Anti-collision abnormal sound device for angle adjustment limit position of steering column
By using components such as a collapse structure, a fixed bracket, an adjustment bracket and a buffer seat in the steering column angle adjustment device, the impact noise problem of the steering column at the extreme position is solved, and a quieter adjustment effect is achieved.
Patent Information
- Application Number
- CN202422679473.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-02
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-02
AI Technical Summary
The steering column angle adjustment device is prone to produce metal impact noise when in the extreme position, affecting the driving experience.
The collapsing structure, fixed bracket, adjustment bracket, spring, adjustment structure and buffer seat and other components are adopted. The buffer seat is used to limit the contact between the pin shaft and the slide groove at the extreme position, thereby reducing the impact noise.
It effectively reduces the impact noise during steering column angle adjustment and improves the driver's experience.
Smart Images
Figure CN223420786U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle technology, and in particular to a device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment. Background Art
[0002] The steering column angle adjustment device is an important component of the automobile steering system. It allows the driver to adjust the position of the steering wheel according to personal habits and driving conditions to improve driving comfort and safety.
[0003] In the related art, when adjusting the steering wheel, the driver needs to loosen the adjustment handle, move the steering wheel to drive the steering column to move up and down, and then lock the adjustment handle to adapt to people of different heights and different driving habits to drive the vehicle and achieve the purpose of comfortably operating the steering wheel.
[0004] However, when the steering column angle adjustment device is in the upper or lower extreme positions, metal collision noise is easily generated, which gives customers a poor experience. Utility Model Content
[0005] In order to solve the problem that metal impact noise is easily generated when the steering column angle adjustment device is in the upper and lower limit positions, the present application provides an anti-collision and abnormal noise device for the steering column angle adjustment limit positions.
[0006] The present application provides a device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment, which adopts the following technical solution:
[0007] The camshaft is secured to the steering column by a spring which is secured to the steering column by a spring which is secured to the steering column by a spring which is secured to the steering column by a spring which is secured to the steering column by a spring which is secured to the steering column by a spring which is secured to the steering column by a spring.
[0008] The first combined structure and the second combined structure respectively include a friction plate and two buffer seats, a sliding groove is opened in the friction plate, the pin shaft is located in the sliding groove and slides up and down in the sliding groove, and the two buffer seats are respectively installed at the upper and lower ends of the sliding groove.
[0009] By adopting the above technical solution, when the driver adjusts the steering wheel, the adjustment structure is first opened, and then the steering wheel is moved up and down, so that the steering column connected to the steering wheel moves in the adjustment bracket and the fixed bracket. Since the adjustment bracket is always in contact with the lower end of the steering column under the tension of the first spring and the second spring, and the adjustment structure is inserted into the adjustment bracket and moves synchronously with the adjustment bracket, the position of the steering column can be fixed in the fixed bracket and the adjustment bracket by closing the adjustment structure, thereby completing the adjustment of the up and down angles of the steering wheel. Since buffer seats are respectively installed at the upper and lower ends of the sliding groove of the friction plate, when the pin shaft moves to the upper and lower limit positions, the pin shaft contacts the buffer seat, limiting the direct contact between the pin shaft and the upper and lower limit positions of the sliding groove. At the same time, the buffer seat has a buffering effect on the impact force of the pin shaft, thereby reducing the noise of the impact.
[0010] Preferably, the fixing bracket is an inverted U-shaped structure, and a clamping hole is respectively opened at both ends of the fixing bracket, and the first combined structure and the second combined structure are respectively clamped in the clamping holes.
[0011] Preferably, the upper and lower ends of the slide groove are respectively provided with an upper flange and a lower flange, and the buffer seat is provided with a flange mounting hole for plugging with the upper flange or the lower flange.
[0012] By adopting the above technical solution, the two buffer seats are fixed at the upper and lower ends of the slide groove through the upper and lower flanges respectively to limit the direct contact between the pin shaft and the upper and lower limit positions of the slide groove, thereby reducing the impact noise.
[0013] Preferably, both ends of the buffer seat are respectively provided with undercuts, and the left and right ends of the slide groove are respectively provided with left and right flanges, and the left and right flanges are respectively provided with undercut mounting holes for clamping the undercuts.
[0014] By adopting the above technical solution, the buffer seat is first inserted into the upper flange or the lower flange through the flange mounting hole, and then connected to the left flange and the right flange through the undercuts on both sides of the buffer seat, so that the buffer seat is more firmly installed at the upper and lower ends of the friction plate slide groove, which can produce a better buffering effect on the impact of the pin shaft.
[0015] Preferably, the locking structure includes an adjusting cam, an adjusting handle and a thrust needle roller bearing, and the adjusting cam, the adjusting handle and the thrust needle roller bearing are sequentially sleeved on the pin shaft, one end of the adjusting handle is fixedly connected to the adjusting cam, and the other end of the adjusting handle is in contact with the thrust needle roller bearing.
[0016] By adopting the above technical solution, one end of the adjustment handle is fixedly connected to the adjustment cam, and the other end of the adjustment handle is in contact with the thrust needle roller bearing. By rotating the adjustment handle, the adjustment cam angle adjustment function can be turned on and off, thereby realizing the control of the steering column angle adjustment state.
[0017] Preferably, the adjusting cam includes a first cam and a second cam, the first cam is located at an end of the second cam away from the fixed bracket, and the first cam and the second cam rotate relative to each other to squeeze or relax the adjusting bracket; the first cam is fixedly connected to the adjusting handle.
[0018] By adopting the above technical solution, the first adjustment cam is rotated by rotating the adjustment handle to achieve a change in the axial distance. When the axial distance becomes larger, the angle adjustment function is turned off, and when the axial distance becomes smaller, the angle adjustment function is turned on.
[0019] Preferably, the first cam and the second cam are respectively fixedly connected with a connecting block, the connecting block is a right-angled trapezoidal structure, one end of the connecting block is an arc-shaped inclined surface, and the other end of the connecting block is a vertical surface, and at least two connecting blocks are provided; the arc-shaped inclined surfaces of the connecting blocks of the first cam and the second cam abut against each other and can slide relative to each other; a limit block is provided on the outside of the connecting block, and the position of the limit block corresponds one-to-one to that of the connecting block.
[0020] By adopting the above technical solution, when in use, the second cam is fixed, and the first cam is rotated in the direction from the bottom of the arc-shaped inclined surface of the connecting block to the top of the arc-shaped inclined surface, so that the arc-shaped inclined surface of the connecting block of the first cam and the arc-shaped inclined surface of the connecting block of the second cam are relatively rotated until the top surface of the connecting block of the first cam abuts the top surface of the connecting block of the second cam, thereby increasing the axial distance between the first cam and the second cam; at the same time, the side wall of the limit block of the first cam abuts the side wall of the limit block of the second cam to hinder the continued rotation of the first cam, at which time the adjustment bracket is squeezed and the angle adjustment function is in a closed state; when the first cam is rotated in the opposite direction, the top surface of the connecting block of the first cam is separated from the top surface of the connecting block of the second cam, and then the arc-shaped inclined surface of the connecting block of the first cam abuts the arc-shaped inclined surface of the connecting block of the second cam, so that the axial distance between the first cam and the second cam is reduced, until the vertical surface of the connecting block of the first cam abuts the vertical surface of the connecting block of the second cam to hinder the continued rotation of the first cam, at which time the adjustment bracket is relaxed and the angle adjustment function is in an open state.
[0021] Preferably, the end of the second cam away from the first cam is fixedly connected to a second fixing block, the second fixing block is clamped in the slide groove, and the pin passes through the second fixing block and drives the second fixing block to slide up and down in the slide groove.
[0022] By adopting the technical scheme, the second fixed block connects the second cam with the friction plate, so that the connection of the whole adjusting structure is more stable, and the contact area of the second fixed block with the buffer seat is larger than the contact area of the pin shaft with the buffer seat, so that the force can be dispersed, and the noise of impact in the adjusting process is further reduced.
[0023] Preferably, the locking structure further comprises a flat washer, the flat washer is sleeved on the pin shaft, and the two ends of the flat washer are respectively in abutment with the adjusting handle and the thrust needle bearing.
[0024] By adopting the technical scheme, the flat washer avoids the direct contact between the adjusting handle and the thrust needle bearing, further reduces the noise, and at the same time, since the adjusting handle and the adjusting cam are often rotated to change the axial distance, the pressure can be dispersed, and the service life of the adjusting handle and the thrust needle bearing is prolonged.
[0025] In summary, the present application has at least one of the following beneficial technical effects:
[0026] 1. The buffer seat is respectively installed at the upper and lower ends of the sliding groove of the friction plate, when the pin shaft moves to the upper and lower limit positions, the pin shaft is in contact with the buffer seat, which limits the direct contact of the pin shaft with the upper and lower limit positions of the sliding groove, and at the same time, the buffer seat has a buffering effect on the impact force of the pin shaft, thereby reducing the noise of impact.
[0027] 2. The buffer seat is inserted into the upper or lower turned edge, and the reverse buckles on the two sides of the buffer seat are respectively clamped into the reverse buckle mounting holes of the left and right turned edges, so as to firmly install the buffer seat at the upper and lower ends of the sliding groove of the friction plate. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;
[0029] Figure 2 is an exploded view of the structure of the embodiment of the present application;
[0030] Figure 3 is a schematic diagram of the locking structure of the embodiment of the present application;
[0031] Figure 4 is a schematic diagram of the adjusting cam of the embodiment of the present application;
[0032] Figure 5 is a schematic diagram of the friction plate of the embodiment of the present application;
[0033] Figure 6 is a schematic diagram of the buffer seat of the embodiment of the present application.
[0034] Reference numerals: 1, collapse structure; 2, fixing bracket; 21, snap-fit hole; 3, adjustment bracket; 4, first spring; 5, second spring; 6, adjustment structure; 61, first combined structure; 611, friction plate; 6111, slide groove; 6112, upper flange; 6113, lower flange; 6114, left flange; 6115, right flange; 6116, undercut mounting hole; 612, buffer seat; 6121, flange mounting hole; 6122 , undercut; 62. Second combination structure; 63. Locking structure; 631. Adjusting cam; 6311. First cam; 6312. Second cam; 6313. Connecting block; 6314. Limiting block; 6315. First fixing block; 6316. Second fixing block; 632. Adjusting handle; 6321. Handle mounting hole; 633. Flat washer; 634. Thrust needle roller bearing; 64. Pin; 65. Self-locking nut; 7. Steering column. DETAILED DESCRIPTION
[0035] The following is combined with Figure 1-6 This application is described in further detail.
[0036] The present application discloses a device for preventing collision and abnormal noise at the extreme position of the steering column angle adjustment. Figure 1 and Figure 2 The invention comprises a crush structure 1, a fixed bracket 2, an adjustment bracket 3, a first spring 4, a second spring 5 and an adjustment structure 6, wherein the fixed bracket 2 is an inverted U-shaped structure, the crush structure 1 is fixedly mounted above the fixed bracket 2, and is used to absorb the impact force of the collision by using the kinetic energy deformation generated when a collision occurs; the adjustment bracket 3 is mounted below the fixed bracket 2, and a steering column 7 is passed between the adjustment bracket 3 and the fixed bracket 2, and one end of the steering column 7 is connected to the steering wheel; the first spring 4 and the second spring 5 are respectively mounted at both ends of the fixed bracket 2, one end of the first spring 4 and the second spring 5 are respectively connected to the crush structure 1, and the other end of the first spring 4 and the second spring 5 are respectively connected to the adjustment bracket 3, and the elastic force of the first spring 4 and the second spring 5 makes the upper end of the adjustment bracket 3 always abut the lower end of the steering column 7; the adjustment structure 6 passes through the fixed bracket 2 and the adjustment bracket 3 along the radial direction of the steering column 7, and the adjustment structure 6 controls the turning on and off of the up and down angle adjustment function of the steering wheel by squeezing or relaxing the adjustment bracket 3.
[0037] When the driver adjusts the steering wheel up or down, he first turns on the angle adjustment function, and then moves the steering wheel up or down, so that the steering column 7 connected to the steering wheel moves in the adjustment bracket 3 and the fixed bracket 2; because the upper end of the adjustment bracket 3 is always in contact with the lower end of the steering column 7 under the pulling force of the first spring 4 and the second spring 5, and the adjustment structure 6 passes through the adjustment bracket 3 and moves synchronously with the adjustment bracket 3, the position of the steering column 7 can be fixed in the fixed bracket 2 and the adjustment bracket 3 by squeezing the adjustment bracket 3 to turn off the angle adjustment function, thereby completing the adjustment of the steering wheel up or down angle.
[0038] Specifically, the adjustment structure 6 includes a first combination structure 61, a second combination structure 62, a locking structure 63, a pin shaft 64 and a self-locking nut 65, wherein the pin shaft 64 passes through the second combination structure 62, the fixed bracket 2, the adjustment bracket 3, the first combination structure 61 and the locking structure 63 in sequence along the radial direction of the steering column 7 and is fixed by the self-locking nut 65 to fix the position of the steering column 7 in the adjustment bracket 3 and the fixed bracket 2.
[0039] Reference Figure 3 and Figure 4 The locking structure 63 includes an adjusting cam 631, an adjusting handle 632, a flat washer 633 and a thrust needle roller bearing 634. The adjusting cam 631, the adjusting handle 632, the flat washer 633 and the thrust needle roller bearing 634 are sequentially sleeved on the pin shaft 64 along the direction of the pin shaft 64 toward the self-locking nut 65.
[0040] The adjustment cam 631 includes a first cam 6311 and a second cam 6312. The first cam 6311 and the second cam 6312 are arranged parallel to each other, with the first cam 6311 located at the end of the second cam 6312 away from the steering column 7. The first cam 6311 and the second cam 6312 can rotate relative to each other, causing the axial distance between the first cam 6311 and the second cam 6312 to change. When the axial distance between the first cam 6311 and the second cam 6312 increases, the angle adjustment function is disabled, the adjustment bracket 3 is squeezed, and the steering wheel and steering column 7 cannot move to adjust the angle. When the axial distance between the first cam 6311 and the second cam 6312 decreases, the angle adjustment function is enabled, the adjustment bracket 3 is relaxed, and the driver moves the steering wheel up or down, causing the steering column 7 connected to the steering wheel to move within the fixed bracket 2 and the adjustment bracket 3 under force, thereby adjusting the steering column 7 up or down.
[0041] Furthermore, since the structures of the first cam 6311 and the second cam 6312 are identical, the following explanation will use the structure of the first cam 6311 as an example. The first cam 6311 includes an inner ring and an outer ring, with a connecting block 6313 integrally formed with the inner ring. The connecting block 6313 is a right-angled trapezoidal structure, with one end of the connecting block 6313 being an arcuate slope and the other end being a vertical surface. The arcuate slopes of the connecting blocks 6313 of the first cam 6311 and the second cam 6312 abut against each other and can slide relative to each other.
[0042] In this embodiment, there are four connecting blocks 6313, which are evenly spaced along the circumference of the inner ring, and the arc-shaped inclined surfaces of the four connecting blocks 6313 are in the same direction. The outer ring is provided with a limit block 6314, and the position of the limit block 6314 corresponds to the position of the connecting block 6313.
[0043] When in use, fix the second cam 6312, rotate the first cam 6311 along the direction from the bottom of the arc-shaped inclined surface of the connecting block 6313 to the top of the arc-shaped inclined surface, and rotate the arc-shaped inclined surface of the connecting block 6313 of the first cam 6311 and the arc-shaped inclined surface of the connecting block 6313 of the second cam 6312 relative to each other until the top surface of the connecting block 6313 of the first cam 6311 abuts against the top surface of the connecting block 6313 of the second cam 6312, thereby increasing the axial distance between the first cam 6311 and the second cam 6312; at the same time, the side wall of the limit block 6314 of the first cam 6311 abuts against the side wall of the limit block 6314 of the second cam 6312 to prevent the first cam 6311 from continuing to rotate. At this time, the adjustment bracket 3 is squeezed and the angle adjustment function is in a closed state. When the first cam 6311 is rotated in the opposite direction, the top surface of the connecting block 6313 of the first cam 6311 is separated from the top surface of the connecting block 6313 of the second cam 6312, and then the arc-shaped inclined surface of the connecting block 6313 of the first cam 6311 abuts against the arc-shaped inclined surface of the connecting block 6313 of the second cam 6312, so that the axial distance between the first cam 6311 and the second cam 6312 is reduced until the vertical surface of the connecting block 6313 of the first cam 6311 abuts against the vertical surface of the connecting block 6313 of the second cam 6312 to prevent the first cam 6311 from continuing to rotate. At this time, the adjustment bracket 3 is relaxed and the angle adjustment function is in the on state.
[0044] A first fixing block 6315 is integrally formed on the end of the first cam 6311 away from the second cam 6312. The adjustment handle 632 defines a handle mounting hole 6321, into which the first fixing block 6315 engages. Turning the adjustment handle 632 rotates the first cam 6311. A second fixing block 6316 is integrally formed on the end of the second cam 6312 away from the first cam 6311. The second fixing block 6316 is configured to engage with the first assembly structure 61.
[0045] Reference Figure 2 and Figure 5 The left and right ends of the fixing bracket 2 are respectively provided with engaging holes 21, and the first assembly structure 61 and the second assembly structure 62 are respectively engaged in the engaging holes 21. Since the structure and installation method of the first assembly structure 61 are the same as those of the second assembly structure 62, the structure and installation method of the first assembly structure 61 are used as an example to explain the following.
[0046] The first combined structure 61 includes a friction plate 611 and two buffer seats 612. The friction plate 611 is a rectangular plate structure. A slide groove 6111 is opened in the middle of the friction plate 611. The length direction of the slide groove 6111 is parallel to the length direction of the friction plate 611. The second fixed block 6316 is clamped in the slide groove 6111 and can slide up and down in the slide groove 6111. The two buffer seats 612 are respectively installed at the upper and lower ends of the slide groove 6111.
[0047] Specifically, refer to Figure 5 and Figure 6 An upper flange 6112, a lower flange 6113, a left flange 6114, and a right flange 6115 are respectively provided around the chute 6111, near one end of the adjustment bracket 3. The upper flange 6112 and the lower flange 6113 are identical in shape and position, and the left flange 6114 and the right flange 6115 are identical in shape and position. A flange mounting hole 6121 is provided in the center of the buffer seat 612. The shape and position of the flange mounting hole 6121 correspond to those of the upper and lower flanges 6112 and 6113, and the flange mounting hole 6121 is adapted to engage with the upper and lower flanges 6112 and 6113. Furthermore, undercuts 6122 are provided on both sides of the buffer seat 612. Undercut mounting holes 6116 are provided at the upper and lower ends of the left and right flanges 6114 and 6115, respectively, for engaging with the undercuts 6122.
[0048] When installing the buffer seat 612 at the upper end of the slide groove 6111, first insert the upper flange 6112 into the flange mounting hole 6121, and then respectively clamp the undercuts 6122 on both sides of the buffer seat 612 into the undercut mounting holes 6116 at the upper ends of the left flange 6114 and the right flange 6115, so as to firmly install the buffer seat 612 at the upper end of the slide groove 6111 at the upper end of the slide groove 6111. At this time, the lower edge of the buffer seat 612 at the upper end of the slide groove 6111 is lower than the upper groove wall of the slide groove 6111.
[0049] When installing the buffer seat 612 at the lower end of the slide groove 6111, first insert the lower flange 6113 into the flange mounting hole 6121, and then respectively clamp the undercuts 6122 on both sides of the buffer seat 612 into the undercut mounting holes 6116 at the lower ends of the left flange 6114 and the right flange 6115, so as to firmly install the buffer seat 612 at the lower end of the slide groove 6111 at the lower end of the slide groove 6111. At this time, the upper edge of the buffer seat 612 at the lower end of the slide groove 6111 is higher than the lower groove wall of the slide groove 6111.
[0050] When the driver adjusts the steering wheel angle, the locking structure 63 is opened, the steering wheel is moved, and the steering column 7 connected to the steering wheel drives the pin 64 and the second fixed block 6316 to slide in the slide groove 6111; when the second fixed block 6316 moves to the upper and lower extreme positions of the slide groove 6111, the second fixed block 6316 abuts against the lower edge of the buffer seat 612 at the upper end of the slide groove 6111 or the upper edge of the buffer seat 612 at the lower end of the slide groove 6111, avoiding direct contact between the second fixed block 6316 and the upper and lower groove walls of the slide groove 6111, thereby reducing collision noise and effectively improving the user experience. In this embodiment, the material of the buffer seat 612 can be replaced according to needs, such as plastic or rubber.
[0051] The implementation principle of the anti-collision and abnormal noise device for the extreme position of steering column angle adjustment disclosed in an embodiment of the present application is: when the driver adjusts the up and down angles of the steering wheel, the adjustment bracket 3 abutting against the steering wheel steering column 7 will also move up and down. During the movement, the pin shaft 64 will drive the second fixed block 6316 to collide with the groove wall of the slide groove 6111 of the friction plate 611. The embodiment of the present application is respectively provided with a buffer seat 612 at the upper and lower ends of the friction plate 611. The blocking of the buffer seat 612 limits the direct contact between the second fixed block 6316 and the upper and lower extreme positions of the slide groove 6111, thereby limiting the direct collision of the second fixed block 6316 with the upper and lower extreme positions of the slide groove 6111, and reducing the noise of metal collision.
[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment, characterized in that: The invention comprises a collapsible structure (1), a fixed bracket (2), an adjusting bracket (3), a first spring (4), a second spring (5) and an adjusting structure (6), wherein the collapsible structure (1) is fixedly mounted above the fixed bracket (2), the adjusting bracket (3) is mounted below the fixed bracket (2), and a steering column (7) connected to a steering wheel is provided between the adjusting bracket (3) and the fixed bracket (2); the first spring (4) and the second spring (5) act between the fixed bracket (2) and the adjusting bracket (3) to pull the adjusting bracket (3) to abut against the steering column (7). The lower end; the adjustment structure (6) includes a first combination structure (61), a second combination structure (62), a locking structure (63), a pin (64) and a self-locking nut (65); the pin (64) passes through the second combination structure (62), the fixing bracket (2), the adjustment bracket (3), the first combination structure (61) and the locking structure (63) in sequence along the radial direction of the steering column (7) and is fixed by the self-locking nut (65); the adjustment structure (6) is used to squeeze or loosen the adjustment bracket (3) to control the opening or closing of the upward and downward angle adjustment function of the steering wheel; The first combined structure (61) and the second combined structure (62) each include a friction plate (611) and two buffer seats (612), wherein a slide groove (6111) is provided in the friction plate (611), the pin shaft (64) is located in the slide groove (6111) and slides up and down in the slide groove (6111), and the two buffer seats (612) are respectively installed at the upper and lower ends of the slide groove (6111).
2. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 1, characterized in that: The fixing bracket (2) is an inverted U-shaped structure, and a clamping hole (21) is respectively provided at both ends of the fixing bracket (2), and the first combined structure (61) and the second combined structure (62) are respectively clamped in the clamping holes (21).
3. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 2, characterized in that: The upper and lower ends of the slide groove (6111) are respectively provided with an upper flange (6112) and a lower flange (6113), and the buffer seat (612) is provided with a flange mounting hole (6121) for plugging with the upper flange (6112) or the lower flange (6113).
4. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 3, characterized in that: The two ends of the buffer seat (612) are respectively provided with undercuts (6122), and the left and right ends of the slide groove (6111) are respectively provided with a left flange (6114) and a right flange (6115), and the left flange (6114) and the right flange (6115) are respectively provided with undercut mounting holes (6116) for clamping the undercuts (6122).
5. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 1, characterized in that: The locking structure (63) comprises an adjusting cam (631), an adjusting handle (632) and a thrust needle roller bearing (634); the adjusting cam (631), the adjusting handle (632) and the thrust needle roller bearing (634) are sequentially sleeved on the pin shaft (64); one end of the adjusting handle (632) is fixedly connected to the adjusting cam (631), and the other end of the adjusting handle (632) is in contact with the thrust needle roller bearing (634).
6. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 5, characterized in that: The adjusting cam (631) comprises a first cam (6311) and a second cam (6312), wherein the first cam (6311) is located at an end of the second cam (6312) away from the fixed bracket (2), and the first cam (6311) and the second cam (6312) rotate relative to each other to squeeze or release the adjusting bracket (3); the first cam (6311) is fixedly connected to the adjusting handle (632).
7. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 6, characterized in that: The first cam (6311) and the second cam (6312) are respectively fixedly connected to a connecting block (6313), and the connecting block (6313) is a right-angled trapezoidal structure. One end of the connecting block (6313) is an arc-shaped inclined surface, and the other end of the connecting block (6313) is a vertical surface. At least two connecting blocks (6313) are provided; the arc-shaped inclined surfaces of the connecting blocks (6313) of the first cam (6311) and the second cam (6312) abut against each other and can slide relative to each other; a limiting block (6314) is provided on the outside of the connecting block (6313), and the position of the limiting block (6314) corresponds one-to-one to that of the connecting block (6313).
8. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 6, characterized in that: The second cam (6312) is fixedly connected to a second fixed block (6316) at one end away from the first cam (6311), and the second fixed block (6316) is engaged in the slide groove (6111). The pin shaft (64) passes through the second fixed block (6316) and drives the second fixed block (6316) to slide up and down in the slide groove (6111).
9. The device for preventing collision and abnormal noise at the extreme position of steering column angle adjustment according to claim 5, characterized in that: The locking structure (63) further includes a flat washer (633), which is sleeved on the pin (64) and has two ends of the flat washer (633) abutting against the adjustment handle (632) and the thrust needle roller bearing (634), respectively.