CN210258315U

CN210258315U - Combined front and rear bumper

Info

Publication number: CN210258315U
Application number: CN201921136108.8U
Authority: CN
Inventors: 王育博; 雷新春; 王雪萌
Original assignee: Beijing Beiqi Mould and Plastic Technology Co Ltd
Current assignee: Beijing Beiqi Mould and Plastic Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-07
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a modular preceding, rear bumper, including plastic casing and backup pad body, plastic casing locates the outside of backup pad body, the backup pad body is metal material, the backup pad body includes that a plurality of chunks interconnect and form its characterized in that: the protective block is made of metal materials, and the material potential of the protective block is negative to the material of the support plate body. Through set up the protection piece between two connecting portions of interconnect, the material electric potential of protection piece is born in the material of backup pad body, can make the protection piece preferentially corroded to make the backup pad body obtain the protection, prolong the life of bumper, simple structure, facilitate promotion and application simultaneously.

Description

Combined front and rear bumper

Technical Field

The invention relates to the technical field of automobile accessories, in particular to a combined front bumper and a combined rear bumper.

Background

The automobile bumper is a safety device for absorbing and relieving external impact force and protecting the front part and the rear part of an automobile body. The front and rear bumpers of the automobile are stamped into channel steel by steel plates and riveted or welded with the frame longitudinal beam for many years, and a large gap is reserved between the channel steel and the automobile body, so that the front and rear bumpers of the automobile are quite unattractive. With the development of the automobile industry and the extensive use of engineering plastics in the automobile industry, automobile bumpers have also been revolutionized 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. The bumper of a common automobile is formed by punching a cold-rolled sheet and then is fixed on the automobile. However, the bumper has the disadvantages of large size, difficulty in carrying, difficulty in post processing and total replacement when damaged in one part in the prior art, so that a combined bumper capable of overcoming the disadvantages is manufactured, the bumper is divided into a plurality of detachable parts, and all the parts of the bumper are combined and installed on the automobile in the assembly of the automobile, so that the combined bumper has the functions of the traditional bumper and overcomes the disadvantages.

However, the modular bumper has the disadvantages that when a certain part is damaged, the modular bumper needs to be detached and replaced, and the joints between the parts are easily worn, so that the joints of the parts are easily corroded, especially in rainy and humid days, and the application and popularization of the modular bumper are limited.

Disclosure of Invention

The invention aims to overcome the defects of the traditional technology and provides the combined front and rear bumpers which have simple structures and can effectively prevent the joints of all parts from being corroded.

The aim of the invention is achieved by the following technical measures: the utility model provides a modular preceding, rear bumper, includes plastic casing and backup pad body, plastic casing locates the outside of backup pad body, the backup pad body is metal material, the backup pad body includes that a plurality of chunks interconnect and form its characterized in that: the protective block is made of metal materials, and the material potential of the protective block is negative to the material of the support plate body.

The supporting plate body comprises a plurality of blocks which are connected with each other, the supporting plate body mainly has two functions in the bumper, one is used for supporting the plastic shell, and the other is used for providing protection when being impacted. Mutual dismouting or vibrations between the chunk all can lead to the wearing and tearing of junction, cause the metal of backup pad body to expose outside, can be corroded in humid overcast and rainy weather, and through set up the protection piece between two connecting portions of interconnect, the material electric potential of protection piece is born in the material of backup pad body, can make the protection piece preferentially corroded to make the backup pad body obtain the protection, the life of extension bumper, facilitate promotion and application.

Preferably, the protective block is zinc or aluminum alloy.

Through the arrangement, other active metal elements are removed, so that the protective effect of the protective block is achieved, and the protective block is more economical and practical and convenient to replace.

As a preferred scheme, the connecting parts are arranged on one side of the supporting plate body, which is far away from the plastic shell.

Through the arrangement, the plastic shell is connected to the outer side of the supporting plate body, the connecting portion is arranged on the inner side of the supporting plate body, and the connecting portion can be conveniently disassembled and assembled.

Preferably, the connecting portion is provided with a groove.

Through the arrangement, the protection block is arranged in the groove, so that the position of the protection block is limited, the protection block is directly connected with the support plate body, and part of materials of the support plate body are saved.

Preferably, the grooves of the connecting parts connected with each other are arranged corresponding to each other.

Through the arrangement, the two grooves of the two connecting parts are correspondingly arranged, so that the two connecting parts can share one protecting block, and the number of the protecting blocks is saved.

As a preferable scheme, the protection block is arranged corresponding to the groove.

Through the arrangement, the protection blocks are arranged in the grooves of the two connecting parts which are connected with each other, so that the integral structure is simplified.

As a preferable scheme, the connecting portions connected with each other are provided with corresponding first connecting holes at the grooves, the protective block is provided with second connecting holes, and the first connecting holes are connected with the second connecting holes through bolts.

Through the arrangement, the connecting part and the protection block are connected together by the bolt, so that the connection is stable and the disassembly and assembly are convenient.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the invention provides a combined front bumper and a combined rear bumper, wherein a protective block is arranged between two connecting parts which are connected with each other, the material potential of the protective block is negative to the material of a supporting plate body, so that the protective block can be corroded preferentially, the supporting plate body is protected, the service life of the bumper is prolonged, the structure is simple, and the combined front bumper and the combined rear bumper are convenient to popularize and apply.

The invention is further described with reference to the following figures and detailed description.

Drawings

FIG. 1 is a schematic front bumper structure of a combined front and rear bumper according to the present invention.

Fig. 2 is a schematic view of a rear bumper structure of a combined front and rear bumper according to the present invention.

Fig. 3 is a schematic structural view of two connecting portions of a combined front and rear bumper according to the present invention, which are connected to each other.

FIG. 4 is a schematic view of a groove structure of a combined front and rear bumper according to the present invention.

FIG. 5 is a schematic view of a combined front and rear bumper guard block corresponding to the groove.

Detailed Description

Example (b): as shown in fig. 1-5, a combined front bumper and rear bumper comprises a plastic shell 1 and a supporting plate body 2, wherein the plastic shell is arranged on the outer side of the supporting plate body, the supporting plate body is made of metal material, and the supporting plate body comprises a plurality of blocks 3 which are connected with each other to form the combined front bumper and rear bumper, and is characterized in that: the protective block is characterized in that the blocks 3 are provided with connecting parts 4, the blocks 3 are connected with each other through the connecting parts 4, two of the connecting parts 4 are connected with each other, protective blocks 6 are arranged between the connecting parts 4, the protective blocks are respectively in contact with the connecting parts, the protective blocks are made of metal materials, and the material potential of the protective blocks is negative to the material of the support plate body.

The supporting plate body comprises a plurality of blocks which are connected with each other, as shown in fig. 1, the supporting plate body is a schematic diagram of a front bumper, in the embodiment, three blocks of the supporting plate body of the front bumper are arranged, and can be set to be two, four or five according to actual conditions, and the like, and fig. 2 is a schematic diagram of a rear bumper 8.

The function of backup pad body in the bumper mainly has two, and first supports the plastic casing, and second provides the protection when receiving the impact. Therefore, the supporting plate body is required to have high strength, and the supporting plate body in the existing bumper is made of metal materials, and precisely, is made of steel. In the invention, the support plate body is divided into single blocks which are connected through the connecting parts, each connecting part can damage the coating at the connecting part after being disassembled, so that the steel material of the support plate body is directly exposed, a thin water film is adsorbed on the surface of the steel in a humid environment, water is a weak electrolyte and can ionize a small amount of hydrogen ions and hydroxyl ions, and simultaneously, the hydrogen ions in the water are increased due to the dissolution of carbon dioxide in the air, so that an electrolyte film can be formed on the surface of the steel, and the electrolyte film, the iron of the steel and a small amount of carbon (or other impurities) form the original battery. Therefore, innumerable tiny galvanic cells are formed on the surface of the steel. In these galvanic cells, the iron is oxidized losing atoms. This is the principle of erosion of the support plate body at the wear point. And choose for use all to contact between protection piece and two interconnect's connecting portion, when the backup pad body received wearing and tearing, the protection piece was made because of selecting for use the material that the electric potential is born in the backup pad body, because the material more lively can be preferred to lose electron oxidation corrosion than the backup pad body, and as for inactive backup pad body, thereby can not lose the electron and be corroded and obtain the protection.

The protective block is zinc or aluminum alloy. In principle, the protection of the supporting plate body can be completed as long as the material potential adopted by the protection block is negative to the material of the supporting plate body, but the microcosmic corrosion battery on the surface has large driving force and the protection film is easy to dissolve and has strong self-corrosion because potassium, calcium, sodium and magnesium have high chemical activity. Therefore, the current efficiency is not high whether it is pure metal or their alloy. However, zinc has a small effective potential difference with iron in a corrosive medium, has high current efficiency, and can be made into a protection block to protect the support plate body. Theoretically, aluminum is a good protective block material, but pure aluminum is extremely easy to passivate and forms an oxide film with good protective property on the surface, so that the pure aluminum cannot be used as the protective block material and must be alloyed. Generally, alloy elements such as zinc, indium, mercury, cadmium, tin, silicon, magnesium and the like are added into aluminum, and atoms of the elements partially replace aluminum atoms on aluminum crystal lattices, so that the atoms become defect parts of an aluminum oxide film, and normal dissolution of an aluminum alloy matrix is promoted.

As shown in fig. 1-2, the connecting portions 4 are all disposed on a side of the supporting plate body 2 away from the plastic casing 1. One side of the supporting plate body is used for connecting the plastic shell, and the other side of the supporting plate body is used for connecting the blocks, so that the blocks are more convenient to disassemble.

As shown in fig. 3, the connecting portion 4 is provided with a groove 5. The grooves of the connecting parts connected with each other are arranged corresponding to each other. The two grooves are oppositely arranged to form a protection groove for accommodating a protection block, and the protection block is arranged corresponding to the grooves. The protection block 6 is arranged in a protection groove formed by two corresponding grooves. The protection groove formed by the two corresponding grooves enables the protection block to be positioned in the protection groove, so that space is provided for installation of the protection block, and movement of the protection block is limited. In this embodiment, the specific shape of the groove is shown in fig. 4, and the shape of the protection block corresponding to the groove in fig. 4 is shown in fig. 5, and the size of the protection block is not larger than the size of the groove.

The connecting portions 4 connected with each other are provided with corresponding first connecting holes 51 at the grooves 5, the protective block 6 is provided with second connecting holes 61, and the first connecting holes 51 are connected with the second connecting holes 61 through bolts. The protection piece is arranged in the protection groove, and is connected with the connecting part and the protection piece together through the bolt, so that the connection is stable, and the disassembly and the assembly are convenient.

Claims

1. The utility model provides a modular preceding, rear bumper, includes plastic casing and backup pad body, plastic casing locates the outside of backup pad body, the backup pad body is metal material, the backup pad body includes that a plurality of chunks interconnect and form its characterized in that: the protective block is made of metal materials, and the material potential of the protective block is negative to the material of the support plate body.

2. A combined front and rear bumper according to claim 1, wherein: the protective block is zinc or aluminum alloy.

3. A combined front and rear bumper according to claim 1, wherein: the connecting parts are arranged on one side of the supporting plate body deviating from the plastic shell.

4. A combined front and rear bumper according to claim 3, in which: the connecting part is provided with a groove.

5. A combined front and rear bumper according to claim 4, characterised in that: the grooves of the connecting parts connected with each other are arranged corresponding to each other.

6. A combined front and rear bumper according to claim 5, characterised in that: the protection block is arranged corresponding to the groove.

7. A combined front and rear bumper according to claim 6, wherein: the connecting parts which are connected with each other are provided with corresponding first connecting holes at the grooves, the protection block is provided with second connecting holes, and the first connecting holes are connected with the second connecting holes through bolts.