JP2013169108A - Adapter for tool connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for tool connection which enables rotation operation of an operation tool relative to a torque transmission part and also enables a common operation rod to be easily removed from the operation tool attached to a power transmission system even when the operation tool having the torque transmission part is connected with the light-weight common operation rod.SOLUTION: This invention relates to an adaptor for tool connection for connecting an operation tool, achieving a predetermined function with an operation of a rotation shaft having a torque transmission part, with a tip of a common operation rod. The adaptor for tool connection includes: a frame having a socket part formed in the torque transmission part so as to transmit the torque; a connection part connected with the frame and formed so that the common operation rod may connect therewith; magnets; and a mechanism part which changes the arrangement of the magnets and switches a state of the magnets between a first state where the magnets may be attracted to the torque transmission part and a second state where the magnets may not be attracted to the torque transmission part.

Description

  The present invention relates to a tool connection adapter for connecting a work tool to an indirect hot wire operation rod.

  2. Description of the Related Art Conventionally, as a method for performing maintenance and inspection operations on a power transmission system, an indirect hot wire method is known in which various operations are performed without an operator directly touching a power transmission system in a live line state. The work by such an indirect hot wire method uses a work tool corresponding to the work content and an indirect live wire operation rod to which the work tool is connected.

  There are various types of work tools, and one of them is equipped with a rotating shaft having a torque transmitting portion, and has a predetermined function in accordance with an operation on the rotating shaft (for example, Patent Document 1). This type of work tool is a tool-side connecting part connected to the indirect hot-line operating rod, a function part connected to the tool-side connecting part, and a function part that exhibits functions according to the work content, A drive unit that causes the function unit to perform its function, and includes a drive unit including a rotation shaft.

  The tool side connection portion is formed in a bottomed cylindrical shape and has a closed first end portion and a second end portion opened on the opposite side of the first end portion. The 1st end part of the tool side connection part is connected with the function part. The tool side connection part is formed with a slit penetrating inside and outside.

  The slit is formed so as to have a saddle shape on the outer peripheral surface of the tool side connecting portion. Specifically, the slit is a first part extending from the second end of the tool side connection part toward the first end, and a second part formed continuously from the first part, and the tool side connection part A second part extending in the circumferential direction, and a third part formed continuously from the second part and extending from the first end side toward the second end side.

  The functional unit is configured according to the use of the work tool. For example, the functional part of the work tool for holding the cable constituting the power transmission system includes a pair of holding bodies provided so as to be relatively close to and away from each other. Moreover, the functional part of the work tool for cutting the cable and dividing the covering of the overhead wire includes a pair of blade objects provided so as to be relatively close to and away from each other.

  The drive unit includes a rotating shaft having a second end opposite to the first end. A torque transmission part is provided at the first end of the rotating shaft. The torque transmitting portion is generally formed in a polygonal column shape, and receives a rotational torque acting around its own axis on a plane on the outer peripheral surface. The rotating shaft is provided so as to be rotatable around its own axis with the torque transmitting portion (first end portion) positioned in the tool side connecting portion. And the 2nd end part side of a rotating shaft is connected directly or indirectly with respect to a function part (for example, one holding body or one blade object).

  Indirect live line operation rods include a single-axis common operation rod, a biaxial rotation operation rod, and the like. As described above, when using a working tool that performs a function in accordance with an operation on the rotation shaft, there are generally two A shaft rotation operating rod is used (see, for example, Patent Document 2).

  The biaxial rotating operation rod is a rod-shaped grip portion having a first end and a second end, and is a main shaft body that can be rotated concentrically or substantially concentrically with the grip portion having electrical insulation and the grip portion. A main shaft body extending outward from the first end of the grip portion, a handle disposed on the grip portion, the handle for rotating the main shaft body about the axis, a first end portion and a second end A rod-shaped insulating portion arranged in parallel with the main shaft, a connecting portion connecting the first end of the insulating portion and the first end of the grip portion, and a second end of the insulating portion A connecting portion that is connected and can rotatably support a work tool or a tool connection adapter corresponding to the work tool, the support portion rotatably supporting the tip of the main shaft body, And a connection portion provided on the support portion so as to be concentric with or substantially concentric with the body.

  And when using the working tool equipped with the rotating shaft, the adapter for tool connection is attached to the connection part of a biaxial rotating operation rod. The adapter for tool connection is an external cylindrical insertion portion arranged concentrically or substantially concentrically with the main shaft body in a state of being attached to the connection portion, and an insertion portion that can be inserted into the tool side connection portion, and an insertion portion A shaft body having an engagement pin projecting radially outward from the outer periphery of the shaft, a first end portion and a second end portion, and a shaft body rotatably inserted concentrically with respect to the insertion portion. Prepare. The first end portion side of the shaft body is configured to be directly or indirectly connectable to the main shaft body. On the other hand, the second end portion of the shaft body is a cylindrical socket portion formed so as to be able to be externally fitted to the torque transmitting portion, and configured to be able to transmit torque to the externally fitted torque transmitting portion. A socket part is provided.

  Thus, the engaging portion is inserted from the second end of the tool side connecting portion while the engaging pin is engaged along the slit in the order of the first portion, the second portion, and the third portion. In addition to this, or at the timing before and after that, the torque transmission part of the working tool and the socket part are fitted. Accordingly, the work tool is connected to the biaxial rotation operation rod, and the rotation of the main shaft body of the biaxial rotation operation rod can be transmitted to the torque transmission portion of the work tool via the shaft body (socket portion). Therefore, by operating the handle of the biaxial rotating operation rod, the rotating shaft of the work tool rotates, and the functional unit exhibits a predetermined function.

JP 2000-209726 A JP 2000-13943 A

  By the way, depending on the work contents for the power transmission system, when it is necessary to remove the biaxial rotation operation rod from the work tool attached to the power transmission system, or when it is preferable to remove the biaxial rotation operation rod from the work tool There is. However, since the work tool attached to the power transmission system is suspended in the power transmission system and cannot be maintained in a fixed posture, it is difficult to remove the biaxial rotating operation rod.

  More specifically, when removing the biaxial rotary operation rod from the work tool, the engagement pin is moved along the slit (from the third part to the first part, contrary to the procedure for connecting the work tool. Move towards). That is, since the first part and the third part constituting the slit extend in different directions with respect to the second part, the biaxial rotation operation rod is pushed and pulled with respect to the work tool attached to the power transmission system. Thus, the engagement pin in the third part is guided to the first part.

  However, since the work tool mounted on the power transmission system is placed in an unstable state, as described above, the engagement pin moves smoothly along the slit even if the biaxial rotation operation rod is pushed and pulled. It is difficult to smoothly remove the biaxial rotary operation rod from the work tool.

  In such a situation, without adopting a configuration in which the engagement pin is engaged with the slit, the insertion portion is simply configured to be detachable with respect to the tool side connection portion, so that the biaxial rotation operation rod for the working tool is obtained. It is also conceivable to make the attachment and removal easy. However, in the case of a work tool equipped with a torque transmission part (rotary shaft), the work tool and the biaxial rotary operation rod are used while the functional part of the work tool is functioning (while the torque transmission part is rotated). If the connection between the rotating shaft and the torque transmission part is not maintained (connection in a state where torque transmission is possible), the biaxial rotating operation rod can be removed from the work tool during the work. There is a risk that it will fall off carelessly, and the operability will be hindered. In addition, the biaxial rotating operation rod is heavier than the single-shaft common operation rod not provided with the main shaft body and the handle, and the operability during work is very poor.

  Therefore, in view of such circumstances, the present invention can perform a rotation operation on the torque transmission part of the work tool even if the work tool having the torque transmission part is connected to the single-shaft common operation rod. It is an object of the present invention to provide a tool connection adapter that can easily remove a common operation rod from a work tool attached to a power transmission system.

  The adapter for connecting a tool according to the present invention is equipped with a rotating shaft having a torque transmitting portion at an end thereof, and a working tool that performs a predetermined function in accordance with a rotating operation of the rotating shaft is a single shaft having electrical insulation. A tool connection adapter for connecting to the tip of a common operating rod of the type, formed to be externally fitted to the torque transmission part, and capable of torque transmission in a state of being externally fitted to the torque transmission part A frame having a cylindrical socket portion configured, a connection portion coupled to the frame and configured to be concentrically or substantially concentric with the socket portion and connectable to the common operation rod; and magnetically attached to the torque transmission portion A magnet that generates a possible magnetic force, a first state in which the arrangement of the magnet is changed, and the magnet can be magnetically attached to the torque transmission portion on which the socket portion is externally fitted, and the socket portion is outside The torque that was fitted The magnet is characterized by comprising a mechanism capable of switching to the second state non magnetically attracted against reach unit. Here, “changing the arrangement of the magnets” means changing the position, orientation, posture, etc. of the magnets.

  According to the tool connection adapter having the above-described configuration, the connection portion is connected to the tip of the common operation rod when performing the indirect hot wire operation. And the socket part of a flame | frame is externally fitted with respect to the torque transmission part of a working tool. In this state, when the operator rotates the common operation rod around the axis, the rotation torque of the common operation rod is transmitted to the torque transmission portion via the socket portion of the frame, and the rotation shaft of the work tool rotates. Thereby, the work tool exhibits a predetermined function. And as above-mentioned, the adapter for tool connection of the said structure is the state in which the magnet became a 1st state by the mechanism part in the state in which the socket part was externally fitted by the torque transmission part. The torque transmission part in the socket part is magnetically attached, and the entire work tool is firmly connected to the tool connection adapter. That is, the common operating rod is connected to the work tool so as not to drop off by the magnetic force of the magnet provided in the tool connection adapter. Therefore, the common operation rod is not accidentally dropped from the work tool while the operator operates the common operation rod. Further, the common operation rod does not include a main shaft body, a handle, or the like unlike the biaxial rotation operation rod. Therefore, by using the tool connection adapter having the above-described configuration, the work can be performed with a lightweight common operation rod, and the operability is further improved.

  Then, when the common operation rod is removed from the work tool in a state where the work tool performs a predetermined function, if the magnet is placed in the second state by the mechanism part, torque transmission in the socket part is performed. The magnet cannot be magnetically attached to the part, and the connection between the work tool and the tool connection adapter is released. Therefore, the operator pulls the common operation bar in one direction, so that the socket part is detached from the torque transmission part, and the entire common operation bar is removed together with the tool connection adapter from the work tool that exhibits a predetermined function.

  As described above, the tool connection adapter having the above-described configuration can perform the rotation operation on the torque transmission portion of the work tool even when the work tool is connected to the common operation rod, and is attached to the power transmission system. It is possible to obtain an excellent effect that the common operation rod can be easily removed from the work tool (the work tool exhibiting a predetermined function).

  As one aspect of the present invention, the frame is coupled to the connection portion so as to be rotatable about the axis of the socket portion, and the mechanism portion is a second end opposite to the first end portion to which the magnet is attached. And a concentric or substantially concentric with the socket portion in a state where the first end portion is directed to the socket portion side and the second end portion is directed to the connection portion side. A magnet holder that is arranged in the frame so as to be movable in the axial direction and is not rotatable relative to the frame, and a rotary body that is rotatably provided at a fixed position. A rotating body screwed on an outer periphery of the magnet holder, a gear mechanism capable of transmitting a rotating torque from the common operation rod to the frame and the rotating body, and the rotating torque being the torque transmitting portion. Reach the required torque against A torque limiter that prevents the operation of the gear mechanism when the rotational torque exceeds a required torque for the torque transmission unit, and the magnet holder is configured to prevent the rotation of the gear mechanism. A first position where the magnet moves in the axial direction by rotation and the magnet is disposed in the vicinity of the socket portion and enters the first state, and the magnet is separated from the socket portion and enters the second state. The second position may be provided so that the position can be changed.

  In this way, when the operator rotates the common operation rod in a state where the common operation rod is connected to the connection portion, the rotational torque of the common operation rod is transmitted to the rotating body and the frame via the gear mechanism. However, since the torque limiter prevents the operation of the gear mechanism until the rotational torque reaches the required torque for the torque transmission unit, the frame and the rotating body rotate together with the common operation rod. Accordingly, the rotating shaft rotates with the rotational torque transmitted from the socket part to the torque transmission part, and the operating tool exhibits a predetermined function.

  Since the magnet holder is provided so as not to rotate relative to the frame around the axis, as described above, when the frame and the rotor rotate together with the common operation rod, the magnet holder also It rotates together with the common operation rod. Accordingly, when the magnet holder is disposed in the first position in a state where the socket portion is externally fitted to the torque transmission portion (when the rotating shaft is rotated), the rotational torque is a necessary torque for the torque transmission portion. (Until the rotating shaft is rotated and the work tool performs its predetermined function), the magnet placed near the socket part is magnetically attached to the torque transmission part in the socket part, and the entire work tool is connected to the tool. Maintain a strong connection to the common operating rod via the adapter.

  Then, when the working tool performs its function, the rotation resistance (load) of the common operation rod increases, so that the worker rotates the common operation rod while increasing the rotational torque with respect to the common operation rod. When the rotation torque of the common operation rod exceeds the required torque for the torque transmission unit, the torque limiter allows the gear mechanism to operate, so that the rotation torque of the common operation rod is transmitted to the rotating body via the gear mechanism and rotated. The body rotates at a fixed position (around the magnet holder) independently of the frame. Accordingly, the magnet holder that is provided on the frame so as not to rotate and is movable in the axial direction moves in the axial direction while rotating integrally with the frame. That is, the magnet holder moves in the axial direction by the rotation of the screwed rotating body. When the magnet holder reaches the second position, the magnet is separated from the socket portion, and the magnetic force of the magnet does not reach the torque transmission portion. Thereby, a magnet will be in the state which cannot be magnetically attached with respect to the torque transmission part in a socket part.

  Therefore, when the rotational torque of the common operation rod exceeds the required torque for the torque transmission part (when the working tool performs a predetermined function by rotating the rotary shaft), the magnet is magnetically attached to the torque transmission part in the socket part. It will be cancelled | released and it will be in the state which can remove a common operating rod easily from a working tool.

  In this case, the gear mechanism meshes with a sun gear provided concentrically with the socket portion, rotatably, with an internal gear fixed to the frame concentrically with the socket portion, and with the sun gear and the internal gear. A planetary gear, wherein the sun gear is formed integrally with the rotating body, the planetary gear is attached to a support fixed to a connecting portion, and the torque limiter transmits the torque to the torque transmission Until at least one of the sun gear, the internal gear, and the planetary gear is prevented from rotating until reaching a required torque for a portion, and when the rotational torque exceeds a required torque for the torque transmitting portion, the sun gear, It is preferable that at least one of the internal gear and the planetary gear is allowed to rotate.

  In this way, when the common operation rod is rotated, the support fixed to the connection portion rotates together with the common operation rod, and the planetary gear attached to the support attempts to revolve around the sun gear. To do. However, the torque limiter prevents rotation of at least one of the sun gear, the internal gear, and the planetary gear until the rotational torque of the common operation rod reaches the required torque for the torque transmission unit. Neither the sun gear, the internal gear, nor the planetary gear rotate independently until the function is exhibited. Accordingly, the frame and the rotating body rotate together with the common operation rod, and the rotational torque is transmitted from the socket portion to the torque transmitting portion, so that the operating tool exhibits a predetermined function. Further, the rotating body formed integrally with the sun gear does not rotate until the working tool performs a predetermined function, and the magnet holding body is maintained at the first position. Therefore, until the work tool performs a predetermined function, the entire work tool is maintained in a state of being firmly connected to the tool connection adapter.

  Then, when the work tool exhibits a function of electrically connecting while holding the cable, the rotating shaft (torque transmission portion) of the work tool is not able to rotate or is not substantially rotatable. Therefore, when the rotation torque of the common operation rod becomes equal to or greater than the required torque for the torque transmission part (torque that the work tool exhibits its function), the rotation of the frame and the internal gear engaged with the torque transmission part of the rotary shaft is prevented. . In this state, the torque limiter allows rotation of the planetary gear because a rotational torque greater than the required torque for the torque transmitting portion acts on the support coupled to the connection portion. Accordingly, the planetary gear rotates the sun gear while revolving around the sun gear. Thereby, the magnet holding body is screwed by the sun gear (rotating body) and moves in the axial direction, and the magnet is separated from the socket portion (moves toward the second position). When the magnet holder reaches the second position, the magnetic force of the magnet does not affect the torque transmission unit, and the magnetism of the magnet with respect to the torque transmission unit is released. Accordingly, the common operation rod can be easily removed from the work tool after the work tool has a predetermined function.

  As another aspect of the present invention, another magnet is fixed to the torque transmission portion, and the magnet is disposed in the vicinity of the socket portion with different magnetic poles facing the socket portion side and the connection portion side. The mechanism unit may be configured to rotate the magnet around an axis extending along a boundary between the different magnetic poles.

  If it does in this way, it can switch to the state which connected the tool for work, and the state which canceled the connection by reversing a magnet by a mechanism part. More specifically, the first state is set when the magnetic pole on the socket side of the magnet in the frame is different from the magnetic pole of another magnet of the torque transmitting unit in the work tool to be connected. That is, if the magnetic poles (polarity) of the magnets in the frame and the magnets fixed to the torque transmission part in the socket part are different from each other, these magnets are attracted to each other and firmly magnetized. Therefore, the entire work tool is firmly connected to the tool connection adapter. That is, the common operation rod is connected in a state in which it cannot be detached from the work tool by the magnetic force of the magnet provided in the tool connection adapter.

  And the magnetic pole by the side of the socket part of the magnet in a flame | frame will be in a 2nd state in the same state as the magnetic pole of another magnet of the torque transmission part in the working tool used as connection object. In this way, when another magnet fixed to the torque transmission part and the magnetic pole (polarity) of the magnet in the frame are the same, these magnets repel each other, and the tool from the working tool (torque transmission part) The connection adapter will be pushed away. Therefore, after the work tool performs its function, the common operation rod can be easily detached from the work tool by reversing the magnet (rotating 180 °) by the mechanism unit.

  In this case, the mechanism part is a holding part that holds the magnet and a shaft part that is formed continuously with the holding part so as to extend along the boundary of the magnetic pole, and is rotatably supported by the frame. A magnet holder having a shaft portion, a first pulley attached to the shaft portion, a second pulley rotatably provided about an axis parallel to the first pulley, and a first pulley An endless belt spanned between one pulley and a second pulley, an operation lever that passes through the frame and is movable in a predetermined direction, and a second pulley and an operation lever are operatively operated. It is preferable that the link mechanism is configured to rotate the second pulley within a range of 180 ° by an operation on the operation lever.

  According to the said structure, a link mechanism act | operates in response to operation | movement of an operation lever, and rotates a 2nd pulley in the range of 180 degrees. As a result, the first pulley receives the rotation of the second pulley via the endless belt and rotates in the range of 180 ° in the same manner as the second pulley. Along with the first pulley, the magnet holder rotates in the range of 180 ° with the shaft portion as the rotation center, and accordingly, the magnet held by the magnet holder holding portion also rotates the shaft portion around the shaft portion. And rotate within a range of 180 °.

  As a result, the state in which the magnetic pole on the socket side of the magnet in the frame is different from the magnetic pole of another magnet in the torque transmitting part in the target work tool (the first state), and the magnet socket in the frame The magnetic pole on the part side can be switched to the same state (second state) as the magnetic pole of another magnet of the torque transmitting part in the target working tool.

  As described above, the tool connection adapter according to the present invention can perform a rotation operation on the torque transmission portion of the work tool even if the work tool having the torque transmission portion is connected to the single-shaft common operation rod. In addition, it is possible to achieve an excellent effect that the common operation rod can be easily removed from the work tool attached to the power transmission system.

FIG. 1 is an overall schematic view in which a part of a common operation rod for connecting a tool connection adapter according to the first embodiment and the second embodiment of the present invention is omitted. FIG. 2 is a schematic cross-sectional view of a PD clamp that is an example of a work tool connected to the tool connection adapter according to the first and second embodiments of the present invention. FIG. 3 is an overall view of the adapter for tool connection according to the first embodiment of the present invention, wherein (a) is a plan view and (b) is a front view. FIG. 4 is a longitudinal sectional view of the tool connection adapter according to the first embodiment of the present invention. FIG. 5 is a view for explaining a method of using the tool connection adapter according to the first embodiment of the present invention. FIG. 5A shows a work tool (a tool connection adapter connected to a common operation rod). (B) is a state diagram in a state in which the function of the work tool (PD clamp) (the function of electrically connecting the cable is clamped) is exhibited. is there. FIG. 6 is a diagram for explaining a method of using the tool connection adapter according to the first embodiment of the present invention, wherein (a) is a tool connection adapter connected to a common operation rod and a work tool ( FIG. 7 is a state diagram in a state in which the connection with the PD clamp (magnetic attachment by a magnet) is released, and FIG. 5B is a state diagram in a state in which the common operation rod is removed from the work tool (PD clamp). FIG. 7 is an overall view of the tool connection adapter according to the second embodiment of the present invention, in which (a) is a plan view, (b) is a front view, and (c) is a side view. FIG. FIG. 8 is a longitudinal sectional view of the tool connection adapter according to the second embodiment of the present invention. FIG. 9 is a schematic cross-sectional view for explaining the operation of the tool connection adapter (mainly a link mechanism) according to the second embodiment of the present invention, in which (a) shows another magnet having a torque transmitting portion. It is a state figure in the state where the magnetic pole different from the magnetic pole of is arranged toward the socket part side, and (b) arranges the same magnetic pole as the magnetic pole of another magnet of the torque transmission part toward the socket part side. FIG. FIG. 10 is a diagram for explaining a method of using the tool connection adapter according to the second embodiment of the present invention. FIG. 10A is a diagram illustrating a work tool (a tool connection adapter connected to a common operation rod). (B) is a state diagram in a state in which the function of the work tool (PD clamp) (the function of electrically connecting the cable is clamped) is exhibited. is there. FIG. 11 is a diagram for explaining a method of using the tool connection adapter according to the second embodiment of the present invention, wherein (a) is a tool connection adapter connected to a common operation rod and a work tool ( FIG. 7 is a state diagram in a state in which the connection with the PD clamp (magnetic attachment by a magnet) is released, and FIG. 5B is a state diagram in a state in which the common operation rod is removed from the work tool (PD clamp).

  Hereinafter, a tool connection adapter according to a first embodiment of the present invention will be described with reference to the accompanying drawings. Prior to the description of the tool connection adapter, the common operation bar and the work tool which are prerequisites will be outlined.

  First, the common operation bar will be described. As shown in FIG. 1, the common operation rod is an insulating portion 60 having electrical insulation, and has a rod-like insulating portion 60 having a second end portion opposite to the first end portion, and various working tools. 7 (so-called tip tool) is connectable to the tool connecting portion 65, and the tool connecting portion 65 is connected to the first end of the insulating portion 60.

  The predetermined range on the second end side of the insulating portion 60 is a grip portion 61 that is gripped by an operator when working. In addition, an operation rod connection portion 62 to which a tool connection portion 65 of another common operation rod 6 can be connected is provided at the second end portion of the insulating portion 60. That is, this kind of common operation rod 6 can be extended by connecting another common operation rod 6.

  The tool connecting portion 65 is an external cylindrical fitting portion 66 having a base end portion and a tip end portion in one direction, and the base end portion is fixed to the insulating portion 60 so as to be concentric or substantially concentric with the insulating portion 60. A fitting pin 66 that protrudes radially outward from the outer periphery of the fitting portion 66; and a biasing pin 68 that protrudes outward in the axial direction from the tip of the fitting portion 66. The urging pin 68 is inserted into the insertion portion 66 so as to be concentric with the insertion portion 66, and is provided so as to be movable in the axial direction. The urging pin 68 is urged outward by a urging member (for example, a spring) (not shown) built in the fitting portion 66 and protrudes from the tip of the fitting portion 66 in a normal state.

  Next, the working tool will be described. As shown in FIG. 2, the work tool is equipped with a rotating shaft 79 having a torque transmitting portion 79 a at an end thereof, and is configured to exhibit a predetermined function in accordance with a rotation operation of the rotating shaft 79.

  Here, as a specific example of the work tool 7, a high-pressure cutout bypass clamp (hereinafter referred to as a PD clamp) used to form a bypass in the power transmission system when the cutout in the power transmission system is damaged is taken as an example. explain. The PD clamp 7 is an existing one, and includes a tool side connection portion 70 connected to the indirect hot-line operating rod and a function portion 71 connected to the tool side connection portion 70, and a function ( The function part 71 which exhibits the function which clamps the cable C in a conduction | electrical_connection state), and the drive part 72 which makes the function part 71 exhibit a function are provided.

  More specifically, the PD clamp 7 is a main body 74 having a first end and a second end in one direction, and has a tool-side connection portion 70 on the first end side, and on the second end side. A main body 74 having a function accommodating portion 73 in which the functional portion 71 is disposed is provided. The main body 74 is a resin molded product having electrical insulation.

  The tool side connection part 70 is formed in a cylindrical shape and has a first end and a second end. The first end of the tool side connection portion 70 is opened outward, and the second end of the tool side connection portion 70 is connected to the function accommodating portion 73. In addition, since this PD clamp 7 is an existing one, a slit (not numbered) having a saddle shape is formed in the tool-side connecting portion 70. This slit is used for connecting a tool according to the present embodiment. It is not utilized in the relationship with the adapter 1.

  The function accommodating portion 73 is formed with a cable introduction path 75 capable of introducing the cable C in a direction (hereinafter referred to as a second direction) orthogonal to a direction in which the center line of the tool side connection portion 70 extends (hereinafter referred to as a first direction). Has been. The cable introduction path 75 opens on one wall surface of the pair of wall surfaces of the function accommodating portion 73 in the second direction, and is a direction orthogonal to the first direction and the second direction (hereinafter referred to as the third direction). Are opened at each of the pair of side wall surfaces of the function accommodating portion 73. Thereby, the cable C extending in the third direction can be introduced into the function accommodating portion 73.

  The main body 74 includes a partition wall 76 at the boundary between the tool side connection portion 70 and the function accommodating portion 73. That is, the main body 74 includes a partition wall portion 76 that partitions the inside of the tool side connection portion 70 and the inside of the function accommodating portion 73. The partition wall portion 76 is provided with a screw hole S that is concentric with the tool side connection portion 70 and penetrates in the first direction.

  The functional part 71 of the PD clamp 7 includes a pair of sandwiching bodies 77 and 78 provided so as to be able to contact and separate from each other. The pair of sandwiching bodies 77 and 78 are arranged side by side in the first direction so as to sandwich the cable introduction path 75. And one clamping body 77 arrange | positioned at the 2nd end side of the main body 74 among a pair of clamping bodies 77 and 78 is the needle-like part 77a which has a front-end | tip and a base end, and the base end of the needle-like part 77a. And a base 77 b fixed to the inner wall surface of the function accommodating portion 73. The needle-like portion 77a is arranged so as to extend in the first direction with its tip directed toward the cable introduction path 75.

  Of the pair of sandwiching bodies 77 and 78, the other sandwiching body 78 disposed on the first end side of the main body 74 is formed in a block shape. The surface of the other holding body 78 on the cable introduction path 75 side is formed by an arc surface corresponding to the outer periphery of the cable C, and the other holding body 78 has the center line of curvature of the arc surface positioned in the third direction. It is arranged in the state. Although not shown, the PD clamp 7 has a cable connecting portion to which a bypass cable can be electrically connected, and the cable connecting portion is electrically connected to one clamping body 77.

  The drive unit 72 is a rotary shaft 79 having a first end portion and a second end portion, the rotary shaft 79 having a torque transmission portion 79a formed at the first end portion, and a second end of the rotary shaft 79. On the other hand, a connecting seat 80 connected to be rotatable about the axis of the rotating shaft 79 is provided. The torque transmission part 79a of the rotating shaft 79 is formed in a polygonal column shape (in the present embodiment, a hexagonal column shape). A screw groove is provided on the outer periphery of the rotation shaft 79 from the torque transmission portion 79a to the second end portion. That is, the rotating shaft 79 is screwed into the screw hole S provided in the partition wall portion 76 of the main body 74 in a state where the torque transmission portion 79 a is positioned in the tool side connection portion 70. The other sandwiching body 78 is connected to the connecting seat 80.

  The PD clamp 7 is as described above. When the rotational torque is transmitted to the torque transmitting portion 79a, the rotating shaft 79 moves around the axis while moving in the axial direction (first direction). Accordingly, the other sandwiching body 78 comes in contact with and separates from the one sandwiching body 77. Accordingly, the PD clamp 7 moves the other holding body 78 toward the one holding body 77 in a state where the cable C is introduced from the cable introduction path 75, so that the cable C is moved to the pair of holding bodies 77 and 78. Further, the needle-like portion 77a of one of the sandwiching bodies 77 is inserted into the sheath of the cable C so as to be electrically connected to the core wire Ca of the cable C. The PD clamp 7 is attached to two places of the cable C that constitutes the power transmission system when configuring the bypass. Therefore, a bypass is formed by connecting a cable to each cable connection portion of the two PD clamps 7.

  The adapter for tool connection according to the present embodiment is intended for the shared operation rod 6 and the work tool 7 having the above-described configuration. As shown in FIGS. 3 (a) and 3 (b), the adapter is used for the torque transmission portion 79a. A frame 2 having a cylindrical socket portion 20 formed so as to be externally fitted and configured to be able to transmit torque in a state of being externally fitted to the torque transmission portion 79a, and connected to the frame 2, and connected to the socket portion 20 And a concentric or substantially concentric connecting portion 3 that can be connected to the common operating rod 6, a magnet 4 that generates a magnetic force that can be magnetically attached to the torque transmitting portion 79 a (see FIG. 3A), The first state in which the magnet 4 can be magnetically attached to the torque transmission part 79a to which the socket part 20 is fitted and the magnet 4 to the torque transmission part 79a to which the socket part 20 is fitted is changed. Can be switched to the second state where magnetizing is not possible And a mechanism 5 (see Figure 3 (a)).

  As shown in FIG. 4, the frame 2 according to the present embodiment is formed in the shape of a stepped bar and has a first end and a second end. That is, the frame 2 is a small-diameter portion 2a having a first end and a second end, and a large-diameter portion 2b having a first end and a second end, the first end being the first end of the small-diameter portion 2a. And a large diameter portion 2b connected to the. The small diameter portion 2a is formed with a through hole penetrating in one direction (hereinafter, this direction is referred to as a first direction in conjunction with the description of the PD clamp 7). A substantially half region on the second end side of the small diameter portion 2a in the through hole is formed in a polygonal hole shape. A substantially half region on the first end side of the small diameter portion 2a in the through hole is formed in a round hole shape having a smaller diameter than the polygonal hole on the second end side. And the groove | channel extended in a 1st direction is formed on the internal peripheral surface which demarcates the through hole of the substantially half area | region of the 1st end side of the small diameter part 2a. The outer diameter of the small diameter portion 2 a is set to be approximately the same as the inner diameter of the tool side connection portion 70 of the work tool 7. In the present embodiment, the length of the small diameter portion 2 a in the first direction is set to be equal to or longer than the length in the first direction of the tool side connection portion 70 of the work tool 7. Thereby, the substantially half area | region of the 2nd end side of the small diameter part 2a can be inserted concentrically with respect to the tool side connection part 70 of the working tool 7, and can transmit torque with respect to the torque transmission part 79a. The socket part 20 that can be externally fitted in a state is configured.

  The outer diameter of the large diameter part 2b is set larger than the outer diameter of the small diameter part 2a. The large-diameter portion 2b includes a cylindrical portion 21 having a first end and a second end, a first annular portion 22 concentrically connected to the first end of the cylindrical portion 21, and a second end of the cylindrical portion 21. And a second annular portion 23 concentrically connected. The inner hole of the first annular portion 22 is formed to have the same diameter as the round hole portion of the through hole of the small diameter portion 2a, and is continuous with the round hole portion of the through hole. A groove that is continuous with the groove formed in the small-diameter portion 2a is formed on the peripheral wall that defines the inner hole of the first annular portion 22. That is, the round hole portion of the through hole in the small diameter portion 2a and the inner hole of the first annular portion 22 constitute an insertion hole 24 into which a magnet holder 50 described later is inserted so as to be movable in the axial direction. The grooves of the portion 2a and the first annular portion 22 constitute a guide groove 25 for preventing the magnet holder 50 from rotating. A support body 54 (a column portion 54a), which will be described later, is inserted through the inner hole of the second annular portion 23. Thereby, the frame 2 according to the present embodiment is provided to be rotatable around the axis of the socket portion 20.

  The connecting portion 3 has a first end and a second end, and has a cylindrical portion 30 set to have a larger diameter than the large-diameter portion 2b of the frame 2, and a closing for closing the first end of the cylindrical portion 30. Part 31. A slit 32 penetrating inward and outward is formed in the cylindrical portion 30 of the connecting portion 3. The slit 32 is formed on the outer peripheral surface of the cylindrical portion 30 so as to exhibit a T shape. That is, the slit 32 has a first slit portion 32a extending from the second end of the cylindrical portion 30 toward the first end, a first slit portion 32a extending in the circumferential direction of the cylindrical portion 30, and having a first end and a second end. Two slit portions 32b, the second slit portion 32b between the first end and the second end being continuous with the first slit portion 32a, and the first end and the second end of the second slit portion 32b, respectively. It has a pair of continuous third slit portions 32 c and a third slit portion 32 c extending from the first end side of the cylindrical portion 30 toward the second end side.

  The blocking part 31 has a first surface and a second surface opposite to the first surface, and the first surface faces the tubular portion 30 side. And the recessed part 33 in which the urging | biasing pin 68 is inserted is provided in the 1st surface concentric with the cylindrical part 30, or substantially concentric. On the other hand, a support 54 to which a planetary gear 52c of a gear mechanism 52 described later is attached is fixed to the second surface. The support 54 will be described later together with the gear mechanism 52.

  A permanent magnet is adopted as the magnet 4. The magnetic force of the magnet 4 is set so as to be able to counter the load of the common operation rod 6 when it is magnetically attached to the rotary shaft 79 (torque transmission portion 79a) of the work tool 7.

  The mechanism unit 5 according to the present embodiment is a shaft-shaped magnet holder 50 having a first end to which the magnet 4 is attached and a second end opposite to the first end, and the first end is connected to the socket 20 side. And in the state where the second end portion is directed to the connection portion 3 side, it is arranged in the frame 2 so as to be concentric or substantially concentric with the socket portion 20, and is movable in the axial direction and with respect to the frame 2. Commonly used with a magnet holder 50 provided so as not to be relatively rotatable around an axis and a rotary body 51 provided so as to be rotatable at a fixed position and screwed onto the outer periphery of the magnet holder 50. While the gear mechanism 52 that transmits the rotational torque of the operating rod 6 to the rotating body 51 and the frame 2 and the operation of the gear mechanism 52 is blocked until the rotational torque of the common operating rod 6 reaches the required torque for the torque transmitting portion 79a, Rotating torque of common operation rod 6 is torr Beyond the need torque for transmitting unit 79a and a torque limiter 53 to permit the actuation of the gear mechanism 52.

  The magnet holder 50 is moved in the axial direction by the rotation of the rotating body 51, and the magnet 4 is disposed in the vicinity of the socket portion 20 to be in the first state, and the magnet 4 is separated from the socket portion 20. Thus, the position can be changed to the second position in the second state.

  This will be described more specifically. A recess 50 a for accommodating the magnet 4 is formed on the end surface of the first end of the magnet holder 50. And the magnet 4 is being fixed with respect to the magnet holding body 50 within the recessed part 50a so that it cannot drop off. The magnet holder 50 is disposed concentrically in the insertion hole 24 of the frame 2 (a hole formed by the round hole portion of the through hole of the frame 2 and the inner hole of the first annular portion 22). More specifically, the magnet holder 50 according to the present embodiment is formed in the shape of a stepped bar with the first end portion side set to have a larger diameter than the second end side. The outer diameter of the first end side (large diameter side) of the magnet holder 50 is set corresponding to the diameter of the round hole of the small diameter portion 2 a of the frame 2. Thereby, the magnet holding body 50 is guided by the inner peripheral surface that defines the insertion hole 24 of the frame 2 on the first end side, and is provided so as to be movable in the first direction while being concentric with the socket portion 20. Further, a convex portion 50 b extending in the first direction is provided on the outer periphery of the first end side (large diameter side) of the magnet holder 50. The convex portion 50 b is fitted in the guide groove 25 of the frame 2. Thereby, the magnet holder 50 is provided so as to be movable in the first direction in a state where the rotation around the axis of the magnet holder 50 is restricted.

  On the outer periphery of the second end side (small diameter portion 2a) of the magnet holder 50, a screw groove is provided. That is, the second end side of the magnet holder 50 forms a male screw. The second end side of the magnet holder 50 is located in the large diameter portion 2 b of the frame 2.

  The rotating body 51 according to the present embodiment is formed in a cylindrical shape and has a first end and a second end. A thread groove is formed on the inner peripheral surface on the first end side of the rotating body 51 and is screwed to the second end side (male thread) of the magnet holder 50. The inner diameter on the second end side of the rotating body 51 is set to be larger than the inner diameter on the first end side. Thereby, the screwing range of the rotating body 51 and the magnet holding body 50 is narrowed, and the resistance of relative rotation between the rotating body 51 and the magnet holding body 50 is minimized.

  In the present embodiment, the gear mechanism 52 includes a sun gear 52a that is concentrically rotatable with the socket portion 20, an internal gear 52b that is concentric with the socket portion 20 and fixed to the frame 2, and a sun gear 52a and an internal gear 52b. And a planetary gear 52c meshing with each other.

  In the present embodiment, the sun gear 52 a is formed integrally with the rotating body 51. That is, external teeth are formed on the outer periphery of the rotating body 51, and the rotating body 51 functions as the sun gear 52a. The internal gear 52b is formed in an annular shape, and internal teeth are formed on the inner periphery. The outer periphery of the internal gear 52b is fixed to the inner periphery of the frame 2 (in this embodiment, the large diameter portion 2b (tubular portion 21) of the frame 2. In this embodiment, the internal gear 52b is a sun gear. 52a, the planetary gear 52c is interposed between the sun gear 52a and the internal gear 52b, and the planetary gear 52c is interposed between the sun gear 52a and the internal gear 52b. The plurality of planetary gears 52c are attached to a support body 54 connected to the closing portion 31 (second surface) of the connection portion 3. Here, the support body 54 will be described. It is the support | pillar part 54a connected with the connection part 3 (blocking part 31), Comprising: The support | pillar part 54a introduced in the flame | frame 2 and the support plate 54b connected with the support | pillar part 54a in the flame | frame 2 are provided.

  The column portion 54a is formed in a cylindrical shape and has a first end and a second end. And the 1st end of the support | pillar part 54a is connected with the 2nd surface of the obstruction | occlusion part 31 in the connection part 3. FIG. The second end side of the column portion 54 a is inserted through the second annular portion 23 of the frame 2. The column portion 54 a is disposed so as to be concentric with the socket portion 20.

  The support plate 54b is an annular plate. The support plate 54b is connected to the second end of the column portion 54a so that the inner hole and the inner hole of the column portion 54a are continuous. A plurality of planetary gears 52c are attached to the support plate 54b at intervals in the circumferential direction. Since the support body 54 forms an inner hole extending in the first direction, the second end side of the rotating body 51 is concentrically inserted into the column portion 54a as described above. Thereby, the rotating body 51 is rotatably supported by the support body 54.

  As described above, as the planetary gear mechanism is adopted for the gear mechanism 52, the torque limiter 53 causes the sun gear 52a, the internal gear 52b, and the like until the rotational torque of the common operation rod 6 reaches the required torque for the torque transmission unit 79a. When at least one of the planetary gears 52c is prevented from rotating and the rotational torque acting on the frame 2 exceeds the torque required for the torque transmitting portion 79a, at least one of the sun gear 52a, the internal gear 52b, and the planetary gear 52c. Configured to allow rotation. In the present embodiment, the torque limiter 53 prevents the rotation of the planetary gear 52c until the rotational torque of the common operation rod 6 reaches the required torque for the torque transmission portion 79a, and the rotational torque of the common operation rod 6 becomes the torque transmission portion 79a. When the required torque with respect to is exceeded, the planetary gear 52c is allowed to rotate.

  More specifically, the torque limiter 53 is provided for each planetary gear 52c. The torque limiter 53 is fixed to the support body 54 (support plate 54b). The planetary gear 52 c and a shaft (not numbered) serving as the rotation center of the planetary gear 52 c are integrally connected, and the shaft is connected to the torque limiter 53. As the torque limiter 53, various types can be adopted as long as the torque limiter 53 prevents the rotation to a predetermined torque and allows the rotation when the torque exceeds the predetermined torque. The torque limiter 53 of the present embodiment applies a resistance due to the urging force of an elastic body (for example, a plurality of disc springs) to the bearing body that supports the shaft, and the resistance due to the urging force wins until a predetermined torque is applied. Thus, the shaft is prevented from rotating, and when a predetermined torque is applied, the torque overcomes the resistance by the biasing force and the shaft rotates.

  The tool connection adapter 1 according to the present embodiment is as described above. Next, the operation of the tool connection adapter 1 will be described together with the method of using the tool connection adapter 1. Here, the case where the PD clamp 7 is used as the work tool 7 will be described as an example.

  The tool connecting adapter 1 is connected in advance to the tool connecting portion 65 of the common operation rod 6 as shown in FIG. At this time, the operator inserts the fitting portion 66 of the tool connection portion 65 concentrically into the connection portion 3 of the tool connection adapter 1 (the cylindrical portion 30 of the connection portion 3), while engaging the engagement pin of the tool connection portion 65. 67 is moved along the slit 32 provided in the connection part 3 (the cylindrical part 30 of the connection part 3) of the adapter 1 for tool connection. When the engaging pin 67 reaches the third slit portion 32c of the slit 32, the urging pin 68 urges the connecting portion 3 (the closing portion 31), and the engaging pin 67 is the tip portion of the third slit portion 32c. Placed in. As a result, the engagement pin 67 is engaged with the periphery of the slit 32 in the connection portion 3, and the tool connection adapter 1 moves in the axial direction relative to the common operation rod 6 and rotates around the axial center. Are connected in a restricted state.

  Next, the PD clamp 7 is attached to the tool connection adapter 1. At this time, the tool connection adapter 1 has the magnet 4 disposed in advance at a position where the tool connection adapter 1 is in the first state. In the present embodiment, the magnet holder 50 is disposed in advance at the first position. Then, the socket part 20 is fitted into the tool side connection part 70 of the PD clamp 7. In this embodiment, since the outer diameter of the socket part 20 corresponds to the inner diameter of the tool side connection part 70, when the socket part 20 is fitted into the tool side connection part 70 of the PD clamp 7, the outer periphery of the socket part 20 Is guided to the inner periphery of the tool side connecting portion 70. Thereby, the socket part 20 is fitted in the tool side connection part 70 concentrically with the rotating shaft 79 (torque transmission part 79a) arrange | positioned concentrically with the tool side connection part 70 and this tool side connection part 70. FIG. Accordingly, the socket part 20 is externally fitted to the torque transmission part 79a in the tool side connection part 70, and is in a state where torque can be transmitted.

  As described above, since the magnet holder 50 is disposed in the first position, the magnet 4 is positioned in the vicinity of the socket portion 20 (in the first state). The torque transmission part 79 a in the part 20 is magnetically attached, and the entire PD clamp 7 is firmly connected to the tool connection adapter 1. That is, the common operation rod 6 is connected to the PD clamp 7 in a state where it cannot be removed by the magnetic force of the magnet 4 mounted on the tool connection adapter 1. Therefore, while the operator operates the common operation rod 6 to which the PD clamp 7 is connected, the common operation rod 6 is not accidentally dropped from the PD clamp 7.

  Then, as described above, the operator operates the common operation rod 6 and the PD clamp 7 is moved to a position corresponding to the cable C constituting the power transmission system, and then the cable C enters the main body 74 from the cable introduction path 75. Is introduced. As a result, the cable C crosses the main body 74 of the PD clamp 7. In this state, the PD clamp 7 may be temporarily hooked on the cable C. However, even if the operator carelessly releases the common operation rod 6, the common operation rod 6 is not affected by the magnetic force of the magnet 4. To maintain the PD clamp 7 connected.

  Then, when the common operating rod 6 is rotated around the axis by the operator, the frame 2 passes through the gear mechanism 52 whose operation is blocked by the connecting portion 3, the support 54, and the torque limiter 53. Is transmitted to. Thereby, the rotational torque of the common operation rod 6 is transmitted to the torque transmission part 79a via the socket part 20 of the frame 2, and the rotation shaft 79 of the PD clamp 7 rotates. Accordingly, as shown in FIG. 5B, the PD clamp 7 exhibits a predetermined function. That is, the rotating shaft 79 screwed to the partition wall 76 moves in the axial direction along with the rotation, and moves the other holding body 78 toward one holding body 77. Accordingly, the cable C is sandwiched between the pair of sandwiching bodies 77 and 78, and finally the needle-like portion 77a of one sandwiching body 77 is pierced into the covering of the cable C and electrically connected to the internal core wire Ca. Is done.

  As the PD clamp 7 performs a function of electrically connecting the cable C in a sandwiched state (the needle-like portion 77a pierces the sheath), the rotational torque necessary to rotate the rotary shaft 79 increases. The operator rotates the common operation rod 6 accordingly. Therefore, the gradually increasing rotational torque is transmitted to the gear mechanism 52 through the connection portion 3 and the support body 54. However, since the torque limiter 53 prevents the operation of the gear mechanism 52 until the rotational torque of the common operation rod 6 reaches the required torque for the torque transmission portion 79a, the rotating body 5 and the frame 2 meshed with the gear mechanism 52 are integrated. Rotate to. Therefore, the rotating body 51 (sun gear 52a) does not rotate independently with respect to the magnet holder 50 until the PD clamp 7 exhibits a predetermined function, and the magnet holder 50 is moved to the first position. Maintain with. Thus, the needle-like portion 77a that is electrically connected to the bypass cable C is electrically connected to the core wire Ca of the cable C until the rotational torque of the common operation rod 6 reaches the required torque for the torque transmission portion 79a. Until the PD clamp 7 performs a predetermined function), the magnet 4 disposed in the vicinity of the socket portion 20 is magnetically attached to the torque transmission portion 79a in the socket portion 20, and the entire PD clamp 7 is attached to the tool connection adapter 1. On the other hand, keep it firmly connected. Therefore, while the operator operates the common operation rod 6, the common operation rod 6 is not inadvertently dropped from the PD clamp 7, and the operability is improved.

  In the tool connection adapter 1 according to the present embodiment, when the common operation rod 6 is continuously rotated in a state where the PD clamp 7 exhibits a predetermined function, as shown in FIG. The magnet 4 is brought into the second state by the portion 71. That is, when the operator continues to rotate the common operation rod 6 while the needle-shaped portion 77a reaches the cable C to the core wire Ca, the rotational torque further increases. When the rotational torque of the common operation rod 6 exceeds the required torque for the torque transmission part 79a, the torque limiter 53 allows the gear mechanism 52 to operate, so that the rotational torque of the common operation rod 6 rotates via the gear mechanism 52. The rotation body 51 is transmitted to the body 51, and rotates at a fixed position (around the magnet holder 50) independently of the frame 2.

  More specifically, the rotating shaft 79 (torque transmitting portion 79a) of the PD clamp 7 cannot rotate or substantially rotates when the PD clamp 7 exerts a function of electrically connecting the cable C while sandwiching the cable C. It becomes impossible. Therefore, when the rotational torque of the common operation rod 6 becomes equal to or greater than the necessary torque for the torque transmission portion 79a (the torque at which the PD clamp 7 exerts its function), the frame 2 engaged with the torque transmission portion 79a of the rotary shaft 79 and the frame 2 are integrated. Rotation of the internal gear 52b is prevented. In this state, the torque limiter 53 allows the planetary gear 52c to rotate because the support 54 coupled to the connection portion 3 is subjected to a rotational torque that is greater than the required torque for the torque transmission portion 79a. Along with this, the planetary gear 52c rotates the sun gear 52a while revolving around the sun gear 52a. Thereby, the magnet holding body 50 is screw-fed by the sun gear 52a (rotating body 50) and moves in the axial direction, and the magnet 4 moves away from the socket portion 20 (moves toward the second position). When the magnet holder 50 reaches the second position, the magnetic force of the magnet 4 does not affect the torque transmission part 79a, and the magnetism of the magnet 4 to the torque transmission part 79a is released. Accordingly, as shown in FIG. 6B, the common operation rod 6 is operated so that the socket part 20 inserted concentrically with the tool side connection part 70 of the PD clamp 7 is pulled out from the tool side connection part 70. The common operation rod 6 can be easily removed from the PD clamp 7 attached to the cable C simply by doing so. As described above, after the common operation rod 6 is removed from the PD clamp 7, the cutout is repaired or replaced.

  When a series of operations are completed, the tool connection adapter 1 connected to the common operation rod 6 is connected to the PD clamp 7 attached to the cable C of the power transmission system. At this time, the magnet holder 50 is disposed in the first position in advance, the magnet 4 is disposed in the vicinity of the socket portion 20, and the socket portion 20 is fitted into the tool side connection portion 70 of the PD clamp 7. As in the case of, the common operation rod 6 is connected to the PD clamp 7 via the tool connection adapter 1. Although not particularly mentioned, the magnet holder 50 can be moved in the axial direction by rotating the frame 2 forward or backward to change the position to the first position and the second position.

  Then, the common operating rod 6 is rotated in the direction opposite to that when the function of the PD clamp 7 is exerted, whereby the socket portion 20 transmits the rotational torque to the torque transmitting portion 79a, and the rotating shaft 79 is rotated in the reverse direction. At this time, since the pair of sandwiching bodies 77 and 78 sandwich the cable C while the needle-shaped portion 77a is electrically connected to the cable C, the PD clamp 7 Torque more than the required torque (torque for exhibiting the function of the PD clamp 7) for the torque transmitting portion 79a is required. Therefore, the torque limiter 53 allows the operation of the gear mechanism 52 (rotation of the planetary gear 52c), and accordingly, the rotating body 51 rotates in the opposite direction to the above case and the magnet holding body. An attempt is made to move 50 to the socket 20 side. However, since the magnet holder 50 is in the first position which is the movement limit position, the magnet holder 50 does not move in the axial direction and prevents the rotation shaft 79 from rotating. As a result, the magnet 4 is positioned in the vicinity of the socket portion 20 and is maintained in a state of being magnetically attached to the torque transmission portion 79a in the socket portion 20. Accordingly, even in this case, while the operator operates the common operation rod 6, the common operation rod 6 is not inadvertently dropped from the work tool 7, and the operability is improved.

  Then, with the reverse rotation of the rotating shaft 79, one clamping body 77 is separated from the other clamping body 78 (needle portion 77a), and the clamping to the cable C is released. Thereby, the operator operates the common operation rod 6 and the PD clamp 7 is removed from the cable C. Even in this state, the work tool 7 is detached from the common operation rod 6 when the PD clamp 7 is removed from the cable C in order to maintain the magnet 4 magnetically attached to the torque transmission portion 79a in the socket portion 20. I don't have to.

  As described above, in the tool connection adapter 1 according to this embodiment, even if the work tool 7 having the torque transmission part 79a is connected to the common operation rod 6, the rotation operation of the work tool 7 with respect to the torque transmission part 79a is performed. In addition, the common operation rod 6 can be easily removed from the work tool 7 (work tool 7 having a predetermined function) attached to the power transmission system. . Further, if the tool connection adapter 1 according to the present embodiment is used, the work can be performed with the lightweight single-shaft shared operation rod 6, and therefore the operability during the work can be further improved.

  Next, a tool connection adapter according to a second embodiment of the present invention will be described. Note that, in the following description, the same name and the same reference numeral are assigned to a configuration that is common to or equivalent to that of the first embodiment. And since the basic composition of a common operation stick and work tool used as the object of adapter 1 for tool connection concerning this embodiment is the same as that of the first embodiment, the explanation of the first embodiment may be substituted. To do. The tool connection adapter 1 according to the present embodiment is based on the premise that the magnet M is fixed to the torque transmission portion 79a of the work tool 7 (see FIGS. 10 and 11).

  And the tool connection adapter 1 which concerns on this embodiment is with respect to the torque transmission part 79a, as shown to Fig.7 (a), FIG.7 (b), and FIG.7 (c) similarly to 1st embodiment. A frame 2 having a cylindrical socket portion 20 formed to be externally fitted and configured to be able to transmit torque in a state of being externally fitted to the torque transmission portion 79a, and connected to the frame 2; Arrangement of the connection part 3 comprised so that the common operation rod 6 can be connected concentrically or substantially concentrically, the magnet 4 (refer Fig.7 (a)) which produces the magnetic force which can be magnetically attached to the torque transmission part 79a, and arrangement | positioning of the magnet 4 The magnet 4 is magnetically attached to the torque transmission part 79a to which the socket part 20 is externally fitted, and the magnet 4 is attached to the torque transmission part 79a to which the socket part 20 is externally fitted. Mechanism part 5 (switchable to a second state incapable of being magnetized And a 7 (a) refer).

  As in the first embodiment, the frame 2 according to this embodiment is formed into a stepped bar shape as shown in FIGS. 8, 9A and 9B, and has a first end and a second end. And have. That is, the frame 2 is a small-diameter portion 2a having a first end and a second end, and a large-diameter portion 2b having a first end and a second end, the first end being the first end of the small-diameter portion 2a. And a large diameter portion 2b connected to the. The small diameter portion 2a is formed with a through hole penetrating in the first direction. A substantially half region on the second end side of the small diameter portion 2a in the through hole is formed in a polygonal hole shape. A substantially half region on the first end side of the small diameter portion 2a in the through hole is formed in a round hole shape having a smaller diameter than the polygonal hole on the second end side. The outer diameter of the small diameter portion 2 a is set to be approximately the same as the inner diameter of the tool side connection portion 70 of the work tool 7. In the present embodiment, the length in the first direction of the small diameter portion 2 a is set to be equal to or longer than the length in the first direction of the tool side connection portion 70 of the work tool 7. Thereby, the substantially half area | region of the 2nd end side of the small diameter part 2a can be inserted concentrically with respect to the tool side connection part 70 of the working tool 7, and can transmit torque with respect to the torque transmission part 79a. The socket part 20 that can be externally fitted in a state is configured.

  The outer diameter of the large diameter part 2b is set larger than the outer diameter of the small diameter part 2a. The large-diameter portion 2b includes a cylindrical portion 21 having a first end and a second end, and a first annular portion 22 concentrically connected to the first end of the cylindrical portion 21. The inner hole of the first annular portion 22 is formed to have the same diameter as the round hole portion of the through hole of the small diameter portion 2a and is continuous with the through hole. And the long hole 26 extended in a 1st direction is formed in the large diameter part 2b.

  The connecting portion 3 has a first end and a second end, and has a cylindrical portion 30 set to have a larger diameter than the large-diameter portion 2b of the frame 2, and a closing for closing the first end of the cylindrical portion 30. Part 31. A slit 32 penetrating inward and outward is formed in the cylindrical portion 30 of the connecting portion 3. The slit 32 is formed on the outer peripheral surface of the cylindrical portion 30 so as to exhibit a T shape. That is, the slit 32 has a first slit portion 32a extending from the second end of the cylindrical portion 30 toward the first end, a first slit portion 32a extending in the circumferential direction of the cylindrical portion 30, and having a first end and a second end. Two slit portions 32b, the second slit portion 32b between the first end and the second end being continuous with the first slit portion 32a, and the first end and the second end of the second slit portion 32b, respectively. It has a pair of continuous third slit portions 32 c and a third slit portion 32 c extending from the first end side of the cylindrical portion 30 toward the second end side.

  The blocking part 31 has a first surface and a second surface opposite to the first surface, and the first surface faces the tubular portion 30 side. And the recessed part 33 in which the urging | biasing pin 68 is inserted is provided in the 1st surface concentric with the cylindrical part 30, or substantially concentric. And the large diameter part 2b of the flame | frame 2 is connected with the 2nd surface of the obstruction | occlusion part 31 so that the flame | frame 2 and the connection part 3 may become concentric.

  A permanent magnet is adopted as the magnet 4. The magnet 4 is arranged in the vicinity of the socket part 20 with its different magnetic poles (N pole and S pole) facing the socket part 20 side and the connection part 3 side. The magnetic force of the magnet 4 is set so that it can counter the load of the common operation rod 6 when it is magnetically attached to the rotating shaft 79 (torque transmission portion 79a) of the work tool 7. In the present embodiment, as described above, another magnet M is provided in the torque transmission unit 79a, so that the magnetic force of the magnet 4 is magnetically attached in cooperation with another magnet M of the torque transmission unit 79a. , It is set so as to be able to counter the load of the common operation rod 6.

  The mechanism unit 5 is configured to rotate the magnet 4 about an axis extending along a boundary between different magnetic poles. That is, the mechanism unit 5 is configured to rotate the magnet 4 by 180 ° in order to change the magnetic poles facing the socket unit 20 side.

  This will be specifically described. The mechanism portion 5 includes a holding portion 55a that holds the magnet 4 and a shaft portion 55b that is formed continuously with the holding portion 55a so as to extend along the boundary between the magnetic poles, and includes the frame 2 (the small diameter portion 2a of the frame 2). ), A magnet holder 55 having a shaft portion 55b rotatably supported, a first pulley 56a attached to the shaft portion 55b of the magnet holder 55, and a shaft parallel to the first pulley 56a. A second pulley 56b provided to be rotatable around, an endless belt 56c spanned between the first pulley 56a and the second pulley 56b, and the frame 2 so as to be movable in a predetermined direction. An operating lever 57 provided, and a link mechanism 58 that operatively connects the second pulley 56b and the operating lever 57 are provided.

  As described above, the first pulley 56a is attached to the shaft portion 55b. Therefore, it rotates together with the magnet 4 (magnet holder 55). The second pulley 56b is arranged to be in the same row as the first pulley 56a in the first direction. And the 2nd pulley 56b is rotatably provided with respect to the 1st axis | shaft 59a provided in the large diameter part 2b of the flame | frame 2 so that it may become parallel with the axial part 55b of the magnet holding body 55. FIG. . The endless belt 56c is provided so that the rotation of the second pulley 56b can be transmitted to the first pulley 56a (magnet holder 55). The endless belt 56c corresponds to the form of the first pulley 56a and the second pulley 56b. For example, when a toothed pulley is used for the first pulley 56a and the second pulley 56b, A toothed belt is employed as the endless belt 56c.

  The operation lever 57 is formed in a rod shape and is inserted through the long hole 26 of the frame 2 (frame 2). The operation lever 57 is movable along the long hole 26.

  The link mechanism 58 is configured to reciprocately rotate the second pulley 56b within a range of 180 ° by an operation on the operation lever 57. The link mechanism 58 according to the present embodiment is a first link 58a having a first end and a second end, the first link 58a having the first end connected to the second pulley 56b, A second link 58b having a first end and a second end, the first end having a second link 58b connected to the first link 58a, and a first end and a second end. It is the 3rd link 58c, Comprising: The 3rd link 58c by which the 1st end part was connected with the 2nd end part of the 2nd link 58b is provided.

  As described above, the first link 58a is connected to the second pulley 56b and rotates about the axis together with the second pulley 56b. The first link 58a is formed with an elongated hole (not numbered) extending from the second end portion toward the first end portion side. The second link 58b has an intermediate portion between the first end portion and the second end portion. And then. The intermediate portion of the second link 58b is rotatably provided with respect to the second shaft 59b provided in the large diameter portion 2b of the frame 2 so as to be parallel to the shaft portion 55b of the magnet holder 55. . A shaft body (not numbered) parallel to the second shaft 59b is protruded from the first end of the second link 58b and is inserted into the elongated hole of the first link 58a. The first end of the third link 58c is rotatably connected to the second end of the second link 58b via a pin (not numbered) having an axis parallel to the second shaft 59b. An operation lever 57 inserted through the long hole 26 of the frame 2 is connected to the second end of the third link 58c.

  Thereby, in the link mechanism 58 according to the present embodiment, the operation lever 57 is operated (moved) along the elongated hole 26, whereby the third link 58c moves together with the operation lever 57, and accordingly. The second link 58b rotates around the second shaft 59b. As the second link 58b rotates, the first link 58a rotates within a range of 180 ° around the first shaft 59a, and the second pulley 56b connected to the first link 58a rotates around the first shaft 59a. In the range of 180 ° (see FIGS. 9A and 9B).

  The tool connection adapter 1 according to the present embodiment is as described above. Next, the operation of the tool connection adapter 1 will be described together with the description of the method of using the tool connection adapter 1 having the above configuration. Note that the method of connecting the tool connection adapter 1 to the common operation rod 6 and the work using the PD clamp 7 as the work tool 7 are the same as in the first embodiment. The description of the embodiment will be substituted, and here, the method of using the tool connection adapter 1 and the operation of the tool connection adapter 1 will be described.

  When the PD clamp 7 is connected to the tool connection adapter 1 according to the present embodiment, the magnetic pole on the socket portion 20 side of the magnet 4 in the frame 2 is connected in advance to another magnet 4 of the torque transmission portion 79 a in the PD clamp 7. (The first state) is different from the magnetic pole (the magnetic pole facing the side where the socket 20 is inserted). Then, as shown in FIG. 10A, the socket part 20 is inserted into the tool side connection part 70 of the PD clamp 7. Also in this embodiment, since the outer diameter of the socket part 20 corresponds to the inner diameter of the tool side connection part 70, when the socket part 20 is fitted into the tool side connection part 70 of the PD clamp 7, The outer periphery is guided to the inner periphery of the tool side connection part 70. Thereby, the socket part 20 is fitted in the tool side connection part 70 concentrically with the rotating shaft 79 (torque transmission part 79a) arrange | positioned concentrically with the tool side connection part 70 and this tool side connection part 70. FIG. Accordingly, the socket part 20 is externally fitted to the torque transmission part 79a in the tool side connection part 70, and is in a state where torque can be transmitted.

  As described above, the magnet 4 is disposed in the vicinity of the socket portion 20, and the magnetic pole on the socket portion 20 side is different from the magnetic pole of another magnet M of the torque transmission portion 79a. And magnetize. That is, the two magnets 4 and M are repelled when the same poles are opposed to each other, but are attracted to each other and strongly magnetized when different magnetic poles are opposed to each other. Therefore, the magnet 4 is firmly attached to the torque transmission part 79 a in the socket part 20, and the entire PD clamp 7 is firmly connected to the tool connection adapter 1. Thereby, the common operation rod 6 is connected in a state in which it cannot be detached from the PD clamp 7. Therefore, while the operator operates the common operation rod 6 to which the PD clamp 7 is connected, the common operation rod 6 is not accidentally dropped from the PD clamp 7.

  Then, after the PD clamp 7 is moved and the cable C is introduced into the main body 74 from the cable introduction path 75, when the common operation rod 6 is rotated around the axis by the operator, the rotational torque is reduced. The torque is transmitted to the torque transmitting portion 79a through the frame 2 (socket portion 20) of the tool connection adapter 1, and the rotating shaft 79 of the PD clamp 7 rotates. Thereby, the PD clamp 7 exhibits a predetermined function as shown in FIG.

  When the common operation rod 6 is removed from the PD clamp 7, the magnetic pole on the socket part 20 side of the magnet 4 arranged in the vicinity of the socket part 20 is in the same state as the magnetic pole of another magnet M in the torque transmission part 79a (first Second state). Specifically, as shown in FIG. 11 (a), the operation lever 57 of the tool connection adapter 1 is operated by another common operation rod, an insulating jacket or the like. Then, the link mechanism 58 rotates the second pulley 56b following the operation (movement) of the operation lever 57, and the rotational force is transmitted to the first pulley 56a via the endless belt 56c. Thereby, the magnet 4 rotates 180 ° together with the magnet holder 55 (reverses).

  In this state, the magnetic poles on the socket part 20 side of the magnets 4 arranged in the vicinity of the socket part 20 are the same as the magnetic poles of the other magnets M of the torque transmission part 79a, so that these magnets 4 and M repel each other. Then, the tool connection adapter 1 is pushed away from the PD clamp 7 (torque transmission portion 79a), and the common operation rod 6 can be easily detached from the work tool 7 as shown in FIG.

  When a series of work is completed and the tool connection adapter 1 connected to the common operation rod 6 is connected to the PD clamp 7 attached to the cable C of the power transmission system, the operation lever 57 is operated in advance, and the frame 2 The magnetic pole on the socket part 20 side of the inner magnet 4 is different from the magnetic pole of another magnet M of the torque transmitting part 79a in the PD clamp 7 (the magnetic pole facing the side where the socket part 20 is inserted) (first state). The magnet 4 is inverted so that Then, by inserting the socket part 20 into the tool side connection part 70 of the PD clamp 7, the magnet 4 is strongly magnetically attached to another magnet M of the torque transmission part 79a, and in the same way as in the above case, The common operation rod 6 is connected to the PD clamp 7 through the adapter 1.

  Then, the common operating rod 6 is rotated in the direction opposite to that when the function of the PD clamp 7 is exerted, whereby the socket portion 20 transmits the rotational torque to the torque transmitting portion 79a, and the rotating shaft 79 is rotated in the reverse direction. Then, with the reverse rotation of the rotating shaft 79, one clamping body 77 is separated from the other clamping body 78 (needle portion 77a), and the clamping to the cable C is released. Then, the operator operates the common operation rod 6 to remove the PD clamp 7 from the cable C. Even in this state, the work tool 7 is shared when the PD clamp 7 is removed from the cable C in order to keep the magnet 4 magnetically attached to another magnet M of the torque transmitting portion 79a in the socket portion 20. There is no drop off from the operating rod 6.

  As described above, in the tool connection adapter 1 according to this embodiment, even if the work tool 7 having the torque transmission part 79a is connected to the common operation rod 6, the rotation of the work tool 7 relative to the torque transmission part 79a is performed. There is an excellent effect that the common operation rod 6 can be easily removed from the work tool 7 (work tool 7 having a predetermined function) mounted on the power transmission system. obtain. Moreover, even if the tool connection adapter 1 according to the present embodiment is used, work can be performed with the lightweight single-shaft shared operation rod 6, so that the operability during the work can be further improved.

  Note that the present invention is not limited to the above-described embodiments, and it is needless to say that appropriate modifications can be made without departing from the gist of the present invention.

  In each said embodiment, although the flame | frame 2 was provided with the small diameter part 2a and the large diameter part 2b, it is not limited to this. That is, if the frame 2 has the socket part 20, the form can be variously changed.

  In each said embodiment, although the outer diameter of the socket part 20 was made to respond | correspond to the internal diameter of the tool side connection part 70, it is not limited to this. The socket part 20 should just be able to be fitted in a state where torque can be transmitted to at least the torque transmission part 79a of the rotating shaft 79.

  In each said embodiment, although the PD clamp was demonstrated to the example as the working tool 7 used as the object of connection, the working tool 7 is not limited to this. The work tool 7 may be any tool provided with a rotating shaft 79 that exerts the function of the function unit 71. In other words, the work tool 7 connected to the common operation rod 6 using the tool connection adapter 1 is one that needs to be removed while the common operation rod 6 is attached to the power transmission system, or the common operation rod 6. What is necessary is just to remove it. For example, in addition to the PD clamp 7, an indirect grounding short circuit device, a line expander, a protective tube inserter, a wire holding device, a wire temporary fixing tool, or the like may be used.

  In the first embodiment, the position of the magnet 4 is changed to switch between the first state and the second state. In the second embodiment, the direction of the magnet 4 is changed to change the first state. Although it switched to the 1st state and the 2nd state, it is not limited to this. For example, the mechanism unit 5 may be configured to change the posture of the magnet 4. That is, the functional unit 71 changes the arrangement (position, orientation, and orientation) of the magnet 4 so that the magnetic force (adsorptive force) of the magnet 4 acts on the rotating shaft 79 (torque transmission unit 79a) (first state). One state) and a state in which the magnetic force (attraction force) of the magnet 4 is not applied to the rotating shaft 79 (torque transmission portion 79a) (second state) may be configured.

  In the first embodiment, the planetary gear mechanism is employed as the gear mechanism 52, but the present invention is not limited to this. The gear mechanism 52 may be configured by combining various gears. In the first embodiment, the gear mechanism (planetary gear mechanism) 52 that rotates the rotating body 51 and the frame 2 relatively in the opposite directions is employed. However, the present invention is not limited to this. For example, a gear mechanism that rotates the rotating body 51 and the frame 2 in the same direction may be employed. As described above, when various gear mechanisms 52 are employed, the same operation and effect as the above-described embodiment can be achieved by connecting the torque limiter 53 to any gear. In this case, the thread groove for screwing the magnet holding body 50 and the rotating body 51 is either a normal screw or a reverse screw so as to correspond to the rotation direction of the rotating body 51 (the moving direction of the magnet holding body 50). Needless to say, it is made up of.

  In the second embodiment, the link mechanism 58 includes the first link 58a, the second link 58b, and the third link 58c. However, the present invention is not limited to this. The link mechanism 58 can be variously changed as long as the magnet 4 can be reversed. In the second embodiment, the link mechanism 58 rotates (inverts) the magnet 4 together with the first pulley 56a via the endless belt 56c by rotating the second pulley 56b. It is not limited. For example, the link mechanism 58 may rotate the magnet holder 50 directly.

  Moreover, in said 2nd embodiment, although the link mechanism 58 grade | etc., Was provided as the mechanism part 5, it is not limited to this. For example, the magnet 4 may be reversed by passing the shaft portion 55b of the magnet holder 50 through the frame 2 and directly rotating the shaft portion 55b. That is, the shaft portion 55 b of the magnet holder 50 may be a part of the mechanism portion 5.

  DESCRIPTION OF SYMBOLS 1 ... Tool connection adapter, 2 ... Frame, 2a ... Small diameter part, 2b ... Large diameter part, 3 ... Connection part, 4 ... Magnet, 5 ... Mechanism part, 6 ... Shared operation rod, 7 ... Working tool (PD clamp) , 20 ... Socket part, 21 ... Cylinder part, 22 ... First annular part, 23 ... Second annular part, 24 ... Insertion hole, 25 ... Guide groove, 26 ... Elongated hole, 30 ... Cylindrical part, 31 ... blocking part, 32 ... slit, 32a ... first slit part, 32b ... second slit part, 32c ... third slit part, 33 ... concave, 50 ... magnet holder, 50a ... concave, 50b ... convex part, 51 ... Rotating body, 52 ... gear mechanism, 52a ... sun gear, 52b ... internal gear, 52c ... planetary gear, 53 ... torque limiter, 54 ... support, 54a ... column, 54b ... support plate, 55 ... magnet holder, 55a ... Holding part, 55b ... Shaft part, 56a ... Pulley, 56b ... Lee, 56c ... endless belt, 57 ... operation lever, 58 ... link mechanism, 58a ... first link, 58b ... second link, 58c ... third link, 59a ... first shaft, 59b ... second shaft, 60 ... insulation , 61 ... grip part, 62 ... operation rod connection part, 65 ... tool connection part, 66 ... insertion part, 67 ... engagement pin, 68 ... biasing pin, 70 ... tool side connection part, 71 ... function part, 72 DESCRIPTION OF SYMBOLS ... Drive part 73 ... Function accommodating part, 74 ... Main body, 75 ... Cable introduction path, 76 ... Partition part, 77, 78 ... Holding body, 77a ... Needle-like part, 77b ... Base, 79 ... Rotating shaft, 79a ... Torque Transmitting part, 80 ... connecting seat, C ... cable, Ca ... core wire, S ... screw hole

Claims (5)

  A work tool that is equipped with a rotary shaft having a torque transmission part at its end and that exerts a predetermined function in accordance with the rotary operation of the rotary shaft is connected to the tip of a single-shaft type common operation rod having electrical insulation. An adapter for connecting a tool for use with a cylindrical socket portion that is formed to be externally fitted to the torque transmitting portion and configured to be capable of transmitting torque in a state of being externally fitted to the torque transmitting portion. A frame, a connection portion connected to the frame and configured to be concentrically or substantially concentric with the socket portion so that the common operation rod can be connected, a magnet for generating a magnetic force that can be magnetically attached to the torque transmission portion, A first state in which the magnet can be magnetically attached to the torque transmission part to which the socket part is externally fitted, and the torque transmission part to which the socket part is externally fitted. The magnet cannot be magnetized Tool connection adapter, characterized in that it comprises a mechanism which can switch to a two state.   The frame is coupled to the connection portion so as to be rotatable around the axis of the socket portion, and the mechanism portion has an axial shape having a first end portion to which the magnet is attached and a second end portion on the opposite side. A magnet holder, wherein the first end portion is directed toward the socket portion side and the second end portion is directed toward the connection portion side so as to be concentric with or substantially concentric with the socket portion. And a magnet holder that is movable in the axial direction and is non-rotatable around the axis with respect to the frame, and a rotary body that is rotatably provided at a fixed position, the magnet holding A rotating body screwed to the outer periphery of the body, a gear mechanism capable of transmitting the rotational torque from the common operation rod to the frame and the rotating body, and the rotational torque until the rotational torque reaches a required torque for the torque transmitting portion. Creation of gear mechanism A torque limiter that allows operation of the gear mechanism when the rotational torque exceeds a required torque for the torque transmission unit, and the magnet holder is axially rotated by the rotation of the rotating body. Moved to a first position where the magnet is disposed in the vicinity of the socket portion and enters the first state, and a second position where the magnet is separated from the socket portion and enters the second state. The tool connection adapter according to claim 1, wherein the tool connection adapter is provided so that the position can be changed.   The gear mechanism includes a sun gear that is concentrically rotatable with the socket portion, an internal gear that is concentric with the socket portion and fixed to the frame, and a planetary gear that meshes with the sun gear and the internal gear. The sun gear is formed integrally with the rotating body, the planetary gear is attached to a support fixed to a connecting portion, and the torque limiter requires the rotational torque to be applied to the torque transmitting portion. Until the torque is reached, rotation of at least one of the sun gear, the internal gear, and the planetary gear is prevented, and when the rotational torque exceeds a required torque for the torque transmission unit, the sun gear, the internal gear 3. The tool connection adapter according to claim 2, wherein the adapter is configured to allow rotation of at least one of the planetary gears.   Another magnet is fixed to the torque transmission part, and the magnet is arranged in the vicinity of the socket part with its own different magnetic poles facing the socket part side and the connection part side. The tool connection adapter according to claim 1, wherein the adapter is configured to rotate a magnet around an axis extending along a boundary between the different magnetic poles.   The mechanism portion is a holding portion that holds the magnet, and a shaft portion that is continuously formed on the holding portion so as to extend along the boundary of the magnetic pole, and is a shaft that is rotatably supported by the frame. A magnet holder having a portion, a first pulley attached to the shaft portion, a second pulley rotatably provided about an axis parallel to the first pulley, and a first pulley And the second pulley, an endless belt that passes through the frame, an operation lever that is movably provided in a predetermined direction, and a link that operatively connects the second pulley and the operation lever The tool connection adapter according to claim 4, further comprising a mechanism, wherein the link mechanism is configured to rotate the second pulley within a range of 180 ° by an operation on the operation lever.

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