EP0917843A2 - Bett oder Stuhl mit verstellbarer Rückenlehne - Google Patents

Bett oder Stuhl mit verstellbarer Rückenlehne Download PDF

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Publication number
EP0917843A2
EP0917843A2 EP98120689A EP98120689A EP0917843A2 EP 0917843 A2 EP0917843 A2 EP 0917843A2 EP 98120689 A EP98120689 A EP 98120689A EP 98120689 A EP98120689 A EP 98120689A EP 0917843 A2 EP0917843 A2 EP 0917843A2
Authority
EP
European Patent Office
Prior art keywords
backrest
seat portion
bed
chair according
toothed sector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98120689A
Other languages
English (en)
French (fr)
Other versions
EP0917843A3 (de
Inventor
Alain Houli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaf SpA
Original Assignee
Shaf SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaf SpA filed Critical Shaf SpA
Publication of EP0917843A2 publication Critical patent/EP0917843A2/de
Publication of EP0917843A3 publication Critical patent/EP0917843A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head-, foot- or like rests for beds, sofas or the like
    • A47C20/04—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/043—Head-, foot- or like rests for beds, sofas or the like with adjustable inclination by means of peg-and-notch or pawl-and-ratchet mechanism

Definitions

  • the present invention relates to a bed or chair, particularly for outdoor use, with variable-position backrest.
  • Conventional sunbathing beds or garden chairs are substantially constituted by a seat portion and by a backrest which is hinged to the seat portion, proximate to its rear side, about an axis which is substantially horizontal and whose angle with respect to the plane of arrangement of the seat portion can be changed according to the requirements of the user by using the hinged coupling provided between the backrest and the seat portion.
  • the inclination of the backrest with respect to the seat portion is changed by means of a detent mechanism which is substantially constituted by a toothed sector centered on the hinge axis of the backrest, which which is rigidly coupled to the backrest and can be engaged by a lever which can be operated by the user and is associated with the seat portion.
  • the lever is simply meant to lock the rotation of the backrest about its hinge axis by engaging the teeth of the toothed sector, while in other beds the lever has an active function in producing the gradual rotation of the backrest about its own hinge axis, disengaging each time from the teeth of the toothed sector and engaging subsequent teeth.
  • the aim of the present invention is to solve the above problem by providing a bed or chair in which it is possible to vary the inclination of the backrest with respect to the seat portion without thereby requiring the user to get up from the bed or chair or in any case free the backrest completely.
  • an object of the present invention is to provide a bed or chair which is structurally simple and can be manufactured at competitive costs.
  • Another object of the present invention is to provide a bed or chair which is particularly simple and easy to use.
  • a bed or chair with variable-position backrest which comprises a seat portion and a backrest hinged to said seat portion, about a substantially horizontal axis, proximate to a rear side of said seat portion, characterized in that it comprises a detent device interposed between said seat portion and said backrest and adapted to lock the backrest in positions which lie at various angles with respect to a plane of arrangement of the seat portion, elastic means being interposed between said seat portion and said backrest which elastically contrast the rotation of said backrest about said hinge axis in a direction of rotation that causes an increase in an angle formed by said backrest with respect to the plane of arrangement of the seat portion.
  • the bed or chair according to the invention generally designated by the reference numeral 1 comprises a seat portion 2 and a backrest 3 which is hinged to the seat portion 2 proximate to a rear side of the seat portion 2 about an axis 4 which is substantially horizontal.
  • the bed or chair further comprises a detent device, generally designated by the reference numeral 5, which is interposed between the seat portion 2 and the backrest 3 and is suitable to lock the backrest 3 in positions which lie at various angles with respect to a plane of arrangement of the portion 2 in the rotation of the backrest 3 about its hinge axis 4.
  • a detent device generally designated by the reference numeral 5
  • elastic means 6 are interposed between the seat portion 2 and the backrest 3 and elastically contrast the rotation of the backrest 3 about the hinge axis 4 in a direction of rotation that increases the angle formed by the backrest 3 with respect to the plane of arrangement of the seat portion 2.
  • the detent device conveniently comprises at toothed sector 7, which is rigidly coupled to the backrest 3 and is arranged so that its center lies on the hinge axis 4, and a locking lever 8, which is associated with the seat portion 2 and can move on command from a locking position, in which it engages at least one tooth 12 of the toothed sector 7, to a release position, in which it is disengaged from the teeth 12 of the toothed sector 7.
  • the locking lever 8 is pivoted, by means of an intermediate portion, to the seat portion 2 about an axis 9 and has an actuation end 8a, which is optionally mushroom-shaped in order to allow easy grip by the user, and an opposite end, which is provided with two teeth, respectively a tooth 10 and a complementary tooth 11, which are meant to engage the teeth 12 of the toothed sector 7.
  • An elastic return means constituted by a spring 13, is interposed between the locking lever 8 and the seat portion 2 and elastically contrasts the rotation of the lever 8 about the axis 9 in the direction of rotation that disengages the locking lever 8 with respect to the toothed sector 7.
  • the locking lever 8 is arranged along one side of the seat portion 2 and the end 8a is arranged at a recess 14 which is appropriately provided on the side of the seat portion 2.
  • an extendable element 15 for example an elastic cord, which is fixed by means of one of its ends to the seat portion 2 and is directed substantially tangent or parallel to a tangent direction with respect to the toothed sector 7.
  • the opposite end with respect to the one that is rigidly coupled to the seat portion 2 is shaped so that it can be engaged by a hook 16 which is rigidly coupled to the toothed sector 7 and protrudes radially therefrom.
  • the extendable element 15 is accommodated inside a box-like body 17 fixed to the seat portion 2 for example by means of a coupling of the snap-action type.
  • the extendable element 15 is fixed, by means of one of its ends, to a rear wall of the box-like body 17, while its opposite end is associated with a block 18, which is provided with a retention lug 19 that engages an edge of the box-like body 17 from which it protrudes.
  • the block 18 is provided with a pin 20 which is meant to be engaged by the hook 16, which is rigidly coupled to the toothed sector 7.
  • the back of the teeth 12 has a portion which is shaped like an inclined plane, and the portion of the teeth 10 and 11 that is directed toward the back of the teeth 12 is shaped correspondingly, so as to allow the upward rotation of the backrest 3 also if the locking lever 8 is only partially disengaged from the teeth 12.
  • automatic locking of the backrest 3 during the opposite rotation, i.e., for lowering, is in any case ensured by the shape of the teeth 10 and 11 which mesh between the teeth 12.
  • the bed or chair according to the invention further comprises a friction means which is interposed between the seat portion 2 and the backrest 3 and is suitable to slow the rotation of the backrest 3 about its hinge axis caused by the elastic means 6.
  • the friction means comprises a raised ridge 21 which protrudes on the side of the toothed sector 7 around the axis 4 and can slide, with slight interference, against a corresponding ridge 22 provided in a region of the seat portion 2 which laterally faces the toothed sector 7.
  • the stop means comprises a lug 24 which is rigidly coupled to the backrest 3 and is arranged proximate to the ridge 21.
  • the lug 24 abuts against the ridge 22 when the backrest 3 is in the fully raised position.
  • the lug 24 can in any case move beyond the ridge 22 by utilising the elasticity of the ridge 22 and/or of the portion that bears the lug 24, in order to allow to fold the backrest 3 over the seat portion 2, as shown in Figure 2.
  • the seat portion 2 and the backrest 3 can be made of molded synthetic material.
  • the toothed sector 7 can be advantageously formed monolithically by molding together with the remaining part of the backrest 3.
  • the bed or chair has been shown only partially for the sake of simplicity.
  • the seat portion 2 and the backrest 3 have been shown.
  • the seat portion 2 can be completed by feet and/or by wheels to make it easier to move.
  • the backrest 3 When the bed is not in use, the backrest 3 can be folded over the seat portion 2, as shown in Figure 2, in order to minimize the total space occupied by the bed or chair. In this position, the hook 16 is disengaged from the pin 20 and therefore from the extendable element 15.
  • the backrest 3 When the bed is in use, the backrest 3 is rotated manually about the hinge axis 4, i.e., it is raised, until the hook 16 engages the pin 20, which is kept in the position in which it can be engaged by the hook 16 by the lug 19 which, as mentioned, rests against an edge of the box-like body 17, and until the first tooth 12 of the toothed sector 7 is engaged between the teeth 10 and 11 of the locking lever 8. In this position, the user can sit on the seat portion 2 and can rest his back against the backrest 3.
  • the backrest 3 can rotate about the hinge axis 4 and the user, by means of his own weight, can cause the backrest 3 to lower until it is in the intended position.
  • the user releases the actuation end 8a of the lever 8 which, through the action of the spring 13, engages, by means of its teeth 10 and 11, the teeth 12 of the toothed sector 7.
  • the backrest 3 can be lowered by acting on the locking lever 8 and by pushing with one's back against the backrest 3 so that the backrest reaches a position which is substantially co-planar with respect to the seat portion 2, as shown in particular in Figure 5.
  • the backrest 3 If the user wishes to raise the backrest 3 it is sufficient for him to act on the actuation end 8a of the lever so as to cause even only partial disengagement of the locking lever 8 from the toothed sector 7, as described above, and to lift his back to the position intended for the backrest 3.
  • the user can lock the backrest 3 in this position by releasing the locking lever 8.
  • the user can vary the position of the backrest 3 with respect to the seat portion 2 according to requirements without ever getting up from the bed or chair both when he wishes to lower the backrest 3 and when he wishes to raise it.
  • the bed or chair according to the invention fully achieves the intended aim and objects, since it allows to vary the position of the backrest both during lifting and during lowering without requiring the user to get off the bed or chair.
  • the materials employed, as well as the dimensions, may be any according to the requirements and to the state of the art.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Dentistry (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)
EP98120689A 1997-11-21 1998-11-06 Bett oder Stuhl mit verstellbarer Rückenlehne Withdrawn EP0917843A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI972605 1997-11-21
IT002605 IT1296497B1 (it) 1997-11-21 1997-11-21 Lettino o poltrona, particolarmente per esterni, con schienale a posizione variabile

Publications (2)

Publication Number Publication Date
EP0917843A2 true EP0917843A2 (de) 1999-05-26
EP0917843A3 EP0917843A3 (de) 2000-11-22

Family

ID=11378255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120689A Withdrawn EP0917843A3 (de) 1997-11-21 1998-11-06 Bett oder Stuhl mit verstellbarer Rückenlehne

Country Status (2)

Country Link
EP (1) EP0917843A3 (de)
IT (1) IT1296497B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243204A1 (de) * 2001-03-21 2002-09-25 Baschild S.r.l. Bett zum Sonnenbaden

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951285B2 (ja) * 1979-04-28 1984-12-13 アイシン精機株式会社 自動車用シ−トリクライニ
JPS6383054U (de) * 1986-11-18 1988-05-31
US5397168A (en) * 1993-09-02 1995-03-14 Bemis Manufacturing Company Chair with adjustable backrest

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243204A1 (de) * 2001-03-21 2002-09-25 Baschild S.r.l. Bett zum Sonnenbaden

Also Published As

Publication number Publication date
ITMI972605A1 (it) 1999-05-21
IT1296497B1 (it) 1999-06-25
EP0917843A3 (de) 2000-11-22

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