CN215566207U

CN215566207U - Automobile exhaust corrugated pipe with noise reduction function

Info

Publication number: CN215566207U
Application number: CN202121659639.2U
Authority: CN
Inventors: 马志荣
Original assignee: Wuxi Chuangfan Auto Parts Co ltd
Current assignee: Wuxi Chuangfan Auto Parts Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-18
Anticipated expiration: 2031-07-20

Abstract

The application discloses car exhaust bellows with noise reduction function, it includes that bellows body and cover establish the outside steel wire net cover of bellows body, and the homogeneous shaping in both ends of bellows body has the connecting pipe, and the outside of bellows body sets up a plurality of sound sponge rings of inhaling, inhales the shape complementation of sound sponge ring and bellows body fold portion, sets up the sealing layer between bellows body and the steel wire net cover. This application can reduce the inside noise of automobile exhaust corrugated pipe, promotes exhaust system's noise cancelling effect.

Description

Automobile exhaust corrugated pipe with noise reduction function

Technical Field

The application relates to the field of automobile exhaust corrugated pipes, in particular to an automobile exhaust corrugated pipe with a noise reduction function.

Background

The corrugated pipe for automobile exhaust is also called as flexible pipe for automobile exhaust pipe, and is installed in the exhaust pipe between the engine exhaust branch pipe and the silencer to make the whole exhaust system in flexible connection, so as to play the roles of damping vibration and reducing noise, facilitating installation and prolonging the service life of the exhaust silencing system.

The corrugated pipe for automobile exhaust is mainly used for light vehicle, mini vehicle and passenger car, and has the structure that the corrugated pipe is externally covered with a steel wire net sleeve, and the straight edge sections at two ends are externally covered with snap rings, so that the silencing effect is better, and the corrugated pipe can be internally provided with an expansion joint or a net sleeve.

In view of the above-mentioned related art, the inventors believe that an automobile exhaust bellows is installed in an exhaust pipe between an engine exhaust branch pipe and a muffler, generates noise inside the automobile exhaust bellows when the engine is operated, and is transmitted to the outside through a wire mesh cover, affecting the muffling effect of an exhaust system.

SUMMERY OF THE UTILITY MODEL

In order to reduce the inside noise of car exhaust corrugated pipe, promote exhaust system's noise cancelling effect, this application provides a car exhaust corrugated pipe with noise reduction function.

The application provides a car exhaust bellows with noise reduction function adopts following technical scheme:

the utility model provides an automobile exhaust bellows with noise reduction function, establishes at the outside steel wire net cover of bellows body including bellows body and cover, the homogeneous shaping in both ends of bellows body has the connecting pipe, the outside of bellows body sets up a plurality of sound sponge rings of inhaling, inhale the shape complementation of sound sponge ring and bellows body fold portion, set up the sealing layer between bellows body and the steel wire net cover.

Through adopting above-mentioned technical scheme, set up a plurality of sound sponge rings of inhaling in the outside of bellows body to inhale the shape complementation of sound sponge ring and bellows body fold portion, utilize and inhale the inside noise of sound sponge ring absorption bellows body, the rethread sealing layer carries out the cladding to the outside of bellows and seals, reduces the possibility that the inside noise of bellows spreads, plays the effect of noise reduction.

Optionally, the one end that bellows body was kept away from to the connecting pipe all overlaps and is equipped with the sealing member, the sealing member includes first sealing ring and the second sealing ring of coaxial setting, the one end that bellows body was kept away from to first sealing ring and second sealing ring is passed through connecting portion and is connected, one side that first sealing ring is close to the steel wire net cover sets up the extension, the one end that the steel wire net cover is close to the extension extends to between extension and the connecting pipe.

Through adopting above-mentioned technical scheme, establish the tip at the connecting pipe with the sealing member cover, utilize the extension to compress tightly sealed to the both ends of wire mesh cover, make the difficult removal of wire mesh cover, promote the stability of wire mesh cover work, promote simultaneously and inhale the stability of sound sponge ring and sealing layer work.

Optionally, a baffle ring is fixedly arranged in the connecting pipe, and the baffle ring is abutted against one end of the second sealing ring.

Through adopting above-mentioned technical scheme, utilize to keep off the ring and carry on spacingly to the second sealing ring, keep off the ring simultaneously and cover the seam of second sealing ring and connecting pipe, reduce the possibility that tail gas got into between second sealing ring and the connecting pipe.

Optionally, a guide opening is formed in one side, away from the second sealing ring, of the baffle ring, and the guide opening gradually decreases in a direction from the second sealing ring to the second sealing ring.

Through adopting above-mentioned technical scheme, set up the direction mouth and make the transition of keeping off ring and connecting pipe inner wall junction more smooth, play the effect of direction to the flow of tail gas, reduce the inside noise of connecting pipe.

Optionally, a clamp is arranged outside the extension part, and the clamp is used for tightening the extension part.

Through adopting above-mentioned technical scheme, utilize the clamp to tighten the extension outside, reduce the possibility that the sealing member breaks away from the connecting pipe, make sealing member work more stable, also can play the effect of location to the wire netting cover simultaneously.

Optionally, a plurality of fastening screws are arranged on the first sealing ring, and the fastening screws penetrate through the first sealing ring and the connecting pipe and are in threaded connection with the second sealing ring.

Through adopting above-mentioned technical scheme, screw up a plurality of fastening screw, make first sealing ring, connecting pipe and second sealing ring link together, reduce the possibility that the sealing member breaks away from the connecting pipe.

Optionally, a connecting flange is arranged on one side, away from the first sealing ring, of the connecting portion.

Through adopting above-mentioned technical scheme, set up and connect the flange and make things convenient for the connecting pipe to be connected with the blast pipe.

Optionally, a sound-absorbing sponge layer is arranged between the steel wire mesh sleeve and the sealing layer.

Through adopting above-mentioned technical scheme, will inhale the sound sponge layer and set up between wire mesh cover and sealing layer, further promote the effect that automobile exhaust bellows inhaled the sound and fall the noise.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sound-absorbing sponge rings are arranged outside the corrugated pipe body, the shapes of the sound-absorbing sponge rings and the corrugated part of the corrugated pipe body are complementary, the sound-absorbing sponge rings are used for absorbing noise inside the corrugated pipe body, and the sealing layer is used for coating and sealing the outside of the corrugated pipe, so that the possibility of transmitting the noise inside the corrugated pipe is reduced, and the noise reduction effect is achieved;

2. by arranging the sealing element, the sealing element is sleeved at the end part of the connecting pipe, and the two ends of the steel wire mesh sleeve are compressed and sealed by the extension part, so that the steel wire mesh sleeve is not easy to move, the working stability of the steel wire mesh sleeve is improved, and the working stability of the sound-absorbing sponge ring and the sealing layer is improved;

3. through setting up the clamp, utilize the clamp to tighten the extension outside, reduce the possibility that the sealing member breaks away from the connecting pipe, make sealing member work more stable, also can play the effect of location to the wire netting cover simultaneously.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a sectional view showing the entire structure in the embodiment of the present application.

Description of reference numerals:

1. a bellows body; 11. a connecting pipe; 2. a steel wire mesh sleeve; 3. a sound absorbing sponge ring; 4. a sealing layer; 5. a sound absorbing sponge layer; 6. a seal member; 61. a first seal ring; 611. an extension portion; 612. fastening screws; 62. a second seal ring; 63. A connecting portion; 631. connecting a flange plate; 7. a baffle ring; 71. a guide port; 8. and (5) clamping a hoop.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses car exhaust bellows with noise reduction function. Referring to fig. 1 and 2, an automobile exhaust bellows with noise reduction function includes bellows body 1, inhale sound sponge ring 3, sealing layer 4, inhale sound sponge layer 5 and wire netting cover 2 that set gradually from inside to outside, has connecting pipe 11 at the equal integrated into one piece in both ends of bellows body 1, inhales the shape complementation of sound sponge ring 3 and 1 fold portion of bellows body, inhales sound sponge ring 3 and sets up a plurality of along 1 length direction of bellows body.

Referring to fig. 1 and 2, when tail gas passes through the interior of the corrugated pipe body 1, the sound-absorbing sponge ring 3 is used for absorbing noise inside the corrugated pipe body 1, the sealing layer 4 is a soft rubber layer, the exterior of the corrugated pipe is coated and sealed through the sealing layer 4, the possibility that the noise inside the corrugated pipe is transmitted is reduced, finally, the sound-absorbing sponge layer 5 is used for further absorbing noise, and finally, the noise reduction effect is achieved.

Referring to fig. 2, the one end of keeping away from bellows body 1 at every connecting pipe 11 all overlaps and is equipped with sealing member 6, and sealing member 6 includes first sealing ring 61, second sealing ring 62 and connecting portion 63, and first sealing ring 61 sets up with second sealing ring 62 is coaxial, and the diameter of first sealing ring 61 is greater than the diameter of second sealing ring 62, and connecting portion 63 is located the one end that bellows body 1 was kept away from to first sealing ring 61, second sealing ring 62 and connecting portion 63 three integrated into one piece.

Referring to fig. 1 and 2, an extension portion 611 is integrally formed at one end of each first sealing ring 61 close to the steel wire mesh sleeve 2, one end of the steel wire mesh sleeve 2 close to the extension portion 611 extends between the extension portion 611 and the connecting pipe 11, a clamp 8 is arranged outside the extension portion 611, the clamp 8 tightens the extension portion 611, so that the end portion of the steel wire mesh sleeve 2 is tightly clamped between the extension portion 611 and the connecting pipe 11, the working stability of the steel wire mesh sleeve 2 is improved, the sound-absorbing sponge ring 3 and the sealing layer 4 work more stably, and the noise reduction effect of the exhaust corrugated pipe is improved.

Referring to fig. 2, a plurality of fastening screws 612 are threadedly coupled to an outer wall of each first seal ring 61, the fastening screws 612 are distributed around the circumferential direction of the first seal ring 61, and the fastening screws 612 sequentially penetrate through the first seal ring 61 and the connection pipe 11 and then are threadedly coupled to the second seal ring 62. The fastening screw 612 is used for firmly connecting the sealing element 6 to the connecting pipe 11, so that the sealing element 6 is limited, and the possibility that the sealing element 6 is separated from the connecting pipe 11 is reduced.

Referring to fig. 2, a baffle ring 7 is fixedly disposed inside each connecting pipe 11, the baffle ring 7 is coaxially disposed with the connecting pipe 11, the baffle ring 7 abuts against one end of the second sealing ring 62, and the second sealing ring 62 is limited by the baffle ring 7. Set up guiding opening 71 in the one side of keeping off ring 7 and keeping away from second sealing ring 62, guiding opening 71 reduces to the direction of being close to second sealing ring 62 along keeping away from second sealing ring 62 gradually, and guiding opening 71 makes the junction transition of keeping off ring 7 and connecting pipe 11 inner wall smooth, plays the effect of direction to the flow of tail gas, reduces the inside noise of connecting pipe 11.

Referring to fig. 1 and 2, in order to facilitate connection between the connection pipe 11 and the exhaust pipe, a connection flange 631 is fixedly connected to one side of each connection portion 63 away from the first sealing ring 61, and the connection pipe 11 is connected to the exhaust pipe by using the connection flange 631, so as to implement installation of the exhaust bellows.

The implementation principle of the automobile exhaust corrugated pipe with the noise reduction function is as follows: set gradually in the outside of bellows body 1 and inhale sound sponge ring 3, sealing layer 4, inhale sound sponge layer 5 and steel wire netting cover 2, will inhale the shape complementation of sound sponge ring 3 and 1 fold portion of bellows body, utilize and inhale the sound sponge ring 3 and absorb the noise of 1 inside of bellows body, then carry out the cladding through sealing layer 4 to the outside of bellows and seal, utilize at last to inhale the further noise absorption of sound sponge layer 5, reduce the possibility that the internal noise of bellows spreads.

Utilize sealing member 6 cover to establish the tip at connecting pipe 11, extension 611 compresses tightly sealed to the both ends of wire mesh cover 2, makes wire mesh cover 2 difficult the removal, promotes to inhale the stability of sound sponge ring 3 and sealing layer 4 work.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automobile exhaust bellows with noise reduction function, includes bellows body (1) and cover and establish at outside steel wire netting cover (2) of bellows body (1), the equal integrated into one piece in both ends of bellows body (1) has connecting pipe (11), its characterized in that: the outside of bellows body (1) sets up a plurality of sound sponge rings of inhaling (3), inhale the shape complementation of sound sponge ring (3) and bellows body (1) fold portion, set up sealing layer (4) between bellows body (1) and wire netting cover (2).

2. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 1, wherein: the one end that bellows body (1) was kept away from in connecting pipe (11) all overlaps and is equipped with sealing member (6), sealing member (6) are including first sealing ring (61) and second sealing ring (62) of coaxial setting, bellows body (1) was kept away from in first sealing ring (61) and second sealing ring (62) one end is passed through connecting portion (63) and is connected, one side that first sealing ring (61) is close to wire netting cover (2) sets up extension (611), wire netting cover (2) are close to the one end of extension (611) and extend to between extension (611) and connecting pipe (11).

3. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 2, wherein: the connecting pipe (11) is internally and fixedly provided with a baffle ring (7), and the baffle ring (7) is abutted against one end of the second sealing ring (62).

4. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 3, wherein: one side of the baffle ring (7) far away from the second sealing ring (62) is provided with a guide opening (71), and the guide opening (71) is gradually reduced along the direction of far away from the second sealing ring (62) to be close to the second sealing ring (62).

5. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 2, wherein: a clamping hoop (8) is arranged outside the extension part (611), and the clamping hoop (8) is used for clamping the extension part (611).

6. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 2, wherein: the first sealing ring (61) is provided with a plurality of fastening screws (612), and the fastening screws (612) penetrate through the first sealing ring (61) and the connecting pipe (11) and are in threaded connection with the second sealing ring (62).

7. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 2, wherein: and a connecting flange plate (631) is arranged on one side of the connecting part (63) far away from the first sealing ring (61).

8. The corrugated pipe for vehicle exhaust with noise reduction function according to claim 1, wherein: and a sound absorption sponge layer (5) is arranged between the steel wire mesh sleeve (2) and the sealing layer (4).