Draw-bar box wheel collection and ejection device

Abstract

The invention provides a draw-bar box wheel collection and ejection device, which comprises a framework, a driving pulling sheet, a pulling sheet spring, a lock buckle, a lock buckle spring, a piston pin, a piston case, a piston spring, a piston back cover, a wheel fork, a support rod, wheels, a wheel fork rotating shaft and a framework back cover. The whole body is divided into five sub assembly bodies according to the functions; the framework and the framework back cover form a framework assembly body with the function of providing a support base body for the whole assembly body; the driving pulling sheet and the pulling sheet spring form a driving pulling sheet assembly body with the function for providing the initial starting actions of the wheel ejection; the lock buckle and the lock buckle spring form a lock buckle assembly body with the function of locking the wheels when the wheels are collected; the piston pin, the piston case, the piston spring and the piston back cover form a piston assembly body with the function of providing torque for the wheel ejection; the wheel fork, the support rod, the wheel and the wheel fork rotating shaft form a wheel assembly body which is a final execution mechanism. The wheels are ejected out through pushing the driving pulling sheet; the wheel collection action can be completed through inwards and slightly pushing the wheels by foot.

Description

technical field [0001] The invention relates to a roller mechanism, in particular to a wheel retractable and pop-up structure of a trolley case. Background technique [0002] The trolley case refers to a suitcase with a trolley and a roller, which is widely used because it is easy to use, and it is easy to carry clothes and the like for travel and going out. The trolley case can be carried or dragged. The wheels of the trolley case we usually use are basically located at the bottom of the case. The type of accessories of the trolley case determines the quality and use of the trolley case. At present, the common wheels of the trolley case are divided into one-way wheels and universal wheels, which are respectively suitable for uneven roads and flat roads. [0003] In order to pull the trolley case easily by tilting the case, currently the wheels of the trolley case are protruding from the outside of the case, but the wheel structure design of the trolley case has great defec...

AI Technical Summary

Problems solved by technology

First of all, the width of the space occupied by the raised wheels is greater than the width of the box body itself, so that the box body cannot be placed close to the inner wall of the chamber, or there is a gap between multiple trolley boxes when they are placed close together, resulting in very difficult placement of the trolley box. Instability; secondly, when many four-wheeled trolley cases are placed vertically, the wheels will roll on the shaking car board or cabin, lacking enough friction to keep the case relatively stationary; also, the exposed wheels are consigned or transferred During the process, the wheels are very easy to collide with external objects and cause the wheels to fall

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