[go: up one dir, main page]

EP3539402A1 - Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure - Google Patents

Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure Download PDF

Info

Publication number
EP3539402A1
EP3539402A1 EP18161182.3A EP18161182A EP3539402A1 EP 3539402 A1 EP3539402 A1 EP 3539402A1 EP 18161182 A EP18161182 A EP 18161182A EP 3539402 A1 EP3539402 A1 EP 3539402A1
Authority
EP
European Patent Office
Prior art keywords
shock
ribs
channels
absorbing liner
extend
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.)
Withdrawn
Application number
EP18161182.3A
Other languages
German (de)
English (en)
Inventor
Jörn Steffens
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to EP18161182.3A priority Critical patent/EP3539402A1/fr
Priority to EP19708859.4A priority patent/EP3764829B1/fr
Priority to CN201980030324.0A priority patent/CN112203545B/zh
Priority to PCT/EP2019/055969 priority patent/WO2019175084A1/fr
Publication of EP3539402A1 publication Critical patent/EP3539402A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • A42B3/10—Linings
    • A42B3/12—Cushioning devices
    • A42B3/124—Cushioning devices with at least one corrugated or ribbed layer

Definitions

  • the invention is comprised in the field of personal protective helmets.
  • the invention relates to a shock-absorbing liner for a protective helmet, for being integrated between an outer shell of the helmet and an inner surface of said helmet aimed to face the head of the user, said shock-absorbing liner being of the type comprising:
  • the invention also relates to a protective helmet comprising said shock-absorbing liner.
  • the helmets to which the invention refers are personal protective helmets such as, by way of non-limiting examples, motorcycle helmets, bicycle helmets, ski helmets, climbing helmets, american football helmets, ice hockey helmets, baseball helmets, protective helmets for building or civil engineering works, police helmets, military helmets, etc.
  • US7802320 discloses a shock-absorbing liner for a protective helmet of the type indicated above, in which the protuberances of the first part are conical, each of them being oriented with an axial direction normal to an inner curved surface of the liner, and are embedded into the recesses of the second part, which are also conical and oriented in corresponding directions.
  • This particular orientation of the conical protuberances and conical recesses, with an axial direction normal to an inner curved surface to the liner, is aimed to make the shock-absorbing materials of the parts to work mainly at compression when the helmet receives an impact on its outer shell.
  • the shock-absorbing materials of which the parts are generally made are foamed materials or the like having a high compressive strength but low tensile and shear strengths.
  • the manufacturing process of this type of liners usually consists in moulding the first (or second) part in several sub-parts, and subsequently putting together these sub-parts in a second mould in which they integrally form the first (or second) part and in which the second (or first) part is also formed by overmoulding.
  • the liner comprising the first part and the second part is integrally formed, one of these parts being overmoulded on the other one.
  • the purpose of the invention is to provide a shock-absorbing liner on the type indicated above, that can be manufactured in a much simpler manner, and allowing a greater freedom to design the liner, the whole without a loss in the shock-absorbing performance of the liner.
  • shock-absorbing liner of the type indicated above, characterized in that:
  • Helmets have a shock deflecting and dispersing shell and a shock-absorbing liner. Adding ribs to the shock-absorbing liner increases its stiffness which supports the function of the outer shell, as a result the outer shell can be more flexible and therefore lighter.
  • the structure of the ribs and channels and the overlap between the first and the secondary group are two parameters which allow optimizing the shock absorption (the way it absorbs shock) of the shock-absorbing liner.
  • the first part and the second part are moulded apart and can be matched to one another in order to form the shock-absorbing liner, so that the manufacturing process of the liner is much simpler. Since all the protuberances of one group extend in a single demoulding direction, these protuberances are not individually oriented in a normal direction with respect to the curvature of the liner. However, this does not imply a significant decrease of the shock-absorbing performance of the liner, because a group of protuberances can be globally oriented in a normal direction.
  • Another advantage of the invention is that different second parts, which are different for instance in the thickness or in the material of which they are made, can be alternatively matched to a same first part. This allows to easily adapting the performance of the liner, or its shape or size, to a particular design of the helmet, by simply choosing the first and second parts that are matched to form the shock-absorbing liner.
  • At least some of the ribs of the at least one primary group extend in straight planes, and corresponding channels of the at least one secondary group extend in corresponding straight planes.
  • the straight planes can be parallel between them or divergent.
  • the straight planes can extend radially from a central point. It is also envisaged that a rib, and the corresponding channel, has several portions extending each in a different straight plane.
  • At least some of the ribs of the at least one primary group extend in curved planes and corresponding channels of the at least one secondary group extend in corresponding curved planes.
  • These curved planes can be concentric circular, arched or non-uniformly curved, as well as any possible combination thereof. It is also envisaged that a rib, and the corresponding channel, has several portions combining straight planes and curved planes. Due to their multidirectional orientation, curved planes offer superior shock absorbing performance compared to straight planes for certain applications and certain sections of a helmet.
  • the shock-absorbing liner comprises a plurality of said second parts, each matching said at least one first part, each second part covering a different portion of said at least one first part.
  • using multiple second parts for each first part allows optimizing a helmet with various impact zones.
  • the shock-absorbing liner comprises a plurality of said first parts.
  • the first parts can be sized and shaped to be positioned side by side so that they form together a curved thin body.
  • a second part covers at least a portion of two or more first parts. This gives an increased degree of freedom for designing the second parts, since two or more first parts can be used to match different portions of a second part. Moreover, using multiple first parts for a second part allows optimizing various impact zones in the helmet.
  • said at least one first part comprises a plurality of primary groups of ribs, each of said primary groups having a different demoulding direction in which the ribs extend, and each of said primary groups is covered by a different second part.
  • the least one second part comprises a plurality of secondary groups of channels, each of said secondary groups having a different demoulding direction in which the channels extend, and each of said secondary groups covers a different first part.
  • a first part having several primary groups of ribs extending in different demoulding directions can be moulded in one piece by using a complex mould with sliders.
  • a second part having several secondary groups of channels extending in different demoulding directions can be moulded in one piece by using a complex mould with sliders.
  • one of those first or second parts is moulded in one piece, the other is moulded in several pieces so that the shock-absorbing liner can be assembled.
  • the ribs have a tapered cross-sectional shape, with a decreasing width outwardly from the side of the first part, and the channels have a corresponding tapered cross-sectional shape, with a decreasing width inwardly from the side of the second part.
  • the tapered cross-sectional shape is a truncated triangle.
  • a tapered cross-sectional shape of the ribs offer better shock absorbing properties than a rectangular profile
  • the number of said ribs in said at least one primary group is three or more, and the number of said corresponding channels in said at least one secondary group is three or more.
  • At least an insert is sandwiched between the side of the first part and the side of the second part.
  • a sandwich construction allows further optimization of the material or the material composition of each layer.
  • the inserts also allow extending the level of protection, for instance, protection against the effects of oblique impacts on the helmet.
  • said insert is sandwiched between at least one of the ribs and the corresponding channel in which said rib engages. Inserts located between the ribs and the channels can be used for improving the shock absorption performance in small sections of the helmet or for enhancing the overall performance by applying it in larger sections.
  • the first part of the shock-absorbing liner is made of a material or composition that is different from the material or composition of which the second part is made.
  • the two parts can be made of a different polymer or from the same polymer but with different structure, such as EPS (Expanded polystyrene) or other expanding polymer, so that the density is different.
  • EPS Expanded polystyrene
  • the advantage of the invention consists in that first and second parts with different material or composition can be formed and assembled in a particularly easy way, so that greater possibilities for designing the shock-absorbing liner are allowed.
  • different second parts having the same shape but being made of a different material or composition can be provided to alternatively cover a same first part, so that a helmet manufacturer can chose the second part which is more suitable for the intended performance of the liner.
  • At least one from said first part and said second part, more preferably both, is made of an expanded polymer like, for instance, EPS (expanded polystyrene) or EPP (expanded polypropylene).
  • EPS expanded polystyrene
  • EPP expanded polypropylene
  • the invention also comprises embodiments in which there are more parts, other than said first and second parts, that subsequently fit one over another like said first and second parts.
  • the second part can have ribs extending in a demoulding direction of said second part
  • the liner can comprise an integrally moulded third part that has on a side channels extending in a demoulding direction of said third part, so that by translating the third part towards the second part in a direction parallel to said ribs and said channels, the third part matches the second part and said ribs engage into said channels.
  • the invention also relates to a protective helmet, characterised in that it comprises a shock-absorbing liner according to the invention integrated between an outer shell of the helmet and an inner surface of said helmet aimed to face the head of the user.
  • Figs. 1 to 7 show a first embodiment of a shock-absorbing liner 1 according to the invention, as well as a protective helmet (showed schematically in Figs. 3 and 5 ) in which said shock-absorbing liner is integrated.
  • the shock-absorbing liner 1 comprises one first part 2 and four second parts.
  • the four second parts are a front second part 41, a top second part 42 and two side second parts 43.
  • Figs. 1 and 2 only one of the side second parts 43 is shown, the other is symmetrical as can be seen in Fig. 3 .
  • the first part 2 and the second parts 41, 42, 43 are each an integrally moulded part shaped as a curved thin body.
  • all the parts are made of EPS (Expanded polystyrene).
  • the EPS of which the second parts 41, 42, 43 are made has a greater density than the EPS of which the first part 2 is made.
  • the first and second parts can be made of any other expanded polymer different from EPS, or of any other shock-absorbing material or combination thereof, including composites.
  • the first and second parts can differ not only in density, but also in another kind of composition like for instance the content, the distribution or the nature of fillers.
  • material or composition of which the different second parts 41, 42, 43 are made can be the same or different.
  • the first part 2 is intended to form by itself an inner layer of a helmet. With this aim, the first part 2 is an integral part which is generally shaped to cover the head of a user.
  • the outer side 3 of the first part 2 is provided with four primary groups of ribs 6: a front primary group 71, a top primary group 72 and two side primary groups 73 (only one of them is shown in Figs. 1 and 2 ).
  • the ribs 6 extend in height along a same demoulding direction, respectively X1, X2, X3, of the first part 2 and in length along the outer side 3 of said first part 2.
  • each of said primary groups 71, 72, 73 of ribs 6 of the first part 2 there is a corresponding second part 41, 42, 43 provided with a corresponding secondary group 91, 92, 93 of channels 8 extending in depth along a same demoulding direction, respectively X1, X2, X3, of said second part 41, 42, 43 and in length along the inner side 5 of said second part 41, 42, 43.
  • each second part 41, 42 , 43 matches the first part 2 and the ribs 6 of each primary group 71, 72, 73 engage into the channels 8 of each corresponding secondary group 91, 92, 93.
  • Figs. 4 , 6 and 7 show the parts in a disassembled position.
  • the shock-absorbing liner 1 is thus assembled by coupling the second parts 41, 42, 43 and the first part 2 that fit together, so that each of the second parts 41, 42, 43 covers a different portion of the first part 2.
  • Figs. 3 and 5 show the shock-absorbing liner 1 integrated into a protective helmet 11.
  • the helmet 11 is schematically depicted, so that it can have any other composition and shape.
  • the shock-absorbing liner 1 is placed between an outer shell 12 of the helmet 11 and an inner surface 13 thereof aimed to face the head of the user.
  • the helmet 11 has a padding 14, so that said inner surface 13 is the inner surface of the padding 14.
  • the helmet neither has padding nor other kind of protective layers, and in this case the inner surface 13 is directly the inner surface of the shock-absorbing liner 1.
  • the ribs 6 of each primary group 71, 72, 73 extend in parallel straight planes and the corresponding channels 8 of each secondary group 91, 92, 93 extend in corresponding parallel straight planes.
  • the number of ribs in each primary group 71, 72, 73 is three or more, and the number of the corresponding channels 8 in each secondary group 91, 92, 93 is three or more.
  • the front primary group 71 has four ribs 6 and the front secondary group 91 has four corresponding channels 8.
  • the top primary group 72 has six ribs 6 and the top secondary group 92 has six corresponding channels 8.
  • the side primary group 73 has five ribs 6 and the side secondary group 93 has five corresponding channels 8.
  • the ribs 6 have a tapered cross-sectional shape, with a flat truncated top and a decreasing width outwardly from the outer side 3 of the first part 2.
  • the channels 8 have a corresponding tapered cross-sectional shape, with a flat truncated bottom and a decreasing width inwardly from the inner side 5 of the second part 41, 42, 43.
  • the slopes of all the ribs 6 and channels 8 within a same primary group 71, 72, 73, respectively a secondary group 91, 92, 93, are adjusted so that the normal to their surface has a component in the demoulding direction X1, X2, X3 that is always directed out of the first part 2, respectively out of the second part 41, 42, 43, in order to ensure that each of these parts can be demoulded in the demoulding direction X1, X2, X3 and that the second parts 41, 42 43 can be assembled to the first part 2 in the same demoulding direction X1, X2, X3.
  • the slopes of the most eccentric ribs 6 and channels 8 are more pronounced than the ones of the central ribs 6 and channels 8 in each group.
  • first part 2 and possibly also the second parts 41, 42, 43 have openings for ventilation (not shown in the figures).
  • the ribs 6 and the corresponding channels 8 can have many other shapes in section, different from the ones depicted in Figs. 3-7 . They can also have different shapes in the longitudinal direction.
  • Fig. 8 shows an embodiment in which the ribs 6 of the top primary group 72 extend in curved planes, in particular in concentric circular planes.
  • the central rib 6 has a cylindrical shape.
  • the corresponding channels 8 of the top secondary group 92 (not shown in the figures) extend in corresponding concentric circular planes, and there is a central channel 8 with a cylindrical shape.
  • Fig. 9 shows another possible embodiment in which the ribs 6 of the top primary group 72 extend in radial straight planes from a central point.
  • Figs. 10A-10H show in a more schematic manner other possible geometries, among many others.
  • Each of these figures 10A-10H is a schematic top view of a primary group of ribs 6 in the demoulding direction.
  • the different geometries depicted in these figures are shown for illustration purposes. They can be implemented alone or in combination to form ribs 6 and channels 8 with different orientations and shapes in order to adjust the ratio between stiffness and absorption needed for each particular protective helmet.
  • one or several inserts can be sandwiched between the outer side 3 of the first part 2 and the inner side 5 of the second part 41, 42, 43.
  • the inserts can be of any type and material. This includes for instance a layer that extends over all or a part of the matching surface of the first part 2 and the second part 41, 42, 43, as well as a piece which is inserted in a particular location between said first and second parts.
  • the insert can be located in any portion of the matching surface between the first part 2 and the second part 41, 42, 43, not necessary between a rib 6 and a channel 8.
  • the insert is sandwiched between at least one rib 6 and the corresponding channel 8 in which said rib 6 engages.
  • Fig. 11 shows an example in which an insert 10 is a shaped sheet that covers two ribs 6.
  • the insert 10 can be, for instance, a sheet moulded from a composite material or from a polymer, and having a shape that matches the ribs 6.
  • the shock-absorbing liner 1 has a plurality of first parts 2.
  • the different first parts 2 can match one another to form a composed part that is generally shaped to cover the head of the user.
  • a second part can comprise a plurality of secondary groups of channels 8, each of said secondary groups having a different demoulding direction in which the channels 8 extend, and each of said secondary groups covers a different first part 2.
  • These possible embodiments have a general configuration which is opposite to the one depicted in Figs. 1-7 .
  • the second part has different secondary groups and several first parts are provided, each of said first parts covering a different portion of the second part corresponding to each secondary group.
  • the invention is not limited by the number of first parts, the number of primary groups of ribs in each first part, the number of second parts and the number of secondary groups of channels in each second part. They can be freely combined to design a variety of particular shock-absorbing liners intended to be integrated into a variety of protective helmets.

Landscapes

  • Helmets And Other Head Coverings (AREA)
EP18161182.3A 2018-03-12 2018-03-12 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure Withdrawn EP3539402A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18161182.3A EP3539402A1 (fr) 2018-03-12 2018-03-12 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure
EP19708859.4A EP3764829B1 (fr) 2018-03-12 2019-03-11 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure
CN201980030324.0A CN112203545B (zh) 2018-03-12 2019-03-11 用于防护头盔的减震衬垫和包括所述衬垫的防护头盔
PCT/EP2019/055969 WO2019175084A1 (fr) 2018-03-12 2019-03-11 Doublure absorbant les chocs pour casque de protection et casque de protection comprenant ladite doublure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18161182.3A EP3539402A1 (fr) 2018-03-12 2018-03-12 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure

Publications (1)

Publication Number Publication Date
EP3539402A1 true EP3539402A1 (fr) 2019-09-18

Family

ID=61622462

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18161182.3A Withdrawn EP3539402A1 (fr) 2018-03-12 2018-03-12 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure
EP19708859.4A Active EP3764829B1 (fr) 2018-03-12 2019-03-11 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19708859.4A Active EP3764829B1 (fr) 2018-03-12 2019-03-11 Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure

Country Status (3)

Country Link
EP (2) EP3539402A1 (fr)
CN (1) CN112203545B (fr)
WO (1) WO2019175084A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230011532A1 (en) * 2019-12-18 2023-01-12 George Tfe Scp Helmet

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114667077A (zh) 2019-11-14 2022-06-24 米沃奇电动工具公司 安全帽附接系统和安全装备
TWI759762B (zh) * 2020-06-10 2022-04-01 嘉陞國際實業有限公司 一種帽體襯墊結構
CN113892720A (zh) * 2020-06-19 2022-01-07 嘉升国际实业有限公司 一种帽体衬垫结构
USD974663S1 (en) 2020-10-05 2023-01-03 Milwaukee Electric Tool Corporation Hard hat
AU2022232312A1 (en) 2021-03-12 2023-08-24 Milwaukee Electric Tool Corporation Safety headwear systems and accessories

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE836581A (nl) * 1975-12-12 1976-04-01 Dempschaal voor valhelm en valhelm uitgerust met een dergelijke dempschaal
US7802320B2 (en) 2005-06-30 2010-09-28 Morgan Don E Helmet padding

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0613216Y2 (ja) * 1991-01-29 1994-04-06 昭栄化工株式会社 ヘルメット
DE69218661T2 (de) * 1991-05-31 1997-10-02 9001 6262 Quebec Inc Schützende Kopfbedeckung
CA2043725C (fr) * 1991-05-31 1997-08-26 Louis Garneau Casque de protection pour cyclistes
CA2090347C (fr) * 1993-02-25 1997-11-18 Louis Garneau Casque protecteur a coque exterieure flexible et resistante, intercalaire amortisseur souple et coque interieure flexible noyee dans l'intercalaire
JP2000080514A (ja) * 1998-08-31 2000-03-21 Honda Access Corp ヘルメット
CA2290324C (fr) * 1999-11-24 2005-05-24 Bauer Nike Hockey Inc. Casque protecteur ajustable
AUPR060600A0 (en) * 2000-10-06 2000-11-02 Blair, Mary Lynne Protective sports hat insert device
US8296868B2 (en) * 2007-08-17 2012-10-30 Easton Sports, Inc. Adjustable hockey helmet
US8566968B2 (en) * 2011-07-01 2013-10-29 Prostar Athletics Llc Helmet with columnar cushioning
FR3009167B1 (fr) * 2013-08-05 2016-01-01 Salomon Sas Casque
US10736373B2 (en) * 2013-08-13 2020-08-11 Smith Optics, Inc. Helmet with shock absorbing inserts
US9622533B2 (en) * 2014-03-13 2017-04-18 Kranos Ip Corporation Single-layer padding system
US10219573B2 (en) * 2016-01-12 2019-03-05 Ronald A. Podboy Helmet to reduce traumatic brain injuries

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE836581A (nl) * 1975-12-12 1976-04-01 Dempschaal voor valhelm en valhelm uitgerust met een dergelijke dempschaal
US7802320B2 (en) 2005-06-30 2010-09-28 Morgan Don E Helmet padding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230011532A1 (en) * 2019-12-18 2023-01-12 George Tfe Scp Helmet

Also Published As

Publication number Publication date
CN112203545B (zh) 2023-04-07
EP3764829B1 (fr) 2022-05-18
CN112203545A (zh) 2021-01-08
EP3764829A1 (fr) 2021-01-20
WO2019175084A1 (fr) 2019-09-19

Similar Documents

Publication Publication Date Title
EP3764829B1 (fr) Doublure absorbant les chocs d'un casque de protection et casque de protection comprenant ladite doublure
US11864615B2 (en) Helmet with shock absorbing inserts
US9622533B2 (en) Single-layer padding system
US9320311B2 (en) Helmet impact liner system
EP2523573B1 (fr) Casque comprenant un composant de renforcement de surface à éléments d'accrochage intégrés
EP3048918B1 (fr) Casque flexible à plusieurs couches
AU2020279251B2 (en) Helmet impact attenuation liner
EP3858179B1 (fr) Casque de vélo
US20100258988A1 (en) Embodiments of Lateral Displacement Shock Absorbing Technology and Applications Thereof
US11337481B2 (en) Helmet with foam layer having an array of holes
US20150033456A1 (en) Helmet
US9956471B2 (en) Protective structure for sporting equipment
US20180125142A1 (en) Partial Outer Hard Shell Helmet with Fiber Filled Plastic
WO2023275741A1 (fr) Couche d'absorption d'énergie pour casque de protection et casque de protection respectif
CZ34035U1 (cs) Odlehčená bezskořepinová přilba

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20200313