CN217108200U

CN217108200U - Mechanical seal structure for electric vehicle

Info

Publication number: CN217108200U
Application number: CN202121309819.8U
Authority: CN
Inventors: 周伟
Original assignee: Jiangsu Xinwei Power Technology Co ltd
Current assignee: Jiangsu Xinwei Power Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-08-02
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a mechanical seal structure that electric motor car used, including axle, lip and gasket, epaxial bearing that is equipped with, the bearing includes bearing inner ring and bearing outer loop, the assembly of bearing inner ring is epaxial, the epaxial end cover that has cup jointed, be equipped with the oil blanket body on the end cover, be equipped with the gasket on the oil blanket body. This mechanical seal structure that electric motor car was used, realize dual waterproof purpose through setting up lip and gasket and bearing inner ring, through setting up the lip at the epaxial, make lip and axle be interference fit, at epaxial setting bearing, make the assembly of bearing inner ring epaxial, cup joint the end cover epaxial, set up the oil blanket body on the end cover, be equipped with the gasket on the oil blanket body, the lip is as first waterproof construction, gasket and bearing inner ring are the waterproof construction of second way, through setting up dual waterproof construction reinforcing mechanical seal structure's waterproof performance.

Description

Mechanical seal structure for electric vehicle

Technical Field

The utility model relates to a mechanical plane sealing technical field specifically is a mechanical seal structure for electric motor car.

Background

The traditional electric vehicle motor selects an oil seal as a sealing element between an end cover and a motor shaft, only butadiene-acrylonitrile rubber can be selected as an oil seal material due to the characteristics of the motor, the electric bicycle is used in an outdoor environment, the butadiene-acrylonitrile rubber oil seal is easy to age and lose efficacy under the irradiation of ultraviolet rays in sunlight, the lip of the oil seal is rapidly worn and sealed and loses efficacy after lubricating grease in the oil seal is dried up, so that the motor is not waterproof and fails, and the sealing effect is not reliable.

The existing mechanical sealing structure has the following problems:

1. most of the existing mechanical sealing structures adopt a single waterproof structure, the waterproof effect is not good, and the motor of the electric vehicle is easy to damage;

2. the structure that sets up a quiet ring in addition and set up the gasket class in current mechanical seal structure damages easily, leads to seal structure inefficacy after the gasket damages easily, needs to change often and leads to use cost to increase.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a mechanical sealing structure for an electric vehicle, which solves the problems that the existing mechanical sealing structure in the prior art mostly adopts a single waterproof structure, the waterproof effect is not good, and the motor of the electric vehicle is easy to damage; the structure that sets up the gasket class among the current mechanical seal structure damages easily, leads to seal structure inefficacy after the gasket damages easily, needs to change the problem that leads to use cost to increase often.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a mechanical seal structure that electric motor car was used, includes axle, lip and gasket, epaxial bearing that is equipped with, the bearing includes bearing inner ring and bearing outer loop, the assembly of bearing inner ring is epaxial, the epaxial end cover that has cup jointed, be equipped with the oil blanket body on the end cover, be equipped with the gasket on the oil blanket body.

Preferably, a clamp spring position is formed in the end cover, the clamp spring is arranged on the clamp spring position, a limiting position is arranged on the end cover and located on the inner side of the clamp spring, and a retainer is arranged on the oil seal body.

Preferably, an inner cavity is formed in the oil seal body, and sealing grease is injected into the inner cavity of the oil seal body.

Preferably, the lip is in interference fit with the shaft, the bearing outer ring is fixed on the end cover, and the oil seal body is fixedly connected with the end cover.

Preferably, the retainer is located between the clamp spring and the limiting part, the retainer is of a spring structure, and the retainer is in a compressed state.

(III) advantageous effects

The utility model provides a mechanical seal structure that electric motor car was used. The method has the following beneficial effects:

(1) the mechanical sealing structure for the electric vehicle realizes the purpose of dual water resistance by arranging the lip, the sealing sheet and the bearing inner ring, the lip is in interference fit with the shaft by arranging the lip on the shaft, the bearing is arranged on the shaft, the bearing inner ring is assembled on the shaft, the shaft is sleeved with the end cover, the end cover is arranged on the end cover, the sealing sheet is arranged on the oil seal body and serves as a first waterproof structure, the sealing sheet and the bearing inner ring serve as a second waterproof structure, and the waterproof performance of the mechanical sealing structure is enhanced by arranging the dual waterproof structure;

(2) this mechanical seal structure for electric motor car, life through the holder extension gasket, and the better sealing performance that plays of help gasket, through be equipped with jump ring and spacing on the end cover, set up the holder on the oil blanket body, the moderate degree deflection of holder has been guaranteed through spacing and jump ring, make the holder be compression state and possess certain pretightning force, the holder just can provide certain pressure for the gasket, it is big to make can not press too tightly between gasket and the bearing inner ring promptly and cause the electric current, and accelerated wear, thereby also can not lead to the packing force undersize and become invalid because too pine, can prolong the life of gasket under the effect of holder, even though the gasket has certain wearing and tearing simultaneously, still can make the fine sealing performance that plays of gasket under the effect of retainer plate.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a partial enlarged view of fig. 1-a of the present invention.

In the figure, a shaft-1, a lip-2, a sealing sheet-3, a bearing inner ring-4, sealing grease-5, a bearing-6, an end cover-7, a bearing outer ring-8, an oil seal body-9, a retainer-10, a clamp spring-11 and a limiting-12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, an embodiment of the present invention provides a technical solution: the utility model provides a mechanical seal structure that electric motor car was used, includes axle 1, lip 2 and gasket 3, be equipped with bearing 6 on the axle 1, bearing 6 includes bearing inner ring 4 and bearing outer ring 8, the assembly of bearing inner ring 4 is epaxial 1, the end cover 7 has been cup jointed on the axle 1, be equipped with oil blanket body 9 on the end cover 7, be equipped with gasket 3 on the oil blanket body 9, lip 2 is as first waterproof construction, and gasket 3 and bearing inner ring 4 are the waterproof construction of second way, through setting up dual waterproof construction reinforcing mechanical seal structure's waterproof performance.

The end cover 7 is provided with a clamp spring position, the clamp spring 11 is arranged on the clamp spring position, the end cover 7 is provided with a limit 12, the limit 12 is positioned on the inner side of the clamp spring 11, the oil seal body 9 is provided with a retainer 10, and the retainer 10 can provide certain pressure for the sealing sheet 3, so that the sealing sheet 3 and the bearing inner ring 4 are not pressed too tightly to cause large current, accelerated wear is realized, and the pressing force is not too small to fail due to too loose.

An inner cavity is formed in the oil seal body 9, sealing grease 5 is filled in the inner cavity of the oil seal body 9, the sealing grease 5 in the cavity is an auxiliary sealing mode, on one hand, lubrication can be provided for the lip 2, and on the other hand, when the first seal begins to fail, a certain sealing effect can be achieved.

Lip 2 and 1 interference fit of axle can guarantee the leakproofness of lip 2, bearing outer ring 8 is fixed on end cover 7, oil blanket body 9 and end cover 7 fixed connection.

The retainer 10 is located between the clamp spring 11 and the limit 12, the retainer 10 is of a spring structure, the retainer 10 is in a compression state, the limit 12 and the clamp spring 11 guarantee the appropriate deformation of the retainer 10, and the retainer 10 can have a certain pre-tightening force in the compression state.

The working principle is as follows: the mechanical sealing structure is provided with a double waterproof structure, the first weight is the lip 2 arranged on the shaft 1, the lip 2 and the shaft 1 are in interference fit, the sealing performance of the lip 2 can be ensured, meanwhile, the shaft 1 is sleeved with the end cover 7, the end cover 7 is provided with the oil seal body 9, the sealing sheet 3 is arranged in the oil seal body 9, the sealing sheet 3 and the bearing inner ring 4 can form a second weight waterproof structure, the sealing performance of the sealing structure is improved due to the arrangement of the double waterproof structure, the sealing waterproof effect can be effectively achieved, the service life of the motor of the electric vehicle is greatly prolonged, meanwhile, the sealing grease 5 is filled in the inner cavity of the oil seal body 9 to serve as an auxiliary seal, on one hand, the sealing grease can be provided for the lip 2 to be lubricated, on the other hand, when the first seal begins to fail, a certain sealing effect can also be achieved, in addition, through the clamp spring 11 and the limit 12 arranged on the end cover 7, set up holder 10 on oil blanket body 9, the moderate degree deflection of holder 10 has been guaranteed through spacing 12 and jump ring 11, make holder 10 be compression state and possess certain pretightning force, holder 10 just can provide certain pressure for gasket 3, make can not press between gasket 3 and the bearing inner ring 4 too tightly and cause the electric current big, and wearing and tearing with higher speed, thereby also can not lead to the packing force undersize and become invalid because of too pine, can prolong the life of gasket 3 under the effect of holder 10, even gasket 3 has certain wearing and tearing simultaneously, still can make the fine sealing performance that plays of gasket 3 under the effect of retainer plate.

The utility model discloses a axle 1, lip 2, gasket 3, bearing inner ring 4, sealed fat 5, bearing 6, end cover 7, bearing outer ring 8, oil blanket body 9, holder 10, jump ring 11, spacing 12, the part is the parts that general standard component or technical staff in the field know, and its structure and principle all can be known through the technical manual or through conventional experimental method for this technical staff, the problem that the utility model solves is that the existing mechanical seal structure in the prior art mostly adopts single waterproof construction, and waterproof effect is not good, damages the electric motor car easily; the structure that sets up the gasket class among the current mechanical seal structure damages easily, leads to seal structure inefficacy after the gasket damages easily, needs to change the problem that leads to the use cost to increase often, the utility model discloses a mutual combination of above-mentioned part realizes dual waterproof purpose through setting up lip and gasket and bearing inner ring, through the life of holder extension gasket to help the better sealing performance that plays of gasket.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A mechanical seal structure for an electric vehicle, characterized in that: including axle (1), lip (2) and gasket (3), be equipped with bearing (6) on axle (1), bearing (6) are including bearing inner ring (4) and bearing outer ring (8), bearing inner ring (4) assembly is on axle (1), end cover (7) have been cup jointed on axle (1), be equipped with oil blanket body (9) on end cover (7), be equipped with gasket (3) on oil blanket body (9).

2. The mechanical seal structure for an electric vehicle according to claim 1, characterized in that: the oil seal is characterized in that a clamp spring position is formed in the end cover (7), the clamp spring (11) is arranged on the clamp spring position, a limiting part (12) is arranged on the end cover (7), the limiting part (12) is located on the inner side of the clamp spring (11), and a retainer (10) is arranged on the oil seal body (9).

3. The mechanical seal structure for an electric vehicle according to claim 1, characterized in that: an inner cavity is formed in the oil seal body (9), and sealing grease (5) is injected into the inner cavity of the oil seal body (9).

4. The mechanical seal structure for an electric vehicle according to claim 1, characterized in that: lip (2) and axle (1) interference fit, bearing outer ring (8) are fixed on end cover (7), oil blanket body (9) and end cover (7) fixed connection.

5. The mechanical seal structure for an electric vehicle according to claim 2, characterized in that: the retainer (10) is located between the clamp spring (11) and the limiting block (12), the retainer (10) is of a spring structure, and the retainer (10) is in a compressed state.