Patent ID: 9121213
Filing Date: 2015-09-01
Classification: E05F,E05Y,Y10T

Abstract:
1. A switching mechanism to be arranged between a retaining member and a rotational member configured to make rotational movement relative to the retaining member, the switching mechanism switching a state between an operation allowed state where movement of the rotational member is allowed and a movement restrained state where the rotational member is retained at a selected stopped position, comprising: a main body including a shaft portion and attaching to the retaining member; a rotational body in a rotatably supported state and connecting to the rotational member, the rotational body rotating independently from the main body with the shaft portion as center of rotation; a swinging member swingably supported on the rotational body, the swinging member making contact with and detaching from the shaft portion in response to swinging movement of the swinging member; and a biasing member retained on the rotational body, the biasing member biasing the swinging member toward central axis of the shaft portion, wherein the swinging member detaches from the shaft portion against a biasing force of the biasing member by a centrifugal force generated at the swinging member in response to rotation of the rotational body rotating in conjunction with movement of the rotational member to switch the state of the switching mechanism to the operation allowed state in a state where the rotational member is operated to rotationally move, and the biasing force of the biasing member pushes the swinging member to make contact with the shaft portion and engages with the shaft portion by friction to retain the rotational body in a stopped state to switch the state of the switching mechanism to the movement restrained state in a state where the rotational member is stopped from making rotational movement.