Telescopic draw-bar box

Abstract

The invention relates to a trolley case, and specifically discloses a retractable trolley case, which includes a case cover, an outer case body, an inner case body, an outer case body assembly, an inner case body assembly, a pull rod assembly, pulleys and other parts; The outer box assembly includes gears, sliders, and hinged connection devices; the inner box assembly includes racks, guide rods, and slide rails; the pull rod assembly includes handles, pull rods, connecting rods, pulleys, and hinged connection devices. The invention provides a retractable trolley case, which has a simple structure and is convenient to use, and can greatly increase the volume adjustment range of the trolley case, thereby bringing convenience to life.

Description

technical field [0001] The invention relates to the technical field of trolley cases, in particular to a retractable trolley case. Background technique [0002] The trolley case has become an indispensable travel tool for people to travel and travel because it is easy to carry and store items. There are various forms and sizes of trolley cases on the market, which provides convenience for people to choose, but also brings some Troubled, buying a small trolley case is more convenient to carry, but when you carry a lot of things at a time, it will cause troubles that you can’t put it down. Buying a large trolley case can carry more items, but when you travel with fewer items, take one with you Large suitcases are too troublesome; and the trolley of the traditional trolley case is mainly extended directly and then tilted to drag the trolley case. Although this is convenient, it will cause great damage to the trolley under long-term consignment of heavy loads , Over time, the t...

AI Technical Summary

Problems solved by technology

[0002] The trolley case has become an indispensable travel tool for people to travel and travel because it is easy to carry and store items. There are various forms and sizes of trolley cases on the market, which provides convenience for people to choose, but also brings some Troubled, buying a small trolley case is more convenient to carry, but when you carry a lot of things at a time, it will cause troubles that you can’t put it down. Buying a large trolley case can carry more items, but when you travel with fewer items, take one with you Large suitcases are too troublesome; and the trolley of the traditional trolley case is mainly extended directly and then tilted to drag the trolley case. Although this is convenient, it will cause great damage to the trolley under long-term consignment of heavy loads , over a long period of time, there will be a phenomenon that the tension rod fails to expand and the tension rod becomes loose.

[0003] In the existing life, there are also variable-volume trolley cases. Generally, a part of the vertical wall of the trolley case is put away through a zipper, and then released when necessary. However, this method is inconvenient to operate when adjusting the volume of the trolley case. Pull the zipper a full turn, and the volume adjustment range of the trolley case is very small

[0004] Therefore, the trolley case in the prior art has the problems of inconvenient volume adjustment and damage to the pull rod of the trolley case

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