초록 ▼

A collapsible structure including an upright, a sliding block, at least one collapsible leg, and at least one a jointed structure, wherein the jointed structure includes a joint located on the upright or on the sliding block that includes two distinct jointing points, so that a side of a deployment

A collapsible structure including an upright, a sliding block, at least one collapsible leg, and at least one a jointed structure, wherein the jointed structure includes a joint located on the upright or on the sliding block that includes two distinct jointing points, so that a side of a deployment triangle, which is jointed at the distinct jointing points, constitutes a rigid guiding triangle defined by these two distinct jointing points and by a third joint.

대표청구항 ▼

The invention claimed is: 1. A collapsible structure, comprising: an upright; a sliding block sliding on the upright along an axis (X-X'), of the upright such that the sliding block does not rotate around the axis; at least one collapsible leg unfolding from a collapsed position near the upright to

The invention claimed is: 1. A collapsible structure, comprising: an upright; a sliding block sliding on the upright along an axis (X-X'), of the upright such that the sliding block does not rotate around the axis; at least one collapsible leg unfolding from a collapsed position near the upright to an unfolded position distanced from the upright; at least one jointed structure for the unfolding of the at least one collapsible leg comprising, a jointed deployment triangle, the deployment triangle comprising: a first side attached to the upright between a first joint located on the upright and a second joint located on the sliding block; a second side jointed on the sliding block by the second joint; a third side jointed on the upright by the first joint and on the second side by a third joint; wherein the first joint or the second joint comprises two distinct jointing points, so that the side of the side of the deployment triangle which is jointed at the two distinct points constitutes a rigid guiding triangle, defined by these two points and by the third joint. 2. A structure according to claim 1, wherein the rigid guiding triangle comprises three side members, wherein one of said side members coincides with the hinge axis according to a direction (Y-Y') of the rigid guiding triangle and wherein the other two side members are fixed with respect to each other. 3. A structure according to claim 2, wherein said direction (Y-Y') is inclined compared to the horizontal, and said direction (Y-Y') makes with said axis (X-X') an angle of less than 90��. 4. A structure according to claim 1, wherein the surface delimited by the vertices of the guiding triangle is a solid surface. 5. The structure according to claim 4, wherein the solid surface is a plate. 6. A structure according to claim 1, wherein the surface delimited by the vertices of the guiding triangle is a cut-out surface. 7. A structure according to claim 1, wherein the leg is integral to the second side of the deployment triangle. 8. A structure according to claim 1, wherein the leg is jointed to the third side of the deployment triangle or at an extension of this side, and wherein a supporting part is jointed between (i) the sliding block and (ii) an intermediary point of the leg. 9. A structure according to claim 8, wherein, in the unfolded position, the supporting part rests on part of the guiding triangle. 10. A structure according to claim 1, wherein the at least one collapsible leg comprises two collapsible legs, wherein the structure further comprises retractable means for providing rigidity that joins, the two legs, and the structure is collapsible through the action of a connection support jointed to the sliding block. 11. A structure according to claim 10, wherein the means for providing rigidity, in the unfolded position, are adapted to one of: support a pushchair seat or serve as a footrest. 12. A structure according to claim 10, wherein the sliding block is adapted to support a pushchair backrest. 13. A structure according to claim 1, wherein one or more of the rods is/are equipped with a spring mechanism, linking the sliding block to the central upright, so that the unfolding of the structure, or its collapsing, is done automatically, by simple unlocking of the sliding block. 14. The structure according to claim 1, wherein the at least one collapsible leg comprises a plurality of collapsible legs, and the at least one jointed structure comprising a plurality of jointing structures.