US3571827A - Folding bed linkage - Google Patents

Folding bed linkage Download PDF

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Publication number
US3571827A
US3571827A US791475*A US3571827DA US3571827A US 3571827 A US3571827 A US 3571827A US 3571827D A US3571827D A US 3571827DA US 3571827 A US3571827 A US 3571827A
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bedframe
linkage
section
support
link
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US791475*A
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Walter Clark Rogers Jr
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ROYAL DEV CO
ROYAL DEVELOPMENT Co Inc
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ROYAL DEV CO
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C17/00Sofas; Couches; Beds
    • A47C17/38Wall beds
    • A47C17/48Wall beds characterised by two or more relatively-movable mattress-support parts

Definitions

  • Nunberg Attorney-Beveridge & DeGrandi ABSTRACT A folding bedframe incliiding front and rear frame sections movable between a retracted vertical position wherein the bed frames are in generally parallel relationship, and an extended horizontal position wherein the bedframe sections are in generally coplanar relationship with the front bedframe section projected forwardly from the rear bedframe section.
  • a first linkage mounts the rear frame section to an anchor means for swinging movement between a retracted vertical position and an extended horizontal position.
  • Support for the rear frame section while in the horizontal position is provided by a second linkage pivotally connected to the anchor means for movement independently of the first linkage between a retracted position, and an extended position resting on the floor with the rear frame section engaged thereon.
  • the front frame section is supported on the floor by means of a link which pivots into engagement on the floor when the front frame section is fully extended.
  • PATENTEDMAR-23l97l- SHEET- 1 BF 5 WALTER C. ROGERS Jr.
  • This invention generally pertains to folding beds and more specifically to a new and improved folding bedframe assembly and included linkage having particular utility in connection with beds which fold into an enclosure such as a cabinet, chest or wall although the present invention is not limited thereto.
  • One of the objects of the present invention is to provide a new and improved folding bedframe assembly including a new and improved linkage for supporting and moving the assembly between a retracted storage position and an extended use position. Include herein is the provision of such a linkage that has a relatively simple and compact construction and yet provides ample support for the bedframe and is moreover easily maneuverable between retracted and extended positions.
  • the above objects are achieved by means of a pair of generally rectangular front and rear bedframe sections which are interconnected by a linkage for movement between a retracted parallel position and an extended use position wherein the front bedframe section projects forwardly from the rear bedfrarne section in generally coplanar relationship.
  • the rear bedframe section is mounted by means of a linkage to a fixed support or anchor means for movement between a vertical, retracted position and an extended, horizontal position.
  • a main support linkage which is pivotally connected to the stationary support or anchor means for movement between a retracted position and an extended position underlying and supporting the rear bedframe section.
  • the main support linkage is separate from the linkage which mounts the rear bedfrarne section to the anchor means. in unfolding the assembly, the main support linkage is first unfolded into the extended position and then the rear bedframe section is unfolded into horizontal position resting on the main support linkage with the front frame section still in retracted parallel position but overlying the rear frame section. The front frame section is then unfolded relative to the rear section into horizontal position forwardly of and in coplanar relationship with the bed rear-bed rear-frame section.
  • FIG, l is a side elevational view of a bedframe assembly embodying the present invention shown in fully folded or retracted position in an enclosure which is shown in cross section;
  • FIG. 2 is a view generally similar to H6. l but with a main support linkage included in the assembly, shown in a partially unfolded position projecting out of the enclosure;
  • FIG. 3 is a view generally similar to H6. 2 but with the main support linkage in the fully unfolded or extended position wherein it rests on the floor;
  • H0. 4 is a view generally similar to FIG. 3 but with bedframe sections included in the assembly shown in a partly extended position projecting out of the enclosure;
  • Fit 7 is a view generally similar to Fill. it but with the bedframe sections in the fully unfolded or extended position;
  • FIG. 8 is a fragmental, perspective view of the bedframe as sembly when in the fully extended or unfolded position and with one of the bedframe sections omitted.
  • a bedframe assembly embodying the present invention including front and rear bedframe sections generally designated ill and 32 which are movable between a fully folded or retracted position shown in Fifi. l, and a fully extended or unfolded position shown in Fig. '7.
  • Bedframc sections ill and 12 per se may have a conventional rectangular construction formed by tubular steel side members l4 interconnected by tubular steel end members to and ill illustrated in FIG. 8.
  • a conventional mattress designated 20 is supported on the bedframes by means ofa conventional wire spring (not shown) secured to the bedframe sections.
  • Typical mattress stops 22 may be fixed to the ends of the bedframc sections as illustrated in H65. 2 and d. 1
  • Anchor members 34 and 36 may be formed by elongated steel bars, with one pair of anchor members being fixed to one side panel 2% such as with screws 38 and the other pair similarly fixed to the other side panel 23.
  • anchor bar 3d includes a lower portion ill and an upper portion 42 extending at an obtuse angle of approximately l l5 with respect to the lower portion.
  • the other anchor bar 36 similarly includes lower and upper portions 44 and 46, however the angular interrelationship in this instance is approximately The relative position between the anchor bars when fixed to side panel 28 is clearly shown in the drawings.
  • anchor bars 34 as engage the floor and this auto matically positions them at the proper elevation along side panels 23.
  • anchor bars 3 36 need not be positively attached to the side panels 2% ⁇ but instead may be freestanding.
  • anchor bars 34 as will be fixed against movement relative to each other by pivot pins ill, 5b which connect the anchor bars at their points of intersection.
  • main support linkage generally designated 60
  • bedframe linkage generally designated 62
  • Main support linkage 62 includes an elongated generally rectilinear main support link 64 having one end pivotally connected by pivot 66 to anchor bar as just below the bite section 52 of the latter for movement between a fully retracted or folded vertical position in the enclosure (see FIG. 1) and a fully extended or unfolded position projecting outwardly of the enclosure (see FIGS. 3 and 5).
  • Main support link 64 thus provides a main support leg, the free end 63 of which is free to engage the floor when in the fully extended position.
  • auxiliary support link generally designated 78 having one end pivotally connected by pivot 72 to an intermediate portion of main support link 64 and an opposite end fixed to a crossbar 74 which extends across the assembly to receive rear bedframe section 12 as shown in FIGS. 5 and S.
  • crossbar 74 extends between and is fixed to the upper ends of auxiliary support links '70 at opposite ends of the assembly.
  • resilient bumper members '76 may be fixed to the opposite side members 14 of rear bedframe section A2 to be engageable on the crossbar 74' as shown in FIG. 5.
  • a depending arm 78 may be fixed to the underside of side members 14 to hook over crossbar 74 as shown in FIG. 5.
  • auxiliary support link 70 is formed in two parts 71 and '73 which extend at an angle of approximately 135 with respect to each other;
  • pivot 82 is located intermediate the ends of upper part 73.
  • auxiliary support link 70 also allows its upper part 73 to extend upwardly sufficiently to permit crossbar 74 to engage the underside of rear bedframe section 12.
  • links 90, 92 form swing arms for rear bedframe section 12 for projecting the latter out of the enclosure relative to the anchor bars.
  • bedframe section K2 is free to pivot about pivots 96 and res relative to links 90 and 92 to enable the bedframe section 12 to move between the vertical retracted position shown in FIG. I and the horizontal extended position shown in FIG. 5.
  • crossbar I8 is merely pulled forwardly away from the enclosure which causes links 90, 92 to swing counterclockwise about their pivots 48, 94 while at the same time causing bedframe section 12 to pivot clockwise relative to the links 99, 92 as illustrated in FIG. 4.
  • links 90, 92 to swing counterclockwise about their pivots 48, 94 while at the same time causing bedframe section 12 to pivot clockwise relative to the links 99, 92 as illustrated in FIG. 4.
  • the next unfolding step is to move front mattress section l0 relative to rear section 12 into the fully extended position shown in FIG. 7.
  • Link llli is pivotally connected to side member l of bedframe sections it) and 12 by means ofpivots H4 and 116.
  • the position of pivot 116 in the shown embodiment is determined by means of an arm H8 rigidly fixed to front section iii to receive pivot 216.
  • the other link H2 is pivotally connected to side member 14 of frame sections l0. l2 by pivots 126, 122.
  • link 13 3 moves in the clockwise direction upon unfolding of front bedfrarne section lb, link 13 3 will be drawn downwardly to pivot and unfold front support leg l3 relative to the front bedframe section.
  • Link 1334 also serves to lock front support leg H30 in the extended position engaged on the floor. in the extended horizontal position front beclframe section lll) is thus supported by means of leg 130 and also by means of its connection through crisscross links llltl and M2 to rear mattress section HE.
  • a crossbar Mill is preferably provided between front support legs l3il of each linkage for stability and also to insure they move in unison during folding and unfolding.
  • Crisscross links lid and 112 coupled with leg 130 and control link 13 3 also serve to lock sections ill and i2 in their closed'(parallel) position, which is required because of the varying resistance to compression afforded by mattresses.
  • pivots R36, 132 and 138 When pivots R36, 132 and 138 are operated into alignment with each other, a condition of rigid triangulation is set up involving pivotal triangle 132, 138 and lid thus preventing relative movement between ill) and It) and consequently preventing operation of the crisscross linkage.
  • Crossmember Mill in this instance serves as a stop to prevent further movement of leg 13!) relative to section 10.
  • bedfrarne linkage means includes two links adapted to be connected at their opposite ends to said bedframe and said anchor means.
  • said support linkage means includes a main support leg having one end adapted to be connected to said anchor means and another end adapted to engage the floor when the support linkage means is in the extended position, an auxiliary support link having one end connected with respect to an intermediate portion of said main support leg and an opposite end adapted to engage below the bedframe when the bedframe is in the horizontal position, and a locking link having one connected to an intermediate portion of said auxiliary support link and an opposite end adapted to be connected to the anchor means.
  • said support linkage means includes a main support leg having one end adapted to be connected to said anchor means and another end adapted to engage the floor when the support linkage is in the extended position, an auxiliary support link having one end connected with respect to an intermediate portion of said main support leg and another end adapted to engage below the bedframe when the bedframe and main support linkage means are in the extended positions, and a locking link having one end connected to an intermediate portion of said auxiliary support link and another end adapted to be connected to said anchor means.
  • said interconnecting linkage means includes a pair of links having their opposite ends pivotally connected to said bcdframe sections such that when the bedframc sections are in parallel relationship, said pair of links cross each other and maintain said bedframe sections against movement towards each other.
  • the combination defined in claim 7 further including a second support leg having one end pivotally connected to said second bedframe section for movement between a retracted position adjacent the plane of said second bedframe section and. an extended position projecting downwardly from said second bedfrerne section int; engagement with the floor, and an actuating link having one end pivotally connected to an intermediate portion of said second support leg and an opposite end pivotally connected to one of said pair of links so as to be operated by the latter upon movement of the second bedframe section into fully extended position to thereby actuate said second support leg into extended position in engagement with the floor.
  • a second bedframe section and interconnecting linkage means connected between said first and second bedframe sections to mount the second bedfrarne section for movement between a retracted position generaily in parallel relationship with said first bedframe section and an extended position forwardly of said first bedframe section and in generally coplanar relationship therewith.
  • said bedframe linkage means further includes a third link having one end pivotally connected to said first bedframe section and an opposite end pivotally connected with respect to one of said two bedframe links.
  • a folding bed assembly including anchor means located within said enclosure, a first bedframe, linkage means interconnecting the bedframe to said anchor means for movement of the bedframe between a retracted position in said enclosure and an extended horizontal position projecting through said opening outwardly of said enclosure, and a bedframe support means separate from said linkage means and being connected to said anchor means for movement between a retracted position within said enclosure and an extended position extending through said opening below said bedframe and with a portion of the bedr'rame resting on said support means.
  • said linkage means includes a pair of links having their opposite ends pivotally connected to said anchor means and said bedframc respectively
  • said support means includes a leg having one end pivotally connected to said anchor means and an opposite end adapted to engage the floor when the oedframe is in horizontal position, an auxiliary support link having one end pivotally connected to an intermediate portion of said leg and an opposite end adapted to engage below said bedframe when the bedframe is in horizontal position, and a locking link having one end pivotally connected to an intermediate portion of said auxiliary support link and an opposite end pivotally connected with respect to said anchor means.
  • said first bedframe linkage means includes a third link having one end pivotally connected to one of said pair of links and an opposite end connected to said first bedfrarne.
  • a folding bedframe combination including; a bcdframc, mounting linkage means connected to the bedframe and adapted to be connected to an anchor for mounting the bedframe for movement between a retracted position and an extended position in generally horizontal plane, and a support linkage means separate from said mounting linkage means and adapted to be connected to the anchor for movement between a retracted position and an extended position for supporting said bedframe in generally horizontal position.

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  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

A folding bedframe including front and rear frame sections movable between a retracted vertical position wherein the bed frames are in generally parallel relationship, and an extended horizontal position wherein the bedframe sections are in generally coplanar relationship with the front bedframe section projected forwardly from the rear bedframe section. A first linkage mounts the rear frame section to an anchor means for swinging movement between a retracted vertical position and an extended horizontal position. Support for the rear frame section while in the horizontal position is provided by a second linkage pivotally connected to the anchor means for movement independently of the first linkage between a retracted position, and an extended position resting on the floor with the rear frame section engaged thereon. The front frame section is supported on the floor by means of a link which pivots into engagement on the floor when the front frame section is fully extended.

Description

United States Patent [72] lnventor Walter Clark Rogers, Jr.
High Point, N.C. [21] Appl. No. 791,475 [22] Filed Jan. 15,1969 [4S] Patented Mar. 23, 1971 [73] Assignee Royal Development Company Inc.
High Point, N.C.
[54] FOLDING BED LINKAGE 16 Claims, 8 Drawing Figs.
[52] U.S.Cl. 5/1149, 5/6, 5/159 [51] Int. Cl ..A47c 13/36, A47c 17/40 [50] Field ofSearch 5/2, 3, 6, 13, 132, 133, 145, 149152 [56] References Cited UNITED STATES PATENTS 2,701,603 2/1955 Coopersmith 5/152 3,380,083 4/1968 Mikos 5/13 2,751,607 6/1956 Thomas 5/149 Primary Examiner-Casmir A. Nunberg Attorney-Beveridge & DeGrandi ABSTRACT: A folding bedframe incliiding front and rear frame sections movable between a retracted vertical position wherein the bed frames are in generally parallel relationship, and an extended horizontal position wherein the bedframe sections are in generally coplanar relationship with the front bedframe section projected forwardly from the rear bedframe section. A first linkage mounts the rear frame section to an anchor means for swinging movement between a retracted vertical position and an extended horizontal position. Support for the rear frame section while in the horizontal position is provided by a second linkage pivotally connected to the anchor means for movement independently of the first linkage between a retracted position, and an extended position resting on the floor with the rear frame section engaged thereon. The front frame section is supported on the floor by means of a link which pivots into engagement on the floor when the front frame section is fully extended.
PATENTEDMAR-23l97l- SHEET- 1 BF 5 WALTER C. ROGERS Jr.
ATTORNEYS PATENTED MR2 319m SHEET 2 0F 5 WALTER C ROGERS Jr.
. N at ATTORNEYS PATENTEB HAR23 12m sum 3 or 5 INVENTOR WALTER C ROGERS Jr.
BY 5M4 801734 ATTORNEYS PATENTED m2 3 IQYI SHEET t 0F 5 INVENTOR WALTER 0. ROGERS Jr.
BY 5%. so?! mid ATTORNEYS returns sun trimmer.
SUMMARY OF lNVlENTlON This invention generally pertains to folding beds and more specifically to a new and improved folding bedframe assembly and included linkage having particular utility in connection with beds which fold into an enclosure such as a cabinet, chest or wall although the present invention is not limited thereto.
One of the objects of the present invention is to provide a new and improved folding bedframe assembly including a new and improved linkage for supporting and moving the assembly between a retracted storage position and an extended use position. included herein is the provision of such a linkage that has a relatively simple and compact construction and yet provides ample support for the bedframe and is moreover easily maneuverable between retracted and extended positions.
A further object of the present invention is to provide a folding bedframe assembly and associated linkage that may be compactly housed for storage in a cabinet or chest. included herein is the provision of such a bedfrarne assembly that may be easily unfolded from the cabinet into a horizontal position for use and without tilting or upsetting the cabinet during unfolding.
ln one embodiment of the invention, the above objects are achieved by means of a pair of generally rectangular front and rear bedframe sections which are interconnected by a linkage for movement between a retracted parallel position and an extended use position wherein the front bedframe section projects forwardly from the rear bedfrarne section in generally coplanar relationship. The rear bedframe section is mounted by means of a linkage to a fixed support or anchor means for movement between a vertical, retracted position and an extended, horizontal position.
Supporting the rear bedframe section when in the horizontal position is a main support linkage which is pivotally connected to the stationary support or anchor means for movement between a retracted position and an extended position underlying and supporting the rear bedframe section. The main support linkage is separate from the linkage which mounts the rear bedfrarne section to the anchor means. in unfolding the assembly, the main support linkage is first unfolded into the extended position and then the rear bedframe section is unfolded into horizontal position resting on the main support linkage with the front frame section still in retracted parallel position but overlying the rear frame section. The front frame section is then unfolded relative to the rear section into horizontal position forwardly of and in coplanar relationship with the bed rear-bed rear-frame section. This automatically unfolds a front support leg pivoted to the front frame section until the front support leg contacts the floor. Pivoting of the front support leg is obtained by an actuating link interconnesting the front support leg and the linkage which interconnects the front and rear frame sections. To retract the assembly the above steps are reversed.
Other objects and advantages will become apparent from the more detailed description taken in conjunction with the attached drawings in which:
FIG, l is a side elevational view of a bedframe assembly embodying the present invention shown in fully folded or retracted position in an enclosure which is shown in cross section;
FIG. 2 is a view generally similar to H6. l but with a main support linkage included in the assembly, shown in a partially unfolded position projecting out of the enclosure;
FIG. 3 is a view generally similar to H6. 2 but with the main support linkage in the fully unfolded or extended position wherein it rests on the floor;
H0. 4 is a view generally similar to FIG. 3 but with bedframe sections included in the assembly shown in a partly extended position projecting out of the enclosure;
Fit}. 5 is a view generally similar to FIG. 4 but with the bedframe sections shown in a further extended position, resting on the main support linkage;
FlG. 6 is a vicwgenerally similar to Fit]. 5 but illustrating further unfolding of the bedframe sections relative to each other towards a fully extended coplanar position, and the enclosure and portions of the main support linkage being omitted;
Fit 7 is a view generally similar to Fill. it but with the bedframe sections in the fully unfolded or extended position; and
FIG. 8 is a fragmental, perspective view of the bedframe as sembly when in the fully extended or unfolded position and with one of the bedframe sections omitted.
DETAlLED DESCRlPTlON Referring to the drawings in detail, there is shown for purposes of illustration only, a bedframe assembly embodying the present invention including front and rear bedframe sections generally designated ill and 32 which are movable between a fully folded or retracted position shown in Fifi. l, and a fully extended or unfolded position shown in Fig. '7. Bedframc sections ill and 12 per se may have a conventional rectangular construction formed by tubular steel side members l4 interconnected by tubular steel end members to and ill illustrated in FIG. 8. A conventional mattress designated 20 is supported on the bedframes by means ofa conventional wire spring (not shown) secured to the bedframe sections. Typical mattress stops 22 may be fixed to the ends of the bedframc sections as illustrated in H65. 2 and d. 1
Although not limited thereto, the assembly is particularly suited for storage in the retracted position in an associated enclosure such as a chest, cabinet, closet or other similar structure generally designated 24 in the drawings. in the specific form shown, the enclosure 24 includes a flat top panel 26, vertical parallel side panels 23, and a rear panel 3b which define a space dimensioned to receive the bedframe assembly in the fully folded position as indicated in H6. 1. Movement of the assembly into and out of the enclosure is through an opening designated 32 in the front wall of the enclosure. Doors or other suitable closures (not shown) movable into opening 32 may be provided to conceal the bedframe assembly when in the fully retracted position in the enclosure.
ANCHOR MEMBERS in the preferred embodiment, the assembly is anchored at one end to the enclosure side panels 28 by two pairs of anchor members generally designated 34 and 356. Anchor members 34 and 36 may be formed by elongated steel bars, with one pair of anchor members being fixed to one side panel 2% such as with screws 38 and the other pair similarly fixed to the other side panel 23. In the specific embodiment, anchor bar 3d includes a lower portion ill and an upper portion 42 extending at an obtuse angle of approximately l l5 with respect to the lower portion. The other anchor bar 36 similarly includes lower and upper portions 44 and 46, however the angular interrelationship in this instance is approximately The relative position between the anchor bars when fixed to side panel 28 is clearly shown in the drawings. The lower extremities of anchor bars 34, as engage the floor and this auto matically positions them at the proper elevation along side panels 23. However, anchor bars 3 36 need not be positively attached to the side panels 2%} but instead may be freestanding. In this instance, anchor bars 34, as will be fixed against movement relative to each other by pivot pins ill, 5b which connect the anchor bars at their points of intersection.
livotaliy connected to the anchor bars are what will be termed a main support linkage generally designated 60 and a bedframe linkage" generally designated 62. Although the main support linkage till and bedframe linkage is at one side of the assembly will be described below, it will be understood that the other side of the assembly will have an identical main support linkage and bedframe linkage which will be connected to the adjacent pair ofanchor members 34, 36
Main support linkage 62 includes an elongated generally rectilinear main support link 64 having one end pivotally connected by pivot 66 to anchor bar as just below the bite section 52 of the latter for movement between a fully retracted or folded vertical position in the enclosure (see FIG. 1) and a fully extended or unfolded position projecting outwardly of the enclosure (see FIGS. 3 and 5). Main support link 64 thus provides a main support leg, the free end 63 of which is free to engage the floor when in the fully extended position.
In the extended horizontal position, rear bedframe section 12 is supported on main support linkage 60 with the weight being transmitted to the floor through main support link 64. This is accomplished by means of an auxiliary support link" generally designated 78 having one end pivotally connected by pivot 72 to an intermediate portion of main support link 64 and an opposite end fixed to a crossbar 74 which extends across the assembly to receive rear bedframe section 12 as shown in FIGS. 5 and S. It will be understood that crossbar 74 extends between and is fixed to the upper ends of auxiliary support links '70 at opposite ends of the assembly. If desired resilient bumper members '76 may be fixed to the opposite side members 14 of rear bedframe section A2 to be engageable on the crossbar 74' as shown in FIG. 5. In addition, a depending arm 78 may be fixed to the underside of side members 14 to hook over crossbar 74 as shown in FIG. 5.
in order to lock auxiliary support link 70 in the extended operative position wherein it supports the bedframe section in horizontal position as shown in FIG. 5, a locking link 8% is pivotally connected between the anchor bars and auxiliary link 7t One end oflocking link 59 is connected by pivot 50 to anchor bars 34, 36 while the opposite end is connected by pivot 82 to an intermediate portion of auxiliary support link 70. The location of pivot 82 and the shape of auxiliary link 79 is designed so that locking link 80 may be moved into retracted vertical position in the enclosure along with main support link 64 without jamming or interference as a result of auxiliary support link which is also movable into the enclosure. To this end in the shown embodiment, auxiliary support link 70 is formed in two parts 71 and '73 which extend at an angle of approximately 135 with respect to each other; and
pivot 82 is located intermediate the ends of upper part 73. The
angular shape of auxiliary support link 70 also allows its upper part 73 to extend upwardly sufficiently to permit crossbar 74 to engage the underside of rear bedframe section 12.
To enhance stability of main support linkage 60 as well as to insure that the main linkage at the opposite sides of the assembly will act together in unison during folding and unfolding, a crossbar as is fixed between main support legs 64 of each linkage in the position illustrated in the drawings. Crossbar 84 also provides a stop for movement of link 70 relative to main support 64 when the latter has come to rest on the floor at the same time pivots 50, '72 and 82 come in line with each other, which condition allows 70 to continue movement about pivot 72 until stopped by crossbar 34.
To unfold main support linkage 60 from the retracted position shown in Flg. l to the extended position shown in FIG. 5, cross tube 86 is grasped and pulled outwardly and downwardly away from the enclosure which will cause main support leg 64 to pivot in a clockwise direction (as viewed in the drawings) about pivot 66. Locking link 80 will also pivot clockwise about its pivot 50 because of its connection to main support link 64 through auxiliary support link 70. Locking link 80 however, during this unfolding, will move along a flatter arc than main support link 64 and thus cause auxiliary support link 70 to un' fold about its pivot 72 counterclockwise relative to main support link 64 as illustrated in FIG. 2. When main support leg 64 engages the floor, locking link 80 together with crossbar 84 will have positioned (see FIG. 3) auxiliary support link 7% with crossbar 74 at the proper elevation for receiving rear bedframe section 12. It will be noted that pivot 82 lies on two different arcs of movement, and when pivots 50, 72 and arc in line, the linkage sets up a condition of rigid triangulation involving pivotal triangle 50, 72 and 66 thus preventing relative movement between main support link 64 and anchor bar 36 thus preventing tilting of cabinet. Then, when the bedframe is extended to rest upon 74 the weight of the bedframe is transferred through auxiliary link 70 to crossbar 84 to main support link 64 and finally to the floor.
BEDFRAME LINKAGE After main support linkage 60 is extended into the horizontal position shown in FIG. 3, bedframe sections l0, 12 are moved out of the enclosure and on to main support linkage (it) by means of bedframe linkage 62.
Bedframe linkage 62 is separate from main support linkage 60 and includes a pair of rectilinear links and 92 pivotally connected by pivots 48 and M to the anchor bars at locations indicated in the drawings (see FIG. 5). Link 92 is pivotally connected to rear bedframe section 12 by pivot 96 which is received in side member 14 of the rear bedframe section. Link 90 is pivotally connected to the rear bedframe 12 by means of a short link 98 having a generally L shape one end of which is connected by pivot 96 to the rear bedframe section while the other end projects from the rear bedframe section and is pivotally connected by pivot M0 to link 94 However short link 9% is fixed against relative movement with respect to rear bedframe section 12 by means of a pin 102 received in side member 14.
it will thus be seen that links 90, 92 form swing arms for rear bedframe section 12 for projecting the latter out of the enclosure relative to the anchor bars. In addition, bedframe section K2 is free to pivot about pivots 96 and res relative to links 90 and 92 to enable the bedframe section 12 to move between the vertical retracted position shown in FIG. I and the horizontal extended position shown in FIG. 5.
in their retracted positions, links 90, 92 extend downwardly at an angle from their pivotal connections 48, 94 as shown in FIGS. 1 and 2. In their extended positions, links 90, 92 form with anchor bar 42 and side member 14 of the bedframe section, a generally right triangle as indicated in FIGS. 5 and 8. It will be seen that when in the horizontal position shown in FIG. 5, bedframe sections 10, 12 are supported relative the anchor bars by means of links 90, 92 in addition to being supported on main linkage 60. Moreover in this position of the assembly, two trusses are formed in effect by main support linkage 60 and bedframe linkage 62 with side member 14 of rear frame section 12 forming a tension member for both of the trusses.
To move the bedframe sections from the retracted vertical position shown in FIG. 1 to the extended position shown in FIG. 5, crossbar I8 is merely pulled forwardly away from the enclosure which causes links 90, 92 to swing counterclockwise about their pivots 48, 94 while at the same time causing bedframe section 12 to pivot clockwise relative to the links 99, 92 as illustrated in FIG. 4. Continued pulling ofcrossbar ill in the forward direction will eventually cause bumper 76 to engage on crossbar 74 with arm 78 hooked over the latter.
After the assembly is moved into the position shown in FIG. 5, the next unfolding step is to move front mattress section l0 relative to rear section 12 into the fully extended position shown in FIG. 7.
This is accomplished through a pair of "crisscross" links 11.0, 112 which extend rectilinearly across each other and are pivotally connected at their opposite ends with respect to both bedframe sections v Link llli) is pivotally connected to side member l of bedframe sections it) and 12 by means ofpivots H4 and 116. The position of pivot 116 in the shown embodiment is determined by means of an arm H8 rigidly fixed to front section iii to receive pivot 216. The other link H2 is pivotally connected to side member 14 of frame sections l0. l2 by pivots 126, 122. When the bedframe sections are in the vertical retracted position shown in FIG. l, links ill), H2 serve to maintain the bedframes in parallel relationship. The
same parallel relationship of the bedframe sections is also maintained by links llil, Hi2 when the bedframe sections are moved to the position shown in H6. 5.
in order to extend front bedfrarne section ill from its position shown in 5, it is swung upwardly relative to links lltl, lllfl and moved forwardly relative to rear bedframe section 112 with links llll, lllll". allowing such movement as indicated in HQ. 6, until the front bedframe section is positioned horizontally and coplanar with rear frame section l2 as indicated in HG. '7. Links llllll, 1112 are made of sufficient length and their pivots ltd, 1122?. placed in proper spaced positions along side member lid of front bedframe section ill to obtain the foregoing movement of front bedframe section ll).
To support front bed section lll above the floor in coplanar position with rear bedframe section 12, a foidable support leg 13b is pivotally connected by pivot H32 to an intermediate portion of side member 14 of front bedframe section it). Front support leg lllil is actuated by a link lids, from a retracted position generally adjacent the plane of bedfrarne section lil into an extended position in engagement with the floor upon movement of the front bedframc section ill into the extended position. One end of link BM is pivotally connected by pivot i356 to an intermediate portion of front support leg 13h while the other end is pivotally connected by pivot 13% to an intermediate portion of link lid.
i l hen link lid moves in the clockwise direction upon unfolding of front bedfrarne section lb, link 13 3 will be drawn downwardly to pivot and unfold front support leg l3 relative to the front bedframe section. Link 1334 also serves to lock front support leg H30 in the extended position engaged on the floor. in the extended horizontal position front beclframe section lll) is thus supported by means of leg 130 and also by means of its connection through crisscross links llltl and M2 to rear mattress section HE. A crossbar Mill is preferably provided between front support legs l3il of each linkage for stability and also to insure they move in unison during folding and unfolding.
Crisscross links lid and 112 coupled with leg 130 and control link 13 3 also serve to lock sections ill and i2 in their closed'(parallel) position, which is required because of the varying resistance to compression afforded by mattresses. When pivots R36, 132 and 138 are operated into alignment with each other, a condition of rigid triangulation is set up involving pivotal triangle 132, 138 and lid thus preventing relative movement between ill) and It) and consequently preventing operation of the crisscross linkage. Crossmember Mill in this instance serves as a stop to prevent further movement of leg 13!) relative to section 10.
OPERATION To summarize unfolding of the complete assembly from the retracted position in the enclosure shown in FIG. 1, crossbar Wt of main support linkage so is pulled forwardly and downwardly to cause clockwise movements of main support leg ti l and auxiliary link 7'9 about their pivots 6b and 5th until main support leg 45 i engages the floor as shown in FIG. 3. During this movement, bedframe sections lid and 12 remain in their retracted parallel vertical positions in the enclosure. End member id of rear bedfrarne section 112 is then pulled forwardly to swing the bedfrarne sections out of the enclosure by means of links ill and 92 which pivot in a counterclockwise direction from the retracted position'shown in FIG. 3. Upon continued movement, the bedframe sections pivot downwardly relative to links 9% and 92 until rear bedframe section lift is engaged upon crossbar 7d of the main support linkage. At this point, front bedframe section lltl is still parallel to rear bedframe section l2 but in an overlying position as indicated in 5. The next and final step is to swing front frame section til upwardly and forwardly until the front sup port leg we engages the floor as shown in FIG. 7.
To fold the assembly into the enclosure, the above steps are essentially reversed. After the assembly is folded into the enclosure, crossbar as of main support linkage (all serves to hold the bedframe sections in the vertical retracted position.
Modifications and adaptations of the present invention readily apparent from the foregoing description and associated drawings, although not specifically mentioned herein, will nevertheless be included within the scope of the present invention as indicated in the appended claims.
lclaim:
l. Linkage for a section of a folding bedframe having an associated anchor means; the linkage comprising in combination, support linkage means adapted to be connected to said anchor means for movement between a retracted position and an extended horizontal position, and a bedframe linkage means adapted to be connected at one end to said bcdframe and at the other end to said anchor means to mount the bedt'rarne for movement between a retracted position and an extended horizontal position overlying and engaged on said support linkage means, said support linkage means and said bedframe linkage means being separate from each other and arranged such that said support linkage means is first movable from the retracted to the extended position and then the bedframe linkage means is movable from the retracted to the extended position overlying the support linkage means.
2. The linkage defined in claim it wherein said bedfrarne linkage means includes two links adapted to be connected at their opposite ends to said bedframe and said anchor means.
3. The linkage defined in claim 2; wherein said bedframe linkage means further includes a third link having one end connected to said bedframe and an opposite end connected to one of said two links.
The linkage defined in claim 2 wherein said support linkage means includes a main support leg having one end adapted to be connected to said anchor means and another end adapted to engage the floor when the support linkage means is in the extended position, an auxiliary support link having one end connected with respect to an intermediate portion of said main support leg and an opposite end adapted to engage below the bedframe when the bedframe is in the horizontal position, and a locking link having one connected to an intermediate portion of said auxiliary support link and an opposite end adapted to be connected to the anchor means.
5. The linkage defined in claim 1; wherein said support linkage means includes a main support leg having one end adapted to be connected to said anchor means and another end adapted to engage the floor when the support linkage is in the extended position, an auxiliary support link having one end connected with respect to an intermediate portion of said main support leg and another end adapted to engage below the bedframe when the bedframe and main support linkage means are in the extended positions, and a locking link having one end connected to an intermediate portion of said auxiliary support link and another end adapted to be connected to said anchor means.
ti. In combination with the structure defined in claim l, a second bedframe section, and connecting linkage means interconnecting said second bedfrarnc section and said first bedframe section for movement between a retracted position wherein said first and second bedframe sections are in generally parallel relationship and a fully extended position wherein said bedframc sections are in generally coplanar relationship with said second bedfrarne section projected forwardly from said first bedframe section.
7. The combination defined in claim 6 wherein said interconnecting linkage means includes a pair of links having their opposite ends pivotally connected to said bcdframe sections such that when the bedframc sections are in parallel relationship, said pair of links cross each other and maintain said bedframe sections against movement towards each other.
The combination defined in claim 7 further including a second support leg having one end pivotally connected to said second bedframe section for movement between a retracted position adjacent the plane of said second bedframe section and. an extended position projecting downwardly from said second bedfrerne section int; engagement with the floor, and an actuating link having one end pivotally connected to an intermediate portion of said second support leg and an opposite end pivotally connected to one of said pair of links so as to be operated by the latter upon movement of the second bedframe section into fully extended position to thereby actuate said second support leg into extended position in engagement with the floor.
9. in combination with the structure defined in claim 4, a second bedframe section and interconnecting linkage means connected between said first and second bedframe sections to mount the second bedfrarne section for movement between a retracted position generaily in parallel relationship with said first bedframe section and an extended position forwardly of said first bedframe section and in generally coplanar relationship therewith.
The combination defined in claim 9 wherein said bedframe linkage means further includes a third link having one end pivotally connected to said first bedframe section and an opposite end pivotally connected with respect to one of said two bedframe links.
ii. in combination with an enclosure having an opening therein, a folding bed assembly including anchor means located within said enclosure, a first bedframe, linkage means interconnecting the bedframe to said anchor means for movement of the bedframe between a retracted position in said enclosure and an extended horizontal position projecting through said opening outwardly of said enclosure, and a bedframe support means separate from said linkage means and being connected to said anchor means for movement between a retracted position within said enclosure and an extended position extending through said opening below said bedframe and with a portion of the bedr'rame resting on said support means.
32.. The combination defined in claim ll further including a second bedframe and interconnecting linkage means connecting said second bedframe to said first bedframe for movement between a retracted positiori parallel with said first bedframc and an extended position forwardly of said first bedframc and in generally coplanar relationship therewith.
13. The combination defined in claim 11 wherein said linkage means includes a pair of links having their opposite ends pivotally connected to said anchor means and said bedframc respectively, and wherein said support means includes a leg having one end pivotally connected to said anchor means and an opposite end adapted to engage the floor when the oedframe is in horizontal position, an auxiliary support link having one end pivotally connected to an intermediate portion of said leg and an opposite end adapted to engage below said bedframe when the bedframe is in horizontal position, and a locking link having one end pivotally connected to an intermediate portion of said auxiliary support link and an opposite end pivotally connected with respect to said anchor means.
1d. The combination defined in claim 23 wherein said first bedframe linkage means includes a third link having one end pivotally connected to one of said pair of links and an opposite end connected to said first bedfrarne.
15. A folding bedframe combination including; a bcdframc, mounting linkage means connected to the bedframe and adapted to be connected to an anchor for mounting the bedframe for movement between a retracted position and an extended position in generally horizontal plane, and a support linkage means separate from said mounting linkage means and adapted to be connected to the anchor for movement between a retracted position and an extended position for supporting said bedframe in generally horizontal position.
16. The combination defined in claim l5 further including an anchor means, said mounting linkage means being pivotally connected to said anchor means to move said bedframe between a vertical retracted position and said horizontal extended position, and said support linkage means being pivotally connected to said anchor means to be movable between a vertical retracted position and said horizontal extended position.

Claims (16)

1. Linkage for a section of a folding bedframe having an associated anchor means; the linkage comprising in combination, support linkage means adapted to be connected to said anchor means for movement between a retracted position and an extended horizontal position, and a bedframe linkage means adapted to be connected at one end to said bedframe and at the other end to said anchor means to mount the bedframe for movement between a retracted position and an extended horizontal position overlying and engaged on said support linkage means, said support linkage means and said bedframe linkage means being separate from each other and arranged such that said support linkage means is first movable from the retracted to the extended position and then the bedframe linkage means is movable from the retracted to the extended position overlying the support linkage means.
2. The linkage defined in claim 1 wherein said bedframe linkage means includes two links adapted to be connected at their opposite ends to said bedframe and said anchor means.
3. The linkage defined in claim 2 wherein said bedframe linkage means further includes a third link having one end connected to said bedframe and an opposite end connected to one of said two links.
4. The linkage defined in claim 2 wherein said support linkage means includes a main support leg having one end adapted to be connected to said anchor means and another end adapted to engage the floor when the support linkage means is in the extended position, an auxiliary support link having one end connected with respect to an intermediate portion of said main support leg and an opposite end adapted to engage below the bedframe when the bedframe is in the horizontal position, and a locking link having one connected to an intermediate portion of said auxiliary support link and an opposite end adapted to be connected to the anchor means.
5. The linkage defined in claim 1 wherein said support linkage means includes a main support leg having one end adapted to be connected to said anchor means and another end adapted to engage the floor when the support linkage is in the extended position, an auxiliary support link having one end connected with respect to an intermediate portion of said main support leg and another end adapted to engage below the bedframe when the bedframe and main support linkage means are in the extended positions, and a locking link having one end connected to an intermediate portion of said auxiliary support link and another end adapted to be connected to said anchor means.
6. In combination with the structure defined in claim 1, a second bedframe section, and connecting linkage means interconnecting said second bedframe section and said first bedframe section for movement between a retracted position wherein said first and second bedframe sections are in generally parallel relationship and a fully extended position wherein said bedframe sections are in generally coplanar relationship with said second bedframe section projected forwardly from said first bedframe section.
7. The combination defined in claim 6 wherein said interconnecting linkage means includes a pair of links having their opposite ends pivotally connected to said bedframe sections such that when the bedframe sections are in parallel relationship, said pair of links cross each other and maintain said bedframe sections against movement towards each other.
8. The combination defined in claim 7 further including a second support leg having one end pivotally connected to said second bedframe section for movement between a retracted position adjacent the plane of said second bedframe section and an extended position projecting downwardly from said second bedframe section into engagement with the floor, and an actuating link having one end pivotally connected to an intermediate portion of said second support leg and an opposite end pivotally connected to one of said pair of links so as to be operated by the latter upon movement of the second bedframe section into fully extended position to thereby actuate said second support leg into extended position in engagement with the floor.
9. In combination with the structure defined in claim 4, a second bedframe section and interconnecting linkage means connected between said first and second bedframe sections to mount the second bedframe section for movement between a retracted position generally in parallel relationship with said first bedframe section and an extended position forwardly of said first bedframe section and in generally coplanar relationship therewith.
10. The combination defined in claim 9 wherein said bedframe linkage means further includes a third link having one end pivotally connected to said first bedframe section and an opposite end pivotally connected with respect to one of said two bedframe links.
11. In combination with an enclosure having an opening therein, a folding bed assembly including anchor means located within said enclosure, a first bedframe, linkage means interconnecting the bedframe to said anchor means for movement of the bedframe between a retracted position in said enclosure and an extended horizontal position projecting through said opening outwardly of said enclosure, and a bedframe support means separate from said linkage means and being connected to said anchor means for movement between a retracted position within said enclosure and an extended position extending through said opening below said bedframe and with a portion of the bedframe resting on said support means.
12. The combination defined in claim 11 furtheR including a second bedframe and interconnecting linkage means connecting said second bedframe to said first bedframe for movement between a retracted position parallel with said first bedframe and an extended position forwardly of said first bedframe and in generally coplanar relationship therewith.
13. The combination defined in claim 11 wherein said linkage means includes a pair of links having their opposite ends pivotally connected to said anchor means and said bedframe respectively, and wherein said support means includes a leg having one end pivotally connected to said anchor means and an opposite end adapted to engage the floor when the bedframe is in horizontal position, an auxiliary support link having one end pivotally connected to an intermediate portion of said leg and an opposite end adapted to engage below said bedframe when the bedframe is in horizontal position, and a locking link having one end pivotally connected to an intermediate portion of said auxiliary support link and an opposite end pivotally connected with respect to said anchor means.
14. The combination defined in claim 13 wherein said first bedframe linkage means includes a third link having one end pivotally connected to one of said pair of links and an opposite end connected to said first bedframe.
15. A folding bedframe combination including; a bedframe, mounting linkage means connected to the bedframe and adapted to be connected to an anchor for mounting the bedframe for movement between a retracted position and an extended position in generally horizontal plane, and a support linkage means separate from said mounting linkage means and adapted to be connected to the anchor for movement between a retracted position and an extended position for supporting said bedframe in generally horizontal position.
16. The combination defined in claim 15 further including an anchor means, said mounting linkage means being pivotally connected to said anchor means to move said bedframe between a vertical retracted position and said horizontal extended position, and said support linkage means being pivotally connected to said anchor means to be movable between a vertical retracted position and said horizontal extended position.
US791475*A 1969-01-15 1969-01-15 Folding bed linkage Expired - Lifetime US3571827A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999865A (en) * 1989-12-08 1991-03-19 Sauder Woodworking Company Foldable bed assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701603A (en) * 1952-07-21 1955-02-08 Coopersmith Rudolph Combination bed and contour chair
US2751607A (en) * 1952-11-21 1956-06-26 Joseph R Thomas Convertible furniture
US3380083A (en) * 1966-06-06 1968-04-30 Seng Co Sofa bed with leg actuated section locking means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701603A (en) * 1952-07-21 1955-02-08 Coopersmith Rudolph Combination bed and contour chair
US2751607A (en) * 1952-11-21 1956-06-26 Joseph R Thomas Convertible furniture
US3380083A (en) * 1966-06-06 1968-04-30 Seng Co Sofa bed with leg actuated section locking means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999865A (en) * 1989-12-08 1991-03-19 Sauder Woodworking Company Foldable bed assembly

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