Novel full-sound-insulation expansion rubber block structure

Abstract

The utility model discloses a novel full sound insulation expansion rubber block structure which comprises a sound insulation board and an installation buckle arranged on the sound insulation board and used for being installed on a car body metal plate, the sound insulation board comprises a sound insulation board body and two foaming EVA layers, and the sound insulation board body is arranged between the two foaming EVA layers to form a composite sound insulation board structure. The sound insulation board body is made of foamed aluminum. The novel full-sound-insulation expansion rubber block is reasonable in structural design, a middle supporting framework of the whole expansion rubber block is made of a foaming aluminum material, the framework has the sound insulation function and the sound absorption function, and the sound absorption performance of the whole expansion rubber block is improved; and compared with an existing structure, the weight is lighter, and lightweight design is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation structures, in particular to a novel full sound insulation expansion rubber block structure. Background Art

[0002] With the development of automobile technology, people have higher and higher requirements on the NVH performance of automobiles, and sound insulation materials are widely used on the car body to reduce noise; the existing sound insulation expansion rubber block skeletons are mostly non-foaming materials, which have certain sound insulation effects, but their sound absorption effects are relatively poor. There is still room for improvement in the sound insulation and sound absorption performance of related structures.

[0003] For example, Chinese patent CN206394565U discloses a sound-insulating and noise-reducing aluminum trim for automobiles, which includes an interior trim panel body, wherein the interior trim panel body includes an aluminum plate, a plastic part and a polyurethane foam, wherein a plastic part and a clip fixedly connected to one side of the plastic part are fixedly connected to one side of the aluminum plate, and both end edges of the plastic part are provided with glue pouring grooves and polyurethane foam arranged in the glue pouring grooves; its frame adopts a traditional aluminum plate, and the sound absorption performance of the formed aluminum trim panel is relatively poor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a novel fully sound-insulating expansion rubber block structure, which can effectively improve the sound absorption performance of the entire expansion rubber block.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The novel fully sound-insulating expansion rubber block structure comprises a sound insulation board and a mounting clip arranged on the sound insulation board for mounting on a vehicle body sheet metal. The sound insulation board comprises a sound insulation board body and two layers of foamed EVA layers. The sound insulation board body is arranged between the two layers of foamed EVA layers to form a composite sound insulation board structure. The sound insulation board body is made of foamed aluminum.

[0007] Further:

[0008] The thickness of the foamed aluminum material is 0.5-10 mm.

[0009] The thickness of the foamed EVA layer on one side of the sound insulation board body is 1-5 mm.

[0010] A group of weight-reducing holes are arranged on the composite sound insulation board structure.

[0011] The installation clip comprises a connected sound insulation board connection clip and an installation clip, and a clip positioning hole cooperating with the sound insulation board connection clip is provided on the composite sound insulation board structure.

[0012] The sound insulation board connecting clip and the mounting clip are an integral structure of injection molding.

[0013] The clamping direction of the sound insulation board connecting clip is perpendicular to the clamping direction of the installation clip.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The new fully soundproof expansion rubber block has a reasonable structural design. The middle supporting frame of the entire expansion rubber block is made of foamed aluminum material. The frame has the function of sound insulation while also absorbing sound, which improves the sound absorption performance of the entire expansion rubber block. Compared with the existing structure, it is lighter in weight and is conducive to lightweight design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents and symbols in the drawings of this specification:

[0017] Figure 1 This is a schematic diagram of the structure of the expansion rubber block of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the sound insulation board of the utility model.

[0019] Figure 3 for Figure 1 Schematic side view.

[0020] Figure 4 for Figure 2 Schematic cross section.

[0021] In the figure:

[0022] 1. Sound insulation board, 101. Weight reduction hole, 102. Buckle positioning hole, 103. Foamed EVA layer I, 104. Foamed EVA layer II, 105. Foamed aluminum material, 2. Installation buckle, 201. Sound insulation board connecting clip, 202. Installation clip. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, the new type of fully sound-insulating expansion rubber block structure includes a sound insulation board 1 and a mounting clip 2 arranged on the sound insulation board for mounting on the vehicle body sheet metal. The sound insulation board includes a sound insulation board body and two layers of foamed EVA layers. The sound insulation board body is arranged between the two layers of foamed EVA layers to form a composite sound insulation board structure. The sound insulation board body is foamed aluminum material 105.

[0025] The middle supporting frame sound insulation board of the entire expansion rubber block is made of foamed aluminum material. The frame has the function of sound insulation and sound absorption at the same time, which improves the sound absorption performance of the entire expansion rubber block. Compared with the existing structure, it is lighter in weight and is conducive to lightweight design.

[0026] Preferably, the thickness of the foamed aluminum material is 0.5-10 mm; the two foamed EVA layers are foamed EVA layer I 103 and foamed EVA layer II 104, respectively, and the thickness of the foamed EVA layer on one side of the sound insulation board body is 1-5 mm. A new type of sound insulation expansion rubber block is designed, the middle frame of the new structure is foamed aluminum material and the two sides are attached with foamed EVA, and it is installed on the body sheet metal with buckles, which can improve the sound insulation efficiency of the body cavity.

[0027] The composite sound insulation board structure is provided with a group of weight-reducing holes 101. The mounting clip 2 includes a connected sound insulation board connection clip 201 and a mounting clip 202. The composite sound insulation board structure is provided with a clip positioning hole 102 that cooperates with the sound insulation board connection clip; the entire expansion rubber block structure is mounted on the body sheet metal through the mounting clip.

[0028] The sound insulation board connecting clip and the installation clip are an integral structure of injection molding; the clipping direction of the sound insulation board connecting clip is perpendicular to the clipping direction of the installation clip, and the thickness of the entire expansion rubber block structure can be controlled within a reasonable range, which is convenient for installation and fixation;

[0029] Furthermore, glue can be applied on the surface of the foamed EVA layer that is bonded to the body sheet metal, so that the bonding effect is better; this is beneficial to improving the sound absorption effect of the entire structure.

[0030] The above is only an explanation of the preferred embodiments of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0031] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A novel full sound insulation expansion rubber block structure, comprising a sound insulation board and a mounting buckle provided on the sound insulation board for mounting on a vehicle body sheet metal, characterized in that: The sound insulation board comprises a sound insulation board body and two foamed EVA layers. The sound insulation board body is arranged between the two foamed EVA layers to form a composite sound insulation board structure. The sound insulation board body is made of foamed aluminum material.

2. The novel full sound insulation expansion rubber block structure as claimed in claim 1 is characterized in that: The thickness of the foamed aluminum material is 0.5-10 mm.

3. The novel full sound insulation expansion rubber block structure as claimed in claim 1 is characterized by: The thickness of the foamed EVA layer on one side of the sound insulation board body is 1-5 mm.

4. The novel full sound insulation expansion rubber block structure as claimed in claim 1 is characterized in that: A group of weight-reducing holes are arranged on the composite sound insulation board structure.

5. The novel full sound insulation expansion rubber block structure as claimed in claim 1 is characterized by: The installation clip comprises a connected sound insulation board connection clip and an installation clip, and a clip positioning hole cooperating with the sound insulation board connection clip is provided on the composite sound insulation board structure.

6. The novel full sound insulation expansion rubber block structure as claimed in claim 5 is characterized by: The sound insulation board connecting clip and the mounting clip are an integral structure of injection molding.

7. The novel full sound insulation expansion rubber block structure as claimed in claim 5 is characterized by: The clamping direction of the sound insulation board connecting clip is perpendicular to the clamping direction of the installation clip.

Images