JP2573861B2 - Fiber reinforced plastic shaft - Google Patents
Fiber reinforced plastic shaftInfo
- Publication number
- JP2573861B2 JP2573861B2 JP63055464A JP5546488A JP2573861B2 JP 2573861 B2 JP2573861 B2 JP 2573861B2 JP 63055464 A JP63055464 A JP 63055464A JP 5546488 A JP5546488 A JP 5546488A JP 2573861 B2 JP2573861 B2 JP 2573861B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- yoke
- hole
- reinforced plastic
- fiber
- 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
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
- 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
【発明の詳細な説明】 産業上の利用分野 この発明は、たとえば自動車のドライブシャフトなど
に使用される繊維強化プラスチック（以下、FRPと称す
る）製軸に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft made of fiber reinforced plastic (hereinafter, referred to as FRP) used for, for example, a drive shaft of an automobile.
従来の技術および発明の課題 近年、自動車のドライブシャフトなどには、軽量化を
図るため、FRRにより円筒状の形成された軸が使用され
るようになっている。ドライブシャフトなどの場合、端
部が十字状ユニバーサルジョイント部材を介して他の軸
に連結されるため、端部に、十字状ユニバーサルジョイ
ント部材の対称位置にある２つの軸部の軸受の部分がは
まる穴を有する二股状のヨーク部が一体に形成された連
結部材が取り付けられる。2. Description of the Related Art In recent years, a shaft formed in a cylindrical shape by FRR has been used for a drive shaft of an automobile or the like in order to reduce the weight. In the case of a drive shaft or the like, since the ends are connected to other shafts via the cross-shaped universal joint member, the ends of the bearing portions of the two shaft portions at the symmetric positions of the cross-shaped universal joint member fit into the ends. A connecting member in which a forked yoke portion having a hole is integrally formed is attached.
このようなFRP製軸として、端部に連結部材が圧入さ
れるかまたは挿入されて接着などにより接合されたもの
が知られている。ところが、この場合は、軸の端部と連
結部材の圧入部または接着部でトルクを受けるため、捩
り強度が十分でなく、圧入部または接着部で軸と連結部
材とが相対的に回転してしまうおそれがある。As such a shaft made of FRP, a shaft in which a connecting member is press-fitted or inserted into an end portion and joined by bonding or the like is known. However, in this case, since torque is received at the end of the shaft and the press-fit portion or the bonding portion of the connecting member, the torsional strength is not sufficient, and the shaft and the connecting member rotate relatively at the press-fit portion or the bonding portion. There is a possibility that it will.
プラスチック製または金属製の薄肉円筒の端部に連結
部材の端部をはめ、これらに繊維を巻き付けて一体化し
たFRP製軸も知られている（特公昭57−30367号参照）。
ところが、この場合は、軸に薄肉円筒や連結部材がその
まま残るため、重量が増し、軽量化というFRP製軸のメ
リットが半減する。There is also known an FRP shaft in which the end of a connecting member is fitted to the end of a thin cylinder made of plastic or metal, and a fiber is wound around these to integrate them (see Japanese Patent Publication No. 57-30367).
However, in this case, since the thin cylinder and the connecting member remain on the shaft, the weight is increased, and the merit of the FRP shaft, which is reduced in weight, is reduced by half.
FRP製軸の製造を容易にするために、軸の端部に二股
状のヨーク部を形成せずに、軸の端部を円筒状のままヨ
ーク部とすることも考えられるが、このようにすると、
自在継手の重要な機能である作動角が十分にとれないと
いう問題が生じる。In order to facilitate the manufacture of FRP shafts, it is conceivable that the ends of the shafts are not cylindrical and the yoke portions remain cylindrical without forming a bifurcated yoke at the ends of the shafts. Then
There is a problem that the working angle, which is an important function of the universal joint, cannot be sufficiently obtained.
また、この種の従来のFRP製軸の場合、端部が開放し
ているため、軸内に異物が侵入し、これが異音や振動の
原因となるという問題があった。Further, in the case of this type of conventional FRP shaft, since the end is open, there is a problem that foreign matter enters the shaft and causes abnormal noise and vibration.
この発明の目的は、上記の問題を解決し、軽量で捩り
強度が高く、しかも自在継手の作動角を十分にとること
ができるとともに、内部に異物が侵入するおそれのない
FRP製軸を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to provide a lightweight and high torsional strength, and to obtain a sufficient operating angle of a universal joint, and to prevent foreign matter from entering the inside.
To provide a shaft made of FRP.
課題を解決するための手段 この発明によるFRP製軸は、繊維強化プラスチックに
より円筒状に形成され、十字状ユニバーサルジョイント
部材の対称位置にある２つの軸部の軸受の部分がはまる
穴を有する二股状のヨーク部が端部に一体に形成されて
おり、このヨーク部が形成された端部内面に、このヨー
ク部の穴に対応しかつ軸受の部分がはまる穴を有する二
股状のヨーク部が端部に一体に形成された円筒状のヨー
ク部材が挿入されて固定され、ヨーク部材のヨーク部と
反対側の端部が端壁により閉鎖していることを特徴とす
るものである。Means for Solving the Problems A shaft made of FRP according to the present invention is formed in a cylindrical shape by fiber reinforced plastic, and has a bifurcated shape having a hole into which a bearing portion of two shaft portions at symmetric positions of a cross-shaped universal joint member fits. The yoke portion is formed integrally with the end portion, and a forked yoke portion having a hole corresponding to the hole of the yoke portion and in which the bearing portion fits is formed on the inner surface of the end portion where the yoke portion is formed. A cylindrical yoke member integrally formed with the portion is inserted and fixed, and the end of the yoke member opposite to the yoke portion is closed by an end wall.
作 用 十字状ユニバーサルジョイント部材の対称位置にある
２つの軸部の軸受の部分が、それぞれ、ヨーク部材のヨ
ーク部の穴と軸の端部の穴の両方に跨るように挿入され
る。このため、軸とヨーク部材の両方でトルクを受ける
ことができ、ヨーク部材に端壁が形成されているため、
捩り強度が高く、軸とヨーク部材とが相対的に回転する
ことがない。また、軸の端部にヨーク部材が取付けられ
ているだけであるから、重量の増加が小さく、軽量化が
可能である。The bearing portions of the two shaft portions at the symmetric positions of the cross-shaped universal joint member are inserted so as to straddle both the hole of the yoke portion of the yoke member and the hole of the end of the shaft. Therefore, both the shaft and the yoke member can receive torque, and the end wall is formed on the yoke member,
The torsional strength is high, and the shaft and the yoke member do not rotate relatively. Further, since the yoke member is merely attached to the end of the shaft, the increase in weight is small and the weight can be reduced.
また、軸およびヨーク部材の端部に二股状のヨーク部
が形成されているので、自在継手の作動角を十分にとる
ことができ、しかもヨーク部材のヨーク部と反対側の端
部が端壁により閉鎖されているので、軸内への異物の侵
入が防止される。Further, since the forked yoke portion is formed at the ends of the shaft and the yoke member, the operating angle of the universal joint can be sufficiently set, and the end of the yoke member opposite to the yoke portion has an end wall. , The entry of foreign matter into the shaft is prevented.
実 施 例 以下、図面を参照して、この発明の１実施例を説明す
る。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図および第２図は、ドライブシャフトに使用され
るFRP製軸（１）の一端部を示す。1 and 2 show one end of an FRP shaft (1) used for a drive shaft.
軸（１）の端部に二股状のヨーク部（1a）が一体に形
成され、ヨーク部（1a）には軸（１）の１直径上に位置
する穴（２）が形成されている。A forked yoke (1a) is integrally formed at the end of the shaft (1), and a hole (2) located one diameter above the shaft (1) is formed in the yoke (1a).
軸（１）は、たとえば次のようにして作られる。 The shaft (1) is made, for example, as follows.
まず、軸（１）の内径と等しい外径を有するマンドレ
ルの１直径上に、穴（２）と同じ内径の穴をあけ、これ
らの穴に、同じ外径を有する棒を挿入して、この棒の両
端部をマンドレルから外に突出させる。次に、マンドレ
ルの周囲に繊維を巻き付ける。繊維は、棒の部分で折り
返すようにマンドレルに巻き付け、軸（１）の形にす
る。繊維を巻き付けたならば、これにたとえばエポキシ
樹脂などの熱硬化性樹脂を含浸させて、硬化させる。そ
して、樹脂が硬化したならば、棒を抜き取ったのち、マ
ンドレルを抜き取り、軸（１）を完成する。First, a hole having the same inner diameter as the hole (2) is formed on one diameter of a mandrel having an outer diameter equal to the inner diameter of the shaft (1), and a rod having the same outer diameter is inserted into these holes. Protrude both ends of the rod out of the mandrel. Next, the fiber is wrapped around the mandrel. The fiber is wrapped around the mandrel so that it is folded back at the bar, forming the shaft (1). After the fiber is wound, the fiber is impregnated with a thermosetting resin such as an epoxy resin and cured. When the resin has hardened, the rod is extracted, and then the mandrel is extracted to complete the shaft (1).
ヨーク部（1a）が形成された軸（１）の端部に、第３
図に示すようなプラスチック製もしくはFRP製または金
属製の円筒状のヨーク部材（３）が挿入されて固定され
ている。At the end of the shaft (1) on which the yoke (1a) is formed, a third
A cylindrical yoke member (3) made of plastic, FRP or metal as shown in the figure is inserted and fixed.
ヨーク部材（３）の一端部に二股状のヨーク部（3a）
が一体に形成され、他端部は端壁（3b）により閉鎖され
ている。ヨーク部材（３）のヨーク部（3a）は、軸１の
ヨーク部（1a）と同じ形状に形成され、これには、軸
（１）の穴（２）に対応して、ヨーク部（3a）の１直径
上に位置する穴（４）が形成されている。ヨーク部材
（３）は、ヨー部（3a）が軸（１）のヨーク部（1a）と
合致し、穴（４）が軸（１）の穴（２）と合致するよう
に、軸（１）の端部に挿入され、圧入または接着などの
適宜な手段により固定されている。Bifurcated yoke (3a) at one end of yoke member (3)
Are integrally formed, and the other end is closed by an end wall (3b). The yoke portion (3a) of the yoke member (3) is formed in the same shape as the yoke portion (1a) of the shaft 1, and includes a yoke portion (3a) corresponding to the hole (2) of the shaft (1). ), A hole (4) located one diameter above. The yoke member (3) is arranged such that the yaw portion (3a) matches the yoke portion (1a) of the shaft (1) and the hole (4) matches the hole (2) of the shaft (1). ) And fixed by appropriate means such as press-fitting or bonding.
軸（１）およびヨーク部材（３）のヨーク部（1a）
（3a）には、十字状ユニバーサルジョイント部材（５）
が取付けられる。ジョイント部材（５）には４つの軸部
（5a）が十字状に一体に形成され、各軸部（5a）には、
軸（１）およびヨーク部材（３）の穴（２）（４）と外
径の等しいころがり軸受（６）（たとえばニードル軸
受）が取付けられている。そして、対称位置にある２つ
の軸部（5a）の軸受（６）の部分が、それぞれ、ヨーク
部材（３）の穴（４）と軸（１）の穴（２）の両方に跨
るように挿入される。Yoke part (1a) of shaft (1) and yoke member (3)
(3a) has a cross-shaped universal joint member (5)
Is attached. Four shaft portions (5a) are integrally formed in a cross shape on the joint member (5), and each shaft portion (5a) includes:
A roller bearing (6) (for example, a needle bearing) having the same outer diameter as the shaft (1) and the holes (2) and (4) of the yoke member (3) is mounted. Then, the portions of the bearings (6) of the two shaft portions (5a) at the symmetric positions respectively straddle both the hole (4) of the yoke member (3) and the hole (2) of the shaft (1). Inserted.
図示は省略したが、ジョイント部材（５）の残りの２
つの軸部（5a）は、他の軸の端部に同様に連結され、こ
れにより、ユニバーサルジョイントが構成される。ま
た、軸（１）の反対側の端部にも、必要に応じて、同様
のヨーク部（1a）を形成することができる。Although not shown, the remaining 2 of the joint member (5) is not shown.
One shaft (5a) is likewise connected to the end of the other shaft, which constitutes a universal joint. Further, a similar yoke portion (1a) can be formed at the opposite end of the shaft (1) as necessary.
上記の軸（１）では、ジョイント部材（５）の軸部
（5a）の軸受（６）の部分が、それぞれ、ヨーク部材
（３）の穴（４）と軸（１）の穴（２）の両方に跨るよ
うに挿入されるため、軸（１）とヨーク部材（３）の両
方でトルクを受けることができる。このため、捩り強度
が高く、軸（１）とヨーク部材（３）とが相対的に回転
することがない。また、軸（１）の端部にヨーク部材
（３）が取付けられているだけであるから、重量の増加
が小さく、軽量化が可能である。さらに、ヨーク部材
（３）のヨーク部（3a）と反対側の端部が端壁（3b）に
よって閉鎖されているので、軸（１）内への異物の侵入
を確実に防止することができる。In the shaft (1), the bearing (6) of the shaft (5a) of the joint member (5) corresponds to the hole (4) of the yoke member (3) and the hole (2) of the shaft (1), respectively. Is inserted so as to straddle both of them, so that both the shaft (1) and the yoke member (3) can receive torque. Therefore, the torsional strength is high, and the shaft (1) and the yoke member (3) do not relatively rotate. Further, since only the yoke member (3) is attached to the end of the shaft (1), the increase in weight is small and the weight can be reduced. Furthermore, since the end of the yoke member (3) opposite to the yoke (3a) is closed by the end wall (3b), it is possible to reliably prevent foreign matter from entering the shaft (1). .
発明の効果 この発明のFRP製軸によれば、上述のように、捩り強
度が高く、かつ軽量化が可能である。Effect of the Invention According to the FRP shaft of the present invention, as described above, the torsional strength is high and the weight can be reduced.
また、自在継手の作動角を十分にとることができると
ともに、軸内への異物の侵入を防止することができ、し
たがって、異物による異音や振動が発生するおそれがな
い。Further, the working angle of the universal joint can be sufficiently set, and foreign matter can be prevented from entering the shaft. Therefore, there is no possibility that abnormal noise or vibration due to the foreign matter is generated.
第１図はこの発明の１実施例を示す繊維強化プラスチッ
ク製軸の端部の部分切欠き側面図、第２図は第１図II−
II線の断面図、第３図はヨーク部材の斜視図である。 （１）……繊維強化プラスチック製軸、（1a）……ヨー
ク部、（２）……穴、（３）……ヨーク部材、（3a）…
…ヨーク部、（3b）……端壁、（４）……穴、（５）…
…十字状ユニバーサルジョイント部材、（5a）……軸
部、（６）……軸受。FIG. 1 is a partially cutaway side view of an end of a fiber reinforced plastic shaft showing one embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional view taken along the line II, and FIG. 3 is a perspective view of the yoke member. (1) ... shaft made of fiber-reinforced plastic, (1a) ... yoke, (2) ... hole, (3) ... yoke member, (3a) ...
... Yoke part, (3b) ... End wall, (4) ... Hole, (5) ...
... Cross-shaped universal joint member, (5a) ... Shaft, (6) ... Bearing.
Claims (1)
され、十字状ユニバーサルジョイント部材の対称位置に
ある２つの軸部の軸受の部分がはまる穴を有する二股状
のヨーク部が端部に一体に形成されており、このヨーク
部が形成された端部内面に、このヨーク部の穴に対応し
かつ軸受の部分がはまる穴を有する二股状のヨーク部が
端部に一体に形成された円筒状のヨーク部材が挿入され
て固定され、ヨーク部材のヨーク部と反対側の端部が端
壁により閉鎖していることを特徴とする繊維強化プラス
チック製軸。1. A bifurcated yoke portion formed in a cylindrical shape of fiber-reinforced plastic and having a hole into which a bearing portion of two shaft portions located at symmetrical positions of a cross-shaped universal joint member is fitted integrally at an end portion. On the inner surface of the end where the yoke is formed, a forked yoke having a hole corresponding to the hole of the yoke and in which the part of the bearing fits is formed in a cylindrical shape integrally with the end. A fiber-reinforced plastic shaft, wherein a yoke member is inserted and fixed, and an end of the yoke member opposite to the yoke portion is closed by an end wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63055464A JP2573861B2 (en) | 1988-03-09 | 1988-03-09 | Fiber reinforced plastic shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63055464A JP2573861B2 (en) | 1988-03-09 | 1988-03-09 | Fiber reinforced plastic shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01228830A JPH01228830A (en) | 1989-09-12 |
| JP2573861B2 true JP2573861B2 (en) | 1997-01-22 |
Family
ID=12999329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63055464A Expired - Lifetime JP2573861B2 (en) | 1988-03-09 | 1988-03-09 | Fiber reinforced plastic shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573861B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3453832B2 (en) * | 1994-02-17 | 2003-10-06 | 株式会社豊田自動織機 | Drive shaft made of fiber reinforced composite material and manufacturing method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1599292A (en) * | 1977-04-28 | 1981-09-30 | Union Carbide Corp | Fibre reinforced resin drive shaft having a universal joint |
| JPS5465242A (en) * | 1977-11-02 | 1979-05-25 | Toray Ind Inc | Hard-fiber resin properller shaft |
-
1988
- 1988-03-09 JP JP63055464A patent/JP2573861B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01228830A (en) | 1989-09-12 |
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