EP3165108B1 - Connecteur de sangle jugulaire a rupture variable - Google Patents

Connecteur de sangle jugulaire a rupture variable 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
Authority
EP
European Patent Office
Prior art keywords
connector
parts
protective helmet
strap
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16194442.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3165108A1 (fr
Inventor
Antoine Coursimault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zedel SAS
Original Assignee
Zedel SAS
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Filing date
Publication date
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Publication of EP3165108A1 publication Critical patent/EP3165108A1/fr
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Publication of EP3165108B1 publication Critical patent/EP3165108B1/fr
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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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Helmets And Other Head Coverings (AREA)
EP16194442.6A 2015-11-03 2016-10-18 Connecteur de sangle jugulaire a rupture variable Active EP3165108B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1560496A FR3042954B1 (fr) 2015-11-03 2015-11-03 Connecteur de sangle jugulaire a rupture variable

Publications (2)

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

Family

ID=55542771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16194442.6A Active EP3165108B1 (fr) 2015-11-03 2016-10-18 Connecteur de sangle jugulaire a rupture variable

Country Status (5)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016214526A1 (de) 2016-08-05 2018-02-08 Uvex Arbeitsschutz Gmbh Schutzhelm
GB2557307B (en) * 2016-12-06 2021-10-13 Jsp Ltd Safety helmets
US11026464B2 (en) 2017-05-12 2021-06-08 3M Innovative Properties Company Strap retainer for attaching a chinstrap to a safety helmet
DE102019008045B4 (de) 2019-11-20 2022-12-08 Dräger Safety AG & Co. KGaA Lösbares Gurtverbindersystem
DE102020115361A1 (de) 2020-06-09 2021-12-09 Edelrid Gmbh & Co. Kg Zweiteilige Schnalle für eine Kinnriemenverbindung eines Sicherheitshelms
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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US4912950A (en) * 1988-10-03 1990-04-03 Illinois Tool Works, Inc. Lockable buckle
US5077839A (en) * 1990-08-06 1992-01-07 Illinois Tool Works Inc. Helmet chain strap buckle
JPH0626518U (ja) * 1992-09-09 1994-04-12 吉田工業株式会社 バックル
US5383257A (en) * 1993-04-05 1995-01-24 American Cord & Webbing Co., Inc. Co-injection molded buckle
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US8353066B2 (en) * 2006-02-04 2013-01-15 Artisent, Llc Easily adjusted retention system for helmets
US7600302B2 (en) * 2006-07-17 2009-10-13 James Michael Dillner Safety buckle for child seat and the like
CN200994477Y (zh) * 2006-08-04 2007-12-26 明门实业股份有限公司 扣具
US20110072547A1 (en) * 2009-09-03 2011-03-31 Mine Safety Appliances Company Protective Headwear
CN104883919B (zh) * 2012-12-28 2017-10-13 Ykk株式会社 连结件
US10226106B2 (en) * 2015-03-27 2019-03-12 Filip Postolek Locking buckle

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Also Published As

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

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