Opening control device

An opening control device, which is provided on an auxiliary opening-and-closing member that is opened in such a way as to follow an opening of a main opening-and-closing member, and which is configured to control the opening of the auxiliary opening-and-closing member, the opening control device comprising:

• a locking portion configured to switch between a locking state, in which the auxiliary opening-and-closing member is locked in a closed state relative to a frame member, and an unlocking state;
• a detecting portion, which is placed at an abutment portion of the auxiliary opening-and-closing member with the main opening-and-closing member, and which has a movable member that is moveable between a protruding position and a pushed-in position, the movable member being pushed into the pushed-in position from the protruding position by the main opening-and-closing member when the main opening-and-closing member is in a closed state and the auxiliary opening-and-closing member is in the closed state;
• a drive portion that is linked with an opening operation of the auxiliary opening-and-closing member;
• a driven portion, which is operated by movement of the drive portion, and which is configured to shift the locking portion from the locking state to the unlocking state;
• a connecting portion that is moveable between a connecting position, in which the drive portion and the driven portion are connected together so that the movement of the drive portion is transmitted to the driven portion during the opening operation, and a disconnecting position;
• and
• a first biasing member that biases the connecting portion from the disconnecting position toward the connecting position,
• wherein the movable member is in direct abutment with the connecting portion to move the connecting portion from the connecting position to the disconnecting position when the movable member is moved from the protruding position to the pushed-in position,
• wherein the connecting portion is movable within a displacement area, which includes the connecting position and a predetermined rotational area from the connecting position to the disconnecting position,
• wherein, when the connecting portion is in the displacement area, the connecting portion maintains the connection of the drive portion with the driven portion,
• wherein the connecting portion is movable within the displacement area toward the disconnecting position while the movable member is in the protruding position,
• wherein the connecting portion is moved to the disconnecting position when the movable member is pushed into the pushed-in position,
• wherein the movable member comprises a stopper that retains the movable member in the protruding position by being brought into abutment with a support member movably supporting the movable member,
• wherein an outer circumference of the stopper is covered with a buffer material, and
• wherein the detecting portion further comprises a second biasing member that biases the movable member from the pushed-in position toward the protruding position.