The present invention relates generally to seating units, and more particularly to seating units with. reclining capability.
Conventionally, a recliner chair will 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 synchronized reclining mechanisms that are attached to the seat, backrest and base of the chair. Many recliners will have an extendable footrest that provides support for the occupant's feet in the reclined position.
One particularly popular recliner is the “three-way” recliner, which has two reclined positions: a “TV position”, in which the footrest or ottoman of the chair is projected forwardly from the chair while the backrest remains substantially upright; and a “fully reclined position”, in which the backrest is less upright (i.e., it has been reclined to a shallower angle relative to the floor). In a “three-way” recliner, the backrest pivots relative to the seat as the chair takes its fully reclined position; this differs from a “two-way” recliner, in which the backrest and seat are rigidly fixed and do not pivot relative to one another as the chair moves to the fully reclined position. Many three-way recliners are constructed such that the backrest and footrest are coupled to one another, such that reclining of the backrest cannot occur unless the footrest is already extended (i.e., the chair is in the TV position). See, e.g., U.S. Pat. No. 4,915,444 to Rogers, Jr., and U.S. Pat. No. 6,540,291 to Hoffman, which illustrate chairs of rather contemporary style with three-way reclining capability.
As chair styles vary, providing reclining capability and/or an extendable footrest can become a challenge, particularly for chairs with smaller frames, off-the floor styles, or low seat heights. In particular, footrest extension can become an issue for some chair styles, as the ability to extend a footrest forwardly can be limited by the amount of space available beneath the seat of the chair. Such space may be limited in off-the-floor styles if the reclining mechanisms are to remain hidden when the chair is in the upright position. Also, space may be limited for a chair with a low seat height or a relatively tall base, such as one having a swivel unit. As such, it may be desirable to provide footrest extension mechanisms that can extend a footrest an adequate distance while still functioning with multiple than styles.
As a first aspect, embodiments of the invention are directed to a seating unit comprising: a frame configured to rest on an underlying surface comprising a pair of opposed anus. a seat fixed relative to the arms, and a backrest fixed relative to the arms; a footrest: and a footrest mechanism attached to the footrest and the arms. The footrest mechanism comprises a. plurality of pivotally interconnected links configured to move the footrest between a retracted position, in which the footrest is positioned beneath the seat and defines an angle of between about 20 and 40 degrees with the underlying surface, and an extended position, in which the footrest is positioned in front of the seat and is generally horizontally disposed and generally inverted from its disposition in the retracted position.
As a second aspect, embodiments of the invention are directed to a seating unit comprising: a frame configured to rest on an underlying surface comprising a pair of opposed anus. a seat fixed relative to the arms. and a backrest fixed relative to the arms; a main footrest; an auxiliary footrest; and a footrest mechanism attached to the main and auxiliary footrests and the arms. The footrest mechanism comprises a plurality of pivotally interconnected links configured to move the main and auxiliary footrests between (a) a retracted position, in which the main footrest is generally vertically disposed just forward of the seat, and the auxiliary footrest is rearward of the main footrest, and (b) an extended position, in which the main and auxiliary footrests are extended in front of the seat and are generally horizontally disposed, with the auxiliary footrest positioned in front of the main footrest.
The present invention will be described more particularly hereinafter with reference to the accompanying drawings. The invention is not intended to be limited to the illustrated embodiments; rather, these embodiments are intended to fully and completely disclose the invention to those skilled in this art. In the drawings, like numbers refer to like elements throughout. Thicknesses and dimensions of some components may be exaggerated for clarity. Well-known functions or constructions may not be described in detail for brevity and/or clarity.
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 relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
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 expression “and/or” includes any and all combinations of one or more of the associated listed items.
Where used, the terms “attached”, “connected”, “interconnected”, “contacting”, “coupled”, “mounted” and the like can mean either direct or indirect attachment or contact between elements, unless stated otherwise.
In addition, some components of the seating units described herein (particularly mechanisms thereof) are illustrated herein as a series of pivotally interconnected links or members. Those skilled in this art will appreciate that the pivots between links or other components can take a variety of configurations, such as pivot pins, rivets, bolt and nut combinations, and the like, any of which may be suitable for use with the present invention. Also, the shapes and configurations of the links themselves may vary, as will he understood by those skilled in this art. Further, some links may be omitted entirely in some embodiments, and additional links may be included in some embodiments..
Referring now to the drawings, a chair, designated broadly at 10, is illustrated in
As can be seen in
As seen in
The lower footrest extension link 48 is attached at a pivot 56 to a footrest mounting bracket 54 on which the footrest 24 is mounted. An angled crank 58 is attached at its lower end to the lower footrest extension link 48 at a pivot 60, and at its vertex to the forward end of the upper footrest extension link 44 at a pivot 62. The forward end of the crank 58 is attached to a bracing link 64 at a pivot 66; the bracing link 64 also attaches to the footrest mounting bracket 54 at a pivot 68 that is forward of the pivot 56. It can be seen in
The chair 10 includes an actuating unit 70 that has a motor 72, a sleeve 74 attached to the motor 72 and extending forwardly therefrom, and a rod 76 that retracts within and extends from the sleeve 74. The motor 72 is attached at a pivot 78 to a small bracket 80 that is. fixed to the cross-member 34. Another cross-member 82 is fixed to and extends between brackets 84 that are fixed to the lower footrest swing links 36. The front end of the rod 76 is attached at a pivot 86 to a bracket 88 that is fixed on the cross-member 82. Another cross-member 89 extends between the cranks 58.
As can be seen in
To move the footrest 24 from the retracted position of
Those of skill in this art will appreciate that one of the obstacles to designing a chair with a “tuck-under” footrest such as that depicted therein is creating a design in which (a) the footrest 24 is not visible from the side when the footrest 24 is retracted, and (b) the footrest 24 is deployed at a distance in front of the seat 22 providing adequate support for the occupant's. legs, while (c) the footrest 24 does not strike the underlying surface while being extended. Prior seating units, such as those discussed in U.S. Pat. No. 8,714,638 to Hoffman et al., rely at least partially on movement of the seat relative to the arms to provide room below the seat for the footrest to swing downwardly in moving to the extended position; more specifically, in the prior chairs the seat increases in pitch angle, the front end of the seat rises, and the seat moves. rearwardly relative to the frame in order to provide room for the footrest to swing downward and forward on its way to the fully extended position.
The desired motion of the footrest 24 can be achieved in the footrest mechanism 30 via redesigning of the links thereof. As one example, in the footrest mechanism 30, the distance between the pivots 42, 52 of the upper footrest swing link 40 are slightly farther apart from each other that are the pivots 38, 50 of the lower footrest swing link 36 (e.g., between 1 and 5 percent). This arrangement causes the lower footrest extension link 48 to delay its rotation slightly, and to accelerate its forward movement. This accelerated movement allows the upper end of the footrest 24 to clear the front end of the seat 22 even though the footrest 24 has rotated significantly. The motion of the footrest 24 throughout its movement to the extended position can be seen in
Referring now to
For clarity the footrest mechanism 183 will be described first with respect to
The footrest. linkage 183 has a foundation link 181. A lower footrest swing link 184 that is attached to the foundation link 181 at a pivot 185 and extends forwardly therefrom. An upper footrest swing link 188 is also attached to the seat 122 at a pivot 190 and extends forwardly therefrom. An upper footrest extension link 192 is attached to the forward end of the lower footrest swing link 184 at a pivot 194 and extends upwardly and forwardly therefrom. The upper footrest extension link 192 is also attached to the upper footrest swing link 188 at a pivot 193. A lower footrest extension link 196 is attached to the forward end of the upper footrest swing link 188 at a pivot 198 and extends forwardly and upwardly therefrom. A main footrest bracket 200 is attached to the forward ends of the upper footrest extension link 192 and the lower footrest extension link 196 at, respectively, pivots 202, 204. The main footrest 129a is mounted on the main footrest bracket 200 (
A lower auxiliary footrest swing link 210 is attached to the main footrest bracket 200 at the pivot 204, and an upper auxiliary footrest swing link 216 is attached to the main footrest bracket 200 at a pivot 218. An auxiliary footrest bracket 220 is attached to the front ends of the swing links 210, 216 at, respectively, pivots 222, 224. A control link 206 is attached. to the forward end of the lower footrest extension link 196 at a pivot 208 and to the upper auxiliary footrest swing link 216 at a pivot 212. The auxiliary footrest 129b is mounted on the auxiliary footrest bracket 220 (
The chair 110 includes an actuating unit 170 that has a motor 172, a sleeve 174 attached to the motor 172 and extending forwardly therefrom, and a rod 176 that retracts within and extends from the sleeve 174. The motor 172 is attached at a pivot 178 to a small bracket 180 that is fixed to a cross-member 134 that spans the foundation links 181. Another cross-member 136 is fixed to and extends between brackets 138 that are fixed to the lower footrest swing links 184. The front end of the rod 176 is attached at a pivot 156 to a bracket 158 that is fixed on the cross-member 136.
Operation of the chair 110 typically commences with the footrests 129a, 129b in the retracted position of
In some embodiments, the arrangement of the footrest mechanism 183 can enable the main and auxiliary footrests 129a, 129b to be the same (or nearly the same) width (e.g., substantially the full width of the chair 110). For example, the auxiliary footrest 129b may be nearly the same width (within 1-2 inches) as the main footrest 129a. This is due to the fact that, in the retracted position shown in
To move the footrests 129a, 129b to the extended position of
As discussed above, in prior chairs often the seat would move relative to the arms in order to allow for room below the seat and above the ground for the footrests to swing forward. Such movement is riot necessary with the footrest mechanism 183.
It should be noted that, although the auxiliary footrest 129b is shown in a generally vertical disposition in the retracted position, in other embodiments the auxiliary footrest 129b may be disposed horizontally or at a different angle relative to horizontal. Further, in other embodiments the chair 110 may include a third footrest (for example, a footrest that is positioned between the main footrest 129a and the seat 122 in the extended position.
It should also be noted that both the footrest mechanism 30 and the footrest mechanism 183 are configured to be easily installed in a chair, love seat, sofa, or other seating unit. In each instance, the respective foundation links 32, 181 can simply be mounted to the arms of the seating unit. Thus, an existing stationary seating unit design may be easily converted to a unit with an extendable footrest with minimal modification.
Although the actuating units 70, 170 are illustrated herein, other actuating units, such as those employing a worm gear or screw and a traveling chassis may also be employed.
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 recited in the claims. The invention is defined by the following claims, with. equivalents of the claims to be included therein.
The present application claims priority from and the benefit of U.S. Provisional Patent Application No. 63/193,313, filed May 26, 2021, the disclosure of which is hereby incorporated herein by reference in full.
Number | Date | Country | |
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63193313 | May 2021 | US |