JPS6030029A - Remote control type circuit breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Discussion] This invention relates to a remote controlled circuit interrupter.

[Background technology]

The conventional Jinnotane remote control circuit breaker had an on/off holding function in the contact opening/closing mechanism. For this reason, the holding machine f! The electromagnet needed enough capacity to remove the breaker, making it difficult to downsize the circuit breaker and reduce the operating power of the electromagnet.

[Purpose of the invention]

Therefore, an object of the present invention is to provide a remote control type circuit breaker that can reduce the size of the breaker and reduce the operating power of the electromagnet.

[Disclosure of the invention]

This invention provides a bistable electromagnet in the opening/closing mechanism that is turned on and off by a handle and trips 14N'# by a flow detection means. The key is to maintain the on and off states in a stable position. Therefore, the conventional holding @W is no longer required, and the capacity to remove the holding mechanism is no longer required, so even if the electromagnet is bistable, the overall size can be reduced, and the operating power can be further reduced. can.

A first embodiment of the invention is shown in FIGS. 1 to 22. First, let me explain the structure of one pole. This is a 30 ampere frame type that detects line overcurrent and short circuit current and trips the line. It also turns on and off the line by handle and remote control operation signals. , it is possible to perform a reset operation.

The outer shell (breaker main body) A is mainly composed of the main body case 1. Middle case 2. Side case 3. An inner case 2 consisting of an upper cover 4 and having a top plate 11a and a standing plate 11b that almost block the opening locations in the lateral and upward directions of the main case 1.
is covered, and the side case 3 is placed on the outer surface of the middle case 2 to connect the connecting holes 5 to 30 of the main case 1 and the side case 30.
The inner case 2 is held together by an eyelet pin 8 through which the inner case 2 is held. The upper cover 4 is made of elastic plastic and has a mounting wall 9 stepped at the upper end of the main case 1 and side case 3. By attaching the terminal cover 12 to both end edges of the top plate 11a of the IO and the middle case 2, extending the terminal cover 12 outward from both ends, and forming the base part with a thin wall (12a), A hinge portion 13 is formed that can be elastically rotated in the direction. By combining in this way, a flat box-shaped outer shell A is constructed, and the shoulders on both sides of the outer shell A in the width direction are dropped to the tabers 14, and the both sides of the outer shell A have step-like stepped constructions. 5 to 18 are formed by the main case 1 and the inner case 2, and the main case 1 has a mounting n19 formed at the lower end of the outer shell A for attaching the interrupter to a distribution board or the like.

The terminals are mainly the main terminals 20°21 for electrical circuits as shown in Figure 7.
, an operation terminal 22 for remote control operation signals and an auxiliary terminal 2
3, the main terminals 20 and 21 are power supply side terminal devices (21
) and a load side terminal device (20). These terminal devices mainly consist of terminal boards 24, 25,
Washer with presser projection 26. Tin ring washer 27. A square nut 28 and a terminal screw 29 are used as component parts, and a screw through hole 30 is formed in the terminal plates 24 and 25, respectively, and the terminal screw 2
9 through the washer 27 and the washer 261&:, the terminal screw 29 is passed through the screw through hole 30, and screwed into the NAND 28 on the lower surface. Each terminal plate 24.25Vi has one side edge bent downward to form a hanging piece 31.32, and each terminal device 20.21Fi has a lower stepped portion 15.1 on both sides of the outer shell A.
6. Therefore, these steps 15. )6
The screw/nut loose insertion groove 33 and the vertical F piece insertion slot 34 open on the upper surface and the lateral side tIJI of the main body case 1.
．． 35t-formation. Each terminal device i! 20.21 from the opening side of the main body case 1 as shown in FIG.
6, the hanging pieces 3'', 32 are passed through the slits 34, 35, the terminal screws 292 and the nuts 28 are passed through the grooves 33, and the inner case 2 and side case 3 are closed. To Yui Isao? JE, IIIJ (not shown) with washer 2
6 and the terminal plate 24.25, and connect the terminal 72 with the 292
Try tightening the terminal screw 29 with force.

In addition, the operation terminal 22 has a terminal screw 37 inserted into the upper piece of the square-shaped terminal frame 3G, and is smaller in shape than the previous He terminal device. Completely absent, the insulating partition plate 38 of the upper step 18 formed in the inner case 2 of the step 16 where the power supply side terminal device 21 is located
The trap is installed in a separated location. That is, the first step part 18
A fixing slit 39 is formed in the slit 39, the three terminal frames 34 are inserted into the slit 39, and the terminal frames 34 are clamped and fixed to the step portion 18 by the spring action of the i-child frame 36. Further, the auxiliary terminal 23 is provided on the upper step portion 17 on the load side terminal device 20 side. This auxiliary terminal 23 is for transmitting detection signals of on/off and tripping operations of the circuit breaker to an external alarm lamp or buzzer. This is the screw 4 attached to the lower piece of the Z-shaped terminal board 40.
1 is screwed in, and is installed on the threshold of the insulating partition plate 42 of the stepped portion 17 of the middle case 2, and is held by inserting the upper piece 40a into the holding groove 17a. The terminal cover 12 is located on the upper surface of the operating terminal 22 and the auxiliary terminal 23, and when the interrupter is installed on a distribution board or the like and the upper surface is covered with a 7 lash plate, the lattice plate and Terminal 22.2
3 insulation can be ensured. Note that the connections to these terminals 22 and 23 are performed by opening the terminal cover 12 upward.

Assuming that the 'IIL path between the main terminals 20 and 21 is 16-, the contact portion 43. The Granger type electromagnet device 44 and the bimetal 45 are arranged in a straight line between the main terminals 20 and 21. The contact portion 43I'i controls the opening and closing of the electric circuit, and is composed of a movable contact 48 having a rotating contact 46 and a movable contact 47. Position the contact portion 43 on the bottom plate 49 of the main body case.
A partition plate 50 having a height of about the same height as a 4-inch scoop is erected in the center of the main body case 1.
Viewed from the first mouth, the left side is the arc extinguishing silkworm 51, the right side is the operating electromagnet storage chamber 52, and the fixed contact plate 53 is formed into an inverted U shape along the surface of the partition plate 500. Push it in from the lateral opening side of the main body case 1 while being guided by the partition plate 50, and touch the back end of the width plate 54 provided at the end on the storage plan 52 side to the central part of the main body case 1 when viewed from the lateral opening side. are positioned in contact with each other. The fixed contact 46 is connected to the fixed contact plate 53.
It is fixed to the arc extinguisher 51 fill. Furthermore, a slit 55 is formed in the lower part of the housing 52 between the width plate 54 of the main body case 1 and the vertical F piece 32 of the terminal plate 25, and an MA56 or a conductive plate is inserted into the slit 55 using copper. As shown in FIG. 7, the width plate 54 and the hanging piece 32 are connected by welding. EiJ movable contactor 48 as shown in FIG. 12, movable contact plate 57. Contact frame 58. Contact pressure applying spring 59
and 5f moving contact 47, the movable contact plate 57 and contact frame 58 are pivotally connected at the upper part by a pin 60, and the contact plate 57 and contact frame 58 are connected above the pin 60 as shown in FIGS. 7 and 11. A contact pressure applying spring 59 is installed in a compressed state between the upper ends of the contact pressure applying spring 59 . The lower end 61 of the contact frame 58 is caused by this spring 59.
The intermediate portion of the contact plate 57 comes into elastic contact with the contact plate 57, resulting in a stable state. iJ
The movable contact 47 is fixed to the lower end of the movable contact plate 57, and a pothole 62 for forced contact opening is formed above it. This movable contactor 48 has a bottle 63 passed through a support hole 61a above the pothole 62 at the lower end of the contact frame 58.
It is pivotally supported by a latch link 64, which will be described later, so that the movable contact 47 faces the fixed contact 46 as shown in FIG.

The Granger type electromagnet device 44 detects a short m current, and consists of a yoke 65, a coil 66, a coil tube 67, and a fixed iron core 68 as shown in FIG.

The components include a return spring 69, a granger 70, and a movable rod 71. First, the yoke 65 consists of a U-shaped frame 72 and a stop plate 73, and the stop plate 73 has a protrusion 76 and a square hole 7 between an upper piece 74 and a lower piece 75 on the opposite side of the vertical piece 72a of the U-shaped frame 72.
It is installed and fixed by fitting and caulking in step 7. This yoke 65
is integrally formed with a mechanism section 7817) 7L/-m 79 to be described later, one side plate 80 of the frame 79 is raised above one side edge of the upper piece 74, and the upper piece 74 and the standing piece 72a are A protrusion 81 is formed on the other side of the opposite side plate 8 of the frame 79.
Insert the 20 square hole 83, tighten and tighten the opposing 1+ll & 82
are erected to face one side plate 80. Also, our board 7
The arc traveling plate 84 is bent and extended from the T end of 3, and placed KM below the lower piece 75 of the U-shaped frame 72, and the plate 8
5 is interposed. And this frame 79 is the yoke 6
The lower piece 75 of 5 is provided on the main body case 1 1aK
The lower surface of the support base 1a is placed so that the two-foot traveling plate 84 is positioned so as to sandwich the support base 1a, and two pins 87 and 88 constituting a mechanism section 78, which will be described later, are connected to the main body case 1. These pins 87 and 88 are installed between the support holes 89 and 90 of the middle case 2, and are passed through the holes 91 and 92 of the seven frames 79 to hold the frame 79. The yoke 65 and the 7-frame 79 are positioned by contacting the side plate 82 (FIG. 9). The fixed core 68 has a through hole 68a, and is fitted from the inside into a hole 93 formed by the vertical piece 72a of the U-shaped frame 72 and fixed by caulking. It is slidably inserted into the The coil tube 67 has a small diameter portion 94 at one end, and the small diameter portion 94 is fitted into a mounting hole 95 formed in the backing plate 73, and the other end is fitted into the mft fixed iron core 68 for erection. The 7" langeer 70 is slidably fitted into the coil tube 67, and a forced opening rod 96 protruding from one end of the 7" langeer 70 is inserted into the coil tube 67.
It protrudes outward from the small diameter part 94 of No. 7, and has a collar 97 at its tip.
is formed and passes through the large diameter side of the pothole 62 of the movable contact plate 57 facing the fixed contact 46 and is located on the small diameter side thereof (FIG. 7).

The return spring 69 is compressed and installed between the fixed iron core 68 and the plunger 7o. Since the coil 66 has a large wire cross-sectional area, C
・The hole of the coil 66 is exposed to the coil tube 67, and one end thereof is folded back in the axial direction and connected to the vertical 1ζ piece 31 of the terminal plate 24 of the load side terminal device 20. has been done. With this configuration, in this electromagnet device 44, the operation of the jigranger 70 is limited by the spring force of the return spring 69 when only the rated current or overcurrent flows through the coil 66, but when the short circuit current is 31f, the operation of the jigranger 70 is limited. The magnetic flux between the iron core 68 and the granger 70 increases, and the force of the return spring 69 is overcome, and the granger 70 is attracted to the fixed iron core 68, causing the granger 7
0 works. This causes the movable rod 71 to move
0 and protrudes outward from the vertical piece 72a of the square-shaped frame 72, and the forced opening bar 96 is engaged with the small diameter side of the pothole 62 to pull the movable contact plate 57 towards it. do.

The bimetal 45 detects overcurrent, and its main body is made of two thin plates with different coefficients of thermal expansion that are superimposed together.As shown in FIGS. 7 and 11, it has a horizontal piece 98 and a diagonal piece 99. Bend it into an abbreviated shape, and screw the gap adjustment screw 100 into the upper end of the diagonal piece 99.

A caulking hole (not shown) is formed in the horizontal piece 98 and caulked to the lower end of the side plate 82 of the frame 79 (welding may also be possible). Flexible part stranded wire 101
Connected by welding.

Then, the side plate 82 of the frame 79 and the upper end of the 5J movable contact plate 57 are welded and connected using 8102 from rounded copper.
When a current flows between the copper p-wire 101 and the coil 66, it is heated by its own Zeal heat, and the high expansion side is connected to the terminal device (2).
Since the diagonal piece 99 is located on the 0) side, the terminal device 1li20
Curve away from. The curved operation is set to operate with an overcurrent several times the rated current.

From the above configuration, the electric circuit is connected to the power supply side terminal device (starting from 21-pin, connecting copper wire 56, fixed contact & 53° fixed contact 4)
6. Movable contact 47, oJ'Q contact plate 57゜Copper Yog@
102, y-1/-m79) side plate 82. Bimetal 45. Copper! 1llO] and is connected to the load side terminal device (20) via the coil 66. Opening and closing are controlled by the contact portion 43. Further, the arc extinguishing chamber 51 is designed to extinguish the arc generated in the contact portion 43 when a short circuit is interrupted by quickly separating it from between the contacts 46 and 47. An exhaust port 103 is formed in the lower part of (20), and a shear arc traveling plate 104 is continuously extended from below the fixed contact 46 of the fixed contact plate 53 and laid along the partition plate 50 and the bottom plate 49 of the arc extinguishing chamber 51. , which faces the upper arc running plate 84, and the exhaust port ]03
A de-ion grid 105e is arranged between the arc traveling plates 84 and 104 on the inside of the de-ion grid 105.
An exhaust plate 106 with many holes formed on the back side of the main body case 1 and the inner case 2 are protected from the arc on both sides between the deion grid 105 and the fixed contact plate 53. Arc-extinguishing side plate 1 that forms the return path of
07 is provided. However, on the center line of the arc traveling plate 104, a single rib 108 for the blade is provided from the fixed contact 46 to the deion grid 05 to facilitate arc traveling and avoid sticking. The operation of the arc extinguishing device is such that when an arc occurs between the contacts 46 and 47 due to the opening of the contacts 46 and 47 in the event of a short circuit, the current path including the arc is routed between the fixed contact plate 53 and the fixed contacts 46 and 47. Arc, Mu” moving contact 47. Since the movable contact plate 57 forms a U-shape,
An electromagnetic driving force is generated that drives the arc toward the grid 105. As a result, the arc leaves the contacts 46 and 47 and travels through the arc running plates 84 and 104, and when it approaches the deion grid 105, it is attracted and enters the deaion grid 105, where it is divided and cooled by the deaion grid 05. The arc is extinguished, and the gas passes through the entire exhaust plate 106 and is exhausted from the exhaust port 03. In this way, the short circuit is cut off at high speed.

The mechanism section 78 that turns on, off, trips, and resets the movable contact 43 is a trisuge link 109, as shown in FIGS. 11 and 12. Ranchi/ri64. Operation link 110. Handle 111 and operating electromagnet device 1
It consists of 12 parts. Trip link] 09 is the 12th
As shown in the figure, the side pieces 114 are integrally connected at the middle part of the vertical pieces 113 and the vertical pieces 113, and the side pieces 1 and 5 are formed on the side opposite to the side openings 4 of the standing pieces 3. 4 and the ear piece 115, a shaft hole]16 is formed in the frame 79 with the pin 87.
One piece 80, 82O is passed through the hole 9 at the side end of the bimetal 45, and both ends are pivotally supported in the support hole 89 formed in the main body cooper and the middle case 2. The lower end of the vertical piece 113 is located in front of the J: 71 of the Granger type IT magnet device 44 in Figure 7, and the upper end is located in front of the gear knob adjustment screw 100 of the bimetal 45.

In addition, the side piece 114 has a diagonally upwardly rising 9, a downward hook part 9 on the slanted upper edge side of its upper end, and an arcuate surface 12 on the upper edge.
It is formed to 0. This trisogelink 1o9Qhin8
7. Torsion coil spring for return] 21 is supported with low elongation j'
L, its one end] 21a is locked to the diagonal lower edge of the side piece 1]4, and the other end 12Jb is abutted and locked to the upper piece 74 of the yoke 65 to form a trinog link] 09tl-Fig. The tgI movement is biased in the direction of the counterclockwise AT hand, so that the lower end of the vertical piece 13 can come into contact with the movable extension 71 and lock onto the protruding surface of the fixed iron core 68. The latte link 64 is a pair of IIIB long side pieces 122
, 123 facing each other and connected to the left edge of the upper end (Fig. 1X12) by a latch bridging piece 124, and the side pieces 122,
The bottle 88 is passed through the hole 125 in the middle part of the frame 79, and the bottle 88 is inserted into the movable contact 48 of the side piece 80.82 of the frame 79.
It passes through the side hole 92 and is further pivoted to the support hole 90 of the main body case 1 and the middle case 2 at both ends r. A return torsion coil spring 27 is supported on the bin 88, one end of which 27a is engaged with the upper piece 74 of the yoke 65, and the other end 12
7b is engaged with the lower edge of the side piece 122° 123, and its spring action urges the slide link 64 to rotate in the clockwise direction in FIG. The upper edge can be fastened more easily. The J: end of this two-way link 64 intersects with the upper end of the trip link 09, and the lower end of the bridging piece 124, the latte part 128, is the trip link.
It is located above the hook portion 119 of No. 09 in the rotating direction.

Therefore, the latch link 64 is connected to the screw coil spring 127.
When the trip link 109 is rotated to the left against the spring force, the launch part 128 slides on the inner arc surface 120 of the trip link 109, and the launch part 109 is rotated to the right against the spring force. 128 is engaged with the hook part 9. From this point K, the trisegment link 109 and the latch link 64 are reset, and the posture of the trisuge link ]09 becomes the detection position of the bimetal adjustment screw ]00 by the vertical piece 113 and the movable rod 71. And Trisogelink 10
9 is operated, the launch link 64 is released and released, and becomes a tri-knob state. The pin 63 supporting the movable contact 43 is inserted into the hole 29 at the lower end of the launch link 64.
be supported. Note that an opposing plate 126 is provided above the contact plate 53 opposite to the caulking protrusion 76b of the lower piece 75 of the yoke 65.
is formed integrally with the main body case 1, and a contact plate 57 is provided between the two.
are hanging down, and the distance between them is the maximum distance that allows the contact plate 57 to rotate.

This prevents the arc from moving upward.

... The headboard is made of an insulating material, and is located slightly to the right of the center of the top plate 11a of the middle coupe 2 as shown in Figure 11.
The handle formed in the handle hole 130b is inserted into the handle fi 30a and the handle fi 130b of the upper cover 4.
Main body case 1 and middle cooper 2 are connected by shaft 131 at the bottom of
It is rotatably supported between the holes 131a. This handle 111 has operation unevenness 111a formed on both sides of the portion protruding from the upper cover 4 in the rotational direction, and an arc plate-shaped ON display plate]]]b (on the surface of the handle 111). ON
”) and JF display board 111c (rOF on the surface
A connecting hole 33 (Fig. 13) is formed at the lower end of the handle 311 with the shaft 3 in between, and the position of the shaft 131 is approximately 100 mm to the right as shown in Fig. 7. An arm 134 extends horizontally, and a granger connecting hole 35 (FIG. 13) is formed in the arm 134. ξ Then, no.7
When the handle 111 is in the ON position as shown in FIG. 14, the word "ON" on the ON display plate 111b can be read through the handle hole 130b, and when the handle 111 is in the OFF position as shown in FIG. ] From 30b, the characters "0FFJ" on the off display board 111C can be read, allowing you to confirm whether it is on or off.The operation link 110 is an H-shaped flat plate bent in the same direction.
137 outside the m path, one end of both side pieces 136 is connected to the connecting hole 133 (connected by a pivot pin 138, and the other end is a pivot pin 6 that supports the movable contact plate 57 and the contact frame 58).
Connected to 0 and 2L. The posture of the handle 111 in Fig. 14 (
The right side state) is in the on state, and by moving the right side in this way, the operation link 110 is pushed and the movable contact 48
is pressed, and since the launch link 64 is latched to the tri-lag link 109, the oJ movable contact 48 rotates around the bin 63 as a fulcrum, and the iiJ@contact 47 contacts the fixed contact 46. When the handle 111 is further pushed to the home position, the movable contact 47 is in contact with the fixed contact 46, so the movable contact plate 57 rotates around the pin 60 as a fulcrum, thereby applying contact pressure. Since the spring 59 is compressed, contact pressure is applied.

In this way, the contact portion 43 is closed, resulting in an off state, but this state is maintained by an operating electromagnet device jL112, which will be described later. Also, the movable contact 48 rotates around the pivot pin 63 of the launch link 64 as a fulcrum, and the 15th control handle 111 is in the off state (left side). Link 10 is pulled and 21 The upper end of the movable contact 48 is pulled by the operating link 110, so the 5I working contact 47 separates from the fixed contact 46 and opens.

In addition, this off operation resets the launch link 64 after the trimming operation. That is, the trip-free state Ml latch link 64 is the trip-free state Ml latch link 10
9 and rotates about the shear pin 126 by the spring 127, the launch link 64 is rotated as shown in FIGS.
The state shown in Fig. 7 is obtained, but when the handle 11 is moved to the left to the normal position flt, the movable contact 48 is pulled up as a whole toward the handle 11 in order to pull the operation link 1]0, and the latte link 64 is moved to the bin 126 Spring on the fulcrum 127
The ratte part 128 slides on the arcuate surface 120 of the tri-lag link 09 and is engaged with the hook part 119.

The trip display device 139 displays a trip knob display when a trip knob operation is performed due to an abnormal current.
Display link 139a and interlocking link 139 as shown in the figure
Consists of b. [Display link] The lower end of the display 39a is supported by the handle shaft 131, and the upper end is an arc plate-shaped trisogen display plate 139C (rTRIPJ is displayed on the surface). I:
It is set up. The interlocking link 139b has both ends bent in the same direction to form an axis, and the display link 139a and the latte link 6
It is connected to the upper end of 4. This trip display device 1
39, when the launch link 64 is in the reset state as shown in FIGS. 14 and 815, the handle is set in the retracted position from the off position of [1], but #! As shown in FIGS. 16 and 17, when the latch link 64 is in the triangular state, the launch link ( ) 4 rotates in the cutting direction, causing the interlocking link 139b to rotate and the front link 139a to rotate. Display board] 39 [is located so as to cover the top surface of the on display board 111b of Huff Dollar January (when operating the tri-knob, the handle IN is in the OFF position at '7R).

As a result, when looking at the handlebar length J3fJbyj, the characters 139 L/, J1-TRIPJ can be read on the trisogage display board 139, and the 9 display "rON" is hidden.

Operation power (+d stone equipment U month 2) Figures 111 to 14
As shown in the figure, the 5IC grunge 140 is protruded and inserted into the storage door 52 in the -C upright position with respect to the bottom plate 49 of the 1c (main body case with j#J at the top), and the upper end of the plunger 140 is U-shaped. The electromagnet device 11 is connected to the link jar connecting hole 135 of the handle 111 via the pin 14].
Reference numeral 2 is a bistable polarized housing, and as shown in FIG.
, 146, and a pair of inner yokes 148 are placed on the left and right sides of the coil frame 143.
a and the lower piece 148b, and both side edges of the yoke 148 are engaged between the flanges 145 and 146, and the inner yoke 148
A pair of permanent magnets 149 magnetized in the plate thickness direction are attracted to the outer surface of the (magnetic poles are indicated by N and S), and further permanent magnets 149
A pair of outer yokes 150 are respectively attracted to the outer sides of the outer yokes. The square hole 144 of the coil frame 143 has the plunger]4
0 slidably passes through the boxwood 351, 1 between the inner yoke 148 and the outer yoke 49 at its upper and lower ends.
A connecting portion 153 protrudes from the upper surface of the collar 51, and an engaging hole 153a for bearing the U-shaped bottle 14 is formed at the upper end of the connecting portion 153. A buffer plate 154 is interposed between the lower ends of the outer yoke 150 and the plunger 14
Provides buffering when 0 moves. Since the magnetic poles N and S of the permanent magnet 149 have the same polarity facing each other as shown in Fig. M14, both upper and lower ends 148a and 14 of the inner yoke 148
In 8bK, a magnetic pole S is exposed, and magnetic poles N are exposed at the upper and lower ends of the outer yoke 150 and are opposed to each other. Therefore, the flanges 151 and 152 of the grunge 140 are attracted and latched in either position shown in FIG. 14 or FIG. 15. The return coil spring 155 is compressed between the coil frame 143 and the detachment 134 of the handle III, and its spring force is weaker than the attraction force of the Granger 40, but the handle III can be turned off manually or by using the magnet and position 112e. During operation, this spring action works to forcefully open the contacts 4fi and 47. This 'electromagnetic device 112 is
When the handle is turned on or off when the armpit is not energized, the force causes the granja 140 to move up and down, and as described above, the magnetic force of the permanent magnet 149 moves the granjar 40 to the upper position. Since the upper and lower positions are respectively held, the on and off states of the handle 111 are maintained at seven times, thereby causing the movable contact 48 to contact the fixed contact 46 with contact pressure as shown in Figure #g14. It is held in the open state shown in FIG. 15. On the other hand, a pair of rectifying diodes 15fi are connected between the end of the coil 147 and the operation terminal 22 as shown in FIG.
, 157 and the switching contact part 158 are interposed to connect f.
L. This electromagnet device 112 can be driven by alternating current. That is, these parts are arranged in a slot 159 formed on the side of the middle case 2 between the middle case 2 and the side case 3. First, the mouth-shaped fixed contact plate [60] is fitted into the fixed protrusion 161, and the pair of switching contact plates 162 and 163 are slit in the support protrusion 164 facing the fixed protrusion 161]fi5
a.

165b in a sandwiched manner, and is in contact with the upper and lower surfaces of the fixed contact plate 160. Further, an arcuate hole 166 is formed at the threshold between the fixed protrusion 161 and the support protrusion 164, and a switching contact drive bar 167 integrally formed on the side surface of the arm 134 of the handle 111 passes through the arcuate hole 166ζ to pass through the switching contact plate 1.
62 and Ifia, and the lower switching contact plate 16 is located between the /1 handle 111 and the ON position (Figs.
3 is opened from the fixed contact plate 160, and the upper switching contact plate 62 is opened by the on position (FIG. 15) of the /N7 dollar 111. Then, as shown in FIG. 21, the end of the coil 147 is connected to the fixed contact plate 160 and one operating terminal 22, and the polarity is opposite to that of the pair of contact plates 11b and 163. Diodes 156 and 157 are connected, and each of the diodes 156 and 157 is connected to the remaining operating terminals 22. In FIG. 21, 67 is an AC power supply, and 168 is an external changeover switch. In this way, for example, when the external changeover switch 168 is turned on, a unidirectional current flows through the diode 156 to the coil 147, and the granger 40 moves from the upper position in FIG. 15 to the TIII ItzR position in FIG. and retained. At this time, the drive lever 167 rotates downward and the surrounding contact plate]
62 comes into contact with the fixed contact plate 160, and the OJ moving contact plate Noro 3 moves away from the fixed contact plate 160, as shown in FIG. 21(b).
becomes the state of If you want to turn it off, switch the external changeover switch 168 to the off side, and the coil 147 will be energized in the opposite direction, driving the glazer 40 upward, driving the handle III to the off position, and then turning the lever 167 to switch the movable contact plates 162 and 163. In the trip state described above, the latch link 64 is released from the trisoglinter and rotated by the pin 127, as shown in FIGS. 16 and M17. Due to the rotation of the pin 63, the movable contact 48 rotates via the operation link 110 using the pin 138 of the nodle 111 as a fulcrum, and the granger of the noondle 111 and the electromagnet device t112]53
A trip 7 Lee is performed in which the movable contact 47 is opened from the fixed contact 46 without operating.

The above is the case of the 3-wire type, but in the case of the 2a type, as shown in FIG. The operating principle is the same as that of the three-wire type. It goes without saying that the electromagnet device [2] can be driven by further applying a DC voltage.

The trip button 171 is used to arbitrarily test the trip operation of the mechanism section 78. That is, as shown in FIGS. 7 and 11, the middle case 2 and the upper cover 40
A button hole 172 and a mounting groove 173 are formed on the left g4 of the position of the I/handle 111, and the button 171 is inserted into this from the side opening of the middle case 2, and is rotatably supported by the shaft 74. . This test button 17] has a fixed IF+1173a extending in the rotational direction within the mounting groove 173, and this I8! The LI pheasant arm 173a is located in the lateral groove 175 of the mounting groove 173, and the protrusion 177 at the tip of the fixed arm 173a is elastically locked by a protrusion 76 provided on the protrusion of the lateral 6 da 175, thereby setting the Lp fixed state. When the test button 171f moves to the left with a force exceeding a certain level in FIG. 7, the protrusion 177 climbs over the protrusion 175. The lower end 17 of the test button 171 faces the front side of the upper end edge of the aperture rim 109. Therefore, test button 171
When the trip link 09 is rotated, its lower end pushes the side piece 1]4 of the trip link 109, causing the trip link]09 to rotate to the right, thereby releasing the engagement with the latte link 64.
Trisogage movement is performed.

The option switch 178Ii is used for external e-information, etc., and is installed in the four parts 179 formed on the inner case 2 side between the inner case 2 and the side case 3, as shown in Fig. M8. The four parts 179 and the four parts 159 including the diodes 1561157 are formed by the difference in the width space occupied by the electromagnetic device 2 and the width space occupied by the mechanism part 78 and the hand knob 2. This option switch 1781d M is connected to the auxiliary terminal 23, and the switch is operated when the tripping operation of the launch link 64 of the mechanism section 78 is detected by the member 78a.

The remote control circuit breaker with the above configuration is
Each part is housed in the outer shell A as shown in hlJ, but one mechanism part 78 is an electromagnetic device 44 that operates instantaneously. Bimetal 45. Movable contact 48. Arc running plate 84. Handle 111 and remote control electromagnetic device 112
) l) It is housed in the main body case 1 together with the knob display device 139 in one block.

In addition, this breaker is used with the bottom plate 49 of the main body mounted on the vertical mounting surface. At this time, the 12 operating electromagnet devices 140 are oriented horizontally with respect to the ground, and operate in the horizontal direction. Furthermore, this remote control type circuit breaker shows the structure of the poles.Q.In the case of multiple poles, install the same structure on the side and pass the caulking pins through the connecting holes 5 to 7. This allows them to be connected together. In the case of three poles, pJ19 is K as shown in the diagram.

In place of the upper cover 4, a three-pole upper cover 180 is placed over the three circuit breakers to distinguish it from a simple arrangement of three single-pole circuit breakers in a distribution board, etc., and the handle length 18]
and trip test button hole 182 are also opened, and the protrusion that serves as a housing for the handle of the other pole is removed, and the test button 17 is removed. Further, in the case of multi-pole, an on/off interlocking rod 183 and a trisegage interlocking rod 84 are applied for interlocking the handle and interlocking the trisegage, respectively. The trisegage interlocking rod 184 shown in FIG. 20 has a through hole 79 formed inside the difference between the trip link 109 and the latch link 64 as shown in FIG. A launch link sensing protrusion 86 and a trip link tripping protrusion 87 opposite to the pole trip link 09 and the latch link 64 protrude, and both ends thereof are rotatably supported on the side plates of the outer shell. For example, when an abnormal current flows in a single-pole electrical circuit and the trigger is activated, the upper end m of the two-notch link b4 rotates upward (by the spring ) 27, so the launch link sensing protrusion 18G is pushed and rotates to the left as shown in Fig. 7. The tripping protrusion 187 at each pole rotates and the trip link]0
Push 9 in the tripping direction. As a result, the other poles also perform the trisodging operation at the same time. On the other hand, the on/off interlocking rod 183 is interlocked by forming holes 183a to 183f at the position of the display plate of each 7 and 111, and interlocking with these. Hand or electromagnetic device [11
When the terminal 2 is turned on or off, the other terminal is also turned on or off at the same time. 6-pole coil of rough operation electromagnet device 112] 47
By connecting them in series with each other, using only the operating terminal 22f''i'l pole, and sending an operating signal to the operating terminal 22, the electromagnetic devices 112 can work simultaneously to perform the same operation.

Next, we will briefly explain the operation of this remote control type circuit breaker. In other words, the on state is the first
This is shown in FIG. 8(a) and FIG. 14.

In this case, the latch link 64 is latched to the trip link 109, the nondle Ill is tilted to the right, the movable contact 48 is brought into contact with the fixed contact 46, and the granger 140 of the operating electromagnet device 112 is moved downward and the permanent magnet 149. As described above, for this purpose, the handle 1 and the movable contact 48 are held in the on position. This on operation may be performed by directly operating the handle 1, or by sending a signal to the operating terminal 22 to drive the plunger 140 downward.

The off state is shown in FIG. 18(b) and FIG. 15. Similar to Dσ, the launch link 64 is latched, the handle 111 is on the left side, and the movable contact 48 is therefore in an open state. In addition, the electromagnet device for operation] 12 flange] 4
0 moves up and is retained. Its working relationship and operating mode are the same as those in the on-state described above.

The trip state and the overcurrent trigger are shown in FIG. 18(C) and FIG. 16. That is, if the ON state shown in FIG. 14 is exceeded and an overcurrent flows in the electrical circuit.

Due to the self-heating of the bimetal 45, the trisogel link 109 is gradually pressed and the lunch link 64 is released! Then, the two-notch link 64 rotates. Therefore, the removable contact pin 63 moves downward, and the handle 111
Since it remains held at 0, the movable contact 47 becomes the fixed contact 46.
away from it, and the electrical circuit is cut off. To reset after a trip, go to the state shown in Figure 16 in the above-mentioned 5.
When the movable contact 48 is pulled up by the operating operation link 110, the latch link 64 simultaneously moves to the right, and the launch portion 128 is seated on the hook portion 119 of the trisedge link 109. be done.

Of course, signals may be applied to the operating terminals 15 and 16 to activate the electromagnetic device 112 to move the non-drill 111 to the OFF position.

The shorting ring is shown in FIG. 18(d) and FIG. 17. That is, in the on state, when a short circuit current flows through the electrical circuit, the plunger 96 of the electromagnetic device 44
is attracted to. Due to this, the tIT moving rod 71 is pushed out and pushes the lower end of the trip link 109, and the trip link 09 rotates, so the latch link 64 is released, and the movable contact 48 operates as one pole as described above. but,
Before the movable contact 48 is opened by such link interlocking, the collar 97 of the forced opening rod 96 engages the contact plate 57 and pulls the movable contact 47 at exactly the same time as the granger 70 operates. nl is spaced from the fixed contact 46. That is, just before the latch link 64 is tripped, it is raised and the contact plate 57 rotates about the pin 60 in a direction that compresses the contact pressure applying spring 59, thereby performing an opening operation. The reset operation is the same as described above.

In these trip states, when the launch link 64 turns 1Jh'r, the display link] 39a rotates, and the tri-knob display board] 39c turns on.
Tring display is performed after t.

A second embodiment of the invention is shown in FIGS. 23 to 28. That is, this remote control type circuit breaker can be roughly divided into two parts: body 201. Terminal 202m.

202b, switchgear tA@203. Bistable electromagnet 20
4 and a detection bimetal 205. The container body 201 consists of a main body 206 that has an opening on the side and parts are fitted sideways, and a cover 207 that opens the opening.
It is fixed together with four caulking studs 208 * 20
1a is the take + J groove. The terminals 202a and 202b are connected to the terminal plate 209°f4 and tJji210. terminal nut 21
1 and a load terminal 212a, and a load terminal 2]2b, each of which is connected to the t'L vessel 201.
A heart is installed at both ends of the heart.

The opening/closing mechanism part 203 is a mechanical frame 2]3 is the caulking part 21
4 is caulked to form a substantially U-shape (when viewed from above), and non-dle fork holding pieces 215 extend from the upper edges on both sides, and this mechanical frame 2]3 is inserted into the vessel body 201 by the rear shaft. Fixed. The fixed contacts 2]6 constituting the opening/closing section are integrally formed with the terminal plate 209 of the load terminal 202b and supported on the inner wall surface of the container body 201, and a fixed contact 217 is fixed to the tip thereof. One movable contact 218
A contact shaft 2]9 is provided at the lower end, and its lower end is passed vertically through the mechanical frame 2]3, and the bearing notches 22 formed at the lower end of both sides of the mechanical frame 2130 are fitted with the contact strips 239, and the reeded upper end is fitted. A movable contact 22 is provided on the fixed contact 2]7.
is facing. The contact spring 222 is compressed between the movable contact 2]8 and the end wall of the mechanism 7 frame 2]3, and the contact spring 222 is compressed to prevent the contact spring 222 from coming off.
rVc forms 223 and 224. This contact spring 222 causes the movable contact 218 to have an opening force. A shaft 225 is provided at a position between the movable contact 221 of the movable contact 218 and the spring support part (224), and one end of the contact lever 226 is pivotally supported on this shaft. A second shaft 227 is provided at the other end of the link 226, and this
One end 229 of the U-shaped connection IJ link 228 is passed through, and a third shaft 231 is provided in the other end hole 230 of the connection link 228 . In addition, 234 retaining pieces of a U-shaped link 233 formed by bending a 4+11 rod into a U-shape are connected to the intermediate hole 232 at the bottom of the connecting link 228 next to the second shaft 227, and the bottom of the U-shaped link 233 is A vertical slit 236 (perpendicular to the rotating direction of the movable contact 218) formed in the mechanical frame 213 with the piece 235
I am passing through. The latch link 237 has a launch portion 2 at the top.
38, a moving piece 239 on the side, and a latch in the middle part @JJ240, and connect this to the mechanical frame 2.
The coil housing of the latch link spring 242 formed by a torsion coil spring is passed through the latch link shaft 240K, and both ends are connected to the mechanical frame 2]3. 237, thereby positioning the latch part 238 at a position where it intersects the vertical slit 236 by appropriate means, and forming a guiding curved part 243 on the upper edge of the latch part 238 to attach the U-shaped link 233. When the lower piece 235 moves to the lower end of the vertical slit 236, the latch portion 238 is pushed open so that the lower piece 235 latches.

- The handle 244 is provided with a handle shaft 245 in the middle part.

This is passed through the hole 246 of the 7-handle support piece 215 of the mechanical frame 2]3 so that it can rotate in the same direction as the 0-■ moving contact 218. The distal end of the handle 244 has a cutout recess 247 that engages with the end piece 228a of the connecting link 228, and an operating section 248 on the opposite side of the distal end.
protrudes beyond the handle hole 249 of the container body 201. And this mechanical frame 2/3 is fixed with 1111240
.

This is done by positioning the protrusions at both ends of 245 on the length (not shown) of the vessel body 201.

The bistable electromagnet 204 has a coil 25 in a coil frame 250.
1 is wound, a pair of U-shaped magnetic magnet small yokes 252a and 252b are fitted on both sides of the coil frame 250, and a permanent magnet 25 is attached to the outer surface of the bone small yokes 252a and 252b.
Same polarity 1 of 3a +253b! I(fc) A pair of U-shaped hole yokes 254a, 254a, 254a, 254a, 253b, etc.
254b is the protruding piece 255a of the coil frame 250, 25
5b, and on the other hand, the granger 256 is slidably passed through the groove of the coil frame 250, and the small yokes 252a, 252b and the large yokes 254a, 2 of the grab jar 256 are fitted.
Armatures 257a and 257b are provided at positions between 54b, and one end of the granger 256 projects outward. The electromagnets 204 are fixed as a whole by being housed in the partition wall 258 of the container body 201 in this combined state. A terminal plate 260 of a pair of operation terminals 259 is connected to both ends of the coil 25.
0 is installed above the power terminal 202a of the device body 201,
Terminal screws 261 are provided on the terminal plate 260 . In addition, the granger 256t'i is disposed in such a manner that it moves back and forth approximately parallel to the rotational direction of the movable contact 218 when housed in the body 201, and the shaft hole 256 of the protruding end of the granger 256
a is connected to the third shaft 23]. The operation of this bistable IIR magnet 204 is as follows.

The armatures 257a, 257b of the plunger 256 are in the states shown in FIGS. 24 and 27 when the yokes 252a, 2
52b.

When touching 254a and 254b, the permanent magnet 253
A and 253b result in a stable state. That is, the grab jar 256 has two stable states, a stable state N on the protruding side (FIG. 24) and a stable state after retreating, and can be reversed from one state to the other by energizing the coil 251 in one direction or the opposite direction. Operate.

The base end of the bimetal 205 is welded (or fixed by caulking) to the terminal plate 209 of the source terminal 202a and held therein, and the operating end is provided with an adjustment screw 262, the tip of which is attached to the moving piece of the latch lick 237. It is facing 239.

In addition, an ijJ cable 263 made of copper or steel is welded between the operating end and the pivot side end of the movable contact 218, thereby connecting the power terminal 202a and the load terminal 202b to the bimetal 205, l)J. Twisted wire 263. Town moving contact 218. Drive contact 221. The fixed contacts 2 and 7 are connected to form an inner electric circuit.

The operation will be explained. First, in the on state, as shown in FIG. 24, the lower piece 235 of the U-shaped link 233 is latched to the latch grip 237, and the grab jar 256 of the electromagnet 204 is at a stable position of 1 g on the protruding side. Connecting link 237 is 2 Sochinyor, connecting link 228 is 3
The second axis 227 is pulled by the zero-shaped link 233 to a position where it approaches the plane containing the first axis 225 and the third axis 231, and the mutual distance between the axes 225 and 23 is the greatest,
Due to the dimensional relationship, the movable contact 218 is pushed and the movable contact 22 comes into contact with the fixed contact 217. In this case, the position where the movable contact 221 contacts the fixed contact 217 is also
The OJ moving contact 218 is rotated to the OJ moving contact 221f to compress the contact spring 222 to push the Nh contact 218, and as a result, the contact 21722
1K contact pressure is applied. This R contactor shaft 219 has moved the notch 220P3 to a state where it is floating from the inner end of the notch 220 to the extent shown in FIG. The position where the handle 244 is tilted in this on state is the on state of the handle steel. This on state is maintained by the permanent magnet 2 of the electromagnet 204.
According to 5:1a 125:3b. Then, the ON operation is performed by passing current through the coil 251 and moving the plunger 25J to the position shown in the figure, or by operating the handle 244.

Vertical Mfdm 27 As shown in the figure, the granger 256 is held in a stable backward position with the U-shaped link 233 latched. As the granger 256 retreats, the movable contact 218 opens. The operation is performed by energizing the electromagnet 204 from the ON state to reverse the granger 256, or by reversing the handle 244.

In the trip state, as shown in Fig. 28, when an overcurrent of more than a predetermined value flows through the electric circuit, the bimetal 205 bends to the low expansion side due to self-heating, and when the bimetal 205 bends by a predetermined amount, the adjustment screw 2
62 presses the moving piece 239 of the latch link 237 and latches ff1l 238 is the lower piece 335 of the U-shaped link 233
A tripping action is performed to remove the As a result, the action of the contact spring 2220 causes the second @227 to act on the first and third
Away from the plane containing the axes 225 and 231, the contact 218 performs an opening operation. At this time, the connecting link 228
Since the plunger 256 remains fixed, the third shaft 231 is rotated until the handle 244 is in a vertical position, and the trip is displayed.

Note that the reset is performed when the bimetal 205 is restored, and therefore the latch link 237 is restored by the spring 242, and the coil 251 is energized and the y-lunger 256 is reset.
It is best to move the handlebar 244 to the stable position on the reverse side and tilt the handle 244 to the off side. .

〔Effect of the invention〕

As described above, according to the remote control type circuit interrupter of the present invention, by using a bistable electromagnet, it is possible to achieve miniaturization and reduce operating power.

[Brief explanation of drawings]

FIG. 1 is a plan view of the first embodiment of the invention, FIG. 2 is a side view thereof, FIG. 3 is a front view, FIG. 4 is a rear view, FIG. 5 is a side view of the main body case, and FIG. The figure is a side view from inside the middle case, Figure 7 is a side view with the middle case removed, Figure 8 is a sectional view with the side case removed, and Figure 9 is a partially cutaway plan view. , FIG. 1Q is a sectional view taken along the line X-X in FIG. 7, FIG. 11 is an exploded perspective view, FIG. 12 is an exploded perspective view of the excitation contact and the mechanism of the electromagnet device 2, and FIG. 13 is an operating electromagnet device. and an exploded perspective view of the handle; FIG. 14 is a sectional view in the on state;
Fig. 15 is a cross-sectional view of the off state, Fig. 16 is a cross-sectional view of the trip state using bimetal, Fig. 17 is a cross-sectional view of the trip state using the ima' stone device, Fig. 18 #'i movement t'1
= gland diagram, Figure 19 is a plan view of the 300 million type circuit breaker, Figure 2
Fig. 0 is a perspective view of the trip interlocking rod, Fig. 21 is a 3g type main body drive path diagram of the operating electromagnet device, Fig. 22 is a two-wire drive circuit diagram, and Fig. 23 is a diagram of the second embodiment of the present invention. Perspective view, 2nd
Figure 4 is a cross-sectional view of the on-state, Figure 25 is a perspective view of the vessel with the body removed, Figure 26 is an exploded perspective view of the same, Figure 27 is a cross-sectional view of the off-state, and Figure 28 is a trisometric view. FIG. 45, 205...bimetal, 46, 217...
・Fixed contact, 47, 221... Movable contact, 48,
218...Movable contact, 59, 222...d,
66... Short circuit sensor, 64° 237... Latch link, 78, 203... Mechanism section, ]09... Trip link, III, 244... Handle, 112° 204... Bistable electromagnet , 140, 256...Plunger ζ'; 3 +-:t:r'; 4 I, l

Claims (1)

[Claims] The movable contact facing the solid contact is energized by the UD pole, and the 5F movable contact and the 7-ndle are linked in a movable manner, and the linkage is broken in response to an abnormal current such as an overcurrent. A tripping opening/closing PA structure and a bistable 1" magnet coupled to a granger in the operating sequence of the handle to engage the movable contact and maintain the on and off positions of the movable contact in its own stable position. Malt control type circuit breaker.