WO1995028101A1

WO1995028101A1 - Safety cap

Info

Publication number: WO1995028101A1
Application number: PCT/JP1995/000711
Authority: WO
Inventors: Syoji Shirai
Original assignee: Sea Raise Corporation Co., Ltd.
Priority date: 1994-04-14
Filing date: 1995-04-12
Publication date: 1995-10-26
Also published as: AU2223395A; TW359966U

Abstract

A safety cap excellent in ventilation. The cap comprises a cap body provided with a gap between an inner layer and an outer layer, on which respective layers are formed a multiplicity of vent holes such that the vent holes on the inner layer and the vent holes on the outer layer are formed to be staggered relative to one another. It is preferable to insert spacers into the gap. Since an interior of the inner layer and an outside of the outer layer which constitute the cap body communicate with each other through the vent holes in the both layers and the gap, an outside air flows between the inside and outside of the cap body. However, the vent holes of the both layers are arranged not to overlap one another, so that falling articles and flying articles will not enter the cap body from the outside.

Description

Specification

Title of the invention Protective cap Technical field

TECHNICAL FIELD The present invention relates to a structure of a protective cap worn for protection of a head in construction, civil engineering, and all other operations. Background art

At various work sites and factories, workers wear protective caps on their heads to prevent the danger of flying or falling objects, or to prevent the danger of falling. Protective caps, especially in summer or heavy workload, can cause the head to sweat and sweat during prolonged wear. As a result, these operations are not only unpleasant, but also reduce the work efficiency.

As an attempt to impart ventilation to the protective cap, Japanese Utility Model Publication No. 1944/1991 discloses that the helmet body is provided with a required number of fixing holes, By fixing the shaft portion of the port body including the umbrella portion and the shaft portion to the hole, the port body is appropriately interposed between the lower surface of the umbrella portion and the outer surface of the helmet body. There is disclosed a helmet which is fixed in a state in which the ventilation hole is formed around the fixing hole covered by the umbrella portion.

However, in this hermet, sufficient ventilation cannot be ensured unless a large number of complicatedly shaped port bodies are prepared. In this case, the manufacturing process becomes complicated and There is a problem that the manufacturing cost increases. Also, the umbrella portion of the pot body is a helmet. Since it protrudes outside from the main body, there is a risk that the port body may be caught by something during the work.To prevent this, if a film is attached to the periphery of the umbrella, Further, the structure is complicated.

On the other hand, there is also known a helmet in which two or three layers are tightly fitted to improve the impact resistance of the helmet. For example, as a helmet with a double-wall structure made of synthetic resin, Japanese Utility Model Publication No. 13-218, 1980, published a Japanese publication, entitled, It is well known that the inner surface of the outer skin is welded to the inner surface of the outer skin by projecting the outer skin side with a gentle convex curved surface. However, in the present invention, little consideration is given to air permeability, and only a vent hole is formed in the welded portion between the outer skin and the inner skin. Therefore, a falling object may enter through the ventilation hole, and the original purpose of the helmet, which is to protect the head from the falling object, cannot be sufficiently achieved.

Further, there is also known a light work cap in which ventilation is provided by providing a ventilation hole at the top or side of a synthetic resin cap body. However, this work cap is used in place of a cloth cap, and cannot be used as a protective cap to be worn for head protection in terms of safety. Disclosure of the invention

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

The protective cap of the present invention comprises a cap body having a gap between an inner layer and an outer layer, wherein the inner layer and the outer layer each have a large number of ventilation holes, and the inner layer ventilation hole and the outer layer ventilation hole are It is noted that It is a sign. It is preferable that a spacer is interposed in the gap.

Since the inside of the inner layer and the outside of the outer layer that constitute the cap body communicate with each other through the air holes and the gap in both layers, the outside air flows inside and outside the cap body. However, since the ventilation holes of both layers do not overlap, falling or flying objects do not enter the inside of the cap from the outside. Further, the spacer functions to integrally connect the inner layer and the outer layer, and appropriately maintains the gap to secure an air passage.

Further, the protective cap of the present invention is characterized in that a shield for blocking the air holes is provided inside a cap body having a number of air holes. In this protective cap, it is preferable that a shield having a diameter larger than that of the ventilation hole is provided to face the ventilation hole.

This shield prevents a falling object or a flying object from entering the inside of the cap from the outside of the cap through the vent hole. In addition, since the shield is provided with a predetermined gap with respect to the air hole formed in the cap, outside air flows through the inside and outside of the cap.

Furthermore, an object of the present invention is to provide a protective cap which is excellent in air permeability and ventilation, and is provided with a waterproofing measure in rainy weather or the like.

That is, the protective cap of the present invention comprises a cap provided with a gap between the inner layer and the outer layer, and a large number of air holes are formed in the inner layer and the outer layer so as to be shifted from each other on the inner layer side and the outer layer side. A weir is provided around the ventilation hole on the side of the inner layer facing the outer layer. Each time a drain hole communicating with the gap is provided at the lower end of the outer layer. Desirable.

When this protective cap is worn outdoors in rainy weather, etc., the raindrops that have entered the gap between the protective cap through the vents in the outer layer flow down the outer surface of the inner layer. At this time, since the raindrops are blocked by the weir, the raindrops are smoothly discharged to the outside without entering the inside of the ventilation hole in the inner layer. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an overall side view of a protective cap according to the present invention,

FIG. 2 is a side view in which a part of the cap body 10 constituting the main body of the protective cap is cut away.

FIG. 3 is an enlarged cross-sectional view showing the main part.

FIG. 4 is a cross-sectional view showing another preferred embodiment of the protective cap with a main part cut away.

FIG. 5 is a sectional view of a main part showing still another preferred embodiment, and FIG. 6 is a front view of a disk used as a shield in the embodiment shown in FIG.

FIG. 7 is a partial side view of the embodiment of the protective cap provided with waterproofing measures in rainy weather or the like, with a part of the cap body cut away.

FIG. 8 is a perspective view partially showing the outer surface of the inner layer in the embodiment shown in FIG.

FIG. 9 is a side view showing another preferred embodiment of the protective cap in which an inner layer and an outer layer constituting the cap body are vertically separated. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the best mode of the protective cap according to the present invention will be described with reference to the drawings. You.

FIG. 1 shows an overall side view of the protective cap, and vent holes 20 are scattered almost 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. When strength is important, iron, steel, aluminum, aluminum alloys, and other high-strength alloys can be used. Depending on the use of the protective cap, it may be made of fiber-reinforced plastic or ceramic. It can also be.

FIG. 2 is a side view in which a part of the cap body 10 is cut away, and FIG. 3 is a cross-sectional view showing an enlarged main part thereof. The cap body 10 includes two layers, an inner layer 10A and an outer layer 10B, and a gap 12 is provided between both layers. In the present embodiment, the thickness of the gap 12 is substantially equal in any part of the cap 10. As will be described later, in the present invention, the gap 12 mainly functions as an air passage, so that a space through which air can flow may be secured. Therefore, the thickness of the gap 12 is preferably about 1 to 20 mm, particularly preferably about 3 to 10 mm.

A large number of ventilation holes 20A and 20B are formed in the inner layer 10A and the outer layer 10B. The ventilation holes 20A and 20B are formed substantially uniformly over the entire inner layer 10A and outer layer 10B, respectively, and the ventilation holes 20A and the ventilation holes 20B are offset from each other. Is formed. In the present invention, the air hole 20 A and the air hole 20 B are configured so as not to overlap with each other. Falling objects, flying objects, rainwater, etc., are exposed from the outside of the cap 10 to the air hole 20 A, the gap. 1 and through the ventilation hole 20 B to the inside of the cap body 10 This is to prevent the entry.

In this embodiment, since the inside of the inner layer 10A and the outside of the outer layer 10B communicate with each other through the ventilation hole 20A, the gap 12 and the ventilation hole 20B, the outside air is represented by a chain line in FIG. As shown by the arrow, the cap body 10 flows between the inside and the outside.

Since the ventilation holes 20A and 20B have the above-described functions, they may be disposed on the entire cap body 10 or may be disposed partially. In addition, the arrangement of the ventilation holes 20A and 20B may be regular or irregular. There is no particular limitation on the size of the ventilation holes 20A and 20B, and any size may be used as long as the strength of the cap 10 can be maintained. On the other hand, increasing the diameter of the ventilation holes 20 A and 2 OB can reduce the weight of the cap body 10 accordingly.

The shape of the ventilation holes 20A and 20B is not limited to a circular shape as shown in the figure. It may be an elliptical shape or a polygonal shape. Further, the size, shape, and the like of the ventilation hole 20A and the ventilation hole 20B may be different from each other. Furthermore, by forming the inner layer 10A and / or the outer layer 10B of the cap body 10 into a mesh structure, the vent hole 20A and the vent hole 20B may be formed in the cap body 10. However, as described above, it is important that the air holes 20A and the air holes 20B do not overlap.

Reference numeral 14 denotes a spacer provided at an appropriate position of the gap 12, which serves to integrally connect the inner layer 10 A and the outer layer 10 B, and appropriately holds the gap 12. To secure the air flow path. The spacer 14 has a function of transmitting the impact applied to the outer layer 10B to the inner layer 10A and dispersing the impact force. Therefore, spacer 14 It is desirable that the gap 12 be spotted in a spot or be provided circumferentially around the top of the cap 10 as a center.

In the present invention, the gap 12 may be provided with a cushioning material such as styrene foam or various sponges. However, it is necessary to adopt a shape and method that does not hinder ventilation, ventilation, and waterproofness. In FIGS. 2 and 3, the cap is usually provided as a protective cap and is attached to the inside of the cap 10 to reduce the impact applied to the cap 10 and the cap 10. The illustration of the so-called wearing body and the shock absorbing liner is omitted.

The cap body 10 of the present invention can be formed by joining the inner layer 10A and the outer layer 10B, in which the ventilation holes 20A and the ventilation holes 20B have been formed, and the cap body 1 It can be manufactured by an appropriate molding method such as integral molding using a pair of male and female molds having a zero mold surface.

Although the above-mentioned protective cap has a simple structure, it has excellent ventilation and ventilation. In addition, since the cap body 1, 0 has a double structure, it has high strength, excellent impact resistance, and high safety as a protective cap. Furthermore, the provision of the ventilation holes 20A and 20B realizes the weight reduction of the protective cap.

FIG. 4 is a cross-sectional view of a main part showing another preferred embodiment of the protective cap. This embodiment is different from the previous embodiment in that the cap body 10 is formed of a single layer. The point that the cap body 10 is provided with a large number of ventilation holes 20 penetrating through the inner and outer peripheral surfaces. This is the same as the above embodiment.

Reference numeral 22 denotes a shield provided inside the cap body 10 so as to face the air hole 20. In this embodiment, the shield '22 is a disk 2 having a larger diameter than the air hole 20. 2A is fixed to the inner wall surface of the cap body 10 with two to several legs 24 so as to cover the ventilation hole 20. The disk 22 A is for preventing falling objects and flying objects from outside the cap body 10 from entering the inside of the cap body 10 through the ventilation holes 20. It is necessary that the diameter of the air hole 20 be larger than that of the air hole 20, and that the air hole 20 have such a strength that it can be prevented from entering. As the material of the disk 22A, for example, a material having the same strength as the cap 10 can be used.

The legs 24 support the disk 22A and serve as a spacer that forms a slight gap 26 between the inner wall surface of the cap 10 and the disk 22A. Play a part. Thus, the length of the leg portion 24 may be any length as long as the gap 26 can be appropriately maintained to secure the air flow passage. That is, in the present embodiment, the outside air flows between the inside and the outside of the cap body 10 through the ventilation holes 20 and the gaps 26 as shown by arrows (dashed lines) in FIG.

Fig. 5 is a cross-sectional view of a principal part showing still another preferred embodiment of the protective cap. C In this embodiment, the cap body 10 has a dish-shaped disk 22 so as to cover the ventilation hole 20 on the inner wall. The shield 22 is formed by attaching B. Unlike the embodiment shown in FIG. 4, in this embodiment, the shield 22, that is, the disk 22 B is directly fixed to the inner wall of the cap 10.

As shown in FIG. 6, the disk 22B has a plurality of small holes 28 circumferentially formed at the periphery thereof, and the outside air flows between the inside and the outside of the cap body 10 through the small holes 18. I do.

The protective cap described above has a structure in which the shield 22 that covers the ventilation hole 20 is provided inside the cap 10, so that the shield 22 does not have a risk of being caught by something, and is a protective cap. Not only high safety but also good appearance. ' Next, an embodiment of a protective cap provided with waterproofing measures in rainy weather or the like will be described. FIG. 7 is a partial side view of the protective cap showing a part of the cap body cut away. The cap body 10 is composed of two layers, an inner layer 10A and an outer layer 10B, as in the embodiment shown in FIG. A gap 12 is provided between both layers ₍ a large number of ventilation holes 20A and 20B are formed in the inner layer 10A and the outer layer 10B. As in the embodiment shown in FIG. 3, the outside air flows between the inside and the outside of the cap body 10 as shown by the dashed line arrow in FIG.

A weir 16 is provided circumferentially around the air hole 20A of the inner layer 10A on the side where the inner layer 10A faces the outer layer 10B. Since the weir 16 needs only to be high enough to prevent the intrusion of water droplets, it is preferably about 0.1 to 20 mm, particularly preferably about 1 to 3 mm.

When this protective cap is used outdoors in rainy weather, etc., rainwater flows from the vent hole 20B of the outer layer 10B to the gap 12 of the protective cap as shown by the solid arrow in FIG. It penetrates, collides with the outer surface of the inner and layer 1 OA, and flows down along this outer surface. At this time, as shown in FIG. 3, if the area around the air hole 20 A is flat, the rainwater flows through the air hole 20 A to wet the inside of the protective cap. In this embodiment, the inner layer 1 OA As shown in FIG. 8 which partially shows the outer surface of the raindrop, the raindrop is blocked by the weir 16 and does not enter the inside of the vent hole 20A.

In the present embodiment, the weir 16 has a shape that rises vertically upward from the periphery of the ventilation hole 20 A, but the shape of the weir 16 is not limited to this. The upper end is bent further outward, or the weir 16 itself is inclined outward with respect to the ventilation hole 20 A, thereby preventing water droplets from entering the ventilation hole 20 A. May be. Next, another preferred embodiment of the present invention will be described with reference to FIG. FIG. 9 is a side view showing the inner layer 10 (FIG. 9 (2)) and the outer layer 10B (FIG. 9 (1)) of the cap body 10 which are vertically separated from each other. A weir 16B is provided around the ventilation hole 20B on the outer surface of the outer layer 10B as well as the inner layer 10A. The height of the weir 16 B is about the same as that of the weir 16, and it prevents raindrops adhering to the outer surface of the outer layer 10 B from entering the ventilation holes 20 B and, consequently, the gaps 12, and is waterproof. The measures will be further improved.

Reference numeral 18 denotes drain holes provided at several locations at the lower end of the circumference of the outer layer 10B, and serves to discharge water droplets flowing down the outer surface of the inner layer 10A to the outside of the outer layer 10B. have.

In the cap body 10 shown in this embodiment, the outer layer 10B is covered on the inner layer 10A, and both are joined to be integrated. Both may be joined via the spacer 14 described above, or may be joined via the weir 16 by adjusting the height of the weir 16 to the width of the gap 12. When the weir 16 has the role of the spacer 14, a part of the many weirs 16 may be used as the spacer 14, or the spacer 14 may be used. By providing a notch in the side surface of the air gap, air permeability in the gap 12 can be ensured. As described above, the cap body 10 can be formed by joining the inner layer 10A having the perforated holes 20A and 20B and the outer layer 10B. It can be manufactured by an appropriate molding method such as molding using a pair of male and female molds having a mold surface.

The above-mentioned protective cap is excellent in air permeability, air permeability and waterproof function. In addition, for all of the protective caps mentioned above, a penetration resistance test was conducted in accordance with the standards stipulated by the Minister of Labor (Notification No. 39 of the Ministry of Labor, dated June 5, 1991). (Articles 6 and 7) and the impact absorption test (Article 8) were performed. Industrial applicability

The protective cap of the present invention is excellent in air permeability and ventilation, despite its simple structure, so it can be used for various construction work, civil engineering work, heavy equipment operation, vehicle operation work, and security inside and outside the building. It can be used for work such as police, firefighting, etc. It can be widely used in construction sites such as buildings and dams, road and tunnel construction sites, shipyards, steelworks, ironworks, ore mining sites, and other various work sites and factories. You can do it.

Claims

The scope of the claims

1. It consists of a cap body with a gap between the inner layer and the outer layer, and the inner layer and the outer layer each have a large number of air holes, and the inner layer air holes and the outer layer air holes are formed offset from each other. protective cap, characterized in that it is ₍

2. The protective cap according to claim 1, wherein a spacer is interposed in said gap.

3. A protective cap, wherein a shield for blocking the air holes is provided inside a cap body having a large number of air holes.

4. The protective cap according to claim 3, wherein a shield having a diameter larger than that of the ventilation hole is provided so as to face the ventilation hole.

5. It consists of a cap with a gap between the inner layer and the outer layer. In this inner layer and the outer layer, a large number of ventilation holes are formed on the inner layer side and the outer layer side so as to be shifted from each other. A protective cap, wherein a weir is provided around the ventilation hole on the side of the protective cap.

6. The protective cap according to claim 5, wherein a drain hole communicating with the gap is provided at a lower end of the outer layer.