Reclining device for seat

A reclining device for a seat, comprising:

• a latch installed on a side of a seatback;
• and
• a striker module in which the latch is engaged with having a striker and being installed in a vehicle body, wherein the striker is engaged by the latch;
• wherein the latch moves along a rotation trajectory as the seatback reclines, and the striker module moves in a certain section the striker along a striker trajectory overlapping a the rotation trajectory of the latch in a state where the latch is engaged, and wherein with the striker such that movement of the striker reclines causes the seatback to recline together with the latch;
• wherein the striker module comprises:
• a lead screw installed on the vehicle body along a the striker trajectory on which the striker moves;
• a moving block penetrating penetrated by and in threaded engagement with the lead screw in a screw structure, the moving block being configured to move in a straight line along the lead screw in a state where such that a rotation motion of the lead screw is converted into a linear motion of the moving block;
• and
• a guide bracket positioned between the moving block and the striker;
• wherein the striker is configured to move together with the moving block;
• and
• a guide rod secured to the vehicle body, the guide rod penetrating the guide bracket in a direction parallel to the lead screw, and being configured to guide the straight movement of the moving block;
• and
• a motor configured to provide a rotational driving force to the lead screw.
• wherein the reclining device further comprises a lead screw installed on the vehicle body along a trajectory on which the striker moves;
• a moving block penetrating the lead screw in a screw structure, the moving block being configured to move in a straight line along the lead screw in a state where a rotation motion of the lead screw is converted into a linear motion;
• and
• wherein the striker is configured to move together with the moving block.