JPH1163026A - Unidirectional clutch - Google Patents
Unidirectional clutchInfo
- Publication number
- JPH1163026A JPH1163026A JP9228188A JP22818897A JPH1163026A JP H1163026 A JPH1163026 A JP H1163026A JP 9228188 A JP9228188 A JP 9228188A JP 22818897 A JP22818897 A JP 22818897A JP H1163026 A JPH1163026 A JP H1163026A
- Authority
- JP
- Japan
- Prior art keywords
- ring member
- rollers
- outer ring
- wedge
- way clutch
- 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
Landscapes
- Pulleys (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ころを用いたタイ
プの一方向クラッチに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-way clutch using rollers.
【０００２】[0002]
【従来の技術】従来の一方向クラッチでは、通常、くさ
び状空間を形成するためのカム面を外輪の内周面に形成
している。この外輪は、ステンレス鋼などにより形成さ
れており、また、ころは、軸受鋼などにより形成されて
いる。そのため、通常は、外輪のカム面の硬度ところの
硬度とがほぼ同等になっていると言える。2. Description of the Related Art In a conventional one-way clutch, a cam surface for forming a wedge-shaped space is usually formed on an inner peripheral surface of an outer race. The outer ring is made of stainless steel or the like, and the rollers are made of bearing steel or the like. Therefore, it can be generally said that the hardness of the cam surface of the outer ring is substantially equal to the hardness of the cam surface.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上述した従
来の一方向クラッチは、ころがロックしている状態にお
いて、瞬間的な衝撃が加わることによって、ころの外周
面に圧痕（局部的な永久変形）が形成されることがあ
る。In the above-described conventional one-way clutch, when the roller is locked, an instantaneous impact is applied to the roller to cause indentations (local permanent deformation) on the outer peripheral surface of the roller. ) May be formed.
【０００４】このような圧痕が形成されると、ころの真
円度が低下するため、甚だしい場合には、ころの挙動が
不安定になってロック、フリー動作が安定的に行えなく
なってしまい、焼き付き寿命が短くなりやすくなる。し
かも、前記圧痕は、すべてのころに均等に形成されるも
のでないため、ころそれぞれのロック、フリー動作のタ
イミングがずれてしまうなど、動力伝達トルクがロスす
ることも考えられる。このような原因により、仮に、同
期してロックするころの数が少なくなってしまうと、ロ
ック状態のころがくさび状空間における狭い側に必要以
上に食い込むことになって、ころやカム面あるいはカム
面と対向する内輪部材側に対して深い圧痕が形成される
ことにもなりかねない。When such indentations are formed, the roundness of the rollers is reduced. In severe cases, the behavior of the rollers becomes unstable, and the locking and free operation cannot be performed stably. The seizure life is likely to be short. Moreover, since the indentations are not formed evenly on all the rollers, the power transmission torque may be lost, for example, the timing of locking and free operation of each roller may be shifted. If the number of rollers to be locked in synchronization is reduced due to such a cause, the rollers in the locked state may bite into the narrow side of the wedge-shaped space more than necessary, and the rollers, the cam surface or the cam Deep indentations may be formed on the inner ring member side facing the surface.
【０００５】したがって、本発明は、一方向クラッチに
おいて、ころのロック、フリー動作を長期にわたって安
定的に行えるようにすることを目的としている。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a one-way clutch capable of stably performing roller locking and free operation for a long period of time.
【０００６】[0006]
【課題を解決するための手段】本発明の第１の一方向ク
ラッチは、径方向内外に配置される内輪部材と外輪部材
との間で、動力を伝達する状態と動力伝達を遮断する状
態とに切り換えるもので、内輪部材と外輪部材との間の
対向空間の円周数カ所に、周方向一方へ向けて間隔が狭
くなるくさび状空間が設けられており、この各くさび状
空間それぞれに配設されるころの硬度が、硬化処理によ
り高く設定されている。A first one-way clutch according to the present invention has a state in which power is transmitted and a state in which power transmission is interrupted between an inner ring member and an outer ring member arranged radially inward and outward. Wedge-shaped spaces are provided at several locations around the circumference of the opposing space between the inner ring member and the outer ring member. The wedge-shaped spaces are narrowed toward one circumferential direction, and are provided in each of the wedge-shaped spaces. The hardness of the roller is set higher by the hardening treatment.
【０００７】本発明の第２の一方向クラッチは、径方向
内外に配置される内輪部材と外輪部材との間で、動力を
伝達する状態と動力伝達を遮断する状態とに切り換える
もので、複数のころと、ころ収納用のポケットを有する
保持器と、内輪部材の外周面において前記ポケットに対
応する領域に設けられかつ外輪部材との間で周方向一方
へ向けて間隔が狭くなるくさび状空間を形成するカム面
と、ころをくさび状空間の狭い側へ押圧する押圧部材と
を備え、前記ころの硬度が、硬化処理により高く設定さ
れている。A second one-way clutch of the present invention switches between a state where power is transmitted and a state where power transmission is interrupted between an inner ring member and an outer ring member arranged inside and outside in the radial direction. A roller, a cage having a roller storage pocket, and a wedge-shaped space provided in a region corresponding to the pocket on the outer peripheral surface of the inner ring member and having a narrower space in one circumferential direction between the outer ring member and the outer ring member And a pressing member for pressing the rollers toward the narrow side of the wedge-shaped space, and the hardness of the rollers is set high by a hardening process.
【０００８】本発明の第３の一方向クラッチは、径方向
内外に配置される内輪部材と外輪部材との間で、動力を
伝達する状態と動力伝達を遮断する状態とに切り換える
もので、複数のころと、ころ収納用のポケットを有する
保持器と、外輪部材の内周面において前記ポケットに対
応する領域に設けられかつ内輪部材との間で周方向一方
へ向けて間隔が狭くなるくさび状空間を形成するカム面
と、ころをくさび状空間の狭い側へ押圧する押圧部材と
を備え、前記ころの硬度が、硬化処理により高く設定さ
れている。A third one-way clutch of the present invention switches between a state where power is transmitted and a state where power transmission is interrupted between an inner ring member and an outer ring member arranged inside and outside in the radial direction. A roller, a cage having a pocket for accommodating the rollers, and a wedge-like shape provided in a region corresponding to the pocket on the inner peripheral surface of the outer ring member and having a narrower space in one circumferential direction between the inner ring member and the inner ring member. A cam surface that forms a space, and a pressing member that presses the rollers toward the narrow side of the wedge-shaped space are provided, and the hardness of the rollers is set high by a hardening process.
【０００９】なお、本発明の一方向クラッチでの動力伝
達の形態としては、内輪部材を駆動として外輪部材を従
動とする場合や、その逆とする場合がある。The mode of power transmission by the one-way clutch of the present invention may be a case where the inner ring member is driven and the outer ring member is driven, or vice versa.
【００１０】上述した本発明では、衝撃などが加わった
ときでも、ころに圧痕が形成されにくくなる。そのた
め、ころの挙動を安定に保てるようになり、ころのロッ
ク、フリー動作が安定的に行われるようになる。これに
より、従来のように圧痕の有無によってころそれぞれの
外形がばらつくことを抑制できるようになるから、ころ
全体のロック、フリー動作のタイミングがほぼ一定に保
たれるようになる。In the present invention described above, even when an impact or the like is applied, indentations are less likely to be formed on the rollers. Therefore, the behavior of the rollers can be kept stable, and the locking and free operation of the rollers can be performed stably. This makes it possible to suppress variations in the outer shape of each roller depending on the presence or absence of an indentation as in the related art, so that the timing of locking and free operation of the entire roller can be kept substantially constant.
【００１１】[0011]
【発明の実施の形態】本発明の詳細を図１ないし図５に
示す実施形態に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on the embodiments shown in FIGS.
【００１２】図１ないし図３は本発明の一実施形態にか
かり、図１は、一方向クラッチを示す縦断面図、図２
は、図１の（２）−（２）線断面の矢視図、図３は、保
持器のころ配置部分を示す平面展開図である。FIGS. 1 to 3 relate to an embodiment of the present invention. FIG. 1 is a longitudinal sectional view showing a one-way clutch.
FIG. 3 is a sectional view taken along the line (2)-(2) of FIG. 1, and FIG. 3 is a developed plan view showing a roller arrangement portion of the cage.
【００１３】図中、Ａは一方向クラッチの全体を示して
おり、１は内輪部材としての軸体、２は外輪部材として
の外輪、３は保持器、４は複数のころ、５は押圧部材と
してのコイルバネ、６はバネ受け部材である。ここで
は、外輪２から軸体１に対して動力を伝達する状態と動
力伝達を遮断する状態とに切り換えるものとする。その
ため、軸体１が従動側、外輪２が駆動側となる。In the drawing, A indicates the entire one-way clutch, 1 is a shaft as an inner ring member, 2 is an outer ring as an outer ring member, 3 is a cage, 4 is a plurality of rollers, and 5 is a pressing member. The coil spring 6 is a spring receiving member. Here, a state in which power is transmitted from the outer ring 2 to the shaft body 1 and a state in which power transmission is interrupted are switched. Therefore, the shaft body 1 is on the driven side, and the outer ring 2 is on the driving side.
【００１４】外輪２の内周面は円形に形成されていて、
軸体１の外周面の円周数箇所には軸方向に沿う平坦な切
欠きからなるカム面７が設けられている。つまり、この
カム面７によって外輪２の内周面との間で周方向一方へ
向けて間隔が狭くなるくさび状空間が形成されるように
なっている。このように、カム面７を軸体１の外周面に
形成した構造の場合、ころ４に対して、回転遠心力が作
用しても外輪１の内周面に押し付けられる力が働くだけ
で済むから、すべてのころ４のロック、フリー動作が安
定的に行われるようになるなど、特に遠心力が大となる
高速回転域での使用に適している。The inner peripheral surface of the outer ring 2 is formed in a circular shape.
A cam surface 7 having a flat notch along the axial direction is provided at several places on the outer circumferential surface of the shaft body 1 at several circumferential positions. In other words, the cam surface 7 forms a wedge-shaped space in which the interval between the inner surface of the outer ring 2 and the inner surface of the outer ring 2 decreases in one circumferential direction. As described above, in the case of the structure in which the cam surface 7 is formed on the outer peripheral surface of the shaft body 1, even if a rotational centrifugal force acts on the rollers 4, only the force pressed against the inner peripheral surface of the outer ring 1 is required. Therefore, the lock and free operation of all the rollers 4 can be performed stably, and thus, it is particularly suitable for use in a high-speed rotation region where the centrifugal force is large.
【００１５】保持器３は、その円周数箇所にころ４を１
つずつ収納するポケット８と、コイルバネ５を１つずつ
収納する凹部９とが設けられている。ポケット８は、径
方向内外に貫通するように形成されており、凹部９は、
駆動部材となる軸体１側つまり保持器３の内径側でポケ
ット８および軸方向一側方へ向けて開放するように形成
されている。The cage 3 is provided with one roller 4 at several places around its circumference.
A pocket 8 for accommodating one coil spring 5 and a recess 9 for accommodating one coil spring 5 are provided. The pocket 8 is formed so as to penetrate in and out in the radial direction.
It is formed so as to open toward the pocket 8 and one side in the axial direction on the shaft body 1 side serving as a driving member, that is, on the inner diameter side of the retainer 3.
【００１６】コイルバネ５は、保持器３の凹部９内に収
容されており、それによって軸体１側に片寄って配置さ
れているとともに、その一端縁がバネ受け部材６を介し
てころ３の軸方向中央位置でかつころ４のＰＣＤよりも
軸体１側に片寄った位置に当接されている。この当接形
態により、コイルバネ５の弾発付勢力をころ４に対して
その自転動作を補助する形態でバランスよく付与できる
ようになる。The coil spring 5 is accommodated in the concave portion 9 of the retainer 3, whereby the coil spring 5 is arranged so as to be offset toward the shaft 1, and one end of the coil spring 5 is connected to the shaft of the roller 3 via a spring receiving member 6. The roller 4 is in contact with the roller 4 at a position closer to the shaft 1 than the PCD. With this contact mode, the elastic biasing force of the coil spring 5 can be applied to the rollers 4 in a well-balanced manner in a manner that assists the rotation of the rollers 4.
【００１７】バネ受け部材６は、コイルバネ５ところ４
との間に介在されており、そのコイルバネ５側の端面が
平坦面に、また、ころ４側の端面がころ４の外周面に沿
う湾曲面にそれぞれ形成されている。このバネ受け部材
６の存在により、コイルバネ５の組み込み状態に関係な
く、全てのころ４に付与するコイルバネ５の弾発付勢力
をほぼ一定にできるようになる。しかも、このバネ受け
部材６は、その少なくともころ４との当接部位につい
て、摩擦係数の低い合成樹脂材や自己潤滑性を有する材
料で形成される。The spring receiving member 6 includes four coil springs 4
The end face on the coil spring 5 side is formed on a flat surface, and the end face on the roller 4 side is formed on a curved surface along the outer peripheral surface of the roller 4. Due to the presence of the spring receiving member 6, the elastic biasing force of the coil spring 5 applied to all the rollers 4 can be made substantially constant regardless of the assembled state of the coil spring 5. In addition, the spring receiving member 6 is formed of a synthetic resin material having a low coefficient of friction or a material having self-lubricating properties at least at a contact portion with the roller 4.
【００１８】次に、上述した一方向クラッチＡの動作を
説明する。外輪２と軸体１の相対回転速度の変化によ
り、ころ４がくさび状空間の狭い側へ転動させられてロ
ック状態、あるいはころ４がくさび状空間の広い側へ転
動させられてフリー状態となる。これにより、外輪２と
軸体１が一体化して同期回転する状態になったり、ある
いは外輪２と軸体１との間での動力伝達が遮断される状
態になったりする。Next, the operation of the one-way clutch A will be described. Due to a change in the relative rotation speed between the outer ring 2 and the shaft body 1, the rollers 4 are rolled to the narrow side of the wedge-shaped space and are locked, or the rollers 4 are rolled to the wide side of the wedge-shaped space and are in the free state. Becomes As a result, the outer ring 2 and the shaft body 1 are integrated into a state in which they rotate synchronously, or the power transmission between the outer ring 2 and the shaft body 1 is interrupted.
【００１９】ところで、上述した一方向クラッチＡにお
いて、この実施形態では、ころ４の硬度を従来一般的な
ものよりも高く設定している。具体的に、ころ４を軸受
鋼（例えばＪＩＳ規格ＳＵＪ２）で形成し、その硬化処
理を施すことにより、ころ４の硬度がＨＲＣ硬さで６０
〜６４（通常は５８〜６２）に設定されている。そし
て、硬化処理の後に当該硬化処理に伴う歪みを除去する
ために、軸体１の外周面に研磨処理を施し、表面を所要
粗さに管理している。By the way, in the above-described one-way clutch A, in this embodiment, the hardness of the rollers 4 is set higher than that of the conventional general one. Specifically, the roller 4 is formed of bearing steel (for example, SUJ2 according to JIS) and is subjected to a hardening process so that the hardness of the roller 4 is 60 in terms of HRC hardness.
To 64 (normally 58 to 62). Then, in order to remove distortion accompanying the hardening process after the hardening process, the outer peripheral surface of the shaft body 1 is polished to manage the surface to a required roughness.
【００２０】ちなみに、カム面７を有する軸体１は、例
えばＪＩＳ規格Ｓ５５Ｃで形成され、その硬度がＨＲＣ
硬さで例えば５８〜６２に設定されている。つまり、こ
のカム面７の硬度は、従来から一般的に設定されている
硬度そのままとされている。Incidentally, the shaft body 1 having the cam surface 7 is formed, for example, according to JIS standard S55C and has a hardness of HRC.
The hardness is set to, for example, 58 to 62. That is, the hardness of the cam surface 7 is kept as it is, which is generally set conventionally.
【００２１】このように、ころ４の硬度を可及的に高く
設定していれば、使用時において瞬間的な衝撃が加わっ
たときでも、ころ４に対して圧痕が形成されにくくな
り、そのため、衝撃が加わったころ４の挙動も安定に保
たれることになる。また、従来のように圧痕の有無によ
ってころ４それぞれの外形がばらつくことを抑制できる
ようになるから、ころ４全体のロック、フリー動作のタ
イミングをほぼ一定に保つことができる。これらの結
果、クラッチ機能の長期安定化を実現できるようにな
る。As described above, if the hardness of the roller 4 is set as high as possible, even when an instantaneous impact is applied during use, an indentation is not easily formed on the roller 4, and therefore, The behavior of the roller 4 to which the impact is applied is also kept stable. In addition, since the outer shape of each roller 4 can be suppressed from being varied depending on the presence or absence of an indentation as in the related art, the timing of locking and free operation of the entire roller 4 can be kept substantially constant. As a result, long-term stabilization of the clutch function can be realized.
【００２２】なお、本発明は上記実施形態のみに限定さ
れるものではなく、種々な応用や変形が考えられる。It should be noted that the present invention is not limited to only the above embodiment, and various applications and modifications are conceivable.
【００２３】（１） 上記実施形態では、カム面７を軸
体１の外周面に形成したタイプの一方向クラッチＡを例
に挙げているが、例えば図４に示すように、カム面７を
外輪２の内周面に形成したタイプの一方向クラッチＡに
も本発明を適用できる。この実施形態において上記実施
形態と異なる構成は、カム面７を外輪２の内周面の円周
数箇所に形成していることであり、その他の構成は基本
的に同じである。この場合も、ころ４の硬度を従来一般
的なものよりも高く設定している。そのため、この実施
形態でも、上記実施形態とほぼ同様の作用、効果が得ら
れる。(1) In the above embodiment, the one-way clutch A in which the cam surface 7 is formed on the outer peripheral surface of the shaft body 1 is taken as an example. However, as shown in FIG. The present invention is also applicable to a one-way clutch A of a type formed on the inner peripheral surface of the outer race 2. In this embodiment, the configuration different from the above embodiment is that the cam surface 7 is formed at several places on the inner peripheral surface of the outer ring 2, and other configurations are basically the same. Also in this case, the hardness of the rollers 4 is set higher than that of a conventional general roller. Therefore, in this embodiment, substantially the same operation and effect as those of the above embodiment can be obtained.
【００２４】（２） 上記実施形態の一方向クラッチ
は、自動車などのエンジンに装着される各種の補機のプ
ーリに内蔵することができる。具体的に、補機としてオ
ルタネータとする場合について、図５に示して説明す
る。(2) The one-way clutch of the above embodiment can be built in pulleys of various auxiliary machines mounted on engines such as automobiles. Specifically, a case where an alternator is used as an auxiliary machine will be described with reference to FIG.
【００２５】この場合、オルタネータのプーリ２０とロ
ータ軸２１との間に例えば図１に示す一方向クラッチＡ
を介装し、さらに一方向クラッチＡの軸方向両側に転が
り軸受２２，２２を配設している。また、一方向クラッ
チＡは、外輪２２の軸方向両側に延長筒部が設けられて
おり、この延長筒部とロータ軸２１との間に転がり軸受
２２，２２が介装されている。さらに、一方向クラッチ
Ａの軸体１が円筒部材１ａとされ、ロータ軸２１の外周
に外嵌されている。In this case, for example, a one-way clutch A shown in FIG. 1 is provided between the alternator pulley 20 and the rotor shaft 21.
, And rolling bearings 22, 22 are disposed on both axial sides of the one-way clutch A. In the one-way clutch A, extension cylinders are provided on both sides in the axial direction of the outer ring 22, and rolling bearings 22, 22 are interposed between the extension cylinder and the rotor shaft 21. Further, the shaft body 1 of the one-way clutch A is a cylindrical member 1 a and is fitted around the outer periphery of the rotor shaft 21.
【００２６】この実施形態では、プーリ２０とロータ軸
２１との回転差に応じて、一方向クラッチＡがフリー状
態とロック状態とに切り替わり、プーリ２０からロータ
軸２１へ回転動力を伝達させたり遮断させたりするよう
になる。一般的なオルタネータでは、プーリ２０が、エ
ンジンのクランクシャフトによりベルト２３を介して回
転駆動されるため、例えばクランクシャフトの回転数が
低下すると、オルタネータの発電効率が低下するが、上
述したように一方向クラッチＡを内蔵させた場合だと、
プーリ２０の回転数が低下するとき、ロータ軸２１を自
身の慣性力によって回転数を高域に維持させるように一
方向クラッチＡを機能させることができるので、発電効
率の向上に貢献できるようになる。In this embodiment, the one-way clutch A is switched between a free state and a locked state in accordance with the rotation difference between the pulley 20 and the rotor shaft 21 to transmit or cut off rotational power from the pulley 20 to the rotor shaft 21. Or let them do it. In a general alternator, since the pulley 20 is rotationally driven by the crankshaft of the engine via the belt 23, for example, when the rotation speed of the crankshaft decreases, the power generation efficiency of the alternator decreases. If the direction clutch A is built in,
When the rotational speed of the pulley 20 decreases, the one-way clutch A can function so that the rotational speed of the rotor shaft 21 is maintained at a high range by its own inertial force, so that it is possible to contribute to improvement of power generation efficiency. Become.
【００２７】ところで、オルタネータの使用環境では、
急激な加減速が頻繁に繰り返されることによってベルト
２３を介してプーリ２０に瞬間的な衝撃が加わることが
あるが、そのような状況での使用においても、本発明の
一方向クラッチＡであれば、クラッチ機能の長期安定化
が可能であるから、結局、オルタネータによる発電作用
を効率良い状態に長期継続させることができるようにな
るなど、信頼性の向上に貢献できるようになる。By the way, in the use environment of the alternator,
The sudden acceleration / deceleration is frequently repeated, so that an instantaneous impact may be applied to the pulley 20 via the belt 23. In such a situation, the one-way clutch A of the present invention can be used. Since the clutch function can be stabilized for a long period of time, it is possible to contribute to the improvement of reliability, for example, the power generation operation of the alternator can be continued in an efficient state for a long period of time.
【００２８】[0028]
【発明の効果】請求項１〜４の発明では、ころがロック
した状態において瞬間的な衝撃が加わったときでも、こ
ろに圧痕が形成されにくくなるように工夫しているの
で、ころの挙動を長期にわたって安定に保つことができ
て、ころのロック、フリー動作を長期にわたって安定的
に行わせることができる。これにより、従来のように圧
痕の有無によってころそれぞれの外形がばらつくことを
抑制できるようになるから、ころ全体のロック、フリー
動作のタイミングをほぼ一定に保つことができる。これ
らの結果、クラッチ機能の長期安定化を実現できて、信
頼性の向上に貢献できるようになる。According to the first to fourth aspects of the present invention, even when an instantaneous impact is applied in a state where the rollers are locked, it is devised so that indentations are not easily formed on the rollers. The roller can be stably maintained for a long time, and the roller locking and free operation can be stably performed for a long time. This makes it possible to suppress the variation in the outer shape of each roller depending on the presence or absence of an indentation as in the related art, so that the timing of locking and free operation of the entire roller can be kept substantially constant. As a result, long-term stabilization of the clutch function can be realized, which contributes to improvement in reliability.
【００２９】特に、請求項２の発明では、くさび状空間
を形成するカム面を内輪部材の外周面に形成している構
造であるから、ころに対して回転遠心力が働いて、ころ
が外輪の内周面に押し付けられても、ころ位置が変わら
ずに済む。このため、前述の効果との相乗作用により、
クラッチ機能のさらなる長期安定化が可能となる。In particular, in the second aspect of the present invention, since the cam surface forming the wedge-shaped space is formed on the outer peripheral surface of the inner ring member, a rotational centrifugal force acts on the rollers, so that the rollers are driven by the outer ring. Even if it is pressed against the inner peripheral surface, the roller position does not change. Therefore, by the synergistic effect with the above-mentioned effect,
Further long-term stabilization of the clutch function becomes possible.
【図１】本発明の一実施形態の一方向クラッチを示す縦
断面図FIG. 1 is a longitudinal sectional view showing a one-way clutch according to an embodiment of the present invention.
【図２】図１の（２）−（２）線断面の矢視図FIG. 2 is a sectional view taken along line (2)-(2) of FIG.
【図３】同実施形態の保持器のころ配置部分を示す平面
展開図FIG. 3 is a developed plan view showing a roller arrangement portion of the cage according to the embodiment.
【図４】本発明の他の実施形態で、図１に対応する図FIG. 4 is a view corresponding to FIG. 1 in another embodiment of the present invention.
【図５】本発明の一方向クラッチを用いたプーリユニッ
トを示す上半分の断面図FIG. 5 is a sectional view of the upper half showing a pulley unit using the one-way clutch of the present invention.
Ａ 一方向クラッチ １ 軸体 ２ 外輪 ３ 保持器 ４ ころ ５ コイルバネ ６ バネ受け部材 ７ カム面 ８ 保持器のポケット ９ 保持器の凹部 A One-way clutch 1 Shaft 2 Outer ring 3 Cage 4 Roller 5 Coil spring 6 Spring receiving member 7 Cam surface 8 Cage pocket 9 Cage recess
Claims (3)
部材との間で、動力を伝達する状態と動力伝達を遮断す
る状態とに切り換える一方向クラッチであって、 内輪部材と外輪部材との間の対向空間の円周数カ所に、
周方向一方へ向けて間隔が狭くなるくさび状空間が設け
られており、 この各くさび状空間それぞれに配設されるころの硬度
が、硬化処理により高く設定されている、ことを特徴と
する一方向クラッチ。1. A one-way clutch for switching between a state where power is transmitted and a state where power transmission is interrupted between an inner ring member and an outer ring member arranged inside and outside in a radial direction, the one-way clutch comprising: an inner ring member; an outer ring member; In several places around the opposite space between
A wedge-shaped space in which the interval is narrowed toward one side in the circumferential direction is provided, and the hardness of the rollers provided in each of the wedge-shaped spaces is set to be high by a hardening process. Direction clutch.
部材との間で、動力を伝達する状態と動力伝達を遮断す
る状態とに切り換える一方向クラッチであって、 複数のころと、ころ収納用のポケットを有する保持器
と、内輪部材の外周面において前記ポケットに対応する
領域に設けられかつ外輪部材との間で周方向一方へ向け
て間隔が狭くなるくさび状空間を形成するカム面と、こ
ろをくさび状空間の狭い側へ押圧する押圧部材とを備
え、 前記ころの硬度が、硬化処理により高く設定されてい
る、ことを特徴とする一方向クラッチ。2. A one-way clutch for switching between a state in which power is transmitted and a state in which power transmission is interrupted between an inner ring member and an outer ring member arranged inside and outside in a radial direction, comprising: a plurality of rollers; A retainer having a pocket for storage, and a cam surface which is provided in a region corresponding to the pocket on the outer peripheral surface of the inner ring member and forms a wedge-shaped space in which the distance between the outer ring member and the outer ring member decreases in one circumferential direction. And a pressing member for pressing the rollers to the narrow side of the wedge-shaped space, wherein the hardness of the rollers is set high by a hardening process.
部材との間で、動力を伝達する状態と動力伝達を遮断す
る状態とに切り換える一方向クラッチであって、 複数のころと、ころ収納用のポケットを有する保持器
と、外輪部材の内周面において前記ポケットに対応する
領域に設けられかつ内輪部材との間で周方向一方へ向け
て間隔が狭くなるくさび状空間を形成するカム面と、こ
ろをくさび状空間の狭い側へ押圧する押圧部材とを備
え、 前記ころの硬度が、硬化処理により高く設定されてい
る、ことを特徴とする一方向クラッチ。3. A one-way clutch for switching between a state where power is transmitted and a state where power transmission is interrupted between an inner race member and an outer race member arranged inside and outside in a radial direction, the plurality of rollers and the rollers. A retainer having a pocket for storage, and a cam provided in a region corresponding to the pocket on the inner peripheral surface of the outer ring member and forming a wedge-shaped space having a narrower space in one circumferential direction between the inner ring member and the retainer A one-way clutch, comprising: a surface; and a pressing member that presses the rollers toward a narrow side of the wedge-shaped space, wherein the hardness of the rollers is set high by a hardening process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9228188A JPH1163026A (en) | 1997-08-25 | 1997-08-25 | Unidirectional clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9228188A JPH1163026A (en) | 1997-08-25 | 1997-08-25 | Unidirectional clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1163026A true JPH1163026A (en) | 1999-03-05 |
Family
ID=16872596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9228188A Pending JPH1163026A (en) | 1997-08-25 | 1997-08-25 | Unidirectional clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1163026A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003025433A1 (en) * | 2001-09-11 | 2003-03-27 | Nsk Ltd. | Pulley apparatus with built-in roller clutch and assembly method thereof |
| WO2003067128A1 (en) * | 2002-01-21 | 2003-08-14 | Nsk Ltd. | Engine start roller clutch-housed type rotation transmission device |
| US6957728B2 (en) | 2001-09-17 | 2005-10-25 | Nsk Ltd. | Pulley apparatus with built-in roller clutch and the assembly method thereof |
| JP2006138384A (en) * | 2004-11-11 | 2006-06-01 | Ntn Corp | Clutch |
| JP2008032210A (en) * | 2006-06-28 | 2008-02-14 | Jtekt Corp | One-way clutch |
-
1997
- 1997-08-25 JP JP9228188A patent/JPH1163026A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003025433A1 (en) * | 2001-09-11 | 2003-03-27 | Nsk Ltd. | Pulley apparatus with built-in roller clutch and assembly method thereof |
| US6880689B2 (en) | 2001-09-11 | 2005-04-19 | Nsk Ltd. | Pulley apparatus with built-in roller clutch and assembly method thereof |
| US6957728B2 (en) | 2001-09-17 | 2005-10-25 | Nsk Ltd. | Pulley apparatus with built-in roller clutch and the assembly method thereof |
| WO2003067128A1 (en) * | 2002-01-21 | 2003-08-14 | Nsk Ltd. | Engine start roller clutch-housed type rotation transmission device |
| US7370741B2 (en) | 2002-01-21 | 2008-05-13 | Nsk Ltd. | Engine start roller clutch-housed type rotation transmission device |
| JP2006138384A (en) * | 2004-11-11 | 2006-06-01 | Ntn Corp | Clutch |
| JP2008032210A (en) * | 2006-06-28 | 2008-02-14 | Jtekt Corp | One-way clutch |
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