| 摘要 |
PURPOSE: An angle change device for a seat of a collapsible easy chair is provided to enable a user to simply adjust an angle of the seat by making the seat being freely folded from 90degree to 180degree according to the weight of a user's body. CONSTITUTION: In the collapsible easy chair constructed so that a seat(S), consisting of a back frame(201) and a seat frame(401) hinged with each other, is connected to a main frame(100) in an angle variation manner by interposing a connection lever(600) linked to the lower side of the seat, the one end of a pair of roller installation plates is coupled to a hinge connector installed to a front horizontal rod(102) of the main frame, and three rollers are rotatably arranged between the plates so that the rollers form a regular triangle.
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