JP2006170372A - One-way clutch - Google Patents

One-way clutch Download PDF

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JP2006170372A
JP2006170372A JP2004366435A JP2004366435A JP2006170372A JP 2006170372 A JP2006170372 A JP 2006170372A JP 2004366435 A JP2004366435 A JP 2004366435A JP 2004366435 A JP2004366435 A JP 2004366435A JP 2006170372 A JP2006170372 A JP 2006170372A
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molybdenum
way clutch
sprag
film
ring
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Nobuyuki Yamane
伸志 山根
Yoshihisa Miura
義久 三浦
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JTEKT Corp
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JTEKT Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent reduction of coefficient of friction of sprag in lubricating oil containing molybdenum. <P>SOLUTION: This one-way clutch 5 transmits rotation power between an outer ring 1 and an inner ring 3 and shuts off its transmission by friction contact for both members of an engaging piece 5a provided between the outer ring 1 and the inner ring 3 in lubricating oil containing molybdenum. A surface treatment film 5a1 for preventing formation of a molybdenum film is formed in at least one section among the engaging piece 5a, an outer peripheral face of the inner ring 3, and an inner peripheral face of the outer ring 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、一方向クラッチに関するものである。一方向クラッチは、動力の伝達遮断媒介用部品として、自動車のプーリユニット、自動変速機、エンジンスタータ等に組み込まれる。一方向クラッチは、一方が駆動側で他方が従動側となる内・外輪間に介装される係合子として例えばスプラグを備え、内・外輪の相対回転に応じたスプラグの傾動運動により、内・外輪の一方側の回転動力を他方側に伝達ないし遮断する。本明細書では、係合子が内・外輪に噛み込んで該内・外輪が一体回転する状態に連結されて回転動力が伝達される状態をロック状態と言い、係合子の上記噛み込みが解除されて回転動力の伝達が遮断される状態をフリー状態と言う。   The present invention relates to a one-way clutch. The one-way clutch is incorporated in a pulley unit, an automatic transmission, an engine starter, or the like of an automobile as a power transmission blocking medium part. The one-way clutch has, for example, a sprag as an interposer interposed between the inner and outer rings, one on the drive side and the other on the driven side, and the inner and outer rings are tilted according to the relative rotation of the inner and outer rings. Rotational power on one side of the outer ring is transmitted or cut off to the other side. In this specification, a state in which the engaging element is engaged with the inner / outer ring and the inner / outer ring is connected to rotate integrally and the rotational power is transmitted is called a locked state, and the engagement of the engaging element is released. A state where the transmission of rotational power is interrupted is called a free state.

一方向クラッチを備えた従来の動力伝達装置は、一般に、内・外輪間に、一方向クラッチを介装し、この一方向クラッチの軸方向両側に転がり軸受を配置し、一方向クラッチの動作により内・外輪間での動力の伝達と遮断とを行う（特許文献１参照）。このような動力伝達装置は、例えば自動車の例えばオートマチックトランスミッション等の各種補機ケースに格納されて、内・外輪間に介装した係合子例えばスプラグの傾動運動により駆動側の回転動力を従動側に伝達ないし遮断動作をする。ロック状態はスプラグが内・外輪の内径面と外径面とに噛み込むことにより行うものであるから、スプラグの外表面が内・外輪の軌道面と滑りを起こさない摩擦係数を有することが要求される。その一方で、補機ケースには該ケースに収納した部品の潤滑油が充填されており、一方向クラッチにおいても潤滑油を潤滑に用いる。このような潤滑油においては、近時、省燃費性能の向上を目的として低摩擦化を図るべく、モリブデン、例えば二硫化モリブデンやＭｏＤＴＣ（モリブデンジチオカーバメイト）やＭｏＤＴＰ（モリブデンジチオフォスフェート）などの有機モリブデンが添加された潤滑油が使用されてきている。このモリブデンが添加された潤滑油をスプラグ型の一方向クラッチの潤滑に用いた場合、内・外輪とスプラグとの金属接触部位において、モリブデンが金属表面に吸着したり、機械的に押しつけられたり、あるいは化学反応を起こして金属接触部位に二硫化モリブデン層等のモリブデン化合物層が形成され、このモリブデン化合物層が摩擦係数を低減させてしまう。金属接触部位にモリブデン化合物層が形成されると、スプラグと内外輪間の摩擦係数が減少し、その外表面が内・外輪の軌道面で滑りが発生して、動力伝達ができなくなるという課題がある。
特開２００３−２８１９９号公報 A conventional power transmission device having a one-way clutch generally has a one-way clutch interposed between inner and outer rings, and rolling bearings are arranged on both sides in the axial direction of the one-way clutch. Power is transmitted and cut off between the inner and outer rings (see Patent Document 1). Such a power transmission device is housed in various accessory cases such as an automatic transmission of an automobile, for example, and the rotational power on the driving side is moved to the driven side by the tilting motion of an engagement member such as a sprag interposed between the inner and outer wheels. Transmit or cut off. Since the sprag is engaged by the sprags engaging the inner and outer diameter surfaces of the inner and outer rings, the outer surface of the sprags must have a coefficient of friction that does not cause slippage with the raceway surfaces of the inner and outer rings. Is done. On the other hand, the auxiliary machine case is filled with lubricating oil for components housed in the case, and the lubricating oil is used for lubrication even in the one-way clutch. In recent years, in such lubricating oils, molybdenum, for example, organic molybdenum such as molybdenum disulfide, MoDTC (molybdenum dithiocarbamate), or MoDTP (molybdenum dithiophosphate) has been used to reduce friction for the purpose of improving fuel economy. Has been used. When this lubricating oil added with molybdenum is used for lubrication of a sprag type one-way clutch, molybdenum is adsorbed on the metal surface or mechanically pressed at the metal contact portion between the inner and outer rings and the sprag. Alternatively, a chemical reaction is caused to form a molybdenum compound layer such as a molybdenum disulfide layer at the metal contact site, and this molybdenum compound layer reduces the friction coefficient. When a molybdenum compound layer is formed at the metal contact site, the coefficient of friction between the sprags and the inner and outer rings decreases, and the outer surface slips on the raceway surfaces of the inner and outer rings, making it impossible to transmit power. is there.
JP 2003-28199 A

本発明は、一方向クラッチの係合子として例えばスプラグの外表面がモリブデン含有潤滑油により内・外輪の軌道面に対する摩擦係数が低減されるのを防止することを解決すべき課題としている。   An object of the present invention is to prevent a friction coefficient of the outer surface of a sprag as an engagement member of a one-way clutch from being reduced by a molybdenum-containing lubricating oil with respect to a raceway surface of inner and outer rings.

本発明による一方向クラッチは、モリブデン含有の潤滑油中で用いられ、かつ、内・外輪間に介装した係合子により両輪間での動力の伝達遮断を媒介する一方向クラッチにおいて、内輪外周面、外輪内周面、係合子の外表面の少なくとも一つの部位にモリブデン被膜の生成を阻害する表面処理膜を形成した、ことを特徴とするものである。   The one-way clutch according to the present invention is a one-way clutch that is used in a lubricating oil containing molybdenum and mediates a power transmission interruption between both wheels by an engagement member interposed between the inner and outer rings. The surface treatment film that inhibits the formation of the molybdenum coating is formed on at least one portion of the inner peripheral surface of the outer ring and the outer surface of the engagement element.

また、本発明による一方向クラッチは、モリブデン含有の潤滑油中で用いられ、かつ、内・外輪間に介装したスプラグにより両輪間での動力の伝達遮断を媒介する一方向クラッチにおいて、内輪外周面、外輪内周面、スプラグの外表面の少なくとも一つの部位にモリブデン被膜の生成を阻害する表面処理膜を形成した、ことを特徴とするものである。   The one-way clutch according to the present invention is a one-way clutch that is used in molybdenum-containing lubricating oil and that mediates power transmission interruption between both wheels by a sprag interposed between the inner and outer rings. A surface treatment film that inhibits the formation of a molybdenum coating is formed on at least one portion of the surface, the outer peripheral surface of the outer ring, and the outer surface of the sprag.

上記係合子としては、スプラグ、ローラ（ころ）などが含まれる。   Examples of the engagement element include a sprag and a roller.

本発明によると、上記表面処理膜により、係合子例えばスプラグと内・外輪とが接触してもモリブデンとの反応を抑制できるため、モリブデン被膜の生成を阻害することができ、これによって係合子または内・外輪の外表面の摩擦係数の低下を防止し、係合子の内・外輪に対する滑りを起こりにくくし、内・外輪間での動力伝達性能を発揮することができる。本発明はまた、一方向クラッチがモリブデン含有潤滑油で潤滑される自動車の補機ケースに組み込まれても、一方向クラッチを大型化することなく内・外輪間での動力伝達性能を発揮することができる。   According to the present invention, the surface treatment film can suppress the reaction with molybdenum even when the engagement piece, for example, the sprag and the inner / outer ring contacts, thereby inhibiting the generation of the molybdenum coating. It is possible to prevent the friction coefficient of the outer surfaces of the inner and outer rings from being lowered, to prevent the engagement element from slipping with respect to the inner and outer rings, and to exhibit power transmission performance between the inner and outer rings. The present invention also demonstrates power transmission performance between the inner and outer wheels without increasing the size of the one-way clutch even when the one-way clutch is incorporated in an automobile accessory case lubricated with molybdenum-containing lubricant. Can do.

なお、潤滑油の一例としてエンジンオイルが挙げられるが、その他のモリブデン含有潤滑油に適用できる。   In addition, although engine oil is mentioned as an example of lubricating oil, it is applicable to other molybdenum containing lubricating oil.

本発明によれば、一方向クラッチの係合子例えばスプラグまたは内・外輪の外表面に対してモリブデン被膜の生成を阻害できるので、モリブデンを含有した潤滑油中においても、内・外輪間での動力伝達性能を良好に発揮することができる。   According to the present invention, it is possible to inhibit the formation of a molybdenum coating on the outer surface of an engagement member such as a sprag or an inner / outer ring of a one-way clutch. Therefore, even in a lubricating oil containing molybdenum, The transmission performance can be exhibited well.

以下、添付した図面を参照して、本発明の実施の形態に係るスプラグ型一方向クラッチを詳細に説明する。   Hereinafter, a sprag type one-way clutch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

本発明の実施の形態に係るスプラグ型一方向クラッチを図１ないし図３を参照して説明する。図１は、スプラグ型一方向クラッチの正面断面図、図２は、図１のＡ−Ａ線に沿う側面断面図、図３はスプラグの断面図である。これらの図を参照して、外輪１と内輪３との間に一方向クラッチ５が介装されている。一方向クラッチ５は、複数のスプラグ５ａと、スプラグ５ａを外径側と内径側でそれぞれ保持する外保持器５ｂおよび内保持器５ｃと、外保持器５ｂと内保持器５ｃとの間に配置されてスプラグ５ａをロック側に付勢する環状のリボンスプリング５ｄとから構成されている。外保持器５ｂ、内保持器５ｃおよびリボンスプリング５ｄは、それぞれ、ポケット孔５ｂ１，５ｃ１，５ｄ１を有する。外保持器５ｂは、半径方向外向きの鍔部５ｂ２を、また、内保持器５ｃは、半径方向内向きの鍔部５ｃ２をそれぞれ有する。   A sprag type one-way clutch according to an embodiment of the present invention will be described with reference to FIGS. 1 is a front sectional view of a sprag type one-way clutch, FIG. 2 is a side sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view of a sprag. With reference to these drawings, a one-way clutch 5 is interposed between an outer ring 1 and an inner ring 3. The one-way clutch 5 is disposed between the plurality of sprags 5a, the outer cage 5b and the inner cage 5c that hold the sprags 5a on the outer diameter side and the inner diameter side, and the outer cage 5b and the inner cage 5c. And an annular ribbon spring 5d that urges the sprag 5a toward the lock side. The outer cage 5b, the inner cage 5c, and the ribbon spring 5d have pocket holes 5b1, 5c1, and 5d1, respectively. The outer cage 5b has a radially outward flange portion 5b2, and the inner cage 5c has a radially inward flange portion 5c2.

以上の構成を備えたスプラグ型一方向クラッチにおいては、例えば外輪１が一方方向に回転すると、スプラグ５ａが外輪１と摩擦接触することにより、リボンスプリング５ｄの弾性に付勢されつつ起立する方向に傾動して内・外輪１，３に噛み込まされて当該内外輪１，３を一体回転可能に連結する。この連結により、回転動力が外輪１から一方向クラッチ５を介して内輪３に伝達される。外輪１が他方方向に回転すると、スプラグ５ａはリボンスプリング５ｄの弾性に抗して、上記噛み込み方向とは反対の方向に傾動して噛み込みが解除され、内・外輪１，３を相対回転可能とする。これにより、回転駆動源の回転動力は内輪３に伝達されない。   In the sprag type one-way clutch having the above configuration, for example, when the outer ring 1 rotates in one direction, the sprag 5a comes into frictional contact with the outer ring 1 so that the sprag 5a rises while being urged by the elasticity of the ribbon spring 5d. The inner and outer rings 1 and 3 are tilted and engaged with the inner and outer rings 1 and 3 so as to be integrally rotatable. By this connection, rotational power is transmitted from the outer ring 1 to the inner ring 3 via the one-way clutch 5. When the outer ring 1 rotates in the other direction, the sprag 5a is tilted in the direction opposite to the above-mentioned direction of engagement against the elasticity of the ribbon spring 5d and the engagement is released, and the inner and outer rings 1, 3 are relatively rotated. Make it possible. Thereby, the rotational power of the rotational drive source is not transmitted to the inner ring 3.

以上の構成を備えたスプラグ型一方向クラッチにおいては、スプラグ５ａの外表面にモリブデン被膜の生成を阻害する表面処理膜５ａ１が形成されている。表面処理膜５ａ１は、摩耗すると、スプラグ５ａ外表面にモリブデン被膜が生成され易くなるので、表面処理膜５ａ１の摩耗を抑制するべく、その表面処理膜５ａ１には、硬質表面改質被膜、硬質窒化被膜、硬質酸化被膜、硬質鍍金被膜等、モリブデン被膜生成阻害性に加えて高耐摩耗性の被膜を形成することが好ましい。スプラグは鋼材からなり、その鋼種に限定されない。   In the sprag type one-way clutch having the above configuration, a surface treatment film 5a1 that inhibits the formation of a molybdenum film is formed on the outer surface of the sprag 5a. When the surface treatment film 5a1 is worn, a molybdenum film is likely to be formed on the outer surface of the sprag 5a. Therefore, in order to suppress wear of the surface treatment film 5a1, the surface treatment film 5a1 includes a hard surface modified film, hard nitriding. It is preferable to form a highly abrasion-resistant film in addition to the molybdenum film formation inhibiting property, such as a film, a hard oxide film, and a hard plating film. Sprags are made of steel and are not limited to that steel type.

硬質表面改質被膜は、例えばＤＬＣ（ダイヤモンドライクカーボン）のような硬質炭素膜や窒化膜やセラミックコーティングが挙げられ、スパッタリング、イオンプレーティング、等の物理的蒸着法（ＰＶＤ法）、または高周波プラズマＣＶＤ、光ＣＶＤ等の化学的蒸着法（ＣＶＤ法）により、形成することができる。硬質表面処理被膜は、高い耐摩耗性、耐焼付き性、高い被膜硬さを有しており、スプラグ５ａと内・外輪１，３とが金属接触して摺動してもモリブデンとの反応を抑制するため、モリブデン被膜の生成を抑制して、スプラグ５ａ外表面の摩擦係数の低下を防止することができる。硬質酸化被膜は、スプラグを酸化雰囲気中で酸化することができる。鍍金被膜にはＣＶＤ（化学蒸着）やＰＶＤ（物理蒸着）等の乾式鍍金、電気鍍金や化学（無電解）鍍金等の湿式鍍金がある。鍍金に用いる金属には、ニッケルがあり、無電解ニッケル鍍金被膜をスプラグ５ａの外表面に形成することにより、高い耐摩耗性、耐焼付き性、高い被膜硬さを有し、スプラグ５ａと内・外輪１，３とが接触して摺動してもモリブデンとの反応を抑制するため、モリブデン被膜の生成を抑制して、スプラグ外表面の摩擦係数の低下を防止することができる。硬質鍍金被膜には硬質クロム鍍金被膜も適用することができる。この硬質クロム鍍金被膜も高い耐摩耗性、耐焼付き性、高い被膜硬さを有し、スプラグ５ａと内・外輪１，３とが接触して摺動してもモリブデンとの反応を抑制するため、モリブデン被膜の生成を抑制して、スプラグ５ａ外表面の摩擦係数の低下を防止することができる。また、接触部位に摩耗を生じた場合、金属同士の接触では活性な表面が露出してモリブデン被膜が形成されやすいが、モリブデン被膜の生成を阻害する表面処理を施した場合にはモリブデン被膜の形成が効果的に防止できる。   Examples of the hard surface modified film include a hard carbon film such as DLC (diamond-like carbon), a nitride film, and a ceramic coating, and a physical vapor deposition method (PVD method) such as sputtering, ion plating, or high-frequency plasma. It can be formed by a chemical vapor deposition method (CVD method) such as CVD or photo-CVD. The hard surface-treated film has high wear resistance, seizure resistance, and high film hardness, and does not react with molybdenum even if the sprag 5a and the inner / outer rings 1, 3 slide in contact with metal. In order to suppress, the production | generation of a molybdenum film can be suppressed and the fall of the friction coefficient of the sprag 5a outer surface can be prevented. The hard oxide film can oxidize the sprags in an oxidizing atmosphere. As the plating film, there are dry plating such as CVD (chemical vapor deposition) and PVD (physical vapor deposition), and wet plating such as electric plating and chemical (electroless) plating. The metal used for plating includes nickel. By forming an electroless nickel plating film on the outer surface of the sprag 5a, it has high wear resistance, seizure resistance, and high film hardness. Even if the outer rings 1 and 3 come into contact with each other and slide, the reaction with molybdenum is suppressed, so that the formation of a molybdenum coating can be suppressed and the reduction of the friction coefficient on the outer surface of the sprag can be prevented. A hard chrome plating film can also be applied to the hard plating film. This hard chrome plated coating also has high wear resistance, seizure resistance and high coating hardness, and suppresses the reaction with molybdenum even if the sprag 5a and the inner / outer rings 1, 3 slide in contact with each other. The generation of the molybdenum coating can be suppressed, and the reduction of the friction coefficient on the outer surface of the sprag 5a can be prevented. In addition, when wear occurs at the contact site, the active surface is exposed by metal-to-metal contact, and a molybdenum coating is likely to be formed. However, when a surface treatment that inhibits the formation of the molybdenum coating is applied, the formation of the molybdenum coating is performed. Can be effectively prevented.

表面処理膜５ａ１は、スプラグ５ａの母材である鋼材よりも軟質な銅あるいは銀鍍金皮膜を形成するものでもよい。   The surface treatment film 5a1 may form a copper or silver plating film that is softer than the steel material that is the base material of the sprag 5a.

以上のごとく、上記実施の形態によると、スプラグ５ａの少なくとも内外輪１，３と摩擦接触する外表面にモリブデン被膜の生成を阻害して潤滑油による摩擦係数の低減を防止する表面処理膜５ａ１が形成されているので、スプラグ５ａと内・外輪１，３とが接触してもモリブデンとの反応を抑制するためモリブデン被膜の生成を抑制することができ、これによってスプラグ５ａ外表面の摩擦係数の低下を防止し、スプラグ５ａの内・外輪１，３に対する滑りを起こりにくくし、内外輪での動力伝達性能を良好に発揮することができる。   As described above, according to the above-described embodiment, the surface treatment film 5a1 that inhibits the generation of the molybdenum film on the outer surface that is in frictional contact with at least the inner and outer rings 1 and 3 of the sprag 5a and prevents the friction coefficient from being reduced by the lubricating oil. Since it is formed, it is possible to suppress the formation of a molybdenum film in order to suppress the reaction with molybdenum even if the sprag 5a contacts the inner / outer rings 1 and 3, thereby reducing the friction coefficient of the outer surface of the sprag 5a. It is possible to prevent the reduction, prevent the sprag 5a from slipping with respect to the inner and outer rings 1 and 3, and to exert the power transmission performance in the inner and outer rings satisfactorily.

以上において、本発明は上記実施の形態だけに限定されるものではなく、特許請求の範囲を超えない種々な変更を含むものである。   In the above, the present invention is not limited to the above-described embodiment, but includes various modifications that do not exceed the scope of the claims.

例えば、本文中では係合子としてスプラグに着目した実施形態を示したが、表面処理を内輪、外輪、係合子のうち少なくとも１つ、又はこれらの組み合わせに対して施してもよい。また、スプラグタイプの一方向クラッチに限らず、他形式の一方向クラッチにも適用できる。   For example, although an embodiment focusing on sprags as an engagement element is shown in the text, surface treatment may be performed on at least one of an inner ring, an outer ring, an engagement element, or a combination thereof. Further, the present invention can be applied not only to the sprag type one-way clutch but also to other types of one-way clutches.

他形式の一方向クラッチの一例としては、図４に示すようなローラタイプの一方向クラッチ６挙げられる。すなわち、図４を参照して、外輪１、内輪３、一方向クラッチ６がユニット化され、一方向クラッチ６は、外輪１と内輪３との対向環状空間７の軸方向中央に介装されるもので、側面視多角形（八角形など）に外周面を形成した内輪３外周各面をカム面３ａ、各カム面３ａと外輪１の内周面１ａとの対向空間にくさび状空間を形成し、各くさび状空間内に係合子としてのころ６ａを保持器６ｂによって周方向転動範囲が規制された状態で収納されたものである。各ころ６ａは保持器６ｂに設けたコイルバネ６ｃによりくさび状空間の狭い側（ロック側）に押圧されている。そして、内輪外周面（カム面３ａ）、外輪内周面１ａ、ころ６ａの外周面の少なくとも１つの部位にモリブデン被膜の生成を阻害する表面処理膜６ａ１を形成している。図４ではころ６ａの外周面に表面処理膜６ａ１を形成したものを示している。この場合、内輪３と外輪１との間の環状空間７において一方向クラッチ６の軸方向両側に玉などの転動体を介在させてそれぞれに転がり軸受を設けた構成としてもよい。   An example of another type of one-way clutch is a roller-type one-way clutch 6 as shown in FIG. That is, referring to FIG. 4, the outer ring 1, the inner ring 3, and the one-way clutch 6 are unitized, and the one-way clutch 6 is interposed in the axial center of the opposed annular space 7 between the outer ring 1 and the inner ring 3. Therefore, each outer peripheral surface of the inner ring 3 having an outer peripheral surface formed in a polygon (such as an octagon) when viewed from the side is a cam surface 3a, and a wedge-shaped space is formed in the space between each cam surface 3a and the inner peripheral surface 1a of the outer ring 1. In each wedge-shaped space, the rollers 6a as the engagement elements are accommodated in a state where the circumferential rolling range is restricted by the cage 6b. Each roller 6a is pressed to the narrow side (lock side) of the wedge-shaped space by a coil spring 6c provided in the cage 6b. And the surface treatment film | membrane 6a1 which inhibits the production | generation of a molybdenum film is formed in the at least 1 site | part of the inner ring outer peripheral surface (cam surface 3a), the outer ring inner peripheral surface 1a, and the outer peripheral surface of the roller 6a. FIG. 4 shows a surface treatment film 6a1 formed on the outer peripheral surface of the roller 6a. In this case, in the annular space 7 between the inner ring 3 and the outer ring 1, a rolling bearing such as a ball may be provided on both sides in the axial direction of the one-way clutch 6 to provide rolling bearings.

本発明の実施の形態に係る一方向クラッチの断面図である。It is sectional drawing of the one way clutch which concerns on embodiment of this invention. 図１のＡ−Ａ線の断面図である。It is sectional drawing of the AA line of FIG. スプラグの断面図である。It is sectional drawing of a sprag. 本発明の他の実施の形態に係る一方向クラッチの断面図である。It is sectional drawing of the one-way clutch which concerns on other embodiment of this invention.

符号の説明Explanation of symbols

１ 外輪
３ 内輪
５ 一方向クラッチ
５ａ スプラグ（係合子）
５ａ１ 表面処理膜

1 Outer ring 3 Inner ring 5 One-way clutch 5a Sprag (engagement element)
5a1 Surface treatment film

Claims (2)

モリブデン含有の潤滑油中で用いられ、かつ、内・外輪間に介装した係合子により両輪間での動力の伝達遮断を媒介する一方向クラッチにおいて、内輪外周面、外輪内周面、係合子の外表面の少なくとも一つの部位にモリブデン被膜の生成を阻害する表面処理膜を形成した、ことを特徴とする一方向クラッチ。   In a one-way clutch that is used in molybdenum-containing lubricating oil and mediates the interruption of power transmission between the two wheels by an engagement element interposed between the inner and outer rings, the inner ring outer circumferential surface, the outer ring inner circumferential surface, and the engagement element A one-way clutch, characterized in that a surface treatment film that inhibits the formation of a molybdenum film is formed on at least one portion of the outer surface of the first clutch. モリブデン含有の潤滑油中で用いられ、かつ、内・外輪間に介装したスプラグにより両輪間での動力の伝達遮断を媒介する一方向クラッチにおいて、内輪外周面、外輪内周面、スプラグの外表面の少なくとも一つの部位にモリブデン被膜の生成を阻害する表面処理膜を形成した、ことを特徴とする一方向クラッチ。
In a one-way clutch that is used in molybdenum-containing lubricating oil and mediates the transmission of power between the two wheels by a sprag that is interposed between the inner and outer rings, the inner ring outer peripheral surface, the outer ring inner peripheral surface, A one-way clutch, wherein a surface treatment film that inhibits the formation of a molybdenum coating is formed on at least one portion of the surface.
JP2004366435A 2004-12-17 2004-12-17 One-way clutch Pending JP2006170372A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007002892A (en) * 2005-06-22 2007-01-11 Nsk Warner Kk One-way clutch
WO2008044738A1 (en) * 2006-10-13 2008-04-17 Jtekt Corporation One-way clutch
CN101328938B (en) * 2007-06-22 2010-09-29 比亚迪股份有限公司 Tri-state overrunning clutch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001165200A (en) * 1999-12-13 2001-06-19 Koyo Seiko Co Ltd One-way clutch
JP2001316686A (en) * 2000-04-28 2001-11-16 Shojiro Miyake Sliding member with hard carbon film
JP2004197802A (en) * 2002-12-17 2004-07-15 Nsk Ltd One-way clutch device for cranking motor
JP2004353800A (en) * 2003-05-30 2004-12-16 Koyo Seiko Co Ltd Bearing and its manufacturing method
JP2004353456A (en) * 2003-05-27 2004-12-16 Nissan Motor Co Ltd Combination of low friction sliding cam followers and lubricating oil composition used for the combination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001165200A (en) * 1999-12-13 2001-06-19 Koyo Seiko Co Ltd One-way clutch
JP2001316686A (en) * 2000-04-28 2001-11-16 Shojiro Miyake Sliding member with hard carbon film
JP2004197802A (en) * 2002-12-17 2004-07-15 Nsk Ltd One-way clutch device for cranking motor
JP2004353456A (en) * 2003-05-27 2004-12-16 Nissan Motor Co Ltd Combination of low friction sliding cam followers and lubricating oil composition used for the combination
JP2004353800A (en) * 2003-05-30 2004-12-16 Koyo Seiko Co Ltd Bearing and its manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007002892A (en) * 2005-06-22 2007-01-11 Nsk Warner Kk One-way clutch
US7584831B2 (en) * 2005-06-22 2009-09-08 Nsk-Warner K.K. One-way clutch
WO2008044738A1 (en) * 2006-10-13 2008-04-17 Jtekt Corporation One-way clutch
JP2008095865A (en) * 2006-10-13 2008-04-24 Jtekt Corp One-way clutch
US8307968B2 (en) 2006-10-13 2012-11-13 Jtekt Corporation One-way clutch
CN101328938B (en) * 2007-06-22 2010-09-29 比亚迪股份有限公司 Tri-state overrunning clutch

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