JPH0431338U

JPH0431338U -

Info

Publication number: JPH0431338U
Application number: JP7294990U
Authority: JP
Priority date: 1990-07-11
Filing date: 1990-07-11
Publication date: 1992-03-13

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す断面図、第
２図は従来の磁性粒子式電磁連結装置の一例を示
す断面図である。図において、２は励磁コイル、３は第１のブラ
ケツト、４は第１のベアリング、５は第２のベア
リング、６は駆動回転軸、７はドライブメンバ、
９はドリブンメンバ、１０は磁性粒子、１１は被
駆動回転軸、１２は第２のブラケツト、１３は第
３のベアリング、１４は第４のベアリング、３０
は第１の磁性層、３２は第１の検出コイル、３３
は第１の磁気収束層、３４は第２の磁性層、３６
は第２の検出コイル、３７は第２の磁気収束層で
ある。なお、各図中、同一符号は同一又は相当部
分を示す。 FIG. 1 is a sectional view showing an embodiment of this invention, and FIG. 2 is a sectional view showing an example of a conventional magnetic particle type electromagnetic coupling device. In the figure, 2 is an excitation coil, 3 is a first bracket, 4 is a first bearing, 5 is a second bearing, 6 is a drive rotation shaft, 7 is a drive member,
9 is a driven member, 10 is a magnetic particle, 11 is a driven rotating shaft, 12 is a second bracket, 13 is a third bearing, 14 is a fourth bearing, 30
is the first magnetic layer, 32 is the first detection coil, 33
is the first magnetic convergence layer, 34 is the second magnetic layer, 36
37 is a second detection coil, and 37 is a second magnetic convergence layer. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A first bracket that rotatably supports a drive rotating shaft via a first bearing and a second bearing, a drive member fixed to the drive rotating shaft, and a third bearing and a fourth bearing. a second bracket rotatably supporting a driven rotating shaft; a driven member fixed to the driven rotating shaft; magnetic particles filled between the driven member and the drive member; A magnetic particle type electromagnetic coupling device comprising an excitation coil that magnetizes particles and connects the drive member and the driven member in a chain,
a first detection coil provided between the first bearing and the second bearing;
a first magnetic layer provided on the outer circumferential surface of the drive rotation shaft corresponding to the detection coil; and a second detection coil provided between the third bearing and the fourth bearing. , a second sensor provided on the outer circumferential surface of the driven rotating shaft corresponding to the detection coil.
When a rotational torque is applied to the drive rotation shaft, a change in magnetic permeability occurs due to strain in the first magnetic layer and the second magnetic layer, and the change in permeability is caused to change in the magnetic layer. A magnetic particle type electromagnetic coupling device, characterized in that the first detection coil and the second detection coil are configured to perform detection.