Classifications

• • 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
  • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
  • A47C17/20—Seating furniture changeable to beds by tilting or pivoting the back-rest thereby uncovering one or more auxiliary parts previously hidden
• • 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
  • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
  • A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat
  • A47C17/175—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot
  • A47C17/1756—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot by pivoted linkages

Definitions

• a sofa bed comprises an almost parallelepiped frame structure, which forms an internal containment area for bedding storage, and a number of movable frames, bound together. These frames move according to roto- translating motions from the close to open position. In the close position, the frames fold up to keep the mattress folded in a number of pieces and stored in the area created by the fixed structure; in the open position, the movable frames are consecutively aligned, outside of said volume and define a rest surface. These movements are made possible thanks to one or more mechanisms interposed between the fixed structure and the movable frames.
• the invention solves the technical problem identified above, because it is a sofa bed comprising an almost parallelepiped frame structure; a number of movable frames, bound together, that move according to roto-translating motions from the close to open position, wherein in the close position said frames are sequentially folded up, while in the open position, are consecutively aligned; and a mechanism that moves said frames, characterized in that the mechanism comprises at least one lever, hinged to the joint between the frame (2), said headrest, and the adiacent frame (3), preventing the lowering of the above mentioned joint.
• the invention is capable of moving the seat cushion by means of only two additional elements.
• Fig. 1 shows the sofa-bed structure in the "bed" position
• Fig. 2 shows an axonometric view of the same sofa bed
• Figs 3, 4 and 5 show three consecutive steps of the sofa bed open operation
• Fig. 6 shows a detail of the frame in the "bed" position.
• a sofa bed comprising a driving mechanism, positioned between each/a frame and the following one.
• Said mechanism has synchronization tools to move the movable frames from the close to open position, and viceversa, in one movement only.
• the sofa bed (Fig. 2) is identified with the number/reference
• the frame structure has an almost parallelepiped shaped, which forms an internal containment area and is composed of several frames. Among such frames, at least one acts as a support for the back cushions.
• the fixed structure (7) defines an internal containment area (14), inside which the movable frames, bound one with the other, fold up to convert the sofa bed in the sitting position. Then, said movable frames can switch from close to open position (see the sequence in Figs. 3, 4 and 5), provided that they are aligned, forming a rest surface, numbered with (15).
• the present mechanism comprises synchronization tools, interposed between the movable frames, to move the frames from the close to open position (see again the sequence in Figs. 3, 4 and 5), and viceversa, in one movement. It comprises a quadrilateral (16), a quadrilateral (12) and a quadrilateral (17).
• the lifting and opening system of said mechanism is provided by the quadrilaterals (16) and (12), and by springs (not shown in the figures) to facilitate the operation.
• a first retain elastic mean is interposed between the lever (6) and the lever (1), while between the lever (1) and the fixed structure (7) is interposed a second retain elastic mean.
• Said elastic means can also be positioned on those elements fastened to elements (6), (2) and (7).
• the quadrilateral (12) provides the headrest (2) in the bed configuration, while, in the sitting configuration, said headrest is vertical.
• the quadrilateral (16) moves synchronically the rest of the mechanism by means of levers (8) and (9) hinged to the fixed structure (7).
• the lifting of said mechanism can also be obtained by means of two simple quadrilaterals (not shown in the figures), one end of each one is hinged to the fixed structure (7), and the other end is hinged to the frame (2).
• the two quadrilaterals are joined together by means of a lever, which makes synchronous their motion. Said quadrilaterals determine the vertical translation of the frame (2), from bottom up during the opening, from top down during the closing.
• the quadrilateral (17), shown in Fig. 6, comprising the levers (4), (5), part of lever (25) and part of lever (23), moves the sliding system of the seat cushions (21).
• the mechanism has been also designed to perform a particular trajectory. Following this trajectory the mechanism reaches a height above the ground that makes itself manageable, as one can see in Fig. 4.
• the strong point of this new mechanism is (Fig. 1) the fact that the lever (1) is hinged in the joint (2') between the headrest frame (2) and the central frame (3). From a functional point of view, it solves the problem of accidental closing of the bed.
• the lever (1) is hinged on the headrest frame (2); consequently, accidental closing may occur when te user is seated close to the hinged joint (2') between the headrest frame (2) and the adiacent frame (3).
• Another strong point of this mechanism is the movement of the seat cushions (21) by means of only two additional elements.
• the addition of elements (4) and (5) creates an easy system based on an articulated quadrilateral (17).
• An additional feature of the mechanism is that the lever (6) can have five holes (as in the embodiment of Fig. 1), or four holes an be bolted directly to the fixed structure (7).
• the lever (6) being hinged to the levers (8) and (9) performs a roto-translation.
• the lever (6) instead of roto- translating, can rotate around a point fixed with respct to the fixed structure (7). This means the elimation of the levers (8) and (9).

Landscapes

• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Nursing (AREA)
• Special Chairs (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)
• Invalid Beds And Related Equipment (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=33105019

Family Applications (1)

Country Status (12)

Cited By (4)

Families Citing this family (2)

Citations (4)

Family Cites Families (1)

• 2003
  • 2003-04-04 IT IT000019A patent/ITBA20030019A1/it unknown
• 2004
  • 2004-02-24 EP EP04713953A patent/EP1610648B1/en not_active Expired - Lifetime
  • 2004-02-24 RU RU2005133983/12A patent/RU2350240C2/ru not_active IP Right Cessation
  • 2004-02-24 CA CA2521015A patent/CA2521015C/en not_active Expired - Fee Related
  • 2004-02-24 PT PT04713953T patent/PT1610648E/pt unknown
  • 2004-02-24 US US10/550,909 patent/US20070094788A1/en not_active Abandoned
  • 2004-02-24 ES ES04713953T patent/ES2280945T3/es not_active Expired - Lifetime
  • 2004-02-24 DE DE602004004583T patent/DE602004004583T2/de not_active Expired - Fee Related
  • 2004-02-24 AT AT04713953T patent/ATE352991T1/de not_active IP Right Cessation
  • 2004-02-24 CN CN200480007044.1A patent/CN100594824C/zh not_active Expired - Fee Related
  • 2004-02-24 UA UAA200510423A patent/UA89164C2/uk unknown
  • 2004-02-24 WO PCT/IB2004/000568 patent/WO2004086913A1/en active IP Right Grant

Patent Citations (4)

Also Published As

Similar Documents

Legal Events