Pull-rod schoolbag

Abstract

The invention discloses a pull-rod schoolbag. Two outer tubes are evenly distributed on the back of a bag body, inner rods are respectively arranged in the outer tubes, lower springs are respectivelyconnected between lower end faces of the inner rods and the bottom surfaces of the outer tubes, the upper ends of the inner rods are respectively connected with outer gear rings through hinges, innergear shafts are respectively meshed in the outer gear rings, an upper rotating shaft is jointly connected to the centers of the inner gear shafts, the two ends of the upper rotating shaft are respectively arranged on the outer sides of the inner gear shafts, the two ends of the upper rotating shaft are respectively connected with the lower ends of elastic arc plates, the upper ends of the elasticarc plates are both connected with an upper horizontal rod, concave clamping grooves are respectively arranged on lateral walls of the rear sides of the outer tubes, the lower parts, on the outer sides of the outer tubes, of the back of the bag body are respectively connected with the lower ends of vertical shafts through a lower rotating shaft, horizontal shafts are receptively connected to the left side and the right side of the vertical shaft, the horizontal shafts extend into the insides of the two sides of an opening shaft sleeve through openings of the opening shaft sleeve, and the upperends of the vertical shafts are respectively connected with middle rotating wheels through middle rotating shafts. The pull-rod schoolbag has the advantages of convenience in use, good flexibility and good buffer damping effect.

Description

technical field [0001] The invention relates to the technical field of school supplies, in particular to a trolley schoolbag. Background technique [0002] At present, with the development of student supplies technology, more and more trolley schoolbags are used. [0003] Most of the existing trolley schoolbags adopt the structure in which the back of the schoolbag is sleeved on the trolley through a strap, and most of them have the problems of inconvenient use and poor flexibility. Contents of the invention [0004] The purpose of the present invention is to provide a trolley school bag to solve the problems of inconvenient use and poor flexibility existing in the prior art. [0005] In order to achieve the above object, the method of the present invention provides a trolley schoolbag, the trolley schoolbag includes a bag body, two outer tubes are evenly distributed on the back of the bag body, inner rods are respectively arranged in the outer tubes, and the lower end su...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a trolley school bag to solve the problems of inconvenient use and poor flexibility in the prior art

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