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Permanent-magnet brushless DC motor

A DC motor, permanent magnet brushless technology, applied in the field of motors, can solve problems such as insufficient performance, and achieve the effects of reducing the difficulty of assembly process, reducing costs, and improving magnetoelectric performance

Inactive Publication Date: 2009-01-28
范安成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the permanent magnet brushless DC motor in the prior art has imperfect performance whether it is a stator, a rotor or a position sensor.

Method used

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  • Permanent-magnet brushless DC motor

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Experimental program
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Effect test

Embodiment Construction

[0028] Please refer to Figure 1 together with figure 2 Shown is the permanent magnet brushless DC motor of the present invention, which includes a casing 1 , a front end cover 2 , a rear end cover 3 , a stator 4 , a rotor 5 and a position sensor 6 . The casing 1 is cylindrical. The stator 4 , the rotor 5 and the position sensor 6 are all disposed inside the casing 1 .

[0029] The stator 4 of the present invention includes a stator core 40 , a winding 42 , an insulating component 44 , a slot wedge 46 and a magnetically conductive insert 48 . The inner edge of the stator core 40 is provided with a plurality of tooth slots 400, and the winding 42 passes through the tooth slots 400 of the iron core 40, and the insulating member 44, the slot wedge 46 and the magnetically conductive insert 48 are all arranged on the stator core 40. 400 per cogging, see image 3 It is an enlarged view of a tooth slot 400 of the stator 4 .

[0030] The gullets 400 have a narrower notch 402 formed ...

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Abstract

The invention relates to a permanent-magnetic brushless direct current motor which comprises a shell, a front end cover, a rear end cover, a stator, a rotor, and a position sensor, wherein the stator comprises a stator iron core and a winding, the inner side of the stator iron core is provided with a plurality of tooth grooves, the winding passes through the tooth grooves; the rotor comprises a rotating shaft, a rotor iron core and at least one pair of magnetic steels, the rotor iron core is sleeved on the rotating shaft, the magnetic steels are arranged at the periphery of the rotor iron core; and the position sensor comprises a circuit board and a Hall element connected with the circuit board, wherein magnetic conduction inlaid strips used for magnetic conduction are arranged in the tooth grooves of the stator iron core, the cross sections of the magnetic steels of the rotor have an arc shape the thickness at the middle part of which is more than those at both sides, and the Hall element of the position sensor is close to end parts of the magnetic steels of the rotor and takes the magnetic leakage of the magnetic steels of the rotor as a running signal of the Hall element. The permanent-magnetic brushless direct current motor can effectively save production cost and improve the working performance of the motor.

Description

technical field [0001] The invention relates to a motor, in particular to a permanent magnet brushless DC motor. Background technique [0002] The permanent magnet brushless DC motor is a new type of mechatronic motor that combines electronic technology and traditional motor technology. It has the same linear mechanical characteristics as traditional brushed motors, and also has wide speed range, large starting torque, high efficiency, Easy to control and other better performance, so it has been widely used. [0003] A permanent magnet brushless DC motor is mainly composed of a stator, a rotor and a position sensor. Among them, the stator includes a stator core and windings, the rotor includes a rotating shaft, rotor core and magnetic steel, and the position sensor includes a circuit board and a Hall element. In conventional permanent magnet brushless DC motors, the stator core is made of silicon steel sheets with slotted punching sheets stacked or welded, and the magnetic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/00H02K29/08H02K1/27
Inventor 范安成
Owner 范安成
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