Low-noise motorcycle silencer

Abstract

The utility model belongs to the technical field of motorcycle mufflers, and particularly relates to a low-noise motorcycle muffler which comprises a muffling shell, a muffling sleeve and a tail cover, an air inlet pipe is fixedly installed in the muffling shell, and a reinforcing plate is fixedly installed between the air inlet pipe and the muffling shell. According to the exhaust silencer, the hoop is matched with the bolt, so that a worker can conveniently disassemble and assemble the silencing sleeve and the sound insulation cotton, the sound insulation cotton and the silencing sleeve can be maintained and replaced after long-time use, exhaust enters the silencing shell through the air inlet pipe, the sound insulation cotton and the silencing sleeve are used for silencing noise generated by the exhaust, and the noise generated by the exhaust is reduced. The noise generated by the tail gas firstly passes through the sound insulation cotton to counteract a part of sound waves, and the remaining sound waves flow into the noise elimination sleeve after being diffused, so that the noise generated by the tail gas at the outlet of the tail cover is reduced, the noise elimination effect and noise elimination performance of the tail gas are improved, and noise pollution caused by a motorcycle can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of motorcycle mufflers, and particularly relates to a low-noise motorcycle muffler. Background Art

[0002] A motorcycle muffler is a device that allows air flow through and attenuates noise; a silencer refers to an air flow pipeline with noise propagation, and noise reduction devices such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other acoustic impedance discontinuities can be used to attenuate or reflect back the noise in the pipeline. The performance of the muffler not only affects the noise of the motorcycle, but also has a greater impact on the performance of the engine, such as power, fuel consumption, torque, etc. The muffler structure of the prior art only relies on a cavity, and the single-structured muffler core cannot completely absorb and eliminate the noise of the motorcycle, resulting in poor noise reduction ability. Content of the Utility Model

[0003] The purpose of the utility model is to provide a low-noise motorcycle muffler, which can at least solve the problems existing in the prior art mentioned above.

[0004] To achieve the above purpose, a low-noise motorcycle muffler provided by an embodiment of the utility model includes a sound insulation housing, a sound attenuation sleeve and a tail cover. An air inlet pipe is fixedly installed inside the sound insulation housing. A reinforcing plate is fixedly installed between the air inlet pipe and the sound insulation housing. Sound insulation cotton is arranged between adjacent reinforcing plates. A first connection frame is fixedly installed on the end face of the sound insulation housing. A fixing plate is fixedly installed on the surface of the sound attenuation sleeve. A second connection frame is fixedly installed on the end face of the tail cover. A clamp is sleeved on the surfaces of the first connection frame and the second connection frame, and the clamp is fixedly connected by bolts.

[0005] Optionally, the reinforcing plates are circumferentially distributed inside the sound insulation housing.

[0006] Optionally, positioning holes are formed on the surface of the first connection frame, positioning columns are fixedly installed on the surface of the second connection frame, and through holes are formed on the surface of the fixing plate.

[0007] Optionally, an embedding groove is formed on the bottom surface of the fixing plate, and the reinforcing plate extends from the inside of the sound insulation housing to the inside of the embedding groove.

[0008] Optionally, the number of the positioning columns is four groups, and the four groups of positioning columns are symmetrically distributed on the surface of the second connection frame.

[0009] Optionally, external threads are arranged on the surface of the tail cover, a rotary cover is threadedly connected to the surface of the external threads, and a filter screen is arranged between the tail cover and the rotary cover.

[0010] Optionally, the surface of the screw cap is provided with anti-slip threads.

[0011] One or more of the above technical solutions in the low-noise motorcycle muffler provided by the embodiments of the present invention have at least one of the following technical effects:

[0012] 1. In the present invention, by providing a reinforcing plate, a sound insulation cotton, a sound-absorbing sleeve, a fixing plate, a first connecting frame, a second connecting frame, a clamp and a bolt structure, it is convenient for personnel to disassemble and assemble the sound-absorbing sleeve and the sound insulation cotton, so that the sound insulation cotton and the sound-absorbing sleeve can be maintained and replaced during long-term use. The exhaust gas enters the inside of the muffler housing through the intake pipe, and the sound insulation cotton and the sound-absorbing sleeve absorb the noise generated by the exhaust gas, and then are discharged from the tail cover outlet. The noise generated by the exhaust gas is first offset by the sound insulation cotton to cancel part of the sound waves, and the remaining sound waves are diverged and flow into the sound-absorbing sleeve, thereby reducing the noise generated by the exhaust gas at the tail cover outlet, improving the sound absorption effect and sound absorption performance of the exhaust gas, and reducing the noise pollution caused by the motorcycle.

[0013] 2. In the present invention, by providing an external thread, a filter screen and a screw cap structure, by installing a filter screen at the tail cover outlet, it can effectively prevent dust and foreign objects from entering the inside of the muffler, protect the internal structure from damage, and rotating the screw cap can facilitate personnel to disassemble and assemble the screw cap, so that personnel can clean and replace the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the low-noise motorcycle muffler proposed by the present invention;

[0016] Figure 2 It is an exploded view of the low-noise motorcycle muffler proposed by the present invention;

[0017] Figure 3 It is a schematic diagram of the muffler housing of the low-noise motorcycle muffler proposed by the present invention;

[0018] Figure 4 It is a schematic diagram of the sound-absorbing sleeve of the low-noise motorcycle muffler proposed by the present invention;

[0019] Figure 5 It is a schematic diagram of the tail cover of the low-noise motorcycle muffler proposed by the present invention.

[0020] Among them, the reference numerals in the figures are as follows:

[0021] 1—Soundproof housing, 2—Intake pipe, 3—First connecting frame

[0022] 4—Positioning hole, 5—Reinforcing plate, 6—Sound insulation cotton

[0023] 7—Sound absorption sleeve, 8—Fixing plate, 9—Perforation

[0024] 10—Insertion groove, 11—Tail cover, 12—Second connecting frame

[0025] 13—Positioning post, 14—Clamp, 15—Bolt

[0026] 16—External thread, 17—Filter screen, 18—Screw cap. Specific embodiments

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The following is by referring to the attached Figures 1-5 The described embodiments are exemplary and are intended to explain the embodiments of the present invention, and should not be construed as a limitation of the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0030] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0031] In one embodiment of the present utility model, as Figures 1-5 shown, a low-noise motorcycle muffler is provided, which includes a muffler housing 1, a muffler sleeve 7, and a tail cover 11. An air inlet pipe 2 is fixedly installed inside the muffler housing 1. A reinforcing plate 5 is fixedly installed between the air inlet pipe 2 and the muffler housing 1. Sound insulation cotton 6 is arranged between adjacent reinforcing plates 5. A first connection frame 3 is fixedly installed on the end face of the muffler housing 1. A fixing plate 8 is fixedly installed on the surface of the muffler sleeve 7. A second connection frame 12 is fixedly installed on the end face of the tail cover 11. A clamp 14 is sleeved on the surfaces of the first connection frame 3 and the second connection frame 12, and the clamp 14 is fixedly connected by bolts 15.

[0032] Furthermore, the reinforcing plates 5 are circumferentially distributed inside the muffler housing 1.

[0033] In this embodiment, the circumferential distribution of the reinforcing plates 5 enhances the overall stability and anti-deformation ability of the muffler housing 1, helps to resist vibration and impact during the operation of the motorcycle, and also helps to evenly disperse the sound waves entering the muffler, thereby more effectively reducing noise.

[0034] Furthermore, positioning holes 4 are provided on the surface of the first connection frame 3, positioning posts 13 are fixedly installed on the surface of the second connection frame 12, and perforations 9 are provided on the surface of the fixing plate 8.

[0035] In this embodiment, the insertion fit between the positioning holes 4 and the positioning posts 13 ensures the precise alignment between the components of the muffler, facilitates quick and accurate assembly, reduces installation errors, reduces part wear caused by improper assembly, and extends the service life of the muffler.

[0036] Furthermore, a groove 10 is provided on the bottom surface of the fixing plate 8, and the reinforcing plate 5 extends from inside the muffler housing 1 to inside the groove 10.

[0037] In this embodiment, the fixing plate 8 and the reinforcing plate 5 are connected through the groove 10, enhancing the structural connection between these two parts, improving the overall mechanical strength and durability, reducing vibration during operation, and further reducing noise.

[0038] Further, the number of positioning posts 13 is four groups, and the four groups of positioning posts 13 are symmetrically distributed on the surface of the second connecting frame 12.

[0039] In this embodiment, the four groups of symmetrically distributed positioning posts 13 not only improve the overall structural stability, but also ensure balance during the assembly process, which helps to maintain the correct positions between components.

[0040] Further, an external thread 16 is provided on the surface of the tail cover 11, a screw cap 18 is threadedly connected to the surface of the external thread 16, and a filter net 17 is provided between the tail cover 11 and the screw cap 18.

[0041] In this embodiment, the setting of the filter net 17 can effectively prevent dust and foreign objects from entering the interior of the muffler, protecting the internal structure from damage. The cooperation of the external thread 16 and the screw cap 18 makes the rear end of the muffler easy to disassemble, facilitating cleaning and replacing the filter net 17.

[0042] Further, anti-slip lines are provided on the surface of the screw cap 18.

[0043] In this embodiment, the setting of the anti-slip lines improves the hand feeling and operability of the screw cap 18, enabling the screw cap 18 to be easily rotated even in wet or gloved situations.

[0044] Working principle: By providing a reinforcing plate 5 between the muffling outer shell 1 and the air inlet pipe 2, the overall anti-deformation ability of the muffler can be improved. At the same time, the reinforcing plate 5 evenly divides the gap between the muffling outer shell 1 and the air inlet pipe 2 into multiple cavities, and sound insulation cotton 6 is provided inside the cavities. During use, the muffling sleeve 7 is inserted into the hole of the air inlet pipe 2, making the fixing plate 8 fit with the first connecting frame 3. During this process, the perforation 9 is aligned with the positioning hole 4, and at the same time, the groove 10 is aligned with the end face of the reinforcing plate 5. Subsequently, the fixing plate 8 is pressed to make the fixing plate 8 adhere to the first connecting frame 3, and the reinforcing plate 5 is inserted into the groove 10. Then, the tail cover 11 is assembled with the muffling outer shell 1, such that the positioning posts 13 on the second connecting frame 12 pass through the perforation 9 and are inserted into the positioning hole 4. Subsequently, the clamp 14 is installed on the first connecting frame 3 and the second connecting frame 12 and fixedly connected by bolts 15, thereby making the tail cover 11 and the muffling outer shell 1 into a whole. The exhaust gas enters the interior of the muffling outer shell 1 through the air inlet pipe 2, and the sound insulation cotton 6 and the muffling sleeve eliminate the noise generated by the exhaust gas. Then, it is discharged from the outlet position of the tail cover 11. The noise generated by the exhaust gas first passes through the sound insulation cotton 6 to cancel a part of the sound waves, and the remaining sound waves diverge and flow into the muffling sleeve 7, thereby reducing the noise generated by the exhaust gas at the outlet of the tail cover 11, improving the muffling effect and performance of the exhaust gas, and achieving the reduction of noise pollution caused by motorcycles. By installing a filter net 17 at the outlet of the tail cover 11, dust and foreign objects can be effectively prevented from entering the interior of the muffler, protecting the internal structure from damage, and at the same time facilitating the cleaning and replacement of the filter net 17.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A low-noise motorcycle muffler, comprising a muffler housing (1), a muffler sleeve (7) and a tail cover (11), characterized in that: An air intake pipe (2) is fixedly installed inside the silencer housing (1), a reinforcing plate (5) is fixedly installed between the air intake pipe (2) and the silencer housing (1), and sound insulation cotton (6) is arranged between adjacent reinforcing plates (5). A first connecting frame (3) is fixedly installed on the end surface of the silencer housing (1), a fixing plate (8) is fixedly installed on the surface of the silencer sleeve (7), and a second connecting frame (12) is fixedly installed on the end surface of the tail cover (11). The surfaces of the first connecting frame (3) and the second connecting frame (12) are sleeved with clamps (14), and the clamps (14) are fixedly connected by bolts (15).

2. The low noise motorcycle muffler according to claim 1, characterized in that: The reinforcing plates (5) are distributed in a circumferential manner inside the sound-absorbing shell (1).

3. The low noise motorcycle muffler according to claim 1, characterized in that: A positioning hole (4) is provided on the surface of the first connection frame (3), a positioning column (13) is fixedly mounted on the surface of the second connection frame (12), and a through hole (9) is provided on the surface of the fixing plate (8).

4. The low noise motorcycle muffler according to claim 1, characterized in that: The bottom surface of the fixing plate (8) is provided with an embedding groove (10), and the reinforcing plate (5) extends from the inside of the sound-absorbing shell (1) to the inside of the embedding groove (10).

5. The low noise motorcycle muffler according to claim 3, characterized in that: The number of the positioning posts (13) is four groups, and the four groups of positioning posts (13) are symmetrically distributed on the surface of the second connection frame (12).

6. The low noise motorcycle muffler according to claim 1, characterized in that: The surface of the tail cover (11) is provided with an external thread (16), the surface of the external thread (16) is threadedly connected with a screw cap (18), and a filter screen (17) is provided between the tail cover (11) and the screw cap (18).

7. The low noise motorcycle muffler according to claim 6, characterized in that: The surface of the rotary cover (18) is provided with anti-slip grooves.

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