Automobile bellows with splicing structure

Abstract

The utility model belongs to mechanical engineering technical field, concretely relates to a kind of automobile bellows with splicing structure, including bellows body, bellows body surface connects plug-in pipe, plug-in pipe surface connects guide block, guide block surface is slidably connected to the surface of guide slot, and guide slot is opened in fixed pipe inner wall.The utility model, through the cooperation of plug-in pipe and fixed pipe connected in the both sides of bellows body and fixed pipe of screw connection on plug-in pipe, the connection of two sections of bellows body can be screwed, further can quickly fixed two sections of bellows body, to facilitate when maintaining can separately replace broken section's bellows body to reduce maintenance cost;In addition, the cooperation of guide block and guide slot can accurately butt joint two sections of bellows body, simultaneously utilize sealing washer to fill the gap between two sections of bellows body, avoid exhaust gas leakage in bellows body, also can avoid external dust erosion influence the service life of bellows body.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering technology, and specifically relates to an automotive bellows with a splicing structure. Background Technology

[0002] Automotive corrugated pipes are key flexible connectors in automotive piping systems, mainly used in engine intake and exhaust, cooling, fuel, and air conditioning lines. They primarily address displacement, vibration, and noise issues during vehicle operation through their expandable corrugated structure. The functions of automotive bellows include: compensating for displacement, absorbing changes in pipe position caused by vehicle bumps or component thermal expansion, and preventing pipe breakage due to tension; reducing vibration and noise by weakening the transmission of engine and chassis vibrations to the pipes, while reducing the noise of fluid flowing in the pipes and improving driving comfort; and protecting the pipes by reducing fatigue damage to the pipes caused by vibration and displacement, thus extending the service life of the entire pipe system. The choice of materials for automotive bellows needs to match the usage scenario. High-temperature and high-pressure intake and exhaust systems mostly use metal materials such as stainless steel, while low-temperature and low-pressure pipelines such as cooling and fuel lines often use plastic or rubber materials such as nylon and EPDM rubber. Different materials work together to ensure the stable operation of various pipeline systems in the car. Existing automotive exhaust bellows typically use a metal corrugated inner tube with a metal braided mesh sleeve. Both ends are usually connected to flanges at the inlet of the automotive exhaust manifold or muffler. However, the required length of exhaust systems varies significantly between different vehicle models, necessitating the production of automotive exhaust bellows of varying lengths. This increases production costs and factory inventory pressure. Furthermore, if a section of the pipe breaks or is damaged due to high temperature, corrosion, or vibration, the entire exhaust bellows needs to be replaced, further increasing maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide an automotive bellows with a splicing structure, aiming to solve the problem of existing automotive exhaust bellows with a metal corrugated inner tube and a metal braided mesh sleeve, whose two ends are generally connected to flanges and the inlet of the automotive exhaust manifold or exhaust muffler. However, the exhaust systems of different car models require different lengths, resulting in the need to produce automotive exhaust bellows of different lengths. The above method increases production costs and also increases the factory's inventory pressure. Furthermore, when a section of the pipe is broken or damaged due to high temperature, corrosion, or vibration, the entire exhaust bellows needs to be replaced, thus increasing maintenance costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a corrugated pipe for automobiles with a splicing structure, comprising a corrugated pipe body, a connector connected to the surface of the corrugated pipe body, a guide block connected to the surface of the connector, a guide block slidably connected to the surface of a guide groove, the guide groove being formed in the inner wall of a fixed pipe, a first threaded section on the surface of the fixed pipe, the first threaded section being threadedly connected to the surface of a first groove, the first groove being formed in the inner wall of a connecting pipe, a sealing ring being sleeved on the surface of the inner wall of the connecting pipe, the sealing ring being bonded to the surface of the connector, a second threaded section on the surface of the connector, the second threaded section being threadedly connected to the surface of a second groove, the second groove being formed in the inner wall of the connecting pipe, and a fixed pipe connected to the surface of the corrugated pipe body on the side away from the connector.

[0005] As a preferred embodiment of the automotive bellows with a splicing structure of this utility model, the guide groove is an "L"-shaped groove, the shape and size of which are adapted to the guide block.

[0006] As a preferred embodiment of the automotive bellows with a splicing structure of this utility model, the three sets of guide blocks are distributed in a ring at equal intervals on the surface of the insertion pipe, and the guide blocks are rectangular integral structures.

[0007] As a preferred embodiment of the automotive bellows with a splicing structure of this utility model, the sealing ring is a conical integral structure, the shape and size of which are adapted to the side of the fixed pipe surface near the guide groove.

[0008] As a preferred embodiment of the automotive bellows with a splicing structure of this utility model, the fixed pipe, the first threaded section, the first groove and the connecting pipe form a threaded connection structure.

[0009] As a preferred embodiment of the automotive corrugated pipe with splicing structure of this utility model, the connecting pipe is a conical integral structure, with a first groove and a second groove respectively opened on both sides of its inner wall near the opening end, and the shape and size of the first groove and the second groove are adapted to the first threaded section and the second threaded section.

[0010] Compared with the prior art, the beneficial effects of this utility model are: By connecting the insert pipe and the fixing pipe on both sides of the corrugated pipe body and threading the fixing pipe onto the insert pipe, the connection between the two sections of the corrugated pipe body can be threaded and fixed. This allows for quick fixing of the two sections of the corrugated pipe body, so that the damaged section can be replaced individually during maintenance, thus reducing maintenance costs. In addition, the cooperation between the guide block and the guide groove can precisely align the two sections of the corrugated pipe body, while the sealing ring fills the gap between the two sections of the corrugated pipe body, preventing the leakage of exhaust gas inside the corrugated pipe body and preventing external dust corrosion from affecting the service life of the corrugated pipe body. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model; Figure 4 This is a schematic diagram of the exploded front view of this utility model; Figure 5 This utility model Figure 3 Enlarged structural diagram of section A.

[0012] In the figure: 1. Corrugated pipe body; 2. Insertion pipe; 3. Guide block; 4. Guide groove; 5. Fixing pipe; 6. First threaded section; 7. First groove; 8. Connecting pipe; 9. Sealing ring; 10. Second threaded section; 11. Second groove. Detailed Implementation

[0013] 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.

[0014] Please see Figures 1-5 The present invention provides the following technical solution: a corrugated pipe for automobiles with a splicing structure, comprising a corrugated pipe body 1, a connector 2 connected to the surface of the corrugated pipe body 1, a guide block 3 connected to the surface of the connector 2, a guide block 3 slidably connected to the surface of a guide groove 4, a guide groove 4 being formed in the inner wall of a fixed pipe 5, a first threaded section 6 on the surface of the fixed pipe 5, a threaded connection of the first threaded section 6 to the surface of a first groove 7, a first groove 7 being formed in the inner wall of a connecting pipe 8, a sealing ring 9 sleeved on the surface of the inner wall of the connecting pipe 8, a sealing ring 9 being bonded to the surface of the connector 2, a second threaded section 10 on the surface of the connector 2, a threaded connection of the second threaded section 10 to the surface of a second groove 11, a second groove 11 being formed in the inner wall of the connecting pipe 8, and a fixed pipe 5 connected to the surface of the corrugated pipe body 1 on the side away from the connector 2.

[0015] Preferably, the guide groove 4 is an "L"-shaped groove, the shape and size of which are adapted to the guide block 3.

[0016] In practical use, when connecting, the guide blocks 3 connected to the surface of the insertion tube 2 abut against the guide grooves 4 opened in the inner wall of the fixed tube 5, and the insertion tube 2 is inserted into the inner wall of the fixed tube 5 until the guide blocks 3 abut against the end of the guide groove 4. Then rotate counterclockwise 30° so that the guide blocks 3 can abut against the end of the horizontal end of the guide groove 4.

[0017] Preferably, three sets of guide blocks 3 are distributed in a ring at equal intervals on the surface of the insertion tube 2, and the guide blocks 3 are rectangular integral structures.

[0018] In practical use, the guide blocks 3 connected to the surface of the insertion tube 2 abut against the guide grooves 4 opened on the inner wall of the fixed tube 5 until the guide blocks 3 abut against the end of the guide grooves 4, and then rotate counterclockwise by 30° so that the guide blocks 3 can abut against the end of the horizontal end of the guide grooves 4.

[0019] Preferably, the sealing ring 9 is a conical integral structure, and its shape and size are adapted to the side of the fixed tube 5 near the guide groove 4.

[0020] In practical use, the sealing ring 9 bonded to the surface of the insertion tube 2 abuts against the surface where the fixed tube 5 and the guide groove 4 intersect, thereby filling the gap between the two corrugated tube bodies 1.

[0021] Preferably, the fixed tube 5, the first threaded section 6, the first groove 7 and the connecting tube 8 form a threaded connection structure.

[0022] In practical use, after the insertion pipe 2 and the fixed pipe 5 between the two corrugated pipe bodies 1 are joined together, the connecting pipe 8, which is threaded onto the second threaded section 10 on the surface of the insertion pipe 2, is held and rotated.

[0023] Preferably, the connecting pipe 8 has a tapered integral structure, with a first groove 7 and a second groove 11 respectively opened on both sides of its inner wall near the opening end. The shape and size of the first groove 7 and the second groove 11 are adapted to the first threaded section 6 and the second threaded section 10.

[0024] In practical use, the connecting pipe 8 is threaded on the second threaded section 10 through the second groove 11 until it is threaded onto the first threaded section 6 on the surface of the fixing pipe 5 through the first groove 7 on the inner wall of the other side of the connecting pipe 8, thereby fixing the connection between the insertion pipe 2 and the fixing pipe 5.

[0025] Working principle: When installing the bellows body 1 for exhaust in the automotive exhaust system, two bellows bodies 1 are selected according to the length of the bellows body 1 to be connected to the exhaust system. The insertion pipe 2 of one bellows body 1 is inserted into the fixed pipe 5 of the other bellows body 1. When connecting, the guide blocks 3 connected to the surface of the insertion pipe 2 abut against the guide grooves 4 opened in the inner wall of the fixed pipe 5 respectively, and the insertion pipe 2 is inserted towards the inner wall of the fixed pipe 5 until the guide blocks 3 abut against the end of the guide groove 4. Then, rotate counterclockwise 30° so that the guide blocks 3 can abut against the end of the lateral end of the guide groove 4. At this time, the sealing ring 9 bonded to the surface of the insertion pipe 2 abuts against the surface of the intersection of the fixed pipe 5 and the guide groove 4, thereby filling the gap between the two bellows bodies 1. The sealing ring 9 is made of high temperature resistant rubber material, and its surface is tightly abutted against the inner wall of the connecting pipe 8, which can quickly and accurately splice the two bellows bodies 1. After the insertion pipe 2 and the fixing pipe 5 between the two sections of the corrugated pipe body 1 are joined together, the connecting pipe 8, which is threaded onto the second threaded section 10 on the surface of the insertion pipe 2, is gripped and rotated. This causes the connecting pipe 8 to rotate through the second groove 11 onto the second threaded section 10 until it is threaded onto the first groove 7 on the inner wall of the other side of the connecting pipe 8 onto the first threaded section 6 on the surface of the fixing pipe 5, thus fixing the connection between the insertion pipe 2 and the fixing pipe 5. At this point, the two sections of the corrugated pipe body 1 can be quickly fixed together. Then, according to the above method, the connection of multiple sections of the corrugated pipe body 1 can be spliced ​​and fixed according to the production needs of the automotive exhaust system. When maintaining and repairing the vehicle, the connecting pipe 8 threaded onto the surface of the corresponding section of the corrugated pipe body 1 can be rotated according to the damage and age of the corrugated pipe body 1, thereby separating the insertion pipe 2 and the fixing pipe 5 connected at both ends. After separating the fixing pipe 5 and the connecting pipe 8, the insertion pipe 2 can be rotated 30° clockwise to disassemble the corrugated pipe body 1 that needs to be replaced.

[0026] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A corrugated pipe for automobiles with a splicing structure, comprising a corrugated pipe body (1), characterized in that: The corrugated pipe body (1) is connected to the insertion pipe (2), the insertion pipe (2) is connected to the guide block (3), the guide block (3) is slidably connected to the guide groove (4), the guide groove (4) is opened on the inner wall of the fixed pipe (5), the fixed pipe (5) is provided with a first threaded section (6), the surface of the first threaded section (6) is threadedly connected to the surface of the first groove (7), the first groove (7) is opened on the inner wall of the connecting pipe (8), the inner wall surface of the connecting pipe (8) is sleeved on the surface of the sealing ring (9), the inner wall surface of the sealing ring (9) is bonded to the surface of the insertion pipe (2), the insertion pipe (2) is provided with a second threaded section (10), the surface of the second threaded section (10) is threadedly connected to the surface of the second groove (11), the second groove (11) is opened on the inner wall of the connecting pipe (8), and the corrugated pipe body (1) is connected to the fixed pipe (5) on the side away from the insertion pipe (2).

2. The automotive bellows with a splicing structure according to claim 1, characterized in that: The guide groove (4) is an "L" shaped groove, and its shape and size are adapted to the guide block (3).

3. The automotive bellows with a splicing structure according to claim 2, characterized in that: The three sets of guide blocks (3) are distributed in a ring at equal intervals on the surface of the insertion tube (2), and the guide blocks (3) are rectangular integral structures.

4. The automotive bellows with a splicing structure according to claim 1, characterized in that: The sealing ring (9) is a conical integral structure, and its shape and size are adapted to the side of the fixed tube (5) near the guide groove (4).

5. The automotive bellows with a splicing structure according to claim 1, characterized in that: The fixed tube (5), the first threaded section (6), the first groove (7) and the connecting tube (8) form a threaded connection structure.

6. The automotive bellows with a splicing structure according to claim 1, characterized in that: The connecting pipe (8) is a conical integral structure, with a first groove (7) and a second groove (11) respectively opened on both sides of its inner wall near the opening end. The shape and size of the first groove (7) and the second groove (11) are adapted to the first threaded section (6) and the second threaded section (10).

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