| CPC A47B 43/00 (2013.01) [B62B 3/02 (2013.01)] | 10 Claims |
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1. A kind of foldable carrying equipment comprising:
four legs;
at least two platforms disposed vertically and each of the platform having two loading plates adjacent to each other and a plurality of pivot plates; each of the loading plates including a first side, a second side opposite to the first side, an inner side, and an outer side; the two outer sides of the two adjacent loading plates away from each other and the two inner sides of the two adjacent loading plates close to each other; two ends of the outer side of the loading plate pivotally connected to the legs to form outer pivot points correspondingly; a junction between the inner side and the first side of the loading plate pivotally connected to the pivot plate to form a first pivot point and a gap formed between the two inner sides of the loading plates; thus the inner side of the loading plate able to be either moved upward and pivotally rotated to a folded position, or moved downward and pivotally rotated to an extended position;
a support linkage rod set disposed on the second side of the loading plate and having a support rod, two linkage rods, and a slider; the support rod vertically arranged and pivotally connected to the inner sides of the loading plates of the platform; the two linkage rods disposed in a V-shape and each of the linkage rods provided with a first end portion and a second end portion; the first end portion pivotally connected to a position between the outer side and the inner side of the loading plate of the platform; the slider slidably moved along the support rod and operable to be loosened from or fastened on the support rod; the second end portion of the linkage rod pivotally connected to and positioned on the slider; the slider being forced to slide along the support rod and further drive the loading plates of the platform to be pivotally rotated and switched between the folded position and the extended position when a force applied to a top end of the support rod for vertical operation;
wherein the support rod is provided with at least two pivot pieces each of which having two second pivot points; the pivot piece is disposed on a position at the same level as the corresponding platform; a junction between the inner side and the second side of the loading plate is pivotally connected to the pivot piece to form the second pivot point; the two second pivot points are spaced apart due to the gap between the two inner sides of the loading plates; thereby the junction between the inner side and the first side of the loading plate, and the junction between the inner side and the second side of the loading plate are respectively able to be pivotally rotated around the first pivot point and the second pivot point synchronously, and thus switched between the folded position and the extended position;
wherein an outer stopper having a plurality of stopping members arranged at the outer sides of the loading plates of the platform away from each other or the corresponding legs; the adjacent loading plates are stopped and limited by the stopping members, without being rotated to a valley-folding direction when the loading plate is pivotally rotated downward to the extended position; wherein a first inner stopper having a plurality of first limit bumps, a plurality of second limit bumps, and a plurality of limit blocks; the first limit bump is projecting from an area around the first pivot point on an inner side of the pivot plate and each of the first limit bumps is provided with a first limit wall formed on each of two sides of the first limit bump; the second limit bump is projecting from an area around the second pivot point on an inner side of the pivot piece and each of the second limit bumps is provided with a second limit wall formed on each of two sides of the second limit bump; the limit blocks are disposed on the first pivot point and the second pivot point of the loading plate; each of the limit blocks is provided with a limit lock wall; when the loading plate is pivotally rotated from the folded position to the extended position, the limit lock walls are abutting against and stopped by the first limit wall of the pivot plate and the second limit wall of the pivot piece correspondingly.
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