A shift device

Abstract

The utility model discloses a gear shifting device, gear shifting device includes casing assembly, executive component and control assembly, gear shifting device includes first space, and the executive component includes piston assembly, and the part of piston assembly is located first space, and control assembly includes control valve, and gear shifting device includes second space, and control valve is located second space. The gear shifting device of the application, gear shifting device includes second space, sets up control valve in second space, compares with background art, avoids control valve to expose casing assembly, and effectively promotes the protection level of control valve.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts, and in particular to a gear shifting device. Background Technology

[0002] A car gear shifting device includes a housing, an actuator, and a control assembly. The housing includes a piston chamber, the actuator includes a piston assembly, a portion of which is located within the piston chamber, and the control assembly includes a solenoid valve. The solenoid valve controls the flow of a fluid medium (such as compressed gas), thereby controlling the movement of the piston assembly and enabling the car to switch between different gears. In some technologies, the solenoid valve is located outside the housing, resulting in a lower protection level for the solenoid valve. Utility Model Content

[0003] This invention provides a solution to the problem of low protection in the aforementioned gear shifting device.

[0004] A gear shifting device includes a housing assembly, an actuation assembly, and a control assembly. The gear shifting device includes a first space, the actuation assembly includes a piston assembly, a portion of which is located in the first space, the control assembly includes a control valve, and the gear shifting device includes a second space, the control valve being located in the second space. The direction of movement of the piston assembly is defined as a first direction, and the control valve is capable of controlling the piston assembly to move along the first direction.

[0005] The shifting device of this application includes a second space in which a control valve is disposed. Compared with the prior art, this avoids the control valve being exposed to the housing assembly, effectively improving the protection level of the control valve. Attached Figure Description

[0006] Figure 1 This is a three-dimensional schematic diagram of a gear shifting device provided by this utility model from a first perspective.

[0007] Figure 2 This is a three-dimensional schematic diagram of a gear shifting device provided by this utility model from a second perspective (the cover plate is not shown).

[0008] Figure 3 This is a cross-sectional view of a gear shifting device provided by this utility model. Figure 1 .

[0009] Figure 4 This is a cross-sectional view of a gear shifting device provided by this utility model. Figure 2 .

[0010] Figure 5 This is a three-dimensional schematic diagram of a gear shifting device provided by this utility model from a first perspective (the cover plate is not shown).

[0011] Figure label: 10. Housing assembly; 11. Housing; 111. First end; 112. Groove; 113. First end face; 114. Sealing groove; 115. Second end; 116. Second end face; 117. Cable outlet channel; 12. Cover plate; 13. First space; 131. First air chamber; 132. Second air chamber; 14. Second Space; 15. Sealing components; 16. Work passage; 161. First passage; 162. Second passage; 17. First air intake; 18. First exhaust port; 181. One-way valve; 20. Piston assembly; 21. Piston head assembly; 22. Piston rod; 23. Magnetic components; 31. Control valve; 311. First valve; 312. Second valve; 313. Manifold; 32. Sensors; 33. First wire harness assembly; 34. Second wiring harness assembly; 35. Circuit board; 40. Exhaust pipe. Detailed Implementation

[0012] The technical solution of the specific implementation method is described below with reference to the accompanying drawings.

[0013] See Figures 1-5 This utility model provides a gear shifting device, which includes a housing assembly 10, an execution assembly, and a control assembly. The gear shifting device includes a first space 13 and a second space 14. The execution assembly includes a piston assembly 20, a portion of which is located in the first space 13. The control assembly includes a control valve 31 and a sensor 32. In this embodiment, the control valve 31 is a solenoid valve, and the sensor 32 is a displacement sensor. The control valve 31 and the sensor 32 are respectively located in the second space 14. The moving direction of the piston assembly 20 is defined as the first direction. The control valve 31 can selectively control the compressed gas to enter the first space 13 and to discharge the compressed gas from the first space 13, thereby controlling the piston assembly 20 to move along the first direction. The piston assembly 20 includes a magnetic element 23, and the sensor 32 is magnetically coupled to the magnetic element 23. The sensor 32 can sense the stroke of the piston assembly 20 moving along the first direction.

[0014] This shifting device, by placing the control valve 31 and sensor 32 respectively in the second space 14, avoids exposing the control valve 31 and sensor 32 to the outside of the housing assembly 10, resulting in better dustproof, waterproof, and drop-proof performance, effectively improving the protection level of the control valve 31 and sensor 32. Furthermore, by placing the sensor 32 in the second space 14, in some exemplary application scenarios, such as when the shifting device is in a dusty environment containing iron powder, because the sensor 32 is located in the second space 14, iron powder is less likely to be attracted to the magnetic component 23, thus improving the reliability of the magnetic coupling between the sensor 32 and the magnetic component 23.

[0015] See Figure 1 , Figure 4 and Figure 5 The housing assembly 10 includes a housing 11 and a cover plate 12. The housing 11 includes a first end portion 111 and a recessed portion 112. The recessed portion 112 is recessed relative to the first end portion 111. The cover plate 12 is limited and connected to or fixedly disposed with the first end portion 111. The cover plate 12 covers the groove of the recessed portion 112. The cavity wall of the second space 14 includes the groove wall of the recessed portion 112 and the wall of the cover plate 12. That is, the second space 14 is located between the groove of the recessed portion 112 and the cover plate 12. The recessed portion 112 provides sufficient assembly space for the control valve 31 and the sensor 32. During assembly, the control valve 31 and the sensor 32 are fixedly installed into the recessed portion 112, and then the cover plate 12 is closed, so that the control valve 31 and the sensor 32 are accommodated inside the second space 14.

[0016] The first end 111 has a first end face 113. Along the second direction, the groove portion 112 is recessed relative to the first end face 113. In this embodiment, the second direction is perpendicular to the first direction. The cover plate 12 fits against the first end face 113. The housing 11 includes a sealing groove portion 114, which is recessed relative to the first end face 113. The sealing groove portion 114 is annular or substantially annular. The housing assembly 10 includes a seal 15, at least a portion of which is located in the sealing groove portion 114. When the cover plate 12 is assembled into the housing 11, the seal 15 is in sealing contact with the cover plate 12, which helps to improve the sealing performance of the second space 14 and makes the dustproof and waterproof effects better.

[0017] Along the second direction, the housing 11 includes a second end 115 opposite to the first end 111. The second end 115 can be used to connect to the vehicle transmission. The second end 115 has a second end face 116, which can serve as a mating surface with the vehicle transmission. The housing 11 has a cable outlet channel 117. One end of the cable outlet channel 117 passes through the second space 14, and the other end of the cable outlet channel 117 passes through the second end face 116. The control assembly includes a first wiring harness assembly 33 and a second wiring harness assembly 34. A portion of the first wiring harness assembly 33 and a portion of the second wiring harness assembly 34 are located in the second space 14. The first wiring harness assembly 33 is electrically connected to the control valve 31 and passes through the cable outlet channel 117. The second wiring harness assembly 34 is electrically connected to the sensor 32 and passes through the cable outlet channel 117. When the shifting device is assembled into the vehicle's transmission, the first wiring harness assembly 33 and the second wiring harness assembly 34 are first plugged into the corresponding wiring harnesses in the transmission. Then, the second end face 116 is fitted into the transmission, and the housing assembly 10 is fixed to the transmission. In this shifting device, a wiring channel 117 is provided in the housing 11, through which the first wiring harness assembly 33 and the second wiring harness assembly 34 pass. This internal wiring structure design further improves the sealing performance of the shifting device, resulting in better dustproof and waterproof performance.

[0018] In one embodiment, see Figure 3 The housing assembly 10 includes a working channel 16 and a first exhaust port 18. The working channel 16 is connected to a first space 13, and the first exhaust port 18 is connected to a second space 14 and the external space of the housing assembly 10. A control valve 31 can control the connection between the working channel 16 and the second space 14. Specifically, the housing assembly 10 includes a first air inlet 17 for connecting to an air source. The control valve 31 can control the working channel 16 to switch between being connected to the first air inlet 17 and the second space 14. When the control valve 31 controls the working channel 16 to be connected to the first air inlet 17, the working channel 16 is disconnected from the second space 14. At this time, the compressed gas from the air source enters the first space 13 through the first air inlet 17, the control valve 31, and the working channel 16. When the control valve 31 controls the working channel 16 to be connected to the second space 14, the working channel 16 is disconnected from the first air inlet 17. At this time, the compressed gas in the first space 13 enters the second space 14 through the working channel 16 and the control valve 31, and is discharged to the external space of the housing assembly 10 through the first exhaust port 18.

[0019] In another embodiment, see Figure 1 , Figure 4 and Figure 5The housing assembly 10 includes a working channel 16 and a first exhaust port 18. The working channel 16 is connected to a first space 13. The shifting device includes an exhaust pipe 40 located in a second space 14. The exhaust pipe 40 has a channel (not shown in the figure), which is connected to the first exhaust port 18. The first exhaust port 18 connects the channel of the exhaust pipe 40 to the external space of the housing assembly 10. The control valve 31 can control the connection between the working channel 16 and the channel of the exhaust pipe 40. Specifically, the housing assembly 10 includes a first air inlet 17 for connecting to an air source. The control valve 31 can control the switching connection between the working channel 16 and the channels of the first air inlet 17 and the exhaust pipe 40, respectively. When control valve 31 connects the working channel 16 to the first air inlet 17, the working channel 16 is disconnected from the exhaust pipe 40. At this time, compressed gas from the air source enters the first space 13 through the first air inlet 17, control valve 31, and working channel 16. When control valve 31 connects the working channel 16 to the exhaust pipe 40, the working channel 16 is disconnected from the first air inlet 17. At this time, compressed gas in the first space 13 enters the exhaust pipe 40 through the working channel 16 and control valve 31, and is discharged to the external space of the housing assembly 10 through the first exhaust port 18. The use of the exhaust pipe 40 prevents moisture in the compressed gas from accumulating in the second space 14 during exhaust, which is beneficial for protecting the components in the second space 14.

[0020] See Figure 4 The piston assembly 20 includes a piston head assembly 21 and a piston rod 22. The piston head assembly 21 is located in the first space 13. A magnetic component 23 is limited or fixedly connected to the piston head assembly 21. A portion of the piston head assembly 21 is connected to the piston rod 22. The first space 13 includes a first air chamber 131 and a second air chamber 132. At least a portion of the first air chamber 131 is located on one side of the piston head assembly 21, and at least a portion of the second air chamber 132 is located on the other side of the piston head assembly 21. The working channel 16 includes a first channel 161 and a second channel 162. The first channel 161 and the first air chamber 131 are connected. The second channel 162 and the second air chamber 132 are connected. The control valve 31 includes a first valve 311, a second valve 312 and a manifold 313. In this embodiment, the control component includes a circuit board 35, which is located in the second space 14. The first valve 311, the second valve 312 and the first wiring harness assembly 33 are respectively integrated on the circuit board 35. The manifold 313 has an exhaust channel (not shown in the figure). The exhaust channel and the exhaust pipe 40 are connected. The first valve 311 can control the connection between the first channel 161 and the exhaust channel. The second valve 312 can control the connection between the second channel 162 and the exhaust channel.

[0021] Along the first direction, the shifting device has a first position (not shown in the figure), a second position, and a third position (not shown in the figure). Specifically, when the piston rod 22 of the piston assembly 20 is in the first position (not shown in the figure), the second position, and the third position (not shown in the figure), they correspond to different gears of the car, namely, the first gear, the second gear, and the third gear. The first position and the third position are the extreme positions of the piston rod 22 in the first direction, and the second position is the middle position of the piston rod 22 in the first direction. Specifically, the first gear and the third gear can be the forward gear and the reverse gear, respectively, and the second gear can be the neutral gear of the car.

[0022] The first valve 311 and the second valve 312 are both two-position three-way solenoid valves. The first valve 311 and the second valve 312 each include a second air inlet, a second working port, and a second exhaust port. The first valve 311 and the second valve 312 each include a valve core, which controls the second working port to switch between the corresponding second air inlet and second exhaust port. It should be noted that, since two-position three-way solenoid valves are relatively common pneumatic components, the second air inlet, the second working port, the second exhaust port, and the valve core are not shown in the figure.

[0023] The second air inlet is connected to the first air inlet 17, and the second exhaust port is connected to the second space 14 or to the exhaust channel. The second working port of the first valve 311 is connected to the first channel 161, and the second working port of the second valve 312 is connected to the second channel 162.

[0024] When the first valve 311 is energized, its valve core controls the second working port to connect with the second air inlet, allowing compressed gas from the air source to enter the first air chamber 131 via the first channel 161. When the first valve 311 is de-energized, its valve core controls the second working port to connect with the second exhaust port, allowing compressed gas from the first air chamber 131 to enter the second space 14 or the exhaust channel via the first channel 161. Correspondingly, when the second valve 312 is energized, its valve core controls the second working port to connect with the second air inlet, allowing compressed gas from the air source to enter the second air chamber 132 via the second channel 162. When the second valve 312 is de-energized, its valve core controls the second working port to connect with the second exhaust port, allowing compressed gas from the second air chamber 132 to enter the second space 14 or the exhaust pipe 40 via the second channel 162.

[0025] The first exhaust port 18 is provided with a one-way valve 181. The one-way valve 181 is unidirectionally directed from the second space 14 to the external space of the housing assembly 10. That is, the one-way valve 181 allows the compressed gas in the second space 14 or the exhaust pipe 40 to be discharged from the first exhaust port 18 to the external space of the housing assembly 10. The one-way valve 181 prevents the medium (such as water, air, dust, etc.) in the external space of the housing assembly 10 from entering the second space 14 or the exhaust pipe 40, thereby helping to further improve the protection level of the shifting device.

[0026] The above examples illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A gear shifting device, characterized in that, The shifting device includes a housing assembly (10), an actuation assembly, and a control assembly. The shifting device includes a first space (13). The actuation assembly includes a piston assembly (20), a portion of which is located in the first space (13). The control assembly includes a control valve (31). The shifting device includes a second space (14), the control valve (31) is located in the second space (14). The direction of movement of the piston assembly (20) is defined as a first direction. The control valve (31) can control the piston assembly (20) to move along the first direction.

2. The shifting device according to claim 1, characterized in that: The housing assembly (10) includes a housing (11) and a cover plate (12). The housing (11) includes a first end (111) and a groove (112). The groove (112) is recessed relative to the first end (111). The cover plate (12) is limited and connected or fixedly disposed to the first end (111). The cavity wall of the second space (14) includes the groove wall of the groove (112) and the wall of the cover plate (12).

3. The shifting device according to claim 2, characterized in that: The first end (111) has a first end face (113), the groove (112) is recessed relative to the first end face (113), the cover plate (12) fits against the first end face (113), the housing (11) includes a sealing groove (114), the sealing groove (114) is recessed relative to the first end face (113), the sealing groove (114) is annular or substantially annular, the housing assembly (10) includes a seal (15), at least a portion of the seal (15) is located in the sealing groove (114), the seal (15) is in sealing contact with the cover plate (12).

4. The gear shifting device according to claim 1, characterized in that: The housing assembly (10) includes a working channel (16) and a first exhaust port (18). The working channel (16) is connected to the first space (13), and the first exhaust port (18) is connected to the second space (14) and the external space of the housing assembly (10). The control valve (31) is capable of controlling the connection between the working channel (16) and the second space (14).

5. The gear shifting device according to claim 1, characterized in that: The housing assembly (10) includes a working channel (16) and a first exhaust port (18). The working channel (16) is connected to the first space (13). The shifting device includes an exhaust pipe (40). The exhaust pipe (40) is located in the second space (14). The channel of the exhaust pipe (40) is connected to the first exhaust port (18). The first exhaust port (18) is connected to the channel of the exhaust pipe (40) and the external space of the housing assembly (10). The control valve (31) is capable of controlling the connection between the working channel (16) and the channel of the exhaust pipe (40).

6. The shifting device according to claim 4 or 5, characterized in that: The first exhaust port (18) is provided with a one-way valve (181), and the one-way valve (181) is unidirectionally directed from the second space (14) to the external space of the housing assembly (10).

7. The shifting device according to claim 5, characterized in that: The piston assembly (20) includes a piston head assembly (21) and a piston rod (22). The piston head assembly (21) is located in the first space (13). A portion of the piston head assembly (21) is connected to the piston rod (22). The first space (13) includes a first air chamber (131) and a second air chamber (132). At least a portion of the first air chamber (131) is located on one side of the piston head assembly (21), and at least a portion of the second air chamber (132) is located on the other side of the piston head assembly (21). The working channel (16) includes a first channel (161) and a second channel. (162), the first channel (161) and the first air chamber (131) are connected, the second channel (162) and the second air chamber (132) are connected, the control valve (31) includes a first valve (311), a second valve (312) and a manifold (313), the manifold (313) has an exhaust channel, the exhaust channel and the exhaust pipe (40) are connected, the first valve (311) can control the first channel (161) and the exhaust channel to be connected, and the second valve (312) can control the second channel (162) and the exhaust channel to be connected.

8. The gear shifting device according to claim 1, characterized in that: The housing assembly (10) includes a housing (11), the housing (11) includes a second end (115), the second end (115) has a second end face (116), the housing (11) has a cable outlet channel (117), one end of the cable outlet channel (117) passes through the second space (14), and the other end of the cable outlet channel (117) passes through the second end face (116). The control assembly includes a first wiring harness assembly (33), a portion of the first wiring harness assembly (33) is located in the second space (14), the first wiring harness assembly (33) is electrically connected to the control valve (31), and the first wiring harness assembly (33) passes through the cable outlet channel (117).

9. The gear shifting device according to claim 1, characterized in that: The control component includes a sensor (32) located in the second space (14), the piston assembly (20) includes a magnetic element (23), the sensor (32) is magnetically coupled to the magnetic element (23), and the sensor (32) is capable of sensing the stroke of the piston assembly (20) moving along the first direction.

10. The shifting device according to claim 9, characterized in that: The housing assembly (10) includes a housing (11), the housing (11) includes a second end (115), the second end (115) has a second end face (116), the housing (11) includes a cable outlet channel (117), one end of the cable outlet channel (117) passes through the second space (14), and the other end of the cable outlet channel (117) passes through the second end face (116). The control assembly includes a second wiring harness assembly (34), a portion of the second wiring harness assembly (34) is located in the second space (14), the second wiring harness assembly (34) is electrically connected to the sensor (32), and the second wiring harness assembly (34) passes through the cable outlet channel (117).

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