Structure of impact absorbing steering apparatus

Details Structure of impact absorbing steering apparatus Structure of impact absorbing steering apparatus

1990-06-26

1992-02-18

Marmor, Charles A.

Land vehicles

Wheeled

Running gear

280779, 74492, B62D 111

Patent

active

050887688

ABSTRACT:
A structure for a shock energy absorbing type steering apparatus is disclosed in which a column jacket in which a bracket member, rotatably fixed to a clamp, is attached to a vehicle body linked to a column jacket by means of welding and an enclosing body is extended in a space between the bracket member and clamp so as to enclose an upper surface area of the bracket member, thus preventing a foreign matter from invading into the inside of the bracket member. In addition, the bracket member includes a front wall to which the column jacket is perpendicularly fixed, curling portions formed on both side ends of the front wall, rollers inserted into the corresponding curling portions, and side walls extended from the curling portions in parallel to the column jacket, and cut-out portions formed on a portion of the bracket member below the curling portions. Furthermore, the bracket member includes projection portions located below the cut-out portions and engaged and penetrated through step portions of the clamp, the clamp member including pawl portions engaging bottom and front portions. Therefore, even if spot welded portions via which the bracket member and clamp are snapped due to shock generated by secondary collision, the projection portion and pawl portions serve to block the shock energy from being transmitted and prevent the bracket member from disengaging from the clamp. Shock energy is absorbed when the cut-out portions are torn off.

REFERENCES:
patent: 3709057 (1973-01-01), Kitzner et al.
patent: 4452096 (1984-06-01), Workman
patent: 4733575 (1988-03-01), Nakamura

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