University of Seoul Industry Cooperation Foundation

Alexander Hub

Kyung Ju Hwang

Yun Jin Kim

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.

Growing community of inventors

Stuttgart, Germany

Alexander Hub