JP2000251600A - Mechanical failure detecting device for magnet conductor and mechanical failure detecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely detect a mechanical failure without changing design of an existing magnet conductor. SOLUTION: This detecting device having a movable iron core 7, a movable contact 8a, a fixed contact 8b, and a spring 9 is connected with a terminal 5 on a magnet conductor 1 side using a common screw, and post-mounting of the detecting device to the magnet conductor 1 is easily performed. Based on opening or closing of the movable contact 8a and the fixed contact 8b in a cover body 6, a mechanical failure of the magnet conductor 1 is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for detecting mechanical failure of a magnet conductor suitable for detecting mechanical failure of a magnet conductor.

[0002]

2. Description of the Related Art A magnet conductor has a structure in which an exciting coil is provided in a cylindrical case, a movable core is disposed in a hollow portion thereof, and a pair of fixed contacts are attached to both sides of the movable core. A movable contact is insulated and slidably fitted to the movable core.

[0003] When an exciting current is supplied to the exciting coil, the movable iron core is attracted by magnetic force. When the movable core is attracted, the movable contact comes into contact with the pair of fixed contacts, and the switch is turned on.

[0004]

However, in the above-mentioned conventional magnet conductor, there is no means for detecting a mechanical defect, and therefore, there is a problem that the mechanical defect cannot be detected instantaneously.

Further, when a new circuit such as a relay is incorporated in order to detect a mechanical failure, there is a problem that a design change of the magnet conductor is forced.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a mechanical failure detection of a magnet conductor that can reliably detect a mechanical failure without changing the design of an existing magnet conductor. It is possible to provide an apparatus and a method for detecting a mechanical failure thereof.

[0007]

According to a first aspect of the present invention, there is provided an apparatus for detecting mechanical failure of a magnetic conductor, comprising: a movable iron core that moves in conjunction with a movable iron core on the magnet conductor side;
A movable contact provided on the movable core, a fixed contact fixed inside the adapter, and an elastic member for biasing the movable core to a side where the movable contact comes into contact with the fixed contact; A mechanical defect of the magnet conductor is detected by opening and closing. Further, the fixed contact may be provided with a terminal connected to the terminal on the magnet conductor side by using a common screw. Further, the movable core, the movable contact, the fixed contact, and the elastic member can be accommodated in a transparent or translucent cover body. The method for detecting a mechanical defect of a magnet conductor according to claim 4, wherein the first step of moving the movable core in conjunction with the movable core on the magnet conductor side and the second step of moving the movable contact in conjunction with the movable core. A third step of urging the movable core toward the side where the movable contact contacts the fixed contact; and a fourth step of detecting mechanical failure of the magnet conductor by opening and closing the movable contact and the fixed contact. It is characterized by having. Further, the fourth step may include a step of detecting opening and closing of the movable contact and the fixed contact by a lead line connected to the fixed contact. Further, the fourth step may include a step of detecting a mechanical failure of the magnet conductor by moving the movable iron core. In the apparatus for detecting mechanical failure of a magnet conductor and the method for detecting mechanical failure according to the present invention, a detection apparatus including a movable iron core, a movable contact, a fixed contact and an elastic member uses a common screw for a terminal on the magnet conductor side. In addition, a mechanical failure of the magnet conductor is detected by opening and closing the movable contact and the fixed contact.

[0008]

Embodiments of the present invention will be described below.

FIG. 1 is a view showing an embodiment of a mechanical defect detecting device for a magnet conductor according to the present invention, and FIG.
FIG. 2 is a diagram for explaining an operation of the mechanical failure detection device for the magnet conductor of FIG. 1.

The magnetic conductor mechanical failure detecting device (hereinafter simply referred to as a detecting device) shown in FIG. The cover body 6 is attached later to the magnet conductor 1, and includes a movable core 7, a movable contact 8a, a fixed contact 8b, a spring 9, and a terminal 10.
It has.

The movable iron core 7 is pressed downward by a spring 9. The terminal 10 is provided at an outer peripheral end of the fixed contact 8 b and is screwed to the magnet conductor 1.

The magnet conductor 1 includes a movable iron core 2,
It includes a movable contact 3a, a fixed contact 3b, a coil 4, and a terminal 5.

The movable core 2 is moved by the attractive force of the coil 4.
It is pushed down. The top of the movable iron core 2 has a cover 6
Contact the lower end of the movable iron core 7 of FIG. The terminal 5 is a cover 6
Is connected to the terminal 10.

Next, the operation of the detection device having such a configuration will be described with reference to FIG.

First, the cover 6 is mounted on the magnet conductor 1. When mounting, the terminal 10 of the cover body 6
Is aligned with the terminal 5 of the magnet conductor 1. Next, the terminal 10 is connected to the terminal 5 by sharing the screw of the terminal 5 of the magnet conductor 1. Thereby, the attachment of the cover 6 to the magnet conductor 1 is completed.

At this time, the lower end of the movable core 7 of the cover 6 is pushed up by the top of the movable core 2 as shown in FIG. Therefore, the movable contact 8a and the fixed contact 8b are in a non-contact state.

In this state, an AC voltage (AC1
When the voltage of (00 to 200 V) is applied, the movable iron core 2 is pushed down by the attractive force of the coil 4. At the same time, the movable iron core 7 of the cover body 6 is pushed down by the urging force of the spring 9. Thereby, as shown in FIG. 2B, the movable contact 8a and the fixed contact 8b of the cover body 6 are closed.

On the other hand, an AC voltage (AC100
When the power is cut off, the attractive force of the coil 4 is released, and the movable iron core 2 returns to the original position. The movable core 7 of the cover 6 is moved by the spring 9
Is pushed up against the urging force. Thereby, the movable contact 8a and the fixed contact 8b of the cover body 6 open.

As described above, when the magnet conductor 1 is driven, the movable contact 8a and the fixed contact 8b of the cover 6 are
Opens and closes. With this opening and closing, the magnet conductor 1
Can be detected instantaneously.

The opening and closing of the movable contact 8a and the fixed contact 8b of the cover 6 is performed, for example, as shown in FIG.
The detection can be performed by connecting an alarm line or the like to the terminal 10.

As described above, in this embodiment, the detection device including the movable iron core 7, the movable contact 8a, the fixed contact 8b, and the spring 9 is connected to the terminal 5 on the magnet conductor 1 using the common screw. Therefore, it is possible to easily attach the detection device to the magnet conductor 1.

Since the mechanical failure of the magnet conductor 1 is detected by opening and closing the movable contact 8a and the fixed contact 8b inside the cover body 6, the mechanical contact of the magnet conductor 1 can be made without changing the design. Failure can be reliably detected.

The cover 6 can be transparent or translucent. In this case, since the movement of the movable iron core 7 inside the cover body 6 can be confirmed from the outside, it is also possible to visually detect a mechanical failure.

[0024]

As described above, according to the apparatus for detecting mechanical failure of a magnet conductor and the method for detecting mechanical failure according to the present invention, a detection apparatus having a movable iron core, a movable contact, a fixed contact, and an elastic member is provided by a magnet. A common screw is used to connect to the terminal on the conductor side, and the mechanical contact of the magnet conductor is detected by opening and closing the movable contact and the fixed contact. Failure can be reliably detected.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a magnet conductor of the present invention.

FIG. 2 is a diagram for explaining the operation of the magnet conductor of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 magnet conductor 2, 7 movable core 3a, 8a movable contact 3b, 8b fixed contact 4 coil 5, 10 terminal 6 cover body 9 spring

Claims (6)

[Claims] 1. A movable iron core that moves in conjunction with a movable iron core on the magnet conductor side, a movable contact provided on the movable iron core, a fixed contact fixed inside an adapter, and the movable iron core, An elastic member for biasing a contact to a side contacting the fixed contact, and detecting mechanical failure of the magnet conductor by opening and closing the movable contact and the fixed contact. Detection device. 2. The magnet conductor according to claim 1, wherein the fixed contact has a terminal connected to a terminal on the magnet conductor side using a common screw. apparatus. 3. The mechanical defect of the magnet conductor according to claim 1, wherein the movable iron core, the movable contact, the fixed contact, and the elastic member are housed in a transparent or translucent cover body. Detection device. 4. A first step of moving a movable core in conjunction with a movable core on a magnet conductor side; a second step of moving a movable contact in conjunction with the movable core; A third step of biasing the movable contact to a side contacting the fixed contact; and a fourth step of detecting mechanical failure of the magnet conductor by opening and closing the movable contact and the fixed contact. Method for detecting mechanical failure of a magnet conductor. 5. The magnet according to claim 4, wherein the fourth step includes a step of detecting opening / closing of the movable contact and the fixed contact by a lead line connected to the fixed contact. A method for detecting mechanical defects in conductors. 6. The mechanical failure of the magnet conductor according to claim 4, wherein the fourth step includes a step of detecting a mechanical failure of the magnet conductor by moving the movable iron core. Detection method.