WO2005051114A2 - Insert de protection pour un couvre-chef - Google Patents

Insert de protection pour un couvre-chef Download PDF

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Publication number
WO2005051114A2
WO2005051114A2 PCT/EP2004/013389 EP2004013389W WO2005051114A2 WO 2005051114 A2 WO2005051114 A2 WO 2005051114A2 EP 2004013389 W EP2004013389 W EP 2004013389W WO 2005051114 A2 WO2005051114 A2 WO 2005051114A2
Authority
WO
WIPO (PCT)
Prior art keywords
insert according
protective insert
shells
shell
protective
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.)
Ceased
Application number
PCT/EP2004/013389
Other languages
German (de)
English (en)
Other versions
WO2005051114A3 (fr
Inventor
Jörg Dogondke
Gordian Gasch
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.)
Life Protection Technologies & Co KG GmbH
Original Assignee
Life Protection Technologies & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2003155987 external-priority patent/DE10355987B4/de
Application filed by Life Protection Technologies & Co KG GmbH filed Critical Life Protection Technologies & Co KG GmbH
Publication of WO2005051114A2 publication Critical patent/WO2005051114A2/fr
Publication of WO2005051114A3 publication Critical patent/WO2005051114A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A42B—HATS; HEAD COVERINGS
    • A42B1/00—Hats; Caps; Hoods
    • A42B1/04—Soft caps; Hoods
    • A42B1/08—Soft caps; Hoods with protection against blows
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B7/00—Fastening means for head coverings; Elastic cords; Ladies' hat fasteners

Definitions

  • the invention relates to a protective insert for a head covering, in particular for integration into a conventional head covering, such as a cap or a hat.
  • a protective insert is known for example from DE 164 8274 U.
  • the headgear known from DE 164 8274 U namely a peaked cap, has an insert made of drawn vulcanized fiber to protect it from impact or shock.
  • the protective use should only cause a slight increase in the weight of the headgear and should not be visible from the outside.
  • the energy-absorbing properties of the protective insert are only very slight.
  • the invention has for its object to provide a protective insert for a conventional headgear, which has particularly good damping properties despite the compact, weight-saving structure. Another task is to provide a protective insert for headgear that is particularly comfortable to wear.
  • This object is achieved according to the invention by a protective insert with the features of claim 1.
  • This protective insert has a two- or multi-layer structure, a flexible connecting material being arranged between the individual, spaced apart shells. Both the outer and the inner shell, possibly also middle shells, have openings. The total joining area occupied by the joining material on the outer surface of the inner shell is less than the outer surface of the inner shell minus the sum of the area of the openings of the inner shell and the area of the openings of the outer shell.
  • the connecting material is preferably distributed at least approximately uniformly between the shells.
  • the dimensional stability of the protective insert is based mainly on the material properties of the shells, at least one of the shells, preferably the
  • the openings of the inner shell are offset relative to the openings of the outer shell.
  • the protective insert thus has a sufficient protective effect against narrow or pointed objects, in particular also against projectiles from firearms.
  • the openings, which are arranged offset from one another, are connected by volume regions of the gap space in which there is no connecting material. The ventilation function of the protective insert is thus combined in a particularly advantageous manner with its protective function.
  • At least one of the shells of the protective insert is preferably made of a fiber-reinforced material, in particular a fiber composite material with carbon, Keflar, glass fiber and / or Aramit.
  • a fiber-reinforced material in particular a fiber composite material with carbon, Keflar, glass fiber and / or Aramit.
  • the shape of the protective insert can basically be adapted to the shape of the headgear in which the protective insert is permanently or removably integrated. If the headgear has a chin strap, this is preferably provided for attachment to at least one of the shells, for example at two or four attachment points. As explained in more detail below, it is also possible, if this is not used by the wearer of the headgear, to hold the chin strap in a space formed by the protective insert, for example in the form of a channel integrated into the headgear.
  • connection material Any material with which an overall elastic structure of the protective insert can be achieved, for example a tough gel, rubber or a rubber-like material, and / or a foamed material is suitable as the connecting material between the shells such as foamed polystyrene or polyurethane.
  • the connecting material can have several layers or areas of different damping and elastic properties.
  • the connection material either forms a single, coherent, for example network-shaped connection area between the shells or a plurality of, for example strip-shaped, connection areas which are separate from one another.
  • the connecting areas are preferably implemented as individual, for example four, eight or twelve, spacers which are connected to the shells by adhesive and which have a regular, in particular circular, shape.
  • the dimensions of the protective insert are preferably chosen such that it is not visible as part of the headgear or at least does not appear to be a nuisance.
  • the gap width between the shells is preferably at least 1.5 mm and at most 10 mm, preferably at most 3 mm, in particular about 2 mm.
  • the wall thickness of each shell is preferably between 0.3 mm and 2 mm, in particular between 0.5 mm and 1.5 mm, the outer shell being stronger than the inner shell in the case of different wall thicknesses of the shells.
  • the sum of the wall thicknesses of the shells preferably corresponds to at least a quarter, in particular at least half, and at most twice the gap width.
  • the thickness of the protective insert ie the sum of the gap width or gap widths and wall thicknesses is preferably at least 2.5 mm and at most 10 mm, particularly preferably at most 6 mm.
  • the average weight per unit area of the protective insert is preferably at least 8 g / dm 2 and at most 120 g / dm 2 , in particular at most 80 g / dm 2 , for example up to 40 g / dm 2 .
  • a particularly preferred range of the average basis weight of the protective insert is between 10 g / dm 2 and 30 g / dm 2 .
  • the connecting material has a particularly low proportion of weight in the protective insert: the average basis weight of the connecting material located between the shells, that is to say the average basis weight of the material arranged in the gap including free volume areas, which contribute to lowering the average basis weight, corresponds in one preferred embodiment to at most a quarter, in particular at most one eighth, for example se a tenth of the total basis weight of the shells surrounding the connecting material.
  • the density of the material is preferably at least 1 g / cm 3 and at most 3 g / cm 3 , in particular between 1.4 g / cm 3 and 2.7 g / cm 3 , whereby both or all shells do not necessarily have the same density. If the density of the different shells differs, this preferably increases towards the outer shell.
  • a gap space is formed in the headgear between the outer shell and the inner shell stored therein, which at the same time forms a receiving space for a holding strap, the holding strap preferably being stored in an inactive position in the gap space and resiliently supported on a spring element ,
  • the strap serving as a fixing device for the headgear on the head of its wearer can be designed in various ways. It can have a flat cross section like a belt. However, the strap can also have a circular cross-section like a cord.
  • the belt can be made of a wide variety of materials, such as leather, a textile fabric or a wire mesh.
  • the belt can also be designed as a metallic chain. Thus, all embodiments of belt-like, strand-like or chain-like structures are to be subsumed under the term straps, which are suitable for holding a headgear on the head of the person wearing it.
  • An inventive feature of a headgear designed in this way, in particular in combination with the features of claim 1, is the fact that the strap is arranged on the headgear in an inactive position such that it is almost invisible to the viewer from the outside. Since the headgear consists of an inner shell and an outer shell spaced apart from the inner shell, the space between the shells being only partially filled with connecting material, the cavity which inevitably arises between the shells is also used as a receiving space for the holding strap. The cavity between the outer shell and the inner shell thus has a double function.
  • the protective insert of the headgear with retractable strap does not necessarily have a completely double-shell structure.
  • the strap is mounted in the headgear in such a way that it is neither visible on the inside nor on the outside.
  • the strap can be located in a channel that is embedded in the damping material of the protective headgear. It is also possible to arrange a channel for guiding the belt on the outside of a protective shell.
  • the spring element which pulls the belt into the gap between the shells of the protective insert or into a channel formed in some other way, is made, for example, of rubber or metal, in particular stainless steel.
  • a particularly long spring travel with a compact structure is preferably realized by a spiral spring.
  • the spring element In order to enable the spring element to be pulled out with low friction, it is preferably mounted in a housing in which there is at least one bearing element made of plastic, in particular polytetrafluoroethylene, contacting the spring element.
  • the force exerted by the spring element on the belt should, on the one hand, be sufficient when the belt is maximally pulled into the protective insert to prevent the belt from slipping out of the protective insert unintentionally, for example in the event of vibrations, and on the other hand also when the belt is fully extended not be too big to always ensure a high level of comfort.
  • the spring tension of the spring element differs within the entire working range, which is limited by the extreme positions of the belt mentioned, by no more than a factor of 3, for example by a factor of about 2. If the force exerted by the spring element has a mechanical ratio the belt is transmitted, the specified ratios of the forces relate to the forces acting on the belt.
  • the advantage of the invention is, in particular, that a protective insert is used for activities, in particular sporting activities, in which the wearing of a helmet is often avoided for practical or aesthetic reasons.
  • Send headgear is available, which combines great variation in terms of shape in a particularly advantageous manner with a high wearing comfort, in particular due to its low weight and good ventilation, with a wide-ranging protective function achieved by means of a multi-layered, but at the same time compact design.
  • Fig. 2 is a vertical section of the protective insert
  • FIG. 4 a protective insert with a holding strap in a partially sectioned illustration
  • FIGS. 5 to 9 a protective insert according to FIG. 4 in different views
  • FIGS. 11a, b, c, d a pretensioning device for the strap of the protective insert according to FIG. 10 in perspective views and various sections
  • FIGS. 12a, b, c a housing shell the pretensioning device according to FIGS. 11a-d,
  • FIG. 13a, b, c, d a coil of the pretensioning device according to FIG. 11 a-d
  • FIG. 14a, b a closure part of the pretensioning device according to FIGS. 11a-d.
  • FIGS. 1a to 1c show in front view, top view and side view a protective insert 1 for a conventional headgear, not shown, for example a baseball cap, a hat or a cap. Ventilation openings that are visible from the outside are designated as openings 2, while further, internal ventilation openings 2a are offset relative to the outer openings 2 and are only indicated in broken lines in FIGS. 1a to 1c.
  • An optional chin strap which can be fastened to the protective insert 1 at two or four fastening points, for example with push buttons, is not shown.
  • neck protection can be provided on the headgear, for example.
  • the two-shell structure of the protective insert 1 is shown in FIGS. 2 and 3a and 3b.
  • the protective insert 1 comprises an outer shell 3 and an inner shell 4, which are made of a fiber-reinforced material, namely a plastic reinforced with Keflar, and enclose between them a gap space 5 with a gap width S of 2 mm.
  • a connection material 6 in the form of elastic, plate-shaped spacers made of an adhesive at individual, approximately uniformly distributed locations foamed plastic or similar compliant material, for example so-called foam rubber.
  • the entire composite of connecting material 6 and shells 3, 4 is also referred to as the shell structure 7 and has a weight per unit area of approximately 15 g / dm 2 to 40 g / dm 2, indicated by the shells 3, 4, their density in the range between 1.4 g / cm 3 and 2.7 g / cm 3 , have a share of more than 80%.
  • the spacers 6, generally also referred to as connection areas between the shells 3, 4, take up an overall area in the gap space 5 which is substantially less than half, preferably less than 15%, of the outer surface of the inner shell 4, the said one Surface due to the thin-walled design of the protective insert 1 with a total wall thickness W of the shell structure 7 of not more than 5 mm approximately corresponds to the inner surface of the outer shell 3.
  • the surface areas of the outer surface of the inner shell 4 which are not surrounded by connecting material 6 are overall larger than the sum of the areas of the openings 2 of the outer shell 3 and the areas of the openings 2a of the inner shell 4.
  • both shells 3, 4 have a total about the same size, offset relative to each other ventilation openings 2.2a.
  • the protective insert 1 is ventilated very well overall. Even with large ventilation openings 2.2a, the protective insert 1 is bullet-proof against firing with small-caliber weapons and offers good protection against sharp-edged or pointed objects. At the same time, the protective insert 1 is also useful in the sense of a helmet, particularly because of its double-walled, deformable structure. The protective insert 1 thus combines a high level of comfort with various protective mechanisms.
  • FIGS. 3a and 3b show a comparison of FIGS. 3a and 3b.
  • 3a shows a section of the protective insert 1 in a mechanically unloaded state
  • FIG. 3b shows a force action, symbolized by an arrow drawn with a frame.
  • the force acting approximately vertically on the outer shell 3, as illustrated by several arrows, is particularly well distributed in the tangential direction, that is to say on larger surface areas, by the sandwich structure of the protective insert 1.
  • Both the at least slightly elastically deformable outer shell 3 and the connecting material 6 contribute to the dynamic absorption of the acting force.
  • the inner shell 4 remains largely undeformed in the load state shown. Even with higher acting forces, the gap 5 between the shells 3, 4 is not completely closed.
  • the connecting material 6 is distributed approximately uniformly overall in the gap space 5, the outer shell 3 being floatingly supported on the inner shell 4.
  • the inner shell 4 can have a lining (not shown).
  • the outer shell 4 is preferably covered with an air-permeable material, which enables sufficient ventilation through the openings 2, 2a, or surrounded in some other way.
  • FIGS. 4 to 9 A further development of a protective insert 1 for a headgear - in this case in the form of a visor cap - is shown in FIGS. 4 to 9, the inner shell 4 and the outer shell 5 being shown in FIG 5 to 9, the inner shell 4 is dash-dotted, while the outer shell 5 is drawn in with a solid line.
  • a holding strap provided with the reference number 10 in FIG. 4, also referred to briefly as a strap, is in its inactive position, as it were, embedded in the cavity designated as the gap space 5 between the outer shell 3 and the inner shell 4. To transfer it into its active position, the belt 10 is simply pulled out of the gap 5 in the pulling direction 11 in order to get into its active position.
  • the belt is divided in two into a right half of the belt 12 viewed from the front and a left half of the belt 13.
  • the right half of the belt 12 and the left half of the belt 13 are simply in the pulling direction 11 pulled out of the gap space 5 and moved into its fixing position.
  • closure elements are arranged for closing the belt.
  • closure elements can be, for example, a snap fastener, a belt-like form-fitting fastener or a Velcro fastener.
  • eyelet closures known from vehicle helmets that is to say all possible forms of belt closures, can also be used.
  • each of the belt halves 12, 13 is connected at the end to a spring element 15.
  • the belt halves 12 and 13 are closed, the belt halves 12 and 13 are pulled out of the gap space 5 against the spring pressure of the respective spring element 15.
  • the spring force then acting on the belt halves 12 and 13 automatically leads to the belt halves 12, 13 being pulled back into their starting position into the gap space 5 which acts as the receiving space after being released from the spring force.
  • it is a self-winding belt in the manner of an automatic belt in a motor vehicle.
  • guide elements for example in the form of a Guide channel 18 (FIG. 9) for the belt 10 or the belt halves 12, 13 can be arranged in the gap space 5.
  • FIG. 4 shows the basic structure of the headgear with the double-shell structure and integrated holding strap 10.
  • FIG. 5 shows the same view in a reduced form. 4 and 5 show the belt 10 in its inactive position.
  • FIG. 6 shows a side view according to arrow III in FIG. 5.
  • FIG. 6 again the belt 10 and the closure end 16 of the belt 10 configured as a closure can be seen.
  • FIG. 6 also shows the holding strap 10 in its inactive position. 7 and 8 indicate the position of the retaining strap 10 in its open position. In this open position, the holding strap 10 can be closed with its closure ends 16 in the region of the chin of the headgear wearer.
  • the belt halves 12 and 13 are pulled in the pulling direction 11 and closed with the closure ends 16.
  • 8 again shows a side view of the headgear according to arrow IV in FIG. 7.
  • FIG. 9 shows a top view of the headgear according to FIGS. 4 to 8 with an incorporated guide channel 18 for the belt 10.
  • the structure of the protective insert 1 of the headgear according to FIGS. 4 to 9 corresponds to that of the exemplary embodiment 1a to 3b.
  • the protective insert 1 according to FIGS. 1a to 3b can also have a holding strap 10 (not shown).
  • FIG. 10 to 14b show a protective insert 1 for a head covering, in which the spring element 15 in the form of a spiral spring is integrated in a pretensioning device 20.
  • Each belt half 12, 13 of the holding belt 10 is connected by means of a band 21, which is guided over a deflection area 22, to a pretensioning device 20 arranged in each case in the lateral area of the protective insert 1.
  • the belt halves 12, 13 are each guided in a guide channel 18, which is located in the gap 5.
  • the pretensioning devices 20 are located within the gap space 5.
  • the belt halves 12, 13 each have closure ends 16, which are designed as grip pieces and at the same time ensure that the belt halves 12, 13 do not are completely drawn into the gap 5, that is, serve as a stop on the guide channel 18.
  • a Velcro fastener is provided to fasten the belt halves 12, 13.
  • a snap lock as is customary, for example, in motorcycle helmets, is also suitable for locking the strap halves 12, 13.
  • 11a to 11d show the structure of the pretensioning device 20 in detail.
  • This is integrated in a housing 23 and is composed of a housing shell 24, the spring element 15 located therein, a coil 25, two ring disks 26 made of polytetrafluoroethylene as bearing elements and one Closure element 27.
  • the bearing elements 26 enable low-friction rotation of the spool 25, on which the band 21 is wound in a manner not shown.
  • the embodiment shown with separate belts 21, to which the belt halves 12, 13 are connected has the advantage, however, that the belts 21, for example made of metal, can have a particularly small cross-section and thus enable a very compact construction of the pretensioning devices 20.
  • the pretensioning device 20 has the overall shape of a flat cylinder with an outer diameter D of 35 mm and a height H of 4.75 mm.
  • the housing shell 24 of the pretensioning device 20 is made of light metal, but can also be made of plastic.
  • the spiral spring 15 is greased with an anti-corrosion agent and has connection hooks 28 at the inner and at the outer end, which are provided for connection to the housing shell 24 or to the coil 25.
  • the spring element 15 (FIGS. 11a to 11d) is a spiral spring with the dimensions 2.5 x 0.22 x 1200 mm. With the belt halves 12, 13 completely retracted, as shown in FIG. 10, the spiral spring 15 is wound with three turns and generates a torque of at least 3.3 Ncm. Sufficient pre-tensioning of the belt halves 12, 13 is thus always provided. at When the belt halves 12, 13 are fully extended, the spiral spring 15 describes seven turns and generates a torque of at most 6.5 Ncm. Thus, the maximum force exerted by the pretensioning device 20 is a maximum of approximately twice the lowest force exerted within the working range. Textured, austenitic spring steel (material no. 1.4310) is used as the material for the spiral spring 15.

Landscapes

  • Helmets And Other Head Coverings (AREA)

Abstract

L'invention concerne un insert de protection (1) pour un couvre-chef, comprenant une coque intérieure (4) pourvue d'un certain nombre d'ouvertures intérieures (2a), une coque extérieure (3) espacée de la coque intérieure (4) et pourvue d'un certain nombre d'ouvertures extérieures (2), un matériau de liaison flexible (6) placé entre les coques (3, 4), la surface de liaison totale occupée par le matériau de liaison sur la surface extérieure de la coque intérieure (4) étant inférieure à la surface extérieure de la coque intérieure (4) après déduction de la somme des surfaces des ouvertures intérieures (2a) et des ouvertures extérieures (2).
PCT/EP2004/013389 2003-11-27 2004-11-25 Insert de protection pour un couvre-chef Ceased WO2005051114A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10355987.6 2003-11-27
DE2003155987 DE10355987B4 (de) 2003-11-27 2003-11-27 Schutzeinsatz für eine Kopfbedeckung
DE202004010044.4 2004-06-26
DE202004010044 2004-06-26

Publications (2)

Publication Number Publication Date
WO2005051114A2 true WO2005051114A2 (fr) 2005-06-09
WO2005051114A3 WO2005051114A3 (fr) 2006-04-27

Family

ID=34635120

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/013389 Ceased WO2005051114A2 (fr) 2003-11-27 2004-11-25 Insert de protection pour un couvre-chef

Country Status (1)

Country Link
WO (1) WO2005051114A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3222681C2 (de) * 1982-06-16 1985-04-18 Egon 4830 Gütersloh Busch Schutzhelm und Verfahren zum Herstellen von Schutzhelmen
US4845786A (en) * 1987-06-24 1989-07-11 Chiarella Michele A Lightweight molded protective helmet
DE69918869T2 (de) * 1999-12-21 2005-07-21 Neuroprevention Scandinavia Ab Schutzhelm
JP3765377B2 (ja) * 2000-04-04 2006-04-12 本田技研工業株式会社 ヘルメット

Also Published As

Publication number Publication date
WO2005051114A3 (fr) 2006-04-27

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