Anti-impact mechanism of steering column

Abstract

The application provides an anti-impact mechanism of a steering column, which comprises a pull fork, a brake block subassembly, the pull fork is arranged in a groove in a supporting sleeve, the pull fork comprises a profiled hole for penetrating a handle shaft and two front forks, the profiled hole is used for ensuring that the pull fork is tightly matched with the handle shaft; the brake block is arranged in the supporting sleeve; an opening handle, the handle shaft drives the pull fork to rotate clockwise, the front fork is away from an arc-shaped ear of the brake block, the brake block moves downward to the bottom end under the action of a spring and is in the same horizontal plane with a brake boss, so that the anti-impact function is realized; a closing handle, the handle shaft drives the pull fork to rotate counterclockwise, the front fork is tightly contacted with the arc-shaped ear, the brake block is pulled upward to the bottom end which is higher than the brake boss, the spring is in a compressed state, a space is left, the brake boss on a C-shaped supporting block can pass through, and the collapsing function is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile steering column adjusting system, in particular to a kind of anti-impact mechanism of steering column. BACKGROUND

[0002] The length adjusting limit stopper of existing steering column is usually plastic piece connected by pull rivet or bolt, so the impact force that length adjusting limit stopper can withstand during length adjusting is limited, thus, when operator abuses, it is easy to cause length adjusting stopper to fall off, thereby affecting the length adjusting function of steering column. SUMMARY

[0003] To solve the problems in the background art, the present application provides an anti-impact mechanism of steering column.

[0004] The technical scheme of the present application is as follows:

[0005] An anti-impact mechanism of steering column, comprising a yoke and a brake stopper subassembly, the yoke is arranged in a groove in a support sleeve, the yoke comprises a profiled hole for inserting a handle shaft and two front forks, the profiled hole is used to ensure the close fit of the yoke and the handle shaft, the two front forks are arranged in parallel and symmetrically, and the front forks are arranged as a whole with smooth surface; the brake stopper subassembly is arranged in the support sleeve, the brake stopper subassembly comprises a stopper pin, a cover plate, a spring and a brake stopper, the cover plate is provided with a stopper pin mounting hole, the brake stopper is provided with a stopper mounting hole at the top end, the stopper pin is fixed in the brake stopper after passing through the stopper pin mounting hole, the spring and the stopper mounting hole in sequence, and the top end of the cover plate is fixedly installed on the support sleeve, the brake stopper is provided with arc-shaped ears at both sides of the upper end, the two front forks are arranged below the arc-shaped ears, and the brake stopper is in the same straight line with a brake boss arranged on a C-shaped support block of an inner column pipe; when the handle is opened, the handle shaft drives the yoke to rotate clockwise, the front forks move away from the arc-shaped ears of the brake stopper, and the brake stopper moves downward to the bottom end to be in the same horizontal plane with the brake boss under the action of the spring; when the handle is closed, the handle shaft drives the yoke to rotate counterclockwise, the front forks are in close contact with the arc-shaped ears, and the brake stopper is pulled upward to the bottom end to be higher than the brake boss.

[0006] As a preferred embodiment of the present application, the stopper pin and the stopper pin mounting hole on the cover plate are in clearance fit.

[0007] As a preferred embodiment of the present application, the stopper pin and the stopper mounting hole on the brake stopper are in interference fit.

[0008] As a preferred embodiment of the present application, when the handle is closed, the spring is in compressed state.

[0009] As the preferred of the present application, two cover plate mounting holes are further formed on the cover plate, and the top end of the cover plate is fixedly installed on the support sleeve by bolts

[0010] The beneficial effects of the present application are as follows:

[0011] The present application provides an anti-impact mechanism of a steering column, which utilizes the layout of a handle shaft, a support sleeve and a C-shaped support block on the steering column, has simple structure and reasonable layout, when the handle is opened, the handle shaft drives the pull fork to rotate clockwise, the front fork moves away from the arc-shaped ear of the brake block, the brake block moves downward to the bottom end to be at the same horizontal plane with the brake boss under the action of the spring and the gravity of the brake block, and the brake block can block the movement of the stop boss to realize the anti-impact function when the operator abuses; when the handle is closed, the handle shaft drives the pull fork to rotate counterclockwise, the front fork is in close contact with the arc-shaped ear, and the brake block is pulled upward to the bottom end higher than the brake boss to avoid the space to ensure that the collapse function of the steering column is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0012] Other objects and results of the present application will become more apparent and easily understood with reference to the following description and accompanying drawings, and with the more complete understanding of the present application. In the drawings:

[0013] Figure 1 It is a schematic view of the overall assembly of the present application.

[0014] Figure 2 It is a top view with the support bracket removed. Figure 1

[0015] Figure 3 It is an exploded view of Figure 2

[0016] Figure 4 It is a schematic view when the handle is closed with the support sleeve removed. Figure 2

[0017] It is a structure view of the brake block sub-assembly in the present application. Figure 5

[0018] It is an exploded view of Figure 6 Figure 5

[0019] Figure 7 It is an assembly view of the handle shaft and the pull fork in the present application.

[0020] Figure 8 It is a schematic view when the handle is opened with the support sleeve removed. Figure 2

[0021] It is a front view of Figure 9 Figure 8

[0022] ​​​​​​Figure 10 is a front view. Figure 4

[0023] Figure 11 is a structural diagram of the support sleeve in the application.

[0024] The reference signs are as follows: the pull fork 1, the brake block subassembly 2, the support sleeve 3, the groove 31, the handle shaft 4, the profiling hole 11, the front fork 12, the block pin 21, the cover plate 22, the spring 23, the brake block 24, the block pin mounting hole 221, the cover plate mounting hole 222, the block mounting hole 241, the bolt 5, the arc-shaped lug 242, the inner column pipe 6, the C-shaped support block 61, the brake boss 611, the bracket 7. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the technical solutions of the present application and their advantages, the present application will be described in detail below with reference to the drawings, but is not used to limit the protection scope of the present application.

[0026] In the description of the present application, it should be noted that the terms "inner", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Referring to Figure 3 , an anti-impact mechanism of a steering column, comprising a pull fork 1 and a brake block subassembly 2, the pull fork 1 is arranged in the groove 31 in the support sleeve 3 (see Figure 11 ), the pull fork 1 comprises a profiling hole 11 for inserting the handle shaft 4 and two front forks 12 (see Figure 7 ), the profiling hole 11 is used to ensure the close fit of the pull fork 1 and the handle shaft 4, and the two front forks 12 are arranged in parallel and symmetrically, and the front forks 12 are arranged as a whole.

[0029] Referring to Figure 1 ​、 Figure 5 and Figure 6 As shown in the figure: the brake block subassembly 2 is arranged in the support sleeve 3, the brake block subassembly 2 comprises a block pin 21, a cover plate 22, a spring 23 and a brake block 24, the cover plate 22 is provided with a block pin mounting hole 221, the brake block 24 is provided with a block mounting hole 241 at the top end, the block pin 21 is sequentially fixed in the brake block 24 through the block pin mounting hole 221, the spring 23 and the block mounting hole 241, the top end of the cover plate 22 is fixedly installed on the support sleeve 3, the brake block 24 is provided with an arc-shaped ear 242 at the upper end of both sides, the two front forks 12 are arranged below the arc-shaped ear 242, and the brake block 24 is in the same straight line with the brake boss 611 arranged on the C-shaped support block 61 of the inner column pipe 6 (see Figure 4 ).

[0030] Further, the block pin 21 and the block pin mounting hole 221 on the cover plate 22 are in clearance fit.

[0031] Further, the block pin 21 and the block mounting hole 241 on the brake block 24 are in interference fit.

[0032] Further, the cover plate 22 is also provided with a cover plate mounting hole 222, and the top end of the cover plate 22 is fixedly installed on the support sleeve 3 through the bolt 5 (see Figure 2 ).

[0033] The assembly and use of the present application will be described in detail below in combination with the drawings:

[0034] Referring to Figure 1 and Figure 3 , first, the inner column pipe 6 is installed in the support sleeve 3, the handle shaft 4 is sequentially threaded through the bracket 7, the support sleeve 3, the puller fork 1, the support sleeve 3, the bracket 7, and then is tightened by using the handle assembly, the brake block subassembly 2 is installed in the support sleeve 3 in advance, and is located above the C-shaped support block 61 of the inner column pipe 6;

[0035] Referring to Figure 8 and Figure 9 , when the handle is opened, the handle shaft 4 drives the puller fork 1 to rotate clockwise, the front fork 12 moves away from the arc-shaped ear 242 of the brake block 24, the brake block 24 moves downward under the action of the spring 23 and the gravity of the brake block 24 itself, and is in the same straight line with the brake boss 611 arranged on the C-shaped support block 61 of the inner column pipe 6, and when the operator abuses, the brake boss 611 on the C-shaped support block 61 is blocked, so that the impact prevention function can be realized;

[0036] Referring to Figure 10 and Figure 4When the handle is closed, the handle shaft 4 drives the puller fork 1 to rotate counterclockwise, the front fork 12 is in close contact with the arc-shaped ear 242, the brake block 24 is pulled up to the bottom end higher than the brake boss 611, the spring 23 is in a compressed state, and the space is avoided to ensure that the brake boss 611 on the C-shaped supporting block 61 can pass through, and the collapsing function of the steering column is realized.

[0037] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An anti-intrusion mechanism for a steering column, characterized by: The application relates to a support sleeve, a handle shaft, a puller fork, a brake block subassembly and a C-shaped support block, wherein the puller fork is arranged in a groove in the support sleeve, the puller fork comprises a profiled hole for penetrating a handle shaft and two front forks, the profiled hole is used for ensuring close matching between the puller fork and the handle shaft, the two front forks are arranged in parallel and symmetrically, and the front forks are arranged in a whole smooth mode; the brake block subassembly is arranged in the support sleeve, the brake block subassembly comprises a block pin, a cover plate, a spring and a brake block, a block pin mounting hole is formed in the cover plate, a block mounting hole is formed in the top end of the brake block, the block pin is fixed in the brake block after penetrating the block pin mounting hole, the spring and the block mounting hole in sequence, the top end of the cover plate is fixedly installed on the support sleeve, arc-shaped ears are arranged on the two sides of the upper end of the brake block, the two front forks are arranged below the arc-shaped ears, and the brake block is in the same straight line with a brake boss arranged on the C-shaped support block of the inner column pipe; when the handle is opened, the handle shaft drives the puller fork to rotate clockwise, the front forks are away from the arc-shaped ears of the brake block, the brake block moves downward to the bottom end and is in the same horizontal plane with the brake boss under the action of the spring; when the handle is closed, the handle shaft drives the puller fork to rotate counterclockwise, the front forks are in close contact with the arc-shaped ears, the brake block is pulled upward to the bottom end and is higher than the brake boss.

2. An anti-impact mechanism for a steering column according to claim 1, characterized in that: The block pin and the block pin mounting hole on the cover plate are in clearance fit.

3. An anti-impact mechanism for a steering column as defined in claim 1, characterized in that: The block pin and the block mounting hole on the brake block are in interference fit.

4. The anti-impact mechanism of a steering column according to claim 1, characterized in that: When the handle is closed, the spring is in a compressed state.

5. The anti-impact mechanism of a steering column according to claim 1, characterized in that: Two cover plate mounting holes are further formed in the cover plate, and the top end of the cover plate is fixedly installed on the support sleeve through bolts.

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