JPH0286106U - - Google Patents

Description

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of the first embodiment, FIGS. 2 and 3 are partially enlarged sectional views showing the procedure for connecting the movable core and the rod, and FIG. The figure is a sectional view of a second embodiment of the present invention, and FIGS. 5 and 6 are partially enlarged sectional views showing the procedure for connecting the movable core rods. 1: housing, 3: coil, 4: permanent magnet,
8, 28: Plunger, 9, 29: Movable iron core, 1
0,30: center hole, 11,31: rod, 16,
37: Fitting groove, 18, 40: Caulking tool.

Claims (1)

[Claims for Utility Model Registration] Two coils and a ring-shaped permanent magnet disposed between the two coils are coaxially fixed in a housing, and a rod to which a driven member is connected is connected to a movable iron core. A plunger fixed to the permanent magnet is inserted through the permanent magnet so as to be freely movable in the axial direction, and the plunger is moved toward the coil by the magnetic attraction force generated by the excitation of one of the coils, and then the coil is excited. In the bistable keep solenoid, the two coils alternately perform an operation of releasing the plunger and holding the plunger immovably by the magnetic attraction force of the permanent magnet, wherein a center hole formed in the movable iron core of the plunger is provided. The rod is tightly fitted, and a circumferential fitting groove formed on the outer periphery of the rod is arranged along the opening edge of the center hole of the movable iron core, and the rod is inserted into the center hole of the end face of the movable iron core. The rod is fixed to the movable iron core by applying pressure in the axial direction with a caulking tool to plastically deform the wall thickness near the opening edge and fitting it into the fitting groove. A bistable keep solenoid featuring: