Oil seal for automobile gas spring

Abstract

The utility model discloses an oil seal for an automobile gas spring, which comprises a framework, a partition piston is arranged in the framework, an outer opening, an upper sealing washer, an inner lip, an oil groove, a lower sealing washer and a sealing ring are arranged on the framework, a bayonet is arranged on the side surface of the outer opening, and an outer lip is arranged on the bayonet; a fixing opening is formed in the side face of the framework, a fixing device is arranged in the fixing opening, and the fixing device comprises a front supporting plate, a rear supporting plate, a fixing ball, a fixing spring, a supporting rod, a sealing plate, a connecting ring and a pull ring. According to the device, the fixing balls, the fixing springs, the supporting rods and the pull rings are matched, the fixing balls make contact with the inner wall of the sealed oil tank, the fixing springs are in a tightened state, the framework is fixed to the inner wall of the sealed oil tank, and the fixing balls have certain rolling performance, cannot rub the inner wall of the sealed oil tank and have certain safety; only the pull ring needs to be pulled, so that mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of gas springs, in particular to an oil seal for automobile gas springs. Background Art

[0002] The existing gas spring technology mostly uses reinforcing bosses for gas spring oil seals. However, with this method, the skeleton is easy to fall off during use and is not fixed. For example, a Chinese patent discloses "a new gas spring oil seal structure" with the application number "CN202121183362.0". It uses multiple reinforcing bosses set at the bottom of the oil groove to strengthen the support of the sealing gaskets on both sides of the oil groove, thereby preventing the sealing gasket at the inner lip from being excessively deformed due to the depth of the oil groove, thereby improving the sealing performance. The depth of the oil groove between the gaps of the reinforcing bosses is also sufficient, thereby improving the sealing effect and inflation stability while facilitating the sliding of the piston rod along the inner lip, reducing friction resistance and facilitating the use of the gas spring. However, its structure is simple and it is easy to fall off during use, causing oil leakage and affecting the use of the gas spring. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide an oil seal for an automobile gas spring. Through the cooperation of a fixed ball, a slide plate, a front support plate, a rear support plate, a support rod, a connecting ring and a pull ring, the fixed ball contacts the inner wall of the sealed oil tank, and the fixed spring is in a tightened state, generating a large elastic force, so that the skeleton is fixed to the inner wall of the sealed oil tank, and there is no need to worry about the skeleton falling off. The fixed ball has a certain rolling property and will not rub against the inner wall of the sealed oil tank, and has a certain safety. When disassembling, only the pull ring needs to be pulled, which is more convenient. Through the connecting ring, other fixed balls can be driven to move together, which is more convenient and is conducive to disassembly and installation, and can effectively prevent oil from entering the fixed ball, and can also prevent oil leakage. Through the cooperation of the fixed ball and the axial extension part, the skeleton can be prevented from falling off, and the fixed ball can be auxiliary supported.

[0004] The utility model also provides an oil seal for an automobile gas spring as described above, comprising: a skeleton, a partition piston is arranged inside the skeleton, an outer port is fixedly connected to the upper surface of the skeleton, a bayonet is arranged on the side of the outer port, an outer lip port is arranged on the bayonet, an oil port is arranged in the middle of the skeleton, an upper sealing gasket is arranged on the skeleton, an inner lip port is arranged on the skeleton, an oil groove is arranged between the outer port and the skeleton, and a lower sealing gasket and a sealing ring are arranged on the lower surface of the skeleton; a fixed port is arranged on the side of the skeleton, the bayonet is located above the fixed port, a slide plate is arranged on the upper and lower surfaces of the fixed port, a slide rail is arranged on the slide plate, a front support plate and a rear support plate are slidably connected inside the slide rail, a fixing ball is arranged on the left side of the front support plate, a fixing spring is arranged between the front support plate and the rear support plate, a support rod is fixedly connected to the right side of the rear support plate, a sealing plate is arranged on the support rod, a connecting ring is arranged at the other end of the support rod, and a pull ring is arranged on the right side of the support rod. Through the above device, through the cooperation of the fixed ball, the fixed spring, the support rod and the pull ring, the fixed ball contacts the inner wall of the sealed oil tank, and the fixed spring is in a taut state, so that the skeleton is fixed to the inner wall of the sealed oil tank. The fixed ball has a certain rolling property and will not rub the inner wall of the sealed oil tank, so it has a certain safety. When disassembling, you only need to pull the pull ring, which is convenient for installation and disassembly.

[0005] According to the oil seal for automobile gas spring of the utility model, the inner lip is located inside the upper sealing gasket, and the inner lip is in contact with the oil port. Through the above device, the inner lip is convenient for sealing to prevent oil leakage.

[0006] According to the oil seal for automobile gas spring of the utility model, the outer lip is located at the top of the outer mouth, and the outer lip is in contact with the oil groove. Through the above device, the outer lip is sealed to prevent oil leakage.

[0007] According to the oil seal for automobile gas spring of the utility model, the side of the outer port is provided with an axial extension part, the axial extension part is located between the bayonet and the fixing port, and the diameter of the axial extension part is larger than the diameter of the frame. Through the above device, the axial extension part can be fixed to the upper part of the oil tank to prevent the frame from falling off due to the rolling of the fixing ball.

[0008] According to the oil seal for automobile gas spring described in the utility model, the sealing ring is located outside the oil port, and the diameter of the sealing ring is smaller than the depth of the fixed port. Through the above device, the sealing ring is convenient for sealing to prevent the internal oil from entering the interior of the partition piston.

[0009] According to the oil seal for automobile gas spring of the utility model, the lower sealing gasket is located outside the sealing ring, and the lower sealing gasket is in contact with the side surface of the frame. Through the above device, the lower sealing gasket is used to prevent the internal oil from leaking from the axial extension part.

[0010] According to the oil seal for automobile gas spring of the utility model, the side surfaces of the sealing plate are respectively fitted with the four sides of the fixing port, and a sealing ring is arranged between the sealing plate and the fixing port. Through the above device, the sealing ring prevents oil from entering the sealing plate and causing leakage.

[0011] According to the oil seal for automobile gas spring described in the utility model, a sealing ring is arranged between the support rod and the sealing plate, and an elastic ring is arranged inside the connecting ring. Through the above device, when the pull ring is pulled, the elastic ring can drive other fixed balls to move.

[0012] Beneficial Effects

[0013] Compared with the prior art, the oil seal for automobile gas springs, through the cooperation of the fixed ball, the slide plate, the front support plate, the rear support plate, the support rod, the connecting ring and the pull ring, the fixed ball contacts the inner wall of the sealed oil tank, the fixed spring is in a tightened state, and a large elastic force is generated, so that the skeleton is fixed to the inner wall of the sealed oil tank, and there is no need to worry about the skeleton falling off. The fixed ball has a certain rolling property and will not rub against the inner wall of the sealed oil tank, and has a certain safety. When disassembling, only the pull ring needs to be pulled, which is more convenient. Through the connecting ring, other fixed balls can be driven to move together, which is more convenient and conducive to disassembly and installation, and effectively prevents oil from entering the fixed ball, and also prevents oil leakage. Through the cooperation of the fixed ball and the axial extension part, the skeleton can be prevented from falling off, and the fixed ball can be auxiliary supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a front view of the oil seal for automobile gas spring of the utility model;

[0016] Figure 2 This is a bottom view of the oil seal for automobile gas spring of the utility model;

[0017] Figure 3 The utility model is an oil seal for automobile gas spring Figure 1 Middle vertical section view;

[0018] Figure 4 The utility model is an oil seal for automobile gas spring Figure 3 Enlarged view of point A in the middle.

[0019] Legend:

[0020] 1. Frame; 2. Oil groove; 3. Outer lip; 4. Inner lip; 5. Upper sealing gasket; 6. Fixed ball; 7. Front support plate; 8. Fixed spring; 9. Rear support plate; 10. Support rod; 11. Sealing plate; 12. Connecting ring; 13. Pull ring; 14. Slide plate; 15. Slide rail; 16. Sealing ring; 17. Lower sealing gasket; 18. Bayonet; 19. Partition piston; 20. Axial extension; 21. Fixed port; 22. Outer port. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4 The utility model embodiment is an oil seal for automobile gas spring, which includes: a skeleton 1, a partition piston 19 is arranged inside the skeleton 1, an outer port 22 is fixedly connected to the upper surface of the skeleton 1, a protective cover is clamped, an axial extension portion 20 is arranged on the side of the outer port 22 to prevent falling off, the axial extension portion 20 is located between the bayonet 18 and the fixed port 21, the diameter of the axial extension portion 20 is greater than the diameter of the skeleton 1, a bayonet 18 is arranged on the side of the outer port 22, a protective cover is clamped, an outer lip 3 is arranged on the bayonet 18, a seal is provided, the outer lip 3 is located at the top of the outer port 22, the outer lip 3 is in contact with the oil groove 2, the skeleton 1 is provided with a seal, and the outer lip 3 is located at the top of the outer port 22. The outer lip 3 is in contact with the oil groove 2. An oil port is provided in the middle of the frame 1 for oil inlet. An upper sealing gasket 5 is provided on the skeleton 1 to prevent oil leakage. An inner lip 4 is provided on the skeleton 1 for sealing. The inner lip 4 is located on the inner side of the upper sealing gasket 5. The inner lip 4 is fitted with the oil port. An oil groove 2 is provided between the outer port 22 and the skeleton 1 for installing a gas spring. A lower sealing gasket 17 and a sealing ring 16 are provided on the lower surface of the skeleton 1 for sealing. The sealing ring 16 is located on the outer side of the oil port. The diameter of the sealing ring 16 is smaller than the depth of the fixed port 21. The lower sealing gasket 17 is located on the outer side of the sealing ring 16. The lower sealing gasket 17 is fitted with the side surface of the skeleton 1.

[0023] A fixing port 21 is provided on the side of the skeleton 1, and the bayonet 18 is located above the fixing port 21. A slide plate 14 is provided on the upper and lower surfaces of the fixing port 21, and a slide rail 15 is provided on the slide plate 14. The front support plate 7 and the rear support plate 9 are slid, and the front support plate 7 and the rear support plate 9 are slidably connected inside the slide rail 15. A fixing ball 6 is provided on the left side of the front support plate 7 to fix it. A fixing spring 8 is provided between the front support plate 7 and the rear support plate 9 to give power. A support rod 10 is fixedly connected to the right side of the rear support plate 9. A sealing ring is provided between the support rod 10 and the sealing plate 11. A sealing plate 11 is provided on the support rod 10 to prevent oil leakage. The sides of the sealing plate 11 are respectively fitted with the four sides of the fixing port 21, and a sealing ring is provided between the sealing plate 11 and the fixing port 21 to seal. An elastic ring is provided inside the connecting ring 12 to drive the other fixed balls 6 to move. A connecting ring 12 is provided at the other end of the support rod 10, and a pull ring 13 is provided on the right side of the support rod 10 for easy disassembly by pulling.

[0024] Working principle: When in use, pull the pull ring 13, the elastic ring inside the connecting ring 12 drives the other fixed balls 6 to move, and the fixed spring 8 is retracted at this time. Put the frame 1 into the mouth of the oil tank, buckle the axial extension part 20 on the surface, loosen the pull ring 13, fix the frame on the oil tank, install the sealing gasket 5, and finally install the gas spring in the oil tank 2, and buckle the gas spring with the bayonet 18.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An oil seal for automobile gas spring, characterized in that: include: A frame (1), wherein a partition piston (19) is arranged inside the frame (1), an outer port (22) is fixedly connected to the upper surface of the frame (1), a bayonet (18) is arranged on the side of the outer port (22), an outer lip (3) is arranged on the bayonet (18), an oil port is arranged in the middle of the frame (1), an upper sealing gasket (5) is arranged on the frame (1), an inner lip (4) is arranged on the frame (1), an oil groove (2) is arranged between the outer port (22) and the frame (1), and a lower sealing gasket (17) and a sealing ring (16) are arranged on the lower surface of the frame (1); The frame (1) is provided with a fixing opening (21) on the side surface, the bayonet (18) is located above the fixing opening (21), the upper surface and the lower surface of the fixing opening (21) are both provided with slide plates (14), the slide plates (14) are both provided with slide rails (15), the interior of the slide rails (15) are slidably connected with a front support plate (7) and a rear support plate (9), a fixing ball (6) is provided on the left side of the front support plate (7), a fixing spring (8) is provided between the front support plate (7) and the rear support plate (9), a support rod (10) is fixedly connected to the right side of the rear support plate (9), a sealing plate (11) is provided on the support rod (10), a connecting ring (12) is provided at the other end of the support rod (10), and a pull ring (13) is provided on the right side of the support rod (10).

2. The oil seal for automobile gas spring according to claim 1, characterized in that: The inner lip (4) is located on the inner side of the upper sealing gasket (5), and the inner lip (4) is in contact with the oil port.

3. The oil seal for automobile gas spring according to claim 1, characterized in that: The outer lip (3) is located at the top of the outer port (22), and the outer lip (3) is in contact with the oil groove (2).

4. The oil seal for automobile gas spring according to claim 1, characterized in that: An axial extension portion (20) is provided on the side of the outer opening (22); the axial extension portion (20) is located between the bayonet opening (18) and the fixing opening (21); and the diameter of the axial extension portion (20) is greater than the diameter of the frame (1).

5. The oil seal for automobile gas spring according to claim 1, characterized in that: The sealing ring (16) is located outside the oil port, and the diameter of the sealing ring (16) is smaller than the depth of the fixing port (21).

6. The oil seal for automobile gas spring according to claim 1, characterized in that: The lower sealing gasket (17) is located outside the sealing ring (16), and the lower sealing gasket (17) is in contact with the side surface of the frame (1).

7. The oil seal for automobile gas spring according to claim 1, characterized in that: The side surfaces of the sealing plate (11) are respectively fitted with four sides of the fixing opening (21), and a sealing ring is provided between the sealing plate (11) and the fixing opening (21).

8. The oil seal for automobile gas spring according to claim 1, characterized in that: A sealing ring is provided between the support rod (10) and the sealing plate (11), and an elastic ring is provided inside the connecting ring (12).

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