JP7363020B2 - Shock-absorbing structure, and helmet - Google Patents

Shock-absorbing structure, and helmet Download PDF

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JP7363020B2
JP7363020B2 JP2018180233A JP2018180233A JP7363020B2 JP 7363020 B2 JP7363020 B2 JP 7363020B2 JP 2018180233 A JP2018180233 A JP 2018180233A JP 2018180233 A JP2018180233 A JP 2018180233A JP 7363020 B2 JP7363020 B2 JP 7363020B2
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浩之 山村
隼 長谷川
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DIC Plastics Inc
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Description

本発明は、ヘルメットの帽体内部に設けられている衝撃吸収する構造、およびヘルメットに関する。 TECHNICAL FIELD The present invention relates to a shock absorbing structure provided inside a cap body of a helmet, and a helmet.

通常、産業用ヘルメットの帽体の内面には、ハンモックが取り付けられている。ハンモックは、通常、頭頂部から放射線状に下に延びる脚部を備え、各脚部の下端部は、帽体の下縁側内面に着脱自在に連結されている。そうすることで、人頭を帽体内部の定位置に安定させるとともに、頭頂付近の垂直方向の衝撃を緩和する役目を果たしている。 Usually, a hammock is attached to the inner surface of the cap body of an industrial helmet. A hammock usually includes legs extending radially downward from the top of the head, and the lower end of each leg is detachably connected to the inner surface of the lower edge of the cap. By doing so, it not only stabilizes the human head in a fixed position inside the cap body, but also serves to alleviate the vertical impact near the top of the head.

また、頭頂付近以外の衝撃も緩和するため、衝撃吸収ライナが取付けられている。衝撃吸収ライナは、通常、発泡スチロール等により形成されており、帽体の内面を殆ど覆っている(例えば、特許文献1)。 Additionally, a shock-absorbing liner is attached to reduce shocks to areas other than the top of the head. The shock absorbing liner is usually made of foamed polystyrene or the like, and covers most of the inner surface of the cap body (for example, Patent Document 1).

しかし、帽体と着装体との間にこのようなライナが設けられていると、帽体と人頭との間の空隙が僅かとなることから、ヘルメット内部の通気性が悪く、衝撃吸収ライナにより放熱も阻害される。このため、ヘルメット内部に熱こもりや蒸れが生じて着用時の快適性が損なわれる不都合がある。
そこで、発泡スチロール等による帽体の内面を殆ど覆うライナを取り除き、ハンモックに工夫をこらすことで、衝撃を吸収する構造が提案されている(特許文献2、特許文献3)。
However, when such a liner is provided between the cap body and the wearing body, there is a small gap between the cap body and the person's head, resulting in poor ventilation inside the helmet and the need for a shock absorbing liner. This also impedes heat dissipation. For this reason, there is a disadvantage that heat buildup and stuffiness occur inside the helmet, impairing comfort when worn.
Therefore, a structure has been proposed in which the hammock is designed to absorb shock by removing the liner made of polystyrene foam or the like that covers most of the inner surface of the cap body (Patent Documents 2 and 3).

特開2014-221948号公報JP2014-221948A 特開2015-25226号公報JP2015-25226A 特開2017-133124号公報Japanese Patent Application Publication No. 2017-133124

本発明は、頭頂付近以外の衝撃を吸収することができ、ヘルメット内部に熱こもりや蒸れが改善された衝撃吸収体を提供する。 The present invention provides a shock absorber that is capable of absorbing shocks other than near the top of the head and that reduces heat buildup and stuffiness inside the helmet.

即ち、本発明は、
(1)帽体の内側にあるアーチ状の衝撃吸収体であって、アーチ状の長手方向の両端は、帽体への取付部1であり、帽体の頭頂を中心として曲面での直径10cmの円の円内範囲以外の帽体への衝撃点Aを考え、衝撃点Aと頭頂を含む第1垂直面Pと、頭頂を含み第1垂直面Pに直角に交わる第2垂直面Qと、高さ方向の中央にある第1水平面Rで、帽体を8分割したとき、帽体の取付部1が、第2垂直面Qで切断された衝撃点Aを含まない帽体部分であって、第1水平面Rより下部であって、第1垂直面Pの左右にあり、アーチ状の長手方向の中央部2が、衝撃点Aにおける法線の帽体内曲面の交点の近傍に配置される第1の衝撃吸収体、
(2)(1)に記載の第2垂直面Qに対して(1)に記載の第1の衝撃吸収体と対称に位置する衝撃吸収体を第2の衝撃吸収体としたとき、(1)に記載の第1の衝撃吸収体と第2の衝撃吸収体を有する第3の衝撃吸収体、
(3)(2)に記載の第3の衝撃吸収体を帽体の頭入口の円周の円周方向に時計周りで90度回転させた衝撃吸収体を第4の衝撃吸収体としたとき、(2)に記載の第3の衝撃吸収体と第4の衝撃吸収体を有する第5の衝撃吸収体、である。
That is, the present invention
(1) It is an arch-shaped shock absorber inside the cap body, and both ends of the arch shape in the longitudinal direction are attachment parts 1 to the cap body, and have a diameter of 10 cm on a curved surface centered on the top of the cap body. Considering an impact point A on the cap body outside the range within the circle, a first vertical plane P that includes the impact point A and the top of the head, and a second vertical plane Q that includes the top of the head and intersects at right angles to the first vertical plane P. , when the cap body is divided into eight parts by the first horizontal plane R located at the center in the height direction, the attachment part 1 of the cap body is a part of the cap body that does not include the impact point A cut by the second vertical plane Q. is located below the first horizontal plane R, on the left and right sides of the first vertical plane P, and has an arched longitudinal central portion 2 located near the intersection of the normal line at the point of impact A and the curved surface inside the cap. a first shock absorber,
(2) When a shock absorber located symmetrically to the first shock absorber described in (1) with respect to the second vertical plane Q described in (1) is defined as a second shock absorber, (1 ) a third shock absorber having the first shock absorber and the second shock absorber according to
(3) When the third shock absorber described in (2) is rotated 90 degrees clockwise in the circumferential direction of the circumference of the head entrance of the cap body, and the fourth shock absorber is used as the fourth shock absorber. , a fifth shock absorber having the third shock absorber and the fourth shock absorber according to (2).

本発明の衝撃吸収体であれば、頭頂付近以外の衝撃に対して衝撃を吸収することができ、ヘルメット内部に熱こもりや蒸れが改善される。 The impact absorber of the present invention can absorb impacts other than those near the top of the head, thereby reducing heat buildup and stuffiness inside the helmet.

図1は、本発明の第1の例の衝撃吸収体の斜視図である。FIG. 1 is a perspective view of a shock absorber according to a first example of the present invention. 図2は、本発明の第2の例の衝撃吸収体の斜視図である。FIG. 2 is a perspective view of a shock absorber according to a second example of the present invention.

本発明のアーチ状の衝撃吸収体は、斜め方向あるいは横方向の衝撃を目的としたものであるからほぼ垂直方向の衝撃となる帽体の頭頂付近の衝撃、即ち、帽体の頭頂を中心として曲面での直径10cmの円の円内の帽体への衝撃は考慮していない。それらの衝撃は、従来のハンモック、即ち、頭頂部から放射線状に下に延びる脚部を備え、各脚部の下端部は、帽体の下縁側内面に着脱自在に連結される構造のハンモックで衝撃吸収が緩和可能だからである。 Since the arch-shaped shock absorber of the present invention is intended to absorb diagonal or lateral impacts, it can absorb impacts near the top of the cap body, which is a nearly vertical impact, i.e., the impact is centered on the top of the cap body. Impact on the cap body within a circle with a diameter of 10 cm on a curved surface is not considered. These shocks are applied to a conventional hammock, that is, a hammock that has legs extending radially downward from the top of the head, and the lower end of each leg is detachably connected to the inner surface of the lower edge of the cap. This is because shock absorption can be alleviated.

アーチ状の長手方向の中央部2は、衝撃点Aにおける法線の帽体内曲面の交点の近傍に配置される。中央部2は、幅方向に所定の幅を持つが、衝撃点Aにおける法線の帽体内曲面の交点との距離を考える場合は、中央部2と交点との最短距離を考える。この距離は、ヘルメットの形状にもよるが、通常4から5センチメートルである。それぐらいであれば、衝撃でへこみが生じた場合でもへこみが人頭にとどくことがないからである。 The arched longitudinal central portion 2 is located near the intersection of the normal to the curved surface inside the cap at the point of impact A. The central portion 2 has a predetermined width in the width direction, but when considering the distance between the normal line at the impact point A and the intersection of the curved surface inside the cap, consider the shortest distance between the central portion 2 and the intersection. This distance is usually 4 to 5 centimeters, depending on the shape of the helmet. This is because even if a dent occurs due to an impact, the dent will not reach the human head.

先の(1)に記載のように、アーチ状の衝撃吸収体の取付部1、中央部2を配置することにより、衝撃点Aに衝撃が加わったとき、帽体が衝撃方向に動こうとするが、それにともないアーチ状の衝撃吸収体は、一対の取付部1の間にこの移動を阻止しようとする張力が働き、衝撃を吸収することになる。 As described in (1) above, by arranging the mounting part 1 and the central part 2 of the arch-shaped shock absorber, when an impact is applied to the impact point A, the cap body does not move in the impact direction. However, the arch-shaped shock absorber absorbs the shock due to the tension acting between the pair of attachment parts 1 to prevent this movement.

本発明のアーチ状の衝撃吸収体は、従来のハンモック、即ち、頭頂部から放射線状に下の延びる脚部を備え、各脚部の下端部は、帽体の下縁側内面に着脱自在に連結される構造のハンモックと併用してもいい。この場合、従来のハンモックと一体成型することも可能である。また、後の実施例2で示すがごとく、それ自体、頭部を帽体に安定させるためのハンモックとして使用することもできる。 The arch-shaped shock absorber of the present invention is similar to a conventional hammock, that is, it has legs extending radially downward from the top of the head, and the lower end of each leg is detachably connected to the inner surface of the lower edge of the cap body. It can also be used in conjunction with a hammock with a similar structure. In this case, it is also possible to integrally mold it with a conventional hammock. Further, as shown in Example 2 later, the cap itself can be used as a hammock for stabilizing the head on the cap body.

衝撃吸収体の材質は、ポリエチレン、ポリプロピンなどの弾性力のある樹脂、繊維、皮等の張力を有する素材が好ましい。
ハンモックと一体成型しないのであれば、ハンモックは衝撃吸収体に関係なく、自由に材質を選択できる。
樹脂など用いる場合は、アーチ状の帯部分に複数の貫通孔を設けることで軽くすることもできる。
以下、本発明を図面を参照しながら、本発明の実施例について説明する。
The material of the shock absorber is preferably a resin with elasticity such as polyethylene or polypropylene, or a material with tension such as fiber or leather.
If it is not integrally molded with the hammock, you can freely choose the material of the hammock regardless of the shock absorber.
If resin or the like is used, the weight can be reduced by providing a plurality of through holes in the arched band portion.
Embodiments of the present invention will be described below with reference to the drawings.

図1は、本発明の第1の例の衝撃吸収体の斜視図である。一点鎖線がヘルメットの帽体であり、長破線が衝撃点Aにおける法線である。本実施例では、衝撃点Aは、帽体正面で、帽体左右方向の中央、帽体の高さ方向で下から3/4の位置を想定している。従って、衝撃点Aと帽体の頭頂を含む第1垂直面Pは、帽体の正面を左右方向の中央で帽体を二分する垂直面となる。また、第2垂直面Qは、帽体の正面を前としたとき、前後方向の中央で帽体を二分する。第1水平面Rは、帽体の高さ方向の中央で帽体を二分する。面P、Q、Rは、破線で示してある。 FIG. 1 is a perspective view of a shock absorber according to a first example of the present invention. The dashed line is the cap body of the helmet, and the long dashed line is the normal line at the point of impact A. In this embodiment, the impact point A is assumed to be at the front of the cap body, at the center in the left-right direction of the cap body, and at a position 3/4 from the bottom in the height direction of the cap body. Therefore, the first vertical plane P including the point of impact A and the top of the cap becomes a vertical plane that bisects the front of the cap in the center in the left-right direction. Further, the second vertical plane Q divides the cap body into two at the center in the front-rear direction when the front face of the cap body is the front. The first horizontal plane R bisects the cap body at the center in the height direction of the cap body. Surfaces P, Q, and R are shown with dashed lines.

衝撃吸収体はアーチ状をしており、帽体への取付部1は、アーチ状の両端部にある。本実施例では、帽体の突起部分に取り付けるため、取付のための開口がある。
取付部1は、帽体の後ろ下部の左右に位置する。そして、アーチ状の中央部2と衝撃点Aにおける法線と帽体内曲面の交点との最短距離は、4センチメートルである。
The shock absorber has an arch shape, and the attachment parts 1 to the cap body are located at both ends of the arch shape. In this embodiment, since it is attached to the protruding portion of the cap body, there is an opening for attachment.
The attachment parts 1 are located on the left and right sides of the lower rear part of the cap body. The shortest distance between the arch-shaped central portion 2 and the intersection of the normal line at the point of impact A and the curved surface inside the cap is 4 centimeters.

実施例1では、帯状の衝撃吸収体の安定が悪く、安定させるためには、一対の取付部1の間で、少なくとも、もう一点、帽体、あるいはハンモック等に支持されるほうがいい。しかし、帯状の衝撃吸収体を2つ組み合わせることで、アーチ状の衝撃吸収体を安定させることが可能である。図2は、その例で、本発明の第2の例の衝撃吸収体の斜視図である。衝撃点Aの位置は、実施例1と同じである。衝撃点Bの位置は、衝撃点Aと第2垂直面に対して、対称な位置にある。従って、この衝撃点Bに対するアーチ状の衝撃体の取付部1は、帽体の前側の下部の左右に位置する。また、アーチ状の長手方向の中央部2は、衝撃点Bにおける法線と帽体内曲面の交点との最短距離は、4センチメートルである。 In the first embodiment, the stability of the belt-shaped shock absorber is poor, and in order to stabilize it, it is better to support it at least one more point between the pair of attachment parts 1, such as a cap body or a hammock. However, by combining two belt-shaped shock absorbers, it is possible to stabilize the arch-shaped shock absorber. FIG. 2 is a perspective view of a shock absorber according to a second example of the present invention. The position of the impact point A is the same as in the first embodiment. The position of the impact point B is symmetrical to the impact point A and the second vertical plane. Therefore, the attachment portions 1 of the arch-shaped impact body for this impact point B are located on the left and right sides of the lower front side of the cap body. Further, in the arched longitudinal central portion 2, the shortest distance between the normal line at the point of impact B and the intersection of the curved surface inside the cap is 4 centimeters.

衝撃点Aに対応する衝撃吸収体を第1の衝撃吸収体、衝撃点Bに対応する衝撃吸収体を第2の衝撃吸収体としたとき、第1の衝撃吸収体と第2の衝撃吸収体の交差している面は、例えば、接着剤で連結されている。このように、することにより、前斜めと後ろ斜めの衝撃を吸収することができ、かつ衝撃体も帽体への取付部1が4点あり、安定した構造とすることができる。 When the shock absorber corresponding to the impact point A is the first impact absorber and the impact absorber corresponding to the impact point B is the second impact absorber, the first impact absorber and the second impact absorber The intersecting surfaces of the two are connected, for example, with an adhesive. By doing this, front oblique and rear oblique impacts can be absorbed, and the impact body has four attachment points 1 to the cap body, making it possible to have a stable structure.

実施例2の衝撃吸収体を第3の衝撃吸収体としたとき、第3の衝撃吸収体を帽体の頭入口の円周の円周方向に時計周りで90度回転させた衝撃吸収体を第4の衝撃吸収体とし、第3の衝撃吸収体と第4の衝撃吸収体をあわせた第5の衝撃吸収体を考えることもできる。第5の衝撃吸収体の構造であれば、前後の衝撃吸収にくわえ、側面からの衝撃も吸収することができる。 When the shock absorber of Example 2 is used as a third shock absorber, the third shock absorber is rotated 90 degrees clockwise in the circumferential direction of the circumference of the head entrance of the cap body. It is also possible to consider a fifth shock absorber that is a fourth shock absorber and a combination of the third shock absorber and the fourth shock absorber. With the structure of the fifth shock absorber, it is possible to absorb not only front and rear shocks but also side shocks.

1 取付部
2 中央部
A 帽体における衝撃点
B 衝撃点Aと第2垂直面に対して対象の位置にある衝撃点
P 衝撃点Aと頭頂を含む第1垂直面
Q 頭頂を含み第1垂直面に直角に交わる第2垂直面
R 帽体の高さ方向の中央にある水平面
1 Attachment part 2 Central part A Impact point B on the cap body Impact point P located at the target position with respect to the impact point A and the second vertical plane First vertical plane Q that includes the impact point A and the top of the head First vertical plane that includes the top of the head Second vertical plane R that intersects at right angles to the horizontal plane in the center of the cap body in the height direction

Claims (3)

帽体の内側にあるアーチ状であり、張力を有する素材からなる第1の衝撃吸収する構造であって、アーチ状の長手方向の両端は、帽体への取付部(1)であり、帽体の頭頂を中心として曲面での直径10cmの円の円内範囲以外の帽体への衝撃点(A)を考え、衝撃点(A)と頭頂を含む第1垂直面(P)と、頭頂を含み第1垂直面(P)に直角に交わる第2垂直面(Q)と、高さ方向の中央にある第1水平面(R)で、帽体を8分割したとき、帽体の取付部(1)が、第2垂直面(Q)で切断された衝撃点(A)を含まない帽体部分であって、第1水平面(R)より下部であって、第1垂直面(P)の左右にあり、アーチ状の長手方向の中央部(2)が、衝撃点(A)における法線の帽体内曲面の交点の近傍に配置され、前記衝撃点(A)における法線の帽体内曲面の前記交点と間に距離を有する前記第1の衝撃吸収する構造と、
前記第2垂直面(Q)に対して前記第1の衝撃吸収する構造と対称に位置する第2の衝撃吸収する構造と、を備え、
前記第1の衝撃吸収する構造と前記第2の衝撃吸収する構造との交差している部分が相互に連結されている
衝撃吸収する構造
A first shock - absorbing structure having an arch shape inside the cap body and made of a material having tension , and both ends of the arch shape in the longitudinal direction are attachment parts (1) to the cap body; Consider an impact point (A) on the cap body other than the range within a circle with a diameter of 10 cm on a curved surface centered on the top of the cap body, and a first vertical plane (P) including the impact point (A) and the top of the head, When the cap body is divided into eight parts by the second vertical plane (Q) that includes the top of the head and intersects at right angles to the first vertical plane (P), and the first horizontal plane (R) located at the center in the height direction, the cap body is attached. Part (1) is a part of the cap body that does not include the point of impact (A) cut by the second vertical plane (Q), is lower than the first horizontal plane (R), and is located below the first vertical plane (P ), the arched longitudinal central portions (2) are arranged near the intersection of the normal line at the point of impact (A) and the curved surface of the inside of the cap; the first impact - absorbing structure having a distance between the intersection point of the internal curved surface ;
a second impact - absorbing structure located symmetrically to the first impact- absorbing structure with respect to the second vertical plane (Q);
An impact - absorbing structure , wherein the first impact - absorbing structure and the second impact-absorbing structure intersect with each other and are interconnected .
帽体と、
帽体の内側にあるアーチ状であり、張力を有する素材からなる第1の衝撃吸収する構造であって、アーチ状の長手方向の両端は、帽体への取付部(1)であり、帽体の頭頂を中心として曲面での直径10cmの円の円内範囲以外の帽体への衝撃点(A)を考え、衝撃点(A)と頭頂を含む第1垂直面(P)と、頭頂を含み第1垂直面(P)に直角に交わる第2垂直面(Q)と、高さ方向の中央にある第1水平面(R)で、帽体を8分割したとき、帽体の取付部(1)が、第2垂直面(Q)で切断された衝撃点(A)を含まない帽体部分であって、第1水平面(R)より下部であって、第1垂直面(P)の左右にあり、アーチ状の長手方向の中央部(2)が、衝撃点(A)における法線の帽体内曲面の交点の近傍に配置され、前記衝撃点(A)における法線の帽体内曲面の前記交点と間に距離を有する前記第1の衝撃吸収する構造と、
前記第2垂直面(Q)に対して前記第1の衝撃吸収する構造と対称に位置する第2の衝撃吸収する構造と、を備え、
前記第1の衝撃吸収する構造と前記第2の衝撃吸収する構造との交差している部分が相互に連結されている
ヘルメット。
The cap body and
A first shock - absorbing structure having an arch shape inside the cap body and made of a material having tension , and both ends of the arch shape in the longitudinal direction are attachment parts (1) to the cap body; Consider an impact point (A) on the cap body other than the range within a circle with a diameter of 10 cm on a curved surface centered on the top of the cap body, and a first vertical plane (P) including the impact point (A) and the top of the head, When the cap body is divided into eight parts by the second vertical plane (Q) that includes the top of the head and intersects at right angles to the first vertical plane (P), and the first horizontal plane (R) located at the center in the height direction, the cap body is attached. Part (1) is a part of the cap body that does not include the point of impact (A) cut by the second vertical plane (Q), is lower than the first horizontal plane (R), and is located below the first vertical plane (P ), the arched longitudinal central portions (2) are arranged near the intersection of the normal line at the point of impact (A) and the curved surface of the inside of the cap; the first impact - absorbing structure having a distance between the intersection point of the internal curved surface ;
a second impact - absorbing structure located symmetrically to the first impact- absorbing structure with respect to the second vertical plane (Q);
A helmet in which the intersecting portions of the first impact - absorbing structure and the second impact - absorbing structure are interconnected.
前記第1の衝撃吸収する構造と前記第2の衝撃吸収する構造とが、第3の衝撃吸収する構造であり、
前記第3の衝撃吸収する構造を帽体の頭入口の円周の円周方向に時計周りで90度回転させた衝撃吸収する構造を第4の衝撃吸収する構造としたとき、前記第4の衝撃吸収する構造をさらに備える
請求項2に記載のヘルメット。
The first impact absorbing structure and the second impact absorbing structure are a third impact absorbing structure ,
When the third impact - absorbing structure is rotated 90 degrees clockwise in the circumferential direction of the circumference of the head entrance of the cap body and the fourth impact - absorbing structure is the fourth impact - absorbing structure , The helmet according to claim 2, further comprising a fourth impact absorbing structure .
JP2018180233A 2018-09-26 2018-09-26 Shock-absorbing structure, and helmet Active JP7363020B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006188771A (en) 2004-12-28 2006-07-20 Tanizawa Seisakusho Ltd Helmet
US20170112222A1 (en) 2015-10-27 2017-04-27 KASK S.p.A. Forehead support band for helmets and helmet provided with such forehead support band

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289210U (en) * 1975-12-25 1977-07-04
FR2687902B1 (en) * 1992-02-27 1997-03-21 Petzl Ets SAFETY HELMET WITH ADJUSTMENT OF THE HOLDING DEVICE ON THE HEAD.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006188771A (en) 2004-12-28 2006-07-20 Tanizawa Seisakusho Ltd Helmet
US20170112222A1 (en) 2015-10-27 2017-04-27 KASK S.p.A. Forehead support band for helmets and helmet provided with such forehead support band
CN106605994A (en) 2015-10-27 2017-05-03 卡斯克股份公司 Forehead support band for helmets and helmet provided with such forehead support band

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