Anti-slip mechanical tubular column locking mechanism

Abstract

The utility model relates to a locking mechanism, in particular to an anti-slip mechanical tubular column locking mechanism. The locking mechanism comprises a connecting shaft, a handle is arranged at one end of the connecting shaft, an inner cam is sleeved on the inner side of the handle, and an outer cam is sleeved between the inner cam and the handle. A damper is arranged at the other end of the connecting shaft; the outer cam is connected with the connecting shaft through a spline. The locking mechanism is connected with the connecting shaft through a spline or in a friction increasing mode, slipping between the outer cam and the connecting shaft can be effectively prevented, damping of the damper can act on the handle through the connecting shaft and the outer cam all the time, it is guaranteed that the handle is not prone to rotating rapidly, and then it is guaranteed that the hand is not beaten. The problem that an outer cam and a connecting shaft of an existing steering column are prone to rotating and slipping, and a handle is prone to beating is solved.

Description

Technical Field

[0001] The utility model relates to a locking mechanism, in particular to an anti-skidding mechanical pipe column locking mechanism. Background Art

[0002] The mechanical column is one of the important components connecting the steering wheel and the steering gear. To ensure driving comfort, the mechanical column generally has the function of adjusting the height and pitch angle of the steering wheel. The mechanical column is generally loosened or locked by the handle and cam mechanism before and after adjustment. The cam mechanism includes an outer cam and an inner cam. During the adjustment process, the outer cam will rotate relative to the inner cam driven by the handle. During the relative rotation of the outer cam and the inner cam, under the action of elastic force, the outer cam is prone to rotate too fast, which causes the handle to rotate too fast, and then causes the handle to hit the hand.

[0003] The patent application with the announcement number CN219989319U discloses a locking mechanism for a car steering column, which is composed of a connecting shaft, a cam unit and a handle. The cam unit is provided at one end of the connecting shaft, and the handle is provided on the connecting shaft outside the cam unit; the damper is installed at the other end of the connecting shaft through an adjusting nut. The locking mechanism of the car steering column uses the damper to counteract the rotational force generated by the cam unit on the handle, thereby effectively reducing the rotation speed of the handle when the handle is turned, preventing the handle from hitting the hand and avoiding safety hazards; the damper can be adjusted up and down through the limiting slide, and then the steering column can be adjusted in angle without affecting the adjustment function of the car steering column; it solves the problem that the existing car steering column is easy to hit the hand, resulting in safety risks.

[0004] The above-mentioned steering column prevents the handle from rotating quickly by the damping of the damper, thereby solving the problem of the handle hitting the hand. For the convenience of processing and assembly, the connecting shaft is generally connected to the outer cam by an interference fit. However, the damping formed by the damper of the above-mentioned steering column will form resistance to the rotation of the connecting shaft. When the handle drives the connecting shaft to rotate through the outer cam, under the resistance of the damper to the connecting shaft, there is a possibility of slipping between the outer cam and the connecting shaft. Especially when the components are working for a long time, the gap between the outer cam and the connecting shaft will become larger after wear, further causing the outer cam and the connecting shaft to slip. When the outer cam and the connecting shaft slip, the rotation of the handle will lose damping, and then the handle will easily rotate quickly, causing it to hit the hand. Therefore, it is necessary to further improve it to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the utility model is to provide an anti-skid mechanical pipe column locking mechanism which has a simple structure, can effectively prevent skidding and is easy to install, in view of the deficiencies in the prior art.

[0006] The technical solution of the utility model is:

[0007] A mechanical pipe column locking mechanism with an anti-slip function consists of a connecting shaft, a handle, an inner cam, an outer cam and a damper. A handle is arranged at one end of the connecting shaft, an inner cam is sleeved on the inner side of the handle, and an outer cam is sleeved between the inner cam and the handle. A damper is arranged at the other end of the connecting shaft. The mechanism is characterized in that the outer cam is connected to the connecting shaft via a spline.

[0008] A mechanical pipe column locking mechanism with an anti-slip function consists of a connecting shaft, a handle, an inner cam, an outer cam and a damper. A handle is arranged at one end of the connecting shaft, an inner cam is mounted on the inner side of the handle, and an outer cam is mounted between the inner cam and the handle. A damper is arranged at the other end of the connecting shaft. The mechanism is characterized in that assembly holes are evenly distributed on the circumference of the outer cam, and friction-enhancing rubber strips are inserted into the assembly holes.

[0009] A locking bolt is threadedly installed in the assembly hole on the outer side of the friction enhancing rubber strip, and a spring is arranged between the locking bolt and the friction enhancing rubber strip.

[0010] The handle is provided with a square hole.

[0011] A limiting block is arranged on the outer cam on one side of the handle, and the outer cam is connected with the handle through the cooperation of the limiting block and the square hole.

[0012] The beneficial effects of the utility model are:

[0013] The anti-skid mechanical column locking mechanism is connected to the connecting shaft by splines or by increasing friction, which can effectively prevent the outer cam from slipping with the connecting shaft, so that the damping energy of the damper can always act on the handle through the connecting shaft and the outer cam, ensuring that the handle is not easy to rotate quickly, thereby ensuring that the handle will not hit the hand. The problem that the outer cam of the existing steering column and the connecting shaft are easy to rotate and slip, resulting in the handle being easy to hit the hand is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection state of the connecting shaft of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the external cam of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the external cam of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the handle of the utility model.

[0019] In the figure: 1. connecting shaft, 2. handle, 3. inner cam, 4. outer cam, 5. damper, 6. spline, 7. assembly hole, 8. friction enhancing rubber strip, 9. locking bolt, 10. spring, 11. square hole, 12. limit block. DETAILED DESCRIPTION Example 1

[0020] The anti-skid mechanical column locking mechanism is composed of a connecting shaft 1, a handle 2, an inner cam 3, an outer cam 4 and a damper 5. The handle 2 is provided at one end of the connecting shaft 1, the inner cam 3 is sleeved on the inner side of the handle 2, and the outer cam 4 is sleeved between the inner cam 3 and the handle 2; the damper 5 is provided at the other end of the connecting shaft 1. The handle 2 is used to drive the outer cam 4 to rotate, thereby making the outer cam 4 and the inner cam 3 rotate relative to each other, and locking or loosening the steering column through the relatively rotating outer cam 4 and the inner cam 3, so as to adjust the height or pitch angle of the steering wheel when the steering column is loosened, and locking the steering column through the outer cam 4 and the inner cam 3 after the steering wheel is adjusted, thereby locking the position of the steering wheel. The function of the damper 5 is to damp the rotation of the connecting shaft 1 through the damper 5, so that the connecting shaft 1 is not easy to rotate quickly under the action of the damper 5, and then the outer cam 4 is not easy to rotate quickly, thereby making the handle 2 not easy to rotate quickly, and making the handle 2 not easy to hit the hand, thereby ensuring safety.

[0021] The outer cam 4 is connected to the connecting shaft 1 through the spline 6. Since the spline 6 needs to be destroyed first when the outer cam 4 rotates relative to the connecting shaft 1, the spline 6 can ensure that the outer cam 4 is not easy to rotate relative to the connecting shaft 1, thereby ensuring that the damper 5 can sequentially apply damping to the handle 2 through the connecting shaft 1, the spline 6, and the outer cam 4, thereby ensuring that the handle 2 is not easy to rotate quickly, thereby ensuring that the handle 2 will not hit the hand, ensuring safety.

[0022] A square hole 11 is provided on the handle 2. A limit block 12 is provided on the outer cam 4 on one side of the handle 2. The limit block 12 is square in shape and is plug-connected with the square hole 11. The outer cam 4 is connected to the handle 2 through the cooperation of the limit block 12 and the square hole 11. The function of the square hole 11 is to limit the relative position of the handle 2 and the outer cam 4 through the cooperation of the square hole 11 and the limit block 12, so that the handle 2 can drive the outer cam 4 to rotate through the square hole 11 and the limit block 12, thereby loosening or locking; at the same time, the outer cam 4 can apply damping to the handle 2 through the square hole 11 and the limit block 12, so that the handle 2 is not easy to rotate quickly.

[0023] When the anti-skid mechanical column locking mechanism is released, the handle 2 is toggled, and the handle 2 drives the outer cam 4 to rotate through the square hole 11 and the limit block 12, so that the outer cam 4 and the inner cam 3 are close to each other, thereby releasing the steering column and adjusting the steering column. During the rotation of the outer cam 4, the spline 6 drives the connecting shaft 1 to rotate, and the connecting shaft 1 drives the damper 5 to rotate. During the rotation of the damper 5, damping is formed on the connecting shaft 1, and the connecting shaft 1 transmits the damping to the outer cam 4 and the handle 2 to prevent the outer cam 4 and the handle 2 from rotating quickly.

[0024] When the anti-skid mechanical column locking mechanism is locked, the handle 2 is toggled, and the handle 2 drives the outer cam 4 to rotate through the square hole 11 and the limit block 12, so that the outer cam 4 and the inner cam 3 expand each other, thereby locking the steering column. Example 2

[0025] The anti-skid mechanical column locking mechanism is composed of a connecting shaft 1, a handle 2, an inner cam 3, an outer cam 4 and a damper 5. The handle 2 is provided at one end of the connecting shaft 1, the inner cam 3 is sleeved on the inner side of the handle 2, and the outer cam 4 is sleeved between the inner cam 3 and the handle 2; the damper 5 is provided at the other end of the connecting shaft 1. The handle 2 is used to drive the outer cam 4 to rotate, thereby making the outer cam 4 and the inner cam 3 rotate relative to each other, and locking or loosening the steering column through the relatively rotating outer cam 4 and the inner cam 3, so as to adjust the height or pitch angle of the steering wheel when the steering column is loosened, and locking the steering column through the outer cam 4 and the inner cam 3 after the steering wheel is adjusted, thereby locking the position of the steering wheel. The function of the damper 5 is to damp the rotation of the connecting shaft 1 through the damper 5, so that the connecting shaft 1 is not easy to rotate quickly under the action of the damper 5, and then the outer cam 4 is not easy to rotate quickly, thereby making the handle 2 not easy to rotate quickly, and making the handle 2 not easy to hit the hand, thereby ensuring safety.

[0026] Assembly holes 7 are evenly distributed on the circumference of the outer cam 4, and friction-enhancing rubber strips 8 are inserted into the assembly holes 7. The function of the friction-enhancing rubber strips 8 is to enhance the friction between the outer cam 4 and the connecting shaft 1 through the friction-enhancing rubber strips 8, thereby ensuring that the outer cam 4 is not easy to slip with the connecting shaft 1; at the same time, after the friction-enhancing rubber strips 8 are worn, the rubber blocks or powders generated by the friction of the friction-enhancing rubber strips 8 can fill the gap between the outer cam 4 and the connecting shaft 1, so that even if the wear gap between the outer cam 4 and the connecting shaft 1 increases, the friction can be maintained, ensuring that the outer cam 4 is not easy to slip with the connecting shaft 1.

[0027] A locking bolt 9 is threadedly installed in the assembly hole 7 on the outer side of the friction enhancing rubber strip 8, and a spring 10 is arranged between the locking bolt 9 and the friction enhancing rubber strip 8. The function of the spring 10 is to push the friction enhancing rubber strip 8 to move inwardly of the center hole of the outer cam 4 through the spring 10, thereby maintaining the connection between the friction enhancing rubber strip 8 and the connecting shaft 1, so that after the friction enhancing rubber strip 8 is worn, the friction between the outer cam 4 and the connecting shaft 1 can still be maintained.

[0028] A square hole 11 is provided on the handle 2. A limit block 12 is provided on the outer cam 4 on one side of the handle 2, and the outer cam 4 is connected to the handle 2 through the cooperation of the limit block 12 and the square hole 11. The function of the square hole 11 is to limit the relative position of the handle 2 and the outer cam 4 through the cooperation of the square hole 11 and the limit block 12, so that the handle 2 can drive the outer cam 4 to rotate through the square hole 11 and the limit block 12, thereby loosening or locking; at the same time, the outer cam 4 can apply damping to the handle 2 through the square hole 11 and the limit block 12, so that the handle 2 is not easy to rotate quickly.

[0029] When the anti-skid mechanical column locking mechanism is released, the handle 2 is moved, and the handle 2 drives the outer cam 4 to rotate through the square hole 11 and the limit block 12, so that the outer cam 4 and the inner cam 3 are close to each other, and then the steering column is released to adjust the steering column. During the rotation of the outer cam 4, the friction between the outer cam 4 and the connecting shaft 1 and the friction between the friction-enhancing rubber strip 8 and the connecting shaft 1 drive the connecting shaft 1 to rotate, and the connecting shaft 1 drives the damper 5 to rotate. During the rotation of the damper 5, damping is formed on the connecting shaft 1, and the connecting shaft 1 transmits the damping to the outer cam 4 and the handle 2 to prevent the outer cam 4 and the handle 2 from rotating quickly.

[0030] When the anti-skid mechanical column locking mechanism is locked, the handle 2 is toggled, and the handle 2 drives the outer cam 4 to rotate through the square hole 11 and the limit block 12, so that the outer cam 4 and the inner cam 3 expand each other, thereby locking the steering column.

[0031] The anti-skid mechanical column locking mechanism is connected to the connecting shaft 1 by means of a spline 6 or a friction-increasing method, which can effectively prevent the outer cam 4 from slipping with the connecting shaft 1, so that the damping energy of the damper can always act on the handle 2 through the connecting shaft 1 and the outer cam 4, ensuring that the handle 2 is not easy to rotate quickly, thereby ensuring that the handle will not hit the hand. The problem that the outer cam of the existing steering column and the connecting shaft are easy to rotate and slip, resulting in the handle being easy to hit the hand is solved.

Claims

1. An anti-skid mechanical pipe column locking mechanism, which comprises a connecting shaft (1), a handle (2), an inner cam (3), an outer cam (4) and a damper (5), wherein one end of the connecting shaft (1) is provided with a handle (2), the inner side of the handle (2) is sleeved with the inner cam (3), and the outer cam (4) is sleeved between the inner cam (3) and the handle (2); the other end of the connecting shaft (1) is provided with a damper (5); the characteristics are as follows: The outer cam (4) is connected to the connecting shaft (1) via a spline (6).

2. An anti-skid mechanical pipe column locking mechanism, which consists of a connecting shaft (1), a handle (2), an inner cam (3), an outer cam (4) and a damper (5), wherein one end of the connecting shaft (1) is provided with a handle (2), the inner side of the handle (2) is sleeved with the inner cam (3), and the outer cam (4) is sleeved between the inner cam (3) and the handle (2); the other end of the connecting shaft (1) is provided with a damper (5); the characteristics are as follows: Assembly holes (7) are evenly distributed on the circumference of the outer cam (4), and friction-enhancing rubber strips (8) are inserted into the assembly holes (7).

3. The anti-skid mechanical pipe string locking mechanism according to claim 2, characterized in that: A locking bolt (9) is threadedly mounted in the assembly hole (7) on the outer side of the friction enhancing rubber strip (8), and a spring (10) is arranged between the locking bolt (9) and the friction enhancing rubber strip (8).

4. An anti-skid mechanical pipe string locking mechanism according to claim 1 or 2, characterized in that: The handle (2) is provided with a square hole (11).

5. The anti-skid mechanical pipe string locking mechanism according to claim 4, characterized in that: A limit block (12) is provided on the outer cam (4) on one side of the handle (2), and the outer cam (4) is connected to the handle (2) through the cooperation of the limit block (12) and the square hole (11).

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