CN215580656U

CN215580656U - Electric vehicle motor end cover

Info

Publication number: CN215580656U
Application number: CN202121866391.7U
Authority: CN
Inventors: 林桂青
Original assignee: Taizhou Fanlin Vehicle Parts Co ltd
Current assignee: Taizhou Fanlin Vehicle Parts Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-01-18
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses an electric vehicle motor end cover which comprises an end cover body with a shaft hole and further comprises a plurality of first wear-resisting grooves, wherein the first wear-resisting grooves are uniformly distributed along the inner wall of the shaft hole and extend along the axial direction of the shaft hole, and the second wear-resisting grooves are coaxially arranged with the shaft hole and are interwoven with the first wear-resisting grooves to form a grid shape.

Description

Electric vehicle motor end cover

Technical Field

The utility model belongs to the technical field of electric vehicle motors, and particularly relates to an electric vehicle motor end cover.

Background

The motor is a whole vehicle driving unit of the electric vehicle, the motor end cover is a cover for sealing the motor, a motor shaft of the motor penetrates through the motor end cover, so that the shaft hole of the motor end cover is abraded in the rotating process of the motor shaft, and the abrasion of the shaft hole easily causes the shaking of the motor or the reduction of the service life of the motor; and current motor end cover is the end cover structure of the motor end cover of taking the wind scooper like chinese utility model patent grant publication No. CN211830399U, and the wear-resisting effect of the motor end cover of this type of structure is unsatisfactory to the performance and the life of motor end cover or even motor have been influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the wear-resistant electric vehicle motor end cover with a simple structure.

In order to achieve the purpose, the utility model provides the following technical scheme: an electric vehicle motor end cover comprises an end cover body with a shaft hole and further comprises

The first wear-resisting grooves are uniformly distributed along the inner wall of the shaft hole and extend along the axial direction of the shaft hole,

and the second wear-resisting grooves are coaxially arranged with the shaft hole and are interlaced with the first wear-resisting grooves to form a grid shape.

Through adopting foretell technical scheme, the area of contact between motor shaft and the shaft hole can be reduced in the cooperation of the first wear-resisting groove of setting and the wear-resisting groove of second to reduce frictional force and wearing and tearing, and the resistant groove of rubbing can hold some hard matters of small granule, thereby further reduce the wearing and tearing of motor end cover.

The utility model is further configured to: also comprises

The wear-resistant composite layer is arranged on the inner wall of the shaft hole.

Through adopting foretell technical scheme, the wear-resisting effect in the shaft hole of motor end cover can further be ensured to the wear-resisting composite bed that sets up.

The utility model is further configured to: the first wear-resisting groove comprises

The first cambered surfaces and the two first cambered surfaces are connected with the shaft hole walls on two sides.

Through adopting foretell technical scheme, set up first cambered surface portion and can ensure the stability of being connected between first wear-resisting groove and the shaft hole to can eliminate certain stress, thereby ensure the practicality in first wear-resisting groove.

The utility model is further configured to: the first wear-resisting groove also comprises

And one ends of the two bearing parts are respectively connected with the lower end of the first cambered surface part on one side, and the other ends of the two bearing parts are connected to form a V shape.

Through adopting foretell technical scheme, set up the depth that the accepting part can deepen first wear-resisting groove to ensure first wear-resisting groove can the holding capacity.

The utility model is further configured to: the section of the second wear-resisting groove is arc-shaped, and the depth of the second wear-resisting groove is smaller than that of the first wear-resisting groove.

By adopting the technical scheme, the section of the second wear-resistant groove is arc-shaped, so that the structural strength of the second wear-resistant groove can be ensured.

The utility model is further configured to: the wear-resistant composite layer comprises

A chromium alloy layer plated on the inner wall of the shaft hole,

ZS-922 transparent wear-resistant coating, ZS-922 transparent wear-resistant coating is coated on the outer side of the chromium alloy layer.

By adopting the technical scheme, the wear-resistant effect of the wear-resistant composite layer can be ensured through the multi-layer wear-resistant layer structure.

The utility model is further configured to: and the first wear-resisting groove and the second wear-resisting groove are filled with solid lubricant.

Through adopting foretell technical scheme, it has solid lubricant to fill in first wear-resisting groove and the second wear-resisting groove to still ensure the wearability when having ensured lubricated effect.

The utility model is further configured to: the bearing part is arc-shaped.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is an enlarged partial cross-sectional view taken at I in FIG. 2;

reference numbers in the drawings and corresponding part names: the wear-resistant end cover comprises an end cover body 1, an axle hole 2, a first wear-resistant groove 3, a first cambered surface portion 3a, a bearing portion 3b, a second wear-resistant groove 4, a wear-resistant composite layer 5, a chromium alloy layer 5a and a transparent wear-resistant coating 5 b-ZS-922.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 3.

Example one

An electric motor car motor end cover comprises an end cover body 1 with a shaft hole 2 and further comprises

The first wear-resisting grooves 3 are uniformly distributed along the inner wall of the shaft hole 2 and extend along the axial direction of the shaft hole 2,

and the second wear-resistant grooves 4 are coaxially arranged with the shaft hole 2, and are interlaced with the first wear-resistant grooves 3 to form a grid shape.

The contact area between the motor shaft and the shaft hole 2 can be reduced through the matching of the first wear-resisting groove 3 and the second wear-resisting groove 4, so that the friction force and the abrasion are reduced, and the wear-resisting groove can contain some small-particle hard objects, so that the abrasion of the motor end cover is further reduced.

Example two

Further on the basis of the first embodiment: also comprises

And the wear-resistant composite layer 5 is arranged on the inner wall of the shaft hole 2.

Through adopting foretell technical scheme, the wear-resisting effect in shaft hole 2 of motor end cover can further be ensured to wear-resisting composite bed 5 that sets up.

EXAMPLE III

On the basis of the second embodiment: the first wear-resisting groove 3 comprises

The first arc surface parts 3a, two first arc surface parts 3a connect the shaft hole 2 walls at two sides.

The stability of connection between the first wear-resistant groove 3 and the shaft hole 2 can be ensured by providing the first arc-shaped surface portion 3a, and certain stress can be eliminated, so that the practicability of the first wear-resistant groove 3 is ensured.

Example four

Further on the basis of the third embodiment: said first wear-resistant groove 3 further comprises

And two receiving parts 3b, one ends of the two receiving parts 3b are respectively connected with the lower end of the first arc surface part 3a on one side, and the other ends of the two receiving parts 3b are connected to form a V shape.

The depth of the first wear-resistant groove 3 can be increased by providing the receiving portion 3b, thereby ensuring the accommodative capacity of the first wear-resistant groove 3.

EXAMPLE five

Further on the basis of example four: the section of the second wear-resisting groove 4 is arc-shaped, and the depth of the second wear-resisting groove 4 is smaller than that of the first wear-resisting groove 3.

The cross section of the second wear-resistant groove 4 is arc-shaped, so that the structural strength of the second wear-resistant groove 4 can be ensured.

EXAMPLE six

Further on the basis of example five: the abrasion-resistant composite layer 5 comprises

A chromium alloy layer 5a, the chromium alloy layer 5a is plated on the inner wall of the shaft hole 2,

ZS-922 transparent wear-resistant coating 5b, and ZS-922 transparent wear-resistant coating 5b is coated on the outer side of the chromium alloy layer 5 a.

The wear-resistant effect of the wear-resistant composite layer 5 can be ensured by the multi-layer wear-resistant layer structure.

EXAMPLE seven

Further on the basis of example six: the first wear-resistant groove 3 and the second wear-resistant groove 4 are filled with a solid lubricant.

The first wear-resistant groove 3 and the second wear-resistant groove 4 are filled with a solid lubricant, so that the lubrication effect and the wear resistance are ensured.

Further: the receiving part 3b is arc-shaped.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides an electric motor car motor end cover, includes end cover body (1) of taking shaft hole (2), characterized by: also comprises

The first wear-resistant grooves (3) are uniformly distributed along the inner wall of the shaft hole (2) and extend along the axial direction of the shaft hole (2),

the second wear-resisting grooves (4) are coaxially arranged with the shaft hole (2), and are interwoven with the first wear-resisting grooves (3) to form a grid shape.

2. The electric vehicle motor end cover of claim 1, wherein: also comprises

The wear-resistant composite layer (5) is arranged on the inner wall of the shaft hole (2).

3. The electric vehicle motor end cover of claim 2, wherein: the first wear-resisting groove (3) comprises

The two first arc surface parts (3a) are connected with the walls of the shaft holes (2) at two sides.

4. The electric vehicle motor end cover of claim 3, wherein: the first wear-resisting groove (3) also comprises

And the two bearing parts (3b), one ends of the two bearing parts (3b) are respectively connected with the lower end of the first arc surface part (3a) on one side, and the other ends of the two bearing parts (3b) are connected to form a V shape.

5. The electric vehicle motor end cover of claim 4, wherein: the section of the second wear-resistant groove (4) is arc-shaped, and the depth of the second wear-resistant groove (4) is smaller than that of the first wear-resistant groove (3).

6. The electric vehicle motor end cover of claim 5, wherein: the wear-resistant composite layer (5) comprises

A chromium alloy layer (5a), the chromium alloy layer (5a) is plated on the inner wall of the shaft hole (2),

ZS-922 transparent wear-resistant coating (5B), and the ZS-922 transparent wear-resistant coating (5B) is coated on the outer side of the chromium alloy layer (5 a).

7. The electric vehicle motor end cover of claim 6, wherein: and solid lubricants are filled in the first wear-resistant groove (3) and the second wear-resistant groove (4).

8. The electric vehicle motor end cover of claim 7, wherein: the bearing part (3b) is arc-shaped.