To provide a bag with roller guide that alleviates the energy required for going up and down the stairs holding a heavy bag.
A roller guide is made by placing a preset roller 5 on an shaft bearing on a guide base 3 and combining a guide body 4 that nearly covers it. The roller guides are fixed onto the outer bottom part of the bag in a fan-shape and at a same angle from the center of the bag as a pivot when pulling the bag using casters 17 and a handle 13. The bag is moved up and down from the flat ground to a step and from the step to another step by rotating the roller 5 and by the two loading contacts of the bag made by the corner of the step and the roller 5 moving spirally. Thereby the energy required for moving up and down the stairs is alleviated.
JP2015080527 | BAG COVER |
WO/2018/130794 | FOLDING PIECE OF LUGGAGE |
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