WO2015180329A1

WO2015180329A1 - Motor end cover and plastic packaged motor using same

Info

Publication number: WO2015180329A1
Application number: PCT/CN2014/087346
Authority: WO
Inventors: 潘明攀; 丁小勇
Original assignee: 中山大洋电机股份有限公司
Priority date: 2014-05-28
Filing date: 2014-09-24
Publication date: 2015-12-03
Also published as: CN203883594U

Abstract

A motor end cover and a plastic packaged motor using same. A bearing chamber (11) is provided in the middle of an end cover (1); a plurality of through-holes (12) are provided at the periphery of the bearing chamber on the end cover; an insulating sleeve (2) is nested and mounted on an inner wall of the bearing chamber, and extends outwardly at an opening of an end of the insulating sleeve to form an annular crimped edge (21); the annular crimped edge lies close against an inner surface of the end cover; a plurality of convex columns (22) protrude from the annular crimped edge; and the convex columns are nested inside the through-holes (12). A plastic packaged motor using the motor further comprises a rotating shaft (3), a rotor assembly (4), a plastic packaged stator (5), a front end cover (6) and a rear end cover (7). The motor end cover and the plastic packaged motor using same have simple structures, effectively prevent the generation of a shaft current, and prolong the service life of a bearing and a motor; and an end cover and an insulating layer are integrally combined into one piece, which is firm and reliable.

Description

Motor end cover and plastic sealing motor thereof

Technical field:

The utility model relates to a motor end cover and a plastic sealing motor thereof.

Background technique:

The existing motor end cover includes a bearing chamber in the middle of the motor end cover, and the bearing chamber is used for mounting the bearing, but the motor end cover lacks a design of anti-axis current, and the shaft is easily formed between the motor end cover, the bearing and the rotating shaft. Current and shaft current can seriously affect the service life of bearings and motors. There are safety hazards in use and low reliability.

Summary of the invention:

The utility model aims to provide a motor end cover and a plastic sealing motor thereof, which is simple in structure, effectively prevents the generation of the shaft current, prolongs the service life of the bearing and the motor, and the end cover and the insulating layer are integrated into one body, which is firm and reliable. The plastic sealing motor has the advantages of simple structure, high reliability and long service life.

The object of the present invention is achieved by the following technical solutions.

A motor end cover is provided with a bearing chamber in the middle of the end cover, wherein: a plurality of through holes are formed in the outer circumference of the bearing and the end cover, and an insulating sleeve is nested in the inner wall of the bearing chamber, and the insulating sleeve is An annular flange is extended outwardly from the opening of the end portion, and the annular flange is closely attached to the inner side surface of the end cover. A plurality of protrusions are protruded on the annular flange, and the protrusion is nested inside the through hole.

The end portion of the above-mentioned protruding post protrudes outwardly from the annular flange, and the bottom surface of the annular flange is pressed against the outer side surface of the end cover, and the end cover is made of a metal material.

The insulating sleeve and the annular flange described above are integrally injection molded on the end cap.

The number of through holes described above is five, and the through holes are evenly arranged circumferentially on the periphery of the bearing chamber.

A plastic-sealed motor includes a rotating shaft, a rotor assembly, a plastic-sealed stator, a front end cover and a rear end cover. The rotor assembly is mounted on the rotating shaft, and the plastic-sealed stator is nested outside the rotor assembly. The plastic-sealed stator includes a stator core, an end insulation, and a coil winding. And a plastic sealed casing, the end insulation is mounted on the end face of the stator core, the coil winding is wound on the end insulation, and the plastic casing is wrapped around the stator core, the end insulation, the coil winding and the rear end cover, and the front end cover is mounted on The end of the plastic case is provided with a bearing between the front end cover and the rear end cover a bearing is mounted in the bearing chamber, and the rotating shaft is supported on the bearing of the two end covers, and is characterized in that: a plurality of through holes are formed in the outer circumference of the bearing and the front end cover, and an insulating sleeve is nested in the inner wall of the bearing chamber. Extending the annular flange at the opening of the end of the insulating sleeve, the annular flange is closely attached to the inner side surface of the front end cover, and a plurality of protruding columns are protruded on the annular flange, and the protruding column is nested inside the through hole.

The end portion of the above-mentioned protruding post protrudes outwardly from the annular flange, and the bottom surface of the annular flange is pressed against the outer side surface of the front end cover, and the front end cover is made of a metal material.

The insulating sleeve and the annular flange described above are integrally injection molded on the front end cover.

Compared with the prior art, the utility model has the following effects: 1) an insulating sleeve is nested in the inner wall of the bearing chamber, and a circular flange is extended outwardly at the opening of the end portion of the insulating sleeve, and the annular flange is closely attached. On the inner side surface of the end cover, a plurality of protruding columns are protruded on the annular flange, and the protruding column is nested inside the through hole. The structure is simple, effectively preventing the generation of the shaft current, prolonging the service life of the bearing and the motor, and the end cover It is integrated with the insulating layer and is firm and reliable. 2) The end of the protruding post protrudes outwardly from the annular flange, and the bottom surface of the annular flange is pressed against the outer side surface of the end cover. The structure is simple, the installation is firm and reliable; 3) The insulating sleeve The cylinder and the annular flange are integrally injection-molded on the end cover, the production process is simple, the cost is low, and the mass production is convenient; 4) The plastic-sealed motor has a simple structure, high reliability and long service life.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a perspective view of the end cap of the present invention;

Figure 2 is an exploded view of the end cap of the present invention;

Figure 3 is a plan view of the end cap of the present invention;

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is a perspective view of the plastic-sealed motor of the present invention;

Figure 6 is an exploded view of the plastic motor of the present invention;

Figure 7 is a plan view of the plastic-sealed motor of the present invention;

Figure 8 is a cross-sectional view taken along line B-B of Figure 7;

detailed description:

The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.

Embodiment 1 As shown in FIG. 1 to FIG. 4 , the utility model is a motor end cover. A bearing chamber 11 is arranged in the middle of the end cover 1 , and a plurality of through holes 12 are formed on the outer periphery of the bearing chamber 11 and the end cover 1 . An insulating sleeve 2 is nested in the inner wall of the bearing chamber 11, and an annular flange 21 is extended outwardly at the opening of the end of the insulating sleeve 2, and the annular flange 21 is in close contact with the inner side surface of the end cover 1, A plurality of protrusions 22 are protruded from the annular flange 21, and the protrusions 22 are nested inside the through holes 12. The end of the boss 22 projects outwardly from the annular flange 23, and the bottom surface of the annular flange 23 is pressed against the outer side surface of the end cover 1, and the end cover 1 is made of a metal material. The insulating sleeve 2 and the annular flange 21 are integrally injection molded on the end cap 1. The number of the through holes 12 is five, and the through holes 12 are uniformly arranged circumferentially on the outer periphery of the bearing chamber 11.

The principle of the utility model is: an insulating sleeve 2 is nested on the inner wall of the bearing chamber 11, and an annular flange 21 is extended outwardly at the opening of the end of the insulating sleeve 2, and the annular flange 21 is closely attached to the end cover 1 On the inner side surface, a plurality of protrusions 22 are protruded on the annular flange 21, and the protrusions 22 are nested inside the through hole 12. The structure is simple, effectively preventing the generation of the shaft current, prolonging the service life of the bearing and the motor, and the end. The cover and the insulation layer are integrated into one body, which is firm and reliable.

Embodiment 2: As shown in FIG. 2, FIG. 5, FIG. 6, FIG. 7 and FIG. 8, the utility model is a plastic sealing motor, comprising a rotating shaft 3, a rotor assembly 4, a plastic sealing stator 5, a front end cover 6 and a rear end cover 7. The rotor assembly 4 is mounted on the rotating shaft 3, and the plastic sealing stator 5 is nested outside the rotor assembly 4. The plastic sealing stator 5 includes a stator core 51, an end insulation 52, a coil winding 53 and a plastic casing 54, and the end insulation 52 is mounted on the stator. On the end face of the core 51, the coil winding 53 is wound around the end insulation 52, and the plastic case 54 is wrapped around the stator core 51, the end insulation 52, the coil winding 53 and the rear end cover 7, and the front end cover 6 is mounted on the plastic seal At the end of the outer casing 54, a bearing chamber 11 is disposed between the front end cover 6 and the rear end cover 7, and a bearing 8 is mounted inside the bearing chamber 11, and the rotating shaft 3 is supported on the bearing 8 of the both end covers, at the periphery of the bearing chamber 11. A plurality of through holes 12 are formed in the front end cover 6, and an insulating sleeve 2 is nested on the inner wall of the bearing chamber 11, and an annular flange 21 is extended outwardly at the opening of the end portion of the insulating sleeve 2, and the annular flange 21 is tightly closed. Attached to the inner side surface of the front end cover 6, a plurality of protrusions 22 are protruded on the annular flange 21, and the protrusions 22 are nested in the 12 inside. The end of the boss 22 projects outwardly from the annular flange 23, and the bottom surface of the annular flange 23 is pressed against the outer side surface of the front end cover 6, and the front end cover 6 is made of a metal material. The insulating sleeve 2 and the annular flange 21 are integrally injection molded on the front end cover 6 Up. The number of the through holes 12 is five, and the through holes 12 are uniformly arranged circumferentially on the outer periphery of the bearing chamber 11.

The principle of the utility model is that an insulating sleeve 2 is nested in the inner wall of the bearing chamber 11, and an annular flange 21 is extended outwardly at the opening of the end of the insulating sleeve 2, and the annular flange 21 is closely attached to the front end cover 6. On the inner side surface, a plurality of protrusions 22 are protruded on the annular flange 21, and the protrusions 22 are nested inside the through holes 12. The plastic sealing motor has a simple structure, high reliability and long service life.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

A motor end cover is provided with a bearing chamber (11) in the middle of the end cover (1), characterized in that: a plurality of through holes (12) are started on the periphery of the bearing chamber (11) and on the end cover (1), in the bearing The inner wall of the chamber (11) is nested with an insulating sleeve (2), and an annular flange (21) is extended outwardly at the opening of the end of the insulating sleeve (2), and the annular flange (21) is closely attached to the end cover. On the inner side surface of (1), a plurality of protrusions (22) project from the annular flange (21), and the protrusions (22) are nested inside the through holes (12).
A motor end cover according to claim 1, wherein the end of the boss (22) projects outwardly from the annular flange (23), and the bottom surface of the annular flange (23) is pressed against the end cover (1). On the outer side, the end cap (1) is made of a metal material.
A motor end cap according to claim 1 or 2, characterized in that the insulating sleeve (2) and the annular flange (21) are integrally injection molded on the end cap (1).
A motor end cover according to claim 3, wherein the number of through holes (12) is five, and the through holes (12) are evenly arranged circumferentially on the periphery of the bearing chamber (11).
A plastic-sealed motor comprising a rotating shaft (3), a rotor assembly (4), a plastic-sealed stator (5), a front end cover (6) and a rear end cover (7), and the rotor assembly (4) is mounted on the rotating shaft (3), plastically sealed The stator (5) is nested outside the rotor assembly (4), and the molded stator (5) includes a stator core (51), an end insulation (52), a coil winding (53), and a plastic enclosure (54), and the end insulation ( 52) mounted on the end face of the stator core (51), the coil winding (53) is wound around the end insulation (52), and the plastic casing (54) is wrapped around the stator core (51) and the end insulation (52) Outside the coil winding (53) and the rear end cover (7), the front end cover (6) is mounted at the end of the plastic casing (54), and a bearing chamber is disposed between the front end cover (6) and the rear end cover (7) (11) A bearing (8) is mounted in the bearing chamber (11), and the rotating shaft (3) is supported on the bearing (8) of the both end covers, and is characterized in that: at the periphery of the bearing chamber (11), the front end cover (6) There are a plurality of through holes (12) at the beginning, and an insulating sleeve (2) is nested in the inner wall of the bearing chamber (11), and an annular flange is extended to the opening at the end of the insulating sleeve (2) (21) ), the annular flange (21) is in close contact with the inner side surface of the front end cover (6), and protrudes on the annular flange (21). Column (22), boss (22) nested in the through-hole (12) inside.
A plastic-sealed motor according to claim 5, wherein the end of the boss (22) projects outwardly from the annular flange (23), and the bottom surface of the annular flange (23) is pressed against the front end cover (6). On the outer side, the front end cover (6) is made of a metal material.
A plastic-sealed motor according to claim 5 or 6, characterized in that the insulating sleeve (2) and the annular flange (21) are integrally injection-molded on the front end cover (6).
A plastic-sealed motor according to claim 7, wherein the number of the through holes (12) is five, and the through holes (12) are evenly arranged circumferentially around the periphery of the bearing chamber (11).