CN210310203U

CN210310203U - Composite sound-absorbing felt easy to assemble

Info

Publication number: CN210310203U
Application number: CN201921140390.7U
Authority: CN
Inventors: 丁世林
Original assignee: Shanghai Huate Enterprise Group Co ltd
Current assignee: Shanghai Huate Enterprise Group Co ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-14
Anticipated expiration: 2029-07-19

Abstract

The utility model relates to an easily compound sound felt of inhaling of assembly, this compound sound felt of inhaling include heavy coat, set up the felt layer on heavy coat and set up the fastening device between heavy coat and felt layer, fastening device include the bottom insert establish the inside first fastener of heavy coat and inlay establish in felt layer inside and with the second fastener of the top looks adaptation of first fastener. Compared with the prior art, the utility model discloses a set up fastening device between heavy coating and felt layer, the mode that can adopt mechanical fastening will be heavy coating and felt layer complex together, finally obtains the complex sound felt of inhaling, has avoided the burnt paste and the welding skew scheduling problem that traditional ultrasonic welding mode exists, has improved product quality greatly, has reduced product cost.

Description

Composite sound-absorbing felt easy to assemble

Technical Field

The utility model belongs to the technical field of automotive interior spare, a sound felt is inhaled to easily assembly's complex is related to.

Background

The sound-absorbing felt is a common automotive interior part and can reduce noise pollution. Most of the existing sound-absorbing felts are of composite structures, mainly comprise a heavy coating made of EPDM (ethylene propylene diene monomer) and a felt layer made of PET (polyethylene terephthalate), and the heavy coating and the felt layer are compounded in an ultrasonic welding mode.

The ultrasonic welding process mainly comprises the following steps: the high-frequency friction on the surface of the workpiece is utilized to rapidly generate heat among molecules, when the heat is enough to melt the workpiece, the ultrasonic vibration is stopped, and the surface of the workpiece is solidified by melting to complete the composite processing. The composite method mainly has the following problems:

1. when the heat is too high, the surface of the recoated layer is heated to generate burnt odor, which is contrary to the requirement of various current host factories on odor values.

2. The ultrasonic welding technology is still in an automatic initial stage at present, and the defects of welding deviation, high maintenance cost and the like exist in the welding process, so that the production cost of parts is increased.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to provide a composite sound-absorbing felt which is easy to assemble in order to overcome the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides an easily compound sound felt of inhaling of assembly, this compound sound felt of inhaling includes heavy coating, sets up the felt layer on heavy coating and sets up the fastening device between heavy coating and felt layer, fastening device include the bottom insert establish the inside first fastener of heavy coating and inlay establish inside the felt layer and with the second fastener of the top looks adaptation of first fastener. During compounding, the felt layer is placed on the recoating layer, the second fastening piece is aligned to the corresponding first fastening piece and then is pressed tightly, the second fastening piece and the first fastening piece are fixedly assembled together, and then the quick compound assembly of the recoating layer and the felt layer is achieved.

Further, first fastener including inlay and establish the inside glued membrane base of recoating and set up the glued membrane on glued membrane base, the top protrusion in recoating's upper surface of this glued membrane. The glue nail base is used for fixing the glue nail, and the glue nail can be matched with the second fastener.

Furthermore, the second fastener comprises a sleeve embedded in the felt layer, and the bottom of the sleeve is provided with a glue nail jack matched with the glue nail. And inserting the top of the glue nail into the glue nail insertion hole so as to fixedly assemble the first fastening piece and the second fastening piece together.

Further, the side of glue nail evenly laid a plurality of slope inserted sheets along circumference, the inner wall of glue nail jack on be equipped with the slope separation blade of slope inserted sheet looks adaptation. Pressing the second fastener to the first fastener to make the top of the rubber nail move into the rubber nail jack continuously; after the inclined insertion sheet penetrates between the inclined separation blades, the pressing on the second fastening piece is removed, at the moment, under the action of the elastic restoring force of the felt layer, the second fastening piece moves reversely relative to the first fastening piece, at the moment, due to the clamping effect of the inclined separation blades on the inclined insertion sheet, the continuous reverse movement of the second fastening piece and the first fastening piece is limited, and then the fixed assembly of the first fastening piece and the second fastening piece is realized.

Furthermore, the inclined insertion sheet is a flexible inclined insertion sheet. The inclined insertion piece has certain flexibility, and when the top of the rubber nail continuously moves into the rubber nail insertion hole, the inclined insertion piece can be attached to the side face of the rubber nail under the compression of the inclined separation piece so that the rubber nail can continuously move to the deep part of the rubber nail insertion hole; after the inclined insertion piece moves to the upper part of the inclined separation blade, the inclined insertion piece is restored to the original shape due to the separation of the compression of the inclined separation blade and is matched with the inclined separation blade to realize non-return.

Furthermore, a glue solution storage cavity matched with the glue nail is arranged in the glue nail jack. The glue solution storage cavity is internally provided with glue solution, when the first fastening piece and the second fastening piece are installed in place, the glue solution in the glue solution storage cavity flows out and is distributed between the first fastening piece and the second fastening piece, and the composite effect is further enhanced.

Furthermore, the bottom of the glue solution storage cavity is provided with a sealing membrane, and the top of the glue nail is provided with a pointed end matched with the sealing membrane. When the top of the rubber nail moves in place in the rubber nail jack, the sharp head punctures the sealing membrane to make the rubber solution in the rubber solution storage cavity flow out; after a certain time, the glue is solidified and the first fastener and the second fastener are tightly fixed together.

Furthermore, a plurality of fastening mechanisms are uniformly distributed between the heavy coating and the felt layer so as to completely compound the heavy coating and the felt layer together.

Compared with the prior art, the utility model has the characteristics of it is following:

1) the fastening mechanism is arranged between the heavy coating and the felt layer, so that the heavy coating and the felt layer can be composited together in a mechanical fastening mode to finally obtain the composite sound-absorbing felt, the problems of scorching, welding offset and the like in the traditional ultrasonic welding mode are solved, the product quality is greatly improved, and the product cost is reduced;

2) except that the installation of fastening through the card cooperation mode of stopping of slope inserted sheet and slope separation blade between first fastener and the second fastener, still further utilize the glue solution of glue solution storage intracavity to carry out sticky to first fastener and second fastener, make first fastener and second fastener can install together steadily, and then improved the life of compound sound felt of inhaling.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the first fastener and the second fastener of the present invention;

the notation in the figure is:

1-recoating layer, 2-felt layer, 3-first fastener, 301-glue nail base, 302-glue nail, 303-inclined inserting piece, 304-pointed end, 4-second fastener, 401-sleeve, 402-glue nail inserting hole, 403-inclined baffle plate, 404-glue solution storage cavity and 405-sealing membrane.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example (b):

an easily assembled composite sound-absorbing felt comprises a heavy coating layer 1, a felt layer 2 arranged on the heavy coating layer 1, and a fastening mechanism arranged between the heavy coating layer 1 and the felt layer 2, wherein the fastening mechanism comprises a first fastening piece 3 with the bottom inserted in the heavy coating layer 1 and a second fastening piece 4 embedded in the felt layer 2 and matched with the top of the first fastening piece 3.

As shown in fig. 2, the first fastening member 3 includes a glue nail base 301 embedded inside the heavy coating 1 and a glue nail 302 arranged on the glue nail base 301, and the top of the glue nail 302 protrudes from the upper surface of the heavy coating 1. The second fastening member 4 includes a sleeve 401 embedded inside the felt layer 2, and a nail insertion hole 402 adapted to the nail 302 is formed at the bottom of the sleeve 401.

The side of the rubber nail 302 is evenly provided with a plurality of inclined insertion pieces 303 along the circumferential direction, and the inner wall of the rubber nail insertion hole 402 is provided with inclined separation blades 403 matched with the inclined insertion pieces 303. The angled insert 303 is a flexible angled insert.

A glue solution storage cavity 404 matched with the glue nail 302 is arranged in the glue nail jack 402. The bottom of the glue solution storage cavity 404 is provided with a sealing membrane 405, and the top of the glue nail 302 is provided with a pointed end 304 matched with the sealing membrane 405. A plurality of fastening mechanisms are uniformly distributed between the heavy coating layer 1 and the felt layer 2.

When the composite sound-absorbing felt easy to assemble is assembled in a composite mode, the felt layer 2 is placed on the recoating layer 1, the second fastening pieces 4 are aligned to the corresponding first fastening pieces 3 and then are pressed tightly, the second fastening pieces 4 and the first fastening pieces 3 are fixedly assembled together, and then the quick composite assembly of the recoating layer 1 and the felt layer 2 is achieved.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides an easy compound sound felt that inhales of assembly which characterized in that, this compound sound felt that inhales includes heavy coating (1), sets up felt layer (2) on heavy coating (1) and sets up the fastening device between heavy coating (1) and felt layer (2), fastening device include that the bottom inserts first fastener (3) of establishing in the inside of heavy coating (1) and inlay and establish in felt layer (2) inside and with second fastener (4) of the top looks adaptation of first fastener (3).

2. The composite sound absorbing felt easy to assemble according to claim 1, wherein the first fastening member (3) comprises a rubber nail base (301) embedded inside the heavy coating (1) and a rubber nail (302) arranged on the rubber nail base (301), and the top of the rubber nail (302) protrudes out of the upper surface of the heavy coating (1).

3. The composite sound-absorbing felt easy to assemble as claimed in claim 2, wherein the second fastening member (4) comprises a sleeve (401) embedded inside the felt layer (2), and the bottom of the sleeve (401) is provided with a glue nail insertion hole (402) matched with the glue nail (302).

4. The composite sound absorbing felt easy to assemble according to claim 3, wherein the side surface of the rubber nail (302) is uniformly provided with a plurality of inclined insertion pieces (303) along the circumferential direction, and the inner wall of the rubber nail insertion hole (402) is provided with inclined separation pieces (403) matched with the inclined insertion pieces (303).

5. An easily assembled composite sound absorbing felt according to claim 4, wherein the inclined insert (303) is a flexible inclined insert.

6. The composite sound absorbing felt easy to assemble as claimed in claim 3, wherein the glue storage cavity (404) matched with the glue nail (302) is arranged in the glue nail insertion hole (402).

7. The composite sound absorbing felt easy to assemble according to claim 6, wherein a sealing membrane (405) is arranged at the bottom of the glue solution storage cavity (404), and a pointed head (304) matched with the sealing membrane (405) is arranged at the top of the glue nail (302).

8. An easily assembled composite acoustic felt according to claim 1, characterized in that a plurality of fastening means are uniformly arranged between the heavy coating (1) and the felt layer (2).