TWI594283B - Electromagnetically operated switchgear - Google Patents

Description

Electromagnetic operated switchgear

The present invention relates to an electromagnetically operated switching device, and more particularly to an electromagnetically operated switching device suitable for switching a switch such as a vacuum circuit breaker by an electromagnetic force of an electromagnetic operating device.

One type of vacuum circuit breaker that is an electromagnetically operated switching device has a situation in which it is necessary to exchange vacuum valves due to specification changes or maintenance.

However, the insulator injection molding cut-off portion constituting the vacuum valve is a shaft portion that is connected to the operator that operates the insulator injection molding blocking portion when the vacuum valve is exchanged, and the exchange operation is hindered. : The hand does not reach the bolt that injects the insulation into the forming blocking portion for fixing.

For this reason, in order to exchange the vacuum valve, it is necessary to disassemble the shaft portion that hinders the exchange operation, but the shaft portion is fixed to the operator. To disassemble the shaft portion, it is necessary to disassemble the operator to which the shaft portion is fixed.

In addition, the operator is usually covered by the housing, so in the case of disassembling the operator, it is necessary to dismantle the housing covering the operator. Unloading.

Therefore, when the vacuum valve is exchanged, it is necessary to disassemble the shaft portion, the operator, and the housing, which requires a lot of time.

As a fixing means for solving such a problem, there is a patent document 1 described.

In Patent Document 1, it is shown that the bottom portion of the insulator injection molding cutoff portion and the casing covering the operator are bolted to each other via the intermediate fixing plate, so that the insulator can be injected by unfastening the bolt and injecting the insulator. The forming cutout is detached from the housing.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Chinese New Publication No. 202678204

However, the configuration in which the insulator injection molding blocking portion and the casing are bolted via the intermediate fixing plate described in Patent Document 1 is formed by bolting to the bottom of the insulator injection molding blocking portion. The hole in the middle of the portion is fixed by a fixing bolt through a hole formed in the intermediate fixing plate, and the hole formed in the bolt fixing portion is only in the middle, and the fixing bolt does not penetrate the bolt fixing portion. Therefore, there is a problem in that stress occurs. At the time of the occurrence of breakage in the bolt fixing portion due to the difference in the elastic modulus, there is a lack of reliability.

The present invention is the creator of the above circumstances, as its first The object of the present invention is to provide an electromagnetically operated switching device which can easily inject an insulator into a forming interrupting portion even if a structure for bolting the insulating injection molding forming portion and the casing via the intermediate fixing plate is provided. Needless to say, disassembly, the reliability of the fixing can also be improved.

Further, a second object of the present invention is to provide An electromagnetic operation type switching device is capable of easily injecting an insulator into a forming blocking portion for disassembly even if a structure for bolting the insulating injection molding forming portion and the casing via the intermediate fixing plate is performed, of course, The rigidity of the contact surface of the insulating injection into the forming blocking portion and the intermediate fixing plate can be increased.

In order to achieve the above first object, the electromagnetic operation type switching device of the present invention includes an operator and a vacuum circuit breaker having a movable iron core and a fixed iron core disposed opposite to each other and the movable iron according to an electromagnetic force a coil that is separated or in contact with the fixed iron core and covered by the casing, and is formed by an electromagnet disposed at a central portion of the casing, the vacuum circuit breaker being electromagnetically generated by the electromagnet of the operator The driving force generated by the force separates or contacts the movable electrode disposed opposite to the fixed electrode through a link mechanism formed by the driving rod, the cross rod, and the insulating rod, and has an insulation formed by integrally molding the insulator. In the object injection molding blocking portion, the insulator injection molding blocking portion and the casing are fixed by fixing bolts via an intermediate fixing plate, and the electromagnetic operation type switching device is characterized by: A bolt fixing hole is formed in the intermediate fixing plate, and a bolt fixing portion is provided so as to cover the lower portion of the insulator injection molding blocking portion, and a hole similar to the bolt fixing hole is formed in the bolt fixing portion, and The fixing bolt penetrates the hole of the bolt fixing portion through the bolt fixing hole of the intermediate fixing plate.

In addition, the electromagnetic operation type switching device of the present invention is In order to achieve the above second object, there is provided an operator and a vacuum circuit breaker having a movable iron core and a fixed iron core disposed opposite to each other, and the movable iron core and the fixed iron core are separated or contacted by electromagnetic force. The coil is covered by the casing and is formed by an electromagnet disposed at a central portion of the casing. The vacuum breaker is driven by the driving force generated by the electromagnetic force generated by the electromagnet of the operator. a link mechanism formed by a rod, a cross bar, and an insulating rod separates or contacts the movable electrode and the fixed electrode disposed opposite to each other, and has an insulator injection forming blocking portion integrally formed by an insulator, and the insulator The injection molding blocking portion and the housing are fixed by fixing bolts via an intermediate fixing plate, and the electromagnetic operation type switching device is characterized by: a contact side end portion and/or an operator side end portion of the intermediate fixing plate , the system is bent upwards or downwards.

According to the present invention, it is possible to provide an electromagnetically operated switching device which can easily inject an insulator into a forming blocking portion even if a structure for bolting the insulating injection molding forming portion and the casing via the intermediate fixing plate is provided. Needless to say, disassembly, the reliability of the fixing can also be improved.

Further, it is possible to obtain an electromagnetically operated switching device which can easily inject the insulator into the forming blocking portion for disassembly. Needless to say, it is also possible to increase the rigidity of the contact surface between the insulating injection molding and the intermediate fixing plate.

10‧‧‧shell

11‧‧‧Electromagnetic operating device

12‧‧‧ openings

14‧‧‧Electromagnet

16‧‧‧ capacitor

18‧‧‧Control substrate

20‧‧‧ spacers

22‧‧‧Second plug

28‧‧‧Signal cable

32‧‧‧Vacuum circuit breaker

34‧‧‧Auxiliary contacts

36‧‧‧ display panel

38‧‧‧ counter

48‧‧‧ coil

48a‧‧‧ coil holder

50‧‧‧Lighting diode

52‧‧‧"Connect" button switch

54‧‧‧"Disconnect" button switch

56, 171‧‧‧ tablet

58‧‧‧ movable iron core

60‧‧‧Fixed core

62, 88, 98‧‧‧ axes

64, 66‧‧‧ movable plate

68‧‧‧ permanent magnet

70, 72‧‧‧ cover

74, 76, 90, 174‧‧‧ support plates

78‧‧‧Fixed rod

80‧‧‧ lower plate

82, 84‧‧‧through holes

94, 102, 136, 144 ‧ ‧ sales

92‧‧‧Shutter spring

96, 100, 186, 193‧‧ ‧ crossbar

114‧‧‧Insulation rod

121‧‧‧Flexible conductor

122‧‧‧ movable feeder conductor

124‧‧‧ movable conductor

124A‧‧‧ movable electrode

125‧‧‧Fixed conductor

125A‧‧‧Fixed electrode

126‧‧‧Insulation cylinder

129‧‧‧Fixed feeder conductor

130‧‧‧Upper contacts

132‧‧‧ lower contact

170‧‧‧Operator

172‧‧‧ Ribs

173‧‧‧ bolt

190‧‧‧ Shock absorbers

191‧‧‧stop

192‧‧‧Spherical adapter

194‧‧‧ nuts

195‧‧‧Sheet

197‧‧‧Intermediate fixing plate

216, 217, 218, 219, 220, 221, 254‧‧ ‧ bolt fixing

228, 229, 230‧‧‧Insert injection molding

250‧‧‧Operator Department

260‧‧‧ fixing bolts

261‧‧‧Operator side fixing bolts

272‧‧‧breaking part

300‧‧‧Bolt through hole

301‧‧‧Bolt fixing hole

302‧‧‧Operating shaft through hole

400‧‧‧breaker side end

401‧‧‧Operator side end

Fig. 1 is a front elevational view showing a first embodiment of the electromagnetically operated switching device of the present invention.

Fig. 2 is a plan view showing the electromagnetic operation type switching device of the present invention shown in Fig. 1.

Fig. 3 is a right side view showing the electromagnetic operation type switching device of the present invention shown in Fig. 1.

Fig. 4 is a right side view showing an auxiliary contact, a display panel, and a counter of the electromagnetic operation type switching device of the present invention shown in Fig. 1.

FIG. 5 is a view as seen from the direction of arrow 270 of FIG. 4.

Fig. 6 is a cross-sectional view taken along line A-A' of Fig. 4.

7(a)] is a cross-sectional view showing a fixing structure of an intermediate fixing plate using a fixing bolt of a conventional bolt fixing portion.

Fig. 7 (b) is a cross-sectional view showing a fixing structure of an intermediate fixing plate to which a fixing bolt of a bolt fixing portion of the present invention is applied.

Fig. 8 is a right side view showing a second embodiment of the electromagnetically operated switching device of the present invention.

9 is a diagram showing Embodiment 3 of an electromagnetic operation type switching device of the present invention. Right side view.

Hereinafter, the electromagnetic operation type switching device of the present invention will be described based on the illustrated embodiment. In the respective embodiments, the same reference numerals are used for the same members.

[Example 1]

1 to 4 show a first embodiment of the electromagnetically operated switching device of the present invention.

As shown in the figure, the electromagnetic operation type switching device of the present embodiment is roughly configured to include an electromagnetic operation device (operator) 11 and a vacuum circuit breaker 32, and the electromagnetic operation device 11 is formed by an electromagnet 14. The vacuum circuit breaker 32 transmits a driving force by an electromagnetic force generated by the electromagnet 14 through a link mechanism formed by a driving rod, a cross bar, and an insulating rod, and has an insulation formed by integrally molding the insulator. In the object injection molding blocking portion 228, the insulator injection molding blocking portion 228 and the casing 10 are fixed by fixing bolts via the intermediate fixing plate 197. The details regarding this are explained below.

The electromagnetic operating device 11, as shown in Figs. 1 to 3, has a casing 10 formed in a box shape, and the casing 10 has an opening 12 on the front side and a front side on the front side of the casing 10. The cover (not shown) is fixed to be detachable.

In the center of the housing 10, the electromagnet 14 is in the middle. Each of the cores is independently provided with a capacitor 16 on one side and a control board 18 on the other side. The electromagnet 14 is fixed to the casing 10 via bolts and nuts via ribs 172, and the capacitor 16 and the control board 18 are respectively fixed. On the opposite side of the side of the housing 10. That is, when the capacitor 16 is viewed from the current direction of the paper surface of FIG. 1, the belt (not shown) is fixed to the left side surface of the casing 10 by bolts and nuts, and the control board 18 is bolted via the spacer 20. And a nut is fixed to the right side surface of the housing 10.

Furthermore, in the housing 10, as shown in Figure 4, in the capacitor The upper portion of the device 16 is mounted on the flat plate 171 fixed to the casing 10, and accommodates the auxiliary contact 34 for sending the switch state of the vacuum circuit breaker 32 to the outside, the display panel 36 for displaying the switch state, and the number of switching operations. Count counter 38.

The 22-series secondary plug is fixed by a structure that is hung on the upper side of the casing 10. The secondary plug 22 is connected to a power supply cable, a signal cable 28 from a digital relay or an analog relay, and the like. The signal cable 28 is connected to the auxiliary contact 34 and the control substrate 18 inside the casing 10.

The control board 18 is actually equipped with a control logic unit, a charge and discharge circuit, a relay and a relay contact, etc., and the control logic unit receives power supply from the secondary plug 22, and receives reception from a digital relay or an analog relay. The command or the disconnection command (interruption command) performs a logic operation for controlling the driving of the electromagnet 14, which is provided for charging and discharging the capacitor 16, and the relay and the relay contact are provided for The direction of energization of the coil 48 is controlled.

In addition, in the control substrate 18, the actual installation is for electricity. The light-emitting diode 50 is instructed to indicate that the charging of the container 16 has ended, and the button switch 52 for "on" for indicating the turning-on of the vacuum circuit breaker 32 by manual operation is actually installed, and the manual switch is provided. In response to the operation, the vacuum circuit breaker 32 outputs an "off" button switch 54 for an open command (interrupt command).

Next, the electromagnet 14 will be described. As shown in Figure 3, The electromagnet 14 is composed of a movable iron core 58, a fixed iron core 60, a coil 48, a shaft 62, two movable flat plates 64 and 66, a permanent magnet 68, a cover body 70 and 72 made of a tubular iron, and iron. The support plate 76 and the fixed rod 78 are configured, and the coil 48 is housed in a bobbin 48a disposed between the support plate 74 and the support plate 76.

Further, in the central portion of the electromagnet 14, the bobbin 62 is disposed In the vertical direction, the upper side of the shaft 62 is inserted into the through hole 82 of the flat plate 56, and the lower side is inserted into the through hole 84 of the support plate 76 and the support plate 174. Thereby, the shaft 62 is freely movable and slidable.

On the outer peripheral surface of the shaft 62, the movable iron core 58 and the movable flat are The plates 64 and 66 are fixed to the shaft 62 by a nut, and a shaft (drive rod) 88 is coupled to a lower side of the shaft 62 via a pin (not shown). The movable plate 64 and 66 having two sizes are attached to the shaft 62 (the movable plate 66 on the lower side is large, and the movable plate 64 on the upper side is small). The purpose is to reduce the mass of the movable portion while ensuring the required magnetic flux density. To reduce the energy required for the action.

Furthermore, the support plate 90 is coupled to the lower side of the shaft 62, Between the support plate 90 and the lower plate 80, an annular blocking spring 92 that draws a circle centered on the axis of the shaft 62 is attached (one end of the lower plate 80 to which the blocking spring 92 is fitted). The blocking spring 92 transmits the elastic force for separating the movable iron core 58 from the fixed iron core 60 to the shaft 62 through the support plate 90.

In addition, around the movable iron core 58, it is attached to the movable plate A permanent magnet 68 is disposed on the lower side of the 66, and the permanent magnet 68 is fixed to the upper side of the support plate 74. The fixed iron core 60 is fixed to the support plate 76 by bolts.

In the lower plate 80, the opposite plate is attached to the lower plate 80 On the opposite side of the capacitor 16 of the magnet 14, a shock absorber 190 supported by the lower plate 80 and a stopper 191 are provided. The stopper 191 is disposed closer to the shaft 98 than the shock absorber 190. The shock absorber 190 is fixed between the lower plate 80 and the nut 194, and the nut 194 is rotated to adjust the height.

In addition, the stopper 191 is between the lower plate 80 and the lower plate 80 The sheet 195 is inserted and fixed to vary the thickness of the inserted sheet 195 so that the height of the stopper 191 can be adjusted.

In the shock absorber 190, the electromagnet 14 in the height direction On the opposite side, a spherical ball adapter 192 is provided, and the shaft 98 is provided with a crossbar 193 supported to rotate relative to the shaft 98 with the shaft 98 as a rotating shaft, and the crossbar 193 is attached to the vacuum circuit breaker. When the 32 is disconnected, it contacts both the spherical adapter 192 and the stopper 191. The upper surface of the crossbar 193 is formed to be grounded with respect to the vacuum interrupter 32 when disconnected. Become parallel. The shock absorber 190 and the stopper 191 are disposed on the opposite side (on the side of the control substrate 18) of the capacitor 16 with respect to the electromagnet 14.

That is, in the present embodiment, the lower plate 80 is also Any one of the role of suppressing the blocking spring, the role of supporting the shock absorber 190, and the role of the support stopper 191 by fixing the blocking spring 92. In addition, the central axis of the shock absorber 190 and the central axis of the electromagnet 14 are aligned in the inward direction of the paper surface of FIG. 3, the distance between the axis 98 extending inward of the paper surface and the central axis of the shock absorber 190, the shaft 98 and the electromagnet The distances of the central axes of 14 are equal (in the same distance).

Therefore, the shock absorber is contacted via the spherical adapter 192. The crossbar 193 of the 190 and the crossbar 96 coupled to the electromagnet 14 can have the same shape, whereby the type of the member can be reduced, and the member can be easily manufactured. Further, the electromagnet 14 is fixed to the vacuum breaker 32 side of the casing 10 via the bolt 173.

Furthermore, on the lower side of the shaft 88, the pin 94 is further transmitted. And connected to a pair of crossbars 96. The crossbar 96 is configured to be a member of a link mechanism that converts the direction of transmission of the driving force by the electromagnetic force generated by the electromagnet 14, and is supported to be rotatable relative to the shaft 98. The shaft 98 is formed such that the crossbar 96 further coupled to the crossbar 100 is also supported to be rotatable relative to the shaft 98, and the crossbar 96 is rotated such that the crossbar 100 is rotated by the rotation of the shaft 98.

In addition, as shown in FIG. 4, the operation of the display panel 36 is performed. The rod 170 is coupled to a crossbar 186 that is supported for rotation relative to the shaft 98. The crossbar 186 extends across the crossbar 96 when viewed from the shaft 98 The opposite side. The crossbar 100 described above is coupled to the insulating rod 114 via the pin 102.

Further, as shown in FIG. 3, inside the insulating rod 114, A wiping mechanism (not shown) for applying a contact pressure is attached, and the upper side of the insulating rod 114 is connected to the movable feeder conductor 122 provided in the horizontal direction through the flexible flexible conductor 121, and is connected to the vacuum. The movable conductor 124 of the circuit breaker 32. The movable conductor 124 is connected to the movable electrode 124A, and the fixed electrode 125A is disposed to face the movable electrode 124A. The fixed electrode 125A is coupled to the fixed conductor 125. These are housed in the insulating cylinder 126 constituting the vacuum circuit breaker 32 together with the movable electrode 124A, and the vacuum circuit breaker 32 is kept in a vacuum.

Further, the fixed conductor 125 is connected to the fixed conductor The fixed feeder conductor 129 in the horizontal direction is connected to the contact portion 130 on the fixed contact conductor 129, and the contact 132 is connected to the movable contact conductor 122. The contact 130 and the lower contact 132 are connected to the conductor of the switchboard.

In addition, the fixed feeder conductor 129 and the movable feeder conductor 122 is a vacuum breaker 32 that is isolated in the height direction and disposed in the height direction (longitudinal direction) to electrically connect the two.

Then, the movable electrode inside the vacuum circuit breaker 32 The 124A contacts the fixed electrode 125A such that the current is turned on, and the fixed feeder conductor 129 is electrically connected to the movable feeder conductor 122. On the other hand, the movable electrode 124A is disconnected from the fixed electrode 125A, so that the fixed feeder conductor 129 and the movable feeder conductor 122 are disconnected.

In addition, in this embodiment, as shown in FIG. 2, combination 3 Capacitors 16 ensure a given capacitance. The electric power accumulated by the three capacitors 16 is energized to the coil 48 to generate a magnetic field, thereby achieving an ON or OFF operation. The direction in which the electric power accumulated by the capacitor 16 is supplied to the coil 48 is controlled by the control board 18.

By adopting such a configuration, it is ensured by one capacitor In the case of a predetermined capacitance, the occupied area is large, but the height of the capacitor 16 can be reduced, so that the space above the wide capacitor 16 can be ensured, and the maintainability can be improved. Further, it is self-evident that the number of the capacitors 16 is not limited to three.

As shown in FIG. 1 and FIG. 4, the auxiliary contact 34 and the display panel 36 are shown. The counter 38 is disposed as a state detecting means of the vacuum valve 32, and is disposed on the side of the electromagnet 14 and is disposed on the upper portion of the capacitor 16 to be fixed to the flat plate 171.

As shown in FIG. 4, the operating lever 170 is connected to the crossbar 186. The opposite side of the side is connected to the display panel 36 via the pin 136. The operating lever 170 rotates together with the shaft 98, so that it becomes possible to specify the state (on or off) of the vacuum breaker 32 in accordance with the position of the operating lever 170. The display panel 36 is connected to the operating lever 170 via the pin 144. Therefore, the display panel 36 also operates in accordance with the state of the vacuum breaker 32, and the state of the vacuum breaker 32 at the moment can be indicated based on the operating position.

The display panel 36 is as follows: connected to the counter 38, The number of operations of the movable electrode 124A of the vacuum circuit breaker 32 = the number of operations of the operating lever 170 = the number of operations of the display panel 36, The number of operations of the movable electrode 124A of the vacuum circuit breaker 32 is counted based on the number of operations of the display panel 36. In the display panel 36, a pin 144 is provided between the auxiliary contact 34 and the auxiliary contact 34.

Next, for the intermediate fixing plate which is the feature of the embodiment The configuration of 197 and the periphery will be described with reference to FIGS. 4, 5, and 6.

As shown in FIG. 6, the intermediate fixing plate 197 is formed with: a screw The bolt fixing hole 301, the operation shaft passing hole 302, and the bolt passing hole 300. The bolt fixing hole 301 is located on the upper contact 130 side in the intermediate fixing plate 197, and the fixing injection bolt 260 to be described later passes through the bolt fixing hole 301, and the insulator injection molding blocking portion 228 is fixed by the intermediate fixing plate 197. In the housing 10.

That is, as shown in FIG. 5, the 3-phase insulator is injected into the mask. The broken portions 228, 229, and 230 are integrally fixed to the intermediate fixing plate 197, and are provided with a bolt fixing portion 216 made of an insulator so as to cover the periphery of the lower portion of the insulating injection molding forming portions 228, 229, and 230. 217, 218, 219, 220, 221, wherein the bolt fixing portions 216, 217, 218, 219, 220, 221 also have holes as the bolt fixing holes 301, so that the fixing bolts 260 pass through the bolt fixing holes 301 of the intermediate fixing plate 197. Further, the inside of each of the holes of the bolt fixing portions 216, 217, 218, 219, 220, and 221 is passed through, so that the insulator injection molding blocking portions 228, 229, and 230 are fixed. In addition, there are a total of six fixing bolts 260.

In addition, the bolt passes through the hole 300 and is placed in the insulator to be injected into The operating mechanism portion 250 side of the shaped blocking portions 228, 229, and 230, and becomes When the holes of the fixing bolts 260 are larger than the fixing bolts 260, the fixing bolts 260 are only passed through and are not fixed. Further, the operation shaft passage holes 302 provided in the insulator injection molding blocking portions 228, 229, and 230 are provided with holes through which the operation shaft that transmits the drive from the operation mechanism portion 250 is passed.

Fig. 7(a) shows a conventional fixing bolt portion, and Fig. 6(b) shows one bolt fixing portion 254 of the fixing bolt portion of the present embodiment.

As shown in Fig. 7 (a), in the conventional fixing bolt portion, the fixing bolt 260 does not penetrate the bolt fixing portion 254, so that the breaking portion 272 is generated in the bolt fixing portion 254 due to the difference in the elastic modulus at the time of stress occurrence. However, in the structure of the embodiment shown in Fig. 7(b), the fixing bolt 260 penetrates the bolt fixing portion 254, so that the breaking portion 272 does not occur due to the difference in the elastic modulus when the stress occurs, so A bolt fixing portion 254 that reduces the influence of stress can be obtained.

Next, a method of disassembling the insulator injection molding blocking portion 230 will be described with reference to FIGS. 4 and 5 .

First, the fixing bolt 260 to which the intermediate fixing plate 197 is fixed is detached, and one bolt which fixes the intermediate fixing plate 197 in the same direction from the inner side of FIG. Thereafter, the insulator is injected into the forming blocking portion 230, and lifted from the contact surface of the intermediate fixing plate 197 at right angles. Thereby, the insulator injection molding blocking portion 230 can be detached without disassembling the operator portion side fixing bolt 261 and the inner bolt. Further, the insulator injection molding shims 228 and 229 which are arranged side by side in the depth direction can also be detached in the same manner.

By adopting the constitution of such a embodiment, even for

The insulator injection molding blocking portions 228, 229, and 230 are bolted to the casing 10 via the intermediate fixing plate 197, and the insulator can be easily injected into the molding blocking portions 228, 229, and 230 for disassembly. Further, the reliability of the bolt fixing for the insulator injection molding shims 228, 229, and 230 and the casing 10 via the intermediate fixing plate 197 can be improved.

[Example 2]

In Fig. 8, a second embodiment of the electromagnetically operated switching device of the present invention is illustrated.

As shown in Fig. 8, in the present embodiment, the insulator is injected into the contact side end portion 400 of the intermediate fixing plate 197 of the forming blocking portion 228, and is bent at a right angle with respect to the contact surface of the casing 10. (It can also be bent upwards). The other constitution is as in the first embodiment.

According to the configuration of the present embodiment, the same effects as those of the first embodiment can be obtained. Needless to say, the contact side end portion 400 of the intermediate fixing plate 197 of the insulator injection molding portion 228 is bent to be insulated. The rigidity of the contact surface of the object injection molding blocking portion 228 and the intermediate fixing plate 197 is increased.

[Example 3]

In Fig. 9, a third embodiment of the electromagnetically operated switching device of the present invention is illustrated.

In the embodiment 2 shown in Fig. 8, only the intermediate fixing is performed. The contact-side end portion 400 of the plate 197 is bent at a right angle downward with respect to the contact surface of the casing 10, but in the present embodiment, for example, the following is taken, except for the configuration of the embodiment 2, As shown in FIG. 9, the operator-side end portion 401 of the intermediate fixing plate 197 is bent at an upper right angle with respect to the contact surface with the casing 10 (it may be bent downward). The other constitution is as in the first embodiment.

According to the constitution of the embodiment as described above, it can be obtained and implemented. In the same manner as in the case of the second embodiment, the insulator-side end portion 401 of the intermediate fixing plate 197 is bent at a right angle toward the upper side with respect to the contact surface of the casing 10, and the insulator is injected into the forming blocking portion 228 and the middle. The rigidity of the contact surface of the fixing plate 197 is further increased.

The above embodiments 2 and 3 are constructed in addition to the embodiment 1. Although the configuration of the other components is described, the structure in which the insulator injection molding portion and the casing are bolted via the intermediate fixing plate is conventionally constructed, and the configurations of the second and third embodiments are added thereto. It is still possible to achieve the effect of improving the rigidity of the contact surface between the insulator injection molding and the intermediate fixing plate.

In addition, the present invention is not limited to the above embodiments. Contains a wide variety of variations. For example, the above-described embodiments are described in detail to explain the present invention in an easy-to-understand manner, and are not limited to those having all of the components described. Further, a part of the configuration of the embodiment may be replaced with a configuration of another embodiment, and a configuration of another embodiment may be added to the configuration of a certain embodiment. Further, addition, deletion, and replacement of other components may be made for a part of the configuration of each embodiment.

10‧‧‧shell

11‧‧‧Electromagnetic operating device

32‧‧‧Vacuum circuit breaker

48‧‧‧ coil

48a‧‧‧ coil holder

56‧‧‧ tablet

58‧‧‧ movable iron core

60‧‧‧Fixed core

62, 88, 98‧‧‧ axes

64, 66‧‧‧ movable plate

68‧‧‧ permanent magnet

70, 72‧‧‧ cover

74, 76, 90, 174‧‧‧ support plates

80‧‧‧ lower plate

82, 84‧‧‧through holes

94, 102‧‧ ‧ sales

92‧‧‧Shutter spring

96, 100, 193‧‧ ‧ crossbar

114‧‧‧Insulation rod

121‧‧‧Flexible conductor

122‧‧‧ movable feeder conductor

124‧‧‧ movable conductor

124A‧‧‧ movable electrode

125‧‧‧Fixed conductor

125A‧‧‧Fixed electrode

126‧‧‧Insulation cylinder

129‧‧‧Fixed feeder conductor

130‧‧‧Upper contacts

132‧‧‧ lower contact

173‧‧‧ bolt

190‧‧‧ Shock absorbers

191‧‧‧stop

192‧‧‧Spherical adapter

194‧‧‧ nuts

195‧‧‧Sheet

197‧‧‧Intermediate fixing plate

228‧‧‧Insulation Injection Forming Partition

Claims (4)

An electromagnetic operation type switching device comprising an operator and a vacuum circuit breaker, wherein the operator has a movable iron core and a fixed iron core disposed opposite to each other, and the movable iron core is separated or contacted with the fixed iron core by electromagnetic force The coil is covered by the casing and is formed by an electromagnet disposed at a central portion of the casing. The vacuum breaker is driven by the driving force generated by the electromagnetic force generated by the electromagnet of the operator. a link mechanism formed by a rod, a cross bar, and an insulating rod separates or contacts the movable electrode and the fixed electrode disposed opposite to each other, and has an insulator injection forming blocking portion integrally formed by an insulator, and the insulator The injection molding blocking portion and the housing are fixed by fixing bolts via an intermediate fixing plate, and the electromagnetic operation type switching device is characterized by: a contact side end portion and/or an operator side end portion of the intermediate fixing plate , the system is bent upwards or downwards. The electromagnetic operation type switch device according to claim 1, wherein the intermediate fixing plate is formed with a bolt fixing hole, and at the same time, a bolt fixing portion is provided so as to cover the lower portion of the insulating injection injection molding blocking portion. A hole similar to the bolt fixing hole is formed in the bolt fixing portion, and the fixing bolt passes through the bolt fixing hole of the intermediate fixing plate to penetrate the hole of the bolt fixing portion. The electromagnetic operation type switching device according to claim 1 or 2, wherein the bending direction of the intermediate fixing plate is at the front end side of the contact side The operator side ends are opposite to each other. The electromagnetic operation type switching device according to claim 1, wherein the intermediate fixing plate is fixed to the three-phase insulator injection molding blocking portion.