Rectangular bag

Abstract

A rectangular bag includes a bag body, a first zipper, and a strap. The bag body has a left side panel with a first opening provided thereon, a right side panel, and a top panel connected to the left side panel and the right side panel with two ends thereof. The first zipper includes a first chain provided on a peripheral edge of the first opening, and a first slider provided on the first chain. The first chain has a first end and a second end, wherein the first end is closer to the top panel than the second end is. The first opening is sealed when the first slider is located at the first end, and is unsealed when the first slider is located at the second end. The strap is connected to the first slider and the right side panel with two ends thereof respectively.

What is claimed is: 
     
         1 . A rectangular bag, comprising:
 a bag body having a top panel, a left side panel, and a right side panel, wherein the left side panel and the right side panel are provided on opposite sides; two ends of the top panel are respectively connected to the left side panel and the right side panel; a first opening is provided on the left side panel;   a first zipper comprising a first chain and a first slider, wherein the first chain is provided on a peripheral edge of the first opening, and has a first end and a second end; the first end of the first chain is closer to the top panel than the second end thereof is; the first slider is provided on the first chain, wherein the first slider is movable along the first chain; when the first slider is located at the first end of the first chain, the first opening is sealed by the first chain; when the first slider is located at the second end of the first chain, the first opening is unsealed; and   a strap, wherein an end of the strap is connected to the first slider, and another end thereof is connected to the right side panel.   
     
     
         2 . The rectangular bag of  claim 1 , wherein a second opening is provided on the bag body; the second opening extends from the right side panel to the top panel; the rectangular bag further comprises a second zipper; the second zipper comprises a second chain and a second slider; the second chain is provided on a peripheral edge of the second opening, and has a first end and a second end; the first end of the second chain is located on the top panel, and the second end of the second chain is located on the right side panel; the second slider is provided on the second chain, and is movable along the second chain; when the second slider is located at the first end of the second chain, the second opening is sealed by the second chain; when the second slider is located at the second end of the second chain, the second opening is unsealed. 
     
     
         3 . The rectangular bag of  claim 2 , wherein the second opening communicates with the first opening, and the first end of the first chain is connected to the second end of the second chain. 
     
     
         4 . The rectangular bag of  claim 1 , further comprising a first fastener and a second fastener, which are adapted to be engaged with each other, wherein the first fastener is provided on the first slider; the second fastener is provided on the left side panel, and is located on one side of the first chain. 
     
     
         5 . The rectangular bag of  claim 1 , further comprising a first connector and a plurality of second connectors, wherein the first connector is connected to the first slider, and is adapted to be detachably engaged with one of the second connectors; the second connectors are provided on the left side panel in a longitudinal direction of the first chain, and are arranged at regular intervals on one side of the first chain. 
     
     
         6 . The rectangular bag of  claim 1 , wherein the first end of the first chain is apart from the top panel; a shortest distance L 1  is defined between the first end of the first chain and the top panel, and a shortest distance L 2  is defined between the top panel and a junction of the strap and the right side panel, satisfying the following condition:
   L 2 >L 1 . 
 
     
     
         7 . The rectangular bag of  claim 6 , wherein the bag body has a bottom panel provided on a side opposite to the top panel; a shortest distance L 3  is defined between the bottom panel and a junction of the strap and the right side panel, satisfying the following condition:
   L 2 >L 3 >L 1 . 
 
     
     
         8 . The rectangular bag of  claim 7 , wherein a shortest distance L 4  is defined between the top panel and the bottom panel, satisfying the following condition:
   L 1 ≤⅕ L 4 .
 
 
     
     
         9 . The rectangular bag of  claim 8 , wherein the shortest distances L 3  and L 4  satisfy the following condition:
   L 3 >⅕ L 4 .
 
 
     
     
         10 . The rectangular bag of  claim 9 , wherein the shortest distances L 3  and L 4  satisfy the following condition: 
       ti L 3 ≤½ L 4 .