JP2009287602A - Clutch release bearing - Google Patents

Clutch release bearing Download PDF

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JP2009287602A
JP2009287602A JP2008137942A JP2008137942A JP2009287602A JP 2009287602 A JP2009287602 A JP 2009287602A JP 2008137942 A JP2008137942 A JP 2008137942A JP 2008137942 A JP2008137942 A JP 2008137942A JP 2009287602 A JP2009287602 A JP 2009287602A
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Prior art keywords
outer ring
bearing
shielding member
clutch release
release bearing
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JP2008137942A
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Japanese (ja)
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Arihiro Fujiwara
有宏 藤原
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JTEKT Corp
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JTEKT Corp
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Priority to JP2008137942A priority Critical patent/JP2009287602A/en
Publication of JP2009287602A publication Critical patent/JP2009287602A/en
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    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7889—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to an inner race and extending toward the outer race
    • 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
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/43—Clutches, e.g. disengaging bearing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/08—Details or arrangements of sealings not provided for in group F16D3/84

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch release bearing having a sealing structure hardly allowing water to enter inside the bearing without installing a part outside the front side of the bearing, or increasing torque. <P>SOLUTION: The clutch release bearing 10 includes an outer ring 20, an inner ring 30, a plurality of rolling elements 14 arranged between the outer ring 20 and the inner ring 30 rotatably, and a retainer 16 for retaining the rolling elements 14 rotatably. An outer ring collar portion 22 extending inwardly in the radial direction is formed at one side end of the outer ring 20. One side end portion 38 of the inner ring 30 is formed at a predetermined interval from the outer ring collar portion 22 inward bearing inward at the same side as one side in which the outer ring collar portion 22 is formed. A shielding member 40 is arranged to be fixed to the inside diameter surface of the outer ring 20 in the bearing inwardly of the outer ring collar portion 22, and extended inwardly in the radial direction. The shielding member 40 is not in contact with the inner ring 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明はクラッチレリーズ軸受に関する。具体的には、クラッチ機構の回転部材と接触して外輪が回転するタイプのクラッチレリーズ軸受の密封構造に関する。   The present invention relates to a clutch release bearing. Specifically, the present invention relates to a sealing structure for a clutch release bearing of the type in which an outer ring rotates in contact with a rotating member of a clutch mechanism.

自動車のエンジンとトランスミッションとの間に配設されるクラッチ装置にはクラッチレリーズ軸受が組み込まれている。このクラッチレリーズ軸受の内部に泥水等の異物が入ってしまうと、軸受内部に封入されたグリース等の潤滑油が劣化し、軸受内部に錆が発生して、軸受の寿命低下を引き起こす。
そこで、従来のクラッチレリーズ軸受には、軸受外部から軸受内部への泥水等の異物の侵入を防ぎ、軸受内部に封入されているグリース等の潤滑油の軸受外部への流出を防ぐために、内輪又は外輪のいずれか一方に固定され他方に摺接する接触タイプのシールを内輪と外輪の間に配置した構成の密封構造を採用しているものがある。 A clutch release bearing is incorporated in a clutch device disposed between an automobile engine and a transmission. If foreign matter such as muddy water enters the inside of the clutch release bearing, the lubricating oil such as grease sealed in the bearing is deteriorated, and rust is generated inside the bearing, thereby reducing the life of the bearing.
Therefore, in the conventional clutch release bearing, in order to prevent foreign matter such as muddy water from entering the bearing from the outside of the bearing and to prevent the lubricating oil such as grease sealed inside the bearing from flowing out of the bearing, Some have adopted a sealing structure in which a contact type seal fixed to one of the outer rings and in sliding contact with the other is disposed between the inner ring and the outer ring.

先行技術文献として、特開２００１−３１１４３７号公報（特許文献１）には、外輪回転タイプのクラッチレリーズ軸受について、内輪に固定されたシール部材が外輪に摺接する構成の密封構造が記載されている。また、特開２００６−９８２６号公報（特許文献２）には、外輪回転タイプのクラッチレリーズ軸受について、外輪に固定されたシール部材が内輪に摺接する構成の密封構造が記載されている。   As a prior art document, Japanese Patent Application Laid-Open No. 2001-311437 (Patent Document 1) describes a sealing structure in which a seal member fixed to an inner ring is in sliding contact with an outer ring of a clutch release bearing of an outer ring rotation type. . Japanese Patent Laying-Open No. 2006-9826 (Patent Document 2) describes a sealing structure in which a seal member fixed to an outer ring is in sliding contact with an inner ring of an outer ring rotation type clutch release bearing.

図４に、特許文献１に記載されたクラッチレリーズ軸受とほぼ同一の構成のクラッチレリーズ軸受１１０の部分断面図を示す。図４に示すように、クラッチレリーズ軸受１１０は、外輪１２０の一端部に径方向内方に延びる鍔部１２２が形成され、ダイヤフラムスプリング（クラッチ機構の回転部材）１１２と外輪１２０の鍔部１２２の接触により外輪１２０が回転するタイプのクラッチレリーズ軸受である。
そして、外輪１２０との間に複数の玉（転動体）１１４が転動可能に配置される内輪１３０の内周には自動調心用の弾性スリーブ１４０が固着されており、内輪１３０の一端部において弾性スリーブ１４０からシール部材１４２が突設形成されている。そして、シール部材１４２の先端を外輪１２０の鍔部１２２の軸受内方の側面に摺接させて外輪１２０と内輪１３０の間の隙間を塞ぐ構造となっている。また、軸方向の他端では、内輪１３０にスリンガ１５０を外嵌め固定し、外輪１２０に外嵌め固定されたオイルシール１５２の先端を軸受外方からスリンガ１５０に摺接させて、外輪１２０と内輪１３０の間の隙間を塞ぐ構造となっている。よって、クラッチレリーズ軸受１１０は、潤滑油が漏れにくく泥水が侵入しにくい構造であるため、良好な潤滑性と耐水性を維持できると考えられる。
特開２００１−３１１４３７号公報 特開２００６−９８２６号公報 FIG. 4 is a partial cross-sectional view of a clutch release bearing 110 having substantially the same configuration as the clutch release bearing described in Patent Document 1. As shown in FIG. 4, the clutch release bearing 110 has a flange 122 extending radially inward at one end of the outer ring 120, and a diaphragm spring (rotating member of the clutch mechanism) 112 and a flange 122 of the outer ring 120. This is a clutch release bearing in which the outer ring 120 is rotated by contact.
An elastic sleeve 140 for self-alignment is fixed to the inner periphery of the inner ring 130 in which a plurality of balls (rolling elements) 114 are rotatably arranged between the outer ring 120 and one end of the inner ring 130. A sealing member 142 is formed so as to protrude from the elastic sleeve 140. The tip of the seal member 142 is in sliding contact with the inner side surface of the bearing of the flange 122 of the outer ring 120 to close the gap between the outer ring 120 and the inner ring 130. At the other end in the axial direction, the slinger 150 is externally fitted and fixed to the inner ring 130, and the tip of the oil seal 152 that is externally fitted and fixed to the outer ring 120 is brought into sliding contact with the slinger 150 from the outside of the bearing. The gap between 130 is closed. Therefore, since the clutch release bearing 110 has a structure in which lubricating oil does not easily leak and muddy water does not easily enter, it is considered that good lubricity and water resistance can be maintained.
JP 2001-311437 A JP 2006-9826 A

しかしながら、クラッチレリーズ軸受は低トルク化の要請がある。そして、図４に示したクラッチレリーズ軸受１１０では、シール部材１４２が外輪１２０の鍔部１２２に接触する構造であるため、外輪１２０の回転による鍔部１２２とシール部材１４２との接触摩擦によりトルクが増大するという問題がある。
そして、低トルク化のために、シール部材１４２を外輪１２０の鍔部１２２に対して軽接触または非接触とすると、雨の日のような、クラッチレリーズ軸受１１０に大量の水がかかる環境では、シール部材１４２と外輪１２０の鍔部１２２の間を通って、水が軸受の内部に侵入することを、抑止することが困難となる。
なお、クラッチ機構の回転部材が配設されるクラッチレリーズ軸受のフロント側では、クラッチ機構の回転部材が外輪に接触する構造のため、クラッチレリーズ軸受の軸受外部に軸受を密封構造とするための部品を設置するスペースを確保することが困難であることに留意しなければならない。 However, there is a demand for lower torque in the clutch release bearing. In the clutch release bearing 110 shown in FIG. 4, since the seal member 142 is in contact with the flange 122 of the outer ring 120, torque is generated by contact friction between the flange 122 and the seal member 142 due to the rotation of the outer ring 120. There is a problem of increasing.
When the seal member 142 is lightly contacted or non-contacted with the flange 122 of the outer ring 120 to reduce torque, in an environment where a large amount of water is applied to the clutch release bearing 110 such as a rainy day, It becomes difficult to prevent water from entering the inside of the bearing through the seal member 142 and the flange 122 of the outer ring 120.
In addition, on the front side of the clutch release bearing where the rotating member of the clutch mechanism is disposed, the rotating member of the clutch mechanism is in contact with the outer ring, so that the bearing is a sealing structure outside the bearing of the clutch release bearing. It should be noted that it is difficult to secure a space for installing the.

そこで、本発明が解決しようとする課題は、軸受のフロント側の外側に部品を設置することなく、トルクが増大することなく、かつ、水が軸受内部に侵入しにくいシール構造としたクラッチレリーズ軸受を提供することにある。   Therefore, the problem to be solved by the present invention is a clutch release bearing having a seal structure in which water does not enter the inside of the bearing without increasing the torque without installing any parts outside the front side of the bearing. Is to provide.

そこで、上記課題を解決するため、本発明に係るクラッチレリーズ軸受は次の手段をとる。
まず、本発明の第１の発明は、外輪と、内輪と、外輪と内輪の間に転動可能に配置された複数の転動体と、転動体を回動自在に保持する保持器を備え、
前記外輪の一側端部には径方向内方に延びる外輪鍔部が形成されると共に、該外輪鍔部の軸受外部の側面はクラッチ機構の回転部材が接触する接触面とされ、該外輪鍔部が形成された一側と同じ側に該外輪鍔部から軸受内方に所定の間隔をおいて前記内輪の一側端部が形成された、クラッチレリーズ軸受であって、
前記外輪鍔部の軸受内方には外輪の内径面に固定され径方向内方へ延設された遮蔽部材が配設されており、該遮蔽部材は前記内輪と非接触とされていることを特徴とする。
この第１の発明によれば、遮蔽部材は外輪鍔部の軸受内側に配設されている。そして、軸受のフロント側外輪の内径面に固定された遮蔽部材は内輪と非接触であるため、トルクが増大することはない。
また、遮蔽部材が外輪鍔部の軸受内方で外輪の内径面に固定されているので、外輪鍔部と内輪の一側端部の間から泥水等の異物が軸受の内部に侵入した場合でも、異物は外輪および遮蔽部材の回転による遠心力により軸受内部の径方向外方へ導かれ、外輪の内径側の外輪鍔部と遮蔽部材の間で行き止まりとなる。よって、泥水等の異物が遮蔽部材の軸方向内方まで侵入することがないので、遮蔽部材の軸方向内方に封入されているグリース等の潤滑油と泥水の混合によるグリースの劣化、錆びの発生等による軸受の寿命の低下が抑止される。
よって、軸受のフロント側の外側に部品を設置することなく、トルクが増大することなく、かつ、水が軸受内部に侵入しにくいシール構造としたクラッチレリーズ軸受を提供することができる。 In order to solve the above problems, the clutch release bearing according to the present invention takes the following means.
First, the first invention of the present invention comprises an outer ring, an inner ring, a plurality of rolling elements arranged so as to be able to roll between the outer ring and the inner ring, and a cage for rotatably holding the rolling element,
An outer ring flange portion extending radially inward is formed at one end of the outer ring, and a side surface outside the bearing of the outer ring flange portion is a contact surface with which a rotating member of the clutch mechanism comes into contact. A clutch release bearing in which one end of the inner ring is formed at a predetermined interval from the outer ring flange to the inside of the bearing on the same side as the one side on which the part is formed,
A shielding member fixed to the inner diameter surface of the outer ring and extending radially inward is disposed inside the bearing of the outer ring collar portion, and the shielding member is not in contact with the inner ring. Features.
According to the first aspect, the shielding member is disposed inside the bearing of the outer ring collar portion. And since the shielding member fixed to the inner diameter surface of the front side outer ring of the bearing is not in contact with the inner ring, the torque does not increase.
In addition, since the shielding member is fixed to the inner surface of the outer ring inside the bearing of the outer ring flange part, even when foreign matter such as muddy water enters the inside of the bearing from between the outer ring flange part and one end of the inner ring. The foreign matter is guided radially outward in the bearing by the centrifugal force generated by the rotation of the outer ring and the shielding member, and becomes a dead end between the outer ring collar portion on the inner diameter side of the outer ring and the shielding member. Therefore, foreign matter such as muddy water does not penetrate inward in the axial direction of the shielding member. Therefore, grease deterioration or rusting due to mixing of lubricating oil such as grease and mud water sealed in the axial direction of the shielding member is prevented. Reduction of bearing life due to occurrence or the like is suppressed.
Therefore, it is possible to provide a clutch release bearing having a seal structure in which no components are installed on the outer side of the bearing, torque is not increased, and water does not easily enter the bearing.

次に、本発明の第２の発明は、前記第１の発明に係るクラッチレリーズ軸受であって、前記外輪鍔部と前記内輪の一側端部の間には、該内輪の一側端部に固定され、該外輪鍔部とは非接触の近接状態とされたシール部材が配設されており、前記シール部材は前記遮蔽部材と非接触とされていることを特徴とする。
この第２の発明によれば、シール部材は外輪鍔部と内輪の一側端部の間に配設されており、軸受の外部には部品を配置していない。そして、内輪の一側端部に固定されたシール部材が外輪鍔部と非接触の近接状態でラビリンスを形成するので、外輪鍔部とシール部材の隙間からの泥水等の異物の軸受内部への侵入が抑止される。また、泥水等の異物が外輪鍔部とシール部材の隙間から軸受内部に侵入した場合でも、異物は外輪および遮蔽部材の回転による遠心力により軸受内部の径方向外方へ導かれ、外輪の内径側の外輪鍔部と遮蔽部材の間で行き止まりとなるため、グリース等の潤滑油が封入された部位への異物の侵入が抑止される。なお、シール部材は外輪鍔部及び遮蔽部材と非接触であるため、トルクが増大することはない。 Next, a second invention of the present invention is a clutch release bearing according to the first invention, wherein one end portion of the inner ring is provided between the outer ring flange portion and one end portion of the inner ring. A seal member fixed to the outer ring and in a non-contact proximity state with the outer ring collar portion is disposed, and the seal member is not in contact with the shielding member.
According to the second aspect of the invention, the seal member is disposed between the outer ring collar portion and the one end portion of the inner ring, and no components are disposed outside the bearing. And since the seal member fixed to one end of the inner ring forms a labyrinth in the non-contact proximity state with the outer ring collar part, foreign matter such as muddy water from the gap between the outer ring collar part and the seal member enters the bearing inside. Intrusion is deterred. Even when foreign matter such as muddy water enters the bearing through the gap between the outer ring collar and the seal member, the foreign matter is guided radially outward in the bearing by the centrifugal force due to the rotation of the outer ring and the shielding member, and the inner diameter of the outer ring Since a dead end is formed between the outer ring collar portion on the side and the shielding member, entry of foreign matter into a portion where lubricating oil such as grease is enclosed is suppressed. Since the seal member is not in contact with the outer ring collar portion and the shielding member, the torque does not increase.

次に、本発明の第３の発明は、前記第２の発明に係るクラッチレリーズ軸受であって、前記遮蔽部材の径方向内方の先端は軸線方向で所定の幅を有し、該遮蔽部材の径方向内方の先端が前記シール部材と非接触の近接状態とされていることを特徴とする。
この第３の発明によれば、遮蔽部材の径方向内方の先端とシール部材により、遠心力が働く方向と垂直な軸線方向のラビリンスが形成されており、遮蔽部材の回転によって異物が軸受内部に導かれる構造ではない。よって、外輪鍔部とシール部材の隙間から泥水等の異物が軸受内部へ侵入し、異物が遮蔽部材の先端とシール部材の隙間に達した場合でも、遮蔽部材の先端とシール部材によって形成されるラビリンスにより、異物の軸受内方への侵入が抑止される。 Next, a third invention of the present invention is the clutch release bearing according to the second invention, wherein the radially inner tip of the shielding member has a predetermined width in the axial direction, and the shielding member The tip in the radial direction is in a non-contact proximity state with the seal member.
According to the third aspect of the present invention, the labyrinth in the axial direction perpendicular to the direction in which the centrifugal force acts is formed by the radially inner tip of the shielding member and the sealing member. It is not a structure led to. Therefore, even when foreign matter such as muddy water enters the inside of the bearing from the gap between the outer ring collar and the seal member and the foreign matter reaches the gap between the tip of the shield member and the seal member, it is formed by the tip of the shield member and the seal member. Labyrinth prevents foreign material from entering the bearing.

次に、本発明の第４の発明は、前記第２の発明または第３の発明に係るクラッチレリーズ軸受であって、
前記シール部材には前記外輪鍔部と前記遮蔽部材の間隙に延設され、該外輪鍔部とは非接触とされ、該遮蔽部材とは非接触の近接状態とされたシールリップが形成されていることを特徴とする。
この第４の発明によれば、シールリップが遮蔽部材とシール部材の径方向の隙間を軸受外方から覆う。そのため、外輪鍔部とシール部材の隙間から泥水等の異物が軸受内部に侵入した場合でも、シールリップにより、遮蔽部材とシール部材の径方向の隙間から軸受内部への異物の侵入が抑止される。
また、異物がシールリップの先端に達した場合でも、シールリップの先端よりも径方向外方では、外輪の内径面に固定された遮蔽部材により異物の軸受内方への侵入が抑止され、シールリップの先端よりも径方向内方では、シールリップと遮蔽部材によって形成されるラビリンスにより異物の軸受内方への侵入が抑止される。 Next, a fourth invention of the present invention is a clutch release bearing according to the second invention or the third invention,
The seal member is provided with a seal lip that extends in a gap between the outer ring collar and the shielding member, is not in contact with the outer ring collar, and is not in contact with the shielding member. It is characterized by being.
According to the fourth invention, the seal lip covers the radial gap between the shielding member and the seal member from the outside of the bearing. Therefore, even when foreign matter such as muddy water enters the bearing from the gap between the outer ring collar and the seal member, the seal lip prevents entry of foreign matter from the radial gap between the shielding member and the seal member into the bearing. .
Even when foreign matter reaches the tip of the seal lip, the shielding member fixed to the inner diameter surface of the outer ring prevents foreign matter from entering the inside of the bearing outside the tip of the seal lip. Inward in the radial direction from the tip of the lip, entry of foreign matter into the bearing is suppressed by a labyrinth formed by the seal lip and the shielding member.

上述の本発明の各発明によれば、次の効果が得られる。
まず、上述の第１の発明によれば、遮蔽部材は外輪鍔部の軸受内側に配設されている。また、外輪の内径面に固定された遮蔽部材は内輪と非接触であるため、トルクが増大することはない。また、外輪鍔部と内輪の一側端部の間から泥水等の異物が軸受内部に侵入した場合でも、外輪の内径側の外輪鍔部と遮蔽部材の間で行き止まりとなり、異物が遮蔽部材の軸方向内方まで侵入することがない。よって、グリース等の潤滑油と泥水の混合によるグリースの劣化、錆びの発生等による軸受の寿命が低下が抑止される。よって、軸受のフロント側の外側に部品を設置することなく、トルクが増大することなく、かつ、水が軸受内部に侵入しにくいシール構造としたクラッチレリーズ軸受を提供することができる。
次に、上述の第２の発明によれば、シール部材は外輪鍔部と内輪の一側端部の間に配設されており、軸受の外部には部品を配置していない。そして、外輪鍔部とシール部材がラビリンスを形成し、泥水等の異物の軸受内部への侵入が抑止される。また、泥水等の異物が外輪鍔部とシール部材の隙間から軸受内部に侵入した場合でも、異物は外輪および遮蔽部材の回転による遠心力により軸受内部の径方向外方へ導かれ、外輪の内径側の外輪鍔部と遮蔽部材の間で行き止まりとなるため、グリース等の潤滑油が封入された部位への異物の侵入が抑止される。また、シール部材は外輪鍔部と非接触であるため、トルクが増大することはない。
次に、上述の第３の発明によれば、外輪鍔部とシール部材の隙間からの泥水等の異物が軸受内部へ侵入し、異物が遮蔽部材の先端とシール部材の隙間に達した場合でも、遮蔽部材の先端とシール部材によって形成されるラビリンスにより、異物の軸受内方への侵入が抑止される。
次に、上述の第４の発明によれば、外輪鍔部とシール部材の隙間から泥水等の異物が軸受内部に侵入した場合でも、シールリップが遮蔽部材とシール部材の径方向の隙間を軸受外方から覆うので、遮蔽部材とシール部材の径方向の隙間から軸受内部への異物の侵入が抑止される。また、異物がシールリップの先端に達した場合でも、シールリップの先端よりも径方向外方では、外輪の内径面に固定された遮蔽部材により異物の軸受内方への侵入が抑止され、シールリップの先端よりも径方向内方では、シールリップと遮蔽部材によって形成されるラビリンスにより異物の軸受内方への侵入が抑止される。 According to each invention of the present invention described above, the following effects can be obtained.
First, according to the first invention described above, the shielding member is disposed inside the bearing of the outer ring collar portion. Moreover, since the shielding member fixed to the inner surface of the outer ring is not in contact with the inner ring, the torque does not increase. In addition, even if foreign matter such as muddy water enters the inside of the bearing from between one end of the outer ring collar and the inner ring, a dead end is formed between the outer ring collar on the inner diameter side of the outer ring and the shielding member, and the foreign matter There is no penetration inward in the axial direction. Therefore, the deterioration of the grease due to the mixing of lubricating oil such as grease and muddy water, and the decrease in the life of the bearing due to the occurrence of rust are suppressed. Therefore, it is possible to provide a clutch release bearing having a seal structure in which no components are installed on the outer side of the bearing, torque is not increased, and water does not easily enter the bearing.
Next, according to the above-mentioned second invention, the seal member is disposed between the outer ring collar portion and one side end portion of the inner ring, and no components are disposed outside the bearing. And an outer ring collar part and a sealing member form a labyrinth, and the penetration | invasion to the inside of a bearing of foreign materials, such as muddy water, is suppressed. Even when foreign matter such as muddy water enters the bearing through the gap between the outer ring collar and the seal member, the foreign matter is guided radially outward in the bearing by the centrifugal force due to the rotation of the outer ring and the shielding member, and the inner diameter of the outer ring Since a dead end is formed between the outer ring collar portion on the side and the shielding member, entry of foreign matter into a portion where lubricating oil such as grease is enclosed is suppressed. Further, since the seal member is not in contact with the outer ring collar portion, the torque does not increase.
Next, according to the third invention described above, even when foreign matter such as muddy water from the gap between the outer ring flange and the seal member enters the bearing, and the foreign matter reaches the gap between the tip of the shielding member and the seal member. The labyrinth formed by the tip of the shielding member and the seal member prevents foreign matter from entering the bearing.
Next, according to the fourth invention described above, even when a foreign matter such as muddy water enters the bearing from the gap between the outer ring collar and the seal member, the seal lip causes the radial gap between the shielding member and the seal member to Since it covers from the outside, entry of foreign matter into the bearing from the radial gap between the shielding member and the seal member is suppressed. Even when foreign matter reaches the tip of the seal lip, the shielding member fixed to the inner diameter surface of the outer ring prevents foreign matter from entering the inside of the bearing outside the tip of the seal lip. Inward in the radial direction from the tip of the lip, entry of foreign matter into the bearing is suppressed by a labyrinth formed by the seal lip and the shielding member.

以下、本発明を実施するための最良の形態について実施例にしたがって説明する。   Hereinafter, the best mode for carrying out the present invention will be described according to examples.

図１に本発明の実施例１におけるクラッチレリーズ軸受１０の部分断面図を示す。クラッチレリーズ軸受１０は外輪２０と、内輪３０と、外輪２０と内輪３０の間に転動可能に配置された複数の玉（転動体）１４と、保持器１６とを備えた外輪回転タイプのクラッチレリーズ軸受である。
そして、外輪２０の一端部には径方向内方に延びる外輪鍔部２２が形成されると共に、外輪鍔部２２の軸受外方の側面はダイヤフラムスプリング１２が接触する接触面２４とされている。ダイヤフラムスプリング１２が本発明のクラッチ機構の回転部材である。そして、外輪鍔部２２が形成された一側と同じ側の内輪３０の端部が外輪鍔部２２の軸受内方に対向して、内輪３０の一側端部３８とされている。なお、外輪２０および内輪３０はプレス加工により形成される。 FIG. 1 shows a partial cross-sectional view of a clutch release bearing 10 in Embodiment 1 of the present invention. The clutch release bearing 10 is an outer ring rotating type clutch including an outer ring 20, an inner ring 30, a plurality of balls (rolling elements) 14 disposed between the outer ring 20 and the inner ring 30, and a cage 16. Release bearing.
An outer ring flange 22 extending radially inward is formed at one end of the outer ring 20, and the outer surface of the outer ring flange 22 is a contact surface 24 with which the diaphragm spring 12 contacts. The diaphragm spring 12 is a rotating member of the clutch mechanism of the present invention. The end portion of the inner ring 30 on the same side as the one side on which the outer ring flange portion 22 is formed is opposed to the bearing inner side of the outer ring flange portion 22 to be one side end portion 38 of the inner ring 30. The outer ring 20 and the inner ring 30 are formed by pressing.

そして、外輪鍔部２２の軸受内方には外輪２０の内径面２８に固定され径方向内方へ延設された遮蔽部材４０が配設されている。遮蔽部材４０は金属製であって、外輪２０の内径面に圧入され固定されている。そして、遮蔽部材４０の内径側先端４２は内輪３０とは非接触とされている。なお、遮蔽部材４０は樹脂製とすることもできる。   A shielding member 40 fixed to the inner diameter surface 28 of the outer ring 20 and extending radially inward is disposed inside the bearing of the outer ring collar portion 22. The shielding member 40 is made of metal, and is press-fitted and fixed to the inner surface of the outer ring 20. The inner diameter side tip 42 of the shielding member 40 is not in contact with the inner ring 30. The shielding member 40 may be made of resin.

そして、クラッチレリーズ軸受１０の他端部には、外輪２０に外嵌めされた第２シール部材６０が装着されており、第２シール部材６０の先端に形成されたシールリップ６２が内輪３０の外周面に摺接する構成とされている。そして、第２シール部材６０の軸受外方には、内輪３０に内嵌めされたスリンガ６４が、第２シール部材６０に近接して配設されている。   A second seal member 60 fitted on the outer ring 20 is attached to the other end of the clutch release bearing 10, and a seal lip 62 formed at the tip of the second seal member 60 is an outer periphery of the inner ring 30. It is set as the structure which slidably contacts a surface. A slinger 64 fitted in the inner ring 30 is disposed in the vicinity of the second seal member 60 on the outer side of the bearing of the second seal member 60.

この実施例１によれば、遮蔽部材４０は外輪鍔部２２の軸受内側に配設されており、クラッチレリーズ軸受１０のフロント側の外側に部品を設置することはない。そして、外輪２０の内径面２８に固定された遮蔽部材４０は内輪３０と非接触であるため、トルクが増大することはない。また、遮蔽部材４０が外輪鍔部２２の軸受内方で外輪２０の内径面２８に固定されているので、外輪鍔部２２と内輪３０の一側端部３８の間から泥水等の異物が軸受内部に侵入した場合でも、異物は外輪２０および遮蔽部材４０の回転による遠心力により軸受内部の径方向外方へ導かれ、外輪２０の内径側の外輪鍔部２２と遮蔽部材４０の間で行き止まりとなる。よって、泥水等の異物が遮蔽部材４０の軸方向内方まで侵入することがないので、遮蔽部材４０の軸方向内方に封入されているグリース等の潤滑油と泥水の混合によるグリースの劣化、錆びの発生等を抑止することができ、軸受の寿命の低下を抑止することができる。
よって、軸受のフロント側の外側に部品を設置することなく、トルクが増大することなく、かつ、水が軸受内部に侵入しにくいシール構造としたクラッチレリーズ軸受を提供することができる。 According to the first embodiment, the shielding member 40 is disposed inside the bearing of the outer ring collar portion 22, and no parts are installed outside the front side of the clutch release bearing 10. And since the shielding member 40 fixed to the inner diameter surface 28 of the outer ring 20 is not in contact with the inner ring 30, the torque does not increase. Further, since the shielding member 40 is fixed to the inner diameter surface 28 of the outer ring 20 on the inner side of the bearing of the outer ring flange part 22, foreign matters such as muddy water are generated between the outer ring flange part 22 and the one side end 38 of the inner ring 30. Even if it enters the inside, the foreign matter is guided radially outward in the bearing by the centrifugal force generated by the rotation of the outer ring 20 and the shielding member 40, and stops between the outer ring flange 22 on the inner diameter side of the outer ring 20 and the shielding member 40. It becomes. Therefore, since foreign matter such as muddy water does not enter the axial direction inward of the shielding member 40, grease deterioration due to mixing of lubricating oil such as grease and mud water sealed in the axially inward direction of the shielding member 40, The occurrence of rust and the like can be suppressed, and a decrease in bearing life can be suppressed.
Therefore, it is possible to provide a clutch release bearing having a seal structure in which no components are installed on the outer side of the bearing, torque is not increased, and water does not easily enter the bearing.

なお、実施例１では、遮蔽部材４０の内径側先端４２の向きを軸線方向に垂直としているが、内径側先端４２を軸受内方に傾斜させる構成としてもよい。遮蔽部材４０の内径側先端４２を軸受内方に傾斜させれば、遮蔽部材４０の回転による遠心力により、遮蔽部材４０の内径側先端４２の付近に介在する泥水等の異物を、遮蔽部材４０と外輪鍔部２２の間の径方向外方へ導くことができる。よって、遮蔽部材４０の内径側先端４２と内輪３０の隙間から異物が軸受内方に侵入するのを抑止することができる。また、遮蔽部材４０の内径側先端４２を軸受内方に傾斜させ、さらに、遮蔽部材４０の内径側先端４２を内輪３０の外径面に近接させた状態で軸受内方へ軸線方向に延設してもよい。   In the first embodiment, the direction of the inner diameter side tip 42 of the shielding member 40 is perpendicular to the axial direction, but the inner diameter side tip 42 may be inclined inward of the bearing. If the inner diameter side tip 42 of the shielding member 40 is tilted inward of the bearing, foreign matter such as muddy water intervening in the vicinity of the inner diameter side tip 42 of the shielding member 40 is removed by the centrifugal force due to the rotation of the shielding member 40. And the outer ring flange portion 22 can be guided outward in the radial direction. Therefore, foreign matter can be prevented from entering the bearing from the gap between the inner diameter side tip 42 of the shielding member 40 and the inner ring 30. Further, the inner diameter side distal end 42 of the shielding member 40 is inclined inward of the bearing, and further, the inner diameter side distal end 42 of the shielding member 40 is extended in the axial direction inward of the bearing in a state of being close to the outer diameter surface of the inner ring 30. May be.

図２に本発明の実施例２におけるクラッチレリーズ軸受１０Ａの部分断面図を示す。クラッチレリーズ軸受１０Ａは外輪２０と、内輪３０と、外輪２０と内輪３０の間に転動可能に配置された複数の玉（転動体）１４と、保持器１６とを備えた外輪回転タイプのクラッチレリーズ軸受である。
そして、外輪２０の一端部には径方向内方に延びる外輪鍔部２２が形成されると共に、外輪鍔部２２の軸受外方の側面はダイヤフラムスプリング１２が接触する接触面２４とされている。そして、外輪鍔部２２が形成された一側と同じ側の内輪３０の一端部には、径方向内方に延びる内輪鍔部３４が外輪鍔部２２と所定の間隔をおいて形成されている。この内輪鍔部３４の外輪鍔部２２側の側面が、本発明の内輪３０の一側端部３８である。そして、内輪３０には、内輪鍔部３４から軸受内方に、軸線方向に円筒形の筒状部３２が形成されている。なお、外輪２０および内輪３０は実施例１と同様に、プレス加工により形成される。 FIG. 2 shows a partial cross-sectional view of the clutch release bearing 10A according to the second embodiment of the present invention. The clutch release bearing 10 </ b> A is an outer ring rotating type clutch including an outer ring 20, an inner ring 30, a plurality of balls (rolling elements) 14 disposed so as to be able to roll between the outer ring 20 and the inner ring 30, and a cage 16. Release bearing.
An outer ring flange 22 extending radially inward is formed at one end of the outer ring 20, and the outer surface of the outer ring flange 22 is a contact surface 24 with which the diaphragm spring 12 contacts. An inner ring flange 34 extending radially inward is formed at one end of the inner ring 30 on the same side as the one where the outer ring flange 22 is formed at a predetermined interval from the outer ring flange 22. . A side surface of the inner ring flange portion 34 on the outer ring flange portion 22 side is a side end portion 38 of the inner ring 30 of the present invention. The inner ring 30 is formed with a cylindrical cylindrical portion 32 in the axial direction from the inner ring collar 34 to the inside of the bearing. The outer ring 20 and the inner ring 30 are formed by pressing as in the first embodiment.

そして、内輪３０の筒状部３２から内輪鍔部３４に跨って、第１シール部材５０が配設されている。この第１シール部材５０が本発明のシール部材に相当する。この第１シール部材５０は、金属製の芯金５２にゴム製の被覆部５４を装着した円環状の部材であって、軸受の組立時に内輪３０に対して内輪鍔部３４が形成された側から圧入され、内輪３０の筒状部３２に形成された係合溝３６に係合して内輪３０に固定されている。そして、第１シール部材５０は、被覆部５４と一体で形成されたゴム製のアキシアルリップ５６を備えている。
そして、アキシアルリップ５６は、外輪鍔部２２の先端２６と狭小な間隔で近接し外輪２０と非接触とされている。なお、実施例２では被覆部５４およびアキシアルリップ５６をゴム製としているが、これらは、軟質樹脂製としても良い。
なお、クラッチレリーズ軸受１０Ａの他端部は実施例１と同様の構成であるので、同一の符号を付して説明を省略する。 A first seal member 50 is disposed from the tubular portion 32 of the inner ring 30 to the inner ring collar portion 34. The first seal member 50 corresponds to the seal member of the present invention. The first seal member 50 is an annular member in which a rubber core 54 is attached to a metal core 52, and the side on which the inner ring collar 34 is formed with respect to the inner ring 30 when the bearing is assembled. And is engaged with an engaging groove 36 formed in the cylindrical portion 32 of the inner ring 30 and fixed to the inner ring 30. The first seal member 50 includes a rubber axial lip 56 formed integrally with the covering portion 54.
The axial lip 56 is close to the front end 26 of the outer ring collar portion 22 at a narrow interval and is not in contact with the outer ring 20. In the second embodiment, the covering portion 54 and the axial lip 56 are made of rubber, but they may be made of a soft resin.
Since the other end of the clutch release bearing 10A has the same configuration as that of the first embodiment, the same reference numerals are given and description thereof is omitted.

そして、外輪鍔部２２の軸受内方には外輪２０の内径面２８に固定され径方向内方へ延設された遮蔽部材４０が配設されている。遮蔽部材４０は金属製であって、外輪２０の内径面に圧入され固定されている。そして、遮蔽部材４０の内径側先端４２は第１シール部材５０とは非接触とされている。なお、遮蔽部材４０は樹脂製とすることもできる。   A shielding member 40 fixed to the inner diameter surface 28 of the outer ring 20 and extending radially inward is disposed inside the bearing of the outer ring collar portion 22. The shielding member 40 is made of metal, and is press-fitted and fixed to the inner surface of the outer ring 20. The inner diameter side tip 42 of the shielding member 40 is not in contact with the first seal member 50. The shielding member 40 may be made of resin.

この実施例２によれば、第１シール部材５０は外輪鍔部２２と内輪３０の一側端部３８の間に配設され、クラッチレリーズ軸受１０Ａのフロント側の外側に部品を設置することはない。そして、内輪３０の一側端部３８に固定された第１シール部材５０が外輪鍔部２２と非接触の近接状態でラビリンスを形成するので、外輪鍔部２２と第１シール部材５０の隙間からの泥水等の異物の軸受内部への侵入が抑止される。また、遮蔽部材４０が外輪鍔部２２の軸受内方で外輪２０の内径面２８に固定されているので、泥水等の異物が外輪鍔部２２とシール部材４０の隙間から軸受内部に侵入した場合でも、異物は外輪２０と遮蔽部材４０の回転による遠心力により軸受内部の径方向外方へ導かれ、外輪２０の内径側の外輪鍔部２２と遮蔽部材４０の間で行き止まりとなる。よって、泥水等の異物が遮蔽部材４０の軸方向内方まで侵入することがない。よって、グリース等の潤滑油が封入された部位への異物の侵入が抑止される。なお、第１シール部材５０は外輪鍔部２２及び遮蔽部材４０と非接触のため、トルクが増大することはない。   According to the second embodiment, the first seal member 50 is disposed between the outer ring flange portion 22 and the one end 38 of the inner ring 30, and it is possible to install components outside the front side of the clutch release bearing 10 </ b> A. Absent. And since the 1st seal member 50 fixed to the one side edge part 38 of the inner ring | wheel 30 forms a labyrinth in the non-contact proximity | contact state with the outer ring collar part 22, it is from the clearance gap between the outer ring collar part 22 and the 1st seal member 50. Intrusion of foreign matter such as muddy water into the bearing is suppressed. In addition, since the shielding member 40 is fixed to the inner diameter surface 28 of the outer ring 20 inside the bearing of the outer ring flange part 22, foreign matter such as muddy water enters the bearing through the gap between the outer ring flange part 22 and the seal member 40. However, the foreign matter is guided radially outward in the bearing by the centrifugal force generated by the rotation of the outer ring 20 and the shielding member 40, and becomes a dead end between the outer ring flange portion 22 on the inner diameter side of the outer ring 20 and the shielding member 40. Therefore, foreign matter such as muddy water does not enter the inside of the shielding member 40 in the axial direction. Therefore, the entry of foreign matter into a portion in which lubricating oil such as grease is enclosed is suppressed. Since the first seal member 50 is not in contact with the outer ring collar portion 22 and the shielding member 40, the torque does not increase.

図３に本発明の実施例３におけるクラッチレリーズ軸受１０Ｂの部分断面図を示す。クラッチレリーズ軸受１０Ｂは、遮蔽部材４０の径方向内方の内径側の先端部が軸受内方に折り曲げられ、軸線方向で所定の幅を有する内径側先端４２が形成されて、断面がコの字型の円環状とされていること、および、遮蔽部材４０の内径側先端４２が第１シール部材５０と非接触の近接状態とされていることを特徴とする。
また、第１シール部材５０には外輪鍔部２２と遮蔽部材４０の間隙に延設され、外輪鍔部２２とは非接触とされ、遮蔽部材４０とは非接触の近接状態とされたシールリップ５８が形成されていることを特徴とする。
なお、実施例３のクラッチレリーズ軸受１０Ｂの他の構成は実施例２のクラッチレリーズ軸受１０Ａと同様であるので、同じ符号を付して、詳細な説明は省略する。 FIG. 3 shows a partial cross-sectional view of the clutch release bearing 10B according to the third embodiment of the present invention. The clutch release bearing 10B has a distal end portion on the radially inner diameter side of the shielding member 40 that is bent inwardly to form an inner diameter side distal end 42 having a predetermined width in the axial direction, and has a U-shaped cross section. It is characterized by being an annular shape of the mold, and an inner diameter side tip 42 of the shielding member 40 being in a non-contact proximity state with the first seal member 50.
Further, the first seal member 50 extends in the gap between the outer ring collar portion 22 and the shielding member 40, is not in contact with the outer ring collar portion 22, and is in a non-contact proximity state with the shielding member 40. 58 is formed.
In addition, since the other structure of the clutch release bearing 10B of Example 3 is the same as that of the clutch release bearing 10A of Example 2, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

この実施例３によれば、第１シール部材５０のシールリップ５８が蓋の役割をして、遮蔽部材４０と第１シール部材５０の径方向の隙間を軸受外方から覆う。そのため、外輪鍔部２２と第１シール部材５０の隙間から泥水等の異物が軸受内部に侵入した場合でも、シールリップ５８により塞がれた遮蔽部材４０と第１シール部材５０の径方向の隙間に異物は侵入することができない。
また、異物がシールリップ５８の先端に達した場合でも、シールリップ５８の先端よりも径方向外方では、外輪２０の内径面２８に固定された遮蔽部材４０により異物の軸受内方への侵入が抑止され、シールリップ５８の先端よりも径方向内方では、シールリップ５８と遮蔽部材４０によって形成されるラビリンスにより異物の軸受内方への侵入が抑止される。 According to the third embodiment, the seal lip 58 of the first seal member 50 serves as a lid, and covers the radial gap between the shielding member 40 and the first seal member 50 from the outside of the bearing. Therefore, even when foreign matter such as muddy water enters the inside of the bearing from the gap between the outer ring flange portion 22 and the first seal member 50, the radial gap between the shielding member 40 and the first seal member 50 that is blocked by the seal lip 58. No foreign material can enter.
Even when the foreign matter reaches the tip of the seal lip 58, the foreign member enters the inside of the bearing by the shielding member 40 fixed to the inner diameter surface 28 of the outer ring 20 on the radially outer side than the tip of the seal lip 58. In the radial direction from the front end of the seal lip 58, the labyrinth formed by the seal lip 58 and the shielding member 40 prevents foreign matter from entering the bearing.

また、この実施例３によれば、遮蔽部材４０の内径側先端４２と第１シール部材５０により、遠心力が働く方向と垂直な軸線方向のラビリンスが形成されるが、ラビリンスは遮蔽部材４０の回転によって異物が軸受内部に導かれる構造ではない。よって、外輪鍔部２２と第１シール部材５０の隙間からの泥水等の異物が軸受内部へ侵入し、異物が遮蔽部材４０の内径側先端４２と第１シール部材５０の隙間に達した場合でも、遮蔽部材４０の内径側先端４２と第１シール部材５０によって形成されるラビリンスにより、異物の軸受内方への侵入が抑止される。   Further, according to the third embodiment, the labyrinth in the axial direction perpendicular to the direction in which the centrifugal force acts is formed by the inner end 42 of the shielding member 40 and the first seal member 50. It is not a structure in which foreign matter is guided into the bearing by rotation. Therefore, even when foreign matter such as muddy water from the gap between the outer ring flange portion 22 and the first seal member 50 enters the bearing, the foreign matter reaches the gap between the inner diameter side tip 42 of the shielding member 40 and the first seal member 50. The labyrinth formed by the inner diameter side tip 42 of the shielding member 40 and the first seal member 50 prevents foreign matter from entering the inside of the bearing.

上記の各実施例では、外輪の内径面に固定される遮蔽部材は、外輪に圧入される構成としているが、遮蔽部材をＣリング構造とし、外輪の内径面に溝を形成して、溝に嵌め込む構成としてもよい。その他、本発明に係るクラッチレリーズ軸受はその発明の思想の範囲で、各種の形態で実施できるものである。   In each of the above embodiments, the shielding member fixed to the inner ring surface of the outer ring is configured to be press-fitted into the outer ring. However, the shielding member has a C-ring structure, and a groove is formed on the inner ring surface of the outer ring. It is good also as a structure to insert. In addition, the clutch release bearing according to the present invention can be implemented in various forms within the scope of the idea of the invention.

実施例１におけるクラッチレリーズ軸受の部分断面図である。It is a fragmentary sectional view of the clutch release bearing in Example 1. 実施例２におけるクラッチレリーズ軸受の部分断面図である。It is a fragmentary sectional view of the clutch release bearing in Example 2. 実施例３におけるクラッチレリーズ軸受の部分断面図である。It is a fragmentary sectional view of the clutch release bearing in Example 3. 従来技術によるクラッチレリーズ軸受の部分断面図である。It is a fragmentary sectional view of the clutch release bearing by a prior art.

符号の説明Explanation of symbols

１０、１０Ａ、１０Ｂ クラッチレリーズ軸受
１２ ダイヤフラムスプリング
１４ 玉（転動体）
１６ 保持器
２０ 外輪
２２ 外輪鍔部
２４ 接触面
２６ 先端
３０ 内輪
３２ 筒状部
３４ 内輪鍔部
３６ 係合溝
３８ 一側端部
４０ 遮蔽部材
４２ 内径側先端
５０ 第１シール部材
５２ 芯金
５４ 被覆部
５６ アキシアルリップ
５８ シールリップ
６０ 第２シール部材
６２ シールリップ
６４ スリンガ
10, 10A, 10B Clutch release bearing 12 Diaphragm spring 14 Ball (rolling element)
16 Cage 20 Outer ring 22 Outer ring flange 24 Contact surface 26 End 30 Inner ring 32 Tubular portion 34 Inner ring flange 36 Engaging groove 38 One end 40 Shield member 42 Inner diameter end 50 First seal member 52 Core metal 54 Cover Portion 56 Axial lip 58 Seal lip 60 Second seal member 62 Seal lip 64 Slinger

Claims (4)

外輪と、内輪と、外輪と内輪の間に転動可能に配置された複数の転動体と、転動体を回動自在に保持する保持器を備え、
前記外輪の一側端部には径方向内方に延びる外輪鍔部が形成されると共に、該外輪鍔部の軸受外部の側面はクラッチ機構の回転部材が接触する接触面とされ、該外輪鍔部が形成された一側と同じ側に該外輪鍔部から軸受内方に所定の間隔をおいて前記内輪の一側端部が形成された、クラッチレリーズ軸受であって、
前記外輪鍔部の軸受内方には外輪の内径面に固定され径方向内方へ延設された遮蔽部材が配設されており、該遮蔽部材は前記内輪と非接触とされていることを特徴とするクラッチレリーズ軸受。 An outer ring, an inner ring, a plurality of rolling elements arranged to roll between the outer ring and the inner ring, and a retainer that rotatably holds the rolling element,
An outer ring flange portion extending radially inward is formed at one end of the outer ring, and a side surface outside the bearing of the outer ring flange portion is a contact surface with which a rotating member of the clutch mechanism comes into contact. A clutch release bearing in which one end of the inner ring is formed at a predetermined interval from the outer ring flange to the inside of the bearing on the same side as the one side on which the part is formed,
A shielding member fixed to the inner diameter surface of the outer ring and extending radially inward is disposed inside the bearing of the outer ring collar portion, and the shielding member is not in contact with the inner ring. A featured clutch release bearing. 請求項１に記載のクラッチレリーズ軸受であって、
前記外輪鍔部と前記内輪の一側端部の間には、該内輪の一側端部に固定され、該外輪鍔部とは非接触の近接状態とされたシール部材が配設されており、
前記シール部材は前記遮蔽部材と非接触とされていることを特徴とするクラッチレリーズ軸受。 The clutch release bearing according to claim 1,
Between the outer ring collar part and one side end part of the inner ring, a seal member fixed to the one side end part of the inner ring and in a non-contact proximity state with the outer ring collar part is disposed. ,
The clutch release bearing, wherein the seal member is not in contact with the shielding member. 請求項２に記載のクラッチレリーズ軸受であって、
前記遮蔽部材の径方向内方の先端は軸線方向で所定の幅を有し、該遮蔽部材の径方向内方の先端が前記シール部材と非接触の近接状態とされていることを特徴とするクラッチレリーズ軸受。 The clutch release bearing according to claim 2,
The radially inner tip of the shielding member has a predetermined width in the axial direction, and the radially inner tip of the shielding member is in a non-contact proximity state with the seal member. Clutch release bearing. 請求項２または請求項３に記載のクラッチレリーズ軸受であって、
前記シール部材には前記外輪鍔部と前記遮蔽部材の間隙に延設され、該外輪鍔部とは非接触とされ、該遮蔽部材とは非接触の近接状態とされたシールリップが形成されていることを特徴とするクラッチレリーズ軸受。
The clutch release bearing according to claim 2 or claim 3,
The seal member is provided with a seal lip that extends in a gap between the outer ring collar portion and the shielding member, is not in contact with the outer ring collar portion, and is not in contact with the shielding member. Clutch release bearing characterized by that.
JP2008137942A 2008-05-27 2008-05-27 Clutch release bearing Pending JP2009287602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008137942A JP2009287602A (en) 2008-05-27 2008-05-27 Clutch release bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008137942A JP2009287602A (en) 2008-05-27 2008-05-27 Clutch release bearing

Publications (1)

Publication Number Publication Date
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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971825A1 (en) * 2011-02-22 2012-08-24 Skf Ab Rolling bearing for use in clutch release bearing device arranged on diaphragm of clutch of motor vehicle, has metallic rigid stop portions cooperating by contact with rolling elements to limit angular tilting of movable outer ring
CN104653629A (en) * 2013-11-19 2015-05-27 Skf公司 Process for producing bearing outer ring and clutch release bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971825A1 (en) * 2011-02-22 2012-08-24 Skf Ab Rolling bearing for use in clutch release bearing device arranged on diaphragm of clutch of motor vehicle, has metallic rigid stop portions cooperating by contact with rolling elements to limit angular tilting of movable outer ring
CN104653629A (en) * 2013-11-19 2015-05-27 Skf公司 Process for producing bearing outer ring and clutch release bearing
CN104653629B (en) * 2013-11-19 2018-09-18 Skf公司 Method for manufacturing bearing outer ring and clutch release bearing device

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