JPH0451062U

JPH0451062U -

Info

Publication number: JPH0451062U
Application number: JP9139490U
Authority: JP
Priority date: 1990-08-31
Filing date: 1990-08-31
Publication date: 1992-04-30

Description

[Brief explanation of the drawing]

第１図は、この考案のブラシモータに於けるブ
ラシ部の実施例を示す構成図である。第２図及び
第３図は、この考案のブラシモータに於けるブラ
シ部の他の実施例を示す構成図である。第４図は
、供給電流と比例した電流をロータに供給するた
めの、比例回路のブロツク図である。第５図は、
従来のブラシモータに於けるブラシ部の一例を示
す構成図である。第６図は、一般のブラシモータ
に於ける構造図を示す。１……ブラシ、２……ブラシ保持器、３ａ……
ワイヤコイル、ｂ……界磁ワイヤコイル、４……
永久磁石、５……スプリング、６……整流子片、
７……ロータ、８……ステータ、１０……電源線
。 FIG. 1 is a configuration diagram showing an embodiment of the brush section in the brush motor of this invention. FIGS. 2 and 3 are configuration diagrams showing other embodiments of the brush portion in the brush motor of this invention. FIG. 4 is a block diagram of a proportional circuit for supplying a current proportional to the supply current to the rotor. Figure 5 shows
It is a block diagram which shows an example of the brush part in a conventional brush motor. FIG. 6 shows a structural diagram of a general brush motor. 1... Brush, 2... Brush holder, 3a...
Wire coil, b... Field wire coil, 4...
Permanent magnet, 5... Spring, 6... Commutator piece,
7... Rotor, 8... Stator, 10... Power line.

Claims

[Claims for Utility Model Registration] (1) In the brush portion of the brush motor that supplies current to the rotor, a first magnetic field generating means that generates a first magnetic field by the supply of the current, and a second magnetic field that generates a second magnetic field. and a second magnetic field generating means, which generates a second magnetic field.
One of the magnetic field generating means is attached to one end of the brush, the other end is in contact with a commutator piece of this motor, and the other of the magnetic field generating means repels the magnetic field generated by the one magnetic field generating circuit. a first of the first and second magnetic field generating means arranged to generate a magnetic field and generated by the supply of the current;
A brush pressing force variable device characterized in that the other end of the brush is pressed against the commutator piece by repulsion of the second magnetic field. (2) In the brush portion of the brush motor that supplies current to the rotor, a first magnetic field generating means that generates a first magnetic field by supplying the current, and a second magnetic field generating means that generates a second magnetic field. and these 2
One of the two magnetic field generating means is attached to one end of the brush, the other end contacts the commutator piece of this motor, and the other of the magnetic field generating means attracts the magnetic field generated by the one magnetic field generating circuit. a first of the first and second magnetic field generating means arranged to generate a magnetic field and generated by the supply of the current;
A brush pressing force variable device characterized in that the other end of the brush is pressed against the commutator piece by attraction of a second magnetic field. (3) The brush pressing pressure variable device according to claim 1 or 2, wherein the second magnetic field generating means generates the second magnetic field by supplying the current. (4) The variable brush pressing pressure device according to any one of claims 1 to 3, wherein the first and second magnetic field generating means are installed in a brush holder that holds the brush portion.