Helmet with chin crush zone and integrated ventilation

Abstract

A chin-bar for a helmet with a crumple zone and an integrated air-flow system formed from passages running internally from the bottom to the top of the chin-bar. A scoop at the bottom of the chin-bar controls air flow. Diffusers at the top provide de-misting and fresh air to the rider.

Claims

1. A chin-bar for a helmet with a visor, said chin-bar comprising: a body having a wall with a top and a bottom, wherein the body includes vertical passageways extending from an opening defined in the bottom of the wall of the body to an opening defined in the top of the wall of the body, wherein the chin-bar is adapted to be located below the visor and to cover a chin of a person wearing the helmet; and wherein the passageways are adapted to provide ventilation to the visor on the helmet.

2. The chin-bar as in claim 1, wherein the passageways form a crumple zone.

3. A chin-bar for a helmet with a visor, said chin-bar comprising: a body having a wall with a top and a bottom, wherein the body includes vertical passageways extending from an opening defined in the bottom of the wall of the body to an opening defined in the top of the wall of the body, wherein the chin-bar is adapted to be located below the visor and to cover a chin of a person wearing the helmet; and wherein the passageways are adapted to provide ventilation to the visor on the helmet, and wherein the bottom comprises a vent to controllably restrict airflow to the passageways.

4. A chin-bar for a helmet with a visor, said chin-bar comprising: a body having a wall with a top and a bottom, wherein the body includes vertical passageways extending from an opening defined in the bottom of the wall of the body to an opening defined in the top of the wall of the body, wherein the chin-bar is adapted to be located below the visor and to cover a chin of a person wearing the helmet; and wherein the passageways are adapted to provide ventilation to the visor on the helmet, and wherein the top comprises at least one diffuser disposed above the passageways.

5. A chin-bar for a helmet with a visor, said chin-bar comprising: a body having a wall with a top and a bottom, wherein the body includes vertical passageways extending from an opening defined in the bottom of the wall of the body to an opening defined in the top of the wall of the body, wherein the chin-bar is adapted to be located below the visor and to cover a chin of a person wearing the helmet; and wherein the passageways are adapted to provide ventilation to the visor on the helmet, wherein the passageways form a crumple zone, and wherein the passageways are disposed in a tessellated pattern.

6. The chin-bar as in claim 5, wherein the passageways are hexagonal in cross section.

7. A helmet comprising: a helmet body; a visor provided on the helmet body; a chin-bar engaged with the helmet body in a location vertically below the visor; said chin-bar including a chin-bar body having a wall with a top and a bottom, wherein the chin-bar body includes vertical passageways extending from an opening defined in the bottom of the wall of the chin-bar body to an opening defined in the top of the wall of the chin-bar body; and wherein the chin-bar is adapted to protect a chin of a person wearing the helmet, and wherein the passageways in the chin-bar body provide ventilation to the visor.

8. The helmet as in claim 7, wherein the passageways form a crumple zone.

9. The helmet as in claim 8, wherein the passageways are disposed in a tessellated pattern.

10. The helmet as in claim 9, wherein the passageways are hexagonal in cross section.

11. The helmet as in claim 7, wherein the bottom comprises a vent to controllably restrict airflow to the passageways.

12. The helmet as in claim 7, wherein the top comprises at least one diffuser disposed above the passageways.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way. The Detailed Description will make reference to a number of drawings as follows.

(2) FIG. 1 shows a front perspective view of a chin-bar incorporating the present invention.

(3) FIG. 2 shows an exploded view of the chin-bar.

(4) FIG. 3 shows a perspective view of the chin-bar from blow with the bottom vent open.

(5) FIG. 4 shows a cutaway view of the chin-bar.

(6) FIG. 5 shows a partial cross-sectional, side elevation view of a helmet on a head of a rider and showing the chin bar in accordance with FIGS. 1 to 4.

DRAWING COMPONENTS

(7) The drawings include the following integers. 10 chin-bar 20 body 22 core 24 cells 26 inner shell 28 outer shell 30 bottom (of chin-bar) 32 vent 34 handle 36 chamber 38 outlet apertures 40 top (of chin-bar) 42 diffuser 44 inlet apertures 46 visor 48 helmet

DETAILED DESCRIPTION OF THE INVENTION

(8) The following detailed description of the invention refers to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the following description to refer to the same and like parts. Dimensions of certain parts shown in the drawings may have been modified and/or exaggerated for the purposes of clarity or illustration.

(9) The present invention provides a crumple zone for a chin-bar of a helmet 48 (FIG. 5) that incorporates vertical passageways that allow air to pass up through the chin-bar to provide ventilation for the visor 46 without compromising the design integrity of the helmet 48. The chin-bar can be manufactured as a separate or fully-integrated component, to better maintain the strength of the chin-bar and better absorb and dissipate energy resulting from low-speed impacts with the chin-bar to improve protection for the rider. The hexagonal or tri-hexagonal crumple zone will afford improved and multi-directional energy management in the event of an impact with the chin-bar. The invention's air-flow system helps to de-mist a full-face helmet visor 46 and provide sufficient oxygen flow to the rider without interrupting the design integrity of the crumple zone inside the chin-bar.

(10) An external view of a chin-bar 10 incorporating the invention is shown as 10 in FIG. 1. The chin-bar appears similar to conventional chin-bars, but includes a hinged bottom vent 32 on the bottom 30 of the chin-bar to controllably admit air, and diffusers 42 on the top 40 of the chin-bar to direct airflow onto the inside surface of a visor 46 and onto a rider's face. The bottom vent 32 includes a tab/handle 34 to aid in manipulation of the vent opening and thus air flow. Notably the outer shell 28 of the chin-bar is not compromised by holes.

(11) FIG. 2 shows an exploded view of the chin-bar 10 which can be seen to comprise three main components, body 20, bottom 30 and top 40. Internal details of the chin-bar are best appreciated with the cutaway view of FIG. 4. The body 20 comprises a core 22 between an inner shell 26 and an outer shell 28. The inner and outer shells can be made as per conventional helmets from materials such as fibreglass moulds, fibreglass/carbon-fibre/Kevlar/aramid composite moulds, or poly-carbonate or other plastic-based helmet moulds. The core 22 can also be made from a variety of materials such as fibreglass plastic, carbon-fibre, aluminium alloy and other alloys, plastics, nylons, synthetics, and urethanes and may be manufactured as a discrete unit to allow for easy replacement or fully integrated with the inner and outer shells. The core includes an array of vertical cells/passageways 24 that provide an energy absorbing crumple zone as well as a path for air to flow through the body. The cells 24 are preferably tessellated and may be a honeycomb as shown, tri-hexagonal pattern or various other cross sections. The bottom section 30 includes a single hinged intake scoop 32 (shown open in FIG. 3) located at centre/front section of the bottom that directs air via chamber 36 up through outlet apertures 38 and into the bottom of cells 24. The airflow exits the top of the cells 24 and through inlet apertures 44 of the diffusers 42 from where it is directed over the inside surface of a visor 46 of a helmet 48 for de-misting and over the riders face.

(12) The reader will now appreciate the present invention which provides a chin-bar with a crumple zone and an integrated air-flow system that provides adequate oxygen flow to the rider and face port without compromising the structural integrity of the crumple zone as with conventional air-flow ports. By using the crumple zone cells to channel the air flow to the helmet face port, there is no requirement to cut into the upper section of the crumple zone and outer chin-bar to install conventionally mounted air vents. The diffusers optimise both de-misting of the visor 46 and general aeration for the rider. The honeycomb pattern or tri-hexagonal pattern crumple zone affords multi-directional impact loading and deformation to better manage forces in low-speed collisions with the chin-bar. The honeycomb pattern crumple zone deformation rate can be tuned for different helmet users, adults and children, and for different environments; on-road motorcycling, off-road motorcycling/bicycling, motorcycle road racing, motocross, Supercross, enduro and rally; as well as motorsports, snow sports, cricket and horse riding/racing.

(13) Further advantages and improvements may very well be made to the present invention without deviating from its scope. Although the invention has been shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices and apparatus. Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of the common general knowledge in this field.

(14) In the present specification and claims (if any), the word “comprising” and its derivatives including “comprises” and “comprise” include each of the stated integers but does not exclude the inclusion of one or more further integers.