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EP0205545A1 - Hinge device for a retractable face guard on a safety helmet - Google Patents

Hinge device for a retractable face guard on a safety helmet

Info

Publication number
EP0205545A1
EP0205545A1 EP19860900339 EP86900339A EP0205545A1 EP 0205545 A1 EP0205545 A1 EP 0205545A1 EP 19860900339 EP19860900339 EP 19860900339 EP 86900339 A EP86900339 A EP 86900339A EP 0205545 A1 EP0205545 A1 EP 0205545A1
Authority
EP
European Patent Office
Prior art keywords
holder
hinge device
guide portion
latch member
attachment
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Withdrawn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
EP19860900339
Other languages
German (de)
French (fr)
Inventor
Bo Gunnar LÖNNSTEDT
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
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 EP0205545A1 publication Critical patent/EP0205545A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A42B3/225—Visors with full face protection, e.g. for industrial safety applications

Definitions

  • the present invention relates to a hinge device for a retractable face guard on a safety helmet, the device having an attachment associated with the guard, and including a substantially flat guide portion, and a holder detachably mounted on the helmet, with guide means for the guide portion, allowing the attachment to be pivotable in the holder about an axis at right angles to the guide portion, there also being a latching means for latching the attachment in different angular positions relative the holder.
  • the hinge means shall here ensure that it is easy to move the guard between these positions, while also ensuring that it is well fixed in both operative and inoperative positions.
  • the device must be robust and capable of withstanding use in difficult conditions, as well as not being implemented such that there is a risk of its getting caught in different obstructions when in use.
  • friction washers and a helical spring are used to fix the guard in different angular positions by friction.
  • One of the disadvantages of this design is that the hinge device protrudes prominently from the helmet in a transverse direction, with accompanying risk of accidents.
  • the object of the invention is to achieve a hinge device, improved in relation to known such devices.
  • a spring biassed latch member in the holder together with edge surfaces on the guide portion form the latching means, and by the latch member being adapted to subject the guide portion to a force substantially at right angles to an edge surface thereon, and essentially upwards in the holder guide means.
  • the hinge device may thus be made such as to require small space, while enabling distinct positions for the guard and good resistance to wear.
  • edge surfaces are disposed such that a larger force is necessary to turn the guard from its operative position to its inoperative position than vice versa.
  • the risk of retracting the guard unintentionally is thus reduced, while it can readily and quickly be lowered into its operative position.
  • Fig 1 is a perspective view of a safety helmet on which a face guard has been mounted with the aid of n inventive hinge device;
  • Fig 2 is a view from above of the hinge device in Fig 1;
  • Fig 3 is a section along the line III-III in Fig 2;
  • Fig 4 is a perspective view of a further embodiment of the invention.
  • Fig 5 is a section corresponding to the one in Fig 3 of another embodiment.
  • a face guard 1 is pivotably mounted on a safety helmet 3 with the aid of a hinge device 2, and can thus be retracted from the operative position illustrated to an unillustrated inoperative position.
  • an attachment 4 associated with the guard 1, as well as a holder 5 removably mounted on the helmet 3.
  • the holder is mounted on the helmet via an attachment member 6, in which it may be displaced longitudinally between different latching positions.
  • the attachment member 6 may of course be implemented in many different ways according to the need.
  • the attachment 4 has a substantially flat guide portion 7, accommodated in guide means 8 in the holder 5.
  • the attachment 4 is pivotable in the holder 5 about a pin 9, which has its axis at right angles to the guide portion 7.
  • a latching means 10 enables latching the attachment 4 in different angular positions in relation to the holder 5 (see Fig 3).
  • Included in the latching means are edge surfaces 11,12 on the attachment 4 and a latch member 13 disposed in the holder 5 for spring biassed coaction with the edge surfaces.
  • the latch member 13 is here a spring plate fixed at one end in the holder 5, with its free end directed forwards.
  • the latch member is suitably made of metal, while the rest of the holder 5 may suitably be made from such as plastics.
  • the attachment 4 may also be suitably made from plastics.
  • the holder 5 itself may be made in one piece, but it is of course possible, with retained function, to part it, e.g. along the section line illustrated in Fig 2, to facilitate fitting the latch member 13. The different parts of the holder may then be joined together in a suitable way, e.g. by gluing.
  • the latch member is made integral with the holder 5, and has the further task of maintaining the stud 15 (of which only one end is illustrated) in substantially semi-circular bearing surfaces 16 (of which only one is illustrated) on the holder.
  • the bearing surfaces open towards the latch member 13, thus securely retaining the attachment 4 in the holder 5, but even so it can be readily latched when necessary.
  • a greater force is required to retract the guard to its inoperative position than to lower it into the operative position.
  • the holder is advantageously made entirely from plastics.
  • the corner 14 may optionally be rounded to a greater or lesser extent for lessening the turning force necessary when a strong latch member 13 is used.
  • the guide portion 7 on the attachment 4 may be formed very simply by having the latch member 13 coact with the underside of the attachment 4 and by having its free end facing forwards.
  • the latch member 13 comprises a spring biassed metal plate which is accommodated at two of its opposing ends in the holder 5 such as to allow for its flexural movement.

Landscapes

  • Helmets And Other Head Coverings (AREA)

Abstract

Une charnière pour la visière escamotable (1) d'un casque de protection (3) possède une fixation (4) solidaire de la visière, un support (5) que l'on peut monter sur le casque pour l'attacher, ainsi qu'un organe de verrouillage de la fixation dans différentes positions angulaires par rapport au support. Un verrou sollicité par un ressort dans le support forme l'organe de verrouillage, en combinaison avec les surfaces latérales de la fixation.A hinge for the retractable visor (1) of a protective helmet (3) has a fixing (4) integral with the visor, a support (5) which can be mounted on the helmet to attach it, as well as 'A locking member of the fixing in different angular positions relative to the support. A lock biased by a spring in the support forms the locking member, in combination with the lateral surfaces of the fixing.

Description

Hinge device for a retractable face guard on a safety helmet
The present invention relates to a hinge device for a retractable face guard on a safety helmet, the device having an attachment associated with the guard, and including a substantially flat guide portion, and a holder detachably mounted on the helmet, with guide means for the guide portion, allowing the attachment to be pivotable in the holder about an axis at right angles to the guide portion, there also being a latching means for latching the attachment in different angular positions relative the holder.
For the purpose of protection it has become more and more usual to arrange face guards on safety helmets. In such cases it is desirable to enable retraction of the face guard from a downward, operative position to an upward inoperative position. The hinge means shall here ensure that it is easy to move the guard between these positions, while also ensuring that it is well fixed in both operative and inoperative positions. Furthermore, the device must be robust and capable of withstanding use in difficult conditions, as well as not being implemented such that there is a risk of its getting caught in different obstructions when in use.
Several different types of hinge device have been proposed and are on the market, although none of them offers complete solutions to the problems mentioned above. In a type of hinge device mentioned in the introduction, according to the Swedish Patent 7802554-1, the attachment on the guard is clamped between the helmet and a holder mounted thereon. The holder is formed to clamp the attachment in different angular positions, but the stresses on the hinge will be large during pivoting, resulting in considerable wear, which in turn results in that the fixing positions are no longer distinct after some time.
In another implementation, according to the Swedish published specification 3^1 574, friction washers and a helical spring are used to fix the guard in different angular positions by friction. One of the disadvantages of this design is that the hinge device protrudes prominently from the helmet in a transverse direction, with accompanying risk of accidents. The object of the invention is to achieve a hinge device, improved in relation to known such devices.
This is achieved in accordance with the invention in that a spring biassed latch member in the holder together with edge surfaces on the guide portion form the latching means, and by the latch member being adapted to subject the guide portion to a force substantially at right angles to an edge surface thereon, and essentially upwards in the holder guide means. The hinge device may thus be made such as to require small space, while enabling distinct positions for the guard and good resistance to wear.
It is particularly advantageous here if the edge surfaces are disposed such that a larger force is necessary to turn the guard from its operative position to its inoperative position than vice versa. The risk of retracting the guard unintentionally is thus reduced, while it can readily and quickly be lowered into its operative position. The invention will now be described in detail with the aid of embodiments illustrated on the accompanying drawing, where:
Fig 1 is a perspective view of a safety helmet on which a face guard has been mounted with the aid of n inventive hinge device;
Fig 2 is a view from above of the hinge device in Fig 1; Fig 3 is a section along the line III-III in Fig 2;
Fig 4 is a perspective view of a further embodiment of the invention; and Fig 5 is a section corresponding to the one in Fig 3 of another embodiment.
According to Fig 1 a face guard 1 is pivotably mounted on a safety helmet 3 with the aid of a hinge device 2, and can thus be retracted from the operative position illustrated to an unillustrated inoperative position. In the hinge device 2 is included an attachment 4 associated with the guard 1, as well as a holder 5 removably mounted on the helmet 3. In this case the holder is mounted on the helmet via an attachment member 6, in which it may be displaced longitudinally between different latching positions. The attachment member 6 may of course be implemented in many different ways according to the need. As will be seen from Figs 2 and 3, the attachment 4 has a substantially flat guide portion 7, accommodated in guide means 8 in the holder 5. The attachment 4 is pivotable in the holder 5 about a pin 9, which has its axis at right angles to the guide portion 7. A latching means 10 enables latching the attachment 4 in different angular positions in relation to the holder 5 (see Fig 3). Included in the latching means are edge surfaces 11,12 on the attachment 4 and a latch member 13 disposed in the holder 5 for spring biassed coaction with the edge surfaces. The latch member 13 is here a spring plate fixed at one end in the holder 5, with its free end directed forwards.
When the attachment 4 is turned from the position depicted by full lines in Fig 3, the corner 14 between edge surfaces 11,12 will be nearer the fixed end of the latch member 13 than when the attachment 4 is turned from the inoperative position, denoted by chain dotted lines, back to the operative position. This means that a greater force will be required to pivot the guard 1 from the operative to the inoperative position than from the inoperative to the operative position.
The latch member is suitably made of metal, while the rest of the holder 5 may suitably be made from such as plastics. The attachment 4 may also be suitably made from plastics. The holder 5 itself may be made in one piece, but it is of course possible, with retained function, to part it, e.g. along the section line illustrated in Fig 2, to facilitate fitting the latch member 13. The different parts of the holder may then be joined together in a suitable way, e.g. by gluing.
In the embodiment illustrated in Fig 4, the latch member is made integral with the holder 5, and has the further task of maintaining the stud 15 (of which only one end is illustrated) in substantially semi-circular bearing surfaces 16 (of which only one is illustrated) on the holder. The bearing surfaces open towards the latch member 13, thus securely retaining the attachment 4 in the holder 5, but even so it can be readily latched when necessary. As with the previous embodiment, a greater force is required to retract the guard to its inoperative position than to lower it into the operative position. In this case the holder is advantageously made entirely from plastics.
It is of course possible to change the size of the pivoting angle between the operative and inopera¬ tive positions by selecting other configurations and placings of the edge surfaces 11,12. The corner 14 may optionally be rounded to a greater or lesser extent for lessening the turning force necessary when a strong latch member 13 is used. The guide portion 7 on the attachment 4 may be formed very simply by having the latch member 13 coact with the underside of the attachment 4 and by having its free end facing forwards.
In the embodiment illustrated in Fig 5, the latch member 13 comprises a spring biassed metal plate which is accommodated at two of its opposing ends in the holder 5 such as to allow for its flexural movement.

Claims

1. Hinge device for a retractable face guard on a safety helmet, comprising an attachment 4 associated with the guard, the former having a substantially flat guide portion (7), a holder (5) mountable on the helmet, and having a guide means (8) such that the attachment is pivotable in the holder about an axis at right angles to the guide portion, and a latching means (10) for latching the attachment in different angular positions relative the holder, characterized in that a spring biassed latch member (13) disposed in association with the holder (5) forms the latching means together with edge surfaces (11,12) on the guide portion, and in that the latch member (13) is adapted for subjecting the guide portion (7) to a force substantially at right angles to an edge surface of the guide portion, and essentially in an upward direction in the guide means (8) of the holder (5).
2. Hinge device as claimed in claim 1, characterized in that the edge surfaces (11,12) are disposed such that a greater force is required to turn the attachment (4) from the operative position of the guard to its inoperative position than vice versa.
3. Hinge device as claimed in claim 1, characterized in that two edge surfaces (11,12) are substantially at right angles to each other.
4. Hinge device as claimed in any one of claims 1-3, characterized in that the guide means (8) comprises two mutually parallel guide arms, between
accommodated.
5. Hinge device as claimed in any one of claims 1-4, characterized in that the latch member constitutes a spring biassed arm having a free, forwardly directed end.
5. Hinge device as claimed in claim 5, characterized in that the guide portion (7) is provided with two oppositely directed journal studs (15), each mounted in a substantially semi-circular bearing surface (16) on the holder (5) and that the latch member (13) is disposed such as to press, via the guide portion (7), the studs (15) radially towards the bearing surfaces (16) for retaining the attachment (4) in the holder (5).
7. Hinge device as claimed in claim 6, characterized in that the latch member (13) is an integral part of the holder (5), which is suitably made from plastics.
8. Hinge device as claimed in claim 5 or 6 , characterized in that the latch member (13) is of metal and is cantilevered in the rest of the holder (5), which is of plastics.
9. Hinge device as claimed in any one of claims 1-4, characterized in that the latch member (13) is a spring biassed metal plate accommodated at two opposing ends in the holder (5) and coacting between these ends with the guide portion.
EP19860900339 1984-12-19 1985-12-18 Hinge device for a retractable face guard on a safety helmet Withdrawn EP0205545A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8406477 1984-12-19
SE8406477A SE455152B (en) 1984-12-19 1984-12-19 GUIDELINE FOR FELLABLE FACE PROTECTION ON A SAFETY HELMET

Publications (1)

Publication Number Publication Date
EP0205545A1 true EP0205545A1 (en) 1986-12-30

Family

ID=20358237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860900339 Withdrawn EP0205545A1 (en) 1984-12-19 1985-12-18 Hinge device for a retractable face guard on a safety helmet

Country Status (5)

Country Link
EP (1) EP0205545A1 (en)
DE (2) DE3590667C2 (en)
GB (1) GB2178943B (en)
SE (1) SE455152B (en)
WO (1) WO1986003656A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3203869A4 (en) * 2014-10-09 2018-05-23 Artisent, LLC Helmet mounted visor

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012528A (en) * 1990-03-01 1991-05-07 Institut De Recherche En Sante Et En . . . Visor attachment for safety helmet
GB2257017A (en) * 1991-06-27 1993-01-06 Secr Defence Bullet proof helmet
SE9102624L (en) * 1991-09-11 1992-11-30 Peltor Ab VISOR DEVICE
GB2260888B (en) * 1991-10-01 1995-10-11 Iles Optical Ltd Safety helmets
ATE171600T1 (en) * 1992-06-05 1998-10-15 Peltor Ab VISOR FOR SAFETY HELMETS
DE59406401D1 (en) * 1993-09-30 1998-08-13 Artilux Herzig Ag Fastening system for a face shield and / or ear muffs on a work helmet
FR2717046B1 (en) * 1994-03-08 1998-11-20 Suif Fernand Albert Device for guiding a protective visor retracted into a helmet.
DE29820078U1 (en) * 1998-11-10 2000-03-23 ENHA Kunststoffverarbeitungs GmbH, 66620 Nonnweiler Visor joint
AU2004224544B2 (en) * 2003-03-27 2009-07-16 Helmet Integrated Systems Limited Respirator
GB2399758A (en) * 2003-03-27 2004-09-29 Helmet Integrated Syst Ltd Respirator with means for controlling a fan in response to a measured flow rate
KR101126545B1 (en) 2008-12-24 2012-03-23 주식회사 센서웨이 Kit for installing risk dector device on the helmet
DE102010027012A1 (en) 2010-07-13 2012-01-19 Anton Pfanner Hard hat, especially for forestry workers
DE102010027014A1 (en) * 2010-07-13 2012-01-19 Anton Pfanner Interior equipment for a safety helmet, especially for forestry workers
DE102010027015A1 (en) 2010-07-13 2012-01-19 Anton Pfanner Face shield for attachment to a protective helmet, in particular for forestry workers
DE102012000370B4 (en) 2012-01-11 2017-02-02 Pfanner Schutzbekleidung Gmbh Hard hat, especially for mountaineers and tree climbers
DE102012000820B4 (en) * 2012-01-17 2018-05-30 Dräger Safety AG & Co. KGaA Hard hat with a swivel visor
USD741550S1 (en) 2014-05-02 2015-10-20 3M Innovative Properties Company Ear muff attachment arm
KR102386680B1 (en) 2014-05-02 2022-04-14 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Ear muff attachment having dual axis of rotation
CA3188089A1 (en) 2020-08-17 2022-02-24 Todd Andrew Zeilinger Hard hat attachment system and sun visor
CA3210574A1 (en) 2021-03-12 2022-09-15 Nicole Z. SUMMERSETT Safety headwear systems and accessories

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US2588553A (en) * 1948-05-17 1952-03-11 Mcwethy Arthur Welder's eyeshield
US3147487A (en) * 1962-11-07 1964-09-08 Mine Safety Appliances Co Conversion shield for mask window
DK116617B (en) * 1967-12-15 1970-01-26 J Olsen Holder for a face shield for removable placement on a helmet.
SE409539B (en) * 1978-03-07 1979-08-27 Hellberg Protection Ab DEVICE FOR ATTACHING TO A SAFETY LOSTAGLE A FOLDABLE VISOR

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8603656A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3203869A4 (en) * 2014-10-09 2018-05-23 Artisent, LLC Helmet mounted visor
US10448693B2 (en) 2014-10-09 2019-10-22 Gentex Corporation Helmet mounted visor
US11019873B2 (en) 2014-10-09 2021-06-01 Gentex Corporation Helmet mounted visor

Also Published As

Publication number Publication date
DE3590667C2 (en) 1996-09-12
WO1986003656A1 (en) 1986-07-03
SE8406477L (en) 1986-06-20
DE3590667T1 (en) 1987-02-19
SE8406477D0 (en) 1984-12-19
GB8616535D0 (en) 1986-08-13
GB2178943B (en) 1988-09-21
SE455152B (en) 1988-06-27
GB2178943A (en) 1987-02-25

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