JPS6438517U

JPS6438517U -

Info

Publication number: JPS6438517U
Application number: JP13287787U
Authority: JP
Priority date: 1987-08-31
Filing date: 1987-08-31
Publication date: 1989-03-08

Description

[Brief explanation of the drawing]

第１図は本案に係る差動トランスの第１の実施
例の構造を示す側断面図、第２図は本案に係る差
動トランスの他の実施例を示す側断面図、第３図
は従来の差動トランスの構造を示す側断面図であ
る。１０……差動トランス本体、１１……作動軸、
２０……外筒ケーシング、２１，４０……ボビン
、２２，２３……コイル、２４，２５……軸受、
４１……軸受部、３０……軟磁性体。 FIG. 1 is a side sectional view showing the structure of a first embodiment of the differential transformer according to the present invention, FIG. 2 is a side sectional view showing another embodiment of the differential transformer according to the present invention, and FIG. 3 is a conventional FIG. 2 is a side sectional view showing the structure of a differential transformer. 10... Differential transformer body, 11... Operating shaft,
20... Outer cylinder casing, 21, 40... Bobbin, 22, 23... Coil, 24, 25... Bearing,
41...Bearing portion, 30...Soft magnetic material.

Claims

[Scope of utility model registration request]

A casing fixed to a main body of the device having a movable body as a detection object, a cylindrical bobbin mounted inside this casing, primary and secondary coils wound around this bobbin, and a sliding coil centered around the bobbin. an operating shaft that is movably mounted, has one end connected to the movable body, and is moved forward or backward in the direction of the central axis of the bobbin as the movable body moves;
In a differential transformer that is assembled at a position corresponding to the coil on the operating shaft and includes a soft magnetic material that forms a magnetic field around the casing and the coil formed from the operating shaft, one end side of the bobbin is The casing is formed to protrude greatly in the axial direction from one end of the casing, and the lead wire connected to the coil is pulled out outward from the outer periphery of this protruding end, and a resin is fixed to the lead wire pull-out part, and the bobbin is attached to the bobbin. A differential transformer in which the inside of the casing is sealed by covering the lead wire extraction portion with resin.