EP0127811A2 - Casque de protection - Google Patents

Casque de protection Download PDF

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Publication number
EP0127811A2
EP0127811A2 EP84105497A EP84105497A EP0127811A2 EP 0127811 A2 EP0127811 A2 EP 0127811A2 EP 84105497 A EP84105497 A EP 84105497A EP 84105497 A EP84105497 A EP 84105497A EP 0127811 A2 EP0127811 A2 EP 0127811A2
Authority
EP
European Patent Office
Prior art keywords
helmet
helmet according
depressions
bumps
calotte
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Withdrawn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
EP84105497A
Other languages
German (de)
English (en)
Other versions
EP0127811A3 (fr
Inventor
Christian Zahn
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.)
Schuberth Werk GmbH and Co KG
Original Assignee
Schuberth Werk GmbH and Co KG
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 Schuberth Werk GmbH and Co KG filed Critical Schuberth Werk GmbH and Co KG
Publication of EP0127811A2 publication Critical patent/EP0127811A2/fr
Publication of EP0127811A3 publication Critical patent/EP0127811A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/065—Corrugated or ribbed shells
    • 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
    • A42B3/0493—Aerodynamic helmets; Air guiding means therefor

Definitions

  • the invention relates to a helmet with a preferably approximately spherical cap.
  • Crash helmets are mainly used by motorcyclists who want to protect their head from damage from impact or shock in the event of an accident.
  • the helmets have been manufactured with predominantly approximately spherical, but also partially oval, plastic domes, which form the outer impact and shockproof shell of the helmet.
  • the calotte is provided with a soft interior that lies against the head of the helmet wearer.
  • the calotte has a chin strap which is intended to protect the chin area of the helmet wearer.
  • the calotte is provided with a viewing opening that can be covered with a visor disc.
  • Such a full-face helmet cannot fall below certain spatial minimum dimensions because of the high demands on the comfort and the shock-absorbing properties of the interior. Because of its relative size, the helmet is therefore an object that - at least at higher speeds - abilities - forms a noticeable air resistance and therefore exerts considerable forces on the helmet wearer, which must be absorbed by the neck muscles. As a result, the helmet wearer experiences fatigue during long journeys at high speed, which is caused by the tension in the neck muscles.
  • the aim has always been to give the helmet a shape that is as favorable as possible in terms of flow.
  • the surface of the helmet was therefore made as smooth as possible, which was easy to implement, especially with the plastic dome.
  • the possibility of changing the approximate spherical shape of the spherical cap to improve the aerodynamics is limited on the one hand because of the head shape of the helmet wearer, and on the other hand because the helmet wearer must be able to turn his head without difficulty while driving in order to observe the traffic situation.
  • the invention is therefore based on the object of designing a helmet in such a way that the flow resistance of the helmet is reduced at high speeds.
  • the surface of the helmet according to the invention is not made as smooth as possible in order to enable the air flow to be as laminar as possible, but rather has the unevenness formed by elevations and / or depressions which cause the air flow to swirl on the surface produce and prevent the formation of a laminar air flow.
  • a good, desired swirling occurs on the surface of the spherical cap if the unevenness is formed by depressions.
  • the depressions are preferably trough-shaped formed and have a circular cross section, which, however, can be elliptically distorted for technical reasons.
  • the maximum depth of the depressions and the size of the diameter must be selected so that, in relation to the size of the helmet, the negative pressure on the back of the helmet is optimally reduced at high speeds, but this must not lead to a strong increase in the frictional resistance caused by the wind.
  • the reduction according to the invention of the total rearward forces occurring on the helmet has occurred with depressions distributed over the entire helmet, the maximum depth of which was approximately 1.2 to 1.4 mm and the diameter of which was approximately 15 to 16 mm.
  • the depressions can be distributed tightly over the entire surface of the helmet.
  • Such a design of the helmet leaves practically no preferred direction for the helmet. If the helmet wearer turns his head to observe, for example, lateral traffic, this does not significantly increase the forces on the helmet.
  • the advantage of the slight increase in helmet forces on the head when turning the head can always be achieved if the arrangement of the bumps from the front and from the side is approximately the same, it not being necessary for the entire surface of the helmet to be provided with depressions.
  • the bumps according to the invention can also be formed by elevations. However, these must also be distributed with a certain uniformity, at least in fields, over the helmet surface in order to achieve a swirling of the air flow on the surface.
  • the bumps according to the invention can be produced very easily if they are formed by flattening the curved dome surface. This also causes the air flow to swirl to a certain extent. Therefore, the contour of the flats can be circular or elliptical or also be polygonal, in the latter case a somewhat greater depth of the flattening can be achieved.
  • a polygonal depression can be created with flat surfaces converging towards one another, which thus form a prismatic depression.
  • FIG. 1 shows an integral helmet with an approximately spherical cap 1, the front cutout 2 of which can be covered by means of a visor disk 4 located on a visor bracket 3.
  • the outer surface of the calotte 1 is provided over the entire area with circular depressions 5 which are adjacent to one another at a distance.
  • the depressions 5 are also on the visor bracket 3, but for optical reasons not on the visor disk 4.
  • Figure 2 illustrates that the recesses 5 are trough-shaped, that is, their depth increases continuously from the edge to a maximum depth and from there to the opposite takes the edge off again. Since the depressions have a circular contour in the top view, they are designed to be rotationally symmetrical about their center.
  • the maximum depth of the depressions 5 is 1.2 to 1.4 mm and the diameter is approximately 15 mm.
  • Figure 3 shows an embodiment of the unevenness, which is very easy to manufacture technically.
  • the unevenness is formed here only by flattening 5 'in the curved surface 6 of the spherical cap 1. These flattenings 5 'can be viewed as depressions, but also as elevations if the helmet surface between the lowest points T is viewed.
  • contour of these flats 5 ' can be circular, so that there is an appearance of the helmet, which is shown in Figure 1.
  • the contours can also be polygonal.
  • FIG. 4 shows in section depressions 5 ", the center of which forms the deepest point T and which consists of planes 7 which are inclined with respect to one another and which meet at point T.
  • prismatic depressions 5" are formed, the contour of which is polygonal. Exemplary embodiments of these contours are shown in FIG. 5.
  • Figure 5a shows a quadrangular contour with four flat surfaces 7 ''
  • Figure 5b shows a triangular contour with three flat surfaces 7 ''
  • Figure 5c shows a hexagonal contour with six flat surfaces 7 '' '.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Helmets And Other Head Coverings (AREA)
EP84105497A 1983-06-04 1984-05-15 Casque de protection Withdrawn EP0127811A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3320301A DE3320301C1 (de) 1983-06-04 1983-06-04 Sturzhelm
DE3320301 1983-06-04

Publications (2)

Publication Number Publication Date
EP0127811A2 true EP0127811A2 (fr) 1984-12-12
EP0127811A3 EP0127811A3 (fr) 1985-01-23

Family

ID=6200706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105497A Withdrawn EP0127811A3 (fr) 1983-06-04 1984-05-15 Casque de protection

Country Status (9)

Country Link
US (1) US4564959A (fr)
EP (1) EP0127811A3 (fr)
JP (1) JPS609906A (fr)
AU (1) AU560906B2 (fr)
CA (1) CA1222852A (fr)
DE (2) DE3320301C1 (fr)
DK (1) DK242784A (fr)
ES (1) ES288707Y (fr)
NO (1) NO842208L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000031A1 (fr) * 1992-06-27 1994-01-06 Brine, Christopher, Andrew Casque de protection
WO1994002042A1 (fr) * 1992-07-16 1994-02-03 Willi Hans Velke Casque protecteur

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836464A (ja) * 1982-07-21 1983-03-03 Canon Inc 液体記録装置
DE3325601C2 (de) * 1983-07-15 1985-06-27 Bayerische Motoren Werke AG, 8000 München Schutzhelm für Motorradfahrer
JPS6385626U (fr) * 1986-11-22 1988-06-04
JP2712165B2 (ja) * 1987-02-16 1998-02-10 セイコーエプソン株式会社 インクジェット式記録ヘッドの駆動方法
US5575018A (en) * 1994-04-26 1996-11-19 Bell Sports, Inc. Open cockpit racing helmet
US5887280A (en) * 1995-03-10 1999-03-30 Waring; John Wearable article for athlete with vortex generators to reduce form drag
CA2144350A1 (fr) * 1995-03-10 1996-09-11 John Waring Accessoire reducteur de trainee pour athlete
WO1997008966A1 (fr) * 1995-09-08 1997-03-13 Jacobs David L Reduction de la force de trainee sur des corps se deplaçant dans un milieu fluide
US5836016A (en) * 1996-02-02 1998-11-17 Jacobs; David L. Method and system for reducing drag on the movement of bluff bodies through a fluid medium and increasing heat transfer
US5794275A (en) * 1996-02-09 1998-08-18 Donzis; Byron A. Impact absorbing shield for protective gear
JPH1047315A (ja) * 1996-07-29 1998-02-17 Junichi Hirata 流体抵抗低減用品
US5996128A (en) * 1998-12-31 1999-12-07 Korea Ogk Co., Ltd. Air flow adjusting rear member of the helmet
USD434532S (en) * 1999-07-27 2000-11-28 Anthony Moscatello Helmet
GB2353939A (en) * 1999-09-13 2001-03-14 Rodney Aston Lee An aerodynamic safety helmet
US6260212B1 (en) * 1999-10-12 2001-07-17 Mine Safety Appliances Company Head-protective helmet with geodesic dome
IT248131Y1 (it) * 1999-11-12 2002-12-10 Stilma Srl Elementi di protezione localizzata, del tipo con elevato grado diresistenza all'abrasione, particolarmente per l'abbigliamento tecnico
GB2400301A (en) * 2003-04-10 2004-10-13 Helmet Integrated Syst Ltd Protective helmet shell
FI20030538A (fi) * 2003-04-10 2004-10-11 Esko Kalevi Pulkka Menetelmä liikekitkan vähentämiseksi
WO2006089235A1 (fr) 2005-02-16 2006-08-24 Ferrara Vincent R Element compressible amortissant les chocs a ventilation d'air
US7832023B2 (en) * 2004-12-07 2010-11-16 Crisco Joseph J Protective headgear with improved shell construction
US20070284848A1 (en) * 2006-05-23 2007-12-13 Nike, Inc. Drag-reducing structure
ES2298040B1 (es) * 2006-06-08 2009-04-01 Marco Antonio Navarro Juan Superficie aerodinamica y fluidodinamica.
DE202007003602U1 (de) 2007-03-08 2007-07-26 Casco Group Societate In Comandita Simpla (Scs) Sporthelm mit geringem Luftwiderstand
US20100103261A1 (en) * 2008-10-23 2010-04-29 James Michael Felt Bicycle handlebar video system
US20100186150A1 (en) * 2009-01-28 2010-07-29 Xenith, Llc Protective headgear compression member
US20120047634A1 (en) * 2009-05-14 2012-03-01 Uday Vaidya Long fiber thermoplastic helmet inserts and helmets and methods of making each
US9398782B2 (en) 2010-04-23 2016-07-26 Felt Racing, Llc Aerodynamic bicycle helmet
DE102011112790A1 (de) * 2010-09-09 2012-03-15 Oliver Schimpf Schutzhelm; Verfahren zur Verminderung oder Verhinderung einer Kopfverletzung
US8814150B2 (en) 2011-12-14 2014-08-26 Xenith, Llc Shock absorbers for protective body gear
US8950735B2 (en) 2011-12-14 2015-02-10 Xenith, Llc Shock absorbers for protective body gear
US9642410B2 (en) 2013-02-06 2017-05-09 Turtle Shell Protective Systems Llc Helmet with external shock wave dampening panels
JP6549820B2 (ja) 2014-06-06 2019-07-24 株式会社Ｓｈｏｅｉ シールド及びヘルメット
US9408423B2 (en) * 2014-09-25 2016-08-09 David A. Guerra Impact reducing sport equipment
US11585638B1 (en) * 2015-05-29 2023-02-21 Dennis P Gagnon, Jr. Combat helmet having force impact distribution
US10736371B2 (en) 2016-10-01 2020-08-11 Choon Kee Lee Mechanical-waves attenuating protective headgear
US11134738B2 (en) 2017-10-25 2021-10-05 Turtle Shell Protective Systems Llc Helmet with external flexible cage
US10433610B2 (en) 2017-11-16 2019-10-08 Choon Kee Lee Mechanical-waves attenuating protective headgear
US10561189B2 (en) 2017-12-06 2020-02-18 Choon Kee Lee Protective headgear
CN109008035B (zh) * 2018-07-25 2021-10-15 王晖 一种缓冲结构、头盔
USD969409S1 (en) 2019-04-18 2022-11-08 Wayne Bentley Evans Helmet

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730121A (en) * 1953-05-15 1955-05-18 Vivian Cleland Dewar Gray Improvements in bodies adapted to have relative motion with respect to a fluid
US3548410A (en) * 1969-05-01 1970-12-22 Jerry W Parker Airfoil face shield and helmet
US3927421A (en) * 1974-08-23 1975-12-23 Alan A Simon Helmet visor
DE7607301U1 (de) * 1976-03-10 1976-12-09 Fa. Hans Roemer, 7910 Neu-Ulm Motorsporthelm
FR2313879A1 (fr) * 1975-06-12 1977-01-07 Gyoery Kalman Casques de protection, en particulier pour des motocyclistes
US4075714A (en) * 1976-11-15 1978-02-28 Sierra Engineering Co. Helmet characterized by negative lift
GB2048056A (en) * 1979-04-25 1980-12-10 Int Helmets Ag Safety Helmet
EP0090720A1 (fr) * 1982-03-22 1983-10-05 Regie Nationale Des Usines Renault Casque à structure alvéolaire, notamment pour cycliste ou cyclomotoriste

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2081335A (en) * 1935-07-17 1937-05-25 Standard Sports Mfg Co Head guard
AT235033B (de) * 1962-01-27 1964-08-10 Wastl Mariner Kopfschutz
US3551911A (en) * 1969-02-04 1971-01-05 George Frost Co Protective helmet and method of making same
US3783450A (en) * 1973-02-05 1974-01-08 Connor W O Hockey helmet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730121A (en) * 1953-05-15 1955-05-18 Vivian Cleland Dewar Gray Improvements in bodies adapted to have relative motion with respect to a fluid
US3548410A (en) * 1969-05-01 1970-12-22 Jerry W Parker Airfoil face shield and helmet
US3927421A (en) * 1974-08-23 1975-12-23 Alan A Simon Helmet visor
FR2313879A1 (fr) * 1975-06-12 1977-01-07 Gyoery Kalman Casques de protection, en particulier pour des motocyclistes
DE7607301U1 (de) * 1976-03-10 1976-12-09 Fa. Hans Roemer, 7910 Neu-Ulm Motorsporthelm
US4075714A (en) * 1976-11-15 1978-02-28 Sierra Engineering Co. Helmet characterized by negative lift
GB2048056A (en) * 1979-04-25 1980-12-10 Int Helmets Ag Safety Helmet
EP0090720A1 (fr) * 1982-03-22 1983-10-05 Regie Nationale Des Usines Renault Casque à structure alvéolaire, notamment pour cycliste ou cyclomotoriste

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000031A1 (fr) * 1992-06-27 1994-01-06 Brine, Christopher, Andrew Casque de protection
US5561866A (en) * 1992-06-27 1996-10-08 Leslie Ross Safety Helmets
WO1994002042A1 (fr) * 1992-07-16 1994-02-03 Willi Hans Velke Casque protecteur

Also Published As

Publication number Publication date
ES288707Y (es) 1986-10-01
US4564959A (en) 1986-01-21
CA1222852A (fr) 1987-06-16
ES288707U (es) 1986-01-16
DK242784D0 (da) 1984-05-17
AU560906B2 (en) 1987-04-16
JPS609906A (ja) 1985-01-19
DE3320301C1 (de) 1984-11-08
NO842208L (no) 1984-12-05
EP0127811A3 (fr) 1985-01-23
DK242784A (da) 1984-12-05
AU2894084A (en) 1984-12-06
DE8316411U1 (de) 1984-04-05

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

ITCL It: translation for ep claims filed

Representative=s name: STUDIO ING. ALFREDO RAIMONDI

17P Request for examination filed

Effective date: 19850323

EL Fr: translation of claims filed
TCNL Nl: translation of patent claims filed
17Q First examination report despatched

Effective date: 19860213

R17C First examination report despatched (corrected)

Effective date: 19860813

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881025

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZAHN, CHRISTIAN