An emergency brake device for an elevator includes a brake shoe portion
provided inside a sheave 1 or deflector sheave of an elevator and having
a brake shoe 5a 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 the sheave or deflector sheave at a time of
braking, the brake shoe portion having built therein spring mechanisms
51, 52 provided between the brake shoe and king pins 5f1, 5f2, which are
offset in a rotation direction of the sheave or deflector sheave with
respect to a centerline passing through a rotation shaft of the sheave or
deflector sheave and are fixed on a bearing 1b side of the rotation
shaft, the spring mechanisms each absorbing a force generated between the
brake shoe and the king pin due to the braking force and being connected
to the king pin at one end.