Patent ID: 6869130

Claim:
A vehicle door inner panel comprising a front end wall ( 12 ), a rear end wall ( 13 ), a waist rail ( 15 ), and a reinforcement beam ( 20 ) fastened between said end walls for transmitting force from a first door pillar ( 33 ) to which the door is fastened to a second door pillar ( 34 ) situated behind said door in the event of a collision, characterised in that the reinforcement beam ( 20 ) is formed, at least in part, as a single hat profile ( 21 ), a front end of said reinforcement beam being connected to said front end wall ( 12 ), and a rear end of said reinforcement beam being connected to said rear end wall, the front end of said reinforcement beam being connected to said front end wall at a location on said front end wall above the location at which said rear end of said reinforcement beam is connected to said rear end wall such that the height of said reinforcement beam decreases continuously from the front end of said reinforcement beam to the rear end of said reinforcement beam, said inner panel adapted to be hung on the A-pillar ( 33 ) of the vehicle, the attachment end ( 21 ) of the reinforcement beam in the front end wall ( 12 ) of the inner panel overlapping the A-pillar when the door is fitted, the single hat profile ( 21 ) of said front end of said reinforcement beam ( 20 ) extending into a double hat profile ( 22 ) in a direction towards said rear end of said reinforcement beam ( 20 ).