EP1894483B1 - Verfahren zur Herstellung eines Schutzhelmes - Google Patents
Verfahren zur Herstellung eines Schutzhelmes Download PDFInfo
- Publication number
- EP1894483B1 EP1894483B1 EP07014881A EP07014881A EP1894483B1 EP 1894483 B1 EP1894483 B1 EP 1894483B1 EP 07014881 A EP07014881 A EP 07014881A EP 07014881 A EP07014881 A EP 07014881A EP 1894483 B1 EP1894483 B1 EP 1894483B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- yoke
- helmet
- panel
- cap
- 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.)
- Not-in-force
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Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/003—Helmet covers
Definitions
- the invention relates to a method of manufacturing a protective helmet.
- helmets For recreational sports such as skating, ice skating, biking, skiing, etc., it is becoming more common to wear a hard hat.
- These helmets generally comprise an outer shell made of a thin and rigid material, for example polycarbonate or ABS, and inside a damping cap for example made of polystyrene.
- These helmets are further equipped with a chinstrap and optionally an auxiliary restraint that passes on the back of the neck of the user.
- a chinstrap and optionally an auxiliary restraint that passes on the back of the neck of the user.
- Most often they also have elements of comfort such as foam cushions, a textile trim, sometimes called a cap, on the inside of the cap or other.
- vents at the outer shell and the cap which form air ducts.
- the shell and the cap are manufactured separately and subsequently assembled, for example, using glue, or any other appropriate means.
- the shell is made and then placed in a mold to inject a material which will form the cap after expansion and hardening.
- the outer shell of the helmet is formed by the thin shell.
- the shell is constituted by a very thin sheet of a PVC type material whose thickness is such that when bare, this shell has the rigidity necessary to provide the protection expected by the helmet final.
- the cap is made of expanded polystyrene or an equivalent material. Since the assembly of the cap and the shell is done directly in the mold, during the polystyrene expansion phase, this helmet manufacturing technology is called "in-mold" technology.
- Helmets are a protective accessory that does not directly affect the performance of the user in his sport practice. Also to make the helmet more attractive during its purchase and its use manufacturers have sought to improve its aesthetics.
- a first way was to work the shape of the outer shell of the helmet and its vents. Another way has been to add accessories, for example a visor.
- Another way has been to decorate the outer shell, for example by means of stickers, transfers, by a screen printing technique or by painting to directly print a pattern on the shell.
- these devices can hardly be set up for helmets obtained by in-mold technology because the sheet of material which will constitute the outer skin of the helmet, that is to say the shell, is relatively fragile when not supported by the cap.
- the document EP 1 038 455 discloses a helmet decoration process in which a layer of leather is disposed on the shell.
- the object of the invention is achieved by providing a method according to claims 1 to 10 and a helmet obtained by such a method.
- the seam line is visible from the outside.
- the yoke comprises several widths and a seam line at the junction of two widths binds the yoke to the shell.
- the widths have a different texture and / or color.
- the yoke may also be attached to the shell by additional assembly means such as a strip of glue.
- the shell may have openings to form vents, in which case the yoke has cuts coincident with said openings.
- the flexible material may be a textile fabric, a leather band or any other flexible material.
- the protective helmet comprises an outer shell and a damping cap disposed inside the shell, the assembly defining a plane of symmetry, the shell being formed by a thin shell.
- the shell is covered at least locally by a yoke made of a flexible material, the yoke is stretched against the shell and is attached to the shell by at least one seam line along one of its edges.
- the outer shell is produced, a yoke made of flexible material is prepared, the outer shell is bonded to the said yoke by means of at least one sewing line along one edge of the yoke, and then fill the inside of the shell with the cap.
- the figure 1 shows the general construction of a helmet to which the invention applies.
- the figure 2 represents in view of behind a helmet according to a first embodiment of the invention.
- the figure 3 shows the helmet of the figure 2 seen from the side.
- the figure 4 is a rear view of a helmet according to another embodiment of the invention.
- the figure 5 represents the helmet of the figure 4 seen from the side.
- the Figures 10 to 14 illustrate different ways of assembling the widths of a yoke.
- the Figures 15 to 18 show different modes of mounting the yoke at an opening of the shell.
- the Figures 19 to 21 show different modes of mounting the yoke along an edge of the shell.
- the figure 22 illustrates a phase of the manufacturing process of the invention.
- the figure 23 relates to an alternative embodiment of the method.
- the figure 1 represents a helmet 10 which comprises an outer shell 11 and an inner cap 12.
- the outer shell is formed by a shell made of a plastic material, and has a thin thickness of less than 1.5 millimeters. In particular, it can be obtained from a flat sheet of polycarbonate or PVC having a thickness of between 0.7 and 1.5 millimeters which has been cut and shaped by a thermoforming technique.
- the shell optionally has openings, such as the openings 14, 15, 16, and other openings where appropriate, as well as recessed or raised areas, possibly with edges of rupture of shape, in correspondence or not with the openings.
- the inner cap 12 forms a cushioning layer which is provided to envelop and protect the user's head. It is for example made of expanded polystyrene. It is intended to internally fill the shell 11.
- the outer wall of the cap conforms to the inner shape of the shell. Preferably, it has openings coinciding with the openings of the shell so as to form overall vents to facilitate the circulation of air under the cap.
- the shell and the cap have the shape of a symmetrical sphere portion relative to a median vertical plane that defines two hemispheres. This plan is parallel to the plan of figures 3 and 5 .
- the term "longitudinal” designate a direction parallel to this plane and “transverse” designate a perpendicular direction, that is to say that passes from one hemisphere to another.
- the cap is made and assembled to the hull by any appropriate means.
- the shell and the cap are made separately and then assembled to each other for example by means of a glue or a single-sided or double-sided adhesive tape, or any other technical.
- the shell already cut and shaped is placed in a mold, then the material is injected into the mold so as to form the cap.
- the material is injected into the mold so as to form the cap.
- polystyrene balls and water vapor under pressure are injected into the mold in such a way as to cause the polystyrene to expand and to form the cap directly against the shell.
- the helmet further comprises a retaining device on the user's head and, where appropriate, comfort elements.
- these means comprise a chinstrap formed with portions of strap connected to the cap which are intended to be hooked together under the chin of the user.
- the Figures 2 and 3 represent a helmet according to a first embodiment of the invention.
- This helmet has a shell 21 and a cap 22.
- the shell 21 is dressed externally by a yoke 23 which covers the rear part and the lower part of the shell 21.
- the openings 25, 26 which are in this area are disengaged.
- the yoke 23 is made here in two widths 23a, 23b which are assembled together so that the yoke follows the curvature of the hull in the covered area. The assembly means will be described later.
- the yoke is made of a flexible material such as a skin, a film or a fabric based on natural or synthetic fibers.
- the material can be colored, embroidered or patterned. It can also be printed, screen printed or painted.
- the patterns of the yoke can be coordinated with the decoration of the hull.
- the widths can be of the same nature or of different nature in terms of texture or color.
- the material has an extensible character so that it matches the rounded shape of the shell without wrinkling.
- the material is leather, or a leatherette which has the advantage of being flexible and compressible in the direction of the thickness, which gives a volume effect. Such material contrasts well with the appearance of the hull itself.
- Other materials are also suitable as a textile fabric, especially a jean cloth.
- the yoke could cover the entire hull, or it could include more or less two widths. On the other hand, it could be expected that there are several inserts placed at different locations on the hull.
- FIGS. 4 and 5 show a helmet 30 according to another embodiment of the invention.
- the shell 31 of the helmet is dressed with a yoke 33 which covers the upper part of the hull, leaving unobstructed the front part and the rear part.
- the yoke is here formed of five widths whose widths 33a, 33b, 33c, 33d which are visible in the figures. As previously the widths are assembled so that the yoke matches the rounded shape of the shell without forming folds. The yoke is cut at the vents of the helmet so as not to impede the flow of air between the outside and the inside.
- the material of the yoke is the same as that described for the previous helmet. As in the previous case, the yoke can cover the cap in a different way, and present a number of more or less important widths.
- a yoke comprises two transverse edges that extend from one hemisphere to the other of the shell, and connecting edges between these transverse edges.
- the yoke is assembled to the shell by at least one seam which is made along an edge.
- the edge in question is a transverse edge of the yoke. This edge is sewn to the hull in full surface or along one of its own edges.
- the yoke can be sewn or glued to the shell, or the edge of the yoke can be folded on itself and sewn and then glued to the shell like this will be described later.
- seams can also be made between the different widths of a yoke, by binding or without binding the shell and the yoke in this area.
- the seams can be made simply, for example using a conventional sewing machine such as those used in the field of footwear.
- a material such as polycarbonate or ABS easily withstands a needle and is well suited for sewing.
- the seams ensure a close fit of the yoke on the shell, they maintain a durable tension in the yoke that prevents the formation of creases.
- the seams guarantee an assembly that resists external aggression, including impacts or tears.
- the seams form lines on the surface of the shell and they print in the yoke a relief imprint that highlight its texture and contribute to make the aesthetics of the helmet more attractive.
- the yoke is irremovable, that is to say it can not be disassembled without deterioration, except where appropriate by an experienced person.
- the helmet There may be areas of the helmet where the wall of the shell forms a hollow. In these areas, the yoke tends to depart naturally from the hull wall. These areas can be glued prior to the application of the yoke on the shell and exert a support on the yoke so that it stretches locally and matches the shape of the shell in these areas of hollow.
- FIGS 6 to 21 illustrate different ways of mounting the connection between the yoke and the hull. They illustrate more particularly the mounting of the yoke 23 on the hull 21 of the first embodiment. To facilitate the understanding of the invention the references of Figures 2 and 3 will be included in these Figures 6 to 21 to designate the shell and the different widths of the yoke.
- the Figures 6 to 9 illustrate different modes of mounting the yoke in full surface of the hull.
- the upper transverse edge of the width 23b forms a hem whose flap is sewn to the shell 22 by a seam line 40.
- the seam line is not visible in this case.
- the edge of the width 23b forms a hem and the whole is sewn by a seam line 41.
- the flap of the hem is sewn to the shell 22 by a first seam line 43, then the whole is sewn to the shell by a second line 44.
- a hem is sewn by a seam line 45 and then the whole is glued to the shell by means of a glue strip 46.
- the seam is visible, but it does not bind the yoke to the shell.
- FIGS 10 to 14 illustrate the junction between the two widths 23a and 23b. According to figure 10 , the two widths are sewn edge to edge by a seam line 48 which is placed with the flaps on the side of the shell.
- the figure 12 shows the same type of assembly, but the sewing line 50 also binds the shell.
- both sides are sewn edge to edge by a seam line 52, then each flap is sewn by a line 53, 54.
- the two widths are sewn edge by edge by a line 55 and each edge of width is sewn to the shell by a seam line 56, 57 visible from the outside.
- the Figures 15 to 18 illustrate the mounting of the width 23a at the opening 26 of a vent.
- the width is cut and the edges of the cut are folded through the opening 26, inside the shell. They are sewn by a seam 60.
- the edges of the cut are passed through the cut, they are glued inside the shell by a band of glue 61.
- the yoke is cut to the razor of the opening 26 and its edges are glued by an adhesive strip 63.
- FIGS. 19 to 22 illustrate the mounting of an edge of the yoke along an edge of the shell 22.
- the rim of the yoke 23 is folded and glued inside the shell 22 by an adhesive strip 64.
- the edge is sewn by a seam line 65 which passes through the assembly and which is visible from the outside.
- the flap of the yoke 23 is folded between the yoke and the shell, and the assembly is sewn by a seam line 66.
- the yoke is then integrated completely into the structure of the helmet in terms of aesthetics.
- the mounting mode is chosen according to the material used to make the yoke, the shape of the widths and also the desired aesthetic effect. Other mounting modes may also be suitable.
- the shell of the helmet and the yoke is first made, these two elements are assembled, then the shell is filled with the cap according to one of the techniques mentioned above.
- the figure 22 illustrates this step of the process.
- a bare shell 68 On one side is prepared a bare shell 68.
- the shell is cut and shaped by any appropriate technique, including thermoforming. It has its final shape, with the possible openings for vents and break edges for recessed or raised areas.
- the yoke 69 On the other hand is prepared the yoke 69, with the appropriate if its different widths joined together.
- the openings for the vents can be made before or after assembly of the yoke on the shell.
- the yoke is then assembled to the shell along its different edges. Sewing is performed on at least one edge of the yoke. On the other edges, a seaming or gluing technique is used as described with reference to the preceding figures. At the level of openings it's the same thing.
- the cap is made apart and is assembled inside the shell by glue or adhesive, or any other appropriate hub.
- the shell is placed in an injection mold and material is injected into the mold to form the cap.
- material is injected into the mold to form the cap.
- the wall of the shell is pressed against the mold cavity, including in areas that are dressed by the yoke.
- the assembly of the yoke can be provided to glue these areas to enhance the adhesion with the shell.
- the injection can be used the same press and the same mold for helmets whose shell is dressed and helmets whose shell is bare. Indeed, the presence of the yoke does not change the establishment of the hull in the mold significantly.
- the first filling technique it can be provided to carry out these operations in a recovery press where the dressed shell of the yoke is compressed and optionally heated.
- the cap When the cap is put in place by injection inside the hull it traps all the flaps that are folded inside the hull, including in areas where the flaps were not linked to the hull.
- the figure 23 illustrates another embodiment of the invention.
- the yoke 70 is prepared, then it is assembled on the sheet 71 of thermoformable material from which the shell is made, for example with the aid of two seam lines 72 and 73 along each edge. cross section of the yoke.
- the other edges are glued, or they are intended to be folded inside the shell after shaping.
- the sheet coated yoke is shaped and then cut to form the shell dressed.
- the heat necessary for the shaping of the sheet may be used for example to melt a film of glue between the yoke and the shell which enhances the adhesion between the shell and the yoke.
- the helmet may be equipped with a retainer and comfort elements.
- the yoke could be made in two independent parts, or more.
Landscapes
- Helmets And Other Head Coverings (AREA)
Claims (10)
- Verfahren zur Herstellung eines Helms mit einer äußeren Schale (11, 21, 31, 68) von geringer Dicke und mit einer Stoß dämpfenden inneren Haube (12, 22, 32), dadurch gekennzeichnet, dass die äußere Schale verwirklicht wird, ein Einsatz (23, 33, 69) aus einem weichen Material verarbeitet wird, die äußere Schale mit dem Einsatz mittels zumindest einer Nahtlinie (40, 41, 44, 65, 66) entlang eines Rands des Einsatzes aufgelegt wird, und anschließend die Haube (12, 22, 32) durch Einspritzen in das Innere der Schale (11, 21, 31, 68), verwirklicht wird, die bereits durch den Einsatz (23, 33, 69) umhüllt ist.
- Herstellungsverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Schale durch eine Haube gebildet ist, die ausgehend von einer Blattebene verwirklicht ist, deren Dicke zwischen 0,7 und 1,5 mm liegt.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Nahtlinie (41, 44, 65, 66) außen sichtbar ist.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Einsatz (23, 33) aus mehreren Breiten (23a, 23b, 33a, 33b, 33c, 33d) gebildet ist.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass eine Nahtlinie (50, 56, 57) an der Verbindung der zwei Breiten den Einsatz mit der Schale verbindet.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die Breiten (23a, 23b) eine Textur und/oder verschiedene Färbungen aufweisen.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zumindest ein anderer Rand des Einsatzes mit der Schale durch eine Nahtlinie (40,41, 44, 65, 66) verbunden ist.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zumindest ein anderer Rand des Einsatzes mit der Schale durch ein Klebeband (46, 63, 64) verbunden ist.
- Verfahren nach einem der Ansprüche 1 oder 2, bei welchem die Schale Öffnungen (14, 15, 16, 25, 26) aufweist, um Belüftungslöcher zu bilden, dadurch gekennzeichnet, dass der Einsatz Ausschnitte aufweist, die mit den Öffnungen zusammenfallen.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das weiche Material ein Textilgewebe ist.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0607572A FR2905235B1 (fr) | 2006-08-29 | 2006-08-29 | Casque de protection et son procede de fabrication. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1894483A1 EP1894483A1 (de) | 2008-03-05 |
EP1894483B1 true EP1894483B1 (de) | 2009-10-28 |
Family
ID=37907037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07014881A Not-in-force EP1894483B1 (de) | 2006-08-29 | 2007-07-30 | Verfahren zur Herstellung eines Schutzhelmes |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080052808A1 (de) |
EP (1) | EP1894483B1 (de) |
AT (1) | ATE446691T1 (de) |
DE (2) | DE602007002957D1 (de) |
FR (1) | FR2905235B1 (de) |
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US514278A (en) * | 1894-02-06 | Sunshade for hats | ||
US857644A (en) * | 1907-01-19 | 1907-06-25 | Adolph Mayer | Hat. |
US1368864A (en) * | 1920-04-02 | 1921-02-15 | Turner Ella | Hat-protector |
US1483881A (en) * | 1922-01-11 | 1924-02-19 | Hart Henry Ridgeway | Football helmet |
US1539558A (en) * | 1922-03-27 | 1925-05-26 | P Goldsmith Sons Company | Athletic protective garment |
US1587681A (en) * | 1925-02-26 | 1926-06-08 | Ludwig F Schumacher | Sun and rain shield for hats |
US1831680A (en) * | 1930-05-14 | 1931-11-10 | Elsie F Miller | Hat protector |
US2339189A (en) * | 1941-05-07 | 1944-01-11 | Pickles Robert | Protective cover applicable to the rims of metal shrapnel helmets and the like |
US2880422A (en) * | 1956-01-18 | 1959-04-07 | Blauer Maurice | Combination raincoat pouch and garrison hat rain cover |
US3039108A (en) * | 1958-07-14 | 1962-06-19 | John W Lohrenz | Protective helmet |
US3103015A (en) * | 1962-02-01 | 1963-09-10 | Plastino Mario | Head-protecting head gear |
US3174155A (en) * | 1963-02-20 | 1965-03-23 | Dallas Sports Knitting Co Inc | Protective helmet having a padded outer surface |
US3445860A (en) * | 1967-04-17 | 1969-05-27 | Fred Rodell | Detachable cover for helmets and the like |
US3906546A (en) * | 1973-04-16 | 1975-09-23 | Elwyn R Gooding | Hand gun bullet proof protective headgear |
US4345336A (en) * | 1979-03-30 | 1982-08-24 | Plastino Mario A | Head protecting headwear |
FR2585239B1 (fr) * | 1985-07-24 | 1987-09-25 | Commissariat Energie Atomique | Calotte de protection pour boite cranienne et son procede de fabrication |
FR2680305A1 (fr) | 1991-08-13 | 1993-02-19 | Besset Martine | Couvre casque amovible et interchangeable. |
US5226180A (en) * | 1991-12-02 | 1993-07-13 | Leach Robert E | Protective cap for golfers |
US5519895A (en) * | 1993-04-28 | 1996-05-28 | Barnes, Jr.; Montie M. | Cap for sports helmet |
US5450631A (en) * | 1993-09-17 | 1995-09-19 | Specialized Bicycle Components, Inc. | Bicycle helmet |
DE746458T1 (de) * | 1994-03-04 | 1997-09-04 | Armacel Pty Ltd | Verfahren und vorrichtung zum herstellen von strukturierten gegenständen |
US5638544A (en) * | 1996-05-23 | 1997-06-17 | Ranger Joe's Columbus Army Surplus Co. | Military helmet with camouflage band retaining system and method for retaining a camouflage band on a military helmet |
US6070271A (en) * | 1996-07-26 | 2000-06-06 | Williams; Gilbert J. | Protective helmet |
CA2220631A1 (en) * | 1997-06-19 | 1998-12-19 | Normand Theoret | Safety cap with removable fabric cover |
US6061836A (en) * | 1998-10-28 | 2000-05-16 | Peters; Randall G. | Slip-on, elastic, fabric cover for hard hats and the like |
IT1312026B1 (it) * | 1999-03-19 | 2002-04-04 | New Max Srl | Procedimento per la realizzazione di un casco per motociclisti eprodotto cosi' realizzato. |
US6256799B1 (en) * | 1999-08-10 | 2001-07-10 | Mcglasson Shirley J. | Helmet covers |
US20010004773A1 (en) * | 1999-12-23 | 2001-06-28 | Toni Moore | Slip-on, insulating and decorative cover for bicycle safety helmets |
ITRM20010095U1 (it) | 2001-05-11 | 2002-11-11 | Manni Andrea | Copertura per casco. |
ITMI20020219U1 (it) * | 2002-04-29 | 2003-10-29 | Helcap S R L | Calottina copricasco in tessuto elasticizzato applicabile esternamente ai vari modelli di casco |
US20050028253A1 (en) * | 2003-08-07 | 2005-02-10 | Fowler David B. | Decorative protective helmet |
US6848122B1 (en) * | 2004-01-12 | 2005-02-01 | Joe Meeds | Decorative removable helmet cover for ski, showboard, skateboard and various types of helmets |
US20080222782A1 (en) * | 2005-08-05 | 2008-09-18 | Paul Michael Stokes | Decorative Removable Helmet Cover |
US7802321B2 (en) * | 2005-11-16 | 2010-09-28 | Janice Boyd | Motorcycle helmet cover |
US20080083053A1 (en) * | 2006-10-09 | 2008-04-10 | Lin Paul S | Hat and protective helmet |
US7752683B2 (en) * | 2007-09-18 | 2010-07-13 | Holloway Scott M | Helmet jacket |
US20100024097A1 (en) * | 2008-07-29 | 2010-02-04 | Peter Saenim | Protective Headgear System |
US7971278B2 (en) * | 2008-08-08 | 2011-07-05 | Klamerus Jr Richard | Hat cover and frame |
-
2006
- 2006-08-29 FR FR0607572A patent/FR2905235B1/fr not_active Expired - Fee Related
-
2007
- 2007-07-30 DE DE602007002957T patent/DE602007002957D1/de active Active
- 2007-07-30 EP EP07014881A patent/EP1894483B1/de not_active Not-in-force
- 2007-07-30 AT AT07014881T patent/ATE446691T1/de not_active IP Right Cessation
- 2007-08-28 DE DE202007011997U patent/DE202007011997U1/de not_active Expired - Lifetime
- 2007-08-28 US US11/846,302 patent/US20080052808A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1894483A1 (de) | 2008-03-05 |
FR2905235A1 (fr) | 2008-03-07 |
ATE446691T1 (de) | 2009-11-15 |
DE202007011997U1 (de) | 2007-11-29 |
US20080052808A1 (en) | 2008-03-06 |
FR2905235B1 (fr) | 2009-03-13 |
DE602007002957D1 (de) | 2009-12-10 |
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