Structure of rail

Abstract

A rail includes a frame and a resilient web. The frame includes a plurality of frame bars. The resilient web surrounds and is mounted to the frame bars to form a resilient central web of stretchability among the frame bars. As such, a safe and comfortable rail is constructed.

1 . A rail comprising:
 a frame comprising a plurality of frame bars; and   a resilient web surrounding and mounted to the frame bars to form a resilient central web of stretchability among the frame bars,   whereby a safe and comfortable rail is constructed.   
   
   
       2 . The rail as claimed in  claim 1  further comprising a corner member arranged between adjacent frame bars. 
   
   
       3 . The rail as claimed in  claim 1  further comprising an extension device arranged in a middle section of a frame bar of the frame for selectively extending/contracting the frame and wherein a transverse bar is mounted to a joint of a lower one of the frame bars of the frame by a collapse device, the collapse device comprising a connection block, which, together with a frame bar positioned thereabove, is operatively coupled to an operation ring, the frame positioned thereabove containing therein a spring and a stop block operatively coupled to the operation ring so as to form a three-dimensional side-bed rail structure. 
   
   
       4 . The rail as claimed in  claim 2  further comprising an extension device arranged in a middle section of a frame bar of the frame for selectively extending/contracting the frame and wherein a transverse bar is mounted to a joint of a lower one of the frame bars of the frame by a collapse device, the collapse device comprising a connection block, which, together with a frame bar positioned thereabove, is operatively coupled to an operation ring, the frame positioned thereabove containing therein a spring and a stop block operatively coupled to the operation ring so as to form a three-dimensional side-bed rail structure. 
   
   
       5 . The rail as claimed in  claim 1  further comprising retention devices provided at opposite ends of one lateral-side frame bar of the frames and upper and lower retention devices provided on an opposite lateral-side frame bar, the upper retention device comprising an operation handle for causing the retention device to extend outward for tightly engaging an external wall, the lower retention device comprising a slide block, which is operatively coupled to a spring for causing sliding of the retention device to engage the external wall, whereby a three-dimensional door-frame rail structure is provided. 
   
   
       6 . The rail as claimed in  claim 2  further comprising retention devices provided at opposite ends of one lateral-side frame bar of the frames and upper and lower retention devices provided on an opposite lateral-side frame bar, the upper retention device comprising an operation handle for causing the retention device to extend outward for tightly engaging an external wall, the lower retention device comprising a slide block, which is operatively coupled to a spring for causing sliding of the retention device to engage the external wall, whereby a three-dimensional door-frame rail structure is provided. 
   
   
       7 . The rail as claimed in  claim 1 , wherein the resilient web comprises a resilient fabric that is made of resilient yarns and nylon yarns. 
   
   
       8 . The rail as claimed in  claim 7 , wherein the nylon yarn is formed by entangling a plurality of filaments. 
   
   
       9 . The rail as claimed in  claim 7 , wherein the resilient yarn and the nylon yarn that form the resilient web is of a ratio of 15:85 with a tolerance of ±2%. 
   
   
       10 . The rail as claimed in  claim 7 , wherein the resilient yarn has a diameter selected from a group consisting of 30, 40, 55, and 70 denier. 
   
   
       11 . The rail as claimed in  claim 7 , wherein the nylon yarn has a diameter selected from a group consisting of 30, 40, 55, 77, 140, 210, 280, 560, and 840 denier. 
   
   
       12 . The rail as claimed in  claim 7 , wherein the resilient fabric is made by warp knitting. 
   
   
       13 . The rail as claimed in  claim 1 , wherein the resilient web is made in the form of a net for air permeability. 
   
   
       14 . The rail as claimed in  claim 7 , wherein the resilient web is made in the form of a net for air permeability.