Patent ID: 6840378

Claim:
A connection structure of a storage compartment comprising: a handle ( 34 ) movably mounted on a top board member ( 4 ) of the storage compartment between a stored position in which the handle is received within a storage part for the handle provided in the top board member and an upright position in which the handle extends above the storage part; an engaging piece ( 41 ) movably mounted on a base board ( 2 ) of the storage compartment between a first position in which the engaging piece is contained within the storage compartment and a second position in which the engaging piece extends outside of the storage compartment, said engaging piece, when in said second position, being capable of interlocking with corresponding interlocking structure provided on a top board of a similarly constructed storage compartment when two similarly constructed storage compartments are stacked one above the other; means for biasing said engaging piece toward said second position in which the engaging piece extends outside of the storage compartment; tractive means ( 51 ) connecting the handle to said engaging piece, whereby movement of said handle from said stored position to said upright position causes the engaging piece to be moved from said second position in which the engaging piece extends outside of the storage compartment to said first position in which the engaging piece is contained within the storage compartment, wherein the handle is rotatably attached to the top board member through a horizontal axle ( 35 ) rotatably supported by axle hole parts ( 33 , 33 ) of an attachment base board ( 31 ) which is mounted on the top board member.