| 主权项 |
1. A ventilation crossmember for a motor vehicle, comprising:
a beam in the form of a section member forming a channel along the length of the beam, said channel having side faces and presenting an opening in one of said side faces; and a duct extending inside the channel, said duct being made of rigid insulating material and having an opening defined by a mouth in register with the opening of the channel, the opening of the duct having a cross section of smaller size than the opening of the channel, the opening of the duct of insulating material being inside the channel, the crossmember including an interface device in the form of a sleeve engaged through the opening of the channel and connecting the mouth of the opening of the duct in leaktight manner to a vent situated outside said crossmember, the interface device having a first end located inside the channel and being connected in a leaktight manner to the mouth of the opening of the duct, the interface device having a second end located outside the channel and being connected in a leaktight manner to said vent, the interface device being rigidly fastened to the channel, the interface device having two lips that engage with the mouth of the opening of the duct, a wall of the duct surrounding the opening of the duct being separated from a wall that surrounds the opening of the channel by an empty space, the mouth of the opening of the duct protruding from the wall of the duct surrounding the opening of the duct inside the empty space, and the mouth of the opening of the duct comprising a wall, inside the empty space, that cooperates with the two lips inside the empty space, and extends along an insertion direction of the two lips toward an exterior of the channel, the mouth of the opening of the duct projecting outward from the wall of the duct inside the empty space and toward the opening of the channel. |
