Patent ID: 9019051
Filing Date: 2015-04-28
Classification: H01H,Y10T

Abstract:
1. An attachment/detachment structure for an electromagnetic contactor and an accessory unit, comprising: a plurality of hooking holes formed in a main body side coupling surface of the electromagnetic contactor, and a movable hook portion and a fixed hook portion protruding from a unit side coupling surface of the accessory unit at positions corresponding to the hooking holes and having claws, the accessory unit being attached to the electromagnetic contactor by engaging the claws of the fixed hook portion and the movable hook portion with the hooking holes, wherein the movable hook portion includes a hook portion main body formed with a movable claw and a pressed piece, and a straight spring; the hook portion main body is slidably accommodated in a main body accommodation concave portion formed in the unit side coupling surface; and the straight spring is accommodated in a spring accommodation concave portion formed in the unit side coupling surface to be orthogonal to a sliding direction of the hook portion main body, a middle portion in a length direction of the straight spring engaging with the hook portion main body, and wherein when the pressed piece is pressed and the hook portion main body slides in a disengaging direction to bring the movable claw and one of the hooking holes into a disengaged state, an elastic restoring force from elastically deforming the straight spring into a bow-like shape acts on the hook portion main body in a direction opposite to the disengaging direction.