JP2008238373A - Turning tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a turning tool capable of widely applying to a gap between a position at which a screw is tightened or loosened and a member for retaining the screw. <P>SOLUTION: This turning tool 1 including the retaining member 2 which retains the screw X on one edge side, a rotating shaft body 3 on the other edge side, and a shaft member 4 which joints the rotating shaft body 3 with the retaining member 2 has a square hole 24 formed on the other edge side of the retaining member 2, a square pole 43 to constitute the shaft member 4, and a square hole 34 formed on the one edge side of the rotating shaft body 3. The retaining member 2 and the shaft member 4, and the rotating shaft body 3 and the shaft member 4 are fitted so as not to mutually rotate and jointed so as to move in an axial direction and a diametrical direction respectively, and are supported in such a direction as to separate from each other by a spring 5, thus maintaining the joint state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  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.

  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.

  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.

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

  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.

  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, and the holding member and the shaft member have either an engaging portion or an engaging receiving portion that receives the engaging portion on the holding member side, The other side is provided on the side of the shaft member, and they are connected so as to be non-rotatable and movable in the axial direction and the radial direction, and are urged in a direction away from each other by the urging means. The rotating shaft body and the shaft member are either the engaging portion or the engaging receiving portion that receives the engaging portion on the rotating shaft body side, and the other is on the shaft member side. And non-rotatably engaged with each other in the axial direction and Linked to may move in the direction and, characterized in that the connection state is biased in a direction away from each other by the biasing means is maintained.

  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.

  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.

  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.

  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.

  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 engage with each other 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 in which the rotating shaft body and the shaft member engage with each other is a prismatic shaft body and the other is a square hole that receives the shaft body. . Accordingly, the holding member and the shaft member, and the rotating shaft body and the shaft member are engaged with each other so as not to rotate, and the configuration of the engaging portion and the engagement receiving portion that can move in the axial direction and the radial direction is simplified. Can be realized.

  In the rotating tool of the present invention, the holding member and the shaft member are detachably fitted to each other by a conical tapered portion and a tapered receiving portion that receives the tapered portion, and the tapered portion and the tapered receiving portion are fitted together. One of the two portions is provided on the holding member side, and the other is provided on the shaft member side, and is connected by the urging force of the urging means to maintain a connected state. The rotating shaft body and the shaft The member is detachably fitted to each other by a conical taper portion and a taper receiving portion that receives the taper portion, and one of the taper portion and the taper receiving portion remains on the rotating shaft body side. Is provided on the shaft member side, and is connected by an urging force of the urging means to maintain a connected state.

  According to the rotating tool of the present invention, when the holding tool is positioned at a 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 moved by the respective biasing means. The conical tapered portion and the tapered receiving portion that receives the tapered portion are maintained in a coupled 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.

  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.

  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.

  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.

  First, with reference to FIG.1 and FIG.2, the structure of the rotation tool of this embodiment is demonstrated.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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. To force. 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. .

  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.

  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.

  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.

  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.

  Furthermore, 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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  Next, another embodiment of the present invention will be described with reference to FIG.

  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.

  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.

  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.

  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.

  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. .

The longitudinal cross-sectional view of the rotation tool of this embodiment. The II-II line cross-sectional view of FIG. Explanatory sectional drawing which showed typically the usage method of the rotation tool of this embodiment The fragmentary longitudinal cross-section which shows the modification of embodiment shown in FIG. The longitudinal cross-sectional view which shows other embodiment. The figure which shows the conventional rotation tool.

Explanation of symbols

  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 (4)

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 Rotating tool characterized in that it is engaged so as to be unable to rotate 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 a biasing means to maintain the connected state. . The rotating tool according to claim 1,
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 rotating shaft characterized in that one is a prismatic shaft body and the other is a square hole that receives the shaft body. tool. In the turning tool according to claim 1 or 2,
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 A rotating tool characterized in that the other side is provided on the shaft member side on the rotating shaft body side, and is connected by the urging force of the urging means to maintain the connected state. In the turning tool according to claim 3,
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

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