Motorcycle and exhaust pipe damping structure

Abstract

The application provides an exhaust pipe damping structure, which comprises an exhaust main pipe and an exhaust branch pipe, a first pipe end of the exhaust main pipe is sleeved with a first flange connected movably, a second pipe end of the exhaust branch pipe is sleeved with a second flange connected movably; and further comprising an elastic tensioning structure for elastically tensioning the first pipe end and the second pipe end, two ends of a tension direction of the elastic tensioning structure are connected to the first pipe end and the second pipe end respectively. The exhaust main pipe and the exhaust branch pipe are connected through the first flange and the second flange, the first flange and the second flange are movably connected with the pipes, the vibration generated by the exhaust main pipe and the exhaust branch pipe is reduced, meanwhile, the elastic tensioning structure is arranged to provide tension to buffer the vibration of the exhaust main pipe and the exhaust branch pipe, the vibration of the exhaust pipe is further reduced, the structural toughness of the exhaust main pipe and the exhaust branch pipe is improved, and the structural strength of the exhaust pipe is improved. The application further provides an exhaust pipe damping structure.

Description

Technical Field

[0001] This invention relates to the field of motorcycle technology, and more specifically, to a motorcycle and exhaust pipe vibration damping structure. Background Technology

[0002] To meet noise control requirements, the most common method for reducing noise levels in motorcycles is to control the noise source. Other methods include using sound absorption, sound insulation, and vibration isolation technologies to reduce vibration and sound waves, thereby achieving the goal of reducing noise.

[0003] Motorcycle engine exhaust is discharged through the exhaust pipe and then silenced by the muffler before being released into the external environment. Existing motorcycle exhaust pipes, including the engine exhaust pipe, the muffler intake pipe, and the transition pipe connecting the two, have poor vibration damping effect in the buffer structure between the three pipe sections, which easily leads to the risk of exhaust pipe breakage. In addition, the high sealing precision required at the interfaces between the three pipe sections increases the difficulty of pipe manufacturing.

[0004] Therefore, how to improve the structural strength of motorcycle exhaust pipes is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an exhaust pipe vibration damping structure to improve the structural strength of a motorcycle exhaust pipe; the present invention also provides a motorcycle.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An exhaust pipe vibration damping structure includes an exhaust main pipe and an exhaust branch pipe, wherein a first flange is fitted on the first end of the exhaust main pipe and a second flange is fitted on the second end of the exhaust branch pipe.

[0008] It also includes an elastic tensioning structure that elastically tensions the first tube end and the second tube end, wherein the two ends of the elastic tensioning structure in the direction of tension are respectively connected to the first tube end and the second tube end.

[0009] Preferably, in the above-mentioned exhaust pipe vibration damping structure, a first sealing ring is provided between the first flange and the first pipe end;

[0010] A second sealing ring is provided between the second flange and the second pipe end.

[0011] Preferably, in the above-mentioned exhaust pipe vibration damping structure, both the first flange and the second flange are high-neck flanges, and the first sealing ring is a first spherical sealing ring that is movablely fitted with the first flange;

[0012] The second sealing ring is a second spherical sealing ring that movably mates with the second flange.

[0013] Preferably, in the above-mentioned exhaust pipe vibration damping structure, the elastic tensioning structure includes a damping spring whose two ends are respectively connected to the first pipe end and the second pipe end.

[0014] Preferably, in the above-mentioned exhaust pipe vibration damping structure, the elastic tensioning structure further includes a first bracket extending out of the outer periphery of the first pipe end and a second bracket extending out of the second pipe end;

[0015] The two ends of the damping spring are connected to the first bracket and the second bracket, respectively.

[0016] Preferably, in the above-mentioned exhaust pipe vibration damping structure, the extended ends of the first bracket and the second bracket are each provided with two tension spring fulcrums, and the two tension spring fulcrums are arranged circumferentially around the first pipe end and the second pipe end.

[0017] Each tension spring fulcrum is connected to one of the aforementioned damping tension springs.

[0018] Preferably, in the above-mentioned exhaust pipe vibration damping structure, the elastic tensioning structure includes two sets arranged radially symmetrically along the first pipe end and the second pipe end.

[0019] A motorcycle has a segmented exhaust manifold between its engine and muffler, characterized in that the exhaust manifold is provided with an exhaust pipe vibration damping structure as described in any one of the above descriptions between it and the engine and / or the muffler.

[0020] Preferably, in the above-mentioned motorcycle, an engine exhaust pipe extends from the motorcycle engine, and a muffler intake pipe extends from the muffler.

[0021] The exhaust pipe vibration damping structure is provided between the exhaust branch pipe and the engine exhaust pipe, and between the exhaust branch pipe and the muffler intake pipe.

[0022] The exhaust pipe vibration reduction structure provided by this invention includes a main exhaust pipe and an exhaust branch pipe. A first flange with a movable connection is fitted to the first end of the main exhaust pipe, and a second flange with a movable connection is fitted to the second end of the exhaust branch pipe. It also includes an elastic tensioning structure that elastically tightens the first and second ends of the exhaust pipe. The two ends of the elastic tensioning structure in the direction of tension are respectively connected to the first and second ends of the exhaust pipe. The main exhaust pipe and the exhaust branch pipe are connected via the first and second flanges. Both the first and second flanges are movably connected to the pipeline, reducing the vibration generated by the main exhaust pipe and the exhaust branch pipe. Simultaneously, the elastic tensioning structure provides tension to buffer the vibration of the main exhaust pipe and the exhaust branch pipe, further reducing the vibration of the exhaust pipe, improving the structural toughness of the main exhaust pipe and the exhaust branch pipe, and increasing the structural strength of the exhaust pipe. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the arrangement structure of the exhaust pipe vibration reduction structure provided by the present invention;

[0025] Figure 2 for Figure 1 Top view. Detailed Implementation

[0026] This invention discloses an exhaust pipe vibration damping structure, which improves the structural strength of the motorcycle exhaust pipe; this invention also provides a motorcycle.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the arrangement structure of the exhaust pipe vibration reduction structure provided by the present invention; Figure 2 for Figure 1 Top view.

[0029] This invention provides a vibration damping structure for an exhaust pipe, including a main exhaust pipe 1 and an exhaust branch pipe 2. A first flange 11 is movably connected to the first end of the main exhaust pipe 1, and a second flange 21 is movably connected to the second end of the exhaust branch pipe 2. The structure also includes an elastic tensioning structure 3 that elastically tightens the first and second ends of the pipes. The two ends of the elastic tensioning structure 3 in the direction of tension are respectively connected to the first and second ends of the pipes. The main exhaust pipe 1 and the exhaust branch pipe 2 are connected via the first flange 11 and the second flange 21. Both the first flange 11 and the second flange 21 are movably connected to the pipes, reducing the vibration generated by the main exhaust pipe 1 and the exhaust branch pipe 2. Simultaneously, the elastic tensioning structure 3 provides tension to buffer the vibration of the main exhaust pipe 1 and the exhaust branch pipe 2, further reducing the vibration of the exhaust pipe, improving the structural toughness of the main exhaust pipe 1 and the exhaust branch pipe 2, and increasing the structural strength of the exhaust pipe. Here, "exhaust pipe" refers to both the main exhaust pipe and the exhaust branch pipe.

[0030] In one specific embodiment of this case, a first sealing ring is provided between the first flange 11 and the first pipe end; a second sealing ring is provided between the second flange 21 and the second pipe end. To ensure the sealing performance of the movable connection between the first flange and the first pipe end, the first sealing ring is provided to seal the first flange and prevent air leakage.

[0031] Similarly, a second sealing ring is used to seal the second flange and the second pipe end to prevent air leakage.

[0032] In a specific embodiment of this case, both the first flange 11 and the second flange 21 are high-neck flanges. The first sealing ring is a first spherical sealing ring that movably mates with the first flange; the second sealing ring is a second spherical sealing ring that movably mates with the second flange. Both the first and second flanges are high-neck flanges, and the connection end between the high-neck flange and the pipeline is a spherical mounting surface. Correspondingly, the first sealing ring uses a first spherical sealing ring, and the second sealing ring uses a second spherical sealing ring. The spherical mating structure of the first flange and the first spherical sealing ring ensures the movable connection and sealing performance in all directions during vibration. Similarly, the spherical mating structure of the second flange and the second spherical sealing ring ensures the movable connection and sealing performance in all directions during vibration, reducing the vibration of the exhaust pipeline caused by rigid connections.

[0033] In one specific embodiment of this case, the elastic tensioning structure 3 includes vibration-damping springs whose two ends are respectively connected to the first pipe end and the second pipe end. The exhaust main pipe 1 and the exhaust branch pipe 2 adopt a flange and spherical connection structure for the pipeline. The two ends of the elastic tensioning structure 3 are respectively connected to the first pipe end and the second pipe end. When either pipe experiences vibration displacement in any direction, it can elastically dampen the vibration and provide an elastic restoring force. The elastic tensioning structure 3 uses vibration-damping springs, which has a simple installation structure and can ensure the stability of the structure during long-term operation.

[0034] In a specific embodiment of this case, the elastic tensioning structure 3 further includes a first bracket 32 ​​extending out of the outer periphery of the first pipe end and a second bracket 33 extending out of the second pipe end; the two ends of the damping tension spring are respectively connected to the first bracket 32 ​​and the second bracket 33. The exhaust main pipe 1 and the exhaust branch pipe 2 are connected through a first flange and a second flange. The outer diameters of the pipes and flanges are different. To avoid interference, the first bracket 32 ​​is set to extend out of the outer periphery of the first pipe end, and the second bracket 33 is set to extend out of the outer periphery of the second pipe end. The damping tension spring is connected through the tension spring fulcrum set on the first bracket 32 ​​and the second bracket 33 to avoid interference between the damping tension spring and the flange edge after the first pipe end and the second pipe end are displaced due to vibration, thereby further improving stability.

[0035] Considering that the exhaust branch pipe 1 and the exhaust main pipe 2 are mounted on a spherical end face with a high-neck flange, the displacement direction of the exhaust branch pipe 2 and the exhaust main pipe 1 due to vibration is not fixed. Multiple elastic tensioning structures 3 can be arranged around the circumference of the exhaust pipe. The elastic tensioning structures 3 can be evenly arranged or set in different numbers in the main vibration displacement direction, so as to provide a restoring elastic force and reduce vibration after the exhaust main pipe 1 and the exhaust branch pipe 2 are displaced in any direction.

[0036] In a specific embodiment of this case, the extended ends of the first bracket 32 ​​and the second bracket 33 are each provided with two tension spring supports, which are arranged circumferentially around the first pipe end and the second pipe end; each tension spring support is connected to a vibration damping spring. The outer periphery of the exhaust main pipe 1 and the exhaust branch pipe 2 is cylindrical, and two tension spring supports are provided on the first bracket 32 ​​and the second bracket 33.

[0037] Furthermore, the elastic tensioning structure 3 includes two sets arranged radially symmetrically along the first and second pipe ends. The two sets of first and second supports are arranged radially opposite each other along the exhaust pipe. Two tension spring fulcrums are symmetrically arranged on each of the first and second supports. Four damping tension springs ensure the structural stability of the exhaust branch pipe and the exhaust main pipe. The four damping tension springs can be evenly distributed around the outer periphery of the exhaust main pipe and exhaust branch pipe, or they can be concentrated in the main displacement direction to meet the structural strength requirements at different locations.

[0038] Both the first bracket 32 ​​and the second bracket 33 are made by bending tubing. The bent tubing is used to hook the vibration damping springs. The position is set in an M-shape to hook and cooperate with the two vibration damping springs.

[0039] Based on the exhaust pipe vibration damping structure provided in the above embodiments, the present invention also provides a motorcycle, wherein a segmented exhaust branch pipe is provided between the motorcycle engine and the muffler, and the exhaust branch pipe is provided with the exhaust pipe vibration damping structure provided in the above embodiments between it and the motorcycle engine and / or the muffler.

[0040] Furthermore, an exhaust pipe 4 extends from the motorcycle engine, and a muffler intake pipe 51 extends from the muffler 5. Exhaust pipe vibration damping structures are provided between the exhaust branch pipe 2 and the engine exhaust pipe 4, as well as between the exhaust branch pipe 2 and the muffler intake pipe 51. The motorcycle engine and the muffler are connected by an exhaust branch pipe. An exhaust pipe vibration damping structure is provided between the exhaust branch pipe 2 and the engine exhaust pipe 4 of the motorcycle engine to reduce the vibration of both. An exhaust pipe vibration damping structure is also provided between the exhaust branch pipe 2 and the muffler intake pipe 51. Through the arrangement of the two exhaust pipe vibration damping structures 3 on the motorcycle exhaust pipe 4, the vibration transmitted from the engine to the exhaust pipe is reduced overall, improving structural stability. Figure 2The image only shows the location of the damping springs; the hook connection between the first and second brackets is not shown simultaneously.

[0041] Since the motorcycle adopts the exhaust pipe vibration damping structure of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the exhaust pipe vibration damping structure.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibration damping structure for an exhaust pipe, characterized in that, It includes an exhaust main pipe and an exhaust branch pipe. The first end of the exhaust main pipe is fitted with a first flange that is movably connected, and the second end of the exhaust branch pipe is fitted with a second flange that is movably connected. The exhaust main pipe and the exhaust branch pipe are connected through the first flange and the second flange. A first sealing ring is provided between the first flange and the first pipe end. A second sealing ring is provided between the second flange and the second pipe end. The first flange and the first pipe end are sealed by a first sealing ring, and the second flange and the second pipe end are sealed by a second sealing ring; both the first flange and the second flange are high-neck flanges, the first sealing ring is a first spherical sealing ring that is movably fitted with the first flange, the second sealing ring is a second spherical sealing ring that is movably fitted with the second flange, and the connection end of the high-neck flange with the first sealing ring and the second sealing ring is a spherical mounting surface; It also includes an elastic tensioning structure that elastically tensions the first tube end and the second tube end, wherein the two ends of the elastic tensioning structure in the direction of tension are respectively connected to the first tube end and the second tube end.

2. The exhaust pipe damping structure according to claim 1, characterized by, The elastic tensioning structure includes a damping spring whose two ends are respectively connected to the first tube end and the second tube end.

3. The exhaust pipe damping structure according to claim 2, characterized by The elastic tensioning structure further includes a first bracket extending out of the outer periphery of the first tube end and a second bracket extending out of the second tube end; The two ends of the damping spring are connected to the first bracket and the second bracket, respectively.

4. The exhaust pipe damping structure according to claim 3, characterized by The extended ends of the first bracket and the second bracket are each provided with two tension spring fulcrums, and the two tension spring fulcrums are arranged circumferentially around the first tube end and the second tube end. Each tension spring fulcrum is connected to one of the aforementioned damping tension springs.

5. The exhaust pipe damping structure according to any one of claims 3-4, characterized by, The elastic tensioning structure comprises two sets arranged radially symmetrically along the first tube end and the second tube end.

6. A motorcycle characterized by the fact that An exhaust pipe vibration damping structure as described in any one of claims 1-5 is provided between the motorcycle engine and the muffler.

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