US 4,306,746 A · All linkage close-to-the-wall reclining chair

Abstract

A close-to-the-wall, three-way reclining chair having an all linkage recliner mechanism which allows the chair to move between upright, intermediate and full recline positions while the back of the chair remains a fixed distance from a wall located behind the chair. The chair incorporates a novel recliner linkage assembly for moving the seat and backrest of the chair relative to the chair's arms during movement between upright and reclined positions. The recliner linkage assembly includes a novel four bar linkage system for serving the dual function of (a) supporting the arm rests from a pair of hanger links for generally linear translatory movement during movement between upright and reclined positions, and (b) supporting the chair seat and back rest frames from the four bars for generally pivotal translatory movement between upright and reclined positions. The novel all linkage recliner mechanism is so constructed that only a minimal starting effort or motion is required to initiate movement from an upright toward a reclined position, after which the weight of the person in the chair causes the movement to be continued until the chair arrives at the first reclined or so-called TV position. Thereafter, movement from the first reclined to the full reclined position is effected by the person leaning back further in the chair or alternatively, movement is effected to the upright position from either of the two reclined positions by the person seated in the chair simply leaning forwardly.

An all linkage recliner mechanism for a three-position close-to-the-wall reclining chair, said chair being adapted to move between upright, intermediate recline and full recline positions while the back of the chair remains at a substantially fixed distance from a wall located behind the chair, said mechanism comprising

a four bar linkage assembly which includes a stationary base member, front and rear carrier links each of which is connected to said base member, and a control mounting link pivotally connected at opposite ends to said front and rear carrier links, respectively, said four bar linkage functioning to prevent substantial rearward movement of the top of the chair's backrest as the chair moves from the upright to the recline positions,
an armrest frame mounting plate,
first linkage mounting means for connecting said armrest frame mounting plate to said four bar linkage for generally linear translatory movement of said armrest mounting plate relative to said base member upon movement of said chair between upright and reclined positions,
a seat frame mounting plate,
a backrest mounting plate, connected to said seat frame mounting plate,
second linkage means for connecting said seat frame mounting plate and said backrest mounting plate to said four bar linkage for movement relative to said armrest frame mounting plate and for generally pivotal translatory movement when said chair is moved between upright and reclined positions, said backrest frame mounting plate, seat frame mounting plate and armrest frame mounting plate being so connected to said four bar linkage that, upon slight initial forward motion of said armrest mounting plate relative to said base member, said chair will continue to move forwardly relative to said base member as a consequence of the weight of a person seated in the chair applying a downward force on said seat frame mounting plate,
a legrest extension linkage pivotally connected to said seat frame mounting plate and to said armrest frame mounting plate, said legrest linkage cooperating with said four bar linkage to extend a legrest from retracted to extended position as said chair moves from the upright to the intermediate recline position,
said second linkage means including a full recline linkage connected between said four bar linkage, said seat frame mounting plate and said backrest frame mounting plate, said backrest frame mounting plate being adapted to tilt rearwardly relative to said seat mounting plate as said chair moves from the intermediate to the full recline position, a rearward force provided against said backrest frame causing said full recline linkage to move said chair from the intermediate recline to the full recline position, and
said full recline linkage comprising a full recline link pivotally connected to said seat frame mounting plate and to said control mounting link and a backrest support link pivotally connected to said backrest frame mounting plate and to said control mounting link, said full recline link and said backrest support link cooperating to permit the chair's backrest frame to tilt rearwardly relative to the chair's seat frame to the full recline position when said chair moves from the intermediate recline to the full recline position.

6 more elements

All linkage close-to-the-wall reclining chair

Life of this patent

All linkage close-to-the-wall reclining chair

Life of this patent

Abstract

Claims5