CN103855824A

CN103855824A - Motor rotor assembly

Info

Publication number: CN103855824A
Application number: CN201210508810.9A
Authority: CN
Inventors: 潘明攀; 范建明
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2012-11-30
Filing date: 2012-11-30
Publication date: 2014-06-11
Anticipated expiration: 2032-11-30
Also published as: CN103855824B

Abstract

The invention discloses a motor rotor assembly. The motor rotor assembly comprises a permanent magnet, a rotor iron core and a magnetic ring. The rotor iron core comprises an annular ring and a plurality of permeability blocks, wherein the annular ring is provided with a center axle hole, and the permeability blocks protrude out of the outer side of the annular ring, through holes are formed in the permeability blocks, a radial groove is formed between every two adjacent permeability blocks, the permeability blocks are embedded into the radial grooves, the end face and the bottom face of the rotor iron core are provided with an end plate and a bottom plate in an injection molding mode respectively, the end plate and the bottom plate are connected into a whole through a connecting column penetrating through the through holes, the end face of the end plate is provided with an annular groove, and the magnetic ring is embedded into the annular groove. The motor rotor assembly is simple in structure, easy to install, and good in inducting effect, the magnetic ring materials are saved, and cost is reduced.

Description

A kind of motor rotor component

Technical field:

The present invention relates to a kind of motor rotor component, belong to DC brushless motor field.

Background technology:

The rotor assembly of traditional DC brushless motor (BLDC MOTOR), generally comprise rotor core, permanent magnet, magnet ring support and magnet ring, permanent magnet is arranged on rotor core, magnet ring support and rotor core connect, magnet ring is nested on magnet ring support, this complex structure, installation bother, magnet ring induction is poor, and preferably end face induction structure of employing inductive effects, magnet ring is generally disc type, magnet ring center is provided with an axis hole and coordinates with motor shaft, this magnet ring material usage is many, and utilance is low, and cost is high.

Summary of the invention:

The object of this invention is to provide a kind of motor rotor component, this is simple in structure, installs simple and easyly, saves magnet ring material, reduce costs, and inductive effects is good.

The object of the invention is to be achieved by following technical scheme.

A kind of motor rotor component, comprise permanent magnet, rotor core and magnet ring, rotor core comprises some magnetic inductive blocks that are provided with the annular ring of central shaft hole and protrude from annular ring outside, on magnetic inductive block, offer through hole, between adjacent two magnetic inductive blocks, form radial groove, permanent magnet embeds in radial groove, on the end face of rotor core and bottom surface, is injected with respectively end plate and base plate, end plate is in aggregates by being connected through the joint pin of through hole with base plate, on the end face of end plate, annular groove is set.

Described above on bottom portion of groove, end plate, protrude some fixture blocks, fixture block embeds in the draw-in groove of offering on the bottom surface of magnet ring.

Magnet ring described above is concentric with central shaft hole, and magnet ring is close on end plate by rotor core absorption.

On the both sides magnetic inductive block of the peristome of radial groove described above, protrude stop hook, be injected with outer panel at inner side, the peristome place of stop hook, outer panel and end plate and base plate are integrally connected.

In the middle of bottom at radial groove described above, boss is set, is injected with interior plate in boss both sides, interior plate and end plate and base plate are integrally connected.

The lateral surface of magnetic inductive block described above is the arcwall face exposing, and lateral surface is that some A take the center O certain distance H of off center axis hole is as the center of circle.

On end plate described above and base plate, be respectively equipped with clay groove.

Some fixture blocks described above are 3, asymmetric being distributed on end plate.

End plate, base plate, joint pin, outer panel and interior plate integrated injection molding described above.

The present invention's beneficial effect is compared with prior art:

1) on the end face of end plate of the present invention, annular groove is set, magnet ring embeds in groove, because the pole orientation of magnet ring is consistent with rotor core pole orientation below, be close on end plate by rotor core absorption, simple in structure, install simple and easy, save material, reduce costs, strengthen magnet ring induction, reduce the interference that magnet ring induction is subject to the main field of permanent magnet generation, inductive effects is good.

2) on bottom portion of groove, end plate, protrude some fixture blocks, fixture block embeds in the draw-in groove of offering on the bottom surface of magnet ring, circumferentially locates for magnet ring, installs simple and easy.

3) magnet ring is concentric with central shaft hole, and magnet ring is close on end plate by rotor core absorption, and induced field is even, and inductive effects is good, realizes ring axial magnetic orientation assemble, installs simple and easy.

4) on the both sides magnetic inductive block of the peristome of radial groove, protrude stop hook, inner side, peristome place at stop hook are injected with outer panel, outer panel and end plate and base plate are integrally connected, boss is set in the middle of the bottom of radial groove, be injected with interior plate in boss both sides, interior plate and end plate and base plate are integrally connected, and end plate, base plate, outer panel and interior plate wrap permanent magnet, connect fastening.

5) on end plate and base plate, be respectively equipped with clay groove, clay groove is used for placing proofreaies and correct dynamically balanced clay, facilitates simple and easy.

6) end plate, base plate, joint pin, outer panel, interior plate and magnet ring support integrated injection molding, simplifies working process, and saves cost of labor.

Accompanying drawing explanation:

Fig. 1 is the stereogram of invention;

Fig. 2 is exploded view of the present invention;

Fig. 3 is front view of the present invention;

Fig. 4 is the A-A phantom of Fig. 3;

Fig. 5 is the B-B partial enlarged drawing of Fig. 4;

Fig. 6 is end view of the present invention;

Fig. 7 is the C-C phantom of Fig. 6;

Fig. 8 is the local structure for amplifying schematic diagram of rotor core of the present invention.

Embodiment:

Below by specific embodiment, also the present invention is described in further detail by reference to the accompanying drawings.

Embodiment mono-: as shown in Fig. 1 and Fig. 8, the present invention is a kind of motor rotor component, comprise permanent magnet 1, rotor core 2 and magnet ring 4, rotor core 2 comprises the some magnetic inductive blocks 23 that are provided with the annular ring 22 of central shaft hole 21 and protrude from annular ring 22 outsides, on magnetic inductive block 23, offer through hole 27, between adjacent two magnetic inductive blocks 23, form radial groove 24, permanent magnet 1 embeds 24 li of radial grooves, on the end face of rotor core 2 and bottom surface, be injected with respectively end plate 35 and base plate 36, end plate 35 is connected in aggregates with base plate 36 by the joint pin 37 through through hole 27, annular groove 350 is set on the end face of end plate 35, magnet ring 4 embeds 350 li of grooves.

Embodiment bis-: as shown in Figure 2, increase following technical characterictic on the basis of embodiment mono-: protrude some fixture blocks 351 on groove 350 bottoms, end plate 35, fixture block 351 embeds 41 li of the draw-in grooves offered on the bottom surface of magnet ring 4.

Embodiment tri-: as shown in Figure 4, increase following technical characterictic: magnet ring 4 is concentric with central shaft hole 21 on the basis of embodiment mono-or embodiment bis-, magnet ring 4 is close on end plate 35 by rotor core 2 absorption.

Embodiment tetra-: as shown in Fig. 4 and Fig. 7, on the basis of embodiment mono-, increase following technical characterictic: on the both sides magnetic inductive block 23 of the peristome 25 of radial groove 24, protrude stop hook 26, inner side, peristome 25 places at stop hook 26 are injected with outer panel 38, and outer panel 38 is integrally connected with end plate 35 and base plate 36.

Embodiment five: as shown in Figure 7, increase following technical characterictic on the basis of embodiment tetra-: in the middle of the bottom of radial groove 24, boss 28 is set, is injected with interior plate 39 in boss 28 both sides, interior plate 39 is integrally connected with end plate 35 and base plate 36.

Embodiment six: as shown in Figure 8, increase following technical characterictic on the basis of embodiment mono-: the lateral surface 231 of magnetic inductive block 23 is the arcwall faces that expose, lateral surface 231 is that some A take the center O certain distance H of off center axis hole 21 is as the center of circle.

Embodiment seven: as shown in Figure 4, increase following technical characterictic on the basis of embodiment mono-: be respectively equipped with clay groove 5a, 5b on end plate 35 and base plate 36.

Embodiment eight: as shown in Figure 2, increase following technical characterictic on the basis of embodiment bis-: some fixture blocks 351 are 3, asymmetric being distributed on end plate 35.

Embodiment nine: as shown in Fig. 4 and Fig. 7, increase following technical characterictic on the basis of embodiment five: end plate 35, base plate 36, joint pin 37, outer panel 38 and interior plate 39 integrated injection moldings.

Because the application is mechanical field, the apparent association of ability those of ordinary skill obtains: the technical characterictic independent assortment of the increase that embodiment bis-, embodiment tri-, embodiment tetra-, embodiment five, embodiment six, embodiment seven, embodiment eight and embodiment nine mention, is combined into new technical scheme with the technical scheme of embodiment mono-.

As shown in Figure 5, arrow represents the direction in magnetic field, and the magnetic direction that rotor core 2 of the present invention produces is consistent with the magnetic direction of magnet ring 4, the magnetic field that rotor core 2 produces has strengthened the induction in magnet ring 4 magnetic fields, reduces and disturbs, and effectively prevents magnet ring 4 to demagnetize, meanwhile, magnet ring 4 is inhaled mutually with rotor core 2, and magnet ring 4 is attracted on end 35, simplify installation procedure, simple in structure, install simple and easyly, save magnet ring material, reduce costs, inductive effects is good.

Claims

1. a motor rotor component, comprise permanent magnet (1), rotor core (2) and magnet ring (4), rotor core (2) comprises the some magnetic inductive blocks (23) that are provided with the annular ring (22) of central shaft hole (21) and protrude from annular ring (22) outside, on magnetic inductive block (23), offer through hole (27), between adjacent two magnetic inductive blocks (23), form radial groove (24), it is inner that permanent magnet (1) embeds radial groove (24), it is characterized in that: on the end face of rotor core (2) and bottom surface, be injected with respectively end plate (35) and base plate (36), end plate (35) is connected in aggregates with base plate (36) by the joint pin through through hole (27) (37), annular groove (350) is set on the end face of end plate (35), it is inner that magnet ring (4) embeds groove (350).

2. a kind of motor rotor component according to claim 1, is characterized in that: at groove (350) bottom, end plate (35) the some fixture blocks of upper protrusion (351), it is inner that fixture block (351) embeds the draw-in groove (41) of offering on the bottom surface of magnet ring (4).

3. a kind of motor rotor component according to claim 1 and 2, is characterized in that: magnet ring (4) is concentric with central shaft hole (21), and magnet ring (4) is close on end plate (35) by rotor core (2) absorption.

4. a kind of motor rotor component according to claim 1, it is characterized in that: the upper stop hook (26) that protrudes of both sides magnetic inductive block (23) of the peristome (25) of radial groove (24), inner side, peristome (25) in stop hook (26) locate to be injected with outer panel (38), and outer panel (38) is integrally connected with end plate (35) and base plate (36).

5. a kind of motor rotor component according to claim 4, it is characterized in that: boss (28) is set in the middle of the bottom of radial groove (24), be injected with interior plate (39) in boss (28) both sides, interior plate (39) is integrally connected with end plate (35) and base plate (36).

6. a kind of motor rotor component according to claim 1, it is characterized in that: the lateral surface (231) of magnetic inductive block (23) is the arcwall face exposing, lateral surface (231) is that point (A) take the center O certain distance H of off center axis hole (21) is as the center of circle.

7. a kind of motor rotor component according to claim 1, is characterized in that: on end plate (35) and base plate (36), be respectively equipped with clay groove (5a, 5b).

8. a kind of motor rotor component according to claim 2, is characterized in that: some fixture blocks (351) are 3, asymmetric being distributed on end plate (35).

9. a kind of motor rotor component according to claim 5, is characterized in that: end plate (35), base plate (36), joint pin (37), outer panel (38) and interior plate (39) integrated injection molding.