Automobile corrugated pipe connecting device convenient to overhaul
By incorporating threaded connections and fixing bolts at the corrugated pipe joints, the problems of unstable corrugated pipe connections and inconvenient maintenance are solved, achieving both a stable connection and easy disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南京诗兰姆汽车零部件有限公司
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-05
AI Technical Summary
The existing automotive bellows connection structure is not stable enough, making maintenance inconvenient and disassembly difficult.
The design includes a first connecting component and a second fixing component. The bellows is securely connected by threaded connection and fixing bolts, and is equipped with a sealing connecting ring for easy disassembly and maintenance.
This achieves stability and sealing of the bellows connection, and improves the convenience of maintenance and disassembly efficiency.
Smart Images

Figure CN224201311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated pipe technology, specifically to an automotive corrugated pipe connection device that is easy to maintain. Background Technology
[0002] With the development of the automotive industry, the performance of car engines has continuously improved, resulting in a corresponding increase in the volume and temperature of exhaust gases. To ensure the efficient and stable operation of the exhaust system, a component is needed that can connect the exhaust pipe and muffler and withstand high temperatures and corrosion. The automotive bellows was developed to address this need. It not only effectively connects the various parts of the exhaust system but also absorbs vibrations, reduces noise, and improves passenger comfort. Modern automobiles, especially internal combustion engine vehicles and electric vehicles, have increasingly complex thermal management systems. The application of new technologies such as engine downsizing, turbocharging, and exhaust gas recirculation (EGR) systems has placed higher demands on thermal management systems. As an important component of the thermal management system, the automotive bellows can flexibly adapt to various complex piping layouts, ensuring the smooth flow of fluids such as coolant and oil.
[0003] Automotive bellows effectively connect engine exhaust manifolds and mufflers in the exhaust system, integrating the entire system and ensuring that exhaust gases can be smoothly discharged from the engine and undergo subsequent treatment. Its corrugated shape and flexibility can accommodate installation errors between different components and vibrations and displacements during vehicle operation, guaranteeing a tight and stable connection, facilitating installation, and extending the service life of the exhaust system.
[0004] However, the current corrugated pipe connection structure is relatively simple, and the connection between the two sets of corrugated pipes is not stable and firm enough. Moreover, the corrugated pipes are not easy to disassemble during inspection and maintenance. Therefore, there is an urgent need for an automotive corrugated pipe connection device that is easy to maintain and has a more secure fixed connection between pipes and is convenient for pipe inspection and disassembly. Utility Model Content
[0005] The purpose of this invention is to provide an automotive bellows connection device that is easy to inspect and repair, thereby solving the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive bellows connection device that is easy to maintain, comprising: a first connection component fixedly connected to the right side of the bellows for pipe connection, wherein two sets of bellows are sealed together by a first fixing component and a second fixing component.
[0007] Preferably, the first connecting component includes an inner sleeve pipe, and four sets of threaded connecting arc plates are fixedly connected to the outer side of the inner sleeve pipe. An arc plate fixing sleeve is circumferentially connected to the outer side of the threaded connecting arc plates. By setting the first connecting component, the connection of the bellows is more convenient, the disassembly and maintenance process is more convenient, and the maintenance effect of the device is improved.
[0008] Preferably, the outer side of the threaded connecting arc plate is provided with a threaded connecting structure, the arc plate fixing sleeve is provided with a threaded connecting groove that matches the threaded connecting arc plate, and the corrugated pipe connection port is sleeved between the inner sleeve pipe and the threaded connecting arc plate, providing a basis for quick disassembly and maintenance of the pipeline.
[0009] Preferably, the first fixing component includes a second connecting component, and a first fixing ring is fixedly connected to the right side of the second connecting component. The first fixing ring is fixedly connected to the second fixing component by six sets of fixing bolts. A sealing connecting ring is provided on the right side of the first fixing ring. By providing the first fixing component, the first fixing component can cooperate with the second fixing component to achieve a firm seal between the two sets of bellows, making the device connection more secure and the sealing effect better.
[0010] Preferably, the structure of the second connecting component is the same as that of the first connecting component. The first fixing ring has a bolt fixing groove that cooperates with the fixing bolt, and the first fixing ring has a sealing groove that cooperates with the sealing connecting ring, providing a basis for the first fixing component to cooperate with the second fixing component for connection.
[0011] Preferably, the second fixing component includes a third connecting component, and a second fixing ring is fixedly connected to the left side of the third connecting component. By providing the second fixing component, a foundation is provided for the connection and fixing of the first fixing component.
[0012] Preferably, the third connecting component has the same structure as the first connecting component. The second fixing ring has a bolt fixing groove for cooperating with the fixing bolt, and the second fixing ring has a sealing groove for cooperating with the sealing connecting ring, providing a basis for the connection and use of the fixing bolt and the sealing connecting ring.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the first connecting component, the connection of the bellows is more convenient, the disassembly and maintenance process is more convenient, and the maintenance effect of the device is improved. By setting the first fixing component, the first fixing component can cooperate with the second fixing component to achieve a firm seal between the two sets of bellows, making the device connection more secure and the sealing effect better. By setting the second fixing component, a foundation is provided for the connection and fixation of the first fixing component. Attached Figure Description
[0014] Figure 1This is a schematic diagram of the overall structure of the left inclined surface of the automotive bellows connection device, which is easy to inspect and repair according to this utility model.
[0015] Figure 2 This is a schematic diagram of the overall structure of the right-side inclined surface of the automotive bellows connection device, which is easy to inspect and repair according to this utility model.
[0016] Figure 3 This is a schematic diagram of the pipe connection component in an automotive bellows connection device that is easy to inspect and maintain, according to this utility model.
[0017] Figure 4 This is a schematic diagram of the structure of the first fixing component in an automotive bellows connection device that is easy to inspect and maintain according to this utility model;
[0018] Figure 5 This is a schematic diagram of the structure of the second fixing component in an automotive bellows connection device that is easy to inspect and maintain, according to this utility model.
[0019] In the figure: 1. Corrugated pipe; 2. First connecting assembly; 21. Inner sleeve pipe; 22. Threaded connecting arc plate; 23. Arc plate fixing sleeve; 3. First fixing assembly; 31. Second connecting assembly; 32. First fixing ring; 33. Fixing bolt; 34. Sealing connecting ring; 4. Second fixing assembly; 41. Third connecting assembly; 42. Second fixing ring. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1 and Figure 2 A convenient automotive bellows connection device includes: a first connection component 2 fixedly connected to the right side of the bellows 1 for pipe connection, and two sets of bellows 1 are sealed together by a first fixing component 3 and a second fixing component 4.
[0022] Implementation 1: Please refer to Figures 1 to 3To facilitate the disassembly and maintenance of the corrugated pipe 1, the first connecting component 2 includes an inner sleeve pipe 21. Four sets of threaded connecting arc plates 22 are fixedly connected to the outer side of the inner sleeve pipe 21. An arc plate fixing sleeve 23 is circumferentially connected to the outer side of the threaded connecting arc plate 22. By setting the first connecting component 2, the connection of the corrugated pipe 1 is made more convenient, and the disassembly and maintenance process is more convenient. The maintenance effect of the device is improved. The outer side of the threaded connecting arc plate 22 is provided with a threaded connection structure. The arc plate fixing sleeve 23 has a threaded connection groove that matches the threaded connecting arc plate 22. The connection port of the corrugated pipe 1 is sleeved between the inner sleeve pipe 21 and the threaded connecting arc plate 22, providing a basis for the quick disassembly and maintenance of the pipeline.
[0023] Implementation 2: Please refer to Figure 1 , Figure 4 and Figure 5 To ensure a more secure connection between the two sets of bellows 1, the first fixing component 3 includes a second connecting component 31. A first fixing ring 32 is fixedly connected to the right side of the second connecting component 31. The first fixing ring 32 is fixedly connected to the second fixing component 4 by six sets of fixing bolts 33. A sealing connecting ring 34 is provided on the right side of the first fixing ring 32. By providing the first fixing component 3, it can cooperate with the second fixing component 4 to achieve a secure seal between the two sets of bellows 1, making the connection of the device more secure and the sealing effect better. The structure of the second connecting component 31 is the same as that of the first connecting component 2. The first fixing ring 32 has a fixing groove for the fixing bolts 33 to cooperate with it. The first fixing ring 32 has a sealing groove that mates with the sealing connecting ring 34, providing a basis for the connection of the first fixing component 3 with the second fixing component 4. The second fixing component 4 includes a third connecting component 41, with the second fixing ring 42 fixedly connected to the left side of the third connecting component 41. The second fixing component 4 provides a basis for the connection and fixation of the first fixing component 3. The structure of the third connecting component 41 is the same as that of the first connecting component 2. The second fixing ring 42 has a bolt fixing groove that mates with the fixing bolt 33 and a sealing groove that mates with the sealing connecting ring 34, providing a basis for the connection and use of the fixing bolt 33 and the sealing connecting ring 34.
[0024] Working principle: When the device is needed, the two sets of bellows 1 are sealed and connected by the first fixing component 3 and the second fixing component 4 under the fixing bolt 33. The two ends of the two sets of bellows 1 are fixed by the first connecting component 2. The connection port of the bellows 1 is inserted between the inner sleeve pipe 21 and the threaded connecting arc plate 22. By turning the arc plate fixing sleeve 23, the connection port of the bellows 1 is fixed between the inner sleeve pipe 21 and the threaded connecting arc plate 22. Then the first connecting component 2 is fixed to the connection port of the car. When maintenance is needed, the bellows 1 can be removed for inspection by turning the first connecting component 2, the second connecting component 31, and the third connecting component 41. It is very convenient.
[0025] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A convenient automotive bellows connection device, characterized in that, include: A first connecting component (2) is fixedly connected to the right side of the corrugated pipe (1) for pipe connection, and the two sets of corrugated pipes (1) are sealed together by a first fixing component (3) and a second fixing component (4).
2. The automotive bellows connection device for easy maintenance according to claim 1, characterized in that: The first connecting component (2) includes an inner sleeve tube (21), and four sets of threaded connecting arc plates (22) are fixedly connected to the outer side of the inner sleeve tube (21). An arc plate fixing sleeve (23) is circumferentially connected to the outer side of the threaded connecting arc plate (22).
3. The automotive bellows connection device for easy maintenance according to claim 2, characterized in that: The threaded connection arc plate (22) is provided with a threaded connection structure on the outside. The arc plate fixing sleeve (23) is provided with a threaded connection groove that matches the threaded connection arc plate (22). The corrugated pipe (1) connection port is sleeved between the inner sleeve pipe (21) and the threaded connection arc plate (22).
4. The automotive bellows connection device for easy maintenance according to claim 1, characterized in that: The first fixing component (3) includes a second connecting component (31). A first fixing ring (32) is fixedly connected to the right side of the second connecting component (31). The first fixing ring (32) is fixedly connected to the second fixing component (4) by six sets of fixing bolts (33). A sealing connecting ring (34) is provided on the right side of the first fixing ring (32).
5. The automotive bellows connection device for easy maintenance according to claim 4, characterized in that: The second connecting component (31) has the same structure as the first connecting component (2). The first fixing ring (32) has a fixing groove for fixing bolts (33) and a sealing groove for sealing connecting rings (34).
6. The automotive bellows connection device for easy maintenance according to claim 1, characterized in that: The second fixing component (4) includes a third connecting component (41), on which a second fixing ring (42) is fixedly connected on the left side.
7. The automotive bellows connection device for easy maintenance according to claim 6, characterized in that: The third connecting component (41) has the same structure as the first connecting component (2). The second fixing ring (42) has a bolt fixing groove that cooperates with the fixing bolt (33), and the second fixing ring (42) has a sealing groove that cooperates with the sealing connecting ring (34).