US3903553A - Convertible sofa-bed furniture - Google Patents

Convertible sofa-bed furniture Download PDF

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Publication number
US3903553A
US3903553A US473699A US47369974A US3903553A US 3903553 A US3903553 A US 3903553A US 473699 A US473699 A US 473699A US 47369974 A US47369974 A US 47369974A US 3903553 A US3903553 A US 3903553A
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leg
main
link
pivotally connected
section
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Expired - Lifetime
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US473699A
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English (en)
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Albert Metayer
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/22—Seating furniture having non-movable back-rest changeable to beds with means for uncovering a previously hidden mattress or similar bed part
    • A47C17/225—Seating furniture having non-movable back-rest changeable to beds with means for uncovering a previously hidden mattress or similar bed part with hidden separate full size mattress frame unfolded out of the base frame
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/22—Seating furniture having non-movable back-rest changeable to beds with means for uncovering a previously hidden mattress or similar bed part

Definitions

  • This sotabed convertible furniture comprises a fixed wooden main frame supported by four legs at its cor ners, a back comprising a relatively thick padded lower portion for improving the user's comfort at the small of the back. and a four-section, easy-open mechanism adapted to nest completely within the contour of said frame.
  • the mechanism is so arranged that no interference with said thick padded lower portion of the back rest is produced when opening and re-closing the mechanism
  • the sections of this mechanism are a head-rest section, an intermediate section, a main section and a foot-rest section and their relative arrangement is such that the general depth of the furniture is reduced appreciably as well as the over-all dimensions of the furniture itself.
  • a popular proposition in this field comprises a first section or element, ie the headrest section, of the mattress-supporting frame which extends substantially vertically behind the padded elements of the seat back.
  • the head-rest section must compulsorily describe at least during the initial part of the sofa opening movement to the bed position an unfolding movement which is generally awkward due to the presence ofa particularly heavily padded portion for supporting the users small of the back at the base of the furniture back.
  • the essential object of the present invention to avoid the inconveniences set forth hereinabove by providing a mechanism for a sofa bed convertible furniture wherein the mattress supporting frame structure elements and more particularly the head-rest section are caused during the opening thereof to perform a move ment such that it will not interfere with the lower portion of the back rest of the furniture which can thus be padded to a substantial extent for supporting and providing comfort to the small of the back of the users, while reducing the total depth and therefore the overall dimensions of the furniture in the bed position while preserving the original and necessary bed length.
  • the unfolding or opening mechanism according to this invention has in the folded or sofa position a substantially parallelipipedic configuration whereby it can easily be incorporated in any type of furniture such as caravan upholstered benches, storage units, boats, tables etc.
  • the mechanism according to this invention comprises an assembly of four successive and hingedly in terconnected mattress-supporting sections, i.e., from back to front, a head-rest section, a main section, an intermediate section and a foot-rest section, respectively, said head-rest section being adapted, in the folded condition of the furniture, to fit horizontally between said main section and said footrest section, and being operatively connected to the foot-rest section of the furniture by means of linkage members controlling automatically the backward pivotal movement of the head-rest section until this section extends horizontally and in substantially coplanar relationship to said main section when the foot-rest section is pulled forwards to its horizontal unfolded or bed position.
  • the linkage controlling the movement of the head-rest section of the mattress supporting frame structure comprises a link pivoted at one end to the intermediate section of this frame structure and provided at the opposite end with a transverse stud slidably engaging an elongated aperture or slot formed laterally in said main section, said link being pivoted above its transverse stud to one end of a linkage having its opposite end adapted to coact with a tilting lever fulcrumed intermediate its ends to said main section and at its end to said head-rest section, whereby the unfolding movement of said foot-rest section, which causes said intermediate section to pivot in the forward direction, is attended by the movement of said transverse stud of said link in an elongated aperture or slot formed in said main section while causing said linkage to move forward and thus control through the rotation of said tilting lever the pivotal movement of said head-rest section to its unfolded or bed position.
  • the foot-rest section is connected to said intermediate section via a pivoted link carrying at one end a transverse-stud adapted during the movement of said rest section to travel in a S-shaped channel or aperture formed laterally in said intermediate section.
  • FIG. I is a diagrammatic side elevational view of the convertible sofa-bed of this invention, as seen after the first opening phase during which the various sections of the mattress-supporting frame structure are released in their folded position from their storage space within the solid hardwood frame of the furniture;
  • FIGS. 2 to 4 inclusive illustrate in side elevational views the successive steps of the furniture opening operation
  • FIGS. 5 and 6 illustrate the head-rest section and the foot-rest section respectively in their unfolded or bed position.
  • the folding frame structure is symmetrical in relation to a vertical median plane of the furniture and that the joints between the movable sections or parts are disposed symmetrically on either side of the structure. Under these conditions, it is deemed sufficient to describe only one side of this structure.
  • the fixed portion of the mechanism is housed within the furniture hardwood frame structure of conventional cabinet-making appearance, as shown diagrammatically in FIGS. 1 and 5, this structure comprising notably a back I having near its bottom or base a stuffed or padded convex portion 2 for improving the comfort of the user's small of the back.
  • This fixed portion comprises essentially an horizontal rectangular wooden frame 3 supported at its four corners by fixed legs 4.
  • a lateral support (not shown in the drawings) to which the lateral linkage of the mechanism is pivoted at two points 5 and 6 (i.e. one at the rear and the other at the front).
  • This linkage comprises an arm 7 pivoted at one end by means of a pivot pin 5 to said lateral support and having its opposite end pivoted by means of another pivot pin 8 to a link 9 and by means of a complementary pivot pin 10 to one end of another link II, as shown.
  • This last-mentioned link II has its opposite end pivoted at 12 intermediate the ends of a pivoted arm 13 having one end pivoted at 6 to said lateral support and the other end pivoted at 14 to a tilting lever 15 having in turn one end 16 pivoted to link 9 pivoted in turn at 17 to the rear end of another section constituting the main section 19 of the mattress supporting structure.
  • a spring 22 has one end anchored to said link 11 and its other end attached to the lateral support (not shown) carried by the wooden frame 3.
  • a bent link 23 pivoted at 24 intermediate its ends to the main section 19 is also pivoted at one end 14 to the pivoting arm 13 and to the tilting lever 15, and at its other end (25) to a link 26 pivoted in turn to the upper portion of a foot-rest section 27 having its upper end 28 pivoted to the front portion of the main section 19 of said mattress-supporting frame structure.
  • the head-rest section 18 of this mattress-supporting frame structure (the mattress being omitted for the sake of clarity) extends horizontally between the main section 19 and foot-rest section 21, and it will readily appear from this structure that the fact of folding the head-rest section 18 within the frame structure of the furniture affords a considerable reduction in the depth of this mechanism which, in its folded condition, constitutes a parallelipipedic assembly perfectly adapted to be fitted in the modern configurations of convertible sofa-beds.
  • the head-rest section 18 has its front end pivoted at 29 to a link 30 pivoted in turn at one end to the rear portion of the main section 19 and its opposite bent end has formed thereon an abutment element 31 adapted, as shown in FIG.
  • the aforesaid link 37 carries behind its pivot pin 36 a transverse stud 38 slidably engaged in an elongated longitudinal slot 39 formed laterally in the main section 19, in the front position thereof.
  • To the front end of said main section 19 is also pivoted at 28 the rear end of the intermediate section 20 of the frame structure, this intermediate section 20 having pivoted thereto at 40 the foot-rest section 21 of the folding frame structure.
  • To the front portion of said intermediate section 20 is pivoted at 41 the front end of link 37 having its central portion pivoted at 42 to a link 43 pivoted at 44 to the median portion of a leg 45 pivoted in turn at its upper end 46 to said foot-rest section 21.
  • Near the rear end of foot-rest section 21 one end of a bent link 48 is pivoted at 47, the opposite end of this link 48 carrying a transverse stud 49 adapted to slide in a S-shaped slot 50 formed laterally in said intermediate section 20.
  • the head-rest section 1 overlies the convex portion 2 adjacent the base of back 1, whereby, while preserving the same bed length, the over-all dimensions of the furniture in the bed position can be reduced appreciably.
  • said head-rest section 18, by remaining folded within the other three sections of the mattresssupporting frame structure, permits of adding a relative thick padded or upholstered bottom portion 2 of said back 1, a feature not obtainable with existing mecha nisms in which the head-rest or equivalent section is unfolded immediately as the opening movement begins, so as to bear against the padded lower portion of the back.
  • a bed base for a piece of furniture adapted to be converted from a seat into a bed comprising a fixed frame, a main element, lever means pivotally connecting said main element to said frame and movable between a folded position in which said main element is inserted in said frame and an unfolded position in which said main element is moved from said frame to a horizontal position, a leg pivotally connected to said main element and capable of supporting said main element in its horizontal position, an intermediate element pivotally connected at its back end to said main element, a leg element pivotally connected at its back end to said intermediate element and movable between a folded position in which it is parallel to said main element and an unfolded position in which said leg element is in prolongation of said main and intermediate elements, a second leg pivotally connected to said leg element capable of supporting said leg element in its prolonged position, a head element pivotally connected to the back end of said main element and when in its unfolded position being housed between said folded leg element and said main element and linkage means connecting said head element, main element, intermediate element and leg
  • a bed frame as claimed in claim 3 including a second link pivotally connected to said head element and the back end of said main element and a stop provided on said second link adjacent said head element and capable of supporting said head element in its unfolded position.
  • a bed frame as claimed in claim 4 including a connecting link pivotally connected to said leg element ad jacent the pivoted connection of said leg element to said intermediate element, said intermediate element has an S-shaped lateral aperture and a transverse stud is provided on said connecting link and slideably positioned in said S-shaped lateral aperture,
  • a bed frame as claimed in claim 5 including a pivoted link pivotally connected to said lever means and said first leg and capable of automatically moving said first leg to its main element supporting position on the unfolding of said bed frame.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Special Chairs (AREA)
US473699A 1973-10-04 1974-05-28 Convertible sofa-bed furniture Expired - Lifetime US3903553A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7335554A FR2247055A5 (fr) 1973-10-04 1973-10-04

Publications (1)

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US3903553A true US3903553A (en) 1975-09-09

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US473699A Expired - Lifetime US3903553A (en) 1973-10-04 1974-05-28 Convertible sofa-bed furniture

Country Status (11)

Country Link
US (1) US3903553A (fr)
AT (1) AT344931B (fr)
BE (1) BE818500A (fr)
CA (1) CA1007402A (fr)
CH (1) CH585035A5 (fr)
DE (1) DE2445218A1 (fr)
DK (1) DK468674A (fr)
FR (1) FR2247055A5 (fr)
GB (1) GB1430538A (fr)
IT (1) IT1018989B (fr)
NL (1) NL7412194A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032999A (en) * 1975-06-10 1977-07-05 United States Steel Corporation Sofa bed
US4035852A (en) * 1976-10-08 1977-07-19 Mohasco Corporation Pull out sofa bed
US4672696A (en) * 1985-03-27 1987-06-16 Ferdinand Lusch Gmbh & Co. Kg. Convertible sitting/reclining furniture article
US4780918A (en) * 1987-05-07 1988-11-01 Super Sagless Corporation Sofa bed with friction stop
US5138727A (en) * 1991-03-22 1992-08-18 Hickory Springs Manufacturing Company Folding sofa bed frame structure with anti-topple linkage and movable mattress support bar

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585658A (en) * 1969-04-21 1971-06-22 Melvin P Spitz Folding sofa-bed with improved head section control linkage
US3710402A (en) * 1971-06-10 1973-01-16 Foster Brothers Mfg Co Sofa bed folding fixture
US3740775A (en) * 1970-12-15 1973-06-26 Metayer & Cie Ets Piece of furniture adapted to be converted from a seat into a bed
US3813710A (en) * 1972-10-12 1974-06-04 Hoover Ball & Bearing Co Foldable bed bottom frame assembly for use in sofa beds and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585658A (en) * 1969-04-21 1971-06-22 Melvin P Spitz Folding sofa-bed with improved head section control linkage
US3740775A (en) * 1970-12-15 1973-06-26 Metayer & Cie Ets Piece of furniture adapted to be converted from a seat into a bed
US3710402A (en) * 1971-06-10 1973-01-16 Foster Brothers Mfg Co Sofa bed folding fixture
US3813710A (en) * 1972-10-12 1974-06-04 Hoover Ball & Bearing Co Foldable bed bottom frame assembly for use in sofa beds and the like

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032999A (en) * 1975-06-10 1977-07-05 United States Steel Corporation Sofa bed
US4035852A (en) * 1976-10-08 1977-07-19 Mohasco Corporation Pull out sofa bed
US4672696A (en) * 1985-03-27 1987-06-16 Ferdinand Lusch Gmbh & Co. Kg. Convertible sitting/reclining furniture article
US4780918A (en) * 1987-05-07 1988-11-01 Super Sagless Corporation Sofa bed with friction stop
AU604763B2 (en) * 1987-05-07 1991-01-03 Super Sagless Corporation Sofa bed with friction stop
US5138727A (en) * 1991-03-22 1992-08-18 Hickory Springs Manufacturing Company Folding sofa bed frame structure with anti-topple linkage and movable mattress support bar

Also Published As

Publication number Publication date
FR2247055A5 (fr) 1975-05-02
BE818500A (fr) 1974-12-02
AT344931B (de) 1978-08-25
ATA756674A (de) 1977-12-15
IT1018989B (it) 1977-10-20
NL7412194A (nl) 1975-04-08
CA1007402A (en) 1977-03-29
GB1430538A (en) 1976-03-31
CH585035A5 (fr) 1977-02-28
DE2445218A1 (de) 1975-04-10
DK468674A (fr) 1975-05-20

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