Corrosion-resistant bushing for damping of automobile

Abstract

The utility model discloses a corrosion-resistant bushing for shock absorption of an automobile, which relates to the technical field of shock-absorbing bushings of automobiles and comprises a flange base, an outer bushing is welded at the top of the flange base, a first rubber bushing is mounted in the outer bushing in a clearance fit manner, and a second rubber bushing is mounted in the first rubber bushing. Assembling blocks are symmetrically and fixedly connected to the inner wall of the second rubber bushing, fixing assemblies are installed in the assembling blocks, a lining cylinder is movably connected to the interior of the second rubber bushing, a baffle is welded to the bottom of the lining cylinder, a fixing column is fixedly connected to the interior of the lining cylinder, and a moving assembly is installed at the bottom of the fixing column. By the adoption of the structure, large external force can be borne, the situation that in the running process of an automobile, relative displacement is caused by vibration, bumping and other factors is effectively avoided, and it is guaranteed that an automobile damping system is always kept in a stable working state.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive shock absorber bushings, and specifically relates to a corrosion-resistant bushing for automotive shock absorbers. Background Technology

[0002] As a key component of the suspension system, automotive shock absorber bushings typically consist of an inner ring, an outer ring, and an intermediate elastomer, usually made of rubber or polyurethane. With their excellent elasticity and damping properties, they effectively absorb road impacts, reduce vibration and noise, ensure precise wheel positioning, and maintain stable vehicle handling. Manufacturing processes include vulcanization molding and injection molding. They undergo various performance tests and are continuously evolving towards material innovation, structural optimization, and intelligent technology, playing a significant role in improving overall vehicle performance and ride comfort.

[0003] Publication No. "CN222687185U" discloses an automotive shock absorber rubber bushing, comprising: an outer bushing, a groove, and a pad; the groove is integrally formed on the inner wall of the outer bushing, and a pad is welded to the lower part of the outer bushing; the rubber bushing is installed inside the upper part of the outer bushing via a clearance fit, and the outer wall of the rubber bushing is integrally formed with reinforcing ribs; the inner bushing is simultaneously inserted into the pad and the rubber bushing via a clearance fit, and a baffle is welded to the bottom end of the inner bushing; the top seat is screwed onto the top end of the inner bushing via threads. Through structural improvements, this design offers advantages such as strong installation stability, improved safety performance, and long service life, making it more practical and valuable, thus effectively solving the problems and shortcomings of existing technologies and equipment.

[0004] While the aforementioned utility model improves safety and extends service life, making it more practical and valuable, thus effectively solving the problems and shortcomings of existing technologies and equipment, the inner liner is simultaneously inserted into the pad and rubber bushing through a clearance fit. During vehicle operation, vibrations such as road bumps can cause relative sliding and displacement between the rubber bushing and the inner liner, affecting the overall shock absorption effect and stability of the shock-absorbing bushing. Moreover, the relative movement can lead to increased wear on the rubber bushing and the inner liner, shortening the service life of the components and increasing maintenance and replacement costs. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a corrosion-resistant bushing for automotive shock absorbers, so as to solve the problem that during vehicle operation, due to vibration factors such as road bumps, relative sliding and displacement easily occur between the rubber bushing and the inner liner, which affects the overall shock absorption effect and stability of the shock absorber bushing. Moreover, the relative movement will lead to accelerated wear of the rubber bushing and the inner liner, shortening the service life of the components.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A corrosion-resistant bushing for automotive shock absorbers includes a flange base, an outer bushing welded to the top of the flange base, a first rubber bushing installed inside the outer bushing with clearance fit, a second rubber bushing installed inside the first rubber bushing, assembly blocks symmetrically fixedly connected to the inner wall of the second rubber bushing, a fixing component installed inside the assembly blocks, an inner bushing movably connected inside the second rubber bushing, a baffle welded to the bottom of the inner bushing, a fixing column fixedly connected inside the inner bushing, and a moving component installed at the bottom of the fixing column.

[0008] The fixing assembly includes a cavity, a return spring, a movable plate, and a locking block. The cavity is located inside the assembly block. A return spring is fixedly connected to one side of the cavity, and a movable plate is fixedly connected to the other end of the return spring. The movable plate is slidably connected to the cavity. A locking block is fixedly connected to the other side of the movable plate, with its other end extending beyond the side of the assembly block. The bottom of the locking block has an inclined surface. Assembly grooves are symmetrically formed on the outer wall of the inner liner. The assembly block is slidably connected to the assembly groove. A locking groove is formed at the bottom of the assembly groove, and the locking block engages with the locking groove. An unlocking block is slidably connected inside the locking groove. Limit blocks are fixedly connected to both sides of the unlocking block. The locking groove has limit blocks on both sides... Each component has a limiting groove, and the limiting block and the limiting groove are slidably connected. The bottom of the unlocking block is fixedly connected to a slider, and the other end of the slider extends out to the bottom of the fixing post. The bottom of the fixing post has symmetrically opened sliding grooves, which are internally connected to the locking groove. The slider and the sliding groove are slidably connected, which can withstand a large external force and effectively prevent relative displacement between the two due to vibration, bumps and other factors during vehicle operation. This ensures that the car shock absorption system always maintains a stable working state, and can also reduce friction and wear between the rubber bushing and the inner liner, reduce fatigue stress caused by relative movement, and thus extend the service life of the rubber bushing and the inner liner.

[0009] As a preferred technical solution, the moving component includes a first screw, a connecting post, a second screw, a moving block, and a turntable. The first screw and the second screw are symmetrically rotatably connected to the inner wall of the inner liner. The connecting post is fixedly connected to the opposite ends of the first screw and the second screw. The turntable is fixedly sleeved on the outside of the connecting post. The moving block is sleeved on the outside of both the first screw and the second screw. The first screw and the second screw are threadedly connected to the moving block. The top of the moving block is fixedly connected to the slider, which allows the moving block to accurately stop in the corresponding position after the turntable stops rotating. This ensures that the unlocking block is in a fixed position and will not move arbitrarily due to vibration. Even if it is subjected to vibration, the moving block is unlikely to have axial displacement due to the constraint of the thread, thereby avoiding the unlocking block being accidentally pushed and reducing the possibility of the unlocking block pushing the locking block due to vibration.

[0010] As a preferred technical solution, the outer wall of the first rubber bushing is symmetrically and evenly connected with reinforcing ribs, which are semi-circular protrusions. The inner wall of the outer bushing is symmetrically and evenly provided with locking grooves, which are also semi-circular. The reinforcing ribs and the locking grooves are aligned in curvature, which can adjust the degree and frequency of deformation of the rubber bushing to a certain extent. When the device is vibrated, the movement of the reinforcing ribs in the locking grooves can consume some of the vibration energy, allowing the rubber bushing to better perform its shock absorption effect, reducing the impact of vibration on the equipment, and improving the stability and service life of the equipment.

[0011] As a preferred technical solution, the top of the inner liner is provided with a top seat, the outer wall of the inner liner is provided with external threads, and the inner wall of the top seat is provided with internal threads. The external threads and internal threads are threadedly connected, which can provide a large connection force, so that the top seat and the inner liner are tightly connected. During the operation of the equipment, it can effectively withstand axial and radial forces, and is not easy to loosen or fall off, thus ensuring the stability and safety of the structure.

[0012] As a preferred technical solution, the inner wall of the first rubber bushing is symmetrically provided with guide grooves, and the outer wall of the second rubber bushing is symmetrically fixedly connected with guide blocks. The guide blocks and guide grooves are snap-fitted together. The first and second rubber bushings can effectively attenuate vibrations of different directions and frequencies, thereby more comprehensively reducing the vibrations generated during equipment operation, improving the stability and comfort of the equipment, and reducing the impact of vibrations on the equipment itself and the surrounding environment.

[0013] In summary, the present invention has the following main advantages:

[0014] First, in this utility model, the second rubber bushing is combined with the first rubber bushing and the inner liner, so that the assembly block slides inside the assembly groove. During the sliding process, the squeezing force applies pressure to the bottom inclined surface of the locking block, so that the locking block drives the moving plate to press against the return spring. The return spring is compressed. When the locking block moves to the locking groove, the return spring returns to its original position, and the locking block pops out and engages with the locking groove. It can withstand a large external force and effectively prevents the relative displacement between the two due to vibration, bumps and other factors during vehicle operation. This ensures that the car shock absorption system always maintains a stable working state. Moreover, it can reduce the friction and wear between the rubber bushing and the inner liner, reduce the fatigue stress caused by relative movement, and thus extend the service life of the rubber bushing and the inner liner.

[0015] Secondly, in this utility model, rotating the turntable causes the connecting column to drive the first screw and the second screw to rotate, thereby controlling the moving block to rotate with the first screw and the second screw respectively, causing the moving block to move. When the moving block moves, it drives the unlocking block to move through the slider. The unlocking block pushes the locking block, causing the locking block to drive the moving plate to press against the return spring. The return spring is compressed, and the locking block and the locking groove are finally engaged. This ensures that after the turntable stops rotating, the moving block will accurately stop at the corresponding position, ensuring that the unlocking block is in a fixed position and will not move arbitrarily due to vibration. Even if it is subjected to vibration, the moving block is unlikely to have axial displacement due to the constraint of the threads, thereby avoiding the unlocking block being accidentally pushed and also reducing the possibility that the unlocking block will push the locking block due to vibration. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is the utility model Figure 1 Enlarged view of part A;

[0018] Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;

[0019] Figure 4 This is the utility model Figure 3 Enlarged view of part B;

[0020] Figure 5 This is the utility model Figure 3 Enlarged view of part C.

[0021] Reference numerals: 1. Flange base; 2. Outer liner; 3. First rubber bushing; 4. Second rubber bushing; 5. Reinforcing rib; 6. Engaging groove; 7. Guide block; 8. Guide groove; 9. Inner liner; 10. Baffle; 11. Top seat; 12. External thread; 13. Internal thread; 14. Assembly block; 15. Assembly groove; 16. Fixing component; 161. Cavity; 162. Return spring; 163. Moving plate; 164. Locking block; 17. Locking groove; 18. Fixing column; 20. Unlocking block; 21. Limiting block; 22. Limiting groove; 23. Slide groove; 24. Sliding block; 25. Moving component; 251. First screw; 252. Connecting column; 253. Second screw; 254. Moving block; 255. Turntable. Detailed Implementation

[0022] Example

[0023] refer to Figures 1 to 5The corrosion-resistant bushing for automotive shock absorbers described in this embodiment includes a flange base 1, an outer bushing 2 welded to the top of the flange base 1, a first rubber bushing 3 installed inside the outer bushing 2 with clearance fit, a second rubber bushing 4 installed inside the first rubber bushing 3, an assembly block 14 symmetrically fixedly connected to the inner wall of the second rubber bushing 4, a fixing component 16 installed inside the assembly block 14, an inner bushing 9 movably connected inside the second rubber bushing 4, a baffle 10 welded to the bottom of the inner bushing 9, a fixing column 18 fixedly connected inside the inner bushing 9, a moving component 25 installed at the bottom of the fixing column 18, and both the first rubber bushing 3 and the second rubber bushing 4 are coated with an epoxy resin coating.

[0024] The fixing component 16 includes a cavity 161, a return spring 162, a moving plate 163, and a locking block 164. The assembly block 14 has a cavity 161 inside. A return spring 162 is fixedly connected to one side of the cavity 161, and a moving plate 163 is fixedly connected to the other end of the return spring 162. The moving plate 163 is slidably connected to the cavity 161. A locking block 164 is fixedly connected to the other side of the moving plate 163, and the other end of the locking block 164 extends beyond the side of the assembly block 14. The bottom of the locking block 164 has a slope. Assembly grooves 15 are symmetrically formed on the outer wall of the inner liner 9. The assembly block 14 and the assembly grooves... 15 is a sliding connection. The bottom of the assembly groove 15 is provided with a locking groove 17. The locking block 164 is engaged with the locking groove 17. The second rubber bushing 4, together with the first rubber bushing 3 and the inner liner 9, are combined, so that the assembly block 14 slides inside the assembly groove 15. During the sliding process, the squeezing force applies pressure to the bottom slope of the locking block 164, so that the locking block 164 drives the moving plate 163 to press against the return spring 162. The return spring 162 is compressed. When the locking block 164 moves to the locking groove 17, the return spring 162 returns to its original position, and the locking block 164 pops out and engages with the locking groove 17 for fixation.

[0025] refer to Figure 4 An unlocking block 20 is slidably connected inside the locking groove 17. Limiting blocks 21 are fixedly connected to both sides of the unlocking block 20. Limiting grooves 22 are opened on both sides of the locking groove 17. The limiting blocks 21 and the limiting grooves 22 are slidably connected. A slider 24 is fixedly connected to the bottom of the unlocking block 20. The other end of the slider 24 extends out to the bottom of the fixing post 18. The bottom of the fixing post 18 is symmetrically provided with sliding grooves 23. The sliding grooves 23 are connected to the inside of the locking groove 17. The slider 24 and the sliding groove 23 are slidably connected. Pushing the unlocking block 20 causes it to slide inside the locking groove 17. The unlocking block 20 drives the limiting blocks 21 to slide inside the limiting grooves 22. The unlocking block 20 pushes the locking block 164, causing the locking block 164 to drive the moving plate 163 to press against the return spring 162. The return spring 162 is compressed, and the locking block 164 retracts into the cavity 161. The locking block 164 and the locking groove 17 are no longer inserted.

[0026] refer to Figure 5 The movable component 25 includes a first screw 251, a connecting post 252, a second screw 253, a movable block 254, and a turntable 255. The first screw 251 and the second screw 253 are symmetrically rotatably connected to the inner wall of the inner liner 9. The connecting post 252 is fixedly connected to the opposite ends of the first screw 251 and the second screw 253. The turntable 255 is fixedly sleeved on the outside of the connecting post 252. The movable block 254 is sleeved on the outside of both the first screw 251 and the second screw 253. The first screw 251 and the second screw 253 are threadedly connected to the movable block 254. The top of the movable block 254 is fixedly connected to the slider 24.

[0027] refer to Figure 1 The outer wall of the first rubber bushing 3 is symmetrically and evenly connected with reinforcing ribs 5, which are semi-circular protrusions. The inner wall of the outer bushing 2 is symmetrically and evenly provided with locking grooves 6, which are semi-circular. The reinforcing ribs 5 and locking grooves 6 are arc-fitted. Through the setting of reinforcing ribs 5 and locking grooves 6, the deformation degree and frequency of the rubber bushing can be adjusted to a certain extent. When the device is vibrated, the movement of reinforcing ribs 5 in locking grooves 6 can consume some vibration energy, so that the rubber bushing can better play the role of shock absorption, reduce the impact of vibration on the equipment, and improve the stability and service life of the equipment.

[0028] refer to Figure 1 The inner liner 9 is provided with a top seat 11. The outer wall of the inner liner 9 is provided with an external thread 12, and the inner wall of the top seat 11 is provided with an internal thread 13. The external thread 12 and the internal thread 13 are threadedly connected. The first rubber bushing 3 and the second rubber bushing 4 are installed on the outside of the inner liner 9. Then, the top seat 11 is attached to the top of the inner liner 9. The top seat 11 is rotated so that the external thread 12 and the internal thread 13 rotate threadedly, thus completing the installation of the top seat 11.

[0029] refer to Figure 2 The inner wall of the first rubber bushing 3 is symmetrically provided with guide grooves 8, and the outer wall of the second rubber bushing 4 is symmetrically fixedly connected with guide blocks 7. The guide blocks 7 and the guide grooves 8 are engaged. The second rubber bushing 4 and the first rubber bushing 3 are combined, so that the second rubber bushing 4 is inserted into the inside of the first rubber bushing 3. At the same time, the second rubber bushing 4 drives the guide blocks 7 to engage with the guide grooves 8.

[0030] Operating principle and advantages: First, the second rubber bushing 4 is joined with the first rubber bushing 3, so that the second rubber bushing 4 is inserted into the first rubber bushing 3. At the same time, the second rubber bushing 4 drives the guide block 7 to engage with the guide groove 8. Then, the second rubber bushing 4, together with the first rubber bushing 3, is joined with the inner liner 9, so that the assembly block 14 slides inside the assembly groove 15. During the sliding process, the extrusion pressure applies pressure to the bottom inclined surface of the locking block 164, causing the locking block 164 to move. Plate 163 presses against return spring 162, and return spring 162 is compressed. When locking block 164 moves to locking groove 17, return spring 162 resets, locking block 164 pops out and engages with locking groove 17, and at the same time, top seat 11 is attached to the top of inner liner 9. Rotate top seat 11 so that external thread 12 and internal thread 13 rotate to complete the installation of top seat 11. Finally, insert the first rubber bushing 3, the second rubber bushing 4 together with inner liner 9 into the inside of outer liner 2.

[0031] This invention can withstand greater external forces and effectively prevent relative displacement between the two components due to vibration, bumps, and other factors during vehicle operation, ensuring that the vehicle's shock absorption system always maintains a stable working state. It can also reduce friction and wear between the rubber bushing and the inner liner 9, reduce fatigue stress caused by relative movement, and thus extend the service life of the rubber bushing and the inner liner 9.

Claims

1. A corrosion-resistant bushing for automotive shock absorbers, comprising a flange base (1), characterized in that: The flange base (1) is welded to the top of an outer liner (2). A first rubber bushing (3) is installed inside the outer liner (2) with a clearance fit. A second rubber bushing (4) is installed inside the first rubber bushing (3). Assembly blocks (14) are symmetrically fixed to the inner wall of the second rubber bushing (4). A fixing component (16) is installed inside the assembly block (14). An inner liner (9) is movably connected inside the second rubber bushing (4). A baffle (10) is welded to the bottom of the inner liner (9). A fixing column (18) is fixedly connected inside the inner liner (9). A moving component (25) is installed at the bottom of the fixing column (18). The fixing component (16) includes a cavity (161), a return spring (162), a moving plate (163), and a locking block (164). The assembly block (14) has a cavity (161) inside. A return spring (162) is fixedly connected to one side of the cavity (161). A moving plate (163) is fixedly connected to the other end of the return spring (162). The moving plate (163) is slidably connected to the cavity (161). A locking block (164) is fixedly connected to the other side of the moving plate (163). The other end of the locking block (164) extends out of the side end of the assembly block (14). The bottom of the locking block (164) has an inclined surface.

2. The corrosion-resistant bushing for automotive shock absorbers according to claim 1, characterized in that: The inner liner (9) has symmetrically provided assembly grooves (15) on its outer side wall. The assembly block (14) is slidably connected to the assembly groove (15). The bottom of the assembly groove (15) has a locking groove (17). The locking block (164) is snapped into the locking groove (17).

3. The corrosion-resistant bushing for automotive shock absorbers according to claim 2, characterized in that: The locking groove (17) is slidably connected to an unlocking block (20). Limiting blocks (21) are fixedly connected to both sides of the unlocking block (20). Limiting grooves (22) are opened on both sides of the locking groove (17). The limiting blocks (21) and the limiting grooves (22) are slidably connected. A slider (24) is fixedly connected to the bottom of the unlocking block (20). The other end of the slider (24) extends out to the bottom of the fixing post (18).

4. The corrosion-resistant bushing for automotive shock absorbers according to claim 3, characterized in that: The bottom of the fixed column (18) is symmetrically provided with a sliding groove (23), the sliding groove (23) is connected to the locking groove (17), and the slider (24) is slidably connected to the sliding groove (23).

5. The corrosion-resistant bushing for automotive shock absorbers according to claim 1, characterized in that: The moving component (25) includes a first screw (251), a connecting post (252), a second screw (253), a moving block (254), and a turntable (255). The inner wall of the inner liner (9) is symmetrically and rotatably connected to the first screw (251) and the second screw (253). The connecting post (252) is fixedly connected to the opposite ends of the first screw (251) and the second screw (253). The turntable (255) is fixedly sleeved on the outside of the connecting post (252). The moving block (254) is sleeved on the outside of both the first screw (251) and the second screw (253). The first screw (251) and the second screw (253) are both threadedly connected to the moving block (254). The top of the moving block (254) is fixedly connected to the slider (24).

6. The corrosion-resistant bushing for automotive shock absorbers according to claim 1, characterized in that: The outer wall of the first rubber bushing (3) is symmetrically fixed with reinforcing ribs (5) at equal distances. The reinforcing ribs (5) are semi-circular protrusions. The inner wall of the outer bushing (2) is symmetrically provided with locking grooves (6) at equal distances. The locking grooves (6) are semi-circular. The reinforcing ribs (5) and locking grooves (6) are arc-matched.

7. The corrosion-resistant bushing for automotive shock absorbers according to claim 1, characterized in that: The inner liner (9) is provided with a top seat (11) at the top. The outer wall of the inner liner (9) is provided with an external thread (12), and the inner wall of the top seat (11) is provided with an internal thread (13). The external thread (12) and the internal thread (13) are threaded together.

8. The corrosion-resistant bushing for automotive shock absorbers according to claim 1, characterized in that: The inner wall of the first rubber bushing (3) is symmetrically provided with guide grooves (8), and the outer wall of the second rubber bushing (4) is symmetrically fixedly connected with guide blocks (7), and the guide blocks (7) and guide grooves (8) are snapped together.

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