WO2019038946A1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

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Publication number
WO2019038946A1
WO2019038946A1 PCT/JP2018/001286 JP2018001286W WO2019038946A1 WO 2019038946 A1 WO2019038946 A1 WO 2019038946A1 JP 2018001286 W JP2018001286 W JP 2018001286W WO 2019038946 A1 WO2019038946 A1 WO 2019038946A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
iron core
fixed
movable
circuit breaker
Prior art date
Application number
PCT/JP2018/001286
Other languages
English (en)
Japanese (ja)
Inventor
智也 出口
雄大 相良
隆之介 今枝
桂州 近藤
幸本　茂樹
貢 森
真一 舛田
説志 岩下
聡介 内野
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/JP2017/029816 external-priority patent/WO2019038813A1/fr
Priority claimed from JP2017216279A external-priority patent/JP6922673B2/ja
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201880052996.7A priority Critical patent/CN111052288B/zh
Priority to TW107122090A priority patent/TWI670741B/zh
Publication of WO2019038946A1 publication Critical patent/WO2019038946A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • the present invention relates to a circuit breaker having a fixed contact and a movable contact, and provided with an electromagnetic operation mechanism for closing the movable contact to the fixed contact.
  • the conventional circuit breaker includes a toggle mechanism and a closing spring, and utilizes the energy released when the stored closing spring is released. It has been common to move the movable contact past the dead center of the part.
  • the closing speed of the movable contact can be increased by closing the movable contact by passing the dead center of the toggle mechanism, while opening the movable contact beyond the dead center even at the time of interruption.
  • the number of parts increases and the structure of the circuit breaker becomes complicated.
  • Patent Document 2 discloses an electromagnetic operation-type circuit breaker in which the movable contact is closed by the electromagnetic operation mechanism and the opening of the movable contact is performed by the opening spring. It is disclosed.
  • the present invention reduces the number of components while securing the closing speed of the movable contact in a circuit breaker which performs closing of the movable contact by the electromagnetic operation mechanism and opening of the movable contact by the opening spring.
  • the purpose is to obtain a circuit breaker that can be
  • the circuit breaker of the present invention includes an open / close contact for opening and closing an electric path, an opening spring, a toggle mechanism, and an electromagnetic operation mechanism.
  • the opening spring urges the opening and closing contacts in the opening direction, and when the opening and closing contacts move from the open state to the closed state, the urging force, which is a force urging the opening and closing contacts in the opening direction, increases.
  • the toggle mechanism unit changes the open / close contact from the open state to the closed state.
  • the electromagnetic operation mechanism unit has a movable iron core that causes the on / off contact to be closed from the open state to the toggle mechanism unit by movement against the biasing force, and a first adsorption surface having a first adsorption surface for adsorbing the movable iron core.
  • the movable core has a fixed core shorter than the moving distance of the movable core.
  • the circuit breaker by this invention is effective in the ability to reduce the number of parts which comprise a circuit breaker, ensuring the closing speed
  • FIG. 2 is a diagram showing a configuration example of a circuit breaker according to a first embodiment.
  • FIG. 2 is a diagram showing an example of the configuration of the circuit breaker according to the first embodiment inside a case
  • the figure which expanded the upper part of the electromagnetic operation mechanism part shown in FIG. 2 and the electromagnetic operation mechanism part The figure which expanded the electromagnetic operation mechanism part shown in FIG. 2
  • FIG. 1 A figure showing an example of composition of a circuit breaker concerning Embodiment 2
  • Plan view of the electromagnetic operation mechanism according to the second embodiment Side view of the electromagnetic operation mechanism according to the second embodiment
  • figure showing an example of composition of a magnetic board concerning Embodiment 2 Explanatory drawing of the connection method of the 1st division iron core and the 2nd division iron core by the 1st connection member concerning the 2nd embodiment, the 2nd connection member, the 3rd connection member, and the 4th connection member
  • FIG. 3 A figure showing an example of composition of a magnetic board which constitutes a fixed iron core of an electromagnetic operation mechanism part concerning Embodiment 3
  • Top view of the electromagnetic operation mechanism according to the third embodiment The figure which shows the state by which the electromagnetic control mechanism was fixed to the support part which protrudes from the partition wall of the housing
  • circuit breaker concerning the embodiment of the present invention is explained in detail based on a drawing.
  • the present invention is not limited by the embodiment.
  • the circuit breaker according to the first embodiment is a circuit breaker that opens and closes an electric path such as a low voltage distribution line, and detects at least one of an overcurrent and a leakage current to cut off the electric path.
  • the positive direction of Z-axis is upward
  • the negative direction of Z-axis is downward
  • the positive direction of X-axis is rightward
  • the negative direction of X-axis is leftward
  • the positive direction of Y-axis is forward
  • the Y-axis negative direction is the rear.
  • clockwise and counterclockwise mean clockwise and counterclockwise in the drawings described later.
  • FIG. 1 is a view showing a configuration example of a circuit breaker according to a first embodiment
  • FIG. 2 is a view showing a configuration example inside a case of the circuit breaker according to the first embodiment.
  • 3 is an enlarged view of the electromagnetic operation mechanism shown in FIG. 2 and an upper portion of the electromagnetic operation mechanism
  • FIG. 4 is an enlarged view of the electromagnetic operation mechanism shown in FIG.
  • FIG. 5 is a diagram showing a closing completion state of the circuit breaker according to the first embodiment.
  • the circuit breaker 1 includes a housing 2 formed of an insulating member, a first fixed conductor 10 connected to a power source side conductor (not shown), and A flexible conductor having a flexibility by electrically connecting the second fixed conductor 11 connected to the load-side conductor, the mover 20 having the movable contact 21, the second fixed conductor 11 and the mover 20 And 30.
  • the movable contact 21 is an example of a switching contact.
  • the first fixed conductor 10 penetrates the wall portion 3 of the housing 2 from the outside of the housing 2 and reaches the first space portion 7.
  • the one end 10a of the first fixed conductor 10 protrudes to the outside and is connected to the power supply side conductor (not shown), and the other end 10b of the first fixed conductor 10 is disposed in the first space 7 and fixed A contact 13 is provided.
  • the second fixed conductor 11 penetrates the wall portion 3 of the housing 2 from the outside of the housing 2 and reaches the first space portion 7 similarly to the first fixed conductor 10.
  • One end 11 a of the second fixed conductor 11 protrudes to the outside and is connected to a load-side conductor (not shown), and the other end 11 b of the second fixed conductor 11 is disposed in the first space 7.
  • a movable contact 21 is provided at one end 20 a of the mover 20, and the other end 20 b of the mover 20 is connected to one end 30 a of the flexible conductor 30.
  • the other end 30 b of the flexible conductor 30 is connected to the other end 11 b of the second fixed conductor 11.
  • circuit breaker 1 is rotatably held by the holder 40 rotatably attached to the other end 11 b of the second fixed conductor 11, the contact pressure spring 41 held by the holder 40, and the holder 40. And a mover pin 42.
  • the contact pressure spring 41 urges the mover 20 to rotate clockwise about the mover pin 42, and the fixed contact when the moveable contact 21 provided on the mover 20 is connected to the fixed contact 13.
  • a contact pressure is applied between the contact 13 and the movable contact 21.
  • the circuit breaker 1 includes a toggle mechanism 50 connected to the mover 20, an electromagnetic operation mechanism 60 for moving the mover 20 via the toggle mechanism 50, a toggle mechanism 50, and an electromagnetic operation mechanism 60.
  • a transmission mechanism unit 70 to be connected and a tripping mechanism unit 80 for maintaining the closing completion state of the circuit breaker 1 and releasing the closing completion state are provided.
  • the toggle mechanism 50 is disposed across the first space 7 and the second space 8, and the electromagnetic operation mechanism 60, the transmission mechanism 70, and the tripping mechanism 80 have a second mechanism. It is disposed in the space portion 8.
  • the configuration including the toggle mechanism 50 and the tripping mechanism 80 is also referred to as a switch.
  • the closed state means a state in which the fixed contact 13 and the movable contact 21 are in contact
  • the closed state means that the closing of the movable contact 21 is completed, and the fixed contact 13 and the movable contact 21 Contact is maintained.
  • the closing operation or closing operation refers to an operation or operation of moving the movable contact 21 to bring it into contact with the fixed contact 13.
  • the tripping operation or tripping operation indicates the motion or operation of moving the movable contact 21 away from the fixed contact 13.
  • the operation arm 51 whose one end 51 a is rotatably coupled to the mover 20 by the mover pin 42 and the one end 53 a is the other end 51 b of the operation arm 51.
  • a connecting plate 53 rotatably connected by a link pin 52, a shaft 54 fixed to the other end 53b of the connecting plate 53, fixed to a shaft 54 rotating about an axis 56, and the shaft 54 together with the shaft 54 And a lever 55 that rotates around 56.
  • the operation arm 51 is an example of a first link
  • the connection plate 53 is an example of a second link.
  • the electromagnetic operation mechanism unit 60 is disposed below the lever 55, and supports the support units 5 and 6 that project from the insulating wall 4 of the housing 2 toward the second space unit 8. It is fixed.
  • the electromagnetic operation mechanism unit 60 is a movable core that can reciprocate linearly in the vertical direction with a fixed iron core 61 formed of a magnetic material and an electromagnetic coil 62 fixed inside the fixed iron core 61.
  • An iron core 63 and a drive shaft 64 fixed to the movable iron core 63 are provided.
  • the drive shaft 64 reciprocates in the vertical direction at a position spaced apart from the axial center 56 in the left direction.
  • the movable iron core 63 and the drive shaft 64 may be fixed, and the method of fixing the movable iron core 63 and the drive shaft 64 is not limited.
  • the drive shaft 64 is disposed in the internal space of the fixed core 61 via a gap (not shown).
  • the drive shaft 64 vertically moves the internal space of the fixed iron core 61 by energization of the electromagnetic coil 62.
  • the transmission mechanism unit 70 that connects the toggle mechanism unit 50 and the electromagnetic operation mechanism unit 60 includes connection pins 71 and 72 and a connection link 73.
  • the connection pin 71 is stretched around one of the connection holes 74 of the connection link 73 and the connection hole 65 formed at the tip of the drive shaft 64.
  • a connection pin 72 is stretched around the other connection hole 75 of the connection link 73 and a connection hole (not shown) formed in the middle of the lever 55.
  • the tripping mechanism 80 is bridged between the frame 81 fixed to the housing 2 and the frame 81 and one end 55 a of the lever 55, and biases the mover 20 and the moveable contact 21 in the direction to be separated.
  • the movable contact 21 moves from the open state toward the closed state, which is a contact state, the force of the movable contact 21 is increased, and the open electrode spring 82 is provided.
  • a force with which the opening spring 82 biases the movable contact 21 is referred to as a biasing force.
  • the tripping mechanism 80 includes a trip bar 83 rotatably supported by the frame 81, a trip lever 84 rotatably supported by the frame 81 by a shaft 84c provided at one end 84a, and a frame 81. And a reset spring 85 which is stretched around the trip lever 84.
  • the frame 81 is connected to the insulating wall 4 by a fixing member (not shown).
  • the fixing member for fixing the frame 81 to the insulating wall 4 is, for example, a pin, and the frame 81 can be connected to the insulating wall 4 by caulking the pin.
  • the frame 81 faces a part of the toggle mechanism 50 and at least a part of the transmission mechanism 70 when viewed from the extension direction of the axial center 56 which is the axial direction of the connection plate 53, and the part of the toggle mechanism 50 and the transmission At least a part of the mechanism unit 70 is covered.
  • connection pin 86 One end 82 a of the opening spring 82 is held by the connection pin 86.
  • the connecting pin 86 is inserted into a connecting hole (not shown) formed at one end 55 a of the lever 55. Further, the other end 82 b of the opening spring 82 is held by the connection pin 87.
  • the connection pin 87 is inserted into a connection hole (not shown) formed in the frame 81. As a result, the opening spring 82 is in the state of being stretched between the frame 81 and the lever 55.
  • the opening spring 82 has energy when the lever 55 is rotated clockwise about the axis 56 of the shaft 54 in a state where the opening spring 82 is stretched between the frame 81 and the lever 55. It is a tension spring accumulated.
  • the open pole spring 82 applies a force to the lever 55 in the counterclockwise direction about the axis 56.
  • a shaft shaft 83 c extending in the front-rear direction is fixed to the trip bar 83, and the shaft shaft 83 c is rotatably inserted into a not-shown rotation hole provided in the frame 81.
  • the trip bar 83 has a semicircular portion 83a formed in a semicircular shape, and as will be described later, when the circuit breaker 1 is in the closing completion state, the arc portion of the semicircular portion 83a in the trip bar 83 The trip lever 84 is locked by 83b.
  • the trip lever 84 engages with an engagement pin 55c provided on the other end 55b of the lever 55 at an engagement surface 84d provided on the other end 84b side. Further, one end 85a of the reset spring 85 is engaged with a hole 84e provided between the shaft 84c of the trip lever 84 and the engagement surface 84d. The other end 85 b of the reset spring 85 is held by the frame 81 by an engagement pin (not shown). As a result, the reset spring 85 is stretched between the frame 81 and the trip lever 84, and the trip lever 84 is biased clockwise around the shaft 84c by the reset spring 85. However, in the state shown in FIG.
  • the stationary core 61 has an inter-surface distance between the first adsorption surface 61 a for adsorbing the movable core 63 and the movable core 63 and an inter-surface distance between the adsorption surface 61 a and the movable core 63. And a longer second suction surface 61b.
  • the movable core 63 has a first attracted surface 63a facing the first attracting surface 61a and a second attracted surface 63b facing the second attracting surface 61b.
  • the movable contact 21 resists the biasing force of the opening spring 82.
  • a distance B which is a stroke along which the movable core 63 moves to be inserted, has a relationship of A ⁇ B.
  • the inter-plane distance between the second suction surface 61 b and the second attracted surface 63 b is equal to the distance B which is the stroke of the movable iron core 63 moving for insertion. .
  • FIG. 5 is a view showing the circuit breaker 1 in the case where the closing according to the first embodiment is completed.
  • connection plate 53 and the operation arm 51 are arranged close to a straight line before the dead point where the straight line is a straight line.
  • the dead point is a state in which the connection plate 53 and the operation arm 51 are in a straight line, but it can also be said that the mover pin 42, the link pin 52, and the shaft 54 are in a straight line.
  • the mover 20 moves to the right, and the movable contact 21 moves from the open state to the closed state and contacts the fixed contact 13. Then, a contact pressure is applied between the fixed contact 13 and the movable contact 21 by the contact pressure spring 41, and the closing completion state is maintained. In the closing state, the first fixed conductor 10 is electrically connected to the second fixed conductor 11 via the fixed contact 13, the movable contact 21, the mover 20, and the flexible conductor 30.
  • FIG. 6 is a view showing the relationship between the stroke of the movable iron core of the electromagnetic operation mechanism and the load applied to the drive shaft of the electromagnetic operation mechanism from the time of opening to the time of closing according to the first embodiment.
  • the movable core 63 moves in the range from the position shown in FIG. 1 to the insertion completion position shown in FIG.
  • the upward movement of the movable core 63 will be referred to as forward, and the speed at which the movable core 63 is advanced will be referred to as forward speed.
  • forward speed As shown in FIG. 6, when the advancing position of the movable iron core 63 is in the blocking state position from the blocking state position to the contact contact start position, transmission is performed with the fixed contact 13 and the movable contact 21 not in contact. The mechanism unit 70 is driven. Therefore, when the advancing position of the movable iron core 63 is in the blocking position, the load applied to the electromagnetic operation mechanism unit 60 is relatively small.
  • the contact contact start position is a position where the movable contact 21 starts contact with the fixed contact 13.
  • the distance B which is the stroke of the movable iron core 63
  • the distance B corresponds to the first adsorption surface 61 a for adsorbing the movable iron core 63 and the first attracted surface of the movable iron core 63. It is configured to be longer than the inter-plane distance A with 63a. Therefore, when an operation current is supplied to the electromagnetic coil 62 of the electromagnetic operation mechanism 60, as shown in FIG. 6, the initial driving force is larger than when the stroke distance B and the inter-plane distance A are equal. The movable iron core 63 and the drive shaft 64 are accelerated and the forward speed is increased using this initial large driving force.
  • connection plate 53 and the operation arm 51 become close to a straight line, and the toggle mechanism 50 composed of the connection plate 53 and the operation arm 51 approaches the dead point. Therefore, before the moving speeds of the movable iron core 63 and the drive shaft 64 become zero, it is perpendicular to the straight line connecting the shaft center 56 and the link pin 52 in the reaction force from the contact pressure spring 41 acting on the link pin 52 The component of the direction decreases sharply. As a result, the load torque in the counterclockwise direction about the axis 56 starts to decrease. As the load torque decreases, the load on the electromagnetic operation mechanism 60 required to rotate the connection plate 53 and the lever 55 also starts to decrease. For this reason, the driving force of the electromagnetic operation mechanism 60 again exceeds the input load, and the movable iron core 63 and the drive shaft 64 reach the input completion position while accelerating again.
  • the tripping bar 83 When a tripping command is given to the circuit breaker 1, the tripping bar 83 is driven to rotate counterclockwise by an actuator (not shown) provided on the circuit breaker 1.
  • the trip bar 83 rotates counterclockwise, the arc portion 83 b of the trip bar 83 is disengaged from the trip lever 84. Therefore, the trip lever 84 rotates counterclockwise, and the engagement pin 55c is disengaged from the engagement recess 84f.
  • the lever 55 and the connection plate 53 are rotated counterclockwise by the reaction force of the opening spring 82 and the contact pressure spring 41, and the other end 51b of the operation arm 51 is rotated with the rotation of the lever 55 counterclockwise. Move upwards.
  • the circuit breaker 1 moves the first distance B for closing the movable contact 21 to the fixed contact 13 against the biasing force of the opening spring 82 and the contact pressure spring 41. Since the movable iron core 63 and the electromagnetic operation mechanism 60 having the fixed iron core 61 in which the distance A between the first adsorption surface 61a for adsorbing the movable iron core 63 and the movable iron core 63 is shorter than the first distance B is provided. The closing speed of the movable contact 21 is secured while the electromagnetic operating mechanism unit 60 is operated to close the movable contact 21 and the opening spring 82 is used to open the movable contact 21. Therefore, the number of parts constituting the circuit breaker 1 can be reduced, and cost reduction can be achieved. Note that the circuit breaker 1 may be configured without the contact pressure spring 41. Also in this case, since the closing speed of the movable contact 21 is secured, the number of parts constituting the circuit breaker 1 is reduced and thus reduced. Cost can be achieved.
  • the circuit breaker 1 moves the movable iron core 63 moving the first distance B to close the movable contact 21 to the fixed contact 13 against the biasing force of the opening spring 82 and the contact pressure spring 41.
  • the closing operation is performed by the electromagnetic operation mechanism unit 60 having the fixed iron core 61 in which the distance A between the first adsorption surface 61a for adsorbing the movable iron core 63 and the movable iron core 63 is shorter than the first distance B.
  • the driving force of the movable iron core 63 is increased at the time of the closing operation, the loads of the opening spring 82 and the contact pressure spring 41 can be increased, and the interrupting performance can be improved.
  • the closing of the movable contact 21 is completed and the movable iron core 63 stops advancing before the toggle mechanism 50 including the operation arm 51 and the connection plate 53 exceeds the dead point.
  • the configuration of the tripping mechanism 80 can be simplified without exceeding the dead center even when transitioning from the on state to the off state, so downsizing and cost reduction of the circuit breaker 1 can be achieved. it can.
  • the closing of the movable contact 21 is completed and the movable iron core 63 stops advancing before the toggle mechanism 50 including the operation arm 51 and the connection plate 53 exceeds the dead point. Is configured. Therefore, the component in the direction perpendicular to the straight line connecting the shaft center 56 and the link pin 52 in the reaction force from the contact pressure spring 41 acting on the link pin 52 is reduced. As a result, the load received from the contact pressure spring 41 via the transmission mechanism 70 to the electromagnetic operation mechanism 60 is also reduced, and the loading operation can be completed even if the load of the open electrode spring 82 is increased.
  • the closing of the movable contact 21 is completed and the movable iron core 63 stops advancing before the toggle mechanism 50 including the operation arm 51 and the connection plate 53 exceeds the dead point. Is configured. Therefore, the component in the direction perpendicular to the straight line connecting the shaft center 56 and the link pin 52 in the reaction force from the contact pressure spring 41 acting on the link pin 52 is reduced. As a result, the load received by the electromagnetic operation mechanism 60 from the contact pressure spring 41 via the transmission mechanism 70 is also reduced, and the load of the opening spring 82 can be increased. Can improve the shutoff performance.
  • the circuit breaker according to the second embodiment has a configuration in which the electromagnetic operation mechanism unit can further suppress variations in the position of the drive shaft and perform a more stable closing operation.
  • the electromagnetic operation mechanism requires a large force for input, the output of the electromagnetic operation mechanism also increases. Therefore, when the fixed iron core of the electromagnetic operation mechanism unit is formed by laminating a plurality of magnetic plates, the number of laminated magnetic plates in the fixed iron core also increases. When the number of laminated magnetic plates increases, the variation in thickness of the fixed iron core, which is the length of the fixed iron core in the lamination direction of the magnetic plates, increases.
  • the electromagnetic operation mechanism is generally fixed to an insulating housing, and if the variation in thickness of the fixed iron core is large, it is considered that the electromagnetic operation mechanism is attached to the housing in the direction perpendicular to the stacking direction of the magnetic plates.
  • the conventional electromagnetic operation mechanism unit requires a dedicated part or a dedicated structure, which complicates the configuration.
  • the cause of the variation is increased, and the same problem as in the case where the electromagnetic operation mechanism unit is fixed to the housing in the stacking direction of the magnetic plates may occur. So, in the circuit breaker concerning Embodiment 2, the variation in the position of a drive shaft is controlled, and the electromagnetic operation mechanism part is constituted so that stable closing operation can be performed.
  • FIG. 7 is a diagram of a configuration example of a circuit breaker according to a second embodiment.
  • the circuit breaker according to the second embodiment is, for example, an air circuit breaker that opens and closes an electric path in the atmosphere, but can also be applied to a circuit breaker other than the air circuit breaker.
  • coordinates of XYZ axes are attached in the drawings. In the coordinates of the XYZ axes, the positive direction of the Z axis is upward, the negative direction of the Z axis is downward, the positive direction of the X axis is rightward, the negative direction of the X axis is left, and the positive direction of the Y axis is forward And the Y-axis negative direction is the back direction.
  • the circuit breaker 100 includes an insulating casing 102, a first fixed conductor 110 connected to a power supply side conductor (not shown), and a load side conductor (not shown)
  • a movable member 120 having a movable contact 121, and a flexible conductor 130 which electrically connects the second fixed conductor 111 and the movable member 120 and has flexibility.
  • the first fixed conductor 110 is also referred to as a power supply side terminal, and penetrates the wall portion 103 of the housing 102 from the outside of the housing 102 to reach the first space portion 107.
  • One end 110 a of the first fixed conductor 110 protrudes to the outside of the housing 102 and is connected to a power supply side conductor (not shown).
  • the other end 110 b of the first fixed conductor 110 is disposed in the first space 107, and the fixed contact 113 is fixed.
  • the second fixed conductor 111 is also referred to as a load-side terminal, and penetrates the wall portion 103 of the housing 102 from the outside of the housing 102 to reach the first space portion 107 similarly to the first fixed conductor 110. There is. One end 111 a of the second fixed conductor 111 protrudes to the outside of the housing 102 and is connected to a load side conductor (not shown), and the other end 111 b of the second fixed conductor 111 is in the first space 107. Be placed.
  • a movable contact 121 is provided at one end 120 a of the mover 120.
  • One end 130 a of the flexible conductor 130 is fixed to the other end 120 b of the mover 120.
  • the other end 130 b of the flexible conductor 130 is fixed to the other end 111 b of the second fixed conductor 111.
  • the circuit breaker 100 has one end attached to the other end 120 b of the mover 120 and the contact pressure spring 141 to which the other end is attached to the wall 103 of the housing 102 and the mover 120 attached. And a link pin 142.
  • the contact pressure spring 141 urges the mover 120 so that the moveable contact 121 and the fixed contact 113 come close to each other around the link pin 142, and the moveable contact 121 provided on the mover 120 is the fixed contact 113.
  • the circuit breaker 100 includes a toggle mechanism 150 connected to the mover 120 by the link pin 142, an electromagnetic operation mechanism 160 for moving the mover 120 through the toggle mechanism 150, a toggle mechanism 150, and an electromagnetic operation mechanism. And a transmission mechanism unit 170 for connecting the unit 160.
  • the toggle mechanism 150 is disposed across the first space 107 and the second space 108, and the electromagnetic operation mechanism 160 and the transmission mechanism 170 are disposed in the second space 108. .
  • the toggle mechanism 150 has the operation arm 151 whose one end 151a is rotatably connected to the mover 120 by the link pin 142 and the other end 151b of the operation arm 151 so that the one end 152a can be rotatably connected by the link pin 153 And a shaft 154 fixed to a central portion of the connection plate 152 and rotating about an axial center 155.
  • the toggle mechanism 150 is not limited to the above-described configuration.
  • the toggle mechanism unit 150 may be configured such that the mover 120 is connected to the tip end of one rotation member that rotates around the axis 155.
  • the toggle mechanism 150 may be configured to have one or more link members between the operation arm 151 and the connection plate 152.
  • the electromagnetic operation mechanism unit 160 is disposed below the connection plate 152, and is fixed to support portions 105 and 106 that project from the insulating wall 104 of the housing 102 toward the second space portion 108.
  • the drive shaft 165 of the electromagnetic operation mechanism 160 is connected to the other end 152 b of the connection plate 152 via the transmission mechanism 170 at a position spaced apart from the axial center 155 of the shaft 154 in the left direction.
  • the transmission mechanism unit 170 includes connection pins 171 and 172 and a connection link 173.
  • a connection pin 171 is bridged between one connection hole (not shown) formed in the connection link 173 and the connection hole 167 formed in the drive shaft 165.
  • a connection pin 172 is bridged between the other connection hole (not shown) formed in the connection link 173 and the connection hole (not shown) formed in the middle of the connection plate 152.
  • the rotation of the shaft 154 in the direction in which the one end 152a is lowered causes the operation arm 151 to be driven by the connection plate 152 via the link pin 153 so as to be linearly arranged in the length direction of the connection plate 152.
  • the mover 120 moves toward the wall 103 while compressing the contact pressure spring 141, and the movable contact 121 contacts the fixed contact 113.
  • first fixed conductor 110 is electrically connected to second fixed conductor 111 via fixed contact 113, movable contact 121, mover 120, and flexible conductor 130. Be done.
  • the closing of the circuit breaker 100 is completed before the dead point.
  • the dead point is a state in which the connection plate 152 and the operation arm 151 are in a straight line, and the axis 155, the link pin 153, and the link pin 142 may be in a straight line.
  • the circuit breaker 100 includes a tripping mechanism having the same configuration as the tripping mechanism 80 of the circuit breaker 1. Further, at the other end 152 b of the connection plate 152, an engagement pin having the same configuration as the engagement pin 55 c of the circuit breaker 1 is provided.
  • the tripping mechanism portion holds the above-mentioned input state. By releasing the holding of the closing state by the tripping mechanism, each member operates in the opposite direction to the closing operation, and the movable contact 121 is at a position away from the fixed contact 113, and the tripping state shown in FIG. . Note that an unillustrated open electrode spring that constitutes the tripping mechanism of the circuit breaker 100 is bridged between an unshown frame fixed to the housing 102 and one end 152 a of the connecting plate 152.
  • the closing operation from the tripping state to the closing state is performed by the upward movement of the drive shaft 165 of the electromagnetic operation mechanism unit 160.
  • FIG. 8 is an exploded perspective view of the electromagnetic operation mechanism according to the second embodiment
  • FIG. 9 is an external perspective view showing an assembled state of the electromagnetic operation mechanism according to the second embodiment
  • FIG. 10 is a second embodiment.
  • FIG. 11 is a side view of the electromagnetic operation mechanism according to the second embodiment.
  • the coordinates of the XYZ axes are attached so that the state of the electromagnetic operation mechanism unit 160 in FIG. 7 becomes a front view of the electromagnetic operation mechanism unit 160.
  • the electromagnetic operation mechanism 160 includes a stationary core 161, a cylindrical electromagnetic coil 162 fixed to the stationary core 161, and an insulating bobbin 163 on which the electromagnetic coil 162 is wound. , A movable iron core 164 inserted into the inner space of the bobbin 163, a drive shaft 165 connected to the movable iron core 164, and a guide member 166 for guiding the vertical movement of the drive shaft 165.
  • the fixed core 161 has an inner space 168, as shown in FIG. 8, and the electromagnetic coil 162 and the bobbin 163 are disposed in the inner space 168 of the fixed core 161. Further, a connecting hole 167 is formed in one end 165a of the drive shaft 165, and the other end 152b of the drive shaft 165 is connected to the other end 152b of the connecting plate 152 shown in FIG. Be done. The other end 165 b of the drive shaft 165 is fixed to the movable core 164.
  • the electromagnetic operation mechanism 160 includes the surfaces of the first inner wall 161 a and the second inner wall 161 b and the movable iron core 164. The distance between them is shorter than a distance which is a stroke along which the movable core 164 moves.
  • the third inner wall portion 161c and the fourth inner wall portion 161d of the fixed core 161 shown in FIG. 8 abut against the middle portion of the movable core 164 in the detached state shown in FIG. Configured as.
  • the shapes of the third inner wall portion 161 c and the fourth inner wall portion 161 d are not limited to the shapes shown in FIG. 8 and may be any shapes that come into contact with the movable iron core 164 and stand still.
  • the fixed core 161 is formed by laminating a plurality of magnetic plates 190 in the same direction and is formed by a first divided core 181 and a second divided core 182 opposed to each other, and one or more magnetic plates 191 each.
  • a first connecting member 183, a second connecting member 184, a third connecting member 185, and a fourth connecting member 186, which connect the first split iron core 181 and the second split iron core 182, are provided.
  • the plurality of laminated magnetic plates 190 are integrated by caulking, adhesion, or welding.
  • the magnetic plate 190 and the magnetic plate 191 have the same shape, and are formed, for example, by punching a magnetic plate such as silicon steel plate.
  • the magnetic plate 190 is an example of a first magnetic plate
  • the magnetic plate 191 is an example of a second magnetic plate.
  • FIG. 12 is a view showing a configuration example of the magnetic plate according to the second embodiment. Further, in FIG. 12, the upper direction is the Z-axis positive direction, the lower direction is the Z-axis negative direction, and the right direction is the X-axis positive direction.
  • each of the magnetic plates 190 and 191 has an extending portion 192 extending in the vertical direction, a first protrusion 193 protruding rightward from the upper portion of the extending portion 192, and a lower portion of the extending portion 192. And a second protrusion 194 protruding rightward.
  • a plurality of connection holes 195a, 195b, 195c, 195d, and 195e are formed along the vertical direction.
  • a connection hole 195 f is formed at the tip of the first protrusion 193.
  • the connection holes 195a, 195b, 195c, 195d, 195e, and 195f may be described as connection holes 195 if they are not distinguished from one another.
  • connection hole 195e is disposed at a position farther from the connection hole 195a than the connection hole 195d, and the distance L1 between the connection hole 195a and the connection hole 195e is longer than the distance L2 between the connection hole 195a and the connection hole 195d.
  • the end 191 a of the magnetic plate 191 shown in FIG. 12 is used for fixing to the housing 102 as described later.
  • the dimension of the distance L2 since the external size of the electromagnetic operation mechanism 160 changes in accordance with the performance required for the electromagnetic operation mechanism 160, the magnetic plate 190 and the magnetic plate 191 are overlapped in different directions. It can be set arbitrarily according to the external size under the constraint that the connecting holes 195 are aligned when fitting.
  • each of the first connecting member 183, the second connecting member 184, the third connecting member 185 and the fourth connecting member 186 is configured by one magnetic plate 191
  • the magnetic plates 191 may be stacked in the same direction. Further, in the examples shown in FIG. 8, FIG. 9, FIG. 10 and FIG. 11, the first divided core 181 and the second divided core 182 are formed by laminating 19 magnetic plates 190.
  • the number of magnetic plates 190 to be printed may be 18 or less, or 20 or more.
  • first protrusion 193 and the second protrusion 194 of the magnetic plate 190 may be referred to as the first protrusion 193 and the second protrusion 194 of the first core segment 181, and The first protrusion 193 and the second protrusion 194 of 190 may be described as the first protrusion 193 and the second protrusion 194 of the second core segment 182.
  • first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186 may be described as the first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186.
  • the first divided core 181 and the second divided core 182 are arranged in a direction so as to be mirror-symmetrical to each other, and the first protrusion 193 and the second protrusion are assembled. They face each other in the projecting direction of 194.
  • a guide member 166 shown in FIG. 8 is disposed between the first protrusion 193 of the first split core 181 and the first protrusion 193 of the second split core 182.
  • the guide member 166 is provided with a guide hole 169 through which the drive shaft 165 is inserted, and the first protrusion 193 of the first split iron core 181 and the first protrusion 193 of the second split iron core 182 It is held by
  • the first split iron core 181 and the second split iron core 182 are formed by the first connection member 183 and the second connection member 184 on one end side of the magnetic plate 190 in the stacking direction. It connects and it connects with the 3rd connection member 185 and the 4th connection member 186 in the other end side of the lamination direction of magnetic board 190.
  • the connection between the first split iron core 181 and the second split iron core 182 is made by connecting the first connection member 183, the second connection member 184, and the third connection to the first split iron core 181 and the second split iron core 182. It is performed by fixing the member 185 and the 4th connection member 186 by connection bolt 187a, 187b, 187c, 187d, 187e, 187f.
  • FIG. 13 is a method of connecting the first divided core and the second divided core by the first connecting member, the second connecting member, the third connecting member, and the fourth connecting member according to the second embodiment.
  • FIG. 13 For convenience of explanation, in FIG. 13, the electromagnetic coil 162, the bobbin 163, the movable iron core 164, and the drive shaft 165 are not shown.
  • the first split iron core 181 and the second split iron core 182 are arranged such that the first protrusions 193 of each other face each other and the second protrusions 194 face each other. In this state, the first split iron core 181 and the second split iron core 182 are mirror symmetric.
  • first protrusion 193 of the first split iron core 181 and the first protrusion 193 of the second split iron core 182 face each other at an interval, and the second protrusion of the first split iron core 181 194 and the second projecting portion 194 of the second core segment 182 are opposed with an interval.
  • a space surrounded by the first split iron core 181 and the second split iron core 182 is the inner space 168 described above.
  • the drive shaft 165 protrudes out of the stationary core 161 through a gap formed by the first protrusion 193 of the first split core 181 and the first protrusion 193 of the second split core 182.
  • first connecting member 183 and the second connecting member 184 face each other such that the first projecting portions 193 face each other and the second projecting portions 194 face each other.
  • the magnetic plates 190 constituting the two connecting members 184 are oriented in a direction different from the direction of the magnetic plates 190 constituting the first divided iron core 181 and the second divided iron core 182.
  • the first connecting member 183 is directed from the direction of the magnetic plate 190 constituting the first split iron core 181 along the XZ plane which is the laminated surface of the magnetic plate 190 in the direction of overlapping the X axis with the Z axis
  • the second connecting member 184 is rotated by 90 degrees in the direction in which the X axis is superimposed on the Z axis along the XZ plane from the direction of the magnetic plate 190 constituting the second split iron core 182 in a direction rotated by 90 degrees.
  • the third connecting member 185 and the fourth connecting member 186 face each other, and the second projecting portions 194 face each other.
  • the magnetic plates 190 constituting the four connecting members 186 are oriented in a direction different from the direction of the magnetic plates 190 constituting the first divided iron core 181 and the second divided iron core 182.
  • the first connecting member 183 and the second connecting member 184 and the third connecting member 185 and the fourth connecting member 186 are mutually connected via the first split iron core 181 and the second split iron core 182. It is arranged to face each other.
  • the first connection is made on the plate surface of the magnetic plate 190 of the uppermost layer among the plurality of magnetic plates 190 stacked in each of the first split iron core 181 and the second split iron core 182.
  • the plate surfaces of the member 183 and the second connection member 184 overlap.
  • the plate surfaces of the third connecting member 185 and the fourth connecting member 186 overlap the plate surface of the lowermost magnetic plate 190 in each of the first divided core 181 and the second divided core 182. become.
  • connection bolts 187a, 187b, 187c, 187d, 187f and the nuts 188a, 188b, 188c, 188d, 188e, 188f the first divided core 181 and the second divided core 182 and the first divided core
  • the connecting member 183, the second connecting member 184, the third connecting member 185 and the fourth connecting member 186 are fixed.
  • the connection bolt 187a is passed through the connection hole 195a of the first connection member 183, the connection hole 195e of the first split iron core 181, and the connection hole 195a of the third connection member 185, and fixed with a nut 188a.
  • connection bolts 187b, 187c, 187d, 187e and 187f are similarly fastened with nuts 188b, 188c, 188d, 188e and 188f through the corresponding connection holes 195, respectively.
  • the first split iron core 181 and the second split iron core 182 are connected by the first connection member 183, the second connection member 184, the third connection member 185, and the fourth connection member 186.
  • the first connection member 183 and the second connection member 184 can be fixed. Therefore, the number of types of magnetic plates constituting the fixed core 161 can be one, and the number of types of parts constituting the fixed core 161 can be reduced as compared with the case where plural types of magnetic plates are used.
  • connection holes 195a, 195b, 195c, 195d formed in magnetic plate 190 for forming first split iron core 181 and second split iron core 182. , 195e, and 195f are used for fixing the first connection member 183, the second connection member 184, the third connection member 185, and the fourth connection member 186. Also, a plurality of connection holes 195a, 195b, 195c formed in the magnetic plate 191 for constituting the first connection member 183, the second connection member 184, the third connection member 185 and the fourth connection member 186.
  • the connection holes 195a, 195b, 195c, and 195d among the connection parts 195d, 195e, and 195f are used to connect the first split iron core 181 and the second split iron core 182.
  • the first divided core 181 and the second divided core 182 and the first connecting member 183, the second connecting member 184, the third connecting member 185 and the fourth connecting member 186 connect holes 195a.
  • the number of connection holes 195 formed in the magnetic plates 190 and 191 can be suppressed, and the reduction in strength of the magnetic plates 190 and 191 can be suppressed.
  • the magnetic plates 190 and 191 described above have six connection holes 195a, 195b, 195c, 195d, 195e and 195f, the number of connection holes 195 is not limited to six.
  • the first connecting member 183, the second connecting member 184, the third connecting member 185 and the fourth connecting member 186 are, as shown in FIG. 9, the first split iron core 181 and the second split iron core 182. At least the end portions 183a, 184a, 185a, and 186a project outward of the first divided core 181 and the second divided core 182 in the X-axis negative direction orthogonal to the stacking direction of the magnetic plate 190, and the end 183a, Connection holes 195 e are disposed at 184 a, 185 a and 186 a.
  • the end portions 183a, 184a, 185a and 186a are the end portions 191a of the magnetic plate 191 shown in FIG.
  • the electromagnetic operation mechanism 160 has a first divided iron core 181 and a second divided iron core 181 by connection holes 195a and 195d having a distance between them shorter than the distance L1 between the connection holes 195a and 195e in the magnetic plate 191.
  • the split cores 182 are connected. Therefore, the end portions 183a, 184a, 185a, and 186a can be protruded in the X axis negative direction with respect to the first split iron core 181 and the second split iron core 182.
  • a connecting hole 195 e formed in the magnetic plate 190 which respectively configures the first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186 is the insulating wall 104 of the housing 102.
  • the support portion 105 projecting toward the second space portion 108 side, and is used to fix the electromagnetic operation mechanism portion 160 to the support portion 106.
  • the variation in the distance L3 between the central axis O1 of the drive shaft 165 and the connection hole 195e of the magnetic plate 191 does not depend on the thickness of the first split iron core 181 and the second split iron core 182. Variations in the position of the central axis O1 of the shaft 165 can be suppressed. Hereinafter, this point will be specifically described.
  • FIG. 14 is a view showing a state in which the electromagnetic operation mechanism is fixed to the support portion protruding from the partition wall of the casing according to the second embodiment.
  • the support portions 105 and 106 are, for example, ribs protruding from the insulating wall 104, but may be metal members attached to the insulating wall 104 such as an L-shaped metal fitting fixed to the insulating wall 104.
  • the mounting screw 196 is screwed into the screw hole formed in the support portion 105 through the connection hole 195 e of the first connection member 183, whereby the first connection member 183 is the housing 102. It is fixed to Further, the second connection member 184 is fixed to the housing 102 by screwing the mounting screw 197 into the screw hole formed in the support portion 106 through the connection hole 195 e of the second connection member 184.
  • the plate surface of the magnetic plate 191 constituting the first connecting member 183 and the second connecting member 184 that is, the surface in the stacking direction of the magnetic plate 191 is a fixing region fixed to the supporting portions 105 and 106. It fixes to the support part 105,106 as an attachment surface to 105,106.
  • a mounting screw (not shown) is screwed into a screw hole formed in a rib (not shown) via the connection hole 195e of the third connection member 185, and the third connection member 185 is fixed to the housing 102.
  • a mounting screw (not shown) is screwed into a screw hole formed in a rib (not shown) via the connection hole 195 e of the fourth connection member 186, and the fourth connection member 186 is fixed to the housing 102.
  • the first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186 are attached to the ribs. Only a part of the member 184, the third connecting member 185, and the fourth connecting member 186 may be attached to the rib.
  • the variation of the distance L4 between the central axis O1 of the drive shaft 165 and the insulating wall 104 is an outline of the first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186. It becomes settled by the dispersion
  • the electromagnetic operation mechanism unit 160 can be fixed with less As a result, the positional relationship of the other components coupled to the drive shaft 165 is stabilized, and a stable closing operation can be performed.
  • the electromagnetic operation mechanism unit 160 can be fixed to the housing 102, a member for fixing the electromagnetic operation mechanism unit 160 to the housing 102 is not newly required. Therefore, the number of parts in the circuit breaker 100 can be reduced.
  • 195 e can be used to fix the housing 102. Therefore, the number of connection holes 195 formed in the magnetic plates 190 and 191 can be suppressed, and the strength reduction of the magnetic plates 190 and 191 can be suppressed.
  • the circuit breaker 100 includes the first fixed conductor 110, which is an example of the fixed conductor having the fixed contact 113, the mover 120 having the movable contact 121, and the drive shaft 165. And move the mover 120 along with the movement of the drive shaft 165 and the electromagnetic operation mechanism unit 160 for moving the drive shaft 165 linearly, and the toggle mechanism unit for contacting and separating the fixed contact 113 and the movable contact 121 And a case 102 covering the electromagnetic operation mechanism unit 160 and the toggle mechanism unit 150.
  • the electromagnetic operation mechanism unit 160 is fixed to the fixed iron core 161, the movable iron core 164 provided movably with respect to the fixed iron core 161, and the fixed iron core 161, and generates a magnetic flux to generate an electromagnetic coil 162 for moving the movable iron core 164. And a drive shaft 165 connected to the movable core 164.
  • the fixed core 161 is formed by laminating a plurality of magnetic plates 190, which is an example of a first magnetic plate, and is formed of a plurality of magnetic plates 190.
  • a member 186 is provided.
  • Each of the first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186 has the same shape as the magnetic plate 190 and has a different direction from the magnetic plate 190.
  • the magnetic board 191 which is an example of the 2nd magnetic board which connects the 1st division
  • FIG. The magnetic plate 191 that constitutes at least one of the first connecting member 183, the second connecting member 184, the third connecting member 185, and the fourth connecting member 186 has a stacking direction of the plurality of magnetic plates 190.
  • a fixing region which protrudes outward of at least one of the first split iron core 181 and the second split iron core 182 in the direction orthogonal to the second split iron core and is fixed to the support portions 105 and 106 provided in the housing 102. Have.
  • the variation of the position of the central axis O1 of the drive shaft 165 is the variation of the outer shape of the first connecting member 183, the second connecting member 184, the third connecting member 185 and the fourth connecting member 186, and the connection hole 195e. Determined by the variation in position. Therefore, even when the size of the electromagnetic operation mechanism unit 160 is increased, the number of stacked magnetic plates 190 that constitute each of the first split iron core 181 and the second split iron core 182 is not affected. Therefore, compared with the case where the first split iron core 181 and the second split iron core 182 are fixed in the stacking direction of the magnetic plate 190, the electromagnetic operation mechanism unit 160 with less variation in the position of the central axis O1 of the drive shaft 165. Can be fixed.
  • the positional relationship of the other components coupled to the drive shaft 165 is stabilized, and a stable closing operation can be performed.
  • the magnetic plates 190 and 191 which comprise the fixed iron core 161 are the same shape, the kind of components which comprise the fixed iron core 161 can be reduced.
  • the magnetic plate 191 is fixed to the support portions 105 and 106 with the surface of the end portion 191 a in the stacking direction of the magnetic plate 190 as the attachment surface to the support portion 105 and the support portion 106.
  • the magnetic plate 191 can be fixed to the support portions 105 and 106 by surface contact, and the attachment of the electromagnetic operation mechanism portion 160 to the housing 102 can be stably performed.
  • a fixing area fixed to the support part 105 and the support part 106 it may replace with the surface of the edge part 191a, and may use the side surface of the edge part 191a.
  • the moving direction of the movable iron core 164 is a direction orthogonal to the stacking direction of the magnetic plates 190.
  • the magnetic plate 191 has an end to the outside of at least one of the first divided iron core 181 and the second divided iron core 182 in the direction orthogonal to the stacking direction of the magnetic plate 190 and the moving direction of the movable iron core 164. 191a protrudes. Therefore, the length of fixed iron core 161 in the moving direction of movable iron core 164 can be suppressed, and the length of electromagnetic operation mechanism 160 excluding drive shaft 165 can be suppressed in the moving direction of movable iron core 164.
  • connection holes 195a, 195b, 195c, 195d, 195e and 195f are formed in the magnetic plate 190 and the magnetic plate 191, and the plurality of connection holes 195a, 195b, 195c, 195d, 195e and 195f are formed.
  • a connecting hole 195e is formed at the end 191a.
  • connection hole 195 of the plurality of connection holes 195a, 195b, 195c, 195d, 195e, 195f is connected to the magnetic plate 191 of the first split iron core 181 and the second split iron core 182 to the magnetic plate 190; , And selectively used for fixing the magnetic plate 191 to the support portion 105 and the support portion 106.
  • the number of connection holes 195 formed in the magnetic plates 190 and 191 can be suppressed, and a reduction in strength of the magnetic plates 190 and 191 can be suppressed.
  • first connecting member 183, the second connecting member 184, the third connecting member 185 and the fourth connecting member 186 is protruded in the direction orthogonal to the central axis O1 of the drive shaft 165.
  • first connecting member, the second connecting member, the third connecting member, and the fourth connecting member are used.
  • the second embodiment differs from the second embodiment in that a part thereof is protruded in the direction along the central axis O1 of the drive shaft and fixed to the support of the housing.
  • FIG. 15 is a view showing a configuration example of a magnetic plate constituting the fixed core of the electromagnetic operation mechanism according to the third embodiment
  • FIG. 16 is a plan view of the electromagnetic operation mechanism according to the third embodiment .
  • the upper direction is the Z-axis positive direction
  • the lower direction is the Z-axis negative direction
  • the right direction is the X-axis positive direction.
  • the electromagnetic operation mechanism unit 260 uses magnetic plates 290 and 291 having a shape different from that of the magnetic plates 190 and 191 according to the second embodiment. As shown in FIG. 15, the magnetic plates 290 and 291 have the same shape as each other as the magnetic plates 190 and 191.
  • the magnetic plates 290 and 291 have an extending portion 292 extending in the vertical direction, a first projecting portion 293 projecting rightward from the upper portion of the extending portion 292, and a second projecting rightward from the lower portion of the extending portion 292. And a projecting portion 294.
  • connection holes 298a, 298b, 298c, 298d, 298e, 298f are formed in the extending portion 292, and a connection hole 298g is formed in the first projecting portion 293.
  • the connection holes 298a, 298b, 298c, 298d, 298e, 298f, 298g may be described as connection holes 298 if they are not distinguished from one another.
  • the fixed core 261 includes a first divided core 281 and a second divided core 282, a first connecting member 283, a second connecting member 284, a third connecting member 285 and a fourth connecting member 283.
  • the first split iron core 281 and the second split iron core 282 by the connection bolts 287a, 287b, 287c, 287d, 287f, and the first connection member 283, the second connection member.
  • the second connecting member 285 and the fourth connecting member 286 are fixed.
  • the first divided core 281 and the second divided core 282 are constituted by the magnetic plate 290, and the first connecting member 283, the second connecting member 284, the third connecting member 285 and the fourth connecting member 286 are , And a magnetic plate 291.
  • the third connecting member 285 and the fourth connecting member 286 are hidden by the first connecting member 283 and the second connecting member 284 and are not shown.
  • connection holes 298 a, 298 e and 298 g of the connection holes 298 a 298 b 298 c 298 d 298 f 298 g of the magnetic plate 290 are the first connection member 283 and the second connection member 284. , And the third connecting member 285 and the fourth connecting member 286. Further, among the plurality of connection holes 298a, 298b, 298c, 298d, 298e, 298g formed in the magnetic plate 291, the connection holes 298b, 298c, 298d, 298f are divided into a first divided core 281 and a second divided core. It is used for connection with the iron core 282. Although the magnetic plates 290 and 291 have seven connection holes 298, as in the case of the magnetic plates 190 and 191, the number of connection holes 298 is not limited to the number shown in FIG.
  • the first connecting member 283 and the second connecting member 284 are vertical directions that are orthogonal to the stacking direction of the magnetic plates 290 in the first divided core 281 and the second divided core 282. At least the end portions 283 b and 284 b protrude outward beyond the first split iron core 281 and the second split iron core 282. Further, although not shown, the end portions of the third connecting member 285 and the fourth connecting member 286 also project outward of the first divided core 281 and the second divided core 282 in the vertical direction.
  • the end portions 283b and 284b are end portions 291b of the magnetic plate 291 shown in FIG.
  • connection holes 298 a and 298 e formed in the magnetic plate 290 constituting each of the first connection member 283, the second connection member 284, the third connection member 285, and the fourth connection member 286 are insulated from the housing 202. It is used to fix the electromagnetic operation mechanism 260 to the supports 205 and 206 which project from the wall 204.
  • FIG. 17 is a view showing a state in which the electromagnetic operation mechanism is fixed to the support portion protruding from the partition wall of the casing according to the third embodiment.
  • the mounting screw 296 is screwed into the screw hole formed in the support portion 205 through the connection hole 298 e of the first connection member 283, whereby the first connection member 283 is in the housing 202. It is fixed to In addition, the second connection member 284 is fixed to the housing 202 by screwing the mounting screw 297 into the screw hole formed in the support portion 206 via the connection hole 298 e of the second connection member 284.
  • the third connecting member 285 and the fourth connecting member 286 are similarly fixed to the support portions 205 and 206 by unillustrated attachment screws.
  • the plate surface of the magnetic plate 291 constituting the first connecting member 283, the second connecting member 284, the third connecting member 285 and the fourth connecting member 286, that is, the surface in the stacking direction of the magnetic plate 291 is a support It fixes to the support part 205,206 as an attachment surface to 205,206.
  • the variation of the distance L5 between the central axis O1 of the drive shaft 265 and the insulating wall 204 is an outline of the first connecting member 283, the second connecting member 284, the third connecting member 285 and the fourth connecting member 286. It becomes settled by the dispersion
  • FIG. 18 is a plan view of an electromagnetic operation mechanism unit of another configuration according to the third embodiment.
  • the second connecting member 284 and the fourth connecting member 286 are divided into first parts so that the second connecting member 284 and the fourth connecting member 286 do not protrude upward or downward.
  • the iron core 281 and the second split iron core 282 may be fixed. Note that, in FIG. 18, the fourth connection member 286 is hidden by the second connection member 284 and is not shown.
  • the electromagnetic operation mechanism unit 260 includes one of the first connection member 283, the second connection member 284, the third connection member 285, and the fourth connection member 286.
  • the end 291a of the magnetic plate 291 constituting the first divided core 281 and the second divided in a direction orthogonal to the stacking direction of the plurality of magnetic plates 290 in the first divided core 281 and the second divided core 282 At least one of the iron cores 282 protrudes outward, and has a fixing area fixed to the support portions 205 and 206 provided on the housing 202.
  • the projecting direction of the end portion 291b of the magnetic plate 291 is the moving direction of the movable core 264.
  • the length of fixed iron core 261 can be suppressed in the width direction which is a direction orthogonal to the moving direction of movable iron core 264 and the stacking direction of magnetic plates 290, and the length of electromagnetic operation mechanism 260 in the width direction. Can be reduced.
  • the protruding end portions 291a and 291b of the magnetic plates 291 and 291 are fixed to the support portions 205 and 206.
  • a part of the magnetic plates 291 and 291 protruding is the support portion
  • the end portions 291a and 291b may be fixed to the support portions 205 and 206, and the present invention is not limited to the example in which the end portions 291a and 291b are fixed to the support portions 205 and 206.
  • the closing operation is performed by the electromagnetic operation mechanism units 160 and 260
  • the tripping operation and maintenance of the tripping state It can be configured to do at least one.
  • additional electromagnetic coils for moving the drive shafts 165 and 265 downward are fixed to the fixed iron cores 161 and 261, and excitation current is supplied to the additional electromagnetic coils.
  • the configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un disjoncteur comprenant un contact d'interruption pour l'établissement et l'interruption d'un circuit électrique, un ressort à contact ouvert, un mécanisme à bascule et un mécanisme d'actionnement électromagnétique. Le ressort à contact ouvert sollicite le contact d'interruption dans la direction d'ouverture. Lorsque le contact d'interruption passe de l'état ouvert à l'état fermé, une force de sollicitation qui sollicite le contact d'interruption dans la direction d'ouverture augmente. Le mécanisme à bascule fait passer le contact d'interruption de l'état ouvert à l'état fermé. Le mécanisme d'actionnement électromagnétique comprend : un noyau mobile (63) se déplaçant contre la force de sollicitation pour amener ainsi le mécanisme à bascule à faire passer le contact d'interruption de l'état ouvert à l'état fermé; et un noyau fixe (61) qui a une première surface d'attraction (61a) pour attirer le noyau mobile (63) avec une distance inter-surface (A) entre la première surface d'attraction (61a) et le noyau mobile (63) qui est plus courte qu'une distance de déplacement (B) du noyau mobile (63).
PCT/JP2018/001286 2017-08-21 2018-01-17 Disjoncteur WO2019038946A1 (fr)

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CN201880052996.7A CN111052288B (zh) 2017-08-21 2018-01-17 断路器
TW107122090A TWI670741B (zh) 2017-08-21 2018-06-27 斷路器

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PCT/JP2017/029816 WO2019038813A1 (fr) 2017-08-21 2017-08-21 Dispositif d'actionnement électromagnétique et disjoncteur
JPPCT/JP2017/029816 2017-08-21
JP2017216279A JP6922673B2 (ja) 2017-11-09 2017-11-09 遮断器
JP2017-216279 2017-11-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112017921A (zh) * 2019-05-28 2020-12-01 雷民主 新型断路器合闸分闸操作机构
JPWO2020230684A1 (ja) * 2019-05-16 2021-11-18 三菱電機株式会社 過電流引外し装置およびこれを用いた回路遮断器
JP7499684B2 (ja) 2020-11-20 2024-06-14 三菱電機株式会社 電磁アクチュエータおよび遮断器

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