Box with lateral collapsible walls

Abstract

The present invention relates to a plastic moulded box with parallellepiped structure and rectangular base provided with collapsible lateral walls ( 3, 4, 5 ), in which the two longitudinal walls ( 3, 4 ) are higher than half of the width of the transversal walls ( 5 ); it being provided that the two longitudinal walls are perfectly aligned on the same horizonal plane when they are collapsed in idle position by means of partial male-female coupling.

1 . Plastic moulded box with collapsible lateral walls, of the type in which the longitudinal walls ( 3 ,  4 ) are higher than half of the width of the transversal walls ( 5 ), wherein the two longitudinal walls ( 3 ,  4 ) are provided on top with shaped longitudinal bands ( 31 ,  41 ) with identical section and different dimensions, so that the internal side of the box-shaped band ( 41 ) of the second longitudinal wall ( 4 ) is exactly overlapped, receiving it completely, on the external side of the shaped band ( 31 ) of the first longitudinal wall ( 3 ) when both walls ( 3 ,  4 ) are collapsed in a sequence in horizontal idle position parallel to the bottom wall ( 2 ) of the box ( 1 ),
 said band ( 41  of the second longitudinal wall having a longitudinal rib ( 44 ) protruding from the upper horizontal border, able to engage into a longitudinal groove ( 31   a ) provided at the base of the shaped band ( 31 ) of the first wall ( 3 ),   said first longitudinal wall ( 3 ) being laterally bordered by two stiffening edges ( 32 ) obtained on the vertical borders, but not for the entire height thereof,   the lateral ends of the box-shaped band ( 31 ) of the first lateral wall being closed by corresponding partitions ( 33 ), occupying a more internal position than the adjacent stiffening edge ( 32 ),   a transversal notch ( 34 ) being obtained in intermediate position between the stiffening edge ( 32 ) and the partition ( 33 ), said transversal notch ( 34 ) ending into a circular hole ( 35 ) on the surface of the first longitudinal wall ( 3 ),   the second longitudinal wall ( 4 ) being provided with stiffening edges ( 42 ) on the vertical borders extending for the entire height of the vertical borders, said stiffening edges ( 42 ) being joined on top with very short edges ( 43 ) with identical height obtained at the two ends of the upper horizontal border of the shaped band ( 41 ) of the second longitudinal wall ( 40 ),   the short edges ( 43 ) being joined on the opposite side, with the interposition of corresponding cylindrical pins ( 43   a ), with the ends of said longitudinal rib ( 44 ) that protrudes from the upper horizontal border of the shaped band ( 41 ) of the second longitudinal wall ( 4 ),   so that, when the second longitudinal wall ( 4 ) is collapsed on the first longitudinal wall ( 3 ):   the rib ( 44 ) is exactly engaged into the corresponding longitudinal grove ( 31   a ) provided at the base of the shaped band ( 31 ) of the first wall ( 3 ),   the lateral short edges ( 43 ) are exactly engaged into the corresponding transversal notches ( 34 ) provided on the vertical borders of the first wall ( 3 ),   the cylindrical pins ( 43   a ) are exactly engaged into the corresponding holes ( 35 ) obtained on the first longitudinal wall ( 3 ) in internal position in each notch ( 34 ), and   the stiffening edge ( 42 ) of the second longitudinal wall ( 4 ) is brought in perfect alignment with the corresponding stiffening edge ( 32 ) of the first longitudinal wall ( 3 ).   
   
   
       2 . Plastic moulded box as claimed in  claim 1 , characterised in that the longitudinal shaped bands ( 31 ,  41 ) of the two longitudinal walls ( 3 ,  4 ) have a basically sinusoidal section. 
   
   
       3 . (canceled) 
   
   
       4 . (canceled) 
   
   
       5 . Plastic moulded box as claimed in  claim 1 , characterised in that the second longitudinal wall ( 4 ) is provided at the two sides of the box-shaped band ( 41 ) with corresponding niches ( 45 ) with vertical direction and concavity towards the inside of the box ( 1 ) bordered on the external side by said stiffening edges ( 42 ) provided on both the vertical borders of the second longitudinal wall ( 4 ); it being provided that, when the internal side of the second longitudinal wall ( 4 ) touches the external side of the first longitudinal wall ( 3 ), the niches ( 45 ) are exactly overlapped, embracing them completely, on said corresponding partitions ( 33 ) provided at the two ends of the shaped band ( 31 ) of the first longitudinal wall ( 3 ). 
   
   
       6 . Plastic moulded box as claimed in  claim 1 , characterised in that the top border of the box-shaped band ( 31 ) of the first longitudinal wall ( 3 ) is provided at the two ends with cylindrical pins ( 33   a ) facing the inside of the box ( 1 ),designed to be exactly engaged, when the entire first longitudinal wall ( 3 ) is collapsed in horizontal position on the previously collapsed transversal walls ( 5 ), into corresponding holes with vertical axis ( 50 ) suitably obtained above the two short raised edges ( 51 ) where the transversal walls ( 5 ) are pivoted.