JP2002339139A - Safety cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight safety cap capable of effectively protecting the head from shocks, etc., from the outside, realizing excellent air permeability and fashionability and effectively carrying out recycling of the safety cap to resources. SOLUTION: This safety cap is obtained by forming a reinforcing body 14 of a hat body shape of a magnesium alloy and providing a plurality of ventilating holes 20 passing through the reinforcing body 14 in the reinforcing body 14 so as to further wrap the reinforcing body 14 with a surface skin layer 16 made of a cloth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety hat,
The present invention relates to a safety cap having excellent impact resistance and capable of effectively suppressing the occurrence of stuffiness in the head even when worn for a long time.

[0002]

2. Description of the Related Art Conventionally, at construction sites and work sites, safety hats (helmets) have been worn on each worker's head for the purpose of protecting workers from collisions of objects such as falling objects. Used.

[0003] As a structure of such a helmet, a cap that gives the overall external shape of the helmet is generally used, and a foam having a predetermined thickness and a cushioning property is formed inside the cap. A structure in which a cushioning material layer provided integrally is provided.

[0004] The conventional helmet is required to have a light weight that the helmet wearer does not feel excessive load and an impact resistance enough to withstand an external impact. In the field, AES (acrylonitrile-special rubber-styrene copolymer) resin and PC
In order to maintain a certain strength, a hard resin such as a (polycarbonate) resin is integrally formed into a substantially hemispherical shape with a certain thickness, and this is adopted as such a cap body.

[0005] Therefore, such a conventional helmet does not have a vent hole for allowing steam or air to escape from the inside of the helmet to the outside, so that the head becomes easily stuffy due to sweat or the like. Long-term use gave the user considerable discomfort, such as the inside of the helmet becoming odorous. Although it is possible to provide a ventilation hole in such a resin helmet to improve the flow of air between the inside and the outside, there is a problem in strength due to the resin helmet, which is inevitable. However, the thickness is increased, which causes a problem that the object of sufficiently reducing the weight cannot be achieved.

Although various synthetic resins used as the material of the cap have excellent properties in terms of impact resistance and the like, the recycling (recycling) of the resin is not possible in the art. At present, it cannot be done easily for various reasons such as economy and economy. For this reason, most of the helmets that cannot be used due to damage etc. are incinerated or landfilled as waste, and such disposal has an adverse effect on human health and the environment. The problem that the helmet may be affected is inherent in the conventional helmet.

[0007]

Here, the present invention has been made in view of such circumstances, and a problem to be solved is that it is lightweight and effectively protects the head from external impacts and the like. Another object of the present invention is to provide a safety cap that realizes excellent breathability and fashionability, and that can be effectively recycled.

[0008]

According to the present invention, in order to solve such a problem, a security cap for protecting a worker's head is provided, and a cap-shaped reinforcing member for covering the worker's head is provided. Is formed of a magnesium alloy, and a large number of ventilation holes are provided through the reinforcing body, and a cloth skin layer covering the reinforcing body is provided on the surface of the reinforcing body. The feature of the present invention is a security cap.

Therefore, such a safety cap according to the present invention is made of a magnesium alloy for the cap-shaped reinforcing member that covers the worker's head, so that its lightness is ensured. On the other hand, it exhibits the same characteristics as a conventional helmet using a cap formed of a synthetic resin such as AES resin or PC resin, or a security cap provided with impact resistance higher than that. Becomes

Further, since the magnesium alloy is a material that can be easily recycled, the security cap according to the present invention, in which a cap-shaped reinforcing member is formed from such a magnesium alloy, is temporarily provided. Even in the case where it becomes unusable due to damage or the like, by taking out only such a cap-shaped reinforcing body from such a safety cap, performing remelting, refining, etc., the magnesium alloy of the present invention is again obtained. Not only can it be reused as a reinforcing material, but it can also be easily used for various other applications,
This has the advantage that the unusable security cap can be efficiently recycled.

Further, in the protective cap according to the present invention, the cap-shaped reinforcing member made of the magnesium alloy as described above is provided with a large number of ventilation holes so as to penetrate therethrough. Even if such a large number of air holes are present, the strength of the reinforcing body can be sufficiently ensured, and the impact resistance is excellent, and through such air holes, The movement of air and water vapor between the inside and outside of the safety cap can advantageously solve the problems of the conventional helmet, such as the head becoming stuffy due to sweat or the like.

[0012] Furthermore, in such a security cap, since a cloth skin layer that covers the reinforcing body is provided on at least the outer surface of the reinforcing body, the appearance is similar to that of a normal hat. By giving and changing the color and pattern of the outer surface of the skin layer in various ways, it becomes possible to adopt various designs, which makes it more fashionable than conventional helmets It also has the following characteristics.

According to one preferred embodiment of such a safety hat according to the present invention, the cloth flange integrally formed with the cloth skin layer projects forward from the lower peripheral edge of the reinforcing body. Is provided so that
Further, the hat has an appearance similar to that of a normal hat, and is rich in fashion.

[0014] In addition, according to the present invention, in order to solve the problems of the conventional helmet as described above, a protective cap for protecting the worker's head is provided to cover the worker's head. A cap-shaped reinforcing body is formed of a magnesium alloy, a number of ventilation holes are provided through the reinforcing body, and a resin-made annular skirt is fitted to the lower peripheral edge of the reinforcing body. The gist of the security hat, which is characterized by being hampered, is also provided.

That is, even in such a safety cap, the advantage of forming the reinforcing member by using the magnesium alloy as described above can be enjoyed as it is, as a matter of course. Since a resin-made annular skirt is fitted to the lower peripheral edge of the reinforcing body, the appearance or design effect is different from that of the conventional helmet. In addition, the lower end of the reinforcing body does not directly contact the head due to the presence of the annular skirt,
Therefore, the problem that the head is damaged at the lower end of the reinforcing member due to the impact due to the collision of the object can be completely avoided.

In one preferred embodiment of such a security cap according to the present invention, at least one of a flange, an ear protection portion and an occipital region protection portion is integrally provided on the skirt portion. Yes, the safety of such a safety cap wearer can be more advantageously ensured.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, in order to clarify the present invention more specifically, representative embodiments of the present invention will be described.
This will be described in detail with reference to the drawings.

First, FIG. 1 and FIG. 2 are a schematic front view and a plan view, respectively, in a state in which a cloth skin layer is partially removed, as a schematic explanatory view according to an example of a security cap having a structure according to the present invention. FIG. 3 is a bottom view of such a safety hat, and FIG. 4 is a sectional view taken along line AA in FIG. And as is clear from those figures, the safety cap 10 has a cushioning material layer 12 having a shape corresponding to half of a substantially elliptical body that can cover the wearer's head,
A reinforcement body 14 having a similar shape, which is attached so as to cover the outer peripheral surface of the cushioning material layer 12, and a cloth skin layer 16 covering both the cushioning material layer 12 and the reinforcement body 14. It is.

More specifically, the cushioning material layer 12 is formed into a substantially semi-elliptical spherical shape having a predetermined thickness using a foamable resin (polyurethane foam or the like) as a raw material, similarly to the cushioning material layer in a conventional helmet. It has been done. As is apparent from the partially enlarged cross-sectional view of FIG. 5, the cushioning material layer 12 has a plurality of openings 18 penetrating in its thickness direction, and has an outer surface (a surface in contact with the reinforcing member 14). ) Is an uneven surface formed by forming an uneven portion, and a gap through which air can flow is formed between the cushioning material layer 12 and the reinforcing member 14.

The cap-shaped reinforcing member 14 attached to the outer surface of the cushioning material layer 12 is formed by a known forming operation using a magnesium alloy. In the security hat having such a configuration, the reinforcing member 14 is formed of a lightweight magnesium alloy having higher mechanical strength than a synthetic resin material such as AES resin or PC resin. This is a lightweight security hat with equal or higher impact resistance than a conventional helmet using a hat body made of a synthetic resin material.

The reinforcing member 14 has a structure shown in FIGS.
As is apparent from FIG. 5 and FIG. 5, a large number of ventilation holes 20 penetrating therethrough in the thickness direction are provided, and such a reinforcing member 14 is formed from a magnesium alloy as described above. In addition to its strength, it is as light as the conventional helmet. That is, in the case of a conventional resin-made reinforcing body (cap body), when a ventilation hole penetrating therethrough is provided, in order for such a reinforcing body to exhibit sufficient strength, when a ventilation hole is not provided, In comparison, the thickness must be greatly increased,
Therefore, it was not possible to sufficiently reduce the weight of the reinforcing member. However, in the case where the reinforcing member 14 is formed of a lightweight magnesium alloy having excellent mechanical strength as in the present invention. Since the thickness of the reinforcing member 14 does not need to be as thick as that of the conventional resin reinforcing member even if the ventilation holes 20 are provided, the reinforcing member 14 and the
Therefore, sufficient strength in the entirety and lightness that the wearer does not feel burdened are achieved at the same time.

The air hole 20 provided in the reinforcing member 14 and the opening 18 provided in the cushioning material layer 12 communicate with each other in this manner. Not only when the opening 18 is located immediately below the air hole 20 but also when the opening 18 is not located immediately below the ventilation hole 20, the presence of the concave and convex portions provided in the cushioning material layer 12 causes The air holes 20 and the openings 18 are communicated with each other through the gaps formed therebetween, whereby the air permeability in the security cap 10 can be secured, and the head is stuffy due to sweat or the like. Problems with conventional helmets, such as squatting, have been advantageously solved.

The size of the vent hole 20 provided in the reinforcing member 14 as described above may be any size as long as the strength required for the reinforcing member 14 is not adversely affected. Not shown in FIGS. 1 to 5
As shown in FIG.
In the case where 0 is provided, it is generally desirable that the small hole has a diameter of about 1.5 to 2 mm.

Further, the integrated body of the cushioning material layer 12 and the reinforcing member 14 combined as described above is covered by a cloth (cloth skin layer 16) so as to be wrapped therein. By making the outermost surface that touches the eyes upholstered, the reinforcing member 14 and the cushioning material layer 1 existing inside the outermost surface are upholstered.
2 is hidden and cannot be seen, thereby giving an appearance similar to that of the conventional hat and improving the design.

Here, as the cloth constituting the cloth skin layer 16, any cloth can be used as long as it is a cloth used for a normal hat.
In particular, a moisture-permeable waterproof material that blocks the passage of water droplets but allows the passage of air and water vapor, specifically, Entranto (trade name, Toray Industries, Inc.) and Gore-Tex (trade name, Japan Gore-Tex Corporation) ) Can be preferably used, so that the steam containing sweat inside the safety cap passes through the cloth skin layer 16 and the head is stuffy due to sweat etc. caused by the conventional helmet. This problem can be advantageously solved, and the inside of the safety cap 10 can be advantageously prevented from getting wet by the water drops from the outside such as rainwater and the head getting wet.

The cloth skin layer 16 is fixedly attached to the cushioning layer 12 and the reinforcing member 14 in order to make the wearing of the head of the safety cap wearer comfortable. It is preferable that, as the fixing means, any conventionally known means can be adopted.For example, the fixing means can be fixed with an adhesive or the like, or fixed using a bonding material such as a hook-and-loop fastener or an adhesive tape. You will be swayed.

In addition, as shown in FIGS. 1 to 3, the cloth skin layer 16 covering the cushioning material layer 12 and the reinforcing member 14 protrudes forward from the lower peripheral edge of the reinforcing member 14, as shown in FIGS. As described above, a cloth collar 22 having a shape similar to that of a conventional hat is sewn and provided integrally, thereby forming a generally used cushioning material layer for absorbing external impact. The appearance is no different from that of a hat (cap) made of only cloth having no cloth.

Next, FIGS. 6 to 10 show schematic explanatory views according to another example of the security cap having the structure according to the present invention. As is clear from these figures, the security cap is apparent. Reference numeral 24 denotes a cap-shaped reinforcing member 26 and an annular skirt portion 28 fitted on the lower peripheral edge of the reinforcing member 26.

More specifically, the reinforcing member 26 is formed as shown in FIGS.
As in the case of the reinforcing body 14 in the safety cap shown in FIG. 1, the head cap is formed in a substantially hemispherical shape with a magnesium alloy, and corresponds to the left and right side heads and the back of the wearer on the outer surface thereof. At the portions, concave portions 30 concaved in an arc shape are provided, and further, in these concave portions 30, ventilation holes 32 penetrating the reinforcing body 26 in and out are provided.
Three recesses are provided for each recess. Although not shown in FIGS. 6 to 10, the inner surface of the reinforcing body 14 includes
As in the case of the conventional helmet, a headband surrounding the lower end thereof and a hammock made of shock-absorbing tape and a string are assembled so that the safety cap 24 can be held on the wearer's head. In addition, when an impact is applied to the safety cap, the impact can be absorbed and reduced.

The annular skirt portion 28 is formed of a molded body made of semi-rigid resin (reinforced polyethylene), and has a size corresponding to the lower peripheral edge of the reinforcing member 26. A flange portion 34 protruding forward of the wearer with a predetermined width; and an ear protection portion 36 bulging outside the annular portion so as to mainly cover the upper portion of the wearer's ears.
Further, an occipital region protecting portion 38 hanging down a predetermined length behind the wearer is integrally provided.

The annular skirt portion 28 made of such a resin is fitted to the peripheral edge of the lower end of the reinforcing member 26 to constitute the safety cap 24 as a whole.
Specifically, as shown in an enlarged manner in FIG. 10, a lower end peripheral portion of a reinforcing body 26 whose cross section is formed in a wedge shape having a downwardly convex shape is provided at an upper end portion of an annular skirt portion 28. The reinforcing body 26 and the annular skirt 28 are assembled by being press-fitted into the grooved groove and forcibly fitted.

Therefore, in the security cap 24 having the above-described structure, the outermost surface that can be visually recognized is a reinforcing member 26 made of a magnesium alloy and an annular skirt portion 28 made of a predetermined semi-hard resin. Based on the fact that the texture of the magnesium alloy and the semi-hard resin are different, the appearance of the helmet is different from that of the conventional helmet where only the cap made of resin material is exposed to the outside. It gives an impression.

Further, since the annular skirt portion 28 is fitted to the lower peripheral portion of the reinforcing member 26 in such a security cap 24, the lower peripheral portion of the reinforcing member 26 is directly worn. Contact with the head of the person can be effectively avoided. For example, when an object collides with such a safety cap 24 and the impact causes the worn safety cap to be displaced from its original position. Even so, it is possible to effectively prevent the wearer's head from being damaged by the lower end of the reinforcing body 26 made of a magnesium alloy.

Further, the annular skirt portion 28 of the illustrated safety cap 24 is provided with the flange portion 34, the ear protection portion 36, and the occipital region protection portion 38 integrally. And direct contact with the back of the head can be prevented, so that the safety of the wearer of the safety cap can be more advantageously ensured.

As the resin material constituting such an annular skirt portion 28, any of various conventionally known resins can be employed, and in particular, FIG. 6 to FIG.
In the case where the peripheral edge of the lower end of the reinforcing body 26 is press-fitted into the groove provided at the upper end of the annular skirt and forcedly fitted as in the security cap 24 shown in FIG. A resin material called a so-called semi-hard resin, such as reinforced polyethylene mixed with glass fiber or the like, can be suitably used.

It is needless to say that the security cap 24 can enjoy the advantage of forming the reinforcing member of a magnesium alloy as it is, similarly to the security cap 10 described above.

When forming the reinforcing members 14 and 26 of the security caps 10 and 24 from a magnesium alloy as described above, any of the conventionally known methods for forming a magnesium alloy can be appropriately employed. In particular, among them, the molding method (thixomolding method) of molding a magnesium alloy in a semi-molten state using a machine similar to an injection molding machine for plastic is preferably used. Will be used.

As the magnesium alloy used for such forming, any known magnesium alloy for casting can be used.
In the case where the reinforcing body is formed by the thixomolding method as described above, in particular, AZ91D (ASTM)
Notation) alloys can be suitably used.

Although the two typical examples of the present invention have been described in detail above, they are merely examples, and the present invention is not limited by the above description. Not that, of course.

For example, in the case of the reinforcing body 26 constituting the security cap 24 shown in FIGS.
In the arc-shaped concave portions 30 provided at the portions corresponding to the left and right heads and the back of the wearer, three ventilation holes 32 penetrating the reinforcing body 26 are provided for each concave portion. The position where the vent hole 32 is provided is appropriately determined so that the air inside the reinforcing body 26 can be exchanged with the outside air in an advantageous manner, and is not limited to a portion as illustrated in the drawings. is not.

Incidentally, in the reinforcing body 42 of the security cap 40 shown in FIGS. 11 to 13, a raised portion 44 is provided at a portion corresponding to the frontal region of the wearer, and a portion corresponding to the occipital region. A concave portion 46 is provided on the side surface of the raised portion 44 and a vent hole 48 is provided in the concave portion 46. Of course, also in this example, the reinforcing member 42 is formed of a magnesium alloy, while the annular skirt portion 50 is made of resin, and has a flange portion, an ear protection portion, and an occipital region protection portion as in the previous example. It has a structure.

In addition, although not enumerated one by one, the present invention
Based on the knowledge of those skilled in the art, various changes, modifications, improvements and the like can be implemented in an aspect,
It goes without saying that all such embodiments are included within the scope of the present invention, without departing from the spirit of the present invention.

[0043]

As is apparent from the above description, the safety cap according to the present invention is lightweight, and can effectively protect the head from external impact due to collision of an object and the like.
It can achieve excellent breathability and fashionability. In addition, even in the case where it becomes unusable due to breakage, etc., by taking out the reinforcing body made of magnesium alloy from such a safety cap, by re-melting, refining, etc., it can be easily used for various purposes. It can also be very easily recycled.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an example of a safety hat according to the present invention.

FIG. 2 is a partially cutaway plan view of the security cap shown in FIG. 1;

3 is a partially cutaway bottom view of the security cap shown in FIG. 1;

FIG. 4 is an explanatory sectional view taken along the line AA in FIG. 1;

FIG. 5 is an enlarged sectional explanatory view showing an example of an arrangement of a cushioning material layer, a reinforcing member, and a fabric skin layer in the security hat of FIG. 1;

FIG. 6 is a perspective explanatory view showing another example of the safety hat according to the present invention.

FIG. 7 is an exploded perspective view of a reinforcing body and an annular skirt portion in the security hat of FIG. 6;

FIG. 8 is an explanatory plan view of the safety hat shown in FIG. 6;

9 is an explanatory front view of the safety hat shown in FIG. 6;

FIG. 10 is an enlarged sectional explanatory view showing an example of a fitting form of a reinforcing body and an annular skirt portion in the security hat of FIG. 6;

FIG. 11 is a perspective explanatory view showing still another example of the security cap according to the present invention.

FIG. 12 is an explanatory plan view of the security hat shown in FIG. 11;

13 is an explanatory front view of the security cap shown in FIG. 11;

[Explanation of symbols]

10, 24, 40 Protective cap 12 Buffer layer 14, 26, 42 Reinforcement 16 Cloth skin layer 18 Opening 20, 32, 4
Reference Signs List 8 ventilation hole 22 cloth flange 28, 50 annular skirt part 34 flange part 36 ear protection part 38 back head protection part

Claims (4)

[Claims] 1. A safety hat for protecting a worker's head,
A cap-shaped reinforcing body covering the head of the worker is formed of a magnesium alloy, and a large number of ventilation holes are provided through the reinforcing body, and a cloth covering the reinforcing body is provided. A security cap, wherein a skin layer is provided on a surface of the reinforcing body. 2. The security cap according to claim 1, wherein a cloth flange integrally formed with the cloth skin layer is provided so as to protrude forward from a lower peripheral edge of the reinforcing member. 3. A safety hat for protecting a worker's head,
A cap-shaped reinforcing body covering the head of the worker is formed of a magnesium alloy, and a large number of ventilation holes are provided through the reinforcing body. A safety cap characterized by being fitted with an annular skirt made of steel. 4. The safety cap according to claim 3, wherein at least one of a flange, an ear protection portion, and an occipital region protection portion is integrally provided on the skirt portion.