JPH09259730A - Circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost in a circuit breaker having plural auxiliary switches by combining a first vessel to house a main switch and a first auxiliary switch with a second vessel to house a second auxiliary switch. SOLUTION: In a first part 1a of a circuit breaker, a main switch part 2 and a first auxiliary switch 3a are housed in a first vessel. In a second part 1b, a link 51, a switch operation part 52 and a second auxiliary switch 3b are housed in a second vessel. The link 51 is connected to a shaft of a handle 5 as a connecting member by a connecting bar 53. The first and the second vessels are combined with each other. The connecting bar 53 is inserted into a hole of one end part of the link 51, and a pin 54 is inserted into a hole of the other end part of the link 51, and a lower end part of the link 51 and one end part of the switch operation member 52 are rotatably connected to each other. Therefore, the auxiliary switch 3b of the second part 1b can be operated by the handle 5 of the first part 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small circuit breaker (circuit protector) having an auxiliary switch.

[0002]

2. Description of the Related Art A circuit breaker provided with an auxiliary contact is disclosed in, for example, Japanese Patent Publication No. 51-25587. In the circuit breaker disclosed herein, when the main contact separates from the fixed contact in response to the detection of the overcurrent, the auxiliary switch works together to open and close the auxiliary contact. This auxiliary contact is mainly used for alarm.

[0003]

By the way, a plurality of auxiliary switches may be required for one circuit breaker. To meet such demands, Japanese Patent Publication No.
There is provided a first circuit breaker including one auxiliary switch as disclosed in Japanese Patent No. 25587, and a second circuit breaker having a mechanical configuration substantially the same as that of the first circuit breaker. There may be a configuration in which a member for interlocking the handles of the first and second circuit breakers is provided and the current detection coil (electromagnetic coil) is removed from the second circuit breaker. The structure as described above has an advantage that the opening and closing of the second auxiliary switch can be achieved by the same toggle opening / closing mechanism as the first auxiliary switch, but on the other hand, the toggle for operating the second auxiliary switch. Since the opening / closing mechanism has a relatively complicated structure, it has a disadvantage of high cost. The above-mentioned problem also exists in a circuit breaker, that is, a switch, which is manually operated without a mechanism for tripping with a current detection coil.

Therefore, an object of the present invention is to reduce the cost of a circuit breaker having a plurality of auxiliary switches.

[0005]

The present invention for achieving the above object comprises a first container, a main fixed contact and a main movable contact arranged in the first container, and the first container. A movable arm that supports the main movable contact so that the main movable contact can be brought into contact with and separated from the main fixed contact, and the main fixed contact and the main movable contact are manually operated. Whether the voltage or current of the electric circuit, which is for operating the opening and closing and is rotatably supported, and the main fixed contact and the main movable contact, is equal to or higher than a predetermined value A detection device for detecting whether or not the main movable contact is housed in the first container, and the main movable contact is separated from the main fixed contact in response to an operation of the handle, and the main movable contact is provided to the fixed contact. Movable to make contact point contact The handle, the movable arm, and the movable arm so that the main movable contact can be separated from the main fixed contact in response to detection of the predetermined value or more by the detection device. An opening / closing mechanism associated with the detection device, a first auxiliary movable contact, a first auxiliary fixed contact, and a first auxiliary movable contact for opening and closing the first auxiliary movable contact. A first auxiliary switch having an actuator and at least a part of which is housed in the first container, and the first auxiliary switch operates when the main movable contact is separated from the main fixed contact. An interlocking member that associates the movable arm with the first actuator, a second container juxtaposed with the first container, a second auxiliary movable contact, a second auxiliary fixed contact, and the first auxiliary container. 2 assistance A second actuator for opening and closing the second auxiliary movable contact with respect to a constant contact, at least a part of which is housed in the second container, and with respect to the first auxiliary switch. A second auxiliary switch that is juxtaposed, a link that is connected to the handle by a connecting member and is housed in the second container so as to rotate in conjunction with the rotation of the handle, and the link Rotatably connected and the second
Switch operating member having a portion that engages with the second actuator of the auxiliary switch, and the switch operating member so that the switch operating member rotates in a predetermined locus in response to rotation of the link. The switch operating member is provided in the second container and is rotated by the handle so as to separate the main movable contact from the main fixed contact. The present invention relates to a circuit breaker having a turning position limiting member engaged with the switch operating portion so that an auxiliary switch can be operated. As described in claim 2, the current or voltage detecting device and the opening / closing mechanism (trip mechanism) thereby can be omitted. Further, as described in claim 3, the first auxiliary switch can be operated only when the detection device opens and closes (trip operation). It is preferable that the switch operating member has a U-shaped portion as described in claim 4, and the turning position limiting pin is inserted into the groove. Further, as described in claim 5, the switch operating member may have a longitudinal groove. Further, in claim 6, the rotation position limiting portion may be a guide groove provided in the container.

[0006]

According to the invention of each claim, the second aspect
It is possible to operate the second auxiliary switch with a simple and inexpensive structure including the container, the link, the interlocking member, the switch operating member, and the rotation position limiting portion. Further, according to the inventions of claims 4 to 6, the movement range of the switch operating member can be easily set.

[0007]

[First Embodiment] Next, a circuit breaker according to an embodiment of the present invention will be described with reference to FIGS. This circuit breaker consists of a combination of first and second parts 1a, 1b as shown in FIG. The first part 1a is a known circuit breaker including a first auxiliary switch 3a in addition to the main switch part 2. The second part 1b comprises a second auxiliary switch 3b which is interlocked with the first auxiliary switch 3a and is constructed according to the invention.

First, the first portion 1a will be described. Figure 2
FIG. 4 shows the internal structure of the first portion 1a by removing half of the container. Among these, FIG. 2 shows an ON state, FIG. 3 shows a trip operation state, and FIG. 4 shows a manual OFF operation state and a final state of the trip operation. This first part 1
Reference character a indicates that the main switch portion 2 and the first auxiliary switch 3a are housed in the first container 4a made of synthetic resin.
The handle 5 in the main switch unit 2 is manually turned on and off. Reference numeral 6 denotes an electromagnet that responds to an overcurrent, that is, a current detection device. The electromagnet 6 has a coil 8 and a magnetic core 9 supported by a metal frame 7, and the magnetic pole 10 attracts the armature 11. One end of the coil 8 is connected to the first terminal 12, and the other end is a flexible lead wire 8a.
Is connected to the movable arm 13 made of metal. The movable arm 13 made of metal has a main movable contact 14 as one main contact.
The main movable contact 14 selectively contacts the main fixed contact 15 as the other main contact. Since the main fixed contact 15 is connected to the second terminal 16, the two fixed contacts 14,
When 15 is on, the first terminal 12, the coil 8, the lead wire 8a, the arm 13, the main movable contact 14, the main fixed contact 1
An electrical circuit consisting of 5 and the second terminal 16 is formed.

The movable arm 13 is rotatably supported by a fixed shaft 17 supported by the frame 7, and is biased counterclockwise in FIG. 2 by a spring 18 wound around the shaft 17. However, in the ON state of FIG. 2, the arm 13 is pressed in the clockwise direction by the toggle link mechanism 19 provided between the handle 5 and the arm 13, so that the arm 13 is kept in the ON state. The frame 7 is made of a magnetic metal and has a coil mounting portion 7a, an insertion hole 7b for the pin 35, and an insertion hole 7c for the shaft 17, as shown in FIG. Only shown.

The handle 5 has a shaft 20 or boss, as shown in FIG.
Are rotatably supported by bearings 21 of the fixed frame 7 shown in FIG. The toggle link mechanism 19 includes a first link 22 acting as a cam link, a second link 23 acting as a trip mechanism holding link, and a lock pin 24 generally called a shear pin rotatably supported by the second link 23.
An armature engaging piece 25 generally called a strike cover fixed to the lock pin 24; a spring 26 for biasing the lock pin 24 and the engaging piece 25 clockwise;
2 for rotatably connecting the first link 22 to the
7, a pin 28 for rotatably connecting the first link 22 and the second link 23, and the arm 1
3 and a pin 29 rotatably connected to the pin 3.

FIG. 5 showing only the toggle link mechanism 19 and FIG. 6 showing the relationship between the lock pin 24 and the first link 22.
As is apparent from the above, the first link 22 has the cam surface 30 that engages with the pin 24, and the first link 22 is not limited to the pin 24, and the first link 22 can rotate counterclockwise. And a cam surface 31 formed on the
A hole 32 for inserting 7 and a hole 33 for inserting the pin 28 are provided. The lock pin 24 has a circumferential surface 33a that engages with the cam surface 30 of the first link 22, and when the lock pin 24 rotates counterclockwise to be in the locked state, the first link It has a notch surface 34 for allowing the counterclockwise rotation of 22.

The armature 11 shown in FIGS. 2 to 4 is rotatably supported by a fixed shaft 35, and is biased clockwise by a spring 36 wound around the shaft 35. The armature 11 has a trip operating portion 37 for hitting the engaging piece 25 in a counterclockwise direction when the armature 11 is attracted by the magnetic pole 10 and rotates counterclockwise. Note that the shaft 35 is supported by the frame 7, and the frame 7 is fixed to the container 4a.

The first auxiliary switch 3a has two fixed contacts (first auxiliary fixed contacts) 41 and 42, one movable contact (second auxiliary movable contact) 43, and a spring property for supporting the movable contact 43. An arm 44 having a protrusion, a protruding actuator 45 fixed to the spring arm 44, a crank-shaped spring plate actuator 46, and a container 47. The container 47 is shown by a dotted line in FIGS. 2 and 3, and the spring arm 44 shown by a solid line in FIG. 4 is cantilevered by a fixed portion shown by hatching, and is counterclockwise in FIG. It has a biasing force of. This first auxiliary switch 3a is attached to the first container 4a of the main switch. In addition, the crank-shaped actuator 46 as the interlocking member is the movable arm 1
It extends under 3.

Next, the operation of the first portion 1a will be described.
In the ON state of the pair of contacts 14 and 15 shown in FIG.
When an overcurrent flows through the coil 8, the armature 11 is attracted to the magnetic pole 10, the armature 11 rotates counterclockwise in FIG. 2, and the engagement piece 25 rotates counterclockwise against the spring 26. To move.
As a result, the lock pin 24 shown most clearly in FIG. 6 also rotates counterclockwise, and the engagement between the circumferential surface 33a of the lock pin 24 and the cam surface 30 of the first link 22 is released, and the first
The link 22 of can be freely displaced, and the toggle link mechanism 19
Is bent in an inverted shape as shown in FIG.
Force causes arm 13 to rotate counterclockwise, and main movable contact 1
4 separates from the main fixed contact 15. The movable arm 13 is shown in FIG.
When it is displaced as shown in FIG.
Is released, and the spring force of the spring arm 44 of the first auxiliary switch 3a causes it to rotate counterclockwise, so that the first auxiliary movable contact 43 separates from one auxiliary fixed contact 41 and the other auxiliary fixed contact. 42 is contacted to inform the alarm circuit (not shown) of the operation of the main switch unit 2. Handle 5
When the movable arm 13 is returned to the position of FIG. 12 by the operation of, the crank-shaped actuator 46 is pressed clockwise against the biasing force of the spring arm 44, whereby the spring arm 44 also rotates clockwise. The auxiliary movable contact 43 contacts the auxiliary fixed contact 41.

Details of the second portion 1b of FIG. 1 are as shown in FIGS. 8 and 9, and FIGS. 8 and 9 show a state in which a half of the second container 4b constituting the second portion 1b is removed. 1 corresponds to the right side view of FIG. Note that FIG. 8 shows a state corresponding to FIG. 2 in which the main movable contact 14 of the first portion 1a is in an ON state, and FIG. 9 shows a state corresponding to FIG. 4 in which the main movable contact 14 is in an OFF state. .

The second portion 1b is constituted by accommodating the link 51, the switch operating member 52 and the second auxiliary switch 3b in the second container 4b. The second container 4b is substantially the same as the first container 4a with the guide portion of the handle 5 removed, and the first container 4a
Has almost the same external dimensions as.

The link 51 is connected to the shaft 2 of the handle 5 by means of a connecting rod 53 having a hexagonal cross section as a connecting member or connecting means.
Connected to 0. For this connection, an insertion hole for the connecting rod 53 is formed in each of the first and second containers 4a and 4b. The connecting rod 53 is inserted into the hole at one end (upper end) of the link 51, and the pin 54 is inserted into the hole at the other end (lower end) of the link 51.
The lower end of the link 51 and one end (upper end) of the switch operating member 52, that is, the switch operating lever are rotatably connected by the pin 54. Link 51
1 has two legs, each of which has an insertion hole for a pin 54 formed therein. Further, an insertion hole for the pin 54 is also formed in the upper end of the elongated switch operating member 52.

The other end 55 of the long switch operating member 52
Engages the pin 56. The pin 56 is a portion that limits the movement range, that is, the movement trajectory of the long switch operation member 52, and is fixedly supported by the second container 4b. A U-shaped groove 57 is formed in the other end 55 of the switch operating member 52, and a pin 56 is inserted into the groove 57. An auxiliary switch engagement surface 58 is provided at the other end 55 of the switch operating member 52. This engaging surface 58 is provided on the second auxiliary switch 3b as shown in FIG. 8 when the main switch is on.
It is formed so as to press the protruding actuator 59. Further, the engagement surface 58 is, as shown in FIG. 8, the second auxiliary switch 3b when the second auxiliary switch 36 is operating.
Is parallel to the upper surface of the actuator and stably presses the actuator 59. The most protruding portion 60 below the switch operating member 52 is formed so as to be able to enter between the container 4b and the second auxiliary switch 3b, and prevents the position of the switch operating member 52 from changing. In addition to having a function, the switch operating member 5 is connected to the pin 56.
It also has the function of preventing 2 from coming off.

The second auxiliary switch 3b corresponds to the crank-shaped actuator 46 from the first auxiliary switch 3a shown in FIGS.
Projector actuator 5 which is the same as the one without
In addition to 9, two fixed contacts (second auxiliary fixed contact) 6
1, 62, common movable contact (second auxiliary movable contact) 6
3. A spring arm 64 supporting the movable contact 63 and a container 65 are provided. When the actuator 59 is pressed, one auxiliary fixed contact 61 is turned on, and conversely the other auxiliary fixed contact 62 is turned off. Is configured.

The second portion 1b is the terminal 1 of the first portion 1a.
It has mounting legs 66 and 67 having a shape similar to those of Nos. 2 and 16. The mounting legs 66 and 67 have nothing to do with the electric circuit.

When the handle 5 of the first portion 1a is in the on position as shown in FIG. 2, the link 51 of the second portion 1b is in the position of FIG. That is, in FIG. 8, the link 51 extends in the vertical direction.
As a result, the switch operating member 52 is pushed down by the link 51, the actuator 59 is pushed by the engagement surface 58, one auxiliary fixed contact 61 is on, and the other auxiliary fixed contact 62 is off. . At this time, since the connecting rod 53 and the two pins 52 and 56 are located on a substantially straight line, the link 51 and the switch operating member 5
2 remains relatively stable.

When the handle 5 of the first portion 1a is in the off position shown in FIG. 4, the link 51 of the second portion 1b is interlocked to rotate to the position shown in FIG. That is, the link 51 rotates counterclockwise from the position shown in FIG. As a result, the switch operating member 52 is pulled up and rotated in the clockwise direction around the pin 56. As a result, the pressing of the actuator 59 by the engagement surface 58 of the switch operating member 52 is released, the other auxiliary fixed contact 62 of the second auxiliary switch 3b is turned on, and the one auxiliary fixed contact 61 is turned off.

According to this embodiment, the second auxiliary switch 3b can be operated with a simple structure in which the link 51, the switch operating member 52, the connecting rod 53, and the pins 54 and 56 are added. Therefore, the same auxiliary opening / closing mechanism 22 as the first part 1a is used for the second auxiliary switch 3
The cost can be reduced as compared with the conventional circuit breaker that operates b. The second auxiliary switch 3b is housed in a container 4b similar to the container 4a of the first portion 1a to which the first auxiliary switch 3a is attached, and since the two containers 4a and 4b are juxtaposed, Not only does it have a good appearance, but it can be easily attached to an external device (not shown). In addition, the U-shaped groove 57 and the pin 56 as a guide member.
Since the range of movement of the switch operating member 52 is limited by the engagement with, the range of movement of the switch operating member 52 can be set accurately. In addition, the switch operating member 52 has two
Since the leg portion 60 is provided and inserted between the container 4b and the second auxiliary switch 3b, the position of the switch operating member 52 can be stably maintained.

[0024]

[Second Embodiment] Next, a circuit breaker of a second embodiment will be described with reference to FIGS. 1 to 9 showing the first embodiment in the drawings showing the second embodiment and the third, fourth, and fifth embodiments and modifications which will be described later.
The same reference numerals are given to the same parts as those described above, and the description thereof will be omitted. The circuit breaker of the second embodiment is substantially the same as that of FIGS. 1 to 9 except that the switch operating member 52 of the circuit breaker of FIGS. 1 to 9 is modified to a switch operating member 52a shown in FIGS. It has the same configuration. The switch operating member 52a is formed in a skirt-like shape and has a long groove 57a in which the pin 56 is inserted. FIG. 10 shows FIG.
11 shows the state when the handle 5 is on, and FIG. 11 shows the state when the handle 5 is off, like FIG. The circuit breaker of the second embodiment has the same effects as the first embodiment.

[0025]

[Third Embodiment] The circuit breaker of the third embodiment shown in FIG. 12 is the first embodiment except that a handle 5a is added to the second portion 1b of the first embodiment shown in FIGS. The configuration is similar to the example. The handle 5a of the second portion 1b is the link 5
4 and is connected to the handle 5 of the first portion 1a by a connecting rod 53a. The link 54 has two connecting rods 53 for the handle 5 of the first portion 1a,
Since they are connected by 53a, the mutual connection is stable and the manual operation becomes easy.

[0026]

[Fourth Embodiment] The circuit breaker of the fourth embodiment shown in FIGS. 13 and 14 is a modification of the first portion 1a of the circuit breaker of the first embodiment shown in FIGS. Other than that, the configuration is the same as that of the first embodiment. The first portion 1c shown in FIGS. 13 and 14 is the same as the first portion 1a of the first embodiment shown in FIG. 2 except that the current detecting device 6 composed of an electromagnet and the trip actuation mechanism based thereon are removed. It has the same configuration as 2. That is, the first portion 1c of FIG. 14 is configured to turn on / off the contacts 14 and 15 only by manually operating the handle 5. Also in the circuit breaker of FIGS. 13 and 14, the first and second auxiliary switches 3a and 3b are provided in the same manner as in the first embodiment, so that the main contact 14,
The first and second auxiliary switches 3a and 3b are operated in association with the turning on / off of the switch 15, and the same effect as that of the first embodiment can be obtained.

[0027]

[Fifth Embodiment] FIG. 15 shows a first portion 1d of a circuit breaker according to a fifth embodiment. The circuit breaker of the fifth embodiment is the first portion 1a of the circuit breaker of the first embodiment shown in FIGS.
Only the second part 1b is modified, and the second part 1b has the same structure as that of the first embodiment. First part 1d of the fifth embodiment
Is a modification in which a trip interlocking lever 70 is added to the first portion 1a of the first embodiment shown in FIG. 2 and the lever 70 is selectively locked in a locking hole 71 provided in the actuator 46. Other than that, the configuration is similar to that of FIG.

The first portion 1d of Japanese Patent Publication No. 51-25587
The circuit breaker disclosed in the publication has the same basic configuration, and an overcurrent is detected by a current detecting device 6 composed of an electromagnet, and the armature 11 engages with the armature engaging piece 25 to trip. The first auxiliary switch 3a operates only when the main contacts 14 and 15 are turned off by operation, and the first auxiliary switch 3a is operated when the main contacts 14 and 15 are turned off by manually operating the handle 5. It is configured to not work.

The lever 70, as shown in FIG.
It is rotatably supported by a fixed shaft 72 supported by a. The upper end portion 70 a of the lever 70 is arranged in the passage of the engagement piece 25. The path of the engaging piece 25 is the main contact 1
When turning off 4 and 15 by trip operation, and handle 5
Different when turning off by manual operation. In this embodiment, the lever 70 is selectively operated by utilizing the difference in the passage of the engaging piece 25. The lower end portion 70b of the lever 70 has a locking step 70
c is provided. The lever 70 is biased counterclockwise in FIG. 16 by a spring 73. Therefore, when the lever 70 is pressed clockwise by the engagement piece 25 against the bias of the spring 73, the lever 70 rotates clockwise, and
As shown in FIG. 7, the portion 70d above the step 70c enters the locking hole 71. That is, since the actuator 46 composed of the spring plate has a biasing force in the upward direction, that is, the counterclockwise direction in FIG. 15, the engagement between the edge of the hole 71 of the actuator 46 and the step portion 70c of the lever 70 is released. Then, the actuator 46 rotates counterclockwise by the force of its own spring,
The first auxiliary switch 3a is in the same operating state as in FIG.

When the handle 5 is operated to return the OFF state of the main contacts 14 and 15 to the ON state, the movable arm 13 rotates in the clockwise direction in FIG. 15, and the lower left end of the movable arm 13 is the actuator 46. Is pressed to return the actuator 46 and the lever 70 to the positions shown in FIG. FIG.
When the handle 5 is turned off in this state to manually turn off the main contacts 14 and 15, the lever 70 is not pressed by the engaging piece 25, so that the lever 70 is held in the locked state of FIG. The auxiliary switch 3a does not operate, and only the second auxiliary switch 3b shown in FIG. 1 operates.

In the fifth embodiment, the first auxiliary switch 3
It operates only when the main contact 14, 15 is turned off by tripping a. On the other hand, the second auxiliary switch 3b operates both when the main contacts 14 and 15 are turned off by the trip operation and when they are manually turned off. Therefore, it is possible to determine the factor of turning off the main contacts 14 and 15 based on the operating states of the first and second auxiliary switches 3a and 3b, that is, the output signals. That is, the first and second auxiliary switches 3
When both a and 3b operate, it is a trip operation,
When only the second auxiliary switch 3b is activated, it is manually turned off. Therefore, the fifth embodiment has an effect that the first and second auxiliary switches 3a and 3b having different functions can be operated with a simple structure.

[0032]

[Modifications] The present invention is not limited to the above-described embodiment, and for example, the following modifications are possible. (1) A leaf spring or resin actuator 46a similar to the crank-shaped actuator 46 of the first auxiliary switch 3a is added to the second auxiliary switch 3b shown in FIG. 18, and this actuator 46a is pressed by the switch operating member 52. By doing so, the second auxiliary switch 3b can be brought into the same state as in FIG. Further, the actuators 46 and 46a may be rotation levers supported by shafts. (2) In FIG. 12, the connection of the link 51 to the handle 5 by the connecting rod 53 may be omitted, and instead of the connecting rod 53, a shaft for rotatably supporting the link 51 may be provided at this position. (3) The toggle link mechanism 10 can be replaced with another one having a similar function. (4) The present invention can be applied to a case where three or more auxiliary switches are provided. In this case, it is desirable to arrange the same structure as the second portion 1b in FIG. 1 on the left side of the first portion 1a in FIG. (5) As shown in FIG. 19, the connecting rod 53 can be integrally formed with the link 54 by a resin mold. (6) Instead of the pin 56 of FIG. 1 in the second portion 1b, a protrusion 90 may be provided as shown in FIG. 20, and the groove 57 may be provided with a guide groove 91 in the container 4b.

[Brief description of drawings]

FIG. 1 is a front view showing a circuit breaker of a first embodiment with a part thereof cut away.

FIG. 2 is a side view showing the inside of the first portion of FIG. 1 in a switch-on state.

FIG. 3 is a side view showing the inside of the first portion of FIG. 1 in an intermediate state of trip operation.

FIG. 4 is a side view showing the inside of the first portion of FIG. 1 in a trip operation and an off state by manual operation.

5 is a perspective view showing the toggle link mechanism of FIG. 2. FIG.

FIG. 6 is an enlarged front view showing the relationship between the first link and the lock pin of FIG.

FIG. 7 is a front view showing the frame of FIGS.

FIG. 8 is a right side view showing the inside of the second portion of FIG. 1 with the main switch turned on.

9 is a right side view showing the inside of the second portion of FIG. 1 with the main switch turned off. FIG.

FIG. 10 is a side view showing a part of a second portion of the circuit breaker of the second embodiment with the main switch turned on.

11 is a side view showing a part of the same portion as FIG. 10 in a state where a main switch is off.

FIG. 12 is a front view showing the circuit breaker of the third embodiment, similar to FIG.

FIG. 13 is a front view showing the circuit breaker of the fourth embodiment, similar to FIG.

FIG. 14 is a side view showing a first portion of the fourth embodiment with a part thereof omitted.

FIG. 15 is a side view showing a first portion of the fifth embodiment with a part thereof omitted.

16 is a side view showing a part of the first portion of FIG. 15 in a non-trip state.

FIG. 17 is a side view showing a part of the first portion of FIG. 15 in a trip state.

FIG. 18 is a side view showing a part of a second portion of the modified example.

FIG. 19 is a front view showing a link of a modified example.

FIG. 20 is a partially cutaway front view showing a switch operation member and a part of a container of a modified example.

[Explanation of symbols]

 1a, 1b 1st and 2nd parts 3a, 3b 1st and 2nd auxiliary switch 5 Handle 51 Link 52 Switch operation lever 53 Connecting rod

Claims (6)

[Claims] 1. A first container, a main fixed contact and a main movable contact arranged in the first container, and the main movable contact housed in the first container with respect to the main fixed contact. A movable arm that supports the main movable contact so that the main movable contact can be freely contacted and separated, and is used to operate opening and closing of the main fixed contact and the main movable contact by a manual operation. A supported handle; a detection device for detecting whether or not a voltage or current of an electric circuit connecting the main fixed contact and the main movable contact has reached a predetermined value or more; The movable arm is housed in a container, and the movable arm is rotated so as to separate the main movable contact from the main fixed contact and bring the main movable contact into contact with the main fixed contact in response to an operation of the handle. In addition to the An opening / closing mechanism associated with the handle, the movable arm, and the detection device so that the main movable contact can be separated from the main fixed contact in response to detection by the device of the predetermined value or more; An auxiliary movable contact, a first auxiliary fixed contact, and a first actuator for opening and closing the first auxiliary movable contact with respect to the first auxiliary fixed contact, and at least a part of the first movable contact is provided. The first auxiliary switch housed in the container and the movable arm and the first actuator so that the first auxiliary switch operates when the main movable contact is separated from the main fixed contact. The attached auxiliary member, the second container juxtaposed to the first container, the second auxiliary movable contact, the second auxiliary fixed contact, and the second auxiliary fixed contact with respect to the second auxiliary. Open movable contact A second auxiliary switch having a second actuator for operating at least a part of which is housed in the second container and juxtaposed with the first auxiliary switch; A link that is connected to the handle and is housed in the second container by a connecting means so as to rotate in association with the rotation; and a link that is rotatably connected to the link and that includes the second auxiliary switch. A switch operating member having a portion that engages with the second actuator, and a movement range of the switch operating member so that the switch operating member rotates in a predetermined locus in accordance with rotation of the link. The switch operating member is provided in the second container, and when the handle is rotated so as to separate the main movable contact from the main fixed contact, the switch operation member moves forward. Circuit breaker with a rotational position restriction portion engaged with the switch operating member to be able to operate the second auxiliary switch, the. 2. A first container, a main fixed contact and a main movable contact arranged in the first container, and the main movable contact housed in the first container with respect to the main fixed contact. A movable arm that supports the main movable contact so that the main movable contact can be freely contacted and separated, and is used to operate opening and closing of the main fixed contact and the main movable contact by a manual operation. A supported handle and the main container, which is housed in the first container, separates the main movable contact from the main fixed contact in response to an operation of the handle, and contacts the main movable contact with the main fixed contact. An opening / closing mechanism provided between the handle and the movable arm so that the movable arm can be rotated so that the first auxiliary movable contact and the first auxiliary fixed contact are provided. For fixed contacts, the first A first actuator for opening and closing the auxiliary movable contact of at least a part of which is housed in the first container, and the main movable contact is separated from the main fixed contact. An interlocking member that associates the movable arm with the first actuator so that the first auxiliary switch is actuated when the first auxiliary switch is activated, a second container juxtaposed with the first container, and a second auxiliary A movable container, a second auxiliary fixed contact, and a second actuator for opening and closing the second auxiliary movable contact with respect to the second auxiliary fixed contact, and at least a part of the second container. A second auxiliary switch that is housed in the first auxiliary switch and is juxtaposed with the first auxiliary switch, and is connected to the handle by a connecting means so as to rotate in association with the rotation of the handle, and First A link housed in the container, a switch operating member that is rotatably connected to the link, and has a portion that engages with the second actuator of the second auxiliary switch; The moving range of the switch operating member is restricted so that the switch operating member rotates in a predetermined locus in response to the rotation, and the switch operating member is provided in the second container and is connected to the main fixed contact from the main fixed contact. A rotation position limiting portion engaged with the switch operation member so that the switch operation member can operate the second auxiliary switch when the handle is rotated so as to separate the movable contact; Circuit breaker with. 3. A first container, a main fixed contact and a main movable contact arranged in the first container, and the main movable contact housed in the first container with respect to the main fixed contact. A movable arm that supports the main movable contact so that the main movable contact can be freely contacted and separated, and is used to operate opening and closing of the main fixed contact and the main movable contact by a manual operation. A supported handle; a detection device for detecting whether or not a voltage or current of an electric circuit connecting the main fixed contact and the main movable contact has reached a predetermined value or more; The movable arm is housed in a container, and the movable arm is rotated so as to separate the main movable contact from the main fixed contact and bring the main movable contact into contact with the main fixed contact in response to an operation of the handle. In addition to the An opening / closing mechanism associated with the handle, the movable arm, and the detection device so that the main movable contact can be separated from the main fixed contact in response to detection by the device of the predetermined value or more; Auxiliary movable contact and a first auxiliary fixed contact, and a first actuator for opening and closing the first auxiliary movable contact with respect to the first auxiliary fixed contact, and at least a part of the first movable contact. A first auxiliary switch housed in a container; and the first movable switch when the opening / closing mechanism operates to separate the main movable contact from the main fixed contact in response to detection of the predetermined value or more by the detection device. Of the movable arm and the first actuator so that the first auxiliary switch does not operate when the opening / closing mechanism is operated by manual operation of the handle. And a second container juxtaposed to the first container, a second auxiliary movable contact, a second auxiliary fixed contact, and the second auxiliary fixed contact with respect to the first auxiliary container. A second actuator for opening and closing two auxiliary movable contacts, and at least a part of which is housed in the second container and juxtaposed with the first auxiliary switch. An auxiliary switch, a link connected to the handle by a connecting means so as to rotate in association with the rotation of the handle, and housed in the second container, and rotatably connected to the link. A switch operating member having a portion that engages with the second actuator of the second auxiliary switch; and the switch operating member that rotates in a predetermined locus in response to rotation of the link. Switch operation part The switch operating member is provided in the second container and is rotated by the handle so as to separate the main movable contact from the main fixed contact. A circuit breaker, comprising: a rotation position limiting portion engaged with the switch operating member so that an auxiliary switch can be operated. 4. The rotation position limiting portion is a pin supported by the second container, the switch operating member has a U-shaped portion, and the pin is provided in a groove of the U-shaped portion. 5. The circuit breaker according to claim 1, wherein one end surface of the U-shaped portion is formed so as to engage with the second actuator. 5. The rotation position limiting portion is a pin supported by the second container, the switch operating member has a longitudinal groove, and the pin is inserted into the groove. The circuit breaker according to claim 1, 2, or 3. 6. The rotation position limiting portion is a guide groove provided in the second container, and the switch operating member is a protrusion inserted in the guide groove. Alternatively, the circuit breaker according to 2 or 3.