JP2012219910A - Bi-directional clutch - Google Patents

Bi-directional clutch Download PDF

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Publication number
JP2012219910A
JP2012219910A JP2011086161A JP2011086161A JP2012219910A JP 2012219910 A JP2012219910 A JP 2012219910A JP 2011086161 A JP2011086161 A JP 2011086161A JP 2011086161 A JP2011086161 A JP 2011086161A JP 2012219910 A JP2012219910 A JP 2012219910A
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Prior art keywords
shaft portion
output shaft
input shaft
bidirectional clutch
wall surface
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JP2011086161A
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Japanese (ja)
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Daisuke Asada
大輔 浅田
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Nifco Inc
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Nifco Inc
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Priority to JP2011086161A priority Critical patent/JP2012219910A/en
Priority to PCT/JP2012/059243 priority patent/WO2012137841A1/en
Publication of JP2012219910A publication Critical patent/JP2012219910A/en
Pending legal-status Critical Current

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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
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
    • F16D41/10—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
    • F16D41/105—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing the intermediate members being of circular cross-section, of only one size and wedging by rolling movement not having an axial component between inner and outer races, one of which is cylindrical

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

Abstract

PROBLEM TO BE SOLVED: To provide a bi-directional clutch in which the shapes of parts are simplified and the number of the parts can be reduced.SOLUTION: The bi-directional clutch includes an input shaft section, an output shaft section, needle members, and a housing member which pivotably houses the input shaft section, the output shaft section, and the needle members. The bi-directional clutch is configured so that rotational driving force from the input shaft section is transmitted to the output shaft section and rotational driving force from the output shaft section is not transmitted to the input shaft section. The housing member has a cylindrical inner wall surface. The input shaft section has a plurality of operation elements extending along the output shaft section from an end surface of the input shaft section. The needle members are provided between the cylindrical inner wall surface and the operation elements in such a manner that each of the needle members is located between adjacent operation elements. The output shaft section is a shaft which is at a side of an outputted shaft having a cross-sectional shape of a regular polygon, and thus the shapes of parts are simplified and the number of the parts can be reduced.

Description

この発明は、入力軸側からの駆動力を出力軸側に伝達するが、出力軸側から駆動力をロック機構或いはフリー機構によって入力軸側へ伝達するのを阻止する双方向クラッチに関するものである。   The present invention relates to a bidirectional clutch that transmits driving force from the input shaft side to the output shaft side, but prevents transmission of driving force from the output shaft side to the input shaft side by a lock mechanism or a free mechanism. .

従来より双方向クラッチは、種々提案されている。例えば、特許文献１には入力軸側に設けられた入力係合片と出力軸側に設けられた出力係合片の間にバネ支持された中間部材（ニードル部材）が配置されており、入力軸を左右何れの方向に回転させても中間部材を介して出力軸に伝達されるが、出力軸を左右何れの方向に回転させても、ロックされて入力軸に伝達しない構成である。   Conventionally, various bidirectional clutches have been proposed. For example, in Patent Document 1, an intermediate member (needle member) supported by a spring is disposed between an input engagement piece provided on the input shaft side and an output engagement piece provided on the output shaft side. Even if the shaft is rotated in either the left or right direction, it is transmitted to the output shaft via the intermediate member. However, even if the output shaft is rotated in either the left or right direction, it is locked and not transmitted to the input shaft.

特開２００８−１０１７１５号公報JP 2008-101715 A

しかし、このような構成の従来の双方向クラッチは、部品点数が多い上に、中間部材（ニードル部材）をバネ部材で保持しなくてはならず構成が複雑である。また、入力軸側には、入力係合片を出力軸側には、出力係合片をそれぞれ設ける必要があり、部品形状が複雑で製造コストが嵩むと云う欠点が存在した。更に、部品形状が複雑であるために、組み立て工数がかかり作業性が悪いものであった。   However, the conventional bidirectional clutch having such a configuration has a large number of parts, and the intermediate member (needle member) must be held by a spring member, and the configuration is complicated. Further, it is necessary to provide an input engagement piece on the input shaft side and an output engagement piece on the output shaft side, respectively, and there is a disadvantage that the part shape is complicated and the manufacturing cost increases. Furthermore, since the part shape is complicated, assembly man-hours are required and workability is poor.

この発明は、上述した不都合を解消するべくなされたもので、入力軸部と出力軸部とニードル部材とこれらを回動可能に収納するハウジング部材とを備え、ハウジング部材は円筒状の内壁面を有するとともに、前記入力軸部は、端面から出力軸部方向に延びる複数の作動片を有し、前記作動片と前記円筒状の内壁面の間であって、互いに隣り合う前記作動片の間に前記ニードル部材が備えられており、前記出力軸部は断面が正多角形に形成され、被出力軸部側と連結される出力軸シャフトを兼用する構成し、形状の簡略化と部品点数の削減を達成できる双方向クラッチを提供するものである。   The present invention has been made to eliminate the above-described disadvantages, and includes an input shaft portion, an output shaft portion, a needle member, and a housing member that rotatably accommodates these, and the housing member has a cylindrical inner wall surface. The input shaft portion has a plurality of operating pieces extending from the end surface in the output shaft portion direction, between the operating pieces and the cylindrical inner wall surface, and between the adjacent operating pieces. The needle member is provided, and the output shaft portion is formed in a regular polygonal cross section, and is also used as an output shaft shaft connected to the output shaft portion side, simplifying the shape and reducing the number of parts A bidirectional clutch that can achieve the above is provided.

この発明は、以下のような内容である。
（１）本発明の双方向クラッチは、入力軸部と出力軸部とニードル部材と、これらを回動可能に収納するハウジング部材とを備え、前記入力軸部からの回転駆動力は前記出力軸部に伝達され、前記出力軸部からの回転駆動力は前記入力軸部に伝達されない双方向クラッチにおいて、前記ハウジング部材は円筒状の内壁面を有するとともに、前記入力軸部は、端面から出力軸部方向に延びる複数の作動片を有し、前記作動片と前記円筒状の内壁面の間であって、互いに隣り合う前記作動片の間に前記ニードル部材が備えられており、前記出力軸部は断面が正多角形に形成された被出力軸部側のシャフトであることを特徴とする。
（２）（１）に記載の双方向クラッチにおいて、前記入力軸部の作動片は、前記内壁面に対向する側面が左右の回転方向に延設されて先端片となり、前記入力軸部が左右いずれの方向に回転しても、前記先端片がニードル部材を介して出力軸部を回転駆動することを特徴とする。
（３）（１）または（２）に記載の双方向クラッチにおいて、前記入力軸部の複数の作動片は、ハウジング部材の中心軸方向に延設された凸形部を有し、互いに隣り合う凸形部先端の間の距離寸法が前記ニードル部材の外径寸法より小さく構成されたことを特徴とする。
（４）（１）〜（３）に記載の双方向クラッチにおいて、前記凸形部の出力軸部に対向する面が円弧状に形成されたことを特徴とする。
（５）（１）〜（４）に記載の双方向クラッチにおいて、前記入力軸部の作動片は、左右の前記ニードル部材に対向する部位に凹状に形成が設けられていることを特徴とする。
（６）（１）〜（５）に記載の双方向クラッチにおいて、前記ハウジング部材の内壁面は、ハウジング部材に装着された金属スリーブの内壁面であることを特徴とする。 The present invention has the following contents.
(1) The bidirectional clutch according to the present invention includes an input shaft portion, an output shaft portion, a needle member, and a housing member that rotatably accommodates the input shaft portion, and the rotational driving force from the input shaft portion is the output shaft. In the bidirectional clutch in which the rotational driving force from the output shaft portion is not transmitted to the input shaft portion, the housing member has a cylindrical inner wall surface, and the input shaft portion is connected to the output shaft from the end surface. A plurality of actuating pieces extending in the direction of the portion, the needle member being provided between the actuating pieces and the cylindrical inner wall surface, and between the actuating pieces adjacent to each other, and the output shaft portion Is characterized in that it is a shaft on the output shaft portion side whose cross section is formed in a regular polygon.
(2) In the bidirectional clutch according to (1), the operating piece of the input shaft portion is a tip piece with a side surface facing the inner wall surface extending in the left-right rotation direction, and the input shaft portion is Even if it rotates in any direction, the said tip piece rotates the output shaft part via a needle member, It is characterized by the above-mentioned.
(3) In the bidirectional clutch according to (1) or (2), the plurality of operating pieces of the input shaft portion have convex portions extending in the central axis direction of the housing member and are adjacent to each other. The distance between the tips of the convex portions is smaller than the outer diameter of the needle member.
(4) In the bidirectional clutch described in (1) to (3), a surface of the convex portion facing the output shaft portion is formed in an arc shape.
(5) In the bidirectional clutch according to (1) to (4), the operation piece of the input shaft portion is provided with a concave shape at a portion facing the left and right needle members. .
(6) In the bidirectional clutch according to (1) to (5), the inner wall surface of the housing member is an inner wall surface of a metal sleeve attached to the housing member.

この発明によれば、入力軸部と出力軸部とニードル部材と、これらを回動可能に収納するハウジング部材とを備え、前記入力軸部からの回転駆動力は前記出力軸部に伝達され、前記出力軸部からの回転駆動力は前記入力軸部に伝達されない双方向クラッチにおいて、前記ハウジング部材は円筒状の内壁面を有するとともに、前記入力軸部は、端面から出力軸部方向に延びる複数の作動片を有し、前記作動片と前記円筒状の内壁面の間であって、互いに隣り合う前記作動片の間に前記ニードル部材が備えられており、前記出力軸部は断面が正多角形に形成された被出力軸部側のシャフトであるので、部品形状の簡略化が図れるとともに、部品点数の削減が図れる。また、小型軽量化を達成できる。
また、前記入力軸部の作動片は、前記内壁面に対向する側面が左右の回転方向に延設されて先端片となり、前記入力軸部が左右いずれの方向に回転しても、前記先端片がニードル部材を介して出力軸部を回転駆動するので、ニードル部材を支えるバネ部材が必要なく、部品点数の低減を実現できる。
また、前記入力軸部の複数の作動片は、ハウジング部材の中心軸方向に延設された凸形部を有し、互いに隣り合う凸形部先端の間の距離寸法が前記ニードル部材の外径寸法より小さく構成されたので、組み付けの際にニードル部材が中心に寄ってしまうことがなく、出力軸部の装着作業が容易である。
また、前記凸形部の出力軸部に対向する面が円弧状に形成されたので、出力軸部シャフトの断面を正多角形にしたことによる干渉を防止して、伝達駆動力の損失を未然に阻止でき、伝達効率の向上を図ることができる。
また、前記入力軸部の作動片は、左右の前記ニードル部材に対向する部位に凹状に形成が設けられているので、ニードル部材の遊びを少なくできるとともに、ニードル部材を支えるバネ部材を廃止できる。
また、前記ハウジング部材の内壁面は、ハウジング部材に装着された金属スリーブの内壁面であるので、ハウジング部材にかかる負荷を低減して双方向クラッチの耐久性を向上することができる。 According to this invention, it comprises an input shaft portion, an output shaft portion, a needle member, and a housing member that rotatably accommodates them, and rotational driving force from the input shaft portion is transmitted to the output shaft portion, In the bidirectional clutch in which the rotational driving force from the output shaft portion is not transmitted to the input shaft portion, the housing member has a cylindrical inner wall surface, and the input shaft portion extends from the end surface toward the output shaft portion. The needle member is provided between the working piece and the cylindrical inner wall surface between the working pieces adjacent to each other, and the output shaft portion has a regular cross section. Since the shaft on the output shaft side is formed in a square shape, the shape of the parts can be simplified and the number of parts can be reduced. Further, a reduction in size and weight can be achieved.
Further, the operating piece of the input shaft portion becomes a tip piece with a side surface facing the inner wall surface extending in the left-right rotation direction, and the tip piece is not affected even if the input shaft portion rotates in either the left or right direction. Since the output shaft portion is rotationally driven through the needle member, there is no need for a spring member that supports the needle member, and the number of parts can be reduced.
Further, the plurality of operating pieces of the input shaft portion have a convex portion extending in the central axis direction of the housing member, and a distance dimension between adjacent convex portions is an outer diameter of the needle member. Since it is configured to be smaller than the dimensions, the needle member does not move to the center during assembly, and the mounting operation of the output shaft portion is easy.
Further, since the surface of the convex portion facing the output shaft portion is formed in an arc shape, interference due to the cross section of the output shaft shaft being a regular polygon is prevented, and loss of transmission driving force is obviated. Therefore, transmission efficiency can be improved.
Further, since the operation piece of the input shaft portion is formed in a concave shape at the portions facing the left and right needle members, the play of the needle member can be reduced and the spring member supporting the needle member can be eliminated.
Further, since the inner wall surface of the housing member is the inner wall surface of the metal sleeve attached to the housing member, the load applied to the housing member can be reduced and the durability of the bidirectional clutch can be improved.

図１は、本発明の一実施の形態である双方向クラッチの分解斜視図である。FIG. 1 is an exploded perspective view of a bidirectional clutch according to an embodiment of the present invention. 図２は、同双方向クラッチの正面図である。FIG. 2 is a front view of the bidirectional clutch. 図３は、同双方向クラッチの右側面図である。FIG. 3 is a right side view of the bidirectional clutch. 図４は、図２のＡ−Ａ線断面図である。4 is a cross-sectional view taken along line AA in FIG. 図５は、図３のＢ−Ｂ線断面図である。5 is a cross-sectional view taken along line BB in FIG. 図６は、同双方向クラッチに使用される入力軸部の左側面図である。FIG. 6 is a left side view of the input shaft portion used in the bidirectional clutch. 図７は、同双方向クラッチに使用される入力軸部の正面図である。FIG. 7 is a front view of an input shaft portion used in the bidirectional clutch. 図８は、同双方向クラッチに使用される入力軸部の右側面図である。FIG. 8 is a right side view of an input shaft portion used in the bidirectional clutch. 図９は、同双方向クラッチに使用されるハウジング部材の左側面図である。FIG. 9 is a left side view of a housing member used for the bidirectional clutch. 図１０は、同双方向クラッチに使用されるハウジング部材の正面図である。FIG. 10 is a front view of a housing member used for the bidirectional clutch. 図１１は、同双方向クラッチに使用されるハウジング部材の右側面図である。FIG. 11 is a right side view of a housing member used for the bidirectional clutch. 図１２は、同双方向クラッチのトルク伝達状態を示す説明図である。FIG. 12 is an explanatory view showing a torque transmission state of the bidirectional clutch. 図１３は、図１２の要部拡大説明図である。FIG. 13 is an enlarged explanatory view of the main part of FIG. 図１４は、同双方向クラッチのトルク伝達状態を示す説明図である。FIG. 14 is an explanatory diagram showing a torque transmission state of the bidirectional clutch. 図１５は、同双方向クラッチのロック状態を示す説明図である。FIG. 15 is an explanatory view showing a locked state of the bidirectional clutch. 図１６は、図１５の要部拡大説明図である。FIG. 16 is an enlarged explanatory view of the main part of FIG. 図１７は、同双方向クラッチのロック状態を示す説明図である。FIG. 17 is an explanatory view showing a locked state of the bidirectional clutch. 図１８は、本発明の双方向クラッチの他の実施形態を示す分解斜視図である。FIG. 18 is an exploded perspective view showing another embodiment of the bidirectional clutch of the present invention. 図１９は、同双方向クラッチの断面図である。FIG. 19 is a cross-sectional view of the bidirectional clutch. 図２０は、同双方向クラッチの要部断面図である。FIG. 20 is a cross-sectional view of a main part of the bidirectional clutch. 図２１は、同双方向クラッチに使用されるスリーブの右側面図である。FIG. 21 is a right side view of a sleeve used in the bidirectional clutch. 図２２は、同双方向クラッチに使用されるスリーブのＣ−Ｃ線断面図である。FIG. 22 is a cross-sectional view taken along line CC of the sleeve used in the bidirectional clutch. 図２３は、同双方向クラッチに使用されるハウジング部材の右側面図である。FIG. 23 is a right side view of a housing member used for the bidirectional clutch. 図２４は、同双方向クラッチに使用されるハウジング部材のＤ−Ｄ線断面図である。FIG. 24 is a cross-sectional view taken along the line DD of a housing member used for the bidirectional clutch.

以下、一実施の形態を示す図面に基づいて本発明を詳細に説明する。図１は本発明の一実施の形態である双方向クラッチの分解斜視図、図２は本発明の双方向クラッチの正面図、図３は本発明の双方向クラッチの右側面図、図４は、図２のＡ−Ａ線断面図、図５は、図３のＢ−Ｂ線断面図である。ここで、本発明の双方向クラッチ１０は、入力軸部１１と出力軸部１２とニードル部材１３と、これらを回動可能に収納するハウジング部材１４とを備え、前記入力軸部１１からの回転駆動力は前記出力軸部１２に伝達され、前記出力軸部１２からの回転駆動力は前記入力軸部１１に伝達されないものであって、ハウジング部材１４は円筒状の内壁面１５を有するとともに、入力軸部１１は、端面から出力軸部方向に延びる複数の作動片１６を有し、作動片１６と円筒状の内壁面１５の間であって、互いに隣り合う前記作動片１６の間に前記ニードル部材１３が備えられており、出力軸部１２は断面が正多角形に形成され、被出力軸部側と連結される出力軸シャフトを兼ねている。   Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment. 1 is an exploded perspective view of a bidirectional clutch according to an embodiment of the present invention, FIG. 2 is a front view of the bidirectional clutch of the present invention, FIG. 3 is a right side view of the bidirectional clutch of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 5 is a cross-sectional view taken along line BB in FIG. Here, the bidirectional clutch 10 of the present invention includes an input shaft portion 11, an output shaft portion 12, a needle member 13, and a housing member 14 that rotatably accommodates them, and rotates from the input shaft portion 11. The driving force is transmitted to the output shaft portion 12, and the rotational driving force from the output shaft portion 12 is not transmitted to the input shaft portion 11. The housing member 14 has a cylindrical inner wall surface 15, The input shaft portion 11 includes a plurality of operating pieces 16 extending from the end surface in the direction of the output shaft portion, and is between the operating pieces 16 and the cylindrical inner wall surface 15 between the operating pieces 16 adjacent to each other. A needle member 13 is provided, and the output shaft portion 12 has a regular polygonal cross section, and also serves as an output shaft shaft connected to the output shaft portion side.

入力軸部１１は、図６〜図８に示すように駆動モータ等に接続される接続孔１７を有した軸１８と円板状のフランジ部１９とフランジ部１９から軸線方向に立設された複数の作動片１６とから構成されている。フランジ部１９は、軸１８より大きな径を有しており、両者は、同芯状に形成されている。また、作動片１６は、軸線方向に所定の長さ寸法を有するとともに、ハウジング部材１４の内壁面１５に対向する側面が左右の回転方向（同心円方向）に延設された先端片２０を有している。また、入力軸部１１の複数の作動片１６は、ハウジング部材１４の中心軸方向に延設された凸形部２１を有し、互いに隣り合う凸形部先端の間の距離寸法Ｈがニードル部材１３の外径寸法（直径）より小さく構成され、組み付け時にニードル部材の動きを抑制している。また、凸形部２１の出力軸部１２に対向する面２１ａが円弧状に形成され、出力軸部１２との干渉を防止して出力損失を防止している。更に、入力軸部１１の作動片１６は、左右に配置されるニードル部材１３に対向する部位１６ａが凹状に形成され、ニードル部材１３のガタ付きを防止し、保持するためのスプリングを不要としている。   As shown in FIGS. 6 to 8, the input shaft portion 11 is erected in the axial direction from a shaft 18 having a connection hole 17 connected to a drive motor or the like, a disk-shaped flange portion 19, and the flange portion 19. It comprises a plurality of operating pieces 16. The flange portion 19 has a larger diameter than the shaft 18, and both are formed concentrically. In addition, the operating piece 16 has a predetermined length dimension in the axial direction, and has a tip piece 20 whose side surface facing the inner wall surface 15 of the housing member 14 extends in the left-right rotation direction (concentric circle direction). ing. The plurality of operating pieces 16 of the input shaft portion 11 have a convex portion 21 extending in the direction of the central axis of the housing member 14, and the distance dimension H between adjacent convex portion tips is a needle member. The outer diameter dimension (diameter) is smaller than 13, and the movement of the needle member is suppressed during assembly. Moreover, the surface 21a facing the output shaft portion 12 of the convex portion 21 is formed in an arc shape, preventing interference with the output shaft portion 12 and preventing output loss. Further, the operating piece 16 of the input shaft portion 11 is formed with a concave portion 16a facing the needle member 13 disposed on the left and right sides to prevent the needle member 13 from rattling and holding a spring. .

図９は、本発明の双方向クラッチに使用されるハウジング部材の左側面図、図１０はハウジング部材の正面図、図１１はハウジング部材の右側面図である。ここで、ハウジング部材１４は、入力軸部１１の作動片１６を回動可能に収納し、内壁面１５を有する円筒部２２とフランジ部１９を収納する円筒部２２より大径のフランジ収納部２３と、円筒部２２の底面に設けられ、出力軸部１２の挿通される出力孔２４とから構成されている。また、フランジ収納部２３には、所定間隔でスリット２３ｂが設けられるとともに、開口端内周に係止爪２３ａが形成されている。また、円筒部２２のフランジ収納部２３に臨む部位は、円筒状突起２２ａに形成されてフランジ部１９に当接する。   9 is a left side view of a housing member used in the bidirectional clutch of the present invention, FIG. 10 is a front view of the housing member, and FIG. 11 is a right side view of the housing member. Here, the housing member 14 rotatably accommodates the operating piece 16 of the input shaft portion 11, and has a cylindrical portion 22 having an inner wall surface 15 and a flange accommodating portion 23 having a larger diameter than the cylindrical portion 22 accommodating the flange portion 19. And an output hole 24 that is provided on the bottom surface of the cylindrical portion 22 and through which the output shaft portion 12 is inserted. In addition, the flange housing portion 23 is provided with slits 23b at predetermined intervals, and a locking claw 23a is formed on the inner periphery of the open end. Further, the portion of the cylindrical portion 22 that faces the flange storage portion 23 is formed on the cylindrical protrusion 22 a and abuts on the flange portion 19.

出力軸部１２は、断面が正多角形に形成された、被出力軸部側、例えば電動ブラインドのスクリーン軸を使用することができる。つまり、出力軸シャフトと出力軸部１２は、同一部材とすることができる。また、正多角形としては、正四角形、正五角形、正六角形、正八角形、正九角形等が挙げられるが、これに限定されることはない。
ニードル部材１３は、円筒形をしており、両端が面取り加工されている。そして、互いに隣り合う作動片１６の間に配設される。本実施の形態では、３本のニードル部材１３が、３個の作動片１６の間に配設されている。 The output shaft portion 12 can use the output shaft portion side whose cross section is formed in a regular polygon, for example, a screen shaft of an electric blind. That is, the output shaft shaft and the output shaft portion 12 can be the same member. Examples of the regular polygon include, but are not limited to, a regular tetragon, a regular pentagon, a regular hexagon, a regular octagon, and a regular pentagon.
The needle member 13 has a cylindrical shape, and both ends are chamfered. And it arrange | positions between the operation pieces 16 adjacent to each other. In the present embodiment, three needle members 13 are disposed between the three operating pieces 16.

以上のように構成された入力軸部１１、出力軸部１２、ニードル部材１３、ハウジング部材１４は図１〜図５に示すように組み立てられる。入力軸部１１のフランジ部１９は、ハウジング部材１４のフランジ収納部２３に装着することにより、開口端内周の係止爪２３ａで係止される。   The input shaft portion 11, the output shaft portion 12, the needle member 13, and the housing member 14 configured as described above are assembled as shown in FIGS. The flange portion 19 of the input shaft portion 11 is locked by the locking claw 23 a on the inner periphery of the opening end by being mounted on the flange housing portion 23 of the housing member 14.

次に、以上のように構成された双方向クラッチ１０の動作態様を図１２〜図１７に従って説明する。先ず、図１２に示すように作動片１６（入力軸部１１）が時計方向に回動する場合、作動片１６の先端片２０がニードル部材１３を出力軸部１２方向に押し付け、出力軸部１２を時計方向に回動する。つまり、ニードル部材１３は、出力軸部１２の外周辺の端部で当接するので、出力軸部１２に回動モーメントが生じる。図１３は、図１２の要部拡大説明図である。作動片１６（入力軸部１１）が時計方向に回動する場合、ニードル部材１３は、作動片１６の先端片２０から矢印Ｍ方向の押圧力を受けるとともに、先端片２０との間に方向Ｎの摩擦力が生じる。また、ニードル部材１３は、出力軸部１２の外周辺１２ａに矢印Ｏ方向の押圧力を与えるとともに反力Ｋを受け、出力軸部１２との間に方向Ｌの摩擦力が生じる。
したがって、出力軸部１２は時計方向に回転することができる。ここで、出力軸部１２に対して働く力は、Ｍ＋Ｎ＝Ｋ＋Ｌ、Ｋ＝Ｏである。このため、入力軸部１１からの駆動力は、出力軸部１２に伝達される。 Next, operation modes of the bidirectional clutch 10 configured as described above will be described with reference to FIGS. First, when the operating piece 16 (input shaft portion 11) rotates clockwise as shown in FIG. 12, the tip piece 20 of the operating piece 16 presses the needle member 13 toward the output shaft portion 12, and the output shaft portion 12 is moved. Rotate clockwise. That is, since the needle member 13 abuts on the outer peripheral end portion of the output shaft portion 12, a turning moment is generated in the output shaft portion 12. FIG. 13 is an enlarged explanatory view of the main part of FIG. When the operating piece 16 (input shaft portion 11) rotates in the clockwise direction, the needle member 13 receives a pressing force in the direction of the arrow M from the distal end piece 20 of the operating piece 16 and is in the direction N between the distal end piece 20 The frictional force is generated. Further, the needle member 13 applies a pressing force in the direction of arrow O to the outer periphery 12 a of the output shaft portion 12 and receives a reaction force K, and a frictional force in the direction L is generated between the needle member 13 and the output shaft portion 12.
Therefore, the output shaft portion 12 can rotate clockwise. Here, the forces acting on the output shaft portion 12 are M + N = K + L and K = O. For this reason, the driving force from the input shaft portion 11 is transmitted to the output shaft portion 12.

図１４は、作動片１６（入力軸部１１）が反時計方向に回動する場合で、作動片１６の先端片２０がニードル部材１３を出力軸部１２方向に押し付け、出力軸部１２を反時計方向に回動する。つまり、ニードル部材１３は、出力軸部１２の外周辺１２ａの端部で当接するので、出力軸部１２に反時計方向の回動モーメントが生じる。したがって、入力軸部１１は、左右いずれの方向に回転しても、出力軸部１２は回転駆動される。   FIG. 14 shows a case where the operating piece 16 (input shaft portion 11) rotates counterclockwise, and the tip piece 20 of the operating piece 16 presses the needle member 13 toward the output shaft portion 12 and counteracts the output shaft portion 12. Rotate clockwise. That is, since the needle member 13 abuts at the end of the outer periphery 12 a of the output shaft portion 12, a counterclockwise turning moment is generated in the output shaft portion 12. Therefore, even if the input shaft portion 11 rotates in either the left or right direction, the output shaft portion 12 is rotationally driven.

図１５は、本発明の双方向クラッチのロック状態を示す説明図、図１６はその要部拡大説明図である。出力軸部１２が時計方向（図中右方向）に回転しようとした場合、外周辺１２ａがニードル部材１３を矢印Ｅ方向に押圧し、ニードル部材１３との間に方向Ｆの摩擦力が生じる。また、ニードル部材１３は、内壁面１５から矢印Ｇ方向の反力を受け、内壁面１５との間に方向Ｊの摩擦力が生じる。したがって、出力軸部１２はそれ以上回転することができず、ロックされる。このため、出力軸部１２からの駆動力は、入力軸部１１に伝達されることがない。   FIG. 15 is an explanatory view showing a locked state of the bidirectional clutch of the present invention, and FIG. 16 is an enlarged explanatory view of a main part thereof. When the output shaft portion 12 is about to rotate clockwise (rightward in the figure), the outer periphery 12 a presses the needle member 13 in the direction of arrow E, and a frictional force in the direction F is generated between the outer periphery 12 a and the needle member 13. Further, the needle member 13 receives a reaction force in the direction of arrow G from the inner wall surface 15, and a frictional force in the direction J is generated between the needle member 13 and the inner wall surface 15. Therefore, the output shaft portion 12 cannot be rotated any more and is locked. For this reason, the driving force from the output shaft portion 12 is not transmitted to the input shaft portion 11.

また、図１７は本発明の双方向クラッチのロック状態を示す説明図である。出力軸部１２が反時計方向（図中左方向）に回転しようとした場合、その外周辺１２ａがニードル部材１３を内壁面１５に押圧し、ニードル部材１３との間に摩擦力が生じる。また、ニードル部材１３は、内壁面１５からの反力を受ける。したがって、出力軸部１２はそれ以上回転することができず、ロックされて入力軸部１１に伝達されることがない。
以上のように、出力軸部１２は、左右いずれの方向にも回転して、動力を伝達することができない。 Moreover, FIG. 17 is explanatory drawing which shows the locked state of the bidirectional clutch of this invention. When the output shaft portion 12 attempts to rotate counterclockwise (leftward in the figure), the outer periphery 12 a presses the needle member 13 against the inner wall surface 15, and a frictional force is generated between the output shaft portion 12 and the needle member 13. Further, the needle member 13 receives a reaction force from the inner wall surface 15. Therefore, the output shaft portion 12 cannot rotate any more, and is not locked and transmitted to the input shaft portion 11.
As described above, the output shaft portion 12 rotates in either the left or right direction and cannot transmit power.

図１８は、本発明の双方向クラッチの他の実施形態を示す分解斜視図、図１９はその断面図、図２０は、その要部断面図である。本実施の形態において、ハウジング部材２５の内側に金属スリーブ２６が装着されており、第１の実施形態における内壁面１５は、金属スリーブ２６の内壁面２７である。それ以外の部品は、第１の実施形態と同一であるので、同一番号を付して説明を省略する。   18 is an exploded perspective view showing another embodiment of the bidirectional clutch of the present invention, FIG. 19 is a cross-sectional view thereof, and FIG. 20 is a cross-sectional view of an essential part thereof. In the present embodiment, a metal sleeve 26 is mounted inside the housing member 25, and the inner wall surface 15 in the first embodiment is an inner wall surface 27 of the metal sleeve 26. Since other parts are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

金属スリーブ２６は、図２１、２２に示すように筒状部２６ａとフランジ部２６ｂとから構成されており、筒状部２６ａには内壁面２７が形成されており、フランジ部２６ｂには位置決め用切り欠き２６ｃが形成されている。   As shown in FIGS. 21 and 22, the metal sleeve 26 includes a cylindrical portion 26a and a flange portion 26b. An inner wall surface 27 is formed on the cylindrical portion 26a, and a positioning portion is provided on the flange portion 26b. A notch 26c is formed.

図２３は、本発明の双方向クラッチに使用されるハウジング部材の右側面図、図２４は、図２３のＤ−Ｄ線断面図である。ハウジング部材２５は、金属スリーブ２６を収納するための収納凹部２５ａとフランジ部１９を収納するためのフランジ収納部２５ｂを有している。また、収納凹部２５ａには、位置決め突起２８と出力軸部１２の挿通される出力孔２９が形成されている。更に、フランジ収納部２５ｂには、スリット３０と開口端内周に係止爪３１が形成されている。   FIG. 23 is a right side view of a housing member used for the bidirectional clutch of the present invention, and FIG. 24 is a sectional view taken along the line DD of FIG. The housing member 25 has a housing recess 25 a for housing the metal sleeve 26 and a flange housing portion 25 b for housing the flange portion 19. Further, an output hole 29 through which the positioning protrusion 28 and the output shaft portion 12 are inserted is formed in the storage recess 25a. Furthermore, the latching claw 31 is formed in the flange accommodating part 25b at the slit 30 and the inner periphery of the opening end.

以上のように構成された双方向クラッチは、合成樹脂製のハウジング部材２５に金属スリーブ２６を装着した後、ニードル部材１３及び作動片１６を装着することにより入力軸部１１のフランジ部１９は、ハウジング部材２５の係止爪３１で係止される。また、ハウジング部材２５に装着した金属スリーブ２６の内壁面２７にニードル部材１３及び作動片１６が接触して駆動されるので、クラッチの耐久性を向上することができる。   In the bidirectional clutch configured as described above, the flange portion 19 of the input shaft portion 11 is attached by attaching the needle member 13 and the operating piece 16 after the metal sleeve 26 is attached to the housing member 25 made of synthetic resin. The housing member 25 is locked by the locking claw 31. Further, since the needle member 13 and the actuating piece 16 are driven in contact with the inner wall surface 27 of the metal sleeve 26 attached to the housing member 25, the durability of the clutch can be improved.

更に、本発明は上述の実施例に限定されることなく、特許請求の範囲の記載に基づいて種々の設計変更が可能である。   Furthermore, the present invention is not limited to the above-described embodiments, and various design changes can be made based on the description of the scope of claims.

１０ 双方向クラッチ
１１ 入力軸部
１２ 出力軸部
１２ａ 外周辺
１３ ニードル部材
１４ ハウジング部材
１５ 内壁面
１６ 作動片
１６ａ 対向する部位
１７ 接続孔
１８ 軸
１９ フランジ部
２０ 先端片
２１ 凸形部
２１ａ 対向する面
２２ 円筒部
２２ａ 円筒状突起
２３ フランジ収納部
２３ａ 係止爪
２３ｂ スリット
２４ 出力孔
２５ ハウジング部材
２５ａ 収納凹部
２５ｂ フランジ収納部
２６ 金属スリーブ
２６ａ 筒状部
２６ｂ フランジ部
２６ｃ 切り欠き
２７ 内壁面
２８ 位置決め突起
２９ 出力孔
３０ スリット
３１ 係止爪 DESCRIPTION OF SYMBOLS 10 Bidirectional clutch 11 Input shaft part 12 Output shaft part 12a Outer periphery 13 Needle member 14 Housing member 15 Inner wall surface 16 Actuation piece 16a Opposing part 17 Connection hole 18 Shaft 19 Flange part 20 Tip piece 21 Convex part 21a Opposing surface 22 cylindrical portion 22a cylindrical projection 23 flange housing portion 23a locking claw 23b slit 24 output hole 25 housing member 25a housing recess 25b flange housing portion 26 metal sleeve 26a cylindrical portion 26b flange portion 26c notch 27 inner wall surface 28 positioning projection 29 Output hole 30 Slit 31 Locking claw

Claims (6)

入力軸部と出力軸部とニードル部材と、これらを回動可能に収納するハウジング部材とを備え、前記入力軸部からの回転駆動力は前記出力軸部に伝達され、前記出力軸部からの回転駆動力は前記入力軸部に伝達されない双方向クラッチにおいて、
前記ハウジング部材は円筒状の内壁面を有するとともに、前記入力軸部は、端面から出力軸部方向に延びる複数の作動片を有し、前記作動片と前記円筒状の内壁面の間であって、互いに隣り合う前記作動片の間に前記ニードル部材が備えられており、前記出力軸部は断面が正多角形に形成された被出力軸部側のシャフトであることを特徴とする双方向クラッチ。 An input shaft portion, an output shaft portion, a needle member, and a housing member that rotatably accommodates the input shaft portion; a rotational driving force from the input shaft portion is transmitted to the output shaft portion; In the bidirectional clutch in which the rotational driving force is not transmitted to the input shaft portion,
The housing member has a cylindrical inner wall surface, and the input shaft portion has a plurality of operating pieces extending from an end surface in the direction of the output shaft portion, and is between the operating piece and the cylindrical inner wall surface. The bidirectional clutch is characterized in that the needle member is provided between the operation pieces adjacent to each other, and the output shaft portion is a shaft on the output shaft portion side having a regular polygonal cross section. . 前記入力軸部の作動片は、前記内壁面に対向する側面が左右の回転方向に延設されて先端片となり、
前記入力軸部が左右いずれの方向に回転しても、前記先端片がニードル部材を介して出力軸部を回転駆動することを特徴とする請求項１に記載の双方向クラッチ。 The operating piece of the input shaft portion is a tip piece with a side surface facing the inner wall surface extending in the left-right rotation direction,
2. The bidirectional clutch according to claim 1, wherein the tip piece rotationally drives the output shaft portion via a needle member even if the input shaft portion rotates in either the left or right direction. 前記入力軸部の複数の作動片は、ハウジング部材の中心軸方向に延設された凸形部を有し、互いに隣り合う凸形部先端の間の距離寸法が前記ニードル部材の外径寸法より小さく構成されたことを特徴とする請求項１または２に記載の双方向クラッチ。   The plurality of operating pieces of the input shaft portion have a convex portion extending in the direction of the central axis of the housing member, and the distance between the adjacent convex portions is larger than the outer diameter of the needle member. The bidirectional clutch according to claim 1, wherein the bidirectional clutch is configured to be small. 前記凸形部の出力軸部に対向する面が円弧状に形成されたことを特徴とする請求項１から請求項３の何れか１項に記載の双方向クラッチ。   The bidirectional clutch according to any one of claims 1 to 3, wherein a surface of the convex portion facing the output shaft portion is formed in an arc shape. 前記入力軸部の作動片は、左右の前記ニードル部材に対向する部位に凹状に形成が設けられていることを特徴とする請求項１から請求項４の何れか１項に記載の双方向クラッチ。   The bidirectional clutch according to any one of claims 1 to 4, wherein the operation piece of the input shaft portion is formed in a concave shape in a portion facing the left and right needle members. . 前記ハウジング部材の内壁面は、ハウジング部材に装着された金属スリーブの内壁面であることを特徴とする請求項１から請求項５の何れか１項に記載の双方向クラッチ。   The bidirectional clutch according to any one of claims 1 to 5, wherein the inner wall surface of the housing member is an inner wall surface of a metal sleeve mounted on the housing member.
JP2011086161A 2011-04-08 2011-04-08 Bi-directional clutch Pending JP2012219910A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011086161A JP2012219910A (en) 2011-04-08 2011-04-08 Bi-directional clutch
PCT/JP2012/059243 WO2012137841A1 (en) 2011-04-08 2012-04-04 Bi-directional clutch

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JP2011086161A JP2012219910A (en) 2011-04-08 2011-04-08 Bi-directional clutch

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017110793A (en) * 2015-12-18 2017-06-22 喬紳股▲ふん▼有限公司 Hub ratchet structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07103260A (en) * 1993-09-30 1995-04-18 Alpha Supply Kk One-way clutch device
US20010037924A1 (en) * 2000-05-05 2001-11-08 Samar Systems Limited Rotary coupling
JP2008082458A (en) * 2006-09-28 2008-04-10 Jtekt Corp One-way clutch with torque limiter
JP2010276166A (en) * 2009-05-29 2010-12-09 Jtekt Corp Reverse input cutoff clutch, transmission ratio variable mechanism, and steering device for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07103260A (en) * 1993-09-30 1995-04-18 Alpha Supply Kk One-way clutch device
US20010037924A1 (en) * 2000-05-05 2001-11-08 Samar Systems Limited Rotary coupling
JP2008082458A (en) * 2006-09-28 2008-04-10 Jtekt Corp One-way clutch with torque limiter
JP2010276166A (en) * 2009-05-29 2010-12-09 Jtekt Corp Reverse input cutoff clutch, transmission ratio variable mechanism, and steering device for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017110793A (en) * 2015-12-18 2017-06-22 喬紳股▲ふん▼有限公司 Hub ratchet structure

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