US 12,753,041 B2Granted

Unfolding device and unfolding method

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsKazumi Serizawa, Naoyuki Taguri, Kazuhisa Saiki, Kenta Sawano, Taizan Ogata, Shinta Yamauchi, Keiko Koyama, Kazuya Hasunuma

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Abstract

The unfolding device includes a frame that provides a space for placing an empty box, a plurality of stress concentrating members that unfolds a plurality of corners of the empty box, a plurality of movable portions, and a power transmission portion that transmits power for moving the stress concentrating member via the movable portion. The stress concentrating member is brought into contact with the inside of the empty box from the opening side of the empty box, thereby placing the empty box. The power transmission portion transmits, to the stress concentrating member, power for moving the stress concentrating member so as to bring the stress concentrating member into contact with the corner. The power transmission portion transmits the power to the stress concentrating member so that the stress concentrating member unfolds the corner by tearing and opening the corner.

Claims6

Dependent claims

An unfolding device configured to unfold an empty box into a single cross-shaped flat sheet, the unfolding device comprising:

a placement frame that provides a placement space for placing the empty box that is open before unfolding;
an operation lever having a first rack;
a gear meshing with the first rack;
a shaft penetrating a center of the gear;
a weight attached to the gear or the shaft, the weight being configured to rotate the gear by descending in a vertical direction;
a first member including a reverse slope blade that protrudes outward as the blade gets closer to a top of the blade, the blade being configured to unfold a corner of the empty box from an inner side surface of the empty box;
and
a second member that is attached to the first member and has a second rack meshing with the gear, wherein:
due to the weight descending, the second member moves the first member toward an inside direction of the placement space;
and
by operation of the operation lever so that the weight ascends, the second member moves the first member so that the blade unfolds the corner.

8 more elements

Dependencies are inferred from the claim text.