Patent ID: 9027627
Filing Date: 2015-05-12
Classification: E06B

Abstract:
1. A sunlight-shielding device comprising: a head box; a first shielding material, and second shielding material suspended from the head box and moved up and down by a first up-and-down cord and second up-and-down cord, respectively; a first up-and-down cord wind-up drum and second up-and-down cord wind-up drum provided in the head box; and a pulley operation drive device, wherein: the pulley operation drive device has a pulley driven and rotated in a selected rotating direction using an operation cord; and a first up-and-down one-way clutch and second up-and-down one-way clutch that transmit rotations of the pulley in an opposite direction of first direction and second direction to the first up-and-down cord wind-up drum and second up-and-down cord wind-up drum, respectively; the first up-and-down one-way clutch and second up-and-down one-way clutch each have an input disk, input plate, top plate, and output drum provided rotatably on a center pin; the input disk and input plate are coupled with idle therebetween in a rotating direction; the top plate has a guide groove that rotatably holds an engagement top; and the engagement top is pivoted on the input plate and always biased by a return spring provided between the input plate and top plate in a direction of holding the engagement top inside the guide groove of the top plate, wherein the input plate is rotated in a predetermined direction by the input disk which rotates by a rotational force of the pulley, whereby the engagement top projects from the top plate along the guide groove and engages with an engagement projection strip on the output drum to transmit a rotation of the input plate to the output drum.