JP2017110707A - One-way clutch - Google Patents

One-way clutch Download PDF

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JP2017110707A
JP2017110707A JP2015244488A JP2015244488A JP2017110707A JP 2017110707 A JP2017110707 A JP 2017110707A JP 2015244488 A JP2015244488 A JP 2015244488A JP 2015244488 A JP2015244488 A JP 2015244488A JP 2017110707 A JP2017110707 A JP 2017110707A
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claw
claw member
way clutch
support portion
columnar
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JP6546083B2 (en
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岐宣 鈴木
Michinobu Suzuki
岐宣 鈴木
雄二 岩瀬
Yuji Iwase
雄二 岩瀬
正太郎 加藤
Seitaro Kato
正太郎 加藤
充孝 土田
Mitsutaka Tsuchida
充孝 土田
陽太 水野
Yota Mizuno
陽太 水野
加藤　晃一
Koichi Kato
晃一 加藤
山田　隆哉
Takaya Yamada
隆哉 山田
裕之 大石
Hiroyuki Oishi
裕之 大石
宮崎　知之
Tomoyuki Miyazaki
知之 宮崎
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NSK Warner KK
Toyota Motor Corp
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NSK Warner KK
Toyota Motor Corp
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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a one-way clutch capable of suppressing undesired behavior of a claw member, and suppressing occurrence of wear/breakage by bending/curving of a spring as a bias member, and component loss/cracking by collision.SOLUTION: In a one-way clutch including a first member 10 having an engagement portion 15 on a peripheral face, a second member 20 relatively rotatably disposed on the same axis with the first member, a claw member 30 restricting relative rotation in one direction, of the first member and the second member by being rotatably supported by a support portion 25 formed on the second member at one end and engaged with the engagement portion of the first member at the other end, and an elastic member 40 biasing the claw member toward the first member, a base portion at one end of the claw member includes a columnar portion 30a, the support portion includes a cylindrical support portion 25Aa rotatably supporting the columnar portion, a first restricting portion 25Ab preventing separation of the claw member from the support portion by cooperating with the columnar portion of the claw member, and a second restricting portion 25Ac.SELECTED DRAWING: Figure 1

Description

本発明は、ワンウェイクラッチ、特に、ロック機構にラチェット(爪部材)を用いたラチェット型ワンウェイクラッチに関する。   The present invention relates to a one-way clutch, and more particularly to a ratchet type one-way clutch using a ratchet (claw member) as a lock mechanism.

一般に、ワンウェイクラッチは、相対回転するアウター部材及びインナー部材を有し、アウター部材とインナー部材との間でトルクを伝達するスプラグやローラなどがアウター部材またはインナー部材の軌道面に設けたカム面に噛み合うことで、一方向のみに回転トルクを伝達し、逆方向では空転するように構成されている。   Generally, a one-way clutch has an outer member and an inner member that rotate relative to each other, and a sprag or a roller that transmits torque between the outer member and the inner member is provided on a cam surface provided on a raceway surface of the outer member or the inner member. By meshing, rotational torque is transmitted only in one direction, and idle rotation is performed in the opposite direction.

このようなワンウェイクラッチの中で、アウター部材とインナー部材との間でトルクを伝達するトルク伝達部材としてラチェット(爪部材)を用いたラチェット型ワンウェイクラッチがあり、例えば、図６に示すようなものが知られている（特許文献１参照）。   Among such one-way clutches, there is a ratchet type one-way clutch using a ratchet (claw member) as a torque transmission member for transmitting torque between an outer member and an inner member. For example, as shown in FIG. Is known (see Patent Document 1).

この公知のワンウェイクラッチ１００は、外周にノッチ１１５を有するインナー部材１１０と、インナー部材１１０と同軸上に配置され内周にポケット１２５を有するアウター部材１２０と、前記ポケット１２５に収納されインナー部材１１０のノッチ１１５に係合してワンウェイクラッチをロック状態にし、インナー部材１１０とアウター部材１２０との間でトルクを伝達させる爪部材１３０と、爪部材１３０をインナー部材１１０へ向けて付勢するスプリング１４０などの弾性体と、を備えて構成されている。   The known one-way clutch 100 includes an inner member 110 having a notch 115 on the outer periphery, an outer member 120 coaxially arranged with the inner member 110 and having a pocket 125 on the inner periphery, and the inner member 110 housed in the pocket 125. A claw member 130 that engages with the notch 115 to lock the one-way clutch to transmit torque between the inner member 110 and the outer member 120, a spring 140 that biases the claw member 130 toward the inner member 110, and the like And an elastic body.

かかる構成のラチェット型ワンウェイクラッチ１００は、ワンウェイクラッチ１００が一方向に回転するとき、爪部材１３０がインナー部材１１０の外周に対してフリーで摺動するので、アウター部材１２０とインナー部材１１０とは相対的に空転する。逆に、ワンウェイクラッチ１００が他方向に回転しようとするとき、スプリング１４０で付勢されている爪部材１３０がノッチ１１５に係合し、ワンウェイクラッチ１００はロックアップ状態になる。   In the ratchet type one-way clutch 100 having such a configuration, when the one-way clutch 100 rotates in one direction, the claw member 130 slides freely with respect to the outer periphery of the inner member 110, so that the outer member 120 and the inner member 110 are relatively Idle. On the contrary, when the one-way clutch 100 tries to rotate in the other direction, the claw member 130 urged by the spring 140 engages with the notch 115, and the one-way clutch 100 enters a lock-up state.

特許第４７５００９１号公報Japanese Patent No. 4750091

しかしながら、上述の従来のラチェット型ワンウェイクラッチにおいては、爪部材１３０の基端部１３０Ａを１８０度より小さい円弧角の円弧状周面に形成すると共に、アウター部材１２０の内周のポケット１２５の底部を、同じく１８０度より小さい円弧角の円弧状周面に形成して、爪部材１３０がこれらの円弧状周面を形成する円の中心点を中心として回転（ないしは）揺動するように構成されているために、以下のような不都合がある。   However, in the above-described conventional ratchet type one-way clutch, the base end portion 130A of the pawl member 130 is formed on an arcuate peripheral surface having an arc angle smaller than 180 degrees, and the bottom portion of the inner peripheral pocket 125 of the outer member 120 is formed. The claw member 130 is also formed on an arcuate peripheral surface having an arc angle smaller than 180 degrees, and is configured to rotate (or swing) about the center point of the circle forming the arcuate peripheral surface. Therefore, there are the following disadvantages.

すなわち、アウター部材１２０とインナー部材１１０とが相対的に空転するとき、インナー部材１１０の外周に対してフリーで摺動している爪部材１３０は、スプリング１４０でインナー部材１１０の外周面に対して付勢された状態でそこを摺動しながら、インナー部材１１０のノッチ１１５の鋸状の外周面によって断続的に打撃される。このようなスプリング１４０で付勢された状態での摺動により、爪部材１３０には爪部材１３０をポケット１２５から離脱させようとするインナー部材１１０の周方向の引摺り力が作用する。また、この断続的な打撃により、爪部材１３０は、スプリング１４０による付勢力に抗って跳ね上げられる。   That is, when the outer member 120 and the inner member 110 are idled relatively, the claw member 130 that slides freely with respect to the outer periphery of the inner member 110 is moved by the spring 140 with respect to the outer peripheral surface of the inner member 110. While sliding in the biased state, the inner member 110 is struck intermittently by the saw-shaped outer peripheral surface of the notch 115. Due to the sliding in the state of being biased by the spring 140, the dragging force in the circumferential direction of the inner member 110 that causes the claw member 130 to be detached from the pocket 125 acts on the claw member 130. In addition, the intermittent hitting causes the claw member 130 to spring up against the urging force of the spring 140.

ところが、上述の従来のラチェット型ワンウェイクラッチにおいては、爪部材１３０に作用する周方向の力については考慮されておらず、爪部材１３０が周方向に移動ないしは離脱されるおそれがあった。また、上述の従来のラチェット型ワンウェイクラッチにおいては、爪部材１３０が１８０度より小さい円弧角の円弧状の周面によって揺動可能に支持されていることから、爪部材１３０の揺動可能な範囲が大きい。この結果、上述の断続的な打撃により爪部材１３０が跳ね上げられるとスプリング１４０を過剰に圧縮したり、上述の爪部材１３０の周方向への移動とあいまって爪部材１３０が離脱され、アウター部材１２０やインナー部材１１０の周辺部位に衝突するように挙動し、スプリングの屈曲／湾曲による磨耗／折損や、衝突による部品欠損／亀裂の発生を招くおそれがあった。   However, in the above-described conventional ratchet type one-way clutch, the circumferential force acting on the claw member 130 is not considered, and the claw member 130 may be moved or detached in the circumferential direction. Further, in the above-described conventional ratchet type one-way clutch, the claw member 130 is swingably supported by an arcuate peripheral surface having an arc angle smaller than 180 degrees, so that the claw member 130 can swing. Is big. As a result, when the claw member 130 is flipped up by the intermittent hitting described above, the spring 140 is excessively compressed, or the claw member 130 is detached together with the movement of the claw member 130 in the circumferential direction. 120 and the inner member 110 may be caused to collide with the peripheral portion of the inner member 110, which may cause wear / breakage due to bending / bending of the spring, and occurrence of part loss / crack due to the collision.

そこで、本発明の目的は、爪部材の上述のような移動ないしは離脱とあいまった暴れ挙動を抑制し、付勢部材としてのスプリングの屈曲／湾曲による磨耗／折損や、衝突による部品欠損／亀裂の発生を抑止するワンウェイクラッチを提供することにある。   Accordingly, an object of the present invention is to suppress the above-mentioned movement or separation behavior of the claw member, and to prevent wear / breakage due to bending / curving of the spring as the biasing member, and part loss / crack due to collision. The object is to provide a one-way clutch that suppresses the occurrence.

上記目的を達成するための本発明に係るワンウェイクラッチの一形態は、
周面に係合部を有する第一の部材と、当該第一の部材と同軸上に相対回転可能に配置された第二の部材と、当該第二の部材に形成された支持部によって一端が回転可能に支持され，他端が前記第一の部材の係合部に係合することで第一の部材と第二の部材との一方向の相対回転を規制する爪部材と、当該爪部材を前記第一の部材に向けて付勢する弾性部材と、を備えるワンウェイクラッチにおいて、
前記爪部材の一端の基部は円柱状部を備え、
前記支持部は、
当該円柱状部を回転可能に支持する円筒状支持部と、
前記爪部材の他端が第一の部材の周面に接触しながら第一の部材と第二の部材とが相対回転する状態で、前記爪部材の円柱状部と協働して当該爪部材が前記支持部から離脱するのを妨げる第一の規制部と、
前記爪部材の他端が第一の部材の周面に接触せずに第一の部材と第二の部材とが相対回転する状態で、前記爪部材の円柱状部と協働して当該爪部材が前記支持部から離脱するのを妨げる第二の規制部と、を備えて構成されていることを特徴とする。 One form of the one-way clutch according to the present invention for achieving the above object is as follows:
One end is formed by a first member having an engaging portion on the peripheral surface, a second member disposed coaxially with the first member so as to be relatively rotatable, and a support portion formed on the second member. A claw member that is rotatably supported and whose other end engages with the engaging portion of the first member to restrict relative rotation in one direction between the first member and the second member, and the claw member In a one-way clutch comprising an elastic member that biases the first member toward the first member,
The base of one end of the claw member includes a columnar part,
The support part is
A cylindrical support that rotatably supports the columnar part;
The claw member cooperates with the columnar portion of the claw member in a state where the first member and the second member rotate relative to each other while the other end of the claw member is in contact with the circumferential surface of the first member. A first restricting portion that prevents the member from separating from the support portion;
The claw member cooperates with the columnar portion of the claw member in a state where the first member and the second member rotate relative to each other without the other end of the claw member contacting the peripheral surface of the first member. And a second restricting portion that prevents the member from detaching from the support portion.

このように構成された本発明の一形態においては、爪部材の他端が第一の部材の周面に接触しながら第一の部材と第二の部材とが相対回転するとき、すなわち、ワンウェイクラッチの空転状態で爪部材に引摺り力が作用するときは、爪部材の円柱状部と協働して爪部材が支持部から離脱するのを妨げる第一の規制部によって、爪部材の移動ないしは離脱が妨げられる。また、爪部材の他端が第一の部材の周面に接触せずに第一の部材と第二の部材とが相対回転するとき、すなわち、ワンウェイクラッチの空転状態で爪部材が跳ね上げられたときは、爪部材の円柱状部と協働して爪部材が支持部から離脱するのを妨げる第二の規制部によって、爪部材の移動ないしは離脱が妨げられる。   In one form of the present invention configured as described above, when the first member and the second member rotate relative to each other while the other end of the claw member is in contact with the peripheral surface of the first member, that is, one-way. When a drag force acts on the claw member in the idling state of the clutch, the claw member is moved by the first restricting portion that prevents the claw member from being detached from the support portion in cooperation with the columnar portion of the claw member. Or the withdrawal is hindered. In addition, when the first member and the second member rotate relative to each other without the other end of the pawl member coming into contact with the circumferential surface of the first member, that is, when the one-way clutch is idling, the pawl member is flipped up. In this case, the movement or separation of the claw member is prevented by the second restricting portion that prevents the claw member from being detached from the support portion in cooperation with the columnar portion of the claw member.

したがって、上記した本発明の一形態によれば、爪部材の移動ないしは離脱とあいまった暴れ挙動が抑制され、付勢部材としてのスプリングの屈曲／湾曲による磨耗／折損や、衝突による部品欠損／亀裂の発生を抑止する効果が得られる。   Therefore, according to the embodiment of the present invention described above, the rampage behavior combined with the movement or separation of the claw member is suppressed, and wear / breakage due to bending / curving of the spring as the biasing member, or part loss / crack due to collision. The effect which suppresses generation | occurrence | production of is acquired.

本発明に係るワンウェイクラッチの一実施形態の部分断面図である。It is a fragmentary sectional view of one embodiment of the one-way clutch concerning the present invention. 図１の実施の形態における爪部材の側面図である。It is a side view of the nail | claw member in embodiment of FIG. 図１の実施の形態におけるアウター部材の部分断面図である。It is a fragmentary sectional view of the outer member in the embodiment of FIG. 図１の実施の形態において爪部材がインナー部材の係合部に係合している状態を示す部分断面図である。It is a fragmentary sectional view which shows the state which the nail | claw member has engaged with the engaging part of the inner member in embodiment of FIG. 図１の実施の形態において爪部材がインナー部材の係合部から外れている状態を示す部分断面図である。It is a fragmentary sectional view which shows the state which the nail | claw member has remove | deviated from the engaging part of the inner member in embodiment of FIG. 従来例におけるワンウェイクラッチの部分断面図である。It is a fragmentary sectional view of the one-way clutch in a prior art example.

以下、添付図面を参照して本発明の実施形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図１において、本実施形態に係るワンウェイクラッチは、周面に係合部としてのノッチ１５を有する、第一部材としてのリング状のインナー部材１０と、インナー部材１０と同軸上でその外周側に相対回転自在に配置された、第二の部材としてのリング状のアウター部材２０と、アウター部材２０に形成されたポケット状の支持部２５によって一端が回転可能に支持され，他端がインナー部材１０のノッチ１５に係合することでインナー部材１０とアウター部材２０との一方向の相対回転を規制する爪部材３０と、爪部材３０をインナー部材１０の方向に付勢する弾性部材としてのスプリング４０とを備えて構成されている。   In FIG. 1, the one-way clutch according to the present embodiment has a notch 15 as an engaging portion on the peripheral surface, a ring-shaped inner member 10 as a first member, and coaxially with the inner member 10 on the outer peripheral side thereof. One end is rotatably supported by a ring-shaped outer member 20 as a second member and a pocket-shaped support portion 25 formed on the outer member 20, and the other end is supported by the inner member 10. A claw member 30 that restricts relative rotation in one direction between the inner member 10 and the outer member 20 by engaging with the notch 15, and a spring 40 as an elastic member that urges the claw member 30 toward the inner member 10. And is configured.

そして、本実施形態に係るワンウェイクラッチ機構は、例えば、車両の自動変速機に用いられるトルクコンバータのステータ装置（不図示）に、インナー部材１０がケーシングに固定され、アウター部材２０がステータ羽根車に連結される形態で用いられる。   In the one-way clutch mechanism according to the present embodiment, for example, an inner member 10 is fixed to a casing and an outer member 20 is a stator impeller to a stator device (not shown) of a torque converter used in an automatic transmission of a vehicle. Used in linked form.

また、図１に示されるように、インナー部材１０の外周面１２に設けられている複数のノッチ（段部）１５は、円周方向でほぼ等間隔に配置されている。このノッチ１５は、後述するように、爪部材３０の他端部に面接触して係合する面係合部１５aと、この面係合部１５aの最下端から外周面１２に緩やかに連なる傾斜湾曲面１５bとを有して形成されている。   Further, as shown in FIG. 1, the plurality of notches (steps) 15 provided on the outer peripheral surface 12 of the inner member 10 are arranged at substantially equal intervals in the circumferential direction. As will be described later, the notch 15 includes a surface engaging portion 15a that is brought into surface contact with the other end portion of the claw member 30 and an inclined surface that is gently connected to the outer peripheral surface 12 from the lowermost end of the surface engaging portion 15a. And a curved surface 15b.

さらに、本実施形態に係る爪部材３０は、図２に示すように、その一端に形成され中心３０oを有する円柱状の基部３０aと、この基部３０aから延伸された延伸部３０bと、上述したノッチ１５の面係合部１５aに係合する他端の係合部３０cとを備えて形成されている。また、円柱状の基部３０aから延伸されている延伸部３０bの根元部位には、両側にくびれ部３０ｄが形成されている。   Further, as shown in FIG. 2, the claw member 30 according to the present embodiment includes a cylindrical base portion 30a formed at one end thereof and having a center 30o, an extended portion 30b extended from the base portion 30a, and the notch described above. The other end engaging portion 30c is engaged with the surface engaging portion 15a. Further, constricted portions 30d are formed on both sides at the root portion of the extended portion 30b extended from the columnar base portion 30a.

さらに、アウター部材２０の内周には、図３に詳しく示すように、爪部材３０の一端を回転可能に支持するポケット状の第一支持部２５Ａ，及びこの第一支持部２５Ａに隣接して第二支持部２５Ｂが形成されている。なお，この第一支持部２５Ａ及び隣接する第二支持部２５Ｂも円周方向に等間隔に配置されている。   Further, as shown in detail in FIG. 3, the outer periphery of the outer member 20 is adjacent to the pocket-shaped first support portion 25 </ b> A for rotatably supporting one end of the claw member 30, and the first support portion 25 </ b> A. A second support portion 25B is formed. The first support portion 25A and the adjacent second support portion 25B are also arranged at equal intervals in the circumferential direction.

ここで、爪部材３０を回転可能に支持する第一支持部２５Ａは、爪部材３０の円柱状部３０aを回転可能に支持する円筒状支持部２５Ａaと、この円筒状支持部２５Ａaを挟む両側の、第一の規制部２５Ａb及び第二の規制部２５Ａcとから構成されている。なお、円筒状支持部２５Ａaは、爪部材３０の円柱状部３０aの直径を超えて円柱状部３０aを囲繞している、換言すると、円筒状支持部２５Ａaの円弧状周面の円弧角は１８０度より大きく、第一の規制部２５Ａbと第二の規制部２５Ａcとの間の間隔は爪部材３０の円柱状部３０aの直径よりも狭く形成されている。   Here, the first support portion 25A that rotatably supports the claw member 30 includes a cylindrical support portion 25Aa that rotatably supports the columnar portion 30a of the claw member 30, and both sides sandwiching the cylindrical support portion 25Aa. The first restricting portion 25Ab and the second restricting portion 25Ac are configured. The cylindrical support portion 25Aa surrounds the columnar portion 30a beyond the diameter of the columnar portion 30a of the claw member 30. In other words, the arc angle of the arcuate circumferential surface of the cylindrical support portion 25Aa is 180. The interval between the first restricting portion 25Ab and the second restricting portion 25Ac is smaller than the diameter of the columnar portion 30a of the claw member 30.

また、ドーム状の第二支持部２５Ｂには、図１に示すように、爪部材３０をインナー部材１０４に対して付勢する、すなわちノッチ１５に噛合う方向に爪部材３０を付勢するスプリング４０がスプリングリテーナ４２を介して支持されている。   Further, as shown in FIG. 1, the dome-shaped second support portion 25 </ b> B biases the claw member 30 against the inner member 104, that is, a spring that biases the claw member 30 in a direction to mesh with the notch 15. 40 is supported via a spring retainer 42.

上述のように構成された本発明の実施形態に係るワンウェイクラッチは、インナー部材１０が固定された状態でアウター部材２０が反時計回りに回転するとき、又はアウター部材２０が固定された状態でインナー部材１０が時計回りに回転するときは、スプリング４０で付勢されている爪部材３０がインナー部材１０のノッチ１５に係合し、インナー部材１０とアウター部材２０との相対回転が規制される。   In the one-way clutch according to the embodiment of the present invention configured as described above, the outer member 20 rotates counterclockwise with the inner member 10 fixed, or the inner member 10 with the outer member 20 fixed. When the member 10 rotates clockwise, the claw member 30 biased by the spring 40 engages with the notch 15 of the inner member 10, and the relative rotation between the inner member 10 and the outer member 20 is restricted.

一方、逆に、インナー部材１０が固定された状態でアウター部材２０が時計回りに回転するとき、又はアウター部材２０が固定された状態でインナー部材１０が反時計回りに回転するときは、インナー部材１０とアウター部材２０との相対回転が許容され、すなわち、両者は空転される。この空転状態では、スプリング４０で付勢されている爪部材３０は、インナー部材１０の外周面１２とそこに設けられたノッチ１５の面係合部１５aと傾斜湾曲面１５bとをなぞるように摺動して連続して上下動する。このスプリング４０で付勢された状態での摺動により、爪部材３０には爪部材３０を第一支持部２５Ａから引摺り離脱させるべく作用するインナー部材１０の周方向の力が生ずる。さらに、相対回転速度が大きいときは、爪部材３０の係合部３０cがノッチ１５の面係合部１５aを通過した途端に傾斜湾曲面１５bに衝突し、この衝突によって爪部材３０はスプリング４０による付勢力に抗って跳ね上げられる。   On the other hand, when the outer member 20 rotates clockwise with the inner member 10 fixed, or when the inner member 10 rotates counterclockwise with the outer member 20 fixed, the inner member 10 and the outer member 20 are allowed to rotate relative to each other, that is, both are idled. In this idling state, the claw member 30 urged by the spring 40 slides so as to trace the outer peripheral surface 12 of the inner member 10, the surface engaging portion 15a of the notch 15 provided therein, and the inclined curved surface 15b. Move up and down continuously. By sliding in a state in which the spring 40 is urged, a force in the circumferential direction of the inner member 10 that acts to drag the claw member 30 away from the first support portion 25A is generated in the claw member 30. Further, when the relative rotational speed is high, the engaging portion 30c of the claw member 30 collides with the inclined curved surface 15b as soon as it passes through the surface engaging portion 15a of the notch 15, and the claw member 30 is caused to spring 40 by this collision. Jumped up against the urging force of.

そこで、このような引摺りや跳ね上げ現象によって爪部材３０が第一支持部２５Ａから離脱されるのを妨げる第一の規制部２５Ａb及び第一の規制部２５Ａcについて、図４及び図５を参照してさらに説明する。   Therefore, for the first restricting portion 25Ab and the first restricting portion 25Ac that prevent the pawl member 30 from being detached from the first support portion 25A due to such dragging and flipping-up phenomenon, see FIGS. Further explanation will be given.

図４に示されるように、第一の規制部２５Ａbは、爪部材３０の円柱状部３０aを回転可能に支持する円筒状支持部２５Ａaに連続して形成されている。そして、この第一の規制部２５Ａbは、上述の引摺りに起因して爪部材３０に作用する引摺り力の方向（白抜きの矢印で示された方向）と平行な、円筒状支持部２５Ａaの外径との接線Ｃに対し、爪部材３０側に張出されている（図４に、ハーフトーンで示されている）。さらに、第一の規制部２５Ａbは、この張出し部位が滑らかな湾曲面で、爪部材３０がスプリング４０を圧縮する方向に回転するとき爪部材３０のくびれ部３０ｄに噛み合うように形成されている。この第一の規制部２５Ａbは、インナー部材１０が固定され、アウター部材２０が時計回りに回転している空転状態にあるとき、前述のように、爪部材３０の円柱状部３０aと協働して爪部材３０が第一支持部２５Ａから離脱するのを妨げると共に爪部材３０の回転量を規制する。   As shown in FIG. 4, the first restricting portion 25Ab is formed continuously with the cylindrical support portion 25Aa that rotatably supports the columnar portion 30a of the claw member 30. And this 1st control part 25Ab is parallel to the direction (direction shown by the white arrow) of the drag force which acts on the nail | claw member 30 resulting from the above-mentioned drag, and is cylindrical support part 25Aa. Is projected to the claw member 30 side with respect to a tangent line C to the outer diameter (shown in halftone in FIG. 4). Further, the first restricting portion 25Ab is formed so that the protruding portion is a smooth curved surface and meshes with the constricted portion 30d of the claw member 30 when the claw member 30 rotates in the direction in which the spring 40 is compressed. The first restricting portion 25Ab cooperates with the columnar portion 30a of the claw member 30 as described above when the inner member 10 is fixed and the outer member 20 is rotating in the clockwise direction. Thus, the claw member 30 is prevented from being detached from the first support portion 25A, and the rotation amount of the claw member 30 is restricted.

また、図５に示されるように、第二の規制部２５Ａcは、爪部材３０の円柱状部３０aを回転可能に支持する円筒状支持部２５Ａaに連続し、第一の規制部２５Ａbに対峙して形成されている。そして、この第二の規制部２５Ａcは、上述の爪部材３０がインナー部材１０のノッチ１５の傾斜湾曲面１５bで跳ね上げられたときに、爪部材３０の円柱状部３０aと協働して爪部材３０が第一支持部２５Ａから離脱するのを妨げるべく形成されている。すなわち、爪部材３０が跳ね上げられたとき、換言すると、爪部材３０がスプリング４０を圧縮する方向に回転するとき、爪部材３０は上述のように第一の規制部２５Ａbの張出し部位に接触した後、その接触部位の回転中心Ｄを支点とした回転動作に変わる。この結果、爪部材３０は円柱状部３０aの中心３０oではなく、回転中心Ｄを中心とする回転軌跡Ｅの矢印方向に移動しようとする。これに対処して、第二の規制部２５Ａcが回転軌跡Ｅに対し、爪部材３０側に張出されている（図５に、ハーフトーンで示されている）。かくて、この第二の規制部２５Ａcにより、爪部材３０の他端の係合部３０cがインナー部材１０の外周面１２に接触せずにインナー部材１０とアウター部材２０とが相対回転する状態、換言すると、爪部材３０がインナー部材１０のノッチ１５（傾斜湾曲面１５b）により爪部材３０が跳ね上げられる場合でも、爪部材３０が第一支持部２５Ａから離脱するのが妨げられるのである。   Further, as shown in FIG. 5, the second restricting portion 25Ac is continuous with the cylindrical support portion 25Aa that rotatably supports the columnar portion 30a of the claw member 30, and confronts the first restricting portion 25Ab. Is formed. The second restricting portion 25Ac cooperates with the columnar portion 30a of the claw member 30 when the claw member 30 is flipped up by the inclined curved surface 15b of the notch 15 of the inner member 10. It is formed to prevent the member 30 from being detached from the first support portion 25A. That is, when the claw member 30 is flipped up, in other words, when the claw member 30 rotates in the direction in which the spring 40 is compressed, the claw member 30 contacts the overhanging portion of the first restricting portion 25Ab as described above. Thereafter, the rotation operation is changed to the rotation center D of the contact portion as a fulcrum. As a result, the claw member 30 tends to move in the arrow direction of the rotation locus E centered on the rotation center D, not the center 30o of the cylindrical portion 30a. In response to this, the second restricting portion 25Ac protrudes toward the claw member 30 with respect to the rotation locus E (shown in halftone in FIG. 5). Thus, by the second restricting portion 25Ac, the engagement portion 30c at the other end of the claw member 30 does not contact the outer peripheral surface 12 of the inner member 10, and the inner member 10 and the outer member 20 are relatively rotated. In other words, even when the claw member 30 is flipped up by the notch 15 (inclined curved surface 15b) of the inner member 10, the claw member 30 is prevented from being detached from the first support portion 25A.

このようにして、爪部材３０の移動ないしは離脱が妨げられる結果、爪部材３０の過度な暴れ挙動が抑制され、スプリング４０の屈曲／湾曲による磨耗／折損や、爪部材３０の衝突による部品欠損／亀裂の発生が抑止される。   In this way, the movement or separation of the claw member 30 is hindered, so that the excessive rampage behavior of the claw member 30 is suppressed, wear / breakage due to bending / curving of the spring 40, and parts missing / Generation of cracks is suppressed.

また、上述の如く、第一の規制部２５Ａbと第二の規制部２５Ａcとの間の間隔が爪部材３０の円柱状部３０aの直径よりも狭く形成されていることによって、本実施形態のワンウェイクラッチ機構が、潤滑油中で用いられるウエットサンプ潤滑方式ではなくドライサンプ潤滑方式で用いられる場合には、爪部材３０の円柱状部３０aと円筒状支持部２５Ａaとの間の摺動面への異物混入が抑制されるという効果を奏することができる。   Further, as described above, the interval between the first restricting portion 25Ab and the second restricting portion 25Ac is formed to be narrower than the diameter of the columnar portion 30a of the claw member 30, so that the one-way of the present embodiment. When the clutch mechanism is used not in the wet sump lubrication method used in the lubricating oil but in the dry sump lubrication method, foreign matter on the sliding surface between the columnar portion 30a of the claw member 30 and the cylindrical support portion 25Aa. The effect that mixing is suppressed can be produced.

なお、上述した実施形態においては、第一の部材及び第二の部材が、それぞれ、インナー部材及びアウター部材であるワンウェイクラッチの例を説明したが、本発明は、両者を入れ替えた例、すなわち、第一の部材及び第二の部材が、それぞれ、アウター部材及びインナー部材であるワンウェイクラッチに適用できることは云うまでもない。この場合には、上述の説明における第一の部材及び第二の部材の語句を、単に、アウター部材及びインナー部材に読み替えればよい。   In the above-described embodiment, an example of a one-way clutch in which the first member and the second member are an inner member and an outer member, respectively, has been described. It goes without saying that the first member and the second member can be applied to a one-way clutch that is an outer member and an inner member, respectively. In this case, the phrase “first member” and “second member” in the above description may be simply read as “outer member” and “inner member”.

さらに、上述したワンウェイクラッチ機構は、車両の自動変速機に用いられるトルクコンバータのステータ装置に用いる例として説明したが、エンジンやモータのような回転機器、又は、フライホイールに代表される慣性回転体において逆回転を防止するワンウェイクラッチ機構として用いることができる。   Furthermore, although the above-described one-way clutch mechanism has been described as an example used in a stator device of a torque converter used in an automatic transmission of a vehicle, a rotary device such as an engine or a motor, or an inertial rotating body represented by a flywheel Can be used as a one-way clutch mechanism for preventing reverse rotation.

１０ インナー部材（第一部材）
１５ ノッチ
１５a 面係合部
１５b 傾斜湾曲面
２０ アウター部材（第二部材）
２５Ａ 第一支持部
２５Ａa 円筒状支持部２５Ａa
２５Ａb 第一規制部
２５Ａc 第二規制部
２５Ｂ 第二支持部
３０ 爪部材３０
３０a 基部
３０b 延伸部
３０c 係合部
３０d くびれ部
４０ スプリング（弾性部材） 10 Inner member (first member)
15 notch 15a surface engaging part 15b inclined curved surface 20 outer member (second member)
25A 1st support part 25Aa Cylindrical support part 25Aa
25Ab first restricting part 25Ac second restricting part 25B second support part 30 claw member 30
30a Base part 30b Extension part 30c Engagement part 30d Constriction part 40 Spring (elastic member)

Claims (1)

周面に係合部を有する第一の部材と、当該第一の部材と同軸上に相対回転可能に配置された第二の部材と、当該第二の部材に形成された支持部によって一端が回転可能に支持され，他端が前記第一の部材の係合部に係合することで第一の部材と第二の部材との一方向の相対回転を規制する爪部材と、当該爪部材を前記第一の部材に向けて付勢する弾性部材と、を備えるワンウェイクラッチにおいて、
前記爪部材の一端の基部は円柱状部を備え、
前記支持部は、
当該円柱状部を回転可能に支持する円筒状支持部と、
前記爪部材の他端が第一の部材の周面に接触しながら第一の部材と第二の部材とが相対回転する状態で、前記爪部材の円柱状部と協働して当該爪部材が前記支持部から離脱するのを妨げる第一の規制部と、
前記爪部材の他端が第一の部材の周面に接触せずに第一の部材と第二の部材とが相対回転する状態で、前記爪部材の円柱状部と協働して当該爪部材が前記支持部から離脱するのを妨げる第二の規制部と、
を備えて構成されていることを特徴とするワンウェイクラッチ。 One end is formed by a first member having an engaging portion on the peripheral surface, a second member disposed coaxially with the first member so as to be relatively rotatable, and a support portion formed on the second member. A claw member that is rotatably supported and whose other end engages with the engaging portion of the first member to restrict relative rotation in one direction between the first member and the second member, and the claw member In a one-way clutch comprising an elastic member that biases the first member toward the first member,
The base of one end of the claw member includes a columnar part,
The support part is
A cylindrical support that rotatably supports the columnar part;
The claw member cooperates with the columnar portion of the claw member in a state where the first member and the second member rotate relative to each other while the other end of the claw member is in contact with the circumferential surface of the first member. A first restricting portion that prevents the member from separating from the support portion;
The claw member cooperates with the columnar portion of the claw member in a state where the first member and the second member rotate relative to each other without the other end of the claw member contacting the peripheral surface of the first member. A second restricting portion that prevents the member from detaching from the support portion;
One-way clutch characterized by being provided with.
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CN112747049A (en) * 2020-12-30 2021-05-04 中国航发沈阳发动机研究所 Ratchet clutch
CN112747047A (en) * 2020-12-30 2021-05-04 中国航发沈阳发动机研究所 Load balancing method of ratchet clutch
CN112747048A (en) * 2020-12-30 2021-05-04 中国航发沈阳发动机研究所 Pawl structure of ratchet clutch
WO2022060607A1 (en) * 2020-09-21 2022-03-24 Schaeffler Technologies AG & Co. KG Centrifugal lift-off ratcheting one-way clutch with rocker pockets

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IT201900000145A1 (en) * 2019-01-08 2020-07-08 Comer Ind Spa SHAFT-HUB CONNECTION SYSTEM WITH ANGULAR CLEARANCE FOR BIDIRECTIONAL TRANSMISSION OF THE DRIVE TORQUE.

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JP2015224744A (en) * 2014-05-29 2015-12-14 Ｎｓｋワーナー株式会社 Ratchet type one-way clutch and claw member setting method

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JPS4939742Y1 (en) * 1970-11-28 1974-10-31
JP2015224744A (en) * 2014-05-29 2015-12-14 Ｎｓｋワーナー株式会社 Ratchet type one-way clutch and claw member setting method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022060607A1 (en) * 2020-09-21 2022-03-24 Schaeffler Technologies AG & Co. KG Centrifugal lift-off ratcheting one-way clutch with rocker pockets
US11708871B2 (en) 2020-09-21 2023-07-25 Schaeffler Technologies AG & Co. KG Centrifugal lift-off ratcheting one-way clutch with rocker pockets
CN112747049A (en) * 2020-12-30 2021-05-04 中国航发沈阳发动机研究所 Ratchet clutch
CN112747047A (en) * 2020-12-30 2021-05-04 中国航发沈阳发动机研究所 Load balancing method of ratchet clutch
CN112747048A (en) * 2020-12-30 2021-05-04 中国航发沈阳发动机研究所 Pawl structure of ratchet clutch

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