EP1283017A1 - Visor - Google Patents

Visor Download PDF

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Publication number
EP1283017A1
EP1283017A1 EP02291896A EP02291896A EP1283017A1 EP 1283017 A1 EP1283017 A1 EP 1283017A1 EP 02291896 A EP02291896 A EP 02291896A EP 02291896 A EP02291896 A EP 02291896A EP 1283017 A1 EP1283017 A1 EP 1283017A1
Authority
EP
European Patent Office
Prior art keywords
screen
wind
assembly according
gravity
mounting
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.)
Granted
Application number
EP02291896A
Other languages
German (de)
French (fr)
Other versions
EP1283017B1 (en
Inventor
Jean-Noel Acquaviva
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
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Filing date
Publication date
Priority claimed from FR0110712A external-priority patent/FR2828385A1/en
Application filed by Individual filed Critical Individual
Publication of EP1283017A1 publication Critical patent/EP1283017A1/en
Application granted granted Critical
Publication of EP1283017B1 publication Critical patent/EP1283017B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A42B3/221—Attaching visors to helmet shells, e.g. on motorcycle helmets
    • 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
    • A42B3/224—Attaching visors to helmet shells, e.g. on motorcycle helmets with electrical actuation means
    • 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
    • A42B3/24—Visors with means for avoiding fogging or misting

Definitions

  • the present invention relates to windscreens vision protectors.
  • Such transparent screens equip, for example, the helmets for drivers of open vehicles.
  • the screen removable, forms a kind of crescent with two articulated lateral ends on the helmet, for, for manual operation, fold it down in front of the eyes functional protection, or to raise it in position resting, visor.
  • FR 2 541 092 teaches a vertical suspended screen, pivoted on the upper edge of an opening of vision of a full face helmet.
  • the screen is plated in position closed against the lower edge by the wind pressure, against the force of a return spring in position slightly spread. The condensation is thus evacuated.
  • the screen in both positions, remains in front the eyes, because it unmasks only a small opening, turned down. But if the relative wind on the helmet is low or zero, for example if the wearer of the helmet is at low speed or at a standstill, the mist is not evacuated, or very slowly.
  • FR 2 402 455 teaches a helmet carrying a lever comprising two downward-mounted lateral fins, mounted rotating behind a hinge axis of a screen on helmet.
  • the fins receive the wind by their face lower and then back up by pivoting while aligning on the horizontal direction of the longitudinal wind, coming front.
  • the screen is folded in front of the eyes.
  • Such an assembly is insufficiently sensitive to the headwind, so that the screen stays up at speeds at which he should protect the eyes.
  • the set is furthermore cumbersome and, moreover, disturbances of the wind path risk of causing unexpected shifts, since gusts of wind, sideways or downwards, can modify the expected wind direction, longitudinal, for lift the fins. In case of gust in one direction cross-section, the screen may therefore open up even high speed of the wind.
  • a head movement of the wearer of the headphones may have the same disruptive effect.
  • the operation of the assembly is not reliable.
  • the present invention aims to propose a set to screen with improved reliability in use.
  • the invention relates to a screen assembly of windproof vision, including means of mounting mobile screen on a carrier element, arranged for cooperate with a user's head, so that the screen is mobile between a functional position defining a fixed functional solid angle of vision, with eye protection of the user, and a position of rest, corresponding to a solid angle of repose less than the functional solid angle, under the control of means of wind pressure sensors, characterized by the fact that means wind pressure sensors are arranged to control the passage of the one, predetermined, from one position to another, while remaining opposed to the wind.
  • the sensor means are opposed to the wind, that is, turned longitudinally forward, they have a maximum transversal profile with respect to the expected longitudinal direction of the wind. If, the wind planned longitudinal, therefore with purely vector from the front, turns and becomes oblique by acquiring a transverse vector component, following a burst transversal, the sensor means still capture the longitudinal component of the wind.
  • the sensor means present a cone of sensitivity, around the longitudinal direction of arrival of the wind, which keeps it functional.
  • the carrier element of such a set can be a headphones, a spectacle frame or other.
  • the helmet referenced 1 in Figure 1 wears a windproof screen mobile vision device 10 consisting essentially of a sheet or shutter of transparent material shaped to close an opening of classical field of view 9 of the helmet 1.
  • the screen 10 is intermediate form between a sphere sector and a cylinder sector.
  • the screen 10 comprises an anterior part 10A, of front profile referenced 11, and two side parts posterior 10L, only one of which is visible here.
  • the screen 10 is bounded by a lower edge 12, two rear edges 13 and an upper edge 14, to which correspond respectively abutment edges: lower 2, rear 3 and upper 4, of the opening 9.
  • the screen 10 is mounted on the helmet 1 by means of a articulation hinge 19 which comprises a first element, fixed in the middle of the upper edge 14 of the screen 10, a second element, fixed in the middle of the upper edge 4 corresponding, and an axis 19A, articulation of the first and second element above, axis 19A which runs through perpendicularly a median plane 50 of symmetry of the helmet 1, vertical in Figure 1.
  • a articulation hinge 19 which comprises a first element, fixed in the middle of the upper edge 14 of the screen 10, a second element, fixed in the middle of the upper edge 4 corresponding, and an axis 19A, articulation of the first and second element above, axis 19A which runs through perpendicularly a median plane 50 of symmetry of the helmet 1, vertical in Figure 1.
  • the screen 10 is in position opening, or rest, and therefore does not completely the opening 9.
  • the center of gravity G of the material constituting the screen 10 is then located in a plane vertical transverse 19V, suspension screen 10, plane passing through the axis 19A.
  • the screen 10 delimits a determined solid angle 7 of eye protection 5 of the helmet wearer 1.
  • center of gravity G was pushed back from the 19V plane, under the effect of an external force, due to the pressure of the wind on the screen 10.
  • the distance between the center of gravity G and the 19V plane determines a couple of recall to the position of rest, or opening, of the figure 1, couple overcome by the force of wind pressure, when the wind reaches a determined relative speed, here about 20 km / hour.
  • the screen 10 determines another determined solid angle 8 of eye protection 5, greater than the solid angle 7, since the lower edge of the screen 10 is folded towards the low.
  • the tilting torque of the screen 10 to the opening position is essentially due to the weight of side parts 10L, of which, overall, the mass is clearly behind the 19V suspension plan.
  • the center of gravity G can be deported backwards at means of an extra thickness of the screen material 10 in the rear edge area 13.
  • the front part 10A of the screen 10 is substantially perpendicular to the direction longitudinal wind, so that the screen 10, so opposite in the wind, still catch the wind even in case of gust lateral.
  • the screen 10 In the open position, the screen 10 still presents, partially, a surface oriented transversely to the wind, to undergo a minimum torque of pressure force, which grows with speed and moves to the position of closing.
  • the screen 10 thus constitutes a permanent sensor of the wind, sensor always having an apparent surface of longitudinal wind, or profile in a vertical plane transverse surface, which always opposes the wind and receives a pressure vector force, directed vector passing under axis 19A and opposing the force of return to the rest position. Screen 10 is so directly a permanent sensor of the intensity of the wind.
  • the switching of the screen 10 to the open position a in fact two effects. First, it creates a catch of air through which the outside air can enter the headset 1, which eliminates condensation on the screen 10. Moreover, the wearer of the helmet 1 can see directly the outdoor scene (lines of vision V).
  • FIGS. 3 and 4 differs only from that of Figures 1 and 2 in that the screen 10 is pivotally mounted, by the hinge 19, on a peripheral screen 20 removably mounted, manually, on the headphones 1.
  • the peripheral screen 20 constitutes a 10 monitor mount adapter on the headset 1.
  • the screen 10 thus constitutes the equivalent of a moving flap which would have been cut out of a full classical screen 10, 20, connected to the helmet 1 by two opposite hinges 21 (only one visible) at the top corners rear opposite, at the level of the ears.
  • the composite screen 10, 20 can be removed from the headphones 1 or to be flipped upwards in visor position.
  • the tilting of the screen 10 could be made to one side of the helmet 1 with for example a substantially vertical axis of rotation offset from the median plane 50.
  • the mounting elements comprise hinge support members (21), (not shown, of the kind of rear joints 21) arranged for example on a rear portion of the lower edge 12, so that that the screen 10 has a center of gravity G mobile in cantilevered, that is, located in front of the elements articulation supports (21), with respect to the direction longitudinal wind arrival, so that the gravity reminds the screen 10 to the rest position, by tilting down, against the pressure of the wind tending to recall the screen 10, by tilting, towards the top.
  • hinge support members (21) (not shown, of the kind of rear joints 21) arranged for example on a rear portion of the lower edge 12, so that that the screen 10 has a center of gravity G mobile in cantilevered, that is, located in front of the elements articulation supports (21), with respect to the direction longitudinal wind arrival, so that the gravity reminds the screen 10 to the rest position, by tilting down, against the pressure of the wind tending to recall the screen 10, by tilting, towards the top.
  • the mounting elements then comprise elements of translation of the screen 10 arranged so that the screen 10 has a mobile center of gravity G, recalled by gravity to a low position, corresponding to the position of rest on the screen 10, in which it remains sensitive to the wind to be recalled to the closed position by raising the center of gravity G to a high position, under the action of the wind.
  • this translation can be directed forward and / or be lateral, sideways or upwards or low, compared to a line of sight V substantially longitudinal.
  • FIG. 5 is a section in partial view from above illustrating a first embodiment of a screen lock device 10 in the position of closure according to any one of the embodiments.
  • the peripheral screen support 20 comprises in the lower part (or the lower edge 2 of the helmet 1 alternatively), a housing 36 with forward-facing opening, wherein penetrates an appendage 16, turned towards the back, solidary of the lower edge 12 of the screen 10.
  • the assembly 36, 16 here presents a symmetry with respect to the median plane 50.
  • the arrow F1 indicates the longitudinal direction of the wind, to the back, and also the direction of crimping the screen 10.
  • the housing 36 has a mouth 39 of width reduced, while two sidewall areas 37 of the housing 36, generally parallel to the median plane 50, constitute the respective bottoms of two lateral cavities opposite 38, relative to which the mouth 39 constitutes two opposite reliefs facing the median plane 50.
  • Appendix 16 has two faces or surfaces side 17, generally parallel to the plane 50, comprising two respective lateral reliefs 18, turned away from the plan 50. In the retracted, closing position, the reliefs side 18 are laterally entirely opposite cavities 38. The distance between the tops of the two reliefs 18 corresponds to the width of the mouth 39 of the dwelling 36, plus a slight margin of play.
  • the hinge 19 has a mechanical play so that the lower part 12 of the screen 10 can move, or twist, laterally a few tenths of a millimeter case of side wind.
  • the relief 18 which deviates from the plane median 50 under the effect of the side wind, enters the cavity 38 opposite and thus locks the screen 10 in closing position.
  • FIG. 6A represents an exploded perspective view in three quarters before, a second example of realization a screen locking device 10 in position closure.
  • Figure 6B is a very front view schematic.
  • a hook 42 or mobile locking finger in closing position, is rotatably mounted to secure temporarily the screen 10 with the peripheral screen 20 (or, alternatively, with the helmet 1).
  • the finger 42 is mounted rotatable about a longitudinal axis 41.
  • the finger 42 is secured to a rotary pallet 44 actuated by the wind, housed, in this example, in a fairing element 46 (Fig. 4) to channel the wind towards the pallet 44.
  • the pallet 44 extends to rest in the median plane 50, so perpendicular to the transverse direction of extension of the fairing element 46.
  • the fairing element 46 has a section transverse U-shaped, open rearward, and the vertex edges of the U are applied against an area 60 of the lower part of the peripheral screen 20, in order to close laterally the top of the U of the fairing element 46.
  • a first end of axis 41 is carried by the edge of a hole 47 in the upper part of the anterior surface (base U) of the fairing element 46, a second opposite end being carried by the edge of a hole 61 of zone 60.
  • the finger 42 has a hole 40 for the passage of the axis 41 and suspension of the pallet 44.
  • the fairing element 46 constitutes, with the zone 60, a kind of transverse tube housing the pallet 44, the finger 42 which can protrude through a slot or notch 48 of the upper wall of the tube 46, 60, slot 48 extending longitudinally relative to the tube 46, 60.
  • a gust of lateral wind that would "cut” the wind face and would be likely to cause a bearing accidental screen 10 causes a rotation of the pallet 44 (FIG 6B) and therefore an output of the finger 42, by the slot 48, in the locking position.
  • there are actually two opposite fingers 42 and 43 that is to say that the pallet 44 constitutes the trunk of a suspended tee at the intersection of its trunk with its branches 42, 43 forming fingers or locking cams. All locking above can be mounted on the part bass 5 of the helmet 1 or the screen 20, and then the finger 42 or 43 goes up by rotation in front of the lower edge 12 of the screen 10, thus locking it.
  • the locking device above could be mounted on the screen 10, at an area of the lower edge 12 replacing the zone 60, so that the finger 42, 43 rotate, from its rest position, protruding down, the T 42, 43, 44 then being suspended returned, to cling to the inner edge of the screen 20 or at the edge 5 of the helmet 1.
  • Figure 7 represents the third form of realization of the screen helmet.
  • This example corresponds to the example of Figure 4, but the screens 10 and 20 form a set of one piece, mounted articulated on the helmet 1 by the joints 21.
  • the reference 10 designates the transparent part of the screen 10, 20 and the reference 20 designates the adapter peripheral frame portion of mounting on the headphones 1.
  • the screen 10, 20 is associated with an engine actuator 21M for passing the screen 10 one to the other of its functional, extreme positions, for example from the closed position, here represented, to the open position, in which the screen 10 has rotated up around the joints 21 to form a kind of visor substantially horizontal.
  • a pile or battery powers the 21M motor, forming a whole here monobloc with this one.
  • the engine 21M is here a rotary engine focused on one articulations 21 and controlled by a device 70 of measurement of the relative wind pressure, including a comparator 72 compares the measured value of pressure with a threshold of reference and controls the rotation of the motor 21M in a predetermined direction when the threshold is crossed in one direction predetermined.
  • the device 70 functionally belongs to the assembly comprising the screen 10, 20 and its elements of fitting 21 with the motor 21M, but the device 70 could be mounted independently of the rest of the elements of this set.
  • the device 70 is thus, in this example, fixed in the upper part of the helmet 1, and precisely against the wind, that is to say turned towards the longitudinal direction of wind arrival.
  • the device 70 controls a rotation of the motor 21M in the direction of the folding of the screen 10, 20 in the closed position.
  • the passage in return from the closed position to the position opening can be controlled by elastic return, by example by one or two springs in spiral or helix mounted at the respective joints 21.
  • elastic return by example by one or two springs in spiral or helix mounted at the respective joints 21.
  • the device 70 is provided to control the passage of the closing position to the open position, when the wind pressure drops below the threshold.
  • Screen 10, 20 must remain sensitive to the wind, even in of opening, so that the wind folds it, by order direct mechanics, in the closed position when the threshold is exceeded.
  • the screen 10, 20 therefore constitutes a sensor of wind pressure.
  • the a predetermined meaning occurs when crossing the reference threshold of the device 70 according to the said direction, while the reversal in the opposite direction is linked to the wind sensitivity of the screen 10, 20 in the position reached on command of the device 70, respectively closing and opening.
  • the pressure force for the Reversal can therefore correspond to a threshold of mechanical tilting of different value than threshold in the device 70.
  • the mechanical threshold is greater than the threshold of the device 70 to produce a hysteresis effect, avoiding oscillations of the screen 10, 20.
  • the comparator 72 can, however, also work in both directions, to control the recall to the initial position, opposite the predetermined direction above.
  • the device 70 may be a purely mechanical device, comprising for example a membrane 71 to elastic deformation, extending in a vertical plane transversal to the wind direction of arrival to present a transverse surface, apparent, or profile maximum, therefore constant, to ensure accurate measurement being at best sensitive to pressure.
  • the membrane 71 controls the movement of a contact element switch (72), not shown, (equivalent of comparator 72) which controls the motor 21M when the pressure reaches a threshold of deformation of the membrane 71.
  • the state of the contact (72) determines the direction of the control of the motor 21M or two such assemblies are provided for membrane, with different thresholds to control the 21M motor in both directions respectively, with hysteresis.
  • the membrane 71 can be provided a rotary pallet assembly of the kind of pallet 44.
  • the movement of the rotary vane (like 44) can slow down by coupling it to a viscous product, such as glycerin, whose viscous friction requires work of a force.
  • This viscous product thus has a integration function of the wind pressure force, filtering its temporary variations.
  • the membrane 71 above or equivalent present still, by a housing bearing, a transverse profile maximum, opposing the passage of the wind, even if the surface useful of the sensor element 71 is then turned towards the back, that is to say according to the departure direction of the wind.
  • the actuator motor 21M is here of the step type, for, in the absence of a command, lock the screen 10, 20 in the last position ordered, eventually intermediate as explained below.
  • the device 70 is of the electric type or electronics, for example an integrated circuit 70 integrating the membrane 71, on which is plated a conductive ink track constituting a resistor calibrated strain gauge mounted in a bridge of Wheatstone. Bridge unbalance voltage, representing the wind pressure, is applied to a input of the comparator circuit 72, which receives the value of pressure threshold on another input, coming from a memory element.
  • the comparator circuit 72 controls the 21M motor according to the sense of level inequality between its two inputs, according to the control principles exposed more above.
  • An integrating circuit at the input or at the output of the comparator circuit 72, can be provided to filter the pressure fluctuations.
  • the comparator circuit 72 is an integrated circuit, memory and microprocessor, programmable by a user to set several values of the pressure threshold, some correspond to intermediate positions opening of the screen 10, which, thanks to the stepper motor 21M, can thus occupy a half-open position in a intermediate speed range, for example from 20 to 30 km / hour.

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  • Helmets And Other Head Coverings (AREA)

Abstract

The visor (10) for a crash helmet has a central hinge (19) to attach it to the helmet so that when raised it is held against wind pressure. The visor is automatically moved to a rest position dependent on signals from wind pressure sensors. The visor mounting allows the force of gravity to oppose the wind force. The mounting can include a peripheral screen for attachment of the visor to the helmet.

Description

Domaine de l'inventionField of the invention

La présente invention concerne les écrans coupe-vent protecteurs de vision.The present invention relates to windscreens vision protectors.

De tels écrans transparents équipent, par exemple, les casques pour conducteurs de véhicules découverts. L'écran, amovible, forme une sorte de croissant comportant deux extrémités latérales articulées sur le casque, pour, par manoeuvre manuelle, le rabattre devant les yeux, en position fonctionnelle de protection, ou bien le relever en position de repos, en visière.Such transparent screens equip, for example, the helmets for drivers of open vehicles. The screen, removable, forms a kind of crescent with two articulated lateral ends on the helmet, for, for manual operation, fold it down in front of the eyes functional protection, or to raise it in position resting, visor.

Toutefois, la buée de condensation due à la transpiration gêne la vision, si bien qu'il faut fréquemment commuter l'écran d'une position à l'autre, en le relevant temporairement, pour mieux voir une scène observée, en l'observant directement, sous l'écran relevé, et pour aérer l'arrière de l'écran.However, the condensation caused by the perspiration hinders the vision, so it takes frequently switch the screen from one position to another, temporarily raising it, to better see a scene observed, by observing it directly, under the raised screen, and to ventilate the back of the screen.

Ces manoeuvres de commutation entre les deux positions sont une gêne, et même, dans cet exemple, un danger du fait de la perte d'attention qu'elles provoquent.These switching maneuvers between the two positions are an embarrassment, and even, in this example, a danger of of the loss of attention they cause.

Art antérieurPrior art

FR 2 541 092 enseigne un écran vertical suspendu, monté pivotant sur le bord supérieur d'une ouverture de vision d'un casque intégral. L'écran est plaqué en position fermée contre le bord inférieur par la pression du vent, contre la force d'un ressort de rappel en position légèrement écartée. La condensation est ainsi évacuée. Toutefois, l'écran, dans ses deux positions, reste devant les yeux, car il ne démasque qu'une faible ouverture, tournée vers le bas. Or, si le vent relatif sur le casque est faible ou nul, par exemple si le porteur du casque est à faible vitesse ou à l'arrêt, la buée n'est pas évacuée, ou bien très lentement.FR 2 541 092 teaches a vertical suspended screen, pivoted on the upper edge of an opening of vision of a full face helmet. The screen is plated in position closed against the lower edge by the wind pressure, against the force of a return spring in position slightly spread. The condensation is thus evacuated. However, the screen, in both positions, remains in front the eyes, because it unmasks only a small opening, turned down. But if the relative wind on the helmet is low or zero, for example if the wearer of the helmet is at low speed or at a standstill, the mist is not evacuated, or very slowly.

FR 2 402 455 enseigne un casque portant un levier comprenant deux ailerons latéraux descendants, montés rotatifs en arrière d'un axe d'articulation d'un écran sur le casque. Les ailerons reçoivent le vent par leur face inférieure et remontent donc par pivotement en s'alignant sur la direction horizontale du vent longitudinal, venant de face. De ce fait, l'écran est rabattu devant les yeux. Un tel montage est insuffisamment sensible au vent de face, si bien que l'écran reste relevé à des vitesses auxquelles il devrait protéger les yeux. L'ensemble est en outre encombrant et, de plus, des perturbations du trajet du vent risquent de provoquer des basculements inopinés, puisque des rafales de vent, latérale ou descendante, peuvent modifier la direction prévue du vent, longitudinale, pour soulever les ailerons. En cas de rafale dans une direction transversale, l'écran risque donc de d'ouvrir, même à vitesse élevée du vent. Un mouvement de tête du porteur du casque risque d'avoir le même effet perturbateur. Le fonctionnement du montage n'est donc pas fiable.FR 2 402 455 teaches a helmet carrying a lever comprising two downward-mounted lateral fins, mounted rotating behind a hinge axis of a screen on helmet. The fins receive the wind by their face lower and then back up by pivoting while aligning on the horizontal direction of the longitudinal wind, coming front. As a result, the screen is folded in front of the eyes. Such an assembly is insufficiently sensitive to the headwind, so that the screen stays up at speeds at which he should protect the eyes. The set is furthermore cumbersome and, moreover, disturbances of the wind path risk of causing unexpected shifts, since gusts of wind, sideways or downwards, can modify the expected wind direction, longitudinal, for lift the fins. In case of gust in one direction cross-section, the screen may therefore open up even high speed of the wind. A head movement of the wearer of the headphones may have the same disruptive effect. The operation of the assembly is not reliable.

Résumé de l'inventionSummary of the invention

La présente invention vise à proposer un ensemble à écran présentant une meilleure fiabilité en utilisation.The present invention aims to propose a set to screen with improved reliability in use.

A cet effet, l'invention concerne un ensemble à écran de vision coupe-vent, comportant des moyens de montage mobile de l'écran sur un élément porteur, agencé pour coopérer avec la tête d'un utilisateur, afin que l'écran soit mobile entre une position fonctionnelle définissant un angle solide fonctionnel déterminé de vision, avec protection des yeux de l'utilisateur, et une position de repos, correspondant à un angle solide homologue de repos inférieur à l'angle solide fonctionnel, sous la commande de moyens capteurs de pression de vent, caractérisé par le fait que les moyens capteurs de pression de vent sont agencés pour commander le passage de l'une, prédéterminée, des dites positions à l'autre en restant opposés au vent.For this purpose, the invention relates to a screen assembly of windproof vision, including means of mounting mobile screen on a carrier element, arranged for cooperate with a user's head, so that the screen is mobile between a functional position defining a fixed functional solid angle of vision, with eye protection of the user, and a position of rest, corresponding to a solid angle of repose less than the functional solid angle, under the control of means of wind pressure sensors, characterized by the fact that means wind pressure sensors are arranged to control the passage of the one, predetermined, from one position to another, while remaining opposed to the wind.

Ainsi, comme les moyens capteurs sont opposés au vent, c'est-à-dire tournés longitudinalement vers l'avant, ils présentent un profil transversal maximal par rapport à la direction longitudinale prévue du vent. Si, le vent longitudinal prévu, donc à direction vectorielle purement de face, tourne et devient oblique en acquérant une composante vectorielle transversale, suite à une rafale transversale, les moyens capteurs captent encore la composante longitudinale du vent. Les moyens capteurs présentent ainsi un cône de sensibilité, autour de la direction longitudinale d'arrivée du vent, qui les maintient fonctionnels.Thus, as the sensor means are opposed to the wind, that is, turned longitudinally forward, they have a maximum transversal profile with respect to the expected longitudinal direction of the wind. If, the wind planned longitudinal, therefore with purely vector from the front, turns and becomes oblique by acquiring a transverse vector component, following a burst transversal, the sensor means still capture the longitudinal component of the wind. The sensor means present a cone of sensitivity, around the longitudinal direction of arrival of the wind, which keeps it functional.

L'élément porteur d'un tel ensemble peut être un casque, une monture de lunettes ou autre.The carrier element of such a set can be a headphones, a spectacle frame or other.

Brève description des dessinsBrief description of the drawings

L'invention sera mieux comprise à l'aide de la description suivante de trois formes de réalisation préférées de l'ensemble à écran de l'invention, en référence au dessin annexé, sur lequel :

  • la figure 1 est une vue latérale d'un casque intégral comportant l'ensemble à écran de l'invention, en position d'ouverture, selon la première forme de réalisation,
  • la figure 2 correspond à la figure 1, l'écran étant en position fonctionnelle, de fermeture,
  • la figure 3 est une vue de trois quarts de face du même casque intégral dans la deuxième forme de réalisation de l'ensemble à écran, représenté en position d'ouverture, monté sur le casque au moyen d'un écran périphérique,
  • la figure 4 correspond à la figure 3, l'écran étant en position de fermeture,
  • la figure 5 est une vue de dessus d'un premier dispositif de verrouillage de l'écran en position de fermeture,
  • la figure 6, formée des figures 6A et 6B, représente un deuxième dispositif de verrouillage de l'écran en position de fermeture, et
  • la figure 7 est une vue de la troisième forme de réalisation, homologue de la figure 4, avec un moteur d'actionnement de l'écran.
The invention will be better understood with the aid of the following description of three preferred embodiments of the screen assembly of the invention, with reference to the appended drawing, in which:
  • FIG. 1 is a side view of an integral helmet comprising the screen assembly of the invention, in the open position, according to the first embodiment,
  • FIG. 2 corresponds to FIG. 1, the screen being in the operative position, of closing,
  • FIG. 3 is a three-quarter front view of the same integral helmet in the second embodiment of the screen assembly, shown in the open position, mounted on the helmet by means of a peripheral screen,
  • FIG. 4 corresponds to FIG. 3, the screen being in the closed position,
  • FIG. 5 is a view from above of a first locking device of the screen in the closed position,
  • FIG. 6, formed of FIGS. 6A and 6B, represents a second device for locking the screen in the closed position, and
  • Figure 7 is a view of the third embodiment, homologous to Figure 4, with an actuating motor of the screen.

Description des formes de réalisation préféréesDescription of Preferred Embodiments

Le casque référencé 1 sur la figure 1, dans cet exemple un casque intégral, porte un écran coupe-vent mobile de vision 10 constitué essentiellement d'une feuille ou volet de matériau transparent conformé pour fermer une ouverture de champ de vision classique 9 du casque 1. L'écran 10 est de forme intermédiaire entre un secteur de sphère et un secteur de cylindre.The helmet referenced 1 in Figure 1, in this example a full face helmet, wears a windproof screen mobile vision device 10 consisting essentially of a sheet or shutter of transparent material shaped to close an opening of classical field of view 9 of the helmet 1. The screen 10 is intermediate form between a sphere sector and a cylinder sector.

L'écran 10 comporte une partie antérieure 10A, de profil avant référencé 11, et deux parties latérales postérieures 10L, dont une seule est ici visible. L'écran 10 est limité par un bord inférieur 12, deux bords arrière 13 et un bord supérieur 14, auxquels correspondent respectivement des bords de butée : inférieur 2, arrière 3 et supérieur 4, de l'ouverture 9.The screen 10 comprises an anterior part 10A, of front profile referenced 11, and two side parts posterior 10L, only one of which is visible here. The screen 10 is bounded by a lower edge 12, two rear edges 13 and an upper edge 14, to which correspond respectively abutment edges: lower 2, rear 3 and upper 4, of the opening 9.

L'écran 10 est monté sur le casque 1 au moyen d'une charnière 19 d'articulation qui comporte un premier élément, fixé au milieu du bord supérieur 14 de l'écran 10, un second élément, fixé au milieu du bord supérieur 4 correspondant, et un axe 19A, d'articulation des premier et second éléments ci-dessus, axe 19A qui traverse perpendiculairement un plan médian 50 de symétrie du casque 1, vertical sur la figure 1.The screen 10 is mounted on the helmet 1 by means of a articulation hinge 19 which comprises a first element, fixed in the middle of the upper edge 14 of the screen 10, a second element, fixed in the middle of the upper edge 4 corresponding, and an axis 19A, articulation of the first and second element above, axis 19A which runs through perpendicularly a median plane 50 of symmetry of the helmet 1, vertical in Figure 1.

Sur la figure 1, l'écran 10 est en position d'ouverture, ou repos, et n'obture donc pas complètement l'ouverture 9. Le centre de gravité G du matériau constituant l'écran 10 est alors situé dans un plan vertical transverse 19V, de suspension de l'écran 10, plan passant par l'axe 19A. Dans la position d'ouverture, l'écran 10 délimite un angle solide déterminé 7 de protection des yeux 5 du porteur du casque 1.In FIG. 1, the screen 10 is in position opening, or rest, and therefore does not completely the opening 9. The center of gravity G of the material constituting the screen 10 is then located in a plane vertical transverse 19V, suspension screen 10, plane passing through the axis 19A. In the open position, the screen 10 delimits a determined solid angle 7 of eye protection 5 of the helmet wearer 1.

Dans la position de fermeture de la figure 2, le centre de gravité G a été repoussé en arrière du plan 19V, sous l'effet d'une force externe, due à la pression du vent de face sur l'écran 10. La distance entre le centre de gravité G et le plan 19V détermine alors un couple de rappel vers la position de repos, ou d'ouverture, de la figure 1, couple vaincu par la force de pression du vent, lorsque le vent atteint une vitesse relative déterminée, ici d'environ 20 km/heure. Dans la position de fermeture, l'écran 10 détermine un autre angle solide déterminé 8 de protection des yeux 5, supérieur à l'angle solide 7, puisque le bord inférieur de l'écran 10 est rabattu vers le bas. Le couple de rappel en basculement de l'écran 10 vers la position d'ouverture est essentiellement dû au poids des parties latérales 10L, dont, globalement, la masse est nettement en arrière du plan de suspension 19V.In the closed position of FIG. center of gravity G was pushed back from the 19V plane, under the effect of an external force, due to the pressure of the wind on the screen 10. The distance between the center of gravity G and the 19V plane then determines a couple of recall to the position of rest, or opening, of the figure 1, couple overcome by the force of wind pressure, when the wind reaches a determined relative speed, here about 20 km / hour. In the closed position, the screen 10 determines another determined solid angle 8 of eye protection 5, greater than the solid angle 7, since the lower edge of the screen 10 is folded towards the low. The tilting torque of the screen 10 to the opening position is essentially due to the weight of side parts 10L, of which, overall, the mass is clearly behind the 19V suspension plan.

Il existe ainsi un angle solide de différence, entre les angles solides 7 et 8, formant un champ de vision directe, sans traverser l'écran 10 en position relevée, de repos, correspondant à des lignes de visée directe V. L'angle solide de différence est limité par le bord inférieur 2 de l'ouverture 9 et par le bord inférieur 12 de l'écran 10.There is thus a solid angle of difference between solid angles 7 and 8, forming a field of vision directly, without crossing the screen 10 in the raised position, rest, corresponding to direct lines of sight V. The solid angle of difference is limited by the edge lower 2 of the opening 9 and by the lower edge 12 of the screen 10.

Pour accroítre l'angle de pivotement de l'écran 10, le centre de gravité G peut être déporté vers l'arrière au moyen d'une surépaisseur du matériau de l'écran 10 dans la zone du bord arrière 13.To increase the pivot angle of the screen 10, the center of gravity G can be deported backwards at means of an extra thickness of the screen material 10 in the rear edge area 13.

En position de fermeture, la partie antérieure 10A de l'écran 10 est sensiblement perpendiculaire à la direction longitudinale du vent, si bien que l'écran 10, ainsi opposé au vent, capte encore bien le vent, même en cas de rafale latérale.In the closed position, the front part 10A of the screen 10 is substantially perpendicular to the direction longitudinal wind, so that the screen 10, so opposite in the wind, still catch the wind even in case of gust lateral.

En position d'ouverture, l'écran 10 présente encore, partiellement, une surface orientée transversement au vent, pour subir un couple au moins minimal de force de pression, qui croít avec la vitesse et fait passer en position de fermeture.In the open position, the screen 10 still presents, partially, a surface oriented transversely to the wind, to undergo a minimum torque of pressure force, which grows with speed and moves to the position of closing.

L'écran 10 constitue ainsi un capteur permanent du vent, capteur présentant toujours une surface apparente de prise au vent longitudinal, ou profil dans un plan vertical transverse, surface qui s'oppose toujours au vent et en reçoit une force vectorielle de pression, dirigée selon un vecteur passant sous l'axe 19A et s'opposant à la force de rappel vers la position de repos. L'écran 10 constitue ainsi directement un capteur permanent de l'intensité du vent.The screen 10 thus constitutes a permanent sensor of the wind, sensor always having an apparent surface of longitudinal wind, or profile in a vertical plane transverse surface, which always opposes the wind and receives a pressure vector force, directed vector passing under axis 19A and opposing the force of return to the rest position. Screen 10 is so directly a permanent sensor of the intensity of the wind.

Le basculement de l'écran 10 en position d'ouverture a en fait deux effets. Tout d'abord, cela crée une prise d'air par laquelle l'air extérieur peut pénétrer dans le casque 1, ce qui élimine la condensation sur l'écran 10. Par ailleurs, le porteur du casque 1 peut voir directement la scène extérieure (lignes de vision V). The switching of the screen 10 to the open position a in fact two effects. First, it creates a catch of air through which the outside air can enter the headset 1, which eliminates condensation on the screen 10. Moreover, the wearer of the helmet 1 can see directly the outdoor scene (lines of vision V).

La variante de réalisation des figures 3 et 4 diffère uniquement de celle des figures 1 et 2 par le fait que l'écran 10 est monté pivotant, par la charnière 19, sur un écran périphérique 20 monté amovible, de façon manuelle, sur le casque 1. L'écran périphérique 20 constitue un adaptateur de montage de l'écran 10 sur le casque 1. L'écran 10 constitue ainsi l'équivalent d'un volet mobile qui aurait été découpé dans un écran classique complet 10, 20, relié au casque 1 par deux articulations opposées 21 (une seule étant visible) au niveau de coins supérieurs arrière opposés, au niveau des oreilles. De façon classique, l'écran composite 10, 20 peut être enlevé du casque 1 ou bien être basculé en bloc vers le haut, en position de visière.The variant embodiment of FIGS. 3 and 4 differs only from that of Figures 1 and 2 in that the screen 10 is pivotally mounted, by the hinge 19, on a peripheral screen 20 removably mounted, manually, on the headphones 1. The peripheral screen 20 constitutes a 10 monitor mount adapter on the headset 1. The screen 10 thus constitutes the equivalent of a moving flap which would have been cut out of a full classical screen 10, 20, connected to the helmet 1 by two opposite hinges 21 (only one visible) at the top corners rear opposite, at the level of the ears. In a way conventional, the composite screen 10, 20 can be removed from the headphones 1 or to be flipped upwards in visor position.

Au travail qu'exerce le vent sur l'écran 10 opposé, pour le déplacer, on peut aussi opposer une force de rappel résultant d'une énergie stockée ou de la gravité s'exerçant sur l'écran 10.At the work done by the wind on the opposite screen 10, to move it, we can also oppose a force of recall resulting from stored energy or gravity on the screen 10.

En variante des diverses figures, le basculement de l'écran 10 pourrait s'effectuer vers un côté du casque 1 avec par exemple un axe de rotation sensiblement vertical décalé par rapport au plan médian 50.As a variant of the various figures, the tilting of the screen 10 could be made to one side of the helmet 1 with for example a substantially vertical axis of rotation offset from the median plane 50.

Encore en variante, les éléments de montage comportent des éléments supports d'articulation (21), (non dessinés, du genre des articulations arrière 21) disposés par exemple sur une partie arrière du bord inférieur 12, de façon à ce que l'écran 10 présente un centre de gravité G mobile en porte-à-faux, c'est-à-dire situé en avant des éléments supports d'articulation (21), par rapport à la direction longitudinale d'arrivée du vent, afin que la gravité rappelle l'écran 10 vers la position de repos, par basculement vers le bas, à l'encontre de la pression du vent tendant à rappeler l'écran 10, par basculement, vers le haut.In another variant, the mounting elements comprise hinge support members (21), (not shown, of the kind of rear joints 21) arranged for example on a rear portion of the lower edge 12, so that that the screen 10 has a center of gravity G mobile in cantilevered, that is, located in front of the elements articulation supports (21), with respect to the direction longitudinal wind arrival, so that the gravity reminds the screen 10 to the rest position, by tilting down, against the pressure of the wind tending to recall the screen 10, by tilting, towards the top.

Il pourrait aussi être prévu, en plus ou à la place d'une rotation, un mouvement de translation de l'écran 10. Les éléments de montage comportent alors des éléments de translation de l'écran 10 agencés pour que l'écran 10 présente un centre de gravité G mobile, rappelé par gravité vers une position basse, correspondant à la position de repos à l'écran 10, dans laquelle il reste sensible au vent pour être rappelé vers la position de fermeture par remontée du centre de gravité G jusqu'à une position haute, sous l'action du vent.It could also be expected, in addition to or instead a rotation, a translational movement of the screen 10. The mounting elements then comprise elements of translation of the screen 10 arranged so that the screen 10 has a mobile center of gravity G, recalled by gravity to a low position, corresponding to the position of rest on the screen 10, in which it remains sensitive to the wind to be recalled to the closed position by raising the center of gravity G to a high position, under the action of the wind.

Pour passer à la position de repos, à angle solide réduit, cette translation peut être dirigée vers l'avant et/ou être latérale, vers un côté ou vers le haut ou le bas, par rapport à une ligne de visée V sensiblement longitudinale.To move to the rest position, solid angle reduced, this translation can be directed forward and / or be lateral, sideways or upwards or low, compared to a line of sight V substantially longitudinal.

La figure 5 est une section en vue partielle de dessus illustrant un premier exemple de réalisation d'un dispositif de verrouillage de l'écran 10 en position de fermeture selon l'une quelconque des formes de réalisation. L'écran périphérique support 20 comporte en partie basse (ou le bord inférieur 2 du casque 1 en variante), un logement 36 à ouverture tournée vers l'avant, dans lequel pénètre un appendice 16, tourné vers l'arrière, solidaire du bord inférieur 12 de l'écran 10. L'ensemble 36, 16 présente ici une symétrie par rapport au plan médian 50. La flèche F1 indique la direction longitudinale du vent, vers l'arrière, et aussi la direction de rabattement de l'écran 10.Figure 5 is a section in partial view from above illustrating a first embodiment of a screen lock device 10 in the position of closure according to any one of the embodiments. The peripheral screen support 20 comprises in the lower part (or the lower edge 2 of the helmet 1 alternatively), a housing 36 with forward-facing opening, wherein penetrates an appendage 16, turned towards the back, solidary of the lower edge 12 of the screen 10. The assembly 36, 16 here presents a symmetry with respect to the median plane 50. The arrow F1 indicates the longitudinal direction of the wind, to the back, and also the direction of crimping the screen 10.

Le logement 36 comporte une embouchure 39 de largeur réduite, alors que deux zones de parois latérales 37 du logement 36, globalement parallèles au plan médian 50, constituent les fonds respectifs de deux cavités latérales opposées 38, par rapport auxquelles l'embouchure 39 constitue deux reliefs opposés tournés vers le plan médian 50. L'appendice 16 comporte deux faces ou surfaces latérales 17, globalement parallèles au plan 50, comportant deux reliefs latéraux respectifs 18, tournés à l'opposé du plan 50. En position rentrée, de fermeture, les reliefs latéraux 18 sont latéralement entièrement en regard des cavités 38. La distance entre les sommets des deux reliefs 18 correspond à la largeur de l'embouchure 39 du logement 36, augmentée d'une légère marge de jeu.The housing 36 has a mouth 39 of width reduced, while two sidewall areas 37 of the housing 36, generally parallel to the median plane 50, constitute the respective bottoms of two lateral cavities opposite 38, relative to which the mouth 39 constitutes two opposite reliefs facing the median plane 50. Appendix 16 has two faces or surfaces side 17, generally parallel to the plane 50, comprising two respective lateral reliefs 18, turned away from the plan 50. In the retracted, closing position, the reliefs side 18 are laterally entirely opposite cavities 38. The distance between the tops of the two reliefs 18 corresponds to the width of the mouth 39 of the dwelling 36, plus a slight margin of play.

L'articulation 19 comporte un jeu mécanique pour que la partie basse 12 de l'écran 10 puisse se déplacer, ou vriller, latéralement de quelques dixièmes de millimètre en cas de vent latéral.The hinge 19 has a mechanical play so that the lower part 12 of the screen 10 can move, or twist, laterally a few tenths of a millimeter case of side wind.

En pareil cas, le relief 18, qui s'écarte du plan médian 50 sous l'effet du vent latéral, pénètre dans la cavité 38 en regard et verrouille ainsi l'écran 10 en position de fermeture.In such a case, the relief 18, which deviates from the plane median 50 under the effect of the side wind, enters the cavity 38 opposite and thus locks the screen 10 in closing position.

La figure 6A représente, en vue éclatée en perspective en trois-quarts avant, un deuxième exemple de réalisation d'un dispositif de verrouillage de l'écran 10 en position de fermeture. La figure 6B en est une vue de face très schématique. Un croc 42, ou doigt mobile de verrouillage en position de fermeture, est monté rotatif pour solidariser temporairement l'écran 10 avec l'écran périphérique 20 (ou, en variante, avec le casque 1). Le doigt 42 est monté rotatif autour d'un axe longitudinal 41. Le doigt 42 est solidaire d'une palette rotative 44 d'actionnement par le vent, logée, dans cet exemple, dans un élément de carénage 46 (fig. 4) pour canaliser le vent vers la palette 44. La palette 44 s'étend au repos dans le plan médian 50, donc perpendiculairement à la direction transversale d'extension de l'élément de carénage 46.FIG. 6A represents an exploded perspective view in three quarters before, a second example of realization a screen locking device 10 in position closure. Figure 6B is a very front view schematic. A hook 42, or mobile locking finger in closing position, is rotatably mounted to secure temporarily the screen 10 with the peripheral screen 20 (or, alternatively, with the helmet 1). The finger 42 is mounted rotatable about a longitudinal axis 41. The finger 42 is secured to a rotary pallet 44 actuated by the wind, housed, in this example, in a fairing element 46 (Fig. 4) to channel the wind towards the pallet 44. The pallet 44 extends to rest in the median plane 50, so perpendicular to the transverse direction of extension of the fairing element 46.

L'élément de carénage 46 présente une section transversale en U couché, ouvert vers l'arrière, et les arêtes de sommet du U sont appliquées contre une zone 60 de la partie inférieure de l'écran périphérique 20, afin de fermer latéralement le sommet du U de l'élément de carénage 46. Une première extrémité de l'axe 41 est portée par le bord d'un trou 47 en partie haute de la face antérieure (base du U) de l'élément de carénage 46, une seconde extrémité opposée étant portée par le bord d'un trou 61 de la zone 60. Le doigt 42 comporte un trou 40 de passage de l'axe 41 et de suspension de la palette 44.The fairing element 46 has a section transverse U-shaped, open rearward, and the vertex edges of the U are applied against an area 60 of the lower part of the peripheral screen 20, in order to close laterally the top of the U of the fairing element 46. A first end of axis 41 is carried by the edge of a hole 47 in the upper part of the anterior surface (base U) of the fairing element 46, a second opposite end being carried by the edge of a hole 61 of zone 60. The finger 42 has a hole 40 for the passage of the axis 41 and suspension of the pallet 44.

L'élément de carénage 46 constitue, avec la zone 60, une sorte de tube transversal logeant la palette 44, le doigt 42 pouvant en faire saillie à travers une fente ou échancrure 48 de la paroi supérieure du tube 46, 60, fente 48 à extension longitudinale par rapport au tube 46, 60. Une rafale de vent latéral, qui « couperait » le vent de face et serait susceptible de provoquer un relèvement intempestif de l'écran 10, entraíne une rotation de la palette 44 (fig. 6B) et donc une sortie du doigt 42, par la fente 48, en position de verrouillage. Pour un fonctionnement dans les deux sens de rotation de la palette 44, il y a en fait deux doigts opposés 42 et 43, c'est-à-dire que la palette 44 constitue le tronc d'un T suspendu au niveau de l'intersection de son tronc avec ses branches 42, 43 formant doigts ou cames de verrouillage. L'ensemble de verrouillage ci-dessus peut être monté sur la partie basse 5 du casque 1 ou de l'écran 20, et alors le doigt 42 ou 43 remonte par rotation devant le bord inférieur 12 de l'écran 10, le verrouillant ainsi.The fairing element 46 constitutes, with the zone 60, a kind of transverse tube housing the pallet 44, the finger 42 which can protrude through a slot or notch 48 of the upper wall of the tube 46, 60, slot 48 extending longitudinally relative to the tube 46, 60. A gust of lateral wind that would "cut" the wind face and would be likely to cause a bearing accidental screen 10, causes a rotation of the pallet 44 (FIG 6B) and therefore an output of the finger 42, by the slot 48, in the locking position. For a operation in both directions of rotation of the pallet 44, there are actually two opposite fingers 42 and 43, that is to say that the pallet 44 constitutes the trunk of a suspended tee at the intersection of its trunk with its branches 42, 43 forming fingers or locking cams. All locking above can be mounted on the part bass 5 of the helmet 1 or the screen 20, and then the finger 42 or 43 goes up by rotation in front of the lower edge 12 of the screen 10, thus locking it.

En variante, le dispositif de verrouillage ci-dessus pourrait être monté sur l'écran 10, au niveau d'une zone du bord inférieur 12 remplaçant la zone 60, pour que le doigt 42, 43 fasse, par rotation depuis sa position de repos, saillie vers le bas, le T 42, 43, 44 étant alors suspendu retourné, pour s'accrocher au bord intérieur de l'écran 20 ou au bord 5 du casque 1.Alternatively, the locking device above could be mounted on the screen 10, at an area of the lower edge 12 replacing the zone 60, so that the finger 42, 43 rotate, from its rest position, protruding down, the T 42, 43, 44 then being suspended returned, to cling to the inner edge of the screen 20 or at the edge 5 of the helmet 1.

La figure 7 représente la troisième forme de réalisation du casque à écran. Cet exemple correspond à l'exemple de la figure 4, mais les écrans 10 et 20 forment un ensemble d'un seul tenant, monté articulé sur le casque 1 par les articulations 21. La référence 10 désigne la partie transparente de l'écran 10, 20 et la référence 20 désigne la partie de cadre périphérique adaptateur de montage sur le casque 1. A la différence d'un écran classique, l'écran 10, 20 est associé à un moteur d'actionnement 21M destiné à faire passer l'écran 10 de l'une à l'autre de ses positions fonctionnelles, extrêmes, par exemple de la position de fermeture, ici représentée, à la position d'ouverture, dans laquelle l'écran 10 a pivoté vers le haut autour des articulations 21 pour former une sorte de visière sensiblement horizontale. Une pile ou batterie alimente le moteur 21M, formant ici un ensemble monobloc avec celui-ci.Figure 7 represents the third form of realization of the screen helmet. This example corresponds to the example of Figure 4, but the screens 10 and 20 form a set of one piece, mounted articulated on the helmet 1 by the joints 21. The reference 10 designates the transparent part of the screen 10, 20 and the reference 20 designates the adapter peripheral frame portion of mounting on the headphones 1. Unlike a screen conventional, the screen 10, 20 is associated with an engine actuator 21M for passing the screen 10 one to the other of its functional, extreme positions, for example from the closed position, here represented, to the open position, in which the screen 10 has rotated up around the joints 21 to form a kind of visor substantially horizontal. A pile or battery powers the 21M motor, forming a whole here monobloc with this one.

Le moteur 21M est ici un moteur rotatif axé sur l'une des articulations 21 et commandé par un dispositif 70 de mesure de la pression du vent relatif, dont un comparateur 72 compare la valeur mesurée de pression à un seuil de référence et commande la rotation du moteur 21M dans un sens prédéterminé lorsque le seuil est franchi dans un sens prédéterminé. Le dispositif 70 appartient fonctionnellement à l'ensemble comportant l'écran 10, 20 et ses éléments de montage 21 avec le moteur 21M, mais le dispositif 70 pourrait toutefois être monté indépendamment du reste des éléments de cet ensemble. Le dispositif 70 est ainsi, dans cet exemple, fixé en partie haute du casque 1, et précisément opposé au vent, c'est-à-dire tourné vers la direction longitudinale d'arrivée du vent.The engine 21M is here a rotary engine focused on one articulations 21 and controlled by a device 70 of measurement of the relative wind pressure, including a comparator 72 compares the measured value of pressure with a threshold of reference and controls the rotation of the motor 21M in a predetermined direction when the threshold is crossed in one direction predetermined. The device 70 functionally belongs to the assembly comprising the screen 10, 20 and its elements of fitting 21 with the motor 21M, but the device 70 could be mounted independently of the rest of the elements of this set. The device 70 is thus, in this example, fixed in the upper part of the helmet 1, and precisely against the wind, that is to say turned towards the longitudinal direction of wind arrival.

Dans un premier cas d'exemple, et en ce qui concerne la commande du moteur 21M, si la valeur mesurée croít jusqu'à franchir le seuil, le dispositif 70 commande une rotation du moteur 21M dans le sens du rabattement de l'écran 10, 20 en position de fermeture. Le passage en retour de la position de fermeture à la position d'ouverture peut être commandé par rappel élastique, par exemple par un ou deux ressorts en spirale ou en hélice montés au niveau des articulations respectives 21. A la place ou en complément des ressorts ci-dessus, il peut être prévu que la gravité agisse, mais alors avec un écran 10 qui serait par exemple monté pivotant sur le casque 1 ou sur l'écran 20 selon le principe des figures 1 et 2, le moteur 21M étant par exemple alors situé au niveau du ressort 19R.In a first case example, and with regard to the motor control 21M, if the measured value increases up to crossing the threshold, the device 70 controls a rotation of the motor 21M in the direction of the folding of the screen 10, 20 in the closed position. The passage in return from the closed position to the position opening can be controlled by elastic return, by example by one or two springs in spiral or helix mounted at the respective joints 21. At the place or in addition to the springs above, it may be expected that gravity act but then with a screen 10 which would be for example mounted pivoting on the helmet 1 or on the screen 20 according to the principle of Figures 1 and 2, the motor 21M being for example then located at the level of spring 19R.

Inversement, dans un deuxième cas d'exemple, le dispositif 70 est prévu pour commander le passage de la position de fermeture à la position d'ouverture, lorsque la pression de vent descend au-dessous du seuil. L'écran 10, 20 doit rester sensible au vent, même en position d'ouverture, pour que le vent le rabatte, par commande mécanique directe, en position de fermeture lorsque le seuil est dépassé. L'écran 10, 20 constitue donc un capteur de pression du vent. Conversely, in a second example, the device 70 is provided to control the passage of the closing position to the open position, when the wind pressure drops below the threshold. Screen 10, 20 must remain sensitive to the wind, even in of opening, so that the wind folds it, by order direct mechanics, in the closed position when the threshold is exceeded. The screen 10, 20 therefore constitutes a sensor of wind pressure.

Dans ces premier et deuxième cas, le basculement dans un sens prédéterminé intervient lors du franchissement du seuil de référence du dispositif 70 selon le dit sens, alors que le rebasculement en sens opposé est lié à la sensibilité au vent de l'écran 10, 20 dans la position atteinte sur commande du dispositif 70, respectivement de fermeture et d'ouverture. La force de pression pour le rebasculement peut donc correspondre à un seuil de basculement mécanique de valeur différente de celle du seuil en mémoire dans le dispositif 70. De préférence, le seuil mécanique est supérieur au seuil du dispositif 70 afin de produire un effet d'hystérésis, évitant des oscillations de l'écran 10, 20.In these first and second cases, the a predetermined meaning occurs when crossing the reference threshold of the device 70 according to the said direction, while the reversal in the opposite direction is linked to the wind sensitivity of the screen 10, 20 in the position reached on command of the device 70, respectively closing and opening. The pressure force for the Reversal can therefore correspond to a threshold of mechanical tilting of different value than threshold in the device 70. Preferably, the mechanical threshold is greater than the threshold of the device 70 to produce a hysteresis effect, avoiding oscillations of the screen 10, 20.

Le comparateur 72 peut toutefois aussi fonctionner dans les deux sens, pour commander le rappel vers la position initiale, à l'opposé du sens prédéterminé ci-dessus.The comparator 72 can, however, also work in both directions, to control the recall to the initial position, opposite the predetermined direction above.

Le dispositif 70 peut être un élément purement mécanique, comportant par exemple une membrane 71 à déformation élastique, s'étendant dans un plan vertical transversal par rapport à la direction d'arrivée du vent pour présenter une surface transverse, apparente, ou profil maximal, donc constant, afin d'assurer une mesure précise en étant au mieux sensible à la pression. La membrane 71 commande le déplacement d'un élément de contact interrupteur (72), non représenté, (équivalent du comparateur 72) qui commande le moteur 21M lorsque la pression atteint un seuil de déformation de la membrane 71. L'état du contact (72) détermine le sens de la commande du moteur 21M ou bien il est prévu deux tels montages à membrane, avec des seuils différents pour commander le moteur 21M dans les deux sens respectifs, avec hystérésis. The device 70 may be a purely mechanical device, comprising for example a membrane 71 to elastic deformation, extending in a vertical plane transversal to the wind direction of arrival to present a transverse surface, apparent, or profile maximum, therefore constant, to ensure accurate measurement being at best sensitive to pressure. The membrane 71 controls the movement of a contact element switch (72), not shown, (equivalent of comparator 72) which controls the motor 21M when the pressure reaches a threshold of deformation of the membrane 71. The state of the contact (72) determines the direction of the control of the motor 21M or two such assemblies are provided for membrane, with different thresholds to control the 21M motor in both directions respectively, with hysteresis.

En variante de la membrane 71 ci-dessus, il peut être prévu un montage à palette rotative du genre de la palette 44. Le mouvement de la palette rotative (comme 44) peut être ralenti en la couplant à un produit visqueux, tel que glycérine, dont le frottement visqueux nécessite le travail d'une force. Ce produit visqueux présente ainsi une fonction d'intégration de la force de pression du vent, filtrant donc ses variations temporaires.As a variant of the membrane 71 above, it can be provided a rotary pallet assembly of the kind of pallet 44. The movement of the rotary vane (like 44) can slow down by coupling it to a viscous product, such as glycerin, whose viscous friction requires work of a force. This viscous product thus has a integration function of the wind pressure force, filtering its temporary variations.

En variante de la détection de (sur)pression, il peut être prévu, dans le même but, une détection de dépression dans un venturi, l'intensité de cette dépression représentant, elle aussi, la vitesse du vent relatif. En pareil cas, la membrane 71 ci-dessus ou équivalent présente encore, par un boítier la portant, un profil transverse maximal, s'opposant au passage du vent, même si la surface utile de l'élément capteur 71 est alors tournée vers l'arrière, c'est-à-dire selon la direction de départ du vent.As a variant of the (on) pressure detection, it can be provided, for the same purpose, a detection of depression in a venturi, the intensity of this depression representing, too, the relative wind speed. In in such a case, the membrane 71 above or equivalent present still, by a housing bearing, a transverse profile maximum, opposing the passage of the wind, even if the surface useful of the sensor element 71 is then turned towards the back, that is to say according to the departure direction of the wind.

Le moteur actionneur 21M est ici de type pas à pas, pour, en l'absence de commande, verrouiller l'écran 10, 20 dans la dernière position commandée, éventuellement intermédiaire comme expliqué ci-après.The actuator motor 21M is here of the step type, for, in the absence of a command, lock the screen 10, 20 in the last position ordered, eventually intermediate as explained below.

En variante, le dispositif 70 est de type électrique ou électronique, par exemple un circuit intégré 70 intégrant la membrane 71, sur laquelle est plaquée une piste d'encre conductrice constituant une résistance étalonnée de jauge de contrainte montée dans un pont de Wheatstone. La tension de déséquilibre du pont, représentant la pression du vent, est appliquée à une entrée du circuit comparateur 72, qui reçoit la valeur de seuil de pression sur une autre entrée, en provenance d'un élément mémoire. Le circuit comparateur 72 commande le moteur 21M selon le sens de l'inégalité de niveau entre ses deux entrées, selon les principes de commande exposés plus haut.In a variant, the device 70 is of the electric type or electronics, for example an integrated circuit 70 integrating the membrane 71, on which is plated a conductive ink track constituting a resistor calibrated strain gauge mounted in a bridge of Wheatstone. Bridge unbalance voltage, representing the wind pressure, is applied to a input of the comparator circuit 72, which receives the value of pressure threshold on another input, coming from a memory element. The comparator circuit 72 controls the 21M motor according to the sense of level inequality between its two inputs, according to the control principles exposed more above.

Un circuit intégrateur, en entrée ou en sortie du circuit comparateur 72, peut être prévu pour filtrer les fluctuations de pression.An integrating circuit, at the input or at the output of the comparator circuit 72, can be provided to filter the pressure fluctuations.

Le circuit comparateur 72 est un circuit intégré, à mémoire et microprocesseur, programmable par un utilisateur pour fixer plusieurs valeurs du seuil de pression, dont certaines correspondent à des positions intermédiaires d'ouverture de l'écran 10, qui, grâce au moteur pas à pas 21M, peut ainsi occuper une position entrouverte dans une plage de vitesses intermédiaires, par exemple de 20 à 30 km/heure.The comparator circuit 72 is an integrated circuit, memory and microprocessor, programmable by a user to set several values of the pressure threshold, some correspond to intermediate positions opening of the screen 10, which, thanks to the stepper motor 21M, can thus occupy a half-open position in a intermediate speed range, for example from 20 to 30 km / hour.

Claims (14)

Ensemble à écran de vision coupe-vent (10), comportant des moyens (19, 19R) de montage mobile de l'écran (10) sur un élément porteur (1, 20), agencé pour coopérer avec la tête d'un utilisateur, afin que l'écran (10) soit mobile entre une position fonctionnelle définissant un angle solide fonctionnel déterminé de vision (8), avec protection des yeux de l'utilisateur, et une position de repos, correspondant à un angle solide homologue de repos (7) inférieur à l'angle solide fonctionnel (8), sous la commande de moyens capteurs de pression de vent (10, 71), caractérisé par le fait que les moyens capteurs de pression de vent (10, 71) sont agencés pour commander le passage de l'une, prédéterminée, des dites positions à l'autre en restant opposés au vent.Windscreen vision screen assembly (10), comprising means (19, 19R) movably mounting the screen (10) on a carrier member (1, 20), arranged to cooperate with a user's head , so that the screen (10) is movable between a functional position defining a determined functional solid vision angle (8), with protection of the eyes of the user, and a rest position, corresponding to a solid angle of repose (7) less than the solid functional angle (8), under the control of wind pressure sensor means (10, 71), characterized in that the wind pressure sensor means (10, 71) are arranged to to control the passage of the one, predetermined, said positions to the other being opposed to the wind. Ensemble selon la revendication 1, dans lequel les moyens de montage (19, 19R) sont agencés pour que la force de gravité s'exerce sur l'écran (10) pour lui appliquer une force une force de rappel vers la position de repos.An assembly according to claim 1 wherein the mounting means (19, 19R) are arranged so that the force of gravity is exerted on the screen (10) to apply a forces a restoring force towards the rest position. Ensemble selon l'une des revendications 1 et 2, dans lequel les moyens de montage (19, 19R, 20) comportent un écran périphérique (20) d'adaptation du montage de l'écran (10) sur un casque (1).Assembly according to one of claims 1 and 2, wherein the mounting means (19, 19R, 20) comprises a peripheral screen (20) for adapting the mounting of the screen (10) on a helmet (1). Ensemble selon l'une des revendications 1 à 3, dans lequel les moyens de montage (19) sont disposés au niveau d'un bord supérieur (14) d'une partie antérieure (10A) de l'écran (10) se prolongeant par deux parties latérales postérieures (10L), de façon à suspendre l'écran (10) de façon articulée pour qu'il présente, en position fonctionnelle, un centre de gravité (G) à l'écart d'un plan vertical (19V) contenant un axe de rotation (19A) des moyens de montage (19), afin que l'écran (10) exerce, sur l'ensemble à écran, un couple de basculement vers la position de repos.Assembly according to one of Claims 1 to 3, in which the mounting means (19) are arranged at the level an upper edge (14) of an anterior part (10A) of the screen (10) extending by two lateral parts posterior (10L), so as to suspend the screen (10) of articulated way for him to present, in position functional, a center of gravity (G) away from a plane vertical axis (19V) containing an axis of rotation (19A) of mounting means (19), so that the screen (10) exerts the screen assembly, a tilting torque towards the rest position. Ensemble selon l'une des revendications 1 à 3, dans lequel les moyens de montage comportent des moyens d'articulation (21) disposés de façon à ce que l'écran (10) présente un centre de gravité (G) mobile situé en avant des moyens d'articulation (21), par rapport à une direction d'arrivée du vent, afin que la gravité rappelle l'écran (10) vers la position de repos, par basculement vers le bas, à l'encontre de la pression du vent tendant à rappeler l'écran (10), par basculement, vers le haut.Assembly according to one of Claims 1 to 3, in which the mounting means comprise means hinge (21) arranged so that the screen (10) has a mobile center of gravity (G) located in front of articulation means (21), with respect to a direction arrival of the wind, so that gravity reminds the screen (10) to the rest position, by tilting towards the low, against the wind pressure tending to recall the screen (10) is tilted upwards. Ensemble selon l'une des revendications 4 et 5, dans lequel les moyens de montage comportent des moyens de translation de l'écran (10) agencés pour que l'écran (10) présente un centre de gravité (G) mobile, rappelé par gravité vers une position basse, correspondant à la position de repos à l'écran (10), dans laquelle il reste sensible au vent pour être rappelé vers la position de fermeture par remontée du centre de gravité (G) jusqu'à une position haute, sous l'action du vent.Assembly according to one of claims 4 and 5, in which the mounting means comprise means for translation of the screen (10) arranged so that the screen (10) has a mobile center of gravity (G), recalled by gravity to a low position, corresponding to the rest position on the screen (10), in which there remains sensitive to the wind to be recalled to the position of closing by raising the center of gravity (G) to a high position, under the action of the wind. Ensemble selon l'une des revendications 1 à 6, dans lequel les moyens de montage de l'écran (10) sont agencés pour permettre un déplacement latéral de l'écran (10), lors du passage d'une des dites positions à l'autre.Assembly according to one of Claims 1 to 6, in which means for mounting the screen (10) are arranged to allow a lateral displacement of the screen (10), when from the passage of one of these positions to the other. Ensemble selon l'une des revendications 1 à 7, agencé pour coopérer avec des moyens de verrouillage (17, 18, 38 ou 42, 43, 44) agencés pour être actionnés par le vent afin de solidariser l'élément porteur (1, 20) avec l'écran (10) en position de fermeture.Assembly according to one of Claims 1 to 7, arranged to cooperate with locking means (17, 18, 38 or 42, 43, 44) arranged to be actuated by the wind to secure the carrier element (1, 20) with the screen (10) in the closed position. Ensemble selon la revendication 8, dans lequel les moyens de verrouillage présentent une zone de surface dégagée (17, 37), s'étendant sensiblement orthogonalement par rapport à un axe (19A) de guidage des moyens de montage (19), la surface (17, 37) présentant un relief à extension axiale (18, 38) disposé pour, lors du passage à la position de fermeture, venir en regard d'un relief (38, 18) de forme complémentaire de l'élément porteur (1, 20), et les moyens d'articulation (19) sont agencés pour présenter un jeu permettant un déplacement axial de mise en prise et verrouillage des deux reliefs en regard (18, 38) sous l'effet d'un vent latéral.An assembly according to claim 8 wherein the locking means have a surface area unobstructed (17, 37), extending substantially orthogonally relative to an axis (19A) for guiding the mounting means (19), the surface (17, 37) having an extensional extension axial axis (18, 38) arranged for, when moving to the position closing, coming opposite a relief (38, 18) of form complementary to the carrier element (1, 20), and the means articulation members (19) are arranged to present a game permitting axial displacement of engagement and locking the two reliefs opposite (18, 38) under the effect of a side wind. Ensemble selon l'une des revendications 8 et 9, dans lequel les moyens de verrouillage comportent un doigt mobile (42, 43), associé à une palette rotative (44) d'actionnement par le vent, agencé pour solidariser l'écran à l'élément porteur (1, 20) sous l'effet du vent.Assembly according to one of claims 8 and 9, in which the locking means comprise a finger mobile (42, 43) associated with a rotary pallet (44) wind actuated, arranged to secure the screen to the carrier element (1, 20) under the effect of the wind. Ensemble selon la revendication 10, comportant des moyens de carénage (46) pour canaliser le vent vers la palette (44).An assembly according to claim 10 including fairing means (46) for channeling the wind towards the pallet (44). Ensemble selon l'une des revendications 1 à 11, dans lequel il est prévu des moyens capteurs (71) de mesure de la pression du vent, associés à des moyens (72) de comparaison de la pression mesurée à au moins une valeur déterminée de seuil de pression, prévus pour commander des moyens actionneurs (21M) agencés pour faire passer l'écran (10, 20), de ladite position prédéterminée à l'autre, lorsque le seuil est franchi dans un sens déterminé.Assembly according to one of Claims 1 to 11, in which measuring means (71) are provided wind pressure, associated with means (72) of comparing the measured pressure with at least one value determined pressure threshold, intended to control actuator means (21M) arranged to pass the screen (10, 20) from said predetermined position to the other, when the threshold is crossed in a certain direction. Ensemble selon la revendication 12, dans lequel les moyens de comparaison (72) comportent deux seuils, associés aux deux positions respectives, et sont agencés pour commander avec hystérésis les moyens actionneurs (21M), dans le sens déterminé et en sens opposé. An assembly according to claim 12, wherein the comparison means (72) comprise two thresholds, associated with the two respective positions, and are arranged to control with hysteresis the actuator means (21M), in the determined direction and in the opposite direction. Ensemble selon l'une des revendications 12 et 13, dans lequel les moyens de comparaison (72) sont un circuit intégré programmable par un utilisateur pour fixer plusieurs valeurs du seuil de pression, dont certaines correspondent à des positions intermédiaires d'ouverture de l'écran (10).Assembly according to one of Claims 12 and 13, wherein the comparison means (72) is a circuit built-in programmable by a user to fix several pressure threshold values, some of which correspond to intermediate opening positions of the screen (10).
EP02291896A 2001-08-10 2002-07-26 Visor Expired - Lifetime EP1283017B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0110712A FR2828385A1 (en) 2001-08-10 2001-08-10 Visor for crash helmet has wind pressure sensors to automatically move visor to rest position dependent on speed
FR0110712 2001-11-07
FR0114371 2001-11-07
FR0114371A FR2828386B1 (en) 2001-08-10 2001-11-07 WINDSCREEN VISION SCREEN

Publications (2)

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EP1283017A1 true EP1283017A1 (en) 2003-02-12
EP1283017B1 EP1283017B1 (en) 2005-11-30

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EP02291896A Expired - Lifetime EP1283017B1 (en) 2001-08-10 2002-07-26 Visor

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US (1) US6877169B2 (en)
EP (1) EP1283017B1 (en)
JP (1) JP2003055830A (en)
DE (1) DE60207646T2 (en)
ES (1) ES2253499T3 (en)
FR (1) FR2828386B1 (en)

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FR3057442A1 (en) * 2016-10-18 2018-04-20 Jonathan Halfon INTELLIGENT HELMET

Also Published As

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US20030028953A1 (en) 2003-02-13
FR2828386A1 (en) 2003-02-14
DE60207646T2 (en) 2006-07-27
DE60207646D1 (en) 2006-01-05
EP1283017B1 (en) 2005-11-30
US6877169B2 (en) 2005-04-12
ES2253499T3 (en) 2006-06-01
FR2828386B1 (en) 2004-06-11
JP2003055830A (en) 2003-02-26

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