CN201048338Y

CN201048338Y - Series excited motor

Info

Publication number: CN201048338Y
Application number: CNU2007201105665U
Authority: CN
Inventors: 姚鹏祯; 三原正光
Original assignee: Panasonic Home Appliances Hangzhou Co Ltd
Current assignee: Panasonic Home Appliances R&D Center Hangzou Co Ltd
Priority date: 2007-06-14
Filing date: 2007-06-14
Publication date: 2008-04-16
Anticipated expiration: 2017-06-14

Abstract

The utility model relates to an electric motor, in particular to a series machine used for a tumbling-box washing machine which consists of a front-end cover and a back-end cover arranged on both ends of the electric motor, a rotor component and a stator component positioned in the center of the electric motor. The rotor component consists of a rotor shaft and a commutator. A carbon brush is arranged outside the commutator, the carbon brush is fixed on the end cover through a carbon brush rack, and an insulating layer is arranged between the carbon brush and the end cover. The utility model mainly provides a series machine, which can prevent the phenomenon of insulating deterioration from happening effectively, alleviates the noises caused by the friction between the ring collector and the carbon brush, and has a long service life, and solves the problem in the prior art that the series machine is prone to insulating deterioration.

Description

Series excited machine

Technical field

The utility model relates to a kind of motor, relates in particular to a kind of series excited machine that is used on the roller washing machine.

Background technology

The existing series excited machine that is used for roller washing machine, comprise front end housing, rear end cap, rotor assembly, stator module and bearing, stator module comprises iron core and coil windings, iron core is detained riveting mutually by some stator punchings and is overrided to form, rotor assembly is made up of some rotor punchings, armature spindle, commutator and armature solderless wrapped connection, and rotor assembly is assembled together by bearing and end cap and stator module.As Chinese patent: " a kind of series excited machine (CN200620056766.2) that is used for roller washing machine ".But all there is an identical problem in this series excited machine, that is exactly because the rotation of rotor, friction between carbon brush and the commutator can produce carbon dust, carbon dust not only can be attached to the surface of carbon brush holder, and can spread to the aluminum end cover surface, between carbon brush and aluminum end cap, form path, thereby cause the generation of insulation degradation, and in use there is the danger of electric shock in the motor of insulation degradation.

Summary of the invention

The utility model mainly provides and can prevent effectively that the insulation degradation phenomenon from producing, and alleviates by commutator and the fricative noise of carbon brush the series excited machine that the life-span is long; Solve the existing in prior technology series excited machine insulation degradation phenomenon takes place easily.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of series excited machine, the front end housing and the rear end cap that comprise the motor two ends, be positioned at the rotor assembly and the stator module of motor center, described rotor assembly comprises armature spindle and commutator, commutator is provided with carbon brush outward, carbon brush is fixed on the end cap by carbon brush holder, is provided with insulating barrier between carbon brush and the end cap.Between carbon brush and end cap, insulating barrier is set, when carbon brush and commutator friction, can prevents that the carbon dust that comes off from spreading to the aluminum end cover surface, cause forming path between carbon brush and aluminum end cap, thereby cause the generation of insulation degradation.So also just prevented from the danger of electric shock takes place, and alleviated commutator and the fricative noise of carbon brush.

As preferably, described insulating barrier is a sheet insulating paper shape, and insulating barrier is installed the carbon brush place by screw on end cap.Insulating barrier mainly is for isolated carbon dust drops on the end cap, therefore only needs insulating barrier is fixed on the bearing of carbon brush.Insulating barrier is an insulating paper, and cost is low, and the integral installation structure of series excited machine is not influenced.

As preferably, described insulating barrier is provided with location hole and fixing hole.Location hole on the insulating barrier overlaps with location hole on the carbon brush component, makes things convenient for the location of carbon brush component and insulating barrier; Fixing hole overlaps with fixing hole on the carbon brush component, makes things convenient for carbon brush component to be fixed on the electric motor end cap.

As preferably, described insulating barrier is folding individual layer annular sleeve-like structure, is wrapped on the carbon brush fixed end caps.Insulating paper as insulating barrier can fold, and the insulating paper after folding forms insulation between carbon brush and commutator, and the folding back of individual layer insulating paper forms a cover, will wrap with the end cap of carbon brush contact position, has strengthened insulation effect.

Therefore, because the utility model is provided with insulating paper between carbon brush and end cap, prevented that the fricative carbon dust of carbon brush and steering gear from spreading to the aluminum end cover surface, cause insulation degradation, thereby avoided the danger of getting an electric shock owing to insulation degradation, simultaneously, also alleviate the fricative noise of commutator and carbon brush, increased the useful life of motor.

Description of drawings:

Fig. 1 is a kind of series excited machine overall schematic of the present utility model;

Fig. 2 is the schematic diagram that the left view among Fig. 1 unloads next carbon brush;

Fig. 3 is the schematic diagram that the left view among Fig. 1 is not installed carbon brush and insulating paper;

Fig. 4 is the expanded view of the insulating paper among Fig. 1;

Fig. 5 is a schematic diagram.

Embodiment:

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1:

Shown in attached Fig. 1 and 2 and 4, a kind of series excited machine comprises the front end housing 1 and the rear end cap 2 of motor both sides, is positioned at the rotor assembly and the stator module 6 of motor center.Rotor assembly comprises armature spindle 3 and the commutator 4 that is positioned at motor center, and commutator 4 is positioned at an end of armature spindle 3, near rear end cap 2 places.Excircle at commutator 4 is evenly equipped with two carbon brush 5, and carbon brush 5 is fixed on the rear end cap 2 of motor by carbon brush holder 7.On the end cap face of the bearing of carbon brush 5, be provided with insulating paper 8, as shown in Figure 3, insulating paper 8 is according to the shaped design of end face, design has folding line on insulating paper 8, insulating paper 8 forms the annular sleeve-like structure of individual layer according to the folding back of folding line, by the location hole 8-1 on the insulating paper 8, be fixed on the stationary plane of rear end cap 2 and carbon brush 5, the location hole on the location hole 8-1 on the insulating paper 8 and the carbon brush holder 7, the location hole 2-1 on the rear end cap 2 overlap.On insulating paper 8, also be provided with two fixing hole 8-2, fixing hole on fixing hole 8-2 and the carbon brush holder 7, the fixing hole 2-2 on the rear end cap 2 overlap, when carbon brush holder 7 is installed on the rear end cap 2, screw passes the fixing hole of carbon brush holder 7, and the fixing hole 8-2 that passes again on the insulating paper 8 is fixed on carbon brush 5 on the end cap.Insulating paper 8 is positioned at carbon brush 5 belows, end cap and carbon brush joint is wrapped up, thereby will insulate between carbon brush 5 and end cap, uses the fricative carbon dust of carbon brush only can drop on the insulating paper repeatedly, can not spread on the end cap, as shown in Figure 5.

Specific embodiment described herein only is that design of the present utility model is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. series excited machine, the front end housing and the rear end cap that comprise the motor two ends, be positioned at the rotor assembly and the stator module of motor center, described rotor assembly comprises armature spindle and commutator, commutator is provided with carbon brush outward, carbon brush is fixed on the end cap by carbon brush holder, it is characterized in that: be provided with insulating barrier between carbon brush and the end cap.

2. series excited machine according to claim 1 is characterized in that: described insulating barrier is a sheet insulating paper shape, and insulating barrier is installed the carbon brush place by screw on end cap.

3. according to any described series excited machine in claim 1 and 2, it is characterized in that: described insulating barrier is provided with location hole and fixing hole.

4. according to any described series excited machine in claim 1 and 2, it is characterized in that: described insulating barrier is folding individual layer annular sleeve-like structure, is wrapped on the carbon brush fixed end caps.