JPH0116743Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention is a helmet used mainly for motorcycle operators, and in particular, a helmet that opens and closes a window on the front wall of the helmet. This invention relates to a helmet that pivotally supports a transparent shield plate.

(2) Prior Art Generally, when this type of helmet is used with the window closed by the shield plate, the inner surface of the shield plate becomes foggy due to the breath of the wearer, which may impair visibility.

In order to avoid such inconveniences, it has already been proposed that an exhalation guiding wall is provided protruding from the inner wall of the cap to prevent the wearer's exhaled air from flowing toward the window.

However, even with such a device, a gap may be created between the wearer's face and the exhalation guide wall due to individual differences between the wearers, and the wearer's exhaled air may leak toward the window and fog it.

(3) Problems to be solved by the invention The present invention was developed in view of the above circumstances, and aims to effectively ventilate the inside of the helmet by utilizing the wind that the helmet receives from the front. It is an object of the present invention to provide the above-mentioned helmet which can prevent the inner surface of the shield plate from fogging.

B. Structure of the invention (1) Means for solving the problem In order to achieve the above object, the present invention provides a structure in which, when the window is closed with a shield plate,
A sealing material with a flexible lip that elastically adheres to the inner surface of the shield plate is attached to the upper end of the shield plate, and when the wind blows from the front of the helmet, a part of the lip is bent and the seal material is attached to the inner surface of the shield plate. It is characterized by a negative pressure generating plate that generates negative pressure inside to separate it from the body.

(2) Effect When the helmet is exposed to wind from the front when the window is closed with the shield plate, the lip of the sealing member is separated from the inner surface of the shield plate due to the negative pressure generated inside the negative pressure generating plate, causing damage inside the helmet. of air is sucked out through the window.

(3) Embodiment An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 shows a full-face helmet, and the helmet body 2 includes a hard, high-strength shell 3 and a buffer fitted on the inner surface of the shell 3. It is composed of a liner 4.

A window 5 is bored in the front wall of the cap body 2, and a transparent shield plate 6 for opening and closing the window 5 is pivotally supported 8 on the left and right outer surfaces of the shell 3.

An annular sealing member 7 formed from an elastic material such as rubber is fitted and adhered to the shell 3 along the periphery of the window 5, and the sealing member 7 has a seal body 7a that fits around the periphery of the window 5. and its seal body 7a
a flexible lip 7b protruding outward from the inner peripheral edge of the
It's getting more and more familiar. And the lip 7b is
When the window 5 is closed with the shield plate 6, it elastically adheres to the inner surface of the shield plate 6, and when the outside receives negative pressure of a certain value or more, it bends outward and separates from the inner surface of the shield plate 6. ing.

On the other hand, a negative pressure generating plate 9 is connected to the upper end of the shield plate 6 and extends upward along the outer surface of the cap body 2, and there is a gap between the inner surface of the negative pressure generating plate 9 and the outer surface of the cap body 2. A ventilation gap 10 is defined.

Although the negative pressure generating plate 9 is integrally molded with the shield plate 6 in the illustrated example, it may be fixed to the shield plate 6 by riveting, adhesive, or the like.

Next, to explain the operation of this embodiment, when the shield plate 6 is lowered and the window 5 is closed as shown in FIG. The lip 7b of 7 elastically comes into close contact with the window 5 to prevent rain and dust from entering the window 5.

Next, for example, when an operator of a motorcycle uses the helmet 1 in the state shown in FIG.
and flows on the outer surface of the cap body 2, and the air in the ventilation gap 10 is sucked by the flow, so that a negative pressure is generated in the ventilation gap 10. The negative pressure acts on the outer surface of the lip 7b of the seal member 7 facing the ventilation gap 10, so when the suction force due to the negative pressure becomes greater than the elastic closing force of the lip 7b, as shown in FIG. , the lip 7b is bent and separated from the inner surface of the shield plate 6. As a result, the window 5 and the ventilation gap 10 are communicated with each other, and the air inside the cap body 2 is
As shown by arrow B in the figure, fresh air is sucked out from the window 5 into the ventilation gap 10, and along with this, fresh air is introduced into the cap body 2 from below.

In this way, the inside of the cap body 2 is ventilated, and especially when the air inside the cap body 2 flows out through the window 5, the shield plate 6
Since an air flow is generated along the inner surface of the shield plate 6, fogging of the inner surface of the shield plate 6 can be effectively prevented.

C. Effects of the invention As described above, according to the invention, a sealing member equipped with a flexible lip that elastically adheres to the inner surface of the shield plate when the window is closed with the shield plate is attached to the peripheral edge of the window. In addition, a negative pressure generating plate is attached to the upper end of the shield plate, which generates negative pressure inside which deflects a part of the lip and separates it from the inner surface of the shield plate when it receives wind from the front of the helmet. Even if the window is closed with a shield plate, if the helmet receives wind from the front, the negative pressure generated inside the negative pressure generating plate will cause the lip of the sealing member to separate from the inner surface of the shield plate, allowing ventilation inside the helmet to pass through the window. This prevents the inner surface of the shield plate from fogging up and provides good visibility at all times. Moreover, since the lip is usually in close contact with the inner surface of the shield plate due to its own elasticity, it can reliably prevent rain and dust from entering.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the helmet of the present invention, FIG. 2 is an enlarged vertical sectional side view of the main part of FIG. 1, and FIG. 3 corresponds to FIG. 2. It is an operation diagram. DESCRIPTION OF SYMBOLS 1... Helmet, 2... Cap body, 5... Window, 6... Shield plate, 7... Seal member, 7a... Seal body, 7
b...Rip, 9...Negative pressure generation plate.

Claims (1)

[Scope of utility model registration request] In a helmet in which a transparent shield plate for opening and closing a window on the front wall of the cap body is pivotally supported on the cap body, the periphery of the window is elastically attached to the inner surface of the shield plate when the window is closed with the shield plate. A sealing member with a flexible lip that adheres tightly is attached, and a negative pressure is applied to the inside of the upper end of the shield plate, which bends a part of the lip and separates it from the inner surface of the shield plate when it receives wind from the front of the helmet. A helmet characterized by having a negative pressure generating plate connected in series.