Exhaust silencer mechanism of all-terrain vehicle

Abstract

The utility model provides an exhaust silencer mechanism of an all-terrain vehicle, and belongs to the technical field of automobile exhaust silencer connecting structures. Compared with the prior art that two exhaust pipes are buckled together by using parts such as a spring and the like, the exhaust silencer mechanism has the advantages that through the design of the connecting parts between the first exhaust pipe and the second exhaust pipe, the four connecting plates of the exhaust silencer mechanism ensure that the situation that the spring deforms due to temperature rise of the exhaust pipe close to a seat cushion accessory is avoided; the problem that two exhaust pipes are separated is solved; meanwhile, due to the design of the metal corrugated pipe, vibration and torque can be absorbed, on one hand, vibration and noise of an engine are reduced in advance, on the other hand, due to the fact that the surface area of the inner wall of the metal corrugated pipe is larger, a better cooling effect is achieved, and the overall heat dissipation effect of the exhaust pipe assembly is improved; and through the design of a buffer device, when the all-terrain vehicle runs on a bumpy road surface, a certain buffer effect is achieved, and the probability that the first exhaust pipe and the second exhaust pipe are separated from the connecting component is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile exhaust muffler connection structure, in particular to an exhaust muffler mechanism of an all-terrain vehicle. Background Art

[0002] All-terrain vehicles are vehicles that can travel on any terrain, and can travel freely on terrain that is difficult for ordinary vehicles to maneuver. In my country, they are commonly known as beach cars or farmer's cars. This type of vehicle has wide tires that can increase the contact area with the ground, generate greater friction and reduce the pressure of the vehicle on the ground, making it easy to travel on beaches, riverbeds, forest roads, streams, and harsh desert terrains. At the same time, compared with ordinary cars, this vehicle has a more compact structure and a smaller model.

[0003] The automobile exhaust muffler is a device that reduces the noise of automobile exhaust. Its function is to eliminate noise by reducing and attenuating the pulsation of exhaust pressure. According to the interference principle, there are two basic noise elimination methods for exhaust mufflers: absorption and reflection. We will not introduce them in detail here. After the high-temperature exhaust gas discharged by the engine enters the exhaust muffler through the exhaust pipe, it gradually cools down, reduces pressure, and reduces vibration and energy.

[0004] Because all-terrain vehicles are smaller than normal cars, the exhaust pipe connecting the engine and the exhaust muffler often passes under the seat cushion of the driver and passengers; even if the structure and installation position of certain components are adjusted, some models avoid the exhaust pipe passing under the seat cushion, but compared with ordinary cars, the exhaust pipe is still closer to the seat cushion, affecting the riding comfort of the driver and passengers.

[0005] At the same time, due to the compact structure of the ATV, when high-temperature exhaust gas passes through the exhaust pipe, the heat is not easy to dissipate. Even if the exhaust pipe avoids passing under the seat cushion, the situation that the heat is difficult to dissipate still exists. When the exhaust pipe passes under the seat cushion, the temperature rise of the exhaust pipe will be more obvious; this will cause the exhaust pipe to break, and the connecting parts at the connection of the two exhaust pipes, such as springs, will fail, causing the connection to detach, affecting the air tightness of the exhaust pipe. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide an exhaust muffler mechanism for an all-terrain vehicle, which is used to solve the problem in the prior art that the exhaust pipe connecting the exhaust muffler and the engine of the all-terrain vehicle breaks and becomes detached at the connection due to difficulty in dissipating heat.

[0007] To achieve the above-mentioned purpose and other related purposes, the utility model provides an exhaust muffler mechanism of an all-terrain vehicle, including an exhaust pipe assembly, wherein the two ends of the exhaust pipe assembly are respectively connected to the exhaust muffler and the engine, and the exhaust pipe assembly includes an exhaust pipe 1 and an exhaust pipe 2, and the exhaust pipe 1 and the exhaust pipe 2 are connected by a connecting component; a buffer device is installed on the connecting component; the connecting component includes a metal bellows, a connecting plate 1, a connecting plate 2, a connecting plate 3 and a connecting plate 4; one end of the exhaust pipe 1 is connected to the exhaust muffler, and the other end is installed with the connecting plate 1; one end of the exhaust pipe 2 is connected to the engine, and the other end is installed with the connecting plate 2; the connecting plate 3 and the connecting plate 4 are respectively installed at the two ends of the metal bellows; the connecting plate 1 is connected to the connecting plate 3, and the connecting plate 2 is connected to the connecting plate 4.

[0008] Optionally, the metal bellows is a double-layer structure.

[0009] Optionally, the connection method between the first connecting plate and the third connecting plate, and the connection method between the second connecting plate and the fourth connecting plate are both bolt connections.

[0010] Optionally, the buffer device includes a long bolt, a buffer spring and a nut; the long bolt passes through the connecting plate one and the connecting plate two in sequence, the nut locks the long bolt and the connecting plate two, and a gap is left between the connecting plate one and the connecting plate two; the buffer spring is sleeved on the long bolt, one end of the buffer spring is against the end of the long bolt, and the other end of the buffer spring is against the connecting plate one.

[0011] Optionally, the buffer device further comprises a buffer sleeve, wherein the buffer sleeve is sleeved on the long bolt and is located between the end of the long bolt and the connecting plate.

[0012] Optionally, there are two sets of buffer devices, which are symmetrically arranged on both sides of the exhaust pipe.

[0013] Optionally, a pad is installed between the second connecting plate and the fourth connecting plate, and the second connecting plate, the pad and the fourth connecting plate are tightly connected together.

[0014] Optionally, a fireproof cover is mounted on the second exhaust pipe.

[0015] As described above, the exhaust muffler mechanism of an all-terrain vehicle of the utility model has at least the following beneficial effects:

[0016] 1. The exhaust muffler mechanism of the all-terrain vehicle is designed with a connecting component between the exhaust pipe one and the exhaust pipe two. Compared with the prior art that uses springs and other components to buckle the two exhaust pipes together, the four connecting plates of the exhaust muffler mechanism of the present invention ensure that the exhaust pipe close to the seat cushion accessory will not be detached from the two exhaust pipes due to the increase in temperature and the deformation of the spring; at the same time, the design of the metal bellows, compared with the straight exhaust pipe used in the prior art, can absorb vibration and torque. On the one hand, it reduces the vibration and noise of the engine in advance. On the other hand, because the surface area of ​​the inner wall of the metal bellows is larger, it also has a better cooling effect, thereby improving the overall heat dissipation effect of the exhaust pipe assembly; and through the design of the buffer device, when the all-terrain vehicle is traveling on a rugged road, it plays a certain buffering role, further reducing the probability of the exhaust pipe one and the exhaust pipe two being detached from the connecting component.

[0017] 2. The exhaust muffler mechanism of the all-terrain vehicle is designed with a double-layer structure through the metal bellows, which further improves the silencing effect and heat dissipation effect of the entire exhaust pipe assembly.

[0018] 3. The exhaust muffler mechanism of this all-terrain vehicle is designed with bolt connections through the connection methods of connecting one plate and connecting three plates, and connecting two plates and connecting four plates. Compared with connection methods such as welding, it is not only firm, but also convenient for subsequent disassembly and maintenance; compared with connection methods such as springs and buckles, bolt connections are more secure and are not easy to deform after being exposed to high temperatures, reducing the probability of detachment at the connection of the exhaust pipe assembly.

[0019] 4. The exhaust muffler mechanism of the all-terrain vehicle is designed with a buffer device consisting of a long bolt, a buffer spring and a nut. While achieving a buffering effect, it is also compatible with the bolt connection method of the connecting parts; a gap is left between the connecting plate one and the connecting plate two to provide a buffering distance.

[0020] 5. The exhaust muffler mechanism of the all-terrain vehicle also includes a buffer sleeve through a buffer device. The buffer sleeve is sleeved on the long bolt and is located between the end of the long bolt and a connecting plate. The design ensures that when the connecting component is impacted, the buffer device can ensure the overall stability of the connecting component while playing a buffering role.

[0021] 6. The exhaust muffler mechanism of the all-terrain vehicle has two sets of buffer devices, which are symmetrically arranged on both sides of the exhaust pipe. This ensures that the buffer device can play a buffering function to prevent the exhaust pipe one, the exhaust pipe two and the connecting parts from being separated, while also ensuring that the exhaust pipe one, the exhaust pipe two and the connecting parts will not be separated due to different magnitudes of torque on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Shown is a schematic diagram of an exhaust muffler mechanism for an all-terrain vehicle according to the utility model.

[0023] Figure 2 A schematic diagram showing an exhaust muffler mechanism for an all-terrain vehicle in the prior art.

[0024] Component number description

[0025] Exhaust pipe assembly 1, exhaust pipe 1 11, exhaust pipe 2 12, connecting component 13, connecting plate 1 131, connecting plate 2 132, connecting plate 3 133, connecting plate 4 134, backing plate 135, metal bellows 136, buffer device 14, long bolt 141, buffer spring 142, nut 143, buffer sleeve 144, exhaust muffler 2, engine 3, fireproof cover 4. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] See also Figure 1 to Figure 2 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0028] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0029] See also Figure 1 and Figure 2The utility model provides an exhaust muffler mechanism of an all-terrain vehicle, including an exhaust pipe assembly 1, the two ends of which are respectively connected to an exhaust muffler 2 and an engine 3, the exhaust pipe assembly 1 includes an exhaust pipe 11 and an exhaust pipe 2 12, the exhaust pipe 11 and the exhaust pipe 2 12 are connected by a connecting component 13; the connecting component 13 includes a metal bellows 136, a connecting plate 131, a connecting plate 2 132, a connecting plate 3 133 and a connecting plate 4 134; one end of the exhaust pipe 11 is connected to the exhaust muffler 2, and the other end is installed with the connecting plate 131; one end of the exhaust pipe 12 is connected to the engine 3, and the other end is installed with the connecting plate 2 132; the connecting plate 3 132 and the connecting plate 4 134 are respectively installed at The two ends of the metal bellows 136; the connecting plate 131 is connected to the connecting plate 3 133, and the connecting plate 2 132 is connected to the connecting plate 4 134; compared with the prior art that uses springs and other components to buckle the two exhaust pipes together, the four connecting plates of the exhaust muffler 2 mechanism ensure that the exhaust pipe close to the seat cushion accessory will not be deformed due to the temperature increase and the spring will not be separated from the two exhaust pipes; at the same time, the design of the metal bellows 136, compared with the straight exhaust pipe used in the prior art, can absorb vibration and torque. On the one hand, it reduces the vibration and noise of the engine 3 in advance, and on the other hand, because the inner wall surface area of ​​the metal bellows 136 is larger, it also has a better cooling effect, thereby improving the overall heat dissipation effect of the exhaust pipe assembly 1.

[0030] like Figure 1 As shown, a buffer device 14 is installed on the connecting component 13, which plays a certain buffering role when the all-terrain vehicle travels on a rough road, further reducing the probability of the exhaust pipe 11 and the exhaust pipe 2 12 being separated from the connecting component 13.

[0031] In another embodiment, see Figure 1 The metal bellows 136 is a double-layer structure. The two layers of bellows can absorb and reflect more sound waves and absorb more heat, thereby further improving the silencing effect and heat dissipation effect of the entire exhaust pipe assembly 1.

[0032] In another embodiment, see Figure 1 The connection method between the first connecting plate 131 and the third connecting plate 133, and the connection method between the second connecting plate 132 and the fourth connecting plate 134 are all bolt connections, which are not only firm but also convenient for subsequent disassembly and maintenance compared to connection methods such as welding; compared to connection methods such as springs and snaps, bolt connections are more firm and are not easy to deform after being exposed to high temperatures, thereby reducing the probability of detachment at the connection of the exhaust pipe assembly 1.

[0033] In another embodiment, see Figure 1The buffer device 14 includes a long bolt 141, a buffer spring 142 and a nut 143; the long bolt 141 passes through the connecting plate 131 and the connecting plate 132 in sequence, and the nut 143 locks the long bolt 141 and the connecting plate 132, leaving a gap between the connecting plate 131 and the connecting plate 132; the buffer spring 142 is sleeved on the long bolt 141, one end of the buffer spring 142 abuts against the end of the long bolt 141, and the other end of the buffer spring 142 abuts against the connecting plate 131; the design of the buffer device 14 consisting of the long bolt 141, the buffer spring 142 and the nut 143, while achieving a buffering effect, it is also adapted to the bolt connection method of the connecting component 13; wherein a gap is left between the connecting plate 131 and the connecting plate 132 in order to provide a buffering distance, and the buffering distance can be set to 1cm, 1.5cm, etc.

[0034] In another embodiment, see Figure 1 The buffer device 14 also includes a buffer sleeve 144, which is sleeved on the long bolt 141 and located between the end of the long bolt 141 and the connecting plate 131, so that after the connecting component 13 is impacted, the buffer device 14 can ensure the overall stability of the connecting component 13 while playing a buffering role.

[0035] In another embodiment, see Figure 1 The buffer device 14 has two sets and is symmetrically arranged on both sides of the exhaust pipe 11, ensuring that the buffer device 14 plays a buffering function to prevent the exhaust pipe 11, the exhaust pipe 12 and the connecting component 13 from being separated, while ensuring that the exhaust pipe 11, the exhaust pipe 12 and the connecting component 13 will not be separated due to different magnitudes of torque on both sides.

[0036] In another embodiment, see Figure 1 A pad 135 is installed between the second connecting plate 132 and the fourth connecting plate 134, and the second connecting plate 132, the pad 135 and the fourth connecting plate 134 are tightly connected together, thereby ensuring the connection firmness between the second connecting plate 132 and the fourth connecting plate 134; and the reason why the buffer device 14 is not installed between the second connecting plate 132 and the fourth connecting plate 134 like the buffer device 14 is not installed between the first connecting plate 131 and the third connecting plate 133 is that, on the one hand, the second connecting pipe is connected to the engine 3, where the exhaust gas temperature is higher, and the spring of the buffer device 14 is easily deformed by high temperature. On the other hand, the buffer effect can be achieved by installing the buffer device 14 only on one side of the connecting component 13, so there is no need to install the buffer device 14 on both sides of the connecting component 13.

[0037] In another embodiment, see Figure 1Because the second exhaust pipe 12 is directly connected to the engine 3, it is exposed to a higher temperature than the first exhaust pipe 11 and is more susceptible to the adverse effects of high temperature. Therefore, a fireproof cover 4 is installed on the second exhaust pipe 12 to prevent it from being burned through by high-temperature exhaust gas and causing safety accidents.

[0038] In other embodiments, Figure 1 As shown, the metal bellows 136 is made of stainless steel. The designer can also choose other alloy materials, such as aluminum alloy, according to the specific situation. The advantage of using stainless steel is that compared with other alloy materials, the stainless steel metal bellows 136 can effectively reduce the vibration generated by the operation of the engine 3 when used as an exhaust pipe due to its high density and large elastic modulus, thereby reducing the noise level in the car. This plays a vital role in improving ride comfort, especially in long-distance driving. At the same time, the stainless steel metal bellows 136 has excellent corrosion resistance, and its surface is covered with a solid oxide film, which can effectively resist the erosion of various corrosive media. In addition, it also has high strength and good plasticity, and can maintain stable performance in various harsh environments. These characteristics make the stainless steel metal bellows 136 particularly suitable for the driving environment of all-terrain vehicles.

[0039] In summary, the utility model adopts the design of the connecting component 13 between the exhaust pipe 11 and the exhaust pipe 2, compared with the prior art that uses springs and other components to buckle the two exhaust pipes together, the four connecting plates of the exhaust muffler 2 mechanism ensure that the exhaust pipe near the seat cushion attachment will not be deformed due to the temperature rise, resulting in the problem of the two exhaust pipes being separated; at the same time, the design of the metal bellows 136, compared with the straight exhaust pipe used in the prior art, can absorb vibration and torque, on the one hand, reduce the vibration and noise of the engine 3 in advance, and on the other hand, because the inner wall surface area of ​​the metal bellows 136 is larger, it also has a better cooling effect, improving the overall heat dissipation effect of the exhaust pipe assembly 1; and through the design of the buffer device 14, when the all-terrain vehicle is driving on a rugged road, it plays a certain buffering role, further reducing the probability of the exhaust pipe 11, the exhaust pipe 2 and the connecting component 13 being separated. Therefore, the utility model effectively overcomes the shortcomings of the prior art and has a high industrial utilization value.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An exhaust muffler mechanism for an all-terrain vehicle, comprising an exhaust pipe assembly, wherein both ends of the exhaust pipe assembly are respectively connected to the exhaust muffler and the engine, and characterized in that: The exhaust pipe assembly comprises an exhaust pipe 1 and an exhaust pipe 2, wherein the exhaust pipe 1 and the exhaust pipe 2 are connected via a connecting component; a buffer device is installed on the connecting component; The connecting components include a metal bellows, a connecting plate 1, a connecting plate 2, a connecting plate 3 and a connecting plate 4; One end of the exhaust pipe is connected to the exhaust muffler, and the other end is installed with the connecting plate; One end of the exhaust pipe is connected to the engine, and the other end is installed with the connecting plate; The third connecting plate and the fourth connecting plate are respectively installed at two ends of the metal bellows; The first connecting plate is connected to the third connecting plate, and the second connecting plate is connected to the fourth connecting plate.

2. The exhaust muffler mechanism of an all-terrain vehicle according to claim 1, characterized in that: The metal bellows has a double-layer structure.

3. The exhaust muffler mechanism of an all-terrain vehicle according to claim 1, characterized in that: The connection method between the first connecting plate and the third connecting plate, and the connection method between the second connecting plate and the fourth connecting plate are both bolt connections.

4. The exhaust muffler mechanism of an all-terrain vehicle according to claim 1, characterized in that: The buffer device comprises a long bolt, a buffer spring and a nut; The long bolt passes through the first connecting plate and the second connecting plate in sequence, and the nut locks the long bolt and the second connecting plate, and a gap is left between the first connecting plate and the second connecting plate; The buffer spring is sleeved on the long bolt, one end of the buffer spring abuts against the end of the long bolt, and the other end of the buffer spring abuts against the connecting plate.

5. The exhaust muffler mechanism of an all-terrain vehicle according to claim 4, characterized in that: The buffer device also includes a buffer sleeve, which is sleeved on the long bolt and located between the end of the long bolt and the connecting plate.

6. The exhaust muffler mechanism of an all-terrain vehicle according to claim 4, characterized in that: The buffer device has two sets and is symmetrically arranged on both sides of the exhaust pipe.

7. The exhaust muffler mechanism of an all-terrain vehicle according to claim 1, characterized in that: A pad is installed between the second connecting plate and the fourth connecting plate, and the second connecting plate, the pad and the fourth connecting plate are tightly connected together.

8. The exhaust muffler mechanism of an all-terrain vehicle according to claim 1, characterized in that: The second exhaust pipe is provided with a fireproof cover.

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