Driving device of caulking gun

A driving device of caulking gun including:

• a housing, defining an axial direction;
• a driving assembly, disposed on the housing, including a motor assembly and a driving gear, the motor assembly and the driving gear being linked-up to rotate simultaneously;
• a threaded rod, slidably disposed on the housing and being nonrotatable with respect to the housing, the threaded rod being formed with a spiral groove;
• a transmission assembly, arranged in the housing, including a transmission sleeve and a plurality of abutting members, the transmission sleeve being sleeved onto the threaded rod and being radially formed with a plurality of through holes, the abutting members being received in the through holes respectively, the transmission sleeve and the driving gear being linked-up;
• a clutch device, including a restriction assembly and a braking member, the restriction assembly being sleeved onto the transmission sleeve, the braking member being movable with respect to the housing between a first position and a second position;
• wherein when the braking member is located at the first position, the braking member radially abuts against the restriction assembly, the restriction assembly pushes the abutting members to make the abutting members abut against the spiral groove so that the threaded rod is irremovable with respect to the transmission sleeve along the axial direction;
• when the braking member is located at the second position, the restriction assembly is not abutted against by the braking member, the abutting members are free from restriction by the restriction assembly so that the abutting members are able to leave the spiral groove and that the threaded rod is slidable with respect to the transmission sleeve along the axial direction;
• wherein the braking member is sleeved onto the transmission sleeve and is slidable with respect to the transmission sleeve along the axial direction, the braking member includes a circumferential wall;
• when the braking member is located at the first position, the circumferential wall is sleeved onto the restriction assembly;
• when the braking member moves toward the second position, the braking member moves away from the restriction assembly, the circumferential wall leaves the restriction assembly.