JPH01173618U

JPH01173618U -

Info

Publication number: JPH01173618U
Application number: JP7084488U
Authority: JP
Priority date: 1988-05-27
Filing date: 1988-05-27
Publication date: 1989-12-08
Anticipated expiration: 2003-05-27
Also published as: JPH0623930Y2

Description

[Brief explanation of the drawing]

第１図は、この考案に係る差動トランス式変位
センサの一実施例を示す要部構造断面図、第２図
は、差動トランス式変位センサの基本構造を示す
要部構造断面図、第３図は、差動トランスの基本
原理を示す説明図、第４図は、従来技術に係る差
動トランス式変位センサを示す要部構造断面図で
ある。１，１０……変位部材、２，５，１２……磁気
コア、３，６……ボビン、４，７，１４……コイ
ル、８，１５……ヨーク部材、９……カバー、１
１……リツプシール、１３……カバー付きボビン
、１６……シヤフト。 FIG. 1 is a cross-sectional view of the main structure of an embodiment of the differential transformer type displacement sensor according to the invention, and FIG. 2 is a cross-sectional view of the main structure of the basic structure of the differential transformer type displacement sensor. FIG. 3 is an explanatory diagram showing the basic principle of a differential transformer, and FIG. 4 is a sectional view of the main structure of a differential transformer type displacement sensor according to the prior art. 1, 10... Displacement member, 2, 5, 12... Magnetic core, 3, 6... Bobbin, 4, 7, 14... Coil, 8, 15... Yoke member, 9... Cover, 1
1...lip seal, 13...bobbin with cover, 16...shaft.

Claims

[Claims for Utility Model Registration] 1. A magnetic core interlocked with a displacement member, a bobbin that slidably stores this magnetic core inside, and an electric wire that is wound around the outer circumference of the bobbin and that corresponds to the position of the magnetic core. A coil that outputs a signal, a yoke member that is attached around this coil and fixes the coil,
In the differential transformer type displacement sensor having a cover for storing the yoke member inside the main body, the displacement member is composed of a non-magnetic shaft that slides within the bobbin, and the magnetic core is fitted with the shaft. A differential transformer type displacement sensor is formed of a cylindrical member, and has a convex portion whose tip is made of a sliding material formed on the outer periphery at the center of the surface of the cylindrical member. 2. The differential transformer type displacement sensor according to claim 1, wherein the displacement member has a convex portion formed on its outer periphery, the tip of which is a sliding member. 3. The differential transformer type displacement sensor according to claim 1, wherein the magnetic core has the convex portions at both ends. 4. With the magnetic core fitted to the displacement member, a convex portion formed on the magnetic core and a convex portion formed on the displacement member may cause the displacement member to have the magnetic field in a moving direction of the magnetic core. 3. The differential transformer type displacement sensor according to claim 2, wherein the core is disposed at approximately the same distance from the center of gravity when the core is fitted.