JPH07278935A - Protective cap - Google Patents

Abstract

PURPOSE:To obtain a protective cap having a good aeration and ventilation. CONSTITUTION:Outside air is flowed to the inside and outside of a cap portion 10 by making the inside of an inner layer 10A of the cap portion 10 communicate with the outside of an outer layer 10B through ventilation holes 20A, a gap 12 and ventilation holes 20B. However, since the ventilation holes 20A and 20B of both layers 10A and 10B are constructed not to overlap each other, a falling substance or flying material can not penetrate into the inside of the cap portion 10. Spacers 14 arranged at proper positions within the gap 12, are fulfilling a role of fixing the previously mentioned inner layer 10A and outer layer 10B as one piece and at the same time holding the gap 12 properly to secure an air flow route.

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 air permeability cannot be ensured unless a large number of intricate poppet bodies are prepared, and in that case, the manufacturing process becomes complicated and the manufacturing cost increases. Have a point.

On the other hand, there is also known a helmet in which two layers and three layers are adhesively fitted 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.

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 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.

[0007]

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

[0008]

The protective cap of the present invention comprises a cap body having a gap between an inner layer and an outer layer, and a large number of vent holes are formed in the inner layer and the outer layer, respectively. The vent holes are formed so as to be offset from each other.

It is preferable to interpose a spacer in the gap.

[0010]

Since the inside of the inner layer and the outside of the outer layer forming the cap body communicate with each other through the ventilation holes of both layers and the gap, the outside air flows inside and outside the cap body. However, since the vent holes of both layers are configured not to overlap with each other, a falling object or a flying object does not enter the inside of the cap body from the outside.

The spacer plays a role of integrally connecting the inner layer and the outer layer, and properly holds the gap to secure an air passage.

[0012]

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 20 are scattered substantially uniformly over the entire cap body 10. In the figure, the fall-prevention chin strap that is usually provided as a protective cap is not shown. As the material of the cap body 10, synthetic resin such as polyester, polypropylene, polyethylene, polycarbonate, ABS resin can be used.

FIG. 3 is a sectional view showing the cap body 10 with a part cut away, and FIG. 1 is a partially enlarged view of the main part thereof. The cap body 10 is composed of two layers, an inner layer 10A and an outer layer 10B, and a gap 12 is provided between both layers. In this embodiment, the thickness of the gap 12 is substantially equal in any part of the cap body 10. As described below,
In the present invention, the gap 12 mainly functions as a flow passage for air, so that a space through which air can flow may be secured. Therefore, the thickness of the gap 12 is 1 to 20 m.
It is preferably about m, particularly about 3 to 10 mm.

A large number of vent holes 20A and 20B are formed in the inner layer 10A and the outer layer 10B. Vents 20A, 2
0B is formed substantially uniformly over the entire inner layer 10A and outer layer 10B, and the vent holes 20A and vent holes 20B are formed so as to be offset from each other. In the present invention, the vent hole 20A and the vent hole 20B are configured so as not to overlap with each other. A falling object, a flying object, or the like is passed from the outside of the cap body 10 through the vent hole 20A, the gap 12, and the vent hole 20B. This is to prevent the cap body 10 from entering the inside.

In the present invention, the inside of the inner layer 10A and the outside of the outer layer 10B communicate with each other through the vent hole 20A, the gap 12 and the vent hole 20B. Circulates between the inside and outside.

Since the ventilation holes 20A and 20B have the above-mentioned functions, the arrangement may be regular or irregular. Further, the size of the vent holes 20A and 20B is not particularly limited as long as the size of the cap body 10 can be maintained. On the other hand, the larger the diameter of the ventilation holes 20A and 20B, the more the weight of the cap body 10 can be reduced.

The shape of the vent holes 20A and 20B is not limited to the circular shape as in the embodiment, but may be an elliptical shape or a polygonal shape. Furthermore, the inner layer 10A and / or the outer layer 1 of the cap body 10
By forming the mesh structure of 0B, the vent hole 2 is formed in the cap body 10.
0A and the vent hole 20B may be formed. Of course, vent 2
The size and shape of 0A and the vent hole 20B may be different from each other.

Reference numeral 14 is a spacer provided at an appropriate portion of the gap 12, which plays a role of integrally connecting the inner layer 10A and the outer layer 10B, and properly holds the gap 12 to secure an air passage. It is a thing. Further, the spacer 14 has a role of transmitting the impact applied to the outer layer 10B to the inner layer 10A to disperse the impact force. Therefore, the spacers 14 are spotted in the gaps 12, or
Alternatively, it is desirable that the cap body 10 is provided in a circular shape centering on the top.

In the present invention, the gap 12 may be provided with a cushioning material such as expanded polystyrene or various sponges. However, it is necessary to adopt a shape or method that does not impair the air permeability and ventilation. It should be noted that, in FIGS. 1 and 3, a so-called wearing body or a shock absorbing liner, which is attached to the inside of the cap body 10 for absorbing a shock applied to the cap body 10, is not shown.

The cap body 10 of the present invention can be formed by joining the inner layer 10A and the outer layer 10B, which have the vent holes 20A and the vent holes 20B, joined to each other. It can be manufactured by an appropriate molding method such as molding using a pair of molds.

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.

[0023]

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.

In addition, since the present invention has a double-layered cap body, it has high strength, excellent impact resistance, high safety as a protective cap, and is lightweight due to the installation of ventilation holes. Also has

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a 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 cross-sectional view showing a notched part of a cap body.

[Explanation of symbols]

 10 Cap Body 10A Inner Layer 10B Outer Layer 12 Gap 14 Spacer 20 (20A, 20B) Vent

Claims (2)

[Claims] 1. A cap body having a gap between an inner layer and an outer layer, wherein a plurality of vent holes are formed in each of the inner layer and the outer layer, and the vent holes of the inner layer and the vent holes of the outer layer are mutually A protective cap characterized by being formed in a shifted manner. 2. The protective cap according to claim 1, wherein a spacer is interposed in the gap.