Clutch device, drill chuck, power tool, and bidirectional rotation method of drill chuck

A clutch device, comprising

• a return elastic member,
• a transmission assembly,
• a rotating portion, and
• a trigger,
• wherein the transmission assembly comprises a first engagement portion and a second engagement portion which are oppositely arranged;
• one of the first engagement portion and the second engagement portion is configured to be rotatable in synchronization with a front body of a drill clutch;
• and the other one of the first engagement portion and the second engagement portion is configured to be rotatable in synchronization with a rear body of the drill clutch;
• an engagement between the first engagement portion and the second engagement portion enables the front body and the rear body to rotate in synchronization with each other;
• wherein rotation of the rotating portion enables the trigger to push the one of the first engagement portion and the second engagement portion to move so as to make the return elastic member compressed or return to an initial position, rotation of the rotating portion in a first direction enables the return elastic member to be compressed, so as to make the first engagement portion and the second engagement portions disengaged from each other;
• and rotation of the rotating portion in a second direction enables the compressed return elastic member to return to the initial position so as to make the first engagement portion and the second engagement portion engaged with each other;
• wherein the trigger comprises levers and rotation of the rotating portion in the first direction enables the levers to pry the second engagement portion so as to make the second engagement portion move along the axial direction of the rear body such that the first engagement portion move along the axial direction of the rear body such that the first engagement portion and the second engagement portion are disengaged from each other;
• wherein the trigger comprises a plurality of connecting rods fixed on the rotating portion and extending along an axial direction of the rotating portion, each connecting rod having a contact and a side surface exposed to an outside of the rotating portion;
• and
• wherein the levers are separated and disconnected from each other, each lever having a first raised portion and a second raised portion connected to the first raised portion, where the first raised portion and the second raised portion are arranged with an angle therebetween.