Gear shift self-locking mechanism, gear shift control device and vehicle

Abstract

This application provides a shift self-locking mechanism, a shift control device, and a vehicle, relating to the field of vehicle component technology. The shift self-locking mechanism includes: a housing and a locking assembly; the housing has a receiving cavity, and a portion of the locking assembly is disposed within the receiving cavity; a first elastic member and a second elastic member, both disposed within the receiving cavity, with the second elastic member sleeved around the periphery of the first elastic member; and a driving assembly disposed on the housing, with both the first and second elastic members abutting between the locking assembly and the driving assembly; the driving assembly drives at least one of the first and second elastic members to compress, causing a portion of the locking assembly to protrude from the housing, thereby locking the shift fork shaft. The shift self-locking mechanism of this application, by having its driving assembly compress at least one of the first and second elastic members, can provide a wider range of self-locking forces.

Description

Technical Field

[0001] This application relates to the field of vehicle component technology, and in particular to a shift self-locking mechanism, a shift control device, and a vehicle. Background Technology

[0002] In different scenarios, the self-locking force required by the vehicle's shift self-locking mechanism varies.

[0003] Related technology provides a shift self-locking mechanism, including a drive unit, a telescopic rod, and an elastic self-locking pin for abutting against the shift fork shaft. The drive unit drives the telescopic end of the telescopic rod to extend and retract, thereby causing the elastic self-locking pin to extend and retract along the axial direction of the elastic self-locking pin, so as to provide different magnitudes of self-locking force on the shift fork shaft.

[0004] However, the self-locking force provided by the drive unit to extend and retract the telescopic rod is not higher than the limit elastic force of the elastic self-locking pin, making it difficult to apply the shift self-locking mechanism to scenarios with a wide range of self-locking force requirements. Summary of the Invention

[0005] This application provides a shift self-locking mechanism, a shift control device, and a vehicle to solve the problem that the shift self-locking mechanism can only provide a self-locking force corresponding to the elastic force provided by the elastic self-locking pin, resulting in a limited self-locking force provided by the shift self-locking mechanism.

[0006] In a first aspect, embodiments of this application provide a shift self-locking mechanism, comprising:

[0007] The housing and locking assembly have a receiving cavity inside the housing, and part of the locking assembly is disposed inside the receiving cavity;

[0008] The first elastic element and the second elastic element are both disposed within the receiving cavity, and the second elastic element is sleeved around the periphery of the first elastic element.

[0009] A drive assembly is mounted on the housing, and both the first elastic element and the second elastic element abut against the locking assembly and the drive assembly.

[0010] The drive assembly compresses at least one of the first and second elastic elements to cause a portion of the locking assembly to protrude from the housing, thereby locking the shift fork shaft.

[0011] In one possible implementation, the drive assembly includes a first drive member and a second drive member, the second drive member being connected to the housing and movable relative to the housing, and the first drive member being connected to the second drive member and movable relative to the second drive member.

[0012] In one possible implementation, the second drive member is threadedly connected to the cavity wall of the receiving cavity; the second drive member has a connecting hole, and the first drive member is threadedly connected to the wall of the connecting hole.

[0013] In one possible implementation, the first driving member includes a driving segment and a limiting segment arranged sequentially; the connecting hole includes a threaded hole segment and a limiting hole segment arranged sequentially.

[0014] The drive section is threaded onto the threaded hole section, and the limiting section is set inside the limiting hole section. The diameter of the limiting section is larger than the diameter of the threaded hole section.

[0015] In one possible implementation, the shift self-locking mechanism further includes a third elastic element disposed within the receiving cavity, the third elastic element being sleeved around the periphery of the second elastic element, the third elastic element being disposed between the locking assembly and the second driving member, and a gap being formed between the locking assembly and the second driving member and the third elastic element.

[0016] In one possible implementation, the rotation directions of the first and third elastic elements are opposite to those of the second elastic element.

[0017] In one possible implementation, the housing has a through hole communicating with the receiving cavity; the locking assembly includes:

[0018] Ball bearings are positioned within the receiving cavity, and the diameter of the ball bearings is larger than the diameter of the through hole.

[0019] A top pin is disposed within the receiving cavity. One end of the top pin abuts against the ball, and the first elastic element and the second elastic element abut against the other end of the top pin.

[0020] In one possible implementation, the top pin has a first ring platform and a second ring platform located around the first ring platform, a first elastic member is sleeved on the first ring platform, and a second elastic member is sleeved on the second ring platform.

[0021] Secondly, embodiments of this application provide a gear shifting control device, including:

[0022] The first aspect provides any shift self-locking mechanism, wherein the shift self-locking mechanism is used to be mounted on the gearbox housing;

[0023] The shift fork shaft has a locking part, and part of the shift self-locking mechanism is embedded in the locking part.

[0024] Thirdly, embodiments of this application provide a vehicle, including a vehicle body and a shift control device provided in the second aspect, disposed on the vehicle body.

[0025] The shift self-locking mechanism, shift control device, and vehicle provided in this application embodiment are characterized by a housing and a locking assembly. Part of the locking assembly is housed within a cavity of the housing, which protects it. A first elastic element and a second elastic element are both housed within the cavity, with the second elastic element fitted around the periphery of the first elastic element, saving space. Furthermore, the combined use of the two elastic elements provides a wider range of elastic force. A drive assembly is mounted on the housing, with both the first and second elastic elements abutting between the locking assembly and the drive assembly. The drive assembly precisely controls the compression of the first and second elastic elements to drive the locking assembly to lock the shift fork shaft. During this process, the drive assembly compresses at least one of the first and second elastic elements, providing a wider range of self-locking force, thus enabling the shift self-locking mechanism to be applied to scenarios requiring a wide range of self-locking force. Attached Figure Description

[0026] 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 the embodiments of this application.

[0027] Figure 1 This is a schematic diagram of the shifting self-locking mechanism provided in the embodiments of this application;

[0028] Figure 2 for Figure 1 Internal structure diagram;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure when the first elastic element is in operation;

[0030] Figure 4 for Figure 2 A schematic diagram of the structure of the second elastic element during operation;

[0031] Figure 5 for Figure 2 A schematic diagram of the structure of the third elastic element during operation;

[0032] Figure 6 This is a schematic diagram showing the connection between the shift self-locking device provided in this application embodiment and the vehicle's gearbox housing.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10-Shift self-locking mechanism; 20-Shift fork shaft; 21-Locking part; 30-Transmission housing; 40-Sealing ring;

[0035] 100 - Housing; 110 - Receiving cavity; 120 - Through hole;

[0036] 200 - Locking assembly; 210 - Ball bearing; 220 - Top pin; 221 - First ring stage; 222 - Second ring stage; 223 - Third ring stage;

[0037] 300 - First elastic element;

[0038] 400 - Second elastic element;

[0039] 500 - Drive assembly; 510 - First drive component; 511 - Drive segment; 512 - Limiting segment; 520 - Second drive component; 530 - Connecting hole; 531 - Threaded hole segment; 532 - Limiting hole segment;

[0040] 600 - Third elastic element;

[0041] 700-gap.

[0042] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: spline curves without arrows indicate solid components, that is, components with solid structures; spline curves with arrows indicate virtual components, that is, components without solid structures.

[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the embodiments of this application in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0044] 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.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the embodiments of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships (if present), are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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, and therefore should not be construed as a limitation on the embodiments of this application. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Where there is no conflict, embodiments of this application and the various features thereof can be combined with each other, all of which are within the scope of protection of this application.

[0046] In different scenarios, drivers have varying requirements for the feel and force of the gear shift lever, which in turn leads to different requirements for the locking force of the gear shift self-locking mechanism. For example, different vehicles have different lever ratios for their gear shift controls. For the same feel and force requirements for the gear shift lever, vehicles with a smaller lever ratio require a larger gear shifting force, while vehicles with a larger lever ratio require a smaller gear shifting force. These different gear shifting force requirements result in different locking force requirements for the gear shift self-locking mechanisms in different vehicles.

[0047] Related technology provides a shift self-locking mechanism, including a drive unit, a telescopic rod, and an elastic self-locking pin for locking the shift fork shaft. The drive unit drives the telescopic end of the telescopic rod to extend and retract, thereby causing the elastic self-locking pin to extend and retract along the axial direction of the elastic self-locking pin.

[0048] However, the shift self-locking mechanism can only provide a self-locking force corresponding to the elastic force provided by the elastic self-locking pin, and cannot provide a self-locking force exceeding the limit elastic force provided by the elastic self-locking pin. As a result, the self-locking force provided by the shift self-locking mechanism is limited and cannot be applied to scenarios with a wide range of self-locking force requirements.

[0049] For the above technical issues, please refer to [link / reference]. Figure 1 and Figure 2This application provides a shift self-locking mechanism 10. It includes: a housing 100 and a locking assembly 200. The housing 100 has a receiving cavity 110, and a portion of the locking assembly 200 is disposed within the receiving cavity 110; a first elastic member 300 and a second elastic member 400, both disposed within the receiving cavity 110, with the second elastic member 400 sleeved around the periphery of the first elastic member 300; and a driving assembly 500, disposed on the housing 100, with both the first elastic member 300 and the second elastic member 400 abutting between the locking assembly 200 and the driving assembly 500. The driving assembly 500 compresses at least one of the first elastic member 300 and the second elastic member 400, causing a portion of the locking assembly 200 to protrude from the housing 100, thereby locking the shift fork shaft 20.

[0050] By providing a housing 100 and a locking assembly 200, with a portion of the locking assembly 200 disposed within the receiving cavity 110 of the housing 100, the housing 100 can protect the locking assembly 200.

[0051] By providing a first elastic element 300 and a second elastic element 400, both disposed within the receiving cavity 110, with the second elastic element 400 sleeved around the periphery of the first elastic element 300, radial space is effectively utilized. Compared to arranging the two elastic elements in series or parallel, this coaxial sleeve arrangement significantly reduces the axial length of the locking assembly 200. Within the same self-locking force adjustment range, this design allows for a smaller overall size of the shift self-locking mechanism 10, making it easier to install in space-constrained transmission systems.

[0052] Furthermore, the combined use of the first elastic element 300 and the second elastic element 400, with the second elastic element 400 fitted around the first elastic element 300, forms a composite elastic element assembly that can provide a wider range of elastic force. For example, when a smaller elastic force is required, the first elastic element 300 can be relied upon primarily; when a larger elastic force is required, both the first elastic element 300 and the second elastic element 400 can function simultaneously, thereby covering a broader range of elastic force. This design provides a basis for subsequent self-locking force adjustment.

[0053] By setting a drive assembly 500, which is mounted on the housing 100, the first elastic element 300 and the second elastic element 400 are both abutted between the locking assembly 200 and the drive assembly 500. The drive assembly 500 can precisely control the degree of compression of the first elastic element 300 and the second elastic element 400 to drive the locking assembly 200 to lock the shift fork shaft 20. In this process, the drive assembly 500 drives at least one of the first elastic element 300 and the second elastic element 400 to compress, which can provide a wider range of self-locking force.

[0054] The preferred technical solution of the shift self-locking mechanism 10 of this application embodiment is described below with reference to the accompanying drawings.

[0055] In some embodiments, see Figure 2 The drive assembly 500 includes a first drive member 510 and a second drive member 520. The second drive member 520 is connected to the housing 100 and is movable relative to the housing 100. The first drive member 510 is connected to the second drive member 520 and is movable relative to the second drive member 520.

[0056] Since the second driving member 520 is movably connected to the housing 100, and the first driving member 510 is movably connected to the second driving member 520, a two-stage driving structure is formed. This structure allows the adjustment process to be divided into two stages: First, a larger adjustment can be made by simultaneously driving the first elastic member 300 and the second elastic member 400 through the second driving member 520; a smaller adjustment can be made by driving the first elastic member 300 through the first driving member 510 or by driving the second elastic member 400 through the second driving member 520. This two-stage adjustment mechanism allows the shift self-locking mechanism 10 to provide both a large and a small self-locking force to adapt to the self-locking force requirements in different scenarios.

[0057] It should be noted that when the second driving element 520 drives the second elastic element 400, tools can be used to keep the first driving element 510 and the first elastic element 300 in their current positions to achieve precise driving.

[0058] Furthermore, the shift self-locking mechanism 10 can cover a wide range while also enabling precise control. For example, the general range of the self-locking force can be adjusted by the second drive member 520, and then precisely adjusted by the first drive member 510, thereby achieving high-precision control within a wide adjustment range.

[0059] It should also be noted that the first drive member 510 is connected to the second drive member 520, rather than directly to the housing 100, which reduces the radial dimension of the shift self-locking mechanism 10. Compared to mounting two drive members side by side, this design is more compact, enabling the miniaturization of the shift self-locking mechanism 10.

[0060] The two-stage drive structure provides a certain degree of redundancy. Even if one drive component fails, the other can still maintain basic functionality. For example, if the first drive component 510 fails, the second drive component 520 can still adjust the self-locking force to ensure the basic operation of the shift self-locking mechanism 10.

[0061] In some specific embodiments, the first driving member 510 and the second driving member 520 are both hydraulic cylinders or electric telescopic cylinders, which can precisely control the first elastic member 300 and the second elastic member 400.

[0062] For other specific implementations, please refer to Figure 2 The second driving member 520 is threadedly connected to the cavity wall of the receiving cavity 110; the second driving member 520 has a connecting hole 530, and the first driving member 510 is threadedly connected to the hole wall of the connecting hole 530.

[0063] Threaded connections provide a robust mechanical connection that is better resistant to vibration and impact compared to other connection methods (such as simple sliding connections).

[0064] Furthermore, due to the threaded connection design, installation and disassembly can be completed with a simple rotation operation, reducing maintenance difficulty.

[0065] In specific implementation, the end of the second driving member 520 that is away from the second elastic member 400 is an external hexagon, and the end of the first driving member 510 that is away from the first elastic member 300 is an internal hexagon. Twisting the second driving member 520 can compress or extend the second elastic member 400, and twisting the first driving member 510 can compress or extend the first elastic member 300.

[0066] For some specific implementation methods, please refer to Figure 2 The first driving member 510 includes a driving section 511 and a limiting section 512 arranged in sequence; the connecting hole 530 includes a threaded hole section 531 and a limiting hole section 532 arranged in sequence; the driving section 511 is threadedly connected to the threaded hole section 531, and the limiting section 512 is disposed in the limiting hole section 532, the diameter of the limiting section 512 being larger than the diameter of the threaded hole section 531.

[0067] In this embodiment, by setting the diameter of the limiting segment 512 to be larger than the diameter of the threaded hole segment 531, when the driving segment 511 rotates within the threaded hole segment 531, the limiting segment 512 also moves within the limiting hole segment 532. When the driving segment 511 rotates to a preset position, the limiting segment 512 will be locked at the bottom of the limiting hole segment 532. This prevents the driving segment 511 from rotating excessively and ensures that the limiting segment 512 can only move within the limiting hole segment 532.

[0068] For other implementation methods, please refer to Figure 2 When the end of the second driving member 520 rotates to a position that contacts the end of the housing 100, the housing 100 limits the second driving member 520.

[0069] In some embodiments, see Figure 2The shift self-locking mechanism 10 also includes a third elastic element 600, which is disposed in the receiving cavity 110. The third elastic element 600 is sleeved on the periphery of the second elastic element 400 and is disposed between the locking assembly 200 and the second driving member 520. At least one of the locking assembly 200 and the second driving member 520 has a gap 700 with the third elastic element 600.

[0070] By setting a third elastic element 600, when a greater self-locking force is required, it can be achieved by compressing the third elastic element 600. This allows the shift self-locking mechanism 10 to provide a wider range of self-locking force adjustment, thereby improving the applicability of the shift self-locking mechanism 10.

[0071] Specifically, since there is a gap 700 between at least one of the locking assembly 200 and the second driving member 520 and the third elastic member 600, the shift self-locking mechanism 10 can be adjusted in stages. When the required self-locking force is small, only the first elastic member 300 and the second elastic member 400 can be adjusted; when a larger self-locking force is required, the third elastic member 600 can be further adjusted.

[0072] It should be noted that when the first elastic element 300, the second elastic element 400 and the third elastic element 600 are used simultaneously, the shift self-locking mechanism 10 is not prone to failure. Even if one of the elastic elements fails, the other elastic elements can still provide elastic force.

[0073] It should also be noted that this application does not limit the specific types of the first elastic element 300, the second elastic element 400, and the third elastic element 600, as long as they can provide elasticity. For example, the first elastic element 300, the second elastic element 400, and the third elastic element 600 are all springs or elastic sleeves.

[0074] Furthermore, the rotation directions of the first elastic element 300 and the third elastic element 600 are opposite to the rotation direction of the second elastic element 400.

[0075] When an elastic element breaks, the broken part moves along its original direction of rotation. If all elastic elements rotate in the same direction, the broken elastic element may become embedded between the coils of adjacent elastic elements. Therefore, in this embodiment, the rotation directions of the first elastic element 300 and the third elastic element 600 are both set to be opposite to the rotation direction of the second elastic element 400. When one of the elastic elements breaks, the broken elastic element cannot be embedded in the adjacent elastic element, which can effectively prevent the adjacent elastic elements from getting stuck after the elastic element breaks, thus improving the stability of the shift self-locking mechanism 10.

[0076] Furthermore, the elastic elements vibrate during compression and release. If all elastic elements rotate in the same direction and have similar vibration frequencies, resonance is likely to occur. Therefore, in this embodiment, the rotation directions of the first elastic element 300 and the third elastic element 600 are set to be opposite to those of the second elastic element 400, and the vibration frequencies of the first elastic element 300 and the third elastic element 600 are different from those of the second elastic element 400. This effectively avoids resonance in the entire shift self-locking mechanism 10, thereby improving the operational stability of the shift self-locking mechanism 10.

[0077] In other embodiments, please refer to Figure 2 The housing 100 has a through hole 120 communicating with the receiving cavity 110; the locking assembly 200 includes: a ball 210 disposed in the receiving cavity 110, the diameter of the ball 210 being larger than the diameter of the through hole 120; and a top pin 220 disposed in the receiving cavity 110, one end of the top pin 220 abutting against the ball 210, and the first elastic member 300 and the second elastic member 400 both abutting against the other end of the top pin 220.

[0078] In this embodiment, a ball bearing 210 is provided, which is disposed within the receiving cavity 110. The diameter of the ball bearing 210 is larger than the diameter of the through hole 120. Under the action of the first elastic member 300 and the second elastic member 400, the top pin 220 pushes the ball bearing 210, causing a portion of the ball bearing 210 to protrude from the through hole 120. This portion of the ball bearing 210 can contact the locking part 21 of the shift fork shaft 20 to lock the shift fork shaft 20. Furthermore, the ball bearing 210 is a sphere, so when the shift fork shaft 20 moves, the ball bearing 210 will roll rather than slide. Rolling friction produces less wear than sliding friction, which can reduce the wear of the shift fork shaft 20 and the ball bearing 210, and extend their service life.

[0079] In practice, the top pin 220 is clearance-fitted with the housing 100, which not only enables the top pin 220 to be circumferentially positioned, but also allows the top pin 220 to move flexibly in the axial direction.

[0080] Further, please see Figure 2 The top pin 220 has a first ring platform 221 and a second ring platform 222 located around the first ring platform 221. The first elastic member 300 is sleeved on the first ring platform 221 and the second elastic member 400 is sleeved on the second ring platform 222.

[0081] In this embodiment, the first ring platform 221 provides a clear installation position for the first elastic element 300, and the second ring platform 222 provides a clear installation position for the second elastic element 400. No additional positioning tools are required to install the first elastic element 300 and the second elastic element 400, which simplifies the assembly process of the first elastic element 300 and the second elastic element 400.

[0082] Furthermore, the first ring platform 221 can limit the radial displacement of the first elastic member 300, and the second ring platform 222 can limit the radial displacement of the second elastic member 400, thereby preventing the first elastic member 300 and the second elastic member 400 from interfering with each other.

[0083] Furthermore, please see Figure 2 The top pin 220 also has a third ring platform 223, which is located around the second ring platform 222. The third elastic element 600 is sleeved on the third ring platform 223. For the specific configuration and function of the third ring platform 223, please refer to the first ring platform 221 and the second ring platform 222, which will not be described again here.

[0084] In some other embodiments (not shown in this embodiment), the top pin 220 has a first annular groove and a second annular groove located around the first annular groove. The first annular groove and the second annular groove have different depths. The first elastic member 300 abuts in the first annular groove, and the second elastic member 400 abuts in the second annular groove.

[0085] In this embodiment, the first annular groove not only provides a defined mounting position for the first elastic member 300, but also restricts the radial displacement of the first elastic member 300. The second annular groove not only provides a defined mounting position for the second elastic member 400, but also restricts the radial displacement of the second elastic member 400.

[0086] Furthermore, the top pin 220 also has a third annular groove (not shown), which is located around the second annular groove. The depths of the first, second, and third annular grooves decrease sequentially. The first elastic member 300 abuts against the first annular groove, the second elastic member 400 abuts against the second annular groove, and the third elastic member 600 abuts against the third annular groove. The third annular groove not only provides a clear mounting position for the third elastic member 600 but also restricts its radial displacement.

[0087] In some embodiments, see Figure 2 The receiving cavity 110 between the housing 100, the ball 210 and the top pin 220 can be used to store gear oil splashed and stirred up by the gearbox lubrication, and can also be used to add lubricating oil compatible with the gearbox gear oil to lubricate the ball 210 and the top pin 220, so that the ball 210 rotates more smoothly and the axial movement of the ball 210 and the top pin 220 is smoother.

[0088] The shifting self-locking mechanism 10 provided in this application embodiment includes, but is not limited to, the following application scenarios:

[0089] In the initial state, please refer to Figure 2 and Figure 6Under the combined action of the first elastic member 300 and the second elastic member 400, the top pin 220 pushes a portion of the ball 210 out of the through hole 120; during shifting self-locking, the ball 210 outside the through hole 120 is embedded in the locking part 21 of the shift fork shaft 20 to restrict the movement of the shift fork shaft 20, so as to realize the self-locking of the shift fork shaft 20.

[0090] Depending on the different vehicle requirements for self-locking force, the self-locking force can be adjusted in small, medium, and large ranges. The specific adjustment methods are as follows:

[0091] Minor adjustments: Please refer to [link / reference] Figure 3 By screwing in the first drive member 510, the first drive member 510 drives the first elastic member 300 to compress, thereby increasing the elastic force of the first elastic member 300. The elastic force of the first elastic member 300 acts on the shift fork shaft 20 through the top pin 220 and the ball 210, thereby achieving a slight increase in the self-locking force.

[0092] Medium range adjustment: Please refer to Figure 4 Simultaneously, the first drive member 510 and the second drive member 520 are screwed in, so that the first drive member 510 and the second drive member 520 drive the first elastic member 300 and the second elastic member 400 to compress, thereby increasing the elastic force of the first elastic member 300 and the second elastic member 400. The elastic force of the first elastic member 300 and the second elastic member 400 acts on the shift fork shaft 20 through the top pin 220 and the ball 210, thereby achieving a moderate increase in the self-locking force.

[0093] Extensive adjustments: Please refer to Figure 5 Continue to screw in the second drive member 520 so that the third elastic member 600 abuts between the top pin 220 and the second drive member 520; further screw in the second drive member 520 so that the second drive member 520 drives the third elastic member 600 to compress. At this time, the elastic forces of the first elastic member 300, the second elastic member 400 and the third elastic member 600 are all applied to the shift fork shaft 20 through the top pin 220 and the ball 210, thereby achieving a significant increase in self-locking force.

[0094] Please see Figure 6 This application embodiment also provides a gear shifting control device, including: any of the aforementioned gear shifting self-locking mechanisms 10, the gear shifting self-locking mechanism 10 being disposed on the gearbox housing 30; a gear shifting fork shaft 20, the gear shifting fork shaft 20 having a locking part 21, and a portion of the gear shifting self-locking mechanism 10 being embedded in the locking part 21.

[0095] In its specific implementation, the end of the shift self-locking mechanism 10 facing away from the shift fork shaft 20 is hexagonal in shape (either external or internal). The shift self-locking mechanism 10 is threadedly connected to the transmission housing 30. Tightening the shift self-locking mechanism 10 will tighten or loosen it. A sealing ring 40 is provided between the shift self-locking mechanism 10 and the transmission housing 30. The sealing ring 40 is installed in the relief groove where the transmission housing 30 and the shift self-locking mechanism 10 are threaded together, thereby achieving a sealed connection between the transmission housing 30 and the shift self-locking mechanism 10.

[0096] It should be noted that this application does not limit the specific structure of the locking part 21, as long as it can cooperate with the shift self-locking mechanism 10 to lock the shift fork shaft 20. In some examples, the locking part 21 is slot-shaped, and the shift self-locking mechanism 10 is embedded in the slot-shaped structure and abuts against the locking part 21. In other examples, the locking part 21 is a snap-fit ​​part, and the shift self-locking mechanism 10 snaps into the locking part 21.

[0097] It should be noted that the shift control device in this embodiment adopts all the technical solutions of any of the aforementioned shift self-locking mechanisms 10, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0098] This application also provides a vehicle, including a vehicle body and the aforementioned gear shifting control device disposed on the vehicle body.

[0099] Specifically, the vehicle in this embodiment adopts all the technical solutions of the aforementioned gear shifting control device, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0100] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A shifting self-locking mechanism, characterized in that, include: A housing (100) and a locking assembly (200), wherein the housing (100) has a receiving cavity (110) and a portion of the locking assembly (200) is disposed within the receiving cavity (110); A first elastic element (300) and a second elastic element (400) are provided in the receiving cavity (110), and the second elastic element (400) is sleeved on the periphery of the first elastic element (300). A drive assembly (500) is disposed on the housing (100), wherein the first elastic member (300) and the second elastic member (400) abut against the locking assembly (200) and the drive assembly (500); The drive assembly (500) compresses at least one of the first elastic element (300) and the second elastic element (400) to cause a portion of the locking assembly (200) to protrude from the housing (100) so that the locking assembly (200) locks the shift fork shaft (20). The drive assembly (500) includes a first drive member (510) and a second drive member (520), the second drive member (520) being connected to the housing (100) and movable relative to the housing (100), the first drive member (510) being connected to the second drive member (520) and movable relative to the second drive member (520).

2. The shifting self-locking mechanism according to claim 1, characterized in that, The second drive member (520) is threaded to the cavity wall of the receiving cavity (110); the second drive member (520) has a connecting hole (530), and the first drive member (510) is threaded to the hole wall of the connecting hole (530).

3. The shifting self-locking mechanism according to claim 2, characterized in that, The first driving member (510) includes a driving section (511) and a limiting section (512) arranged in sequence; the connecting hole (530) includes a threaded hole section (531) and a limiting hole section (532) arranged in sequence. The drive section (511) is threadedly connected to the threaded hole section (531), and the limiting section (512) is disposed in the limiting hole section (532). The diameter of the limiting section (512) is larger than the diameter of the threaded hole section (531).

4. The shifting self-locking mechanism according to claim 1, characterized in that, It also includes a third elastic element (600), which is disposed within the receiving cavity (110). The third elastic element (600) is sleeved around the periphery of the second elastic element (400). The third elastic element (600) is disposed between the locking assembly (200) and the second driving member (520). At least one of the locking assembly (200) and the second driving member (520) has a gap (700) with the third elastic element (600).

5. The shifting self-locking mechanism according to claim 4, characterized in that, The rotation directions of the first elastic element (300) and the third elastic element (600) are opposite to those of the second elastic element (400).

6. The shifting self-locking mechanism according to any one of claims 1-5, characterized in that, The housing (100) has a through hole (120) communicating with the receiving cavity (110); the locking assembly (200) includes: A ball (210) is disposed in the receiving cavity (110), and the diameter of the ball (210) is larger than the diameter of the through hole (120); A top pin (220) is disposed in the receiving cavity (110). One end of the top pin (220) abuts against the ball (210), and the first elastic member (300) and the second elastic member (400) abut against the other end of the top pin (220).

7. The shifting self-locking mechanism according to claim 6, characterized in that, The top pin (220) has a first ring platform (221) and a second ring platform (222) located around the first ring platform (221). The first elastic member (300) is sleeved on the first ring platform (221), and the second elastic member (400) is sleeved on the second ring platform (222).

8. A gear shifting control device, characterized in that, include: The shift self-locking mechanism (10) according to any one of claims 1-7, wherein the shift self-locking mechanism (10) is used to be disposed on the gearbox housing (30); The shift fork shaft (20) has a locking part (21), and part of the shift self-locking mechanism (10) is embedded in the locking part (21).

9. A vehicle, characterized in that, It includes a vehicle body and a gear shifting device as described in claim 8, which is disposed on the vehicle body.

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