CN219119796U

CN219119796U - Axle hub oil seal

Info

Publication number: CN219119796U
Application number: CN202223406147.XU
Authority: CN
Inventors: 陈家欣
Original assignee: Shanghai Mfc Sealing Technology Co ltd
Current assignee: Shanghai Mfc Sealing Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-02
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses an axle hub oil seal, and belongs to the technical field of oil seals. The novel automobile wheel axle mainly comprises a first framework, a second framework and a third framework, wherein a first bending section is arranged at one end of the first framework, a second bending section is arranged at one end of the second framework, a third bending section is arranged at one end of the third framework, the second framework is wrapped outside the first framework and the third framework, the third framework is sleeved on the second framework in a matched mode, the third framework is rotatably sleeved on the first framework, the first bending section is clamped between the second bending section and the third bending section, a main lip is arranged on the outer side wall of the first framework in a sealing mode, a third protection lip is arranged on the second bending section and close to the first framework, and the third protection lip is used for sealing and propping against the outer wall of an axle rotating shaft and inclines towards the first bending section. The axle hub oil seal can prevent lubricating medium filled in the axle hub oil seal from leaking.

Description

Axle hub oil seal

Technical Field

The utility model relates to the technical field of oil seals, in particular to an axle hub oil seal.

Background

The axle hub oil seal commonly uses a multi-framework box type oil seal, and has excellent sealing performance and longer service life. The lubricating medium can be filled in the existing axle hub oil seal, but along with the high-speed operation of the oil seal, the temperature of the lubricating medium in the oil seal is increased, and the lubricating medium is easy to leak.

There is a need to provide a new axle hub oil seal that addresses the above-described issues.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: provided is an axle hub oil seal capable of preventing leakage of a lubricating medium filled in the axle hub oil seal.

The technical scheme adopted for solving the technical problems is as follows: the first framework is used for being sleeved on the outer wall of the axle rotating shaft, and the second framework is used for being in plug-in fit with the axle hub; the one end of first skeleton is equipped with the first section of buckling towards the outside of first skeleton, the one end of second skeleton is equipped with the second section of buckling towards the inboard of second skeleton, the one end of third skeleton is equipped with the third section of buckling towards the inboard of third skeleton, the second skeleton parcel is in the outside of first skeleton and third skeleton, the third skeleton cup joints the cooperation on the second skeleton, the rotatable cover of third skeleton is located on the first skeleton, first section of buckling presss from both sides locates between second section of buckling and the third section of buckling, make the inside cavity that is used for filling the lubricating medium that is arranged in outside first skeleton and is surrounded by second section of buckling and third section of buckling, the inboard of third section of buckling is equipped with the main lip that seals to support on first skeleton lateral wall, be close to first skeleton on the second section of buckling and be provided with the third protection lip, the third protection lip is used for sealing to support with axle pivot outer wall, the outer fringe of main lip is inclined towards first section of buckling.

Further, the main lips have two.

Further, be equipped with first protection lip on the first skeleton, first protection lip sets up on the terminal surface that first bending section is close to the second bending section to first protection lip seals with the second bending section and supports and hold.

Further, a first sealing layer is arranged on the first framework, and the first sealing layer is arranged on the inner side wall of the first framework.

Further, be provided with first extension body on the first skeleton, first extension body is outstanding to keep away from the terminal surface of first skeleton in first bending section, and the inboard of second bending section is equipped with along the second skeleton axial and is close to the first turn-ups that first bending section extends.

Further, a second sealing layer is further arranged on the outer side wall of the second framework.

Further, a fourth protection lip is arranged on the end face, far away from the third framework, of the third bending section, and the fourth protection lip is abutted against the first bending section in a sealing mode.

Further, the cross section of the fourth protective lip is in a rectangular structure.

The beneficial effects of the utility model are as follows: according to the axle hub oil seal provided by the embodiment of the utility model, the second bending section is provided with the third protection lip close to the first framework, the third protection lip is used for being in sealing and supporting with the outer wall of the axle rotating shaft to form a sealing surface to isolate a lubricating medium in the cavity from the external environment, and the outer edge of the main lip is inclined towards the first bending section, so that when the lubricating medium filled in the axle hub oil seal has an outward permeation trend due to high temperature and other reasons, the high pressure in the axle hub oil seal can force the main lip to tend to deviate from the first bending section to deform, and the main lip can be enabled to be more tightly abutted against the outer side wall of the outer framework to prevent the lubricating medium from leaking outwards.

Drawings

The utility model is further described below with reference to the drawings and examples.

In the figure: FIG. 1 is a schematic cross-sectional view of an axle hub oil seal of the present utility model;

FIG. 2 is a schematic view of the axle hub oil seal of the present utility model in use;

100. an axle spindle; 200. an axle hub.

1. A first skeleton; 101. a first bending section; 11. a first protective lip; 12. a first sealing layer; 13. a first extension body; 2. a second skeleton; 201. a second bending section; 202. a first flanging; 21. a second protective lip; 22. a second sealing layer; 23. a third protective lip; 3. a third skeleton; 301. a third bending section; 302. a second flanging; 31. a main lip; 32. a fourth protective lip; 33. and a third sealing layer.

Detailed Description

The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.

As shown in fig. 1, the utility model provides an axle hub oil seal, which adopts a multi-skeleton structure, and is surrounded by a plurality of skeletons to form a cavity, and the cavity is filled with lubricating medium. Referring also to fig. 2, the axle hub oil seal is configured to be installed between the axle spindle 100 and the axle hub 200, and to close a gap between the axle spindle 100 and the axle hub 200. The axle hub oil seal comprises a first framework 1, a second framework 2 and a third framework 3, wherein the first framework 1, the second framework 2 and the third framework 3 are of cylindrical structures, the first framework 1 is sleeved on the outer wall of an axle rotating shaft 100, the second framework 2 is in plug-in fit on an axle hub 200, one end of the first framework 1 is provided with a first bending section 101 bending towards the outer side of the first framework 1, in the embodiment, the first bending section 101 is perpendicular to the side wall of the first framework 1, one end of the second framework 2 is provided with a second bending section 201 bending towards the inner side of the second framework 2, one end of the third framework 3 is provided with a third bending section 301 bending towards the inner side of the third framework 3, when the axle hub oil seal is assembled in place, the second framework 2 is wrapped on the outer parts of the first framework 1 and the third framework 3, and the third framework 3 is in sleeve-in fit on the second framework 2, the third framework 3 is rotatably sleeved on the first framework 1, the first bending section 101 is clamped between the second bending section 201 and the third bending section 301, so that the second framework 2 is arranged outside the first framework 1 and surrounded by the second bending section 201 and the third bending section 301 to form a cavity for filling lubricating medium, the inner side of the third bending section 301 is provided with a main lip 31 which is sealed and abutted against the outer side wall of the first framework 1 to form a sealing surface, the second bending section 201 is provided with a third protective lip 23 close to the first framework 1, the third protective lip 23 is used for being sealed and abutted against the outer wall of the axle rotating shaft 100 to form a sealing surface to isolate the lubricating medium in the cavity from the external environment, and the outer edge of the main lip 31 is inclined towards the first bending section 201, so that when the lubricating medium filled inside the axle hub oil seal has a trend of outwards penetrating due to high temperature and the like, the high pressure in the axle hub oil seal forces the main lip 31 to deform away from the first bending section 101, so that the main lip 31 is more tightly abutted against the outer side wall of the outer skeleton 1, and lubricating medium filled in the axle hub oil seal is prevented from leaking outwards.

In some of these embodiments, the primary lip 31 has two.

In some embodiments, the first frame 1 is provided with a first protective lip 11 and a first sealing layer 12, the first protective lip 11 is disposed on an end surface of the first bending section 101 near the second bending section 201, and the first protective lip 11 is in sealing contact with the second bending section 201, the first sealing layer 12 is disposed on an inner side wall of the first frame 1, and when the first frame 1 is mounted on the axle rotating shaft 100, the first sealing layer 12 is in direct contact with the axle rotating shaft 100 so as to close a gap between the inner side wall of the first frame 1 and an outer side wall of the axle rotating shaft 100, and in addition, abrasion caused by direct contact between the first frame 1 and the axle rotating shaft 100 is avoided. In addition, the first protective lip 11 is provided in plural at intervals.

In some embodiments, the first framework 1 is further provided with a first extension body 13, the first extension body 13 protrudes out of an end surface of the first bending section 101 away from the first framework 1, and the inner side of the second bending section 201 is provided with a first flanging 202 extending along the axial direction of the second framework 2 and close to the first bending section 101, so that the first extension body 13 is close to the first flanging 202, thereby playing a role of blocking the lubrication medium in the cavity.

In some of these embodiments, a second sealing layer 22 is further provided on the outer sidewall of the second frame 2, and when the second frame 2 is mounted on the axle hub 200, the second sealing layer 22 directly contacts the axle hub 200, avoiding excessive wear of the second frame 2 in direct contact with the axle hub 200. The end surface of the second bending section 201 far away from the second framework 2 is provided with a second protective lip 21, so that when the axle hub oil seal is used, the second protective lip 21 props against the end surface of the axle rotating shaft 100 near the axle hub oil seal, and serves as a first barrier for isolating external pollutants from invasion.

In some embodiments, a fourth protection lip 32 is further disposed on the end surface of the third bending section 301 away from the third framework 3, and the fourth protection lip 32 is sealed and abutted against the first bending section 101. In this embodiment, the cross section of the fourth protection lip 32 is in a rectangular structure, so that the fourth protection lip 32 has a larger contact surface when contacting the first bending section 101, thereby achieving a more reliable sealing effect.

In some of these embodiments, the end of the third frame 3 remote from the third bending section 301 is provided with a second flange 302 bent towards the outside of the third frame 3, the second flange 302 abutting against the end of the second frame 2 when the second frame 2 and the third frame 3 are assembled in place. Thereby acting as an axial positioning for the assembly of the second armature 2 and the third armature 3.

In some embodiments, a third sealing layer 33 is provided on the outer side wall of the third framework 3, and when the third framework 3 and the second framework 2 are assembled in place, the third sealing layer 33 on the third framework 3 is in interference fit with the inner side wall of the second framework 2, so that the third framework 3 and the second framework 2 are fixedly connected.

In some of these embodiments, the first skeleton 1, the second skeleton 2, and the third skeleton 3 are all hard materials. In the present embodiment, the first skeleton 1, the second skeleton 2, and the third skeleton 3 are made of an iron material.

In some of these embodiments, the first protective lip 11, the first sealing layer 12, and the first extension 13 are integrally formed; the first protection lip 11, the first seal layer 12, and the first extension body 13 are made of a material having elasticity and sealability, and in this embodiment, the first protection lip 11, the first seal layer 12, and the first extension body 13 are made of rubber.

In some of these embodiments, the second protective lip 21, the second sealing layer 22, and the third protective lip 23 are integrally formed; the second protective lip 21, the second seal layer 22, and the third protective lip 23 are made of a material having elasticity and sealability, and in the present embodiment, the second protective lip 21, the second seal layer 22, and the third protective lip 23 are made of rubber.

In some of these embodiments, the primary lip 31 and the fourth protective lip 32 are integrally formed; the main lip 31 and the fourth protection lip 32 are made of a material having elasticity and sealability, and in the present embodiment, the main lip 31 and the fourth protection lip 32 are made of rubber.

In some embodiments, the lubricating medium is butter, which plays a role in lubricating the mutually moving parts, reduces friction force among the mutually moving parts, and effectively prolongs the service life of the axle hub oil seal.

When the axle hub oil seal provided by the embodiment of the utility model is assembled, the first framework 1 is penetrated into the second framework 2, so that the first bending section 101 on the first framework 1 is abutted against the fourth protective lip 32 on the second framework 2, and finally the third framework 3 is arranged in the second framework 2, so that the second flanging 302 on the third framework 3 is abutted against the second framework 2.

While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. The utility model provides an axle wheel hub oil blanket, includes first skeleton, second skeleton and third skeleton, and first skeleton, second skeleton and third skeleton all are cylindric structure, and first skeleton is used for the cover to locate on the axle pivot outer wall, and the second skeleton is used for pegging graft and cooperates on axle wheel hub, its characterized in that: the one end of first skeleton is equipped with the first section of buckling towards the outside of first skeleton, the one end of second skeleton is equipped with the second section of buckling towards the inboard of second skeleton, the one end of third skeleton is equipped with the third section of buckling towards the inboard of third skeleton, the second skeleton parcel is in the outside of first skeleton and third skeleton, the third skeleton cup joints the cooperation on the second skeleton, the rotatable cover of third skeleton is located on the first skeleton, first section of buckling presss from both sides locates between second section of buckling and the third section of buckling, make the inside cavity that is used for filling the lubricating medium that is arranged in outside first skeleton and is surrounded by second section of buckling and third section of buckling, the inboard of third section of buckling is equipped with the main lip that seals to support on first skeleton lateral wall, be close to first skeleton on the second section of buckling and be provided with the third protection lip, the third protection lip is used for sealing to support with axle pivot outer wall, the outer fringe of main lip is inclined towards first section of buckling.

2. The axle hub oil seal of claim 1, wherein: the main lips have two.

3. The axle hub oil seal of claim 1, wherein: the first framework is provided with a first protection lip, the first protection lip is arranged on the end face of the first bending section, which is close to the second bending section, and the first protection lip is in sealing abutting connection with the second bending section.

4. The axle hub oil seal of claim 1, wherein: the first framework is provided with a first sealing layer, and the first sealing layer is arranged on the inner side wall of the first framework.

5. The axle hub oil seal of claim 1, wherein: the first framework is provided with a first extension body, the first extension body protrudes out of one end face of the first bending section, which is far away from the first framework, and the inner side of the second bending section is provided with a first flanging which extends along the axial direction of the second framework and is close to the first bending section.

6. The axle hub oil seal of claim 1, wherein: and a second sealing layer is further arranged on the outer side wall of the second framework.

7. The axle hub oil seal of claim 1, wherein: the end face, far away from the third framework, of the third bending section is provided with a fourth protection lip, and the fourth protection lip is abutted against the first bending section in a sealing way.

8. The axle hub oil seal of claim 7, wherein: the cross section of the fourth protective lip is of a rectangular structure.