JP4236304B2 - Clutch built-in rotating parts - Google Patents

Clutch built-in rotating parts Download PDF

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Publication number
JP4236304B2
JP4236304B2 JP20516198A JP20516198A JP4236304B2 JP 4236304 B2 JP4236304 B2 JP 4236304B2 JP 20516198 A JP20516198 A JP 20516198A JP 20516198 A JP20516198 A JP 20516198A JP 4236304 B2 JP4236304 B2 JP 4236304B2
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Japan
Prior art keywords
grease
ball
pocket
cylindrical surfaces
clutch
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JP20516198A
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Japanese (ja)
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JP2000035060A (en
Inventor
裕明 鈴木
昌弘 栗田
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NTN Corp
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NTN Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00Freewheels or freewheel clutches
    • F16D41/06Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/069Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
    • F16D41/07Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、クラッチが内蔵された軸受やプーリユニット等のクラッチ内蔵形回転部品に関するものである。
【0002】
【従来の技術】
クラッチ内蔵形回転部品は、軸に固定されるインナー部材の外径面と、このインナー部材の外側に設けられたアウター部材の内径面との間に、軸受用の転動体と、クラッチ用の係合子を一体に組み込んだものである。転動体としてはボールや円筒ころ等が用いられ、係合子としてはスプラグやカム等が用いられている。このクラッチ内蔵形回転部品は、全自動洗濯機の洗濯脱水槽を回転させる筒状回転軸の軸受や、自動車のオルタネータの回転軸に取り付けられるプーリ等、クラッチ機能と軸受機能の両者を要求される部位に使用され、設計のコンパクト化に貢献している。
【0003】
このようなクラッチ内蔵形回転部品としては、特開平9−96325号公報に開示されたものがある。図5は、クラッチ内蔵形軸受の例であり、軸に取り付けられるインナー部材としての内輪34と、その外側に設けられたアウター部材としての外輪35との間に、保持器36に保持されたボール37とスプラグ38が組み込まれている。
【0004】
前記内輪34の外径面と外輪35の内径面には、それぞれ軸方向の概ね中央部に軌道溝39、40が設けられ、各軌道溝39、40の両側には円筒面41、42が形成されている。
【0005】
前記保持器36は、図6に示すように、円筒状の保持器本体43と、環状の蓋44より成り、保持器本体43の一方の端面に設けられた複数のピン45が、蓋44に設けられたピン孔46に嵌め込まれて、両者が一体化されている。
【0006】
前記保持器本体43には、前記蓋44側に開口する複数のグリース封入空間47が設けられ、各グリース封入空間47の閉塞部に、前記ボール37を収容するポケット48が設けられている。これらのポケット48の側面は、ボール37の表面に沿う球面状に形成されている。このグリース封入空間47にはグリースが封入され、ボール37と前記各軌道溝39、40との接触面が潤滑されるようになっている。また、各ポケット48に収容されたボール37は、蓋44に設けられたストッパ49で軸方向の移動を拘束されている。
【0007】
前記隣接するグリース封入空間47の間には、前記スプラグ38を収容するスプラグ収容部50が設けられている。各スプラグ38は、前記各軌道溝39、40両側の円筒面41、42に跨がる長さを有し、その外周の一部に両円筒面41、42と係合可能な2つの円弧面51、52が形成されている。
【0008】
各スプラグ38は、その背面側を弾性部材53でスプラグ収容部50の一方の壁面に押圧され、前記各円弧面51、52が内輪34と外輪35の各円筒面41、42に当接している。内輪34が図5の矢印の方向に回転すると、スプラグ38は内輪34側の円弧面51で右回りのモーメントを受けて起き上がり、各円弧面51、52が各円筒面41、42と係合して、外輪35に内輪34の回転が伝達される。内輪34が矢印と反対方向に回転する場合は、スプラグ38は左回りに倒れる方向のモーメントを受けて、各円筒面41、42と滑りながら接触するため、内輪34と外輪35の係合が遮断される。
【0009】
【発明が解決しようとする課題】
上述したクラッチ内蔵形部品は、前記各ボールを収納するポケットの側面が、ボールの表面に沿って球面状に形成されているので、ボールに付着したグリースがこのポケットの断面コーナー部で剥ぎ取られて、ボールとポケット側面の隙間へあまり流入しないため、インナー部材とアウター部材間を流動するグリースの量が少ない。したがって、ボールと軌道溝間の潤滑が不十分となり、軸受部の耐久寿命を十分に確保できない問題がある。
【0010】
そこで、この発明の課題は、ボールと軌道溝間に十分なグリースを供給でき、耐久寿命が長いクラッチ内蔵形部品を提供することである。
【0011】
【課題を解決するための手段】
上記の課題を解決するために、この発明は、軸に固定されるインナー部材の外径面と、このインナー部材の外側に設けられた筒状のアウター部材の内径面が、それぞれ軌道溝とその両側の円筒面で形成され、前記両軌道溝間に複数のボールが組み込まれ、前記両軌道溝に跨がって複数の係合子が前記両円筒面と係脱可能に配置され、前記インナー部材とアウター部材の間で前記ボールと係合子を保持する保持器が、円筒状の保持器本体と、この保持器本体の一側面に取り付けられた環状の蓋部材とで形成され、前記保持器本体に前記蓋部材側に開口する複数のグリース封入空間が設けられ、この各グリース封入空間の閉塞部に、前記ボールが個別に収容されるポケットが設けられ、隣接するグリース封入空間の間には前記係合子が収容される係合子収容部が設けられたクラッチ内蔵形回転部品において、前記ポケットの側面に前記ボールに外接する複数の部分円筒面を形成し、この隣接する部分円筒面の間に盗み部を設けた構成を採用したのである。すなわち、ボールが収容されるポケットの側面を複数の部分円筒面と盗み部で形成することにより、ボールに付着したグリースを剥ぎ取ることなくポケット側面との間に流入させるとともに、グリース封入空間も広くして、ボールと軌道溝間を十分に潤滑できるようにしたのである。
【0012】
また、軸に固定されるインナー部材の外径面と、このインナー部材の外側に設けられた筒状のアウター部材の内径面が、それぞれ軌道溝とその両側の円筒面で形成され、前記両軌道溝間に複数のボールが組み込まれ、前記両軌道溝に跨がって複数の係合子が前記両円筒面と係脱可能に配置され、前記インナー部材とアウター部材の間で前記ボールと係合子を保持する保持器が、円筒状の保持器本体と、この保持器本体の一側面に取り付けられた環状の蓋部材とで形成され、前記保持器本体に前記蓋部材側に開口し、周方向長さが異なる2種類のグリース封入空間が複数個設けられ、周方向長さが長いグリース封入空間の閉塞部に、前記ボールを収容する複数のポケットが設けられ、周方向長さが短いグリース封入空間の閉塞部に、前記ボールを収容する1つのポケットが設けられ、これらの隣接するグリース封入空間の間には前記係合子が収容される係合子収容部が設けられたクラッチ内蔵形回転部品においても、前記各ポケットの側面に前記ボールに外接する複数の部分円筒面を形成し、この隣接する部分円筒面の間に盗み部を設けた構成を採用したのである。
【0013】
さらに、前記部分円筒面の2つを、前記ポケットの入口両側に設け、これらの2つの部分円筒面で形成されるポケットの入口幅を、前記ボールの直径よりも狭く形成することにより、これらのポケット入口両側の部分円筒面でボールの軸方向の移動を拘束し、ボールの軸方向ストッパを不要とすることができるとともに、グリース封入空間をより広く活用することができる。
【0014】
【発明の実施の形態】
以下、図1乃至図4に基づき、この発明の実施形態を説明する。
【0015】
図1は、クラッチ内蔵形軸受の第1の実施形態を示す。図1(a)は縦断面図、(b)はその横断面図である。このクラッチ内蔵形軸受は、内輪1と外輪2の間に、保持器3に保持されたボール4とスプラグ5が組み込まれ、内輪1の外径面と外輪2の内径面に、それぞれ軌道溝6、7が設けられ、各軌道溝6、7の両側に円筒面8、9が形成されており、図5に示したクラッチ内蔵形軸受と同様に、ボール4と軌道溝6、7で軸受機能を、スプラグ5と円筒面8、9の係合でクラッチ機能を果たすようになっている。
【0016】
前記保持器3は、図2に示すように、樹脂製で円筒状の保持器本体10と、同じく樹脂製で環状の蓋11と、前記スプラグ5の正面を押圧するばね片12が切り起こしで形成された環状の補強板13とで構成されている。保持器本体10の両端面には複数のピン14、15が設けられ、これらのピン14、15が、それぞれ蓋11と補強板13に設けられたピン孔16、17に差し込まれ、その先端部が加熱変形されて、蓋11と補強板13が保持器本体10の両端面に一体に結合されるようになっている。
【0017】
前記保持器本体10には、前記蓋11側に開口する複数のグリース封入空間18が設けられ、各グリース封入空間18の閉塞部に、前記ボール4を収容するポケット19が設けられている。各ポケット19の対向する側面と底部側面には、それぞれ部分円筒面20が形成され、隣接する部分円筒面20の間には盗み部21が設けられている。また、隣接するグリース封入空間18の間には、前記スプラグ5を収容するスプラグ収容部22が設けられ、このスプラグ収容部22の底に設けられた孔から前記スプラグ5を押圧するばね片12が挿入されるようになっている。
【0018】
前記蓋11には、前記保持器本体10の各グリース封入空間18に挿入され、前記ポケット19に収容されたボール4の軸方向移動を拘束する複数のストッパ23が設けられている。このストッパ23には、グリース封入空間18をより有効に活用するために、その両側と前面側に切欠きが設けられている。
【0019】
前記各ボール4は、図3(a)に示すように、前記ポケット19の各部分円筒面20に内接し、ポケット19の入口側では前記ストッパ23に当接し、周方向と軸方向の移動を拘束されている。ボール4の周方向移動は、図3(b)に示すように、2つの部分円筒面20で拘束されているため、ボール4に付着したグリースは、ポケット19の断面コーナー部で剥ぎ取られることなくポケット19側面との間に流入し、前記内輪1と外輪2の各軌道溝6、7の間を循環流動して、ボール4と各軌道溝6、7の接触面を潤滑する。
【0020】
また、図3(c)に示すように、前記隣接する部分円筒面20の間には盗み部21が設けられているため、この盗み部21にもグリースが充填され、豊富なグリース量でボール4と各軌道溝6、7の潤滑状態を長時間良好に保つことができる。
【0021】
図4は、第2の実施形態を示す。このクラッチ内蔵形軸受は、保持器本体24に、周方向長さが異なる2種類のグリース封入空間25、26が複数個設けられ、周方向長さが長いグリース封入空間25にはボール27を収容するポケット28が2つずつ設けられ、周方向長さが短いグリース封入空間26にはポケット28が1つずつ設けられている。
【0022】
前記各ポケット28の入口両側の側面と底部側面には、それぞれ部分円筒面29が形成され、隣接する部分円筒面29の間には、盗み部30が設けられている。この実施形態では、入口両側の部分円筒面29で形成されたポケット28の入口幅がボール27の直径よりも狭くなっており、ボール27は周方向と軸方向の移動を部分円筒面29のみで拘束されるため、蓋31にはストッパが設けられていない。
【0023】
クラッチ機能部の構成は第1の実施形態と同様であり、スプラグ32がスプラグ収容部33にばね片で押圧されて収容されている。
【0024】
【発明の効果】
以上のように、この発明のクラッチ内蔵形回転部品は、ボールが収容される保持器本体のポケットの側面を複数の部分円筒面と盗み部で形成したので、ボールに付着したグリースを剥ぎ取ることなくポケット側面との間に流入させるとともに、グリース封入空間も広くして、ボールと軌道溝間を十分に潤滑することができ、優れた耐久寿命を得ることができる。また、前記部分円筒面の2つを、ポケットの入口両側に設け、これらの部分円筒面で形成されるポケットの入口幅をボールの直径よりも狭くしたので、ボールの軸方向移動に対するストッパを不要とすることができるとともに、グリース封入空間をより有効に活用することができる。
【図面の簡単な説明】
【図1】aは第1の実施形態のクラッチ内蔵形軸受を示す縦断面図、bはaの横断面図
【図2】図1の保持器の一部を示す分解斜視図
【図3】aは図1の一部切欠き展開平面図、bはaの要部拡大断面図、cはaの要部拡大平面図
【図4】第2の実施形態のクラッチ内蔵形軸受の一部を示す展開断面図
【図5】従来のクラッチ内蔵形軸受を示す横断面図
【図6】図5の一部切欠き展開平面図
【符号の説明】
1 内輪
2 外輪
3 保持器
4 ボール
5 スプラグ
6、7 軌道溝
8、9 円筒面
10 保持器本体
11 蓋
12 ばね片
13 補強板
14、15 ピン
16、17 ピン孔
18 グリース封入空間
19 ポケット
20 部分円筒面
21 盗み部
22 スプラグ収容部
23 ストッパ
24 保持器本体
25、26 グリース封入空間
27 ボール
28 ポケット
29 部分円筒面
30 盗み部
31 蓋
32 スプラグ
33 スプラグ収容部
34 内輪
35 外輪
36 保持器
37 ボール
38 スプラグ
39、40 軌道溝
41、42 円筒面
43 保持器本体
44 蓋
45 ピン
46 ピン孔
47 グリース封入空間
48 ポケット
49 ストッパ
50 スプラグ収容部
51、52 円弧面
53 弾性部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary part with a built-in clutch such as a bearing and a pulley unit with a built-in clutch.
[0002]
[Prior art]
The rotating part with a built-in clutch includes a rolling element for a bearing and a clutch engaging member between an outer diameter surface of an inner member fixed to a shaft and an inner diameter surface of an outer member provided outside the inner member. It is a combination of a goose. A ball, a cylindrical roller, or the like is used as the rolling element, and a sprag, a cam, or the like is used as the engaging element. This clutch built-in rotary component requires both a clutch function and a bearing function, such as a cylindrical rotary shaft bearing that rotates a washing and dewatering tank of a fully automatic washing machine, and a pulley that is attached to the rotary shaft of an automobile alternator. Used for parts, contributing to compact design.
[0003]
An example of such a clutch built-in rotary component is disclosed in Japanese Patent Laid-Open No. 9-96325. FIG. 5 is an example of a built-in clutch-type bearing, and a ball held by a cage 36 between an inner ring 34 as an inner member attached to a shaft and an outer ring 35 as an outer member provided on the outer side thereof. 37 and sprag 38 are incorporated.
[0004]
On the outer diameter surface of the inner ring 34 and the inner diameter surface of the outer ring 35, raceway grooves 39, 40 are provided in the substantially central portion in the axial direction, and cylindrical surfaces 41, 42 are formed on both sides of each raceway groove 39, 40. Has been.
[0005]
As shown in FIG. 6, the retainer 36 includes a cylindrical retainer body 43 and an annular lid 44, and a plurality of pins 45 provided on one end surface of the retainer body 43 are provided on the lid 44. The two are integrated into the pin hole 46 provided.
[0006]
The retainer body 43 is provided with a plurality of grease filled spaces 47 opened to the lid 44 side, and pockets 48 for accommodating the balls 37 are provided in the closed portions of the respective grease filled spaces 47. The side surfaces of these pockets 48 are formed in a spherical shape along the surface of the ball 37. Grease is sealed in the grease sealing space 47 so that the contact surface between the ball 37 and the raceway grooves 39 and 40 is lubricated. Further, the ball 37 accommodated in each pocket 48 is restrained from moving in the axial direction by a stopper 49 provided on the lid 44.
[0007]
Between the adjacent grease sealing spaces 47, a sprag accommodating portion 50 for accommodating the sprag 38 is provided. Each sprag 38 has a length straddling the cylindrical surfaces 41, 42 on both sides of each of the raceway grooves 39, 40, and two circular arc surfaces that can be engaged with both the cylindrical surfaces 41, 42 at a part of the outer periphery thereof. 51 and 52 are formed.
[0008]
The back surfaces of the sprags 38 are pressed against one wall surface of the sprag housing 50 by the elastic member 53, and the circular arc surfaces 51 and 52 are in contact with the cylindrical surfaces 41 and 42 of the inner ring 34 and the outer ring 35. . When the inner ring 34 rotates in the direction of the arrow in FIG. 5, the sprag 38 rises by receiving a clockwise moment on the arc surface 51 on the inner ring 34 side, and each arc surface 51, 52 engages with each cylindrical surface 41, 42. Thus, the rotation of the inner ring 34 is transmitted to the outer ring 35. When the inner ring 34 rotates in the direction opposite to the arrow, the sprag 38 receives a moment in a direction that tilts counterclockwise and contacts the respective cylindrical surfaces 41 and 42 while sliding, so that the engagement between the inner ring 34 and the outer ring 35 is cut off. Is done.
[0009]
[Problems to be solved by the invention]
In the clutch built-in type component described above, the side surface of the pocket for storing each ball is formed in a spherical shape along the surface of the ball, so that the grease adhering to the ball is peeled off at the corner of the cross section of the pocket. Therefore, the amount of grease flowing between the inner member and the outer member is small because it does not flow so much into the gap between the ball and the pocket side surface. Therefore, there is a problem that the lubrication between the ball and the raceway groove is insufficient and the durability of the bearing portion cannot be sufficiently secured.
[0010]
Accordingly, an object of the present invention is to provide a clutch built-in type component that can supply sufficient grease between the ball and the raceway groove and has a long durability life.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides an outer diameter surface of an inner member fixed to a shaft and an inner diameter surface of a cylindrical outer member provided on the outer side of the inner member. The inner member is formed of cylindrical surfaces on both sides, a plurality of balls are incorporated between the both raceway grooves, and a plurality of engagement elements are detachably disposed between the both raceway grooves. A retainer for holding the ball and the engagement member between the outer member and the outer member is formed by a cylindrical retainer body and an annular lid member attached to one side surface of the retainer body, and the retainer body A plurality of grease-enclosed spaces that are open to the lid member side, and pockets for individually accommodating the balls are provided in the closed portions of the respective grease-enclosed spaces, and between the adjacent grease-enclosed spaces, Engagement element is accommodated In the clutch built-in type rotary part provided with a combination housing part, a configuration is adopted in which a plurality of partial cylindrical surfaces that circumscribe the ball are formed on the side surface of the pocket, and a stealing part is provided between the adjacent partial cylindrical surfaces. It was. That is, the side surface of the pocket in which the ball is accommodated is formed by a plurality of partial cylindrical surfaces and a stealing portion, so that the grease adhering to the ball can flow into the pocket side surface without being peeled off, and the grease filling space is wide. Thus, the ball and the raceway can be sufficiently lubricated.
[0012]
Further, the outer diameter surface of the inner member fixed to the shaft and the inner diameter surface of the cylindrical outer member provided on the outer side of the inner member are respectively formed by a track groove and cylindrical surfaces on both sides thereof, and the both tracks A plurality of balls are incorporated between the grooves, and a plurality of engagement elements are arranged so as to be able to be engaged with and disengaged from both the cylindrical surfaces across the both raceway grooves, and the balls and the engagement elements are arranged between the inner member and the outer member. Is formed of a cylindrical retainer body and an annular lid member attached to one side surface of the retainer body. The retainer body is open to the lid member side, and the circumferential direction Two types of grease-filled spaces with different lengths are provided, and a plurality of pockets are provided in the closed portion of the grease-filled space with a long circumferential length to accommodate the balls, and grease is filled with a short circumferential length. In the closed part of the space, the ball Even in a clutch built-in rotary component in which one pocket for receiving is provided, and an engaging member receiving portion for receiving the engaging member is provided between these adjacent grease-filled spaces, A configuration is adopted in which a plurality of partial cylindrical surfaces circumscribing the ball are formed and a stealing portion is provided between the adjacent partial cylindrical surfaces.
[0013]
Furthermore, two of the partial cylindrical surfaces are provided on both sides of the entrance of the pocket, and the pocket entrance width formed by these two partial cylindrical surfaces is formed to be narrower than the diameter of the ball. The partial cylindrical surfaces on both sides of the pocket entrance can restrain the movement of the ball in the axial direction, eliminate the need for the axial stopper of the ball, and more widely utilize the grease filled space.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0015]
FIG. 1 shows a first embodiment of a clutch built-in type bearing. 1A is a longitudinal sectional view, and FIG. 1B is a transverse sectional view thereof. In this built-in clutch type bearing, a ball 4 and a sprag 5 held by a cage 3 are incorporated between an inner ring 1 and an outer ring 2, and raceway grooves 6 are respectively formed on an outer diameter surface of the inner ring 1 and an inner diameter surface of the outer ring 2. 7 and cylindrical surfaces 8 and 9 are formed on both sides of each of the raceway grooves 6 and 7, and the ball 4 and the raceway grooves 6 and 7 are used as a bearing function in the same manner as the clutch built-in type bearing shown in FIG. The sprag 5 and the cylindrical surfaces 8 and 9 are engaged to perform a clutch function.
[0016]
As shown in FIG. 2, the retainer 3 is made of a resin-made cylindrical retainer body 10, a resin-made annular lid 11, and a spring piece 12 that presses the front of the sprag 5. The annular reinforcing plate 13 is formed. A plurality of pins 14 and 15 are provided on both end faces of the cage body 10, and these pins 14 and 15 are inserted into pin holes 16 and 17 provided in the lid 11 and the reinforcing plate 13, respectively, and the tip portions thereof. Is deformed by heating, and the lid 11 and the reinforcing plate 13 are integrally coupled to both end faces of the cage body 10.
[0017]
The cage body 10 is provided with a plurality of grease-filled spaces 18 opened to the lid 11 side, and pockets 19 for accommodating the balls 4 are provided in the closed portions of the grease-filled spaces 18. A partial cylindrical surface 20 is formed on the opposite side surface and bottom side surface of each pocket 19, and a stealing portion 21 is provided between adjacent partial cylindrical surfaces 20. Further, a sprag accommodating portion 22 for accommodating the sprag 5 is provided between the adjacent grease filled spaces 18, and a spring piece 12 that presses the sprag 5 from a hole provided at the bottom of the sprag accommodating portion 22. It is supposed to be inserted.
[0018]
The lid 11 is provided with a plurality of stoppers 23 which are inserted into the respective grease-filled spaces 18 of the cage body 10 and restrain the axial movement of the balls 4 accommodated in the pockets 19. The stopper 23 is provided with notches on both sides and the front side in order to make more effective use of the grease filled space 18.
[0019]
As shown in FIG. 3A, each ball 4 is inscribed in each partial cylindrical surface 20 of the pocket 19 and abuts against the stopper 23 on the entrance side of the pocket 19 to move in the circumferential direction and the axial direction. It is restrained. Since the circumferential movement of the ball 4 is restrained by the two partial cylindrical surfaces 20 as shown in FIG. 3B, the grease adhering to the ball 4 is peeled off at the corner of the cross section of the pocket 19. Instead, it flows between the side surfaces of the pocket 19 and circulates between the raceway grooves 6 and 7 of the inner ring 1 and the outer ring 2 to lubricate the contact surfaces of the balls 4 and the raceway grooves 6 and 7.
[0020]
Further, as shown in FIG. 3C, since the stealing portion 21 is provided between the adjacent partial cylindrical surfaces 20, the stealing portion 21 is filled with grease, and the ball is filled with an abundant amount of grease. 4 and each of the raceway grooves 6 and 7 can be kept in good condition for a long time.
[0021]
FIG. 4 shows a second embodiment. In the built-in clutch type bearing, the cage body 24 is provided with a plurality of two types of grease-filled spaces 25 and 26 having different circumferential lengths, and the balls 27 are accommodated in the grease-filled spaces 25 having a long circumferential length. Two pockets 28 are provided, and one pocket 28 is provided in the grease-filled space 26 having a short circumferential length.
[0022]
A partial cylindrical surface 29 is formed on each side surface and bottom side surface of each pocket 28, and a stealing portion 30 is provided between adjacent partial cylindrical surfaces 29. In this embodiment, the entrance width of the pocket 28 formed by the partial cylindrical surfaces 29 on both sides of the entrance is narrower than the diameter of the ball 27, and the ball 27 moves in the circumferential direction and the axial direction only by the partial cylindrical surface 29. Since it is restrained, the lid 31 is not provided with a stopper.
[0023]
The configuration of the clutch function unit is the same as that of the first embodiment, and the sprag 32 is accommodated in the sprag accommodating portion 33 by being pressed by a spring piece.
[0024]
【The invention's effect】
As described above, the clutch built-in type rotating component according to the present invention forms the side surface of the pocket of the cage main body in which the ball is accommodated by the plurality of partial cylindrical surfaces and the stealing portion, so that the grease attached to the ball is peeled off. In addition, the grease can be allowed to flow between the pocket side surface and the grease filling space can be widened to sufficiently lubricate the space between the ball and the raceway groove, and an excellent durability life can be obtained. In addition, two of the partial cylindrical surfaces are provided on both sides of the pocket entrance, and the pocket entrance width formed by these partial cylindrical surfaces is narrower than the diameter of the ball, eliminating the need for a stopper against the axial movement of the ball. In addition, the grease-filled space can be used more effectively.
[Brief description of the drawings]
1 is a longitudinal sectional view showing a clutch built-in type bearing according to the first embodiment; FIG. 1 is a transverse sectional view of a; FIG. 2 is an exploded perspective view showing a part of the cage of FIG. a is a partially cutaway plan view of FIG. 1, b is an enlarged cross-sectional view of the main part of a, and c is an enlarged plan view of the main part of a. FIG. 4 shows a part of the clutch built-in type bearing of the second embodiment. Fig. 5 is a cross-sectional view showing a conventional clutch built-in type bearing. Fig. 6 is a partially cut-out plan view of Fig. 5.
DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 3 Cage 4 Ball 5 Sprags 6, 7 Track groove 8, 9 Cylindrical surface 10 Cage body 11 Lid 12 Spring piece 13 Reinforcement plate 14, 15 Pin 16, 17 Pin hole 18 Grease filled space 19 Pocket 20 part Cylindrical surface 21 Stealing portion 22 Sprag accommodating portion 23 Stopper 24 Retainer body 25, 26 Grease filled space 27 Ball 28 Pocket 29 Partial cylindrical surface 30 Stealing portion 31 Cover 32 Sprag 33 Sprag accommodating portion 34 Inner ring 35 Outer ring 36 Retainer 37 Ball 38 Sprags 39, 40 Track grooves 41, 42 Cylindrical surface 43 Cage main body 44 Lid 45 Pin 46 Pin hole 47 Grease filled space 48 Pocket 49 Stopper 50 Sprag receiving portion 51, 52 Arc surface 53 Elastic member

Claims (1)

軸に固定されるインナー部材の外径面と、このインナー部材の外側に設けられた筒状のアウター部材の内径面が、それぞれ軌道溝とその両側の円筒面で形成され、前記両軌道溝間に複数のボールが組み込まれ、前記両軌道溝に跨がって複数の係合子がばね片で押圧されて前記両円筒面と係脱可能に配置され、前記インナー部材とアウター部材の間で前記ボールと係合子を保持する樹脂製の保持器が、円筒状の保持器本体と、この保持器本体の一側面に取り付けられた環状の蓋部材とで形成され、前記保持器本体に前記蓋部材側に開口する複数のグリース封入空間が設けられ、この各グリース封入空間の閉塞部に、前記ボールが個別に収容されるポケットが設けられ、隣接するグリース封入空間の間には前記係合子が収容される係合子収容部が設けられたクラッチ内蔵形回転部品において、前記各ポケットの円周方向で対向する両側の側面と、軸方向で前記蓋部材と対向する側面とに、前記ボールに外接するように保持器半径方向に延びる複数の部分円筒面が形成され、この隣接する部分円筒面の間に盗み部が設けられ、前記蓋部材に、前記ポケットに収容されたボールの軸方向移動を拘束し、その両側面が前記ポケットの円周方向で対向する両側の側面に当接されるストッパが設けられ、このストッパの両側と前面側に切欠きが設けられたことを特徴とするクラッチ内蔵形回転部品。An outer diameter surface of the inner member fixed to the shaft and an inner diameter surface of the cylindrical outer member provided on the outer side of the inner member are each formed by a track groove and cylindrical surfaces on both sides thereof, A plurality of balls are incorporated into the two raceways, and a plurality of engaging elements are pressed by spring pieces so as to be able to be engaged with and disengaged from both the cylindrical surfaces across the both raceway grooves, and between the inner member and the outer member, A resin cage that holds the ball and the engagement element is formed of a cylindrical cage body and an annular lid member attached to one side surface of the cage body, and the lid body has the lid member A plurality of grease-enclosed spaces that open to the side are provided, and pockets for individually accommodating the balls are provided in the closed portions of the respective grease-enclosed spaces, and the engaging elements are accommodated between adjacent grease-enclosed spaces. The engaging member receiving portion is In vignetting clutch built-in type rotary component, and on both sides of the opposite sides in the circumferential direction of each pocket and on the side facing the lid member in the axial direction, the cage radial direction so as to circumscribe the balls A plurality of extending partial cylindrical surfaces are formed, and a stealing portion is provided between the adjacent partial cylindrical surfaces. The lid member restrains the axial movement of the ball accommodated in the pocket, and both side surfaces thereof are A rotating part with a built-in clutch, characterized in that there are provided stoppers that are in contact with both side surfaces facing each other in the circumferential direction of the pocket, and notches are provided on both sides and the front side of the stopper .
JP20516198A 1998-07-21 1998-07-21 Clutch built-in rotating parts Expired - Lifetime JP4236304B2 (en)

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Application Number Priority Date Filing Date Title
JP20516198A JP4236304B2 (en) 1998-07-21 1998-07-21 Clutch built-in rotating parts

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JP4236304B2 true JP4236304B2 (en) 2009-03-11

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Publication number Priority date Publication date Assignee Title
JP2013104492A (en) * 2011-11-14 2013-05-30 Schaeffler Technologies Gmbh & Co Kg Retainer used for free wheel belt pulley, including projections for lubricant distribution
CN114483794B (en) * 2022-01-25 2024-04-19 中国铁建重工集团股份有限公司 Combined retainer for main bearing of heading machine and assembling method thereof

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