JPH0827614A - Protective headgear - Google Patents

Abstract

PURPOSE:To provide a protective headgear (helmet) excellent in air permeability and ventilation. CONSTITUTION:The diameter of a disc 20A needs to be larger than that of a vent hole 12 because the disc 20A as a shield 20 is to prevent external falling or flying objects from intruding via the vent hole 12 to the inside of a headgear body 10, and the disc 20A also needs to have enough mechanical strength to block these intrusions. Legs 22 support the disc 20A and serve as a spacer forming a small gap 24 between the inner wall surface of the headgear body 10 and disc 20A. The length of the legs 22 is acceptable, provided that it preserves the gap 24 properly to secure air flow channel, and the outside air, as illustrated, flows between the inside of the headgear body 10 and the outside via both the vent hole 12 and gap 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a protective cap worn for head protection in construction, civil engineering and all other works.

[0002]

[Prior art and its problems] At various work sites or factories, workers wear protective caps on their heads to prevent the risk of objects coming in or falling, or the risk of falls. However, the protective cap causes the head to be steamed by a sweating action by wearing it for a long time, especially in summer or in a work in which the labor is heavy. As a result, not only are these operations uncomfortable, but the work efficiency is also reduced.

In an attempt to provide breathability to a protective cap, Japanese Utility Model Laid-Open No. 1-94430 discloses a helmet body having a required number of fixing holes, each of which has an umbrella portion and a shaft portion. By fixing the shaft portion of the poppet body, the poppet body is fixed with an appropriate gap between the lower surface of the umbrella portion and the outer surface of the helmet body, and the fixing hole covered by the umbrella portion is fixed. A helmet having a vent hole formed around it is disclosed.

However, in this helmet, sufficient ventilation cannot be ensured unless a large number of poppet bodies having a complicated shape are prepared, and in that case, the manufacturing process is complicated and the manufacturing cost is increased. It has the problem of being bulky. Further, since the umbrella part of the poppet body is projected from the helmet body to the outside, there is a risk that the poppet body will be caught by something during the work. To prevent this, a film is attached to the periphery of the umbrella part. Then, the structure becomes more complicated.

On the other hand, a helmet in which two layers and three layers are adhesively fitted is also known for the purpose of enhancing the impact resistance of the helmet. For example, as a helmet having a double wall structure made of a synthetic resin, in Japanese Utility Model Publication No. Sho 59-13218, a gap is provided between the outer skin and the inner skin, and the inner skin is partially projected to the outer skin side by a gentle convex curved surface. It is known that the inner surface of the outer skin is welded to the abdomen.

[0006] However, the present invention hardly considers the air permeability, and only perforates the air holes in the welded portion between the outer skin and the inner skin. Therefore, a fallen object may enter through the vent hole, and the original purpose of the helmet to protect the head from the fallen object cannot be sufficiently achieved.

Further, there is also known a light work cap in which ventilation is taken into consideration by providing ventilation holes at the top or side surface of a synthetic resin cap body. However, this work cap is used instead of the cloth cap, and cannot be used as the protective cap in terms of safety.

[0008]

OBJECT OF THE INVENTION An object of the present invention is to provide a protective cap (helmet) having excellent breathability and ventilation.

[0009]

The protective cap of the present invention is characterized in that a shield body for blocking the vent holes is provided inside a cap body having a large number of vent holes. In particular, it is preferable to install a shield having a diameter larger than that of the ventilation hole so as to face the ventilation hole.

[0010]

The above-mentioned shield prevents falling objects, flying objects and the like from entering the inside of the cap body from the outside of the cap body through the ventilation holes. Further, since the shield body is installed with a predetermined gap with respect to the ventilation hole formed in the cap body, outside air circulates inside and outside the cap body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a protective cap according to the present invention will be described below with reference to the drawings.

FIG. 2 shows an overall side view of the protective cap,
Ventilation holes 12 are scattered substantially uniformly over the entire cap body 10 constituting the main body. As the material of the cap body 10,
Synthetic resins such as polyester, polypropylene, polyethylene, polycarbonate and ABS resin can be used. In addition, in the same drawing, illustration of the chin strap for preventing falling, which is usually provided as a protective cap, is omitted.

FIG. 1 is a sectional view showing the cap body 10 with a part thereof cut away. The cap body 10 is provided with a large number of vent holes 12 penetrating the inner and outer peripheral surfaces thereof. The arrangement of the vent holes 12 may be regular as shown, or irregular. The size of the vent hole 12 is not particularly limited as long as the strength of the cap body 10 can be maintained. The shape of the ventilation hole 12 is not limited to the circular shape as in the embodiment, and may be an elliptical shape or a polygonal shape.

Reference numeral 20 denotes a shield installed inside the cap body 10 so as to face the vent hole 12. In the present embodiment, the shield 20 is a disc 20A having a diameter larger than that of the vent hole 12.
So as to cover the ventilation hole 12 and two to several legs 22
Is fixed to the inner wall surface of the cap body 10.

The disc 20A is for preventing falling objects, flying objects, etc. from the outside of the cap body 10 through the ventilation hole 12 and entering the inside of the cap body 10. It is necessary that the diameter is larger than the diameter of 12, and it is also necessary to have a strength that can prevent these invasions. As the material of the disc 20A, for example, one having the same strength as the cap body 10 can be used.

The legs 22 support the disc 20A and also serve as a spacer for forming a slight gap 24 between the inner wall surface of the cap body 10 and the disc 20A. Thus, the length of the leg portion 22 may be any length as long as the gap 24 can be appropriately held and the air passage can be secured. That is, in this embodiment, the outside air flows between the inside and the outside of the cap body 10 through the ventilation hole 12 and the gap 24 as shown by the arrow in FIG.

FIG. 3 is a cross-sectional view showing another preferred embodiment of the protective cap, in which a dish-shaped disk 20B is attached to the inner wall of the cap body 10 so as to cover the ventilation hole 12, and the shield 20 is provided. Are configured. Unlike the embodiment shown in FIG. 1, in this embodiment, the shield 20 or the disc 20B is directly fixed to the inner wall of the cap body 10. As shown in FIG. 4, the disc 20B is provided with a plurality of small holes 26 in a circumferential shape at the peripheral edge thereof.
The outside air flows between the inside and the outside of the cap body 10 through the small holes 26.

In FIGS. 1 and 3, the so-called wearing body and shock absorbing liner, which are usually mounted inside the cap body 10, are not shown, but the function of these wearing body and shock absorbing liner causes the hat body to function. The shock applied from the outside to 10 is further alleviated. Therefore, the shield 20 provided inside the cap body 10 does not directly contact the head.

Regarding the protective cap of this embodiment, the standard defined by the Minister of Labor (Ministry of Labor Notification No. 3 dated June 5, 1991).
When a penetration resistance test (Articles 6 and 7) and an impact absorption test (Article 8) according to No. 9) were conducted, the performance prescribed in the same article was obtained.

[0020]

INDUSTRIAL APPLICABILITY The protective cap of the present invention has excellent breathability and ventilation even though it has a simple structure.
It can be widely used in civil engineering, all other work, various work sites and factories.

Further, in the present invention, since the shield for covering the ventilation hole is provided inside the cap body, there is no fear that the shield will be caught by anything, and not only the safety as a protective cap is high. It also has the effect that it looks good in appearance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a notched main part of a protective cap according to the present invention.

FIG. 2 is an overall side view of a protective cap.

FIG. 3 is a sectional view of an essential part showing another preferred embodiment of the protective cap.

FIG. 4 is a front view of a disk serving as a shield.

[Explanation of symbols]

 10 Hat Body 12 Vent Hole 20 Shield 20A Disc 20B Disc 22 Leg 24 Gap 26 Small Hole

Claims (2)

[Claims] 1. A protective cap comprising: a cap body having a large number of ventilation holes provided therein with a shield for blocking the ventilation holes. 2. The protective cap according to claim 1, wherein a shield having a diameter larger than that of the ventilation hole is installed facing the ventilation hole.