WO2011021952A1 - Structure of a seat for vehicles - Google Patents

Structure of a seat for vehicles Download PDF

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Publication number
WO2011021952A1
WO2011021952A1 PCT/PT2009/000045 PT2009000045W WO2011021952A1 WO 2011021952 A1 WO2011021952 A1 WO 2011021952A1 PT 2009000045 W PT2009000045 W PT 2009000045W WO 2011021952 A1 WO2011021952 A1 WO 2011021952A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle seat
seat structure
structure according
seat
composite material
Prior art date
Application number
PCT/PT2009/000045
Other languages
French (fr)
Portuguese (pt)
Inventor
José António TEIXEIRA COELHO
José Paulo FERREIRA DOS SANTOS OLIVEIRA
Hernani José CLEMENTE MATOS
Pedro Miguel Eisgueira Oliveira
António José VIEIRA CORREIA GOMES DE OLIVEIRA
Original Assignee
ACECIA, Componentes Integrados para a Indústria Autómovel, ACE
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 ACECIA, Componentes Integrados para a Indústria Autómovel, ACE filed Critical ACECIA, Componentes Integrados para a Indústria Autómovel, ACE
Priority to PCT/PT2009/000045 priority Critical patent/WO2011021952A1/en
Publication of WO2011021952A1 publication Critical patent/WO2011021952A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68Seat frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80Head-rests
    • B60N2/806Head-rests movable or adjustable
    • B60N2/809Head-rests movable or adjustable vertically slidable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80Head-rests
    • B60N2/897Head-rests with sleeves located in the back-rest for guiding the rods of the head-rest

Definitions

  • the present invention relates to a seat structure for motor vehicles, preferably for motor vehicles. More specifically, an internal structure is presented comprising three independent parts that constitute single parts, one that forms the backrest, another that constitutes a seat itself, and yet another that forms the head / neck support, each one of which said parts obtained by means of a single injection molding of composite material with rib-formed structural reinforcements, which parts accommodating composite materials and comfort foam coated with fabric and / or skin, and which bond together form a seat of symmetrical morphology.
  • US 2008/0129097 relates to a molded seat which is formed from plastics material and which has increased strength and fastening mechanisms.
  • the seat includes a back and a seat itself, both made of a plastic material.
  • the universal seat also includes an articulated recliner that is simultaneously connected to the back and the seat itself.
  • an airplane seat includes a seat assembly itself and a seat back assembly.
  • the seat assembly itself includes multiple rigid metal members of the side frame, an energy absorbing element for deforming and absorbing applied energy.
  • the seat back assembly is attached to the seat assembly itself and also includes multiple rigid metal elements of the back side frame which absorb the energy generated in the event of a frontal impact and permanently deform during a severe frontal impact.
  • WO 2006081865 relates to a lumbar support capable of being integrated into the seat frame, in particular the seat of a motor vehicle, wherein said lumbar support comprises a correspondingly folded guide rod over the seat.
  • said lumbar support comprises a correspondingly folded guide rod over the seat.
  • Anchor rods for securing a seat cover or seat cushion and a transverse rod for automatically driving a headrest can also be mounted by injection molded elements. All components of plastics material may be produced by means of an appropriate injection molding mold in a single injection molding operation.
  • WO 2008019981 relates to a composite component, such as the back of a vehicle seat, which comprises a support portion and at least one reinforcing composite layer.
  • the support portion comprises a thermoplastic material and the composite reinforcement layer comprises a polymeric material that impregnates a plurality of fibers.
  • the polymeric material of the reinforcing composite layer is integrated with the thermoplastic material of the support portion.
  • a proper method for forming the composite component includes the following steps: placing the composite layer within a mold; heat the thermoplastic material until it is in a molten state; and causing the molten thermoplastic material to be brought into contact with the composite layer.
  • motor vehicle seats particularly motor vehicles that use composite materials
  • the present invention goes beyond these concerns. Its main objectives are the design of a complete vehicle seat structure comprising three parts that make up the backrest, the seat itself, yet another that forms the head / neck headrest. Each of these parts is obtained through a single injection mold of thermoplastic composite material.
  • Each of these pieces is designed to be injected into composite material in a single mold and is provided with rib-formed structural reinforcements. This provides a complete seat structure with optimum weight / stiffness ratio.
  • the backrest forming a single symmetrical modular piece, comprises a U-shaped frame from which the lumbar and dorsal supports are projected and hollow spaces are formed to house side airbags and two guiding supports of the lumbar and dorsal supports.
  • the seat itself is formed of a base with a space to accommodate the composite material component and the comfort foams for the user's sciatic zones. Said base also includes space for the application of metallic side reinforcements.
  • the cushion-shaped head / neck headrest has a longitudinal hole and a side clip system for attaching thermoplastic components that top off the headboard after the comfort foam and fabric and / or skin are fitted.
  • this structure allows to drastically reduce the number of components used in the manufacture of said structure and derived from the fact that a thermoplastic is used to simplify the method of manufacture, its assembly.
  • Still another object of the invention is the environmental advantages that derive from the fact that the material used in the structure design is recyclable.
  • Figures 1a and b show exploded perspective view of the front and rear of the seat with the seat and backrest components
  • FIG. 2 and b show a view in perspective behind and front of the backrest frame
  • FIGS. 2 is a perspective view of the structure of FIGS. 2 with the guide piece;
  • Figures 5a and b show perspective views of the seat respectively from above and below;
  • Figure 6 shows a perspective view of the seat, backrest and the connection between both parts
  • FIG. 7a, b and c show perspective views respectively from behind, side and front of the headboard;
  • Figures 8a, b and c show a detailed view of the headboard and its connection to the backrest.
  • the seat structure for motor vehicles comprises essentially three independent parts that form one piece, one that forms the backrest 1, another that forms a seat itself 10, and yet another.
  • a. head support for the head / neck 17 shown in Figures IA and 7) and each of said parts obtained through a single injection molding of composite material with structural ribs formed by ribs 7, 12 and 19, These parts which accommodate composite materials and comfort foam coated with fabric and / or skin, and which bond together form a seat of symmetrical morphology.
  • Said backrest 1 is formed by a U-shaped rim 2 from which the lumbar 4 and dorsal supports 3 are projected and hollow spaces 5 are formed to house laceral air bags and two supports 6 for guiding the connection system of the headboard 17, forming a single symmetrical modular piece.
  • Said ring 2 closed at the lower end, is provided with reinforcing structural ribs 7 which are distributed along its entire perimeter.
  • Said ribs may have different configurations which are nevertheless projected after iterative processes that optimize their configuration, arrangement and thickness.
  • the combination of the structure with the U-shaped rim 2 and the reinforcing structural ribs 7 is aimed at optimizing the weight / stiffness ratio.
  • the lumbar supports 4 and dorsal 3 which are injected in the same mold of the rim 2, consist of a set of elements fixed respectively in the upper part and the lower element 8 that closes the rim 1.
  • the number of elements is predefined accordingly. with the desired comfort conditions.
  • These elements essentially comprise horizontally disposed rulers which are properly joined by other vertical rulers.
  • these supports are attached to a frame-independent part 9, with the configuration of a "U" where the web is fixed to the top of the backrest 3 and the tabs extend to the lower end of the lumbar support 4.
  • This 9 piece has guiding functions. and supports the stresses to which the supports are subjected when actuated by the user.
  • These same guides will allow those supports to assume all position variants without moving from the field of action.
  • said guide is metallic. It may however also be obtained from suitable composite material.
  • the hollow spaces 5 disposed laterally for housing air bags and their actuating devices may be configured to suit the sizes of air bags and devices.
  • This backrest structure 1 further comprises the possibility of comprising a guide system for the headrest or headrest 17, which system consists of the supports 6 also provided in the same mold.
  • the seat 10 Attached to the backrest 1 is the seat itself 10.
  • the structure of this one-piece composite material thermoplastic material must withstand the efforts of the backrest tilting system, sliding system and rail fastening system.
  • the seat 10 consists of a base 11 in which lower ribs 12 are provided with reinforcing ribs. seat rigidity.
  • the upper part of the base 11 comprises a space 13 which is intended to receive a component formed of a density composite material which allows the thickness reduction of the comfort foam to be applied ensuring comfort to the passenger during its use.
  • This composite material may, for example, be gel-based cork.
  • the base 11 is provided with spaces 14 for accommodating independent metallic reinforcements 15 which guarantee the necessary structural rigidity and established by type approval standards, for example for motor vehicles.
  • connection of the seat 10 to the backrest 1 is effected by a system of a generally known set of parts, represented in the figures by reference 16.
  • the external reinforcements are intended to support the tilting system (translational movement of the seat).
  • Headboard 17 is basically comprised of a structure obtained from a single mold and has an end-to-end longitudinal hole 18 that will allow the headboard to be visibly lighter.
  • the design of this headboard also allows for various applications such as incorporation of audio / video systems and air bags.
  • the headrest is provided with reinforcing ribs 19 disposed at its bottom to optimize the headrest in terms of its weight / stiffness ratio.
  • These reinforcements 19 will be able to receive the socket pins 21 from the headrest 17 to the backrest 1.
  • Said pins 21 are fixed to the structure by suitable fastening systems such as screws, rivets, dowels, etc.
  • To this frame are clipped components that top off the thermoplastic headboard 20 which secure the foam and fabric and / or skin to the frame.
  • the composite material used for the injection of any of the seat's constituent parts is essentially a fiber reinforced thermoformed material, preferably glass fiber reinforced polyamide. It may however have other combinations of thermoplastics with fibrous materials.
  • thermoplastic structure consisting of said parts, the backrest, seat and headboard
  • the method of injection into a single mold of this thermoplastic structure consisting of said parts, the backrest, seat and headboard provides for the possibility of each part being obtained from multi-injection of at least two different types of thermoplastic materials into different areas of the structure in order to be able to impart mechanical properties to each part. constituents in accordance with their special functions.

Abstract

The present invention concerns a structure of seat for vehicles, particularly for motorized vehicles. The main characteristic of this invention is the fact that it is constituted by three independent pieces; one that forms the seat back, 1, another one that constitutes the seat itself, 10, and the last one that forms the headrest, 17, which sustains the head/neck. These three parts are obtained by a single mould which allows the injection of the composite material with reinforcement structures formed by support portions, 7, 12 and 19. Those parts accommodate composite materials and comfort foams covered by textile fabric/leather; when those parts are joined together, they form the whole seat with a symmetric morphology.

Description

DESCRIÇÃO  DESCRIPTION
"ESTRUTURA DE BANCO PARA VEÍCULOS""VEHICLE SEAT STRUCTURE"
Âmbito do invento Scope of the invention
O presente invento diz respeito a uma estrutura de banco para veículos motorizados, preferencialmente para veículos automóveis. Mais concretamente é apresentada uma estrutura interna que compreende três partes independentes que constituem peças únicas, uma que forma o encosto das costas, outra que constitui um assento propriamente dito, outra ainda que forma a cabeceira para apoio da cabeça/pescoço, sendo cada uma das referidas partes obtida através de um único molde de injecção em material compósito com reforços estruturais formados por nervuras, partes essas que acomodam materiais compósitos e espumas de conforto revestidas com tecido e/ou pele, e que ligadas formam um assento de morfologia simétrica. The present invention relates to a seat structure for motor vehicles, preferably for motor vehicles. More specifically, an internal structure is presented comprising three independent parts that constitute single parts, one that forms the backrest, another that constitutes a seat itself, and yet another that forms the head / neck support, each one of which said parts obtained by means of a single injection molding of composite material with rib-formed structural reinforcements, which parts accommodating composite materials and comfort foam coated with fabric and / or skin, and which bond together form a seat of symmetrical morphology.
Técnica anterior Prior art
Tem sido constante a procura de novas soluções para estruturas de bancos de veículos motorizados, nomeadamente de veículos automóveis as quais confiram, além da necessária resistência e estabilidade uma boa relação peso/solidez. Esta procura tem como objectivo uma nova. estrutura completa de banco mas também de cada uma das suas peças componentes, i.e. assento, encosto e cabeceira. There has been a constant search for new solutions for motor vehicle seat structures, namely motor vehicles which, in addition to the necessary strength and stability, provide good weight / soundness. This search aims at a new one. complete bank structure but also of each of its component parts, ie seat, backrest and headboard.
São conhecidas da técnica anterior documentos que de algum modo pretendem atingir alguns dos objectivos do presente invento, i.e. são conhecidas estruturas completas de bancos e. estruturas para. as peças componentes do banco. Documents are known in the prior art to some extent to achieve some of the objects of the present invention, i.e. complete seat structures are known e.g. structures for. the component parts of the seat.
Entre as primeiras referem-se os documentos US 2008/0129097 e US 7.083.230. Among the first are US 2008/0129097 and US 7,083,230.
A patente US 2008/0129097 diz respeito a um assento moldado que é formado a partir de material plástico e que tem resistência aumentada e mecanismos de fixação. O assento inclui umas costas e um assento propriamente dito, ambos construídos a partir de um material plástico. 0 assento universal também inclui um reclinador articulado que se acha ligado simultaneamente às costas e ao assento propriamente dito. US 2008/0129097 relates to a molded seat which is formed from plastics material and which has increased strength and fastening mechanisms. The seat includes a back and a seat itself, both made of a plastic material. The universal seat also includes an articulated recliner that is simultaneously connected to the back and the seat itself.
A patente US 7.083.230 diz respeito a um assento híbrido compósito-metal , próprio para absorver energia. De acordo com um modo de realização, um assento de avião inclui um conjunto de assento propriamente dito e um conjunto de costas de assento. O conjunto de assento propriamente dito inclui múltiplos elementos metálicos rígidos da armação lateral, um elemento de absorção de energia próprio para se deformar e absorver energia aplicada. O conjunto de costas de assento acha- se fixado ao conjunto de assento propriamente dito e inclui também múltiplos elementos metálicos rígidos da armação lateral das costas os quais absorvem a energia que se gera em caso de embate frontal deformando- se de forma permanente durante a ocorrência de um grave embate frontal. US Patent 7,083,230 concerns a hybrid composite metal seat suitable for absorbing energy. According to one embodiment, an airplane seat includes a seat assembly itself and a seat back assembly. The seat assembly itself includes multiple rigid metal members of the side frame, an energy absorbing element for deforming and absorbing applied energy. The seat back assembly is attached to the seat assembly itself and also includes multiple rigid metal elements of the back side frame which absorb the energy generated in the event of a frontal impact and permanently deform during a severe frontal impact.
Como técnica anterior relevante para as estruturas de peças componentes do banco referem-se os documentos WO 2006081865, WO 2008019981. Relevant prior art for seat component structures are WO 2006081865, WO 2008019981.
O pedido de patente WO 2006081865 diz respeito a um apoio lombar capaz de ser integrado na armação de um assento, em particular do assento de um veículo automóvel, em que o referido apoio lombar compreende um varão de guiamento, dobrado de forma correspondente, sobre o qual são moldados por injecção, a partir de um material plástico, vários elementos de apoio, em forma de dedos, que se estendem segundo uma direcção transversal com respeito ao apoio lombar. Uns varões de ancoragem, próprios para a fixação de uma cobertura de assento ou de um almofadado de assento, e um varão transversal, próprio para accionar automaticamente um apoio de cabeça, também podem ser montados por meio de elementos moldados por injecção. Todos os componentes de material plástico podem ser produzidos por meio de um apropriado molde de moldagem por injecção numa única operação de moldagem por injecção. WO 2006081865 relates to a lumbar support capable of being integrated into the seat frame, in particular the seat of a motor vehicle, wherein said lumbar support comprises a correspondingly folded guide rod over the seat. which are injection molded from a plastics material several finger-shaped support elements extending in a transverse direction with respect to the lumbar support. Anchor rods for securing a seat cover or seat cushion and a transverse rod for automatically driving a headrest can also be mounted by injection molded elements. All components of plastics material may be produced by means of an appropriate injection molding mold in a single injection molding operation.
0 pedido de patente WO 2008019981 diz respeito a um componente compósito, como por exemplo as costas de um assento de urn veículo, que compreende uma porção de suporte e pelo menos uma camada compósita de reforço. A porção de suporte compreende um material termoplástico e a camada compósita de reforço compreende um material polimérico que impregna uma pluralidade de fibras. O material polimérico da camada compósita, de reforço é integrado com o material termoplástico da porção de suporte. Um método próprio para formar o componente compósito inclui as seguintes etapas: colocar a camada compósita no interior de um molde; aquecer o material termoplástico até que este vá ficar num estado fundido; e fazer com que o material termoplástico em estado fundido vá ser posto em contacto com a camada compósita. WO 2008019981 relates to a composite component, such as the back of a vehicle seat, which comprises a support portion and at least one reinforcing composite layer. The support portion comprises a thermoplastic material and the composite reinforcement layer comprises a polymeric material that impregnates a plurality of fibers. The polymeric material of the reinforcing composite layer is integrated with the thermoplastic material of the support portion. A proper method for forming the composite component includes the following steps: placing the composite layer within a mold; heat the thermoplastic material until it is in a molten state; and causing the molten thermoplastic material to be brought into contact with the composite layer.
Utilizaram- se para isso diferentes estruturas algumas das quais em material compósito, estruturas essas que tem apenas determinadas funções dentro da estrutura modular do assento. No entanto, e como se perceberá no decorrer desta descrição, nenhum dos documentos da técnica anterior tem exactamente os mesmos objectivos e vantagens da estrutura do presente invento. Different structures have been used for this purpose, some of which in composite material, which have only certain functions within the modular seat structure. However, and as will be appreciated throughout this description, none of the prior art documents have exactly the same aims and advantages as the structure of the present invention.
Sumário do invento Summary of the Invention
Geralmente, os bancos de veículos motorizados, particularmente de veículos automóveis que recorrem a materiais compósitos, pretendem ser mais leves e capazes de receber componentes que sejam de fácil montagem e fixação - espumas de conforto, das capas de revestimento e montagem de componentes "carry-over" e outros. O presente invento vai além dessas preocupações. Tem como objectivos fundamentais a concepção de uma estrutura completa para bancos de veículos que compreende três peças que constituem o encosto das costas, o assento propriamente dito, outra ainda que forma a cabeceira para apoio da cabeça/pescoço . Cada uma destas peças é obtida através de um único molde de injecção de material compósito termoplástico . Generally, motor vehicle seats, particularly motor vehicles that use composite materials, aim to be lighter and capable of receiving components that are easy to assemble and fix - comfort foams, liners and carry-component assemblies. over "and others. The present invention goes beyond these concerns. Its main objectives are the design of a complete vehicle seat structure comprising three parts that make up the backrest, the seat itself, yet another that forms the head / neck headrest. Each of these parts is obtained through a single injection mold of thermoplastic composite material.
Cada uma das referidas peças foi concebida para ser injectada em material compósito num único molde e são dotadas de reforços estruturais formados por nervuras. Consegue- se assim uma estrutura completa de banco com uma óptima relação peso/rigidez. Each of these pieces is designed to be injected into composite material in a single mold and is provided with rib-formed structural reinforcements. This provides a complete seat structure with optimum weight / stiffness ratio.
É portanto um objectivo do invento a obtenção de uma estrutura de assento que seja leve e resistente. It is therefore an object of the invention to obtain a seat structure that is light and sturdy.
Assim, o encosto das costas, formando um uma única peça modular simétrica, compreende um aro em forma de "U" de onde se projectam os apoios lombar e dorsal e se formam espaços ocos para albergar air-bags laterais e dois suportes para o guiamento dos apoios lombar e dorsal . Thus, the backrest, forming a single symmetrical modular piece, comprises a U-shaped frame from which the lumbar and dorsal supports are projected and hollow spaces are formed to house side airbags and two guiding supports of the lumbar and dorsal supports.
0 assento propriamente dito é formado por uma base com um espaço para acomodar o componente formado por material compósito e as espumas de conforto para as zonas isquiáticas do utilizador. A referida base comporta ainda espaço para a aplicação de reforços laterais metálicos. A cabeceira para encosto da cabeça/pescoço com o formato de almofada é dotada de um orifício longitudinal e de um sistema de clipagem lateral para fixação de componentes termoplásticos que rematam a cabeceira após a colocação da espuma de conforto e de tecido e/ou pele. The seat itself is formed of a base with a space to accommodate the composite material component and the comfort foams for the user's sciatic zones. Said base also includes space for the application of metallic side reinforcements. The cushion-shaped head / neck headrest has a longitudinal hole and a side clip system for attaching thermoplastic components that top off the headboard after the comfort foam and fabric and / or skin are fitted.
Ainda outro objectivo reside no facto de esta estrutura permitir reduzir drasticamente o número de componentes utilizados no fabrico da referida estrutura e derivado do facto de ser utilizado um termoplástico a simplificação do método de fabrico, da sua montagem. Yet another object is that this structure allows to drastically reduce the number of components used in the manufacture of said structure and derived from the fact that a thermoplastic is used to simplify the method of manufacture, its assembly.
Outro ainda objectivo do invento consiste nas vantagens ambientais que advém do facto do material utilizado na concepção da estrutura ser reciclável. Still another object of the invention is the environmental advantages that derive from the fact that the material used in the structure design is recyclable.
Outros objectivos e vantagens tornar-se-ão evidentes no decorrer da descrição que se segue. Other objects and advantages will become apparent from the following description.
Breve descrição dos desenhos Brief Description of Drawings
A descrição que se segue tem por base os desenhos anexos que, sem qualquer carácter limitativo representam o modelo de realização preferido. Assim: The following description is based on the accompanying drawings which, without limitation, represent the preferred embodiment. Like this:
nas figuras 1 a e b representam- se vista em perspectiva explodida de frente e detrás do banco com os componentes assento e encosto;  Figures 1a and b show exploded perspective view of the front and rear of the seat with the seat and backrest components;
- nas figuras 2 a e b representa- se uma vista em perspectiva por detrás e pela frente da estrutura da peça de encosto para as costas; - Figures 2 and b show a view in perspective behind and front of the backrest frame;
- na figura 3 representa -se uma vista em perspectiva da estrutura das figuras 2 com a peça de guiamento; e  3 is a perspective view of the structure of FIGS. 2 with the guide piece; and
- nas figuras 4 a, b, c e d representam- se pormenores da estrutura em corte do encosto;  - Figures 4a, b, c and d show details of the backrest sectional structure;
nas figuras 5 a e b representam- se vistas em perspectiva do assento respectivamente por cima e por debaixo ;  Figures 5a and b show perspective views of the seat respectively from above and below;
- na figura 6 representa- se uma vista em perspectiva do assento, encosto e a ligação entre ambas as peças;  Figure 6 shows a perspective view of the seat, backrest and the connection between both parts;
- nas figuras 7 a, b e c representam-se vistas em perspectiva respectivamente por detrás, de lado e de frente da cabeceira;  - Figures 7a, b and c show perspective views respectively from behind, side and front of the headboard;
- nas figuras 8 a, b e c representa-se vistas em de pormenor da cabeceira e da sua ligação ao encosto; e  Figures 8a, b and c show a detailed view of the headboard and its connection to the backrest; and
Descrição detalhada do invento Detailed Description of the Invention
Conforme se pode observar nas figuras anexas, a estrutura de banco para veículos motorizados, particularmente para veículos automóveis compreende essencialmente três partes independentes que constituem peças únicas, uma que forma o encosto das costas 1, outra que constitui um assento propriamente dito 10, outra ainda que forma a. cabeceira para apoio da cabeça/pescoço 17 (representada nas figuras Ia e 7) sendo cada uma das referidas partes obtida através de um único molde de injecção em material compósito com reforços estruturais formados por nervuras 7, 12 e 19, partes essas que acomodam materiais compósitos e espumas de conforto revestidas com tecido e/ou pele, e que ligadas formam um assento de morfologia simétrica. As can be seen from the accompanying figures, the seat structure for motor vehicles, particularly for motor vehicles, comprises essentially three independent parts that form one piece, one that forms the backrest 1, another that forms a seat itself 10, and yet another. what form a. head support for the head / neck 17 (shown in Figures IA and 7) and each of said parts obtained through a single injection molding of composite material with structural ribs formed by ribs 7, 12 and 19, These parts which accommodate composite materials and comfort foam coated with fabric and / or skin, and which bond together form a seat of symmetrical morphology.
O referido encosto 1 é formado por um aro 2 em forma de "U" de onde se projectam os apoios lombar 4 e dorsal 3 e se formam espaços ocos 5 para albergar air-bags lacerais e dois suportes 6 para guiamento do sistema de ligação da cabeceira 17, formando um uma única peça modular simétrica . Said backrest 1 is formed by a U-shaped rim 2 from which the lumbar 4 and dorsal supports 3 are projected and hollow spaces 5 are formed to house laceral air bags and two supports 6 for guiding the connection system of the headboard 17, forming a single symmetrical modular piece.
O referido aro 2, fechado na extremidade inferior, é dotado de nervuras estruturais de reforço 7 que se distribuem ao longo de todo o seu perímetro. As referidas nervuras podem apresentar configurações distintas que no entanto são projectadas depois de processos iterativos que optimizam a sua configuração, disposição e espessura. Ά combinação da estrutura com o aro 2 em forma de "U" com as nervuras estruturais de reforço 7 visam a sua optimização em termos da relação peso/rigidez. Said ring 2, closed at the lower end, is provided with reinforcing structural ribs 7 which are distributed along its entire perimeter. Said ribs may have different configurations which are nevertheless projected after iterative processes that optimize their configuration, arrangement and thickness. The combination of the structure with the U-shaped rim 2 and the reinforcing structural ribs 7 is aimed at optimizing the weight / stiffness ratio.
Os apoios lombar 4 e dorsal 3 que são injectados no mesmo molde do aro 2, são constituídos por um conjunto de elementos fixos respectivamente na parte superior e no elemento inferior 8 que fecha o aro 1. O número de elementos é pré-definido de acordo com as condições de conforto pretendidas. Estes elementos essencialmente compreendem réguas dispostas horizontalmente que são devidamente unidas por outras réguas verticais. Conforme se pode observar na figura 3 nestes apoios é fixada uma peça 9 independente da estrutura, com a configuração de um "U" onde a alma se encontra fixa no topo do apoio dorsal 3 e as abas se desenvolvem até à extremidade inferior do apoio lombar 4. Esta peça 9 tem funções de guia. de orientação e suporta os esforços a que os apoios estão sujeitos quando actuados pelos utilizador. Essas mesmas guias vão permitir que aqueles apoios possam assumir todas as variantes de posição sem se deslocarem do campo de acção. De preferência a referida guia é metálica. Pode contudo também ser obtida em material compósito adequado. The lumbar supports 4 and dorsal 3 which are injected in the same mold of the rim 2, consist of a set of elements fixed respectively in the upper part and the lower element 8 that closes the rim 1. The number of elements is predefined accordingly. with the desired comfort conditions. These elements essentially comprise horizontally disposed rulers which are properly joined by other vertical rulers. As if As shown in Figure 3, these supports are attached to a frame-independent part 9, with the configuration of a "U" where the web is fixed to the top of the backrest 3 and the tabs extend to the lower end of the lumbar support 4. This 9 piece has guiding functions. and supports the stresses to which the supports are subjected when actuated by the user. These same guides will allow those supports to assume all position variants without moving from the field of action. Preferably said guide is metallic. It may however also be obtained from suitable composite material.
Os espaços ocos 5 dispostos lateralmente e que se destinam a albergar air bags e respectivos dispositivos de accionamento podem ter configurações adequadas aos tamanhos dos air bags e dispositivos. The hollow spaces 5 disposed laterally for housing air bags and their actuating devices may be configured to suit the sizes of air bags and devices.
Esta estrutura do encosto 1 contempla ainda a possibilidade de compreender um sistema de guiamento para o apoia de cabeça ou cabeceira 17, sistema esse que é constituído pelos suportes 6 também previstos no mesmo molde . This backrest structure 1 further comprises the possibility of comprising a guide system for the headrest or headrest 17, which system consists of the supports 6 also provided in the same mold.
Ligado ao encosto 1 encontra- se o assento propriamente dito 10. A estrutura desta peça única em material termoplástico em material compósito deverá suportar os esforços do sistema de basculamento para inclinação do encosto, sistema de deslizamento e de fixação de calhas. Como se pode observar nas figuras, o assento 10 é constituído por uma base 11 em cuja parte inferior estão dispostas nervuras de reforço 12. Estas nervuras asseguram a. rigidez do assento. A parte superior da base 11 comporta um espaço 13 que se destina a receber um componente formado por um material compósito com densidade que permite a redução de espessura da espuma de conforto a ser aplicada garantindo o conforto ao passageiro durante a sua utilização. Este material compósito pode, por exemplo ser à base de cortiça com gel. Attached to the backrest 1 is the seat itself 10. The structure of this one-piece composite material thermoplastic material must withstand the efforts of the backrest tilting system, sliding system and rail fastening system. As can be seen from the figures, the seat 10 consists of a base 11 in which lower ribs 12 are provided with reinforcing ribs. seat rigidity. The upper part of the base 11 comprises a space 13 which is intended to receive a component formed of a density composite material which allows the thickness reduction of the comfort foam to be applied ensuring comfort to the passenger during its use. This composite material may, for example, be gel-based cork.
Lateralmente, a base 11 é dotada de espaços 14 para acomodarem reforços metálicos 15 independentes que garantem a rigidez estrutural necessária e estabelecida por normas de homologação, por exemplo para veículos automóveis . Laterally, the base 11 is provided with spaces 14 for accommodating independent metallic reinforcements 15 which guarantee the necessary structural rigidity and established by type approval standards, for example for motor vehicles.
A ligação do assento 10 ao encosto 1 é realizada por um sistema formado por um conjunto de peças conhecido genericamente, representado nas figuras pela referência 16. Os reforços externos destinam-se a suportar o sistema de basculamento (movimento de translação do assento) . The connection of the seat 10 to the backrest 1 is effected by a system of a generally known set of parts, represented in the figures by reference 16. The external reinforcements are intended to support the tilting system (translational movement of the seat).
A morfologia simétrica desta peça permite que a estrutura do banco seja utilizada tanto na parte esquerda do veículo como na parte direita, i.e. assento do condutor ou do passageiro. A cabeceira 17 é basicamente constituída por uma estrutura obtida através de um único molde e apresenta um orifício longitudinal 18 passante de topo a topo que vai permitir tornar a cabeceira visivelmente mais leve. 0 design desta cabeceira permite ainda contemplar várias aplicações, tais como incorporação de sistemas áudio/vídeo e air-bags . The symmetrical morphology of this part allows the seat structure to be used on both the left and right sides of the vehicle, ie driver's or passenger seat. Headboard 17 is basically comprised of a structure obtained from a single mold and has an end-to-end longitudinal hole 18 that will allow the headboard to be visibly lighter. The design of this headboard also allows for various applications such as incorporation of audio / video systems and air bags.
Há semelhança das anteriores peças constituintes do banco, a cabeceira é dotada de nervuras de reforço 19 dispostas na sua parte inferior que visam a optimização da cabeceira em termos da sua relação peso/rigidez. Estes reforços 19 vão permitir receber os pinos de encaixe 21 da cabeceira 17 ao encosto 1. Os referidos pinos 21 são fixos à estrutura por intermédio de sistemas de fixação adequados como parafusos, rebites, cavilhas, etc. A esta estrutura são clipados componentes que rematam a cabeceira 17 termoplásticos 20 que fixam a espuma e tecido e/ou pele à estrutura . Similar to the previous constituent parts of the seat, the headrest is provided with reinforcing ribs 19 disposed at its bottom to optimize the headrest in terms of its weight / stiffness ratio. These reinforcements 19 will be able to receive the socket pins 21 from the headrest 17 to the backrest 1. Said pins 21 are fixed to the structure by suitable fastening systems such as screws, rivets, dowels, etc. To this frame are clipped components that top off the thermoplastic headboard 20 which secure the foam and fabric and / or skin to the frame.
O material compósito utilizado na injecção de qualquer das partes constituintes do banco é essencialmente um material termoformado reforçado com fibras de preferência poliamida com reforço de fibras de vidro. Pode no entanto ter outras combinações de termoplásticos com materiais fibrosos. The composite material used for the injection of any of the seat's constituent parts is essentially a fiber reinforced thermoformed material, preferably glass fiber reinforced polyamide. It may however have other combinations of thermoplastics with fibrous materials.
0 método de injecção num único molde desta estrutura termoplástica constituída pelas referidas peças, encosto, assento e cabeceira, prevê a possibilidade de cada uma das peças ser obtida proveniente de muiti- injecção de pelo menos dois tipos diferentes de materiais termoplásticos, para zonas diferentes das estruturas de modo a poder serem conferidas propriedades mecânicas a cada uma das suas partes constituintes de acordo com as funções especiais a que se destinam. The method of injection into a single mold of this thermoplastic structure consisting of said parts, the backrest, seat and headboard provides for the possibility of each part being obtained from multi-injection of at least two different types of thermoplastic materials into different areas of the structure in order to be able to impart mechanical properties to each part. constituents in accordance with their special functions.
Como será evidente ao perito da técnica ao modelo de realização anteriormente descrito podem retirar-se alguns dos seus componentes constituintes de cada umas das peças, tais como um ou ambos dos apoios lombar e dorsal, os suportes do apoio de cabeça e os air-bags, do encosto. Tais alterações permitem obter um produto com a flexibilidade. Por outras palavras a sua morfologia modular permite que seja apresentada em quatro versões distintas consoante o grau de conforto pretendido para/pelo utilizador, através da introdução ou substituição de elementos móveis (postiços) no molde de injecção. Esta flexibilidade não fragiliza a estrutura base das peças constituintes do banco e apresenta a grande vantagem a redução do número de moldes, por exemplo, mas também de outros benefícios a nível logístico. As will be apparent to one skilled in the art to the above-described embodiment, some of its constituent components may be removed from each of the parts, such as one or both of the lumbar and dorsal supports, the headrest supports and the air bags. , from the backrest. Such changes allow to obtain a product with flexibility. In other words its modular morphology allows it to be presented in four different versions depending on the degree of comfort desired to / by the user by introducing or replacing movable (false) elements in the injection mold. This flexibility does not weaken the base structure of the seat's constituent parts and has the great advantage of reducing the number of molds, for example, but also of other logistical benefits.

Claims

REIVINDICAÇÕES
1. Estrutura de banco para veículos, particularmente para veículos motorizados, caracterizada por compreender três partes independentes que constituem peças únicas, uma que forma o encosto 1 das costas, outra que constitui um assento propriamente dito 10, outra ainda que fornia a cabeceira 1? para apoio da cabeça/pescoço, sendo cada uma das referidas partes obtida através de um único molde de injecção em material compósito com reforços estruturais formados por nervuras 7, 12 e 19, partes essas que acomodam materiais compósitos e espumas de conforto revestidas com tecido, e que ligadas formam um assento de morfologia simétrica. 1. Vehicle seat structure, particularly for motor vehicles, characterized in that it comprises three independent parts forming one piece, one forming the backrest 1, another forming a seat itself 10, and yet another providing headrest 1? for head / neck support, each of these parts being obtained by a single injection molding of composite material with structural reinforcements formed by ribs 7, 12 and 19, which portions accommodate composite materials and fabric-coated comfort foams, and that linked form a seat of symmetrical morphology.
2. Estrutura de banco para veículos de acordo com a reivindicação anterior caracterizada por o encosto das costas ser constituído por um aro 2 em forma de "U" de. onde se projectam os apoios lombar 4 e dorsal 3 e se formam espaços ocos 5 para albergar air-bags laterais e dois suportes 6 para o guiamento da cabeceira 17, formando um uma única peça modular simétrica. Vehicle seat structure according to the preceding claim, characterized in that the backrest consists of a U-shaped rim 2. where the lumbar 4 and dorsal supports 3 are projected and hollow spaces 5 are formed to house side air bags and two headrest guides 6 to form a single symmetrical modular piece.
3. Estrutura de banco para veículos de acordo com as reivindicações 1 e 2, caracterizada por os reforços estruturais 7 do referido aro 1 da parte do encosto das costas se distribuem ao longo de todo o seu perímetro. - 2 - Vehicle seat structure according to Claims 1 and 2, characterized in that the structural reinforcements 7 of said backrest rim 1 are distributed along its entire perimeter. - 2 -
. Estrutura de assento para veículos de acordo com as reivindicações anteriores, caracterizada por nos apoios lombar 4 e dorsal 3 ser fixada uma peça 9, independente da estrutura, com a configuração de um "U" onde a alma se encontra fixa no topo do apoio dorsal e as abas se desenvolvem até à extremidade inferior do apoio lombar, peça essa que tem funções de guia de orientação e que suporta os esforços a que os apoios estão sujeitos quando actuados pelos utilizador, guias essas que vão permitir que aquelas apoios possam assumir todas as variantes de posição sem se deslocarem do campo de acção. . Vehicle seat structure according to one of the preceding claims, characterized in that a lumbar-shaped part 9 is attached to the lumbar 4 and dorsal supports 3 with the configuration of a "U" where the core is fixed to the top of the dorsal support. and the tabs extend to the lower end of the lumbar support, which part has guiding functions and supports the stresses to which the supports are subjected when actuated by the users, which guides will allow those supports to assume all position variants without moving from the field of action.
5. Estrutura de banco para veículos de acordo com a reivindicação anterior, caracterizada por a peça 9 dos apoios lombar 4 e dorsal 3 ser de material metálico. Vehicle seat structure according to the preceding claim, characterized in that the lumbar 4 and dorsal 3 support part 9 is of metallic material.
6. Estrutura de banco para veículos de acordo com as reivindicações 4, caracterizada por a peça 9 dos apoios lombar 3 e dorsal 4 ser de material compósito. Vehicle seat structure according to Claim 4, characterized in that the lumbar 3 and dorsal 4 support part 9 is of composite material.
7. Estrutura de banco para veículos de acordo com a reivindicação 1, caracterizada por o assento propriamente dito 10 ser formado por uma base 11 com um espaço 13 para acomodar o componente formado por material compósito e as espumas de conforto para as zonas isquíãticas do utilizador, dispondo-se os referidos reforços estruturais 12 nas zonas laterais e inferior da base, base essa que comporta ainda espaço para a aplicação de reforços laterais metálicos 15. - 3 - Vehicle seat structure according to Claim 1, characterized in that the seat itself 10 is formed by a base 11 with a space 13 to accommodate the composite material component and the comfort foam for the user's ischemic zones. said structural reinforcements 12 being arranged in the lateral and lower zones of the base, which base also includes space for the application of metallic lateral reinforcements 15. - 3 -
8. Elstrutura de banco para veículos de acordo com a reivindicação 1, caracterizada por os reforços estruturais da cabeceira 17 para encosto da cabeça/pescoço se encontrarem dispostos na zona inferior, cabeceira essa que é dotada de um orifício longitudinal 18 e de um sistema de clipagem lateral para fixação de componentes termoplásticos 20 que rematam a cabeceira após a colocação da espuma de conforto e de tecido e/ou pele. Vehicle seat structure according to Claim 1, characterized in that the structural reinforcements of the head / neck headrest 17 are arranged in the lower region, which headrest is provided with a longitudinal hole 18 and a system for side clip for attachment of thermoplastic components 20 that top off the headboard after placement of the comfort foam and fabric and / or skin.
9. Estrutura de assento para veículos de acordo com as reivindicações 1 e 9, caracterizada por os reforços estruturais da cabeceira permitirem a colocação de pinos de encaixe 21 da cabeceira 17 ao encosto 1, pinos esses que são fixados por intermédio de sistemas de fixação. Vehicle seat structure according to Claims 1 and 9, characterized in that the headrest structural reinforcements allow the insertion of studs 21 from the headrest 17 to the backrest 1, which pins are fixed by means of fastening systems.
10. Estrutura de banco para veículos de acordo com as reivindicações anteriores, caracterizada por o material compósito a injectar nos moldes da cada uma das partes ser um material termoformado reforçado com fibras. Vehicle seat structure according to one of the preceding claims, characterized in that the composite material to be injected into the molds of each part is a fiber-reinforced thermoformed material.
11. Estrutura de banco para veículos de acordo com a reivindicação 10, caracterizada por o material compósito ser poliamida com reforço de fibras de vidro. Vehicle seat structure according to Claim 10, characterized in that the composite material is glass fiber reinforced polyamide.
12. Estrutura de banco para veículos de acordo com a reivindicação 10, caracterizada por o material compósito ser formado por combinações de termoplásticos com materiais fibrosos. Vehicle seat structure according to Claim 10, characterized in that the composite material is formed by combinations of thermoplastics and fibrous materials.
13. Método para a obtenção da estrutura de banco para veículos tal como definida nas reivindicações anetriores, caracterizado pela injecção do material compósito em molde únicos para cada uma das referidas partes constituintes, moldes esses que permitem a multi- injecção de pelo menos dois tipos diferentes de material compósito para zonas diferentes de cada parte. Method for obtaining the vehicle seat structure as defined in the preceding claims, characterized by injecting the single composite composite material into each of said constituent parts, which molds permit multi-injection of at least two different types. of composite material for different zones of each part.
PCT/PT2009/000045 2009-08-17 2009-08-17 Structure of a seat for vehicles WO2011021952A1 (en)

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