Rubber oil seal

Abstract

The utility model relates to the technical field of rubber oil seals, in particular to a rubber oil seal which comprises an oil seal body, an oil storage groove formed in the bottom of the oil seal body, a hoop ring groove formed in the inner side face of the oil storage groove, a positioning hoop arranged in the hoop ring groove, an outer sealing lip arranged at the bottom of the outer wall of the oil storage groove, and an inner sealing lip arranged at the bottom of the inner wall of the oil storage groove. An inner sealing ring is arranged on the side wall of an inner ring of the oil seal body, a U-shaped groove is formed in the top of the inner sealing ring, and a plurality of elastic clamping pieces are arranged in the U-shaped groove. According to the rubber oil seal, the oil storage groove is formed, the outer sealing lip and the inner sealing lip are arranged in the oil storage groove in a matched mode, sealing oil body storage matching is achieved, the falling influence of the pasty sealing oil body is reduced, the multiple elastic clamping pieces are matched in the inner sealing ring, the structural stability of the inner sealing ring is improved, and the contact tightness of the inner ring of the inner sealing ring and the outside is achieved; the positioning hoop is matched with the hoop ring groove in an inserted mode, the structural stability of the inner ring of the oil seal body is improved, and the situation that continuous sealing fit is affected due to deformation caused by long-time clamping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber oil seals, and particularly relates to a rubber oil seal. Background Technique

[0002] An oil seal is the common name for a general seal. Simply put, it is the seal of lubricating oil. It is a mechanical component used to seal grease. It isolates the components that need to be lubricated in the transmission components from the output components, so as to prevent the leakage of lubricating oil;

[0003] The utility model with the publication number of CN215567923U discloses a new type of rubber oil seal, which includes a disc. Both sides of the inner cavity of the disc are fixedly connected with rubber oil seal bodies. A rotating shaft body is arranged inside the disc. One side of the rubber oil seal body is fixedly connected with a sealing lip. One side of the sealing lip is in contact with the rotating shaft body. Both the top and the bottom of one side of the sealing lip are fixedly connected with first springs. One end of the first spring is fixedly connected with the rubber oil seal body. A dust-proof disc body is sleeved on the surface of the rotating shaft body. Both sides of the top of the disc are fixedly connected with L-shaped plates. One side of the dust-proof disc body is located inside the L-shaped plates. A disassembly mechanism is arranged on the top of the L-shaped plate. The disassembly mechanism includes a U-shaped plate, a movable rod, a fixed rod, a clamping block, a bolt and a plug rod. The bottom of the U-shaped plate is fixedly connected with the surface of the L-shaped plate;

[0004] In the above technical solution, by placing the rotating shaft body inside the disc, the sealing lip is driven to contact the rotating shaft body by the elastic force of the first spring itself, which can prevent liquid leakage. By the contact between the dust-proof disc body and the rotating shaft body, dust can be prevented from entering the inside of the rubber oil seal body. Through the disassembly mechanism, the dust-proof disc body can be conveniently disassembled and replaced, solving the problems that the existing rubber oil seal cannot prevent dust from entering the inside of the rubber oil seal and is not convenient to disassemble and replace the dust-proof disc after long-term use; however, the rubber oil seal cannot increase the tightness of fitting with mechanical components, and the rubber oil seal is not convenient for disassembly and replacement of the fitting. When used for a long time, the rubber oil seal is prone to deformation, affecting the continuous sealing fit. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rubber oil seal to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rubber oil seal comprises an oil seal body, an oil storage tank is provided at the bottom of the oil seal body, a hoop ring groove is provided on the inner side surface of the oil storage tank, a positioning hoop is provided in the hoop ring groove, an outer sealing lip is provided at the bottom of the outer wall of the oil storage tank, an inner sealing lip is provided at the bottom of the inner wall of the oil storage tank, an inner sealing ring is provided on the inner ring side wall of the oil seal body, a U-shaped groove is provided on the top of the inner sealing ring, and a plurality of elastic cards are provided in the U-shaped groove.

[0008] Preferably, an annular groove is provided at the top of the oil seal body, a plurality of protrusions are provided in the annular groove, the protrusions are distributed in an annular shape with equal intervals, and the bottom of the protrusions is bonded and fixed to the bottom of the annular groove.

[0009] In the utility model, a plurality of protrusions are provided, which helps to increase the points of force, helps to facilitate the contact and cooperation of external disassembly tools, and facilitates the adjustment and cooperation of the installation position of the oil seal body.

[0010] Preferably, grooves are formed on both the inner wall and the outer wall of the annular groove, and the grooves are distributed in a circular shape with equal intervals.

[0011] In the utility model, the cooperation of the multiple grooves helps to provide a force point for external tweezers to clamp and realize the removal and replacement of the oil seal body.

[0012] Preferably, the outer wall of the inner sealing ring is bonded and fixed to the inner wall of the oil seal body, the width of the inner wall of the U-shaped groove is matched with the width of the outer wall of the elastic card, and the outer wall of the elastic card is bonded and fixed to the inner wall of the U-shaped groove.

[0013] In the utility model, the inner sealing ring is matched with an elastic card to increase the close fit between the inner wall of the inner sealing ring and the external mechanical parts, thereby increasing the stability of the fit. The elastic card increases the elasticity of the inner sealing ring to prevent the inner sealing ring from expanding and relaxing and affecting the sealing when used for a long time.

[0014] Preferably, the width of the inner wall of the hoop groove is matched with the width of the outer wall of the positioning hoop, and the positioning hoop is plug-fitted into the hoop groove.

[0015] In the utility model, a positioning hoop is provided to be plugged and matched with the hoop ring groove, so as to increase the structural stability of the inner ring of the oil seal body, increase the tightness of the inner ring and the external mechanical structure, and reduce the unstable sealing caused by looseness due to long-term use.

[0016] Preferably, the outer sealing lip is bonded and fixed to the oil seal body, and the inner sealing lip is bonded and fixed to the oil seal body.

[0017] In the utility model, the outer sealing lip is arranged to cooperate with the oil seal body, which helps the oil storage tank in the oil seal body to store the sealing oil and increases the sealing stability between the oil seal body and the external mechanical structure.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model realizes the storage and cooperation of the sealing oil body by setting an oil storage tank and cooperating with the outer sealing lip and the inner sealing lip inside, reduces the impact of the paste-like sealing oil body falling, cooperates with multiple elastic cards in the inner sealing ring, increases the structural stability of the inner sealing ring, realizes the tightness of the inner ring of the inner sealing ring in contact with the outside world, and arranges the plug-in cooperation of the positioning hoop and the hoop ring groove to increase the structural stability of the inner ring of the oil seal body, reduces the deformation impact caused by long-term clamping, and affects the continuous sealing cooperation.

[0020] 2. The utility model provides an annular groove and increases the contact area with the cooperation of multiple protrusions, which helps external adjustment tools to adjust the position of the oil seal body. The provision of multiple grooves helps external tweezers to plug and connect, providing a fulcrum point to facilitate the removal and replacement of the oil seal body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is an overall bottom view schematic diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the combined structure of the positioning hoop and the oil seal body of the utility model;

[0024] Figure 4 It is a schematic diagram of the combined structure of the oil seal body and the inner sealing ring of the utility model;

[0025] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0026] The meaning of each number in the figure is:

[0027] 1. Oil seal body; 10. Oil storage tank; 11. Hoop groove; 110. Positioning hoop; 12. Outer sealing lip; 13. Inner sealing lip; 14. Annular groove; 140. Protrusion; 141. Groove;

[0028] 2. Inner sealing ring; 20. U-shaped groove; 21. Elastic card. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See alsoFigures 1 - 5 , this embodiment provides a technical solution:

[0031] A rubber oil seal comprises an oil seal body 1. The top of the oil seal body 1 is provided with an annular groove 14. The annular groove 14 is provided with a plurality of protrusions 140. The protrusions 140 are distributed in an annular shape with equal intervals. The bottom of the protrusions 140 is bonded and fixed to the bottom of the annular groove 14.

[0032] In the present invention, a plurality of protrusions 140 are provided, which helps to increase the points of force, helps external disassembly tools to make contact and cooperate, and facilitates the adjustment and cooperation of the installation position of the oil seal body 1.

[0033] Furthermore, grooves 141 are formed on both the inner wall and the outer wall of the annular groove 14 , and the grooves 141 are distributed in an annular shape with equal intervals.

[0034] In the utility model, the cooperation of the multiple grooves 141 helps to provide a force point for external tweezers to clamp and realize the removal and replacement of the oil seal body 1.

[0035] Specifically, an oil storage tank 10 is opened at the bottom of the oil seal body 1, a hoop groove 11 is opened on the inner side of the oil storage tank 10, a positioning hoop 110 is arranged in the hoop groove 11, the width of the inner wall of the hoop groove 11 is adapted to the width of the outer wall of the positioning hoop 110, and the positioning hoop 110 is plugged into and matched with the hoop groove 11.

[0036] In the utility model, a positioning hoop 110 is provided to be plugged and matched with the hoop groove 11, so as to increase the structural stability of the inner ring of the oil seal body 1, increase the tightness of the inner ring and the external mechanical structure, and reduce the sealing instability caused by looseness due to long-term use.

[0037] It should be noted that an outer sealing lip 12 is provided at the bottom of the outer wall of the oil storage tank 10 , and an inner sealing lip 13 is provided at the bottom of the inner wall of the oil storage tank 10 . The outer sealing lip 12 is bonded and fixed to the oil seal body 1 , and the inner sealing lip 13 is bonded and fixed to the oil seal body 1 .

[0038] In the present invention, the outer sealing lip 12 is provided to cooperate with the oil seal body 1, which helps the oil storage tank 10 in the oil seal body 1 to store the sealing oil and increases the stability of the seal between the oil seal body 1 and the external mechanical structure.

[0039] Furthermore, an inner sealing ring 2 is provided on the inner ring side wall of the oil seal body 1 , a U-shaped groove 20 is provided on the top of the inner sealing ring 2 , and a plurality of elastic cards 21 are provided in the U-shaped groove 20 .

[0040] Specifically, the outer wall of the inner sealing ring 2 is bonded and fixed to the inner wall of the oil seal body 1 , the width of the inner wall of the U-shaped groove 20 matches the width of the outer wall of the elastic card 21 , and the outer wall of the elastic card 21 is bonded and fixed to the inner wall of the U-shaped groove 20 .

[0041] In the utility model, the inner sealing ring 2 is matched with an elastic card 21 to increase the close fit between the inner wall of the inner sealing ring 2 and the external mechanical parts, and increase the stability of the fit. The elastic card 21 increases the elasticity of the inner sealing ring 2 to prevent the inner sealing ring 2 from expanding and relaxing during long-term use to affect the sealing.

[0042] When the rubber oil seal of this embodiment is used, the user first assembles the outer sealing lip 12 and the inner sealing lip 13 with the oil seal body 1, then assembles the inner sealing ring 2 with the oil seal body 1, and then plugs and matches the multiple elastic cards 21 with the U-shaped groove 20 to increase the structural stability of the inner sealing ring 2, and finally sets the positioning hoop 110 on the hoop groove 11 to increase the overall structural stability;

[0043] When it is necessary to seal the mechanical components with grease, the oil storage tank 10 is filled with a paste of oil, and the oil storage tank 10 is plugged into the mechanical components to protect the paste of oil with the cooperation of the outer sealing lip 12 and the inner sealing lip 13. The cooperation of multiple protrusions 140 helps external tools to adjust the installation position of the oil seal body 1. With the cooperation of multiple elastic cards 21, the tightness between the inner sealing ring 2 and the side wall of the mechanical component is increased. With the cooperation of the positioning hoop 110, the stability of the overall installation is increased and the influence of deformation on the sealing is reduced. When the oil seal body 1 needs to be disassembled, the tip of the external tweezers is plugged into the corresponding groove 141 to provide a fulcrum to facilitate the quick disassembly and matching of the oil seal body 1.

Claims

1. A rubber oil seal, comprising an oil seal body (1), characterized in that: An oil storage tank (10) is provided at the bottom of the oil seal body (1), a hoop ring groove (11) is provided on the inner side surface of the oil storage tank (10), a positioning hoop (110) is provided in the hoop ring groove (11), an outer sealing lip (12) is provided at the bottom of the outer wall of the oil storage tank (10), an inner sealing lip (13) is provided at the bottom of the inner wall of the oil storage tank (10), an inner sealing ring (2) is provided on the inner ring side wall of the oil seal body (1), a U-shaped groove (20) is provided at the top of the inner sealing ring (2), and a plurality of elastic clips (21) are provided in the U-shaped groove (20).

2. The rubber oil seal according to claim 1, characterized in that: An annular groove (14) is provided at the top of the oil seal body (1), a plurality of protrusions (140) are provided in the annular groove (14), the protrusions (140) are distributed in an annular shape at equal intervals, and the bottoms of the protrusions (140) are bonded and fixed to the bottom of the annular groove (14).

3. The rubber oil seal according to claim 2, characterized in that: Grooves (141) are formed on both the inner wall and the outer wall of the annular groove (14), and the grooves (141) are distributed in an annular shape at equal intervals.

4. The rubber oil seal according to claim 1, characterized in that: The outer wall of the inner sealing ring (2) is bonded and fixed to the inner wall of the oil seal body (1); the width of the inner wall of the U-shaped groove (20) matches the width of the outer wall of the elastic card (21); and the outer wall of the elastic card (21) is bonded and fixed to the inner wall of the U-shaped groove (20).

5. The rubber oil seal according to claim 1, characterized in that: The width of the inner wall of the hoop groove (11) matches the width of the outer wall of the positioning hoop (110), and the positioning hoop (110) is plug-fitted into the hoop groove (11).

6. The rubber oil seal according to claim 1, characterized in that: The outer sealing lip (12) is bonded and fixed to the oil seal body (1), and the inner sealing lip (13) is bonded and fixed to the oil seal body (1).

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