EP3165108B1 - Neck strap connector with variable breaking - Google Patents

Neck strap connector with variable breaking Download PDF

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Publication number
EP3165108B1
EP3165108B1 EP16194442.6A EP16194442A EP3165108B1 EP 3165108 B1 EP3165108 B1 EP 3165108B1 EP 16194442 A EP16194442 A EP 16194442A EP 3165108 B1 EP3165108 B1 EP 3165108B1
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EP
European Patent Office
Prior art keywords
connector
parts
protective helmet
strap
movable
Prior art date
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Active
Application number
EP16194442.6A
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German (de)
French (fr)
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EP3165108A1 (en
Inventor
Antoine Coursimault
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Zedel SAS
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Zedel SAS
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Publication of EP3165108A1 publication Critical patent/EP3165108A1/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
    • A42B3/08—Chin straps or similar retention devices
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42C—MANUFACTURING OR TRIMMING HEAD COVERINGS, e.g. HATS
    • A42C2/00—Manufacturing helmets by processes not otherwise provided for
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2569—Safety measures

Definitions

  • the invention relates to a jugular strap connector with variable breaking, and a protective helmet provided with at least one such connector.
  • a protective helmet in the context of a professional activity, must be able to be detached from the head of the user if a tensile force greater than a certain threshold is exerted on the cap of the helmet. For example, it could happen that a pruner is hanged by his helmet if it is hooked to a tree branch and he can not pick it up. The jugular strap could therefore strangle the wearer of the helmet.
  • the helmet must meet stringent safety requirements.
  • the jugular strap must be able to disengage the cap if it is subjected to a tensile force greater than a certain threshold. The user's head is then released and the user can no longer be strangled by the chin strap.
  • this safety rule is governed by the EN 397 standard, which requires the manufacturer to manufacture protective helmets comprising at least one anchor point of the chinstrap on the cap which are configured to break when the chin strap is subjected to a tensile force of between 150 and 250 Newtons.
  • the main danger for the user is falling rocks. It is therefore fundamental that the protective helmet resists shocks and that the jugular strap remains attached to the cap so that the user remains properly protected.
  • a protective helmet used for a sports activity must meet the EN 12492 standard. This standard requires that the fastening system of the chinstrap on the cap may experience a tensile force of at least 500 Newtons without damage to the helmet. protection.
  • connection element may comprise an independent part having a first end and a second end opposite the first end, the first end being connected to the first part and the second end being connected to the second part.
  • connection element can be configured to allow the separation of the first and second parts by breaking the connection element when the movable element is in the second position.
  • connection element can be partially positioned in a housing of the first piece, and cooperates with clipping means placed on the second piece, so as to form the first mechanical connection.
  • the movable member may be configured to form an additional mechanical connection between the first piece and the second piece when placed in the first position.
  • the movable element may for example cooperate with a stud placed on the connector.
  • the movable member may further be rotatably mounted.
  • the connector may comprise a closure element for closing a strap of a protective helmet and / or adjust its length.
  • the invention also relates to a protective helmet comprising a cap, a jugular strap and at least one connector having the aforementioned technical characteristics.
  • the first threshold pulling force exerted on the chinstrap may be greater than 500 N
  • the second threshold tractive force exerted on the chinstrap may be between 150 and 250 N, this traction force being applied between the helmet and the chinstrap.
  • the first piece of at least one of the connectors can be connected to the cap by means of an additional strap and the second piece of said connector can be connected to the jugular strap.
  • the first piece of at least one of the connectors can be connected to the jugular strap, and the second piece of said connector can be connected to the cap.
  • a connector 1 it comprises a first part 2, a second part 3, a connection element 4, and a movable element 5.
  • the first part 2 comprises an attachment zone 2a intended to be fixed directly or indirectly to a protective helmet cap, and is for example intended to accommodate at least one strap, as will be seen later.
  • the second piece 3 also comprises one or two attachment zones 3a intended to be fixed directly or indirectly to the cap of the helmet and intended for example to cooperate with one or two straps.
  • the attachment zones 2a and 3a advantageously have the shape of a slot to facilitate the connection with a strap.
  • the longitudinal axis of the connector 1 is defined as the axis of the strap housed in the attachment zone 2a. It is represented by the AA axis on Figures 2 to 4 .
  • the first and second parts 2 and 3 are removably mounted relative to each other, they can be assembled and disassembled without rupture.
  • a part of the first part 2 slides inside a cavity of the second part 3 and / or part of the second part 3 slides inside a cavity of the first part 2. This sliding assembly makes it easier to define the forces to be applied to the connection element 4.
  • the first and second parts 2 and 3 are mechanically connected by means of the connection element 4, so as to prevent the separation of the first and second parts.
  • the first part 2 comprises two slots 2b located along the longitudinal axis, and defining a central portion 2c.
  • the second piece 3 comprises a base 3b on which there is a housing 3c.
  • the central portion 2c of the first piece 2 and the housing 3c of the second piece 3 have dimensions adapted to allow their interlocking into one another, the side walls of the housing 3c sliding in the slots 2b.
  • An alternative embodiment in which the first part 2 has more than two slots 2b is also conceivable.
  • connection element 4 makes it possible to mechanically connect the first part 2 and the second part 3. It can comprise an independent part of the first and second parts 2 and 3. This part has for example the shape of an H, but other suitable forms are also possible, a circle, a square, a rectangle.
  • the connecting element 4 is used as a tensile specimen, that is to say it forms a first mechanical connection between the parts 2 and 3 until the part is broken under the effect of a pulling force (cf. Fig. 5 ).
  • the connection element 4 is therefore a fuse piece that can be replaced in the event of a failure of the connector 1.
  • the break of the connection element 4 makes it possible to rapidly detect the stress on the connector beyond a threshold value.
  • a system may be provided so that the connecting element 4 is released by the first or the second part when a threshold traction force is reached without the connection element 4 being broken.
  • connection element 4 can be an integral part of one of the first or second parts 2 or 3, in which case the whole of the part must be replaced in case a break.
  • connection element 4 is an independent part.
  • a first end 4a of the connection element 4 is placed in a housing 2d located on the central part 2c of the first part 2.
  • the shape of the housing 2d is advantageously complementary to the shape of the end of the connection element 4, so that the latter is held fixed along the longitudinal axis.
  • the connection element 4 is placed inside the housing 3c.
  • the latter comprises clipping means 3d intended to cooperate with the connection element 4 in order to make a first mechanical connection between the first and second parts (cf. Fig. 4 ).
  • connection element 4 may be replaced by a ramp ending in a flat forming a fixing zone.
  • the connection element 4 ascends the ramp without a major effort being provided.
  • the connection element 4 then falls into the fixing zone where a much greater force will have to be applied to remove it from the fixing zone or to cause the breaking of the connection element 4.
  • coupling means which require a first effort to initiate the coupling by moving the connection element 4 in a first direction, and a second force greater than the first force to eliminate this coupling. attempting to move the connecting member 4 in a second direction opposite to the first direction.
  • connection element 4 is for example mounted on the first part 2 or the second part 3. When sliding the first part 2 in the second part 3 or the second part 3 in the first part 2, the mechanical connection is created by means of the connection element 4.
  • the clipping means correspond to 3d hooked fingers belonging to the side walls of the housing 3c.
  • This embodiment has the advantage of being particularly compact and efficient.
  • connection element 4 When the central part 2c provided with the connecting element 4 is introduced into the housing 3c of the second part, the connecting element 4 pushes on the hooked fingers 3d until the second end 4b of the element connection 4 exceeds them. The connection element 4 then forms the first mechanical connection between the first and second parts 2 and 3. It is impossible to remove the central portion 2c of the housing 3c in breaking the connection element 4 (cf. Fig. 4 and 5 ).
  • the aforementioned coupling means may not be used. It is necessary in this case to disassemble the connector to come to place the connection element so as to achieve the mechanical connection between the two parts. This embodiment is less convenient.
  • connection element 4 is stressed in tension beyond a threshold force, the first part 2 is separated from the second part 3.
  • the movable element 5 is used to modify the mechanical connection that exists between the first piece 2, the second piece 3 and the connecting member 4.
  • the movable member 5 can be placed at least in a first position or in a second position.
  • the mobile element 5 is configured to make or eliminate a direct mechanical connection between the first part 2 and the second part 3.
  • This mechanical connection is advantageously used to avoid stressing the connection element 4 and to withstand a greater tensile force than the mechanical connection formed by the connecting element 4. In this way, the connector 1 is able to withstand greater load.
  • the mobile element 5 is configured to modify the mechanical connection between the first part 2 and the second part 3 by means of the connection element 4.
  • the connection element 4 comprises for example a gripping zone for the first part 2 and several different gripping zones for the second part 3. The different gripping zones make it possible to put under stress different zones of the connection element 4.
  • the movable member 5 is configured to move one end of the connection element 4 so that the latter cooperates with additional coupling means.
  • the additional coupling means may be arranged above or above the coupling means.
  • the additional coupling and coupling means are both formed by clips forming clips.
  • the two coupling means are configured to have different tensile strengths in cooperation with the connection element 4.
  • the coupling means are configured to withstand beyond the breaking threshold of the connection element 4 then the additional means are configured to allow release of the connection element 4 before it breaks.
  • the movable element 5 can therefore be configured to move the additional coupling and coupling means so that the latter set the uncoupling thresholds between the first and second parts 2 and 3.
  • the movable member 5 may also be configured to move the connecting member 4 to be coupled to the additional coupling means or coupling means.
  • the movable element 5 is configured to apply a stress on the connection element 4 in order to stop working the latter in traction, but for example in flexion. The breaking force is then modified.
  • the movable element 5 is positioned on the upper wall of the housing 3c (cf. Fig. 2 ).
  • the lower face 5a of the movable member 5 is defined as being in contact with the upper wall of the housing 3c, and the upper face 5b as being the opposite face to the lower face 5a.
  • the movable element 5 is rotatably mounted relative to the assembly comprising the first part 2, the second part 3 and the connecting element 4.
  • the rotational assembly is preferred to a translation assembly because the probability of tilting between the first and second positions unintentionally is lower.
  • the upper part of the housing 3c has a hole cooperating with a projecting portion 5c positioned on the lower face 5a of the movable element 5.
  • the movable element 5 is able to move between first and second positions.
  • the movable element 5 can rotate 180 °.
  • the user can move the part manually or using a tool.
  • a notch 5d may for example be provided to rotate the movable member 5 with a coin. Rotating an angle greater than or equal to 90 ° is advantageous for distinguishing the first and second positions as this reduces the risks of unintentional actuation.
  • the movable element 5 advantageously comprises first and second ends 5e and 5f, for example opposite along the longitudinal axis of the connector 1.
  • the first end 5e of the movable element 5 has a stop orthogonal to the longitudinal axis, while the second end 5f is devoid of it.
  • the abutment surface of the first end 5e is intended to cooperate with a stud 2e present on the central portion 2c of the first piece 2.
  • the second stud is inserted into a notch 3e placed on the upper wall of the housing 3c.
  • the notch 3e is advantageously placed along the longitudinal axis of the connector 1. The stud 2e thus projects through the housing 3c.
  • the abutment surface of the first end 5e cooperates with the pad 2e, so as to prevent the separation of the first and second parts 2 and 3 when they are subjected to a first threshold traction force.
  • the abutment surface of the first end 5e and the second stud form a connection additional mechanics between the first and second parts 2 and 3, and prevents the power of the connection element.
  • the 2nd pad plays no role because the second end 5f has no abutment surface. In this way, when the first and second parts 2 and 3 are subjected to a tensile force, it is possible to separate them for a second tractive force threshold of intensity less than that of the first tractive force threshold.
  • the movable member 5 forms an additional mechanical connection between the first piece 2 and the second piece 3 when placed in the first position.
  • the connector 1 can withstand tensile forces of greater intensity when the movable member 5 is in the first position than when it is in the second position.
  • the movable element 5 does not form any mechanical connection when it is in the second position.
  • the connector 1 When the movable element 5 is in the first position, the connector 1 may advantageously withstand a first tractive force threshold along the longitudinal axis. In this way, for the helmet to be compliant for sporty use, it suffices to use a connector 1 such as the one just described, and to place the movable element 5 in the first position.
  • the second tractive force threshold allowing the separation of parts 2 and 3 can advantageously be between 150 and 250N.
  • a protective helmet may therefore be suitable for use in the professional setting when a connector 1 is used, and the movable member 5 is placed in the second position.
  • the connector 1 can be modified in order to adapt its resistance to other threshold traction forces.
  • the shape of the various elements of the connector, and the material in which these elements are manufactured can be adapted to be more or less resistant depending on whether one places the movable element 5 in the first or in the second position.
  • the movable element 5 can be configured to prevent the mechanical connection between the first part 2 and the second part 3 when it is in the first position. This precaution prevents the joining of the first and second parts of the connector 1 while the connection element 4 has been forgotten during assembly.
  • the connector 1 may comprise a closure element for closing a protective helmet strap.
  • the closing system of the protective helmet straps and the connector 1 then form one and the same element that the user must adjust according to the type of use that he envisages (professional or sports).
  • the figure 6 presents an embodiment of a protective helmet 6 with at least one connector 1 such as that just described.
  • the protective helmet 6 also comprises a cap 7, and a jugular strap connected directly or indirectly, and removably to the cap 7 to allow the user to place the protective helmet 6 on his head.
  • the first piece 2 of the connector 1 can be connected to the cap 7 via an additional strap, and the second piece 3 can be connected to the jugular strap.
  • the first part 2 of the connector 1 is connected to the chinstrap, possibly by an intermediate element such as an additional strap, and that the second part 3 of the connector 1 is connected at the cap 7.
  • the protective helmet 6 comprises a single connector 1 connected to a front strap 8a, an occipital strap 8b and the jugular strap 8c. More specifically, the jugular strap 8c is connected to the first piece 2 via the attachment zone 2a, and the front and occipital straps are connected to the second piece via the attachment areas 3a.
  • the connector when the movable member 5 of the connector 1 is placed in the first position, the connector is configured to prevent the separation of the first and second parts when the chinstrap 8c is subjected to a threshold tensile force F 1 preferably, greater than 500 N.
  • the pulling force F 2 received by the connector is less than half, that is to say preferably greater than 250 N.
  • the connector 1 is therefore configured to withstand forces equal to 50% of the force exerted between the protective helmet 6 and the jugular strap 8c.
  • the rupture of the connector 1 frees the user's head when the movable member 5 is placed in the second position, that is to say in the context of professional use.
  • the first and second parts 2 and 3 are then disengaged when the jugular strap 8c is subjected to a second threshold traction force of between 150 and 250 N. This prevents the user from being strangled by the jugular strap 8c if the cap 7 is stuck.
  • the jugular strap 8c can be connected on one side of the protective helmet 6 by the connector 1 and be fixed on the other side of the protective helmet 6 either directly or via an adjustment loop.
  • the protective helmet 6 may comprise several connectors 1 mounted in parallel on the same lateral side of the cap 7.
  • the first and second threshold traction forces are divided by the number of connectors 1 mounted in parallel on the protective helmet 6.
  • the protective helmet 6 may comprise a first connector 1 connecting the cap 7 to the front strap 8a, and a second connector 1 connecting the cap 7 to the occipital strap 8b.
  • the first and second connectors 1 are advantageously placed either on the left side of the cap 7 or on the right side. In this way, their breaks allow the release of the jugular strap 8c.
  • the two connectors 1 are then configured so that the first threshold traction force is greater than F 1/4 , that is to say preferably greater than 125 N, and so that the second traction force threshold is between 37.5 and 62.5 N.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à un connecteur de sangle jugulaire à rupture variable, et à un casque de protection muni d'au moins un tel connecteur.The invention relates to a jugular strap connector with variable breaking, and a protective helmet provided with at least one such connector.

État de la techniqueState of the art

Les casques de protection utilisés dans le cadre d'une activité sportive ou d'une activité professionnelle ne répondent pas aux mêmes exigences.Protective helmets used in the context of a sports activity or professional activity do not meet the same requirements.

En effet, dans le cadre d'une activité professionnelle, un casque de protection doit pouvoir être désolidarisé de la tête de l'utilisateur si un effort de traction supérieur à un certain seuil est exercé sur la calotte du casque. Par exemple, il pourrait arriver qu'un élagueur soit pendu par son casque si ce dernier est accroché à une branche d'arbre et qu'il ne parvient pas à le décrocher. La sangle jugulaire pourrait donc étrangler le porteur du casque.Indeed, in the context of a professional activity, a protective helmet must be able to be detached from the head of the user if a tensile force greater than a certain threshold is exerted on the cap of the helmet. For example, it could happen that a pruner is hanged by his helmet if it is hooked to a tree branch and he can not pick it up. The jugular strap could therefore strangle the wearer of the helmet.

Pour prévenir ce type de danger, le casque de protection doit satisfaire à des exigences drastiques de sécurité. En particulier la sangle jugulaire doit pouvoir se désolidariser de la calotte si elle est soumise à une force de traction supérieure à un certain seuil. La tête de l'utilisateur est alors libérée et ce dernier ne peut plus être étranglé par la sangle jugulaire.To prevent this type of danger, the helmet must meet stringent safety requirements. In particular the jugular strap must be able to disengage the cap if it is subjected to a tensile force greater than a certain threshold. The user's head is then released and the user can no longer be strangled by the chin strap.

En Europe, cette règle de sécurité est régie par la norme EN 397, qui impose au constructeur de fabriquer des casques de protection comprenant au moins un point d'ancrage de la sangle jugulaire sur la calotte qui sont configurés pour casser lorsque la sangle jugulaire est soumise à une force de traction comprise entre 150 et 250 Newtons.
Dans le cadre d'une activité sportive, le principal danger qui guette l'utilisateur est la chute de pierres. Il est donc fondamental que le casque de protection résiste aux chocs et que la sangle jugulaire reste solidaire de la calotte pour que l'utilisateur reste correctement protégé.
En Europe, un casque de protection utilisé pour une activité sportive doit satisfaire la norme EN 12492. Cette norme impose que le système de fixation de la sangle jugulaire sur la calotte puisse subir une force de traction d'au moins 500 Newtons sans détérioration du casque de protection.
Ces deux normes sont incompatibles l'une avec l'autre. Par conséquent, un utilisateur ayant besoin d'un casque de protection dans le cadre d'une activité sportive et dans le cadre d'une activité professionnelle doit posséder non pas un, mais deux casques de protection.
Par ailleurs, la fabrication des casques nécessite le développement de deux types de produits et la mise en oeuvre de deux lignes de production différentes. Un connecteur pouvant être équipé d'une goupille additionnelle augmentant la force de traction admissible du connecteur est décrit dans la demande US 2007/0199182 A1 .In Europe, this safety rule is governed by the EN 397 standard, which requires the manufacturer to manufacture protective helmets comprising at least one anchor point of the chinstrap on the cap which are configured to break when the chin strap is subjected to a tensile force of between 150 and 250 Newtons.
In the context of a sports activity, the main danger for the user is falling rocks. It is therefore fundamental that the protective helmet resists shocks and that the jugular strap remains attached to the cap so that the user remains properly protected.
In Europe, a protective helmet used for a sports activity must meet the EN 12492 standard. This standard requires that the fastening system of the chinstrap on the cap may experience a tensile force of at least 500 Newtons without damage to the helmet. protection.
These two standards are incompatible with each other. Therefore, a user in need of a protective helmet in the context of a sports activity and as part of a professional activity must have not one, but two protective helmets.
In addition, the manufacture of helmets requires the development of two types of products and the implementation of two different production lines. A connector that can be equipped with an additional pin increasing the allowable pulling force of the connector is described in the application US 2007/0199182 A1 .

Objet de l'inventionObject of the invention

Un objet de l'invention consiste à réaliser un connecteur de sangle jugulaire capable de s'adapter aux deux types de contraintes évoquées ci-dessus, de sorte à permettre l'utilisation d'un même casque dans le cadre d'une activité professionnelle et dans le cadre d'une activité sportive.
A cet effet, le connecteur comprend :

  • une première pièce destinée à être connectée à une calotte de casque,
  • une deuxième pièce destinée à être montée de manière amovible sur la première pièce,
  • un élément de connexion reliant mécaniquement la première pièce et la deuxième pièce, de sorte à former une première connexion mécanique,
  • un élément mobile se déplaçant entre des première et deuxième positions, et configuré pour :
    • empêcher la désolidarisation des première et deuxième pièces lorsque lesdites pièces sont soumises à une première force de traction seuil, lorsque l'élément mobile est dans la première position,
    • permettre la désolidarisation des première et deuxième pièces lorsque lesdites pièces sont soumises à une deuxième force de traction seuil d'intensité inférieure à celle de la première force de traction seuil, lorsque l'élément mobile est dans la deuxième position.
An object of the invention is to provide a jugular strap connector capable of adapting to the two types of constraints mentioned above, so as to allow the use of the same helmet in the context of a professional activity and as part of a sports activity.
For this purpose, the connector comprises:
  • a first piece intended to be connected to a helmet cap,
  • a second piece intended to be removably mounted on the first piece,
  • a connection element mechanically connecting the first part and the second part, so as to form a first mechanical connection,
  • a movable member moving between first and second positions, and configured to:
    • to prevent the separation of the first and second parts when said parts are subjected to a first tractive force threshold, when the movable element is in the first position,
    • allow the separation of the first and second parts when said parts are subjected to a second tractive force threshold of intensity less than that of the first tractive force threshold, when the movable element is in the second position.

Selon un mode de réalisation spécifique, l'élément de connexion peut comporter une pièce indépendante ayant une première extrémité et une deuxième extrémité opposée à la première extrémité, la première extrémité étant connectée à la première pièce et la deuxième extrémité étant connectée à la deuxième pièce. Dans ce cas, l'élément de connexion peut être configuré pour permettre la désolidarisation des première et deuxième pièces par rupture de l'élément de connexion lorsque l'élément mobile est dans la deuxième position.According to a specific embodiment, the connection element may comprise an independent part having a first end and a second end opposite the first end, the first end being connected to the first part and the second end being connected to the second part. . In this case, the connection element can be configured to allow the separation of the first and second parts by breaking the connection element when the movable element is in the second position.

Selon un mode de réalisation particulier de l'invention, l'élément de connexion peut être partiellement positionné dans un logement de la première pièce, et coopère avec des moyens de clipsage placés sur la deuxième pièce, de sorte à former la première connexion mécanique.According to a particular embodiment of the invention, the connection element can be partially positioned in a housing of the first piece, and cooperates with clipping means placed on the second piece, so as to form the first mechanical connection.

Par ailleurs, l'élément mobile peut être configuré pour former une connexion mécanique supplémentaire entre la première pièce et la deuxième pièce lorsqu'il est placé dans la première position. Pour cela, l'élément mobile peut par exemple coopérer avec un plot placé sur le connecteur. L'élément mobile peut en outre être monté mobile en rotation.Furthermore, the movable member may be configured to form an additional mechanical connection between the first piece and the second piece when placed in the first position. For this, the movable element may for example cooperate with a stud placed on the connector. The movable member may further be rotatably mounted.

Selon un mode de réalisation particulier du connecteur, celui-ci peut comprendre un élément de fermeture destiné à fermer une sangle d'un casque de protection et/ ou régler sa longueur.According to a particular embodiment of the connector, it may comprise a closure element for closing a strap of a protective helmet and / or adjust its length.

L'invention concerne également un casque de protection comportant une calotte, une sangle jugulaire et au moins un connecteur comportant les caractéristiques techniques précitées.The invention also relates to a protective helmet comprising a cap, a jugular strap and at least one connector having the aforementioned technical characteristics.

Lorsque le casque de protection comporte un unique connecteur, la première force de traction seuil exercée sur la sangle jugulaire peut être supérieure à 500 N, et la deuxième force de traction seuil exercée sur la sangle jugulaire peut être comprise entre 150 et 250 N, cette force de traction étant appliquée entre le casque et la jugulaire.When the protective helmet comprises a single connector, the first threshold pulling force exerted on the chinstrap may be greater than 500 N, and the second threshold tractive force exerted on the chinstrap may be between 150 and 250 N, this traction force being applied between the helmet and the chinstrap.

Selon un mode de réalisation du casque, la première pièce de l'un au moins des connecteurs peut être connectée à la calotte par l'intermédiaire d'une sangle additionnelle et la deuxième pièce dudit connecteur peut être connectée à la sangle jugulaire.According to one embodiment of the helmet, the first piece of at least one of the connectors can be connected to the cap by means of an additional strap and the second piece of said connector can be connected to the jugular strap.

Selon un mode de réalisation alternatif, la première pièce de l'un au moins des connecteurs peut être reliée à la sangle jugulaire, et la deuxième pièce dudit connecteur peut être connectée à la calotte.According to an alternative embodiment, the first piece of at least one of the connectors can be connected to the jugular strap, and the second piece of said connector can be connected to the cap.

L'invention concerne également un procédé d'assemblage d'un connecteur comportant les caractéristiques techniques précitées. Celui comporte les étapes suivantes :

  • fournir la première pièce, la deuxième pièce et l'élément de connexion,
  • connecter mécaniquement les première et deuxième pièces au moyen de l'élément de connexion, de sorte à empêcher la désolidarisation des première et deuxième pièces lorsque lesdites pièces sont soumises à une force de traction inférieure à la deuxième force de traction seuil.
The invention also relates to a method of assembling a connector having the aforementioned technical characteristics. This involves the following steps:
  • provide the first part, the second part and the connection element,
  • mechanically connecting the first and second parts by means of the connecting element, so as to prevent the first and second parts from being detached when said parts are subjected to a lower tensile force than the second threshold traction force.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels :

  • la figure 1 représente une vue éclatée et en perspective d'un connecteur,
  • les figures 2 et 3 représentent le connecteur en vue en coupe et en perspective lorsque l'élément mobile est respectivement dans les première et deuxième positions,
  • les figures 4 et 5 sont des vues en coupe du connecteur illustrant la position de l'élément de connexion par rapport aux première et deuxième pièces, respectivement lorsque le connecteur est apte à fonctionner, et lorsqu'il ne l'est plus,
  • la figure 6 illustre de façon schématique un mode de réalisation d'un casque de protection muni d'un connecteur.
Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given by way of non-limiting example and represented in the accompanying drawings, in which:
  • the figure 1 represents an exploded perspective view of a connector,
  • the Figures 2 and 3 represent the connector in sectional view and in perspective when the movable element is respectively in the first and second positions,
  • the Figures 4 and 5 are sectional views of the connector illustrating the position of the connection element relative to the first and second parts, respectively when the connector is able to function, and when it is no longer,
  • the figure 6 schematically illustrates an embodiment of a protective helmet with a connector.

Description détailléedetailed description

Selon un mode de réalisation d'un connecteur 1, celui-ci comporte une première pièce 2, une deuxième pièce 3, un élément de connexion 4, et un élément mobile 5.According to one embodiment of a connector 1, it comprises a first part 2, a second part 3, a connection element 4, and a movable element 5.

La première pièce 2 comprend une zone d'attache 2a destinée à être fixée directement ou indirectement à une calotte de casque de protection, et est par exemple destinée à loger au moins une sangle, comme on le verra plus loin. La deuxième pièce 3 comporte également une ou deux zones d'attache 3a destinées à être fixées directement ou indirectement à la calotte du casque et destinées par exemple à coopérer avec une ou deux sangles. Les zones d'attache 2a et 3a ont avantageusement la forme d'une fente afin de faciliter la connexion avec une sangle.The first part 2 comprises an attachment zone 2a intended to be fixed directly or indirectly to a protective helmet cap, and is for example intended to accommodate at least one strap, as will be seen later. The second piece 3 also comprises one or two attachment zones 3a intended to be fixed directly or indirectly to the cap of the helmet and intended for example to cooperate with one or two straps. The attachment zones 2a and 3a advantageously have the shape of a slot to facilitate the connection with a strap.

Dans la suite, l'axe longitudinal du connecteur 1 est défini comme étant l'axe de la sangle logée dans la zone d'attache 2a. Il est représenté par l'axe AA sur les figures 2 à 4.In the following, the longitudinal axis of the connector 1 is defined as the axis of the strap housed in the attachment zone 2a. It is represented by the AA axis on Figures 2 to 4 .

Les première et deuxième pièces 2 et 3 sont montées de manière amovible l'une par rapport à l'autre, elles peuvent donc se monter et se démonter sans rupture. De manière avantageuse, une partie de la première pièce 2 vient coulisser à l'intérieur d'une cavité de la deuxième pièce 3 et/ou une partie de la deuxième pièce 3 vient coulisser à l'intérieur d'une cavité de la première pièce 2. Ce montage à coulissement permet de définir plus facilement les efforts à appliquer sur l'élément de connexion 4.The first and second parts 2 and 3 are removably mounted relative to each other, they can be assembled and disassembled without rupture. Advantageously, a part of the first part 2 slides inside a cavity of the second part 3 and / or part of the second part 3 slides inside a cavity of the first part 2. This sliding assembly makes it easier to define the forces to be applied to the connection element 4.

Les première et deuxième pièces 2 et 3 sont connectées mécaniquement au moyen de l'élément de connexion 4, de sorte à empêcher la désolidarisation des première et deuxième pièces.The first and second parts 2 and 3 are mechanically connected by means of the connection element 4, so as to prevent the separation of the first and second parts.

Dans le mode de réalisation illustré, la première pièce 2 comprend deux fentes 2b situées suivant l'axe longitudinal, et définissant une partie centrale 2c. Un mode de réalisation avec une seule fente est également envisageable. La deuxième pièce 3 comporte une embase 3b sur laquelle se trouve un logement 3c. La partie centrale 2c de la première pièce 2 et le logement 3c de la deuxième pièce 3 ont des dimensions adaptées de façon à permettre leur emboîtement l'une dans l'autre, les parois latérales du logement 3c coulissant dans les fentes 2b. Un mode de réalisation alternatif dans lequel la première pièce 2 possède plus de deux fentes 2b est également envisageable.In the illustrated embodiment, the first part 2 comprises two slots 2b located along the longitudinal axis, and defining a central portion 2c. An embodiment with a single slot is also conceivable. The second piece 3 comprises a base 3b on which there is a housing 3c. The central portion 2c of the first piece 2 and the housing 3c of the second piece 3 have dimensions adapted to allow their interlocking into one another, the side walls of the housing 3c sliding in the slots 2b. An alternative embodiment in which the first part 2 has more than two slots 2b is also conceivable.

L'élément de connexion 4 permet de relier mécaniquement la première pièce 2 et la deuxième pièce 3. Il peut comprendre une pièce indépendante des première et deuxième pièces 2 et 3. Celle-ci a par exemple la forme d'un H, mais d'autres formes adaptées sont également possibles, un cercle, un carré, un rectangle. Dans un mode de réalisation avantageux, l'élément de connexion 4 est utilisé comme une éprouvette de traction, c'est à dire qu'il forme une première connexion mécanique entre les pièces 2 et 3 jusqu'à ce que la pièce soit brisée sous l'effet d'une force de traction (cf. fig. 5). L'élément de connexion 4 est donc une pièce fusible pouvant être remplacée en cas de défaillance du connecteur 1. La rupture de l'élément de connexion 4 permet de détecter rapidement la sollicitation du connecteur au delà d'une valeur seuil.The connection element 4 makes it possible to mechanically connect the first part 2 and the second part 3. It can comprise an independent part of the first and second parts 2 and 3. This part has for example the shape of an H, but other suitable forms are also possible, a circle, a square, a rectangle. In an advantageous embodiment, the connecting element 4 is used as a tensile specimen, that is to say it forms a first mechanical connection between the parts 2 and 3 until the part is broken under the effect of a pulling force (cf. Fig. 5 ). The connection element 4 is therefore a fuse piece that can be replaced in the event of a failure of the connector 1. The break of the connection element 4 makes it possible to rapidly detect the stress on the connector beyond a threshold value.

Selon une variante de réalisation, un système peut être prévu pour que l'élément de connexion 4 soit libéré par la première ou la deuxième pièce lorsqu'une force de traction seuil est atteinte sans que l'élément de connexion 4 soit brisé.According to an alternative embodiment, a system may be provided so that the connecting element 4 is released by the first or the second part when a threshold traction force is reached without the connection element 4 being broken.

Selon une autre variante de réalisation, l'élément de connexion 4 peut faire partie intégrante de l'une des première ou deuxième pièce 2 ou 3, dans ce cas, c'est l'ensemble de la pièce qu'il faut remplacer en cas de rupture.According to another variant embodiment, the connection element 4 can be an integral part of one of the first or second parts 2 or 3, in which case the whole of the part must be replaced in case a break.

Dans le mode de réalisation illustré sur les figures, l'élément de connexion 4 est une pièce indépendante. Une première extrémité 4a de l'élément de connexion 4 est placée dans un logement 2d situé sur la partie centrale 2c de la première pièce 2. La forme du logement 2d est avantageusement complémentaire de la forme de l'extrémité de l'élément de connexion 4, pour que ce dernier soit maintenu fixe suivant l'axe longitudinal. Lorsque la partie centrale 2c de la première pièce 2 est emboîtée dans le logement 3c de la deuxième pièce 3, l'élément de connexion 4 est placé à l'intérieur du logement 3c. Ce dernier comporte des moyens de clipsage 3d destinés à coopérer avec l'élément de connexion 4 afin de réaliser une première connexion mécanique entre les première et deuxième pièces (cf. fig. 4).In the embodiment illustrated in the figures, the connection element 4 is an independent part. A first end 4a of the connection element 4 is placed in a housing 2d located on the central part 2c of the first part 2. The shape of the housing 2d is advantageously complementary to the shape of the end of the connection element 4, so that the latter is held fixed along the longitudinal axis. When the central portion 2c of the first part 2 is engaged in the housing 3c of the second part 3, the connection element 4 is placed inside the housing 3c. The latter comprises clipping means 3d intended to cooperate with the connection element 4 in order to make a first mechanical connection between the first and second parts (cf. Fig. 4 ).

Cependant, les moyens de clipsage peuvent être remplacés par une rampe se terminant par un méplat formant une zone de fixation. De cette manière, l'élément de connexion 4 monte la rampe sans qu'un effort important soit fourni. L'élément de connexion 4 tombe ensuite dans la zone de fixation où un effort bien plus important devra être appliqué pour le faire sortir de la zone de fixation ou pour entrainer la rupture de l'élément de connexion 4.However, the clipping means may be replaced by a ramp ending in a flat forming a fixing zone. In this way, the connection element 4 ascends the ramp without a major effort being provided. The connection element 4 then falls into the fixing zone where a much greater force will have to be applied to remove it from the fixing zone or to cause the breaking of the connection element 4.

De manière générale, il est avantageux d'utiliser des moyens d'accouplement qui nécessitent un premier effort pour initier l'accouplement en déplaçant l'élément de connexion 4 dans une première direction, et un deuxième effort supérieur au première effort pour éliminer cet accouplement en essayant de déplacer l'élément de connexion 4 dans une deuxième direction opposée à la première direction.In general, it is advantageous to use coupling means which require a first effort to initiate the coupling by moving the connection element 4 in a first direction, and a second force greater than the first force to eliminate this coupling. attempting to move the connecting member 4 in a second direction opposite to the first direction.

L'élément de connexion 4 est par exemple monté sur la première pièce 2 ou sur la deuxième pièce 3. Lors du coulissement de la première pièce 2 dans la deuxième pièce 3 ou de la deuxième pièce 3 dans la première pièce 2, la connexion mécanique se crée au moyen de l'élément de connexion 4.The connection element 4 is for example mounted on the first part 2 or the second part 3. When sliding the first part 2 in the second part 3 or the second part 3 in the first part 2, the mechanical connection is created by means of the connection element 4.

Selon le mode de réalisation particulier illustré, les moyens de clipsage correspondent à des doigts crochetés 3d appartenant aux parois latérales du logement 3c. Ce mode de réalisation présente l'avantage d'être particulièrement compact et efficace.According to the particular embodiment illustrated, the clipping means correspond to 3d hooked fingers belonging to the side walls of the housing 3c. This embodiment has the advantage of being particularly compact and efficient.

Lorsque la partie centrale 2c munie de l'élément de connexion 4 est introduite dans le logement 3c de la deuxième pièce, l'élément de connexion 4 pousse sur les doigts crochetés 3d jusqu'à ce que la deuxième extrémité 4b de l'élément de connexion 4 les dépasse. L'élément de connexion 4 forme alors la première connexion mécanique entre les première et deuxième pièces 2 et 3. Il est impossible de retirer la partie centrale 2c du logement 3c dans briser l'élément de connexion 4 (cf. fig. 4 et 5).When the central part 2c provided with the connecting element 4 is introduced into the housing 3c of the second part, the connecting element 4 pushes on the hooked fingers 3d until the second end 4b of the element connection 4 exceeds them. The connection element 4 then forms the first mechanical connection between the first and second parts 2 and 3. It is impossible to remove the central portion 2c of the housing 3c in breaking the connection element 4 (cf. Fig. 4 and 5 ).

En variante, les moyens d'accouplements précités peuvent ne pas être utilisés. Il est nécessaire dans ce cas de démonter le connecteur pour venir placer l'élément de connexion de manière à réaliser la connexion mécanique entre les deux pièces. Ce mode de réalisation est moins pratique.As a variant, the aforementioned coupling means may not be used. It is necessary in this case to disassemble the connector to come to place the connection element so as to achieve the mechanical connection between the two parts. This embodiment is less convenient.

Comme indiqué plus haut, si l'élément de connexion 4 est sollicité en traction au delà d'une force seuil, il y a désolidarisation de la première pièce 2 avec la deuxième pièce 3.As indicated above, if the connection element 4 is stressed in tension beyond a threshold force, the first part 2 is separated from the second part 3.

Lorsque l'utilisateur cherche à résister à cette force de traction ou au contraire à céder à un effort plus faible, il est avantageux de prévoir des moyens de modification de la valeur de l'effort de désolidarisation. L'élément mobile 5 est utilisé pour modifier la connexion mécanique qui existe entre la première pièce 2, la deuxième pièce 3 et l'élément de connexion 4. L'élément mobile 5 peut être placé au moins dans une première position ou dans une deuxième position.When the user tries to resist this pulling force or on the contrary to yield to a lower effort, it is advantageous to provide means for modifying the value of the uncoupling effort. The movable element 5 is used to modify the mechanical connection that exists between the first piece 2, the second piece 3 and the connecting member 4. The movable member 5 can be placed at least in a first position or in a second position.

Dans un premier cas de figure, l'élément mobile 5 est configuré pour réaliser ou éliminer une connexion mécanique directe entre la première pièce 2 et la deuxième pièce 3. Cette connexion mécanique est avantageusement utilisée pour éviter de solliciter l'élément de connexion 4 et pour résister à une force de traction supérieure à la connexion mécanique formée par l'élément de connexion 4. De cette manière, le connecteur 1 est capable de résister à une charge plus importante.In a first case, the mobile element 5 is configured to make or eliminate a direct mechanical connection between the first part 2 and the second part 3. This mechanical connection is advantageously used to avoid stressing the connection element 4 and to withstand a greater tensile force than the mechanical connection formed by the connecting element 4. In this way, the connector 1 is able to withstand greater load.

Dans un second cas de figure, l'élément mobile 5 est configuré pour modifier la connexion mécanique entre la première pièce 2 et la deuxième pièce 3 au moyen de l'élément de connexion 4. Dans ce mode de réalisation, l'élément de connexion 4 comporte par exemple une zone de préhension pour la première pièce 2 et plusieurs zones de préhension différentes pour la deuxième pièce 3. Les différentes zones de préhension permettent de mettre sous contrainte différentes zones de l'élément de connexion 4.In a second case, the mobile element 5 is configured to modify the mechanical connection between the first part 2 and the second part 3 by means of the connection element 4. In this embodiment, the connection element 4 comprises for example a gripping zone for the first part 2 and several different gripping zones for the second part 3. The different gripping zones make it possible to put under stress different zones of the connection element 4.

Dans un autre cas de figure, l'élément mobile 5 est configuré pour déplacer une extrémité de l'élément de connexion 4 afin que ce dernier coopère avec un moyen d'accouplement supplémentaire. A titre d'exemple, les moyens d'accouplement supplémentaires peuvent être disposés au dessus ou en dessus des moyens d'accouplement. Les moyens d'accouplement et d'accouplement supplémentaires sont tous les deux formés par des pinces formant des clips. Les deux moyens d'accouplement sont configurés pour avoir des résistances à la traction différentes en coopération avec l'élément de connexion 4. Par exemple, les moyens d'accouplement sont configurés pour résister au delà du seuil de rupture de l'élément de connexion 4 alors que les moyens supplémentaires sont configurés pour autoriser une libération de l'élément de connexion 4 avant sa rupture.In another case, the movable member 5 is configured to move one end of the connection element 4 so that the latter cooperates with additional coupling means. By way of example, the additional coupling means may be arranged above or above the coupling means. The additional coupling and coupling means are both formed by clips forming clips. The two coupling means are configured to have different tensile strengths in cooperation with the connection element 4. For example, the coupling means are configured to withstand beyond the breaking threshold of the connection element 4 then the additional means are configured to allow release of the connection element 4 before it breaks.

L'élément mobile 5 peut donc être configuré pour déplacer les moyens d'accouplement et d'accouplement supplémentaires afin que ces derniers fixent les seuils de désaccouplement entre les première et deuxième pièces 2 et 3.The movable element 5 can therefore be configured to move the additional coupling and coupling means so that the latter set the uncoupling thresholds between the first and second parts 2 and 3.

L'élément mobile 5 peut également être configuré pour déplacer l'élément de connexion 4 afin qu'il soit accouplé aux moyens d'accouplement ou aux moyens d'accouplement supplémentaires.The movable member 5 may also be configured to move the connecting member 4 to be coupled to the additional coupling means or coupling means.

Il est encore possible de prévoir que l'élément mobile 5 soit configuré pour appliquer une contrainte sur l'élément de connexion 4 afin de ne plus faire travailler ce dernier en traction, mais par exemple en flexion. L'effort à la rupture est alors modifié.It is still possible to provide that the movable element 5 is configured to apply a stress on the connection element 4 in order to stop working the latter in traction, but for example in flexion. The breaking force is then modified.

Selon le mode de réalisation illustré sur les figures 1, 2 et 3, l'élément mobile 5 est positionné sur la paroi supérieure du logement 3c (cf. fig. 2). La face inférieure 5a de l'élément mobile 5 est définie comme étant en contact avec la paroi supérieure du logement 3c, et la face supérieure 5b comme étant la face opposée à la face inférieure 5a.According to the embodiment illustrated on the figures 1 , 2 and 3 , the movable element 5 is positioned on the upper wall of the housing 3c (cf. Fig. 2 ). The lower face 5a of the movable member 5 is defined as being in contact with the upper wall of the housing 3c, and the upper face 5b as being the opposite face to the lower face 5a.

L'élément mobile 5 est monté mobile en rotation par rapport à l'ensemble comprenant la première pièce 2, la deuxième pièce 3 et l'élément de connexion 4. Le montage en rotation est préféré à un montage en translation car la probabilité de basculer entre les première et deuxième positions de manière non intentionnelle est plus faible.The movable element 5 is rotatably mounted relative to the assembly comprising the first part 2, the second part 3 and the connecting element 4. The rotational assembly is preferred to a translation assembly because the probability of tilting between the first and second positions unintentionally is lower.

Pour permettre la rotation de l'élément mobile 5, la partie supérieure du logement 3c possède un trou coopérant avec une portion en saillie 5c positionnée sur la face inférieure 5a de l'élément mobile 5.To allow the rotation of the movable element 5, the upper part of the housing 3c has a hole cooperating with a projecting portion 5c positioned on the lower face 5a of the movable element 5.

L'élément mobile 5 est apte à se déplacer entre des première et deuxième positions. Dans le mode de réalisation particulier illustré sur les figures, l'élément mobile 5 peut tourner de 180°. L'utilisateur peut bouger la pièce manuellement ou à l'aide d'un outil. Une encoche 5d peut par exemple être prévue pour faire tourner l'élément mobile 5 à l'aide d'une pièce de monnaie. Une rotation d'un angle supérieur ou égal à 90° est avantageuse pour distinguer les première et deuxième positions car cela réduit les risques d'actionnement non intentionnel.The movable element 5 is able to move between first and second positions. In the particular embodiment illustrated in the figures, the movable element 5 can rotate 180 °. The user can move the part manually or using a tool. A notch 5d may for example be provided to rotate the movable member 5 with a coin. Rotating an angle greater than or equal to 90 ° is advantageous for distinguishing the first and second positions as this reduces the risks of unintentional actuation.

L'élément mobile 5 comporte avantageusement des première et deuxième extrémités 5e et 5f par exemple opposées suivant l'axe longitudinal du connecteur 1. La première extrémité 5e de l'élément mobile 5 est dotée d'une butée orthogonale à l'axe longitudinal, tandis que la deuxième extrémité 5f en est dépourvue.The movable element 5 advantageously comprises first and second ends 5e and 5f, for example opposite along the longitudinal axis of the connector 1. The first end 5e of the movable element 5 has a stop orthogonal to the longitudinal axis, while the second end 5f is devoid of it.

La surface de butée de la première extrémité 5e est destinée à coopérer avec un plot 2e présent sur la partie centrale 2c de la première pièce 2. Lorsque la partie centrale 2c est insérée dans le logement 3c, le plot 2e est inséré dans une entaille 3e placée sur la paroi supérieure du logement 3c. L'entaille 3e est avantageusement placée suivant l'axe longitudinal du connecteur 1. Le plot 2e fait donc saillie à travers le logement 3c.The abutment surface of the first end 5e is intended to cooperate with a stud 2e present on the central portion 2c of the first piece 2. When the central portion 2c is inserted into the housing 3c, the second stud is inserted into a notch 3e placed on the upper wall of the housing 3c. The notch 3e is advantageously placed along the longitudinal axis of the connector 1. The stud 2e thus projects through the housing 3c.

Lorsque l'élément mobile 5 est placé dans la première position (cf. fig. 2), la surface de butée de la première extrémité 5e coopère avec le plot 2e, de façon à empêcher la désolidarisation des première et deuxième pièces 2 et 3 lorsqu'elles sont soumise à une première force de traction seuil. La surface de butée de la première extrémité 5e et le plot 2e forment une connexion mécanique supplémentaire entre les première et deuxième pièces 2 et 3, et vient empêcher la mise sous tension de l'élément de connexion.When the movable element 5 is placed in the first position (cf. Fig. 2 ), the abutment surface of the first end 5e cooperates with the pad 2e, so as to prevent the separation of the first and second parts 2 and 3 when they are subjected to a first threshold traction force. The abutment surface of the first end 5e and the second stud form a connection additional mechanics between the first and second parts 2 and 3, and prevents the power of the connection element.

Lorsque l'élément mobile 5 est placé dans la deuxième position (cf. fig. 3), le plot 2e ne joue aucun rôle car la deuxième extrémité 5f ne comporte pas de surface de butée. De cette façon, lorsque les première et deuxième pièces 2 et 3 sont soumises à une force de traction, il est possible de les désolidariser pour une deuxième force de traction seuil d'intensité inférieure à celle de la première force de traction seuil.When the movable element 5 is placed in the second position (cf. Fig. 3 ), the 2nd pad plays no role because the second end 5f has no abutment surface. In this way, when the first and second parts 2 and 3 are subjected to a tensile force, it is possible to separate them for a second tractive force threshold of intensity less than that of the first tractive force threshold.

Ainsi, l'élément mobile 5 forme une connexion mécanique supplémentaire entre la première pièce 2 et la deuxième pièce 3 lorsqu'il est placé dans la première position. Le connecteur 1 peut résister à des forces de traction d'intensité plus importante lorsque l'élément mobile 5 est dans la première position que lorsqu'il est dans la deuxième position.Thus, the movable member 5 forms an additional mechanical connection between the first piece 2 and the second piece 3 when placed in the first position. The connector 1 can withstand tensile forces of greater intensity when the movable member 5 is in the first position than when it is in the second position.

Dans le mode de réalisation présenté ci-dessus, l'élément mobile 5 ne forme aucune connexion mécanique lorsqu'il est dans la deuxième position. Il est toutefois envisageable de réaliser un élément mobile 5 formant une connexion mécanique dans les première et deuxième positions, à condition que la connexion mécanique dans la première position permette de résister à des forces de traction plus élevées que la connexion mécanique dans la deuxième position.In the embodiment presented above, the movable element 5 does not form any mechanical connection when it is in the second position. However, it is conceivable to provide a movable member 5 forming a mechanical connection in the first and second positions, provided that the mechanical connection in the first position allows to withstand higher tensile forces than the mechanical connection in the second position.

Lorsque l'élément mobile 5 est dans la première position, le connecteur 1 peut avantageusement résister à une première force de traction seuil suivant l'axe longitudinal. De cette façon, pour que le casque soit conforme pour une utilisation sportive, il suffit d'utiliser un connecteur 1 tel que celui qui vient d'être décrit, et de placer l'élément mobile 5 dans la première position.When the movable element 5 is in the first position, the connector 1 may advantageously withstand a first tractive force threshold along the longitudinal axis. In this way, for the helmet to be compliant for sporty use, it suffices to use a connector 1 such as the one just described, and to place the movable element 5 in the first position.

Lorsque l'élément mobile 5 est placé dans la deuxième position, il peut avantageusement autoriser la désolidarisation des première et deuxième pièces 2 et 3 par rupture de l'élément de connexion 4 (cf. fig. 5). La deuxième force de traction seuil permettant la désolidarisation des pièces 2 et 3 peut avantageusement être comprise entre 150 et 250N. Un casque de protection peut donc être conforme pour une utilisation dans le cadre professionnel lorsqu'un connecteur 1 est utilisé, et que l'élément mobile 5 est placé dans la deuxième position.When the movable element 5 is placed in the second position, it can advantageously allow the separation of the first and second parts 2 and 3 by breaking the connection element 4 (cf. Fig. 5 ). The second tractive force threshold allowing the separation of parts 2 and 3 can advantageously be between 150 and 250N. A protective helmet may therefore be suitable for use in the professional setting when a connector 1 is used, and the movable member 5 is placed in the second position.

Bien entendu, si les normes de sécurité des casques de protection pour usage professionnel et pour usage sportif changent, il est tout à fait possible de modifier les caractéristiques techniques du connecteur 1 afin d'adapter sa résistance à d'autres forces de traction seuil. Pour cela, la forme des différents éléments du connecteur, ainsi que le matériau dans lequel ces éléments sont fabriqués peuvent être adaptés afin d'être plus ou moins résistants selon que l'on place l'élément mobile 5 dans la première ou dans la deuxième position.Of course, if the safety standards of the protective helmets for professional use and for sport use change, it is quite possible to modify the technical characteristics of the connector 1 in order to adapt its resistance to other threshold traction forces. For this, the shape of the various elements of the connector, and the material in which these elements are manufactured can be adapted to be more or less resistant depending on whether one places the movable element 5 in the first or in the second position.

De manière avantageuse, l'élément mobile 5 peut être configuré pour empêcher la connexion mécanique entre la première pièce 2 et la deuxième pièce 3 lorsqu'il se trouve dans la première position. Cette précaution permet d'éviter la solidarisation des première et deuxième pièces du connecteur 1 alors que l'élément de connexion 4 a été oublié lors de l'assemblage.Advantageously, the movable element 5 can be configured to prevent the mechanical connection between the first part 2 and the second part 3 when it is in the first position. This precaution prevents the joining of the first and second parts of the connector 1 while the connection element 4 has been forgotten during assembly.

Selon un mode de réalisation particulier du connecteur 1 (non représenté), celui-ci peut comprendre un élément de fermeture destiné à fermer une sangle de casque de protection. Le système de fermeture des sangles du casque de protection et le connecteur 1 ne forment alors qu'un seul et même élément que l'utilisateur doit régler en fonction du type d'utilisation qu'il envisage (professionnel ou sportif).According to a particular embodiment of the connector 1 (not shown), it may comprise a closure element for closing a protective helmet strap. The closing system of the protective helmet straps and the connector 1 then form one and the same element that the user must adjust according to the type of use that he envisages (professional or sports).

La figure 6 présente un mode de réalisation d'un casque de protection 6 doté d'au moins un connecteur 1 tel que celui qui vient d'être décrit. Le casque de protection 6 comporte également une calotte 7, et une sangle jugulaire connectée directement ou indirectement, et de manière amovible à la calotte 7 pour permettre à l'utilisateur de placer le casque de protection 6 sur sa tête.The figure 6 presents an embodiment of a protective helmet 6 with at least one connector 1 such as that just described. The protective helmet 6 also comprises a cap 7, and a jugular strap connected directly or indirectly, and removably to the cap 7 to allow the user to place the protective helmet 6 on his head.

Selon un mode de réalisation tel qu'illustré à la figure 6, la première pièce 2 du connecteur 1 peut être connecté à la calotte 7 via une sangle additionnelle, et la deuxième pièce 3 peut être connectée à la sangle jugulaire. Selon un mode de réalisation alternatif non représenté, on peut envisager que la première pièce 2 du connecteur 1 soit reliée à la sangle jugulaire, éventuellement par un élément intermédiaire telle qu'une sangle additionnelle, et que la deuxième pièce 3 du connecteur 1 soit connectée à la calotte 7.According to an embodiment as illustrated in figure 6 , the first piece 2 of the connector 1 can be connected to the cap 7 via an additional strap, and the second piece 3 can be connected to the jugular strap. According to an alternative embodiment not shown, it is conceivable that the first part 2 of the connector 1 is connected to the chinstrap, possibly by an intermediate element such as an additional strap, and that the second part 3 of the connector 1 is connected at the cap 7.

Selon le mode de réalisation illustré à la figure 6, le casque de protection 6 comporte un seul connecteur 1 lié à une sangle frontale 8a, à une sangle occipitale 8b et à la sangle jugulaire 8c. Plus précisément, la sangle jugulaire 8c est connectée à la première pièce 2 via la zone d'attache 2a, et les sangles frontales et occipitales sont connectées à la deuxième pièce via les zones d'attaches 3a.According to the embodiment illustrated in figure 6 , the protective helmet 6 comprises a single connector 1 connected to a front strap 8a, an occipital strap 8b and the jugular strap 8c. More specifically, the jugular strap 8c is connected to the first piece 2 via the attachment zone 2a, and the front and occipital straps are connected to the second piece via the attachment areas 3a.

Dans ce mode de réalisation, lorsque l'élément mobile 5 du connecteur 1 est placé dans la première position, le connecteur est configuré pour empêcher la désolidarisation des première et deuxième pièces lorsque la sangle jugulaire 8c est soumise à une force de traction seuil F1 préférentiellement supérieure à 500 N. La force de traction F2 reçue par le connecteur est moitié moindre, c'est-à-dire de préférence supérieure à 250 N. Le connecteur 1 est donc configuré pour supporter des forces égales à 50% de la force exercée entre le casque de protection 6 et la sangle jugulaire 8c.In this embodiment, when the movable member 5 of the connector 1 is placed in the first position, the connector is configured to prevent the separation of the first and second parts when the chinstrap 8c is subjected to a threshold tensile force F 1 preferably, greater than 500 N. The pulling force F 2 received by the connector is less than half, that is to say preferably greater than 250 N. The connector 1 is therefore configured to withstand forces equal to 50% of the force exerted between the protective helmet 6 and the jugular strap 8c.

La rupture du connecteur 1 permet de libérer la tête de l'utilisateur lorsque l'élément mobile 5 est placé dans la deuxième position, c'est-à-dire dans le cadre d'une utilisation professionnelle. Les première et deuxième pièces 2 et 3 sont alors désolidarisées lorsque la sangle jugulaire 8c est soumise à une deuxième force de traction seuil comprise entre 150 et 250 N. Cela évite à l'utilisateur d'être étranglé par la sangle jugulaire 8c si la calotte 7 est coincée.The rupture of the connector 1 frees the user's head when the movable member 5 is placed in the second position, that is to say in the context of professional use. The first and second parts 2 and 3 are then disengaged when the jugular strap 8c is subjected to a second threshold traction force of between 150 and 250 N. This prevents the user from being strangled by the jugular strap 8c if the cap 7 is stuck.

Selon un mode de réalisation alternatif, la sangle jugulaire 8c peut être reliée d'un côté du casque de protection 6 par le connecteur 1 et être fixée de l'autre côté du casque de protection 6 soit directement, soit par l'intermédiaire d'une boucle de réglage.According to an alternative embodiment, the jugular strap 8c can be connected on one side of the protective helmet 6 by the connector 1 and be fixed on the other side of the protective helmet 6 either directly or via an adjustment loop.

Selon un autre mode de réalisation alternatif (non représenté), le casque de protection 6 peut comprendre plusieurs connecteurs 1 montés en parallèles sur un même côté latéral de la calotte 7. Dans ce cas, les première et deuxième forces de traction seuil sont divisées par le nombre de connecteurs 1 montés en parallèle sur le casque de protection 6.According to another alternative embodiment (not shown), the protective helmet 6 may comprise several connectors 1 mounted in parallel on the same lateral side of the cap 7. In this case, the first and second threshold traction forces are divided by the number of connectors 1 mounted in parallel on the protective helmet 6.

Par exemple, le casque de protection 6 peut comprendre un premier connecteur 1 connectant la calotte 7 à la sangle frontale 8a, et un deuxième connecteur 1 connectant la calotte 7 à la sangle occipitale 8b. Les premier et deuxième connecteurs 1 sont avantageusement placés soit du côté gauche de la calotte 7, soit du côté droit. De cette façon, leurs ruptures permettent la libération de la sangle jugulaire 8c. Dans ce cas de figure, les deux connecteurs 1 sont alors configurés pour que la première force de traction seuil soit supérieure à F1/4, c'est-à-dire préférentiellement supérieure à 125 N, et pour que la deuxième force de traction seuil soit comprise entre 37,5 et 62,5 N.For example, the protective helmet 6 may comprise a first connector 1 connecting the cap 7 to the front strap 8a, and a second connector 1 connecting the cap 7 to the occipital strap 8b. The first and second connectors 1 are advantageously placed either on the left side of the cap 7 or on the right side. In this way, their breaks allow the release of the jugular strap 8c. In this case, the two connectors 1 are then configured so that the first threshold traction force is greater than F 1/4 , that is to say preferably greater than 125 N, and so that the second traction force threshold is between 37.5 and 62.5 N.

Il est donc possible de fournir un casque de protection 6 pouvant être utilisé à la fois pour une activité professionnelle et pour une activité sportive. L'utilisateur prendra garde de placer l'élément mobile 5 du ou des connecteurs 1 dans la première ou la deuxième position selon l'activité effectuée afin d'utiliser le casque dans des conditions optimales.It is therefore possible to provide a protective helmet 6 that can be used both for a professional activity and for a sports activity. The user will be careful to place the movable element 5 or connectors 1 in the first or second position according to the activity performed to use the helmet under optimal conditions.

L'invention concerne également le procédé d'assemblage d'un connecteur 1 tel qu'il vient d'être décrit. Le procédé comporte les étapes suivantes :

  • fournir la première pièce 2, la deuxième pièce 3 et l'élément de connexion 4,
  • connecter mécaniquement la première pièce 2 et la deuxième pièce 3 au moyen de l'élément de connexion 4, de sorte à empêcher la désolidarisation des première et deuxième pièces lorsque lesdites pièces sont soumises à une force de traction inférieure à la deuxième force de traction seuil.
The invention also relates to the method of assembling a connector 1 as just described. The method comprises the following steps:
  • supply the first part 2, the second part 3 and the connection element 4,
  • mechanically connect the first part 2 and the second part 3 by means of the connection element 4, so as to prevent the first and second parts from being detached when said parts are subjected to a lower tensile force than the second threshold traction force .

Claims (14)

  1. Connector (1) comprising:
    • a first part (2) designed to be connected to a crown (7) of a protective helmet (6),
    • a second part (3) designed to be connected to a crown (7) of a protective helmet (6) and mounted in removable manner on the first part (2),
    • a connecting part (4) mechanically connecting the first part (2) and the second part (3), so as to form a first mechanical connection,
    characterized in that it comprises
    • a movable part (5) moving between first and second positions and configured:
    • to prevent the first and second parts (2, 3) from coming detached from one another when said parts are subjected to a first threshold tensile force, when the movable part (5) is in the first position,
    • to enable the first and second parts (2, 3) to be detached from one another when said parts are subjected to a second threshold tensile force of magnitude lower than that of the first threshold tensile force, when the movable part (5) is in the second position.
  2. Connector (1) according to claim 1, wherein the connecting part (4) comprises an independent part having a first end (4a) and a second end (4b) opposite the first end, the first end (4a) being connected to the first part (2) and the second end (4b) being connected to the second part (3).
  3. Connector (1) according to any one of claims 1 or 2, wherein the connecting part (4) is configured to enable the first and second parts (2, 3) to be detached from one another by breaking of the connecting part (4) when the movable part (5) is in the second position.
  4. Connector (1) according to any one of claims 1 to 3, wherein the connecting part (4) is partially positioned in a housing (2d) of the first part (2), and cooperates with clip-fastening means (3d) placed on the second part (3) so as to form the first mechanical connection.
  5. Connector (1) according to any one of claims 1 to 4, wherein the movable part (5) is configured to form an additional mechanical connection between the first part (2) and the second part (3) when it is placed in the first position.
  6. Connector (1) according to claim 5, comprising a stud (2e) configured to cooperate with the movable part (5) so as to form the additional mechanical connection.
  7. Connector (1) according to any one of claims 1 to 6, wherein the movable part (5) is movable in rotation.
  8. Connector (1) according to any one of claims 1 to 7, comprising a closing part designed to close a strap of a protective helmet (6) and/or to adjust its length.
  9. Protective helmet (6) comprising a crown (7), and a chin strap (8c), and at least one connector (1) according to any one of claims 1 to 8.
  10. Protective helmet (6) according to claim 9, wherein the first part (2) of at least one of the connectors (1) is connected to the crown (7) via an additional strap, and wherein the second part (3) of said connector (1) is connected to the chin strap (8c).
  11. Protective helmet (6) according to claim 9, wherein the first part (2) of at least one of the connectors (1) is connected to the chin strap (8c), and wherein the second part (3) of said connector (1) is connected to the crown (7).
  12. Protective helmet (6) according to any one of claims 9 to 11, comprising a single connector (1) and wherein the first threshold tensile force exerted on the chin strap (8c) is greater than 500 N.
  13. Protective helmet (6) according to any one of claims 9 to 12, comprising a single connector (1) and wherein the second threshold tensile force exerted on the chin strap (8c) is comprised between 150 and 250 N.
  14. Assembly method of a connector (1) according to any one of claims 1 to 8, comprising the following steps:
    • providing the first part (2), the second part (3) and the connecting part (4),
    • mechanically connecting the first and second parts (2, 3) by means of the connecting part (4), so as to enable the first and second parts (2, 3) from coming detached from one another when said parts are subjected to a tensile force lower than the second threshold tensile force.
EP16194442.6A 2015-11-03 2016-10-18 Neck strap connector with variable breaking Active EP3165108B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1560496A FR3042954B1 (en) 2015-11-03 2015-11-03 VARIABLE RUPTURE JUGULAR STRAP CONNECTOR

Publications (2)

Publication Number Publication Date
EP3165108A1 EP3165108A1 (en) 2017-05-10
EP3165108B1 true EP3165108B1 (en) 2018-05-23

Family

ID=55542771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16194442.6A Active EP3165108B1 (en) 2015-11-03 2016-10-18 Neck strap connector with variable breaking

Country Status (5)

Country Link
US (1) US10485282B2 (en)
EP (1) EP3165108B1 (en)
CN (1) CN107019279B (en)
FR (1) FR3042954B1 (en)
TR (1) TR201810144T4 (en)

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CN110602962B (en) 2017-05-12 2022-04-15 3M创新有限公司 Strap retainer for attaching a chin strap to a safety helmet
DE102019008045B4 (en) 2019-11-20 2022-12-08 Dräger Safety AG & Co. KGaA Detachable belt connector system
DE102020115361A1 (en) 2020-06-09 2021-12-09 Edelrid Gmbh & Co. Kg Two-part buckle for a chinstrap connection of a safety helmet
US11089831B1 (en) 2020-10-23 2021-08-17 DoubleThree, LLC Incrementally adjustable and pivotable semi-rigid retention strap for a helmet

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Also Published As

Publication number Publication date
FR3042954B1 (en) 2017-12-15
US10485282B2 (en) 2019-11-26
CN107019279B (en) 2021-02-02
EP3165108A1 (en) 2017-05-10
US20170119079A1 (en) 2017-05-04
FR3042954A1 (en) 2017-05-05
CN107019279A (en) 2017-08-08
TR201810144T4 (en) 2018-08-27

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