CN216102417U - Device for coordinating contradiction between rigidity of front wall support of instrument beam and crumple requirement - Google Patents

Abstract

The utility model discloses a device for coordinating contradiction between rigidity and crumple requirements of a front wall bracket of an instrument beam, wherein the front wall bracket is of a U-shaped structure with an opening facing the instrument beam, and is fixed on the instrument beam through one side surface of the front wall bracket, and the device comprises: the front wall support integrally extends upwards or downwards along the vertical direction of the height of the vehicle body so as to increase the size, and the front wall support is provided with a plurality of inwards-concave crumpling guide grooves along the transverse direction of the width of the vehicle body. The utility model can coordinate the contradiction between the crumple performance and the structural rigidity of the front wall bracket, so that the instrument beam has excellent crumple performance and higher structural rigidity, thereby ensuring the safety and maintaining the comfort.

Description

Device for coordinating contradiction between rigidity of front wall support of instrument beam and crumple requirement

Technical Field

The utility model relates to the technical field of automobile parts. More specifically, the utility model relates to a device for coordinating contradiction between the rigidity of a front wall bracket of a cross beam of an instrument and the collapsing requirements.

Background

In an instrument panel assembly of a car, an instrument beam plays a main supporting role and provides mounting points for a steering column and a steering wheel, wherein the vertical vibration frequency of the steering wheel directly influences the comfort feeling of a driver, and the instrument beam assembly is required to have higher vertical rigidity at the driving side. On the other hand, the new collision safety regulation introduces 40% of front offset collision, and requires that the front wall of the instrument beam has good collapse energy absorption effect after being directly subjected to collision extrusion so as to prevent force from being transmitted to the steering column and the steering wheel, so that the steering wheel is invaded towards the direction of a driver, and personnel safety threat is caused. However, the good collapsing effect and the good rigidity of the cowl brace are basically a pair of irreconcilable contradictions, so that a simple and effective way is needed to solve the contradiction.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is to provide a device for coordinating contradiction between stiffness and crumple requirement of a front wall bracket of an instrument beam, which can coordinate contradiction between crumple performance and structural rigidity of the front wall bracket, so that the instrument beam has high structural rigidity while having excellent crumple performance, thereby ensuring safety and maintaining comfort.

To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided an apparatus for coordinating contradiction between rigidity and collapse demand of a cowl brace of an instrument cross member, the cowl brace being of a U-like structure opened toward the instrument cross member, the cowl brace being fixed to the instrument cross member through one of side surfaces thereof, comprising: the front wall support integrally extends upwards or downwards along the vertical direction of the height of the vehicle body so as to increase the size, and the front wall support is provided with a plurality of inwards-concave crumpling guide grooves along the transverse direction of the width of the vehicle body.

Preferably, the vertical height of the cowl brace is 3 times its lateral width.

Preferably, the crush guide groove is a V-shape that is concave.

Preferably, the plurality of crush boxes are provided at intervals on each lateral side of the cowl brace in the lateral direction.

Preferably, the U-shaped bottom edge of the front wall bracket is further provided with a plurality of collapse guiding holes.

The utility model at least comprises the following beneficial effects:

the utility model solves the problems of improving the inherent frequency of vertical vibration of a car instrument beam and a steering wheel and improving the backward invasion of the steering wheel during front small offset collision, decomposes the crumple performance and the rigidity index of the front wall support into the transverse direction and the vertical direction by reforming the structure of the front wall support, namely adopting special design for the front wall support, ensures the rigidity in the vertical direction, takes charge of crumple in the transverse direction, and can simultaneously ensure the rigidity and the crumple performance of the structure.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the cowl brace of the present invention.

Description of reference numerals:

1. the front wall bracket 2, the instrument beam 3, the crumple guide groove 4 and the crumple guide hole.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the present invention provides a device for coordinating contradiction between stiffness and crumple requirement of a dashboard cross member, wherein the dashboard support 1 is a U-shaped structure with an opening facing the dashboard cross member 2, and the dashboard support 1 is fixed on the dashboard cross member 2 through one side surface thereof, and the device comprises: before enclose support 1 along the vertical whole of automobile body height upwards or downwardly extending so that the size increases, before enclose support 1 vertical height for about 3 times of its transverse width, concrete according to the reasonable setting of actual environment structure, before enclose support 1 along the transverse ulcerate guiding groove 3 that contracts of a plurality of indents that is provided with of automobile body width, it is just a plurality of to burst V type that the guiding groove 3 that contracts for the indent 3 interval sets up and encloses 1 horizontal each side of support before. The U-shaped bottom edge of the front wall bracket 1 is also provided with a plurality of collapse guide holes 4.

In the technical scheme, the collapse performance and the rigidity index of the front wall bracket 1 are decomposed into the transverse direction and the vertical direction, the vertical direction ensures the rigidity and is responsible for collapse in the transverse direction, a in the figure 2 is the transverse direction, and b is the vertical direction, so that the contradiction between the rigidity and the collapse performance is reasonably solved, and the instrument beam 2 has good collision collapse safety and comfort performance. The crumple guide groove 3 is arranged in the transverse direction to guide the front wall bracket 1 to crumple towards the transverse direction, and meanwhile, the rigidity of the front wall bracket is weakened, and the front wall bracket is widened in the vertical direction to improve the rigidity of the front wall bracket.

The functions of the front wall bracket 1 are respectively decomposed along the transverse direction (the width direction of the vehicle body) and the vertical direction (the height direction of the vehicle body). In the vertical rigidity of a steering system, the front wall bracket 1 mainly plays a decisive role in the vertical rigidity, and the transverse rigidity has little influence on the comfort improvement of the steering system. During a small offset frontal collision, the cowl brace 1 collapses mainly in the X direction (the vehicle body from the front to the rear). As long as properly through structural design, set up the guiding groove 3 that contracts, let before enclose support 1 before to the X direction ground of contracting, also contract to the horizontal, can effectively reduce the impact force of conducting the steering wheel from surrounding support 1. On the basis, as long as the transverse rigidity of the front wall bracket 1 is weakened and the vertical rigidity is maintained, the rigidity of the part can be coordinated with the collapsing characteristic without conflict.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a before coordinated instrument crossbeam enclose device that support rigidity and ulcerate demand contradiction that contracts before enclose the support for opening U type structure towards the instrument crossbeam, before enclose the support and be fixed in on the instrument crossbeam through one of them side, its characterized in that includes: the front wall support integrally extends upwards or downwards along the vertical direction of the height of the vehicle body so as to increase the size, and the front wall support is provided with a plurality of inwards-concave crumpling guide grooves along the transverse direction of the width of the vehicle body.

2. The apparatus for coordinating conflicts in instrument beam cowl brace stiffness and crush requirements of claim 1, wherein the cowl brace has a vertical height that is 3 times its lateral width.

3. The apparatus for coordinating stiffness and crush requirements of an instrument cross-beam cowl brace according to claim 1 wherein the crush channel is concave V-shaped.

4. The apparatus for coordinating conflicts in stiffness and crush requirements of a dash mat cross-member as claimed in claim 1, wherein a plurality of said crush slots are spaced apart on each lateral side of the dash mat.

5. The apparatus for coordinating conflicts in stiffness and crush requirements of an instrument cross-beam cowl brace as defined in claim 1 wherein the U-shaped bottom edge of the cowl brace is further provided with a plurality of crush guide holes.

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