| 摘要 |
A self holding type connecting device comprising an armature (1) which is disposed movably in an axial direction, a magnetic path member (2) having a cross section formed along a closed loop and having an axial space (2a) wherein axial movement of the armature (1) is permitted, a permanent magnet (4) secured to the magnetic path member (2) and generating two kinds of magnetic flux which pass through the armature (1) and the magnetic path member (2), an electromagnetic coil (3) which generates the magnetic flux for moving the armature (1) in an axial direction against the two kinds of magnetic flux, and switch for switching direction of the magnetic flux from the electromagnetic coil (3). In the device, decrease of connecting force due to abrasion of pads does not occur and power consumption can be remarkably reduced. |
