Seat drive device

摘要

A seat drive device is provided with: a single rotary motor; a plurality of operating members, which are arranged to correspond to a plurality of positioning mechanisms; a plurality of tubular members, which are arranged to correspond to the positioning mechanisms and selectively connect an output shaft to the positioning mechanism corresponding to the operating member operated with the operation of any one of the operating members and input shafts rotated by the rotary motor; and a single switch, which passes an electric current through the rotary motor with a polarity corresponding to the direction of the operation with the operation of any one of the operating members.

主权项

1. A seat drive device comprising:
a single rotary motor; a plurality of operating members provided in correspondence with a plurality of positioning mechanisms; a plurality of clutch mechanisms provided in correspondence with the positioning mechanisms, wherein
each of the clutch mechanisms includes:
an output shaft connected to a corresponding positioning mechanism, andan input shaft rotated by the rotary motor,wherein, in response to operation on any one of the operating members, the clutch mechanism selectively connects the output shaft to the positioning mechanism corresponding to the operated operating member to the input shaft rotated by the rotary motor; and a single switch, wherein, in response to operation on any one of the operating members, the switch energizes the rotary motor with a polarity corresponding to a direction of the operation, wherein each of the clutch mechanisms includes a tubular member, wherein a corresponding output shaft is inserted and fitted in the tubular member to rotate integrally with the tubular member and to be movable in a direction of an axis, and wherein the input shaft is inserted and fitted in the tubular member such that the input shaft rotates integrally with the tubular member in response to movement of the tubular member in the direction of the axis toward the input shaft, and each of the clutch mechanisms of the seat drive device includes:
a first urging member that urges each of the tubular members in the direction of the axis toward a direction in which the input shaft is inserted and fitted in the tubular member;a cam member drivably coupled to each of the operating members, wherein the cam member releases the input shaft from a fitted state with the corresponding one of the tubular members when the operating member is at a predetermined initial position, and, in response to operation on the operating member at the initial position, the cam member permits the input shaft to be fitted in the corresponding one of the tubular members urged by the first urging member; anda second urging member that urges the corresponding one of the operating members against an urging force of the first urging member such that each of the operating members is held at the initial position.