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WO2010109080A2 - Rotomolded ergonomic furniture - Google Patents

Rotomolded ergonomic furniture Download PDF

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Publication number
WO2010109080A2
WO2010109080A2 PCT/FR2009/000311 FR2009000311W WO2010109080A2 WO 2010109080 A2 WO2010109080 A2 WO 2010109080A2 FR 2009000311 W FR2009000311 W FR 2009000311W WO 2010109080 A2 WO2010109080 A2 WO 2010109080A2
Authority
WO
WIPO (PCT)
Prior art keywords
manufacturing
plastic
piece
furniture
plastic furniture
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.)
Ceased
Application number
PCT/FR2009/000311
Other languages
French (fr)
Other versions
WO2010109080A3 (en
Inventor
Lionel Scharly
Olivier Perrier
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.)
SCHARLY DESIGNER STUDIO Sas
Raigi SAS
Original Assignee
SCHARLY DESIGNER STUDIO Sas
Raigi SAS
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 SCHARLY DESIGNER STUDIO Sas, Raigi SAS filed Critical SCHARLY DESIGNER STUDIO Sas
Priority to PCT/FR2009/000311 priority Critical patent/WO2010109080A2/en
Publication of WO2010109080A2 publication Critical patent/WO2010109080A2/en
Anticipated expiration legal-status Critical
Publication of WO2010109080A3 publication Critical patent/WO2010109080A3/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/38—Moulds, cores or other substrates
    • B29C41/40—Cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/18—Filling preformed cavities
    • B29C44/181—Filling unsupported soft shells having a particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/44—Furniture or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/44—Furniture or parts thereof
    • B29L2031/443—Chairs

Definitions

  • the present invention relates to the field of furniture, in particular seats, chairs and sofas made entirely or partly of plastic. State of the art
  • the object of the invention is to propose a method of manufacturing furniture that both reduces the ecological balance and improves the comfort of the user by manufacturing furniture having both physical properties of elasticity and hardness sufficient for everyday use.
  • the furniture is made of a plastic material obtained by polymerization. Ideally this material is viscoelastic for the comfort of the user.
  • the family of polyurethanes is well suited to this type of furniture, in particular polyurethane foams which have both properties of strength and flexibility. Of preferentially this type of viscoelastic mouse polyurethane will be used.
  • the main stage of manufacture consists of molding the foam according to the desired shape.
  • This molding can be done by injection, thermoforming and roto molding from a foam in a liquid state.
  • the mold Prior to actual molding, the mold is provided with piercing means, or projecting portions, of the workpiece that will leave openings within the workpiece. These openings will be called vents in the rest of the text.
  • These vents have any geometric shape, preferably circular and are at least two in number.
  • a vent has a depth of at least 5mm and a perimeter of at least 1mm. In all cases a vent has a length less than the length of the piece and does not cross the part from side to side.
  • the size of the vents different according to the desired memory effect, makes it possible to adjust the quality of comfort of the room by using the dimension of this vent.
  • This vent may be constituted by a piece of a different material from that used for the viscoelastic foam.
  • an opening and closing element can be added thereafter on the vents. This element modulates the air inlet and any other material that could be injected into the vent.
  • a vent may be generated by the addition of a degassing bellows on the mold.
  • This degassing bellows may be fixed integrally to the mold or be detachable from said mold to be inserted partially or completely in the foam part.
  • This degassing bellows is preferably made of metal. Its length is between 5mm and 500mm. It has, in a preferred embodiment, cells along its body.
  • This foam can also be cut from a solid block, which lengthens the production and requires the drilling of the vents a posteriori. The addition of the degassing bellows is therefore made more difficult.
  • a skin is added to the viscoelastic foam.
  • This skin is preferably made of flexible plastic, polyurethane type, although any other material can be used.
  • the skin is formed by rotational molding, thermoforming or injection. In all cases the skin already has the shape of the piece. It is then assembled with the foam according to known assembly methods.
  • a third method of manufacture, particularly well suited to rotational molding consists of combining the two methods used as follows:
  • the polyurethane-type flexible skin is rotomolded first and adapts to the appropriate drilling means allowing the creation of the vents.
  • a degassing bellows is added to the skin
  • the skin is swollen and placed in a shaper
  • a viscoelastic foam is added in non-solid form directly into the skin and is rotomolded.
  • the skin plays the role of mold, with a choice of temperature does not allow to detach the foam from the skin later.
  • This process allows the manufacture of a single piece without the addition of glue or resin and yet very resistant.
  • Figure 1 shows a chair back view in front of cross section.
  • the viscoelastic foam (4) allowing the memory effect and the ergonomic comfort of the room, was rotomoulded in the polyurethane skin (2), which served as a mold.
  • An addition of aluminum shaper was necessary during the molding of the part.
  • This polyurethane skin (2) has a thickness of 5mm which allows it to respond to the memory effect of viscoelastic foam (4). Beyond 8mm, the skin is too rigid and loses its elasticity.
  • an aluminum support insert (1) has been added to the vent (8) created by the rotational molding method described above.
  • This insert (1) has openings (7) to allow the passage of air viscoelastic foam (1). This insert leaves the room to allow fixing and indexing with the low part of seat.
  • An air extraction tube (3) has been also added in the central part of the file.
  • the support insert improves the comfort of the seat.
  • the insert has at its lower end an assembly endpiece (5) which is fixed on the lower part of the chair.
  • This hollow tube (3) which plays the role of degassing bellows, is inserted on the mold during rotational molding, to extract air from the backrest when pressure is exerted on it.
  • Figure 2 shows a bottom view, in section, of the same chair back.
  • the degassing openings (6) constitute the lower end of the air extraction tubes (3) and allow the good evacuation of air in the backrest and the adjustment of the effects of remanence of the viscoelastic foam (4). These openings participate in the memory effect of the room and must be at least two in number.
  • FIG 3 shows an isometric view of the seat of the chair.
  • This seat comprises an opening (9) for positioning the insert (1) and fastening assemblies. It is to the tightness of the pieces that a perfect uniformity is obtained.
  • a narrowing before (11) to 3 cm keeps the aesthetics of the chair. This forward narrowing (11) is achieved by melting temperatures above 200 degrees Celsius.
  • FIG. 4 shows a bottom view of the seat of the chair.
  • the opening (9) is also present in the fixing plate (10) which allows the recovery of force of the pairs exerted during seating.
  • This piece is placed on the rotomolded seat in which threads were added at the time of rotational molding.
  • This mounting plate (10) comprises internal reinforcing caps (8). These capsules (8) make it possible to obtain a greater rigidity to the piece during the sitting of a person and also take up the torque forces exerted on the fixing plate (10).
  • Fasteners (12) provide the possibility of adding legs or fixing the chair to the ground to improve stability or fix outdoor furniture in Urban Furniture.
  • Figure 5 shows a cross-sectional view of the seat of the chair.
  • the reinforcing capsules (8) are integrated into the seat.
  • Figure 6 shows an isometric view of the plate (10). It comprises fixing means (13) to the seat of the chair. An attachment end (14) allows assembly with the backrest, by means of the assembly end (5) who comes to be indexed on it. An additional fastener (15) is provided to prevent rotation of the workpiece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method for manufacturing contemporary furniture that develops innovations in plastics engineering, improving comfort and environmentally-friendly features and combines the principles of ecodesign to reduce the number of elements in said furniture by rotomolding complex parts.

Description

Mobilier ergonomique rotomoulé Rotomolded ergonomic furniture

La présente invention concerne le domaine du mobilier, en particulier les sièges, fauteuils et canapés constitués tout ou en partie de matière plastique. Etat de l'artThe present invention relates to the field of furniture, in particular seats, chairs and sofas made entirely or partly of plastic. State of the art

II existe de nombreux modèles de mobiliers utilisant un ou plusieurs matériaux plastiques, en un ou plusieurs éléments. Les modèles ne comportant qu'un seul élément sont moulés selon l'un des procédés de moulages bien connus (injection, roto-moulage, thermoformage). Ils ont comme principal inconvénient de procurer un faible confort du fait des caractéristiques physiques de résistance et de dureté du plastique qui a comme contrainte de devoir supporter le poids d'au moins un adulte. Il est bien connu que l'adjonction d'un élément souple, par exemple un coussin, sur le dossier ou l'assise permet d'améliorer grandement le confort de l'utilisateur. Néanmoins cet élément doit être fabriqué à part et possède ses propres caractéristiques de résistance. Il vieillit différemment de l'ensemble auquel il est attaché ou sur lequel il est posé ce qui nuit à l'aspect général du mobilier. De plus il doit être fabriqué à part, ce qui augment les coûts de transports ainsi que le bilan écologique global de fabrication.There are many models of furniture using one or more plastic materials, in one or more elements. The models comprising only one element are molded according to one of the well-known molding processes (injection molding, rotational molding, thermoforming). Their main disadvantage is to provide a low comfort due to the physical characteristics of strength and hardness of the plastic which has the constraint of having to support the weight of at least one adult. It is well known that the addition of a flexible element, for example a cushion, on the backrest or seat greatly improves the comfort of the user. Nevertheless, this element must be manufactured separately and has its own characteristics of resistance. It ages differently from the set to which it is attached or on which it is placed which affects the general appearance of the furniture. In addition it must be manufactured separately, which increases the transport costs and the global ecological balance of manufacture.

L'objet de l'invention est de proposer une méthode de fabrication de mobiliers permettant à la fois de réduire le bilan écologique et d'améliorer le confort de l'utilisateur en fabriquant du mobilier possédant à la fois des propriétés physiques d'élasticité et de dureté suffisantes pour une utilisation quotidienne.The object of the invention is to propose a method of manufacturing furniture that both reduces the ecological balance and improves the comfort of the user by manufacturing furniture having both physical properties of elasticity and hardness sufficient for everyday use.

Description de la fabrication :Description of manufacture:

Dans un premier mode de fabrication, le mobilier est constitué d'une matière plastique obtenue par polymérisation. Idéalement cette matière est visco- élastique pour le confort de l'utilisateur. La famille des polyuréthanes est bien adaptée à ce type de mobiliers, en particulier les mousses polyuréthane qui possèdent à la fois des propriétés de résistance et de souplesse. De manière préférentielle ce type de mouse polyuréthane viscoélastique sera utilisé.In a first mode of manufacture, the furniture is made of a plastic material obtained by polymerization. Ideally this material is viscoelastic for the comfort of the user. The family of polyurethanes is well suited to this type of furniture, in particular polyurethane foams which have both properties of strength and flexibility. Of preferentially this type of viscoelastic mouse polyurethane will be used.

L'étape principale de fabrication consiste en le moulage de la mousse selon la forme désirée. Ce moulage peut se faire par injection, thermoformage et roto moulage à partir d'une mousse en état liquide. Préalablement au moulage proprement dit, le moule est équipé de moyens de perçage, ou des parties saillantes, de la pièce qui vont laisser des ouvertures à l'intérieur de pièce. Ces ouvertures seront appelées évents dans la suite du texte. Ces évents ont une forme géométrique quelconque, de préférence circulaire et sont au moins au nombre de deux. Un évent a une profondeur au moins égale à 5mm et un périmètre au moins égale à 1mm. Dans tous les cas un évent a une longueur inférieure à la longueur de la pièce et ne traverse pas la pièce de part en part. La dimension des évents, différente selon l'effet mémoire désiré, permet d'ajuster la qualité de confort de la pièce à l'aide de la dimension de cet évent. Cet évent peut être constitué par une pièce d'un matériau différent de celui utilisé pour la mousse viscoélastique.The main stage of manufacture consists of molding the foam according to the desired shape. This molding can be done by injection, thermoforming and roto molding from a foam in a liquid state. Prior to actual molding, the mold is provided with piercing means, or projecting portions, of the workpiece that will leave openings within the workpiece. These openings will be called vents in the rest of the text. These vents have any geometric shape, preferably circular and are at least two in number. A vent has a depth of at least 5mm and a perimeter of at least 1mm. In all cases a vent has a length less than the length of the piece and does not cross the part from side to side. The size of the vents, different according to the desired memory effect, makes it possible to adjust the quality of comfort of the room by using the dimension of this vent. This vent may be constituted by a piece of a different material from that used for the viscoelastic foam.

De manière non obligatoire, un élément d'ouverture et de fermeture peut être ajouté ensuite sur les évents. Cet élément permet de moduler l'entrée d'air et de tout autre matière qui pourrait être injectée dans l'évent.Not required, an opening and closing element can be added thereafter on the vents. This element modulates the air inlet and any other material that could be injected into the vent.

Dans une amélioration du procédé, un évent peut être engendré par l'adjonction d'un soufflet de dégazage sur le moule. Ce soufflet de dégazage peut être fixé solidairement au moule ou être détachable dudit moule pour être inséré partiellement ou complètement dans la pièce en mousse. Ce soufflet de dégazage est préférentiellement en métal. Sa longueur est comprise entre 5mm et 500mm. Il possède, dans un mode de réalisation préféré, des alvéoles le long de son corps.In an improvement of the process, a vent may be generated by the addition of a degassing bellows on the mold. This degassing bellows may be fixed integrally to the mold or be detachable from said mold to be inserted partially or completely in the foam part. This degassing bellows is preferably made of metal. Its length is between 5mm and 500mm. It has, in a preferred embodiment, cells along its body.

Cette mousse peut également être découpée à partir d'un bloc solide, ce qui rallonge la fabrication et demande le percement des évents a posteriori. L'ajout du soufflet de dégazage est dès lors rendu plus difficile. Dans un deuxième mode de fabrication, une peau est ajoutée à la mousse viscoélastique. Cette peau est préférentiellement en matière plastique souple, de type polyuréthane, bien que tout autre matériau puisse être utilisé. Dans une première étape la peau est formée par rotomoulage, thermoformage ou injection. Dans tous les cas la peau possède déjà la forme de la pièce. Elle est ensuite assemblée avec la mousse selon les méthodes d'assemblage connues.This foam can also be cut from a solid block, which lengthens the production and requires the drilling of the vents a posteriori. The addition of the degassing bellows is therefore made more difficult. In a second method of manufacture, a skin is added to the viscoelastic foam. This skin is preferably made of flexible plastic, polyurethane type, although any other material can be used. In a first step the skin is formed by rotational molding, thermoforming or injection. In all cases the skin already has the shape of the piece. It is then assembled with the foam according to known assembly methods.

Une troisième mode de fabrication, particulièrement bien adapté au rotomoulage consiste à combiner les deux procédés utilisés de la manière suivante :A third method of manufacture, particularly well suited to rotational molding consists of combining the two methods used as follows:

1. La peau souple de type polyuréthane est rotomoulée en premier et s'adapte sur les moyens de perçage adaptés permettant la création des évents. Préférentiellement on ajoute un soufflet de dégazage sur la peau1. The polyurethane-type flexible skin is rotomolded first and adapts to the appropriate drilling means allowing the creation of the vents. Preferably, a degassing bellows is added to the skin

2. La peau est gonflée et placée dans un conformateur2. The skin is swollen and placed in a shaper

3. Une mousse viscoélastique est ajoutée sous forme non solide directement dans la peau puis est rotomoulée. La peau joue alors le rôle de moule, avec un choix de température ne permettant pas de détacher ultérieurement la mousse de la peau.3. A viscoelastic foam is added in non-solid form directly into the skin and is rotomolded. The skin then plays the role of mold, with a choice of temperature does not allow to detach the foam from the skin later.

Ce procédé permet la fabrication d'une pièce unique sans l'ajout de colle ou de résine et néanmoins très résistante.This process allows the manufacture of a single piece without the addition of glue or resin and yet very resistant.

Un exemple de chaise produite selon ce procédé par rotomoulage permettra de mieux comprendre les avantages dudit procédé.An example of a chair produced by this rotational molding process will better understand the advantages of said method.

La figure 1 représente un dossier de chaise vue en coupe transversale de face. La mousse viscoélastique (4) permettant l'effet mémoire et le grand confort ergonomique de la pièce, a été rotomoulée dans la peau polyuréthane (2), qui a servi de moule. Un ajout de conformateur aluminium a été nécessaire lors du moulage de la pièce. Cette peau polyuréthane (2) a une épaisseur de 5mm qui lui permet de répondre à l'effet mémoire de la mousse viscoélastique (4). Au delà de 8mm, la peau est trop rigide est perd son élasticité. Dans cette configuration, un insert de soutien en aluminium (1) a été ajouté dans l'évent (8) créé selon le procédé de rotomoulage décrit ci-dessus. Cet insert (1) présente des ouvertures (7) pour permettre le passage de l'air de la mousse viscoélastique (1). Cet insert sort de la pièce pour permettre la fixation et indexation avec la pièce basse d'assise. Un tube d'extraction d'air (3) a été également ajouté dans la partie centrale du dossier. L'insert de soutien permet d'améliorer le confort de l'assise. L'insert comporte à son extrémité inférieure un embout d'assemblage (5) qui se fixe sur la partie inférieure de la chaise. Ce tube creux (3) qui joue le rôle de soufflet de dégazage, est inséré sur le moule lors du rotomoulage, pour extraire l'air du dossier lorsque qu'une pression est exercée dessus.Figure 1 shows a chair back view in front of cross section. The viscoelastic foam (4) allowing the memory effect and the ergonomic comfort of the room, was rotomoulded in the polyurethane skin (2), which served as a mold. An addition of aluminum shaper was necessary during the molding of the part. This polyurethane skin (2) has a thickness of 5mm which allows it to respond to the memory effect of viscoelastic foam (4). Beyond 8mm, the skin is too rigid and loses its elasticity. In this configuration, an aluminum support insert (1) has been added to the vent (8) created by the rotational molding method described above. This insert (1) has openings (7) to allow the passage of air viscoelastic foam (1). This insert leaves the room to allow fixing and indexing with the low part of seat. An air extraction tube (3) has been also added in the central part of the file. The support insert improves the comfort of the seat. The insert has at its lower end an assembly endpiece (5) which is fixed on the lower part of the chair. This hollow tube (3) which plays the role of degassing bellows, is inserted on the mold during rotational molding, to extract air from the backrest when pressure is exerted on it.

La figure 2 représente une vue de dessous, en coupe, du même dossier de chaise. Les ouvertures de dégazement (6) constituent l'extrémité inférieure des tubes d'extraction d'air (3) et permettent la bonne évacuation de l'air dans le dossier et le réglage des effets de rémanence de la mousse viscoélastique (4). Ces ouvertures participent à l'effet mémoire de la pièce et doivent être au moins au nombre de deux.Figure 2 shows a bottom view, in section, of the same chair back. The degassing openings (6) constitute the lower end of the air extraction tubes (3) and allow the good evacuation of air in the backrest and the adjustment of the effects of remanence of the viscoelastic foam (4). These openings participate in the memory effect of the room and must be at least two in number.

La figure 3 représente une vue isométrique de l'assise de la chaise. Cette assise comporte une ouverture (9) permettant le positionnement de l'insert (1) et la fixation des assemblages. C'est aux serrages des pièces qu'une parfaite uniformité est obtenue. En avant de l'assise, un rétrécissement avant (11) à 3 cm permet de conserver l'esthétique de la chaise. Ce rétrécissement avant (11) est obtenu grâce à des températures de fusion supérieures à 200 degrés Celsius.Figure 3 shows an isometric view of the seat of the chair. This seat comprises an opening (9) for positioning the insert (1) and fastening assemblies. It is to the tightness of the pieces that a perfect uniformity is obtained. In front of the seat, a narrowing before (11) to 3 cm keeps the aesthetics of the chair. This forward narrowing (11) is achieved by melting temperatures above 200 degrees Celsius.

La figure 4 représente une vue de dessous de l'assise de la chaise. L'ouverture (9) est également présente dans la platine de fixation (10) qui permet la reprise d'effort des couples exercés lors de l'assise. Cette pièce est disposée sur l'assise rotomoulée dans laquelle des filetages ont été ajoutés au moment du rotomoulage. Cette platine de fixation (10) comporte capsules de renfort interne (8). Ces capsules (8) permettent d'obtenir une rigidité plus accrue à la pièce lors de l'assise d'une personne et reprennent aussi les efforts de couple exercé sur la platine de fixation (10). Des fixations (12) donnent la possibilité d'ajouter des piètements ou de fixer la chaise au sol pour améliorer la stabilité ou la fixer en extérieur en Mobilier Urbain.Figure 4 shows a bottom view of the seat of the chair. The opening (9) is also present in the fixing plate (10) which allows the recovery of force of the pairs exerted during seating. This piece is placed on the rotomolded seat in which threads were added at the time of rotational molding. This mounting plate (10) comprises internal reinforcing caps (8). These capsules (8) make it possible to obtain a greater rigidity to the piece during the sitting of a person and also take up the torque forces exerted on the fixing plate (10). Fasteners (12) provide the possibility of adding legs or fixing the chair to the ground to improve stability or fix outdoor furniture in Urban Furniture.

La figure 5 montre une vue de coupe transversale de l'assise de la chaise. Les capsules de renfort (8) sont intégrées dans l'assise.Figure 5 shows a cross-sectional view of the seat of the chair. The reinforcing capsules (8) are integrated into the seat.

La figure 6 représente une vue isométrique de la platine (10). Elle comprend des moyens de fixation (13) à l'assise de la chaise. Un embout de fixation (14) permet l'assemblage avec le dossier, par le biais de l'embout d'assemblage (5) qui vient s'indexer dessus. Un élément de fixation supplémentaire (15) permet d'empêcher la rotation de la pièce. Figure 6 shows an isometric view of the plate (10). It comprises fixing means (13) to the seat of the chair. An attachment end (14) allows assembly with the backrest, by means of the assembly end (5) who comes to be indexed on it. An additional fastener (15) is provided to prevent rotation of the workpiece.

Claims

Revendicationsclaims 1) Procédé de fabrication de pièce de mobilier en matière plastique comportant une étape de préparation d'un moule, une étape de moulage, et une étape de démoulage caractérisé en ce que le moule comporte au moins deux parties saillantes dont la longueur est inférieure à la longueur de la pièce.1) A method of manufacturing plastic furniture part comprising a step of preparing a mold, a molding step, and a demolding step characterized in that the mold comprises at least two protrusions whose length is less than the length of the room. 2) Procédé de fabrication de pièce de mobilier en matière plastique selon la revendication 1 caractérisé en ce que la pièce est fabriquée par rotomoulage.2) A method of manufacturing piece of plastic furniture according to claim 1 characterized in that the piece is manufactured by rotational molding. 3) Procédé de fabrication de pièce de mobilier en matière plastique selon la revendication 1 caractérisé en ce que la pièce est fabriquée par injection3) A method of manufacturing piece of plastic furniture according to claim 1 characterized in that the part is manufactured by injection 4) Procédé de fabrication de pièce de mobilier en matière plastique selon la revendication 1 caractérisé en ce que la pièce est fabriquée par thermoformage.4) A method of manufacturing piece of plastic furniture according to claim 1 characterized in that the piece is manufactured by thermoforming. 5) Procédé de fabrication de pièce de mobilier en matière plastique selon l'une quelconque des revendications 1 à 4 caractérisé en ce qu'au moins une des parties saillantes est fixée solidairement au moule.5) A method of manufacturing plastic furniture part according to any one of claims 1 to 4 characterized in that at least one of the projecting parts is fixed integrally to the mold. 6) Procédé de fabrication de pièce de mobilier en matière plastique selon l'une quelconque des revendications 1 à 4 caractérisé en ce qu'au moins une des parties saillantes est détachable du moule et est incluse dans la pièce de mobilier.6) A method of manufacturing plastic furniture part according to any one of claims 1 to 4 characterized in that at least one of the projecting parts is detachable from the mold and is included in the piece of furniture. 7) Procédé de fabrication de pièce de mobilier en matière plastique selon la revendication 5 ou 6 caractérisé en ce qu'au moins une des parties saillantes est un tube creux.7) A method of manufacturing piece of plastic furniture according to claim 5 or 6 characterized in that at least one of the projecting parts is a hollow tube. 8) Procédé de fabrication de pièce de mobilier en matière plastique selon l'une quelconque des revendications 1 à 7 caractérisée en ce qu'au moins une des parties saillantes est percée d'alvéoles.8) A method of manufacturing plastic furniture part according to any one of claims 1 to 7 characterized in that at least one of the projecting parts is pierced with cells. 9) Procédé de fabrication de pièce de mobilier en matière plastique selon l'une quelconque des revendications 1 à 8 caractérisé en ce que la matière plastique est un mousse polyuréthane viscoélastique9) A method of manufacturing piece of plastic furniture according to any one of claims 1 to 8 characterized in that the plastic material is a viscoelastic polyurethane foam 10) Procédé de fabrication de pièce de mobilier en matière plastique selon l'une quelconque des revendications 1 à 9 caractérisé en ce que le moule est une peau en matière plastique combinée avec un conformateur. 11)Procédé de fabrication de pièce de mobilier en matière plastique selon la revendication 10 caractérisé en ce que la peau en matière plastique a une épaisseur inférieure à 8mm.10) A method of manufacturing plastic furniture part according to any one of claims 1 to 9 characterized in that the mold is a plastic skin combined with a shaper. 11) A method of manufacturing piece of plastic furniture according to claim 10 characterized in that the plastic skin has a thickness less than 8mm. 12) Procédé de fabrication de pièce de mobilier en matière plastique selon la revendication 10 ou 11 caractérisé en ce que l'on fixe la peau en matière plastique à la pièce au moment du moulage.12) A method of manufacturing piece of plastic furniture according to claim 10 or 11 characterized in that the plastic skin is fixed to the workpiece at the time of molding. 13) Pièce de mobilier en matière plastique fabriquée selon l'un quelconque des procédés des revendications 1 à 12 13) Piece of plastic furniture made according to any one of the methods of claims 1 to 12
PCT/FR2009/000311 2009-03-23 2009-03-23 Rotomolded ergonomic furniture Ceased WO2010109080A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FR2009/000311 WO2010109080A2 (en) 2009-03-23 2009-03-23 Rotomolded ergonomic furniture

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Application Number Priority Date Filing Date Title
PCT/FR2009/000311 WO2010109080A2 (en) 2009-03-23 2009-03-23 Rotomolded ergonomic furniture

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WO2010109080A2 true WO2010109080A2 (en) 2010-09-30
WO2010109080A3 WO2010109080A3 (en) 2014-08-14

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2927115C2 (en) * 1979-07-05 1986-04-17 S.I.C.A.M. Societa Italiana Cuscini a Molle, Turin/Turino Process for the production of upholstered seat parts, in particular backrests for motor vehicles
JPS5983632A (en) * 1982-11-04 1984-05-15 Inoue Mtp Co Ltd Preparation of headrest
DE3527540A1 (en) * 1985-08-01 1987-02-12 Grammer Sitzsysteme Gmbh METHOD FOR PRODUCING A UPHOLSTERY ELEMENT AND DEVICE FOR CARRYING OUT THIS METHOD
US4891081A (en) * 1985-12-04 1990-01-02 Tokai Chemical Industries, Ltd. Method for producing a foamed resin molding

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