Exhaust tail pipe with noise reduction function

Abstract

The exhaust tail pipe with the noise reduction function comprises a tail pipe body, the top and the bottom of the tail pipe body are each provided with a sound absorption assembly used for fixing and reducing noise, each sound absorption assembly comprises a plurality of fixing frames arranged on the top and the bottom of the tail pipe body in a sleeved mode, and sound absorption plates used for absorbing sound are arranged in the fixing frames. An installation part used for fixing the position of the fixing frame is arranged at the connecting position of the fixing frame and the tail pipe, positioning holes are symmetrically formed in the two sides of the fixing frame, and the installation part is arranged in the positioning holes. Through the design of the fixing frame, the sound-absorbing plate, the mounting pieces and the positioning holes, when the sound-absorbing plate is used, the fixing frame is fixed on the tail pipe through the mounting pieces located in the positioning holes, the sound-absorbing plate is attached to the tail pipe, and when fluid and the pipe wall rub to generate vibration and generate noise, the sound-absorbing plate is fixed to the tail pipe through the mounting pieces. And generated noise is directly absorbed through the acoustic panel, so that the situation that the noise affects a driver is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust tail pipes, in particular to an exhaust tail pipe with a noise reduction function. Background Art

[0002] The exhaust tail pipe is a part of the vehicle exhaust system, responsible for discharging the exhaust gas generated by the engine outside the vehicle. It is usually located at the rear of the vehicle and is connected to the end of the exhaust system.

[0003] When the gas flows at high speed in the exhaust tail pipe, friction will occur between the fluid and the pipe wall, forming a turbulent flow. This turbulent flow will disturb the pipe wall and generate vibration, thus generating noise. The noise will interfere with the driver's attention, making it difficult for the driver to concentrate on the driving task, thus affecting driving safety. Content of the Utility Model

[0004] The purpose of the utility model is to provide an exhaust tail pipe with a noise reduction function to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: An exhaust tail pipe with a noise reduction function includes a tail pipe. Sound absorption components for fixing and noise reduction are arranged at both the top and the bottom of the tail pipe. The sound absorption components include a plurality of fixing frames respectively sleeved on the top and the bottom of the tail pipe. A sound absorption board for sound absorption is arranged inside the fixing frame. An installation part for fixing the position of the fixing frame is arranged at the connection between the fixing frame and the tail pipe. Positioning holes are symmetrically opened on both sides of the fixing frame, and the installation part is arranged inside the positioning holes.

[0006] Preferably, the horizontal longitudinal section of the fixing frame is set as a semi-circular ring.

[0007] Preferably, the installation part includes a fixing block fixedly connected between the inner walls of the front and the back of the positioning hole. A pressing plate is arranged on one side of the fixing block. A limiting part for restricting the movement of the fixing block is arranged at the connection between the fixing block and the pressing plate.

[0008] Preferably, the limiting part includes a limiting hole opened in the middle of the fixing block. A limiting post is fixedly connected to one side of the pressing plate. The limiting post is inserted and connected inside the limiting hole. A fixing part for fixing the position of the pressing plate is arranged on one side of the tail pipe.

[0009] Preferably, the pressing plate is inserted and connected inside the positioning hole.

[0010] Preferably, a through hole is opened in the middle of the pressing plate. The fixing part includes a bolt inserted and connected inside the through hole.

[0011] Preferably, a plurality of nuts are symmetrically and fixedly connected to both sides of the tail pipe, and the end of the bolt is threadedly inserted through the middle of the nut.

[0012] Preferably, a connection hole is formed on one side of the fixing block, and the nut is inserted through the inside of the connection hole.

[0013] The technical effects and advantages of the present utility model:

[0014] Through the design of the fixing frame, sound-absorbing plate, mounting member and positioning hole, when in use, the fixing frame is fixed on the tail pipe through the mounting member located in the positioning hole, and the sound-absorbing plate is made to fit the tail pipe. When noise is generated due to friction and vibration between the fluid and the pipe wall, the generated noise is directly absorbed by the sound-absorbing plate, thereby avoiding the situation where the noise affects the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic perspective view of the overall structure of the present utility model.

[0016] Figure 2 is a schematic front sectional view of the present utility model.

[0017] Figure 3 is the present utility model Figure 2 partial enlarged schematic view of part A in.

[0018] Figure 4 is a schematic perspective view of a part of the present utility model.

[0019] In the figure: 1, tail pipe; 2, fixing frame; 3, sound-absorbing plate; 4, mounting member; 401, fixing block; 402, limiting hole; 403, pressing plate; 404, limiting column; 5, positioning hole; 6, fixing member; 601, nut; 602, bolt; 7, connection hole; 8, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides as Figures 1-4An exhaust tailpipe with a noise reduction function as shown includes a tailpipe 1. Sound-absorbing components for fixing noise reduction are provided at both the top and bottom of the tailpipe 1. The sound-absorbing components include a plurality of fixing frames 2 respectively sleeved on the top and bottom of the tailpipe 1. A sound-absorbing board 3 for sound absorption is arranged inside the fixing frame 2. An installation part 4 for fixing the position of the fixing frame 2 is provided at the connection between the fixing frame 2 and the tailpipe 1. Positioning holes 5 are symmetrically opened on both sides of the fixing frame 2. The installation part 4 is arranged inside the positioning holes 5. The horizontal longitudinal section of the fixing frame 2 is set as a semi-circular ring.

[0022] It should be noted that the provided exhaust tailpipe 1 is a part of the vehicle exhaust system and is responsible for discharging the exhaust gas generated by the engine outside the vehicle. The number of the provided fixing frames 2 is two, and the horizontal longitudinal sections of the two fixing frames 2 are both semi-circular rings. During use, the tailpipe 1 is wrapped by the two fixing frames 2. The sound-absorbing board 3 is fixedly connected inside the fixing frame 2 by bonding or other means. The contact surface between the sound-absorbing board 3 and the tailpipe 1 is adapted to the shape of the tailpipe 1 and is used for fitting between the sound-absorbing board 3 and the tailpipe 1 during use. The material of the provided sound-absorbing board 3 can be fiberglass. The fiberglass board has good sound absorption performance and high temperature resistance, enabling it to effectively reduce noise in a high-temperature environment.

[0023] Specifically, the installation part 4 includes a fixing block 401 fixedly connected between the front and rear inner walls of the positioning hole 5. A pressing plate 403 is arranged on one side of the fixing block 401. A limiting part for restricting the movement of the fixing block 401 is provided at the connection between the fixing block 401 and the pressing plate 403. The limiting part includes a limiting hole 402 opened in the middle of the fixing block 401. A limiting column 404 is fixedly connected to one side of the pressing plate 403. The limiting column 404 is inserted and connected inside the limiting hole 402. A fixing part 6 for fixing the position of the pressing plate 403 is arranged on one side of the tailpipe 1. The pressing plate 403 is inserted and connected inside the positioning hole 5.

[0024] It should be noted that the provided fixing block 401 is fixed inside the positioning hole 5 and is fixedly connected to the fixing frame 2 through the positioning hole 5. When it is necessary to fix the position of the fixing frame 2, the position of the fixing block 401 is adjusted to complete the fixing of the position of the fixing frame 2; there are two limiting columns 404 arranged on one side of the pressing plate 403, which are respectively inserted into the limiting holes 402 on the two fixing blocks 401 during use. Through the pulling of the limiting columns 404, the two fixing blocks 401 cannot move randomly on one side of the pressing plate 403.

[0025] Further, when it is necessary to fix the position of the fixing frame 2, first sleuth the fixing frame 2 on the outer wall of the tail pipe 1, align the positioning holes 5 on the two fixing frames 2, align the fixing blocks 401 on the two fixing frames 2, and insert the pressing plate 403 into the positioning holes 5, so that the limiting columns 404 on one side of the pressing plate 403 respectively penetrate into the limiting holes 402 on the two fixing blocks 401, and fix the pressing plate 403 and the tail pipe 1 through the fixing member 6, so that the fixing block 401 is clamped between the pressing plate 403 and the tail pipe 1, thereby restricting the movement of the fixing block 401 by clamping, and fixing the position of the fixing frame 2 by the fixing block 401 with restricted movement.

[0026] Specifically, a through hole 8 is opened in the middle of the pressing plate 403. The fixing member 6 includes a bolt 602 inserted and connected inside the through hole 8. A plurality of nuts 601 are symmetrically and fixedly connected to both sides of the tail pipe 1. The end of the bolt 602 is threadedly inserted into the middle of the nut 601. A connection hole 7 is opened on one side of the fixing block 401, and the nut 601 is inserted and connected inside the connection hole 7.

[0027] It should be noted that the set nut 601 is fixed on the tail pipe 1 by welding or other fixing methods. The connection hole 7 opened on the fixing block 401 is used for the nut 601 to pass through, so as to avoid the situation that when installing the fixing frame 2, the fixing block 401 is blocked by the nut 601, resulting in the fixing frame 2 and the sound-absorbing plate 3 not being able to fit with the tail pipe 1. When installing the fixing frame 2, the nut 601 passes through the connection hole 7 and into the inside of the fixing block 401; the opened through hole 8 is used for the bolt 602 to pass through. The area of the horizontal longitudinal section of the through hole 8 is larger than the area of the horizontal longitudinal section of the bolt 602 screw rod, but smaller than the horizontal longitudinal area of the bolt 602 screw head, so that the screw rod of the bolt 602 can pass through the through hole 8, but the screw head cannot pass through the through hole 8.

[0028] Further, during use, by rotating the bolt 602, its screw rod passes through the through hole 8 and is inserted into the nut 601, and the bolt 602 is continuously screwed, moving the bolt 602 towards the side of the nut 601, and squeezing the pressing plate 403 towards the side of the fixing block 401 by the screw head of the bolt 602, thereby fixing the position of the pressing plate 403 by the bolt 602; when it is necessary to disassemble the fixing frame 2, screw the bolt 602 out of the nut 601, thereby releasing the restriction on the pressing plate 403, taking out the pressing plate 403 from the inside of the positioning hole 5, and moving the pressing plate 403 to remove the limiting column 404 on one side of it from restricting the movement of the fixing frame 2 and disassembling it from the tail pipe 1.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. 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. An exhaust tailpipe with a noise reduction function, comprising a tailpipe (1), characterized in that, Sound-absorbing components for fixing noise reduction are provided at both the top and bottom of the tail pipe (1). The sound-absorbing components include a plurality of fixing frames (2) respectively sleeved on the top and bottom of the tail pipe (1). A sound-absorbing board (3) for sound absorption is arranged inside the fixing frame (2). An installation part (4) for fixing the position of the fixing frame (2) is arranged at the connection between the fixing frame (2) and the tail pipe (1). Positioning holes (5) are symmetrically formed on both sides of the fixing frame (2), and the installation part (4) is arranged inside the positioning holes (5).

2. The exhaust tailpipe with noise reduction function according to claim 1, characterized in that, The horizontal longitudinal section of the fixing frame (2) is set as a semi-circular ring.

3. The exhaust tail pipe with a noise reduction function according to claim 1, wherein The installation part (4) includes a fixing block (401) fixedly connected between the inner walls of the front and back of the positioning hole (5). A pressing plate (403) is arranged on one side of the fixing block (401). A limiting part for restricting the movement of the fixing block (401) is arranged at the connection between the fixing block (401) and the pressing plate (403).

4. The exhaust tail pipe with a noise reduction function according to claim 3, characterized in that, The limiting part includes a limiting hole (402) formed in the middle of the fixing block (401). A limiting column (404) is fixedly connected to one side of the pressing plate (403). The limiting column (404) is inserted and connected inside the limiting hole (402). A fixing part (6) for fixing the position of the pressing plate (403) is arranged on one side of the tail pipe (1).

5. An exhaust tailpipe with a noise reduction function according to claim 1, characterized in that, The pressing plate (403) is inserted and connected inside the positioning hole (5).

6. The exhaust tail pipe with noise reduction function according to claim 4, characterized in that, A through hole (8) is formed in the middle of the pressing plate (403). The fixing part (6) includes a bolt (602) inserted and connected inside the through hole (8).

7. The exhaust tail pipe with a noise reduction function according to claim 6, characterized in that, A plurality of nuts (601) are symmetrically and fixedly connected to both sides of the tail pipe (1). The end of the bolt (602) is threadedly inserted and connected to the middle of the nut (601).

8. The exhaust tail pipe with a noise reduction function according to claim 1, characterized in that, A connection hole (7) is formed on one side of the fixing block (401), and the nut (601) is inserted and connected inside the connection hole (7).

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