EP0334773A1 - Schutzhelm ohne Kinnriemen und Vorrichtung zum Dämpfen der Bewegungen der Befestigungsvorrichtung dieses Helmes - Google Patents

Schutzhelm ohne Kinnriemen und Vorrichtung zum Dämpfen der Bewegungen der Befestigungsvorrichtung dieses Helmes Download PDF

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Publication number
EP0334773A1
EP0334773A1 EP89420082A EP89420082A EP0334773A1 EP 0334773 A1 EP0334773 A1 EP 0334773A1 EP 89420082 A EP89420082 A EP 89420082A EP 89420082 A EP89420082 A EP 89420082A EP 0334773 A1 EP0334773 A1 EP 0334773A1
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EP
European Patent Office
Prior art keywords
skirt
shell
protective helmet
helmet according
helmet
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Withdrawn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
EP89420082A
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English (en)
French (fr)
Inventor
François CHAISE
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.)
CHAISE, FRANCOIS
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0334773A1 publication Critical patent/EP0334773A1/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Withdrawn legal-status Critical Current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
    • A42B3/32—Collapsible helmets; Helmets made of separable parts ; Helmets with movable parts, e.g. adjustable
    • A42B3/326—Helmets with movable or separable chin or jaw guard

Definitions

  • the present invention relates to a protective helmet equipped with a retention system replacing the traditional chin strap by at least one rigid half-skirt extending, in the closed position, the base of the shell down and towards the inside of the helmet and capable to release the opening thereof by a rocking movement moving away from the shell all the points of the half-skirt by making it describe a curve in space.
  • a system for damping the movements of the half-skirt is also part of the present invention and can be adapted to any other retention system of a helmet comprising at least one rigid part movable relative to the shell.
  • protective helmets benefit from retention systems which can be classified into four main groups: -protective helmets with chin strap, -protective helmets equipped with a retention system by flexible collar or flexible skirt (European patent n ° 82 420118), -protective helmets fitted with a retention system comprising at least one rigid half-skirt linked to the shell along a simple articulation axis (FR patents 77- 33639, GB.2119229 A, FR. 81-21509, FR. 83-04225, FR.
  • protective helmets equipped with a retention system comprising at least one sliding rigid half-skirt releasing the opening of the helmet in a movement in translation relative to the shell, towards the outside thereof
  • a retention system comprising at least one sliding rigid half-skirt releasing the opening of the helmet in a movement in translation relative to the shell, towards the outside thereof
  • helmets of the "chin strap” type are well known: small surface in contact with the user, inconvenient use, possibility of pivoting the helmet around the head of the user, poorly controlled ventilation inside the helmet ...
  • the retention systems with at least one rigid half-skirt linked to the shell along an axis of rotation have the drawback of a large amplitude opening movement at the free ends of each half-skirt, which free ends, poorly guided and ends of a large overhang give the helmet in the open position a "fragile" appearance, detrimental to the image of the product.
  • such devices generally include a locking system between the half-skirt and the shell at each end of the half-skirt, therefore at two opposite points of the shell, which requires the use of both hands of the user to cause the helmet to open.
  • the device according to the invention proposes to present a more modern embodiment of a retention system with at least one rigid half-skirt, distinguished from the systems previously described by the nature of its movements, and its type of connection to the shell.
  • the half-skirt is linked to the shell exclusively by means of a system of at least two links. Therefore, during the opening movements, all the points of the half-skirt - including those through which pass the articulation axes of the rods - move away from the shell by describing a curve in space.
  • the amplitude of said movements is determined and limited by the length of the rods, and, depending on the variant of embodiment chosen, the half-skirt in the open position may no longer have the fragile appearance characterizing the other systems, each of its ends continuing to have an -indirect- connection with the hull via each of the rods.
  • such a system makes it possible to envisage the height adjustment of the half-skirt in the closed position, thereby improving the adaptation of the helmet to the morphology of each user.
  • the locking system is also simplified, since, although effective at several points of each half-skirt, its operation can be controlled by one hand, at a single point .
  • each of the half-skirts is linked to the base of the shell by a system of links, themselves each linked by one of their ends - along an axis of rotation - to the shell, and by their other end - along an axis of rotation - to the half-skirt.
  • At least one of these links is located in the central zone of the half-skirt, each of the zones close to the ends of this same half-skirt being linked to the base of the shell by a system at least one other link.
  • the distance separating the two articulation axes of each link must be sufficient to give the said link a length such that the possible clearance of the half-skirt -determined by this length- is sufficient to clear the opening of the base of the shell and allow the introduction of the user's head inside the helmet or its removal.
  • each of the ends of each half-skirt extends beyond the "end" links, according to a plane passing outside or inside that containing the said links - or between these rods if these are mounted along the same axes, in groups of two on either side of the walls of the shell and the half-skirt.
  • These extensions arranged so as to each also be a bolt part, become male parts being introduced into housings formed in the thickness of the hull - or between the hull and a plywood - and arranged so as to be also each a cooperating lock part. This so that the connection, at least in the vertical direction, is ensured between the ends of the half-skirt and the shell.
  • each lock proper consists essentially of the combination of a projecting part linked elastically to one of the elements to be locked and of a cooperating cutout of the other element to be locked.
  • a lock at a central link is also provided. This locking can take place between the shell and the half-skirt, or between the link and the shell or the half-skirt. This connection is designed to withstand both horizontal and vertical forces.
  • At least one of the rods is slidably mounted relative to the shell.
  • this link is vertical and linked to the shell and the half skirt along horizontal axes, when the helmet is in the closed position, the upper edge of said link is a few centimeters above from the bottom edge of the hull.
  • a locking device prevents it from sliding down.
  • the user pulls the half-skirt down, causing in its movement the link which, sliding along the shell relative to which it is guided sees its upper edge -equipped with a part of an articulation device - arriving at the lower edge of the shell, which, equipped with articulation means cooperating with those characterizing the upper edge of the link, sees these means become articulation system between the link and the base of the hull.
  • the user can then pull the half-skirt towards the outside of the helmet thus releasing each end of said half-skirt engaged in a cooperating female part of the shell.
  • the reverse movement makes it possible to close the helmet.
  • the closed position of the helmet corresponds to a choice between several positions of the half-skirt, which are determined by the user when he brings the half-skirt in abutment against the base of his face and in particular of his chin -case of an anterior half-skirt-.
  • the sliding link is relative to the half-skirt.
  • the cooperating means for forming a hinge system are then carried respectively by the lower edge of the link and the upper edge of the half-skirt.
  • the rod is slidably mounted on the one hand with respect to the shell with regard to its upper part and on the other hand with respect to the half-skirt with regard to its lower part.
  • the link is sliding relative to itself, in which case, said link is formed of at least two telescopic elements.
  • the latch part carried by each end of the half-skirt is a hook cooperating with a fixed axis secured to the shell.
  • each half-skirt which may come into contact with the base of the face or the neck of the user, are provided with a protective and comfort padding.
  • the movements of the half-skirt instead of developing below the level of the base of the shell, can do so in the plane containing that of the base of the shell or in a plane roughly parallel to this one.
  • a system of two links or group of links per half-skirt is generally sufficient.
  • the articulation axes of the links are then approximately vertical axes, in a plane approximately tangent to the surface of the hull.
  • a helmet according to the invention can be equipped with several half-skirts linked to the shell by connecting rods, as well as with a single half-skirt according to the invention occupying any of the sectors of the base of the shell and cooperating with a flexible or rigid extension of the shell or of the neck cushion, or with any other type of retention system making, having made, or having to be the subject of other patents and occupying another angular sector of the base of the same helmet.
  • the helmet according to the invention - as well as any other helmet equipped with a retention system comprising at least one rigid part movable relative to the shell - can be improved by a device aimed at improving its comfort of use. It is in this case a device for damping the movements of opening and / or closing of the retention system.
  • this device consists of at least one small telescopic damper, connected by one end to the hull - or to an intermediate piece integral with the hull - and by its other end to an element of the mobile retention system by compared to the hull.
  • the damping of the movements of the half-skirt is due to the action of a system of at least two opposing elastic means.
  • the damping system is a friction device.
  • this device consists of a sufficiently substantial clamping between the hull - or an intermediate part secured to the hull - and a part of the retention system, movable relative to the hull. This support takes place at at least a portion of the contacting surfaces, so that the friction forces arising therefrom are capable of causing the movements of the moving part to be damped relative to the shell. Such friction can take place between two dry surfaces as well as lubricated or moistened with a high viscosity liquid.
  • the shell - or an intermediate part integral with the shell - has a bore into which is introduced the cylindrical part of a part also comprising a small toothed wheel. Said toothed wheel cooperating with a toothed sector, or a rack, of a part of the retention system movable relative to the shell.
  • the rotation of the toothed wheel being braked either mechanically - by at least one shoe maintaining an elastic support between the bore of the shell and the cylindrical part of the part comprising the toothed wheel, by a tight adjustment of the bore around the said cylindrical part ...- either by the action of a very high viscosity liquid introduced into the bore of the shell and forming a viscous film between said bore and the cylindrical part of the part comprising the toothed wheel.
  • the retention part movable relative to the shell, which carries the toothed wheel, and the shell - or an intermediate part integral with the shell - which carries the toothed sector or the rack.
  • a retention system comprising at least one movable part along an axis of rotation relative to the shell, it is this axis itself, of a deliberately relatively large diameter which turns in a bore coated with a very high viscosity fluid or comprising a mechanical braking system.
  • the helmet illustrated in FIGS. 1 and 4 is equipped with a single half-skirt (1) according to the invention occupying the front part of the base of the shell (4) and cooperating with a neck cushion (CN) occupying the rear part. from the base of this same shell (4).
  • the rigid half-skirt (1) is linked to the shell by means of a central link (2) and two lateral links (3).
  • the central link (2) is linked to the shell of the helmet (4) along an axis of rotation (x) by a hinge (5) fixed to the shell (4) by ultrasonic welding points.
  • the lower edge of the link (2) is linked to the upper edge of a notched area of the half-skirt (1), along an axis of rotation (y), by means of a hinge (6).
  • the lateral links (3) are each linked along an axis of rotation (x ′) to the lower edge of the shell (4) and along an axis of rotation (y ′) to the half-skirt (1).
  • the axes (x ′) and (y ′) must be parallel.
  • the zones of the half-skirt and of the shell on which the lateral links are articulated form bosses (7).
  • each of the lateral links (3) is doubled by a small shock absorber (8) articulated on the one hand to the shell along an axis (x ⁇ ) and on the other hand to the link (3) according to an axis (y ⁇ ).
  • shock absorbers (8) optional, have the effect of damping the opening and closing movements and giving the helmet better comfort of use. They contain a spring (r) tending to cause the automatic opening of the helmet as soon as the unlocking has been actuated.
  • This spring (r) is placed in the compartment (A) itself filled with a viscous liquid which can pass, during the opening movements, into the compartment (B) through the thin orifices (o) made through the washer attached to the movable piston (P).
  • a seal is provided between the cover (C) and the piston (P).
  • the extensions (9) of the half-skirt (1) are introduced between the shell (4) and the plywood (10), the inclined plane (11) of the projecting part (12) sliding against the edge of the shell allows it to retract until, arriving in coincidence with the cooperating cutout (13), practiced through the shell (4), it can return to its place, thereby causing the helmet to lock in the closed position.
  • the link (2) coming to bear against the external surface of a recess in the shell (4), it is possible to provide a third lock consisting for example of a part (a) linked to the shell but free to rotate relative to it, cooperating with a cutout (b) of the link.
  • FIGS. 9 to 15 The variant embodiment of a helmet according to the invention illustrated in FIGS. 9 to 15 is distinguished by the fact that the opening and closing movements pass through an intermediate phase represented in FIG. 10, in which the central part of the half-skirt (14) is pulled down.
  • the central link (15) is slidably mounted between the internal surface of the shell (16) and a metal counterplate (17), which is fixed against the shell by means of seven ultrasonic welding points (18).
  • the upper edge of the link (15) is equipped with a material axis (19), the ends of which are guided in slots (20) formed through the side walls of the plywood (17).
  • the projecting part (21) of the link cooperates with a cutout (22) made through the shell, thus allowing the locking in translation of the link relative to the shell and thereby locking the helmet.
  • the user To unlock, the user must push the lock (21) towards the inside of the helmet and pull the half-skirt down until the axis (19) merges with the axis (w ) by pressing against the lower edge of the lights (20). This movement has the effect of rotating the half-skirt around the axis (u), thus allowing each hook (25), extending each of the ends of said half-skirt engaged between the shell (16) and the plywoods. (26), to move away from the axis (27), which axis is a spacer between the shell (16) and the plywood (26).
  • FIGS. 9 to 15 is also equipped with a device for damping the movements of the half-skirt (14).
  • the relatively significant functional clearance existing between the bore (33) and the cylinder (32) is filled with a liquid with very high viscosity forming a viscous film (34) between these two parts.
  • this film creates resistance to the rotation of the part (32), therefore of the toothed wheel (31), and therefore, it acts as a brake damping the movements of the link (30) -so of the half-skirt (14) - relative to the shell (16).
  • the lateral link on the right side - not shown - is on the contrary associated with an elastic means of known type - spring ... - tending to drive and maintain the half-skirt (14) in the open position.
  • This elastic force being just sufficient to overcome the resistance of the damping system (30′-31-34), as soon as the unlocking has been actuated, the half-skirt (14) moves to the open position in a gentle movement and regular, relatively slow.
  • the links (3) (30) are articulated against the external face of the wall of the shell and of the half-skirt. They could just as easily be placed against the internal surface of these same walls, then becoming invisible when the helmet is in the closed position, or be mounted in groups of two, along the same axes, on either side of the walls of the shell and half skirt.
  • the helmet according to the invention can find its application in all uses of a protective helmet and more particularly of a protective helmet for motorcyclists.
EP89420082A 1988-03-03 1989-03-02 Schutzhelm ohne Kinnriemen und Vorrichtung zum Dämpfen der Bewegungen der Befestigungsvorrichtung dieses Helmes Withdrawn EP0334773A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8802984A FR2627958B1 (fr) 1988-03-03 1988-03-03 Casque de protection sans jugulaire et systeme d'amortissement des mouvements du dispositif d'assujettissement des casques sans jugulaire
FR8802984 1988-03-03

Publications (1)

Publication Number Publication Date
EP0334773A1 true EP0334773A1 (de) 1989-09-27

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EP89420082A Withdrawn EP0334773A1 (de) 1988-03-03 1989-03-02 Schutzhelm ohne Kinnriemen und Vorrichtung zum Dämpfen der Bewegungen der Befestigungsvorrichtung dieses Helmes

Country Status (2)

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EP (1) EP0334773A1 (de)
FR (1) FR2627958B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717046A1 (fr) * 1994-03-08 1995-09-15 Suif Fernand Albert Dispositif de guidage d'une visière de protection escamotée dans un casque.
EP0797935A1 (de) * 1996-03-18 1997-10-01 E.D.C. Sa Integralhelm für Motorradfahrer oder dergleichen mit Vorrichtung zum Öffnen/Schliessen des Kinnbügels
KR20000076911A (ko) * 2000-03-18 2000-12-26 박수안 턱부를 개폐가능하게 한 풀 훼이스 헬멧
EP1312274A1 (de) * 2001-11-20 2003-05-21 Uvex Sports GmbH & Co. KG Motorrad-Integralhelm
US6983488B2 (en) * 2004-04-22 2006-01-10 Foote-Mats, Inc. Equestrian helmet with faceguard

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2331287B1 (es) * 2008-06-26 2010-10-01 World Champion Brands, S.L Casco para la proteccion de la cabeza de un motorista.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525441A1 (fr) * 1982-04-26 1983-10-28 Hoffmann Hanspeter Casque de protection avec collier de fixation
FR2595920A1 (fr) * 1986-03-18 1987-09-25 Gpa Int Casque integral a dispositif de retention comprenant une demi-jupe d'assujettissement verrouillable sur la coque et a mouvement pendulaire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525441A1 (fr) * 1982-04-26 1983-10-28 Hoffmann Hanspeter Casque de protection avec collier de fixation
FR2595920A1 (fr) * 1986-03-18 1987-09-25 Gpa Int Casque integral a dispositif de retention comprenant une demi-jupe d'assujettissement verrouillable sur la coque et a mouvement pendulaire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717046A1 (fr) * 1994-03-08 1995-09-15 Suif Fernand Albert Dispositif de guidage d'une visière de protection escamotée dans un casque.
EP0797935A1 (de) * 1996-03-18 1997-10-01 E.D.C. Sa Integralhelm für Motorradfahrer oder dergleichen mit Vorrichtung zum Öffnen/Schliessen des Kinnbügels
KR20000076911A (ko) * 2000-03-18 2000-12-26 박수안 턱부를 개폐가능하게 한 풀 훼이스 헬멧
EP1312274A1 (de) * 2001-11-20 2003-05-21 Uvex Sports GmbH & Co. KG Motorrad-Integralhelm
US6983488B2 (en) * 2004-04-22 2006-01-10 Foote-Mats, Inc. Equestrian helmet with faceguard

Also Published As

Publication number Publication date
FR2627958A1 (fr) 1989-09-08
FR2627958B1 (fr) 1990-08-10

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