JPH0142276Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to a remote control type circuit breaker.

[Background technology]

A remote control type circuit breaker, for example, as in Utility Model Application No. 59-85554, can control a movable contact on and off with a manual handle, and can also control an electromagnet by driving an electromagnet with a remote signal. The movable contact can be turned on and off.

However, with this remote control type circuit breaker, even if the circuit breaker is turned off (on) with a manual handle, it can be turned on (off) by a remote signal, and vice versa. However, it can be turned on (off) using the manual handle. That is,
There is no priority between the handle and the remote switch, and priority is given to the rear operation. Therefore, when disconnecting the remote signal, it was necessary to disconnect the connection on the operating side or install a separate switch to disconnect the operating circuit. For example, in large stores, etc., where automatic operation occurs in the summer and constant use in the winter, the operation cables are regularly removed. It is also possible to install a separate remote switch for switching, but the space on the distribution board is limited and there is no space to install it.

[Purpose of invention]

The idea is to provide a remote controlled circuit disconnector that can switch remotely operated circuits without taking up extra space.

[Structure of the idea]

This invention has a structure in which the main contact is opened and closed by a manual handle and an electromagnetic device, and is tripped by a current detection part, has a main terminal at one end, has rising walls on both sides of the main terminal, and further has a structure in which the main contact is opened and closed by a manual handle and an electromagnetic device, and is tripped by a current detection part. A shingle breaker body having a receiving stage formed above the main terminal on the inside, and a remote control terminal provided on the back side of the receiving stage of the shinning breaker main body and connected to the electromagnetic device. and a remote-off switch having a conductor positioned on the receiving stage and the rising wall and connected to the remote control terminal, and having an external connection terminal.

According to the configuration of this invention, since the remote disconnection switch is provided in the disconnector main body, the remote operation circuit can be switched and there is no restriction on the installation space of the distribution board. In addition, because the remote disconnect switch is placed above the main terminal and in front of the remote control terminal, the remote disconnect switch can be installed in excess space without increasing the size of the circuit or disconnector.
Since the upper part of the main terminal is covered with the remote cut switch, it also serves as a cover for the main terminal, ensuring safety.
Further, since the far-off switch is positioned by the receiving stage and the rising wall and has a conductor connected to the remote control terminal, the far-off switch is easy to attach and detach, and also easy to wire.

An embodiment of this invention is shown in FIGS. 1 to 6. That is, as a whole, a remote disconnect switch B is detachably provided on a circuit disconnector main body A.

First, the circuit and disconnection main body A will be explained.
The details of this circuit and disconnector main body A are given by Jitsuganeaki, for example.
As shown in No. 57-181283, in the figure,
Reference numeral 1 is an outer shell forming the armature or disconnector main body, 2 is a power supply side terminal which is a main terminal connected to the main circuit, 3 is also a load side terminal, and 4 and 5 are remote control terminals. Between the terminals 2 and 3, for example, from the terminal 2, a copper stranded wire 6, a fixed contact plate 7, a fixed contact 8 constituting the main contact, a movable contact 9 constituting the main contact, a movable contact 10, a copper stranded wire 11 , frame F, bimetal 1
5. Copper stranded wire 14, coil 13 of short circuit sensor 12
and then reaches terminal 3. Here, the short circuit sensor 12 operates the plunger 16 in response to a predetermined abnormal current,
Further, the bimetal 15 has a structure that bends and thermally moves in response to a predetermined overcurrent, and constitutes a current detection section C.

The opening/closing/trip mechanism is a trip link 17,
Latch link 18, contact frame 19, interlocking link 2
0, a handle 21, and a bistable electromagnet device 22. The trip link 17 is a fixed shaft 23
bimetal 15 and short circuit sensor 1
The movable rod 16a of the plunger 16 of No. 2 is opposed to the movable rod 16a of the plunger 16, and the return spring (a torsion coil spring supported by the fixed shaft 23, one end of which is engaged with the frame F and the other end of which is engaged with the trip link; not shown) in the opposite direction (FIG. 4) (counterclockwise). Latchlink 18
is pivotally supported by a fixed shaft 25, the hook 26 at the tip faces the locking part 27 of the trip link 17, and the locking direction is controlled by a trip opening spring (consisting of a torsion coil spring similar to the return spring). (clockwise in Figure 4). The contact frame 19 is connected to the latch link 18 by a shaft 29 at its lower end, and connected to the movable contact 10 and the interlocking link 20 by a shaft 30 at its upper end, and further has a contact pressure between it and the movable contact 10 at its upper position. A applying spring 31 is interposed. The manual handle 21 is pivotally supported by a fixed shaft 32, connected to the interlocking link 20 by a shaft 33 at the lower end, connected to the plunger 34 of the electromagnetic device 22 by a link 38 at the projecting part, and is connected to the manual handle by a biasing spring 36. 21 in the clockwise direction. The bistable electromagnetic device 22 has a pair of magnets 37, 37' and a coil 38. The magnets 37, 37' hold the plunger 34 in the upper and lower positions, and when the coil 38 is energized, the plunger 34 is moved in the opposite direction. Driven.

As shown in FIG. 3, the operating circuit for controlling the energization of the coil 38 consists of a polarity changeover switch 40, diodes D ₁ and D ₂ , a remote control switch 41, and an AC power source E (the remote cutoff switch B will be described later). ). Polarity switch 40 and diode
D ₁ and D ₂ are arranged at the imaginary line 47 in FIG. 4, that is, in the space provided in the axial direction of the manual handle 21 of the outer shell 1 of the shredder main body A, and the changeover switch 40 is not shown. is opened and closed by a driver 48 provided on the manual handle 21. Although a general changeover switch is used as the remote control switch 41, it may be a relay, a thyristor, a transistor, or the like. In this circuit, when the remote control switch 41 is switched to contact a, a unidirectional half-wave rectified current flows through the diode D ₁ to the coil 38 and drives the plunger 34 in one direction. 48 moves, the polarity changeover switch 40 operates and the contacts switch to the state shown by the broken line in FIG. 3, opening the circuit and stopping energization.
are held by magnets 37, 37'. When the remote control switch 14 is switched to contact b, a half-wave rectified current flows in the opposite direction through the diode _D2 , causing the plunger 34 and the like to operate in the opposite direction. In this way, the plunger 34 can be operated in two directions.

The manual trip lever 52 is provided on the shredder outer shell 1 adjacent to the manual handle 21. That is, the hole 53 is formed in the breaker main body 1, and the hole 5
A synthetic resin operation button 5 is attached to the bearing portion 54 formed in 3.
5 is inserted in the axial direction and rotatably attached, the lower end 57 of the operation button 55 faces the upper end of the trip link 17, and the upper end of the operation button 55 has a A spring stopper piece 58 extends and has a protrusion 59 at its end. Correspondingly, a groove 60 is formed in the hole 53, and a positioning protrusion 61 is formed at a predetermined position of the groove 60. FIG. 4 shows that the protrusion 59 of the stopper piece 58 of the operation button 55 is connected to the protrusion 6.
1 and has been positioned, and is not in a tripping operation. FIG. 5 shows a state in which the operation button 55 is rotated in the direction of arrow P so that the protrusion 59 of the stopper piece 58 has climbed over the protrusion 61. At this time, the trip link 17 is pressed at the lower end of the operation button 55.
The upper end of the is pressed against the return spring to cause a trip operation. Further, since the protrusion 59 is engaged with the side of the protrusion 61, the operation button 55 maintains its position, that is, the trip link 17 is maintained in the trip state. When it is rotated to the opposite side, that is, to the original position described above, the trip is released.

Next, we will summarize the operation of this remote control type circuit breaker. That is, the on state is shown in FIG. 6a. In this case, the latch link 18 is latched to the trip link 17,
The plunger 34 of the electromagnetic device 22 has been lowered and is held by the magnets 37, 37', so that the movable contact 19 is in contact with the fixed contact 8.

The off state is shown in Figure 6b. As before, the latch link 18 is latched and the plunger 34 is driven upward by the energization of the coil 38 and held by the magnets 37, 37'. Therefore,
The handle 21 rotates to the left from the state shown in FIG. 6a, pulling the interlocking link 20 to the right in FIG. 6a, and the movable contact 10 rotates around the shaft 29 to open the pole.

Among the trip states, an overcurrent trip is shown in FIG. 6c. That is, when the main circuit contacts 8 and 9 are in the ON state and an overcurrent flows through the electrical circuit, the bimetal 15 bends due to self-heating, and then the trip link 17 is pushed and the latch link 18 is released, causing the latch link 18 to rotate. do. As a result, the shaft 29 of the contact frame 19 moves downward, and since the handle 21 remains held by the plunger 34, the movable contact 9 separates from the fixed contact 8, and the electric path is briefly severed. Resetting after a trip occurs when the plunger 34 of the electromagnetic device 22 is moved to the OFF position from that state, and the movable contact 10 is pulled up by the rotation of the handle 21 and the movement of the interlocking link 20, so the latch link 18 is moved to the left. The hook 26 is latched onto the hook 27 of the trip link 17.

The short circuit trip is shown in Figure 6d. That is, in the ON state, when a short circuit current flows through the electric circuit, the plunger 16 of the short circuit sensor 12 is attracted.
As a result, the movable rod 16a is pushed out and pushes the lower end of the trip link 17, and since the trip link 17 rotates, the latch link 18 is released, and the movable contact 19 performs the opening operation as described above. However, before the movable contact 10 is opened by such link interlocking, that is, at the exact same time as the plunger 16 operates, the collar 16b of the forced opening rod extended by the plunger 16 is engaged with the contact 10. The movable contact 9 is separated from the fixed contact 8 by pulling the movable contact 9 away from the fixed contact 8. That is, just before the latch link 18 is tripped, the contact 10 rotates about the shaft 29 in a direction in which it is compressed by the contact pressure applying spring 31, thereby performing an opening operation. The reset operation is the same as described above.

In these tripping operations, when the latch link 18 rotates, the display link 62 moves and the display link 63 rotates, causing the trip display plate 64 to open on the ON display plate 66 formed on the upper surface of the handle 21 and exposed in the window 65. A trip display is displayed on the top surface.

Furthermore, the operation button 55 of the manual trip lever 52
Even if the switch is operated, the same tripping state as described above will occur, and the contacts 8 and 9 will be in the open state. In this trip state, the trip link 17 is maintained in the trip operation state, so even if the handle 21 is turned off or the electromagnetic device 22 is turned off as described above, the hook 26 of the latch link 18 will not catch the trip link 17. It does not get caught in the recess 27 and is not reset. Therefore, remote control switch 4
The contacts (8, 9) will not turn on even if the on/off control is not performed by mistake in step 1, and furthermore, the manual handle 21 operates and the driver 48 operates due to the operation of the electromagnetic device 22, so the polarity is correct. Due to the function of the changeover switch 40, the coil 38 is not constantly energized.

Note that 67 is an arc extinguishing device that extinguishes an arc generated when a short circuit is opened, and 68 and 69 are yokes of the electromagnet device 22. Further, 68 is a cover, and both end pieces 88 formed by thin hinges 87 close the remote control terminals 4 and 5 so as to be openable and closable.

Next, the remote cut switch B will be explained. That is, as shown in FIGS. 1 and 2, three conductors 71 to 73 are arranged in parallel in a case 70, and terminal screws 74 to 76 are provided at one end of each of the conductors 71 to 73.
The other end of 73 extends from the case 70. The intermediate portion of the conductor 73 connected to the common line 79 among the connection lines 77 to 79 of the remote control circuit is separated and the bridging movable contact plate 80 faces the conductor 73 . The movable contact plate 80 is connected to a switch knob 81, and the switch knob 81 is disposed within the case 70 so as to be slidable in the direction in which the movable contact plate 80 approaches and separates. Further, engagement recesses 82 are formed on both side surfaces of the case 70. On the other hand, a locking protrusion 85 is provided on the upper part of a receiving stage 84 parallel to the remote control terminal 5 inside the rising wall 83 at the upper end of the disconnector main body A. Switch B case 70
is supported by the receiving stage 84 and inserted in the direction of the control terminal 5, and the protruding ends of the conductors 71 to 73 are inserted into the remote control terminal 5, and at the same time, the engagement recesses 82 on both sides of the case 70 are engaged. It is locked to the stop protrusion 85. The remote control terminal 5 is connected by opening both end pieces 88 of the cover 86 and tightening the terminal screws. Also, connection line 7
7 to 79 are connected to terminals 74 to 76. This state is shown in the circuit diagram of FIG. Therefore, when the knob 81 of switch B is turned on, the remote switch 41 described above can be operated to turn on and off the breaker body A, while when the knob 81 of switch B is turned off, the remote switch 41 can be operated. Therefore, the main body A becomes in a remote state where it cannot be turned on or off.

With this configuration, the remote control circuit can be easily controlled and is not limited by the installation space of the distribution board. Furthermore, by making the switch B detachable, the breaker main body A can be shared when long-distance cutting is not required.

[Effect of idea]

According to this invention, since the remote disconnect switch is provided in the disconnector main body, the remote control circuit can be switched and there is no restriction on the installation space of the distribution board. In addition, because the remote disconnect switch is placed above the main terminal and in front of the remote control terminal, it is possible to install the remote disconnect switch in excess space without increasing the size of the circuit or disconnector. Since it is covered with a remote cut switch, it also serves as a cover for the main terminal, ensuring safety. Furthermore, since the remote cut switch is positioned by the receiving stage and the rising wall and has a conductor connected to the remote control terminal, the remote cut switch is easy to attach and detach, and is also easy to wire.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of an embodiment of this invention, Fig. 2 is an internal plan view of a remote cut switch, Fig. 3 is a remote control circuit diagram, and Fig. 4 is a sectional view of an embodiment of this invention. , FIG. 5 is a sectional view of the tripped state, and FIG. 6 is an operating diagram. A...Shipping breaker body, B...Distant disconnect switch, C...Current detection section, 2...Power side terminal which is the main terminal, 5...Remote control terminal, 8...Main contact 9...Movable contact constituting the main contact, 21...Manual handle, 22...Electromagnetic device, 71-73...Conductor, 74-76...External connection terminal, 83...Rising wall, 84 ...Ukedan.

Claims (1)

[Scope of utility model registration request] The main contact is opened and closed by a manual handle and an electromagnetic device, and is tripped by a current detection unit. A blade disconnector body having a receiving stage formed on the upper side of the terminal, a remote control terminal provided on the back side of the receiving stage of the blade disconnector body and connected to the electromagnet device, and the receiving stage. A remote control circuit breaker comprising a step and a remote disconnect switch positioned on the raised wall and having a conductor connected to the remote control terminal and having an external connection terminal.