Air cushion pad

Abstract

An air cushion pad includes at least two sheet members, which are made of resilient materials. Each sheet member forms a plurality of hollow tubes projecting therefrom and the tubes are connected to each other by a substantially flat plate. The tubes of one sheet member and the tubes of the other sheet member are alternately fit to each other in an opposing manner to form the air cushion pad. When an external impact force is applied in a top down manner, the air cushion pad absorbs the impact force and undergoes sideways deformation so as to convert the impact force into a transverse to thereby realize shock absorption and eliminate damage caused by downward action of the impact force to provide the function of protection.

1 . An air cushion pad, comprising an upper sheet member and a lower sheet member, characterized in that:
 the upper sheet member is made of a resilient material and forms a plurality of hollow tubes projecting therefrom, the tubes being connected by a plate; and   the lower sheet member is made of a resilient material and forms a plurality of hollow tubes projecting therefrom, the tubes being connected by a plate;   wherein the hollow tubes of the upper sheet member and the hollow tubes of the lower sheet member are inter-fit to each other in an opposing manner.   
     
     
         2 . The air cushion pad according to  claim 1 , wherein the upper sheet member comprises a curved sheet member having a concave curved surface from which the tubes vertically extend downward and wherein the lower sheet member comprises a curved sheet member having a convex curved surface from which the tubes vertically extend upward. 
     
     
         3 . The air cushion pad according to  claim 2 , wherein when the tubes of the upper sheet member and the lower sheet member are inter-fit to each other, circumferential edges of the concave curved surface and the convex curved surfaces abut each other to allow for sealing to each other by high-frequency machining, ultrasonic plastic fusion operation, pressurized thermal bonding, or application of adhesives. 
     
     
         4 . The air cushion pad according to  claim 1 , wherein the tubes of the upper sheet member, the intermediate lining layer, and the lower sheet member are selectively provided with a lid made of a rigid material. 
     
     
         5 . The air cushion pad according to  claim 1 , wherein the tubes have tubular walls between which connection ribs are arranged, each of the connection ribs having a top having a central portion forming a notch, the connection ribs being arranged at a 90 degree angular interval around each of the tubes. 
     
     
         6 . The air cushion pad according to  claim 1 , wherein the tubes have tip end positioned against opposite sheet member. 
     
     
         7 . The air cushion pad according to  claim 1 , wherein the tubes of the upper sheet member, the lower sheet member, and the intermediate lining layer are selectively different in length. 
     
     
         8 . The air cushion pad according to  claim 1 , wherein the tubes have tip ends that are of a predetermined shape, including a dome shape, a flat configuration, and an inwardly recessed configuration. 
     
     
         9 . The air cushion pad according to  claim 1 , wherein the cushion pad comprises tubes that are locally distributed in large zones and tubes that are locally distributed in small zones. 
     
     
         10 . The air cushion pad according to  claim 1 , wherein the tubes form notches having a depth m in tubular walls thereof and the tubes comprise connection ribs having a height n, which satisfy the following condition: m=n/2, the connection ribs being arranged at 90 degree angular interval around each of the tubes. 
     
     
         11 . The air cushion pad according to  claim 1 , wherein the tubes comprise ribs formed on an outer surface thereof and the ribs are arranged at 90 degree angular interval along the outer surface. 
     
     
         12 . The air cushion pad according to  claim 1 , wherein the tubes are square tubes having a hollow interior forming a circular cavity 
     
     
         13 . The air cushion pad according to  claim 1 , wherein the hollow tubes of the upper sheet member and the lower sheet member are fit to each other in such a way that every two tubes surround one tube along a line. 
     
     
         14 . The air cushion pad according to  claim 1 , wherein the tubes have tubular walls that have a non-uniform wall thickness. 
     
     
         15 . The air cushion pad according to  claim 1 , wherein the tubes have a side wall that is of a slope. 
     
     
         16 . The air cushion pad according to  claim 1 , wherein the upper sheet member and the lower sheet member are connected to each other by a leaf. 
     
     
         17 . The air cushion pad according to  claim 1 , wherein the upper sheet member and the lower sheet member are respectively provided on outer sides thereof with outer enclosure films that have outer circumferences bonded together to form an enclosed sack between the outer enclosure films. 
     
     
         18 . An air cushion pad comprising an upper sheet member, at least one intermediate lining layer, and a lower sheet member, characterized in that:
 the upper sheet member is made of a resilient material and forms a plurality of hollow tubes projecting therefrom, the tubes being connected by a plate;   each intermediate lining layer is made of a resilient material and has at least one surface forming a plurality of hollow tubes projecting therefrom; and   the lower sheet member is made of a resilient material and forms a plurality of hollow tubes projecting therefrom, the tubes being connected by a plate;   wherein the hollow tubes of the upper sheet member and the hollow tubes of the lower sheet member are inter-fit to each other in an opposing manner.   
     
     
         19 . The air cushion pad according to  claim 18 , wherein the intermediate lining layer comprises a double-sided lining member, which comprises a first sheet member and a second sheet member, the first sheet member forming a plurality of tubes, the second sheet member forming a plurality of tubes, an extension being formed on one side of the two sheet members, the first sheet member and the second sheet member being bonded to each other in a back-to-back manner to form an air sack like internal space between the two sheet members, the extension forming therein an air vent adapted to communicate the outside. 
     
     
         20 . The air cushion pad according to  claim 18 , wherein the intermediate lining layer comprises a double-sided lining member and the intermediate lining layer comprises hollow tubes integrally formed on opposite surfaces of a plate. 
     
     
         21 . The air cushion pad according to  claim 18 , wherein the tubes of the upper sheet member, the intermediate lining layer, and the lower sheet member are selectively provided with a lid made of a rigid material. 
     
     
         22 . The air cushion pad according to  claim 18 , wherein the tubes have tubular walls between which connection ribs are arranged, each of the connection ribs having a top having a central portion forming a notch, the connection ribs being arranged at a 90 degree angular interval around each of the tubes. 
     
     
         23 . The air cushion pad according to  claim 18 , wherein the tubes have tip end positioned against opposite sheet member. 
     
     
         24 . The air cushion pad according to  claim 18 , wherein the tubes of the upper sheet member, the lower sheet member, and the intermediate lining layer are selectively different in length. 
     
     
         25 . The air cushion pad according to  claim 18 , wherein the tubes have tip ends that are of a predetermined shape, including a dome shape, a flat configuration, and an inwardly recessed configuration. 
     
     
         26 . The air cushion pad according to  claim 18 , wherein upper sheet member, the at least one intermediate lining layer, and the lower sheet member are respectively provided on outer sides thereof with outer enclosure films that have outer circumferences bonded together to form an enclosed sack between the outer enclosure films. 
     
     
         27 . The air cushion pad according to  claim 18 , wherein the cushion pad comprises tubes that are locally distributed in large zones and tubes that are locally distributed in small zones. 
     
     
         28 . The air cushion pad according to  claim 18 , wherein the tubes form notches having a depth m in tubular walls thereof and the tubes comprise connection ribs having a height n, which satisfy the following condition: m=n/2, the connection ribs being arranged at 90 degree angular interval around each of the tubes. 
     
     
         29 . The air cushion pad according to  claim 18 , wherein the tubes comprise ribs formed on an outer surface thereof and the ribs are arranged at  90  degree angular interval along the outer surface. 
     
     
         30 . The air cushion pad according to  claim 18 , wherein the tubes are square tubes having a hollow interior forming a circular cavity 
     
     
         31 . The air cushion pad according to  claim 18 , wherein the hollow tubes of the upper sheet member and the lower sheet member are fit to each other in such a way that every two tubes surround one tube along a line. 
     
     
         32 . The air cushion pad according to  claim 18 , wherein the tubes have tubular walls that have a non-uniform wall thickness. 
     
     
         33 . The air cushion pad according to  claim 18 , wherein the tubes have a side wall that is of a slope. 
     
     
         34 . The air cushion pad according to  claim 18 , wherein the upper sheet member and the lower sheet member are connected to each other by a leaf