CN2498787Y - Reciprocal oscillation brushless pulse motor - Google Patents

Abstract

Disclosed is a reciprocating swinging type brushless pulse motor, comprising a stator, a rotor, a winding and a reset spring. The stator is a pair of round and arc shaped permanent magnets with mutually different magnetic poles pointing to the center of the circle and which are fixed in the medial of the motor shell; the rotor is a soft magnetic material cylinder with a groove in the peripheral; a rotating shaft is arranged in the circle center of the rotor, and at least two magnetic poles are included in the peripheral of the iron core; grooves are arranged between magnetic poles of equal intervals for intertwining the rotor winding. The winding comprises the insulated conductor with the beginning and end in succession that successively intertwines densely each groove according to a certain direction; two ends of the wire are extracted from the place where the number of turns is appropriate; one end of the reset spring is fixed at the spring fixed seat of the rotor tail, and the other end is fixed at the tail or tailhood of the motor shell. With long duration, the reciprocating swinging type brushless pulse motor can be used in the structural design of traditional reciprocating swinging type products and no complex mechanical transformation system is needed, thereby realizing simplified structure, convenient assembling, low noise, and compact volume.

Description

Reciprocally swinging formula brushless pulse motor

Technical field

The utility model relates to motor, more particularly, relates to a kind of reciprocally swinging formula brushless pulse motor.

Background technology

Tradition brush motor complex structure not only have problems such as brush sparking, wearing and tearing, useful life be short, and volume is bigger, and noise is bigger.

Summary of the invention

The technical problems to be solved in the utility model is, a kind of simple in structure, noise is also little, improve useful life motor is provided, and adopts novel rotating manner, can simplify the structural design of some product.

Technical problem of the present utility model is to solve like this, construct a kind of reciprocally swinging formula brushless pulse motor, comprise stator, rotor core, winding and back-moving spring, described stator is a pair of magnetic pole inequality that is separately fixed at the motor housing inboard, magnetic pole points to the circular arc permanent magnet in the center of circle, the reeded cylinder of periphery that described rotor is made with soft magnetic material, be provided with rotating shaft in its center of circle, on periphery unshakable in one's determination, comprise at least 2 or 2 above magnetic poles, between the identical magnetic pole of described spacing, be set to around the groove of putting the rotor winding, described winding comprises by certain orientation successively around full each groove and end to end insulated conductor, two the end of a thread are drawn at the place in the suitable number of turn of winding, and be connected on two supply terminalss of motor tail-hood, described back-moving spring is the spring with torsion function, the one end is fixed on the spring fixed seat of rotor afterbody, and the other end is fixed on the afterbody or tail-hood of motor housing.

The reciprocally swinging formula brushless pulse motor that enforcement provides according to the utility model, compared with prior art, have following characteristics: long service life, owing to do not have the commutator and the brush structure of traditional DC motor, there is not the short problem in useful life that causes because of brush sparking, wearing and tearing etc.This motor is used for the structural design of traditional reciprocating product, does not need the complicated mechanical transformation system, thereby can accomplish designs simplification, easy to assembly, noise is low, and volume is little.

Description of drawings

Fig. 1 is the structural representation of the reciprocally swinging formula brushless pulse motor that provides of the utility model.

Fig. 2 is an A-A cross-sectional view among Fig. 1.

Embodiment

As depicted in figs. 1 and 2, aspect stator magnetic circuit, rotor coil, appearance structure and rotor starting principle, the utility model is more similar to cylindrical slotted-core armature permanent magnet direct current motor.Its structure is formed and comprised: permanent magnet stator 1 and 2, cylindrical grooved rotor iron core 3, rotor winding coil 4, rotating shaft 5, back-moving spring 6, back-moving spring holder 7, motor housing 8, motor tail-hood 9, power supply terminal 10 etc. are partly formed.Stator is a pair of circular-arc permanent magnet 1,2, is separately fixed at the inboard of motor housing 8, the pole polarity inequality of two magnets, and magnetic pole points to the center of circle.There is the inter-air space between stator and the rotor.Rotor is to adopt soft magnetic material to make reeded cylindrical core 3 is being fixed motor in the center of circle rotating shaft 5, on its periphery successively distributed quantity be respectively 2 magnetic pole and groove at least, be used in each groove around unwrapping wire circle 4, whole winding coil is around to unanimity, from beginning to end connecing, two the end of a thread are drawn at suitable number of turn place at winding, and are connected to power supply terminal 10, so that the input of external pulse power supply.Back-moving spring 7 has twisting force, and spring 7 one ends are fixed on the holder 6 of rotor afterbody, and the other end is fixed on the afterbody or tail-hood 9 of motor housing 8.Its course of work is summarized as follows: when feed voltage, frequency in the rotor winding, when the duty ratio size is the direct current pulse power source of certain value, during pulse high level, winding gets, because the effect of electromagnetic induction power between rotor and the stator, rotating shaft is started by static state, rotate an angle (its direction is by the decision of external voltage polarity), machine torque output is arranged on the axle, back-moving spring is subjected to torsion (being in the energy storage state) simultaneously; During pulses low, winding dead electricity, electromagnetic induction power disappear, and rotating shaft resets to initial state under the effect of spring force, and the direction of motion of rotating shaft is opposite during with starting, and so far, machine shaft is finished once reciprocal swing and exported.When the pulse power continues to add fashionable, will continue to realize the reciprocal output of machine torque on the axle.As an application example, common staight shank head toothbrushes can be fixed in the rotating shaft of the utility model motor, when motor fed direct current pulse power source, head toothbrushes can have the reciprocating motion of certain pendulum angle, realized the effect of electric tooth brushing.

Claims (1)

1, a kind of reciprocally swinging formula brushless pulse motor, it is characterized in that, comprise stator, rotor core, winding and back-moving spring, described stator is a pair of magnetic pole inequality that is separately fixed at the motor housing inboard, magnetic pole points to the circular arc permanent magnet in the center of circle, described rotor is the reeded cylinder of periphery that soft magnetic material is made, be provided with rotating shaft in its center of circle, on periphery unshakable in one's determination, comprise at least 2 magnetic poles, between the identical magnetic pole of described spacing, be set to around the groove of putting the rotor winding, described winding comprises by certain orientation successively around full each groove and end to end insulated conductor, two the end of a thread are drawn at the place in the suitable number of turn of winding, and be connected on two supply terminalss of motor tail-hood, described back-moving spring is the spring with torsion function, the one end is fixed on the spring fixed seat of rotor afterbody, and the other end is fixed on the afterbody or tail-hood of motor housing.

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