Resiliently expandable, releasably-engaging connecting unit and cap having the same

Abstract

Disclosed herein is a releasably-engaging connecting unit with resilient expansion coming from its unique structure, and a cap having the same. The releasably-engaging connecting unit comprises a first connecting body anchored to a first portion and a second connecting body anchored to a second portion so as to connect the first portion to the second portion in a releasably-engaging manner. The first connecting body comprises: a first frame unit defining an elongated, outer periphery and comprising upper and lower frames; a plurality of first supporting members, each having two ends, one connected to the upper frame of the first frame unit and the other connected to the lower frame thereof, wherein the first supporting members are arranged at a regular distance and are inclined with respect to a center axis of the first frame unit in a longitudinal direction; a plurality of second supporting members, each having two ends, one connected to the upper frame of the first frame unit and the other connected to the lower frame thereof, wherein the second supporting members are arranged at a regular distance and are inclined with respect to the center axis of the first frame unit in the longitudinal direction, and wherein the second supporting members intersect the first supporting members; and a plurality of projections arranged at a regular distance on a straight line connecting intersections of the first supporting members and the second supporting members, and secured to the first supporting members and to the second supporting members. The second connecting body comprises a plurality of insertions holes at positions corresponding to position where the plurality of projections is formed.

What is claimed is: 
     
         1 . A releasably-engaging connecting unit comprising a first connecting body anchored to a first portion and a second connecting body anchored to a second portion so as to connect the first portion to the second portion in a releasably-engaging manner, wherein the first connecting body comprises:
 a first frame unit defining an elongated, outer periphery and comprising upper and lower frames;   a plurality of first supporting members, each having two ends, one connected to the upper frame of the first frame unit and the other connected to the lower frame thereof, wherein the first supporting members are arranged at a regular distance and are inclined with respect to a center axis of the first frame unit in a longitudinal direction;   a plurality of second supporting members, each having two ends, one connected to the upper frame of the first frame unit and the other connected to the lower frame thereof, wherein the second supporting members are arranged at a regular distance and are inclined with respect to the center axis of the first frame unit in the longitudinal direction, and wherein the second supporting members intersect the first supporting members; and   a plurality of projections arranged at a regular distance on a straight line connecting intersections of the first supporting members and the second supporting members, and secured to the first supporting members and to the second supporting members, and   wherein the second connecting body comprises a plurality of insertions holes at positions corresponding to position where the plurality of projections is formed.   
     
     
         2 . The connecting unit according to  claim 1 , wherein the second connecting body comprises:
 a second frame unit defining an elongated, outer periphery and comprising upper and lower frames;   a plurality of third supporting members, each having two ends, one connected to the upper frame of the first frame unit and the other connected to the lower frame thereof, wherein the third supporting members are arranged at a regular distance and are inclined with respect to a center axis of the second frame unit in a longitudinal direction; and   a plurality of fourth supporting members, each having two ends, one connected to the upper frame of the first frame unit and the other connected to the lower frame thereof, wherein the fourth supporting members are arranged at a regular distance and are inclined with respect to the center axis of the second frame unit in the longitudinal direction, and wherein the fourth supporting members intersecting the third supporting members,   wherein the plurality of insertion holes are formed between intersections of the third supporting members and the fourth supporting members.   
     
     
         3 . The connecting unit according to  claim 2 , wherein the arrangement of the first supporting members and the second supporting members of the first connecting body is identical to the arrangement of the third supporting members and the fourth supporting members of the second connecting body. 
     
     
         4 . The connecting unit according to  claim 1 , wherein the first and second supporting members have a straight line shape and are symmetric to each other with respect to the center axis of the first frame unit in the longitudinal direction. 
     
     
         5 . The connecting unit according to  claim 1 , wherein the projections are arranged on intersections of the first supporting members and the second supporting members or are arranged on sub-supporting bodies occupying spaces between intersections of the first supporting members and the second supporting members. 
     
     
         6 . The connecting unit according to  claim 3 , wherein the first and second supporting members have a straight line shape and are symmetric to each other with respect to the center axis of the first frame unit in the longitudinal direction, and
 wherein the projections have a rectangular cross-section, each having a shoulder portion formed at an end thereof.   
     
     
         7 . The connecting unit according to  claim 1 , wherein the first connecting body is made of an elastic material. 
     
     
         8 . The connecting unit according to  claim 2 , wherein the first connecting body and the second connecting body are made of elastic materials. 
     
     
         9 . A cap, comprising the releasably-engaging connecting unit according to any one of  claims 1  to  8 .