JPH0160330U

JPH0160330U -

Info

Publication number: JPH0160330U
Application number: JP15340587U
Authority: JP
Priority date: 1987-10-06
Filing date: 1987-10-06
Publication date: 1989-04-17

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例の斜視図、第２
図ａ〜ｃはそれぞれ第１図の第１の実施例の動作
を説明するためのリードスイツチ駆動機構の側面
図、第３図は本考案の第２の実施例の側面図、第
４図ａ及びｂはそれぞれ第３図のリードスイツチ
が閉成状態になつたときのリードスイツチ駆動機
構の側面図である。１……リードスイツチ、１ａ……リード接点、
２……磁気シールド板、２ａ……磁気シールド部
、２ｂ……回転軸、２ｃ……舌片部、３……ブロ
ツク、４……移動子、５……永久磁石、６……測
定回路、１１……アマチユア、１１ｂ……回転軸
、１２……ばね、１３……ブロツク、１４……移
動子、１５……永久磁石、１６，１７……ヨーク
、Ａ〜Ｄ……変位位置。 Fig. 1 is a perspective view of the first embodiment of the present invention;
Figures a to c are side views of the reed switch drive mechanism for explaining the operation of the first embodiment shown in Figure 1, Figure 3 is a side view of the second embodiment of the present invention, and Figure 4 a. and b are side views of the reed switch drive mechanism when the reed switch of FIG. 3 is in the closed state, respectively. 1...Reed switch, 1a...Reed contact,
2... Magnetic shield plate, 2a... Magnetic shield part, 2b... Rotating shaft, 2c... Tongue piece part, 3... Block, 4... Mover, 5... Permanent magnet, 6... Measurement circuit, 11... Armature, 11b... Rotating shaft, 12... Spring, 13... Block, 14... Mover, 15... Permanent magnet, 16, 17... Yoke, A to D... Displacement position.

Claims

[Scope of utility model registration request]

a reed switch, a permanent magnet that forms a magnetic field around the reed switch when the reed switch is closed, a mover that moves in response to the displacement of the object to be measured, and the mover in a first displacement position. a magnetic field control section that forms a magnetic field caused by the permanent magnet around the reed switch at one time and separates the magnetic field caused by the permanent magnet from the reed switch when the mover is in a second displacement position; A reed switch drive mechanism comprising: