Draw bar packback

Abstract

The invention relates to a draw bar packback comprising a draw bar sleeve arranged inside bottom of the packback, a draw bar arranged in the draw bar sleeve and packback belts arranged at the left side and right side of the packback, wherein the lower end of the draw bar is provided with a cross bar vertical to the draw bar, the left end part and right end part of the cross bar are respectively fixedly connected with the lower ends of the packback belts at the left side and the right side, the other ends of the packback belts at the left side and the right side respectively pass through lower packback belt holes at the bottoms of the left packback and the right packback and then passes through corresponding upper packback belt holes so as to be respectively clamped and fixed together with a left strap pin and a right strap pin, and the draw bar draws the cross bar while lengths of the packback belts arranged at the left side and the right side are released. The draw bar is used for pulling the cross bar and driving the packback belts to be attracted or released, the upper ends of the packback belts are connected with the upper packback belt holes by virtue of character buttons, the length of the packback belts can be regulated, and the abrasion and pollution caused by overlong external packback belts in a dragging and pulling process are avoided. The draw bar packback provided by the invention has the advantages of being beneficial to reduction of the volume and weight of the draw bar packback, being suitable for children to carry, being flexible and convenient to operate and being novel and fashion in appearance.

Description

technical field [0001] The invention relates to a backpack, in particular to a trolley backpack with coordinated backpack straps and a trolley. Background technique [0002] At present, the bags that can be dragged on the shoulders and on the ground are convenient for carrying more and heavier items when traveling. You can use the trolley-type luggage to drag and walk to reduce the load. This kind of double-strap trolley backpack has begun to be used by middle and primary school students. promotion. However, many defects in use have been gradually discovered during use. For example, when this kind of backpack is dragged on the ground, the backpack strap cannot automatically shrink and is easy to rub on the ground, causing the strap to be polluted and worn. Therefore, it must be removed or tied to the backpack. In fact, this is complicated and cumbersome for elementary school students, and lacks practicality. [0003] CN200620083242.2 proposes a detachable trolley backpack ...

AI Technical Summary

Problems solved by technology

However, many defects in use have been gradually discovered during use. For example, when this kind of backpack is dragged on the ground, the backpack strap cannot automatically shrink and is easy to rub on the ground, causing the strap to be polluted and worn. Therefore, it must be removed or tied to the backpack. In fact, this is complicated and cumbersome for primary school students, and lacks practicality

[0003] CN200620083242.2 proposes a detachable trolley backpack for children. The backpack and the trolley are movably connected together by a buckle. The beam on the upper part of the trolley is movably fixed on the backpack by the fixing belt on the back of the backpack. When using the trolley, it is fixed on the backpack. , can be removed when not in use, loading and unloading the trolley is much more complicated than taking off the backpack strap or binding it to the backpack, and it lacks practicality. This structure is not suitable for primary and middle school students.

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