JPS6093732A - Defect display unit - 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] [Field of Application of the Invention] The present invention relates to a failure indicator, and more particularly, to a failure indicator that can generate a repeated signal or a signal only for the first time when a failure occurs. .

[Background of the invention]

Conventional failure indicators generate signals in conjunction with display boards, such as those shown in the embodiments of Japanese Patent Publication No. 56-6096 and Japanese Patent Publication No. 56-5008. Therefore, when the display board falls due to a failure, it is possible to generate a signal only once.

There are two types of failures: (1) those that are unlikely to occur again once they occur, and (12) those that are likely to occur repeatedly.

A specific example is the following case.

In case (2), a specific example is an accident where the temperature of a transformer increases due to overload. This interaction limits the load on the transformer and lowers the transformer temperature, and even if the transformer temperature rises due to backflow load, the temperature rise → temperature drop → flooding rise will take several hours 11 Jl. The temperature rise of the transformer for the second time during the normal cycle can be seen as the occurrence of a new failure since several hours have passed since the first temperature rise. Therefore, it is necessary to issue an alarm (pulse output contact operation) every time.

In the case of (2), a ground fault is cited as a specific example.

This occurs when the cable insulation breaks down and the wire comes into contact with metal or the like.

This is a case where the contact between the wire and the metal is not perfect and the wire comes into contact with or separates from the metal due to vibrations and shocks. Such failures can occur in short cycles of several seconds to several minutes, so issuing an alarm every time would confuse maintenance.If an alarm is issued only when the first failure occurs, Since maintenance work is carried out at that point, no further warnings are required.

As explained above, since the above-mentioned failure cases include ■■, two types of failure indicators that issue only one alarm and those that issue repeatedly are essential.

Conventional fault indicators cannot meet this requirement.

[Object of the Invention] The object of the present invention is to provide a single failure indicator that generates a signal only once when a failure occurs, and repeatedly generates a signal each time a failure occurs after the display board falls. The purpose is to provide a fault indicator that can be switched and used at will.

[Summary of the invention]

The present invention uses one fault indicator, and when a fault occurs, the first
It is possible to generate a signal only once or to generate a signal repeatedly each time a failure occurs by operating a switching rod that operates the use or exclusion of the fixture.

[Embodiments of the invention]

Embodiments according to the present invention will be described with reference to FIGS. 1 to 13.

Figure 1 shows the front of the display, with the display window IA and the return lever hole IB located approximately in the center of the case 1.
There is a display board return lever 11E inside, and a switching rod 22 is located in the switching rod hole IC at the top.

Figure 2 shows the internal mechanism of the display.The mechanism part relocated to the base 2 is housed in the case 1, and the display window IA on the front of the case 1 displays the failure status and normal status. It looks like this will be done.

When a fault occurs, the contacts of a fault response relay (not shown) are closed and the power supply voltage is applied to the coil terminal 3, which excites the operating coil 6 via the coil lead 4 connected to the coil terminal 3. The operating coil 6 is wound around the bobbin 5, and an inverted yoke 7 is arranged below the bobbin 5.
The armature shaft 1o is attached to the inverted front part 5A at the tip of the bobbin 5.
An armature 9 and a display plate 11 are both attached so that they can be rotated. Further, an iron core 8 is arranged at the center of the bobby 15, and one end is integrally constructed with the yoke 7.

Therefore, when the working coil 6 is excited, a magnetic path is formed by the iron core 8 made of a magnetic material, the yoke 7, and the armature upper part 9A, and the armature upper part 9A is attracted to the iron core 8, but the working coil Return spring 1 engages with lock A13 when 6 is de-energized
4, the armature upper part 9A is separated from the iron core 8, hits the tip of the yoke 7, and stops.

A part of the arc-shaped locking metal fitting 13 is rotatably attached to the inverted-shaped front part 5A at the tip of the bobbin 5 by the locking metal fitting shaft 12, and the armature upper part 9A is attached to one end of the locking metal fitting 13. A return spring 14 attached to one end is attached.

The return spring 14 is engaged with the armature upper part 9A and the locking fitting 13 so as to rotate counterclockwise.
The dimensions are arranged such that the rotational torque of A is a dog. Step portions 13A and 13B are provided on the inner circumferential surface of the lock fitting 13.

On the other hand, on the display board 11, an arc-shaped display section 11C that displays the normal state and an arc-shaped display section 11D that indicates the full extent of the failure occurrence.
It can be identified by painting, etc. Further, the display board 11 is provided with a bar-shaped display board return lever LIE. The display plate arm 11A is provided with an engagement hole 11B through which the lock fitting 13 passes. The return lever 11E provided on the display board 11 is used to push up the display board 11, which has fallen due to a failure, upward after the failure has been recovered.

A switch fixing piece 15 is attached to the inverted front part 5A of the bobbin 5.
is provided, and a switch 16 is attached to the switch fixing piece 15.

The switch 16 is configured such that a contact output is obtained at the switch contact terminal 16B only when the switch contact base piece 16A is pushed to the left in FIG. 2, and when the external force is removed, the switch contact drive piece I6A automatically returns to the right side of Figure 2. At this time, no contact output is generated.

The contact output is taken out from the switch contact 1/iM element 16B to the contact terminal 18 via the contact lead 17. The yoke 7 and the iron core 8 are fixed to the base 2 together with the rear part 5B of the bobbin 5.

The armature upper part 9A attracted to the iron core 8 of the armature 9 and the spring part 9B extending in the opposite direction are formed by molding a part of the armature 9 to have elasticity.

As shown in FIGS. 10 and 11, the end portion 19A of the elastic spring ring 19 is inserted into the hole 9C of the spring portion 9B to apply stress to the spring portion 9B. Here, FIG. 10 shows the side surface of the armature spring section, and FIG. 11 shows the back surface of the armature spring section.

When the normally operating coil 6 is not energized, the stepped portion 1 of the locking fitting 13
3A engages with the engagement hole 11B of the display board 11, and the display board 11
prevents it from falling. In this state, the switch drive piece 16A is not in contact with the tip of the spring portion 9B of the armature 9, and the switch 16 does not generate contact output. In this state, as shown in FIG.
'iC is displayed.

Due to the occurrence of a fault, the operating coil 6 is energized, and the upper armature 9
When A is attracted to the iron core 8, the locking fitting 13 releases the return spring 1.
4, it rotates counterclockwise.

During this time, the engagement hole 11B of the display board 11 and the step part 13A of the lock fitting 13 are disengaged, the display board 11 falls due to gravity, and the engagement hole 11B of the display board 11 is disengaged from the step part 13A of the lock fitting 13. Part 1
It engages with 3B and stops. In this state, as shown in FIG. 3, the display panel display section 11D is displayed on the display window IA.

Figure 3 shows the state after the failure occurs.

The operation of the switch 16 when a failure occurs will be explained with reference to FIGS. 6 to 9.

FIG. 6 shows the state before the failure occurs. When the operating coil 6 is excited due to the occurrence of a failure, the armature upper part 9A is attracted to the iron core 8. Therefore, the spring portion 9B of the armature 9 rotates clockwise nine times, the switch drive piece 16A is pushed to the left in FIG. 6, and the switch 16 generates a contact output. This state is shown in FIG. In the state shown in FIG. 7, the armature upper part 9A is not completely attracted to the iron core 8, and just before the armature upper part 9A is completely attracted to the iron core 8, the spring part 9B passes through the dead center, and the armature When the upper part 9A is completely attracted to the iron core 8, the tip of the spring part 9B is reversed and the switch drive piece 16A
Move away from it and stand still. This state is shown in FIG.

When the fault is recovered and the operating coil 6 becomes non-energized and the armature upper part 9A is released from the iron core 8, the spring part 9 of the armature 9
B rotates counterclockwise. Therefore, the tip of the spring portion 9B comes into contact with the tip of the lower portion 5C of the bobbin 5. This state is shown in FIG.

From this state, the return spring 14 causes the armature 9, which is further applied with counterclockwise torque, to rotate counterclockwise until it hits the tip of the yoke 7 and stops.

During this time, just before the armature 9 hits the tip of the yoke 7 and stops, the spring part 9B passes through the dead center in the opposite direction to the operating direction, and the armature 9 hits the tip of the yoke 7 and stops. Then, the tip of the spring portion 9B is reversed, separated from the tip of the lower portion 5C of the pobbin 50, and comes to rest.

This state is the same as the state before the failure occurs, and is the state shown in FIG.

A fixture 2 is attached to the upper part 5D of the bobbin 5 by a fixture shaft 20.
1 is attached so that it can be moved.

The fixture engaging portion 11F, which is integrated with the display board 11, normally holds the fixture 21 in a position where the fixture 21 does not engage with the armature 9, but when the display board 11 falls due to a failure. In this case, the fixture 21 and the fixture engaging portion 11F of the display board 11 are disengaged, and the fixture 21 falls due to gravity, so the armature 9
is locked while being attracted to the iron core 8. This armature 9
To lock the light display 11 after the failure is recovered, press the display board return lever 1.
1E, the fixture engaging portion 11F of the display board 11 engages with the fixture 21, and is released by pushing the fixture 21 upward.

Therefore, even if a failure occurs again after the display board 11 falls after the signal from the switch 16 is generated due to a failure, the signal from the switch 16 is prevented from being generated.

As explained above, the switching rod 2 is held by the switching rod hole IC in the case 1 and the switching rod holding piece ID in the case l.
2 is not engaged with the fixture 21, a signal is generated only once when a failure occurs.

If the switching rod is pushed in and the fixing tool 21 is pushed up and held still, the display board 11 will fall due to a failure, and the display board 11 will fall.
Even if the fixture 21 is disengaged from the fixture engaging portion 11F integrated with the fixture 21, the fixture 21 will not fall, and the armature 9 will be separated from the iron core 8 due to failure recovery and return to its original state. Therefore, when the display board 11 recovers from the failure after it falls due to a failure, and the failure occurs again, the switch 16 generates a signal.

The normal state in which the fixture 21 is locked by the switching rod 22 is shown in the fourth example.
Diagram: Condition at the time of failure! The river is shown in Figure 5.

According to the present invention, by operating the switching rod 22, when a failure occurs, it is possible to generate a signal only once for the first time, or to generate a signal each time a failure occurs, using a single failure indicator. effective.

Therefore, one fault indicator functions as two types of fault indicators, and for those who maintain the equipment, it is possible to generate two types of signals by simply operating the switching rod. This has the effect of allowing you to select arbitrarily.

In this example, stress is applied to the spring part by tension, but stress may also be applied by compression, and there are various methods of applying stress to the spring part by tension other than this example.・(You can achieve the same goal by passing through the dead center of the neck part and operating the switch.

In addition, in this embodiment, the switching rod is operated so that by pushing the switching rod, a signal is generated repeatedly, and when the switching rod is not pushed, a signal is generated only once for the first time, but vice versa. In other words, a configuration may be adopted in which a signal is generated only once for the first time by pushing the switching rod, and a signal is generated repeatedly without pushing the switching rod.

In addition to the method of using a spring at the lower part of the armature shown in the embodiment of the present invention, various methods of generating a signal in conjunction with the armature can be considered.

For example, as shown in the example of Japanese Patent Publication No. 56-6096, a contact is made in which the armature and the contact of the microswitch are engaged and the microswitch is driven only during a transient period when the armature is attracted. It may be shaped.

Further, as shown in the embodiment of Japanese Patent Publication No. 56-5008, the signal may be generated by a combination of normally open contacts and normally closed contacts.

〔Effect of the invention〕

According to the present invention, by operating the switching rod, a single failure indicator can generate a signal only for the first time when a failure occurs, or repeatedly generate a signal each time a failure occurs. There is.

[Brief explanation of drawings]

Fig. 1 shows the front of the fault indicator, Figs. 2 to 5 are side views showing the internal mechanism of the fault indicator, Fig. 2 shows the normal state in which the fixture is used, and Fig. 3 indicates the condition when a failure occurs when using a fixture. FIG. 4 shows a normal state of fixture removal, and FIG. 5 shows a state of fixture removal when a failure occurs. 6 to 9 are diagrams showing details of the operation of the armature spring section. 10 and 11 are diagrams showing details of the armature spring section, with FIG. 10 showing the side surface of the armature spring section, and FIG. 11 showing the back surface of the armature spring section. Figures 12 and 13 are diagrams showing details of the spring ring,
The twelfth factor shows the side surface of the spring ring, and FIG. 13 shows the back surface of the spring ring. 1... Case, IA... Display window, IB... Machine return (- hole, IC... Switching rod hole, 2... Base, 3...
...Coil terminal, 4...Coil lead, 5...Bobbin, 5A...Bobbin front, 5B...Bobbin rear, 5
C...lower bobbin, 5D...upper bobbin, 6...
Operating coil, 7... Yoke, 8... Iron core, 9... Armature, 9A... Armature upper part, 9B... Armature spring part, 9C... Armature/knee part Hole, 10... armature shaft,
11... Display board, 11A... Display board arm, IIB...
・Display plate engagement hole, 11C...Display plate display section, 11D・
...Display board display section, 11E...Display board return lever, 1
1F...Display board hook engagement part, 12...Lock fitting shaft, 13...Lock fitting, 13A...Lock fitting step part, 1
3B...Lock fitting stepped part, 14...Return spring, 15.
...Switch fixing piece, 16...Switch, 16A...
・Switch contact drive piece, 16B...Switch contact terminal, 17-...Contact lead, 18...Contact terminal, 19
...Spring ring, 19A...Spring ring end, 20
... Fixture shaft, 21 Fig. 1 Fig. 2 Fig. 3riJ No. 4-ro v! 5 (2) Ninikok No. tom Note 11 Figure 12 '@130

Claims (1)

[Claims] 1. An electromagnet that is energized by the operation of the controlled device and is continuously energized during the operation of the device, an armature that is attracted by the energization of this electromagnet, and an electromagnet that is re-energized after the display board falls. consists of an identification device that locks the operation of the armature when By operating the switching rod on the fault indicator, it is possible to generate a repeated signal in conjunction with the armature each time a fault occurs, or to generate a signal only once for the first time. fault indicator.