JP3292351B2 - FRP cylinder - Google Patents
FRP cylinderInfo
- Publication number
- JP3292351B2 JP3292351B2 JP26635894A JP26635894A JP3292351B2 JP 3292351 B2 JP3292351 B2 JP 3292351B2 JP 26635894 A JP26635894 A JP 26635894A JP 26635894 A JP26635894 A JP 26635894A JP 3292351 B2 JP3292351 B2 JP 3292351B2
- Authority
- JP
- Japan
- Prior art keywords
- frp
- main body
- cylinder
- joint
- winding layer
- 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 - Lifetime
Links
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Vibration Dampers (AREA)
- Moulding By Coating Moulds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＦＲＰ（繊維強化プラ
スチック）製本体筒に他部材を圧入したＦＲＰ筒体に関
し、とくに、自動車のプロペラシャフト（駆動推進軸）
やロール状物等に用いて最適なＦＲＰ筒体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP (Fiber Reinforced Plastic) body having a main body made of FRP (Fiber Reinforced Plastic) and other members press-fitted thereto.
The present invention relates to an optimal FRP cylinder for use in rolls and rolls.
【０００２】[0002]
【従来の技術】最近、各種産業分野でＦＲＰ製の筒状体
が使われてきつつある。たとえば近年、省エネルギーの
観点から燃費の向上を目的とした自動車の軽量化が強く
望まれている。それを達成する一つの手段としてプロペ
ラシャフトのＦＲＰ化が検討され、一部で既に採用され
るに至っている。このようなＦＲＰ製プロペラシャフト
は、たとえば図１０に示すように構成されている。図１
０において、４１はＦＲＰ製本体筒を示しており、本体
筒４１の端部４２には、金属製継手４３が圧入接合され
ている。継手４３の接合面４４の外径は、ＦＲＰ製本体
筒４１の内周面４５の内径よりもやや大きく設定されて
おり、両者間にいわゆる圧入代が設けられている。金属
製継手４３が本体筒４１に圧入された状態では、継手４
３側には径方向の圧縮力に基づく圧縮応力が、本体筒４
１側には拡径力に基づく周方向の引張応力がそれぞれ作
用し、これら圧縮応力と引張応力とで、本体筒４１と継
手４３とが強固に接合されるようになっている。2. Description of the Related Art Recently, cylindrical bodies made of FRP have been used in various industrial fields. For example, in recent years, from the viewpoint of energy saving, it has been strongly desired to reduce the weight of automobiles for the purpose of improving fuel efficiency. As one means of achieving this, the use of FRP in a propeller shaft has been studied, and some of them have already been adopted. Such an FRP propeller shaft is configured, for example, as shown in FIG. FIG.
At 0, reference numeral 41 denotes an FRP main body tube, and a metal joint 43 is press-fitted to an end portion 42 of the main body tube 41. The outer diameter of the joint surface 44 of the joint 43 is set slightly larger than the inner diameter of the inner peripheral surface 45 of the FRP main body cylinder 41, and a so-called press-fit allowance is provided between the two. When the metal joint 43 is pressed into the main body cylinder 41, the joint 4
On the third side, a compressive stress based on a radial compressive force is applied.
A circumferential tensile stress based on the radial expansion force acts on one side, and the main body cylinder 41 and the joint 43 are firmly joined by the compressive stress and the tensile stress.
【０００３】ところで、自動車のプロペラシャフトは、
エンジンから発生する大きなトルクを伝達する必要があ
ることから、大きな捩り強度を必要とし、とくに継手４
３との接合部においては、本体筒４１の高い接合部強
度、捩り強度を必要とする。また、高速で回転され、あ
らゆる方向の振動が加わることから、高い曲げ強度や曲
げ弾性率等も必要とする。[0003] By the way, the propeller shaft of an automobile is
Since it is necessary to transmit a large torque generated from the engine, a large torsional strength is required.
In the joint portion 3, high joint portion strength and torsional strength of the main body cylinder 41 are required. In addition, since it is rotated at a high speed and vibrates in all directions, a high bending strength and a high bending elastic modulus are required.
【０００４】上記のような要求特性、とくに継手４３と
の接合部における本体筒４１の要求特性に関し、継手４
３との接合強度については、圧入接合構造により十分に
高い強度に確保可能であるものの、圧入接合された状態
における本体筒４１自身の強度については、未だ改良の
余地があった。With respect to the above-mentioned required characteristics, particularly the required characteristics of the main body cylinder 41 at the joint with the joint 43, the joint 4
Although a sufficiently high strength can be ensured by the press-fitting joint structure, the strength of the main body tube 41 itself in the press-fitted state still has room for improvement.
【０００５】[0005]
【発明が解決しようとする課題】すなわち、上記のよう
な圧入状態では、ＦＲＰ製本体筒４１の端部４２には、
常時周方向の引張応力が作用しているが、とくに内周縁
４６は形状的に角張っているので、この内周縁４６に応
力が集中しやすい。応力が集中すると、その部分が局部
的に弱くなるおそれがある。とくに応力集中部位にＦＲ
Ｐ層の層間が存在すると、層間剥離の起点となりやす
く、強度的に問題を生じるおそれがある。That is, in the above-described press-fit state, the end portion 42 of the FRP main body tube 41 is
Although tensile stress always acts in the circumferential direction, the inner peripheral edge 46 is particularly angular in shape, so that stress tends to concentrate on the inner peripheral edge 46. When the stress is concentrated, the portion may be locally weakened. FR especially at stress concentration parts
If there is an interlayer of the P layer, it is likely to be a starting point of delamination, which may cause a problem in strength.
【０００６】本発明は、上記のような問題点に着目し、
とくに、ＦＲＰ製本体筒の他部材との圧入接合部の強度
を向上することを目的とする。[0006] The present invention focuses on the above problems,
In particular, an object of the present invention is to improve the strength of a press-fit joint portion between the FRP main body cylinder and another member.
【０００７】[0007]
【課題を解決するための手段】この目的に沿う本発明の
ＦＲＰ筒体は、ＦＲＰ製本体筒の端部内側に他部材を圧
入接合したＦＲＰ筒体において、前記本体筒は、複数の
ＦＲＰ層の積層構造を有し、該本体筒の端部内周縁に面
取り又はＲ加工を施すとともに、該面取り又はＲ加工の
本体筒外端面における開始位置が、ＦＲＰ層間位置を外
れたいずれか一つのＦＲＰ層の層内に位置していること
を特徴とするものからなる。According to a first aspect of the present invention, there is provided an FRP cylindrical body in which another member is press-fitted to the inside of an end of an FRP main body cylinder.
It has a laminate structure of FRP layers, with facilities to the chamfering or R processing to an end inner peripheral edge of the main body tube, chamfering or R processing
The start position on the outer end face of the main body cylinder is outside the FRP interlayer position.
Characterized in that it is located in any one of the FRP layers .
【０００８】また、本発明に係るＦＲＰ筒体は、ＦＲＰ
製本体筒の端部内側に他部材を圧入接合したＦＲＰ筒体
において、前記本体筒の端面の内周縁に対向する前記他
部材の外周面に環状の凹部を形成したことを特徴とする
ものからなる。Further, the FRP cylinder according to the present invention comprises
In an FRP cylinder body in which another member is press-fitted and joined to the inside of the end of the main body cylinder, an annular concave portion is formed on the outer peripheral surface of the other member facing the inner peripheral edge of the end surface of the main body cylinder. Become.
【０００９】このようなＦＲＰ筒体においては、上記本
体筒は、 ａ．前記本体筒の全長にわたって設けた、本体筒の軸方
向に対して強化繊維が±５〜±３０°の角度で配列され
たヘリカル巻層と、 ｂ．前記ヘリカル巻層の内側で、かつ、本体筒の端部に
設けた、強化繊維のフープ巻層と、を有していることが
好ましい。In such an FRP cylinder, the main body cylinder includes: a. A helical winding layer provided over the entire length of the main body cylinder, in which reinforcing fibers are arranged at an angle of ± 5 to ± 30 ° with respect to the axial direction of the main body cylinder; b. It is preferable to have a hoop winding layer of a reinforcing fiber provided inside the helical winding layer and at the end of the main body cylinder.
【００１０】上記のようなＦＲＰ筒体においては、ＦＲ
Ｐ製本体筒にたとえば金属製の他部材が圧入接合された
状態では該他部材からＦＲＰ製本体筒の端部に対して拡
径方向への応力が常時作用しており、前述の如く、形状
的に本体筒内周縁に応力が集中しやすい。この本体筒内
周縁に面取りまたはＲ加工を施すことによって、あるい
は、該内周縁に対向する他部材側に、該内周縁と実質的
に非接触の状態で環状に延びる凹部を設けることによっ
て、本体筒内周縁部位では本体筒と他部材とが径方向に
おいて非接触状態となり、局部的にみれば圧入に伴う荷
重が直ちに伝達されなくなって、内周縁における応力集
中が大幅に緩和される。したがって、応力集中に起因す
るＦＲＰ製本体筒の強度低下が抑制され、かつ応力集中
に起因して生じるおそれのある層間剥離等も確実に防止
される。[0010] In the above-described FRP cylinder, FR
In the state where, for example, another metal member is press-fitted and joined to the P main body cylinder, a stress in the radially expanding direction always acts on the end of the FRP main body cylinder from the other member, and as described above, The stress tends to concentrate on the inner peripheral edge of the main body cylinder. By chamfering or rounding the inner peripheral edge of the main body cylinder, or by providing a concave portion extending annularly in a substantially non-contact state with the inner peripheral edge on the other member side facing the inner peripheral edge, At the inner peripheral portion of the cylinder, the main body cylinder and other members are in a non-contact state in the radial direction, and when viewed locally, the load caused by the press-fitting is not immediately transmitted, and the stress concentration at the inner peripheral edge is greatly reduced. Accordingly, a decrease in the strength of the FRP main body cylinder due to stress concentration is suppressed, and delamination or the like which may occur due to stress concentration is reliably prevented.
【００１１】このようなＦＲＰ筒体はプロペラシャフト
に代表されるものであり、プロペラシャフトの端部接合
部の強度を向上することにより、プロペラシャフトのこ
の部位に要求される基本的性能を満足させつつ、この部
位、ひいてはＦＲＰ製プロペラシャフト全体としての強
度向上をはかることができる。[0011] Such an FRP cylinder is represented by a propeller shaft, and by improving the strength of the end joint portion of the propeller shaft, the basic performance required for this portion of the propeller shaft is satisfied. Meanwhile, it is possible to improve the strength of this portion, and eventually the FRP propeller shaft as a whole.
【００１２】そして、プロペラシャフトに前記のような
ヘリカル巻層とフープ巻層とを有する構成を採用するこ
とにより、プロペラシャフトに所望の圧縮破壊を円滑に
生じさせたい場合、たとえば衝突時等にクラッシャブル
な構造のボディの破壊に伴ってプロペラシャフトも円滑
に圧縮破壊させたい場合、継手からフープ巻層に圧縮荷
重を伝達させ、フープ巻層とヘリカル巻層との間の特定
の層間に剥離を生じさせ、フープ巻層がそれ自身は実質
的に破壊せずに筒軸方向に継手とともに移動しながらヘ
リカル巻層を破壊していくようにすることにより、本体
筒に所望の円滑な圧縮破壊を生じさせることが可能とな
る。When the propeller shaft has the above-described structure having the helical winding layer and the hoop winding layer, a desired compression failure can be smoothly generated on the propeller shaft. When the propeller shaft is to be smoothly compressed and destroyed due to the destruction of the body with a flexible structure, the compressive load is transmitted from the joint to the hoop winding, and peeling occurs between the specific layers between the hoop winding and the helical winding. By causing the hoop winding to break the helical winding while moving with the joint in the direction of the cylinder axis without substantially destroying the hoop winding itself, the desired smooth compressive fracture can be applied to the main body cylinder. Can be created.
【００１３】このフープ巻層の外端面内周縁に、たとえ
ば前記面取り又はＲ加工が施されることにより、継手圧
入状態における応力集中が緩和され、接合部の強度が確
保される。また、フープ巻層が継手とともに本体筒内を
筒軸方向に移動していき、ヘリカル巻層を破壊していく
際にも、フープ巻層への応力集中を緩和できるので、上
記圧縮破壊進行中におけるフープ巻層の不都合な破壊が
回避される。By subjecting the inner peripheral edge of the outer end face of the hoop winding layer, for example, to the above-mentioned chamfering or rounding, stress concentration in the joint press-fit state is reduced, and the strength of the joint is ensured. In addition, when the hoop winding layer moves in the cylinder axis direction together with the joint in the body axis direction and breaks the helical winding layer, stress concentration on the hoop winding layer can be reduced. The undesired destruction of the hoop winding layer at the point is avoided.
【００１４】さらに、前記面取り又はＲ加工の本体筒外
端面における開始位置を、本体筒を構成する複数のＦＲ
Ｐ層のうちのいずれかの層の層中に位置させることによ
り、面取り又はＲ加工の開始部が層間剥離の起点となる
ことを防止できる。したがって、面取り又はＲ加工部位
に、何ら不都合を生じさせることなく、前述の如き応力
集中緩和機能をもたせることができる。Further, the starting position of the chamfering or R-processing on the outer end face of the main body cylinder is determined by a plurality of FRs constituting the main body cylinder.
By being located in any one of the P layers, the start of chamfering or R processing can be prevented from becoming the starting point of delamination. Accordingly, the stress concentration relieving function as described above can be imparted to the chamfered or rounded portion without causing any inconvenience.
【００１５】[0015]
【実施例】以下に、本発明のＦＲＰ筒体の望ましい実施
例を図面を参照して説明する。なお、以下の実施例は、
本発明のＦＲＰ筒体をプロペラシャフトに適用した場合
を示している。図１および図２は本発明の第１実施例に
係るＦＲＰ製プロペラシャフトを示している。図におい
て、１はＦＲＰ製本体筒としてのプロペラシャフト用シ
ャフトを示しており、本体筒１は、炭素繊維、ガラス繊
維、ポリアラミド繊維等の高強度、高弾性率補強繊維で
エポキシ樹脂、不飽和ポリエステル樹脂、フェノール樹
脂、ビニルエステル樹脂、ポリイミド樹脂等の熱硬化性
樹脂や、ポリアミド樹脂、ポリカーボネート樹脂、ポリ
エーテルイミド樹脂等の熱可塑性樹脂を強化したものか
らなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the FRP cylinder according to the present invention will be described below with reference to the drawings. In the following examples,
The case where the FRP cylinder of the present invention is applied to a propeller shaft is shown. 1 and 2 show an FRP propeller shaft according to a first embodiment of the present invention. In the drawing, reference numeral 1 denotes a shaft for a propeller shaft as a main body tube made of FRP. The main body tube 1 is a high-strength, high-modulus reinforcing fiber such as carbon fiber, glass fiber, or polyaramid fiber, which is an epoxy resin, an unsaturated polyester. It is made of a reinforced resin such as a thermosetting resin such as a resin, a phenol resin, a vinyl ester resin, or a polyimide resin, or a thermoplastic resin such as a polyamide resin, a polycarbonate resin, or a polyetherimide resin.
【００１６】ＦＲＰ製本体筒１の両端部には、他部材と
しての金属製継手２が圧入接合されている。なお、図１
はＦＲＰ製本体筒１の一方の金属製継手２との接合部を
示しており、図示は省略したが、反対側の接合部も同様
に構成されている。At both ends of the main body tube 1 made of FRP, a metal joint 2 as another member is press-fitted and joined. FIG.
Indicates a joint portion between the FRP main body cylinder 1 and one metal joint 2, and although not shown, the opposite joint portion is similarly configured.
【００１７】ＦＲＰ製本体筒１の端部３の外端面４の内
周縁には面取り加工が施されており、該内周縁に面取り
加工面５が形成されている。金属製継手２は、その接合
部８が本体筒１の端部３内に圧入接合されており、継手
２の接合面８ａと本体筒１の内周面７とが、所定の圧入
代をもって互いに接合されている。この継手２には、立
面６が形成されており、立面６は本体筒１の外端面４に
当接されている。The inner peripheral edge of the outer end surface 4 of the end portion 3 of the FRP main body cylinder 1 is chamfered, and a chamfered surface 5 is formed on the inner peripheral edge. The joint portion 8 of the metal joint 2 is press-fitted into the end portion 3 of the main body tube 1, and the joint surface 8 a of the joint 2 and the inner peripheral surface 7 of the main body tube 1 are separated from each other with a predetermined press-in allowance. Are joined. An upright surface 6 is formed on the joint 2, and the upright surface 6 is in contact with the outer end surface 4 of the main body cylinder 1.
【００１８】継手２の接合面８ａの外径は本体筒１の内
径よりもやや大きく形成され、適当な圧入代が設定され
ている。この継手２の接合面８ａには、全周にわたっ
て、本体筒１の軸方向に延びる複数のセレーション９が
刻設されている。The outer diameter of the joint surface 8a of the joint 2 is formed slightly larger than the inner diameter of the main body tube 1, and an appropriate press-fitting margin is set. A plurality of serrations 9 extending in the axial direction of the main body cylinder 1 are engraved on the joint surface 8a of the joint 2 over the entire circumference.
【００１９】上記プロペラシャフトにおいては、本体筒
１に圧入された継手２の接合面８ａには、本体筒１の内
周面７側からの縮径力により圧縮応力が、本体筒１の内
周面７には、継手２の接合面８ａ側からの拡径力により
引張応力がそれぞれ生じ、この圧縮応力と引張応力とに
よって両者は強固に接合される。この状態では、ＦＲＰ
製本体筒１の端部３には、金属製継手２の圧入に起因す
る、圧入条件等に応じた応力が常時発生している状態に
あり、とくに外端面４の内周縁にはその応力が集中しや
すい。In the propeller shaft, a compressive stress is applied to the joint surface 8a of the joint 2 press-fitted into the main body cylinder 1 due to a diameter-reducing force from the inner peripheral surface 7 side of the main body cylinder 1. A tensile stress is generated on the surface 7 by the radial expansion force from the joint surface 8a side of the joint 2, and the compressive stress and the tensile stress firmly join the two. In this state, FRP
The end 3 of the main body cylinder 1 is in a state in which a stress corresponding to the press-fitting condition or the like due to the press-fitting of the metal joint 2 is constantly generated. In particular, the stress is applied to the inner peripheral edge of the outer end face 4. Easy to concentrate.
【００２０】しかし、外端面４の内周縁には面取り加工
が施されているので、内周縁の面取り加工面５は継手２
の接合面８ａとは非接触な状態に保持されるから、この
部分に局部的な応力集中が発生することが防止される。
このため過大な応力集中に起因するＦＲＰ製本体筒１の
端部接合部の強度低下や、層間剥離等が確実に防止され
る。したがって、面取り加工面５を設けない場合に比
べ、この部分自身の強度や継手２との接合強度が向上さ
れる。However, since the inner peripheral edge of the outer end face 4 is chamfered, the chamfered surface 5 of the inner peripheral edge is
Is maintained in a non-contact state with the bonding surface 8a, thereby preventing local stress concentration from occurring at this portion.
For this reason, a decrease in the strength of the end joint portion of the FRP main body cylinder 1 due to excessive stress concentration, delamination, and the like are reliably prevented. Therefore, the strength of this portion itself and the joining strength with the joint 2 are improved as compared with the case where the chamfered surface 5 is not provided.
【００２１】図３は、本発明の第２実施例に係るプロペ
ラシャフトを示している。図３において、上記第１実施
例と同一の部材には同一符号を付しその説明を省略す
る。本実施例においては、本体筒１の端部３の外端面４
の内周縁には、第１実施例の面取り加工に代え、Ｒ加工
が施されている。このようなＲ加工部１１を設ける構成
においても、上記第１実施例で説明したのと実質的に同
一の作用、効果を得ることができる。FIG. 3 shows a propeller shaft according to a second embodiment of the present invention. In FIG. 3, the same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the outer end face 4 of the end 3 of the main body cylinder 1 is provided.
An inner periphery is subjected to a rounding instead of the chamfering of the first embodiment. Even in such a configuration in which the R processing portion 11 is provided, substantially the same operation and effect as described in the first embodiment can be obtained.
【００２２】なお、上記第１、第２実施例においては、
本体筒端部内周縁に形成された面取り加工面５あるいは
Ｒ加工部１１は、継手２を本体筒１内に挿入、圧入する
際に一種の案内機構としての作用も発揮するので、圧入
の作業性も向上することができる。In the first and second embodiments,
Since the chamfered surface 5 or the rounded portion 11 formed on the inner peripheral edge of the end of the main body cylinder also functions as a kind of guide mechanism when the joint 2 is inserted and press-fitted into the main body cylinder 1, the workability of press-fitting is improved. Can also be improved.
【００２３】図４は、本発明の第３実施例に係るプロペ
ラシャフトを示している。本実施例においては、ＦＲＰ
製本体筒１の端部の端面４の内周縁部位に対向する、金
属製継手１３の接合部１４の接合面１４ａに、本体筒１
の内周面７と非接触の環状に延びる凹部１２が形成され
ている。FIG. 4 shows a propeller shaft according to a third embodiment of the present invention. In this embodiment, the FRP
The main body tube 1 is attached to the joint surface 14a of the joint portion 14 of the metal joint 13 opposite to the inner peripheral edge portion of the end face 4 of the end portion of the main body tube 1.
A concave portion 12 extending in an annular shape and not in contact with the inner peripheral surface 7 is formed.
【００２４】このように継手１３側に、環状凹部１２を
設ける構成としても、本体筒１の端縁部位において、本
体筒１の内周面７を継手１３の圧入接合面１４ａに対し
て非接触の状態に保てるので、本体筒１のこの部位への
応力集中を大幅に緩和することができる。したがって応
力集中に起因するＦＲＰ製本体筒１の端部の強度低下
や、層間剥離等が確実に防止される。As described above, even when the annular concave portion 12 is provided on the joint 13 side, the inner peripheral surface 7 of the main body cylinder 1 is not in contact with the press-fit joint surface 14a of the joint 13 at the edge portion of the main body cylinder 1. , The stress concentration on this portion of the main body cylinder 1 can be greatly reduced. Therefore, a decrease in the strength of the end portion of the main body 1 made of FRP caused by stress concentration, delamination, and the like are reliably prevented.
【００２５】図５は、本発明の第４実施例に係るプロペ
ラシャフトを示している。本実施例においては、ＦＲＰ
製本体筒２１は、その全長にわたって設けられ、軸方向
に対して強化繊維が±５〜±３０°の角度に配列された
ヘリカル巻層２１ａと、該ヘリカル巻層２１ａの内側
で、かつ、本体筒２１の両端部２３に設けたフープ巻層
２１ｂ（本実施例においては、軸方向に対して強化繊維
が±８０〜９０°の角度で配列されている。）とを、有
している。FIG. 5 shows a propeller shaft according to a fourth embodiment of the present invention. In this embodiment, the FRP
The main body cylinder 21 is provided over the entire length thereof, and has a helical winding layer 21a in which reinforcing fibers are arranged at an angle of ± 5 to ± 30 ° with respect to the axial direction, inside the helical winding layer 21a, and Hoop winding layers 21b (in the present embodiment, the reinforcing fibers are arranged at an angle of ± 80 to 90 ° with respect to the axial direction) provided at both end portions 23 of the cylinder 21.
【００２６】本体筒２１の筒軸方向外端面２１ｃの内周
縁、つまり、フープ巻層２１ｂの外端面の内周縁部位
に、面取り加工面２４が形成されている。また、本体筒
２１の端部２３に圧入される金属製継手２２には、その
外径がヘリカル巻層２１ａの内径よりも小さく、かつ、
フープ巻層２１ｂの外端面２１ｃと当接する立面２６が
形成されている。A chamfered surface 24 is formed on the inner peripheral edge of the outer end surface 21c in the axial direction of the main body cylinder 21, that is, on the inner peripheral portion of the outer end surface of the hoop winding layer 21b. The outer diameter of the metal joint 22 press-fit into the end portion 23 of the main body cylinder 21 is smaller than the inner diameter of the helical winding layer 21a, and
An upright surface 26 is formed which is in contact with the outer end surface 21c of the hoop winding layer 21b.
【００２７】本実施例においては、金属製継手２２をＦ
ＲＰ製本体筒２１に圧入すると、継手２２の接合部２７
の接合面２７ａには圧縮応力が、本体筒２１の継手２２
との接合部を構成しているフープ巻層２１ｂには周方向
の引張応力がそれぞれ作用し、これら圧縮応力と引張応
力とで両部材が接合されることになる。In this embodiment, the metal joint 22 is
When pressed into the RP main body cylinder 21, the joint portion 27 of the joint 22 is
Compressive stress is applied to the joint surface 27a of the
The tensile stress in the circumferential direction acts on the hoop winding layer 21b constituting the joint portion between the two members, and the two members are joined by the compressive stress and the tensile stress.
【００２８】そして本実施例では、本体筒２１の各端部
２３には、内側にフープ巻層２１ｂが存在し、外側にヘ
リカル巻層２１ａが存在するので、圧入接合によって本
体筒２１に生ずる周方向の引張応力は、主としてフープ
巻層２１ｂが受け持つことになる。また、本体筒２１の
周方向の歪は、内側で最も大きく、外側ほど小さくなる
が、強化繊維がフープ巻されているために引張破断伸度
が大きいフープ巻層２１ｂをそれよりも破断伸度が小さ
いヘリカル巻層２１ａの内側に位置させているから、効
果的な接合状態が現出されることになる。In this embodiment, since the hoop winding layer 21b is present on the inner side and the helical winding layer 21a is present on the outer side at each end 23 of the main body cylinder 21, the peripheral part formed in the main body cylinder 21 by press-fitting is provided. The tensile stress in the direction is mainly borne by the hoop winding layer 21b. The strain in the circumferential direction of the main body cylinder 21 is largest on the inner side and smaller on the outer side. However, the hoop winding layer 21b having a large tensile elongation at break due to the hoop winding of the reinforcing fiber has a larger elongation at break. Is located inside the small helical winding layer 21a, so that an effective bonding state appears.
【００２９】このように望ましい接合状態が得られる構
成において、フープ巻層２１ｂの外端面内周縁部位に面
取り加工が施され、面取り加工面２４が形成されている
ので、本体筒２１のこの部位への応力集中が大幅に緩和
され、応力集中に起因する本体筒２１の強度低下や、層
２１ａ、２１ｂ間等における層間剥離等が適切に防止さ
れる。In such a configuration that a desired bonding state is obtained, the inner peripheral edge portion of the outer end surface of the hoop winding layer 21b is chamfered and the chamfered surface 24 is formed. Of the main body cylinder 21 due to the stress concentration, and delamination between the layers 21a and 21b and the like are appropriately prevented.
【００３０】但し、本実施例で本体筒２１の両端部内側
にフープ巻層２１ｂを設けているのは、上記のような望
ましい継手２２との接合状態を得る目的の他、過度の圧
縮荷重が加わった際に、ＦＲＰ製本体筒２１が適切かつ
円滑に圧縮破壊できるようにすることも目的としてい
る。However, in the present embodiment, the hoop winding layer 21b is provided inside the both ends of the main body cylinder 21 in order to obtain the above-mentioned desirable joint state with the joint 22, and also to apply an excessive compressive load. It is another object of the present invention to allow the FRP main body cylinder 21 to appropriately and smoothly compress and break when added.
【００３１】すなわち、上述したプロペラシャフトにそ
の筒軸方向の圧縮荷重が加わると、継手２２が本体筒２
１に押し込まれ、内側に位置するフープ巻層２１ｂは引
張破断伸度が高いので破壊しないが、その外側にあるヘ
リカル巻層２１ａはフープ巻層２１ｂよりも引張破断伸
度が低いので、ヘリカル巻層２１ａがまず破壊する。こ
の破壊によってフープ巻層２１ｂとヘリカル巻層２１ａ
間の層間剥離が起こり、フープ巻層２１ｂとヘリカル巻
層２１ａとが離れる。この状態になると破壊が一気に進
むが、継手２２と接合されているフープ巻層２１ｂは破
壊することなくその継手２２とともにヘリカル巻層２１
ａを破壊しながら本体筒２１中を移動する。このように
して筒軸方向のエネルギーをヘリカル巻層２１ａの破壊
によって円滑に吸収することができる。That is, when a compressive load is applied to the above-described propeller shaft in the cylinder axis direction, the joint 22 is
1, the hoop winding layer 21b located on the inside does not break because it has a high tensile breaking elongation, but the helical winding layer 21a on the outside thereof has a lower tensile breaking elongation than the hoop winding layer 21b, so that the helical winding Layer 21a first breaks. This break causes the hoop winding layer 21b and the helical winding layer 21a.
Delamination occurs between the hoop winding layer 21b and the helical winding layer 21a. In this state, the destruction progresses at a stretch, but the hoop winding layer 21b joined to the joint 22 is not broken and the helical winding layer 21 together with the joint 22 is not broken.
It moves in the main body cylinder 21 while destroying a. In this manner, the energy in the cylinder axis direction can be smoothly absorbed by breaking the helical winding layer 21a.
【００３２】図６は、本発明の第５実施例に係るプロペ
ラシャフトを示している。本実施例においては、上記第
４実施例における面取り加工に代えて、フープ巻層２１
ｂの外端面内周縁部位に、Ｒ加工が施され、Ｒ加工部２
８が形成されている。このような構成においても上記第
４実施例に記載したのと実質的に同じ作用、効果を得る
ことができる。FIG. 6 shows a propeller shaft according to a fifth embodiment of the present invention. In this embodiment, the hoop winding layer 21 is replaced with the chamfering process in the fourth embodiment.
b processing is performed on the inner peripheral edge portion of the outer end face b
8 are formed. Even in such a configuration, substantially the same operation and effect as those described in the fourth embodiment can be obtained.
【００３３】図７は、本発明の第６実施例に係るプロペ
ラシャフトを示している。本実施例においては、前述の
第３実施例と同様、本体筒２１の端部２３の外端面内周
縁２４に対向する金属製継手２９の接合部３０の接合面
３０ａに、本体筒２１のフープ巻層２１ｂと非接触の環
状に延びる凹部３１が形成されている。FIG. 7 shows a propeller shaft according to a sixth embodiment of the present invention. In the present embodiment, as in the third embodiment described above, the hoop of the main body cylinder 21 is attached to the joint surface 30a of the joint 30 of the metal joint 29 facing the inner peripheral edge 24 of the outer end surface 23 of the end portion 23 of the main body cylinder 21. An annularly extending concave portion 31 is formed which is not in contact with the winding layer 21b.
【００３４】また、ＦＲＰ製本体筒２１に圧入される金
属製継手２９には、その外径がヘリカル巻層２１ａの内
径よりも小さく、かつ、フープ巻層２１ｂの外端面２１
ｃと当接する立面３２が形成されている。The outer diameter of the metal joint 29 press-fitted into the FRP main body cylinder 21 is smaller than the inner diameter of the helical winding layer 21a and the outer end face 21 of the hoop winding layer 21b.
An erect surface 32 is formed to abut on c.
【００３５】このように継手２９側に環状凹部３１を設
ける構成としても、第４、第５実施例におけるのと同
様、フープ巻層２１ｂと継手２９との効果的な接合状態
が現出されるとともに、上記非接触構成により本体筒２
１の外端面部位、ひいては接合部２３中における応力集
中が抑えられ、接合部２３の強度が向上される。As described above, even when the annular concave portion 31 is provided on the joint 29 side, an effective joint state between the hoop winding layer 21b and the joint 29 appears as in the fourth and fifth embodiments. In addition, the main body cylinder 2
The stress concentration in the outer end surface portion 1 and thus in the joint portion 23 is suppressed, and the strength of the joint portion 23 is improved.
【００３６】さらに本発明においては、本体筒側に前述
の面取り加工面やＲ加工面を設ける場合、次のような特
別の工夫を加えてある。すなわち、本体筒の端部が、図
８に示すように複数のＦＲＰ層３３ａ〜３３ｅの積層構
成からなる場合、前述の面取り加工面やＲ加工面（図８
においては面取り加工面３４として表示）は、その本体
筒３３の端面３５における開始位置３４ａが、径方向に
みて、ある一つのＦＲＰ層３３ｄの層中にくるようにし
ている。開始位置３４ａが丁度層間の位置にくると、層
間剥離の起点となるおそれが生じるが、このように層中
に位置させることにより、そのようなおそれも除去でき
る。Further, in the present invention, the aforementioned
When providing a chamfered surface or an R-processed surface,
Another ingenuity has been added. That is, when the end of the main body cylinder has a laminated structure of a plurality of FRP layers 33a to 33e as shown in FIG.
Display) as chamfering surface 34 in the starting position 34a on the end face 35 of the main body tube 33, viewed in the radial direction, so as to come in a layer of a single FRP layer 33d
ing. If the start position 34a is located exactly between the layers , there is a possibility that the starting position 34a becomes a starting point of delamination. However, such a danger can be eliminated by locating in the layer.
【００３７】以上の実施例では、本発明をＦＲＰ製プロ
ペラシャフトに適用した場合を説明したが、本発明は、
前述の如く、他のＦＲＰ筒体にも適用可能である。In the above embodiment, the case where the present invention is applied to a propeller shaft made of FRP has been described.
As described above, the present invention can be applied to other FRP cylinders.
【００３８】たとえば、第７実施例として、図９に本発
明をＦＲＰ製ロールに適用した場合を示す。図９におい
ては、ＦＲＰ製のロール環３６の両端部に軸部材３７が
圧入接合されている。ロール環３６の端部３８の内周縁
には、面取り加工が施され、面取り加工面３９が形成さ
れている。For example, FIG. 9 shows a seventh embodiment in which the present invention is applied to an FRP roll. In FIG. 9, shaft members 37 are press-fitted to both ends of a roll ring 36 made of FRP. The inner peripheral edge of the end portion 38 of the roll ring 36 is chamfered to form a chamfered surface 39.
【００３９】なお、本実施例においては、ＦＲＰ製ロー
ル環端部内周縁に面取り加工を施したが、内周縁にＲ加
工を施してもよく、また、軸部材３７の接合面４０の、
上記内周縁に対向する部位に環状凹部を設けてもよい。In the present embodiment, the inner peripheral edge of the FRP roll ring end is chamfered. However, the inner peripheral edge may be rounded, and the joining surface 40 of the shaft member 37 may be rounded.
An annular concave portion may be provided at a portion facing the inner peripheral edge.
【００４０】このように、ＦＲＰ製ロールにおいて、Ｆ
ＲＰ製ロール環３６の端部内周縁と軸部材３７との接合
部位を局部的に非接触状態にする構成によっても、この
部位への応力集中を大幅に緩和することができ、ＦＲＰ
筒体における本発明の目的が達せられる。As described above, in the FRP roll, F
Even if the joining portion between the inner peripheral edge of the end portion of the RP roll ring 36 and the shaft member 37 is made to be in a non-contact state locally, the concentration of stress on this portion can be significantly reduced, and the FRP
The object of the present invention in a tubular body is achieved.
【００４１】[0041]
【発明の効果】以上説明したように、本発明のＦＲＰ筒
体によるときは、ＦＲＰ製本体筒の端部の内周縁への応
力集中が大幅に緩和されるので、応力集中に起因するＦ
ＲＰ製本体筒端部の強度低下や層間剥離等を効果的に防
止でき、プロペラシャフトやロール状物に用いて最適な
ＦＲＰ筒体を実現することができる。As described above, when the FRP cylinder of the present invention is used, the concentration of stress on the inner peripheral edge of the end of the FRP main body cylinder is greatly reduced, so that the FRP caused by the stress concentration is reduced.
It is possible to effectively prevent a decrease in the strength of the end portion of the RP main body cylinder, delamination, and the like, and to realize an optimum FRP cylinder using a propeller shaft or a roll.
【図１】本発明の第１実施例に係るプロペラシャフトの
縦断面図である。FIG. 1 is a longitudinal sectional view of a propeller shaft according to a first embodiment of the present invention.
【図２】図１のＡ部の部分拡大縦断面図である。FIG. 2 is a partially enlarged longitudinal sectional view of a portion A in FIG.
【図３】本発明の第２実施例に係るプロペラシャフトの
部分拡大縦断面図である。FIG. 3 is a partially enlarged longitudinal sectional view of a propeller shaft according to a second embodiment of the present invention.
【図４】本発明の第３実施例に係るプロペラシャフトの
部分拡大縦断面図である。FIG. 4 is a partially enlarged longitudinal sectional view of a propeller shaft according to a third embodiment of the present invention.
【図５】本発明の第４実施例に係るプロペラシャフトの
部分縦断面図である。FIG. 5 is a partial longitudinal sectional view of a propeller shaft according to a fourth embodiment of the present invention.
【図６】本発明の第５実施例に係るプロペラシャフトの
部分縦断面図である。FIG. 6 is a partial longitudinal sectional view of a propeller shaft according to a fifth embodiment of the present invention.
【図７】本発明の第６実施例に係るプロペラシャフトの
部分縦断面図である。FIG. 7 is a partial longitudinal sectional view of a propeller shaft according to a sixth embodiment of the present invention.
【図８】本発明の別の態様を示すＦＲＰ製本体筒の端部
部分断面図である。FIG. 8 is a partial cross-sectional view of an end portion of an FRP main body cylinder showing another embodiment of the present invention.
【図９】本発明の第７実施例に係るロール状物の部分縦
断面図である。FIG. 9 is a partial longitudinal sectional view of a roll-shaped material according to a seventh embodiment of the present invention.
【図１０】従来のＦＲＰ筒体の部分縦断面図である。FIG. 10 is a partial longitudinal sectional view of a conventional FRP cylinder.
１、２１、３３ ＦＲＰ製本体筒 ２、１３、２２、２９ 他部材としての金属製継手 ３、２３、３８ 端部 ４、２１ｃ、３５ 外端部 ５、２４、３４、３９ 面取り加工面 ６、２６、３２ 立面 ７ 内周面 ８、１４、２７、３０ 継手の接合部 ８ａ、１４ａ、２７ａ、３０ａ 接合面 ９ セレーション １１、２８ Ｒ加工部 １２、３１ 環状凹部 ２１ａ ヘリカル巻層 ２１ｂ フープ巻層 ３３ａ、３３ｂ、３３ｃ、３３ｄ、３３ｅ ＦＲＰ層 ３４ａ 面取り開始位置 ３７ 軸部材 1, 21, 33 FRP main body cylinder 2, 13, 22, 29 Metal joints as other members 3, 23, 38 End 4, 21c, 35 Outer end 5, 24, 34, 39 Chamfered surface 6, 26, 32 Elevated surface 7 Inner peripheral surface 8, 14, 27, 30 Joint joint portion 8a, 14a, 27a, 30a Joint surface 9 Serration 11, 28 R machined portion 12, 31 Annular concave portion 21a Helical winding layer 21b Hoop winding layer 33a, 33b, 33c, 33d, 33e FRP layer 34a Chamfering start position 37 Shaft member
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−215118（ＪＰ，Ａ) 特開 平６−200951（ＪＰ，Ａ) 特開 昭55−149415（ＪＰ，Ａ) 特開 平５−106629（ＪＰ，Ａ) 実開 平５−87323（ＪＰ，Ｕ) 実開 昭63−118426（ＪＰ，Ｕ) 実開 昭61−191211（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16C 3/00 - 3/03 F16F 7/12 B60K 17/22 B29C 70/16 B29D 23/00 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-5-215118 (JP, A) JP-A-6-200951 (JP, A) JP-A-55-149415 (JP, A) JP-A-5-149415 106629 (JP, A) Japanese Utility Model Hei 5-87323 (JP, U) Japanese Utility Model 63-118426 (JP, U) Japanese Utility Model Utility Model 61-191211 (JP, U) (58) Field surveyed (Int. 7 , DB name) F16C 3/00-3/03 F16F 7/12 B60K 17/22 B29C 70/16 B29D 23/00
Claims (5)
入接合したＦＲＰ筒体において、前記本体筒は、複数の
ＦＲＰ層の積層構造を有し、該本体筒の端部内周縁に面
取り又はＲ加工を施すとともに、該面取り又はＲ加工の
本体筒外端面における開始位置が、ＦＲＰ層間位置を外
れたいずれか一つのＦＲＰ層の層内に位置していること
を特徴とするＦＲＰ筒体。1. An FRP cylindrical body in which another member is press-fitted to the inside of an end of an FRP main body cylinder.
It has a laminate structure of FRP layers, with facilities to the chamfering or R processing to an end inner peripheral edge of the main body tube, chamfering or R processing
The start position on the outer end face of the main body cylinder is outside the FRP interlayer position.
A FRP cylinder characterized by being located in any one of the FRP layers .
入接合したＦＲＰ筒体において、前記本体筒の端面の内
周縁に対向する前記他部材の外周面に環状の凹部を形成
したことを特徴とするＦＲＰ筒体。2. An FRP cylindrical body in which another member is press-fitted to the inside of an end portion of an FRP main body tube, wherein an annular concave portion is formed on an outer peripheral surface of the other member facing an inner peripheral edge of an end surface of the main body tube. An FRP cylinder characterized by the above-mentioned.
向に対して強化繊維が±５〜±３０°の角度で配列され
たヘリカル巻層と、 ｂ．前記ヘリカル巻層の内側で、かつ、本体筒の端部に
設けた、強化繊維のフープ巻層と、 を有している、請求項１または２のＦＲＰ筒体。3. The method according to claim 2, wherein the main body tube comprises: A helical winding layer provided over the entire length of the main body cylinder, in which reinforcing fibers are arranged at an angle of ± 5 to ± 30 ° with respect to the axial direction of the main body cylinder; b. The FRP cylinder according to claim 1 or 2, comprising: a hoop winding layer of a reinforcing fiber provided inside the helical winding layer and at an end of the main body cylinder.
トであり、前記他部材が継手である、請求項１ないし３
のいずれかに記載のＦＲＰ筒体。4. A shroud for a propeller shaft, wherein
And the other member is a joint.
The FRP cylinder according to any one of the above .
内径よりも小さく、かつ、前記フープ巻層の外端面と当
接する立面を有している、請求項４のＦＲＰ筒体。 5. The joint has an outer diameter of the helical winding layer.
Smaller than the inner diameter and in contact with the outer end face of the hoop winding layer
The FRP cylinder according to claim 4 , wherein the FRP cylinder has a contact surface .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26635894A JP3292351B2 (en) | 1994-10-04 | 1994-10-04 | FRP cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26635894A JP3292351B2 (en) | 1994-10-04 | 1994-10-04 | FRP cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08105428A JPH08105428A (en) | 1996-04-23 |
| JP3292351B2 true JP3292351B2 (en) | 2002-06-17 |
Family
ID=17429838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26635894A Expired - Lifetime JP3292351B2 (en) | 1994-10-04 | 1994-10-04 | FRP cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3292351B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK200401225A (en) | 2004-08-13 | 2006-02-14 | Lm Glasfiber As | Method for cutting laminate layers, for example a fiberglass or carbon fiber laminate layer in a wind turbine blade |
| GB2473007B (en) * | 2009-08-26 | 2012-11-21 | Messier Dowty Ltd | Apparatus comprising an end fitting connected to a body |
-
1994
- 1994-10-04 JP JP26635894A patent/JP3292351B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08105428A (en) | 1996-04-23 |
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