JPS60109628A - Hollow helical spring - Google Patents
Hollow helical springInfo
- Publication number
- JPS60109628A JPS60109628A JP21484583A JP21484583A JPS60109628A JP S60109628 A JPS60109628 A JP S60109628A JP 21484583 A JP21484583 A JP 21484583A JP 21484583 A JP21484583 A JP 21484583A JP S60109628 A JPS60109628 A JP S60109628A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic rubber
- tube
- rubber tube
- helical spring
- cylindrical
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
- F16F1/3665—Wound springs
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は炭素繊維で強化された中空コイルばねに関する
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a hollow coil spring reinforced with carbon fibers.
オートバイ、自動車などの軽量化を計るための一手段と
してコイルばねの軽量化がクローズアップされつつある
。しかし、この目的を達成するためには金属では限界が
あり、それに代わる新素材を探し出すことが必要である
。数多（ある繊維強化樹脂の中でもと９わけ炭素繊維強
化樹脂（以下ＣＦＲＰと称する）はその有力候補の一つ
である。特にＣＦ、ＲＰでコイルばねを製造することが
出来れば金属との比重の差から見ても軽量化の可能性は
犬であり、しかも優れた剛性、疲労強度、振動減衰性を
生かすことが出来れば、金属とは異なるまった（新しい
コイルばねを製造することが可能となる。Coil springs are becoming more and more popular as a way to reduce the weight of motorcycles, automobiles, etc. However, in order to achieve this goal, metals have limitations, and it is necessary to find new materials to replace them. Among the many fiber-reinforced resins, carbon fiber-reinforced resin (hereinafter referred to as CFRP) is one of the most promising candidates.In particular, if a coil spring can be manufactured using CF or RP, the specific gravity of the metal Considering the difference in weight, the possibility of weight reduction is great, and if we can take advantage of its excellent rigidity, fatigue strength, and vibration damping properties, it will be possible to manufacture new coil springs that are different from metals. becomes.
しかし、繊維の配列技術、真円を保ち、ボイドレスに成
形する技術、さらに経済的な量産技術など未解決な点が
数多（あり、ＣＦ’ＲＰ製コイルばねはいまだ実用段階
まではいたっていないのが現状である。However, there are many unresolved issues, such as fiber arrangement technology, technology to maintain a perfect circle and void-free molding, and economical mass production technology (and CF'RP coil springs have not yet reached the practical stage). is the current situation.
本発明はこれらの諸問題を一気に解決し、極端な軽量化
を実現し、しかも安価なＣＦＲＰ製中空コイルばねを得
ることにある。The object of the present invention is to solve these problems at once, and to obtain a hollow coil spring made of CFRP that is extremely lightweight and inexpensive.
本発明の要旨は、円筒状合成ゴム（１）の上に、合成ゴ
ムチューブ（２）を被覆して芯材を形成し、その外層に
適当な角度をもたした炭素繊維強化樹脂糸条、プリプレ
グもしくは織物を巻付けて棒状物を形成し、その外層に
合成ゴムチューブ（４）を被覆したのち、金型に巻付け
、硬化後、上記（１１，（２）、 （４１のうち少な（
とも（１１，（４）を除去して炭素繊維強化樹脂糸条窒
コイルばねとするものである。The gist of the present invention is to form a core material by covering a synthetic rubber tube (2) on a cylindrical synthetic rubber (1), and a carbon fiber reinforced resin thread having an appropriate angle on the outer layer. A rod-shaped object is formed by wrapping prepreg or fabric, and the outer layer is covered with a synthetic rubber tube (4), and then wrapped around a mold and cured.
Both (11 and (4)) are removed to create a carbon fiber-reinforced resin yarn nitride coil spring.
本発明によるコイルばねは金属のそれと比較し少な（と
も５０％以上の軽量化を計ｒ＞＊るものである。The coil spring according to the present invention is lighter than a metal one (by more than 50%).
本発明で使用する円筒状合成ゴムはシリコンゴム、フッ
素ゴム、アクリルゴムなどの耐熱性にすぐれ、熱膨張の
少ない寸法安定性のあるものが必要である。又、これに
組合せるチューブも耐熱性があり、樹脂に侵されない適
度な厚みの合成ゴムを選択する必要がある。The cylindrical synthetic rubber used in the present invention needs to be one with excellent heat resistance, low thermal expansion, and dimensional stability, such as silicone rubber, fluororubber, or acrylic rubber. Furthermore, the tube to be combined with this must also be heat resistant and must be made of synthetic rubber with an appropriate thickness that will not be corroded by the resin.
本発明のコイルばね本体に使用する炭素繊維はトウ状又
はテープ状であればフィラメントワイ／デ／グ法、グリ
プレグ又は織物であればシ、−トラップ法により芯材に
巻付けることが可能である。The carbon fiber used in the coil spring body of the present invention can be wrapped around the core material by the filament wire/de/g method if it is in the form of a tow or tape, or by the wire-trap method if it is a grippreg or woven fabric. .
一方、使用する樹脂はエポキシ樹脂、ポリイミド樹脂な
どの熱硬化性樹脂であることが望ましい。On the other hand, the resin used is preferably a thermosetting resin such as epoxy resin or polyimide resin.
金型に巻付けられた棒状物は、硬化後には金型から取出
し、最外層の合成ゴムチューブを切開し、次に芯材の内
層にある円筒状合成ゴムを敗り除さ、さらに必要に応じ
外層のチューブを取り除くことにより成形品は完全に中
空となる。After curing, the rod wrapped around the mold is removed from the mold, the outermost layer of synthetic rubber tube is cut open, the cylindrical synthetic rubber on the inner layer of the core material is removed, and then the cylindrical synthetic rubber tube on the inner layer of the core material is removed. By removing the outer layer of the tube, the molded article becomes completely hollow.
ごの芯材の内層にある円筒状ゴムは金型に巻付ける時棒
状物の扁平化を防止すると同時に硬化時には一種の内圧
をＣＦＲＰ部分に均一にあたえ成形品をボイドレスにし
、しかもその真円度を向上させる役割をはだすものであ
る。The cylindrical rubber in the inner layer of the core material prevents the rod from flattening when wrapped around the mold, and at the same time uniformly applies a kind of internal pressure to the CFRP part during curing, making the molded product void-free and maintaining its roundness. It plays a role in improving the quality of life.
次に実施例によって、本発明の詳細を具体的に記載する
。Next, the details of the present invention will be specifically described with reference to Examples.
実施例１
外径１０龍の合成ゴムの円筒状物（１）を１．５ｍ用意
し、内径１０１１の合成ゴムチューブ“（２）に差し込
み、しかるのちチューブの外側に離型剤を塗布し、炭素
繊維一方向グリグレグを角度４５゜で交互積層し、長さ
１．５ｍ、幅Ｑ、５ｆｆｌＫカットしたシート状物でそ
の上から巻付けて棒状物（３）とし、次に巻終った外側
に内径１８龍の合成ゴムチューブ（４）を被せたのち螺
旋状に溝の掘った金型に巻付け、オートクレーブに入れ
５ｋｐ／ｉｎ″の圧力をかけて１４０℃、２時間の硬化
を行った。硬化が完全に終了したのち金型からコイル状
物を増出し最外層のチューブを切開し、続いて合成ゴム
（１）を引抜さ、さらにゴムチューブ（２）を引抜いた
ところ、肉厚４ ｍｍの第２図の如ｇＣＦＲＰ製中空コ
イルばね（５）が得られた。Example 1 A 1.5 m synthetic rubber cylindrical object (1) with an outer diameter of 10 mm was prepared and inserted into a synthetic rubber tube (2) with an inner diameter of 1011 mm, and then a mold release agent was applied to the outside of the tube. Carbon fiber unidirectional Grigreg is laminated alternately at an angle of 45°, and a sheet material cut to length 1.5m, width Q, and 5fflK is wrapped around it to form a rod-shaped material (3), and then a rod-shaped material (3) is formed on the outside of the finished winding. After covering it with a synthetic rubber tube (4) having an inner diameter of 18 mm, it was wound around a mold with a spiral groove, and the mold was placed in an autoclave and cured at 140° C. for 2 hours under a pressure of 5 kp/in''. After complete curing, the coiled material was expanded from the mold, the outermost tube was cut open, the synthetic rubber (1) was pulled out, and the rubber tube (2) was pulled out, resulting in a wall thickness of 4 mm. A CFRP hollow coil spring (5) as shown in FIG. 2 was obtained.
実施例２
直径５朋のフッ素ゴム１．５ｍを内８５ ｖｎｍ、 外
径７龍のフッ素ゴムチューブ〕、５ｍに差し込み芯材を
形放し、該チューブの外側に接着剤を塗布し、次に炭素
繊維織物をエポキシ樹脂で含浸後±４５°に積層したシ
ート状物を長さ１．５ｍ、幅０．４ｍにカットし、該芯
材の長手方向に巻付け、直径１８．、の棒状物をつくり
、その上から直径１８龍のフッ素チューブを被せて螺旋
状に溝を掘った金型に巻付け、オートクレーブにて１８
０°×２時間の硬化を行い、硬化後コイル状となった成
形品を金型より取出し最外層のフッ素チューブ（４）を
切開し、次に最内層のフッ素ゴム（１）を圧空（３に）
／龍２）にてコイル外に押し出したところ、厚さ２龍の
フッ素ゴムチューブ（２１を内蔵したＣＦＲＰ製中空コ
イルばねが得られた。Example 2 Insert 1.5 m of fluororubber with a diameter of 5 mm into a 5 m fluorine rubber tube with an inner diameter of 85 nm and an outer diameter of 7 mm, release the core material, apply adhesive to the outside of the tube, and then apply carbon After impregnating fiber fabric with epoxy resin, a sheet-like material laminated at ±45° is cut to a length of 1.5 m and a width of 0.4 m, and wound in the longitudinal direction of the core material, with a diameter of 18. , a fluorine tube with a diameter of 18 mm was placed over it, wrapped around a mold with a spiral groove, and placed in an autoclave for 18 mm in diameter.
After curing for 0° x 2 hours, take out the coiled molded product from the mold, cut out the outermost layer of fluorine tube (4), and then remove the innermost layer of fluorine rubber (1) using compressed air (3). )
When the spring was extruded out of the coil using a CFRP hollow coil spring having a built-in fluororubber tube (21) with a thickness of 2 mm, a hollow coil spring made of CFRP was obtained.
第１図は、本発明の中空コイルげねをっ（る前の構成を
示す断面図、第２図は、本発明の中空コイルばねの模式
図、第３図（イ）、（ロ）は、中空コイルばねの断面図
を示す。
（１）円筒状合成ゴム
（２） 合成ゴムチューブ
（３）炭素繊維強化樹脂層
（４）合成ゴムチューブ
（５） 中空コイルばね
脅 １ 図
＋２図
才 ３ 図
（０） （イ）Fig. 1 is a sectional view showing the structure of the hollow coil spring of the present invention before it is assembled, Fig. 2 is a schematic diagram of the hollow coil spring of the present invention, and Figs. 3 (a) and (b) are , shows a cross-sectional view of a hollow coil spring. (1) Cylindrical synthetic rubber (2) Synthetic rubber tube (3) Carbon fiber reinforced resin layer (4) Synthetic rubber tube (5) Hollow coil spring 1 Figure + 2 Figures 3 Figure (0) (a)
Claims (1)
を被覆して芯材を形成し、 その外層に適当角度をもたした炭素繊維強化樹脂糸条、
ブリグレグもしくは織物を巻付けて棒状物を形成し、 その外層に合成ゴムチューブ（４）を被覆したのち、金
型に巻付け、硬化後、 上記（１１，（２）、 （４１のうち少な（とも（１１
，（４）を除去してなる炭素繊維強化樹脂製中空コイル
ばね。[Claims] A synthetic rubber tube (2) is placed on the cylindrical synthetic rubber (1).
is coated to form a core material, and the outer layer is a carbon fiber reinforced resin thread with an appropriate angle,
Wrap Brigreg or fabric to form a rod-shaped object, cover the outer layer with synthetic rubber tube (4), wrap it around a mold, and after curing, press the Tomo (11
, (4) is removed. A hollow coil spring made of carbon fiber reinforced resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21484583A JPS60109628A (en) | 1983-11-15 | 1983-11-15 | Hollow helical spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21484583A JPS60109628A (en) | 1983-11-15 | 1983-11-15 | Hollow helical spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60109628A true JPS60109628A (en) | 1985-06-15 |
Family
ID=16662492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21484583A Pending JPS60109628A (en) | 1983-11-15 | 1983-11-15 | Hollow helical spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60109628A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166904A (en) * | 1986-01-18 | 1987-07-23 | Sumitomo Electric Ind Ltd | Shard carbon film covered cutting tool for ceramics sintered body machining |
| DE19939460C1 (en) * | 1999-08-20 | 2001-01-25 | Daimler Chrysler Ag | Coil spring has a hollow tubular spring wire of plastics/glass fibers and an opening along its length with an elastic coupling between the facing and spaced wall sections for improved performance under static/dynamic forces |
| WO2002099307A1 (en) * | 2001-06-01 | 2002-12-12 | The University Of Akron | Fiber-reinforced composite springs |
| WO2006058526A1 (en) * | 2004-11-30 | 2006-06-08 | Mahle International Gmbh | Pressure spring for a valve drive |
| JP2007064389A (en) * | 2005-08-31 | 2007-03-15 | Mizuno Technics Kk | Coil spring made of fiber-reinforced resin, and its manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5618136A (en) * | 1979-07-12 | 1981-02-20 | Exxon Research Engineering Co | Coil spring and its manufacture |
| JPS5783738A (en) * | 1980-11-11 | 1982-05-25 | Nissan Motor Co Ltd | Formation of frp coil spring |
| JPS5856234B2 (en) * | 1976-07-23 | 1983-12-14 | 日本航空電子工業株式会社 | How to connect ribbon cable and connector |
-
1983
- 1983-11-15 JP JP21484583A patent/JPS60109628A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856234B2 (en) * | 1976-07-23 | 1983-12-14 | 日本航空電子工業株式会社 | How to connect ribbon cable and connector |
| JPS5618136A (en) * | 1979-07-12 | 1981-02-20 | Exxon Research Engineering Co | Coil spring and its manufacture |
| JPS5783738A (en) * | 1980-11-11 | 1982-05-25 | Nissan Motor Co Ltd | Formation of frp coil spring |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166904A (en) * | 1986-01-18 | 1987-07-23 | Sumitomo Electric Ind Ltd | Shard carbon film covered cutting tool for ceramics sintered body machining |
| DE19939460C1 (en) * | 1999-08-20 | 2001-01-25 | Daimler Chrysler Ag | Coil spring has a hollow tubular spring wire of plastics/glass fibers and an opening along its length with an elastic coupling between the facing and spaced wall sections for improved performance under static/dynamic forces |
| WO2002099307A1 (en) * | 2001-06-01 | 2002-12-12 | The University Of Akron | Fiber-reinforced composite springs |
| WO2006058526A1 (en) * | 2004-11-30 | 2006-06-08 | Mahle International Gmbh | Pressure spring for a valve drive |
| JP2007064389A (en) * | 2005-08-31 | 2007-03-15 | Mizuno Technics Kk | Coil spring made of fiber-reinforced resin, and its manufacturing method |
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