Apparatus for adjusting seats in motor vehicles

Details Apparatus for adjusting seats in motor vehicles Apparatus for adjusting seats in motor vehicles

1990-09-04

1990-11-13

Talbott, David L.

Supports

Stand

Horizontally movable support surface

74352, 297330, 297344, F16M 1300

Patent

active

049696211

ABSTRACT:
Apparatus for adjusting a seat in a motor vehicle forwardly or backwards has guide rails on the floor of the passenger compartment in the vehicle, seat supporting rails which are movable along the guide rails, toothed racks on the guide rails, pinions meshing with the racks, and a motor-driven transmission with a rotary output element which serves to rotate the pinions in order to move the supporting rails along the guide rails. The shaft which transmits torque to the pinions has an external gear in mesh with an internally toothed portion of an axially movable sleeve which is further provided with an externally toothed portion movable into and from mesh with an internal gear of the output element. A shifting element is provided to move the sleeve axially into and from mesh with the internal gear of the output element. This enables the occupant of the seat or another person to disengage the output element from the shaft in the event of failure of the motor and to permit non-motorical adjustment of the position of the seat. A spring is provided to permanently bias the shifting element to a position in which the output element can transmit torque to the pinions.

REFERENCES:
patent: 2546685 (1951-03-01), Ashton
patent: 4085629 (1978-04-01), Fogarollo
patent: 4272048 (1981-06-01), Kluting et al.
patent: 4641806 (1987-02-01), Pipon et al.

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