阅读说明：本技术 一种旋钮型档位开关 (Knob type gear switch ) 是由 潘海峰 陈小萍 于 2019-12-23 设计创作，主要内容包括：本发明属于转换开关领域,提供了一种旋钮型档位开关,包括旋转轴、至少一个公共极导电片、多个档位导电片及至少一个切换组件,切换组件具有公共极咬合部和档位咬合部,随着旋转轴的转动,带动切换组件同步转动,在转动的过程中,公共极导电片始终与对应的公共极咬合部相咬合,而档位咬合部与不同的档位导电片相咬合,从而使公共极导电片与不同的档位导电片通过切换组件形成电流通路。而公共极导电片与电路板上的总输入电路电连接,档位导电片与电路板上的切换电路电连接,因此,一个电路输入总线能够与多个切换电路电连接,从而实现多档位切换。本发明提供的旋钮型转换开关的结构简单,利于大规模生产与推广。(The invention belongs to the field of change-over switches, and provides a knob type gear switch which comprises a rotating shaft, at least one common pole conducting strip, a plurality of gear conducting strips and at least one switching assembly, wherein the switching assembly is provided with a common pole meshing part and a gear meshing part, the switching assembly is driven to synchronously rotate along with the rotation of the rotating shaft, the common pole conducting strip is always meshed with the corresponding common pole meshing part in the rotating process, and the gear meshing part is meshed with different gear conducting strips, so that the common pole conducting strip and the different gear conducting strips form a current path through the switching assembly. The common pole conducting strip is electrically connected with a main input circuit on the circuit board, and the gear conducting strip is electrically connected with a switching circuit on the circuit board, so that one circuit input bus can be electrically connected with a plurality of switching circuits, and multi-gear switching is realized. The knob type change-over switch provided by the invention is simple in structure and beneficial to large-scale production and popularization.)

1. A rotary-knob-type diverter switch, comprising:

a contact base unit and a rotation shaft,

wherein the contact base unit comprises a contact base and at least one switching component,

the contact base is provided with at least one common pole conducting strip distributed near the rotating shaft and a plurality of gear position conducting strips distributed along the circumferential direction of the rotating shaft,

the switching component is provided with a common pole meshing part which is used for meshing with the common pole conducting strip and extends along the circumferential direction of the rotating shaft, and a gear meshing part which is used for meshing with the gear conducting strip and is electrically connected with the common pole conducting strip,

the rotating shaft is fixedly connected with the switching component, so that a user drives the switching component to rotate when rotating the rotating shaft, the gear meshing part is meshed with different gear conducting pieces, and meanwhile, the common pole meshing part is always meshed with the common pole conducting pieces, so that the common pole conducting pieces and the different gear conducting pieces are electrically connected through the switching component to realize gear switching.

2. The rotary-knob-type position switch according to claim 1, wherein:

wherein the switching assembly comprises two conducting strips which are arranged oppositely and separated,

each conducting strip is composed of an arc-shaped section and an extension section,

the arc-shaped sections extend along the circumferential direction of the rotating shaft, the arc-shaped sections of the two conducting strips are overlapped in the axial direction of the rotating shaft, so that the common pole meshing part is formed,

the extending section extends from one end of the arc-shaped section along the radial direction of the arc-shaped section, and the extending sections of the two conducting strips are overlapped in the axial direction of the rotating shaft, so that the gear meshing part is formed.

3. The rotary-knob-type position switch according to claim 2, wherein:

the conductive sheet is made of beryllium bronze.

4. The rotary knob-type position switch according to claim 2, further comprising:

the switching wheel is provided with a plurality of switching wheels,

wherein the switching wheel is cylindrical, the bottom end of the switching wheel is provided with a flange extending along the radial direction of the switching wheel,

the top end of the switching wheel is connected with one end of the rotating shaft, and the flange is fixedly connected with the arc-shaped section.

5. The rotary-knob-type position switch according to claim 2, wherein:

wherein the switching assembly further comprises a spacer having a shape matching the arc segments, the spacer separating the two conductive strips between the arc segments of the two conductive strips.

6. The rotary-knob-type position switch according to claim 5, wherein:

wherein, the material of gasket is brass.

7. The rotary-knob-type position switch according to claim 1, wherein:

the number of the switching assemblies is more than or equal to 2, and the number of the common pole conducting strips is equal to that of the switching assemblies and is respectively meshed with the corresponding switching assemblies.

8. The rotary-knob-type position switch according to claim 1, wherein:

wherein the knob-type gear switch is arranged on a circuit board for use, the circuit board is provided with a plurality of welding points,

the common pole conducting strip and each gear conducting strip are electrically connected with a welding pin respectively, and the welding pins penetrate through the bottom of the contact base and extend towards the direction of the circuit board so as to be electrically connected with the corresponding welding points.

9. The rotary-knob-type position switch according to claim 8, wherein:

one of the welding pins is a reference welding pin, and the other welding pins are arranged along the circumference, and the reference welding pin is positioned in the circumference and matched with a reference welding point on the circuit board.

Technical Field

The invention belongs to the field of change-over switches, and particularly relates to a knob type gear switch.

Background

The change-over switch is a switch which can be used for switching over and connecting two or more than two power supplies or loads and controlling the operation of various devices, and is widely used in daily life and industrial production, such as: power stations, track transfer stations, high-speed rail locomotives, subway locomotives, ships and warships and the like. The change-over switch generally comprises a limiting base, a positioning base, a contact base, a rotating shaft and a handle, wherein the rotating shaft sequentially penetrates through the limiting base, the positioning base and then is connected with the contact base, and the rotating shaft drives a selection shaft to rotate through rotation of the handle arranged at the top end of the rotating shaft so as to realize opening and closing of corresponding equipment.

With the control circuit becoming more and more concentrated, the integration level of the internal circuit board also becomes more and more, for example high-low voltage switch cabinet, correspondingly, the knob switch welded on the circuit board needs to be able to change more gears. The existing knob type change-over switch is generally switched one to one, and the requirement of multi-gear switching is difficult to meet.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a knob type range switch capable of realizing multi-range switching.

The present invention provides a knob-type range switch having such features as including: the contact base unit comprises a contact base and a rotating shaft, wherein the contact base unit comprises a contact base and at least one switching assembly, the contact base is provided with at least one common pole conducting strip distributed near the rotating shaft and a plurality of gear conducting strips distributed along the circumferential direction of the rotating shaft, the switching assembly is provided with a common pole meshing part which is used for meshing with the common pole conducting strip and extends along the circumferential direction of the rotating shaft and a gear meshing part which is used for meshing with the gear conducting strips and is electrically connected with the common pole conducting strips, the rotating shaft is fixedly connected with the switching assembly, thereby driving the switching component to rotate when a user rotates the rotating shaft, enabling the gear meshing part to be meshed with different gear conductive sheets, and simultaneously enabling the common pole meshing part to be meshed with the common pole conductive sheet all the time, therefore, the common pole conducting strip is electrically connected with different gear conducting strips through the switching assembly, and gear switching is further realized.

In the knob type position switch provided by the present invention, there may be further provided a feature that: wherein, switching module includes two conducting strips that set up and separate dorsad, and every conducting strip comprises segmental arc and extending segment, and the segmental arc extends along the circumferential direction of rotation axis, and the segmental arc of two conducting strips overlaps at the axial direction of rotation axis to form public utmost point interlock portion, the radial extension of segmental arc is followed to the one end of segmental arc to extending segment, and the extending segment of two conducting strips overlaps at the axial direction of rotation axis, thereby forms gear interlock portion.

In the knob type position switch provided by the present invention, there may be further provided a feature that: the conductive sheet is made of beryllium bronze.

The knob type position switch according to the present invention may further include: the switching wheel is cylindrical, a flange extending along the radial direction of the wheel column is arranged at the bottom end of the switching wheel, the top end of the switching wheel is connected with one end of the rotating shaft, and the flange is fixedly connected with the arc-shaped section.

In the knob type position switch provided by the present invention, there may be further provided a feature that: wherein the switching assembly further comprises a spacer having a shape matching the arc segments, the spacer separating the two conductive strips between the arc segments of the two conductive strips.

In the knob type position switch provided by the present invention, there may be further provided a feature that: wherein, the material of gasket is brass.

In the knob type position switch provided by the present invention, there may be further provided a feature that: the number of the switching assemblies is more than or equal to 2, and the number of the common pole conducting strips is equal to that of the switching assemblies and is respectively meshed with the corresponding switching assemblies.

In the knob type position switch provided by the present invention, there may be further provided a feature that: the knob type gear switch is installed on a circuit board for use, a plurality of welding points are arranged on the circuit board, the common pole conducting strip and each gear conducting strip are respectively electrically connected with one welding pin, and the welding pins penetrate through the bottom of the contact base and extend towards the direction of the circuit board so as to be electrically connected with the corresponding welding points.

In the knob type position switch provided by the present invention, there may be further provided a feature that: one of the solder feet is a reference solder foot, and the other solder feet are arranged along the circumference, and the reference solder foot is positioned in the circumference and matched with the reference solder joint on the circuit board.

Action and Effect of the invention

The knob type change-over switch provided by the invention is provided with at least one common pole conducting strip, a plurality of gear position conducting strips, at least one switching component and a rotating shaft, wherein the switching component is provided with a common pole meshing part and a gear position meshing part, the switching component is driven to synchronously rotate along with the rotation of the rotating shaft, the common pole conducting strip is always meshed with the corresponding common pole meshing part in the rotating process, and the gear position meshing part is meshed with different gear position conducting strips, so that the common pole conducting strip and the different gear position conducting strips form a current path through the switching component. The common pole conducting strip is electrically connected with a main input circuit on the circuit board, and the gear conducting strip is electrically connected with a switching circuit on the circuit board, so that one circuit input bus can be electrically connected with a plurality of switching circuits, and multi-gear switching is realized. The knob type change-over switch provided by the invention is simple in structure and beneficial to large-scale production and popularization.

Drawings

Fig. 1 is a schematic perspective view of a knob type switch in an embodiment of the present invention;

FIG. 2 is an exploded view of a rotary switch in an embodiment of the invention;

FIG. 3 is an exploded view of a restraining base in an embodiment of the invention;

FIG. 4 is a schematic structural view of a contact base in an embodiment of the invention;

FIG. 5 is a schematic view of the contact base, switching wheel, switching assembly and switching wheel cover in an embodiment of the invention;

FIG. 6 is a schematic diagram of the exploded structure of FIG. 5; and

fig. 7 is a schematic view of a combination of a contact base, a switching wheel and a switching assembly in an embodiment of the invention.

Detailed Description

In order to make the technical means, the creation features, the achievement objects and the effects of the invention easy to understand, the knob type switch of the invention is specifically described below with reference to the embodiments and the accompanying drawings.

In the following embodiments, the directions are all referred to the directions of the three-dimensional structure diagram of the present invention, that is, the up-down directions refer to the up-down directions of the three-dimensional structure diagram.

< example >

The knob type switch 100 of the present embodiment is mounted on a circuit board of an integrated circuit, and switches a plurality of sets of output signals.

Fig. 1 is a schematic structural view of a knob type switch in an embodiment of the present invention, and fig. 2 is a schematic exploded structural view of the knob type switch in an embodiment of the present invention.

As shown in fig. 1 to 2, the knob type switch 100 includes a handle 10, a rotating shaft 20, a mounting ring assembly 30, a limit base 40, a positioning base 50, and a contact base unit 60.

The handle 10 has a square mounting hole, and is fitted to the tip of the rotary shaft 20, and the handle 10 is mounted to the tip of the rotary shaft 20 by engagement of the both.

The rotary shaft 20 includes a handle connection section 21 and a base connection section 22. The bottom end of the handle connecting section 21 has a mounting hole matching with the top end of the base connecting section 22, and the two are clamped together to form the rotating shaft 20, which penetrates through the mounting ring assembly 30, the limiting base 40, the positioning base 50 and the contact base unit 60. The portion of the rotating shaft 20 penetrating through the position limiting base 40, the positioning base 50 and the contact base unit 60 has a plurality of ribs radially distributed.

The mounting ring assembly 30 is used for mounting the knob type switch 100 on a control panel (not shown in fig. 1 and 2), and includes a first threaded ring 31 located outside the control panel and a second threaded ring 32 located inside the control panel. The first turn 31 has an external thread and cooperates with an internal thread of the second turn 32. When the knob type switch 100 is mounted, the rotary shaft 20 passes through the control panel, and the first and second screw rings 31 and 32 are screwed to sandwich the control panel therebetween, thereby fixing the knob type switch 100 to the control panel.

The handle 10, the rotatable shaft 20, and the collar assembly 30 are all made of a flame retardant material, such as PA 66.

The limiting base 40, the positioning base 50 and the contact base unit 60 each have a housing with a square cross section, and are sequentially engaged together from top to bottom. The position limiting pins 401 at the bottom end of the position limiting base 40 are engaged with the position limiting pin holes 501 on the side walls of the positioning base 50, and similarly, the positioning pins 502 at the bottom end of the positioning base 50 are engaged with the positioning pin holes 601 on the side walls of the contact base unit 60. The housing of the limiting base 40, the positioning base 50 and the contact base unit 60 are made of a flame retardant material, such as PA66, and have certain elasticity.

Fig. 3 is an exploded view of a restraining base in an embodiment of the invention.

As shown in fig. 2 to 3, the limiting base 40 includes a limiting housing 41, two limiting blocks 42 disposed on the housing 41, a limiting cover plate 43, and a limiting protrusion 44 disposed on the lower surface of the limiting cover 43. The two limit blocks 42 are uniformly distributed on the limit shell 41, the limit cover plate 43 covers the limit shell 41, the limit protrusions 44 can be matched with the limit blocks 42, and the rotating shaft 20 penetrates through the limit shell 41 and the limit cover plate 43. The rotation shaft 20 rotates to drive the limit cover plate 43 to rotate synchronously, and when the limit protrusion 44 rotates to the position of the limit block 42, the rotation is stopped. In the present embodiment, the rotary shaft 20 can be rotated clockwise by 180 degrees or counterclockwise by 180 degrees.

As shown in fig. 1 to 2, the positioning base 50 includes a positioning housing 51, four positioning blocks 52 disposed on the positioning housing 51, a spring 53, and a ratchet 54. The positioning housing 51 is a square shaped housing. Four corners of the positioning shell 51 are provided with positioning installation grooves, four positioning blocks 52 and springs 53 are respectively placed in the corresponding positioning installation grooves, one end of each spring 53 is in contact with the positioning shell 51, the other end of each spring 53 is in contact with the positioning block 52, and the positioning blocks 52 point to the center of the positioning shell 51. The rotating shaft 20 passes through the ratchet gear 54 to rotate synchronously with the ratchet gear 54, when the top ends of the ratchet teeth of the ratchet gear 54 sequentially slide through the positioning block 52, when the bottom ends of the ratchet teeth contact the positioning block 52, the elastic force of the spring 53 makes the positioning block 52 abut against the bottom ends of the ratchet teeth to fix the rotating shaft 20 thereto, so that the angle of each rotation of the rotating shaft 20 depends on the number of ratchet teeth on the ratchet gear 54, i.e., the angle of the ratchet gear. In the present embodiment, the ratchet gear 54 is a 45-degree ratchet gear having 8 ratchet teeth, i.e., the rotating shaft 20 rotates 45 degrees at a time. In other embodiments, the ratchet may be a 90 degree ratchet or other ratchet.

Fig. 4 is a schematic structural view of a contact base in an embodiment of the invention.

As shown in fig. 4, the contact base unit 60 includes a contact base 61, a switching wheel 62, a switching wheel cover 64, and two switching assemblies 63.

The housing of the contact base 61 is composed of a bottom surface and four side surfaces, the bottom surface is square, a sunken circular stepped groove 611 is formed in the center of the bottom surface, and the bottom of the switching wheel 62 is matched with the stepped groove 611.

Around the stepped slot 611, two common pole conductive sheets 612 and six gear conductive sheets 613 are further disposed on the bottom surface of the contact base 61 in a circumferential arrangement. The common electrode conductive sheet 612 and the notch conductive sheet 613 both extend toward the center of the stepped slot 611 in the radial direction of the stepped slot 611, and the extension length of the common electrode conductive sheet 612 is greater than that of the notch conductive sheet 613. The common pole conductive sheet 612 and the notch conductive sheet 613 are equidistant from the bottom surface of the contact base 61.

The two common pole conductive strips 612 are symmetrically distributed around the stepped slot 611, and equally divide the space on the bottom surface of the contact base 61 into two parts, and the two parts of the six notch conductive strips 613 are uniformly distributed in the space. The common electrode conductive plate 612 is used as an input terminal and electrically connected to the main input circuit on the circuit board, and the stage conductive plate 613 is used as an output terminal and electrically connected to the switching circuit on the circuit board. The switching circuit can be connected with different lines of the same device, different devices and signal lines.

The bottom surface of the contact base 61 is provided with 8 welding pins extending downward along the bottom surface, each common pole conductive tab 612 and each gear position conductive tab 613 are electrically connected to one welding pin 614, and the welding pins 614 are electrically connected to corresponding welding points on the circuit board. The welding points are respectively connected with corresponding circuits.

One of the solder tails 614 is a reference solder tail, and the remaining 7 solder tails 614 are arranged along a circumference, and the reference solder tail is located within the circumference (i.e., offset toward the center of the circle) and mates with a reference solder tail on the circuit board.

Fig. 5 is a schematic view showing a combined state of a contact base, a switching wheel, a switching assembly and a switching wheel cover in an embodiment of the present invention, fig. 6 is a schematic view showing an exploded structure of fig. 5, and fig. 7 is a schematic view showing a combined state of a contact base, a switching wheel and a switching assembly in an embodiment of the present invention.

As shown in fig. 5 to 7, the switching wheel 62 is cylindrical, a flange 621 extending radially is provided at the bottom end, a switching wheel hole 622 is provided at the top end, the switching wheel hole 622 is matched with the bottom end of the base connecting section 22 of the rotating shaft 20, and the bottom end of the base connecting section 22 is inserted into the switching wheel hole 622 to connect the switching wheel 62 and the rotating shaft 20. The switching wheel 62 is made of a reinforced flame retardant material, such as PA 66.

The flange 621 is symmetrically provided with two protrusions 623 for equally dividing the flange 621 into two parts, a first flange 621a and a second flange 621 b. Four fixing holes 624 are formed at each portion to correspond to the rivets of the switching member 63. The inside diameter of the switching wheel cover 64 can be closely fitted to the outside diameter of the tip end of the switching wheel 62. Rivets on the switching assembly 63 are inserted into the corresponding fixing holes 624, and then the switching wheel cover 64 is covered on the switching wheel 62, thereby fixing the switching assembly 63 on the flange 621. The two switching assemblies 63 are fixed to the first and second flange portions 621a and 621b, respectively, and are wound around the switching wheel 62 in head-to-tail opposition, and are separated by a projection 623.

The switching member 63 has a common pole engaging portion for engaging with the common pole conductive plate 612 and extending in the circumferential direction of the rotating shaft 20, and a shift position engaging portion for engaging with the different shift position conductive plates 613 and electrically connected to the common pole conductive plate 612.

The switching assembly 63 is composed of two conducting strips 631 separated from each other and arranged oppositely, and a spacer 632 functioning as a separation part, which are fixed together by rivets. The conductive sheet 631 is made of beryllium copper, and the spacer 632 is made of brass.

The conductive sheet 631 is constituted by an arc-shaped section 6311 and an extension section 6312. The arcuate segment 6311 is adapted to the shape of the first or second flange portion 621a or 621b, and a rivet is passed through the bottom of the lower arcuate segment 6311 and then inserted into the fixing hole 624.

The arc segments 6311 are arc-shaped bent plates having a certain curvature, and extend in the circumferential direction of the rotating shaft 20, and the arc segments 6311 of the two conductive sheets 631 are overlapped in the axial direction of the rotating shaft 20, thereby forming a common pole engaging portion. The common electrode occlusion part is provided with an occlusion space, and the two ends of the longitudinal section of the occlusion space are large, and the middle of the longitudinal section of the occlusion space is small. The common electrode conducting strip 612 is engaged with the two arc-shaped segments 6311 in the middle small part, and the special-shaped contact ensures the contact pressure and reduces the abrasion during mutual friction.

The extension 6312 extends from one end of the arc segment 6311 in the radial direction of the arc segment 6311, and the extensions 6312 of the two conductive sheets 631 overlap in the axial direction of the rotating shaft 20, thereby forming a notch. The gear engaging part also has an engaging space, and the longitudinal section of the engaging space is similar to that of the common pole engaging part, and the engaging space is large at two ends and small in the middle. The indexing conducting strip 613 engages with the two extensions 6312 in a small central part, which also ensures contact pressure and reduces wear during mutual rubbing.

The arc and length of the spacer 632 match the arc segments 6311, and the width is smaller than the width of the arc segments 6311, and the spacer separates the two conductive sheets 631 between the two arc segments 6311 and forms an engagement space of the common electrode engagement portion together with the two arc segments 6311 for the common electrode conductive sheet 612 to slide therein.

When the user rotates the rotating shaft 20, the switching wheel 62 is driven to rotate, the two switching assemblies 63 rotate synchronously, the common electrode conductive sheet 612 is always meshed with the corresponding common electrode meshing part, and the gear meshing part is meshed with one of the 3 gear conductive sheets 613, so that the common electrode conductive sheet 612 and the different gear conductive sheets 613 form a current path through the switching assemblies 63, and switching of 3 gears is realized simultaneously. Such a knob type switch 100 can simultaneously control two main input circuits each of which can realize switching of 3 different kinds of switching circuits.

In this embodiment, the height (i.e., the distance from the top end of the handle to the bottom end of the welding foot) of the knob type switch 100 is 25cm, the length and the width are both 28cm, and the engagement area is large, so that the switch has a large current passing area and can pass 48V and 10A of current.