CN215897442U

CN215897442U - Insulating end cover structure of motor

Info

Publication number: CN215897442U
Application number: CN202121650191.8U
Authority: CN
Inventors: 朱胜兰; 朱桢燚; 姚迎霞; 陈钰莲; 褚鹏; 王震
Original assignee: Wuxi Org Electric Co ltd
Current assignee: Wuxi Org Electric Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-02-22
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a motor insulation end cover structure which comprises a motor end cover, an insulation gasket, a bearing sleeve and an insulation ring body, wherein the motor end cover comprises a through hole which is axially formed, one end of the through hole is convexly provided with a baffle ring along the radial direction towards the inner side, the bearing sleeve is coaxially arranged in the through hole, the insulation ring body is arranged between the outer ring of the bearing sleeve and the inner wall of the through hole, and the insulation gasket is arranged between the end face of the bearing sleeve and the baffle ring. Increased insulating pad piece, on the one hand, the side insulating properties of assurance motor end cover and bearing housing that can be fine, on the other hand has made things convenient for the encapsulating, makes the difficult outflow of colloid during the encapsulating, has shortened process time greatly.

Description

Insulating end cover structure of motor

Technical Field

The utility model belongs to a motor structure, and particularly relates to an insulating end cover structure of a motor.

Background

The shaft voltage is an electrical phenomenon commonly existing in the operation process of the motor, when the shaft voltage is high, oil film breakdown is easily caused, so that a shaft and a bearing inner ring form metal contact to form considerable shaft current, the shaft diameter and the bearing are burnt, potential safety hazards are caused, and in order to prevent the damage, an insulating end cover is mainly adopted on the motor to prevent the damage.

Traditional insulating end cover structure causes the outflow of encapsulating or leads to the not thorough of encapsulating easily in the hot cover encapsulating, and the actual processing difficulty leads to the end cover uninsulation, has certain potential safety hazard.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides the motor insulation end cover structure which can effectively insulate the motor end cover and the bearing sleeve and prevent the generation of shaft voltage.

The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides an insulating end cover structure of motor, includes motor end cover, insulating gasket, bearing housing and insulating ring body, the motor end cover contains the axial perforating hole of seting up, the one end of perforating hole is along radially inwards protruding being equipped with the fender ring to the inboard, the bearing housing is coaxial to be set up in the perforating hole, just be provided with insulating ring body between the outer lane of bearing housing and the inner wall of perforating hole, the terminal surface of bearing housing and keep off and be provided with insulating gasket between the ring.

Further, the insulating ring body is an epoxy resin layer.

Furthermore, the insulating ring body is formed by cooling liquid epoxy resin poured and filled in a cavity gap between the bearing sleeve and the through hole.

Furthermore, the outer ring wall of the bearing sleeve comprises at least one glue filling ring groove which is coaxially arranged in the axial direction.

Furthermore, the glue filling ring groove is rectangular or V-shaped.

Furthermore, the outer ring wall of the bearing sleeve is concavely provided with guide through grooves extending along the axial direction, and the guide through grooves are arranged on the bearing sleeve in a circumferential array.

Further, the guide through groove is of a linear through groove structure.

Furthermore, the insulating spacers comprise a plurality of insulating spacers, and the insulating spacers are arranged in a mutually-overlapped contact manner in the axial direction.

Furthermore, the insulating gasket is made of an epoxy pressing plate material.

Has the advantages that: according to the motor insulation end cover structure, the insulation gasket is additionally arranged, so that on one hand, the insulation performance of the side edges of the motor end cover and the bearing sleeve can be well guaranteed, on the other hand, glue filling is facilitated, glue is not prone to flowing out during glue filling, and the processing time is greatly shortened.

Drawings

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

FIG. 2 is an enlarged view of the structure of the portion I of the present invention;

FIG. 3 is a schematic view of a half-section of the structure of the bearing housing of the present invention;

fig. 4 is a schematic perspective view of the bearing housing of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, an insulating end cover structure of a motor comprises a motor end cover 1, an insulating gasket 2, a bearing sleeve 3 and an insulating ring body 4, wherein the motor end cover 1 comprises a through hole 6 which is axially formed, one end of the through hole is provided with a baffle ring 5 which protrudes towards an inner ring along a radial direction, the bearing sleeve 3 is coaxially arranged in the through hole, the insulating ring body 4 is arranged between an outer ring of the bearing sleeve 3 and an inner wall of the through hole 6, the outer wall of the bearing sleeve 3 is insulated from the motor end cover 1 through the insulating ring body 4, the insulating gasket 2 is arranged between an end face of the bearing sleeve 3 and the baffle ring 5, the baffle ring 5 is used for positioning the insulating gasket 2 and the insulating ring body 4, and the insulating gasket 2 is used for insulating the end face of the bearing sleeve 3 and the motor end cover 1, on one hand, the insulating performance of the motor end cover and the side of the bearing sleeve can be well ensured by adding the insulating gasket 2, on the other hand, the glue pouring is facilitated, the glue is not easy to flow out during glue pouring, and the processing time can be greatly shortened.

The insulating ring body 4 is an epoxy resin layer, and the insulating ring body 4 is formed by cooling liquid epoxy resin poured and filled in a cavity gap between the bearing sleeve 3 and the through hole 6. Before glue pouring, the insulating gasket 2 is installed on the baffle ring 5, then the bearing sleeves 3 are placed on the inner sides of the through holes 6 at intervals, a glue pouring cavity is formed between the bearing sleeves 3 and the motor end cover 1, then liquid epoxy resin is poured into the glue pouring cavity, and the glue is cooled and solidified.

As shown in fig. 2 to 4, the outer annular wall of the bearing sleeve 3 includes at least one glue-pouring ring groove 7 coaxially formed thereon in the axial direction, and the glue-pouring ring groove 7 is rectangular or V-shaped. Through encapsulating annular 7 with the volume of promoting the encapsulating chamber to the colloid, promote the area of contact of colloid and bearing housing 3, promote stability and insulating properties.

The outer ring wall of the bearing sleeve 3 is concavely provided with guide through grooves 8 extending along the axial direction, the guide through grooves 8 are circumferentially arrayed on the bearing sleeve 3, and the guide through grooves 8 are of a linear through groove structure. Through the through groove 8 that leads to, can make the better inflow of encapsulating between motor end cover 1 and bearing housing 3 for fill more evenly and the filling in the encapsulating chamber.

Insulating pad 2 contains a plurality of, insulating pad 2 is the epoxy clamp plate material, insulating pad 2 is the loop body structure, and is a plurality of insulating pad 2 is the mutual stack contact setting in the axial. When the encapsulating, the colloid that overflows can flow into between a plurality of range upon range of insulating spacers, promotes insulating properties on the one hand, and on the other hand can prevent that the colloid from outwards overflowing, reduces the sequent clearance step, promotes whole production efficiency.

A plurality of seepage holes are formed in the insulating gaskets 2, and when glue is poured, flowing glue can flow into the space between the plurality of stacked insulating gaskets through the seepage holes.

As shown in fig. 3, the glue injection ring groove 9 with a circular bead shape is concavely arranged on the outer wall of the bearing sleeve 3 corresponding to the insulating gasket 2, the end face of the bearing sleeve 3 abuts against the insulating gasket 2, the glue injection ring groove 9 is used for accommodating glue, and the glue can be connected to the insulating gasket 2 and the bearing sleeve 3.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. The utility model provides an insulating end cover structure of motor which characterized in that: including motor end cover (1), insulating washer (2), bearing housing (3) and insulating ring body (4), motor end cover (1) contains axial through-hole (6) of seting up, the one end of through-hole is along protruding fender ring (5) of being equipped with to the inboard side, the coaxial setting of bearing housing (3) is in the through-hole, just be provided with insulating ring body (4) between the inner wall of the outer lane of bearing housing (3) and through-hole (6), be provided with insulating washer (2) between the terminal surface of bearing housing (3) and fender ring (5).

2. The motor insulation end cover structure according to claim 1, wherein: the insulating ring body (4) is an epoxy resin layer.

3. An electric machine insulating end cap structure according to claim 2, wherein: the insulating ring body (4) is formed by pouring liquid epoxy resin filled in a cavity gap between the bearing sleeve (3) and the through hole (6) and cooling the liquid epoxy resin.

4. The motor insulation end cover structure according to claim 1, wherein: the outer ring wall of the bearing sleeve (3) comprises at least one glue filling ring groove (7) which is coaxially arranged in the axial direction.

5. The motor insulation end cover structure according to claim 4, wherein: the glue filling ring groove (7) is rectangular or V-shaped.

6. The motor insulation end cover structure according to claim 4, wherein: the bearing sleeve is characterized in that guide through grooves (8) extending along the axial direction are concavely arranged on the outer annular wall of the bearing sleeve (3), and a plurality of guide through grooves (8) are circumferentially arranged on the bearing sleeve (3) in an array manner.

7. The motor insulation end cover structure according to claim 6, wherein: the guide through groove (8) is of a linear through groove structure.

8. The motor insulation end cover structure according to claim 1, wherein: the insulating gaskets (2) comprise a plurality of insulating gaskets, and the insulating gaskets (2) are arranged in a mutually-overlapped contact mode in the axial direction.

9. The motor insulation end cover structure according to claim 1, wherein: the insulating gasket (2) is made of an epoxy pressing plate material.