JPS6146692B2 - - Google Patents
Info
- Publication number
- JPS6146692B2 JPS6146692B2 JP21580881A JP21580881A JPS6146692B2 JP S6146692 B2 JPS6146692 B2 JP S6146692B2 JP 21580881 A JP21580881 A JP 21580881A JP 21580881 A JP21580881 A JP 21580881A JP S6146692 B2 JPS6146692 B2 JP S6146692B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- leaf spring
- reinforced resin
- surface layers
- fibers
- 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
Links
- 239000002344 surface layer Substances 0.000 claims description 29
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 25
- 239000004917 carbon fiber Substances 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 10
- 239000012783 reinforcing fiber Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- -1 that is Substances 0.000 description 1
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
- F16F1/368—Leaf springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
【発明の詳細な説明】
本発明は、繊維強化樹脂製板ばねに係り、特に
板ばねの幅方向の表面層にも炭素繊維を配合して
ねじり剛性の増大を図つた繊維強化樹脂製板ばね
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber-reinforced resin leaf spring, and more particularly to a fiber-reinforced resin leaf spring in which carbon fiber is also added to the surface layer in the width direction of the leaf spring to increase torsional rigidity. Regarding.
従来提案されている繊維強化樹脂製板ばねにお
いては、該板ばねの板厚方向の表面層及び該表面
層に近い板厚方向の層のみ強度が特に大きくかつ
高価な強化繊維、即ち炭素繊維を配合していたに
過ぎず、板ばねの幅方向の左右の表面層には炭素
繊維が配列されて配合されるということはなかつ
た。このため該繊維強化樹脂製板ばねは、ねじり
剛性が小さく、未だ実用に供し得るのに十分な総
合的強度が得られていない。即ち、ねじり応力が
該板ばねに作用すると、その値は表面層で最も大
きくなり、該曲げ応力は板厚方向の上下の表面層
及び幅方向の左右の表面層で受けなければならな
いが、該幅方向の表面層に炭素繊維が配列されて
配合されていないため、該表面層において繊維強
化樹脂製板ばね全体のねじり剛性が低下してしま
つていたものである。 In conventionally proposed fiber-reinforced resin leaf springs, only the surface layer in the thickness direction of the leaf spring and the layer in the thickness direction near the surface layer are made of particularly strong and expensive reinforcing fibers, that is, carbon fibers. However, the carbon fibers were not arranged and blended in the left and right surface layers of the leaf spring in the width direction. For this reason, the fiber-reinforced resin leaf spring has low torsional rigidity and has not yet achieved sufficient overall strength for practical use. That is, when torsional stress acts on the leaf spring, the value is greatest in the surface layer, and the bending stress must be received by the upper and lower surface layers in the thickness direction and the left and right surface layers in the width direction. Since the carbon fibers are not arranged and blended in the surface layer in the width direction, the torsional rigidity of the entire fiber-reinforced resin leaf spring is reduced in the surface layer.
また単に板厚方向の炭素繊維の配合量を増して
もねじり剛性の増大には余り寄与できないにもか
かわらず、板ばねのコストが極めて高価になると
いう欠点があつた。 Furthermore, simply increasing the amount of carbon fiber blended in the plate thickness direction does not significantly contribute to increasing torsional rigidity, but has the disadvantage that the cost of the leaf spring becomes extremely high.
本発明は、上記した従来技術の欠点を除くため
になされたものであつて、その目的とするところ
は、炭素繊維、ガラス繊維等の強化繊維を用いて
強化した繊維強化樹脂製板ばねにおいて、板厚方
向の上下の表面層に加えて、幅方向の左右の表面
層にも炭素繊維を配列して配合することによつて
繊維強化樹脂製板ばねのねじり剛性を増大させる
ことである。また他の目的は、高価な炭素繊維の
配合量を多くしないで効率的にねじり剛性を増大
させ、繊維強化樹脂製板ばねのコストの低減を図
ることである。 The present invention has been made to eliminate the drawbacks of the prior art described above, and its purpose is to provide a fiber-reinforced resin leaf spring reinforced with reinforcing fibers such as carbon fibers and glass fibers. The purpose is to increase the torsional rigidity of a fiber-reinforced resin leaf spring by arranging and blending carbon fibers in the left and right surface layers in the width direction in addition to the upper and lower surface layers in the thickness direction. Another object of the present invention is to efficiently increase torsional rigidity without increasing the amount of expensive carbon fibers, and to reduce the cost of a fiber-reinforced resin leaf spring.
要するに本発明は、炭素繊維、ガラス繊維等の
強化繊維を用いて強化した繊維強化樹脂製板ばね
において、該板ばねの板厚方向の上下の表面層に
炭素繊維を配合すると共に該板ばねの幅方向の左
右の表面層にも該炭素繊維を配合したことを特徴
とするものである。 In short, the present invention provides a fiber-reinforced resin leaf spring reinforced with reinforcing fibers such as carbon fibers and glass fibers, in which carbon fiber is blended into the upper and lower surface layers in the thickness direction of the leaf spring. It is characterized in that the carbon fibers are also blended into the left and right surface layers in the width direction.
以下本発明を図面に示す実施例に基いて説明す
る。繊維強化樹脂製板ばね１は、炭素繊維Ｃ、ガ
ラス繊維Ｇ等の強化繊維Ｆを用いて強化したもの
であり、しかも該繊維強化樹脂製板ばねの板厚方
向の上下の表面層１ａ，１ｂに炭素繊維Ｃを配合
すると共に該繊維強化樹脂製板ばねの幅方向の左
右の表面層１ｃ，１ｄにも炭素繊維Ｃを繊維強化
樹脂製板ばね１の長手方向に引き揃えかつ配列し
て配合してある。炭素繊維Ｃは長繊維を用い、表
面層１ａ，１ｂ，１ｃ及び１ｄにおける引張強度
の増大を図つている。 The present invention will be explained below based on embodiments shown in the drawings. The fiber-reinforced resin leaf spring 1 is reinforced using reinforcing fibers F such as carbon fibers C and glass fibers G, and has upper and lower surface layers 1a and 1b in the thickness direction of the fiber-reinforced resin leaf spring. In addition, carbon fibers C are blended into the left and right surface layers 1c and 1d in the width direction of the fiber-reinforced resin leaf spring 1 by aligning and arranging them in the longitudinal direction of the fiber-reinforced resin leaf spring 1. It has been done. The carbon fiber C uses long fibers to increase the tensile strength in the surface layers 1a, 1b, 1c, and 1d.
これらの表面層１ａ，１ｂ，１ｃ及び１ｄを除
く中心層１ｅにはガラス繊維Ｇが配合される。ガ
ラス繊維Ｇは、第３図に示すような長繊維G1を
繊維強化樹脂製板ばね１の長手方向に引き揃えた
ものでもよく、第４図に示すような短繊維G2を
方向性なくランダムに配合したものでもよく、ま
た第５図に示すようなクロスG3にしたものでも
よく、更にはこれらを混合して積層したものでも
よい。 Glass fiber G is blended into the center layer 1e excluding these surface layers 1a, 1b, 1c and 1d. The glass fiber G may be one in which long fibers G 1 as shown in FIG. They may be mixed randomly, they may be made into a cross G3 as shown in FIG. 5, or they may be mixed and laminated.
本発明は、上記のように構成されており、以下
その作用について説明する。繊維強化樹脂製板ば
ね１にねじり荷重が作用した場合には、上下の表
面層１ａ，１ｂだけでなく、左右の表面層１ｃ，
１ｄにも大きなねじり応力が発生するが、本発明
の繊維強化樹脂製板ばね１においては、左右の表
面層１ｃ，１ｄにも炭素繊維Ｃが配合されている
ため、十分なねじり強度を発揮する。また表面層
１ａ，１ｂにおける炭素繊維Ｃの配合量を増加し
てねじり強度を増大させる場合に比べて、炭素繊
維Ｃの使用量は少なくて済み、中心層１ｅはガラ
ス繊維Ｇのみで構成してもよいため、安価に製作
することができる。 The present invention is configured as described above, and its operation will be explained below. When a torsional load is applied to the fiber-reinforced resin leaf spring 1, not only the upper and lower surface layers 1a and 1b but also the left and right surface layers 1c,
1d also generates a large torsional stress, but in the fiber-reinforced resin leaf spring 1 of the present invention, carbon fiber C is also blended in the left and right surface layers 1c and 1d, so that sufficient torsional strength is exhibited. . Furthermore, compared to increasing the torsional strength by increasing the blending amount of carbon fiber C in the surface layers 1a and 1b, the amount of carbon fiber C used can be reduced, and the center layer 1e can be composed only of glass fiber G. It can be produced at low cost because of its high quality.
本発明は、上記のように構成され、作用するも
のであるから、炭素繊維、ガラス繊維等の強化繊
維を用いて強化した繊維強化樹脂製板ばねにおい
て、板厚方向の上下の表面層に加えて、幅方向の
左右の表面層にも炭素繊維を配列して配合したの
で繊維強化樹脂製板ばねのねじり剛性を増大させ
ることができる効果が得られる。また高価な炭素
繊維の配合量を多くしないで効率的にねじり剛性
を増大させることができるので、繊維強化樹脂製
板ばねのコストの低減を図ることができる効果が
得られる。 Since the present invention is constructed and operates as described above, in a fiber-reinforced resin leaf spring reinforced using reinforcing fibers such as carbon fibers and glass fibers, in addition to the upper and lower surface layers in the thickness direction, In addition, since carbon fibers are arranged and blended in the left and right surface layers in the width direction, the torsional rigidity of the fiber-reinforced resin leaf spring can be increased. Furthermore, since the torsional rigidity can be efficiently increased without increasing the amount of expensive carbon fiber, the cost of the fiber-reinforced resin leaf spring can be reduced.
図面は本発明の実施例に係り、第１図は一部を
破断して示す繊維強化樹脂製板ばねの斜視図、第
２図は中心層を除いた表面層のみを模型的に示す
繊維強化樹脂製板ばねの部分斜視図、第３図、第
４図及び第５図はガラス繊維の各実施例を示す部
分斜視図、第６図は繊維強化樹脂製板ばねの模型
的な縦断面図である。
１は繊維強化樹脂製板ばね、１ａ，１ｂは夫々
上下の表面層、１ｃ，１ｄは夫々幅方向の左右の
表面層、Ｃは炭素繊維、Ｆは強化繊維、Ｇはガラ
ス繊維である。
The drawings relate to embodiments of the present invention, and FIG. 1 is a partially cutaway perspective view of a fiber-reinforced resin leaf spring, and FIG. 2 is a fiber-reinforced leaf spring schematically showing only the surface layer excluding the center layer. A partial perspective view of a resin leaf spring; FIGS. 3, 4, and 5 are partial perspective views showing each example of glass fiber; FIG. 6 is a schematic vertical cross-sectional view of a fiber-reinforced resin leaf spring. It is. 1 is a leaf spring made of fiber-reinforced resin, 1a and 1b are upper and lower surface layers, 1c and 1d are left and right surface layers in the width direction, C is carbon fiber, F is reinforcing fiber, and G is glass fiber.
Claims (1)
強化した繊維強化樹脂製板ばねにおいて、該板ば
ねの板厚方向の上下の表面層に炭素繊維を配合す
ると共に該板ばねの幅方向の左右の表面層にも該
炭素繊維を配合したことを特徴とする繊維強化樹
脂製板ばね。1. In a fiber-reinforced resin leaf spring reinforced with reinforcing fibers such as carbon fibers and glass fibers, carbon fiber is blended into the upper and lower surface layers of the leaf spring in the thickness direction, and at the same time, carbon fiber is added to the upper and lower surface layers of the leaf spring in the width direction. A leaf spring made of fiber-reinforced resin, characterized in that the carbon fiber is also blended into the surface layer of the leaf spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21580881A JPS58118342A (en) | 1981-12-28 | 1981-12-28 | Leaf spring made of fiber reinforced resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21580881A JPS58118342A (en) | 1981-12-28 | 1981-12-28 | Leaf spring made of fiber reinforced resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58118342A JPS58118342A (en) | 1983-07-14 |
| JPS6146692B2 true JPS6146692B2 (en) | 1986-10-15 |
Family
ID=16678595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21580881A Granted JPS58118342A (en) | 1981-12-28 | 1981-12-28 | Leaf spring made of fiber reinforced resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58118342A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073142A (en) * | 1983-09-08 | 1985-04-25 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | Single type leaf spring for automobile |
| US6811169B2 (en) | 2001-04-23 | 2004-11-02 | Daimlerchrysler Corporation | Composite spring design that also performs the lower control arm function for a conventional or active suspension system |
| EP2757016B1 (en) * | 2011-09-15 | 2020-01-01 | GH Craft Ltd. | Railcar bogie plate spring |
| JP5878791B2 (en) * | 2012-02-29 | 2016-03-08 | 川崎重工業株式会社 | Leaf spring unit and bogie for railway vehicles using the same |
| DE102019109554A1 (en) * | 2019-04-11 | 2020-10-15 | Danto Invention Gmbh & Co. Kg | Spiral spring element made from a fiber plastic composite material |
-
1981
- 1981-12-28 JP JP21580881A patent/JPS58118342A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58118342A (en) | 1983-07-14 |
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