JP2944060B2 - Joint structure between FRP shaft and joint - Google Patents

Joint structure between FRP shaft and joint

Info

Publication number
JP2944060B2
JP2944060B2 JP5127885A JP12788593A JP2944060B2 JP 2944060 B2 JP2944060 B2 JP 2944060B2 JP 5127885 A JP5127885 A JP 5127885A JP 12788593 A JP12788593 A JP 12788593A JP 2944060 B2 JP2944060 B2 JP 2944060B2
Authority
JP
Japan
Prior art keywords
joint
shaft
frp
adhesive
fitting
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
Application number
JP5127885A
Other languages
Japanese (ja)
Other versions
JPH06313437A (en
Inventor
淳司 原田
英男 福田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Toho Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toho Rayon Co Ltd filed Critical Toho Rayon Co Ltd
Priority to JP5127885A priority Critical patent/JP2944060B2/en
Publication of JPH06313437A publication Critical patent/JPH06313437A/en
Application granted granted Critical
Publication of JP2944060B2 publication Critical patent/JP2944060B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7428—Transition metals or their alloys
    • B29C66/74283—Iron or alloys of iron, e.g. steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/75—Shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明はＦＲＰ（Ｆｉｂｅｒ ｒ
ｅｉｎｆｏｒｃｅｄ ｐｌａｓｔｉｃ 繊維強化プラス
チック）製シャフトと継手との接合構造に係り、とくに
中空のＦＲＰ製シャフトの端部に継手を嵌合させて取付
け、接着剤で固着するようにしたＦＲＰ製シャフトと継
手との接合構造に関する。BACKGROUND OF THE INVENTION The present invention relates to an FRP (Fiber r
The present invention relates to a joint structure between a shaft made of einforced plastic (fiber reinforced plastic) and a joint, and in particular, a joint formed by fitting a joint to an end of a hollow FRP shaft and fixing the joint with an adhesive. Related to the joint structure.

【０００２】[0002]

【従来の技術】ＦＲＰは比強度および比剛性に優れた材
料である。しかしＦＲＰ単独で構造材として使用される
ことは少なく、ＦＲＰ同士あるいは異種材料と接合し、
構造部材として使用されることが多い。例えば駆動軸に
ＦＲＰを適用する場合には、ＦＲＰ製のシャフトとこの
シャフトにトルクを伝えるための金属製のフランジ継手
とを接合して使用することになる。2. Description of the Related Art FRP is a material excellent in specific strength and specific rigidity. However, FRP alone is rarely used as a structural material.
Often used as a structural member. For example, when FRP is applied to a drive shaft, a shaft made of FRP and a metal flange joint for transmitting torque to this shaft are joined and used.

【０００３】ＦＲＰ製の中空シャフトに金属製のフラン
ジ継手を接合すると、ＦＲＰ製シャフトの軽量化効果に
よって、危険回転数が高くなるとともに、回転に伴う振
動やブレが減少する等の利点が得られることになる。[0003] When a metal flange joint is joined to a hollow shaft made of FRP, advantages such as an increase in dangerous rotation speed and a reduction in vibration and vibration due to rotation are obtained due to the lightening effect of the shaft made of FRP. Will be.

【０００４】従来の鋼製シャフトと金属製継手とを結合
する場合には、溶接によって接合されていた。溶接法に
よる接合を用いると、高い寸法精度でシャフトと継手と
を接合するとともに、その接合強度も大きくなる。しか
しＦＲＰ製シャフトと異種材料の継手との接合において
は、溶接の手法を用いることができない。そしてＦＲＰ
製シャフトと異種材料の継手との接合においては、寸法
精度が高く、しかも接合強度が高い接合方法が確立され
ていないのが現状である。[0004] Conventional steel shafts and metal joints have been joined by welding. When welding is used, the shaft and the joint are joined with high dimensional accuracy, and the joining strength is increased. However, in joining the FRP shaft and the joint made of dissimilar materials, a welding technique cannot be used. And FRP
At the present time, in the joining of a joint made of a dissimilar material and a shaft made of a different material, a joining method with high dimensional accuracy and high joining strength has not been established at present.

【０００５】ＦＲＰ製シャフトと異種材料の継手との接
合に関しては、例えば特公平４−２４２３号公報に開示
されているように、金属継手の円筒挿入部の端部にリン
グ状の嵌合のきつい部分を設けたものや、特開昭６４−
４９７１９号公報に開示されているように、ＦＲＰ製パ
イプの内径よりも大きな外径を有する継手要素を圧入
し、摩擦力によって接合するようにしたものが提案され
ている。さらには特開平４−９４９２１号公報に開示さ
れているように、圧入嵌合前の継手要素の接合部外周面
の表面粗さおよび圧入嵌合前のシャフトの接合部内径と
継手要素の接合部外径の比をそれぞれ所定の値にしたも
のが提案されている。[0005] With regard to the joining between the FRP shaft and the joint made of dissimilar materials, for example, as disclosed in Japanese Patent Publication No. 4-2423, a ring-shaped fitting is tightly fitted to the end of the cylindrical insertion portion of the metal joint. Parts, and Japanese Patent Application Laid-Open
As disclosed in Japanese Patent Publication No. 49719, a joint element having an outer diameter larger than the inner diameter of an FRP pipe is press-fitted and joined by frictional force. Further, as disclosed in Japanese Patent Application Laid-Open No. 4-94921, the surface roughness of the outer peripheral surface of the joint portion of the joint element before press-fitting, the inner diameter of the joint portion of the shaft before press-fitting and the joint portion of the joint element. Ones in which the ratios of the outer diameters are set to predetermined values have been proposed.

【０００６】接着剤によってＦＲＰ製シャフト１と継手
２とを接合して固着する場合には、図５および図６に示
すように、継手２のフランジ３から突出して設けられて
いる嵌合部４をＦＲＰ製シャフト１内に挿入し、嵌合部
４とＦＲＰ製シャフト１との間に接着剤５を介在させて
固着するようにしている。この場合に必要とする強度を
得るために、所要の接着剤５が充填されるようにＦＲＰ
製シャフト１と継手２との間の接合部の隙間を大きくと
るようにし、嵌合いの緩いものが使用されている。When the FRP shaft 1 and the joint 2 are joined and fixed by an adhesive, as shown in FIGS. 5 and 6, a fitting portion 4 protruding from the flange 3 of the joint 2 is provided. Is inserted into the FRP shaft 1 so that the adhesive 5 is interposed between the fitting portion 4 and the FRP shaft 1 so as to be fixed. In this case, in order to obtain the required strength, the FRP should be filled with the required adhesive 5.
The gap between the joint between the shaft 1 and the joint 2 is made large, and a loose fitting is used.

【０００７】あるいはまた図７および図８に示すよう
に、継手２の嵌合部４の外周面上に周溝６を形成するよ
うにし、これによって嵌合部４の周溝６が形成されてい
ない部分の嵌合いをきつくし、周溝６内に充填されてい
る接着剤５によって継手２をＦＲＰ製シャフト１に接合
するようにしている。Alternatively, as shown in FIGS. 7 and 8, a circumferential groove 6 is formed on the outer peripheral surface of the fitting portion 4 of the joint 2, whereby the circumferential groove 6 of the fitting portion 4 is formed. The fitting of the portion that does not exist is tight, and the joint 2 is joined to the FRP shaft 1 by the adhesive 5 filled in the circumferential groove 6.

【０００８】[0008]

【発明が解決しようとする課題】図５および図６に示す
接合構造は、フランジ継手２の嵌合部４がストレートな
円筒状をした継手２を用いた場合を示しており、接着剤
５を嵌合部４とシャフト１の内周面との間に充填するた
めに、嵌合部の隙間を大きくとるようにしている。しか
しこのような構造によれば、接着剤５の硬化を行なうた
めに加熱すると、接着剤５の粘度が低下して流動し易く
なり、この結果シャフト１と継手２との芯が互いにずれ
た状態で接着されることになる。また接着剤５が流出す
るとシャフト１と継手２との芯ずれとともに、接合部の
強度も低下することになる。The joint structure shown in FIGS. 5 and 6 shows a case where a fitting portion 4 of a flange joint 2 uses a straight cylindrical joint 2 and an adhesive 5 is used. In order to fill the space between the fitting portion 4 and the inner peripheral surface of the shaft 1, a large clearance is provided between the fitting portions. However, according to such a structure, when the adhesive 5 is heated for curing, the viscosity of the adhesive 5 is reduced and the adhesive 5 easily flows, and as a result, the cores of the shaft 1 and the joint 2 are displaced from each other. Will be bonded. When the adhesive 5 flows out, the center of the shaft 1 and the joint 2 are misaligned, and the strength of the joint is also reduced.

【０００９】図７および図８に示すように、周溝６以外
の部分において嵌合部４のシャフト１に対する隙間を小
さくした場合には、ＦＲＰ製シャフト１と継手２との間
の同軸度および真直度が向上することになる。しかるに
継手２をＦＲＰ製シャフト１の中に挿入して嵌合させる
際に、ＦＲＰ製シャフト１の内周面および継手２の嵌合
部４の外周面に塗布されている接着剤が掻き取られ、こ
のために接合部の隙間に残存する接着剤の量が少なくな
る。これによって隙間全体に接着剤が均一かつ十分に行
き届かなくなって嵌合部４とシャフト１の内周面との間
の接合強度が不足するという欠点を生ずる。As shown in FIGS. 7 and 8, when the clearance between the fitting portion 4 and the shaft 1 is reduced in a portion other than the circumferential groove 6, the coaxiality between the FRP shaft 1 and the joint 2 is improved. Straightness will be improved. However, when the joint 2 is inserted into the FRP shaft 1 for fitting, the adhesive applied to the inner peripheral surface of the FRP shaft 1 and the outer peripheral surface of the fitting portion 4 of the joint 2 is scraped off. Therefore, the amount of the adhesive remaining in the gap between the joints is reduced. As a result, there is a disadvantage that the adhesive does not uniformly and sufficiently reach the entire gap, and the bonding strength between the fitting portion 4 and the inner peripheral surface of the shaft 1 is insufficient.

【００１０】すなわち図７および図８に示すように、継
手２の嵌合部４の先端と付根に嵌合いのきつい部分を設
けることによって、精度の高い芯出しが可能になるが、
この場合にも継手２をＦＲＰ製シャフト１の内周面に嵌
合する際に、とくに先端側の嵌合いのきつい部分で嵌合
部４に塗布した接着剤を掻き取ってしまう問題がある。[0010] That is, as shown in FIGS. 7 and 8, by providing a tight fitting portion at the tip and the root of the fitting portion 4 of the joint 2, high-precision centering becomes possible.
Also in this case, when fitting the joint 2 to the inner peripheral surface of the FRP shaft 1, there is a problem that the adhesive applied to the fitting portion 4 is scraped off particularly at a tight fitting portion on the distal end side.

【００１１】従って接着剤を用いてＦＲＰ性シャフトと
継手とを接合する構造において、シャフトと継手との高
い同軸度および真直度を維持し、なおかつ接合部の強度
を高めることが大きな課題になる。Therefore, in a structure in which the FRP shaft and the joint are joined by using an adhesive, it is a major problem to maintain high coaxiality and straightness between the shaft and the joint and to increase the strength of the joint.

【００１２】本発明はこのような問題点に鑑みてなされ
たものであって、大きなトルクを伝達することが可能な
接合強度を有し、かつシャフトの同軸度および真直度に
優れたＦＲＰ製シャフトと継手との接合構造を提供する
ことを目的とするものである。The present invention has been made in view of the above problems, and has an FRP shaft having a joint strength capable of transmitting a large torque and having excellent coaxiality and straightness of the shaft. It is an object of the present invention to provide a joint structure between a joint and a joint.

【００１３】[0013]

【課題を解決するための手段】本発明は、中空のＦＲＰ
製シャフトの端部に継手を嵌合させて取付け、接着剤で
固着するようにしたＦＲＰ製シャフトと継手との接合構
造において、継手のシャフトの端部と嵌合される嵌合部
の先端部と根元部分とに嵌合いのきつい接合部をそれぞ
れ設け、先端部および根元部分に設けられる嵌合のきつ
い接合部の軸線方向の長さがそれぞれ嵌合部の軸線方向
の接着長さの３〜２０％の範囲内とし、嵌合のきつい接
合部の外周面が中空のＦＲＰ製シャフトの内周面に対接
され、しかも嵌合部の先端側の嵌合のきつい接合部には
接着剤が流入できる凹部を周方向に沿って少なくとも３
箇所以上形成し、該３個所以上の凹部の円周方向の長さ
の和を円周長の７０〜９５％の範囲内とし、ＦＲＰ製シ
ャフトの内周面と継手の嵌合部との間に介在される接着
剤によって両者を接合して固定するようにしたＦＲＰ製
シャフトと継手との接合構造に関するものである。SUMMARY OF THE INVENTION The present invention provides a hollow FRP.
In a joint structure between an FRP shaft and a joint in which a joint is fitted to and attached to an end of a shaft made of an FRP and fixed with an adhesive, a tip end of a fitting portion to be fitted to an end of the shaft of the joint And the root portion are provided with tight fitting portions, respectively, and the axial length of the tight fitting portion provided at the distal end portion and the root portion is 3 to 3 times the axial bonding length of the fitting portion, respectively. Within the range of 20%, the outer peripheral surface of the tight fitting joint is brought into contact with the inner peripheral surface of the hollow FRP shaft, and an adhesive is applied to the tight fitting joint on the distal end side of the fitting portion. At least three recesses along the circumference
And the sum of the circumferential lengths of the three or more concave portions is within the range of 70 to 95% of the circumferential length, and the gap between the inner circumferential surface of the FRP shaft and the fitting portion of the joint is formed. The present invention relates to a joint structure between an FRP shaft and a joint in which the two are joined and fixed by an adhesive interposed therebetween.

【００１４】本発明においてＦＲＰ製シャフトとは、強
化繊維とマトリックス樹脂とから構成されるものであ
る。そしてシャフトの使用目的によっては、その曲げ剛
性およびねじり剛性が高く、さらに所要のねじり強度を
有する必要がある。従って強化繊維は、引張り強度およ
び引張り弾性率の高い繊維が望ましく、炭素繊維、ガラ
ス繊維、アラミド繊維、ボロン繊維、セラミック繊維等
の繊維から選ばれる１種あるいは２種以上の組合わせで
使用される。とくに比強度および比剛性に優れ、しかも
軽量化の効果が大きい炭素繊維が好ましい。In the present invention, the FRP shaft is composed of a reinforcing fiber and a matrix resin. Depending on the purpose of use of the shaft, it is necessary that the shaft has high bending rigidity and torsional rigidity and has a required torsional strength. Therefore, the reinforcing fiber is preferably a fiber having a high tensile strength and a high tensile elastic modulus, and is used in one kind or in combination of two or more kinds of fibers such as carbon fiber, glass fiber, aramid fiber, boron fiber and ceramic fiber. . In particular, carbon fibers which are excellent in specific strength and specific rigidity and have a large effect of weight reduction are preferable.

【００１５】またこのような強化繊維によって強化され
るマトリックス樹脂としては、エポキシ樹脂、ビスマレ
イミド樹脂、不飽和ポリエステル樹脂、フェノール樹
脂、ビニールエステル樹脂等の熱硬化性樹脂、ＡＢＳ樹
脂、ポリカーボネート樹脂、ポリエステル樹脂、ポリア
ミド樹脂（ナイロン６、ナイロン６・６、ナイロン６・
１０、ナイロン６・１１、ナイロン６・１２）等の熱可
塑性樹脂が挙げられる。好ましくは取扱い性に優れたエ
ポキシ樹脂や不飽和ポリエステル樹脂が使用される。The matrix resin reinforced by such reinforcing fibers includes thermosetting resins such as epoxy resin, bismaleimide resin, unsaturated polyester resin, phenol resin and vinyl ester resin, ABS resin, polycarbonate resin and polyester. Resin, polyamide resin (nylon 6, nylon 6.6, nylon 6.6
10, nylon 6.11, and nylon 6.12). Preferably, an epoxy resin or an unsaturated polyester resin excellent in handleability is used.

【００１６】ＦＲＰ製シャフトの製造方法は従来公知の
方法で行なわれてよい。生産性および製作コストを考慮
し、フィラメントワインド法やシートワインド法が用い
られてよい。またＦＲＰ製シャフトの強化繊維の体積含
有率は４５〜７０％が好ましい。強化繊維の含有率が４
５％未満の場合には、強化繊維の含有率が低く、シャフ
トの強度および剛性が低くなる。強化繊維の含有率が７
０％を超えると、強化繊維の含有率が高いために、マト
リックス樹脂が含浸せず、かえってシャフトの強度低下
を招く欠点がある。The method of manufacturing the FRP shaft may be performed by a conventionally known method. In consideration of productivity and manufacturing cost, a filament winding method or a sheet winding method may be used. The volume content of the reinforcing fibers of the FRP shaft is preferably 45 to 70%. Reinforced fiber content is 4
If it is less than 5%, the content of reinforcing fibers is low, and the strength and rigidity of the shaft are low. Reinforcing fiber content is 7
If it exceeds 0%, the content of the reinforcing fibers is high, so that the matrix resin is not impregnated, and the strength of the shaft is rather reduced.

【００１７】これに対して継手は、金属、合成樹脂、Ｆ
ＲＰ等で作られたものであってよい。そしてＦＲＰ製シ
ャフトの使用目的に応じて選択される。フランジ継手の
嵌合部の先端側および付根に設けられる嵌合いのきつい
接合部は、先端部においてはその軸線方向の接着長さの
３〜２０％の範囲内とすることが好ましい。嵌合部の先
端側の嵌合いのきつい接合部の長さが３％未満の場合に
は、シャフトと継手とを十分に固定することができず、
しかもシャフトと継手との同軸度を高い精度で得ること
ができない。また嵌合のきつい接合部の軸線方向の長さ
が２０％以上になると重量増加を招く欠点がある。On the other hand, the joint is made of metal, synthetic resin, F
It may be made of RP or the like. The selection is made according to the purpose of use of the FRP shaft. It is preferable that the tight joint portion provided at the distal end side and at the root of the fitting portion of the flange joint be within the range of 3 to 20% of the bonding length in the axial direction at the distal end portion. If the length of the tight joint at the distal end side of the fitting portion is less than 3%, the shaft and the joint cannot be sufficiently fixed,
Moreover, the coaxiality between the shaft and the joint cannot be obtained with high accuracy. Further, when the length of the tightly joined joint in the axial direction is 20% or more, there is a disadvantage that the weight increases.

【００１８】次に継手の嵌合部の根元側の嵌合のきつい
接合部の軸線方向の長さは３〜２０％の範囲内とするこ
とが好ましい。付根部分の嵌合のきつい接合部の長さが
３％未満の場合には、シャフトと継手の嵌合部との固定
を十分に行なうことができず、シャフトと継手との両者
の間の相互の同軸度が得られない。また根元部分の嵌合
のきつい接合部を軸線方向において２０％以上占めるよ
うにすると重量増加および接着面積の低下による強度不
足を招くことになる。Next, the axial length of the tightly joined portion at the base of the fitting portion of the joint is preferably in the range of 3 to 20%. If the length of the tight joint at the root portion is less than 3%, the joint between the shaft and the joint cannot be sufficiently fixed, and the mutual connection between the shaft and the joint cannot be made. Cannot be obtained. Further, if the tightly joined portion at the root portion is occupied by 20% or more in the axial direction, the strength will be insufficient due to an increase in weight and a decrease in the bonding area.

【００１９】フランジ継手の嵌合部先端側の接着剤が流
動できる凹部を有する嵌合いのきつい接合部はＦＲＰ製
シャフトの形状や材質、長さ、外径、内径等を考慮する
とともに、フランジ継手側においても、その形状、材
質、接着長さ等を考慮し、さらには接着強度および破壊
トルクを勘案して形成することになる。The tight joint having a concave portion at the tip end of the fitting portion of the flange joint through which the adhesive can flow can be formed in consideration of the shape, material, length, outer diameter, inner diameter, etc. of the FRP shaft. Also on the side, it is formed in consideration of its shape, material, bonding length and the like, and further, in consideration of bonding strength and breaking torque.

【００２０】またフランジ継手の嵌合部の先端側に設け
られる凹部であって接着剤を流入させる部分は、シャフ
トの回転時のバランスや接着剤の種類、粘度、および接
着力を考慮し、少なくとも３箇所以上設け、また円周長
さの７０〜９５％の範囲内とすることが好ましい。The concave portion provided on the distal end side of the fitting portion of the flange joint, into which the adhesive flows, is formed at least in consideration of the balance during rotation of the shaft, the type of adhesive, the viscosity, and the adhesive force. It is preferable to provide three or more places, and to set the range of 70 to 95% of the circumferential length.

【００２１】本発明の実施例におけるフランジ継手の嵌
合部は図１〜図４に示すように中実であるが、中空の継
手をも目的に応じて使用するようにしてもよい。Although the fitting portion of the flange joint in the embodiment of the present invention is solid as shown in FIGS. 1 to 4, a hollow joint may be used according to the purpose.

【００２２】本発明において用いられる接着剤は液状タ
イプのものが好ましい。粘度はシャフトの中に継手を挿
入する際の潤滑性、作業性、および硬化時の粘度等を考
慮し、室温で１００〜１０００ポイズの範囲のものを使
用することが好ましい。接着剤としては例えばアラルダ
イト（チバ・ガイギー社製）、ソニーボンド（ソニーケ
ミカル（株）製）、スリーロイ（スリーボンド社製）等
が挙げられる。The adhesive used in the present invention is preferably of a liquid type. The viscosity is preferably in the range of 100 to 1000 poise at room temperature in consideration of lubricity at the time of inserting the joint into the shaft, workability, viscosity at the time of curing, and the like. Examples of the adhesive include Araldite (manufactured by Ciba-Geigy), Sony Bond (manufactured by Sony Chemical Co., Ltd.), and Three Roy (manufactured by Three Bond).

【００２３】本発明による接合構造によれば、継手の嵌
合部の先端部と根元部分とにそれぞれ設けられる嵌合の
きつい接合部によって、接着剤の硬化時に生ずる熱膨張
率の違いから、この嵌合いのきつい接合部の箇所でシャ
フトを継手に固定し、シャフトと継手との間の相互の同
軸度と高い真直度とが得られることになる。According to the joint structure of the present invention, due to the difference in the coefficient of thermal expansion that occurs when the adhesive is hardened due to the tight joints provided at the distal end portion and the root portion of the joint portion of the joint. The shaft is fixed to the joint at the point where the fitting is tight, so that mutual coaxiality and high straightness between the shaft and the joint can be obtained.

【００２４】とくに継手の嵌合部の先端側の嵌合のきつ
い接合部に接着剤が流入できる凹部を周方向に沿って少
なくとも３箇所以上設けることによって、継手の嵌合部
をシャフトに挿入する際における接着剤の掻き取りが解
消されることになる。すなわち継手の嵌合部の外周側で
あってシャフトの内周面との間に接着剤が均一に導入さ
れるようになり、これによってシャフトと継手とが強固
に接着され、高い接着強度を有することが可能になる。
なお本発明におけるＦＲＰ製シャフトとは、例えば駆動
軸、車軸、巻取りシャフト等であってよい。In particular, by providing at least three or more concave portions along the circumferential direction at which the adhesive can flow into the tightly joined portion on the distal end side of the fitting portion of the joint, the fitting portion of the joint is inserted into the shaft. In this case, scraping of the adhesive is eliminated. That is, the adhesive is uniformly introduced between the outer peripheral side of the fitting portion of the joint and the inner peripheral surface of the shaft, whereby the shaft and the joint are firmly adhered to each other, and have high adhesive strength. It becomes possible.
The FRP shaft in the present invention may be, for example, a drive shaft, an axle, a winding shaft, or the like.

【００２５】[0025]

【実施例】実施例１ 高強度炭素繊維束（７μｍ×１２０００本 東邦レーヨ
ン（株）製ベスファイト（登録商標））にビスフェノー
ル型エポキシ樹脂を３５重量％含浸させたものをフィラ
メントワインド法により、マンドレル上に９０°／＋４
５°／−４５°／０°の構成で積層する。この後に加熱
硬化させて内径が６０ｍｍであって、外径が７０ｍｍで
あり、しかも長さが１０００ｍｍのＣＦＲＰ（Ｃａｒｂ
ｏｎ ｆｉｂｅｒ ｒｅｉｎｆｏｒｃｅｄ ｐｌａｓｔ
ｉｃ 炭素繊維強化樹脂）製の中空のシャフトを得た。
このシャフトは図１および図３において参照符号１１で
示されている。 Example 1 A mandrel obtained by impregnating a high-strength carbon fiber bundle (7 μm × 12,000 vesfite (registered trademark) manufactured by Toho Rayon Co., Ltd.) with 35% by weight of a bisphenol-type epoxy resin by a filament winding method. 90 ° / + 4 on
The layers are laminated in a configuration of 5 ° / −45 ° / 0 °. Thereafter, it is heat-cured to obtain a CFRP (Carb) having an inner diameter of 60 mm, an outer diameter of 70 mm, and a length of 1000 mm.
on fiber reinforced blast
ic carbon fiber reinforced resin).
This shaft is designated by the reference numeral 11 in FIGS.

【００２６】このようなＣＦＲＰ製シャフト１１の両端
の内面に挿入する鋼製の継手１２を用意した。継手１２
はフランジ１６の中心部に突出するように嵌合部１７を
備えており、しかもこの嵌合部１７の先端部と根元部分
とにはそれぞれ嵌合のきつい接合部１８、１９が形成さ
れるようになっている。そして先端側の接合部１８と根
元側の接合部１９との間の部分が周溝２０から構成され
ている。また先端側の接合部１８上には、円周方向に沿
って４箇所に凹部２１を形成するようにしている。なお
この凹部２１の底面は周溝２０と連続している。A steel joint 12 to be inserted into the inner surfaces of both ends of the CFRP shaft 11 was prepared. Fitting 12
Is provided with a fitting portion 17 so as to protrude from the center of the flange 16, and tight fitting portions 18 and 19 are formed at the distal end portion and the root portion of the fitting portion 17, respectively. It has become. A portion between the joint portion 18 on the distal end side and the joint portion 19 on the base side is constituted by a circumferential groove 20. Further, on the joint portion 18 on the distal end side, concave portions 21 are formed at four places along the circumferential direction. Note that the bottom surface of the concave portion 21 is continuous with the peripheral groove 20.

【００２７】ここで継手１２の嵌合部１７の先端部に設
けられている接合部１８の凹部２１は、接着剤を流入さ
せるためのものであって、図２に示すようにその円周方
向の角度θが７０°になるように形成されており、この
ような７０°の角度を有する凹部２１を円周方向に沿っ
て所定の間隔で４箇所に設けるようにしている。しかも
嵌合部１７の軸線方向の長さを１００ｍｍとし、その先
端部および根元部分にそれぞれ形成されている接合部１
８、１９の軸線方向の長さをそれぞれ１０ｍｍとしてい
る。Here, the concave portion 21 of the joint portion 18 provided at the distal end portion of the fitting portion 17 of the joint 12 is for allowing the adhesive to flow in, and as shown in FIG. Is formed to be 70 °, and the concave portions 21 having such an angle of 70 ° are provided at four locations at predetermined intervals along the circumferential direction. Moreover, the length of the fitting portion 17 in the axial direction is set to 100 mm, and the joining portions 1 formed at the distal end portion and the root portion thereof are respectively formed.
The length in the axial direction of each of 8 and 19 is 10 mm.

【００２８】このようにして外径が６０ｍｍであって接
着剤の厚みが０．１ｍｍになるように凹部２１を有する
フランジ継手１２を製作した。この場合において嵌合部
１７の円周上において嵌合いのきつい接合部１８の占め
る部分は２２％であり、凹部２１が占める部分は７８％
である。Thus, the flange joint 12 having the concave portion 21 was manufactured so that the outer diameter was 60 mm and the thickness of the adhesive was 0.1 mm. In this case, the portion occupied by the tight fitting portion 18 on the circumference of the fitting portion 17 is 22%, and the portion occupied by the concave portion 21 is 78%.
It is.

【００２９】次に上記ＣＦＲＰ製シャフト１１の内面お
よびフランジ継手１２の嵌合部１７の外周面にそれぞれ
アラルダイトＡＷ１３６Ｎ、ハードナーＨＹ９４４（チ
バ・ガイギー社製）を１０：４の割合で配合した接着剤
を直接塗布した後に、ＣＦＲＰ製シャフトの内面にフラ
ンジ継手１２の嵌合部１７を挿入し、８０℃で３０分間
硬化を行なった。Next, an adhesive prepared by mixing Araldite AW136N and HARDNER HY944 (manufactured by Ciba Geigy) in a ratio of 10: 4 to the inner surface of the CFRP shaft 11 and the outer peripheral surface of the fitting portion 17 of the flange joint 12 respectively. After the direct application, the fitting portion 17 of the flange joint 12 was inserted into the inner surface of the CFRP shaft and cured at 80 ° C. for 30 minutes.

【００３０】このようにＣＦＲＰ製シャフトの両端に鋼
製フランジ継手１２を接合したＣＦＲＰ製シャフトをね
じり試験に供した結果、両者の接合部は６８０ｋｇｆ・
ｍのトルクで破壊した。As a result of subjecting the CFRP shaft in which the steel flange joint 12 was joined to both ends of the CFRP shaft to the torsion test as described above, the joint portion between the two was 680 kgf ·
It broke with a torque of m.

【００３１】実施例２ 実施例１に記載した方法と同様な方法で製作したＣＦＲ
Ｐ製シャフト１１と、鋼製フランジ継手１２との接合を
行なった。用いたフランジ継手１２は実施例１に記載の
フランジ継手１２とは嵌合部１７の先端側に設けられた
嵌合いのきつい接合部１８の数と凹部２１の大きさが異
なっている。 Example 2 A CFR manufactured by a method similar to the method described in Example 1.
The P shaft 11 and the steel flange joint 12 were joined. The used flange joint 12 is different from the flange joint 12 described in the first embodiment in the number of tight fitting portions 18 provided on the distal end side of the fitting portion 17 and the size of the concave portion 21.

【００３２】ここでは接着剤が流入する凹部２１を円周
方向に沿って図４に示すように等間隔で３箇所設けてい
る。そしてこの凹部２１の円周方向の角度θを９０°に
した。なおＣＦＲＰ製シャフト１１と継手１２との嵌合
い寸法および接着剤の種類、硬化条件等は実施例１と同
様に行ない、両端に鋼製フランジ継手１２を接合したＣ
ＦＲＰ製シャフト１１を得た。なおこの場合の円周方向
に占める嵌合部１７の先端側の嵌合いのきつい接合部１
８の割合は２５％であって、凹部２１の占める割合は７
５％になっている。Here, three concave portions 21 into which the adhesive flows are provided at equal intervals along the circumferential direction as shown in FIG. The angle θ in the circumferential direction of the recess 21 was set to 90 °. The fitting dimensions of the CFRP shaft 11 and the joint 12, the type of adhesive, the curing conditions, etc. were the same as in Example 1, and the steel flange joint 12 was joined to both ends.
An FRP shaft 11 was obtained. In this case, the tightly-fitted joint 1 on the distal end side of the fitting 17 occupying the circumferential direction.
The ratio of 8 is 25%, and the ratio of the recess 21 is 7%.
It is 5%.

【００３３】このようなＣＦＲＰ製シャフト１１を上記
実施例１と同様のねじり試験に供した結果、６６５ｋｇ
ｆ・ｍのトルクで両者の接合部が破壊した。The CFRP shaft 11 was subjected to the same torsion test as in the first embodiment.
Both joints were broken by a torque of fm.

【００３４】比較例１ 図５および図６に示す従来の接合構造により、実施例１
と同様にして得られたＣＦＲＰ製シャフト１を用い、嵌
合いのきつい部分および樹脂が流入する凹部を設けてい
ない平滑な嵌合部４を有する継手２をシャフト１内に挿
入して接合した。COMPARATIVE EXAMPLE 1 The conventional joint structure shown in FIG. 5 and FIG.
Using a CFRP shaft 1 obtained in the same manner as described above, a joint 2 having a smooth fitting portion 4 without a tight fitting portion and a concave portion into which resin flows is inserted into the shaft 1 and joined.

【００３５】なおＣＦＲＰ製シャフト１とフランジ継手
２との嵌合い寸法および接着剤の種類、硬化条件等は上
記実施例１と同様にして実施した。得られたＣＦＲＰ製
シャフト１をねじり試験に供したが、シャフト１と継手
２との同軸度が不十分で、かつ真直度が十分に得られて
いないために、強度試験に供することができなかった。The fitting dimensions of the CFRP shaft 1 and the flange joint 2, the type of adhesive, the curing conditions, and the like were the same as those in the first embodiment. Although the obtained CFRP shaft 1 was subjected to a torsion test, it could not be subjected to a strength test because the coaxiality between the shaft 1 and the joint 2 was insufficient and the straightness was not sufficiently obtained. Was.

【００３６】比較例２ 図７および図８に示す接合構造において、実施例１と同
様の方法でＣＦＲＰ製シャフト１を製作し、嵌合部４に
接着剤が流入する凹部を設けていない構造の継手２をシ
ャフト１の端部に接合した。なおＣＦＲＰ製シャフト１
とフランジ継手２との嵌合い寸法および接着剤の種類、
硬化条件等は実施例１と同様にした。 Comparative Example 2 In the joint structure shown in FIGS. 7 and 8, a CFRP shaft 1 was manufactured in the same manner as in Example 1, and the fitting portion 4 was not provided with a concave portion into which the adhesive flows. The joint 2 was joined to the end of the shaft 1. CFRP shaft 1
Dimensions of the fitting between the flange joint 2 and the type of adhesive,
The curing conditions were the same as in Example 1.

【００３７】このような方法によると、嵌合部４の先端
部に接着剤が流入する凹部が設けられていないために、
接着剤の一部が掻き取られた。得られたＣＦＲＰ製シャ
フト１を実施例１と同様にねじり試験した結果、５６０
ｋｇｆ・ｍのトルクで接合部分が破壊した。According to such a method, since the concave portion into which the adhesive flows is not provided at the distal end portion of the fitting portion 4,
Part of the adhesive was scraped off. The obtained CFRP shaft 1 was subjected to a torsion test in the same manner as in Example 1, and the result was 560.
The joint was broken by the torque of kgfm.

【００３８】[0038]

【発明の効果】以上のように本発明は、継手のシャフト
の端部と嵌合される嵌合部の先端部と根元部分とに嵌合
いのきつい接合部をそれぞれ設け、先端部および根元部
分に設けられる嵌合のきつい接合部の軸線方向の長さが
それぞれ嵌合部の軸線方向の接着長さの３〜２０％の範
囲内とし、嵌合のきつい接合部の外周面が中空のＦＲＰ
製シャフトの内周面に対接され、しかも嵌合部の先端側
の嵌合のきつい接合部には接着剤が流入できる凹部を周
方向に沿って少なくとも３箇所以上形成し、該３個所以
上の凹部の円周方向の長さの和を円周長の７０〜９５％
の範囲内としたものである。As described above, according to the present invention, a tight fitting portion is provided at the distal end portion and the root portion of the fitting portion fitted to the end portion of the shaft of the joint, and the distal end portion and the root portion are provided. The axial length of the tightly fitting joints provided in each case is within a range of 3 to 20% of the axially bonded length of the fitting portions, and the outer peripheral surface of the tightly fitting joint is a hollow FRP.
At least three or more concave portions along the circumferential direction are formed at the tightly joined joint portion on the distal end side of the fitting portion, which is in contact with the inner peripheral surface of the shaft made of a product, and is formed at least at three or more locations. The sum of the circumferential lengths of the concave portions is 70 to 95% of the circumferential length.
Is within the range.

【００３９】従って嵌合部の先端部と根元部分とにそれ
ぞれ形成され、嵌合部の軸線方向の接着長さの３〜２０
％の範囲内の嵌合のきつい接合部が中空のＦＲＰ製シャ
フトの内周面に対接された状態で、ＦＲＰ製シャフトと
継手との相対的な同軸度と真直度とを高い精度で実現す
ることが可能になる。従ってＦＲＰ製シャフトに対して
その端部に継手を高精度の同軸度と真直度とを維持しな
がら固定することが可能になる。しかも嵌合部の先端部
の接合部の外周面に周方向に沿って少なくとも３個所以
上形成されており、これら３個所以上の凹部の円周方向
の長さの和が円周長の７０〜９５％の範囲内の凹部によ
って接着剤が先端部の嵌合のきつい接合部間の凹部を通
って先端部の接合部と根元部分の接合部との間に侵入す
ることができるようになる。すなわち継手をＦＲＰ製シ
ャフトに嵌合させる際に、このシャフトの内面と継手の
嵌合部の外周面上に塗布された接着剤の掻き取りを防止
し、これによってＦＲＰ製シャフトの内面に継手を均一
にかつ強固に接着して固着できるようになる。とくに継
手の嵌合部の先端部と根元部分とにそれぞれ形成されて
いる嵌合のきつい接合部間に十分な接着剤を供給してＦ
ＲＰ製シャフトに対して継手を強固に接着して結合する
ことが可能になる。従って本発明によれば、寸法精度に
優れ、しかも高い接着強度を保持した接合が可能にな
り、高速回転での使用、もしくは高トルクの伝達を行な
う個所での接着接合において非常に有利なＦＲＰ製シャ
フトと継手との接合構造が得られることになる。Accordingly, the bonding length in the axial direction of the fitting portion is formed at the distal end portion and the root portion of the fitting portion, respectively.
% With a high degree of accuracy in the relative coaxiality and straightness between the FRP shaft and the joint, with the tightly fitting joint in the range of% being in contact with the inner peripheral surface of the hollow FRP shaft. It becomes possible to do. Therefore, the joint can be fixed to the end of the FRP shaft while maintaining high-precision coaxiality and straightness. Moreover, at least three or more portions are formed along the circumferential direction on the outer peripheral surface of the joint portion at the distal end portion of the fitting portion, and the sum of the circumferential lengths of the three or more concave portions is 70 to 70 of the circumferential length. Recesses in the range of 95% allow adhesive to penetrate between the joints at the tip and the root through the recesses between the tight fitting joints at the tip. That is, when the joint is fitted to the FRP shaft, the adhesive applied to the inner surface of the shaft and the outer peripheral surface of the fitting portion of the joint is prevented from being scraped off, whereby the joint is attached to the inner surface of the FRP shaft. It becomes possible to adhere and fix uniformly and firmly. In particular, a sufficient amount of adhesive is supplied between tight fitting joints formed at the distal end portion and the root portion of the fitting portion of the joint so that the F
The joint can be firmly bonded to the RP shaft and bonded. Therefore, according to the present invention, it is possible to join with excellent dimensional accuracy and high adhesive strength, and it is very advantageous to use FRP at a high speed rotation or in an adhesive joint at a place where high torque is transmitted. A joint structure between the shaft and the joint is obtained.

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

【図１】第１の実施例の接合構造を示す分解斜視図であ
る。FIG. 1 is an exploded perspective view showing a joining structure of a first embodiment.

【図２】継手の正面図である。FIG. 2 is a front view of a joint.

【図３】接続構造を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a connection structure.

【図４】第２の実施例の継手の正面図である。FIG. 4 is a front view of a joint according to a second embodiment.

【図５】従来の接続構造を示す斜視図である。FIG. 5 is a perspective view showing a conventional connection structure.

【図６】従来の接続構造を示す縦断面図である。FIG. 6 is a longitudinal sectional view showing a conventional connection structure.

【図７】別の従来の接続構造を示す斜視図である。FIG. 7 is a perspective view showing another conventional connection structure.

【図８】別の従来の接続構造を示す縦断面図である。FIG. 8 is a longitudinal sectional view showing another conventional connection structure.

【符号の説明】[Explanation of symbols]

１ ＦＲＰ製シャフト ２ 継手 ３ フランジ ４ 嵌合部 ５ 接着剤 ６ 周溝 １１ ＦＲＰ製シャフト １２ 継手 １３ 貫通穴 １６ フランジ １７ 嵌合部 １８、１９ 接合部 ２０ 周溝 ２１ 凹部 ２５ 接着剤 DESCRIPTION OF SYMBOLS 1 FRP shaft 2 Joint 3 Flange 4 Fitting part 5 Adhesive 6 Peripheral groove 11 FRP shaft 12 Joint 13 Through hole 16 Flange 17 Fitting part 18, 19 Joint part 20 Peripheral groove 21 Depression 25 Adhesive

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｌ 31:06 (56)参考文献 特開 平１−216108（ＪＰ，Ａ) 特開 平１−131312（ＪＰ，Ａ) 特開 昭59−219511（ＪＰ，Ａ) 特開 昭53−77957（ＪＰ，Ａ) 特開 昭49−20563（ＪＰ，Ａ) 実開 平３−93186（ＪＰ，Ｕ) 実開 昭62−50316（ＪＰ，Ｕ) 特公 平４−2423（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) F16D 1/02 F16B 11/00 ────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification symbol FIB29L 31:06 (56) References JP-A 1-216108 (JP, A) JP-A 1-1131212 (JP, A) JP-A-59-219511 (JP, A) JP-A-53-77957 (JP, A) JP-A-49-20563 (JP, A) JP-A-3-93186 (JP, U) JP-A 62-50316 (JP, A) JP, U) JP-B 4-2423 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) F16D 1/02 F16B 11/00

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 中空のＦＲＰ製シャフトの端部に継手を
嵌合させて取付け、接着剤で固着するようにしたＦＲＰ
製シャフトと継手との接合構造において、 前記継手の前記シャフトの端部と嵌合される嵌合部の先
端部と根元部分とに嵌合いのきつい接合部をそれぞれ設
け、 前記先端部および根元部分に設けられる嵌合のきつい接
合部の軸線方向の長さがそれぞれ前記嵌合部の軸線方向
の接着長さの３〜２０％の範囲内とし、前記嵌合のきつ
い接合部の外周面が前記中空のＦＲＰ製シャフトの内周
面に対接され、しかも前記嵌合部の先端側の嵌合のきつ
い接合部には接着剤が流入できる凹部を周方向に沿って
少なくとも３箇所以上形成し、該３個所以上の凹部の円
周方向の長さの和を円周長の７０〜９５％の範囲内とし
たことを特徴とするＦＲＰ製シャフトと継手との接合構
造。An FRP in which a joint is fitted and attached to an end of a hollow FRP shaft, and is fixed with an adhesive.
In the joint structure between the shaft and the joint, a tight joint is provided at a distal end portion and a root portion of a fitting portion fitted to an end portion of the shaft of the joint, and the distal end portion and the root portion are provided. The length of each of the tightly joined joints provided in the axial direction is within a range of 3 to 20% of the length of the bonded portion in the axial direction of each of the fitted parts, and the outer peripheral surface of the tightly joined joint is At least three or more concave portions along the circumferential direction are formed along the circumferential direction at the tightly joined joint portion at the distal end side of the fitting portion, which is in contact with the inner peripheral surface of the hollow FRP shaft, A joint structure between an FRP shaft and a joint, wherein a sum of circumferential lengths of the three or more concave portions is in a range of 70 to 95% of the circumferential length. 【請求項２】 前記継手が金属、合成樹脂、ＦＲＰの何
れかから作られていることを特徴とする請求項１に記載
のＦＲＰ製シャフトと継手との接合構造。2. The joint structure between an FRP shaft and a joint according to claim 1, wherein the joint is made of any one of a metal, a synthetic resin, and FRP.
JP5127885A 1993-04-28 1993-04-28 Joint structure between FRP shaft and joint Expired - Fee Related JP2944060B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5127885A JP2944060B2 (en) 1993-04-28 1993-04-28 Joint structure between FRP shaft and joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5127885A JP2944060B2 (en) 1993-04-28 1993-04-28 Joint structure between FRP shaft and joint

Publications (2)

Publication Number Publication Date
JPH06313437A JPH06313437A (en) 1994-11-08
JP2944060B2 true JP2944060B2 (en) 1999-08-30

Family

ID=14971064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5127885A Expired - Fee Related JP2944060B2 (en) 1993-04-28 1993-04-28 Joint structure between FRP shaft and joint

Country Status (1)

Country Link
JP (1) JP2944060B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5492456B2 (en) * 2009-05-28 2014-05-14 アロン化成株式会社 Pipe repair connecting member

Also Published As

Publication number Publication date
JPH06313437A (en) 1994-11-08

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