JPS59101736A - 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 Field] This invention relates to a remote controlled circuit breaker.

[Background technology]

Since the remote control circuit breaker wire is remotely controlled, the actual operating status of the circuit breaker can be confirmed from a distance, and it is necessary to know the trip operating status.

[Purpose of the invention]

Therefore, an object of the present invention is to provide a remote control type circuit breaker that can safely accommodate an optional switch with a simple configuration.

[Disclosure of the invention]

In this invention, a mechanical part is fixed by a main case and an inner case that constitute an outer shell, and a side case that covers the inner case fixes the inner case to the main case, and a space between the inner case, the side case, and A space is formed to store the switch.As a result, it is easy to provide a means to link the operation of the mechanism through the inner case, and it is safe because the inner case makes it easy to ensure the insulation of the ninth switch. This allows for a built-in switch with a simple configuration.

An embodiment of this invention is shown in FIGS. 1 to 22. That is, first, I will explain the structure of one pole.This is a 30 ampere frame.It detects overcurrent and short circuit current in the line and trips it, and also turns on the line connected to the handle and remote side operation signal. In order to perform off and reset operations, the outer shell (breaker main body) A is mainly connected to the main body case 1 as shown in Fig. 11. Middle case 2. Side case 3. The middle case 2 consists of an upper cover 4 and has a top plate IC and an upright plate 11b that substantially closes the lateral and upward openings of the main case 1, and the side case 3 is placed on the outer surface of the middle case 72.
are put on and combined together by eyelet pins 8 that pass through three connecting holes 5 to 7 in the main case 1 and the side cases 3, and the middle case 2 is held in place. The upper cover 4 is made of elastic plastic and includes mounting walls 9 and 10 stepped at the upper ends of the main case 1 and side cases 3, and the top plate 11 of the middle case 2.
A hinge part 13 is attached to both end edges of K, the terminal cover 12 is extended outward from both ends, and the base part thereof is formed into a thin wall (12a). is formed. 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 have a taper of 1.
4, step-like steps 15 to 18 are formed on both sides of the outer shell A by the main case 1 and the inner case 2, and a breaker is installed at the lower end of the outer shell A on a distribution board, etc. A mounting groove 19 for mounting is formed in the main case 1.

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 include terminal plates 24□, 25. as shown in FIG. Washer with presser projection 26. Spring washer 27. The square nut 28 and the terminal screw 29 are the constituent parts M, and a screw through hole 30 is formed in each of the terminal plates 24 and 25, and the washer 27 and the washer '26 are passed through the terminal screw 29, and the terminal screw 29 is screwed through. The hole 30'Vc passes through and is screwed into the nut 28 on the lower surface.Each terminal plate 24, 25 has one edge thereof bent downward to form a hanging piece 31, 32, and each terminal device 20 .21 is the lower step 15.1 on both sides of the outer shell A.
6. Therefore, these steps 15.16
are screw/nut loose insertion grooves 33 and hanging piece insertion sleeves l-34, 35 that open on the upper surface and in the lateral direction of the main body case 1.
is formed.

Connect each terminal device 20.21 to the seventh terminal from the opening side of the main body case 1.
Insert the hanging piece 31.32 into the stepped part 15.16 as shown in the figure.
are inserted into the slits 34 and 35, the terminal screws 29 and the nuts 28 are passed through the grooves 33, and the inner case 2 and the side cases 3 are closed. Connection is by electric wire (not shown)
is passed between the washer 26 and the terminal plate 24, 25, and the terminal screw 29 is twisted to tighten the terminal screw 29.

Further, the operation terminal 22 has a terminal screw 37 screwed into the upper part of the U-shaped terminal frame 36, and is made up of three pieces in consideration of three-wire remote control. Inner case 72 of step portion 16 where terminal device 21 is located
It is installed in a position separated by an insulating partition plate 38 of the upper step part 18 formed in the upper step part 18. That is, a fixing slit 39 is formed in the stepped portion 18, the three terminal frames 34 are inserted into the slit 39, and the terminal frames 34 are clamped and fixed to the stepped portion 18 by the spring action of the terminal 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 a screw 41 screwed into the lower piece of the double-shaped terminal plate 40, and is installed between the insulating partition plates 42 of the stepped portion 17 of the inner case 72, and is held by inserting the upper piece 408 into the holding groove 17a. be done. The terminal cover 12 is located exactly on the upper surface of the operation terminal 22 and the auxiliary terminal 23, and when this breaker is installed on a distribution board etc. and the upper surface is covered with a flash plate, the flash plate and the terminals 22 and 23 are This ensures insulation. In addition, these terminals 22.2
Connection to terminal 3 is performed by opening terminal cover 12 upward.

As shown in FIG. 11, contact portions 43. There is a plunger, a type electromagnetic device 44 and a bimetal 45, which are connected to the main terminal 2.
They are arranged on a substantially straight line between 0.21 and 0.21. Contact part 43 controls the opening and closing of the welfare electrical circuit, and includes a fixed contact 46 and a movable contact 4.
It consists of a movable contact 48 with 7. In order to position the contact portion 43, a partition plate 5° having a height of approximately s, which is the height of the main body case 1, is erected at the center of the bottom plate 49 of the main body case 1. When viewed from the lateral opening, the left side is an arc extinguishing chamber 51, the right side is an operating electromagnet storage chamber 52,
The fixed contact plate 53 is bent into an inverted U-shape along the surface of the partition plate 5o, and is pushed into the main body case 1 from the lateral opening side, guided by the partition plate 5o, and inserted into the end on the storage chamber 52 side. The rear end of the provided width plate 54 is positioned by coming into contact with the rear surface of the main body case 1 when viewed from the lateral opening side. and fixed contact 46
is attached to the arc extinguishing chamber 51 side of the fixed contact plate 53.

In addition, the width plate 54 and the terminal plate 2 in the main body case IK
A slit 55 is formed in the lower part of the storage chamber 52 between the hanging piece 32 of the storage chamber 52, and a stranded copper wire 56 or a conductive plate is inserted into the slit 55 to make the width as shown in FIG. The plate 54 and the hanging piece 32 are connected by welding. The movable contact 48 is connected to the busy movable contact plate 57 as shown in Fig. 12.
．． Contact frame 58° Contact pressure applying spring 59 and movable contact 47
The movable contact plate 57 and the contact frame 58 are connected to the pin 6 at the top.
As shown in FIGS. 7 and 11, a contact pressure applying spring 59 is installed in a compressed state between the contact plate 57 and the upper end of the contact frame 58 on the upper side of the pin 60. This spring 5
9, the intermediate portion of the contact plate 57 comes into elastic contact with the lower end 61 of the contact plate 58, resulting in a stable state.

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 contact 48 is connected to a pothole 62 at the lower end of the contact frame 58.
A pin 63 is passed through the upper support hole 61a, and this pin 6
3, the movable contact 47 faces the fixed contact 46 as shown in FIG. 7.

The plunger type electromagnet device 44 is for discharging short circuit current, and mainly includes a yoke 65, a coil 66, a coil tube 67, and a fixed iron core 68 as shown in FIG.

With return spring 69. The plunger 7o and the movable rod 71 are the constituent parts. First, the yoke 65 is made up of a U-shaped frame 72 and a backing plate 73, and the backing plate 73 is an upright piece 72!1 of the U-shaped frame 72.
It is constructed and fixed between the upper piece 74 and the lower piece 75 on the opposite side by fitting and caulking the tab 76 and the square hole 77. This yoke 6
Reference numeral 5 indicates a mechanism section 78, which will be described later.
In addition to a (Ill K protrusion 81 is formed and the frame 7
The square holes 83 of the opposite side plate 82 of No. 9 are fitted and caulked to stand the opposite side plate 82 facing the one side plate 80. Further, an arc running plate 84 is bent and extended from the lower end of the contact plate 73. In this frame 79, the lower piece 75 of the yoke 65 is placed on the support stand 1a provided with the main body case IK, and the arc travel plate 84 is positioned on the lower surface of the support stand 1a.
Two pins 87 and 88, which are arranged to sandwich the main case 1 and the inner case 2 and which constitute the mechanism section 78 described later,
These pins 87.
88 is passed through the 7-ray A9 (2) hole 91.921C to hold the frame 79, and also comes into contact with the opposite side plate 82 of the frame 79 on the side surface of the inner case 2 (Fig. 9), whereby the yoke 6b and the frame 79 The pose of is determined. The fixed iron core 68 has a through hole 68a, and is fitted from the inside into a hole 93 formed in the vertical piece 72a of the U-shaped frame 72 and fixed by caulking.The movable rod 71 is longer than the fixed iron core 68 and has one through hole 688. K is slidably inserted. Coil tube 6
7 has a small diameter portion 94 at one end, and this small diameter portion 94 is fitted into a mounting hole 95 formed in the backing plate 73, and the other end is fitted onto the fixed iron core 68 for erection. The plunger 7o is slidably fitted into the coil tube 67, and a forced opening rod 96 protrudes from one end of the plunger 7o, which protrudes outward from the small diameter portion 94 of the coil tube 67, with a bar 97 formed at its tip, and a fixed contact. It passes through the large diameter side of the pothole 62 of the movable contact plate 57 facing the contact plate 46 and is located on the small diameter side thereof (FIG. 7). The return spring 69 is installed between the fixed iron core 68 and the plunger 70 . The coil/v66 has a large wire cross-sectional area and therefore has rigidity, and the hole of the coil 66 is fitted onto the coil tube 67,
One end thereof is folded back in the axial direction and welded to the hanging piece 31 of the terminal plate 24 of the load side terminal device 2°. With such a configuration, this electromagnet device 44
If the rated current or overcurrent flows through 6, the return spring 69'
Although the movement of the plunger 70 is limited by the spring force,
When a short-circuit current flows, the magnetic flux between the fixed iron core 68 and the plunger 70 increases, overcoming the force of the return spring 69 and causing the plunger 7 to
0 is attracted to the fixed iron core 68, and the plunger 70 operates. As a result, the movable rod 71 is pushed by the plunger 70 and protrudes outward from the vertical piece 72a of the U-shaped frame 72, and the collar 97 of the forced opening rod 96 is locked to the small diameter side of the pothole 62, and the movable contact Plate 57'fI: performs a pulling action.

The bimetal 45 detects overcurrent, and its main body is made up of two thin plates with different coefficients of thermal expansion that are superimposed together.As shown in FIGS. 7 and 11, it consists of a horizontal piece 98 and a diagonal piece 99. Bend it into an abbreviated shape, screw the gap adjustment screw ]00 into the upper end of the diagonal piece 99, form a caulking hole (not shown) in the horizontal piece 98K, and caulk it to the lower end of the 111I plate 82 of the frame 79. (welding is also acceptable). This bimetal/I/45 is connected to the other end of the carp Iv66 and the bimetal/L
The upper end of '45 is welded and connected by flexible copper stranded wire 101.

Then, when the side plate 82 of the frame 79 and the upper end of the movable contact plate 57 are welded and connected with the movable copper stranded wire 102, they are heated by their own Joule heat, and the high expansion side is heated by the terminal device (20
) side, the diagonal piece 99 curves □ in the direction away from the terminal device 20. The curved operation is caused by an overcurrent of several times the rated current.From the above configuration, the electrical circuit is sequentially connected from the power supply side terminal device (21) to the connecting copper to the p-line 56. Fixed contact plate 53° Fixed contact 46. Movable contact 47. Movable contact plate 57
゜Copper stranded wire 102. Side plate 82 of frame 79. Bimetal 45. It is connected to the load side terminal device (20) via the copper stranded wire ioi and the coil 66tl. Opening and closing are controlled by the contact portion 43. In addition, the arc extinguishing chamber 51 is designed to extinguish the arc generated at the contact portion 43 when a short circuit is interrupted by quickly separating it from between the contacts 46 and 47.The arc extinguishing chamber 51 is configured to extinguish the arc generated at the contact portion 43 by quickly separating it from the contact points 46 and 47. An exhaust port 103 is formed in the lower part of the device (20), and an arc traveling plate 104t continuously extends from below the fixed contact 46 of the fixed contact plate 53 and extends several steps along the partition plate 51 and the bottom plate 49 of the arc extinguishing chamber 51. Then, it is placed opposite the upper arc running plate 84, and the exhaust port 103
A deion grid 105 is placed between the arc travel vi84.104 inside the deaion grid 105, an exhaust plate 106 with many holes is erected on the back side of the deaion grid 105, and an exhaust plate 106 with many holes is placed between the deaion grid 105 and the fixed contact plate 53. both −+
An arc-extinguishing side plate 107 is provided at 1111 to protect the main case 1 and the middle case 2 from arcing and to form a complete arc gas return path. Further, a protruding rib 108 is provided on the center line of the arc travel plate 104 from the identification contact 46 to the deion grid 105 to facilitate the travel of the arc and avoid sticking. The operation of the arc extinguishing device is such that when an arc is generated between the contacts 46 and 47 due to the opening of the contacts 46 and 47 during a short circuit, the current path containing the arc is identified as the contact plate 53. Identification contact 46. Arc, movable 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 moves from the contacts 46° and 47 and travels through the arc travel plate 84, 1041, approaches the deion grid 105, is attracted and enters the deaion grid 105, and is divided and cooled by the deaion grid 105. The arc is extinguished, and the gas is discharged to the exhaust plate 10.
6 and is exhausted from the exhaust port 103. In this way, short-circuit breaker speed is increased.

The mechanism section 78 for turning on, off, tripping and resetting the movable contactor 43 is connected to a trip link 109 as shown in FIGS. 11 and 12. Latch link 64. Operation link 110. Handle 111 and operating electromagnet device 1
It consists of 12. Trip link 109 is the 12th
As shown in the figure, it consists of a vertical piece 113 and a side piece 114 integrally connected at the intermediate part of the vertical piece 113, and a lug 115 is formed on the side opposite to the side piece 114 of the vertical piece 113, and the side piece 114 and the lug are formed. 115 and a shaft hole 116 is formed in the bin 8711?1. Side piece 80.82 of frame 79 bimetal/L/45
It passes through the hole 91 at the side end, and both ends are pivoted into support holes 89 formed in the main case 1 and the middle case 2. The lower end of the vertical piece 113 is located in front of the movable rod 71 of the plunger-type electromagnet device 44 as shown in FIG. 7, and the upper end is located in front of the gap adjustment screw 100 of the bimetal 45.

Further, the side piece 114 stands obliquely upward, and forms a downward hooking part 119 on the obliquely upper edge side of the upper end thereof, and connects the upper end edge to the arcuate part 12.
It is formed to 0. Pin 8 of this trip link 109
A torsion coil spring 121 for return is inserted into and supported by 7.
One end portion 121a is engaged with the lower oblique edge of the side piece 114, and the other end portion 112b is engaged with and engaged with the upper piece 74 of the yoke 65 to rotate the trip link 109 counterclockwise in FIG. The lower end of the vertical piece 113 comes into contact with the movable rod 71 and is latched to the protruding surface of the fixed iron core 68. The latch link 64 has a pair of elongated side pieces 122 and 123 facing each other,
Attach the left l# of the upper end (Fig. 12) to the bridging piece 12 for the latch.
4, and a pin 88'f is inserted into the hole 125 in the middle of the side pieces 122 and 123, and the pin 88 is inserted into the hole 92 on the movable contact 48 side of the side pieces 80 and 82 of the frame 79. Further, both ends are pivoted through the support holes 90 of the main case 1 and the middle case 2. A return spring 127 is supported on the pin 88, one end 27a of which is engaged with the upper piece 74 of the yoke 65, and the other end 127b is engaged with the lower edge of the side pieces 122 and 123. The spring action urges the shiratchi link 64 to rotate clockwise in FIG. The upper end of this latch link 64 and the upper end of the trip link 109 intersect, and the latch part 128 at the lower end of the bridging piece 124 is located above the hook part 119 of the trip link 109 in the rotating direction. There is. Therefore, when the latch link 64 is rotated to the left against the spring force of the torsion coil spring 127, the latch portion 128 slides on the arc portion 120 of the trip link 109, and the trip link
09 to the right against the spring action, and the latch portion 12g is engaged with the hook portion 119. From this K, the trip link 109 and the latch link 64 are in a reset state, and the posture of the trip link 109 becomes the detection position of the bimetal demand screw 100 and the movable rod 71 by the vertical piece 113. Then, when the trip link 109 operates, the latch link 64 is released and released, resulting in a trip state. Further, a pin 63 supporting the movable contact 43 is pivotally supported in a hole 129 at the lower end of the latch link 64. A counter plate 126 is integrally formed with the main body case 1 above the contact plate 53, facing the caulking protrusion 76b of the lower piece 75 of the yoke 65, and the contact plate 57 is suspended between the two. is the maximum distance that the contact plate 57 can rotate, thereby preventing the arc from moving upward.

Handle 111Fi, made of insulating material - 11, 11th
As shown in the figure, it is inserted into the handle groove 130a formed slightly to the right of the center of the top plate 11g of the inner case 2 and the handle hole 130b of the first cover 4, and is inserted into the main case 1 and the inner It is rotatably supported between the holes 1313 of the case 2. Operation unevenness 111a f is formed on both sides of the portion of the handle 111 protruding from the upper cover 4 in the rotational direction, and an arc plate-shaped ON display plate 1itb is formed on both sides of the lower side of the upper cover 4 (with "ON" on the surface).
) and off display board 111c (displays “0FF” on the surface) and off display board 111c (displays “0FF
J) is extended, and a connecting hole 133 (Fig. 13) is formed at the lower end of the handle 111 with the shaft 131 in between,
Furthermore, as shown in FIG.
5 (Fig. 13). In this way, handle 1
11 is in the on position as shown in Fig. 14, the handle hole 13
The character "ON" on the ON display board 111b can be read from 0b, and when the handle 111 is in the OFF position as shown in FIG. 15, the OFF display board 111C can be read from the handle hole 130b.
The characters rOFFJ can be read and the on/off status can be confirmed.

The operation link 11O is made by bending both sides of an H-shaped flat plate in the same direction, and consists of both side pieces 136 and a bridge piece 137, and one end of the both side pieces 136 is connected to the connecting hole 133 by a pivot/pin 138.
The other end is connected to the movable contact plate 57 and the contact frame 58.
It is connected to a pivot pin 60 that supports the. The posture of the handle 111 in FIG. 14 (lowered right posture) is in the on state,
By moving to the right in this way, the operation link 110 is pushed and the movable contact 48 is pushed, and since the latch link 64 is latched to the trip link 109, the movable contact 4 is pushed.
8 rotates about the pin 63, and the movable contact 47 contacts the fixed contact 46. When the handle 111 is further pushed to the home position, the movable contact plate 57 rotates to the fulcrum of the pin 60 since the movable contact 47 is in contact with the fixed contact 46, and the contact pressure applying spring 59 is compressed by this K. contact pressure is applied. In this way, the contact portion 43 is closed, resulting in an on state, but this state is maintained by the operating electromagnet device 112, which will be described later.
The heart that is done from K. Also, FIG. 15 shows the handle 111 in its open position (tilted to the left), but in this case too, the movable contact 48 rotates around the pivot pin 63 of the latch link 64.
The operating link 110 is pulled by the left side of the handle 111, and the upper end of the movable contact 48 is pulled by the operating link 110, so that the movable contact 47 is exposed from the fixed contact 46 and opened.

Further, this off operation performs a complete reset operation of the latch link 64 after the trip operation.

In other words, the trip-free state is the latch link 64.
is released from the trip link 109 and rotates around the pin 126 by the spring 127, so the latch link 64
will be in the state shown in Figures 16 and @17, but the hand/l
/111 to the left to the home position, the movable contact 48 is pulled up as a whole toward the handle 111 in order to pull the operation link 110, and the latch link 64 is then pulled up toward the handle 111.
The latch portion 128 rotates to the left against the spring force of the spring 127 as a fulcrum, and the latch portion 128 slides on the arcuate surface 120 of the trip link 1090 and is latched to the hook portion 119.

The trip display device 139 displays a trip when a trip operation is performed due to an abnormal current.
Display link 139a and interlocking link 139 as shown in the figure
Consists of b. The lower end of the display link 139a is supported by the handle shaft 131, and the upper end is provided with an arcuate trip display plate 139C (rTRIPJ is displayed on the surface). The interlocking link 139b has both ends bent in the same direction to form a shaft, and is connected to the upper ends of the display link 139a and the latch link 64. This trip display device 139
As shown in FIGS. 14 and 15, when the latch link 64 is in the reset state, the hand/l/111 is in a retracted position from the off position, but as shown in FIGS. When the trip state is reached, the latch link 64 rotates clockwise, pushing the interlocking link 139b and rotating the display link 139a, causing the trip display board 139C to turn on display board 11 of all handles 111.
1b (the hand/I/111 is always in the on position during the trip operation). As a result, when viewed from the handle hole 130b, the trip display plate 1
39, the letters "TRIPJ" can be read, and the display "ON" is hidden.

The operation electromagnetic device 112 has an 11th (9th to 14th)
As shown in the figure, the granger 140f is inserted into the storage part 52 in an upright position with respect to the floor plate 49 of the main body case 1 with the protruding side at the top, and the upper end of the plunger 140 is inserted through the U-shaped bottle 141t. It is connected to the granger connecting hole 135 of the handle 111. This electromagnetic device 112 is of a bistable polar type, and as shown in FIG.
The square hole 144 is passed through the upper and lower flanges 145 and 146.
A coil/I/147 is wound between them, and a pair of inner yokes 148 are fitted on the left and right sides of the coil frame 143 with their upper pieces 148a and lower pieces 148b, and both side edges of the yokes 148 are connected between the flanges 145 and 146. A pair of permanent magnets 149 magnetized in the plate thickness direction are attracted to the outer surface of the inner yoke 148 (the magnetic poles are indicated by N and S), and a pair of outer yokes 150 are attached to the outside of the permanent magnets 149, respectively. Let it absorb. The granger 140 slidably passes through the square hole 144 of the coil frame 143, and the inner yoke 14 is attached to the upper and lower ends of the granger 140.
8 and the outer yoke 150 between the collars 151 and 152
A connecting portion 153 protrudes from the upper surface of the collar 151, and an engagement hole 153a for bearing the U-shaped bottle 141 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 to provide buffering during movement of the granger 140. Magnetic pole N of the permanent magnet 149,
As shown in Figure 14, S has the same polarity facing each other, so
Both upper and lower ends 148a and 148b of the inner yoke 148
At K, a magnetic pole S appears, and at the upper and lower ends of the outer yoke 150, magnetic poles N appear and face 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. Also, a return coil spring 155 is compressed between the coil frame 143 and the arm 134 of the handle 111, and its spring force is weaker than the attraction force of the plunger 140, but the handle 111
When 11 is turned off manually or by the magnet device 112, this spring action works to forcefully open the contacts 46 and 47. In this electromagnetic device 112, when the handle 111 is manually turned on or off in a non-energized state, the plunger 140 moves up and down by the force.
In addition, as described above, since the upper and lower positions of the granger 140 are held by the magnetic force of the permanent magnet 149, the on and off states of the handle 1110 are held, respectively, so that the movable contact 48 is moved as shown in FIG. It is held in contact with the fixed contact 46 with contact pressure, and is held in the open state shown in FIG. 15. on the other hand,
Between the end of the carp/I/147 and the operation terminal
As shown in Figure 1, a pair of rectifying diodes 156 and 15
7 and a switching contact portion 158 are interposed and connected to each other, so that this electromagnet device 112 can be driven by alternating current. That is, these parts are disposed in a recess 159 formed between the middle case 2 and the side case 3 on the middle case 2 side. First, the U-shaped fixed contact plate 160 is fitted onto the fixed protrusion 161, and the pair of switching contact plates 162 and 163 are inserted into the slits 165a and 165b of the support protrusion 164 facing the fixed protrusion 161.
The contact plate 160 is supported in a sandwiched state and is in contact with the upper and lower surfaces of the fixed contact plate 160. Further, an arcuate hole 166 is formed between the fixed protrusion 161 and the support protrusion 164, and the handle 11
A switching contact drive bar 167 integrally formed on the side surface of the arm 134 of 1 passes through the arcuate hole 166 to connect the switching contact plate 162,
It is located between 163 and 111 on position (
8 and 14), the lower switching contact plate 163 is opened from the fixed contact plate 160, and the handle 111 is placed in the OFF position (
15), the upper switching point plate 162 is opened. Then, as shown in FIG. 21, the ends of the coil 147 are connected to the fixed contact plate 160 and one operating terminal 22, and the diodes are connected to the pair of movable contact plates 162 and 163 K so that they have opposite polarities. 156 and 157 are connected, and each diode 156 and 157 is connected to the remaining operation terminal 22. In Fig. 21, 167 is an AC power supply;
68 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 140 is moved from the upper position in FIG. 15 to the lower position in FIG. 14 and held there. . At this time, the drive lever 167
rotates downward, and the movable contact plate 162 moves to the 1a constant contact plate 16.
0, and the town shift contact plate 163 moves one distance from the fixed contact plate 160, resulting in the state shown in FIG. /147 is energized in the opposite direction to drive the plunger 140 upward, driving the handle 111 to the OFF position, and moving the lever 167 to move the movable contact plate 162,
Switch 163. Furthermore, in the tri-lag state described above, the latch link 64 is released from the trip link 109 and rotates by its spring 127 as shown in FIGS. The movable contact 48 rotates at the fulcrum via the operation link 110, and trip-free operation is performed in which the movable contact 47 opens from the fixed contact 46 without operating the hand/L'll and the plunger 153 of the electromagnetic device 112. be exposed.

The above is the case of the 3R type, but in the case of the 2-wire type, the operation terminal 22 connecting the diodes 156 and 157 is made common, and a pair of diodes 169 and 170 are also connected to the external changeover switch 168, as shown in FIG. The operating principle is the same as that of the three-wire type. Of course, the electromagnet device 112 can be driven by further applying a DC voltage.

Trif y” test button 171 is the trilough test button 171 of the mechanism section 78.

This is for optionally testing the operation. That is,
As shown in FIGS. 7 and 11, a button hole 172 and a mounting groove 173 are formed on the left side of the handle 111 of the middle case 2 and the E-cover 4, and the test button 171 is inserted into this hole from the side opening of the middle case 2. It is inserted and rotatably supported by the shaft portion 174. This test button 171 has a fixed arm 173a extending in the rotation direction within the mounting groove 173, and the fixed arm 173a is positioned in the horizontal groove 175 of the mounting groove 173. The protrusion 177 at the tip is elastically locked and fixed, and the test button 171 is pressed.
When rotated to the left with more than a certain force in Figure 7, the protrusion 1
77 climbs over the protrusion 175. A lower end portion 171m of the test button 171 faces the front side of the upper edge of the trig link 109. Therefore, when the test button 171 is rotated, the lower end of the test button 171 pushes the side piece 114 of the trip link 109, causing the trip link 109 to rotate to the right, thereby releasing the engagement with the latch link 64 and performing the tripping operation. .

The option switch 178 is used for external alarms, etc., and is installed in a recess 179 formed on the inner case 2 side between the inner case 2 and the information case 3 with screws 190 as shown in FIG. This recess 179 and the diode 15
6, 157, etc. are located in the electromagnet device 1.
12 and the width space occupied by the mechanism section 78 and node Iv111. Therefore, the side case 3 may be a flat plate, and the width of the entire breaker does not need to be increased. This option switch 178 is connected to the auxiliary terminal 23, and the signal is transmitted from the auxiliary terminal 23 to a predetermined remote location (for example, the management section) via a signal line. On the other hand, a winding part 178b of a link 178a having at least one winding part formed in the central part of the wire rod is supported at the end through which the launch link support pin 88 passes through the inner case;
One end of the link 178a is engaged with the switch lever 191 of the switch 178, and the other end of the link 178a is inserted into an arcuate groove 192 formed in the inner case 2 around the penetrating portion of the pin 88, and the link 64 is inserted into the arcuate groove 192. When the latch link 64 is in the latched state, the switch lever 191 is pressed. The imaginary line in FIG. 8 shows that the latch link 64 has been released from the trip link 109 and rotated, that is, it is in a trip operation state, and the switch lever 191 is restored by the spring action of the switch lever 191, and the switch 1
78 switch contacts are switched. This signal is transmitted to the control room through the signal line.

As a modification, the other end of the link 178a can be engaged with the movable contact 48 without the latch link 64 as shown in FIG. In this case, a predetermined window shall be provided in the corresponding position of the inner case 2. Also, the switch 178 at this time turns on the circuit breaker.

-Become a supporter who informs you of the situation. The information and support are simply links 1788, as shown in FIG. 14A.
This can be achieved by simply changing the shape of 178'a, especially the opening angle, and the other configurations are the same.

The remote control circuit breaker with the above configuration is
Each part is housed in the outer shell A as described above, but the mechanical part 7
8 is an electromagnetic device 44 that operates with instantaneous exception. Bimetal/l
/45 #Movable contact 48. Arc running plate 84. Hand/I/111 and remote control electromagnetic device 112. )! It is housed in the main body case 1 together with the J-tub display device 139 in one block.

i The octopus breaker is attached to the bottom plate 4 of the main body case 1 on the vertical mounting surface.
9 is attached and used. At this time, the dewanger 140 of the operating electromagnet device 112 assumes a horizontal attitude with respect to the ground and operates in the horizontal direction. Furthermore, this remote control type circuit interrupter shows the structure for one pole; in the case of multiple poles, the same structure is installed side by side on the side and caulking pins are installed in the connecting holes 5 to 7. They are connected together by passing them through. In the case of three poles, as shown in Figure 19,
A three-pole upper cover 180t- is used instead of the upper cover 4.
Cover the three circuit breakers to distinguish it from simply three single-pole circuit breakers lined up on a distribution board, etc. Also, only one hole 181 and one Triggess F@ hole 182 are opened each, and the other The handle of the pole has a protrusion that serves as a knob, and the test button 171 has been removed. Further, in the case of multipole, an on-off interlocking rod 183 and a trip interlocking rod 184 are applied for handle interlocking and tri-love interlocking, respectively. The trip linking rod 184 shown in FIG. 20 passes through various through holes 185 formed in the frame 79 inside the intersection of the trip link 109 and the latch link 64 as shown in FIG. Opposed to link 64 1-
A latch link sensing protrusion 186 and a trip link rust protrusion 187 protrude, and both ends thereof are rotatably supported by the side plates of the outer shell A. For example, when an abnormal current flows through a single-pole circuit and a trip occurs, the upper end of the latch link 64 is rotated upward by the spring 127, which pushes the latch link sensing protrusion 186 and rotates to the left as shown in FIG. The tripping protrusion 187 in each type rotates and pushes the trip link 109 in the tl- tripping direction. As a result, the other poles also trip at the same time. On the other hand, the on/off interlocking rod 183
C. A hole 183a is formed at the display plate position of each handle 111 and interlocked with the hole 183a, so that when the handle of one pole is turned on or off by hand or by the electromagnetic device 112, the handle of the other pole is also turned on or off at the same time. I'm looking forward to it. Furthermore, various types of carp tv of the operation electromagnet device 112
147t- are connected in series, the operating terminal 22 is provided for only one pole, and by sending an operating signal to the operating terminal 22, the electromagnetic devices 112 can work simultaneously to perform the same operation.

Next, the operation of this remote control type circuit breaker will be summarized. That is, the on state is shown in FIG. 18 (al) and FIG. 14.

In this case, the latch link 64 is latched to the trip link 109, the handle 111 is tilted to the right, the movable contact 48 is brought into contact with the fixed contact 46, and the plunger 140 of the operating electromagnet device 112 is moved downward and the permanent magnet 149. As described above, for this holding, the hand/I/111 and the movable contact 48 are held in the on position. Note that this on operation is performed using the handle 111.
There are cases in which the plunger 140 is directly operated, and cases in which a signal is sent to the operation terminal 22 to drive the plunger 140 downward.

The off state is shown in FIG. 18(b) and FIG. 15. As before, the latch link 64 is latched, the handle 111 is on the left side, and the movable contact 48 is therefore in the open state. Further, the plunger 140 of the operating electromagnet device 112 is moved to and held at the -E position.

Its working relationship and operation mode are the same as in the on state.

Of the trip states, overcurrent trip is shown in Figure 18 (C1:
I8P and shown in FIG. That is, when an overcurrent flows through the electrical circuit in the on state shown in FIG.
4 rotates. As a result, the movable contact pivot pin 63 moves downward, and since the handle 111 remains held by the plunger 140, the movable contact 47 separates from the fixed contact 46.
The electrical circuit is cut off. As described above, the reset after tripping occurs when the handle 111 is turned to the OFF position from the state shown in FIG. The latch portion 128 is latched to the hook portion 119 of the trip link 109.

Of course, the handle 111 may be moved to the OFF position by inputting signals to the operation terminals 15 and 16 and operating the electromagnetic device 112.

The short circuit trip is shown in Fig. 18 (dJ and Fig. 17). In other words, when it is turned on and a short wire current flows in the electrical circuit, the deresurer 96 of the electromagnetic device 44 closes the fixed iron core 68.
is attracted to. As a result, the movable rod 71 is pushed out and pushes the lower end of the trip link 109 5 and the trip link 1
09 rotates, the latch link 64 is released, and the movable contact 48 performs the opening operation as described above. However, before the movable contact 48 is brought into the M pole due to such link interlocking, that is, at the same time as the plunger 7o operates, the nozzle 97 of the forced opening rod 96 engages with the contact plate 57 and pulls it. The movable contact 47 is separated from the fixed contact 46. That is, just before the latch link 64 is tripped, the contact plate 57 supports the contact pressure applying spring 5 with the pin 60 as a fulcrum.
9 is rotated in the direction of compression to perform an opening operation. The reset operation is the same as described above.

In the cholera trip operation h, when the latch link 64 rotates, the display link 139a rotates, and the trip display plate 139C is positioned on the upper surface of the ON display plate 111b to display a trip display.

〔Effect of the invention〕

As described above, the remote control type circuit breaker of the present invention has the advantage that an option switch can be safely housed with a simple configuration.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a side view thereof, and Fig. 3 is a front view. Figure PC4 is a rear view, Figure 5 is a side view of the main case, Figure 6 is a side view seen from inside the middle case, Figure 7 is a side view with the middle case removed, Figure 8
The figure is a sectional view with the side case removed, Figure 9 is a partially cutaway plan view, Figure 10 is a sectional view taken along the line X-X in Figure 7, Figure 11 is an exploded perspective view, and Figure 12 is a movable contact. FIG. 13 is an exploded perspective view of the operating electromagnet device and handle, FIG. 14 is a sectional view of the on state, and FIG. 14A is a perspective view of the option switch link. 1
Figure 5 is a cross-sectional view of the on state, Figure 16 is a cross-sectional view of the tripped state by the bimetal, Figure 17 is the cross-sectional view of the tripped state by the electromagnetic device, Figure 18 is the operating diagram, and Figure 19 is the 3-pole ground circuit cutoff. FIG. 20 is a perspective view of the trip linking rod, FIG. 21 is a three-wire drive circuit diagram of the operating electromagnet device, and FIG. 22 is a two-wire drive circuit diagram. l...Main salary case, 2...Middle case, 3...Side case, 78...Mechanism part, 88...Bin, 178-...
・Option switch, 179... recess Fig. 1 Fig. 2

Claims (1)

[Claims] A main case with at least one side open; an inner case that is fitted on the negative side to fix the mechanical section housed in the main case; and a predetermined switch accommodation space on the outer surface of the inner case. A remote-controlled circuit breaker with a side case that covers and fixes the inner case.