JP2899041B2 - clutch - Google Patents
clutchInfo
- Publication number
- JP2899041B2 JP2899041B2 JP2048679A JP4867990A JP2899041B2 JP 2899041 B2 JP2899041 B2 JP 2899041B2 JP 2048679 A JP2048679 A JP 2048679A JP 4867990 A JP4867990 A JP 4867990A JP 2899041 B2 JP2899041 B2 JP 2899041B2
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- lubricant
- outer ring
- gap
- inner member
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
- F16D41/067—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明はクラッチに関し、特に潤滑剤の選定により
大きな負荷容量を保つようにしたクラッチに関するもの
である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch, and more particularly to a clutch capable of maintaining a large load capacity by selecting a lubricant.
クラッチの一例を添付図面の第１図に基づいて説明す
ると、図示のように、内方部材１の外径面に多角形カム
面２を設けて外輪３の内径面との間にくさび形間隙４を
形成し、この間隙４にニードルローラ、スプラグ等の係
合素子５を収納し、その係合素子５の保持器６のポケッ
ト７内に収納したばね部材８により、係合素子５をくさ
び角が小さくなる方向に付勢する。内方部材１と外輪３
との間隙、特に上記のくさび形間隙４には、クラッチの
作動の円滑、錆防止のため、少なくとも潤滑剤９が充填
される。An example of the clutch will be described with reference to FIG. 1 of the accompanying drawings. As shown in the drawing, a polygonal cam surface 2 is provided on an outer diameter surface of an inner member 1 and a wedge-shaped gap is formed between the clutch and an inner diameter surface of an outer ring 3. The engaging element 5 such as a needle roller or a sprag is housed in the gap 4, and the engaging element 5 is wedge-engaged by a spring member 8 housed in a pocket 7 of a retainer 6 of the engaging element 5. Energize in a direction to reduce the angle. Inner member 1 and outer ring 3
, In particular, the wedge-shaped gap 4 described above is filled with at least a lubricant 9 for smooth operation of the clutch and prevention of rust.
上記のごとき一方向クラッチにおいて、係合素子５の
接触点ａ、ｂにおける接線l1、l2のなす角の1/2の角度
（ストラット角）αの正接、即ち、tan αが係合素子５
に対する摩擦係数μより小さいこと、即ち tan α＜μ ……（１） であることが、クラッチが正常に作動する条件であり、
この条件を満足しない場合にはクラッチにすべりが発生
する。In the one-way clutch as described above, the tangent of an angle (strut angle) α of half the angle between the tangent lines l 1 and l 2 at the contact points a and b of the engagement element 5, that is, 5
Is smaller than the friction coefficient μ, that is, tan α <μ (1) is a condition under which the clutch operates normally.
If this condition is not satisfied, the clutch will slip.
また、一方向クラッチの許容トルクＴとストラット角
αは、 Ｔ＝Atan α ……（２） の関係がある。Further, the allowable torque T of the one-way clutch and the strut angle α have a relationship of T = Atan α (2).
一方向クラッチにおいて従来から使用されている潤滑
剤は、低μの潤滑剤である。そのために負荷容量を大き
くとろうとしても、（１）式の関係を満たす必要上、一
定の限度があった。Lubricants conventionally used in one-way clutches are low-μ lubricants. For this reason, even if an attempt is made to increase the load capacity, there is a certain limit in satisfying the relationship of equation (1).
そこで、この発明は潤滑剤の作用によりクラッチ作動
時のみ高いμが得られるようにした一方向クラッチを提
供することを技術的課題とする。Therefore, it is a technical object of the present invention to provide a one-way clutch in which a high μ can be obtained only when the clutch is operated by the action of a lubricant.
上記の課題を解決するために、この発明は内方部材と
外輪の間に形成された間隙に係合素子を収納し、その係
合素子を上記内方部材と外輪との間に係合する方向に付
勢したクラッチにおいて、上記の間隙に高面圧下で硬着
性を示す潤滑剤を充填した構成としたものである。In order to solve the above-mentioned problem, the present invention accommodates an engaging element in a gap formed between an inner member and an outer ring, and engages the engaging element between the inner member and the outer ring. In the clutch urged in the direction, the gap is filled with a lubricant exhibiting hard adhesion under a high surface pressure.
第２図は第１図と同様の一方向クラッチの場合であ
り、構成は従来の場合と同様である。従って、同じ部分
には同じ符号を付している。異なる点は、潤滑剤10とし
て、高面圧下で硬着性を示すものを使用する。このよう
な硬着性潤滑剤10は、トラクションオイル、トラクショ
ングリースとして知られているもので、例えばモンサン
ト社製の「サントトラックグリース」がある。FIG. 2 shows a case of a one-way clutch similar to FIG. 1, and the configuration is the same as that of the conventional case. Therefore, the same parts are denoted by the same reference numerals. The difference is that a lubricant 10 that shows a firm adhesion under a high surface pressure is used. Such a hardening lubricant 10 is known as a traction oil or a traction grease, for example, “Santo Truck Grease” manufactured by Monsanto.
「サントトラックグリース」は、合成油を基油として
ちょう度向上剤が添加されたものであり、その代表的性
状は次のとおりである。"Santolk grease" is obtained by adding a consistency improver to a synthetic oil as a base oil, and its typical properties are as follows.
増ちょう剤 ウレア ちょう度 （25℃ 60W） 322 滴 点 （℃） 250以上 離油度 （％ 100℃,24h） 2.0 酸化安定度 （kg/cm299℃,100h） 0.35 チムケン試験（OK値,kg） 18 トラクション係数 （1500rpm,925kg/mm2すべり率２％） 0.092 上記のグリースの性質は、接触面間の面圧が高くなる
と、その接触面間に存在する潤滑剤の膜の粘度が上昇
し、ガラス状の固体になる。即ち、高面圧下で硬着性を
示す性質がある。このため、せん断抵抗が増加してμが
高くなる。Thickener Urea consistency (25 ℃ 60W) 322 drop point (℃) 250 or more Oil separation (% 100 ℃, 24h) 2.0 Oxidation stability (kg / cm 2 99 ℃, 100h) 0.35 Timken test (OK value, kg) 18 Traction coefficient (1500 rpm, 925 kg / mm 2 Slip rate 2%) 0.092 The properties of the above grease are such that as the surface pressure between the contact surfaces increases, the viscosity of the lubricant film existing between the contact surfaces increases. And becomes a glassy solid. That is, there is a property of showing a hard adhesion under a high surface pressure. Therefore, the shear resistance increases and μ increases.
しかし、面圧が除かれると即時に元の液状に戻り、通
常の潤滑剤としての物性を取り戻す。However, when the surface pressure is removed, the liquid immediately returns to the original liquid state, and the physical properties as a normal lubricant are restored.
従って、上記の潤滑剤を用いると、係合素子５がくさ
び形の間隙４にかみ込まれた際に、潤滑剤10の上記の性
状に基づき、高いμが作用する。このため、負荷容量を
大きくとるべくストラット角αを大きくしても前述の
（１）式の条件を満足することができる。Therefore, when the above-mentioned lubricant is used, a high μ acts based on the above-mentioned properties of the lubricant 10 when the engagement element 5 is bitten into the wedge-shaped gap 4. Therefore, even if the strut angle α is increased in order to increase the load capacity, the condition of the above-mentioned expression (1) can be satisfied.
また、クラッチが作動しない状態、即ちフリー状態に
おいては、通常の潤滑剤が存在する場合と変わらない。Further, in a state where the clutch is not operated, that is, in a free state, the state is the same as the case where the normal lubricant is present.
第３図は、二方向クラッチの例であり、外輪３はハウ
ジングに固定され、内方部材１と保持器６にそれぞれ入
力軸と出力軸が連結される。また外輪３を回転できるよ
うに構成し、その外輪３に他の入力手段を掛合せしめる
タイプもある。また、第４図は係合素子５としてスプラ
グを使用した例である。FIG. 3 shows an example of a two-way clutch, in which an outer ring 3 is fixed to a housing, and an input shaft and an output shaft are connected to an inner member 1 and a retainer 6, respectively. There is also a type in which the outer ring 3 is configured to be rotatable and other input means is engaged with the outer ring 3. FIG. 4 shows an example in which a sprag is used as the engagement element 5.
この場合の間隙４′はくさび形ではなく、周方向に一
定の大きさの間隔を有し、係合素子５は一対のばね部材
８により、係合方向に付勢される。上記の間隙４′にも
前述の硬着性潤滑材10が充填される。In this case, the gap 4 ′ is not wedge-shaped but has a constant size in the circumferential direction, and the engagement element 5 is urged in the engagement direction by the pair of spring members 8. The gap 4 'is also filled with the above-described hard-adhesive lubricant 10.
以上のように、この発明によれば、内方部材と外輪の
間の間隙に係合素子を収納した構造のクラッチにおい
て、その基本的な構造を変えることなく、特定潤滑剤の
選定のみにより負荷容量を増大させることができる効果
がある。As described above, according to the present invention, in a clutch having a structure in which an engagement element is housed in a gap between an inner member and an outer ring, a load can be obtained only by selecting a specific lubricant without changing the basic structure. There is an effect that the capacity can be increased.
第１図は従来例の一方向クラッチの一部縦断正面図、第
２図から第４図は実施例のクラッチの一部縦断正面図で
ある。 １……内方部材、２……カム面、 ３……外輪、４……くさび形間隙、 ５……係合素子、６……保持器、 ７……ポケット、８……ばね部材、 ９……潤滑剤、10……硬着性潤滑剤。FIG. 1 is a partial longitudinal front view of a conventional one-way clutch, and FIGS. 2 to 4 are partial longitudinal front views of a clutch of an embodiment. DESCRIPTION OF SYMBOLS 1 ... Inner member, 2 ... Cam surface, 3 ... Outer ring, 4 ... Wedge gap, 5 ... Engaging element, 6 ... Cage, 7 ... Pocket, 8 ... Spring member, 9 …… Lubricant, 10 …… Hard adhesive lubricant.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−4036（ＪＰ，Ａ) 特開 昭63−303254（ＪＰ，Ａ) 特開 平１−172642（ＪＰ，Ａ) 特開 昭57−9331（ＪＰ，Ａ) 特開 昭63−312397（ＪＰ，Ａ) 特開 昭59−174699（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F16D 41/06 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-4036 (JP, A) JP-A-63-303254 (JP, A) JP-A-1-1722642 (JP, A) JP-A 57- 9331 (JP, A) JP-A-63-312397 (JP, A) JP-A-59-174699 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) F16D 41/06
Claims (1)
合素子を収納し、その係合素子を上記内方部材と外輪と
の間に係合する方向に付勢したクラッチにおいて、上記
の間隙に高面圧下で硬着性を示す潤滑剤を充填したこと
を特徴とするクラッチ。1. A clutch in which an engaging element is housed in a gap formed between an inner member and an outer ring, and the engaging element is biased in a direction to be engaged between the inner member and the outer ring. A clutch, characterized in that the gap is filled with a lubricant exhibiting a firm adhesion under a high surface pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2048679A JP2899041B2 (en) | 1990-02-28 | 1990-02-28 | clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2048679A JP2899041B2 (en) | 1990-02-28 | 1990-02-28 | clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03249435A JPH03249435A (en) | 1991-11-07 |
| JP2899041B2 true JP2899041B2 (en) | 1999-06-02 |
Family
ID=12810007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2048679A Expired - Lifetime JP2899041B2 (en) | 1990-02-28 | 1990-02-28 | clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899041B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280874A (en) * | 1998-03-27 | 1999-10-15 | Koyo Seiko Co Ltd | Pulley unit |
| JP2000234638A (en) * | 1999-02-17 | 2000-08-29 | Koyo Seiko Co Ltd | One-way clutch |
| JP4240169B2 (en) * | 1999-03-29 | 2009-03-18 | 株式会社ジェイテクト | One-way clutch and pulley with one-way clutch |
| JP4071927B2 (en) * | 2000-10-13 | 2008-04-02 | Ｎｔｎ株式会社 | Clutch unit |
| JP2003042268A (en) * | 2002-07-03 | 2003-02-13 | Koyo Seiko Co Ltd | Pulley unit |
| JP5081435B2 (en) * | 2006-11-22 | 2012-11-28 | 出光興産株式会社 | Grease for one-way clutch built-in type rotation transmission device |
| JP2007198607A (en) * | 2007-04-23 | 2007-08-09 | Jtekt Corp | One-way clutch |
| US11428278B2 (en) | 2018-05-07 | 2022-08-30 | Nsk Ltd. | Reverse input blocking clutch and actuator |
-
1990
- 1990-02-28 JP JP2048679A patent/JP2899041B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03249435A (en) | 1991-11-07 |
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