Multi-purpose trolley case that can be climbed

Abstract

The invention discloses a ladder-climbable multi-purpose trolley case, which comprises a case body, two shock-absorbing wheels which are symmetrically located on both sides of the case body and can extend out of the case body for climbing ladders, and wind around the front and rear shock-absorbing wheels. The track and the power assembly used to drive the two shock absorbing wheels to extend or retract the box, the power assembly includes a crank connected to the central shaft of each shock absorbing wheel through a connecting rod, and a first gear connected to one end of the central shaft and the crank , a second gear that is externally meshed with the first gear, a rack that is meshed with the second gear, and an operating component for pulling the rack to move linearly. The action of the operating component of the present invention pulls the rack to move, the rack drives the second gear to rotate, and meshes with the first gear to drive it to rotate, thereby driving the crank and the connecting rod to rotate. When the crank and the connecting rod do not overlap, the damping wheel and The caterpillar is fully stretched out of the box body and can be used for climbing, and when the crank and the connecting rod are both in line and coincident, the shock absorbing wheel and the track are fully retracted into the box body.

Description

technical field [0001] The invention belongs to a trolley case, in particular to a ladder-climbable multi-purpose 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, a crawler-type trolley case has its tracks embedded in the largest surface, the two tracks are similar, and the contact surface is not enough. On the surface, it is easy to slide during exercise, which increases frictional resistance; there is also a trolley case that goes up stairs through auxiliary casters, the direction of force needs to be controlled, and...

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, a crawler-type trolley case has its tracks embedded in the largest surface, the two tracks are similar, and the contact surface is not enough. surface, it is easy to slide during exercise, which increases frictional resistance; there is also a trolley box that goes up stairs through auxiliary casters, the direction of force needs to be controlled, and at the same time, relatively large vibrations and sounds are prone to occur during exercise

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