CN2783617Y - Premanent magnet dc motor - Google Patents

Abstract

The utility model relates to a novel permanent magnet DC motor, which belongs to the technical field of a permanent magnet DC motor. The utility model comprises stators, a rotor, a rotating shaft for installing the rotor and a motor shell, wherein the stator is composed of stator permanent magnets and an electric coil which is coiled on the stator permanent magnet according to a certain direction, the positions of the two stators are opposite and the directions of magnetic poles of the two stator permanent magnets are reverse. The rotor is formed by fixing two rotor permanent magnets together, magnetic poles of the two rotor permanent magnets are opposite and a contact switch is arranged between the rotor and the inner wall of the shell and is connected with the electric coil which is arranged on the stator. The contact switch is composed of copper sheets and elastic metal contacts, wherein the copper sheets are arranged on the rotor and the elastic metal contacts are arranged on the inner wall of the shell. The utility model uses the electric coil which is arranged on the stator to switch on or switch off power, the magnetic poles of the stators can generate variation, and consequently, the rotor can continuously rotate along the same direction. The utility model has the advantages of ideal power saving effect, simple structure and convenient operation.

Description

A kind of novel permanent magnetic direct current machine

Affiliated field

The utility model relates to a kind of direct current machine, specifically is a kind of energy-efficient novel permanent magnetic direct current machine.

Background technology

Permanent magnet DC motor advantages such as convenient and noise is low owing to simple in structure, cheap, speed governing are widely used.Existing permanent magnet DC motor is by magnet steel, rotor, commutator, casing and be installed in front end housing on the casing, rear end cap with carbon brush structure constitutes, its operation principle is: when coil electricity, its effective edge is in a utmost point of magnet steel, the N utmost point for example, this effective edge will be subjected to the effect of an electromagnetic force this moment, under the effect of this electromagnetic force, rotor will produce rotation, when rotor rotates to another utmost point that this effective edge is in magnet steel, when being the S utmost point, because the effect of cooperatively interacting between the commutator of motion and the static carbon brush, the flow through current opposite in direction of this effective edge, make the electromagnetic force that act on this effective edge on keep identical direction because the direction in magnetic field is also just in time opposite this moment, and rotor continues rotation, when this effective edge rotates to the next N utmost point, the electric current of this effective edge of flowing through is commutated once more, and the direction that acts on electromagnetic force on this effective edge and electromagnetic torque like this remains constant, and motor is rotated continuously.Keep motor to rotate continuously, except that electric current commutation needed outage, all the other courses of work must continue energising, and power consumption is big, and promptly to forward the transfer ratio of mechanical energy to low for electric energy.

Summary of the invention

For overcoming the defective that above-mentioned prior art exists, the purpose of this utility model provides a kind of energy-efficient Novel DC magneto.

The technical solution of the utility model is: a kind of novel permanent magnetic direct current machine, it comprises the rotating shaft and the electric machine casing of stator, rotor, installation rotor, it is characterized in that: described stator is formed by stator permanent magnet and by the electric coil that certain orientation is wrapped on the stator permanent magnet, two position of stator are relative, and the pole orientation of two stator permanent magnets is opposite; Rotor is fixed together by two relative rotor permanent magnets of magnetic pole and forms, and is provided with contact switch between rotor and the inner walls, and contact switch connects the electric coil on the stator.Described contact switch is made up of the elastic metal contacts that is arranged on epitrochanterian copper sheet and the inner walls.

As a kind of further technical scheme: described rotor is a tubular, and stator is arranged in the centre of rotor hole.

Its operation principle is as follows: under the general state, the magnetic pole of rotor is the N utmost point for example, owing to be subjected to the attraction of the stator permanent magnet S utmost point, is in the equilbrium position.When motor is started working, give the coil electricity on two stator permanent magnets, produce an electromagnetic field, the magnetic pole of this electromagnetic field is opposite with the pole orientation of stator permanent magnet, the magnetic field intensity that the intensity of this electromagnetic field produces much larger than stator permanent magnet, the N utmost point of rotor permanent magnet was repelled by become by attraction, and another magnetic pole S of electromagnetic field extremely to the attraction of the N utmost point of rotor greater than repulsive force, so rotor is around rotational, when rotor rotation arrives another magnetic pole S utmost point of close stator, the hot-wire coil outage of stator, stator returns to original magnetic pole, at this moment, the N utmost point of rotor is repelled again, and the N utmost point of the rotor other end is subjected to the attraction of another stator S utmost point, is rotated further thereby promote rotor, and the inertia of rotor is also played a role, so repeatedly, just realized the continuous rotary work of motor, and conduction time is very short, thereby has saved electricity consumption.

The beneficial effects of the utility model are: this permanent magnet DC motor power savings ideal, and high efficiency, and easily produce, easy to use, be suitable for promoting.

Description of drawings

Fig. 1 is a structural representation of the present utility model,

Fig. 2 is the relative position schematic diagram of stator before the electric motor starting, rotor,

The relative position schematic diagram of stator, rotor when Fig. 3 cuts off the power supply for contact switch,

Among the figure: two, 5 rotating shafts of 1 stator permanent magnet, one, 2 electric coil, one, 3 stator permanent magnet, two, 4 electric coils, 6 rotor permanent magnets, one, 7 rotor permanent magnet, two, 8 copper sheets, 9 hard contacts, 10 housings, 11 front end housings, 12 rear end caps.

Embodiment

As shown in Figure 1, this novel permanent magnetic direct current machine, it comprises the rotating shaft 5 of stator, rotor, installation rotor and electric machine casing 10, front end housing 11, rear end cap 12.The two ends of rotating shaft 5 respectively by Bearing Installation on front and rear cover 11,12.Described stator is wrapped in electric coil 1 on the stator permanent magnet 1 by stator permanent magnet 1 and by certain orientation, and stator permanent magnet 23 and electric coil 24 are formed, and electric coil 2,4 all twines along non-magnetic pole strength.Two position of stator are relative, and the pole orientation of two stator permanent magnets 1,3 is opposite.Rotor is fixed together and is formed by magnetic pole relative two bar shaped rotor permanent magnets 1, rotor permanent magnet 27, is provided with contact switch between rotor and housing 11 inwalls, and contact switch connects the electric coil 2,4 on the stator.Described contact switch is formed with the elastic metal contacts 9 on housing 11 inwalls by being arranged on epitrochanterian copper sheet 8, and hard contact is installed a spring 9 times, can guarantee that hard contact 9 ejections contact desirable with epitrochanterian copper sheet 8.

Its operation principle is as follows: as shown in Figure 2, under the general state, the magnetic pole N utmost point of rotor owing to be subjected to the attraction of the stator permanent magnet one 1S utmost point, is in the equilbrium position.When motor is started working, give the electric coil on two stator permanent magnets 1,32,4 energisings, electric coil 2,4 all produces an electromagnetic field, the magnetic pole of this electromagnetic field is opposite with the pole orientation of stator permanent magnet 1,3, the magnetic field intensity that the intensity of this electromagnetic field produces much larger than stator permanent magnet, this moment, the magnetic pole N utmost point of stator became the S utmost point, and the S utmost point becomes the N utmost point; So the N utmost point of rotor permanent magnet is attracted to become repelled by the N utmost point by the S utmost point that was subjected to stator originally, and the other end S of electromagnetic field extremely attracts the N utmost point of rotor permanent magnet, and its attraction is greater than the repulsive force of the N utmost point, so rotor rotates counterclockwise around axis, promptly the N utmost point of rotor rotates to the S of the electromagnetic field utmost point; As shown in Figure 3, when rotor rotation arrives the S utmost point of close stator, hot-wire coil 2,4 outages of stator, stator returns to original magnetic pole, at this moment, the N utmost point of rotor is repelled again, and the N utmost point of the rotor other end is subjected to the attraction of another stator S utmost point, thereby promoting rotor is rotated further, and the inertia of rotor also can play a role, and so repeatedly, just realized the continuous rotary work of motor, and conduction time is very short, thereby has saved electricity consumption.

As another kind of execution mode: rotor can be made cylindric, and stator is arranged in the cylinder, also can reach above-mentioned result of use.

Claims (2)

1, a kind of novel permanent magnetic direct current machine, it comprises the rotating shaft of stator, rotor, installation rotor and electric machine casing, front end housing, rear end cap; It is characterized in that: described stator is formed by stator permanent magnet and by the electric coil that certain orientation is wrapped on the stator permanent magnet, and two position of stator are relative, and the pole orientation of two stator permanent magnets is opposite; Rotor is fixed together by two relative rotor permanent magnets of magnetic pole and forms, and is provided with contact switch between rotor and the inner walls, and contact switch connects the electric coil on the stator; Described contact switch is made up of the elastic metal contacts that is arranged on epitrochanterian copper sheet and the inner walls.

2, a kind of novel permanent magnetic direct current machine according to claim 1, it is characterized in that: described rotor is a tubular, and stator is arranged in the centre of rotor hole.

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