阅读说明：本技术 一种膨胀胶块eva棱形胶钉 (EVA prismatic rubber nail of expansion rubber block ) 是由 谢宇 李松 卞凯 于 2020-07-02 设计创作，主要内容包括：本发明涉及一种膨胀胶块EVA棱形胶钉,包括胶钉帽,所述胶钉帽上固定有胶钉骨架,所述胶钉骨架的上端呈圆锥形,所述胶钉骨架由上至下固定有多个棱形卡齿,每个棱形卡齿由两个相互对称的长齿与两个相互对称的短齿一体成型而成,胶钉骨架上位于最上端处的棱形卡齿与其相邻的两个棱形卡齿的短齿处呈板状,胶钉骨架上位于最下端处的棱形卡齿与其相邻的两个棱形卡齿的短齿处呈板状。(The invention relates to an EVA prismatic rubber nail of an expansion rubber block, which comprises a rubber nail cap, wherein a rubber nail framework is fixed on the rubber nail cap, the upper end of the rubber nail framework is conical, a plurality of prismatic latch teeth are fixed on the rubber nail framework from top to bottom, each prismatic latch tooth is formed by integrally forming two long teeth which are mutually symmetrical and two short teeth which are mutually symmetrical, the prismatic latch tooth positioned at the uppermost end of the rubber nail framework and the short teeth of two adjacent prismatic latch teeth are in a plate shape, and the prismatic latch tooth positioned at the lowermost end of the rubber nail framework and the short teeth of two adjacent prismatic latch teeth are in a plate shape.)

1. The utility model provides an inflation is glued piece EVA prism and is glued nail which characterized in that: including the adhesive nail cap, be fixed with the adhesive nail skeleton on the adhesive nail cap, the upper end of adhesive nail skeleton is conical, the adhesive nail skeleton is fixed with a plurality of prismatic latches from top to bottom, and every prismatic latch is formed by the short tooth integrated into one piece of the long tooth of two mutual symmetries and two mutual symmetries, and the prismatic latch that lies in the top end department on the adhesive nail skeleton is platelike rather than the short tooth department of two adjacent prismatic latches, and the prismatic latch that lies in the bottom end department on the adhesive nail skeleton is platelike rather than the short tooth department of two adjacent prismatic latches.

Technical Field

The invention relates to the technical field of automobile NVH, in particular to an EVA prismatic rubber nail of an expansion rubber block.

Background

In order to solve the technical problem of systematic NVH of an automobile body, a partition sealing solution of an expansion rubber block EVA is adopted on a sound energy reverberation transmission path. Through hierarchical wall, inhale the sound, fall and make an uproar and sealed mode, with the separation of noise outside the automobile body, finally realize promoting by a wide margin of whole car NVH performance. The expansion rubber block EVA partition product is composed of EVA and rubber nails, the expansion rubber block EVA and the rubber nails are generally realized by adopting an injection molding process, and then the combination of the EVA and the rubber nails is realized by an assembly mode. Because the inflation is glued the piece EVA product and need be fixed in car body in white subassembly system through gluing the nail, moreover when the installation inflation is glued the piece EVA product, the operator need with the hand will glue the nail joint in the automobile body fixed orifices, need accomplish the joint of gluing the nail in several seconds, need accomplish the fixed of thousands of glue nails a day, seriously influence operator's finger intensity and physical and mental health, so, need a neotype, go into easily, hardly extract the novel glue nail product of going into urgently.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provides an EVA prismatic rubber nail with an expansion rubber block.

The invention is realized by the following technical scheme:

the utility model provides an inflation is glued piece EVA prism and is glued nail, is including gluing the nail cap, be fixed with the gluey nail skeleton on gluing the nail cap, the upper end of gluing the nail skeleton is conical, it is fixed with a plurality of prism latches from top to bottom to glue the nail skeleton, and every prism latch is formed by the long tooth of two mutual symmetries and the short tooth integrated into one piece of two mutual symmetries, and the prism latch that lies in the top end department on gluing the nail skeleton is platelike rather than the short tooth department of two adjacent prism latches, and the prism latch that lies in the bottom end department on gluing the nail skeleton is platelike rather than the short tooth department of two adjacent prism latches.

The invention has the beneficial effects that:

1. the technical problem that the EVA rubber nails of the expansion rubber blocks are difficult to clamp is effectively solved;

2. the self weight of the elastic rubber nail is 10-15% lighter than that of the traditional rubber nail. (ii) a

3. The cost of the elastic rubber nail has obvious advantages compared with the traditional rubber nail;

4. the assembly efficiency of the staff is improved by more than 20%;

5. effectively improving the labor intensity of the staff.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the present invention;

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

in the figure: 1. a long tooth; 2. short teeth; 3. a rubber nail framework; 4. and (5) a rubber nail cap.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1, the invention comprises a rubber nail cap 4, a rubber nail framework 3 is fixed on the rubber nail cap 4, the upper end of the rubber nail framework 3 is conical, a plurality of prismatic latch teeth are fixed on the rubber nail framework 3 from top to bottom, each prismatic latch tooth is formed by integrally forming two symmetrical long teeth 1 and two symmetrical short teeth 2, the prismatic latch tooth at the uppermost end of the rubber nail framework 3 and the short teeth 2 of two adjacent prismatic latch teeth are plate-shaped, and the prismatic latch tooth at the lowermost end of the rubber nail framework 3 and the short teeth 2 of two adjacent prismatic latch teeth are plate-shaped.

The design of a prismatic latch structure is mainly adopted on the rubber nail framework 3, and the latch function is realized through the alternate operation of the long teeth 1 and the short teeth 2. When the rubber nail latch is clamped with the sheet metal hole, the long teeth 1 are in frictional contact with the hole wall, and the short teeth 2 are not in contact with the hole wall, so that the frictional resistance is reduced by 50%. When inserting, two long tooth 1 atress, when extracting, two long tooth 1 drive short tooth 2 atress simultaneously, realize the increase of gluey nail extraction power, finally realize the convenient of gluey nail and insert, the design conception of difficult extraction reaches the purpose that makes things convenient for the convenient installation of staff.

The novel glue nail is also greatly improved in light weight, and the weight of parts is reduced by 20-25% on the original basis.

The invention has the beneficial effects that:

1. the technical problem that the EVA rubber nails of the expansion rubber blocks are difficult to clamp is effectively solved;

2. the self weight of the elastic rubber nail is 10-15% lighter than that of the traditional rubber nail. (ii) a

3. The cost of the elastic rubber nail has obvious advantages compared with the traditional rubber nail;

4. the assembly efficiency of the staff is improved by more than 20%;

5. effectively improving the labor intensity of the staff.

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