Bumper shield for a motor vehicle

Abstract

The bumper shield for a motor vehicle comprising two main longitudinal members ( 12 ), two auxiliary longitudinal members ( 16 ) positioned at a lower height, as well as supporting and attachment plates ( 20 ) positioned between the ends of the longitudinal members ( 12, 16 ), is a single integral piece in plastic material and is formed of two uprights ( 28 ) and an upper beam ( 24 ) connecting the uprights ( 28 ), the uprights ( 28 ) being configured so as to bear upon the plates ( 20 ) so as to act as impact absorbers, the shield ( 8 ) having the shape of an H or an inverted U given by the uprights ( 28 ) and the upper beam ( 24 ).

1 . A bumper shield for a motor vehicle comprising two main longitudinal members, two auxiliary longitudinal members positioned at a lower height, as well as supporting and attachment plates positioned between the ends of the longitudinal members, the bumper shield being characterized in that it is a single integral piece in plastic material and formed of two uprights and an upper beam connecting the uprights, the uprights being configured in order to bear upon the plates so as to act as impact absorbers, the shield having the shape of an H or an inverted U given by the uprights and the upper beam. 
     
     
         2 . The bumper shield according to  claim 1 , wherein the upper beam is substantially at the height of the main longitudinal members. 
     
     
         3 . The bumper shield according to  claim 1 , wherein the upper beam is positioned at a height substantially different from that of the main longitudinal members. 
     
     
         4 . The bumper shield according to  claim 1 , wherein the uprights have a thickness comprised between 120 and 220 mm. 
     
     
         5 . The bumper shield according to  claim 1 , wherein the uprights have a cellular structure formed with cells extending longitudinally through the uprights and opening onto the rear and/or front face of the shield. 
     
     
         6 . The bumper shield according to  claim 5 , wherein each upright comprises first blind cells, closed on the rear face side and open on the front face side, and second blind cells open on the rear face side and closed on the front face side. 
     
     
         7 . The bumper shield according to  claim 1 , wherein the upper bumper beam is double and comprises two vertically spaced cross-members. 
     
     
         8 . The bumper shield according to  claim 1 , characterized in that it comprises at least one pedestrian absorption rib protruding outwards from an upright. 
     
     
         9 . A bumper assembly of a motor vehicle, of the type comprising two main longitudinal members and two auxiliary longitudinal members, positioned at a lower height, and supporting and attachment plates positioned at the ends of the longitudinal members, which assembly comprises a bumper shield according to any of the preceding claims, the uprights being attached and rigidly bearing against the plates. 
     
     
         10 . The assembly according to  claim 9 , wherein the uprights are attached to the plates by screwing and/or adhesive bonding. 
     
     
         11 . The assembly according to  claim 9 , comprising two plates, each plate connecting a main longitudinal member and an auxiliary longitudinal member and extending over the whole of the height separating the main longitudinal member from the auxiliary longitudinal member, each upright being applied onto the common plate substantially along the whole of its height. 
     
     
         12 . The assembly according to  claim 9 , which further comprises a lower beam extending transversely between the auxiliary longitudinal members and distinct from the bumper shield. 
     
     
         13 . The assembly according to  claim 12 , characterized in that a pedestrian absorption rib extends laterally so as to be applied on the upper beam. 
     
     
         14 . The assembly according to  claim 9 , which is a motor vehicle front bumper assembly. 
     
     
         15 . The assembly according to  claim 9 , which is a motor vehicle rear bumper assembly. 
     
     
         16 . The assembly according to  claim 10 , comprising two plates, each plate connecting a main longitudinal member and an auxiliary longitudinal member and extending over the whole of the height separating the main longitudinal member from the auxiliary longitudinal member, each upright being applied onto the common plate substantially along the whole of its height. 
     
     
         17 . The assembly according to  claim 10 , which further comprises a lower beam extending transversely between the auxiliary longitudinal members and distinct from the bumper shield. 
     
     
         18 . The assembly according to  claim 11 , which further comprises a lower beam extending transversely between the auxiliary longitudinal members and distinct from the bumper shield. 
     
     
         19 . The assembly according to  claim 12 , characterized in that it comprises at least one pedestrian absorption rib extending transversely between auxiliary longitudinal members and distinct from the bumper shield protruding outwards from an upright.