CN215793578U

CN215793578U - Directional foaming structure of foaming material for automobile and automobile

Info

Publication number: CN215793578U
Application number: CN202121345795.1U
Authority: CN
Inventors: 焦哲; 周卜军; 吴春广
Original assignee: Beijing Changan Automobile Engineering Technology Research Co Ltd
Current assignee: Beijing Changan Automobile Engineering Technology Research Co Ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-02-11
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a directional foaming structure of a foaming material for an automobile and the automobile, which comprises a framework arranged in an inner cavity of an automobile body, wherein an installation part fixedly connected with the inner cavity of the automobile body is arranged on the framework, the framework comprises two oppositely arranged plate bodies and a plurality of connecting columns for connecting the two plate bodies, a cavity for containing the foaming material is arranged between the two plate bodies, and the opening direction of the cavity and the axis of the inner cavity of the automobile body form a preset angle. The material can meet the application requirement of a narrow cavity, the using amount of foaming materials is saved, and the cost of parts is reduced.

Description

Directional foaming structure of foaming material for automobile and automobile

Technical Field

The utility model relates to automobile body parts, in particular to a directional foaming structure of a foaming material for an automobile and the automobile.

Background

The expansion glue for partitioning the cavity of the car body is mainly applied to cavities at positions of a column A, a column B, a column C, a column D, a side wall upper edge beam, a doorsill and the like of the car body, and the foamed cavities are filled to play roles in sealing, sound insulation and noise reduction.

The foaming material EVA is a main functional component of the expansion glue, the EVA is an ethylene-vinyl acetate copolymer for short, the foaming material EVA is a high-molecular composite material, can be fully expanded and deformed in 15 minutes under the action of a high-temperature environment of 120-180 ℃, the volume of the foaming material EVA is increased to 10-20 times of the original volume, and the foaming material EVA fills the cavity. The foamed material can be installed and positioned on the vehicle body through an auxiliary plastic framework, a buckle, butyl rubber and the like.

As the section of the narrow cavity of the vehicle body, such as a side wall inner cavity, an A column inner cavity and a B column inner cavity, is narrow and irregular, a scheme that a sheet-shaped foaming material 11 is adopted and a connecting piece 12 and butyl rubber 13 are used for assisting installation and positioning is used in the design of expansion rubber in the reference of figure 1. Firstly, because the foaming process is natural expansion, in order to prevent the foaming material EVA from sagging and ensure the sealing effect of the cavity section, the width and the thickness of the foaming material are not less than 20mm and not less than 3mm, which causes excessive use of the foaming material EVA and increases the cost. In addition, as the EVA of the foam material is soft in texture, butyl rubber is needed to assist in bonding and positioning in the scheme, so that bonding failure is easy to occur, parts are unstably positioned and are separated from a metal plate mounting surface.

Disclosure of Invention

The utility model aims to provide a directional foaming structure of a foaming material for an automobile and the automobile, which can meet the application requirement of a narrow cavity, save the consumption of the foaming material and reduce the cost of parts.

The directional foaming structure of the foaming material for the automobile comprises a framework arranged in an inner cavity of an automobile body, wherein an installation part fixedly connected with the inner cavity of the automobile body is arranged on the framework, the framework comprises two oppositely arranged plate bodies and a plurality of connecting columns for connecting the two plate bodies, a cavity for containing the foaming material is arranged between the two plate bodies, and the opening direction of the cavity forms a preset angle with the axis of the inner cavity of the automobile body.

Further, the middle parts of the two plate bodies are provided with bosses extending towards the direction away from the cavity, and buckles connected with the inner cavity of the vehicle body are integrally formed on the bosses to serve as installation parts.

Furthermore, the peripheries of the two plate bodies and the inner cavity of the vehicle body are designed according to the shape.

Furthermore, positioning columns are arranged on the side faces, far away from the cavity, of the two plate bodies.

Furthermore, at least one plate body is provided with an electrophoresis through hole.

A vehicle comprises a vehicle body, wherein the vehicle body is provided with the directional foaming structure of the foaming material for the vehicle.

According to the utility model, the two plate bodies of the framework form a cavity for containing the foaming material, and the foaming material is blocked by the plate bodies and expands outwards along the direction of the inner side wall of the plate bodies in the foaming process, so that the cavity of the vehicle body is filled to play a role in partition and sealing, and the effective filling utilization rate of the foaming material is improved. Simultaneously because the week of two plate bodys is along the side with the automobile body inner chamber design along with the type, and cavity opening direction is preset the angle with automobile body inner chamber axis, in the expanded process of expanded material, can be even expand along automobile body inner chamber section direction, avoid invalid and pile up, and then saved expanded material's quantity, reduced part cost.

Drawings

FIG. 1 is a schematic view of a foaming structure of a prior art foaming material;

FIG. 2 is a top view of the armature of the present invention;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic cross-sectional view of the inventive skeleton assembled within a vehicle body cavity;

FIG. 5 is a schematic view showing the state of foaming of the foam of the present invention.

In the figure, 1-plate body, 2-foaming material, 3-connecting column, 4-mounting part, 5-boss, 6-positioning column, 7-electrophoresis through hole, 8-inner plate, 9-outer plate, 10-vehicle body inner cavity, 11-sheet foaming material, 12-connecting piece and 13-butyl rubber.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 2 to 4, the directional foaming structure of the automotive foaming material comprises a framework arranged in an inner cavity 10 of an automotive body, wherein the inner cavity 10 of the automotive body is formed by enclosing a welded inner plate 8 and an outer plate 9, an installation part 4 fixedly connected with the inner cavity 10 of the automotive body is arranged on the framework, the framework comprises two oppositely arranged panels 1 and seven connecting columns 3 connected with the two panels 1, and the seven connecting columns 3 are distributed along the side surfaces of the panels. A cavity for containing the foaming material 2 is arranged between the two plate bodies 1, and the opening direction of the cavity and the axis of the inner cavity 10 of the vehicle body form a preset angle. The middle parts of the two plate bodies 1 are provided with bosses 5 extending towards the direction away from the cavity, and buckles connected with the inner cavity 10 of the vehicle body are integrally formed on the bosses 5 and serve as installation parts 4.

In order to ensure that the foaming material 2 expands uniformly along the section direction of the inner cavity 10 of the vehicle body and avoid invalid accumulation, the peripheries of the two plate bodies 1 are designed to follow the shape of the inner cavity 10 of the vehicle body.

One of the two plate bodies 1 is provided with an electrophoresis through hole 7, so that the electrophoresis process of the vehicle body is ensured to be smooth.

Two plate bodies 1, spliced pole 3 and installation department 4 are through integrative injection moulding, and the structural strength of whole skeleton has been increased in setting up of spliced pole 3 and boss 5, has promoted job stabilization nature. Foaming material 2 makes up integratively with the skeleton through the secondary moulds plastics, two plate body 1 are equipped with two reference columns 6 on keeping away from the side of cavity respectively, play the positioning action at the secondary in-process of moulding plastics. After the secondary injection molding, the foamed material 2 is prevented from falling off from the framework due to the clamping of the two plate bodies 1 and the support of the connecting column 3 between the two plate bodies 1. Meanwhile, in the foaming process, the foaming material 2 is ensured not to flow and hang in the molten state.

During the specific assembly, set up 10 x 5 mm's mounting hole on inner panel 8, match with the buckle on the plate body 1, during the buckle chucking, the panel beating laminating around the mounting hole on boss 5 and the inner panel 8 avoids the part slope as the assembly holding surface, guarantees that the part is perpendicular with automobile body inner chamber 10 at the assembled state. The buckle and the plate body 1 are integrally formed by injection molding, so that the positioning precision is high, and the installation is firm and reliable. The foaming material 2 at the boss 5 is increased along with the widening of the framework, and the sealing effect around the mounting hole of the Youban 8 is ensured. When matching the inner cavities 10 of the car body with different shapes, the optimal amount of the foaming material 2 is found by finely adjusting the gap between the two plate bodies 1 and the gap between the plate bodies 1 and the outer plate 9. In the foaming process, the foaming material 2 is blocked by the plate body 1 and can expand outwards along the direction of the inner side wall of the plate body 1, so that the inner cavity 10 of the vehicle body is filled to play a role in separating and sealing, the effective filling utilization rate of the foaming material 2 is improved, the ineffective waste of the foaming material 2 is avoided, the using amount of the foaming material is saved by 30%, and the overall cost of the part is reduced by about 15%.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A directional foaming structure of foaming material for automobiles is characterized in that: including locating the skeleton in automobile body inner chamber (10), be equipped with on the skeleton with automobile body inner chamber (10) fixed connection's installation department (4), this skeleton includes plate body (1) of two relative settings and a plurality of spliced poles (3) of connecting two plate bodies (1), is equipped with the cavity of holding expanded material (2) between two plate bodies (1), and this cavity opening direction is with automobile body inner chamber (10) axis and predetermines the angle.

2. The directional foaming structure of the foamed material for automobiles according to claim 1, wherein: the middle parts of the two plate bodies (1) are provided with bosses (5) extending towards the direction away from the cavity, and buckles connected with an inner cavity (10) of the vehicle body are integrally formed on the bosses (5) and serve as installation parts (4).

3. The directional foaming structure of the foamed material for automobiles according to claim 1 or 2, characterized in that: the peripheries of the two plate bodies (1) are designed along with the inner cavity (10) of the vehicle body.

4. The directional foaming structure of the foamed material for automobiles according to claim 1 or 2, characterized in that: and positioning columns (6) are arranged on the side surfaces, far away from the cavity, of the two plate bodies (1).

5. The directional foaming structure of the foamed material for automobiles according to claim 1 or 2, characterized in that: at least one plate body (1) is provided with an electrophoresis through hole (7).

6. A vehicle, comprising a vehicle body, characterized in that: the automobile foam material directional foaming structure is arranged on the automobile body and comprises the foam material as claimed in any one of claims 1 to 5.