JPH0574315A - Breaker - Google Patents

Abstract

PURPOSE:To selectively mount a breaking mechanism unit and a remote switch mechanism unit so as to easily manufacture a breaker and a remote-controlled relay of the same shape by providing containers for the breaking mechanism unit and remote switch mechanism unit respectively inside a housing, and interposing separative fixed contacts between the containers. CONSTITUTION:A container for a breaking mechanism unit A and a container for a remote switch mechanism unit B are housed inside a housing 10. A fixed contact plate is interposed between a movable contact piece 3 and remote contact piece 5 of the mechanism unit A. A fixed contact 42 for a movable contact 41 fixed to the contact piece 3 and a remote fixed contact 43 for the contact piece 5 are secured to the obverse and reverse of the fixed contact plate. Consequently, it is possible to easily manufacture, in the same dimension, a breaker provided with only the mechanism unit A, a remote-controlled relay provided with only mechanism unit B or a contact breaker provided with both the mechanism units A, B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shut-off mechanism section for shutting off an electric circuit in conjunction with the operation of a steering wheel or the operation of an abnormal current detecting section, and a remote opening / closing for closing and shutting off the electric path in response to a remote control signal. The present invention relates to a breaker that selectively mounts a mechanical section.

[0002]

2. Description of the Related Art A contact breaker is an example of a breaker. In this contact breaker, a disconnection mechanism unit that disconnects the electric path in conjunction with the operation of the handle or the operation of the abnormal current detection unit, and a remote opening / closing mechanism unit that closes and interrupts the electric path according to a remote control signal are provided. The movable contact fixed to the movable contact that rotates according to the operation of the breaking mechanism and the remote contact fixed to the remote contact that rotates according to the operation of the remote opening / closing mechanism are separated from each other. As a result, the circuit was closed and cut off.

[0003]

By the way, the breaker having only the function of the breaking mechanism of the contact breaker and the remote control relay having only the function of the remote opening / closing mechanism are conventionally referred to as the contact breaker. It was designed and manufactured separately. By the way, in this type of contact breaker, breaker and remote control relay, the shape and size of the housing may be standardized so that the housing can be integrally attached to a distribution board or the like. In such a case, it is wasteful to separately design and manufacture the contact breaker, the breaker, and the remote control relay.

The present invention has been made in view of the above points, and it is an object of the present invention to easily manufacture a contact breaker, a breaker and a remote control relay having a housing of substantially the same shape and size. To do.

[0005]

In order to achieve the above object, the present invention responds to a remote control signal and a shutoff mechanism section that shuts off the electric path in conjunction with the operation of the steering wheel or the operation of the abnormal current detection section. A housing for accommodating a remote opening / closing mechanism for closing and breaking the electric circuit as needed is provided in the housing respectively, and a fixed contact for contacting and opening a movable contact fixed to a movable contactor of the breaking mechanism, A fixed contact plate fixed to the front and back sides of a remote movable contact fixed to a remote contact of the remote opening / closing mechanism section and a remote fixed contact for opening and closing are arranged between the respective storage sections.

[0006]

The present invention has the above-mentioned configuration,
A disconnecting mechanism section and a remote opening / closing mechanism section can be selectively mounted, and a contact breaker, a breaker, and a remote control relay having a housing of substantially the same shape and size can be easily manufactured.
Since only the breaking mechanism part and the remote opening / closing mechanism part are selectively mounted, it is possible to eliminate the need to individually design the contact breaker, the breaker and the remote control relay.

[0007]

1 to 4 show an embodiment of the present invention. First, the overall configuration and operation of the contact breaker will be briefly described. The housing 10 of this contact breaker
As shown in FIG. 1A, a rectangular box-shaped power supply terminal 25 for connecting a power supply line, a load terminal 9 for connecting a load line, and a remote input terminal 26 for connecting a signal line for inputting a remote control signal. Are arranged at both ends of the housing 10, respectively. Each terminal 26 is a screw terminal.

A handle 1 is projected from the upper surface of the housing 10, and when the handle 1 is rotated to the solid line state in FIG.
The movable contactor 3, to which is fixed, rotates counterclockwise. Further, when the handle 1 is rotated clockwise, the movable contact 3 is rotated clockwise. In this contact breaker, an abnormal current detection unit 2 is configured by an overcurrent detection unit that uses a bimetal 21 that detects an overcurrent and a short circuit current detection unit that uses an electromagnet device 22 that detects a short circuit current.

Here, the bimetal 21 is deformed toward the breaking mechanism portion A side when an excessive load current flows, and presses the upper part of the latch link 13 of the breaking mechanism portion A to break the breaking mechanism portion A.
Trip operation. When a short-circuit load current flows through the coil 11, the electromagnet device 22 pulls the output shaft 12 to the left side in FIG. 2 and forcibly moves the movable contact 3 counterclockwise at the tip of the output shaft 12. At the same time, the lower end of the latch link 13 of the breaking mechanism unit A is pushed leftward in the drawing by the base end of the output shaft 12 (not shown) to trip the breaking mechanism unit A.

Although the detailed structure of the shutoff mechanism portion A is not shown, when the latch link 13 is rotated clockwise by the bimetal 21 or the electromagnet device 22 as described above, the tripping by the latch piece of the latch link 13 occurs. The latched state with the link is released, and the return force of an opening spring (not shown) causes the trip link and the coupling link 16 that couples the trip link with the movable contact 3.
Is driven, and the breaking mechanism unit A trips. At this time, the movable contactor 3 rotates clockwise as shown by the broken line in FIG.

When the shutoff mechanism A trips as described above, the handle 1 is returned clockwise by a return spring (not shown). However, when the handle 1 is rotated by the return spring at this time, the handle 1 is in a neutral state (see FIG.
It has a structure that stops when standing upright.
It should be noted that when the handle 1 in the neutral state is rotated clockwise so as to be fully tilted, the shutoff mechanism portion A is reset, and when the handle 1 is rotated so as to be fully counterclockwise tilted, the shutoff mechanism is generated. Part A is set.

Next, the remote opening / closing mechanism section B is an electromagnet device 6 which operates bistable in response to a remote control signal.
And a remote contactor 5 which is connected to the electromagnet device 6 via a drive plate 7 and is rotationally driven. Here, the upper end of the remote contactor 5 and the hanging piece 7a of the drive plate 7
A contact pressure spring 8 for applying a contact pressure to the remote movable contact 44 fixed to the remote contact 5 is interposed between and. The remote contactor 5 is supported by the drive plate 7 so as to be freely movable in a seesaw motion.

Now, when a remote control signal for cutting off the electric path is inputted to the electromagnet device 6, the movable iron core 6a of the electromagnet device 6 moves upward, whereby the drive plate 7 moves counterclockwise about the shaft 7a as a fulcrum. The remote contact 5 which is rotated and fixed to the drive plate 7 is rotated counterclockwise as indicated by a broken line in FIG. On the contrary, when a remote control signal for closing the electric circuit is sent, the movable iron core 6a moves downward, and the driving plate 7 is rotated by the contracting force of the return spring 20 in the clockwise direction opposite to the above case, The remote contactor 5 also rotates clockwise.

By the way, in this contact breaker, a display device 5 for displaying the open / closed state of the electric circuit by the remote operation is provided.
0 is provided, and the display piece 5 that rotates with the rotation of the drive plate 7 from the display window 51 formed on the upper surface of the housing 10.
The remote control state can be identified by looking at 1a. The structure of the contact portion, which is a feature of this contact breaker, will be described below. In the contact breaker of this embodiment, the movable contactor 3 and the remote contactor 5 are
A fixed contact plate is interposed between the fixed contact 42 and the movable contact 41 fixed to the movable contactor 3, and the remote movable contact 44 fixed to the remote contactor 5 is opened and closed. The fixed contacts 43 are fixed to the front and back of the fixed contact plate. In this embodiment, the arc traveling plate 17a of the arc extinguishing device 17 is used as the fixed contact plate to make space effective. Here, the arc extinguishing device 17 extinguishes an arc generated when the movable contact 41 and the fixed contact 42 are separated.

Therefore, the electric path inside the contact breaker includes the power supply terminal 25 and the coil 22 of the electromagnet device 22.
a, a bimetal 21, a conductive frame 24 in which the above-mentioned members of the breaking mechanism portion A are incorporated, a movable contact 3, a contact 4 (movable contact 41, fixed contact 42, arc traveling plate 17a, remote fixed contact 43). , Remote movable contact 4
4), formed by the path of the remote contact 5 and the load terminal 9. The members that are not in contact with each other in the electric path are connected by a braided wire 28 or the like. A signal line for giving a remote control signal to the remote opening / closing mechanism B is connected to a remote input terminal 26, and the input terminal 26 and the coil 6b of the electromagnet device 6 are connected by a lead wire 27.

By the way, as described above, the arc traveling plate 17 is used.
By interposing a between the movable contact 41 and the remote contact 44, the substantial insulation distance between the movable contact 41 and the remote contact 44 can be increased. When the fixed positions of the fixed contacts 42 and 43 fixed to the arc traveling plate 17a are vertically displaced, the directions of the currents flowing through the movable contactor 3 and the arc traveling plate 17a are turned upside down. Therefore, a magnetic repulsive force is generated between the movable contact 41 and the fixed contact 42, and the separating operation between the movable contact 41 and the fixed contact 42 can be favorably performed.

Moreover, in the case of this embodiment, the movable contact 3
Since the direction of the current flowing between the remote contactor 5 and the remote contactor 5 is also opposite, a magnetic repulsive force for rotating the remote contactor 5 counterclockwise is generated when the load is short-circuited, which causes the movable contact 41 to open when the load is short-circuited. At the same time that the fixed contact 42 is opened, the remote fixed contact 43 and the remote movable contact 44 are also opened. Therefore, the insulation distance is increased and the movable contact 41 is increased as described above.
By increasing the magnetic drive of (1) and cooperative operation when the remote movable contact 44 is short-circuited, it is possible to realize the high current limiting interruption performance of the contact breaker.

Further, as described above, the arc traveling plate 17a
The movable contact 4 between the movable contact 3 and the remote contact 5.
If the fixed contacts 42 and 43, which the 1 and 44 respectively contact, are separately provided, it is possible to select any contacts according to the required characteristics on the breaking mechanism section A side and the remote opening / closing mechanism section B, and there is an advantage that the quality is stable. can get. By the way, the arc traveling plate 17a
The fixed portion of the fixed contact 42 is bent toward the remote opening / closing mechanism B side, and the contact surface of the fixed contact 42 with the movable contact 41 is substantially flush with the surface of the arc traveling plate 17a on the breaking mechanism A side. Is done. The contact surface between the remote fixed contact 42 and the remote movable contact 44 is substantially the arc traveling plate 17a.
It is flush with the surface of the bent portion of the remote opening / closing mechanism section B side.

In this way, each fixed contact 42, 43
The distance between the contact surfaces facing the movable contact 41 and the remote movable contact 44 can be narrowed, and the arc traveling plate 1 interposed between the movable contact 3 and the remote contact 5 is provided.
The exclusive space of 7a can be reduced. Therefore, the drive space of the remote contactor 5 can be widened, and the remote movable contact 4
The insulating distance between the remote fixed contact 4 and the remote fixed contact 43 is widened, the life of the contact can be extended, and the switching performance is improved.

A gap is provided between the fixed contact 42, 43 and the bent portion between the fixed contact 42, 43 of the arc traveling plate 17a. As a result, the substantial distance through which the current flows is lengthened, and the movable contact 41
The magnetic repulsive force generated between the fixed contact 42 and the fixed contact 42 can be strengthened. The above is the description of the case of manufacturing the contact breaker shown in FIG. 1A, but in the case of the contact breaker of the present embodiment, the housing 10 is used.
Since the shut-off mechanism section A is mounted on one end side and the remote opening / closing mechanism section B is mounted on the other end side, a breaker having only the shut-off mechanism section A or a remote control relay having only the remote opening / closing mechanism section B is installed. Easy to change.

For example, in the case of the breaker shown in FIG. 1B, the remote opening / closing mechanism section B may be removed as shown in FIG. In this case, the load terminal 9 and the arc traveling plate 17a are connected by the braided wire 28. Further, when the remote control relay shown in FIG. 1C is used, as shown in FIG. 4, the blocking mechanism section A side may be removed before manufacturing. Here, only the arc traveling plate 17a is left as a fixed contact plate, and the ground traveling plate 17a and the power supply terminal 25 are connected by a braided wire 28.

In this way, a contact breaker, a breaker and a remote control relay can be formed with a housing of the same shape and size, which can be easily mounted when they are integrally arranged on, for example, a distribution board and the like. There is an advantage that they are interchangeable and can be replaced freely. It should be noted that as the body forming the housing 10, a body for which the opening for the handle 1 or the display window 22 is eliminated may be used, but the opening is closed by post-processing depending on the type of breaker to be manufactured. You may do it.

[0023]

As described above, the present invention performs the circuit closing and the circuit breaking in response to a remote control signal, and the circuit breaking mechanism for cutting the circuit in conjunction with the operation of the handle or the operation of the abnormal current detector. A storage part for housing the remote opening / closing mechanism part as necessary is provided in each housing, and a fixed contact for contacting and opening a movable contact fixed to the movable contactor of the breaking mechanism part and a remote contactor of the remote opening / closing mechanism part. Since the fixed contact plate with the front and back fixed remote contact that the remote movable contact fixed to the contact opens and closes is arranged between the respective storage parts, the breaking mechanism part and the remote opening / closing mechanism part are selected. The contact breaker, the breaker, and the remote control relay having the substantially same shape and same size housing can be easily manufactured. Moreover, since the breaking mechanism section and the remote opening / closing mechanism section are selectively mounted, there is an advantage that it is not necessary to individually design the contact breaker, the breaker, and the remote control relay.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an external structure and a schematic internal structure when a contact breaker, a breaker, and a remote control relay are used as an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a contact breaker.

FIG. 3 is a sectional view of a breaker.

FIG. 4 is a cross-sectional view of a remote control relay.

[Explanation of symbols]

 A shutoff mechanism B remote opening / closing mechanism 1 handle 2 abnormal current detector 3 movable contactor 4 contacts 5 remote contactor 10 housing 17a arc traveling plate 41 movable contact 42 fixed contact 43 remote fixed contact 44 remote movable contact

Claims (1)

[Claims] 1. A disconnection mechanism section for disconnecting an electric path in association with a steering wheel operation or an operation of an abnormal current detection section, and a remote opening / closing mechanism section for closing and disconnecting an electric path according to a remote control signal are required. Each of the housings accommodates a corresponding one, and the fixed contact that the movable contact fixed to the movable contact of the shutoff mechanism contacts and separates, and the remote movable contact fixed to the remote contact of the remote opening and closing mechanism. A breaker characterized in that a fixed contact plate having front and back fixed remote contact points that are opened and closed by contact is arranged between the respective storage sections.