JPS6147342B2 - - Google Patents
Info
- Publication number
- JPS6147342B2 JPS6147342B2 JP1415782A JP1415782A JPS6147342B2 JP S6147342 B2 JPS6147342 B2 JP S6147342B2 JP 1415782 A JP1415782 A JP 1415782A JP 1415782 A JP1415782 A JP 1415782A JP S6147342 B2 JPS6147342 B2 JP S6147342B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- fiber
- unidirectional
- leaf spring
- reinforced resin
- 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
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 27
- 239000004917 carbon fiber Substances 0.000 claims description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 55
- 239000000835 fiber Substances 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel 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
Ｕボルトによる締付力に対抗し得る圧縮強度を備
え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 having a compressive strength capable of resisting the tightening force of a U-bolt.
従来、繊維強化樹脂製板ばね１は、鋼製の板ば
ねに代わるものとして種々の提案がなされている
が、その断面は、第１図に示すように、表面層１
ａに炭素繊維Ｃのユニデイレクシヨン層（一方向
繊維強化層）C1、中間層１ｂに炭素繊維Ｃのク
ロス層（クロス材繊維強化層）C2、中心層１ｃ
にガラス繊維Ｇのユニデイレクシヨン層G1を積
層形成したものが一般的である。 Conventionally, various proposals have been made for the fiber-reinforced resin leaf spring 1 as an alternative to the steel leaf spring, but the cross section of the leaf spring 1 is as shown in FIG.
a has a unidirectional layer of carbon fiber C (unidirectional fiber reinforced layer) C 1 , an intermediate layer 1b has a cross layer of carbon fiber C (cross material fiber reinforced layer) C 2 , a central layer 1c
Generally, a unidirectional layer G1 of glass fiber G is laminated on top of the glass fiber G.
しかし該従来例によると、繊維強化樹脂製板ば
ね１の長手方向の中央部を、例えばＵボルトで締
め付けると、圧縮強度が不足して十分な締付けが
できないという欠点があつた。そこでその原因を
究明したところ、第２図に示すような機構によつ
て炭素繊維Ｃのユニデイレクシヨン層C1が破壊
するに至ることが判明した。即ち炭素繊維Ｃのク
ロス層C2に積層された炭素繊維Ｃのユニデイレ
クシヨン層C1に矢印Ａで示すような圧縮荷重を
かけると、炭素繊維Ｃのクロス層C2の弾性率が
非常に大きく、また硬いので、ユニデイレクシヨ
ン層C1の炭素繊維Ｃは矢印Ｂで示すようにクロ
ス層C2に対して滑りを生じて側方に押し出され
てしまうということがわかつた。この結果ユニデ
イレクシヨン層C1が破壊されてしまうという欠
点が生じていたものである。 However, according to the conventional example, if the longitudinal center portion of the fiber-reinforced resin leaf spring 1 is tightened with, for example, a U bolt, the compressive strength is insufficient and sufficient tightening cannot be achieved. When the cause of this was investigated, it was found that the unidirectional layer C1 of the carbon fiber C was destroyed by a mechanism as shown in FIG. That is, when a compressive load as shown by arrow A is applied to the unidirectional layer C1 of carbon fiber C laminated on the cross layer C2 of carbon fiber C, the elastic modulus of the cross layer C2 of carbon fiber C becomes extremely large. It has been found that because the carbon fibers C of the unidirectional layer C 1 are large and hard, they slip on the cross layer C 2 as shown by arrow B and are pushed out to the side. As a result, the unidirectional layer C1 was destroyed, which was a drawback.
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、炭素繊維のユニデイレクシヨン層と、炭素繊
維のクロス層とを含む繊維強化樹脂製板ばねにお
いて、これらの層の間により柔軟な軟質層を介在
させて積層することによつてＵボルトによる締付
け等による圧縮荷重が作用した場合のユニデイレ
クシヨン層の横滑り現象を防止することであり、
またこれによつて繊維強化樹脂製板ばねの圧縮強
度の向上を図ることである。 The present invention has been made in order to eliminate the drawbacks of the prior art described above, and its purpose is to provide a fiber-reinforced resin board containing a unidirectional layer of carbon fiber and a cross layer of carbon fiber. In a spring, by interposing a softer layer between these layers and laminating them, it is possible to prevent the unidirectional layer from sliding sideways when a compressive load is applied due to tightening with a U bolt, etc.
This also aims to improve the compressive strength of the fiber-reinforced resin leaf spring.
要するに本発明は、炭素繊維のユニデイレクシ
ヨン層と、炭素繊維のクロス層とを含む繊維強化
樹脂製板ばねにおいて、前記炭素繊維よりも弾性
率の小さい強化繊維よりなるクロス層、マツト層
等の軟質層を前記炭素繊維のユニデイレクシヨン
層とクロス層との間に介在させて積層したことを
特徴とするものである。 In short, the present invention provides a fiber-reinforced resin leaf spring including a unidirectional layer of carbon fibers and a cross layer of carbon fibers, including a cross layer, a matte layer, etc. made of reinforcing fibers having a lower elastic modulus than the carbon fibers. It is characterized in that a soft layer is interposed between the carbon fiber unidirectional layer and the cloth layer and laminated thereon.
以下本発明を図面に示す実施例に基いて説明す
る。第３図において炭素繊維Ｃのユニデイレクシ
ヨン層C1が繊維強化樹脂製板ばね１１の表面層
１１ａに、炭素繊維Ｃのクロス層C2が中間層１
１ｂに、そしてガラス繊維Ｇのユニデイレクシヨ
ン層G1が中心層１１ｃに積層されている点は、
第１図に示す従来例と同じである。 The present invention will be explained below based on embodiments shown in the drawings. In FIG. 3, a unidirectional layer C1 of carbon fiber C is a surface layer 11a of a fiber reinforced resin leaf spring 11, and a cross layer C2 of carbon fiber C is a middle layer 1.
1b, and the unidirectional layer G1 of glass fiber G is laminated on the central layer 11c.
This is the same as the conventional example shown in FIG.
本発明では、これに加えて炭素繊維よりも弾性
率の小さい強化繊維Ｆよりなるクロス層、マツト
層等の軟質層Ｓを炭素繊維Ｃのユニデイレクシヨ
ン層C1と、クロス層C2との間に介在させて積層
したものである。軟質層Ｓは、例えばガラス繊維
Ｇをクロスとしたもので構成できる。 In addition to this, in the present invention, a soft layer S such as a cloth layer or a matte layer made of reinforcing fibers F having a lower elastic modulus than carbon fibers is combined with a unidirectional layer C 1 of carbon fibers C and a cloth layer C 2 . It is a layered structure with a layer interposed between the layers. The soft layer S can be made of, for example, a cloth made of glass fibers G.
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。第４図において、繊
維強化樹脂製板ばね１を例えばＵボルトで締め付
けると、矢印Ａで示すような圧縮荷重が炭素繊維
Ｃのユニデイレクシヨン層C1に作用するが、本
発明の構成によると、ユニデイレクシヨン層C1
の下に軟質層Ｓが存在するため、表面層１１ａの
炭素繊維Ｃが該軟質層に食い込み、該軟質層は図
示のように波打つた形状となる。このため、従来
例に見られたように炭素繊維Ｃが横滑りを生ずる
ことがなくなり、この結果、ユニデイレクシヨン
層C1が破壊されるということが防止でき、繊維
強化樹脂製板ばね１１の圧縮強度が向上する。 The present invention is configured as described above, and its operation will be explained below. In FIG. 4, when the fiber-reinforced resin leaf spring 1 is tightened with, for example, a U-bolt, a compressive load as shown by arrow A acts on the unidirectional layer C 1 of the carbon fiber C, but according to the configuration of the present invention, , unidirectional layer C 1
Since the soft layer S exists under the surface layer 11a, the carbon fibers C of the surface layer 11a bite into the soft layer, and the soft layer takes on a wavy shape as shown in the figure. Therefore, the carbon fibers C do not skid as seen in the conventional example, and as a result, it is possible to prevent the unidirectional layer C 1 from being destroyed, and the compression of the fiber-reinforced resin leaf spring 11 is prevented. Strength is improved.
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、炭素繊維のユニデイレクシヨン層
と、炭素繊維のクロス層とを含む繊維強化樹脂製
板ばねにおいて、これらの層の間により柔軟な軟
質層を介在させて積層したので、Ｕボルトによる
締付け等による圧縮荷重が作用した場合のユニデ
イレクシヨン層の横滑り現象を防止することがで
き、この結果繊維強化樹脂製板ばねの圧縮強度が
向上する効果が得られる。 Since the present invention is configured and operates as described above, in a fiber-reinforced resin leaf spring including a unidirectional layer of carbon fiber and a cross layer of carbon fiber, a more flexible layer is created between these layers. Since the layers are laminated with a soft layer interposed between them, it is possible to prevent the unidirectional layer from sliding sideways when a compressive load is applied due to tightening with a U-bolt, etc., and as a result, the compressive strength of the fiber reinforced resin leaf spring is increased. An improvement effect can be obtained.
第１図は従来例に係る繊維強化樹脂製板ばねの
長手方向に直角な断面の縦断面図、第２図は第１
図に示す繊維強化樹脂製板ばねが圧縮荷重によつ
て破壊する機構を示す模型的説明図、第３図及び
第４図は本発明の実施例に係り、第３図は繊維強
化樹脂製板ばねの第１図と同様な縦断面図、第４
図は第３図に示す繊維強化樹脂製板ばねが圧縮荷
重を受けた場合の状態を示す模型的説明図であ
る。
１１は繊維強化樹脂製板ばね、Ｃは炭素繊維、
C1はユニデイレクシヨン層、C2はクロス層、Ｆ
は弾性率の小さい強化繊維、Ｓは軟質層である。
Fig. 1 is a vertical sectional view of a cross section perpendicular to the longitudinal direction of a conventional fiber-reinforced resin leaf spring, and Fig.
A schematic explanatory view showing the mechanism in which the fiber-reinforced resin leaf spring shown in the figure breaks due to compressive load, FIGS. 3 and 4 relate to an embodiment of the present invention, and FIG. Longitudinal sectional view similar to FIG. 1 of the spring, No. 4
The figure is a schematic explanatory diagram showing the state when the fiber-reinforced resin plate spring shown in FIG. 3 is subjected to a compressive load. 11 is a fiber reinforced resin leaf spring, C is carbon fiber,
C 1 is unidirectional layer, C 2 is cross layer, F
is a reinforcing fiber with a small elastic modulus, and S is a soft layer.
Claims (1)
維のクロス層とを含む繊維強化樹脂製板ばねにお
いて、前記炭素繊維よりも弾性率の小さい強化繊
維よりなるクロス層、マツト層等の軟質層を前記
炭素繊維のユニデイレクシヨン層とクロス層との
間に介在させて積層したことを特徴とする繊維強
化樹製板ばね。1. In a fiber-reinforced resin leaf spring including a unidirectional layer of carbon fiber and a cross layer of carbon fiber, a soft layer such as a cloth layer or a mat layer made of reinforcing fibers having a lower elastic modulus than the carbon fiber is A fiber-reinforced wood leaf spring characterized by being laminated with carbon fibers interposed between a unidirectional layer and a cross layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1415782A JPS58131441A (en) | 1982-01-31 | 1982-01-31 | Fiber-reinforced plastic plate spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1415782A JPS58131441A (en) | 1982-01-31 | 1982-01-31 | Fiber-reinforced plastic plate spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58131441A JPS58131441A (en) | 1983-08-05 |
| JPS6147342B2 true JPS6147342B2 (en) | 1986-10-18 |
Family
ID=11853312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1415782A Granted JPS58131441A (en) | 1982-01-31 | 1982-01-31 | Fiber-reinforced plastic plate spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58131441A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4495549B2 (en) * | 2004-08-30 | 2010-07-07 | 本田技研工業株式会社 | Legged mobile robot |
| CN102667219A (en) * | 2009-10-26 | 2012-09-12 | 雷诺索尔公司 | Composite leaf spring |
| DE102015122621A1 (en) * | 2015-12-22 | 2017-06-22 | Karlsruher Institut für Technologie | Method for adjusting the elasticity of a material and workpiece produced by this method |
-
1982
- 1982-01-31 JP JP1415782A patent/JPS58131441A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58131441A (en) | 1983-08-05 |
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