| 摘要 |
PURPOSE:To obviate the occurrence of trouble, by installing a clutch, which is disconnected in time of overload acting, interposingly in a driving device relatively moving a couple of vertical frames where both ends of each slat fitted in a multistep way are supported, in a vertical direction, in case of a rear window blind for automobiles. CONSTITUTION:In a state that each of slats 3 opens a blind in a horizontal position, when a control switch is operated to close a blind 1, rotation of a motor 17 is brought into a deceleration state 18 and transmitted to an output shaft 19. At this time, an engaging body 20 is forcibly pressed down to an adapter plate 15 by dint of a spring 26 via a pressing plate 25 and a clutch plate 24 so that the engaging body 20 and the adapter plate 25 both are rotated in the same direction due to rotation of the output shaft 19. With this, both 20 and 15 are turned round upward with a base end part of a supporting rod 22 as a fulcrum, and vertical frames 5a and 5b are relatively moved up and down, making the blind 1 come into a state of being closed. Afterward the transmission of turning force to the side of the adapter plate 15 of the output shaft 19 is cut by no- load running between both plates 24 and 25; inasmuch as such torque as being more than the specified value is imposed thereon. |
