JPS5923610U

JPS5923610U - Cylinder position detection device

Info

Publication number: JPS5923610U
Application number: JP11883882U
Authority: JP
Inventors: 渉清水; 裕二松木
Original assignee: 株式会社エスジ−
Priority date: 1982-08-06
Filing date: 1982-08-06
Publication date: 1984-02-14
Also published as: JPH0226003Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はこの考案に係るシリンダ位置検出装置の一実施
例を示す軸方向断面図、第２図は第１図の■−■線断面
図、第３図は第１図の実施例におけるコイルの結線形式
の一例を示す回路図、第４図は位相ずれをディジタル的
に測定するための回路の一例を示すブロック図、第５図
はこの考案の他の実施例を示す軸方向断面図、である。１：・・・・・ステータアセンブリ、２〜５・・・・・
・１次コイル、６〜９・・・・・・２次コイル、１０・
・・・・・ステータ、１１・・・・・・ケーシング、１
２・・・・・・シリンダ、１３・・・・・・ロッド、１
４・・・・・・ピストン、１３ａ・・・・・・ら旋突条
、１３ｂ・・・・・・非磁性スリーブ、１３Ｃ・・・・
・・溝部、１３ｄ・・・・・・リング状突起、Ｔ・・・
・・・ステータ磁極端部の歯。FIG. 1 is an axial sectional view showing an embodiment of the cylinder position detection device according to this invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a coil in the embodiment of FIG. 1. 4 is a block diagram showing an example of a circuit for digitally measuring phase shift; FIG. 5 is an axial cross-sectional view showing another embodiment of this invention; It is. 1: Stator assembly, 2 to 5...
・Primary coil, 6 to 9...Secondary coil, 10・
...Stator, 11 ...Casing, 1
2...Cylinder, 13...Rod, 1
4... Piston, 13a... Spiral protrusion, 13b... Non-magnetic sleeve, 13C...
...Groove, 13d...Ring-shaped protrusion, T...
...Teeth at the end of the stator pole.

Claims

[Claims for Utility Model Registration] A stator assembly including a stator in which a plurality of magnetic resins formed by winding an 11th coil and a secondary coil are arranged at predetermined intervals in the circumferential direction, the central space of the stator is a cylinder. The rod is arranged so as to be almost concentric with the rod, and the rod is slidably penetrated through the center space, and is fixed at a predetermined location of the cylinder, and when the rod is made of a magnetic material, a small amount of the surrounding area is In both cases, a plurality of protrusions are arranged at a predetermined pitch in the axial direction on the surface facing the stator magnetic poles, and between the stator magnetic poles, there is a misalignment in the correspondence between the protruding portions of the rods and the magnetic pole tips. and the primary coils of each of the stator magnetic poles are individually excited by reference AC signals whose phases are shifted from each other according to the arrangement angle of the stator poles, whereby the reference AC signal is phase-shifted according to the linear position of the rod. A cylinder position detection device characterized in that: is obtained on the side of the secondary coil. 2. The cylinder position detection device according to claim 1, wherein the rod is provided with rotating protrusions at a predetermined pitch around the rod as the projections. 3. The cylinder position detection device according to claim 1 or 2, wherein a sleeve made of a non-magnetic material is fitted around the rod.