CN217362696U

CN217362696U - Outer rotor assembly and motor using same

Info

Publication number: CN217362696U
Application number: CN202221256067.8U
Authority: CN
Inventors: 李浩然; 毛义胜; 何锦豪; 李卓
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-09-02
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses an external rotor assembly and motor of using thereof, include the sleeve shell, pivot, a plurality of magnetic shoe and the injection molding body of making by the metal, the sleeve shell includes sleeve portion and the roof that is located the sleeve portion top, and the sleeve portion encloses into cavity, its characterized in that with the roof: roof edge is equipped with a plurality of through-holes along circumference interval distribution, through-hole and cavity intercommunication, the injection molding body is including covering the annular plastics overcoat at the sleeve part surface, cover at roof edge outside surface mould the shrouding and be located the inside support of sleeve part, mould and be connected through a plurality of connecting rib between shrouding and the support, the connecting rib passes the through-hole, a plurality of magnetic shoes are installed on the internal face of sleeve part and are separated by the support and come, moreover, the steam generator is simple in structure, need not the installation, the reduction process, the labor cost is reduced, the assembly efficiency is improved, and the cohesion of the annular plastics overcoat of sleeve shell and injection molding body has been increased, the holistic structural strength is good.

Description

Outer rotor assembly and motor using same

The technical field is as follows:

the utility model relates to an external rotor assembly and motor of using thereof.

Background art:

the existing outer rotor assembly consists of a machine shell assembly, a magnetic shoe support, a magnetic shoe and a rotating shaft, the shaft is firstly put in and the magnetic shoe support is put in during assembly, and then the magnetic shoe is assembled, so that the operation steps of workers are multiple, the process is complicated, the installation is troublesome, the cost is high, and the assembly efficiency is low. In addition, the wind wheel is injected on the outer surface of the casing assembly, a layer of injection molding material exists above the casing after injection molding, the height of the whole machine can be increased, and the existing platform cannot meet the requirement of a customer on the height of the whole machine.

The invention content is as follows:

the utility model aims at providing an external rotor subassembly and motor of using thereof solves among the prior art that external rotor subassembly installation procedure is loaded down with trivial details, staff operating procedure is many, and the troublesome with high costs of installation, technical problem that assembly efficiency is low.

Another object of the utility model is to provide an external rotor subassembly and motor of using thereof solves among the prior art wind wheel, and the back casing top of moulding plastics can have the one deck injection molding material, can increase the height of complete machine, and present platform can't satisfy the technical problem of customer to the high product of requirement for height of complete machine

The purpose of the utility model is realized by the following technical scheme.

The utility model aims at providing an external rotor component, include sleeve shell, pivot, a plurality of magnetic shoe and the injection molding body of making by the metal, the sleeve shell includes sleeve portion and the roof that is located the sleeve portion top, and the sleeve portion encloses into cavity, its characterized in that with the roof: the edge of the top plate is provided with a plurality of through holes which are distributed at intervals along the circumferential direction, the through holes are communicated with the cavity, the injection molding body comprises an annular plastic outer sleeve which covers the outer surface of the sleeve part, a plastic sealing plate which covers the outer surface of the edge of the top plate and a support which is positioned in the sleeve part, the plastic sealing plate and the support are connected through a plurality of connecting ribs, the connecting ribs penetrate through the through holes, and a plurality of magnetic tiles are arranged on the inner wall surface of the sleeve part and are separated by the support.

The annular plastic outer sleeve, the plastic sealing plate, the bracket and the connecting ribs are integrally formed by injection molding.

A boss protrudes from the middle of the top plate, and a plurality of through holes distributed at intervals along the circumferential direction are distributed outside the boss.

The plastic sealing plate is annular and surrounds the outer part of the boss, and the height of the plastic sealing plate is equal to or less than that of the boss so as to expose the boss.

The outer surface of the annular plastic outer sleeve is provided with a plurality of fan blades at intervals along the circumferential direction, and the fan blades and the injection molding body are molded by injection together.

The bracket comprises an annular bracket body arranged in the sleeve part and a plurality of positioning lugs arranged on the annular bracket body, wherein a groove is arranged in the middle of each positioning lug, and the positioning lugs are used for separating two adjacent magnetic tiles.

The end face of the plastic sealing plate is provided with a plurality of first counterweight holes which are circumferentially distributed at intervals.

The bottom surface of the annular plastic outer sleeve is provided with a plurality of second weight ports which are circumferentially distributed at intervals.

An electric machine, includes external rotor subassembly and stator module, its characterized in that: the outer rotor component is the outer rotor component.

Compared with the prior art, the utility model, following effect has:

1) the utility model provides an outer rotor assembly, includes sleeve shell, pivot, a plurality of magnetic shoe and the injection molding body made by the metal, and the sleeve shell includes sleeve portion and the roof that is located the sleeve portion top, and the sleeve portion encloses into the cavity with the roof, its characterized in that: roof edge is equipped with a plurality of through-holes along circumference interval distribution, through-hole and cavity intercommunication, the injection molding body is including covering the annular plastics overcoat at the sleeve part surface, cover at roof edge outside surface mould the shrouding and be located the inside support of sleeve part, mould and be connected through a plurality of connecting rib between shrouding and the support, the connecting rib passes the through-hole, a plurality of magnetic shoes are installed on the internal face of sleeve part and are separated by the support and come, moreover, the steam generator is simple in structure, need not the installation, the reduction process, the labor cost is reduced, the assembly efficiency is improved, and the cohesion of the annular plastics overcoat of sleeve shell and injection molding body has been increased, the holistic structural strength is good.

2) The plastic sealing plate is annular and surrounds the outer part of the boss, the height of the plastic sealing plate is equal to or less than that of the boss so as to expose the boss, the structural arrangement is reasonable, the axial height of the whole machine is effectively reduced, and the requirement of a customer on the height of the whole machine is met.

2) Other advantages of the present invention will be described in detail in the examples section.

Description of the drawings:

fig. 1 is a perspective view provided in a first embodiment of the present invention;

fig. 2 is another perspective view of the first embodiment of the present invention;

fig. 3 is an exploded view of a first embodiment of the present invention;

fig. 4 is a perspective view of a sleeve housing according to an embodiment of the present invention;

fig. 5 is another exploded perspective view of the first embodiment of the present invention;

fig. 6 is a front view provided by the first embodiment of the present invention;

FIG. 7 is a cross-sectional view A-A of FIG. 6;

fig. 8 is a partially enlarged view of B in fig. 7.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.

As shown in fig. 1 to 8, the present embodiment provides an external rotor assembly, including a sleeve housing 1 made of metal, a rotating shaft 2, a plurality of magnetic shoes 3, and an injection molded body 4, where the sleeve housing 1 includes a sleeve portion 11 and a top plate 12 located at the top of the sleeve portion 11, the sleeve portion 11 and the top plate 12 enclose a cavity 10, and the external rotor assembly is characterized in that: the edge of the top plate 12 is provided with a plurality of through holes 13 distributed at intervals along the circumferential direction, the through holes 13 are communicated with the cavity 10, the injection molded body 4 comprises an annular plastic outer sleeve 41 covering the outer surface of the sleeve part 11, a plastic sealing plate 42 covering the outer surface of the edge of the top plate 12 and a support 43 positioned inside the sleeve part 11, the plastic sealing plate 42 is connected with the support 43 through a plurality of connecting ribs 44, the connecting ribs 44 penetrate through the through holes 13, a plurality of magnetic tiles 3 are installed on the inner wall surface of the sleeve part 11 and are separated by the support 43, the structure is simple, the installation is not needed, the working procedures are reduced, the labor cost is reduced, the assembly efficiency is improved, the binding force of the sleeve shell and the annular plastic outer sleeve of the injection molded body is increased, and the integral structural strength is good.

The annular plastic casing 41, the plastic sealing plate 42, the bracket 43 and the connecting ribs 44 are integrally formed by injection molding, so that the structure is simple, the manufacturing is easy, and the number of molds is reduced.

The boss 121 protrudes from the middle of the top plate 12, and the through holes 12 distributed at intervals along the circumferential direction are distributed outside the boss 121, so that the structural arrangement is reasonable, and the structure is simple.

The plastic sealing plate 42 is annular and surrounds the boss 121, the height of the plastic sealing plate 42 is equal to or less than that of the boss 121, so that the boss 121 is exposed, the structural arrangement is reasonable, the axial height of the whole machine is effectively reduced, and the requirement of a customer on the height of the whole machine is met.

The outer surface of the annular plastic outer sleeve 41 is provided with the plurality of fan blades 5 at intervals along the circumferential direction, the fan blades 5 and the injection molding body 4 are molded together by injection, the structure is simple, the manufacture is easy, and the number of molds is reduced.

The bracket 43 includes an annular frame body 431 mounted in the sleeve portion 11 and a plurality of positioning protrusions 432 arranged on the annular frame body, a groove 433 is arranged in the middle of each positioning protrusion 432, the positioning protrusions 432 separate two adjacent magnetic tiles 3, and both sides of each positioning protrusion have elasticity, so that the magnetic tiles can be conveniently inserted between the two adjacent positioning protrusions, and the installation is convenient.

The end face of the plastic sealing plate 42 is provided with a plurality of first weight holes 421 circumferentially distributed at intervals, and balance of the outer rotor assembly is adjusted by adding weight pieces, so that stability of high-speed operation is achieved, and noise is reduced.

The bottom surface of the annular plastic casing 41 is provided with a plurality of second weight ports 411 which are circumferentially distributed at intervals, and the balance of the outer rotor assembly is adjusted by adding weight parts, so that the stability of high-speed operation and the reduced noise are realized.

Example two:

an electric machine, includes external rotor subassembly and stator module, its characterized in that: the outer rotor assembly is the outer rotor assembly described in the first embodiment.

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 principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.

Claims

1. The utility model provides an outer rotor assembly, includes sleeve shell (1), pivot (2), a plurality of magnetic shoe (3) and injection molding (4) made by the metal, sleeve shell (1) include sleeve portion (11) and roof (12) that are located sleeve portion (11) top, sleeve portion (11) and roof (12) enclose into cavity (10), its characterized in that: the edge of the top plate (12) is provided with a plurality of through holes (13) which are distributed at intervals along the circumferential direction, the through holes (13) are communicated with the cavity (10), the injection molding body (4) comprises an annular plastic outer sleeve (41) which covers the outer surface of the sleeve part (11), a plastic sealing plate (42) which covers the outer surface of the edge of the top plate (12) and a support (43) which is positioned inside the sleeve part (11), the plastic sealing plate (42) is connected with the support (43) through a plurality of connecting ribs (44), the connecting ribs (44) penetrate through the through holes (13), and a plurality of magnetic tiles (3) are arranged on the inner wall surface of the sleeve part (11) and are separated by the support (43).

2. The external rotor assembly of claim 1, wherein: the annular plastic outer sleeve (41), the plastic sealing plate (42), the bracket (43) and the connecting rib (44) are integrally formed by injection molding.

3. The external rotor assembly of claim 2, wherein: a boss (121) protrudes from the middle of the top plate (12), and a plurality of through holes (13) distributed at intervals along the circumferential direction are distributed outside the boss (121).

4. The external rotor assembly of claim 3, wherein: the plastic sealing plate (42) is annular and surrounds the outer part of the boss (121), and the height of the plastic sealing plate (42) is equal to or less than that of the boss (121) so as to expose the boss (121).

5. An external rotor assembly according to claim 1, 2, 3 or 4, wherein: the outer surface of the annular plastic outer sleeve (41) is provided with a plurality of fan blades (5) at intervals along the circumferential direction, and the fan blades (5) and the injection molding body (4) are molded together by injection.

6. The external rotor assembly of claim 5, wherein: the support (43) comprises an annular support body (431) arranged in the sleeve portion (11) and a plurality of positioning lugs (432) arranged on the annular support body, a groove (433) is formed in the middle of each positioning lug (432), and the positioning lugs (432) separate two adjacent magnetic tiles (3).

7. The external rotor assembly of claim 6, wherein: the end face of the plastic sealing plate (42) is provided with a plurality of first counterweight holes (421) which are circumferentially distributed at intervals.

8. The external rotor assembly of claim 7, wherein: the bottom surface of the annular plastic outer sleeve (41) is provided with a plurality of second counterweight holes (411) which are distributed at intervals in the circumferential direction.

9. An electric machine, includes external rotor subassembly and stator module, its characterized in that: the external rotor component is the external rotor component according to any one of claims 1 to 8.