Abstract: The present disclosure provides a power transmission device in which stress is reduced and a vehicle air-conditioning device. An air-conditioning device has an inside/outside air door. A power transmission device drives the inside/outside air door. The power transmission device has a motor, a gear train, and a cam mechanism. A first gear of the gear train provides a rotatable member. A plurality of lock mechanisms is provided, which stops a rotation of the first gear at one end and/or the other end in a rotation direction of the first gear. The plurality of lock mechanisms provide a plurality of contacts between the first gear and a stationary link cover.

Abstract: The present disclosure provides a power transmission device in which stress is reduced and a vehicle air-conditioning device. An air-conditioning device has an inside/outside air door. A power transmission device drives the inside/outside air door. The power transmission device has a motor, a gear train, and a cam mechanism. A first gear of the gear train provides a rotatable member. A plurality of lock mechanisms is provided, which stops a rotation of the first gear at one end and/or the other end in a rotation direction of the first gear. The plurality of lock mechanisms provide a plurality of contacts between the first gear and a stationary link cover.

Abstract: The bed is equipped with a back lift mechanism and comprises a thigh support mechanism for supporting only the thighs of a user. The bed further comprises cooperative means for performing a thigh lifting action of said the thigh support mechanism in cooperation with the back lift mechanism in back lifting action. The thigh support mechanism has a thigh support member, which has one end, proximal to the waist section of the bed, pivotally mounted on the bed frame to support only the thighs. The thigh support member has a width smaller than that of the bed frame and is provided only at the central region of the width of the bed frame.

Abstract: The bed is equipped with a back lift mechanism and comprises a thigh support mechanism for supporting only the thighs of a user. The bed further comprises cooperative means for performing a thigh lifting action of said the thigh support mechanism in cooperation with the back lift mechanism in back lifting action. The thigh support mechanism has a thigh support member, which has one end, proximal to the waist section of the bed, pivotally mounted on the bed frame to support only the thighs. The thigh support member has a width smaller than that of the bed frame and is provided only at the central region of the width of the bed frame.