JP2008122294A - Tool for removing plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for removing plug for easily pulling out a plug connected with a watt-hour meter installed on a consumer side and inserted into an uninterruptible terminal for stopping electric supply and releasing the stop. <P>SOLUTION: The plug removing tool 1 is used for removing a bypass plug 850 inserted into the uninterruptible terminal 800. The plug removing tool 1 comprises a base member 10, having a terminal contact section 16 capable of contacting the uninterruptible terminal 800 and a base member holding section 14 for maintaining the state, where the terminal contact section 16 is in contact with the uninterruptible terminal 800; a movable member 30 having a roll pin 35 for removably holding the bypass plug 850; a sliding mechanism for slidably assembling the movable member 30 to the base member 10 in the pulling out direction, where the bypass plug 850 separates from the uninterruptible terminal 800, and operating levers 41 and 43 that are formed on the movable member 30 and slide the movable member 30 in the pull-out direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a plug removal tool for removing a plug that is connected to a watt-hour meter installed on the customer side and that is inserted into an uninterruptible terminal for stopping and releasing the power supply.

  As shown in FIG. 10, power generated by a power supply source 600 such as a power supplier's generator is guided to a power transmission line, a distribution line, a service line 610, and power supply side power lines 612, 613, and 614, Further, the electric power is guided to load-side power lines 712, 713, and 714 via the total 710, and is supplied to an electric power consumer device (load device or terminal) 720 of an electric power consumer such as a house 700 or a factory. That is, the watt-hour meter 710 is connected between the power supply side power lines 612 to 614 and the load side power lines 712 to 714. The amount of power supplied to the power consumer is measured by a power meter 710.

  By the way, the power supplier charges the power consumer a power usage fee based on the power consumption measured by the power meter 710 and collects the power usage fee from the power consumer. At this time, the power supplier may stop supplying power to the power consumer if the power usage fee cannot be collected from the power consumer due to economic circumstances of the power consumer.

  Therefore, an electric power supplier, for an electric power consumer who needs to stop supplying electric power in the near future, has an electric energy meter installed in the electric power supplier's worker. Going to 700, the uninterruptible terminal 800 (for example, refer nonpatent literature 1) is electrically installed between the watt-hour meter 710 and the power consumption apparatus 720, as shown in FIG.

  As shown in FIG. 11, the uninterruptible terminal 800 includes a case 811 made of a synthetic resin, a cover 812 made of a synthetic resin that closes the opening of the case 811, and two conductive members that are insulated and arranged in the case 811. Blocks 813a and 814a and a lead wire 712a screwed to one conductive block 813a by a screw 815a are provided. Further, in the case 811, two conductive blocks 813 b and 814 b that are insulated and arranged separately from the conductive blocks 813 a and 814 a and also insulated from each other are screwed by one conductive block 813 b. A lead wire 714a which is stopped. The conductive blocks 813a, 814a, 813b, and 814b are made of brass.

  In the conductive blocks 813a and 814a, plug terminal insertion holes 822a and 823a into which one and the other terminals 851 and 852 of the bypass plug 850 can be inserted are provided in parallel, respectively. Cases 811 corresponding to the plug terminal insertion holes 822a and 823a communicate with the plug terminal insertion holes 822a and 823a, respectively, and plug fitting holes 824a into which the terminals 851 and 852 of the bypass plug 850 can be inserted. 825a is provided.

  Similarly, plug terminal insertion holes 822b and 823b into which one and the other terminals 851 and 852 of the bypass plug 850 can be inserted are provided in parallel in the conductive blocks 813b and 814b, respectively. Cases 811 corresponding to the plug terminal insertion holes 822b and 823b communicate with the plug terminal insertion holes 822b and 823b, respectively, and plug fitting holes 824b into which the terminals 851 and 852 of the bypass plug 850 can be inserted. 825b is provided.

  As shown in FIG. 12, the bypass plug 850 includes a conductive wire bent in a substantially U shape and an insulating main body portion 855 in which portions other than the terminals 851 and 852 of the conductive wire are molded with a synthetic resin. The insulating main body 855 has a substantially rectangular shape. The terminals 851 and 852 extend from one side surface of the insulating main body 855 so that they are substantially parallel. The insulating main body 855 has a head 856 that is thicker than the insulating main body 855 on the side opposite to the side surface on which the terminals 851 and 852 extend. The head 856 acts as a slip stopper described later. A pair of recesses 857 is formed in the vicinity of the head 856 side of the insulating main body 855.

  Therefore, the bypass plug 850 connects the conductive blocks 813a and 814a or the conductive blocks 813b and 814b to each other when the terminals 851 and 852 are inserted into the plug terminal insertion holes 822a and 823a or the plug terminal insertion holes 822b and 823b with difficulty. Acts as an electrical connection.

  As shown in FIG. 11, lead wires 826a and 826b have lead wire insertion holes 826a and 826b, respectively, so that the lead wire insertion holes 826a and 826b can insert the ends of the load side power lines 712 and 714, respectively. Is provided. The load-side power lines 712 and 714 having their ends inserted into the lead-in insertion holes 826a and 826b are held by set screws 827 screwed into the conductive blocks 814a and 814b, respectively.

  As shown in FIG. 10, the uninterruptible terminal 800 is provided with a partition wall 870 integrally with the case 811 so that the pair of bypass plugs 850 inserted through the plug terminal insertion holes 822b and 823b do not contact each other.

  Accordingly, as shown in FIG. 11, the operator connects both terminals 851 and 852 of the bypass plug 850 via plug fitting holes 824a and 825a, respectively, to plug terminal insertion holes 822a and 823a of the conductive blocks 813a and 814a. When inserted into the two terminals, both terminals 851 and 852 are electrically connected to the plug terminal insertion holes 822a and 823a, respectively, and are inserted with difficulty in removal. The lead wire 712a and the load-side power line 712 are electrically connected through a set screw 815a, a conductive block 813a, a terminal 851, a terminal 852, a conductive block 841a, and a set screw 827.

  Similarly, when the operator inserts both terminals 851 and 852 of the bypass plug 850 into the plug terminal insertion holes 822b and 823b of the conductive blocks 813b and 814b via the plug fitting holes 824b and 825b, respectively, 851 and 852 are electrically connected to the plug terminal insertion holes 822b and 823b, respectively, and are inserted with difficulty in removal. The lead wire 714a and the load-side power line 714 are electrically connected via a set screw 815b, a conductive block 813b, a terminal 851, a terminal 852, a conductive block 841b, and a set screw 827.

  Then, as shown in FIG. 13, when the supplier determines that the payment of the power usage fee is not sufficient, the worker of the supplier sends the amount of power of the consumer to the consumer who stops the supply of power. Go to the house 700 where the meter is installed, and remove the bypass plug 850 inserted in the uninterruptible terminal 800. Since the watt-hour meter 710 and the uninterruptible terminal 800 are installed at a relatively high position in the house 700 (for example, in the range of 1800 mm to 2000 mm from the floor), the worker can use the ladder or stepladder without any The work of removing the bypass plug 850 inserted in the power failure terminal 800 is performed.

  At this time, for example, the operator firmly holds the insulating main body 855 of the bypass plug 850 with the thumb H1 and the index finger H2 of the right hand H, and firmly holds the uninterruptible terminal 800 with the left hand h. Then, the worker puts the power of both arms of the worker in order to move the right hand H and the left hand h in opposite directions while firmly holding the insulating main body 855 and the uninterruptible terminal 800. At this time, since the head 856 is larger than the insulating main body 855, the head 856 acts as a slip stopper. As a result, the terminals 851 and 852 are gradually pulled out from the plug terminal insertion holes 822a and 823a, respectively, and finally come out completely from the plug terminal insertion holes 822a and 823a.

As a result, the lead wire 712a or 714a and the load-side power line 712 or 714 for the removed bypass plug 850 are electrically disconnected, so that the consumer cannot use the power consuming device 720.
Utility Model Registration No. 3127715 (FIG. 2) Manufactured by Tomita Electric Manufacturing Co., Ltd., model BC-40, http: // www. tomita-denki. co. jp / products / 10bc. html

  However, the uninterruptible terminal 800 and the bypass plug 850 are kept floating in a space near the watt hour meter 710 and higher than the height of the operator by lead wires 712a and 714a attached to the watt hour meter 710. Has been. Furthermore, one of the terminals 851 and 852 is inserted into the plug terminal insertion holes 822a and 823a in a manner that is difficult to remove. Similarly, the other terminals 851 and 852 are plug terminal insertion holes 822b and 823b, respectively. Therefore, it is not easy for an operator to remove the bypass plug 850 inserted into the uninterruptible terminal 800.

  Therefore, the worker is forced to remove the bypass plug 850 inserted into the uninterruptible terminal 800 with a considerable force while on a ladder or a stepladder. Specifically, in order to pull out the bypass plug 850, the worker may perform an operation of grasping the bypass plug 850 with pliers and pulling it out.

  In addition, when both the terminals 851 and 852 are completely removed from the plug terminal insertion holes 822a and 823a, the frictional force generated between the both terminals 851 and 852 and the plug terminal insertion holes 822a and 823a suddenly increases. Since there is no longer any reaction, the reaction moves in the direction away from each other in both hands H and h. Depending on the work state of the worker, for example, the left hand h hits the watt hour meter 710 and the right hand H hits the worker himself. If such a situation occurs, the watt-hour meter 710 and the bypass plug 850 are damaged or the operator's working posture is lost, and the workability of pulling out the bypass plug 850 is deteriorated.

  An object of the present invention is to provide a plug removal tool for easily removing a plug that is connected to a watt-hour meter installed on the consumer side and that is inserted into an uninterruptible terminal for stopping and releasing power supply. And

  The present inventors have found that by using a slide block structure, the reaction caused when the bypass plug is pulled out from the uninterruptible terminal is suppressed, and the present invention described below has been completed.

  The plug removal tool according to the present invention is inserted into an uninterruptible terminal provided on a load-side power line between a load-side terminal of a watt-hour meter provided for a power consumer and the power load facility of the consumer. A plug removing tool for removing a bypass plug, which is a main body part, a terminal contact part formed on the main body part and capable of contacting the uninterruptible terminal, and the terminal among the main body parts A base member holding part formed at a position different from the contact part and made of a non-conductive material having a base member holding part for maintaining the terminal contact part in a state where the terminal contact part is in contact with the uninterruptible terminal. A movable member made of a non-conductive material having a member, a plug holding portion for detachably holding the bypass plug, and the pullable direction in which the bypass plug is separated from the uninterruptible terminal. Comprising a slide mechanism for mounting the member to slidably said base member is formed in the movable member, and the sliding operation member for sliding the movable member in the drawing direction.

  The plug removal tool according to the present invention may further include a biasing unit that biases the movable member in a direction opposite to the pulling direction.

  In the plug removal tool according to the present invention, the biasing means is a compression coil spring, and each of the base member and the movable member accommodates half of the compression coil spring in the pulling direction on opposite sides. A base member side concave portion and a movable member side concave portion having a depth that can be formed are formed, and the lengths of the base member side concave portion and the movable member side concave portion in the drawing direction are shorter than the natural length of the compression coil spring. Also good.

  In the plug removal tool according to the present invention, it is preferable that the compression coil is disposed in a space formed by the base member side recess and the movable member side recess.

  In the plug removal tool according to the present invention, the terminal contact portion may be a pair of contact legs, and the bypass plug may be formed on the main body so as to be disposed between one and the other of the contact legs. .

  In the plug removal tool according to the present invention, the inside of the pair of contact legs extends in parallel with the pulling direction, and the plug holding portion has a pair of plug locking portions for locking the outside of the bypass plug. The outer dimension of the pair of plug locking portions may be substantially equal to the inner dimension of the pair of contact legs.

  In the plug removal tool according to the present invention, the sliding operation members are opposite to each other in a direction perpendicular to the pulling direction from a predetermined position in the main body portion between the plug holding portion and the base member holding portion. A pair of operating levers extending in the direction may be used.

  According to the plug removal tool of the present invention, since the base member and the movable member are included, the bypass plug can be locked to the movable member in a state where the contact surface of the base member is in contact with the uninterruptible terminal. . For this reason, the bypass plug can be easily pulled out from the uninterruptible terminal by moving the movable member relative to the base member.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. This is merely an example, and the technical scope of the present invention is not limited to this.

  First, the configuration of the plug removal tool 1 will be described with reference to FIGS.

  As shown in FIG. 1, the plug removal tool 1 includes a base member 10, a movable member 30, and a sliding operation member 40.

  As shown in FIG. 2, the base member 10 is formed of a plate-like member made of a nonconductive material having one surface as a front surface 12 and the other surface as a back surface 13. The base member 10 includes a base body portion 11, a pair of terminal contact portions 16 and 16 formed at a part of the periphery of the base body portion 11, and a pair of terminal contact portions 16 and 16 of the periphery of the base body portion 11. And a base member holding part 14 formed at a different position.

  The pair of terminal contact portions 16 and 16 extend from the base body portion 11 in parallel with each other. The length D of the terminal contact portion 16 between the side surface of the base main body portion 11 and the contact surface 15 is the length of the bypass plug 850 that is the size between the tip of the terminal 851 or 852 and the tip of the head 856. It is set longer than the dimension (see FIG. 12).

  The pair of terminal contact portions 16 and 16 have contact surfaces 15 and 15 that contact the case 811 of the uninterruptible terminal 800 at their tips, respectively. The insides of the pair of terminal contact portions 16 and 16 have substantially planar sliding surfaces 16a and 16a on which a pair of roll pins 35 and 35 (see FIG. 1) described later slide, respectively. In other words, the base member 10 forms a recess around the base body portion 11 and the pair of terminal contact portions 16 and 16.

  One sliding surface 16a and the other sliding surface 16a are configured such that the pair of roll pins 35 and 35 and the bypass plug 850 can slide between the one sliding surface 16a and the other sliding surface 16a. Is set to be slightly longer than the longer dimension of the width dimension of the head 856 of the bypass plug 850 and the dimension B2 between the outer sides of the pair of roll pins 35 and 35 (see FIG. 3). ing.

  An elongated hole 17 is formed in the center of the base main body 11 so as to pass through an operation lever 41 (see FIG. 3) described later and extend in the direction in which the terminal contact portion 16 extends. The long hole 17 has such a length that the operation lever 41 disposed in the long hole 17 can slide by at least the same length as the lengths of the terminals 851 and 852. Specifically, the length dimension W of the long hole 17 is set to a dimension equal to or larger than the total dimension of the diameter dimension of the operation lever 41 and the length dimension of the terminal 851 or 852.

  On the back surface 13 side of the base main body 11, a recess 18 is formed to accommodate a compression coil spring 50 described later. The recess 18 is formed in a substantially rectangular parallelepiped having a long side in the extending direction of the terminal contact portion 16. The length dimension of the recess 18 is set to a dimension less than the natural length of the compression coil spring 50. Preferably, the length dimension of the recess 18 is set to a dimension slightly shorter than the natural length of the compression coil spring 50. The depth dimension of the recess 18 is set to be approximately equal to the half dimension of the outer diameter of the compression coil spring 50 so that half of the compression coil spring 50 can be accommodated.

  As will be described later, the base member holding portion 14 is a member for the operator to hold so that the contact surface 15 of the terminal contact portion 16 is in contact with the case 811 of the uninterruptible terminal 800. This is a member that abuts against the palm H6 (see FIG. 6). The base member holding portion 14 is formed in a semicircular shape so as to easily come into contact with the palm of the operator.

  As shown in FIG. 3, the movable member 30 includes a movable main body portion 31 and a pair of roll pins 35 and 35 that act as a plug holding portion. The pair of roll pins 35 and 35 are preferably formed of a non-conductive member. Further, the pair of roll pins 35 and 35 are formed in a columnar shape, but are not limited to this, and various shapes can be used as long as they can be locked to the pair of recesses 857 and 857 or the head 856 of the bypass plug 850. Can be changed.

  The movable main body 31 is formed of a plate-shaped member made of a non-conductive material having one surface as a front surface 32 and the other surface as a back surface 33.

  On the surface 32 side of the movable main body 31, a concave portion 37 that accommodates a part of the head 856 of the bypass plug 850 is formed in the vicinity of the end in the longitudinal direction of the movable main body 31. The recess 37 is formed in the movable main body 31 so as to extend in the short direction of the movable main body 31. The depth dimension of the concave portion 37 is larger than the dimension that the head portion 856 projects with respect to the insulating main body portion 855 of the bypass plug 850 so that the concave portion 37 can accommodate a part of the head portion 856 of the bypass plug 850. Is also set to a larger dimension.

  In a region 34 between the end of the movable main body 31 and the recess 37, a pair of roll pins 35 and 35 are formed side by side in the short side direction of the movable main body 31. Further, the pair of roll pins 35 and 35 are formed on the movable main body 31 so as to extend in a direction perpendicular to the surface 32. A dimension B <b> 2 between one roll pin 35 and the other roll pin 35 is set to be shorter than a dimension in the width direction of the head 856 of the bypass plug 850. Preferably, the dimension between one roll pin 35 and the other roll pin 35 is such that one roll pin 35 and the other roll pin 35 can engage with one recess 857 and the other recess 857 of the bypass plug 850, respectively. Set to dimensions. Accordingly, the pair of roll pins 35 and 35 function as a plug holding portion that holds the bypass plug 850 in a removable manner.

  In the center of the movable main body 31, a female screw 38 into which male screws 42 and 44 of a sliding operation member 40 described later are screwed is formed so as to penetrate the front surface 32 and the back surface 33.

  A recess 36 for accommodating the compression coil spring 50 is formed in the vicinity of the end of the surface 32 of the movable main body 31 on the side opposite to the recess 37. The concave portion 36 is formed in a substantially rectangular parallelepiped shape having long sides in the extending direction of the movable main body portion 31. The length dimension of the recess 36 is set to a dimension less than the natural length of the compression coil spring 50. Preferably, the length dimension of the recess 36 is set to a dimension slightly shorter than the natural length of the compression coil spring 50. More preferably, the length of the recess 36 is set to a dimension equal to the length of the recess 18. The depth dimension of the recessed part 36 is set to a dimension substantially equal to the half dimension of the outer diameter of the compression coil spring 50 so that half of the compression coil spring 50 can be accommodated. Therefore, the space formed by combining the recess 18 and the recess 36 (see FIG. 7) can be accommodated in a state in which the compression coil spring 50 is slightly compressed.

  The sliding operation member 40 has operation levers 41 and 43. Male screws 42 and 44 are formed at the end portions of the operation levers 41 and 43, respectively, for being screwed into the female screw 38 of the movable main body 31 and firmly assembled. The length dimension of the operation lever 41 is set to be equal to the total dimension of the length dimension of the operation lever 43 and the thickness dimension of the base main body 11. Accordingly, as shown in FIG. 7, when the operation lever 41 is passed through the long hole 17 and the base member 10 and the movable member 30 are combined, the distance between the front surface 12 and the end of the operation lever 41, and the back surface 23 and the end of the operation lever 43 are substantially equal.

  The plug removal tool 1 further includes a pair of grips 60 as shown in FIG. Each grip 60 includes a cylindrical grip body 61 such as rubber, and a flat washer 63 assembled to an end of the grip body 61. The grip body 61 and the flat washer 63 are joined by a known joining means such as an adhesive so that the inner surface 62 of the grip body 61 and the inner diameter of the flat washer 63 coincide. The diameter of the inner side surface 62 of the grip body 61 and the inner diameter of the flat washer 63 have dimensions that can be fitted to the operation levers 41 and 43.

  As shown in FIG. 5, the plug removal tool 1 is assembled as follows.

  First, the male screws 42 and 44 of the operating levers 41 and 43 are screwed into the female screw 38 of the movable member 30 so that the extending directions of the operating levers 41 and 43 are perpendicular to the front surface 32 and the back surface 33, respectively, and are firmly assembled. .

  Next, the plug removal tool 1 stores the compression coil spring 50 in the recess 36 of the movable member 30 in a slightly compressed state. As a result, the compression coil spring 50 is biased.

  Next, the base member 10 is movable so that the operation lever 41 passes through the long hole 17 and the pair of roll pins 35 and 35 slide on the sliding surfaces 16a and 16a of the pair of terminal contact portions 16, respectively. The member 30 is combined. Thereby, the moving direction of the operation lever 41 is corrected to the longitudinal direction of the long hole 17, that is, the direction in which the terminal contact portion 16 extends, and the moving direction of the pair of roll pins 35 and 35 is also the sliding surfaces 16a and 16a, respectively. , That is, the direction in which the terminal contact portion 16 extends. Therefore, the base member 10 and the movable member 30 are combined so that the back surface 13 of the base member 10 and the front surface 32 of the movable member 30 are in contact with each other while being slidable in the extending direction of the terminal contact portion 16.

  At this time, as shown in FIG. 7, since the compression coil spring 50 is disposed in the space formed by the recess 18 and the recess 36, the position of the end face of the recess 18 and the position of the end face of the recess 36 in the longitudinal direction. Is urged to the end face of the recess 18 and the end face of the recess 36 so as to match. Thereby, the fixed positional relationship between the base member 10 and the movable member 30 is determined. Therefore, it is preferable to determine the position of the long hole 17 with respect to the base member 10 so that the operation lever 41 is positioned on the terminal contact portion 16 side of the long hole 17 in this fixed positional relationship.

  Next, the grips 60 and 60 are inserted into the operation levers 41 and 43 so that the flat washer 63 contacts the front surface 12 of the base member 10 and the back surface 33 of the movable member 30. Thereby, since the flat washer 63 is disposed between the grip body 61 and the surface 12 of the base member 10, even if the operation lever 41 and the grip body 61 move relative to the base member 10. The frictional force between the flat washer 63 and the surface 12 of the base member 10 hardly occurs. Therefore, the force required for the operator to move the operation lever 41 is small.

  In this way, the plug removal tool 1 as shown in FIG. 1 can be obtained.

  Next, with reference to FIGS. 6 to 9, a procedure for using the plug removal tool 1 will be described.

  First, the operator holds the uninterruptible terminal 800 in the left hand h as shown in FIG. 13, and holds the plug removal tool 1 in the right hand H as shown in FIG. Specifically, the operator hangs the index finger H <b> 2 of the right hand H on the grip 60 assembled to the operation lever 41 and the middle finger H <b> 3 on the grip 60 assembled to the operation lever 43. Further, the operator holds the base member holding portion 14 with the palm H6 and the thumb H1 so that the contact surface 15 of the terminal contact portion 16 is in contact with the case 811 of the uninterruptible terminal 800.

  Next, as shown in FIG. 6, the operator engages with the pair of recesses 857 formed in the insulating main body 855 of the bypass plug 850 as shown in FIG. 7, and as shown in FIG. 7. In addition, the contact surface 15 of the terminal contact portion 16 is brought into contact with the case 811 of the uninterruptible terminal 800 so that a part of the head 856 of the insulating main body portion 855 is accommodated in the recess 37. Accordingly, the bypass plug 850 is disposed between the one terminal contact portion 16 and the other terminal contact portion 16, and the insulating main body portion 855 contacts the surface 32 of the movable member 30.

  Next, the operator bends the index finger H2 and the middle finger H3 of the right hand H so that the gap between the index finger H2 and the middle finger H3 and the palm H6 is narrowed.

  At this time, considering the movement of the plug removal tool 1 with reference to the palm H6, the base member holding portion 14 of the base member 10 is in contact with the palm H6. Slide to H6 side. Further, the pair of roll pins 35 and 35 will move in a direction (withdrawal direction) in which the pair of terminals 851 and 852 are withdrawn from the plug terminal insertion holes 822b and 823b through the pair of recesses 857 and 857 and the insulating main body 855, respectively. And

  Considering the movement of the plug removal tool 1 with respect to the index finger H2 and the middle finger H3, the operation levers 41 and 43 are in contact with the index finger H2 and the middle finger H3. Slide toward the index finger H2 and the middle finger H3. Furthermore, the pair of terminal contact portions 16 and 16 tends to move in a direction to push the case 811 of the uninterruptible terminal 800 against the bypass plug 850.

  Then, as shown in FIGS. 8 and 9, the pair of roll pins 35 and 35 slide on the sliding surfaces 16 a and 16 a, and the operation lever 41 slides in the elongated hole 17. And 35, the sliding surfaces 16a and 16a, the long hole 17, and the operating lever 41 are a sliding mechanism for assembling the movable member 30 to the base member 10 so that the bypass plug 850 is slidable in the pulling direction away from the uninterruptible terminal 800. Works. For this reason, since the movable member 30 moves approximately in parallel in the pulling direction, the pair of terminals 851 and 852 are reliably and easily pulled out from the plug terminal insertion holes 822b and 823b.

  At this time, the compression coil spring 50 is compressed as the movable member 30 slides (see FIG. 9), and the biasing force is increased. Accordingly, when the operator extends the index finger H2 and middle finger H3 of the right hand H in a bent state, the concave portion 18 of the base member 10 and the concave portion 36 of the movable member 30 are applied by the biasing force stored in the compression coil spring 50 by compression. The movable member 30 is moved in the direction opposite to the pulling direction so that.

  Further, since the worker does not use the arm force to pull out the bypass plug 850 from the uninterruptible terminal 800, a reaction force is generated when the pair of terminals 851 and 852 are pulled out from the plug terminal insertion holes 822b and 823b, respectively. Absent. For this reason, when the bypass plug 850 is pulled out as in the prior art, the operator does not swing the bypass plug 850 with excessive arm force, so there is no fear that the bypass plug 850 is applied to the watt hour meter 710 or the like.

  In addition, the plug removal tool 1 can be disposed such that the bypass plug 850 can be disposed on the surface 32 of the movable member 30 between the one terminal contact portion 16 and the other terminal contact portion 16. Therefore, the plug removal tool 1 can approach the bypass plug 850 from the direction perpendicular to the surface 32 of the movable member 30. Therefore, the worker can easily engage the bypass plug 850 with the movable member 30 even if the partition wall 870 is raised from the case 811 of the uninterruptible terminal 800 to the extent that it can cover one side surface of the bypass plug 850. Can be stopped.

  As mentioned above, although demonstrated using embodiment of this invention, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

It is a figure which shows the plug removal tool which concerns on this invention. (A) is a front view, (B) shows a BB cross-sectional view. It is a figure which shows the base member of the plug removal tool shown in FIG. (A) is a front view and (B) is a side view. It is a figure which shows a part of movable member and sliding operation member of the plug removal tool shown in FIG. (A) is a front view and (B) is a side view. It is a front view which shows the grip of the plug removal tool shown in FIG. It is a disassembled front view of the plug removal tool shown in FIG. It is a front view for demonstrating the use procedure of the plug removal tool shown in FIG. FIG. 7 is a vertical sectional view of the plug removal tool shown in FIG. 6. It is a front view for demonstrating the use procedure of the plug removal tool following FIG. FIG. 9 is a vertical sectional view of the plug removal tool shown in FIG. 8. It is the schematic explaining the installation state of the uninterruptible terminal which uses the plug removal tool shown in FIG. It is a vertical sectional view of the uninterruptible terminal shown in FIG. It is a figure of the bypass plug used for the uninterruptible terminal shown in FIG. (A) is a front view, (B) is a side view. It is the schematic for demonstrating the operation | work which pulls out a bypass plug from the conventional uninterruptible terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plug removal tool 10 Base member 11 Base main-body part 12 Front surface 13 Back surface 14 Base member holding | maintenance part 15 Contact surface 16 Terminal contact part 16a Sliding surface 17 Elongated hole 18 Recessed part 23 Back surface 30 Movable member 31 Movable main-body part 34 Area 35 Roll pin 36 Concave part 37 Concave part 38 Female screw 40 Sliding operation member 41 Operation lever 42 Male screw 43 Operation lever 44 Male screw 50 Compression coil spring 60 Grip 61 Grip main body 63 Flat washer

Claims (6)

Plug removal for removing a bypass plug inserted into an uninterruptible terminal provided on a load-side power line between a load-side terminal of a watt-hour meter provided for a consumer of power and the consumer's power load facility A tool,
A main body part, a terminal contact part formed on the main body part, which can contact the uninterruptible terminal, and a base member holding part formed at a position different from the terminal contact part in the main body part And a base member made of a non-conductive material having a base member holding part for maintaining the terminal contact part in a state where the terminal contact part is in contact with the uninterruptible terminal,
A movable member made of a non-conductive material having a plug holding portion for detachably holding the bypass plug;
A sliding mechanism for assembling the movable member to the base member in a pulling direction in which the bypass plug is separated from the uninterruptible terminal;
A plug removing tool, comprising: a sliding operation member formed on the movable member and sliding the movable member in the pulling direction.   The plug removal tool according to claim 1, further comprising biasing means for biasing the movable member in a direction opposite to the pulling direction. The biasing means is a compression coil spring;
The base member and the movable member are formed with a base member-side recess and a movable member-side recess having a depth that can accommodate half of the compression coil spring in the pulling direction on the sides facing each other.
The plug removal tool according to claim 2, wherein lengths of the base member side recess and the movable member side recess in the drawing direction are shorter than a natural length of the compression coil spring.   The said terminal contact part is a pair of contact leg, The said main body part is formed in the said main-body part so that arrangement | positioning of the said bypass plug between one side and the other of the said contact leg is possible. Plug removal tool. The inside of the pair of contact legs extends parallel to the pulling direction,
The plug holding portion has a pair of plug locking portions for locking the outside of the bypass plug,
The plug removal tool according to claim 4, wherein an outer dimension of the pair of plug locking portions is substantially equal to an inner dimension of the pair of contact legs. The sliding operation members are a pair of operation levers extending in opposite directions perpendicular to the pulling direction from a predetermined position in the main body portion between the plug holding portion and the base member holding portion, respectively. Item 6. The plug removal tool according to any one of Items 1 to 5.

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