WO2015140417A1 - Helmet with reinforced protection, especially for horse riding - Google Patents

Helmet with reinforced protection, especially for horse riding Download PDF

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Publication number
WO2015140417A1
WO2015140417A1 PCT/FR2014/000057 FR2014000057W WO2015140417A1 WO 2015140417 A1 WO2015140417 A1 WO 2015140417A1 FR 2014000057 W FR2014000057 W FR 2014000057W WO 2015140417 A1 WO2015140417 A1 WO 2015140417A1
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WO
WIPO (PCT)
Prior art keywords
helmet
outer shell
shell
helmet according
layer
Prior art date
Application number
PCT/FR2014/000057
Other languages
French (fr)
Inventor
Michel Finquel
Xavier Pillet
Original Assignee
Société Ufo
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.)
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Publication date
Application filed by Société Ufo filed Critical Société Ufo
Priority to PCT/FR2014/000057 priority Critical patent/WO2015140417A1/en
Publication of WO2015140417A1 publication Critical patent/WO2015140417A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/281—Air ducting systems

Definitions

  • the invention mainly relates to a helmet with increased impact protection.
  • the helmet of the invention can find application in the field of riding.
  • Riding helmets generally consist of an outer shell made of a material rigid enough to withstand shocks, and a lining, also called calotin, made of a softer material.
  • the rigid nature of the outer shell makes it possible more particularly to protect the user's skull from the risk of perforation in the event of a localized shock, for example when the helmet strikes a stone or any other object likely to perforate it.
  • the liner of softer material has a shock absorbing capacity to prevent the weight of the skull leading to crushing against the lining.
  • This lining is for this purpose generally made of expanded polystyrene.
  • the present invention relates to a helmet, in particular applied to riding, whose impact protection capabilities are improved over the previously described helmet of the prior art.
  • the helmet with reinforced protection of the invention is essentially characterized in that it comprises at least one rigid inner shell sandwiched between a layer of damping material and a liner whose inner face fits the skull of the user.
  • the helmet of the invention of the invention may also include the following optional features considered in isolation or in any possible technical combination:
  • the helmet has an outer shell in contact support against the layer of damping material.
  • the helmet comprises means for circulating air from the outer shell to the inner face of the lining, which air circulation means comprise at least one air inlet formed on the outer shell and a circulation opening. of air located on the inner shell and offset from the air inlet.
  • the helmet comprises a plurality of air inlets at the outer shell and a plurality of air circulation openings associated with the level of the inner shell, each of the air circulation openings being offset with respect to the air inlet; associated.
  • the outer and inner shells are made of thermoplastic polymer, and the outer shell has a thickness less than the thickness of the inner shell.
  • thermoplastic polymer constituting the outer and inner shells is acrylonitrile butadiene styrene, the thickness of the inner shell is approximately 2 millimeters and the thickness of the outer shell is approximately 1 millimeter.
  • the layer of damping material is made of ethylene-vinyl acetate foam.
  • the layer of damping material is made of polystyrene.
  • the helmet of the invention finds particular application in the field of riding.
  • FIG. 1 is a diagrammatic representation in longitudinal section of the helmet of the invention.
  • FIG. 2 is a schematic representation in elevation and partially in section of the helmet of the invention shown without the liner.
  • the invention essentially consists in providing that the upper layer of the helmet mainly confers resistance to shock absorption, and that the lower layer mainly confers resistance to the perforation of the helmet, unlike the helmet of the helmet. the prior art previously described.
  • the inventors have discovered that the significant alteration of a helmet during a shock does not go against its resistance capabilities due to the fact that this alteration contributes to the absorption of shock. This is why the helmet of the invention provides the presence of one or more damping layers located above a rigid shell comparable to the outer shell of the helmets of the prior art.
  • the term "damping" is used to denote a layer of a sufficiently flexible or elastic material that can be compressed by contributing to the absorption of the energy of a shock applied to its surface.
  • the helmet of the invention 1 comprises four successive layers, namely an outer shell 2, a layer made of a damping material 3, an inner shell 4 and a liner 5 whose inner face 6 is adapted to the skull of the user.
  • the helmet 1 also comprises a visor 7 fixed at the front portion of the helmet 1.
  • This standard requires the performance of damping and perforation resistance tests during which a false head is positioned in the helmet to be tested.
  • the puncture resistance test consists in releasing a 60 ° cone with a mass of 3 kg of 50 cm high on the helmet to be tested. The success of the test is identified by the fact that the tip does not reach the inner face 6 of the liner 5, thus illustrating the absence of contact with the skull in place in the helmet.
  • the damping resistance test consists in measuring the acceleration at the level of the false head during a shock given from the back of the helmet and during a shock given from one side of the helmet.
  • the nature of the shock is defined in the standard and varies according to the size of the helmet.
  • the results of each of these back and side tests are given in acceleration unit G, the norm obliging not to exceed the threshold of 250 G.
  • Table 1 presents the results of the damping resistance test applied to a helmet of the prior art and to two helmets of the invention.
  • Example 1 corresponds to a helmet of the prior art comprising an outer shell made of acrylonitrile butadiene styrene (ABS) about 2 millimeters thick, and an expanded polystyrene packing about 2 centimeters thick.
  • Example 2 corresponds to a helmet of the invention according to a first variant comprising an outer shell made of acrylonitrile butadiene styrene (ABS) with a thickness of about 2 millimeters, a damping material made of an ethylene-based foam.
  • vinyl acetate (EVA) an inner shell made of acrylonitrile butadiene styrene (ABS) approximately 2 millimeters thick, and an expanded polystyrene packing approximately 2 centimeters thick
  • Example 3 corresponds to a helmet of the invention according to a second variant comprising an outer shell made of acrylonitrile butadiene styrene (ABS) with a thickness of 1 millimeter, a damping material made of polystyrene with a thickness of 3 millimeters, an inner shell made of acrylonitrile butadiene styrene (ABS) 2 mm thick, and an expanded polystyrene gasket about 2 centimeters thick.
  • ABS acrylonitrile butadiene styrene
  • the helmet of the invention of Example 2 for which the outer shells 2 and inner 4 are identical has an improved result in terms of side impact, and a result noticeably worse for the rear impact.
  • the helmet of the invention is not limited to the materials and thicknesses described above.
  • the layer of damping material 3 can be increased, for example to four millimeters.
  • the outer shell 2 of Example 3 is more flexible than the inner shell 4 to be able, by deforming, absorb the energy of the shock by compressing the layer of damping material 3 to improve the damping performance shock.
  • softer is meant a lower resistance to deformation than that of the inner shell 4.
  • the outer shell 2 is made of an elastic material, for example an elastomer, and / or has a thickness lower than the inner shell 4.
  • the helmet of the invention is devoid of outer shell and has as an outer layer the layer of damping material 3 bearing contact against the inner shell 4.
  • the inner shell 4 is sandwiched between the layer of damping material 3 and the gasket 5.
  • the puncture resistance of the helmet of the invention is also improved due to the presence of the rigid inner shell 4 which is identical to the outer shell of the helmet of the prior art sufficiently strong to provide the necessary resistance to perforation.
  • the addition of the outer shell thus improves this type of performance.
  • the helmet 1 comprises air circulation means to prevent perspiration of the skull of the user, these means involve openings which may be localized sources of perforation deficiency.
  • the helmet of the invention allows, in a second aspect, to overcome this disadvantage.
  • the helmet of the invention comprises four air inlets 2a, 2b, 2c, 2d made on the outer shell 2. These air inlets are connected, by unrepresented traffic channels, to four air circulation openings 4a, 4b, 4c, 4d made on the inner shell 3.
  • the air circulation openings 4a, 4b, 4c, 4d are arranged so that offset from the air inlets 2a, 2b, 2c, 2d. In other words, no air circulation opening 4a, 4b, 4c, 4d is located opposite an air inlet 2a, 2b, 2c, 2d.
  • the corresponding openings made in the layer of damping material 3 are however arranged facing the air circulation openings 4a, 4b, 4c, 4d of the inner shell 4.
  • the helmet of the invention is not limited to use in the field of riding, but can be used in any other field including motorcycle helmets and bike.

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  • Helmets And Other Head Coverings (AREA)

Abstract

The invention relates mainly to a helmet with reinforced protection, said helmet being essentially characterised in that it comprises at least one rigid inner shell (4) inserted between a layer of impact-absorbing material (3) and a lining (5) having an inner face (6) that fits to the skull of the user. The helmet according to the invention preferably comprises an outer shell (2) applied to the layer of impact-absorbing material (3) such that it is in contact therewith. Advantageously, the outer shell (2) is more flexible than the inner shell (4).

Description

Casque à protection renforcée, notamment pour l'équitation.  Helmet with reinforced protection, especially for riding.
L'invention concerne principalement un casque à protection renforcée aux chocs. The invention mainly relates to a helmet with increased impact protection.
Le casque de l'invention peut trouver application dans le domaine de l'équitation.  The helmet of the invention can find application in the field of riding.
Les casques d'équitation sont généralement constitués d'une coque externe réalisée en un matériau suffisamment rigide pour résister aux chocs, et d'une garniture, aussi dénommée calotin, réalisée en un matériau plus souple.  Riding helmets generally consist of an outer shell made of a material rigid enough to withstand shocks, and a lining, also called calotin, made of a softer material.
Le caractère rigide de la coque externe permet plus particulièrement de protéger le crâne de l'utilisateur du risque de perforation en cas de choc localisé, par exemple lorsque le casque heurte une pierre ou tout autre objet susceptible de le perforer.  The rigid nature of the outer shell makes it possible more particularly to protect the user's skull from the risk of perforation in the event of a localized shock, for example when the helmet strikes a stone or any other object likely to perforate it.
La garniture en matériau plus souple présente quant à elle une capacité d'amortissement du choc pour éviter que le poids du crâne conduise à son écrasement contre la garniture. Cette garniture est à cet effet généralement réalisée en polystyrène expansé.  The liner of softer material has a shock absorbing capacity to prevent the weight of the skull leading to crushing against the lining. This lining is for this purpose generally made of expanded polystyrene.
Il arrive néanmoins fréquemment que lors d'une chute, la coque externe se casse, l'utilisateur doutant alors des capacités protectrices du dit casque.  However, it frequently happens that during a fall, the outer shell breaks, the user then doubts the protective capabilities of said helmet.
Dans ce contexte, la présente invention vise un casque, notamment appliqué à l'équitation, dont les capacités de protection au choc sont améliorées par rapport au casque précédemment décrit de l'art antérieur.  In this context, the present invention relates to a helmet, in particular applied to riding, whose impact protection capabilities are improved over the previously described helmet of the prior art.
A cet effet, le casque à protection renforcée de l'invention est essentiellement caractérisé en ce qu'il comporte au moins une coque interne rigide prise en sandwich entre une couche de matériau amortissant et une garniture dont la face interne s'adapte au crâne de l'utilisateur.  For this purpose, the helmet with reinforced protection of the invention is essentially characterized in that it comprises at least one rigid inner shell sandwiched between a layer of damping material and a liner whose inner face fits the skull of the user.
Le casque de l'invention de l'invention peut également comporter les caractéristiques optionnelles suivantes considérées isolément ou selon toutes les combinaisons techniques possibles :  The helmet of the invention of the invention may also include the following optional features considered in isolation or in any possible technical combination:
- le casque comporte une coque externe en appui de contact contre la couche de matériau amortissant.  - The helmet has an outer shell in contact support against the layer of damping material.
- la coque externe est plus souple que la coque interne - le casque comporte des moyens de circulation d'air depuis la coque externe jusqu'à la face interne de la garniture, lesquels moyens de circulation d'air comprennent au moins une entrée d'air ménagée sur la coque externe et une ouverture de circulation d'air située sur la coque interne et décalée par rapport à l'entrée d'air. - the outer shell is softer than the inner shell the helmet comprises means for circulating air from the outer shell to the inner face of the lining, which air circulation means comprise at least one air inlet formed on the outer shell and a circulation opening. of air located on the inner shell and offset from the air inlet.
- le casque comporte plusieurs entrées d'air au niveau de la coque externe et plusieurs ouvertures de circulation d'air associées au niveau de la coque interne, chacune des ouvertures de circulation d'air étant décalée par rapport à l'entrée d'air associée.  the helmet comprises a plurality of air inlets at the outer shell and a plurality of air circulation openings associated with the level of the inner shell, each of the air circulation openings being offset with respect to the air inlet; associated.
- les coques externe et interne sont réalisées en polymère thermoplastique, et la coque externe présente une épaisseur inférieure à l'épaisseur de la coque interne.  - The outer and inner shells are made of thermoplastic polymer, and the outer shell has a thickness less than the thickness of the inner shell.
- le polymère thermoplastique constitutif des coques externe et interne est l'acrylonitrile butadiène styrène, l'épaisseur de la coque interne est d'environ de 2 millimètres et l'épaisseur de la coque externe est d'environ de 1 millimètre.  the thermoplastic polymer constituting the outer and inner shells is acrylonitrile butadiene styrene, the thickness of the inner shell is approximately 2 millimeters and the thickness of the outer shell is approximately 1 millimeter.
- la couche de matériau amortissant est réalisée en mousse d'éthylène - acétate de vinyle.  the layer of damping material is made of ethylene-vinyl acetate foam.
- la couche de matériau amortissant est réalisée en polystyrène.  the layer of damping material is made of polystyrene.
Enfin, le casque de l'invention trouve notamment application dans le domaine de l'équitation.  Finally, the helmet of the invention finds particular application in the field of riding.
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est donnée ci-dessous, à titre indicatif et nullement limitatif, en référence aux figures annexées parmi lesquelles :  Other features and advantages of the invention will emerge clearly from the description which is given below, by way of indication and in no way limitative, with reference to the appended figures among which:
- la figure 1 est une représentation schématique en coupe longitudinale du casque de l'invention, et  FIG. 1 is a diagrammatic representation in longitudinal section of the helmet of the invention, and
- la figure 2 est une représentation schématique en élévation et partiellement en coupe du casque de l'invention illustré sans la garniture.  - Figure 2 is a schematic representation in elevation and partially in section of the helmet of the invention shown without the liner.
L'invention consiste essentiellement à prévoir que la couche supérieure du casque confère principalement une résistance à l'amortissement d'un choc, et que la couche inférieure confère principalement une résistance à la perforation du casque et ce, à l'inverse du casque de l'art antérieur précédemment décrit.  The invention essentially consists in providing that the upper layer of the helmet mainly confers resistance to shock absorption, and that the lower layer mainly confers resistance to the perforation of the helmet, unlike the helmet of the helmet. the prior art previously described.
En effet, les inventeurs ont découverts que l'altération significative d'un casque lors d'un choc ne va pas à encontre de ses capacités de résistance en raison du fait que cette altération contribue à l'absorption du choc. C'est pourquoi le casque de l'invention prévoit la présence d'une ou de plusieurs couches amortissantes situées au-dessus d'une coque rigide comparable à la coque externe des casques de l'art antérieur. Indeed, the inventors have discovered that the significant alteration of a helmet during a shock does not go against its resistance capabilities due to the fact that this alteration contributes to the absorption of shock. This is why the helmet of the invention provides the presence of one or more damping layers located above a rigid shell comparable to the outer shell of the helmets of the prior art.
Dans la description qui suit, le terme « amortissant » est employé pour désigner une couche constituée d'un matériau suffisamment souple ou élastique pouvant être comprimée en contribuant à l'absorption de l'énergie d'un choc appliqué sur sa surface.  In the following description, the term "damping" is used to denote a layer of a sufficiently flexible or elastic material that can be compressed by contributing to the absorption of the energy of a shock applied to its surface.
En référence à la figure 1 , le casque de l'invention 1 comporte quatre couches successives à savoir une coque externe 2, une couche réalisée en un matériau amortissant 3, une coque interne 4 et une garniture 5 dont la face interne 6 est adaptée au crâne de l'utilisateur.  With reference to FIG. 1, the helmet of the invention 1 comprises four successive layers, namely an outer shell 2, a layer made of a damping material 3, an inner shell 4 and a liner 5 whose inner face 6 is adapted to the skull of the user.
Chacune de ces quatre couches de protection 2,3,4,5 est en appui de contact contre la ou les couches adjacentes de sorte que la couche de matériau amortissant 3 est prise en sandwich entre la coque externe 2 et la coque interne 4, et que la coque interne 4 est prise en sandwich entre la couche de matériau amortissant 3 et la garniture 5. Le casque 1 comporte également une visière 7 fixée au niveau de la partie avant du casque 1.  Each of these four protective layers 2,3,4,5 is in contact abutment against the adjacent layer or layers so that the layer of damping material 3 is sandwiched between the outer shell 2 and the inner shell 4, and that the inner shell 4 is sandwiched between the layer of damping material 3 and the lining 5. The helmet 1 also comprises a visor 7 fixed at the front portion of the helmet 1.
Les casques, quel que soit leur domaine d'application, doivent répondre à des normes de sécurité. Pour ce qui est des casques d'équitation, la norme qui s'applique est la norme EN 1384.  Helmets, whatever their field of application, must meet safety standards. With respect to riding helmets, the standard that applies is EN 1384.
Cette norme nécessite la réalisation de tests de résistance à l'amortissement et à la perforation au cours desquels une fausse tête est positionnée dans le casque à tester.  This standard requires the performance of damping and perforation resistance tests during which a false head is positioned in the helmet to be tested.
Le test de résistance à la perforation consiste à lâcher un cône de 60° d'une masse de 3 kg de 50 centimètres de haut sur le casque à tester. La réussite du test s'identifie par le fait que la pointe n'atteint pas la face interne 6 de la garniture 5, illustrant ainsi l'absence de contact avec le crâne en place dans le casque.  The puncture resistance test consists in releasing a 60 ° cone with a mass of 3 kg of 50 cm high on the helmet to be tested. The success of the test is identified by the fact that the tip does not reach the inner face 6 of the liner 5, thus illustrating the absence of contact with the skull in place in the helmet.
Le test de résistance à l'amortissement consiste à mesurer l'accélération au niveau de la fausse tête lors d'un choc donné depuis l'arrière du casque et lors d'un choc donné depuis un coté du casque. La nature du choc est définie dans la norme et varie selon la taille du casque. Les résultats de chacun de ces tests arrière et latéral sont donnés en unité d'accélération G, la norme obligeant à ne pas dépasser le seuil des 250 G. Le Tableau 1 présente les résultats du test de résistance à l'amortissement appliqué à un casque de l'art antérieur et à deux casques de l'invention. The damping resistance test consists in measuring the acceleration at the level of the false head during a shock given from the back of the helmet and during a shock given from one side of the helmet. The nature of the shock is defined in the standard and varies according to the size of the helmet. The results of each of these back and side tests are given in acceleration unit G, the norm obliging not to exceed the threshold of 250 G. Table 1 presents the results of the damping resistance test applied to a helmet of the prior art and to two helmets of the invention.
L'exemple 1 correspond à un casque de l'art antérieur comportant une coque externe faite en acrylonitrile butadiène styrène (ABS) d'épaisseur d'environ de 2 millimètres, et une garniture en polystyrène expansé d'épaisseur d'environ 2 centimètres. L'exemple 2 correspond à un casque de l'invention selon une première variante comportant une coque externe faite en acrylonitrile butadiène styrène (ABS) d'épaisseur d'environ de 2 millimètres, un matériau amortissant fait d'une mousse d'éthylène-acétate de vinyle (EVA), d'une coque interne faite en acrylonitrile butadiène styrène (ABS) d'épaisseur d'environ de 2 millimètres, et d'une garniture en polystyrène expansé d'épaisseur d'environ de 2 centimètres Example 1 corresponds to a helmet of the prior art comprising an outer shell made of acrylonitrile butadiene styrene (ABS) about 2 millimeters thick, and an expanded polystyrene packing about 2 centimeters thick. Example 2 corresponds to a helmet of the invention according to a first variant comprising an outer shell made of acrylonitrile butadiene styrene (ABS) with a thickness of about 2 millimeters, a damping material made of an ethylene-based foam. vinyl acetate (EVA), an inner shell made of acrylonitrile butadiene styrene (ABS) approximately 2 millimeters thick, and an expanded polystyrene packing approximately 2 centimeters thick
L'exemple 3 correspond à un casque de l'invention selon une seconde variante comportant une coque externe faite en acrylonitrile butadiène styrène (ABS) d'épaisseur de 1 millimètre, un matériau amortissant fait de polystyrène d'épaisseur de 3 millimètre, d'une coque interne faite en acrylonitrile butadiène styrène (ABS) d'épaisseur de 2 millimètres, et d'une garniture en polystyrène expansé d'épaisseur d'environ de 2 centimètres. Example 3 corresponds to a helmet of the invention according to a second variant comprising an outer shell made of acrylonitrile butadiene styrene (ABS) with a thickness of 1 millimeter, a damping material made of polystyrene with a thickness of 3 millimeters, an inner shell made of acrylonitrile butadiene styrene (ABS) 2 mm thick, and an expanded polystyrene gasket about 2 centimeters thick.
Figure imgf000006_0001
Figure imgf000006_0001
d'amortissement  depreciation
On constate que comparé au casque de l'art antérieur, le casque de l'invention de l'exemple 2 pour lequel les coques externe 2 et interne 4 sont identiques, présente un résultat amélioré pour ce qui est du choc latéral, et un résultat sensiblement moins bon pour le choc arrière. It is found that compared to the helmet of the prior art, the helmet of the invention of Example 2 for which the outer shells 2 and inner 4 are identical, has an improved result in terms of side impact, and a result noticeably worse for the rear impact.
Par ailleurs, pour un casque dont la coque externe 2 est plus souple que la coque interne 4, les résultats sont meilleurs tant en choc latéral qu'en choc arrière, avec une très nette amélioration en choc arrière.  Moreover, for a helmet whose outer shell 2 is softer than the inner shell 4, the results are better in both side impact and rear impact, with a marked improvement in rear impact.
Le casque de l'invention ne se limite pas aux matériaux ni aux épaisseurs précédemment décrits. Notamment, la couche de matériau amortissant 3 peut être augmentée, par exemple à quatre millimètres. The helmet of the invention is not limited to the materials and thicknesses described above. In particular, the layer of damping material 3 can be increased, for example to four millimeters.
En outre, la coque externe 2 de l'exemple 3 est plus souple que la coque interne 4 pour pouvoir, en se déformant, absorber l'énergie du choc en comprimant la couche de matériau amortissant 3 afin d'améliorer les performances d'amortissement du choc. On entend par « plus souple » une résistance à la déformation inférieure à celle de la coque interne 4. On peut prévoir à cet effet que la coque externe 2 soit réalisée en un matériau élastique, par exemple un élastomère, et/ou présente une épaisseur inférieure à la coque interne 4.  In addition, the outer shell 2 of Example 3 is more flexible than the inner shell 4 to be able, by deforming, absorb the energy of the shock by compressing the layer of damping material 3 to improve the damping performance shock. By "softer" is meant a lower resistance to deformation than that of the inner shell 4. It can be provided for this purpose that the outer shell 2 is made of an elastic material, for example an elastomer, and / or has a thickness lower than the inner shell 4.
Mais on peut également prévoir que le casque de l'invention soit dépourvu de coque externe et présente comme couche externe la couche de matériau amortissant 3 en appui de contact contre la coque interne 4. Dans cette hypothèse, la coque interne 4 est prise en sandwich entre la couche de matériau amortissant 3 et la garniture 5.  But it can also be provided that the helmet of the invention is devoid of outer shell and has as an outer layer the layer of damping material 3 bearing contact against the inner shell 4. In this case, the inner shell 4 is sandwiched between the layer of damping material 3 and the gasket 5.
La résistance à la perforation du casque de l'invention est également améliorée en raison de la présence de la coque interne rigide 4 qui est identique à la coque externe du casque de l'art antérieur suffisamment solide pour assurer cette résistance nécessaire à la perforation. L'ajout de la coque externe vient ainsi améliorer ce type de performances.  The puncture resistance of the helmet of the invention is also improved due to the presence of the rigid inner shell 4 which is identical to the outer shell of the helmet of the prior art sufficiently strong to provide the necessary resistance to perforation. The addition of the outer shell thus improves this type of performance.
En revanche, lorsque le casque 1 comporte des moyens de circulation d'air pour éviter la transpiration du crâne de l'utilisateur, ces moyens mettent en jeu des ouvertures qui peuvent être des sources localisées de déficience à la perforation.  On the other hand, when the helmet 1 comprises air circulation means to prevent perspiration of the skull of the user, these means involve openings which may be localized sources of perforation deficiency.
Le casque de l'invention permet, selon un second aspect, de pallier cet inconvénient.  The helmet of the invention allows, in a second aspect, to overcome this disadvantage.
Sur les figures 1 et 2, seules les ouvertures de circulation d'air sont représentées. Les canaux de circulation d'air reliant les différentes ouvertures et ménagés dans les différentes couches du casque sont adaptés facilement par l'homme de l'art.  In Figures 1 and 2, only the air circulation openings are shown. The air circulation channels connecting the different openings and arranged in the different layers of the helmet are easily adapted by those skilled in the art.
En référence à la figure 2, le casque de l'invention comporte quatre entrées d'air 2a,2b,2c,2d réalisées sur la coque externe 2. Ces entrées d'air sont reliées, par des canaux de circulation non représentés, à quatre ouvertures de circulation d'air 4a,4b,4c,4d réalisées sur la coque interne 3. Pour éviter la perforation du casque par l'introduction d'un l'objet tranchant au niveau des entrées d'air 2a,2b,2c,2d, les ouvertures de circulation d'air 4a,4b,4c,4d sont disposées de façon décalée par rapport aux entrées d'air 2a,2b,2c,2d. Autrement dit, aucune ouverture de circulation d'air 4a,4b,4c,4d n'est située en regard d'une entrée d'air 2a,2b,2c,2d. With reference to FIG. 2, the helmet of the invention comprises four air inlets 2a, 2b, 2c, 2d made on the outer shell 2. These air inlets are connected, by unrepresented traffic channels, to four air circulation openings 4a, 4b, 4c, 4d made on the inner shell 3. To prevent the perforation of the helmet by the introduction of a sharp object at the air inlets 2a, 2b, 2c, 2d, the air circulation openings 4a, 4b, 4c, 4d are arranged so that offset from the air inlets 2a, 2b, 2c, 2d. In other words, no air circulation opening 4a, 4b, 4c, 4d is located opposite an air inlet 2a, 2b, 2c, 2d.
Les ouvertures correspondantes réalisées dans la couche de matériau amortissant 3 sont en revanche disposées en regard des ouvertures de circulation d'air 4a,4b,4c,4d de la coque interne 4.  The corresponding openings made in the layer of damping material 3 are however arranged facing the air circulation openings 4a, 4b, 4c, 4d of the inner shell 4.
Le casque de l'invention ne se limite pas à une utilisation dans le domaine de l'équitation, mais peut être utilisé dans tout autre domaine notamment pour les casques de moto et de vélo.  The helmet of the invention is not limited to use in the field of riding, but can be used in any other field including motorcycle helmets and bike.

Claims

REVENDICATIONS
1. Casque à protection renforcée, caractérisé en ce qu'il comporte au moins une coque interne rigide (4) prise en sandwich entre une couche de matériau amortissant (3) et une garniture (5) dont la face interne (6) s'adapte au crâne de l'utilisateur. 1. helmet with reinforced protection, characterized in that it comprises at least one rigid inner shell (4) sandwiched between a layer of damping material (3) and a lining (5) whose inner face (6) s' fits the skull of the user.
2. Casque selon la revendication 1 , caractérisé en ce qu'il comporte une coque externe (2) en appui de contact contre la couche de matériau amortissant (3). 2. Helmet according to claim 1, characterized in that it comprises an outer shell (2) bearing against the contact layer of damping material (3).
3. Casque selon la revendication 2, caractérisé en ce que la coque externe (2) est plus souple que la coque interne (4). 3. Helmet according to claim 2, characterized in that the outer shell (2) is softer than the inner shell (4).
4. Casque selon l'une quelconque des revendications 2 et 3, caractérisé en ce qu'il comporte des moyens de circulation d'air depuis la coque externe (2) jusqu'à la face interne de la garniture (5), lesquels moyens de circulation d'air comprennent au moins une entrée d'air (2a,2b,2c,2d) ménagée sur la coque externe (2) et une ouverture de circulation d'air (4a,4b,4c,4d) située sur la coque interne (4) et décalée par rapport à l'entrée d'air (2a,2b,2c,2d). 4. Helmet according to any one of claims 2 and 3, characterized in that it comprises air circulation means from the outer shell (2) to the inner face of the liner (5), which means of air circulation comprise at least one air inlet (2a, 2b, 2c, 2d) provided on the outer shell (2) and an air circulation opening (4a, 4b, 4c, 4d) located on the inner shell (4) and offset from the air inlet (2a, 2b, 2c, 2d).
5. Casque selon la revendication 4, caractérisé en ce que qu'il comporte plusieurs entrées d'air (2a,2b,2c,2d) au niveau de la coque externe (2) et plusieurs ouvertures de circulation d'air associées (4a,4b,4c,4d) au niveau de la coque interne (4), chacune des ouvertures de circulation d'air (4a,4b,4c,4d) étant décalée par rapport à l'entrée d'air associée (2a,2b,2c,2d). Helmet according to claim 4, characterized in that it comprises a plurality of air inlets (2a, 2b, 2c, 2d) at the outer shell (2) and a plurality of associated air circulation openings (4a). , 4b, 4c, 4d) at the inner shell (4), each of the airflow openings (4a, 4b, 4c, 4d) being offset from the associated air inlet (2a, 2b 2c, 2d).
6. Casque selon l'une quelconque des revendications 2 à 5, caractérisé en ce que les coques externe (2) et interne (4) sont réalisées en polymère thermoplastique, et en ce que la coque externe (2) présente une épaisseur inférieure à l'épaisseur de la coque interne (4). 6. Helmet according to any one of claims 2 to 5, characterized in that the outer shell (2) and inner shell (4) are made of thermoplastic polymer, and in that the outer shell (2) has a thickness less than the thickness of the inner shell (4).
7. Casque selon la revendication 6, caractérisé en ce que le polymère thermoplastique constitutif des coques externe (2) et interne (4) est l'acrylonitrile butadiène styrène, en ce que l'épaisseur de la coque interne (4) est d'environ de 2 millimètres et en ce que l'épaisseur de la coque externe (2) est d'environ de 1 millimètre. 7. Helmet according to claim 6, characterized in that the thermoplastic polymer constituting the outer shell (2) and inner (4) is acrylonitrile butadiene styrene, in that the thickness of the inner shell (4) is about 2 millimeters and in that the thickness of the outer shell (2) is about 1 millimeter.
8. Casque selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche de matériau amortissant (3) est réalisée en mousse d'éthylène - acétate de vinyle. 8. Helmet according to any one of the preceding claims, characterized in that the layer of damping material (3) is made of ethylene-vinyl acetate foam.
9. Casque selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche de matériau amortissant (3) est réalisée en polystyrène. 9. Helmet according to any one of the preceding claims, characterized in that the layer of damping material (3) is made of polystyrene.
10. Utilisation du casque selon l'une quelconque des revendications 1 à 9 comme casque d'équitation. 10. Use of the helmet according to any one of claims 1 to 9 as a riding helmet.
PCT/FR2014/000057 2014-03-17 2014-03-17 Helmet with reinforced protection, especially for horse riding WO2015140417A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FR2014/000057 WO2015140417A1 (en) 2014-03-17 2014-03-17 Helmet with reinforced protection, especially for horse riding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2014/000057 WO2015140417A1 (en) 2014-03-17 2014-03-17 Helmet with reinforced protection, especially for horse riding

Publications (1)

Publication Number Publication Date
WO2015140417A1 true WO2015140417A1 (en) 2015-09-24

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Application Number Title Priority Date Filing Date
PCT/FR2014/000057 WO2015140417A1 (en) 2014-03-17 2014-03-17 Helmet with reinforced protection, especially for horse riding

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Country Link
WO (1) WO2015140417A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616463A (en) * 1970-07-06 1971-11-02 Mine Safety Appliances Co Shock absorbing helmet
FR2340066A1 (en) * 1976-02-09 1977-09-02 Sl France Protective helmet of foamed polyurethane between two rigid shells - which are connected only by the plastic foam
DE8120605U1 (en) * 1981-07-14 1981-10-01 Uvex Winter Optik GmbH, 8510 Fürth Hard hat
EP1219189A1 (en) * 2000-12-26 2002-07-03 Heaume Activites S.A. Riding helmet with an air circulation
US6446270B1 (en) * 1996-03-13 2002-09-10 Nicole Durr Sports helmet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616463A (en) * 1970-07-06 1971-11-02 Mine Safety Appliances Co Shock absorbing helmet
FR2340066A1 (en) * 1976-02-09 1977-09-02 Sl France Protective helmet of foamed polyurethane between two rigid shells - which are connected only by the plastic foam
DE8120605U1 (en) * 1981-07-14 1981-10-01 Uvex Winter Optik GmbH, 8510 Fürth Hard hat
US6446270B1 (en) * 1996-03-13 2002-09-10 Nicole Durr Sports helmet
EP1219189A1 (en) * 2000-12-26 2002-07-03 Heaume Activites S.A. Riding helmet with an air circulation

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