CN211107660U

CN211107660U - Steering column crumple mechanism and automobile

Info

Publication number: CN211107660U
Application number: CN201921875178.5U
Authority: CN
Inventors: 郭俐彤; 孙贺; 安迎迎
Original assignee: Evergrande New Energy Vehicle Technology Guangdong Co Ltd
Current assignee: Hengda hengchi new energy automobile technology (Guangdong) Co., Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-07-28
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a steering column mechanism and car that contracts bursts, steering column mechanism that contracts bursts includes: the main crumple assembly comprises a shell connected with a steering column and a main crumple assembly in sliding fit with the shell; the main crumple component comprises a first crumple sliding block and a first crumple energy absorption piece which is matched with the first crumple sliding block and the shell and is used for crumpling and absorbing energy; the first crumpling energy-absorbing part comprises a friction fit section, a penetrating section and an arc-shaped section which is bent in an arc shape; the friction fit section is arranged between the first crumpling slider and the shell, the penetrating section penetrates through the shell, and the friction fit section is connected with the penetrating section through the arc section. And the arc-shaped section is located in the collapsing direction of the steering column. The utility model discloses a steering column mechanism that contracts bursts's simple structure is compact, and space utilization is high, and the integrated level is high, realizes bursting and absorbing energy through sliding, and the power fluctuation range that contracts bursts is little, also does not have the fracture and takes place.

Description

Steering column crumple mechanism and automobile

Technical Field

The utility model relates to the field of automotive technology, especially, relate to a steering column mechanism and car that contracts burst.

Background

Along with the development of the automobile industry, the safety of automobiles is more and more emphasized by people, and a steering column is an important component of an automobile steering system, can transmit torque to a steering gear from a steering wheel, and also plays a role in supporting the steering wheel. According to the legal requirements, the steering column must have a passive safety function, namely, the living space of a driver can be enlarged through structural collapse when collision occurs, and the driver is prevented from being injured by a steering mechanism. At present, most steering columns realize collapse through friction, deformation and fracture among column parts. The existing structure is complex in machining, poor in integration level and strict in technological requirements, and once collision occurs, the collapsing force is difficult to control and large in fluctuation.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model discloses lie in overcoming prior art's the mechanism that contracts of bursting and processing comparatively complicacy, and the integrated level is poor, and is comparatively strict to the technological requirement, in case the collision takes place simultaneously, and the power of contracting of bursting is difficult to control, undulant big defect provides a steering column mechanism that contracts of bursting.

The technical scheme is as follows:

a steering column collapse mechanism comprising: the main crumple assembly comprises a shell connected with a steering column and a main crumple assembly in sliding fit with the shell; the main crumple component comprises a first crumple sliding block and a first crumple energy absorption piece which is matched with the first crumple sliding block and the shell and is used for crumpling and absorbing energy; the first crumpling energy-absorbing part comprises a friction fit section, a penetrating section and an arc-shaped section which is bent in an arc shape; the friction fit section is arranged between the first crumpling slider and the shell, the penetrating section penetrates through the shell, and the friction fit section is connected with the penetrating section through the arc section. And the arc-shaped section is located in the collapsing direction of the steering column.

The steering column crumple mechanism has the advantages of simple and compact structure, high space utilization rate and high integration level, realizes crumple and energy absorption through sliding, has small fluctuation range of the crumple force, and does not have fracture. Specifically, when the technical scheme is used, the shell and the main crumple component are connected with the steering column support, and the steering column support is fixed on the instrument board beam, so that the shell and the main crumple component are indirectly fixed. When collision happens, the deceleration of the vehicle is extremely high, a driver can continuously impact forwards quickly under the action of inertia to collide with a steering wheel, the steering wheel is impacted by a human body and pushes a shell connected with a steering column to move downwards along the axis, namely, the collapse direction is downward along the axis, a steering column support is fixed on an instrument panel beam and does not move, and at the moment, a first collapse slider and the steering column support are kept relatively static, namely, the first collapse slider and a first collapse energy absorption piece move relatively along the shell; the friction fit section is arranged between the first crumpling slider and the shell, so that friction force generated by relative movement of the first crumpling slider, the first crumpling slider and the shell can absorb part of crumpling energy; and, owing to wear to establish the section and be connected through segmental arc and friction fit section, so when the casing moves towards the direction of collapsing, the casing promotes the segmental arc production tensile deformation in the direction of collapsing, further realizes the energy-absorbing of collapsing. According to the technical scheme, in the whole crumpling process, relative friction and tensile deformation are utilized to realize crumpling energy absorption, redundant movement is not generated during crumpling, other parts do not deform due to failure or fracture except the first crumpling energy absorption piece, the fluctuation range of the crumpling force is small, and the product consistency is high.

According to the technical scheme, the friction fit section and the penetrating section are parallel to each other, so that the energy absorption effect of the arc-shaped section is better when the arc-shaped section is stretched.

In one embodiment, the shell is provided with an embedding groove for embedding the friction fit section, and the first collapse slider is provided with a first interference fit part in sliding fit with the friction fit section; the friction fit section is in interference fit with the shell and the first collapsing slider at the first interference fit part. Inlay the groove and play certain guide effect, first interference fit portion has guaranteed the relative fixation of first collapse slider and casing when not receiving the impact.

In one embodiment, the first crumple sliding block is a rectangular sliding block, the processing is simple, the cost is low, the first crumple energy absorption piece is a steel wire shaped like a Chinese character 'ji', and the steel wire shaped like the Chinese character 'ji' is arranged around the periphery of the rectangular sliding block, so that the first crumple sliding block can limit the first crumple energy absorption piece in the crumple sliding process.

In one embodiment, the shell is provided with a pushing part for stretching and deforming the arc-shaped section, and the pushing part is positioned on the side of the arc center of the arc-shaped section. When the steering column is impacted to drive the shell to move, the pushing part moves towards the arc-shaped section and pushes the arc-shaped section to generate stretching deformation.

In one embodiment, the pushing portion is in the shape of a circular arc protrusion, and the circular arc radian of the circular arc protrusion is matched with the bending radian of the arc section, so that the arc section is pushed to be stretched and deformed.

In one embodiment, the steering column support is connected with the shell and the first collapse sliding block through a connecting pin, and the first collapse sliding block is provided with a yielding groove penetrating through the connecting pin.

In one embodiment, the vehicle further comprises an auxiliary crush assembly in sliding fit with the shell; the auxiliary crumple assembly and the main crumple assembly are respectively arranged on two opposite sides of the steering column. The auxiliary crumpling component assists the main crumpling component in crumpling and absorbing energy.

In one embodiment, the auxiliary collapse assembly comprises a second collapse slider and a second collapse energy-absorbing piece which is matched with the second collapse slider and the shell and is used for assisting collapse energy absorption; the second crumple energy absorption piece at least comprises an auxiliary matching section arranged between the second crumple sliding block and the shell, and a second interference fit part in sliding fit with the auxiliary matching section is arranged on the second crumple sliding block; the auxiliary fitting section is in interference fit with the shell and the second collapse slider at the second interference fit part. The second collapse slider is similar to the first collapse slider in structure, and the second interference fit portion is similar to the first interference fit portion in structure. Namely, the auxiliary matching section and the friction matching section have the same function and structure and play a role in limiting and guiding.

In one embodiment, the second energy-absorbing crush member is an -shaped steel wire, and the second energy-absorbing crush member is arranged around the periphery of the second crush slider.

This technical scheme still provides an automobile, including steering column and as above any one the steering column mechanism that bursts, steering column collapse mechanism with the steering column cooperation. The automobile adopting the technical scheme has the advantages that the steering column crumpling mechanism is simple and compact in structure, high in space utilization rate and high in integration level, crumpling and energy absorption are achieved through sliding, the fluctuation range of the crumpling force is small, and no fracture occurs.

Drawings

Fig. 1 is a first schematic structural view of a steering column collapsing mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the first energy-absorbing member of FIG. 1;

FIG. 3 is a schematic structural view of the housing of FIG. 1;

FIG. 4 is a schematic structural view of the first crush slider of FIG. 1;

fig. 5 is a second schematic structural view of the collapsing mechanism of the steering column according to the embodiment of the present invention;

fig. 6 is a third schematic structural view of the collapsing mechanism of the steering column according to the embodiment of the present invention;

FIG. 7 is a schematic structural view of the second crush energy absorber of FIG. 6.

Description of reference numerals:

10. a housing; 11. embedding a groove; 12. a pushing part; 20. a primary collapsing assembly; 21. a first collapsing slider; 211. a first interference fit portion; 212. a yielding groove; 22. a first crumple energy-absorbing member; 221. a friction fit section; 222. a section is arranged in a penetrating way; 223. an arc-shaped section; 224. a first connection section; 30. a steering column support; 40. a connecting pin; 60. an auxiliary collapsing assembly; 61. a second collapsing slide block; 611. a second interference fit portion; 62. a second crumple energy-absorbing member; 621. an auxiliary mating section; 622. a second connection section.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

A steering column crush mechanism as shown in fig. 1-2, comprising: a housing 10 connected to a steering column, and a primary crush assembly 20 slidably fitted to the housing 10; the main crush module 20 comprises a first crush slider 21 and a first crush energy absorber 22 which is matched with the first crush slider 21 and the shell 10 and is used for crush energy absorption; the first crumple energy-absorbing piece 22 comprises a friction fit section 221, a penetrating section 222 and an arc-shaped section 223 which is curved in an arc shape; the friction fit section 221 is disposed between the first collapsing slider 21 and the housing 10, the penetrating section 222 is disposed on the housing 10 in a penetrating manner, and the friction fit section 221 and the penetrating section 222 are connected through the arc section 223. Also, the arc segment 223 is located in the collapsing direction of the steering column.

The steering column crumple mechanism of the embodiment has the advantages of simple and compact structure, high space utilization rate and high integration level, realizes crumple and energy absorption through sliding, has small fluctuation range of the crumple force, and does not have fracture. Specifically, in use, the present embodiment indirectly fixes the housing 10 and the main crush module 20 by connecting the housing 10 and the main crush module 20 to a column bracket and fixing the column bracket to an instrument panel cross member. After collision occurs, the deceleration of the vehicle is extremely high, under the action of inertia, a driver can continuously impact forwards quickly to collide with a steering wheel, the steering wheel is impacted by a human body, the shell 10 connected with a steering column can be pushed to move downwards along the axis, namely, the collapse direction is downward along the axis, the steering column support is fixed on the instrument panel beam and does not move, at the moment, the first collapse slider 21 and the steering column support are kept relatively static, namely, the first collapse slider 21 and the first collapse energy absorption piece 22 move relatively along the shell 10; since the friction fit section 221 is disposed between the first collapse slider 21 and the housing 10, a part of collapse energy absorption is realized by the friction force generated by the relative motion between the first collapse slider 21 and the housing 10; moreover, since the penetrating section 222 is connected to the friction fit section 221 through the arc section 223, when the housing 10 moves in the collapsing direction, the housing 10 pushes the arc section 223 to generate tensile deformation in the collapsing direction, thereby further realizing collapsing energy absorption. In the whole collapsing process, relative friction and tensile deformation are utilized to realize collapsing energy absorption, redundant movement is not generated during collapsing, other parts do not generate failure deformation or fracture except the first collapsing energy absorption piece 22, the fluctuation range of the collapsing force is small, and the product consistency is high. In addition, the penetrating section 222 is penetrated into the housing 10 and has a certain limiting and guiding function.

In this embodiment, the friction fit section 221 and the penetrating section 222 are parallel to each other, so that the energy absorption effect is better when the arc section 223 is stretched.

As shown in fig. 3 to 4, the housing 10 of the present embodiment is provided with an embedding groove 11 for embedding the friction-fit section 221, and the first collapse slider 21 is provided with a first interference-fit portion 211 slidably fitted with the friction-fit section 221; the friction-fit section 221 is interference-fitted with the housing 10 and the first crush slider 21 at the first interference-fit portion 211. The insertion groove 11 is provided along the collapsing direction of the housing 10, so that the insertion groove 11 also plays a certain guiding role. And when the first interference fit portion 211 is not impacted, the first crumple block 21 and the housing 10 are ensured to be fixed relatively, when the initial crumple after the impact occurs, the housing 10, the first crumple block 21 and the friction fit section 221 are loosened at the interference fit position, the housing 10 and the first crumple block 21 generate relative movement, and the housing 10 pushes the arc section 223 to generate tensile deformation in the crumple direction. Specifically, the first interference fit portion 211 is a protruding block protruding from the first collapsing slider 21, and a groove for fitting and interference fitting with the friction fit section is formed in the protruding block.

Specifically, the first collapse slider 21 according to the present embodiment is a rectangular slider, and is easy to process and low in cost, and the first collapse energy absorber 22 is a steel wire shaped like a Chinese character 'ji'. Therefore, the first crumple energy absorption piece 22 includes two sections of friction fit sections 221, two sections of penetrating sections 222, two sections of arc sections 223 and a first connection section 224, that is, the friction fit sections 221, the penetrating sections 222 and the arc sections 223 are respectively arranged on two sides of the first crumple energy absorption piece 22, so as to enhance the crumple energy absorption effect, and the two side structures are connected at the end parts of the friction fit sections 221 through the first connection section 224, so as to form a structure shaped like a Chinese character ji. The U-shaped steel wire is arranged around the periphery of the rectangular sliding block, the first connecting section 224 is tightly attached to the short side of one side of the rectangular sliding block, and the side of the first connecting section 224 is opposite to the collapsing direction, so that the first collapsing sliding block 21 also has a limiting effect on the first collapsing energy-absorbing part 22 in the collapsing and sliding process, and the situation that the arc-shaped section 223 cannot be stretched due to the fact that the first collapsing energy-absorbing part 22 integrally moves along with the shell 10 is avoided. In addition, the first interference fit portion 211 of the present embodiment is provided at both ends of the side edge of the first crush slider 21.

In this embodiment, the housing 10 is provided with a pushing portion 12 for stretching and deforming the arc-shaped segment 223, and the pushing portion 12 is located at the side of the arc center of the arc-shaped segment 223. When the steering column is impacted to drive the housing 10 to move, the pushing portion 12 moves towards the arc-shaped section 223 and pushes the arc-shaped section 223 to be stretched and deformed. Specifically, the pushing portion 12 is an arc-shaped protrusion, and the arc radian of the arc-shaped protrusion matches with the curvature radian of the arc-shaped segment 223, so as to facilitate pushing the arc-shaped segment 223 to deform in a stretching manner.

As shown in fig. 5, the present embodiment further includes a steering column support 30, the steering column support 30 is connected to the housing 10 and the first collapse slider 21 by a connection pin 40, and the first collapse slider 21 is provided with a recess 212 through which the connection pin 40 passes.

As shown in fig. 6, the present embodiment further includes an auxiliary crush assembly 60 slidably engaged with the housing 10; the secondary crush assembly 60 and the primary crush assembly 20 are disposed on opposite sides of the steering column, respectively. The secondary crush assembly 60 assists the primary crush assembly 20 in absorbing energy during crush.

Specifically, the auxiliary crush assembly 60 comprises a second crush slider 61, and a second crush energy absorber 62 which is matched with the second crush slider 61 and the shell 10 and is used for auxiliary crush energy absorption; the second collapse energy absorbing part 62 at least comprises an auxiliary fitting section 621 arranged between the second collapse slider 61 and the housing 10, and the second collapse slider 61 is provided with a second interference fitting part 611 in sliding fit with the auxiliary fitting section 621; the auxiliary fitting section 621 is interference-fitted with the housing 10 and the second crush slider 61 at the second interference-fitting portion 611. The second crush slider 61 is similar in structure to the first crush slider 21, and the second interference fit portion 611 is similar in structure to the first interference fit portion 211. Namely, the auxiliary fitting section 621 and the friction fitting section 221 have the same function and structure, and play a role in limiting and guiding.

As shown in fig. 7, the second crumple energy absorbing member 62 of the present embodiment is a steel wire shaped like "", so that the second crumple energy absorbing member 62 includes two sections of auxiliary fitting sections 621 and a second connecting section 622 that are disposed in parallel, the two sections of auxiliary fitting sections 621 are respectively located at two opposite sides of the second crumple slider 61, and the ends of the two sections of auxiliary fitting sections 621 are connected by the second connecting section 622, the second crumple energy absorbing member 62 is disposed around the outer periphery of the second crumple slider 61, the second connecting section 622 is disposed closely attached to one short side of the second crumple slider 61, and the second connecting section 622 is disposed at the side opposite to the crumple direction, so that the second crumple slider 61 also acts as a limit to the second crumple energy absorbing member 62 during the crumple sliding process.

The embodiment also provides an automobile, which comprises a steering column and the steering column crumpling mechanism, wherein the steering column crumpling mechanism is matched with the steering column. The automobile of this embodiment adopts above-mentioned steering column mechanism that bursts, and simple structure is compact, and space utilization is high, and the integrated level is high, realizes bursting and contracts and absorb energy through sliding, and the fluctuation range of the power of bursting is little, also does not have the fracture and takes place.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A steering column collapsing mechanism, comprising: the main crumple assembly comprises a shell connected with a steering column and a main crumple assembly in sliding fit with the shell; the main crumple assembly comprises a first crumple slider and a first crumple energy absorption piece matched with the first crumple slider and the shell; the first crumpling energy-absorbing piece comprises a friction fit section, a penetrating section and an arc-shaped section; the friction fit section is arranged between the first crumpling slider and the shell, the penetrating section penetrates through the shell, and the friction fit section is connected with the penetrating section through the arc section.

2. The steering column collapsing mechanism according to claim 1, wherein the housing is provided with an embedding groove for embedding the friction fit section, and the first collapsing slider is provided with a first interference fit portion which is in sliding fit with the friction fit section; the friction fit section is in interference fit with the shell and the first collapsing slider at the first interference fit part.

3. The steering column crush mechanism of claim 1, wherein the first crush lobe is a rectangular lobe and the first crush energy absorber is a steel wire having a shape of a Chinese character ji.

4. The steering column collapsing mechanism according to claim 1, wherein the housing is provided with a pushing portion for stretching and deforming the arc-shaped section, and the pushing portion is located on a side of an arc center of the arc-shaped section.

5. The steering column collapsing mechanism according to claim 4, wherein the pushing portion is a circular arc protrusion, and a circular arc radian of the circular arc protrusion matches a bending radian of the arc section.

6. The steering column collapsing mechanism according to claim 1, further comprising a steering column support, wherein the steering column support is connected to the housing and the first collapsing slider through a connecting pin, and the first collapsing slider is provided with a recess through which the connecting pin passes.

7. The steering column crush mechanism of any of claims 1-6, further comprising a secondary crush assembly slidably engaged with the housing; the auxiliary crumple assembly and the main crumple assembly are respectively arranged on two opposite sides of the steering column.

8. The steering column crush mechanism of claim 7, wherein the auxiliary crush assembly includes a second crush slider and a second crush energy absorber cooperating with both the second crush slider and the housing and adapted to assist in absorbing energy from the crush; the second crumple energy absorption piece at least comprises an auxiliary matching section arranged between the second crumple sliding block and the shell, and a second interference fit part in sliding fit with the auxiliary matching section is arranged on the second crumple sliding block; the auxiliary fitting section is in interference fit with the shell and the second collapse slider at the second interference fit part.

9. The steering column crush mechanism of claim 8, wherein the second crush energy absorber is an steel wire.

10. An automobile comprising a steering column and a steering column collapse mechanism according to any one of claims 1 to 9, the steering column collapse mechanism being engaged with the steering column.