EP4088620B1 - Procédé de fabrication d'un siège - Google Patents

Procédé de fabrication d'un siège Download PDF

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Publication number
EP4088620B1
EP4088620B1 EP22168294.1A EP22168294A EP4088620B1 EP 4088620 B1 EP4088620 B1 EP 4088620B1 EP 22168294 A EP22168294 A EP 22168294A EP 4088620 B1 EP4088620 B1 EP 4088620B1
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EP
European Patent Office
Prior art keywords
cut
seat
inverted
backrest
out portion
Prior art date
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Application number
EP22168294.1A
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German (de)
English (en)
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EP4088620C0 (fr
EP4088620A1 (fr
Inventor
Andreas Kurbos
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Studiokurbos GmbH
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Studiokurbos GmbH
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Publication of EP4088620A1 publication Critical patent/EP4088620A1/fr
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Publication of EP4088620B1 publication Critical patent/EP4088620B1/fr
Publication of EP4088620C0 publication Critical patent/EP4088620C0/fr
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/04—Stackable chairs; Nesting chairs
    • 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
    • A47C4/02—Dismountable chairs
    • A47C4/03—Non-upholstered chairs, e.g. metal, plastic or wooden chairs

Definitions

  • the present invention relates to a method for producing a piece of seating furniture which consists at least partially of a sheet-like material.
  • the finished seating furniture includes legs, a seat and a backrest.
  • Such seating furniture is known in a wide variety of embodiments and designs from the prior art.
  • Known seating furniture is usually made of wood, metal and/or plastic.
  • a support structure is usually produced first.
  • the seat and/or the backrest are manufactured separately.
  • the seat and/or the backrest are then attached to the support structure.
  • seat or back cushions made of a soft plastic with a covering of plastic, fabric or leather can be arranged on the seat and/or backrest.
  • This type of production is relatively time-consuming and material-consuming.
  • the production of the support structure, the seat and/or the backrest each requires a large number of production steps and different trades.
  • Seating furniture is also known from the prior art, which consists at least partially of a sheet-like material. Examples of this are, for example, various chairs from Thonet, for example S160, S43 and S33, in each of which a seat and a backrest made of bent wood are attached to a metal support structure. In the Thonet 118 chair, a seat and backrest made of bent wood are attached to a wooden support structure. What all these chairs have in common is the relatively complex and expensive manufacturing process. Seating furniture made of sheet material is made, for example FR2707279A1 and BE491612A known.
  • the object of the present invention is to propose a method for producing a piece of seating furniture that allows the piece of seating furniture to be produced as simply, quickly and inexpensively as possible.
  • the proposed manufacturing process is particularly simple and inexpensive. In addition, there is only a very small amount of production waste due to the cutting of material for the seating furniture.
  • a flat, plate-shaped material blank is assumed, which has an essentially rectangular shape.
  • the panel material may be made of wood, plastic (eg, acrylic glass, Corean® , Resopal® ), metal (eg, aluminum), glass, paper, resin, a composite material, adhesive, and/or binders.
  • the material can be brought into its sheet form from various components, for example under heat, moisture and/or pressure.
  • the sheet-like material can be brought into the desired rectangular shape during production or only afterwards.
  • the strength must be chosen so large that the material can withstand the usual stresses in its later function as a leg, seat or backrest of the chair when the chair is intended to be used. Usual stresses can e.g. based on an estimated weight of a user of the seating furniture of 120 kg. It has been shown that--depending on the material used--material thicknesses of the plate-like material in a range of approximately 10 mm - 30 mm can ensure sufficient stability of the finished seating furniture.
  • the plate-like material does not have to be solid, but can have any desired stabilizing structure, for example a honeycomb structure, between thin cover plates or cover foils.
  • the plate-like material can also consist of several different components and/or structures, which are joined together to form a composite plate, for example under heat, moisture and/or pressure.
  • the substantially rectangular plate-shaped material is bent about at least one bending axis in a "U" shape.
  • the plate-shaped material is preferably bent with a radius >0 around the at least one bending axis.
  • the radius is preferably in a range between 1 cm and 75 cm.
  • the plate-like material When bending the plate-like material around only one bending axis with a radius of 50 cm, the plate-like material is brought into a "U" shape with a bent base by about 180°, in which the two legs - at least in sections - are at a distance of are arranged about 100 cm.
  • the bending axes are preferably parallel to one another.
  • the plate-shaped material is bent at each bending axis by about 90° into a "U" shape with a substantially flat base brought.
  • the base has a length of about 50 cm.
  • the two legs are bent in a radius of about 5 cm.
  • the two legs do not necessarily have to run parallel to one another in order to be able to speak of a "U" shape within the meaning of the present invention.
  • deviations of up to 45° from the course of one leg to the course of the other leg can result in a sectional plane viewed transversely to the bending axes.
  • the sheet-like material can also be bent around more than two bending axes, for example to slightly bend one of the legs of the "U" shape again, in order to achieve a special design or a special stability of the seating furniture.
  • the plate-shaped material is bent not only with one radius, but with different radii in sections. Each of the sections would then have its own bending axis. In total, however, the “U” shape of the deformed plate-like material mentioned also results in this case.
  • the sheet-like material Depending on the type of material, very different methods can be used to bend the sheet-like material.
  • the bending of the material preferably takes place under the influence of heat, moisture and/or pressure.
  • at least one bending method is known in the prior art, which bends the material by about 180° (for one bending axis) or by 2 x about 90° (for two bending axes) without damaging or distorting the material allowed.
  • the sheet-like material After the bending process, the sheet-like material remains in the bent shape even under mechanical stress from a user when the seating furniture is used as intended within a temperature window of the ambient temperature of about -20°C to +50°C. When the plate-shaped material is bent, it undergoes plastic deformation.
  • a part is cut out of the deformed sheet material.
  • the excision can be done in any way. Sawing, water jet cutting, plasma cutting, laser cutting, or punching are all considered here.
  • the part cut out forms the seat and backrest of the finished piece of seating furniture.
  • the cut-out part comprises a part of only a leg of the inverted "U” and at least a part of a base of the inverted "U".
  • the cut-out portion of the leg of the inverted "U” preferably forms the backrest of the finished chair, and the cut-out portion of the base of the inverted “U” preferably forms the seat bottom of the finished chair.
  • the cut-out part of the leg of the inverted "U” forms the seat and the cut-out part of the base of the inverted "U” forms the backrest of the finished piece of seating furniture.
  • the sheet material must be bent around one or more bending axes in the previous step.
  • a correspondingly shaped part must be cut out of the bent plate-shaped material in the previous step.
  • the cut out part leaves a receiving opening in the inverted "U” bounded on all sides by uncut out deformed plate material of the inverted "U".
  • the cut-out part is arranged in this receiving opening in a subsequent step and fastened in the desired position. This should be taken into account when choosing the position and course of the cut for the cut-out part.
  • the cut-out part is rotated about an axis of rotation and the rotated cut-out part in the Receiving hole attached to the uncut portion of the inverted "U” so that the cut portion of the base of the inverted "U” forms the seat or backrest and the cut portion of the leg of the inverted “U” forms the backrest or seat of the chair.
  • the rotation can take place, for example, by approximately 180° about an axis of rotation parallel to the at least one bending axis.
  • the part cut out can also be rotated about one or more other axes of rotation.
  • a rotation of about 180° includes a rotation about the axis of rotation in a range of about 150° to 210°, depending on how steep or sloping the backrest or how horizontal or sloping the seat of the finished piece of seating furniture should be.
  • the cut-out portion For attachment of the cut-out portion to the uncut-out portion of the inverted "U", it may be sufficient if the cut-out portion is attached to the uncut-out portion of the inverted "U" at two locations preferably located on opposite sides of the cut-out portion. These points are preferably arranged on the seat surface of the finished piece of seating furniture.
  • the backrest would lean against a corresponding cut edge of the exception opening with its rear side.
  • the backrest could be movably mounted at the cut edge, so that if a suitable material was selected, a spring effect could be realized in the seat surface of the finished piece of seating furniture. The spring effect would result from an elastic deformation of the material.
  • the rotated cut-out part is fixed only in a forward-facing area of the seat bottom to non-cut-out parts of the leg of the inverted "U” located on either side adjacent to the cut-out part. That is preferred
  • the rotated cut-out portion is fixed only at a front edge of the seat bottom to the uncut-out portions of the leg of the inverted "U” located on both sides adjacent to the cut-out portion. This results in the mentioned spring effect of the finished piece of seating furniture.
  • the rotated part that has been cut out is brought into contact with a rear side of the backrest at least in sections against a cut edge of the part of the deformed sheet material that has not been cut out and preferably runs parallel to the at least one bending axis.
  • the cutting edge does not necessarily have to be straight, but can also be curved.
  • the back of the backrest can rest against the cut edge over the entire surface or only at certain points.
  • the back of the backrest preferably slides against the cut edge. In this way, the rear side of the backrest can be moved relative to the cut edge when the finished piece of seating furniture is weight-loaded, for example by a person sitting on it, whereby said spring effect can be realized.
  • the turned, cut-out part is fastened to the back of the backrest, at least in sections, on the cut edge of the part of the deformed plate-shaped material that has not been cut out.
  • the attachment can be detachable or fixed. Accordingly, the cut-out part is fastened on the one hand to two locations preferably arranged on opposite sides of the seat and on the other hand to the backrest of the finished piece of seating furniture on the uncut-out part of the inverted "U".
  • the attachment of the backrest of the finished chair to the uncut portion of the inverted "U" can be done at two locations preferably located on opposite sides of the backrest.
  • the backrest can also be fastened along a support edge formed on the back of the backrest, via which the backrest lies against the corresponding cut edge of the cut-out opening when the part cut out is arranged in the receiving opening.
  • the Fastening can be done along the entire support edge or only along part of the support edge.
  • the attachment of the cut-out part in the receiving opening to the uncut-out part of the inverted "U” can be done in different ways depending on the plate-shaped material used. Welding, soldering, laminating, gluing, screwing, nailing, riveting, etc. would also be conceivable Fastening bolt is introduced.
  • the bolt or bolts can be arranged in the bores so that they can be displaced along their longitudinal axes, so that the fastening can also be released again. It is also conceivable to use other fasteners, such as angle brackets or the like, which are attached to the parts to be fastened together, for fastening the cut-out part in the receiving opening to the uncut-out part of the inverted "U".
  • the guide pins can be guided along the guide rails from the ready position.
  • the part that has been cut out can be rotated about an axis of rotation defined by the guide bolts.
  • the cut-out part can be moved to a rest or storage position in which the cut-out part completely fills the receiving opening (except for the cut edges) and is flush with the part of the inverted "U” that has not been cut out. In this position, the chair can be easily stacked, so that it takes up very little space for storage and transport.
  • the rotated part that has been cut out is only fixed in a forward-facing area, in particular on a front edge, of the seat surface on the uncut parts of the leg of the inverted "U" that are arranged on both sides next to the cut-out part. rotatably mounted.
  • the rotated cut-out part is preferably only in a forward-facing area, in particular at a front edge, of the seat surface on uncut-out parts of the leg of the inverted "U” arranged on both sides next to the cut-out part, longitudinally displaceable along a longitudinal extension of the uncut-out parts of the leg of the inverted "U” and slidably longitudinally along a length of the uncut portions of the base of the inverted "U".
  • the longitudinal displaceability is preferably realized by said guide rails in cooperation with the guide pins.
  • the seating furniture according to the invention can be manufactured particularly easily and quickly.
  • the seating furniture can be used as a dining room chair, as an armchair or lounge chair, as a Children's chair, designed as a bench or the like.
  • An important aspect of the chair is that the portion cut from the inverted "U" of the deformed sheet material forms the seat and back of the finished chair.
  • the distal ends of the Legs of the part of the inverted "U” that is not cut out stand on a base in the finished piece of seating furniture and form the legs of the seating furniture, so to speak.
  • the finished piece of seating furniture produced by the method according to the invention is open to further processing steps.
  • upholstery preferably comprises a foam core with a covering of a suitable material (e.g. leather, fabric (e.g. made of cotton, silk, wool, synthetic fibers), or plastic (e.g. microfiber or Alcantara)) and is preferably glued, nailed or stapled on .
  • a suitable material e.g. leather, fabric (e.g. made of cotton, silk, wool, synthetic fibers), or plastic (e.g. microfiber or Alcantara)
  • T-shaped restraining belt or a restraining rod to the armrests and optionally also in the front area of the seat.
  • one or more wheels or rollers at the distal end of at least one leg of the uncut part of the inverted "U" so that the chair can be moved more easily over the ground.
  • a handle opening may be formed in an upper portion of the seat back or in the distal end of at least one of the legs of the inverted "U".
  • the cut-out part of the leg of the inverted "U” is longer than that Cut-out part of the base of the inverted "U".
  • the backrest is longer than the seat in the finished piece of seating furniture, the length of the backrest is its height and the length of the seat is its depth, even if the transition area between the seat and the backrest does not have an edge but a curvature, ie the plate-like material in this area around a bending edge with a radius > 0 has been bent, the length of the seat bottom and backrest can be measured by extending (or extrapolating) the surface extent of the seat bottom toward the backrest and extending (or extrapolating) the surface extent of the backrest toward the seat bottom. The distance from the cutting edge of the two extrapolated surfaces to the distal end of the seat surface or the backrest corresponds to the
  • a greater length of the backrest has the advantage that the part cut out the other way around can only be attached to the part of the inverted "U" that is not cut out, preferably on opposite sides in the front area of the seat of the finished piece of seating furniture, and the backrest with its Rear can lean against the corresponding cut edge of the exception opening. If the seat is loaded, for example by a person sitting down, the backrest can move up or down along the cut edge depending on the weight of the load, so that when a suitable material is selected, a spring effect can be achieved in the seat of the finished piece of seating furniture . The longer backrest prevents the backrest from slipping under the cut edge of the receiving opening when the seating furniture is loaded.
  • uncut parts of the base of the inverted "U" arranged on both sides next to the cut-out part form armrests of the finished chair.
  • the shape of the armrests can thus also be influenced by the type of bending of the plate-shaped material.
  • the armrests (and thus also the base of the inverted "U") have a horizontal extension parallel to the ground on which the finished seating furniture stands.
  • the invention also relates to a piece of seating furniture made of a plate-shaped material, the seating furniture comprising legs, a seat and a backrest.
  • the seating furniture is manufactured according to the method according to the invention. As a result, an inexpensive, optionally resilient and stackable piece of seating furniture can be realized.
  • the invention relates to a method for producing a piece of seating furniture 10 and a piece of seating furniture 10 that has been produced using the method according to the invention.
  • the procedure is described below using the Figs. 1-4 explained in more detail.
  • the finished chair includes 10 legs 12, a seat 14 and a backrest 16.
  • the chair 10 from 4 is embodied as a dining room chair.
  • other configurations are also conceivable (cf. Figs. 6a, 6b and 6c ).
  • the following statements apply equally to any type of seating furniture.
  • the chair 10 consists at least partially of a plate-shaped material 18 (cf. 1 ).
  • the sheet material 18 may include, for example, wood, plastic, metal (eg, aluminum), paper, resin, glue, and/or binders.
  • the sheet material 18 is preferably solid. However, it would also be conceivable for it to have any desired stabilizing structure, for example a honeycomb structure, between thin cover plates or cover foils.
  • the plate-shaped material 18 can also consist of several different components and/or structures, which are joined together to form a composite panel, for example under heat, moisture and/or pressure.
  • a substantially rectangular plate-shaped material 18 is provided.
  • the rectangular plate-like material can already be obtained from a supplier in the desired rectangular shape, or it can be brought into the desired rectangular shape by a manufacturer of the seating furniture item 10 . This can be done, for example, by cutting or punching.
  • the essentially rectangular plate-shaped material 18 is deformed, in particular bent about at least one bending axis 20, 22.
  • the sheet-like material 18 is bent about two bending axes 20, 22.
  • Several bending axes 20, 22 preferably run parallel to one another.
  • the bending about the bending axes 20, 22 preferably takes place with a radius R>0.
  • the sheet-like material 18 is bent with a first radius R1 around the first bending axis and with a second radius R2 around the second bending axis.
  • the radii Ri assigned to the various bending axes i can be the same or different.
  • the first radius R1 is larger than the second radius R2.
  • the sheet-like material 18 is preferably bent by approximately 180° around a relatively large radius.
  • bending through approximately 180° includes bending the end sections 24, 26 of the sheet-like material 18 relative to one another in a range of approximately 150° to 210° about one bending axis.
  • the sheet-like material 18 is preferably bent by approximately 90° around each bending axis 20, 22 by a smaller radius R1 or R2.
  • the smaller radius R1; R2 is smaller than the large radius with only one bending axis.
  • the radii R1, R2 are preferably in a range of about 10 mm up to 50 cm. Even with two bending axes 20, 22, the end sections 24, 26 of the sheet-like material 18 are bent by a total of approximately 180° relative to one another, which encompasses a range of approximately 150° to 210°.
  • the bent sheet-like material 28 assumes the shape of an inverted "U" (cf. 2 ).
  • the legs 12 do not necessarily have to be perpendicular to a base 30 (cf. the right leg 12, which is formed by the end section 26), but can also run at an angle to it (cf. the left leg 12, which is formed by the end section 24 becomes).
  • the bending of the plate-shaped material 18 can be carried out using conventional methods known per se from the prior art. Depending on the material used for the sheet material 18, the bending can occur under the influence of heat, moisture and/or pressure.
  • a part 32 is then cut out of the bent sheet-like material 28 .
  • the cut-out portion 32 preferably comprises part of only one leg (in the example the leg formed by the end portion 26) of the inverted "U” 28 and at least part of a base (between the end portions 24, 26 and the bending axes 20, 22 respectively) of the inverted "U” 28.
  • the cut out part 32 leaves a receiving opening 34 (cf. 3 ) in the inverted "U" 28.
  • the receiving opening 34 is preferably bounded on all sides by uncut curved sheet material 36 of inverted "U" 28.
  • the part 32 can be cut out in any manner known per se, for example sawing, water jet cutting, plasma cutting, laser cutting or punching.
  • the shape and dimensions of the cut-out portion 32 will depend on the desired shape and dimensions of the seat bottom 14 and/or backrest 16 .
  • the cut is preferably as small as possible so that the cut portion 32 can be easily and inexpensively attached to the remaining uncut portion 36 of the inverted "U" 28 in the receiving opening 34 in a subsequent step.
  • the part 32 that has been cut out is rotated by approximately 180° about an axis of rotation and the rotated part 32 that has been cut out is fixed in the receiving opening 34 to the bent plate-shaped material 36 that has not been cut out (cf. 3 ) attached.
  • the axis of rotation can be arranged anywhere in space. In addition to the rotational movement, a translatory movement of the cut-out part 32 can also take place.
  • the axis of rotation preferably runs parallel to the at least one bending axis 20, 22. However, it would also be conceivable for the axis of rotation to run perpendicular to the at least one bending axis 20, 22.
  • the cut-out portion 32 can be fitted into the receiving opening 34 such that the portion of the cut-out portion 32 corresponding to the base of the inverted "U” 28 is the seat 14 or back 16, and correspondingly that to the thigh of the inverted "U” 28 corresponding part of the cut-out part 32, the backrest 16 and the seat 14 of the chair 10 forms.
  • Securing the rotated cut-out portion 32 within the receiving opening 34 can be accomplished in a variety of possible locations and/or in a variety of different ways.
  • member 32 is secured in a forward facing portion 38, preferably at a front edge 40, of seat bottom 14 to an uncut portion 36 of the inverted "U". Fastening is preferably done with the two opposite ones End sides of the front edge 40 on the lateral parts 36 that are not cut out, preferably on the lateral cutting edges 44, in the area of the leg formed by the end section 26.
  • the cut-out part 32 rests against a rear cut edge 42 of the receiving opening 34 .
  • the back of the backrest 14 can bear against the cut edge 42 over the entire surface or only in sections.
  • the backrest 14 can be movably mounted on the cutting edge 42, so that if a suitable material is selected, a spring effect of the seat surface 14 of the finished piece of seating furniture 10 could be realized when it is mechanically loaded by a person sitting on it.
  • a sliding surface can be configured in certain areas on the back of the backrest 16, for example by applying a PTFE coating.
  • a stop on the back of the backrest 16 can ensure that the seat surface 14 is not pressed down too far under mechanical stress.
  • the backrest 16 is attached to the part 36 that has not been cut out, in particular to the cut edge 42 of the inverted "U".
  • the attachment can take place over the entire surface or only in sections on the cut edge 42 .
  • the attachment can also be attached to the backrest 36, preferably with the lateral cut edges 46 of the cut-out part 32 in the area of the backrest 16, on the lateral, non-cut-out parts 36, preferably on the lateral cut edges 44, in the vicinity of the rear cut edge 42 become. Fastening the backrest 16 to the part 36 that has not been cut out can result in improved stability of the finished piece of seating furniture 10 under mechanical stress.
  • the attachment of the cut-out portion 32 in the receiving opening 34 to the uncut-out portion 36 of the inverted "U" 28 can be accomplished in a variety of ways depending on the material used. For example, welding, soldering, laminating, gluing, screwing, nailing, riveting, etc. would be conceivable Use of suitable fasteners, such as bolts, brackets, etc. would be conceivable.
  • a guide pin 50 is arranged on each side of the seat surface 14 in the front region 38, preferably at the front edge 40, of the seat surface 14 and protrudes beyond the lateral cutting edges 46 of the cut-out part 32 and into the associated guide rail 48.
  • the guide rails 48 each have a stop 52 against which the guide bolts 50 rest when the finished piece of seating furniture 10 is in a ready-to-use position (cf. 4 ) is located.
  • the guide rails 48 preferably extend respectively in the lateral cutting edges 44 of the uncut material 36 of the inverted "U” 28 starting from the stop 52 in the region of the leg formed by the end section 26, along the entire base (between the end sections 24, 26) of the inverted "U" up to the rear cutting edge 42.
  • the seat backrest 14 By attaching the seat backrest 14 by means of the guide rails 48 and the guide bolts 50 and by attaching the backrest 16 in an unforeseen or detachable manner, it is possible to move the seating furniture item 10 from a ready-to-use position (cf. Figure 5b ) into a resting or storage position (cf. Figure 5a ) to bring, in which the seating 10 are stackable.
  • the guide pins 50 provide an axis of rotation about which the cut-out portion 32 can be rotated approximately 180° to move the chair 10 between the ready-to-use position and the rest or storage position.
  • Uncut portions 36 of the base (between the end portions 24, 26) of the inverted "U" armrests 28 disposed to either side of the cut away portion 32 may form armrests of the finished seating furniture item 10.
  • further parts 54 are cut out of the cut-out part 32 and/or from the uncut-out part 36 of the bent plate-shaped material 28 in order to create a handle opening 54a in an upward-facing area of the backrest 16 ( see. Figs. 4 and 6b ), at least one drainage opening 54b in a transition area between the seat surface 14 and the backrest 16 (cf. Figure 6c ), vent openings in the seat bottom 14 and/or discrete legs 12 of the seating furniture 10. It would also be conceivable, to facilitate transport of the finished piece of seating furniture 10, to one of the end sections, e.g.
  • a restraint belt 56 may also be attached to a forward-facing portion of the side uncut portions (or armrests) 36 and/or to the front portion 38 of the seat bottom 14.

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  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (14)

  1. Procédé de fabrication d'un siège (10) constitué au moins partiellement d'un matériau en forme de plaque (18), le siège fini (10) comprenant des pieds (12), une assise (14) et un dossier (16), caractérisé par les étapes suivantes :
    - fournir un matériau en forme de plaque sensiblement rectangulaire (18),
    - Déformation du matériau en forme de plaque sensiblement rectangulaire (18) pour qu'il prenne la forme d'un "U" inversé (28) après déformation,
    - Découpage d'une partie (32) du "U" renversé (28), la partie découpée (32) laissant une ouverture de réception (34) dans le "U" renversé (28), délimitée de tous les côtés par du matériau en forme de plaque déformé non découpé (36), et
    - tourner la partie découpée (32) et fixer la partie découpée tournée (32) dans l'ouverture de réception (34), de sorte que la partie découpée (32) fixée dans l'ouverture de réception (34) forme l'assise (14) et le dossier (16) du siège fini (10), les branches du "U" retourné (28) formant les pieds du siège (10).
  2. Procédé de fabrication d'un siège (10) selon la revendication 1, dans lequel
    la mise en forme du matériau en forme de plaque sensiblement rectangulaire (18) comprend un pliage du matériau en forme de plaque sensiblement rectangulaire (18) autour d'au moins un axe de pliage (20 ; 22).
  3. Procédé de fabrication d'un siège (10) selon la revendication 1 ou 2, dans lequel la partie découpée (32) comprend une partie d'une seule branche du "U" retourné (28) et au moins une partie d'une base du "U" retourné (28).
  4. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    le matériau en forme de plaque (18) sensiblement rectangulaire est plié autour de deux axes de pliage (20, 22) parallèles entre eux pour former la forme du "U" renversé (28).
  5. Procédé de fabrication d'un siège (10) selon la revendication 3, dans lequel la partie de la partie découpée (32) correspondant à la branche du "U" retourné (28) est plus longue que la partie de la partie découpée (32) correspondant à la base du "U" retourné (28).
  6. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    des parties non découpées (36) de la base du "U" retourné (28), disposées de part et d'autre de la partie découpée (32), forment des accoudoirs du siège fini (10).
  7. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    la partie découpée tournée (32) est fixée uniquement dans une zone (38) de l'assise (14) orientée vers l'avant, notamment sur un bord avant (40) de l'assise (14), à des parties non découpées (36) de la branche du "U" retourné (28) disposées de part et d'autre de l'ouverture de réception (34).
  8. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    la partie découpée tournée (32) est amenée en appui par une face arrière du dossier (16), au moins par tronçons, contre une arête de coupe (42) de la partie non découpée (36) du "U" retourné (28), l'arête de coupe (42) étant de préférence parallèle à au moins un axe de pliage (20 ; 22) autour duquel le matériau en forme de plaque (18) sensiblement rectangulaire est plié.
  9. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    la partie découpée tournée (32) est fixée par la face arrière du dossier (16), au moins par tronçons, à la partie non découpée (36) du "U" retourné (28), de préférence à une arête de coupe (42) de la partie non découpée (36) du "U" retourné (28).
  10. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    la partie découpée tournée (32) est fixée en rotation uniquement dans une zone (38) orientée vers l'avant, notamment sur un bord avant (40), de l'assise (14), sur des parties non découpées (36) de la branche du "U" retourné (28) disposées de part et d'autre de l'ouverture de réception (34).
  11. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    la partie découpée tournée (32) est fixée uniquement dans une zone (38) orientée vers l'avant, en particulier sur un bord avant (40), de l'assise (14) à des parties non découpées (36) de la branche du "U" retourné (28) disposées de part et d'autre de l'ouverture de réception (34), de manière à pouvoir coulisser longitudinalement le long d'une extension longitudinale des parties non découpées (36) de la branche et de la base du "U" retourné (28).
  12. Procédé de fabrication d'un siège (10) selon l'une quelconque des revendications précédentes, dans lequel
    des rails de guidage (48) sont disposés sur deux arêtes de coupe latérales (44) opposées, orientées vers l'ouverture de réception (34), des parties non découpées (36) du "U" retourné (28),
    dans une zone (38) dirigée vers l'avant, en particulier sur un bord avant (40), de l'assise (14), des boulons de guidage (50) faisant saillie latéralement sont disposés en face des arêtes de coupe latérales (44), et
    les boulons de guidage (50) sont insérés dans les rails de guidage (48).
  13. Procédé de fabrication d'un siège (10) selon l'une des revendications précédentes, dans lequel
    en plus de la partie découpée (32), d'autres parties sont découpées dans la partie découpée (32) et/ou dans la partie non découpée (36) du matériau en forme de plaque déformée (28) pour former une ouverture de préhension (54a ; 54c), au moins une ouverture de drainage (54b) dans une zone de transition entre l'assise (14) et le dossier (16), des ouvertures de ventilation dans l'assise (14) ou le dossier (16) et/ou des pieds discrets (12) du siège (10).
  14. Siège (10) en matériau en forme de plaque, le siège (10) comprenant des pieds (12), une assise (14) et un dossier (16),
    caractérisé en ce que
    le siège (10) est fabriqué selon l'une quelconque des revendications précédentes.
EP22168294.1A 2021-05-12 2022-04-14 Procédé de fabrication d'un siège Active EP4088620B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021112384.4A DE102021112384A1 (de) 2021-05-12 2021-05-12 Verfahren zum Herstellen eines Sitzmöbels

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EP4088620A1 EP4088620A1 (fr) 2022-11-16
EP4088620B1 true EP4088620B1 (fr) 2023-09-06
EP4088620C0 EP4088620C0 (fr) 2023-09-06

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EP (1) EP4088620B1 (fr)
DE (1) DE102021112384A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB476315A (en) 1935-08-28 1937-12-06 Karl Michaelis Improvements in chairs and like furniture
US2670787A (en) 1948-07-13 1954-03-02 Edward B Vandas Chair of malleable material
BE491612A (fr) * 1948-11-15 1949-10-31
US4390204A (en) 1978-01-04 1983-06-28 Gregg Fleishman Portable furniture
CN85201277U (zh) * 1985-04-20 1986-04-09 徐庭中 整形椅
US5040847A (en) 1989-11-02 1991-08-20 Nguyen Chuong Q B Chair and method for constructing a chair
US5154485A (en) 1990-05-11 1992-10-13 Fleishman Gregg R Spring plate furniture
FR2707279B1 (fr) * 1993-07-08 1995-09-08 Dubled Bernard Objet en matériau déformable, en particulier meuble, ou analogue, et procédé de fabrication.
DE102005032850A1 (de) 2005-07-14 2007-01-18 Maurice Berg Herstellungsverfahren für ein Stuhlelement sowie Stuhlelement
US20140091608A1 (en) 2012-09-28 2014-04-03 Barbara Schoenenberger One piece chair with integral arm rest
CN107752516A (zh) * 2016-08-17 2018-03-06 周如彬 钣金制成的一体式座椅

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Publication number Publication date
EP4088620C0 (fr) 2023-09-06
EP4088620A1 (fr) 2022-11-16
DE102021112384A1 (de) 2022-11-17

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