JPS58131441A - Fiber-reinforced plastic plate spring - Google Patents

Abstract

PURPOSE:To aim at improvement in compressive strength, by interposing a series of soft layers such as a cloth layer and a mat layer consisting of a reinforced fiber being smaller in the modulus of elasticity than a carbon fiber between a unidirection layer and the said cloth layer for lamination. CONSTITUTION:A unidirection layer C1 of a carbon fiber C is layered on a surface layer 11a of a fiber-reinforced plastic plate spring 11, a cloth layer C2 of the carbon fiber C on an intermediate 11b, and a unidirection layer G2 of a glass fiber G on a center layer 11C respectively; in addition, soft layers S such as the cloth layer, a mat layer and the like consisting of a reinforced fiber F being smaller in the modulus of elasticity than the carbon fiber C are interposingly layered between layers C1 and C2 as well. When this fiber-reinforced plastic plate spring 11 is clamped with a U-bolt by way of example, compressive load acts on the layer C1 but said layers S exist beneath whereby the carbon fiber C of the surface layer 11a eats its way into the soft layer S, making it into an undulated form with which side slipping therefore does not happen at all, so that not only a breakdown of the layer C1 is obviated but also compressive strength is thus improved.

Description

【発明の詳細な説明】 本発明は、繊維強化棚側製板ばねに係シ、特にＵホルト
による締付力に対抗し得る圧縮強直を備え九教維強化棚
側製板ばねに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber-reinforced shelf-side leaf spring, and more particularly to a nine-fiber-reinforced shelf-side leaf spring having compression stiffness capable of resisting the tightening force of a U-holt.

従来、繊維強化棚側線板はねｌ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１ａＫ＊素１１１ｍＣの
ユニデ゛イレクシ曹ンＮｌＩＣ一方向繊維強化層）Ｃい
中間層１ｂ６ｃ嶽素繊緑Ｃのクロス層（クロス材繊維強
化層）Ｃ１、中心層１ｃにカラス繊維Ｇのユニディレ２
７１７層Ｇ、を積層形成したものが一般的である。Conventionally, various proposals have been made for fiber-reinforced shelf side wire springs l as an alternative to steel leaf springs, but as shown in Figure 1, the cross section of the fiber-reinforced shelf side wire plate spring l is a uniform type with a surface layer of 1aK*element 111mC.゛Ilexi carbon NlIC unidirectional fiber reinforced layer) C middle layer 1b6c cloth layer (cross material fiber reinforced layer) C1 made of white fiber green C, central layer 1c made of glass fiber G unidirectional 2
Generally, 717 layers G are laminated.

しかし骸従来例によると、繊維強化棚側製板はね１の長
手方向の中央部を、例え＃ｉｕ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
があっ九。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って炭素繊ｌａＣのユニディレクシ
璽ンＮｌＩＣ１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Ｃ８に積層された炭素ｌｌｌ５Ｃ
のユニティレクシ１ン層Ｃ０に矢印人で示すような圧縮
荷重をかけると、炭素繊維Ｃのクロス層Ｃ８の弾性率が
非常に大きく、また硬いので、ユニディレクシ曹ン層Ｃ
Ｉの炭嵩繊１ＩＩＩｉＣは矢印Ｂで示すようにクロス層
Ｃ８に対して渭如を止じて匈方に押し出されてしまうと
いうことがわかっ九。この結果ユニディレクシ曹ン層Ｃ
Ｉ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 Mukuro's conventional example, if the longitudinal center of the fiber-reinforced shelf-side board 1 is tightened with #iu bolts,
The disadvantage is that it lacks compressive strength and cannot be tightened sufficiently. When the cause of this was investigated, it was found that the unidirection seal NlIC1 of carbon fiber laC was destroyed by a mechanism as shown in FIG. That is, the carbon lll5C laminated on the cross layer C8 of carbon fiber C
When a compressive load as shown by the arrow is applied to the Unity Rex layer C0, the elastic modulus of the cross layer C8 of the carbon fiber C is very large and hard, so
It was found that the coal bulk fibers 1IIIiC of I stopped moving against the cross layer C8 and were pushed out in the direction as shown by arrow B. As a result, Unidirection layer C
This had the disadvantage that the I was destroyed.

本発明は、上記した従来技術の欠点を除くためになされ
たものであって、その目的とするとと呂は、縦木に維の
ユニティレクシ讐ン層と、炭素繊維のクロス層とを含む
繊維強化樹脂製板はねにおいて、これらの鳩の間によシ
柔軟な軟質層を介在させて積層することによってＵボル
トによる締付は等による圧―荷重が作用した場合のユニ
ティレクン１７層の横滑９現象を防止することであり、
またこれによって繊維強化樹脂製板ばねの圧縮強直の向
上を図ることでおる。The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and its purpose is to provide a fiber-reinforced fiber-reinforced structure comprising a unitary lexical layer of fibers and a cross layer of carbon fibers on the vertical wood. By interposing a very flexible soft layer between these resin plates and laminating them, the tightening with U-bolts can prevent side slipping of the Unity Lecun 17 layer when a load is applied. It is to prevent the phenomenon,
This also improves the compression stiffness of the fiber-reinforced resin leaf spring.

賛するに本発明は、炭素繊維のユニティレクシ謬ン層と
、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、前記炭素繊維よシも弾性率の小さい強化緻細よ
シなるクロス層、マット層勢の軟質層を前記炭１ｇ線維
のユニティレクシ璽ン層とクロス層との間に介在させて
積層したことを％部とするものである。Advantageously, the present invention provides a fiber-reinforced resin leaf spring including a unitary flexible layer of carbon fibers and a cross layer of carbon fibers, the reinforced fine cloth layer having a lower elastic modulus than the carbon fibers. , a soft layer in the form of a matte layer is interposed between the Unity Lexi layer and the cloth layer of the 1g charcoal fiber 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。凧３
図において炭素繊維Ｃのユニティレクシ謬ンｗＩｃ、が
繊維強化樹脂製板ばね１１の表面層１１Ｍに、炭素繊維
Ｃのクロス層Ｃ２が中間階１１ｂに、そしてガラスｅｍ
ｕのユニティレクシ璽ン層Ｇｌが中心層１１ＣＫｆ＊層
されている点は、第１−に示す従来例と岡じである。The present invention will be explained below based on embodiments shown in the drawings. kite 3
In the figure, a unity flexure wIc of carbon fiber C is applied to the surface layer 11M of the fiber-reinforced resin leaf spring 11, a cross layer C2 of carbon fiber C is applied to the intermediate floor 11b, and a glass em
This is the same as the conventional example shown in No. 1- in that the unity lexicon layer Gl of u is layered in the central layer 11CKf*.

本発明では、これに加えて炭素繊維Ｃよりも弾性率の小
さい強化ｍｍＦよ如なるクロス層、マット層等の軟質層
Ｓを炭素繊維Ｃのユニディレ２フ１フ層Ｃ１と、クロス
層Ｃ８との間に介在させて積層したものである。軟５に
鳩Ｓ祉、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 cross layer or a mat layer made of reinforced mmF having a lower elastic modulus than that of the carbon fiber C is added to the unidire 2F 1F layer C1 of the carbon fiber C, and the cloth layer C8. This is a layered structure that is interposed between the two layers. It can be composed of soft 5 and fiberglass cloth, for example, glass fiber 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。謝４図において、緻＃ｉ強化ｔ／＃
脂振仮はねｌを例えはＵポルトで締め付けると、矢印Ａ
で示すような圧縮Ｉｆ１重が炭素繊維Ｃのユニ１４２２
７１１７層Ｃ３に作用するが、本発明の構成によると、
ユニディレ２フ１フ層Ｃ８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った形状となる。このため
、従来例に見られたように炭素繊維Ｃが横滑シを生ずる
ことがなくなり、この結果、ユニティレクシ冒ン層Ｃ。The present invention is configured as described above, and its operation will be explained below. In Figure 4, the density #i reinforcement t/#
For example, if you tighten the lubricant with a U port, arrow A
Compression If 1 weight as shown in uni 1422 of carbon fiber C
7117 acts on layer C3, but according to the configuration of the present invention,
Since the soft layer S exists under the UNIDIRE 2F 1F layer C8, the carbon fibers C of the surface layer 11a bite into the soft layer,
The soft layer has a wavy shape as shown. For this reason, the carbon fiber C does not cause horizontal slippage as seen in the conventional example, and as a result, the Unity Lexus layer C.

がｆｉ１廉されるということが防止でき、繊維強化樹脂
製板ばね１１の圧縮強直が向上する。This prevents the fiber-reinforced resin leaf spring 11 from becoming stiffer in compression.

本発明は、上記のようにｌｌＢ成され、作用するもので
あるから、炭素繊維のユニディレ２２１フ層と、縦嵩鎗
雑のクロス層とを含む繊維強化樹脂製板はねにおいて、
これらの層の間によシ柔軟な軟３１［Ｎを介在させて積
層したので、Ｕホルトによる締付は勢による圧ＪＩＩｌ
ｌｉｈ重が作用した場合のユニディレ２２１フ層の横滑
ｂｓ象を防止することができ、この舶来繊維強化樹脂製
板はねの圧細強ｋが向上する効果が得られる。Since the present invention is constructed and operates as described above, in a fiber-reinforced resin board comprising a carbon fiber unidirectional 221 layer and a vertically bulky cross layer,
Since these layers are laminated with a very flexible soft 31N interposed between them, the tightening with the U-holt can be done without pressure due to force.
It is possible to prevent the side-slipping phenomenon of the UNIDILE 221 floor layer when a heavy load is applied, and it is possible to obtain the effect of improving the compaction strength k of this foreign fiber-reinforced resin plate spring.

【図面の簡単な説明】[Brief explanation of drawings]

絽ｌ−龜征米例に係る繊維強化樹脂製板はねの長平方向
に直角な断面の縦断面図、第２図は謝１図に示す繊維強
化樹脂製板ばねが圧縮荷１によって破磯する機構を示す
ｗ！に量的説明図、巣３−及び絡４図は本発明の実施例
に係シ、累３図は繊維強化樹脂線板はねの絽１図と同様
な縦断面図、第４図は第３図に示す鰍ｍ強化樹脂製板は
ねが圧細荷東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はね、Ｃは炭素Ｉｌｋ維、ＣＩ
ハユニティレクシ謬ン層、Ｃ１はクロス層、Ｆは弾性率
の小さい強化ＩＩＩ維、Ｓは軟質層である。 特許出願人　　日野自動単工業株式会社代塩入　弁埴土
　　円　出　和　み ａｔ図 第２図 第３図 第４図Figure 2 is a vertical cross-sectional view of a cross section perpendicular to the long plane direction of the fiber-reinforced resin plate spring according to the example of 絽 1 - 霜I'll show you the mechanism that does it lol! Figure 3 is a quantitative explanatory diagram, Figures 3 and 4 are related to embodiments of the present invention, Figure 3 is a longitudinal cross-sectional view similar to Figure 1 of the fiber-reinforced resin wire plate spring, and Figure 4 is a longitudinal cross-sectional view similar to Figure 1. FIG. 4 is a schematic explanatory diagram showing a state in which the elongated reinforcing resin plate shown in FIG. 3 receives a compressed load. 11 is a fiber-reinforced resin board, C is carbon Ilk fiber, CI
C1 is a cross layer, F is a reinforced III fiber with a small elastic modulus, and S is a soft layer. Patent Applicant: Hino Automatic Industry Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 炭素繊維のユニティレクシ謬ン層と、炭素繊維のクロス
層とを含む緻細強化！＃脂振板はねにおいて、前記炭素
繊維よシも弾性率の小さい強化繊維よりなるクロス層、
マット層勢の軟質層を前記炭素ＩＩＲ−のユニディレ２
７１７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ｍ１３１化樹製＆はね。Fine reinforcement including a carbon fiber unity layer and a carbon fiber cross layer! # In the greasy plate spring, a cross layer made of reinforcing fibers with a small elastic modulus as well as the carbon fibers,
The soft layer of the matte layer is coated with the carbon IIR-Unidire 2.
717 layer and a cloth layer are interposed and laminated.