CN216278080U

CN216278080U - Automobile silencer

Info

Publication number: CN216278080U
Application number: CN202122641828.3U
Authority: CN
Inventors: 李辉
Original assignee: Foshan Ruiaote Mould Technology Co ltd
Current assignee: Foshan Ruiaote Mould Technology Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-04-12
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses an automobile silencer, which comprises an outer cylinder, an air inlet pipe and an air outlet pipe, wherein sound-absorbing cotton blocks are fixedly arranged in the outer cylinder and divide a cylinder cavity of the outer cylinder into a front cavity and a rear cavity; the tail gas noise of the automobile silencer enters the front cavity through the air inlet pipe, is diffused and then is silenced by the sound-absorbing cotton block, and is diffused and then is dispersed and weakened through the air outlet pipes to be exhausted through the rear cavity, so that the automobile silencer has the advantages of better silencing effect, simple structure and low production and manufacturing cost, and is beneficial to wide popularization and use.

Description

Automobile silencer

Technical Field

The utility model belongs to the technical field of automobiles, and particularly relates to an automobile silencer.

Background

With the increase of the running amount of urban automobiles, the urban noise pollution is serious, and the existing automobile silencer is relatively complex in structural design, relatively high in production and manufacturing cost and inconvenient to widely popularize and use.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide the automobile silencer which has simple structure and low production and manufacturing cost and is beneficial to wide popularization and use.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an automobile silencer, including outer barrel, intake pipe and outlet duct, outer barrel is inside to be fixed to be equipped with to inhale the cotton piece of sound and separate into preceding cavity and back cavity with the cylinder chamber of outer barrel, the intake pipe has outer inlet end and interior end of giving vent to anger, outer inlet end evagination is in outer barrel, in give vent to anger the end extend to in preceding cavity and with inhale the cotton piece of sound interval of having, the outlet duct includes a plurality of roots and has interior inlet end respectively and go out the inlet end, in the inlet end extend to in the back cavity and with inhale the cotton piece of sound interval of having, the end evagination of giving vent to anger is in outer barrel outward.

The tail gas noise of the automobile silencer enters the front cavity through the air inlet pipe, is diffused and then is silenced by the sound-absorbing cotton block, and is diffused and then is dispersed and weakened through the air outlet pipes to be exhausted through the rear cavity, so that the automobile silencer has the advantages of better silencing effect, simple structure and low production and manufacturing cost, and is beneficial to wide popularization and use.

As an improvement scheme, a polyurethane outer sleeve is fixedly sleeved outside the outgoing air end of the air outlet pipe, and the effects of noise reduction and noise reduction can be further achieved.

The utility model has the following beneficial effects:

the automobile silencer has the characteristics of better silencing effect, simple structure, low production and manufacturing cost and contribution to wide popularization and use.

Drawings

Fig. 1 is a schematic view showing a simple structure of a muffler device for an automobile according to the present invention.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea of the utility model claimed.

As shown in fig. 1, the automobile silencer comprises an outer cylinder, an air inlet pipe 7 and an air outlet pipe 8, the sound-absorbing cotton block 4 is fixedly arranged inside the outer cylinder, the cylinder cavity of the outer cylinder is divided into a front cavity 5 and a rear cavity 6, the air inlet pipe 7 is provided with an outer air inlet end 70 and an inner air outlet end 71, the outer air inlet end 70 protrudes out of the outer cylinder, the inner air outlet end 71 extends into the front cavity 5 and has a distance with the sound-absorbing cotton block 4, the air outlet pipe 8 comprises a plurality of air inlet ends 80 and an outer air outlet end 81, the inner air inlet end 80 extends into the rear cavity 6 and has a distance with the sound-absorbing cotton block 4, and the outer air outlet end 81 protrudes out of the outer cylinder. The sound-absorbing cotton block 4 can be fixed by gluing or by covering with a net frame and fastening on the inner wall of the outer cylinder.

The outer cylinder body specifically comprises a round sleeve shell 1, a front end sealing plate 2 and a rear end sealing plate 3, wherein the front end sealing plate 2 is welded and fixed at the front end of the round sleeve shell 1, and the rear end sealing plate 3 is welded and fixed at the rear end of the round sleeve shell 1. The front end sealing plate 2 has a first insertion hole 20 through which the air inlet pipe 7 is inserted, and the rear end sealing plate 3 has a second insertion hole 30 through which the air outlet pipe 8 is inserted. The air inlet pipe 7 is inserted in the first insertion hole 20 and is welded and fixed, and the air outlet pipe 8 is inserted in the second insertion hole 30 and is welded and fixed. The outer cylinder body, the air inlet pipe 7 and the air outlet pipe 8 are simple and convenient to produce and manufacture.

A polyurethane outer sleeve 9 is fixedly sleeved outside the outer air outlet end 81, a sleeve hole 90 is formed in the polyurethane outer sleeve 9 corresponding to the air outlet pipe 8, and the outer air outlet end 81 is fixedly inserted into the sleeve hole 90. The polyurethane outer sleeve 9 may be fixed by gluing to the rear end closure plate 3.

The tail gas noise of the automobile silencer enters the front cavity 5 through the air inlet pipe 7 for diffusion, is silenced by the sound-absorbing cotton block 4, is diffused in the rear cavity 6 and is dispersed and weakened through the air outlet pipes 8 for silencing and discharging, the silencing device has the advantages of better silencing effect, simple structure and low production and manufacturing cost, and is beneficial to wide popularization and use.

Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides an automobile silencer, its characterized in that, includes outer barrel, intake pipe and outlet duct, outer barrel inside fixed be equipped with inhale the cotton piece of sound and will cavity and rear chamber before the section of thick bamboo chamber of outer barrel is separated into, the intake pipe has outer inlet end and interior end of giving vent to anger, outer inlet end evagination in outer barrel, interior end of giving vent to anger extend to in the front chamber and with the interval has between the cotton piece of sound absorption, the outlet duct includes a plurality of roots and has interior inlet end and the outer end of giving vent to anger respectively, interior inlet end extend to in the rear chamber and with it has the interval to inhale between the cotton piece of sound, give vent to anger the end evagination in outer barrel outward.

2. The muffler of claim 1, wherein a polyurethane outer cover is fixedly installed on the outer portion of the outer outlet.

3. The muffler apparatus according to claim 1 or 2, wherein the outer cylinder includes a round jacket outer shell, a front end sealing plate having a first insertion hole through which the intake pipe is inserted, and a rear end sealing plate having a second insertion hole through which the outlet pipe is inserted.

4. The muffler assembly of claim 3, wherein the front end closure plate is welded to the front end of the round jacket shell and the rear end closure plate is welded to the rear end of the round jacket shell.

5. The muffler of claim 3, wherein the inlet pipe is inserted into the first insertion hole and fixed by welding, and the outlet pipe is inserted into the second insertion hole and fixed by welding.

6. The muffler of claim 2, wherein the polyurethane outer cover has a hole corresponding to the outlet pipe, and the outlet end is inserted into the hole.