CN215706612U

CN215706612U - Steering column collision crumple structure

Info

Publication number: CN215706612U
Application number: CN202121582264.4U
Authority: CN
Inventors: 刘囿麟; 丛海波; 邓显川; 谭斌斌
Original assignee: Chongqing Branch of DFSK Motor Co Ltd
Current assignee: Chongqing Branch of DFSK Motor Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-01
Anticipated expiration: 2031-07-13

Abstract

The utility model relates to a collision crumple structure of a steering column, which comprises the steering column, a positioning block and an installation support, wherein the positioning block is provided with a clamping groove, the installation support is clamped in the clamping groove, the included angle between the side surface of the clamping groove and the central shaft of the steering column ranges from 5 degrees to 10 degrees, the clamping groove of the positioning block, the installation support and the shaft of the steering column form a certain angle, and when the steering column is impacted and receives lateral force vertical to the axial direction, the installation support has a guiding effect in the inclined clamping groove of the positioning block, so that the sliding friction resistance is smaller, and the crumple resistance is reduced; the design of the injection molding notch of the mounting bracket can ensure that the nylon pin cannot be clamped in the grooves of the positioning block and the bracket to increase the collapse force after the nylon pin is collided and broken, so that the bracket can be quickly separated; the steel band structure that contracts bursts can guarantee that the steering column contracts continuously and stably along the direction of stress, and after collision is completed, the steering column can be kept fixed on the automobile body and cannot fall off, so that a driver is protected better.

Description

Steering column collision crumple structure

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a collision crumple structure of a steering column.

Background

The steering column is an important part of an automobile steering system, and the collapsible steering column plays an important role in protecting the safety of a driver. In vehicle collision, the steering column triggers the collapsing mechanism under the action of a certain force value to enable the steering column main body to collapse and move towards the direction of the vehicle head, so that a survival space for a driver is generated, and the life safety of the driver is guaranteed. Therefore, the crumple mechanism should have the characteristics that the smaller trigger force can trigger the crumple mechanism, the larger contraction space and the contraction process are rapid and smooth, so that the impact force borne by a driver is reduced to the greatest extent, and the safety of the driver is protected.

In the prior art, a V-shaped notch of a steering column mounting bracket and grooves on two sides of a positioning block are positioned, nylon is injected through a pre-drilled hole between the V-shaped notch and the positioning block to fasten the positioning block and the bracket, and the positioning block is fastened on a vehicle body through a bolt to realize stable mounting of a steering column. When collision happens, the steering column and the bracket thereof are impacted, the injection molding nylon pin is sheared off, and the whole steering column contracts and moves after the bracket is separated from the positioning block, so that a collision safety structure is formed. This structure has the following disadvantages: (1) the grooves on the two sides of the positioning block run parallel to the steering column shaft, and under the action of an offset force which is generated by collision and is perpendicular to the axial direction, the mounting bracket and the positioning block can be mutually extruded to increase the friction force between the mounting bracket and the positioning block, so that the collapse resistance is increased, the collapse effect is reduced, and the injury to a driver caused by impact is easily caused; (2) after being broken, the injection molding pin in the injection molding hole can be clamped in the positioning block and the groove of the mounting bracket, so that the sliding friction force is increased, the collapse of the steering column is difficult to guarantee, and the reduction of the human body impact is not facilitated; (3) the locating piece can probably deviate from completely to the support after the collision takes place, and steering column loses the installation fulcrum and drops this moment, crowds the space that accounts for the driver, is unfavorable for driver safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: to locating piece both sides draw-in groove trend and steering column axle parallel among the prior art, under the axial skew effort of perpendicular to that the collision produced, installing support and locating piece can extrude mutually and make the frictional force increase, lead to the resistance grow that bursts, make the driver receive the problem that the impact led to the fact the injury, provide a steering column collision structure that bursts.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a collision crumple structure of a steering column comprises the steering column, a positioning block and a mounting support, wherein a clamping groove is formed in the positioning block, the mounting support is clamped in the clamping groove, and the included angle between the side face of the clamping groove and the central shaft of the steering column ranges from 5 degrees to 10 degrees.

According to the utility model adopting the technical scheme, the included angle between the inner side surface of the clamping groove on the positioning block and the central shaft of the steering column is set to be 5-10 degrees, when the steering column is subjected to a lateral force vertical to the axial direction in the collision, the sliding friction resistance is smaller under the guiding action of the mounting bracket on the inclined clamping groove of the positioning block, compared with the problem that in the prior art, the clamping groove of the positioning block is parallel to the steering column shaft, under the action of an offset force vertical to the axial direction generated by collision, the mounting bracket and the positioning block can be mutually extruded to increase the friction force, so that the crumple resistance is increased, the crumple effect is reduced, and the driver is injured by the impact.

Furthermore, the edge of installing support is equipped with V type groove, the marginal joint in V type groove is in the draw-in groove, V type groove joint is more firm.

Furthermore, be equipped with the breach on the edge, the breach is used for pouring into nylon into, can make the nylon round pin after the collision fracture, can not block increase the collapse power in the recess of locating piece and support, makes the support break away from fast.

Furthermore, the quantity of breach is 3 at least and follows edge interval arrangement, a plurality of nylon after pouring into nylon are moulded plastics the round pin and are followed edge interval arrangement for the collision takes place before the steering column is connected with the automobile body firmly, uses reliably.

Furthermore, the mounting bracket is provided with a clamping hole, and further comprises a clamping seat and a steel belt, wherein the length direction of the steel belt is parallel to the direction of the central shaft, the middle part of the steel belt is bent, the clamping seat clamps the bent part of the steel belt and is clamped in the clamping hole, one end of the steel belt, which is close to the positioning block, is used for being fixedly connected with the automobile body, the steel belt can ensure that the steering column continuously and stably contracts along the stress direction, and after collision is completed, the steering column can be kept to be fixed on the automobile body and cannot fall off, so that a driver can be better protected.

Furthermore, a waist hole is formed in one end, used for being fixedly connected with the automobile body, of the steel belt, a mounting hole is formed in the positioning block, one end, used for being fixedly connected with the automobile body, of the steel belt is attached to the end face of the positioning block, the waist hole is matched with the mounting hole, used for being matched with a bolt, of the steel belt and the positioning block are fixed to the automobile body, the steel belt and the positioning block are integrally fixed to the automobile body, and the installation is simple and convenient.

Furthermore, the number of the positioning blocks and the number of the steel belts are 2, the positioning blocks and the steel belts are arranged on two sides of the steering column in an axisymmetric manner, and the steering column is stably connected with the vehicle body through the two positioning blocks and the steel belts.

Furthermore, the steering wheel adjusting device further comprises an adjusting handle, wherein the adjusting handle is used for adjusting the position of the steering column and further adjusting the steering wheel to a proper position.

The utility model has the beneficial effects that: the positioning block clamping groove and the mounting bracket form a certain angle with the steering column shaft, and when the steering column is subjected to a lateral force vertical to the axial direction in the event of collision, the mounting bracket has a guiding effect on the positioning block inclined clamping groove, so that the sliding friction resistance is smaller, and the collapse resistance is reduced; the design of the injection molding notch of the mounting bracket can ensure that the nylon pin cannot be clamped in the grooves of the positioning block and the bracket to increase the collapse force after the nylon pin is collided and broken, so that the bracket can be quickly separated; the steel band structure that contracts bursts can guarantee that the steering column contracts continuously and stably along the direction of stress, and after collision is completed, the steering column can be kept fixed on the automobile body and cannot fall off, so that a driver is protected better.

Description of the drawings:

FIG. 1 is a top view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic sectional view taken along line A-A of FIG. 1;

FIG. 4 is a bottom view of a portion of the mounting bracket of the present invention;

FIG. 5 is an enlarged view of M of FIG. 1;

FIG. 6 is a top view of a locating block of the present invention;

FIG. 7 is a front view of a locating block of the present invention;

FIG. 8 is a left side view of a locating block of the present invention;

the labels in the figure are: 1-steering column, 2-positioning block, 3-steel belt, 4-mounting bracket, 5-first clamping seat, 6-second clamping seat, 7-adjusting handle, 11-central shaft, 21-clamping groove, 22-mounting hole, 31-waist hole, 41-edge, 42-notch, 43-clamping hole and 211-inner side surface.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 to 8, a steering column collision collapse structure comprises a steering column 1, a positioning block 2, a steel belt 3, a mounting bracket 4, a first clamping seat 5, a second clamping seat 6 and an adjusting handle 7. The mounting bracket 4 is fixedly connected with the outer side surface of the steering column 1 through a bolt, and an adjusting handle 7 is arranged at the joint of the mounting bracket and the steering column 1 and used for adjusting the position of the steering column 1; the mounting bracket 4 is of a plate-shaped structure and is axisymmetrical with respect to a central shaft 11 of the steering column 1, two V-shaped grooves axisymmetrical with respect to the central shaft 11 are arranged at the edge of the mounting bracket 4, a plurality of notches 42 are arranged at the edge 41 of the V-shaped grooves, and two clamping holes 43 axisymmetrical with respect to the central shaft 11 are arranged at the middle position of the mounting bracket 4.

As shown in fig. 6-8, the positioning block 2 is V-shaped, the middle portion thereof is provided with a mounting hole 22, the edges thereof are provided with slots 21, the upper and lower surfaces of the positioning block 2 are parallel to each other, the included angle between the side surface 211 of the slot 21 and the upper and lower surfaces of the positioning block 2 is α, the range of α is 5 ° to 10 °, during installation, the edge 41 of the V-shaped slot is clamped in the slot 21, and then nylon is injected into the notch 42 to fasten the mounting bracket and the positioning block together.

As shown in fig. 3, the length direction of the steel strip 3 is parallel to the direction of the central axis 11, the middle part of the steel strip 3 is bent, the first clamping seat 5 and the second clamping seat 6 clamp the bent part of the steel strip 3 and are clamped in the clamping hole 43, one end of the steel strip 3 is provided with a waist hole 31, the end is attached to the end surface of the positioning block 2, and the waist hole 31 and the mounting hole 22 are matched with a bolt to fix the steel strip 3 and the positioning block 2 on the vehicle body.

When collision happens, the injection molding nylon pin is sheared, the mounting bracket 4 is separated from the positioning block 2, the steel belt 3 is continuously stressed to deform and pull the steering column 1 to be continuously stressed and contracted along the axial direction until the collision is finished, and a crumple energy-absorbing structure is formed together.

In the embodiment, the positioning block clamping groove and the mounting bracket form a certain angle with the steering column shaft, and when the steering column is subjected to a lateral force vertical to the axial direction in the event of collision, the mounting bracket has a guiding effect on the positioning block inclined clamping groove, so that the sliding friction resistance is smaller, and the collapse resistance is reduced; the design of the injection molding notch of the mounting bracket can ensure that the nylon pin cannot be clamped in the grooves of the positioning block and the bracket to increase the collapse force after the nylon pin is collided and broken, so that the bracket can be quickly separated; the steel band structure that contracts bursts can guarantee that the steering column contracts continuously and stably along the direction of stress, and after collision is completed, the steering column can be kept fixed on the automobile body and cannot fall off, so that a driver is protected better.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a steering column collision structure of collapsing, includes steering column (1), locating piece (2) and installing support (4), be equipped with draw-in groove (21) on locating piece (2), installing support (4) joint is in draw-in groove (21), its characterized in that: the included angle between the side surface (211) of the clamping groove (21) and the central shaft (11) of the steering column (1) ranges from 5 degrees to 10 degrees.

2. The steering column crash collapse structure according to claim 1, wherein: the edge of installing support (4) is equipped with V type groove, edge (41) joint in V type groove is in draw-in groove (21).

3. The steering column crash collapse structure according to claim 2, wherein: and a notch (42) is arranged on the edge (41), and the notch (42) is used for injecting nylon.

4. The steering column crash collapse structure according to claim 3, wherein: the notches (42) are at least 3 in number and are spaced along the edge (41).

5. The steering column crash collapse structure according to claim 1, wherein: the mounting bracket (4) is provided with a clamping hole (43), and further comprises a clamping seat and a steel belt (3), the length direction of the steel belt (3) is parallel to the direction of the central shaft (11), the middle part of the steel belt (3) is bent, the clamping seat clamps the bent part of the steel belt (3) and is clamped in the clamping hole (43), and one end, close to the positioning block (2), of the steel belt (3) is fixedly connected with a vehicle body.

6. The steering column crash collapse structure according to claim 5, wherein: one end that steel band (3) were used for with automobile body fixed connection is equipped with waist hole (31), be equipped with mounting hole (22) on locating piece (2), steel band (3) be used for with automobile body fixed connection's one end with the terminal surface of locating piece (2) is laminated mutually, waist hole (31) with mounting hole (22) be used for with the bolt cooperation will steel band (3) with locating piece (2) are fixed on the automobile body.

7. The steering column crash collapse structure according to claim 5, wherein: the number of the positioning blocks (2) and the number of the steel belts (3) are 2, and the positioning blocks and the steel belts are arranged on two sides of the steering column (1) in an axisymmetric manner.

8. The steering column crash collapse structure according to claim 1, wherein: the steering column is characterized by further comprising an adjusting handle (7), wherein the adjusting handle (7) is used for adjusting the position of the steering column (1).