AIR CYLINDER DEVICE WITH FALL PREVENTION MECHANISM, AND FALL PREVENTION MECHANISM FOR AIR CYLINDER DEVICE

摘要

1. An air cylinder device comprising a cylinder body and a piston rod which moves back and forth by a surge of pressurized air to the cylinder body, the air cylinder device comprising: a stationary member fixed to the cylinder body; A plurality of brake members which are supported by the holding member so as to be able to move back and forth with respect to the piston rod; A biasing member for pushing these brake members against the piston rod and locking the piston rod to the fixing member; And an unlocking air mechanism that is operated by a pressurized air source common to the pressurized air source of the air cylinder apparatus that holds the brake member in a noncontact position with the piston against the urging force of the biasing member .