GB2307842A - Ventilated protective helmet - Google Patents

Abstract

A protective helmet includes a body portion 10 formed at a top thereof with a first hole and having a hood 20 extending outwardly from the top of the body portion to form a passage 21 communication with the first hole, an intermediate layer 30 fitted on the inner surface of the body portion having a second hole 31 communicating with the first hole of the body portion and a plurality of first grooves 32 extending radially from the second hole, a foamed rubber layer 40 adhered to the intermediate layer and formed with a plurality of raised portions 41 and second grooves 42 which communicate with the first grooves, and a cloth lining 50 adhered on the foamed rubber layer.

Description

TITLE: A VENTILATION PROTECTIVE HELMET This invention relates to an improved ventilation protective helmet.

It has been found that the conventional protective helmet is provided with a layer of polyurethane on its inner surface, a layer of foamed rubber adhered on the polyurethane, and a cloth lining adhered on the foamed rubber, which prevent the heat evolved from the user's head from being cooled by outside air. Hence, it will make the user feel very uncomfortable and reluctant to wear the protective helmet thereby causing lethal danger to his life in case of accident.

Therefore, it is an object of the present invention to provide a protective helmet which can obviate and mitigate the above-mentioned drawbacks.

This invention relates to a ventilation protective helmet.

It is the primary object of the present invention to provide a ventilation protective helmet which can cause air to move therethrough.

It is another object of the present invention to provide a ventilation protective helmet which can effectively cool the head of a user.

It *is still another object of the present invention to provide a ventilation protective helmet which is simple in construction.

It is still another object of the present invention to provide a ventilation protective helmet which is easy to manufacture.

It is a further object of the present invention to provide a ventilation protective helmet which is low in cost.

Other objects of the invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists of features of constructions and method, combination of elements, arrangement of parts and steps of the method which will be exemplified in the constructions and method hereinafter disclosed, the scope of the application of which will be indicated in the claims following.

FIG. 1 is a cutaway view of a ventilation protective helmet according to the present invention; FIG. 2 is a sectional view of the ventilation protective helmet; FIG. 3 is a bottom view of the ventilation protective helmet; FIG. 4A is a bottom plan view of the intermediate layer; FIG. 4B is a sectional view of the intermediate layer; FIG. 4C is a top view of the intermediate layer; FIG. 5 illustrates the structure of the inner wall of the ventilation protective helmet; FIG. 6 is a side view of the ventilation protective helmet; FIG. 7 is a top view of the ventilation protective helmet; and FIG. 8 is a rear view of the ventilation protective helmet.

For the purpose to promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings. Specific language will be used to describe same. It will, nevertheless, be understood that no limitation of the scope of the invention is thereby intended, such alternations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated herein being contemplated as would normally occur to one skilled in the art to which the invention relates.

With reference to the drawings and in particular to FIGS. 1 through 3, the ventilation protective helmet according to the present invention mainly comprises a body portion 10, a hood 20, an intermediate layer 30, a foamed rubber layer 40, and a cloth lining 50.

The body portion 10 is an one piece, injection-molded member made of polychloroprene. The top of the body portion 10 is formed with a hole.

The hood 20 is formed integrally with the top of the body portion 10 and extends outwardly therefrom.

The hood 20 has a ventilating passage 21 formed with an outlet 22 at the end and communicating with the hole of the body portion 10. A reinforced web 23 is provided at the intermediate portion of the bottom of the hood 20.

Both sides of the body portion 10 of the ventilation protective helmet are provided with two elongated openings 71 for the passage of air and sound (see FIGS. 1, 2, 6, 7 and 8) above which there is a shelter 70 for preventing rain from flowing into the helmet.

The intermediate layer 30 (see FIG. 4) is made of foamed polystyrene which is fitted on the inner wall of the ventilation protective helmet. The intermediate layer 30 has a hole 31 and a plurality of grooves 32 radially extending from the hole 31. The top of the intermediate layer 30 is formed with a shoulder 33 and a flange 34 for preventing rain water from flowing into the hole 31.

The foamed rubber layer 40 is fixed onto the intermediate layer 30 by heating and the cloth lining 50 is adhered on the foamed rubber layer 40. As the foamed rubber layer 40 is adhered onto the intermediate layer 40 by heating, a plurality of raised portions 41 are formed on the inner surface of the intermediate layer. Between every two of the raised portions 41 there is a groove 42 which is just located under corresponding groove 32 of the intermediate layer 30. Further, the groove 42 is formed with a plurality of perforations 43 communicating with the respective groove 32 of the intermediate layer 30.

Referring to FIGS. 2, 3 and 5, the inner cover composed of the foamed rubber layer 40 and the lining cloth 50 are divided into a first piece C and two second pieces D wherein both ends of the first piece C are mounted under the an inner end of the two second pieces D.

When a motorcycle rider has worn a ventilation protective helmet according to the present invention (see FIG. 2), an air current A will flow into the ventilation protective helmet through the elongated openings 71 at its both sides and a ventilation hole 44 at its lower edge.

Then the air current A will flow into the grooves 42 through the perforations 43 thereby cooling the head of the user. Thereafter, the air current A will pass through the hole 31 of the intermediate layer 30 via the inner and outer grooves 42 and 32. Finally, the air current will flow out of the ventilation protective helmet through the outlet 22 of the passage 21.

The invention is naturally not limited in any sense to the particular features specified in the forgoing or to the details of the particular embodiment which has been chosen in order to illustrate the invention.

Consideration can be given to all kinds of variants of the particular embodiment' which has been described by way of example and of its constituent elements without thereby departing from the scope of the invention. This invention accordingly includes all the means constituting technical equivalents of the means described as well as their combinations.

Claims (3)

CLAIMS:

1. A protective helmet comprising: a body portion formed at a top thereof with a first hole and having a hood extending outwardly from the top of said body portion thereby forming a passage communicating with said first hole, said body portion being formed with at both sides with a rain shelter and two ventilation openings under said rain shelter; an intermediate layer fitted on an inner surface of said body portion having a second hole communicating with said first hole of said body portion and a plurality of first grooves extending radially from said second hole; a foamed rubber layer adhered to said intermediate layer and formed with a plurality of raised portions and second grooves which communicate with said first grooves, said foamed rubber layer further having an air inlet communicating with said first grooves; and a cloth lining adhered on said foamed rubber layer.

2. The protective helmet as claimed in Claim 1, wherein said ventilation openings are elongate in shaped.

3. The protective helmet as claimed in Claim 1, wherein said first hole is aligned with said second hole.