JPH0257945B2 - - Google Patents
Info
- Publication number
- JPH0257945B2 JPH0257945B2 JP62185779A JP18577987A JPH0257945B2 JP H0257945 B2 JPH0257945 B2 JP H0257945B2 JP 62185779 A JP62185779 A JP 62185779A JP 18577987 A JP18577987 A JP 18577987A JP H0257945 B2 JPH0257945 B2 JP H0257945B2
- Authority
- JP
- Japan
- Prior art keywords
- frp
- bars
- parallel bars
- synthetic fiber
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 claims description 30
- 229920002994 synthetic fiber Polymers 0.000 claims description 20
- 239000012209 synthetic fiber Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 8
- 239000011162 core material Substances 0.000 claims description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 5
- 235000011613 Pinus brutia Nutrition 0.000 claims description 5
- 241000018646 Pinus brutia Species 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 5
- 239000012779 reinforcing material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 3
- 241001070947 Fagus Species 0.000 description 2
- 235000010099 Fagus sylvatica Nutrition 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、体操競技の種目になつている段違い
平行棒や平行棒に使用するFRP製バーの製造法
及びそのバーに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing an FRP bar used for uneven parallel bars and parallel bars, which are used in gymnastics events, and to the bar.
〔従来の技術及び発明が解決しようとする問題
点〕
従来のFRP製段違い平行棒用バーや平行棒用
バーは、ガラスクロス巻きした管状芯材に樹脂を
含浸せしめて硬化させることによりFRPパイプ
を形成し、このFRPパイプにブナなどの木材の
つき板を巻回貼着して製造している。[Prior art and problems to be solved by the invention] Conventional FRP bars for uneven parallel bars and bars for parallel bars are made by forming an FRP pipe by impregnating a tubular core material wrapped with glass cloth with resin and curing it. This FRP pipe is manufactured by winding and pasting boards made of wood such as beech.
このような従来法は量産性が不良な為、最近ガ
ラスマツトを管状芯材とし外層にガラスロービン
グを配した引抜成形法によりFRPパイプを量産
し、この引抜FRPパイプにブナなどの木材のつ
き板を巻回貼着する方法が提案されるに至つた。 Since such conventional methods are not suitable for mass production, recently FRP pipes have been mass-produced using a pultrusion method in which glass pine is used as a tubular core material and glass roving is arranged on the outer layer. A method of rolling and pasting was proposed.
しかし、該方法はガラスロービングが主体とな
り、しかもこのガラスロービングは一方向（軸方
向）に配される為、適正なたわみが得られない剛
性の高いFRPパイプとなり、これを段違い平行
棒や平行棒のバーに使用すると木製のバーに比し
たわみ性が劣る欠点がある。 However, this method mainly uses glass rovings, and since the glass rovings are arranged in one direction (axial direction), the result is a highly rigid FRP pipe that cannot be deflected appropriately. When used for this purpose, it has the disadvantage of being inferior in flexibility compared to wooden bars.
そこでダイナミツクな演技を安全且つスムーズ
に行い得るバーであり、且つ表面の木の性質につ
て持ちやすく、汗で滑ることが少なく、タンマ付
けを行う従来の習慣をそのままいかせる平行棒の
バーが要求されてきた。 Therefore, there is a need for a parallel bars bar that allows dynamic performances to be performed safely and smoothly, is easy to hold due to the wooden surface, is less prone to slipping due to sweat, and allows the traditional practice of applying tanmasu. Ta.
出願人は引抜成形法を採用して量産を可能にし
乍ら且つその引抜成形法によるFRPパイプに充
分なたわみを保有させる方法はないものかと研究
を開始し、本発明を完成した。 The applicant began researching whether there was a way to make mass production possible by employing the pultrusion method while also allowing the FRP pipe produced by the pultrusion method to retain sufficient flexibility, and completed the present invention.
添付図面を参照して本発明の要旨を説明する。 The gist of the present invention will be explained with reference to the accompanying drawings.
ガラスマツト芯材１３の外側に樹脂含浸したガ
ラスロービング１を配し、このガラスロービング
１の外側に樹脂含浸した合成繊維５を配して常法
の引抜成形によりFRPパイプを引抜成形し、こ
のFRPパイプの外側に木製のつき板３を巻回貼
着したことを特徴とする段違い平行棒や平行棒に
使用するFRP製バーの製造法に係るものである。 A resin-impregnated glass roving 1 is arranged on the outside of the glass pine core material 13, a resin-impregnated synthetic fiber 5 is arranged on the outside of the glass roving 1, and an FRP pipe is pultruded by a conventional pultrusion method. This relates to a method of manufacturing an FRP bar used for uneven parallel bars or parallel bars, which is characterized by having a wooden tie plate 3 wound and pasted on the outside of the bar.
また、断面が楕円形にして内側よりガラスロー
ビング１を主補強材とするFRP層ａと合成繊維
２を補強材とする繊維強化樹脂層ｂ（２′と同じ）
とつき板３巻回層ｃとを該順序により三重に配し
たことを特徴とする段違い平行棒用FRP製バー
及び平行棒用FRP製バーに係るものである。 In addition, the cross section is oval, and from the inside, the FRP layer a has glass roving 1 as the main reinforcing material, and the fiber reinforced resin layer b has synthetic fiber 2 as the reinforcing material (same as 2').
This invention relates to an FRP bar for uneven parallel bars and an FRP bar for parallel bars, which are characterized in that three layers of winding plates (c) are arranged in three layers in this order.
また、合成繊維２として不織布または織布を用
いた特許請求の範囲第１項記載の段違い平行棒や
平行棒に使用するFRP製バーの製造法に係るも
のである。 The present invention also relates to a method for manufacturing an FRP bar used for uneven parallel bars or parallel bars as set forth in claim 1, in which a nonwoven fabric or a woven fabric is used as the synthetic fiber 2.
また、合成繊維２として不織布または織布を用
いた特許請求の範囲第２項記載の段違い平行棒用
FRP製バー及び平行棒用FRP製バーに係るもの
である。 Further, for uneven parallel bars according to claim 2, in which a nonwoven fabric or a woven fabric is used as the synthetic fiber 2.
This relates to FRP bars and FRP bars for parallel bars.
常法の引抜成形を行うと、ガラスマツト芯材１
３の外側にガラスロービング層１を設け、更にガ
ラスロービング１の外側に樹脂硬化により一体化
された合成繊維層２′が形成されたFRPパイプが
成型される。
When pultrusion is performed in a conventional manner, glass pine core material 1
An FRP pipe is molded, in which a glass roving layer 1 is provided on the outside of the glass roving 3, and a synthetic fiber layer 2' is further formed on the outside of the glass roving 1, which is integrated by resin curing.
この縦横に合成繊維２が配された合成繊維層
２′が、ガラスロービング１の軸方向特性（ガラ
スロービング１が軸方向のみに配される為適正な
たわみが得られないという特性）を打ち消し、適
正なたわみを有するFRPパイプを提供すること
になる。 This synthetic fiber layer 2' in which synthetic fibers 2 are arranged vertically and horizontally cancels out the axial characteristics of the glass roving 1 (the characteristic that proper deflection cannot be obtained because the glass roving 1 is arranged only in the axial direction), This will provide FRP pipes with appropriate deflection.
このパイプの外側に木製のつき板３を巻回貼着
すると外観が従来通りであつて、たわみ性の秀れ
た本発明品が得られる。 By winding and pasting a wooden tie plate 3 on the outside of this pipe, a product of the present invention having a conventional appearance and excellent flexibility can be obtained.
本発明品の断面を楕円形状にした点について第
２図を参照にして説明する。 The point that the cross section of the product of the present invention is elliptical will be explained with reference to FIG.
a1＝k1a2、b1＝k2b2と仮定すると k1＝a1／a2、k2＝b1／b2 ここで慣性モーメントＩは次式より表せる。Assuming a 1 = k 1 a 2 , b 1 = k 2 b 2 , k 1 = a 1 /a 2 , k 2 = b 1 /b 2 where the moment of inertia I can be expressed by the following equation.
慣性モーメントＩ＝π／４（a2 3b2−a1 3b1）
＝π／４（１−k1 3k2）a2 3b2
この式から楕円パイプの肉厚が薄くなると
（k1，k2の値を1.0に近づけると）、Ｉの値が急激
に変化する事が解る。 Moment of inertia I = π/4 (a 2 3 b 2 − a 1 3 b 1 ) = π/4 (1 − k 1 3 k 2 ) a 2 3 b 2From this equation, when the wall thickness of the elliptical pipe becomes thinner, ( It can be seen that when the values of k 1 and k 2 approach 1.0, the value of I changes rapidly.
一方たわみδは次式で表せる。 On the other hand, the deflection δ can be expressed by the following formula.
δ∝ｆ（ｐ・ｌ）／EI（δ：たわみ Ｐ：荷重
ｌ：スパン Ｅ：弾性）
この式より、たわみδはEIに反比例すること
になる。 δ∝f(p・l)/EI (δ: deflection P: load l: span E: elasticity) From this formula, the deflection δ is inversely proportional to EI.
従つて、荷重・スパン間隔・たわみが設定され
るとＥとＩの値は自動的に決定される。 Therefore, once the load, span interval, and deflection are set, the values of E and I are automatically determined.
また、たわみδとEIとは反比例の関係にあり、
Ｅ→小のとき、Ｉ→大となる。 Also, the deflection δ and EI are inversely proportional,
When E→small, I→large.
楕円の場合Ｉ＝π／４（a2 3b2−a1 3b1）であり、
同一肉厚で比較すると外層部ほどＩ値は大とな
る。 In the case of an ellipse, I=π/4 (a 2 3 b 2 −a 1 3 b 1 ), and when comparing the same wall thickness, the I value becomes larger in the outer layer.
従つて外層部にＥ値の小さな材料を配置する
と、全体のEI値を調整する効果が大きく、きめ
細かなたわみ量の設定が可能となる。 Therefore, when a material with a small E value is placed in the outer layer, the effect of adjusting the overall EI value is large, and the amount of deflection can be set in a fine manner.
第１図は本発明の実施の一例を示す説明図で、
図中符号４はマンドレル、５はポリエステル不織
布、６はフオーミングガイド、７はダイス、８は
引抜機、９はカツトソー、１０は樹脂含浸部、１
１はブツシング、１２はロービングガイド、１３
はガラスマツト、１４は樹脂含浸槽である。
FIG. 1 is an explanatory diagram showing an example of implementation of the present invention,
In the figure, numeral 4 is a mandrel, 5 is a polyester nonwoven fabric, 6 is a forming guide, 7 is a die, 8 is a drawing machine, 9 is a cut saw, 10 is a resin impregnated part, 1
1 is bushing, 12 is roving guide, 13
1 is a glass mat, and 14 is a resin impregnation tank.
ガラスマツト１３により補強し、樹脂含浸槽１
４において樹脂含浸されたガラスロービング１の
外側に繊維強化樹脂層ｂを形成するポリエステル
不織布５を配し、不飽和ポリエステル樹脂、ビニ
ルエステル樹脂、エポキシ樹脂等の合成樹脂を樹
脂含浸部１０においてだぶ漬け、吹き付け等の手
段により含浸せしめ、ダイス７を硬化温度130℃
程度で通過させることによりFRPパイプを成形
する。 Reinforced with glass mat 13, resin impregnation tank 1
A polyester nonwoven fabric 5 forming a fiber-reinforced resin layer b is placed on the outside of the resin-impregnated glass roving 1 in step 4, and a synthetic resin such as unsaturated polyester resin, vinyl ester resin, or epoxy resin is soaked in the resin-impregnated portion 10. , impregnated by means such as spraying, and hardened the die 7 at a curing temperature of 130°C.
Form the FRP pipe by passing it through.
図示した実施例は、最も望ましい合成繊維２と
してポリエステル繊維を用いた場合であるが、ナ
イロン繊維、ビニロン繊維等でも良い。 In the illustrated embodiment, polyester fiber is used as the most desirable synthetic fiber 2, but nylon fiber, vinylon fiber, etc. may also be used.
また、合成繊維２は、織布、不織布のいずれの
形態で用いても良いが、ガラスロービング層１′
面との接着、耐疲労性、層間接着等を考慮すれば
不織布の方が良いことが確認されている。 Furthermore, the synthetic fiber 2 may be used in the form of either a woven fabric or a non-woven fabric, but the glass roving layer 1'
It has been confirmed that nonwoven fabrics are better in terms of adhesion to surfaces, fatigue resistance, interlayer adhesion, etc.
このようにして形成されたFRPパイプの外周
にブナのつき板を巻回貼着して本発明品を製作す
る。 The product of the present invention is manufactured by winding and pasting a beech board around the outer periphery of the FRP pipe thus formed.
このようにして製作された本発明品は従来のガ
ラスクロス巻きFRPパイプ（規格品）と同様に
荷重300Kgでたわみ220mmを呈することが確認され
た。 It was confirmed that the product of the present invention manufactured in this manner exhibits a deflection of 220 mm under a load of 300 kg, similar to the conventional glass cloth-wrapped FRP pipe (standard product).
このたわみ量が得られるのは、合成繊維２に吸
湿性がなく、軟化点も高く、引抜成形を行う際、
水分による膨れの発生、層間剥離、樹脂の硬化阻
害等がなく、また軟化点が高いことによりダイス
内で加熱硬化する際に極端な延びやちぎれが生じ
ないことによる。 This amount of deflection is obtained because the synthetic fiber 2 has no hygroscopicity and has a high softening point, and when pultrusion is performed,
This is because there is no blistering caused by moisture, interlayer peeling, or inhibition of resin hardening, and the high softening point prevents extreme elongation or tearing during heating and hardening in a die.
従つて、合成繊維層２′は、ガラスロービング
１の一方向のたわみを打ち消す効果の他に、本発
明に従来品と同様なたわみ量を付与する効果をも
有するものである。 Therefore, the synthetic fiber layer 2' not only has the effect of canceling out the deflection of the glass roving 1 in one direction, but also has the effect of imparting the same amount of deflection as the conventional product to the present invention.
また、本発明は、合成繊維層２′の厚さを調整
することにより任意のたわみ特性を得ることも可
能となるものである。 Furthermore, the present invention makes it possible to obtain arbitrary deflection characteristics by adjusting the thickness of the synthetic fiber layer 2'.
本発明は、引抜成形法により段違い平行棒用
FRP製バーや平行棒用FRP製バーを成形するこ
とにしたから、クロス巻による従来法に比し、バ
ーの量産が可能となる。
The present invention utilizes a pultrusion method to produce uneven parallel bars.
Since we decided to mold FRP bars and FRP bars for parallel bars, mass production of bars becomes possible compared to the conventional method of cross winding.
更に、ガラスロービングを主補強材としたパイ
プの外側に樹脂硬化により一体化される合成繊維
層を形成したから、ガラスロービングの軸方向性
の剛性特性が打ち消され、量産可能な引抜成形で
あるにもかかわらず従来のガラスクロス巻き
FRP製パイプのたわみ特性を充分発揮し得るバ
ーを提供し得ることになる。 Furthermore, since a synthetic fiber layer is formed on the outside of the pipe that uses glass roving as the main reinforcement material, which is integrated by resin curing, the axial stiffness characteristics of glass roving are canceled out, making it possible to mass-produce pultrusion molding. Despite traditional glass cloth wrapping
This makes it possible to provide a bar that can fully exhibit the bending characteristics of FRP pipes.
更に、断面を楕円形状にした場合、しめ細やか
なたわみ量の設定が可能となる等秀れた効果を有
する段違い平行棒や平行棒に使用するFRP製バ
ーの製造法及びそのバーとなる。 Furthermore, when the cross section is made into an elliptical shape, the present invention provides a method for manufacturing an FRP bar used for uneven parallel bars and parallel bars, which has excellent effects such as being able to set the amount of deflection finely.
第１図は引抜成形ラインの説明図、第２図は断
面説明図、第３図は製品断面図である。
ａ……FRP層、ｂ……繊維強化樹脂層、ｃ…
…巻回層、１……ガラスロービング、２……合成
繊維、２′……合成繊維層、３……つき板、５…
…合成繊維、１３……ガラスマツト芯材。
FIG. 1 is an explanatory diagram of a pultrusion molding line, FIG. 2 is an explanatory cross-sectional diagram, and FIG. 3 is a cross-sectional diagram of the product. a... FRP layer, b... fiber reinforced resin layer, c...
...Wound layer, 1...Glass roving, 2...Synthetic fiber, 2'...Synthetic fiber layer, 3...Plate, 5...
...Synthetic fiber, 13...Glass pine core material.
Claims (1)
スロービングを配し、このガラスロービングの外
側に樹脂含浸した合成繊維を配して常法の引抜成
形によりFRPパイプを引抜成形し、このFRPパ
イプの外側に木製のつき板を巻回貼着したことを
特徴とする段違い平行棒や平行棒に使用する
FRP製バーの製造法。 ２ 断面が楕円形にして内側よりガラスロービン
グを主補強材とするFRP層と合成繊維を補強材
とする繊維強化樹脂層とつき板巻回層とを該順序
により三重に配したことを特徴とする段違い平行
棒用FRP製バー及び平行棒用FRP製バー。 ３ 合成繊維として不織布または織布を用いた特
許請求の範囲第１項記載の段違い平行棒や平行棒
に使用するFRP製バーの製造法。 ４ 合成繊維として不織布または織布を用いた特
許請求の範囲第２項記載の段違い平行棒用FRP
製バー及び平行棒用FRP製バー。[Scope of Claims] 1 A resin-impregnated glass roving is arranged on the outside of a glass pine core material, a resin-impregnated synthetic fiber is arranged on the outside of this glass roving, and an FRP pipe is pultruded by a conventional pultrusion method, Used for uneven parallel bars and parallel bars, which are characterized by a wooden plate wrapped and pasted on the outside of this FRP pipe.
Manufacturing method for FRP bars. 2. It is characterized by having an elliptical cross-section and having an FRP layer with glass roving as the main reinforcing material, a fiber-reinforced resin layer with synthetic fiber as the reinforcing material, and a plate-wound layer arranged in triple layers in this order from the inside. FRP bars for uneven parallel bars and FRP bars for parallel bars. 3. A method for manufacturing an FRP bar used for uneven parallel bars or parallel bars according to claim 1, using a nonwoven fabric or a woven fabric as the synthetic fiber. 4 FRP for uneven parallel bars according to claim 2 using nonwoven fabric or woven fabric as synthetic fiber
FRP bars for steel bars and parallel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62185779A JPS6429276A (en) | 1987-07-24 | 1987-07-24 | Production of frp bar used in ueven bars or parallel bars and said bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62185779A JPS6429276A (en) | 1987-07-24 | 1987-07-24 | Production of frp bar used in ueven bars or parallel bars and said bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6429276A JPS6429276A (en) | 1989-01-31 |
| JPH0257945B2 true JPH0257945B2 (en) | 1990-12-06 |
Family
ID=16176747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62185779A Granted JPS6429276A (en) | 1987-07-24 | 1987-07-24 | Production of frp bar used in ueven bars or parallel bars and said bar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6429276A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1002356C2 (en) * | 1996-02-15 | 1997-08-18 | Janssen & Fritsen Beheer B V | Gymnastic equipment and horizontal bar suitable for such a gymnastic equipment. |
| FR3036039B1 (en) * | 2015-05-13 | 2017-06-09 | Gymnova | ELEMENT FOR GRIPPING A SPORTS EQUIPMENT |
| CN115246253B (en) * | 2021-12-24 | 2024-03-26 | 山东泰山体育器材有限公司 | Gymnastics apparatus load-bearing frame body and fiber structure body |
-
1987
- 1987-07-24 JP JP62185779A patent/JPS6429276A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6429276A (en) | 1989-01-31 |
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