JP2003166555A - Clutch unit - Google Patents

Clutch unit

Info

Publication number
JP2003166555A
JP2003166555A JP2001367173A JP2001367173A JP2003166555A JP 2003166555 A JP2003166555 A JP 2003166555A JP 2001367173 A JP2001367173 A JP 2001367173A JP 2001367173 A JP2001367173 A JP 2001367173A JP 2003166555 A JP2003166555 A JP 2003166555A
Authority
JP
Japan
Prior art keywords
input
torque
elastic
outer ring
clutch unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001367173A
Other languages
Japanese (ja)
Other versions
JP3977065B2 (en
Inventor
Masahiro Kurita
昌弘 栗田
Masahiro Kawai
正浩 川合
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2001367173A priority Critical patent/JP3977065B2/en
Publication of JP2003166555A publication Critical patent/JP2003166555A/en
Application granted granted Critical
Publication of JP3977065B2 publication Critical patent/JP3977065B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch unit capable of securely restoring operation members and input side members to the neutral position even in a condition that the installation space of springs is restricted. <P>SOLUTION: The clutch unit is constituted of an input side outer ring 1, an inner ring 2 from which a torque is outputted, a stationary member where rotation is stopped, and an engaging piece 3 rotating the inner ring 2 by the input torque from the outer ring 1. The inner ring 2 is intermittently rotated by the repeated rotation from the neutral position of the outer ring 1. The outer ring 1 of the clutch unit and stationary member are connected by the first elastic member 5A formed of a ring shaped leaf spring with ends. The elastic force is accumulated by the input torque and the outer ring 1 is restored to the neutral position when releasing the input torque by the accumulated elastic force. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、入力側の部材の入
力トルクを他部材に伝達するためのクラッチユニットに
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch unit for transmitting an input torque of an input side member to another member.

【0002】[0002]

【従来の技術】一般に、ローラやボール等の係合子を用
いるクラッチユニットにおいては、入力側の部材と出力
側の部材との間に形成される隙間にローラやボール等の
係合子を係合・離脱させることによって入力トルクの伝
達・遮断を制御する構成になっている。
2. Description of the Related Art Generally, in a clutch unit using an engaging element such as a roller or a ball, an engaging element such as a roller or a ball is engaged in a gap formed between an input side member and an output side member. It is configured to control transmission / interruption of the input torque by releasing the input torque.

【0003】[0003]

【発明が解決しようとする課題】上記クラッチユニット
の実際の機構として、操作レバー等の操作部材を繰り返
し回動操作することにより、入力側の部材を間欠的に回
転させて入力トルクを出力側の部材に伝達し、出力側の
部材に一操作ごとの回転量を重畳的に蓄積させるような
ものがある。
As an actual mechanism of the above-mentioned clutch unit, an input member is intermittently rotated by repeatedly rotating an operating member such as an operating lever to intermittently rotate an input member so that an input torque is output. There is one that transmits the rotation amount for each operation to the member on the output side in a superimposed manner.

【0004】このクラッチユニットでは、操作レバーを
一回操作する度に、出力側の部材の追従回転を規制しつ
つ、適当な復帰手段で操作レバーを中立位置に復帰させ
る必要がある。
In this clutch unit, each time the operating lever is operated, it is necessary to return the operating lever to the neutral position by appropriate returning means while restricting the follow-up rotation of the output side member.

【0005】この復帰手段としては、ばねの弾性力を利
用するものが考えられる。この場合、操作レバーを確実
に中立位置に復帰させるために、ばねには大きな弾性力
が必要とされるが、ばねの設置スペースが制限されてい
る等の条件下では、必要なばね定数を確保することが難
しく、それ故に操作レバーや入力側の部材の中立位置へ
の復帰が不十分となるおそれがある。
As this returning means, it is conceivable to use the elastic force of the spring. In this case, a large elastic force is required for the spring in order to reliably return the operating lever to the neutral position, but under the conditions where the spring installation space is limited, etc., the required spring constant is secured. It is difficult to do so, and therefore there is a risk that the return to the neutral position of the operating lever or the input side member will be insufficient.

【0006】そこで、本発明は、ばねの設置スペースが
制限されている条件下でも、操作部材や入力側の部材を
確実に中立位置に復帰させることのできるクラッチユニ
ットの提供を目的とする。
Therefore, an object of the present invention is to provide a clutch unit capable of reliably returning the operating member and the input side member to the neutral position even under the condition that the installation space of the spring is limited.

【0007】[0007]

【課題を解決するための手段】上記目的の達成のため、
本発明では、トルクが入力される入力側部材と、トルク
が出力される回転部材と、回転が拘束される静止側部材
と、入力側部材からの入力トルクで回転部材を回転させ
るトルク伝達部とを具備し、入力側部材の中立位置から
の繰り返し回転により、トルク伝達部を介して、回転部
材に入力側部材の各回転動作ごとの回転量を蓄積するク
ラッチユニットにおいて、入力側部材と静止側部材の間
に、入力トルクで弾性力を蓄積すると共に、この蓄積し
た弾性力で入力トルクの開放時に入力側部材を中立位置
(入力トルクが入力される前の位置)に復帰させる第一
の弾性部材を配置した。
[Means for Solving the Problems] To achieve the above object,
In the present invention, an input side member to which torque is input, a rotating member to which torque is output, a stationary side member to which rotation is restricted, and a torque transmission unit that rotates the rotating member by the input torque from the input side member. In the clutch unit that stores the rotation amount of each rotation operation of the input side member in the rotation member via the torque transmission unit by the repeated rotation from the neutral position of the input side member, the input side member and the stationary side The first elasticity that accumulates the elastic force between the members due to the input torque and that returns the input side member to the neutral position (the position before the input torque is input) when the input torque is released by the accumulated elastic force. The members are arranged.

【0008】このように入力側部材と静止側部材との間
に第一の弾性部材を配置することにより、入力側部材に
は、トルク開放時に第一の弾性部材から直接弾性力が作
用する。この弾性力は、入力側部材と回転部材の間のロ
ック/アンロックを行う機構とは無関係に入力側部材に
のみ作用するから、入力側部材に十分な復帰力を作用さ
せることができ、これより入力側部材を確実に中立位置
に復帰させることが可能となる。
By disposing the first elastic member between the input side member and the stationary side member in this manner, the elastic force is directly applied to the input side member from the first elastic member when the torque is released. Since this elastic force acts only on the input side member regardless of the mechanism for locking / unlocking between the input side member and the rotating member, a sufficient restoring force can be applied to the input side member. Therefore, the input side member can be reliably returned to the neutral position.

【0009】第一の弾性部材を有端リング状の板ばねで
形成すれば、コイルばね等の他の弾性部材を使用する場
合に比べ、構造の簡素化、省スペース化を図ることがで
きる。この場合、第一の弾性部材の一端を入力側部材
に、他端を静止側部材にそれぞれ係合させることによ
り、入力側部材の回転に伴って第一の弾性部材を弾性変
形させて弾性力を蓄積する一方、トルクの開放時は蓄積
した弾性力が直接入力側部材に伝達されるため、確実に
入力側部材を中立位置に復帰させることが可能となる。
If the first elastic member is formed of a leaf spring having an end ring shape, the structure can be simplified and the space can be saved as compared with the case where another elastic member such as a coil spring is used. In this case, one end of the first elastic member is engaged with the input-side member and the other end thereof is engaged with the stationary-side member, whereby the first elastic member is elastically deformed as the input-side member rotates, and elastic force is applied. On the other hand, when the torque is released, the accumulated elastic force is directly transmitted to the input side member, so that the input side member can be reliably returned to the neutral position.

【0010】トルク伝達部の構成は任意であるが、トル
ク伝達部として、入力側部材と回転部材の間の隙間に配
置され、トルク入力時に上記隙間に噛み込んで入力トル
クを回転部材に伝達し、入力トルクの開放時に上記隙間
への噛み込みを解除する係合子を使用すれば、構造的に
シンプルで低コストであり、かつ動作安定性や信頼性の
高いクラッチユニットを提供することが可能となる。
The configuration of the torque transmitting portion is arbitrary, but it is arranged in the gap between the input side member and the rotating member as the torque transmitting portion, and when the torque is input, it is bitten in the gap and transmits the input torque to the rotating member. By using an engaging element that releases the bite into the gap when the input torque is released, it is possible to provide a clutch unit that is structurally simple and low in cost, and that has high operational stability and reliability. Become.

【0011】この構成には、上記トルク伝達部としての
係合子を保持する保持器と、保持器と静止側部材との間
に配置した第二の弾性部材とを含めることもできる。こ
れにより、入力トルクの作用時には第一および第二の弾
性部材に弾性力を蓄積すると共に、入力トルクの開放時
に両弾性部材の弾性力で係合子の上記隙間への噛み込み
を解除することが可能となる。この場合、第一および第
二の弾性部材を有端リング状の板ばねで形成すれば、何
れか一方の弾性部材を他方の弾性部材の内径側に配置す
ることが可能となり、コンパクトな構造で上記機能を得
ることができる。
This structure may include a retainer that retains the engaging element serving as the torque transmitting portion, and a second elastic member disposed between the retainer and the stationary member. As a result, when the input torque is applied, the elastic force is accumulated in the first and second elastic members, and when the input torque is released, the elastic force of both elastic members can release the engagement of the engaging element with the gap. It will be possible. In this case, if the first and second elastic members are formed by end-shaped ring-shaped leaf springs, it is possible to arrange either one of the elastic members on the inner diameter side of the other elastic member, and with a compact structure. The above function can be obtained.

【0012】内径側の弾性部材のうち、トルク入力時の
弾性変形で外径側の弾性部材と干渉する部分には、当該
干渉を回避するための逃げ部を形成するのが好ましい。
内径側の弾性部材と外径側の弾性部材の干渉は機能の安
定上避けるべきであり、このような逃げ部を形成するこ
とにより、弾性部材間の半径方向隙間を拡大させること
なく、両部材の干渉を回避することができる。
Of the elastic member on the inner diameter side, it is preferable to form a relief portion at a portion which interferes with the elastic member on the outer diameter side due to elastic deformation at the time of torque input.
The interference between the elastic member on the inner diameter side and the elastic member on the outer diameter side should be avoided for the stability of the function, and by forming such a relief portion, the radial direction gap between the elastic members can be increased without expanding the both members. Interference can be avoided.

【0013】外径側の弾性部材の両端を外径側に、内径
側の弾性部材の両端を内径側にそれぞれ延ばせば、両弾
性部材の各端部と他方の弾性部材との干渉を回避でき
る。従って、内径側の弾性部材を外径側の弾性部材と同
程度まで大径化することが可能となり、内径側の弾性部
材についても十分な弾性力を確保することができる。
By extending both ends of the elastic member on the outer diameter side to the outer diameter side and extending both ends of the elastic member on the inner diameter side to the inner diameter side, interference between each end of both elastic members and the other elastic member can be avoided. . Therefore, it is possible to increase the diameter of the elastic member on the inner diameter side to the same extent as that of the elastic member on the outer diameter side, and it is possible to secure sufficient elastic force for the elastic member on the inner diameter side.

【0014】第一の弾性部材の一端を入力側部材に、他
端を静止側部材にそれぞれ係合させ、かつ第二の弾性部
材の一端を保持器に、他端を静止側部材にそれぞれ係合
させれば、トルク入力時には入力側部材および保持器の
回転で両弾性部材に弾性力を蓄積する一方、トルク開放
時には、主として第一の弾性部材の弾性力で外輪を中立
位置に復帰させ、第二の弾性部材の弾性力で保持器およ
び係合子を中立位置に復帰させることが可能となる。
One end of the first elastic member is engaged with the input side member, the other end is engaged with the stationary side member, and one end of the second elastic member is engaged with the retainer and the other end is engaged with the stationary side member. If they are combined, the elastic force is accumulated in both elastic members due to the rotation of the input side member and the cage during torque input, while at the time of torque release, the outer ring is returned to the neutral position mainly by the elastic force of the first elastic member, The elastic force of the second elastic member can return the retainer and the engaging element to the neutral position.

【0015】以上の各構成を有するクラッチユニット
と、トルクが出力される出力側部材と、上記クラッチユ
ニットの回転部材と出力側部材との間に配置され、入力
側部材の入力トルクを回転部材を介して出力側部材に伝
達し、出力側部材からの逆入力トルクの回転部材への伝
達を遮断する逆入力トルク遮断機構とを組み合わせるこ
とにより、入力側部材の繰り返し回転で出力側部材を間
欠回転させる一方、出力側部材からの逆入力トルクの入
力側への還流を遮断する回転駆動装置を提供することが
できる。この装置は、例えば、操作部材の回動操作によ
る入力トルクを出力側機構に伝達して所要部位の位置調
整を行う装置において、操作部材の非操作時、出力側機
構の位置が変動しないようこれを保持する機能が求めら
れる用途に好適である。
The clutch unit having each of the above-mentioned configurations, the output side member for outputting torque, and the rotary member of the clutch unit are arranged between the output side member and the output side member. The output side member is intermittently rotated by the repeated rotation of the input side member by combining with the reverse input torque cutoff mechanism that transmits the output side member to the output side member and cuts off the transmission of the reverse input torque from the output side member to the rotating member. On the other hand, it is possible to provide the rotation drive device that blocks the reverse input torque from the output member to the input side. This device is, for example, a device that transmits the input torque due to the rotating operation of the operating member to the output side mechanism to adjust the position of the required portion, so that the position of the output side mechanism does not change when the operating member is not operated. It is suitable for applications that require the function of holding

【0016】[0016]

【発明の実施の形態】以下、本発明に係るクラッチユニ
ットの一実施形態を図面に従って説明する。
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a clutch unit according to the present invention will be described below with reference to the drawings.

【0017】図1(a)(b)に示すように、この実施
形態のクラッチユニットは、入力側部材としての外輪1
と、回転部材としての内輪2と、トルク伝達部としての
係合子、例えば複数のローラ3と、ローラ3を保持する
保持器4と、二種類の弾性部材5A,5Bとを有する。
As shown in FIGS. 1A and 1B, the clutch unit of this embodiment has an outer ring 1 as an input side member.
An inner ring 2 as a rotating member, an engaging element as a torque transmitting portion, for example, a plurality of rollers 3, a retainer 4 for holding the rollers 3, and two types of elastic members 5A and 5B.

【0018】外輪1は、第1薄肉部材1Aと、第2薄肉
部材1Bとから構成される。本実施形態において、第2
薄肉部材1Bの端部内周1Beは、第1薄肉部材1Aの
外周、より詳細には内径フランジ部1Acの外周に配置
されており、両部材1A,1Bの端面1Ag,1Bgは
半径方向で同一平面上にある。両薄肉部材1A,1B
は、鋼板をプレス加工することにより製作することがで
きるが、その他にも例えば、第2薄肉部材1Bを樹脂等
の成型品で構成することもできる。
The outer ring 1 is composed of a first thin member 1A and a second thin member 1B. In the present embodiment, the second
The end inner circumference 1Be of the thin member 1B is arranged on the outer circumference of the first thin member 1A, more specifically, on the outer circumference of the inner diameter flange portion 1Ac, and the end surfaces 1Ag, 1Bg of both members 1A, 1B are flush with each other in the radial direction. It is above. Both thin-walled members 1A, 1B
Can be manufactured by pressing a steel plate, but in addition to this, for example, the second thin member 1B can be made of a molded product such as a resin.

【0019】第1薄肉部材1Aは、内周に複数のカム面
1Aaが円周方向等間隔に形成されたドラム部1Ab
と、ドラム部1Abの一端部より内径側に延出された内
径フランジ部1Acと、ドラム部1Abの他端部より外
径側に延出された外径フランジ部1Adとを備える。
The first thin member 1A has a drum portion 1Ab having a plurality of cam surfaces 1Aa formed on the inner circumference thereof at equal intervals in the circumferential direction.
And an inner diameter flange portion 1Ac extending from one end of the drum portion 1Ab to the inner diameter side, and an outer diameter flange portion 1Ad extending to the outer diameter side from the other end of the drum portion 1Ab.

【0020】各カム面1Aaは、円周方向中央部が深
く、その中央部から円周方向両側に向って傾斜状に浅く
なっている。内径フランジ部1Acは、保持器4を軸方
向の一方に抜け止め規制すると共に、外輪1の内輪2に
対する同軸性を保持する役割を果たすものである。
Each cam surface 1Aa is deep in the central portion in the circumferential direction, and is shallow in an inclined shape from the central portion toward both sides in the circumferential direction. The inner diameter flange portion 1Ac serves to prevent the retainer 4 from slipping out in one axial direction and to maintain the coaxiality of the outer ring 1 with respect to the inner ring 2.

【0021】外径フランジ部1Adには、第2薄肉部材
1Bとの結合に供せられる複数(図例では6つ)の嵌合
溝1Aeが形成されると共に、外径端より軸方向に沿っ
てドラム部1Abと反対側に延出された1または複数の
ストッパ爪1Afが形成されている。このストッパ爪1
Afが、第1薄肉部材1Aの一側方(図1(a)の右側
方)にあって回転が拘束される静止側部材の図示しない
ストッパ部と回転方向に係合することにより、外輪1の
回動が所定範囲に規制される。
The outer diameter flange portion 1Ad is formed with a plurality of (six in the illustrated example) fitting grooves 1Ae used for coupling with the second thin wall member 1B, and extends from the outer diameter end in the axial direction. One or a plurality of stopper claws 1Af are formed on the opposite side of the drum portion 1Ab. This stopper claw 1
When Af engages with a stopper portion (not shown) of a stationary member, which is located on one side of the first thin member 1A (on the right side of FIG. 1A) and whose rotation is restricted, in a rotating direction, Af Is restricted within a predetermined range.

【0022】第1薄肉部材1Aの全部又はカム面1Aa
に対しては、例えば、浸炭焼入れ焼戻し、浸炭窒化焼入
れ焼戻し、高周波焼入れ焼戻し、ずぶ焼入れ焼戻し等の
熱処理(表面硬化処理)が施される。
All of the first thin member 1A or the cam surface 1Aa
For example, heat treatment (surface hardening treatment) such as carburizing and tempering, carbonitriding and quenching tempering, induction hardening and soaking quenching and tempering is performed.

【0023】第2薄肉部材1Bには、外径端より軸方向
に沿って第1薄肉部材1A側に延出された複数(図例で
は6つ)の嵌合爪1Baが形成されており、これらの嵌
合爪1Baが図1(a)(b)に示すように第1薄肉部
材1Aの嵌合溝1Aeに嵌合圧入または加締め固定され
ることにより、両薄肉部材1A,1Bの相対回転及び軸
方向相対移動が規制されている。そして、この状態の下
で、嵌合爪1Baが、その外周に装着される操作部材と
しての操作レバー6の凹凸部と回転方向に係合すること
により、操作レバー6の外輪1に対する相対回転が規制
されるようになっている。従って、操作レバー6を回動
操作することにより、第1薄肉部材1Aと第2薄肉部材
1Bとが一体回転し、これにより操作レバー6からの入
力トルクが外輪1に入力される。
The second thin member 1B is formed with a plurality of fitting claws 1Ba (six in the illustrated example) extending from the outer diameter end toward the first thin member 1A side along the axial direction. As shown in FIGS. 1 (a) and 1 (b), these fitting claws 1Ba are fitted into the fitting groove 1Ae of the first thin member 1A by fitting press fitting or caulking and fixing, so that the thin members 1A and 1B are relatively opposed to each other. Rotation and relative movement in the axial direction are restricted. Then, under this state, the fitting claw 1Ba engages with the uneven portion of the operation lever 6 as an operation member mounted on the outer periphery thereof in the rotation direction, whereby the relative rotation of the operation lever 6 with respect to the outer ring 1 is achieved. It is becoming regulated. Therefore, when the operation lever 6 is rotated, the first thin member 1A and the second thin member 1B are integrally rotated, whereby the input torque from the operation lever 6 is input to the outer ring 1.

【0024】図示例の内輪2は円筒状をなし、外周に外
輪1(第1薄肉部材1A)のカム面1Aaとの間に楔隙
間を形成する円周面2aを備えている。
The inner ring 2 in the illustrated example has a cylindrical shape, and has an outer peripheral surface 2a forming a wedge gap with the cam surface 1Aa of the outer ring 1 (first thin member 1A).

【0025】保持器4は円筒状をなし、図2に示すよう
に、ローラ3を収容する複数(例えば10個)の窓形の
ポケット4aと、円周方向に離隔した一対の切欠き部4
bを備える。両切欠き部4bには後述する第二の弾性部
材5Bの係合部5B1,5B2がそれぞれ挿入される
(図3参照)。保持器4の材質は特に問わないが、この
実施形態では、保持器4を合成樹脂材料、例えばポリア
ミド66(PA66)にグラスファイバーを25重量%
配合した合成樹脂材料の射出成形品としている。
The retainer 4 has a cylindrical shape, and as shown in FIG. 2, a plurality (for example, 10) of window-shaped pockets 4a for accommodating the rollers 3 and a pair of notches 4 which are circumferentially separated from each other.
b. Engagement portions 5B1 and 5B2 of a second elastic member 5B, which will be described later, are inserted into both the cutout portions 4b (see FIG. 3). The material of the cage 4 is not particularly limited, but in this embodiment, the cage 4 is made of a synthetic resin material such as polyamide 66 (PA66) and 25% by weight of glass fiber.
It is an injection molded product of the compounded synthetic resin material.

【0026】弾性部材5A,5Bは、図1(b)および
図3に示すように、何れも帯板材(例えばステンレス鋼
等の金属製とする)を丸めて形成した有端リング状の板
ばねで形成することができる。一方の弾性部材5Bは他
方の弾性部材5Aの内径側に配置されている。
As shown in FIGS. 1 (b) and 3, the elastic members 5A and 5B are both end-ring-shaped leaf springs formed by rolling a strip plate material (for example, made of metal such as stainless steel). Can be formed with. One elastic member 5B is arranged on the inner diameter side of the other elastic member 5A.

【0027】図3に示すように、外径側の第一の弾性部
材5Aの両端部には、外径側に屈曲させた係合部5A
1,5A2が形成される。この係合部5A1,5A2
は、入力トルクの作用時および開放時において、一方が
外輪1と係合し、他方が上記静止側部材(図示省略)と
係合する。具体的には、図示のように外輪1に係止部1
aを形成すると共に、静止側部材7に係止部7aを形成
し、さらに図示のように外輪1が中立状態にある時に係
止部1a,7aの円周方向の位相を一致させ、この係止
部1a,7aの円周方向両側に両係合部5A1,5A2
を弾性的に当接させる。これにより、外輪1が正逆何れ
の方向に回転した場合でも、一方の係合部が外輪1に、
他方の係合部が静止側部材7にそれぞれ係合するので、
外輪1の回転に伴って係合部5A1,5A2間の円周方
向の間隔を押し広げ、第一の弾性部材5Aに弾性力を蓄
積することができる。外輪1に作用する回動力(入力ト
ルク)が解除されると、第一の弾性部材5Aの弾性力に
より、外輪1が中立状態に復帰する。
As shown in FIG. 3, at both ends of the first elastic member 5A on the outer diameter side, engaging portions 5A bent to the outer diameter side are provided.
1,5A2 are formed. The engaging portions 5A1 and 5A2
When the input torque acts and is released, one engages with the outer ring 1 and the other engages with the stationary member (not shown). Specifically, as shown in the drawing, the locking portion 1 is attached to the outer ring 1.
In addition to forming a, the stationary side member 7 is formed with a locking portion 7a, and when the outer ring 1 is in a neutral state as shown in the drawing, the phases of the locking portions 1a and 7a in the circumferential direction are made to coincide with each other. Both engaging portions 5A1 and 5A2 are provided on both sides in the circumferential direction of the stopper portions 1a and 7a.
Elastically abut. As a result, when the outer ring 1 rotates in either the normal or reverse direction, one of the engaging portions is attached to the outer ring 1,
Since the other engaging portion engages with the stationary member 7 respectively,
As the outer ring 1 rotates, the circumferential distance between the engaging portions 5A1 and 5A2 can be widened, and elastic force can be accumulated in the first elastic member 5A. When the rotational force (input torque) acting on the outer ring 1 is released, the outer ring 1 returns to the neutral state by the elastic force of the first elastic member 5A.

【0028】内径側の第二の弾性部材5Bの両端部に
は、内径側に屈曲させた係合部5B1,5B2が形成さ
れる。この係合部5B1,5B2は、第一の弾性部材5
Aの係合部5A1,5A2に対して円周方向の位相をず
らせて(例えば90°程度の位相差を持たせて)配置す
るのが望ましい。両係合部5B1,5B2は、それぞれ
保持器4の切欠き部4bに挿入される。保持器4が中立
状態にある時、両係合部5B1,5B2は、それぞれ切
欠き部4bの側面4b1,4b2(円周方向で対向する
側面)とそれぞれ弾性的に係合し、かつ静止側部材に形
成された係止部7bとそれぞれ弾性的に係合している。
この状態から、保持器4が正逆何れの方向に回転した場
合でも、第二の弾性部材5Bの一方の係合部が保持器4
に、他方の係合部が静止側部材7にそれぞれ係合するた
め、保持器4の回転に伴って係合部5B1,5B2間の
円周方向の間隔が押し広げられ、第二の弾性部材5Bに
弾性力が蓄積される。保持器4に作用する回動力が解除
されると、第二の弾性部材5の弾性力によって、保持器
4が復帰力を受けて中立状態に復帰する。
Engagement portions 5B1 and 5B2 bent toward the inner diameter side are formed at both ends of the second elastic member 5B on the inner diameter side. The engaging portions 5B1 and 5B2 are the first elastic member 5
It is desirable that the engagement portions 5A1 and 5A2 of A are arranged with a phase shift in the circumferential direction (for example, with a phase difference of about 90 °). Both the engaging portions 5B1 and 5B2 are inserted into the cutout portions 4b of the cage 4, respectively. When the cage 4 is in the neutral state, the engaging portions 5B1 and 5B2 are elastically engaged with the side surfaces 4b1 and 4b2 (side surfaces facing each other in the circumferential direction) of the cutout portion 4b, respectively, and are also on the stationary side. The engaging portions 7b formed on the member are elastically engaged with each other.
From this state, no matter whether the cage 4 rotates in the normal or reverse direction, one of the engaging portions of the second elastic member 5B will cause the cage 4 to rotate.
In addition, since the other engaging portion engages with the stationary side member 7, the circumferential interval between the engaging portions 5B1 and 5B2 is widened as the retainer 4 rotates, and the second elastic member Elastic force is accumulated in 5B. When the rotational force acting on the cage 4 is released, the cage 4 is returned to the neutral state by the restoring force of the elastic force of the second elastic member 5.

【0029】第二の弾性部材5Bの係合部5B1,5B
2が押し広げられた場合、係合部5B1,5B2の近傍
では弾性部材5Bの変形量が大きくなるため、この変形
部が外径側の第一の弾性部材5Aと干渉するおそれがあ
る。これを回避するため、図3に示すように、第二の弾
性部材5Bのうち、係合部5B1,5B2の近傍には、
例えば図示のように円弧に対して弦を描くような直線状
とした逃げ部5B3を形成するのが望ましい。
Engaging portions 5B1 and 5B of the second elastic member 5B
When 2 is expanded, the amount of deformation of the elastic member 5B becomes large in the vicinity of the engaging portions 5B1 and 5B2, so that this deforming portion may interfere with the first elastic member 5A on the outer diameter side. In order to avoid this, as shown in FIG. 3, in the second elastic member 5B, in the vicinity of the engaging portions 5B1 and 5B2,
For example, it is desirable to form a linear escape portion 5B3 that draws a chord with respect to an arc as shown.

【0030】以上の組付けにより、図4に示すように、
外輪1および保持器4が弾性部材5A,5Bを介して静
止側部材7とそれぞれ連結される。
With the above assembly, as shown in FIG.
The outer ring 1 and the cage 4 are connected to the stationary member 7 via elastic members 5A and 5B, respectively.

【0031】次に、図4〜図6を参照しながら、この実
施形態のクラッチユニットの動作について説明する。な
お、図4〜図6において、第一および第二の弾性部材5
A,5B、並びに静止側部材7は模式化され、概念的に
示されている。また、操作レバー6も記載が省略されて
いる。図面では、第一の弾性部材5Aに比べて第二の弾
性部材5Bを大きく描いているが、これは図面作成上の
都合によるもので、弾性力の強弱等のばね特性とは無関
係である。
Next, the operation of the clutch unit of this embodiment will be described with reference to FIGS. 4 to 6, the first and second elastic members 5 are
A, 5B, and the stationary member 7 are schematically illustrated and are shown conceptually. The operation lever 6 is also omitted. In the drawing, the second elastic member 5B is drawn larger than the first elastic member 5A, but this is for the convenience of drawing creation and is not related to the spring characteristics such as the strength of the elastic force.

【0032】図4は、クラッチユニットの中立状態を示
している。この中立状態において、ローラ3はカム面1
Aaの中央部に位置し、カム面1Aaと円周面2aとの
間に形成される正逆両方向の楔隙間からそれぞれ離脱す
る。ローラ3の直径は、カム面1Aaの中央部と円周面
2aとの間の半径方向距離よりも若干小さく設定されて
おり、ローラ3とカム面1Aaの中央部および円周面2
aとの間には半径方向隙間がある。
FIG. 4 shows the neutral state of the clutch unit. In this neutral state, the roller 3 has the cam surface 1
It is located in the center of Aa and separates from the wedge gaps formed in the forward and reverse directions between the cam surface 1Aa and the circumferential surface 2a. The diameter of the roller 3 is set to be slightly smaller than the radial distance between the central portion of the cam surface 1Aa and the circumferential surface 2a, and the central portion of the roller 3 and the cam surface 1Aa and the circumferential surface 2 are set.
There is a radial gap with a.

【0033】図5は、操作レバー6を回動操作して、外
輪1に入力トルクを入力した時の状態を示している。例
えば、同図において、外輪1に反時計方向の入力トルク
が入力されると、外輪1の回動に伴い、カム面1Aaが
ローラ3に対して反時計方向に相対移動して、ローラ3
が楔隙間に係合する(噛み込む)。保持器4は、第二の
弾性部材5Bにより静止側部材7と共に静止しようとす
るので、上記外輪1の相対移動が可能となる。これによ
り、外輪1と内輪2がロックされるので、外輪1からの
入力トルクがローラ3を介して内輪2に伝達され、外輪
1、ローラ3、保持器4、および内輪2が一体となって
反時計方向に回動する。なお、この回動の最大量は、静
止側部材7のストッパ部と外輪1のストッパ爪1Afと
の当接によって規制される。そして、上述のように外輪
1および保持器4の回動に伴って両弾性部材5A,5B
が撓み、その撓み量に応じた弾性力がそれぞれに蓄積さ
れる。
FIG. 5 shows a state in which the operating lever 6 is turned to input an input torque to the outer ring 1. For example, in the figure, when the counterclockwise input torque is input to the outer ring 1, the cam surface 1Aa moves counterclockwise relative to the roller 3 as the outer ring 1 rotates, and the roller 3 moves.
Engages (bites into) the wedge gap. Since the retainer 4 tries to stand still together with the stationary side member 7 by the second elastic member 5B, the outer ring 1 can be relatively moved. As a result, the outer ring 1 and the inner ring 2 are locked, so that the input torque from the outer ring 1 is transmitted to the inner ring 2 via the roller 3, and the outer ring 1, the roller 3, the cage 4, and the inner ring 2 are integrated. Rotate counterclockwise. The maximum amount of this rotation is restricted by the contact between the stopper portion of the stationary member 7 and the stopper claw 1Af of the outer ring 1. Then, as described above, the elastic members 5A and 5B are rotated along with the rotation of the outer ring 1 and the cage 4.
Bends, and the elastic force corresponding to the amount of the bend is accumulated in each.

【0034】図6は、操作レバー6(外輪1)を開放し
た時の状態を示している。この場合、第一の弾性部材5
Aに蓄積された弾性力によって外輪1に時計方向の弾性
力が働き、外輪1が時計方向に回転して図4に示す中立
位置に復帰する。同時に第二の弾性部材5Bに蓄積され
た弾性力によって、保持器4に時計方向の回動力が働
き、ローラ3が保持器4に押されて保持器4と共に中立
位置に復帰する。この際、ローラ3がカム面1Aaを押
圧するため、外輪1は第一の弾性部材5Aの弾性力のみ
ならず、第二の弾性部材5Bからの弾性力fによっても
中立位置に復帰する。一方、内輪2は、図5の回動操作
によって与えられた回動位置をそのまま維持する。従っ
て、操作レバー6の回動操作を繰り返し行った場合で
は、内輪2に各回動操作ごとの回動量が重畳的に蓄積さ
れる。以上から、このクラッチユニットは、例えば操作
レバー6の回動操作による入力トルクを出力側機構に伝
達し、所要部位の位置調整を行うような用途に好適であ
る。
FIG. 6 shows a state in which the operation lever 6 (outer ring 1) is opened. In this case, the first elastic member 5
A clockwise elastic force acts on the outer ring 1 by the elastic force accumulated in A, and the outer ring 1 rotates clockwise and returns to the neutral position shown in FIG. At the same time, due to the elastic force accumulated in the second elastic member 5B, a clockwise turning force acts on the retainer 4, the roller 3 is pushed by the retainer 4 and returns to the neutral position together with the retainer 4. At this time, since the roller 3 presses the cam surface 1Aa, the outer ring 1 returns to the neutral position not only by the elastic force of the first elastic member 5A but also by the elastic force f from the second elastic member 5B. On the other hand, the inner ring 2 maintains the turning position given by the turning operation of FIG. 5 as it is. Therefore, when the turning operation of the operation lever 6 is repeatedly performed, the turning amount for each turning operation is accumulated in the inner ring 2 in a superimposed manner. From the above, this clutch unit is suitable for use, for example, for transmitting the input torque due to the turning operation of the operation lever 6 to the output side mechanism and adjusting the position of the required portion.

【0035】なお、図4〜図6において、外輪1に時計
方向の入力トルクが入力された場合も、上記と同様の動
作を行う(動作の向きは逆)。また、内輪側から入力ト
ルクを入力する構成とすることもでき、その場合、内輪
の外周にカム面を設け、外輪の内周に円周面を設ける。
4 to 6, when the clockwise input torque is input to the outer ring 1, the same operation as described above is performed (the operation direction is opposite). Alternatively, the input torque may be input from the inner ring side, in which case the cam surface is provided on the outer circumference of the inner ring and the circumferential surface is provided on the inner circumference of the outer ring.

【0036】ところで、上述のように入力トルクの開放
時には、外輪1には第一の弾性部材5Aのみならず、第
二の弾性部材5Bからも復帰方向の弾性力が作用する。
従って、原理的には第二の弾性部材5Bからの弾性力の
みをもって外輪1の復帰動作を行うことも可能である。
すなわち、図3において、第一の弾性部材5A、および
これと係合する係止部1a,7aを省略した構成でも、
外輪1の中立位置への復帰を行い得ると考えられる。
By the way, as described above, when the input torque is released, not only the first elastic member 5A but also the second elastic member 5B exerts a restoring elastic force on the outer ring 1.
Therefore, in principle, it is also possible to perform the returning operation of the outer ring 1 only by the elastic force from the second elastic member 5B.
That is, in FIG. 3, even if the first elastic member 5A and the locking portions 1a and 7a engaging with the first elastic member 5A are omitted,
It is considered that the outer ring 1 can be returned to the neutral position.

【0037】しかしながら、この構造では、入力トルク
の開放時における外輪1の復帰力が不足し、外輪1が完
全に中立位置に復帰できない事態が起こり得る。すなわ
ち、外輪1の復帰力を大きくするためには、図7に示す
ように、弾性部材5Bの弾性力Fが保持器4→ローラ3
→外輪1の経路のみに作用するのが理想的であるが、本
発明者らの検討によれば、実際には弾性力Fの多くは内
輪2とローラ3の間の摩擦損失μF’で失われることが
判明した。具体的には、μ×F/tan2αの力がロス
となり、外輪1には、F(1−μ×F/tan2α)の
力のみが復帰力として作用するのである(μは内輪2と
ローラ3の摩擦係数、αはストラト角である)。通常の
クラッチユニットにおいては、αの値は4°程度である
から、μを0.1と仮定すると有効な復帰力は弾性力F
の30%程度となり、復帰力不足が懸念される。十分な
復帰力を確保するには、弾性部材5Bの弾性力Fを大き
くすれば良いのであるが、弾性部材5Bの設置スペース
の拡大が難しいこと、および弾性部材5Bの許容応力を
考慮する必要があることから、弾性部材5Bの大型化や
厚肉化だけでは復帰力不足の対策としても不十分であ
る。
However, in this structure, the restoring force of the outer ring 1 when the input torque is released may be insufficient and the outer ring 1 may not be completely returned to the neutral position. That is, in order to increase the restoring force of the outer ring 1, as shown in FIG. 7, the elastic force F of the elastic member 5B is changed to the cage 4 → the roller 3
→ Ideally, it acts only on the path of the outer ring 1, but according to the study by the present inventors, most of the elastic force F is actually lost due to the friction loss μF ′ between the inner ring 2 and the roller 3. It turned out to be Specifically, the force of μ × F / tan2α becomes a loss, and only the force of F (1−μ × F / tan2α) acts on the outer ring 1 as a restoring force (μ is the inner ring 2 and the roller 3). Friction coefficient, α is the Strat angle). In a normal clutch unit, the value of α is about 4 °, so assuming that μ is 0.1, the effective restoring force is the elastic force F.
It is about 30% of the above, and there is a concern that the return force may be insufficient. In order to secure a sufficient restoring force, the elastic force F of the elastic member 5B may be increased, but it is difficult to expand the installation space of the elastic member 5B and it is necessary to consider the allowable stress of the elastic member 5B. For this reason, simply increasing the size and increasing the thickness of the elastic member 5B is not sufficient as a measure against the insufficient restoring force.

【0038】これに対し、上述のように外輪1と静止側
部材7との間に第一の弾性部材5Aを配置し、この弾性
部材5Aの弾性力で外輪1を直接復帰させる構造、すな
わち弾性部材を、外輪1の復帰専用となる第一の弾性部
材5Aと、外輪1と内輪2の間のロック/アンロック状
態の切替え専用となる第二の弾性部材5Bとに分離した
構造とすることにより、外輪1の復帰動作を確実に行
い、クラッチユニットの作動安定性を高めることが可能
となる。
On the other hand, as described above, the first elastic member 5A is arranged between the outer ring 1 and the stationary member 7, and the outer ring 1 is directly returned by the elastic force of the elastic member 5A. The member is divided into a first elastic member 5A dedicated to returning the outer ring 1 and a second elastic member 5B dedicated to switching between a locked / unlocked state between the outer ring 1 and the inner ring 2. As a result, it is possible to reliably perform the returning operation of the outer wheel 1 and enhance the operational stability of the clutch unit.

【0039】以上の効果を確認するため、図4に図示す
るクラッチユニット(本発明品)と図7に図示するクラ
ッチユニット(比較品)とについて、操作レバー6の2
5°開き時とスタンバイ時のそれぞれについて外輪1の
復帰力を計測した。従来品では、25°開き時で44.
1〜53.9[×10-2N・m](以下、単位は同
じ)、スタンバイ時で24.5〜29.4の復帰力であ
るのに対し、本発明品では、25°開き時で117.6
〜127.4、スタンバイ時で58.8〜69.6の復
帰力が得られ、何れの場合でも比較品に比べ2倍程度の
大きな外輪復帰力を得られることが明らかになった。
In order to confirm the above effects, the operation lever 6 of the clutch unit (invention product) shown in FIG. 4 and the clutch unit (comparative product) shown in FIG.
The restoring force of the outer ring 1 was measured for each of the 5 ° open state and the standby state. With the conventional product, 44.
1 to 53.9 [× 10 -2 N · m] (hereinafter, the unit is the same), while the standby force is 24.5 to 29.4, the product of the present invention is open at 25 °. At 117.6
.About.127.4, and a restoring force of 58.8 to 69.6 was obtained at the time of standby, and in any case, it was revealed that a large restoring force of the outer ring, which is about twice as large as that of the comparative product, can be obtained.

【0040】上記クラッチユニットは、種々の装置の動
力伝達部に組み込むことができる。以下の説明では、一
例として上記クラッチユニットを使用した回転駆動装置
の一実施形態を説明する。
The clutch unit can be incorporated in the power transmission section of various devices. In the following description, an embodiment of a rotary drive device using the clutch unit will be described as an example.

【0041】図8に示すように、この回転駆動装置は、
入力側部材としての外輪1と、出力側部材としての出力
軸12と、回転部材としての内輪13と、静止側部材と
しての外輪14と、入力側に設けられた第一クラッチ部
15と、出力側に設けられた逆入力遮断機構としての第
2クラッチ部16とを主要な要素として構成される。
As shown in FIG. 8, this rotary drive device is
An outer ring 1 as an input side member, an output shaft 12 as an output side member, an inner ring 13 as a rotating member, an outer ring 14 as a stationary side member, a first clutch portion 15 provided on the input side, and an output. The second clutch portion 16 as a reverse input cutoff mechanism provided on the side is configured as a main element.

【0042】入力側部材としての外輪1は、図1に示す
クラッチユニットの外輪と同様に、第1薄肉部材1Aと
第2薄肉部材1Bとで構成される。外輪1には操作レバ
ー23が結合され(図14参照)、操作レバー23から
外輪1に正方向又は逆方向の入力トルクが入力される。
なお、この実施形態では、ワッシャ28と第1薄肉部材
1Aの端面1Agとの間に、波型ばねや皿ばねからなる
弾性体29を介在させることにより、外輪1に軸方向の
予圧を付与する構成を付加している。
The outer ring 1 as the input side member is composed of a first thin member 1A and a second thin member 1B, like the outer ring of the clutch unit shown in FIG. An operation lever 23 is coupled to the outer wheel 1 (see FIG. 14), and a forward or reverse input torque is input from the operation lever 23 to the outer wheel 1.
In this embodiment, an elastic body 29 made of a corrugated spring or a disc spring is interposed between the washer 28 and the end surface 1Ag of the first thin member 1A to apply an axial preload to the outer ring 1. The configuration is added.

【0043】図9は、出力側部材としての出力軸12を
示している。出力軸12は、一端側にジャーナル部12
a、中央側に大径部12b、他端側に連結部12cを備
えている。ジャーナル部12aは、後述する内輪(1
3:図10参照)のラジアル軸受面13a1に挿入され
る。大径部12bの外周には、複数(例えば8つ)のカ
ム面12b1が円周方向に等間隔で形成される。各カム
面12b1は、出力軸12の軸心を中心とする円に対し
て弦をなす平坦面状に形成される。また、大径部12b
の一端側部分には軸方向の複数(例えば8つ)のピン孔
12b3が円周所定間隔に形成される。これらピン孔1
2b3には内輪13のピン13b1が挿入される。ま
た、大径部12bの他端側部分には環状凹部12b4が
形成される。この環状凹部12b4には後述する摩擦部
材(19:図13参照)が圧入され、また、環状凹部1
2b4の内周壁12b5は、後述する固定側板(17:
図12参照)のラジアル軸受面17e2に挿入されるジ
ャーナル面になる。連結部12cには、他の回動部材を
連結するための歯型12c1が形成される。
FIG. 9 shows the output shaft 12 as an output side member. The output shaft 12 has a journal portion 12 on one end side.
a, a large diameter portion 12b is provided on the center side, and a connecting portion 12c is provided on the other end side. The journal portion 12a has an inner ring (1
3: (see FIG. 10), which is inserted into the radial bearing surface 13a1. On the outer circumference of the large diameter portion 12b, a plurality (for example, eight) of cam surfaces 12b1 are formed at equal intervals in the circumferential direction. Each cam surface 12b1 is formed in a flat surface shape forming a chord with respect to a circle centered on the axis of the output shaft 12. Also, the large diameter portion 12b
A plurality of (e.g., eight) pin holes 12b3 in the axial direction are formed at a portion on one end side thereof at predetermined circumferential intervals. These pin holes 1
The pin 13b1 of the inner ring 13 is inserted into 2b3. An annular recess 12b4 is formed at the other end of the large diameter portion 12b. A friction member (19: see FIG. 13) described later is press-fitted into the annular recess 12b4.
The inner peripheral wall 12b5 of 2b4 has a fixed side plate (17:
It becomes a journal surface to be inserted into the radial bearing surface 17e2 (see FIG. 12). A tooth mold 12c1 for connecting another rotating member is formed in the connecting portion 12c.

【0044】出力軸12は、例えば、肌焼鋼、機械構造
用炭素鋼、軸受鋼等の鋼材から鍛造加工によって成形さ
れ、浸炭焼入れ焼戻し、浸炭窒化焼入れ焼戻し、高周波
焼入れ焼戻し、ずぶ焼入れ焼戻し等の適宜の熱処理が施
される。この実施形態では、出力軸12を形成する鋼材
として肌焼鋼(例えばクロムモリブデン鋼SCM42
0)を使用し、これに熱処理として浸炭焼入れ焼戻しを
行って、表層部の表面硬さを57〜62HRCに調整し
ている。なお、出力軸12は、鋼材の削出し品とするこ
ともできる。
The output shaft 12 is formed by forging from a steel material such as case-hardened steel, carbon steel for machine structure, bearing steel, etc., and is subjected to carburizing and quenching tempering, carbonitriding and quenching tempering, induction hardening and soaking quenching and tempering. Appropriate heat treatment is performed. In this embodiment, case hardening steel (for example, chrome molybdenum steel SCM42) is used as the steel material forming the output shaft 12.
0) is used and is subjected to carburizing quenching and tempering as a heat treatment to adjust the surface hardness of the surface layer portion to 57 to 62 HRC. The output shaft 12 may be a machined steel product.

【0045】図10は、回転部材としての内輪13を示
している。内輪13は、筒状部13aと、筒状部13a
の一端から外径側に延びたフランジ部13bと、フラン
ジ部13bの外径端から軸方向の一方に延びた複数(例
えば8本)の柱部13cとを主体として構成される。筒
状部13aは、出力軸12のジャーナル部12aに外挿
され、かつ、外輪1の内部に内挿される。筒状部13a
の他端側部分の内周には、出力軸12のジャーナル部1
2aをラジアル方向に支持するラジアル軸受面13a1
が形成され、筒状部13aの他端側部分の外周には、外
輪1のカム面1Aaとの間に正逆両回転方向に楔隙間を
形成する円周面13a2が形成される。フランジ部13
bには、軸方向の一方に突出した複数(例えば8つ)の
ピン13b1が円周方向に所定間隔で形成される。これ
らピン13b1は、出力軸12のピン孔12b3にそれ
ぞれ挿入される。また、円周方向に隣接した柱部13c
間には、軸方向の一方に向かって開口したポケット13
c1が形成され、これらポケット13c1に後述する第
2クラッチ部(16:図15参照)のローラ30と板ば
ね31が収容される。ローラ30と板ばね31を、ポケ
ット13c1の軸方向の開口部から該ポケット13c1
内に組み入れることができるので、組立作業が容易であ
る。
FIG. 10 shows the inner ring 13 as a rotating member. The inner ring 13 includes a tubular portion 13a and a tubular portion 13a.
Mainly includes a flange portion 13b extending from one end to the outer diameter side and a plurality of (for example, eight) column portions 13c extending from the outer diameter end of the flange portion 13b to one side in the axial direction. The tubular portion 13 a is externally inserted into the journal portion 12 a of the output shaft 12 and also inside the outer ring 1. Tubular part 13a
The journal portion 1 of the output shaft 12 is provided on the inner periphery of the other end side portion of the
Radial bearing surface 13a1 for supporting 2a in the radial direction
The outer peripheral surface of the other end portion of the tubular portion 13a is formed with a circumferential surface 13a2 that forms a wedge gap between the cam surface 1Aa of the outer ring 1 in both forward and reverse rotation directions. Flange part 13
A plurality of (e.g., eight) pins 13b1 protruding in one axial direction are formed in b at predetermined intervals in the circumferential direction. These pins 13b1 are inserted into the pin holes 12b3 of the output shaft 12, respectively. Also, the column portions 13c adjacent to each other in the circumferential direction
In between, there is a pocket 13 opening toward one side in the axial direction.
c1 is formed, and the roller 30 and the leaf spring 31 of the second clutch portion (16: see FIG. 15) described later are housed in these pockets 13c1. Insert the roller 30 and the leaf spring 31 from the axial opening of the pocket 13c1 to the pocket 13c1.
Since it can be incorporated inside, the assembly work is easy.

【0046】内輪13は、例えば、肌焼鋼、機械構造用
炭素鋼、軸受鋼等の鋼材から鍛造加工によって成形さ
れ、浸炭焼入れ焼戻し、浸炭窒化焼入れ焼戻し、高周波
焼入れ焼戻し、ずぶ焼入れ焼戻し等の適宜の熱処理が施
される。この実施形態では、内輪13を形成する鋼材と
して肌焼鋼(例えばクロムモリブデン鋼SCM420)
を使用し、これに熱処理として浸炭焼入れ焼戻しを行っ
て、表層部の表面硬さを57〜62HRCに調整してい
る。なお、内輪13は、鋼材の削出し品、鋼鈑(例えば
冷間圧延鋼鈑)のプレス成形品とすることもできる。
The inner ring 13 is formed by forging from a steel material such as case-hardened steel, carbon steel for machine structure, bearing steel, etc., and is appropriately carburized and tempered, carbonitrided and tempered, induction hardened and soaked and tempered. Is heat treated. In this embodiment, case hardening steel (for example, chrome molybdenum steel SCM420) is used as the steel material forming the inner ring 13.
Is used as the heat treatment, and the surface hardness of the surface layer portion is adjusted to 57 to 62 HRC. The inner ring 13 may be a machined steel product or a press-formed product of a steel plate (for example, cold rolled steel plate).

【0047】図11は、静止側部材としての外輪14を
示している。外輪14は、半径方向内径側に延びたフラ
ンジ部14aと、フランジ部14aの外径端から軸方向
の一方に延びた筒状部14cと、筒状部14cの一端か
ら外径側に突出した鍔部14dとを主体として構成され
る。フランジ部14aには、軸方向の他方に突出した複
数(例えば2つ)のストッパ部14a1が円周方向に所
定間隔で配列形成される。これらストッパ部14a1
は、外輪1のストッパ爪1Af(図1(a)参照)と回
転方向に係合して、外輪1の回動範囲を規制する。ま
た、フランジ部14aには、軸方向の他方に突出した一
対の係止部14a2が形成され、一対の係止部14a2
の円周方向外側面には、第1クラッチ部15の第二の弾
性部材5Bの係合部5B1、5B2がそれぞれ係止され
る(図3参照)。さらにフランジ部14aの外周近傍に
は係止部14a4が形成され、この係止部14a4の円
周方向両側面には、第一クラッチ部15の第一の弾性部
材5Aの係合部5A1,5A2がそれぞれ係止される。
FIG. 11 shows the outer ring 14 as a stationary member. The outer ring 14 has a flange portion 14a extending radially inward, a tubular portion 14c axially extending from the outer diameter end of the flange portion 14a in one axial direction, and an outer diameter side protruding from one end of the tubular portion 14c. Mainly composed of the collar portion 14d. On the flange portion 14a, a plurality of (for example, two) stopper portions 14a1 protruding in the other axial direction are arrayed at predetermined intervals in the circumferential direction. These stopper portions 14a1
Engages with the stopper claw 1Af (see FIG. 1A) of the outer ring 1 in the rotation direction to regulate the rotation range of the outer ring 1. Further, the flange portion 14a is formed with a pair of locking portions 14a2 protruding in the other axial direction, and the pair of locking portions 14a2.
Engagement portions 5B1 and 5B2 of the second elastic member 5B of the first clutch portion 15 are respectively locked to the outer circumferential surface of the first clutch portion 15 (see FIG. 3). Further, a locking portion 14a4 is formed near the outer periphery of the flange portion 14a, and the engaging portions 5A1, 5A2 of the first elastic member 5A of the first clutch portion 15 are formed on both side surfaces in the circumferential direction of the locking portion 14a4. Are locked respectively.

【0048】筒状部14cの内周には、出力軸12のカ
ム面12b1との間に正逆両回転方向に楔隙間を形成す
る円周面14c1が形成される。鍔部14dには、複数
(例えば6つ)の切欠き部14d1が円周方向に所定間
隔で形成される。切欠き部14d1は、後述する固定側
板17の加締部17c(図12参照)と適合する。
On the inner circumference of the cylindrical portion 14c, there is formed a circumferential surface 14c1 which forms a wedge gap between the cam surface 12b1 of the output shaft 12 in both forward and reverse rotation directions. A plurality of (for example, six) notches 14d1 are formed in the flange 14d at predetermined intervals in the circumferential direction. The cutout portion 14d1 is fitted with a caulking portion 17c (see FIG. 12) of the fixed side plate 17 described later.

【0049】外輪14は、例えば、肌焼鋼、機械構造用
炭素鋼、軸受鋼等の鋼材から鍛造加工によって成形さ
れ、浸炭焼入れ焼戻し、浸炭窒化焼入れ焼戻し、高周波
焼入れ焼戻し、ずぶ焼入れ焼戻し等の適宜の熱処理が施
される。この実施形態では、外輪14を形成する鋼材と
して肌焼鋼(例えばクロムモリブデン鋼SCM420)
を使用し、これに熱処理として浸炭焼入れ焼戻しを行っ
て、表層部の表面硬さを57〜62HRCに調整してい
る。なお、外輪14は、鋼材の削出し品、鋼鈑(例えば
冷間圧延鋼鈑)のプレス成形品とすることもできる。
The outer ring 14 is formed by forging from a steel material such as case-hardening steel, carbon steel for machine structure, bearing steel, etc., and is appropriately carburized and tempered, carbonitrided and tempered, induction hardened and soaked, soaked and tempered. Is heat treated. In this embodiment, case hardening steel (for example, chrome molybdenum steel SCM420) is used as the steel material forming the outer ring 14.
Is used as the heat treatment, and the surface hardness of the surface layer portion is adjusted to 57 to 62 HRC. The outer ring 14 may be a machined steel product or a press-formed product of a steel plate (for example, cold rolled steel plate).

【0050】図12は、外輪14に固定される固定側板
17を示している。固定側板17は、半径方向に延びた
フランジ部17aと、フランジ部17aの外径端から外
径側に突出した複数(例えば4つ)のブラケット部17
bと、フランジ部17aの外径端から軸方向の一方に突
出した複数(例えば6つ)の加締部17cと、フランジ
部17aに穿設された複数(例えば8つ)の係合孔17
a1と、フランジ部17aの内径端から軸方向の一方に
突出したボス部17eとを主体として構成される。4つ
のブラケット部17bは円周方向に所定間隔で形成さ
れ、それぞれに中空ピン状の加締部17b1が一体(又
は別体)に形成される。6つの加締部17cは円周方向
に所定間隔で形成され、それぞれ、二股状に分岐した一
対の爪部17c1を備えている。この加締部17cを外
輪14の切欠き部14d1に装着し、一対の爪部17c
1を円周方向の相反する方向に加締めて鍔部14dに当
接させることにより、外輪14の固定側板17に対する
軸方向相対移動および回転方向相対移動を防止すること
ができる。加締部17b1は、相手側部材の取付け穴に
加締固定される。
FIG. 12 shows a fixed side plate 17 fixed to the outer ring 14. The fixed side plate 17 includes a flange portion 17a extending in the radial direction and a plurality of (for example, four) bracket portions 17 protruding outward from the outer diameter end of the flange portion 17a.
b, a plurality (for example, 6) of caulking portions 17c that project in one axial direction from the outer diameter end of the flange portion 17a, and a plurality of (for example, 8) engagement holes 17 that are formed in the flange portion 17a.
The main components are a1 and a boss portion 17e projecting from the inner diameter end of the flange portion 17a in one axial direction. The four bracket portions 17b are formed at predetermined intervals in the circumferential direction, and hollow pin-shaped caulking portions 17b1 are integrally (or separately) formed in each of them. The six caulking portions 17c are formed at predetermined intervals in the circumferential direction, and each of the six caulking portions 17c includes a pair of bifurcated claw portions 17c1. This caulking portion 17c is attached to the notch portion 14d1 of the outer ring 14, and the pair of claw portions 17c
By caulking 1 in the opposite directions in the circumferential direction and bringing it into contact with the flange portion 14d, it is possible to prevent relative movement of the outer ring 14 with respect to the fixed side plate 17 in the axial direction and in the rotational direction. The caulking portion 17b1 is caulked and fixed in the mounting hole of the mating member.

【0051】ボス部17eの内周には、ラジアル軸受面
17e2が形成される。ボス部17eは出力軸12の環
状凹部12b4に挿入され、ボス部17eの外周と環状
凹部12b4の外周壁との間に後述する摩擦部材(1
9:図13参照)が装着される。係合孔17a1は摩擦
部材19の凸部19aと回転方向に係合して、摩擦部材
(19)の固定側板17に対する相対回転を防止する。
ボス部17eのラジアル軸受面17e2は、環状凹部1
2b4のジャーナル面12b5に外挿され、ジャーナル
面12b5をラジアル方向に支持する。
A radial bearing surface 17e2 is formed on the inner circumference of the boss portion 17e. The boss 17e is inserted into the annular recess 12b4 of the output shaft 12, and a friction member (1) described later is provided between the outer periphery of the boss 17e and the outer peripheral wall of the annular recess 12b4.
9: see FIG. 13). The engagement hole 17a1 engages with the convex portion 19a of the friction member 19 in the rotational direction to prevent the friction member (19) from rotating relative to the fixed side plate 17.
The radial bearing surface 17e2 of the boss portion 17e is the annular recess 1
The journal surface 12b5 of 2b4 is extrapolated to support the journal surface 12b5 in the radial direction.

【0052】固定側板17は、例えば、冷間圧延鋼鈑等
の鋼鈑材からプレス加工によって成形される。この実施
形態では、固定側板17を形成する鋼板材として冷間圧
延鋼鈑(例えばSPCE)を使用している。また、加締
部17c及び17b1を加締加工する際の加工性等に配
慮して、熱処理は施していない。なお、加締部17c及
び17b1等の加締加工を行う部位に防炭処理(又は防
炭防窒処理)を施して、浸炭焼入れ焼戻し(又は浸炭窒
化焼入れ焼戻し)を行っても良い。
The fixed side plate 17 is formed by pressing a steel plate material such as cold rolled steel plate, for example. In this embodiment, cold-rolled steel plate (for example, SPCE) is used as the steel plate material forming the fixed side plate 17. Further, in consideration of workability when caulking the caulking portions 17c and 17b1, heat treatment is not performed. In addition, carburizing and tempering (or carbonitriding and quenching and tempering) may be performed by performing carburizing prevention (or carburizing and denitrifying treatment) on the portion to be crimped such as the crimped portions 17c and 17b1.

【0053】図13は、制動手段としての摩擦部材19
を示している。この実施形態において、摩擦部材19は
リング状のもので、その一方の端面には複数(例えば8
つ)の凸部19aが円周方向に所定間隔で形成される。
凸部19aは、固定側板17の係合孔17a1と回転方
向に係合して、摩擦部材19の固定側板17に対する相
対回転を防止する。
FIG. 13 shows a friction member 19 as a braking means.
Is shown. In this embodiment, the friction member 19 has a ring shape, and a plurality of friction members (for example, 8
Convex portions 19a are formed at predetermined intervals in the circumferential direction.
The convex portion 19a engages with the engaging hole 17a1 of the fixed side plate 17 in the rotation direction, and prevents the friction member 19 from rotating relative to the fixed side plate 17.

【0054】摩擦部材19は、ゴムや合成樹脂等の弾性
材料で形成され、例えば出力軸12の環状凹部12b4
の外周壁に締代をもって圧入される。摩擦部材19の外
周と環状凹部12b4の外周壁との間に生じる摩擦力に
よって、出力軸12に回転方向の制動力(摩擦制動力)
が与えられる。この制動力(制動トルク)の大きさは、
出力軸12に入力される逆入力トルクの大きさを勘案し
て適宜設定すれば良いが、逆入力トルクの還流現象を効
果的に防止する観点から、想定される逆入力トルクと同
程度の大きさに設定するのが好ましい。この実施形態の
ように、制動手段として摩擦部材19を用いると、制動
力を摩擦部材19の締代調整によって設定し、また変更
できるという利点がある。
The friction member 19 is made of an elastic material such as rubber or synthetic resin, and is, for example, an annular recess 12b4 of the output shaft 12.
It is press-fitted to the outer peripheral wall with a tight margin. The frictional force generated between the outer periphery of the friction member 19 and the outer peripheral wall of the annular recess 12b4 causes the output shaft 12 to have a braking force in the rotational direction (friction braking force).
Is given. The magnitude of this braking force (braking torque) is
It may be appropriately set in consideration of the magnitude of the reverse input torque input to the output shaft 12, but from the viewpoint of effectively preventing the reverse input torque recirculation phenomenon, the magnitude is approximately the same as the assumed reverse input torque. It is preferable to set the height. When the friction member 19 is used as the braking means as in this embodiment, there is an advantage that the braking force can be set or changed by adjusting the interference of the friction member 19.

【0055】摩擦部材19の材質は特に問わないが、こ
の実施形態では、摩擦部材19を合成樹脂材料、例えば
ポリアセタール(POM)にグラスファイバーを25重
量%配合した合成樹脂材料の射出成形品としている。
The material of the friction member 19 is not particularly limited, but in this embodiment, the friction member 19 is an injection molded product of a synthetic resin material, for example, a synthetic resin material in which glass fiber is mixed in 25% by weight of polyacetal (POM). .

【0056】第1クラッチ部15の構成は、既述の図1
〜図6に示すクラッチユニットと比較すると、内輪13
が出力側部材としての出力軸12の外周側に配置されて
いる回転部材である点のみが相違しており、その他の構
成は同一である。従って、第1クラッチ部15の作用に
ついては、既述の図1〜図6に基づく説明事項と実質的
に同一であるため、その説明を省略する。
The structure of the first clutch portion 15 is the same as that shown in FIG.
~ Compared with the clutch unit shown in Fig. 6, the inner ring 13
Is a rotating member arranged on the outer peripheral side of the output shaft 12 as the output side member, and the other configurations are the same. Therefore, the operation of the first clutch portion 15 is substantially the same as the description based on the above-described FIGS. 1 to 6, and thus the description thereof will be omitted.

【0057】図15(図8のA−A断面図)は、第2ク
ラッチ部16を示している。第2クラッチ部16は、外
輪14に設けられた円周面14c1と、出力軸12に設
けられた複数(例えば8つ)のカム面12b1と、各カ
ム面12b1と円周面14c1との間に介在する係合子
としての一対(例えば総数8対)のローラ30と、一対
のローラ30間に介在する弾性部材、例えば断面N字形
の板ばね31と、内輪13の柱部13cと、内輪13の
ピン13b1および出力軸12のピン孔12b3とを主
要な要素として構成される。なお、この実施形態におい
て、板ばね31はステンレス鋼(例えばSUS301C
PS−H)で形成し、熱処理としてテンパー処理を施し
ている。
FIG. 15 (AA sectional view of FIG. 8) shows the second clutch portion 16. The second clutch portion 16 includes a circumferential surface 14c1 provided on the outer ring 14, a plurality (for example, eight) cam surfaces 12b1 provided on the output shaft 12, and a gap between each cam surface 12b1 and the circumferential surface 14c1. A pair of rollers 30 (for example, a total of 8 pairs) as an intervening member, an elastic member interposed between the pair of rollers 30, such as a leaf spring 31 having an N-shaped cross section, a column portion 13c of the inner ring 13, and an inner ring 13. The pin 13b1 and the pin hole 12b3 of the output shaft 12 are configured as main elements. In addition, in this embodiment, the leaf spring 31 is made of stainless steel (for example, SUS301C).
PS-H) and tempered as a heat treatment.

【0058】図16に拡大して示すように、中立位置に
おいて、一対のローラ30は板ばね31によって、それ
ぞれ、カム面12b1と円周面14c1との間に形成さ
れる正逆両回転方向の楔隙間の方向に押圧される。この
時、内輪13の各柱部13cと各ローラ30との間には
それぞれ回転方向隙間δ1が存在する。また、内輪13
のピン13b1と出力軸12のピン孔12b3との間に
は正逆両回転方向にそれぞれ回転方向隙間δ2が存在す
る。回転方向隙間δ1と回転方向隙間δ2とは、δ1<
δ2の関係を有する。回転方向隙間δ1の大きさは、例
えば0〜0.4mm(第2クラッチ部16の軸心を中心
として0〜1.5°)程度、回転方向隙間δ2の大きさ
は、例えば0.5〜0.8mm(第2クラッチ部16の
軸心を中心として1.8〜3.7°)程度である。
As shown in an enlarged view in FIG. 16, in the neutral position, the pair of rollers 30 are formed by the leaf spring 31 in the normal and reverse rotational directions formed between the cam surface 12b1 and the circumferential surface 14c1, respectively. It is pressed in the direction of the wedge gap. At this time, there is a rotational gap δ1 between each column portion 13c of the inner ring 13 and each roller 30. Also, the inner ring 13
A rotational gap δ2 exists between the pin 13b1 and the pin hole 12b3 of the output shaft 12 in both the forward and reverse rotational directions. The rotational gap δ1 and the rotational gap δ2 are δ1 <
It has a relationship of δ2. The size of the rotational gap δ1 is, for example, about 0 to 0.4 mm (0 to 1.5 ° about the axis of the second clutch portion 16), and the size of the rotational gap δ2 is, for example, 0.5 to. It is about 0.8 mm (1.8 to 3.7 ° about the axis of the second clutch portion 16).

【0059】同図に示す状態で、例えば、出力軸12に
時計方向の逆入力トルクが入力されると、反時計方向
(回転方向後方)のローラ30がその方向の楔隙間と楔
係合して、出力軸12が外輪14に対して時計方向にロ
ックされる。出力軸12に反時計方向の逆入力トルクが
入力されると、時計方向(回転方向後方)のローラ30
がその方向の楔隙間と楔係合して、出力軸12が外輪1
4に対して反時計方向にロックされる。従って、出力軸
12からの逆入力トルクは、第2クラッチ部16によっ
て正逆両回転方向にロックされ、第1クラッチ部15へ
の逆入力トルクの還流が遮断される。
In the state shown in the figure, for example, when a counterclockwise input torque is input to the output shaft 12, the roller 30 in the counterclockwise direction (rearward in the rotational direction) is wedge-engaged with the wedge gap in that direction. The output shaft 12 is locked in the clockwise direction with respect to the outer ring 14. When a counterclockwise reverse input torque is input to the output shaft 12, the roller 30 rotates clockwise (rotationally rearward).
Engages with the wedge gap in that direction, and the output shaft 12 becomes the outer ring 1
It is locked counterclockwise with respect to 4. Therefore, the reverse input torque from the output shaft 12 is locked in the forward and reverse rotation directions by the second clutch portion 16, and the recirculation of the reverse input torque to the first clutch portion 15 is blocked.

【0060】図17は、外輪1からの入力トルク(同図
で時計方向)が第1クラッチ部15を介して内輪13に
入力され、内輪13が同図で時計方向に回動を始めた初
期状態を示している。回転方向隙間がδ1<δ2に設定
されているため、先ず、内輪13の反時計方向(回転方
向後方)の柱部13cがその方向(回転方向後方)のロ
ーラ30と係合して、これを板ばね31の弾性力に抗し
て時計方向(回転方向前方)に押圧する。これにより、
反時計方向(回転方向後方)のローラ30がその方向の
楔隙間から離脱して、出力軸12のロック状態が解除さ
れる。従って、出力軸12は時計方向に回動可能とな
る。
In FIG. 17, the input torque (clockwise in the figure) from the outer wheel 1 is input to the inner ring 13 via the first clutch portion 15, and the inner ring 13 starts to rotate clockwise in the figure. It shows the state. Since the clearance in the rotation direction is set to δ1 <δ2, first, the counterclockwise (rearward in the rotation direction) column portion 13c of the inner ring 13 engages with the roller 30 in that direction (rearward in the rotation direction), and The leaf spring 31 is pressed in the clockwise direction (forward in the rotation direction) against the elastic force. This allows
The roller 30 in the counterclockwise direction (rearward in the rotation direction) separates from the wedge gap in that direction, and the locked state of the output shaft 12 is released. Therefore, the output shaft 12 can be rotated clockwise.

【0061】内輪13がさらに時計方向に回動すると、
図18に示すように、内輪13のピン13b1が出力軸
12のピン孔12b3と時計方向に係合する。これによ
り、内輪13からの時計方向の入力トルクがピン13b
1およびピン孔12b3を介して出力軸12に伝達さ
れ、出力軸12が時計方向に回動する。外輪1に反時計
方向の入力トルクが入力された場合は、上記とは逆の動
作で出力軸12が反時計方向に回動する。従って、外輪
1からの正逆両回転方向の入力トルクは、第1クラッチ
部15、内輪13、およびトルク伝達手段としてのピン
13b1およびピン孔12b3を介して出力軸12に伝
達され、出力軸12が正逆両回転方向に回動する。な
お、内輪13からの入力トルクがなくなると、板ばね3
1の弾性復元力によって図16に示す中立位置に復帰す
る。
When the inner ring 13 is further rotated clockwise,
As shown in FIG. 18, the pin 13b1 of the inner ring 13 engages with the pin hole 12b3 of the output shaft 12 in the clockwise direction. As a result, the clockwise input torque from the inner ring 13 is applied to the pin 13b.
1 is transmitted to the output shaft 12 via the pin hole 12b3, and the output shaft 12 rotates clockwise. When the counterclockwise input torque is input to the outer ring 1, the output shaft 12 rotates counterclockwise by the operation opposite to the above. Therefore, the input torque from the outer ring 1 in both the forward and reverse rotation directions is transmitted to the output shaft 12 through the first clutch portion 15, the inner ring 13, and the pin 13b1 and the pin hole 12b3 as the torque transmitting means, and the output shaft 12 Rotates in both forward and reverse rotation directions. When the input torque from the inner ring 13 disappears, the leaf spring 3
The elastic restoring force of 1 returns to the neutral position shown in FIG.

【0062】このように第2クラッチ部16は、外輪1
の正逆両方向の入力トルクを内輪13を介して出力軸1
2に伝達する一方、出力軸12からの逆入力トルクの内
輪13や外輪1への伝達を遮断する逆入力トルク遮断機
構として機能する。
As described above, the second clutch portion 16 has the outer ring 1
Input torque in both forward and reverse directions via the inner ring 13 to the output shaft 1
2 functions as a reverse input torque cutoff mechanism that cuts off the reverse input torque from the output shaft 12 to the inner ring 13 and the outer ring 1.

【0063】上述した外輪1、出力軸12、内輪13、
外輪14、第1クラッチ部15、第2クラッチ部16、
固定側板17および摩擦部材19を図8に示す態様でア
ッセンブリすると、この実施形態の回転駆動装置が完成
する。外輪1には例えば樹脂製の操作レバー23が結合
され、出力軸12は図示されていない出力側機構の回動
部材に連結される。また、固定側板17は図示されてい
ないケーシング等の固定部材に加締部17b1で加締固
定される。この装置は、例えば、操作部材の回動操作に
よる入力トルクを出力側機構に伝達して所要部位の位置
調整を行う装置において、操作部材の非操作時、出力側
機構の位置が変動しないようこれを保持する機能が求め
られる用途に好適である。
The outer ring 1, the output shaft 12, the inner ring 13,
The outer ring 14, the first clutch portion 15, the second clutch portion 16,
When the fixed side plate 17 and the friction member 19 are assembled in the manner shown in FIG. 8, the rotary drive device of this embodiment is completed. An operation lever 23 made of resin, for example, is coupled to the outer ring 1, and the output shaft 12 is connected to a rotating member of an output side mechanism (not shown). Further, the fixed side plate 17 is caulked and fixed by a caulking portion 17b1 to a fixing member such as a casing (not shown). This device is, for example, a device that transmits the input torque due to the rotating operation of the operating member to the output side mechanism to adjust the position of the required portion, so that the position of the output side mechanism does not change when the operating member is not operated. It is suitable for applications that require the function of holding

【0064】[0064]

【発明の効果】このように本発明によれば、入力側部材
と静止側部材の間に、入力側部材を中立位置に復帰させ
る第一の弾性部材を配置し、入力側部材と回転部材との
間のロック/アンロック切り替え用の機構とは無関係に
直接弾性力を入力側部材に作用させている。従って、入
力側部材には大きな弾性力を作用させることができ、こ
れより入力トルクの開放時には入力側部材を確実に中立
位置に復帰させることが可能となって、クラッチユニッ
ト、さらにはこれを含む回転駆動装置の作動安定性を高
めることができる。
As described above, according to the present invention, the first elastic member for returning the input side member to the neutral position is disposed between the input side member and the stationary side member, and the input side member and the rotating member are provided. The elastic force is directly applied to the input side member irrespective of the lock / unlock switching mechanism. Therefore, a large elastic force can be applied to the input side member, which allows the input side member to be reliably returned to the neutral position when the input torque is released. The operational stability of the rotary drive device can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明にかかるクラッチユニットの全体構成を
示す縦断面図(a図)、および(a)図中のB−B断面
図である。
FIG. 1 is a vertical sectional view (FIG. 1A) showing an overall configuration of a clutch unit according to the present invention, and a BB sectional view in FIG. 1A.

【図2】上記クラッチユニットの保持器を示す斜視図で
ある。
FIG. 2 is a perspective view showing a retainer of the clutch unit.

【図3】第一および第二の弾性部材の装着状態を概略図
示する正面図である。
FIG. 3 is a front view schematically showing a mounting state of first and second elastic members.

【図4】クラッチユニットの動作を概念的に説明する断
面図である。
FIG. 4 is a sectional view conceptually explaining the operation of the clutch unit.

【図5】クラッチユニットの動作を概念的に説明する断
面図である。
FIG. 5 is a sectional view conceptually explaining the operation of the clutch unit.

【図6】クラッチユニットの動作を概念的に説明する断
面図である。
FIG. 6 is a sectional view conceptually explaining the operation of the clutch unit.

【図7】比較品の動作を概念的に説明する断面図であ
る。
FIG. 7 is a sectional view conceptually explaining the operation of the comparative product.

【図8】上記クラッチユニットを含む回転駆動装置の断
面図である。
FIG. 8 is a sectional view of a rotation drive device including the clutch unit.

【図9】回転駆動装置の出力軸を示す正面図(a)、図
9(a)のB−B線断面図(b)である。
FIG. 9 is a front view (a) showing an output shaft of the rotary drive device, and a sectional view (b) taken along the line BB of FIG. 9 (a).

【図10】回転駆動装置の内輪(回転部材)を示す正面
図(a)、図10(a)のB−B線断面図である
(b)、要部拡大図(c)である。
FIG. 10 is a front view (a) showing an inner ring (rotating member) of the rotary drive device, a cross-sectional view taken along line BB of FIG. 10 (a), and an enlarged view of a main part (c).

【図11】回転駆動装置の外輪(静止側部材)を示す正
面図(a)、図11(a)のB−B線断面図(b)であ
る。
11 is a front view (a) showing an outer ring (stationary member) of the rotary drive device, and a cross-sectional view (b) taken along the line BB of FIG. 11 (a).

【図12】回転駆動装置の固定側板を示す正面図
(a)、図12(a)のB−B線断面図である。
FIG. 12 is a front view (a) showing a fixed side plate of the rotary drive device, and a sectional view taken along line BB of FIG. 12 (a).

【図13】回転駆動装置の摩擦部材(制動手段)を示す
正面図(a)、縦断面図(b)である。
FIG. 13 is a front view (a) and a vertical sectional view (b) showing a friction member (braking means) of a rotary drive device.

【図14】回転駆動装置の第1クラッチ部を示す図8B
−B断面図である。
FIG. 14B is a view showing the first clutch portion of the rotary drive device.
It is a -B sectional view.

【図15】回転駆動装置の第2クラッチ部を示す図8A
−A断面図である。
FIG. 15A is a view showing a second clutch portion of the rotary drive device.
FIG.

【図16】上記第クラッチ部の作用を示す部分拡大正面
図である(中立位置)。
FIG. 16 is a partially enlarged front view showing the action of the first clutch portion (neutral position).

【図17】上記第クラッチ部の作用を示す部分拡大正面
図である(ロック解除時)。
FIG. 17 is a partially enlarged front view showing the action of the above-mentioned first clutch portion (when unlocked).

【図18】上記第クラッチ部の作用を示す部分拡大正面
図である(トルク伝達時)。
FIG. 18 is a partially enlarged front view showing the action of the first clutch portion (during torque transmission).

【符号の説明】[Explanation of symbols]

1 外輪(入力側部材) 1a 係止部 1A 第1薄肉部材 1Aa カム面 1B 第2薄肉部材 2 内輪(回転部材) 2a 円周面 3 ローラ(係合子) 4 保持器 4b 切欠き部 5A 第一の弾性部材 5A1 係合部 5A2 係合部 5B 第二の弾性部材 5B1 係合部 5B2 係合部 5B3 逃げ部 6 操作レバー(操作部材) 7 静止側部材 7a 係止部 7b 係止部 12 出力軸(出力側部材) 13 内輪(回転部材) 14 外輪(静止側部材) 14a2 係止部 14a4 係止部 15 第1クラッチ部(クラッチユニット) 16 第2クラッチ部(逆入力遮断機構) 23 操作レバー(操作部材) 1 Outer ring (input side member) 1a Locking part 1A 1st thin member 1Aa cam surface 1B Second thin member 2 Inner ring (rotating member) 2a Circumferential surface 3 roller (engager) 4 cage 4b Notch 5A First elastic member 5A1 engaging part 5A2 engaging part 5B Second elastic member 5B1 engaging part 5B2 engaging part 5B3 escape area 6 Operation lever (operation member) 7 Stationary member 7a Locking part 7b Locking part 12 Output shaft (output side member) 13 Inner ring (rotating member) 14 Outer ring (stationary member) 14a2 locking part 14a4 locking part 15 First clutch part (clutch unit) 16 Second clutch part (reverse input cutoff mechanism) 23 Operation lever (operation member)

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 トルクが入力される入力側部材と、トル
クが出力される回転部材と、回転が拘束される静止側部
材と、入力側部材からの入力トルクで回転部材を回転さ
せるトルク伝達部とを具備し、入力側部材の中立位置か
らの繰り返し回転により、トルク伝達部を介して、回転
部材に入力側部材の各回転動作ごとの回転量を蓄積する
クラッチユニットにおいて、 入力側部材と静止側部材の間に、入力トルクで弾性力を
蓄積すると共に、この蓄積した弾性力で入力トルクの開
放時に入力側部材を中立位置に復帰させる第一の弾性部
材を配置したことを特徴とするクラッチユニット。
1. An input side member to which a torque is input, a rotating member to which a torque is output, a stationary side member to which rotation is restricted, and a torque transmission unit for rotating the rotating member by the input torque from the input side member. In the clutch unit that stores the rotation amount of each rotation operation of the input side member in the rotation member via the torque transmission unit by the repeated rotation from the neutral position of the input side member, A clutch characterized in that an elastic force is accumulated by the input torque between the side members, and a first elastic member is arranged to return the input side member to the neutral position when the input torque is released by the accumulated elastic force. unit.
【請求項2】 第一の弾性部材を有端リング状の板ばね
で形成した請求項1記載のクラッチユニット。
2. The clutch unit according to claim 1, wherein the first elastic member is formed by a leaf spring having an end ring shape.
【請求項3】 さらにトルク伝達部としての係合子を保
持する保持器と、保持器と静止側部材との間に配置した
第二の弾性部材とを備え、入力トルクの作用時に第一お
よび第二の弾性部材に弾性力を蓄積すると共に、入力ト
ルクの開放時に両弾性部材の弾性力で係合子の上記隙間
への噛み込みを解除する請求項1記載のクラッチユニッ
ト。
3. A retainer for holding an engaging element as a torque transmitting portion, and a second elastic member arranged between the retainer and a stationary member, wherein the first and the second elastic members are actuated when an input torque is applied. The clutch unit according to claim 1, wherein an elastic force is accumulated in the second elastic member, and when the input torque is released, the elastic force of both elastic members releases the engagement of the engaging element with the gap.
【請求項4】 第一および第二の弾性部材を有端リング
状の板ばねで形成した請求項3記載のクラッチユニッ
ト。
4. The clutch unit according to claim 3, wherein the first and second elastic members are formed by leaf springs having an end ring shape.
【請求項5】 内径側の弾性部材のうち、トルク入力時
の弾性変形で外径側の弾性部材と干渉する部分に当該干
渉を回避する逃げ部を形成した請求項3または4記載の
クラッチユニット。
5. The clutch unit according to claim 3, wherein a relief portion for avoiding the interference is formed in a portion of the inner diameter side elastic member that interferes with the outer diameter side elastic member due to elastic deformation at the time of torque input. .
【請求項6】 請求項1〜5の何れかに記載したクラッ
チユニットと、トルクが出力される出力側部材と、上記
クラッチユニットの回転部材と出力側部材との間に配置
され、入力側部材の入力トルクを回転部材を介して出力
側部材に伝達し、出力側部材からの逆入力トルクの回転
部材への伝達を遮断する逆入力トルク遮断機構とを有す
る回転駆動装置。
6. A clutch unit according to any one of claims 1 to 5, an output side member for outputting a torque, and an input side member arranged between a rotating member and an output side member of the clutch unit. And a reverse input torque cutoff mechanism that cuts off transmission of reverse input torque from the output side member to the rotary member by transmitting the input torque to the output side member via the rotary member.
JP2001367173A 2001-11-30 2001-11-30 Clutch unit Expired - Lifetime JP3977065B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001367173A JP3977065B2 (en) 2001-11-30 2001-11-30 Clutch unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001367173A JP3977065B2 (en) 2001-11-30 2001-11-30 Clutch unit

Publications (2)

Publication Number Publication Date
JP2003166555A true JP2003166555A (en) 2003-06-13
JP3977065B2 JP3977065B2 (en) 2007-09-19

Family

ID=19176958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001367173A Expired - Lifetime JP3977065B2 (en) 2001-11-30 2001-11-30 Clutch unit

Country Status (1)

Country Link
JP (1) JP3977065B2 (en)

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