EP3310195B1 - Fahrradhelm zum zeitfahren mit ohrschutz - Google Patents

Fahrradhelm zum zeitfahren mit ohrschutz Download PDF

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Publication number
EP3310195B1
EP3310195B1 EP16812643.1A EP16812643A EP3310195B1 EP 3310195 B1 EP3310195 B1 EP 3310195B1 EP 16812643 A EP16812643 A EP 16812643A EP 3310195 B1 EP3310195 B1 EP 3310195B1
Authority
EP
European Patent Office
Prior art keywords
helmet
shield
helmet body
magnet
brow
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.)
Active
Application number
EP16812643.1A
Other languages
English (en)
French (fr)
Other versions
EP3310195A1 (de
EP3310195A4 (de
Inventor
Samuel Kass
Robert WESSON
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.)
Bell Sports Inc
Original Assignee
Bell Sports Inc
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 Bell Sports Inc filed Critical Bell Sports Inc
Priority to EP21020230.5A priority Critical patent/EP3884797A1/de
Priority claimed from PCT/US2016/038432 external-priority patent/WO2016205823A1/en
Publication of EP3310195A1 publication Critical patent/EP3310195A1/de
Publication of EP3310195A4 publication Critical patent/EP3310195A4/de
Application granted granted Critical
Publication of EP3310195B1 publication Critical patent/EP3310195B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A42B3/28—Ventilating arrangements
    • A42B3/281—Air ducting systems
    • A42B3/283—Air inlets or outlets, with or without closure shutters
    • 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
    • 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
    • A42B3/066—Impact-absorbing shells, e.g. of crash helmets specially adapted for cycling helmets, e.g. for soft shelled 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
    • A42B3/16—Ear protection devices
    • A42B3/163—Wind or noise deflectors
    • 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
    • A42B3/185—Securing goggles or spectacles on helmet 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
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A42B3/221—Attaching visors to helmet shells, e.g. on motorcycle helmets

Definitions

  • Bicycle time trials are a use scenario where sometimes-conflicting needs are carefully balanced. The goal of a cycling time trial is to traverse a course or track in the fastest time possible. Aerodynamic advantages may improve time trial results.
  • a time trial helmet ideally will provide an aerodynamic advantage without sacrificing the protection afforded the user. At the same time, the helmet needs to be comfortable enough to not interfere with race performance. Thus, ventilation and weight are concerns that need to be balanced against the protection and reduced drag.
  • FIGs. 1-3 depict perspective views of non-limiting examples of helmets with shields 14, which can include shields 50, 60, and 70.
  • FIG. 1 shows a helmet 10, a helmet body 12, a shield 14, a front portion 16 of the helmet body 12, a tail portion 18 of the helmet body 12, a brow portion 20 of the shield 14, an ear portion 22 of the shield 14, a brow vent 24, a shield magnet 26, a bone line 28, and a full shield 50.
  • FIG. 2 shows a helmet 30 having the elements of helmet 10, but with a vented shield 60 instead of the full, unvented shield 50.
  • FIG. 2 includes at least one ear vent 32.
  • FIG. 3 shows a helmet 40 having the elements of helmet 10 and 30, but with a shield 70 with the eye portion unshielded in the place of the full shield 50 of FIG. 1 or the vented shield 60 of FIG. 2 .
  • a helmet e.g. helmet 10 of FIG. 1 , helmet 30 of FIG. 2 , helmet 40 of FIG. 3 etc.
  • the helmets are intended for use in bicycle time trials (TT), a use scenario where different needs are carefully balanced.
  • TT bicycle time trials
  • the goal of a time trial is to traverse a course or track in the fastest time possible; an aerodynamic advantage may improve time trial results.
  • a time trial helmet ideally will provide an aerodynamic advantage, or at least minimize drag caused by the helmet, without sacrificing the protection afforded the user.
  • the helmet needs to be comfortable enough to not interfere with race performance.
  • ventilation and weight are concerns that need to be balanced against the protection and reduced drag.
  • FIGs. 1-3 address these needs.
  • helmet body 12 can refers to any part of the helmet that is not a shield 14, but would not necessarily include straps or other ancillary or attachment features for securing the helmet to a head of the wearer or user.
  • the helmet body 12 can refer, collectively, to an outer shell 11, an impact liner or energy absorbing layer 13, and a comfort liner or fit liner 19, as described in greater detail below.
  • the protective helmet body 12 for the TT helmet examples disclosed herein can comprise one or more energy absorbing materials 13, such as an in inner energy absorbing material disposed within the outer shell 11, although a protective helmet 10, 30, 40 need not have both.
  • the helmets 10, 30, 40 can be formed as an in-molded helmet that may comprise one or more than one layers, such as three layers, which can include: (i) a thin outer shell 11, (ii) an impact liner or energy absorbing layer 13, and (iii) a comfort liner or fit liner 19, each of which is addressed in greater detail below.
  • the outer shell 11 may be formed of a plastic, resin, fiberglass, or other suitable material such as a polycarbonate (PC) shell, or a polyethylene terephthalate (PET) shell, whether stamped, in-molded, injection molded, vacuum formed, or formed by another suitable process.
  • the outer shell 11 may comprise an outer surface 11a and an inner surface 11b opposite the outer surface 11a, outer surface 11a being farther from a head of the user 80 and the inner surface 11b being nearer the head of the user 80.
  • the outer shell 11 may provide a material in which the impact liner 13 can be in-molded, may provide a smooth aerodynamic finish, and may provide a decorative finish for improved aesthetics.
  • Polycarbonate shells are usually either in-molded in the form of a vacuum formed sheet, or alternatively, can be attached to the foam liner with an adhesive.
  • the polycarbonate shell is taped onto the foam liner after the polycarbonate shell is molded.
  • the in-molded polycarbonate shell method may be employed as bike helmets used for road cycling.
  • a thickness of the outer shell 11 can comprise a thickness or average thickness, measured between the outer surface 11a and the inner surface 11b, in a range of 0-5 mm or about 1, 2, or 3 mm.
  • the impact liner or energy absorbing layer 13 may be disposed inside and adjacent the outer shell.
  • the impact liner 13 may comprise an outer surface 13a and an inner surface 13b opposite the outer surface 13a, the outer surface 13a being farther from a head of the user 80 and the inner surface 13b being nearer the head of the user 80.
  • the outer surface 13a can be adjacent or in direct contact with the inner surface 11b of the shell 11.
  • the energy absorbing layer 13 may be made of plastic, polymer, foam, or other suitable energy absorbing material to absorb energy and to contribute to energy management for protecting a wearer during impact.
  • the energy absorbing layer 13 may include, without limitation, expanded polypropylene (EPP), expanded polystyrene (EPS), expanded polyurethane (EPTU or EPU), or expanded polyolefin (EPO).
  • EPP expanded polypropylene
  • EPS expanded polystyrene
  • EPTU or EPU expanded polyurethane
  • EPO expanded polyolefin
  • In-molded helmets are often formed such that the outer shell 11 of the helmet 10, 30, 40 is bonded directly to an energy absorbing expanding foam 13 as it is expanding and being molded into the shell.
  • the energy absorbing layer 13 may be in-molded as a single or monolithic body of energy absorbing material and an outer shell 11.
  • the energy absorbing layer 13 may be formed of multiple portions or a plurality of portions.
  • the energy absorbing material 13 can be configured to absorb energy from an impact by being crushed or cracking.
  • the impact liner 13 may be permanently coupled to the outer shell 11 with an adhesive, glue, or other suitable chemical or mechanical attachment.
  • the outer shell 11 may be made from a combination of carbon and fiberglass, in which the carbon shell may be permanently coupled to the energy absorbing layer 13, such as an EPS liner, using chemical or mechanical fastening, such as with a glue or adhesive.
  • the outer shell 11 may be made from a standard PC shell in which the energy absorbing layer is in-molded into the outer shell using a standard in-molding process.
  • the comfort liner or fit liner 19 may be optional, and may be disposed inside the outer shell 11 and the impact liner 13, such as with an outer surface 19a of the comfort liner 19 being disposed adjacent or indirect contact with an inner surface 13b of the impact liner 13.
  • An inner surface 19b of the inner surface 19 can be in direct contact, co-planar, or co-terminus with a head of the user or wearer 80.
  • the comfort liner may omitted entirely so that the inner surface 13a of the impact liner is in direct contact, co-planar, or co-terminus with a head of the user or wearer 80.
  • the comfort liner 19 may be made of textiles, plastic, foam, or other suitable material, such as polyester or nylon.
  • the comfort liner 19 may also include portions of a fit system, such as a fit system comprising a dial that can real in or pay out portions of the fit system to match a size, shape, or both a size and shape of the head of the user 80.
  • the comfort line 19 may comprise a low friction layer or slip plane for rotational energy management.
  • the comfort liner 19 may be formed of one or more pads of material that can be joined together, or formed as discrete components, that are coupled to the in-molded helmet.
  • the comfort liner 19 may be releasably or permanently attached to the impact liner 13 using snaps, hook and loop fasteners, adhesives, or other suitable materials.
  • the comfort liner 19 can provide a cushion and improved fit for the wearer of the in-molded helmet 10, 30, 40.
  • a thickness of the comfort liner 19 can comprise a thickness or average thickness, measured between the outer surface 19 and the inner surface 19b, in a range of 0-10 mm, 3-7 mm, or about 5 mm.
  • the shields 14 releasably coupled to the helmets of FIGs. 1-3 may also be described as visors or lenses.
  • the shield 14 may be made to be removable and be releasably coupled to the helmet body 12 to facilitate putting on and removing the helmet by the user.
  • the shield 14 is releasably coupled to the helmet body 12 with magnets (e.g. shield magnets 26, body magnets 86, etc.).
  • magnets e.g. shield magnets 26, body magnets 86, etc.
  • any suitable attachment mechanism or combination of attachment mechanisms including but not limited to, clips, latches, magnets, locks, slots, channels, hook and loop fasteners, friction (e.g. inserted into a tight slot in the helmet body 12, etc.) may be used.
  • a notch or cutout can be formed in the lower edge of the shield 14 such that the shield 14 fits around a nose of the user 80 and the nose of the user 80 can extend beyond and forward of the shield when the helmet is being worn by the user 80
  • Contours or a shape of the helmet may be made continuous across a transition between, or at an interface of, the helmet body 12 and the shield 14 to create a continuous, integral helmet with an improved aerodynamic look and performance.
  • the shield 14 operates as an integrated ear cover by extending from the front of the helmet to a side rear portion of the helmet. This can provide more aerodynamic performance and faster times for the cyclist, and allows a rider to cover and uncover both the rider's eyes and ears simultaneously.
  • the helmet can be formed so that the shield 14 is part of a one-piece design that wraps around to side portions of the helmet to cover the ears 82 of the user 80, in addition to shielding the eyes 90 (e.g.
  • the shield 14 of FIGs. 1 and 2 , etc. In contrast, conventional time trial helmets, as known in the art, have included ear covers integrated or formed as part of the helmet body 12. Conventional helmets have also included smaller removable shields that have just covered the eyes 90 of the user 80 without wrapping around to the sides and rear of the helmet to additionally cover the ears 82 of the user.
  • the improved design of the current time trial helmet disclosed herein and shown, e.g., in FIGs. 1-3 comprises a shield 14 that both functions as a cover for the eyes 90, face, both or neither, while also extending all the way back to cover the ears 82 of the user 80.
  • the shield 14 may be formed or molded as a single piece, or it may be assembled from two or more separate pieces.
  • the shield 14 may be covered with a coating having special optical properties (e.g. polarized, contrast enhancing, filtering a particular range of wavelengths, intensity reduction, etc.).
  • the shield 14 may incorporate some form of display technology (e.g. heads-up display, time/pace indicator, etc.).
  • a front portion 16 of the helmet body 12 refers to the leading part of the helmet body 12, particularly the portion of the helmet body 12 that is in front of or in alignment with a center of a helmet wearer's face.
  • a tail portion 18 of the helmet body 12 refers to the trailing part of the helmet body 12, particularly the portion of the helmet body 12 which is behind or in alignment with the back of the helmet users head.
  • the front portion 16 of the helmet may be rounded, while the tail portion 18 may be tapered, giving the helmet an overall tear-drop or seed-like shape. See, for example, FIG. 8 . Such a shape offers aerodynamic advantages.
  • the brow portion 20 of the shield 14 refers to a connecting or bridge portion of the shield 14 that connects ear 82 ( FIG. 5a ) cover portions (e.g. ear portion 22, etc.) of the shield 14.
  • the shield 14 may not provide cover for the user's face or eyes 90. See, for example, the partial shield 70 of FIGs. 3 and 4C .
  • the brow portion 20 allows the shield 14 to provide cover for the users ears 82, provide the aerodynamic advantages previously discussed, yet remain a single piece, as opposed to two separate ear covers. As seen in FIGs. 1-3 , the brow portion 20 extends along the brow portion of the helmet at the lower front edge of the helmet body 12.
  • the ear portion 22 of the shield 14 refers to the portion of the shield 14 that covers the helmet user's ears 82 ( FIG. 5a ). According to various embodiments, the ear portion 22 of the shield 14 is flush with the tail portion 18 of the helmet body 12, reducing drag. In some embodiments, such as that depicted in FIG. 1 , the ear portion 22 of the shield 14 is a solid piece of material. In other embodiments, such as that depicted in FIG. 2 , the ear portion 22 of the shield 14 includes one or more ear vents 32, to provide ventilation and aid the rider in hearing their environment. The size of the ear vent 32 should balance the desired ventilation versus a potential negative impact on aerodynamic advantage of the TT helmet.
  • the brow vent 24 in the shield 50, 60, 70 is an opening that allows a desired amount of air to pass into the helmet, such as for ventilation and cooling. While some airflow can be desirable, such as to reduce heat and improving cooing and comfort for a rider, excessive airflow can create unwanted drag, and decrease aerodynamic performance of the helmet.
  • the ventilation provided by the brow vents 24 passes between the top edge 52 of the shield 14 and the helmet body 12. As seen in FIGs. 1-3 , the brow vents 24 are places where the top edge 52 of the shield 14 dips down, creating a gap when the shield 14 is seated with the helmet body 12. In other embodiments, the brow vent 24 may be shaped and located such that the ventilation provided passes entirely through the shield 14 or the helmet body 12.
  • a shield magnet 26 is a magnet attached to, or incorporated within, the shield 14, for the purpose of coupling with one or more body magnets 86 (e.g. magnets associated with the helmet body 12, etc.).
  • a shield magnet 26 may be coupled to the shield 14 in a number of ways, including but not limited to one or more of, adhesive, clips, enclosures, in-molding, and any other suitable way of attachment.
  • the shield magnets 26 of FIGs. 1-3 are coupled to the shield 14 using clips that are secured to the shield 14 through holes (e.g. shield magnet slot 54 of FIGs. 4A-C , etc.), according to one embodiment.
  • other attachment mechanisms may be used in addition to or instead of magnets.
  • the shield magnet 26 is a permanent magnet. In other embodiments, the shield magnet 26 may be replaced with a ferromagnetic material that can magnetically couple with the body magnets 86 of the helmet body 12.
  • a bone line 28 is a contour line along the exterior surface of the helmet, which contributes to the aerodynamic performance of the helmet.
  • the bone lines 28 can begin at the front of the helmet and extend along the sides and top of the helmet to the rear of the helmet.
  • a helmet comprises a helmet body 12 and a shield 14.
  • the helmet body 12 comprises a front portion 16 and a tail portion 18, and the shield 14 comprises two ear portions 22 connected by a brow portion 20.
  • the shield 14 is releasably coupled to the helmet body 12. Furthermore, at least a portion of an ear 82 of a helmet user 80 is substantially exposed with respect to the helmet body 12 and covered with respect to the shield 14. Finally, the brow portion 20 of the shield 14 extends across the front portion 16 of the helmet.
  • the helmet may further comprise at least one body magnet 86 and at least one shield magnet 26 coupled to the shield 14.
  • the at least one body magnet 86 and the at least one shield magnet 26 may be aligned with respect to each other such that the shield 14 can be magnetically coupled to the helmet body 12.
  • the shield 14 may further comprise at least one brow vent 24 along a top edge 52 of the shield 14.
  • Each ear portion 22 of the shield 14 may comprise at least one ear vent 32.
  • a helmet comprises a helmet body 12 and a shield 14.
  • the helmet body 12 comprises a front portion 16 and a tail portion 18.
  • the shield 14 comprises two ear portions 22 connected by a brow portion 20.
  • the shield 14 is magnetically coupled to the helmet body 12.
  • an ear 82 of a helmet user 80 is fully or nearly fully exposed with respect to the helmet body 12 and covered by or only by the shield 14.
  • the brow portion 20 of the shield 14 extends across the front portion 16 of the helmet.
  • the tail portion 18 is tapered and the front portion 16 has a rounded leading edge 92, such that the helmet body 12 has a tear drop 130 form.
  • a helmet comprises a helmet body 12 and a shield 14.
  • the helmet body 12 comprises a front portion 16, a tail portion 18, and a plurality of body magnets 86.
  • the shield 14 comprises a plurality of shield magnets 26, as well as two ear portions 22 connected by a brow portion 20.
  • the shield 14 is releasably coupled to the helmet body 12 by the magnetic attraction between the plurality of body magnets 86 and the plurality of shield magnets 26.
  • an ear 82 of a helmet user 80 is substantially exposed with respect to the helmet body 12 and covered with respect to the shield 14.
  • the brow portion 20 of the shield 14 extends across the front portion 16 of the helmet.
  • FIGs. 4A-C depict a perspective view of non-limiting examples of shields 14 for use with a time trial helmet. Specifically, FIG. 4A shows a full shield 50, as well as a shield magnetic slot 54. FIG. 4B shows a vented shield 60, and FIG. 4C shows a partial shield 70.
  • the full shield 50 of FIG. 4A provides cover for both the ears 82 as well as the riders eyes 90.
  • the brow portion 20 of the full shield 50 may be extended downward to provide cover for just the rider's eyes 90, so their vision is not impaired as they race.
  • the brow portion 20 of the full shield 50 may be extended even further downward, covering more of the rider's face. This may provide aerodynamic benefits.
  • the single-piece nature of the full shield 50 may make it more aerodynamic than other shields 14, such as the partial shield 70 and the vented shield 60, but at the cost of ventilation and comfort.
  • the full shield 50 may be made of a single piece of material, or it may be assembled from multiple pieces.
  • the vented shield 60 of FIG. 4B (and FIG. 2 ), provides cover for both the ears 82 as well as the rider's eyes 90, similar to the full shield 50. Furthermore, the vented shield 60 may cover more of the rider's face than their eyes 90, as discussed with respect to the full, unvented shield 50 above. However, the vented shield 60 has one or more ear vents 32 located on the ear portions 22 along the side of the shield 14. These vents may provide needed ventilation and cooling, and may also server to allow sound to enter the time trial helmet, which may help the rider have better situational awareness as they race.
  • the vented shield 60 may be made of a single piece of material, or it may be assembled from multiple pieces.
  • the partial shield 70 of FIG. 4C (and FIG. 3 ) provides cover for the rider's ears 82, but does not cover the rider's eyes 90.
  • the partial shield 70 can therefore accommodate a rider wearing sunglasses or other eyeglasses, instead of using the shield 14 to cover their eyes 90.
  • the brow portion 20 of the partial shield 70 is reduced in comparison to the brow portion 20 of the full shield 50 and the vented shield 60; the size of the brow portion 20 is sufficient to connect the two ear portions 22 securely.
  • the shield magnetic slot 54 is a feature of a shield 14 with which a shield magnet 26 may be coupled to the shield 14. As depicted in FIGs. 4A-C , the shield magnetic slot 54 may be one or more holes or slots in the shield 14 which may be used to anchor a shield magnet 26 to the shield 14. For example, in the embodiments depicted in FIGs. 1-3 , the shield magnetic slots 54 are attached to clips with which the shield magnets 26 are coupled.
  • FIG. 5A depicts a side view of a helmet user 80 wearing the helmet body 12 of FIGs. 1-3 , according to various embodiments. Specifically, FIG. 5a shows a helmet user 80, an ear 82, an indentation 84, a body magnet 86, a lip 88 of the helmet body 12, an eye 90, and a rounded leading edge 92.
  • FIG. 5A illustrates the time trial helmet on a user head without a shield 14 to show the relative position of the user's head and ear 82 with respect to the helmet.
  • User heads are not uniform, and positions of ears 82 on user heads can change with respect to other users and with respect to the helmet.
  • the position of the helmet user 80 or rider's ear 82 shown in FIG. 5A is a relative position.
  • the relative position shown in FIG. 5A illustrates a position that is about as far back as a helmet user's ear 82 will typically go.
  • most ears 82 or a majority of ears 82
  • most ears 82 will be situated farther forward, or nearer the front of the opening and more fully situated behind the ear portion 22 of the shield 14.
  • most ears 82 will be mostly or completely exposed with respect to the helmet body 12 and mostly or completely exposed when the shield 14 is releasably decoupled from the helmet body 12.
  • the indentations 84 shown in FIG. 5A are sized to hold a shield magnet 26 while it is coupled to the shield 14, thus allowing the shield 14 to sit flush with the helmet body 12.
  • the indentations 84 also serve as a visual and tactile guide for the helmet user 80 to align the shield 14 correctly with the helmet body 12, according to various embodiments.
  • the helmet bodies of FIGs. 1-3 all make use of indentations 84.
  • the helmet body 12 may not include indentations 84.
  • the shield magnets 26 couple with the shield 14 such that the interior surface of the shield 14 is unobstructed, and may sit flush with the helmet body 12 without requiring indentations 84.
  • such embodiments may employ a visual indication of the location of the one or more body magnets 86 embedded in the helmet body 12, to assist with initial shield 14 alignment.
  • the body magnet 86 may be a magnet (e.g. permanent magnet, etc.) which is incorporated in the helmet body 12 such that it may magnetically couple with the shield magnet(s) 26, holding the shield 14 in place while the time trial helmet is in use.
  • the body magnet 86 may be embedded in the material of the helmet body 12 (i.e. in-molded, mechanically inserted post molding, etc.).
  • the body magnet 86 may be affixed to the surface, or affixed such that it is exposed. In embodiments such as the one depicted in FIG.
  • one or more body magnets 86 may be embedded in, or affixed to, the helmet body 12 in proximity to each indentation 84.
  • a reduced magnet i.e. smaller, weaker, lighter, etc.
  • amplified presence of body magnets 86 e.g. using multiple body magnets 86 for each shield magnet 26, using stronger body magnets 86, etc.
  • the indentations 84, the body magnets 86, or both, may be located in a lip 88 of the helmet body 12, as shown in FIG. 5a .
  • the helmet body 12 may have one or more "lips" which provide an idealized surface where the shield 14 may be seated while being releasably coupled to the helmet body 12.
  • the lips 88 of the helmet body 12 are where indentations 84, the body magnets 86, or both, may be located.
  • the helmet body 12 of the helmets of FIGs. 1-3 illustrate a rounded leading edge 92, for aerodynamic purposes.
  • the rounded leading edge 92 is located on the front portion 16 of the helmet body 12, according to various embodiments.
  • At least one body magnet 86 may be encased within the helmet body 12.
  • the helmet may further comprise at least one indentation 84 set in a lip 88 of the helmet body 12, at least one body magnet 86, and at least one shield magnet 26 coupled to the shield 14.
  • At least one body magnet 86 may be encased within the helmet body 12 near the location of each indentation 84.
  • the shield magnets 26 may fit within the indentations 84.
  • FIG. 5B depicts a side view of the helmet of FIG. 2 , according to various embodiments.
  • a height of the helmet can taper to a minimum as the helmet tapers to a smaller size or lesser height at the rear tail or beak of the helmet.
  • FIG. 5B shows helmet 30 comprising an outer surface 100 of the brow portion 20, an outer surface 102 of the front portion 16, an outer surface 104 of the ear portions 22, and an outer surface 106 of the tail portion 18.
  • Contours or a shape of the helmet can be continuous across a transition between, or at an interface of, the helmet body 12 and the shield 14 to create a continuous, integral helmet with an improved aerodynamic look and performance.
  • an outer surface 100 of the brow portion 20 of the shield 14 may be recessed with respect to an outer surface 102 of the front portion 16 of the helmet body 12.
  • An outer surface 104 of the two ear portions 22 of the shield 14 may be substantially flush with an outer surface 106 of the tail portion 18 of the helmet body 12.
  • an outer surface of the shield 14 may be recessed with respect to an outer surface 102 of the front portion 16 of the helmet body 12.
  • the outer surface of the shield 14 may be substantially flush with an outer surface 106 of the tail portion 18 of the helmet body 12.
  • the outer surface 100 of the brow portion 20 refers to the exterior surface of the shield 14 localized around the brow portion 20.
  • the outer surface 102 of the front portion 16 refers to the exterior surface of the helmet body 12 (e.g. the outer shell, etc.) localized around the region where the brow portion 20 of the shield 14 comes into contact with the helmet body 12.
  • the outer surface 104 of the ear portions 22 refers to the exterior surface of the shield 14 localized around the ear portion 22 or, more specifically, the exterior surface of the shield 14 near the rear of the shield 14.
  • the outer surface 106 of the tail portion 18 refers to the exterior surface of the helmet body 12 (e.g. the outer shell, etc.) localized around the region where the ear portion 22 of the shield 14 comes in contact with the helmet body 12.
  • FIG. 5B shows that the front portion 16 of the helmet can be formed by the outer shell and a front portion 16 of the energy absorbing layer disposed farther forward than the shield 14.
  • the shield 14 can be recessed with respect to the front-most part, or leading edge, of the helmet so that a portion of the outer shell and energy absorbing layer can overhang the shield 14.
  • FIGs. 6A and 6B illustrate cross-sectional views of the helmet user 80 wearing the helmet body 12 of FIG. 5A .
  • FIG. 6A shows a side view, which includes a maximum thickness 110 of the front portion 16, and a maximum thickness 112 of the tail portion 18.
  • FIG. 6B shows a front view that includes a representation of the average thickness 114 of the helmet body 12, discounting the contributions of the front portion 16 and the tail portion 18.
  • Helmet thickness as discussed herein, and in particular a thickness 110 of the front or brow portion 16 of the helmet body 12 and a thickness 112 of the tail portion 18, can be measured as the distance from the head of the helmet user 80 to the exterior of the helmet body 12. More specifically, the brow thickness 110 or the tail thickness 112 of the helmet 10, 30, 40, can be measured near the lowest part of the helmet as the distance that extends from the inner or interior surface of the helmet body 12, such as the inner surface 19b of the comfort liner 19 or the inner surface 13b of the impact liner 13, to the exterior or outer surface of the helmet body 12. Brow thickness 110 can be measured, for example, from the outer surface 13a of the impact liner 13 or the outer surface 11a of the outer shell 11 adjacent and above the wearer's eyes.
  • the thickness 110 may be made thicker than the thicknesses of other helmets previously used for cycling.
  • typical brow thicknesses for the energy absorbing materials of conventional helmets have been less than about 33 millimeters (mm) or less than 30 mm, and have typically comprised thicknesses in ranges of about 20-30 mm, or about 25 mm, when not including a thickness or distance of a shield 14 as part of the brow thickness.
  • 6A-B is thicker than conventional helmets, and can include a thickness greater than 33 mm, greater than 35 mm, greater than 40 mm, and may comprise a thickness in a range substantially equal to, or about, 33-50 mm, or about 40-50 mm, or about 45 mm or 48 mm.
  • the terms substantially equal to, or about include variation in thicknesses in a range of 0-5 mm, 0-3 mm, and 0-1 mm, according to various embodiments.
  • a helmet In order to pass impact testing in the brow portion 20, a helmet generally would need about 22 mm of energy absorbing material, like EPS foam, which is significantly less than the amount used in the helmets disclosed herein that can include about, or more than, twice the 22 mm of material.
  • the average thickness 114 of the helmet body 12 can be in a range of about 20-26 mm or about 22-24 mm.
  • the thickness 110 of the front or brow portion of the helmet body 12 can be about twice the thickness of the rest of the helmet, with the exception of the rear tear-drop shape.
  • many helmets have a thickened rear section with a ratio of up to 4 times the thickness of the rest of the helmet.
  • a brow thickness 110 of the helmet By increasing a brow thickness 110 of the helmet, while maintaining more conventional helmet thicknesses for other parts of the helmet, additional protections and aerodynamic performance can be achieved by the disclosed helmet. For example, by moving the brow portion 20 forward, or extending the outer surface of the helmet 10, 30, 40 (such as the outer surface 11a or 13a) farther from the head of the user 80, a first interaction of the helmet 10, 30, 40 with the air or wind occurs earlier temporally, or at a greater distance spatially, from the user 80, which produces better aerodynamics for all head fore, aft, and yaw angles.
  • the energy absorbing layer 13, including foam as an energy absorbent material can typically absorb more energy when more foam is present, but at some point the benefits from added foam do not outweigh the aerodynamic harm from too much bulk in front.
  • the more foam or energy absorbing material 13 thickness that is present in the helmet the better the helmet will perform in an impact test, but not necessarily better in an aerodynamic test.
  • the time trial helmet test results do indicate that impacts on the brow result in significantly lower accelerations than are present elsewhere on the helmet for improved helmet impact performance, while also providing improved aerodynamic performance.
  • the front portion 16 of the helmet body 12 may have a maximum thickness in a range of 40-50 mm.
  • the tail portion 18 of the helmet body 12 may have a maximum thickness greater than the maximum thickness 110 of the front portion 16.
  • the average thickness 114 of the portion of the helmet body 12 not included in either the front portion 16 or the tail portion 18 may be in a range of 20-26mm.
  • FIG. 7 depicts a perspective view of the bottom of the helmet body 12 of FIGs. 1-3 .
  • FIG. 7 shows a central and rear portion of an interior of the helmet that is configured to receive a head of the user.
  • FIG. 7 also shows that the inner surface of the front portion 16 of the helmet body 12 can include one or more interior channels 120 that align with the brow vents 24 to control or direct airflow into the helmet and around the head of the user.
  • An inner liner or comfort liner can be inserted into the interior of the helmet to improve helmet fit and to direct or channel airflow around a head of the user.
  • FIG. 8 depicts a top view of the helmet body 12 of FIGs. 1-3 .
  • FIG. 8 shows that the time trial helmet can be formed comprising a footprint or shape that includes a rounded leading edge 92 and a tapered or pointed trailing or lagging edge such that an overall form factor of the helmet can resemble a tear drop 130 or a seed.
  • FIGs. 9-10 depict a front and rear view of helmet 10 of FIG. 1 .
  • the figures show a number of bone or contour lines 28 along the exterior surface of the helmet, which begin at the front of the helmet and extend along the sides and top of the helmet to the rear of the helmet.
  • the helmet may comprise an optimized anterior or trailing edge portion that comprises a beak shape and prominent "bone" lines that may be formed on both left and right sides of the helmet and extend from the front of the helmet to the back of the helmet to contribute to the aerodynamic performance of the helmet.
  • the anterior portion of the helmet may be hollow at an interior of the helmet, such as when a thickness of the helmet body 12 (or the outer shell and the energy absorbing layer) are of a substantially uniform thickness, or range in thicknesses from 10-50 millimeters.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Helmets And Other Head Coverings (AREA)

Claims (11)

  1. Zeitfahr-Fahrradhelm (10), der Folgendes umfasst:
    einen Helmkörper (12), der einen vorderen Abschnitt und einen hinteren Abschnitt umfasst; und gekennzeichnet dadurch, dass er ferner Folgendes umfasst:
    einen Schutzschild (14), der zwei Ohrschutzabschnitte (22) umfasst, die angrenzend an den vorderen Abschnitt (16) durch einen Stirnabschnitt (20) des Helmkörpers miteinander verbunden sind;
    wobei der Schutzschild (14) mit dem Helmkörper lösbar gekoppelt ist; und
    wobei der Helmkörper (12) konfiguriert ist, um ein Abdecken der Ohren eines Trägers des Helmkörpers zu vermeiden, um einen Großteil des Ohrs mit Bezug zu dem Helmkörper freizulassen und wobei die Ohrschutzabschnitte konfiguriert sind, um sich an dem Helmkörper über die Ohren des Trägers zu erstrecken, wenn sie mit dem Helmkörper angrenzend an den vorderen Abschnitt verbunden sind.
  2. Helm nach Anspruch 1, der ferner Folgendes umfasst:
    wenigstens einen Körpermagneten (86); und
    wenigstens einen Schutzschildmagneten (26), der mit dem Schutzschild gekoppelt ist,
    wobei der wenigstens eine Körpermagnet innerhalb des Helmkörpers (12) eingeschlossen ist und
    wobei der wenigstens eine Körpermagnet und der wenigstens eine Schutzschildmagnet mit Bezug zueinander ausgerichtet sind, wenn der Schutzschild mit dem Helmkörper verbunden ist.
  3. Helm nach Anspruch 1,
    wobei der Schutzschild (14) mit dem Helmkörper (12) magnetisch gekoppelt ist und
    wobei der hintere Abschnitt konisch geformt ist und der vordere Abschnitt eine derart abgerundete Vorderkante aufweist, dass der Helmkörper einen Tropfenformfaktor aufweist.
  4. Helm nach Anspruch 1 oder 3, wobei eine Außenoberfläche des Stirnabschnitts (20) des Schutzschildes (14) mit Bezug zu einer Außenoberfläche des vorderen Abschnitts des Helmkörpers derart ausgespart ist, dass wenigstens ein Teil des Helmkörpers über den Stirnabschnitt des Schutzschildes übersteht und wobei beide Außenoberflächen der zwei Ohrabschnitte des Schutzschildes mit einer Außenoberfläche (106) des hinteren Abschnitts des Helmkörpers im Wesentlichen bündig sind.
  5. Helm nach Anspruch 3, der ferner Folgendes umfasst:
    wenigstens eine Vertiefung, die sich in einer Lippe des Helmkörpers befindet;
    wenigstens einen Körpermagneten (86), der innerhalb des Helmkörpers nahe der wenigstens einen Vertiefung eingeschlossen ist; und
    wenigstens einen Schutzschildmagneten (26), der mit dem Schutzschild gekoppelt und bemessen ist, um innerhalb der wenigstens eine Vertiefung zu passen;
    wobei der wenigstens eine Körpermagnet und der wenigstens eine Schutzschildmagnet mit Bezug zueinander ausgerichtet sind, wenn der Schutzschild mit dem Helmkörper verbunden ist.
  6. Helm nach Anspruch 1, wobei der
    Helmkörper mehrere Körpermagnete (86) umfasst; und
    der Schutzschild mehrere Schutzschildmagnete (26) umfasst;
    wobei der Schutzschild durch magnetische Anziehung zwischen den mehreren Körpermagneten und den mehreren Schutzschildmagneten mit dem Helmkörper lösbar gekoppelt ist.
  7. Helm nach Anspruch 6, wobei eine Außenoberfläche des Schutzschildes mit Bezug zu einer Außenfläche des vorderen Abschnitts des Helmkörpers ausgespart ist und wobei die Außenoberfläche des Schutzschildes mit einer Außenoberfläche (106) des hinteren Abschnitts des Helmkörpers im Wesentlichen bündig ist.
  8. Helm nach einem der vorhergehenden Ansprüche, der ferner eine Schutzschildentlüftung (24) an einer oberen Kante des Stirnabschnitts des Schutzschildes umfasst, die von einem entsprechenden Abschnitt des vorderen Abschnitts (16) des Helmkörpers getrennt ist, um eine Öffnung zwischen dem Stirnabschnitt des Schutzschildes und dem vorderen Abschnitt des Helmkörpers freizulassen, wenn der Schutzschild mit dem Helmkörper verbunden ist;
    wobei der Helmkörper wenigstens einen inneren Kanal umfasst, um Luft, die durch die wenigstens eine Stirnentlüftung strömt, in den Helm zu lenken.
  9. Helm nach einem der vorhergehenden Ansprüche, wobei der vordere Abschnitt (16) des Helmkörpers eine maximale Dicke in einem Bereich von 40-50 mm umfasst, wobei der hintere Abschnitt des Helmkörpers eine maximale Dicke aufweist, die über der maximalen Dicke des vorderen Abschnitts liegt und wobei die durchschnittliche Dicke des Abschnitts des Helmkörpers, der weder in dem vorderen Abschnitt noch in dem hinteren Abschnitt eingeschlossen ist, in einem Bereich von 20-26 mm liegt.
  10. Helm nach einem der vorhergehenden Ansprüche, wobei jeder Ohrabschnitt des Schutzschildes wenigstens eine Ohrentlüftung (32) umfasst, die sich durch den Ohrabschnitt des Schutzschildes erstreckt.
  11. Helm nach einem der vorhergehenden Ansprüche, wobei der Stirnabschnitt des Schutzschildes (14) einen Augenschutz umfasst, der sich von dem Stirnabschnitt nach unten erstreckt und konfiguriert ist, um wenigstens die Augen des Helmträgers zu bedecken.
EP16812643.1A 2015-06-18 2016-06-20 Fahrradhelm zum zeitfahren mit ohrschutz Active EP3310195B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21020230.5A EP3884797A1 (de) 2015-06-18 2016-06-20 Fahrradhelm zum zeitfahren mit ohrschutz

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562181377P 2015-06-18 2015-06-18
PCT/US2016/038432 WO2016205823A1 (en) 2015-06-18 2016-06-20 Time trial bicycle helmet with ear shield

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP21020230.5A Division EP3884797A1 (de) 2015-06-18 2016-06-20 Fahrradhelm zum zeitfahren mit ohrschutz

Publications (3)

Publication Number Publication Date
EP3310195A1 EP3310195A1 (de) 2018-04-25
EP3310195A4 EP3310195A4 (de) 2019-06-26
EP3310195B1 true EP3310195B1 (de) 2021-05-05

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EP21020230.5A Pending EP3884797A1 (de) 2015-06-18 2016-06-20 Fahrradhelm zum zeitfahren mit ohrschutz
EP16812643.1A Active EP3310195B1 (de) 2015-06-18 2016-06-20 Fahrradhelm zum zeitfahren mit ohrschutz

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CN (2) CN113170941B (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866978A (en) * 1957-02-21 1959-01-06 Whitney A Stuart Helmet with combined visor and ear-cheek shields
CN2061773U (zh) * 1989-12-29 1990-09-12 易晓 鼻耳镜
US5991930A (en) * 1998-05-07 1999-11-30 Sorrentino; James J. Protective helmet with attachable visor
CN2875123Y (zh) * 2006-03-24 2007-03-07 于海燕 烟花爆竹燃放保护面具
GB2451429B (en) * 2007-07-26 2012-10-24 Ruroc Sports Ltd Protective helmet
FR2978904B1 (fr) * 2011-08-08 2014-07-25 Remi Finiel Ensemble casque et masque de protection oculaire
CN203662095U (zh) * 2014-01-06 2014-06-25 佛山市南海永恒头盔制造有限公司 双层头盔
US10016007B2 (en) * 2014-03-07 2018-07-10 Bell Sports, Inc. Multi-body helmet construction and strap attachment method
CA2847771C (en) * 2014-03-28 2015-07-07 Louis Garneau Sports Inc. Bicycle helmet
CN104621831B (zh) * 2015-01-30 2017-05-31 东莞市信诺运动用品有限公司 护目镜可调头盔

Also Published As

Publication number Publication date
CN107847000B (zh) 2021-05-04
EP3310195A1 (de) 2018-04-25
CN113170941B (zh) 2024-03-19
EP3310195A4 (de) 2019-06-26
EP3884797A1 (de) 2021-09-29
CN107847000A (zh) 2018-03-27
CN113170941A (zh) 2021-07-27

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