CN202384869U

CN202384869U - Motor rotor

Info

Publication number: CN202384869U
Application number: CN2011205457903U
Authority: CN
Inventors: 朱春富; 朱人杰; 顾学明; 屈健伦; 费洪明; 王寿根; 高山风
Original assignee: Zhejiang Jeamo Motor Co Ltd
Current assignee: Beijing Motor Co., Ltd.
Priority date: 2011-12-23
Filing date: 2011-12-23
Publication date: 2012-08-15
Anticipated expiration: 2021-12-23

Abstract

The utility model discloses a motor rotor, which mainly comprises permanent magnets. Each of an inner core and an outer core has an annular structure. Four bumps are uniformly arranged on the periphery of the inner core. The outer core is sleeved outside the inner core. Four bumps are opposite to the bumps on the inner core. Gaps are formed between the bumps on the inner core and the bumps on the outer core. Eight permanent magnets are uniformly arranged on the periphery of the outer core. The inner core, the outer core and the permanent magnets are fixedly molded by plastics which covers the outer surface and the two end faces of each of the inner core, the outer core and the permanent magnets. According to the motor rotor, the inner and outer cores are arranged, and a gap is formed between the inner and outer cores, so that the probability of discharge corrosion in a motor bearing can be reduced, the operational performance of a motor can be improved, and the service life of the motor can be prolonged. In addition, the plastics is used for plastic packaging, so that the motor rotor is firm in connection, and has good fixing effects and insulating effects. Moreover, the bumps are oppositely arranged outside the inner core and on the inner side of the outer core, so that the firmness of connection between the inner and outer cores and the plastics can be improved, and the service life of the motor can be prolonged.

Description

Rotor

Technical field

The utility model 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.

The utility model content

The purpose of the utility model is that a kind of rotor that can effectively reduce motor bearings internal discharge corrosion probability is provided for the deficiency that solves above-mentioned technology.

In order to achieve the above object, the rotor that the utility model 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 utility model, 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 the structural representation of the utility model.

Embodiment

Combine accompanying drawing that the utility model is done further to describe 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.