JP3191041U - Shaft coupling - Google Patents

Shaft coupling Download PDF

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JP3191041U
JP3191041U JP2014001500U JP2014001500U JP3191041U JP 3191041 U JP3191041 U JP 3191041U JP 2014001500 U JP2014001500 U JP 2014001500U JP 2014001500 U JP2014001500 U JP 2014001500U JP 3191041 U JP3191041 U JP 3191041U
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shaft coupling
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diameter shaft
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酒井　隆行
隆行 酒井
雅徳 奥山
雅徳 奥山
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株式会社酒井製作所
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Abstract

【課題】大きさが異なる２つの連結部を結合可能とし、回転方向の慣性モーメントを大幅に低減させた軸継手を提供する。【解決手段】大径軸連結部と小径軸連結部と回転力伝動部とを備える軸継手であって、大径軸連結部Ａは大径軸用ハブ部２を備える円筒体であり、小径軸連結部Ｂは小径軸用ハブ部９を備え、かつ大径軸連結部より外径と内径がともに小さい円筒体であり、回転力伝動部Ｃは、大径軸連結部側接続部１３ａと小径軸連結部側接続部１３ｃとを有するスペーサー１３と、大径環状板ばね１１と小径環状板ばね１２とからなり、締結部材１９により大径軸連結部と大径環状板ばねを連結し、締結部材２１により大径軸連結部側接続部と大径環状板ばねを連結し、締結部材２０で小径軸連結部と小径環状板ばねを連結し、締結部材２２で小径軸連結部側接続部と小径環状板ばねを連結した。【選択図】図１PROBLEM TO BE SOLVED: To provide a shaft joint capable of connecting two connecting portions having different sizes and significantly reducing the moment of inertia in the rotational direction. SOLUTION: The shaft joint includes a large-diameter shaft connecting portion, a small-diameter shaft connecting portion, and a rotational force transmission portion, and the large-diameter shaft connecting portion A is a cylindrical body including a large-diameter shaft hub portion 2 and has a small diameter. The shaft connecting portion B is a cylindrical body provided with a hub portion 9 for a small diameter shaft and has an outer diameter and an inner diameter smaller than those of the large diameter shaft connecting portion. It is composed of a spacer 13 having a small-diameter shaft connecting portion side connecting portion 13c, a large-diameter annular leaf spring 11 and a small-diameter annular leaf spring 12, and a large-diameter shaft connecting portion and a large-diameter annular leaf spring are connected by a fastening member 19. The fastening member 21 connects the large-diameter shaft connecting portion side connection portion and the large-diameter annular leaf spring, the fastening member 20 connects the small-diameter shaft connecting portion and the small-diameter annular leaf spring, and the fastening member 22 connects the small-diameter shaft connecting portion side connecting portion. And a small diameter annular leaf spring were connected. [Selection diagram] Fig. 1

Description

本考案は、大径の連結部と小径の連結部とを結合することにより、慣性モーメントを小さくした軸継手に関するものある。   The present invention relates to a shaft coupling in which a moment of inertia is reduced by connecting a connecting portion having a large diameter and a connecting portion having a small diameter.

従来の軸継手に対する主な性能上の要求は、高トルク・高鋼性のものであるが、一方で大きな伝動トルクを必要としないが、低慣性を重視した軸継手も要望されている。例えば、モーターとエンコーダーの繋ぎに使用する軸継手は、過大な慣性モーメントが作用すると、エンコーダーの精度に悪影響を与え、また、軸継手に作用する負荷トルクはエンコーダーの慣性による起動および停動トルクのみとなることから、高トルク・高鋼性である必要はなく、慣性モーメントを小さくすることが重要になる。   The main performance requirements for conventional shaft couplings are high torque and high steel, but on the other hand, a large coupling torque is not required, but shaft couplings that emphasize low inertia are also desired. For example, the shaft coupling used to connect the motor and encoder will adversely affect the accuracy of the encoder if an excessive moment of inertia acts, and the load torque acting on the shaft coupling is only the starting and stopping torque due to the inertia of the encoder. Therefore, it is not necessary to have high torque and high steel properties, and it is important to reduce the moment of inertia.

従来より、軸継手において慣性モーメントを小さくしたものがある。例えば、 特開２００４−１１６５５（「たわみ軸継手」：特許文献１）の発明には、たわみ軸継手が１組の継手本体と数個のリーマボルトなどの締結部材により、数少ない部品で構成されているので、質量を小さくすることができ、また、構造上継手本体の外径が小さくなるので、慣性モーメントを小さくすることができるとの記載がある。
特開２００１−３４９３３５（「フレキシブル継手」：特許文献２）の発明には、継手本体を軽量な非鉄部材により形成し、軽量化を図り慣性モーメントを小さくし、また、締付部材を継手本体よりも耐力／密度の大きい部材とすることにより、慣性モーメントを更に小さくしたフレキシブル継手が開示されている。
また、特開平９−３２８６３：（「リンク式軸継手」：特許文献４）の発明には、入力回転部材、中間回転部材、出力回転部材の肉厚を薄くできるので、慣性モーメントが小さいリンク式軸継手となると記載されている。 Conventionally, there are shaft couplings with a reduced moment of inertia. For example, in the invention of Japanese Patent Application Laid-Open No. 2004-11655 ("flexible shaft coupling": Patent Document 1), a flexible shaft coupling is composed of a small number of parts by a set of coupling bodies and several fastening members such as reamer bolts. Therefore, there is a description that the mass can be reduced, and the outer diameter of the joint body is structurally reduced, so that the moment of inertia can be reduced.
In the invention of Japanese Patent Application Laid-Open No. 2001-349335 ("flexible joint": Patent Document 2), the joint body is formed of a lightweight non-ferrous member, the weight is reduced to reduce the moment of inertia, and the fastening member is made from the joint body. However, a flexible joint is disclosed in which the moment of inertia is further reduced by using a member having a high yield strength / density.
Further, in the invention of Japanese Patent Laid-Open No. 9-32863: ("Linked shaft coupling": Patent Document 4), the thickness of the input rotating member, the intermediate rotating member, and the output rotating member can be reduced, so that the link type with a small moment of inertia. It is described as a shaft coupling.

さらに、従来の軸継手においては、モーターの駆動軸と、前記モーターの回転力を付与される対象負荷の従動軸との軸径が異なる場合、従来例として図１５に示すように、モーターの駆動軸を挿入固定する大径軸連結部Ａ’と従動軸を挿入固定する小径軸連結部Ｂ’は、外径が同じ大きさで、小径の軸を挿入する小径軸挿入孔８’の径を駆動軸を挿入する駆動軸挿入孔１’より小さくしたり、または、従来例の異なる実施例として図１６に示すように、小径軸連結部Ｂ’の小径の軸を挿入固定する小径軸用ハブ部９’の部分の外径のみを小さくする方法が採用されている。   Furthermore, in the conventional shaft coupling, when the shaft diameters of the motor drive shaft and the driven shaft of the target load to which the rotational force of the motor is applied are different as shown in FIG. The large-diameter shaft coupling portion A ′ for inserting and fixing the shaft and the small-diameter shaft coupling portion B ′ for inserting and fixing the driven shaft have the same outer diameter and the diameter of the small-diameter shaft insertion hole 8 ′ for inserting the small-diameter shaft. Small-diameter shaft hub for inserting and fixing the small-diameter shaft of the small-diameter shaft coupling portion B ′ as shown in FIG. 16 as an embodiment different from the conventional example. A method of reducing only the outer diameter of the portion 9 ′ is employed.

特開２００４−１１６５５JP 2004-11655 A 特開２００１−３４９３３５JP 2001-349335 A 特開平９−３２８６３JP-A-9-32863

しかしながら、前記特許文献１〜３に開示された軸継手は、軸継手の１組の継手本体の外径が共に同じ大きさであって共に外径を小さくしたり、また、継手本体を軽量な非鉄部材により形成したり、軸継手をコンパクトにし部品を少なくしたり、さらに、入力回転部材、中間回転部材、出力回転部材の肉厚を薄くすること等により、軽量化と慣性モーメントの低減を図るものであるが、いずれもモーター等と連結し回転力を付与する側である大径軸連結部と、対象負荷と連結し回転力を付与される側である小径軸連結部は、同じ大きさのものしか結合することができなかった。
よって、回転力を付与される対象負荷によって、対象負荷の小径の軸と前記モーター等の大径の軸との軸径に大きな差がある場合、また、軸継手を軽量化する必要がある場合等に、小径の軸と連結する小径軸連結部として小型で外径が小さいものを使用したくても、回転力を付与する側である大径軸連結部と大きさが異なるため両者を結合することができず、軽量で低慣性の軸継手を提供することができないという問題点があり、また、対象負荷に対応した大きさの異なる色々な小径軸連結部を使用したくても、前記大径軸連結部に自在に結合することができないという問題点があった。 However, in the shaft joints disclosed in Patent Documents 1 to 3, the outer diameters of a pair of joint bodies of the shaft joint are both the same size, and both the outer diameters are reduced. By reducing the thickness of the input rotating member, intermediate rotating member, and output rotating member by using non-ferrous members, reducing the number of parts by making the shaft coupling compact, and reducing the moment of inertia However, the large-diameter shaft coupling portion, which is the side that is connected to a motor or the like and imparts rotational force, and the small-diameter shaft coupling portion that is the side that is coupled to the target load and imparted rotational force are the same size. Only the ones could be combined.
Therefore, when there is a large difference in the shaft diameter between the small-diameter shaft of the target load and the large-diameter shaft such as the motor, depending on the target load to which the rotational force is applied, and when it is necessary to reduce the weight of the shaft coupling Even if you want to use a small-diameter shaft coupling part that is small and has a small outer diameter to connect to a small-diameter shaft, the size is different from that of the large-diameter shaft coupling part on the side where the rotational force is applied. And there is a problem that a light weight and low inertia shaft coupling cannot be provided, and even if it is desired to use various small-diameter shaft coupling parts having different sizes corresponding to the target load, There was a problem that the large-diameter shaft connecting portion could not be freely coupled.

本考案の目的は、上記問題点に鑑み、モーター等の大径の軸と連結する大径連結部と、エンコーダー等の対象負荷の小径の軸と連結する小径軸連結部と、前記大径軸連結部と前記小径軸連結部との間に配置される回転力伝動部からなる軸継手において、前記大径軸連結部の大きさと前記小径軸連結部の大きさが異なる２つの連結部を結合可能とし、前記小径軸連結部に連結される対象負荷の種類に対応して小型軽量化した小径軸連結部の使用を可能とし、また、前記回転力伝動部を構成する環状板ばねの小型化及び軽量化と、スペーサーの軽量化を行い、軸継手全体の回転方向の慣性モーメントを大幅に低減させた軸継手を提供することを目的としている。   In view of the above problems, an object of the present invention is to provide a large-diameter coupling portion coupled to a large-diameter shaft such as a motor, a small-diameter shaft coupling portion coupled to a small-diameter shaft of a target load such as an encoder, and the large-diameter shaft. In a shaft coupling composed of a rotational force transmission portion disposed between a connecting portion and the small diameter shaft connecting portion, two connecting portions having different sizes of the large diameter shaft connecting portion and the small diameter shaft connecting portion are combined. It is possible to use a small-diameter shaft coupling portion that is reduced in size and weight in accordance with the type of target load coupled to the small-diameter shaft coupling portion, and to reduce the size of the annular leaf spring that constitutes the rotational force transmission portion. The purpose of the present invention is to provide a shaft coupling in which the weight of the spacer and the spacer are reduced, and the moment of inertia in the rotational direction of the entire shaft coupling is greatly reduced.

さらに、軸継手を一層軽量化するため、小径軸連結部の外径を大径軸連結部の外径より小さなものを使用可能とするだけでなく、大径軸連結部及び小径軸連結部外径における外内径の差を極力小さくして、大径軸連結部及び小径軸連結部を軽量化し、軸継手全体の慣性モーメントを低減した軸継手を提供することを目的とし、また、対象負荷の種類に対応した小径軸連結部に取り替えても、回転力伝動部を取り替えることにより、前記小径軸連結部を前記大径軸連結部に容易に結合可能とした軸継手を提供することを目的としている。   Furthermore, in order to further reduce the weight of the shaft coupling, not only can the outer diameter of the small-diameter shaft coupling portion be smaller than the outer diameter of the large-diameter shaft coupling portion, but also the outside of the large-diameter shaft coupling portion and the small-diameter shaft coupling portion. The purpose of this invention is to provide a shaft coupling that reduces the moment of inertia of the entire shaft coupling by reducing the difference between the outer and inner diameters of the shaft as much as possible, reducing the weight of the large-diameter shaft coupling portion and the small-diameter shaft coupling portion. An object is to provide a shaft coupling that can be easily coupled to the large-diameter shaft coupling portion by replacing the rotational force transmission portion even if the small-diameter shaft coupling portion corresponding to the type is replaced. Yes.

上記目的を達成するものは、以下のものである。
（１）大径の軸と連結するための大径軸連結部と、前記大径の軸より小径の軸と連結するための小径軸連結部と、前記大径軸連結部と前記小径軸連結部との間に配置され、一方の前記連結部に付与される回転力を他方の前記連結部に伝動するための回転力伝動部とを備える軸継手であって、
前記大径軸連結部は、前記大径の軸を挿入固定する大径軸用ハブ部を備える大径円筒体であり、前記小径軸連結部は、前記小径の軸を挿入固定する小径軸用ハブ部を備え、かつ、前記大径軸連結部より外径および内径がともに小さい小径円筒体であり、
前記回転力伝動部は、前記大径軸連結部の形状に対応した外径を有する短い筒状の大径軸連結部側接続部と、前記小径軸連結部の形状に対応した外径を有する短い筒状の小径軸連結部側接続部とを有するスペーサーと、前記大径軸連結部と前記スペーサーの前記大径軸連結部側接続部間に配置されかつ前記大径軸連結部の形状に対応した形状を有する大径環状板ばねと、前記小径軸連結部と前記スペーサーの前記小径軸連結部側接続部間に配置されかつ前記小径軸連結部の形状に対応した形状を有する小径環状板ばねと、前記大径軸連結部と前記大径環状板ばねを連結する大径側連結部板ばね間締結部材と、前記スペーサーの前記大径軸連結部側接続部と前記大径環状板ばねを連結する大径側スペーサー板ばね間締結部材と、前記小径軸連結部と前記小径環状板ばねを連結する小径側連結部板ばね間締結部材と、前記スペーサーの前記小径軸連結部側接続部と前記小径環状板ばねを連結する小径側スペーサー板ばね間締結部材とを備えることを特徴とする軸継手。 What achieves the above object is as follows.
(1) A large-diameter shaft coupling portion for coupling with a large-diameter shaft, a small-diameter shaft coupling portion for coupling with a smaller-diameter shaft than the large-diameter shaft, the large-diameter shaft coupling portion and the small-diameter shaft coupling. A shaft coupling provided with a rotational force transmission portion disposed between the rotational portion and a rotational force applied to one of the coupling portions to transmit the rotational force to the other coupling portion;
The large-diameter shaft coupling portion is a large-diameter cylindrical body having a large-diameter shaft hub portion for inserting and fixing the large-diameter shaft, and the small-diameter shaft coupling portion is for a small-diameter shaft for inserting and fixing the small-diameter shaft. A small-diameter cylindrical body having a hub portion and having both an outer diameter and an inner diameter smaller than those of the large-diameter shaft coupling portion,
The rotational force transmission portion has a short cylindrical large-diameter shaft coupling portion side connection portion having an outer diameter corresponding to the shape of the large-diameter shaft coupling portion, and an outer diameter corresponding to the shape of the small-diameter shaft coupling portion. A spacer having a short cylindrical small-diameter shaft coupling portion side connection portion, and is disposed between the large-diameter shaft coupling portion and the large-diameter shaft coupling portion-side connection portion of the spacer and in the shape of the large-diameter shaft coupling portion. A large-diameter annular leaf spring having a corresponding shape, and a small-diameter annular plate disposed between the small-diameter shaft coupling portion and the small-diameter shaft coupling portion-side connecting portion of the spacer and having a shape corresponding to the shape of the small-diameter shaft coupling portion A spring, a large-diameter-side coupling portion plate spring fastening member that couples the large-diameter shaft coupling portion and the large-diameter annular leaf spring, the large-diameter shaft coupling portion-side connection portion of the spacer, and the large-diameter annular leaf spring The large-diameter side spacer leaf spring fastening member for coupling the small-diameter shaft coupling And a small-diameter-side coupling leaf spring fastening member that couples the small-diameter annular leaf spring, and a small-diameter spacer leaf spring fastening member that couples the small-diameter shaft coupling portion-side connection portion of the spacer and the small-diameter annular leaf spring. A shaft coupling comprising:

（２）前記大径環状板ばねは、向かい合う前記大径軸連結部の端面と前記スペーサーの前記大径軸連結部側接続部の端面間に収納され、前記大径環状板ばねは、外縁および内縁が実質的に露出しないものとなっており、前記小径環状板ばねは、向かい合う前記小径軸連結部の端面と前記スペーサーの前記小径軸連結部側接続部の端面間に収納され、前記小径環状板ばねは、外縁および内縁が実質的に露出しないものとなっている前記（１）に記載の軸継手。 (2) The large-diameter annular leaf spring is housed between an end surface of the large-diameter shaft coupling portion and an end surface of the spacer on the large-diameter shaft coupling portion side, and the large-diameter annular leaf spring includes an outer edge and The inner edge is not substantially exposed, and the small-diameter annular leaf spring is housed between the end surface of the small-diameter shaft coupling portion and the end surface of the small-diameter shaft coupling portion side connection portion of the spacer, The leaf spring according to (1), wherein the outer edge and the inner edge are not substantially exposed.

（３）前記大径軸連結部の前記大径軸用ハブ部は、内径が外径の（６５／１００〜７５／１００）である外内径差の少ない円筒体である前記（１）または（２）に記載の軸継手。
（４）前記大径軸連結部は、駆動軸連結部であり、前記小径軸連結部は、従動軸連結部である前記（１）ないし（３）のいずれかに記載の軸継手。 (3) The large-diameter shaft hub portion of the large-diameter shaft coupling portion is a cylindrical body with a small outer-internal-diameter difference (65/100 to 75/100) having an inner diameter of (65/100 to 75/100). The shaft coupling according to 2).
(4) The shaft coupling according to any one of (1) to (3), wherein the large-diameter shaft coupling portion is a drive shaft coupling portion, and the small-diameter shaft coupling portion is a driven shaft coupling portion.

（５）前記環状板ばねは、外形が四辺から成り各辺が外側に円弧状に膨出した形状の四角形であり、四角形の各頂部が前記連結部の端面の外周から突出しない大きさであり、前記環状板ばねの内径は、前記ハブ部の内径より大きくした前記（１）ないし（４）のいずれかに記載の軸継手。 (5) The annular leaf spring is a quadrangle whose outer shape is formed by four sides and each side bulges outward in an arc shape, and each apex of the quadrangle is a size that does not protrude from the outer periphery of the end face of the connecting portion. The shaft coupling according to any one of (1) to (4), wherein an inner diameter of the annular leaf spring is larger than an inner diameter of the hub portion.

（６）前記回転力伝動部のスペーサーは、同じ中心軸を有し、かつ外径の異なる２つの円筒部を有する一体物であり、さらに、前記スペーサーの前記大径軸連結部側接続部の外径と前記大径軸連結部の外径と前記大径環状板ばねの最大外径部における直径はほぼ等しいものとなっており、前記スペーサーの前記小径軸連結部側接続部の外径と前記小径軸連結部の外径と前記小径環状板ばねの最大外径部における直径はほぼ等しいものとなっている前記（１）ないし（５）のいずれかに記載の軸継手。 (6) The spacer of the rotational force transmission portion is an integral body having two cylindrical portions having the same central axis and different outer diameters, and further, the connecting portion on the large-diameter shaft coupling portion side of the spacer. The outer diameter, the outer diameter of the large-diameter shaft coupling portion, and the diameter of the largest annular leaf spring at the maximum outer diameter portion are substantially equal, and the outer diameter of the small-diameter shaft coupling portion side connection portion of the spacer The shaft coupling according to any one of (1) to (5), wherein an outer diameter of the small-diameter shaft coupling portion and a diameter at a maximum outer diameter portion of the small-diameter annular leaf spring are substantially equal.

（７）前記回転力伝動部のスペーサーは、同じ中心軸を有し、かつ外径の異なる２つの円筒部を有する一体物であり、さらに、前記大径軸連結部の内径は、前記大径環状板ばねの内径より小さく、前記スペーサーの前記大径軸連結部側接続部の内径は、前記大径軸連結部の内径より大きいものとなっており、前記小径軸連結部の内径は、前記小径環状板ばねの内径より小さく、前記スペーサーの前記小径軸連結部側接続部の内径は、前記小径軸連結部の内径より大きいものとなっている前記（１）ないし（６）のいずれかに記載の軸継手。 (7) The spacer of the rotational force transmission portion is an integral body having two cylindrical portions having the same central axis and different outer diameters, and the inner diameter of the large-diameter shaft coupling portion is the large diameter. Smaller than the inner diameter of the annular leaf spring, the inner diameter of the connecting portion on the large-diameter shaft coupling portion side of the spacer is larger than the inner diameter of the large- diameter shaft coupling portion, and the inner diameter of the small-diameter shaft coupling portion is The inner diameter of the small-diameter shaft coupling portion side connection portion of the spacer is smaller than the inner diameter of the small-diameter annular leaf spring, and is larger than the inner diameter of the small-diameter shaft coupling portion. The shaft coupling described.

（８）前記回転力伝動部のスペーサーは、前記大径軸連結部側接続部と前記小径軸連結部側接続部間に設けられ、前記大径軸連結部側接続部の外径より小さく前記小径軸連結部側接続部の外径より大きい１また複数の円盤状段部を備えている前記（１）ないし（７）のいずれかに記載の軸継手。 (8) The spacer of the rotational force transmission part is provided between the large diameter shaft coupling part side connection part and the small diameter shaft coupling part side connection part, and is smaller than the outer diameter of the large diameter shaft coupling part side connection part. The shaft coupling according to any one of (1) to (7), further including one or a plurality of disk-shaped step portions larger than an outer diameter of the small-diameter shaft coupling portion side connection portion.

（９）大径の軸と連結するための大径軸連結部と、前記大径の軸より小径の軸と連結するための小径軸連結部と、前記大径軸連結部と前記小径軸連結部との間に配置され、一方の前記連結部に付与される回転力を他方の前記連結部に伝動するための回転力伝動部とを備える軸継手であって、
前記大径軸連結部は、前記大径の軸を挿入固定する大径軸用ハブ部を備える大径円筒体であり、前記小径軸連結部は、前記小径の軸を挿入固定する小径軸用ハブ部を備え、かつ、前記大径軸連結部より外径および内径がともに小さい小径円筒体であり、
前記回転力伝動部は、前記大径軸連結部の形状に対応した外径を有する短い筒状の大径軸連結部側接続部と、前記小径軸連結部の形状に対応した外径を有する短い筒状の小径軸連結部側接続部とを有するスペーサーと、前記大径軸連結部と前記スペーサーの前記大径軸連結部側接続部間に配置されかつ前記大径軸連結部の形状に対応した形状を有する大径環状板ばねと、前記小径軸連結部と前記スペーサーの前記小径軸連結部側接続部間に配置されかつ前記小径軸連結部の形状に対応した形状を有する小径環状板ばねと、前記大径軸連結部と前記大径環状板ばねを連結する大径側連結部板ばね間締結部材と、前記スペーサーの前記大径軸連結部側接続部と前記大径環状板ばねを連結する大径側スペーサー板ばね間締結部材と、前記小径軸連結部と前記小径環状板ばねを連結する小径側連結部板ばね間締結部材と、前記スペーサーの前記小径軸連結部側接続部と前記小径環状板ばねを連結する小径側スペーサー板ばね間締結部材とを備え、
前記大径環状板ばねは、向かい合う前記大径軸連結部の端面と前記スペーサーの前記大径軸連結部側接続部の端面間に収納され、前記小径環状板ばねは、向かい合う前記小径軸連結部の端面と前記スペーサーの前記小径軸連結部側接続部の端面間に収納されており、前記回転力伝動部のスペーサーは、同じ中心軸を有し、かつ外径の異なる２つの円筒部を有する一体物であることを特徴とする軸継手。 (9) A large-diameter shaft coupling portion for coupling with a large-diameter shaft, a small-diameter shaft coupling portion for coupling with a smaller-diameter shaft than the large-diameter shaft, the large-diameter shaft coupling portion and the small-diameter shaft coupling. A shaft coupling provided with a rotational force transmission portion disposed between the rotational portion and a rotational force applied to one of the coupling portions to transmit the rotational force to the other coupling portion;
The large-diameter shaft coupling portion is a large-diameter cylindrical body having a large-diameter shaft hub portion for inserting and fixing the large-diameter shaft, and the small-diameter shaft coupling portion is for a small-diameter shaft for inserting and fixing the small-diameter shaft. A small-diameter cylindrical body having a hub portion and having both an outer diameter and an inner diameter smaller than those of the large-diameter shaft coupling portion,
The rotational force transmission portion has a short cylindrical large-diameter shaft coupling portion side connection portion having an outer diameter corresponding to the shape of the large-diameter shaft coupling portion, and an outer diameter corresponding to the shape of the small-diameter shaft coupling portion. A spacer having a short cylindrical small-diameter shaft coupling portion side connection portion, and is disposed between the large-diameter shaft coupling portion and the large-diameter shaft coupling portion-side connection portion of the spacer and in the shape of the large-diameter shaft coupling portion. A large-diameter annular leaf spring having a corresponding shape, and a small-diameter annular plate disposed between the small-diameter shaft coupling portion and the small-diameter shaft coupling portion-side connecting portion of the spacer and having a shape corresponding to the shape of the small-diameter shaft coupling portion A spring, a large-diameter-side coupling portion plate spring fastening member that couples the large-diameter shaft coupling portion and the large-diameter annular leaf spring, the large-diameter shaft coupling portion-side connection portion of the spacer, and the large-diameter annular leaf spring The large-diameter side spacer leaf spring fastening member for coupling the small-diameter shaft coupling And a small-diameter-side coupling leaf spring fastening member that couples the small-diameter annular leaf spring, and a small-diameter spacer leaf spring fastening member that couples the small-diameter shaft coupling portion-side connection portion of the spacer and the small-diameter annular leaf spring. Prepared,
The large-diameter annular leaf spring is housed between an end surface of the large-diameter shaft coupling portion facing the end surface of the spacer on the large-diameter shaft coupling portion side connection portion, and the small-diameter annular leaf spring is opposed to the small-diameter shaft coupling portion facing each other. And the spacer of the rotational force transmission portion has two cylindrical portions having the same central axis and different outer diameters. A shaft coupling characterized by being a one-piece.

（１０） 前記大径環状板ばねは、外縁および内縁が実質的に露出しないものとなっており、前記小径環状板ばねは、外縁および内縁が実質的に露出しないものとなっている前記（９）に記載の軸継手。 (10) In the large-diameter annular leaf spring, the outer edge and the inner edge are not substantially exposed, and in the small-diameter annular leaf spring, the outer edge and the inner edge are not substantially exposed (9 ) Shaft coupling.

（１１） 前記スペーサーの前記大径軸連結部側接続部の内径は、前記大径軸連結部の内径より大きいものとなっており、前記スペーサーの前記小径軸連結部側接続部の内径は、前記小径軸連結部の内径より大きいものとなっている前記（９）または（１０）に記載の軸継手。 (11) The inner diameter of the large-diameter shaft coupling portion side connection portion of the spacer is larger than the inner diameter of the large-diameter shaft coupling portion, and the inner diameter of the small-diameter shaft coupling portion side connection portion of the spacer is The shaft coupling according to (9) or (10), which is larger than the inner diameter of the small-diameter shaft coupling portion.

（１２） 前記大径軸連結部の前記大径軸用ハブ部は、内径が外径の（６５／１００〜７５／１００）である外内径差の少ない円筒体である前記（９）ないし（１１）のいずれかに記載の軸継手。
（１３） 前記大径軸連結部は、駆動軸連結部であり、前記小径軸連結部は、従動軸連結部である前記（９）ないし（１２）のいずれかに記載の軸継手。 (12) The hub portion for the large-diameter shaft of the large-diameter shaft coupling portion is a cylindrical body having a small difference in the outer diameter (65/100 to 75/100) having an inner diameter of (65/100 to 75/100). 11) The shaft coupling according to any one of the above.
(13) The shaft coupling according to any one of (9) to (12), wherein the large-diameter shaft coupling portion is a drive shaft coupling portion, and the small-diameter shaft coupling portion is a driven shaft coupling portion.

（１４） 前記回転力伝動部のスペーサーは、前記大径軸連結部側接続部と前記小径軸連結部側接続部間に設けられ、前記大径軸連結部側接続部の外径より小さく前記小径軸連結部側接続部の外径より大きい１また複数の円盤状段部を備えている前記（９）ないし（１３）のいずれかに記載の軸継手。 (14) The spacer of the rotational force transmission part is provided between the large-diameter shaft coupling part side connection part and the small-diameter shaft coupling part side connection part, and is smaller than the outer diameter of the large-diameter shaft coupling part side connection part. The shaft coupling according to any one of (9) to (13), wherein the shaft coupling includes one or a plurality of disk-shaped step portions larger than the outer diameter of the small-diameter shaft coupling portion side connection portion.

本考案の軸継手は、大径軸連結部と小径軸連結部の大きさが異なる場合でも両者を結合することができる。よって、回転力を付与される対象負荷の軸径が小さい場合には小径軸連結部として小型・軽量のものが使用可能であり、軸継手の慣性モーメントを低減することができる。特に、軸継手の性能として高トルク・高剛性を必要としない場合であって、駆動側のモーター等の軸径に比し対象負荷の軸径が極端に小さい場合には、外径の大きい大径軸連結部と外径の小さい小径軸連結部を組み合わせて結合できるので、軸継手の慣性モーメントを大幅に低減した軸継手を提供することができる。
また、回転力伝動部を構成するスペーサーが、大径軸連結部側接続部と小径軸連結部側接続部を一体物としたものであるから、外径の小さい前記小径軸連結部側接続部とすることで軽量化ができ、さらに、回転力伝動部を構成する大径環状板ばねと小径環状板ばねにおいて、小径環状板ばねを小型のものとすることができ軽量化を図ることができる。よって、回転力伝動部自体も軽量化することができるので、軸継手全体の慣性モーメントを大幅に低減することができる。 The shaft coupling of the present invention can couple both the large-diameter shaft coupling portion and the small-diameter shaft coupling portion even when the sizes thereof are different. Therefore, when the shaft diameter of the target load to which the rotational force is applied is small, a small-sized and light-weight shaft connecting portion can be used, and the moment of inertia of the shaft coupling can be reduced. In particular, when the shaft joint performance does not require high torque and high rigidity and the shaft diameter of the target load is extremely small compared to the shaft diameter of the motor on the drive side, etc., the large outer diameter is large. Since the shaft coupling portion and the small-diameter shaft coupling portion having a small outer diameter can be combined and coupled, a shaft coupling in which the moment of inertia of the shaft coupling is greatly reduced can be provided.
In addition, since the spacer constituting the rotational force transmission part is an integral part of the large-diameter shaft connecting part side connecting part and the small-diameter shaft connecting part side connecting part, the small-diameter shaft connecting part side connecting part having a small outer diameter is used. In addition, in the large-diameter annular leaf spring and the small-diameter annular leaf spring constituting the rotational force transmission portion, the small-diameter annular leaf spring can be made small, and the weight can be reduced. . Therefore, since the rotational force transmission part itself can also be reduced in weight, the inertia moment of the whole shaft coupling can be significantly reduced.

前記大径環状板ばねは、前記大径軸連結部及び前記スペーサーの前記大径軸連結部側接続部の外縁および内縁から実質的に露出しない大きさであり、前記小径環状板ばねは、前記小径軸連結部及び前記スペーサーの前記小径軸連結部側接続部の外縁および内縁から実質的に露出しない大きさとしたから、径の大きさが異なる大径軸連結部と小径軸連結部を結合しても、環状板ばねが外方に飛び出すことがない。   The large-diameter annular leaf spring is a size that is not substantially exposed from an outer edge and an inner edge of the large-diameter shaft coupling portion side connection portion of the large-diameter shaft coupling portion and the spacer, and the small-diameter annular leaf spring is The small-diameter shaft coupling portion and the spacer have a size that is not substantially exposed from the outer edge and the inner edge of the small-diameter shaft coupling portion side connection portion. However, the annular leaf spring does not jump out.

前記大径軸連結部の前記大径軸用ハブ部は、内径が外径の（６５／１００〜７５／１００）である外内径差の少ない円筒体としたので、前記大径軸連結部の軽量化を図ることができ、慣性モーメントをさらに低減することができる。   Since the large-diameter shaft hub of the large-diameter shaft coupling portion is a cylindrical body having an inner diameter of (65/100 to 75/100) with a small outer diameter difference, The weight can be reduced and the moment of inertia can be further reduced.

前記２つの環状板ばねは、外形が四辺から成り各辺が外側に円弧状に膨出した形状の四角形であり、四角形の各頂部が前記連結部の端面の外周から突出しない大きさであり、内径が前記ハブ部の内径より大きくなっているので、前記環状板ばねの幅が小さくなり軽量化を図ることができる。   The two annular leaf springs are quadrilaterals whose outer shape consists of four sides and each side bulges outward in an arc shape, and each apex of the quadrangle is a size that does not protrude from the outer periphery of the end face of the connecting portion, Since the inner diameter is larger than the inner diameter of the hub portion, the width of the annular leaf spring is reduced and the weight can be reduced.

前記回転力伝動部のスペーサーは、１つの円盤から構成されているのではなく、前記大径軸連結部側接続部と前記小径軸連結部側接続部の外径の異なる２つの円筒部を有する一体物としたものであり、或いは、前記大径軸連結部側接続部と前記小径軸連結部側接続部との間に、前記大径軸連結部側接続部の外径より小さく前記小径軸連結部側接続部の外径より大きい１また複数の円盤状段部を備えたものであるから、前記小径軸連結部が小さいものにおいては、前記スペーサーの前記小径軸連結部側接続部も小さなものでよく、また、前記スペーサーは中心部に透孔を有する円筒形状であることから、スペーサー自体の軽量化を図ることができる。   The spacer of the rotational force transmission portion is not composed of a single disk, but has two cylindrical portions with different outer diameters of the large-diameter shaft coupling portion side connection portion and the small-diameter shaft coupling portion side connection portion. The small-diameter shaft is smaller than the outer diameter of the large-diameter shaft coupling portion-side connection portion between the large-diameter shaft coupling portion-side connection portion and the small-diameter shaft coupling portion-side connection portion. Since one or more disk-shaped step portions larger than the outer diameter of the connecting portion side connecting portion are provided, in the case where the small diameter shaft connecting portion is small, the small diameter shaft connecting portion side connecting portion of the spacer is also small. Moreover, since the said spacer is a cylindrical shape which has a through-hole in center part, weight reduction of spacer itself can be achieved.

図１は、本考案の軸継手の分解した状態の斜視図である。FIG. 1 is an exploded perspective view of a shaft coupling according to the present invention. 図２は、本考案の軸継手の斜視図である。FIG. 2 is a perspective view of the shaft coupling of the present invention. 図３は、本考案の軸継手の正面面である。FIG. 3 is a front view of the shaft coupling of the present invention. 図４は、本考案の軸継手の左側面図である。FIG. 4 is a left side view of the shaft coupling of the present invention. 図５は、本考案の軸継手の右則面図である。FIG. 5 is a right side view of the shaft coupling of the present invention. 図６は、本考案の軸継手のＶ−Ｖ’断面図である。FIG. 6 is a V-V ′ sectional view of the shaft coupling of the present invention. 図７は、本考案の軸継手の一部切欠斜視図である。FIG. 7 is a partially cutaway perspective view of the shaft coupling of the present invention. 図８は、本考案の軸継手のＺ−Ｚ’断面図である。FIG. 8 is a Z-Z ′ sectional view of the shaft coupling of the present invention. 図９は、本考案の軸継手のＷ−Ｗ’断面図である。FIG. 9 is a cross-sectional view taken along the line W-W ′ of the shaft coupling of the present invention. 図１０は、本考案の軸継手のＹ−Ｙ’断面図である。FIG. 10 is a Y-Y ′ cross-sectional view of the shaft coupling of the present invention. 図１１は、本考案の軸継手のＸ−Ｘ’断面図である。FIG. 11 is an X-X ′ sectional view of the shaft coupling of the present invention. 図１２は、本考案の軸継手の異なる実施例の正面図である。FIG. 12 is a front view of a different embodiment of the shaft coupling of the present invention. 図１３は、本考案の軸継手の異なる実施例の断面図である。FIG. 13 is a cross-sectional view of a different embodiment of the shaft coupling of the present invention. 図１４は、本考案の軸継手の異なる実施例の右則面図である。FIG. 14 is a right side view of a different embodiment of the shaft coupling of the present invention. 図１５は、従来の軸継手の断面図である。FIG. 15 is a cross-sectional view of a conventional shaft coupling. 図１６は、従来の異なる軸継手の断面図である。FIG. 16 is a cross-sectional view of a different conventional shaft coupling.

本考案の軸継手について、図に示す実施例を用いて説明する。
図１〜図１１において、Ａは駆動側となるモーター等の大径の軸と連結される大径軸連結部であり、Ｂは従動側となるエンコーダー等の対象負荷の小径の軸と連結される小径軸連結部であり、Ｃは前記大径軸連結部Ａと前記小径軸連結部Ｂとの間に配置され、一方の大径軸連結部Ａに付与される回転力を他方の小径軸連結部Ｂに伝動するための回転力伝動部である。 The shaft coupling of the present invention will be described with reference to the embodiments shown in the drawings.
1 to 11, A is a large-diameter shaft coupling portion coupled to a large-diameter shaft such as a motor on the driving side, and B is coupled to a small-diameter shaft of a target load such as an encoder on the driven side. C is a small-diameter shaft coupling portion, and C is disposed between the large-diameter shaft coupling portion A and the small-diameter shaft coupling portion B, and the rotational force applied to one large-diameter shaft coupling portion A is applied to the other small-diameter shaft coupling portion A. It is a rotational force transmission part for transmitting to the connection part B.

前記大径軸連結部Ａは、図１〜図８に示すように、モーター等の大径の軸を挿入固定する大径軸用ハブ部２を備えた大径円筒体であり、前記小径軸連結部Ｂは、図１〜図７、図９に示すように、エンコーダー等の小径の軸を挿入固定する小径軸用ハブ部９を備えた小径円筒体である。   The large-diameter shaft connecting portion A is a large-diameter cylindrical body having a large-diameter shaft hub portion 2 for inserting and fixing a large-diameter shaft such as a motor, as shown in FIGS. As shown in FIGS. 1 to 7 and 9, the connecting portion B is a small-diameter cylindrical body including a small-diameter shaft hub portion 9 for inserting and fixing a small-diameter shaft such as an encoder.

前記大径軸用ハブ部２は、前記大径円筒体の周壁に、前記大径の軸を挿脱する大径軸挿入孔１部分を拡縮できるように、前記大径軸連結部Ａの外周面から前記大径軸挿入孔１に至る割溝３が設けられ、また、前記大径円筒体の外周面から前記大径軸挿入孔１に至る半円弧状の切欠溝４を、前記割溝３の一端と連通し、かつ前記大径円筒体の中心線に直交する方向に設けられ、前記大径軸挿入孔１部分の周壁が可動可能にして、前記大径軸連結部Ａに備えられ、前記大径軸用ハブ部２の内径は前記大径軸連結部Ａの内径と同じ大きさとなっている。   The large-diameter shaft hub portion 2 has an outer periphery of the large-diameter shaft coupling portion A so that a portion of the large-diameter shaft insertion hole 1 through which the large-diameter shaft is inserted / removed can be enlarged / reduced on the peripheral wall of the large-diameter cylindrical body. A split groove 3 extending from the surface to the large-diameter shaft insertion hole 1 is provided, and a semicircular cutout groove 4 extending from the outer peripheral surface of the large-diameter cylindrical body to the large-diameter shaft insertion hole 1 is provided as the split groove. 3 is provided in the large-diameter shaft coupling portion A so that the peripheral wall of the large-diameter shaft insertion hole 1 portion is movable. The inner diameter of the large-diameter shaft hub portion 2 is the same as the inner diameter of the large-diameter shaft coupling portion A.

さらに、前記割溝３の両側には、前記大径軸挿入孔１に挿入した大径の軸を固定する固定螺子６を挿入する螺子取付孔５が設けられ、この螺子取付孔５に固定螺子６を螺着することにより、前記大径軸挿入孔１を縮径し、前記大径軸挿入孔１に挿入した前記大径の軸を、前記大径軸用ハブ部２を介して前記大径軸連結部Ａに連結固定することができるようになっている。
また、前記大径軸連結部Ａには、前記大径軸連結部Ａに大径環状板ばね１１を大径側連結部板ばね間締結部材１９により取付ける取付孔１７が設けられている。 Further, on both sides of the split groove 3, screw mounting holes 5 for inserting a fixing screw 6 for fixing a large-diameter shaft inserted into the large-diameter shaft insertion hole 1 are provided. 6 is screwed to reduce the diameter of the large-diameter shaft insertion hole 1, and the large-diameter shaft inserted into the large-diameter shaft insertion hole 1 is inserted into the large-diameter shaft via the large-diameter shaft hub portion 2. It can be connected and fixed to the radial shaft connecting portion A.
The large-diameter shaft coupling portion A is provided with a mounting hole 17 for attaching the large-diameter annular leaf spring 11 to the large-diameter shaft coupling portion A by a large-diameter side coupling portion interplate spring fastening member 19.

前記大径軸連結部Ａ及び前記大径軸用ハブ部２は、できるだけ外内径の差を１００：６５〜１００：７５の比率の円筒体とすることが好ましく、これにより、前記大径軸連結部Ａの軽量化と慣性モーメントの低減を図ることができる。   It is preferable that the large-diameter shaft coupling portion A and the large-diameter shaft hub portion 2 be cylindrical bodies having a difference in outer diameter as much as possible in a ratio of 100: 65 to 100: 75. The portion A can be reduced in weight and the moment of inertia can be reduced.

前記小径軸連結部Ｂは、前記大径軸連結部Ａと同様の構造で、外径と内径をともに小さくしたものであり、前記小径軸用ハブ部９は、前記小径円筒体の周壁に、前記小径の軸を挿脱する小径軸挿入孔８部分を拡縮できるように、前記小径円筒体の外周面から前記小径軸挿入孔８に至る割溝３’が設けられ、また、前記小径円筒体の外周面から前記小径軸挿入孔８に至る半円弧状の切欠溝４’を、前記割溝３’の一端と連通し、かつ前記小径円筒体の中心線に直交する方向に設けられ、前記小径軸挿入孔８部分の周壁が可動可能にして、前記小径軸連結部Ａに備えられ、前記小径軸用ハブ部９の内径は、前記小径軸連結部Ｂの内径と同じ大きさとなっている。
また、前記小径軸連結部Ｂには、前記小径軸連結部Ｂに小径環状板ばね１２を小径側連結部板ばね間締結部材２０により取付ける取付孔１７’が設けられている。
前記小径軸連結部Ｂは小型であることから、軽量化及び慣性モーメントの低減に与える影響は小さいが、できるだけ外内径の差を少なくした円筒体とすることが好ましい。 The small-diameter shaft coupling portion B has the same structure as the large-diameter shaft coupling portion A, and both the outer diameter and the inner diameter are reduced. The small-diameter shaft hub portion 9 is formed on the peripheral wall of the small-diameter cylindrical body. A split groove 3 ′ extending from the outer peripheral surface of the small diameter cylindrical body to the small diameter shaft insertion hole 8 is provided so that the portion of the small diameter shaft insertion hole 8 for inserting and removing the small diameter shaft can be expanded and contracted. A semicircular cutout groove 4 ′ extending from the outer peripheral surface to the small-diameter shaft insertion hole 8 is provided in a direction communicating with one end of the split groove 3 ′ and perpendicular to the center line of the small-diameter cylindrical body, The peripheral wall of the small-diameter shaft insertion hole 8 is movable, and is provided in the small-diameter shaft coupling portion A. The inner diameter of the small-diameter shaft hub portion 9 is the same as the inner diameter of the small-diameter shaft coupling portion B. .
The small-diameter shaft coupling portion B is provided with a mounting hole 17 ′ for attaching the small-diameter annular leaf spring 12 to the small-diameter shaft coupling portion B by the small-diameter-side coupling portion interplate spring fastening member 20.
Since the small-diameter shaft coupling portion B is small, it has a small effect on weight reduction and reduction of the moment of inertia.

前記大径軸連結部は、駆動側のモーター等の大径の軸と連結される駆動軸連結部として使用され、前記小径軸連結部は、従動側のエンコーダー等の対象負荷の小径の軸と連結される従動軸連結部として使用されるものである。   The large-diameter shaft coupling portion is used as a drive shaft coupling portion coupled to a large-diameter shaft such as a drive-side motor, and the small-diameter shaft coupling portion is a small-diameter shaft of a target load such as a driven-side encoder. It is used as a driven shaft connecting portion to be connected.

前記回転力伝動部Ｃは、図１〜図３、図６、図７に示すように、スペーサー１３と大径環状板ばね１１と小径環状板ばね１２とから構成されている。
前記スペーサー１３は、同じ中心軸を有し、かつ外径の異なる３つの円筒部から成る一体物であり、前記大径軸連結部Ａの形状に対応した外径を有する短い筒状、例えば前記大径軸連結部Ａの外径と同じ大きさで、前記大径軸連結部Ａの端面７に合致する形状で、中心部に透孔を設けた大径ドーナツ盤状とした大径軸連結部側接続部１３ａと、前記小径軸連結部Ｂの形状に対応した外径を有する短い筒状、例えば前記小径軸連結部Ｂの外径と同じ大きさで、前記小径軸連結部Ｂの端面１０に合致する形状で、中心部に透孔を設けた厚さの薄い小径ドーナツ盤状とした小径軸連結部側接続部１３ｃと、前記大径軸連結部側接続部１３ａと前記小径軸連結部側接続部１３ｃとの間に設けられ、前記大径軸連結部側接続部１３ａの外径より小さく前記小径軸連結部側接続部１３ｃの外径より大きい外径を有する短い筒状、例えば中心部に透孔を設けたドーナッツ盤状とした円盤状段部１３ｂを一体に形成したものである。 As shown in FIGS. 1 to 3, 6, and 7, the rotational force transmission portion C includes a spacer 13, a large-diameter annular leaf spring 11, and a small-diameter annular leaf spring 12.
The spacer 13 is an integral body composed of three cylindrical portions having the same central axis and different outer diameters, and a short cylindrical shape having an outer diameter corresponding to the shape of the large-diameter shaft connecting portion A, for example, A large-diameter shaft connection having the same size as the outer diameter of the large-diameter shaft coupling portion A, a shape matching the end surface 7 of the large-diameter shaft coupling portion A, and a large-diameter donut disc shape having a through hole in the central portion. A short cylindrical shape having an outer diameter corresponding to the shape of the small-diameter shaft coupling portion B, for example, the same size as the outer diameter of the small-diameter shaft coupling portion B, and the end surface of the small-diameter shaft coupling portion B 10 having a small diameter donut disk shape with a through hole at the center, and a shape connecting to the small diameter shaft connecting portion side connecting portion 13c, the large diameter shaft connecting portion side connecting portion 13a, and the small diameter shaft connecting. Provided between the large-diameter shaft connecting portion side connecting portion 13a and the front side smaller than the outside diameter Short cylindrical shape having an outer diameter larger than the outer diameter of the small diameter shaft connecting portion side connecting portion 13c, for example, a disc-shaped step portion 13b which was provided with a through hole in the center donut board shape is obtained by forming integrally.

前記スペーサー１３の前記大径軸連結部側接続部１３ａの外径と、前記大径軸連結部Ａの外径と、前記大径環状板ばね１１の最大外径部における直径はほぼ等しくなっており、また、前記スペーサー１３の前記小径軸連結部側接続部１３ｃの外径と前記小径軸連結部Ｂの外径と、前記小径環状板ばね１２の最大外径部における直径もほぼ等しくなっている。   The outer diameter of the large-diameter shaft coupling portion side connecting portion 13a of the spacer 13, the outer diameter of the large-diameter shaft coupling portion A, and the diameter at the maximum outer diameter portion of the large-diameter annular leaf spring 11 are substantially equal. In addition, the outer diameter of the small-diameter shaft coupling portion side connection portion 13c of the spacer 13, the outer diameter of the small-diameter shaft coupling portion B, and the diameter at the maximum outer diameter portion of the small-diameter annular leaf spring 12 are substantially equal. Yes.

そして、前記大径軸連結部の内径、前記大径環状板ばね１１の内径、前記大径軸連結部側接続部１３ａの内径については、図６に示すように、前記大径軸連結部の内径が、前記大径環状板ばね１１の内径より小さく、前記スペーサー１３の前記大径軸連結部側接続部１３ａの内径は、前記大径軸連結部Ａの内径よりやや大きくしたものであり、モーター等の大径の軸を大径軸用ハブ部２に挿入固定する際、前記大径の軸が前記大径環状板ばね１１を挿通し、前記大径軸連結部側接続部１３ａの内部にまで挿入できるようになっている。
また、前記小径軸連結部Ｂの内径、前記小径環状板ばね１２の内径、前記小径軸連結部側接続部１３ｃの内径については、前記小径軸連結部Ｂの内径が、前記小径環状板ばね１２の内径より小さく、前記スペーサー１３の前記小径軸連結部側接続部１３ｃの内径は、前記小径軸連結部Ｂの内径よりやや大きいものとなっている。 And about the internal diameter of the said large diameter shaft connection part, the internal diameter of the said large diameter annular leaf | plate spring 11, and the internal diameter of the said large diameter shaft connection part side connection part 13a, as shown in FIG. The inner diameter is smaller than the inner diameter of the large-diameter annular leaf spring 11, and the inner diameter of the large-diameter shaft coupling portion side connection portion 13a of the spacer 13 is slightly larger than the inner diameter of the large-diameter shaft coupling portion A. When a large-diameter shaft such as a motor is inserted and fixed to the large-diameter shaft hub portion 2, the large-diameter shaft passes through the large-diameter annular leaf spring 11, and the inside of the large-diameter shaft coupling portion side connection portion 13a. It can be inserted up to.
Regarding the inner diameter of the small-diameter shaft coupling portion B, the inner diameter of the small-diameter annular leaf spring 12, and the inner diameter of the small-diameter shaft coupling portion-side connecting portion 13c, the inner diameter of the small-diameter shaft coupling portion B is the small-diameter annular leaf spring 12. The inner diameter of the small-diameter shaft coupling portion side connection portion 13c of the spacer 13 is slightly larger than the inner diameter of the small-diameter shaft coupling portion B.

前記回転力伝動部Ｃの前記大径環状板ばね１１は、前記大径軸連結部Ａと前記スペーサー１３の間に配置されるもので、前記大径軸連結部Ａの形状に対応した形状であり、詳しくは向かい合う前記大径軸連結部Ａの端面７と前記スペーサー１３の前記大径軸連結部側接続部１３ａの端面間に配置され、前記大径環状板ばね１１の外縁および内縁が、前記大径軸連結部Ａと前記大径軸連結部側接続部１３ａの外縁および内縁から露出しない大きさとしたものである。   The large-diameter annular leaf spring 11 of the rotational force transmission portion C is disposed between the large-diameter shaft coupling portion A and the spacer 13 and has a shape corresponding to the shape of the large-diameter shaft coupling portion A. In detail, it is disposed between the end surface 7 of the large-diameter shaft coupling portion A and the end surface of the large-diameter shaft coupling portion-side connecting portion 13a of the spacer 13, and the outer and inner edges of the large-diameter annular leaf spring 11 are The large-diameter shaft coupling portion A and the large-diameter shaft coupling portion-side connection portion 13a are not exposed from the outer edge and the inner edge.

また、前記回転力伝動部Ｃの前記小径環状板ばね１２は、前記小径軸連結部Ｂと前記スペーサー１３の間に配置されるもので、前記小径軸連結部Ｂの形状に対応した形状であり、詳しくは向かい合う前記小径軸連結部Ｂの端面１０と前記スペーサー１３の前記小径軸連結部側接続部１３ｃの端面間に配置され、前記小径環状板ばね１２の外縁および内縁が、前記小径軸連結部Ｂと前記小径軸連結部側接続部１３ｃの外縁および内縁から露出しない大きさとしたものである。   The small-diameter annular leaf spring 12 of the rotational force transmission portion C is disposed between the small-diameter shaft coupling portion B and the spacer 13 and has a shape corresponding to the shape of the small-diameter shaft coupling portion B. Specifically, the small-diameter shaft coupling portion B is disposed between the end surface 10 of the small-diameter shaft coupling portion B and the end surface of the small-diameter shaft coupling portion-side connection portion 13c of the spacer 13, and the outer and inner edges of the small-diameter annular leaf spring 12 are connected to the small-diameter shaft coupling. The size is such that it is not exposed from the outer edge and inner edge of the portion B and the small-diameter shaft coupling portion side connecting portion 13c.

そして、前記回転力伝動部Ｃの前記スペーサー１３には、前記大径環状板ばね１１を取付ける取付孔１６、前記小径環状板ばね１２を取付ける取付孔１６’が設けられ、前記スペーサー１３と前記大径環状板ばね１１を大径側スペーサー板ばね間締結部材２１を用いて結合でき、また、前記スペーサー１３と前記小径環状板ばね１２を小径側スペーサー板ばね間締結部材２２を用いて結合できるようになっている。   The spacer 13 of the rotational force transmission portion C is provided with an attachment hole 16 for attaching the large-diameter annular leaf spring 11 and an attachment hole 16 ′ for attaching the small-diameter annular leaf spring 12. The radial annular leaf spring 11 can be coupled using a large-diameter spacer leaf spring fastening member 21, and the spacer 13 and the small-diameter annular leaf spring 12 can be coupled using a small-diameter spacer leaf spring fastening member 22. It has become.

前記大径環状板ばね１１の形状と大きさは、図１０に示すように、外形が四辺から成り各辺が外側に円弧状に膨出した形状の四角形であり、四角形の各頂部１８が前記大径軸連結部Ａまたは前記スペーサー１３の前記大径軸連結部側接続部１３ａの外縁から突出しない大きさであり、内径が前記大径軸連結部Ａの内縁から露出しない大きさであって、前記大径軸連結部Ａの内径より少し大きくしたものがよい。
同様に、前記小径環状板ばね１２も、図１１に示すように、外形が四辺から成り各辺が外側に円弧状に膨出した形状の四角形であり、四角形の各頂部１８’が前記小径軸連結部Ｂの外縁から突出しない大きさであり、内径が前記小径軸連結部Ｂの内縁から露出しない大きさであって、前記小径軸連結部Ｂの内径より少し大きくしたものがよい。 As shown in FIG. 10, the shape and size of the large-diameter annular leaf spring 11 is a quadrangular shape whose outer shape is formed by four sides and each side bulges outward in an arc shape. The large-diameter shaft coupling portion A or the spacer 13 has a size that does not protrude from the outer edge of the large-diameter shaft coupling portion-side connecting portion 13a, and the inner diameter is a size that is not exposed from the inner edge of the large-diameter shaft coupling portion A. A thing slightly larger than the inner diameter of the large-diameter shaft connecting portion A is preferable.
Similarly, as shown in FIG. 11, the small-diameter annular leaf spring 12 is a quadrangular shape whose outer shape is formed by four sides and each side bulges outward in a circular arc shape, and each of the top portions 18 ′ of the quadrilateral has the small-diameter shaft. A size that does not protrude from the outer edge of the connecting portion B, and an inner diameter that is not exposed from the inner edge of the small-diameter shaft connecting portion B and that is slightly larger than the inner diameter of the small-diameter shaft connecting portion B is preferable.

また、前記大径環状板ばね１１の四角形の各頂部１８の内側には、前記大径側連結部板ばね間締結部材１９を挿通する貫通孔１４、前記大径側スペーサー板ばね間締結部材２１を挿通する貫通孔１４’が設けられ、同様に、前記小径環状板ばね１２の四角形の各頂部１８’の内側にも、前記小径側連結部板ばね間締結部材２０を挿通する貫通孔１５、前記小径側スペーサー板ばね間締結部材２２を挿通する貫通孔１５’が設けられ、前記大径側スペーサー板ばね間締結部材２１と小径側スペーサー板ばね間締結部材２２により、前記スペーサー１３と前記大径環状板ばね１１と前記小径環状板ばね１２とを結合し、前記回転力伝動部Ｃが構成されるようになっている。   Further, inside each square top 18 of the large-diameter annular leaf spring 11, a through-hole 14 through which the large-diameter side connecting portion leaf spring fastening member 19 is inserted, and the large-diameter spacer leaf spring fastening member 21 are inserted. Through-holes 14 'are also provided. Similarly, through-holes 15 through which the small-diameter-side connecting portion leaf spring fastening members 20 are inserted inside the square top portions 18' of the small-diameter annular leaf springs 12, respectively. A through hole 15 ′ is provided through which the small-diameter spacer plate spring fastening member 22 is inserted. The large-diameter spacer plate spring fastening member 21 and the small-diameter spacer plate spring fastening member 22 provide the spacer 13 and the large-sized spacer plate spring fastening member 22. The rotational force transmission portion C is configured by coupling the radial annular leaf spring 11 and the small-diameter annular leaf spring 12.

前記大径環状板ばね１１及び前記小径環状板ばね１２の形状は、前記した形状としたので、頂部１８、１８’のやや内側に、前記大径側連結部板ばね間締結部材１９や前記小径側連結部板ばね間締結部材２０、また、大径側スペーサー板ばね間締結部材２１や小径側スペーサー板ばね間締結部材２２を挿通する貫通孔１４、１４’、１５、１５’を穿設しても、前記大径環状板ばね１１及び前記小径環状板ばね１２の形状をリング状にする場合よりも、前記大径環状板ばね１１及び前記小径環状板ばね１２の幅を小さくし軽量化を図っても、強度を維持することができるようになっている。   Since the shapes of the large-diameter annular leaf spring 11 and the small-diameter annular leaf spring 12 are the above-described shapes, the large-diameter side connecting portion leaf spring fastening member 19 and the small diameter are slightly inside the top portions 18 and 18 '. The through-holes 14, 14 ′, 15, 15 ′ are inserted through the side connecting portion leaf spring fastening member 20 and the large diameter spacer leaf spring fastening member 21 and the small diameter spacer leaf spring fastening member 22. However, the width of the large-diameter annular leaf spring 11 and the small-diameter annular leaf spring 12 is made smaller and lighter than when the large-diameter annular leaf spring 11 and the small-diameter annular leaf spring 12 are shaped like a ring. Even if it shows, intensity | strength can be maintained now.

前記回転力伝動部Ｃの前記大径環状板ばね１１は、前記大径側連結部板ばね間締結部材１９により、貫通孔１４を挿通して前記大径軸連結部Ａの端面７に設けた取付孔１７に取り付けられ、前記回転力伝動部Ｃを前記大径軸連結部Ａに結合することができ、また、前記回転力伝動部Ｃの前記小径環状板ばね１２は、前記小径側連結部板ばね間締結部材２０により、貫通孔１５を挿通して前記小径軸連結部Ｂの端面１０に設けた取付孔１７’に取り付けられ、前記大径軸連結部Ａと前記小径軸連結部Ｂを前記回転力伝動部Ｃを介して結合し、軸継手を構成するようになっている。   The large-diameter annular leaf spring 11 of the rotational force transmission portion C is provided on the end surface 7 of the large-diameter shaft coupling portion A through the through hole 14 by the large-diameter side coupling portion leaf spring fastening member 19. The rotational force transmission part C can be coupled to the large-diameter shaft coupling part A, and the small-diameter annular leaf spring 12 of the rotational force transmission part C is coupled to the small-diameter side coupling part. The leaf spring fastening member 20 is inserted into the through hole 15 and attached to the mounting hole 17 ′ provided in the end surface 10 of the small diameter shaft coupling portion B. The large diameter shaft coupling portion A and the small diameter shaft coupling portion B are connected to each other. They are coupled via the rotational force transmission part C to constitute a shaft coupling.

そして、前記大径軸連結部Ａ及び前記小径軸連結部Ｂは、図１〜図３、図６〜図９に示す大径の軸を前記大径軸用ハブ部２に固定する前記固定螺子６、小径の軸を前記小径軸用ハブ部９に固定する前記固定螺子６’、及び、前記大径軸連結部Ａに前記大径環状板ばね１１を結合する前記大径側連結部板ばね間締結部材１９、前記小径軸連結部Ｂに前記小径環状板ばね１２を結合する前記小径側連結部板ばね間締結部材２０の各部材を、必要最小限に軽量・小型化したものを使用し、これに伴い前記固定螺子取付孔５、５’及び、挿通孔１７、１７’を極力小さくし、前記大径軸連結部Ａ及び前記大径軸用ハブ部２は、内径と外径が（６５／１００〜７５／１００）となるようして、できるだけ外内径の差を少なくし肉厚の薄い円筒体とし、また、前記小径軸連結部Ｂの外径と前記小径軸挿入孔８の内径の差を小さくし、小径軸連結部Ｂも肉厚の薄い円筒体とし、前記大径軸連結部Ａ又は前記小径軸連結部Ｂを所定の高鋼性を保持しながら軽量化を図り慣性モーメントの低減を図っている。   The large-diameter shaft connecting portion A and the small-diameter shaft connecting portion B are the fixing screws for fixing the large-diameter shaft shown in FIGS. 1 to 3 and FIGS. 6 to 9 to the large-diameter shaft hub portion 2. 6. The fixing screw 6 ′ for fixing the small-diameter shaft to the small-diameter shaft hub portion 9, and the large-diameter side coupling portion leaf spring for coupling the large-diameter annular leaf spring 11 to the large-diameter shaft coupling portion A. The intermediate fastening member 19 and the small-diameter side connecting portion leaf spring fastening member 20 that couples the small-diameter annular leaf spring 12 to the small-diameter shaft connecting portion B are made to be light and small in size. Accordingly, the fixing screw mounting holes 5, 5 ′ and the insertion holes 17, 17 ′ are made as small as possible, and the large-diameter shaft connecting portion A and the large-diameter shaft hub portion 2 have an inner diameter and an outer diameter ( 65/100 to 75/100) so that the difference in outer diameter is reduced as much as possible to obtain a thin cylindrical body. The difference between the outer diameter of the small-diameter shaft coupling portion B and the inner diameter of the small-diameter shaft insertion hole 8 is reduced, the small-diameter shaft coupling portion B is also a thin cylindrical body, and the large-diameter shaft coupling portion A or the small-diameter shaft The connecting portion B is reduced in weight while maintaining a predetermined high steel property to reduce the moment of inertia.

図中、２３は前記大径軸連結部に前記大径環状板ばね１１を結合する際に、前記大径軸連結部の端面７と前記大径環状板ばね１１との間に入れる座金である。同様に、２４は前記小径軸連結部と前記小径環状板ばね１２との間に入れる座金、２５は、前記大径環状板ばね１１と前記スペーサー１３の前記大径軸連結部側接続部１３ａとの間に入れる座金、２６は、前記小径環状板ばね１２と前記スペーサー１３の前記小径軸連結部側接続部１３ｃの間に入れる座金である。   In the figure, reference numeral 23 denotes a washer inserted between the end face 7 of the large-diameter shaft coupling portion and the large-diameter annular leaf spring 11 when the large-diameter annular leaf spring 11 is coupled to the large-diameter shaft coupling portion. . Similarly, 24 is a washer inserted between the small-diameter shaft coupling portion and the small-diameter annular leaf spring 12, and 25 is a large-diameter shaft coupling portion-side connecting portion 13a of the large-diameter annular leaf spring 11 and the spacer 13. A washer 26 is inserted between the small-diameter annular leaf spring 12 and the spacer 13 between the small-diameter shaft connecting portion side connecting portion 13c.

次に、図１２〜図１４は、図１〜図１１に示す実施例と異なる実施例であり、回転力伝動部Ｃのスペーサー１３として、同じ中心軸を有し、外径の異なる大径軸連結部側接続部１３ａと小径軸連結部側接続部１３ｃの２つの円筒部を一体に形成したものが使用され、また、大径軸連結部Ａと回転力伝動部Ｃの大径環状板ばね１１とをボルトナット１９’で結合し、小径軸連結部Ｂと回転力伝動部Ｃの小径環状板ばね１２をボルトナット２０’で結合するようにしたものである。   Next, FIGS. 12 to 14 are embodiments different from the embodiments shown in FIGS. 1 to 11, and have the same central axis as the spacer 13 of the rotational force transmission portion C, and a large diameter shaft having a different outer diameter. The two cylindrical portions of the connecting portion side connecting portion 13a and the small diameter shaft connecting portion side connecting portion 13c are integrally formed, and the large diameter annular leaf spring of the large diameter shaft connecting portion A and the rotational force transmission portion C is used. 11 is coupled by a bolt and nut 19 ′, and the small-diameter shaft coupling portion B and the small-diameter annular leaf spring 12 of the rotational force transmission portion C are coupled by a bolt-nut 20 ′.

この実施例のスペーサー１３は、前記大径軸連結部Ａの外径と同じ大きさで、前記大径軸連結部Ａの端面７に合致する形状で、中心部に透孔を設けた大径ドーナツ盤状とした大径軸連結部側接続部１３ａと、前記小径軸連結部Ｂの外径と同じ大きさで、前記小径軸連結部Ｂの端面１０に合致する形状で、中心部に透孔を設けた小径ドーナツ盤状とした小径軸連結部側接続部１３ｃとから形成されたもので、その他の構成は前記実施例と共通するものである。   The spacer 13 in this embodiment has the same size as the outer diameter of the large-diameter shaft coupling portion A, a shape matching the end surface 7 of the large-diameter shaft coupling portion A, and a large diameter provided with a through hole in the central portion. A large-diameter shaft coupling portion side connection portion 13a having a donut disk shape and the same size as the outer diameter of the small-diameter shaft coupling portion B, and a shape that matches the end surface 10 of the small-diameter shaft coupling portion B, are transparent in the center portion. It is formed from a small-diameter shaft coupling portion side connection portion 13c in the form of a small-diameter donut board provided with holes, and the other configurations are the same as those in the above-described embodiment.

この実施例の場合は、前記大径軸連結部Ａの内径は、前記大径環状板ばね１１の内径より小さく、前記スペーサー１３の前記大径軸連結部側接続部１３ａの内径は、前記大径軸連結部の内径より大きく、前記小径軸連結部Ｂの内径は、前記小径環状板ばね１２の内径より小さく、前記スペーサー１３の前記小径軸連結部側接続部１３ｃの内径は、前記小径軸連結部Ｂの内径より大きいものとなっている。
前記スペーサー１３の前記大径軸連結部側接続部１３ａの内径は、前記大径軸連結部の内径より大きくすることにより、前記大径軸用ハブ部２に挿入固定するモーター等の大径の軸が前記大径環状板ばね１１を挿通し、前記大径軸連結部側接続部１３ａの内部にまで挿入できるようになっているが、軸継手に使用する前記大径軸連結部によっては、前記大径軸連結部の内径が前記大径軸連結部側接続部１３ａの内径より大きい場合があり、その場合は、前記大径軸用ハブ部２に挿入固定する大径の軸の挿入位置は、前記大径環状板ばね１１を挿通し、前記大径軸連結部側接続部１３ａの手前までとなる。 In the case of this embodiment, the inner diameter of the large-diameter shaft coupling portion A is smaller than the inner diameter of the large-diameter annular leaf spring 11, and the inner diameter of the large-diameter shaft coupling portion side connection portion 13a of the spacer 13 is the large diameter. The inner diameter of the small-diameter shaft coupling portion B is smaller than the inner diameter of the small-diameter annular leaf spring 12, and the inner diameter of the small-diameter shaft coupling portion-side connecting portion 13c of the spacer 13 is larger than the inner diameter of the radial shaft coupling portion. It is larger than the inner diameter of the connecting portion B.
The inner diameter of the large-diameter shaft coupling portion side connection portion 13a of the spacer 13 is made larger than the inner diameter of the large-diameter shaft coupling portion, so that a large-diameter motor such as a motor that is inserted into and fixed to the large-diameter shaft hub portion 2 is used. The shaft is inserted through the large-diameter annular leaf spring 11 and can be inserted into the large-diameter shaft coupling portion side connection portion 13a, but depending on the large-diameter shaft coupling portion used for the shaft coupling, The inner diameter of the large-diameter shaft coupling portion may be larger than the inner diameter of the large-diameter shaft coupling portion-side connecting portion 13a. In this case, the insertion position of the large-diameter shaft that is inserted and fixed in the large-diameter shaft hub portion 2 Is inserted through the large-diameter annular leaf spring 11 and before the large-diameter shaft coupling portion side connection portion 13a.

なお、前記回転力伝動部Ｃのスペーサー１３として、２つの円筒部を一体に形成したものと、３つの円筒部を一体に形成したものを示したが、これに限られるものではなく、前記大径軸連結部側接続部１３ａの外径より小さく、前記小径軸連結部側接続部１３ｃの外径より大きい外径を有する複数の円盤状段部１３ｂを、前記大径軸連結部側接続部１３ａと前記小径軸連結部側接続部１３ｃとの間に、外径の大きいものから外径の小さいものを順に同心円状にして配置し一体に形成した形状のものとしてもよい。   In addition, although the thing which formed two cylindrical parts integrally as the spacer 13 of the said rotational force transmission part C and the thing which formed three cylindrical parts integrally were shown, it is not restricted to this, The said large A plurality of disk-shaped step portions 13b having an outer diameter smaller than the outer diameter of the radial shaft connecting portion side connecting portion 13a and larger than the outer diameter of the small diameter shaft connecting portion side connecting portion 13c are connected to the large diameter shaft connecting portion side connecting portion. Between the small diameter shaft coupling portion side connecting portion 13c and the small diameter shaft connecting portion side connecting portion 13c, the one having the largest outer diameter and the one having the smallest outer diameter may be arranged concentrically in order and formed into an integral shape.

本考案は、上記構成により、使用するモーター等の駆動軸の回転力及び駆動軸である大径の軸の大きさに対応する大径軸連結部と、エンコーダー等の対象負荷の従動軸である小径の軸の回転力及び小径の軸の大きさに対応する小径軸連結部とを用い、また、前記大径軸連結部の形状に対応した大径軸連結部側接続部と前記小径軸連結部の形状に対応した小径軸連結部側接続部を有するスペーサーと、前記大径軸連結部の形状に対応した大径環状板ばねと、前記小径軸連結部の形状に対応した小径環状板ばねとからなる回転力伝動部を用い、前記大径軸連結部と小径軸連結部の間に前記回転力伝動部を配置し、大径側連結部板ばね間締結部材と、小径側連結部板ばね間締結部材と、大径側スペーサー板ばね間締結部材と、小径側スペーサー板ばね間締結部材とを用いて、前記大径軸連結部と小径軸連結部とを回転力伝動部を介して結合することにより、軸継手を構成することができる。   The present invention is a large-diameter shaft coupling portion corresponding to the rotational force of a drive shaft such as a motor to be used and the size of the large-diameter shaft as a drive shaft, and a driven shaft of a target load such as an encoder. A small-diameter shaft coupling portion corresponding to the rotational force of the small-diameter shaft and the size of the small-diameter shaft; A spacer having a small diameter shaft coupling portion side connection corresponding to the shape of the portion, a large diameter annular leaf spring corresponding to the shape of the large diameter shaft coupling portion, and a small diameter annular leaf spring corresponding to the shape of the small diameter shaft coupling portion The rotational force transmission part is arranged between the large-diameter shaft coupling part and the small-diameter shaft coupling part, and the large-diameter side coupling part plate spring fastening member and the small-diameter side coupling part plate Inter-spring fastening member, large-diameter side spacer plate, inter-spring fastening member, and small-diameter side spacer plate Using as between fastening member, by coupling via a rotational force transmission portion and the large diameter shaft connecting portion and the small diameter shaft connecting portion, it is possible to configure the shaft coupling.

そして、駆動側となるモーター等の大径の軸を前記大径軸連結部の大径軸用ハブに挿入し、固定螺子を螺着して大径軸を大径軸連結部に固定し、従動側となるエンコーダー等の対象負荷の小径の軸を前記小径軸連結部の小径軸用ハブに挿入し、固定螺子を螺着して小径軸を小径軸連結部に固定することにより、駆動側となるモーター等の回転力が、前記大径軸連結部に付与され、その付与された回転力が前記小径軸連結部に伝動され、エンコーダー等の対象負荷の小径の軸に回転力が付与されことになる。   Then, a large-diameter shaft such as a motor on the drive side is inserted into the large-diameter shaft hub of the large-diameter shaft coupling portion, and a fixing screw is screwed to fix the large-diameter shaft to the large-diameter shaft coupling portion By inserting the small diameter shaft of the target load such as the encoder on the driven side into the small diameter shaft hub of the small diameter shaft coupling portion, and screwing the fixing screw to fix the small diameter shaft to the small diameter shaft coupling portion, the driving side The rotating force of the motor or the like is applied to the large-diameter shaft connecting portion, the applied rotating force is transmitted to the small-diameter shaft connecting portion, and the rotating force is applied to the small-diameter shaft of the target load such as an encoder. It will be.

上記のように、本考案の軸継手は、大径軸連結部の外径と小径軸連結部の外径の大きさが異なるものを結合することができ、小径軸連結部に接続されるエンコーダー等の対象負荷に対応して、前記大径軸連結部より小型の小径軸連結部を使用することができる。また、回転力伝動部も小径軸連結部の外径の大きさに合わせた小径環状板ばねを使用することができ、スペーサーも小径軸連結部に対向する小径軸連結部側接続部の外径を小さくしたものを使用できる。
よって、連結部、及び、回転力伝動部の軽量化により、軸継手全体の回転方向の慣性モーメントを大幅に低減することができ、例えば、本考案の軸継手をエンコーダーの繋ぎに使用すると、過大な慣性モーメントが作用しエンコーダーの精度に悪影響を与えることがない。 As described above, the shaft coupling of the present invention is an encoder connected to the small-diameter shaft coupling portion, which can combine the outer diameter of the large-diameter shaft coupling portion and the outer diameter of the small-diameter shaft coupling portion. Corresponding to a target load such as the above, a small-diameter shaft coupling portion smaller than the large-diameter shaft coupling portion can be used. In addition, a small-diameter annular leaf spring that matches the size of the outer diameter of the small-diameter shaft coupling portion can also be used for the rotational force transmission portion, and the outer diameter of the small-diameter shaft coupling portion-side connection portion that faces the small-diameter shaft coupling portion Can be used.
Therefore, by reducing the weight of the connecting portion and the rotational force transmission portion, the inertia moment in the rotational direction of the entire shaft joint can be greatly reduced. For example, if the shaft joint of the present invention is used for connecting encoders, Inertia moment does not affect the encoder accuracy.

さらに、回転力伝動部を構成するスペーサーと環状板ばねとして、前記大径軸連結部の外径、前記小径軸連結部の外径に合う色々のサイズのものを用意することにより、外径の大きさの異なる前記大径軸連結部と前記小径軸連結部を自在に組合せて使用することが可能となり、対象負荷に最も適した慣性モーメントの小さい軸継手を提供することが容易にできる。   Furthermore, as the spacer and the annular leaf spring constituting the rotational force transmission part, various sizes suitable for the outer diameter of the large-diameter shaft coupling part and the outer diameter of the small-diameter shaft coupling part are prepared. The large-diameter shaft coupling portion and the small-diameter shaft coupling portion having different sizes can be used in any combination, and it is possible to easily provide a shaft coupling having a small inertia moment that is most suitable for the target load.

Ａ 大径軸連結部
Ｂ 小径軸連結部
Ｃ 回転力伝動部
１ 大径軸挿入孔
２ 大径軸用ハブ部
７ 大径軸連結部の端面
８ 小径軸挿入孔
９ 小径軸用ハブ部
１０ 小径軸連結部の端面
１１ 大径環状板ばね
１２ 小径環状板ばね
１３ スペーサー
１３ａ 大径軸連結部側接続部
１３ｂ 円盤状段部
１３ｃ 小径軸連結部側接続部
１８ 大径環状板ばねの頂部
１８’ 小径環状板ばねの頂部
１９ 大径側連結部板ばね間締結部材
２０ 小径側連結部板ばね間締結部材
２１ 大径側スペーサー板ばね間締結部材
２２ 小径側スペーサー板ばね間締結部材 A Large-diameter shaft coupling part B Small-diameter shaft coupling part C Rotational force transmission part 1 Large-diameter shaft insertion hole
2 Hub for large diameter shaft
7 End surface of large diameter shaft connecting portion 8 Small diameter shaft insertion hole 9 Small diameter shaft hub portion 10 End surface of small diameter shaft connecting portion 11 Large diameter annular leaf spring 12 Small diameter annular leaf spring 13 Spacer 13a Large diameter shaft coupling portion side connection portion 13b Disk Stepped portion 13c Small diameter shaft coupling portion side connection portion 18 Large diameter annular leaf spring top portion 18 'Small diameter annular leaf spring top portion 19 Large diameter side coupling portion leaf spring fastening member 20 Small diameter side coupling portion leaf spring fastening member 21 Large Diameter side spacer leaf spring fastening member 22 Small diameter side spacer leaf spring fastening member

Claims (14)

大径の軸と連結するための大径軸連結部と、前記大径の軸より小径の軸と連結するための小径軸連結部と、前記大径軸連結部と前記小径軸連結部との間に配置され、一方の前記連結部に付与される回転力を他方の前記連結部に伝動するための回転力伝動部とを備える軸継手であって、
前記大径軸連結部は、前記大径の軸を挿入固定する大径軸用ハブ部を備える大径円筒体であり、前記小径軸連結部は、前記小径の軸を挿入固定する小径軸用ハブ部を備え、かつ、前記大径軸連結部より外径および内径がともに小さい小径円筒体であり、
前記回転力伝動部は、前記大径軸連結部の形状に対応した外径を有する短い筒状の大径軸連結部側接続部と、前記小径軸連結部の形状に対応した外径を有する短い筒状の小径軸連結部側接続部とを有するスペーサーと、前記大径軸連結部と前記スペーサーの前記大径軸連結部側接続部間に配置されかつ前記大径軸連結部の形状に対応した形状を有する大径環状板ばねと、前記小径軸連結部と前記スペーサーの前記小径軸連結部側接続部間に配置されかつ前記小径軸連結部の形状に対応した形状を有する小径環状板ばねと、前記大径軸連結部と前記大径環状板ばねを連結する大径側連結部板ばね間締結部材と、前記スペーサーの前記大径軸連結部側接続部と前記大径環状板ばねを連結する大径側スペーサー板ばね間締結部材と、前記小径軸連結部と前記小径環状板ばねを連結する小径側連結部板ばね間締結部材と、前記スペーサーの前記小径軸連結部側接続部と前記小径環状板ばねを連結する小径側スペーサー板ばね間締結部材とを備えることを特徴とする軸継手。 A large-diameter shaft coupling portion for coupling with a large-diameter shaft, a small-diameter shaft coupling portion for coupling with a smaller-diameter shaft than the large-diameter shaft, and the large-diameter shaft coupling portion and the small-diameter shaft coupling portion. A shaft coupling including a rotational force transmission portion disposed between and a rotational force transmission portion for transmitting a rotational force applied to one of the connection portions to the other connection portion,
The large-diameter shaft coupling portion is a large-diameter cylindrical body having a large-diameter shaft hub portion for inserting and fixing the large-diameter shaft, and the small-diameter shaft coupling portion is for a small-diameter shaft for inserting and fixing the small-diameter shaft. A small-diameter cylindrical body having a hub portion and having both an outer diameter and an inner diameter smaller than those of the large-diameter shaft coupling portion,
The rotational force transmission portion has a short cylindrical large-diameter shaft coupling portion side connection portion having an outer diameter corresponding to the shape of the large-diameter shaft coupling portion, and an outer diameter corresponding to the shape of the small-diameter shaft coupling portion. A spacer having a short cylindrical small-diameter shaft coupling portion side connection portion, and is disposed between the large-diameter shaft coupling portion and the large-diameter shaft coupling portion-side connection portion of the spacer and in the shape of the large-diameter shaft coupling portion. A large-diameter annular leaf spring having a corresponding shape, and a small-diameter annular plate disposed between the small-diameter shaft coupling portion and the small-diameter shaft coupling portion-side connecting portion of the spacer and having a shape corresponding to the shape of the small-diameter shaft coupling portion A spring, a large-diameter-side coupling portion plate spring fastening member that couples the large-diameter shaft coupling portion and the large-diameter annular leaf spring, the large-diameter shaft coupling portion-side connection portion of the spacer, and the large-diameter annular leaf spring The large-diameter side spacer leaf spring fastening member for coupling the small-diameter shaft coupling And a small-diameter-side coupling leaf spring fastening member that couples the small-diameter annular leaf spring, and a small-diameter spacer leaf spring fastening member that couples the small-diameter shaft coupling portion-side connection portion of the spacer and the small-diameter annular leaf spring. A shaft coupling comprising: 前記大径環状板ばねは、向かい合う前記大径軸連結部の端面と前記スペーサーの前記大径軸連結部側接続部の端面間に収納され、前記大径環状板ばねは、外縁および内縁が実質的に露出しないものとなっており、前記小径環状板ばねは、向かい合う前記小径軸連結部の端面と前記スペーサーの前記小径軸連結部側接続部の端面間に収納され、前記小径環状板ばねは、外縁および内縁が実質的に露出しないものとなっている請求項１に記載の軸継手。 The large-diameter annular leaf spring is accommodated between an end surface of the large-diameter shaft coupling portion and an end surface of the spacer on the large-diameter shaft coupling portion-side connection portion, and the large-diameter annular leaf spring has substantially an outer edge and an inner edge. The small-diameter annular leaf spring is housed between an end surface of the small-diameter shaft coupling portion and an end surface of the small-diameter shaft coupling portion side connection portion of the spacer, and the small-diameter annular leaf spring is The shaft coupling according to claim 1, wherein the outer edge and the inner edge are not substantially exposed. 前記大径軸連結部の前記大径軸用ハブ部は、内径が外径の（６５／１００〜７５／１００）である外内径差の少ない円筒体である請求項１または２に記載の軸継手。 3. The shaft according to claim 1, wherein the large-diameter shaft hub portion of the large-diameter shaft coupling portion is a cylindrical body having an inner diameter (65/100 to 75/100) having a small outer diameter difference. Fittings. 前記大径軸連結部は、駆動軸連結部であり、前記小径軸連結部は、従動軸連結部である請求項１ないし３のいずれかに記載の軸継手。 The shaft coupling according to any one of claims 1 to 3, wherein the large-diameter shaft coupling portion is a drive shaft coupling portion, and the small-diameter shaft coupling portion is a driven shaft coupling portion. 前記環状板ばねは、外形が四辺から成り各辺が外側に円弧状に膨出した形状の四角形であり、四角形の各頂部が前記連結部の端面の外周から突出しない大きさであり、前記環状板ばねの内径は、前記ハブ部の内径より大きくした請求項１ないし４のいずれかに記載の軸継手。 The annular leaf spring is a quadrangle whose outer shape is composed of four sides and each side bulges outward in an arc shape, and each apex of the quadrangle is of a size that does not protrude from the outer periphery of the end surface of the connecting portion. The shaft coupling according to any one of claims 1 to 4, wherein an inner diameter of the leaf spring is larger than an inner diameter of the hub portion. 前記回転力伝動部のスペーサーは、同じ中心軸を有し、かつ外径の異なる２つの円筒部を有する一体物であり、さらに、前記スペーサーの前記大径軸連結部側接続部の外径と前記大径軸連結部の外径と前記大径環状板ばねの最大外径部における直径はほぼ等しいものとなっており、前記スペーサーの前記小径軸連結部側接続部の外径と前記小径軸連結部の外径と前記小径環状板ばねの最大外径部における直径はほぼ等しいものとなっている請求項１ないし５のいずれかに記載の軸継手。 The spacer of the rotational force transmission part is an integral body having two cylindrical parts having the same central axis and different outer diameters, and further, the outer diameter of the connecting part on the large-diameter shaft coupling part side of the spacer. The outer diameter of the large-diameter shaft coupling portion and the diameter of the maximum outer-diameter portion of the large-diameter annular leaf spring are substantially equal, and the outer diameter of the spacer on the small-diameter shaft coupling portion side connection portion and the small-diameter shaft The shaft coupling according to any one of claims 1 to 5, wherein an outer diameter of the connecting portion and a diameter at the maximum outer diameter portion of the small-diameter annular leaf spring are substantially equal. 前記回転力伝動部のスペーサーは、同じ中心軸を有し、かつ外径の異なる２つの円筒部を有する一体物であり、さらに、前記大径軸連結部の内径は、前記大径環状板ばねの内径より小さく、前記スペーサーの前記大径軸連結部側接続部の内径は、前記大径軸連結部の内径より大きいものとなっており、前記小径軸連結部の内径は、前記小径環状板ばねの内径より小さく、前記スペーサーの前記小径軸連結部側接続部の内径は、前記小径軸連結部の内径より大きいものとなっている請求項１ないし６のいずれかに記載の軸継手。 The spacer of the rotational force transmission portion is an integral body having two cylindrical portions having the same central axis and different outer diameters, and the inner diameter of the large-diameter shaft coupling portion is the large-diameter annular leaf spring. The inner diameter of the connecting portion on the large-diameter shaft coupling portion side of the spacer is larger than the inner diameter of the large-diameter shaft coupling portion, and the inner diameter of the small-diameter shaft coupling portion is the small-diameter annular plate The shaft coupling according to any one of claims 1 to 6, wherein an inner diameter of the small-diameter shaft coupling portion side connection portion of the spacer is smaller than an inner diameter of the spring, and is larger than an inner diameter of the small-diameter shaft coupling portion. 前記回転力伝動部のスペーサーは、前記大径軸連結部側接続部と前記小径軸連結部側接続部間に設けられ、前記大径軸連結部側接続部の外径より小さく前記小径軸連結部側接続部の外径より大きい１また複数の円盤状段部を備えている請求項１ないし７のいずれかに記載の軸継手。 The spacer of the rotational force transmission part is provided between the large diameter shaft coupling part side connection part and the small diameter shaft coupling part side connection part, and is smaller than the outer diameter of the large diameter shaft coupling part side connection part. The shaft coupling according to any one of claims 1 to 7, further comprising one or a plurality of disk-shaped step portions larger than an outer diameter of the portion side connection portion. 大径の軸と連結するための大径軸連結部と、前記大径の軸より小径の軸と連結するための小径軸連結部と、前記大径軸連結部と前記小径軸連結部との間に配置され、一方の前記連結部に付与される回転力を他方の前記連結部に伝動するための回転力伝動部とを備える軸継手であって、
前記大径軸連結部は、前記大径の軸を挿入固定する大径軸用ハブ部を備える大径円筒体であり、前記小径軸連結部は、前記小径の軸を挿入固定する小径軸用ハブ部を備え、かつ、前記大径軸連結部より外径および内径がともに小さい小径円筒体であり、
前記回転力伝動部は、前記大径軸連結部の形状に対応した外径を有する短い筒状の大径軸連結部側接続部と、前記小径軸連結部の形状に対応した外径を有する短い筒状の小径軸連結部側接続部とを有するスペーサーと、前記大径軸連結部と前記スペーサーの前記大径軸連結部側接続部間に配置されかつ前記大径軸連結部の形状に対応した形状を有する大径環状板ばねと、前記小径軸連結部と前記スペーサーの前記小径軸連結部側接続部間に配置されかつ前記小径軸連結部の形状に対応した形状を有する小径環状板ばねと、前記大径軸連結部と前記大径環状板ばねを連結する大径側連結部板ばね間締結部材と、前記スペーサーの前記大径軸連結部側接続部と前記大径環状板ばねを連結する大径側スペーサー板ばね間締結部材と、前記小径軸連結部と前記小径環状板ばねを連結する小径側連結部板ばね間締結部材と、前記スペーサーの前記小径軸連結部側接続部と前記小径環状板ばねを連結する小径側スペーサー板ばね間締結部材とを備え、
前記大径環状板ばねは、向かい合う前記大径軸連結部の端面と前記スペーサーの前記大径軸連結部側接続部の端面間に収納され、前記小径環状板ばねは、向かい合う前記小径軸連結部の端面と前記スペーサーの前記小径軸連結部側接続部の端面間に収納されており、前記回転力伝動部のスペーサーは、同じ中心軸を有し、かつ外径の異なる２つの円筒部を有する一体物であることを特徴とする軸継手。 A large-diameter shaft coupling portion for coupling with a large-diameter shaft, a small-diameter shaft coupling portion for coupling with a smaller-diameter shaft than the large-diameter shaft, and the large-diameter shaft coupling portion and the small-diameter shaft coupling portion. A shaft coupling including a rotational force transmission portion disposed between and a rotational force transmission portion for transmitting a rotational force applied to one of the connection portions to the other connection portion,
The large-diameter shaft coupling portion is a large-diameter cylindrical body having a large-diameter shaft hub portion for inserting and fixing the large-diameter shaft, and the small-diameter shaft coupling portion is for a small-diameter shaft for inserting and fixing the small-diameter shaft. A small-diameter cylindrical body having a hub portion and having both an outer diameter and an inner diameter smaller than those of the large-diameter shaft coupling portion,
The rotational force transmission portion has a short cylindrical large-diameter shaft coupling portion side connection portion having an outer diameter corresponding to the shape of the large-diameter shaft coupling portion, and an outer diameter corresponding to the shape of the small-diameter shaft coupling portion. A spacer having a short cylindrical small-diameter shaft coupling portion side connection portion, and is disposed between the large-diameter shaft coupling portion and the large-diameter shaft coupling portion-side connection portion of the spacer and in the shape of the large-diameter shaft coupling portion. A large-diameter annular leaf spring having a corresponding shape, and a small-diameter annular plate disposed between the small-diameter shaft coupling portion and the small-diameter shaft coupling portion-side connecting portion of the spacer and having a shape corresponding to the shape of the small-diameter shaft coupling portion A spring, a large-diameter-side coupling portion plate spring fastening member that couples the large-diameter shaft coupling portion and the large-diameter annular leaf spring, the large-diameter shaft coupling portion-side connection portion of the spacer, and the large-diameter annular leaf spring The large-diameter side spacer leaf spring fastening member for coupling the small-diameter shaft coupling And a small-diameter-side coupling leaf spring fastening member that couples the small-diameter annular leaf spring, and a small-diameter spacer leaf spring fastening member that couples the small-diameter shaft coupling portion-side connection portion of the spacer and the small-diameter annular leaf spring. Prepared,
The large-diameter annular leaf spring is housed between an end surface of the large-diameter shaft coupling portion facing the end surface of the spacer on the large-diameter shaft coupling portion side connection portion, and the small-diameter annular leaf spring is opposed to the small-diameter shaft coupling portion facing each other. And the spacer of the rotational force transmission portion has two cylindrical portions having the same central axis and different outer diameters. A shaft coupling characterized by being a one-piece. 前記大径環状板ばねは、外縁および内縁が実質的に露出しないものとなっており、前記小径環状板ばねは、外縁および内縁が実質的に露出しないものとなっている請求項９に記載の軸継手。 10. The large-diameter annular leaf spring is configured such that an outer edge and an inner edge are not substantially exposed, and the small-diameter annular leaf spring is configured such that an outer edge and an inner edge are not substantially exposed. Shaft coupling. 前記スペーサーの前記大径軸連結部側接続部の内径は、前記大径軸連結部の内径より大きいものとなっており、前記スペーサーの前記小径軸連結部側接続部の内径は、前記小径軸連結部の内径より大きいものとなっている請求項９または１０に記載の軸継手。 An inner diameter of the large-diameter shaft coupling portion side connecting portion of the spacer is larger than an inner diameter of the large-diameter shaft coupling portion, and an inner diameter of the small-diameter shaft coupling portion-side connecting portion of the spacer is the small-diameter shaft. The shaft coupling according to claim 9 or 10, wherein the shaft coupling is larger than the inner diameter of the connecting portion. 前記大径軸連結部の前記大径軸用ハブ部は、内径が外径の（６５／１００〜７５／１００）である外内径差の少ない円筒体である請求項９ないし１１のいずれかに記載の軸継手。 The hub portion for the large-diameter shaft of the large-diameter shaft coupling portion is a cylindrical body with a small difference in outer-inner-diameter having an inner diameter of (65/100 to 75/100). The shaft coupling described. 前記大径軸連結部は、駆動軸連結部であり、前記小径軸連結部は、従動軸連結部である請求項９ないし１２のいずれかに記載の軸継手。 The shaft coupling according to any one of claims 9 to 12, wherein the large-diameter shaft coupling portion is a drive shaft coupling portion, and the small-diameter shaft coupling portion is a driven shaft coupling portion. 前記回転力伝動部のスペーサーは、前記大径軸連結部側接続部と前記小径軸連結部側接続部間に設けられ、前記大径軸連結部側接続部の外径より小さく前記小径軸連結部側接続部の外径より大きい１また複数の円盤状段部を備えている請求項９ないし１３のいずれかに記載の軸継手。 The spacer of the rotational force transmission part is provided between the large diameter shaft coupling part side connection part and the small diameter shaft coupling part side connection part, and is smaller than the outer diameter of the large diameter shaft coupling part side connection part. The shaft coupling according to any one of claims 9 to 13, further comprising one or a plurality of disk-shaped step portions larger than an outer diameter of the portion side connection portion.
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