Connecting structure of engine exhaust pipe
By installing rubber sealing rings and limiting rings in the engine exhaust pipe, the problem of exhaust pipe leakage is solved, gas sealing is achieved, engine parts are protected, maintenance costs are reduced, and convenience and flexibility are improved.
Patent Information
- Application Number
- CN202423254626.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-28
AI Technical Summary
Engine exhaust pipes may leak air during operation, causing more oxygen to come into contact with the engine interior, accelerating component oxidation, shortening engine lifespan, increasing maintenance costs, increasing fuel consumption, increasing vehicle operating costs, and reducing vehicle mileage.
By setting a rubber sealing ring, sealing ring one and sealing ring two are sealed through a fixed groove that matches the rubber sealing ring. The compression effect of the fixed ring prevents gas leakage. Combined with the design of the limit ring, the convenience and flexibility of the device are improved.
It effectively prevents gas leakage, protects internal engine parts, reduces maintenance costs, improves the convenience and flexibility of the device, and extends the service life of the equipment.
Smart Images
Figure CN223661951U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of exhaust pipe connection technology, and in particular relates to a connection structure for an engine exhaust pipe. Background Technology
[0002] The engine exhaust pipe is an important component of a car's exhaust system. Its function not only affects the normal operation of the vehicle but also involves environmental protection and noise control. The exhaust pipe generally includes a front exhaust pipe and a rear exhaust pipe, consisting of a header, a mid-section, and a tail section. The header is the exhaust manifold, the mid-section is a longer pipe on the chassis, and the tail section is near the rear bumper. The main function of the exhaust pipe is to expel the exhaust gases produced by the engine, reduce pressure, and ensure continuous vehicle operation.
[0003] However, air leakage from the engine exhaust pipe during operation may cause the engine interior to come into contact with more oxygen, thereby accelerating the oxidation process of parts. This may shorten the service life of the engine and other mechanical components, increase maintenance costs, and also cause some fuel to be discharged without being burned, resulting in increased fuel consumption. The extra fuel consumption will lead to a decrease in vehicle mileage. Utility Model Content
[0004] The purpose of this utility model is to provide a connection structure for an engine exhaust pipe. By setting a rubber sealing ring, sealing ring one and sealing ring two are sealed by a fixing groove that matches the rubber sealing ring. Due to the compression of the fixing ring, the problem of leakage in the existing exhaust pipe during operation, which may cause more oxygen to come into contact with the engine, thereby accelerating the oxidation process of parts, shortening the service life of the engine and other mechanical parts, and increasing maintenance costs, is solved. Exhaust pipe leakage may also cause some fuel to be discharged without combustion, resulting in increased fuel consumption.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a connection structure for an engine exhaust pipe, comprising a fixed cylinder, a connecting ring fixedly connected to the outer surface of the fixed cylinder, a connecting pipe fixedly connected to the inner wall of the connecting ring, a sealing ring fixedly fixed to the bottom of the connecting pipe, a fixing groove formed at the bottom of the sealing ring, a rubber sealing ring in contact with the inner wall of the fixing groove, a second sealing ring in contact with the bottom of the rubber sealing ring, a second fixing groove formed at the top of the second sealing ring, the second fixing groove being adapted to the rubber sealing ring, and a fixed ring in contact with the outer surface of the sealing ring. This utility model, by setting a fixing ring, specifically a rubber sealing ring, allows the sealing rings one and two to seal the device through the fixing groove adapted to the rubber sealing ring. Due to the compression of the fixing ring, air leakage is effectively prevented when gas is not completely discharged from the exhaust pipe, preventing internal engine parts from being oxidized by oxygen due to air leakage, thus protecting the engine and reducing maintenance costs.
[0007] Furthermore, an exhaust pipe is provided inside the fixed cylinder, and a rotating ring is in contact with the outer surface of the exhaust pipe. The outer surface of the rotating ring is threaded. A bent pipe is fixedly connected to the top of the exhaust pipe, and a limiting ring is fixedly connected to the inner wall of the fixed cylinder. The outer surface of the rotating ring is threadedly connected to the inner wall of the fixed cylinder. The threaded rotating ring can connect its outer surface to the inner wall of the fixed cylinder, making it more convenient for workers to install or disassemble, and improving the overall convenience of the device.
[0008] Furthermore, a limiting ring one is fixedly connected to the bottom of the rotating ring, and a limiting ring two is engaged with the bottom of the limiting ring one. A spring is fixedly connected to the bottom of the limiting ring two, and the bottom of the spring is fixedly connected to the top of the limiting ring. This utility model, by setting the limiting ring two, specifically by pressing down on the bent tube, causes the limiting ring two to move downward, thereby releasing the limiting ring two from its restriction. At this time, the operator can select the assembly direction by twisting the bent tube. After selection, the operator can release the tube to reset the device. This increases the flexibility of the device, facilitates installation and maintenance by the operator, improves the overall convenience of the device, and reduces the assembly difficulty.
[0009] Furthermore, a second fixing block is fixedly connected to the right side of the fixing ring, and a first fixing block is in contact with the back of the second fixing block. Both the second fixing block and the first fixing block have fixing holes on their front sides. A screw is in contact with the inner wall of the fixing hole, and a nut is threaded onto the outer surface of the screw. The front of the nut is in contact with the back of the first fixing block. The arrangement of the first fixing block and the second fixing block allows them to simultaneously drive the fixing ring to perform secondary fixing of the device's sealing area when they are fixed, thus protecting the safety of the equipment and extending its service life.
[0010] Furthermore, a connecting pipe is fixedly connected to the bottom of the second sealing ring, and an air inlet pipe is fixed to the bottom of the second connecting pipe. The outer surface of the second connecting pipe is in contact with the inner wall of the fixed ring. The fixing groove opened at the bottom of the second sealing ring is adapted to the rubber sealing ring to seal the device, prevent gas leakage, or allow oxygen to enter the device, thereby increasing the device's sealing performance.
[0011] Furthermore, the top of the fixed cylinder contacts the bottom of the rotating ring, the inside of the fixed cylinder contacts the outer surface of the first limiting ring, and the outer surface of the first connecting pipe contacts the inner wall of the fixed ring. The matching of the first limiting ring and the second limiting ring makes it easier for workers to assemble, improves their work efficiency, reduces their workload, and enhances the flexibility of the device.
[0012] This utility model has the following beneficial effects:
[0013] This utility model uses a fixed ring, specifically a rubber sealing ring, to seal the device by means of a fixed groove that fits the rubber sealing ring. Due to the compression of the fixed ring, it effectively prevents gas leakage that occurs when gas is not completely discharged from the exhaust pipe, thus preventing internal engine parts from being oxidized by oxygen due to gas leakage, protecting the engine and reducing maintenance costs.
[0014] This utility model incorporates a second limiting ring. Specifically, by pressing down on the bent tube, the limiting ring moves downward, releasing it from its restriction. At this point, the operator can select the assembly direction by twisting the bent tube. Once the selection is complete, releasing the tube resets the device. This increases the flexibility of the device, facilitates installation and maintenance, improves the overall convenience of the device, and reduces assembly difficulty.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of this utility model embodiment, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the fixed cylinder structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the limiting ring structure of the utility model;
[0019] Figure 3 For this utility model Figure 2 A magnified structural diagram of A in the middle;
[0020] Figure 4 This is a schematic diagram of the structure of the fixing block 2 of the utility model;
[0021] Figure 5 This is a schematic diagram of the sealing ring structure of this utility model.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] 1. Fixed cylinder; 11. Connecting ring; 12. Connecting pipe one; 2. Rotating ring; 21. Exhaust pipe; 211. Bend; 22. Restricting ring; 3. Limiting ring one; 31. Limiting ring two; 311. Spring; 4. Fixed ring; 41. Fixed block one; 42. Fixed block two; 43. Screw; 431. Nut; 5. Sealing ring one; 51. Rubber sealing ring; 52. Sealing ring two; 521. Connecting pipe two; 53. Intake pipe. Detailed Implementation
[0024] The technical solutions 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.
[0025] Please see Figure 1-5 As shown, this utility model is a connection structure for an engine exhaust pipe, including a fixed cylinder 1. A connecting ring 11 is fixedly connected to the outer surface of the fixed cylinder 1. A connecting pipe 12 is fixedly connected to the inner wall of the connecting ring 11. A sealing ring 5 is fixed to the bottom of the connecting pipe 12. A fixing groove 1 is opened at the bottom of the sealing ring 5. A rubber sealing ring 51 is in contact with the inner wall of the fixing groove 1. A sealing ring 2 52 is in contact with the bottom of the rubber sealing ring 51. A fixing groove 2 is opened at the top of the sealing ring 2 52. The fixing groove 2 is adapted to the rubber sealing ring 51. A fixing ring 4 is in contact with the outer surface of the sealing ring 5. This utility model seals the device by setting the fixing ring 4, specifically by setting the rubber sealing ring 51, so that the sealing ring 5 and the sealing ring 2 52 are sealed by the fixing groove adapted to the rubber sealing ring 51. Due to the compression of the fixing ring 4, it effectively prevents gas leakage when the gas is not completely discharged from the exhaust pipe, prevents the internal parts of the engine from being oxidized by oxygen due to gas leakage, protects the engine, and reduces maintenance costs.
[0026] An exhaust pipe 21 is provided inside the fixed cylinder 1. A rotating ring 2 is in contact with the outer surface of the exhaust pipe 21. The outer surface of the rotating ring 2 is threaded. A bent pipe 211 is fixedly connected to the top of the exhaust pipe 21. A limiting ring 22 is fixedly connected to the inner wall of the fixed cylinder 1. The outer surface of the rotating ring 2 is threadedly connected to the inner wall of the fixed cylinder 1.
[0027] A limiting ring 3 is fixedly connected to the bottom of the rotating ring 2. A second limiting ring 31 is engaged with the bottom of the first limiting ring 3. A spring 311 is fixedly connected to the bottom of the second limiting ring 31. The bottom of the spring 311 is fixedly connected to the top of the limiting ring 22. This utility model sets the second limiting ring 31. Specifically, by pressing down the bent tube 211, the second limiting ring 31 is driven to move downward, and the second limiting ring 31 is released from restriction. At this time, the operator can select the assembly direction by turning the bent tube 211. After selection, it can be released to reset. This increases the flexibility of the device, facilitates the installation and maintenance of the operator, improves the overall convenience of the device, and reduces the assembly difficulty.
[0028] A second fixing block 42 is fixedly connected to the right side of the fixing ring 4. A first fixing block 41 is in contact with the back of the second fixing block 42. Fixing holes are opened on the front of both the second fixing block 42 and the first fixing block 41. A screw 43 is in contact with the inner wall of the fixing hole. A nut 431 is threadedly connected to the outer surface of the screw 43. The front of the nut 431 is in contact with the back of the first fixing block 41.
[0029] The bottom of the sealing ring 2 52 is fixedly connected to the connecting pipe 2 521, the bottom of the connecting pipe 2 521 is fixed to the air inlet pipe 53, and the outer surface of the connecting pipe 2 521 is in contact with the inner wall of the fixing ring 4.
[0030] The top of the fixed cylinder 1 is in contact with the bottom of the rotating ring 2, the inside of the fixed cylinder 1 is in contact with the outer surface of the limiting ring 3, and the outer surface of the connecting pipe 12 is in contact with the inner wall of the fixed ring 4.
[0031] One specific application of this embodiment is as follows: Since the bottom of sealing ring 5 and the top of sealing ring 2 52 are provided with fixing grooves that match the rubber sealing ring 51, when both are simultaneously pressed against the rubber sealing ring 51, the pipeline can remain sealed while connected. Because the outer surfaces of sealing ring 5 and sealing ring 2 52 are in contact with fixing ring 4, the nut 431 is then tightened using fixing screw 43, causing fixing block 2 42 and fixing block 1 41 to approach each other until they are fixed by screw 43 and nut 431. This causes fixing ring 4 to press sealing ring 5, sealing ring 2 52, and rubber sealing ring 51 together, preventing rubber sealing ring 51 from falling off and preventing the risk of gas leakage when gas enters the intake pipe 53 and passes through connecting pipe 2 521, thus protecting the engine. To achieve the desired protective effect and reduce maintenance costs, when installing and connecting the exhaust pipe, the operator can press down on the bend 211 to move the second limiting ring 31 downwards, thereby releasing the limiting ring 31. At this time, the operator can select the assembly direction by turning the bend 211. After selection, the bend 211 can be released and reset under the action of the spring 311. The limiting ring 22 restricts the vertical movement of the exhaust pipe 21, preventing it from deviating during movement. When the second limiting ring 31 contacts the first limiting ring 3, the first limiting ring 3 can restrict the second limiting ring 31, increasing the flexibility of the device, facilitating installation and maintenance, improving the overall convenience of the device, and reducing assembly difficulty.
[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A connection structure for an engine exhaust pipe, comprising a fixed cylinder (1), wherein a connecting ring (11) is fixedly connected to the outer surface of the fixed cylinder (1), and a connecting pipe (12) is fixedly connected to the inner wall of the connecting ring (11), characterized in that: The bottom of the connecting pipe (12) is fixed with a sealing ring (5). The bottom of the sealing ring (5) is provided with a fixing groove. The inner wall of the fixing groove is in contact with a rubber sealing ring (51). The bottom of the rubber sealing ring (51) is in contact with a sealing ring (52). The top of the sealing ring (52) is provided with a fixing groove. The fixing groove is adapted to the rubber sealing ring (51). The outer surface of the sealing ring (5) is in contact with a fixing ring (4).
2. The connection structure of an engine exhaust pipe according to claim 1, characterized in that, The fixed cylinder (1) is provided with an exhaust pipe (21), and the outer surface of the exhaust pipe (21) is in contact with a rotating ring (2), and the outer surface of the rotating ring (2) is threaded.
3. The connection structure of an engine exhaust pipe according to claim 2, characterized in that, The top of the exhaust pipe (21) is fixedly connected to a bend (211), the inner wall of the fixed cylinder (1) is fixedly connected to a limiting ring (22), and the outer surface of the rotating ring (2) is threadedly connected to the inner wall of the fixed cylinder (1).
4. The connection structure of an engine exhaust pipe according to claim 3, characterized in that, The bottom of the rotating ring (2) is fixedly connected to a limiting ring one (3), the bottom of the limiting ring one (3) is engaged with a limiting ring two (31), the bottom of the limiting ring two (31) is fixedly connected to a spring (311), and the bottom of the spring (311) is fixedly connected to the top of the limiting ring (22).
5. The connection structure of an engine exhaust pipe according to claim 4, characterized in that, The fixing ring (4) is fixedly connected to the right side of the fixing block two (42), and the back of the fixing block two (42) is in contact with the fixing block one (41). The fixing blocks two (42) and the fixing blocks one (41) are both provided with fixing holes on the front.
6. The connection structure of an engine exhaust pipe according to claim 5, characterized in that, The inner wall of the fixing hole is in contact with a screw (43), and the outer surface of the screw (43) is threaded with a nut (431). The front of the nut (431) is in contact with the back of the fixing block (41).
7. The connection structure of an engine exhaust pipe according to claim 1, characterized in that, The bottom of the sealing ring 2 (52) is fixedly connected to the connecting pipe 2 (521), the bottom of the connecting pipe 2 (521) is fixed to the air inlet pipe (53), and the outer surface of the connecting pipe 2 (521) is in contact with the inner wall of the fixing ring (4).
8. The connection structure of an engine exhaust pipe according to claim 1, characterized in that, The top of the fixed cylinder (1) is in contact with the bottom of the rotating ring (2), the inside of the fixed cylinder (1) is in contact with the outer surface of the limiting ring (3), and the outer surface of the connecting pipe (12) is in contact with the inner wall of the fixed ring (4).