JP3269287B2 - FRP cylinder and manufacturing method thereof - Google Patents
FRP cylinder and manufacturing method thereofInfo
- Publication number
- JP3269287B2 JP3269287B2 JP26635694A JP26635694A JP3269287B2 JP 3269287 B2 JP3269287 B2 JP 3269287B2 JP 26635694 A JP26635694 A JP 26635694A JP 26635694 A JP26635694 A JP 26635694A JP 3269287 B2 JP3269287 B2 JP 3269287B2
- Authority
- JP
- Japan
- Prior art keywords
- main body
- layer
- resin
- frp
- cylinder
- 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 - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000010410 layer Substances 0.000 claims description 126
- 229920005989 resin Polymers 0.000 claims description 80
- 239000011347 resin Substances 0.000 claims description 80
- 239000012783 reinforcing fiber Substances 0.000 claims description 69
- 238000004804 winding Methods 0.000 claims description 61
- 239000000835 fiber Substances 0.000 claims description 49
- 230000002093 peripheral effect Effects 0.000 claims description 28
- 230000036346 tooth eruption Effects 0.000 claims description 22
- 239000011159 matrix material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000011247 coating layer Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 50
- 239000011151 fibre-reinforced plastic Substances 0.000 description 50
- 238000005520 cutting process Methods 0.000 description 8
- 238000005304 joining Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000009730 filament winding Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 102220057728 rs151235720 Human genes 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/026—Shafts made of fibre reinforced resin
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
- F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
- F16D3/387—Fork construction; Mounting of fork on shaft; Adapting shaft for mounting of fork
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/06—Drive shafts
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車等のプロペラシ
ャフト（駆動推進軸）に用いて好適なＦＲＰ（繊維強化
プラスチック）筒体およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP (fiber reinforced plastic) cylinder suitable for use in a propeller shaft (drive propulsion shaft) of an automobile or the like, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】最近、各種産業分野でＦＲＰ筒体が使わ
れてきつつある。たとえば、近年、燃費の向上や環境保
全といった観点から自動車の軽量化が強く望まれている
が、それを達成する一手段としてプロペラシャフトのＦ
ＲＰ化が検討され、一部で既に採用されるに至ってい
る。そのようなＦＲＰ製プロペラシャフトは、ＦＲＰ製
本体筒と、この本体筒の各端部に接合して設けた金属製
継手とを有している。2. Description of the Related Art Recently, FRP cylinders have been used in various industrial fields. For example, in recent years, it has been strongly desired to reduce the weight of automobiles from the viewpoint of improving fuel efficiency and environmental protection.
RP conversion has been studied and some have already adopted it. Such an FRP propeller shaft has an FRP main body tube and a metal joint provided at each end of the main body tube.
【０００３】ところで、自動車のプロペラシャフトは、
エンジンで発生するトルクを捩りトルクとして駆動輪に
伝達するものであるから、１００〜４００ｋｇｆ・ｍ程
度の捩り強度を必要とする。また、高速回転時に共振を
起こさないよう、危険回転数が５，０００〜１５，００
０ｒｐｍ程度であることも要求される。そのため、これ
らの基本的要求が満たされるよう、ＦＲＰ製プロペラシ
ャフトの本体筒は、強化繊維の種類、含有量や、強化繊
維の配列方向、層構成や、外径、内径、肉厚等のパラメ
ータを考慮した設計がなされる。[0003] By the way, the propeller shaft of an automobile is
Since the torque generated by the engine is transmitted to the drive wheels as torsional torque, a torsional strength of about 100 to 400 kgfm is required. In order to prevent resonance at high speed rotation, the critical rotation speed is set to 5,000 to 15,000.
It is also required to be about 0 rpm. Therefore, in order to satisfy these basic requirements, the main body cylinder of the FRP propeller shaft has parameters such as the type and content of the reinforcing fibers, the arrangement direction of the reinforcing fibers, the layer configuration, the outer diameter, the inner diameter, and the wall thickness. Is designed in consideration of
【０００４】たとえば、強化繊維の配列方向の選定に
は、次のようなことが考慮される。すなわち、主として
捩り強度に関しては、強化繊維を本体の筒軸方向に対し
て±４５°の角度で配列するのが最も効果的であるが、
主として捩り座屈強度に関しては、筒軸方向に対して±
８０〜９０°の角度で配列するのが最も効果的である。
また、主として危険回転数に関しては、強化繊維を可能
な限り筒軸方向に配列して筒軸方向における曲げ弾性率
を大きくし、高い曲げ共振周波数が得られるようにす
る。[0004] For example, the following is considered when selecting the arrangement direction of the reinforcing fibers. That is, regarding the torsional strength, it is most effective to arrange the reinforcing fibers at an angle of ± 45 ° with respect to the cylinder axis direction of the main body,
Mainly regarding torsional buckling strength, ±
It is most effective to arrange at an angle of 80 to 90 °.
In addition, mainly with respect to the critical rotation speed, reinforcing fibers are arranged in the cylinder axis direction as much as possible to increase the bending elastic modulus in the cylinder axis direction so that a high bending resonance frequency can be obtained.
【０００５】このように、ＦＲＰ製本体筒においては、
捩り強度と危険回転数といった基本的要求に関して最も
効果的な強化繊維の配列方向が存在するので、これらの
要求に好適な配列方向を組み合わせた層構成を採ること
になる。このようなＦＲＰ製本体筒は、たとえば樹脂を
含浸した強化繊維束をマンドレル上に所定方向に巻き付
けて硬化、成形する、いわゆるフィラメントワインディ
ング法によって成形され、上述の如き所望の強化繊維の
配列を有する層が構成される。この強化繊維は、通常、
強化繊維束として引き揃えられた連続繊維の形態をなし
ている。As described above, in the FRP main body cylinder,
Since there is the most effective arrangement direction of the reinforcing fibers with respect to the basic requirements such as the torsional strength and the critical rotation speed, a layer configuration combining the arrangement directions suitable for these requirements is adopted. Such an FRP main body cylinder is formed by, for example, a so-called filament winding method in which a reinforcing fiber bundle impregnated with a resin is wound around a mandrel in a predetermined direction and cured and formed, and has a desired reinforcing fiber arrangement as described above. The layers are configured. This reinforcing fiber is usually
It is in the form of continuous fibers aligned as a reinforcing fiber bundle.
【０００６】このように成形されたＦＲＰ製本体筒の端
部に、継手が圧入される。継手の接合強度を確保するた
めに、継手の圧入部の外径は、本体筒端部の内径よりも
若干大きく設定され、いわゆる圧入代が設けられる。ま
た、圧入部の接合強度を一層高めるために、継手圧入部
の本体筒との接合面に、本体筒の筒軸方向に延び周方向
に多数配列された切込み歯を設けることが有効であるこ
とが知られている。[0006] A joint is press-fitted into the end of the FRP main body cylinder thus formed. In order to ensure the joint strength of the joint, the outer diameter of the press-fit portion of the joint is set slightly larger than the inner diameter of the end of the main body cylinder, and a so-called press-fit allowance is provided. Further, in order to further increase the joining strength of the press-fit portion, it is effective to provide a plurality of cutting teeth extending in the cylinder axis direction of the main body tube and arranged in the circumferential direction on the joint surface of the joint press-fit portion with the main body tube. It has been known.
【０００７】[0007]
【発明が解決しようとする課題】ところが、上記のよう
に継手に切込み歯が設けられていると、継手が圧入され
る時、切込み歯がＦＲＰ製本体筒内周面に食い込んでい
くことになるが、その際、本体筒内周面に配列されてい
る強化繊維を切断してしまうことがある。とくに、本体
筒内周面の強化繊維配列方向が筒軸方向に対し±８０〜
９０°の角度であると、切込み歯は配列されている強化
繊維に対し略直交する方向に食い込んでいくことになる
ので、強化繊維が切断されやすくなる。However, if the joint is provided with the cutting teeth as described above, the cutting teeth will bite into the inner peripheral surface of the FRP main body cylinder when the joint is press-fitted. However, at that time, the reinforcing fibers arranged on the inner peripheral surface of the main body cylinder may be cut. In particular, the reinforcing fiber arrangement direction on the inner peripheral surface of the main body cylinder is ± 80 to the cylinder axis direction.
When the angle is 90 °, the cutting teeth bite in the direction substantially orthogonal to the reinforcing fibers arranged, so that the reinforcing fibers are easily cut.
【０００８】強化繊維が切断されると、継手との接合部
における本体筒の強度が部分的に低下し、その部位では
目標とする強度性能が発揮されなくなるので、強化繊維
の切断は極力防止されなければならない。[0008] When the reinforcing fibers are cut, the strength of the main body tube at the joint with the joint is partially reduced, and the target strength performance is not exhibited at that portion, so that cutting of the reinforcing fibers is prevented as much as possible. There must be.
【０００９】本発明の目的は、ＦＲＰ製プロペラシャフ
トに代表されるような、ＦＲＰ製本体筒に切込み歯を有
する他部材を圧入接合するＦＲＰ筒体において、切込み
歯による圧入時の強化繊維の切断を防止して、接合部に
おける本体筒の強度を向上することにある。SUMMARY OF THE INVENTION An object of the present invention is to cut a reinforcing fiber at the time of press-fitting by a cutting tooth in an FRP cylinder body, such as an FRP propeller shaft, which press-fits another member having a cutting tooth to an FRP main body cylinder. And to improve the strength of the main body cylinder at the joint.
【００１０】[0010]
【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製本体筒に他部材が圧入接合さ
れ、該他部材の本体筒との接合面に、軸方向に延び、か
つ、周方向に配列された切込み歯が設けられているＦＲ
Ｐ筒体において、前記本体筒は、該本体筒の全長にわた
って設けられた強化繊維のヘリカル巻層と、該ヘリカル
巻層の内側で、かつ、前記本体筒の端部に設けられた強
化繊維のフープ巻層とを有し、該フープ巻層に前記他部
材が圧入接合され、該フープ巻層の内周面には、樹脂の
み、または短繊維を含有する樹脂からなる層が設けられ
ていることを特徴とするものからなる。According to the present invention, there is provided an FRP cylinder body according to the present invention, wherein another member is press-fitted and joined to a main body cylinder made of FRP, and extends axially to a joint surface of the other member with the body cylinder. And FR provided with cutting teeth arranged in the circumferential direction
In the P cylindrical body, the main body tube includes a helical wound layer of reinforcing fibers provided over the entire length of the main body tube, and a reinforcing fiber provided inside the helical wound layer and at an end of the main body tube. A hoop winding layer, and the other member is press-fitted to the hoop winding layer, and a layer made of resin alone or a resin containing short fibers is provided on an inner peripheral surface of the hoop winding layer. Characterized by the following.
【００１１】上記短繊維は、樹脂中にランダムに分散含
有されるものであり、通常の強化繊維の短繊維は勿論の
こと、ミルドファイバー等も含むものである。The short fibers are randomly dispersed and contained in the resin, and include not only short fibers of ordinary reinforcing fibers but also milled fibers and the like.
【００１２】上記ＦＲＰ筒体としては、前述の如くＦＲ
Ｐ製プロペラシャフトが代表的なものであり、プロペラ
シャフトにおいては、上記他部材は本体筒の端部に圧入
接合される継手に相当する。また、本発明に係るＦＲＰ
筒体は、プロペラシャフトに限らず、ＦＲＰ製本体筒に
軸部材が圧入接合されたＦＲＰ製ロールや、ＦＲＰ製本
体筒に連結用部材が圧入接合されたＦＲＰ製カップリン
グ等にも適用可能である。As described above, the FRP cylinder is made of FR as described above.
A P-made propeller shaft is a typical example. In the propeller shaft, the other member corresponds to a joint press-fitted to an end of the main body cylinder. Further, the FRP according to the present invention
The cylindrical body is not limited to a propeller shaft, and can be applied to an FRP roll in which a shaft member is press-fitted and joined to an FRP main body cylinder, and an FRP coupling in which a connecting member is press-fitted and joined to an FRP main body cylinder. is there.
【００１３】また、前述の如く、とくに、ＦＲＰ製本体
筒の内周面に筒軸方向に対し±８０〜９０°の配列角度
で強化繊維が配置されていると、他部材の切込み歯で切
断されやすくなるので、本発明はこのようなＦＲＰ筒体
に適用して大きな効果を奏するものである。Further, as described above, particularly when reinforcing fibers are arranged on the inner peripheral surface of the FRP main body cylinder at an arrangement angle of ± 80 to 90 ° with respect to the cylinder axis direction, cutting is performed by the cutting teeth of other members. The present invention has a great effect when applied to such an FRP cylinder.
【００１４】本発明において、フープ巻層とは、強化繊
維の配列方向がＦＲＰ製本体筒の軸方向に対し±８０〜
９０°の層のことであり、ヘリカル巻層とは、強化繊維
の配列方向が本体筒の軸方向に対し±５〜±７５°の層
のことを言う。プロペラシャフトにおいて好ましいヘリ
カル巻層の強化繊維配列方向は、±５〜±３０°であ
る。In the present invention, the hoop winding layer means that the arrangement direction of the reinforcing fibers is ± 80 to the axial direction of the FRP main body cylinder.
The helical winding layer is a layer in which the arrangement direction of the reinforcing fibers is ± 5 ± 75 ° with respect to the axial direction of the main body cylinder. In the propeller shaft, the preferred orientation direction of the reinforcing fibers of the helical winding layer is ± 5 ± 30 °.
【００１５】本発明に係るＦＲＰ筒体は、各種方法によ
って製造できる。たとえば、本発明に係るＦＲＰ筒体の
製造方法は、マンドレルに、樹脂のみ、または短繊維を
含有する樹脂を塗布した後、塗布層の上に、強化繊維の
フープ巻層を構成する、マトリクス樹脂を含浸した強化
繊維束を巻き付けるとともに、フープ巻層の上に、成形
すべきＦＲＰ製本体筒の全長にわたって強化繊維のヘリ
カル巻層を構成する、マトリクス樹脂を含浸した強化繊
維束を巻き付け、前記塗布層の樹脂と前記フープ巻層お
よびヘリカル巻層のマトリクス樹脂とを硬化させてＦＲ
Ｐ製本体筒を成形し、該本体筒とマンドレルとを分離し
た後、前記本体筒の端部に、軸方向に延び、かつ、周方
向に配列された切込み歯を外周面に有する他部材を圧入
接合することを特徴とする方法からなる。The FRP cylinder according to the present invention can be manufactured by various methods. For example, the manufacturing method of the FRP cylinder according to the present invention, after applying only a resin or a resin containing short fibers to a mandrel, on the coating layer , the reinforcing fiber
Constituting the hoop winding layer, Rutotomoni winding a reinforcing fiber bundle impregnated with a matrix resin, on the hoop winding layer, forming
Helicopter of reinforcing fiber over the entire length of the main body made of FRP
Reinforced fiber impregnated with matrix resin that constitutes the wrapped layer
Wrap the wrap, and apply the resin for the coating layer and the hoop winding layer
And the matrix resin of the helical winding layer
After forming the main body cylinder made of P and separating the main body cylinder and the mandrel, another member having axially extending and circumferentially arranged cutting teeth on the outer peripheral surface is provided at an end of the main body cylinder. It consists of a method characterized by press-fitting.
【００１６】ここで、塗布層の樹脂を硬化させた後、マ
トリクス樹脂を含浸した強化繊維束を巻き付け、マトリ
クス樹脂を硬化させるようにしてもよい。Here, after the resin of the coating layer is cured, a reinforcing fiber bundle impregnated with a matrix resin may be wound to cure the matrix resin.
【００１７】また、本発明に係る別のＦＲＰ筒体の製造
方法は、本体筒の全長にわたって設けられた強化繊維の
ヘリカル巻層と、該ヘリカル巻層の内側で、かつ、前記
本体筒の端部に設けられた強化繊維のフープ巻層とを有
するＦＲＰ製本体筒を成形した後、本体筒の内周面に、
樹脂のみ、または短繊維を含有する樹脂を塗布し、樹脂
の硬化前または硬化後に、前記本体筒の端部に、軸方向
に延び、かつ、周方向に配列された切込み歯を外周面に
有する他部材を圧入接合することを特徴とする方法から
なる。Further, another method of manufacturing an FRP cylinder according to the present invention is a method of manufacturing a reinforcing fiber provided over the entire length of a main body cylinder.
A helical winding layer, inside the helical winding layer, and
And a hoop winding layer of reinforcing fibers provided at the end of the main body cylinder.
After molding the FRP binding body tube to the inner peripheral surface of the main body tube,
A resin alone or a resin containing short fibers is applied, and before or after the curing of the resin, the end portion of the main body cylinder has an axially extending, and circumferentially arranged notch tooth on the outer peripheral surface. The method is characterized in that another member is press-fitted and joined.
【００１８】[0018]
【作用】このようなＦＲＰ筒体においては、ＦＲＰ製本
体筒の他部材との接合部の内周面に、樹脂のみからなる
層、あるいは短繊維を含有する樹脂からなる層が設けら
れているので、圧入される他部材の切込み歯は、主とし
てこの樹脂層に食い込むことになる。したがって、強化
繊維の連続繊維が所定方向に配列された本体筒自身の内
周面部には実質的に影響を及ぼさず、連続繊維からなる
強化繊維が切込み歯によって切断されることはない。そ
の結果、他部材との接合部においても、連続繊維からな
る強化繊維の配置による、所定の目標とする強度特性が
確保され、従来構造に比べてこの部分の強度が向上され
る。In such an FRP cylinder, a layer made of only a resin or a layer made of a resin containing short fibers is provided on the inner peripheral surface of the joint portion of the FRP body cylinder with another member. Therefore, the cutting teeth of the other member to be press-fitted mainly cut into the resin layer. Therefore, the continuous fibers of the reinforcing fibers do not substantially affect the inner peripheral surface of the main body cylinder itself arranged in the predetermined direction, and the reinforcing fibers made of the continuous fibers are not cut by the cutting teeth. As a result, a predetermined target strength characteristic is secured even at a joint portion with another member due to the arrangement of the reinforcing fibers made of continuous fibers, and the strength of this portion is improved as compared with the conventional structure.
【００１９】また、上記樹脂のみからなる層、あるいは
短繊維を含有する樹脂からなる層は、本体筒自身と一体
的に成形されたものであるから両者間の接合強度は十分
に高い。また、他部材圧入状態において、食い込んだ切
込み歯部位を上記層が埋めることになるから、他部材と
上記層間、ひいては他部材と本体筒間の接合強度も十分
に高く保たれ、この間に要求される捩りトルク伝達特性
等も十分に高く保たれる。Further, since the layer composed of only the above resin or the layer composed of the resin containing short fibers is formed integrally with the main body cylinder itself, the bonding strength between them is sufficiently high. In addition, in the other member press-fit state, since the above-mentioned layer fills the biting incision site, the joining strength between the other member and the above-mentioned interlayer, and furthermore, the joining strength between the other member and the main body cylinder is kept sufficiently high. The torsional torque transmission characteristics are also kept sufficiently high.
【００２０】さらに、短繊維含有樹脂層とすれば、含有
短繊維は切込み歯の食い込みを何ら阻害することなく樹
脂層を補強する役目を発揮できるので、他部材と本体筒
との接合強度を一層向上することが可能になる。Further, if the short fiber-containing resin layer is used, the short fibers can serve to reinforce the resin layer without hindering the cutting of the incision teeth. Can be improved.
【００２１】[0021]
【実施例】以下に、本発明のＦＲＰ筒体の望ましい実施
例を、その製造方法とともに、図面を参照して説明す
る。図１および図２は、本発明の一実施例に係るＦＲＰ
筒体を示しており、本発明をＦＲＰ製プロペラシャフト
に適用した場合を示している。ＦＲＰ製本体筒の端部構
造については後述する。図１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、高弾性率強化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、ポリアラ
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てなるものである。本体
筒１の一端部および他端部には、他部材として金属製継
手２が圧入接合されている。このプロペラシャフトは、
長さ方向中心からみて対称形であり、図は一方の端部側
のみを示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the FRP cylinder according to the present invention, together with a method for manufacturing the same, will be described below with reference to the drawings. 1 and 2 show an FRP according to an embodiment of the present invention.
1 shows a cylindrical body, in which the present invention is applied to a propeller shaft made of FRP. End structure of FRP main body cylinder
The construction will be described later. In FIG. 1, reference numeral 1 denotes a shaft for a propeller shaft as a main body tube made of FRP, and the main body tube 1 is a high-strength, high-modulus reinforcing fiber such as carbon fiber, glass fiber, polyaramid fiber, epoxy resin, and unsaturated resin. It is obtained by reinforcing a thermosetting resin such as a polyester resin, a phenol resin, a vinyl ester resin, and a polyimide resin, and a thermoplastic resin such as a polyaramid resin, a polycarbonate resin, and a polyetherimide resin. A metal joint 2 is press-fitted to one end and the other end of the main body cylinder 1 as another member. This propeller shaft is
It is symmetrical when viewed from the center in the longitudinal direction, and the figure shows only one end side.
【００２２】本体筒１の内周面には、樹脂のみからなる
層、または短繊維を含有する樹脂からなる層３が設けら
れている。本実施例では層３は本体筒１の全長にわたっ
て設けられているが、継手２との接合部のみに設けても
よい。層３の樹脂の種類としては、上記本体筒１に用い
る樹脂と同様のものを用いればよく、本体筒１のマトリ
クス樹脂と同種のものであっても異種のものであっても
よい。層３が短繊維を含有する場合、短繊維と樹脂との
混練物からなる層とすればよい。使用する短繊維は、特
に限定されず、上記のような強化繊維の短繊維は勿論の
こと、他の短繊維であってもよい。また、短繊維の形態
としては、通常の短繊維の他、ミルドファイバー等であ
ってもよく、連続繊維のように一定の配列方向をもたな
いものであればよい。On the inner peripheral surface of the main body cylinder 1, a layer made of only a resin or a layer 3 made of a resin containing short fibers is provided. In this embodiment, the layer 3 is provided over the entire length of the main body cylinder 1, but may be provided only at the joint with the joint 2. As the kind of the resin of the layer 3, the same resin as the resin used for the main body cylinder 1 may be used, and may be the same or different from the matrix resin of the main body cylinder 1. When the layer 3 contains short fibers, it may be a layer made of a kneaded mixture of short fibers and a resin. The short fibers used are not particularly limited, and may be other short fibers as well as the above-described reinforcing fiber short fibers. In addition, the form of the short fiber may be a normal short fiber, a milled fiber, or the like, as long as it does not have a fixed arrangement direction like a continuous fiber.
【００２３】継手２の本体筒１への圧入接合面２ａに
は、本体筒１の軸方向に延び、かつ、周方向に多数配列
された切込み歯４が設けられている。接合面２ａの外径
は、層３の内径よりも若干大きく設定されており、所定
の圧入代をもって、継手２が本体筒１の端部内に圧入さ
れている。接合面２ａの外径、より正確には切込み歯４
の頂部の外径は、本体筒１の内径（つまり本体筒１と層
３との境界における内径）に対しては、実質的に同じで
あっても、若干大きくても若干小さくてもよい。目標と
する接合強度や、本体筒１の内周面における強化繊維の
配列状態等を考慮して決めればよい。A plurality of cutting teeth 4 extending in the axial direction of the main body cylinder 1 and arranged in the circumferential direction are provided on the press-fitting joining surface 2a of the joint 2 to the main body cylinder 1. The outer diameter of the joint surface 2a is set slightly larger than the inner diameter of the layer 3, and the joint 2 is press-fitted into the end of the main body cylinder 1 with a predetermined press-fitting allowance. Outer diameter of the joining surface 2a, more precisely, the cutting teeth 4
May be substantially the same, slightly larger or slightly smaller than the inner diameter of the main body cylinder 1 (that is, the inner diameter at the boundary between the main body cylinder 1 and the layer 3). It may be determined in consideration of the target bonding strength, the arrangement state of the reinforcing fibers on the inner peripheral surface of the main body tube 1, and the like.
【００２４】継手２が圧入接合された状態では、図２
（層３が樹脂のみからなる場合）や図３（層３が短繊維
５を含有する樹脂からなる場合）に示すように、継手２
の切込み歯４が主として層３に食い込んでいる。そし
て、切込み歯４の歯間には、樹脂あるいは短繊維含有樹
脂で埋められている。In a state where the joint 2 is press-fitted and joined, FIG.
As shown in FIG. 3 (when the layer 3 is made of a resin containing only short fibers 5) and FIG.
Are mainly cut into the layer 3. The space between the cutting teeth 4 is filled with a resin or a resin containing short fibers.
【００２５】内周面に上記層３が設けられた本体筒１は
次のように成形できる。たとえば図４に示すように、マ
ンドレル６に樹脂のみ、または短繊維を含有する樹脂を
塗布した後、塗布層３の樹脂が未硬化の状態にて該塗布
層３上に、マトリクス樹脂を含浸した強化繊維束７を、
マンドレル６を回転させて筒軸方向に対して所定の方向
に巻き付ける。強化繊維束７の巻付けは、所定回数筒軸
方向に往復させて行い、所望厚み、所望層構成の本体筒
１を形成する。このとき、層毎に強化繊維の配列方向を
変更してもよい。本体筒１の端部には、強化繊維のフー
プ巻層が設けられ、その上に本体筒１の全長にわたって
強化繊維のヘリカル巻層が設けられるが、この構造につ
いては後述する。巻き付け後、塗布層３の樹脂と強化繊
維束７に含浸されているマトリクス樹脂をともに硬化さ
せて、ＦＲＰ製本体筒１を成形し、成形された本体筒１
をマンドレル６から引き抜くと（本体筒１とマンドレル
６とを分離すると）、内周面に層３が一体的に成形され
た本体筒１が得られる。The main body cylinder 1 provided with the above-mentioned layer 3 on the inner peripheral surface can be formed as follows. For example, as shown in FIG. 4, after applying only a resin or a resin containing short fibers to the mandrel 6, the matrix layer resin is impregnated on the coating layer 3 in a state where the resin of the coating layer 3 is uncured. Reinforcing fiber bundle 7
The mandrel 6 is rotated and wound in a predetermined direction with respect to the cylinder axis direction. The winding of the reinforcing fiber bundle 7 is performed by reciprocating a predetermined number of times in the axial direction of the cylinder to form the main body cylinder 1 having a desired thickness and a desired layer configuration. At this time, the arrangement direction of the reinforcing fibers may be changed for each layer. At the end of the main body tube 1, a reinforcing fiber
Wrapping layer is provided over the entire length of the main body cylinder 1.
A helical wound layer of reinforcing fibers is provided.
Will be described later. After the winding, the resin of the coating layer 3 and the matrix resin impregnated in the reinforcing fiber bundle 7 are cured together to form the FRP main body tube 1.
Is pulled out from the mandrel 6 (when the main body tube 1 and the mandrel 6 are separated), the main body tube 1 in which the layer 3 is integrally formed on the inner peripheral surface is obtained.
【００２６】マンドレル６上で塗布層３の樹脂を先に硬
化させ、所定厚さの層３を成形した後、その上に上記マ
トリクス樹脂を含浸した強化繊維束７を巻き付けてい
き、マトリクス樹脂を硬化させて層３と一体化された本
体筒１を形成するようにしてもよい。After the resin of the coating layer 3 is first cured on the mandrel 6 to form the layer 3 having a predetermined thickness, the reinforcing fiber bundle 7 impregnated with the matrix resin is wound thereon. The main body tube 1 integrated with the layer 3 may be formed by curing.
【００２７】また、マンドレル６等を用いて先にＦＲＰ
製本体筒１を成形し、成形された本体筒１の内周面に、
所定厚みで樹脂または短繊維含有樹脂を塗布し、内周面
の層３を形成するようにしてもよい。この方法では、層
３の樹脂硬化後は勿論のこと、硬化前に継手２を圧入接
合することが可能である。Further, the FRP is first performed using a mandrel 6 or the like.
The main body tube 1 is formed, and on the inner peripheral surface of the formed main body tube 1,
A resin or a short fiber-containing resin may be applied at a predetermined thickness to form the inner peripheral layer 3. In this method, it is possible to press-fit the joint 2 not only after the resin of the layer 3 is cured but also before the resin is cured.
【００２８】上記いずれかの方法により、内周面に樹脂
のみ、あるいは短繊維を含有する樹脂からなる層３を有
する本体筒１を成形した後、本体筒１の端部に継手２が
圧入接合される。圧入後には、図２、図３に示したよう
に、切込み歯４が層３に食い込んだ状態となる。After forming the main body cylinder 1 having the layer 3 made of only the resin or the resin containing the short fiber on the inner peripheral surface by any of the above methods, the joint 2 is press-fitted to the end of the main body cylinder 1. Is done. After the press-fitting, as shown in FIGS. 2 and 3, the cutting teeth 4 enter the layer 3.
【００２９】上記のように構成されたＦＲＰ製プロペラ
シャフトにおいては、継手２が本体筒１に圧入されてい
く際、接合面２ａに設けられた切込み歯４は、層３に食
い込んでいく。したがって、強化繊維束が配列されてい
る本体筒１自身の内周面部位には実質的に悪影響を及ぼ
さず、強化繊維が切断されることはない。強化繊維が切
断されず、連続繊維からなる強化繊維が所定方向に配列
された状態が維持されるので、継手２との接合部におけ
る本体筒１の強度が維持される。また、従来の、切込み
歯を有する継手を本体筒の内周面部位に直接圧入してい
た場合に比べ、強化繊維が切断されない分接合部の強度
が向上される。In the FRP propeller shaft configured as described above, when the joint 2 is pressed into the main body cylinder 1, the cutting teeth 4 provided on the joint surface 2 a bite into the layer 3. Therefore, the inner peripheral surface portion of the main body cylinder 1 in which the reinforcing fiber bundles are arranged has substantially no adverse effect, and the reinforcing fibers are not cut. Since the state in which the reinforcing fibers made of continuous fibers are arranged in a predetermined direction is maintained without cutting the reinforcing fibers, the strength of the main body cylinder 1 at the joint with the joint 2 is maintained. Further, compared to the conventional case where the joint having the cutting teeth is directly press-fitted into the inner peripheral surface portion of the main body cylinder, the strength of the joint portion is improved by the fact that the reinforcing fibers are not cut.
【００３０】また、層３中には、一定方向に配列された
強化繊維束が存在しないから、継手２の圧入時に切込み
歯４が筒軸方向に侵入する際、大きな抵抗となる要素が
なく、圧入操作自身も極めて円滑に行われ得る。Further, since there are no reinforcing fiber bundles arranged in a certain direction in the layer 3, there is no element that causes a large resistance when the cutting teeth 4 penetrate in the cylinder axis direction when the joint 2 is press-fitted. The press-in operation itself can be performed very smoothly.
【００３１】また、層３は、本体筒１の内周面に本体筒
１と実質的に一体成形されているので、本体筒１と層３
との接合強度は十分に高い。したがって、継手２から本
体筒１へのトルク伝達も問題なく行われる。Further, since the layer 3 is formed substantially integrally with the main body cylinder 1 on the inner peripheral surface of the main body cylinder 1, the main body cylinder 1 and the layer 3 are formed.
Is sufficiently high. Therefore, torque transmission from the joint 2 to the main body cylinder 1 is performed without any problem.
【００３２】さらに、層３の樹脂中に短繊維５を含有さ
せておくと、層３自身の強度や剛性が向上されるから、
継手２と層３との接合強度、層３と本体筒１との接合強
度、さらには継手２と本体筒１との接合部全体の強度の
さらなる向上が可能となる。Further, when the short fibers 5 are contained in the resin of the layer 3, the strength and rigidity of the layer 3 itself are improved.
It is possible to further improve the joint strength between the joint 2 and the layer 3, the joint strength between the layer 3 and the main body cylinder 1, and the strength of the entire joint between the joint 2 and the main body cylinder 1.
【００３３】図５は、上記プロペラシャフトの本体筒１
の端部構造を示している。図５においては、本体筒１
が、その全長にわたって設けた、筒軸方向に対して強化
繊維が±５〜３０°の角度で配列された強化繊維のヘリ
カル巻層１ａと、このヘリカル巻層１ａの内側で、か
つ、本体筒１の一端部および他端部に設けた、強化繊維
のフープ巻層（筒軸方向に対して強化繊維が±８０〜９
０°の角度で配列された層）１ｂとを有している。ヘリ
カル巻層１ａは、本体筒１の、主として、筒軸方向にお
ける曲げ弾性率を向上させてプロペラシャフトの曲げ共
振周波数を高くし、危険回転数を高くするとともに、捩
り強度を向上させるように作用する。また、フープ巻層
１ｂは、本体筒１の、主として、継手２が圧入接合され
る各端部に、後述するような破壊の進行を妨げることな
く圧入時の力に耐える強度を与えるように作用する。こ
のような本体筒１はＦＲＰの成形法として周知の、たと
えばフィラメントワインディング法によって成形するこ
とができる。[0033] Figure 5, the main body tube 1 of the propeller shaft
2 shows an end structure of the first embodiment. In FIG. 5 , the main body cylinder 1
But provided over its entire length, and helicopters <br/> Cal wound layer 1a of reinforcing fibers reinforcing fibers are arranged at an angle of ± 5 to 30 ° with respect to the cylinder axis direction, inside the helical wound layer 1a And a hoop winding layer of reinforcing fibers provided at one end and the other end of the main body cylinder 1 (reinforcing fibers of ± 80 to 9 with respect to the cylinder axis direction).
Layers 1b arranged at an angle of 0 °). The helical winding layer 1a acts to increase the bending resonance frequency of the propeller shaft mainly by improving the bending elastic modulus of the main body cylinder 1 in the cylinder axis direction, thereby increasing the critical rotation speed and improving the torsional strength. I do. Further, the hoop winding layer 1b acts so as to mainly give each end of the main body cylinder 1 to which the joint 2 is press-fitted and joined, a strength to withstand a force at the time of press-fitting without hindering the progress of destruction as described later. I do. Such a main body tube 1 can be formed by, for example, a filament winding method known as a method of forming the FRP.
【００３４】すなわち、樹脂を含浸した強化繊維束を用
い、マンドレルの一端部に所望の厚み、所望の長さのフ
ープ巻層を形成した後、そのまま強化繊維束をマンドレ
ルの他端部に走らせてその他端部に同様のフープ巻層を
形成する。引き続き、他端部から始めてその他端部と一
端部との間を往復しながら所望の厚みのヘリカル巻層を
形成する。ヘリカル巻層の形成を他端部で終えた後、引
き続いて一端部に向かって強化繊維束を移動させて薄い
フープ巻層を形成することもでき、そうすると、余分な
樹脂が絞り出されて強化繊維の体積含有率が高くなり、
本体筒の各種強度や弾性率等がさらに向上するようにな
る。このようにして、強化繊維束を中途で切断すること
なく連続して巻層を形成することができる。巻層の形成
後は、好ましくは回転させながら樹脂を硬化ないし固化
させ、マンドレルを引き抜いて本体筒を得る。That is, a hoop winding layer having a desired thickness and a desired length is formed at one end of a mandrel using a reinforcing fiber bundle impregnated with a resin, and then the reinforcing fiber bundle is allowed to run to the other end of the mandrel. A similar hoop winding layer is formed at the other end. Subsequently, a helical winding layer having a desired thickness is formed while reciprocating between the other end and the one end, starting from the other end. After forming the helical winding layer at the other end, the reinforcing fiber bundle can be moved toward the one end to form a thin hoop winding layer. The volume content of the fiber increases,
Various strengths, elastic moduli and the like of the main body cylinder are further improved. In this way, the winding layer can be formed continuously without cutting the reinforcing fiber bundle halfway. After the formation of the wound layer, the resin is preferably hardened or solidified while rotating, and the mandrel is pulled out to obtain a main body cylinder.
【００３５】上記のように、本体筒１の、継手２の圧入
接合部における内層側に、上記のような角度のフープ巻
層１ｂを有する場合、継手２の圧入方向とフープ巻層１
ｂ内の強化繊維の配列方向とが略直交することになるの
で、フープ巻層１ｂの内周面に直接継手２が圧入される
と、切込み歯４がフープ巻層１ｂの強化繊維を切断しや
すくなる。ところが本発明では、フープ巻層１ｂの内周
面に樹脂のみ、あるいは短繊維を含有する樹脂からなる
層３が設けられているので、継手２の切込み歯４は実質
的に層３にのみ食い込み、フープ巻層１ｂの強化繊維を
切断することはない。したがって、本体筒１端部接合部
の強度が、フープ巻層１ｂ内に直接圧入する場合に比
べ、大幅に向上される。このように、本発明では、本体
筒１の端部内側にフープ巻層１ｂを有する場合、一層大
きな効果が得られる。As described above, in the case where the hoop winding layer 1b having the above angle is provided on the inner layer side of the main cylinder 1 at the press-fitting joint portion of the joint 2, the press-fit direction of the joint 2 and the hoop winding layer 1
b, the arrangement direction of the reinforcing fibers is substantially perpendicular to the inner surface of the hoop winding layer 1b, so that when the joint 2 is directly pressed into the inner peripheral surface of the hoop winding layer 1b, the cutting teeth 4 cut the reinforcing fibers of the hoop winding layer 1b. It will be easier. However, in the present invention, since the layer 3 made of resin only or resin containing short fibers is provided on the inner peripheral surface of the hoop winding layer 1b, the cutting teeth 4 of the joint 2 bite into only the layer 3 substantially. The reinforcing fibers of the hoop winding layer 1b are not cut. Therefore, the strength of the end joining portion of the main body cylinder 1 is greatly improved as compared with the case where the end portion is directly press-fitted into the hoop winding layer 1b. As described above, in the present invention, when the hoop winding layer 1b is provided inside the end of the main body cylinder 1, a greater effect can be obtained.
【００３６】このフープ巻層１ｂを設けることにより、
次のような効果が得られる。すなわち、継手２を本体筒
１に圧入すると、継手２の接合面２ａには圧縮応力が、
また、本体筒１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本体筒１と継手２と
が強固に接合されるようになる。そして、本体筒１の各
端部には、内側にフープ巻層１ｂが存在し、外側にヘリ
カル巻層１ａが存在するので、圧入接合によって本体筒
１に生ずる周方向の引張応力は、主としてフープ巻層１
ｂが受け持つことになる。また、本体筒１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１ｂをそれよりも破断伸度が小さいヘリカル巻
層１ａ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。By providing this hoop winding layer 1b,
The following effects can be obtained. That is, when the joint 2 is press-fitted into the main body cylinder 1, a compressive stress is applied to the joint surface 2a of the joint 2,
Further, a tensile stress in the circumferential direction acts on the main body cylinder 1, and the main body cylinder 1 and the joint 2 are firmly joined by the compressive stress and the tensile stress. At each end of the main body tube 1, the hoop winding layer 1b is present on the inner side and the helical winding layer 1a is present on the outer side. Winding layer 1
b will take over. The strain in the circumferential direction of the main body tube 1 is the largest on the inside and becomes smaller on the outside, but the hoop winding layer 1b 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 1a, so that an effective bonding state appears.
【００３７】また、近年のプロペラシャフトに対する設
計理想として、プロペラシャフトの軸方向に大きな剛性
をもたせるのではなく、衝突時等のボディの破壊に伴な
い、軸方向に円滑に圧縮破壊させ、もって圧縮方向の衝
撃エネルギーを良好に吸収させるようにすることが望ま
しいとされている。上記フープ巻層１ｂの設置は、この
ような技術思想にも適合している。Further, as a design ideal for a propeller shaft in recent years, instead of having a large rigidity in the axial direction of the propeller shaft, the propeller shaft is smoothly compressed and destroyed in the axial direction accompanying the destruction of the body at the time of collision or the like. It is desirable to have good absorption of impact energy in the direction. The installation of the hoop winding layer 1b conforms to such a technical idea.
【００３８】すなわち、継手２から加わる筒軸方向の圧
縮荷重は、フープ巻層１ｂに当接するフランジ部２ｂか
らそのフープ巻層１ｂに伝達され、さらにヘリカル巻層
１ａに伝達される。したがって、ヘリカル巻層１ａも圧
縮変形するが、フープ巻層１ｂとヘリカル巻層１ａとで
はポアソン比の差が大きいので両者の層間にそれを破壊
させようとする剪断応力が作用し、この剪断応力と、圧
縮荷重によって層間に生ずる剪断応力と、継手２の圧入
によって生じている引張応力との２次元応力状態の下で
層間が剥離、破壊する。この層間破壊（層間剥離）に伴
い、引張破断伸度が高く継手２と接合されているフープ
巻層１ｂは、それ自身実質的に破壊することなく、継手
２とともにヘリカル巻層１ａを拡径して破壊しながら本
体筒１中を軸方向に移動する。この移動に伴って筒軸方
向の衝撃エネルギーが円滑にかつ確実に吸収されてい
く。このように、フープ巻層１ｂを設けることにより、
ＦＲＰ製プロペラシャフトの筒軸方向圧縮荷重による円
滑な破壊が可能となる。That is, the compressive load in the cylinder axis direction applied from the joint 2 is transmitted to the hoop winding layer 1b from the flange portion 2b abutting on the hoop winding layer 1b, and further transmitted to the helical winding layer 1a. Therefore, the helical winding layer 1a also undergoes compressive deformation, but the difference in Poisson's ratio between the hoop winding layer 1b and the helical winding layer 1a is large, so that a shear stress acts between the two layers to break it, and this shear stress is applied. Under the two-dimensional stress state of the shear stress generated between the layers by the compressive load and the tensile stress generated by the press-fitting of the joint 2, the layers are separated and broken. The hoop winding layer 1b, which has a high tensile elongation at break and is joined to the joint 2 due to the interlayer fracture (delamination), expands the helical winding layer 1a together with the joint 2 without substantially breaking itself. It moves in the main body cylinder 1 in the axial direction while breaking. With this movement, impact energy in the cylinder axis direction is smoothly and reliably absorbed. Thus, by providing the hoop winding layer 1b,
Smooth breakage of the FRP propeller shaft due to the compressive load in the cylinder axis direction is possible.
【００３９】以上の説明は、本発明をＦＲＰ製プロペラ
シャフトに適用した場合について述べたが、本発明は、
プロペラシャフトに限らず、広く一般のＦＲＰ筒体に適
用できる。たとえば、ＦＲＰ製本体筒の端部に軸部材を
圧入接合したＦＲＰ製ロール、ＦＲＰ製本体筒に他装置
との連結用部材が圧入接合されたＦＲＰ製カップリング
等にも適用できる。In the above description, the case where the present invention is applied to an FRP propeller shaft has been described.
The invention can be applied not only to a propeller shaft but also to a general FRP cylinder. For example, the present invention can be applied to an FRP roll in which a shaft member is press-fitted to an end of an FRP main body cylinder, an FRP coupling in which a member for connection to another device is press-fitted to the FRP main body cylinder, and the like.
【００４０】また、本発明において本体筒内周面に設け
られる樹脂のみ、あるいは短繊維を含有する樹脂からな
る層は、強化繊維の連続繊維を含有するＦＲＰ層に比
べ、剛性が低く弾性が高い。したがって、この特性を積
局的に利用し、圧入接合される他部材と本体筒との間
で、捩り方向微振動を吸収させたり、捩り剛性を意図的
に低下させて振動減衰機能をもたせたりすることも可能
である。このような特性は、たとえばフレキシブルカッ
プリング等において積極的に利用できる。In the present invention, the layer formed of only the resin or the resin containing the short fibers provided on the inner peripheral surface of the main body cylinder has lower rigidity and higher elasticity than the FRP layer containing the continuous fibers of the reinforcing fibers. . Therefore, by utilizing this characteristic systematically, a small vibration in the torsional direction is absorbed between the other member to be press-fitted and the main body cylinder and a vibration damping function is provided by intentionally reducing the torsional rigidity. It is also possible. Such a characteristic can be positively used in, for example, a flexible coupling.
【００４１】構造的には、たとえば図６に示すように、
本体筒１１の内周面に設ける樹脂のみ、あるいは短繊維
を含有する樹脂からなる層１２を比較的厚く形成してお
き、圧入接合される他部材１３の切込み歯１４の先端が
本体筒１１の内周面までは届かないようにしておけば、
層１２に、捩り方向に高い振動吸収性能や振動減衰性能
をもたせることができる。In terms of structure, for example, as shown in FIG.
A layer 12 made of only the resin provided on the inner peripheral surface of the main body cylinder 11 or a resin containing short fibers is formed relatively thick, and the tip of the cutting teeth 14 of the other member 13 to be press-fitted and joined is formed of the main body cylinder 11. If you do not reach the inner circumference,
The layer 12 can have high vibration absorption performance and high vibration damping performance in the torsional direction.
【００４２】[0042]
【発明の効果】以上説明したように、本発明によれば、
ＦＲＰ製本体筒の圧入接合面に樹脂のみ、あるいは短繊
維を含有する樹脂からなる層を設け、圧入される他部材
の切込み歯が本体筒内の強化繊維を切断しないようにし
たので、所望の接合強度を確保しつつ、接合部における
本体筒の強度を向上することができるという効果が得ら
れる。As described above, according to the present invention,
A layer made of only resin or a resin containing short fibers was provided on the press-fit joint surface of the FRP main body cylinder, so that the cutting teeth of another member to be press-fitted did not cut the reinforcing fibers in the main body cylinder, The effect is obtained that the strength of the main body cylinder at the joint can be improved while securing the joint strength.
【図１】本発明の一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. 1 is a partial longitudinal sectional view of a propeller shaft according to one embodiment of the present invention.
【図２】図１のプロペラシャフトの拡大部分横断面図で
ある。FIG. 2 is an enlarged partial cross-sectional view of the propeller shaft of FIG.
【図３】設けられる層が短繊維を含有する場合の部分横
断面図である。FIG. 3 is a partial cross-sectional view when a layer to be provided contains short fibers.
【図４】図１のプロペラシャフトの本体筒の成形方法を
示す斜視図である。FIG. 4 is a perspective view showing a method of forming a main body cylinder of the propeller shaft of FIG.
【図５】図１のプロペラシャフトの本体筒端部構造を示
す分解部分縦断面図である。FIG. 5 shows the structure of the end of the main body cylinder of the propeller shaft of FIG . 1;
It is to decompose partial longitudinal sectional view.
【図６】本発明の別の実施例に係るＦＲＰ筒体の部分横
断面図である。FIG. 6 is a partial cross-sectional view of an FRP cylinder according to another embodiment of the present invention.
１、１１ 本体筒 １ａ ヘリカル巻層 １ｂ フープ巻層 ２ 継手 ２ａ 接合面 ２ｂ フランジ部 ３、１２ 樹脂のみ、あるいは短繊維を含有する樹脂か
らなる層 ４、１４ 切込み歯 ５ 短繊維 ６ マンドレル ７ 樹脂含浸強化繊維束 １３ 他部材DESCRIPTION OF SYMBOLS 1, 11 Main body cylinder 1a Helical winding layer 1b Hoop winding layer 2 Joint 2a Joining surface 2b Flange part 3,12 Layer made of resin only or resin containing short fiber 4,14 Cutting tooth 5 Short fiber 6 Mandrel 7 Resin impregnation Reinforced fiber bundle 13 Other members
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２９Ｋ 105:08 Ｂ２９Ｌ 31:06 Ｂ２９Ｌ 31:06 Ｂ２９Ｃ 67/14 Ｃ (56)参考文献 特開 平１−154730（ＪＰ，Ａ) 特開 昭59−133813（ＪＰ，Ａ) 特開 昭59−93507（ＪＰ，Ａ) 特開 昭63−199915（ＪＰ，Ａ) 実開 平１−91118（ＪＰ，Ｕ) 実開 平１−91117（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 70/00 - 70/88 B29C 65/00 - 65/82 B60K 17/00 - 17/36 F16C 3/00 - 3/30 B32B 27/00 - 27/42 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification symbol FI B29K 105: 08 B29L 31:06 B29L 31:06 B29C 67/14 C (56) References JP-A-1-154730 (JP, A JP-A-59-133813 (JP, A) JP-A-59-93507 (JP, A) JP-A-63-199915 (JP, A) JP-A-1-91118 (JP, U) JP-A-1 91117 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B29C 70/00-70/88 B29C 65/00-65/82 B60K 17/00-17/36 F16C 3/00 -3/30 B32B 27/00-27/42
Claims (5)
れ、該他部材の本体筒との接合面に、軸方向に延び、か
つ、周方向に配列された切込み歯が設けられているＦＲ
Ｐ筒体において、前記本体筒は、該本体筒の全長にわた
って設けられた強化繊維のヘリカル巻層と、該ヘリカル
巻層の内側で、かつ、前記本体筒の端部に設けられた強
化繊維のフープ巻層とを有し、該フープ巻層に前記他部
材が圧入接合され、該フープ巻層の内周面には、樹脂の
み、または短繊維を含有する樹脂からなる層が設けられ
ていることを特徴とするＦＲＰ筒体。1. An FR member in which another member is press-fitted and joined to an FRP main body cylinder, and a notch tooth extending in an axial direction and arranged in a circumferential direction is provided on a joint surface of the other member with the main body cylinder.
In the P cylindrical body, the main body tube includes a helical wound layer of reinforcing fibers provided over the entire length of the main body tube, and a reinforcing fiber provided inside the helical wound layer and at an end of the main body tube. A hoop winding layer, and the other member is press-fitted to the hoop winding layer, and a layer made of resin alone or a resin containing short fibers is provided on an inner peripheral surface of the hoop winding layer. An FRP cylinder body characterized by the above-mentioned.
用シャフトであり、前記他部材が継手である、請求項１
のＦＲＰ筒体。2. The FRP main body tube is a shaft for a propeller shaft, and the other member is a joint.
FRP cylinder.
を含有する樹脂を塗布した後、塗布層の上に、強化繊維
のフープ巻層を構成する、マトリクス樹脂を含浸した強
化繊維束を巻き付けるとともに、フープ巻層の上に、成
形すべきＦＲＰ製本体筒の全長にわたって強化繊維のヘ
リカル巻層を構成する、マトリクス樹脂を含浸した強化
繊維束を巻き付け、前記塗布層の樹脂と前記フープ巻層
およびヘリカル巻層のマトリクス樹脂とを硬化させてＦ
ＲＰ製本体筒を成形し、該本体筒とマンドレルとを分離
した後、前記本体筒の端部に、軸方向に延び、かつ、周
方向に配列された切込み歯を外周面に有する他部材を圧
入接合することを特徴とする、ＦＲＰ筒体の製造方法。3. A method in which only a resin or a resin containing short fibers is applied to a mandrel, and a reinforcing fiber is applied on the coating layer.
Constituting the hoop wound layer, Rutotomoni winding a reinforcing fiber bundle impregnated with a matrix resin, on the hoop winding layer, formed
The reinforcement fiber extends over the entire length of the FRP body tube to be shaped.
Reinforced with matrix resin impregnated to form a lycal wound layer
The fiber bundle is wound, and the resin of the coating layer and the hoop winding layer
And curing the helical winding matrix resin and F
After forming the main body tube made of RP and separating the main body tube and the mandrel, at the end of the main body tube, extend another member in the outer peripheral surface having cutting teeth extending in the axial direction and arranged in the circumferential direction. A method for manufacturing an FRP cylinder, comprising press-fitting.
リクス樹脂を含浸した強化繊維束を巻き付け、マトリク
ス樹脂を硬化させる、請求項３のＦＲＰ筒体の製造方
法。 4. The method for producing an FRP cylinder according to claim 3, wherein after the resin of the coating layer is cured, the reinforcing fiber bundle impregnated with the matrix resin is wound and the matrix resin is cured.
繊維のヘリカル巻層と、該ヘリカル巻層の内側で、か
つ、前記本体筒の端部に設けられた強化繊維のフープ巻
層とを有するＦＲＰ製本体筒を成形した後、本体筒の内
周面に、樹脂のみ、または短繊維を含有する樹脂を塗布
し、樹脂の硬化前または硬化後に、前記本体筒の端部
に、軸方向に延び、かつ、周方向に配列された切込み歯
を外周面に有する他部材を圧入接合することを特徴とす
る、ＦＲＰ筒体の製造方法。Claim 5.Enhancements provided over the entire length of the body tube
The helical wound layer of the fiber and the inside of the helical wound layer
A hoop winding of a reinforcing fiber provided at an end of the main body cylinder
With layersAfter molding the FRP main body cylinder,
Apply resin only or resin containing short fibers to the peripheral surface
Before or after curing of the resin, the main body tubeEnd of
The cutting teeth which extend in the axial direction and are arranged in the circumferential direction
Other members having an outer peripheral surface by press-fitting.
A method of manufacturing an FRP cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26635694A JP3269287B2 (en) | 1994-10-04 | 1994-10-04 | FRP cylinder and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26635694A JP3269287B2 (en) | 1994-10-04 | 1994-10-04 | FRP cylinder and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08103965A JPH08103965A (en) | 1996-04-23 |
| JP3269287B2 true JP3269287B2 (en) | 2002-03-25 |
Family
ID=17429810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26635694A Expired - Fee Related JP3269287B2 (en) | 1994-10-04 | 1994-10-04 | FRP cylinder and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3269287B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4771208B2 (en) * | 2004-07-28 | 2011-09-14 | 東レ株式会社 | FRP cylinder and manufacturing method thereof |
| JP4631428B2 (en) * | 2004-12-24 | 2011-02-16 | 東レ株式会社 | FRP cylinder, shaft-like component using the same, and propeller shaft |
| JP4755581B2 (en) * | 2006-12-28 | 2011-08-24 | 吉佳株式会社 | Ready-made pipe for pipe formation |
| JP5937769B2 (en) * | 2014-05-26 | 2016-06-22 | 藤倉ゴム工業株式会社 | FRP drive shaft |
| JP6540085B2 (en) * | 2015-02-20 | 2019-07-10 | 東レ株式会社 | Propeller shaft |
| CN108856597B (en) * | 2018-05-31 | 2023-11-03 | 新疆国统管道股份有限公司 | PCCP steel wire joint and binding method thereof |
| JP7120955B2 (en) * | 2019-03-28 | 2022-08-17 | 藤倉コンポジット株式会社 | FRP composite molded product |
-
1994
- 1994-10-04 JP JP26635694A patent/JP3269287B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08103965A (en) | 1996-04-23 |
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