School bag

Abstract

A bookbag consists of a shoulder tape and a bag; the upper part of the longitudinal center line of the back surface of the bag is provided with a supporting element, the lower part is provided with a connecting element; wherein the shoulder tape is made by connecting flexible materials and non-flexible materials, that is, two ends and the center of the shoulder tape are provided with a section of the flexible materials; the ends of the shoulder tape is provided with a connecting element; through the supporting element of the back surface of the bag, the shoulder belt is connected with the connecting element of the back surface of the bag by the connecting element of the ends of the shoulder belt to form a ring. The tensile force of the shoulder tape for the shoulder is concentrated on the longitudinal center line of the back surface of the bag, through the effect of the active force and the reacting force, the shoulder tape draws two shoulders to extend backward, therefore the aim of preventing backbone deforming can be achieved for lifting the chest and straight back of users. The shoulder tape is taken down from the bag, the shoulder tape is connected to an elastic ring by the connecting element of the end part, thereby being a body builder of tensile force.

Description

Technical field [0001] The invention relates to a school bag, in particular to a school bag with a double shoulder for preventing spine deformation. Background technique [0002] The State Intellectual Property Office of the People's Republic of China granted a schoolbag utility model patent (patent number zl200520122090.8). It consists of a bag and shoulder straps; two shoulder straps are symmetrically connected to a shoulder strap connector to form two shoulder strap loops; below the shoulder strap connector, there is a connector connecting the shoulder strap connector to the upper middle of the back of the bag Connection; In this way, the two shoulder straps are symmetrically connected to a shoulder strap connector, and the pulling force formed by the shoulder straps on the user's shoulders is concentrated backward at the shoulder strap connection, and the purpose of preventing spinal deformation is achieved through the concentration of this force. Due to the fact that t...

AI Technical Summary

Problems solved by technology

This kind of school bag is because the shoulder strap connector is on the upper back of the bag, so the shoulder strap ring is also on the upper back of the bag. It is inconvenient and uncomfortable for the user to carry the school bag, and the function is also less.

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