JP2010231917A - Switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch in which a distance between both of electrodes when a movable electrode is opened from a fixed electrode can be easily adjusted to be a set value. <P>SOLUTION: On a rotating operation shaft 16 of an operation mechanism 15 for rotating a movable electrode 5, there is fixed a rotating range regulating lever 25 rotating together with the operation shaft 16, the movable electrode contacts with the rotating range regulating lever each when the movable electrode rotates to a closing position or to an opening position, and position regulating members 26, 27 are provided on a closing position side and an opening position side for regulating rotating ranges of the operation shaft. On a movable electrode 5 supporting conductor 8, there is fixed a stopper 30 for positioning the movable electrode at the opening position by contacting with the movable electrode when the rotating range regulating lever 25 contacts with the opening position side regulating member, in a position-adjustable state. On a part of the stopper 30 contacting with the movable electrode, there is fixed an elastic member 30c for absorbing a shock generated when the movable electrode bumps it. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a switch in which a fixed electrode, a movable electrode, and an operation mechanism for operating the movable electrode are accommodated in a case.

  As a switch that opens and closes an electric circuit of a high-voltage distribution line, as shown in Patent Document 1, it has a structure in which a fixed electrode, a movable electrode, and an operation mechanism that rotates the movable electrode are housed in a case. A switch is used.

  In this type of switch, the fixed electrode support insulator and the movable electrode support insulator are fixed to the case, the fixed electrode is supported by the fixed electrode support insulator, and the movable electrode support conductor is fixed to the movable electrode support insulator. The movable electrode is rotatably connected. The operation mechanism includes an operation shaft that is rotated in one direction (opening direction) and the other direction (closing direction) by an operation handle or the like provided outside the case, a drive lever having one end fixed to the operation shaft, and a drive A link having one end rotatably connected to the other end of the lever and the other end rotatably connected to the movable electrode is provided. In order to insulate between the movable electrode and the operation shaft, at least the link is formed of an insulating material. The movable electrode is provided so as to be able to rotate between the closed position and the open position set by operating by the operation mechanism, and is in a state of being in regular contact with the fixed electrode when in the closed position. The electric circuit is closed, and when it is in the open position, the electric circuit is opened with a set insulation distance from the fixed electrode. In order to prevent the movable electrode from coming into contact with the case by overrunning the movable electrode beyond the open circuit position, in the switch shown in Patent Document 1, when the movable electrode reaches the open circuit position, the base of the movable electrode A stopper for stopping the movable electrode by abutting against the back surface (surface on the case side) is bolted to the movable electrode support conductor.

JP 2007-5146 A

  In a conventional switch, a stopper that restricts the rotation range of the movable electrode toward the open position is bolted to a set fixed position, and the relative positional relationship between the stopper and the movable electrode is determined. The position between the stopper and the movable electrode due to the machining error of the movable electrode, the machining error of the stopper, and the machining error of the bolt through-hole provided in the movable electrode support conductor for passing the bolt to which the stopper is to be passed, etc. There is a problem that the relationship varies and the open position of the movable electrode varies.

  In this type of switch, when the open position of the movable electrode is restricted only by the stopper that abuts the movable electrode, the operation shaft is further operated in the closing direction while the movable electrode is in contact with the stopper. When a force is applied, an excessive force is applied to the operation mechanism, and there is a possibility that a lever or a link (particularly a link made of an insulating material) constituting the operation mechanism may be damaged.

  In order to solve the above problem, means for limiting the rotation range of the operation shaft is provided. However, even if the rotation range of the operating shaft is limited, due to variations in the position of the stopper due to processing errors and assembly errors, the switch is operated with the movable electrode in contact with the stopper before the operating shaft reaches the limit position on the open circuit side. When assembled, the operating shaft can further rotate in the opening direction even after the movable electrode abuts against the stopper during the opening operation, so that an excessive force is applied to the operating mechanism and the components of the operating mechanism may be damaged.

  An object of the present invention is to provide a switch that can appropriately adjust the position of a stopper that determines the open position of the movable electrode during assembly, and can prevent variations in the open position of the movable electrode. There is to do.

  The present invention is provided so as to be able to rotate between a fixed electrode and a set closed position and an open position, and is in a state of being in regular contact with the fixed electrode when in the closed position, and is in the open position. A switch comprising a movable electrode that is sometimes separated from the fixed electrode by a set insulation distance, an operating mechanism for rotating the movable electrode, and a case containing the fixed electrode, the movable electrode, and the operating mechanism Applies to

  In the switch to which the present invention is applied, the fixed electrode is supported by a fixed electrode support insulator attached to the case, and the movable electrode is a movable electrode support conductor fixed to the movable electrode support insulator attached to the case. It is supported rotatably. The operation mechanism includes an operation shaft to be rotated, a drive lever having one end fixed to the operation shaft, one end rotatably connected to the other end of the drive lever, and the other end rotated to the movable electrode. And freely connected links.

  In the present invention, the operation mechanism is fixed to the operation shaft and rotates with the rotation range restriction lever, and when the movable electrode is turned to the closed position and to the open position, the rotation range is restricted. A closed side position restricting member and an open side position restricting member that contact the lever and restrict the rotation range of the operation shaft are provided. The movable electrode support conductor adjusts the position where the stopper that contacts the movable electrode and positions the movable electrode at the open position when the rotation range regulating lever abuts the open circuit side position regulating member contacts the movable electrode. It is attached in the state to get.

  If the rotation range of the operating shaft is only restricted, the movable electrode may overrun when the switch is opened, and the open position may be exceeded and the case may approach or come into contact with the case. If a stopper that directly contacts the movable electrode when it is rotated is provided, the possibility of the overrun of the movable electrode can be eliminated.

  As described above, the rotation range regulating lever that rotates together with the operation shaft and the rotation range of the operation shaft by contacting the rotation range regulating lever when the movable electrode rotates to the closed position and to the open position, respectively. If the closed-side position restricting member and the open-side position restricting member to be regulated are provided, the displacement of the operating shaft in the closing direction and the opening direction can be restricted to a certain range. An unlimited operating force can be prevented from being applied to the operating mechanism, and an unreasonable force can be prevented from being applied to the operating mechanism.

  In addition, as described above, the position where the stopper that contacts the movable electrode and positions the movable electrode at the open position when the rotation range restricting lever contacts the opening-side position restricting member can be adjusted to the position contacting the movable electrode. If it is attached to the movable electrode support conductor, the processing error of the movable electrode, the processing error of the stopper, the processing error of the bolt through hole provided in the movable electrode support conductor for passing the bolt to which the stopper is passed, etc. Even if the positional relationship varies, adjust the position of the stopper when assembling the switch so that the movable electrode just contacts the stopper when the rotation range restricting lever contacts the opening side position restricting member. In addition, since the positional relationship between the movable electrode and the stopper can be adjusted, an excessive force is applied to the operation mechanism when operating the switch. Gukoto can.

  In a preferred aspect of the present invention, the stopper includes a base portion fixed to the movable electrode support conductor and a tip portion where the movable electrode contacts, and the base portion of the stopper penetrates the base portion and the movable electrode support conductor to move the movable electrode. Are fixed to the movable electrode support conductor by two bolts extending parallel to the rotation center axis of the two bolts and two nuts respectively screwed to the two bolts. In this case, at least one of the two bolt through holes provided in the movable electrode support conductor in order to allow the two bolts to pass therethrough is a hole having a larger diameter than the bolt that penetrates the bolt through hole.

  If comprised in this way, the position of a stopper can be adjusted by loosening the nut screwed by the volt | bolt which penetrates a large diameter hole.

  In another preferred aspect of the present invention, the stopper includes a base portion fixed to the movable electrode support conductor and a tip portion against which the movable electrode abuts, and the base portion of the stopper extends in parallel with the rotation center axis of the movable electrode 2. It is fixed to the movable electrode support conductor by a bolt. When the base of the stopper is fixed to the movable electrode support conductor with two bolts, the two bolts may be screwed into the screw holes provided in the movable electrode support conductor, or the movable electrode support conductor may be penetrated. A nut may be screwed into each of the two bolts. In this case, by making at least one of the two bolt through holes provided in the base of the stopper in order to allow the two bolts to pass through each of the bolts, the stopper has a larger diameter than the bolt passing through the bolt through hole. Can be adjusted.

  In another preferred aspect of the present invention, the stopper includes a base portion fixed to the movable electrode support conductor and a tip portion where the movable electrode abuts, and the base portion of the stopper penetrates the base portion and the movable electrode support conductor. It is fixed to the movable electrode support conductor by two bolts extending parallel to the rotation center axis of the movable electrode and two nuts respectively screwed to the two bolts. In this case, one of the two bolt through-holes provided in the movable electrode support conductor in order to penetrate each of the two bolts is a round hole, and among the two bolt through-holes provided in the movable electrode support conductor. The other of these is a long hole extending along an arc centered on the center of one of the bolt through holes, thereby making it possible to adjust the position of the stopper.

  In still another preferred aspect of the present invention, the stopper includes a base portion fixed to the movable electrode support conductor and a distal end portion with which the movable electrode abuts, and the base portion of the stopper extends parallel to the rotation center axis of the movable electrode. It is fixed to the movable electrode support conductor by two bolts. When the base of the stopper is fixed to the movable electrode support conductor with two bolts, the two bolts may be screwed into the screw holes provided in the movable electrode support conductor, or the movable electrode support conductor may be penetrated. A nut may be screwed into each of the two bolts. In this case, one of the two bolt through holes provided in the base portion of the stopper main body in order to allow the two bolts to pass therethrough is a round hole, and of the two bolt through holes provided in the base portion of the stopper main body. The other of these is a long hole extending along an arc centered on the center of one of the bolt through holes, thereby making it possible to adjust the position of the stopper.

  In another preferred aspect of the present invention, the movable electrode support conductor is provided with a stopper support portion having a screw hole extending in a direction perpendicular to the surface of the stopper where the movable electrode contacts. In this case, the stopper is provided so as to protrude from the other surface of the stopper main body so as to extend in a direction perpendicular to the surface of the stopper main body that contacts the movable electrode. A fixed nut, and a lock nut that is tightened to the stopper support portion when screwed into the stud bolt to fix the stopper, and the stopper is rotated by loosening the lock nut and rotating the stud bolt The position where the stopper abuts the movable electrode can be adjusted by advancing and retreating.

  In a preferred aspect of the present invention, the portion of the stopper where the movable electrode abuts is formed by an elastic member.

  As described above, if the portion where the movable electrode contacts the stopper is formed of an elastic member, the impact generated when the movable electrode contacts the stopper can be reduced. It can be prevented from being damaged.

  According to the present invention, the rotation range restriction lever that rotates together with the operation shaft, and the rotation range of the operation shaft that comes into contact with the rotation range restriction lever when the movable electrode rotates to the closed position and to the open position, respectively. A closed-side position restricting member and an open-side position restricting member are provided to restrict the rotation range of the operating shaft, and a stopper that directly contacts the movable electrode when the movable electrode is rotated to the open position is provided. Therefore, the possibility that the movable electrode is overrun can be eliminated.

  Further, according to the present invention, the stopper that contacts the movable electrode and positions the movable electrode at the open position when the rotation range restricting lever contacts the opening-side position restricting member can be adjusted to a position where the movable electrode contacts the movable electrode. Since it is attached to the movable electrode support conductor in a state, the processing error of the movable electrode, the processing error of the stopper, the processing error of the bolt through hole provided in the movable electrode support conductor for passing the bolt to which the stopper is passed, etc. Even if the positional relationship varies, adjust the position of the stopper when assembling the switch so that the movable electrode just contacts the stopper when the rotation range restricting lever contacts the opening side position restricting member. In addition, the positional relationship between the movable electrode and the stopper can be adjusted to ensure that excessive force is not applied to the operating mechanism when operating the switch. Can.

  Further, according to the present invention, since the portion of the stopper where the movable electrode abuts is formed by the elastic member, the impact generated when the movable electrode abuts on the stopper is alleviated, and the movable electrode and the stopper are damaged by the impact. Can be prevented.

It is sectional drawing which shows the closed circuit state of the switch concerning one Embodiment of this invention. It is sectional drawing which shows the open circuit state of the switch concerning one Embodiment of this invention. It is sectional drawing of the principal part which showed the structure of the attaching part of the stopper of the switch concerning the embodiment. It is sectional drawing of the principal part which showed the modification of the attaching part of the stopper of the switch concerning the embodiment. It is sectional drawing of the principal part which showed the other modification of the attaching part of the stopper of the switch concerning the embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a switch according to an embodiment of the present invention. FIG. 1 shows a closed state, and FIG. 2 shows an opened state. In these figures, reference numeral 1 denotes a switch case formed of a steel plate, and a case body having a fixed electrode and a movable electrode is accommodated in the case 1. The case 1 shown in the figure has a case main body 101 formed so as to have a substantially rectangular parallelepiped shape as a whole and having an opening at the lower end, and a ceiling portion 101a formed in a gable shape, and an opening at the lower end of the case main body 101. And a bottom lid 102 for closing. 1 and 2 show a structure of the inside of the case 1 taken along a section near one end in the longitudinal direction.

  On the opposite side walls 101b and 101c of the case main body 101, bulged portions 101b1 and 101c1 are formed to reinforce both side wall portions, and a column fitting 103 is welded to the bulged portions 101b1 and 101c1. In the opening at the lower end of the case body 101, a flange portion 101d protruding outward and a skirt portion 101e bent from the outer peripheral portion of the flange portion 101d and protruding downward are formed.

  The bottom lid 102 is formed in a box shape with an upper end opened, and has a flange portion 102d protruding outward and a skirt bent downward from the outer peripheral portion of the flange portion 102d and protruding downward. Part 102e is formed, and the bottom part 102e is fitted inside the bottom part 101e of the case body 101 without a gap.

  At the lower end of the bottom part 101e of the case body 101, four tongue-like protruding parts 101f protruding downward are formed. In FIG. 1, of the four protrusions 101f, two protrusions are provided at positions near one end in the longitudinal direction of the case main body (closer to the front in FIG. 1) and face the opposing direction of the side walls 101b and 101c. Part 101f is shown. The other two protruding portions 101f are provided so as to face each other in the opposing direction of the side walls 101b and 101c at a position near the other end in the longitudinal direction of the case body 101 (the depth direction in FIG. 1).

  At the lower end of the bottom part 102e of the bottom cover 102, a tongue-like protrusion that overlaps each protrusion part 101f of the case body when the bottom part 102e of the bottom cover 102 is fitted inside the bottom part 101e of the case body 101 A portion 102 f is formed, and the protruding portions 101 f and 102 f that are overlapped with each other are fastened by a bolt 103 and a nut 104, and the bottom lid 102 is fixed to the case main body 101. The packing 105 is inserted in a compressed state between the flange portion 102d provided at the upper end opening of the bottom lid 102 and the flange portion 101d provided at the lower end of the case body 101. With this packing, the bottom lid 102 and The airtightness of the joint with the case body 101 is maintained.

  The upper end of the three-phase fixed electrode support insulator 2 and the upper end of the three-phase movable electrode support insulator 3 are fixed to a frame fixed to the upper part of the case body 101. The support insulators 2 and 3 for each phase are arranged side by side in the width direction of the case body (left and right in FIG. 1), and the fixed electrode element 4 is fixed to the lower end of the fixed electrode support insulator 2 for each phase. The movable electrode 5 is supported at the lower end of the movable electrode support insulator 3.

  The fixed electrode element 4 is a known element including a fixed electrode 401 supported by a conductor fixed to the insulator 2 and a slit arc extinguishing portion 402 disposed at a position adjacent to the fixed electrode. Inside the slit arc extinguishing section 402, a movable electrode passage through which the movable electrode 5 that contacts and separates from the fixed electrode 401 and a slit that draws an arc generated when the movable electrode moves away from the fixed electrode 401 are formed. Has been. The slit arc extinguishing portion 402 is formed of a resin (for example, a urea resin or a polyacetal resin) that generates an arc extinguishing gas when heated by the arc, and the arc extinguishing gas when heated by the arc. Is generated. Reference numeral 6 denotes an insulating cover that is attached to the lower end of the fixed electrode support insulator 2 and covers the conductor to which the fixed electrode 401 is fixed. A terminal 7 connected to the fixed electrode penetrates the insulating cover 6 and is led out into the case 1.

  The movable electrode 5 includes a base portion 501 that is rotatably connected to a movable electrode support fitting 8 fixed to the movable electrode support insulator 3 via a pin 9, and a rear end portion that includes a bolt and a nut at the front end of the base portion 501. And a square-shaped electrode portion 502 fastened by the fastening means 10. An insulating cover 11 that covers substantially half of the movable electrode support conductor 8 is attached to the lower end of the movable electrode support insulator 3, and a terminal 12 connected to the movable electrode support conductor 8 passes through the insulating cover 11 and enters the case 1. Has been derived. The terminals 7 and 12 are led out to the outside through a bushing provided through the side wall of the longitudinal end of the case 1 and connected to the distribution line.

  The movable electrode 5 has a closed position where the tip end 502a of the electrode portion 502 is normally in contact with the fixed electrode 401 with a predetermined contact margin as shown in FIG. 1, and the tip end portion as shown in FIG. 502 a is provided so as to be able to rotate between an open circuit position where a predetermined insulating distance is provided between the fixed electrode 401 and the fixed electrode 401.

  An operation mechanism 15 is provided in the case 1 to operate the movable electrode 5. The operation mechanism 15 includes an operation shaft 16 provided at a position near the upper fixed electrode support insulator 2 in the case so as to extend in the longitudinal direction of the case and rotatably supported on the case 1 by a bearing (not shown). A drive lever 17 having one end fixed to 16, one end rotatably connected to the other end of the drive lever 17 via a pin 18, and the other end rotated to a base 501 of the movable electrode 5 via a pin 19. The link 20 is connected freely. The link 20 is formed of an insulating material, and the operation shaft 16 and the movable electrode 5 are insulated by this link.

  One end of the operation shaft 16 is connected to an operation handle (not shown) disposed outside the case 1 via a fast-moving mechanism such as a toggle mechanism. The operation shaft 16 is operated by operating the operation handle in one direction and the other direction. The shaft 16 can be rotated at once in one direction and the other direction.

  When the operating shaft 16 is rotated clockwise in the drawing in the closed state shown in FIG. 1, the lever 17 rotates clockwise, and the link 20 shows the movable electrode 5 as shown in FIG. Turn counterclockwise toward the open position. When the operating shaft 16 is rotated counterclockwise in the drawing in the closed state shown in FIG. 2, the lever 17 rotates counterclockwise, and the link 20 moves the movable electrode 5 as the lever rotates. Rotate clockwise toward the closed position shown in FIG.

  In order to limit the rotation range of the operation shaft 16, the rotation range regulating lever 25 fixed to the operation shaft 16 and rotating together with the operation shaft and the movable electrode 5 rotate to the closed position shown in FIG. A closed side position restricting member 26 and an open side position restricting member 27 are provided that abut against the rotation range restricting lever 25 and restrict the rotational range of the operating shaft 16 when rotated to the indicated open position. In the example shown in the figure, the closing side position regulating member 26 is fixed to the metal plate 28 that is positioned in the vicinity of the movable electrode support insulator 3 and fixed to the case 1, and is positioned in the vicinity of the fixed electrode support insulator 2. An open circuit side position restricting member 27 is fixed to a metal plate 29 fixed to 1.

  As shown in FIG. 2, the movable electrode support conductor 8 has a stopper for positioning the movable electrode 5 at the open position by contacting the movable electrode 5 when the rotation range restricting lever 25 is in contact with the open position-side position restricting member 27. 30 is attached in a state in which the position of contact with the movable electrode 5 can be adjusted.

  The stopper 30 includes a base portion 30 a fixed to the movable electrode support conductor 8 and a distal end portion 30 b with which the base portion 501 of the movable electrode 5 abuts. The base 30a of the stopper is screwed into the two bolts 31 and 32, which extend through the base 30a and the movable electrode support conductor 8 and extend parallel to the rotation center axis of the movable electrode 5, respectively. The movable electrode support conductor 8 is fixed by two nuts (not shown). In the present embodiment, at least one of the two bolt through holes provided in the movable electrode support conductor in order to allow the two bolts 31 and 32 to pass therethrough (the bolt through hole through which the bolt 31 or 32 passes) is the bolt. The stopper 30 is made of a large-diameter bolt through hole with a nut larger than the bolt (31 or 32) passing through the through-hole, and with the nuts screwed into the bolts 31 and 32 loosened. The position of the stopper 30 in contact with the movable electrode 5 can be finely adjusted by displacing by the difference between the inner diameter and the outer diameter of the bolt (31 or 32) penetrating the bolt through hole.

  The distal end portion 30b of the stopper 30 is provided with a plate-like portion 30b1 having a surface facing the base end portion 501 of the movable electrode 5 in the open position, and the surface of the plate-like portion 30b1 on the movable electrode side is elastic such as rubber. The member 30c is fixed. That is, the portion of the stopper 30 that contacts the movable electrode is made of an elastic member.

  In the switch according to the present embodiment, as shown in FIG. 2, the base end portion 501 of the movable electrode 5 is just the elasticity of the stopper 30 when the rotation range restricting lever 25 comes into contact with the opening side position restricting member 27. The position of the stopper 30 is adjusted so as to be in contact with the member 30c.

  The illustrated switch is attached to the utility pole using the pole fitting 103 and inserted in the middle of the distribution line. When the system is normal, the movable electrode 5 is displaced to the closed position as shown in FIG. This closes the electric circuit of the system. When an accident occurs in the system or when the system is inspected, the electric circuit of the system is opened by displacing the movable electrode 5 to the open position as shown in FIG.

  In the switch according to the present embodiment, the rotation range restriction lever 25 that rotates together with the operation shaft 16 and the rotation range restriction lever 25 when the movable electrode 5 rotates to the closed position and to the open position, respectively. When the closed-side position restricting member 26 and the open-side position restricting member 27 that contact and restrict the rotation range of the operation shaft 16 are provided to restrict the rotation range of the operation shaft 16 and the movable electrode 5 rotates to the open position. Since the stopper 30 that directly contacts the movable electrode 5 is provided, the possibility that the movable electrode 5 may overrun past the open circuit position can be reliably eliminated.

  Further, in the switch according to this embodiment, the stopper 30 that contacts the movable electrode 5 and positions the movable electrode 5 at the open circuit position when the rotation range regulating lever 25 contacts the open circuit position regulating member 27 is provided with the movable electrode. Since it is attached to the movable electrode support conductor 8 in a state in which the position of contact with the movable electrode 5 can be adjusted, the bolts provided on the movable electrode support conductor to pass the machining error of the movable electrode 5, the machining error of the stopper 30, and the bolts to which the stopper 30 is attached. Even if the positional relationship between the stopper 30 and the movable electrode 5 varies due to a processing error of the through hole, the position of the stopper 30 is adjusted when the switch is assembled, and the rotation range restriction lever 25 is moved to the open side position. The positional relationship between the movable electrode 5 and the stopper 30 is adjusted so that the movable electrode 5 just contacts the stopper 30 when contacting the regulating member 27. Bets for can, can be reliably prevented from excessive force on the operating mechanism when operating the switch is applied.

  Further, in the switch according to the present embodiment, the portion of the stopper 30 with which the movable electrode 5 abuts is formed by the elastic member 30c. Therefore, the impact generated when the movable electrode 5 abuts against the stopper 30 is alleviated and the impact is reduced. It is possible to prevent the movable electrode and the stopper from being damaged.

  In the switch according to the present embodiment, when an accident occurs in the case 1 and the internal pressure of the case rises, the bottom cover 102 is displaced downward while deforming the tongue-like protrusions 101f and 102f. The case body 101 is detached and the pressure in the case is released. At this time, since the bottom cover 102 is held in a state of being connected to each other by the protruding portions 101f and 102f, there is no possibility that the bottom cover 102 falls to the ground. Such a pressure relief structure is already known as disclosed in JP-A-8-31275. In the switch to which the present invention is applied, the structure for releasing the pressure in the case is not limited to that shown in the present embodiment.

  In the above example, at least one of the two bolt through holes provided in the movable electrode support conductor so as to pass through the two bolts 31 and 32 that fix the stopper 30 to the movable electrode support conductor 8 is passed through the bolt. Although the position of the stopper 30 can be adjusted by making the hole larger in diameter than the bolt that penetrates the hole, the present invention is not limited to such a configuration.

  For example, by making at least one of the two bolt through holes provided in the base portion 30a of the stopper 30 in order to allow the two bolts 31 and 32 to pass through, respectively, a hole having a larger diameter than the bolt penetrating the bolt through hole. In addition, the position of the stopper 30 can be adjusted. In this case, the two bolts 31 and 32 may be screwed into the screw holes provided in the movable electrode support conductor 8 without providing nuts to be screwed into the two bolts 31 and 32.

  Further, the stopper 30 has two bolts extending through the base portion 30a and the movable electrode support conductor 8 in a direction parallel to the rotation center axis of the movable electrode 5, and two nuts screwed to these bolts. When the stopper 30 is attached to the movable electrode support conductor 8 as described above, as shown in FIG. 3, one of the two bolt through holes provided in the movable electrode support conductor 8 in order to allow the two bolts to pass therethrough respectively. (In the example of FIG. 3, a bolt through hole (not shown) for penetrating the bolt 31) is a round hole, and the other of the two bolt through holes provided in the movable electrode support conductor 8 (bolt through hole through which the bolt 32 is passed). The position of the stopper 30 can also be adjusted by making 33 a long hole extending along an arc centered on the center of one of the bolt through holes.

  Also, as shown in FIG. 4, among the two bolt through holes provided in the base portion 30 a of the stopper 30 in order to allow the two bolts to pass through, the bolt penetration provided in the base portion 30 a in order to pass through one bolt 32. The hole is a round hole, and the bolt through hole 34 provided in the base portion 30a of the stopper 30 for penetrating the other bolt 31 extends along an arc centering on the center of the bolt through hole through which the one bolt 32 passes. It may be a hole. In FIG. 4, reference numeral 35 denotes a bolt through hole provided in the movable electrode support conductor 8 in order to pass a bolt 31 (not shown) provided through the bolt through hole 34.

  As shown in FIG. 4, when the bolt through-hole formed in the base 30a of the stopper is a long hole, the bolts 31 and 32 are moved to the movable electrode without providing a nut screwed into the two bolts 31 and 32. You may make it screwed in the screw hole provided in the support conductor 8. FIG.

  FIG. 5 shows a modification of the stopper used in the present invention. In this example, similarly to the stopper 30 used in the embodiment shown in FIGS. 1 to 4, a stopper support portion 36 formed in a shape having a base portion 36a and a tip portion 36b is provided, and this stopper support portion is provided. A base portion 36 a of 36 is fixed to the movable electrode support conductor 8 by bolts 37 and 38. A screw hole extending in a direction perpendicular to the surface of the stopper support 36 that penetrates the plate-like portion 36b1 provided at the tip 36b of the stopper support 36 and contacts the movable electrode of the stopper is formed. The stopper 30 ′ is a plate-like stopper body 30 a ′ having a surface with which the base end portion 501 of the movable electrode 5 abuts, and a direction protruding perpendicularly from the surface that protrudes from the other surface of the stopper body 30 a ′ and contacts the movable electrode. The stud bolt 30b 'screwed into the screw hole provided in the plate-like portion 36b1 of the stopper support portion 36 and the movable electrode of the stopper main body 30a' are affixed to the surface where they abut. An elastic member 30c ′ and a lock nut 30d ′ that is screwed into the stud bolt 30b ′ and is fastened to the plate-like portion 36b1 of the stopper support portion 36 when the stopper 30 ′ is fixed are provided. By rotating the stud bolt 30b 'with the 30d' loosened, the stopper 30 'can be advanced and retracted to adjust the position where the stopper contacts the movable electrode 5. It is comprised so that.

  In the example shown in FIG. 5, the stopper support 36 is bolted to the movable electrode support conductor 8, but the stopper support 36 may be provided integrally with the movable electrode support conductor 8.

DESCRIPTION OF SYMBOLS 1 Case 101 Case main body 102 Bottom cover 2 Fixed electrode support insulator 3 Movable electrode support insulator 4 Fixed electrode element 401 Fixed electrode 402 Slit arc extinguishing part 5 Movable electrode 501 Base end part of movable electrode 502 Electrode part 8 Movable electrode support conductor 15 Operation mechanism 17 Lever 20 Link 25 Rotation range restriction lever 26 Closing side position restriction member 27 Opening side position restriction member 30 Stopper 30a Base part 30b Tip part 31 Bolt 32 Bolt 30 'Stopper 30a' Stopper body 30b 'Stud bolt 30c' Elastic member 36 Stopper support

Claims (7)

When the fixed electrode is provided so as to be able to rotate between the set closed position and the open position and is in the closed position, the fixed electrode is in regular contact with the fixed electrode, and is in the open position. A movable electrode that is in a state of being separated from the fixed electrode by an insulation distance, an operation mechanism that rotates the movable electrode, and a case that houses the fixed electrode, the movable electrode, and the operation mechanism. The fixed electrode is supported by a fixed electrode support insulator attached to the case, the movable electrode is rotatably supported by a movable electrode support conductor fixed to the movable electrode support insulator attached to the case, and the operation The mechanism is an operation shaft that is rotated, a drive lever having one end fixed to the operation shaft, one end rotatably connected to the other end of the drive lever, and the other end rotatably connected to the movable electrode. Was In switchgear and a tank,
The operation mechanism includes a rotation range restriction lever fixed to the operation shaft and rotating together with the operation shaft, and the rotation range restriction lever when the movable electrode rotates to a closed position and to an open position, respectively. A closed side position restricting member and an open side position restricting member that abut on and regulate the rotation range of the operating shaft,
The movable electrode support conductor has a stopper that contacts the movable electrode and positions the movable electrode at the open position when the rotation range regulating lever comes into contact with the opening-side position regulating member. It is attached in a state where the contact position can be adjusted,
A switch characterized by. The stopper includes a base portion fixed to the movable electrode support conductor and a tip portion with which the movable electrode abuts.
The base portion of the stopper includes two bolts that pass through the base portion and the movable electrode support conductor and extend in parallel with the rotation center axis of the movable electrode, and two nuts that are screwed to the two bolts, respectively. Fixed to the movable electrode support conductor by
At least one of the two bolt through holes provided in the movable electrode support conductor for penetrating the two bolts, respectively, is a hole having a larger diameter than the bolt penetrating the bolt through hole;
The switch according to claim 1. The stopper includes a base portion fixed to the movable electrode support conductor and a tip portion with which the movable electrode abuts.
The base of the stopper is fixed to the movable electrode support conductor by two bolts extending parallel to the rotation center axis of the movable electrode,
At least one of the two bolt through holes provided in the base of the stopper for penetrating the two bolts, respectively, is a hole having a larger diameter than the bolt penetrating the bolt through hole;
The switch according to claim 1. The stopper includes a base portion fixed to the movable electrode support conductor and a tip portion with which the movable electrode abuts.
The base of the stopper includes two bolts that pass through the base and the movable electrode support conductor and extend parallel to the rotation center axis of the movable electrode, and two nuts that are screwed to the two bolts, respectively. Fixed to the movable electrode support conductor by
One of the two bolt through holes provided in the movable electrode support conductor for penetrating the two bolts is a round hole,
The other of the two bolt through holes provided in the movable electrode support conductor is a long hole extending along an arc centered on the center of the one bolt through hole,
The switch according to claim 1. The stopper includes a base portion fixed to the movable electrode support conductor and a tip portion with which the movable electrode abuts.
The base of the stopper is fixed to the movable electrode support conductor by two bolts extending parallel to the rotation center axis of the movable electrode,
One of the two bolt through holes provided in the base portion of the stopper in order to allow the two bolts to pass therethrough is a round hole,
The other of the two bolt through holes provided in the base of the stopper is a long hole extending along an arc centered on the center of the one bolt through hole,
The switch according to claim 1. A stopper support portion having a screw hole extending in a direction perpendicular to the surface of the stopper that the movable electrode contacts is provided on the movable electrode support conductor,
The stopper is provided with a stopper main body having a surface on which the movable electrode abuts on one surface, and extends from the other surface of the stopper main body so as to extend in a direction perpendicular to the surface on which the movable electrode abuts. A screw bolted stud bolt, and a lock nut that is screwed to the stud bolt and fastened to the stopper support portion when fixing the stopper;
2. The switch according to claim 1, wherein the stopper is advanced and retracted by loosening the lock nut and rotating the stud bolt to adjust a position where the stopper contacts the movable electrode.   The switch according to any one of claims 1 to 6, wherein a portion of the stopper which the movable electrode contacts is made of an elastic member.

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