Furniture member having flexible seatback

Patent metadata

Field	Value
Publication number	US-10537178-B2
Application number	US-201715481642-A
Country	US
Kind code	B2
Filing date	Apr 7, 2017
Priority date	Apr 7, 2017
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A furniture member may include a stationary seatback frame, a seat bottom assembly, a legrest mechanism, and a backrest support spring. The seat bottom assembly is movable relative to the seatback frame between a nominal position and a tilt position. The legrest mechanism is movable among a retracted position, a first extended position and a second extended position. A portion of the legrest mechanism contacts the seat bottom assembly when the legrest mechanism is in the first extended position and pushes the seat bottom assembly from the nominal position to the tilt position as the legrest mechanism moves from the first extended position to the second extended position. The backrest support spring includes a first end attached to the seatback frame and a second end attached to the seat bottom assembly and movable with the seat bottom assembly relative to the seatback frame.

First claim

What is claimed is:

1. A furniture member comprising:
a stationary frame assembly including a base frame and a seatback frame that is fixed relative to the base frame;
a seat bottom assembly supported by the base frame and movable relative to the base frame and the seatback frame between a nominal position and a tilt position;
a legrest mechanism supported by the base frame and movable relative to the base frame and the seatback frame among a retracted position, a first extended position and a second extended position, wherein a portion of the legrest mechanism contacts the seat bottom assembly when the legrest mechanism is in the first extended position and pushes the seat bottom assembly from the nominal position to the tilt position as the legrest mechanism moves from the first extended position to the second extended position; and
a backrest support spring having a first end and a second end, the first end attached to the seatback frame, the second end attached to the seat bottom assembly and movable with the seat bottom assembly relative to the base frame and the seatback frame.

2. The furniture member of claim 1 , wherein the backrest support spring has a first shape when the seat bottom assembly is in the nominal position and has a second shape when the seat bottom assembly is in the tilt position.

3. The furniture member of claim 1 , wherein the base frame and the seatback frame remain stationary relative to a ground surface upon which the furniture member is disposed during movement of the seat bottom assembly between the nominal and tilt positions and during movement of the legrest mechanism among the retracted, first extended and second extended positions.

4. The furniture member of claim 1 , further comprising a plurality of backrest support springs having first ends attached to the seatback frame and second ends attached to the seat bottom assembly.

5. The furniture member of claim 1 , wherein the legrest mechanism includes:
a first support member;
a second support member;
a legrest platform attached to first ends of the first and second support members and rotatable relative to the first and second support members between a deployed position and a stowed position, wherein the legrest platform is in the deployed position when the legrest mechanism is in the first and second extended positions, and the legrest platform is in the stowed position when the legrest mechanism is in the retracted position;
torsion springs engaging the legrest platform and the first and second support members and rotationally biasing the legrest platform toward the deployed position; and
a cross member attached to second ends of the first and second support members.

6. The furniture member of claim 5 , further comprising a motor assembly mounted to the base frame and including a block that moves relative to the base frame along a guide rail, wherein the block is attached to the cross member and moves the cross member and the first and second support members among the retracted position and the first and second extended positions.

7. The furniture member of claim 6 , wherein the first and second support members include first and second inserts, respectively, and first and second springs, respectively,
wherein the first insert is slidably received within the first support member through an opening at the second end of the first support member, the first insert is rotatably coupled to the cross member, the first spring is disposed within the first support member, the first spring is attached at one end to the first insert and is attached at another end to the first support member, the first spring biases the first insert toward the first end of the first support member, and
wherein the second insert is slidably received within the second support member through an opening at the second end of the second support member, the second insert is rotatably coupled to the cross member, the second spring is disposed within the second support member, the second spring is attached at one end to the second insert and is attached at another end to the second support member, the second spring biases the second insert toward the first end of the second support member.

8. The furniture member of claim 7 , wherein the first and second inserts are rotatably connected to the cross member by first and second pins, respectively, the first pin extends through a cutout in the first support member, and the second pin extends through a cutout in the second support member.

9. The furniture member of claim 8 , wherein the first and second springs include cables that limit an amount that the first and second springs can stretch, thereby limiting a range of motion of the first and second support members relative to the first and second inserts.

10. The furniture member of claim 5 , wherein the seat bottom assembly includes first and second cams that include inclined surfaces that engage and move along rollers mounted to the base frame, wherein the rollers are in contact with first ends of the inclined surfaces when the seat bottom assembly is in the nominal position, and wherein the rollers are in contact with second ends of the inclined surfaces when the seat bottom assembly is in the tilt position.

11. The furniture member of claim 10 , wherein the legrest mechanism includes first and second spring-loaded bumpers that come into contact with the first and second cams, respectively, when the legrest mechanism moves from the retracted position to the first extended position, and wherein the first and second spring-loaded bumpers transmit motion of the legrest mechanism to the seat bottom assembly such that movement of the legrest mechanism into the second extended position moves the seat bottom into the tilt position.

12. The furniture member of claim 11 , wherein springs of the spring-loaded bumpers compress from a first length to a shorter second length during initial movement of the legrest mechanism from the first extended position toward the second extended position such that the spring-loaded bumpers transmit motion of the legrest mechanism to the seat bottom assembly only when the springs are at the second length.

13. The furniture member of claim 1 , wherein the legrest mechanism moves relative to the seat bottom assembly between the first and second extended positions.

14. The furniture member of claim 1 , wherein the legrest mechanism does not move relative to the seat bottom assembly as the legrest mechanism moves between the first and second extended positions.

15. The furniture member of claim 1 , wherein the legrest mechanism is movably supported by the seat bottom assembly.

16. The furniture member of claim 1 , wherein the legrest mechanism can be moved to and maintained at any position between the retracted position and the second extended position, and wherein the seat bottom assembly can be moved to and maintained at any position between the nominal position and the tilt position.

17. The furniture member of claim 1 , further comprising:
a pulley mounted to the stationary frame assembly; and
a cable engaging the pulley and having a first end connected to the seat bottom assembly and a second end connected to an intermediate portion of the backrest support spring, the intermediate portion is disposed between the first and second ends of the backrest support spring, and
wherein movement of the seat bottom assembly toward the tilt position causes the cable to move the intermediate portion of the backrest support spring relative to the first and second ends of the backrest support spring, thereby elasticall

Assignees

• La Z Boy Inc

Inventors

• Marshall Richard E
• Cole Ii Eugene O
• Ramasubramanian Chandrasekar
• Brown Stephen Andrew
• Rains Jason
• Bryson Jason

Classifications

• A47C7/445

  with bar or leaf springs · CPC title

• A47C1/0352 Primary

  characterised by coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers · CPC title

• A47C1/0355 Primary

  actuated by linkages, e.g. lazy-tongs mechanisms · CPC title

• A47C17/04

  {Seating furniture, e.g.} sofas, couches, settees, or the like, with movable parts {changeable to beds}; Chair beds · CPC title

• A47C7/40

  for the back · CPC title