Novel steering column crumple adjusting mechanism

Abstract

The utility model discloses a novel steering column crumple adjusting mechanism which comprises a steering column, a locking wheel set, a handle shaft and an adjusting support, the adjusting support is fixedly connected with a whole vehicle tubular beam through a bolt, the steering column is assembled in the adjusting support, the steering column comprises an inner tubular column and an outer sleeve, and the inner tubular column is fixedly connected with the outer sleeve. The inner pipe column is arranged in the outer sleeve, and the inner pipe column is in clearance fit with the outer sleeve; the bottom of the outer sleeve is fixedly connected with the worm gear shell to form a whole, an open groove is formed in the bottom of the outer sleeve, two clamping arms are arranged below the end of the outer sleeve and symmetrically arranged according to the open groove, the handle shaft is connected with the locking wheel set and then penetrates through the adjusting support and the steering column, and the tail end of the inner column is connected with the worm gear. According to the scheme, an inner collapse type sleeve structure is adopted, mechanical parts can be effectively reduced, and noise generated by collision during adjustment is reduced.

Description

Technical Field

[0001] The present invention relates to the field of automobile steering columns, and specifically to a novel steering column collapse regulating mechanism. Background Art

[0002] In order to satisfy the driver's driving experience, the steering column generally has angular and axial adjustment functions. The smoothness of the adjustment force and the magnitude of the force are important performance indicators of the column adjustment. The steering column is fixed to the vehicle beam by bolting the mounting point. The deformation of the beam will affect the force of the steering column mounting bracket, change the gap between the various mating parts of the steering column, and thus generate stress, which seriously affects the smoothness during adjustment. Therefore, the design of the mating friction pair is crucial. The simpler the structure, the easier it is to control the force value during adjustment, and it can more easily meet the feel requirements of end customers. Utility Model Content

[0003] In order to solve the problems existing in the above-mentioned background technology, the present invention provides a novel steering column collapse adjustment mechanism.

[0004] A novel steering column collapse adjustment mechanism comprises a steering column, a locking wheel set, a handle shaft, and an adjustment bracket, wherein the adjustment bracket is fixedly connected to the whole vehicle tube beam by bolts, the steering column is assembled inside the adjustment bracket, the steering column comprises an inner column and an outer sleeve, the inner column is arranged inside the outer sleeve, and the inner column and the outer sleeve are clearance-matched; the bottom of the outer sleeve is fixedly connected to a worm gear housing to form a whole, the bottom of the outer sleeve is provided with a slot, and two clamping arms are provided below the end of the outer sleeve, and the two clamping arms are symmetrically arranged according to the slot, the handle shaft is connected to the locking wheel set and then passes through the adjustment bracket and the steering column, and the end of the inner column is connected to the worm gear;

[0005] An axial guide groove is provided in the middle of the inner pipe column, and a circumferential clamping groove is provided in the middle of the guide groove. The clamping groove is vertically arranged to the guide groove. A limiting ring is also arranged on the inner pipe column. A clamping block is provided in the inner ring spacing array of the limiting ring. The limiting ring is finally fixed to the inner pipe column by clamping the clamping block in the clamping groove. An inner recess is also provided on the limiting ring, and the inner recess is clamped in the guide groove. A positioning hole is also provided on the outer sleeve, and a positioning bolt is installed in the positioning hole. The bottom of the positioning bolt is located in the guide groove.

[0006] Furthermore, the inner tube column and the outer sleeve are filled with grease, and the grease is used to reduce the friction between the two, improve the smoothness of the displacement, and reduce noise;

[0007] Furthermore, an upper cover is provided at the end of the outer sleeve, and the upper cover protrudes from the cross-section of the outer sleeve. Side panels are provided on both sides of the end of the outer sleeve, and the side panels protrude from the cross-section of the outer sleeve. The outermost side panels are in the same horizontal plane as the outermost side of the clamping arm, and the upper cover and the two side panels are arranged in a finished U-shape.

[0008] The beneficial effects of this program are as follows:

[0009] 1. The inner-collapse sleeve structure can effectively reduce mechanical parts and reduce the noise generated by collision during adjustment.

[0010] 2. By setting the guide groove and the positioning bolt, the inner pipe column can only move in one direction of the guide groove. The collapse force during collision and collapse is only the friction force when the inner pipe column and the outer sleeve are tightly embraced. There is no sudden change in force value caused by flipping around the adjustment bracket, which is easier to control.

[0011] 3. By designing the limit ring structure, the daily axial limit function can be effectively realized, and in the event of a collision, the impact force can easily break the limit ring, realizing the collapse function, reducing risks and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the external structure

[0013] Figure 2 This is a schematic diagram of the joint between the inner pipe column and the outer sleeve.

[0014] Figure 3 Bottom view of the joint

[0015] Figure 4 This is a schematic diagram of the inner column structure.

[0016] Figure 5 Schematic diagram of the limit ring structure

[0017] Steering column 1, locking wheel set 2, handle shaft 3, adjustment bracket 4, inner column 5, outer sleeve 6, worm gear housing 7, slot 8, clamping arm 9, guide groove 10, clamping groove 11, limiting ring 12, clamping block 13, inner concave part 14, positioning hole 15, positioning bolt 16, upper cover 17, side plate 18. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings

[0019] Combination Figure 1 Figure 3A novel steering column 1 collapse adjustment mechanism comprises a steering column 1, a locking wheel set 2, a handle shaft 3, and an adjustment bracket 4. The adjustment bracket 4 is fixedly connected to the whole vehicle tube beam by bolts. The steering column 1 is assembled inside the adjustment bracket 4. The steering column 1 comprises an inner column 5 and an outer sleeve 6. The inner column 5 is arranged inside the outer sleeve 6, and the inner column 5 and the outer sleeve 6 are clearance-matched; the bottom of the outer sleeve 6 is fixedly connected to a worm gear housing 7 to form a whole. The bottom of the outer sleeve 6 is provided with a slot 8. Two clamping arms 9 are provided below the end of the outer sleeve 6. The two clamping arms 9 are symmetrically arranged according to the slot 8. After the handle shaft 3 is connected to the locking wheel set 2, it passes through the adjustment bracket 4 and the steering column 1. The end of the inner column 5 is connected to the worm gear;

[0020] Combination Figure 4 Figure 5 An axial guide groove 10 is provided in the middle of the inner pipe column 5, and a circumferential clamping groove 11 is provided in the middle of the guide groove 10. The clamping groove 11 is arranged perpendicular to the guide groove 10. A limit ring 12 is also arranged on the inner pipe column 5. The inner ring spacing array of the limit ring 12 is provided with a clamping block 13. The limit ring 12 is finally fixed to the inner pipe column 5 by clamping the clamping groove 11 through the clamping block 13. An inner concave portion 14 is also provided on the limit ring 12. The inner concave portion 14 is clamped in the guide groove 10. The inner concave portion is used to place the limit ring to rotate on the inner pipe column. A positioning hole 15 is also provided on the outer sleeve 6. A positioning bolt 16 is installed in the positioning hole 15. The bottom of the positioning bolt 16 is located in the guide groove 10. Grease is filled between the inner pipe column 5 and the outer sleeve 6;

[0021] Combination Figure 2 The end of the outer sleeve 6 is also provided with an upper cover 17, and the upper cover 17 protrudes from the cross section of the outer sleeve 6. Side plates 18 are provided on both sides of the end of the outer sleeve 6, and the side plates 18 protrude from the cross section of the outer sleeve 6. The outermost side plates 18 are in the same horizontal plane as the outermost side plates 18 of the clamping arm 9. The upper cover 17 and the two side plates 18 are arranged in a finished shape. The upper cover is used to contact the limit ring and impact the limit ring when colliding.

[0022] The scheme works as follows:

[0023] The relative position relationship between the clamping slot 11 and the end of the guide slot 10 is designed according to the axial adjustment distance required by the host manufacturer.

[0024] Under normal conditions, the locking wheel set is a peak-to-valley fit between the positive and negative cams, and the handle adjusts the locking wheel set 2 to achieve the squeezing of the adjustment bracket 4 by the clamping arm 9, and finally achieves the holding force of the adjustment bracket 4 on the steering column 1. The end of the outer sleeve 6 in this structure is designed with a slot 8, so the size of its end has some movable space, and the inner column 5 can be assembled. After the inner column 5 is assembled, a limit ring 12 is added to complete the final assembly.

[0025] Since the structure as a whole is connected to the automobile pipe beam through the adjusting bracket 4, the adjusting bracket 4 is a fixed point during the adjustment process, and since the outer sleeve and the worm gear housing form a whole, the outer sleeve is also a relative fixed point.

[0026] During axial adjustment, the friction pair in this structure is only the end of the inner tube column 5 and the outer sleeve 6. The slot 8 and the clamping arm 9 at the end of the outer sleeve 6 can adjust the gap through the extrusion of the locking wheel group 2. The space between the inner tube column 5 and the outer sleeve 6 is filled with grease, which can effectively meet the requirements of different axial adjustment forces.

[0027] During angular adjustment, the friction pair in this structure becomes the friction between the end of the outer sleeve 6 and the adjustment bracket 4. Specifically, it is the friction between the two side walls of the adjustment bracket 4 and the side plates 18 at the end of the outer sleeve 6 and the clamping arm 9. Since there are at least two fulcrums on the same plane, the magnitude of the angular adjustment force can be effectively controlled.

[0028] During a collision, the peak force generated by the collision will break the block 13 of the limiting ring 12 , and the limiting ring 12 will no longer play a limiting role, and the inner pipe column 5 will collapse into the outer sleeve 6 as a whole.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel steering column collapse adjustment mechanism, comprising a steering column, a locking wheel set, a handle shaft, and an adjustment bracket, wherein the adjustment bracket is fixedly connected to the vehicle tube beam by bolts, the steering column is assembled inside the adjustment bracket, the steering column comprises an inner column and an outer sleeve, the inner column is arranged inside the outer sleeve, and the inner column and the outer sleeve are clearance-matched; the bottom of the outer sleeve is fixedly connected to the worm gear housing to form a whole, the bottom of the outer sleeve is provided with a slot, and two clamping arms are provided below the end of the outer sleeve, and the two clamping arms are symmetrically arranged according to the slot, the handle shaft is connected to the locking wheel set and then passes through the adjustment bracket and the steering column, and the end of the inner column is connected to the worm gear; it is characterized in that An axial guide groove is provided in the middle of the inner pipe column, and a circumferential clamping groove is provided in the middle of the guide groove. The clamping groove is vertically arranged to the guide groove. A limiting ring is also arranged on the inner pipe column. A clamping block is provided in the inner ring spacing array of the limiting ring. The limiting ring is finally fixed to the inner pipe column by clamping the clamping block in the clamping groove. An inner recess is also provided on the limiting ring, and the inner recess is clamped in the guide groove. A positioning hole is also provided on the outer sleeve, and a positioning bolt is installed in the positioning hole. The bottom of the positioning bolt is located in the guide groove.

2. A novel steering column collapse adjustment mechanism as claimed in claim 1, characterized in that: The space between the inner pipe column and the outer sleeve is filled with grease.

3. A novel steering column collapse adjustment mechanism as claimed in claim 1, characterized in that: An upper cover is also provided at the end of the outer sleeve, and the upper cover protrudes from the cross section of the outer sleeve. Side panels are provided on both sides of the end of the outer sleeve, and the side panels protrude from the cross section of the outer sleeve. The outermost sides of the side panels are in the same horizontal plane as the outermost sides of the clamping arms, and the upper cover and the two side panels are arranged in a finished U-shape.

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