JPH0348368U

JPH0348368U -

Info

Publication number: JPH0348368U
Application number: JP10949989U
Authority: JP
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1991-05-09

Description

[Brief explanation of drawings]

第１図は電動機の一部を示す斜視図、第２図は
第１図のＡ−Ａ線に沿つた断面図、第３図は同じ
く第１図のＡ−Ａ線に沿つた断面図、第４図は従
来技術によるブラシ摩耗限度検出装置の一部切欠
き断面図である。１……軸芯、２……スリツプリング、３……ブ
ラシ、４……ブラシケース、６……スプリング、
９……検出ピン、１０……端子。 FIG. 1 is a perspective view showing a part of the electric motor, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a sectional view taken along the line A-A in FIG. 1. FIG. 4 is a partially cutaway sectional view of a brush wear limit detection device according to the prior art. 1... Shaft core, 2... Slip ring, 3... Brush, 4... Brush case, 6... Spring,
9...Detection pin, 10...Terminal.

Claims

[Scope of utility model registration request]

A brush that is in sliding contact with a slip ring fixed to the shaft core of the electric motor, a brush case that houses the brush, and a spring that is compressed between the brush and the brush case that biases the brush against the slip ring. an electric motor comprising: a detection pin embedded in the wear limit position of the brush; and a terminal arranged at a predetermined distance from the slip ring and which comes into contact with the detection pin and becomes conductive when the brush wears to the wear limit. Brush wear limit detection device.