EP0127811A2 - Casque de protection - Google Patents
Casque de protection Download PDFInfo
- 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- Withdrawn
Links
Images
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)
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)
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)
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)
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)
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 |
-
1983
- 1983-06-04 DE DE3320301A patent/DE3320301C1/de not_active Expired
- 1983-06-04 DE DE8316411U patent/DE8316411U1/de not_active Expired
-
1984
- 1984-05-15 EP EP84105497A patent/EP0127811A3/fr not_active Withdrawn
- 1984-05-17 DK DK242784A patent/DK242784A/da not_active Application Discontinuation
- 1984-05-23 CA CA000454933A patent/CA1222852A/fr not_active Expired
- 1984-06-01 US US06/616,134 patent/US4564959A/en not_active Expired - Fee Related
- 1984-06-01 JP JP59112898A patent/JPS609906A/ja active Pending
- 1984-06-01 AU AU28940/84A patent/AU560906B2/en not_active Ceased
- 1984-06-01 NO NO842208A patent/NO842208L/no unknown
- 1984-06-01 ES ES1984288707U patent/ES288707Y/es not_active Expired
Patent Citations (8)
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)
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
Date | Code | Title | Description |
---|---|---|---|
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 |
Free format text: ORIGINAL CODE: 0009013 |
|
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 |