Steering wheel limiting device, steering wheel and vehicle

Abstract

The steering wheel limiting device comprises a first transmission part (1), a second transmission part (2) and a limiting part (3), the first transmission part is used for being connected with the steering wheel, and the second transmission part is in transmission connection with the first transmission part. The steering wheel controls the first transmission part to drive the second transmission part to move, a positioning part (21) is arranged on the second transmission part, the limiting part is movably arranged on one side of the second transmission part, and the limiting part is in blocking connection with the positioning part so as to limit the clockwise and anticlockwise rotation angles of the first transmission part. According to the steer-by-wire steering wheel limiting device, a user can adjust the maximum turning angle range of the steering wheel, so that the steer-by-wire steering wheel limiting device can be applied to different vehicle types, and the manufacturing cost is reduced.

Description

Steering wheel limiting device, steering wheel and vehicle Technical Field

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

[0002] The demand for a wire-controlled intelligent chassis in smart cars has given rise to a steer-by-wire system. Since the steering wheel in a steer-by-wire system has no mechanical parts directly connected to the steering mechanism, a limiter is required to limit the steering wheel angle to prevent the steering wheel from exceeding the steering angle range. The limit angles for commercial vehicles and passenger vehicles are different for different vehicle models. The steering wheel angle range for commercial vehicles is generally larger, while the angle range for passenger vehicles is smaller. The limiter in the steer-by-wire system is not adjustable after leaving the factory, so the maximum steering wheel angle is fixed and is not universal. Different steer-by-wire systems need to be manufactured for different vehicle models, which results in high production costs.

[0003] Summary of the Invention

[0004] The present application provides a steering wheel limit device, a steering wheel and a vehicle, wherein a user can adjust the maximum turning angle range of the steering wheel so that the steering wheel limit device can be applied to different vehicle types, thereby reducing manufacturing costs.

[0005] In a first aspect, the present application provides a steering wheel limiter device comprising a first transmission member, a second transmission member, and a limiter. The first transmission member is connected to a steering wheel, and the second transmission member is in transmission connection with the first transmission member. The steering wheel controls the first transmission member to drive the second transmission member to move. The second transmission member is provided with a positioning portion. The limiter is movably disposed on one side of the second transmission member, and the limiter engages the positioning portion to limit the rotation angle of the first transmission member.

[0006] When a user turns the steering wheel to change the direction of the vehicle, the steering wheel drives the first transmission member connected to the steering wheel to rotate, which in turn drives the second transmission member connected to the first transmission member to move. The second transmission member is provided with a positioning portion. When the positioning portion moves with the second transmission member and is engaged by a stopper, it can restrict further movement of the second transmission member, thereby limiting the range of motion of the second transmission member, thereby limiting the rotation angle of the first transmission member, and ultimately limiting the rotation angle range of the steering wheel. Because the stopper in the present application is movably disposed on one side of the second transmission member, that is, the relative distance between the positioning portion and the stopper of the second transmission member is adjustable, when the positioning portion is in an initial position and stationary, the distance between the stopper and the positioning portion is reduced by moving the stopper, the range of motion of the second transmission member is reduced, and the rotation angle range of the first transmission member and the steering wheel is reduced. Similarly, when the positioning portion is in an initial position and stationary, the distance between the stopper and the positioning portion is increased by moving the stopper, the range of motion of the second transmission member is increased, and the rotation angle range of the first transmission member and the steering wheel is increased. Among them, the above-mentioned initial position is the position of the positioning part when the steering wheel is in a non-steering state. The steering wheel of the present application can drive the first transmission member to rotate clockwise or counterclockwise, and the limiting member can block the positioning part of the second transmission member to limit the maximum clockwise rotation angle and the maximum counterclockwise rotation angle of the first transmission member. Therefore, the steering wheel limiting device of the present application is adjustable and can adjust the maximum rotation angle of the steering wheel. It can be installed on different models to meet the maximum rotation angle requirements of the steering wheels of different models. It is universal and does not require separate production of steering wheel limiting devices with specific rotation angles for different models. It can reduce production costs and improve production efficiency.

[0007] In a possible design, the steering wheel limiting device further includes a frame and a threaded screw, the threaded screw is rotatably connected to the frame, the threaded screw is threadedly connected to the limiting member, and the limiting member is slidably connected to the frame.

[0008] By means of the threaded connection between the threaded screw and the stopper and the sliding connection between the stopper and the frame, the rotational motion of the threaded screw can be converted into linear movement of the stopper relative to the frame, thereby changing the distance between the stopper and the positioning portion to adjust the movable range of the positioning portion (e.g., the rotation angle range), thereby adjusting the rotation angle range of the first transmission member and the steering wheel. At the same time, the threaded connection between the threaded screw and the stopper has a self-locking property. No matter how large the driving force of the steering wheel is, it is difficult for the positioning portion to push the stopper to move linearly relative to the frame through the transmission of the first transmission member and the second transmission member. Therefore, the steering wheel limit device of the present application has a high limit reliability.

[0009] In a possible design, the frame is provided with two oppositely arranged slide grooves, and both ends of the limiting member are respectively slidably connected to the slide grooves. This structure is simple and easy to manufacture and assemble.

[0010] In a possible design, the rack includes a box body, the slide groove is arranged on the side wall of the box body, and a notch is provided on the box body. The notch is connected to the slide groove so that the limiting member is installed in the slide groove through the notch.

[0011] The rack includes a box body, and the side walls of the box body are provided with a slide groove. The limit piece needs to pass through the notch before it can be installed inside the box body and slide with the slide groove located on the side wall. The box body can protect the limit piece and the slide groove from being contaminated by external foreign matter, thereby ensuring the reliability of the sliding connection between the limit piece and the slide groove.

[0012] In a possible design, the notch is a wedge-shaped notch, and the rack further includes a wedge-shaped block, which cooperates with the wedge-shaped notch.

[0013] The cooperation between the wedge block and the wedge-shaped notch is to prevent the limit piece from escaping from the box through the notch from the slide groove. On the other hand, since the wedge-shaped notch is located on the side wall of the box, the wedge block can be engaged with the wedge-shaped notch to prevent the wedge block from escaping from the side wall.

[0014] In one possible design, the outer wall of the box is provided with a recessed portion, which is provided with a countersunk circular hole extending through the side wall of the box. A round table is provided at one end of the threaded screw, which is rotatably mounted in the countersunk circular hole. The frame also includes a pinch plate, which is detachably connected to the recessed portion. The two ends of the round table along the axial direction of the threaded screw are respectively contacted with the step of the countersunk circular hole and the pinch plate to limit the position.

[0015] The threaded screw is rotatably matched with the countersunk circular hole of the box body through the circular table so that the threaded screw can rotate relative to the box body. Along the axial direction of the threaded screw, one end of the circular table abuts against the step of the countersunk circular hole, and the other end of the circular table abuts against the buckle plate installed on the box body to limit the movement of the threaded screw along its own axial direction relative to the box body.

[0016] In a possible design, the gusset plate is provided with a through hole, the end of the threaded screw is formed with a protrusion protruding from the cone, the protrusion is passed through the through hole, and a groove is provided on the protrusion.

[0017] The through hole is used for the protrusion of the cone of the threaded screw to pass through, so that the groove on the protrusion is connected to the external environment of the box. The user can use a tool outside the box to cooperate with the groove and use the tool to drive the threaded screw to rotate, thereby driving the limit piece to slide relative to the box.

[0018] In one possible design, the steering wheel limit device also includes a first motor, the output end of which is connected to the threaded screw for controlling the rotation of the threaded screw. This driving method has high efficiency and high rotation accuracy, which makes it convenient for the user to directly control the rotation of the threaded screw outside the vehicle, thereby adjusting the maximum rotation angle of the steering wheel.

[0019] In a possible design, the steering wheel limiting device further includes a second motor, and one end of the first transmission member passes through the box and is connected to the output shaft of the second motor.

[0020] The second motor is a road sensing motor, which is used to provide a return torque to the first transmission member and the steering wheel, so that the user can sense information such as the vehicle's motion state and road conditions through the steering wheel.

[0021] In a possible design, the first transmission member is provided with a first boss, the box body is provided with a first through hole, the first boss is rotatably passed through the first through hole, and the first transmission member is connected to the output shaft of the second motor through the first boss.

[0022] The first boss is rotatably provided in the first through hole, which enables the first transmission member to rotate relative to the box body on one hand, and on the other hand, the first boss is used to be connected to the output shaft of the second motor outside the box body, so that the transmission connection part (such as the gear meshing part) between the first transmission member and the second transmission member is located inside the box body, which can reduce the risk of contamination by external foreign matter.

[0023] In one possible design, a first keyway is provided on the first boss, and a key is provided on the output shaft of the second motor. The first boss and the output shaft of the second motor are fixedly connected through the cooperation of the first keyway and the key, so that the second motor provides a return torque to the first transmission member through the key connection. This connection method is simple and easy to manufacture and assemble.

[0024] In one possible design, the frame also includes a box cover, which is buckled onto the box body. A window is provided on the box cover along the movement trajectory of the positioning portion, and an angle scale is provided on the edge of the window. The angle scale is used to identify the rotation angle range of the first transmission member or the second transmission member.

[0025] The user can see the movement trajectory of the positioning part through the window of the box cover. When the positioning part is blocked by the limit part, the angle scale on the edge of the window makes it easy for the user to understand the angle scale value corresponding to the position of the positioning part, thereby understanding the specific value of the maximum rotation angle of the first transmission part or the second transmission part, and then accurately adjusting the position of the limit part relative to the second transmission part to meet the maximum steering wheel angle limit requirements of different models.

[0026] In a possible design, the first transmission member and the second transmission member are both gears, and the diameter of the first transmission member is smaller than the diameter of the second transmission member to form a gear reduction mechanism, which has high transmission efficiency and is easy to maintain.

[0027] In one possible design, the transmission ratio between the first transmission member and the second transmission member is 1:6, that is, when the first transmission member rotates six times, the second transmission member can rotate one time. It is understandable that for different vehicles such as passenger cars and commercial vehicles, the maximum number of rotations of the steering wheel in the same direction can be three times, two times, two and a half times, or two and a half times plus a quarter of a turn, etc., in order to be able to adapt to different types of vehicles. When the limiter and the positioning part of the present application are able to abut, the first transmission member can rotate at most three times in the same direction, and the second transmission member can drive the positioning part to rotate at most half a turn. At the same time, under the condition of a transmission ratio of 1:6, the maximum rotation angle of the second transmission member can be made less than 360°, so that the rotation angle of the first transmission member can be adjusted by adjusting the position of the limiter.

[0028] The second aspect of the present application also provides a steering wheel, which includes the steering wheel limiting device provided by the first aspect of the present application and has the effects described above.

[0029] The third aspect of the present application also provides a vehicle, which includes the steering wheel limit device provided by the first aspect of the present application and has the effects described above.

[0030] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of a steering wheel limiting device provided by the present application in a specific embodiment, wherein the box cover is not shown;

[0032] FIG2 is a top view of the steering wheel limiting device in FIG1 , wherein the positioning portion is located at an initial position;

[0033] FIG3 is a top view of the steering wheel limiting device in FIG1 , wherein the positioning portion abuts against the limiting member;

[0034] FIG4 is a schematic diagram of the exploded structure of the steering wheel limiting device in FIG1 at a first viewing angle;

[0035] FIG5 is a schematic diagram of the explosion structure of the chute, the limiter, the wedge-shaped notch and the wedge-shaped block in FIG4 ;

[0036] FIG6 is a schematic diagram of the exploded structure of the steering wheel limiting device in FIG1 at a second viewing angle;

[0037] FIG7 is a schematic structural diagram of the box cover in FIG4 ;

[0038] FIG8 is an exploded structural schematic diagram of the steering wheel limit device in FIG1 from a third viewing angle, wherein the threaded screw, the first transmission member and the wedge block are not shown;

[0039] FIG9 is a schematic diagram of the exploded structure of the gusset plate, threaded screw and box in FIG1 ;

[0040] FIG10 is a schematic structural diagram of the first transmission member in FIG1 at a different viewing angle;

[0041] FIG11 is a schematic structural diagram of the first transmission member in FIG1 from two viewing angles;

[0042] FIG12 is a schematic structural diagram of the first transmission member in FIG1 from three viewing angles;

[0043] FIG13 is a schematic structural diagram of the first transmission member in FIG1 from four viewing angles;

[0044] Reference numerals:

[0045] 1-first transmission member; 11-first boss; 111-first keyway; 12-second boss; 121-second keyway; 2-second transmission member; 21-positioning part; 22-center hole; 3-limiting member; 31-threaded hole; 4-frame; 41-slide; 42-box; 421-side wall; 422-notch; 423-wedge block; 424-outer wall; 425-recessed part; 426-countersunk circular hole; 427-first through hole; 428-fixed shaft; 43-gusset plate; 431-through hole; 44-box cover; 441-window; 442-angle scale; 443-second through hole; 45-limiting disc; 46-first screw; 47-second screw; 48-third screw; 5-threaded screw; 51-round table; 52-protrusion; 521-groove; 6-second motor.

[0046] 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. DETAILED DESCRIPTION

[0047] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0048] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0049] The present application provides a steering wheel limiter, a steering wheel, and a vehicle, relating to the field of vehicle technology. The steering wheel limiter of the present application can be used for a steer-by-wire steering wheel and can be applied to a vehicle (not shown) to limit the maximum steering angle of the steering wheel. Of course, it can also be applied to driving simulators, toy cars, or steering devices. In the subsequent embodiments, the steering wheel limiter of the present application is mainly described by taking its application to a vehicle as an example.

[0050] Referring to Figures 1-4 , the steering wheel limiting device of the present application includes a first transmission member 1, a second transmission member 2, and a limiting member 3. The first transmission member 1 is connected to a steering wheel (not shown), and the second transmission member 2 is in driving connection with the first transmission member 1. The steering wheel controls the movement of the first transmission member 1 and the second transmission member 2. The second transmission member 2 is provided with a positioning portion 21. The limiting member 3 is movably disposed on one side of the second transmission member 2. The limiting member 3 engages the positioning portion 21 to limit the rotation angle of the first transmission member 1.

[0051] In this embodiment, when a user turns the steering wheel to change the direction of travel of the vehicle, the steering wheel drives the first transmission member 1 connected to the steering wheel to rotate, and drives the second transmission member 2 connected to the first transmission member 1 to move. The second transmission member 2 is provided with a positioning portion 21. When the positioning portion 21 moves with the second transmission member 2 and is blocked by the limiting member 3, it can limit the further movement of the second transmission member 2, that is, limit the movable range of the second transmission member 2, thereby limiting the rotation angle of the first transmission member 1, and ultimately limiting the rotation angle range of the steering wheel. Because the limiting member 3 in this application is movably provided on one side of the second transmission member 2, that is, the relative distance between the positioning portion 21 of the second transmission member 2 and the limiting member 3 is adjustable, when the positioning portion 21 is in the initial position and does not move, by moving the limiting member 3 to reduce the distance between the limiting member 3 and the positioning portion 21, the movable range of the second transmission member 2 is reduced, and the rotation angle range of the first transmission member 1 and the steering wheel is reduced. Similarly, when the positioning portion 21 is located at the initial position and does not move, by moving the limiting member 3 so that the distance between the limiting member 3 and the positioning portion 21 increases, the movable range of the second transmission member 2 increases, and the rotatable angle range of the first transmission member 1 and the steering wheel increases. Among them, the above-mentioned initial position is the position of the positioning portion when the steering wheel is in a non-steering state, as shown in Figure 2. The steering wheel of the present application can drive the first transmission member 1 to rotate clockwise or counterclockwise, and the limiting member 3 can block the positioning portion 21 of the second transmission member 2 to limit the maximum clockwise rotation angle and the maximum counterclockwise rotation angle of the first transmission member 1. Therefore, the steering wheel limiting device of the present application is adjustable and can adjust the maximum rotation angle of the steering wheel. It can be installed on different models to meet the maximum rotation angle requirements of the steering wheels of different models. It is universal and does not require a steering wheel limiting device with a specific rotation angle to be separately produced for different models. It can reduce production costs and improve production efficiency.

[0052] The first transmission member 1 and the second transmission member 2 are in transmission connection, forming a reduction mechanism, so that the steering wheel can drive the first transmission member 1 to rotate at least 360 degrees, so that the positioning portion 21 located on the second transmission member 2 has a smaller range of motion relative to the first transmission member 1, that is, the limiting structure formed by the limiting member 3 and the positioning portion 21 occupies a smaller space within the steering wheel limiting device of the present application. The reduction mechanism can be a gear reduction mechanism, a worm gear reduction mechanism, a screw reduction mechanism, etc. The first transmission member 1 can be a small-diameter gear, a worm gear, or a screw, and correspondingly, the second transmission member 2 can be a large-diameter gear, a worm gear, or a moving block threadedly connected to the screw. The positioning portion 21 can be provided on the large-diameter gear, worm gear, or moving block. Therefore, the limiting member 3 can limit the rotation angle of the large-diameter gear, the rotation angle of the worm gear, or the moving distance of the moving block, thereby limiting the rotation angle of the small-diameter gear, the rotation angle of the worm gear, or the rotation angle of the screw, and ultimately limiting the maximum rotation angle of the steering wheel.

[0053] Specifically, please refer to Figures 1 to 4. The first transmission member 1 and the second transmission member 2 of the present application can both be gears. The diameter of the first transmission member 1 is smaller than the diameter of the second transmission member 2 to form a gear reduction mechanism. The reduction mechanism has high transmission efficiency and is easy to maintain.

[0054] The following descriptions of the first transmission member 1 and the second transmission member 2 are all based on the gear reduction mechanism as an example.

[0055] More specifically, referring to Figures 1-4 , the transmission ratio between the first transmission member 1 and the second transmission member 2 can be 1:6, meaning that for every six rotations of the first transmission member 1, the second transmission member 2 can rotate one rotation. It is understood that for different vehicles, such as passenger cars and commercial vehicles, the maximum number of steering wheel rotations in the same direction can be three rotations, two rotations, two and a half rotations, or two and a half rotations plus a quarter turn, to accommodate different types of vehicles. In this embodiment, when the stopper 3 is in contact with the positioning portion 21, the first transmission member 1 can rotate a maximum of three rotations in the same direction, and the second transmission member 2 can drive the positioning portion 21 to rotate a maximum of half a rotation. Furthermore, with a transmission ratio of 1:6, the maximum rotation angle of the second transmission member 2 can be less than 360°, making it easier to adjust the rotation angle of the first transmission member 1 by adjusting the position of the stopper 3.

[0056] Of course, the transmission ratio between the first transmission member 1 and the second transmission member 2 may also be 1:2, 1:3, 1:4, 1:5 or other reduction ratio values.

[0057] Please refer to Figures 1 to 4. The steering wheel limit device of the present application also includes a frame 4 and a threaded screw 5. The threaded screw 5 is rotatably connected to the frame 4, the threaded screw 5 is threadedly connected to the limit member 3, and the limit member 3 is slidably connected to the frame 4.

[0058] In this embodiment, the threaded connection between the threaded screw 5 and the limiter 3 and the sliding connection between the limiter 3 and the frame 4 can convert the rotational motion of the threaded screw 5 into linear movement of the limiter 3 relative to the frame 4, thereby changing the distance between the limiter 3 and the positioning portion 21 to adjust the movable range (e.g., the rotation angle range) of the positioning portion 21, and further adjust the rotation angle range of the first transmission member 1 and the steering wheel. At the same time, the threaded connection between the threaded screw 5 and the limiter 3 has a self-locking property. No matter how large the driving force of the steering wheel is, it is difficult for the positioning portion 21 to push the limiter 3 to move linearly relative to the frame 4 through the transmission of the first transmission member 1 and the second transmission member 2. Therefore, the steering wheel limit device of the present application has a high limit reliability.

[0059] Among them, since the limit member 3 moves in a straight line relative to the frame 4, when the first transmission member 1 and the second transmission member 2 are both gears, the second transmission member 2 drives the positioning part 21 to have the same clockwise rotation angle range and counterclockwise rotation angle range, so that the first transmission member 1 and the steering wheel have the same clockwise and counterclockwise rotation angle range.

[0060] Specifically, referring to Figures 1, 4, 5 and 6, the frame 4 is provided with two oppositely arranged slide grooves 41, and both ends of the limit member 3 are respectively slidably connected to the slide grooves 41. The structure is simple and easy to manufacture and assemble.

[0061] Among them, a threaded hole 31 is set in the middle of the limiter 3, and the threaded hole 31 is used for threaded connection of the threaded screw 5 so that the interaction force between the two ends of the limiter 3 and the two oppositely arranged sliding grooves 41 is the same, thereby improving the service life of the limiter 3.

[0062] More specifically, referring to Figures 1, 4, 5 and 6, the frame 4 includes a box body 42, a slide groove 41 is arranged on the side wall 421 of the box body 42, and a notch 422 is provided on the box body 42. The notch 422 is connected to the slide groove 41 so that the limit member 3 can be installed in the slide groove 41 through the notch 422.

[0063] In this embodiment, the frame 4 includes a box body 42, and the side wall 421 of the box body 42 is provided with a slide groove 41. The limit member 3 needs to pass through the notch 422 before it can be installed into the inside of the box body 42 and slide with the slide groove 41 located on the side wall 421. The box body 42 can protect the limit member 3 and the slide groove 41 from being contaminated by external foreign matter, thereby ensuring the reliability of the sliding connection between the limit member 3 and the slide groove 41.

[0064] 1 , 4 , 5 and 6 , the notch 422 may be a wedge-shaped notch, and the rack 4 further includes a wedge-shaped block 423 , which cooperates with the wedge-shaped notch.

[0065] In this embodiment, the cooperation between the wedge block 423 and the wedge-shaped notch is, on the one hand, to prevent the limit member 3 from detaching from the box body 42 through the notch 422 from the slide groove 41; on the other hand, since the wedge-shaped notch is located on the side wall 421 of the box body 42, the wedge block 423 can be engaged with the wedge-shaped notch to prevent the wedge block 423 from detaching from the side wall 421.

[0066] 4 and 7 , the frame 4 may further include a box cover 44 , which is buckled onto the box body 42 . A window 441 is provided on the box cover 44 along the movement trajectory of the positioning portion 21 . An angle scale 442 is provided on the edge of the window 441 . The angle scale 442 is used to identify the rotation angle range of the first transmission member 1 or the second transmission member 2 .

[0067] In this embodiment, the user can see the movement trajectory of the positioning part 21 through the window 441 of the box cover 44. When the positioning part 21 is blocked by the limit member 3, the angle scale 442 on the edge of the window 441 makes it convenient for the user to understand the angle scale value corresponding to the position of the positioning part 21, thereby understanding the specific value of the maximum rotation angle of the first transmission member 1 or the second transmission member 2, and then accurately adjust the position of the limit member 3 relative to the second transmission member 2 to meet the maximum steering wheel angle limit requirements of different models.

[0068] The angle scale values ​​of the angle scale 442 of this embodiment correspond to the rotation angle of the first transmission member 1 , so that the user can directly understand the value of the maximum rotation angle of the steering wheel.

[0069] 4 , a third screw 48 is threadedly provided in the box cover 44 and connected to the box body 42 . When the box cover 44 is engaged with the box body 42 , the box cover 44 can restrict the wedge block 423 from escaping from the wedge-shaped notch in the side wall 421 .

[0070] Referring to Figures 6-9 , the outer wall 424 of the housing 42 is provided with a recessed portion 425, which is provided with a countersunk circular hole 426 extending through the side wall 421 of the housing 42. A round platform 51 is provided at one end of the threaded screw 5, which is rotatably disposed in the countersunk circular hole 426. The frame 4 also includes a pinch plate 43, which is detachably connected to the recessed portion 425. The two ends of the round platform 51 along the axial direction of the threaded screw 5 are respectively contacted with the steps of the countersunk circular hole 426 and the pinch plate 43 to limit their position.

[0071] In this embodiment, the threaded screw 5 is rotatably engaged with the countersunk circular hole 426 of the box body 42 through the cylindrical table 51, so that the threaded screw 5 can rotate relative to the box body 42. Along the axial direction of the threaded screw 5, one end of the cylindrical table 51 abuts against the step of the countersunk circular hole 426, and the other end of the cylindrical table 51 abuts against the buckle plate 43 installed on the box body 42 to limit the movement of the threaded screw 5 along its own axial direction relative to the box body 42.

[0072] 9 , the second screw 47 can be passed through the buckle plate 43 and fixedly connected to the recessed portion 425 .

[0073] 9 , the gusset plate 43 is provided with a through hole 431 , and the end of the threaded screw 5 is formed with a protrusion 52 protruding from the truncated cone 51 . The protrusion 52 is passed through the through hole 431 , and a groove 521 is provided on the protrusion 52 .

[0074] In this embodiment, the through hole 431 is used for the protrusion 52 of the cone 51 of the threaded screw 5 to pass through, so that the groove 521 located on the protrusion 52 is connected to the external environment of the box body 42. The user can use a tool to cooperate with the groove 521 outside the box body 42, and use the tool to drive the threaded screw 5 to rotate, thereby driving the limit member 3 to slide relative to the box body 42.

[0075] The groove 521 is an I-shaped groove. Of course, the groove 521 can also be a X-shaped groove or a groove in other shapes.

[0076] In addition, the user can drive the threaded screw 5 to rotate manually or electrically.

[0077] Specifically, the steering wheel limit device of the present application also includes a first motor (not shown in the figure), and the output end of the first motor (not shown in the figure) is connected to the threaded screw 5 for controlling the rotation of the threaded screw 5. This driving method has high efficiency and high rotation accuracy, which makes it convenient for the user to directly control the rotation of the threaded screw outside the vehicle, thereby adjusting the maximum rotation angle of the steering wheel.

[0078] 1 and 4 , the steering wheel limiting device further includes a second motor 6 , and one end of the first transmission member 1 passes through the box 42 and is connected to an output shaft (not shown) of the second motor 6 .

[0079] In this embodiment, the second motor 6 is a road sensing motor, which is used to provide a return torque to the first transmission member 1 and the steering wheel, so that the user can sense information such as the vehicle's motion state and road conditions through the steering wheel.

[0080] Please refer to Figures 4, 8, 10-13, the first transmission member 1 is provided with a first boss 11, and a first through hole 427 is provided on the box body 42. The first boss 11 is rotatably passed through the first through hole 427, and the first transmission member 1 is connected to the output shaft 61 of the second motor 6 through the first boss 11.

[0081] In this embodiment, the first boss 11 is rotatably inserted into the first through hole 427. On the one hand, it enables the first transmission member 1 to rotate relative to the box body 42. On the other hand, the first boss 11 is used to be connected to the output shaft 61 of the second motor 6 outside the box body 42, so that the transmission connection part (such as the gear meshing part) between the first transmission member 1 and the second transmission member 2 is located inside the box body 42, which can reduce the risk of contamination by external foreign matter.

[0082] The first transmission member 1 is further provided with a second boss 12 , and the box cover 44 is provided with a second through hole 443 . The second boss 12 is rotatably passed through the second through hole 443 for connection with the steering wheel.

[0083] In the above embodiment, the first boss 11 and the second boss 12 of the first transmission member 1 abut against the box body 42 and the box cover 44 respectively, so as to limit the first transmission member 1 from moving along its own axial direction relative to the box body 42 .

[0084] Please refer to Figures 10 to 13. A first keyway 111 is provided on the first boss 11, and a key (not shown in the figures) is provided on the output shaft of the second motor 6. The first boss 11 and the output shaft of the second motor 6 are fixedly connected through the first keyway 111 and the key, so that the second motor 6 provides a return torque to the first transmission member 1 through the key connection. This connection method is simple and easy to manufacture and assemble.

[0085] Correspondingly, a second keyway 121 is provided on the second boss 12 for forming a key connection with the steering wheel so that the first transmission member 1 transmits a positive torque back to the steering wheel.

[0086] In the above embodiment, please refer to Figure 8, the box body 42 is provided with a fixed shaft 428, which is used to rotate with the center hole 22 of the second transmission member 2. The box body 42 is also provided with a limiting disc 45, which abuts against the end of the second transmission member 2 away from the box body 42. The first screw 46 is passed through the limiting disc 45 and is threadedly connected to the fixed shaft 428 to limit the axial movement of the second transmission member 2 relative to the fixed shaft 428.

[0087] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A steering wheel limiting device, characterized in that: The steering wheel limiting device comprises: a first transmission member, configured to be connected to the steering wheel; a second transmission member, in transmission connection with the first transmission member, the steering wheel controls the first transmission member to drive the second transmission member to move, and the second transmission member is provided with a positioning portion; A limiting member is movably provided on one side of the second transmission member, and the limiting member is in contact with the positioning portion to limit the rotation angle of the first transmission member.

2. The steering wheel limiting device according to claim 1, characterized in that: It also includes a frame and a threaded screw, wherein the threaded screw is rotatably connected to the frame, the threaded screw is threadedly connected to the limiting member, and the limiting member is slidably connected to the frame.

3. The steering wheel limiting device according to claim 2, characterized in that: The frame is provided with two oppositely arranged sliding grooves, and the two ends of the limiting member are respectively slidably connected to the sliding grooves.

4. The steering wheel limiting device according to claim 3, characterized in that: The frame includes a box body, and the slide groove is arranged on the side wall of the box body; The box body is provided with a notch, and the notch is communicated with the slide groove so that the limiting member is installed in the slide groove through the notch.

5. The steering wheel limiting device according to claim 4, characterized in that: The notch is a wedge-shaped notch, and the frame further includes a wedge-shaped block, which cooperates with the wedge-shaped notch.

6. The steering wheel limiting device according to claim 4, characterized in that: The outer wall of the box body is provided with a recessed portion, the recessed portion is provided with a countersunk circular hole penetrating the side wall of the box body, one end of the threaded screw is provided with a round table, and the round table is rotatably arranged in the countersunk circular hole; The frame further includes a gusset plate, which is detachably connected to the recessed portion. Two ends of the frustum along the axial direction of the threaded screw are respectively in contact with the steps of the countersunk circular hole and the gusset plate for limiting position.

7. The steering wheel limiting device according to claim 6, characterized in that: The gusset plate is provided with a through hole, and the end of the threaded screw is formed with a protrusion protruding from the truncated cone. The protrusion is penetrated by the through hole, and a groove is provided on the protrusion.

8. The steering wheel limiting device according to claim 2, characterized in that: It also includes a first motor, the output end of which is connected to the threaded screw for controlling the rotation of the threaded screw.

9. The steering wheel limiting device according to claim 4, characterized in that: It also includes a second motor, and one end of the first transmission member passes through the box body and is connected to the output shaft of the second motor.

10. The steering wheel limiting device according to claim 9, characterized in that: The first transmission member is provided with a first boss, the box body is provided with a first through hole, the first boss is rotatably passed through the first through hole, and the first transmission member is connected to the output shaft of the second motor through the first boss.

11. The steering wheel limiting device according to claim 10, characterized in that: A first keyway is provided on the first boss, a key is provided on the output shaft of the second motor, and the first boss and the output shaft of the second motor are fixedly connected through the cooperation between the first keyway and the key.

12. The steering wheel limiting device according to any one of claims 4 to 11, characterized in that: The frame also includes a box cover, which is buckled on the box body. Along the movement trajectory of the positioning part, the box cover is provided with a window, and the edge of the window is provided with an angle scale, which is used to mark the rotation angle range of the first transmission member or the second transmission member.

13. The steering wheel limiting device according to any one of claims 1 to 12, characterized in that: The first transmission member and the second transmission member are both gears, and a diameter of the first transmission member is smaller than a diameter of the second transmission member.

14. The steering wheel limiting device according to claim 13, characterized in that: The transmission ratio of the first transmission member to the second transmission member is 1:

6.

15. A steering wheel, characterized in that: The steering wheel includes a steering wheel limiting device according to any one of claims 1 to 14.

16. A vehicle, characterized in that: The vehicle comprises the steering wheel limiting device according to any one of claims 1-14.

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