阅读说明：本技术 气动的调整单元、排气系统、具有排气系统的壳体、气动的执行器 (Pneumatic actuating unit, exhaust system, housing with an exhaust system, pneumatic actuator ) 是由 M·克拉尔 D·盖斯-埃塞尔 于 2019-08-02 设计创作，主要内容包括：公开一种气动的调整单元(5)、一种排气系统、一种壳体(3)以及一种气动的执行器。它们构造成提供了这样的可能性,即收集在所述气动的调整单元(5)放气时排出的并且通常具有脏污的废气和/或在运行中不可见的区域处排出所述废气,以便一方面不会由于脏污的壳体而引起用户的不愉快,并且另一方面保护通常可能与所述废气接触的部件。(A pneumatic actuating unit (5), an exhaust system, a housing (3) and a pneumatic actuator are disclosed. They are designed to make it possible to collect exhaust gases which are discharged when the pneumatic actuating unit (5) is deflated and which are normally contaminated and/or to discharge them at areas which are not visible during operation, in order on the one hand not to be unpleasant for the user due to a dirty housing and on the other hand to protect components which may normally come into contact with the exhaust gases.)

1. A pneumatic control unit (5) is designed to influence a required operating pressure, starting from the pressure of a compressed air source that can be connected to the control unit (5), and is designed to be connected to an exhaust line (6) in order to discharge exhaust air, which is discharged from the control unit (5) in order to reduce the operating pressure, into the exhaust line (6).

2. The adjustment unit (5) according to claim 1, wherein

The adjusting unit (5) is configured to

-a solenoid valve for controlling the flow of air,

-a membrane valve,

-a piston valve for controlling the flow of air,

-a slide valve,

-a relay valve, and/or

An adjustment unit configured for a pneumatic transmission actuator.

3. An exhaust system has at least one exhaust line (6) which is designed for connection to a pneumatic control unit (5) in order to receive exhaust gases which are discharged from the control unit (5) in order to reduce the operating pressure.

4. The exhaust system of claim 3, wherein

At least two exhaust lines (6) merge into one line, and/or

The at least one exhaust line (6) has a flexible or rigid section, and/or

The exhaust system is configured for placement in a pneumatic transmission actuator.

5. Exhaust system according to claim 3 or 4, wherein

The exhaust system has an exhaust opening (7) which is designed to discharge the received exhaust gas into an exhaust system or to the Atmosphere (AT), or

The exhaust system is designed for connection to such an outlet opening (7).

6. The exhaust system of claim 5, wherein

The outlet opening (7) of the exhaust system is designed as an interface, which is designed to guide the received exhaust gases further via a line,

the line is designed to guide the received exhaust gas out of a housing (3) in which the exhaust gas is received by the exhaust system.

7. A housing (3) is designed to receive a pneumatic actuating element, wherein

The housing (3) is further configured for receiving at least one pneumatic adjusting unit (5) according to claim 1 or 2 and an exhaust system according to one of claims 3 to 6.

8. Housing (3) according to claim 7, wherein

The housing (3) has at least one pneumatic actuating unit (5) according to claim 1 or 2 and an exhaust system according to one of claims 3 to 6, wherein the actuating unit (5) and the exhaust system are in fluid connection with one another and/or

The housing (3) has an outlet opening (7) which is in fluid connection with the exhaust system and is designed for discharging exhaust gases into an exhaust system or to the Atmosphere (AT) and/or

The housing (3) has an interface for connection to a compressed air source, preferably a compressed air reservoir (1), wherein the at least one pneumatic actuating unit (5) is connected to the interface.

9. Housing (3) according to claim 8, wherein

The outlet opening (7) is arranged on the housing (3) such that it is not visible when the housing (3) is installed and/or when the housing is used and/or the outlet opening (7) is arranged and configured for discharging exhaust gas into an invisible region and/or

The housing (3) is designed as a housing of a pneumatic transmission actuator.

10. Housing (3) according to claim 8 or 9, wherein

The outlet opening (7) of the housing (3) is designed as an interface, which is designed to guide the received exhaust gas further via a line,

the line is configured for guiding the received exhaust gases out of the housing (3) in which the exhaust system receives the exhaust gases.

11. A pneumatic actuator, the pneumatic actuator having:

-at least one pneumatic adjusting unit (5) according to claim 1 or 2,

-at least one exhaust system according to any one of claims 3 to 6, wherein the exhaust system is connected with the regulating unit (5),

-a housing (3) according to any one of claims 7 to 10, and

-at least one pneumatic actuating element configured for being acted upon by a working pressure and re-deflated by means of the pneumatic adjustment unit (5), wherein preferably: at least the at least one pneumatic actuating unit (5), the at least one exhaust system or the at least one pneumatic actuating element is arranged within the housing (3).

12. The pneumatic actuator according to claim 11, wherein the at least one pneumatic actuating element is designed for actuating a shifting element of a transmission, in particular of a constant mesh transmission.

Technical Field

The invention relates to a pneumatic actuating unit, an exhaust system, a housing, a pneumatic actuator, preferably in the form of a pneumatic transmission actuator.

Background

Pneumatic actuators, in particular pneumatic transmission actuators, of today have a regulating unit which regulates a desired working pressure in order to apply the working pressure to a pressure chamber of the actuator. If the working pressure should be reduced again, the pressure chamber is deflated. In this case, the air is discharged inside a housing in which the respective actuating unit is located.

Since the exhaust gas usually contains dirt, such as particles, water or oil, damage may occur to components, such as circuit boards, which are also arranged in the housing, by deposition, contamination or corrosion, or the external appearance may be impaired by a dirty oil film around the outlet.

Disclosure of Invention

The object of the present invention is therefore to design a ventilation arrangement for a pneumatic actuator, in particular a pneumatic transmission actuator, such that the above-mentioned problems are solved.

The object is achieved by the measures of the independent claims.

Advantageous further developments are the subject matter of the dependent claims.

According to the invention, a pneumatic control unit is provided, which is designed to influence a required operating pressure, starting from the pressure of a compressed air source that can be connected to the control unit, and which is designed to be connected to an exhaust line in order to discharge exhaust gas discharged from the control unit in order to reduce the operating pressure to the exhaust line. The pneumatic control unit is therefore important for the functional implementation of the pneumatic actuator. Preferably, a connection is formed on the control unit, to which connection the exhaust line can be connected, which enables a simple mounting of the exhaust line on the control unit.

The compressed air source is preferably designed as a compressed air reservoir.

Alternatively or additionally, the pneumatic actuating unit is preferably configured as a pneumatic actuating unit in the transmission actuator. This requires that the control unit is preferably designed in a robust manner with respect to environmental influences, for example temperature fluctuations, since in the operation of a commercial vehicle it is entirely possible for the temperature fluctuations to be in the range from-40 ℃ to +120 ℃, wherein no insulating housing is mandatory in which the control unit is arranged.

The actuating unit is in particular designed as a solenoid valve, a diaphragm valve, a piston valve, a slide valve and/or a relay valve. Additional valve types are also contemplated.

This configuration of the regulating unit is advantageous in order to be connected to the exhaust line.

Further preferably, the adjustment unit is designed for arrangement in a housing, particularly preferably in a housing of a transmission actuator. For this purpose, the adjustment unit preferably has the following elements: the element is designed for connection to a fastening means of the housing or to a separate fastening means and the housing in order to fasten the adjustment unit in the housing.

According to the invention, an exhaust system is also provided, which has at least one exhaust line, which is designed for connection to a pneumatic control unit in order to receive exhaust gases which are discharged from the control unit in order to reduce the operating pressure. The exhaust system can preferably be designed to combine a plurality of exhaust lines into one line in order to supply the exhaust gases in a targeted manner.

Preferably, the at least one exhaust line is made at least in sections of a flexible or elastic material, such as rubber. The exhaust line is therefore less affected by vibrations that may occur during operation of the pneumatic actuator. Alternatively or additionally, the at least one exhaust line may also be rigid, for example made of steel, at least in sections.

The exhaust system is preferably designed for arrangement inside a housing, wherein the exhaust system is also preferably formed at least by a part of the housing.

The exhaust system preferably has the following elements: the element is designed for connection to a fastening means of the housing or to a separate fastening means and the housing in order to fasten the adjustment unit in the housing.

Preferably, the exhaust line does not have to be embodied as a line. The exhaust line can also be at least partially embodied as a separate volume, into which preferably a plurality of regulating units are deflated.

The exhaust system preferably has an exhaust opening which is designed to discharge the received exhaust gas into an exhaust system or to the atmosphere. Alternatively, the exhaust system is configured for connection with such an exhaust port. The exhaust gas can be collected together for discharge.

The outlet of the exhaust system is preferably designed as an interface, which is designed to guide the received exhaust gas further via a line. The tubing is preferably fluidly connected to the interface. Further preferably, the line is configured for conducting the received exhaust gas out of a housing in which the exhaust system receives the exhaust gas. Further preferably, the conduit is configured for eventual discharge of exhaust gases away from the housing.

The exhaust gases are preferably discharged via a silencer, whether or not the discharge opening is connected to a further line.

The exhaust device may be a separate chamber which is designed to collect the exhaust gases.

Alternatively or additionally, the exhaust system is preferably designed as an exhaust system in a transmission actuator. This requires that the exhaust system is preferably designed in a robust manner with respect to environmental influences, for example temperature fluctuations, since in operation it is possible for the temperature fluctuations to be in the range from-40 ℃ to +120 ℃ in the transmission controller of a commercial vehicle or in the transmission actuator, wherein no insulating housing is absolutely necessary in which the exhaust system is preferably arranged. It must therefore be possible, for example, to: the exhaust system does not lose its function due to environmental influences. In particular, it must be noted that the exhaust system can be subjected to temperature-induced length changes without the connection point, for example, with the pneumatic actuating unit, becoming loose.

According to the invention, a housing is also provided, which is designed to receive a pneumatic actuating element, wherein the housing is also designed to receive at least one pneumatic actuating unit as described above and an exhaust system as described above.

Particularly preferably, the housing has the following elements: the element is designed to be connected to a fastening means of the adjustment unit, of the exhaust system and/or of the actuating means or to a separate fastening means and the adjustment unit, the exhaust system and/or the actuating means in order to fasten the adjustment unit in the housing.

Preferably, the housing has at least one pneumatic actuating unit as described above and an exhaust system as described above, wherein the actuating unit and the exhaust system (in particular for collecting exhaust gases of the actuating unit) are in fluid connection with one another. The housing is thus designed for generating an operating pressure and for collecting exhaust gases of the at least one pneumatic actuating unit via the exhaust system.

Alternatively or additionally, the housing has an outlet opening which is in fluid connection with the exhaust system and which is designed for discharging the exhaust gas into an exhaust system or to the atmosphere. A central discharge opening is thus obtained for discharging the exhaust gases collected by the exhaust system from the housing in the case of use of the exhaust system.

An exhaust outlet configured for connection to the exhaust system advantageously avoids the following problems: dirt which may be contained in the exhaust gas, such as particles, water or oil, deposits on the components inside the housing and damages them.

Preferably, the exhaust port of the housing and the exhaust port of the exhaust system are identical to each other or at least in fluid connection with each other.

Alternatively or additionally, the housing has an interface for connection to a compressed air source, preferably a compressed air reservoir, wherein the at least one pneumatic adjusting unit is connected to the interface. This results in a possibility of supplying the pneumatic actuating unit inside the housing with the compressed air required for generating the operating pressure.

If the exhaust gas is also discharged from the housing to any desired area, dirt, in particular oil, can adhere to the housing on the outside. An oil film may form which may additionally receive dust and particles from the environment, forming visible dirt on the housing, which may be mistaken for an indication of no sealing on the housing. As a result, the user's trust in the function of the pneumatic actuator is at least reduced or completely destroyed by the contamination. And the user will then unnecessarily go to a service shop in order to exclude the perceived leaks.

The outlet opening is therefore preferably arranged on the housing such that it is not visible when the housing is installed and/or when the housing is in use and/or is arranged and configured for discharging exhaust gas into an invisible region. This advantageously achieves that: soiling, such as particles, water or oil, which may be contained in the exhaust gas, does not leave a visible film on the housing, thereby avoiding the problem of the user mistakenly thinking that the housing is not sealed.

The outlet opening of the housing is preferably designed as an interface, which is designed to guide the received exhaust gas further via a line. The tubing is preferably fluidly connected to the interface. Further preferably, the line is designed to convey the received exhaust gas away from the housing. Further preferably, the conduit is configured for eventual discharge of exhaust gases away from the housing.

The exhaust gases are preferably discharged via a silencer, whether or not the discharge opening is connected to a further line.

Alternatively or additionally, the housing is preferably designed as a housing of a transmission actuator. This requires that the housing is preferably constructed in a robust manner with respect to environmental influences, dust or moisture. The housing is therefore preferably designed in a manner sealed off from the environment, wherein particularly preferably already existing connections, such as inlet openings and outlet openings, are provided with filter devices to protect against the environment.

According to the invention, a pneumatic actuator is also provided, which has:

at least one pneumatic adjustment unit as described above,

-at least one exhaust system as described above, wherein the exhaust system is fluidly connected with the regulating unit,

-a housing as described above, and

at least one pneumatic actuating element, which is designed to be acted upon by the working pressure and to be deflated again by means of the pneumatic actuating unit.

Preferably, at least the at least one pneumatic actuating unit, the at least one exhaust system or the at least one pneumatic actuating element is arranged inside the housing.

The pneumatic actuating element can be configured in various ways. A preferred configuration for this is a configuration for actuating the transmission. The at least one pneumatic actuating element is therefore preferably designed for actuating a shifting element of the transmission, in particular of a constant mesh transmission.

The pneumatic transmission actuator thus configured is preferably configured for use in a commercial vehicle.

The at least one pneumatic actuating element is preferably designed as a shift lever, which is designed for gear selection and shift path selection in the transmission. The movement of the shift lever required for this purpose is finally caused pneumatically by the operating pressure generated by the at least one actuating unit, so that the shift lever can be brought into engagement with a corresponding shifting element of the transmission and can finally move the shifting element for engaging a gear or for disengaging a gear.

The transmission actuator according to the invention, in particular in a utility vehicle in which the transmission is often mounted in a visible manner behind the driver's cab, has the following advantages: the components in the interior of the housing are not damaged by the dirt of the exhaust gas.

If the outlet opening is provided in a corresponding, invisible manner, the following advantages are also provided: no soiling as described above is formed on the visible outer side. This reduces the number of unnecessary stops of the commercial vehicle in the service shop and improves the economy of the commercial vehicle.

Drawings

Preferred embodiments of the invention are described below with the aid of the figures. In the figure, respectively:

fig. 1 shows a schematic representation of a housing of a pneumatic actuator according to the prior art, in which the principle progression from an inlet line to a pneumatic actuating unit is shown.

Fig. 2 shows an extension according to the invention of the arrangement of fig. 1.

Detailed Description

Fig. 1 shows a schematic representation of a housing 3 of a pneumatic actuator according to the prior art, in which the principle progression from an inlet line 4 to a pneumatic actuating unit 5 is shown.

A compressed air source in the form of an optional compressed air accumulator 1 is shown, which is in fluid contact with the housing 3 by means of a pressure line 2, which branches off inside the housing 3 into an inlet line 4. The supply line 4 is in fluid connection with a pneumatic control unit 5, which is embodied, for example, as a solenoid valve.

The regulating unit 5 is designed to regulate, starting from the pressure supplied from the compressed air reservoir 1 via the pressure line 2 and the supply line 4, an operating pressure which can subsequently be supplied from the regulating unit 5 to a pneumatic pressure chamber (not shown) in order to move an actuator, in particular an actuating element (not shown) of a transmission actuator, for example.

In the present exemplary embodiment, the control unit 5 discharges the exhaust gas from the pneumatic pressure chamber via the individual outlet openings 7 into the interior of the housing 3 in order to reduce the pressure in the pressure chamber again. Components in the interior of the housing 3, such as circuit boards, are damaged by dirt with particles, water or oil which may be contained in the exhaust gas of the actuating unit 5.

Fig. 2 therefore shows a further development according to the invention of the embodiment of fig. 1.

In the shown configuration, the exhaust line 6 is connected to the right of the regulating unit 5. In this case, each exhaust line 6 is connected to a separate control unit 5. The exhaust line 6 is designed to receive the exhaust gas of the control unit 5. For this purpose, the exhaust line 6 is fluidly connected to the regulating unit 5.

The exhaust lines 6 finally merge within the housing 3 and open into a common exhaust opening 7, which is embodied here as an exhaust line and which discharges the exhaust gases of the control unit 5 to the atmosphere AT.

It is thus possible to achieve: the exhaust gas is not discharged into the housing 3, so that components, such as circuit boards, in the interior of the housing 3 are not damaged by the dirty exhaust gas.

The exhaust line 6 and the outlet opening 7 form an exhaust system, which is designed to remove exhaust gases from the housing 3.

The outlet opening 7 is arranged on the housing 3 in such a way that the exhaust air discharged or the region into which it is discharged and/or the outlet opening 7 itself is not visible to the user from the outside. It is thus ensured that no soiling can form on the housing 3 in the visible region. Thereby it is avoided that the housing 3 is erroneously considered to be unsealed.

The present invention is not limited to the embodiments described herein. Further embodiments according to the present invention may also be realized by removing some elements or by replacing some elements with functionally equivalent elements.

Thus, for example, instead of the individual exhaust lines 6, separate volumes can also be provided, which are separated from the housing 3, into which the regulating unit 5 is discharged and from which the discharge opening 7 is subsequently discharged.

As already mentioned, the outlet opening 7 can also be arranged directly on the housing or be designed as a connection, wherein the connection is designed for connection to a line in order to convey the exhaust gas in a targeted manner to a desired location and to discharge it there. The desired position can be provided, for example, in a position of the utility vehicle which is not visible during normal operation (i.e. when the housing is installed). This is advantageous mainly in the following cases: the mounting of the housing 3 cannot be realized in such a way that the outlet opening 7 on the housing 3 is not visible.

The discharge port 7 may further have a muffler (not shown) configured to attenuate a discharge sound of the exhaust gas.

List of reference numerals

1 compressed air storage

2 pressure pipeline

3 case

4 input pipeline

5 adjusting unit

6 exhaust pipeline

7 discharge port

AT atmosphere