BACKGROUND
Glider-recliner (glider) and rocker-recliner (rocker) chairs are generally well known in the furniture industry. The terms glider and rocker are used throughout this description to describe articles of furniture that include a reclining mechanism, either with a gliding feature or with a rocking feature. Generally rockers are chairs that allow the user to rock as well as recline and are equipped with extendable footrests. Rockers are often in the form of a plush chair, however, they might also take the form of an oversized seat, a seat-and-a-half, a love seat, a sofa, a sectional, and the like. Gliders are chairs that allow the user to reciprocate back-and-forth in a gliding motion. Gliders and rockers are known in both a manual configuration (where the user releases the mechanism from closed to TV, and moves the mechanism from TV to full recline) and a motorized version (where a motor is used to move the mechanism between the various positions).
The reclining motion is achieved in rocker and glider chairs with a linkage mechanism that is coupled to the base and/or a rocker or glider mechanism. The linkage mechanisms found in rockers and gliders in the art include a plurality of interconnected links that provide one or more mechanisms for extending a footrest, reclining the chair, and obstructing movements of the chair when in specific orientations. Typically, rockers and gliders known in the art provide three positions: an upright seated position with the footrest retracted beneath the chair, a television viewing or TV position in which the chair back is slightly reclined but still provides a generally upright position with the footrest extended, and a full-recline position in which the chair back is reclined an additional amount farther than in the TV position but still generally inclined with respect to the seat of the chair and with the footrest extended. For rockers, the chair is permitted to rock when in the closed position, and for gliders, the chair is permitted to glide when in the closed position.
These types of prior art recliner mechanisms, while functional, suffer from a number of drawbacks. One of which includes a problem known as shirt pull. Shirt pull occurs as the user reclines the back of the chair, and the chair back rotates back, but also away from the seat, increasing the distance between the bottom of the back cushion and the back of the seat cushion. This movement not only results in shirt pull, but also removes support from the lower lumbar area of the user seated in the chair. This motion is caused by a back bracket pivot point that is typically below and behind the point where the chair back cushion and the seat cushion meet. It would be desirable to provide a rocker and/or glider (whether manual or powered) having a back pivot point projected as close as possible to the point at which the bottom of the back cushion and the back of the seat cushion meet.
Further, rockers and gliders typically have different linkage configurations resulting in different parts for gliders versus rockers. It would be desirable to share as many parts as possible between rockers and gliders from a manufacturing standpoint.
In power rockers and gliders, the motor is typically connected to the front ottoman link to drive the chair from closed, to TV, to full-recline positions. This connection results in the motor traveling in an arcuate motion, and raises the motor near the bottom of the seat. It would be desirable to provide a motorized glider and rocker that allowed the motor to be mounted lower, and maintained lower throughout its movement, as well as to travel in a more-linear motion.
SUMMARY
Embodiments of the invention are defined by the claims below, not this summary. A high-level overview of various aspects of the invention are provided here for that reason, to provide an overview of the disclosure, and to introduce a selection of concepts that are further described below in the detailed-description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in isolation to determine the scope of the claimed subject matter.
In an embodiment of the invention a linkage for use in reclining furniture is described. The linkage includes a back bracket supported by forward and rear back pivot links. The bottom of the rear back pivot link is pivotably coupled to a rear lift link, and the bottom of the forward back pivot link is pivotably coupled to the rear lift link in a different location. A control link is pivotably coupled on one end to one of the forward back pivot link, or the rear back pivot link. The control link operates to pull the pivoting linkage of the back bracket, and the forward and rear back pivot links as the overall linkage is moved from a closed to a TV and 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, resulting in far less shirt pull than in previously known mechanisms and chairs. During recline, the bottom of the back of the chair will follow the user, offering full support of the user's back, even in the full-recline position.
In another embodiment, a power linkage is described having a motor mounting linkage that allows the motor to travel in a less-arcuate motion than in past mechanisms, as well as holding the motor lower in relation to the seat than in past mechanisms.
DESCRIPTION OF THE DRAWINGS
Illustrative embodiments of the invention are described in detail below with reference to the attached drawing figures, and wherein:
FIG. 1 is a perspective view of an exemplary power rocker-recliner chair base in a closed position in accordance with an embodiment of the invention;
FIG. 2 is an inside, cross-sectional view of the rocker mechanism of FIG. 1 in accordance with an embodiment of the invention;
FIG. 3 is an outside elevation view of the chair base of FIG. 1 in accordance with an embodiment of the invention;
FIG. 4 is a perspective view of the rocker chair base of FIG. 1 in a TV position in accordance with an embodiment of the invention;
FIG. 5 is an inside, cross-sectional view of the rocker mechanism of FIG. 4 in accordance with an embodiment of the invention;
FIG. 6 is an outside elevation view of the mechanism of FIG. 4 in accordance with an embodiment of the invention;
FIG. 7 is a perspective view of the rocker chair base of FIG. 1 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 8 is an inside, cross-sectional view of the rocker mechanism of FIG. 7 in accordance with an embodiment of the invention;
FIG. 9 is an outside elevation view of the mechanism of FIG. 7 in accordance with an embodiment of the invention;
FIG. 10 is a perspective view of an exemplary power glider-recliner chair base in a closed position in accordance with an embodiment of the invention;
FIG. 11 is an outside elevation view of the chair base of FIG. 10 in accordance with an embodiment of the invention;
FIG. 12 is a perspective view of the glider chair base of FIG. 10 in a TV position in accordance with an embodiment of the invention;
FIG. 13 is an outside elevation view of the mechanism of FIG. 12 in accordance with an embodiment of the invention;
FIG. 14 is a perspective view of the glider chair base of FIG. 10 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 15 is an outside elevation view of the mechanism of FIG. 14 in accordance with an embodiment of the invention;
FIG. 16 is a perspective view of an exemplary manual rocker-recliner chair base in a closed position in accordance with another embodiment of the invention;
FIG. 17 is an inside, cross-sectional view of the rocker mechanism of FIG. 16 in accordance with an embodiment of the invention;
FIG. 18 is an outside elevation view of the chair base of FIG. 16 in accordance with an embodiment of the invention;
FIG. 19 is a perspective view of the rocker chair base of FIG. 16 in a TV position in accordance with an embodiment of the invention;
FIG. 20 is an inside, cross-sectional view of the rocker mechanism of FIG. 19 in accordance with an embodiment of the invention;
FIG. 21 is an outside elevation view of the mechanism of FIG. 19 in accordance with an embodiment of the invention;
FIG. 22 is a perspective view of the rocker chair base of FIG. 16 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 23 is an inside, cross-sectional view of the rocker mechanism of FIG. 22 in accordance with an embodiment of the invention;
FIG. 24 is an outside elevation view of the mechanism of FIG. 22 in accordance with an embodiment of the invention;
FIG. 25 is a perspective view of an exemplary motorized glider chair base in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 26 is an outside elevation view of the mechanism of FIG. 25, in a closed position, in accordance with an embodiment of the invention;
FIG. 27 is a perspective view of an exemplary power rocker-recliner chair base in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 28 is a perspective view of a motor bell crank link and a strut from the rocker mechanism of FIG. 27;
FIG. 29 is an inside, cross-sectional view of the rocker mechanism of FIG. 27 in a closed position in accordance with an embodiment of the invention;
FIG. 30 is an inside, cross-sectional view of the rocker mechanism of FIG. 27 in a TV position in accordance with an embodiment of the invention;
FIG. 31 is an inside, cross-sectional view of the rocker mechanism of FIG. 27 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 32 is an outside elevation view of the rocker mechanism of FIG. 27 in a closed position in accordance with an embodiment of the invention;
FIG. 33 is an outside elevation view of the rocker mechanism of FIG. 27 in a TV position in accordance with an embodiment of the invention;
FIG. 34 is an outside elevation view of the rocker mechanism of FIG. 27 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 35 is a perspective view of an exemplary power glider-recliner chair base in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 36 is an inside, cross-sectional view of the rocker mechanism of FIG. 35 in a closed position in accordance with an embodiment of the invention;
FIG. 37 is an inside, cross-sectional view of the rocker mechanism of FIG. 35 in a TV position in accordance with an embodiment of the invention;
FIG. 38 is an inside, cross-sectional view of the rocker mechanism of FIG. 35 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 39 is an outside elevation view of the rocker mechanism of FIG. 35 in a closed position in accordance with an embodiment of the invention;
FIG. 40 is an outside elevation view of the rocker mechanism of FIG. 35 in a TV position in accordance with an embodiment of the invention;
FIG. 41 is an outside elevation view of the rocker mechanism of FIG. 35 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 42 is a perspective view of an exemplary power rocker-recliner chair base in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 43 is an inside, cross-sectional view of the rocker mechanism of FIG. 42 in a closed position in accordance with an embodiment of the invention;
FIG. 44 is an inside, cross-sectional view of the rocker mechanism of FIG. 42 in a TV position in accordance with an embodiment of the invention;
FIG. 45 is an inside, cross-sectional view of the rocker mechanism of FIG. 42 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 46 is an outside elevation view of the rocker mechanism of FIG. 42 in a closed position in accordance with an embodiment of the invention;
FIG. 47 is an outside elevation view of the rocker mechanism of FIG. 42 in a TV position in accordance with an embodiment of the invention;
FIG. 48 is an outside elevation view of the rocker mechanism of FIG. 42 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 49 is a perspective view of an exemplary power glider-recliner chair base in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 50 is an inside, cross-sectional view of the rocker mechanism of FIG. 49 in a closed position in accordance with an embodiment of the invention;
FIG. 51 is an inside, cross-sectional view of the rocker mechanism of FIG. 49 in a TV position in accordance with an embodiment of the invention;
FIG. 52 is an inside, cross-sectional view of the rocker mechanism of FIG. 49 in a fully-reclined position in accordance with an embodiment of the invention;
FIG. 53 is an outside elevation view of the rocker mechanism of FIG. 49 in a closed position in accordance with an embodiment of the invention;
FIG. 54 is an outside elevation view of the rocker mechanism of FIG. 49 in a TV position in accordance with an embodiment of the invention; and
FIG. 55 is an outside elevation view of the rocker mechanism of FIG. 49 in a fully-reclined position in accordance with an embodiment of the invention.
DETAILED DESCRIPTION
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.
Referring to the drawings and initially to FIG. 1, a rocker-recliner base 10 is shown in an upright position in accordance with an embodiment of the invention. The rocker-recliner base 10 couples together a footrest, chair back, chair arms and a chair seat of a rocker chair. For the sake of clarity, these portions of the chair are not shown. The base 10 includes a pair of spaced apart base rails 12, typically made from tubular steel. The base rails support the remainder of the base 10 above the surface on which the chair is placed. Cross tubes 14 extend between and are affixed to the base rails 12, such as by welding. A rocker assembly 16 is coupled to the cross tubes. The rocker assembly 16 includes a lower spring retainer (not shown) coupled to the cross tubes 14, a pair of springs 18 secured on their lower ends to the lower spring retainer on each side of the base 10, and secured on their upper ends to an upper spring retainer 20. The upper spring retainer 20 is coupled to a rocker cam 22. Rocker cam 22 can be made from any of a number of materials, such as wood, metal, or molded plastic. Cross rails 24 extend between the rocker cams and are coupled to the rocker cams. While the rocker base is described above, and shown in the Figures, many other configurations for a rocker assembly could be used in embodiments described below.
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 FIGS. 1-3), rear pivot link 30 is pivotably coupled to a wheel link 34 at pivot point 36. The outer end of wheel link 34 has a wheel 38 pivotably coupled to it. A wheel control link 40 is pivotably coupled to, and between, base plate 28 and wheel link 34. The wheel link 34 and wheel control link 40 operate as known in other existing mechanisms. As best seen in FIG. 3, the lower end of rear pivot link 30 is pivotably coupled to a footrest drive link 42 through a roller (not shown) that rides within a slot 44 on a sequence link 46. The opposite end of sequence link 46 is pivotably coupled to a rear lift link 48 at pivot point 50. Sequence link 46 thus extends between rear lift link 48 and rear pivot link 30, and is also coupled to footrest drive link 42.
As best seen in FIG. 2, the rear lift link 48 is pivotably coupled on its rearward end to rear pivot link 30 at pivot point 52. The opposite end of rear lift link 48 is pivotably coupled to a connector link 54 at pivot point 56. The rear lift link 48 thus extends between, and is pivotably coupled to, the rear pivot link 30 and the connector link 54. As best seen in FIG. 3, the rear lift link 48 is also pivotably coupled to a seat mounting plate 86 at pivot point 57. In some aspects, the rear lift link 48 includes a rivet 59 that is slidably received in a slot 61 formed in the seat mounting plate 86. The rivet 59 serves as a stop within the slot 61 as the recline mechanism 26 opens. With continuing reference to FIG. 3, a rear back pivot link 58 is pivotably coupled to rear lift link 48 at pivot point 60. The opposite end of rear back pivot link 58 is pivotably coupled to back bracket 62 at pivot point 64. The back bracket 62 is shaped as shown, with an upper extending leg that is used to couple the back bracket 62 to a back of the chair. The forward, lower area of back bracket 62 is pivotably coupled to an upper end of a forward back pivot link 66 and pivot point 68. The lower end of forward back pivot link 66 is pivotably coupled to rear lift link 48 at pivot point 70.
As best seen in FIG. 2, a rearward end of a control link 72 is pivotably coupled to the forward back pivot link 66 at pivot point 74. The forward end of control link 72 is pivotably coupled to a front lift link 76 at pivot point 78. The front lift link 76 is pivotably coupled on its rear end to the upper end of connector link 54 at pivot point 80. A forward end of front lift link 76 is pivotably coupled to the upper end of a front pivot link 82 at pivot point 84. Below pivot point 78, front lift link 76 is also pivotably coupled to the seat mounting plate 86 at pivot point 88 (see FIG. 3). The lower end of front pivot link 82 is pivotably coupled to base plate 28 at pivot point 90.
As best seen in FIG. 3, footrest drive link 42 extends from the connection to sequence link 46 and rear pivot link 30 forwardly and is pivotably connected on its forward end to a rear ottoman link 92 at pivot point 94. Rear ottoman link 92 is pivotably coupled on its upper end to seat mounting plate 86 at pivot point 96. The opposite end of rear ottoman link 92 is pivotably coupled to a footrest extension link 98 at pivot point 100 (see FIG. 6). The end of footrest extension link 98 opposite pivot point 100 is pivotably coupled to a mid-ottoman bracket 102 and pivot point 104. Additionally, footrest extension link 98 is pivotably coupled, generally at a mid-point, to a front ottoman link 106 at pivot point 108. Front ottoman link 106 is pivotably coupled on one end to seat mounting plate 86 at pivot point 110 (see FIG. 5), and is pivotably coupled on the other end to a wide ottoman link 112 at pivot point 114. The wide ottoman link 112 is pivotably coupled on its other end to an ottoman bracket 116 at pivot point 118. As seen in FIG. 5, a mid-point of the mid-ottoman bracket 102 is pivotably coupled to the wide ottoman link 112 at pivot point 120. A footrest control link 122 is pivotably coupled on one end to ottoman bracket 116 at pivot point 124, and is pivotably coupled on the other end to mid-ottoman bracket 102 at pivot point 126. The ottoman linkage described above can be moved from a closed position in FIGS. 1-3, to an extended position as shown in FIGS. 4-9.
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 FIGS. 1, 4, and 7, a motor tube 128 is secured to, and between, rear ottoman links 92. In some aspects, the motor tube 128 is secured directly to the rear ottoman link 92. In other aspects, such as the illustrated aspect, the motor tube 128 is secured indirectly to the rear ottoman link 92. More specifically, a motor tube link 130 is pivotably secured to the rear ottoman link 92 at pivot point 132. On the opposite end of motor tube link 130, an end cap 134 is fixedly coupled to the motor tube link 130. The end caps 134 are coupled to the motor tube 128, such as by welding. In some aspects, the end caps 134 may comprise a bracket. A control link 136 is pivotably coupled to the motor tube link 130 at pivot point 138 and pivotably coupled to the front ottoman link 106 at pivot point 140. A clevis 142 is fixedly coupled to motor tube 128 midway along motor tube 128, facilitating a pivotable coupling to one end of a motor 144. Motor 144 is also coupled to recline mechanism 26 through a drive block 146 which moves along a track 148 in relation to the motor body 150. A rear motor tube 152 is pivotably coupled to drive block 146 at pivot point 154 located below the track 148. The rear motor tube 152 is fixedly coupled on its opposite end to a motor bell crank 156. The motor bell crank 156 is pivotably coupled to control link 72 at pivot point 158. Additionally, motor bell crank 156 is pivotably coupled to seat mounting plate 86 through a strut 160 via pivot points 162 and 164, best seen in FIG. 2. The motor bell crank 156 is thus connected between the seat mounting plate 86 and the front lift link 76 through the control link 72 and the strut 160.
Recline mechanism 26 moves between the closed position of FIGS. 1-3, to the TV position of FIGS. 4-6, to the full-recline position of FIGS. 7-9. The arrangement of recline mechanism 26 provides a projected pivot point for the chair back that is close to the point at which the bottom of a chair back and the back of a seat cushion meet, when in a finished chair. In styling a finished chair, the manufacturer can design the chair back and seat such that they meet as close to this projected pivot point as possible. The back bracket 62 pivotably coupled to rear back pivot link 58 and forward back pivot link 66, moved through control link 72 by the rear pivot link 30, rear lift link 48, and front lift link 76 allow the true pivot point of back bracket 62 (in relation to the seat mounting plate 86) to be projected forwardly, and above, the actual pivotable connection of back bracket 62.
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.
FIGS. 10-15 illustrate a similar recline mechanism in use on a motorized glider, as opposed to a rocker base. Due to the novel recline mechanism, much of the same linkage can be used on a glider base as was described above for the rocker base 10. In the glider base 200, spaced apart base rails 202 are coupled to one another through cross bars 204. In some aspects, the cross bars 204 may comprise tubular steel or steel angle iron. A glide bracket 206 is fixedly coupled to a corresponding base rail 202. A front glide link 208 is pivotably coupled to the glide bracket 206 at pivot point 210, and a rear glide link 212 is pivotably coupled to the glide bracket 206 at pivot point 214.
The glider base 200 is coupled to a recline mechanism 216 through a base plate 218. More specifically, the lower end of front glide link 208 and the lower end of rear glide 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.
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.
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 FIGS. 1-9. The glider of FIGS. 10-15 has the same projected back pivot point, and low motor mount features as described above for the rocker of FIGS. 1-9.
FIGS. 16-24 illustrate an alternate embodiment of a mechanism 300, shown on a rocker base 10 constructed as described above with respect to FIGS. 1-9. Much of the mechanism 300 shares links common to those described above with respect to recline mechanism 26. The links common to mechanism 300 are labeled with the same reference numbers. Mechanism 300 is shown on a manual rocker, without any motor. Mechanism 300 could, of course, be motorized. In the embodiment of FIGS. 16-24, control link 72 is replaced with control link 302, as best seen in FIG. 18. To accommodate control link 302, rear back pivot link 304 is longer than rear back pivot link 58 of FIGS. 1-15. Rear back pivot link 304 is pivotably coupled to control link 302 at pivot point 306, to rear lift link 48 at pivot point 308, and to back bracket 62 at pivot point 310. A slightly varied seat mounting plate 312 is used in this embodiment. Seat mounting plate 312 has a downwardly extending tab 314 that is used to pivotably couple the end of control link 302 opposite pivot point 306, at pivot point 316. As the mechanism 300 moves from closed to TV to full recline, control link 302 moves back bracket 62, guided by forward back pivot link 66 and rear back pivot link 304. The mechanism 300 provides an alternate construction for projecting the back pivot point, so that the back pivots with respect to the seat in a manner similar to that described above with respect to FIGS. 1-15. Such an arrangement could also be implemented on a glider base, with similar modifications made as described above with respect to FIGS. 10-15, but using the alternative control link 302 (and the connection of the control link 302) as described in FIGS. 16-24.
FIGS. 25 and 26 illustrate another alternative embodiment of a mechanism 400, shown on a glider base 200 constructed as described above with respect to FIGS. 10-15. Much of the mechanism 400 shares links common to those described above with respect to the recline mechanism 26. The links common to mechanism 400 are labeled with the same reference numbers. Mechanism 400 is shown on a motorized glider. Mechanism 400 could, of course, be constructed as a manual glider. In the embodiment of FIGS. 25 and 26, the forward back pivot link 66 is replaced with forward back pivot link 402. Further, the seat mounting plate 86 has been replaced with seat mounting plate 404. The seat mounting plate 404 includes a tab 406 that extends below a flange of the seat mounting plate 404, as best seen in FIG. 26. As shown in FIG. 25, in this embodiment the forward back pivot link 402 connects directly to the seat mounting plate 404 at pivot point 408, as opposed to connecting to the rear lift link 48 at pivot point 70 as discussed above in reference to the recline mechanism 26. In order to accommodate the movement of the rear lift link 48, the forward back pivot 402 link may include an offset that allows the forward back pivot 402 to avoid the rear lift link 48 as the mechanism 400 moves. The mechanism 400 provides an alternate construction for projecting the back pivot point, so that the back pivots with respect to the seat in a manner similar to that described above with respect to FIGS. 10-15. Such an arrangement could also be implemented on a rocker base, with similar modifications as described above with respect to FIGS. 1-9, but using the alternative control link 302 (and the connection of the control link 302) as described in reference to FIGS. 16-24.
FIGS. 27-55 illustrate alternate embodiments of rocker-recliner and glider-recliner mechanisms. These alternate embodiments provide an increased load capacity, allowing a larger range of occupant weights to be carried in a finished seating unit. In the mechanisms discussed above, a load capacity of the mechanism was limited by the strut 160. As best seen in FIGS. 1, 4, and 7, the strut 160 is not a flat, planar link. Rather, the strut 160 includes a first planar portion and a second planar portion offset from the first planar portion at a bend. This bend allows the first planar portion of the strut 160 to couple with the motor bell crank 156 at pivot point 162 and the second planar portion of the strut 160 to couple with the seat mounting plate 86 at pivot point 164. In other words, the bend allows the strut 160 to couple with two portions of mechanism 100 that are not co-planar (i.e., the seat mounting plate 86 is offset from the motor bell crank 156). The bend in the strut 160, however, also limits the amount of force that may be applied to the strut 160. If too much force is applied, then the strut 160 can bend or twist, which may damage the mechanism 100. This can occur when the mechanism 100 is opened, at which time a force is applied from the motor bell crank 156 through the strut 160 to the seat mounting plate 86 in order to lift the seat of the seating unit up when the seating unit is moved towards the fully-reclined position. In other words, the mechanism 100 pushes off the seat mounting plate 86 through strut 160 to open the mechanism 100. Given the bend in between the two planar portions of strut 160, a moment arm is created which can bend and/or twist the strut 160 and/or other links of the mechanism 100.
In the embodiments of FIGS. 27-55, the mechanisms illustrated therein push off of a base member (e.g., base plate 28, base plate 218, etc.) through an alternative strut that is substantially flat and planar as further described below. Each of the alternative struts are pivotably coupled between a motor bell crank and a base member such that a first side of the alternative strut is adjacent the motor bell crank and a second side of the alternative strut is adjacent the base member. In other words, the alternative strut is in a plane between a plane of the motor bell crank and a plane of the base member.
FIGS. 27-34 illustrate a mechanism 500, shown on a rocker base 10 constructed as described above with respect to FIGS. 1-9. Much of the mechanism 500 is the same as that described above with respect to recline mechanism 26. The links common between recline mechanism 26 and mechanism 500 are labeled with the same reference numbers. Mechanism 500 is shown on a motorized rocker. Mechanism 500 could, of course, be manually operated. In the embodiment of FIGS. 27-34, motor bell crank 156 and strut 160 are replaced with motor bell crank 556 and strut 560. Referring to FIG. 28, the motor bell crank 556 has a generally triangular shape and is pivotably coupled to control link 72 at pivot point 158. The rear motor tube 152 is coupled to the inward facing side of the motor bell crank 556 at end cap 502. The end cap 502 may be fixedly coupled to the motor bell crank 556 through fastening holes 504 via fasteners (e.g., rivets, bolts, etc.). The strut 560 may be pivotably coupled to the motor bell crank 556 at pivot point 561. As shown, the outward facing side of the strut 560 is adjacent to the inward facing side of the motor bell crank. An opposite end of the strut 560 may be pivotably coupled to the base plate 28 at pivot point 563 (best seen in FIGS. 33 and 34). As shown, the inward facing side of the strut 560 is adjacent the outward facing side of the base plate 28. The strut 560 is a planar, flat link. This geometry allows the mechanism 500 to press against the base plate 28 through the strut 560 to lift the seat during operation without bending or twisting the strut 560.
FIGS. 35-41 illustrate a mechanism 600, shown on a glider base 200 constructed as described above with respect to FIGS. 10-15. Much of the mechanism 600 is the same as that described above with respect to recline mechanism 216. The links common between recline mechanism 216 and mechanism 600 are labeled with the same reference numbers. Mechanism 600 is shown on a motorized glider. Mechanism 600 could, of course, be manually operated. In the embodiment of FIGS. 35-41, motor bell crank 156 and strut 160 are replaced with motor bell crank 656 and strut 660. The motor bell crank 656 and strut 660 are similar to motor bell crank 556 and strut 560, except that the strut 660 is pivotably coupled to the base plate 618. This geometry allows the mechanism 600 to press against the base plate 618 through the strut 660 to lift the seat during operation without bending or twisting the strut 660.
Not only are the modified geometries of the motor bell crank and strut useful in rockers and gliders having a projected back pivot point as in mechanisms 26, 216, 500, and 600, this geometry is also useful in other recliner mechanisms including those without a projected back pivot point. For example, the mechanism 700 shown in FIGS. 42-48 coupled to a rocker base 10 and shown in FIGS. 49-55 coupled to a glider base 200 each include a motor bell crank 756 and a strut 760 that similarly is coupled between the motor bell crank 756 and either the base plate 702 of the rocker base 10 (FIGS. 42-48) or the base plate 618 of the glider base 200 (FIGS. 49-55).
A recline mechanism 700 is coupled to each side of the rocker base 10 (or glider base 200). Only one mechanism 700 is shown in the figures, for clarity, with the removed side being a mirror-image of the side that is shown. The recline mechanism 700 is coupled to the rocker base through a base plate 702. The base plate 702 extends upward from the rocker base and extends forwardly and rearwardly of the rocker cam 22. The base plate 702, like the remainder of the links described below is typically made from steel. The upper, rearward end of base plate 702 is pivotably coupled to a rear pivot link 704 at pivot point 703. Rear pivot link 704 has a generally triangular shape, as shown. Rearwardly and below pivot point 703 (as viewed in FIG. 45), rear pivot link 704 is pivotably coupled to a wheel link 705 at pivot point 706. The outer end of wheel link 705 has a wheel 707 pivotably coupled to it. A wheel control link 708 is pivotably coupled to, and between, base plate 702 and wheel link 705. The wheel link 705 and wheel control link 708 operate as known in other existing mechanisms. The lower end of rear pivot link 704 is pivotably coupled to a footrest drive link 709 through a roller (not shown) that rides within a slot 710 on a sequence link 711. The opposite end of sequence link 711 is pivotably coupled to a rear lift link 712 at pivot point 713. Sequence link 711 thus extends between the rear lift link 712 and rear pivot link 704, and is also coupled to footrest drive link 709.
As best seen in FIG. 45, the rear lift link 712 is pivotably coupled on its rearward end to rear pivot link 704 at pivot point 714. The opposite end of rear lift link 712 is pivotably coupled to a connector link 715 at pivot point 716. The rear lift link 712 thus extends between, and is pivotably coupled to, the rear pivot link 704 and the connector link 715. As best seen in FIGS. 46-48, the rear lift link 712 is also pivotably coupled to a seat mounting plate 717 at pivot point 718. With continuing reference to FIGS. 42-48, a rear back pivot link 719 is pivotably coupled to rear lift link 712 at pivot point 720. The opposite end of rear back pivot link 719 is pivotably coupled to back bracket 721 at pivot point 722. The back bracket 721 is shaped as shown, with an upper extending leg that is used to couple the back bracket 721 to a back of the chair. The forward, lower area of back bracket 721 is pivotably coupled to an upper end of a back connection bracket 723 at pivot point 724. The lower end of the back connection bracket 723 is fixedly coupled to the seat mounting plate 717. Thus, this geometry does not have a projected back pivot point, rather the back bracket 721 pivots around pivot point 724 in a traditional sense.
As best seen in FIG. 45, a front lift link 725 is pivotably coupled on its rear end to the upper end of the connector link 715 at pivot point 726. A forward end of front lift link 725 is pivotably coupled to the upper end of a front pivot link 727 at pivot point 728. Below pivot point 726, the front lift link 725 may optionally be pivotably coupled to the seat mounting plate 717 at pivot point 725A (seen in FIG. 46). The lower end of front pivot link 727 is pivotably coupled to the base plate 702 at pivot point 729.
As best seen in FIG. 45, footrest drive link 709 extends from the connection to sequence link 711 and rear pivot link 704 forwardly and is pivotably connected on its forward end to a rear ottoman link 730 at pivot point 731. Rear ottoman link 730 is pivotably coupled on its upper end to seat mounting plate 717 at pivot point 732. The opposite end of rear ottoman link 730 is pivotably coupled to a footrest extension link 733 at pivot point 734 (see FIG. 47). The end of footrest extension link 733 opposite pivot point 734 is pivotably coupled to a mid-ottoman bracket 735 and pivot point 736. Additionally, footrest extension link 733 is pivotably coupled, generally at a mid-point, to a front ottoman link 737 at pivot point 738. Front ottoman link 737 is pivotably coupled on one end to seat mounting plate 717 at pivot point 739, and is pivotably coupled on the other end to a wide ottoman link 740 at pivot point 741. The wide ottoman link 740 is pivotably coupled on its other end to an ottoman bracket 742 at pivot point 743 (see FIG. 47). As seen in FIGS. 45 and 48, a mid-point of the mid-ottoman bracket 735 is pivotably coupled to the wide ottoman link 740 at pivot point 744. A footrest control link 745 is pivotably coupled on one end to ottoman bracket 742 at pivot point 746, and is pivotably coupled on the other end to mid-ottoman bracket 735 at pivot point 747. The ottoman linkage described above can be moved from a closed position in FIGS. 43, 46, 50, and 53, to an extended position as shown in FIGS. 42, 44, 45, 47-49, 51, 52, 54, and 55.
The recline mechanism 700 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 FIGS. 42 and 49, a motor tube 128 is secured to, and between, rear ottoman links 730. More specifically, a motor tube link 748 is pivotably secured to the rear ottoman link 730 at pivot point 749. On the opposite end of motor tube link 748, an end cap 134 is fixedly coupled to the motor tube link 748. The end caps 134 are coupled to the motor tube 128, such as by welding. A control link 750 is pivotably coupled to the motor tube link 748 at pivot point 751, and pivotably coupled to the front ottoman link 737 at pivot point 752. A clevis 142 is fixedly coupled to motor tube 128 midway along motor tube 128, facilitating a pivotable coupling to one end of a motor 144. Motor 144 is also coupled to recline mechanism 700 through a drive block 146 which moves along a track 148 in relation to the motor body 150. A rear motor tube 152 is pivotably coupled to drive block 146 at pivot point 154 located below the track 148. The rear motor tube 152 is fixedly coupled on its opposite end to a motor bell crank 756. The motor bell crank 756 is pivotably coupled to front lift link 725 at pivot point 757 (best seen in FIGS. 43-45). Additionally, motor bell crank 756 is coupled to the base plate 702 through a strut 760 via pivot points 762 (best seen in FIG. 45) and 764 (best seen in FIG. 48). The motor bell crank 756 and the strut 760 are substantially similar to the motor bell crank 556 and 656 and strut 560 and 660.
Recline mechanism 700 moves between the closed position of FIGS. 43, 46, 50, and 53, to the TV position of FIGS. 44, 47, 51, and 54, to the full-recline position of FIGS. 42, 45, 48, 49, 52, and 55.
When implemented on a glider-recliner, as in FIGS. 49-55, the recline mechanism 700 does not include the wheel link 705, the wheel 707, or the wheel control link 708. Instead, the glider base 200 includes means for locking the glider in position when the recline mechanism is not in the closed position (i.e., moved to or towards the TV position or full-recline position). For example, the glider base may include a rear blocker control link 802, a front blocker control link 804, the base plate 618, and any additional links necessary to preventing gliding movement when the chair is opened, as is known in the art.
As seen in FIGS. 49-55, additional links are included to block the gliding motion in the TV and full-recline positions. For example, a front blocker cam 806 and a rear blocker cam 808 move between a disengaged position when the recline mechanism 700 is in the closed position (as seen in FIG. 53) and an engaged position when the recline mechanism 700 is in the TV or full-recline position (as seen in FIGS. 54 and 55). When in the engaged position, the front blocker cam 806 and the rear blocker cam 808 engage a stop pin 810 affixed to the rear glide link 212. In aspects, the front blocker cam 806 is pivotably coupled the base plate 618 at pivot point 812. One end of the front blocker cam 806 may be pivotably coupled to the front blocker control link 804 at pivot point 814 and the other end of the front blocker cam 806 may be configured to engage the stop pin 810. The front blocker control link 804 may be pivotably coupled on the opposite end to the footrest drive link 709. Thus, when the footrest is extended, the front blocker cam 806 is moved to the engaged position and engages the stop pin 810. Likewise, the rear blocker cam 808 may be pivotably coupled to the base plate 618 at pivot point 816. One end of the rear blocker cam 808 may be pivotably coupled to the rear blocker control link 802 at pivot point 818 and the other end of rear blocker cam 808 may be configured to engage the stop pin 810. The rear blocker control link 802 may be pivotably coupled on the opposite end to the rear pivot link 704 at pivot point 820. Thus, when the recline mechanism 700 moves to TV position from the closed position, the rear blocker cam 808 is moved to the engaged position and engages the stop pin 810. This double blocking cam assembly may be favorable to a single cam assembly (such as that described in reference to FIGS. 10-15) because it eliminates some components (e.g., front blocker control link 242 and front blocker link 246) and improves functionality (e.g., eliminates a bump experienced by an occupant of the seating unit when the hook link 232 is temporarily misaligned with the stop pin and then drops down onto the stop pin and also eliminates the risk that a motorized recline linkage may damage the front blocker control link 242, the front blocker link 246, or the pin they push against when the hook link 232 is temporarily misaligned with said respective stop pin).
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/glider recliner mechanisms. The motor 144 is coupled to the rear ottoman link 730 rather than the front ottoman link 737. This connection, along with the control link 750, 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 700 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.
Some aspects of this disclosure have been described with respect to the illustrative examples provided by FIGS. 1-55. Additional aspects of the disclosure will now be described that may relate to subject matter included in one or more claims of this application, or one or more related applications, but the claims are not limited to only the subject matter described in the below portions of this description. These additional aspects may include features illustrated by FIGS. 1-55, features not illustrated by FIGS. 1-55, and any combination thereof. When describing these additional aspects, reference may or may not be made to elements depicted by FIGS. 1-55.
One aspect disclosed herein is directed to a linkage for use in reclining furniture. The linkage may include a motor bell crank, a motor tube coupled to the motor bell crank, a base plate, and a strut having a first end opposite a second end. The strut may be pivotably coupled proximate the first end to the motor bell crank and pivotably coupled proximate the second end to the base plate.
In some aspects, the base plate comprises a rocker-recliner linkage base plate. In other aspects, the base plate comprises a glider-recliner linkage base plate. The linkage may also comprise the motor bell crank having an inward facing surface, the base plate having an outward facing surface, and the strut having a strut inward facing surface and a strut outward facing surface. The strut inward facing surface may be adjacent to the outward facing surface of the base plate and the strut outward facing surface may be adjacent to the inward facing surface of the motor bell crank.
In other aspects, the linkage may further comprise the motor bell crank being substantially planar and positioned in a first plane, the strut being substantially planar and positioned in a second plane, and the base plate being substantially planar and positioned in a third plane. The second plane may be positioned between the first plane and the third plane. The first plane, the second plane, and the third plane may each be parallel to one another. In aspects, the motor bell crank may be pivotably coupled with a front lift link. The linkage may also include a back bracket that pivots relative to a seat mounting plate about a projected pivot point. The projected pivot point may be forward and above a rearward end of the seat mounting plate. In still other aspects, the linkage may further comprise a rear lift link positioned below the back bracket, a forward back pivot link pivotably coupled to the back bracket at a first pivot point and pivotably coupled at a second pivot point to one of a seat mounting plate and the rear lift link, a rear back pivot link pivotably coupled to the back bracket at a third pivot point and pivotably 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 pivotably coupled to the forward back pivot link at a fifth pivot point, and the second end pivotably coupled to a front lift link, the fifth pivot point being intermediate to the first pivot point and the third pivot point.
Another aspect is directed to a motor-driven seating unit. The motor-driven seating unit may comprise a first linkage coupled to a first side of a base unit, 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. The motor-driven seating unit may also comprise a cross-tube coupled on a first end to the ottoman portion of the first linkage at a first rear ottoman link, the cross-tube coupled on a second end to the ottoman portion of the second linkage at a second rear ottoman link, and a motor coupled to the cross-tube and configured to move the first and second linkages between the closed position and the open position.
In some aspects, the motor-driven seating unit may further comprise a first bracket coupled to the first rear ottoman link at a first pivot point, the first end of the cross-tube fixedly coupled to the first bracket, a first ottoman control link pivotably coupled to the first bracket between the first pivot point and the fixed coupling, the first ottoman control link pivotably coupled to a first front ottoman link of the ottoman portion of the first linkage, a second bracket coupled to the second rear ottoman link at a second pivot point, the second end of the cross-tube fixedly coupled to the second bracket, a second ottoman control link pivotably coupled to the second bracket between the second pivot point and the fixed coupling, and the second ottoman control link pivotably coupled to a second front ottoman link of the ottoman portion of the second linkage.
In aspects, the motor-driven seating unit may include a clevis fixedly coupled to the cross-tube, and the motor is pivotably coupled to the clevis. The motor may also include 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.
The motor-driven seating unit may further comprise a first motor bell crank pivotably coupled to a first control link of the first linkage, a second motor bell crank pivotably coupled to a second control link of the second linkage, and a rear motor tube having a third end opposite a fourth end, the rear motor tube extending between the first and second linkages and 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 being pivotably coupled to the drive block. In some aspects, the first motor bell crank is pivotably coupled to a first end of a first strut, and a second end of the first strut is pivotably coupled with a first seat mounting plate of the first linkage, and the second motor bell crank is pivotably coupled with a first end of a second strut, and a second end of the second strut is pivotably coupled with a second seat mounting plate of the second linkage.
The motor-driven seating unit may further comprise a first motor bell crank pivotably coupled to a first lift link of the first linkage, a second motor bell crank pivotably coupled to a second lift link of the second linkage, and a rear motor tube having a third end opposite a fourth end, the rear motor tube extending between the first and second linkages and 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 being pivotably coupled to the drive block. In other aspects, the first motor bell crank may be pivotably coupled to a first end of a first strut, and a second end of the first strut may be pivotably coupled with a first base plate of the first linkage, the second motor bell crank may be pivotably coupled with a first end of a second strut, and a second end of the second strut may be pivotably coupled with a second base plate of the second linkage. The first strut and the second strut may each be planar links. The seating unit may comprise a rocker-recliner seating unit or a glider-recliner seating unit, in accordance with some aspects.
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.
Patent Grant
11266245
