| 摘要 |
A system ( 10 ) for attaching a trailing device ( 12 ) to a vehicle includes a bumper assembly ( 11 ) having a back structure ( 13 ) which carries an energy absorbing module ( 14 ). The system ( 10 ) includes receiver assemblies ( 60 ) which are attached to the bumper back structure ( 13 ) and which include a tube ( 62 ). The system ( 10 ) also includes carrier assemblies ( 40 ) which carry the trailing device ( 12 ) and which each includes an arm end ( 42 ) slidably received in the tubes ( 62 ). Shear pins ( 73 ) attach the arm ends ( 42 ) to the tubes ( 62 ) and upon impact to the trailing device ( 12 ), a leg ( 74 ) of each pin ( 73 ) can be sheared allowing relative movement between the arm ends ( 42 ) and the tubes ( 62 ). As a result, the carrier assemblies ( 40 ) contact the energy absorbing bumper module ( 14 ) to absorb some of the energy of the impact. As the arm ends ( 42 ) begin to move in the other direction through tubes ( 62 ), by virtue of the rebound effect of the energy absorbing module ( 14 ), another leg ( 75 ) of each pin ( 73 ) engages the tube ( 62 ) to stop the rebounding movement.
|
