Rotation angle limiting device for vehicle steering wheel, vehicle steering system and vehicle

Abstract

The utility model relates to a rotation angle limiting device for a vehicle steering wheel, a vehicle steering system and a vehicle. The rotation angle limiting device for the vehicle steering wheel specifically comprises a mounting body, a driving assembly and a driven assembly. The driving assembly is used for being connected with a steering wheel and can synchronously rotate with the steering wheel. The driven assembly is arranged on the mounting main body, a conveying piece is wound on the driving assembly and the driven assembly, and the conveying piece can be driven by the driving assembly to rotate and drives the driven assembly to rotate; an angle limiting structure is arranged between the driving assembly and the driven assembly and used for limiting the rotation angle of the driving assembly so that the steering wheel can rotate between the left rotation limiting position and the right rotation limiting position, and therefore the steering wheel can only rotate within the preset angle range. Therefore, the situation that a combination switch, a clock spring, a safety air bag coil and other devices arranged on the hand feeling simulator and the like are damaged due to random rotation of the steering wheel is avoided to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a rotation angle limiting device for a vehicle steering wheel, a vehicle steering system and a vehicle. Background Art

[0002] With the development of vehicle autonomous driving and multimedia functions, the wire-controlled steering system has emerged. Among them, the wire-controlled steering system eliminates the traditional mechanical connection between the steering wheel and the steering wheel. It can detect the driver's steering data with sensors, convert the driver's steering intention into a digital signal and transmit it, and finally realize the rotation of the steering wheel.

[0003] Among them, since the wire-controlled steering system cancels the traditional mechanical connection between the steering wheel and the steering wheel, a hand-feel simulator is required to simulate the steering feel. Among them, the hand-feel simulator may include an electronic controller and a hand-feel simulation motor electrically connected to the electronic controller, a steering shaft is connected to the steering wheel, a steering column is provided on the outer rotating sleeve of the steering shaft, the hand-feel simulation motor is arranged on the steering column, and the hand-feel simulation motor is connected to the steering shaft, and the hand-feel simulation motor can output corresponding torque according to the instruction of the electronic controller, and the torque is then transmitted to the steering shaft, so that the road impact torque simulated by the hand-feel motor is transmitted to the steering wheel to realize hand-feel simulation and provide the driver with road feel.

[0004] However, since the steer-by-wire system eliminates the mechanical connection of the intermediate shaft in the traditional steering system, the steering wheel turns too freely, making the combination switch, clock spring, airbag coil and other components connected to the feel simulation vulnerable to damage. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a rotation angle limiting device for a vehicle steering wheel, a vehicle steering system and a vehicle.

[0006] In a first aspect, the present application provides a rotation angle limiting device for a vehicle steering wheel, comprising a mounting body, an active component, and a driven component;

[0007] The active component is used to connect with the steering wheel and can rotate synchronously with the steering wheel; the driven component is arranged on the mounting body, and a transmission member is arranged around the active component and the driven component, and the transmission member can rotate under the drive of the active component and drive the driven component to rotate;

[0008] An angle limiting structure is provided between the active component and the driven component, and the angle limiting structure is used to limit the rotation angle of the active component so that the steering wheel can rotate between a left rotation limit position and a right rotation limit position.

[0009] Optionally, the angle limiting structure includes two stoppers;

[0010] One of the stoppers is connected to the active component, and the other of the stoppers is connected to the driven component;

[0011] When the steering wheel is rotated to the left rotation limit position or the right rotation limit position, one of the stop parts may abut against the other stop part to prevent the steering wheel from continuing to rotate in the same direction.

[0012] Optionally, the active component includes a first connecting member and a first transmission member, and the driven component includes a second connecting member and a second transmission member;

[0013] The first connecting member is used to connect with the steering wheel, and the first transmission member is connected to a side of the first connecting member away from the steering wheel; the transmission member is arranged between the first transmission member and the second transmission member;

[0014] One of the stop parts is arranged on the first connecting member, and the other of the stop parts is arranged on the second connecting member.

[0015] Optionally, on a tangent line along a connection point between the active component and the stopper, each of the stoppers has a first side and a second side that are opposite to each other;

[0016] The first side and the second side of each of the stop parts are provided with a snap-fitting cavity, and one side of the snap-fitting cavity has an opening; in each of the stop parts, the openings of the snap-fitting cavity located on the first side and the snap-fitting cavity located on the second side are oriented in opposite directions to form a snap-fitting protrusion at the other end of each of the stop parts, and the snap-fitting protrusion on one of the stop parts can be snapped into the snap-fitting cavity of another of the stop parts.

[0017] Optionally, the engaging protrusion is an arc-shaped protrusion, the extending direction of the arc-shaped protrusion of one of the stop parts is consistent with the rotation direction of the active component, and the extending direction of the arc-shaped protrusion of the other stop part is consistent with the rotation direction of the driven component;

[0018] The shape of the clamping protrusion is matched with the shape of the clamping cavity.

[0019] Optionally, when the steering wheel is returned to the center, one of the stop parts and the other of the stop parts are located on the same straight line and are arranged opposite to each other; wherein the straight line is a line connecting the center of the active component and the center of the driven component;

[0020] And / or, the first connecting member and the second connecting member have a preset distance, and the preset distance matches the size of the stop portion along the radial direction of the first connecting member;

[0021] And / or, the diameter of the first transmission member is smaller than the diameter of the second transmission member.

[0022] Optionally, one of the stoppers and the first connecting member are integrally formed;

[0023] And / or, the other stopper and the second connecting member are integrally formed;

[0024] And / or, the conveying member is a conveyor belt, and anti-slip structures are respectively provided between the conveying member and the first transmission member, and between the conveying member and the second transmission member;

[0025] And / or, a flexible member is further provided on the periphery of the stop portion.

[0026] Optionally, the installation body includes a cover body and a hollow installation shell;

[0027] The installation shell has an opening on a side facing away from the steering wheel, and the cover body is arranged at the opening and encloses the installation shell together to form an installation cavity;

[0028] The active component, the driven component and the transmission member are all located in the installation cavity, and a first avoidance hole for connecting the active component with the steering wheel is arranged on the cavity wall of the installation cavity.

[0029] Optionally, the cover body includes a cover body and an annular protrusion arranged on a side of the cover body facing the mounting shell;

[0030] The annular protrusion can extend into the installation shell when the cover body is placed on the opening, and seal with the inner cavity wall of the installation shell.

[0031] In a second aspect, the present application provides a vehicle steering system, comprising the rotation angle limiting device for a vehicle steering wheel as described above.

[0032] Optionally, the vehicle steering system further includes a hand feel simulator and a deceleration structure;

[0033] The deceleration structure is transmission-connected between the hand-feel simulator and the steering wheel;

[0034] A reducer housing is also provided on the outer side of the deceleration structure, and the reducer housing is used to be arranged between the steering wheel and the angle limiting structure, and the reducer housing is provided with a second avoidance hole for connecting the steering wheel with the deceleration structure and the active component, and a third avoidance hole for connecting the hand feeling simulator with the deceleration structure;

[0035] The mounting body is detachably connected to a side of the reducer housing that is away from the steering wheel.

[0036] In a third aspect, the present application provides a vehicle, comprising the vehicle steering system as described above.

[0037] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0038] The present application provides a rotation angle limit device for a vehicle steering wheel, a vehicle steering system and a vehicle. By setting a mounting body, an active component and a driven component, the active component is connected to the steering wheel and can rotate synchronously with the steering wheel; the driven component is set on the mounting body, and a transmission member is wound around the active component and the driven component. The transmission member can rotate under the drive of the active component and drive the driven component to rotate; at the same time, by setting an angle limit structure between the active component and the driven component, the angle limit structure is used to limit the rotation angle of the active component, so that the steering wheel can rotate between the left rotation limit position and the right rotation limit position. With this arrangement, when the steering wheel is rotated, the active component can rotate synchronously with the steering wheel. At this time, the transmission member rotates and drives the driven component to rotate. Due to the setting of the angle limiting structure between the active component and the driven component, the rotation angle of the active component is limited to a certain extent, that is, the steering wheel can only rotate within a preset angle range. This can prevent the steering wheel from rotating arbitrarily and damaging components such as combination switches, clock springs, airbag coils, etc. provided on the feel simulator, etc., especially for a vehicle steering system including a feel simulator. It can also prevent the steering wheel from rotating at an excessive angle and disrupting the angle signal of the feel simulator, resulting in difficulty in controlling the feel simulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 A partial structural schematic diagram of a vehicle steering system according to an embodiment of the present application;

[0042] Figure 2 This is a schematic diagram of the structure of the rotation angle limiting device described in an embodiment of the present application;

[0043] Figure 3 The structure of the active component described in the embodiment of the present application is shown in FIG. Figure 1 ;

[0044] Figure 4 The structure of the active component described in the embodiment of the present application is shown in FIG. Figure 2 ;

[0045] Figure 5 This is a schematic diagram of the structure of the driven component described in an embodiment of the present application;

[0046] Figure 6 This is a schematic diagram of the structure of the installation housing described in the embodiment of the present application;

[0047] Figure 7 This is a schematic diagram of the structure of the cover body described in the embodiment of the present application;

[0048] Figure 8 This is a schematic diagram of the positions of the active component and the driven component when the steering wheel is returned to the center position in the embodiment of the present application;

[0049] Fig. 9 This is a schematic diagram of the positions of the active component and the driven component on the side away from the steering wheel when the steering wheel is rotated to the right rotation limit position in the embodiment of the present application;

[0050] Fig.10 This is a schematic diagram of the positions of the active component and the driven component on the side away from the steering wheel when the steering wheel is rotated to the left rotation limit position in an embodiment of the present application.

[0051] Among them, 100, rotation angle limiting device; 1, installation body; 11, cover body; 111, cover body; 112, annular protrusion; 12, installation shell; 121, extension piece; 13, installation cavity; 131, first avoidance hole; 14, support piece; 15, connecting shaft; 2, active component; 21, first connecting piece; 211, spline; 22, first transmission piece; 3, driven component; 31, second connecting piece; 32, second transmission piece; 4, transmission piece; 5, angle limiting structure; 51, stopper; 511, snap-on cavity; 512, snap-on protrusion; 200, feel simulator; 201, feel motor; 202, electronic controller; 300, reduction structure; 301, reducer shell; 400, steering shaft; 500, steering column. DETAILED DESCRIPTION

[0052] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0054] Reference Figures 1 to 10 As shown, this embodiment provides a rotation angle limiting device for a vehicle steering wheel (hereinafter referred to as a rotation angle limiting device 100), wherein the rotation angle limiting device 100 is specifically used in a vehicle steering system, and the vehicle steering system may also include a steering wheel. The steering wheel is connected to the steering wheel and can rotate synchronously to achieve the steering of the vehicle.

[0055] The rotation angle limiting device 100 for a vehicle steering wheel specifically includes a mounting body 1 , an active component 2 and a driven component 3 .

[0056] The active component 2 is used to connect with the steering wheel and can rotate synchronously with the steering wheel. The driven component 3 is arranged on the mounting body 1, and a transmission member 4 is arranged around the active component 2 and the driven component 3. The transmission member 4 can rotate under the drive of the active component 2 and drive the driven component 3 to rotate.

[0057] Exemplarily, the steering wheel is connected to the active component 2 through the steering shaft 400. For example, a column output shaft can also be connected between the steering shaft 400 and the active component 2, so that the steering wheel, the steering shaft 400, the column output shaft and the active component 2 can rotate synchronously.

[0058] Among them, refer to Figure 4 As shown, for example, a spline 211 can be provided on the side of the active component 2 facing the pipe column output shaft, and a matching protrusion that can match with the keyway of the spline 211 can be provided on the pipe column output shaft, the pipe column output shaft extends into the spline 211, and the matching protrusion matches with the keyway of the spline 211 to achieve the connection between the two. Of course, the active component 2 can also be connected to the pipe column output shaft by means of snap connection, interference fit, bonding, etc.

[0059] Specifically, the vehicle steering system may further include a steering column 500 , and the steering shaft 400 may be supported in the steering column 500 via a bearing, so that the steering shaft 400 may rotate relative to the steering column.

[0060] In a specific implementation, the vehicle steering system may further include a hand feel simulator 200. The setting of the hand feel simulator 200 cancels the mechanical connection between the rotating shaft and the steering gear on the steering wheel, thereby realizing wire-controlled steering. The hand feel simulator 200 may transmit the road impact torque simulated by the hand feel simulator 200 to the steering wheel when the vehicle is in a hand feel simulation state, thereby realizing hand feel simulation and providing the driver with a road feel.

[0061] Exemplarily, the hand feeling simulator 200 may include a hand feeling motor 201, an electronic controller 202 (Engine control unit, referred to as ECU) and a torque sensor disposed on the steering shaft 400. The electronic controller 202 is electrically connected to the hand feeling motor 201, and the output shaft of the hand feeling motor 201 is connected to the steering shaft 400. In specific implementation, when the electronic controller 202 receives a hand feeling simulation request instruction from the vehicle, the electronic controller 202 controls the hand feeling motor 201 to output the requested torque, and the torque sensor measures the torque transmitted to the steering shaft 400 and transmits the torque to the electronic controller 202.

[0062] In specific implementation, a deceleration structure 300 can also be set between the feel motor 201 of the feel simulator 200 and the steering wheel (specifically the steering shaft 400 on the steering wheel) to decelerate and increase the torque output by the feel motor 201 through the deceleration structure 300 and then apply it to the steering shaft 400.

[0063] Specifically, an angle limiting structure 5 is provided between the active component 2 and the driven component 3, and the angle limiting structure 5 is used to limit the rotation angle of the active component 2 so that the steering wheel can rotate between a left rotation limit position and a right rotation limit position.

[0064] The active component 2 and the driven component 3 can be produced by powder metallurgy or the like, are easy to process, and can achieve high working strength.

[0065] The rotation angle limiting device for a vehicle steering wheel provided in this embodiment is characterized in that a mounting body 1, an active component 2 and a driven component 3 are provided, the active component 2 is connected to the steering wheel and can rotate synchronously with the steering wheel; the driven component 3 is provided on the mounting body 1, and a transmission member 4 is wound around the active component 2 and the driven component 3, the transmission member 4 can rotate under the drive of the active component 2, and drive the driven component 3 to rotate; at the same time, an angle limiting structure 5 is provided between the active component 2 and the driven component 3, so that the angle limiting structure 5 is used to limit the rotation angle of the active component 2, so that the steering wheel can rotate between a left rotation limit position and a right rotation limit position. With such an arrangement, when the steering wheel rotates, the active component 2 can rotate synchronously with the steering wheel. At this time, the transmission member 4 rotates and drives the driven component 3 to rotate. Due to the arrangement of the angle limiting structure 5 between the active component 2 and the driven component 3, the rotation angle of the active component 2 is limited to a certain extent, that is, the steering wheel can only rotate within a preset angle range. This can prevent the steering wheel from rotating arbitrarily and damaging components such as the combination switch, clock spring, airbag coil, etc. arranged on the feel simulator 200, etc., especially for the vehicle steering system (i.e., linear steering system) including the feel simulator 200. In addition, it can also prevent the steering wheel from rotating beyond an angle and disrupting the angle signal of the feel simulator 200, resulting in difficulty in controlling the feel simulator 200.

[0066] In some embodiments, reference Figure 1 As shown, the outer side of the above-mentioned deceleration structure 300 is also covered with a reducer housing 301, which is used to be arranged between the steering wheel and the angle limiting structure 5, and the reducer housing 301 is provided with a second avoidance hole for connecting the steering wheel with the deceleration structure 300 and the active component 2, and a third avoidance hole for connecting the hand feel simulator 200 with the deceleration structure 300. The mounting body 1 is detachably connected to the side of the reducer housing 301 away from the steering wheel.

[0067] With such arrangement, the reduction gear structure 300 can be protected to a certain extent by the reducer housing 301, thereby ensuring the normal use of the reduction gear structure 300, and by detachably connecting the installation body 1 to the side of the reducer housing 301 away from the steering wheel, the vehicle steering wheel rotation angle limit device 100 is easy to install and remove, and when one of the installation body 1 and the reducer housing 301 is damaged, only the damaged component needs to be replaced, thereby avoiding the scrapping of the installation body 1 and the reducer housing 301 as a whole to a certain extent, saving maintenance costs.

[0068] Exemplarily, the mounting housing 12 can be detachably connected to the reducer housing 301 by means of bolts, buckles, etc. The end of the steering column 500 that faces away from the steering wheel can be connected to the reducer housing 301 by means of bolts, etc.

[0069] In some embodiments, reference Figures 2 to 10 As shown, the angle limiting structure 5 includes two stoppers 51. One of the stoppers 51 is connected to the active component 2, and the other of the stoppers 51 is connected to the driven component 3. When the steering wheel is rotated to the left rotation limit position or the right rotation limit position, one of the stoppers 51 can abut against the other of the stoppers 51 to prevent the steering wheel from continuing to rotate in the same direction.

[0070] With this arrangement, the rotation angle range of the steering wheel can be limited through the abutment between the two stoppers 51, so that the steering wheel can be rotated within a preset range. The structure is simple and the angle limitation is convenient.

[0071] In specific implementation, the structural shapes of the two stopper portions 51 may be the same or different.

[0072] Reference Figure 8 As shown, when the steering wheel is returned to the center, one of the stopper portions 51 and the other of the stopper portions 51 are located on the same straight line and are arranged opposite to each other. The straight line here is the line between the center of the active component 2 and the center of the driven component 3 (ie, Figure 8 The dotted line MM in the figure).

[0073] This arrangement enables the rotation angle limiting device 100 to quickly locate the position of the steering wheel during assembly, thereby improving the convenience of assembly and achieving high assembly efficiency.

[0074] For example, refer to Fig. 9 and Fig.10 As shown, when the steering wheel is turned to the right rotation limit position or the left rotation limit position, the stop portion 51 of the active component 2 contacts the stop portion 51 of the driven component 3, thereby preventing the active component 2 from continuing to rotate in the same direction, thereby limiting the steering wheel rotation angle. At this time, the active component 2 can only rotate in the reverse direction to disengage the two stop portions 51 from abutting against each other, thereby achieving reverse rotation of the steering wheel.

[0075] For example, refer to Fig. 9 As shown in FIG. 1 , when the steering wheel is rotated to the right turning limit position, the two stopper portions 51 abut against the stopper, so that the steering wheel cannot continue to turn right, but can only turn around. Fig. 9 The steering wheel is rotated in the direction of the one-way arrow S shown, so that the two stoppers 51 rotate away from each other to break contact, and the steering wheel is correspondingly rotated to the left.

[0076] For example, refer to Fig.10 As shown in FIG. 1 , when the steering wheel is rotated to the left turning limit position, the two stopper portions 51 abut against the stopper, so that the steering wheel cannot continue to turn left, but can only turn left around. Fig.10 The steering wheel is rotated in the direction of the one-way arrow N, so that the two stoppers 51 are out of contact, and the steering wheel is correspondingly rotated to the right.

[0077] In some embodiments, reference Figures 2 to 10 As shown, the active component 2 includes a first connecting member 21 and a first transmission member 22, and the driven component 3 includes a second connecting member 31 and a second transmission member 32. The first connecting member 21 is used to connect with the steering wheel, and the first transmission member 22 is connected to the side of the first connecting member 21 away from the steering wheel. The transmission member 4 is arranged between the first transmission member 22 and the second transmission member 32. One of the stoppers 51 is arranged on the first connecting member 21, and the other stopper 51 is arranged on the second connecting member 31.

[0078] Such an arrangement allows the transmission member 4 and the first transmission member 22 and the second transmission member 32 to be staggered in the direction of the rotation axis of the first connecting member 21, thereby being able to avoid, to a certain extent, the transmission member 4 interfering with the rotation of the first connecting member 21, the second connecting member 31 and the stop member 51 during transmission, thereby ensuring the smoothness of the steering wheel rotation and the stability of the steering wheel when limiting the rotation angle.

[0079] In some embodiments, reference Figures 8 to 10 As shown, the first connecting member 21 and the second connecting member 31 have a preset distance, and the preset distance matches the size of the stopper 51 along the radial direction of the first connecting member 21. The radial direction of the first connecting member 21 is specifically Figures 8 to 10 X direction.

[0080] This arrangement ensures that the active component 2 and the driven component 3 can rotate smoothly, and can also save the active component 2 and the driven component 3 in the radial direction of the active component 2 ( Figures 8 to 10 The dimensions in the X direction shown in the figure are reduced, thereby saving the occupied space of the entire rotation angle limiting device 100 to a certain extent, and being able to avoid interference between the active component 2 and the driven component 3 and the external structure to a certain extent, protecting the active component 2 and the driven component 3 to a certain extent. In addition, this can also avoid interference between the active component 2 and the driven component 3 during the rotation process to a certain extent, and the angle limiting effect is good.

[0081] In some embodiments, reference Figure 2As shown, the radial direction of the active component 2 and the radial direction of the driven component 3 can be located on the same straight line. For example, the driven component 3 can be directly arranged directly below the active component 2. This can save the entire rotation angle limiting device 100 in the direction along the rotation axis of the active component 2 to a certain extent. Figure 1 , Figure 2 and Figure 8 The space in the Z direction) is thus beneficial to saving the axial dimension of the entire vehicle steering system and facilitating the arrangement of the vehicle steering system on the entire vehicle.

[0082] In some embodiments, reference Figures 2 to 10 As shown, the diameter of the first transmission member 22 is smaller than the diameter of the second transmission member 32. With this arrangement, when the steering wheel is rotated, the first transmission member 22 rotates more circles than the second transmission member 32, that is, the steering wheel rotates more circles. In this way, with reference to the transmission ratio between the actual vehicle and the steering wheel, when the steering wheel is rotated by a larger angle, the actual rotation angle of the steering wheel is smaller, thereby avoiding the situation where the steering wheel deviates from a larger angle due to improper movement of the steering wheel to a certain extent, thereby improving driving safety to a certain extent.

[0083] In some embodiments, one of the stop portions 51 and the first connecting member 21 is integrally formed, so that the overall structural strength of the stop portion 51 and the first connecting member 21 is high, which is beneficial to improve the stopping effect, thereby improving the reliability and stability during angle limiting, and also facilitating subsequent assembly.

[0084] In some embodiments, another stop portion 51 and the second connecting member 31 are integrally formed, so that the overall structural strength of the stop portion 51 and the second connecting member 31 is high, which is beneficial to improve the stopping effect, thereby improving the reliability and stability during angle limiting, and also facilitates subsequent assembly.

[0085] In some embodiments, reference Figures 2 to 10 As shown, the transmission member 4 is a conveyor belt. Compared with the transmission member being a transmission chain, or a method of achieving angle limitation in the form of a nut screw, a thread, a gear rack, a planetary gear assembly, etc., such a setting can reduce the noise when the vehicle steering wheel rotation angle limiting device 100 is used to a certain extent, thereby improving the user experience.

[0086] Exemplarily, the first transmission member 22 and the second transmission member 32 can be, for example, transmission wheels to form a belt drive with the conveying member 4. In specific implementation, the transmission ratio of the first transmission member 22 and the second transmission member 32 can be adjusted to achieve adjustment of the rotation speeds of the two, thereby adjusting the rotation angle of the steering wheel limited by the rotation angle limit device 100.

[0087] In addition, the position where the two stoppers 51 abut against each other may be adjusted by changing the structure of the stopper 51 , thereby adjusting the range of the steering wheel's rotation angle.

[0088] In some embodiments, anti-slip structures are respectively arranged between the conveying member 4 and the first transmission member 22, and between the conveying member 4 and the second transmission member 32. This can prevent the conveying member 4 from slipping during the conveying process to a certain extent, improve the stability and reliability of the conveying, and further improve the stability and reliability during angle limitation to a certain extent.

[0089] Exemplarily, the anti-skid structure may include belt teeth disposed on the inner wall surface of the transmission member 4, and matching teeth that can cooperate with the belt teeth disposed on the outer circumference of the first transmission member 22 and the outer circumference of the second transmission member 32. Of course, the anti-skid structure may also be an anti-skid protrusion disposed on the transmission member 4.

[0090] In some embodiments, a flexible member is further provided on the periphery of the stop portion 51. Such a configuration can provide a certain degree of buffering protection to the stop portion 51 when the two stop portions 51 abut against each other, thereby reducing to a certain extent the impact between the two stop portions 51 when the steering wheel is rotated to the extreme position, and avoiding to a certain extent the damage or deformation of the stop portion 51, thereby providing good protection for the stop portion 51, reducing noise to a certain extent, extending the service life of the stop portion 51 to a certain extent, and ensuring reliability during angle limitation.

[0091] Exemplarily, the flexible member may be a rubber member, a silicone member, etc. For example, the rubber member may be a rubber sleeve, and the rubber sleeve may be sleeved on the outer periphery of the stopper 51 .

[0092] In some embodiments, reference Figures 2 to 10 As shown, on the tangent line along the connection point between the active component 2 and the stopper 51, each stopper 51 has a first side and a second side opposite to each other. The first side and the second side of each stopper 51 are provided with a snap-fitting cavity 511, and one side of the snap-fitting cavity 511 has an opening. In each stopper 51, the openings of the snap-fitting cavity 511 located on the first side and the snap-fitting cavity 511 located on the second side are oriented in opposite directions, so as to form a snap-fitting protrusion 512 at the other end of each stopper 51, and the snap-fitting protrusion 512 on one stopper 51 can be snapped into the snap-fitting cavity 511 of another stopper 51. Among them, the tangent line of the connection point between the active component 2 and the stopper 51 is specifically Figure 8 Y direction shown.

[0093] Set it up like this, refer to Fig. 9 and Fig.10As shown, when the stop portion 51 on the active component 2 and the stop portion 51 on the driven component 3 abut against each other to limit the rotation angle of the steering wheel, the engaging protrusion 512 on one of the stop portions 51 will be engaged in the engaging recess 511 on the other stop portion 51, thereby achieving the engaging and locking between the two stop portions 51 to a certain extent, ensuring the abutting effect between the two, and thus improving the stability and reliability of the steering wheel angle limit to a certain extent.

[0094] In some embodiments, reference Figures 2 to 10 As shown, the engaging protrusion 512 is an arc-shaped protrusion, wherein the extending direction of the arc-shaped protrusion of one stopper 51 is consistent with the rotation direction of the active component 2 , wherein the extending direction of the arc-shaped protrusion of the other stopper 51 is consistent with the rotation direction of the driven component 3 .

[0095] In this way, the stopper portion 51 can be in surface contact to achieve abutment between the two, which increases the contact area when the two abut to a certain extent, and further ensures the abutment effect and angle limiting effect.

[0096] In some embodiments, reference Figures 9 and 10 As shown, the shape of the engaging protrusion 512 is matched with the shape of the engaging cavity 511. Such a configuration can further improve the reliability of the engaging protrusion 512 and the corresponding engaging cavity 511, and further improve the stability and reliability during angle limiting.

[0097] In some embodiments, reference Figures 2 to 7 As shown, the installation body 1 includes a cover body 11 and a hollow installation shell 12. The installation shell 12 has an opening on the side facing away from the steering wheel, and the cover body 11 is arranged on the opening, and together with the installation shell 12, a mounting cavity 13 is enclosed. Among them, the active component 2, the driven component 3 and the transmission member 4 are all located in the mounting cavity 13, and a first avoidance hole 131 for connecting the active component 2 with the steering wheel is provided on the cavity wall of the mounting cavity 13.

[0098] This arrangement can protect the active component 2, the driven component 3 and the transmission member 4 to a certain extent, and to a certain extent avoid the situation where external components affect the normal transmission of the transmission member 4 between the active component 2 and the driven component 3, thereby ensuring the stability of the transmission process and being conducive to improving the reliability of the angle limit. At the same time, the axial position of the active component 2 and the driven component 3 can be limited to a certain extent through the cavity wall of the installation cavity 13 facing the cover body 11 and the cover body 11, thereby ensuring the stability of the positions of the two to a certain extent and improving the angle limit effect.

[0099] For example, refer to Figure 2 and Figure 6As shown, a support member 14 is further provided on the side of the mounting cavity 13 opposite to the cover body 11, and an arc-shaped groove is opened on the support member 14 in a direction away from the first connecting member 21. Part of the first connecting member 21 is located in the arc-shaped groove, and a clearance is matched with the groove wall of the arc-shaped groove, so as to ensure the smoothness of rotation while also being able to support the active component 2 to a certain extent, thereby improving the stability when the angle is limited.

[0100] Among them, the clearance between the driven component 3 and the cavity wall of the installation cavity 13, and the clearance between the active component 2 and the cavity wall of the installation cavity 13 can be matched. In addition, the aperture of the first avoidance hole 131 can be larger than the outer contour size of the first connecting member 21 to further improve the smoothness of rotation.

[0101] Reference Figure 2 and Figure 6 As shown, an annular extension piece 121 is also provided on the side of the mounting shell 12 facing away from the cover body 11 . The annular extension piece 121 extends toward the direction close to the steering wheel, for example, it can extend to the reducer housing 301 , and the extension piece 121 is specifically connected to the reducer housing 301 .

[0102] In specific implementation, a connecting shaft 15 can also be set on the cavity wall of the installation cavity 13, and a mounting hole can be set in the axial direction of the second connecting member 31. The second connecting member 31 can be sleeved on the connecting shaft 15, and the second connecting member 31 can be connected to the connecting shaft 15 through structures such as bearings, so that the second connecting member 31 can be rotated relative to the installation shaft and the installation shell 12, and the entire driven component 3 can also be supported to a certain extent through the installation shaft.

[0103] In some embodiments, reference Figure 7 As shown, the cover 11 includes a cover body 111 and an annular protrusion 112 disposed on the cover body 111 facing the mounting housing 12. The annular protrusion 112 can extend into the mounting housing 12 when the cover 11 is disposed at the opening, and seal with the inner cavity wall of the mounting housing 12.

[0104] Such an arrangement improves the sealing performance between the cover body 11 and the mounting shell 12 to a certain extent, improves the sealing performance of the mounting cavity 13 to a certain extent, and provides good protection for the structure in the mounting cavity 13.

[0105] For example, the annular protrusion 112 can be made to have an interference fit with the inner wall of the mounting shell 12 to achieve sealing between the two. For example, the annular protrusion 112 can also be made into a flexible protrusion, or a sealing ring, sealant, etc. can be provided between the annular protrusion 112 and the inner wall of the mounting shell 12, as long as the two can be sealed.

[0106] This embodiment also provides a vehicle steering system, including a rotation angle limiting device 100 for a vehicle steering wheel.

[0107] The specific structure and implementation principle of the vehicle steering wheel rotation angle limiting device 100 in this embodiment are the same as those of the vehicle steering wheel rotation angle limiting device 100 provided in the above embodiment, and can bring the same or similar technical effects. For details, please refer to the description of the above embodiment.

[0108] This embodiment also provides a vehicle, including a vehicle steering system.

[0109] The specific structure and implementation principle of the vehicle steering system in this embodiment are the same as those of the vehicle steering system provided in the above embodiment, and can bring the same or similar technical effects. For details, please refer to the description of the above embodiment.

[0110] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0111] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A rotation angle limiting device for a vehicle steering wheel, characterized in that: It includes a mounting body, an active component and a driven component; The active component is used to connect with the steering wheel and can rotate synchronously with the steering wheel; the driven component is arranged on the mounting body, and a transmission member is arranged around the active component and the driven component, and the transmission member can rotate under the drive of the active component and drive the driven component to rotate; An angle limiting structure is provided between the active component and the driven component, and the angle limiting structure is used to limit the rotation angle of the active component so that the steering wheel can rotate between a left rotation limit position and a right rotation limit position.

2. The rotation angle limiting device for a vehicle steering wheel according to claim 1, characterized in that: The angle limiting structure includes two stoppers; One of the stoppers is connected to the active component, and the other of the stoppers is connected to the driven component; When the steering wheel is rotated to the left rotation limit position or the right rotation limit position, one of the stop parts may abut against the other stop part to prevent the steering wheel from continuing to rotate in the same direction.

3. The rotation angle limiting device for a vehicle steering wheel according to claim 2, characterized in that: The active component includes a first connecting member and a first transmission member, and the driven component includes a second connecting member and a second transmission member; The first connecting member is used to connect with the steering wheel, and the first transmission member is connected to a side of the first connecting member away from the steering wheel; the transmission member is arranged between the first transmission member and the second transmission member; One of the stop parts is arranged on the first connecting member, and the other of the stop parts is arranged on the second connecting member.

4. The rotation angle limiting device for a vehicle steering wheel according to claim 3, characterized in that: On a tangent line along a connection point between the active component and the stopper, each of the stoppers has a first side and a second side opposite to each other; The first side and the second side of each of the stop parts are provided with a snap-fitting cavity, and one side of the snap-fitting cavity has an opening; in each of the stop parts, the openings of the snap-fitting cavity located on the first side and the snap-fitting cavity located on the second side are oriented in opposite directions to form a snap-fitting protrusion at the other end of each of the stop parts, and the snap-fitting protrusion on one of the stop parts can be snapped into the snap-fitting cavity of another of the stop parts.

5. The rotation angle limiting device for a vehicle steering wheel according to claim 4, characterized in that: The clamping protrusion is an arc-shaped protrusion, the extending direction of the arc-shaped protrusion of one of the stopper parts is consistent with the rotation direction of the active component, and the extending direction of the arc-shaped protrusion of the other stopper part is consistent with the rotation direction of the driven component; The shape of the clamping protrusion is matched with the shape of the clamping cavity.

6. The rotation angle limiting device for a vehicle steering wheel according to claim 3, characterized in that: When the steering wheel is returned to the center, one of the stop parts and the other of the stop parts are located on the same straight line and are arranged opposite to each other; wherein the straight line is a line connecting the center of the active component and the center of the driven component; And / or, the first connecting member and the second connecting member have a preset distance, and the preset distance matches the size of the stop portion along the radial direction of the first connecting member; And / or, the diameter of the first transmission member is smaller than the diameter of the second transmission member.

7. The rotation angle limiting device for a vehicle steering wheel according to claim 3, characterized in that: One of the stoppers and the first connecting member are integrally formed; And / or, the other stopper and the second connecting member are integrally formed; And / or, the conveying member is a conveyor belt, and anti-slip structures are respectively provided between the conveying member and the first transmission member, and between the conveying member and the second transmission member; And / or, a flexible member is further provided on the periphery of the stopper.

8. The rotation angle limiting device for a vehicle steering wheel according to any one of claims 1 to 7, characterized in that: The installation body includes a cover body and a hollow installation shell; The installation shell has an opening on a side facing away from the steering wheel, and the cover body is arranged at the opening and encloses the installation shell together to form an installation cavity; The active component, the driven component and the transmission member are all located in the installation cavity, and a first avoidance hole for connecting the active component with the steering wheel is arranged on the cavity wall of the installation cavity.

9. The rotation angle limiting device for a vehicle steering wheel according to claim 8, characterized in that: The cover body comprises a cover body and an annular protrusion arranged on a side of the cover body facing the mounting shell; The annular protrusion can extend into the installation shell when the cover body is placed on the opening, and seal with the inner cavity wall of the installation shell.

10. A vehicle steering system, characterized in that: It comprises a rotation angle limiting device for a vehicle steering wheel as claimed in any one of claims 1 to 9.

11. The vehicle steering system according to claim 10, characterized in that: The vehicle steering system also includes a hand feel simulator and a deceleration structure; The deceleration structure is transmission-connected between the hand-feel simulator and the steering wheel; A reducer housing is also provided on the outer side of the deceleration structure, and the reducer housing is used to be arranged between the steering wheel and the angle limiting structure, and the reducer housing is provided with a second avoidance hole for connecting the steering wheel with the deceleration structure and the active component, and a third avoidance hole for connecting the hand feeling simulator with the deceleration structure; The mounting body is detachably connected to a side of the reducer housing that is away from the steering wheel.

12. A vehicle, characterized in that: Comprising a vehicle steering system as claimed in claim 10 or 11.

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