EP0774222A1 - Stuhl, welcher an die Körperform des Benutzers anpassbar ist - Google Patents

Stuhl, welcher an die Körperform des Benutzers anpassbar ist Download PDF

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Publication number
EP0774222A1
EP0774222A1 EP96402402A EP96402402A EP0774222A1 EP 0774222 A1 EP0774222 A1 EP 0774222A1 EP 96402402 A EP96402402 A EP 96402402A EP 96402402 A EP96402402 A EP 96402402A EP 0774222 A1 EP0774222 A1 EP 0774222A1
Authority
EP
European Patent Office
Prior art keywords
seat
elements
support structure
dorsal
seat according
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.)
Granted
Application number
EP96402402A
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English (en)
French (fr)
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EP0774222B1 (de
Inventor
Roger Prieur
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0774222A1 publication Critical patent/EP0774222A1/de
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Publication of EP0774222B1 publication Critical patent/EP0774222B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs

Definitions

  • the present invention relates to a seat adaptable to the morphology of the user.
  • the seat disclosed in patent application WO 92/06621 constitutes an improvement to traditional relaxation chairs, in that it incorporates a device making it possible to reduce the camber of the lumbar support as the seat is tilted backwards, so as to follow the deformations of the user's spine.
  • This known seat also incorporates a support for the neck which pivots in the opposite direction to the inclination of the seat.
  • European patent application EP-A-0 240 389 relates to a seat, the back of which is formed by two parallel metal uprights on which are fixed transversely two bands articulated to each other at the lumbar region. of the user, and whose seat is formed of two bands, hinged together and to the lower band of the backrest. This document also provides for an automatic modification of the shape of the lumbar region of the seat according to the inclination thereof.
  • the upper strip of the seat back disclosed in the aforementioned patent application EP-A-0 240 389 can be adjusted in height by a rack system, lockable slide, etc., so that this seat is adaptable to users with different back heights.
  • an ergonomic seat available commercially from Herman Miller and Co., Paris, France under the trade name AERON, which incorporates a cushion mounted sliding on the rear face of the backrest, intended to form a lumbar support adjustable in height, which can have two different depths. This seat is therefore suitable for users with a more or less pronounced and more or less high camber.
  • the invention therefore provides a seat comprising a base and a support structure comprising a part seat and a back part connected to each other, said back part supporting at least two adjacent back elements, called lower and upper, and said seat part supporting at least one seat element, characterized in that that said seat and back elements are connected to the support structure by fixing means which allow translation from top to bottom, and vice versa, back elements, independently of each other, and translation from front to back, and vice versa, of said at least one seat element, along said support structure, so that the position of said back and seat elements can be adjusted according to the morphology of the user.
  • the seat comprises two seat elements, called anterior and posterior, which are adapted to slide independently of one another along the support structure.
  • the seat according to the invention further comprises a third said intermediate dorsal element, disposed between the upper and lower dorsal elements, which is preferably connected to the dorsal part of the support structure by fixing means which allow it to be moved vertically along said supporting structure, independently of the upper and lower back elements.
  • the intermediate back element suitably has a thickness less than the thickness of said upper dorsal element and / or of said lower dorsal element.
  • the upper dorsal element correctly supports the neck and the lower dorsal element conforms to the camber of the user, so that his spine retains a good profile.
  • the lower dorsal element and / or the upper dorsal element can incorporate a manually controlled air pump, intended to vary their thickness.
  • the fixing means preferably consist of a first and a second screw joined coaxially head to tail, the solid rod of said first screw being screwed into the hollow rod of said second screw, and by a helical spring, wound around said second screw , which is preferably embedded in a block of vibration-absorbing material, such as rubber.
  • the support structure preferably comprises at least one hollow rod, having a longitudinal slot, in which said fixing means are adapted to slide. Preferably, it comprises a pair of such parallel hollow rods.
  • the hollow rod can be made of any sufficiently rigid material, such as a metal - for example cast aluminum - carbon fiber, etc. and it can have a cross section of any shape, for example cylindrical, trapezoidal, square, etc.
  • the support structure can be a solid structure which has slots in which the aforementioned fixing means are adapted to slide.
  • the fastening means could also be constituted by fastening systems with loops and hooks, of the Velcro R type, pressures, etc. or by a rack or the like.
  • the seat and back elements are for example each constituted by a rigid shell which contains a foam, latex or similar structure, or by a rigid shell on which a canvas, such as polyurethane, is stretched.
  • the seat according to the invention can be used as an office seat, a relaxation chair or a motor vehicle seat, and it can be provided with all the means which usually equip these types of seats.
  • the base can be provided with means allowing its height adjustment.
  • the back part and the seat part can be hinged to each other so that the angle formed between these parts can vary. In that case, it is preferable that the position of the user's camber relative to the seat varies only slightly depending on the inclination of the seat.
  • the angle between the dorsal part and the seat part can be adjusted manually, once and for all, by the user, and not be affected thereafter by the mechanical tilting of the seat from the sitting position straightened to the lying down position and vice versa.
  • the seat can also include armrests connected to the supporting structure by means of variable length, so as to allow adjustment of the width of the seat.
  • the seat can integrate a footrest articulated to said front seating element, a device for assisting the user to stand up, called a "standing device”, etc. It will also be noted that several seats according to the invention can be assembled side by side to form a sofa or a row of seats which can be used, in particular, in public places, by means of road, air or sea passenger transport, etc.
  • the terms “upper” and “lower”, applied to the back elements, and the terms “anterior” and “posterior”, applied to the seat elements, designate the positions of these elements relative to a seat user according to the invention, along the support structure of said seat. The same is true for the adverbs "before”, “back”, “up” and “down”.
  • FIG. 1 shows a seat according to the invention used as a relaxation chair
  • a seat 1 which includes a seat 2 articulated to a backrest by conventional means, which are known to those skilled in the art.
  • the backrest is made up of three substantially rectangular lower 3, intermediate 4 and upper 5 elements, arranged one above the other and spaced from each other, which respectively form a lumbar support, a back support and a headrest.
  • These three back elements each have a length of approximately 54 cm and a width of approximately 21 cm, the total height of the backrest being approximately 78 cm when they are spaced apart as much as possible from each other.
  • These elements are included in a common expandable cover 25, made of fabric or leather, partially cut away in FIG.
  • the back elements 3, 4, 5 are slidably mounted on a support structure 60 formed by two hollow metal rods 6a and 6b, parallel and substantially vertical, forming the dorsal part, and by two similar rods, substantially horizontal (not visible in FIG. 1 ), forming the seat part of the supporting structure.
  • a side panel 7 is arranged vertically along a side edge of the seat 2.
  • the side panel 7 extends substantially from the ground to the lower edge of the back element 4.
  • a support handle 9 is provided at the upper front end of the side panel 7 to assist a user while he sits or stands up.
  • An armrest 8 of convex shape, made of a flexible material, such as fabric or leather for example, is fixed on the top of the panel 7 and extends longitudinally over a major portion of the length of said panel 7.
  • the armrest 8 supports a control panel shown at 21.
  • An elongated cushion 10 is disposed along said lateral edge of the seat 2, against the side panel 7.
  • the side panel 7 is supported, at the front, by a foot 11 and, at the rear, by a caster (shown at 24 in Figure 2), which are mounted at its respective front and rear ends.
  • a caster shown at 24 in Figure 2
  • the side panel 7 could be supported by two feet, such as 11.
  • the side panels 7, 7 ' are fixed to the seat part of the support structure by a mechanism of variable length (not shown), which makes it possible to separate the side panels 7, 7' to vary the width of the seat in according to the user's morphology.
  • a footrest 16 of conventional structure is articulated to the seat 2 and supported by metal rods 6 "a and 6" b, similar to the rods 6a and 6b.
  • the seat according to the invention when used as a relaxation chair, can incorporate all the accessories known in the art and which are conventionally provided with such seats, such as a stand-up device.
  • Figure 2 is a rear view of the seat described above, on which we see the rear panel 12 which is intended to conceal the part of the seat located below the seat 2.
  • This figure also shows that the rear faces of the back elements 3 and 5 are respectively fitted with pumps 19 and 20 which make it possible to actuate manually air cushions placed in the corresponding back elements.
  • the rear faces of these elements, as well as that of the back element 4 are respectively connected to the rods 6a and 6b by fixing means 13a and 13b which are substantially cylindrical, which will be described in more detail with reference to FIG. 6.
  • the rods 6a and 6b are visible at the rear of the seat. Alternatively, they could be hidden, for aesthetic purposes, by a rigid structure such as a plywood structure, possibly dressed in fabric or leather.
  • the supporting structure 60 of the relaxation chair according to the invention is in fact made up of a dorsal part 6, which has the profile of the shape of a broken line forming an angle substantially returning to its middle , a seat part 6 'articulated to the back part 6 at 14, which has a profile in the form of a broken line forming a projecting angle substantially in the middle, and a part of footrest 6 " , articulated to the seat part 6 ′ at 15.
  • the seat part 6 ′ supports two front 17 and rear 18 seat elements, which are arranged one behind the other, and mounted sliding, along the supporting structure 60.
  • seat elements 17 and 18 each have a width of about 21 cm and the maximum depth of the seat, which can be obtained by spreading the seat elements 17, 18 as far as possible. one from the other is about 54 cm.
  • the seat elements 17, 18 and the footrest 16 are connected to the structure por teuse 60 by means of fixing means, such as 13b, which will be further described with reference to FIG. 6.
  • Each of the elements 3, 4, 5, 16, 17 and 18 consists of a plywood shell 26 containing a foam structure 27, such as Bultex R foam, or in cellular latex.
  • a foam structure 27 such as Bultex R foam, or in cellular latex.
  • the structure of the back elements and of the seat elements is not limited to this embodiment and that it is possible, as a variant, to use elements consisting of a rigid shell of substantially hemispherical shape, on which a canvas, such as polyurethane, is stretched, and which are associated with a carrying structure made of carbon fiber by fixing means which may be rigid (the stretched canvas itself conferring a certain flexibility on said elements). In this way a seat is obtained which has a very light configuration, which can be advantageous both aesthetically and from the point of view of its cost price.
  • the support structure 60 consists, as described above, of pairs of parallel hollow rods.
  • the number of rods forming the support structure is not limited.
  • the inclination of the seat, the raising of the footrest, the spacing of the armrests, the inflation of the air cushions and the other functions of the seat according to the invention can be controlled either manually - for example, as regards the '' tilting, by the pressure of the body on the backrest and / or by movement of the armrests - either automatically, using one or more control buttons which can be located, for example, on the internal face of the side panels 7, 7 'or on a control panel arranged on top of the armrests 8, 8', as illustrated in 21 'in FIG. 3.
  • a motorized seat provided with a control panel, it will be possible to in addition provide for the possibility of electronically memorizing a certain number of seat adjustments. It is also possible to provide a combination of manual and automatic controls.
  • Figures 4 and 5 show another embodiment of the seat according to the invention, which is used as an office chair. Parts of this seat that are the same or similar to corresponding parts of the seat shown in Figures 1 to 3 will be designated by the same reference numerals, added to 100, and will not be further described below.
  • the seat 101 illustrated in FIGS. 4 and 5 differs from the seat illustrated in FIGS. 1 to 3 in that it consists of a base 111 with five branches, incorporating an oleopneumatic cylinder intended to vary the height of the seat, the structure of which is well known to those skilled in the art, which supports the seat part 106 ′, in the vicinity of the posterior and anterior ends thereof.
  • two arcuate rods 107 and 107 ' project forward, upward and outward from the joint 114 of the dorsal portion 106 to the seat portion 106'.
  • FIG. 6 illustrates a fixing means 13a which connects the rigid shell 26 of a dorsal element to the hollow metal rod 6a of the seat shown in FIGS. 1 to 3.
  • the fixing means 13a comprises a hollow screw 30 with a round head and cruciform impression, which extends in a passage 37 formed through the thickness (approximately 12 mm) of the rigid shell 26, and the head of which rests on the internal surface of said shell.
  • the free end of the screw 30 extends transversely in a longitudinal slot 36 provided in the hollow metal rod 6a.
  • the wall of the cavity of the screw 30 is threaded and adapted to cooperate with the external thread of a screw 31 with a cylindrical head and a hexagonal cavity.
  • the head of the screw 31 is pressed against the internal surface of the hollow metal rod 6a, which is of trapezoidal section in this embodiment, transversely with respect to and on either side of said longitudinal slot 36, so that the screw rod 31 extends through the longitudinal slot 36 and into the screw 30.
  • a Teflon washer R 32 is interposed between the head of the screw 31 and the internal wall of the hollow rod 6a.
  • a helical spring 34 is wound around the screw 30, in the region of the screw 30 which is located between the hollow rod 6a and the back element to be assembled therewith.
  • the spring 34 is embedded in a block 35 of vibration-absorbing elastomeric material, such as rubber, which has a diameter of about 44 mm and a length of about 22 mm.
  • the operation of the fixing means is as follows.
  • a user wishes to modify the structure of the seat according to the invention to adapt it to his morphology, it is sufficient for him or a third party to stand behind the seat and, only after having pressed his thumbs against the turned supporting structure towards him, he exerts a pressure with both hands, using his other fingers, on the user side face of the back element to be adjusted, in the extension of the two fixing means 13a, 13b, for example at the locations indicated by crosses in FIG. 1.
  • the pressure exerted compresses the spring 34 and, simultaneously, the elastomer block 35.
  • the compression of the means elastic puts the head of the screw 31 out of support with the washer 32 (position shown in dotted lines) and thus frees the head of the screw 31 in the housing 38 defined by the internal walls of the hollow rod 6a, housing 38 in which said screw 31 can al ors be moved in substantially vertical translation, guided along the longitudinal slot 36.
  • the back element can thus be moved from bottom to top and vice versa, to a desired position.
  • the spring 34 and the elastomeric material 35 expand to their rest position illustrated in FIG. 6, in which the head of the screw 31 is in abutment against the washer 32 : the back element is then kept in the new chosen position.
  • the same operation can be repeated to adjust all the back elements of the embodiments illustrated in the previous figures.
  • the adjustment of the seat elements is done in a similar manner by exerting a pressure with both hands on the user side face of said elements, in the extension of the fixing means, then by moving said elements in substantially horizontal translation, along the parts of 'corresponding seat.
  • the elasticity of the spring 34 and of the elastomeric material 35 must be such that normal or sudden movements of the body of the user, exerting pressure both on the back elements and on the seat elements, are not not sufficient to release the head of the screw 31 inside the housing 38.
  • the previously described fixing means confer a certain flexibility on the back elements and the seat elements, which further increases the comfort of the seat according to the invention.
  • the invention provides a seat which is suitable for any type of user, whatever its morphology, thus offering the user maximum comfort associated with prevention of spinal pain.
EP19960402402 1995-11-16 1996-11-12 Stuhl, welcher an die Körperform des Benutzers anpassbar ist Expired - Lifetime EP0774222B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9513583 1995-11-16
FR9513583A FR2741249B1 (fr) 1995-11-16 1995-11-16 Siege adaptable a la morphologie de l'utilisateur

Publications (2)

Publication Number Publication Date
EP0774222A1 true EP0774222A1 (de) 1997-05-21
EP0774222B1 EP0774222B1 (de) 2002-04-03

Family

ID=9484621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960402402 Expired - Lifetime EP0774222B1 (de) 1995-11-16 1996-11-12 Stuhl, welcher an die Körperform des Benutzers anpassbar ist

Country Status (3)

Country Link
EP (1) EP0774222B1 (de)
DE (1) DE69620345T2 (de)
FR (1) FR2741249B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327404A1 (de) * 2002-01-07 2003-07-16 Lovato s.r.l. Federelement zur Stützung eines Körperteils
CN110179285A (zh) * 2018-02-22 2019-08-30 佛山市南海德天家具有限公司 一种螺杆横推式软硬度调节装置及其座椅、床垫

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH446637A (de) * 1966-01-18 1967-11-15 Mario Dr Med Rizzi Rückenlehne an einem Sitz
EP0240389A1 (de) 1986-03-05 1987-10-07 Eurosit Verstellbarer Stuhl
DE8815292U1 (de) * 1988-12-08 1989-02-02 H. Draeger Gmbh, 6800 Mannheim, De
WO1992006621A1 (en) 1990-10-12 1992-04-30 J.E. Ekornes A/S Arrangement in a recline chair
US5228747A (en) * 1989-12-18 1993-07-20 Greene Kenneth M Seating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH446637A (de) * 1966-01-18 1967-11-15 Mario Dr Med Rizzi Rückenlehne an einem Sitz
EP0240389A1 (de) 1986-03-05 1987-10-07 Eurosit Verstellbarer Stuhl
DE8815292U1 (de) * 1988-12-08 1989-02-02 H. Draeger Gmbh, 6800 Mannheim, De
US5228747A (en) * 1989-12-18 1993-07-20 Greene Kenneth M Seating system
WO1992006621A1 (en) 1990-10-12 1992-04-30 J.E. Ekornes A/S Arrangement in a recline chair

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327404A1 (de) * 2002-01-07 2003-07-16 Lovato s.r.l. Federelement zur Stützung eines Körperteils
CN110179285A (zh) * 2018-02-22 2019-08-30 佛山市南海德天家具有限公司 一种螺杆横推式软硬度调节装置及其座椅、床垫

Also Published As

Publication number Publication date
DE69620345T2 (de) 2009-09-17
DE69620345D1 (de) 2002-05-08
FR2741249B1 (fr) 1998-01-23
FR2741249A1 (fr) 1997-05-23
EP0774222B1 (de) 2002-04-03

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