JPS63191866U

JPS63191866U -

Info

Publication number: JPS63191866U
Application number: JP7930887U
Authority: JP
Priority date: 1987-05-26
Filing date: 1987-05-26
Publication date: 1988-12-09

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の回転子の底面図、第
２図は同上の断面図、第３図は同上の断面図、第
４図は同上の分解斜視図、第５図は同上のダボの
拡大斜視図、第６図は同上の羽根本体を除いた無
刷子電動機全体の断面図、第７図は従来例の断面
図である。１はセグメント磁石、２はヨーク、５は鉄心、
６はコイル、１０は駆動回路、１１はねじ穴、１
２はダボ、Ｒは回転子、Ｓは固定子、Ｋは隙間で
ある。 Figure 1 is a bottom view of the rotor according to the embodiment of the present invention, Figure 2 is a sectional view of the same, Figure 3 is a sectional view of the same, Figure 4 is an exploded perspective view of the same, and Figure 5 is an exploded perspective view of the same. FIG. 6 is an enlarged perspective view of the dowel, FIG. 6 is a sectional view of the entire brushless motor excluding the blade body, and FIG. 7 is a sectional view of a conventional example. 1 is a segment magnet, 2 is a yoke, 5 is an iron core,
6 is a coil, 10 is a drive circuit, 11 is a screw hole, 1
2 is a dowel, R is a rotor, S is a stator, and K is a gap.

Claims

[Scope of utility model registration request]

A rotor has a plurality of segment magnets placed on the inner peripheral surface of a cylindrical yoke that is closed on one side with a predetermined gap in the circumferential direction, and coils are wound inside the rotor to face each other in the radial direction. It has a stator having at least two magnetic poles made of a rotated laminated iron core, a magnetically sensitive element that detects the position of the rotor, and a drive circuit that drives and controls the rotor using the output of the magnetically sensitive element. In the brushless electric motor in which a screw hole for attaching the blade is provided on one surface of the yoke, a dowel having the screw hole for attaching the blade is formed to protrude into the gap between the segment magnets and also for positioning the segment magnets. A rotor structure of a brushless motor characterized by comprising: