CN216618540U

CN216618540U - Combined oil seal for outer rotor type motor shaft

Info

Publication number: CN216618540U
Application number: CN202122981710.5U
Authority: CN
Inventors: 成建兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-05-27
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a combined oil seal for an outer rotor type motor shaft, which belongs to the technical field of oil seal accessories and comprises a felt, an oil seal ring and a dust cover, wherein the oil seal ring is positioned between the felt and the dust cover, the axial sections of the oil seal ring and the dust cover are both arranged in an L shape, the oil seal ring and the dust cover are arranged in a shape like a Chinese character 'ji', a lip opening of the oil seal ring extends towards the direction far away from the dust cover to form an oil storage ring, an annular oil storage groove is formed between the oil storage ring and the annular periphery of the oil seal ring, the inner diameter of the felt is the same as the inner diameter of the oil storage ring, the outer diameter of the felt is the same as the inner diameter of the annular periphery of the oil seal ring, and the effects of good protection effect, good adaptability, convenient assembly and long service life are achieved.

Description

Combined oil seal for outer rotor type motor shaft

Technical Field

The utility model relates to the field of oil seal accessories, in particular to a combined oil seal for an outer rotor type motor shaft.

Background

The oil seal is a mechanical element for sealing oil, and separates a part needing lubrication in a transmission part from a force-applying part, so that the lubricating oil is prevented from leaking.

The outer end cover of electric motor car motor is one of the essential accessories on the electric motor car, is equipped with the step that supplies the oil blanket installation on the end cover, and the oil blanket plays the guard action for the end cover. 1. However, due to market needs, when the end cover is designed and modeled, the uniform size standard of the steps of the end cover cannot be realized, and further inconvenience is brought to the assembly of the oil seal; 2. due to the limitation of the axial installation space of part of motors for electric vehicles, if a flywheel must be installed on a motor for a new national standard electric vehicle, an anti-drop chuck of the flywheel needs to be added according to summary requirements, so that the axial installation space is completely occupied or only a very small installation space is left, and a dustproof cover cannot be additionally installed on an end cover step; in addition, part of electric vehicle motors adopt a mode of chain on a threaded flywheel, and the mode ensures that the dustproof cover cannot be additionally arranged on the step of the end cover, thereby influencing the service life of the oil seal; 3. the traditional oil seal (rubber sealing element) is usually fixed by sealing and press fitting, a lip is contacted with a shaft extension, lubricating grease is added into the lip, and grease is added on the outer side of the oil seal, so that the service life of the oil seal is prolonged. However, in outdoor scenes, under practical factors such as limited installation space and limited product design, the harsh environment that needs to be exposed to wind, rain, sewage flooding and silt deposition friction for a long time when the outdoor environment is used cannot be well met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems in the related art to a certain extent at least aiming at the defects in the prior art, and provides a combined oil seal for an outer rotor type motor shaft, so as to achieve the purposes of good protection effect, good adaptability, convenience in assembly and long service life.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides an outer rotor-type combination oil blanket for motor shaft, includes felt, oil blanket circle and shield, the oil blanket circle is located between felt and the shield, the axial cross-section of oil blanket circle and shield all is L shape setting, and both are out the font and arrange, the lip of oil blanket circle is extended to keeping away from the shield direction and is formed with the oil storage ring, form annular oil storage tank between the ring periphery of oil storage ring and oil blanket circle, the internal diameter of felt is the same with the internal diameter of oil storage ring, the external diameter of felt is the same with the ring periphery internal diameter of oil blanket circle.

Through the arrangement, a shaft-used mode is adopted, the fixing mode of the end cover steps is eliminated, the problem that the end cover cannot be installed due to design requirements is avoided, particularly the application requirement of a motor with a flywheel is met, and the effects of good adaptability and convenience in assembly are achieved; after the mode that the axle stretched fixedly is adopted, the grease that overflows when the innermost felt can adsorb the storage installation, increase lubricated effect, recycle the felt, the interference size cooperation of oil seal circle and axle excircle increases the leakproofness, increase protective capacities for felt and oil seal circle, play and block silt particle, oil-water separation's effect, set up the shield at last, can be to felt and oil seal circle parcel in the inboard, further improve sealed effect, make the motor, the life of electric motor car increases, satisfy product demand and quality needs.

As specific embodiments of the present invention, the following may be preferred: the lip of shield extends to being close to oil seal ring direction and is formed with the lip cover, the inboard of lip cover is equipped with many annular V type grooves, the lip of shield extends to keeping away from oil seal ring direction and is formed with the hoop cover, the outside of hoop cover is equipped with the annular U type groove that can supply the hoop cover to establish.

Through the setting, the lip cover can be more tightly installed by the dust cover, the annular V-shaped groove can be more easily and more tightly sleeved by the lip cover when the outer circle of the shaft is sleeved, the hoop cover can play a part of dustproof and waterproof effects, and the hoop cover can be matched in the annular U-shaped groove of the hoop cover, so that the dust cover can be firmly installed.

As specific embodiments of the present invention, the following may be preferred: the lateral surface portion of oil seal ring is equipped with a plurality of recessed oil storage tanks towards the annular array of one side of felt, the annular array of the ring peripheral portion of oil seal ring has a plurality of side recessed oil storage tanks that link to each other with recessed oil storage tank.

Through the arrangement, the concave oil storage tank and the side concave oil storage tank are used as the expanded oil storage tank to achieve the effect of further oil storage, and the friction force between the felt and the oil seal ring can be increased by the step-shaped structure formed by the concave oil storage tank and the side concave oil storage tank, so that the felt is not easy to displace.

As specific embodiments of the present invention, the following may be preferred: and iron frameworks are arranged in the oil seal ring and the dustproof cover.

Through the arrangement, the iron framework can effectively improve the sealing performance and the service life of the oil seal ring and the dust cover.

As specific embodiments of the present invention, the following may be preferred: and a plurality of anti-skidding grooves are formed in the outer side of the circumferential part of the dustproof cover.

Through the arrangement, the anti-slip groove can improve friction force, so that people can hold the outer side of the circumferential part of the dustproof cover conveniently, and the dustproof cover is sleeved into the outer circle of the shaft.

As specific embodiments of the present invention, the following may be preferred: the felt is formed by blending wool and terylene.

Through the arrangement, the felt manufactured in the mode is not easy to loosen, and is strong in adsorption capacity and corrosion resistant.

The technical effects of the utility model are mainly reflected in the following aspects: the shaft is adopted, the fixing mode of the end cover steps is eliminated, the problem that the end cover cannot be installed due to design requirements is avoided, particularly the application requirement of a motor with a flywheel is met, and the effects of good adaptability and convenience in assembly are achieved; after the mode that the axle stretched fixedly is adopted, the grease that overflows when the innermost felt can adsorb the storage installation, increase lubricated effect, recycle the felt, the interference size cooperation of oil seal circle and axle excircle increases the leakproofness, increase protective capacities for felt and oil seal circle, play and block silt particle, oil-water separation's effect, set up the shield at last, can be to felt and oil seal circle parcel in the inboard, further improve sealed effect, make the motor, the life of electric motor car increases, satisfy product demand and quality needs.

Drawings

FIG. 1 is a schematic cross-sectional view of the explosive state of the present invention;

FIG. 2 is a schematic perspective view of an oil seal ring according to the present invention;

FIG. 3 is a motor shaft adapted for use with the present invention;

fig. 4 is a motor end cap adapted to the present invention.

Reference numerals: 1. felt; 2. an oil seal ring; 3. a dust cover; 4. an oil storage ring; 5. an annular oil storage tank; 6. A lip cover; 7. an annular V-shaped groove; 8. a hoop sleeve; 9. an annular U-shaped groove; 10. a concave oil storage tank; 11. An undercut oil reservoir; 12. and (4) an anti-slip groove.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical aspects of the present invention can be more easily understood and appreciated, and are not to be construed as limiting the present invention.

Examples

Referring to fig. 1, the combined oil seal for the outer rotor type motor shaft of the utility model comprises a felt 1, an oil seal ring 2 and a dust cover 3, wherein the oil seal ring 2 is positioned between the felt 1 and the dust cover 3, the axial sections of the oil seal ring 2 and the dust cover 3 are arranged in an L shape, the felt 1 and the dust cover 3 are arranged in a shape like the Chinese character 'tu', the lip opening of the oil seal ring 2 extends towards the direction far away from the dust cover 3 to form an oil storage ring 4, an annular oil storage tank 5 is formed between the oil storage ring 4 and the annular periphery of the oil seal ring 2, the inner diameter of the felt 1 is the same as that of the oil storage ring 4, and the outer diameter of the felt 1 is the same as that of the annular periphery of the oil seal ring 2. The motor shaft matched with the combined oil seal is shown in a reference figure 3, and the motor end cover matched with the combined oil seal is shown in a reference figure 4.

The shaft is adopted, the fixing mode of the end cover steps is eliminated, the problem that the end cover cannot be installed due to design requirements is avoided, particularly the application requirement of a motor with a flywheel is met, and the effects of good adaptability and convenience in assembly are achieved; after the mode that the axle stretched fixedly is adopted, the grease that overflows when the innermost felt 1 can adsorb the storage installation, increase lubricated effect, recycle felt 1, the interference size fit of oil seal circle 2 and axle excircle increases the leakproofness, for felt 1 and oil seal circle 2 increase protective capacities, play and block the silt particle, oil-water separation's effect, set up shield 3 at last, can be to felt 1 and oil seal circle 2 parcel in the inboard, further improve sealed effect, make the motor, the life of electric motor car increases, satisfy product demand and quality needs.

The lip of shield 3 is formed with lip cover 6 to being close to the extension of 2 directions of oil blanket circle, and the inboard of lip cover 6 is equipped with many annular V type grooves 7, and the lip of shield extends to keeping away from 2 directions of oil blanket circle and is formed with the hoop cover 8, and the outside of hoop cover 8 is equipped with the annular U type groove 9 that can supply the hoop cover to establish. Lip cover 6 can let the more fastening of shield 3 installation, and annular V type groove 7 then can let lip cover 6 when emboliaing the axle excircle easier, the more fastening of cover, and hoop 8 then can play partly dustproof and waterproof's effect, can also cooperate the hoop cover in the annular U type groove 9 of hoop 8 for shield 3 can firmly be installed.

Referring to fig. 2, the lateral surface of the oil seal ring 2 is provided with a plurality of concave oil reservoirs 10 in an annular array on the side facing the felt 1, and the annular array on the inner side of the circumferential part of the oil seal ring 2 is provided with a plurality of concave oil reservoirs 11 connected with the concave oil reservoirs 10. The concave oil storage tank 10 and the side concave oil storage tank 11 are used as expanded oil storage tanks to achieve the effect of further oil storage, and the step-shaped concave oil storage tank 10 and the side concave oil storage tank 11 can increase the friction force between the felt 1 and the oil seal ring 2, so that the felt 1 is not easy to displace.

Iron frameworks are arranged in the oil seal ring 2 and the dustproof cover 3. The iron framework can effectively improve the sealing performance and the service life of the oil seal ring 2 and the dust cover 3.

The outer side of the circumferential part of the dust cover 3 is provided with a plurality of anti-slip grooves 12. The anti-slip groove 12 can improve friction force, so that people can conveniently hold the outer side of the circumferential part of the dust cover 3 and sleeve the dust cover 3 into the outer circle of the shaft.

The felt 1 is formed by blending wool and terylene. The felt 1 manufactured in this way is not only not easy to loosen, but also has strong adsorption capacity and corrosion resistance.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides an outer rotor-type combination oil blanket for motor shaft, characterized by includes felt, oil blanket circle and shield, the oil blanket circle is located between felt and the shield, the axial cross-section of oil blanket circle and shield all is L shape setting, and both are out the font and arrange, the lip of oil blanket circle is extended to keeping away from the shield direction and is formed with the oil storage ring, form annular oil storage tank between the ring periphery of oil storage ring and oil blanket circle, the internal diameter of felt is the same with the internal diameter of oil storage ring, the external diameter of felt is the same with the ring periphery internal diameter of oil blanket circle.

2. The combination oil seal for an outer rotor type motor shaft as claimed in claim 1, wherein: the lip of shield extends to being close to oil seal ring direction and is formed with the lip cover, the inboard of lip cover is equipped with many annular V type grooves, the lip of shield extends to keeping away from oil seal ring direction and is formed with the hoop cover, the outside of hoop cover is equipped with the annular U type groove that can supply the hoop cover to establish.

3. The combination oil seal for an outer rotor type motor shaft as claimed in claim 1, wherein: the lateral surface portion of oil seal ring is equipped with a plurality of recessed oil storage tanks towards the annular array of one side of felt, the annular array of the ring peripheral portion of oil seal ring has a plurality of side recessed oil storage tanks that link to each other with recessed oil storage tank.

4. The combination oil seal for an outer rotor type motor shaft as claimed in claim 1, wherein: and iron frameworks are arranged in the oil seal ring and the dustproof cover.

5. The combination oil seal for an outer rotor type motor shaft as claimed in claim 1 or 2, wherein: and a plurality of anti-skidding grooves are formed in the outer side of the circumferential part of the dustproof cover.

6. The combination oil seal for an outer rotor type motor shaft as claimed in claim 1, wherein: the felt is formed by blending wool and terylene.