JP2729631B2 - Fiber reinforced thermosetting resin pipe for bicycle frame - Google Patents
Fiber reinforced thermosetting resin pipe for bicycle frameInfo
- Publication number
- JP2729631B2 JP2729631B2 JP63119676A JP11967688A JP2729631B2 JP 2729631 B2 JP2729631 B2 JP 2729631B2 JP 63119676 A JP63119676 A JP 63119676A JP 11967688 A JP11967688 A JP 11967688A JP 2729631 B2 JP2729631 B2 JP 2729631B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- thermosetting resin
- pipe
- layer
- bicycle frame
- 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 - Fee Related
Links
- 229920005989 resin Polymers 0.000 title claims description 48
- 239000011347 resin Substances 0.000 title claims description 48
- 229920001187 thermosetting polymer Polymers 0.000 title claims description 44
- 239000000835 fiber Substances 0.000 title claims description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 8
- 239000012783 reinforcing fiber Substances 0.000 claims description 7
- 229920005992 thermoplastic resin Polymers 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 4
- 210000004177 elastic tissue Anatomy 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229930182556 Polyacetal Natural products 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004760 aramid Substances 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 239000009719 polyimide resin Substances 0.000 claims description 2
- 229920006324 polyoxymethylene Polymers 0.000 claims description 2
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 2
- 229920001567 vinyl ester resin Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- 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、軽量で高強度の自転車フレーム用繊維強化
熱硬化性樹脂パイプに関するものである。この樹脂パイ
プは、その端部に金属エンド部材を圧入して使用され、
使用時に、金属エンドにより集中する局部負荷を軽減す
ることができる。The present invention relates to a lightweight and high-strength fiber-reinforced thermosetting resin pipe for a bicycle frame. This resin pipe is used by pressing a metal end member into its end,
In use, local loads concentrated on the metal end can be reduced.
従来、自転車フレーム用繊維強化熱硬化性樹脂パイプ
に金属エンド部材を取り付ける場合、接着剤により固定
する方法や、冷しばめにより固定する方法が採られてい
る。Conventionally, when attaching a metal end member to a fiber reinforced thermosetting resin pipe for a bicycle frame, a method of fixing with an adhesive or a method of fixing with a cold fit has been adopted.
このような方法で取り付けた場合、繊維強化熱硬化性
樹脂パイプは、金属エンド固定部に比較して弾性率が低
いために、金属エンドより伝わる荷重がパイプ端部への
局所荷重となり、パイプ内径を押し拡げ破壊することが
ある。また、冷しばめによる固定方法を採った場合、固
定後の金属エンドの膨脹により繊維強化熱硬化性樹脂パ
イプに内圧がかかり、パイプ端部が破損することがあ
る。When attached by such a method, the fiber reinforced thermosetting resin pipe has a lower elastic modulus than the metal end fixing portion, so the load transmitted from the metal end becomes a local load to the pipe end, and the pipe inner diameter is May be spread and destroyed. Further, when the fixing method by cold fitting is adopted, internal pressure is applied to the fiber-reinforced thermosetting resin pipe due to expansion of the metal end after fixing, and the pipe end may be damaged.
このようなパイプ端部の破損を防止するために、パイ
プ端部を補強することが行われている。In order to prevent such breakage of the pipe end, the pipe end is reinforced.
例えば強化材繊維を±80〜90度に配向した層をパイ
プの最内層全面に設ける（第１図）、パイプの端部に
肉厚の補強層を設ける（第２図）等の方法により、繊維
強化熱硬化性樹脂パイプの端部強度を向上させる。For example, a layer in which the reinforcing fiber is oriented at ± 80 to 90 degrees is provided on the entire innermost layer of the pipe (FIG. 1), and a thick reinforcing layer is provided at the end of the pipe (FIG. 2). The strength of the end of the fiber reinforced thermosetting resin pipe is improved.
上記の方法強化材繊維を±80〜90度に配向した層に
より、パイプ端部内径の押し拡げを防止し、強度の向上
の効果は得られるが、パイプ中央部の±80〜90度層は端
部強度向上には不要であり、余分の層の付加により軽量
化効果が損われる。The above-mentioned method The layer in which the reinforcing fiber is oriented at ± 80 to 90 degrees prevents the expansion of the inner diameter of the pipe end, and the effect of improving the strength is obtained, but the layer of ± 80 to 90 degrees at the center of the pipe is It is not necessary to improve the edge strength, and the addition of an extra layer impairs the weight saving effect.
上記の方法は、パイプ端部が肉厚となるため、外径
が変り補強部において段差が生じるという問題があり、
さらに段差部においてパイプの破壊が生じやすいという
問題がある。The above method has a problem that since the pipe end becomes thick, the outer diameter changes and a step occurs in the reinforcing portion,
Further, there is a problem that the pipe is easily broken at the step portion.
本発明は、従来技術における前記問題点を克服した自
転車フレーム用熱硬化性樹脂パイプを提供しようとする
ものである。An object of the present invention is to provide a thermosetting resin pipe for a bicycle frame that overcomes the above-mentioned problems in the prior art.
本発明は下記のとおりである。 The present invention is as described below.
（１）パイプ端部に金属エンド部材を圧入して使用され
る肉厚の均一な自転車フレーム用繊維強化熱硬化性樹脂
パイプにおいて、本体層の内側の該端部に厚さ0.05〜0.
3mmの熱可塑性樹脂の補強第１層と、２％以上の伸度を
有する繊維で強化された厚さ0.5〜1.5mmの補強第２層
と、高弾性繊維で強化された厚さ0.3〜0.8mmの補強第３
層とを有し、補強第２層と補強第３層とは共に熱硬化性
樹脂をマトリックスとしたパイプ軸に対し±80〜90度配
向の繊維補強層であり、かつ各層の深さはエンド部材の
圧入深さより浅い位置で配置されていることを特徴とす
る自転車フレーム用繊維強化熱硬化性樹脂パイプ。(1) In a fiber-reinforced thermosetting resin pipe for a bicycle frame having a uniform thickness used by press-fitting a metal end member into an end of the pipe, a thickness of 0.05 to 0.1 mm is applied to the end inside the main body layer.
A first layer of 3 mm of thermoplastic resin, a second layer of 0.5 to 1.5 mm reinforced with fibers having an elongation of 2% or more, and a 0.3 to 0.8 layer of high elastic fibers mm reinforcement 3
The reinforcing second layer and the reinforcing third layer are both fiber reinforcing layers oriented at ± 80 to 90 degrees with respect to the pipe axis using a thermosetting resin as a matrix, and the depth of each layer is an end. A fiber-reinforced thermosetting resin pipe for a bicycle frame, which is arranged at a position shallower than a press-fitting depth of a member.
（２）自転車フレーム用繊維強化熱硬化性樹脂パイプの
強化材繊維が炭素繊維である請求項（１）記載の自転車
フレーム用繊維強化熱硬化性樹脂パイプ。(2) The fiber reinforced thermosetting resin pipe for a bicycle frame according to (1), wherein the reinforcing fibers of the fiber reinforced thermosetting resin pipe for a bicycle frame are carbon fibers.
（３）熱硬化性樹脂がエポキシ樹脂、不飽和ポリエステ
ル樹脂、ビニルエステル樹脂、フェノール樹脂又は／及
びポリイミド樹脂である請求項（１）記載の自転車フレ
ーム用繊維強化熱硬化性樹脂パイプ。(3) The fiber reinforced thermosetting resin pipe for a bicycle frame according to (1), wherein the thermosetting resin is an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, a phenol resin or / and a polyimide resin.
（４）補強第１層の熱可塑性樹脂が、ポリイミド、ポリ
プロピレン、ポリエチレン、ポリスチレン、ポリ塩化ビ
ニル、ポリカーボネイト、ポリアセタール、ABS、ポリ
エチレンテレフタレート、ポリブチレンテレフタレート
又は／及びポリフェニレンオキサイドである請求項
（１）記載の自転車フレーム用繊維強化熱硬化性樹脂パ
イプ。(4) The thermoplastic resin of the first reinforcing layer is polyimide, polypropylene, polyethylene, polystyrene, polyvinyl chloride, polycarbonate, polyacetal, ABS, polyethylene terephthalate, polybutylene terephthalate or / and polyphenylene oxide. Fiber reinforced thermosetting resin pipe for bicycle frames.
（５）補強第２層の伸度２％以上の強化材繊維が、高伸
度低弾性の炭素繊維、ガラス繊維又は／及びアラミド繊
維である請求項（１）記載の自転車フレーム用繊維強化
熱硬化性樹脂パイプ。(5) The fiber reinforced heat for a bicycle frame according to (1), wherein the reinforcing fiber of the second reinforcing layer having an elongation of 2% or more is a carbon fiber, glass fiber and / or aramid fiber having high elongation and low elasticity. Curable resin pipe.
（６）補強第３層の高弾性繊維が、低伸度高弾性の炭素
繊維、ボロン繊維又は／及びアルミナ繊維である請求項
（１）記載の自転車フレーム用繊維強化熱硬化性樹脂パ
イプ。(6) The fiber reinforced thermosetting resin pipe for a bicycle frame according to (1), wherein the high elasticity fiber of the third reinforcing layer is a carbon fiber, boron fiber and / or alumina fiber having low elongation and high elasticity.
本発明における自転車フレーム用繊維強化熱硬化性樹
脂パイプは軽量であって、パイプと金属エンドとの接合
部における強度が高く、補強部において外径に段差がな
い。The fiber reinforced thermosetting resin pipe for a bicycle frame in the present invention is lightweight, has high strength at the joint between the pipe and the metal end, and has no step in the outer diameter at the reinforcing part.
本発明を図面によって説明する。 The present invention will be described with reference to the drawings.
第３図は、本発明自転車フレーム用繊維強化熱硬化性
樹脂パイプの軸方向断面図を示したものである。FIG. 3 is an axial sectional view of a fiber-reinforced thermosetting resin pipe for a bicycle frame according to the present invention.
第４図は、本発明自転車フレーム用繊維強化熱硬化性
樹脂パイプに金属エンド部材２を圧入した状態の端部軸
方向断面図を示したものである。FIG. 4 is a sectional view in the axial direction of the end portion of the state in which the metal end member 2 is pressed into the fiber-reinforced thermosetting resin pipe for a bicycle frame of the present invention.
第３図及び第４図において、１は自転車フレーム用繊
維強化熱硬化性樹脂パイプ本体層、３は補強第１層で熱
可塑性樹脂層、４は補強第２層で伸度２％以上の強化材
繊維をパイプ軸に対し±80〜90度で配向した繊維強化熱
硬化性樹脂層、５は補強第３層で高弾性の強化材繊維を
パイプ軸に対し±80〜90度で配向した繊維強化熱硬化性
樹脂層を示したものである。3 and 4, reference numeral 1 denotes a fiber reinforced thermosetting resin pipe main body layer for a bicycle frame, 3 denotes a first reinforcing layer of a thermoplastic resin layer, and 4 denotes a second reinforcing layer of 2% or more elongation. Fiber reinforced thermosetting resin layer in which material fibers are oriented at ± 80 to 90 degrees to the pipe axis, 5 is the third reinforcing layer, fibers in which highly elastic reinforcing fibers are oriented at ± 80 to 90 degrees to the pipe axis. 3 shows a reinforced thermosetting resin layer.
自転車フレーム用パイプ本体層１は、炭素繊維、硝子
繊維、芳香族ポリアミド繊維のような高弾性繊維を強化
材とした繊維強化熱硬化性樹脂であり、特に炭素繊維を
強化材としたものは、軽量化、高弾性の点で優れてい
る。The bicycle frame pipe main body layer 1 is a fiber reinforced thermosetting resin using a high elastic fiber such as carbon fiber, glass fiber, or aromatic polyamide fiber as a reinforcing material. Excellent in weight reduction and high elasticity.
この繊維強化熱硬化性樹脂パイプは、直管、曲管、テ
ーパー管のいずれでもよく、用途に応じ曲げ剛性、曲げ
強度、ねじり剛性、ねじり強度等を満足するよう設計さ
れる。The fiber-reinforced thermosetting resin pipe may be any of a straight pipe, a curved pipe, and a tapered pipe, and is designed to satisfy bending rigidity, bending strength, torsional rigidity, torsional strength, and the like according to the application.
補強第１層３の熱可塑性樹脂層は、パイプ内径に対し
て大きな外径をもつ金属エンドを圧入する時にパイプ内
側にかかる内圧を吸収し、パイプの破損を防ぎ、かつ金
属エンドとパイプの軸合せを容易にする効果がある。The thermoplastic resin layer of the first reinforcing layer 3 absorbs an internal pressure applied to the inside of the pipe when a metal end having a large outside diameter with respect to the inside diameter of the pipe is pressed, prevents breakage of the pipe, and prevents the metal end and the shaft of the pipe. This has the effect of facilitating alignment.
補強第２層４の繊維強化熱硬化性樹脂層は、自転車使
用時の振動及び衝撃から生じるパイプと金属エンドの接
合部分にかかる局所荷重を吸収し、接合部分の破壊を防
ぐ効果がある。The fiber-reinforced thermosetting resin layer of the second reinforcing layer 4 has an effect of absorbing a local load applied to the joint between the pipe and the metal end generated by vibration and impact during use of the bicycle and preventing the joint from being broken.
以上補強部第１層と第２層は変位することにより応力
集中を防止するのに対し、補強第３層５は、高弾性繊維
を±80〜90度に配向したことにより、内圧によるパイプ
の押し拡げを防ぎ、強度を向上させることと、パイプ外
径寸法を保持する効果がある。As described above, the first layer and the second layer of the reinforcing portion are displaced to prevent stress concentration. On the other hand, the third layer 5 of the reinforcing member has a high elasticity fiber oriented at ± 80 to 90 degrees, so that the internal pressure of the pipe is reduced. It has the effect of preventing the pushing and expanding, improving the strength, and maintaining the outer diameter of the pipe.
この高弾性繊維は、引張弾性率が40,000kgf/mm2以上
のものが好ましい。The high elasticity fiber preferably has a tensile modulus of 40,000 kgf / mm 2 or more.
これら補強部３〜５は、金属エンド圧入深さより浅い
位置にパイプ端より配されており、かつ外径に段差を生
じないよう調整しているため、パイプ軸方向の機械的特
性を損なうことがない。Since these reinforcing portions 3 to 5 are arranged at a position shallower than the metal end press-fitting depth from the pipe end and are adjusted so as not to cause a step in the outer diameter, mechanical characteristics in the pipe axial direction may be impaired. Absent.
本発明の自転車フレーム用繊維強化熱硬化性樹脂パイ
プは、軽量であると共に、端部補強部の接合部分の強度
が高い。しかも、端部補強層によって外径に段差を生じ
させず、金属エンド部材の圧入深さより浅い位置を補強
しており接合部分に応力集中がなく高い破壊強度を有す
る。The fiber reinforced thermosetting resin pipe for a bicycle frame of the present invention is light in weight and has high strength at the joint portion of the end reinforcing portion. In addition, no step is formed in the outer diameter by the end reinforcing layer, and a position shallower than the press-fitting depth of the metal end member is reinforced.
実施例１ 高強度タイプ炭素繊維〔東邦レーヨン（株）製ベスフ
ァイト 〕を一方向に引き揃えたフェノールノボラック
タイプエポキシ樹脂プリプレグ（硬化温度130℃）を外
径20mmの鉄製マンドレルに軸方向に対し内層を±45度、
外層を０゜の繊維角度で配向し、パイプの曲げ弾性率が
9,000kg/mm2の直管となるよう積層し、両端部は補強繊
維層が配される部分の積層数を少なくした。 Example 1 High-strength type carbon fiber [Vesuf manufactured by Toho Rayon Co., Ltd.
Ait ] In one direction
Remove type epoxy resin prepreg (curing temperature 130 ° C)
The inner layer is ± 45 degrees in the axial direction on an iron mandrel with a diameter of 20 mm,
The outer layer is oriented at a fiber angle of 0 °, and the bending elastic modulus of the pipe is
9,000kg / mmTwoLaminated to form a straight pipe with both ends
The number of layers in the portion where the fiber layer is arranged was reduced.
両端部は、最内層にポリアミド樹脂製の熱可塑性樹脂
フィルムを厚さ0.2mmとなるようにパイプ端部より30mm
の間に積層し、その上層に伸度5.4％のガラス繊維を一
方向に引き揃えた前記と同様のエポキシ樹脂プリプレグ
を軸方向に対し90度に厚さ1.2mmとなるようにパイプ端
より30mmの間に積層し、さらに引張弾性率40,000kg/mm2
の炭素繊維を一方向に引揃えた前記と同様のエポキシ樹
脂プリプレグを軸に対し90度の繊維方向に厚さ0.5mmと
なるようにパイプ端より10mmの間に積層した。Both ends are 30 mm from the end of the pipe so that the innermost layer is made of a thermoplastic resin film made of polyamide resin and has a thickness of 0.2 mm.
An epoxy resin prepreg similar to the above, in which glass fibers having an elongation of 5.4% are aligned in one direction, is 30 mm from the pipe end so as to have a thickness of 1.2 mm at 90 degrees to the axial direction. Between 40,000 kg / mm 2
An epoxy resin prepreg similar to the above prepared in which the carbon fibers were aligned in one direction was laminated between the pipe ends so as to have a thickness of 0.5 mm in the fiber direction at 90 degrees to the axis.
各層の厚さは成形後のものであり、パイプの肉厚は成
形後に全体が均一となるように調整した。The thickness of each layer was that after molding, and the thickness of the pipe was adjusted so that the whole after molding was uniform.
このプリフォームを硬化炉にて130℃、120分間熱処理
し、冷却後マンドレルを引き抜いて、炭素繊維強化熱硬
化製樹脂パイプを得た。This preform was heat-treated at 130 ° C. for 120 minutes in a curing furnace, and after cooling, the mandrel was pulled out to obtain a carbon fiber reinforced thermosetting resin pipe.
下記のとおり、得られたパイプについて効果確認試験
を行った。As described below, an effect confirmation test was performed on the obtained pipe.
（イ）補強部が金属エンドの圧入深さよりも浅い位置に
配されていることの効果を確認するため、実施例１と同
じ内径と機構的特性をもつパイプで、端部補強をガラス
繊維強化熱硬化性樹脂だけで行ったパイプを３タイプ成
形し、S45C製金属エンドを圧入して物性測定と曲げ破壊
テストを行った。(A) In order to confirm the effect that the reinforcing portion is arranged at a position shallower than the press-fitting depth of the metal end, the end portion is reinforced with glass fiber using a pipe having the same inner diameter and mechanical characteristics as in Example 1. Three types of pipes made only of the thermosetting resin were molded, a metal end made of S45C was press-fitted, and physical properties were measured and a bending fracture test was performed.
それぞれのタイプは、本発明と同様に、端部補強層を
金属エンド圧入深さより浅く配したもの（比較例１、第
６図断面図）、金属エンド圧入深さと同じ深さに配した
もの（比較例２、第７図断面図）、内層全面に補強層を
配したもの、（比較例３、第１図断面図）である。この
結果は、第１表に示すとおりである。これによれば、金
属エンドの圧入深さより浅く補強部を配した本発明パイ
プは、破壊モーメントが大きく、軽量効果も大きいこと
がわかる。In each type, as in the present invention, the end reinforcing layer is arranged shallower than the metal end press-in depth (Comparative Example 1, sectional view in FIG. 6), and the end reinforcement layer is arranged at the same depth as the metal end press-in depth ( (Comparative Example 2, cross-sectional view in FIG. 7), and those in which a reinforcing layer is provided on the entire inner layer (Comparative Example 3, cross-sectional view in FIG. 1). The results are as shown in Table 1. According to this, it is understood that the pipe of the present invention in which the reinforcing portion is arranged shallower than the press-fit depth of the metal end has a large breaking moment and a large lightening effect.
（ロ）本発明において、補強部が３層からなることの効
果を確認するため、実施例１と同じ寸法と機械的特性を
もつパイプで端部補強を補強第２層と第３層だけで行っ
たもの（比較例４、第８図断面図）と、補強第１層と第
２層だけで行ったもの（比較例５、第９図断面図）とを
成形し、実施例１と共に実際に自転車として使用した。 (B) In the present invention, in order to confirm the effect of the reinforcing portion having three layers, the end portion is reinforced with a pipe having the same dimensions and mechanical characteristics as in Example 1 by only the second and third layers. What was performed (Comparative Example 4, cross-sectional view in FIG. 8) and what was performed only with the first and second reinforcing layers (Comparative Example 5, cross-sectional view in FIG. 9) were formed and actually formed together with Example 1. Used as a bicycle.
その結果、比較例４は金属エンドとパイプの接着面で
剥離が起り、比較例５は、パイプ内側からかかる内圧に
より押し拡げ破壊が起った。As a result, in Comparative Example 4, peeling occurred at the bonding surface between the metal end and the pipe, and in Comparative Example 5, the internal pressure applied from the inside of the pipe caused the sheet to expand and break.
第１図及び第２図は従来の端部補強をした自転車フレー
ム用繊維強化熱硬化性樹脂パイプを示したものである。 第３図は、本発明自転車フレーム用繊維強化熱硬化性樹
脂パイプの軸方向断面図を示したものである。 第４図は、本発明自転車フレーム用繊維強化熱硬化性樹
脂パイプに金属エンドを圧入した状態の端部軸方向断面
図を示したものである。 第５図は、実施例１の本発明自転車フレーム用繊維強化
熱硬化性樹脂パイプに金属エンドを圧入した状態の端部
軸方向断面図を示したものである。 第６図〜第９図は、比較例として用いた自転車フレーム
用繊維強化熱硬化性樹脂パイプに金属エンドを圧入した
状態の端部軸方向断面図を示したものである。 図面における番号の説明 1:パイプ本体層、2:金属エンド（部材）、3:補強第１
層、4:補強第２層、5:補強第３層FIGS. 1 and 2 show a conventional fiber-reinforced thermosetting resin pipe for a bicycle frame with reinforced end portions. FIG. 3 is an axial sectional view of a fiber-reinforced thermosetting resin pipe for a bicycle frame according to the present invention. FIG. 4 is a sectional view in the axial direction of an end portion of the fiber-reinforced thermosetting resin pipe for a bicycle frame according to the present invention, in which a metal end is press-fitted. FIG. 5 is a sectional view in the axial direction of an end portion of the fiber-reinforced thermosetting resin pipe for a bicycle frame according to the first embodiment of the present invention in which a metal end is press-fitted. 6 to 9 are sectional views in the axial direction of the end portion in a state where a metal end is pressed into a fiber reinforced thermosetting resin pipe for a bicycle frame used as a comparative example. Explanation of the numbers in the drawings 1: pipe body layer, 2: metal end (member), 3: reinforcement first
Layer, 4: Reinforced second layer, 5: Reinforced third layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 二見 和光 神奈川県茅ケ崎市下町屋１―１―１ 宮 田工業株式会社内 審査官 小椋 正幸 (56)参考文献 特開 昭56−139923（ＪＰ，Ａ) 特開 昭60−71234（ＪＰ，Ａ) 特開 昭57−177637（ＪＰ，Ａ) 特開 昭56−127033（ＪＰ，Ａ) ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Wako Futami 1-1-1 Shimomachiya, Chigasaki-shi, Kanagawa Prefecture Examiner, Miyada Industries Co., Ltd. Masayuki Ogura (56) References JP-A-56-139923 (JP, A) JP-A-60-71234 (JP, A) JP-A-57-177637 (JP, A) JP-A-56-127033 (JP, A)
Claims (6)
用される肉厚の均一な自転車フレーム用繊維強化熱硬化
性樹脂パイプにおいて、本体層の内側の該端部に厚さ0.
05〜0.3mmの熱可塑性樹脂の補強第１層と、２％以上の
伸度を有する繊維で強化された厚さ0.5〜1.5mmの補強第
２層と、高弾性繊維で強化された厚さ0.3〜0.8mmの補強
第３層とを有し、補強第２層と補強第３層とは共に熱硬
化性樹脂をマトリックスとしたパイプ軸に対し±80〜90
度配向の繊維補強層であり、かつ各層の深さはエンド部
材の圧入深さより浅い位置で配置されていることを特徴
とする自転車フレーム用繊維強化熱硬化性樹脂パイプ。1. A fiber-reinforced thermosetting resin pipe for a bicycle frame having a uniform thickness used by press-fitting a metal end member into an end of the pipe.
The first layer of thermoplastic resin of 05-0.3mm, the second layer of 0.5-1.5mm reinforced with fiber having elongation of 2% or more, and the thickness reinforced with high elastic fiber It has a reinforcing third layer of 0.3 to 0.8 mm, and both of the reinforcing second layer and the reinforcing third layer are ± 80 to 90 with respect to a pipe shaft using a thermosetting resin as a matrix.
A fiber-reinforced thermosetting resin pipe for a bicycle frame, characterized in that the fiber-reinforced thermosetting resin pipe is a fiber orientation layer having a degree orientation and each layer is arranged at a position shallower than a press-fit depth of an end member.
イプの強化材繊維が炭素繊維である請求項（１）記載の
自転車フレーム用繊維強化熱硬化性樹脂パイプ。2. The fiber reinforced thermosetting resin pipe for a bicycle frame according to claim 1, wherein the reinforcing fibers of the fiber reinforced thermosetting resin pipe for a bicycle frame are carbon fibers.
エステル樹脂、ビニルエステル樹脂、フェノール樹脂又
は／及びポリイミド樹脂である請求項（１）記載の自転
車フレーム用繊維強化熱硬化性樹脂パイプ。3. The fiber reinforced thermosetting resin pipe for a bicycle frame according to claim 1, wherein the thermosetting resin is an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, a phenol resin or / and a polyimide resin.
ド、ポリプロピレン、ポリエチレン、ポリスチレン、ポ
リ塩化ビニル、ポリカーボネイト、ポリアセタール、AB
S、ポリエチレンテレフタレート、ポリブチレンテレフ
タレート又は／及びポリフェニレンオキサイドである請
求項（１）記載の自転車フレーム用繊維強化熱硬化性樹
脂パイプ。4. The thermoplastic resin of the first reinforcing layer is made of polyimide, polypropylene, polyethylene, polystyrene, polyvinyl chloride, polycarbonate, polyacetal, AB
The fiber-reinforced thermosetting resin pipe for a bicycle frame according to claim 1, wherein S, polyethylene terephthalate, polybutylene terephthalate and / or polyphenylene oxide.
が、高伸度低弾性の炭素繊維、ガラス繊維又は／及びア
ラミド繊維である請求項（１）記載の自転車フレーム用
繊維強化熱硬化性樹脂パイプ。5. The fiber for a bicycle frame according to claim 1, wherein the reinforcing fibers of the second reinforcing layer having an elongation of 2% or more are carbon fibers, glass fibers and / or aramid fibers having high elongation and low elasticity. Reinforced thermosetting resin pipe.
の炭素繊維、ボロン繊維又は／及びアルミナ繊維である
請求項（１）記載の自転車フレーム用繊維強化熱硬化性
樹脂パイプ。6. The fiber reinforced thermosetting resin pipe for a bicycle frame according to claim 1, wherein the high elasticity fibers of the third reinforcing layer are carbon fibers, boron fibers and / or alumina fibers having low elongation and high elasticity. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63119676A JP2729631B2 (en) | 1988-05-17 | 1988-05-17 | Fiber reinforced thermosetting resin pipe for bicycle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63119676A JP2729631B2 (en) | 1988-05-17 | 1988-05-17 | Fiber reinforced thermosetting resin pipe for bicycle frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01289783A JPH01289783A (en) | 1989-11-21 |
| JP2729631B2 true JP2729631B2 (en) | 1998-03-18 |
Family
ID=14767295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63119676A Expired - Fee Related JP2729631B2 (en) | 1988-05-17 | 1988-05-17 | Fiber reinforced thermosetting resin pipe for bicycle frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2729631B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0296295U (en) * | 1989-01-23 | 1990-07-31 | ||
| JP2527392B2 (en) * | 1991-12-03 | 1996-08-21 | 財団法人自転車産業振興協会 | Frame for light vehicle made of natural fiber reinforced composite pipe |
-
1988
- 1988-05-17 JP JP63119676A patent/JP2729631B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01289783A (en) | 1989-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5601493A (en) | Drive shaft made of fiber reinforced plastics, and method for connecting pipe made of fire-reinforced plastics | |
| JP4846103B2 (en) | Fiber reinforced resin pipe and power transmission shaft using the same | |
| US7452156B2 (en) | Composite structural member and method for making the same | |
| EP0511843A1 (en) | Production of drive shafts from reinforced plastics pipes | |
| US6190263B1 (en) | Propeller shaft including compressive load transmitting section | |
| GB2045391A (en) | Reinforced tubular structure | |
| EP0683328B1 (en) | Propeller shaft | |
| JP2729631B2 (en) | Fiber reinforced thermosetting resin pipe for bicycle frame | |
| JPH06200951A (en) | Joint method for driving force transmission shaft made of frp with pipe made of frp | |
| JP2001032819A (en) | Power transmission shaft and propeller shaft | |
| JP6540085B2 (en) | Propeller shaft | |
| JP3269285B2 (en) | FRP propeller shaft and method of manufacturing the same | |
| JPH09323364A (en) | Frp cylindrical form and its manufacture | |
| JPH03236946A (en) | Manufacturer of fiber reinforced cylinder tube | |
| JPH0815761B2 (en) | Pipe-shaped fiber reinforced resin structural material | |
| JP2729630B2 (en) | Resin pipe for bicycle frame | |
| JPH0592488A (en) | Drive force transmitting shaft made of fiber-reinforced resin, production thereof, and method for bonding pipe made of fiber-reinforced resin | |
| JPH0356901B2 (en) | ||
| JPS5977117A (en) | Connecting rod of internal-combustion engine and manufacture thereof | |
| JP3391298B2 (en) | Propeller shaft | |
| JPH0742974B2 (en) | Manufacturing method of transmission shaft made of fiber reinforced plastic | |
| JP3183432B2 (en) | Propeller shaft and method of manufacturing the same | |
| JP2002357284A (en) | Combined pipe | |
| JPH0791433A (en) | Propeller shaft and its manufacture | |
| JPH0791431A (en) | Propeller shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |