A novel oil seal anti-leakage structure shock absorber and vehicle

Abstract

The invention relates to the technical field of shock absorbers, and discloses a novel oil-sealed anti-oil-seepage structure shock absorber and a vehicle. The novel oil-sealed anti-oil-seepage structure shock absorber comprises a shock absorber body, a protective cover and an oil suction part. The shock absorber body comprises a shock absorber housing, an oil seal and a piston rod. The piston rod passes through the oil seal. The protective cover is installed on the shock absorber housing and is located on the side where the piston rod extends out. An installation space is provided between the protective cover and the shock absorber housing. The oil suction part is installed in the installation space. The oil suction part is arranged around the oil seal. An oil storage space is provided between the protective cover and the shock absorber housing. The oil storage space is connected to the installation space. Hydraulic oil excessively absorbed by the oil suction part can enter the oil storage space for storage. The oil absorption felt and the oil storage space are combined to provide double protection, thereby maximizing the oil absorption capacity and avoiding the problem of claims caused by slight oil seepage to the outer surface, which affects the product appearance and is misjudged as product failure.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, in particular to a shock absorber with a novel oil-sealed anti-oil leakage structure and a vehicle. Background Art

[0002] Due to the effects of pressure and other factors, there will be a certain amount of oil leakage at the lip of the shock absorber oil seal. Slight oil leakage will not affect the use of the shock absorber, but it will affect the appearance of the product and easily lead to claims caused by misjudgment of product failure due to slight oil leakage. The traditional way to solve this problem is to add oil-absorbing material near the lip of the shock absorber oil seal, which can absorb part of the oil brought out by the piston rod and reduce its overflow. The main drawback of this method is that due to the limitation of structural space, the amount of oil that the oil-absorbing felt can absorb is limited, and it cannot effectively solve the above-mentioned problems caused by oil leakage. In view of the above-mentioned problems, the present application is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a novel oil-sealed anti-oil seepage structure shock absorber, which adopts an anti-oil seepage protective cover on the basis of adding oil-absorbing felt, so that the two are combined to achieve double protection and maximize the oil absorption capacity.

[0004] The present invention is achieved through the following technical solutions.

[0005] A novel oil-seal anti-oil seepage structure shock absorber of the present invention comprises a shock absorber body, a protective cover and an oil suction part, wherein the shock absorber body comprises a shock absorber housing, an oil seal and a piston rod, wherein the piston rod passes through the oil seal, the protective cover is mounted on the shock absorber housing and is located on the side where the piston rod extends out, an installation space is provided between the protective cover and the shock absorber housing, the oil suction part is installed in the installation space, the oil suction part is arranged around the oil seal, an oil storage space is provided between the protective cover and the shock absorber housing, the oil storage space is connected to the installation space, and hydraulic oil excessively absorbed by the oil suction part can enter the oil storage space for storage.

[0006] Furthermore, the oil storage space is arranged at a side surface of the shock absorber housing.

[0007] Furthermore, the oil storage space is arranged in an annular shape.

[0008] Furthermore, the installation space is connected to the oil storage space through a circulation hole.

[0009] Furthermore, the oil absorption portion extends to the flow hole.

[0010] Furthermore, the oil absorption portion closes the flow hole.

[0011] Furthermore, the protective cover is provided with an oil drain hole, the oil drain hole is connected to the installation space, and the oil drain hole and the flow hole are respectively arranged on both sides of the shock absorber housing.

[0012] Furthermore, the oil suction portion is annular and is arranged around the oil seal.

[0013] Furthermore, the oil absorption part includes oil absorption felt.

[0014] A vehicle is provided with the novel oil-sealed anti-oil leakage structure shock absorber.

[0015] The beneficial effects of the present invention are as follows: by arranging the oil-absorbing felt, the oil brought out by the piston rod, the evaporated oil and the oil seeping out from the oil seal can be absorbed; under the action of the protective cover, the oil can be prevented from seeping out to the surface, so that the oil-absorbing felt has sufficient time to absorb the oil; and, by arranging the oil storage space, the problem of insufficient oil absorption caused by the difficulty in arranging a larger volume of the oil-absorbing felt in the traditional way is solved; the oil storage space can store the oil absorbed by the oil-absorbing felt in excess, and the oil in the oil storage space can be prevented from flowing out through the structural arrangement; the combination of the oil-absorbing felt and the oil storage space provides double protection, thereby maximizing the oil absorption capacity and avoiding the problem of claims caused by slight oil seepage to the outer surface affecting the product appearance and misjudging it as product failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of a novel oil-sealed anti-oil seepage structure shock absorber of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle oil seal;

[0020] Figure 3 This is an enlarged structural diagram of the oil seal of Example 3. DETAILED DESCRIPTION

[0021] Combine the following Figure 1-3 The present invention is described in detail.

[0022] Embodiment 1:

[0023] A novel oil-sealed anti-oil seepage structure shock absorber according to the present invention is as follows: Figure 1 , 2 , including a shock absorber body, a protective cover 3 and an oil suction part 2. The shock absorber body includes a shock absorber housing 7, an oil seal 1, a piston rod 6, a guide 10, a piston valve assembly 11, a bottom valve assembly 12 and a mounting bracket 13. The oil 4 is located in the working chamber. The piston rod 6 passes through the oil seal 1. The protective cover 3 is installed on the shock absorber housing 7 and is located on the side where the piston rod 6 extends out. The protective cover 3 is a cylinder with one side open and is sleeved on one end of the shock absorber housing 7. The fixing method is interference fit installation or welding connection. An installation space 8 is provided between the protective cover 3 and the shock absorber housing 7. The installation space 8 is the gap between the bottom surface of the protective cover 3 and the left end surface of the shock absorber body. The oil suction part 2 is installed in the installation space 8 to absorb the leaked hydraulic oil. The oil suction part 2 is arranged around the oil seal 1. In this embodiment, the oil suction part 2 is annular and arranged around the oil seal 1. An oil storage space 5 is provided between the protective cover 3 and the shock absorber housing 7. The oil storage space 5 is connected to the installation space 8. Figure 2 The oil storage space 5 is located between the outer cylindrical surface of the protective cover 3 and the circumferential surface of the shock absorber housing 7, so that an oil suction part 2 with a volume as large as possible can be installed in the installation space 8, and the hydraulic oil excessively absorbed by the oil suction part 2 can enter the oil storage space 5 for storage.

[0024] Preferably, the oil storage space 5 is annularly arranged, surrounding the shock absorber housing 7 for a circle to achieve a larger volume.

[0025] Preferably, the installation space 8 is connected to the oil storage space 5 via a flow hole 9, such as Figure 2 In the middle direction, the flow hole 9 is arranged at the lower side of the installation space 8 and the oil storage space 5. Except for the flow hole position, other positions are blocked and closed. The closing method is achieved by setting a protrusion on the inner wall of the shock absorber housing 7 or the protective cover 3. The setting of the flow hole 9 can avoid the leakage of the hydraulic oil stored in the oil storage space 5 due to vibration, posture change and the like to the greatest extent.

[0026] Preferably, the oil absorption part 2 extends to the circulation hole 9. In this embodiment, the oil absorption part 2 is oil absorption felt made of polypropylene or non-woven fabric. A part of the oil absorption felt extends to the circulation hole 9, which can make the hydraulic oil excessively absorbed in the oil absorption felt enter the oil storage space faster.

[0027] Optionally, an oil drain hole 14 is provided on the protective cover 3, and the oil drain hole 14 is connected to the installation space 8. When there is too much oil seepage, the oil can be discharged outward through the oil drain hole 14, and the amount of oil seeping from the oil drain hole 14 can be used to determine whether there is a problem with the shock absorber.

[0028] The oil drain hole 14 and the flow hole 9 are respectively arranged on both sides of the shock absorber housing 7 .

[0029] Embodiment 2: On the basis of embodiment 1, the oil absorption felt seals the flow hole 9, so as to further prevent the hydraulic oil in the oil storage space from flowing out due to bumps, shock absorber posture and other reasons.

[0030] Embodiment 3: Based on Embodiment 1 or 2, Figure 3 A pressure component 15 is installed at the installation space 8. The pressure component 15 is sleeved on the piston rod. The pressure component is annular and can be made of plastic, metal or rubber. There is a certain friction between the pressure component 15 and the piston rod 6. An O-ring is installed at the pressure component 15 and the oil seal lip. The other side of the pressure component 15 is against the inner wall of the protective cover 3. The pressure component 15 is against the oil absorption felt close to the circulation hole 9. When the piston rod extends outward, the pressure component 15 does not move under the action of the protective cover 3. When the piston rod retracts, the pressure component 15 compresses the O-ring and the oil absorption felt close to the circulation hole 9 under the action of friction, so that the oil in the oil absorption felt can be discharged from the position close to the circulation hole 9 and flow into the oil storage space, thereby avoiding the phenomenon that the hydraulic oil excessively absorbed in the oil absorption felt fails to enter the oil storage space in time after being discharged and causes oil leakage to the surface.

[0031] A vehicle is provided with a novel oil-sealed anti-oil leakage structure shock absorber according to any one of the first to third embodiments.

[0032] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology in this field to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel oil-sealed anti-leakage structure shock absorber, characterized in that: The invention comprises a shock absorber body, a protective cover (3) and an oil suction part (2), wherein the shock absorber body comprises a shock absorber housing (7), an oil seal (1) and a piston rod (6), wherein the piston rod (6) passes through the oil seal (1), the protective cover (3) is mounted on the shock absorber housing (7) and is located on the side where the piston rod (6) protrudes, an installation space (8) is provided between the protective cover (3) and the shock absorber housing (7), the oil suction part (2) is installed in the installation space (8), the oil suction part (2) is arranged around the oil seal (1), and the protective cover (3) is provided on the side where the piston rod (6) protrudes. An oil storage space (5) is provided between the cover (3) and the shock absorber housing (7), the oil storage space (5) being connected to the installation space (8), and the hydraulic oil excessively absorbed by the oil suction part (2) can enter the oil storage space (5) for storage; the installation space (8) and the oil storage space (5) are connected via a circulation hole (9); an oil drain hole (14) is provided on the protective cover (3), the oil drain hole being connected to the installation space (8), and the oil drain hole (14) and the circulation hole (9) are respectively provided on both sides of the shock absorber housing (7).

2. A novel oil-sealed anti-oil seepage structure shock absorber according to claim 1, characterized in that: The oil storage space (5) is arranged on a side of the shock absorber housing (7).

3. A novel oil-sealed anti-oil seepage structure shock absorber according to claim 2, characterized in that: The oil storage space (5) is arranged in an annular shape.

4. A novel oil-sealed anti-oil seepage structure shock absorber according to claim 3, characterized in that: The oil absorption portion (2) extends to the flow hole (9).

5. The novel oil-sealed anti-oil leakage structure shock absorber according to claim 4 is characterized in that: The oil absorption portion (2) closes the flow hole (9).

6. A novel oil-sealed anti-oil leakage structure shock absorber according to any one of claims 1 to 5, characterized in that: The oil suction portion (2) is annular and is arranged around the oil seal (1).

7. A novel oil-sealed anti-oil leakage structure shock absorber according to claim 6, characterized in that: The oil absorption part (2) comprises oil absorption felt.

8. A vehicle, characterized in that: The vehicle is provided with a novel oil-sealed anti-oil leakage structure shock absorber as described in any one of claims 1 to 7.

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