CN210141166U

CN210141166U - Vehicle exhaust muffler

Info

Publication number: CN210141166U
Application number: CN201921048536.5U
Authority: CN
Inventors: 陆楠; 刘湃; 朱廉洁; 邱群麟; 张颖; 齐钢; 沈建东
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-03-13
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses a vehicle exhaust muffler. The vehicle exhaust muffler includes: the tuning device comprises a tubular shell and a tuning pipe arranged in the shell, wherein the tuning pipe and the shell extend in the same direction, and a sound through hole is formed in the pipe wall of the tuning pipe; the baffle, the baffle inlays to be established between the casing with the tuning pipe, the mounting hole has been seted up on the baffle, the baffle passes through the mounting hole cover is established on the tuning pipe, the outside border butt of baffle is in on the inner wall of casing, the part that lies in on the baffle the casing with between the tuning pipe is seted up a plurality of bloops that link up the baffle. The utility model provides a vehicle exhaust muffler has reduced the installation complexity of amortization part in the muffler, has reduced the preparation degree of difficulty and cost.

Description

Vehicle exhaust muffler

Technical Field

The utility model relates to a vehicle parts technical field especially relates to a vehicle exhaust muffler.

Background

Silencers are commonly used in vehicle exhaust systems to eliminate high and medium frequency noise transmitted by the engine or to reduce noise during idle conditions of the vehicle.

In the prior art, the silencer is generally provided with silencing cotton made of glass fiber materials inside to eliminate noise. The silencing cotton is a porous medium, can absorb the acoustic energy of broad band, and the silencing cotton fills to the muffler inside through bagging-off or the form that the machine directly filled, needs extra preforming technology or filling equipment, and the installation complexity of the interior amortization part of muffler remains to be reduced, and the cost of manufacture remains to be reduced.

Therefore, it is necessary to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vehicle exhaust muffler to solve the problem that exists among the prior art, reduce the installation complexity of amortization part in the muffler, reduce the preparation degree of difficulty and cost.

The utility model provides a vehicle exhaust muffler, include: the tuning device comprises a tubular shell and a tuning pipe arranged in the shell, wherein the tuning pipe and the shell extend in the same direction, and a sound through hole is formed in the pipe wall of the tuning pipe; the baffle, the baffle inlays to be established between the casing with the tuning pipe, the mounting hole has been seted up on the baffle, the baffle passes through the mounting hole cover is established on the tuning pipe, the outside border butt of baffle is in on the inner wall of casing, the part that lies in on the baffle the casing with between the tuning pipe is seted up a plurality of bloops that link up the baffle.

Optionally, the aperture of the muffling hole is r, and r is less than or equal to 1 mm.

Optionally, the baffle is an annular plate, and the silencing holes are arranged along the annular direction of the baffle.

Optionally, the number of the sound through holes is multiple, and the multiple sound through holes are arranged along the circumferential direction of the tuning pipe.

Optionally, a plurality of tuning pipes are arranged in the shell, and the tuning pipes are arranged in an axial direction of the shell; the baffle is arranged on any one of the tuning pipes.

Optionally, the casing is covered with end covers along both axial ends, a plurality of tuning holes are formed in the end covers, and the plurality of tuning holes are respectively penetrated through the plurality of tuning pipes in a one-to-one corresponding manner.

Optionally, for any tuning pipe, the sound passing holes are located between the baffle and the end cover through which the tuning pipe passes.

Optionally, the baffle sealing sleeve is arranged on the tuning pipe, and the outer edge of the baffle is in sealing and abutting contact with the inner wall of the shell.

Optionally, the end caps are welded or lock-seamed to the housing.

Optionally, the housing, the tuning tube, and the baffle are all made of stainless steel.

The utility model provides a vehicle exhaust muffler, through set up a plurality of bloops on the baffle that is located between casing and tuning pipe, can form the low sound quality in the cavity that casing and tuning pipe were injectd, the resonance sound absorption structure of high impedance, can cover the sound absorption frequency of broad simultaneously, reach the noise cancelling effect the same with the amortization cotton, during the installation, can fix the baffle on the tuning pipe afterwards the baffle along with the tuning pipe inlays jointly and establishes into the casing, the amortization cotton has been replaced, the mounting process of amortization part in the muffler has been simplified, the manufacturing cost is reduced.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of a vehicle exhaust muffler according to an alternative embodiment of the present invention.

Fig. 2 is a front view of fig. 1.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

Figure 1 is a schematic structural view of a vehicle exhaust muffler according to an alternative embodiment of the present invention,

fig. 2 is a front view of fig. 1. As shown in fig. 1 to 2, the present invention provides a vehicle exhaust muffler, including: a tubular casing 1, a tuning pipe 2 provided inside the casing 1, and a baffle 3.

Referring to fig. 1 to 2, the tuning pipe 2 extends in the same direction as the housing 1, and a sound through hole 21 is formed in a pipe wall of the tuning pipe 2; the baffle 3 is embedded between the shell 1 and the tuning pipe 2, a mounting hole is formed in the baffle 3, the baffle 3 is sleeved on the tuning pipe 2 through the mounting hole, the outer side edge of the baffle 3 is abutted against the inner wall of the shell 1, and a plurality of silencing holes 31 penetrating through the baffle 3 are formed in the part, located between the shell 1 and the tuning pipe 2, of the baffle 3.

The utility model provides a vehicle exhaust muffler, through set up a plurality of bloops 31 on baffle 3 that is located between casing 1 and tuning pipe 2, can form the low sound quality in the cavity that casing 1 and tuning pipe 2 injectd, the resonance sound absorption structure of high impedance, can cover the sound absorption frequency of broad simultaneously, reach the noise cancelling effect the same with the amortization cotton, during the installation, can fix baffle 3 earlier on tuning pipe 2 then baffle 3 along with the tuning pipe 2 inlay jointly and establish into casing 1 in, the amortization cotton has been replaced, the mounting process of amortization part in the muffler has been simplified, the manufacturing cost is reduced.

Further, baffle 3 and tuning pipe 2 can be connected through the mode of pressure equipment, and casing 1 can be rolled up through panel and form, rolls up the in-process and is connected the border of panel through the technology of welding or lock seam afterwards with baffle 3 and tuning pipe 2 cladding wherein, realizes that casing 1 stitches along the axial.

Preferably, the aperture of the muffling hole 31 is r, and r is less than or equal to 1 mm. This embodiment is through setting up the micropore that the aperture is less than 1mm with the noise damping hole 31, increases the effect of sound absorption amortization of noise damping hole 31.

As an optional implementation process, the baffle 3 is an annular plate, and a plurality of the muffling holes 31 are arranged along the circumferential direction of the baffle 3. This embodiment can make baffle 3 form an annular amortization structure along the hoop, has improved noise elimination effect.

Optionally, the number of the sound through holes 21 is plural, and the plural sound through holes 21 are arranged in a circumferential direction of the tuning pipe 2. The sound through hole 21 in this embodiment can make the sound wave entering the tuning pipe 2 penetrate between the tuning pipe 2 and the casing 1, and play a role of sound attenuation through the sound attenuation hole 31 on the baffle 3.

As an optional implementation process, a plurality of tuning pipes 2 are arranged in the housing 1, and the tuning pipes 2 are arranged in an axial direction of the housing 1; the baffle 3 is arranged on any one of the tuning pipes 2. This embodiment can realize making an uproar, further improves the noise cancelling effect to the secondary amortization of sound wave through a plurality of tuning pipe 2 that set up.

Preferably, the two ends of the housing 1 along the axial direction are covered with end covers 4, the end covers 4 are provided with tuning holes, and the plurality of tuning pipes 2 are respectively sealed and penetrated through the plurality of tuning holes in a one-to-one correspondence manner. The embodiment can ensure that the noise enters the silencer only through the tuning pipe 2, the silencing reliability of the silencer is improved, and the noise after silencing can be discharged only through the tuning pipe 2, so that the sealing performance of the cavity defined by the tuning pipe 2 and the shell 1 is ensured.

Optionally, for any one tuning pipe 2, the sound passing holes 21 are located between the baffle 3 and the end cover 4 through which the tuning pipe 2 passes. For the tuning pipe 2 positioned at the inlet, the sound penetrating hole 21 is formed to enable sound waves to penetrate between the tuning pipe 2 and the shell 1; for the tuning pipe 2 at the outlet, the sound through hole 21 is formed to allow the sound wave after being silenced to reenter the tuning pipe 2 and to be discharged from the tuning pipe 2 out of the silencer.

As an optional implementation process, the baffle 3 is sleeved on the tuning pipe 2 in a sealing manner, and the outer edge of the baffle 3 abuts against the inner wall of the shell 1 in a sealing manner. This embodiment can make the sound wave between the tuning pipe 2 and the housing 1 pass through only the muffling hole 31 to improve the muffling effect of the muffling hole 31.

Preferably, the end cap 4 is welded or lock-seamed to the housing 1. The welding or lock seam connection has the advantages of stable and reliable installation, and can increase the installation stability between the end cover 4 and the shell 1.

As an optional implementation process, the shell 1, the tuning pipe 2 and the baffle 3 are all made of stainless steel, the shell 1 and the tuning pipe 2 are made of stainless steel, so that the shell 1 and the tuning pipe 2 can be conveniently rolled and formed, the baffle 3 is made of stainless steel, the silencing hole 31 can be conveniently punched on the baffle 3, and the preparation difficulty and the preparation cost are reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A vehicle exhaust muffler, comprising:

the tuning device comprises a tubular shell and a tuning pipe arranged in the shell, wherein the tuning pipe and the shell extend in the same direction, and a sound through hole is formed in the pipe wall of the tuning pipe;

the baffle, the baffle inlays to be established between the casing with the tuning pipe, the mounting hole has been seted up on the baffle, the baffle passes through the mounting hole cover is established on the tuning pipe, the outside border butt of baffle is in on the inner wall of casing, the part that lies in on the baffle the casing with between the tuning pipe is seted up a plurality of bloops that link up the baffle.

2. The vehicle exhaust muffler according to claim 1, wherein the hole diameter of the muffling hole is r, r ≦ 1 mm.

3. The vehicle exhaust muffler according to claim 2, wherein the baffle is an annular plate, and a plurality of the muffling holes are arranged in a circumferential direction of the baffle.

4. The vehicle exhaust muffler according to claim 3, wherein the number of the sound through holes is plural, and the plural sound through holes are arranged in a circumferential direction of the tuning pipe.

5. The vehicle exhaust muffler according to claim 4, wherein a plurality of tuning pipes are provided in the housing, the plurality of tuning pipes being arranged in an axial direction of the housing; the baffle is arranged on any one of the tuning pipes.

6. The vehicle exhaust muffler according to claim 5, wherein end caps are covered on both ends of the housing in the axial direction, the end caps are provided with tuning holes, and the plurality of tuning pipes are hermetically inserted through the plurality of tuning holes in a one-to-one correspondence manner.

7. The vehicle exhaust muffler according to claim 6, wherein for any one of the tuning pipes, the plurality of sound passing holes are located between the baffle and an end cap through which the tuning pipe passes.

8. The vehicle exhaust muffler according to claim 7 wherein said baffle gland is provided on said tuning tube, an outer edge of said baffle sealingly abutting an inner wall of said housing.

9. The vehicle exhaust muffler according to claim 8, wherein the end cap is welded or lock-seamed to the housing.

10. The vehicle exhaust muffler according to any one of claims 1 to 9, wherein the housing, the tuning pipe, and the baffle are each made of stainless steel.