JPS6145376Y2 - - Google Patents
Info
- Publication number
- JPS6145376Y2 JPS6145376Y2 JP364881U JP364881U JPS6145376Y2 JP S6145376 Y2 JPS6145376 Y2 JP S6145376Y2 JP 364881 U JP364881 U JP 364881U JP 364881 U JP364881 U JP 364881U JP S6145376 Y2 JPS6145376 Y2 JP S6145376Y2
- Authority
- JP
- Japan
- Prior art keywords
- ball
- recess
- cylinder
- notch
- boss portion
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は、駆動回転体の筒ボス部に被動軸を遊
転可能に内嵌挿入し、この被動軸の外周面に形成
した凹部と前記筒ボス部に内外貫通状態に形成し
た切欠きとに亘つて伝動用ボールを係入保持し、
前記筒ボス部の外周に人為的に軸心方向シフト可
能なボール押え筒を外嵌し、該ボール押え筒の内
周部には前記ボールを凹部と切欠きとに亘つて係
入した位置に接当支持する接当面と、ボールが半
径方向外方に移行して前記凹部から外れるのを許
容する凹入部とを軸心方向に並設し、ボール押え
筒のシフトによつてボールを介した伝動と伝動解
除状態に切換えるよう構成したボールクラツチに
関するものである。[Detailed Description of the Invention] The present invention involves inserting a driven shaft into the cylindrical boss portion of the driving rotor so that it can rotate freely, and forming a recess formed on the outer circumferential surface of the driven shaft and the cylindrical boss portion passing through the inside and outside. The transmission ball is inserted and held across the notch formed in the
A ball holding cylinder that can be shifted in the axial direction is artificially fitted onto the outer periphery of the cylinder boss portion, and the ball is inserted into the inner circumference of the ball holding cylinder across the recess and the notch. An abutment surface that abuts and supports and a recess that allows the ball to move radially outward and come off the recess are arranged side by side in the axial direction, and the ball is moved through the ball by shifting the ball presser cylinder. This invention relates to a ball clutch configured to switch between a transmission and a transmission release state.
上記ボールクラツチにおいては、駆動回転体の
筒ボス部に形成した切欠きと被動軸に形成した凹
部に亘つて動力伝動用ボールが係入保持された伝
動状態において、このボールが接当駆動反力によ
つて常に半径方向外方に移行される力を受けてい
るようにボール係入部分の寸法を設定しておき、
ボール押え筒がクラツチ切り位置にシフトされた
ときにボールが迅速確実に被動軸の凹部から抜出
るようにしてあるのであるが、ボールが半径方向
外方に移行する力は部品の加工精度によつて変動
するものであり、ボールの外方移行力が大きすぎ
るとこれを受け止めるボール押え筒のシフトに大
きい抵抗が生じてクラツチ切り操作が重くなり、
又、逆にボールの外方移行力が小さすぎるとクラ
ツチの切れが悪くなる問題があつた。 In the above-mentioned ball clutch, in a transmission state in which the power transmission ball is engaged and held across the notch formed in the cylindrical boss portion of the driving rotor and the recess formed in the driven shaft, this ball makes contact with the driving reaction force. The dimensions of the ball engaging part are set so that it is always receiving a force transferred outward in the radial direction by
When the ball retainer is shifted to the clutch disengagement position, the ball is quickly and reliably pulled out of the recess in the driven shaft, but the force with which the ball moves outward in the radial direction depends on the machining accuracy of the part. If the outward movement force of the ball is too large, a large resistance will be generated in the shifting of the ball presser tube that absorbs this force, making the clutch disengagement operation difficult.
On the other hand, if the outward movement force of the ball is too small, there is a problem that the clutch becomes difficult to disengage.
この考案は、ボールの外方移行力を適正に設定
して組込むことが容易なボールクラツチを提供す
ることを日日的とする。 The object of this invention is to provide a ball clutch that is easy to install and to properly set the ball outward displacement force.
以下この考案の実施例を図面に基づいて説明す
る。 Examples of this invention will be described below based on the drawings.
第１図は本考案のボールクラツチを操向クラツ
チとして利用した歩行型耕耘機における車軸支承
部を示しており、ミツシヨンケース１の下部に図
外上方の変速機構で変速された動力がチエーン２
にて伝達される駆動回転体としてのスプロケツト
３が設けられ、このスプロケツト３の左右両側に
突設した筒ボス部４，４に被動軸としての車軸
５，５が遊転自在に内嵌挿入され且つスプロケツ
ト３に貫通した芯軸６が左右車軸５，５に遊嵌さ
れている。そして、前記筒ボス部４と両車軸５，
５の間に、スプロケツト３から左右車軸５，５へ
の動力伝達を独立的に断続するボールクラツチ
７，７が夫々装備されている。 Figure 1 shows the axle support of a walk-behind cultivator that uses the ball clutch of the present invention as a steering clutch, and the power shifted by the transmission mechanism located above (not shown) is transmitted to the lower part of the transmission case 1 through the chain 2.
A sprocket 3 is provided as a drive rotary body for transmission of power, and axles 5, 5 as driven shafts are fitted into cylindrical boss portions 4, 4 protruding from both left and right sides of the sprocket 3, allowing free rotation. A core shaft 6 passing through the sprocket 3 is loosely fitted to the left and right axles 5, 5. The cylinder boss portion 4 and both axles 5,
Between the sprocket 5 and the left and right axles 5, ball clutches 7, 7 are provided, respectively, to independently connect and disconnect power transmission from the sprocket 3 to the left and right axles 5, 5.
ボールクラツチ７は以下のように構成されてい
る。 The ball clutch 7 is constructed as follows.
車軸５の内方端部の外周には周方向一定ピツチ
で複数個（実施例では６個）の凹部８が形成され
るとともに、筒ボス部４，４には同数の切欠き９
が内外貫通して形成され、各凹部８と切欠き９の
対ごとに伝動用ボール１０が係入保持されてい
る。更に、各筒ボス部４の外周には軸心方向にシ
フト可能なボール押え筒１１が外嵌されるととも
に、常時はコイルばね１２によつて、横外方に押
圧付勢されている。このボール押え筒１１の内周
部には該筒１１がストツパー１３に接当して横外
方への移行が規制された位置にあるときにボール
１０を前記凹部８と切欠き９とに亘つて係入され
た状態に保持するための接当面１４と、前記筒
４′がバネ１２に抗してスプロケツト３側にシフ
トされたときにボール１０が凹部８から外方に外
れるのを許す凹入部１５とが形成されていて、左
右ボール押え筒１１，１１の左右シフトによつて
スプロケツト３から左右車軸５，５への動力伝達
が独立的に行われるように構成されている。尚、
各ボール押え筒１１は支軸１６を中心に揺動自在
なシフトフオーク１７によつてシフト操作される
ものであり、各シフトフオーク１７が図外の操向
クラツチレバーに夫々ワイヤ連係されている。 A plurality of recesses 8 (six in the embodiment) are formed at a constant pitch in the circumferential direction on the outer periphery of the inner end of the axle 5, and the same number of notches 9 are formed in the cylinder bosses 4, 4.
are formed to penetrate inside and outside, and a transmission ball 10 is engaged and held in each pair of recess 8 and notch 9. Furthermore, a ball presser cylinder 11 that is movable in the axial direction is fitted onto the outer periphery of each cylinder boss portion 4, and is normally pressed laterally outwardly by a coil spring 12. The inner circumferential portion of the ball holding cylinder 11 is provided with the ball 10 across the recess 8 and the notch 9 when the cylinder 11 is in contact with the stopper 13 and is in a position where lateral outward movement is restricted. an abutment surface 14 for holding the sprocket in the engaged state; and a recess for allowing the ball 10 to disengage outwardly from the recess 8 when the tube 4' is shifted toward the sprocket 3 against the spring 12. An inlet 15 is formed, and the power is transmitted from the sprocket 3 to the left and right axles 5, 5 independently by shifting the left and right ball holding cylinders 11, 11 left and right. still,
Each ball presser cylinder 11 is shifted by a shift fork 17 that is swingable about a support shaft 16, and each shift fork 17 is linked by wire to a steering clutch lever (not shown).
上記ボールクラツチ７において本考案では更に
次のような構成が付加されている。 In the present invention, the ball clutch 7 has the following additional configuration.
つまり、前記スプロケツト３の筒ボス部４の内
周面には各切欠き９……を通る環状の浅溝（グル
ープ）１８が形成されており、ボール１０を介し
た動力伝動状態においてボール１０と切欠き９の
内部端縁との接触点Ａが前記浅溝１８の底に位置
するようになつている。従つて、ボール１０は筒
ボス部４から接触点Ａにおいて接線方向に向う駆
動力F1を受け、又、車軸５との接触点Ｂにおい
て車軸５，５から接線方向に向う駆動反力F2を
受け、第４図に示すように、この駆動力F1と駆
動反力F2との合力がボール１０を常時半径方向
外方へ移行させようとする移行分力ｆとして作用
する。 That is, an annular shallow groove (group) 18 is formed on the inner circumferential surface of the cylindrical boss portion 4 of the sprocket 3, passing through each notch 9. A contact point A with the inner edge of the notch 9 is located at the bottom of the shallow groove 18. Therefore, the ball 10 receives a tangential driving force F 1 from the cylinder boss 4 at the contact point A, and also receives a tangential driving reaction force F 2 from the axles 5 at the contact point B with the axle 5. As shown in FIG. 4, the resultant force of the driving force F 1 and the driving reaction force F 2 acts as a transition force f that constantly tends to move the ball 10 outward in the radial direction.
そして、この移行分力ｆと遠心力とによつてボ
ール１０とボール押え筒１１との間に発生する摩
擦力に抗してボール押え筒１１をシフトし、接当
面１４を切欠き９位置から外すと、ボール１０は
ボール押え筒１１の凹入部１５に移行して動力伝
達が解除されることになる。 Then, the ball presser tube 11 is shifted against the frictional force generated between the ball 10 and the ball presser tube 11 due to this transitional force f and the centrifugal force, and the contact surface 14 is moved from the notch 9 position. When removed, the ball 10 moves into the recessed part 15 of the ball holding cylinder 11, and power transmission is canceled.
この場合、前記分力ｆが大きいとクラツチ入り
状態においてボール押え筒１１の接当面１４への
押圧力が大きくなつて、この筒１１のクラツチ切
り方向への移行抵抗が大きくなる。又、逆に前記
分力ｆが小さすぎるとボール１０が凹部８から外
れにくくなつてクラツチの切れが悪いものとな
る。そこで、筒ボス部４の前記浅溝１８の深さを
適当に設定することによつて適当な大きさの分力
ｆを得るのである。 In this case, if the component force f is large, the pressing force of the ball presser cylinder 11 on the abutting surface 14 becomes large in the clutch engaged state, and the resistance to the movement of the cylinder 11 in the clutch disengaging direction becomes large. On the other hand, if the component force f is too small, the ball 10 will be difficult to come off from the recess 8, resulting in poor clutch engagement. Therefore, by appropriately setting the depth of the shallow groove 18 of the cylinder boss portion 4, a component force f of an appropriate magnitude can be obtained.
尚、車軸５，５の外周面にも各凹部８……を通
る浅溝１９が形成されていて、凹部８の入口端縁
がボール１０との接触によつて変形して外方に突
出しても筒ボス部４の内周面に接触しないように
なつている。 Incidentally, shallow grooves 19 are formed on the outer peripheral surfaces of the axles 5, 5, passing through the respective recesses 8, and the entrance edges of the recesses 8 are deformed by contact with the balls 10 and protrude outward. The inner peripheral surface of the cylindrical boss portion 4 is also prevented from coming into contact with the inner circumferential surface of the cylinder boss portion 4.
以上実施例で説明したように本考案のボールク
ラツチは駆動回転体の筒ボス部の内周面にボール
係入用の切欠きを通る浅溝を形成して切欠きの端
縁とボールとの接触点を浅溝の底に位置するよう
にしたので、この浅溝の深さを変更することで簡
単にボールの駆動反力による外方への移行分力の
大きさを設定することができ、筒ボス部の内径及
びこれに嵌入される車軸の外径の寸法変更なしに
浅溝の加工のみによつてボールの外方移行分力を
適正に設定することが可能となつたのである。 As explained above in the embodiments, the ball clutch of the present invention has a shallow groove formed on the inner circumferential surface of the cylindrical boss portion of the driving rotor through which the notch for engaging the ball is formed, so that the edge of the notch and the ball are connected to each other. Since the contact point is located at the bottom of the shallow groove, by changing the depth of this shallow groove, the magnitude of the outward transition force due to the ball drive reaction force can be easily set. It has now become possible to appropriately set the outward movement component of the ball only by machining the shallow groove without changing the dimensions of the inner diameter of the cylinder boss or the outer diameter of the axle fitted therein.
図面は本考案に係るボールクラツチの実施例を
示し、第１図は縦断正面図、第２図は要部縦断側
面図、第３図は要部の拡大縦断正面図、第４図は
ベクトル図である。
３……駆動回転体、４……筒ボス部、５……被
動軸、８……凹部、９……切欠き、１０……ボー
ル、１１……ボール押え筒、１４……接当面、１
５……凹入部、１９……浅溝。
The drawings show an embodiment of the ball clutch according to the present invention, in which Fig. 1 is a longitudinal sectional front view, Fig. 2 is a longitudinal sectional side view of the main part, Fig. 3 is an enlarged longitudinal sectional front view of the main part, and Fig. 4 is a vector diagram. It is. 3... Drive rotor, 4... Cylinder boss, 5... Driven shaft, 8... Recess, 9... Notch, 10... Ball, 11... Ball presser cylinder, 14... Contact surface, 1
5... recessed part, 19... shallow groove.
Claims (1)
能に内嵌挿入し、この被動軸の外周面に形成した
凹部８と前記筒ボス部４に内外貫通状態に形成し
た切欠き９とに亘つて伝動用ボール１０を係入保
持し、前記筒ボス部４の外周に人為的に軸心方向
シフト可能なボール押え筒１１を外嵌し、該ボー
ル押え筒１１の内周部には前記ボール１０を凹部
８と切欠き９とに亘つて係入した位置に接当支持
する接当面１４と、ボール１０が半径方向外方に
移行して前記凹部８から外れるのを許容する凹入
部１５とを軸心方向に並設し、ボール押え筒１１
のシフトによつてボール１０を介した伝動と伝動
解除状態に切換えるよう構成したボールクラツチ
において、前記筒ボス部４の内周面に前記切欠き
９を通過する環状の浅溝１８を形成してあること
を特徴とするボールクラツチ。 A driven shaft 5 is inserted into the cylindrical boss portion 4 of the driving rotary body 3 so as to be freely rotatable, and a recess 8 is formed on the outer peripheral surface of the driven shaft, and a notch 9 is formed in the cylindrical boss portion 4 so as to penetrate inside and outside. A ball presser cylinder 11 that can be artificially shifted in the axial direction is fitted around the outer periphery of the cylinder boss 4, and a ball presser cylinder 11 that can be shifted in the axial direction is fitted onto the inner circumference of the ball presser cylinder 11. a contact surface 14 that abuts and supports the ball 10 in the engaged position across the recess 8 and the notch 9; and a recess that allows the ball 10 to move radially outward and come out of the recess 8. The entry portion 15 is arranged in parallel in the axial direction, and the ball presser cylinder 11
In the ball clutch configured to switch between transmission via a ball 10 and a transmission release state by shifting, a shallow annular groove 18 is formed on the inner circumferential surface of the cylindrical boss portion 4 and passes through the notch 9. A ball clutch that is characterized by certain things.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP364881U JPS6145376Y2 (en) | 1981-01-13 | 1981-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP364881U JPS6145376Y2 (en) | 1981-01-13 | 1981-01-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57117427U JPS57117427U (en) | 1982-07-21 |
| JPS6145376Y2 true JPS6145376Y2 (en) | 1986-12-20 |
Family
ID=29802087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP364881U Expired JPS6145376Y2 (en) | 1981-01-13 | 1981-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6145376Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2901333B1 (en) * | 2006-05-19 | 2008-07-04 | Sicma Aero Seat | CONNECTION ASSEMBLY BETWEEN A MECHANICAL SYSTEM AND AN ADJUSTMENT ACTUATOR COMPRISING CRABOTS / DECRABOTS |
-
1981
- 1981-01-13 JP JP364881U patent/JPS6145376Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57117427U (en) | 1982-07-21 |
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