Patent ID: 7419033
Filing Date: 2008-09-02
Classification: B66B

Abstract:
1. An emergency brake device for an elevator comprising: a brake shoe portion provided inside one of a sheave and a deflector sheave of an elevator and having a brake shoe at a lower end of the brake shoe portion, the brake shoe generating a braking force due to friction upon abutting an inner wall of an outer peripheral frame of one of the sheave and the deflector sheave at a time of braking, the brake shoe portion tilting at the time of braking by the braking force, the brake shoe portion having built therein a spring mechanism provided between the brake shoe and a king pin, the king pin extending along an axis that is offset with respect to a centerline passing through a rotation shaft of one of the sheave and the deflector sheave, and the king pin is fixed to a bearing of the rotation shaft, the spring mechanism having a first end movably supported by the king pin and a second end connected to the brake shoe, and the spring mechanism absorbing a force generated between the brake shoe and the king pin due to the braking force, the spring mechanism comprising: a compression coil spring pressing the brake shoe toward the sheave at the time of braking and a block which receives the compression force of the compression coil spring and which has a support hole in the form of a slot, the support hole being sized, shaped, and positioned to receive the king pin.