Steering intermediate shaft structure and vehicle

Abstract

The utility model provides a steering intermediate shaft structure and a vehicle. The steering intermediate shaft structure comprises an intermediate shaft, a first universal joint assembly and a second universal joint assembly. The intermediate shaft has opposite first and second ends. The first universal joint assembly comprises a first joint fork, a second joint fork and a first cross shaft, the first joint fork is fixed to the first end of the middle shaft, and the second joint fork is connected with the first joint fork through the first cross shaft; the second universal joint assembly comprises a third joint fork, a fourth joint fork and a cross-shaped shaft, the third joint fork is fixed at the second end of the middle shaft, and the fourth joint fork is connected with the third joint fork through the cross-shaped shaft; the first joint fork is provided with a first arrangement hole used for installing a first cross shaft, the third joint fork is provided with a second arrangement hole used for installing a second cross shaft, and the center line of the first arrangement hole is parallel to the center line of the second arrangement hole. The shaft portion of the first cross shaft attached to the first installation hole is parallel to the shaft portion of the second cross shaft attached to the second installation hole.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a steering intermediate shaft structure and a vehicle. Background Art

[0002] The steering intermediate shaft is the transmission mechanism that connects the steering column and steering gear. Many vehicle models are developed for both left-hand and right-hand drive (RHD) models to meet domestic and international market demands. Because the steering intermediate shafts for LHD and RHD models have different orientations, two sets of steering intermediate shafts must be manufactured, increasing development and management costs. Summary of the Invention

[0003] The present application provides a steering intermediate shaft structure, which includes:

[0004] an intermediate shaft having opposing first and second ends;

[0005] a first universal joint assembly, comprising a first yoke, a second yoke, and a first cross shaft, wherein the first yoke is fixed to the first end of the intermediate shaft, and the second yoke is connected to the first yoke via the first cross shaft;

[0006] a second universal joint assembly, comprising a third yoke, a fourth yoke, and a second cross shaft, wherein the third yoke is fixed to the second end of the intermediate shaft, and the fourth yoke is connected to the third yoke via the second cross shaft;

[0007] Among them, the first yoke is provided with a first setting hole for installing the first cross shaft, and the third yoke is provided with a second setting hole for installing the second cross shaft. The center line of the first setting hole is parallel to the center line of the second setting hole, so that the shaft portion of the first cross shaft installed in the first setting hole is parallel to the shaft portion of the second cross shaft installed in the second setting hole.

[0008] In some embodiments, the steering intermediate shaft structure includes:

[0009] The sealing sleeve is sleeved on the intermediate shaft and comprises an annular sleeve portion sleeved on the intermediate shaft. The annular sleeve portion has one or more layers of corrugated first sealing lips in contact with the intermediate shaft.

[0010] In some embodiments, the sealing sleeve includes a plate-shaped front panel mounting portion disposed on the periphery of the annular sleeve portion; wherein the axis of the annular sleeve portion forms a non-zero angle with the plane where the front panel mounting portion is located.

[0011] In some embodiments, the front panel mounting portion is annular and is provided with one or more layers of corrugated second sealing lips.

[0012] In some embodiments, the front panel mounting portion includes a sealing portion provided with the second sealing lip, and a plurality of mounting portions provided at an outer periphery of the sealing portion and spaced apart, and the mounting portions are provided with mounting holes.

[0013] In some embodiments, the cowl mounting portion includes three spaced apart mounting portions.

[0014] In some embodiments, the annular sleeve portion includes an annular sleeve body located in the inner ring and provided with the first sealing lip, and an annular outer cover portion connected to the annular sleeve body and located on the periphery of the annular sleeve body; the front enclosure mounting portion is connected to the annular outer cover portion;

[0015] Wherein, in the axial direction of the annular sleeve portion, the length dimension of the annular sleeve body is smaller than the length dimension of the annular outer cover portion.

[0016] In some embodiments, the second yoke includes a pipe string interface portion, an interface wall of the pipe string interface portion has a spline structure, and the spline structure is a special-shaped spline structure.

[0017] In some embodiments, a first fastening portion is provided on one side of the tubular column interface portion, and the first fastening portion is provided with a first fastening opening connected to the interface of the tubular column interface portion; the spline structure includes a spline body having a plurality of uniform gear portions and positioning grooves spaced apart on the spline body, the groove width of each positioning groove is greater than the width of the gear portion, and the plurality of positioning grooves are arranged asymmetrically on both sides of the first fastening opening.

[0018] In some embodiments, the fourth yoke includes a steering end interface portion, the interface of the steering end interface portion is special-shaped and has at least one positioning wall surface, and the positioning wall surface is flat;

[0019] A second fastening portion is provided on one side of the steering end interface portion, and the second fastening portion is provided with a second fastening opening connected to the interface of the steering end interface portion; the positioning wall surface includes a first positioning wall surface and a second positioning wall surface; the first positioning wall surface and the second positioning wall surface are symmetrically arranged on both sides of the second fastening opening.

[0020] The present application further provides a vehicle, which includes the steering intermediate shaft structure as described above.

[0021] The steering intermediate shaft structure provided in the embodiment of the present application is configured such that the first yoke is provided with a first setting hole for installing the first cross shaft, the third yoke is provided with a second setting hole for installing the second cross shaft, the center line of the first setting hole is parallel to the center line of the second setting hole, so that the shaft portion of the first cross shaft installed in the first setting hole is parallel to the shaft portion of the second cross shaft installed in the second setting hole, that is, the phase angle between the first yoke and the third yoke is set to zero degrees, so that the steering intermediate shaft structure can be applied to both left-hand drive and right-hand drive vehicles. Compared with the method of producing two different steering intermediate shaft structures for the same left-hand drive and right-hand drive vehicles, this method is beneficial to reducing development costs and management costs.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 A schematic structural diagram of a steering intermediate shaft structure provided in one embodiment of the present application;

[0025] Figure 2 A schematic diagram of the three-dimensional structure of a sealing sheath provided in one embodiment of the present application;

[0026] Figure 3 Based on Figure 2 The cross-sectional view taken along the section line AA' is shown;

[0027] Figure 4 A cross-sectional view of a second yoke provided in one embodiment of the present application from one perspective;

[0028] Figure 5 A cross-sectional view from one perspective of a fourth yoke provided in one embodiment of the present application. DETAILED DESCRIPTION

[0029] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture; if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for descriptive convenience and should not be understood as indicating or implying relative importance.

[0031] The following is a detailed description of the battery swap station according to the embodiment of the present application in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or be combined with each other.

[0032] like Figure 1 As shown, an embodiment of the present application provides a steering intermediate shaft structure 100, which includes an intermediate shaft 10, a first universal joint assembly 20, and a second universal joint assembly 30. The intermediate shaft 10 has a first end 101 and a second end 102 opposite to each other.

[0033] The first universal joint assembly 20 includes a first yoke 23 , a second yoke 21 and a first cross shaft 22 . The first yoke 23 is fixed to the first end 101 of the intermediate shaft 10 , and the second yoke 21 is connected to the first yoke 23 via the first cross shaft 22 .

[0034] The second universal joint assembly 30 includes a third yoke 31 , a fourth yoke 33 and a second cross shaft 32 . The third yoke 31 is fixed to the second end 102 of the intermediate shaft 10 . The fourth yoke 33 is connected to the third yoke 31 via the second cross shaft 32 .

[0035] The first yoke 23 is provided with a first mounting hole 1001 for mounting the first cross shaft 22, and the third yoke 31 is provided with a second mounting hole 1002 for mounting the second cross shaft 32. The center lines of the first mounting hole 1001 and the second mounting hole 1002 are parallel, so that the shaft portion of the first cross shaft 31 mounted in the first mounting hole 1001 and the shaft portion of the second cross shaft 32 mounted in the second mounting hole 1002 are parallel. As a result, the plane formed by the axis R1 of the second yoke 21 and the axis R3 of the intermediate shaft 10 is always coplanar with the plane formed by the axis R2 of the fourth yoke 33 and the axis R3 of the intermediate shaft 10.

[0036] The above-mentioned steering intermediate shaft structure 100 is configured such that the first yoke 23 is provided with a first setting hole 1001 for installing the first cross shaft 22, and the third yoke 31 is provided with a second setting hole 1002 for installing the second cross shaft 32, and the center line of the first setting hole 1001 is parallel to the center line of the second setting hole 1002, so that the axis of the first cross shaft 31 installed in the first setting hole 1001 is parallel to the axis of the second cross shaft 32 installed in the second setting hole 1002, that is, the phase angle between the second yoke 21 and the fourth yoke 33 is set to zero degrees, so that the steering intermediate shaft structure 100 can be applied to both left-hand drive and right-hand drive vehicles. Compared with the method of producing two different steering intermediate shaft structures for the same left-hand drive and right-hand drive vehicles, it is beneficial to reduce development costs and management costs.

[0037] In some embodiments, the intermediate shaft 10 includes an inner shaft 11 and an outer shaft 13. Part of the outer shaft is sleeved on the inner shaft 11, and the inner shaft 11 and the outer shaft 13 are able to slide relative to each other in the direction of the axis R3 of the intermediate shaft 10.

[0038] In some embodiments, the intermediate shaft 10 may include a dust cover 12 disposed between the outer shaft 13 and the inner shaft 11 to prevent dust from entering and affecting the relative sliding between the inner shaft 11 and the outer shaft 13 .

[0039] In some embodiments, the first yoke 23 includes a pipe interface portion 231 and a connecting portion 232 disposed on the pipe interface portion 231 . The second yoke 21 includes a pipe interface portion 211 and a connecting portion 212 disposed on the pipe interface portion 211 .

[0040] Accordingly, the connecting portion 232 of the first yoke 23 and the connecting portion 212 of the second yoke 21 can be riveted together by the first cross shaft 22. The inner shaft 11 can be pressed into the interface of the pipe column interface portion 231 of the first yoke 23 by an interference fit and then fixed by welding.

[0041] like Figure 1 As shown, the first yoke 23 may include two opposite connecting parts 232, each of which is provided with a first setting hole 1001. The center lines of the first setting holes 1001 of the two connecting parts 232 are collinear. The center line of the first setting hole 1001 may be as follows: Figure 1 The center line passes through the center point O1 of the first setting hole 1001.

[0042] In some embodiments, the third yoke 31 includes a column interface portion 311 and a connecting portion 312 disposed on the column interface portion 311 . The fourth yoke 33 includes a steering end interface portion 331 and a connecting portion 332 disposed on the steering end interface portion 331 .

[0043] Accordingly, the connecting portion 312 of the third yoke 31 and the connecting portion 332 of the fourth yoke 33 can be riveted together by the second cross shaft 32. The outer shaft 13 can be pressed into the interface of the pipe column interface portion 311 of the third yoke 31 in a hard fit manner and fixed by welding.

[0044] like Figure 1 As shown, the third yoke 31 may include two opposite connecting parts 312, each of which is provided with a second setting hole 1002. The center lines of the second setting holes 1002 of the two connecting parts 312 are collinear. The center line of the second setting hole 1002 may be as follows: Figure 1 The center line passes through the center point O2 of the second setting hole 1002.

[0045] In some embodiments, the first yoke 23 , the second yoke 21 , the third yoke 31 , and the fourth yoke 33 may all be formed by a forging process.

[0046] Combine Figure 2 and Figure 3 As shown, in some embodiments, the steering intermediate shaft structure 100 includes a sealing sleeve 40. The sealing sleeve 40 is sleeved on the intermediate shaft 10. The sealing sleeve 40 includes an annular sleeve portion 41 sleeved on the intermediate shaft 10. The annular sleeve portion 41 has one or more layers of corrugated first sealing lips 4111 in contact with the intermediate shaft 10. This ensures a sealing effect while ensuring NVH (Noise, Vibration, Harshness) performance, while minimizing wear on the sleeve structure during intermediate shaft rotation.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments, the annular sleeve portion 41 includes two layers of first sealing lips 4111. In other embodiments, the annular sleeve portion may also be provided with one or more layers of first sealing lips 4111.

[0048] In some embodiments, a first sealing lip 4111 can be a double lip formed by double layers of folds. Of course, the first sealing lip can also be a lip with a single layer of folds or multiple layers of folds.

[0049] Compared with the method of setting a single layer of first sealing lips, the annular sleeve portion 41 includes two layers of first sealing lips 4111, which can better ensure the NVH performance and further ensure that the sleeve structure is worn as little as possible during the rotation of the intermediate shaft. Compared with other multiple layers of first sealing lips, it can also better ensure the stability of the annular sleeve portion.

[0050] like Figure 2 and Figure 3 As shown, in some embodiments, the annular sleeve portion 41 includes an annular sleeve body 411 located on the inner circle and provided with the first sealing lip 4111 , and an annular outer cover portion 412 connected to the annular sleeve body 411 and located on the periphery of the annular sleeve body 411 .

[0051] Among them, along the axis r1 direction of the annular sleeve portion 41, the length dimension of the annular sleeve body 411 is smaller than the length dimension of the annular outer cover portion 412, so that the annular outer cover portion 412 can cover the annular sleeve body 411 inside, which is beneficial to maintaining the beauty of the annular sleeve portion 41 and protecting the annular sleeve body 411.

[0052] In some embodiments, the sealing sheath 40 includes a plate-shaped front panel mounting portion 42 disposed on the periphery of the annular sleeve portion 41. The front panel mounting portion 42 is connected to the annular outer cover portion 412. The axis r1 of the annular sleeve portion 41 is aligned with the plane where the front panel mounting portion 42 is located (e.g., Figure 3 The vertical dotted line S1S2 is Figure 3 The plane of the paper shown) is at a non-zero angle.

[0053] The dash mounting portion 42 is used to be mounted on the dash panel of the vehicle body. The dash panel of the vehicle body has a corresponding through hole, through which the intermediate shaft 10 passes. The dash mounting portion 42 is mounted at the through hole on the dash panel of the vehicle body and can seal the through hole.

[0054] In some embodiments, the front panel mounting portion 42 is annular and is provided with one or more layers of corrugated second sealing lips 4211, which is beneficial to ensuring NVH performance and can also well ensure the sealing of the location where the front panel mounting portion 42 is installed on the front panel of the vehicle body.

[0055] like Figure 3 As shown, the front wall mounting portion 42 includes three layers of pleated second sealing lips 4211, that is, a three-lip structure, which is conducive to ensuring that the lips of the front wall mounting portion 42 are deformed and tightly sealed against the front wall panel of the vehicle body after installation.

[0056] Of course, in some other embodiments, the front panel mounting portion 42 may also include one layer, two layers or other multiple layers of the second sealing lip.

[0057] In some embodiments, the front enclosure mounting portion 42 includes a sealing portion 421 provided with the second sealing lip 4211 , and a plurality of mounting portions provided at an outer periphery of the sealing portion 421 and spaced apart from each other, wherein the mounting portions are provided with mounting holes 4201 .

[0058] Correspondingly, a plurality of corresponding mounting bosses, such as mounting bosses with threads, may be provided on the front panel of the vehicle body to respectively pass through the mounting holes 4201 of each mounting portion, and then corresponding nuts may be used for assembly and fixation.

[0059] In some embodiments, the front panel mounting portion 42 includes three spaced apart mounting portions 422 , 423 , and 424 , which can ensure that the front panel mounting portion 42 is fixedly installed without having to provide a large number of front panel mounting portions, thereby facilitating cost control.

[0060] In some other embodiments, the front enclosure mounting portion 42 may include or may include other multiple mounting portions.

[0061] It is understood that in other embodiments, the front wall mounting portion may also be provided with mounting bosses, and corresponding mounting holes may be provided on the front wall panel of the vehicle body. Compared with this approach, the mounting holes provided on the front wall mounting portion 42 are more conducive to sealing the front wall panel of the vehicle body.

[0062] In some embodiments, the sealing sheath 40 is made of rubber.

[0063] In some embodiments, in the second fork 21 , the interface wall of the pipe string interface portion 211 has a spline structure 2110 , and the spline structure 2110 is a special-shaped spline structure.

[0064] like Figure 4 As shown, in some embodiments, a first fastening portion 213 is provided on one side of the pipe string interface portion 211. The first fastening portion 213 defines a first fastening opening 202 that communicates with the interface 201 of the pipe string interface portion 211. The spline structure 2110 includes a spline body having a plurality of uniform gear portions and positioning grooves spaced apart in the spline body. The width of each positioning groove is greater than the width of the gear portion. The plurality of positioning grooves are asymmetrically arranged on both sides of the first fastening opening 202.

[0065] Figure 4 As shown, the cross-section of the interface 201 is circular. The multiple positioning grooves mentioned here are asymmetrically arranged on both sides of the first fastening opening 202, which can be understood as the multiple positioning grooves being asymmetrically arranged on both sides of the line r2 connecting the centroid of the first fastening opening 202 and the center of the interface 201.

[0066] like Figure 4 As shown, in some embodiments, the spline structure 2110 includes three positioning grooves. The width of each positioning groove can be equal or different. The width of the positioning groove can be understood as the size along the circumference of the interface 201.

[0067] The column interface portion 211 of the second yoke 21 can be used to connect to the steering column below the vehicle steering wheel. The setting of the positioning groove can play a positioning role in the connection between the steering intermediate shaft structure 100 and the steering column core shaft, ensuring a fixed angle and consistency of assembly.

[0068] In some embodiments, the steering intermediate shaft structure 100 may include fastening bolts. The first fastening portion 213 may be provided with corresponding mounting holes 203 and 204 on either side of the first fastening opening 202. After the pipe column is connected to the interface 201, the fastening bolts may be provided in the mounting holes 203 and 204 for fastening.

[0069] The fastening bolts may be coated with anti-loosening glue to ensure that torque decay does not occur after fastening.

[0070] In some embodiments, in the fourth fork 33 , the interface 301 of the steering end interface portion 331 is irregularly shaped and has at least one positioning wall surface, and the positioning wall surface is flat.

[0071] like Figure 5 As shown, in some embodiments, a second fastening portion 333 is provided on one side of the steering end interface portion 331, and the second fastening portion 333 is provided with a second fastening opening 302 connected to the interface 301 of the steering end interface portion 331; the positioning walls 3111, 3112 include a first positioning wall 3111 and a second positioning wall 3112; the first positioning wall 3111 and the second positioning wall 3112 are symmetrically arranged on both sides of the second fastening opening 302.

[0072] like Figure 5 The cross-section of the interface 301 is circular. The first positioning wall 3111 and the second positioning wall 3112 are symmetrically arranged on either side of the second fastening opening 302. This means that the first positioning wall 3111 and the second positioning wall 3112 are symmetrically arranged on either side of a line r3 connecting the centroid of the second fastening opening 302 and the center of the interface 301.

[0073] It should be noted that the steering end interface portion 331 may also have one or more positioning walls.

[0074] In some other embodiments, the positioning walls of the steering end interface portion may also be asymmetrically arranged on both sides of the second fastening opening 302 .

[0075] The steering end interface portion 331 can be used to connect with the steering gear input shaft. The setting of the positioning wall in the steering end interface portion 331 can play a role in positioning when connected with the steering gear input shaft, ensuring that the steering intermediate shaft structure 100 is fixed and consistent in angle after assembly.

[0076] In some embodiments, the steering intermediate shaft structure 100 may include fastening bolts 50. The second fastening portion 333 may be provided with corresponding mounting holes 303 and 304 on either side of the second fastening opening 302. After the steering input shaft is connected to the interface 301, it can be fastened using fastening bolts 50 provided in the mounting holes 303 and 304.

[0077] The fastening bolts 50 may be coated with anti-loosening glue to ensure that torque decay does not occur after fastening.

[0078] The present application further provides a vehicle, which includes the above-mentioned steering intermediate shaft structure 100 or a similar steering intermediate shaft structure.

[0079] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A steering intermediate shaft structure, characterized in that: The steering intermediate shaft structure (100) comprises: an intermediate shaft (10) having a first end (101) and a second end (102) opposite to each other; a first universal joint assembly (20), comprising a first yoke (23), a second yoke (21) and a first cross shaft (22), wherein the first yoke (23) is fixed to the first end (101) of the intermediate shaft (10), and the second yoke (21) is connected to the first yoke (23) via the first cross shaft (22); a second universal joint assembly (30), comprising a third yoke (31), a fourth yoke (33) and a second cross shaft (32), wherein the third yoke (31) is fixed to the second end (102) of the intermediate shaft (10), and the fourth yoke (33) is connected to the third yoke (31) via the second cross shaft (32); The first yoke (23) is provided with a first setting hole (1001) for installing the first cross shaft (22), and the third yoke (31) is provided with a second setting hole (1002) for installing the second cross shaft (32). The center line of the first setting hole (1001) and the center line of the second setting hole (1002) are parallel, so that the shaft portion of the first cross shaft (22) installed in the first setting hole (1001) is parallel to the shaft portion of the second cross shaft (32) installed in the second setting hole (1002).

2. The steering intermediate shaft structure according to claim 1, characterized in that: The steering intermediate shaft structure includes: The sealing sleeve (40) is sleeved on the intermediate shaft (10), and comprises an annular sleeve portion (41) sleeved on the intermediate shaft (10), wherein the annular sleeve portion (41) has one or more layers of pleated first sealing lips (4111) in contact with the intermediate shaft (10).

3. The steering intermediate shaft structure according to claim 2, characterized in that: The sealing sleeve (40) includes a plate-shaped front enclosure mounting portion (42) disposed on the periphery of the annular enclosure portion (41); wherein the axis of the annular enclosure portion (41) forms a non-zero angle with the plane where the front enclosure mounting portion (42) is located.

4. The steering intermediate shaft structure according to claim 3, characterized in that: The front enclosure mounting portion (42) is annular and is provided with one or more layers of pleated second sealing lips (4211).

5. The steering intermediate shaft structure according to claim 4, characterized in that: The front enclosure mounting portion (42) includes a sealing portion (421) provided with the second sealing lip (4211), and a plurality of mounting portions (422, 423, 424) provided at intervals around the sealing portion (421), wherein the mounting portions (422, 423, 424) are provided with mounting holes (4201).

6. The steering intermediate shaft structure according to claim 5, characterized in that: The front enclosure mounting portion (42) includes three spaced mounting portions (422, 423, 424).

7. The steering intermediate shaft structure according to claim 3, characterized in that: The annular sleeve portion (41) includes an annular sleeve body (411) located in the inner ring and provided with the first sealing lip (4111), and an annular outer cover portion (412) connected to the annular sleeve body (411) and located on the periphery of the annular sleeve body (411); the front enclosure mounting portion (42) is connected to the annular outer cover portion (412); Wherein, along the axial direction of the annular sleeve portion (41), the length dimension of the annular sleeve body (411) is smaller than the length dimension of the annular outer cover portion (412).

8. The steering intermediate shaft structure according to claim 1, characterized in that: The second yoke (21) comprises a pipe string interface portion (211), an interface wall of the pipe string interface portion (211) has a spline structure (2110), and the spline structure (2110) is a special-shaped spline structure.

9. The steering intermediate shaft structure according to claim 8, characterized in that: A first fastening portion (213) is provided on one side of the tubular column interface portion (211), and the first fastening portion (213) is provided with a first fastening opening (202) communicating with the interface (201) of the tubular column interface portion (211); the spline structure (2110) comprises a spline body having a plurality of uniform gear portions and positioning grooves spaced apart on the spline body, the groove width of each positioning groove being greater than the width of the gear portion, and the plurality of positioning grooves being asymmetrically arranged on both sides of the first fastening opening (202).

10. The steering intermediate shaft structure according to claim 1, characterized in that: The fourth fork (33) includes a steering end interface portion (331), the interface (301) of the steering end interface portion (331) is irregularly shaped and has at least one positioning wall surface (3111, 3112), and the positioning wall surface (3111, 3112) is flat. A second fastening portion (333) is provided on one side of the steering end interface portion (331), and the second fastening portion (333) is provided with a second fastening opening (302) communicating with the interface (301) of the steering end interface portion (331); the positioning walls (3111, 3112) include a first positioning wall (3111) and a second positioning wall (3112); the first positioning wall (3111) and the second positioning wall (3112) are symmetrically arranged on both sides of the second fastening opening (302).

11. A vehicle, characterized in that: The invention comprises the steering intermediate shaft structure according to any one of claims 1 to 10.

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