Sound conditioning device and exhaust pipe

Abstract

This utility model discloses a sound adjustment device and an exhaust pipe, relating to the field of engine exhaust system technology. It includes a mounting plate detachably connected to the end of a muffler. A first pipe and a second pipe are fixedly connected to both sides of the mounting plate. The first pipe is located inside the muffler's cavity, and the second pipe is located on the outer end face of the muffler. The outer circumference of the first pipe has multiple silencing holes to reduce exhaust noise. A transition pipe is provided on the inner circumferential wall of the first and second pipes, fixedly connected to the second pipe. This transition pipe further reduces the inner diameter of the exhaust gas passage, thereby reducing the vibration of the first and second pipes and lowering noise. A buffer pad is provided between the mounting plate and the muffler to reduce the vibration of the mounting plate, thus reducing noise. When the mounting plate, the first pipe, and the second pipe are installed in the muffler, the silencing effect is improved; after removal, the silencing effect is reduced, thus achieving adjustment of the exhaust sound.

Description

Technical Field

[0001] This utility model relates to the field of engine exhaust system technology, and in particular to a sound adjustment device and an exhaust pipe. Background Technology

[0002] In existing motor vehicle exhaust systems, the muffler, as a key component for reducing engine exhaust noise, typically adopts a fixed structural design. Its internal sound-absorbing elements are permanently welded or encapsulated inside the housing, making disassembly and adjustment impossible. While this fixed design can meet basic noise reduction requirements, it has significant limitations in practical applications. For example, users cannot flexibly adjust the exhaust sound characteristics according to personal preferences or different usage scenarios (such as urban roads, racetracks, or off-road environments), resulting in a monotonous user experience.

[0003] While some adjustable exhaust systems on the market currently use valve mechanisms to alter the exhaust path and thus change the sound, their core muffler structure remains a non-removable, integrated design, making it impossible to customize the type or layout of the muffler components. Therefore, there is an urgent need for a modular, detachable muffler structure that can meet users' customized exhaust sound needs and improve the user experience. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a sound adjustment device and exhaust pipe, which can easily change the exhaust sound, achieve personalized adjustments, and improve the user experience.

[0005] A sound adjustment device according to a first aspect embodiment of the present invention includes:

[0006] The mounting plate is detachably connected to the end of the muffler. The two sides of the mounting plate are provided with a first tube and a second tube that are fixedly connected. The first tube is located in the inner cavity of the muffler, and the second tube is located on the outer end face of the muffler. The outer circumference of the first tube has multiple sound-absorbing holes. The inner circumferential walls of the first tube and the second tube are provided with transition tubes, which are fixedly connected to the second tube. A buffer pad is provided between the mounting plate and the muffler.

[0007] A sound adjustment device according to a first aspect embodiment of the present invention has at least the following beneficial effects:

[0008] This embodiment features a mounting plate detachably connected to the end of the muffler. The mounting plate has a first pipe and a second pipe fixedly connected to its sides. The first pipe is located inside the muffler's cavity, and the second pipe is located on the outer end face of the muffler. The outer circumference of the first pipe has multiple silencing holes to reduce exhaust noise. A transition pipe is provided on the inner circumferential wall of the first and second pipes, fixedly connected to the second pipe. This transition pipe further reduces the inner diameter of the exhaust gas passage, thereby reducing the vibration of the first and second pipes and lowering noise. A buffer pad is provided between the mounting plate and the muffler to reduce the vibration of the mounting plate and prevent metallic impact sounds, thus reducing noise. When the mounting plate, the first pipe, and the second pipe are installed in the muffler, the silencing effect is improved; after removal, the silencing effect is reduced, thus achieving adjustment of the exhaust sound.

[0009] According to an embodiment of the first aspect of the present invention, the muffler is provided with a fixing plate, and a buffer pad is fixed between the mounting plate and the fixing plate to reduce the vibration transmission between the muffler and the mounting plate.

[0010] According to an embodiment of the first aspect of the present invention, the second tube includes an inner tube and an outer tube. The outer tube is sleeved on the outer periphery of the inner tube. Both the outer tube and the inner tube are fixedly connected to the mounting plate. There is a gap between the outer peripheral wall of the inner tube and the inner peripheral wall of the outer tube, thereby reducing the vibration transmission between the inner tube and the outer tube and avoiding resonance.

[0011] According to an embodiment of the first aspect of the present invention, the muffler is provided with a fixing plate, and the fixing plate is provided with a detachable bracket. The second tube is inserted through the bracket to fix the second tube.

[0012] According to an embodiment of the first aspect of the present invention, the second tube includes an inner tube and an outer tube. The outer tube is sleeved on the outer periphery of the inner tube. There is a gap between the outer peripheral wall of the inner tube and the inner peripheral wall of the outer tube. The outer tube is connected to a support, thereby preventing the vibration of the inner tube from being transmitted to the support.

[0013] According to an embodiment of the first aspect of the present invention, the second pipe body includes an installation section and a curved section. The extension direction of the curved section is at an angle to the extension direction of the installation section. The installation section is fixedly connected to the installation plate. The curved section is located at the end of the second pipe body away from the muffler, thereby changing the exhaust direction of the exhaust gas.

[0014] According to an embodiment of the first aspect of the present invention, a sleeve is provided on the outer periphery of the first tube body, the sleeve is connected to the mounting plate, and the sleeve extends from the mounting plate into the inner cavity of the muffler.

[0015] According to an embodiment of the first aspect of the present invention, the end of the sleeve away from the mounting plate is provided with an arc-shaped section, the outer periphery of the arc-shaped section has an arc-shaped surface, and the outer diameter of the arc-shaped section gradually decreases along the direction away from the second tube body, thereby guiding the airflow while avoiding resonance at the end of the sleeve to reduce noise.

[0016] According to an embodiment of the first aspect of the present invention, a baffle is provided at the end of the first pipe body away from the second pipe body, and an air hole is provided in the middle of the baffle to increase the resistance to exhaust gas and improve the noise reduction effect.

[0017] According to a second aspect of the present invention, an exhaust pipe is provided, comprising the above-described sound adjustment device, including:

[0018] The muffler includes a first muffler tube and a second muffler tube. The first muffler tube is located at one end of the muffler away from the mounting plate, and the second muffler tube is located at the other end. A fixing plate is provided inside the muffler, and the second muffler tube is installed on the fixing plate. The mounting plate is installed on the side of the fixing plate away from the second muffler tube, and the second muffler tube is sleeved on the outer periphery of the first tube body.

[0019] The exhaust pipe according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0020] This embodiment includes a muffler, which eliminates noise through a first muffler pipe and a second muffler pipe. The mounting plate of the sound adjustment device is detachably installed on the fixed plate of the muffler, thereby enabling convenient disassembly and assembly of the sound adjustment device, realizing flexible sound adjustment function, meeting users' customized needs for exhaust sound, and improving the user experience.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is an isometric view of the muffler in an embodiment of this utility model;

[0024] Figure 2 This is a first cross-sectional view of the muffler in an embodiment of this utility model;

[0025] Figure 3 for Figure 2 A magnified view of A in the middle;

[0026] Figure 4 This is a cross-sectional view of a sound adjustment device according to an embodiment of the present utility model;

[0027] Figure 5 This is a second cross-sectional view of the muffler in an embodiment of this utility model;

[0028] Figure 6 for Figure 5 A magnified view of B.

[0029] Figure label:

[0030] Silencer 100; Fixing plate 101; First silencer pipe 102; Second silencer pipe 103;

[0031] Mounting plate 110; First tube body 111; Second tube body 112; Silencing hole 113; Inner tube 114; Outer tube 115; Buffer pad 116; Bracket 117; Mounting section 118; Curved section 119; Sleeve 120; Arc-shaped section 121; Baffle 122; Vent 123; Transition tube 124. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figures 1 to 3A sound adjustment device according to a first aspect embodiment of the present invention includes components such as a mounting plate 110, a first tube 111, a second tube 112, and a transition tube 124. The mounting plate 110 is detachably fixed to a fixing plate 101 at the end of a muffler 100. The first tube 111 and the second tube 112 are respectively fixedly connected to both sides of the mounting plate 110. The first tube 111 is located inside the muffler 100, and its outer periphery is provided with multiple silencing holes 113 arranged in a ring array. The hole diameter can be adjusted according to actual silencing requirements, effectively reducing exhaust noise through sound wave reflection and interference. The second tube 112 is located on the outer end face of the muffler 100 and has good high-temperature resistance and corrosion resistance to ensure long-term stable operation. A transition pipe 124 is provided on the inner peripheral wall of the first pipe body 111 and the second pipe body 112. The transition pipe 124 can smoothly guide the airflow, reduce the inner diameter of the exhaust channel, and improve the exhaust speed through the Venturi effect, thus ensuring exhaust efficiency and reducing noise.

[0037] Understandably, a buffer pad 116 is provided between the mounting plate 110 and the muffler 100. This buffer pad 116 is made of high-temperature resistant silicone rubber material, which has good shock absorption and sealing performance, thereby absorbing vibration energy in actual use and effectively preventing collision noise between metal parts. Understandably, a fixing plate 101 is provided at the end of the muffler 100. The fixing plate 101 is fixedly connected to the muffler 100 housing by welding to form a stable support structure. The buffer pad 116 is tightly clamped between the mounting plate 110 and the fixing plate 101. This sandwich structure not only provides a good shock absorption effect but also prevents exhaust gas leakage.

[0038] Understandably, the fixed plate 101 is provided with a detachable bracket 117, and the second tube 112 passes through the bracket 117. The bracket 117 is installed on the fixed plate 101 by bolt connection, facilitating disassembly and maintenance. In some embodiments, the second tube 112 adopts an innovative double-layer tube structure, with an annular gap between the inner tube 114 and the outer tube 115. This design not only reduces heat conduction but also effectively blocks sound wave propagation. Furthermore, the outer tube 115 and the bracket 117 adopt a floating connection, allowing a certain relative axial displacement between the outer tube 115 and the bracket 117, further reducing vibration transmission. In some embodiments, the gap between the inner tube 114 and the outer tube 115 and themselves is filled with ceramic fiber insulation material, which can reduce heat conduction.

[0039] It is understood that the second pipe body 112 includes an installation section 118 and a curved section 119. The extending direction of the curved section 119 forms an angle with the extending direction of the installation section 118. The installation section 118 is fixedly connected to the mounting plate 110, and the curved section 119 is located at the end of the second pipe body 112 opposite to the muffler 100. In some embodiments, the axis of the curved section 119 is a straight line, and the curved section 119 extends downward. In other embodiments, the axis of the curved section 119 is an arc, with a certain bending angle (30 degrees-45 degrees), and the curved section 119 bends downward to change the exhaust direction and prevent external foreign objects from easily entering the second pipe body 112, thus avoiding blockage.

[0040] Reference Figure 4 It is understood that the first tube body 111 has a sleeve 120 on its outer periphery, the sleeve 120 is connected to the mounting plate 110, and the sleeve 120 extends from the mounting plate 110 into the inner cavity of the muffler 100. Furthermore, the end of the sleeve 120 has an arc-shaped segment 121, the outer periphery of which has an arc-shaped surface. Along the direction away from the second tube body 112, the outer diameter of the arc-shaped segment 121 gradually decreases, thereby guiding airflow while preventing resonance at the end of the sleeve 120, thus reducing noise. It is understood that the outer surface of the sleeve 120 is polished; this structure guides airflow smoothly, prevents vortex generation, and reduces high-frequency noise.

[0041] Reference Figure 5 and Figure 6 It is understood that a baffle 122 is provided at the end of the first pipe body 111, and an air hole 123 is provided in the middle of the baffle 122, which can increase the resistance to exhaust gas and improve the noise reduction effect. In some embodiments, the baffle 122 is made of high temperature resistant alloy material.

[0042] Reference Figure 1 and Figure 5 In a second aspect of this utility model, an exhaust pipe is provided, including the aforementioned sound adjustment device, further comprising a muffler 100. The muffler 100 includes a first muffler pipe 102 and a second muffler pipe 103. The first muffler pipe 102 is located at one end of the muffler 100 opposite to the mounting plate 110, and the second muffler pipe 103 is located at the other end. A fixing plate 101 is provided inside the muffler 100, and the second muffler pipe 103 is mounted on the fixing plate 101. The mounting plate 110 is mounted on the side of the fixing plate 101 opposite to the second muffler pipe 103, and the second muffler pipe 103 is sleeved on the outer periphery of the first pipe body 111. It is understood that both the first muffler pipe 102 and the second muffler pipe 103 have multiple silencing holes 113, enabling noise reduction.

[0043] In practical applications, the modular design of this invention allows users to flexibly adjust it according to the usage scenario: when used on urban roads, a complete set of noise reduction components can be installed to ensure that the noise meets environmental protection requirements; when used on the racetrack, some components can be removed to release engine performance and obtain an exhilarating sound experience.

[0044] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sound adjusting device installed in a muffler, characterized by, include: The mounting plate is detachably connected to the end of the muffler. The mounting plate has a first tube and a second tube fixedly connected on both sides. The first tube is located in the inner cavity of the muffler, and the second tube is located on the outer end face of the muffler. The outer periphery of the first tube has multiple sound-absorbing holes. The inner peripheral walls of the first tube and the second tube are provided with transition tubes, which are fixedly connected to the second tube. A buffer pad is provided between the mounting plate and the muffler.

2. A sound conditioning device according to claim 1, wherein, The muffler is provided with a fixing plate, and the buffer pad is fixed between the mounting plate and the fixing plate.

3. A sound conditioning device according to claim 1, wherein, The second tube body includes an inner tube and an outer tube. The outer tube is sleeved on the outer periphery of the inner tube. Both the outer tube and the inner tube are fixedly connected to the mounting plate. There is a gap between the outer peripheral wall of the inner tube and the inner peripheral wall of the outer tube.

4. The sound conditioning device of claim 1, wherein, The muffler is provided with a fixing plate, and the fixing plate is provided with a detachable bracket, through which the second tube passes.

5. A sound conditioning device according to claim 4, wherein, The second tube body includes an inner tube and an outer tube. The outer tube is sleeved on the outer periphery of the inner tube. There is a gap between the outer peripheral wall of the inner tube and the inner peripheral wall of the outer tube. The outer tube is connected to the support.

6. The sound conditioning device of claim 1, wherein, The second pipe body includes an installation section and a curved section. The extension direction of the curved section is at an angle to the extension direction of the installation section. The installation section is fixedly connected to the installation plate. The curved section is located at the end of the second pipe body away from the muffler.

7. A sound adjustment device according to claim 1, characterized in that, The outer periphery of the first tube is provided with a sleeve, the sleeve is connected to the mounting plate, and the sleeve extends from the mounting plate into the inner cavity of the muffler.

8. A sound adjustment device according to claim 7, characterized in that, The sleeve has an arc-shaped section at its end away from the mounting plate. The outer periphery of the arc-shaped section has an arc-shaped surface, and the outer diameter of the arc-shaped section gradually decreases along the direction away from the second tube body.

9. A sound adjustment device according to claim 1, characterized in that, The first tube body has a baffle at its end opposite to the second tube body, and the baffle has an air hole in the middle.

10. An exhaust pipe, characterized in that, A sound adjustment device as described in any one of claims 1 to 9, the sound adjustment device comprising a mounting plate, including: The muffler includes a first muffler tube and a second muffler tube. The first muffler tube is located at one end of the muffler away from the mounting plate, and the second muffler tube is located at the other end. A fixing plate is provided inside the muffler, and the second muffler tube is installed on the fixing plate. The mounting plate is installed on the side of the fixing plate away from the second muffler tube, and the second muffler tube is sleeved on the outer periphery of the first tube body.

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