Gear shift actuator with emergency parking

Abstract

The present application relates to the technical field of motor vehicle gear shifting, and particularly relates to a gear shifting actuator with emergency parking, comprising: a main driving module and an emergency parking module; the main driving module comprises: a shell, a driving mechanism and an output assembly, the driving mechanism is arranged in the shell, the driving mechanism comprises a driving motor and a transmission assembly; the output assembly is connected with the transmission assembly; the emergency parking module comprises: a support structure, an energy storage driving assembly, a locking assembly and an electromagnetic driving part, the energy storage driving assembly is arranged on the support structure, the locking assembly is matched with the energy storage driving assembly, and the electromagnetic driving part is used for controlling the locking assembly; the energy storage driving assembly is in transmission connection with the transmission assembly. The gear shifting actuator of the present application not only solves the problem of insufficient reliability of the single motor scheme, but also avoids the shortcomings of complex structure and high cost of the double motor scheme, and simultaneously ensures the reliability of the emergency parking function through mechanical energy storage and simple electromagnetic control mode.

Description

Technical Field

[0001] This invention relates to the field of motor vehicle gear shifting technology, and more specifically to a gear shifting actuator with emergency parking function. Background Technology

[0002] Currently, electronic shift actuators are widely used in automotive transmission systems, achieving gear shifting through motor drive and software control. However, this traditional design has significant safety hazards: if the motor fails, the shifting function will be completely disabled, and even emergency parking may be impossible, potentially leading to serious safety issues.

[0003] An actuator for electronic gear shifting is disclosed in the prior art, with the publication number CN208311435U. It uses an electric motor as the sole power source. If the motor fails, the entire system will be unable to work. It lacks redundancy design and backup schemes, thus posing a safety hazard.

[0004] An electronic shift actuator, disclosed in the prior art (publication number CN214171302U), uses a transmission system consisting of a face gear, a worm gear, and a variable radius gear. Its sensor is located on the first-stage gear train, which affects the control accuracy of the actuator.

[0005] Furthermore, an electronic shift actuator, disclosed in the prior art (publication number CN218564363U), includes a main motor assembly and a backup motor. Because it uses two motors, it requires corresponding control circuits and sensors, leading to complex control and high costs. Summary of the Invention

[0006] The purpose of this invention is to provide a gear shift actuator with emergency parking function to solve the problem that traditional electronic gear shifters will completely fail to shift gears or even achieve emergency parking once the motor fails, which poses a safety hazard.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a gear shift actuator with emergency parking, comprising: a main drive module and an emergency parking module;

[0008] The main drive module includes: a housing, a drive mechanism, and an output component. The drive mechanism is disposed inside the housing and includes a drive motor and a transmission component. The output component is connected to the transmission component.

[0009] The emergency parking module includes: a support structure, an energy storage drive component, a locking component, and an electromagnetic drive component. The energy storage drive component is disposed on the support structure and is connected to the transmission component. The locking component cooperates with the energy storage drive component, and the electromagnetic drive component is used to control the locking component.

[0010] The energy storage drive component is connected to the transmission component via a transmission connection.

[0011] Preferably, the transmission assembly includes: a worm gear connected to the drive motor, and a face-toothed worm wheel meshing with the worm gear.

[0012] Preferably, the teeth of the face gear are arranged facing the inside of the housing.

[0013] Preferably, the energy storage drive assembly includes: a drive plate, a drive plate sleeve, and a spiral spring. The outer ring of the drive plate is provided with a locking groove, and the inner ring is provided with teeth that mesh with the transmission assembly. The drive plate sleeve is fixedly connected to the drive plate. The spiral spring is disposed on the outer ring of the drive plate sleeve, and its inner end is engaged with the drive plate sleeve to drive the drive plate sleeve to rotate.

[0014] Preferably, the locking assembly includes: a locking plate and a locking plate return spring, the locking plate being rotatably disposed on the support structure, the locking plate engaging with the locking groove; the locking plate return spring is used to keep the locking plate engaged with the locking groove.

[0015] Preferably, the structure of the locking groove allows the drive plate to rotate only in a single direction when the locking piece is engaged.

[0016] Preferably, the output component includes a sector gear, a magnetic element, and a seal, wherein the magnetic element is disposed on the sector gear, and the seal is used for sealing.

[0017] Preferably, the housing includes: a box body, a breathable membrane, and a box cover, wherein the box body and the box cover are connected, and the breathable membrane is disposed on the box body.

[0018] Preferably, a control circuit board is also provided inside the housing, and the control circuit board is provided with a position sensor for detecting the position of the output component.

[0019] Preferably, the face gear is provided with an operation interface for manual unlocking.

[0020] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this invention are:

[0021] This invention includes a main drive module and an emergency parking module. The main drive module includes a housing, a drive mechanism, and an output component. The drive mechanism includes a drive motor and a transmission component. The emergency parking module includes a support structure, an energy storage drive component, a locking component, and an electromagnetic drive element. In normal shifting mode, the drive motor in the main drive module drives the output component through the transmission component to achieve shifting, while simultaneously storing energy in the energy storage drive component. When entering a fault mode (e.g., drive motor failure), the electromagnetic drive element controls the locking component to release. The energy storage drive component rotates under the action of the stored energy and drives the output component through a transmission connection with the transmission component to achieve emergency parking. The entire process requires no additional power source or complex control system. The shift actuator of this invention not only solves the problem of insufficient reliability of single-motor solutions but also avoids the disadvantages of complex structure and high cost of dual-motor solutions. Furthermore, through mechanical energy storage and simple electromagnetic control, it ensures the reliability of the emergency parking function. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0025] Figure 1 This is an exploded view of a gear shift actuator with emergency parking function according to the present invention;

[0026] Figure 2 This is an exploded view of the main drive module involved in the present invention;

[0027] Figure 3 for Figure 2 A schematic diagram of the box shown;

[0028] Figure 4 for Figure 2 An exploded view of the output sector gear is shown.

[0029] Figure 5 for Figure 2 An exploded view of the drive component is shown.

[0030] Figure 6 This is an enlarged schematic diagram of the emergency parking module involved in the present invention;

[0031] Figure 7 This is an exploded view of the emergency parking module involved in the present invention;

[0032] Figure 8 for Figure 1 A schematic diagram of the box lid shown;

[0033] Figure 9 for Figure 1 A schematic diagram of the box shown from another perspective;

[0034] Figure 10 This is a schematic diagram of the face gear involved in the invention from another perspective.

[0035] 1. Emergency parking module; 11. Support structure; 12. Drive board; 13. Locking plate; 14. Drive board sleeve; 15. Locking plate shaft; 16. Spacer; 17. Gasket; 18. Worm spring; 181. Spring inner end; 182. Spring outer end; 19. Locking plate return spring; 110. Electromagnetic drive component; 2. Main drive module; 21. Housing; 211. Box body; 212. Vent membrane; 213. Box cover; 2111. Positioning shaft; 2112. Terminal one; 2113. Terminal two; 22. Face gear; 221. Operation interface; 23. Transmission assembly; 231. Worm; 232. Drive motor; 24. Output assembly; 241. Magnetic component; 242. Sector gear; 243. Sealing component; 25. Pressure limiting sleeve; 26. O-ring; 27. Control circuit board; 28. Limiting strip; 29. ​​Locking groove. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0038] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in this text will be interpreted accordingly.

[0039] This invention provides a gear shift actuator with emergency parking function, such as... Figures 1-10 As shown, it includes: main drive module 2 and emergency parking module 1.

[0040] Among them, such as Figure 1 and Figure 2 As shown, the main drive module 2 includes: a housing 21, a drive mechanism and an output component 24. The drive mechanism is located inside the housing 21 and includes a drive motor 232 and a transmission component 23. The output component 24 is connected to the transmission component 23.

[0041] Furthermore, such as Figure 4 As shown, the output component 24 includes a sector gear 242, a magnetic element 241, a seal 243, and a rotating shaft sleeve connected to the sector gear. The sector gear 242, as the output end, meshes with the face gear 22 of the transmission component 23 to transmit shifting power; the magnetic element 241 is directly mounted on the sector gear 242; the seal 243 adopts a star-shaped ring structure for sealing between the sector gear 242 and the housing 211. During operation, the sector gear 242 rotates as driven by the drive mechanism, and then outputs torque through the rotating shaft sleeve to achieve gear shifting. The magnetic element 241 cooperates with the Hall sensor on the control circuit board 27 to accurately detect the position of the sector gear 242, while the seal 243 effectively prevents grease leakage and foreign matter ingress, improving the reliability of the system. Compared with the prior art, the output component 24 of this application has a simpler structure, is easier to manufacture, and has better sealing performance.

[0042] Among them, such as Figure 1 , Figure 6 and Figure 7 As shown, the emergency parking module 1 includes: a support structure 11, an energy storage drive assembly, a locking assembly, and an electromagnetic drive component 110. The energy storage drive assembly is disposed on the support structure 11 and is connected to the transmission assembly 23. The locking assembly cooperates with the energy storage drive assembly, and the electromagnetic drive component 110 is used to control the locking assembly. The energy storage drive assembly is drively connected to the transmission assembly 23.

[0043] In normal shifting mode, the drive motor 232 in the main drive module 2 drives the sector gear 242 in the output component 24 through the transmission component 23 to achieve shifting action. Simultaneously, the transmission component 23 stores energy in the energy storage drive component. When entering fault mode, if the drive motor 232 fails, the electromagnetic drive component 110 controls the locking component to release. The energy storage drive component rotates under the stored energy and, through its transmission connection with the transmission component 23, drives the output component 24 to achieve emergency parking. The entire process requires no additional power source or complex control system. In this embodiment, the electromagnetic drive component 110 is an electromagnet or an electromagnetic coil.

[0044] The shift actuator in this embodiment not only solves the problem of insufficient reliability of the single-motor solution, but also avoids the disadvantages of complex structure and high cost of the dual-motor solution. At the same time, it ensures the reliability of the emergency parking function through mechanical energy storage and simple electromagnetic control.

[0045] Furthermore, such as Figure 2 As shown, the transmission assembly 23 includes a worm gear 231 connected to the drive motor 232, and a face gear 22 meshing with the worm gear 231. By employing a two-stage transmission method where the drive motor 232 directly drives the worm gear 231, and the worm gear 231 meshes with the face gear 22, the transmission process is simplified and transmission efficiency is improved. Furthermore, the meshing of the worm gear 231 and the face gear 22 allows for a larger reduction ratio, which is beneficial for providing sufficient output torque. Specifically, the teeth of the face gear 22 are positioned facing inwards towards the housing 21 to prevent grease contamination of other components and to confine the lubricating grease within the transmission area.

[0046] Furthermore, such as Figure 6 and Figure 7As shown, the energy storage drive assembly includes: a drive plate 12, a drive plate sleeve 14, and a spiral spring 18. The outer ring of the drive plate 12 is provided with a locking groove 29, and the inner ring is provided with teeth that mesh with the transmission assembly 23. The drive plate sleeve 14 is fixedly connected to the inner ring of the drive plate 12. The spiral spring 18 is disposed on the outer ring of the drive plate sleeve 14, and its inner end 181 is engaged with the drive plate sleeve 14, and its outer end 182 is engaged with the support structure 11. Specifically, the outer end 182 of the spiral spring 18 is limited by the limiting strip 28 on the support structure 11, thereby storing and releasing energy.

[0047] The drive plate 12 has a locking groove 29 on its outer ring to cooperate with the locking assembly to achieve the locking function, and teeth on its inner ring to mesh with the transmission assembly 23 to transmit power. The drive plate 12 is fixedly connected to the support structure 11 through the drive plate sleeve 14 to form a reliable rotational support, and the spiral spring 18 provides rotational power for the drive plate 12. During normal operation, the main drive module 2 drives the drive plate 12 to rotate, which in turn drives the drive plate sleeve 14 to rotate, thereby compressing the spiral spring 18 to store energy. When emergency parking is required, the locking assembly releases the drive plate 12 under the control of the electromagnetic drive component 110. The spiral spring 18 releases the stored energy to drive the drive plate sleeve 14 and the drive plate 12 to rotate, and the inner ring teeth mesh with the transmission assembly 23 to drive the output assembly 24 to achieve emergency parking. This purely mechanical energy storage and release mechanism is not only simple and reliable in structure, but also requires no additional power source, has a fast response speed, greatly improves the reliability of the emergency parking function, and also reduces system costs.

[0048] Specifically, during normal operation, the drive motor 232 in the main drive module 2 drives the worm gear 231, which in turn drives the face gear 22 to rotate. The teeth on the face gear 22 mesh with the teeth on the inner ring of the drive plate 12, causing the drive plate 12 to rotate, thereby compressing the worm coil spring 18 to store energy. When the drive plate 12 rotates to the correct position, the locking component is engaged in the locking groove 29 on the outer ring of the drive plate 12 to complete the energy storage. When emergency parking is required, the electromagnetic drive component 110 pushes the locking component to disengage from the locking groove 29, and the worm coil spring 18 releases the stored energy to drive the drive plate 12 to rotate. The meshing of the inner ring teeth with the face gear 22 drives the sector gear 242 to achieve emergency parking.

[0049] Specifically, three grooves are provided in the inner ring of the drive plate 12 to increase torque; the drive plate 12 is fixedly connected to the drive plate sleeve 14 by riveting to form an integral whole, and the integral whole is riveted to the support structure 11 by a gasket 17 on one side of the drive plate sleeve 14, thereby achieving reliable rotational support; the worm spring 18 provides rotational power for the drive plate 12.

[0050] Furthermore, such as Figure 6 and Figure 7As shown, the locking assembly includes a locking plate 13 and a locking plate return spring 19. The locking plate 13 is rotatably mounted on the support structure 11 and engages with the locking groove 29. The locking plate return spring 19 is used to keep the locking plate 13 engaged with the locking groove 29.

[0051] Specifically, the locking plate 13 is mounted on the support structure 11 via the locking plate shaft 15 and can rotate around the locking plate shaft 15. Specifically, a spacer 16 can be provided between the locking plate shaft 15 and the locking plate 13. The locking plate return spring 19 keeps the locking plate 13 engaged with the outer ring locking groove 29 of the drive plate 12 when no external force is applied. During normal operation, the locking plate 13 reliably engages in the locking groove 29 under the action of the return spring. Due to the special design of the locking groove 29, the drive plate 12 can only rotate in one direction and cannot move in the opposite direction, thus ensuring the energy storage state of the coil spring 18. When emergency parking is required, the electromagnetic drive component 110 pushes the locking plate 13 to overcome the return spring force, causing the locking plate 13 to disengage from the locking groove 29 and releasing the energy storage mechanism. This mechanical locking structure not only ensures the reliable maintenance of the energy storage state but also, through the automatic reset function of the locking plate return spring 19, allows the system to automatically prepare for the next action after completing one emergency parking action, improving the system's reliability.

[0052] In this embodiment, the structure of the locking groove 29 ensures that when the locking piece 13 is engaged, the drive plate 12 can only rotate in one direction. During normal operation, the drive plate 12 rotates in the energy storage direction (compressing the coil spring 18) under the drive of the main drive module 2, while being blocked by the locking piece 13 in the opposite direction (releasing energy storage). This unidirectional locking structure firstly ensures the reliability of the energy storage process, preventing the coil spring 18 from being accidentally released during energy storage; secondly, unidirectional control achieved through a mechanical structure is more reliable than electrical control, eliminating the need for complex control logic; and thirdly, this locking structure is simple and reliable, effectively reducing system complexity and cost. When emergency parking is required, the electromagnetic drive component 110 pushes the locking piece 13 out of the locking groove 29, thus releasing the unidirectional locking state and allowing the energy storage release process to proceed reliably.

[0053] Furthermore, such as Figure 2 As shown, a control circuit board 27 is also provided inside the housing 21. The control circuit board 27 is equipped with a position sensor for detecting the position of the output component 24. The position sensor detects the position by detecting the position change of the magnetic element 241 on the sector gear 242. Here, the position sensor is a Hall sensor. In addition, the control circuit board 27 is available in two versions: with a controller and without a controller. Both versions can be adapted to the housing 211, thereby improving the product's versatility and flexibility, and facilitating configuration according to different needs.

[0054] Furthermore, such as Figure 3 and Figure 8 As shown, the housing 21 includes: a box body 211, a breathable membrane 212, and a lid 213. The box body 211 and the lid 213 are connected to form a sealed space. The breathable membrane 212 is installed on the box body 211 and is fixed to the box body 211 by ultrasonic welding. The breathable membrane 212 can balance the pressure inside and outside the housing 21, prevent the seal 243 from deforming due to temperature changes, and at the same time prevent moisture and dust from entering. The breathable membrane 212 is ultrasonically welded and is located close to the motor, which is beneficial for motor heat dissipation.

[0055] A positioning shaft 2111 is embedded in the housing 211 for positioning the opposing gear 22. Additionally, terminals 2112 and 2113 are embedded inside the housing 211. Terminal 2112 connects the drive motor 232 to the control circuit board 27, while terminal 2113 connects the control circuit board 27 to the female terminal of an external connector. It should be noted that terminals 2112 and 2113 are only configured for electrical transmission and can be adjusted as needed by those skilled in the art.

[0056] In addition, a pressure limiting sleeve 25 and an O-ring 26 are provided on the housing 21 for sealing the housing 21. The pressure limiting sleeve 25 and the O-ring 26 can adopt existing structures.

[0057] like Figure 9 and Figure 10 As shown, the face gear 22 is further provided with an operation interface 221 for manual unlocking. The outer contour of the operation interface 221 adopts a quincunx shape. When both the main drive module 2 and the emergency parking module 1 fail, the face gear 22 can be manually rotated using a wrench or cable in conjunction with the quincunx interface to achieve gear shifting, providing a last resort for the system. Secondly, since the face gear 22 directly meshes with the output sector gear 242, the gear shifting power can be reliably transmitted by manually operating the face gear 22. In particular, to meet the needs of modular use and improve the flexibility of this embodiment, the main drive module 2 can be used independently when the emergency parking function is not required, at which time the manual unlocking function is particularly important. This design not only improves the reliability of the system, but also has a simple structure and low cost.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0059] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0061] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0062] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0064] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0065] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gear shift actuator with emergency parking function, characterized in that, include: Main drive module (2) and emergency parking module (1); The main drive module (2) includes: a housing (21), a drive mechanism and an output component (24). The drive mechanism is located inside the housing (21) and includes a drive motor (232) and a transmission component (23). The output component (24) is connected to the transmission component (23). The emergency parking module (1) includes: a support structure (11), an energy storage drive assembly, a locking assembly, and an electromagnetic drive component (110). The energy storage drive assembly is disposed on the support structure (11) and is connected to the transmission assembly (23). The locking assembly cooperates with the energy storage drive assembly, and the electromagnetic drive component (110) is used to control the locking assembly. The energy storage drive assembly includes a drive plate (12), a drive plate sleeve (14), and a spiral spring (18). The outer ring of the drive plate (12) is provided with a locking groove (29), and the inner ring is provided with teeth that mesh with the transmission assembly (23). The drive plate sleeve (14) is fixedly connected to the drive plate (12). The spiral spring (18) is disposed on the outer ring of the drive plate sleeve (14), and its inner end is engaged with the drive plate sleeve (14). The locking assembly includes a locking plate (13) and a locking plate return spring (19). The locking plate (13) is rotatably mounted on the support structure (11) and engages with the locking groove (29). The locking plate return spring (19) is used to keep the locking plate (13) engaged with the locking groove (29). The structure of the locking groove (29) allows the drive plate (12) to rotate only in a single direction when the locking piece (13) is engaged.

2. The gear shift actuator with emergency parking function according to claim 1, characterized in that, The transmission assembly (23) includes: a worm gear (231) connected to the drive motor (232), and a face gear (22) meshing with the worm gear (231).

3. The gear shift actuator with emergency parking function according to claim 2, characterized in that, The teeth of the face gear (22) are arranged facing the inside of the housing (21).

4. The gear shift actuator with emergency parking function according to claim 1, characterized in that, The output component (24) includes a sector gear (242), a magnetic element (241), and a seal (243), wherein the magnetic element (241) is disposed on the sector gear (242) and the seal (243) is used for sealing.

5. The gear shift actuator with emergency parking function according to claim 1, characterized in that, The housing (21) includes: a box body (211), a breathable membrane (212) and a box cover (213), wherein the box body (211) is connected to the box cover (213), and the breathable membrane (212) is disposed on the box body (211).

6. The gear shift actuator with emergency parking function according to claim 1, characterized in that, The housing (21) is also provided with a control circuit board (27), and the control circuit board (27) is provided with a position sensor for detecting the position of the output component (24).

7. The gear shift actuator with emergency parking function according to claim 2, characterized in that, The face gear (22) is provided with an operation interface (221) for manual unlocking.

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