Crawler type trolley case

Abstract

The invention discloses a crawler-type ladder-climbing trolley case which comprises a case body, climbing assemblies left-and-right symmetrically located in the lower part of the back surface of the case body and capable of stretching out of the case body so as to be used for climbing a ladder, and power assemblies for driving the climbing assemblies to stretch out or retract into the case body. Each climbing assembly comprises a pair of rolling wheels arranged up and down, connecting rods for connecting the rolling wheels, and crawlers wound on the upper and lower rolling wheels; and each power assembly comprises a lifting pin type telescopic assembly with one end being connected with the corresponding rolling wheel, a sliding block connected with the other end of each lifting pin type telescopic assembly, and an auxiliary spring with one end being abutted against each sliding block and the other end being fixed to the case body. According to the crawler-type ladder-climbing trolley case provided by the invention, the lifting pin type telescopic assemblies drive the climbing assemblies to retract into and stretch out of the case body; when the climbing assemblies are required to be used, the lifting pin type telescopic assemblies are utilized for ejecting the climbing assemblies out of the case body; and when no climbing is required, the lifting pin type telescopic assembliesare utilized for retracting the climbing assemblies into the case body, so that the appearance of the case body cannot be influenced.

Description

technical field [0001] The invention belongs to a trolley case, in particular to a crawler type ladder trolley case. Background technique [0002] As a means of transportation, the trolley case is a must for people to travel. Currently, the types of trolley cases on the market are quite single, and they lack innovative breakthroughs in functions. In terms of climbing stairs, most trolley cases lack this function, which makes users quite strenuous when encountering ladder barriers. A small number of trolley cases produced to solve this problem have various designs, but they all have some defects; for example, some ladder trolley cases use external equipment, such as putting the trolley case on a simple cart to achieve climbing. Function, another kind of ladder trolley box is to install crawlers on the back of the box, and realize the function of adapting the box to the slope of the stairs by bending the pull rod when climbing the ladder, but its structure is very complicated...

AI Technical Summary

Problems solved by technology

[0002] As a means of transportation, the trolley case is a must-have item for people to travel. At present, the types of trolley cases on the market are quite single, and there is a lack of innovative breakthroughs in functions.

In terms of climbing stairs, most trolley cases lack this function, which makes users quite strenuous when encountering ladder barriers

A small number of trolley cases produced to solve this problem have various designs, but they all have some defects; for example, some ladder trolley cases use external equipment, such as putting the trolley case on a simple cart to achieve climbing. Function, another kind of ladder trolley box is to install crawlers on the back of the box, and realize the function of adapting the box to the slope of the stairs by bending the pull rod when climbing the ladder, but its structure is very complicated, the overall structure is heavy, and it is not easy to carry. Convenient and relatively cumbersome to assemble

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