Exhaust pipe lug with good damping effect

Abstract

The utility model discloses an exhaust pipe lifting lug with good damping effect belongs to lifting lug technical field, the lifting lug body on be provided with with the first lifting hole of connecting with the automobile frame, the lifting lug body be provided with the cavity, one side of lifting lug body is equipped with the movable block, be provided with the second lifting hole with the automobile exhaust system connection on the movable block, one side of movable block is equipped with the sliding block, the sliding block is connected with movable block through the connecting block, the sliding block is worn into the cavity, when the exhaust system produces the greater lateral displacement or thermal expansion and cold shrink, the force can be passed through movable block and be delivered to the sliding block, and the sliding block can slide in the cavity with small amplitude. The inner wall of cavity forms the constraint and the orientation to the movement of sliding block, and through the friction between sliding block and the elastic deformation of rubber, slowly and effectively absorb and release these additional energy, thereby avoid the excessive rigidity of lifting lug and produce the pull, significantly reduce stress concentration, prolong the life of lifting lug.

Description

Technical Field

[0001] This utility model belongs to the field of lifting lug technology, specifically relating to an exhaust pipe lifting lug with good shock absorption effect. Background Technology

[0002] The exhaust system of a car is connected to the vehicle body via exhaust hangers. With the rapid development of the automotive industry, especially during acceleration, the vibration of the exhaust system is directly transmitted to the interior of the vehicle body through the hangers, resulting in cabin noise and affecting the overall noise and vibration roughness of the vehicle, as well as its vibration and noise comfort performance. Insufficient stiffness design of the hangers can make the exhaust system prone to damage from collisions with road obstacles. With the national emission standard entering the China VI stage, the product structure has changed from only TWC / DOC in the China IV and China V stages to adding GPF / DPF / SCR purifiers. The weight of the hot end of light trucks, pickups, MPVs, and light passenger vehicles has increased significantly. When the vehicle goes over a deep pothole, the body will sink significantly relative to the exhaust. If the relative displacement is too large, it will cause the exhaust to interfere with or collide with the chassis boundary. Therefore, hangers are usually used to connect the car chassis and the exhaust system. However, when the car is bumpy, it will generate a load that exceeds the hanger's bearing capacity. Over time, this will cause fatigue damage to the hanger and reduce its service life. Utility Model Content

[0003] The purpose of this utility model is to provide an exhaust pipe hanger with good shock absorption effect to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: It includes a hanger body connected to the vehicle exhaust system, a first hanger hole for connecting to the vehicle frame on the hanger body, a cavity inside the hanger body, a movable block on one side of the hanger body, a second hanger hole for connecting to the vehicle exhaust system on the movable block, a slider on one side of the movable block, and a connecting block connecting the slider and the movable block, the slider passing through the cavity.

[0004] It should be noted in the solution that a locking ring is provided on the outer periphery of the lifting lug body and the movable block. The locking ring surrounds the outer wall of the lifting lug body and the movable block. Several fasteners are provided on the outer wall of the lifting lug body and the movable block. The locking ring passes through several fasteners in sequence.

[0005] It should be noted in the solution that the outer walls of the lifting lug body and the movable block are provided with several buffer blocks, the buffer blocks are provided with through holes, and the locking ring abuts against the outer wall of the buffer block.

[0006] It should be noted in the design that an annular stop is provided at the opening of the cavity.

[0007] It should be noted in the solution that the inside of the lifting lug body is provided with a hollowed-out buffer zone.

[0008] It should be noted in the solution that the outer wall of the slider is provided with several annular protrusions.

[0009] Compared with the prior art, the exhaust pipe hanger with good shock absorption provided by this utility model has at least the following beneficial effects:

[0010] (1) The rubber material of the lug itself can provide the main shock absorption and vibration isolation effect, absorb the vertical and a certain degree of lateral vibration of the exhaust system, and provide sliding buffer. When the exhaust system produces a large lateral displacement (such as a car turning sharply or bumping) or thermal expansion and contraction, the force will be transmitted to the slider through the moving block. The slider can slide slightly in the cavity. The inner wall of the cavity forms a constraint and guide on the movement of the slider, and through the friction between the slider and the rubber and the elastic deformation, it slowly and effectively absorbs and releases this extra energy, thereby avoiding excessive rigid tension of the lug, significantly reducing stress concentration, and extending the life of the lug.

[0011] (2) The rubber body and internal buffer of the ear body provide the main vertical shock absorption, sliding and limiting: The movable block absorbs lateral displacement and thermal expansion and contraction by sliding the slider in the cavity. The annular protrusion on the slider provides multi-level buffer damping, making the sliding experience smoother. The annular stop effectively prevents the slider from falling out, improving safety. Overall locking and secondary buffering: The core function of the locking ring is to tightly "bind" the ear body and the movable block together, so that they work together as a whole to prevent them from separating or permanently deforming under long-term large-amplitude vibration. At the same time, the locking ring presses against the buffer block. When vibration and displacement occur, the discretely distributed buffer block is squeezed by the locking ring, producing elastic deformation, further absorbing and dispersing energy. This design changes rigid constraints into flexible constraints, which not only ensures the integrity but also avoids excessive stress concentration, greatly extending the service life of the ear. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the product of this utility model;

[0013] Figure 2 This is a second-view three-dimensional structural diagram of the product of this utility model;

[0014] Figure 3 This is a front view cross-sectional structural diagram of the product of this utility model;

[0015] Figure 4 This is an enlarged structural diagram of section A of the product of this utility model.

[0016] In the diagram: 1. Lifting lug body; 2. Movable block; 3. Buffer block; 4. Locking ring; 5. Fastener; 6. Buffer hole; 7. First lifting hole; 8. Second lifting hole; 9. Cavity; 10. Slider; 11. Annular protrusion. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 A shock-absorbing exhaust pipe hanger includes a hanger body 1 connected to the vehicle's exhaust system. The hanger body 1 has a first hanger hole 7 for connecting to the vehicle frame. The hanger body 1 has a cavity 9 inside. A movable block 2 is provided on one side of the hanger body 1. The movable block 2 has a second hanger hole 8 for connecting to the vehicle's exhaust system. A slider 10 is provided on one side of the movable block 2. The slider 10 is connected to the movable block 2 by a connecting block. The slider 10 passes into the cavity 9.

[0019] Through the setting of the lifting lug body 1 and the movable block 2, the following steps are implemented in actual use: Component preparation, 1. Preparation of the lifting lug body 1: The lifting lug body 1 is integrally cast using a mold with a high temperature resistant and high elasticity rubber material (such as fluororubber or hydrogenated nitrile rubber). During casting, the cavity (9) is pre-reserved inside the body, and the first lifting hole 7 is formed at the designated position. A metal bushing can be pre-embedded in the first lifting hole 7 to enhance its wear resistance and structural strength, for use with the connecting bolts on the frame. 2. Preparation of the movable block 2 and the slider 10: The movable block 2 is also cast using the same or slightly harder rubber material as the lifting lug body 1. The second lifting hole 8 is formed on the movable block 2, and a metal bushing can also be pre-embedded inside it for connection with the hook or bracket of the exhaust system. The slider 10 can be an independent component made of a harder material (such as engineering plastic or smooth metal), or it can be formed into an integral component with the movable block 2 and the connecting block through secondary injection molding. The key feature of this component is that the slider 10 has a smooth surface.

[0020] Component Assembly: The prepared movable block 2 and slider 10 assembly is pushed in from the side of the lifting lug body 1 along a specific direction, so that the slider 10 is precisely inserted into and accommodated in the cavity 9 of the lifting lug body 1. After assembly, the movable block 2 is located on the outer side of the lifting lug body 1, while the slider 10 is completely embedded in the cavity 9. The connecting block (as a bridge between the movable block and the slider) passes through an opening in the wall of the lifting lug body. The size of this opening is slightly larger than the cross-sectional size of the connecting block to ensure that the movable block has sufficient room to move without getting stuck when subjected to force.

[0021] Installation and working principle: Connect the first lifting hole 7 to the fixing point on the car frame with bolts; connect the second lifting hole 8 to the hook or bracket of the exhaust system;

[0022] Working Principle: Primarily for shock absorption, the rubber material of the lug body 1 provides primary shock absorption and vibration isolation, absorbing vertical vibrations and a certain degree of lateral vibrations from the exhaust system. It also acts as a sliding buffer. When the exhaust system experiences significant lateral displacement (such as during sharp turns or bumps) or thermal expansion and contraction, the force is transmitted to the slider 10 via the movable block 2. The slider 10 can slide slightly within the cavity 9. The inner wall of the cavity 9 constrains and guides the movement of the slider 10, and through friction with the slider and the elastic deformation of the rubber, it slowly and effectively absorbs and releases this additional energy, thereby preventing excessive rigid tension on the lug, significantly reducing stress concentration, and extending the lug's lifespan.

[0023] A low-friction coefficient material (such as a Teflon coating) can be coated on the inner wall of the cavity 9, or the slider 10 can be made of a self-lubricating material to ensure smooth sliding; the cross-sectional shape of the cavity 9 can be adapted to the cross-sectional shape of the slider 10, for example, both can be rectangular or circular, to provide more precise guidance.

[0024] Furthermore, referring to Figure 1-4 As shown, it is worth noting that a locking ring 4 is provided around the outer periphery of the lifting lug body 1 and the movable block 2. The locking ring 4 surrounds the outer wall of the lifting lug body 1 and the movable block 2. Several fasteners 5 are provided on the outer wall of the lifting lug body 1 and the movable block 2. The locking ring 4 passes through several fasteners 5 in sequence. Several buffer blocks 3 are provided on the outer wall of the lifting lug body 1 and the movable block 2. The buffer blocks 3 are provided with through holes. The locking ring 4 abuts against the outer wall of the buffer blocks 3. An annular stop is provided at the opening of the cavity 9. A hollow buffer zone 6 is provided inside the lifting lug body 1. Several annular protrusions 11 are provided on the outer wall of the slider 10.

[0025] With the setting of locking ring 4, in the actual preparation process of locking ring 4 and fastener 5, fastener 5 is a ring or semi-ring buckle made of metal or high-strength plastic, which is pre-embedded in its outer wall when casting the lifting lug body 1 and the movable block 2, and plays the role of fixing and guiding the locking ring.

[0026] Locking ring 4: It is a metal rod with high strength and a certain degree of flexibility, such as spring steel wire or high-strength nylon rope. Its length can pass through all the pre-embedded fasteners 5 on the outer wall of the lifting lug body 1 and the movable block 2 in sequence, and finally connect end to end to form a ring structure that surrounds the whole.

[0027] II. Component Assembly: Insert the assembly of movable block 2 and slider 10 into the lifting lug body 1 from the side, allowing slider 10 to pass through the opening with the annular stop and enter the cavity 9. The annular stop serves as the last line of defense, ensuring the slider does not completely detach. Thread the locking ring 4, like threading a shoelace, through all the fasteners 5 pre-embedded on the outer walls of the lifting lug body 1 and movable block 2. Tension the locking ring 4 so that it tightly abuts against the outer walls of the discretely distributed buffer blocks 3. Finally, fix the end of the locking ring to complete the assembly.

[0028] III. Working Principle and Beneficial Effects:

[0029] Core damping: The rubber body of the lug 1 and the internal buffer 6 provide primary vertical damping. Sliding and limiting: The movable block absorbs lateral displacement and thermal expansion and contraction through the sliding of the slider 10 within the cavity 9. The annular protrusion 11 on the slider provides multi-level buffer damping, resulting in a smoother sliding experience. The annular stop effectively prevents the slider from coming off, improving safety. Overall locking and secondary buffering: The core function of the locking ring 4 is to tightly "bind" the lug 1 and the movable block 2 together, working as a whole to prevent separation or permanent deformation under long-term large-amplitude vibration. At the same time, the locking ring 4 presses against the buffer block 3. When vibration and displacement occur, the discretely distributed buffer block 3 is squeezed by the locking ring 4, producing elastic deformation, further absorbing and dispersing energy.

[0030] This design transforms rigid constraints into flexible constraints, ensuring overall integrity while avoiding excessive stress concentration, thus greatly extending the service life of the lifting lugs.

[0031] The above describes a shock-absorbing exhaust pipe hanger with good vibration reduction effect provided by this utility model. Specific preferred embodiments are used to illustrate the principle and implementation of this utility model. These embodiments are only used to help understand the principle and core idea of ​​this utility model. It should be noted that for those skilled in the art, the implementation schemes in the above embodiments can be further combined or replaced without departing from the design concept of this utility model, and several improvements and modifications can be made to this utility model. These improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A shock-absorbing exhaust pipe hanger, comprising a hanger body (1) connected to the vehicle exhaust system, characterized in that: The lifting lug body (1) is provided with a first lifting hole (7) for connecting to the car frame. The lifting lug body (1) is provided with a cavity (9). A movable block (2) is provided on one side of the lifting lug body (1). A second lifting hole (8) for connecting to the car exhaust system is provided on the movable block (2). A slider (10) is provided on one side of the movable block (2). The slider (10) is connected to the movable block (2) by a connecting block. The slider (10) passes into the cavity (9).

2. The exhaust pipe hanger with good shock absorption effect according to claim 1, characterized in that... The outer periphery of the lifting lug body (1) and the movable block (2) is provided with a locking ring (4). The locking ring (4) surrounds the outer wall of the lifting lug body (1) and the movable block (2). The outer wall of the lifting lug body (1) and the movable block (2) is provided with a number of fasteners (5). The locking ring (4) passes through the number of fasteners (5) in sequence.

3. The exhaust pipe hanger with good shock absorption effect according to claim 2, characterized in that... The outer walls of the lifting lug body (1) and the movable block (2) are provided with several buffer blocks (3), the buffer blocks (3) are provided with through holes, and the locking ring (4) abuts against the outer wall of the buffer block (3).

4. The exhaust pipe hanger with good shock absorption effect according to claim 3, characterized in that... An annular baffle is provided at the opening of the cavity (9).

5. The exhaust pipe hanger with good shock absorption effect according to claim 4, characterized in that: The lug body (1) has a hollowed-out buffer zone (6) inside.

6. The exhaust pipe hanger with good shock absorption effect according to claim 5, characterized in that: The outer wall of the slider (10) is provided with several annular protrusions (11).

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