JP2729630B2 - Resin pipe for bicycle frame - Google Patents
Resin pipe for bicycle frameInfo
- Publication number
- JP2729630B2 JP2729630B2 JP63119675A JP11967588A JP2729630B2 JP 2729630 B2 JP2729630 B2 JP 2729630B2 JP 63119675 A JP63119675 A JP 63119675A JP 11967588 A JP11967588 A JP 11967588A JP 2729630 B2 JP2729630 B2 JP 2729630B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- bicycle frame
- thermosetting resin
- reinforced thermosetting
- fiber
- 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 36
- 239000011347 resin Substances 0.000 title claims description 36
- 229920001187 thermosetting polymer Polymers 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 26
- 239000000835 fiber Substances 0.000 claims description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 8
- 239000004917 carbon fiber Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000009719 polyimide resin Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel 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
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- VNFVKWMKVDOSKT-LREBCSMRSA-N (2r,3r)-2,3-dihydroxybutanedioic acid;piperazine Chemical compound C1CNCCN1.OC(=O)[C@H](O)[C@@H](O)C(O)=O VNFVKWMKVDOSKT-LREBCSMRSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (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硬化
熱強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。Description: TECHNICAL FIELD The present invention relates to a lightweight, high-strength fiber-cured heat-strengthening 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.
（従来技術及び問題点） 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。(Prior Art and Problems) 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.
上記の方法は強化材繊維を±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、この余分の層の付加によ
り軽量化効果が損われる。The above method prevents the expansion of the inner diameter of the pipe end by the layer in which the reinforcing fiber is oriented at ± 80 to 90 degrees, and the effect of improving the strength can be obtained, but the layer of ± 80 to 90 degrees at the center of the pipe is obtained. Is unnecessary for improving the edge strength, and the addition of the extra layer impairs the weight reduction 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。In the above method, since the pipe end is thick, the outer diameter changes, and there is a problem that a step is generated in the reinforcing portion, and further, there is a problem that the pipe is easily broken at the step.
本発明は、従来技術における前記問題点を克服した自
転車フレーム用樹脂パイプを提供しようとするものであ
る。The present invention seeks to provide a 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0.5〜1.0
mmの金属性リングが金属エンド部材の圧入深さより浅い
位置で配置され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 0.5 to 1.0 is applied to the end inside the body layer.
A fiber-reinforced thermosetting resin pipe for a bicycle frame, wherein a metal ring of mm is arranged at a position shallower than a press-fit depth of a metal end 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）金属リングの材質が鉄、アルミニウム、ニッケ
ル、銅又は／及びステンレスである請求項（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 fiber reinforced thermosetting resin pipe for a bicycle frame according to (1), wherein the material of the metal ring is iron, aluminum, nickel, copper or / and stainless steel.
本発明の自転車フレーム用繊維強化熱硬化性樹脂パイ
プは軽量であって、パイプと金属エンドとの接合強度が
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 of the present invention is lightweight, has high joining strength between the pipe and the metal end, and has no step in the outer diameter at the reinforcing portion.
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は端部補強層（金
属リング補強部）、４は電食防止層を示す。3 and 4, reference numeral 1 denotes a fiber reinforced thermosetting resin pipe main body layer for a bicycle frame, 3 denotes an end reinforcing layer (metal ring reinforcing portion), and 4 denotes an electrolytic corrosion preventing layer.
自転車フレーム用繊維強化熱硬化性樹脂パイプ本体層
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 fiber reinforced thermosetting resin pipe body layer 1 for a bicycle frame 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, and particularly reinforced carbon fiber. The material is excellent in weight reduction and high elasticity.
この自転車フレーム用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かでもよく、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。This fiber reinforced thermosetting resin pipe for a bicycle frame may be any of a straight pipe, a curved pipe, and a tapered pipe, and is designed to satisfy bending stiffness, bending strength, torsional stiffness, torsional strength and the like according to the application.
端部補強層３は、金属エンド圧入時にパイプ内側にか
かる内圧と、自転車使用時の振動と衝撃によるパイプ内
側にかかる局所荷重とによる破損を防ぐ効果がある。The end reinforcing layer 3 has an effect of preventing damage due to an internal pressure applied to the inside of the pipe at the time of press-fitting a metal end and a local load applied to the inside of the pipe due to vibration and impact when using a bicycle.
４の電食防止層は、パイプ本体層の炭素繊維と補強用
金属リングを仕切り、絶縁することにより電食を防止す
る。炭素繊維と金属とが接触すると両者の電位差により
電流が流れる金属の接触面が腐食するが、電食防止層は
このような腐食を防止する。The anti-corrosion layer of No. 4 separates the carbon fiber of the pipe main body layer and the metal ring for reinforcement, and prevents the electro-corrosion by insulating them. When the carbon fiber and the metal come into contact with each other, the contact surface of the metal through which current flows due to the potential difference between the two corrodes. The electrolytic corrosion preventing layer prevents such corrosion.
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 高強度のタイプ炭素繊維〔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。両端部
は、パイプ内層に鉄製の厚さ0.5mmのリングを、パイプ
端より20mmの間に配置し、その周りをガラス繊維を一方
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
厚さ0.2mmとなるように積層し、パイプの肉厚は全体が
均一となるように調整した。 Example 1 High-strength type carbon fiber [Ves manufactured by Toho Rayon Co., Ltd.
Fight ] In one direction
Epoxy resin prepreg (curing temperature 130 ° C)
± 45mm inner layer in the axial direction on an iron mandrel with an outer diameter of 20mm
Degree, the outer layer is oriented at a fiber angle of 0 °, and the bending elasticity of the pipe
Rate is 9,000kg / mmTwoLaminated so that it becomes a straight pipe of
The number of laminations in the portion where the strong fiber layer is disposed was reduced. Both ends
A 0.5 mm thick iron ring on the inner layer of the pipe
Place it between 20mm from the end and apply glass fiber around it
The same epoxy resin prepreg as above
Laminated to a thickness of 0.2mm, the entire wall thickness of the pipe
It was adjusted to be 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
化性樹脂パイプを得た。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.
このパイプに、S45C製の金属エンドを深さ50mmに圧入
し、パイプの破壊テストを行ったところ、エンド部材か
ら内圧がかかっても押し拡がることがなく形状を保持
し、高い破壊強度を示した。A metal end made of S45C was pressed into this pipe at a depth of 50 mm, and the pipe was subjected to a destruction test.The pipe did not expand even if internal pressure was applied from the end member, and maintained its shape. .
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の軸方向断面図を示し
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、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。 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:端部補強層（金
属リング補強部）、4:電食防止層、5:±80〜90度繊維強
化層FIG. 1 and FIG. 2 are cross-sectional views in the axial direction of a conventional fiber-reinforced thermosetting resin pipe for a bicycle frame having a reinforced end portion. 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 first embodiment of the present invention in which a metal end is press-fitted. Description of the numbers in the drawings 1: pipe body layer, 2: metal end member, 3: end reinforcement layer (metal ring reinforcement), 4: anti-corrosion layer, 5: ± 80 to 90 degree fiber reinforced 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60−71231（ＪＰ，Ａ) 特開 昭56−139923（ＪＰ，Ａ) 特開 昭60−71234（ＪＰ，Ａ) ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Wako Futami 1-1-1 Shimomachiya, Chigasaki-shi, Kanagawa Examiner, Miyata Kogyo Co., Ltd. Masayuki Ogura (56) References JP-A-60-71231 (JP, A JP-A-56-139923 (JP, A) JP-A-60-71234 (JP, A)
Claims (4)
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.
5〜1.0mmの金属性リングが金属エンド部材の圧入深さよ
り浅い位置で配置され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.
A fiber reinforced thermosetting resin pipe for a bicycle frame, wherein a metal ring of 5 to 1.0 mm is arranged at a position shallower than a press-fit depth of a metal 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.
ッケル、銅又は／及びステンレスである請求項（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 fiber reinforced thermosetting resin pipe for a bicycle frame according to claim 1, wherein the material of the metal ring is iron, aluminum, nickel, copper or / and stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63119675A JP2729630B2 (en) | 1988-05-17 | 1988-05-17 | Resin pipe for bicycle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63119675A JP2729630B2 (en) | 1988-05-17 | 1988-05-17 | Resin pipe for bicycle frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01289782A JPH01289782A (en) | 1989-11-21 |
| JP2729630B2 true JP2729630B2 (en) | 1998-03-18 |
Family
ID=14767269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63119675A Expired - Fee Related JP2729630B2 (en) | 1988-05-17 | 1988-05-17 | Resin pipe for bicycle frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2729630B2 (en) |
-
1988
- 1988-05-17 JP JP63119675A patent/JP2729630B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01289782A (en) | 1989-11-21 |
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