Bidirectional damping shock absorber

Abstract

The utility model discloses a bi-directional damping shock absorber, which relates to the technical field of shock absorbers and comprises an outer tube, a rubber sealing gasket is arranged at the lower end of the outer tube, a first threaded hole is arranged at the upper end of the outer tube, a fixing screw ring is arranged on the inner side of the first threaded hole, a piston rod is arranged on the inner side of the fixing screw ring, and a piston rod is arranged on the outer side of the piston rod. A second threaded hole is formed in the inner side of the piston rod, an upper mounting base is arranged on the inner side of the second threaded hole, and mounting threads are arranged at the lower end of the fixing threaded ring and the lower end of the upper mounting base. According to the bidirectional damping shock absorber, through the arrangement of the fixing screw ring and the upper installation base, when the damping shock absorber meets faults and needs to be overhauled, the upper installation base is detached from the upper end of the piston rod by rotating the upper installation base, and then the fixing screw ring is detached from the upper end of the outer barrel pipe and penetrates through the piston rod to be taken out; in this way, the outer cylinder pipe and the outer oil cylinder can be easily separated, and maintenance can be easily carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a bidirectional damping shock absorber. Background Art

[0002] Shock absorbers are a commonly used motorcycle spare part. The need for shock absorbers is due to the fact that springs cannot stabilize immediately after deformation and will continue to be compressed and relaxed for a period of time. Therefore, shock absorbers can absorb the vibration caused by the wheels encountering uneven roads, making the ride comfortable. Existing shock absorbers generally include a pressure cylinder fixed to the vehicle body, the interior of the pressure cylinder contains high-viscosity damping oil, and is provided with a piston. A connecting rod is passed through one end of the pressure cylinder, one end of the connecting rod is fixed to the wheel frame, and the other end is fixed to the piston in the pressure cylinder, and the outer sleeve of the connecting rod is provided with a spring. When encountering an uneven road surface or braking, the vehicle body can drive the piston through the connecting rod to compress the damping oil inside the pressure cylinder, thereby obtaining a buffering effect.

[0003] The existing damping shock absorbers are difficult to disassemble during installation and use, and the subsequent maintenance process is extremely cumbersome, and often new damping shock absorbers can only be replaced. In addition, oil leakage is inevitable during the operation of the damping shock absorber. Over time, the oil inside the damping shock absorber will be consumed a lot, affecting the working process. However, due to the difficulty in disassembly, adding oil is extremely cumbersome, which brings certain adverse effects to people's use process. In order to solve the shortcomings of the existing technology, we propose a bidirectional damping shock absorber. Utility Model Content

[0004] The main purpose of the utility model is to provide a bidirectional damping shock absorber, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A two-way damping shock absorber comprises an outer tube, a rubber sealing pad is arranged at the lower end of the outer tube, a first threaded hole is arranged at the upper end of the outer tube, a fixing screw ring is arranged on the inner side of the first threaded hole, a piston rod is arranged on the inner side of the fixing screw ring, a second threaded hole is arranged on the inner side of the piston rod, an upper mounting seat is arranged on the inner side of the second threaded hole, mounting threads are arranged at the lower ends of the fixing screw ring and the upper mounting seat, a piston valve body is arranged at the lower end of the piston rod, and an extension valve and a flow valve are arranged on the inner side of the piston valve body.

[0007] Preferably, an outer oil cylinder is provided on the inner side of the outer cylinder tube, a third threaded hole is provided at the lower end of the outer oil cylinder, a lower mounting seat is provided on the inner side of the third threaded hole, an oil seal is provided on the upper end of the outer oil cylinder, an oil replenishing port is provided at the lower end of the piston rod, an inner oil cylinder is provided on the inner side of the fixing screw ring, an overflow valve is provided at the lower end of the inner oil cylinder, and a plurality of connecting blocks are provided at the lower end of the inner oil cylinder.

[0008] Preferably, a through hole is provided on the inner side of the outer tube, and the rubber sealing pad is detachably connected to the outer tube through the through hole of the outer tube.

[0009] Preferably, the fixing screw ring is detachably connected to the outer tube via a first threaded hole, a through hole is provided on the inner side of the fixing screw ring, the piston rod is slidably connected to the fixing screw ring via the through hole of the fixing screw ring, and the upper mounting seat is detachably connected to the piston rod via a second threaded hole.

[0010] Preferably, the outer oil cylinder is slidably connected to the outer cylinder tube through the through hole of the outer cylinder tube, a through hole is provided on the inner side of the oil seal, the piston rod is slidably connected to the oil seal through the through hole of the oil seal, and the oil replenishing port is slidably connected to the inner wall of the inner oil cylinder.

[0011] Preferably, the second threaded hole extends from one end of the piston rod close to the upper mounting seat to one end of the oil replenishing port, the piston rod is connected to the oil replenishing port through the second threaded hole, a through hole is provided on the inner side of the inner oil cylinder, and the overflow valve is detachably connected to the inner oil cylinder through the through hole of the inner oil cylinder.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, by providing a fixing screw ring and an upper mounting seat, when the damping shock absorber encounters a fault and needs to be repaired, the upper mounting seat is removed from the upper end of the piston rod by rotating the upper mounting seat, and then the fixing screw ring is removed from the upper end of the outer tube and taken out through the piston rod. In this way, the outer tube and the outer oil cylinder can be easily separated, and maintenance can be carried out relatively easily without replacing a new shock absorber, which saves workload and reduces costs.

[0015] 2. In the utility model, the piston rod is connected with the oil filling port through the provided oil filling port, and the second threaded hole on the inner side of the piston rod extends from one end close to the upper mounting seat to one end of the oil filling port. When the damping shock absorber affects the working process due to excessive oil leakage, the upper mounting seat can be removed from the upper end of the piston rod by rotating the upper mounting seat, and oil can be added to the inside of the damping shock absorber through the second threaded hole and the oil filling port. There is no need to disassemble the entire shock absorber. The whole working process is relatively easy and suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the upper structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the lower end structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the piston rod structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the outer oil cylinder of the utility model;

[0021] Figure 6 It is a schematic diagram of the oil seal structure of the utility model;

[0022] Figure 7 It is a schematic diagram of the structure of the inner oil cylinder of the utility model.

[0023] In the figure: 1. outer tube; 2. rubber sealing pad; 3. outer oil cylinder; 4. lower mounting seat; 5. fixing screw ring; 6. piston rod; 7. upper mounting seat; 8. mounting thread; 9. first threaded hole; 10. second threaded hole; 11. piston valve body; 12. extension valve; 13. oil replenishing port; 14. oil seal; 15. inner oil cylinder; 16. overflow valve; 17. third threaded hole; 18. connecting block; 19. circulation valve. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] Embodiment 1, as Figure 1-4As shown, the two-way damping shock absorber includes an outer tube 1, an upper mounting seat 7 and a lower mounting seat 4 which are respectively connected to corresponding automobile components. When the frame or the body of the automobile is in motion, the lower mounting seat 4 and the upper mounting seat 7 are driven to move in opposite directions, so that the piston rod 6 slides in the direction of the lower mounting seat 4, thereby driving the piston valve port 12 to slide downward. As the volume of the lower end of the piston valve body 11 is reduced, the oil inside the damping shock absorber passes through the flow valve 19 arranged on the inner side of the piston valve body 11 and flows upward. The piston rod 6 occupies a part of the space at the upper end of the piston valve body 11, so that the increased volume of the oil at the upper end of the piston valve body 11 is smaller than the decreased volume of the oil at the lower end of the piston valve body 11. Therefore, a part of the oil at the lower end of the piston valve body 11 rushes through the overflow valve 16 and enters the gap between the outer oil cylinder 3 and the inner oil cylinder 15. Since there is air between the outer oil cylinder 3 and the inner oil cylinder 15, it will be compressed after being squeezed. When it is compressed to a certain extent, it will force the inflowing oil to reversely rush through the overflow valve 16 and return to the inner oil cylinder 15.

[0026] Embodiment 2, as Figure 1-4 As shown, the two-way damping shock absorber is disassembled from the upper end of the piston rod 6 by rotating the upper mounting seat 7, and then the fixing screw ring 5 is disassembled from the upper end of the outer tube 1 and taken out through the piston rod 6, so that the outer tube 1 and the outer oil cylinder 3 can be easily separated. After the upper mounting seat 7 is disassembled from the upper end of the piston rod 6 by rotating the upper mounting seat 7, oil can be added to the interior of the damping shock absorber through the second threaded hole 10 and the oil filling port 13 without disassembling the entire shock absorber.

[0027] How it works

[0028] It should be noted that the utility model is a two-way damping shock absorber. When in use, the upper mounting seat 7 and the lower mounting seat 4 are respectively connected to corresponding automobile components. During the movement of the automobile, when the frame or the body produces relative vibration, the lower mounting seat 4 and the upper mounting seat 7 are driven to move in opposite directions, so that the piston rod 6 slides in the direction of the lower mounting seat 4, thereby driving the piston valve port 12 to slide downward. Since the volume of the lower end of the piston valve body 11 is reduced, the oil inside the damping shock absorber passes through the flow valve 19 arranged on the inner side of the piston valve body 11 and flows to the upper end, and a part of the space at the upper end of the piston valve body 11 is occupied by the piston rod 6. In this way, the increased volume of the oil at the upper end of the piston valve body 11 is less than the reduced volume of the oil at the lower end of the piston valve body 11. Therefore, there is also a Part of the oil breaks open the overflow valve 16 and enters the gap between the outer oil cylinder 3 and the inner oil cylinder 15. Since there is air between the outer oil cylinder 3 and the inner oil cylinder 15, it will be compressed after being squeezed. When it is compressed to a certain extent, it will force the inflowing oil to reversely break open the overflow valve 16 and return to the inner oil cylinder 15. The upper mounting seat 7 is removed from the upper end of the piston rod 6 by rotating the upper mounting seat 7, and then the fixing screw ring 5 is removed from the upper end of the outer tube 1 and taken out through the piston rod 6. In this way, the outer tube 1 and the outer oil cylinder 3 can be easily separated. After the upper mounting seat 7 is removed from the upper end of the piston rod 6 by rotating the upper mounting seat 7, oil can be added to the interior of the damping shock absorber through the second threaded hole 10 and the oil filling port 13 without disassembling the entire shock absorber.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bidirectional damping shock absorber, comprising an outer tube (1), characterized in that: A rubber sealing pad (2) is provided at the lower end of the outer tube (1), a first threaded hole (9) is provided at the upper end of the outer tube (1), a fixing screw ring (5) is provided on the inner side of the first threaded hole (9), a piston rod (6) is provided on the inner side of the fixing screw ring (5), a second threaded hole (10) is provided on the inner side of the piston rod (6), an upper mounting seat (7) is provided on the inner side of the second threaded hole (10), mounting threads (8) are provided at the lower ends of the fixing screw ring (5) and the upper mounting seat (7), a piston valve body (11) is provided at the lower end of the piston rod (6), and an extension valve (12) and a flow valve (19) are provided on the inner side of the piston valve body (11).

2. The bidirectional damping shock absorber according to claim 1, characterized in that: An outer oil cylinder (3) is arranged on the inner side of the outer cylinder tube (1), a third threaded hole (17) is arranged at the lower end of the outer oil cylinder (3), a lower mounting seat (4) is arranged on the inner side of the third threaded hole (17), an oil seal (14) is arranged on the upper end of the outer oil cylinder (3), an oil replenishing port (13) is arranged at the lower end of the piston rod (6), an inner oil cylinder (15) is arranged on the inner side of the fixing screw ring (5), a relief valve (16) is arranged at the lower end of the inner oil cylinder (15), and a plurality of connection blocks (18) are arranged at the lower end of the inner oil cylinder (15).

3. The bidirectional damping shock absorber according to claim 1, characterized in that: A through hole is provided on the inner side of the outer tube (1), and the rubber sealing pad (2) is detachably connected to the outer tube (1) through the through hole of the outer tube (1).

4. The bidirectional damping shock absorber according to claim 1, characterized in that: The fixing screw ring (5) is detachably connected to the outer tube (1) via a first threaded hole (9); a through hole is provided on the inner side of the fixing screw ring (5); the piston rod (6) is slidably connected to the fixing screw ring (5) via the through hole of the fixing screw ring (5); and the upper mounting seat (7) is detachably connected to the piston rod (6) via a second threaded hole (10).

5. The bidirectional damping shock absorber according to claim 2, characterized in that: The outer oil cylinder (3) is slidably connected to the outer cylinder tube (1) via a through hole of the outer cylinder tube (1); a through hole is provided on the inner side of the oil seal (14); the piston rod (6) is slidably connected to the oil seal (14) via the through hole of the oil seal (14); and the oil replenishing port (13) is slidably connected to the inner wall of the inner oil cylinder (15).

6. The bidirectional damping shock absorber according to claim 2, characterized in that: The second threaded hole (10) extends from one end of the piston rod (6) close to the upper mounting seat (7) to one end of the oil replenishing port (13); the piston rod (6) is connected to the oil replenishing port (13) through the second threaded hole (10); a through hole is provided on the inner side of the inner oil cylinder (15); and the overflow valve (16) is detachably connected to the inner oil cylinder (15) through the through hole of the inner oil cylinder (15).

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