Steering column and vehicle

Abstract

The utility model discloses a steering column and vehicle. Steering column, include: guide cylinder, inner tube, fixed support and tear strip, the inner tube is contained in the guide cylinder, the inner tube content holds steering axle, the fixed support is connected with the fixed connection of guide cylinder, tear strip one part is connected with the inner tube fixedly, another part is riveted with the inner tube, is provided with tear line on tear strip. The utility model discloses on the inner tube of steering column, is installed tear strip, is provided with tear line on tear strip, thereby when the vehicle collision, through tear line makes tear strip deformation and absorbs the energy when the vehicle collision, because only need to set up tear line on tear strip, therefore cost reduction. The utility model discloses through the tear strip of setting up tear line, still can satisfy the collapse demand, guarantees the steady collapse while reducing the cost.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-related technology, and in particular to a steering column and a vehicle. Background Technology

[0002] Cost reduction is a perpetual core issue for vehicle parts companies in market competition, especially given the vehicle industry's trend towards platform and modular design, and the increasing price sensitivity of consumers. The importance of cost control has been further amplified in this context. The cost reduction logic of vehicle parts companies is not simply about cutting expenses, but a systematic project that runs through the entire product life cycle while ensuring product quality and performance. For example, cost reduction can be achieved through the standardization and simplification of parts and the optimization of materials and processes.

[0003] The steering column of a vehicle is used to connect the steering wheel. To absorb impact forces during a collision, existing technology incorporates a crumple zone on the steering column. This crumple zone deforms longitudinally along the steering column during a vehicle collision, providing energy absorption through this deformation.

[0004] However, existing technologies, such as Chinese patent CN108025759A, have excessively high manufacturing costs for the crumple zone components of vehicle steering columns. Utility Model Content

[0005] Therefore, it is necessary to provide a steering column and vehicle to address the technical problem of excessively high cost of existing collapsible components.

[0006] This utility model provides a steering column, including a guide cylinder, an inner cylinder, a fixed bracket, and a tear strip. The inner cylinder is housed within the guide cylinder, and a steering shaft is placed inside the inner cylinder. The fixed bracket is fixedly connected to the guide cylinder. A portion of the tear strip is fixedly connected to the inner cylinder, and another portion is riveted to the inner cylinder. A tear line is provided on the tear strip.

[0007] Furthermore, it also includes: a first support block, a second support block, and a rivet. The tear strip includes a first part, a second part, and a bent part. The first part and the second part are connected through the bent part. The second part is fixedly connected to the inner cylinder. The first support block and the second support block are disposed at the bottom of the first part. The rivet passes through the first part and the first support block and is connected to the inner cylinder. The second support block is fixedly connected to the inner cylinder and abuts against the second part. A tear line is provided on the side of the second part facing the inner cylinder.

[0008] Furthermore, the second part of the tear strip is provided with a tear strip fixing groove, and the inner cylinder is fixedly connected with a hook frame, which is inserted into the tear strip fixing groove.

[0009] Furthermore, a tear opening is provided at the connection between the second part of the tear strip and the bend of the tear strip.

[0010] Furthermore, a tear strip elastic rib is provided in the middle of the first part of the tear strip, and wings that cooperate with the tear strip elastic rib are provided on both sides of the first support block, with the tear strip elastic rib inserted into the bottom of the wings.

[0011] Furthermore, the length of the first part of the tear strip is greater than the length of the second part of the tear strip. The rivet passes through the end of the first part of the tear strip away from the bend of the tear strip. The first support block has an accommodating cavity. The second support block is accommodated in the accommodating cavity. The end of the second support block away from the rivet is fixedly connected to the inner cylinder and abuts against the second part of the tear strip.

[0012] Furthermore, it also includes a handle, a toothed stone, a clamping bolt, and a passive cam. One end of the clamping bolt is connected to the handle, and the other end is sequentially inserted into the passive cam and the fixing bracket. The first part of the tear strip has multiple toothed grooves that cooperate with the toothed stone. The toothed stone is connected to the passive cam. The handle rotates in a first direction to drive the toothed stone to engage with the toothed grooves, and rotates in a second direction to drive the toothed stone to separate from the toothed grooves. The first direction is opposite to the second direction.

[0013] Furthermore, the other end of the clamping bolt passes through the fixed bracket and is connected to the bearing and nut in sequence. A clamping spring is provided between the side wall of the fixed bracket and the bearing, and the clamping spring has multiple protrusions on the surface of the fixed bracket facing the fixed bracket.

[0014] Furthermore, a housing groove is provided on the guide cylinder, and a limiting block that is fixedly connected to the inner cylinder is placed inside the housing groove.

[0015] This utility model provides a vehicle, including a body and a steering column as described above, wherein the fixed bracket is fixedly connected to the body and the steering shaft is connected to the steering wheel.

[0016] This invention features a tear strip (BTS, Bearing & Tearing Strap) installed on the inner cylinder of the steering column. The tear strip has tear lines, allowing it to deform and absorb energy during a collision. Since only tear lines are needed on the tear strip, costs are reduced. This invention, by using a tear strip with tear lines, reduces costs while still meeting crumple zone requirements and ensuring smooth crumple. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a steering column according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a steering column collision according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the tear strip and inner cylinder according to an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating another embodiment of the present invention, showing another fit between the tear strip and the inner cylinder; Figure 5 for Figure 4 CC cross-section; Figure 6 This is a schematic diagram showing the cooperation between the tear strip and the first and second support blocks in another embodiment of the present invention; Figure 7 This is a schematic diagram illustrating another embodiment of the present invention, showing the further engagement of the tear strip and the inner cylinder. Figure 8 This is a schematic diagram illustrating the interaction between the tear strip, the toothed stone, and the handle in another embodiment of the present invention; Figure 9 for Figure 8 A magnified view of a portion of the image; Figure 10 This is a schematic diagram illustrating another embodiment of the tear strip and another mating of the toothed stone; Figure 11 This is a cross-sectional view of the tear band and the toothed stone in another embodiment of the present invention when they have not collapsed; Figure 12 This is a cross-sectional view of the tear band and the tooth stone during collapse, according to another embodiment of the present invention. Figure 13 This is a schematic diagram of another embodiment of the present invention showing the tear strip and the toothed stone in further cooperation; Figure 14 This is an enlarged schematic diagram of the tear strip and the toothed stone in another embodiment of the present invention; Figure 15 This is a cross-sectional view of a steering column according to another embodiment of the present invention; Figure 16 A schematic diagram of a housing groove provided for a guide cylinder according to another embodiment of this utility model; Figure 17 for Figure 16 A magnified view of a portion of the image; Figure 18 for Figure 16 DD cross-section; Figure 19 This is a schematic diagram of the clamping spring installation according to another embodiment of the present invention; Figure 20 for Figure 19 A magnified view of a portion of the image; Figure 21 This is a schematic diagram of a clamping spring according to another embodiment of the present invention.

[0018] Marker description 1. Guide cylinder; 101. Housing groove; 102. Limiting block; 2. Inner cylinder; 21. Steering shaft; 22. Hook frame; 23. Inner cylinder fixing groove; 3. Fixing bracket; 4. Tear strip; 41. Tear strip first part; 411. Tear strip elastic rib; 412. Tooth groove; 42. Tear strip second part; 421. Tear strip fixing groove; 43. Tear strip bending part; 44. Tear line; 45. Tear opening; 5. First support block; 51. Wing; 52. Accommodating cavity; 6. Second support block; 61. Second support block end; 611. Barb; 7. Rivet; 8. Handle; 9. Tooth stone; 10. Clamping bolt; 11. Passive cam; 12. Bearing; 13. Nut; 14. Clamping spring; 141. First protrusion; 142. Second protrusion; 143. Anti-rotation part; 15. Fork. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figures 1 to 3 The figure shown is a steering column according to an embodiment of the present invention, including a guide cylinder 1, an inner cylinder 2, a fixed bracket 3 and a tear strip 4. The inner cylinder 2 is housed in the guide cylinder 1 and a steering shaft 21 is placed inside the inner cylinder 2. The fixed bracket 3 is fixedly connected to the guide cylinder 1. Part of the tear strip 4 is fixedly connected to the inner cylinder 2 and the other part is riveted to the inner cylinder 2. A tear line 44 is provided on the tear strip 4.

[0021] Specifically, the steering column is used in motor vehicles. The steering column includes a guide cylinder 1, an inner cylinder 2, a fixing bracket 3, and a tear strip 4. The inner cylinder 2 also houses a steering shaft 21, which is supported within the inner cylinder 2 in a manner rotatable about its longitudinal axis. The inner cylinder 2 is accommodated within the guide cylinder 1 in a longitudinally adjustable manner. The steering column also includes a clamping device with a clamping bolt 10, which is rotatably supported on the guide cylinder 1 and can be selectively placed in a fixed or loosened position by rotation. In the fixed position, the inner cylinder 2 is fixed relative to the guide cylinder 1; in the loosened position, the inner cylinder 2 is adjustable relative to the guide cylinder 1. It should be noted that, as... Figure 2 As shown, in this technical solution, the first end of all components is the end near the steering wheel end of the steering shaft 21, and the second end of all components is the end near the end where the steering column connects to the fork 15.

[0022] The collapsible assembly of this embodiment includes at least a tear strip 4, which is disposed radially between the guide cylinder 1 and the inner cylinder 2 of the steering column. The tear strip 4 is formed by a stamping process. A portion of the tear strip 4 is fixedly connected to the inner cylinder 2, and the other portion is riveted to the inner cylinder 2 by rivets 7. The rivets 7 are shearable rivets.

[0023] In some embodiments, the tear strip 4 is formed by a stamping process.

[0024] Specifically, in existing collapse assemblies, some components are manufactured using powder metallurgy, resulting in relatively high processing costs. In contrast, this embodiment utilizes a stamping process to form the tear strip 4, significantly reducing costs. Specifically, this reduces material waste, scrap, and raw material costs; it also simplifies the process, reduces rework costs, and lowers labor costs.

[0025] In some embodiments, when the steering column is subjected to an impact force exceeding a threshold and the inner cylinder moves relative to the guide cylinder, a portion of the tear strip 4 is at least partially torn to absorb the impact force.

[0026] like Figure 2 As shown, the process of the crumple zone collapsing is as follows: A collision occurs in direction A. The driver presses against the steering wheel, causing the steering column to move towards the front of the vehicle along the crumple direction B. The fixed bracket 3 is fixedly connected to the vehicle body. Since the fixed bracket 3 is fixedly connected to the guide cylinder 1, neither the fixed bracket 3 nor the guide cylinder 1 moves during the crumple process. In the fixed position, the handle 8 is closed, and the inner cylinder 2 cannot move relative to the guide cylinder 1. However, due to the relatively large crumple force generated by the collision exceeding the threshold, the rivet 7 breaks, and the inner cylinder 2 moves relative to the guide cylinder 1 along the crumple direction B. The tear strip 4 tears along the tear line 44 to absorb energy.

[0027] This invention features a tear strip (BTS, Bearing & Tearing Strap) installed on the inner cylinder of the steering column. The tear strip has tear lines, allowing it to deform and absorb energy during a collision. Since only tear lines are needed on the tear strip, costs are reduced. This invention, by using a tear strip with tear lines, reduces costs while still meeting crumple zone requirements and ensuring smooth crumple.

[0028] like Figures 1 to 21 As shown, another embodiment of the present invention provides a steering column, including a guide cylinder 1, an inner cylinder 2, a fixed bracket 3, a tear strip 4, a first support block 5, a second support block 6, a rivet 7, a handle 8, a toothed stone 9, a clamping bolt 10, and a passive cam 11. The inner cylinder 2 is housed within the guide cylinder 1, and a steering shaft 21 is placed inside the inner cylinder 2. The fixed bracket 3 is fixedly connected to the guide cylinder 1. Part of the tear strip 4 is fixedly connected to the inner cylinder 2, and the other part is riveted to the inner cylinder 2. The tear strip 4 includes a first tear strip part 41, a second tear strip part 42, and a bend in the tear strip part 43. The first tear strip part 41 and the second tear strip part 42 are connected by the bend in the tear strip part 43. The second tear strip part 42 is fixedly connected to the inner cylinder 2. A first support block 5 and a second support block 6 are disposed at the bottom of the first tear strip part 41. A rivet 7 passes through the first tear strip part 41 and the first support block 5 and is then connected to the inner cylinder 2. The second support block 6 is fixedly connected to the inner cylinder 2 and abuts against the second tear strip part 42. A tear line 44 is provided on the side of the second tear strip part 42 facing the inner cylinder 2. A tear opening 45 is provided at the connection between the second tear strip part 42 and the bend in the tear strip part 43. The middle of the first tear strip part 41... The first support block 5 is provided with a tear strip elastic rib 411. Wings 51 that cooperate with the tear strip elastic rib 411 are provided on both sides of the first support block 5. The tear strip elastic rib 411 is inserted into the bottom of the wing 51. The length of the first part 41 of the tear strip is greater than the length of the second part 42 of the tear strip. The rivet 7 passes through the end of the first part 41 of the tear strip away from the bend of the tear strip 43. The first support block 5 has an accommodating cavity 52. ​​The second support block 6 is accommodated in the accommodating cavity 52. ​​The end of the second support block 6 away from the rivet 7 is fixedly connected to the inner cylinder 2 and abuts against the second part 42 of the tear strip. The second part 42 of the tear strip has a tear strip fixing groove 421. The inner cylinder 2 is fixedly connected with a hook 22. The hook 22 is inserted into the tear strip fixing groove 421. One end of the clamping bolt 10 is connected to the handle 8, and the other end is inserted into the passive cam 11 and the fixed bracket 3 in sequence. The first part 41 of the tear strip is provided with multiple toothed grooves 412 that cooperate with the toothed stone 9. The toothed stone 9 is connected to the passive cam 11. When the handle 8 is rotated in the first direction, it drives the toothed stone 9 to engage with the toothed groove 412. When the handle 8 is rotated in the second direction, it drives the toothed stone 9 to separate from the toothed groove 412. The first direction is opposite to the second direction. The other end of the clamping bolt 10 passes through the fixed bracket 3 and is connected to the bearing 12 and the nut 13 in sequence. A clamping spring 14 is provided between the side wall of the fixed bracket 3 and the bearing 12, and multiple protrusions are provided on the surface of the clamping spring 14 facing the fixed bracket 3. The guide cylinder 1 has a housing groove 101, and the housing groove 101 contains a limiting block 102 that is fixedly connected to the inner cylinder 2.

[0029] Specifically, such as Figures 1 to 15 As shown, the collapsible assembly is arranged radially between the guide cylinder 1 and the inner cylinder 2 of the steering column. It includes: a shearable rivet 7, a first support block 5, a second support block 6, and a tear strip 4. The tear strip 4 includes a first tear strip portion 41, a second tear strip portion 42, and a bend in the tear strip portion 43. The first tear strip portion 41 and the second tear strip portion 42 are connected by the bend in the tear strip portion 43, and there is a certain gap between them. Two tear openings 45 are provided on both sides of the transition area connecting the second tear strip portion 42 and the bend in the tear strip portion 43. Depending on actual needs, the two tear openings 45 can be symmetrically set to the same length or asymmetrically set, i.e., one long and one short. Two tear lines 44, which do not penetrate the second tear strip portion 42, are provided on the side of the second tear strip portion 42 facing the inner cylinder 2. The tear lines 44 extend along the axial direction of the steering column. Similarly, depending on actual needs, the two tear lines 44 can be set to symmetrically equal depth or asymmetrical depth, i.e., one deep and one shallow. The second part 42 of the tear strip is fixedly connected to the inner cylinder 2 via its own tear strip fixing groove 421 and the hook 22 located at the second end of the inner cylinder 2. The fixed connection between the hook 22 and the tear strip fixing groove 421 makes it easier to tear the tear piece during collapse, achieving collapse energy absorption. The first support block 5 and the second support block 6 are located at the bottom of the first part 41 of the tear strip. The bottom of the first part 41 of the tear strip is the side facing the inner cylinder 2. Since the first part 41 of the tear strip is longer than the second part 42 of the tear strip, part of the first support block 5 is located between the first part 41 of the tear strip and the inner cylinder 2, and the other part is inserted into the gap between the first part 41 of the tear strip and the second part 42 of the tear strip. The area of ​​the first support block 5 is larger than that of the second support block 6.

[0030] Furthermore, such as Figure 6As shown, the second support block 6 is positioned below the first support block 5. Specifically, the first support block 5 has an accommodating cavity 52, and the second support block 6 is housed within the accommodating cavity 52. ​​The end of the second support block 6 away from the rivet 7 is fixedly connected to the inner cylinder 2 and abuts against the second part 42 of the tear strip. Specifically, the second support block 6 has a barb 611 at its second support block end 61 away from the rivet 7. The barb 611 is inserted into the inner cylinder fixing groove 23 of the inner cylinder 2 and fixedly connected to the inner cylinder 2. At the same time, the end of the barb 611 abuts against the second part 42 of the tear strip.

[0031] When no collapse occurs, the second support block 6 is located between the first part 41 of the tear strip and the inner cylinder 2. Then, the first part 41 of the tear strip and the first support block 5 are fixedly connected by rivets 7 passing through the first part 41 of the tear strip and the first support block 5. The bottom of the wings 51 on both sides of the first support block 5 (i.e., the side of the wings 51 facing the inner cylinder 2) cooperates with the elastic ribs 411 of the tear strip in the middle of the first part 41 of the tear strip, which limits the first support block 5 to remain relatively stationary and prevents the first support block 5 and the second support block 6 from overturning during the collapse process.

[0032] like Figure 11 As shown, in the fixed position, the handle 8 of the clamping device is closed. The handle 8 drives the passive cam 11 to engage the toothed stone 9 with the toothed groove 412 of the first part 41 of the tear strip, preventing the inner cylinder 2 from moving axially relative to the guide cylinder 1. In the released position, the handle 8 of the clamping device is open. The handle 8 drives the passive cam 11 to disengage the toothed stone 9 from the toothed groove 412 of the first part 41 of the tear strip, allowing the inner cylinder 2 to move axially relative to the guide cylinder 1. Collapse usually occurs when the clamping device is in the fixed position. The engagement of the toothed stone 9 with the toothed groove 412 of the first part 41 of the tear strip restricts the tear strip 4 from overturning during collapse.

[0033] The process of the crumple zone collapsing: A vehicle collision occurs, and the driver presses against the steering wheel, causing the steering column to move towards the front of the vehicle in the collapsing direction B. The fixed bracket 3 is fixedly connected to the vehicle body. Because the fixed bracket 3 is fixedly connected to the guide cylinder 1, neither the fixed bracket 3 nor the guide cylinder 1 moves during the collapse process. Figure 12As shown, when in the fixed position, the handle 8 is closed, and the inner cylinder 2 cannot move relative to the guide cylinder 1. However, due to the relatively large collapse force generated by the collision exceeding the threshold, the rivet 7 breaks, and the inner cylinder 2 moves relative to the guide cylinder 1 along the collapse direction B. The tear strip 4 starts to tear along the tear line 44 from the tear opening 45. The second support block 6 moves along the collapse direction B under the action of the inner cylinder 2 as the collapse progresses, leaving the first support block 5 and approaching the bottom surface of its first end. When the second support block 6 contacts the inner wall of the second end of the first support block 5 (i.e., the inner wall of the second end of the accommodating cavity 52), it stops moving. Thus, on the one hand, it achieves the simultaneous support of the first support block 5 and the first part 41 of the tear strip when there is no collapse and in the early stage of collapse, and on the other hand, it achieves the support of the first part 41 of the tear strip in the later stage of collapse and after the collapse is completed.

[0034] On the other hand, such as Figures 16 to 18 As shown, the guide cylinder 1 has a housing groove 101 and a limiting block 102 arranged in the radial direction. The limiting block 102 is fixedly connected to the inner cylinder 2 to limit the unwanted rotation of the inner cylinder 2 and prevent the tear strip 4 from twisting when it collapses. The limiting block 102 can be made of elastic material to avoid noise generated by the limiting block during adjustment.

[0035] like Figures 19-21 As shown, in addition to the toothed stone 9 and the toothed groove 412 that engages with the first part 41 of the tear strip to provide clamping force, a clamping spring 14 is provided on the other side of the fixing bracket 3. The clamping spring 14 includes multiple protrusions and an anti-rotation part 143. The protrusions include a first protrusion 141 and a second protrusion 142. The area of ​​the first protrusion 141 is larger than the area of ​​the second protrusion 142. The first protrusion 141 and the second protrusion 142 increase the friction and improve the clamping force, while the anti-rotation part 143 prevents the clamping spring 14 from rotating circumferentially during the opening and closing of the handle.

[0036] This embodiment utilizes a stamping process to manufacture a tear strip that absorbs energy during a car collision, thus reducing costs. Simultaneously, by adjusting the parameters of the tear strip and the surrounding components, the crumple zone requirements are met, ensuring smooth crumple.

[0037] Another embodiment of the present invention provides a vehicle, including a body and a steering column as described above, a fixed bracket 3 fixedly connected to the body, and a steering shaft 21 connected to a steering wheel.

[0038] Specifically, the vehicle body is fixedly connected to the fixed bracket 3, and the steering shaft 21 installed inside the inner cylinder 2 is connected to the steering wheel.

[0039] This invention features a tear strip installed on the inner cylinder of the steering column. This tear strip absorbs energy during a vehicle collision, reducing the overall cost of the crumple zone. Furthermore, the use of a stamping process further reduces costs. This invention's tear strip structure, manufactured using a stamping process, achieves cost reduction while still meeting crumple zone requirements and ensuring smooth crumple.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A steering column, characterized in that, It includes a guide cylinder (1), an inner cylinder (2), a fixed bracket (3), and a tear strip (4). The inner cylinder (2) is housed inside the guide cylinder (1). The inner cylinder (2) contains a steering shaft (21). The fixed bracket (3) is fixedly connected to the guide cylinder (1). One part of the tear strip (4) is fixedly connected to the inner cylinder (2), and the other part is riveted to the inner cylinder (2). A tear line (44) is provided on the tear strip (4).

2. The steering column according to claim 1, characterized in that, Also includes: The first support block (5), the second support block (6), and the rivet (7) are provided. The tear strip (4) includes a first part (41), a second part (42), and a bent part (43). The first part (41) and the second part (42) are connected by the bent part (43). The second part (42) is fixedly connected to the inner cylinder (2). The first support block (5) and the second support block (6) are located at the bottom of the first part (41). The rivet (7) passes through the first part (41) and the first support block (5) and is connected to the inner cylinder (2). The second support block (6) is fixedly connected to the inner cylinder (2) and abuts against the second part (42). The tear line (44) is provided on the side of the second part (42) facing the inner cylinder (2).

3. The steering column according to claim 2, characterized in that, The second part (42) of the tear strip is provided with a tear strip fixing groove (421), and the inner cylinder (2) is fixedly connected with a hook (22), which is inserted into the tear strip fixing groove (421).

4. The steering column according to claim 2, characterized in that, A tear opening (45) is provided at the connection between the second part (42) of the tear strip and the bend part (43) of the tear strip.

5. The steering column according to claim 2, characterized in that, The first part (41) of the tear strip is provided with a tear strip elastic rib (411) in the middle, and the first support block (5) is provided with wings (51) on both sides that cooperate with the tear strip elastic rib (411). The tear strip elastic rib (411) is inserted into the bottom of the wing (51).

6. The steering column according to claim 2, characterized in that, The length of the first part (41) of the tear strip is greater than the length of the second part (42) of the tear strip. The rivet (7) passes through the end of the first part (41) of the tear strip away from the bend (43) of the tear strip. The first support block (5) has a cavity (52) for receiving. The second support block (6) is housed in the cavity (52). The end of the second support block (6) away from the rivet (7) is fixedly connected to the inner cylinder (2) and abuts against the second part (42) of the tear strip.

7. The steering column according to claim 2, characterized in that, It also includes a handle (8), a toothed stone (9), a clamping bolt (10), and a passive cam (11). One end of the clamping bolt (10) is connected to the handle (8), and the other end is inserted into the passive cam (11) and the fixing bracket (3) in sequence. The first part (41) of the tear strip is provided with a plurality of toothed grooves (412) that cooperate with the toothed stone (9). The toothed stone (9) is connected to the passive cam (11). The handle (8) rotates in a first direction to drive the toothed stone (9) to engage with the toothed groove (412). The handle (8) rotates in a second direction to drive the toothed stone (9) to separate from the toothed groove (412). The first direction is opposite to the second direction.

8. The steering column according to claim 7, characterized in that, The other end of the clamping bolt (10) passes through the fixed bracket (3) and is connected to the bearing (12) and nut (13) in sequence. A clamping spring (14) is provided between the side wall of the fixed bracket (3) and the bearing (12), and the clamping spring (14) has multiple protrusions on the surface of the fixed bracket (3) facing the fixed bracket (3).

9. The steering column according to claim 1, characterized in that, The guide cylinder (1) has a housing groove (101) and a limiting block (102) fixedly connected to the inner cylinder (2) is placed in the housing groove (101).

10. A vehicle, characterized in that, Includes a vehicle body and a steering column as described in any one of claims 1 to 9, wherein the fixed bracket (3) is fixedly connected to the vehicle body and the steering shaft (21) is connected to the steering wheel.

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