CN102611226A

CN102611226A - Motor rotor

Info

Publication number: CN102611226A
Application number: CN2011104371100A
Authority: CN
Inventors: 朱春富; 朱人杰; 顾学明; 屈健伦; 费洪明; 王寿根
Original assignee: Zhejiang Jeamo Motor Co Ltd
Current assignee: Zhejiang Jeamo Motor Co Ltd
Priority date: 2011-12-23
Filing date: 2011-12-23
Publication date: 2012-07-25

Abstract

The invention designs a motor rotor, mainly comprising permanent magnets. Each inner iron core and each outer iron core are both in an annular structure; four convex blocks are uniformly arranged on the periphery of the inner iron core; an outer iron core is sleeved outside the inner iron core; four convex blocks are arranged on the outer iron core and at the corresponding positions of the convex blocks on the inner iron core; gaps are reserved among the convex blocks of the inner iron core and the convex blocks of the outer iron core; eight permanent magnets are uniformly arranged on the periphery of the outer iron core; the inner iron core, the outer iron core and the permanent magnets are fixed through a plastic molding manner; and plastic is coated on the outer surfaces and two ends of the inner iron core, the outer iron core and the permanent magnets. With the adoption of the motor rotor, the internal discharging corrosion rate of a bearing of a motor can be reduced due to the arrangement of the inner iron core, the outer iron core and the gaps between the inner iron core and the outer iron core, so that the use properties and the service life of the motor are improved. Meanwhile, the motor rotor has the advantages of firm connection, good fixing effect, and insulating effect through plastic package. Furthermore, the corresponding convex blocks are arranged at the outer side of the inner iron core and the inner side of the outer iron core, so that the connection firmness between the inner iron core and plastic as well as between the outer iron core and the plastic can be improved, and the service life is prolonged.

Description

Rotor

Technical field

The present invention relates to the motor production field, especially a kind of rotor.

Background technology

Its rotor of prior motor all adopts one-body molded iron core; In iron core external stability permanent magnet is arranged; Such structure because iron core directly contacts with rotating shaft, makes the inner discharge corrosion situation that takes place of motor bearings easily in the motor use; Thereby influence the normal operation and the use of motor, reduce the useful life of motor.

Summary of the invention

The objective of the invention is to provide a kind of and can effectively reduce the rotor that the motor bearings internal discharge corrodes probability for the deficiency that solves above-mentioned technology.

In order to achieve the above object, the rotor that the present invention designed, it mainly comprises iron core and permanent magnet; Iron core and outer iron core in iron core comprises, interior iron core and outer iron core are circulus, are provided with axis hole in interior core center; Evenly be provided with four projections in interior iron core periphery, iron core was outside in outer iron core was set in, with interior iron core on the projection correspondence position be provided with four projections; There is the gap between the projection of interior iron core and the projection of outer iron core; Evenly be provided with eight permanent magnets in the outer iron core periphery, interior iron core, outer iron core and permanent magnet three fix through plastic shaping, and plastic overmold is in three's outer surface and both ends of the surface.

The resulting rotor of the present invention, it is through the setting of interior iron core and outer iron core, and has the gap between the two, can effectively reduce motor bearings internal discharge corrosion probability, the serviceability and the useful life of improving motor.Utilize plastics plastic packaging permanent magnet, interior iron core and outer iron core simultaneously, be connected firmly, good fixing effect has insulation effect simultaneously.In addition, the interior iron core outside is provided with corresponding projection with the outer iron core inboard, can improve between the two the connectivity robustness with plastics, raising useful life.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Embodiment

Combine accompanying drawing that the present invention is done further description through embodiment below.

Embodiment 1:

Rotor as shown in Figure 1, that present embodiment is described, it mainly comprises iron core and permanent magnet 5; Iron core 1 and outer iron core 2 in iron core comprises, interior iron core 1 is circulus with outer iron core 2, is provided with axis hole 3 at interior iron core 1 center; Evenly be provided with four projections 4 in interior iron core 1 periphery, outer iron core 2 is set in interior iron core 1 outside, with interior iron core 1 on projection 4 correspondence positions be provided with four projections 4; There is the gap between the projection 4 of interior iron core 1 and the projection 4 of outer iron core 2; Evenly be provided with eight permanent magnets 5 in outer iron core 2 peripheries, interior iron core 1, outer iron core 2 and permanent magnet 5 threes fix through plastics 6 moulding, and plastics 6 are coated on three's outer surface and both ends of the surface.

Claims

1. rotor, it mainly comprises iron core and permanent magnet, it is characterized in that iron core comprise in iron core and outer iron core; Interior iron core and outer iron core are circulus, are provided with axis hole in interior core center, evenly are provided with four projections in interior iron core periphery; Iron core was outside in outer iron core was set in; With interior iron core on the projection correspondence position be provided with four projections, have the gap between the projection of interior iron core and the projection of outer iron core, evenly be provided with eight permanent magnets in the outer iron core periphery; Interior iron core, outer iron core and permanent magnet three fix through plastic shaping, and plastic overmold is in three's outer surface and both ends of the surface.