US 12,558,999 B2 · Power swivel device for seat

Abstract

A power swivel device for a vehicle seat is configured to perform both swivel and monopost functions of the vehicle seat. The power swivel device includes a motor configured to swivel the seat and a reduction gear device configured to increase output torque of the motor, which are stacked in a vertical direction on a bottom of the seat. The power swivel device includes a lower housing; an upper housing stacked on and assembled to the lower housing; an eccentric shaft rotatably disposed relative to the lower housing and the upper housing; a motor driving unit mounted between the lower housing and the eccentric shaft; the reduction gear device installed between the upper housing and the eccentric shaft; and a swivel plate rotatably mounted on the reduction gear device and connected to a seat cushion frame.

Claims19

Dependent claims

A power swivel device for a vehicle seat, the power swivel device comprising:

a lower housing;
an upper housing stacked on and assembled to the lower housing;
an eccentric shaft rotatably disposed relative to the lower housing and the upper housing;
a motor driving unit mounted between the lower housing and the eccentric shaft;
a reduction gear device installed between the upper housing and the eccentric shaft;
and
a swivel plate rotatably mounted on the reduction gear device and connected to a seat cushion frame,
wherein the eccentric shaft comprises:
a cylindrical body;
a circular part formed at an uppermost end of the cylindrical body;
a first eccentric part formed to be integrated with an outer diameter portion of the cylindrical body and located below the circular part;
and
a second eccentric part formed to be integrated with the outer diameter portion of the cylindrical body and located below the first eccentric part.

10 more elements

A power swivel device for a vehicle seat, the power swivel device comprising:

a lower housing;
an upper housing stacked on and assembled to the lower housing;
an eccentric shaft rotatably disposed relative to the lower housing and the upper housing;
a motor driving unit mounted between the lower housing and the eccentric shaft;
a reduction gear device installed between the upper housing and the eccentric shaft;
and
a swivel plate rotatably mounted on the reduction gear device and connected to a seat cushion frame,
wherein the reduction gear device comprises:
a first external gear inserted into and coupled to a first eccentric part of the eccentric shaft;
a second external gear inserted into and coupled to a second eccentric part of the eccentric shaft;
and
an internal gear formed on an inner diameter portion of the upper housing and engaged with the first external gear and the second external gear.

9 more elements

Dependencies are inferred from the claim text.

Power swivel device for seat

Life of this patent

Power swivel device for seat

Life of this patent

Abstract

Claims19