CN212195361U

CN212195361U - Vehicle energy absorption box

Info

Publication number: CN212195361U
Application number: CN202020362984.9U
Authority: CN
Inventors: 张哲�; 张伟明; 陈越洋; 肖灵芝; 亓峰; 张振磊; 戢平; 王炜杰; 施丽君
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-12-22
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a vehicle energy-absorbing box, including an energy-absorbing section of thick bamboo, the tip of an energy-absorbing section of thick bamboo is equipped with the mounting panel, the internal face and/or the outer wall of an energy-absorbing section of thick bamboo are equipped with spiral strengthening rib. By adopting the structure, the reinforcing ribs on the inner wall surface and/or the outer wall surface of the energy absorption cylinder are arranged into a spiral shape, the spiral structure is more consistent with the internal force distribution rule, the impact energy and the stress can be better absorbed and buffered, and the safety of vehicles and personnel in the vehicles can be better guaranteed.

Description

Vehicle energy absorption box

Technical Field

The utility model relates to a vehicle energy-absorbing part technical field, concretely relates to vehicle energy-absorbing box.

Background

The vehicle energy absorption box is generally arranged between a buffer beam and a vehicle body longitudinal beam of a vehicle, when the vehicle is subjected to impact force, the buffer beam firstly plays a role of blocking as rigid collision avoidance, the energy absorption box can buffer and absorb the impact energy and stress so as to reduce the impact force as much as possible, and if the energy absorption box cannot play a good role of absorbing the energy, the safety of the vehicle and personnel in the vehicle is inevitably seriously influenced.

Therefore, how to provide a vehicle crash box with better impact energy and stress absorption and buffering performance still remains a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vehicle energy-absorbing box, this vehicle energy-absorbing box have better absorption and shock-absorbing capacity to striking energy and stress.

In order to solve the technical problem, the utility model provides a vehicle energy-absorbing box, including an energy-absorbing section of thick bamboo, the tip of an energy-absorbing section of thick bamboo is equipped with the mounting panel, the internal face and/or the outer wall of an energy-absorbing section of thick bamboo are equipped with spiral strengthening rib.

By adopting the structure, the reinforcing ribs on the inner wall surface and/or the outer wall surface of the energy absorption cylinder are arranged into a spiral shape, the spiral structure is more consistent with the internal force distribution rule, the impact energy and the stress can be better absorbed and buffered, and the safety of vehicles and personnel in the vehicles can be better guaranteed.

Optionally, the number of the reinforcing ribs on the inner wall surface and/or the outer wall surface of the energy absorption cylinder is multiple, and at least two reinforcing ribs exist in each reinforcing rib on the wall surface on the same side and intersect with each other to form an intersection point.

Optionally, the energy absorption cylinder is square or hexagonal in cross section.

Optionally, the reinforcing ribs on the inner wall surface and/or the outer wall surface of each cylinder wall of the energy absorption cylinder are axially symmetrically arranged.

Optionally, the energy absorption cylinders are connected with the reinforcing ribs corresponding to the wall surfaces on the same side of the two circumferentially adjacent cylinder walls.

Optionally, the density of the reinforcing ribs on the inner wall surface and/or the outer wall surface of the tube section of the energy absorption tube close to the vehicle head is greater than the density of the reinforcing ribs on the inner wall surface and/or the outer wall surface of other tube sections of the energy absorption tube.

Optionally, the density of the reinforcing ribs on the inner wall surface and/or the outer wall surface of the energy absorption cylinder is gradually increased along the direction close to the vehicle head.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a vehicle energy absorber according to the present invention;

FIG. 2 is a view showing a distribution of ribs on an inner wall surface or an outer wall surface of one of the cylinder walls of FIG. 1;

fig. 3 is a force analysis diagram of the reinforcing bar.

The reference numerals in fig. 1-3 are illustrated as follows:

1, an energy absorption cylinder and 11 reinforcing ribs;

2, mounting plates and 21 mounting holes;

and (A) intersection point.

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 accompanying drawings and specific embodiments.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of an embodiment of a vehicle energy absorber provided by the present invention, fig. 2 is a distribution diagram of reinforcing ribs on an inner wall surface or an outer wall surface of a cylinder wall of fig. 1, and fig. 3 is a force analysis diagram of the reinforcing ribs.

As shown in fig. 1, the utility model provides a vehicle energy absorption box, which comprises an energy absorption cylinder 1, wherein the end part of the energy absorption cylinder 1 can be fixedly provided with a mounting plate 2 by welding and other modes, the mounting plate 2 is usually only arranged at one axial end of the energy absorption cylinder 1, and the mounting plate 2 is provided with a plurality of mounting holes, so that the vehicle energy absorption box and a vehicle body longitudinal beam can be fixedly mounted; spiral reinforcing ribs 11 are arranged on the inner wall surface and/or the outer wall surface of the energy absorption cylinder 1.

The research of the applicant finds that the spiral structure is more consistent with the distribution rule of internal force, and a plurality of naturally formed spiral structures exist in nature, such as storm eyes, shells and the like. Based on this, the utility model discloses set up the strengthening rib 11 of 1 internal face of a vehicle energy-absorbing section of thick bamboo and/or outer wall into the spiral, can absorb, cushion impact energy and stress better, and then can form better guarantee to vehicle and the inside personnel's of vehicle safety.

The number of the ribs 11 on the inner wall surface and/or the outer wall surface of the energy-absorbing cylinder 1 may be one, for example, when the cross section of the energy-absorbing cylinder 1 is circular, the ribs 11 on the inner wall surface and/or the outer wall surface of the energy-absorbing cylinder 1 may be one, and the ribs 11 may extend from one end to the other end to form an arrangement structure of the ribs 11 in a spiral spring-like pattern.

Alternatively, the number of the ribs 11 on the inner wall surface and/or the outer wall surface of the energy absorbing tube 1 may be plural, and in this case, the ribs 11 on the wall surface on the same side (inner side or outer side) may intersect with each other or may not intersect with each other.

In the embodiment of the present invention, it is preferable to adopt an intersection scheme, that is, at least two reinforcing ribs 11 exist in each reinforcing rib 11 on the wall surface of the same side to intersect, so as to form an intersection point a. With the structure, when the energy absorption tube 1 is subjected to overlarge stress at the intersection point A, the force can bypass the intersection point A and be transmitted to the adjacent reinforcing ribs 11, so that the buffering and absorption performance of the energy absorption tube 1 on the impact force can be improved.

The embodiment of the utility model provides a do not inject the cross sectional shape of an energy-absorbing section of thick bamboo 1, it can be for circular, square, hexagon, octagon etc. when concrete implementation, technical personnel in the field can set up according to actual need. Preferably, the cross section of the energy absorption cylinder 1 can be square or hexagonal, because the energy absorption cylinder 1 with square and hexagonal cross sections has larger energy absorption and smaller impact force peak value, the energy absorption performance is better, and the assembly difficulty of the energy absorption cylinder 1 with square and hexagonal structure is relatively lower from the perspective of the assembly process.

The square and the hexagon are regular polygons or nearly regular polygons, that is, the lengths of all sides can be generally consistent, and the connection part of all the cylinder walls of the energy absorption cylinder 1 can be provided with a fillet transition or not, and can be determined by combining the actual situation.

Further, as shown in fig. 2, the reinforcing ribs 11 on the inner wall surface and/or the outer wall surface of each wall of the energy-absorbing tube 1 may be axially symmetrically arranged, so that when an impact force is applied, the force distribution of a single wall of the energy-absorbing tube 1 may be more uniform.

With continued reference to fig. 1, the corresponding ribs 11 on the wall surface of the same side (inside or outside) of the two circumferentially adjacent cylinder walls of the energy-absorbing cylinder 1 can be connected, so that the inside and/or outside of the energy-absorbing cylinder 1 can form a relatively complete rib frame, which has positive effects on improving the overall structural strength and energy-absorbing performance of the energy-absorbing cylinder 1.

For the energy absorption tube 1, the impact forces to be borne by different axial parts are different, and generally, the tube section relatively close to the vehicle head is stressed greatly, and the tube section relatively far away from the vehicle head is stressed less. Based on this, the embodiment of the utility model provides a can set up the density of the internal face of the section of thick bamboo section that is close to the locomotive and/or the strengthening rib 11 of outer wall to be greater than the internal face of 1 other section of thick bamboo sections of energy-absorbing and/or the density of the strengthening rib 11 of outer wall, like this, can pertinence ground improve the energy-absorbing performance of the great section of thick bamboo section of atress.

Specifically, the energy absorption cylinder 1 can be axially divided into a plurality of cylinder sections, each cylinder section is provided with a reinforcing rib 11 density, and the reinforcing ribs 11 of the cylinder sections relatively close to the vehicle head direction in each cylinder section can be higher in density; or, along the direction that is close to the locomotive, the density of the internal face of an energy-absorbing section of thick bamboo 1 and/or the strengthening rib 11 of outer wall face can set up to the crescent, and this kind of design more accords with the law that internal force gradually changes and distributes, and can play certain guide effect to the impact that receives, and then can improve the structural performance of whole energy-absorbing box.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The vehicle energy absorption box is characterized by comprising an energy absorption cylinder (1), wherein a mounting plate (2) is arranged at the end part of the energy absorption cylinder (1), and spiral reinforcing ribs (11) are arranged on the inner wall surface and/or the outer wall surface of the energy absorption cylinder (1).

2. The vehicle crash box according to claim 1, characterized in that the number of the ribs (11) on the inner wall surface and/or the outer wall surface of the crash tube (1) is plural, and at least two of the ribs (11) on the wall surface on the same side intersect to form an intersection point (a).

3. A vehicle crash box according to claim 2, characterized in that said crash tube (1) has a square or hexagonal cross-section.

4. A vehicle crash box according to claim 3, characterized in that the ribs (11) of the inner wall surface and/or the outer wall surface of each wall of the crash box (1) are arranged axially symmetrically.

5. The vehicle crash box according to claim 3, characterized in that the crash cans (1) are connected with the corresponding reinforcing ribs (11) on the wall surface of the same side of the two circumferentially adjacent can walls.

6. The vehicle energy absorption box according to any one of claims 1 to 5, characterized in that the density of the reinforcing ribs (11) on the inner wall surface and/or the outer wall surface of the tube section of the energy absorption tube (1) close to the vehicle head is greater than the density of the reinforcing ribs (11) on the inner wall surface and/or the outer wall surface of other tube sections of the energy absorption tube (1).

7. The vehicle crash box according to claim 6, characterized in that the density of the reinforcing ribs (11) on the inner wall surface and/or the outer wall surface of the crash tube (1) is gradually increased in a direction toward the vehicle head.