Collapsible shaft assembly

Details Collapsible shaft assembly Collapsible shaft assembly

1991-09-03

1992-05-26

Bonck, Rodney H.

Machine element or mechanism

Control lever and linkage systems

Hand operated

74492, 280777, 464162, 464167, B62D 118

Patent

active

051156911

ABSTRACT:
A longitudinally collapsible shaft assembly particularly for application as a steering shaft in energy absorbing steering columns. The shaft assembly includes a first shaft element having a tube end, a second shaft element having a bar end in the tube end, and a coupling which connects the bar and tube ends for unitary rotation without restraining the shaft elements longitudinally relative to each other. The coupling includes diametrically opposite longitudinal slots in the tube end and two longitudinally spaced pairs of diametrically opposite rollers on the bar end which roll along the side edges of the slots to minimize friction during longitudinal collapse. for transferring torque between the tube and bar ends in one direction, one pair of diametrically opposite rollers engages one pair of diagonally opposite side edges of the longitudinal slots. For transferring torque between the tube and bar ends in the opposite direction, the other pair of diametrically opposite rollers engages the other pair of diagonally opposite side edges of the longitudinal slots.

REFERENCES:
patent: 1791001 (1931-02-01), Rasmussen
patent: 2371330 (1945-03-01), Irstad
patent: 3001387 (1961-09-01), Schultz
patent: 3144785 (1964-08-01), Steiner et al.
patent: 3165942 (1965-01-01), Steiner et al.
patent: 3306127 (1967-02-01), Rieger
patent: 3491614 (1970-01-01), Saunders et al.
patent: 3580101 (1971-05-01), Jorgensen
patent: 4106311 (1978-08-01), Euler
patent: 4796481 (1989-01-01), Nolte

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