CN207728426U - A kind of automobile silencing discharge duct - Google Patents
A kind of automobile silencing discharge duct Download PDFInfo
- Publication number
- CN207728426U CN207728426U CN201721866791.1U CN201721866791U CN207728426U CN 207728426 U CN207728426 U CN 207728426U CN 201721866791 U CN201721866791 U CN 201721866791U CN 207728426 U CN207728426 U CN 207728426U
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- China
- Prior art keywords
- sound absorbing
- porous sound
- inner tube
- absorbing cotton
- pipe
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Abstract
The utility model discloses a kind of automobile silencing discharge ducts, including outer tube and inner tube, the inner wall of the outer tube offers the holding tank of annular, holding tank is internally provided with inner tube, the flexible silencing cotton of gap filling between the outer surface of said inner tube and the inner wall of outer tube, pipe is inserted in being internally provided with for said inner tube, it is inserted in fixedly embedded the first porous sound absorbing cotton for having disk-shaped shape at the bosom of pipe, it is inserted in and is cased with a pair of second porous sound absorbing cotton circular in configuration outside the outer surface of pipe, the first porous sound absorbing cotton is located at the inside of a pair of second porous sound absorbing cotton, being inserted on pipe in a pair of second porous sound absorbing cotton is uniformly provided with several through-holes；By flexible silencing cotton, the effect of the first porous sound absorbing cotton and the second porous sound absorbing cotton, noise is effectively absorbed, and buffering can be played the role of to inner tube, noise reduction is apparent；Bellows is set, prevents the lubricating oil of filling from entering in inner tube, to improve security performance.
Description
Technical field
The utility model is related to technical field of automobile accessories, specifically a kind of automobile silencing discharge duct.
Background technology
Exhaust pipe is a part for engine exhaust system, is used to be discharged the exhaust gas generated in engine working process.
Automobile will produce a large amount of noises during the work time, outside noise transmission to automobile, will generate noise pollution to motor vehicle environment.Automobile
Exhaust noise is mainly made of periodical exhaust noise, turbulent flow noise and air column resonance noise.For some horizontal bar engines,
The resonance noise that cylinder and exhaust pipe are formed is most important source of students.Since engine exhaust port periodically opens and closes
And the noise that the periodic pressure generated is excited claims most important ingredient in periodical exhaust noise and exhaust noise.
The utility model of Chinese patent notification number CN2668860Y discloses a kind of automotive muffler, by outer tube and gas point
Flow tube is constituted, and the inlet end of outer tube and outlet side be respectively arranged with air inlet end cap and outlet end cap, be provided in air inlet end cap into
Gas ending cover hole is provided with outlet ending cover hole in outlet end cap, and outer tube is provided with partition board, the periphery of partition board and the inner wall of outer tube
Be fixedly connected, drop-leg be provided on partition board, drop-leg is fixed with partition board, the outlet of the inlet end of drop-leg in
The outlet side of air inlet ending cover hole, drop-leg is exported in outlet ending cover hole, is both provided in the bottom of outlet end cap and partition board
One drainage hole.The automotive muffler is reactive muffler, and only there are one inlet end, the sectional areas of drop-leg and each chamber
It is with low uncertainty.
To reduce exhaust noise, it is one and its maturation that motor vehicle, which generally uses silencing exhaust pipe, automobile silencing exhaust pipe,
Product, basic structure and operation principle decades are almost unchanged, are now badly in need of a kind of structure novel and more general noise reduction is produced
The better silencing exhaust pipe of erasure effect of product.
Utility model content
The purpose of this utility model is to provide a kind of automobile silencing discharge ducts, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the utility model provides the following technical solutions：
A kind of automobile silencing discharge duct, including outer tube and inner tube, the inner wall of the outer tube offer the holding tank of annular,
Holding tank is internally provided with inner tube, the flexible noise reduction of gap filling between the outer surface of said inner tube and the inner wall of outer tube
Pipe is inserted in cotton, being internally provided with for said inner tube, and being inserted in fixedly embedded at the bosom of pipe has more than the first of disk-shaped shape
Hole acoustical cotton is inserted in and is cased with a pair of second porous sound absorbing cotton circular in configuration, first porous sound absorbing outside the outer surface of pipe
Cotton is located at the inside of a pair of second porous sound absorbing cotton, if being inserted on pipe in a pair of second porous sound absorbing cotton is uniformly provided with
Dry through-hole.
As further program of the utility model：Oil filler point is offered in the circumferential end surfaces of the middle of the outer tube.
As the utility model further scheme：Activity is embedded with plunger in the oil filler point.
As the utility model further scheme：Further include bellows, one end of the bellows and the outer tube
Inner surface connection, the inner surface of the other end of the bellows and said inner tube connects；The ripple duct occlusion said inner tube
Gap between end and the holding tank end.
Compared with prior art, the utility model has the beneficial effects that：By flexible silencing cotton, the first porous sound absorbing cotton and
The effect of second porous sound absorbing cotton effectively absorbs noise, and can play the role of buffering to inner tube, and noise reduction is bright
It is aobvious；Bellows is set, prevents the lubricating oil of filling from entering in inner tube, to improve security performance.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of automobile silencing discharge duct.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Referring to Fig. 1, a kind of automobile silencing discharge duct, including outer tube 1 and inner tube 2, the inner wall of the outer tube 1 offer
The holding tank of annular, holding tank are internally provided with inner tube 2, the gap between the outer surface and the inner wall of outer tube 1 of said inner tube 2
Flexible silencing cotton 3 is filled, pipe 6 is inserted in being internally provided with for said inner tube 2, and being inserted in fixedly embedded at the bosom of pipe 6 has
First porous sound absorbing cotton 7 of disk-shaped shape is inserted in and is cased with a pair of second porous sound absorbing circular in configuration outside the outer surface of pipe 6
Cotton 8, the first porous sound absorbing cotton 7 are located at the inside of a pair of second porous sound absorbing cotton 8, are located at a pair of second porous sound absorbing cotton 8
Interior being inserted on pipe 6 is uniformly provided with several through-holes 10；Pass through flexible silencing cotton 3, the first porous sound absorbing cotton 7 and the second porous suction
The effect of sound cotton 8 effectively absorbs noise, and can play the role of buffering to inner tube 2, and noise reduction is apparent.
Oil filler point 4 is offered in the circumferential end surfaces of the middle of the outer tube 1.
Activity is embedded with plunger 5 in the oil filler point 4.
Further include bellows 9, one end of the bellows 9 is connect with the inner surface of the outer tube 1, the bellows 9
The other end is connect with the inner surface of said inner tube 2；The bellows 9 close 2 end of said inner tube and the holding tank end it
Between gap；Bellows 9 is set, prevents the lubricating oil of filling from entering in inner tube 2, to improve security performance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is set
Set ", " connected " and " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or one
Ground connects；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements.It is right
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (4)
1. a kind of automobile silencing discharge duct, including outer tube and inner tube, which is characterized in that the inner wall of the outer tube offers annular
Holding tank, holding tank is internally provided with inner tube, and the gap filling between the outer surface of said inner tube and the inner wall of outer tube has
Pipe is inserted in flexible silencing cotton, being internally provided with for said inner tube, and being inserted in fixedly embedded at the bosom of pipe has disk-shaped shape
The first porous sound absorbing cotton, be inserted in and be cased with a pair of second porous sound absorbing cotton circular in configuration outside the outer surface of pipe, described first
Porous sound absorbing cotton is located at the inside of a pair of second porous sound absorbing cotton, being inserted on pipe uniformly in a pair of second porous sound absorbing cotton
Offer several through-holes.
2. automobile silencing discharge duct according to claim 1, which is characterized in that the circumferential end of the middle of the outer tube
Oil filler point is offered on face.
3. automobile silencing discharge duct according to claim 2, which is characterized in that activity is embedded with column in the oil filler point
Plug.
4. automobile silencing discharge duct according to claim 1, which is characterized in that further include bellows, the bellows
One end connect with the inner surface of the outer tube, the inner surface of the other end of the bellows and said inner tube connects；The wave
Gap between line duct occlusion said inner tube end and the holding tank end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721866791.1U CN207728426U (en) | 2017-12-27 | 2017-12-27 | A kind of automobile silencing discharge duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721866791.1U CN207728426U (en) | 2017-12-27 | 2017-12-27 | A kind of automobile silencing discharge duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728426U true CN207728426U (en) | 2018-08-14 |
Family
ID=63087209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721866791.1U Active CN207728426U (en) | 2017-12-27 | 2017-12-27 | A kind of automobile silencing discharge duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728426U (en) |
-
2017
- 2017-12-27 CN CN201721866791.1U patent/CN207728426U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |