An exhaust tailpipe

Abstract

This utility model relates to the field of exhaust tailpipe technology and discloses an exhaust tailpipe, including an exhaust pipe and a waterproof structure located inside the exhaust pipe. The exhaust pipe includes an exhaust pipe body and an exhaust pipe tail end connected in sequence. A concave section with a rectangular longitudinal section is formed on the exhaust pipe body. An accommodating space is formed between the concave section and the outer side of the exhaust pipe body. The cavity inside the concave section forms a waterproof channel. A water-blocking component is provided on the side of the waterproof channel away from the exhaust pipe tail end. The water-blocking component includes a connecting rod set at the top of the waterproof channel. A baffle is rotatably connected to the connecting rod. A limiting block is provided on the bottom surface of the waterproof channel, and the limiting block provides support for the baffle. When the vehicle is in the off state, the waterproof channel is closed, and external water cannot enter the exhaust pipe, preventing water from flowing into the exhaust pipe from the exhaust outlet and damaging the muffler and exhaust gas treatment device inside the exhaust tailpipe.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust tailpipe technology, and specifically relates to an exhaust tailpipe. Background Technology

[0002] The exhaust tailpipe is a part of the car engine exhaust system, used to safely guide the exhaust gases produced by engine combustion to the rear of the vehicle and discharge them, preventing exhaust gases from entering the passenger compartment, while also reducing noise and minimizing exhaust pollution to the environment.

[0003] In extreme rainstorms, the water level on the road surface rises, especially when the vehicle is turned off. Water can flow into the exhaust pipe from the exhaust outlet, damaging the muffler and exhaust treatment device inside the exhaust pipe. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an exhaust tailpipe to solve the technical problem in the prior art where water flows into the tailpipe and damages it when the engine is off.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An exhaust tailpipe includes an exhaust pipe and a waterproof structure located inside the exhaust pipe. The exhaust pipe includes an exhaust pipe body and an exhaust pipe tail end connected sequentially. A concave section with a rectangular longitudinal section is formed on the exhaust pipe body. An accommodating space is formed between the concave section and the outer side of the exhaust pipe body. The cavity inside the concave section forms a waterproof channel. A water-blocking component is provided on the side of the waterproof channel away from the exhaust pipe tail end. The water-blocking component includes a connecting rod disposed at the top of the waterproof channel. A baffle is rotatably connected to the connecting rod. The top surface of the baffle is arc-shaped and adapted to the outer side of the connecting rod. A limiting block is provided on the bottom surface of the waterproof channel to support the baffle. A baffle support component is provided on the inner side of the baffle.

[0007] Furthermore, an arc-shaped cover is provided on the outside of the accommodating space, and the outer side of the arc-shaped cover overlaps with the outer side of the exhaust pipe body;

[0008] Furthermore, the axial direction of the connecting rod is perpendicular to the axial direction of the exhaust pipe body, and the outer side of the connecting rod is in close contact with the top wall of the waterproof channel, that is, the contact point between the two is in a sealed state.

[0009] Furthermore, an annular groove is opened at the middle position of the connecting rod body, and a connecting sleeve is provided at the top of the baffle. The connecting sleeve is fitted around the annular groove, the inner diameter of the connecting sleeve is the same as the inner diameter of the annular groove, the outer diameter of the connecting sleeve is the same as the diameter of the connecting rod, and the length of the connecting sleeve is the same as the length of the annular groove.

[0010] Furthermore, the baffle support assembly includes a limiting groove opened at the top of the concave section. The limiting groove is located inside the connecting rod. The connection between the waterproof channel and the receiving space is achieved through the limiting groove. A rotating shaft is provided in the center of the limiting groove. The extension direction of the rotating shaft is consistent with the extension direction of the limiting groove. A bushing of equal length is fitted around the rotating shaft. The outer side of the bushing contacts the groove wall of the limiting groove.

[0011] Furthermore, the baffle support assembly also includes an "L"-shaped strut fixedly connected to the outer side of the bushing. The strut is located inside the waterproof channel, and the axis of the short arm of the strut intersects with the axis of the rotating shaft. The short arm increases the distance between the long arm of the strut and the connecting sleeve, thereby preventing the long arm of the strut from contacting and abutting against the connecting sleeve during rotation.

[0012] Furthermore, a shaft hole is provided on the free end of the long arm of the strut, and a wheel axle is fixedly connected in the shaft hole. Rollers are rotatably connected to both ends of the wheel axle, and the rollers are in contact with the inner plate surface of the baffle.

[0013] Furthermore, a rotating plate is fixedly connected to the outer side of the bushing. The rotating plate is located in the accommodating space, and a support plate is provided in the accommodating space. The support plate is located outside the limiting groove. There is a gap between the support plate and the outer side of the concave section. An airbag is provided above the support plate. When the vehicle is turned off, the airbag and the rotating plate are in a non-contact state.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) Compared with the prior art, by setting up a water-blocking component, when the vehicle is in operation, exhaust gas is continuously generated. Under the push of air pressure, the baffle rotates counterclockwise around the connecting rod, thereby opening the waterproof channel and allowing the exhaust gas to be discharged smoothly from the exhaust pipe; when the vehicle is off, the baffle returns to the vertical position and abuts against the limiting block, thereby closing the waterproof channel and preventing external water from entering the exhaust pipe.

[0016] (2) By setting up a baffle support assembly, when the vehicle is in operation, the exhaust gas is discharged through the exhaust pipe. As the exhaust gas carries a lot of heat, the temperature of the exhaust pipe rises, the airbag expands due to the heat, and the airbag deforms on the side facing the rotating plate. The deformed airbag pushes the rotating plate and bushing to rotate counterclockwise around the rotating shaft. At the same time, the support rod on the other side rotates counterclockwise, thereby forming a relatively stable support force on the baffle, so that the baffle is kept at a relatively constant inclination, avoiding the impact on the air pressure in the exhaust pipe and improving the smoothness of exhaust gas discharge. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0018] Figure 1This is a schematic diagram of the exhaust tailpipe in Embodiment 1 of this utility model;

[0019] Figure 2 This is a cross-sectional view of the exhaust tailpipe in Embodiment 1 of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view at point A1;

[0021] Figure 4 for Figure 3 Enlarged view at point A2;

[0022] Figure 5 This is a schematic diagram of the connecting rod in Embodiment 1 of this utility model;

[0023] Figure 6 for Figure 3 Enlarged view of section A3 in the middle.

[0024] The following labels are shown in the attached diagram:

[0025] Exhaust pipe 1, exhaust pipe body 101, exhaust pipe tail end 102, concave section 103, arc-shaped cover plate 104, waterproof structure 2, connecting rod 201, annular groove 202, baffle 203, connecting sleeve 204, limiting block 205, limiting groove 206, rotating shaft 207, bushing 208, support rod 209, roller 211, rotating plate 212, support plate 213, airbag 214. Detailed Implementation

[0026] Example 1, specifically as follows Figures 1-6 As shown.

[0027] An exhaust tailpipe includes an exhaust pipe 1 and a waterproof structure 2 located inside the exhaust pipe 1.

[0028] like Figure 1 As shown, the exhaust pipe 1 includes an exhaust pipe body 101 and an exhaust pipe tail end 102 connected in sequence. The inner diameter of the exhaust pipe tail end 102 is larger than the inner diameter of the exhaust pipe body 101. The exhaust outlet of the exhaust pipe tail end 102 is obliquely cut, and the opening of the oblique cut faces the road surface. When the vehicle is driving, it helps to guide rainwater, melted snow water or road surface water that may splash into the exhaust pipe out.

[0029] The exhaust pipe body 101 has a recessed section 103 with a rectangular longitudinal section. Four independent receiving spaces are formed between the recessed section 103 and the outer side of the exhaust pipe body 101. The longitudinal section of the receiving space is arc-shaped. An arc-shaped cover plate 104 is provided on the outer side of the receiving space. The two ends of the arc-shaped cover plate 104 are welded and fixed to the two ends of the receiving space respectively. The outer side of the arc-shaped cover plate 104 coincides with the outer side of the exhaust pipe body 101, thereby ensuring the integrity and continuity of the external shape of the exhaust pipe body 101.

[0030] The rectangular cavity inside the concave section 103 forms a waterproof channel. A water-blocking component is provided on the side of the waterproof channel away from the exhaust pipe tail end 102, which enables the waterproof channel to be opened and closed. The water-blocking component includes a connecting rod 201 located at the top of the waterproof channel. The axis of the connecting rod 201 is perpendicular to the axis of the exhaust pipe body 101. Both ends of the connecting rod 201 are welded and fixed to the inner walls of the two sides of the waterproof channel. It is important to emphasize that the outer side of the connecting rod 201 is in close contact with the top wall of the waterproof channel, that is, the contact point between the two is in a sealed state. A wedge-shaped leak-proof strip is also provided between the connecting rod 201 and the top wall of the waterproof channel. The leak-proof strip is located on both sides of the connecting rod 201 and is welded and fixed to the top wall of the waterproof channel. The leak-proof strip further enhances the sealing between the connecting rod 201 and the top wall of the waterproof channel, preventing water leakage.

[0031] A baffle 203 is rotatably connected to the connecting rod 201. Specifically, an annular groove 202 is formed in the middle of the connecting rod 201. A connecting sleeve 204 is provided on the top of the baffle 203. The connecting sleeve 204 is welded and fixed to the baffle 203. The connecting sleeve 204 is fitted around the annular groove 202. The inner diameter of the connecting sleeve 204 is the same as the inner diameter of the annular groove 202, and the outer diameter of the connecting sleeve 204 is the same as the diameter of the connecting rod 201. The length of the connecting sleeve 204 is the same as the length of the annular groove 202. It is worth explaining in detail that the top surface of the baffle 203 is arc-shaped and adapts to the outer surface of the connecting rod 201. On the one hand, this can effectively increase the contact area between the baffle 203 and the connecting sleeve 204, thereby improving the stability of their connection. On the other hand, it can also increase the contact area between the baffle 203 and the connecting rod 201, ensuring that the two are in close contact when the baffle 203 rotates relative to the connecting rod 201.

[0032] Both sides of the baffle 203 are in contact with the two side walls of the waterproof channel. The bottom surface of the waterproof channel is provided with a limiting block 205. When the water is blocked, the baffle 203 is vertical and the bottom surface of the baffle 203 is in contact with the bottom surface of the waterproof channel. The side of the baffle 203 away from the tail end 102 of the exhaust pipe abuts against the limiting block 205. The limiting block 205 provides support for the baffle 203 and prevents the baffle 203 from continuing to rotate clockwise under water pressure.

[0033] When in use, when the vehicle is in operation, exhaust gas is continuously generated. Under the pressure of the air, the baffle 203 rotates counterclockwise around the connecting rod 201, thereby opening the waterproof channel and allowing the exhaust gas to be discharged smoothly from the exhaust pipe 1. When the vehicle is turned off, the baffle 203 returns to the vertical position and abuts against the limiting block 205, thereby closing the waterproof channel and preventing external water from entering the exhaust pipe 1. This prevents water from flowing into the exhaust pipe from the exhaust outlet and damaging the muffler and exhaust gas treatment device inside the exhaust pipe.

[0034] However, the amount of exhaust gas produced changes instantaneously, meaning that the baffle is always in a reciprocating rotation state, which not only affects the air pressure in the exhaust pipe 1, but also affects the smoothness of exhaust gas emission to a certain extent.

[0035] Therefore, a baffle support assembly is provided on the inner side of the baffle 203, such as... Figure 4 As shown, the baffle support assembly includes a limiting groove 206 formed at the top of the concave section 103. The limiting groove 206 is located inside the connecting rod 201, and the connection between the waterproof channel and the receiving space is achieved through the limiting groove 206. A rotating shaft 207 is provided at the center of the limiting groove 206. The extending direction of the rotating shaft 207 is consistent with the extending direction of the limiting groove 206. A cylindrical bushing 208 of equal length is sleeved around the rotating shaft 207, and the outer surface of the bushing 208 contacts the groove wall of the limiting groove 206.

[0036] The baffle support assembly also includes an "L"-shaped support rod 209 welded and fixed to the outer side of the bushing 208. The support rod 209 is located inside the waterproof channel. The axis of the short arm of the support rod 209 intersects the axis of the rotating shaft 207. The short arm increases the distance between the long arm of the support rod 209 and the connecting sleeve 204, thereby preventing the long arm of the support rod 209 from contacting and abutting against the connecting sleeve 204 during rotation. A shaft hole is provided on the free end of the long arm of the support rod 209. A wheel axle is fixedly connected in the shaft hole. Rollers 211 are rotatably connected to both ends of the wheel axle. The rollers 211 contact the inner plate surface of the baffle 203.

[0037] A rotating plate 212 is welded and fixed to the outer surface of the bushing 208. The rotating plate 212 is located within the accommodating space, and a support plate 213 is provided within the accommodating space. The support plate 213 is located outside the limiting groove 206, and there is a gap between the support plate 213 and the outer side of the concave section 103. An airbag 214 is provided above the support plate 213, and the airbag 214 is located between the support plate 213 and the arc-shaped cover plate 104. The end of the airbag 214 facing the tail end 102 of the exhaust pipe is glued and fixed to the end face of the concave section 103. When the vehicle is turned off, the airbag 214 and the rotating plate 212 are in a non-contact state.

[0038] When in use, when the vehicle is in operation, the exhaust gas is discharged through the exhaust pipe 1. Because the exhaust gas carries a lot of heat, the temperature of the exhaust pipe 1 rises, and the airbag 214 expands due to the heat. The airbag 214 deforms on the side facing the rotating plate 212. The deformed airbag 214 pushes the rotating plate 212 and the bushing 208 to rotate counterclockwise around the rotating shaft 207. At the same time, the support rod 209 on the other side rotates counterclockwise, thereby forming a relatively stable support force on the baffle 203, so that the baffle 203 maintains a relatively constant tilt angle, avoiding affecting the air pressure in the exhaust pipe 1 and improving the smoothness of exhaust gas discharge.

[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An exhaust tailpipe characterized in that, The device includes an exhaust pipe and a waterproof structure located inside the exhaust pipe. The exhaust pipe includes an exhaust pipe body and an exhaust pipe tail end connected in sequence. The exhaust pipe body has a concave section with a rectangular longitudinal section. A receiving space is formed between the concave section and the outer side of the exhaust pipe body. The cavity inside the concave section forms a waterproof channel. A water-blocking component is provided on the side of the waterproof channel away from the exhaust pipe tail end. The water-blocking component includes a connecting rod set at the top of the waterproof channel. A baffle is rotatably connected to the connecting rod. The top surface of the baffle is arc-shaped and fits the outer side of the connecting rod. A limiting block is provided on the bottom surface of the waterproof channel to support the baffle. A baffle support component is provided on the inner side of the baffle.

2. The exhaust tailpipe of claim 1, wherein, An arc-shaped cover is provided on the outside of the storage space, and the outer side of the arc-shaped cover overlaps with the outer side of the exhaust pipe body.

3. The exhaust tailpipe of claim 1, wherein, The axis of the connecting rod is perpendicular to the axis of the exhaust pipe body, and the outer side of the connecting rod is in close contact with the top wall of the waterproof channel, that is, the contact point between the two is in a sealed state.

4. The exhaust tailpipe of claim 3, wherein, A ring groove is cut in the middle of the connecting rod body, and a connecting sleeve is provided on the top of the baffle. The connecting sleeve is fitted around the ring groove. The inner diameter of the connecting sleeve is the same as the inner diameter of the ring groove, the outer diameter of the connecting sleeve is the same as the diameter of the connecting rod, and the length of the connecting sleeve is the same as the length of the ring groove.

5. The exhaust tailpipe of claim 1, wherein, The baffle support assembly includes a limiting groove opened at the top of the concave section. The limiting groove is located inside the connecting rod and connects the waterproof channel with the receiving space through the limiting groove. A rotating shaft is provided in the center of the limiting groove. The extension direction of the rotating shaft is consistent with the extension direction of the limiting groove. A bushing of equal length is fitted around the rotating shaft. The outer side of the bushing contacts the groove wall of the limiting groove.

6. The exhaust tailpipe of claim 5, wherein, The baffle support assembly also includes an "L"-shaped strut fixedly connected to the outer side of the bushing. The strut is located inside the waterproof channel. The axis of the short arm of the strut intersects the axis of the rotating shaft. The short arm increases the distance between the long arm of the strut and the connecting sleeve, thereby preventing the long arm of the strut from contacting and abutting against the connecting sleeve during rotation.

7. The exhaust tailpipe of claim 6, wherein, A shaft hole is provided on the free end of the long arm of the strut, and a wheel axle is fixedly connected in the shaft hole. Rollers are rotatably connected to both ends of the wheel axle, and the rollers are in contact with the inner plate surface of the baffle.

8. The exhaust tailpipe of claim 6, wherein, A rotating plate is also fixedly connected to the outer side of the bushing. The rotating plate is located in the accommodating space. A support plate is set in the accommodating space. The support plate is located outside the limiting groove. There is a gap between the support plate and the outer side of the concave section. An airbag is set above the support plate. When the vehicle is turned off, the airbag and the rotating plate are in a non-contact state.

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