Patent Grant
12089742
The present invention relates generally to seating units, and relates more particularly to reclining seating units with gliding capability.
Recliner chairs and other reclining seating units have proven to be popular with consumers. These seating units typically move from an upright position, in which the backrest is generally upright, to one or more reclined positions, in which the backrest pivots to be less upright. The movement of the seating unit between the upright and reclined positions is typically controlled by a pair of matching reclining mechanisms that are attached to the seat, backrest and base of the chair.
One particularly popular reclining chair is the so-called “wall-proximity” chair. In a conventional reclining chair, as the backrest moves to the reclined position, the upper end of the backrest moves rearwardly relative to the base of the chair. As a result, typically the chair cannot be positioned such that the backrest is adjacent a wall, as the reclining backrest would strike the wall and thereby be prevented from fully reclining. A “wall-proximity” reclining chair includes some type of mechanism (typically either a linkage or a set of wheels that roll on a track) that move the seat of the chair forward relative to the base to provide additional room for the backrest to recline. Typically, such chairs are configured so that the seat and backrest move forward relative to the base when the chair moves from an upright position to a partially reclined “TV” position, in which the footrest is extended. The seat and backrest then move farther forward relative to the base as the chair from the TV position to its fully reclined position. Exemplary wall-proximity chairs are illustrated in U.S. Pat. No. 4,077,663 to Cycowicz et al., U.S. Pat. No. 4,337,977 to Rogers et al., U.S. Pat. No. 4,531,778 to Rogers, U.S. Pat. No. 4,805,960 to Tacker, U.S. Pat. No. 5,588,710 to Wiecek, and U.S. Pat. No. 5,992,930 to LaPointe et al., and in U.S. Patent Publication No. 20080036248 to Murphy et al., the disclosures of each of which are hereby incorporated herein in their entireties. A typical wall-proximity chair in its upright position can be placed with the backrest within 3 to 4 inches of an adjacent wall and still avoid striking the adjacent wall when moved to the fully reclined position.
One potential shortcoming of wall-proximity chairs is that the wall-proximity mechanism or wheel/rail system is typically somewhat complex, with multiple interconnected intricate parts. As such, production of these mechanisms can be relatively expensive. Also, the mechanisms that control the movement of wall-proximity chairs tend to be rather bulky, and therefore may be unsuitable for some specialized chairs. For example, some chairs have a “high leg” style in which the arms of the chair are raised several inches off of the underlying surface (typically between about 4 and 9 inches). It is ordinarily undesirable for portions of a reclining mechanism to be visible in the space below the chair when the chair is in the upright position, so the designers are faced with providing a reclining mechanism that folds into a relatively small package that is not visible from the side in the upright position.
As a first aspect, embodiments of the invention are directed to a wall-proximity reclining seating unit. The seating unit comprises: a frame having a back member and a pair of arms, the back member extending between the arms; a backrest; a seat; a first footrest; and a reclining mechanism connected between the frame, backrest, seat, and first footrest. The reclining mechanism comprises a series of pivotally interconnected links and is configured to move the seating unit between: (a) an upright position, in which the backrest is disposed at a first generally upright backrest angle, the seat is disposed at a first generally horizontal seat angle, and the first footrest is retracted below a forward portion of the seat, (b) a TV position, in which the backrest substantially maintains the first backrest angle, the seat is disposed at a second seat angle that is steeper than the first seat angle, the first footrest is extended in front of the seat and is generally horizontally disposed, and the seat and backrest are moved forwardly relative to the frame between about 2.5 and 4 inches; and (c) a fully reclined position, in which the backrest is disposed at a second backrest angle that is shallower than the first backrest angle, the first footrest remains extended in front of the seat, and the seat is moved forward of its position in the TV position between about 4 and 7 inches.
As a second aspect, embodiments of the invention are directed to a wall-proximity reclining seating unit, comprising: a frame having a back member and a pair of arms, the back member extending between the arms; a backrest; a seat; a first footrest; and a reclining mechanism connected between the frame, backrest, seat, and first footrest. The reclining mechanism comprises a series of pivotally interconnected links and is configured to move the seating unit between: (a) an upright position, in which the backrest is disposed at a first generally upright backrest angle, the seat is disposed at a first generally horizontal seat angle, and the first footrest is retracted below a forward portion of the seat, (b) a TV position, in which the backrest substantially maintains the first backrest angle, the seat is disposed at a second seat angle that is steeper than the first seat angle, the first footrest is extended in front of the seat and is generally horizontally disposed, and the seat and backrest are moved forwardly relative to the frame; and (c) a fully reclined position, in which the backrest is disposed at a second backrest angle that is shallower than the first backrest angle, the first footrest remains extended in front of the seat, and the seat is moved forward of its position in the TV position. The reclining mechanism includes a foundation link fixed to the frame and a carrier link pivotally attached with the foundation link, and wherein the seat includes a seat frame, and wherein (i) when the chair moves from the upright position to the TV position, the seat frame moves forwardly relative to the carrier link, and the carrier link is substantially stationary relative to the foundation link, and (ii) when the chair moves from the TV position to the fully reclined position, the carrier link moves forwardly relative to the foundation link, and the seat frame does not move substantially forwardly relative to the carrier link. The reclining mechanism further comprises a rear intermediate swing link and a front intermediate swing link, each of the rear intermediate swing link and the front intermediate swing link being directly pivotally interconnected between the carrier link and the seat frame. In the upright position, each of the rear intermediate swing link and the front intermediate swing link is inclined slightly rearwardly as it extends from the carrier link to the seat frame.
As a third aspect, embodiments of the invention are directed to a wall-proximity reclining seating unit comprising: a frame having a back member and a pair of arms, the back member extending between the arms; a backrest; a seat; a first footrest; and a reclining mechanism connected between the frame, backrest, seat, and first footrest. The reclining mechanism comprises a series of pivotally interconnected links and is configured to move the seating unit between: (a) an upright position, in which the backrest is disposed at a first generally upright backrest angle, the seat is disposed at a first generally horizontal seat angle, and the first footrest is retracted below a forward portion of the seat, (b) a TV position, in which the backrest substantially maintains the first backrest angle, the seat is disposed at a second seat angle that is steeper than the first seat angle, the first footrest is extended in front of the seat and is generally horizontally disposed, and the seat and backrest are moved forwardly relative to the frame; and (c) a fully reclined position, in which the backrest is disposed at a second backrest angle that is shallower than the first backrest angle, the first footrest remains extended in front of the seat, and the seat is moved forward of its position in the TV position. The seat frame of the seat includes an extension fixed to a rear portion thereof, and the backrest includes a backpost that is directly attached to the extension via a single pivot axis. The reclining mechanism further comprises a rear intermediate swing link and a front intermediate swing link, each of the rear intermediate swing link and the front intermediate swing link being directly pivotally interconnected between the carrier link and the seat frame. In the upright position, each of the rear intermediate swing link and the front intermediate swing link is inclined slightly rearwardly as it extends from the carrier link to the seat frame.
The present invention now is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Like numbers refer to like elements throughout. In the figures, the thickness of certain lines, layers, components, elements or features may be exaggerated for clarity. Broken lines illustrate optional features or operations unless specified otherwise.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. As used herein, phrases such as “between X and Y” and “between about X and Y” should be interpreted to include X and Y. As used herein, phrases such as “between about X and Y” mean “between about X and about Y.” As used herein, phrases such as “from about X to Y” mean “from about X to about Y.”
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Well-known functions or constructions may not be described in detail for brevity and/or clarity.
It will be understood that when an element is referred to as being “on”, “attached” to, “connected” to, “coupled” with, “contacting”, etc., another element, it can be directly on, attached to, connected to, coupled with or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being, for example, “directly on”, “directly attached” to, “directly connected” to, “directly coupled” with or “directly contacting” another element, there are no intervening elements present. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed “adjacent” another feature may have portions that overlap or underlie the adjacent feature.
The seating units illustrated and described herein comprise a plurality of pivotally interconnected links. Those skilled in this art will appreciate that the pivots between links can take a variety of configurations, such as pivot pins, rivets, bolt and nut combinations, and the like, any of which would be suitable for use with the present invention. Also, the shapes of the links may vary as desired, as may the locations of certain of the pivots. Moreover, in some instances combinations of pivot points may be replaced by equivalent structures, such as “slider-crank” configurations, like those described in B. Paul, Kinematics and Dynamics of Planar Machinery 4-21 (1979).
Referring now to the figures, a reclining wall-avoiding chair, designated broadly at 10, is shown in
The seat 20, the backrest 24 and the footrests 29a, 29b are interconnected by two mirror image reclining mechanisms 30. The mechanisms 30 are mirror images of each other about a longitudinal plane that divides the chair into left and right sides. As such, only one reclining mechanism 30 will be discussed in detail herein, with the understanding that the discussion is equally applicable to its mirror image mechanism. Also, the reclining mechanism 30 will be described first with respect to the fully reclined position (
The reclining mechanism 30 includes a foundation link 152 is fixed to the inner surface of the arm 14a to provide mounting locations for multiple links of the reclining mechanism 30. A lower rear swing link 154 is mounted to the foundation link 152 at a pivot 156 and extends forwardly and slightly upwardly therefrom. An angled upper rear swing link 158 is attached at its lower end to the lower rear swing link 154 at a pivot 160 and extends upwardly and slightly forwardly therefrom. A control link 162 is attached at its lower end to the vertex of the upper rear swing link 158 at a pivot 164 and extends upwardly and slightly forwardly to a pivot 166 with a backpost 165 fixed to the backrest 24. A saddle-shaped extension 168 is fixed to the rear end of the seat frame 22; the extension 168 is attached to the backpost 165 at a pivot 172 and to the upper end of the upper rear swing link 158 at a pivot 170.
A rear recline link 174 is attached to the foundation link 152 at a pivot 176 and extends upwardly and slightly forwardly therefrom. A transition link 178 is attached in an intermediate location to the upper end of the rear recline link 174 at a pivot 180. The lower end of the transition link 178 is attached to a carrier link 190 at a pivot 194. The upper end of the transition link 178 is attached at a pivot 184 to the rear end of a coupling link 182.
A front recline link 208 is attached at its lower end to the forward end of the foundation link 152 at a pivot 212. At its upper end, the front recline link 208 is attached to an intermediate location of a drawing link 186 at a pivot 206. The drawing link 186 is attached at its lower end to the carrier link 190 at a pivot 192. The forward end of the coupling link 182 is attached to a central position on the drawing link 186 at a pivot 189. At its upper end, the drawing link 186 is attached to a drive link 214 at a pivot 216. The drive link 214 is attached at its rear end to the foundation link 152 at a pivot 218. A rear seat swing link 196 is attached to the rear end of the carrier link 190 at a pivot 198 and to the seat frame 22 at a pivot 200. A forward seat swing link 202 is attached to the carrier link 190 at a pivot 207 and to the seat frame 22 at a pivot 204.
The reclining mechanism 30 also includes a footrest linkage 83 with a lower footrest swing link 84 that is attached to the seat frame 22 at a pivot 85 and extends forwardly therefrom. The lower footrest swing link 84 is also attached at its upper end to a footrest drawing link 138 at a pivot 145 and to a footrest drive link 140 at a pivot 141. The footrest drawing link 138 is also attached to the carrier link 190 at a pivot 146. An upper footrest swing link 88 is also attached to the seat frame 22 at a pivot 90 and extends forwardly therefrom. An upper footrest extension link 92 is attached to the forward end of the lower footrest swing link 84 at a pivot 94 and extends upwardly and forwardly therefrom. The upper footrest extension link 92 is also attached to the upper footrest swing link 88 at a pivot 93. A lower footrest extension link 96 is attached to the forward end of the upper footrest swing link 88 at a pivot 98 and extends forwardly and upwardly therefrom. A main footrest bracket 100 is attached to the forward ends of the upper footrest extension link 92 and the lower footrest extension link 96 at, respectively, pivots 102, 104. The main footrest 29a is mounted on the main footrest bracket 100 (
A lower auxiliary footrest swing link 110 is attached to the main footrest bracket 100 at the pivot 104, and an upper auxiliary footrest swing link 116 is attached to the main footrest bracket 100 at a pivot 118. An auxiliary footrest bracket 120 is attached to the front ends of the swing links 110, 116 at, respectively, pivots 122, 124. A control link 106 is attached to the forward end of the lower footrest extension link 96 at a pivot 108 and to the upper auxiliary footrest swing link 116 at a pivot 112. The auxiliary footrest 29b is mounted on the auxiliary footrest bracket 120 (
Referring still to
Operation of the chair 10 typically commences with the chair 10 in the upright position of
The chair 10 is maintained in the upright position by the actuating mechanism 130. The handle 132 is pivoted about the pivot 134 to a forward position, wherein the rear extension 132 is positioned above a recess 22b in the seat frame 22. The bell crank 136 is oriented so that the pin 136a resides in the recess 22b. This creates an “over-center” configuration between the pivots 139, 137 and 141. Tension in the spring 148 biases the actuating mechanism 130 toward the described orientation.
In some embodiments, the arrangement of the footrest mechanism 130 can enable the main and auxiliary footrests 29a, 29b to be the same (or nearly the same) width (e.g., substantially the full width of the chair 10). This arrangement is shown in
To move the chair 10 to the TV position of
In addition, rotation of the lower footrest swing link 84 creates a rearwardly-directed force on the footrest drawing link 138, which is also directed to the carrier link 190 at the pivot 146. However, the carrier link 190 is prevented from rearward movement by the weight of the occupant of the chair; thus, an oppositely-directed forward reaction force is imposed on the seat frame 22. As a result, the seat frame 22 (and the remainder of the seat 20) move forwardly relative to the carrier link 190 (and, in turn, relative to the base 12 along with the foundation link 152 mounted thereto). The forward movement of the seat frame 22 is controlled by the rear and front seat swing links 196, 202. The forward movement of the seat frame 22 also rotates the lower rear swing link 154 clockwise about the pivot 156. The rear end of the seat frame 22 descends, thereby increasing the pitch angle of the seat 20 by 2 to 10 degrees. This action ceases when a pin 22a on the seat frame 22 strikes the rear edge of the rear intermediate swing link 196.
Notably, the length and upright to slightly rearward disposition of the rear and front intermediate swing links 196, 202 enables the seat 20 to move forwardly a greater distance than previous chairs. In some embodiments, the forward movement of the seat 22 relative to the base 12 is between about 2.5 and 4 inches, which occurs with substantially no relative movement between the carrier link 190 and the base 12.
To move the chair 10 from the TV position of
In addition, because the seat frame 22 and carrier link 190 are unable to move relative to each other, forward movement of the seat frame 22 also drives the carrier link 190 forwardly relative to the foundation link 152. This movement is controlled by the rear recline link 174 and the front recline link 208, which pivot clockwise relative to the foundation link 152 about pivots 176, 212. The rotation of these recline links 174, 208 forces the carrier link 190 forward via the transition link 178 and the drawing link 186, which are attached to the carrier link 190. Forward movement of the carrier link 190 in turn moves the seat frame 22 forward. This movement continues until the rear recline link 174 contacts a pin 152a on the foundation link 152.
In moving from the TV position to the fully reclined position, the seat frame 22 moves forwardly relative to the base 12 between about 4 and 7 inches, which occurs with substantially no relative forward movement between the seat frame 22 and the carrier link 190. When this distance is combined with the forward movement of the seat frame 22 relative to the base 12 in moving from the upright position to the TV position, the total distance may be as much as 6.5 to 11 inches. Importantly, as can be seen in
It should also be noted that the illustrated chair 10 is an “off-the-ground” high-leg style, such that there is space between the lower edges of the arms 14 and the underlying floor. It can be seen that the chair 10 has wall-proximity capability while still having a reclining mechanism 30 that folds into a sufficiently small “package” that the reclining mechanism 30 is not visible from the side of the chair 10 when the chair 10 is in the upright position.
In addition, this configuration also enables the use of a deeper seat frame 22, which can provide more room front-to-back for sitting, laying down, napping, etc. Further, in some embodiments, a unitary upholstery piece (e.g., a cushion or pad) can be used to cover the seat and the footrests 29a and to attach to the footrest 29b. As an example, the pad can be attached to the rear end of the seat 20, extend forwardly to cover the seat 20, extend downwardly to cover the front surface of the main footrest 29a, and extend below the main footrest 29a and rearwardly to attach to the upper edge of the auxiliary footrest 29b. Extension/retraction of the footrests 29a, 29b and forward movement of the seat 20 are such that the pad can remain taut, but not overstretch, as these components move between positions. Such a pad is shown at 470 attached to the chair 310 discussed in connection with
Referring now to
Referring to
Also, an extension 453 is added to and extends rearwardly from the rear end of the foundation link 452. The lower rear swing link 454 is attached to the rear end of the extension 453. The upper swing link 458 is attached to the lower swing link 454 in the same manner as in the chair 10, but the upper swing link 458 is somewhat longer and more sharply angled. Also, the control link 462 (which attaches to the upper rear swing link 458 and to the backpost 465, is somewhat shorter in this embodiment.
A cross-member 455 extends between the extensions 453 on either side of the chair 310. A flange link 457 is fixed to and extends forwardly from the cross-member 455.
The linear actuator 311 includes a sleeve 312 and a reciprocating rod 313. The sleeve 312 is attached to the flange link 457 at a pivot 459. The rod 313 is attached at a pivot 461 to a finger 460 that is fixed to a cross-member 462. The cross-member 462 extends between the lower footrest swing link 384.
The linear actuator 311 and its associated links thus replace the actuating mechanism 130 of the chair 10 to move the chair 310 between the upright, TV and fully reclined positions. In the upright position of
From the TV position of
Those of skill in this art will appreciate that seating units according to embodiments of the invention may take other forms. For example, while a chair is shown herein, the reclining mechanisms 30, 300 may be employed in other seating units, such as love seats, sofas, sectional sofas, and the like.
Also, in other embodiments the actuating mechanisms may vary as desired, including both manually-operated units and other power-actuated units. For example, the “telescoping” linear actuators shown herein may be replaced by linear actuators that have a carriage that slides along a base rail. In such an embodiment, the carriage of the actuator slides forwardly to move the seating unit from the upright position to the TV and fully reclined positions. A seating unit using such a linear actuator may take advantage of the longer “stroke” to facilitate movement of the reclining mechanism.
Further, the chairs 10, 310 may have only one footrest, or may have three or more footrests in other embodiments. Other variations will be apparent to those of skill in this art.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. The invention is defined by the following claims, with equivalents of the claims to be included therein.
This application is a continuation of and claims priority to U.S. patent application Ser. No. 17/486,043, filed Sep. 27, 2021, now U.S. Pat. No. 11,638,482, which is a continuation of and claims priority to U.S. patent application Ser. No. 16/538,933, filed Aug. 13, 2019, now U.S. Pat. No. 11,140,988, which claims priority from and the benefit of U.S. Provisional Patent Application No. 62/771,321, filed Nov. 26, 2018, the disclosure of which is hereby incorporated herein by reference in full.
| Number | Name | Date | Kind |
|---|---|---|---|
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| 4077663 | Cycowicz et al. | Mar 1978 | A |
| 4337977 | Rogers et al. | Jul 1982 | A |
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| 4740031 | Rogers | Apr 1988 | A |
| 4805960 | Tacker | Feb 1989 | A |
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| 20120104827 | Murphy et al. | May 2012 | A1 |
| 20120146364 | Hoffman | Jun 2012 | A1 |
| 20130200659 | Hoffman | Aug 2013 | A1 |
| Number | Date | Country |
|---|---|---|
| 2205489 | Dec 1988 | GB |
| 0221973 | Mar 2002 | WO |
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| Number | Date | Country | |
|---|---|---|---|
| 20230255355 A1 | Aug 2023 | US |
| Number | Date | Country | |
|---|---|---|---|
| 62771321 | Nov 2018 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17486043 | Sep 2021 | US |
| Child | 18301466 | US | |
| Parent | 16538933 | Aug 2019 | US |
| Child | 17486043 | US |
