EP0646333B1 - Dispositif pour fixer un écran facial protecteur et/ou des coupelles de protection des oreilles sur un casque de protection - Google Patents

Dispositif pour fixer un écran facial protecteur et/ou des coupelles de protection des oreilles sur un casque de protection Download PDF

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Publication number
EP0646333B1
EP0646333B1 EP94810556A EP94810556A EP0646333B1 EP 0646333 B1 EP0646333 B1 EP 0646333B1 EP 94810556 A EP94810556 A EP 94810556A EP 94810556 A EP94810556 A EP 94810556A EP 0646333 B1 EP0646333 B1 EP 0646333B1
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EP
European Patent Office
Prior art keywords
holding
holding strap
strap plate
claw
plate
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.)
Expired - Lifetime
Application number
EP94810556A
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German (de)
English (en)
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EP0646333A1 (fr
Inventor
Kurt Herzig
Hugo Herzig
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Artilux Herzig AG
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Artilux Herzig AG
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Publication of EP0646333A1 publication Critical patent/EP0646333A1/fr
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    • 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
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A42B3/225—Visors with full face protection, e.g. for industrial safety applications
    • 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
    • A42B3/16—Ear protection devices
    • A42B3/166—Integral hearing protection

Definitions

  • the invention relates to a protective helmet fastening system provided on both sides for adjustable Bracket from a face shield and / or ear muffs according to the preamble of independent claim 1.
  • a bracket which is on both sides of the Protective helmet by means of a screw connection, which the wall of which passes through, is fixed to the helmet (DE-A-22 60 311; DE-U-73 35 724).
  • a disadvantage of this Construction is next to the increased manufacturing effort an often inadmissible weakening of the helmet shell as a result of the two through holes, and one to be carried Privacy screens would have to be created separately.
  • Clamping parts were also developed on the edge of the helmet are to be fixed, with the clamping parts carrying bracket record for the ear muffs (DE-U-74 15 619; DE-C-27 05 348). These clamping parts are relatively simple in their constructive structure, but they are only suitable to hold a bracket. The simultaneous coupling face and hearing protection not possible.
  • EP-A-0 532 483 discloses a holder on a helmet, also only for a face shield that can be swiveled up or down is suitable, but not also for Ear cups.
  • the face shield is made by two Support brackets held. One end of each bracket is on the face shield attached while at the other end of the bracket Bearing journal is provided. This journal is in one triangular eyelet and can hold three different, locked Take positions.
  • US-A-4 124 902 describes a holder on a protective helmet for a face shield as well as ear muffs.
  • the bracket consists of several complicated molded parts with a fine toothing and a clamping screw, whereby there is a high manufacturing cost.
  • For insertion the face shield and / or the ear muffs you have to partially disassemble the brackets. More constructive Construction and assembly make the brackets in use susceptible to failure, which is the case under harsher operating conditions such as occur in forest work, particularly negative affects.
  • the known fastening devices Working helmets for fixing face and hearing protection elements cannot all be rated as optimal will.
  • the invention therefore pursues the objective of to create a fastening system to which both the brackets for a privacy screen, as the brackets for ear muffs at the same time can be coupled.
  • the handling of the head protection elements must be simple and safe. Also in The entire protection system should be used in the electrical sector be.
  • the fastening device by a certain robustness and sufficient against pollution be protected.
  • the constructive structure must Allow inexpensive manufacture. For special applications, where this is sufficient, the fastening system with reduced design effort only the inclusion of a face shield or ear muffs allow.
  • the main use case is assumed, namely that the mounting system for the bracket both of the face shield and of Ear cups is designed.
  • the new fastening system offers compared to the previous state the technology has considerable advantages.
  • the use of a with safety helmet equipped with this fastening system turns out to be advantageous.
  • the relatively small, compact and reduced weight construction as well as the function of the system leads to an optimal contact pressure of the Ear muffs when folded to the ears, for improved foldability - at a distance to the ears - and swiveling in the direction of the Back of the head. Swiveling is also improved of the face shield between the two end positions "lowered - shielding the face" and "raised - releasing the face ".
  • the constructive structure of the Fastening system enables a balanced mass distribution of the protective devices so that their stable positioning in the respective swivel position is guaranteed and for the helmet wearer none, noticeable changes in stress arise.
  • the system has no metal parts, so that one equipped with it Protective helmet also used for electrical work can be.
  • the brackets for the ear muffs and the face shield no longer differentiate between left and right parts will.
  • the protective helmet is used with both attached ear muffs as well as the face shield used, for example when working in the forest Chainsaws.
  • the fastening system is capsule-like The best structure against pollution and against manipulating Interventions protected. There is no relative in any way loosely attached parts, for example a tension spring, that could get lost.
  • the protective helmet 1 has according to Figures 1a to 1c on its lower edge, in the one that extends outwards Helmet rim 11 one on each side vertically extending insertion groove passing through the helmet rim 11 12, which of upstanding webs 13 is surrounded.
  • the insertion grooves 12 are arranged vertically above the ears of a potential helmet wearer.
  • a fastening device is in each of the two insertion grooves 12 100 used and with one from the fastening device 100 vertically bottom extending tab 121, the tab 121 penetrates the insertion groove 12 from above and is conducted in this.
  • the leadership is strengthened the insertion tab 121 in the insertion groove 12 through the the insertion groove 12 surrounding webs 13, so that a Type guide sleeve 14 is formed.
  • Every fastening device 100 is a support bracket 110 - the left one or the right one - the face shield 2 and each a bracket 150 for the respective left or right Hearing protector 3 fixed.
  • the face shield 2 lowered (Figure 1a: full line representation) or raised (dashed line).
  • the ear muffs 3 can have three different positions take, folded to the wearer's ears (figures 1a and 1b: full line representation), from the ears of the Carrier folded down (Figure 1b: dashed line) and finally pivoted backwards (Figure 1a: dashed lines Presentation; Figure 1c: full line representation).
  • Locks to be described below within of the fastening device 100 cause one stable positioning of the face shield 2 and the ear muffs 3, so that an unwanted adjustment - e.g. due to jerky movements - on is prevented in any case.
  • the bracket 110 is with it attached face shield 2 or the bracket 150 adjustable with the ear muffs 3 attached to it.
  • Figures 2a and 2b show the bracket plate 120 of the fastening device 100 in view X, that is, the surface facing the protective helmet 1.
  • the Sectional view according to Figure 2c is the entire Illustrate the structure of the bracket plate 120.
  • arm 111 of support bracket 110 is lowered, while arm 111 is raised in Figure 2b.
  • the one-piece mounting bracket plate 120 is approximately oval Shape and extends downward as a slip-in flap 121 with the parallel side flanks 124.
  • the insertion tab 121 is dimensioned such that the plug connection between the insertion tab 121 and the guide sleeve 14 a secure fixation of the fastening device 100 guaranteed on safety helmet 1, but also an occasional pulling out of the insert tab 121 from the guide sleeve 14 with a certain amount of force is possible.
  • a support edge 122 put on, with the outer flank 125 of the bracket plate 120 closes, with the support edge 122 from the apex line 132 of the bracket plate 120 extends approximately the same distance in both directions.
  • This support edge 122 has two functions.
  • the Support edge 122 causes a play-free application of the Fastening device 100 on the protective helmet.
  • One of the Cross-sectional areas of the support edge 122 namely those which is the transition between arm 111 and the claw 112 facing the bracket 110 serves as a stop 123 when lifting the bracket 110.
  • a clutch cam 126 rises from the center of the bracket plate 120 a clutch cam 126 - here with the cross-sectional shape a hexagon - around which the claw 112 of the bracket 110 takes hold.
  • the clutch cam 126 has at least that Height corresponding to the material thickness of the claw 112, where the material thickness of the entire bracket is 110 according to the strength requirement and the space available certainly.
  • Lid-shaped on the clutch cam 126 sits a retaining washer 127; the clutch cam 126 and the holding disc 127 can expediently form a seamless part.
  • the holding disc The task of 127 is to prevent the Claw 112 and thus the entire bracket 110 from the Coupling cam 126 and perpendicular to the bracket plate 120 slides down.
  • the clutch cam 126 and the Inner contour 113 - here a hexagon socket - the claw 112 have an approximately complementary geometry.
  • the claw 112 is designed like a wrench, where the mouth opening 114 in the local variant extends downwards.
  • the claw 112 furthermore has a groove-shaped elasticity recess 115. This passes through the material thickness of the claw 112 and extends approximately from the transition between claw 112 and the arm 111 partially in the arcuate shape the claw 112 into it.
  • the elasticity recess 115 has the function that when plugging in and taking off of the bracket 110, more precisely the claw 112 on the Coupling cam 126, as well as when adjusting the attached Support bracket 110, the mouth opening 114 rather expanded and the operations are thereby facilitated.
  • the clutch cams 126 and the inner contour 113 are dimensioned to each other so that a tighter Seat results. Corners and flanks of the inner contour 113 of the Claw 112 press against the corresponding corners and Flanks of the clutch cam 126. With an adjustment of the bracket 110 from the lowered to the raised Position or vice versa there is a partial twist the claw 112 around the fixed clutch cam 126. When turning, the clutch cam 126 the mouth opening 114 and the claw 112 as such spread a little bit until there is continuous rotation between the inner contour 113 and the clutch cam 126 results in a next snap position. The The claw 112 is spread and contracted by the elasticity recess 115 favors significantly. In the geometric adjustment between the inner contour 113 and clutch cam 126 it is for relief the adjustment of the support bracket 110 is advantageous, remaining air gaps 116 in the clutch cam assembly 126 and this claw 112 to be provided.
  • the Support bracket plate 120 from view Y that is the face facing away from the protective helmet 1, likewise special has constructive features.
  • the clutch cam 126 opposite and get inside the fastener Extending 100 a pin 128 also rises a locking lug 129 and a base thickening 130.
  • the seat edge 131 is supported the fastening device 100 when inserted into the Guide sleeve 14 from. Leaves the shape of the hard hat 1 To do this, the seat edge 131 could also be on the side the X view.
  • the entire bracket plate 120 with the insertion tab 121 and the components described on the View pages X and Y are advantageously in one piece Plastic molding, e.g. Injection molding process.
  • the fastening device 100 also includes between the bracket plate described above 120 and the cover 160 arranged bracket plate 140.
  • the bracket plate 140 is completed Condition of the fastening device 100 to the Support bracket plate 120 pushed on, the Pin 128 through the center of the bottom 141 of the bracket plate 140 located through hole 142 protrudes through and the base thickening 130 of the pin 128 sits positively in the through hole 142.
  • the bracket plate 120 complementary recess, so that the entire floor 141 is positively attached to the bracket plate 120 is present.
  • the bracket plate 140 at the seat edge 131 completes.
  • the bracket plate 140 has further arrangement features on.
  • the sidewall 143 has a wall reinforcement 147 as therein the axis of rotation 151 of the bracket 150 is embedded.
  • On the horizontal axis of rotation 151 is the Holding bracket 150 suspended and can between them the two positions - folded or folded Position - to be swiveled.
  • a domed lid 160 is set, one towards the top 145 and the positioning and Sealing groove 146 suitable lid edge 161 with corresponding protruding sealing lug 162.
  • the lid 160 also has in the lower edge region over the attachment of the claw 152 to the remaining bracket 150 arrives, a notch 163 so that the Retaining bracket 150 when swung into the folded position is not hindered by the lid 160.
  • Downtown the cover 160 is also a through hole 164 provided with external countersink 165.
  • the lid edge lies 161 on the upper edge 145 of the bracket plate 140; there engages the sealing lug 162 in the positioning and Sealing groove 146 a.
  • the tip of the pen 128 with the locking nose 129 at the front squeeze through the through hole 164 in the cover 160, finally snaps into the countersink 165 and thus pulls the lid 160 towards itself, thereby also the Bracket plate 140 pressed against the bracket plate 120 and thus the assembly of the fastening device 100 arises.
  • the through hole 164 in the lid 160 a Blind hole with an expansion to be provided in which hooks the locking lug 129, so that a It is very difficult to remove the cover 160 once it has been put on becomes.
  • This construction can be useful if it is necessary to prevent the fastening device 100 is opened illegally. With less Danger of contamination is also possible instead a circumferential closed side wall 143, only Provide webs for supporting the cover 160. Conceivable it is also to dispense with the side wall 143 and to continue the lid edge 161 that on in this way between the bottom 141 and the lid 160 a cavity for the claw 152 and the spring bar 148 is formed.
  • bracket plate 140 and the lid 160 advantageous as one-piece plastic moldings, e.g. in the injection molding process, produced; the same applies to the support bracket 110 and the bracket 150.
  • This position means that the bracket 150 from the fastening device 100 approximately vertically runs downwards. Furthermore, the spring bar 148 is through a contact edge 156 on the claw 152, which by the The sliding surface 153 lies behind the switching edge 154 and against the underside of the bulbous nose profile 149 presses, slightly bent upwards from its rest position. When viewed vertically, the contact flank lies 156 through the bevels on the claw 152 around one shade lower than the one in this position Switching edge 154 forming ridge line. During adjustment the bottom of the nose profile 149 has this position the switching edge 154 skipped. It was a maximum Deflection of the spring bar 148 and thus also Peak spring force exceeded, so that the Retaining bracket 150 remains in this position.
  • This position means that the bracket 150 protrudes obliquely from the fastening device 100.
  • the stirrup became the folded position in a swivel motion with a certain effort moved outwards.
  • the spring bar lifts up 148 a little bit and the spring force increases itself, because the switching edge 154 is higher than that Contact edge 156. With further adjustment, this moves Nose profile 149 on the sliding surface 153. As this on the y coordinate viewed below the switching edge 154 lies, the spring bar 148 jumps in the direction of it Rest position.
  • the spring bar 148 is deflected upwards again because the lever arm by adjusting the claw 152 from the axis of rotation 151 to the underside of the nose profile 149 extended, causing the spring bar to be successively is pushed further up.
  • the maximal Deflection and spring force reach the nose profile 149, if the switching edge 155 the bottom of the nose profile 149 happens. Then the nose profile 149 jumps from the previously passed sliding surface 153 and the switching edge 155 just passed behind this, the spring bar 148 also drops suddenly.
  • the switching edge 155 is considered on the x coordinate left of the nose profile 149 and the bracket 150 remains in this position.
  • the putting on and taking off of the face shield 2 and the ear muffs 3 happens by inserting or pulling out the two fastening devices 100 in or out of the protective helmet 1 with those on the fasteners 100 already fixed pairs of carrying brackets 110 and holding brackets 150, on which the face shield 2 or Ear cups 3 are attached. It therefore exists no need, too easy to put on and removing the face shield 2 and the Ear muffs 3, which on the brackets 110, respectively hang on the bracket 150, directly on the or to be provided by the fastening devices 100.
  • bracket 110 for holding the face shield 2 or only the bracket 150 with the attached ear protector 3 in a fastening device to fix. Judging by the reduced Function of such a fastening device is these are simplified as follows.
  • bracket plate 120 Is only the holder of the face shield 2, that is in each case one carrying bracket 110 in a fastening device can provide such a fastening device structurally greatly simplified will.
  • the one before described structure of the bracket plate from the view X remains unchanged, however, the pen 128, including the base thickening 130, on the View Y side not needed.
  • the clutch cam 126 with the holding disc 127 instead of on the view X side on the side of the Attach view Y and then snap the claw 112 there.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Helmets And Other Head Coverings (AREA)

Claims (13)

  1. Système de fixation installé sur un casque (1), comportant un dispositif de fixation qui peut être monté respectivement des deux côtés du casque (1) et sert à retenir, d'une manière réglable, un étrier de support droit et un étrier de support gauche (110) et/ou un étrier de retenue droit et un étrier de retenue gauche (150), et dans lequel
    dans la variante 1 -
    l'étrier de support droit et l'étrier de support gauche (110), auxquels sont fixés des côtés respectifs d'une visière (2) ; ou
    dans la variante 2 -
    l'étrier de retenue de droite et l'étrier de retenue de gauche (150), auxquels sont fixés respectivement des coques (3) de protection des oreilles ; ou
    dans la variante 3 -
    les étriers de support (110) et les étriers de retenue (150)
    sont retenus au niveau des deux dispositifs de fixation, caractérisé en ce que le dispositif de fixation peut être étendu selon une construction modulaire et est constitué par
    dans le cas de la variante 1 :
    une plaque monobloc d'étrier de support (120'), qui possède, sur la surface tournée vers le casque (1) ou sur la surface opposée, une came saillante d'accouplement (126) comportant un disque de retenue (127) moulé sous la forme de chapeau au niveau de la pointe de cette came ; auquel cas autour de la came d'accouplement (126) s'engage une mâchoire (112) qui forme d'un côté la terminaison de l'étrier de support (110) et dont le contour intérieur (113) possède un système d'encliquetage complémentaire du contour extérieur de la came d'accouplement (126), ce qui permet de régler au moins deux positions de réglage fixées de façon stable de la visière (2) - position abaissée et position soulevée ;
    dans le cas de la variante 2 :
    une plaque monobloc (120'') de l'étrier de support, qui possède, sur la face tournée à l'opposé du casque (1), une tige (128) qui pénètre à l'intérieur du dispositif de fixation (100) et traverse une plaque monobloc (140) de l'étrier de retenue, qui est directement contiguë et à laquelle l'étrier de retenue (150) est fixé de manière à pouvoir pivoter, auquel cas l'extrémité, qui pénètre dans la plaque (140) de l'étrier de retenue, est formée par une mâchoire (152), qui permet d'obtenir, à l'encontre d'une barrette de ressort (148) possédant un profil en forme de nez (149), deux positions de réglage bloquées de façon stable de la coque (3) de protection de l'oreille - position rabattue et position écartée - ainsi qu'une position de ressort qui s'étend depuis la position de réglage "rabattue" en direction de la position de réglage "écartée" et qui se règle en cours d'utilisation sur la taille variable de la tête, avec une pression approximativement constante de serrage de la coque (3) de protection de l'oreille contre cette dernière, et sur la plaque d'étrier de retenue (140) est monté un couvercle (160) dans lequel s'encliquette la tige (128), et la liaison par frottement entre la plaque (120) de l'étrier de support et la plaque (140) de l'étrier de retenue permet, autour de la tige (128) formant axe de rotation, une rotation exécutée avec l'application d'une certaine force et le blocage de la plaque (140) de l'étrier de retenue, sur laquelle l'étrier de retenue (150) est ressortie, dans la position de pivotement choisie ;
    dans le cas de la variante 3 :
    une plaque monobloc (120) de l'étrier de support, qui est montée sur la face tournée vers le casque (1) conformément à la variante 1 et sur la surface tournée à l'opposé du casque (1) conformément à la variante 2, le reste de la construction du dispositif de fixation (100) correspondant au reste de la combinaison des variantes 1 et 2.
  2. Système de fixation selon la revendication 1, caractérisé en ce que le casque (1) comporte des deux côtés, au niveau de son bord (11), qui s'étend vers l'extérieur, et verticalement au-dessus des oreilles d'un porteur potentiel, respectivement une rainure d'enfichage (12) qui s'étend dans le bord (11) du casque et qui est entourée par des barrettes (13) qui s'étendent vers le haut et, forme ainsi une douille de guidage (14) pour la patte d'enfichage (121) qui a une forme complémentaire en coupe transversale horizontale et qui est moulée sous la forme d'un prolongement inférieur sur la plaque (120,120', 120'') de l'étrier de support et est destinée à être enfichée dans la douille de guidage (14), la plaque (120, 120', 120'') de l'étrier de support possédant, au niveau de la terminaison supérieure de la patte d'enfichage (121), au moins d'un côté, un bord d'appui horizontal (131), qui prend appui sur la douille de guidage (14), et en outre sur la plaque (120, 120', 120'') de l'étrier de support prend appui dans la partie la plus élevée, d'une manière contiguë au niveau du bord de cette plaque et ce sous la forme d'un segment s'étendant par exemple sur un arc de 90°, un bord de support (122), qui s'étend approximativement sur la même distance des deux côtés à partir de la ligne sommitale (132) et se termine par le flanc extérieur (125), et en outre, l'une des surfaces en coupe transversale du bord de support (122) forme une butée (123) lors du soulèvement de l'étrier de support (110).
  3. Système de fixation selon la revendication 1 ou 2, caractérisé en ce que la mâchoire (112) de l'étrier de support (110) possède la forme de clé à fourche (14), possède une ouverture (114) et comporte un évidement en forme de rainure (115) produisant une élasticité et servant à faciliter l'écartement de la mâchoire (112), et que pour faciliter l'enfichage et le retrait de la mâchoire (112) sur ou à partir de la came d'accouplement (126) et la rotation de la mâchoire (112) autour de la came d'accouplement (126), des fentes de passage d'air (116) sont prévues entre le contour intérieur (113) de la mâchoire (112) et le contour extérieur de la came d'accouplement (126).
  4. Système de fixation selon l'une des revendications 1 à 3, caractérisé en ce que le contour extérieur de la came d'accouplement (126) est un carreau ou possède un nombre plus élevé d' angles ou est agencé sous la forme d'une denture en forme de coins ou arrondie, le contour intérieur (113) de la mâchoire (112) étant agencé avec une forme complémentaire de cette denture.
  5. Système de fixation selon l'une des revendications 1 à 4, caractérisé en ce que la tige (128) s'élève à partir du centre de la face de la plaque (120) de l'étrier de support, qui est tournée vers la plaque (140) de l'étrier de retenue, et que cette tige possède à partir de sa base un épaississement de base (130) et sur sa pointe un nez de blocage (129), la section transversale de l'épaississement de base (130) étant agencée de manière à pouvoir être ajustée et alignée avec le perçage traversant (142) formé dans le fond (141) de la plaque (140) de l'étrier de retenue, qui est montée sur la plaque (120) de l'étrier de support, et qu'en outre le nez de blocage (129) s'engage dans un perçage traversant (164) formé au centre du couvercle (160) et que par conséquent la plaque (120) de l'étrier de support, la plaque (140) de l'étrier de retenue et le couvercle (160) sont maintenus assemblés.
  6. Système de fixation selon l'une des revendications 1 à 5, caractérisé en ce que la surface, tournée vers le casque (1), du fond (141) de la plaque (140) de l'étrier de retenue est en principe plane, en dehors du perçage traversant (142), et qu'une liaison par frottement est établie avec la surface complémentaire présente sur la plaque (120) de l'étrier de support, auquel cas sur la surface tournée à l'opposé du casque (1) s'élève, à partir du bord du fond (141), une paroi latérale (143), qui entoure presque complète la plaque (140) de l'étrier de retenue et qui possède à sa partie inférieure, dans la zone de l'entrée de l'étrier de retenue (150) sur la plaque (140) de l'étrier de retenue, un perçage (144), dans lequel l'étrier de retenue (150) est simultanément guidé latéralement, ou bien des barrettes d'entretoisement supportant le couvercle (160) sont prévues à la place de la paroi latérale (143), ou bien le bord (161) du couvercle est cintré et prolongé de telle sorte qu'entre le fond (141) et le couvercle (160) est formée une cavité d'un volume suffisant pour le montage et le déplacement de la mâchoire (152) et de la barrette de ressort (148).
  7. Système de fixation selon la revendication 6, caractérisé en ce que sur le bord supérieur (145) de la paroi latérale circonférentielle (143) ou à la partie supérieure des barrettes d'entretoisement ou sur le bord du fond (141) est formé par usinage une rainure de positionnement et d'étanchéité (146), auquel cas il est prévu à cet effet, sur le bord (161) du couvercle, une nervure circonférentielle complémentaire d'étanchéité (162), et que dans la zone du perçage (144), la paroi latérale (143) possède un renfort de paroi (147) servant à loger en lui l'axe de rotation (151) de l'étrier de retenue (150) ainsi qu'à obtenir une stabilité suffisante lors du pivotement de la coque (3) de protection de l'oreille vers l'arrière.
  8. Système de fixation selon l'une des revendications 1 à 7, caractérisé en ce que l'étrier de retenue (150) est agencé à la manière d'une mâchoire (152) au niveau de son extrémité qui s'étend sur la plaque (140) de l'étrier de retenue et, à proximité de ou en contact permanent avec la mâchoire (152), une barrette de ressort (148) ayant un profil en forme de bec (149) est prévue, la mâchoire (152) possédant deux arêtes de commutation (154, 155), qui définissent, d'une manière mesurée depuis l'axe de rotation (151) en direction du profil (149) en forme de bec, les deux distances maximales par rapport au contour extérieur de la mâchoire (152), tandis qu'entre les arêtes de commutation (154, 155) est disposée une surface de glissement, qui lors du changement des positions de réglage, doit être balayée par le profil (149) en forme de bec, et, respectivement avant que les deux positions de réglage arrêtées - coque (3) de protection de l'oreille rabattue ou écartée - soit atteinte, l'une des arêtes de commutation (154, 155) est franchie lors de la déviation maximale de la barrette de ressort (148) et par conséquent à l'encontre de la force maximale du ressort.
  9. Système de fixation selon la revendication 8, caractérisé en ce que la barrette de ressort (148) fait saillie à partir du fond (141) de la plaque (140) de l'étrier de retenue ou fait saillie sous la forme d'une languette à partir de la paroi latérale (143) ou est tendue entre la paroi latérale circonférentielle (143), et la mâchoire (152) est recourbée approximativement autour de l'axe de rotation (151).
  10. Système de fixation selon la revendication 8 ou 9, caractérisé en ce que dans la position de réglage bloquée "coque (3) de protection de l'oreille rabattue", la barrette de ressort (158) est placée sous une contrainte résiduelle qui est transmise par l'intermédiaire du profil en forme de bec (149) à un flanc de contact (156) situé sur l'étrier de retenue (150) et agit en tant que force de serrage de la coque (3) de protection de l'oreille contre l'oreille du porteur, la mobilité de l'étrier de retenue (150) vers l'intérieur étant limitée finalement par une surface de butée (157) située sur l'étrier de retenue (150), qui prend appui sur le bord du fond (141).
  11. Système de fixation selon l'une des revendications 8 à 10, caractérisé en ce que dans la position de réglage bloquée "coque (3) de protection de l'oreille écartée", la barrette de ressort (148) est également placée sous contrainte et le profil en forme de bec (149) entoure l'arête de commutation associée (155) en lui appliquant une force de pression.
  12. Système de fixation selon l'une des revendications 1 à 11, caractérisé en ce que le couvercle (160) comporte une partie évidée (163) dans la zone marginale inférieure, qui est située approximativement au-dessus de la base de la mâchoire (152), pour le mouvement de rabattement de l'étrier de retenue (150) et pour servir de butée lors de ce déplacement.
  13. Système de fixation selon l'une des revendications 1 à 12, caractérisé en ce que la plaque (120) de l'étrier de support, la plaque (140) de l'étrier de retenue, le couvercle (160) ainsi que l'étrier de support (110) et l'étrier de retenue (150) sont fabriqués sous la forme de pièces moulées en matière plastique d'un seul tenant - par exemple selon le procédé de moulage par injection.
EP94810556A 1993-09-30 1994-09-26 Dispositif pour fixer un écran facial protecteur et/ou des coupelles de protection des oreilles sur un casque de protection Expired - Lifetime EP0646333B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH294293 1993-09-30
CH2942/93 1993-09-30

Publications (2)

Publication Number Publication Date
EP0646333A1 EP0646333A1 (fr) 1995-04-05
EP0646333B1 true EP0646333B1 (fr) 1998-07-08

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EP94810556A Expired - Lifetime EP0646333B1 (fr) 1993-09-30 1994-09-26 Dispositif pour fixer un écran facial protecteur et/ou des coupelles de protection des oreilles sur un casque de protection

Country Status (5)

Country Link
US (1) US5546610A (fr)
EP (1) EP0646333B1 (fr)
CA (1) CA2133016A1 (fr)
DE (1) DE59406401D1 (fr)
NO (1) NO943619L (fr)

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AT500786B1 (de) * 2004-08-19 2011-08-15 Anton Pfanner Gehörschutz- und/oder lautsprecherelement
WO2008025460A1 (fr) 2006-08-30 2008-03-06 Andreas Stihl Ag & Co. Kg Système combiné de protection de la tête

Also Published As

Publication number Publication date
DE59406401D1 (de) 1998-08-13
US5546610A (en) 1996-08-20
NO943619D0 (no) 1994-09-29
EP0646333A1 (fr) 1995-04-05
CA2133016A1 (fr) 1995-03-31
NO943619L (no) 1995-03-31

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