公开(公告)号：US12123190B2

公开(公告)日：2024-10-22

申请号：US17624719

申请日：2020-07-03

Applicant: UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION

Inventor： Kyung Ju Hwang ,  Yun Jin Kim ,  Alexander Hub

IPC: E04B7/14 ,  E04B7/16 ,  E04B7/18 ,  E04H15/64

CPC classification number: E04B7/18 ,  E04B7/16 ,  E04B7/14 ,  E04B7/166 ,  E04H15/64

Abstract: Provided is a breakaway-prevent trolley system for a flexible retractable structure, including a plate that supports a cable, and a trolley that is movable on the cable and folds or unfolds a flexible film. The trolley includes: a slider movable along the cable; a flexible film coupling member provided under the slider and coupled to the flexible film; an elastic module (E) provided inside the slider. The elastic module includes: an elastic block including a spring therein and moving under an elastic force of the spring by a predetermined distance in a vertical direction; and an upper support plate that supports the elastic block from above, a side support-plate that supports the elastic block from a side, and a lower support plate that supports the elastic block from below, and a lower surface of the elastic block vertically movable while in contact with an upper surface of the plate.