JPH10281188A - Rotation transmission device - Google Patents
Rotation transmission deviceInfo
- Publication number
- JPH10281188A JPH10281188A JP8531897A JP8531897A JPH10281188A JP H10281188 A JPH10281188 A JP H10281188A JP 8531897 A JP8531897 A JP 8531897A JP 8531897 A JP8531897 A JP 8531897A JP H10281188 A JPH10281188 A JP H10281188A
- Authority
- JP
- Japan
- Prior art keywords
- driving shaft
- moving member
- shaft
- driven shaft
- magnet
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 20
- 239000000696 magnetic material Substances 0.000 claims description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 16
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転伝達装置に関
する。更に詳述すると、本発明は、確動クラッチ等の回
転伝達装置における原動側と従動側とを連結するための
構造の改良に関する。[0001] The present invention relates to a rotation transmission device. More specifically, the present invention relates to an improvement in a structure for connecting a driving side and a driven side in a rotation transmission device such as a positive clutch.
【０００２】[0002]
【従来の技術】回転伝達装置には、回転する原動軸の遠
心力を利用してこの原動軸と従動軸とを連結し、原動軸
の回転力を従動軸に伝達する伝達手段を備えたものがあ
る。図５に示す遠心クラッチ１０１は、原動軸１０２を
中心として回転するとともに支点１０５を中心として揺
動可能なクラッチ板１０４と、このクラッチ板１０４を
径方向内側へ付勢するスプリング１０６とを備えてな
る。この遠心クラッチ１０１は、原動軸１０２の回転に
伴ってクラッチ板１０４が遠心力によって外側に拡が
り、その回転スピードが所定値に達すると従動軸１０３
の内周面と接触して、原動軸１０２と従動軸１０３とを
連結し、従動軸１０３を回転させる。また、原動軸１０
２の回転スピードが一定値より遅くなると、図５の二点
鎖線に示すようにクラッチ板１０４はスプリング１０６
の付勢力により従動軸１０３の内周面から離され、原動
軸１０２と従動軸１０３との連結を解き、回転力の伝達
を遮断する。このように、クラッチ板１０４を従動軸１
０３の内周面に接触させたり離れさせたりして、回転力
の伝達の断続を行っている。2. Description of the Related Art A rotation transmitting device includes a transmission means for connecting a driving shaft to a driven shaft by utilizing the centrifugal force of a rotating driving shaft and transmitting the rotating force of the driving shaft to the driven shaft. There is. The centrifugal clutch 101 shown in FIG. 5 includes a clutch plate 104 that rotates about a driving shaft 102 and can swing about a fulcrum 105, and a spring 106 that urges the clutch plate 104 radially inward. Become. In the centrifugal clutch 101, the clutch plate 104 expands outward due to centrifugal force with the rotation of the driving shaft 102, and when the rotation speed reaches a predetermined value, the driven shaft 103
, The driving shaft 102 and the driven shaft 103 are connected, and the driven shaft 103 is rotated. Also, the driving shaft 10
When the rotation speed of the second rotation becomes slower than a predetermined value, the clutch plate 104 is disengaged from the spring 106 as shown by a two-dot chain line in FIG.
Is separated from the inner peripheral surface of the driven shaft 103 by the urging force, and the connection between the driving shaft 102 and the driven shaft 103 is released, and the transmission of the rotational force is interrupted. Thus, the clutch plate 104 is connected to the driven shaft 1
The transmission of the rotational force is intermittently performed by bringing the inner peripheral surface of the motor 03 into contact with or separating from the inner peripheral surface.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述の
遠心クラッチ１０１では、クラッチ板１０４を揺動可能
に取り付け尚かつ該クラッチ板１０４を付勢する手段と
してスプリング１０６を必要とするので、回転力の伝達
を断続するための機構が複雑となってしまう問題があ
る。また、スプリング１０６を設置するのにある程度の
スペースを必要としてしまう。このため、クラッチ機構
を設置するためのスペースを大きく必要とする。However, in the above-described centrifugal clutch 101, the clutch plate 104 is swingably mounted and the spring 106 is required as a means for urging the clutch plate 104. There is a problem that a mechanism for interrupting transmission is complicated. Further, a certain amount of space is required for installing the spring 106. Therefore, a large space for installing the clutch mechanism is required.
【０００４】そこで、本発明は、原動軸の回転力を駆動
軸に伝達する伝達手段をスプリングを用いた付勢手段に
よらずに中心側に戻すことができ、さらに省スペース化
と低コスト化をも図ることができる回転伝達装置を提供
することを目的とする。Therefore, according to the present invention, the transmission means for transmitting the rotational force of the driving shaft to the drive shaft can be returned to the center side without using a biasing means using a spring, and further space saving and cost reduction can be achieved. It is an object of the present invention to provide a rotation transmission device that can achieve the above.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成するた
め、請求項１記載の発明は、駆動源により回転される原
動軸と、該原動軸の外側に同軸状に配置される回転可能
な従動軸と、原動軸と従動軸とを自在に連結して原動軸
の回転力を従動軸に伝達するクラッチ手段とを有する回
転伝達装置において、クラッチ手段は、原動軸の中心側
に設けられる磁石と、該磁石に吸引される磁性体からな
る移動部材と、該移動部材を原動軸内でその径方向に移
動可能に収容し原動軸の外周面に開口する開口部を有す
る案内孔と、従動軸の内周面に移動部材の一部が係合可
能となるように設けられる凹部とにより構成され、原動
軸が所定以上の回転スピードで回転すると移動部材が遠
心力により案内孔内を移動し凹部に係合して原動軸と従
動軸とを連結し、原動軸が停止または所定の回転スピー
ド未満で回転すると移動部材は磁石により中心側へ吸引
されて原動軸と従動軸との連結を解くようにしている。In order to achieve the above object, according to the first aspect of the present invention, there is provided a driving shaft rotated by a driving source, and a rotatable driven shaft disposed coaxially outside the driving shaft. A rotation transmitting device having a shaft and a clutch unit that freely connects the driving shaft and the driven shaft to transmit the rotational force of the driving shaft to the driven shaft, wherein the clutch unit includes a magnet provided on the center side of the driving shaft. A moving member made of a magnetic material attracted by the magnet, a guide hole having an opening opening in the outer peripheral surface of the driving shaft for accommodating the moving member in the driving shaft so as to be movable in a radial direction thereof, and a driven shaft; A concave portion provided on the inner peripheral surface of the movable member so that a part of the movable member can be engaged. When the driving shaft rotates at a rotation speed of a predetermined speed or more, the movable member moves in the guide hole by centrifugal force, and the concave portion To connect the driving shaft and the driven shaft, Moving member and moving shaft rotates stopped or below a predetermined rotational speed so that it is sucked toward the center by the magnet uncoupling the driving shaft and the driven shaft.
【０００６】したがって、回転軸が回転を開始した当初
には、移動部材は原動軸の中心側の磁石に吸着された状
態で共に回転する。そして、原動軸の回転が所定の速度
に達すると、移動部材が遠心力により磁石から離されて
案内孔内を径方向外側へ移動し、従動軸の内周面上を転
動する。そして、移動部材が従動軸側の凹部に係合する
と、原動軸の回転力が移動部材を介して従動軸に伝達さ
れて、従動軸が原動軸と一体に回転する。また、原動軸
の回転速度が所定の速度を下回ると、あるいは停止する
と、移動部材に作用している遠心力よりも磁石による吸
引力が勝って、移動部材が磁石側へ移動し、移動部材と
凹部との係合が解かれ、原動軸の回転力が従動軸に伝達
されなくなる。Therefore, when the rotating shaft starts to rotate, the moving member rotates together with the moving shaft while being attracted to the magnet on the center side of the driving shaft. Then, when the rotation of the driving shaft reaches a predetermined speed, the moving member is separated from the magnet by the centrifugal force, moves radially outward in the guide hole, and rolls on the inner peripheral surface of the driven shaft. When the moving member engages with the concave portion on the driven shaft side, the rotational force of the driving shaft is transmitted to the driven shaft via the moving member, and the driven shaft rotates integrally with the driven shaft. Further, when the rotation speed of the driving shaft falls below a predetermined speed, or when the driving shaft stops, the attractive force of the magnet exceeds the centrifugal force acting on the moving member, the moving member moves to the magnet side, and the moving member The engagement with the concave portion is released, and the rotational force of the driving shaft is not transmitted to the driven shaft.
【０００７】請求項２記載の回転伝達装置においては、
開口部および凹部の開口形状を略円形に形成するととも
に略同じ開口径に形成し、移動部材を開口径より若干小
さい直径の球としている。したがって、原動軸が所定以
上の回転スピードで回転すると球は遠心力により移動
し、略円形の開口形状を有する凹部と係合する。According to a second aspect of the present invention, there is provided a rotation transmitting device.
The opening shape of the opening and the recess is formed to be substantially circular and the opening diameter is made substantially the same, and the moving member is a sphere having a diameter slightly smaller than the opening diameter. Therefore, when the driving shaft rotates at a rotation speed higher than a predetermined value, the ball moves by centrifugal force and engages with the concave portion having a substantially circular opening shape.
【０００８】請求項３記載の回転伝達装置においては、
案内孔は周方向等間隔に複数形成されるとともに各案内
孔は移動部材をそれぞれ有し、凹部はこれら複数形成さ
れた案内孔に各々対応して一致するように形成されてい
る。したがって、原動軸が所定以上の回転スピードで回
転すると各移動部材は遠心力により移動し、各々対応す
る凹部と係合する。According to a third aspect of the present invention, there is provided a rotation transmitting device.
A plurality of guide holes are formed at equal intervals in the circumferential direction, each guide hole has a moving member, and the concave portion is formed so as to correspond to each of the plurality of formed guide holes. Therefore, when the driving shaft rotates at a rotation speed higher than a predetermined value, each moving member moves by centrifugal force and engages with the corresponding recess.
【０００９】[0009]
【発明の実施の形態】以下、本発明の構成を図面に示す
実施の形態の一例に基づいて詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on an example of an embodiment shown in the drawings.
【００１０】図１に、本発明の回転伝達装置の一実施形
態を示す。この回転伝達装置１は、駆動源（図示省略）
により回転される原動軸３と、該原動軸３の外側に同軸
状に配置される回転可能な従動軸４と、原動軸３と従動
軸４とを自在に連結して原動軸３の回転力を従動軸４に
伝達するクラッチ手段２とを有している。このクラッチ
手段２は、原動軸３の中心側に設けられる磁石５と、該
磁石５に吸引される磁性体からなる移動部材６と、該移
動部材６を原動軸３内でその径方向に移動可能に収容し
原動軸３の外周面３ａで開口する開口部８を有する案内
孔７と、従動軸４の内周面４ａに移動部材６の一部が係
合可能となるように設けられる凹部９とにより構成され
ている。FIG. 1 shows an embodiment of the rotation transmitting device of the present invention. The rotation transmitting device 1 is provided with a driving source (not shown).
, A rotatable driven shaft 4 disposed coaxially outside the driving shaft 3, and the driving shaft 3 and the driven shaft 4 being freely connected to each other to rotate the driving shaft 3. To the driven shaft 4. The clutch means 2 includes a magnet 5 provided on the center side of the driving shaft 3, a moving member 6 made of a magnetic material attracted by the magnet 5, and moving the moving member 6 in the driving shaft 3 in the radial direction. A guide hole 7 having an opening 8 which is accommodated and which is opened at the outer peripheral surface 3a of the driving shaft 3, and a concave portion provided so that a part of the moving member 6 can be engaged with the inner peripheral surface 4a of the driven shaft 4; 9.
【００１１】原動軸３は駆動源により回転駆動される例
えば円柱形の回転体であり、本実施形態における原動軸
３は鉛直な中心軸３ｂを中心として回転可能に取り付け
られている。また、円筒形状の従動軸４は原動軸３と所
定の間隔をおいて設けられており、普段は原動軸３が回
転しても回転しないが、回転伝達装置により原動軸３に
連結されると回転駆動される。The driving shaft 3 is, for example, a columnar rotating body driven to rotate by a driving source, and the driving shaft 3 in the present embodiment is mounted rotatably about a vertical center shaft 3b. The driven shaft 4 having a cylindrical shape is provided at a predetermined distance from the driving shaft 3. Usually, the driven shaft 4 does not rotate even if the driving shaft 3 rotates, but when the driven shaft 4 is connected to the driving shaft 3 by a rotation transmission device. It is driven to rotate.
【００１２】磁石５は、後述する移動部材６を軸中心側
に吸引するように原動軸３に設けられている。この磁石
５の形状等は特に限定されるものではないが、例えば本
実施形態の場合は円筒形状に形成され、原動軸３の中心
軸３ｂの周囲に原動軸３と小同軸で一体となるように設
けられている。ただしこれに限られることはなく、例え
ばこの磁石５を原動軸３の内部に設けるようにしてもよ
い。The magnet 5 is provided on the driving shaft 3 so as to attract a moving member 6 described later toward the center of the shaft. The shape and the like of the magnet 5 are not particularly limited. For example, in the case of the present embodiment, the magnet 5 is formed in a cylindrical shape, and is coaxially integrated with the driving shaft 3 around the central axis 3 b of the driving shaft 3. It is provided in. However, the present invention is not limited to this. For example, the magnet 5 may be provided inside the driving shaft 3.
【００１３】移動部材６は、磁石５による吸引力を受け
る磁性体、好ましくは強磁性体から形成され、案内孔７
に案内されて原動軸３の内部を移動するように設けられ
る。この移動部材６の材質や形状は特に限定されるもの
ではないが、本実施形態の場合は鋼球を各案内孔７に配
置している。この場合、移動部材６の案内孔７内での移
動が点接触のため低摩擦で行われる。したがって、原動
軸３の回転が減速したときに、摩擦によって移動部材６
の磁石５側への移動が妨げられることがない。ただし、
移動部材６の形状は球形に限られず、遠心力を受けて案
内孔７内を摺動し得る形状であれば足り、例えば矩形断
面の案内孔７とその中を転がるように径方向へ移動する
円柱形状の鋼製移動部材６や、円形断面の案内孔７内を
径方向へ摺動する円柱形状の移動部材６、あるいはその
他の断面形状の柱状物や方形、三角錐等によって構成し
てもよい。The moving member 6 is made of a magnetic material, preferably a ferromagnetic material, which is attracted by the magnet 5 and has a guide hole 7.
To move inside the driving shaft 3. Although the material and shape of the moving member 6 are not particularly limited, in the case of the present embodiment, steel balls are arranged in the respective guide holes 7. In this case, the movement of the moving member 6 in the guide hole 7 is performed with low friction due to point contact. Therefore, when the rotation of the driving shaft 3 is decelerated, the moving member 6
Is not hindered from moving toward the magnet 5. However,
The shape of the moving member 6 is not limited to a spherical shape, but may be any shape that can slide in the guide hole 7 under centrifugal force. For example, the guide member 7 has a rectangular cross section and moves in the radial direction so as to roll in the inside. It may be composed of a cylindrical steel moving member 6, a cylindrical moving member 6 which slides in the guide hole 7 having a circular cross section in the radial direction, or a column, a square, a triangular pyramid or the like having another cross section. Good.
【００１４】原動軸３には、移動部材６を案内する案内
孔７が、原動軸３の中心側からこの原動軸３の外周側に
向かうように、かつ、外周面３ａに開口するように延設
されている。この案内孔７は、移動部材６である鋼球の
全体を収容できるように、径方向の長さが鋼球の径より
も大きいものとされている。本実施形態においては、径
方向に水平に延びる断面円形の案内孔７が、周方向等間
隔に設けられている。ただしこれに限られることはな
く、移動部材６の形状に合わせて矩形その他の形状とし
てもよい。また案内孔７は径方向に延設されるものに限
られず、磁石５の吸引力や原動軸３の回転スピード等と
の関係によっては、原動軸３の中心から径方向斜めに延
びるように設けることも可能である。A guide hole 7 for guiding the moving member 6 extends in the driving shaft 3 so as to extend from the center of the driving shaft 3 toward the outer periphery of the driving shaft 3 and open to the outer peripheral surface 3a. Has been established. The length of the guide hole 7 in the radial direction is larger than the diameter of the steel ball so that the entirety of the steel ball as the moving member 6 can be accommodated. In the present embodiment, guide holes 7 having a circular cross section extending horizontally in the radial direction are provided at equal intervals in the circumferential direction. However, the shape is not limited to this, and may be a rectangle or another shape according to the shape of the moving member 6. The guide hole 7 is not limited to the one that extends in the radial direction, but is provided so as to extend obliquely in the radial direction from the center of the driving shaft 3 depending on the attraction force of the magnet 5 and the rotation speed of the driving shaft 3. It is also possible.
【００１５】原動軸３と対向する従動軸４の内周面４ａ
には、移動部材６と係合可能な凹部９が設けられてい
る。本実施形態では３つの凹部９が周方向等間隔に、か
つそれぞれの凹部９が各案内孔７の開口部８に同時に一
致するように設けられている。また、本実施形態の凹部
９は、移動部材６である鋼球の略半分が没入可能となる
ように半球形状に形成されている。ただし凹部９の形状
はこれに限られず、移動部材６の形状に合わせて様々な
形状に形成してよいことは勿論である。Inner peripheral surface 4a of driven shaft 4 facing driving shaft 3
Is provided with a concave portion 9 which can be engaged with the moving member 6. In the present embodiment, three concave portions 9 are provided at equal intervals in the circumferential direction, and each concave portion 9 is provided so as to coincide with the opening 8 of each guide hole 7 at the same time. Further, the concave portion 9 of the present embodiment is formed in a hemispherical shape so that approximately half of the steel ball as the moving member 6 can be immersed. However, the shape of the concave portion 9 is not limited to this, and it is needless to say that the concave portion 9 may be formed in various shapes according to the shape of the moving member 6.
【００１６】移動部材６、案内孔７、開口部８および凹
部９はそれぞれ１つずつ設けられていればクラッチ手段
２を構成することができる。ただし、均等な重量配分に
より原動軸３の回転を滑らかなものとし、かつ移動部材
６と凹部９との係合を確実なものとするためには、例え
ば本実施形態においてそれぞれを３つずつ設けているよ
うに、周方向に複数ずつ均等配置することが好ましい。The clutch means 2 can be constructed as long as one moving member 6, one guide hole 7, one opening 8 and one recess 9 are provided. However, in order to make the rotation of the driving shaft 3 smooth and to ensure the engagement between the moving member 6 and the concave portion 9 by uniform weight distribution, for example, each of the three is provided in the present embodiment. As described above, it is preferable to equally arrange a plurality of pieces in the circumferential direction.
【００１７】以上のように構成されたクラッチ手段２を
備える回転伝達装置１は、以下のように動作する。The rotation transmission device 1 including the clutch means 2 configured as described above operates as follows.
【００１８】まず、原動軸３が回転駆動されていないと
きは、移動部材６である鋼球は磁石５に吸引されて図１
に示すように軸中心側に寄っている。また、原動軸３が
駆動源により回転駆動され回転し始めても、回転当初は
回転スピードが速くないため、鋼球は磁石５によって中
心側に吸引されたままである。なお、このときの従動軸
４は原動軸３が回転しても停止したままである。First, when the driving shaft 3 is not driven to rotate, the steel ball as the moving member 6 is attracted by the magnet 5 and
As shown in the figure. Further, even if the driving shaft 3 is driven to rotate by the drive source and starts to rotate, the steel ball is still attracted to the center by the magnet 5 because the rotation speed is not fast at the beginning of rotation. Note that the driven shaft 4 at this time remains stopped even when the driving shaft 3 rotates.
【００１９】原動軸３の回転スピードが次第に速くなる
に伴い、鋼球に働く遠心力が増加する。そして、原動軸
３が所定の回転スピードを越えて回転し、この遠心力が
鋼球に働く吸引力を上回ると、鋼球は案内孔７に案内さ
れて径方向外側に移動する。外側に移動した鋼球は、従
動軸４の凹部９に直接はまりこむか、従動軸４の内周面
４ａに当接するか、あるいは凹部９の縁に当接する。内
周面４ａあるいは縁に当接したときは、原動軸３がさら
に回転するので、案内孔７と凹部９の位置が一致したと
ころで鋼球はその略半分を凹部９に没入させ、図２に示
すようにこの凹部９と係合する。As the rotation speed of the driving shaft 3 gradually increases, the centrifugal force acting on the steel ball increases. When the driving shaft 3 rotates beyond a predetermined rotation speed and the centrifugal force exceeds the suction force acting on the steel ball, the steel ball is guided by the guide hole 7 and moves radially outward. The steel ball that has moved outward fits directly into the recess 9 of the driven shaft 4, contacts the inner peripheral surface 4 a of the driven shaft 4, or contacts the edge of the recess 9. When the drive shaft 3 is further rotated when it comes into contact with the inner peripheral surface 4a or the edge, when the position of the guide hole 7 and the concave portion 9 match, approximately half of the steel ball is immersed in the concave portion 9, and FIG. It engages with this recess 9 as shown.
【００２０】凹部９と係合した鋼球は従動軸４を原動軸
３に連結させ、原動軸３の回転駆動力を従動軸４に伝達
する。したがって、原動軸３が所定値以上の回転スピー
ドで回転している限り、従動軸４は原動軸３と一体に回
転することになる（図３）。The steel ball engaged with the recess 9 connects the driven shaft 4 to the driving shaft 3, and transmits the rotational driving force of the driving shaft 3 to the driven shaft 4. Therefore, as long as the driving shaft 3 rotates at a rotation speed equal to or higher than the predetermined value, the driven shaft 4 rotates integrally with the driving shaft 3 (FIG. 3).
【００２１】また、原動軸３の回転スピードがある速度
以下まで遅くなるか、あるいは停止することによって遠
心力が小さくなると、鋼球は磁石５に吸引されて再び軸
中心側に移動する。これにより鋼球と従動軸４との係合
が解かれ、従動軸４は再び原動軸３と連結されていない
状態となる（図４）。When the rotation speed of the driving shaft 3 is reduced to a certain speed or less, or when the centrifugal force is reduced by stopping, the steel ball is attracted by the magnet 5 and moves to the center of the shaft again. Thereby, the engagement between the steel ball and the driven shaft 4 is released, and the driven shaft 4 is not connected to the driving shaft 3 again (FIG. 4).
【００２２】以上の説明のとおり、本実施形態では鋼球
を移動部材６として用いているので遠心力あるいは吸引
力による移動部材６の移動が滑らかである。また、凹部
９の形状を略半球としているので、鋼球と係合しやす
く、回転力の伝達が確実に行われるとともに係合の際の
衝撃も少ないものとされている。As described above, since the steel ball is used as the moving member 6 in this embodiment, the moving member 6 is smoothly moved by the centrifugal force or the suction force. In addition, since the shape of the concave portion 9 is substantially hemispherical, it is easy to engage with the steel ball, the torque is reliably transmitted, and the impact at the time of engagement is small.
【００２３】また、本実施形態において３つの移動部材
６を設けたように、複数の移動部材６を周方向等間隔に
従動軸４に係合させることにより、原動軸３の回転駆動
力を等配分して従動軸４に伝達することができ、回転力
の伝達をより確実に行うことができる。Further, as in the present embodiment, the plurality of moving members 6 are engaged with the driven shaft 4 at equal intervals in the circumferential direction, so that the rotational driving force of the driving shaft 3 can be reduced. The torque can be distributed to the driven shaft 4 and transmitted, and the torque can be transmitted more reliably.
【００２４】なお、上述の実施形態は本発明の好適な実
施の一例ではあるがこれに限定されるものではなく本発
明の要旨を逸脱しない範囲において種々変形実施可能で
ある。例えば、本実施形態においては案内孔７を回転面
に対して水平となるように設けているが、この回転面に
対して外周に向かうほど高くなるように傾斜させて設け
ることにより、磁石５の吸引力以外にも重力による求心
力を与えるようにすることができる。The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the guide hole 7 is provided so as to be horizontal with respect to the rotation surface. In addition to the suction force, a centripetal force due to gravity can be applied.
【００２５】また、本実施形態において説明した磁石４
の吸引力により付勢するという構造は、クラッチ板を用
いている従来の回転伝達手段においても勿論用いること
ができる。Also, the magnet 4 described in the present embodiment
The structure of urging by the attraction force can of course be used in a conventional rotation transmitting means using a clutch plate.
【００２６】[0026]
【発明の効果】以上の説明より明らかなように、請求項
１記載の発明では、クラッチ手段は、原動軸の中心側に
設けられる磁石と、該磁石に吸引される磁性体からなる
移動部材と、該移動部材を原動軸内でその径方向に移動
可能に収容し原動軸の外周面に開口する開口部を有する
案内孔と、従動軸の内周面に移動部材の一部が係合可能
となるように設けられる凹部とにより構成され、原動軸
が所定以上の回転スピードで回転すると移動部材が遠心
力により案内孔内を移動し凹部に係合して原動軸と従動
軸とを連結し、原動軸が停止または所定の回転スピード
未満で回転すると移動部材は磁石により中心側へ吸引さ
れて原動軸と従動軸との連結を解くようにしているの
で、原動軸の回転駆動力を移動部材を介して従動軸に伝
達し、また磁石の吸引力によって移動部材を元の位置に
復帰させることができる。これにより、簡単な構造の装
置によって回転駆動力を従動軸に確実に伝達することが
できる。しかも、簡単な構造であるために小型化、省ス
ペース化を図ることができる。As is apparent from the above description, according to the first aspect of the present invention, the clutch means includes a magnet provided on the center side of the driving shaft and a moving member made of a magnetic material attracted by the magnet. A guide hole having an opening opening in the outer peripheral surface of the driving shaft and accommodating the moving member in the driving shaft so as to be movable in a radial direction thereof, and a part of the moving member being engageable with the inner peripheral surface of the driven shaft. When the driving shaft rotates at a predetermined rotation speed or more, the moving member moves in the guide hole by centrifugal force and engages with the recess to connect the driving shaft and the driven shaft. When the driving shaft stops or rotates at a speed less than a predetermined rotation speed, the moving member is attracted to the center side by the magnet to release the connection between the driving shaft and the driven shaft. To the driven shaft via It can be returned to the original position the moving member by the force. Thus, the rotational driving force can be reliably transmitted to the driven shaft by a device having a simple structure. Moreover, because of the simple structure, downsizing and space saving can be achieved.
【００２７】また、請求項２記載の発明の回転伝達装置
では、開口部および凹部の開口形状を略円形に形成する
とともに略同じ開口径に形成し、移動部材を開口径より
若干小さい直径の球としているので、移動部材の移動が
滑らかであり、また、鋼球からなる移動部材と係合しや
すい。これにより、従動軸を原動軸に連結する際の動作
を滑らかにし、かつ衝撃を少なくすることができる。Further, in the rotation transmitting device according to the second aspect of the present invention, the openings and the recesses are formed to be substantially circular and have substantially the same opening diameter, and the moving member is a sphere having a diameter slightly smaller than the opening diameter. Therefore, the movement of the moving member is smooth, and the moving member is easily engaged with the moving member made of a steel ball. Thereby, the operation at the time of connecting the driven shaft to the driving shaft can be made smooth and the impact can be reduced.
【００２８】さらに、請求項３記載の発明の回転伝達装
置においては、案内孔は周方向等間隔に複数形成される
とともに各案内孔は移動部材をそれぞれ有し、凹部はこ
れら複数形成された案内孔に各々対応して一致するよう
に形成されているので、複数の移動部材を周方向等間隔
に従動軸に係合させることができる。これにより、原動
軸の回転駆動力を等配分して従動軸に伝達することがで
き、回転伝達をより確実に行うことができる。Further, in the rotation transmitting device according to the third aspect of the present invention, a plurality of guide holes are formed at equal intervals in the circumferential direction, each guide hole has a moving member, and the concave portion has a plurality of formed guides. Since it is formed so as to correspond to each of the holes, a plurality of moving members can be engaged with the driven shaft at equal intervals in the circumferential direction. As a result, the rotation driving force of the driving shaft can be equally distributed to the driven shaft, and the rotation can be transmitted more reliably.
【図１】本発明の回転伝達装置の一実施形態を示す概略
断面図である。FIG. 1 is a schematic sectional view showing one embodiment of a rotation transmitting device of the present invention.
【図２】同実施の形態の動作を説明するための図であ
り、原動軸の回転により移動した移動部材が凹部と係合
する様子を示す。FIG. 2 is a view for explaining the operation of the embodiment, and shows a state in which a moving member moved by rotation of a driving shaft engages with a concave portion.
【図３】同実施の形態の動作を説明するための図であ
り、原動軸と従動軸が一体に回転する様子を示す。FIG. 3 is a diagram for explaining the operation of the embodiment, and shows a state in which a driving shaft and a driven shaft rotate integrally.
【図４】同実施の形態の動作を説明するための図であ
り、原動軸が停止することにより移動部材が中心側に吸
引されて凹部との係合が解かれる様子を示す。FIG. 4 is a view for explaining the operation of the embodiment, and shows a state in which the moving member is attracted to the center side when the driving shaft stops and the engagement with the concave portion is released.
【図５】従来の回転伝達装置を示す概略断面図である。FIG. 5 is a schematic sectional view showing a conventional rotation transmission device.
１ 回転伝達装置 ２ クラッチ手段 ３ 原動軸 ３ａ 外周面 ４ 従動軸 ４ａ 内周面 ５ 磁石 ６ 移動部材 ７ 案内孔 ８ 開口部 ９ 凹部 Reference Signs List 1 rotation transmission device 2 clutch means 3 driving shaft 3a outer peripheral surface 4 driven shaft 4a inner peripheral surface 5 magnet 6 moving member 7 guide hole 8 opening 9 recess
Claims (3)
動軸の外側に同軸状に配置される回転可能な従動軸と、
前記原動軸と前記従動軸とを自在に連結して前記原動軸
の回転力を前記従動軸に伝達するクラッチ手段とを有す
る回転伝達装置において、前記クラッチ手段は、前記原
動軸の中心側に設けられる磁石と、該磁石に吸引される
磁性体からなる移動部材と、該移動部材を前記原動軸内
でその径方向に移動可能に収容し前記原動軸の外周面に
開口する開口部を有する案内孔と、前記従動軸の内周面
に前記移動部材の一部が係合可能となるように設けられ
る凹部とにより構成され、前記原動軸が所定以上の回転
スピードで回転すると前記移動部材が遠心力により前記
案内孔内を移動し前記凹部に係合して前記原動軸と前記
従動軸とを連結し、前記原動軸が停止または所定の回転
スピード未満で回転すると前記移動部材は前記磁石によ
り中心側へ吸引されて前記原動軸と前記従動軸との連結
を解くことを特徴とする回転伝達装置。A driving shaft rotated by a driving source; a rotatable driven shaft disposed coaxially outside the driving shaft;
A rotation transmitting device having a clutch means for freely connecting the driving shaft and the driven shaft and transmitting a rotational force of the driving shaft to the driven shaft, wherein the clutch means is provided on a center side of the driving shaft. A guide having a magnet to be moved, a moving member made of a magnetic material attracted by the magnet, and an opening that is accommodated in the driving shaft so as to be movable in a radial direction thereof and that opens to the outer peripheral surface of the driving shaft. A hole and a recess provided so that a part of the moving member can be engaged with the inner peripheral surface of the driven shaft. When the driving shaft rotates at a predetermined rotation speed or more, the moving member is centrifuged. By moving in the guide hole by force and engaging with the concave portion to connect the driving shaft and the driven shaft, when the driving shaft stops or rotates below a predetermined rotation speed, the moving member is centered by the magnet. Sucked to the side Rotation transmission apparatus characterized by uncoupling of the driven shaft and the driving shaft Te.
略円形に形成するとともに略同じ開口径に形成し、前記
移動部材を前記開口径より若干小さい直径の球としたこ
とを特徴とする請求項１記載の回転伝達装置。2. The method according to claim 1, wherein the opening and the recess are formed in substantially circular shapes with substantially the same opening diameter, and the moving member is a sphere having a diameter slightly smaller than the opening diameter. Item 4. The rotation transmitting device according to Item 1.
れるとともに各案内孔は前記移動部材をそれぞれ有し、
前記凹部はこれら複数形成された案内孔に各々対応して
一致するように形成されていることを特徴とする請求項
１または２記載の回転伝達装置。3. A plurality of the guide holes are formed at equal intervals in a circumferential direction, and each guide hole has the moving member, respectively.
The rotation transmission device according to claim 1, wherein the recess is formed so as to correspond to each of the plurality of formed guide holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8531897A JPH10281188A (en) | 1997-04-03 | 1997-04-03 | Rotation transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8531897A JPH10281188A (en) | 1997-04-03 | 1997-04-03 | Rotation transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10281188A true JPH10281188A (en) | 1998-10-20 |
Family
ID=13855274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8531897A Pending JPH10281188A (en) | 1997-04-03 | 1997-04-03 | Rotation transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10281188A (en) |
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|---|---|---|---|---|
| US8182389B2 (en) | 2008-02-04 | 2012-05-22 | Kabushiki Kaisha Toshiba | Driving force transmitting device, image forming apparatus, and driving force transmitting method |
| CN105020295A (en) * | 2014-05-02 | 2015-11-04 | 刘运武 | Bolt type energy-saving starter |
| CN107448505A (en) * | 2017-08-02 | 2017-12-08 | 汤树人 | It is a kind of without control at a high speed triggering and can low speed keep clutch |
| CN107676446A (en) * | 2017-10-24 | 2018-02-09 | 常熟市邦知光电科技有限公司 | A kind of two grades of high-speed belt transmission mechanisms |
| CN108980206A (en) * | 2018-09-29 | 2018-12-11 | 王文学 | Full permanent magnetism dynamic complete suspending bearing |
| WO2018230744A1 (en) * | 2017-06-15 | 2018-12-20 | キヤノン株式会社 | Cartridge and electrophotographic image formation device |
| CN109611465A (en) * | 2018-12-27 | 2019-04-12 | 杨世国 | A kind of centrifugation permanent magnetic automatic clutch of revolving speed and the two-parameter control of torque |
| CN113236679A (en) * | 2021-04-07 | 2021-08-10 | 新兴铸管股份有限公司 | Coupling device |
| CN114251382A (en) * | 2021-12-28 | 2022-03-29 | 中铁十一局集团有限公司 | Bidirectional overrunning clutch |
-
1997
- 1997-04-03 JP JP8531897A patent/JPH10281188A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8182389B2 (en) | 2008-02-04 | 2012-05-22 | Kabushiki Kaisha Toshiba | Driving force transmitting device, image forming apparatus, and driving force transmitting method |
| CN105020295A (en) * | 2014-05-02 | 2015-11-04 | 刘运武 | Bolt type energy-saving starter |
| US11392082B2 (en) | 2017-06-15 | 2022-07-19 | Canon Kabushiki Kaisha | Cartridge with a mechanism for transmitting a force to a developing roller of the cartridge |
| WO2018230744A1 (en) * | 2017-06-15 | 2018-12-20 | キヤノン株式会社 | Cartridge and electrophotographic image formation device |
| JP2019003194A (en) * | 2017-06-15 | 2019-01-10 | キヤノン株式会社 | Cartridge and electrophotographic image forming apparatus |
| CN110945440B (en) * | 2017-06-15 | 2022-12-27 | 佳能株式会社 | Cartridge and electrophotographic image forming apparatus |
| KR20200019207A (en) * | 2017-06-15 | 2020-02-21 | 캐논 가부시끼가이샤 | Cartridges and Electrophotographic Image Forming Devices |
| CN110945440A (en) * | 2017-06-15 | 2020-03-31 | 佳能株式会社 | Cartridge and electrophotographic image forming apparatus |
| AU2018283274B2 (en) * | 2017-06-15 | 2021-05-13 | Canon Kabushiki Kaisha | Cartridge and Electrophotographic Image Forming Apparatus |
| CN107448505A (en) * | 2017-08-02 | 2017-12-08 | 汤树人 | It is a kind of without control at a high speed triggering and can low speed keep clutch |
| CN107676446A (en) * | 2017-10-24 | 2018-02-09 | 常熟市邦知光电科技有限公司 | A kind of two grades of high-speed belt transmission mechanisms |
| CN107676446B (en) * | 2017-10-24 | 2020-08-04 | 台州辉腾泵业有限公司 | Two-gear high-speed belt transmission mechanism |
| CN108980206A (en) * | 2018-09-29 | 2018-12-11 | 王文学 | Full permanent magnetism dynamic complete suspending bearing |
| CN109611465A (en) * | 2018-12-27 | 2019-04-12 | 杨世国 | A kind of centrifugation permanent magnetic automatic clutch of revolving speed and the two-parameter control of torque |
| CN113236679A (en) * | 2021-04-07 | 2021-08-10 | 新兴铸管股份有限公司 | Coupling device |
| CN114251382A (en) * | 2021-12-28 | 2022-03-29 | 中铁十一局集团有限公司 | Bidirectional overrunning clutch |
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