CN2269666Y

CN2269666Y - Permanent magnetic dc motor

Info

Publication number: CN2269666Y
Application number: CN 96216387
Authority: CN
Inventors: 武守仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-28
Filing date: 1996-06-28
Publication date: 1997-12-03
Anticipated expiration: 2006-06-28

Abstract

The utility model relates to a permanent magnetic DC motor. The out of the stator rotary shaft of the utility model is provided with a magnetism conducting cylinder. The magnetism conducting cylinder is provided with n pairs of permanent poles, and the n can be equal to 2, 3, 4, etc. N poles and S poles are arrayed alternately. A rotor iron core is provided with a plurality of slots and loop windings to form N pairs of corresponding electric poles. The two ends of every windings are respectively connected with two brush sheets. Two groups of electric brushes are connected with a stator and are respectively connected with a power supply wire. The utility model has the characteristics of difficult motor burning, simple structure, low temperature rise, material saving, and energy saving. The out of the utility model is the rotor. The utility model can be used for electric automobiles, motorcycles, bicycles, and electric locomotives.

Description

Permanent magnet direct current motor

The utility model includes the DC motor technical field of permanent magnet.

Existing DC motor is general mainly to be made of outside stator and inner rotator and DC commutator, establishes excitation winding on the stator, establishes armature winding on the rotor.Its complex structure, power consumption is big, the coil easy burn-out.In the dc micro-motor, the magnetic pole of also useful permanent magnet work outside stator, this power of motor is less, and efficient is imitated low, and the scope of application is restricted.

The purpose of this utility model provides a kind of permanent magnet direct current motor, and it has efficient height, energy-conservation, the characteristics of easy burn-out not, especially is suitable for the special purpose occasion.

The utility model is achieved in that a kind of permanent magnet direct current motor, comprise permanent magnet poles and DC commutator, the outside that it is characterized in that the internal stator rotating shaft is provided with magnetic conduction garden tube, the fixed outside of magnetic conduction garden tube has n to permanent magnet poles, n=2,3,4 ... the magnetic pole N of outside, S is arranged alternately: the rotor of outside the inside is provided with the iron core of with groove, establishes coil windings on the groove, form on the rotor n to the n of permanent magnet poles correspondence to electromagnetic pole, the two ends of each winding link to each other with two corresponding brush sheets on the DC commutator respectively by two leads, what link to each other with stator has 2 groups of brushes, and every group of brush links to each other by the lead homopolarity, and links to each other with a power line.

Above-mentioned power line can be derived along stator, and preferably the stator rotating shaft is a hollow shaft, and power line is drawn from hollow shaft.

The groove number of above-mentioned rotor can be m * n, m=2,3,4 ...

Above-mentioned magnetic conduction garden tube can be cast steel or cast iron materials.Rotor core can be made up of silicon steel sheet.

Direct current transducer can be located on the axle, is made of carbon brush and spring leaf, and is simple in structure durable for making, and preferably a plurality of brush sheets of rotor are fixed in garden on the rotor insulation material end face on week, and the stator brush is fixed on the garden of stator insulation material end face on week.The sliding contact of stator brush and rotor brush sheet, one can be spring leaf, and one can be structure such as carbon brush.

Every group of brush on the said stator comprises the brush that 2 (containing 2) are above, as 4,6,8 etc.To improve power of electric motor.

The utlity model has simple in structure, durable, life-span long, be difficult for burning advantages such as coil, efficient height, energy-conservation, wide accommodation, be particularly useful for some special purpose occasions, as on electric automobile, battery-operated motor cycle, electric bicycle, electric motor vehicle, being used widely.

Be described in further detail below in conjunction with embodiment, but not as to qualification of the present utility model.

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

Fig. 2 is the commutator structure schematic diagram.

Among Fig. 1, Fig. 2,1 is the rotor core of with groove, and 2 is permanent magnet, and 3 is cast iron magnetic conduction garden tube, and 4 is plastic sheath, and 5 is stator axis.A plurality of slide plates 6 are fixed on the insulating material of rotor end-face, and 7,8 are respectively 2 groups of stator brushes, connect positive pole, the negative pole of lead respectively, and rotor rotates around stator axis by bearing.Whole winding can be with one or two lead coilings, and each winding (being that adjacent two grooves are a winding) two ends pick out two leads, receive on 2 corresponding brush sheets.

Claims

1, a kind of permanent magnet direct current motor comprises permanent magnet poles and DC commutator, it is characterized in that the outside of internal stator rotating shaft is provided with magnetic conduction garden tube, the fixed outside of magnetic conduction garden tube has n to permanent magnet poles, n=2,3,4 ..., magnetic pole N, the S of outside are arranged alternately; The rotor the inside of outside is provided with the iron core of with groove, establish coil windings in the groove, the n of formation and permanent magnet poles correspondence is to electromagnetic pole on the rotor, the two ends of each winding link to each other with two corresponding brush sheets on the DC commutator respectively by lead, what link to each other with stator has 2 groups of brushes, every group of brush links to each other by the lead homopolarity, and links to each other with a power line.

2, permanent magnet direct current motor according to claim 1 is characterized in that the stator rotating shaft is a hollow shaft, and power line is drawn from hollow shaft.

3, permanent magnet direct current motor according to claim 1 is characterized in that described epitrochanterian groove number is m * n, m=2,3,4 ...

4, permanent magnet direct current motor according to claim 1 is characterized in that the magnetic conduction garden tube of stator is cast steel or cast iron materials.

5, permanent magnet direct current motor according to claim 1 is characterized in that rotor core is made up of silicon steel sheet.

6, permanent magnet direct current motor according to claim 1 is characterized in that rotor brush sheet is fixed in garden on the rotor insulation material end face on week, and the stator brush is fixed on the garden of stator insulation material end face on week.

7,, it is characterized in that every group of brush on the stator comprises the brush more than 2 according to claim 1,2,3,4,5 or 6 described permanent magnet direct current motors.