which opens into the at least one receiving region (42) and which makes it possible to introduce the at least one further actuating element (44) of the actuating unit (16) into the at least one receiving region (42) in the closed state of the housing unit (38).

12. The power tool switching device according to claim 11, characterized in that the housing unit (38) at least in sections forms at least one guide region (48) for guiding the further actuating element (44) to the opening (46), which guide region is in particular funnel-shaped.

13. Machine tool switching device according to one of the preceding claims, characterized in that at least one output unit (50) is provided, which is provided for outputting at least one switching state and/or charging state of the electronics unit (18), in particular optically, acoustically, and/or tactually.

14. The power tool switching device according to one of the preceding claims, wherein at least one secondary operating unit (52) is provided, wherein the electronics unit (18) is designed to output at least one signal as a function of the operation by the operating unit (16; 16') and the secondary operating unit (52).

15. Machine tool, in particular a pushable garden appliance, having at least one electric drive unit (12) and at least one machine tool switching device, in particular according to one of the preceding claims, characterized in that the machine tool switching device is designed for electronic control of the electric drive unit (12).

Technical Field

Background

A power tool switching device, in particular for a pushable garden appliance, for electronically controlling at least one electric drive unit of at least one power tool, has already been proposed, which has at least one mechanical actuating unit and at least one electronics unit, which is designed to output at least one signal, in particular at least one control signal, as a function of an actuation by the actuating unit.

Disclosure of Invention

The starting point of the invention is a machine tool switching device, in particular for a pushable garden appliance, for electronically controlling at least one electric drive unit of at least one machine tool, having at least one mechanical actuating unit and at least one electronics unit. The electronics unit is designed to output at least one signal, in particular at least one control signal, as a function of the actuation by the actuation unit.

It is proposed that the power tool switching device comprises at least one transmission unit operatively connected to the actuating unit, which transmission unit is provided for, in particular mechanically, adjusting a ratio between an actuating displacement of the actuating unit and a switching displacement of the actuating unit.

The machine tool is preferably designed as a retrofit machine tool. The power tool has in particular at least one electric drive unit, in particular comprising an electric motor, which replaces at least one drive unit originally present in the power tool and having an internal combustion engine. The power tool is preferably designed as a garden tool, in particular as a lawn mower. The power tool can also be embodied in particular as a motorized hedge trimmer, a pole trimmer, a chain saw, a power tool other than a garden tool, in particular a hand-held power tool, as an example as a jigsaw, a circular saw, a power drill or the like, or as another power tool which is considered appropriate by the person skilled in the art. The power tool switching device is preferably designed for electronically controlling at least one electric drive unit of the power tool, which is provided for driving at least one processing unit of the power tool, such as a mowing mechanism, a saw chain, a cutting tool, etc. Alternatively or additionally, it is conceivable that the power tool switching device is designed for electronically controlling at least one further electric drive unit of the power tool, which is provided for driving at least one forward unit of the power tool, for example a drive wheel of the power tool in the form of a lawn mower. "provided" is to be understood in particular to mean specially equipped and/or specially designed. "design" is to be understood in particular as meaning special programming and/or special planning. "an object is provided or designed for a specific function" is to be understood in particular as: the object implements and/or implements the particular functionality in at least one application and/or runtime state.

The power tool switching device, in particular the housing unit of the power tool switching device, is preferably designed as a box, a cartridge or the like. Preferably, the power tool switching device, in particular the housing unit, can be fastened to the power tool, in particular by the power tool or a user of the power tool switching device. Preferably, the power tool switching device, in particular the housing unit, can be fastened to the power tool without tools. The power tool preferably has at least one operating element, such as an operating lever, operating switch or the like, which was previously provided for actuating a drive unit originally present in the power tool and having an internal combustion engine. Preferably, the operating element has at least two different states, between which the operating element can be moved by a certain displacement distance, for example moved, swung or the like. Preferably, the actuating unit, in particular at least one actuating element of the actuating unit, can be coupled to the actuating element. The actuating element is preferably designed as an actuating cable, an actuating wire or the like. The actuating element coupled to the actuating element, in particular the pulling actuating element, is preferably actuated as a function of the actuation of the actuating element of the power tool. Preferably, the actuating element is operatively connected to at least one further element of the actuating unit, in particular a sliding element, which is provided in particular for actuating the electronics unit. Alternatively, it is conceivable for the actuating element to be provided for actuating the electronics unit. An "electronics unit" is to be understood to mean, in particular, a unit having at least one control electronics. The term "control electronics" is to be understood to mean, in particular, a unit having a processor unit, a memory unit and an operating program stored in the memory unit.

The electronics unit preferably has at least one switching element, for example a microswitch (mikrochalter), a potentiometer, a relay, etc. Preferably, the actuating unit, in particular the sliding element, is provided for actuating the switching element of the electronics unit as a function of the actuation of the actuating element. It is exemplary conceivable to move an actuating element, in particular a sliding element, which actuates a switching element of the electronics unit as a function of the movement, as a function of the actuation of the actuating element. Preferably, the switching element, in particular the switching element embodied as a microswitch, has at least two switching states, wherein in a first switching state a signal for deactivating the electric drive unit is output and in a second switching state a signal for activating the electric drive unit is output. Alternatively, it is conceivable for the switching element, in particular the switching element embodied as a potentiometer, to have a plurality of switching states, in particular continuously variable switching states, wherein different signals for setting different rotational speeds to the electric drive unit are output, for example, depending on the different switching states. The electronics unit can in particular have a plurality of switching elements, in particular corresponding to the number of actuating units of the power tool switching device. Preferably, the electronics unit has at least one circuit board on which the at least one switching element is arranged. Preferably, the electronics unit comprises at least one signal line element, in particular a cable, which can be electrically connected, in particular, to the electric drive unit. Preferably, the electronics unit is designed to output a signal to the electric drive unit via a signal line element.

Preferably, the power tool switching device can have a plurality of transmission units, the number of which in particular corresponds to the number of actuating units. The term "actuating displacement of the actuating unit" is to be understood in particular as meaning the maximum displacement distance over which the actuating unit, in particular the actuating element of the actuating unit, is moved as a function of the actuation of the actuating element. In particular, the actuating displacement of the actuating unit is dependent on the displacement distance between at least two switching states of the actuating element. In particular, the actuating displacement of the actuating unit can be different on different power tools, in particular with different displacement distances between at least two switching states of the actuating element. The term "switching movement of the actuating unit" is to be understood in particular as meaning the maximum movement distance over which the actuating unit, in particular the sliding element of the actuating unit, is moved between at least two switching states of the electronics unit. Preferably, the transmission unit is provided for predetermining an at least substantially constant switching displacement independently of an actuating displacement of the actuating unit, in particular independently of different actuating elements on different power tools. The transmission unit is preferably designed as a mechanical transmission unit, which in particular has mechanical elements for setting the ratio between the actuating displacement and the switching displacement. In particular, the transmission unit has at least one pressing and/or pulling element, preferably a plurality of pressing and/or pulling elements, which are operatively connected to the actuating unit, in particular to the actuating element and/or the sliding element. The at least one pressure and/or tension element, in particular a spring, a pressure cylinder or the like, is provided in particular for loading the actuating element and/or the sliding element with pressure and/or tension. Alternatively or additionally, it is conceivable for the mechanical transmission unit to have a gear, a cable traction system or the like for setting the ratio between the actuating displacement and the switching displacement. It is further alternatively conceivable that the transmission unit is designed as an at least partially electrical, in particular electromechanical, transmission unit, in particular having at least one actuator for setting the ratio between the actuating displacement and the switching displacement; a hydraulic drive unit, which is in particular provided with at least one hydraulic cylinder for setting the ratio between the actuating displacement and the switching displacement; or as a pneumatic transmission unit, in particular with at least one pneumatic cylinder for setting the ratio between the actuating displacement and the switching displacement.

The configuration of the power tool switching device according to the invention advantageously enables the ratio between the actuating displacement of the actuating unit and the switching displacement of the actuating unit to be set. Advantageously, a compact and easily mountable power tool switching device can be provided. Advantageously, a machine tool switching device can be provided which can be used with a plurality of different machine tools having different actuating elements, in particular having different displacement distances between at least two switching states of the actuating element, and/or a different number of electric drive units.

Furthermore, it is proposed that the transmission unit be provided for providing a switching displacement of the actuating unit, in particular up to the switching point of the electronics unit, which is shorter than the actuating displacement of the actuating unit. A "switching point of an electronics unit" is to be understood to mean, in particular, an end point of a switching movement at which a switching element of the electronics unit, in particular having two switching states, switches from a first switching state to a second switching state. Depending on the machine tool used with the machine tool switching device, in particular depending on the operating element of the machine tool, the actuating displacement of the actuating unit can be at least 5 cm, at least 10 cm, at least 20 cm or at least 30 cm long, for example. In particular, the transmission unit is provided to provide a switching displacement of the actuating unit of at most 2 cm, preferably at most 1.5 cm, particularly preferably at most 1 cm and very particularly preferably at most 0.5 cm. A defined switching displacement can advantageously be predefined. Advantageously, a compact design of the machine tool switching device can be provided.

It is furthermore proposed that the transmission unit comprises at least one pressure roller andand/or a pull element, which is provided for setting a switching movement of the actuating unit and/or for returning the actuating unit into an unactuated starting position. Preferably, the at least one pressure and/or tension element is designed as a spring, in particular as a compression spring or a tension spring. The at least one pressure and/or tension element is preferably designed as a helical spring. The at least one pressing and/or pulling element is preferably designed as a metal spring. Alternatively, it is conceivable for the at least one pressure and/or tension element to be designed as a rubber spring, an air spring, a gas pressure spring or other pressure and/or tension elements which are considered appropriate by the person skilled in the art. The at least one pressure and/or tension element is preferably operatively connected, in particular mechanically coupled, to the actuating unit, in particular to the actuating element and/or to the sliding element. The transmission unit preferably has at least two pressure and/or tension elements, wherein at least one of the pressure and/or tension elements is mechanically coupled to the actuating element and at least one other of the pressure and/or tension elements is mechanically coupled to the sliding element. In particular, the switching displacement is dependent on a parameter of the at least one pressure and/or tension element, in particular a pressure and/or tension force, for example a spring forceLength, etc. In particular, the switching displacement can be set by adapting parameters of the at least one pressure and/or tension element, in particular a pressure and/or tension force, for example a spring force, a length, etc. The at least one pressure and/or tension element is preferably provided for applying a restoring force to the actuating unit, in particular to the actuating element and/or the sliding element, in particular in the switching position actuated in particular by the actuating element. The at least one push and/or pull element is provided in particular for returning the actuating unit, in particular the actuating element and/or the sliding element, from the actuated switching position into an unactuated starting position, in particular pulling or pushing into the unactuated starting position, as a function of the release of the actuation. The adjustability of the switching displacement can advantageously be achieved.

It is further proposed that the transmission unit comprises at least two pressure and/or tension elements, in particular the aforementioned pressure and/or tension elements, wherein at least one first pressure and/or tension element is designed as a tension spring and at least one second pressure and/or tension element is designed as a compression spring. Preferably, the first pressure and/or tension element is directly operatively connected to the sliding element, in particular mechanically coupled to the sliding element. Preferably, the second pressure and/or tension element is directly operatively connected to the actuating element, in particular mechanically coupled to the actuating element. Preferably, the first pressure and/or tension element and the second pressure and/or tension element are arranged, in particular in the housing unit, in such a way that a force direction in which the first pressure and/or tension element acts on the actuating unit, in particular the sliding element, with a force, in particular a tensile force, and a further force direction in which the second pressure and/or tension element acts on the actuating unit, in particular the actuating element, with a force, in particular a compressive force, extend at least substantially parallel to one another. "substantially parallel" is to be understood to mean, in particular, an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation relative to the reference direction of, in particular, less than 8 °, advantageously less than 5 °, and particularly advantageously less than 2 °. Preferably, the force direction and the further force direction are directed counter to an actuation direction in which the actuation unit is moved as a function of an actuation, in particular an actuation via an actuating element. In particular, the force direction and the further force direction extend at least substantially antiparallel to the actuation direction. In particular, the second pressure and/or tension element is provided for applying a pressure force acting against the actuating direction to the actuating element. In particular, the first pressure and/or tension element is provided for applying a tensile force acting against the actuating direction to the sliding element. The first press and/or pull element is preferably fastened to one wall of the sliding element and the housing unit. The first pressing and/or pulling element is in particular provided for pulling the sliding element in a direction towards the wall. The second press and/or pull element is preferably supported on the sliding element. The second pressing and/or pulling element is provided in particular for pressing the actuating element against the sliding element, in particular in the direction of the wall. Preferably, the ratio between the actuating displacement and the switching displacement can be set by adapting parameters of the pressure and/or tension elements, in particular the pressure and/or tension forces, for example the spring force, the length, the arrangement relative to one another, etc. Advantageously, a flexibly adaptable transmission unit can be provided for setting the ratio between the actuating displacement and the switching displacement.

Furthermore, it is proposed that the actuating unit comprises at least one sliding element, in particular the aforementioned sliding element, which is operatively connected to the transmission unit for actuating at least one switching element, in particular a microswitch, of the electronics unit, wherein the geometric configuration of the sliding element influences the switching displacement of the actuating unit, in particular up to the switching point of the electronics unit, relative to a maximum actuating displacement of the sliding element. The term "maximum adjustment displacement of the sliding element" is to be understood in particular as meaning the displacement distance over which the sliding element can be moved to the maximum, in particular depending on the spatial conditions in the housing unit. In particular, the maximum adjustment displacement of the sliding element is independent of the actuating displacement of the actuating unit. In particular, the sliding element has the same maximum adjustment displacement independently of the machine tool used with the machine tool switching device. The sliding element is preferably provided for actuating a switching element of the electronics unit. The sliding element is provided in particular for moving a switching tongue of the switching element, in particular transversely to the force direction and the further force direction. Preferably, at least one contact of the switching element, in particular in the form of a microswitch, is closed by a movement of the switching tongue and/or the resistance value of the switching element, in particular in the form of a potentiometer, is changed. The sliding element preferably has at least one actuating projection which is provided for actuating the switching element, in particular for moving a switching tongue of the switching element. The length of the switching movement, in particular up to the length of the maximum actuating movement of the sliding element, up to the switching point, depends in particular on the geometry of the sliding element, in particular of the actuating projection. It is exemplary conceivable that a sliding element, in particular an actuating projection, having a large maximum extent transversely to the force direction and the further force direction actuates the switching element after a shorter switching displacement, in particular relative to a maximum actuating displacement of the sliding element, than a further sliding element, in particular a further actuating projection, having a small maximum extent transversely to the force direction and the further force direction. It is exemplary conceivable that the sliding element, which has the actuating projection further forward than the further sliding element, as viewed in the force direction and the further force direction, actuates the switching element after a shorter switching displacement, in particular relative to a maximum adjustment displacement of the sliding element. Advantageously, a fine adjustment of the switching displacement can be achieved with respect to the maximum adjustment displacement of the sliding element.

Furthermore, it is proposed that the sliding element and/or the transmission unit are designed such that a switching displacement of the actuating unit, in particular up to a switching point of the electronics unit, corresponds to at most 30% of a maximum actuating displacement of the sliding element. In particular, the sliding element and/or the transmission unit is designed such that a switching displacement of the actuating unit, in particular up to a switching point of the electronics unit, corresponds to at most 30%, preferably at most 20% and particularly preferably at most 10% of a maximum actuating displacement of the sliding element. In particular, the sliding element and/or the transmission unit is designed such that the sliding element actuates the switching element of the electronics unit at the latest after the sliding element has moved 30% of the maximum adjustment displacement of the sliding element. The switching displacement, in particular the switching point, can advantageously be coordinated.

It is furthermore proposed that the actuating unit comprises at least one actuating element, in particular the aforementioned actuating element, in particular at least one actuating cable, operatively connected to the transmission unit for actuating the sliding element, wherein the switching displacement of the actuating unit, in particular up to the switching point of the electronics unit, relative to the maximum actuating displacement of the actuating element is dependent on the configuration of the transmission unit. The term "maximum adjustment displacement of the actuating element" is to be understood in particular as meaning the maximum possible displacement distance of the actuating element, which can be moved, in particular as a function of the actuating displacement of the actuating unit. In particular, the maximum actuating displacement of the actuating element depends on the geometry of the operating element, in particular of the operating element, of the power tool used with the power tool switching device. In particular, the actuating element can have different maximum adjustment displacements depending on the different machine tools, in particular the different actuating elements. Preferably, the switching displacement, in particular up to the switching point of the electronics unit, in particular relative to the maximum actuating displacement of the actuating element, is dependent on the configuration, in particular the parameters, of the first pressure and/or tension element and of the second pressure and/or tension element. It is exemplary conceivable that a transmission unit with a first pressure and/or tension element having a spring force which is smaller than that of a second pressure and/or tension element provides a shorter switching displacement, in particular with respect to a maximum actuating displacement of the actuating element, than a further transmission unit with a first pressure and/or tension element having a spring force which is greater than that of the second pressure and/or tension element. Advantageously, a fine adjustment of the switching displacement can be achieved with respect to the maximum adjustment displacement of the actuating element.

Furthermore, it is proposed that the transmission unit is designed such that a switching displacement of the actuating unit, in particular up to a switching point of the electronics unit, corresponds to at most 15% of a maximum actuating displacement of the actuating element. In particular, the transmission unit is designed such that a switching displacement of the actuating unit, in particular up to a switching point of the electronics unit, corresponds to at most 15%, preferably at most 10% and particularly preferably at most 5% of a maximum actuating displacement of the actuating element. In particular, the transmission unit is designed such that the actuating unit, in particular the sliding element, actuates the switching element of the electronics unit at the latest after the actuating element has moved 15% of the maximum actuating displacement of the actuating element. Advantageous coordination of the switching displacements, in particular the switching points, can be achieved.

Furthermore, it is proposed that the power tool switching device comprises at least one housing unit, in particular the aforementioned housing unit, which has at least one receiving region, in particular at least one receiving channel, in which the transmission unit and/or the actuating unit can be arranged. The housing unit is preferably box-shaped in the assembled state. The housing unit is preferably made of plastic. It is alternatively conceivable for the housing unit to be made of composite material, metal or other materials which are considered to be expedient by the person skilled in the art. Preferably, the transmission unit, the actuating unit and/or the electronics unit are arranged at least partially within the housing unit, in particular within at least one receiving section of the housing unit. Preferably, the housing unit has at least one fastening section, which is arranged separately from the receiving section and is provided for fastening to the power tool. Preferably, at least one component of the power tool, in particular a rod, extends through the fastening section in the state in which the housing unit is fastened to the power tool. The housing unit has in particular at least two, preferably at least three and particularly preferably at least four housing parts which are fixed to one another in particular by means of fixing elements of the power tool switching device, in particular by means of screws.

Preferably, the housing unit can have a plurality of receiving areas, the number of which in particular corresponds to the number of actuating elements. The at least one receiving area is preferably delimited by a plurality of rib elements of at least one housing part of the housing unit. The at least one receiving region is preferably provided for at least completely receiving the first pressure and/or tension element, the second pressure and/or tension element and the sliding element. The at least one receiving region is designed in particular for receiving the first pressure and/or tension element, the second pressure and/or tension element and the sliding element in a precisely fitting manner. The at least one receiving area is preferably provided for receiving the actuating element at least in sections. In particular, the actuating element extends partially within the at least one receiving region and partially outside the at least one receiving region, in particular outside the housing unit. In particular, the housing unit, in particular at least one housing part of the housing unit, has at least one through-opening, through which the actuating element can extend out of the housing unit, in particular the receiving region. Preferably, the first press and/or pull element, the second press and/or pull element and the sliding element are arranged at least substantially without play in the at least one receiving area in the assembled state of the housing unit in a direction transverse to the force direction of the first press and/or pull element and in a direction transverse to the further force direction of the second press and/or pull element. A space-saving arrangement of at least a part of the transmission unit and the actuating unit can advantageously be achieved. Advantageously, a compact design of the machine tool switching device can be provided.

Furthermore, it is proposed that the at least one receiving region is provided for at least one further actuating element of the actuating unit to extend through the entire housing unit in a manner which is not operatively connected to the electronics unit and in particular is free of a transmission. The further actuating element can preferably be configured at least substantially similarly to the actuating element with regard to shaping, material composition, etc. The further actuating element is preferably longer than the actuating element. In the assembled state of the actuating element 60 of the power tool used with the power tool switching device, the further actuating element preferably extends to a drive unit, in particular a drive unit having an internal combustion engine, which can be actuated by the further actuating element. In particular, the further actuating element is provided for mechanically actuating a drive unit, which is in particular of a different design than the electric drive unit. The drive unit can be provided in particular as an advancing unit for driving the power tool. For example, it is conceivable for the drive unit to have a pulley for driving the advancing unit, and for the further actuating element to be provided for adjusting the diameter of the pulley. Preferably, the housing unit, in particular the at least one housing part of the housing unit, has at least one further through-opening through which the further actuating element 44 can extend. Preferably, the through-opening and the further through-opening are arranged on two walls of the housing unit, in particular of the at least one housing part, which walls face away from one another. Preferably, the at least one receiving region is configured without a sliding element, a first pressure and/or tension element and a second pressure and/or tension element for the further actuating element to pass through. Preferably, the at least one receiving area is provided for receiving the further actuating element or the transmission unit and the actuating unit in an exchangeable manner. Advantageously, a modular machine tool switching device can be provided, which advantageously enables a convenient use with different drive units.

It is furthermore proposed that the housing unit delimits at least one opening to the at least one receiving region, which opening makes it possible to introduce the at least one further actuating element of the actuating unit into the at least one receiving region in the closed state of the housing unit. The term "closed state of the housing unit" is to be understood in particular to mean a state of the housing unit: in this state, the at least two housing parts of the housing unit forming the receiving section are fixed to one another. Preferably, the closed state of the housing unit differs from the state in which the housing unit is mounted on the machine tool. In particular, the opening is closed by at least one stationary housing part of the housing unit in the mounted state of the housing unit on the machine tool. Preferably, the opening extends into the at least one receiving region transversely to the main direction of extension of the at least one receiving region. The "main direction of extension" of an object is to be understood in particular to mean a direction parallel to the longest side of the smallest geometric cube that exactly completely surrounds the object. Preferably, the housing unit can have at least one deflection element arranged on, in particular in, the opening, against which the further actuating element can rest. Alternatively or additionally, it is conceivable for the housing unit to have at least one damping element, which is arranged on, in particular in, the opening and which is made of rubber, for example, and which is provided for damping further actuating elements which pass through the housing unit, in particular for noise avoidance. Advantageously, the installation effort for adapting the power tool switching device to the power tool can be kept small for the user. Advantageously, a user-friendly machine tool switching device can be provided.

It is furthermore proposed that the housing unit at least in sections forms at least one, in particular funnel-shaped, guide region for guiding the further actuating element to the opening. Preferably, the guide region is formed by, in particular delimited by, the at least two housing parts forming the receiving section. In particular, the at least two housing parts have a shape in the region around the opening that defines a funnel-shaped guide region. Preferably, at least one of the housing parts is tapered in a direction towards the opening. In particular, the at least two housing parts form a guide region which tapers in a funnel-like manner in the direction of the opening. It can advantageously be facilitated for the user to introduce the further actuating element into the opening.

Furthermore, it is proposed that the power tool switching device comprises at least one output unit, which is provided for the purpose of outputting at least one switching state and/or charging state of the electronics unit, in particular optically, acoustically and/or tactually. Preferably, the output unit is connected, in particular electrically connected, to the electronics unit in terms of signal transmission technology. Preferably, the output unit has at least one output element, which can be arranged in particular on a circuit board of the electronics unit. In particular, the output unit can have a plurality of output elements, in particular at least two, preferably at least three and particularly preferably at least four output elements. Preferably, the output unit is provided as an optical output unit for optically outputting at least one switching state and/or charging state of the electronics unit, and in particular has at least one output element configured as a light-emitting element. Preferably, the output element is designed as a multi-color light-emitting diode (LED). Alternatively, it is conceivable for the optical output unit to have at least one output element or the like which is designed as a display. Alternatively or additionally, it is conceivable for the output unit to be provided as an acoustic and/or haptic output unit for acoustically and/or haptically outputting at least one switching state and/or charging state of the electronics unit, and in particular to have at least one acoustic output element, for example a loudspeaker, and/or at least one haptic output element, for example a vibration motor. The switching state of the electronics unit specifies, in particular, in which switching position the at least one switching element of the electronics unit is. The charge state of the electronics unit is in particular indicative of a residual charge of the electronics unit and/or of at least one energy supply source of the power tool, for example a battery. Advantageously, feedback about the switching process can be conveniently provided to the user according to the switching process.

Furthermore, it is proposed that the power tool switching device comprises at least one secondary operating unit, wherein the electronics unit is designed to output at least one signal as a function of the operation performed by the operating unit and the secondary operating unit. The secondary operating unit is preferably provided with at least one additional switching element for operating the electronics unit. Preferably, the secondary actuating unit is configured differently from the actuating unit. Alternatively, it is conceivable for the secondary actuating unit to be at least substantially similar to the actuating unit. Preferably, the secondary actuating unit has at least one secondary actuating element, which is in particular not coupled to an operating element of the power tool. In particular, the secondary actuating element can be actuated directly by a user of the power tool switching device. In particular, the secondary actuating element is provided for actuating the additional switching element directly, in particular without a transmission. The secondary actuating element can be designed in particular as a push button, a slide switch, a rotary switch or other secondary actuating elements which are considered appropriate by the person skilled in the art. In particular, the secondary actuating element is arranged at least in sections outside the housing unit, in particular for actuation by a user, and at least in sections inside the housing unit, in particular for actuating an additional switching element. Preferably, the secondary actuating unit has at least one secondary pressing and/or pulling element, in particular a compression spring, which is provided for elastically, in particular bistable mounting, of the secondary actuating element spring on the housing unit. In particular, the secondary actuating element can be latched in at least one switching position, in particular at least in an actuating position. Preferably, the electronics unit is designed to output at least one signal, in particular at least one control signal for activating the electric drive unit, to the electric drive unit as a function of the actuation by the actuation unit and as a function of the, in particular simultaneous, actuation by the secondary actuation control signal unit. Advantageously, a user-friendly and user-safe power tool switching device can be provided in this way.

The invention also proceeds from a power tool, in particular a pushable garden appliance, having at least one electric drive unit and at least one power tool switching device, in particular a power tool switching device according to the invention.

It is proposed that the machine tool switching device is designed for electronically controlling the electric drive unit. Preferably, the power tool is designed as a power tool which is at least partially retrofitted from an internal combustion engine as an electric motor. Advantageously, a power tool with an electric drive unit can be provided, which can be controlled in a user-friendly manner.

The power tool switching device according to the present invention and/or the power tool according to the present invention should not be limited to the above-described applications and embodiments. In particular, the power tool switching device according to the invention and/or the power tool according to the invention can have a different number of individual elements, components and units than the number mentioned in this document. Furthermore, in respect of the numerical ranges specified in the present disclosure, numerical values within the mentioned ranges should also be regarded as disclosed and can be used arbitrarily.

Drawings

Other advantages result from the following description of the figures. Embodiments of the invention are illustrated in the drawings. The figures, description and claims contain many combinations of features. Those skilled in the art can also appropriately consider these features individually and generalize them into meaningful other combinations.

The figures show:

fig. 1 shows a machine tool according to the invention with a machine tool switching device according to the invention in a perspective view,

fig. 2 shows a perspective view of a detail of the power tool switching device according to the invention from fig. 1 in the mounted state on the power tool according to the invention from fig. 1,

figure 3 shows an exploded perspective view of the switching device of the power tool according to the invention from figure 1,

fig. 4 shows the electronics unit of the switching device of the power tool of fig. 1 in a perspective view,

figure 5 shows the machine tool switching device according to the invention from figure 1 in a schematic sectional view,

figure 6 shows the machine tool switching device according to the invention from figure 1 in a further schematic sectional view,

figure 7 is a diagram schematically illustrating the switching displacement of the actuating unit of the machine tool switching device according to the invention from figure 1,

figure 8 shows schematically another graph of the switch displacement of figure 7,

figure 9 shows in a schematic representation the machine tool switching device according to the invention of figure 1,

fig. 10 shows a further schematic representation of the switching device of the power tool of fig. 1 according to the invention.

Detailed Description

Fig. 1 shows a perspective view of a power tool 14, in particular a pushable garden appliance, having at least one electric drive unit 12 and at least one power tool switching device 10, in particular for a pushable garden appliance. The power tool 14 is preferably designed as a retrofit power tool 14. The power tool 14 has in particular the at least one electric drive unit 12, which in particular comprises an electric motor, which replaces at least one drive unit originally present in the power tool 14 and having an internal combustion engine. The power tool 14 is preferably designed as a garden tool, in particular as a lawn mower. In the present exemplary embodiment, the power tool 14 is configured as a lawn mower. The power tool 14 can also be embodied, in particular, as a motorized hedge trimmer, a pole trimmer, a chain saw, a power tool other than a garden tool, in particular a hand-held power tool, illustratively as a jigsaw, a circular saw, a power drill or the like, or as another power tool which is considered appropriate by the person skilled in the art. The power tool switching device 10 is designed in particular for electronically controlling the at least one electric drive unit 12 of at least one power tool 14. The power tool switching device 10 is preferably designed for electronically controlling the at least one electric drive unit 12 of the power tool 14, which is provided for driving at least one processing unit of the power tool 14, such as a mowing mechanism, a saw chain, a cutting tool, etc. (not further shown here). Alternatively or additionally, it is conceivable for the power tool switching device 10 to be designed for electronically controlling at least one further electric drive unit of the power tool 14, which is provided for driving at least one forward unit 54 of the power tool 14, for example a drive wheel 56 of the power tool 14 in the form of a mower.

The power tool switching device 10, in particular the housing unit 38 of the power tool switching device 10, is preferably designed as a box, a magazine or the like. Preferably, the power tool switching device 10, in particular the housing unit 38, can be fastened to the power tool 14, in particular by the power tool 14 or a user of the power tool switching device 10. Preferably, the power tool switching device 10, in particular the housing unit 38, can be fastened to the power tool 14 without tools. In fig. 1, the power tool switching device 10, in particular the housing unit 38, is in particular fastened to a push bow (Schubb ü gel)58 of the power tool 14.

Fig. 2 shows a perspective view of a detail of the power tool switching device 10 from fig. 1 in the mounted state on the power tool 14 from fig. 1. The power tool switching device 10 comprises in particular at least one mechanical actuating unit 16, 16 'and at least one electronics unit 18, which is designed to output at least one signal, in particular at least one control signal, as a function of an actuation by the actuating unit 16, 16'. Preferably, the power tool switching device 10 comprises at least one transmission unit 20, 20 'operatively connected to the actuating unit 16, 16', which transmission unit is provided for, in particular, mechanically adjusting the ratio between the actuating displacement of the actuating unit 16, 16 'and the switching displacement of the actuating unit 16, 16'.

The power tool 14 preferably has at least one operating element 60, such as an operating lever, operating switch, etc., which was provided previously for operating a drive unit with an internal combustion engine originally present in the power tool 14. In the present exemplary embodiment, the operating element 60 is configured as an operating bow. Preferably, the operating element 60 has at least two different states, between which the operating element 60 can be moved by a certain displacement distance, for example moved, swung or the like. Preferably, the actuating unit 16, 16 ', in particular at least one actuating element 34, 34 ' of the actuating unit 16, 16 ', can be coupled to the actuating element 60. The actuating elements 34, 34' are preferably designed as actuating cables, actuating wires or the like. The actuating element 34, 34 ', in particular the pulling actuating element 34, 34', coupled to the actuating element 60 is preferably actuated as a function of the actuation of the actuating element 60 of the power tool 14. The actuating element 34, 34 ' is preferably operatively connected to at least one further element of the actuating unit 16, 16 ', in particular the sliding element 26, 26 ', which is provided in particular for actuating the electronics unit 18. Alternatively, it is conceivable for the actuating elements 34, 34' to be provided for actuating the electronics unit 18.

Fig. 3 shows an exploded view of the power tool switching device 10 from fig. 1 in a perspective view. The electronics unit 18 preferably has at least one switching element 28, 30, 62, for example a microswitch, a potentiometer, a relay or the like. Preferably, the actuating unit 16, 16 ', in particular the sliding element 26, 26', is provided for actuating the at least one switching element 28, 30 of the electronics unit 18 as a function of the actuation of the actuating element 60. It is exemplary conceivable to move the actuating element 34, 34 ', in particular the sliding element 26, 26', as a function of the actuation of the actuating element 60, which actuates at least one switching element 28, 30 of the electronics unit 18 as a function of said movement. Preferably, the at least one switching element 28, 30, 62, in particular the switching element 28, 30, 62 embodied as a microswitch, has at least two switching states, wherein in a first switching state a signal for deactivating the electric drive unit 12 is output and in a second switching state a signal for activating the electric drive unit 12 is output. Alternatively, it is conceivable for the at least one switching element 28, 30, 62, in particular a switching element designed as a potentiometer, to have a plurality of switching states, in particular continuously variable switching states, wherein different signals for setting different rotational speeds to the electric drive unit 12 are output, for example, depending on the different switching states. The electronics unit 18 can in particular have a plurality of switching elements 28, 30, 62, the number of which in particular corresponds to the number of actuating units 16, 16' of the power tool switching device 10. In the present exemplary embodiment, the electronics unit 18 has, for example, three switching elements 28, 30, 62, which are, for example, at least substantially similar to one another, in particular, are configured as microswitches (see fig. 4). In the present exemplary embodiment, the power tool switching device 10 has, for example, a control unit 16 and a further, in particular optional, control unit 16', which are, for example, at least substantially similar to one another. The actuating unit 16 is provided in particular for actuating the switching element 28 of the electronics unit 18. The further actuating unit 16' is provided for actuating a further switching element 30 of the electronics unit 18. For the sake of clarity, the following description is limited to the operating unit 16 and the switching element 28. The description can also be transferred at least substantially analogously to the further operating unit 16' and the further switching element 30. The electronics unit 18 has, in particular, an additional switching element 62. The additional switching element 62 can be actuated, in particular, by the secondary actuating unit 52 of the power tool switching device 10. Preferably, the electronics unit 18 has at least one circuit board 64 on which the switching elements 28, 30, 62 are arranged. Preferably, the electronics unit 18 comprises at least one signal line element 66, in particular a cable, which can be electrically connected, in particular, to the electric drive unit 12. The electronics unit 18 is preferably designed to output signals to the electric drive unit 12 via a signal line element 66.

Preferably, the power tool switching device 10 can have a plurality of gear units 20, 20 ', the number of gear units 20, 20 ' corresponding in particular to the number of actuating units 16, 16 '. In the present exemplary embodiment, the power tool switching device 10 has, for example, a transmission unit 20 assigned to the actuating unit 16 and a further, in particular optional, transmission unit 20 'assigned to the further actuating unit 16'. The transmission unit 20 and the further transmission unit 20' are in particular at least substantially of similar design to one another. For clarity, the following description is limited to the transmission unit 20. The description can also be transferred at least substantially similarly to the further transmission unit 20'. In particular, the actuating displacement of the actuating unit 16 is dependent on the displacement distance between the at least two switching states of the actuating element 60. In particular, the actuating displacements of the actuating unit 16 can be different on different power tools 14, which have different displacement distances, in particular between at least two switching states of the actuating element 60. Preferably, the transmission unit 20 is provided for predetermining an at least substantially constant switching displacement independently of the actuating displacement of the actuating unit 16, in particular independently of the different actuating elements 60 on the different power tools 14. The transmission unit 20 is preferably designed as a mechanical transmission unit 20, which has, in particular, mechanical elements for setting the ratio between the actuating displacement and the switching displacement. In particular, the transmission unit 20 has at least one pressing and/or pulling element 22, 24, preferably a plurality of pressing and/or pulling elements 22, 24, which are operatively connected to the actuating unit 16, in particular to the actuating element 34 and/or the sliding element 26. The at least one pressure and/or tension element 22, 24, in particular a spring, a pressure cylinder or the like, is provided in particular for loading the actuating element 34 and/or the sliding element 26 with pressure and/or tension. Alternatively or additionally, it is conceivable for the mechanical transmission unit 20 to have a gear, a cable traction system or the like for setting the ratio between the actuating displacement and the switching displacement. It is further alternatively conceivable that the transmission unit 20 is designed as an at least partially electrical, in particular electromechanical, transmission unit, in particular having at least one actuator for setting the ratio between the actuating displacement and the switching displacement; a hydraulic transmission unit, in particular having at least one hydraulic cylinder for setting the ratio between the actuating displacement and the switching displacement; or as a pneumatic transmission unit, in particular having at least one pneumatic cylinder for setting the ratio between the actuating displacement and the switching displacement.

Preferably, the transmission unit 20 is provided to provide a switching displacement of the actuating unit 16 which is shorter than the actuating displacement of the actuating unit 16, in particular up to the switching point of the electronics unit. Depending on the power tool 14 used with the power tool switching device 10, in particular depending on the operating element 60 of the power tool 14, the actuating displacement of the actuating unit 16 can be at least 5 cm, at least 10 cm, at least 20 cm or at least 30 cm long, for example. In particular, the transmission unit 20 is provided to provide a switching displacement of the actuating unit 16 of at most 2 cm, preferably at most 1.5 cm, particularly preferably at most 1 cm and very particularly preferably at most 0.5 cm.

Preferably, the transmission unit 20 comprises at least one pressing and/or pulling element 22, 24, which is provided to set a switching movement of the actuating unit 16 and/or to return the actuating unit 16 into an unactuated starting position. In the present exemplary embodiment, the gear unit 20 has, for example, two pressing and/or pulling elements 22, 24. The pressure and/or tension elements 22, 24 are preferably designed as springs, in particular compression springs or tension springs. The pressure and/or tension elements 22, 24 are preferably designed as helical springs. The pressure and/or tension elements 22, 24 are preferably designed as metal springs. Alternatively, it is conceivable for the pressure and/or tension elements 22, 24 to be designed as rubber springs, air springs, gas compression springs or other pressure and/or tension elements which are considered appropriate by the person skilled in the art. The pressure and/or tension elements 22, 24 are preferably operatively connected, in particular mechanically coupled, to the actuating unit 16, in particular to the actuating element 34 and/or to the sliding element 26. The transmission unit 20 preferably has the at least two pressure and/or tension elements 22, 24, wherein at least one second pressure and/or tension element 24 is mechanically coupled to the actuating element 34 and at least one first pressure and/or tension element 22 is mechanically coupled to the sliding element 26. In particular, the switch displacement depends on parameters of the pressure and/or tension elements 22, 24, in particular pressure and/or tension forces (e.g. spring forces), length, etc. In particular, the switching displacement can be set by adapting parameters of the pressure and/or tension elements 22, 24, in particular the pressure and/or tension forces, for example the spring force, the length, etc. The pressure and/or tension elements 22, 24 are preferably provided to apply the actuating unit 16, in particular the actuating element 34 and/or the sliding element 26, with a restoring force in the switching position, in particular actuated by the actuating element 60. The push and/or pull elements 22, 24 are provided in particular for returning the actuating unit 16, in particular the actuating element 34 and/or the sliding element 26, from the actuated switching position into an unactuated starting position, in particular pulling or pushing, as a function of the release of the actuation.

The power tool switching device 10 preferably comprises at least one housing unit, in particular the aforementioned housing unit 38, which has at least one receiving region 40, 42, in particular at least one receiving channel, in which the transmission unit 20, 20 'and/or the actuating unit 16, 16' can be arranged. Preferably, the housing unit 38 can have a plurality of receiving areas 40, 42, the number of receiving areas 40, 42 corresponding in particular to the number of actuating elements 34, 34', 44. In the present exemplary embodiment, the housing unit 38 has, by way of example, one receiving region 40 and one further receiving region 42. The receiving area 40 is provided in particular for receiving the actuating unit 16 and the transmission unit 20. The further receiving region 42 is provided in particular for receiving the further actuating unit 16 'and the further transmission unit 20'. The housing unit 38 is preferably of box-like design in the assembled state. The housing unit 38 is preferably made of plastic. It is alternatively contemplated that housing unit 38 is made of composite materials, metals, or other materials deemed significant by those skilled in the art. Preferably, the transmission unit 20, the actuating unit 16 and/or the electronics unit 18 are arranged at least partially within the housing unit 38, in particular within at least one receiving section 68 of the housing unit 38. Preferably, the housing unit 38 has at least one fastening section 70, which is arranged separately from the receiving section 68 and is provided for fastening to the power tool 14. Preferably, in the state in which the housing unit 38 is fastened to the power tool 14, at least one component of the power tool 14, in particular a rod, in the present exemplary embodiment the push bow 58, extends through the fastening section 70 (see fig. 2). The housing unit 38 has in particular at least two, preferably at least three and particularly preferably at least four housing parts 72, 74, 76, 78, which are fastened to one another in particular by means of fastening elements 80 of the power tool switching device 10, in particular by means of screws. In the present embodiment, the housing unit 38 illustratively has a first housing portion 72, a second housing portion 74, a third housing portion 76, and a fourth housing portion 78.

For clarity, the following description is limited to the receiving area 40. The description can also be transferred at least substantially similarly to the further receiving area 42. The receiving region 40 is preferably delimited by a rib element 82 of at least the first housing part 72 of the housing unit 38. The receiving region 40 is preferably provided for at least completely receiving the first press and/or pull element 22, the second press and/or pull element 24 and the sliding element 26. The receiving region 40 is designed in particular for receiving the first press-on and/or pull element 22, the second press-on and/or pull element 24 and the sliding element 26 in a precisely fitting manner. The receiving region 40 is preferably provided for receiving the actuating element 34 at least in sections. In particular, the actuating element 34 extends partially within the receiving region 40 and partially outside the receiving region 40, in particular outside the housing unit 38. In particular, the housing unit 38, in particular at least the first housing part 72 of the housing unit 38, has at least one through opening, through which the actuating element 34 can extend out of the housing unit 38, in particular the receiving region 40. Preferably, the first press and/or pull element 22, the second press and/or pull element 24 and the sliding element 26 are arranged at least substantially without play in the receiving region 40 in the assembled state of the housing unit 38 in a direction transverse to a first force direction 84 of the first press and/or pull element 22 and in a direction transverse to a further force direction 86 of the second press and/or pull element 24 (see fig. 5).

Preferably, the at least one receiving region, in particular the further receiving region 42, is provided for at least one further actuating element 44 of the actuating unit 16 to extend through the entire housing unit 38 in a manner that is free from functional connection with the electronics unit 18 and in particular is free from a transmission. The further actuating element 44 can preferably be configured at least substantially similarly to the actuating element 34 with regard to shape, material composition, etc. The further actuating element 44 is preferably longer than the actuating element 34. In the assembled state of the actuating element 60 of the power tool 14 used with the power tool switching device 10, the further actuating element 44 preferably extends to a drive unit, in particular a drive unit with an internal combustion engine, which can be actuated by the further actuating element 44 (not further shown here). In particular, the further actuating element 44 is provided for mechanically actuating a drive unit, in particular of a different design than the electric drive unit 12. The drive unit can be provided in particular for driving the advancing unit 54 of the power tool 14. For example, it is conceivable for the drive unit to have a pulley for driving the advancing unit 54, and for the further actuating element 44 to be provided for adjusting the diameter of the pulley. Preferably, the housing unit 38, in particular at least the first housing part 72 of the housing unit 38, has at least one further through-opening 88 and at least one additional through-opening 90, through which the further actuating element 44 can extend. Preferably, the further through-opening 88 and the additional through-opening 90 are arranged on two walls 92, 94 of the housing unit 38, in particular of the first housing part 72, which walls face away from one another. In the present exemplary embodiment, the further through openings 88 are arranged on the wall 92 and the additional through openings 90 are arranged on the further wall 94. Preferably, the further receiving region 42 is formed without the sliding element 26 ' of the further actuating unit 16 ', the first pressure and/or tension element 22 ' and the second pressure and/or tension element 24 ' of the further transmission unit 20 ' for the further actuating element 44 to extend through. Preferably, the further receiving region 42 is provided for the exchangeable reception of the further actuating element 44 or of the further transmission unit 20 'and the further actuating unit 16'.

Preferably, the power tool switching device 10 comprises at least one output unit 50, which is provided for the in particular optical, acoustic and/or tactile output of at least one switching state and/or charging state of the electronics unit 18. The output unit 50 is preferably connected, in particular electrically connected, to the electronics unit 18 in terms of signal transmission technology. Preferably, the output unit 50 has at least one output element 96, which can be arranged, in particular, on the circuit board 64 of the electronics unit 18. In particular, the output unit 50 can have a plurality of output elements 96, in particular at least two, preferably at least three and particularly preferably at least four output elements 96. In the present embodiment, the output unit 50 illustratively has four output elements 96. Preferably, the output unit 50 is provided as an optical output unit for optically outputting at least one switching state and/or charging state of the electronics unit 18, and in particular has at least one output element 96 which is designed as a light-emitting element. In the present exemplary embodiment, output unit 50 illustratively has four output elements 96 configured as light-emitting elements. Preferably, the output element 96 is designed as a multicolored light-emitting diode. Alternatively, it is conceivable for the optical output unit 50 to have at least one output element 96 or the like, which is designed as a display. Alternatively or additionally, it is conceivable for the output unit 50 to be provided as an acoustic and/or haptic output unit for acoustically and/or haptically outputting at least one switching state and/or charging state of the electronics unit 18, and in particular to have at least one acoustic output element, for example a loudspeaker, and/or at least one haptic output element, for example a vibration motor. The switching state of electronics unit 18 specifies, in particular, the switching position in which switching elements 28, 30, 62 of electronics unit 18 are located. The charge state of the electronics unit 18 is a representation of, inter alia, a residual charge of the electronics unit 18 and/or at least one energy supply source of the power tool 14, for example a battery (not further shown here). The third housing part 76 has in particular four notches 98 through which the light emitted by the output element 96 can pass out. The output unit 50 has in particular at least one identification element 100 for identifying the output unit 50 which can be arranged in particular on the third housing part 76.

Preferably, the power tool switching device 10 comprises at least one secondary operating unit, in particular the aforementioned secondary operating unit 52, wherein the electronics unit 18 is designed to output at least one signal as a function of the operation by the operating unit 16 and the secondary operating unit 52. The following description applies at least substantially analogously to the interaction of the secondary operating unit 52 with the further operating unit 16'. The secondary operating unit 52 is preferably provided with at least one additional switching element 62 for operating the electronics unit 18. Preferably, the secondary actuating unit 52 is configured differently from the actuating unit 16. Alternatively, it is conceivable for the secondary actuating unit 52 to be at least substantially similar to the actuating unit 16. Preferably, the secondary actuating unit 52 has at least one secondary actuating element 102, which is in particular not coupled to the actuating element 60 of the power tool 14. In particular, the secondary actuating element 102 can be actuated directly by a user of the power tool switching device 10. In particular, the secondary actuating element 102 is provided for actuating the additional switching element 62 directly, in particular without a transmission. The secondary actuating element 102 can be embodied in particular as a push button, a slide switch, a rotary switch or other secondary actuating elements which are considered appropriate by the person skilled in the art. In the present exemplary embodiment, the secondary actuating element 102 is configured as a push button. In particular, the secondary actuating element 102 is arranged at least in sections outside the housing unit 38, in particular for actuation by a user, and at least in sections within the housing unit 38, in particular for actuating the additional switching element 62. The secondary actuating unit 52 preferably has at least one secondary pressing and/or pulling element 104, in particular a compression spring, which is provided to spring-mount, in particular bistable, the secondary actuating element 102 on the housing unit 38. In particular, the secondary actuating element 102 can be latched in at least one switching position, in particular at least in an actuating position. The electronics unit 18 is preferably designed to output at least one signal, in particular at least one control signal for activating the electric drive unit 12, to the electric drive unit 12 as a function of the actuation by the actuation unit 16 and as a function of the, in particular simultaneous, actuation by the secondary actuation control signal unit 52.

Fig. 4 shows the electronics unit 18 of the power tool switching device 10 from fig. 1 in a perspective view. The switching elements 28, 30, 62 can be well identified. The switching element 28 and the further switching element 30 are arranged at the same height on the circuit board 64, in particular as viewed in the main direction of extension 106 of the circuit board 64. Viewed in the main direction of extension 106 of the circuit board 64, the additional switching element 62 is arranged offset from the switching element 28 and the further switching element 30. Viewed transversely to the main direction of extension 106 of the circuit board 64, the switching element 28 and the further switching element 30 are arranged on the circuit board 64 at a distance from one another. The additional switching element 62 is arranged centrally between the switching element 28 and the further switching element 30, viewed transversely to the main direction of extension 106 of the circuit board 64.

Fig. 5 shows the power tool switching device 10 from fig. 1 in a schematic sectional illustration. Fig. 5 shows the actuating unit 16 in the non-actuated switching state. For the sake of clarity, the following description is limited to the cooperation of the operating unit 16 with the transmission unit 20 and the switching element 28. The description can also be transferred at least substantially analogously to the interaction of the further actuating unit 16 with the further transmission unit 20 and with the further switching element 30. Preferably, the transmission unit 20 comprises at least two pressure and/or tension elements, in particular the aforementioned pressure and/or tension elements 22, 24, wherein at least one first pressure and/or tension element 22 is designed as a tension spring and at least one second pressure and/or tension element 24 is designed as a compression spring. Preferably, the first pressure and/or tension element 22 is directly operatively connected to the sliding element 26, in particular is mechanically coupled to the sliding element 26. Preferably, the second press and/or pull element 24 is directly operatively connected to the actuating element 34, in particular mechanically coupled to the actuating element 34. Preferably, the first pressure and/or tension element 22 and the second pressure and/or tension element 24 are arranged, in particular in the housing unit 38, in such a way that a force direction 84, in which the first pressure and/or tension element 22 acts upon the actuating unit 16, in particular the sliding element 26, with a force, in particular a tensile force, and a further force direction 86, in which the second pressure and/or tension element 24 acts upon the actuating unit 16, in particular the actuating element 34, with a force, in particular a compressive force, extend at least substantially parallel to one another. Preferably, the force direction 84 and the further force direction 86 are directed counter to an actuating direction 108, in which actuating direction 108 the actuating unit 16 is moved as a function of an actuation, in particular an actuation by the actuating element 60. In particular, the force direction 84 and the further force direction 86 extend at least substantially counter-parallel to the actuating direction 108. In particular, the second pressure and/or tension element 24 is provided to apply a pressure force acting counter to the actuating direction 108 to the actuating element 34. In particular, the first pressure and/or tension element 22 is provided for exerting a tensile force acting against the actuating direction 108 on the sliding element 26. The first press and/or pull element 22 is preferably fastened to the sliding element 26 and the further wall 94 of the housing unit 38. The first press and/or pull element 22 is provided in particular for pulling the sliding element 26 in the direction of the further wall 94. The second press and/or pull element 24 is preferably supported on the sliding element 26. The second pressing and/or pulling element 24 is provided in particular for pressing the actuating element 34 against the sliding element 26, in particular in the direction of the further wall 94. In particular, the actuating element 34 extends at least in sections within the second pressing and/or pulling element 24. In particular, the actuating element 34 has at least one end 110 against which the second pressing and/or pulling element 24 can be pressed. Preferably, by adapting the parameters of these pressure and/or tension elements 22, 24, in particular the pressure and/or tension force (e.g. spring force), the length, the arrangement relative to one another, etc., the ratio between the actuating displacement and the switching displacement can be set.

Preferably, the actuating unit 16 comprises at least one sliding element, in particular the aforementioned sliding element 26, which is operatively connected to the gear unit 20, for actuating at least one switching element 28, in particular a microswitch, of the electronics unit 18, wherein the geometry of the sliding element 26 influences a switching displacement of the actuating unit 16, in particular up to a switching point of the electronics unit 18, relative to a maximum actuating displacement 32 of the sliding element 26. In particular, the maximum adjustment displacement 32 of the sliding element 26 is independent of the actuating displacement of the actuating unit 16. In particular, regardless of the power tool 14 used with the power tool switching device 10, the sliding element 26 has the same maximum adjustment displacement 32. The sliding element 26 is preferably provided for actuating a switching element 28 of the electronics unit 18. The sliding element 26 is provided in particular for moving the switching tongue 112 of the switching element 28, in particular transversely to the force direction 84 and the further force direction 86. Preferably, at least one contact of the switching element 28, in particular in the form of a microswitch, is closed by a movement of the switching tongue 112 and/or the resistance value of the switching element 28, in particular in the form of a potentiometer, is changed. The sliding element 26 preferably has at least one actuating projection 114, which is provided for actuating the switching element 28, in particular for moving a switching tongue 112 of the switching element 28. The switching displacement length, in particular up to the switching point, in particular with respect to the length of the maximum actuating displacement 32 of the sliding element 26, depends in particular on the geometric configuration of the sliding element 26, in particular of the actuating projection 114. It is exemplary conceivable that a sliding element 26, in particular an actuating projection 114, having a large maximum extent transversely to the force direction 84 and the further force direction 86 actuates the switching element 28 after a shorter switching displacement, in particular relative to the maximum adjustment displacement 32 of the sliding element 26, than a further sliding element, in particular a further actuating projection, having a smaller maximum extent transversely to the force direction 84 and the further force direction 86. It is exemplary conceivable for the sliding element 26, which has the actuating projection 114 further forward than the further sliding element, to actuate the switching element 28 after a shorter switching displacement, in particular relative to the maximum actuating displacement 32 of the sliding element 26, as viewed in the force direction 84 and the further force direction 86.

Preferably, the actuating unit 16 comprises at least one actuating element, in particular the aforementioned actuating element 34, in particular at least one actuating cable, operatively connected to the gear unit 20 for actuating the sliding element 26, wherein the switching displacement of the actuating unit 16, in particular up to the switching point of the electronics unit 18, relative to the maximum actuating displacement 36 of the actuating element 34 is dependent on the configuration of the gear unit 20. In particular, the maximum actuating displacement 36 of the actuating element 34 depends on the geometry of the actuating element 60, in particular of the actuating element 60, of the power tool 14 used with the power tool switching device 10. In particular, the actuating element 34 can have different maximum adjustment displacements 36 depending on the different power tools 14, in particular on the different actuating elements 60. Preferably, the switching displacement, in particular up to the switching point of the electronics unit 18, in particular relative to the maximum actuating displacement 36 of the actuating element 34, is dependent on the configuration, in particular the parameters, of the first pressure and/or tension element 22 and of the second pressure and/or tension element 24. It is exemplary conceivable that the transmission unit 20, the spring force of the first pressure and/or tension element 22 of which transmission unit 20 is smaller than the spring force of the second pressure and/or tension element 24, provides a shorter switching displacement, in particular relative to the maximum adjustment displacement 36 of the actuating element 34, than the further transmission unit, the spring force of the first pressure and/or tension element of which is greater than the spring force of the second pressure and/or tension element of which transmission unit 20 is provided.

Fig. 6 shows the power tool switching device 10 of fig. 1 in a further schematic sectional view. Fig. 6 shows the actuating unit 16 in the actuated switching state. The sliding element 26 has in particular already traveled a maximum adjustment displacement 32 of the sliding element 26 and in particular actuates the switching element 28. The actuating element 34 has in particular already traveled a maximum adjustment displacement 36 of the actuating element 34.

Fig. 7 shows a diagram 116 of the switching travel of the actuating unit 16 of the power tool switching device 10 according to the invention from fig. 1 in a schematic representation. The graph 116 includes, among other things, an abscissa axis 118 and an ordinate axis 120. The displacement distance is particularly plotted on the abscissa axis 118. The spring force is plotted in particular on the ordinate axis 120. The displacement distance is particularly proportional to the spring force, as indicated by line 122. In the diagram 116, in particular the maximum adjustment displacement 32 of the sliding element 26 is marked. Preferably, the sliding element 26 and/or the transmission unit 20 are designed such that the switching displacement of the actuating unit 16, in particular up to the switching point of the electronics unit 18, corresponds to at most 30% of the maximum actuating displacement 32 of the sliding element 26. The 30% of the maximum adjustment displacement 32 of the sliding element 26 is marked in particular by the section 124 in the diagram 116. In particular, the sliding element 26 and/or the transmission unit 20 are designed such that a switching displacement of the actuating unit 16, in particular up to a switching point of the electronics unit 18, corresponds to at most 30%, preferably at most 20% and particularly preferably at most 10% of a maximum actuating displacement 32 of the sliding element 26. In particular, the sliding element 26 and/or the transmission unit 20 are designed such that the sliding element 26 actuates the switching element 28 of the electronics unit 18 at the latest after the sliding element 26 has moved 30% of the maximum adjustment displacement 32 of the sliding element 26.

Fig. 8 schematically illustrates a further graph 126 of the switch displacement of fig. 7. The further graph 126 comprises, inter alia, an abscissa axis 128 and an ordinate axis 130. The displacement distance is particularly plotted on the abscissa axis 128. The spring force is plotted in particular on the axis of ordinates 130. The displacement distance is in particular proportional to the spring force, as indicated by the further line 132. The further graph 126 corresponds at least substantially to an enlarged version of the graph 116 of fig. 7. In particular, the maximum actuating travel 36 of the actuating element 34 is marked in the further graph 126. Preferably, the transmission unit 20 is designed such that a switching displacement of the actuating unit 16, in particular up to a switching point of the electronics unit 18, corresponds to at most 15% of the maximum actuating displacement 36 of the actuating element 34. A maximum of 15% of the maximum actuating displacement 36 of the actuating element 34 is marked in particular by a further segment 134 in the further diagram 126. In particular, the transmission unit 20 is designed such that a switching displacement of the actuating unit 16, in particular up to a switching point of the electronics unit 18, corresponds to at most 15%, preferably at most 10%, and particularly preferably at most 5% of a maximum actuating displacement 36 of the actuating element 34. In particular, the transmission unit 20 is designed such that the actuating unit 16, in particular the sliding element 26, actuates the switching element 28 of the electronics unit 18 at the latest after the actuating element 34 has moved 15% of the maximum actuating displacement 36 of the actuating element 34. Given a switching displacement of at most 30% of the maximum actuating displacement 32 of the sliding element 26 and of at most 15% of the maximum actuating displacement 36 of the actuating element 34, possible switching displacements of the actuating unit 16 are marked in particular by the additional segment 136.

Fig. 9 shows the power tool switching device 10 from fig. 1 in a schematic representation. Preferably, the housing unit 38 delimits at least one opening 46 which opens into at least one receiving region, in particular into the further receiving region 42, and which makes it possible to introduce at least one further actuating element 44 of the actuating unit 16 into the at least one receiving region 42 in the closed state of the housing unit 38. Fig. 9 shows the housing unit 38, in particular in the closed state. In particular, the first housing part 72, the second housing part 74 and the third housing part 76, which form the receiving section 68, are fixed to one another. Preferably, the closed state of the housing unit 38 differs from the state of the housing unit 38 mounted on the power tool 14. In particular, in the state in which the housing unit 38 is mounted on the power tool 14, the opening 46 is closed by at least one stationary housing part, in particular a fourth housing part 78, of the housing unit 38 (see fig. 10). Preferably, the opening 46 extends into the further receiving region 42 transversely to the main direction of extension 138 of the further receiving region 42. Preferably, the housing unit 38 can have at least one deflection element arranged on, in particular in, the opening 46, against which the further actuating element 44 can rest (not shown here). Alternatively or additionally, it is conceivable for the housing unit 38 to have at least one damping element, which is arranged on, in particular in, the opening 46 and which is made of rubber, for example, and which is provided for damping further actuating elements 44 passing through the housing unit 38, in particular for noise-avoidance purposes (not shown here).

Preferably, the housing unit 38 is at least partially designed with at least one, in particular funnel-shaped, guide region 48 for guiding the further actuating element 44 to the opening 46. Preferably, the guide region 48 is formed, in particular delimited, by a first housing part 72 and a third housing part 76 which form the receiving section 68. In particular, the first housing part 72 and the third housing part 76 have a shape in the region around the opening 46 that specifies the funnel-shaped guide region 48. Preferably, at least one of the housing parts 72, 76, in particular the first housing part 72, tapers in the direction of the opening 46. In particular, the first housing part 72 and the third housing part 76 form the guide region 48, which tapers in a funnel-like manner in the direction of the opening 46.

Fig. 10 shows the power tool switching device 10 of fig. 1 in a further schematic representation. In fig. 10, the further actuating element 44 is inserted in particular into the further receiving region 42. In particular, the fourth housing part 78 is fixed to the first housing part 72 and in particular closes the opening 46.