Linear bearing, axial telescopic adjustment assembly and vehicle

Abstract

The application discloses a linear bearing, an axial telescopic adjusting assembly and a vehicle. The linear bearing is used in the axial telescopic adjusting assembly of the vehicle. The linear bearing comprises two guide rail pieces and a rolling piece. The two guide rail pieces are slidingly connected. The two guide rail pieces are respectively used for being fixed on a base and a sliding plate of the axial telescopic adjusting assembly, so that the sliding plate is slidingly arranged on the base. The rolling piece is arranged between the two guide rail pieces. The rolling piece is configured to roll when the two guide rail pieces slide relative to each other, so as to reduce the friction between the two guide rail pieces. The linear bearing described above, by arranging the rolling piece between the two guide rail pieces, changes the sliding friction between the two guide rail pieces into rolling friction, reduces the friction, and can reduce the wear of parts, avoid the incompatibility caused by the larger gap of the parts due to wear, and reduce the generation of noise.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a linear bearing, an axial telescopic adjustment assembly and a vehicle. BACKGROUND

[0002] The vehicle includes a steering column for controlling the steering of the vehicle, and the steering column is provided with an axial telescopic adjustment structure. The existing axial telescopic adjustment mechanism usually adopts a spline sliding pair and a telescopic pipe structure for telescopic adjustment. During telescopic adjustment, a large sliding friction force needs to be overcome, and the sliding friction is prone to wear. After a long time, the wear will cause the gap between the parts to increase, and noise problems are likely to occur. SUMMARY

[0003] The present application provides a linear bearing, an axial telescopic adjustment assembly and a vehicle.

[0004] The linear bearing of the present application is used in an axial telescopic adjustment assembly of a vehicle, and comprises:

[0005] Two guide rail members are slidingly connected, and are respectively fixed to a base and a sliding plate of the axial telescopic adjustment assembly so that the sliding plate is slidingly arranged on the base;

[0006] A rolling member is arranged between the two guide rail members, and is configured to roll to reduce the friction between the two guide rail members when the two guide rail members slide relative to each other.

[0007] The linear bearing described above reduces the friction between the two guide rail members by arranging a rolling member between the two guide rail members, so that the sliding friction between the two guide rail members becomes rolling friction. In addition, the wear of the parts is reduced, the parts are prevented from being out of cooperation due to the wear of the parts, and the generation of noise is reduced.

[0008] In some embodiments, the guide rail member comprises a rectangular plate-shaped main body and a clamping jaw extending from both ends of the main body in the length direction, and the clamping jaw is used to fix the guide rail member to the base or the sliding plate.

[0009] In some embodiments, the main body comprises an inner surface for rolling of the rolling member and an outer surface opposite to the inner surface, the clamping jaw is in the shape of a rectangular sheet and is bent towards the outer surface, the clamping jaw comprises a clamping segment connected to the main body and a guide segment connected to one end of the clamping segment away from the main body, and the included angle between the clamping segment and the outer surface is smaller than the included angle between the guide segment and the outer surface.

[0010] In some embodiments, the width of the claw is smaller than the width of the body and is located in the middle of the width direction of the body. The guide rail also includes end flanges extending from both ends of the body in the length direction. The end flanges are located on both sides of the claw and are rectangular in shape. The end flanges are bent toward the inner surface.

[0011] In some embodiments, the guide rail includes a rectangular plate-shaped body and side flanges extending from both ends in the width direction of the body, wherein the side flanges of the two guide rails are slidably connected to allow the two guide rails to be slidably connected.

[0012] In some embodiments, the rolling element includes a rectangular plate-shaped rolling support and a cylindrical needle roller. The rolling support has a mounting opening and a roller disposed within the mounting opening. The needle roller is rotatably connected to the roller, and the rolling element rolls between the two guide rails via the needle roller.

[0013] In some embodiments, the rolling bracket has a notch formed from one end to the other end, and the rolling bracket engages with one end of the side flange to confine the rolling element between the two guide rails.

[0014] In some embodiments, a plurality of needle rollers are provided, and the plurality of needle rollers are arranged sequentially from one end of the rolling support to the other end of the rolling support.

[0015] In some embodiments, the rolling support has a chamfer on the side opposite to the notch.

[0016] An axial telescopic adjustment assembly according to an embodiment of the present invention is used in a vehicle, including the base and a linear bearing as described in any of the above embodiments, wherein the linear bearing is slidably connected to the base.

[0017] The aforementioned axial telescopic adjustment assembly, by setting a rolling element between the two guide rails, transforms the sliding friction between the two guide rails into rolling friction, reducing friction and also reducing wear on parts. This prevents parts from developing large gaps due to wear, which could lead to misfitting and reduce noise generation.

[0018] A vehicle according to an embodiment of the present invention includes the axial telescopic adjustment assembly described in the above embodiment.

[0019] The aforementioned vehicle, by setting a rolling element between two guide rails, transforms the sliding friction between the two guide rails into rolling friction, reducing friction and also reducing wear on parts. This prevents parts from developing large gaps due to wear, which could lead to misfitting and reduce noise generation.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the axial telescopic adjustment assembly according to an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of a portion of the linear bearing structure according to an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 Enlarged view of section A;

[0025] Figure 4 yes Figure 2 Partial cross-sectional view of BB in the middle;

[0026] Figure 5 yes Figure 2 Enlarged view of section C;

[0027] Figure 6 This is another structural schematic diagram of the linear bearing according to an embodiment of the present invention;

[0028] Figure 7 yes Figure 6 Cross-sectional view of DD in the middle;

[0029] Figure 8 This is a structural schematic diagram of a vehicle according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Linear bearing; 10. Guide rail component; 12. Main body; 13. Inner surface; 14. Outer surface; 15. Claw; 16. Claw section; 17. Guide section; 18. End flange; 19. Side flange; 20. Rolling element; 22. Rolling bracket; 23. Mounting port; 24. Roller; 25. Notch; 26. Needle roller; 30. Slide plate; 40. Base; 42. Groove; 46. Mounting part;

[0032] 200. Axial telescopic adjustment assembly;

[0033] 300. Chassis;

[0034] 1000, Vehicles. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0038] This disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] Please refer to Figure 1 and Figure 2An embodiment of the present invention discloses a linear bearing 100 used in an axial telescopic adjustment assembly 200 of a vehicle 1000. The linear bearing 100 includes two guide rails 10 and a rolling element 20. The two guide rails 10 are slidably connected. The two guide rails 10 are respectively fixed to a base 40 and a slide plate 30 of the axial telescopic adjustment assembly 200 so that the slide plate 30 is slidably disposed on the base 40. The rolling element 20 is disposed between the two guide rails 10. The rolling element 20 is configured to roll when the two guide rails 10 slide relative to each other to reduce the friction between the two guide rails 10.

[0040] The linear bearing 100 described above, by setting a rolling element 20 between the two guide rails 10, transforms the sliding friction between the two guide rails 10 into rolling friction, thereby reducing friction and reducing wear on parts. This also prevents parts from developing large gaps due to wear, which could lead to misfitting and reduce noise generation.

[0041] Specifically, in Figure 1 In the illustrated embodiment, two guide rails 10 and rolling elements 20 are provided on both sides of the linear bearing 100. The two guide rails 10 are slidably connected to each other. The axial telescopic adjustment assembly 200 is provided with a base 40. A sliding plate 30 is provided on the linear bearing 100. One of the two guide rails 10 can be fixedly mounted on the base 40, and the other guide rail 10 can be fixedly mounted on the sliding plate 30. In one embodiment, the two guide rails 10 can be fixed to the base 40 and the sliding plate 30 respectively. During the relative sliding of the two guide rails 10, the sliding plate 30 can slide relative to the base 40. A rolling element 20 can be provided between the two guide rails. In one embodiment, when the two guide rails 10 slide relative to each other, the rolling element 20 can roll between the two guide rails 10, thereby changing the sliding friction between the two guide rails 10 into rolling friction, reducing the friction between the two guide rails 10, and reducing wear on the parts. This prevents the parts from developing large gaps due to wear, which could lead to misfitting and reduce noise generation.

[0042] Please combine Figure 2 In some embodiments, the guide rail 10 includes a rectangular plate-shaped body 12 and claws 15 extending from both ends along the length of the body 12. The claws 15 are used to secure the guide rail 10 to the base 40 or the slide plate 30.

[0043] In this way, the guide rail 10 can be fixed by the claw 15, and the structure of the claw 15 is simple and easy to implement.

[0044] Specifically, in Figure 2In the illustrated embodiment, the guide rail 10 may include a body 12 and claws 15. The body 12 may be rectangular. The length direction of the body 12 may be represented by L. The claws 15 may extend away from the body 12 from both ends along the length direction L. Figure 1 In the base 40, a groove 42 is formed on one side. A claw 15 can be disposed in the groove 42, thereby fixing the guide rail 10 to the base 40. In one embodiment, the claw 15 can fix the guide rail 10 to the slide plate 30. That is to say, the structure of the claw 15 is simple and easy to implement. The guide rail 10 can be fixed by the claw 15 to prevent the two guide rails 10 from falling off during relative sliding.

[0045] Please combine Figure 1 , Figure 3 and Figure 4 In some embodiments, the body 12 includes an inner surface 13 for the rolling element 20 to roll and an outer surface 14 opposite to the inner surface 13. The gripper 15 is rectangular and bent towards the outer surface 14. The gripper 15 includes a gripping section 16 connected to the body 12 and a guide section 17 connected to the end of the gripping section 16 away from the body 12. The angle between the gripping section 16 and the outer surface 14 is smaller than the angle between the guide section 17 and the outer surface 14.

[0046] Thus, the guide rail 10 can be guided into the base 40 or the slide plate 30 by the guide section 17, and then locked onto the base 40 or the slide plate 30 by the clamping section 16.

[0047] Specifically, in Figure 4 In the illustrated embodiment, the body 12 may include an inner surface 13 and an outer surface 14. The inner surface 13 allows the rolling element 20 to roll on it. The outer surface 14 may be disposed on the side of the body 12 opposite to the inner surface 13. The gripper 15 may be rectangular and bendable toward the outer surface 14. The gripper 15 may include a gripping section 16 and a guiding section 17. One end of the gripping section 16 may be connected to the body 12. The guiding section 17 may be connected to the end of the gripping section 16 away from the body 12. Figure 4 In this embodiment, the angle between the gripping section 16 and the outer surface 14 can be represented by θ, and the angle between the guide section 17 and the outer surface 14 can be represented by β. In one embodiment, the angle θ between the gripping section 16 and the outer surface 14 can be smaller than the angle β between the guide section 17 and the outer surface 14, so that the guide section 17 can guide the gripping section 16 into the base 40 or the slide plate 30, and then the gripping section 16 can clamp the gripping section 16 onto the base 40 or the slide plate 30.

[0048] Additionally, the gripping segment 16 and the guide segment 17 can be chamfered. The chamfer can be represented by 'a'. A chamfer 'a' is formed between the gripping segment 16 and the guide segment 17. After the guide segment 17 is engaged with the base 40 or the slide plate 30, the chamfer 'a' allows the gripping segment 16 to be smoothly engaged with the base 40 or the slide plate 30.

[0049] Please combine Figure 3 In some embodiments, the width of the claw 15 is smaller than the width of the body 12 and is located in the middle of the width direction of the body 12. The guide rail 10 also includes end flanges 18 extending from both ends of the body 12 in the length direction. The end flanges 18 are located on both sides of the claw 15 and are rectangular in shape. The end flanges 18 are bent toward the inner surface 13.

[0050] In this way, the rolling element 20 can be limited to rolling within the two guide rails 10, preventing the rolling element 20 from disengaging from the two guide rails 10.

[0051] Specifically, in Figure 3 In the illustrated embodiment, the width of the claw 15 can be represented by d, the width of the body 12 can be represented by D, and the width direction of the body 12 can be represented by K. The width d of the claw 15 is smaller than the width D of the body 12. The claw 15 can be disposed in the middle of the width direction K of the body 12. The guide rail 10 also includes end flanges 18. The end flanges 18 can extend from both ends of the length direction L of the body 12. The end flanges 18 can be rectangular. The end flanges 18 can be disposed on both sides of the claw 15. The end flanges 18 can be bent toward the inner surface 13, thereby limiting the rolling element 20 to roll within the two guide rails 10 and preventing the rolling element 20 from disengaging from the two guide rails 10.

[0052] Please combine Figure 2 and Figure 3 In some embodiments, the guide rail 10 includes a rectangular plate-shaped body 12 and side flanges 19 extending from both ends of the body 12 in the width direction. The side flanges 19 of the two guide rails 10 are slidably connected to allow the two guide rails 10 to be slidably connected.

[0053] In this way, the two guide rails 10 can be slidably connected by the side flange 19, and the two guide rails 10 can be slidably connected along the length direction of the main body 12, so as to prevent the two guide rails 10 from separating from the width direction of the main body 12.

[0054] Specifically, in Figure 3In this design, the guide rail may include a main body 12 and side flanges 19. The main body 12 may be rectangular. The side flanges 19 may be formed at both ends of the main body 12 in the width direction and extend away from the main body 12 in the width direction. In one embodiment, the inner surfaces 13 of the two guide rail members 10 are disposed opposite to each other and cooperate with each other, and the side flanges 19 of the two guide rail members 10 are slidably connected, thereby allowing the two guide rail members 10 to be slidably connected along the length direction of the main body 12, preventing the two guide rail members 10 from disengaging from the width direction of the main body 12.

[0055] It should be noted that, in Figure 7 In the embodiment shown, one guide rail 10 is provided with a side flange 19, and the other guide rail 10 is not provided with a side flange 19. Alternatively, the side flange 19 of one guide rail 10 can cooperate with the body 12 of the other guide rail 10 to make the two guide rail 10 slide connected.

[0056] Please combine Figure 2 and Figure 5 In some embodiments, the rolling element 20 includes a rectangular plate-shaped rolling support 22 and cylindrical needle rollers 26. The rolling support 22 has a mounting opening 23 and a roller 24 disposed within the mounting opening 23. The needle rollers 26 are rotatably connected to the rollers 24. The rolling element 20 rolls between two guide rails 10 via the needle rollers 26.

[0057] In this way, the rolling element 20 can be rolled by the needle roller 26, which can change the sliding friction between the two guide rails 10 into rolling friction, thereby reducing friction and wear of parts.

[0058] Specifically, in Figure 5 In the illustrated embodiment, the rolling element 20 may include a rolling support 22 and a needle roller 26. The rolling support 22 may be rectangular. The needle roller 26 may be cylindrical. A mounting opening 23 may be formed on the surface of the rolling support 22. The mounting opening 23 may be rectangular. The rolling support 22 includes a roller 24. The roller 24 may be disposed within the mounting opening 23. The roller 24 may pass through the needle roller 26 and be rotatably connected to the needle roller 26. In one embodiment, the rolling element 20 is rotatably connected to the roller 24 of the rolling support 22 via the needle roller 26. When the two guide rails 10 slide relative to each other, the rolling element 20 can roll, thereby changing the sliding friction between the two guide rails 10 into rolling friction, thereby reducing friction and wear of parts.

[0059] Please combine Figure 5 , Figure 6 and Figure 7In some embodiments, the rolling bracket 22 has a notch 25 formed from one end of the rolling bracket 22 to the other end. The rolling bracket 22 engages with the notch 25 by one end of the side flange 19 to confine the rolling element 20 between the two guide rails 10.

[0060] In this way, the rolling element 20 can be further confined between the two guide rails 10, preventing the rolling element 20 from disengaging from the guide rails 10.

[0061] Specifically, in Figure 5 In the illustrated embodiment, notches 25 may be formed on both sides of the rolling support 22. The notches 25 may be formed from one end of the rolling support 22 to the other end. The notches 25 may be stepped. Figure 7 In the illustrated embodiment, the end of the side flange 19 away from the body 12 connected to the side flange 19 can be engaged with the notch 25. In one embodiment, the rolling bracket 22 can be confined between the two guide rails 10 by the end of the side flange 19 away from the body 12 connected to the side flange 19 being engaged with the notch 25, thereby preventing the rolling member 20 from disengaging from the guide rails 10.

[0062] Please combine Figure 2 and Figure 5 In some embodiments, multiple needle rollers 26 are provided. The multiple needle rollers 26 are arranged sequentially from one end of the rolling support 22 to the other end of the rolling support 22.

[0063] In this way, the rolling element 20 can be made to roll in a balanced manner by multiple needle rollers 26, thereby making the rolling element 20 roll more smoothly.

[0064] Specifically, in Figure 2 In the embodiment shown, the rolling support 22 is provided with a plurality of roller needles 26. The plurality of roller needles 26 can be arranged evenly from one end of the rolling support 22 to the other end, so that the rolling element 20 can roll in a balanced manner through the plurality of roller needles 26, thereby making the rolling element 20 roll more smoothly.

[0065] Please combine Figure 7 In some embodiments, the side of the rolling support 22 opposite to the notch 25 is chamfered.

[0066] This facilitates the assembly of the rolling element 20 with the guide rail 10, making it easier for the rolling element 20 to engage with the guide rail 10 and improving assembly efficiency.

[0067] Specifically, in Figure 7In the illustrated embodiment, the chamfer formed on the side of the rolling bracket 22 opposite to the notch 25 can be represented by b. In one embodiment, during the process of assembling the rolling element 20 into the guide rail 10, when the rolling element 20 is close to the end of the side flange 19 away from the body 12 connected to the side flange 19, the chamfer b formed on the side of the rolling bracket 22 opposite to the notch 25 can facilitate the opening of one end of the side flange 19, thereby facilitating the assembly of the rolling element 20 with the guide rail 10, making it easier for the rolling element 20 to be inserted into the guide rail 10, and improving assembly efficiency.

[0068] Please refer to Figure 1 An axial telescopic adjustment assembly 200 according to an embodiment of the present invention is used in a vehicle 1000. The axial telescopic adjustment assembly 200 includes a base 40 and a linear bearing 100 of any of the above embodiments. The linear bearing 100 is slidably connected to the base 40.

[0069] The aforementioned axial telescopic adjustment assembly 200, by setting a rolling element 20 between the two guide rails 10, transforms the sliding friction between the two guide rails 10 into rolling friction, thereby reducing friction and reducing wear on parts. This prevents parts from developing large gaps due to wear, which could lead to misfitting and reduce noise generation.

[0070] Specifically, the axial telescopic adjustment assembly 200 includes a base 40 and a linear bearing 100. The linear bearing 100 may be in the shape of a rectangular plate. A mounting portion 46 is also provided on the side of the base 40. The base 40 can be fixedly connected to the vehicle 1000 via the mounting portion 46. The linear bearing 100 can be slidably connected to the base 40 by providing a rolling element 20 between two guide rails 10, thereby converting the sliding friction between the two guide rails 10 into rolling friction, reducing friction, and also reducing wear on parts, preventing large gaps caused by wear that could lead to misfitting parts, and reducing noise generation.

[0071] Please refer to Figure 8 A vehicle 1000 according to an embodiment of the present invention includes the axial telescopic adjustment assembly 200 of the above embodiment.

[0072] The aforementioned vehicle 1000, by setting a rolling element 20 between two guide rails 10, transforms the sliding friction between the two guide rails 10 into rolling friction, thereby reducing friction and reducing wear on parts. This prevents parts from developing large gaps due to wear, which could lead to misfitting and reduce noise generation.

[0073] Specifically, vehicle 1000 includes, but is not limited to, gasoline-powered vehicles, electric vehicles, and natural gas-powered vehicles. Vehicle 1000 also includes a chassis 300. Axial telescopic adjustment assembly 200 may be disposed on chassis 300. In one embodiment, by providing a rolling element 20 between two guide rails 10 on the axial telescopic adjustment assembly 200 of vehicle 1000, the sliding friction between the two guide rails 10 can be transformed into rolling friction, reducing friction and reducing wear on parts. This prevents parts from developing large gaps due to wear, leading to misfitting and reducing noise generation.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An axial telescopic adjustment assembly for a vehicle steering column, characterized in that, It includes a skateboard, a base, and linear bearings; the skateboard is slidably mounted on the base, and the linear bearings are provided on both sides of the skateboard; The linear bearing includes: Two guide rail components are slidably connected and are respectively fixed to the base and the slide plate; A rolling element disposed between the two guide rails, the rolling element being configured to roll when the two guide rails slide relative to each other to reduce the friction between the two guide rails; The guide rail includes a rectangular plate-shaped main body and claws extending from both ends of the main body along its length direction. The claws are used to fix the guide rail to the base or the slide plate. The guide rail also includes end flanges extending from both ends of the main body along its length direction. The end flanges are used to limit the rolling element to roll within the two guide rails.

2. The axial telescopic adjustment assembly according to claim 1, characterized in that, The main body includes an inner surface for the rolling element to roll and an outer surface opposite to the inner surface. The claw is rectangular and bent toward the outer surface. The claw includes a gripping section connected to the main body and a guide section connected to the end of the gripping section away from the main body. The angle between the gripping section and the outer surface is smaller than the angle between the guide section and the outer surface.

3. The axial telescopic adjustment assembly according to claim 2, characterized in that, The width of the claw is smaller than the width of the main body and is located in the middle of the width direction of the main body. The end flanges are located on both sides of the claw and are rectangular in shape. The end flanges are bent toward the inner surface.

4. The axial telescopic adjustment assembly according to claim 1, characterized in that, The guide rail component includes a rectangular plate-shaped main body and side flanges extending from both ends in the width direction of the main body. The side flanges of the two guide rail components are slidably connected to allow the two guide rail components to be slidably connected.

5. The axial telescopic adjustment assembly according to claim 4, characterized in that, The rolling element includes a rectangular plate-shaped rolling bracket and a cylindrical needle roller. The rolling bracket has a mounting opening and a roller disposed in the mounting opening. The needle roller is rotatably connected to the roller, and the rolling element rolls between the two guide rails via the needle roller.

6. The axial telescopic adjustment assembly according to claim 5, characterized in that, The rolling bracket has a notch from one end to the other end, and the rolling bracket is engaged with the notch by one end of the side flange to confine the rolling element between the two guide rails.

7. The axial telescopic adjustment assembly according to claim 5, characterized in that, The rollers are provided in multiple ways, and the multiple rollers are arranged sequentially from one end of the rolling bracket to the other end of the rolling bracket.

8. The axial telescopic adjustment assembly according to claim 6, characterized in that, The side of the rolling bracket opposite to the notch has a chamfer.

9. A vehicle, characterized in that, Includes the axial telescopic adjustment assembly as described in any one of claims 1-8.

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