JPS5816430A - Device for tripping 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 The present invention relates to a circuit such as an overcurrent interrupter or an earth leakage interrupter, and a tripping device for a circuit or interrupter used in an interrupter. It is an object of the present invention to provide a tripping device for a circuit interrupter, which has a circuit that allows a large contact opening W distance.

The following is an explanation of an embodiment of the present invention as an application of the current leakage mode 1141, based on FIGS. 1 to 17. In Figures 1 to 6, reference numeral 1 denotes the earth leakage breaker body, which is composed of a stand 2 and a shell 8, both of which are made of synthetic resin, and which are fixed to each other with a hemlock. Reference numeral 6 is an input terminal device installed at the upper end of the device stand 2, which includes a terminal fitting 7 of the box 1 equipped with a tightening screw 6, and a terminal into which one end of this terminal fitting 7) C is inserted. It consists of a plate 8 and a stopper 9 with a bent piece inserted between the terminal plate 8 and the terminal screw 6, and the other end of the terminal plate 8, that is, FIG. ! In Figure 6, a fixed contact IO is provided at the lower end of C.Then, the terminal device 6 may be inserted into the recess U formed in the device base 2 to avoid misidentification. A nine-contact plate is provided with a movable contact 1 in contact with the same contact m and a movable contact 1 in contact with the positive contact 1 at the free end located at the upper side in FIGS. 8 and 5,
The proximal end 14m of this lower contact plate U is fixed with a fixing screw MIK to the inclined surface t8 formed in the center of the stand 2 where the height of the fixed contact is high, and the movable contact at the free end of the contact plate U is fixed. m is arranged to have a required amount of hesitation between it and the fixed contact m.

In addition, this contact plate is constructed by arranging a number of plates in parallel to have sufficient elasticity, and a force is attached to the movable contact port in the direction of opening from the fixed contact.Of course, both contacts m , the contact pressure of one leap is attached by the original elasticity. U is a bimetal that displaces in response to boiling current and can be installed as an overcurrent detection element, and one end 17 m of the proximal side is a contact plate. The other end yb, which is a free end and serves as an output part as the overcurrent detection element, is perpendicular to the one unit, that is, the eighth In the figure, it extends forward, and in FIG. 6, it extends rightward. Haruka is on stage 8
It is an output terminal device installed at the bottom end of the terminal.It has the same structure as the input terminal device, and a tightening screw is installed as shown in Figure 6. , the terminal board 8 with one end inserted into this terminal fitting te, and the number between this terminal board 8 and the terminal screw 6 [and the stopper 9 into which the bent piece is inserted], and the terminal board 8 has a number of 5 characters. Fold into layers and use the other end as a tableware! In other words, it extends in the direction perpendicular to the figure 111, that is, in the right direction in figure 111. Thus, the terminal device 1 is prevented from coming off by means of the novel tSK fitting body s4ζ provided on the device stand 2. I is a knitted jacket, one end of which is joined to the other end i of the pipe JIA/17, and the other end is joined to the other end of the terminal plate 8 of the terminal device I. Then, the input terminal device 6 is connected to the output terminal device msc electrically via the contact point, the movable contact port, the contact plate, the piping JJI/IF, and the editing wire! 1!11 to form an electric path. With η, the above values are taken as one pole, and the required number of values are arranged horizontally in one machine 2 at regular intervals like MaWA, and the figure is 69. l1
It represents ll. The carp is a braided wire 1) K-coated chain, which provides insulation from other poles. Between the input terminal device and the output terminal device of this device stand 8, there is an electromagnet device in the upper part, that is, the input terminal device 6, a tripping device 3 in the center, and a lower output terminal device on the side. Zero-phase current transformation IIIt14
And the increase width - those detection blocks are placed. First of all, let me explain with reference to the perspective view of the block shown in the first picture, which shows the block of the tikitarirenkitsou placed in the center of this device, and the exploded perspective view shown in Fig. 1. The second center is supported by a support shaft, one of which is used as a handle 271 and protrudes from the window hole 8 of the lid 8, and the other is used as a cam portion vb. 4 is a return spring of the handle 1, which is supported by the support shaft 3. (Material) is a frame body in which a handle 1 and other trip devices are housed, and it is composed of both side plate layers and a bottom plate thickness, and the handle 1 is located between the both side plate layers, and the support shaft is supported. . Therefore, in the case of the 2Wi type of the embodiment, this divine object is located between the two poles, and in the case of the 1718 pole type, it is located directly above the central pole. The feathers are provided on the bottom plate 4 and are attached to the holder 2 through nine screw holes.
The nine fixing screws pass through and are screwed together as shown in Figure 6. E is a partition wall located on both sides of the plate layers on both sides of the frame body, and is formed integrally with the device stand 2, and is intended to be a partition wall between both movable contact plates U. Ta is an elongated cutout provided on both side plates m of the frame body, η is a U-shaped link, and one end Ha is a handle I.
The other end yyb is inserted through the elongated notch xic. Therefore, if the handle l is reversed, the cam portion 27b will be reversed vertically with respect to the support, and the U-shaped 33
The other end of the 9th bear is overturned, but the elongated notch moves back and forth. The connecting portion 37c of the U-shaped sunk cover is covered with an insulating tube 374. The return spring 4 of hend 1v27 has one end fat set in hend A/27 at the 9th recess 311.
The other end is caught on the bent piece I formed on the side plate m of the frame J, so that the hand hlW always acts in the opening direction. The ship has a rocking plate located between the two side plates, and the center is pivoted to the other end wb of the U-shaped 5313 link cover. Therefore, the swinging plate accompanies the movement of the other end vb of the link. 1 is a hole in the cam portion 27b of the end wy through which one end of the link V is inserted, and 2 is a hole in the swing plate attachment through which the other end of the link 1 is inserted. Reference numeral 4 denotes a movable frame having a length of 9 lengths between both contact plates U, and which presses both contact plates U at the same time, and is made of an insulating material. It is located between the two and moves horizontally.

This movable frame 4 slides in a horizontal groove formed on the table 2, and a projecting end 43m formed at the center is held down by the tip of the swing plate. The plate is attached to the protruding end 4 of the movable frame 4 with an auxiliary plate having nine springs, and is tilted from the protruding end 48 in the direction of the rear end 4Db of the rocking plate and in the direction of the table 2. It is composed of an inclined plate 44b having a surface 441 and a side plate 4c that surrounds the bent nine protruding ends of the inclined plate @b. It is supported by both side plates & of the frame body (to) and is pivoted at the 9th pin, and the other end 4bt-* is positioned at the bottom of the other end yb of the bimetal A/17 with the bimetal Il INKI of the pole. are doing.

C is a nine-screw screw mounted on the other end 4b of the tripping frame 4, and adjusts the pitch with the other end 171s of the bime I/%/17 to change the characteristics of the interrupting operation of the tripping device. - is the screw hole into which the screw C is screwed, and the back is the nine receiving stage located in the middle of the it V of the tripping frame 4, and the rear end of the lift plate - rests on it when the hand WV is turned to the on side. be. ω is a bar at the rear end 4ob of the 9-displacement plate provided in the tripping frame area, and the distance between this stopper group and the receiving stage holder is 0. This prevents the rear end @b of the rocking plate from jumping up when the pole is opened.

The group is supported by a pin guide with a spring which always presses the trip plate 4 counterclockwise in FIG. Place it on the tripping frame. FIl is one end 4a of the removable frame fathom where this spring day fits.
K is the recess formed in the center when the other end 4b of the removable frame is made into a U shape, and this @1115B
The handles L are fitted on both sides of the frame J, and the handle L moves within them. The insulating plate interposed between the space Hs of the table window and the frame (9) has the same shape as the side plate cover of the frame (9). Therefore, the above contact point to, i
A tripping device 2 is constituted by the contact plate 14, the contact plate 14, the link slide, the rocking plate, the tripping frame 4, and the like.

Next, a perspective view showing the detection block number ζ of the nine zero-phase current transformers and the width increaser 8125 arranged at the lower part of the device stand 2, that is, the output terminal device wire side 1ζ, and an exploded perspective view shown in FIG. ν are shown. For reference, the above braided wire field is inserted into the dust hole in the center of the zero-phase current transformer 11t24, and when the current that slows down in this braided wire field becomes unbalanced, that is, when a leakage current flows, it becomes zero. Magnetic flux is generated in the annular iron core of the phase current transformer arm, a voltage is generated in the coil J wound around the annular core, and a secondary output is induced. The yoke is its secondary output lead, and this terminal is connected to the increased width hot water temperature. The zero-phase current transformer arm and the amplifier are housed in a synthetic resin box with an opening on the side of the trip device am, and are fixed by enclosing a filler m+c such as, for example, It is fitted into the recess 11K formed between the tripping scissor mounting base of the device stand 2 and the output terminal device as a recess 3c. To explain the specific shape of the parts installed in the box below, the zero-phase current transformer arm is placed in the front of the box group, that is, as shown in Figures 4 to 6, so that the axial direction of the hole is in the vertical direction. In the right side, the upper shoulder wall 62aK is placed in contact with the upper shoulder wall 62aK in the figure σ, and the printed wiring board 68 on which the electronic components are mounted is installed so that the component mounting surface is the zero-phase current transformer arm. To the rear of the box, that is, to the left in Figures 4 to 6,
In FIGS. 16 and 17, it is installed in parallel to the lower peripheral wall 62b. Moreover, a step 68 is provided on the front right side of the box, and a test current warm current resistor 6 is connected to this step 68.
4 in the vertical direction, bend the upper terminal 64m of the resistor 64, and attach it to the lower part (shoulder wall 6111 in front of the skein).
are placed side by side on the right side. 65 is a holding piece formed integrally with the box holder that holds the resistor 64, forming a stepped portion 6$ and a side surface 68m formed at the edge.

118b and this holding piece 66 hold the resistor 64.

K is integrated with the box (to) at the upper and lower ends of the box (to) which has a hole 67 through which the upper terminal 64m of the side wire resistor U is inserted.
Using the formed holding piece, insert the upper terminal 64 of the resistor 64 into the hole 67 of the holding piece 66, and after inserting the lower end holding piece 66, bend the terminal 64 of the resistor 64 to prevent it from coming out. , the space between the holding pieces 66 of this terminal 64m becomes a fixed contact for the test switch. Reference numeral 68 is a movable contact plate for the test switch, and the contact 5681 is inserted from the left into the hole 70 of the holding piece 69 formed at the left end of the peripheral wall eta in front of the box (to), and the holding piece 69 is fitted at this base @ ssb. Along with the base ss
The notch hooking piece SaC formed at b is hooked and fixed to the holding piece 69. Furthermore, this base 68bK connection piece SSC
One end of the lead wire 71 is connected to , the lead wire 71 is inserted through the hole in the arm of the zero-phase current transformer, and the other end is connected to the printed wiring board 6B of the amplifier 3. 72 is a hole in the box W that communicates with the hole group of the zero-phase current transformer. 78 is the test button provided on the lid 8, and is the handle of the lid 8! A lead part 78a is formed at the lower end of the window hole 81 for protrusion, and a lead part 78a is inserted into the nine recesses 74 so as to protrude forward, and a pair of legs having a hook piece at the rear end are inserted into the holes 75 formed at the rear of the recesses 74. Tab is inserted, and by pressing the test button 78, the rear end of the leg 78b approaches the contact portion 68@ of the movable contact plate 68 and comes into contact with the upper terminal 64 of the resistor, and the test switch is closed. It is extreme.

- The test button 78 returns to its original shape due to the restoring force of the movable contact plate 68. 〒6 is a surge absorber that absorbs shock voltage or surge voltage, etc. It is installed internally at the rear of 7 partition walls that are separated by a predetermined space at the step 68 of the C box group. surge absorber 76
One of the lead wires 78 and the power supply lead #I 79 which is electrically connected to the lead wire 71 of the movable contact plate 68, which is drawn out from the printed wiring board 68 of the amplifier, is formed on the partition wall 77 and is connected to the Insert it and pull it out to the bottom of the box, connect the lead wires 8 of the surge absorber 76 to the other ends of the terminal plate 8 of the output terminal device m, and furthermore, connect the lead wires 79 of the increased width hot water temperature with one end to the resistor. lower terminal 64b4 (
Connect the other end to the braided wire conductor and the lead wire 7 of the movable contact plate 68
1 and the hole of the box blade and the hole of the zero-phase current transformer, and insert the drawer stand 2 above the box blade and guide it to the back side. 8G is an insulating plate interposed between the contact plate U, the tripping case M23, and the detection block seal. The other one is in contact with the upper side of the detection block. The zero-phase current transformer, amplifier 3, box I, resistor 64, movable contact plate 68, etc. constitute a detection block.

Next, to explain the electromagnetic device [22] placed on the upper part of the instrument base 2, that is, on the side of the input terminal device M6, with reference to the perspective view shown in FIG. 7 and the exploded perspective view shown in FIG. , a front plate 84 connecting the upper and lower side plates 82 and 88 and the front ends of the side plates 82 and 88, a right side plate 85 hanging backward from the right end of this front plate 84, and a bottom plate whose rear end of the right side plate J is bent. 86
It consists of a support plate 87 bent backward from the left end of this bottom plate 86 and a fixing plate 88 bent from the rear end of this support plate 87. The fixing screw 90 thus formed is screwed together as shown in FIG. 6, and is fixed to a stepped portion 91 formed on the table 2. This stepped portion 91 is the contact point 10 .

It serves to isolate each pole of the mouth. S2 is a coil frame, which is composed of upper and lower side plates 98 and 94 and a strip 95 that connects the upper and lower side plates 98 and 94 at the center. Turn °C. 97 is a nine lead wire connected to the terminal of the coil 96, and 9B is a hole communicating the upper and lower side plates 98 of the coil frame 92, 94 and 1195. So this Koi N frame 92
are attached to the upper and lower side plates 82-88, the front plate 84, the right side plate 85, and the bottom plate 86 of the yoke 81. 99 is a fixed core fixed to the lower plate 88 of the yoke 81; 100 is a movable core corresponding to the fixed core 99; 101 is a return spring interposed between the fixed core 99 and the movable core 100; It is installed in the hole 98 of. Reference numeral 102 denotes an actuating plate, which includes a base 108, a shaft portion 104 extending upward from the rear end of the base 108, and an actuating portion 1 extending downward from the front end.
05: The lower plate 88 of the yoke 81 and the fixed iron core 9
This shaft portion 104 is inserted into a hole 106 passing through the movable iron core Zoo 9 and fixed to the movable iron core Zoo. This fixing method uses the movable core 10
The shaft part 104 is inserted into the hole 107 formed in the hole 107 formed in the hole 107 of the K-x-ri 81 as shown in FIG. I do.

Of course, it may be fixed with screws or caulking. The return spring 101 applies force to the movable core 10G in the direction away from the fixed core 99, causing the base 108 of the actuating portion 105 to move away from the fixed core 99.
When current flows through the carp 96 in a state where it is stopped at the position where it is in contact with the lower plate 88 of the yoke 81, the fixed iron core s9, the lower plate 8B, the front plate 84, and the E side plate 8! A magnetic flux is generated between the movable core 10G and the space between the return spring 101, a magnetic attraction force is generated between the movable core 10G and the fixed core 91, and the movable core 100 is moved toward the fixed core 99 by the spring force of the return spring 101. It can be seen that the actuating plate 102 moves against the opposite direction, and the actuating plate 102 moves accordingly. Also, when the current of carp ~96 is cut off, the return spring 101
With its restoring force, it absorbs the true state 1ζ. Furthermore, the operating portion 105 of the operating plate 1020 corresponds to the other end 45b of the tripping plate of the removing device field in the operating direction 4, and the operating portion 105 of the operating plate 102
By this movement, that is, by pushing it downward, the other end 45b of the tripping frame 45b is operated. 109 is a hole through which the lead wire 97 of the fill 96 formed in the support plate 87 of the yoke 81 is inserted, and 110 is a suppressing piece cut 9 from the lower plate 88 of the yoke 81, which prevents tripping*@swinging of the prisoner. 40m at the tip of the Itakiku
It stops the forward movement of the The lead wire 97 of the coil 96 is inserted through the device stand 2 and guided to the back surface, and one end is connected to the other power lead wire 7s of the amplifier 6.

111 is a tube that insulates this connection. Furthermore, the other end is connected to a fixed contact piece 112 located behind the contact plate 14 and fixed to the instrument stand 2, as shown in FIG. This fixed contact piece 112 is attached to a movable contact plate 118 to which the movable contact IJ side is fixed at the same time as the movable contact 13 is fixed to the contact plate 14.
When the contacts 10 and 13 are closed, this movable contact plate 1
111 contacts the fixed contact piece 112 and closes, and the contact point to
, t3, the movable contact plate 11B separates from the fixed contact piece 112. Therefore, the seal 81, the coil 96,
The electromagnet device 4 is composed of a carp TV frame 92, a fixed iron core I9, a movable iron core 10G, a return spring 101, an operating plate 101, and the like. 114 is the lower terminal 6 of the resistor 64 of the detection block.
4tlK With the lead wire connected at one end, the other end is connected to the other end of the terminal plate 8 of the output terminal device magazine of another maple different from the pole on which the fixed contact piece IB and the movable contact plate 11g are arranged. 116 d Back cover covering recess 116 of device stand 2, 11
7 is the table! This is the mounting hole for the IK-formed earth leakage interrupter.

Next, I will explain the operation of the earth leakage breaker mentioned above. 6 and 6 show the contact 10 in an open state.

The mouth is open. Further, the rocking plate is located on the hand tVV side, that is, on the right side in the figure, together with the link WK. To reverse the above state, as shown in Figures 7 and 8, the handle v1 of the handle τ is reversed upward in the figure, and the handle 1 is rotated counterclockwise in the figure. When this stops, the cam portion 1b is reversed, and the Klnkuma is accompanied by this one! The other end of the link cover xt
b moves the inside of the elongated notch to the 8 sides of the table. Therefore, the oscillating plate pivoted to the other end yrtb tries to move as a whole in the direction of the contact plate U, but the rear end 4ob first hits the receiving stage of the tripping frame 4, and therefore The subsequent movement of the rocking tent will be at the tip (1m only, and this tip -
The movable frame is pushed toward the device stand 2 side, and the contact plate %4%
181, the table is pushed down in two directions.

Therefore, the contact points W and 13 are brought into contact by the movement of the contact plate U, and this state is maintained by positioning one end Ha of the link field beyond the hendl axis swamp at the lower side in the figure.
The contact pressure between O and L3 is applied by the spring force of the contact plate U. Of course, when opening the pole, the gripping force of the hend rvv is reversed downward as shown in Figures 6 and 6, and one end of the link shear (V) crosses the handle axis and is positioned at the upper side in the same figure. By moving the link, the contact plate U returns with its own restoring force to open the contact point 10°l. When the contacts 10 and 13 are connected, the movable contact plate 118 is connected to the fixed contact piece 112, and one lead wire 9 of the coil 96 of the electromagnet device is connected.
7. Coil g6 of electromagnet device η, the other nine lead wires of this coil/I/9g, the other lead wire 79 of amplifier 3, one IJ-do wire 79 of amplifier 2, lead wire 114 It can be seen that a voltage is applied to the amplifier section via. Next, when a leakage occurs in the closed contact state numbers shown in Figures 7 and 8 above, the zero-phase current transformer detects the unbalanced current, and this secondary output is amplified by the amplifier. By short-circuiting the lead wires 79 of the amplifiers and applying current to the coil I%/96 of the electromagnetic device 4, the actuating part 105 of the actuating plate tOW is in the position of the tripping frame, as shown by the chain line in FIG. The other end 4b is struck and pushed. Then, the tripping frame is reversed slightly downward from the state shown in FIGS.
Due to the escape, C comes off, and the rear end 4ob moves all at once toward the instrument stand 2, so on the contrary, the tip 40 moves to the /1nd/I/27 side, that is, to the right in the figure, and releases the suppression of the movable frame 4. The contact plate 14 then returns to its original position by its own restoring force and opens the contacts 10 and 13. At this time, the tip of the swinging temporary attachment comes into contact with the slope ff2h4 of the auxiliary plate M, so the movable frame -
The tip 0 comes off from the protruding end 4B, and the movable frame 4 is pressed by the amount that it comes off, causing the handle to move, and the distance between the contacts to and ia increases. At this time, the movable contact plate 11g is connected to the fixed contact piece 11.
2, the coil Iv9g of the electromagnetic device n, amplifier 3
Stop power supply to etc.

For this reason, an overcurrent prevention type earth leakage valve with the above configuration is used.
- When applying power, if a limb is connected to the input terminal due to a wiring mistake, the same number [If the power supply is connected to the output terminal, even if the power supply is connected to the output terminal, the tripping device will open due to an earth leakage accident and the hot water temperature will increase. 9, and parts such as the amplifier will not be destroyed due to insufficient withstand voltage. Of course, the test button part 8 is in the closed state shown in FIGS. 7 and 8.
When the lead part 78 is pressed to the left in the figure, the movable contact plate 68
contacts the upper terminal 641 of resistor A4 and the lead wire 114
, resistor 64, movable contact plate 68, movable contact plate 68 1
3-do @ 71, the other lead wire 79 of the amplifier 3, the other lead wire 97 of the coil 96 of the electromagnet device 4, this coil 96, the other lead wire 97 of this coil 96, the fixed contact piece 11! ! , a current flows through the movable contact plate 11B to generate an unbalanced current in the zero-phase flow 8124 to test the operation of the earth leakage breaker. In addition, when an overcurrent flows in the open state shown in Figs. 7 and 8 and the bimetal %Iff responds by self-heating, the bimetal %Iff responds by self-heating as shown in Figs. JA/17 is displaced downward in the figure, and at the other end ffb, the tripping frame is reversed clockwise in the same manner as described above, and the rocking plate moves to open the contacts to and is.

After the contacts to and ta are opened, the handle 1 is reversed by the spring force of the return spring 9, and along with this cam part 27b, the other ends b of the C11 link S move inside the elongated cutout part. Hendo s/
Move in 27 directions. Therefore, the swing plate pivotally attached to this other end s7b tries to move as a whole in the direction of the handle I, and its tip 40m moves in the direction of the handle I along the inclined surface 441K of the auxiliary board. It is located between the protruding end of the frame chrysanthemum and the nine restraining piece 110 formed on the yoke 81 of the electromagnet device 4 and stops, and the rear end (1
- It moves along the tripping frame 6 in the direction of the handle I and stops at a position between the stopper ω of the tripping frame 6 and the receiving stage I, and the 6th
It becomes an open state as shown in the figure and M6 figure.

Thus, in the present invention, the tip of the oscillating plate ω comes into contact with the tip of the oscillating plate ω of the movable frame C when the contact is opened for the tripping operation, and the handle l of the oscillating plate ω of the movable frame C comes into contact with the tip of the oscillating plate ω when the contact is opened. Since the auxiliary plate with the inclined surface 44 that slides when returning is installed, the tip 4011 of the oscillating plate will move at the moment the engagement between the receiving stage of the tripping frame and the rear end of the oscillating plate is released. Since the contact distance is wider than the contact distance in the open state by the distance that the contact escapes from the movable frame a, the contact distance during the tripping operation can be made larger even with the same dimensions compared to the case where the auxiliary plate is not used. This has the effect of improving the reliability of the system.

Fig. 1 is a front view, Fig. 2 is a left side view, Fig. 8 is a front view with the lid removed, and Fig. 4 is an A-view diagram showing the open state of Fig. 1. 6 is a B-BIFr sectional view showing the open state in FIG. 1, FIG. 6 is a C-C sectional view showing the open state in FIG. 1, and FIG. 7 is the closed state in FIG. 1. B- indicating polar state
BIlr surface view, FIG. 8 is C-C showing the closed state of FIG. 1.
9 is a BB sectional view showing the tripped state in FIG. 1, and FIG. 10 is a C-C sectional view showing the tripped state in FIG. 1.
Figure i and Figure 4 are perspective views with the tube removed, Figure 4 is a perspective view of the electromagnet device, Figure gta is an exploded perspective view of the electromagnet device, - Perspective view of No. MWJa tripping device, Figure 1 Company matters th
Fig. 16 is an exploded perspective view of at, and Fig. 16 is a perspective view of the detection block.
FIG. 17 is an exploded perspective view of the detection block.

ka--fixed contact, mouth...movable contact, 14-contact plate,
1--handle, cover...-link, ship...-rocking plate,
-Toe tip, 40b-,, rear end, C... movable frame, 4
3a--protruding end, -1 auxiliary plate, 4t...slanted surface, kudzu-
・-Trip frame, 41--One end 4b, --Other end, 41...
- Uedan.

patent applicant Matsushita Electric Works Co., Ltd. Representative Patent Attorney Toshimaru Takemoto (2 others) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 1O No. 1313 Figure 14 5

Claims (1)

[Scope of Claims] 1) A centrally supported raising/lowering handle, which is linked to the handle and is linked to the handle in response to the raising/lowering of the handle. It has a swinging plate that moves, and a receiving stage that engages with the rear end of the swinging plate, with one end serving as a fulcrum and the other end displacing in response to abnormal currents such as leakage currents in the electrical circuit. A tripping frame, a movable frame that moves up and down by °C in response to the tip of the rocking plate, a movable contact linked to this movable frame, and a force applied from the fixed contact to two points in the direction of opening. In a tripping device for a circuit interrupter, the tip of the oscillating plate of the movable frame comes into contact with the tip of the oscillating plate of the movable frame when the contact of the tripping operation is opened. An OIl characterized in that an auxiliary plate having an inclined surface that slides when the handle returns in this tripping operation is attached.
tripping device for circuit interrupters.