CN210454721U

CN210454721U - Energy-absorbing automobile bumper

Info

Publication number: CN210454721U
Application number: CN201920903151.6U
Authority: CN
Inventors: 田运章
Original assignee: Guangzhou Tongli Plastic Products Co Ltd
Current assignee: Jiangmen Fuyou New Material Co.,Ltd.
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-05-05
Anticipated expiration: 2029-06-14

Abstract

The utility model relates to an energy-absorbing automobile bumper, which comprises a bumper shell, a honeycomb layer, a bottom plate layer and a barrier; the honeycomb layer is arranged between the bumper shell and the bottom plate layer, and the upper surface and the lower surface of the honeycomb layer are respectively connected with the bumper shell and the bottom plate layer; the honeycomb layer is obliquely arranged between the bumper shell and the bottom plate layer, namely an included angle formed by the center line of the honeycomb chamber and the bumper shell or the bottom plate layer is smaller than 90 degrees; the bottom plate layer is used for connecting the energy-absorbing automobile bumper with an automobile frame. The utility model discloses an in the product, when bumping, the deformation and the lateral displacement of bumper shell, separation thing, honeycomb material and wherein filler absorb the collision energy, guarantee driver and crew safety also can reduce the deformation and the damage of automotive equipment such as engine simultaneously. The energy absorption effect is enhanced through the full action of the energy absorption material in the honeycomb cavity. The energy-absorbing automobile bumper made of the honeycomb material has the advantages of high strength and light weight.

Description

Energy-absorbing automobile bumper

Technical Field

The utility model relates to the technical field of auto-parts, in particular to energy-absorbing car bumper.

Background

In the prior art, bumpers (bumpers) are arranged at the front end and the rear end of an automobile, so that the automobile bumper has a decoration function, more importantly, a safety device which has the functions of absorbing and buffering external impact force, protecting an automobile body and protecting the automobile body and passengers, and has the functions of safety protection, vehicle decoration, improvement on aerodynamic characteristics of the automobile and the like. From the aspect of safety, the automobile can play a role in buffering when a low-speed collision accident occurs, and front and rear automobile bodies are protected; the pedestrian protection device can play a certain role in protecting pedestrians in case of accidents with the pedestrians. From the appearance, the decorative material has the decorative effect and becomes an important part for decorating the appearance of the car; meanwhile, the automobile bumper has a certain aerodynamic effect, and meanwhile, in order to reduce the damage to passengers when a side collision accident happens to the car, the car door bumper is usually installed on the car so as to enhance the anti-collision impact force of the car door. The method is practical and simple, changes of the vehicle body structure are not large, and the method is widely popularized and used.

Traditional car bumper structure is comparatively simple, and the buffering effect is relatively poor when bumping into, and is comprehensive inadequately to the automobile body protection, and the security is lower when leading to traditional car bumper to use.

With the development of the automobile industry, automobile bumpers have also been moving to the way of innovation as an important safety device. Today's automobile front and rear bumpers not only keep original protection function, but also pursue harmony and unity with the automobile body modeling, pursue the lightweight of itself. At present, the bumper of the automobile is made of plastic, and the plastic bumper has strength, rigidity and decoration, so that the bumper can play a role in buffering when the automobile is in collision accidents from the aspect of safety, and front and rear automobile bodies are protected; from the appearance, the decorative automobile can be naturally combined with the automobile body to form a whole, has good decoration, and becomes an important part of the appearance of the automobile.

The bumper is used as a safety device for absorbing and relieving external impact force, and plays an extremely important role in protecting the front and rear parts of a vehicle body and protecting drivers and passengers. The strength of the bumper body plays a decisive role in the whole bumper, the high-strength bumper body is more favorable for the uniform distribution of collision energy, but in the design, the purpose of increasing the strength cannot be achieved by increasing the thickness of steel without limitation. The front and rear bumpers of the vehicle are required to be harmonious and uniform with the shape of the vehicle body and to be light in weight in addition to the original protection function. At present, the front and rear bumpers of the car are made of plastics, and the front and rear bumpers are called plastic bumpers. The plastic bumper consists of three parts, namely an outer plate, a buffer material, a cross beam and the like. Wherein the outer plate and the buffer material are made of plastics, and the cross beam is punched into a U-shaped groove by a cold-rolled sheet; the outer plate and the buffer material are attached to the cross beam, and the cross beam is connected with the frame longitudinal beam through screws and can be detached at any time. The plastic used for the plastic bumper is mainly made of two materials of polyester series and polypropylene series by adopting an injection molding method, the plastic bumper has the advantages of strength, rigidity and decoration, can play a role of buffering when a vehicle is in a collision accident from the safety aspect, protects the front and rear vehicle bodies, can be naturally combined with the vehicle bodies into a whole from the appearance aspect, has good decoration, and becomes an important part for decorating the appearance of the vehicle.

The existing bumper shell is difficult to increase the buffering capacity and resist impact stress, and the buffering effect is realized only by the buffering material attached to the cross beam.

The existing automobile bumper is generally of an arc-shaped shell structure which is formed by stamping a steel plate, and the bumper absorbs collision energy by deformation in a collision process, so that the bumper has a buffering and damping effect to protect the life safety of people in the automobile. However, since the conventional bumper is designed to absorb the energy of collision by the deformation of the housing, the bumper has a poor energy absorption and buffering effect, and the protection capability of the bumper to the vehicle occupant and the vehicle itself needs to be improved. And current car bumper is monolithic structure, when the bumper appears local collision and warp, needs whole change, and cost of maintenance is higher. Meanwhile, some existing automobile bumpers protrude out of the automobile body after being installed, and under the condition of poor light at night, the bumpers are easy to scratch with other vehicles.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect and the improvement technology among the prior art, the utility model provides an energy-absorbing car bumper design scheme overcomes the limitation in the car bumper design among the prior art, improves the energy-absorbing effect of target product.

The purpose of the utility model is realized through the following technical scheme.

The utility model relates to an energy-absorbing automobile bumper, which comprises a bumper shell, a honeycomb layer, a bottom plate layer and a barrier; the honeycomb layer is arranged between the bumper shell and the bottom plate layer, and the upper surface and the lower surface of the honeycomb layer are respectively connected with the bumper shell and the bottom plate layer; the bottom plate layer is used for connecting the energy-absorbing automobile bumper with an automobile frame.

The design principle of the utility model is that after the automobile is collided, the designed bumper shell is deformed, and the barrier behind the shell is deformed and displaced to absorb the collision energy; meanwhile, the honeycomb layer and the energy-absorbing buffer material filled in the honeycomb layer also deform and laterally displace to absorb collision energy; due to the deformation and the transverse displacement of the bumper shell, the barrier, the honeycomb material and the filler in the bumper shell, the collision energy is absorbed, the safety of drivers and passengers is guaranteed, and meanwhile, the deformation and the damage of automobile equipment such as an engine and the like can be reduced.

Wherein the honeycomb layer comprises a plurality of closely arranged honeycomb chambers. Optionally, the honeycomb chamber is filled with an energy absorbing and buffering material.

The honeycomb layer can be made of any honeycomb material in the prior art, preferably a PP honeycomb material, a paper honeycomb material, an aluminum honeycomb material, a PVC honeycomb material or other metal honeycomb materials; more preferably an aluminum honeycomb material or a steel honeycomb material.

The barrier is a cylinder with a triangular or trapezoidal cross section. The barrier can be a solid structure or a hollow structure. The barrier may be formed from steel, aluminum alloy, synthetic rubber or other resilient material.

The honeycomb layer is obliquely arranged between the bumper shell and the bottom plate layer, wherein the oblique arrangement means that the central line of each honeycomb chamber of the honeycomb layer is not perpendicular to the bumper shell or the bottom plate layer, or the included angle formed by the central line of each honeycomb chamber and the bumper shell or the bottom plate layer is less than 90 degrees. Preferably, the center line of the honeycomb chamber forms an angle with the bumper skin or floor layer of greater than 18 degrees and less than 85 degrees. More preferably, the centerline of the honeycomb chamber forms an angle with the bumper skin or floor layer of greater than 30 degrees and less than 75 degrees. Most preferably, the centerline of the honeycomb chamber forms an angle with the bumper skin or floor layer of greater than 45 degrees and less than 60 degrees.

Optionally, the bumper skin, honeycomb layer, floor layer and barrier are bonded together by an adhesive, preferably a hot melt adhesive.

Optionally, an energy-absorbing buffer material is filled in the honeycomb cavity, and the energy-absorbing buffer material can be any energy-absorbing buffer material with a buffer and shock absorption function, such as foamed metal, foamed aluminum, natural rubber, synthetic rubber, nano energy-absorbing material or other high polymer materials with an energy-absorbing and shock-absorbing function.

Compared with the prior art, the utility model have following advantage:

1. the utility model discloses an in the product, the honeycomb layer that the slope set up or the honeycomb cavity of slope when bumping, the deformation and the lateral displacement of bumper shell, separation thing, honeycomb material and wherein filler absorb the collision energy, guarantee driver and crew's safety, also can reduce the deformation and the damage of automobile equipment such as engine simultaneously.

2. The energy absorption effect is enhanced through the full action of the energy absorption material in the honeycomb cavity. The energy-absorbing automobile bumper made of the honeycomb material has the advantages of high strength and light weight.

Drawings

Fig. 1 is a schematic structural view of the energy-absorbing bumper of the present invention.

Reference numerals in the above figures:

1 a bumper housing; 2 a honeycomb layer; 21 a honeycomb chamber;

3, a bottom plate layer; 4 a barrier.

In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings and the implementation examples of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Detailed Description

A detailed description of an embodiment of the present invention is provided below with reference to the accompanying drawings, and the detailed description is not intended to limit the present invention.

As shown in fig. 1, the energy-absorbing automobile bumper of the present disclosure includes a bumper skin 1, a honeycomb layer 2, a floor layer 3, and a barrier 4; honeycomb layer 2 sets up between bumper shell 1 and bottom plate layer 3, and honeycomb layer 2 upper and lower surface links to each other with bumper shell 1 and bottom plate layer 3 respectively, and honeycomb layer 2 contains a plurality of closely arranged's honeycomb cavity 21, and the cross section of separation thing 4 is trapezoidal.

In this particular embodiment, the bumper skin 1, the honeycomb layer 2, the floor layer 3 and the barrier 4 are bonded by means of a hot melt adhesive, which is polyethylene n-butyl acrylate. And energy-absorbing materials are filled in the honeycomb cavities 5, and the energy-absorbing materials are mixed materials of modified sponge and aluminum foil composite materials.

The above-mentioned specific embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the technical concept and the protection scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical scheme should fall into the protection scope of the present invention without departing from the design concept of the present invention.

Claims

1. An energy-absorbing automobile bumper is characterized by comprising a bumper shell (1), a honeycomb layer (2), a bottom plate layer (3) and a barrier (4); the honeycomb layer (2) is arranged between the bumper shell (1) and the bottom plate layer (3), and the upper surface and the lower surface of the honeycomb layer (2) are respectively connected with the bumper shell (1) and the bottom plate layer (3); the honeycomb layer (2) comprises a plurality of closely arranged honeycomb chambers (21); the honeycomb layer (2) is obliquely arranged between the bumper shell (1) and the bottom plate layer (3), namely, the included angle formed by the center line of the honeycomb chamber (21) and the bumper shell (1) or the bottom plate layer (3) is less than 90 degrees; the bottom plate layer (3) is used for connecting the energy-absorbing automobile bumper with an automobile frame.

2. Energy-absorbing vehicle bumper according to claim 1, characterized in that the center line of the honeycomb chamber (21) forms an angle with the bumper skin (1) or floor layer (3) of more than 18 degrees and less than 85 degrees.

3. Energy-absorbing vehicle bumper according to claim 2, characterized in that the centre line of the honeycomb chamber (21) forms an angle with the bumper skin (1) or the floor layer (3) of more than 30 degrees and less than 75 degrees.

4. Energy-absorbing vehicle bumper according to claim 3, characterized in that the centre line of the honeycomb chamber (21) forms an angle with the bumper skin (1) or the floor layer (3) of more than 45 degrees and less than 60 degrees.

5. Energy-absorbing vehicle bumper according to any one of claims 1 to 4, characterized in that the barrier (4) is a cylinder with a triangular or trapezoidal cross-section, which is of solid or hollow construction.

6. Energy-absorbing automobile bumper according to any one of claims 1-4, characterized in that the honeycomb chamber (21) is filled with energy-absorbing buffer material, wherein the energy-absorbing buffer material can be one or more of foamed metal, foamed aluminum, natural rubber, synthetic rubber or nano energy-absorbing material.