Rocker/glider recline linkage with projected back pivot point
10653243 ยท 2020-05-19
Assignee
Inventors
Cpc classification
A47C1/0355
HUMAN NECESSITIES
International classification
A47C1/0355
HUMAN NECESSITIES
A47C1/032
HUMAN NECESSITIES
Abstract
A linkage for use in reclining furniture may include a back bracket supported by forward and rear back pivot links. The bottom of the rear back pivot link may be pivotally coupled to a rear lift link and the bottom of the forward back pivot link may be pivotally coupled to the rear lift link in a different location. A control link may be pivotally coupled on one end to one of the forward back pivot link and the rear back pivot link. The control link may pull the pivoting linkage of the back bracket and the forward and back pivot links as the overall linkage is moved from a closed to a TV to a full-recline position. The resulting pivot point for the back is projected upwardly and forwardly, to a point where an upholstered back and seat meet on a finished chair.
Claims
1. A linkage for use in reclining furniture comprising: a seat mounting plate; a back bracket; a rear lift link positioned below the back bracket, wherein the rear lift link is coupled to the seat mounting plate; a forward back pivot link pivotally coupled to the back bracket at a first pivot point and pivotally coupled at a second pivot point to one of the seat mounting plate or the rear lift link; a rear back pivot link pivotally coupled to the back bracket at a third pivot point and pivotally coupled to the rear lift link at a fourth pivot point, the third pivot point being rearward of the first pivot point, the fourth pivot point being rearward of the second pivot point; and a control link having a first end opposite a second end, the first end pivotally coupled to the forward back pivot link at a fifth pivot point, and the second end pivotally coupled to a front lift link, the fifth pivot point being intermediate to the first pivot point and the second pivot point.
2. The linkage of claim 1, wherein the linkage is configured to move between a closed position and a fully reclined position.
3. The linkage of claim 2, wherein the linkage is configured to stop at one or more intermediate points between the closed position and the fully reclined position.
4. The linkage of claim 2, whereupon movement of the linkage from the closed position to the fully reclined position, the back bracket rotates around a projected pivot point.
5. The linkage of claim 4, wherein the projected pivot point is forward and above the first pivot point when the linkage is in the closed position.
6. The linkage of claim 4, wherein the projected pivot point is rearward and above the first pivot point when the linkage is in the fully reclined position.
7. The linkage of claim 1, whereupon movement of the linkage from a closed position to a fully reclined position the forward back pivot link rotates about the second pivot point and the first pivot point moves forwardly and upwardly.
8. The linkage of claim 1, wherein the control link includes a mounting tab proximate the second end, wherein a motor is coupled to the mounting tab and is configured to move the linkage between a closed position and a fully reclined position.
9. The linkage of claim 1 further comprising: a base; a rocker cam coupled to the base; a base plate coupled to the rocker cam; a front pivot link pivotally coupled to the base plate proximate a first end of the base plate; a rear pivot link pivotally coupled to the base plate proximate a second end of the base plate, the first end being spaced apart from the second end; the rear pivot link pivotally coupled to the rear lift link; and the front pivot link pivotally coupled to the front lift link.
10. The linkage of claim 1 further comprising: a glider base; a base plate coupled to the glider base; the front lift link pivotally coupled to the base plate proximate a first end of the base plate; a rear pivot link pivotally coupled to the base plate proximate a second end of the base plate, the first end being spaced apart from the second end, the rear pivot link pivotally coupled to the rear lift link.
11. A linkage for use in reclining furniture comprising: a back bracket; a seat mounting plate; a rear lift link; a forward back pivot link pivotally coupled to the back bracket at a first pivot point and pivotally coupled to the seat mounting plate at a second pivot point; a rear back pivot link pivotally coupled to the back bracket at a third pivot point and pivotally coupled to the rear lift link at a fourth pivot point, the third pivot point being rearward of the first pivot point, the fourth pivot point being rearward of the second pivot point; and a control link having a first end opposite a second end, the first end pivotally coupled to the rear back pivot link at a fifth pivot point, and the second end pivotally coupled to the seat mounting plate, the fourth pivot point being intermediate to the second pivot point and the fifth pivot point.
12. The linkage of claim 11, wherein the rear back pivot link has a first end opposite a second end, the third pivot point is positioned proximate the first end of the rear back pivot link and the fifth pivot point is positioned proximate the second end of the rear back pivot link.
13. The linkage of claim 11, wherein the second end of the control link is pivotally coupled to a tab extending from the seat mounting plate.
Description
DESCRIPTION OF THE DRAWINGS
(1) Illustrative embodiments of the invention are described in detail below with reference to the attached drawing figures, and wherein:
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
DETAILED DESCRIPTION
(28) The subject matter of embodiments of the invention is described with specificity herein to meet statutory requirements. But the description itself is not intended to necessarily limit the scope of claims. Rather, the claimed subject matter might be embodied in other ways to include different steps, components, or combinations thereof, in conjunction with other present or future technologies. Terms should not be interpreted as implying any particular order among or between various steps herein disclosed unless and except when the order of individual steps is explicitly described.
(29) Referring to the drawings and initially to
(30) A recline mechanism 26 is coupled to each side of the rocker base 10. Only one mechanism 26 is shown in the Figures, for clarity, with the removed side being a mirror-image of the side that is shown. The recline mechanism 26 is coupled to the rocker base through a base plate 28. The base plate 28 extends upward from the rocker base and extends forwardly and rearwardly of the rocker cam 22. The base plate 28, like the remainder of the links described below is typically made from steel. The upper, rearward end of base plate 28 is pivotably coupled to a rear pivot link 30 at pivot point 32. Rear pivot link 30 has a generally triangular shape, as shown. Rearwardly and below pivot point 32 (as viewed in
(31) As best seen in
(32) As best seen in
(33) As best seen in
(34) The recline mechanism 26 described above can be implemented as a motorized or a manual version, depending on the desired end use. As a motorized version, as best seen in
(35) Recline mechanism 26 moves between the closed position of
(36) Additionally, the connection of the motor 144 as described above allows the motor to extend and retract, while staying in a lower position as compared to traditional motorized rocker recliner mechanisms. The motor 144 is coupled to the rear ottoman link 92 rather than the front ottoman link 106. This connection, along with the control link 136, and the bent rear motor tubes 152 allow the motor to travel in a less arcuate path in operation, and to stay lower throughout its actuation. The recline mechanism 26 also uses more motor stroke to extend the seat to the full-recline position, so the transition from the TV position to the full-recline position is achieved in a slow, controlled manner that is comfortable to the user.
(37)
(38) The glider base 200 is coupled to a recline mechanism 216 through a base plate 218. More specifically, the lower end of front guide link 208 and the lower end of rear guide link 212 are pivotably coupled to base plate 218 at pivot points 220 and 222, respectively. Base plate 218 thus reciprocates, or glides, with respect to glider base 200 on front and rear glide links 208, 212. A rear link 224 is pivotably coupled to the rear end of base plate 218 at pivot point 226. The upper end of rear link 224 is pivotably coupled to rear pivot link 30.
(39) On the glider mechanism, additional links are included to block the gliding motion in the TV and full-recline positions. Blocker control link 228 is pivotably coupled to footrest drive link 42 at pivot point 230. The opposite end of blocker control link 228 is pivotably coupled to a hook link 232 at pivot point 234. Hook link 232 has an L-shape, with a hook slot 236 generally mid-way along the link. The slot 236 engages a stop pin 238 to prevent gliding motion when in the TV or full-recline positions. The end of hook link 232 opposite pivot point 234 is pivotably coupled to base plate 218 at pivot point 240. A front blocker control link 242 is pivotably coupled to footrest drive link 42 at pivot point 244. The opposite end of front blocker control link 242 is pivotably coupled to a front blocker link 246 at pivot point 248. The front blocker link 246 has a wheel 250 that abuts the front glide link 208 when in the TV or full-recline position.
(40) The remainder of the recline mechanism 216 is the same as the recline mechanism 26 described above, and so it will not be described further here. The links and pivot points are labeled in the Figures with the same numbers as used above with respect to
(41)
(42)
(43) Some aspects of this disclosure have been described with respect to the illustrative examples provided by
(44) One aspect disclosed herein is directed to a linkage for use in reclining furniture. The linkage may include a back bracket and a rear lift link positioned below the back bracket. The linkage may also include a forward back pivot link pivotally coupled to the back bracket at a first pivot point and pivotally coupled at a second pivot point to one of a seat mounting plate and the rear lift link. The linkage may also include a rear back pivot link pivotally coupled to the back bracket at a third pivot point and pivotally coupled to the rear lift link at a fourth pivot point. The third pivot point may be rearward of the first pivot point and the fourth pivot point may be rearward of the second pivot point. The linkage may also include a control link having a first end opposite a second end. The first end may be pivotally coupled to the forward back pivot link at a fifth pivot point. The second end may be pivotally coupled to a front lift link. The fifth pivot point may be intermediate to the first pivot point and the third pivot point.
(45) The linkage may be configured to move between a closed position and a fully reclined position. Further, the linkage may be configured to stop at one or more intermediate points between the closed position and the fully reclined position.
(46) In aspects, upon movement of the linkage from the closed position to the fully reclined position, the back bracket rotates around a projected pivot point. The projected pivot point may be forward and above the first pivot point when the linkage is in the closed position. The projected pivot point may be rearward and above the first pivot point when the linkage is in the fully reclined position.
(47) In other aspects, upon movement of the linkage from the closed position to the fully reclined position the forward back pivot link may rotate about the third pivot point and the first pivot point may move forwardly and upwardly.
(48) The control link may include a mounting tab proximate the second end. A motor may be coupled to the mounting tab and configured to move the linkage between a closed position and a fully reclined position.
(49) When configured for use in a rocker recliner, the linkage may further include a base, a rocker cam coupled to the base and a base plate coupled to the rocker cam. A front pivot link may be pivotally coupled to the base plate proximate a first end of the base plate. Similarly, a rear pivot link may be pivotally coupled to the base plate proximate a second end of the base plate, the first end being spaced apart from the second end. The rear pivot link may be pivotally coupled to the rear lift link and the front pivot link may be pivotally coupled to the front lift link.
(50) When configured for use in a glider, the linkage may further include a glider base and a base plate coupled to the glider base. The front lift link may be pivotally coupled to the base plate proximate a first end of the base plate. A rear pivot link may be pivotally coupled to the base plate proximate a second end of the base plate, the first end being spaced apart from the second end. The rear pivot link may be pivotally coupled to the rear lift link.
(51) Another aspect disclosed herein is directed to a linkage for use in reclining furniture. The linkage may include a back bracket, a seat mounting plate, a rear lift link, a forward back pivot link, a rear back pivot link, and a control link. The forward back pivot link may be pivotally coupled to the back bracket at a first pivot point and pivotally coupled to the seat mounting plate at a second pivot point. The rear back pivot link may be pivotally coupled to the back bracket at a third pivot point and pivotally coupled to the rear lift link at a fourth pivot point. The third pivot point may be rearward of the first pivot point and the fourth pivot point may be rearward of the second pivot point. The control link may have a first end opposite a second end. The first end may be pivotally coupled to the rear back pivot link at a fifth pivot point. The second end may be pivotally coupled to the seat mounting plate. The fourth pivot point may be intermediate to the second pivot point and the fifth pivot point.
(52) In some aspects, the rear back pivot link has a first end opposite a second end. The second pivot point may be positioned proximate the first end of the rear back pivot link. The fifth pivot point may be positioned proximate the second end of the rear back pivot link. In other aspects, the second end of the control link may be pivotally coupled to a tab extending from the seat mounting plate.
(53) Another aspect disclosed herein is directed to a motor-driven seating unit. The motor-driven seating unit may include a first linkage coupled to a first side of a base unit and a second linkage coupled to a second side of the base unit opposite the first side. The first and second linkages may be configured to move between a closed position where an ottoman portion is folded and an open position where the ottoman portion is unfolded. A cross-tube may be coupled on a first end to the ottoman portion of the first linkage at a first rear ottoman link. The cross-tube may be coupled on a second end to the ottoman portion of the second linkage at a second rear ottoman link. A motor may be coupled to the cross-tube and configured to move the first and second linkages between the closed position and the open position.
(54) In some aspects, a first bracket may be coupled to the first rear ottoman link at a first pivot point. The first end of the cross-tube may be fixedly coupled to the first bracket. A first ottoman control link may be pivotally coupled to the first bracket between the first pivot point and the fixed coupling. The first ottoman control link may be pivotally coupled to a first front ottoman link of the ottoman portion of the first linkage. Further, a second bracket may be coupled to the second rear ottoman link at a second pivot point. The second end of the cross-tube may be fixedly coupled to the second bracket. A second ottoman control link may be pivotally coupled to the second bracket between the second pivot point and the fixed coupling. The second ottoman control link may be pivotally coupled to a second front ottoman link of the ottoman portion of the second linkage. A clevis may be fixedly coupled to the cross-tube and the motor may be pivotally coupled to the clevis.
(55) In other aspects, the motor includes a track and a drive block that is configured to move along the track as the first and second linkages move between the closed position and the open position. A first motor bell crank may be pivotally coupled to a first control link of the first linkage and a second motor bell crank may be pivotally coupled to a second control link of the second linkage. A rear motor tube having a third end opposite a fourth end may extend between the first and second linkages. The rear motor tube may be fixedly coupled on the third end to the first motor bell crank and fixedly coupled on the fourth end to the second motor bell crank. The rear motor tube may be pivotally coupled to the drive block. The first motor bell crank may be pivotally connected to a first seat mounting plate of the first linkage. The second motor bell crank may be pivotally connected to a second seat mounting plate of the second linkage. The motor-driven seating unit may comprise one of a rocker seating unit or a glider seating unit.
(56) Many different arrangements of the various components depicted, as well as components not shown, are possible without departing from the scope of the claims below. Embodiments of the technology have been described with the intent to be illustrative rather than restrictive. Alternative embodiments will become apparent to readers of this disclosure after and because of reading it. Alternative means of implementing the aforementioned can be completed without departing from the scope of the claims below. Certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations and are contemplated within the scope of the claims.