Register

A register comprising:

• a damper drive mechanism for tilting a damper that tilts between an open position where an air passage is open and a closed position where the air passage is closed by transmitting rotation, while changing a direction thereof, of a control knob transmitted from the control knob via a transmission shaft to the damper to tilt the damper between the open position and the closed position,
• the damper drive mechanism comprising:
• a boss member coupled to the control knob via the transmission shaft;
• a case member holding the boss member rotatably about a boss pivot;
• and
• a cam member held by the case member rotatably about a camshaft and coupled to the boss member, the cam member rotating in accordance with rotation of the boss member to tilt the damper, wherein
• coupling between the transmission shaft and the control knob and coupling between the transmission shaft and the boss member are each made with a joint mechanism, and
• the case member
• holds the camshaft at a position offset from a straight line that is along an axial direction of the boss pivot in a direction perpendicular to the axial direction of the boss pivot to rotate the cam member about the camshaft that is eccentric in accordance with the rotation of the boss member.