EP0295191A1 - Klappstuhl mit Sitz und Rückenlehne, gestützt durch einen X-förmigen Stützrahmen - Google Patents

Klappstuhl mit Sitz und Rückenlehne, gestützt durch einen X-förmigen Stützrahmen Download PDF

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Publication number
EP0295191A1
EP0295191A1 EP88420173A EP88420173A EP0295191A1 EP 0295191 A1 EP0295191 A1 EP 0295191A1 EP 88420173 A EP88420173 A EP 88420173A EP 88420173 A EP88420173 A EP 88420173A EP 0295191 A1 EP0295191 A1 EP 0295191A1
Authority
EP
European Patent Office
Prior art keywords
seat
articulated
base
backrest
parallel
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Withdrawn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
EP88420173A
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English (en)
French (fr)
Inventor
Monique Estelle Reale épouse Garcin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0295191A1 publication Critical patent/EP0295191A1/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Withdrawn legal-status Critical Current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
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/04—Folding chairs with inflexible seats
    • A47C4/045—Folding chairs with inflexible seats foldable side to side only

Definitions

  • the present invention relates to a folding seat provided with a seat and a back supported by an X-shaped base.
  • Folding seats currently known generally have the disadvantage, due to the complexity of their construction, of being difficult to fold up in the storage or transport position, or to deploy in the position of use. In addition, during these operations, the user runs a high risk of pinching his fingers. Finally, it is rare that in the folded storage position, these seats do not yet have significant bulk.
  • a stool that is to say a seat without backrest of the type comprising a seat supported by an X-shaped base, the two pairs of parallel branches of which are articulated on a common horizontal axis and in which the seat is constituted by at least two panels hinged to each other, along their adjacent edges, along an axis of articulation parallel to the common axis of articulation of the legs of the base and situated vertically above this axis, each of the side panels being, moreover, articulated, by its free edge, to the upper ends of a same pair of parallel legs of the base by means of a hinge pin which is also , parallel to the common axis of articulation of the pairs of legs of the base.
  • This seat is particularly simple to carry out, without the risk of pinching since it suffices to rotate the two pairs of legs of the base around their common axis of articulation in the direction aimed at bringing their ends together higher on the one hand and lower on the other. To do this, it suffices to force, in the direction of one another, the two free lateral edges of the seat, the panels of which close in the manner of a book as their axis of central joint lowers.
  • the deployment of the seat is obviously done by the reverse operation.
  • the present invention aims to allow this seat to be fitted with a folding backrest without hampering the folding of the seat and its base.
  • the seat which it relates to and which is of the aforementioned type is equipped with a backrest consisting of two uprights connected to one another by a plurality of substantially horizontal bars, offset vertically with respect to each other and each of which consists of two rods symmetrical elements articulated to each other by a central articulation axis parallel to that of the legs of the base, each of these elementary rods being itself articulated, by its other end, to one of the uprights, along a axis parallel to that of the base, while each upright is articulated, by its lower end, to the upper end of one of the posterior branches of the base.
  • means are provided to limit, in the deployed position of the seat, the pivoting towards the outside of the uprights of the backrest and, on the other hand, the distance separating the axes of articulation from the uprights of the backrest of the ends of the same bar, when the seat is in the deployed position, is less than twice that separating the two axes of articulation of the same elementary rod of this bar. This avoids any alignment of the three axes of articulation of a bar, at rest.
  • each backrest bar will automatically fold up or down when the seat is folded and, if we want to reverse this phenomenon, it will suffice to act on each bar to reverse the relative positions of their axes of articulation.
  • the means limiting the pivoting towards the outside of the backrest uprights, when the seat is in the deployed position consist of a bent extension provided at the lower end of each of them and able to bear against the corresponding lateral articulation axis of the seat to one of the pairs of legs of the base.
  • the lower bent extension of each upright can be made in any suitable way such as by cutting or forging or by adding a part at an angle fixed by riveting or welding.
  • this seat When this seat is fitted with a backrest, it can easily be fitted with two armrests.
  • each armrest is formed by an elbow-shaped piece, a horizontal branch of which is articulated, with its free end bent back, to the corresponding amount of the backrest and the other branch of which, vertical, is articulated at the upper end the corresponding front branch of the base, the two articulation axes of each armrest being parallel to the central articulation axis of the seat panels.
  • the example illustrated in the drawing relates to a folding armchair comprising an X-shaped base 2 supporting a seat 3, a backrest 4 and two armrests 5.
  • the base in X 2 of this chair is constituted, in a manner known per se, by two pairs 2a, 2b of parallel branches, articulated together on a common horizontal axis 6, the point of articulation of each branch 2a or 2b being located substantially in the middle.
  • the free lower ends of the branches 2a, 2b of the same pair are braced, in a manner known per se, by a horizontal rod, respectively 7 and 8.
  • This known base 2 is intended to support the seat 3.
  • this seat 3 consists of two identical panels 3a hinged together by means of a horizontal axis 10 parallel to the axis 6 of articulation of the branches 2a, 2b of the base 2 and situated vertically on this axis.
  • Each seat panel 3 is also articulated, by its free lateral edge, to the upper ends of one of the pairs of branches 2a or 2b of the base 2 by means of a horizontal axis 9 which is also parallel to the axis 6 of articulation of the branches 2a, 2b of the base 2.
  • This stool could be easily brought into the folded position in acting all simply on the axes 9 of articulation of the panels 3a of the seat 3, so as to tend to bring them closer to one another, that is to say in the direction of the arrows 11 and 12, respectively.
  • the two pairs of branches 2a, 2b of the base 2 would be pivoted simultaneously in the direction corresponding to their approaching one another and the closing of the seat 3 by folding down l one against the other, like a closed book, of its two panels 3a, as can be seen in FIG. 5.
  • the folded seat can obviously be easily unfolded by acting on the axes 9 , in the opposite direction to the arrows 11 and 12.
  • the seat shown in the drawing is not only a stool but an armchair, that is to say a stool equipped with a backrest 4 and two armrests 5. These additional elements are obviously arranged so as not to interfere folding the seat to put it in the storage or transport position.
  • the backrest 4 consists of two uprights 13 each of which is articulated, by its lower end and along a hinge axis 14 parallel to the hinge axis 6 of the two pairs of branches 2a, 2b of the base 2, at the upper end of the corresponding posterior branch of the two pairs of branches 2a, 2b of the base 2.
  • the two uprights 13 of the backrest 4 are, moreover, linked to each other by a plurality of bars 15 (three in the example illustrated in the drawing), offset vertically with respect to each other.
  • Each bar 15 is made up of two symmetrical elementary rods 15a, articulated to each other by a central axis 16.
  • Each elementary rod 15 is, moreover, articulated, by its lateral end, to the corresponding upright 13 of the backrest 4, along an axis 17.
  • the two axes 17 and the axis 16 of each bar 15 are also parallel to the axis 6 of articulation of the two pairs of branches 2a, 2b of the base 2.
  • a stop limiting its pivoting in the vertical position towards the outside and, on the other hand, the distance D separating the hinge pins 17 from the lateral ends of each bar 15 of the backrest 4, when the latter is in the deployed position as illustrated in FIGS. 1 to 3, is less than twice the distance d separating one of the articulation axes 17 from the lateral ends of a bar 15, from the axis of central articulation 16 of this same bar.
  • the central articulation axis 16 of the bar 15 is located either above or below the articulation axes 17 lateral ends of the same bar 15 and the passage from one to the other of these positions can only be obtained by a transient deformation, such as an increase in the outward bending of the bar 15 considered.
  • FIG. 1 the two possible positions of the bars 15 are shown, respectively, in solid lines and in broken lines.
  • FIG. 4 shows a particular embodiment of the means limiting vertically the pivoting towards the outside of the uprights 13 of the backrest 4.
  • These means consist of a bent extension 13a of the lower end of the upright 13 considered, this extension being intended to come into abutment against the corresponding hinge pin 9 of the seat 3 when this amount 13 reaches its vertical position at the end of unfolding of the seat.
  • This extension 13a can be made from any which suitable way such as by cutting, forging, filler or other similar.
  • this extension 13a is obtained by adding, against the lower end of each upright 13 of the backrest 4, a piece in the form of a square 13 ′, one branch of which constitutes the extension 13a and the other branch of which 13b is fixed to the lower end of the upright 13 considered, on the one hand by the hinge pin 14 of this upright to the rear branch 2a or 2b of the base 2 and, on the other hand, by a rivet 18.
  • This fixing could just as easily be obtained, if possible, by welding the bracket 13 ′ to the lower end of this upright 13.
  • FIG. 5 shows that the presence of the backrest 4 does not in any way hinder the folding of this seat into the storage or transport position.
  • the seat illustrated in the drawing has, in addition, armrests 5.
  • Each of these armrests 5 is constituted by a bent piece having a horizontal branch 5a provided with a bent free end 5b, articulated to the corresponding amount 13 of the backrest 4 by l 'through an axis 19 and a vertical branch 5c articulated, via a axis 21, at the upper end of the corresponding front branch 2a or 2b of the base 2.
  • the axes 19 and 21 are parallel to the axis 6 of articulation of the branches 2a, 2b of the base 2.
  • the seat which has just been described is essentially made of flat metal profiles and most of the articulation axes are then constituted by simple rivets, which makes it possible to obtain a quality seat but of a low cost price. .
  • each bar 15 of the backrest 4 consisted of two elementary rods 15a, hinged together by their opposite ends and to one of the uprights 13 of the backrest 4 by their other ends and that, by a judicious choice of the lengths of these two elementary rods, it was possible to impose one or the other of their two possible configurations on them.
  • each elementary rod 15a of the bars 15 of the backrest 4 has two curved directions opposite with point of curvature between them.
  • the filling pieces of the panels 3a of the seat 3 are quite simply constituted by wooden slats 22, suitable for being fixed, too, to the crosspieces 23 of this seat by riveting, screwing or in any other appropriate manner.

Landscapes

  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP88420173A 1987-06-02 1988-05-31 Klappstuhl mit Sitz und Rückenlehne, gestützt durch einen X-förmigen Stützrahmen Withdrawn EP0295191A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708015A FR2616054B1 (fr) 1987-06-02 1987-06-02 Meuble pliant pourvu d'un pietement en " x "
FR8708015 1987-06-02

Publications (1)

Publication Number Publication Date
EP0295191A1 true EP0295191A1 (de) 1988-12-14

Family

ID=9351850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420173A Withdrawn EP0295191A1 (de) 1987-06-02 1988-05-31 Klappstuhl mit Sitz und Rückenlehne, gestützt durch einen X-förmigen Stützrahmen

Country Status (3)

Country Link
EP (1) EP0295191A1 (de)
FR (1) FR2616054B1 (de)
PT (1) PT87640A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820841A1 (de) * 1998-05-04 1999-03-18 Becker Egmont Dipl Designer Fh Klappstuhl mit fester Sitzfläche, Armlehnen und flexibler, ergonomisch ausgeformter Rückenlehne, einhändig faltbar, transportabel, stapelbar
WO2015055263A1 (de) * 2013-10-16 2015-04-23 Bulthaup Gmbh & Co. Kg Strukturelement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1557814A (en) * 1921-08-05 1925-10-20 Arthur F Derse Hinge for folding chairs
US1765845A (en) * 1926-10-21 1930-06-24 Bromwell Wire Goods Company Folding chair
US4542916A (en) * 1982-11-06 1985-09-24 Kassai Kabushikikaisha Mechanism for locking the opened state of a baby carriage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1557814A (en) * 1921-08-05 1925-10-20 Arthur F Derse Hinge for folding chairs
US1765845A (en) * 1926-10-21 1930-06-24 Bromwell Wire Goods Company Folding chair
US4542916A (en) * 1982-11-06 1985-09-24 Kassai Kabushikikaisha Mechanism for locking the opened state of a baby carriage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820841A1 (de) * 1998-05-04 1999-03-18 Becker Egmont Dipl Designer Fh Klappstuhl mit fester Sitzfläche, Armlehnen und flexibler, ergonomisch ausgeformter Rückenlehne, einhändig faltbar, transportabel, stapelbar
WO2015055263A1 (de) * 2013-10-16 2015-04-23 Bulthaup Gmbh & Co. Kg Strukturelement

Also Published As

Publication number Publication date
FR2616054A1 (fr) 1988-12-09
FR2616054B1 (fr) 1991-02-22
PT87640A (pt) 1989-05-31

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