| 摘要 |
A roof railing assembly (20) includes a rail (22), a bracket attachment (28) disposed on the rail (22), and a fastener (44, 46, 48) on the bracket attachment (28), wherein the bracket attachment (28) is a defined by a structural layer of material (40) which defines a plurality of small voids (42). A flange (54) is disposed about the fastener (44, 46, 48) for restricting axial movement. An insulating layer (56) is disposed about the supported end (50) of the fastener (44, 46, 48) for absorbing force. The outer diameter of the flange (54) is greater than the outer diameter of the insulating layer (56) to further restrict axial movement. A torque limiter (58) is disposed about the fastener (44, 46, 48) for disconnecting the fastener (44, 46, 48) from the vehicle roof to avoid excessive loading on the fastener (44, 46, 48). A plurality of ribs (60) are disposed on the fastener (44, 46, 48) and extend radially outwardly into the bracket attachment (28) for restricting rotational movement of the fastener (44, 46, 48).
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