Delphi Technologies, Inc.

Gm Global Technolgoy Operations, Inc.

James R Salois

Richard Kremer Riefe

David Michael Byers

Marc William Heinzman

Michael John Clayton

Robert Allen Sarsfield

An energy absorbing device for a collapsible steering column of a vehicle includes an M-shaped plastically deformable strap for imposing a resistance to collapse of the steering column when the steering column collapses in a vehicle collision. An anvil adjusts the resistance to collapse imposed on the steering column by the strap. A controller produces a signal of a magnitude indicative of an amount of resistance needed to be imposed on the steering column by the strap to better protect from injury a driver seated behind the steering column at the time of the collision. An actuator receives the signal and actuates the anvil to adjust the amount of resistance imposed by the strap in accordance with the magnitude of the signal.

Responsive E/A system for steering columns

The lower bracket assembly for a vehicle steering column includes a lower column support bracket with a central passage. A lower bearing adapter slides into the central passage from the rear. A pair of energy absorption straps engage the column support bracket and the lower bearing adapter and resist further forward movement of the lower bearing adapter. During a collision, the energy absorption straps absorb energy while permitting the lower bearing adapter to move forward and out of the central passage through the column support bracket.

Steering column lower bracket

A tilt-adjustable motor vehicle steering column including a stationary mast, a tilt housing supported on the mast jacket for up and down pivotal movement, an articulated steering shaft having a lower portion rotatably supported on the mast jacket and an upper portion rotatably supported on the tilt housing, a steering hand wheel on the upper portion of the steering shaft, and a long composite balance spring preloaded in compression flexure between the tilt housing and the mast jacket. The composite balance spring consists of a hinge and a pair of short helical coil springs on opposite sides of the hinge. To preload the composite balance spring in compression flexure, the short coil springs are first arrayed as straight sides of a 'V' between respective ones of a pair of spring seats on the mast jacket and the tilt housing. Then, when the hinge is thrust laterally to align the short coil springs on a longitudinal centerline of the composite balance spring between the spring seats, the hinge closes and the helical coil springs are compressed longitudinally without buckling. A latch automatically locks the hinge closed to reinforce the middle of the composite balance spring against lateral buckling.

Motor vehicle steering column and method

A connection between a collapsible mast jacket of an energy absorbing steering column and a body of a motor vehicle including a mounting bracket on the mast jacket having a planar flange parallel to a longitudinal centerline of the steering column, a V-shaped slot in the planar flange, and a V-shaped capsule in the V-shaped slot clamped rigidly to the body of the motor vehicle. A pair of channels in converging sides of the V-shaped capsule receive corresponding edges of the V-shaped slot for vertical support of the mast jacket on the vehicle body. The V-shaped capsule is retained on the mounting bracket by a pair of integral lugs on opposite sides of the V-shaped capsule seated in retaining notches in the edges of the V-shaped slot. Impact forces on the steering column fracture the integral lugs to release the mast jacket for energy absorbing collapse. One of the integral lugs is on a cantilever spring on the V-shaped capsule which snaps the lug resiliently into the corresponding one of the retaining notches when the V-shaped capsule is pushed manually into the V-shaped slot.

Growing community of inventors

Rochester Hills, MI, United States of America

James R Salois