Pulling rod linkage apparatus

Abstract

The invention discloses a pulling rod linkage apparatus, which comprises a handle, a pulling rod, an inner pipe, a gear fixation device, a wheel and a bracket structure, wherein the bracket structure comprises an upper connection member, an outer bushing A, an outer bushing B and a lower connection member, the upper connection member and the lower connection member are respectively fixed on the outer bushing A and the outer bushing B, the four parts such as the upper connection member, the lower connection member, the outer bushing A and the outer bushing B are fixedly connected to form the integration, the pulling rod is slidably arranged inside the outer bushing B in a sleeve manner, the inner pipe is slidably arranged inside the outer bushing A in a sleeve manner, the wheel is arranged on the lower end of the inner pipe, the gear fixation device is fixed on the bracket structure and is positioned between the adjacent outer bushing A and the outer bushing B, a gear is arranged inside the gear fixation device and is rotatably fixed inside the gear fixation device, the pulling rod is provided with a gear rack B engaged with the gear, and the inner pipe is provided with a gear rack A engaged with the gear. According to the present invention, with the pulling rod linkage apparatus, the height between the pulling rod box and the ground can be increased, such that the passing-through possibility of the pulling rod box is substantially enhanced, and the probability of the pollution risk of the pulling rod box can be reduced.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a pull rod linkage device. Background technique [0002] Trolley devices are widely used in daily life, and the most common ones are trolley bags. At present, the trolley case and bag on the market have no transmission relationship between the trolley device and the wheels, that is to say, the movement of the trolley does not affect the movement of the wheels. Because the wheels of the trolley bags on the market cannot be raised and lowered, in the process of pulling the trolley bags, due to the low ground clearance of the bottom of the trolley bags, it is easy to encounter obstacles during walking, and the bags are easily polluted or even damaged. Contents of the invention [0003] The purpose of the present invention is to provide a tie rod linkage device to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present inven...

AI Technical Summary

Problems solved by technology

Because the wheels of the trolley bags on the market cannot be raised and lowered, in the process of pulling the trolley bags, because the bottom of the bags is low from the ground, it is easy to encounter obstacles during walking, and the bags are easily polluted or even damaged

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