EP2311337A1 - Gelenkmechanismus für ein Visier an der Schale eines Helms - Google Patents

Gelenkmechanismus für ein Visier an der Schale eines Helms Download PDF

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Publication number
EP2311337A1
EP2311337A1 EP10187150A EP10187150A EP2311337A1 EP 2311337 A1 EP2311337 A1 EP 2311337A1 EP 10187150 A EP10187150 A EP 10187150A EP 10187150 A EP10187150 A EP 10187150A EP 2311337 A1 EP2311337 A1 EP 2311337A1
Authority
EP
European Patent Office
Prior art keywords
screen
cam
cap
helmet
lateral ends
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Withdrawn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
EP10187150A
Other languages
English (en)
French (fr)
Inventor
Benoît Lavit
Michel Rigaud
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.)
Shark
Original Assignee
Shark
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 Shark filed Critical Shark
Publication of EP2311337A1 publication Critical patent/EP2311337A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A42B3/221—Attaching visors to helmet shells, e.g. on motorcycle helmets
    • A42B3/222—Attaching visors to helmet shells, e.g. on motorcycle helmets in an articulated manner, e.g. hinge devices

Definitions

  • the present invention relates to the general field of helmets, in particular helmets for motorcyclists, comprising a cap and a translucent protective shield pivotally mounted relative to the cap.
  • the face protection screen is conventionally articulated in rotation between a closed position and a maximum open position.
  • the main purpose of the present invention is therefore to overcome the drawbacks of known mechanisms for linking a screen to a helmet cap by proposing a helmet comprising a cap and a screen pivotally mounted with respect to the cap between a closed position and a position of maximum opening, characterized in that the cap has, on each side, an attachment cam, the screen comprises two concave arcuate lateral ends on an angular portion between 185 ° and 300 ° for gripping the cams on both sides of the cap and thus ensure the maintenance of the screen on the cap, the cams have functional contours such that the lateral ends of the screen are rotated on at least three points around the cams for the open positions between the maximum open position and a so-called intermediate position, close to the closed position, and such that the lateral ends of the screen are put under stress by the cams between the intermediate position and the closed position, so that this constraint implies, by action / reaction of the lateral ends on the cams, a recoil in translation, towards the cap, from the center of rotation of the screen during
  • the use of the cams makes it possible to use the stresses they generate on the lateral ends to perform particular functions for well-defined and functional angular positions.
  • the deformations of the lateral ends generated by the cams have the effect of pulling the screen towards the cap on the angular portion between the closed position and an intermediate position.
  • This rotary movement has the effect, under constraint of the cam, to move the screen away from the cap at the same time as the screen pivots.
  • the cams according to the invention are such that they only support a rotational movement of the screen bearing on three points.
  • the lateral ends of the screen are concave arcuate on an angular portion between 250 ° and 290 °.
  • Such angular portions allow optimal behavior of the lateral ends between a closure of the arc sufficient to hold the screen securely on the cap and an opening also sufficient to pass on the cam.
  • the diameter of the circular arcs is between 20 mm and 50 mm.
  • Such relatively large diameters provide excellent pivotal stability. This obviously implies that the cams have global contours also in these orders of diameter. Such diameters allow to provide a good support for rotation and, therefore, a good guidance in rotation while ensuring relative compactness to the entire mechanism of articulation between the screen and the cap.
  • the lateral ends of the screen each comprise cut-off sides on either side of the circular arc, making V-shaped surfaces to promote the sliding of the cam when the screen is pushed on the cap and the deformed lateral ends to pass on the cam and come to grip it.
  • the cams slide on the cut edges causing the deformation of the lateral ends in an arc until each of the cams has entered the inside of the arc on either side of the helmet. .
  • the screen is then put in place and secured to the cap.
  • the contour of the cam comprises at least one protrusion placed on the path of one of the end points of the arc of a circle so as to be met by this extreme point in the so-called intermediate angular position. of the screen relative to the cap.
  • This characteristic makes it possible to put the lateral ends under increasing stress gradually by raising at least one of the extreme points on the protrusion of the cam. This causes, by reaction action on the cam, a force pulling the screen towards the back of the helmet.
  • the cam will comprise a single protrusion on which will flow one of the end points of the arc of the lateral end, for example the end point placed on the bottom of the screen.
  • the contour of the cam comprises two protuberances each placed on the path of one of the end points of the arc so as to be met by these end points for the same angular position of the screen corresponding to the intermediate position of the screen relative to the cap.
  • the cam has an outline such that, for the closed position of the screen, the lateral ends of the screen are held under a slight constraint.
  • This feature makes it possible to ensure that the screen in the closed position is forced backwards, and thus toward the cap, by placing the lateral ends under stress on the cam. This ensures the positioning of the screen relative to the cap and also the complete closure of the screen on the cap, especially when a seal must be in contact with the screen or slightly crushed to ensure the total closure of the screen.
  • each cam comprises a notch complementary to a lug placed on the arc of the lateral end of the screen, the lug and the notch being positioned respectively on the cam and the arc of a circle, to fit into the closed position of the screen, the pin being further such that it realizes one of the three points on the cam when rotating on three points between the open position maximum and the intermediate position.
  • a lug and a notch constitutes a simple embodiment making it possible to ensure geometrically, at the same time, the specific stressing of the lateral ends between the intermediate position and the closed position, and the rotation on at least three points between the intermediate position and the maximum open position.
  • the lug constitutes a third bearing point in addition to the other two support points on the cam, located at the two end portions of the circular arcs.
  • At least one of the attachment cams is associated with a flexible toothed surface also fixed on the cap, the screen being provided, on the side of this cam, with a complementary shaped shuttle. at least one tooth of the toothed surface and intended to be in contact with the toothed surface when the screen is placed on the cap, the opening / closing of the screen resulting in successive deformations of the toothed surface during displacement into circular arc of the shuttle along the toothed surface at each passage of the shuttle on the top of one of the teeth of the toothed surface.
  • This characteristic ensures the user the sensation of passing the screen on notches and therefore in successive predefined positions.
  • This characteristic responds to the habits of users who are accustomed to feeling that the screen is locked in a particular position with a certain stability.
  • the toothed surface thus makes it possible to ensure the presence of several stable positions of the screen, in particular for the positions situated between the intermediate position and the maximum open position.
  • a cam associated with a toothed surface is arranged on each side of the helmet.
  • the cam associated with the toothed surface is on the left of the helmet.
  • the user uses the left hand, which is the opposite hand to the accelerator side on conventional motorcycles, to manipulate the screen, this allows the force exerted by the user to be close to the elements. ensuring the discretization of the movement. This avoids damaging blockages or twists of the screen.
  • the toothed surface is aligned on two circular arcs of substantially identical diameters but of different centers, a first center corresponding to the center of rotation of the screen moved back during the constriction of the cam by the ends. lateral, and a second center corresponding to the center of rotation on three points of the screen between the maximum open position and the intermediate position.
  • the toothed surface allows the toothed surface to define successive positions of the screen that the screen is between the closed position and the intermediate position or that the screen is between the intermediate position and the maximum open position. Indeed, the constraint of the screen causing a displacement thereof towards the back of the helmet, the toothed surface must comprise a portion of an arc of a circle whose center is slightly set back relative to the portion of arc of circle corresponding to the movement of the screen between the intermediate position and the maximum open position if it is to remain active.
  • the screen further comprises a notch protruding from the lower edge of the screen on the left side and intended, when the screen is closed, to bear against a surface of support of a pusher attached to the cap and hinged relative thereto, this notch being in sliding abutment on the bearing surface of the pusher during the movement of the pusher towards the front of the helmet, the bearing surface being as it causes the screen to move forwards and forwards over a short length and then locks the screen so that the screen remains in a so-called net position air allowing to let a stream of air pass to the inside of the helmet, the return of the pusher being ensured by a spring when the screen is actuated slightly in the direction of the opening.
  • This characteristic makes it possible to provide the helmet with a so-called "air net” function.
  • This function is intended in particular to remove the mist possibly formed on the screen by opening very slightly the screen to let a stream of air.
  • the realization of the air netting function in the manner provided by this particular feature of the invention utilizes the flexibility of the lateral ends of the screen on the cams to slightly move the screen forwardly causing precisely deformation of the lateral extremities by a simple thrust forward towards the front of the helmet on the screen by means of a projecting notch. To release the screen from the air netting position, it is only necessary to raise the screen upwards and either to lower it manually or, if the screen has been raised slightly, to only release it. Indeed, when the screen has been slightly raised, as the lateral ends are then still constrained, the screen naturally returns back causing the closing of the screen.
  • the invention also relates to a screen adapted to be removably mounted on a helmet comprising a cap and the screen pivotally mounted relative to the cap between a closed position and a maximum open position, characterized in that, the cap presenting, on each side, an attachment cam, the screen comprises two concave arcuate lateral ends on an angular portion between 185 ° and 300 ° making it possible to grip the cams on either side of the cap and thus ensure the maintenance of the screen on the cap.
  • Such a screen will be able to withstand the variable intensity constraints associated with the angular movement of the screen around the cam which has a specific contour to increase the stress applied to the lateral ends at the moment of the passage of the intermediate position.
  • a screen comprising the characteristics presented in the context of the protection of a helmet according to the invention but specific to the helmet, in particular the presence of a lug at the arc of the lateral extremities, the presence of a shuttle adapted to circulate on a flexible toothed surface of a plate according to the invention or the presence of a notch 25 on the lower edge of the screen allowing the implementation of the air thread function, is also part of the subject of the invention.
  • the Figure 1A represents the hinge mechanism according to the invention between a cap, only represented by the presence of a seal 10 and elements of the hinge mechanism according to the invention attached thereto, and a screen 2, shown in dashed line.
  • a cap On the cap are fixed, on either side of the cap, two cams 11 which project relative to the surface of the cap.
  • On the figure 1 only the left side of the helmet is shown in a preferred embodiment. We therefore see only the cam 11 (G).
  • a cam 11 (D) having a mirror shape of the cam 11 (G) is fixed on the right side of the cap.
  • the screen 2 comprises two lateral ends 20 each having an arcuate surface 21 open about 90 ° in the embodiment shown.
  • the arched surface of circle 21 is present on an angular portion of the order of 270 °.
  • This figure 2 shows the two left lateral ends (G) and right (D).
  • each lateral end 20 comprises a circular arc 21 and two cut faces 22a and 22b on either side of the circular arc 21. It is thus expected that the panels 22a and 22b slide on the cam 11 when, when placing the screen, the screen 2 is pushed according to the arrow represented on the Figure 1A to the cam 11 and thus to the cap.
  • a plate 15, placed under the cam 11 which projects relative to this plate 15, comprises a toothed surface 12 flexible.
  • the assembly consisting of the plate 15 and the cam 11 can be made of a block or be made in two parts.
  • the screen comprises a shuttle 23 of complementary shape to a tooth of the toothed surface 12 and intended to slide on the toothed surface 12 to discretize the positions that can be taken by the screen 2 by pressing on the toothed surface 12.
  • This shuttle 23 and the toothed surface 12 is advantageously present on both sides of the helmet. Nevertheless, it is possible to provide only one side of a toothed surface 12 and a shuttle. In this case, preferably the toothed surface 12 and the shuttle 23 are installed on the left side of the cap. This allows the discretization of the movement to be ensured on the side of the screen on which the user will act preferably by usual use of the left hand. The point of exercise of the force and the axis of the movement are then close which avoids twists, even blockages of the screen.
  • the screen 2 comprises a lug 24 complementary to a notch 14 formed in the cam 11. For the closed position of the screen 2 on the cap, the lug 24 is pressed into the slot 14.
  • the arc 21 is under stress on the cam 11 in the closed position.
  • the circular arc represented in its undeformed and therefore unstressed configuration, slightly overlaps the cam 11. This shows that, for the closed position of the screen 2, the lateral ends 20 of the screen 2 are under constraint.
  • the figure 1C represents the screen 2 in a first partially open position in which the screen 2 is pressed on three points of the cam 11 ..
  • the toothed surface 12 then ensures that the screen 2 takes only certain predetermined angular positions represented on the Figures 1D to 1F and is not in regular rotation and continuous on three points around the cam 11 from the position shown on the figure 1C .
  • the lug 24 constitutes a third K support point for rotation on three points.
  • Two other points I and J of support on the cam 11 are located at the end points 21a and 21b of the arc 21.
  • figure 1C it can be seen that the three bearing points on the cam 11 generate a slight constraint of the lateral ends on the cams. Indeed, the lateral end always shown without deformation slightly overlaps the cam.
  • the cam 11 thus has a shape such that the points I, J and K remain in contact with it when they rotate around it for the following positions of the screen 2 as shown in FIGS. Figures 1D to 1F .
  • figure 1C represents the intermediate position as defined according to the invention. Indeed, between the intermediate position and the closed position of the screen 2, the arc 21 is put under specific stress, pulling the screen towards the back of the helmet and therefore against the cap, by the presence of the cam 11. Then between the intermediate position and the open position represented on the figure 1F , a rotation on three points I, J and K of the arc 21 is made around the cam 11.
  • the presence of the lug 24 ensures the presence of the third point of support on the cam 11 while allowing, by penetration of the lug 24 in the notch 14, the translation of the screen 2 to the rear without the cam 11 does not hamper this decline of the screen.
  • the figure 3 shows the cam 11 with a contour according to the invention. It is noted here again that the cam can be integrated in the plate or be an independent piece.
  • the contour of the cam 11 comprises two protuberances 11a and 11b placed on the paths of the end points 21a and 21b of the arc 21 so as to be met by these end points in the same angular position of the screen 2 with respect to the cap.
  • the end points 21a and 21b of the circular arc 21 each rise on the protuberances 11a and 11b causing the specific stressing of the arc 21. under stress pulls the screen 2 towards the back of the cap.
  • the lug 24 enters the notch 14 and the shuttle 23 is displaced on the lowest tooth 12a of the toothed surface 12.
  • This tooth 12a is aligned on a circle of the same diameter as the circle where the other teeth 12b to 12e of the toothed surface 12 are placed but with a center O 'shifted in translation relative to the center O of the circle on which are located the other teeth 12b to 12e.
  • the shape of the contour of the cam 11, and in particular the protuberances 11a and 11b, provide the function according to the invention. It allows in fact that the cam 11 ensures the specific stressing of the lateral ends 20 of the screen 2 for the closed position and for the passage between the closed position and the intermediate position which is, on the figure 1 , the first partially open position represented on the figure 1C . It also allows a free rotation of the screen 2 around the cam 11 on at least three points for a plurality of partially open positions and fully open. At the same time, as illustrated in Figures 1B to 1F , the flexible toothed surface 12 makes it possible to to discretize the movement of the screen 2.
  • the flexibility of the toothed surface 12 is greater than that of the lateral ends of the screen so as to ensure that it is the toothed surface 12 which deforms and not the lateral ends 20 of the 2 when the shuttle 23 moves along the toothed surface 12. Only the toothed surface 12 is deformed so as to discretize the movement of the screen 2 by displacement of the shuttle 23 on the flexible surface 12.
  • the figure 4 shows a perspective view of a plate 15 on the periphery of which is formed the toothed surface 12.
  • the plate 15 is shown without cam 11 protruding.
  • This day 16 is advantageously dimensioned so that the material present between the day 16 and the toothed surface 12 is flexible enough to absorb all the constraints generated by the movement of the shuttle 23 on the toothed surface 12 and not to generate deformations of the lateral ends 20 and more precisely of the arc 21.
  • the figure 5 shows a perspective view of the assembly constituted by the cam 11 and the plate 15 as implemented on the left side of a helmet according to the invention. It is noted here that the cam 11 projects on the plate 15 on which the toothed surface 12 is formed. The screen 2 is placed above the plate and encloses the cam 11 projecting on the plate 15.
  • cam 11 (D) mirror of the cam 11 (G) is necessary for the implementation of the invention.
  • the cam 11 (D) can be mounted on a simplified plate having no toothed surface 12. Nevertheless the presence of a toothed surface on each side of the helmet ensures the symmetry of movement of the screen 2 which plays in favor of the stability of it.
  • the figure 7 shows a side view of another embodiment of the assembly constituted by the plate and the cam.
  • this assembly is made of a block without it being possible to separate the cam from the plate.
  • this is not mandatory and the same shapes could be made to manufacture a set where the cam and the plate could be dissociated.
  • the cam 11 comprises, on the bottom of the cam 11, a single protrusion 11a more pronounced than the growths presented in the previous embodiment.
  • the role of this excrescence is to put under increasing stress the lateral ends of the screen during the passage of the intermediate position by pressing the end point 21b placed at the bottom of the arc 21 of the screen on the cam 11.
  • the stress exerted on the lateral ends thanks to the rise of this extreme point 21b on the protrusion 11a of the cam 11 shown on the figure 7 , is then similar to that performed with the cam 11 shown in the previous figures.
  • the notch 14 is enlarged relative to the previous embodiment.
  • Such a slot shape can be used with a lug 24 as presented on the screen 2 of the preceding figures or with a lug also wider and exactly complementary to the notch 14.
  • a flange will advantageously be fixed, on each side, to the plate and the cam by the perforations referenced 17a, 17b and 17c on the figure 3 and the figure 7 .
  • the use of such a flange is conventional to hide the articulation mechanisms of the screen.
  • such a flange serves the function of preventing the screen 2 from disengaging laterally from the cam 11.
  • the screen 2 comprises a notch 25 protruding from the lower edge of the left of the screen 2.
  • This notch 25 is useful for the implementation of an air net function well known to motorcyclists in combination with the features of the invention and by exploiting them.
  • the air netting function allows a stream of air to enter the inside of the helmet so as to eliminate any mist that may have formed on the screen 2.
  • a pusher 30 is articulated around a fixed axis 31 advantageously on the plate 15 carrying the toothed surface 12, this pusher 30 being able to press on a spring 32 integral with the plate 15.
  • the pusher 30 comprises a surface 33 on which is intended to come slide the notch 25 of the screen 2 when the pusher 30 is pushed forward by pressing the spring 32.
  • the pusher 30 thus allows to push the screen 2 forward using the flexibility of the lateral ends 20 of the screen 2 on the cams 11.
  • the pusher 30 then comprises a shoulder 34 in which is housed the notch 25 to lock the screen 2 in said air thread position as shown in Figure 4B. In this position, the screen 2 is pushed towards the front of the helmet and the lateral ends 20 are more deformed than in the closed position of the screen 2.

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  • Helmets And Other Head Coverings (AREA)
EP10187150A 2009-10-14 2010-10-11 Gelenkmechanismus für ein Visier an der Schale eines Helms Withdrawn EP2311337A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0957187A FR2951055B1 (fr) 2009-10-14 2009-10-14 Mecanisme d'articulation d'un ecran sur une calotte de casque

Publications (1)

Publication Number Publication Date
EP2311337A1 true EP2311337A1 (de) 2011-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10187150A Withdrawn EP2311337A1 (de) 2009-10-14 2010-10-11 Gelenkmechanismus für ein Visier an der Schale eines Helms

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EP (1) EP2311337A1 (de)
FR (1) FR2951055B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2716000A1 (es) * 2017-12-01 2019-06-07 Tomas Manuf Casco protector para motoristas con visera de protección solar
CN113331528A (zh) * 2021-06-01 2021-09-03 上海和汇安全用品有限公司 头盔镜片的微开机构
US11213089B2 (en) 2019-06-04 2022-01-04 Msa Technology, Llc Protective helmet with face protection shield and linkage mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3139978A1 (fr) 2022-09-28 2024-03-29 Shark Platine d’accouplement pour un écran sur une coque d’un casque, et casque associé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437798A1 (fr) * 1978-10-03 1980-04-30 Landi Cesare Dispositif de commande du positionnement de la visiere d'un casque sportif
DE3030522A1 (de) * 1979-09-03 1981-03-26 Cesare Milano Landi Vorrichtung zum oeffnen des visiers eines sturzhelms
JPS5892329U (ja) * 1981-12-12 1983-06-22 東京シ−ト株式会社 ヘルメットのシールドスクリーン取付装置
JPH0350022U (de) * 1989-09-21 1991-05-15
JPH07207511A (ja) * 1993-12-30 1995-08-08 Yamaha Motor Co Ltd ヘルメットのシールド枢支機構
EP1216626A1 (de) * 2000-12-05 2002-06-26 Arai Helmet Limited Vorrichtung zum Festhalten einer Visierscheibe an einem Helm
US6622314B1 (en) * 2002-05-31 2003-09-23 Young-Il Kim Coupling apparatus for helmet shield

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437798A1 (fr) * 1978-10-03 1980-04-30 Landi Cesare Dispositif de commande du positionnement de la visiere d'un casque sportif
DE3030522A1 (de) * 1979-09-03 1981-03-26 Cesare Milano Landi Vorrichtung zum oeffnen des visiers eines sturzhelms
JPS5892329U (ja) * 1981-12-12 1983-06-22 東京シ−ト株式会社 ヘルメットのシールドスクリーン取付装置
JPH0350022U (de) * 1989-09-21 1991-05-15
JPH07207511A (ja) * 1993-12-30 1995-08-08 Yamaha Motor Co Ltd ヘルメットのシールド枢支機構
EP1216626A1 (de) * 2000-12-05 2002-06-26 Arai Helmet Limited Vorrichtung zum Festhalten einer Visierscheibe an einem Helm
US6622314B1 (en) * 2002-05-31 2003-09-23 Young-Il Kim Coupling apparatus for helmet shield

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2716000A1 (es) * 2017-12-01 2019-06-07 Tomas Manuf Casco protector para motoristas con visera de protección solar
US11213089B2 (en) 2019-06-04 2022-01-04 Msa Technology, Llc Protective helmet with face protection shield and linkage mechanism
CN113331528A (zh) * 2021-06-01 2021-09-03 上海和汇安全用品有限公司 头盔镜片的微开机构

Also Published As

Publication number Publication date
FR2951055A1 (fr) 2011-04-15
FR2951055B1 (fr) 2014-06-13

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