Patent ID: 7607518

Claim:
An emergency brake device for an elevator comprising: a connecting body capable of being displaced with respect to a sheave which is rotatable; a brake body provided to the connecting body, which is capable of coming into and out of contact with an outer periphery of the sheave and capable of being displaced in a rotation direction of the sheave while maintaining a contact with the outer periphery of the sheave; a brake drive device which displaces the connecting body in a direction in which the brake body comes into and out of contact with the outer periphery of the sheave; and a gripper metal including an inclined portion caused to incline with respect to the outer periphery of the sheave wherein a space between the inclined portion and the outer periphery of the sheave becomes smaller with distance, the brake body being meshed between the outer periphery of the sheave and the inclined portion when the brake body is displaced in the rotation direction of the sheave, wherein the brake body comes into contact with the inclined portion and with the outer periphery of the sheave and is meshed between the outer periphery of the sheave and the inclined portion when the brake body moves into the smaller space between the inclined portion and the outer periphery of the sheave, so that rotation of the sheave is braked.