CN2179660Y - Brushless rare-earth mixed permanent-magnet general and braking motor - Google Patents

Abstract

The utility model relates to a general and brake motor without a brush and with a rare earth mixing permanent magnet, which is composed of a winding stator with trough lines or a winding rotor with trough lines, a Hall element, a power transistor, connecting lines, a control board and a shaft (1), an end cover (2), a body case (3) and a bearing (8). The stator or the rotor, which is over the annular monopole, is sequentially formed by the earth mixing permanent magnet, a magnetic conductor, an anti-magnetic isolation sheet and anti-magnetic materials. The utility model can be directly used for single-phase AC power supply and single-phase DC power supply; a plurality of different functions can be generated; the general and brake motor without a brush and with a rare earth mixing permanent magnet can not only be operated at constant speed, but also can conduct stepless speed regulation. The general and brake motor without a brush and with a rare earth mixing permanent magnet has the advantages of simple design, process and manufacture, convenient usage, no maintenance, low cost and multiple purposes.

Description

Brushless rare-earth mixed permanent-magnet general and braking motor

The utility model belongs to electrical engineering.

Present widely used various small-sized and micro ac motors, efficient is all low, and can not be as direct current machine that works arbitrarily control or regulate rotating speed, and some alternating current machine also can the stepping speed governing or by the speed governing of the SCR control angle of flow.But its inefficiency, the method complexity.Optional equipment is many, and therefore general alternating current machine has only a kind of rotating speed, can not change speed and electromagnetic torque as required, and direct current machine is than alternating current machine efficient height, and the motor that produces various rotating speeds easily comes.Present general direct current machine need commutator and brushgear to work, and this device is the weak link of direct current machine always, causes the machinery and the apparatus failure of motor easily.

Though micro brushless dc motor has been eliminated commutator and brush, can as alternating current motor, rotate, the starting of motor and at the uniform velocity rotation need multiple elements such as the electronic circuit of complexity and a plurality of large power triodes to work, so this motor not only costliness but also complexity, reliability is also poor, can only be applicable to special occasions.

Development and production recent years the various performances of Nd-Fe-B permanent-magnet motor all relatively good, volume is little, and is in light weight, is well suited for various occasions, but price will exceed several times of the same specification motor, promotes the general employing of non-special part for this reason and all has any problem.

Under the requirement that motor need be braked, brake apparatus such as electromagnetism generally all are set, cause the machinery and the apparatus failure of motor easily.

The purpose of this utility model has provided a kind of structure and manufacturing process is simple, with low cost, multipurpose, high efficiency, adapts to multiple power supply, and can carry out the general and braking motor of brushless rare earth hybrid permanent-magnet of stepless speed regulation and braking.

Concrete solution of the present utility model is: stator that described annular one pole is above or rotor system are made of the order of native dimly hybrid permanent-magnet (neodymium iron boron, praseodymium neodymium iron boron, ferrite) (13,14) magnetic conductors (11), diamagnetism antifreeze plate (12), antimagnetic material (10), and it forms the general and external rotor general-purpose machine of rare earth hybrid permanent-magnet with axle (1), end cap (2), casing (3), bearing (8) and Hall element (5), pliotron (7), wiring control board (6); Damper brake is set, can forms braking of rare earth hybrid permanent-magnet and external rotor braking motor.

By annular stator or the rotor that the rare earth hybrid permanent-magnet is formed, be that field coil comes the required electric current of controlling magnetic field in the triode input winding.

The annular stator of forming the rare earth hybrid permanent-magnet by neodymium iron boron, praseodymium neodymium iron boron, ferrite, magnetic conductor, diamagnetism antifreeze plate and diamagnetic material, also can be rotor, stator yoke or rotor yoke that also available high resistance soft magnetic material and various powder metallurgy soft magnetic material are made.

Fig. 1 is a kind of agent structure schematic diagram of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Press Fig. 1 and Fig. 2, the control board that Hall element and Hall integrated circuit and external pliotron are set on rotor or stator joins, and link with the outlet of rotor or stator, make each field coil and power connection by socket again, directly control makes the alternately conveying of the field coil in the rotor winding of its energy cycle to the signal of being exported by the Hall element circuit to pliotron, sets up the required electric current of rotating magnetic field.

Brushless hybrid permanent-magnet is general to be comprised with manufacture method braking motor:

(1) hybrid permanent-magnet be made up of neodymium iron boron, praseodymium neodymium iron boron, ferrite, magnetic conductor of non-groove stator or rotor and diamagnetism antifreeze plate and diamagnetic material are formed the integral ring-shaped part as Fig. 2.

(2) rotor or stator are that winding structure posts on week in the garden by the output of corresponding Hall element of motor pole number and Hall integrated circuit pliotron corresponding with it control utmost point and links.

(3) brushless hybrid permanent-magnet pliotron general and that braking motor uses can use large power triode, VMOS field effect transistor, thyristor; Hall element, also available magneto sensor, Hall integrated circuit.

(4) the general and braking motor of brushless hybrid permanent-magnet, brake portion adopt steel disc, friction plate and drum barrel to form, the internal rotor band-type brake, and also available metal abrasive disc and interior unit ring are formed internal expanding lock braking motor.

Brushless hybrid permanent-magnet general and stator or rotor braking motor are that the slotless hybrid permanent-magnet cooperates with the rotor or the stator of wire-wound.Therefore its manufacturing process is greatly simplified.Design, the manufacturing cycle of motor are shortened, reduced mechanical commutator, brushgear, and used the hybrid permanent-magnet that is lower than neodymium iron boron price 1/3～2/5, so cost is lower.Hybrid permanent-magnet has desirable magnetic energy product, and high-coercive force is unified excitatory to the motor magnetic circuit, and motor performance index significantly improves, and this efficiency of motor can be the nearly twice of general load motor greater than more than 76%.

The utility model can be formed general-purpose machine and the braking motor more than 8 kinds: (1) single-phase AC motor.(2) the single phase alternating current (A.C.) brushless motor and the brake motor of rotating speed adjustable.(3) DC motor and brake motor.(4) direct current outer rotor motor and brake motor.(5) brushless DC motor and brake motor.(6) brushless external rotor DC motor and brake motor.(7) DC servo motor and other magnetoes.(8) all kinds of motor of submerged type 2-6 item.

Claims (2)

1, the general and braking motor of a kind of brushless rare earth hybrid permanent-magnet, form by axle (1), end cap (2), casing (3), bearing (8), stator, rotor and Hall element (5), pliotron (7) and wiring control board (6) thereof, it is characterized in that stator or rotor system that described annular veneer is above are made of native dimly hybrid permanent-magnet (13,14), magnetic conductor (11), diamagnetism antifreeze plate (12), antimagnetic material (10) order.

2, the general and braking motor of brushless rare earth hybrid permanent-magnet as claimed in claim 1 is characterized in that described axle (1) is provided with damper brake (9).