Luggage case capable of safely climbing stair

Abstract

The invention relates to luggage cases with use convenience and safety design, and aims at providing a luggage case which is convenient to walk on stairs. The luggage case capable of safely climbing stair comprises a case body, a case cover, cushioning wheel components and a three-dimensional vertical lining rack, wherein a pull handle fixing base is arranged at the upper part of the case bottom; three-dimensional concave angles are symmetrically arranged at two ends below the bottom of the case body; each three-dimensional concave angle comprises three planes which are perpendicular to one another, namely, a concave angle right plane, a concave angle left plane and a concave angle vertical plane; as improvement, the three-dimensional vertical lining rack is positioned between two three-dimensional concave angles; an outer optical shaft stud on a cushioning optical shaft sequentially penetrates through a concave vertical plane through hole, a lining rack through hole, a back conical flat pad and an anti-loosing screw nut in fastening match; the cushioning wheel components comprise the cushioning optical shafts, swing arm shafts, swinging bodies, three-wheel foot stools, cannon pinion shafts, rolling cannon pinions, left conical springs and right conical springs; and the rolling cannon pinions can both rotate in a rotation manner taking the cannon pinion shafts as the centers, and turn and roll along with the three-wheel frame fork taking the swing arm shafts as the centers.

Description

technical field [0001] The invention relates to the convenient use and safety design of a bag, in particular to a safe stair-climbing bag. Background technique [0002] In daily life, people cannot do without a bag when they go out, and the bag can be used to place documents, money and things. Although today's high-rise residential buildings are equipped with elevators, the problem of "difficulty going upstairs" that people face with carrying heavy objects in residential buildings with three to seven floors has not been effectively solved. For people who go out on a long journey, sometimes the materials and articles in the luggage can be very heavy, and when people go home tired after traveling or shopping, the problem of carrying the luggage upstairs with great difficulty has not been effectively solved. Existing suitcase is provided with walking wheel at the bottom, and has retractable pull rod, facilitates it to walk on flat ground, but when going up and down stairs or e...

AI Technical Summary

Problems solved by technology

Although today's high-rise residential buildings are equipped with elevators, the problem of "difficulty going upstairs" that people face with carrying heavy objects in residential buildings with three to seven floors has not been effectively solved.

For people who travel far away, sometimes the materials and items in the luggage will be very heavy. When people go home tired after traveling or shopping, the problem of carrying the luggage upstairs has not been effectively solved.

Existing suitcase is provided with walking wheel at the bottom, and has retractable pull rod, facilitates it to walk on flat ground, but when going up and down stairs or encountering obstacle, it is easy to separate the bottom of suitcase from stair step or obstacle. friction, thereby causing damage to the suitcase, or the suitcase can only be lifted, causing the suitcase to lose its portability and labor-saving effect

Especially in special environments such as islands, when the lighting conditions are poor, it is difficult to see the items in the bag, which brings inconvenience to people

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