CN219034841U

CN219034841U - Muffler with turn-back silencing structure

Info

Publication number: CN219034841U
Application number: CN202223089326.5U
Authority: CN
Inventors: 梁俊宏
Original assignee: Zhaoqing City Gaoyao District Kangcheng Hardware Co ltd
Current assignee: Zhaoqing City Gaoyao District Kangcheng Hardware Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-16
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a muffler with a turn-back silencing structure, which comprises a muffler body, wherein the muffler body comprises an outer cylinder body, an exhaust pipe and a tail pipe group; a silencing structure is arranged in the outer cylinder; the silencing structure extends from one end of the outer cylinder to the other end; the tail pipe group is detachably connected with the silencing structure; the silencing structure comprises an inner cylinder body, a left baffle plate, a right baffle plate, a first silencing pipe and a second silencing pipe which are coaxially arranged. According to the utility model, the first cone-shaped silencing pipe is arranged in the silencing structure, so that the first cavity and the second cavity with gradually reduced space are formed in the silencing structure, most of sound energy is impacted and lost in the first cavity and the second cavity, and a good exhaust noise reduction effect is achieved; meanwhile, a tail pipe group consisting of a tail pipe body and silencing cotton is detachably connected with a second silencing pipe, so that the silencing cotton is convenient and quick to replace, and the noise reduction effect of exhaust is ensured; the structure is stable and reliable, and is convenient for production and processing.

Description

Muffler with turn-back silencing structure

Technical Field

The utility model relates to the technical field of motorcycle silencers, in particular to a silencer with a turn-back silencing structure.

Background

The existing muffler is provided with a multi-stage silencing structure formed by a plurality of silencing pipes and a plurality of partition boards in the cylinder body, and the multi-stage silencing structure is distributed in the cylinder body in a scattered manner, so that the internal structure of the cylinder body becomes complex, the processing procedures are more, and the processing difficulty is high; and the built-in silencing cotton cannot be disassembled, so that the silencing performance of the silencing cotton can be reduced due to the influence of temperature, waste gas and the like after long-term use, and the exhaust noise reduction effect cannot be ensured.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide the muffler with the foldback noise reduction structure, which has good exhaust noise reduction effect, stable and reliable structure and is convenient for production and processing.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the muffler with the turn-back silencing structure comprises a muffler body, and is characterized in that the muffler body comprises an outer cylinder body, an exhaust pipe and a tail pipe group; a silencing structure is arranged in the outer cylinder; the silencing structure extends from one end of the outer cylinder to the other end; the outer cylinder body is connected with the exhaust pipe through a front cone; the tail pipe group is detachably connected with the silencing structure.

Preferably, the silencing structure comprises an inner cylinder body, a left baffle plate, a right baffle plate, a first silencing pipe and a second silencing pipe which are coaxially arranged;

the left baffle plate and the right baffle plate are respectively arranged at two ends of the inner cylinder body;

the first silencing pipe is cone-shaped; one end of the first silencing pipe with the smaller inner diameter is connected with the right partition plate, and one end with the larger inner diameter is connected with the left partition plate; the second silencing pipe is in a straight cylinder shape; the second silencing pipe is positioned in the first silencing pipe; one end of the second silencing pipe is connected with the right partition plate, and the other end of the second silencing pipe is connected with the left partition plate; the left partition plate is provided with a connecting hole at a position corresponding to the second silencing pipe;

the right partition plate is positioned between the first silencing pipe and the inner cylinder body and provided with a plurality of right first through holes; a plurality of second through holes are formed in the periphery of the outer side of one end, connected with the left partition plate, of the first silencing pipe; a plurality of third through holes are formed in the periphery of the outer side of one end, connected with the right partition plate, of the second silencing pipe;

the tail pipe group is arranged on the connecting hole.

Preferably, a first chamber is formed between the right partition plate, the inner cylinder body and the first silencing pipe; a second chamber is formed between the first silencing pipe, the second silencing pipe and the left partition plate;

the section of the first chamber gradually decreases from the right partition plate to the left partition plate; the cross section of the second chamber gradually decreases from the left partition plate to the right partition plate in the reverse direction.

Preferably, the tail pipe group comprises a tail pipe body and silencing cotton; the tail pipe body is detachably connected with the second silencing pipe;

the tail pipe body comprises a connecting section, a limiting section and a tail section; a tail cover is arranged between the connecting section and the tail section of the tail pipe body; the tail cover is provided with a plurality of exhaust holes; the silencing cotton is arranged in the connecting section;

and a limiting convex ring protruding out of the inner surface of the second silencing pipe is arranged at the joint of the second silencing pipe and the tail pipe body.

Preferably, the tail pipe body is in threaded connection with the second muffler pipe.

Preferably, a heat insulation chamber is formed between the outer cylinder and the inner cylinder.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the first cone-shaped silencing pipe is arranged in the silencing structure, so that the first cavity and the second cavity with gradually reduced space are formed in the silencing structure, most of sound energy is impacted and lost in the first cavity and the second cavity, and a good exhaust noise reduction effect is achieved; meanwhile, a tail pipe group consisting of a tail pipe body and silencing cotton is detachably connected with a second silencing pipe, so that the silencing cotton is convenient and quick to replace, and the noise reduction effect of exhaust is ensured; the structure is stable and reliable, and is convenient for production and processing.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a left side view of the present utility model;

FIG. 4 is a schematic view of the cross-sectional structure A-A of FIG. 2;

FIG. 5 is a schematic view of the cross-sectional structure B-B in FIG. 2;

FIG. 6 is an enlarged schematic view of a portion of FIG. 4 at C;

wherein: the muffler comprises a muffler body 1, an outer cylinder 2, an exhaust pipe 3, a tail pipe group 4, a front cone 5, a silencing structure 6, an exhaust hole 10, a tail pipe body 41, silencing cotton 42, an inner cylinder 61, a left partition plate 62, a right partition plate 63, a first silencing pipe 64, a second silencing pipe 65, a first chamber 100, a second chamber 200, a heat insulation chamber 300, a connecting section 411, a limiting section 412, a tail section 413, a tail cover 414, a connecting hole 621, a first through hole 631, a second through hole 641, a third through hole 651 and a limiting convex ring 652.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model will be further described with reference to the accompanying drawings and detailed description below:

as shown in fig. 1 to 6, a muffler with a fold-back silencing structure includes a muffler body 1, characterized in that the muffler body 1 includes an outer cylinder 2, an exhaust pipe 3, and a tailpipe group 4; a silencing structure 6 is arranged in the outer cylinder body 2; the silencing structure 6 extends from one end of the outer cylinder 2 to the other end; the outer cylinder body 2 is connected with the exhaust pipe 3 through a front cone 5; the tail pipe group 4 is detachably connected with the silencing structure 6.

In this embodiment, the exhaust gas enters the inside of the outer cylinder 2 from the exhaust pipe 3 via the front cone 5, and is then discharged from the tailpipe group 4 after being subjected to a silencing treatment by the silencing structure 6.

Further, as shown in fig. 4, the silencing structure 6 includes an inner cylinder 61, a left partition 62, a right partition 63, a first silencing pipe 64 and a second silencing pipe 65 coaxially arranged;

the left partition plate 62 and the right partition plate 63 are respectively arranged at two ends of the inner cylinder 61;

the first muffler pipe 64 has a tapered cylindrical shape; one end of the first silencing pipe 64 with a small inner diameter is connected with the right partition plate 63, and one end with a large inner diameter is connected with the left partition plate 62; the second muffler pipe 65 is straight; the second muffler pipe 65 is located inside the first muffler pipe 64; one end of the second silencing pipe 65 is connected with the right partition plate 63, and the other end of the second silencing pipe is connected with the left partition plate 62; a connecting hole 621 is formed in the left partition plate 62 at a position corresponding to the second muffler pipe 65;

the right partition 63 is positioned between the first silencing pipe 64 and the inner cylinder 61 and provided with a plurality of right first through holes 631; a plurality of second through holes 641 are formed around the outer periphery of one end of the first silencing tube 64 connected with the left partition plate 62; a plurality of third through holes 651 are formed around the outer side of one end of the second silencing pipe 65 connected with the right partition 63;

the tail pipe group 4 is disposed on the connection hole 621.

Further, as shown in fig. 4 and 5, a first chamber 100 is formed between the right partition 63 and the inner cylinder 61 and the first muffler pipe 64; a second chamber 200 is formed between the first muffler pipe 64 and the second muffler pipe 65 and the left partition plate 62;

the cross section of the first chamber 100 gradually decreases from the right partition 63 to the left partition 62; the cross-section of the second chamber 200 tapers from the left partition 62 to the right partition 63.

In this embodiment, the exhaust gas enters the first chamber 100 from the first through hole 631 after striking the right partition 63, and part of the acoustic energy is lost, so that the primary silencing is realized; then, the sound energy enters the second chamber 200 from the first chamber 100 through the second through holes 641, most of the sound energy is blocked in the first chamber 100 in the process, and the intercepted part of the sound energy is subjected to multi-angle impact loss in the first chamber 100, so that the secondary silencing is realized; and then enters the second silencing pipe 65 from the second chamber 200 through the third through hole 651, most of sound energy is blocked in the second chamber 200 in the process, and the intercepted part of sound energy is subjected to multi-angle impact loss in the second chamber 200, so that three-stage silencing is realized, and the sound energy in the waste gas is gradually lost.

In this embodiment, the exhaust gas is made to enter the first chamber 100 and the second chamber 200 with gradually reduced space to form a turn-back noise reduction, so that most of the sound energy is blocked in the first chamber 100 and the second chamber 200 in sequence, and the intercepted sound energy is subjected to multi-angle impact loss in the first chamber 100 and the second chamber 200, so that a good exhaust noise reduction effect is achieved, and compared with the existing complex noise reduction structure 6, the device has the characteristics of simple structure, convenience in production and processing, and stable and reliable quality.

Further, as shown in fig. 6, the tailpipe group 4 includes a tailpipe body 41 and a noise-deadening cotton 42; the tail pipe body 41 is detachably connected with the second silencing pipe 65;

the tail pipe body 41 comprises a connecting section 411, a limiting section 412 and a tail section 413; a tail cover 414 is arranged between the connecting section 411 and the tail section 413 of the tail pipe body 41; the tail cover 414 is provided with a plurality of exhaust holes 10; the silencing cotton 42 is arranged in the connecting section 411;

a limiting convex ring 652 protruding out of the inner surface of the second silencing pipe 65 is arranged at the joint of the second silencing pipe 65 and the tail pipe body 41.

In this embodiment, the tail pipe body 41 is detachably connected with the second silencing pipe 65, and the silencing cotton 42 is arranged in the connecting section 411 of the tail pipe body 41, when the silencing cotton 42 needs to be replaced, the whole tail pipe set 4 is detached from the second silencing pipe 65, and then the silencing cotton 42 is removed and replaced and reinstalled; the disassembly and assembly process is convenient and quick without using additional tools, thereby ensuring the exhaust noise reduction effect.

Further, the tail pipe body 41 is in threaded connection with the second muffler pipe 65; adopt threaded connection, easy dismounting connects reliable and stable.

Further, as shown in fig. 4 and 5, an insulating chamber 300 is formed between the outer cylinder 2 and the inner cylinder 61.

In this embodiment, the heat-insulating chamber 300 not only can play a role of heat insulation and scalding prevention, but also can effectively block the noise in the silencing structure 6 from being transmitted outwards, thereby further improving the exhaust noise reduction effect.

It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.

Claims

1. The muffler with the turn-back silencing structure comprises a muffler body, and is characterized in that the muffler body comprises an outer cylinder body, an exhaust pipe and a tail pipe group; a silencing structure is arranged in the outer cylinder; the silencing structure extends from one end of the outer cylinder to the other end; the outer cylinder body is connected with the exhaust pipe through a front cone; the tail pipe group is detachably connected with the silencing structure.

2. The muffler with a fold-back sound deadening structure according to claim 1, wherein the sound deadening structure includes an inner cylinder, a left partition, a right partition, a first sound deadening pipe, and a second sound deadening pipe that are coaxially arranged;

the tail pipe group is arranged on the connecting hole.

3. The muffler with a fold-back sound deadening structure according to claim 2, wherein a first chamber is formed between the right partition plate and the inner cylinder and the first sound deadening pipe; a second chamber is formed between the first silencing pipe, the second silencing pipe and the left partition plate;

4. The muffler with a turn-back sound deadening structure according to claim 1, wherein the tail pipe group includes a tail pipe body and sound deadening cotton; the tail pipe body is detachably connected with the second silencing pipe;

5. The muffler with a fold-back sound deadening structure according to claim 4, wherein the tail pipe body is screwed with the second sound deadening pipe.

6. A muffler having a fold-back sound deadening structure according to claim 1, wherein a heat insulating chamber is formed between the outer cylinder and the inner cylinder.