JP4584077B2 - Shaft coupling - Google Patents

Shaft coupling Download PDF

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Publication number
JP4584077B2
JP4584077B2 JP2005251230A JP2005251230A JP4584077B2 JP 4584077 B2 JP4584077 B2 JP 4584077B2 JP 2005251230 A JP2005251230 A JP 2005251230A JP 2005251230 A JP2005251230 A JP 2005251230A JP 4584077 B2 JP4584077 B2 JP 4584077B2
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Japan
Prior art keywords
ball
set ring
drive shaft
shaft
coupling
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JP2007064361A (en
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康昭 武川
正治 加藤
圭治 柳田
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NTN Corp
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NTN Corp
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    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F16D1/116—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections
    • 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
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22326—Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
    • 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
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/226—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part
    • F16D3/227—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Description

この発明は、駆動軸に対して被駆動軸を着脱自在に連結する軸継手に関するものである。   The present invention relates to a shaft coupling that detachably connects a driven shaft to a driving shaft.

一般に、トラクタには、草刈り機や播種機等の各種作業機械が着脱自在に連結される。各種の作業機械はトラクタにより牽引されるため、トラクタの駆動軸と作業機械の被駆動軸は相対的に角度を取って動力伝達されることになる。そのため、作業機械の被駆動軸にユニバーサルジョイントや等速ジョイントを接続し、そのジョイントをトラクタの駆動軸に対して着脱するようにしている。   Generally, various working machines such as a mower and a seeder are detachably connected to the tractor. Since various work machines are pulled by a tractor, the drive shaft of the tractor and the driven shaft of the work machine are transmitted at an angle relative to each other. Therefore, a universal joint or a constant velocity joint is connected to the driven shaft of the work machine, and the joint is attached to and detached from the driving shaft of the tractor.

上記ジョイントと駆動軸の着脱の容易化を図るため、特許文献１に記載された軸継手においては、ユニバーサルジョイントのヨーク基部に半径方向に貫通する貫通孔を形成し、その貫通孔内に駆動軸の端部に形成された周方向の係合溝に対して係合可能なボールを組込み、前記ヨーク基部の外側にはセットリングと、そのセットリングを軸方向に付勢するばねとを設け、上記セットリングの軸方向の移動によりボールの径方向への移動を制御し、上記ボールの径方向外方への移動を自由とする状態で駆動軸とユニバーサルジョイントの着脱を行なうようにしている。
特許第３０４０９３６号公報 In order to facilitate the attachment and detachment of the joint and the drive shaft, in the shaft joint described in Patent Document 1, a through hole penetrating in the radial direction is formed in the yoke base portion of the universal joint, and the drive shaft is formed in the through hole. A ball that can be engaged with a circumferential engagement groove formed at the end of the yoke is incorporated, and a set ring and a spring that urges the set ring in the axial direction are provided outside the yoke base, The movement of the ball in the radial direction is controlled by the movement of the set ring in the axial direction, and the drive shaft and the universal joint are attached and detached while the movement of the ball in the radial direction is free.
Japanese Patent No. 3040936

ところで、従来の軸継手においては、上記のように、セットリングの軸方向の移動によってボールの径方向への移動を制御する構成であるため、ヨーク基部の外径面上にセットリングを軸方向に移動させるためのスライドスペースを確保しなければならず、軸継手の軸方向長さが長くなるという不都合がある。   By the way, in the conventional shaft coupling, as described above, since the movement of the ball in the radial direction is controlled by the movement of the set ring in the axial direction, the set ring is axially arranged on the outer diameter surface of the yoke base. There is a disadvantage in that a slide space for moving the shaft joint must be secured, and the axial length of the shaft coupling becomes long.

この発明の課題は、駆動軸とジョイントとを着脱自在に連結する軸継手の軸方向長さのコンパクト化を図ることである。   An object of the present invention is to reduce the axial length of a shaft coupling that detachably connects a drive shaft and a joint.

上記の課題を解決するため、この発明においては、駆動軸とジョイントの端部に設けられた筒状カップリング部とをスプラインを介して着脱自在に連結する軸継手において、前記駆動軸の端部外周に周方向に延びる係合溝を形成し、前記カップリング部には半径方向に貫通する貫通孔を設け、その貫通孔内に前記係合溝に係合可能なボールを組込み、前記カップリング部の外側に嵌合された回転可能なセットリングの内周に周方向に延びて前記ボールを係合溝に係合する状態に保持する保持溝と、その保持溝の周方向一端に連続して前記係合溝から外れる位置まで前記ボールの径方向外方への移動を許容する切欠部とを設け、前記保持溝の周方向他端がボールに当接する方向に向けてセットリングに回転力を付与する捩りコイルばねを設けた構成を採用したのである。   In order to solve the above problems, in the present invention, in the shaft coupling that detachably connects the drive shaft and the cylindrical coupling portion provided at the end of the joint via a spline, the end of the drive shaft An engagement groove extending in the circumferential direction is formed on the outer periphery, and a through-hole penetrating in the radial direction is provided in the coupling portion, and a ball engageable with the engagement groove is incorporated in the through-hole, and the coupling A holding groove that extends circumferentially on the inner periphery of the rotatable set ring fitted to the outside of the portion and holds the ball in a state of engaging with the engaging groove, and is continuous with one end in the circumferential direction of the holding groove. A notch that allows the ball to move radially outward to a position disengaged from the engagement groove, and a rotational force is applied to the set ring in a direction in which the other circumferential end of the holding groove contacts the ball. Provided with a torsion coil spring It was adopted formed.

ここで、セットリングを繊維強化プラスチックによって成形することにより、軸継手の軽量化を図ることができると共に、錆の発生がないため、耐久性の向上を図ることができる。   Here, by forming the set ring with fiber reinforced plastic, the weight of the shaft joint can be reduced, and since rust is not generated, the durability can be improved.

また、切欠部の保持溝側の壁面を、その保持溝側に傾斜するテーパ面とすると、切欠部がボールと対向する状態から捩りコイルばねの弾性によりセットリングが復帰回転される際、テーパ面がボールを押圧するため、ボールを径方向内方にスムーズに移動させることができると共に、セットリングを捩りコイルばねによって保持溝がボールと対向する位置までスムーズに復帰回転させることができる。   Further, when the wall surface of the notch portion on the holding groove side is a tapered surface inclined toward the holding groove side, the taper surface is obtained when the set ring is returned and rotated by the elasticity of the torsion coil spring from the state where the notch portion faces the ball. Since the ball is pressed, the ball can be moved smoothly inward in the radial direction, and the set ring can be smoothly rotated back to the position where the holding groove faces the ball by the torsion coil spring.

上記のように構成すれば、セットリングを捩りコイルばねの弾性に抗して回転させると、切欠部の端壁がボールに当接して上記切欠部がボールと対向するため、上記ボールの径方向外方への移動を自由とすることができ、その状態においてカップリング部と駆動軸の着脱を行なうことができる。   According to the above configuration, when the set ring is rotated against the elasticity of the torsion coil spring, the end wall of the notch comes into contact with the ball and the notch faces the ball. The outward movement can be made free, and in this state, the coupling portion and the drive shaft can be attached and detached.

また、カップリング部内に駆動軸を挿入したのち、セットリングの保持を解除すると、捩りコイルばねの弾性によりセットリングが復帰回転して保持溝の他端がボールに当接し、上記保持溝によりボールの径方向外方への移動を防止することができ、ボールを駆動軸の係合溝に係合する状態に保持することができる。   Also, after the drive shaft is inserted into the coupling part, when the holding of the set ring is released, the set ring returns and rotates due to the elasticity of the torsion coil spring, and the other end of the holding groove comes into contact with the ball. Can be prevented from moving radially outward, and the ball can be held in a state of being engaged with the engagement groove of the drive shaft.

このように、セットリングを回転させることにより、ボールの径方向への移動を制御することができるため、セットリングを軸方向にスライドさせてボールの径方向への移動を制御する従来の軸継手に比較して軸方向長さのコンパクト化を図ることができる。   In this way, since the movement of the ball in the radial direction can be controlled by rotating the set ring, the conventional shaft joint that controls the movement of the ball in the radial direction by sliding the set ring in the axial direction Compared to the above, the axial length can be made compact.

以下、この発明の実施の形態を図面に基づいて説明する。図1は、駆動軸1に対してジョイントＪを着脱させるようにした軸継手を示す。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a shaft coupling in which a joint J is attached to and detached from a drive shaft 1.

ここで、ジョイントＪとして、外輪１１の円筒形内面１２と内輪１３の球径外面１４とに軸方向に延びる複数のボール溝１５、１６を周方向に等間隔に形成し、外輪１１のボール溝１５と内輪１３のボール溝１６間にボール１７を組込み、各ボール１７を保持する保持器１８には外輪１１の円筒形内面１２に接触案内される球径外面１９と、内輪１３の球径外面１４に接触案内される球径内面２０とを形成し、その球径内面２０の中心と上記球径外面１９の中心をジョイント中心に対して左右に等距離オフセットさせたダブルオフセット形の等速ジョイントが採用されている。   Here, as the joint J, a plurality of ball grooves 15 and 16 extending in the axial direction are formed at equal intervals in the circumferential direction on the cylindrical inner surface 12 of the outer ring 11 and the spherical outer surface 14 of the inner ring 13. Balls 17 are assembled between the ball grooves 16 of the inner ring 13 and the inner ring 13. A cage 18 for holding each ball 17 includes a spherical outer surface 19 that is in contact with the cylindrical inner surface 12 of the outer ring 11 and a spherical outer surface of the inner ring 13. A double-offset constant velocity joint in which a spherical inner surface 20 guided in contact with the outer surface 14 is formed and the center of the spherical inner surface 20 and the center of the outer spherical surface 19 are offset equidistantly to the left and right with respect to the joint center. Is adopted.

外輪１１の端部には筒状のカップリング部２１が形成され、そのカップリング部２１の内側に対して駆動軸１が抜き差し自在とされている。   A cylindrical coupling portion 21 is formed at the end of the outer ring 11, and the drive shaft 1 can be inserted into and removed from the inside of the coupling portion 21.

駆動軸１とカップリング部２１とはスプライン２２を介して結合される。また、駆動軸１の端部外周には係合溝２が形成されている。   The drive shaft 1 and the coupling part 21 are coupled via a spline 22. An engagement groove 2 is formed on the outer periphery of the end of the drive shaft 1.

カップリング部２１には半径方向に貫通する複数の貫通孔２４が周方向に等間隔に形成され、各貫通孔２４内に上記駆動軸１の係合溝２に対して係合可能なボール２５が組込まれている。貫通孔２４の上記カップリング部２１の内周で開口する開口端には、ボール２５の一部がカップリング部２１内に臨む状態でボール２５を抜け止めする突出部２６が設けられている。   A plurality of through holes 24 penetrating in the radial direction are formed in the coupling portion 21 at equal intervals in the circumferential direction, and balls 25 that can be engaged with the engagement grooves 2 of the drive shaft 1 in the respective through holes 24. Is incorporated. A projecting portion 26 that prevents the ball 25 from coming off while a part of the ball 25 faces the coupling portion 21 is provided at the opening end of the through hole 24 that opens at the inner periphery of the coupling portion 21.

カップリング部２１の外周にはセットリング２７が回転自在に嵌合されている。セットリング２７はカップリング部２１の外周に形成された肩２８と、カップリング部２１の端部外周に取付けられた止め輪２９によって軸方向に位置決めされている。   A set ring 27 is rotatably fitted on the outer periphery of the coupling portion 21. The set ring 27 is positioned in the axial direction by a shoulder 28 formed on the outer periphery of the coupling portion 21 and a retaining ring 29 attached to the outer periphery of the end portion of the coupling portion 21.

図１および図２に示すように、セットリング２７の内周には周方向に延びる保持溝３０と、その保持溝３０の周方向一端部に切欠部３１とが形成され、上記切欠部３１の保持溝３０側の壁面はテーパ面３２とされている。   As shown in FIGS. 1 and 2, a holding groove 30 extending in the circumferential direction is formed on the inner periphery of the set ring 27, and a notch 31 is formed at one end in the circumferential direction of the holding groove 30. The wall surface on the holding groove 30 side is a tapered surface 32.

保持溝３０は、ボール２５が駆動軸１の係合溝２に係合する状態でボール２５の径方向外方への移動を防止して、ボール２５を係合状態に保持するようになっている。一方、切欠部３１は、上記ボール２５と対向する状態で係合溝２と係合解除し得る位置までボール２５の径方向外方への移動を自由とする深さとされている。   The holding groove 30 prevents the ball 25 from moving radially outward when the ball 25 is engaged with the engagement groove 2 of the drive shaft 1 and holds the ball 25 in the engaged state. Yes. On the other hand, the notch 31 has a depth that allows the ball 25 to move outward in the radial direction to a position where it can be disengaged from the engagement groove 2 in a state of facing the ball 25.

図１および図３に示すように、セットリング２７と外輪１１の端面間には捩りコイルばね３３が組込まれている。この捩りコイルばね３３は、保持溝３０の他端がボール２５に当接する方向に向けてセットリング２７を付勢している。   As shown in FIGS. 1 and 3, a torsion coil spring 33 is assembled between the end faces of the set ring 27 and the outer ring 11. The torsion coil spring 33 urges the set ring 27 in a direction in which the other end of the holding groove 30 contacts the ball 25.

実施の形態で示す軸継手は上記の構造から成り、駆動軸１とカップリング部２１の接続に際しては、捩りコイルばね３３の弾性に抗してセットリング２７を回転し、図５に示すように、切欠部３１をボール２５に対向させた状態でカップリング部２１の一端からカップリング部２１の内側に駆動軸１を挿入し、係合溝２がボール２５と対向する位置まで駆動軸１を挿入したのち、セットリング２７の保持を解除し、捩りコイルばね３３の復元弾性により、セットリング２７を復帰回転させる。   The shaft coupling shown in the embodiment has the above structure, and when connecting the drive shaft 1 and the coupling portion 21, the set ring 27 is rotated against the elasticity of the torsion coil spring 33, as shown in FIG. The drive shaft 1 is inserted into the coupling portion 21 from one end of the coupling portion 21 with the notch 31 facing the ball 25, and the drive shaft 1 is moved to a position where the engagement groove 2 faces the ball 25. After the insertion, the holding of the set ring 27 is released, and the set ring 27 is returned and rotated by the restoring elasticity of the torsion coil spring 33.

図５に示すように、セットリング２７の回転によってボール２５に切欠部３１を対向させると、ボール２５は切欠部３１内に挿入する方向に向けて移動自在となり、カップリング部２１の内側に対する駆動軸１の挿入によりボール２５が径方向外方に移動し、カップリング部２１内に駆動軸１をスムーズに挿入することができる。   As shown in FIG. 5, when the notch 31 is made to face the ball 25 by the rotation of the set ring 27, the ball 25 can move in the direction of insertion into the notch 31, and the inner side of the coupling portion 21 is driven. By inserting the shaft 1, the ball 25 moves radially outward, and the drive shaft 1 can be smoothly inserted into the coupling portion 21.

カップリング部２１の内側に対する駆動軸１の挿入後、セットリング２７の保持を解除し、捩りコイルばね３３の復元弾性により、セットリング２７を復帰回転させると、切欠部３１のテーパ面３２がボール２５を押圧するため、ボール２５は径方向内方に移動して係合溝２に係合する。   After the drive shaft 1 is inserted into the inside of the coupling portion 21, the holding of the set ring 27 is released, and when the set ring 27 is returned and rotated by the restoring elasticity of the torsion coil spring 33, the tapered surface 32 of the notch portion 31 becomes a ball. In order to press 25, the ball 25 moves radially inward and engages with the engaging groove 2.

セットリング２７は、図２に示すように保持溝３０の他端がボール２５に当接する位置まで復帰回転し、その復帰回転により保持溝３０がボール２５と対向するため、ボール２５は上記保持溝３０によって径方向外方に移動するのが防止され、係合溝２とボール２５の係合によって駆動軸１とカップリング部２１は接続状態に保持される。   As shown in FIG. 2, the set ring 27 returns to the position where the other end of the holding groove 30 contacts the ball 25, and the holding groove 30 faces the ball 25 by the return rotation. 30 is prevented from moving radially outward, and the engagement between the engagement groove 2 and the ball 25 keeps the drive shaft 1 and the coupling portion 21 in a connected state.

駆動軸１とカップリング部２１の接続解除に際しては、前述と同様にセットリング２７を捩りコイルばね３３の弾性に抗して回転させ、切欠部３１をボール２５に対向させた状態で駆動軸１を引き抜き、その引き抜き後、セットリング２７の保持を解除して、捩りコイルばね３３の復元弾性によりセットリング２７を復帰回転させる。   When the connection between the drive shaft 1 and the coupling portion 21 is released, the set shaft 27 is rotated against the elasticity of the torsion coil spring 33 and the notch 31 is opposed to the ball 25 in the same manner as described above. After the drawing, the holding of the set ring 27 is released, and the set ring 27 is returned and rotated by the restoring elasticity of the torsion coil spring 33.

実施の形態で示すように、セットリング２７の回転によってボール２５の径方向への移動を制御することにより、セットリングを軸方向に移動させてボールの径方向への移動を制御するようにした従来の軸継手に比較し、セットリングの組込みに大きなスペースを確保する必要がないため、軸方向長さのコンパクトな軸継手を得ることができる。   As shown in the embodiment, by controlling the movement of the ball 25 in the radial direction by the rotation of the set ring 27, the movement of the ball in the radial direction is controlled by moving the set ring in the axial direction. Compared to a conventional shaft coupling, it is not necessary to secure a large space for assembling the set ring, and thus a compact shaft coupling having an axial length can be obtained.

ここで、セットリング２７をガラス繊維等の繊維で強化された繊維強化プラスチックで成形すると、軸継手の軽量化を図ることができると共に、錆の発生がないため、耐久性の向上を図ることができる。   Here, when the set ring 27 is formed of fiber reinforced plastic reinforced with fibers such as glass fiber, the weight of the shaft joint can be reduced and rust is not generated, so that durability can be improved. it can.

実施の形態では、ジョイントＪとしてダブルオフセット形の等速ジョイントを示したが、ジョイントＪはこれに限定されない。例えば、ボールフィックストジョイントやアンダカッタフリージョイントのような固定式ジョイントであってもよく、あるいは、トリポードジョイントのような摺動式ジョイントであってもよい。   In the embodiment, the double offset type constant velocity joint is shown as the joint J, but the joint J is not limited to this. For example, it may be a fixed joint such as a ball fixed joint or an under cutter free joint, or a sliding joint such as a tripod joint.

この発明に係る軸継手の実施の形態を示す縦断正面図A longitudinal front view showing an embodiment of a shaft coupling according to the present invention 図１のII−II線に沿った断面図Sectional view along the line II-II in FIG. 図１のIII−III線に沿った断面図Sectional view along line III-III in FIG. カップリング部と駆動軸の接続前の状態を示す断面図Sectional view showing the state before the coupling part and drive shaft are connected 図４のＶ−Ｖ線に沿った断面図Sectional drawing along the VV line of FIG.

符号の説明Explanation of symbols

１ 駆動軸
２ 係合溝
Ｊ ジョイント
２１ カップリング部
２４ 貫通孔
２５ ボール
２７ セットリング
３０ 保持溝
３１ 切欠部
３２ テーパ面
３３ 捩りコイルばね DESCRIPTION OF SYMBOLS 1 Drive shaft 2 Engagement groove J Joint 21 Coupling part 24 Through-hole 25 Ball 27 Set ring 30 Holding groove 31 Notch part 32 Tapered surface 33 Torsion coil spring

Claims (3)

駆動軸とジョイントの端部に設けられた筒状カップリング部とをスプラインを介して着脱自在に連結する軸継手において、前記駆動軸の端部外周に周方向に延びる係合溝を形成し、前記カップリング部には半径方向に貫通する貫通孔を設け、その貫通孔内に前記係合溝に係合可能なボールを組込み、前記カップリング部の外側に嵌合された回転可能なセットリングの内周に周方向に延びて前記ボールを係合溝に係合する状態に保持する保持溝と、その保持溝の周方向一端に連続して前記係合溝から外れる位置まで前記ボールの径方向外方への移動を許容する切欠部とを設け、前記保持溝の周方向他端がボールに当接する方向に向けてセットリングに回転力を付与する捩りコイルばねを設けたことを特徴とする軸継手。   In a shaft coupling that detachably connects the drive shaft and a cylindrical coupling portion provided at the end of the joint via a spline, an engagement groove extending in the circumferential direction is formed on the outer periphery of the end of the drive shaft, The coupling part is provided with a through-hole penetrating in the radial direction, a ball that can be engaged with the engagement groove is incorporated in the through-hole, and a rotatable set ring fitted to the outside of the coupling part A holding groove that extends in the circumferential direction on the inner circumference of the ball and holds the ball in a state of engaging with the engagement groove, and a diameter of the ball up to a position where the ball is disengaged from the engagement groove continuously at one end in the circumferential direction of the holding groove. Provided with a torsion coil spring that provides a rotational force to the set ring in a direction in which the other circumferential end of the holding groove abuts the ball. Shaft coupling. 前記セットリングが、繊維強化プラスチックから成る請求項1に記載の軸継手。   2. The shaft coupling according to claim 1, wherein the set ring is made of fiber reinforced plastic. 前記切欠部の前記保持溝側の壁面をテーパ面とした請求項１又は２に記載の軸継手。   The shaft coupling according to claim 1 or 2, wherein a wall surface on the holding groove side of the notch portion is a tapered surface.
JP2005251230A 2005-08-31 2005-08-31 Shaft coupling Expired - Fee Related JP4584077B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549254U (en) * 1977-06-22 1979-01-22
JPS60101321A (en) * 1983-11-05 1985-06-05 イエアン・ヴアルテルシヤイト・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Shaft coupling member
JPS6141017A (en) * 1984-08-02 1986-02-27 Matsui Warutaashiyaido Kk Driving shaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549254U (en) * 1977-06-22 1979-01-22
JPS60101321A (en) * 1983-11-05 1985-06-05 イエアン・ヴアルテルシヤイト・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Shaft coupling member
JPS6141017A (en) * 1984-08-02 1986-02-27 Matsui Warutaashiyaido Kk Driving shaft

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