CN2838138Y

CN2838138Y - DC motor

Info

Publication number: CN2838138Y
Application number: CN 200520030156
Authority: CN
Inventors: 浮国正
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-08
Filing date: 2005-03-08
Publication date: 2006-11-15
Anticipated expiration: 2015-03-08

Abstract

The utility model relates to a DC motor which mainly comprises an armature and magnetic poles, wherein an armature winding is fixed on an armature iron core, the armature winding and the corresponding armature winding are acted to generate a magnetic pole magnetic field of harmful electromagnetic force, the armature winding and the corresponding armature winding are isolated by a permanent magnet reversed magnetic field which is arranged on the armature iron core, and a magnetic pole magnetic field which can not be isolated is acted with the armature winding to realize the reciprocal transformation of DC power energy and mechanical energy. The novel DC motor omits a commutator, an electronic commutating system and a rotor position detecting system of the traditional DC motor. The utility model has the advantages of processing simplification, compact structure, cost reduction and strong speed regulation ability. Noise, electromagnetic interference, iron loss and torque ripple which are caused by the conversion of each phase winding can be avoided. The full utilization of the winding make the DC motor operate in high voltage for generating power, and the volume and the weight of the motor can be reduced. The utility model also has the advantages of high efficiency, environmental protection and low cost, and is favorable for the wide application in more fields, such as an industrial automation field, a high speed driving field, an electric vehicle field, an electrical tool field, a household appliance field, an information product field, etc.

Description

Direct current machine

Technical field: the utility model belongs to technical field of motors, relates in particular to a kind of direct current machine.

Background technology: direct current machine is from there being brush to develop rapidly to brushless, put magnet steel of a specified duration on the existing brushless DC motor rotor, put polyphase windings on the stator, armature winding is received on the DC power supply via driver, with the electronic commutation replacement commutator and the brush of brushing direct current machine arranged according to the rotor position detection signal, each phase of armature is switched on one by one and the main flux interaction of rotor magnetic pole produces torque.This kind motor has superior functions such as volume is little, in light weight, easy-regulating, starting is fast, precision is high, high efficient and reliable, is commonly used for high-performance buncher and servomotor in recent years.

At present, cost ratio at the electronic system of industrially developed country's brshless DC motor and motor itself is about 1: 1, domestic higher, complicated electronic system needs higher manufacture craft, especially sinusoidal wave dc brushless motor technology is difficult to be grasped, heterogeneously be unfavorable for that around phase structure direct current machine develops to high voltage, each phase winding energising one by one can cause certain torque ripple, electromagnetic noise and electromagnetic interference, tradition has the brush direct current machine to safeguard inconvenience, commutator is easy to wear, and existing these weak points of direct current machine have much room for improvement.

Summary of the invention: at problems of the prior art, the object of the invention is to provide a kind of direct current machine, to reduce cost, simplify technology, reduce volume weight, can avoid the generation of electromagnetic interference, electromagnetic noise and torque ripple, but make the operation of direct current machine high voltage.

For achieving the above object, the technical solution of the utility model is to adopt a kind of direct current machine, mainly comprise armature and magnetic pole, armature winding places in the wire casing of armature core surface, with the wire casing inside conductor around to identical, different wire casing inside conductors just have around to back-roll to, just fixing by the permanent magnetism sheet of motor pole N correspondence around guiding line, its magnetic sheet is relative with motor pole N position of magnetic pole of the same name, the back-roll guiding line of motor pole S correspondence is fixed by the permanent magnetism sheet, its magnetic sheet is relative with motor pole S position of magnetic pole of the same name, keeps air gap between motor pole and armature.

Described armature winding and provide the permanent magnet of opposing magnetic field to be fixed in the armature core hole.

Described armature winding and provide the permanent magnet of opposing magnetic field to be fixed in the armature core wire casing by the high resistance thin cylinder.

Additional high resistivity soft magnetic bodies is to reduce iron loss in the described armature core.

The described permanent magnet that the opposing magnetic field is provided dorsad the additional non-magnet material of winding one side to reduce its suffered demagnetizing effect.

Described magnetic pole is made of the cylindrical permanent-magnet body, has same radial magnetic field with the circumference magnetic pole.

Described magnetic pole is a circular arc, and magnetic pole has radial magnetic field.

Described magnetic pole is plate shaped, and its magnetic is to perpendicular to this platen surface.

Its rotating armature of described direct current machine is communicated with external circuit by slip ring.

Described direct current machine is by pressure regulation or adjustable magnetic or change the existing speed governing of current-carrying winding length.

Described direct current machine is realized counter-rotating to change the sense of current.

Because the utility model adopts local isolated magnetic Circuit Design, need not to be provided with commutator, rotor position detection system and electronic commutation system, therefore work simplification, materials reduce, cost reduces, durable highly efficient, and the characteristics of exempting to commutate make the DC motor speed-regulating ability stronger, noise, electromagnetic interference and torque ripple that each phase winding change of current causes can be avoided, and the series connection winding helps the operation of direct current machine high voltage.This product is a direct current machine completely, and generating is strengthened the degaussing armature reaction and can be made the bigger DC generator generation of rotation speed change than burning voltage with reducing motor volume weight.

Description of drawings:

Fig. 1 and Fig. 2 are the structural representation of a kind of execution mode of the present utility model.

Fig. 3 is the fundamental diagram of Fig. 1 and Fig. 2.

Fig. 4 and Fig. 5 are the structural representation of another kind of execution mode of the present utility model.

Embodiment: embodiment as depicted in figs. 1 and 2, winding 1 each section of coiling in the same way among this embodiment rolled over successively in armature core 2 interior cinclides, armature core is made up of silicon steel sheet, the high resistivity soft magnetic bodies places the winding outside, clamp-on armature winding in the outside with the isometric permanent magnetism sheet 4 and the interlaced arrangement of diskette 5 of core inductance all around, along with the adjacent permanent magnet piece magnetic of circumferential arrangement to identical, the adjacent permanent magnet piece magnetic of Pai Lieing is on the contrary vertically, the corresponding permanent magnetism sheet in the outside has same radial magnetic field in the winding, be fixed with on the rotating shaft iron core 7 to opposite pipe magnetic separator 6 with permanent magnetism sheet magnetic, rotating shaft 8 is assemblied on the end cap 9 by bearing.

In the present embodiment: winding and provide the permanent magnetism sheet of opposing magnetic field to be fixed in the armature core wire casing by the high resistance thin cylinder, pipe magnetic separator also can be replaced by several circular arc permanent magnets of disc silicon steel sheet outer perimeter holes internal fixation.

The operation principle of present embodiment as shown in Figure 3, permanent magnetism magnetic pole 1, air-gap 2, silicon steel sheet 3, winding 4, high resistivity soft magnetic bodies 5 and rotating shaft unshakable in one's determination 6 constitutes magnetic circuit, pipe magnetic separator 7 magnetic fields that will produce harmful electromagnetic force with corresponding armature winding effect are isolated itself and corresponding winding by the permanent magnetism sheet opposing magnetic field in the armature core hole, and the Ampere force of not isolating between magnetic field and the current-carrying winding of pipe magnetic separator produces required torque.

Another kind of execution mode: embodiment as shown in Figure 4 and Figure 5, the armature winding 1 of coiling is successively placed in armature core 2 outer perimeter holes in the same way, armature core is made of the permanent magnetic strip 3 that the opposing magnetic field is provided and is fixed on the need isolated windings outside by non-magnetic conduction bar 4 silicon steel sheet, high resistivity soft magnetic stripe 5 places needs the isolated windings inboard, permanent magnetic strip and mutually insulated unshakable in one's determination, the permanent magnet 6 that has with radial magnetic field places the casing inside groove, and casing 7 is assemblied in by end cap 8.

The operation principle of present embodiment is identical with preceding embodiment.

Claims

1, a kind of direct current machine, mainly comprise armature and magnetic pole, it is characterized in that: armature winding places in the wire casing of armature core surface, with the wire casing inside conductor around to identical, different wire casing inside conductors just have around to back-roll to, just fixing by the permanent magnetism sheet of motor pole N correspondence around guiding line, its magnetic sheet is relative with motor pole N position of magnetic pole of the same name, the back-roll guiding line of motor pole S correspondence is fixed by the permanent magnetism sheet, its magnetic sheet is relative with motor pole S position of magnetic pole of the same name, keeps air gap between motor pole and armature.

2, direct current machine according to claim 1 is characterized in that: described armature winding and provide the permanent magnet of opposing magnetic field to be fixed in the armature core hole.

3, direct current machine according to claim 1 is characterized in that: described armature winding and provide the permanent magnet of opposing magnetic field to be fixed in the armature core wire casing by the high resistivity thin wall cylinder.

4, direct current machine according to claim 1 is characterized in that: additional high resistivity soft magnetic bodies is to reduce iron loss in the described armature core.

5, direct current machine according to claim 1 is characterized in that: the described permanent magnet that the opposing magnetic field is provided dorsad the additional non-magnet material of winding one side to reduce its suffered demagnetizing effect.

6, direct current machine according to claim 1 is characterized in that: described magnetic pole is made of the cylindrical permanent-magnet body, has same radial magnetic field with the circumference magnetic pole.

7, direct current machine according to claim 1 is characterized in that, described magnetic pole is a circular arc, and magnetic pole has radial magnetic field.

8, direct current machine according to claim 1 is characterized in that: described magnetic pole is plate shaped, and its magnetic is to perpendicular to this platen surface.