JP5079366B2

JP5079366B2 - Rotating tool

Info

Publication number: JP5079366B2
Application number: JP2007085426A
Authority: JP
Inventors: 信治澤田; 俊之近藤; 健一大野
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2007-03-28
Filing date: 2007-03-28
Publication date: 2012-11-21
Anticipated expiration: 2027-03-28
Also published as: JP2008238373A

Description

本発明は、ネジ、ボルトやナットなどの螺子具を回動させて、締め付け、あるいは緩めを行う回動工具に関する。 The present invention relates to a rotating tool for rotating or tightening a screw tool such as a screw, bolt, or nut to tighten or loosen.

従来、この種の回動工具としては、図６（ａ），（ｂ）に縦断面図及び横断面図を示すように、ボルトやナットの締め付け、あるいは緩めを行うナットランナのソケット装置であって、ボルトやナットを保持するソケット部１０３とソケット部１０３の尾方に伸びる筒部１０４とを一体的に成形してなるソケット本体１０１と、ナットランナの回転軸１０２とを連結してなるものが知られている（特許文献１参照。）。かかるソケット装置では、ナットランナの回転軸１０２とソケット本体１０１とが互いに回転しないように且つ軸線方向及び径方向に動き得るように、四角穴に形成された筒部１０４の内周に遊びを設けて、四角柱のナットランナの回転軸１０２を支持させている。また、回転軸１０２の先端に軸線方向に突出するピン１０５と、筒部１０４の内周にピン１０５を挿通する環状の位置決め部材１０６を設け、ばね１０８で付勢して、位置決め部材１０６をピン１０５の頭部に嵌合させている。 Conventionally, this type of rotating tool is a nutrunner socket device for tightening or loosening bolts and nuts as shown in FIGS. 6 (a) and 6 (b). A socket body 101 formed by integrally forming a socket portion 103 for holding bolts and nuts and a cylindrical portion 104 extending toward the tail of the socket portion 103 and a rotating shaft 102 of a nut runner are connected. (See Patent Document 1). In such a socket device, a play is provided on the inner periphery of the cylindrical portion 104 formed in the square hole so that the rotation shaft 102 of the nut runner and the socket body 101 can move in the axial direction and the radial direction so as not to rotate with each other. The rotating shaft 102 of the square-column nutrunner is supported. Further, a pin 105 protruding in the axial direction is provided at the tip of the rotating shaft 102, and an annular positioning member 106 through which the pin 105 is inserted is provided on the inner periphery of the cylindrical portion 104, and is urged by a spring 108 to pin the positioning member 106. 105 is fitted to the head.

かかるソケット装置によれば、ボルトやナットを締付する際にソケット本体１０１が、ばね１０８の付勢力に対抗して後退すると、位置決め部材１０６がピン１０５の頭部から外れ、筒部１０４と回転軸１０２との間の遊びの範囲内に限って傾動が可能となる。 According to such a socket device, when the socket body 101 is retracted against the urging force of the spring 108 when tightening the bolt or nut, the positioning member 106 is detached from the head of the pin 105 and rotates with the cylindrical portion 104. Tilt is possible only within the range of play with the shaft 102.

しかしながら、かかるソケット装置では、ボルトやナットの締め付け又は緩めを行うためにソケット装置を前進させた際に、ボルトやナットを保持するソケット１０３部とその締め付け又は緩めを行う位置との間に、回転軸１０２と筒部１０４との間の遊びを超えた径方向の位置ずれ（芯ずれ）や軸方向の角度ずれがあると、これらのずれには対応できない。一方で、回転軸１０２と筒部１０４との間の遊びを大きくして、対応できるずれの範囲を大きくすると、回転軸１０２と筒部１０４との間に、がたつきが生じて締め付け又は緩めを安定的に行うことが難しくなる。
実開昭６４−５００６６号公報 However, in such a socket device, when the socket device is advanced in order to tighten or loosen the bolt or nut, it rotates between the socket 103 holding the bolt or nut and the position where the bolt or nut is tightened or loosened. If there is a radial position misalignment (center misalignment) exceeding the play between the shaft 102 and the cylindrical portion 104 or an axial angle misalignment, these misalignments cannot be handled. On the other hand, when the play between the rotating shaft 102 and the cylindrical portion 104 is increased and the range of the shift that can be handled is increased, rattling occurs between the rotating shaft 102 and the cylindrical portion 104 to tighten or loosen. It becomes difficult to carry out in a stable manner.
Japanese Utility Model Publication No. 64-50066

そこで、本発明は、以上の点に鑑み、螺子具の締め付け又は緩めを行う位置と、螺子具を保持する部材との間のずれに幅広く適合させることができる回動工具を提供することをその課題としている。 Therefore, in view of the above points, the present invention provides a rotating tool that can be widely adapted to a deviation between a position where a screw tool is tightened or loosened and a member holding the screw tool. It is an issue.

上記課題を解決するために、本発明は、螺子具を回動させる回動工具において、一端側に前記螺子具を保持する保持部材と、他端側に回転軸体と、該回転軸体と前記保持部材とを連結するシャフト部材とを備え、
前記保持部材と前記シャフト部材とは、係合部と、該係合部を受ける係合受け部とのいずれか一方を前記保持部材側に、残る他方を前記シャフト部材側に備えて、互いに回動不能に係合すると共に軸方向及び径方向に動きうるように連結され、且つ、付勢手段によって互いに離反する向きに付勢されて連結状態が維持され、
前記回転軸体と前記シャフト部材とは、係合部と、該係合部を受ける係合受け部とのいずれか一方を前記回転軸体側に、残る他方を前記シャフト部材側に備えて、互いに回動不能に係合すると共に軸方向及び径方向に動きうるように連結され、且つ、付勢手段によって互いに離反する向きに付勢されて連結状態が維持され、
前記保持部材と前記シャフト部材とが係合する係合部と係合受け部とは、一方が角柱の軸体で、他方が該軸体を受ける角穴であって、
前記回転軸体と前記シャフト部材とが係合する係合部と係合受け部とは、一方が角柱の軸体で、他方が該軸体を受ける角穴であって、
前記保持部材と前記シャフト部材とは、錐形のテーパー部と、該テーパー部を受けるテーパー受け部とによって互いに着脱自在に嵌合し、該テーパー部と該テーパー受け部とのいずれか一方が前記保持部材側に、残る他方が前記シャフト部材側に設けられると共に、前記付勢手段の付勢力によって嵌合して連結状態が維持され、
前記回転軸体と前記シャフト部材とは、錐形のテーパー部と、該テーパー部を受けるテーパー受け部とによって互いに着脱自在に勘合し、該テーパー部と該テーパー受け部とのいずれか一方が前記回転軸体側に、残る他方が前記シャフト部材側に設けられると共に、前記付勢手段の付勢力によって嵌合して連結状態が維持され、
前記保持部材と前記シャフト部材とが嵌合するテーパー部とテーパー受け部とは、該保持部材の係合部または係合受け部から連続してこれが拡径すると共に、該シャフト部材の係合受け部または係合部から連続してこれが拡径し、
前記回転軸体と前記シャフト部材とが嵌合するテーパー部とテーパー受け部とは、該回転軸体の係合部または係合受け部から連続してこれが拡径すると共に、該シャフト部材の係合受け部または係合部から連続してこれが拡径することを特徴とする。 In order to solve the above problems, the present invention provides a rotating tool for rotating a screw tool, a holding member for holding the screw tool on one end side, a rotating shaft body on the other end side, and the rotating shaft body. A shaft member that connects the holding member,
The holding member and the shaft member are provided with one of an engaging portion and an engaging receiving portion for receiving the engaging portion on the holding member side, and the other on the shaft member side. It is engaged so as to be immovable and is connected so as to be movable in the axial direction and the radial direction, and is biased in a direction away from each other by the biasing means, and the connected state is maintained.
The rotating shaft body and the shaft member are provided with either an engaging portion or an engaging receiving portion for receiving the engaging portion on the rotating shaft body side, and the other on the shaft member side, and It is connected so as to be able to move in the axial direction and the radial direction while engaging in a non-rotatable manner, and is biased in a direction away from each other by the biasing means, and the connected state is maintained,
One of the engagement portion and the engagement receiving portion with which the holding member and the shaft member are engaged is a prismatic shaft body, and the other is a square hole that receives the shaft body,
One of the engaging portion and the engagement receiving portion with which the rotating shaft body and the shaft member are engaged is a prismatic shaft body, and the other is a square hole that receives the shaft body,
The holding member and the shaft member are detachably fitted to each other by a cone-shaped tapered portion and a tapered receiving portion that receives the tapered portion, and either one of the tapered portion or the tapered receiving portion is the On the holding member side, the other remaining is provided on the shaft member side, and the connected state is maintained by fitting by the urging force of the urging means,
The rotating shaft body and the shaft member are detachably fitted to each other by a cone-shaped tapered portion and a tapered receiving portion that receives the tapered portion, and either one of the tapered portion or the tapered receiving portion is the On the rotating shaft body side, the remaining other is provided on the shaft member side, and the connected state is maintained by fitting by the urging force of the urging means,
The taper portion and the taper receiving portion in which the holding member and the shaft member are fitted are continuously expanded from the engaging portion or the engagement receiving portion of the holding member, and the engagement receiving of the shaft member. This expands continuously from the part or engaging part,
The taper portion and the taper receiving portion where the rotating shaft body and the shaft member are fitted continuously expand from the engaging portion or the engaging receiving portion of the rotating shaft body, and the engagement of the shaft member. This is characterized in that the diameter continuously increases from the receiving part or the engaging part .

本発明の回動工具では、まず、回転軸体に働く回転駆動力が、係合部と該係合部を受ける係合受け部との係合によって、シャフト部材へと伝達される。このとき、軸方向の負荷がない状態では、付勢手段によって回転軸体とシャフト部材との連結状態が維持される。一方、螺子具の締め付けや緩めを行う場合には、保持部材を螺子具の締め付け又は緩めを行う位置に当接して押圧するため、付勢手段の付勢力を超える軸方向の負荷が生じて連結状態が解かれる。その結果、回転軸体とシャフト部材との間には、それぞれ互いに軸方向及び径方向に動きうる遊びが与えられる。 In the rotating tool of the present invention, first, the rotational driving force acting on the rotating shaft is transmitted to the shaft member by the engagement between the engaging portion and the engagement receiving portion that receives the engaging portion. At this time, in a state where there is no load in the axial direction, the connection state between the rotating shaft body and the shaft member is maintained by the urging means. On the other hand, when tightening or loosening the screw tool, the holding member is pressed against the position where the screw tool is tightened or loosened, so that an axial load exceeding the biasing force of the biasing means is generated and the connection is made. The state is solved. As a result, play that can move in the axial direction and the radial direction is provided between the rotating shaft body and the shaft member.

また、同様に、シャフト部材に伝達された回転駆動力は、係合部と該係合部を受ける係合受け部との係合によって、保持部材へと伝達される。このとき、軸方向の負荷がない状態では、付勢手段によってシャフト部材と保持部材との連結状態が維持される。一方、螺子具の締め付けや緩めを行う場合には、付勢手段の付勢力を超える軸方向の負荷が生じて連結状態が解かれる。その結果、シャフト部材と保持部材との間には、それぞれ互いに軸方向及び径方向に動きうる遊びが与えられる。 Similarly, the rotational driving force transmitted to the shaft member is transmitted to the holding member by the engagement between the engaging portion and the engagement receiving portion that receives the engaging portion. At this time, in a state where there is no axial load, the connection state between the shaft member and the holding member is maintained by the biasing means. On the other hand, when tightening or loosening the screw tool, an axial load exceeding the urging force of the urging means is generated, and the connected state is released. As a result, play that can move in the axial direction and the radial direction is provided between the shaft member and the holding member.

かかる本発明の回動工具によれば、保持部材が押圧されると、保持部材とシャフト部材との間及び回転軸体とシャフト部材との間の２箇所に、それぞれ所定の遊びが生じるため、保持部材と螺子具の締め付け又は緩めを行う位置との間に芯ずれや軸方向の角度ずれがある場合にも、これらのずれに幅広く適合させることができる。特に、芯ずれに対しては、保持部材の回転軸を螺子具の締め付け又は緩めを行う軸に一致させることができると共に、上記２箇所の遊びにより、工具を移動させて保持部材を螺子具に押圧させる方向と、螺子具の締め付け又は緩めを行う方向とを一致させることができるため、螺子具の締め付け又は緩めを確実に行うことができる。また、上記２箇所の遊びを、それぞれ所定の大きさに保つことで、工具全体が大きくがたつくことも防止することができる。 According to the rotating tool of the present invention, when the holding member is pressed, predetermined play occurs in two places between the holding member and the shaft member and between the rotating shaft body and the shaft member. Even when there is a misalignment or an axial angle deviation between the holding member and the position where the screw member is tightened or loosened, it is possible to widely adapt to these deviations. In particular, with respect to misalignment, the rotation shaft of the holding member can be made to coincide with the axis for tightening or loosening the screw tool, and the tool can be moved to move the holding member to the screw tool by the play at the two positions. Since the pressing direction can be matched with the direction in which the screw tool is tightened or loosened, the screw tool can be securely tightened or loosened. In addition, by keeping the play at the two locations at a predetermined size, it is possible to prevent the entire tool from being largely rattled.

さらに、本発明の回動工具によれば、保持具を螺子具の締め付け又は緩めを行う位置に位置合わせするときには、保持部材とシャフト部材、及び回転軸体とシャフト部材が、付勢手段によって連結された状態に維持される。そのため、各連結部分にふらつきや弛みが生じるのを防止して、高い精度で位置合わせを行うことができる。 Further, according to the rotating tool of the present invention, when the holding tool is aligned with the position where the screw tool is tightened or loosened, the holding member and the shaft member, and the rotating shaft body and the shaft member are connected by the biasing means. Maintained. For this reason, it is possible to prevent the wobbling or slackening of each connecting portion and perform alignment with high accuracy.

また、本発明の回動工具において、前記保持部材と前記シャフト部材とが係合する係合部と係合受け部とは、一方が角柱の軸体で、他方が該軸体を受ける角穴であって、前記回転軸体と前記シャフト部材とが係合する係合部と係合受け部とは、一方が角柱の軸体で、他方が該軸体を受ける角穴である。これにより、保持部材とシャフト部材、及び回転軸体とシャフト部材のそれぞれが、回動不能に係合すると共に軸方向及び径方向に動きうる係合部と係合受け部との構成を簡易に実現することができる。 Further, in the rotating tool of the present invention , one of the engaging portion and the engagement receiving portion where the holding member and the shaft member are engaged is a prismatic shaft body, and the other is a square hole receiving the shaft body. a is, the rotary shaft body and said shaft member and the engagement portion and the engagement receiving portion for engaging the one is a shaft body of prismatic, Ru square hole der the other receives a shaft member. This ensures that the holding member and the shaft member, and each of the rotary shaft body and the shaft member, the configuration of the engaging portion which can move axially and radially with the engaging receiving portion with engages non-rotatably simple Can be realized.

さらに、本発明の回動工具によれば、保持具を螺子具の締め付け又は緩めを行う位置に位置合わせするときには、保持部材とシャフト部材、及び回転軸体とシャフト部材が、それぞれの付勢手段によって錐形のテーパー部と、該テーパー部を受けるテーパー受け部が勘合した連結状態に維持される。これにより、各連結部分にふらつきや弛みが生じるのを防止して、高い精度で位置合わせを行うことができる構成を簡易且つ確実に実現することができる。 Further, according to the rotating tool of the present invention, when the holding tool is aligned with the position where the screw tool is tightened or loosened, the holding member and the shaft member, and the rotating shaft body and the shaft member are respectively biased. Thus, the conical tapered portion and the tapered receiving portion that receives the tapered portion are maintained in a connected state. Accordingly, it is possible to easily and surely realize a configuration capable of performing alignment with high accuracy by preventing occurrence of wobbling or slack in each connecting portion.

本発明の回動工具において、前記保持部材と前記シャフト部材とを連結する前記テーパー部は、拡径する端部側に鍔部を有すると共に、該テーパー部を受けるテーパー受け部は、該鍔部が突き当たる段部を有し、前記回転軸体と前記シャフト部材とを連結する前記テーパー部は、拡径する端部側に鍔部を有すると共に、該テーパー部を受けるテーパー受け部は、該鍔部が突き当たる段部を有することを特徴とする。 In the rotating tool of the present invention, the tapered portion that connects the holding member and the shaft member has a flange portion on the end portion side where the diameter is increased, and the taper receiving portion that receives the tapered portion is the flange portion. The tapered portion connecting the rotary shaft body and the shaft member has a flange portion on the end side where the diameter is increased, and the taper receiving portion receiving the tapered portion is the flange portion. It has the step part which a part contacts, It is characterized by the above-mentioned.

かかる本発明の回動工具によれば、保持部材とシャフト部材とのテーパー部とテーパー受け部とが嵌り合って連結すると、そのテーパー部の端部に設けられた鍔部が、該鍔部を受ける段部に突き当たって保持される。同様に、回転軸体とシャフト部材とのテーパー部とテーパー受け部とが嵌り合って連結すると、そのテーパー部の端部に設けられた鍔部が、該鍔部を受ける段部に突き当たって保持される。そのため、それぞれのテーパー部とテーパー受け部との間の連結状態は、軸方向に掛かる負荷以外では容易に解放されない。これにより、位置合わせをする際に、回動工具を構成する部材の重み等で、テーパー部とテーパー受け部との間にずれや弛みが生ずること防止して、より高い精度で位置合わせを行うことができる。 According to the rotating tool of the present invention, when the tapered portion and the taper receiving portion of the holding member and the shaft member are fitted and connected, the flange provided at the end of the tapered portion It is held against the stepped part. Similarly, when the taper portion and the taper receiving portion of the rotating shaft body and the shaft member are fitted and connected, the flange portion provided at the end portion of the taper portion abuts against and holds the step portion that receives the flange portion. Is done. Therefore, the connection state between each tapered portion and the tapered receiving portion is not easily released except for a load applied in the axial direction. Thus, when positioning is performed, the weight of the members constituting the rotating tool is prevented from being displaced or loosened between the tapered portion and the tapered receiving portion, and the positioning is performed with higher accuracy. be able to.

次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。図１は本実施形態の回動工具の縦断面図であり、図２は図１のＩＩ−ＩＩ線横断面図であり、図３は本実施形態の回動工具の使用方法を模式的に示した説明的断面図であり、図４は図１示す実施形態の変形例を示す縦断面図であり、図５は他の実施形態を示す縦断面図である。 Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. 1 is a longitudinal sectional view of the rotating tool of the present embodiment, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIG. 3 schematically shows how to use the rotating tool of the present embodiment. FIG. 4 is a longitudinal sectional view showing a modification of the embodiment shown in FIG. 1, and FIG. 5 is a longitudinal sectional view showing another embodiment.

まず、図１及び図２を参照して、本実施形態の回動工具の構成について説明する。 First, with reference to FIG.1 and FIG.2, the structure of the rotation tool of this embodiment is demonstrated.

図１に縦断面図で示すように、本実施形態の回動工具１は、ボルトやナット等の螺子具Ｘの締め付け又は緩めを行う工具であって、例えば、ナットランナのソケット装置に相当する。回動工具１は、一端側に螺子具Ｘを保持する保持部材２と、他端側に工具１全体を回転駆動させる回転軸体３と、保持部材２と回転軸体３とを連結するシャフト部材４と、付勢手段としてのバネ５とを備える。 As shown in a longitudinal sectional view in FIG. 1, the rotating tool 1 of the present embodiment is a tool for tightening or loosening a screw tool X such as a bolt or a nut, and corresponds to, for example, a socket device of a nut runner. The rotating tool 1 includes a holding member 2 that holds the screw tool X on one end side, a rotating shaft body 3 that rotationally drives the entire tool 1 on the other end side, and a shaft that connects the holding member 2 and the rotating shaft body 3. A member 4 and a spring 5 as urging means are provided.

保持部材２は、筒状の形状であって、一端側に螺子具Ｘが嵌合するソケット２１と、他端側の内周にシャフト部材４の一端が連結するテーパー受け部２２とを備えると共に、テーパー受け部２２に続く他端側の開口部分が四角穴２４に形成されている。ソケット２１は、内部には永久磁石２３が設けられており、螺子具Ｘを吸着保持するために用いられる。 The holding member 2 has a cylindrical shape, and includes a socket 21 into which the screw X is fitted on one end side, and a taper receiving portion 22 to which one end of the shaft member 4 is connected to the inner periphery on the other end side. An opening portion on the other end side following the taper receiving portion 22 is formed in the square hole 24. The socket 21 is provided with a permanent magnet 23 and is used for attracting and holding the screw tool X.

回転軸体３は、保持部材３と同様に筒状の形状であって、一端側の内周にシャフト部材４の他端が連結するテーパー受け部３１と、他端側の内周に、図示しない電動モータの回転駆動力が伝達された回転軸Ｙが連結される連結部３２とを備えると共に、テーパー受け部３１に続く一端側の開口部分が四角穴３４に形成されている。 The rotating shaft body 3 has a cylindrical shape like the holding member 3, and has a taper receiving portion 31 where the other end of the shaft member 4 is connected to the inner periphery on one end side, and an inner periphery on the other end side. And a connecting portion 32 to which the rotary shaft Y to which the rotational driving force of the electric motor is transmitted is connected, and an opening portion on one end side following the taper receiving portion 31 is formed in the square hole 34.

シャフト部材４は、一端側に端部に向かって拡径した第１テーパー部４１と、他端側に端部に向かって拡径した第２テーパー部４２と、第１テーパー部４１と第２テーパー部４２とを繋ぐシャフト４３とを備え、第１テーパー部４１を保持部材２のテーパー受け部２２に臨ませ、第２テーパー部４２を回転軸体３のテーパー受け部３１に臨ませると共に、シャフト４３を四角穴２４，３４に挿通させるようにして、保持部材２及び回転軸体３に連結されている。 The shaft member 4 includes a first tapered portion 41 having a diameter expanded toward the end on one end side, a second tapered portion 42 having a diameter expanded toward the end on the other end side, a first tapered portion 41 and a second taper. A shaft 43 connecting the taper portion 42, the first taper portion 41 facing the taper receiving portion 22 of the holding member 2, the second taper portion 42 facing the taper receiving portion 31 of the rotary shaft body 3, and The shaft 43 is connected to the holding member 2 and the rotary shaft 3 so as to be inserted into the square holes 24 and 34.

第１テーパー部４１は、円錐の形状であって、第１テーパー部４１を受ける保持部材２のテーパー受け部２２がこの円錐に対応した形状となっており、第１テーパー部４１とテーパー受け部２２とが互いに嵌り合って面接触可能となっている。 The first taper portion 41 has a conical shape, and the taper receiving portion 22 of the holding member 2 that receives the first taper portion 41 has a shape corresponding to the cone. The first taper portion 41 and the taper receiving portion 22 are fitted to each other so that surface contact is possible.

一方、第２テーパー部４２も、円錐の形状であって、第２テーパー部４２を受ける回転軸体３のテーパー受け部３１がこの円錐に対応した形状となっており、第２テーパー部４２とテーパー受け部３１とが互いに嵌り合って面接触可能となっている。 On the other hand, the second taper portion 42 has a conical shape, and the taper receiving portion 31 of the rotating shaft body 3 that receives the second taper portion 42 has a shape corresponding to the cone. The taper receiving portion 31 is fitted to each other and can be brought into surface contact.

シャフト４３は、図２に横断面図で示すように、四角柱であって、その断面形状が、保持部材２及び回転軸体３の四角穴２４，３４を縮径した形状となっている。そのため、シャフト４３と四角穴２４，３４とは、一定の間隙を有して挿通可能となっており、互いに軸方向への動き及び径方向への一定の動きが許容されると共に、四角柱のシャフト４３を回動させた場合には、その角部が四角穴２４，３４の内壁に当接して回転駆動力が伝達される。ここで、シャフト４３と四角穴２４又は四角穴３４とのいずれか一方が、本発明の係合部に相当し、残る他方が係合受け部に相当する。 The shaft 43 is a quadrangular prism as shown in a cross-sectional view in FIG. 2, and the cross-sectional shape thereof is a shape obtained by reducing the diameter of the square holes 24 and 34 of the holding member 2 and the rotary shaft body 3. For this reason, the shaft 43 and the square holes 24 and 34 can be inserted with a certain gap, and the movement in the axial direction and the certain movement in the radial direction are allowed. When the shaft 43 is rotated, the corners thereof come into contact with the inner walls of the square holes 24 and 34 to transmit the rotational driving force. Here, either one of the shaft 43 and the square hole 24 or the square hole 34 corresponds to the engagement portion of the present invention, and the remaining other corresponds to the engagement receiving portion.

尚、図１に示すように、シャフト４３の両端部は雌ネジ４３ａ，４３ｂになっており、第１テーパー部４１の他端側及び第２テーパー部４２の一端側に設けられた雄ネジ４１ａ，４２ｂと螺合するようになっている。これにより、第１テーパー部４１を保持部材２のテーパー受け部２２に臨ませ、第２テーパー部４２を回転軸体３のテーパー受け部３１に臨ませると共に、シャフト４３を四角穴２４，３４に挿通させるように、工具１を組み立てることができる。 As shown in FIG. 1, both end portions of the shaft 43 are female screws 43 a and 43 b, and male screws 41 a provided on the other end side of the first taper portion 41 and one end side of the second taper portion 42. , 42b. As a result, the first taper portion 41 faces the taper receiving portion 22 of the holding member 2, the second taper portion 42 faces the taper receiving portion 31 of the rotating shaft body 3, and the shaft 43 extends to the square holes 24, 34. The tool 1 can be assembled so as to be inserted.

バネ５は、コイルバネであって、一端が保持部材２の他端側に、他端が回転軸体３の一端側に当接して、保持部材２及び回転軸体３を互いに離反するように付勢する。これにより、保持部材２とシャフト部材４とは、保持部材２が一端側に付勢されることにより、テーパー部４１とテーパー受け部２２とが嵌り合って面接触した状態に維持される。また、回転軸体３とシャフト部材４とは、回転軸体３が他端側に付勢されることにより、テーパー部４２とテーパー受け部３１とが嵌り合って面接触した状態に維持される。 The spring 5 is a coil spring, and is attached so that one end is in contact with the other end side of the holding member 2 and the other end is in contact with one end side of the rotating shaft body 3 so that the holding member 2 and the rotating shaft body 3 are separated from each other. Rush. Thereby, the holding member 2 and the shaft member 4 are maintained in the state where the taper portion 41 and the taper receiving portion 22 are fitted and in surface contact with each other when the holding member 2 is biased to one end side. Further, the rotating shaft body 3 and the shaft member 4 are maintained in a state where the tapered portion 42 and the taper receiving portion 31 are fitted and in surface contact with each other when the rotating shaft body 3 is biased to the other end side. .

このように、１つの付勢手段であるバネ５を保持部材２と回転軸体３との間に設けて、保持部材２と回転軸体３とを離反させるように付勢することで、保持部材２とシャフト部材４、及び回転軸体３とシャフト部材４を、それぞれ同時にテーパー部４１，４２とテーパー受け部２２，３１が面接触した連結状態に維持させることができ、工具１の構成を簡易化して全長を短くすることができる共に、工具１の小型化を図ることができる。 In this way, the spring 5 as one urging means is provided between the holding member 2 and the rotating shaft body 3 and is urged so as to separate the holding member 2 and the rotating shaft body 3. The member 2 and the shaft member 4 and the rotating shaft body 3 and the shaft member 4 can be maintained in a connected state in which the tapered portions 41 and 42 and the tapered receiving portions 22 and 31 are in surface contact with each other at the same time. The overall length can be shortened by simplification, and the size of the tool 1 can be reduced.

次に、本実施形態の回動工具１の作動について、図３に示す説明的断面図を参照して説明する。 Next, the operation of the rotating tool 1 of the present embodiment will be described with reference to an explanatory sectional view shown in FIG.

まず、回動工具１は、図示しない工業用ロボットの手首に設けられたナットランナ等に備えられて、ロボットによって、図３（ａ）に示すように、回動工具１を締め付け、あるいは緩めを行う螺子具Ｘに向かって移動される。このとき、回動工具１には、軸方向に負荷が掛かっていないため、保持部材２のテーパー受け部２２とシャフト部材４の第１テーパー部４１とが面接触した状態に維持されている。また、回転軸体３のテーパー受け部３１とシャフト部材４の第２テーパー部４２とも面接触した状態に維持されている。そのため、保持部材２側のふらつきや弛みを防止して、高い精度で位置合わせを行うことができる。 First, the rotary tool 1 is provided in a nut runner or the like provided on the wrist of an industrial robot (not shown), and the rotary tool 1 is tightened or loosened by the robot as shown in FIG. It is moved toward the screw tool X. At this time, since the load is not applied to the rotating tool 1 in the axial direction, the taper receiving portion 22 of the holding member 2 and the first taper portion 41 of the shaft member 4 are maintained in surface contact. Further, the tapered receiving portion 31 of the rotating shaft body 3 and the second tapered portion 42 of the shaft member 4 are also maintained in surface contact. Therefore, the holding member 2 side can be prevented from wobbling or loosening, and alignment can be performed with high accuracy.

次いで、図３（ｂ）に示すように、保持部材２が螺子具Ｘに当接して押圧される。保持部材２が押圧されると、バネ５の付勢力を超える軸方向の負荷が生じて、第１テーパー部４１とテーパー受け部２２との面接触が解かれ、その間に所定の遊びが生じる。同様に、第２テーパー部４２とテーパー受け部３１との面接触が解かれて、その間に所定の遊びが生じる。 Next, as shown in FIG. 3B, the holding member 2 is pressed against the screw tool X. When the holding member 2 is pressed, an axial load exceeding the urging force of the spring 5 is generated, the surface contact between the first taper portion 41 and the taper receiving portion 22 is released, and a predetermined play is generated therebetween. Similarly, the surface contact between the second taper portion 42 and the taper receiving portion 31 is released, and a predetermined play occurs between them.

さらに、四角柱のシャフト４３と、保持部材２及び回転軸体３の四角穴２４，３４とは、一定の間隙を有して挿通可能となっているため、互いに軸方向への動き及び径方向への一定の動きが許容されて、上記テーパー部とテーパー受け部との間に生ずる遊びと同様の作用を奏する。 Further, since the rectangular shaft 43 and the square holes 24 and 34 of the holding member 2 and the rotating shaft 3 can be inserted with a certain gap, they can move in the axial direction and in the radial direction. A certain amount of movement is allowed, and the same effect as play occurring between the tapered portion and the tapered receiving portion is achieved.

ここで、所定の遊びとしては、例えば、一方の中心軸に対して他方の中心軸が２°の範囲で屈折できる遊びである（図３（ｃ）参照）。尚、図３（ｂ）は、特に、保持部材２と螺子具Ｘとの間に、径方向の位置ずれ（芯ずれ）が生じている場合に相当する。 Here, the predetermined play is, for example, a play in which the other central axis can be refracted within a range of 2 ° with respect to one central axis (see FIG. 3C). Note that FIG. 3B particularly corresponds to a case where a radial positional deviation (center misalignment) occurs between the holding member 2 and the screw tool X.

そして、保持部材２が螺子具Ｘに当接して押圧されると、図示しない電動モータが低速で回転し、その回転駆動力が回転軸Ｙに伝達される。このとき、回転軸Ｙに伝達された回転駆動力は、回転軸体３の四角穴３４が回転することにより、これが四角穴３４に挿通された四角柱のシャフト４３と噛み合って係合して、回転軸体３からシャフト部材４へと伝達される。同様に、シャフト部材４に伝達された回転駆動力は、保持部材２の四角穴２４の挿通された四角柱のシャフト４３が回転することにより、これが四角穴２４と噛み合って係合して、シャフト部材４から保持部材２へと伝達される。 When the holding member 2 is pressed against the screw tool X, an electric motor (not shown) rotates at a low speed, and the rotational driving force is transmitted to the rotary shaft Y. At this time, the rotational driving force transmitted to the rotation shaft Y is engaged with the shaft 43 of the rectangular column inserted through the square hole 34 by the rotation of the square hole 34 of the rotation shaft body 3, It is transmitted from the rotary shaft 3 to the shaft member 4. Similarly, the rotational driving force transmitted to the shaft member 4 is engaged with and engaged with the square hole 24 by the rotation of the square pillar shaft 43 through which the square hole 24 of the holding member 2 is inserted. It is transmitted from the member 4 to the holding member 2.

これにより、回動工具１が低速で回転すると、保持部材２とシャフト部材４との間及び回転軸体３とシャフト部材４との間の２箇所に、それぞれ所定の遊びが生じているため、図３（ｃ）に示すように、保持部材２側が振られて、保持部材２の向きが、ソケット２１に螺子具Ｘが嵌まる向きに適合する。 Thereby, when the rotating tool 1 rotates at a low speed, predetermined play occurs in two places between the holding member 2 and the shaft member 4 and between the rotating shaft body 3 and the shaft member 4, respectively. As shown in FIG. 3C, the holding member 2 side is swung, and the direction of the holding member 2 is adapted to the direction in which the screw tool X is fitted into the socket 21.

例えば、所定の遊びとしては、一方の中心軸に対して他方の中心軸が２°の範囲で屈折できる自由度が与えられている場合には、中心軸体３の回転軸に対して、保持部材２とシャフト部材４との間で２°、回転軸体３とシャフト部材４との間で２°の計４°の範囲で、保持部材２が振られる。そして、押圧され回転する保持部材２のソケット２１が螺子具Ｘが嵌まる向きに適合する。尚、図３（ｃ）は、保持部材２と螺子具Ｘとの間に、軸方向の角度ずれが生じている場合に相当する。 For example, as a predetermined play, when a degree of freedom that allows the other central axis to be refracted within a range of 2 ° with respect to one central axis is held with respect to the rotation axis of the central shaft body 3 The holding member 2 is swung in a total range of 4 °, that is, 2 ° between the member 2 and the shaft member 4 and 2 ° between the rotary shaft body 3 and the shaft member 4. Then, the socket 21 of the holding member 2 that is pressed and rotated is adapted to the direction in which the screw tool X is fitted. Note that FIG. 3C corresponds to a case where an axial angular deviation occurs between the holding member 2 and the screw tool X.

次いで、図３（ｃ）の状態から図３（ｄ）に示すように、保持部材２に掛かる押圧力及び内部の永久磁石２３の磁力により、螺子具Ｘがソケット２１に嵌まり込んで保持される。このとき、保持部材２の回転軸が螺子具Ｘの締め付け又は緩めを行う方向と一致する。さらに、保持部材２とシャフト部材４との間及び回転軸体３とシャフト部材４との間でそれぞれ回転軸が屈折することにより、螺子具Ｘの締め付け又は緩めを行う方向と工具１の回転軸方向（回転軸体３の回転軸方向）とが一致する。この状態で、回転軸体３を螺子具Ｘに合った締め付け又は緩めの速度で回動させることにより、芯ずれが生じている場合にも、回動工具１を移動させて保持部材２を押圧する方向と、螺子具Ｘの締め付け又は緩めを行う方向とを一致させることができ、螺子具Ｘの締め付け又は緩めを確実に行うことができる。また、上記２箇所の遊びは、それぞれ所定の大きさに保たれているため、この状態で螺子具Ｘの締め付け又は緩めを行っても工具全体が大きくがたつくこともない。 Next, as shown in FIG. 3D from the state of FIG. 3C, the screw tool X is fitted and held in the socket 21 by the pressing force applied to the holding member 2 and the magnetic force of the internal permanent magnet 23. The At this time, the rotating shaft of the holding member 2 coincides with the direction in which the screw tool X is tightened or loosened. Further, the rotation axis is refracted between the holding member 2 and the shaft member 4 and between the rotary shaft body 3 and the shaft member 4, whereby the screw tool X is tightened or loosened and the rotation axis of the tool 1. The direction (the direction of the rotation axis of the rotary shaft 3) coincides. In this state, by rotating the rotating shaft 3 at a tightening or loosening speed suitable for the screw tool X, the rotating tool 1 is moved and the holding member 2 is pressed even when misalignment occurs. The direction in which the screw tool X is tightened or loosened can be matched, and the screw tool X can be securely tightened or loosened. In addition, since the play at the two locations is maintained at a predetermined size, even if the screw tool X is tightened or loosened in this state, the entire tool is not greatly shaken.

以上、詳しく説明してきたように、本発明の回動工具１によれば、保持部材２が押圧されると、保持部材２とシャフト部材４との間及び回転軸体３とシャフト部材４との間の２箇所に、それぞれ所定の遊びが生じるため、保持部材２と螺子具Ｘの締め付け又は緩めを行う位置との間に芯ずれや軸方向の角度ずれがある場合にも、これらのずれに幅広く適合させることができる。 As described above in detail, according to the rotating tool 1 of the present invention, when the holding member 2 is pressed, the holding member 2 is interposed between the shaft member 4 and the rotating shaft body 3 and the shaft member 4. Since predetermined play occurs in each of the two places, even if there is a misalignment or an axial angular deviation between the holding member 2 and the position where the screw member X is tightened or loosened, these deviations are also caused. Can be widely adapted.

尚、本実施形態で、回転軸Ｙに伝達された回転駆動力は、回転軸体３の四角穴３４が回転することにより、四角穴３４に挿通された四角柱のシャフト４３と噛み合って係合して、回転軸体３からシャフト部材４へと伝達されるが、これに限定されるものではなく、第２テーパー部４２を角錐形として、これを受けるテーパー受け部３１を角錐形に対応した形状としてもよい。この場合、回転軸Ｙに伝達された回転駆動力は、回転軸体３のテーパー受け部３１が回転することにより、シャフト部材４の第２テーパー部４２と噛み合って係合して、回転軸体３からシャフト部材４へと伝達することができ、シャフト４３を四角柱にする必要はなく円柱とすることができ、これを受ける回転軸体３の一端側の開口部も円穴とすることができる。 In the present embodiment, the rotational driving force transmitted to the rotary shaft Y is engaged with and engaged with the rectangular column shaft 43 inserted through the square hole 34 when the square hole 34 of the rotary shaft 3 rotates. Then, it is transmitted from the rotating shaft 3 to the shaft member 4, but is not limited to this. The second taper portion 42 is a pyramid shape, and the taper receiving portion 31 that receives the second taper portion 42 is a pyramid shape. It is good also as a shape. In this case, the rotational driving force transmitted to the rotation shaft Y is engaged with and engaged with the second taper portion 42 of the shaft member 4 by the rotation of the taper receiving portion 31 of the rotation shaft body 3. 3 can be transmitted to the shaft member 4, the shaft 43 does not need to be a quadrangular column, and can be a cylinder, and the opening on one end side of the rotating shaft 3 that receives this can also be a circular hole. it can.

同様に、シャフト部材４に伝達された回転駆動力は、第１テーパー部４１とテーパー受け部２２との係合のみによって回転駆動力を伝達されるが、これに限定されるものではなく、第１テーパー部４１を角錐形として、これを受けるテーパー受け部２２を角錐形に対応した形状としてもよい。この場合、シャフト部材４に伝達された回転駆動力は、第１テーパー部４１が回転することにより、保持部材２のテーパー受け部２２と噛み合って係合して、シャフト部材４から保持部材２へと伝達することができ、シャフト４３を四角柱にする必要はなく円柱とすることができ、これを受ける保持部材２の他端側の開口部も円穴とすることができる。 Similarly, the rotational driving force transmitted to the shaft member 4 is transmitted only by the engagement between the first taper portion 41 and the taper receiving portion 22, but the present invention is not limited to this. One taper portion 41 may be a pyramid shape, and the taper receiving portion 22 that receives the taper portion 41 may have a shape corresponding to the pyramid shape. In this case, the rotational driving force transmitted to the shaft member 4 is engaged with and engaged with the taper receiving portion 22 of the holding member 2 by the rotation of the first taper portion 41, and from the shaft member 4 to the holding member 2. The shaft 43 does not need to be a rectangular column and can be a cylinder, and the opening on the other end side of the holding member 2 that receives the shaft 43 can also be a circular hole.

また、本実施形態では、保持部材２とシャフト部材４、及び回転軸体３とシャフト部材４は、それぞれテーパー部とテーパー受け部によって連結状態が維持されるように構成されているが、これに限定されるものではなく、シャフト４３が四角穴２４，３４から離脱しないように簡単な抜け止めを設ける構成としてもよい。 Further, in the present embodiment, the holding member 2 and the shaft member 4, and the rotating shaft body 3 and the shaft member 4 are configured so that the connected state is maintained by the tapered portion and the tapered receiving portion, respectively. It is not limited and it is good also as a structure which provides a simple retaining so that the shaft 43 may not detach | leave from the square holes 24 and 34. FIG.

例えば、図４（ａ）に示すように、シャフト４３の両端部に大径の抜け止め部４４，４５を設けると共に、抜け止め部４４を受ける段部２５を保持部材２の内周に形成し、抜け止め部４５を受ける段部３５を回転軸体３の内周に形成するようにしてもよい。この場合、保持部材２とシャフト部材４との間、及び回転軸体３とシャフト部材４との間の連結状態が維持されて、前述の作用効果が得られると共に、テーパー部及びテーパー受け部が不要となり、工具の製造コストを削減することができる。 For example, as shown in FIG. 4A, large-diameter retaining portions 44 and 45 are provided at both ends of the shaft 43, and a step portion 25 that receives the retaining portion 44 is formed on the inner periphery of the holding member 2. The step portion 35 that receives the retaining portion 45 may be formed on the inner periphery of the rotating shaft 3. In this case, the connection state between the holding member 2 and the shaft member 4 and between the rotating shaft body 3 and the shaft member 4 is maintained, and the above-described effects can be obtained, and the taper portion and the taper receiving portion are provided. It becomes unnecessary, and the manufacturing cost of the tool can be reduced.

また、本実施形態の回動工具１の他の変形例として、図４（ｂ）に示すように、第１テーパー部４１の端部に鍔部４６を設けると共に、鍔部４６を受ける段部２６をテーパー受け部２２に形成し、同様に、第２テーパー部４２の端部に鍔部４７を設けると共に、鍔部４７を受ける段部３７をテーパー受け部４２に形成することが望ましい。 As another modification of the rotating tool 1 of the present embodiment, as shown in FIG. 4B, a step 46 is provided at the end of the first tapered portion 41 and receives the flange 46. 26 is formed in the taper receiving portion 22, and similarly, a flange portion 47 is provided at the end of the second taper portion 42, and a stepped portion 37 for receiving the flange portion 47 is preferably formed in the taper receiving portion 42.

かかる構成によれば、シャフト部材４の第１テーパー部４１と保持部材２のテーパー受け部２２とが嵌り合って面接触すると、第１テーパー部４１の端部に設けられた鍔部４６が、該鍔部４６を受ける段部２６に突き当たって保持される。同様に、シャフト部材４の第２テーパー部４２と回転軸体３のテーパー受け部３１とが嵌り合って面接触すると、第２テーパー部４２の端部に設けられた鍔部４７が、該鍔部４７を受ける段部３７に突き当たって保持される。そのため、それぞれのテーパー部４１，４２とテーパー受け部２２，３１との間の面接触状態は、軸方向に掛かる負荷以外では容易に解放されない。これにより、位置合わせをする際に、回動工具１を構成する部材２〜５の重み等でテーパー部４１，４２とテーパー受け部２２，３１との間にずれや弛みが生ずること防止して、部材２〜５をより確実に同一軸線上に保持することができ、位置合わせの精度を高めることができる。 According to this configuration, when the first taper portion 41 of the shaft member 4 and the taper receiving portion 22 of the holding member 2 are fitted and brought into surface contact, the flange portion 46 provided at the end portion of the first taper portion 41 is The flange 46 is held against the stepped portion 26 that receives the flange 46. Similarly, when the second taper portion 42 of the shaft member 4 and the taper receiving portion 31 of the rotating shaft body 3 are fitted and brought into surface contact, the flange portion 47 provided at the end of the second taper portion 42 is It abuts against the stepped portion 37 that receives the portion 47 and is held. Therefore, the surface contact state between the respective tapered portions 41 and 42 and the tapered receiving portions 22 and 31 is not easily released except for a load applied in the axial direction. As a result, when positioning is performed, the weights of the members 2 to 5 constituting the rotating tool 1 are prevented from being displaced or loosened between the tapered portions 41 and 42 and the tapered receiving portions 22 and 31. The members 2 to 5 can be more reliably held on the same axis, and the alignment accuracy can be improved.

また、本実施形態では、図３（ｂ）及び（ｃ）で、保持部材２のソケット２１を螺子具Ｘに嵌合させる際に、保持部材２を低速で回転させているが、その代わりに回動工具１をさらに螺子具Ｘ側に移動させて押圧力を大きくすることにより、保持部材２の向きを、ソケット２１に螺子具が嵌まる向きに適合させるようにしてもよい。 Further, in this embodiment, when the socket 21 of the holding member 2 is fitted to the screw tool X in FIGS. 3B and 3C, the holding member 2 is rotated at a low speed. You may make it adjust the direction of the holding member 2 to the direction in which a screw tool fits into the socket 21 by moving the rotation tool 1 further to the screw tool X side, and enlarging pressing force.

次に、本発明の他の実施形態について、図５を参照して説明する。 Next, another embodiment of the present invention will be described with reference to FIG.

本発明の他の実施形態としては、図１に示す回動工具１において、付勢手段として１つのバネを設ける代わりに、保持部材２とシャフト部材４との間に第１付勢手段としての第１バネ５１を設けて、保持部材２とシャフト部材４とを互いに離反する向きに付勢させると共に、回転軸体３とシャフト部材４との間に第２付勢手段としての第２バネ５２を設けて、回転軸体３とシャフト部材４とを互いに離反する向きに付勢させている。 As another embodiment of the present invention, in the rotating tool 1 shown in FIG. 1, instead of providing one spring as an urging means, a first urging means is provided between the holding member 2 and the shaft member 4. A first spring 51 is provided to urge the holding member 2 and the shaft member 4 in directions away from each other, and a second spring 52 as second urging means is provided between the rotating shaft body 3 and the shaft member 4. The rotating shaft body 3 and the shaft member 4 are urged away from each other.

また、かかる他の実施形態では、図１に示す回動工具１に対して、テーパー部とテーパー受け部との配置を置換している。すなわち、保持部材２に円錐のテーパー部２８ａを形成し、シャフト部材４にテーパー部２８ａを受けるテーパー受け部４８ａを設け、回転軸体３に円錐のテーパー部３９ａを形成し、シャフト部材４にテーパー部３９ａを受けるテーパー受け部４９ａを設けている。 Moreover, in such other embodiment, arrangement | positioning of a taper part and a taper receiving part is substituted with respect to the rotation tool 1 shown in FIG. That is, a conical taper portion 28 a is formed on the holding member 2, a taper receiving portion 48 a that receives the taper portion 28 a is provided on the shaft member 4, a conical taper portion 39 a is formed on the rotary shaft 3, and the shaft member 4 is tapered. A tapered receiving portion 49a for receiving the portion 39a is provided.

さらに、かかる他の実施形態では、図１に示す回動工具１に対して、四角柱と四角穴の配置を置換している。すなわち、保持部材２の他端側に四角柱２８ｂを設け、四角柱２８ｂを受ける四角穴４８ｂをシャフト部材４の一端側に形成すると共に、回転軸体３の一端側に四角柱３９ｂを設け、四角柱３９ｂを受ける四角穴４９ｂをシャフト部材４の他端側に形成している。 Further, in such another embodiment, the arrangement of the square pillar and the square hole is replaced with respect to the rotating tool 1 shown in FIG. That is, the rectangular column 28b is provided on the other end side of the holding member 2, a square hole 48b for receiving the square column 28b is formed on one end side of the shaft member 4, and a square column 39b is provided on one end side of the rotating shaft 3. A square hole 49 b that receives the square column 39 b is formed on the other end side of the shaft member 4.

かかる他の実施形態によれば、工具１の軸方向に負荷が掛かっていない状態では、第１バネ５１により、保持部材２のテーパー部２８ａとシャフト部材４のテーパー受け部４８ａとが面接触した状態に維持され、保持部材４が押圧されて軸方向に負荷が掛かると、テーパー部２８ａとテーパー受け部４８ａとの間に所定の遊びが生ずる。同様に、第２バネ５２により、回転軸体３のテーパー部３９ａとシャフト部材４のテーパー受け部４９ａとが面接触した状態に維持され、保持部材４が押圧されて軸方向に負荷が掛かると、テーパー部３９ａとテーパー受け部４９ａとの間に所定の遊びが生ずる。そのため、図１に示す回動工具１と同様の作用効果を得ることができる。 According to such another embodiment, in a state where no load is applied in the axial direction of the tool 1, the tapered portion 28 a of the holding member 2 and the tapered receiving portion 48 a of the shaft member 4 are in surface contact by the first spring 51. When the state is maintained and the holding member 4 is pressed and a load is applied in the axial direction, a predetermined play occurs between the tapered portion 28a and the tapered receiving portion 48a. Similarly, when the taper portion 39a of the rotating shaft 3 and the taper receiving portion 49a of the shaft member 4 are kept in surface contact by the second spring 52, and the holding member 4 is pressed and a load is applied in the axial direction. A predetermined play occurs between the tapered portion 39a and the tapered receiving portion 49a. Therefore, it is possible to obtain the same effect as that of the rotating tool 1 shown in FIG.

特に、他の実施形態によれば、付勢手段を第１バネ５１と第２バネ５２の２つに分割することで、第１バネ５１と第２バネ２に異なる種類のバネを用いることができる。これにより、保持部材２とシャフト部材４との間、又は回転軸体３とシャフト部材４との間のいずれか一方に遊びを生じ易くさせ、優先的に自由度を与えるようにすることができる。 In particular, according to another embodiment, different types of springs may be used for the first spring 51 and the second spring 2 by dividing the urging means into the first spring 51 and the second spring 52. it can. As a result, play can be easily generated between the holding member 2 and the shaft member 4 or between the rotating shaft body 3 and the shaft member 4, and a degree of freedom can be given preferentially. .

本実施形態の回動工具の縦断面図。The longitudinal cross-sectional view of the rotation tool of this embodiment. 図１のＩＩ−ＩＩ線横断面図。The II-II line cross-sectional view of FIG. 本実施形態の回動工具の使用方法を模式的に示した説明的断面図Explanatory sectional drawing which showed typically the usage method of the rotation tool of this embodiment 図１示す実施形態の変形例を示す部分縦断面図。The fragmentary longitudinal cross-section which shows the modification of embodiment shown in FIG. 他の実施形態を示す縦断面図。The longitudinal cross-sectional view which shows other embodiment. 従来の回動工具を示す図。The figure which shows the conventional rotation tool.

Explanation of symbols

１…回動工具、２…保持部材、３…回転軸体、４…シャフト部材、５…バネ（付勢手段）、２１…ソケット、２２…テーパー受け部、２４…四角穴（係合部又は係合受け部）、２５，２６…段部、２８…テーパー部、３１…テーパー受け部、３４…四角穴（係合部又は係合受け部）、３５，３７…段部、３９…テーパー部、４１…第１テーパー部、４２…第２テーパー部、４３…シャフト（係合部又は係合受け部）、４４，４５…抜け止め部、４６，４７…鍔部、４８，４９…テーパー受け部、５１…第１バネ（第１付勢手段）、５２…第２バネ（第２付勢手段）。 DESCRIPTION OF SYMBOLS 1 ... Turning tool, 2 ... Holding member, 3 ... Rotating shaft body, 4 ... Shaft member, 5 ... Spring (biasing means), 21 ... Socket, 22 ... Taper receiving part, 24 ... Square hole (engaging part or Engagement receiving portion), 25, 26 ... stepped portion, 28 ... tapered portion, 31 ... taper receiving portion, 34 ... square hole (engaging portion or engagement receiving portion), 35, 37 ... stepped portion, 39 ... tapered portion , 41 ... 1st taper part, 42 ... 2nd taper part, 43 ... Shaft (engagement part or engagement receiving part), 44, 45 ... Detachment part, 46, 47 ... collar part, 48, 49 ... taper receiver 51, first spring (first biasing means), 52 ... second spring (second biasing means).

Claims

A rotating tool for rotating a screw tool includes a holding member that holds the screw tool on one end side, a rotating shaft body on the other end side, and a shaft member that connects the rotating shaft body and the holding member. ,
The holding member and the shaft member are provided with one of an engaging portion and an engaging receiving portion for receiving the engaging portion on the holding member side, and the other on the shaft member side. It is engaged so as to be immovable and is connected so as to be movable in the axial direction and the radial direction, and is biased in a direction away from each other by the biasing means, and the connected state is maintained.
The rotating shaft body and the shaft member are provided with either an engaging portion or an engaging receiving portion for receiving the engaging portion on the rotating shaft body side, and the other on the shaft member side, and It is connected so as to be able to move in the axial direction and the radial direction while engaging in a non-rotatable manner, and is biased in a direction away from each other by the biasing means, and the connected state is maintained,
One of the engagement portion and the engagement receiving portion with which the holding member and the shaft member are engaged is a prismatic shaft body, and the other is a square hole that receives the shaft body,
One of the engaging portion and the engagement receiving portion with which the rotating shaft body and the shaft member are engaged is a prismatic shaft body, and the other is a square hole that receives the shaft body,
The holding member and the shaft member are detachably fitted to each other by a cone-shaped tapered portion and a tapered receiving portion that receives the tapered portion, and either one of the tapered portion or the tapered receiving portion is the On the holding member side, the other remaining is provided on the shaft member side, and the connected state is maintained by fitting by the urging force of the urging means,
The rotating shaft body and the shaft member are detachably fitted to each other by a cone-shaped tapered portion and a tapered receiving portion that receives the tapered portion, and either one of the tapered portion or the tapered receiving portion is the On the rotating shaft body side, the remaining other is provided on the shaft member side, and the connected state is maintained by fitting by the urging force of the urging means,
The taper portion and the taper receiving portion in which the holding member and the shaft member are fitted are continuously expanded from the engaging portion or the engagement receiving portion of the holding member, and the engagement receiving of the shaft member. This expands continuously from the part or engaging part,
The taper portion and the taper receiving portion where the rotating shaft body and the shaft member are fitted continuously expand from the engaging portion or the engaging receiving portion of the rotating shaft body, and the engagement of the shaft member. A rotating tool characterized in that its diameter is continuously expanded from a receiving part or an engaging part.

The rotating tool according to claim 1 ,
The tapered portion that connects the holding member and the shaft member has a flange portion on the end portion that expands the diameter, and the taper receiving portion that receives the tapered portion has a step portion against which the flange portion abuts.
The tapered portion that connects the rotating shaft body and the shaft member has a flange portion on the end portion side where the diameter is increased, and the taper receiving portion that receives the tapered portion has a step portion against which the flange portion abuts. A rotating tool characterized by