Member replacement device

A member replacement device comprising:

• a housing (1);
• a cylindrical plug member (4) which protrudes from the housing (1);
• an output rod (5) which is inserted into a plug member cylindrical hole (4a) of the plug member (4) so as to be movable in an axial direction of the plug member cylindrical hole (4a);
• an engaging member (16) which is inserted into a through hole (15) formed in a circumferential wall of the plug member (4), the engaging member (16) being movable in the through hole (15) due to movement of the output rod (5) in the axial direction and being able to make contact with an engaging portion (41) of a fitting hole (40) formed in a clamping object (T) so that the plug member (4) becomes insertable;
• a cylindrical hole (6, 7) which is formed in the housing (1), the output rod (5) being inserted into the cylindrical hole (6, 7) to be movable in the axial direction;
• an operational member (9) which is rotatably accommodated in a recess (8) formed in a base-end-side end face of the output rod (5), the operational member (9) being configured to press and move the output rod (5) toward the leading end side in the axial direction;
• a biasing member (10) which is provided inside the cylindrical hole (6, 7) or with which the cylindrical hole (6, 7) is filled, the biasing member (10) being configured to press and move the output rod (5) toward the base end side in the axial direction;
• a guide hole (23) which is formed in a base end portion of the housing (1), the guide hole (23) extending in a direction intersecting with the axial direction;
• and
• a cam rod (24) which is movably inserted into the guide hole (23), a cam groove (25) into which the operational member (9) is fitted being formed in an outer circumferential surface of the cam rod (24),
• the cam groove (25) having a cam surface (25a) in order to press the operational member (9) toward the leading end side.