A car exhaust pipe mounting structure

Abstract

This utility model discloses an automotive exhaust pipe installation structure, belonging to the field of automotive exhaust pipe installation technology. It includes an exhaust pipe and symmetrically mounted hangers on the exhaust pipe. A fixing frame is provided between the ends of the hangers, and symmetrical installation openings are provided on the fixing frame. Each end of the installation opening is fixed with a retaining ring, and an I-shaped ring is fitted inside the retaining ring. The inside of the I-shaped ring is movably connected to the outside of the hanger. A limit component is provided at the end of the hanger. Mounting plates are fixed on both sides of the fixing frame, and each mounting plate has a through-hole in the middle. This utility model, through the cooperation of the movable ring and the waist-shaped groove, allows for flexible rotation and adjustment to accommodate pre-drilled holes of different spacings, effectively improving installation adaptability. The precise alignment design of the positioning tube and the pre-drilled holes reduces installation deviation and ensures connection stability. The overall structure balances adjustment flexibility and connection reliability, adapting to various working conditions and improving exhaust pipe installation efficiency and adaptability.

Description

Technical Field

[0001] This utility model relates to an exhaust pipe installation structure, and more particularly to an automotive exhaust pipe installation structure, belonging to the field of automotive exhaust pipe installation technology. Background Technology

[0002] Because the exhaust gas from a car leaves the engine under high pressure, the noise it produces can be uncomfortable. The exhaust pipe contains a muffler, which works by splitting the airflow through multiple channels. These split airflows rub and collide with each other, gradually reducing the airflow speed. This cycle repeats until the exhaust gas is finally discharged through the exhaust pipe, reducing noise and thus achieving the effect of reducing noise in daily driving. Therefore, the use of a car exhaust pipe is essential.

[0003] Current automotive exhaust systems generally employ a composite mounting scheme of "rigid support + flexible suspension": the exhaust pipe assembly is rigidly positioned via a metal mounting bracket, the end of which is securely connected to pre-drilled mounting holes in the vehicle's chassis longitudinal / transverse beams via bolt assemblies; simultaneously, rubber hangers are spaced along the exhaust pipe's axial direction, connected to the chassis via metal inserts, with their rubber bodies forming an interference fit with the annular boss on the outer circumference of the exhaust pipe, utilizing the elastic deformation of the rubber to achieve vibration damping and displacement compensation. This combined structure ensures the spatial positioning accuracy of the exhaust system while reducing the transmission of engine vibration to the vehicle body through the rubber hangers, balancing installation rigidity and NVH performance.

[0004] Current technologies still have shortcomings:

[0005] Current automotive exhaust pipe mounting structures mostly consist of a combination of rubber hangers and metal brackets. However, the rigid connection between the two limits vibration damping and noise reduction performance, and long-term use can easily lead to fatigue failure or even breakage. In addition, the connection holes between the metal bracket and the chassis are fixed, lacking space for adjustment. This makes it impossible to adapt the installation position to the vehicle assembly tolerances or different operating conditions, resulting in poor overall structural adaptability.

[0006] Therefore, a new automotive exhaust pipe mounting structure was designed to optimize the above-mentioned problems. Utility Model Content

[0007] The main objective of this invention is to provide an automotive exhaust pipe mounting structure to solve the problems mentioned in the background section.

[0008] The objective of this utility model can be achieved by adopting the following technical solution:

[0009] An exhaust pipe mounting structure for automobiles includes an exhaust pipe and symmetrically mounted hangers on the exhaust pipe;

[0010] A fixing frame is provided between the ends of the boom. The fixing frame has symmetrical installation openings. Both ends of the installation opening are fixed with retaining rings. I-shaped rings are installed inside the retaining rings and are movably connected to the outside of the boom. Limiting components are provided at the ends of the boom. Mounting plates are fixed on both sides of the fixing frame. A through-hole is opened in the middle of the mounting plate. Support rods are evenly arranged in a ring shape inside the through-hole. A fixing ring is fixed between the intersecting ends of the support rods. A positioning tube is fixed inside the fixing ring. A movable ring is rotatably installed on the outside of the positioning tube through a bearing. A waist-shaped groove is opened on one side of the movable ring. A screw is installed inside the waist-shaped groove.

[0011] Preferably, the limiting assembly includes a limiting ring and a sealing tube. The limiting ring is sleeved and installed on the outer side of the end of the lifting rod near the fixed frame. The sealing tube is threaded and installed on the outer side of the end of the lifting rod. A limiting groove is formed on the inner side wall of the sealing tube near the end of the I-shaped ring.

[0012] Preferably, one side of the mounting plate is provided with an anti-slip pad, and the anti-slip pad is provided with anti-slip texture.

[0013] Preferably, inclined grooves are provided on the outer sides of both ends of the I-shaped ring, and the I-shaped ring is an elastic ring.

[0014] Preferably, the connection between the positioning tube and the movable ring is provided with an annular rubber sealing gasket, a waist-shaped groove, and a screw for movable connection.

[0015] Preferably, the inner wall of the retaining ring has anti-slip protrusions evenly distributed, the protrusions are 1-2mm high, and they fit tightly against the outer wall of the I-shaped ring.

[0016] Preferably, the depth of the limiting groove is 3-5mm, and its inner sidewall is provided with anti-slip texture.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model utilizes the combined use of an exhaust pipe, hanger, fixed frame, mounting port, retaining ring, I-shaped ring, through port, support rod, fixed ring, mounting plate, positioning tube, movable ring, waist-shaped groove, and screws. Through the cooperation of the movable ring and waist-shaped groove, the position can be flexibly rotated and adjusted to fit the reserved hole positions with different spacing, effectively improving installation adaptability. The precise alignment design of the positioning tube and the reserved hole reduces installation deviation and ensures connection stability. The overall structure takes into account both adjustment flexibility and connection reliability, can adapt to various working conditions, and improves the installation efficiency and adaptability of the exhaust pipe.

[0019] 2. This utility model uses a combination of a limiting ring, a sealing tube, and a limiting groove. The sealing tube and the rod are threaded together, and the limiting groove engages with the limiting ring to securely lock the I-shaped ring. This effectively prevents the rod from falling off the I-shaped ring due to the shaking of the exhaust pipe, significantly improving the reliability of the connection. It is also easy to disassemble and assemble, and has strong adaptability. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention;

[0021] Figure 2 For the present utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the mounting plate of this utility model;

[0023] Figure 4 This is a cross-sectional view of the sealing tube of this utility model.

[0024] In the diagram: 1. Exhaust pipe; 2. Hanger rod; 3. Fixing frame; 4. Mounting port; 5. Clip ring;

[0025] 6. Limiting assembly; 601. Limiting ring; 602. Sealing tube; 603. Limiting groove;

[0026] 7. I-shaped ring; 8. Through port; 9. Support rod; 10. Fixing ring; 11. Mounting plate; 12. Positioning tube; 13. Movable ring; 14. Waist groove; 15. Screw. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0028] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Example 1

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes an automotive exhaust pipe mounting structure, including an exhaust pipe 1 and hangers 2 symmetrically mounted on the exhaust pipe 1;

[0034] A fixing frame 3 is provided between the ends of the boom 2. The fixing frame 3 has symmetrically opened installation ports 4. Both ends of the installation port 4 are fixed with retaining rings 5. I-shaped rings 7 are installed inside the retaining rings 5 ​​and are movably connected to the outside of the boom 2. The end of the boom 2 is provided with a limit component 6. Mounting plates 11 are fixed on both sides of the fixing frame 3. A through-hole 8 is opened in the middle of the mounting plate 11. Support rods 9 are evenly arranged in a ring shape inside the through-hole 8. A fixing ring 10 is fixed between the intersecting ends of the support rods 9. A positioning tube 12 is fixed inside the fixing ring 10. A movable ring 13 is rotatably installed on the outside of the positioning tube 12 through a bearing. A waist-shaped groove 14 is opened on one side of the movable ring 13. A screw 15 is installed inside the waist-shaped groove 14.

[0035] The I-shaped rings 7 are respectively snapped into the inside of the retaining rings 5. The hanger rod 2 is inserted into the inside of the I-shaped rings 7. The I-shaped rings 7 play a role in reducing vibration for the hanger rod 2 and the exhaust pipe 1. After being limited by the limiting component 6, the fixing frame 3 and the mounting plate 11 are attached to one side of the chassis. According to the preset mounting holes of the chassis longitudinal beams and cross beams, the movable ring 13 is rotated so that the waist-shaped groove 14 inside the movable ring 13 is aligned with the reserved hole. Then, the screw 15 is inserted into the reserved hole through the waist-shaped groove 14. The screw 15 is then screwed into the chassis longitudinal beams and cross beams using a tool. When the reserved hole is aligned with the hole of the positioning tube 12, the screw 15 can be directly inserted into the reserved hole through the positioning tube 12 for installation and fixation.

[0036] Example 2

[0037] The solution in Example 1 will be further described below with reference to its specific working method.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, in a preferred embodiment, based on the above method, the limiting component 6 further includes a limiting ring 601 and a sealing tube 602. The limiting ring 601 is sleeved and installed on the outer side of the end of the rod 2 near the fixed frame 3. The sealing tube 602 is threaded and installed on the outer side of the end of the rod 2. A limiting groove 603 is formed on the inner side wall of the sealing tube 602 near the end of the I-shaped ring 7.

[0039] The I-shaped ring 7 is fitted into the mounting port 4 and the retaining ring 5, and the rod 2 is passed through the inside of the I-shaped ring 7, so that the rod 2 extends to the outside of the I-shaped ring 7. The sealing tube 602 is aligned with the end of the rod 2, and the rod 2 is pushed to one side of the I-shaped ring 7 by rotating the thread on the end of the rod 2. The limiting groove 603 inside the sealing tube 602 is engaged with the outside of the limiting ring 601, which plays a role in limiting the I-shaped ring 7 and preventing the rod 2 from falling off the I-shaped ring 7 when the exhaust pipe 1 shakes.

[0040] like Figure 1 As shown, in a preferred embodiment, based on the above method, a non-slip pad is further provided on one side of the mounting plate 11, and the non-slip pad is provided with non-slip texture.

[0041] The friction coefficient between the mounting plate 11 and the chassis is increased to prevent the mounting plate 11 from shifting due to vehicle vibration. At the same time, the anti-slip texture further improves the tightness of the fit and ensures the long-term stability of the fixed structure.

[0042] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, inclined grooves are further provided on the outer sides of both ends of the I-shaped ring 7, and the I-shaped ring 7 is an elastic ring.

[0043] The inclined groove can guide the I-shaped ring 7 to quickly snap into the installation port 4 and the retaining ring 5, reducing the difficulty of assembly; the elastic ring characteristics enable it to adapt to the slight displacement of the rod 2, which not only ensures the connection sealing, but also buffers vibration through elastic deformation and reduces rigid wear.

[0044] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, an annular rubber sealing gasket is provided at the connection between the positioning tube 12 and the movable ring 13, and the waist-shaped groove 14 and screw 15 are movably connected.

[0045] The rubber sealing gasket's elasticity dampens vibration transmission, preventing abnormal noise caused by hard contact between the positioning tube 12 and the moving ring 13, and extending the service life of the rotating structure.

[0046] like Figure 1As shown, in a preferred embodiment, based on the above method, the inner sidewall of the retaining ring 5 is further provided with anti-slip protrusions evenly distributed, the protrusions being 1-2mm high and tightly fitted to the outer sidewall of the I-shaped ring 7.

[0047] The anti-slip protrusions can enhance the engagement force between the retaining ring 5 and the I-shaped ring 7, preventing them from sliding relative to each other. Especially when the exhaust pipe 1 vibrates at high frequency, it can stably maintain the radial positioning accuracy and avoid loosening of the connection.

[0048] like Figure 1 As shown, in a preferred embodiment, based on the above method, the depth of the limiting groove 603 is 3-5mm, and its inner sidewall is provided with anti-slip texture.

[0049] A depth of 3-5mm ensures effective engagement with the limiting ring 601, preventing axial detachment; the inner anti-slip texture increases contact friction, preventing relative rotation between the limiting groove 603 and the limiting ring 601 when the vehicle is bumpy, thus enhancing the limiting reliability of the I-shaped ring 7.

[0050] Example 3

[0051] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0052] First, engage the I-shaped ring 7 with the mounting port 4 and the retaining ring 5. Then, insert the lifting rod 2 into the I-shaped ring 7 and extend it to its outer side. Align the sealing tube 602 with the end of the lifting rod 2 and push it to one side of the I-shaped ring 7 through the threaded engagement until the limiting groove 603 in the sealing tube 602 is close to the limiting ring 601. Continue to rotate the sealing tube 602 so that the limiting groove 603 engages with the outer side of the limiting ring 601, thereby limiting the I-shaped ring 7 and preventing the lifting rod 2 from falling off the I-shaped ring 7 due to the shaking of the exhaust pipe 1.

[0053] After the fixed frame 3 and the hanging rod 2 are engaged, attach the fixed frame 3 and the mounting plate 11 to one side of the chassis; rotate the movable ring 13 according to the reserved hole position so that the waist-shaped groove 14 on the movable ring 13 is aligned with the reserved hole position, insert the screw 15 through the waist-shaped groove 14 into the hole position and tighten it to fix it; if the reserved hole position is aligned with the positioning tube 12, the screw 15 can be directly inserted through the positioning tube 12 into the hole position to complete the fixation.

[0054] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A car exhaust pipe mounting structure, comprising an exhaust pipe (1) and hangers (2) symmetrically mounted on the exhaust pipe (1); Its features are: A fixed frame (3) is provided between the ends of the boom (2). The fixed frame (3) is symmetrically provided with an installation port (4). Both ends of the installation port (4) are fixed with a retaining ring (5). The retaining ring (5) is fitted with an I-shaped ring (7). The inside of the I-shaped ring (7) is movably connected to the outside of the boom (2). The end of the boom (2) is provided with a limit component (6). Both sides of the fixed frame (3) are fixed with mounting plates (11). The middle position of the mounting plates (11) is provided with a through-hole (8). The inside of the through-hole (8) is uniformly provided with support rods (9) in a ring shape. The ends of the support rods (9) are fixed with a fixed ring (10). The inside of the fixed ring (10) is fixed with a positioning tube (12). The outside of the positioning tube (12) is rotatably installed with a movable ring (13) through a bearing. One side of the movable ring (13) is provided with a waist-shaped groove (14). The inside of the waist-shaped groove (14) is provided with a screw (15).

2. The automotive exhaust pipe mounting structure according to claim 1, characterized in that: The limiting component (6) includes a limiting ring (601) and a sealing tube (602). The limiting ring (601) is sleeved and installed on the outside of the end of the rod (2) near the fixed frame (3). The sealing tube (602) is threaded and installed on the outside of the end of the rod (2). A limiting groove (603) is opened on the inner wall of the sealing tube (602) near the end of the I-shaped ring (7).

3. The automotive exhaust pipe mounting structure according to claim 1, characterized in that: An anti-slip pad is provided on one side of the mounting plate (11), and the anti-slip pad is provided with anti-slip texture.

4. The automotive exhaust pipe mounting structure according to claim 1, characterized in that: Inclined grooves are provided on the outer sides of both ends of the I-shaped ring (7), and the I-shaped ring (7) is an elastic ring.

5. The automotive exhaust pipe mounting structure according to claim 1, characterized in that: The connection between the positioning tube (12) and the movable ring (13) is provided with an annular rubber sealing gasket, and the waist-shaped groove (14) and screw (15) are movably connected.

6. The automotive exhaust pipe mounting structure according to claim 1, characterized in that: The inner wall of the retaining ring (5) is evenly distributed with anti-slip protrusions, the protrusion height is 1-2mm, and it fits tightly with the outer wall of the I-shaped ring (7).

7. The automotive exhaust pipe mounting structure according to claim 2, characterized in that: The depth of the limiting groove (603) is 3-5mm, and its inner sidewall is provided with anti-slip texture.

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