A heat-insulating and shock-resistant muffler

Abstract

The utility model discloses a heat-insulating and anti-vibration muffler, comprising a cylinder assembly and an intake pipe assembly, wherein the intake pipe assembly comprises a front intake pipe group and a rear intake pipe group connected in sequence; the front intake pipe group comprises a front intake inner pipe and a front intake outer pipe, and a first shock-absorbing chamber is formed between the front intake inner pipe and the front intake outer pipe at a position other than the two ends; the rear intake pipe group comprises a rear intake inner pipe and a rear intake outer pipe, and a second shock-absorbing chamber is formed between the rear intake inner pipe and the rear intake outer pipe at a position other than the two ends, and one end of the rear intake inner pipe is connected to a part of the front intake outer pipe located in the first shock-absorbing chamber; the cylinder assembly comprises an outer cylinder, and the outer cylinder comprises an outer cylinder outer wall and an outer cylinder inner wall, and a heat-insulating chamber is formed between the outer cylinder outer wall and the outer cylinder inner wall, and the outer cylinder is connected to the outer side of one end of the rear intake outer pipe away from the front intake pipe group. The utility model has stable and reliable connection, reduces the vibration caused by engine operation, motorcycle driving and strong airflow, and improves heat insulation and noise reduction performance.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle mufflers, in particular to a heat-insulating and shock-resistant muffler. Background Art

[0002] Due to the limitation of the structure setting, the existing motorcycle muffler will cause the vibration of the engine and the motorcycle during driving and the strong airflow will cause the muffler to shake severely, which will affect the stability of the internal structure of the muffler over time, and even cause damage to the muffler;

[0003] In addition, in order to make the muffler have a good heat insulation effect, a heat insulation board is set on the outside of the cylinder assembly. Although it has a good heat insulation effect, it increases the production cost and processing difficulty, and affects the integrity of the product.

[0004] Therefore, in order to solve the above problems, it is necessary to develop a heat-insulating and shock-resistant muffler to reduce the vibration caused by engine operation, motorcycle driving and strong airflow, improve the heat insulation and noise reduction performance, and ensure stable and reliable connection. Utility Model Content

[0005] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0006] A heat-insulating and anti-vibration muffler comprises a barrel assembly and an air intake pipe assembly, wherein the air intake pipe assembly comprises a front air intake pipe group and a rear air intake pipe group connected in sequence;

[0007] The front air intake pipe group includes a front air intake inner pipe and a front air intake outer pipe, and a first damping chamber is formed at a position other than the two ends between the front air intake inner pipe and the front air intake outer pipe;

[0008] The rear air intake pipe group includes a rear air intake inner pipe and a rear air intake outer pipe, a second damping chamber is formed between the rear air intake inner pipe and the rear air intake outer pipe at a position other than the two ends, and one end of the rear air intake inner pipe is connected to a portion of the front air intake outer pipe located in the first damping chamber;

[0009] The cylinder assembly includes an outer cylinder, which includes an outer cylinder outer wall and an outer cylinder inner wall, and a heat-insulating chamber is formed between the outer cylinder outer wall and the inner cylinder inner wall. The outer cylinder is connected to the outer side of one end of the rear intake outer pipe away from the front intake pipe group.

[0010] Preferably, two ends of the front air intake outer pipe are press-fitted with two ends of the front air intake inner pipe, and two ends of the rear air intake outer pipe are press-fitted with two ends of the rear air intake outer pipe.

[0011] Preferably, the cylinder assembly also includes an inner cylinder coaxially arranged in the inner cavity of the outer cylinder, and the end of the rear air intake inner pipe is tightly fitted and connected with the end of the rear air intake outer pipe and then extends to the inner cavity of the outer cylinder to connect with the inner cylinder, and the other end of the inner cylinder is connected to the outer cylinder through a tail cover, and an exhaust pipe is arranged on the tail cover.

[0012] Preferably, a pressure relief chamber is formed between the inner cylinder and the inner wall of the outer cylinder, the tail cover and the rear air intake outer pipe, and pressure relief holes are provided in the parts of the rear air intake inner pipe and the rear air intake outer pipe located in the pressure relief chamber.

[0013] Preferably, a silencer assembly is provided in the inner cylinder, and the silencer assembly includes a first silencer pipe, a second silencer pipe, a first partition plate, and a second partition plate.

[0014] Preferably, the first partition and the second partition divide the inner cavity of the inner cylinder into a first silencer chamber, a second silencer chamber and a third silencer chamber which are independent of each other along the exhaust direction; the first silencer pipe connects the first silencer chamber and the third silencer chamber; the second silencer pipe connects the second silencer chamber and the third silencer chamber; the end of the exhaust pipe away from the tail cover passes through the second partition and extends to the second silencer chamber.

[0015] Preferably, the first silencer pipe, the second silencer pipe and the exhaust pipe are arranged in a staggered distribution.

[0016] Preferably, the inner cylinder is provided with a second through hole communicating with the pressure relief chamber at a position located in the third silencing chamber.

[0017] Preferably, the outer cylinder and the inner cylinder are conical structures that gradually increase in size from the air intake end to the air discharge end.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The front intake pipe group, the rear intake pipe group and the outer cylinder of the utility model adopt a double-wall hollow structure, so that the intake pipe assembly forms a first shock-absorbing chamber, a second shock-absorbing chamber and a heat-insulating chamber in sequence in the direction of the cylinder assembly. The two-stage shock-absorbing chamber and the heat-insulating chamber gradually absorb and offset the vibrations generated by the operation of the engine, the driving of the motorcycle and the strong airflow, thereby achieving a good anti-vibration effect; at the same time, the double-wall hollow structure enables the intake pipe assembly and the cylinder assembly to have better heat insulation and noise reduction performance.

[0020] 2. By pressing and connecting the two ends of the front intake outer pipe with the two ends of the front intake inner pipe, pressing and connecting the two ends of the rear intake outer pipe with the two ends of the rear intake outer pipe, and tightly fitting and connecting the end of the rear intake inner pipe with the end of the rear intake outer pipe, and then extending to the inner cavity of the outer cylinder to connect with the inner cylinder, the connection strength and stability of the rear intake pipe group with the front intake pipe group and the cylinder assembly are improved, and the shaking of the connection during the driving of the motorcycle is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 2 It is an explosion diagram of the utility model;

[0023] Among them: front intake pipe group 1, rear intake pipe group 2, outer cylinder 3, heat insulation chamber 4, inner cylinder 5, tail cover 6, exhaust pipe 7, silencer assembly 8, first damping chamber 10, second damping chamber 20, pressure relief chamber 30, front intake inner pipe 11, front intake outer pipe 12, rear intake inner pipe 21, rear intake outer pipe 22,

[0024] The outer wall 31 of the outer cylinder, the inner wall 32 of the outer cylinder, the first silencer pipe 81, the second silencer pipe 82, the first partition plate 83, the second partition plate 84, the first silencer chamber 100, the second silencer chamber 200, the third silencer chamber 300, the second through hole 5a, and the pressure relief hole 30a. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0029] like Figure 1 , 2As shown, a heat-insulating and anti-vibration muffler includes a barrel assembly and an intake pipe assembly, wherein the intake pipe assembly includes a front intake pipe group 1 and a rear intake pipe group 2 connected in sequence;

[0030] The front air intake pipe group 1 includes a front air intake inner pipe 11 and a front air intake outer pipe 12, and a first damping chamber 10 is formed at a position other than the two ends of the front air intake inner pipe 11 and the front air intake outer pipe 12;

[0031] The rear intake pipe group 2 includes a rear intake inner pipe 21 and a rear intake outer pipe 22. A second damping chamber 20 is formed between the rear intake inner pipe 21 and the rear intake outer pipe 22 at positions other than the two ends. One end of the rear intake inner pipe 21 is connected to a portion of the front intake outer pipe 12 located in the first damping chamber 10.

[0032] The cylinder assembly includes an outer cylinder 3, which includes an outer cylinder outer wall 31 and an outer cylinder inner wall 32, and a heat-insulating chamber 4 is formed between the outer cylinder outer wall 31 and the outer cylinder inner wall 32. The outer cylinder 3 is connected to the outer side of one end of the rear intake outer pipe 22 away from the front intake pipe group 1.

[0033] In this embodiment, the front intake pipe group 1, the rear intake pipe group 2 and the outer cylinder 3 adopt a double-wall hollow structure, so that the intake pipe assembly forms a first shock-absorbing chamber 10, a second shock-absorbing chamber 20 and a heat-insulating chamber 4 in the direction of the cylinder assembly in sequence, and the two-stage shock-absorbing chamber and the heat-insulating chamber 4 gradually absorb and offset the vibrations generated by the operation of the engine, the driving of the motorcycle and the strong airflow, thereby achieving a good anti-vibration effect; at the same time, the double-wall hollow structure makes the intake pipe assembly and the cylinder assembly have better heat insulation and noise reduction performance.

[0034] In this embodiment, by connecting one end of the rear intake inner pipe 21 to the front intake outer pipe 12 at the position of the first shock absorbing chamber 10, the vibration of the front intake pipe group 1 can be reduced from being directly transmitted to the rear intake pipe group 2, thereby playing an effective shock absorbing role.

[0035] The above structure reduces the vibration caused by engine operation, motorcycle driving and strong airflow, and improves heat insulation and noise reduction performance.

[0036] Further, such as Figure 1 , 2 As shown, in order to improve the connection strength between the front intake pipe group 1 and the rear intake pipe group 2, reduce the shaking of the connection during the driving of the motorcycle, and improve the stability and reliability of the connection; the two ends of the front intake outer pipe 12 are press-fitted with the two ends of the front intake inner pipe 11, and the two ends of the rear intake outer pipe 22 are press-fitted with the two ends of the rear intake outer pipe 22.

[0037] Further, such as Figure 1 , 2As shown, in order to improve the connection strength between the rear intake pipe group 2 and the cylinder assembly and reduce the shaking of the connection during the driving process of the motorcycle; the cylinder assembly also includes an inner cylinder 5 coaxially arranged in the inner cavity of the outer cylinder 3, and the end of the rear intake inner pipe 21 is tightly fitted and connected with the end of the rear intake outer pipe 22 and then extends to the inner cavity of the outer cylinder 3 to be connected with the inner cylinder 5. The other end of the inner cylinder 5 is connected to the outer cylinder 3 through a tail cover 6, and the tail cover 6 is provided with an exhaust pipe 7.

[0038] Further, such as Figure 1 , 2 As shown, in order to increase the sound reduction amount at the air intake end of the muffler and improve the noise reduction effect; a pressure relief chamber 30 is formed between the inner cylinder 5 and the inner wall 32 of the outer cylinder, the tail cover 6 and the rear air intake outer pipe 22, and a pressure relief hole 30a is provided in the part of the rear air intake inner pipe 21 and the rear air intake outer pipe 22 located in the pressure relief chamber 30; the sound energy of the exhaust gas entering the rear air intake pipe group 2 is transmitted and lost in the pressure relief chamber 30.

[0039] Further, such as Figure 1 , 2 As shown, in order to improve the sound-absorbing effect, a sound-absorbing component 8 is arranged in the inner cylinder 5, and the sound-absorbing component 8 includes a first sound-absorbing pipe 81, a second sound-absorbing pipe 82, a first partition plate 83 and a second partition plate 84.

[0040] Further, such as Figure 1 , 2 As shown, the first partition 83 and the second partition 84 divide the inner cavity of the inner cylinder 5 into a first silencer chamber 100, a second silencer chamber 200 and a third silencer chamber 300 which are independent of each other along the exhaust direction, the first silencer pipe 81 connects the first silencer chamber 100 with the third silencer chamber 300, the second silencer pipe 82 connects the second silencer chamber 200 with the third silencer chamber 300, and the end of the exhaust pipe 7 away from the tail cover 6 passes through the second partition 84 and then extends to the second silencer chamber 200.

[0041] In this embodiment, through the combined design of the silencer assembly 8 and the pressure relief chamber 30, only the silencer assembly 8 with a two-stage silencer structure needs to be set up to achieve the silencer effect of a multi-stage silencer structure, thereby improving the heat insulation and shock absorption effects while ensuring the exhaust silencer effect.

[0042] Further, such as Figure 1 , 2 As shown, in order to form a barrier transmission of exhaust gas in the first silencer chamber 100, the second silencer chamber 200 and the third silencer chamber 300, the sound energy in the exhaust gas is lost, and the exhaust silencer effect is improved; the first silencer pipe 81, the second silencer pipe 82 and the exhaust pipe 7 are staggered and distributed.

[0043] Further, such as Figure 1 , 2 As shown, in order to allow the exhaust gas from the pressure relief chamber to enter the silencer chamber for treatment and then be discharged, thereby reducing exhaust resistance and improving exhaust efficiency; the inner cylinder 5 is located at the position of the third silencer chamber 300 and is provided with a second through hole 5a connected to the pressure relief chamber 30.

[0044] Further, such as Figure 1 , 2 As shown, in order to achieve pressure relief, reduce exhaust resistance, and improve sound energy transfer loss, the outer cylinder 3 and the inner cylinder 5 are conical structures that gradually increase in size from the air intake end to the exhaust end.

[0045] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the utility model patent.

Claims

1. A heat-insulating and anti-vibration muffler, comprising a cylinder assembly and an air intake pipe assembly, characterized in that: The air intake pipe assembly comprises a front air intake pipe group and a rear air intake pipe group connected in sequence; The front air intake pipe group includes a front air intake inner pipe and a front air intake outer pipe, and a first damping chamber is formed at a position other than the two ends between the front air intake inner pipe and the front air intake outer pipe; The rear air intake pipe group includes a rear air intake inner pipe and a rear air intake outer pipe, a second damping chamber is formed between the rear air intake inner pipe and the rear air intake outer pipe at a position other than the two ends, and one end of the rear air intake inner pipe is connected to a portion of the front air intake outer pipe located in the first damping chamber; The cylinder assembly includes an outer cylinder, which includes an outer cylinder outer wall and an outer cylinder inner wall, and a heat-insulating chamber is formed between the outer cylinder outer wall and the inner cylinder inner wall. The outer cylinder is connected to the outer side of one end of the rear intake outer pipe away from the front intake pipe group.

2. A heat-insulating and anti-vibration muffler according to claim 1, characterized in that: The two ends of the front air intake outer pipe are press-fitted and connected to the two ends of the front air intake inner pipe, and the two ends of the rear air intake outer pipe are press-fitted and connected to the two ends of the rear air intake outer pipe.

3. The heat-insulating and anti-vibration muffler according to claim 1, characterized in that: The cylinder assembly also includes an inner cylinder coaxially arranged in the inner cavity of the outer cylinder. The end of the rear air intake inner pipe is tightly fitted and connected with the end of the rear air intake outer pipe and then extends to the inner cavity of the outer cylinder to connect with the inner cylinder. The other end of the inner cylinder is connected to the outer cylinder through a tail cover, and an exhaust pipe is arranged on the tail cover.

4. A heat-insulating and anti-vibration muffler according to claim 3, characterized in that: A pressure relief chamber is formed between the inner cylinder and the inner wall of the outer cylinder, the tail cover and the rear air intake outer pipe, and pressure relief holes are provided in the parts of the rear air intake inner pipe and the rear air intake outer pipe located in the pressure relief chamber.

5. The heat-insulating and anti-vibration muffler according to claim 3, characterized in that: The inner cylinder is provided with a silencer assembly, which includes a first silencer pipe, a second silencer pipe, a first baffle and a second baffle.

6. A heat-insulating and anti-vibration muffler according to claim 5, characterized in that: The first partition and the second partition divide the inner cavity of the inner cylinder into a first silencer chamber, a second silencer chamber and a third silencer chamber which are independent of each other along the exhaust direction; the first silencer pipe connects the first silencer chamber and the third silencer chamber; the second silencer pipe connects the second silencer chamber and the third silencer chamber; the end of the exhaust pipe away from the tail cover passes through the second partition and extends to the second silencer chamber.

7. The heat-insulating and anti-vibration muffler according to claim 6, characterized in that: The first silencer pipe, the second silencer pipe and the exhaust pipe are arranged in a staggered distribution.

8. The heat-insulating and anti-vibration muffler according to claim 6, characterized in that: The inner cylinder is provided with a second through hole in communication with the pressure relief chamber at a position located in the third silencing chamber.

9. The heat-insulating and anti-vibration muffler according to claim 3, characterized in that: The outer cylinder and the inner cylinder are conical structures that gradually increase in size from the air intake end to the exhaust end.

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