All-terrain vehicle

Abstract

The all-terrain vehicle comprises a vehicle frame, a vehicle body covering part, a steering system and a walking system, the steering system comprises a steering wheel and a steering component connected with the steering wheel, the steering component comprises a shell, a steering rack, a transmission mechanism and a limiting part, a containing cavity is defined in the shell, and the steering rack is located in the containing cavity; the transmission mechanism is in transmission connection to the steering rack to drive the steering rack to move in the width direction of the frame; the limiting piece is at least partially located in the containing cavity, the limiting piece is fixed to the shell and abuts against the steering rack, the side, facing the steering rack, of the limiting piece is provided with a limiting part for limiting the steering rack to rotate around the axis of the limiting part, the limiting part is arranged to be a groove body allowing the steering rack to penetrate through, and the groove wall of the groove body abuts against the peripheral wall of the steering rack. And the abutting end surfaces of the two are non-arc-shaped surfaces. Through the arrangement, the abrasion of the steering rack is smaller, so that the stability of a steering part is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle engineering, and in particular to an all-terrain vehicle. Background Art

[0002] The function of a vehicle's steering system is to control the vehicle's direction according to the driver's wishes. When turning, the driver applies a steering torque to the steering wheel. This torque is input into the steering gear via the steering shaft, steering universal joint, and steering drive shaft. The steering gear amplifies the torque and decelerates the motion, transmitting it to the steering rocker arm. This torque is then transmitted through the steering tie rod to the steering knuckle arm fixed to the steering knuckle, causing the steering knuckle and the steering wheel it supports to deflect.

[0003] The steering gear drives the steering tie rod to move through the cooperation of the gear and rack. Since the rack axis and the inner point axis of the steering tie rod are not coaxial, existing products have no structure to restrict the circumferential movement of the rack. When the tire force is transmitted from the steering tie rod to the rack, there is a circumferential force, which pushes the rack to rotate, resulting in abnormal tooth wear, large clearance, and even structural damage. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the present application aims to provide an all-terrain vehicle, the structure of which is more stable for the steering component and which can reduce wear on the internal components of the steering component.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] The present application provides an all-terrain vehicle, comprising: a frame; a body covering connected to the frame; a steering system, the steering system comprising a steering wheel and a steering component connected to the steering wheel, the steering component being at least partially disposed on the frame, the steering component comprising a housing, a steering rack, and a transmission mechanism connected to the steering wheel, the housing defining an interior of a receiving cavity, the steering rack being located within the receiving cavity, the transmission mechanism being transmission-connected to the steering rack to drive the steering rack to move along the width direction of the frame; a running system, the running system being at least partially located below the frame, the running system comprising front wheels and rear wheels spaced apart along the length direction of the frame, the steering rack being transmission-connected to the front wheels; the steering component further comprising: a stopper, the stopper being at least partially located within the receiving cavity, the stopper being fixed to the housing, the stopper being in contact with the steering rack, the stopper having a stopper on a side facing the steering rack for limiting rotation of the steering rack about its own axis, the stopper being configured as a slot for the steering rack to pass through, the slot wall of the slot being in contact with the outer peripheral wall of the steering rack, and the abutting end surfaces of the two being non-arc-shaped surfaces.

[0007] Furthermore, the shape of the groove wall of the groove body matches the shape of the corresponding position of the outer peripheral wall of the steering rack.

[0008] Furthermore, the limiting member is located on the peripheral side of the steering rack, and the groove body is a notch provided on the end surface of the limiting member facing the steering rack.

[0009] Furthermore, the outer peripheral wall of the steering rack has a first plane area extending along its own axial direction, and the groove wall has a second plane area arranged side by side with the first plane area.

[0010] Furthermore, there are at least two second planar regions, and the two second planar regions are arranged at intervals along the circumference of the steering rack, and the planes where the two second planar regions are located intersect with each other.

[0011] Furthermore, the transmission mechanism includes a gear, the steering wheel is transmission-connected to the gear, the steering rack includes a rack segment meshing with the gear, and the limiting portion is located on a side of the rack segment away from the gear.

[0012] Furthermore, the steering component also includes a pull rod and a connecting mechanism. The pull rod is located outside the accommodating cavity and is connected to the front wheels. Each front wheel corresponds to a pull rod, and the two pull rods are connected through the connecting mechanism. The side wall of the shell is provided with a through hole, and at least part of the connecting mechanism passes through the through hole and is fixedly connected to the steering rack. The through hole extends along the axial direction of the steering rack.

[0013] Furthermore, the connecting mechanism includes a connecting rod, a connecting piece and a connecting plate connected to the connecting rod. The connecting rod and the connecting plate are both located outside the accommodating cavity. The two ends of the connecting rod are respectively connected to the pull rods on the corresponding sides. The connecting plate and the steering rack are respectively provided with connecting holes connected to the connecting piece, and part of the connecting piece passes through the through-hole.

[0014] Furthermore, the steering component also includes an elastic member, which abuts against the side of the limiting member away from the steering rack. The elastic member acts on the limiting member so that the limiting portion always has a tendency to abut against the outer peripheral wall of the steering rack.

[0015] Furthermore, the outer shell includes a shell and a blocking member, which enclose a accommodating cavity. The accommodating cavity includes a steering rack mounting cavity and a limit member mounting cavity connected to the steering rack mounting cavity. The steering rack mounting cavity extends in a direction parallel to the axial direction of the steering rack. The steering rack is located in the steering rack mounting cavity. The limit member mounting cavity extends in a direction intersecting with the axial direction of the steering rack. The shell is provided with an installation opening for the limit member to be inserted into the limit member mounting cavity at a position corresponding to the limit member mounting cavity. The blocking member is arranged at the installation opening and blocks the installation opening. The elastic member is located between the blocking member and the limit member.

[0016] The all-terrain vehicle provided herein is provided with a stopper fixed within the housing and abutting the steering rack. This allows the stopper portion of the stopper facing the steering rack to abut against the outer peripheral wall of the steering rack, with the contacting end surfaces being non-arc-shaped. By changing the shape of the contact surface between the steering rack and the stopper, friction between the two is increased, preventing relative rotation between the steering rack and the housing, reducing wear on the steering rack, and improving the stability of the steering component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an all-terrain vehicle provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a portion of the structure of an all-terrain vehicle provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of the steering wheel, transmission mechanism and steering components provided in an embodiment of the present application;

[0020] Figure 4 A longitudinal cross-sectional view of a steering component provided in an embodiment of the present application;

[0021] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0022] Figure 6 A schematic structural diagram of a steering rack provided in an embodiment of the present application;

[0023] Figure 7 A schematic structural diagram of the position limiting member provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation of the present application will be clearly and completely described below in conjunction with the drawings in the implementation of the present application.

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation of the present application will be clearly and completely described below in conjunction with the drawings in the implementation of the present application.

[0026] like Figure 1 and Figure 2As shown, the all-terrain vehicle 100 includes a frame 11, a body panel 12, a steering system 13, a running system 14, and a suspension system 15. The body panel 12 is at least partially mounted on the frame 11. The steering system 13 includes a steering wheel 131 and a steering component 132 connected to the steering wheel 131. The steering component 132 is at least partially mounted on and fixed to the frame 11. The steering component 132 is in transmission connection with the running system 14 and is driven by the operation of the steering wheel 131.

[0027] Furthermore, the running system 14 is connected to the vehicle frame 11 via a suspension assembly 15. The suspension assembly 15 includes a front suspension 151 and a rear suspension 152. The running system 14 includes front wheels 151 and rear wheels 152 spaced apart along the length of the vehicle frame 11. The front wheels 151 are connected to the vehicle frame 11 via the front suspension 151, and the rear wheels 152 are connected to the vehicle frame 11 via the rear suspension 152.

[0028] In order to clearly illustrate the technical solution of this application, the following is also provided: Figure 1 The front-to-back, left-to-right, and up-to-down directions of the all-terrain vehicle 100 are shown. It should be noted that in the following description of the all-terrain vehicle 100, the length direction of the frame 11 is parallel to the front-to-back direction of the all-terrain vehicle 100, the width direction of the frame 11 is parallel to the left-to-right direction of the all-terrain vehicle 100, and the height direction of the frame 11 is parallel to the up-to-down direction of the all-terrain vehicle 100.

[0029] like Figures 3 to 5As shown, the steering component 132 includes a housing 1321, a steering rack 1322, a transmission mechanism 1323, a stopper 1324, an elastic member 1325, a pull rod 1326, and a connecting mechanism 1327. The housing 1321 defines an interior housing 102. The steering rack 1322 is mounted to the housing 1321 and disposed within the housing 102. The steering rack 1322 extends along the width of the vehicle frame 11 and is axially movable relative to the housing 1321. One end of the transmission mechanism 1323 is connected to the steering wheel 131, and the other end of the transmission mechanism 1323 is connected to the steering rack 1322. The transmission mechanism 1323 transmits the rotational force applied to the steering wheel 131 to the steering rack 1322, thereby driving the steering rack 1322 to move. A stopper 1324 is fixed to the outer shell 1321, with at least a portion of the stopper 1324 disposed within the accommodating cavity 102. The stopper 1324 is configured to apply a force to the steering rack 1322 to prevent the steering rack 1322 from rotating relative to the outer shell 141. An elastic member 1325 abuts against the side of the stopper 1324 facing away from the steering rack 1322. A pull rod 1326 is fixedly connected to the steering rack 1322 via a connecting mechanism 1327. The pull rod 1326 is connected to the travel system 14. During steering, the steering force applied to the steering wheel 131 is transmitted to the steering rack 1322 via the transmission mechanism 1323, driving the steering rack 1322 to move along the width of the vehicle frame 11. The steering rack 1322 then drives the pull rod 1326 via the connecting mechanism 1327 to adjust the direction of the travel system 14.

[0030] In this embodiment, the transmission mechanism 1323 includes a gear 1323a, a steering column 1323b, a first transmission shaft 1323c, a second transmission shaft 1323d, a third transmission shaft 1323e, and a fourth transmission shaft 1323f. The steering column 1323b is gradually tilted forward from top to bottom. The upper end of the steering column 1323b is connected to the steering wheel 131. The lower end of the steering column 1323b is rotatably connected to the upper end of the first transmission shaft 1323c. The upper end of the second transmission shaft 1323d is rotatably connected to the lower end of the first transmission shaft 1323c. The lower end of the second transmission shaft 1323d is rotatably connected to the upper end of the third transmission shaft 1323e. The lower end of the third transmission shaft 1323e is rotatably connected to the upper end of the fourth transmission shaft 1323f. The gear 1323a is mounted on the lower end of the fourth transmission shaft 1323f. Gear 1323a is fixedly connected to the fourth transmission shaft 1323f. The fixed connection method can be that the gear 1323a is formed on the fourth transmission shaft 1323f, or the gear 1323a is fixed to the fourth transmission shaft 1323f via a fixing member. The term "fixed connection" is defined as a non-pivotable connection method, that is, the two components that are set to be fixedly connected cannot undergo relative displacement or relative rotation when connected. The steering wheel 131 is connected to the gear 1323a through the steering column 1323b, the first transmission shaft 1323c, the second transmission shaft 1323d, the third transmission shaft 1323e and the fourth transmission shaft 1323f in sequence.

[0031] like Figure 6 As shown, the steering rack 1322 includes a rack segment 1322a meshed with the gear 1323a. When the steering wheel 131 is rotated, the gear 1323a rotates around its own axis driven by the rotation of the steering wheel 131. Since the gear 1323a is meshed with the rack segment 1322a, the rack segment 1322a is driven to move along the axial direction of the steering rack 1322 relative to the housing 1321.

[0032] like Figure 5 and Figure 7As shown, the limiting member 1324 is at least partially located within the accommodating cavity 102. The limiting member 1324 is fixed to the housing 1321. The limiting member 1324 has a limiting portion 1324a that limits the steering rack 1322 from rotating about its own axis. In this embodiment, the limiting portion 1324a is located on the side of the limiting member 1324 facing the rack segment 1322a. The limiting portion 1324a is a groove body for the steering rack 1322 to pass axially, that is, it passes through the groove body along its own axis. The groove body is provided on the limiting member 1324, and the groove wall of the groove body abuts the outer peripheral wall of the steering rack 1322, and the end faces where the two abut are non-arc-shaped surfaces. The shape of the groove wall of the groove body matches the shape of the corresponding position of the outer peripheral wall of the steering rack 1322. For example, taking an end face where the limiting member 1324 contacts the steering rack 1322 as an example, the end face is a plane; or in other words, the end face is two continuous planes, and an angle ranging from 0° to 90° is formed between the two continuous planes; or in other words, the end face is serrated. The shape of the end face is not specifically limited in the embodiment of the present application. Through the above-mentioned arrangement, the contact area between the limiting member 1324 and the steering rack 1322 is larger, thereby avoiding relative rotation between the steering rack 1322 and the limiting member 1324, that is, the steering rack 1322 rotates relative to the limiting member 1324 around its own axis. If the rotation angle of the steering rack 1322 exceeds the threshold, it may cause the rack segment 1322a of the steering rack 1322 to separate from the gear 1323a. The above-mentioned arrangement can ensure the stability of the steering component 132 during operation.

[0033] In some embodiments, the limiting portion 1324a may also be provided in the form of a protrusion on the limiting member 1324, in which case the steering rack 1322 has a slot at a position corresponding to the protrusion that plugs into and mates with the protrusion, and the slot extends along the axial direction of the steering rack 1322. In some embodiments, the limiting portion 1324a may also be provided in the form of a protrusion on the outer peripheral wall of the steering rack 1322, and a slot is provided in the limiting member 1324 that plugs into and mates with the protrusion, and the slot extends along the axial direction of the steering rack 1322.

[0034] like Figure 6 and Figure 7 As shown, the outer peripheral wall of steering rack 1322 has a first planar region 1322b extending along its axial direction. First planar region 1322b is located on the side of steering rack 1322 facing rack segment 1322a, and the length of first planar region 1322b is shorter than the length of rack segment 1322a. The groove wall of the groove body has a second planar region 1324b extending along the axial direction of steering rack 1322. Second planar region 1324b and first planar region 1322b are arranged side by side and can cooperate with each other.

[0035] In some embodiments, there are at least two second planar regions 1324b. In this embodiment, there are two second planar regions 1324b, spaced apart along the circumference of the steering rack 1322. Each second planar region 1324b corresponds to a first planar region 1322b, so there are also two first planar regions 1322b. The planes of the two second planar regions 1324b intersect, meaning that the longitudinal cross-section of the second planar regions 1324b is a straight line segment, with the extensions of the two straight line segments intersecting. In this embodiment, the extensions of the two straight line segments form an acute angle with each other. The longitudinal cross-section of the groove wall includes the two straight line segments and a middle segment 1324c located between the two straight line segments. The two straight line segments are arranged obliquely relative to the middle segment 1324c, gradually tilting toward each other from the outside to the inside. The terms "inside" and "outside" are used with reference to the notch; for example, the straight line segment is located outside the middle segment 1324c.

[0036] The stopper 1324 is located around the steering rack 1322. In some embodiments, the groove is a notch formed on the end surface of the stopper 1324 facing the steering rack 1322. At this time, part of the steering rack 1322 passes through the notch.

[0037] In order to ensure that the steering rack 1322 always matches the groove wall of the limiting member 1324 and to more reliably limit the circumferential rotation of the steering rack 1322, the elastic member 1325 makes the limiting portion always have a tendency to resist the outer peripheral wall of the steering rack 1322, and the elastic member 1325 acts on the limiting member 1324.

[0038] like Figure 5 As shown, in this embodiment, the housing 1321 further includes a blocking member 1321b, which is used to seal the aforementioned accommodating chamber 102. The accommodating chamber 102 includes a steering rack mounting chamber 1021 and a position-limiting member mounting chamber 1022 communicating with the steering rack mounting chamber 1021. The steering rack mounting chamber 1021 extends along the axial direction of the steering rack 1322, and the steering rack 1322 is located within the steering rack mounting chamber 1021. The position-limiting member mounting chamber 1022 extends along a direction intersecting the axial direction of the steering rack 1322. In this embodiment, the extension direction of the position-limiting member mounting chamber 1022 is perpendicular to the axial direction of the steering rack 1322.

[0039] like Figure 5As shown, the housing 1321 has an installation opening 103 at a position corresponding to the stopper installation cavity 1022, through which the stopper 1324 is inserted. A blocking member 1321b is disposed at the installation opening 103 to block the installation opening 103. The elastic member 1325 is a spring located between the blocking member 1321b and the stopper 1324. In some embodiments, the elastic member 1325 may also be in the form of a spring.

[0040] In order to accommodate the spring, Figure 5 and Figure 7 As shown, the blocking member 1321b has a first groove 104 on the end surface facing the limiting member, which is recessed in the direction away from the limiting member 1324, and the limiting member 1324 has a second groove 105 on the end surface facing the blocking member 1321b, which is recessed in the direction away from the blocking member 1321b. The second groove 105 corresponds to the first groove 104, and the above-mentioned spring is located in the space enclosed by the first groove 104 and the second groove 105.

[0041] like Figure 1 Combine Figure 3 As shown, the steering rack 1322 is transmission-connected to the front wheels 151. The pull rod 1326 is located outside the accommodating cavity 102 and is rotationally connected to the corresponding position of the front wheels 151. Each front wheel 151 corresponds to a pull rod 1326. The connection method between each front wheel 151 and the pull rod 1326 is the same as the prior art and will not be repeated in this embodiment.

[0042] like Figure 3 and Figure 4 As shown, the two tie rods 1326 are connected by a connecting mechanism 1327. A through-hole 1321c is defined in the sidewall of the housing 1321, through which a portion of the connecting mechanism 1327 passes. The through-hole 1321c extends axially along the steering rack 1322. In this embodiment, the through-hole 1321c is located on the housing 1321. The connecting mechanism 1327 passes through the through-hole 1321c and is fixedly connected to the steering rack 1322.

[0043] like Figure 4 As shown, in this embodiment, the connecting mechanism 1327 includes a connecting rod 1327a, a connecting member 1327b, and a connecting plate 1327c connected to the connecting rod 1327a. The connecting rod 1327a and the connecting plate 1327c are both located outside the accommodating cavity 102. The two ends of the connecting rod 1327a are respectively connected to the pull rod 1326 on the corresponding side. The connecting plate 1327c and the steering rack 1322 are respectively provided with connecting holes 106 connected to the connecting member 1327b. A portion of the connecting member 1327b passes through the connecting hole 106 and the through hole 1321c.

[0044] There are two connecting members 1327b, spaced apart along the axial direction of the steering rack 1322. In this embodiment, the connecting members 1327b are screws, and the connecting holes are threaded holes that mate with the screw threads. The threaded holes on the steering rack 1322 are located on the portion of the steering rack 1322 excluding the rack segment 1322a. This connects the pull rod 1326 to the steering rack 1322. When the steering rack 1322 moves left and right along the width of the bracket 11, the pull rod 1326 moves left and right along with the steering rack 1322.

[0045] The following describes a right-turn operation. The driver rotates steering wheel 131 clockwise, causing steering column 1323b to rotate clockwise. This power is then transmitted to gear 1323a via first transmission shaft 1323c, second transmission shaft 1323d, third transmission shaft 1323e, and fourth transmission shaft 1323f. Gear 1323a then rotates clockwise, causing rack segment 1322a to move leftward under the transmission of gear 1323a. This in turn causes steering rack 1322 to move leftward. Since both left and right tie rods 1326 are connected to steering rack 1322, the left tie rod 1326 moves leftward, pushing the rear portion of left front wheel 151 to the left. The right tie rod 1326 also moves leftward, pushing the rear portion of right front wheel 151 to the left, ultimately causing ATV 100 to turn rightward. Conversely, the steering wheel 131 is rotated counterclockwise to make the all-terrain vehicle 100 turn left.

[0046] It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Obviously, the accompanying drawings are merely examples or embodiments of the present application. A person skilled in the art can also apply the present application to other similar situations based on these drawings without inventive effort. Furthermore, it is understandable that, although the work involved in this development process may be complex and lengthy, certain design, manufacturing, or production changes based on the technical content disclosed in this application are merely routine technical means for a person skilled in the art and should not be considered to constitute a deficiency in the disclosure of the present application.

[0048] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims appended to this application.

Claims

1. An all-terrain vehicle comprising: Frame; a body covering member connected to the vehicle frame; a steering system comprising a steering wheel and a steering component, the steering component being at least partially disposed on the vehicle frame, the steering component comprising a housing, a steering rack, and a transmission mechanism connected to the steering wheel, the housing defining an interior thereof forming a receiving cavity, the steering rack being located within the receiving cavity, the transmission mechanism being transmission-connected to the steering rack to drive the steering rack to move along the width direction of the vehicle frame; a traveling system, the traveling system being at least partially located below the vehicle frame, the traveling system comprising front wheels and rear wheels spaced apart along a length direction of the vehicle frame, the steering rack being transmission-connected to the front wheels; Characterized in that, the steering component also includes: A limiting member, wherein the limiting member is at least partially located in the accommodating cavity, the limiting member is fixed to the outer shell, the limiting member abuts against the steering rack, and the side of the limiting member facing the steering rack has a limiting portion for limiting the rotation of the steering rack around its own axis, and the limiting portion is configured as a groove body for the steering rack to pass through, the groove wall of the groove body abuts against the outer peripheral wall of the steering rack, and the end faces where the two abut are non-arc surfaces.

2. The all-terrain vehicle according to claim 1, characterized in that The shape of the groove wall of the groove body matches the shape of the corresponding position of the outer peripheral wall of the steering rack.

3. The all-terrain vehicle according to claim 2, characterized in that The limiting member is located on the peripheral side of the steering rack, and the groove body is a notch provided on the end surface of the limiting member on the side facing the steering rack.

4. The all-terrain vehicle according to claim 3, characterized in that The outer peripheral wall of the steering rack has a first plane area extending along its own axial direction, and the groove wall has a second plane area matching the first plane area.

5. The all-terrain vehicle according to claim 4, characterized in that There are at least two second planar regions, and the two second planar regions are spaced apart from each other along the circumference of the steering rack, and the planes where the two second planar regions are located intersect with each other.

6. The all-terrain vehicle according to claim 1, wherein: The transmission mechanism includes a gear, the steering wheel is transmission-connected to the gear, the steering rack includes a rack segment meshing with the gear, and the limiting portion is located on a side of the rack segment away from the gear.

7. The all-terrain vehicle according to claim 1, wherein: The steering component also includes a pull rod and a connecting mechanism. The pull rod is located outside the accommodating cavity and is connected to the front wheels. Each front wheel corresponds to a pull rod, and the two pull rods are connected by the connecting mechanism. A through hole is provided on the side wall of the outer shell, and at least part of the connecting mechanism passes through the through hole and is fixedly connected to the steering rack. The through hole extends along the axial direction of the steering rack.

8. The all-terrain vehicle according to claim 7, characterized in that The connecting mechanism includes a connecting rod, a connecting piece and a connecting plate connected to the connecting rod. The connecting rod and the connecting plate are both located outside the accommodating cavity. The two ends of the connecting rod are respectively connected to the pull rods on the corresponding sides. The connecting plate and the steering rack are respectively provided with connecting holes connected to the connecting piece, and part of the connecting piece passes through the through hole.

9. The all-terrain vehicle according to any one of claims 1 to 8, characterized in that The steering component further includes an elastic member, which abuts against a side of the limiting member away from the steering rack. The elastic member acts on the limiting member so that the limiting portion always tends to abut against the outer peripheral wall of the steering rack.

10. The all-terrain vehicle according to claim 9, characterized in that The housing also includes a blocking member, which is used to close the accommodating cavity. The accommodating cavity includes a steering rack mounting cavity and a limit member mounting cavity connected to the steering rack mounting cavity. The steering rack mounting cavity extends in a direction parallel to the axial direction of the steering rack. The steering rack is located in the steering rack mounting cavity. The limit member mounting cavity extends in a direction intersecting with the axial direction of the steering rack. The housing is provided with an installation opening for the limit member to be inserted into the limit member mounting cavity at a position corresponding to the limit member mounting cavity. The blocking member is arranged at the installation opening and blocks the installation opening. The elastic member is located between the blocking member and the limit member.

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