JPS5928276U

JPS5928276U - small fan electric motor

Info

Publication number: JPS5928276U
Application number: JP12167282U
Authority: JP
Inventors: 伴　五紀
Original assignee: 株式会社セコ−技研
Priority date: 1982-08-12
Filing date: 1982-08-12
Publication date: 1984-02-22

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、本考案装置の説明図、第２図は、その１部の
説明図、第３図は、マグネット回転子の平面図、第４図
は、電機子コイルの説明図、第５図は、電機子の平面図
、第６図は逆起電力の検出回路図をそれぞれ示す。１・・・基板、２・・・軟鋼板、２ａ、　２ｂ、　２Ｃ
，２ｄ・・・ファン、３・・・磁性体ヨーク、４，３ａ
、３ｂ。３Ｃ・・・電機子コイル、５，７・・・リング状のマグ
ネット、６・・・マグネット回転子、８．８ａ・・・空
隙、１３・・・スイッチングトランジスタ、１１ａ。１１ｂ・・・コイル、１５・・・差動増巾回路、１２・
・・電源正極。Fig. 1 is an explanatory diagram of the device of the present invention, Fig. 2 is an explanatory diagram of a part thereof, Fig. 3 is a plan view of the magnet rotor, Fig. 4 is an explanatory diagram of the armature coil, and Fig. 5 is an explanatory diagram of the armature coil. The figure shows a plan view of the armature, and FIG. 6 shows a back electromotive force detection circuit diagram. 1... Board, 2... Mild steel plate, 2a, 2b, 2C
, 2d...Fan, 3...Magnetic material yoke, 4, 3a
, 3b. 3C... Armature coil, 5, 7... Ring-shaped magnet, 6... Magnet rotor, 8.8a... Air gap, 13... Switching transistor, 11a. 11b... Coil, 15... Differential amplification circuit, 12.
...Positive power supply.

Claims

[Scope of utility model registration request]

A substrate made of a flat plate, a disk-shaped magnetic yoke whose bottom surface is fixed to the center of the substrate, and a fan-shaped multi-phase armature coil arranged radially from the center on the surface of the yoke.
a first ring-shaped magnet fixed to the above-described mild steel plate along the periphery of the yoke; a disc-shaped mild steel plate having a plurality of fans provided at axially symmetrical positions on the periphery;
a disk-shaped magnetic rotor fixed to the center of the mild steel plate; a ring-shaped second magnet fixed to the mild steel plate along the periphery of the magnetic rotor and provided with the fan; In the axial direction of the magnet rotor mentioned above,
N and S field magnetic poles magnetized with equal opening angles so that adjacent ones have different polarities, and the magnetic yoke described above so that the magnetic field of the field magnetic poles penetrates the armature coil. When the surfaces of the magnet rotors are positioned facing each other at a predetermined distance, the opposing distance at which the V-shaped similar uneven surfaces provided on the first and second magnets are fitted is longer than the predetermined distance described above. Ring-shaped magnetic poles of the same polarity are magnetized on each of the opposing surfaces of the ζ first and second magnets, facing each other at a small distance so that magnetic attractive force and repulsive force are balanced, and A small fan characterized by comprising an energization control circuit made of a transistor that energizes an armature coil via the output of a position detection device that detects the rotational position of a magnet rotor to generate rotational torque in one direction. Electric motor.