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EP0291433A1 - Klappstuhl - Google Patents

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Publication number
EP0291433A1
EP0291433A1 EP88430011A EP88430011A EP0291433A1 EP 0291433 A1 EP0291433 A1 EP 0291433A1 EP 88430011 A EP88430011 A EP 88430011A EP 88430011 A EP88430011 A EP 88430011A EP 0291433 A1 EP0291433 A1 EP 0291433A1
Authority
EP
European Patent Office
Prior art keywords
seat
branches
backrest
chair
folding
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Withdrawn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
EP88430011A
Other languages
English (en)
French (fr)
Inventor
Gaston Lapierre
Régis Delaye
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 EP0291433A1 publication Critical patent/EP0291433A1/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Withdrawn legal-status Critical Current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
    • A47C4/18—Folding chairs with inflexible seats having a frame made of metal
    • A47C4/20—Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe
    • A47C4/24—Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe with cross legs

Definitions

  • the present invention relates to a folding chair occupying, in the folded position, a volume whose height is reduced to that of its rear leg and whose thickness is limited to the added widths of the sides of said leg and the backrest.
  • the invention relates to a folding chair of the kind comprising a seat, for example of rectangular or square shape, a U-shaped back attached to the opposite sides of this seat by means of its branches and by means of 'joints, a U-shaped front foot, secured to opposite sides of the rear part of said seat, by means of its branches and by means of joints, and a rear foot comprising two parallel branches braced and attached, by l 'intermediate of its branches and by means of joints, on the one hand, at the lower end of the branches of said backrest and, on the other hand, to the branches of said front leg.
  • Folding chairs of this kind are, for example, described in French Patent Application N, 86/13244 and in document FR-A-1,510,290.
  • Such a folding chair which is extremely simple and occupies, in the folded position, a volume reduced to a minimum, has the disadvantage of not being able to overcome a uniformity due to the fact that the forms of its various constituent elements are imposed by the necessity of their embedding in each other to bring them back in the same plane.
  • folding chair which occupies, in the folded position, a relatively large volume whose height takes into account the depth of the seat and the height of the backrest and whose thickness comprises three stages consisting of the added thicknesses of the backrest, seat and rear leg .
  • Another drawback of such a chair results from the fact that the articulations of the seat with respect to the backrest and the rear leg are produced by means of screeds, the presence of which virtually excludes any possibility of making the frame of said chair in a material other than metal.
  • the limitation of the backrest tilting in the unfolding position is obtained by abutment of the upper face of the rear part of the seat frame against the lower edge of the bottom of the yoke, which causes damage to said visible upper face.
  • the present invention more particularly aims to remedy the drawbacks or inadequacies of folding chairs of the aforementioned kind and in particular described in French Patent Application N, 86/13244 and in document FR-A-1,510,290.
  • this object is obtained thanks to a folding chair of this type which is notably remarkable by the fact that it comprises, in the direction of its thickness, after folding, only two stages, that is to say a first stage constituted by the seat surrounded on three sides by the backrest, and a second stage consisting of the front leg surrounding the rear leg.
  • a folding chair is obtained, the volume of which has a reduced height and thickness, in the folded position, and allowing a greater diversity of forms for the production of its constituent elements.
  • the chair has two right and left metal frames constituted by four fittings assembled by means of joints, so as to constitute a deformable quadrilateral and on which are respectively fixed, for example by screwing, the seat, the backrest, the front foot and the rear foot of said chair ; the axes of articulation of these reinforcements corresponding, respectively, to the axes of articulation of the above-mentioned constituent elements of the latter.
  • the metal reinforcements can be produced separately and economically, in flat irons, by means of automatic machines which are not very complex.
  • To build the chair it then suffices to glue, screw or rivet, on the four flat bars constituting said frames, the four constituent elements of the chair: the seat, the backrest, the front foot and the rear foot, respectively, which can , therefore, be made in very different materials and shapes, which allows to obtain a wide variety of conformations of chairs from standard frames.
  • This chair can be made of any material with the required rigidity and solidity, used alone or in combinations. It mainly includes: - A seat 1 which can have different dimensions and shapes and, for example, a rectangular or square shape; - a file 2 having a general U shape; - a rear leg 3 consisting of two braced branches; - And a front leg 4 having a U shape or substantially.
  • File 2 is fixed, through its lateral branches 2a and by means of articulations comprising an axis 5, on the rear part of each side of the seat 1, at a distance from the rear edge of the latter.
  • the hinge pins 5 provide a direct connection between the seat 1 and the backrest 2 and are included both in the seat plane and in the backrest plane, so that, in the folding position, said seat can come to be housed inside the U formed by said backrest and in the plane thereof, so as to form one of the floors or levels of the chair in the folded position.
  • the front leg 4 is fixed, by means of the end of its lateral branches 4a and by means of articulations comprising an axis 6, at the rear end of each of the sides of the seat, behind the articulation 5 linking it to file 2.
  • the lateral branches 2a of the backrest 2 and the lateral branches 4a of the front leg 4 are arranged in the same vertical planes and the articulation axis 6 of said branches of the front leg on the seat is arranged in the plane of one of these two elements only.
  • the axis 6 is disposed in the plane of the branches 4a of the front leg, this axis being, on the other hand, carried by a lug 7 disposed below the plane in which the seat 1 is included and rigidly attached to the latter.
  • the rear leg 3 is attached, by means of its lateral branches 3a: on the one hand, by means of articulations comprising an axis 8, at the lower end of the branches 2a of the backrest 2, and, - on the other hand, by means of articulations comprising an axis 9, at an intermediate part of the branches 4a of the front leg 4.
  • the joints 8 of the rear foot 3 and the folder 2 are arranged a short distance from the top of the branches 3a of said foot, so that a short portion 3b of said branches is disposed above said joints.
  • This extension 3b is supported, through its free end, against the lower surface of the seat 1 and thus constitutes a stop limiting the pivoting of the constituent elements of the chair, in the open position.
  • This stop is, by its constitution, its location and its mode of action, particularly simple and solid, and it contributes to a good stability of the chair.
  • the hinge pins 8 of the backrest 2 on the rear leg 3, are arranged in the plane of only one of these two elements. According to the example illustrated, these axes 8 are arranged in the plane of the leg 3, each of said axes being, on the one hand, carried by a lug 10 secured to the branch considered 2a of the backrest and offset laterally relative to said branch.
  • the articulation of the front 4 and rear 3 legs via the legs 7 and 10, respectively, makes it possible, when folding the chair, to press the latter against the underside of the seat 1, said front foot coming to surround said foot rear on its three outer faces, thus constituting the second floor or level that said chair has in the folded position.
  • Figures 2 and 4 clearly show this configuration of the chair in the folded position which is constituted by the superposition of two floors, one of which is constituted by the seat 1 surrounded, on three of its faces, by the backrest 2, and whose l other is constituted by the rear leg 3 surrounded, on its three external faces, by the front leg 4. It can be seen in these figures that, in the folding position, the chair has a reduced volume whose height is limited to the height of his front foot and whose the thickness is reduced to the superposition of the two stages previously described.
  • FIG. 5 illustrates another important characteristic arrangement of the invention according to which the chair comprises two right and left metal frames on which the four constituent elements of said chair are fixed and by means of which the latter are assembled in an articulated manner.
  • Each of these frames includes four fittings 1 ′, 2 ′, 3 ′, 4 ′ assembled by means of articulations, so as to constitute a deformable quadrilateral, and on which are respectively fixed, for example by screwing, the seat 1, the backrest 2, the rear leg 3 and the front leg 4, of the chair.
  • These fittings have a reduced length relative to the sides of the components of the chair on which they are fixed.
  • Each seat fitting 1 ′ is fixed to the rear part 1 ⁇ of the lateral face considered of the seat 1 and it is articulated, on the one hand, by means of one of its terminal portions and by means of the 'axis 5, on the fitting 2' and, on the other hand, by means of the tab 7 with which its opposite end is provided and of the axis 6, on the fitting 4 '.
  • Each backrest fitting 2 ′ is fixed to the lower portion 2 ⁇ of the internal face of the branch 2a considered of the backrest 2 and it is articulated, on the one hand, through its intermediate part and by means of the 'axis 5, on the fitting 1' and, on the other hand, by means of the tab 10 which is provided with one of its ends and of the axis 8, on the fitting 3 ′.
  • Each rear leg fitting 3 ′ is fixed to the upper portion 3 ⁇ of the lateral face considered of the rear leg 3 and it is articulated, on the one hand, by means of one of its ends and of the axis 8 , on the lug 10 of the fitting 2 ′ and, on the other hand, by means of its intermediate portion and the axis 9, on the fitting 4 ′.
  • each front leg fitting 4 ′ is fixed to the upper portion 4 ⁇ of the internal face of the branch 4a considered of the front leg 4 and it is articulated, on the one hand, by means of its intermediate portion and the 'axis 9, on the fitting 3 ′ and, on the other hand, by means of one of its ends and by means of the axis 6, on the lug 7 with which one of the ends of the fitting 1 ′.
  • FIG. 6 There is shown in particular in Figures 6 and 7, an alternative embodiment of the folding chair whose seat is arranged to constitute a small trunk, the components of said chair being further shaped and dimensioned so that the latter affects, in folding position, the general shape of a briefcase.
  • the seat 1 has a greater depth, while the branches 2a, 3a, 4a, of the backrest 2, the rear foot 3 and the front foot 4, respectively, have also wider widths.
  • the chair In the folding position, the chair also has only two stages, one of which is constituted by the upper half-part 1a of the trunk seat 1 surrounded, on three of its sides, by the U-shaped backrest 2 and the other of which is formed by the lower half-part 1b of said seat surrounded on three of its sides by the rear foot 3 in the form of U, itself even surrounded, on its three lateral faces, by the U-shaped front leg 4.
  • the lateral branches 2a and 4a of the backrest 2 and of the front leg 4, respectively, are arranged in the same vertical planes, said backrest being articulated, by means of the axis 5, on the upper half-part 1a of the seat 1, while that said front leg is articulated, by means of axis 6, on the lower half-part 1b of said seat.
  • the seat 1 comprises, on each of its lateral sides, a rebate 1c whose height corresponds to that of its lower half-part and to the width of the branches 3a of the rear leg 3; these rebates allowing the accommodation of said branches in the folding position of the chair.
  • the trunk constituted by the seat 1 is provided with a cover 1d constituting the upper face thereof, this cover being articulated on the body of the trunk by means of its rear part, for example by means of a hinge 11 fixed on its rear edge and on the rear wall of the seat.
  • the front edge of this cover and the front wall of the trunk are equipped with complementary members of a magnetic closing device known per se (not shown) enabling the trunk to be kept in the closed position during transport of the folded chair in the form of briefcase.
  • the cover 1d and the opening 13 delimited by the three sides of the backrest, are shaped and dimensioned to also allow the tilting of the said cover, through the said opening, in the folding position of the chair, in order to have access to the trunk, in this position.
  • the backrest 2 and the front leg 4 are shaped and dimensioned so that the upper crossmember 2b of the said backrest and the lower crossmember 4b of the said front leg are placed face to face, in the folding position, and occupy, in this situation, a close position allowing them to be grasped simultaneously by hand, so that the chair-chest thus produced can be conveniently transported.
  • the cross member 2b which generally has a flat shape and / or the cross member 4b which can also have such a shape is or are provided with an elongated opening 2c and 4c, respectively, arranged in the transverse direction and making it possible to constitute a handle 12.
  • the lower ends of the branches 4a and 3a of the front foot 4 and the rear foot 3, respectively, intended to bear on the ground advantageously have curved surfaces.
  • the curved bearing surfaces of the legs of the rear leg are oriented in the direction of the cross member 4b of the front leg 4 and are hidden, laterally, by the legs 4a of said leg; they are therefore not visible.
  • the lower end of the lateral branches 3a of the rear leg 3 is provided, laterally, with a protuberance 3c oriented in the transverse direction.
  • these protrusions 3c are placed in front of the curved support surface 4e of the lower end of the lateral branches 4a of the front leg ( Figures 10 and 11).
  • Another embodiment of the invention understandable without additional drawings is to articulate the rear foot directly under the backrest, which results, after folding, in the fact that the U of the rear foot is not pressed under the seat but under the U of the backrest, while the U of the front foot surrounds the U of the rear foot, possibly extending around the U of the backrest.
  • This mode of execution is larger than the other.

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  • Special Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
EP88430011A 1987-05-06 1988-05-06 Klappstuhl Withdrawn EP0291433A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8706428 1987-05-06
FR8706428A FR2614771B1 (fr) 1987-05-06 1987-05-06 Chaise pliante a dossier rabattable

Publications (1)

Publication Number Publication Date
EP0291433A1 true EP0291433A1 (de) 1988-11-17

Family

ID=9350856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88430011A Withdrawn EP0291433A1 (de) 1987-05-06 1988-05-06 Klappstuhl

Country Status (2)

Country Link
EP (1) EP0291433A1 (de)
FR (1) FR2614771B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636221A1 (fr) * 1988-09-14 1990-03-16 Delaye Regis Siege pliant a pieds croises articules
FR2640859A1 (en) * 1988-12-22 1990-06-29 Lapierre Gaston Reversible folding chair
WO2002054912A1 (en) * 2001-01-12 2002-07-18 The Folding Company Ltd. Folding linkage
US6899384B1 (en) * 2004-03-26 2005-05-31 Taiwan Shin Yeh Enterprise Co., Ltd. Foldable chair assembly
US20130313864A1 (en) * 2012-05-25 2013-11-28 Fermi Chi Hung Lau Swivel stool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398478A (en) * 1944-04-19 1946-04-16 Valenti Ernest Combination valise and chair
FR1510290A (de) * 1968-04-03
US4087128A (en) * 1977-08-10 1978-05-02 Shepard Clayton L Folding chair

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1510290A (de) * 1968-04-03
US2398478A (en) * 1944-04-19 1946-04-16 Valenti Ernest Combination valise and chair
US4087128A (en) * 1977-08-10 1978-05-02 Shepard Clayton L Folding chair

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636221A1 (fr) * 1988-09-14 1990-03-16 Delaye Regis Siege pliant a pieds croises articules
FR2640859A1 (en) * 1988-12-22 1990-06-29 Lapierre Gaston Reversible folding chair
WO2002054912A1 (en) * 2001-01-12 2002-07-18 The Folding Company Ltd. Folding linkage
US6899384B1 (en) * 2004-03-26 2005-05-31 Taiwan Shin Yeh Enterprise Co., Ltd. Foldable chair assembly
US20130313864A1 (en) * 2012-05-25 2013-11-28 Fermi Chi Hung Lau Swivel stool
US8931832B2 (en) * 2012-05-25 2015-01-13 Fermi Chi Hung Lau Swivel stool

Also Published As

Publication number Publication date
FR2614771A1 (fr) 1988-11-10
FR2614771B1 (fr) 1989-08-18

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