JP5414976B2 - Opening and closing tool and opening and closing adapter - Google Patents

Description

  The present invention relates to an opening / closing tool and an opening / closing adapter, and more particularly, to an opening / closing tool and an opening / closing adapter used when opening / closing a sensor unit of an ammeter positioned so as to surround a distribution line.

  Conventionally, when measuring the current flowing through a distribution line without conducting a connection, a clamp-type ammeter is often used. For example, as shown in FIG. The distribution line D is provided by a clamp part (sensor part) 110 that includes a fixed part 111 that is fixed and a turning part 112 that is pivotally supported about a turning shaft (turning fulcrum) 112a. A measurement region S through which is inserted is formed. The clamp-type ammeter 100 is biased in a direction in which the rotating portion 112 approaches the fixed portion 111 by an unillustrated urging means, and the rotating portion 112 is rotated in a direction away from the fixed portion 111. By doing so, the clamp part 110 can be opened and the distribution line D symmetric to the measurement can be inserted into the measurement region S, and the rotating part 112 approaches the fixed part 111 by the biasing force. By closing the measurement region S, a coil that circulates around the distribution line D can be formed by the clamp portion 110, and the current flowing through the distribution line D can be measured.

  In the clamp-type ammeter 100, an opening / closing part 112b protruding outward is formed on the opposite side of the rotation part 112 of the rotation part 112, and the distribution line D is inserted into the clamp part 100. Is designed so that the rotating part 112 can be rotated in the opening direction away from the fixed part 111 by pressing the opening / closing part 112b.

  Here, the clamp-type ammeter 100 may be attached to the distribution line D through which a high-voltage current flows to measure current. In such a case, when adopting an indirect hot wire method of working from a remote position without stopping the current, as shown in FIG. 8, a clamp-type current is placed in the case 220 provided at the tip of the insulating operation rod 200. By setting and holding the total 100, as shown in FIG. 9, it can be used by attaching it to a distribution line D at a high place and hanging it and recording the measured current value in a memory card. .

  At this time, when the clamp type ammeter 100 is attached to the distribution line D, the rotation portion 112 is urged toward the fixed portion 111 and the clamp portion 110 is closed. It is necessary to rotate the portion 112 in a direction away from the fixed portion 111 to open the clamp portion 110. For example, the adapter 300 having the hook 310 shown in FIG. In some cases, an operation of rotating the rotating portion 112 is performed.

  However, in this adapter 300, since the tip of the hook 310 is inserted into the clamp portion 110 and the rotation portion 112 is rotated outward, the rotation portion 112 is pulled upward to be insulated. There is a possibility that the expensive clamp-type ammeter 100 may be dropped from the case 220 at the tip of the operation rod 200.

  Therefore, by attaching the adapter 400 shown in FIG. 11 to the tip of the insulating operation rod 13, it is possible to perform an operation of rotating only the rotating part 112 of the clamp part 110 of the clamp type ammeter 100. (For example, refer to Patent Document 1). In addition to the hooking portion 410 that can be inserted into the clamp portion 110 and hooked on the rotating portion 112, the adapter 400 has a protruding piece 221 of the case 220 at the tip of another insulating operation rod 200 in which the clamp type ammeter 100 is set. A fulcrum part 420 parallel to the hooking part 410 is provided so that it can be hooked on and swung (rotated).

  In this adapter 400, as shown in FIG. 12, the fulcrum part 420 can be hooked on the protruding piece 221 of the case 220 at the tip of the insulation operation rod 200 to function as a rotation fulcrum. It is possible to substantially limit the movement only by rotating around the center. As a result, the adapter 400 can hook only the hooking part 410 inserted into the clamp part 110 on the inner surface of the rotating part 112 and rotate it outward. The clamp part 110 can be opened and attached to the distribution line D without being dropped from the case 220.

However, in this adapter 400, when there is no case 220 in which the protruding piece 221 is formed, the adapter 400 cannot be used effectively, and the insulating operation rod 13 is attached to the case 220 at the tip of another insulating operation rod 200. There was a problem that it was difficult to work because it was substantially suspended.
JP-A-2005-337961

  Therefore, the present invention can be handled regardless of the insulating operation rod holding the clamp-type ammeter, and by realizing an opening / closing tool that can easily open the clamp portion of the clamp-type ammeter, An object is to reduce the current measurement work by enabling easy setting to a remote position.

  A first invention of an opening / closing tool that solves the above-described problems is an opening / closing tool that opens and closes the sensor unit of an ammeter that measures the current characteristics flowing through the distribution line by positioning the sensor unit so as to surround the distribution line. The ammeter includes a fixed portion fixed to the ammeter body side and a rotating portion that is rotatable about a rotation fulcrum. The rotating portion is fixed to the ammeter. The measurement area through which the distribution line is inserted is closed so that the current characteristic can be measured by being rotated by the urging force of the urging means in the direction of approaching to the ampere, and the ammeter body side from the rotation fulcrum of the rotation part It is designed to open the measurement area so that the distribution line can be inserted into the inside by rotating the rotating part in a direction separating the fixed part from the opening and closing part that extends outward and protrudes outward. On the other hand, the rotation part of the sensor part of the ammeter An opening / closing tool body provided with a hooking part to be brought into contact with the inner surface on the measurement area side, and a pressing part for pressing the opening / closing part of the rotating part of the sensor part of the ammeter, and the opening / closing tool body connected to the distal end side in a remote manner And an operating rod for operating opening and closing of the sensor unit of the position ammeter.

  In this invention, the hooking portion of the opening / closing tool body at the tip of another operating rod is placed on the inner surface side of the rotating portion of the sensor unit of the ammeter set at the tip of the operating rod and moved to the vicinity of the remote distribution line. In the state where the pressing portion of the opening / closing tool body is positioned at a position where the opening / closing portion of the sensor unit is pressed, the operating portion of the sensor unit of the ammeter At the same time that the opening / closing part is pressed by the pressing part, the hooking part hooked on the inner surface of the rotating part of the sensor part can be rotated in a direction away from the fixing part of the sensor part. It can be rotated against the urging force by the urging means in a direction away from the fixed portion. Therefore, the rotation part of the sensor part of the ammeter can be easily rotated in the direction away from the fixed part, and the sensor part can be easily opened so that the distribution line can be inserted into the internal measurement region. it can.

  In addition to the specific matters of the first invention, the second invention of the opening / closing tool that solves the above-described problem is that the extending direction of the opening / closing tool body intersects between the proximal end portion and the distal end portion of the operating rod. It is characterized by interposing a connecting member for connecting the angle to be adjustable.

  In this invention, it is possible to adjust the extending direction (crossing direction) of the opening / closing tool main body having the hook part and the pressing part with respect to the operation rod, and to the ammeter (the rotating part of the sensor part) held at a remote position. You can easily work by adjusting the approach direction. Therefore, the hooking part can be easily hooked on the turning part of the sensor part of the ammeter and turned away from the fixed part, and the clamp part can be easily opened so that the distribution line can be inserted into the internal measurement area. Can be in a state.

  In addition to the specific matter of the first or second invention, the third invention of the opening / closing tool that solves the above-mentioned problems extends from the hooking portion of the opening / closing tool body to the location connected to the tip of the operating rod through the pressing portion. It is characterized by being made of one continuous bar material.

  In this invention, the opening / closing tool main body provided with a hook part and a press part can be produced with one bar material. Therefore, it does not take time and labor like cutting or assembling work, and for example, it is possible to produce an opening / closing tool body at low cost by bending a single bar material to form a hooking part or a pressing part. A tool that can easily open and close the sensor unit of the ammeter can be prepared at low cost.

  In addition to the specific matters of the third invention, a fourth invention of an opening / closing tool that solves the above-described problems is characterized in that a material that can be bent manually is selected as the bar material.

  In this invention, the opening / closing tool main body of one bar material provided with the hook part and the pressing part can be easily bent manually without using a special tool. Therefore, it is possible to easily finely adjust the posture of the hooking part and the pressing part with respect to the operation rod, and it is impossible to finely adjust the approach angle according to the ammeter (the rotating part of the sensor part) held at the remote position. It is possible to work easily with no posture.

  According to a fifth invention of the opening / closing tool for solving the above-mentioned problems, in addition to the specific matters of any of the first to fourth inventions, the hooking portion and the pressing portion are arranged on an extension line from the operating rod. It is a feature.

  In this invention, it can operate by making the hook part and press part on the extension line of an operating rod contact the rotation part etc. of the sensor part of an ammeter. Therefore, when the hook part or the pressing part comes into contact with the rotation part of the sensor part of the ammeter (so-called action point) is removed from the extension line of the operation rod, the opening / closing tool body is rotated. The operation rod can be stably operated and operated.

  A sixth invention of an opening / closing tool that solves the above-described problem is that, in addition to the specific matters of any of the first to fifth inventions, at least the surface of the hooking portion and the pressing portion is provided with anti-slip means. It is a feature.

  In this invention, it can operate by making a hook part and a press part press-contact, without slipping to the rotation part side of the clamp part of an ammeter. Therefore, it is possible to stably operate and operate the operating rod without hindering the operation of rotating the rotating portion of the clamp portion of the ammeter due to slipping of the hook portion or the pressing portion.

  According to a first aspect of the opening / closing adapter for solving the above-described problems, a structure that can be attached to and detached from a general-purpose operation rod is provided at the base end of the opening / closing tool body in the opening / closing tool according to any one of the first to sixth inventions. It is characterized by that.

  In this invention, it can be used as an opening / closing tool simply by being attached to the tip of a general-purpose operating rod. Therefore, other adapters and general-purpose operation bars can be used in common and can be prepared without burden.

  According to the present invention, the rotation part can be hooked and rotated while pressing the opening / closing part prepared in the ammeter body, so that the operation is such that the ammeter body is lifted by useless movement. Therefore, it is possible to easily and reliably perform the rotation of the rotation unit without any trouble. Therefore, for example, even in an indirect hot wire method using an insulating operation rod, the ammeter can be easily set on a distribution line at a remote position and the current measurement work can be reduced.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described based on the drawings. 1-5 is a figure which shows one Embodiment of the opening / closing tool which attached the opening / closing adapter based on this invention to the front-end | tip of an operating rod. Here, in the present embodiment, for example, as illustrated in FIGS. 7 to 9, a clamp-type current set in the case 220 at the tip of the insulating operation rod 200 and moved to the vicinity of the remote distribution line D, for example. Since the clamp-type ammeter 100 is attached to the distribution line D by opening and closing the clamp part 110 of the total 100, the clamp-type ammeter 100 can be suitably used. The same components will be described with the same reference numerals.

  In FIG. 1, an opening / closing tool 10 attaches and supports a dedicated opening / closing adapter (opening / closing tool body) 11 used when opening / closing the clamp part 110 of the clamp-type ammeter 100 and various adapters including the opening / closing adapter 11 to the distal end side. In addition, a general-purpose Kiza seat adapter (connecting member) 12 whose mounting angle (intersection angle in the extending direction) can be adjusted, and various adapters including this Kiza seat adapter 12 are mounted and supported on the distal end side to be remotely located Are manufactured by assembling a general-purpose insulating operation rod 13 that realizes various operations in the above, and the insulating operation rod is adjusted to an angle suitable for opening and closing the clamp portion 110 of the clamp-type ammeter 100. The open / close adapter 11 is attached to the tip of the No. 13 head adapter 12 for use. That is, the opening / closing tool 10 can be used simply by attaching the opening / closing adapter 11 by using the general-purpose scorpio adapter 12 to which other various adapters can be attached and the insulating operation rod 13 in common.

  As shown in FIG. 2, the open / close adapter 11 is formed so as to have an operation portion 21 that is formed in a substantially U shape, and extends continuously from the operation portion 21. The bar material is bent so as to include a support portion 22 that is supported at a position and a mounting portion 23 that is formed on the base end side (opposite side of the operation portion 21) of the support portion 22 and is attached to the star adapter 12. It is made into the united structure made. That is, the opening / closing adapter 11 can be easily and inexpensively operated, for example, by bending a single bar material without troublesome work such as cutting or assembling work. Have been made.

  The operation part 21 of the open / close adapter 11 is brought into contact with the inner surface of the rotation part 112 that is in a substantially vertical posture with respect to the main body side by being inserted into the measurement region S of the clamp part 110 of the clamp-type ammeter 100 from the front end side and hooked. The hook portion 21a to be contacted, the continuous portion 21b bent continuously at a substantially right angle from the rear end side of the hook portion 21a, and substantially perpendicular to the hook portion 21a continuously from the continuous portion 21b. And a pressing portion 21c formed so as to be able to press the main body side of the clamp-type ammeter 100 by bending, and the operation portion 21 is formed of the clamp portion 110 of the clamp-type ammeter 100. When the hooking portion 21a is brought into contact with the substantially vertical inner surface of the rotating portion 112, the continuous portion 21 so that the pressing portion 21c comes into contact with the opening / closing portion 112b of the rotating portion 112 so as to be pressable. It is set dimensions of. Further, the operation portion 21 of the opening / closing adapter 11 is covered on the outer surface by, for example, dipping a non-slip material such as a rubber material so that the hooking portion 21a and the pressing portion 21c to be abutted do not slip. The opening / closing adapter 11 is covered with the anti-slip material including the support portion 22.

  Further, the support portion 22 of the opening / closing adapter 11 is formed so as to be continuously bent from the pressing portion 21c of the operation portion 21 toward the pressing portion 21c side and then further bent in the separation direction so as to be parallel to the continuous portion 21b. The support portion 22 is formed so that the extending direction passes through the approximate center (w1≈w2) of the hook portion 21a and the pressing portion 21c of the operation portion 21. The attachment portion 23 of the opening / closing adapter 11 is bent so as to form an arc shape continuously from the support portion 22. As a result, in the opening / closing adapter 11, the hook 21 a of the operation unit 21 is hooked on the inner surface of the rotation unit 112 of the clamp unit 110 of the clamp-type ammeter 100 and the pressing unit of the operation unit 21 is described later. When 21 c presses the opening / closing part 112 b of the rotating part 112, the respective action points may substantially coincide with the extending direction of the support part 22 from the tip of the insulating operation rod 13 to generate a rotational force. Therefore, the attachment portion 23 is not easily detached from the Kikuza adapter 12.

  As shown in FIG. 3, the Kikuza adapter 12 includes a head portion 31 that connects and connects the mounting portion 23 of the opening / closing adapter 11, and a joint portion 35 that connects and connects to the tip of the insulating operation rod 13 at both ends of the rod shape. Has been placed.

  Here, the Kikuza adapter 12 is a general-purpose adapter that can connect and connect the head portion 31 to the head portion of the mating member formed in a similar shape by meshing and engaging the projection 31a that is continuous in the circumferential direction. The head portion 31 is designed so that the head portion of the mating member can be connected and connected at a desired mounting angle by screwing a thumbscrew 33 into a bolt 32 standing at the center thereof. Yes. For this reason, the open / close adapter 11 inserts the bolt 32 of the head portion 31 of the seat adapter 12 into the arc shape of the attachment portion 23 and screwes the thumbscrew 33 so as to press the attachment portion 23 against the protrusion 31a. And can be connected and connected so as to have a desired mounting angle.

  Further, the joint portion 35 of the Kikuza adapter 12 is formed in a bottomed cylindrical shape in which the rear end surface of the base end portion is opened so that the distal end portion of the insulating operation rod 13 can be inserted, and the cylindrical portions are mutually connected. The peripheral surface on the opposite side is cut into a substantially T-shape, so that the insertion notch portion 36 from the rear end surface (insulating operation rod 13) side toward the front end side, and both sides of the insertion notch portion 36 in the orthogonal direction. A pair of engagement notches 37 that are bent so as to be continuous with each other is formed.

  On the other hand, as shown in FIG. 4, the insulating operation rod 13 is provided in a projecting shape on the side surfaces opposite to each other at the tip portion, so that two joint portions 35 of the star adapter 12 are provided. A pin 41 that can be inserted into and engaged with the notches 36 and 37, a protrusion 42 that is disposed on the tip surface of the tip portion and is urged in a protruding direction by a built-in spring (not shown), and a tip portion A grip 43 that is screwed into a screw shape (not shown) engraved on the side surface of the base plate and can be advanced and retracted, and a gripping portion on the base end side that is gripped by an operator with non-slipable non-slipable material 44.

  Thereby, the insulating operating rod 13 inserts the tip portion into the joint portion 35 of the Kikuza adapter 12 and sinks the protrusion 42 against the elastic force of the built-in spring, while allowing both the pins 41 of the joint portion 35 to sink. After entering and rotating into the notches 36 and 37 and releasing the force to enter, the protrusion 42 protrudes due to the elastic force of the spring to push out the joint portion 35, and bends from the engagement notch 37. The pin 41 can be engaged with the engaging groove 37a. Further, the insulating operating rod 13 can be locked so that the pin 41 is not detached from the engaging groove 37a and rotated by rotating the grip 43 toward the joint portion 35 side. It is possible to prevent the opening / closing adapter 11) from being relatively rotated and detached and to make it easy to handle. Here, the insulating operating rod 13 has umbrella covers 45 and 46 attached to the middle portion, and is made of an insulating material such as plastic as a whole to ensure insulation. The cover 45 drips moisture from the opening / closing adapter 11 side, and the umbrella cover 46 on the base end side indicates a limit position where the work can be safely performed, thereby ensuring safety when working.

  Therefore, as shown in FIG. 5, the opening / closing tool 10 is described with reference to FIGS. 7 to 9 by attaching the open-close adapter 11 to the tip of the insulating operation rod 13 and attaching the open-close adapter 11 to the fixed adapter 12. Together with the clamp-type ammeter 100 set in the case 220 at the tip of the insulating operation rod 200 to be operated, the open / close adapter 11 can be brought close to the distribution line D without the need for a power failure. When the hook portion 21a is inserted into the measurement region S of the clamp portion 110 of the clamp-type ammeter 100 and positioned so as to contact the substantially vertical inner surface of the rotating portion 112, the pressing portion 21c of the operation portion 21 is The rotating portion 112 can be brought into contact with the opening / closing portion 112b.

  At this time, the opening / closing adapter 11 causes the pressing portion 21c of the operation portion 21 to be in the rotating portion while bringing the hook portion 21a of the operating portion 21 into contact with the inner surface of the rotating portion 112 of the clamp portion 110 of the clamp type ammeter 100. When it is difficult to bring the state into contact with the opening / closing portion 112b of the 112 due to the positional relationship of the worker, the mounting angle to the Kikuza adapter 12 can be adjusted, and the optimum working posture is easy. Can work on.

  The opening / closing tool 10 has an insulating operation rod in which the opening / closing adapter 11 is attached to the tip of the insulating operation rod 200 with the clamp-type ammeter 100 held and set in the case 220 on the distal end side via the Kikuza adapter 12. By moving the 13 hand (gripping part 44) in the approaching direction, the operation part 21 (the hooking part 21a and the pressing part 21c) of the open / close adapter 11 does not slip, and the support part 22 is the center. Without rotating, simultaneously holding the opening / closing portion 112b of the rotating portion 112 of the clamp portion 110 of the clamp-type ammeter 100, the inner surface of the rotating portion 112 can be hooked and rotated by the hook portion 21a. The rotating portion 112 is easily rotated in a direction to move away from the fixing portion 111 against the urging force in the closing direction that causes the rotating portion 112 to approach the fixing portion 111. It can be a part 110 in the open state.

  As a result, the opening / closing tool 10 can stably operate the insulating operation rod 13 to easily open the clamp part 110 of the clamp-type ammeter 100, and the distribution line D that is symmetric to the measurement is connected to the clamp part 110. After that, just by removing the operation part 21 of the opening / closing adapter 11 from the rotation part 112 of the clamp part 110, the rotation part 112 is urged by the urging force. By approaching the fixed part 111 and closing the clamp part 110, the clamp-type ammeter 100 is attached to the distribution line D and hung, and the coil that circulates around the distribution line D is clamped. The current formed and flowing at 110 can be measured. After the current measurement of the distribution line D is completed, the clamp-type ammeter 100 is simply pulled downward while the clamp-type ammeter 100 is set and held in the case 220 at the tip of the insulation operating rod 200. Thus, for example, by inserting the hooking portion 21a of the operating portion 21 of the opening / closing adapter 11 at the tip of the insulating operating rod 13 into the clamp portion 110 and pulling it downward, the rotating portion 112 of the clamp portion 110 can resist the urging force. And can be removed from the distribution line D by rotating.

  As described above, in this embodiment, by attaching the opening / closing adapter 11 to the tip of the insulating operation rod 13, the opening / closing portion 112 b prepared in the rotating portion 112 of the clamp portion 110 of the clamp type ammeter 100 is replaced with the operation portion 21. Of the opening / closing adapter 11 that can be rotated by hooking the rotating portion 112 of the clamp portion 110 with the hook portion 21a while being pressed by the pressing portion 21c. The approach angle can be adjusted by the stigmata adapter 12. Accordingly, the clamp-type ammeter 100 is dropped from the case 220 at the tip of the insulating operation rod 200 by making a useless movement such as the opening / closing adapter 11 rising upward and pulling up the rotating part 112 of the clamp part 110. The rotation part 112 of the clamp part 110 can be easily and stably rotated. Therefore, the clamp-type ammeter 100 can be easily attached to and detached from the distribution line D by the indirect hot wire method using the opening / closing tool 10.

  Here, as another form of the present embodiment, as shown in FIG. 6, the operation part 21, the support part 22, and the attachment part 23 of the opening / closing adapter 11 may be made of a rod material having a strength that can be bent manually. good. In this case, for example, when it is not necessary to adjust the mounting angle by the Kiza seat adapter 12, the extension angle α of the support portion 22 from the insulating operation rod 13 is appropriately bent to approach the operation angle of the operation portion 21. Can be fine-tuned.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

It is a figure which shows one Embodiment of the opening / closing tool which attached the opening / closing adapter which concerns on this invention to the front-end | tip, and is an elevation view which shows the schematic whole structure. It is a figure which shows the opening-and-closing adapter of the principal part components, (a) is the top view, (b) is the side view. It is a top view which shows the Kikuza adapter of the principal part components. It is a top view which shows the insulation operating rod of the principal part components. It is a perspective view explaining the use. It is a figure which shows another aspect, and is a side view corresponding to FIG.2 (b) which shows the opening / closing adapter of the principal part. It is a top view which shows the clamp type ammeter operated using the opening / closing tool. It is a perspective view which shows the case of the front-end | tip of the insulation operating rod which sets the clamp type ammeter. It is a perspective view explaining use of the clamp type ammeter. It is a top view which shows the hook of the prior art which can be used commonly used when attaching the clamp type ammeter to a distribution line. It is a top view which shows the opening-and-closing adapter of a prior art for exclusive use used when attaching the clamp type ammeter to a distribution line. It is a perspective view explaining use of the prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Opening / closing tool 11 ... Opening / closing adapter 12 ... Kikuza adapter 13, 200 ... Insulating operation rod 21 ... Operation part 21a ... Hook part 21c ... Pressing part 22 ... Support part 23 ... Mounting part 31 …… Head 32 …… Bolt 33 …… Thumb screw 35 …… Joint 36 …… Insertion notch 37 …… Engagement notch 41 …… Pin 42 …… Projection 43 …… Grip 44 …… Grip 45 46 ... Umbrella cover 100 ... Clamp-type ammeter 110 ... Clamp part 111 ... Fixed part 112 ... Turning part 112b ... Opening / closing part 220 ... Case D ... Distribution line

Claims (2)

An opening / closing tool for opening and closing the sensor unit of an ammeter that measures the current characteristics flowing through the distribution line by positioning the sensor unit so as to surround the distribution line,
A direction in which the sensor portion of the ammeter includes a fixed portion fixed to the ammeter main body side and a rotating portion provided so as to be rotatable around a rotation fulcrum, and the rotating portion approaches the fixed portion. The measurement area through which the distribution line is inserted is closed so that the current characteristic can be measured by being rotated by the urging force of the urging means, and the ampere main body side extends from the rotation fulcrum of the rotation part. Even though it is designed to open the measurement area so that the distribution line can be inserted into the inside by turning the turning part in a direction that separates it from the fixed part by pressing the opening and closing part protruding outward for,
Opening / closing tool main body comprising a hooking portion to be brought into contact with the inner surface on the measurement region side of the rotating portion of the sensor portion of the ammeter, and a pressing portion for pressing the opening / closing portion of the rotating portion of the sensor portion of the ammeter, and the opening / closing tool The main body is connected to the distal end side and operates between the operation bar for opening and closing the sensor part of the ammeter at the remote position, and the base part of the opening / closing tool main body and the distal end part of the operation bar are mutually extended. And a connecting member that adjustably connects the intersecting angles of directions,
The opening / closing tool body supports the hook part and the pressing part so that the base end part is connected to the connecting member and extends in a direction extending away from the base end part. The pressing portion is moved from the hooking portion so that the pressing portion is in a position where the pressing portion presses the opening / closing portion of the ammeter while the hooking portion is in contact with the inner surface of the rotating portion of the ammeter during the rotation operation. And a portion connected to the tip of the operating rod is made of a single rod material having a strength that can be bent manually, and at least the surface of the hooking portion and the pressing portion is provided with anti-slip means. Opening and closing tool.
An opening / closing adapter comprising an opening / closing tool body in the opening / closing tool according to claim 1 ,
An opening / closing adapter characterized in that a structure that can be attached to and detached from a general-purpose operation rod is provided at the base end of the opening / closing tool body .

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