Wear-resistant oil seal of bush annular structure
By adopting a bushing ring structure in the oil seal, combined with the design of the rubber sleeve, seal ring and mounting plate, the oil leakage problem caused by the gap between the bushing and the hydraulic cylinder is solved, and a better sealing effect is achieved.
Patent Information
- Application Number
- CN202323516890.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-21
AI Technical Summary
Existing bushings are prone to gaps at the connections with hydraulic cylinders, resulting in failure of oil sealing and oil leakage problems.
The bushing ring structure is adopted. By setting up a rubber sleeve and sealing ring on the plug, and using the mounting plate to cooperate with the sealing groove of the fixing ring, the sealing performance between the bushing and the plug is ensured, and the use of convex rings and clamps are limited. Position sealing ring, fill the lower and upper sealing rings to seal the gaps and enhance the sealing of the cylinder.
It effectively avoids the gap between the bushing and the hydraulic cylinder, ensures the sealing of the oil seal, prevents oil leakage, and improves the sealing effect of the shock absorber cylinder.
Smart Images
Figure CN222208764U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of wear-resistant oil seals, and in particular to a wear-resistant oil seal with a bushing annular structure. Background Art
[0002] Oil seals are mechanical components used to prevent oil leakage, especially lubricating oil leakage. The reciprocating joints of the upper cylinder of the motor vehicle hydraulic shock absorber are equipped with oil seals to prevent the overflow of internal liquid and the invasion of external dirt and gas, which affect the shock absorption effect. Currently, most of them are single-layer rubber or nylon oil seals. Among them, rubber oil seals have poor wear resistance in contact and friction with the moving cylinder. When colliding with hard dirt, the contact surface is easily torn. The temperature of the contact surface rises after friction, which is easy to cause permanent deformation. Nylon oil seals have poor elasticity and poor subsequent deformation ability after eccentric wear.
[0003] The existing announcement number is CN2427356Y, and the name is a multi-layer oil seal for a hydraulic shock absorber of a motor vehicle. The inner surface of the nylon bushing is serrated. In addition, a sealing ring cavity filled with hydraulic oil is formed outside the rubber oil seal, and the ring cavity is lined with a steel sleeve. The utility model composed of the above scheme has good wear resistance of the nylon bushing. Once wear occurs, it can be squeezed and sealed at any time under the action of the oil seal sleeve with good elasticity on the outer layer and the oil pressure ring cavity outside. It has good strain capacity and can achieve this purpose.
[0004] With respect to the above-mentioned related technologies, the inventors found that in order to improve the airtightness of the oil seal, a bushing is provided to cooperate with a fixed oil seal sleeve for sealing, and an oil chamber is provided inside to form a sealed chamber in cooperation with the oil seal sleeve, thereby blocking the hydraulic oil. However, the bushing body does not have a structure for sealing connection with the hydraulic column, which may easily lead to a gap at the connection between the bushing and the hydraulic column, thereby causing oil leakage through the gap in the later stage. Utility Model Content
[0005] In order to overcome the problem that the existing bushing body does not have a structure for sealing connection with the hydraulic column, which may easily lead to a gap at the connection between the bushing and the hydraulic column, thereby easily causing oil leakage through the gap, the present application provides a wear-resistant oil seal with a bushing annular structure.
[0006] The present application provides a wear-resistant oil seal with a bushing annular structure, which adopts the following technical solution:
[0007] A wear-resistant oil seal with a bushing annular structure comprises a shock absorber body and an oil seal, wherein an insert sleeve is vertically passed through and fixed on the top of the lower cylinder of the shock absorber body, and a fixing ring is horizontally fixed on the top of the lower cylinder of the shock absorber body, a support ring is horizontally fixed on the outer circumferential surface of the insert sleeve, and two support rings are arranged in the vertical direction, and rubber rings are sleeved on the outside of the two support rings, a sealing ring is sleeved on the insert sleeve, and the sealing ring is arranged between the two support rings, the oil seal comprises a bushing, the bushing is sleeved on the insert sleeve, a mounting plate is horizontally passed through and fixed on the bottom end of the bushing, and the mounting plate is fixed on the fixing ring by fixing screws, and the outer circumferential surfaces of the rubber ring and the sealing ring are pressed against the inner circumferential surface of the bushing.
[0008] By adopting the above technical scheme, during use, a rubber ring is first sleeved on the insert sleeve at the top of the lower column of the shock absorber body, a sleeve groove is opened on the inner circumferential surface of the rubber ring, the sleeve groove on the rubber ring is elastically fixed on the support ring of the insert sleeve, and a sealing ring is sleeved on the outside of the insert sleeve, and then the bushing on the oil seal is vertically sleeved on the insert sleeve, and at the same time, the mounting plate at the bottom end of the bushing and the fixing ring at the top of the lower column of the shock absorber body are fixed together by bolts, the inner circumferential surface of the sleeve is pressed against the rubber ring and the outer circumferential surface of the rubber ring, and the gap between the bushing and the insert sleeve is sealed by the rubber ring and the rubber ring to avoid oil leakage in the later stage, thereby completing the sealing assembly of the bushing and the insert sleeve.
[0009] Optionally, sealing grooves are provided on adjacent end surfaces of the fixing ring and the mounting plate, and a sealing ring is installed between the sealing grooves of the fixing ring and the mounting plate.
[0010] By adopting the above technical solution, sealing grooves are provided on the adjacent end faces of the fixing ring and the mounting plate, and the fixing ring and the mounting plate use the sealing grooves to press the sealing ring. The deformed sealing ring blocks the gap between the fixing ring and the mounting plate, thereby maintaining the sealing of the connection between the oil seal and the shock absorber body.
[0011] Optionally, a convex ring is horizontally fixed at the bottom of the inner circumferential surface of the bushing, and a plurality of clamping blocks are evenly fixed on the inner circumferential surface of the bushing.
[0012] By adopting the above technical solution, the convex ring and the block arranged on the inner circumferential surface of the middle bushing are used to limit the pressure on the sealing ring, so as to prevent the sealing ring from being skewing due to the shock-absorbing oil in the later stage, causing the sealing ring to be skewed, resulting in poor sealing effect of the sealing ring.
[0013] Optionally, a groove and a clamping groove are provided on the outer circumferential surface of the sealing ring, and the convex ring and the clamping block are pressed in the groove and the clamping groove of the sealing ring.
[0014] By adopting the above technical solution, the sealing ring is pressed by the convex ring and the block of the bushing during use, and the sealing ring is limited and pressed, so as to avoid the sealing ring being slanted due to the washing of the shock-absorbing oil in the later stage.
[0015] Optionally, a lower sealing groove is horizontally opened at the lower portion of the inner circumference of the bushing, and a lower sealing ring is filled in the lower sealing groove.
[0016] By adopting the above technical solution, a lower sealing groove is provided at the lower part of the inner circumferential surface of the bushing at the upper end of the insert tube, and a lower sealing ring filled in the lower sealing groove is pressed against the upper end of the insert tube to seal the gap between the bushing and the insert tube and maintain the sealing of the connection between the bushing and the insert tube.
[0017] Optionally, an upper sealing groove is horizontally opened on the upper portion of the inner circumference of the bushing, and a plurality of upper sealing grooves are arranged along the vertical direction.
[0018] By adopting the above technical solution, a plurality of upper sealing grooves vertically opened on the upper part of the inner circumference of the bushing are used to seal the upper column of the shock absorber body, thereby improving the sealing performance of the upper column of the shock absorber body.
[0019] Optionally, a plurality of plug posts are evenly and vertically fixed on the upper and lower sides of the upper sealing groove of the bushing, and an upper sealing ring is filled in the upper sealing groove of the bushing.
[0020] By adopting the above technical solution, the upper sealing ring filled in the upper sealing groove is used, and the inner circumferential surface of the upper sealing ring is pressed against the outer wall of the upper cylinder of the shock absorber body, thereby sealing the gap between the upper cylinder of the shock absorber body and the bushing.
[0021] Optionally, a plurality of slots are evenly and vertically provided on the upper and lower end surfaces of the upper sealing ring, and the slots on the upper sealing ring are plugged into the plug posts on the upper sealing groove.
[0022] By adopting the above technical solution, the slot on the middle upper sealing ring is connected with the plug post on the upper sealing groove to limit the upper sealing ring in the upper sealing groove, thereby preventing the upper sealing ring from being squeezed out of the upper sealing groove when the upper column of the vibrator body is extended, thereby preventing the sealing of the upper column of the vibrator body from being affected.
[0023] To summarize, the present application includes at least one of the following beneficial technical effects: during use, a rubber ring is first sleeved on the insert sleeve at the top of the lower cylinder of the shock absorber body, a sleeve groove is opened on the inner circumferential surface of the rubber ring, the sleeve groove on the rubber ring is elastically fixed on the support ring of the insert sleeve, and a sealing ring is sleeved on the outside of the insert sleeve, and then the bushing on the oil seal is vertically sleeved on the insert sleeve, and at the same time, the mounting plate at the bottom end of the bushing is fixed together with the fixing ring at the top of the lower cylinder of the shock absorber body by bolts, the inner circumferential surface of the sleeve is pressed against the rubber ring and the outer circumferential surface of the rubber ring, and the gap between the bushing and the insert sleeve is sealed by the rubber ring and the rubber ring to avoid oil leakage in the later stage, thereby completing the sealed assembly of the bushing and the insert sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0025] Figure 2It is a schematic diagram of the structure of the embodiment of the present application in an exploded state;
[0026] Figure 3 is a schematic structural diagram of the shock absorber body in a disassembled state in an embodiment of the present application;
[0027] Figure 4 is a schematic structural diagram of an oil seal in an exploded state according to an embodiment of the present application;
[0028] Figure 5 It is a schematic diagram of the structure of the upper sealing ring in the disassembled state in the embodiment of the present application.
[0029] Explanation of the reference numerals: 1. shock absorber body; 11. fixing ring; 12. insert sleeve; 121. support ring; 122. rubber sleeve; 13. sealing groove; 14. sealing ring; 2. oil seal; 21. bushing; 211. convex ring; 212. block; 213. lower sealing groove; 214. upper sealing groove; 22. mounting plate; 23. fixing screw; 24. sealing ring; 25. lower sealing ring; 26. upper sealing ring; 261. slot. DETAILED DESCRIPTION
[0030] The present application is further described in detail below in conjunction with the accompanying drawings.
[0031] The present application embodiment discloses a wear-resistant oil seal with a bushing annular structure. Figure 1 , Figure 2 , Figure 3 and Figure 4 A wear-resistant oil seal with a bushing annular structure comprises a shock absorber body 1 and an oil seal 2, wherein an insert sleeve 12 is vertically penetrated and fixed on the top of the lower cylinder of the shock absorber body 1, and a fixing ring 11 is horizontally fixed on the top of the lower cylinder of the shock absorber body 1, a support ring 121 is horizontally fixed on the outer circumferential surface of the insert sleeve 12, and two support rings 121 are arranged in the vertical direction, and rubber sleeves 122 are sleeved on the outside of the two support rings 121, a sealing ring 24 is sleeved on the insert sleeve 12, and the sealing ring 24 is arranged between the two support rings 121, the oil seal 2 comprises a bushing 21, the bushing 21 is sleeved on the insert sleeve 12, a mounting plate 22 is horizontally penetrated and fixed on the bottom end of the bushing 21, and the mounting plate 22 is fixed on the fixing ring 11 by fixing screws 23, and the outer circumferential surfaces of the rubber sleeve 122 and the sealing ring 24 are pressed against the inner circumferential surface of the bushing 21.
[0032] By adopting the above technical scheme, during use, a rubber ring 122 is first sleeved on the insert sleeve 12 at the top of the lower cylinder of the shock absorber body 1, and a sleeve groove is opened on the inner circumferential surface of the rubber ring 122. The sleeve groove on the rubber ring 122 is elastically fixed on the support ring 121 of the insert sleeve 12, and a sealing ring 14 is sleeved on the outside of the insert sleeve 12. Then, the bushing 21 on the oil seal 2 is vertically sleeved on the insert sleeve 12, and the mounting plate 22 at the bottom end of the bushing 21 is fixed together with the fixing ring 11 at the top of the lower cylinder of the shock absorber body 1 by bolts. The inner circumferential surface of the sleeved bushing 21 is pressed against the rubber ring 122 and the outer circumferential surface of the rubber ring 122, and the gap between the bushing 21 and the insert sleeve 12 is sealed by the rubber ring 122 and the rubber ring 122 to avoid oil leakage in the later stage, thereby completing the sealing assembly of the bushing 21 and the insert sleeve 12.
[0033] Reference Figure 3 and Figure 4 The fixing ring 11 and the mounting plate 22 are both provided with sealing grooves 13 on the adjacent end surfaces thereof, and a sealing ring 14 is installed between the sealing grooves 13 of the fixing ring 11 and the mounting plate 22. The fixing ring 11 and the mounting plate 22 use the sealing grooves 13 to press the sealing ring 14, and the deformed sealing ring 14 blocks the gap between the fixing ring 11 and the mounting plate 22, thereby maintaining the sealing performance of the connection between the oil seal 2 and the shock absorber body 1.
[0034] Reference Figure 4 A convex ring 211 is horizontally fixed to the bottom of the inner circumference of the bushing 21, and a plurality of blocks 212 are evenly fixed on the inner circumference of the bushing 21. During use, the convex ring 211 and the blocks 212 arranged on the inner circumference of the bushing 21 are used to limit the pressure on the sealing ring 24, so as to prevent the sealing ring 24 from being skewed by the damping oil in the later stage, causing the sealing ring 24 to be skew, resulting in a poor sealing effect of the sealing ring 24. Grooves and grooves are provided on the outer circumference of the sealing ring 24, and the convex ring 211 and the blocks 212 are pressed in the grooves and grooves of the sealing ring 24. During use, the sealing ring 24 is pressed by the convex ring 211 and the blocks 212 of the bushing 21, and the sealing ring 24 is limited and pressed, so as to prevent the sealing ring 24 from being skewed by the damping oil in the later stage.
[0035] Reference Figure 4 The lower portion of the inner circumference of the bushing 21 is horizontally provided with a lower sealing groove 213, and the lower sealing ring 25 is filled in the lower sealing groove 213. The lower portion of the inner circumference of the bushing 21 is provided with a lower sealing groove 213 at the upper end of the insert tube 12, and the lower sealing ring 25 filled in the lower sealing groove 213 is pressed against the upper end of the insert tube 12 to seal the gap between the bushing 21 and the insert tube 12, and maintain the sealing of the connection between the bushing 21 and the insert tube 12.
[0036] Reference Figure 4 and Figure 5, an upper sealing groove 214 is horizontally opened on the upper inner circumference of the bushing 21, and multiple upper sealing grooves 214 are arranged in the vertical direction. The multiple upper sealing grooves 214 vertically opened on the upper inner circumference of the bushing 21 are used to seal the upper column of the shock absorber body 1, and improve the sealing of the upper column of the shock absorber body 1. Multiple plugs are evenly and vertically fixed on the upper and lower sides of the upper sealing groove 214 of the bushing 21, and the upper sealing ring 26 is filled in the upper sealing groove 214 of the bushing 21. With the upper sealing ring 26 filled in the upper sealing groove 214, the inner circumferential surface of the upper sealing ring 26 is pressed against the outer wall of the upper column of the shock absorber body 1, thereby blocking the gap between the upper column of the shock absorber body 1 and the bushing 21. Multiple slots 261 are evenly and vertically opened on the upper and lower end surfaces of the upper sealing ring 26, and the slots 261 on the upper sealing ring 26 are plugged into the plugs on the upper sealing groove 214. During use, the slot 261 on the upper sealing ring 26 is plugged into the plug post on the upper sealing groove 214, limiting the upper sealing ring 26 in the upper sealing groove 214, thereby preventing the upper sealing ring 26 from being squeezed out of the upper sealing groove 214 when the upper column of the shock absorber body 1 is extended, thereby preventing the sealing of the upper column of the shock absorber body 1 from being affected.
[0037] The implementation principle of the wear-resistant oil seal of a bushing annular structure in the embodiment of the present application is as follows: during use, a rubber ring 122 is first sleeved on the insert sleeve 12 at the top of the lower cylinder of the shock absorber body 1, and a sleeve groove is opened on the inner circumferential surface of the rubber ring 122. The sleeve groove on the rubber ring 122 is elastically fixed to the support ring 121 of the insert sleeve 12, and at the same time, a sealing ring 14 is sleeved on the outside of the insert sleeve 12, and then the bushing 21 on the oil seal 2 is vertically sleeved on the insert sleeve 12, and at the same time, the mounting plate 22 at the bottom end of the bushing 21 is fixed together with the fixing ring 11 at the top of the lower cylinder of the shock absorber body 1 by bolts, and the inner circumferential surface of the sleeved bushing 21 is pressed against the rubber ring 122 and the outer circumferential surface of the rubber ring 122, and the gap between the bushing 21 and the insert sleeve 12 is sealed by the rubber ring 122 and the rubber ring 122 to avoid oil leakage in the later stage, thereby completing the sealing assembly of the bushing 21 and the insert sleeve 12.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A wear-resistant oil seal with a bushing annular structure, characterized in that: The invention comprises a shock absorber body (1) and an oil seal (2), wherein an insert tube (12) is vertically fixed through the top of the lower column of the shock absorber body (1), and a fixing ring (11) is horizontally fixed to the top of the lower column of the shock absorber body (1), a support ring (121) is horizontally fixed on the outer circumferential surface of the insert tube (12), and two support rings (121) are arranged in the vertical direction, and the outsides of the two support rings (121) are both sleeved with rubber sleeves (122), and a sealing ring (121) is sleeved on the insert tube (12). A sealing ring (24) is provided between the two support rings (121); the oil seal (2) comprises a bushing (21) which is sleeved on the insert sleeve (12); a mounting plate (22) is fixedly passed through the bottom end of the bushing (21) in a horizontal manner; the mounting plate (22) is fixed to the fixing ring (11) by means of fixing screws (23); and the outer circumferential surfaces of the rubber sleeve (122) and the sealing ring (24) are pressed against the inner circumferential surface of the bushing (21).
2. A wear-resistant oil seal with a bushing annular structure according to claim 1, characterized in that: Sealing grooves (13) are provided on adjacent end surfaces of the fixing ring (11) and the mounting plate (22), and a sealing ring (14) is installed between the sealing grooves (13) of the fixing ring (11) and the mounting plate (22).
3. A wear-resistant oil seal with a bushing annular structure according to claim 1, characterized in that: A convex ring (211) is horizontally fixed to the bottom of the inner circumferential surface of the bushing (21), and a plurality of clamping blocks (212) are evenly fixed to the inner circumferential surface of the bushing (21).
4. A wear-resistant oil seal with a bushing annular structure according to claim 3, characterized in that: A groove and a clamping groove are provided on the outer circumferential surface of the sealing ring (24), and the convex ring (211) and the clamping block (212) are pressed into the groove and the clamping groove of the sealing ring (24).
5. The wear-resistant oil seal with a bushing annular structure according to claim 1, characterized in that: A lower sealing groove (213) is horizontally opened at the lower portion of the inner circumference of the bushing (21), and a lower sealing ring (25) is filled in the lower sealing groove (213).
6. A wear-resistant oil seal with a bushing annular structure according to claim 1, characterized in that: An upper sealing groove (214) is horizontally opened on the upper portion of the inner circumference of the bushing (21), and a plurality of upper sealing grooves (214) are arranged in the vertical direction.
7. A wear-resistant oil seal with a bushing annular structure according to claim 6, characterized in that: A plurality of plug posts are evenly and vertically fixed on the upper and lower sides of the upper sealing groove (214) of the bushing (21), and an upper sealing ring (26) is filled in the upper sealing groove (214) of the bushing (21).
8. A wear-resistant oil seal with a bushing annular structure according to claim 7, characterized in that: A plurality of slots (261) are evenly and vertically provided on the upper and lower end surfaces of the upper sealing ring (26), and the slots (261) on the upper sealing ring (26) are plugged into the plug posts on the upper sealing groove (214).