Bottom coupling structure for containers

Abstract

Disclosed herein is a bottom coupling structure for containers. The bottom coupling structure of the present invention is constructed by assembling a plurality of elements, each of which is made by pressing a plurality of wood slices, thus enhancing durability, water resistance, antibacterial activity, heat insulation ability and sound proofness. Furthermore, because the present invention reduces the weight of a container, portability and manufacturability of the container are superior. Moreover, because all elements constituting the bottom coupling structure are assembled together through fitting processes without welding, the manufacturing process is simplified. As well, thanks to the use of relatively inexpensive wood, the present invention is economical. As such, the present invention provides a bottom coupling structure having enhanced workability, economic efficiency, portability and maintainability.

1 . A bottom coupling structure for a container (C), which comprises posts (F) provided on four corners of the container (C), steel plates provided between the posts (F) to form sidewalls and a ceiling of the container, and interior plates attached to inner surfaces of the steel plates, wherein the bottom coupling structure comprises:
 a plurality of lateral frames ( 1 ) provided on front and rear ends of a bottom of the container (C) in four brackets (B), provided on lower edges of the bottom of the container (C) and coupled to lower ends of the posts (F), with a stepped seat ( 10 ) formed in each of opposite ends of each of the lateral frames ( 1 ), and a coupling notch ( 11 ) formed at a medial position in each of the lateral frames ( 1 );   a plurality of longitudinal frames ( 2 ) coupled at opposite ends thereof to the stepped seats ( 10 ) formed on the opposite ends of the lateral frames ( 1 ), with a stepped seat ( 20 ) formed along an upper end of each of the longitudinal frames ( 2 ), and a plurality of coupling notches ( 21 ) formed adjacent to the stepped seat ( 20 ) in each of the longitudinal frames ( 2 ) and spaced apart from each other at regular intervals;   a longitudinal support rib ( 3 ) coupled to the coupling notches ( 11 ), formed at the medial positions in the lateral frames ( 1 ), with a pair of stepped seats ( 30 ) formed along both edges of an upper end of the longitudinal support rib ( 3 ), and a plurality of coupling notches ( 31 ) formed adjacent to the stepped seat ( 30 ) in the longitudinal support rib ( 3 ) and spaced apart from each other at regular intervals; a plurality of lateral support ribs ( 4 ) fitted into both the coupling notches ( 21 ) of the longitudinal frames ( 2 ) and the coupling notches ( 31 ) of the longitudinal support rib ( 3 ); and   a pair of bottom plates ( 5 ), with a pair of stepped seats ( 51 ) formed along opposite lower edges of each of the bottom plates ( 5 ), so that the stepped seats ( 51 ) of the bottom plates ( 5 ) are coupled both to the stepped seats ( 20 ) of the longitudinal frames ( 2 ) and to the stepped seats ( 30 ) of the longitudinal support rib ( 3 ).   
   
   
       2 . A bottom coupling structure for a container (C), which comprises posts (F) provided on four corners of the container (C), steel plates provided between the posts (F) to form sidewalls and a ceiling of the container, and interior plates attached to inner surfaces of the steel plates, wherein
 the bottom coupling structure comprises: a reinforcing plate ( 6 ) provided in four brackets ( 13 ), provided on lower edges of the bottom of the container (C) and coupled to lower ends of the posts (F); a plurality of longitudinal members ( 7 ), each having a rectangular shape, fastened to an upper surface of the reinforcing plate ( 6 ) and spaced apart from each other; and a bottom plate ( 50 ) fastened to the longitudinal members ( 7 ) by a locking unit (P).   
   
   
       3 . A bottom coupling structure for a container (C), which comprises posts (F) provided on four corners of the container (C), steel plates provided between the posts (F) to form sidewalls and a ceiling of the container, and interior plates attached to inner surfaces of the steel plates, wherein the bottom coupling structure comprises:
 a support plate ( 8 ) provided in four brackets (B), provided on lower edges of the bottom of the container (C) and coupled to lower ends of the posts (F); and a bottom plate ( 500 ), with stepped seats ( 501 ) formed under opposite ends of the bottom plate ( 500 ) so that the stepped seats ( 501 ) are seated on a plurality of angle bars ( 9 ) provided on opposite ends of the support plate ( 8 ), a reinforcing member seating groove ( 502 ) formed at a medial position under the bottom plate ( 500 ), and a reinforcing member ( 503 ) inserted into the reinforcing member seating groove ( 502 ), the bottom plate ( 500 ) being fastened to the angle bars ( 9 ) by both the support plate ( 8 ) and a locking unit (P).   
   
   
       4 . The bottom coupling structure according to  claim 1 , wherein each of the stepped seats ( 30 ), formed along both edges of an upper end of the longitudinal support rib ( 3 ), is angled at an acute angle. 
   
   
       5 . The bottom coupling structure according to any one of  claims 1  through  3 , wherein the frames ( 1 ,  2 ), the support ribs ( 3 ,  4 ), the plates ( 5 ,  8 ,  50 ,  500 ) and the members ( 6 ,  70 ,  503 ) are made by pressing a plurality of wood slices and by bonding the wood slices to each other.