JPS63295239A - Material for reinforced plastic spring and its manufacture - Google Patents
Material for reinforced plastic spring and its manufactureInfo
- Publication number
- JPS63295239A JPS63295239A JP62132061A JP13206187A JPS63295239A JP S63295239 A JPS63295239 A JP S63295239A JP 62132061 A JP62132061 A JP 62132061A JP 13206187 A JP13206187 A JP 13206187A JP S63295239 A JPS63295239 A JP S63295239A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- linear
- impregnated
- ultraviolet
- reinforced plastic
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000002990 reinforced plastic Substances 0.000 title claims description 13
- 229920005989 resin Polymers 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 41
- 239000010409 thin film Substances 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims description 26
- 239000003973 paint Substances 0.000 claims description 18
- 239000012783 reinforcing fiber Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 3
- 239000002344 surface layer Substances 0.000 claims 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims 1
- 239000011151 fibre-reinforced plastic Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 19
- 239000011248 coating agent Substances 0.000 abstract description 17
- 239000011162 core material Substances 0.000 abstract description 10
- 238000001723 curing Methods 0.000 abstract description 7
- 239000010408 film Substances 0.000 abstract description 4
- 238000013007 heat curing Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 238000001029 thermal curing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000004577 thatch Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Springs (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、線状、又は帯伏の強化プラスチック製ばね用
素材及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a linear or banded reinforced plastic spring material and a method for manufacturing the same.
［従来技術］
従来の強化プラスチックばねの製造方法は、−例として
特開昭５２−３４１６１号公報、「強化プラスチック製
コイルバネ」に示すように、繊維束い樹脂を含浸した後
、薄肉のＡＩ管に導入してコイルバネの形状に整形、熱
硬化後、化学的にＡＩ！管を溶・解脱型する方法、又特
開昭５２−３［１２５０号公報、「強化プラスチックコ
イルばね」に示されるように、ビニール、ナイロンを被
覆するような方法等がある。[Prior Art] A conventional method for manufacturing reinforced plastic springs is as shown in Japanese Patent Application Laid-Open No. 52-34161, "Reinforced Plastic Coil Spring," which involves impregnating a fiber-binding resin and then forming a thin-walled AI tube. Introduced into the coil spring, shaped into the shape of a coil spring, heat cured, and chemically AI! There are methods of melting and releasing the tube, and methods of coating the tube with vinyl or nylon, as shown in Japanese Patent Application Laid-Open No. 1250/1983, "Reinforced Plastic Coil Spring."
［発明が解決しようとする問題点］
ばねの連続成形に不可欠の長尺素材を製造するには、繊
維補強梁に含浸させた粘性の低い熱硬化性樹脂を保持し
、滲み出さない構造にしなければならない。上述のよう
にＡ１管やＣｕ管等に導入する方法があるが、長尺化す
るには技術的に困難性があり、比較的短尺のものでもコ
スト高となる問題があり、ナイロンやビニールを被覆す
る方法では、ｖｉ覆時の熱の影響が内側の熱硬化性樹脂
に影響する等の問題がある。[Problems to be solved by the invention] In order to manufacture the long material essential for continuous spring molding, it is necessary to create a structure that retains the low-viscosity thermosetting resin impregnated into the fiber reinforced beam and prevents it from seeping out. Must be. As mentioned above, there is a method of introducing it into A1 pipes, Cu pipes, etc., but it is technically difficult to make it long, and even with relatively short lengths there is a problem of high cost. The coating method has problems such as the effect of heat during VI coating on the inner thermosetting resin.
［発明の目的・構成］
本発明は上記の問題を解決する目的でなされたものであ
って、補強繊維束にエポキシ、ポリエステル笠の熱硬化
性樹脂を含浸させ、線状、又は帯状に成形した後、含浸
した樹脂が滲み出たり、他へ付着したりするのを防ぐた
め、紫外線硬化型樹脂を素材表面で硬化させ、可撓性の
ある薄膜を線状、又は帯状素材の表面に備える強化プラ
スチック製ばね用素材及びその製造方法にある。[Purpose/Structure of the Invention] The present invention was made to solve the above problems, and is made by impregnating a reinforcing fiber bundle with a thermosetting resin such as epoxy or polyester cap, and forming it into a linear or band shape. After that, in order to prevent the impregnated resin from seeping out or adhering to other materials, UV-curable resin is cured on the surface of the material, and a flexible thin film is provided on the surface of the linear or strip-shaped material. Materials for plastic springs and methods of manufacturing the same.
以下図面に示す実施例により本発明を説明する。The present invention will be explained below with reference to embodiments shown in the drawings.
第３図は本発明による強化プラスチックばね素材の実施
例を示す。芯材Ｃの周りに熱硬化性樹脂を含浸した補強
繊維束Ｆを配し、その周りを熱処理前の熱硬化性樹脂を
保持するため、紫外線照射により硬化した可撓性の薄膜
Ｓを備えるものを示している。FIG. 3 shows an embodiment of a reinforced plastic spring material according to the invention. A reinforcing fiber bundle F impregnated with a thermosetting resin is arranged around the core material C, and a flexible thin film S cured by ultraviolet irradiation is provided around the reinforcing fiber bundle F to retain the thermosetting resin before heat treatment. It shows.
本発明は、熱硬化性樹脂を含浸した補強繊維束を整形ダ
イスにて整形後、紫外線硬化型塗料を全面に塗布し、紫
外線照射装置にて前記塗料を硬化させる方法を採るが、
後述のように紫外線、熱硬化併用型の樹脂を含浸させて
紫外線照射を表面にのみ行う方法をとる。The present invention employs a method in which a reinforcing fiber bundle impregnated with a thermosetting resin is shaped using a shaping die, then an ultraviolet curable paint is applied to the entire surface, and the coating is cured using an ultraviolet irradiation device.
As will be described later, a method is used in which UV rays are impregnated with a thermosetting resin and only the surface is irradiated with UV rays.
第１図は本発明を実施する装置を示し、第２図は本発明
の実施に入る前の補強繊維束製造工程を示す。FIG. 1 shows an apparatus for implementing the present invention, and FIG. 2 shows a reinforcing fiber bundle manufacturing process before implementing the present invention.
ここで、まず第２図に示す製造工程について説明する。First, the manufacturing process shown in FIG. 2 will be explained.
図示のように、リールサプライ装置１より芯材５が繰り
出され、これにラッピング機２により、芯材５の周りに
回転する繊維東送り出しり−ル３より整形された繊維束
６が芯材５の周りに束状にして巻かれ、リール巻取り装
ｆｉ！ｉ：４に巻取られる。As shown in the figure, a core material 5 is fed out from a reel supply device 1, and a fiber bundle 6, which has been shaped by a fiber east feed-out rule 3 that rotates around the core material 5, is fed to the core material 5 by a wrapping machine 2. It is wound in a bundle around the reel winding device fi! i: Winded up to 4.
この際、芯材５には線状あるいは帯状断面を打するもの
が用いられ、前記繊維束は相似的形状に形成される。又
、繊維束として炭素、アラミド、ガラス繊維が用いられ
る。At this time, the core material 5 used has a linear or band-shaped cross section, and the fiber bundles are formed into similar shapes. Further, carbon, aramid, and glass fibers are used as the fiber bundle.
その後、巻取られた補強繊維束に熱硬化性樹脂を含浸す
る。このように熱硬化性樹脂を含浸した補強繊維束を第
１図に示す装置にかける。Thereafter, the rolled-up reinforcing fiber bundle is impregnated with a thermosetting resin. The reinforcing fiber bundle impregnated with the thermosetting resin in this manner is applied to the apparatus shown in FIG.
リールサプライ装置１より熱硬化性樹脂を含浸した補強
繊維束７を成形用ダイス８を通して紫外線硬化型塗料塗
布装置９を通す。紫外線硬化型塗料塗布装置９には、塗
料タンクｌＯより紫外線硬化型塗料が供給される。前記
塗料塗布装置９により紫外線硬化型塗料の全表面塗布を
うけた前記補強繊維束７は紫外線照射装置！Ｉを通し、
前記塗料を硬化させ、可撓性の薄膜を形成する。このと
き、含浸樹脂と塗布塗料が混合する前に紫外線を■１射
して薄膜を形成することが必要である。０．３１厚みの
膜が２秒以下で固化可能な紫外線硬化型塗料の使用が極
めて重要である。A reinforcing fiber bundle 7 impregnated with a thermosetting resin is fed from a reel supply device 1 through a molding die 8 and an ultraviolet curable paint coating device 9. The ultraviolet curable paint coating device 9 is supplied with ultraviolet curable paint from a paint tank IO. The reinforcing fiber bundle 7, whose entire surface has been coated with ultraviolet curing paint by the paint coating device 9, is exposed to the ultraviolet irradiation device! Through I,
The paint is cured to form a flexible thin film. At this time, it is necessary to irradiate ultraviolet rays to form a thin film before mixing the impregnating resin and the coating material. It is extremely important to use UV-curable paints that can solidify a 0.31-thick film in less than 2 seconds.
この薄膜を形成する物質に要求される特性は次のごとく
である。The properties required of the material forming this thin film are as follows.
（１１含浸している熱硬化性樹脂と反応しないこと。(11) Do not react with the impregnated thermosetting resin.
■熱硬化処理が終了まで樹脂を十分保持できること。■Be able to hold the resin sufficiently until the heat curing process is completed.
（３）ばねとして実用時に悪影響を与えないものである
こと。(3) The spring must not have any adverse effects during practical use.
（４連続して長尺素材への薄膜形成が可能であること。(It is possible to form a thin film on a long material 4 times in a row.
このような紫外線硬化型塗料としては、補強繊維束に含
浸される熱硬化性樹脂、例えばエボキン樹脂、ポリエス
テル樹脂に対して、ウレタン系紫外線塗料又はエボキン
系紫外線塗料が好適である。As such an ultraviolet curable paint, a urethane-based UV paint or an Evokin-based UV paint is suitable for the thermosetting resin impregnated into the reinforcing fiber bundle, such as Evokin resin or polyester resin.
上記のようにして連続的に作られ、表面に可撓性のある
薄膜を備える、線杖あるいは帯状の熱硬化性樹脂含浸の
ばね素材は、その後所要のばね形状に成形され、熱硬化
処理を施して、ばねが作製される。The wire rod or band-shaped thermosetting resin-impregnated spring material, which is continuously produced as described above and has a flexible thin film on its surface, is then formed into the desired spring shape and subjected to a thermosetting treatment. Then, a spring is produced.
ばね形状に成形する際に表面の薄膜が破損しないために
は、薄膜の厚さとして最低０．１ｍ＋＋程度が必要であ
る。この厚さが１．Ｏｗを超えると素材として剛性が高
くなり過ぎ、又曲げ応力によって破損することがあるの
で好ましくない。もちろん、膜厚を厚くするには紫外線
の照射量を多くする必要があり、紫外線照射２ｉ置を強
化するか、又は時間当りの処理量を下げることになり、
いずれも経済的でない。In order to prevent the thin film on the surface from being damaged when forming it into a spring shape, the thickness of the thin film must be at least about 0.1 m++. This thickness is 1. Exceeding Ow is not preferable because the material becomes too rigid and may break due to bending stress. Of course, in order to thicken the film, it is necessary to increase the amount of UV irradiation, which means either increasing the UV irradiation setting or lowering the amount of treatment per hour.
Neither is economical.
又、最近熱硬化性樹脂であって、且つ紫外線照射によっ
ても硬化する特性を打する紫外線、熱硬化併用型の樹脂
が開発されている。この特性を訂する樹脂を使用すれば
、前記実施例で説明した紫外線硬化型樹脂の塗布工程（
第１図）は省略でき又薄膜の厚さを調整するには、紫外
線の照射量を調節することにより自在に可能であるから
、目的とする用途に合わせて適宜製造ラインの運転条件
のみを制御して生産を続けることができるという多大の
効果を仔している。Recently, a thermosetting resin that can be cured by ultraviolet rays and thermosetting has been developed. If a resin that improves this property is used, the coating process of the ultraviolet curable resin explained in the example above (
(Fig. 1) can be omitted, and the thickness of the thin film can be adjusted freely by adjusting the amount of ultraviolet irradiation, so it is possible to control only the operating conditions of the production line as appropriate according to the intended use. This has the great effect of allowing production to continue.
［発明の効果］
本発明によれば、連続的に表面に薄膜を備える熱硬化性
樹脂含浸のばね用素材の製造が可能となる。すなわち、
硬化処理前の熱硬化性樹脂表面を紫外線硬化型の塗料で
全面的に被覆して、短時間内に前記塗料のみを硬化させ
、外表面に可撓性のある薄膜を形成するので、硬化処理
前にある樹脂は繊維束より離脱することなく、外部に滲
み出すことが防止できるばね素材が連続的に製造できる
。[Effects of the Invention] According to the present invention, it is possible to manufacture a thermosetting resin-impregnated spring material having a continuous thin film on the surface. That is,
The surface of the thermosetting resin before the curing process is completely covered with an ultraviolet curable paint, and only the paint is cured within a short time, forming a flexible thin film on the outer surface, so the curing process The resin at the front does not separate from the fiber bundle, and a spring material that can be prevented from seeping out can be manufactured continuously.
紫外線硬化型の塗料に紫外線照射により即成型のものを
使用すれば、より連続、高速の製造が可能となる。If a UV-curable paint is used that can be molded immediately by UV irradiation, more continuous and high-speed production becomes possible.
ばね成形、熱硬化後、表面の紫外線硬化型樹脂薄膜の除
去は不要であり、前記紫外線硬化型樹脂の材質によって
、実用時の環境に対する表面性能の向」二が期待できる
。After spring molding and heat curing, it is not necessary to remove the ultraviolet curable resin thin film on the surface, and depending on the material of the ultraviolet curable resin, it is expected that the surface performance against the environment during practical use will be improved.
一方、本発明による強化プラスチック製ばね用素材はそ
の表面に樹脂膜を備えているので、内部よりの樹脂のに
じみはなく、ばね形状への成形、その後の熱処理等を円
滑に行うことができる。On the other hand, since the reinforced plastic spring material according to the present invention has a resin film on its surface, the resin does not bleed from the inside and can be smoothly formed into a spring shape and subsequently subjected to heat treatment.
第１図は本発明の実施装置の一例を示す。
第２図は繊維束製造工程を示す。
第３図は本発明により製造されたばね用素材を一部断面
をもって示す。
Ｃ・・・芯材、Ｆ・・・樹脂を含浸した補強繊維束、Ｓ
・・・可ｆＡ性薄膜、１・・・リールサプライ装置、２
・・・う７ピング機、３・・・繊維東送り出しリール、
４・・・リール巻取り装置、５・・・芯材、６・・・繊
維束、７・・・熱硬化性樹脂を含浸した補強繊維束、８
・・・成形ダイス、９・・・紫外線び化型塗料塗布装置
、ＩＯ・・・塗料タンク、１１・・・紫外線照射装置。
茅 １ 区
隻 ２ 図
と
屏 ３ 図FIG. 1 shows an example of an apparatus for implementing the present invention. FIG. 2 shows the fiber bundle manufacturing process. FIG. 3 shows, partially in section, a spring material manufactured according to the present invention. C...core material, F...reinforced fiber bundle impregnated with resin, S
...fable thin film, 1... reel supply device, 2
... U7 ping machine, 3... Textile east sending reel,
4... Reel winding device, 5... Core material, 6... Fiber bundle, 7... Reinforcing fiber bundle impregnated with thermosetting resin, 8
. . . Molding die, 9 . . . Ultraviolet light ray type paint application device, IO . . . Paint tank, 11 . . . Ultraviolet ray irradiation device. Thatch 1 Ward ship 2 Diagram and folding 3 Diagram
Claims (4)
は帯状素材に成形し、該線状素材、又は帯状素材を成形
し、熱硬化させて強化プラスチック製ばねを得る、繊維
強化プラスチックばね用素材であって、熱硬化性樹脂を
含浸させた線状、又は帯状素材の表面に０．１ｍｍ〜１
．０ｍｍ厚さの部分のみ紫外線照射により硬化させた可
撓性薄膜を備えることを特徴とする強化プラスチック製
ばね用素材。(1) Fiber reinforced by impregnating a reinforcing fiber bundle with a thermosetting resin and molding it into a linear or band-shaped material, molding the linear material or band-shaped material, and thermosetting it to obtain a reinforced plastic spring. A plastic spring material with a thickness of 0.1 mm to 1 mm on the surface of a linear or strip material impregnated with thermosetting resin.
．． A reinforced plastic spring material characterized by having a flexible thin film cured by ultraviolet irradiation only in the 0 mm thick portion.
、又は帯状素材に成形し、該線状素材、又は帯状素材を
成形し、熱硬化させて強化プラスチック製ばねを得る、
繊維強化プラスチックばね用素材の製造方法において、
前記樹脂を含浸させた線状、又は帯状素材の全表面に紫
外線照射して表面層のみを紫外線照射により紫外線硬化
させることにより、前記素材の表面に可撓性薄膜を形成
することを特徴とする強化プラスチック製ばね用素材の
製造方法。(2) Impregnating a reinforcing fiber bundle with a thermosetting resin and forming it into a linear material or band-shaped material, molding the linear material or band-shaped material, and thermosetting it to obtain a reinforced plastic spring;
In the manufacturing method of fiber reinforced plastic spring material,
A flexible thin film is formed on the surface of the material by irradiating the entire surface of the linear or band-shaped material impregnated with the resin and curing only the surface layer with UV rays. A method for manufacturing reinforced plastic spring materials.
、又は帯状素材の表面に紫外線硬化型樹脂塗料を塗付し
、紫外線照射して前記紫外線硬化型樹脂を硬化させるこ
とにより、前記素材の表面部分に可撓性薄膜を形成する
特許請求の範囲第２項記載の強化プラスチック製ばね用
素材の製造方法。(3) By applying an ultraviolet curable resin paint to the surface of a linear or band-shaped material made by impregnating a reinforcing fiber bundle with a thermosetting resin, and curing the ultraviolet curable resin by irradiating it with ultraviolet rays, 3. The method for manufacturing a reinforced plastic spring material according to claim 2, wherein a flexible thin film is formed on a surface portion of the material.
性を合せもつ熱硬化性樹脂を含浸し、前記樹脂を含浸さ
せた線状、又は帯状素材の表面に紫外線照射して表面層
のみ硬化させることにより、可撓性薄膜を形成する特許
請求の範囲第２項記載の強化プラスチック製ばね用素材
の製造方法。(4) Impregnating the reinforcing fiber bundle with a thermosetting resin that also has the property of curing when irradiated with ultraviolet rays, and curing only the surface layer by irradiating the surface of the linear or band-shaped material impregnated with the resin with ultraviolet rays. A method for manufacturing a reinforced plastic spring material according to claim 2, wherein a flexible thin film is formed by forming a flexible thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62132061A JPH0773888B2 (en) | 1987-05-28 | 1987-05-28 | Reinforced plastic spring material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62132061A JPH0773888B2 (en) | 1987-05-28 | 1987-05-28 | Reinforced plastic spring material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63295239A true JPS63295239A (en) | 1988-12-01 |
| JPH0773888B2 JPH0773888B2 (en) | 1995-08-09 |
Family
ID=15072596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62132061A Expired - Lifetime JPH0773888B2 (en) | 1987-05-28 | 1987-05-28 | Reinforced plastic spring material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773888B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06293079A (en) * | 1993-04-09 | 1994-10-21 | Ube Nitto Kasei Co Ltd | Production of profile rod-shaped article made of fiber reinforced resin |
| WO2014014481A1 (en) * | 2012-07-18 | 2014-01-23 | Mssc Us | Composite coil spring |
| JP2017520730A (en) * | 2014-06-11 | 2017-07-27 | ティッセンクルップ アクチェンゲゼルシャフト | Torsionally loaded bar components with various fiber reinforcements for tensile and compressive loads |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101489292B1 (en) * | 2014-10-20 | 2015-02-04 | 재단법인 중소조선연구원 | apparatus for manufacturing composite leaf spring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236250A (en) * | 1975-09-12 | 1977-03-19 | Sumitomo Electric Ind Ltd | Tempered plastic coil spring |
| JPS61195827A (en) * | 1985-02-25 | 1986-08-30 | Suriibondo:Kk | Molding method of fiber reinforced plastic spring |
-
1987
- 1987-05-28 JP JP62132061A patent/JPH0773888B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5236250A (en) * | 1975-09-12 | 1977-03-19 | Sumitomo Electric Ind Ltd | Tempered plastic coil spring |
| JPS61195827A (en) * | 1985-02-25 | 1986-08-30 | Suriibondo:Kk | Molding method of fiber reinforced plastic spring |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06293079A (en) * | 1993-04-09 | 1994-10-21 | Ube Nitto Kasei Co Ltd | Production of profile rod-shaped article made of fiber reinforced resin |
| WO2014014481A1 (en) * | 2012-07-18 | 2014-01-23 | Mssc Us | Composite coil spring |
| CN104583637A (en) * | 2012-07-18 | 2015-04-29 | Mssc有限公司 | Composite coil spring |
| JP2015526661A (en) * | 2012-07-18 | 2015-09-10 | エムエスエスシー インコーポレイテッド | Composite coil spring |
| US9677637B2 (en) | 2012-07-18 | 2017-06-13 | Mitsubishi Steel Mfg. Co., Ltd. | Composite coil spring |
| CN107255130A (en) * | 2012-07-18 | 2017-10-17 | 三菱制钢株式会社 | Compound disc spring |
| US9982734B2 (en) | 2012-07-18 | 2018-05-29 | Mitsubishi Steel Mfg. Co., Ltd. | Composite coil spring |
| EP3388708A1 (en) * | 2012-07-18 | 2018-10-17 | Mitsubishi Steel MFG. CO., LTD. | Composite coil spring |
| US10385940B2 (en) | 2012-07-18 | 2019-08-20 | Mssc Inc | Composite coil spring |
| CN107255130B (en) * | 2012-07-18 | 2019-09-20 | 三菱制钢株式会社 | Compound disc spring |
| JP2017520730A (en) * | 2014-06-11 | 2017-07-27 | ティッセンクルップ アクチェンゲゼルシャフト | Torsionally loaded bar components with various fiber reinforcements for tensile and compressive loads |
| US11078979B2 (en) | 2014-06-11 | 2021-08-03 | ThyssenKrupp Federn und Stabilisatoren GmbH | Torsion-loaded rod-shaped component with different fibre reinforcements for tensile and compressive loading |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0773888B2 (en) | 1995-08-09 |
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