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CN-114852160-B - Sleeve assembly and steering column

CN114852160BCN 114852160 BCN114852160 BCN 114852160BCN-114852160-B

Abstract

The invention discloses a sleeve assembly used in a steering column and the steering column, which comprise a sleeve, a cover cap, an energy absorbing element and a joint element, wherein one side of the sleeve is provided with a mounting part with a mounting cavity, the energy absorbing element is arranged in the mounting cavity, the energy absorbing element comprises a top plate, the joint element is provided with a protruding block, the protruding block is provided with a protruding block inclined plane, the protruding block penetrates through a cover cap through hole in the cover cap and stretches into the mounting cavity, and in an initial state, the rear end of the top plate is positioned between the upper end and the lower end of the protruding block inclined plane, and a preset gap is reserved between the protruding block inclined plane and the rear end of the top plate. According to the sleeve assembly and the steering column disclosed by the invention, the damping force generated by the top plate of the energy-absorbing element is stable in the deformation and collapse process, so that the stable damping force can be provided, and the stable energy-absorbing effect is achieved.

Inventors

  • CHEN XUMING
  • XUE ZHENGJIE
  • GAO YUESHAN
  • GU JIA

Assignees

  • 蒂森克虏伯普利斯坦汽车零部件（上海）有限公司

Dates

Publication Date
20260505
Application Date
20210204

Claims (20)

  1. 1. A sleeve assembly for use in a steering column, comprising a sleeve (1), a cover (3), an energy absorbing element (5) and an engagement element (4); One side of the sleeve (1) is provided with a mounting part (2) with a mounting cavity (21), the energy absorbing element (5) is arranged in the mounting cavity (21), and the cover cap (3) is connected with the sleeve (1) and covers an opening of the mounting cavity (21); The energy absorption element (5) comprises a top plate (51) capable of deforming and collapsing, the joint element (4) is provided with a lug (41) capable of driving the top plate (51) to deform and collapse, and the lug (41) is provided with a lug inclined surface (411) capable of contacting the top plate (51) so as to drive the top plate (51) to deform obliquely downwards; the top plate (51) has a top plate rear end (511) and a top plate front end (512) which are oppositely arranged, and the bump inclined surface (411) gradually extends obliquely upward in a direction from the top plate rear end (511) to the top plate front end (512); the engagement element (4) is located outside the cover (3), and the projection (41) passes through a cover through hole (31) on the cover (3) and protrudes into the mounting cavity (21); The bump (41) is at least partially located above the top plate rear end (511), and the bump (41) is at least partially located behind the top plate rear end (511); In an initial state, the top plate rear end (511) is located between the upper end and the lower end of the bump inclined surface (411), and a preset gap is formed between the bump inclined surface (411) and the top plate rear end (511).
  2. 2. A sleeve assembly for use in a steering column according to claim 1, The engagement element (4) is further provided with a toothed plate (42) for engagement with a locking block (75) in the handle assembly (7).
  3. 3. A sleeve assembly for use in a steering column according to claim 1, A guide plate (52) is also obliquely extended backwards and downwards on the rear end (511) of the top plate; In the initial state, the guide plate (52) is positioned below the bump inclined surface (411).
  4. 4. A sleeve assembly for use in a steering column according to claim 2, The included angle between the lug inclined surface (411) and the top plate (51) is 10-80 degrees.
  5. 5. A sleeve assembly for use in a steering column according to claim 1, The energy absorption element (5) further comprises a first side plate (53) and a second side plate (54) which are arranged at intervals, and the top plate (51) is connected between the upper ends of the first side plate (53) and the second side plate (54); -said first side plate (53) and said second side plate (54) are respectively located on a bottom cavity wall (211) of said mounting cavity (21); the top plate (51) is positioned below the top cavity wall (212) of the mounting cavity (21), and a preset distance is reserved between the top plate (51) and the top cavity wall (212); The cover (3) also has a cover flap (33) therein capable of blocking forward movement of the first side plate (53) and the second side plate (54).
  6. 6. A sleeve assembly for use in a steering column according to claim 5, Front ends of the first side plate (53) and the second side plate (54) are respectively in contact with the cover baffle plate (33).
  7. 7. A sleeve assembly for use in a steering column according to claim 5, The front end of the mounting cavity (21) is provided with a front side cavity wall (214), the front side cavity wall (214) is in contact with the cover baffle plate (33), and the front ends of the first side plate (53) and the second side plate (54) are respectively in contact with the front side cavity wall (214).
  8. 8. A sleeve assembly for use in a steering column according to claim 5, -Said first side plate (53) is located on the side close to said sleeve (1) and-said second side plate (54) is located on the side close to said engagement element (4); Rear ends of the first side plate (53) and the second side plate (54) respectively extend out of the rear side of the rear end (511) of the top plate; the rear end of the mounting cavity (21) is provided with a rear side cavity wall (213); the rear end of the first side plate (53) is in contact with the rear side cavity wall (213), and a channel for the protrusion (41) to enter and exit is reserved between the rear end of the second side plate (54) and the rear side cavity wall (213).
  9. 9. Sleeve assembly for use in a steering column according to claim 8, wherein the rear side cavity wall (213) is an elastic sheet sloping towards the energy absorbing element (5) side.
  10. 10. The sleeve assembly for use in a steering column of claim 8 wherein, The top of the rear end of the second side plate (54) is provided with a side plate inclined surface (541), and a preset gap is reserved between the side plate inclined surface (541) and the lug inclined surface (411).
  11. 11. The sleeve assembly for use in a steering column according to claim 5, wherein front ends of the first side plate (53) and the second side plate (54) each extend upwardly with a reinforcing riser (55), the reinforcing risers (55) extending upwardly above the top plate (51).
  12. 12. The sleeve assembly for use in a steering column of claim 11, The top surface of the reinforcing riser (55) is in contact with the top cavity wall (212).
  13. 13. Sleeve assembly for use in a steering column according to any of claims 1-12, in which the top plate (51) is provided with a weakening through hole (513).
  14. 14. Sleeve assembly for use in a steering column according to claim 13, in which a plurality of said weakening through holes (513) are provided on the top plate (51) at intervals.
  15. 15. Sleeve assembly for use in a steering column according to any of claims 1-12, in which the top plate (51) is provided with a weakening groove (514).
  16. 16. The sleeve assembly for use in a steering column according to claim 15, wherein the weakening groove (514) extends along the length of the top plate (51).
  17. 17. Sleeve assembly for use in a steering column according to claim 15, wherein the left and right side edges of the top plate (51) are provided with the weakening grooves (514), respectively.
  18. 18. A sleeve assembly for use in a steering column according to claim 15, wherein the upper and lower surfaces of the top plate (51) are provided with the weakening grooves (514), respectively.
  19. 19. The sleeve assembly for use in a steering column according to claim 15, wherein the weakening groove (514) is continuously arranged on the top plate (51); Or, the weakening grooves (514) are intermittently arranged on the top plate (51).
  20. 20. The sleeve assembly for use in a steering column of claim 15, wherein a groove depth of said weakening groove (514) is varied.

Description

Sleeve assembly and steering column Technical Field The invention relates to the technical field of vehicle steering devices, in particular to a sleeve assembly used in a steering column and the steering column. Background The steering device of the vehicle comprises a steering column, wherein the steering column comprises a steering shaft, a sleeve, a mounting bracket, a handle and the like. The steering shaft passes through the sleeve, the sleeve is arranged in the mounting bracket, and the locking bolt on the handle passes through the guide groove of the mounting bracket, so that the sleeve can be driven to swing to adjust the angle. In order to meet the requirement of collision energy absorption, a crumple strip is generally adopted on the sleeve in the prior art, when collision occurs, the sleeve moves backwards relative to the mounting bracket, and the crumple strip is blocked by the mounting bracket or a fixing frame on the handle, so that the crumple strip deforms and crumples, and energy absorption is carried out. However, when the crush strip is crushed, the damping force generated by the crush strip is unstable, the magnitude of the damping force is greatly related to the shape of the position when the crush strip is deformed, and the performance of the crush strip is still to be improved. Disclosure of Invention The invention aims to provide a sleeve assembly and a steering column, which can provide stable damping force when an energy absorption element is deformed and collapsed so as to achieve a stable energy absorption effect. The technical scheme of the invention provides a sleeve assembly for a steering column, which comprises a sleeve, a cover cap, an energy absorption element and a joint element; One side of the sleeve is provided with a mounting part with a mounting cavity, the energy absorbing element is arranged in the mounting cavity, and the cover cap is connected with the sleeve and covers the opening of the mounting cavity; the energy absorption element comprises a top plate capable of deforming and collapsing, the joint element is provided with a lug capable of driving the top plate to deform and collapse, and the lug is provided with a lug inclined surface capable of contacting with the top plate so as to drive the top plate to deform obliquely downwards; the top plate has a top plate rear end and a top plate front end which are oppositely arranged, and the lug inclined surface gradually and obliquely extends upwards in the direction from the top plate rear end to the top plate front end; The joint element is positioned on the outer side of the cover, and the lug penetrates through the cover through hole on the cover and extends into the mounting cavity; The lug is at least partially positioned above the rear end of the top plate, and the lug is at least partially positioned behind the rear end of the top plate; in the initial state, the rear end of the top plate is positioned between the upper end and the lower end of the lug inclined plane, and a preset gap is reserved between the lug inclined plane and the rear end of the top plate. In one alternative, the engagement member is further provided with a toothed plate for engagement with a locking block in the handle assembly. In one optional technical scheme, a guide plate is also obliquely extended backwards and downwards on the rear end of the top plate; when in the initial state, the guide plate is positioned below the lug inclined plane. In one optional technical scheme, an included angle between the lug inclined plane and the top plate is 10-80 degrees. In one optional technical scheme, the energy absorption element further comprises a first side plate and a second side plate which are arranged at intervals, and the top plate is connected between the upper ends of the first side plate and the second side plate; the first side plate and the second side plate are respectively positioned on the bottom cavity wall of the installation cavity; the top plate is positioned below the top cavity wall of the mounting cavity, and a preset distance is arranged between the top plate and the top cavity wall; The cover also has a cover flap therein capable of blocking forward movement of the first side plate and the second side plate. In one optional aspect, the front ends of the first side plate and the second side plate are respectively contacted with the cover baffle. In one optional solution, the front end of the mounting cavity has a front side cavity wall, the front side cavity wall is in contact with the cover baffle, and the front ends of the first side plate and the second side plate are respectively in contact with the front side cavity wall. In one alternative, the first side plate is located on a side adjacent to the sleeve, and the second side plate is located on a side adjacent to the engagement element; the rear ends of the first side plate and the second side plate respectively extend out of the rear side of the rear end of