EP2207446B1 - Procédé de fabrication d'un casque de protection - Google Patents

Procédé de fabrication d'un casque de protection Download PDF

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Publication number
EP2207446B1
EP2207446B1 EP08839938A EP08839938A EP2207446B1 EP 2207446 B1 EP2207446 B1 EP 2207446B1 EP 08839938 A EP08839938 A EP 08839938A EP 08839938 A EP08839938 A EP 08839938A EP 2207446 B1 EP2207446 B1 EP 2207446B1
Authority
EP
European Patent Office
Prior art keywords
helmet
tape
section
clip
fitment
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
EP08839938A
Other languages
German (de)
English (en)
Other versions
EP2207446A1 (fr
Inventor
Jacques William Forrest
Gary Martin Rose
Christopher Bryson Garcin
Peter Lawrence Anns
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.)
Centurion Safety Products Ltd
Original Assignee
Centurion Safety Products Ltd
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 GB0720441A external-priority patent/GB0720441D0/en
Priority claimed from GB0812963A external-priority patent/GB0812963D0/en
Application filed by Centurion Safety Products Ltd filed Critical Centurion Safety Products Ltd
Priority to EP13154549.3A priority Critical patent/EP2591690B1/fr
Priority to EP11007299A priority patent/EP2399473A3/fr
Publication of EP2207446A1 publication Critical patent/EP2207446A1/fr
Application granted granted Critical
Publication of EP2207446B1 publication Critical patent/EP2207446B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a method of manufacturing safety helmet.
  • it pertains to a helmet which can be easily assembled.
  • Safety helmets also referred to as hardhats are well known and widely used in a diverse range of industries.
  • the helmets are for protection to the wearer's head to protect against falling objects and also against obstacles which are located at head height and which can easily cause accidental damage as persons move about a workplace.
  • the helmets can in addition be employed as a support means for further safety elements.
  • provision is normally provided, often as part of the helmet's structure to attach ear defenders, reflective markers, identification labels etc. It is important when making such provision that the further safety elements can be easily replaced if required, for example for worn or damaged elements.
  • the material from which the helmets are formed must first and foremost therefore be impact resistant. However, they must allow the helmet to be worn over prolonged periods without causing undue discomfort to the wearer. This latter criterion not only applies to the physical aspects of the helmet rubbing against the person's scalp, but can also apply to less obvious considerations. For example, unless ventilation is included, the helmet can trap heat and moisture in the volume above the wearer's head.
  • a helmet comprises a hard plastic shell which ultimately serves as the protecting element of the helmet.
  • a number of tapes need to be secured within the inside of the helmet. Said tapes are secured in place by means of an adhesive, ultrasonic welding, sewing or a support component which is secured to the shell through specially designed fitments, fixing the tapes between the support component and the shell.
  • the tapes form thereby a flexible web which engages the wearer's head, keeping the helmet in position and also providing a cushioning effect if the helmet is struck.
  • GB 850,529 discloses a helmet where the straps are held in position by support components.
  • Assembly of the completed helmet from the components can therefore be time consuming. Moreover, the assembly is normally done by specialists on site at the place of manufacture. The assembled helmets are therefore not easily transported in a way which maximises space as the helmets do not stack well and include empty volume.
  • helmets which enable secondary fixing mechanisms to be included, allowing additional features to be incorporated into a helmet.
  • additional features include reflectors, pencil holders and the like.
  • the flexibility to include these secondary fixing mechanisms is limited due to the problems they would cause during the moulding step.
  • a method of manufacturing a safety helmet including the steps of;
  • a helmet can therefore be more rapidly produced than previously was the case.
  • the support tape comprises a plurality of tape sections secured together about the central region of each tape and particularly preferably, each tape used in a helmet is of the same length. As a common tape length is used, manufacturing and assembly times are reduced.
  • the pushing of the tape engaging means against the upper helmet shell traps a tape in position to prevent the tape's movement.
  • the tape includes one or more apertures defined in the end regions enabling the tape to be fitted over corresponding locating means on the tape-engaging means.
  • the fitment of a tape is thereby facilitated and the risk of the tape slipping during helmet assembly is reduced.
  • the tape further optionally includes two apertures which number reduces twisting of the tape but does not weaken the tape.
  • the or each locating means is a peg.
  • the free end of each peg has a portion of conical cross-section, to give an arrow-like appearance, the basal portion of the conic portion being of greater diameter than that of the peg. The design enables a tape to easily pass over the conic portion onto the peg, but not easily be removed.
  • the interior of the shell includes downwardly depending, parallel walls defining an internal volume, into which the lower section, including the engagement means can be fitted, the lower section and the walls including securing means to resist separation.
  • the upper shell preferably comprises a ventilation means, the ventilation means including an internal channel defined by the roof of the helmet, the channel being wider at a forward end than the rearward end and being connected by a rearward aperture to the exterior of the helmet. Ventilation is thereby provided allowing movement of heat and moisture out of the volume of the shell and the wearer's head.
  • the greater width of the forward end compared with the rearward end providing a pressure differential drawing air from within the shell and out of an aperture.
  • the rearward aperture is further preferably orientated in a downward direction, to minimise the ingress of material from the outside.
  • the lowest point of the tunnel is optionally located above the highest point of the rearward aperture to prevent fluid flowing from outside the helmet onto the wearer's head.
  • the lower helmet portion includes fitment means enabling accessories such as reflectors, neckshields, pencil holders and the like to be attached.
  • Said fitment means are further optionally apertures engaging tabs on an accessory.
  • the helmet 1 can be seen to include a number of features which are common to conventionally made helmets.
  • the shell 10 of the helmet 1 is formed of a rigid impact resistant and non-electrically conducting plastics material.
  • the frontpiece 11 or badging area is flat and can be used to identify the wearer or the company represented, by affixing a label thereto.
  • a peak 12, below the frontpiece 11 acts to prevent injury to the wearer's face and eyes from material falling from above.
  • the helmet 1 includes a ventilation means.
  • a ventilation ridge 13 runs from a front portion of the top of the helmet 1 towards a rearward exterior opening into the inside of the helmet 1 at aperture 14.
  • the ridge 13 defines an internal channel 14a running from the front towards the rear of the helmet 1. Said channel, opening to the outside at the aperture 14 is larger in width at the forward interior end than at the rearward end, and is also larger than the aperture 14.
  • the channel 14a therefore connects the interior volume at the top of the helmet 1 with the outside.
  • the aperture 14 is orientated downwardly to minimise ingress of material through the aperture 14. Heat and moisture which would otherwise accumulate above the wearer's head are thereby removed.
  • the aperture 14 together with the narrowing of the channel 14a towards that aperture 14 act to produce a slight lowering of pressure which draws air from the interior volume of the helmet and aids the cooling process.
  • An additional optional exterior channel 16 is included to aid run off of moisture from the helmet 1.
  • a stopper or bung can be employed to close the hole for example, to minimise the risks where there is a danger of hot materials splashing in to the aperture.
  • a stopper or bung can be used to prevent the user's head from becoming too cold.
  • a supporting structure - often referred to as a cradle - is fitted inside the shell 10 and acts as a support for a number of tapes which span the internal volume of the shell 10.
  • the tapes combine together to form a web, which web of tapes acts to support the helmet when in use and also to absorb forces impacting the helmet.
  • the tapes Prior to insertion into the helmet shell the tapes, usually three in number, are sewn together at a common point, approximately central to each tape.
  • the method of assembly of a helmet according to the invention described herein facilitates the processes involved.
  • the method also allows for all the tapes to be used to be of the same length, reducing assembly time and lowering manufacturing costs.
  • the helmet shell 60 is formed from two separate sections 61,62.
  • the upper section 61 includes the ventilation tunnel 14a indicated above, although this feature is not essential to the working of the method of assembly.
  • complementary features on the upper section 61 enable the invention to function.
  • tape securing elements 63 are located at intervals around the lower section 62.
  • Each securing element 63 has an outwardly facing planar surface 64.
  • Two pegs 65 project upwardly from the securing element 63 which engage the end regions of a tape 66.
  • holes (not illustrated) corresponding to the diameter and separation of the pegs 65 can be formed in the tape 66.
  • the lower section 61 has six securing elements 63, enabling three tapes 66 to be fitted combining together to form a supporting web inside the helmet 60.
  • the securing elements 63 By suitable location of the securing elements 63, the distance between diametrically opposed elements 63 can be made the same, enabling therefore only one length of tape 66 to be used. Such standardisation reduces production and assembly costs.
  • a push-fit fixing mechanism is provided.
  • Male fixing tabs are supplied on the lower portion 62.
  • Said tabs are formed of a plastics material and are partially resilient.
  • the corresponding female elements on the upper section 61 engage the male tabs, and vice versa, to provide a firm fitment.
  • the resilient nature of the tabs enables the two sections 61,62 to be separated only with difficulty. The temptation for a wearer to carry out repairs if one section is damaged is therefore reduced: such repairs often being dangerous as, following an impact, weakening of the shell can occur which is not visible, but renders the helmet unsafe with regard to its being used further.
  • the one-way fit also provides the helmet as a coherent unit comparable to conventional helmets.
  • the upper section 61 has a double skin 67,68 which both guides the lower section 62 into position and also subsequently strengthens the completed unit.
  • an upper section 61 is selected and positioned such that the other elements can be added thereto.
  • a lower section 62 is selected along with three tapes 66 of equal length.
  • the pegs 65 are located within the holes at the end of each tape 66, with the tapes 66 thereby secured to the securing elements 63 on opposing sides of the lower section 61.
  • the upper and lower sections 61,62 are then brought together. In so doing the securing elements 63 pass between the walls of the double skins 67,68 carrying the tape 66. The free ends of a tape 66 are thereby sandwiched between the planar face 64 of a securing element 63 and the outer skin 68. Once the two sections 61,62 are clicked into their final position, the tapes 66 are held firmly in position to form a supporting web. The helmet 60 is then ready for use.
  • peg An additional embodiment, of peg is shown in Figures 10 and 11 .
  • the pegs 110 have, in cross-section, and arrow-head configuration. Once the peg 110 has passed through the tape 66 therefore the peg 110 is difficult to remove and almost impossible without irreparably damaging the tape 66.
  • a further feature displayed by the helmet 60 is the neck guard 70, which is included as an extension of the lower section 62.
  • a supporting web can be used in place of the tapes.
  • the web includes tabs to enable the web to be secured in position.
  • a plastic webbing or cradle can be used.
  • the helmet manufactured according to the present invention is defined to be used in conjunction with other safety apparatus.
  • fitments means to accommodate the use of ear defenders is included.
  • the use of ear defenders is well known and different fitments means have been developed and in many regions become standard. For example standard fitments are in use in the United Kingdom with different standards in Continental Europe.
  • the helmet manufactured according to the present invention is capable of use with both fitments. Additionally, visor carriers and visors, brow guards and weld shields.
  • the fitment means are exemplified in Figures 12-15 .
  • a fitment clip 120 is shown typical for a standard UK fitment.
  • the clip 120 has two downwardly depending arms 121.
  • the arms 121 have limited resilience enabling the arms 121 to bend outwardly from the plane of the clip 120 if a force is applied. Once the force is removed however, the arms 121 revert to the configuration shown.
  • the clip 120 further includes a tab 122, also depending downwardly to engage a fitment on the helmet 1.
  • the clip 120 engages a fitment 130, on the side of a helmet, shown in Figure 13 .
  • the tab 122 passes into the slot 131 in the fitment.
  • each arm 121 passes over the surfaces 132, bending due to the force exerted by the surface 132, until the clip portion 123 of the arm passes over the end of the surface 132. Once the clip portion 123 passes over the end, the arm 121 reverts to its normal position and the clip portion passes under the helmet 1 to hold the fitment clip 120 in position, with the support section 124 against the outer surface of the helmet 1. An accessory can then be fitted to the outer surface 125 of the fitment clip 120.
  • the fitment 130 is however unsuitable for use with the continents European clip 140 shown in Figure 14 .
  • a modified fitment 150, shown in Figure 15 can therefore be included on a helmet 1, which modified fitment can accommodate both types of clip 120 and 140.
  • the fitment 150 is similar to that shown in Figure 13 .
  • the slot 151 is firstly broader to allow passage of the tab 141.
  • the outer surface 152 of this slot 151 includes a throughaperture 153 to receive the projecting tab 142.
  • the use of a two part construction enables fixing mechanisms to be readily incorporated enabling secondary accessories such as reflectors, pencil holders and the like to be included as part of the finished product.
  • the fixing mechanisms are typically slots within the helmet, which slots do not affect the integrity of the helmet.
  • FIGS 16-24 Examples of this are shown in Figures 16-24 .
  • upper slots 160 can be seen on the rear portion 161, together with a lower slot 162 to receive the particular accessories, illustrated in Figures 16 and 17 by a reflector 163.
  • the reflector 163 includes hooks 164 insertable into the slots 160, 162 to secure the reflector 163 in position.
  • FIGS. 18-24 are shown a goggle strapholder 165, lamp cable holder 166, an Radio Frequency (RF) card holder 167, a centrally mounted card holder 168, a neck cover 169, an air supply feed 170 linked into the air vent slot and a pencil holder 171.
  • RF Radio Frequency

Landscapes

  • Helmets And Other Head Coverings (AREA)

Claims (14)

  1. Procédé de fabrication d'un casque de sécurité (1), le procédé comprenant les étapes qui consistent à :
    fournir une coque de protection supérieure, fondamentalement hémisphérique (10), formée d'une matière plastique, pour protéger le crâne de la personne portant le casque en cours d'utilisation ;
    fournir une section de casque inférieure (61) ;
    la section de casque inférieure (61) intégrant des moyens d'engagement pour une courroie de support (66) ;
    fixer chaque extrémité de la courroie de support (66) avec un moyen d'engagement de courroie (63) de telle sorte que la courroie s'étende à travers la section de casque inférieure, et fixer une longueur de courroie (66) suffisante pour former une bande de matériau reposant sur la tête d'une personne portant le casque et supportant le casque (1) ;
    engager la section de casque inférieure (61) avec la section de casque supérieure, caractérisé en ce que ledit engagement pousse les moyens d'engagement de courroie contre la coque de casque supérieure (10), en positionnant ainsi en sandwich les extrémités de la courroie et en limitant le déplacement desdites extrémités de la courroie.
  2. Procédé selon la revendication 1, dans lequel la courroie de support comprend une pluralité de sections de courroie fixées les unes aux autres autour d'une région centrale de chaque section de courroie.
  3. Procédé selon la revendication 2, dans lequel chaque courroie utilisée dans un casque a la même longueur.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel le fait de pousser les moyens d'engagement de courroie contre la coque de casque supérieure bloque une courroie en place pour empêcher le déplacement de la courroie.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel la courroie comprend une ou plusieurs ouvertures définies dans les régions d'extrémité permettant la mise en place de la courroie par-dessus des moyens de positionnement correspondants sur les moyens d'engagement de courroie.
  6. Procédé selon la revendication 5, dans lequel la courroie comprend deux ouvertures.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel le ou chaque moyen de positionnement est une cheville (65).
  8. Procédé selon la revendication 7, dans lequel l'extrémité libre de chaque cheville (65) comporte une portion ayant une section transversale conique, pour produire une apparence semblable à une flèche, la portion de base de la portion clonique ayant un diamètre supérieur à celui de la cheville (65).
  9. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'intérieur de la coque comprend des parois orientées vers le bas, parallèles, définissant un volume interne, dans lequel la section inférieure, y compris les moyens d'engagement, peut être montée, la section inférieure et les parois intégrant des moyens de fixation pour résister la séparation.
  10. Procédé selon l'une quelconque des revendications précédentes, dans lequel la coque supérieure comprend un moyen de ventilation, le moyen de ventilation comprenant un canal interne (14a) défini par le sommet du casque, le canal étant plus large à une extrémité antérieure (14) qu'à l'extrémité postérieure et étant connecté par une ouverture postérieure l'extérieur du casque.
  11. Procédé selon la revendication 10, dans lequel l'ouverture postérieure est orientée vers le bas, pour minimiser la pénétration de matières à partir de l'extérieur.
  12. Procédé selon la revendication 11, dans lequel le point le plus bas du tunnel est situé au-dessus du point le plus haut de l'ouverture postérieure.
  13. Procédé selon l'une quelconque des revendications précédentes, dans lequel la partie inférieure du casque intègre des moyens de montage permettant de monter des accessoires tels que des réflecteurs, des protège-nuque, des porte-crayons et des accessoires similaires.
  14. Procédé selon la revendication 13, dans lequel lesdits moyens de montage sont des ouvertures qui s'engagent avec des languettes sur un accessoire.
EP08839938A 2007-10-19 2008-10-17 Procédé de fabrication d'un casque de protection Active EP2207446B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13154549.3A EP2591690B1 (fr) 2007-10-19 2008-10-17 Casque de protection
EP11007299A EP2399473A3 (fr) 2007-10-19 2008-10-17 Procédé de fabrication d'un casque de protection

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0720441A GB0720441D0 (en) 2007-10-19 2007-10-19 An improved safety helmet
GB0812963A GB0812963D0 (en) 2008-07-16 2008-07-16 An improved safety helmet
PCT/GB2008/003512 WO2009050471A1 (fr) 2007-10-19 2008-10-17 Casque de sécurité amélioré

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP13154549.3A Division EP2591690B1 (fr) 2007-10-19 2008-10-17 Casque de protection
EP11007299.8 Division-Into 2011-09-08

Publications (2)

Publication Number Publication Date
EP2207446A1 EP2207446A1 (fr) 2010-07-21
EP2207446B1 true EP2207446B1 (fr) 2011-12-14

Family

ID=40121193

Family Applications (3)

Application Number Title Priority Date Filing Date
EP08839938A Active EP2207446B1 (fr) 2007-10-19 2008-10-17 Procédé de fabrication d'un casque de protection
EP13154549.3A Active EP2591690B1 (fr) 2007-10-19 2008-10-17 Casque de protection
EP11007299A Withdrawn EP2399473A3 (fr) 2007-10-19 2008-10-17 Procédé de fabrication d'un casque de protection

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP13154549.3A Active EP2591690B1 (fr) 2007-10-19 2008-10-17 Casque de protection
EP11007299A Withdrawn EP2399473A3 (fr) 2007-10-19 2008-10-17 Procédé de fabrication d'un casque de protection

Country Status (3)

Country Link
EP (3) EP2207446B1 (fr)
AT (1) ATE536752T1 (fr)
WO (1) WO2009050471A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2588687A (en) * 2019-11-04 2021-05-05 Globus Shetland Ltd A safety helmet and helmet accessory attachment means

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB850529A (en) * 1958-04-30 1960-10-05 Mine Safety Appliances Co Protective headgear and headgear lining
US3471866A (en) * 1968-07-24 1969-10-14 American Safety Equip Safety helmet suspension
US4391000A (en) * 1982-03-09 1983-07-05 Loennstedt B G Ear muff mounting device
US4442551A (en) * 1982-12-22 1984-04-17 Hellberg Protection Ab Adapter for a protective helmet
US5066154A (en) * 1990-09-21 1991-11-19 Renaud J Maurice Pencil support for security hat
US5658065A (en) * 1993-03-10 1997-08-19 Jamieson; Jim Flashlight holder for protective helmets, hardhats or the like
US6807679B1 (en) * 2003-04-09 2004-10-26 Chen Li Optical Co., Ltd. Mechanism for securing eye protector to helmet
KR100537220B1 (ko) * 2004-01-14 2005-12-20 주식회사 산청 안전모 내피와 그 제조방법
KR100501944B1 (ko) * 2003-09-19 2005-07-19 주식회사 산청 조립이 용이한 안전모의 내부 조립구조

Also Published As

Publication number Publication date
EP2399473A3 (fr) 2012-08-08
EP2591690A3 (fr) 2013-12-04
EP2399473A2 (fr) 2011-12-28
EP2207446A1 (fr) 2010-07-21
EP2591690A2 (fr) 2013-05-15
EP2591690B1 (fr) 2014-12-17
WO2009050471A1 (fr) 2009-04-23
ATE536752T1 (de) 2011-12-15

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