JP2021147731A - Helmet - Google Patents

Abstract

To provide a helmet that has both of safety properties and light-weight properties at the same time.SOLUTION: A helmet 1 includes: a hemispherical body 10 for covering a head part of a wearer; a top cover 20 having a hardness which is higher than that of the body 10; and an impact absorber 30 having a hardness which is lower than that of the top cover 20. The top cover 20 is fitted so as to cover at least an outside surface of an apex of the body 10. A recess part 12 is provided in a part of the body 10 which is covered by the top cover 20. The impact absorber 30 is disposed in the recess part 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a helmet worn by climbers and the like.

Protect your head when climbing or hiking, as it may cause an impact on your head due to falling rocks, falls, collisions, sliding, etc., or your head may hit branches or rocks and cause injury. It is desirable to wear a helmet.
Here, Patent Document 1 includes a deformable foam liner, a plurality of shell fragments, and a joining means made of a flexible material that realizes joining between the shell fragments, and the shell fragments are formed on the crown. Protective helmets arranged on a foam liner to form fragments, occipital fragments and multiple lateral fragments are disclosed.

Japanese Patent Application Laid-Open No. 2007-522352

Helmets used for mountaineering and hiking are not only safe, but also preferably lightweight so that the wearer does not get tired easily.
The protective helmet of Patent Document 1 is not intended to reduce the weight while maintaining the safety of the helmet. In addition, the shell is fragmented at the crown, occipital region, and lateral side, which is troublesome to manufacture.

Therefore, an object of the present invention is to provide a helmet having both safety and light weight.

The helmet 1 of the present invention according to claim 1 has a hemispherical main body 10 covering the wearer's head, a top cover 20 having a hardness higher than that of the main body 10, and a shock absorber 30 having a hardness lower than that of the top cover 20. The top cover 20 is mounted so as to cover at least the outer surface of the top of the main body 10, and a recess 12 is provided in the portion of the main body 10 covered by the top cover 20, and the shock absorber 30 is provided in the recess 12. Is arranged.

The present invention according to claim 2 is characterized in that, in the helmet 1 according to claim 1, a predetermined gap is provided between the top cover 20 and the shock absorber 30.

The present invention according to claim 3 is characterized in that, in the helmet 1 according to claim 1 or 2, the recess 12 is provided at the top of the main body 10.

The present invention according to claim 4 is characterized in that, in the helmet 1 according to any one of claims 1 to 3, the thickness of the impact absorber 30 is 20 mm or more and 30 mm or less.

According to the fifth aspect of the present invention, in the helmet 1 according to any one of claims 1 to 4, the main body 10 is made of expanded polypropylene, the top cover 20 is made of synthetic resin, and the shock absorber 30 is. It is characterized by being composed of expanded polystyrene.

According to the present invention, it is possible to provide a helmet having both safety and light weight.

Overall view of the configuration of the helmet without the top cover according to the embodiment of the present invention. Overall view of the helmet with the top cover attached External view of the main body of the helmet with the same top cover attached Front view of the main body of the helmet without the top cover attached A photograph of the main body of the helmet without the top cover attached from above The figure which shows the flow of the air taken in from the same opening

The helmet according to the first embodiment of the present invention includes a hemispherical body covering the wearer's head, a top cover having a hardness higher than that of the main body, and a shock absorber having a hardness lower than that of the top cover. The top cover is attached so as to cover at least the outer surface of the top of the main body, a recess is provided in the portion of the main body covered by the top cover, and a shock absorber is arranged in the recess.
According to the present embodiment, by arranging the impact absorber having a hardness lower than that of the top cover inside the top cover, it is possible to effectively absorb the impact from the outside and enhance the safety of the helmet. In addition, the top cover, which has a higher hardness than the main body, has excellent impact resistance, but is relatively heavy. Therefore, by attaching the top cover only to a part of the main body, it is possible to improve safety by focusing on the parts that are susceptible to impact while suppressing the weight increase of the helmet.

A second embodiment of the present invention has a predetermined gap between the top cover and the shock absorber in the helmet according to the first embodiment.
According to this embodiment, the safety of the helmet can be further enhanced.

The third embodiment of the present invention is the helmet according to the first or second embodiment, in which the recess is provided at the top of the main body.
According to this embodiment, even if a rock falls from directly above, the impact can be effectively absorbed.

A fourth embodiment of the present invention is a helmet according to any one of the first to third embodiments, wherein the thickness of the shock absorber is 20 mm or more and 30 mm or less.
According to this embodiment, the impact from the outside can be absorbed more effectively.

A fifth embodiment of the present invention is a helmet according to any one of the first to fourth embodiments, in which the main body is made of expanded polypropylene, the top cover is made of synthetic resin, and the shock absorber is made of expanded polystyrene. It consists of.
According to this embodiment, a helmet having more safety and light weight can be obtained.

Hereinafter, a helmet according to an embodiment of the present invention will be described.
FIG. 1 is an overall view of the configuration of a helmet in a state where the top cover is not attached according to the present embodiment. FIG. 2 is an overall view of the configuration of the helmet with the top cover attached, FIG. 2 (a) shows the appearance, and FIG. 2 (b) shows the cross-sectional structure. 3A and 3B are external views of the main body of the helmet with the top cover attached, FIG. 3A is a front view, and FIG. 3B is a front perspective view. FIG. 4 is a front view of the main body of the helmet without the top cover attached. FIG. 5 is a photograph of the main body of the helmet without the top cover attached, taken from above.

The helmet 1 has a hemispherical main body 10 that covers the wearer's head, a top cover 20 that has a hardness higher than that of the main body 10, a shock absorber 30 that has a hardness lower than that of the top cover 20, and an upper portion of the inner surface of the main body 10. It is provided with a circular top pad 40 to be attached, a band-shaped front pad 50 attached to the front portion of the inner surface of the main body 10, a string 60 for fixing the main body 10 to the wearer, and a hook 70 for attaching a headlight or the like. The hooks 70 are arranged at two places on the left and right of the front part of the main body 10 and one place at the center of the rear part.
By arranging the cushioning top pad 40 and front pad 50 on the inner surface of the main body 10, the wearer's head is less likely to come into contact with the inner surface of the main body 10, and comfort is improved. Further, since the top pad 40 and the front pad 50 have a function of absorbing an impact from the outside, safety is also improved.

The main body 10 has a top cover mounting portion 11 from the top of the outer surface to the front. The top cover mounting portion 11 is provided with a circular recess 12 in a top view for accommodating the shock absorber 30, and ventilation holes 13 in the cover at two locations on the left and right in front of the recess 12. Further, in the top cover mounting portion 11, groove portions 14 are provided on the outer edge, mounting holes 15 penetrating the main body 10 are provided at the four corners, and supports 16 are provided at the front two corners. The ventilation hole 13 in the cover is located behind the support 16.
Further, a plurality of outer cover vent holes 17 are provided along the peripheral edge of the top cover mounting portion 11 in the portion of the main body 10 where the top cover mounting portion 11 is not provided, that is, the portion not covered by the top cover 20. ing.
The ventilation holes 13 inside the cover and the ventilation holes 17 outside the cover are holes that penetrate the main body 10. Of the vent holes 17 outside the cover, those located on the side of the main body 10 are all preferably triangular. As a result, the strength around the vent hole 17 outside the cover is improved, and stones and branches are less likely to enter through the vent hole 17 outside the cover.

The top cover 20 has a substantially rectangular shape when viewed from above, and has a curved shape that matches the shape of the upper part of the outer surface of the hemispherical main body 10. Protrusions 21 to be inserted into the mounting holes 15 are provided at the four corners of the lower surface of the top cover 20. When the top cover 20 is attached to the main body 10, the protrusion 21 inserted into the mounting hole 15 from the outer surface side of the main body 10 is screwed from the inner surface side of the main body 10 with the mounting screw 22.
The top cover 20 is attached to the top cover mounting portion 11 of the main body 10 and covers the outer surface of the main body 10 from the top to the front. The outer edge of the top cover 20 fits into the groove 14 of the top cover mounting portion 11. By fitting the outer edge of the top cover 20 into the groove portion 14, the height at which the top cover 20 protrudes from the main body 10 can be suppressed.
Further, since the top cover 20 is mounted at a position where the possibility of falling rocks or the like is higher than that of other places, the top cover 20 is not provided with a hole for taking in air inside. By not providing the hole, it is possible to prevent falling rocks and the like from passing through the hole and directly hitting the main body 10.

A gap is provided between the front end of the top cover 20 and the main body 10, and the gap 80 forms an opening 80 that is directed diagonally downward. FIG. 6 is a diagram showing the flow of air taken in from the opening. As shown by an arrow in FIG. 6, the air taken in from the opening 80 to the inside of the top cover 20 flows into the inner surface side of the main body 10 through the ventilation hole 13 inside the cover and flows out from the ventilation hole 17 or the like outside the cover. .. Thereby, the breathability of the helmet 1 can be improved.
Further, the front end portion of the top cover 20 is supported from below by the support body 16. As a result, a gap between the top cover 20 and the main body 10 is secured, so that the predetermined opening area of the opening 80 can be maintained and air can be reliably taken in.

The recess 12 is a bottomed hole. A circular shock absorber 30 is arranged in the recess 12 when viewed from above. The shock absorber 30 has a shape corresponding to the recess 12, and is formed to be one size smaller than the recess 12 so as not to protrude from the recess 12.
By arranging the impact absorber 30 having a hardness lower than that of the top cover 20 inside the top cover 20, it is possible to effectively absorb the impact from the outside and enhance the safety of the helmet 1. Further, the top cover 20 having a hardness higher than that of the main body 10 is excellent in impact resistance, but is relatively heavy in weight. Therefore, by attaching the top cover 20 only from the top to the front of the main body 10, it is possible to improve safety by focusing on the parts that are susceptible to impact while suppressing the weight increase of the helmet 1.
The thickness of the shock absorber 30 is preferably 20 mm or more and 30 mm or less. As a result, the impact from the outside can be absorbed more effectively.

A predetermined gap is provided between the top cover 20 and the shock absorber 30. By providing a gap, the impact received by the top cover 20 due to falling rocks or the like is also mitigated by the gap, so that the safety of the helmet 1 can be further enhanced in combination with the impact absorption effect of the shock absorber 30. Can be done.
The predetermined gap between the top cover 20 and the shock absorber 30 is preferably 0.5 mm or more and 1 mm or less. As a result, the impact from the outside can be further alleviated.

The recess 12 is provided at the top of the main body 10. If a rock falls from directly above the wearer, the impact may be transmitted to the neck and cause damage. However, the shock absorber 30 should be provided with a recess 12 at a position corresponding to the top of the wearer's head. Therefore, even in such a case, the impact can be effectively absorbed and the damage can be reduced.

The main body 10 is made of low-magnification expanded polypropylene, the top cover 20 is made of synthetic resin, and the shock absorber 30 is made of low-magnification expanded polystyrene.
The expanded polypropylene used for the main body 10 is also used for bumpers and the like of automobiles, and can absorb the impact by repelling the impact. Further, by making the main body 10 made of foamed polypropylene, the weight of the helmet 1 can be reduced.
The synthetic resin top cover 20 constitutes a surface that disperses the impact and suppresses penetration. The synthetic resin is, for example, polycarbonate, ABS resin, polypropylene, or the like. By using the synthetic resin, the top cover 20 can easily return to its original shape even if it receives an impact.
The expanded polystyrene impact absorber 30 arranged between the main body 10 and the top cover 20 absorbs the impact by deforming (buckling, cracking) when it receives an impact.
As described above, since the main body 10 is made of expanded polypropylene, the top cover 20 is made of synthetic resin, and the shock absorber 30 is made of expanded polystyrene, the helmet 1 can be made more safe and lightweight.

1 Helmet 10 Body 12 Recess 20 Top cover 30 Shock absorber

Claims (5)

A hemispherical body that covers the wearer's head,
With a top cover that is harder than the main body,
It is equipped with a shock absorber whose hardness is lower than that of the top cover.
The top cover is fitted so as to cover at least the outer surface of the top of the body.
A recess is provided in the portion of the main body covered by the top cover.
A helmet characterized in that the shock absorber is arranged in the recess. The helmet according to claim 1, wherein a predetermined gap is provided between the top cover and the shock absorber. The helmet according to claim 1 or 2, wherein the recess is provided on the top of the main body. The helmet according to any one of claims 1 to 3, wherein the thickness of the shock absorber is 20 mm or more and 30 mm or less. The helmet according to any one of claims 1 to 4, wherein the main body is made of expanded polypropylene, the top cover is made of synthetic resin, and the shock absorber is made of expanded polystyrene.

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