JPH0230277U

JPH0230277U -

Info

Publication number: JPH0230277U
Application number: JP10947088U
Authority: JP
Priority date: 1988-08-19
Filing date: 1988-08-19
Publication date: 1990-02-26

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例によるフラツトモ
ートルの部分破断正面図、第２図は第１図の検出
器部の拡大図、第３図は従来の部分破断正面図、
第４図は第３図の検出器部の拡大図である。図中、１はリアブラケツト、２は永久磁石、４
はアマチユア、１１は検出器、１１ａはコイル、
１１ｅはロータ、１６はマグネツト、１７はボビ
ン、１７ａは弾性アームである。尚、図中、同一
符号は同一又は相当部分を示す。 Fig. 1 is a partially cutaway front view of a flat motor according to an embodiment of this invention, Fig. 2 is an enlarged view of the detector section of Fig. 1, and Fig. 3 is a partially cutaway front view of a conventional flat motor.
FIG. 4 is an enlarged view of the detector section of FIG. 3. In the figure, 1 is the rear bracket, 2 is the permanent magnet, and 4 is the rear bracket.
is amateur, 11 is detector, 11a is coil,
11e is a rotor, 16 is a magnet, 17 is a bobbin, and 17a is an elastic arm. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A permanent magnet fixed to a rear bracket made of a magnetic material, a front bracket made of a magnetic material facing the permanent magnet with a gap in the axial direction, and rotatably supported between the permanent magnet and the front bracket. , an amateur with a built-in coil, a commutator connected to the above coil,
A brush that comes into contact with the commutator, a rotating shaft that rotates together with the commutator, and a detector that detects the rotational speed of the rotating shaft. , a resin bobbin with an elastic piece formed on the inner circumference side, and an axially magnetized magnet held on the inner circumference side of the bobbin by the elastic force of the elastic arm;
A flat motor characterized by comprising a stator that constitutes a part of a magnetic path generated from the magnet, and a rotor.