Vehicle steering control mechanism

Abstract

Provided is a vehicle steering control mechanism, comprising a shaft assembly (10) and a limiting assembly (20), wherein the shaft assembly (10) comprises a first shaft body (11), a second shaft body (12) and an outer pipe (13); the first shaft body (11) is configured to connect to a steering wheel; the second shaft body (12) is coaxially connected to the first shaft body (11), and moves synchronously with the steering wheel, and the second shaft body (12) is connected to the limiting assembly (20); the limiting assembly (20) is configured to limit the number of rotations of the steering wheel; the outer pipe (13) is coaxially connected to the first shaft body (11) and the second shaft body (12); the second shaft body (12) is mounted in the outer pipe (13); and at least part of the limiting assembly (20) is mounted in the outer pipe (13). The mechanism can limit the number of rotations of the steering wheel, and has a small overall volume, thereby facilitating an arrangement.

Description

Vehicle steering control mechanism Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle steering control mechanism.

[0002] Background of the Invention

[0003] The steering system is an important component of a vehicle, used to control the vehicle's direction of travel, allowing the vehicle to travel stably in a straight line or flexibly turn according to needs. Therefore, simple and convenient operation and stable and reliable use are the basic requirements of the steering system. When the steering system fails, it will affect driving safety and even cause accidents in serious cases.

[0004] Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a vehicle steering control mechanism that can limit the number of turns of the steering wheel, has a simple structure, a small size, occupies little space, and is conducive to arrangement in the vehicle's cab space.

[0006] An embodiment of the present application provides a vehicle steering control mechanism, including an axis assembly and a limit assembly, the axis assembly including a first axis body, a second axis body and an outer tube, the first axis body is used to connect to the steering wheel, the second axis body is coaxially connected to the first axis body and moves synchronously with the steering wheel, the second axis body is connected to the limit assembly, the limit assembly is used to limit the number of rotations of the steering wheel, the outer tube is coaxially connected to the first axis body and the second axis body, the second axis body is installed in the outer tube, and the limit assembly is at least partially installed in the outer tube.

[0007] In one embodiment, the first shaft body includes a cavity, and the second shaft body includes a connecting section and a transmission section. The connecting section is installed in the cavity, and the transmission section is connected to the first shaft body and the limiting assembly.

[0008] In one embodiment, the outer tube includes a accommodating cavity and a fixing groove. The accommodating cavity axially penetrates both ends of the outer tube. The fixing groove radially penetrates one side wall of the outer tube and is connected to the accommodating cavity. The limiting assembly is installed in the fixing groove and the accommodating cavity.

[0009] In one embodiment, the limiting assembly includes a first guide member and a second guide member, and the first guide member and the second guide member are installed in a fixed groove. The end of the first guide member close to the transmission section passes through the fixed groove and is located in the accommodating cavity, and cooperates with the transmission section. When the second shaft rotates axially, the first guide member moves axially relative to the second guide member.

[0010] In one embodiment, a first thread is provided at one end of the first guide member close to the transmission section, a second thread is provided on the radially outermost surface of the transmission section, and the first thread and the second thread are engaged for transmission.

[0011] In one embodiment, a first tooth member is protruding from one end of the first guide member close to the transmission section, and a second tooth member is provided on the radially outermost surface of the transmission section, and the first tooth member and the second tooth member are engaged in transmission.

[0012] In one embodiment, a groove is formed at one end of the first guide member close to the transmission section. The groove axially penetrates the first guide member and cooperates with the outermost surface of the transmission section in the radial direction.

[0013] In one embodiment, the first guide member is provided with a clamping member at both ends perpendicular to the axial direction, and a supporting platform that cooperates with the clamping member is provided in the fixed groove. When the first guide member is installed in the fixed groove, the clamping member contacts the supporting platform, and the clamping member is clamped between the supporting platform and the second guide member.

[0014] In one embodiment, limit blocks are protruded from both ends of the fixing groove along the axial direction, and the limit blocks are cooperated with the supporting platform. When the first guide member moves axially until it contacts the limit blocks, the steering wheel and the second shaft rotate to the extreme position.

[0015] In one embodiment, limiting grooves are provided at both ends of the fixing groove along the axial direction, the limiting grooves are connected to the fixing groove, and the width of the limiting grooves is smaller than the width of the fixing groove, and the limiting blocks are formed by the connection between the fixing groove and the limiting grooves.

[0016] In one embodiment, one of the first guide member and the second guide member includes a guide groove, and the other is protruded with a guide bar that cooperates with the guide groove. When the first guide member moves axially, the guide bar slides in the guide groove.

[0017] In one embodiment, the second guide member includes a pre-tightening member, which applies radial force to the first guide member to enable the first guide member to engage with the transmission section.

[0018] In one embodiment, the preload member includes a fastener, a first fastening hole is provided in the fixing groove, a second fastening hole is opened on the second guide member, the fastener is installed in the first fastening hole and the second fastening hole, and the fastener applies radial force to the second guide member and the first guide member.

[0019] In one embodiment, the preload member includes an elastic member, which is arranged between the fastener and the second guide member. The fastener passes through the elastic member to install the second guide member in the fixing groove. The fastener applies radial force to the second guide member and the first guide member, and the elastic member deforms and applies radial force to the second guide member and the first guide member.

[0020] In one embodiment, the pre-tightening member further includes a sealing cover, which is radially arranged on a side of the second guide member away from the first guide member, and the sealing cover seals the second guide member on the outer tube.

[0021] The beneficial effects of this application are:

[0022] The transmission between the limit assembly and the steering wheel is achieved through the first shaft and the second shaft; by at least partially installing the limit assembly in the outer tube, the volume of the entire control mechanism can be saved, the overall space occupied is small, and it is conducive to layout in the vehicle space. The limit assembly can limit the number of turns of the steering wheel, thereby improving the user experience of the entire control system.

[0023] BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0025] FIG1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0026] FIG2 is a partial exploded schematic diagram of a first shaft and a second shaft according to an embodiment of the present application;

[0027] FIG3 is an exploded schematic diagram of a position limiting assembly according to an embodiment of the present application;

[0028] FIG4 is a schematic structural diagram of an outer tube and its fixing groove according to an embodiment of the present application;

[0029] FIG5 is a cross-sectional view of the overall structure of an embodiment of the present application;

[0030] FIG6 is a cross-sectional view of the overall structure of an embodiment of the present application from another angle;

[0031] FIG7 is another exploded schematic diagram of a position limiting assembly according to an embodiment of the present application;

[0032] FIG8 is a cross-sectional view of the overall structure of another embodiment of the present application.

[0033] In the picture:

[0034] 10-shaft assembly; 11-first shaft body; 111-cavity; 1111-positioning slot; 12-second shaft body; 121-connecting section; 1211-positioning block; 122-transmission section; 13-outer tube; 131-accommodating chamber; 132-fixing slot; 1321-first fastening hole; 1322-supporting platform; 1323-limiting block; 133-limiting slot;

[0035] 20-limiting assembly; 21-first guide member; 211-cutting groove; 212-clamping member; 213-guide groove; 22-second guide member; 221-fastener; 222-second fastening hole; 223-elastic member; 224-guide bar; 225-cover; 2251-third fastening hole; 2252-boss.

[0036] Methods of implementing this application

[0037] Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present application, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the description of this application without inventive effort are intended to fall within the scope of protection of this application.

[0038] In the description of this application, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0039] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the products of the application are usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0040] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0041] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0042] The steering system usually includes a steering wheel and supporting components connected to the steering wheel. The driver directly operates the steering wheel to steer the vehicle, and the supporting components control the rotation of the steering wheel and provide support. With the development of technology, steer-by-wire technology has been added to the steering system. Steer-by-wire technology uses microelectronics technology to connect and control the various components of the steering system, replacing traditional mechanical connections. Sensors are used to record steering data. By frequently sending and receiving signals and comparing data, the vehicle's microcontroller unit issues control instructions to control the vehicle to steer. It has high sensitivity and improves the vehicle's steering performance.

[0043] Since the wire-controlled steering system eliminates the mechanical connection between the steering wheel and its supporting components, the steering wheel can rotate without limit, which affects driving safety. Therefore, the number of turns of the steering wheel needs to be limited. However, the chassis space at the vehicle cab is limited. If the structural size of the steering wheel is restricted to a large size, it will be difficult to install, which will bring great limitations to the vehicle design.

[0044] In view of the above problems, an embodiment of the present application provides a vehicle steering control mechanism.

[0045] In conjunction with Figures 1 and 2, the vehicle steering control mechanism proposed in the embodiment of the present application includes a shaft assembly 10 and a limit assembly 20. The shaft assembly 10 includes a first shaft body 11, a second shaft body 12 and an outer tube 13. The first shaft body 11 is used to connect to the steering wheel, and the second shaft body 12 is coaxially connected to the first shaft body 11. The first shaft body 11 and the second shaft body 12 move synchronously with the steering wheel. That is, when the user applies external force to the steering wheel to rotate the steering wheel around the axis, the first shaft body 11 and the second shaft body 12 rotate around the axis along with the steering wheel. The second shaft body 12 is used to connect to the limit assembly 20, and the number of rotations of the steering wheel is controlled by the limit assembly 20. The outer tube 13 is coaxially connected to the first shaft body 11 and the second shaft body 12. The second shaft body 12 is installed in the outer tube 13, and the limit assembly 20 is at least partially installed in the outer tube 13. With this arrangement, the overall volume is small, the space occupied is small, and it is conducive to layout in the vehicle space.

[0046] It can be understood that the vehicle steering control mechanism proposed in the embodiment of the present application is applied to the steering system of the vehicle.

[0047] As shown in Figure 2, the first shaft body 11 includes a cavity 111, and the second shaft body 12 includes a connecting section 121 and a transmission section 122. The connecting section 121 is accommodated in the cavity 111. The connection between the first shaft body 11 and the second shaft body 12 is achieved through the cooperation between the connecting section 121 and the cavity 111, so that the first shaft body 11 and the second shaft body 12 can rotate synchronously around the axial direction, with a firm connection and good synchronization. The transmission section 122 is exposed in the cavity 111, and the transmission section 122 connects the first shaft body 11 and the limiting assembly 20 to realize transmission between the first shaft body 11 and the limiting assembly 20.

[0048] In an example of this embodiment, as shown in Figure 2, a positioning block 1211 is protruded from the outermost surface of the connecting section 121 along the radial direction, and a positioning groove 1111 that cooperates with the positioning block 1211 is provided in the cavity 111. When the connecting section 121 is installed in the cavity 111, the positioning block 1211 is clamped in the positioning groove 1111. Through the cooperation between the positioning block 1211 and the positioning groove 1111, the connection between the first shaft body 11 and the second shaft body 12 is realized, and the first shaft body 11 and the second shaft body 12 can rotate synchronously around the axial direction. The structure is simple and the connection is convenient and quick.

[0049] In another example of this embodiment, a positioning groove 1111 is provided on the radially outermost surface of the connecting section 121, and a positioning block 1211 that cooperates with the positioning groove 1111 is convexly provided in the cavity 111. When the connecting section 121 is installed in the cavity 111, the positioning block 1211 is clamped in the positioning groove 1111. Through the cooperation between the positioning block 1211 and the positioning groove 1111, the connection between the first shaft body 11 and the second shaft body 12 is realized, and the first shaft body 11 and the second shaft body 12 can rotate synchronously around the axial direction. The structure is simple and the connection is convenient and quick.

[0050] Exemplarily, the number of the positioning blocks 1211 is set to at least one, and the number of the positioning slots 1111 is equal to or greater than the number of the positioning blocks 1211 .

[0051] For example, as shown in FIG. 2 , the positioning blocks 1211 are protruded from the connecting section 121 , and are circumferentially distributed and protruded from the radially outermost surface of the connecting section 121 . This arrangement ensures a firm and reliable connection and facilitates installation.

[0052] Exemplarily, the positioning blocks 1211 are protruded from the cavity 111 and are protruded from the inner wall of the cavity 111 in a circumferential distribution.

[0053] Illustratively, the positioning block 1211 is interference-fitted with the positioning groove 1111 to achieve a fixed connection between the connecting section 121 and the cavity 111 .

[0054] In another example of this embodiment, the connecting section 121 and the cavity 111 are directly connected through interference fit.

[0055] In conjunction with Figures 1, 4 and 5, the outer tube 13 includes a accommodating cavity 131, which axially penetrates both ends of the outer tube 13 and is coaxially arranged with the outer tube 13. The accommodating cavity 131 is used to accommodate a portion of the first shaft body 11, the second shaft body 12 and a portion of the limit assembly 20. A fixing groove 132 is provided on the outer tube 13, which radially penetrates a side wall of the outer tube 13 and is connected to the accommodating cavity 131. The limit assembly 20 is installed in the fixing groove 132 and the accommodating cavity 131. By setting the fixing groove 132, the installation space of the limit assembly 20 can be increased. While ensuring the function of the limit assembly 20, the overall volume is reduced without additionally increasing the volume and space occupancy of the shaft assembly 10, which is beneficial to the arrangement of the entire steering control mechanism in the vehicle.

[0056] In conjunction with Figures 3 and 5, the limiting assembly 20 includes a first guide member 21 and a second guide member 22 distributed radially. The first guide member 21 is arranged between the transmission section 122 and the second guide member 22. The first guide member 21 is installed in the fixed groove 132, and its end close to the transmission section 122 passes through the fixed groove 132 and is located in the accommodating cavity 131. The first guide member 21 cooperates with the transmission section 122. When the second shaft body 12 rotates axially, the first guide member 21 moves axially relative to the second guide member 22.

[0057] In one example, in combination with Figures 2, 3 and 5, the first guide member 21 is provided with a first thread at one end close to the transmission section 122, and the transmission section 122 is provided with a second thread on the outermost surface along the radial direction. The first guide member 21 and the transmission section 122 realize transmission through the threaded engagement of the first thread and the second thread. When the second shaft body 12 rotates axially, the transmission section 122 can drive the first guide member 21 and cooperate with the second guide member 22 to make the first guide member 21 move axially.

[0058] For example, as shown in FIG3 , a groove 211 is provided at one end of the first guide member 21 close to the transmission section 122. The groove 211 passes through the first guide member 21 axially, and the shape of the groove 211 is matched with the shape of the radially outermost surface of the transmission section 122, so that the first guide member 21 fits tightly with the transmission section 122 without interfering with the rotational movement of the transmission section 122, thereby ensuring smooth rotation of the second shaft 12.

[0059] Exemplarily, the cutting groove 211 is configured as a C-shaped groove, that is, the orthographic projection of the cutting groove 211 in the axial direction is C-shaped.

[0060] In another example, as shown in FIG8 , a first tooth is protruding from one end of the first guide member 21 close to the transmission section 122, and a second tooth is provided on the radially outermost surface of the transmission section 122. The first guide member 21 and the transmission section 122 are transmitted through the engagement of the first tooth and the second tooth. When the second shaft 12 rotates axially, the transmission section 122 can drive the first guide member 21 and cooperate with the second guide member 22 to make the first guide member 21 move axially.

[0061] In an example of this embodiment, in combination with Figures 3 and 4, the first guide member 21 is provided with a clamping member 212 at both ends orthogonal to the axial direction, and a supporting platform 1322 that cooperates with the clamping member 212 is provided in the fixing groove 132. When the first guide member 21 is installed in the fixing groove 132, the clamping member 212 is located on the supporting platform 1322, and the first guide member 21 is clamped between the supporting platform 1322 and the second guide member 22. Through the cooperation of the supporting platform 1322 and the clamping member 212, the stability of the first guide member 21 in the axial movement can be guaranteed.

[0062] In combination with Figures 4, 5 and 6, limit blocks 1323 are provided at both ends of the fixed groove 132 in the axial direction. The limit blocks 1323 are cooperated with the supporting platform 1322 to limit the axial position of the first guide member 21. When the first guide member 21 moves axially through the transmission section 122, the axial end face of the clamping member 212 will contact the limit blocks 1323, and the limit blocks 1323 limit the axial stroke of the first guide member 21.

[0063] When the user applies external force to the steering wheel, driving the second shaft 12 to rotate axially, the transmission is transmitted to the first guide member 21 through the transmission section 122, so that the first guide member 21 moves axially. When the clamping member 212 contacts the limit block 1323, the steering wheel rotates to the extreme position, that is, the steering wheel can no longer continue to rotate in the same direction. If the steering wheel is rotated counterclockwise until the clamping member 212 contacts the limit block 1323, it cannot continue to rotate counterclockwise, but can be rotated clockwise. When it is rotated clockwise until the clamping member 212 contacts the limit block 1323, it cannot continue to rotate clockwise, and the number of circles is limited.

[0064] Exemplarily, the limiting block 1323 and the fixing slot 132 are integrally formed.

[0065] For example, the first guide member 21 is made of nylon, which can reduce the noise caused by the contact and collision between the first guide member 21 and the limit block 1323, improve the user experience, and improve the NVH (Noise, Vibration, Harshness) performance of the entire transmission control mechanism.

[0066] For example, in combination with Figures 4 and 5, the fixing groove 132 is provided with a limiting groove 133 at both ends along the axial direction, the limiting groove 133 is connected to the fixing groove 132, and the dimensions of the limiting groove 133 at both ends orthogonal to the axial direction (i.e., the width dimension) are smaller than the width dimension of the fixing groove 132. The connection between the fixing groove 132 and the limiting groove 133 forms a step. When the clamp 212 moves to the step, it cannot continue to move, and the limiting block 1323 is formed by the step.

[0067] Exemplarily, the limiting groove 133 is set as a circular groove, the fixing groove 132 is set as a square groove (or rectangular groove), and the second guide member 22 is set in the same shape as the fixing groove 132 and the limiting groove 133. With such a setting, the second guide member 22 can be installed in place at one time, reducing the time cost of repeatedly adjusting the position and improving the installation efficiency.

[0068] In an example of this embodiment, in combination with Figures 3 and 7, a guide groove 213 is provided at one end of the first guide member 21 close to the second guide member 22, and a guide bar 224 is protruding from one end of the second guide member 22 close to the first guide member 21. The guide bar 224 is slidably arranged in the guide groove 213. When the first guide member 21 moves axially, the guide bar 224 slides axially in the guide groove 213. Such an arrangement can ensure the stability of the axial movement of the first guide member 21.

[0069] In another example of this embodiment, a guide bar 224 is provided at one end of the first guide member 21 close to the second guide member 22, and a guide groove 213 is provided at one end of the second guide member 22 close to the first guide member 21. The guide bar 224 is slidably arranged in the guide groove 213. When the first guide member 21 moves axially, the guide bar 224 slides axially in the guide groove 213. Such an arrangement can ensure the stability of the axial movement of the first guide member 21.

[0070] Exemplarily, the guide groove 213 is configured as a V-shaped groove, and the guide bar 224 is configured as a V-shaped bar. Of course, they can also be configured as other shapes.

[0071] The second guide member 22 is installed in the fixing groove 132. The second guide member 22 includes a pre-tightening member, which is used to apply radial force to the first guide member 21, so that the first guide member 21 tends to move radially close to the transmission section 122 to ensure that the first thread and the second thread can be tightly transmitted, eliminate the meshing gap between the first thread and the second thread, and ensure that the first guide member 21 and the transmission section 122 will not loosen and cause transmission failure.

[0072] In an example of this embodiment, in combination with Figures 3 and 4, the pretightening member includes a fastener 221, a first fastening hole 1321 is provided in the fixing groove 132, and a second fastening hole 222 is provided on the second guide member 22 to cooperate with the first fastening hole 1321. The fastener 221 is installed in the first fastening hole 1321 and the second fastening hole 222 to install the second guide member 22 in the fixing groove 132, and the second guide member 22 is pressed by the fastener 221, and a radial force close to the transmission section 122 is applied to the second guide member 22, thereby providing a pretightening force for the first guide member 21 and improving the meshing effect of the first guide member 21 and the transmission section 122.

[0073] It can be understood that, in one example, when limiting grooves 133 are provided at both ends of the fixing groove 132 , as shown in FIG. 4 , the first fastening hole 1321 can be opened in the limiting groove 133 .

[0074] Exemplarily, the first fastening hole 1321 and the second fastening hole 222 are configured as screw holes, and the fastener 221 is configured as a bolt.

[0075] Exemplarily, the fastener 221 is configured as a rivet, which provides a pre-tightening force to the first guide member 21 by riveting.

[0076] In an example of this embodiment, in combination with Figures 3 and 4, the preloaded member also includes an elastic member 223, which is arranged between the fastener 221 and the second guide member 22. The fastener 221 passes through the elastic member 223 to install the second guide member 22 in the fixing groove 132. After the fastener 221 is tightened, a radial force is applied to the elastic member 223 to deform the elastic member 223. The elastic member 223 generates a radial and continuous restoring force and acts on the second guide member 22 and the first guide member 21, which can ensure normal, stable and continuous transmission between the first guide member 21 and the transmission section 122. In particular, in threaded transmission, long-term meshing transmission will cause thread wear and affect the transmission efficiency. Through the setting of the elastic member 223, it can continuously provide restoring force, greatly ensure the transmission efficiency, and improve the NVH performance of the entire transmission control mechanism.

[0077] Exemplarily, the elastic member 223 is configured as a disc spring.

[0078] In an example of this embodiment, in combination with Figures 1, 3 and 4, the preload member also includes a cover 225, which is radially arranged on the side of the second guide member 22 away from the first guide member 21. The cover 225 is used to encapsulate the second guide member 22 in the fixing groove 132 and the limiting groove 133. The cover 225 is used to increase the preload force applied by the second guide member 22 to the first guide member 21, and can cover up the traces of the fixing groove 132 and the limiting groove 133 opened on the outer tube 13, thereby ensuring the integrity of the overall structure of the outer tube 13, improving the overall aesthetics, and preventing dust from entering the fixing groove 132 and the limiting groove 133 to affect use.

[0079] Illustratively, a third fastening hole 2251 cooperating with the fastener 221 is provided on the cover 225 , and the cover 225 , the elastic member 223 , and the second guide member 22 are installed and fixed by the fastener 221 .

[0080] Exemplarily, the third fastening hole 2251 is configured as a screw hole.

[0081] As shown in Figure 7, a boss 2252 is provided at one end of the cover 225 close to the second guide member 22. The boss 2252 is arranged in coordination with the position of the elastic member 223. The elastic member 223 is arranged between the cover 225 and the second guide member 22. The boss 2252 can provide a radial clamping force to the elastic member 223 to ensure that the deformation of the elastic member 223 is stable.

[0082] It can be understood that by adjusting the axial size of the first guide member 21, and / or adjusting the axial size of the fixing groove 132, and / or adjusting the axial size of the second guide member 22, the number of turns of the steering wheel can be changed to suit different turn requirements.

[0083] In an example of this embodiment, the second guide member 22 can be welded into the fixing groove 132 and the limiting groove 133 .

[0084] To sum up, the transmission between the limit assembly 20 and the steering wheel is realized through the first shaft 11 and the second shaft 12; by at least partially installing the limit assembly 20 in the outer tube 13, the volume of the entire control mechanism can be saved, so that the overall floor space is small, which is conducive to layout in the vehicle space. The limit assembly 20 can limit the number of turns of the steering wheel, thereby improving the user experience of the entire control system.

[0085] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the appended claims.

Claims

1. A vehicle steering control mechanism, comprising a shaft assembly (10) and a limit assembly (20), wherein the shaft assembly (10) comprises a first shaft body (11), a second shaft body (12) and an outer tube (13), wherein the first shaft body (11) is used to be connected to a steering wheel, the second shaft body (12) is coaxially connected to the first shaft body (11) and moves synchronously with the steering wheel, the second shaft body (12) is connected to the limit assembly (20), the limit assembly (20) is used to limit the number of rotations of the steering wheel, the outer tube (13) is coaxially connected to the first shaft body (11) and the second shaft body (12), the second shaft body (12) is installed in the outer tube (13), and the limit assembly (20) is at least partially installed in the outer tube (13).

2. The vehicle steering control mechanism according to claim 1, wherein: The first shaft body (11) comprises a cavity (111), and the second shaft body (12) comprises a connecting section (121) and a transmission section (122), wherein the connecting section (121) is installed in the cavity (111), and the transmission section (122) connects the first shaft body (11) and the limiting assembly (20).

3. The vehicle steering control mechanism according to claim 2, wherein: The outer tube (13) comprises a containing cavity (131) and a fixing groove (132); the containing cavity (131) axially penetrates both ends of the outer tube (13); the fixing groove (132) radially penetrates a tube wall of one side of the outer tube (13) and is communicated with the containing cavity (131); the limiting assembly (20) is installed in the fixing groove (132) and the containing cavity (131).

4. The vehicle steering control mechanism according to claim 3, wherein: The limiting assembly (20) comprises a first guide member (21) and a second guide member (22), wherein the first guide member (21) and the second guide member (22) are installed in the fixing groove (132), and one end of the first guide member (21) close to the transmission section (122) passes through the fixing groove (132) and is located in the accommodating cavity (131), and cooperates with the transmission section (122), and when the second shaft (12) rotates axially, the first guide member (21) moves axially relative to the second guide member (22).

5. The vehicle steering control mechanism according to claim 4, wherein: The first guide member (21) is provided with a first thread at one end close to the transmission section (122), and the transmission section (122) is provided with a second thread on its outermost surface in the radial direction, and the first thread and the second thread are meshed for transmission.

6. The vehicle steering control mechanism according to claim 4, wherein: A first toothed member is protruding from one end of the first guide member (21) close to the transmission section (122), and a second toothed member is provided on the outermost surface of the transmission section (122) in the radial direction, and the first toothed member and the second toothed member are meshed for transmission.

7. The vehicle steering control mechanism according to claim 4 or 5, wherein: A groove (211) is provided at one end of the first guide member (21) close to the transmission section (122), the groove (211) axially penetrates the first guide member (21), and the groove (211) is arranged in cooperation with the outermost surface of the transmission section (122) in the radial direction.

8. The vehicle steering control mechanism according to any one of claims 4 to 7, wherein: The first guide member (21) is provided with a clamping member (212) at both ends orthogonal to the axial direction, and a supporting platform (1322) cooperating with the clamping member (212) is provided in the fixing groove (132). When the first guide member (21) is installed in the fixing groove (132), the clamping member (212) contacts the supporting platform (1322), and the clamping member (212) is clamped between the supporting platform (1322) and the second guide member (22).

9. The vehicle steering control mechanism according to claim 8, wherein: The fixing groove (132) is provided with limit blocks (1323) at both ends along the axial direction. The limit blocks (1323) are arranged in cooperation with the supporting platform (1322). When the first guide member (21) moves along the axial direction until it contacts the limit blocks (1323), the steering wheel and the second shaft (12) rotate to the extreme position.

10. The vehicle steering control mechanism according to claim 9, wherein: The fixing groove (132) is provided with limiting grooves (133) at both ends along the axial direction, the limiting groove (133) is connected with the fixing groove (132), and the width dimension of the limiting groove (133) is smaller than the width dimension of the fixing groove (132), and the limiting block (1323) is formed by the connection between the fixing groove (132) and the limiting groove (133).

11. The vehicle steering control mechanism according to any one of claims 4 to 10, wherein: One of the first guide member (21) and the second guide member (22) comprises a guide groove (213), and the other is provided with a guide bar (224) cooperating with the guide groove (213); when the first guide member (21) moves axially, the guide bar (224) is slidably arranged in the guide groove (213).

12. The vehicle steering control mechanism according to any one of claims 4 to 10, wherein: The second guide member (22) comprises a pre-tightening member, which applies a radial force to the first guide member (21) so that the first guide member (21) engages with the transmission section (122).

13. The vehicle steering control mechanism according to claim 12, wherein: The pre-tightening member comprises a fastener (221), a first fastening hole (1321) is provided in the fixing groove (132), a second fastening hole (222) is provided on the second guide member (22), the fastener (221) is installed in the first fastening hole (1321) and the second fastening hole (222), and the fastener (221) applies radial force to the second guide member (22) and the first guide member (21).

14. The vehicle steering control mechanism according to claim 13, wherein: The preload member comprises an elastic member (223), wherein the elastic member (223) is arranged between the fastener (221) and the second guide member (22), the fastener (221) passes through the elastic member (223) to install the second guide member (22) in the fixing groove (132), the fastener (221) applies a radial force to the second guide member (22) and the first guide member (21), and the elastic member (223) is deformed and applies a radial force to the second guide member (22) and the first guide member (21).

15. The vehicle steering control mechanism according to claim 13 or 14, wherein: The preload member further comprises a sealing cover (225), wherein the sealing cover (225) is radially arranged on a side of the second guide member (22) away from the first guide member (21), and the sealing cover (225) seals the second guide member (22) on the outer tube (13).

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