초록 ▼

A collapsible double door assembly includes a number of serially connected panels each provided with a pair of inwardly and outwardly deviated pivotal suspension rollers, a horizontal guide rail constituted by an inner rail member and an outer rail member arranged in parallel in close proximity for

A collapsible double door assembly includes a number of serially connected panels each provided with a pair of inwardly and outwardly deviated pivotal suspension rollers, a horizontal guide rail constituted by an inner rail member and an outer rail member arranged in parallel in close proximity for separately guiding the suspension rollers, and one or two door storage areas extending perpendicularly from the guide rail at one or both ends thereof and formed by separating and independently bending the two rail members with different radiuses of curvature each defining an arc of a quarter of a circle. The radius of curvature of the outer rail member is relatively greater than that of the inner rail member. The distance between the two rail members in a door storage area is slightly smaller than the distance between the two suspension rollers of a panel. With such an arrangement, each panel of the double doors can be freely twisted by independently varying the angle of pivotal movement of each of the suspension rollers of the panel. Consequently, the panels can be moved into or pulled out of the storage areas very smoothly, particularly because the panels are stored in the storage areas in a slightly twisted state.

대표청구항 ▼

A collapsible door assembly comprising: a horizontally extending longitudinal guide rail including an outer rail member and an inner rail member parallel and in close proximity to said outer rail member; a plurality of individual door panels that are serially connected, each said door panel having f

A collapsible door assembly comprising: a horizontally extending longitudinal guide rail including an outer rail member and an inner rail member parallel and in close proximity to said outer rail member; a plurality of individual door panels that are serially connected, each said door panel having first and second horizontally spaced rollers directed toward respective opposite sides of said panel; said panels being supported by said guide rail with said first roller of each panel guided by said outer rail member and with said second roller of each panel guided by said inner rail member, whereby said panels are movable along said guide rail; and a storage means at a first end of said guide rail for storing said panels in adjacent parallel alignment, said storage means comprising continuations of said outer and inner rail members curving therefrom at separate spaced locations along said guide rail, each said continuation including a curved portion in the form of an arc defining a quarter of a circle and a rectilinear portion extending perpendicular to said guide rail, said curved portion of said continuation of said outer rail member having a radius of curvature greater than that of said curved portion of said continuation of said inner rail member, and said rectilinear portions being spaced by a distance less than the distance between said first and second rollers of said panels.