JP7296165B1 - training hurdles - Google Patents

training hurdles Download PDF

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JP7296165B1
JP7296165B1 JP2022133534A JP2022133534A JP7296165B1 JP 7296165 B1 JP7296165 B1 JP 7296165B1 JP 2022133534 A JP2022133534 A JP 2022133534A JP 2022133534 A JP2022133534 A JP 2022133534A JP 7296165 B1 JP7296165 B1 JP 7296165B1
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hurdle
training
shaped member
hole
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幸治 岡崎
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有限会社氷川工作所
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Abstract

【課題】躓いたり踏んづけたりしても、それが原因で競技者が怪我をしないで済み、横転しづらいか若しくは横転してもそのまま使用可能なトレーニング用ハードルを提供する。【解決手段】全体がクッション材のみにより構成されたトレーニング用ハードル1において、互いに同じの、最大高さH、最大幅W、最大厚さTの一方の板状部材3および他方の板状部材5と、一方の板状部材と他方の板状部材を連結する屈曲連結部7と、を含み、最大幅Wを横切る断面が略L字状に構成され、他方の板状部材を走行面上に置いたときに一方の板状部材が起立可能に全体構成されている。クッション材による全体構成なので、躓き・踏んづけで使用者が怪我をしない。一方又は他方が常に起立するため、置くときの方向を選ばず、また、横転してもすぐに使用可能な状態になる。安全で便利である。【選択図】図1To provide a training hurdle that prevents a player from being injured even if the hurdle is tripped or stepped on and is not easily overturned or can be used as it is even if it is overturned. A training hurdle 1 entirely composed of only a cushion material, one plate-like member 3 and the other plate-like member 5 having the same maximum height H, maximum width W, and maximum thickness T. and a bent connecting portion 7 for connecting one plate-shaped member and the other plate-shaped member, the cross section across the maximum width W is configured in a substantially L shape, and the other plate-shaped member is placed on the running surface. The overall configuration is such that one plate-like member can stand up when placed. Since the entire structure is made of cushion material, the user will not be injured by stumbling or stepping on it. Since one or the other always stands upright, it can be put in any direction, and even if it rolls over, it can be used immediately. Safe and convenient. [Selection drawing] Fig. 1

Description

陸上競技のハードル競争やサッカー等の競技のトレーニング用に好適でかつ安全なトレーニング用ハードル(以下、適宜「ハードル」と略称する)に関するものである。 The present invention relates to a training hurdle (hereinafter abbreviated as "hurdle" as appropriate) that is suitable and safe for training in hurdle races in track and field, soccer, and other sports.

特許文献1は、陸上競技に用いられる一般的なハードルであって、柔軟性のあるハードルバーと、ハードルバーとハードル基台との間に介在する衝撃吸収装置を有するものを開示する(特許文献1のハードル)。特許文献1のハードルは、ハードルバーに足を躓いた際に競技者が受ける衝撃を減少させることを目的とする。特許文献2は、発泡材からなる基台と、基台の上に固定可能な同じく発泡材からなる高さ調整ブロックとを有する安全ハードルを開示する(特許文献2のハードル)。横から見たときの基台は、走者にとって手前側が垂直面、同じく向こう側が若干の角度で傾斜する台形に形成されている。 Patent Literature 1 discloses a general hurdle used in athletics, which has a flexible hurdle bar and a shock absorbing device interposed between the hurdle bar and the hurdle base (Patent Literature 1). 1 hurdle). The hurdle of Patent Literature 1 aims to reduce the impact that a player receives when tripping over a hurdle bar. Patent Document 2 discloses a safety hurdle having a base made of foam material and a height adjustment block also made of foam material and fixable on the base (hurdle of Patent Document 2). When viewed from the side, the base is shaped like a trapezoid with a vertical plane in front of the runner and a slight angle on the other side.

実開平2-121100号公報Japanese Utility Model Laid-Open No. 2-121100 実開昭59-150500号公報Japanese Utility Model Laid-Open No. 59-150500

しかしながら、特許文献1のハードルは、ハードルバーに躓いた足が受ける衝撃は減少できても、基台は柔軟性のある素材で構成されているわけではない。このため、特許文献1のハードルでは、ハードル自体を倒した時に横になった基台によって競技者が怪我をしてしまう恐れが高いという欠点がある。 However, although the hurdle of Patent Document 1 can reduce the impact received by a foot tripping over the hurdle bar, the base is not made of a flexible material. For this reason, the hurdle of Patent Literature 1 has a drawback in that when the hurdle itself is knocked down, there is a high possibility that the player will be injured by the base on which the hurdle is laid down.

また、特許文献2のハードルは、全体が発泡材により構成されているので、練習者が足を躓いたり踏んづけたりしても、その衝撃は変形吸収するので競技者が怪我をする恐れは低い。しかし、走者にとって手前が垂直面の台形をしているため、練習者による躓いや踏んづけにより簡単に横転してしまいし、横転によりハードルの高さが変化してしまう。このため、横転するごとにハードルを正しい姿勢に直さなくてはならず、したがって、効率のよいトレーニングがしづらいという欠点がある。 In addition, since the hurdle of Patent Document 2 is entirely made of a foam material, even if a practicer trips or steps on the hurdle, the impact is deformed and absorbed, so the risk of injury to the player is low. However, since the front of the runner has a trapezoid with a vertical surface, it easily rolls over due to tripping or stepping on by the trainee, and the height of the hurdle changes due to the rollover. For this reason, the hurdle must be adjusted to the correct posture each time it rolls over, which has the drawback of making it difficult to perform efficient training.

本発明が解決しようとする課題は、前記欠点を補うことにあり、躓いたり踏んづけたりしても、それが原因で競技者が怪我をしないで済み、横転しづらいか若しくは横転してもそのまま使用可能なトレーニング用ハードルを提供することにある。 The problem to be solved by the present invention is to compensate for the above-mentioned drawbacks. To provide possible training hurdles.

上記欠点を改善するため本発明では、全体がクッション材のみにより構成されたトレーニング用ハードルにおいて、次の構成を備えている。なお、説明の都合上「一方」と「他方」という表現を用いるが、これは二つあるもののうち何れかを特定する趣旨ではない。 In order to improve the above-mentioned drawbacks, the present invention provides a training hurdle entirely composed of only a cushioning material, and has the following configuration. For convenience of explanation, the expressions "one side" and "the other side" are used, but this does not mean to specify one of the two.

(請求項1記載の発明の特徴)
請求項1記載の発明に係るトレーニング用ハードル(以下、「請求項1のハードル」という)は、全体がクッション材のみにより構成されたトレーニング用ハードルである。請求項1のハードルは、互いに同じの、最大高さH、最大幅W、最大厚さTの一方の板状部材と、当該一方の板状部材と当該他方の板状部材を連結する屈曲連結部と、を含み、最大幅Wを横切る断面が略L字状に構成され、当該他方の板状部材を走行面(地面や体育館の床面などトレーニングする床面)の上に置いたときに当該一方の板状部材が起立可能に全体構成され、当該一方の板状部材の最大厚さT方向には、風荷重軽減のための通風孔が少なくとも1個貫通形成され、当該少なくとも1個の通風孔は、孔内壁に囲まれており、当該孔内壁の軸方向途中には、周方向全長から中心に向かって突出する環状膨出部が形成されている、ことを特徴とする。
(Features of the invention described in claim 1)
A training hurdle according to the invention of claim 1 (hereinafter referred to as "the hurdle of claim 1") is a training hurdle entirely composed of only a cushioning material. The hurdle of claim 1 includes one plate-shaped member having the same maximum height H, maximum width W, and maximum thickness T, and a bending connection that connects the one plate-shaped member and the other plate-shaped member. and a cross section across the maximum width W is configured in a substantially L shape, and when the other plate-shaped member is placed on a running surface (a training floor such as the ground or the floor of a gymnasium) The one plate-shaped member is configured to be able to stand upright, and at least one ventilation hole for reducing wind load is formed through the one plate-shaped member in the direction of the maximum thickness T, and the at least one The ventilation hole is surrounded by an inner wall of the hole, and is characterized in that an annular bulging portion is formed in the middle of the inner wall of the hole in the axial direction and protrudes from the entire length in the circumferential direction toward the center.

請求項1のハードルによれば、全体がクッション材のみ、つまり、クッション材以外の素材を含まないので、躓いたり踏んづけたりしたときに十分に変形して衝撃吸収してくれる。このため安全にトレーニングすることができる。他方の板状部材を走行面上におけば一方の板状部材が自立するから、これにより飛び越したり跨いだりするトレーニング用のハードルとして準備が整う。なお、トレーニングする者、すなわちトレーニーから見た請求項1のハードルは、前後を問わない。つまり、他方の板状部材が一方の板状部材の手前にあっても後ろ側にあってもトレーニング可能である。また、トレーニングは体育館のような屋内の場合もあるが、屋外のグランドなどで行う場合もある。軽量であるため屋外に設置すると風の影響を受けて横転しやすくなるが、請求項1のハードルによれば通風孔が衝突した風を逃がすので、その分、風荷重が軽減されて横転をしづらくする。また、クッション材のみの構成は、破損しづらくし軽量化に貢献する。通風孔の形成は、トレーニング用ハードルを、より変形しやすく、また軽量化する。さらに、環状膨出部の突出がその分だけ通風孔を狭くすることになるから、通風方向から見た通風孔の断面積は、広い、狭い、広い、の順で径が変化してベンチュリ管に似た構成となる。これを狭い部分から広い部分に圧力面から見ると、ベンチュリ効果により、断面積の狭い部分によって一端低くなった風圧が下流の広い部分に向かって高まり、その結果、流体(空気)の剥離が生じる。これにより乱流が発生して通過方向の空気と衝突してエネルギーを損失させる。つまり、風のエネルギーを減少させてハードルの転倒を抑制する。つまり、ハードルがより倒れづらくなる。 According to the hurdle of claim 1, the entire hurdle contains only the cushioning material, that is, it does not include any material other than the cushioning material, so that it is sufficiently deformed to absorb impact when a person stumbles or steps on it. Therefore, you can train safely. If the other plate-like member is placed on the running surface, one of the plate-like members will stand on its own, so that it is ready for training as a hurdle to be jumped or straddled. It should be noted that the hurdles in claim 1 seen from the trainee, i.e., the trainee, do not matter in front or back. In other words, training is possible whether the other plate-like member is in front of or behind the other plate-like member. In addition, training may be performed indoors such as a gymnasium, but may also be performed outdoors such as on a ground. Because of its light weight, it tends to overturn due to the influence of the wind when installed outdoors. make it difficult In addition, the structure of only the cushioning material contributes to the weight reduction as it is hard to be damaged. Forming the ventilation holes makes the training hurdle more flexible and lighter. Furthermore, since the protrusion of the annular bulging portion narrows the ventilation hole by that amount, the cross-sectional area of the ventilation hole when viewed from the direction of ventilation changes in the order of wide, narrow, and wide, and the diameter of the venturi tube changes. It has a configuration similar to Looking at this from the narrow part to the wide part from the pressure side, due to the venturi effect, the wind pressure, which is temporarily lowered due to the narrow cross-sectional area, increases toward the wide part downstream, resulting in fluid (air) separation. . This creates turbulence that collides with the air in the direction of passage and loses energy. In other words, the energy of the wind is reduced to suppress the overturning of the hurdles. In other words, the hurdle becomes more difficult to fall down.

(請求項記載の発明の特徴)
請求項記載の発明に係るトレーニング用ハードル(以下、「請求項のハードル」という)は、請求項のハードルの好ましい形態として、前記一方の板状部材を走行面上に置いたときに前記他方の板状部材をも起立可能に全体構成され、前記他方の板状部材の厚さT方向にも、風荷重軽減のための通風孔が少なくとも1個貫通形成されている、ことを特徴とする。
(Features of the invention described in claim 2 )
A training hurdle according to the invention of claim 2 (hereinafter referred to as "the hurdle of claim 2 ") is, as a preferred form of the hurdle of claim 1 , when the one plate member is placed on the running surface, It is characterized in that the other plate-like member is also constructed so that it can stand upright, and at least one ventilation hole for reducing wind load is formed through the other plate-like member in the direction of thickness T of the other plate-like member. and

請求項のハードルによれば、一方の板状部材と他方の板状部材とを区別することなく、何れかの板状部材を走行面上に置いたとき他の板状部材が起立する。いずれの板状部材が起立しても、そこには通風孔が開口している。しかも、トレーニーから見て前後を問わない。したがって、走行面上において走行方向を横切るようにトレーニング用ハードルを置いただけでトレーニングを開始ないし再開することができるので、とても使い勝手がよくなる。 According to the hurdle of claim 2 , without distinguishing between one plate-like member and the other plate-like member, when any plate-like member is placed on the running surface, the other plate-like member stands up. Even if any plate-like member is erected, a ventilation hole is opened there. Moreover, from the trainee's point of view, it doesn't matter where it is. Therefore, training can be started or resumed simply by placing training hurdles across the running direction on the running surface, which is very convenient.

(請求項3記載の発明の特徴)
請求項3記載の発明に係るトレーニング用ハードル(以下、「請求項3のハードル」という)は、請求項2のハードルの好ましい態様として、前記他方の板状部材に貫通形成されている少なくとも1個の通風孔は、孔内壁に囲まれており、当該孔内壁の軸方向途中には、周方向全長から中心に向かって突出する環状膨出部が形成されている、ことを特徴とする。
(Features of the invention described in claim 3)
A training hurdle according to the invention of claim 3 (hereinafter referred to as "the hurdle of claim 3") is a preferred embodiment of the hurdle of claim 2. At least one hurdle penetrates through the other plate member. is surrounded by an inner wall of the hole, and is characterized in that an annular bulging portion protruding toward the center from the entire length in the circumferential direction is formed in the middle of the inner wall of the hole in the axial direction.

請求項のハードルによれば、環状膨出部の突出がその分だけ通風孔を狭くすることになるから、通風方向から見た通風孔の断面積は、広い、狭い、広い、の順で径が変化してベンチュリ管に似た構成となる。これを狭い部分から広い部分に圧力面から見ると、ベンチュリ効果により、断面積の狭い部分によって一端低くなった風圧が下流の広い部分に向かって高まり、その結果、流体(空気)の剥離が生じる。これにより乱流が発生して通過方向の空気と衝突してエネルギーを損失させる。つまり、風のエネルギーを減少させてハードルの転倒を抑制する。つまり、ハードルがより倒れづらくなる。 According to the hurdle of claim 3 , since the projection of the annular bulging portion narrows the ventilation hole by that amount, the cross-sectional area of the ventilation hole when viewed from the direction of ventilation is wide, narrow, and wide in this order. The diameter changes to a configuration similar to a venturi tube. Looking at this from the narrow part to the wide part from the pressure side, due to the venturi effect, the wind pressure, which is temporarily lowered due to the narrow cross-sectional area, increases toward the wide part downstream, resulting in fluid (air) separation. . This creates turbulence that collides with the air in the direction of passage and loses energy. In other words, the energy of the wind is reduced to suppress the overturning of the hurdles. In other words, the hurdle becomes more difficult to fall down.

本発明によれば、躓いたり踏んづけたりしても、それが原因で競技者が怪我をしないで済み、横転しづらいか若しくは横転してもそのまま使用可能なトレーニング用ハードルを提供するこができる。 According to the present invention, it is possible to provide a training hurdle that prevents a player from being injured even if the hurdle is tripped or stepped on, and is difficult to overturn or can be used as it is even if overturned.

一方の板状部材を走行面上に置いた(以下、図4を除いて同じ)トレーニン グ用ハードル(ハードル)の部分斜視図である。1 is a partial perspective view of a training hurdle (hurdle) in which one plate member is placed on a running surface (hereinafter the same except for FIG. 4); FIG. ハードルの正面図である。It is a front view of a hurdle. ハードルの背面図である。It is a rear view of a hurdle. ハードルの平面図(上から見た図)である。It is a top view (view seen from above) of the hurdle. 第1変形例に係るハードルの正面図である。It is a front view of a hurdle according to a first modification. 第2変形例に係るハードルの正面図である。It is a front view of the hurdle which concerns on a 2nd modification. 通風孔の縦断面を示す部分拡大図である。It is the elements on larger scale which show the vertical cross section of a ventilation hole. ハードルの左斜視図である(右斜視図は左右線対称に表れる)。Fig. 3 is a left perspective view of the hurdle (a right perspective view appears symmetrical); 好ましい通風孔の縦断面を示す部分拡大図である。FIG. 4 is a partial enlarged view showing a vertical cross-section of a preferable ventilation hole; ハードルの使用状態を示す右側面図である。It is a right view which shows the use condition of a hurdle. ハードルの前後を入れ替えて使用する状態を示す左断面図である。It is a left cross-sectional view showing a state in which the front and rear of the hurdle are exchanged for use. ハードルを逆立ちさせて使用する状態を示す右断面図である。It is a right cross-sectional view showing a state in which the hurdle is used in an upright position. 競技者の靴によって踏みつけられて変形するハードルの右断面図である。FIG. 10 is a right cross-sectional view of a hurdle being deformed by being stepped on by a player's shoes; 競技者の靴によって踏みつけられて変形するハードルの左断面図である。Fig. 10 is a left cross-sectional view of a hurdle being deformed by being stepped on by a player's shoe; 競技者の靴によって躓いられて横転するハードルの右断面図である。FIG. 4 is a right cross-sectional view of a hurdle that is tripped over by a player's shoes and overturned; ロープでつないでラダートレーニング用のハードルとして使用する状態の 右側面図である。Fig. 4 is a right side view of a state in which the hurdles are connected with a rope and used as hurdles for ladder training.

(ハードルの概略構造)
発明を実施するための形態(以下、「本実施形態」という)の説明を行う。図1および2に示す符号1は、ハードルを示す。ハードル1は、一方の板状部材3(以下、単に「板状部材3」という)および他方の板状部材5(以下、単に「板状部材5」という)と、板状部材3と板状部材5を連結する屈曲連結部7と、を含み、幅Wを横切る断面(縦断面)が略L字状に構成され、板状部材5を走行面G(図9)の上に置いたときに板状部材3が起立可能に全体構成されている。
(Schematic structure of the hurdle)
A mode for carrying out the invention (hereinafter referred to as "this embodiment") will be described. Reference numeral 1 shown in FIGS. 1 and 2 indicates a hurdle. The hurdle 1 consists of one plate-like member 3 (hereinafter simply referred to as "plate-like member 3") and the other plate-like member 5 (hereinafter simply referred to as "plate-like member 5"), the plate-like member 3 and the plate-like member. When the plate-like member 5 is placed on the running surface G (FIG. 9), the section (longitudinal section) crossing the width W is substantially L-shaped. A plate-like member 3 is constructed as a whole so as to be able to stand up.

ここで、説明のみのために、方向を定義する。すなわち、図1に示す状態のハードル1において、板状部材5を走行面G(図9)の上に置いて板状部材3が起立させたときの起立方向を上、逆を下とする。さらに、後に板状部材5を配したときの板状部材3の手前を前とする。したがって、図2はハードル1の正面図となり、図3は同じく背面図になる。板状部材3の左方向が左、右方向が右になる。したがって、図8はハードル1右側面図になる。 Here, the directions are defined for illustration only. That is, in the hurdle 1 in the state shown in FIG. 1, when the plate-like member 5 is placed on the running surface G (FIG. 9) and the plate-like member 3 is raised, the upright direction is the upside, and the opposite is the downside. Further, the front side of the plate-like member 3 when the plate-like member 5 is arranged later is referred to as the front. Therefore, FIG. 2 is a front view of the hurdle 1, and FIG. 3 is a rear view of the same. The left direction of the plate member 3 is left, and the right direction is right. Therefore, FIG. 8 is a right side view of the hurdle 1. FIG.

(ハードルの素材)
ハードル1全体は、クッション材のみによって一体構成されている。クッション材以外の硬い素材(たとえば、金属)を含まない。躓いたり踏んづけたりしたときに十分に変形して衝撃を吸収するとともに、硬いものから競技者を守るためである。複数種のクッション材によって構成されている場合も含む。クッション材としては、たとえば、ウレタン(ポリウレタン)や発泡ゴムなどがある。合成スポンジはウレタンの一種である。ウレタンには、発泡させた発泡ウレタンや、発泡させていない非発泡ウレタンがある。ハードル1が求める衝撃吸収性と自立性等を満足させるため、配合剤や発泡度合いなどを調整して硬度を決めるとよい。発泡ゴムは、天然ボムや合成ゴムのラテックスを機械的又は化学的に泡立てて固め加硫してつくるのが一般的である。クッション材には、これに表面塗装や装飾などを施したものも含まれる。好みにより、彩色したり文字や模様などを描いたりすることもできる。本実施形態のハードル1は発泡ウレタンで構成され、両端面を除く表面には、発泡による凹凸を埋めて耐久性を高めるためのコーティングが施されている。
(Hurdle material)
The entire hurdle 1 is integrally constructed only with a cushioning material. Does not contain hard materials (e.g. metal) other than cushioning. This is so that when a player stumbles or steps on it, it deforms sufficiently to absorb the impact and protect the player from hard objects. It also includes the case where it is composed of a plurality of types of cushioning materials. Examples of cushion materials include urethane (polyurethane) and foam rubber. Synthetic sponge is a type of urethane. Urethane includes foamed urethane that has been foamed and non-foamed urethane that has not been foamed. In order to satisfy the impact absorption and self-supporting properties required by the hurdle 1, it is preferable to determine the hardness by adjusting the compounding agents and the degree of foaming. Foamed rubber is generally produced by mechanically or chemically foaming natural bomb or synthetic rubber latex, solidifying and vulcanizing it. The cushioning material also includes those to which surface coating or decoration is applied. Depending on your preference, you can also color and draw letters and patterns. The hurdle 1 of this embodiment is made of foamed urethane, and the surface, excluding both end faces, is coated with a coating to fill the irregularities due to foaming and increase durability.

(一方の板状部材の構成)
図2ないし3に示すように、一方の板状部材3は、最大高さH、最大幅W、最大厚さTの長方形類似の板状部材である。ここで、「最大」と表現したのは、クッション部材のみで構成されているため、板状部材3の表面が平面になりにくく、また寸法にバラつきが生じやすいからである。好ましい態様の板状部材3は、正面からみたときの一番高いところから手前に向かって、最大高さHの3分の1程まで丸みが形成されている。この丸みがあることにより、角部の破損がしにくくなる。本実施形態の板状部材3の寸法は、最大高さH5cm、最大幅W30cm、最大厚さT3cmであるが、たとえば、最大高さHが4~10cm、同じく最大幅Wが25~45cm、最大厚さTが1.5~3,5cmの範囲で調整可能である。これらの寸法例は、子供から大人を含めた競技者1人がトレーニングすることを前提としているので、競技者の範囲やトレーニング目的に応じて変更可能である。たとえば競技者2人を前提とするのであれば、最大幅Wを上記寸法の2倍もしくはそれ以上に設定する必要がある。
(Structure of one plate member)
As shown in FIGS. 2 and 3, one plate-like member 3 is a rectangular plate-like member having a maximum height H, a maximum width W, and a maximum thickness T. As shown in FIGS. The reason why the term "maximum" is used here is that since the plate-like member 3 is composed only of the cushion member, the surface of the plate-like member 3 is unlikely to be flat and the dimensions are likely to vary. The plate-shaped member 3 of the preferred embodiment is rounded from the highest point when viewed from the front to about one-third of the maximum height H toward the front. Due to this roundness, the corners are less likely to be damaged. The dimensions of the plate member 3 of this embodiment are a maximum height H of 5 cm, a maximum width W of 30 cm, and a maximum thickness T of 3 cm. The thickness T can be adjusted within the range of 1.5 to 3.5 cm. These size examples are based on the assumption that one athlete, including children and adults, will be training, so they can be changed according to the range of athletes and training objectives. For example, if two players are assumed, the maximum width W must be set to twice the above dimensions or more.

(通風孔の構成)
好ましい態様の板状部材3の厚さT方向には、風荷重軽減のための通風孔13が7個貫通形成されている。風荷重軽減により、特に屋外使用時において受風によるハードル1の横転を抑制するためである。通風孔13の形成は、ハードル1全体の軽量化にも資する。通風孔13の形状や個数には、上記した横転抑制や軽量化という目的から外れない範囲であれば特に制限はない。本実施形態のハードル1は、それぞれ正面視の最大径D2.5cmであって、板状部材3の幅方向Wに沿って並ぶ7個の通風孔13を備えている(図3)。上記寸法例における通風孔13の最大径Dは、たとえば、20~40cm程度が好ましい。なお、板状部材3の通風孔13は、製造者がこれを不要と考えるなら省略することを妨げない。
(Configuration of ventilation holes)
Seven ventilation holes 13 for reducing the wind load are formed through the thickness T direction of the plate member 3 of the preferred embodiment. This is because the reduction of the wind load suppresses overturning of the hurdle 1 due to the wind, especially when it is used outdoors. The formation of the ventilation holes 13 also contributes to weight reduction of the hurdle 1 as a whole. The shape and number of the ventilation holes 13 are not particularly limited as long as they do not deviate from the above-described objectives of suppressing overturning and reducing weight. The hurdle 1 of this embodiment has a maximum diameter D of 2.5 cm when viewed from the front, and includes seven ventilation holes 13 arranged along the width direction W of the plate member 3 (FIG. 3). The maximum diameter D of the ventilation hole 13 in the above dimension example is preferably, for example, approximately 20 to 40 cm. Note that the ventilation holes 13 of the plate member 3 may be omitted if the manufacturer considers them unnecessary.

風荷重軽減を目的とする通風孔13は、上述のとおり本実施形態では7個であるが、その目的の範囲内において少なくとも1個あればよく、6個以下でも8個以上でも構わない。先に説明したように本実施形態の通風孔13はどれも円形に形成してあるが、たとえば、円形と四角形を混在させるなど一部又は全部を相異なる形状に形成してもよい。図5に示す第1変形例のハードル1Aの板状部材3には、楕円形の通風孔23が横並びに2個が貫通形成され、これに併せて環状膨出部23aが突出形成されている。さらに図6に示す第2変形例のハードル1Bには、中央部が上から下に凹んだ変形四角形の通風孔33が1個、貫通形成され、これに併せて環状膨出部33aが突出形成されている。 As described above, the number of ventilation holes 13 for the purpose of reducing the wind load is seven in this embodiment. As described above, the ventilation holes 13 of the present embodiment are all formed in a circular shape, but they may be formed in different shapes partially or entirely, for example, by mixing a circular shape and a square shape. In the plate-like member 3 of the hurdle 1A of the first modified example shown in FIG. 5, two elliptical ventilation holes 23 are formed side by side through the plate-like member 3, and an annular bulging portion 23a is also formed to protrude therefrom. . Further, in the hurdle 1B of the second modified example shown in FIG. 6, one deformed quadrangular ventilation hole 33 whose center part is recessed from top to bottom is formed through the hurdle 1B. It is

(通風孔の内部形状)
通風孔13の縦断面は、図7に示すように通風方向に沿って真っ直ぐ、つまり孔内壁13aの孔径一定でもよいが、図2、3及び8、9に示すように、環状膨出部13bを設けることが好ましい。環状膨出部13bは、孔内壁の軸方向途中にあって、周方向全長から中心に向かって突出する部位である。環状膨出部13bの突出により、その分だけ通風孔を狭くすることになるから、図8および9が最もよく示すように矢印で示す通風方向から見た通風孔の断面積は、図9に示すように、広い、狭い、広い、の順で径が変化してベンチュリ管に似た構成となる。換言すると、環状膨出部13bは、通風孔13にベンチュリ効果を発揮させるためのものである。そのため環状膨出部13bの断面形状は、流体である風が極端に停滞しないように、なだらかな小さい山(バスタブの底)に似た形状が好ましい。
(Internal shape of ventilation hole)
The longitudinal section of the ventilation hole 13 may be straight along the ventilation direction as shown in FIG. 7, that is, the diameter of the hole inner wall 13a may be constant. is preferably provided. The annular bulging portion 13b is located in the middle of the inner wall of the hole in the axial direction and protrudes from the entire length in the circumferential direction toward the center. The projection of the annular bulging portion 13b narrows the ventilation hole by that much, so as best shown in FIGS. As shown, the diameter changes from wide to narrow to wide, resulting in a Venturi-like configuration. In other words, the annular bulging portion 13b is for causing the ventilation hole 13 to exert a venturi effect. Therefore, the cross-sectional shape of the annular bulging portion 13b is preferably a shape resembling a gentle small mountain (bottom of a bathtub) so that the wind, which is a fluid, does not stagnate excessively.

ベンチュリ効果により通風孔13を風(空気)が通過するとき、断面積の狭い部分によって一端低くなった風圧が下流の広い部分に向かって高まり、その結果、空気の剥離(Separation)が生じる(図9の矢印S)。これにより乱流(Turbulence)が発生する(図9の矢印T)。乱流は通過方向の空気と衝突してエネルギーを損失させる。つまり、風のエネルギーを減少させてハードルの転倒を抑制する。つまり、ハードルがより倒れづらくなる。 When the wind (air) passes through the ventilation holes 13 due to the venturi effect, the wind pressure, which is temporarily lowered due to the narrow cross-sectional area, rises toward the wider downstream portion, resulting in air separation (Fig. 9 arrow S). This causes turbulence (arrow T in FIG. 9). Turbulent flow collides with air in the direction of passage and loses energy. In other words, the energy of the wind is reduced to suppress the overturning of the hurdles. In other words, the hurdle becomes more difficult to fall down.

(他方の板状部材の構成)
次は、板状部材5について説明する。板状部材5は、好ましくは板状部材3と互いに実質的同形に構成することが好ましい。互いに異なる形状を否定する意味ではないが、同形構成することによって、何れを走行面Gの上に置いても他方が起立する、すなわち、置き方を問わないので使い勝手が格段によくなるからである。よって、板状部材5の説明は基本的に省略するが、板状部材3と板状部材5とを区別しやすいように、部材番号だけを異ならせてある。
(Structure of the other plate member)
Next, the plate member 5 will be explained. It is preferable that the plate-like member 5 and the plate-like member 3 have substantially the same shape. This is not meant to deny different shapes from each other, but by constructing them in the same shape, even if one of them is placed on the running surface G, the other stands upright. Therefore, the description of the plate-like member 5 is basically omitted, but only the member numbers are different so that the plate-like members 3 and 5 can be easily distinguished.

すなわち、図2ないし4において、板状部材3の通風孔13に対応する板状部材5の通風孔の符号を15と、同じく環状膨出部13bに対応する環状膨出部の符号を15bと、それぞれ記載してある。図5において板状部材3の通風孔23(環状膨出部23b)に対応させて板状部材5の通風孔の符号を25(25b)と記載してある。同様に図6において板状部材3の通風孔33(環状膨出部33b)に対応させて板状部材5の通風孔の符号を35(35b)と記載してある。 That is, in FIGS. 2 to 4, the reference numeral 15 is assigned to the ventilation holes of the plate-like member 5 corresponding to the ventilation holes 13 of the plate-like member 3, and the reference numeral 15b is assigned to the annular bulging portion corresponding to the annular bulging portion 13b. , respectively. In FIG. 5, the reference numerals of the ventilation holes of the plate-like member 5 are indicated as 25 (25b) corresponding to the ventilation holes 23 (annular swelling portion 23b) of the plate-like member 3. As shown in FIG. Similarly, in FIG. 6, the reference numeral 35 (35b) of the ventilation hole of the plate-like member 5 corresponds to the ventilation hole 33 (annular bulging portion 33b) of the plate-like member 3. As shown in FIG.

(屈曲連結部の構成)
屈曲連結部7は、板状部材3と板状部材5とを連結し、両板状部材を含め断面略L字状を一体形成する部位である。屈曲連結部7の角部7aは、図1および8に示すように丸みを持たせておくとよい。角張っていると、その部位の発泡ウレタンのちぎれ防止のためである。なお、本願において「L字状」とあるが、これは板状部材3と板状部材5とが互いに直交していなければならないという意味では必ずしもなく、実質的にL字に類似する位置関係であることを示す。
(Structure of bent joint)
The bending connecting portion 7 is a portion that connects the plate-like member 3 and the plate-like member 5 and integrally forms a substantially L-shaped cross section including both plate-like members. The corners 7a of the bent joint 7 are preferably rounded as shown in FIGS. If it is angular, it is to prevent tearing of the urethane foam at that portion. In the present application, the term "L-shaped" does not necessarily mean that the plate-shaped member 3 and the plate-shaped member 5 must be orthogonal to each other, and the positional relationship is substantially similar to an L-shape. indicates that there is

(ハードルの製造方法)
本実施形態のハードル1は発泡ウレタンで構成されているため、ハードル1の製造は即ち発泡ウレタンの製造・加工になる。以下、製造方法の一例を示す。すなわちハードル1の製造は、好みの色彩が付与された発泡ウレタンを押出成形して長尺(たとえば、120cm)の断面L字状棒を製造する。押し出し成形以外の成形方法や複数部材を一体化させる方法を採用することもできるが、ハードル1の基本構造を1工程で製造するためには押出成形が便利である。
(Manufacturing method of hurdle)
Since the hurdle 1 of this embodiment is made of urethane foam, the manufacture of the hurdle 1 is the manufacture and processing of urethane foam. An example of the manufacturing method is shown below. Specifically, the hurdle 1 is manufactured by extruding urethane foam to which a desired color is applied to manufacture a long (for example, 120 cm) L-shaped bar in cross section. A molding method other than extrusion molding or a method of integrating a plurality of members can be employed, but extrusion molding is convenient for manufacturing the basic structure of the hurdle 1 in one process.

押出成形によりハードル1の最大幅Wの30cmの長さに成形することもできるが、上例のとおり120cmの長尺成形としたのは、これを長さ方向に4分割すれば1回の成形と3回の切断により4個のハードル1の基本構造を製造できて便利だからである。この製造方法によれば、ハードル1の少なくとも一方もしくは双方の端面が切断面となるが、これはハードル1の作用効果を何ら減ずるものではない。次に、必要に応じてハードル1の表面をコーティングすることも可能だが、発泡ウレタンを押出成形すると滑らかで光沢のある表面が形成されるので、本実施形態では押出成形したままにしている。 It is possible to form the hurdle 1 with a length of 30 cm, which is the maximum width W of the hurdle 1, by extrusion molding. It is convenient because the basic structure of four hurdles 1 can be manufactured by cutting three times. According to this manufacturing method, at least one or both of the end surfaces of the hurdle 1 are cut surfaces, but this does not reduce the effects of the hurdle 1 at all. The surface of the hurdle 1 can then be coated if desired, but is left extruded in this embodiment because extruding urethane foam produces a smooth, glossy surface.

次に、板状部材3と板状部材5の両方に、図示を省略する円形刃を用いた型抜きプレスによって通風孔3b,5bをそれぞれ7個ずつ形成する。型抜きされる発泡ウレタンは一度圧縮され、さらなる加圧によりせん断されるが、この圧縮直後に膨出するので、この膨出により環状膨出部3b,5bが形成される。以上により、ハードル1の製造が完了する。 Next, seven ventilation holes 3b and 5b are formed in each of the plate-like member 3 and the plate-like member 5 by a die-cutting press using a circular blade (not shown). The mold-cut urethane foam is once compressed and then sheared by further pressurization, but immediately after this compression, it swells, so that the swelled annular portions 3b and 5b are formed. Thus, the manufacture of the hurdle 1 is completed.

(ハードルの使用方法)
図10ないし16を参照する。図10に示すようにハードル1は、板状部材5を走行面Gの上に置く。このとき板状部材3は起立する。図10に示すハードル1は1個であるが、複数個のハードル1を所定間隔ごとに直線上に並べてもよい。競技者はこれらを跳び越えることで安全なトレーニングができる。板状部材5の向きは、競技者から見て板状部材3の手前でも後方でもよい。図10では、競技者(の靴)から見た板状部材5は板状部材3の後方(右側)に置かれている。これとは反対に競技者(の靴)から見た板状部材5は板状部材3が手前(左側)に置かれた状態が、図11に示す状態である。
(How to use hurdles)
See FIGS. 10-16. As shown in FIG. 10, the hurdle 1 has a plate member 5 placed on the running surface G. As shown in FIG. At this time, the plate member 3 stands up. Although one hurdle 1 is shown in FIG. 10, a plurality of hurdles 1 may be arranged in a straight line at predetermined intervals. Athletes can safely train by jumping over these. The direction of the plate-like member 5 may be in front of or behind the plate-like member 3 as viewed from the player. In FIG. 10 , the plate-like member 5 seen from (the shoes of) the player is placed behind (on the right side of) the plate-like member 3 . On the contrary, the state shown in FIG. 11 is that the plate-like member 5 is placed on the front (left side) of the plate-like member 5 as viewed from (the shoes of) the player.

一方で、図12に示すように、ハードル1を逆さV字に走行面に置いても、ハードルとして十分に活用可能である。このように置けば、水平方向や斜め方向からの風が板状部材3及び板状部材5は斜めに当たることになるので、正面から当たる場合に比べて安定性が向上する。通風孔3b,5bも風圧低減に貢献する。 On the other hand, as shown in FIG. 12, even if the hurdle 1 is placed on the running surface in an inverted V shape, it can be sufficiently utilized as a hurdle. When placed in this manner, the plate-like members 3 and 5 are obliquely hit by the wind from the horizontal direction or the oblique direction. The ventilation holes 3b and 5b also contribute to wind pressure reduction.

(ハードルの安全性・有用性)
ハードル1がクッション材、具体的には発泡ウレタンのみによって構成され、そのクッション性により変形性・衝撃吸収性に優れているという趣旨を繰り返して述べてきた。板状部材5を競技者(の靴)から見て板状部材の後方においた場合(図13)、同じく手前に置いた場合(図14)、何れにおいても競技者が跳び越えるのは起立した1枚板の板状部材3である(板状部材5を起立させる場合もある)。つまり、板状部材3の後方は変形による板状部材3の移動を許す空間になっているため、変形が容易である。図12に示す逆さV字状に置かれた場合のV字の下の三角空間が、板状部材3,5の移動空間となって変形を容易化する。
(Safety and usefulness of hurdles)
It has been repeatedly stated that the hurdle 1 is made of only a cushioning material, specifically urethane foam, and that the cushioning property of the hurdle 1 is excellent in deformability and impact absorption. When the plate-like member 5 is placed behind the plate-like member (Fig. 13) and in front of the player (Fig. 14), the player jumps up in both cases. The plate-like member 3 is a single plate (the plate-like member 5 may be erected in some cases). That is, since the rear part of the plate-like member 3 is a space that allows the movement of the plate-like member 3 due to deformation, the deformation is easy. The triangular space below the V when placed in the inverted V shape shown in FIG.

競技者(の靴)が躓いて板状部材3の上の部位に衝突した場合のハードル1は、その衝撃を変形で吸収しきれないときは、図15に示すように横転する。横転が終わったとき、たとえば、同図の右端に示すように逆さV字状態で落ち着いたとき、その上を競技者が踏みつけても、上述のように変形するから競技者が足を痛めたりする恐れはほぼ皆無である。以上のとおり、ハードル1は、非常に安全性の高いトレーニング用ハードルである。これに加えハードル1は、前述のとおり使用する際の設置方向を問わないし、通風孔3b,5bの働きにより風による横転が有効に抑制されるため有用性が極めて高い。 The hurdle 1 rolls over as shown in FIG. 15 when the player (the shoe) stumbles and collides with the upper part of the plate-like member 3 when the impact cannot be absorbed by deformation. When the rollover is over, for example, when it settles down in an inverted V shape as shown in the right end of the same figure, even if the player steps on it, it will deform as described above and the player's leg will hurt. Fear is almost non-existent. As described above, hurdle 1 is a very safe training hurdle. In addition to this, the hurdle 1 can be used in any installation direction as described above, and the function of the ventilation holes 3b and 5b effectively suppresses overturning due to the wind, so the hurdle 1 is extremely useful.

複数のハードル1は、これらを柔軟性あるロープRで所定間隔ごとに繋ぐことで、トレーニング用のラダー(梯子)を構成することができる。サッカー選手などがラダートレーニングするのに好都合である。並べる際に自動的に所定間隔を隔てることができるので、設置が楽である。一方、互いにつながっているため、ハードル1は横転しづらくなるが、クッション性が十分に衝撃を吸収してくれるので、安全性に支障はない。なお、ロープRと各ハードル1との連結も、柔軟性のあるゴムやロープによるリンク部材を使用すべきことは、安全性を担保するために当然である。 By connecting a plurality of hurdles 1 with flexible ropes R at predetermined intervals, a ladder for training can be constructed. It is convenient for soccer players and the like to do ladder training. It is easy to install because it can be automatically separated by a predetermined interval when arranging. On the other hand, since the hurdles 1 are connected to each other, it is difficult for the hurdles 1 to roll over, but the cushioning property sufficiently absorbs impacts, so there is no problem with safety. In order to secure safety, it is a matter of course that link members made of flexible rubber or rope should be used for the connection between the rope R and each hurdle 1 as well.

1,1A,1B トレーニング用ハードル(ハードル)
3 一方の板状部材
5 他方の板状部材
7 屈曲連結部
7a 角部
13,15,23,33 通風孔
13a 孔内壁
13b,23b,33b 環状膨出部
G 走行面
1, 1A, 1B training hurdles (hurdles)
3 One plate-shaped member 5 The other plate-shaped member 7 Bending connecting portion 7a Corners 13, 15, 23, 33 Ventilation holes 13a Hole inner walls 13b, 23b, 33b Annular bulging portion G Running surface

Claims (3)

全体がクッション材のみにより構成されたトレーニング用ハードルにおいて、
互いに同じの、最大高さH、最大幅W、最大厚さTの一方の板状部材および他方の板状部材と、当該一方の板状部材と当該他方の板状部材を連結する屈曲連結部と、を含み、最大幅Wを横切る断面が略L字状に構成され、
当該他方の板状部材を走行面上に置いたときに当該一方の板状部材が起立可能に全体構成され、
当該一方の板状部材の最大厚さT方向には、風荷重軽減のための通風孔が少なくとも1個貫通形成され、
当該少なくとも1個の通風孔は、孔内壁に囲まれており、
当該孔内壁の軸方向途中には、周方向全長から中心に向かって突出する環状膨出部が形成されている、
ことを特徴とするトレーニング用ハードル。
Training hurdles entirely made of cushion material,
One plate-shaped member and the other plate-shaped member having the same maximum height H, maximum width W, and maximum thickness T, and a bent connection portion that connects the one plate-shaped member and the other plate-shaped member and, the cross section across the maximum width W is configured in a substantially L shape,
The one plate-shaped member is configured as a whole so that it can stand up when the other plate-shaped member is placed on the running surface,
At least one ventilation hole for reducing the wind load is formed through the one plate member in the direction of the maximum thickness T,
the at least one vent is surrounded by an inner wall of the vent;
An annular bulging portion that protrudes toward the center from the entire circumferential length is formed in the middle of the inner wall of the hole in the axial direction.
A training hurdle characterized by:
前記一方の板状部材を走行面上に置いたときに前記他方の板状部材をも起立可能に全体構成され、
前記他方の板状部材の厚さT方向にも、風荷重軽減のための通風孔が少なくとも1個貫通形成されている、
ことを特徴とする請求項1記載のトレーニング用ハードル。
The overall configuration is such that when the one plate-like member is placed on the running surface, the other plate-like member can also stand up,
At least one ventilation hole for reducing wind load is also formed through the thickness T direction of the other plate member.
The training hurdle according to claim 1, characterized in that:
前記他方の板状部材に貫通形成されている少なくとも1個の通風孔は、孔内壁に囲まれており、
当該孔内壁の軸方向途中には、周方向全長から中心に向かって突出する環状膨出部が形成されている、
ことを特徴とする請求項2記載のトレーニング用ハードル。
at least one ventilation hole formed through the other plate member is surrounded by an inner wall of the hole,
An annular bulging portion that protrudes toward the center from the entire circumferential length is formed in the middle of the inner wall of the hole in the axial direction.
The training hurdle according to claim 2, characterized by:
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US20080085816A1 (en) 2006-10-10 2008-04-10 Bruno Pauletto Fitness training hurdle
JP3143748U (en) 2008-01-31 2008-08-07 貞弘 原島 Sports training equipment
CN201710982U (en) 2010-06-09 2011-01-19 上海市宝山区青少年科学技术指导站 Hurdle frame avoiding falling down
CN202761967U (en) 2012-06-27 2013-03-06 高永强 Quadruple-folded long cushion
CN203507556U (en) 2013-08-02 2014-04-02 河北沧狮文化体育产业有限公司 Folding type multipurpose hurdle frame
CN204307373U (en) 2014-12-02 2015-05-06 贾立辉 Softly to hurdle
US20180236370A1 (en) 2015-08-14 2018-08-23 Jacqueline C. Nadler Inflatable Obstacle Course Equipment
JP3218136U (en) 2018-03-06 2018-09-27 義宏 尾方 Safety-Mini Hurdles
CN210009630U (en) 2019-01-15 2020-02-04 山东柏年教育装备有限公司 Hurdle is striden in soft exercise

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Publication number Priority date Publication date Assignee Title
US3480273A (en) * 1967-05-24 1969-11-25 Stephen R Wise Hurdle and target
JPS59150500U (en) * 1983-03-03 1984-10-08 セノ−株式会社 safety hurdle
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080085816A1 (en) 2006-10-10 2008-04-10 Bruno Pauletto Fitness training hurdle
JP3143748U (en) 2008-01-31 2008-08-07 貞弘 原島 Sports training equipment
CN201710982U (en) 2010-06-09 2011-01-19 上海市宝山区青少年科学技术指导站 Hurdle frame avoiding falling down
CN202761967U (en) 2012-06-27 2013-03-06 高永强 Quadruple-folded long cushion
CN203507556U (en) 2013-08-02 2014-04-02 河北沧狮文化体育产业有限公司 Folding type multipurpose hurdle frame
CN204307373U (en) 2014-12-02 2015-05-06 贾立辉 Softly to hurdle
US20180236370A1 (en) 2015-08-14 2018-08-23 Jacqueline C. Nadler Inflatable Obstacle Course Equipment
JP3218136U (en) 2018-03-06 2018-09-27 義宏 尾方 Safety-Mini Hurdles
CN210009630U (en) 2019-01-15 2020-02-04 山东柏年教育装备有限公司 Hurdle is striden in soft exercise

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