EP1750536A1 - Mallette et procede de fabrication - Google Patents

Mallette et procede de fabrication

Info

Publication number
EP1750536A1
EP1750536A1 EP04740030A EP04740030A EP1750536A1 EP 1750536 A1 EP1750536 A1 EP 1750536A1 EP 04740030 A EP04740030 A EP 04740030A EP 04740030 A EP04740030 A EP 04740030A EP 1750536 A1 EP1750536 A1 EP 1750536A1
Authority
EP
European Patent Office
Prior art keywords
case
mold
shell
piece
bottom wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04740030A
Other languages
German (de)
English (en)
Inventor
Olivier Daillance
Bertrand Tipret
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.)
Louis Vuitton Malletier SA
Original Assignee
Louis Vuitton Malletier SA
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 Louis Vuitton Malletier SA filed Critical Louis Vuitton Malletier SA
Publication of EP1750536A1 publication Critical patent/EP1750536A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/02—Materials therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C5/00—Rigid or semi-rigid luggage
    • A45C5/03—Suitcases

Definitions

  • the present invention relates to a piece of baggage or "case” and a method of manufacturing such a case. More particularly, the invention relates to a case comprising: a rigid shell essentially comprising a bottom wall extending substantially in a plane, and a side wall extending around the entire periphery of the bottom wall and away from the plane of the bottom wall, the bottom wall and the side wall thus defining an internal space with an open face; and a rigid lid closing the open face when the case is closed.
  • Document FR 2 804 294 describes an example of such a case whose volume is formed by two shells connected together via one edge of each shell, the edges of the shells extending in wide curves that are complementary in pairs.
  • the case described in that document is intended to form a rigid container that is extremely resistant to mechanical stress such as stress generated by the container being crushed, dropped, or subjected to impacts, etc.
  • the invention provides a case which, in addition to having some of the above-mentioned characteristics, is characterized by the fact that the shell is provided with a rim at the periphery of the open face, the shell thus having eight corners between which the internal volume occupies substantially the entire volume of the case.
  • the word "corner” can designate a true corner, but more generally a corner that would be at the intersection of the main faces of the case. Consequently, a “corner” can be defined as a trihedral constituted with three main faces of the case.
  • the case of the invention has a volume essentially defined by a single one-piece shell. All of the corners and edges are on said one-piece shell.
  • a case is thus obtained that is stronger than prior art cases such as a case made up of several parts, notably made up of two half-shells, and in which stresses tend to cause each part to fret relative to the other, thereby leading to said parts coming apart or even separating completely, resulting in the destruction of the case, or at least resulting in the belongings contained in the case being lost.
  • the shell is made of a composite material
  • the lid is made of a composite material
  • - the composite material is made up of carbon fibers impregnated with a synthetic resin.
  • the invention provides a method of manufacturing a case implementing a mold for making a shell for a case, the mold being made up of at least one portion defining an inside surface, said method comprising operations consisting in: lining the molding surface of the mold at least in part with at least one piece of a component material of the case; pressing said at least one piece on the molding surface with a flexible pouch on which is exerted a pressure .
  • each piece of the component material of the case is made of a composite material; - the composite material is made up of carbon fibers impregnated with a synthetic resin; - the mold is made up of a plurality of portions, and the portions are assembled together before the inside surface of the mold is lined with at least one piece of component material of the case; - the flexible pouch is inflated inside the mold in order to remove as much air as possible between the mold and said piece; - the mold in which at least one piece of the component material of the case is deposited is placed in a flexible pouch which is then evacuated so as to remove as much air as possible between the mold and said piece; - a plurality of portions of the mold are disassembled in order to extract the shell; - the mold in which the component material of the case is deposited is subjected for in the range 1 hour to 2 hours to a pressure lying in the range 5 bars to 10 bars and to a temperature lying in the range 100
  • Figure 1 is a diagrammatic perspective view showing an example of a case of the present invention
  • Figure 2 is a diagrammatic view showing an example of implementation of the method of manufacturing a case such as the case shown in Figure 1.
  • like references designate elements that are identical or similar.
  • An embodiment of a case of the invention is shown in Figure 1.
  • the case 1 comprises a shell 2 and a lid .
  • the lid 4 and the shell 2 are made of a composite material such as fibers impregnated with synthetic resin. For example, they may be carbon fibers impregnated with epoxy resin.
  • the lid 4 is made up of a cover 6 and of a backing cover 8.
  • the cover 6 is designed to form a portion of the outside surface of the case 1, while the backing cover 8 is designed to form one of the inside faces of the case 1 when the lid 4 is closed.
  • the shell 2 is essentially in the form of a one-piece box.
  • the one- piece box comprises a bottom wall 10 and a side wall 12.
  • the bottom wall 10 extends substantially in one horizontal plane when the case 1 is open in a position adapted to stowing belongings in it.
  • the side wall 12 extends substantially perpendicularly to the bottom wall 10, and over the entire periphery thereof. It is made up of four faces 12a, 12b, 12c, and 12d.
  • the side wall 12 Opposite from the bottom wall 10, the side wall 12 is extended by a rim 14 in a plane substantially parallel to the bottom wall.
  • the shell 2 thus defines an internal space 15 with an open face corresponding to the surface left vacant inside the rim 14.
  • the shell 2 thus has eight corners 3 and twelve main edges between which the internal space 15 occupies substantially the entire volume of the case 1.
  • the rim 14 constitutes reinforcement that stiffens the case and is effective in increasing the strength of the side wall 12.
  • a single hinge 16 is fixed firstly to the side wall 12 and secondly to the lid 4.
  • a gasket 20 is fixed to the lid 4.
  • the gasket 20 is designed to co-operate with the rim 14.
  • the shell 2 is provided with grooves serving to receive protective edging strips 22, e.g. made of wood.
  • the shell 2 is also provided with reinforcement 24 underlying a handle 26.
  • the shell is also provided with notches 28 in which small wheels are fixed 30.
  • Making the complex shape of the shell 2, in particular at the rim 14, at the grooves for the edging strips 22, at the reinforcement 24 for the handle 26, and at the notches 28 for the wheels 30, etc., requires a special manufacturing method. In certain models of case not described herein, a channel can even be provided in the rim 14. An implementation of the method of the invention is described below with reference to Figure 2.
  • pieces 31 are cut out to pre-established patterns from a sheet of carbon fibers pre-impregnated with epoxy resin. Some of the pieces 31 are to serve to form the main faces of the case. Deposited in one or more thicknesses, they can then be referred to as "skins" 312. Others of the pieces 31 serve to form pieces of reinforcement 311 which are interposed between or deposited on the skins 312, at the edges, at the points at which the hinge 16 is fixed, or at points at which other elements are fixed, etc.
  • a first set or "kit” of pieces 31 serving for manufacturing a case are cut out manually by an experienced operator.
  • the pieces of the first kit are than digitized, in order to optimize use of the raw material, and in order to enable the various subsequent kits to be cut out automatically.
  • the kit is enclosed in a plastics film before being used in the next few hours .
  • the pieces 31 in each kit are then deposited in a layout that is precisely determined in a mold 34 comprising various mold portions 32 that are assembled together to form it.
  • the number of the portions 32 is, for example, thirteen for the mold 34 of the shell 2 ( Figure 2a) .
  • the mold is made of carbon or of metal.
  • first and second skins 312, and the reinforcing pieces 311 are disposed in the mold.
  • the pieces 31 are intrinsically sticky, and they can thus line the inside of the mold 34.
  • a flexible pouch 36 is inflated inside the mold 34, in order to press the pieces 31 against the portion of the inside surface of the mold that it covers ( Figure 2b) .
  • the flexible pouch 36 can be placed inside a mold and then inflated, or else a mold lined with pieces 31 is placed in the flexible pouch which is evacuated.
  • the mold 34 is then placed in an oven for 1 hour 30, at a pressure of ⁇ bars and at a temperature of 130°C, for a polymerization cycle.
  • the numbering 1, 2, 3, 4, 5, and 6 in the above table, for the faces of the case corresponds to a standardized numbering system.
  • the corresponding faces are respectively, with the references used above, the faces 12a, top of the lid 4, 12c, outside face of the bottom wall 10, 12b, and 12d.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

L'invention concerne une mallette comportant une coquille rigide monobloc (2) présentant une paroi de fond et une paroi latérale (12). La paroi de fond (10) et la paroi latérale (12) définissent un espace intérieur (15) présentant un côté ouvert. Un couvercle rigide (4) ferme le côté ouvert. La coquille (2) est pourvue d'un cerclage (14) sur la périphérie du côté ouvert. Par conséquent, la coquille (2) comporte huit coins entre lesquels l'espace intérieur occupe essentiellement tout le volume de la mallette (1).
EP04740030A 2004-06-01 2004-06-01 Mallette et procede de fabrication Withdrawn EP1750536A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/006580 WO2005117635A1 (fr) 2004-06-01 2004-06-01 Mallette et procede de fabrication

Publications (1)

Publication Number Publication Date
EP1750536A1 true EP1750536A1 (fr) 2007-02-14

Family

ID=34957836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740030A Withdrawn EP1750536A1 (fr) 2004-06-01 2004-06-01 Mallette et procede de fabrication

Country Status (2)

Country Link
EP (1) EP1750536A1 (fr)
WO (1) WO2005117635A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110592A1 (it) * 2011-07-05 2013-01-06 Bric S Ind Valigeria Fine S P A Valigia con struttura migliorata

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674394A (en) * 1971-01-18 1972-07-04 Structural Fibers Sliding core means for the manufacture of fiber-reinforced plastic tanks
IT211696Z2 (it) * 1987-04-15 1989-04-07 Plastimoda Srl Articolo di valigeria costituito da un corpo scatolare con vano di apertura chiudibile mediante un coperchio privo di spigoli
DE4402550A1 (de) * 1994-01-28 1995-08-03 Raymond A Gmbh & Co Kg Verklebbares Befestigungselement zum Halten von Bau- oder Funktionsteilen auf Trägerteilen
EP0914784B1 (fr) * 1997-10-30 2003-10-08 Swiss Luggage SL AG Conteneur en particulier valise et procédé de fabrication
FR2804294B1 (fr) 2000-01-31 2004-10-29 Jubinov Sc Contenant tel qu'un bagage, un etui ou analogue en materiau rigide, ayant des faces exterieures raccordees selon un volume spheroidal
EP1238785B1 (fr) * 2001-03-05 2004-04-28 Swiss Luggage SL AG Procédé pour fabriquer un article profilé en forme de coque et moule utilisable pour celui-ci

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005117635A1 *

Also Published As

Publication number Publication date
WO2005117635A1 (fr) 2005-12-15

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