CN215154981U

CN215154981U - Steering column capable of stably collapsing

Info

Publication number: CN215154981U
Application number: CN202121840134.6U
Authority: CN
Inventors: 税建敏; 陈洪财; 杨洪斌; 何锐; 费建华; 杨渝民; 王健; 苏大勇
Original assignee: SICHUAN MIANYANG SANLI CO Ltd
Current assignee: SICHUAN MIANYANG SANLI CO Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-12-14
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a steering column capable of stably collapsing, which comprises an upper tube column body and a lower tube column body which are sleeved with each other and can slide relatively; the device also comprises an adjusting mechanism for adjusting the axial position of the upper tube column body, a crumple mechanism for performing collision crumple protection, a mounting bracket and a support bracket; the mounting bracket is fixed with the frame, the supporting bracket is fixed with the upper tube column body, and the supporting bracket is connected with the mounting bracket through a rivet; the mounting bracket is provided with a plurality of guide long holes which extend along the axial direction of the upper pipe column body; the adjusting bracket for installing the adjusting mechanism is connected with the installing bracket by penetrating the guiding long hole through a guiding bolt. The utility model discloses a principle lies in through the cooperation of guide bolt and direction slot hole, has guaranteed the ulcerate direction of contracting of steering column when bursting to reduce the influence of the direction of contracting to the power peak value of bursting.

Description

Steering column capable of stably collapsing

Technical Field

The utility model relates to a car steering column, especially a can stably burst steering column of energy-absorbing that contracts when the collision.

Background

An automobile steering column generally has a collapsing function and aims to absorb energy to protect a driver in case of collision. The result of the function of realizing collision collapse has diversity, such as injection molding shearing, friction energy absorption and the like. However, in actual use, it was found that the collapse force of the directional column was unstable due to the difference in collision process. And the unstable fluctuation of the collapse force is still too large to cause injury to the driver.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a steering column capable of stably collapsing, which has a stable collapsing direction and reduces the influence of the collapsing direction on the peak value of the collapsing force.

For solving the above technical problem, the technical scheme of the utility model is that: a steering column capable of stably collapsing comprises an upper tube column body and a lower tube column body which are sleeved with each other and can slide relatively; the device also comprises an adjusting mechanism for adjusting the axial position of the upper tube column body, a crumple mechanism for performing collision crumple protection, a mounting bracket and a support bracket; the mounting bracket is fixed with the frame, the supporting bracket is fixed with the upper tube column body, and the supporting bracket is connected with the mounting bracket through a rivet; the mounting bracket is provided with a plurality of guide long holes which extend along the axial direction of the upper pipe column body; the adjusting bracket for installing the adjusting mechanism is connected with the installing bracket by penetrating the guiding long hole through a guiding bolt. The utility model discloses a principle lies in through the cooperation of guide bolt and direction slot hole, has guaranteed the ulcerate direction of contracting of steering column when bursting to reduce the influence of the direction of contracting to the power peak value of bursting.

As an improvement, the collapsing mechanism comprises a buffer bracket, and a tearing groove extending along the axial direction of the upper tube cylinder is formed on the buffer bracket; the buffer bracket is positioned on one side of the tearing groove and fixed with the mounting bracket, and the other side of the buffer bracket is connected with the supporting bracket. The collapse of the steering column is realized by the deformation of the support frame tearing buffer to collapse the middle and rear sections (the front section collapse force is provided by the rivet).

As an improvement, the supporting bracket is provided with a hook, and the buffering bracket is connected with the hook on the supporting bracket through a connecting hole. The connection between the support bracket and the buffering bracket is realized through the hook and the connecting hole, and the operation is simple and easy.

Preferably, the rivet is a self-plugging rivet, and a through hole is formed in the self-plugging rivet along the axis of the self-plugging rivet. The size of the peak value of the rivet collapse force can be adjusted through the diameter of the through hole.

As an improvement, the rivets are arranged in a left-right symmetrical mode along the axis of the upper tube column body. So that the stress on the two sides is uniform when the vehicle collapses.

Preferably, the guide long holes are three and arranged side by side, and the lengths of the three guide long holes are consistent. The plurality of guide holes improve the guidance.

Preferably, the guide long holes on two sides of the three guide long holes are closer to the upper tube column body than the guide long holes in the middle, so that the three guide bolts are arranged in a triangular shape and are more stable in guiding.

The utility model discloses an useful part lies in: the steering column with the structure improves the initial section crumpling force through the rivet, utilizes the buffer support to provide the rear section crumpling force, and the whole crumpling overshoot is guided through the guide bolt and the guide long hole in a matched mode, so that the crumpling direction is consistent, the change of the crumpling direction is avoided influencing the peak value of the crumpling force, the whole crumpling process is more stable, and the crumpling force is prevented from being fluctuated to cause injury to a driver.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a schematic view of the buffering frame of the present invention.

The labels in the figure are: the steering column comprises an upper steering column 1, an upper tube column body 2, an adjusting support 3, a guide bolt 4, a mounting support 5, a buffering support 6, a supporting support 7, a rivet 8 and a guide long hole 501.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.

As shown in fig. 1-4, the present invention comprises an upper tubular column 2 and a lower tubular column (not shown in the figures) which are sleeved and can slide relatively; the upper steering column 1 is connected with the upper tube column body 2 by a bearing, and the steering wheel is sleeved on the upper steering column 1. The device also comprises an adjusting mechanism for adjusting the axial position of the upper tube column body 2, a crumple mechanism for collision crumple protection, a mounting bracket 5 and a support bracket 7; the mounting bracket 5 is fixed with the frame, the supporting bracket 7 is fixed with the upper tube column body 2, and the supporting bracket 7 is connected with the mounting bracket 5 through a rivet 8; the mounting bracket 5 is provided with a plurality of guide long holes 501 extending along the axial direction of the upper tube column body 2; the adjusting bracket 3 for mounting the adjusting mechanism is connected to the mounting bracket 5 by a guide bolt 4 penetrating through the guide long hole 501. The guide bolt 4 is appropriately tightened to connect the mounting bracket 5 and the adjusting bracket 3 in normal use and to be slidable in the long guide hole 501 in collision and crush.

The adjusting mechanism is used for adjusting the axial position of the upper tube column body 2 and locking the upper tube column body 2 after the adjustment is completed. Its concrete structure and the utility model discloses do not take place to be correlated with, the utility model discloses in no longer give unnecessary details.

The collapsing mechanism comprises a buffer support 6, and a tearing groove extending along the axial direction of the upper tube column body 2 is formed in the buffer support 6; the buffer bracket 6 is positioned at one side of the tearing groove and fixed with the mounting bracket 5, and the other side is connected with the supporting bracket 7. The supporting bracket 7 is provided with a hook, and the buffering bracket 6 is connected with the hook on the supporting bracket 7 through a connecting hole. It is anticipated that the hook will be much stronger than the cushioning bracket 6 and will not deform during tearing or otherwise affect the collapsing force.

In this embodiment, the rivet 8 is preferably a blind rivet, and the blind rivet is provided with a through hole along an axis thereof. The number of the rivets 8 is two, and the rivets are arranged along the axis of the upper tube column body 2 in a bilateral symmetry mode. The long guide holes 501 are three and arranged side by side, and the three long guide holes 501 are uniform in length. The guide long holes 501 located on both sides of the three guide long holes 501 are closer to the upper tube column 2 than the guide long hole 501 located in the middle. That is, in the case of normal installation, the guide long holes 501 at both sides are positioned further upward, and the guide long hole 501 at the center is positioned further downward.

Normally, the adjusting bracket 3 is connected with the mounting bracket 5 through the guide bolt 4, the supporting bracket 7 is fixed with the upper tube column 2, and the buffering bracket 6 is divided into two parts by the tearing groove, one part is fixed with the mounting bracket 5, and the other part is fixed with the supporting bracket 7. When collision needs to be carried out and the energy is absorbed, firstly, the rivet 8 is sheared by the axial shearing force of the steering column, the adjusting bracket 3 can drive the guide bolt 4 to slide in the guide long hole 501 after the rivet 8 is broken so as to ensure the collapse direction of the steering column, and the supporting bracket 7 pulls the buffering bracket 6 to deform along the tear groove, so that the collapse force is provided to achieve the energy absorption purpose. In the whole collapsing process, the collapsing direction of the steering column is performed along the extending direction of the guide long hole 501, so that the influence of the collapsing direction change on the collapsing force is avoided.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. A steering column capable of stably collapsing comprises an upper tube column body and a lower tube column body which are sleeved with each other and can slide relatively; still including being used for adjusting the adjustment mechanism of upper tube cylinder axial position and colliding the mechanism that contracts of the protection, its characterized in that: the device also comprises a mounting bracket and a supporting bracket; the mounting bracket is fixed with the frame, the supporting bracket is fixed with the upper tube column body, and the supporting bracket is connected with the mounting bracket through a rivet; the mounting bracket is provided with a plurality of guide long holes which extend along the axial direction of the upper pipe column body; the adjusting bracket for installing the adjusting mechanism is connected with the installing bracket by penetrating the guiding long hole through a guiding bolt.

2. A crush-stable steering column according to claim 1, wherein: the collapsing mechanism comprises a buffer support, and a tearing groove extending along the axial direction of the upper tube column body is formed in the buffer support; the buffer bracket is positioned on one side of the tearing groove and fixed with the mounting bracket, and the other side of the buffer bracket is connected with the supporting bracket.

3. A crush-stable steering column according to claim 2, wherein: the support bracket is provided with a hook, and the buffer bracket is connected with the hook on the support bracket through a connecting hole.

4. A crush-stable steering column according to claim 1, wherein: the rivet is a self-plugging rivet, and a through hole is formed in the self-plugging rivet along the axis of the self-plugging rivet.

5. A crush-stable steering column according to claim 1, wherein: the rivets are arranged in a bilateral symmetry mode along the axis of the upper tube column body.

6. A crush-stable steering column according to claim 1, wherein: the guide long holes are arranged side by side, and the lengths of the three guide long holes are consistent.

7. A crush-stable steering column according to claim 6, wherein: the guide long holes positioned at two sides of the three guide long holes are closer to the upper tube column body than the guide long holes positioned in the middle.