CN202260729U

CN202260729U - Rotor assembly of alternating-current brushless motor

Info

Publication number: CN202260729U
Application number: CN2011204072049U
Authority: CN
Inventors: 朱伯乐; 李锐; 蒙竞华; 黄高程
Original assignee: WENZHOU ZHONGSHENG TECHNOLOGY Co Ltd
Current assignee: WENZHOU ZHONGSHENG TECHNOLOGY Co Ltd
Priority date: 2011-10-24
Filing date: 2011-10-24
Publication date: 2012-05-30
Anticipated expiration: 2021-10-24

Abstract

The utility model relates to a motor, in particular to a rotor assembly of an alternating-current brushless motor. In the technical scheme, the rotor assembly of the alternating-current brushless motor comprises a rotating shaft and a covering body sleeved on the rotating shaft, and the covering body is uniformly provided with a plurality of heat radiating holes penetrating through the covering body. By adopting the technical scheme, the rotor assembly of the alternating-current brushless motor has good heat radiating effects and a simple heat radiating structure.

Description

The rotor assembly of AC brushless electric machine

Technical field

The utility model relates to a kind of motor, particularly a kind of rotor assembly of AC brushless electric machine.

Background technology

AC brushless electric machine is a kind of cage motor that does not have carbon brush; Replaced traditional brush motor; It has removed brush, and the most directly changing is exactly the electric spark that produces when not had the brush motor running, has so just greatly reduced the interference of electric spark to remote control radio equipment; And the noise in when operation is low, and it is smooth and easy to turn round.

But AC brushless electric machine is heating, particularly rotor assembly easily after long-time the use, and how it is dispelled the heat is the difficult problem that these those skilled in the art can't overcome always.

Summary of the invention

To the deficiency that prior art exists, the utility model provides the rotor assembly of a kind of good heat dissipation effect, the simple AC brushless electric machine of radiator structure.

For realizing above-mentioned purpose; The utility model provides following technical scheme: a kind of rotor assembly of AC brushless electric machine; Include rotating shaft and be sheathed on the cladding in the rotating shaft, it is characterized in that: be evenly equipped with some louvres that run through cladding on the described cladding.

Adopt technique scheme, offer louvre being used to discharge on the cladding of permanent magnet, the heat that produces in the time of can be with the rotating shaft high speed rotating looses fast and removes, and prevents that effectively the too high heat of motor accumulated from damaging inner vigour part or reduce its useful life.And it is easy to process to offer louvre, simple in structure.

The utility model further is set to: some louvres are opened on the axial end of cladding and around its periphery and are uniformly distributed with, and some louvres are through to another end face by the axial end face of cladding.

Wherein, offer two groups of louvres on the axial end of cladding at least, each organizes louvre interleaved setting respectively.

Adopt technique scheme, more convenient at the axial end of the cladding louvre that is arranged, and also radiating effect is more obvious.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is that the A of Fig. 1 is to sketch map.

Embodiment

Rotor assembly like Fig. 1, a kind of AC brushless electric machine shown in Figure 2 includes rotating shaft 1 and is sheathed on the cladding 2 in the rotating shaft 1, is evenly equipped with some louvres 21 that run through cladding 2 on the cladding 2.In the such scheme, offer louvre 21 being used to discharge on the cladding 2 of permanent magnet, the heat that produces in the time of can be with rotating shaft 1 high speed rotating looses fast and removes, and prevents that effectively the too high heat of motor accumulated from damaging inner vigour part or reduce its useful life.And it is easy to process to offer louvre 21, simple in structure.Need to prove that louvre 21 is uniformly distributed with and is provided with is because rotating shaft 1 need keep the degree of balance when rotated.If louvre 21 is arbitrarily offered, then can have influence on the rotation of rotating shaft 1 and the normal use of motor.

In the utility model embodiment, some louvres 21 are opened on the axial end 22 of cladding 2 and around its periphery and are uniformly distributed with, and some louvres 21 are through to another end face by the axial end face of cladding 2.In order to strengthen radiating effect, make the speed of heat radiation faster, offer two groups of louvres 21 on the axial end 22 of cladding 2 at least, each organizes louvre 21 interleaved setting respectively.Need to prove, if the space allows, three groups, four groups or five groups of louvres 21 can be set also, all is feasible.

Claims

1. the rotor assembly of an AC brushless electric machine includes rotating shaft and is sheathed on the cladding in the rotating shaft, it is characterized in that: be evenly equipped with some louvres that run through cladding on the described cladding.

2. the rotor assembly of AC brushless electric machine according to claim 1; It is characterized in that: described some louvres are opened on the axial end of cladding and around its periphery and are uniformly distributed with, and some louvres are through to another end face by the axial end face of cladding.

3. the rotor assembly of AC brushless electric machine according to claim 2 is characterized in that: offer two groups of louvres on the axial end of said cladding at least, each organizes louvre interleaved setting respectively.