JPS6328450Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Description of the Technical Field The present invention relates to a dual-display fault display device that displays the operating status of a controlled device such as an electrical device or a mechanical device.

(b) Description of the prior art A dual display type display device detects a state of operation in an electrical device or a mechanical device using an electric signal, and uses this to excite an electromagnet to exchange display marks depending on the content of the state. It is something.

A conventional example of this type will be briefly explained with reference to FIGS. 1 and 2. FIG. 1 shows the returned state of the device, and FIG. 2 shows the operating state. In FIG. 1, when the coil 1 is excited, the armature 2 is attracted to the iron core. When the armature 2 is attracted to the right side in the figure, the first movable display plate 4 and the locking piece 5, and the armature 2 and the locking plate 6 are disengaged from each other. Therefore, the first movable display board 4 falls under its own weight and is positioned in front of the fixed display board 7, and its display mark displays the operation through the display window 17.

At the same time, the contact springs 8 that had been pushed up by the first display panel 4 return to close the contacts and provide electrical display. Next, in the operating state as shown in FIG. In contact with 12,
The second display board 10 and the first display board 4 are pushed up against each other.

At this time, when the coil 1 continues to be excited, the locking portion 13 of the second display plate 10 engages with the locking pawl 14 interlocking with the armature 2, and the second display plate 10 is connected to the fixed display plate. 7 and performs confirmation display using the display mark. At this time, if the coil 1 is in a non-energized state (returning state), the armature 2 is in a position in contact with the stopper 16 due to the return spring 15.
3 and the locking pawl 14 do not engage with each other, so when the return button 9 is released, it falls under its own weight.

At this time, the first display plate 4 is engaged by its locking piece 5 and the locking plate 6 of the armature 2, so that it does not fall.

When the coil 1 changes from the state in which confirmation is displayed on the second display plate 10 to the non-excited state, the first display plate 4 displays its locking piece 5 and the locking plate 6 of the armature 2, as described above. However, as described above, the second display board 10 falls when the locking portion 13 and the locking pawl 14 interlocking with the armature 2 are disengaged, so that the second display board 10 is in the state shown in FIG. to return to.

In such a conventional dual-display display device, the first display panel and the second display panel must be provided separately, and their positional relationship with each other is delicate, requiring skill to assemble.

(c) Purpose of the present invention The purpose of the present invention is to provide a double-display type fault display device that has a single movable display board and is simple to assemble.

(d) Structure of the present invention An embodiment of the present invention will be described with reference to FIGS. 3 to 5.

Reference numeral 21 denotes an electromagnet in which an electromagnetic wire ring 23 is wound around an L-shaped iron core 22, and an armature 25 is provided near the attraction surface of this electromagnet, one end of which is supported by a pin 24 and rotates under the attraction force.

Next, the U-shaped movable display board 26 whose bottom plate forms a mark display surface is held by the electromagnet 21 with its legs 26a.
The ends of both legs 26a are rotatably attached to support pins 27.

A locking piece 28 is formed to protrude from the leg 26a of the movable display board 26, and a locking piece 29 is provided protruding from the leg 26a at a position slightly shifted in the direction of the support pin 28 and facing the locking piece 28. I'll keep it.

Next, the armature 25 has an engaging pawl 30 having a spring action that engages with the locking piece 28 in the released position and engages with the locking piece 29 in the attracted position. Install it.

Next, a locking plate 3 attached to a stationary member (not shown)
A return button 32 is provided which is fitted into the through hole 1 and rotates the movable display plate 26 upward by manual pressing force. 33 is a coil spring that pulls the armature 25 in the direction of release, 34 is a stop for limiting its release angle, 35 is a fixed display board, 36 is a display window, 37 is a movable display board, and 26 is a stop that limits the falling position. It is.

The display portion 38 of the movable display board 26 is formed to have a length approximately twice the width of both legs 26a, and is bent into a dogleg shape. One side 38a of the dogleg shape and the other side 38b have different display marks 38a',
Set it to 38b'.

Next, when the movable display board 26 falls, a contact mechanism such as a micro switch 39 is provided which opens and closes the contacts by its own weight.

(e) Function of the present invention Next, the function of the present invention configured as above will be described with reference to FIGS. 3 to 5.

FIG. 3 shows a state in which the electromagnet 21 is not energized and the armature 25 is released, that is, a returned state. In this state, the locking pieces 28 of the movable display board 26 are caught by the engaging claws 30 of the armature 25, and the movable display board 26 is prevented from falling under its own weight.

Therefore, the return state is displayed on the movable display board 26.
This is performed by the display mark 38a' displayed on one side 38a of the dogleg-shaped part, and the electrical display or control operation is performed by configuring the external circuit appropriately since the contact of the contact mechanism is open. I can do it.

Next, when the electromagnet 21 is excited, the armature 25 is attracted to the iron core 22 as shown in FIG.
from the locking piece 28.

Therefore, the movable display board 26 falls by its own weight around the support pins 28, and the bottom portion 38 of the movable display board 26 is stopped by a stop 37. At this time, the movable display board 26
The fixed display board 35, which had been largely hidden, is revealed by the display mark on one side 38a in the shape of a dogleg, indicating that it is in operation, and the weight of the movable display board 26 causes the micro switch 39 of the contact mechanism to be activated. and provide signals to external devices as electrical indications or necessary control commands.

Next, in the above state, in order to confirm that the electromagnet 21 continues to be energized, the operator presses the return button 32 upward in the direction of the arrow 40 (FIG. 5).

If the contactor 25 is attracted to the iron core 22 at this time, the locking piece 29 of the movable display plate 26 will be caught on the engagement claw 30 of the armature 25, as shown in FIG. The display board 26 confirms that the excitation is to be continued using a display mark 38b' displayed on the other side 38b of the dogleg shape.

At this time, the micro switch 3 of the contact mechanism
9 returns (opens) and performs necessary electrical display and control.

However, if the electromagnet 21 is de-energized and the armature 25 is released when the return button 32 is pressed, the locking piece 29 of the movable display board 26
does not engage with the locking pawl 30 of the armature 25, but the locking piece 28 of the movable display board 26 engages with the locking pawl 30, preventing the movable display board 26 from falling under its own weight.

As a result, the restored state is displayed as shown in FIG.

(f) Modifications The invention may be freely modified without changing the gist of the invention. For example, (1) as shown in FIG. 6, by changing the method of configuring the magnetic circuit using the iron core 22 of the electromagnet 21,
and 41b, and fix the iron core 41b.
The engagement claw 30 may be attached to the armature 1a, and the armature 43 may be moved in a sliding manner by a return coil spring 42.

(2) Instead of pushing up the legs 26a of the movable display board 26 directly with the return button as shown in FIG. It may be configured to rotate, and the push button portion 43 may be used as a link mechanism.

(3) The shape of the display mark portion of the movable display board 26 may be changed so as to have an optimal size and positional relationship with respect to the fixed display board 35.

(g) Overall effect According to the present invention, the structure can be simplified because only one movable display board is required. Therefore, the reliability of operation is improved and the cost can be reduced, which is a great effect.

[Brief explanation of the drawing]

1 and 2 are diagrams showing an example of a display device in the prior art, and FIGS. 3 to 5 are diagrams showing an embodiment of the present invention, in particular, FIG. 3 is a diagram showing a return state, FIG. 4 is a diagram showing an operating state, FIG. 5 is a diagram showing a confirmation state (failure signal continuation), and FIGS. 6 and 7 are diagrams showing modifications of the present invention. 21... Electromagnet, 22... Iron core, 23... Electromagnetic wire ring, 24... Pin, 25... Armature, 26...
Movable display board, 26a...Legs of the movable display board, 27...
...support pin, 28...locking piece, 29...locking piece,
30...Latching claw, 31...Latching plate, 32...Return button, 33...Coil spring, 34...Stop, 3
5... Fixed display board, 36... Display window, 37... Stop, 38... Display section, 38a... Return status display section, 38b... Confirmation (signal continuation) display section, 39...
...Contact mechanism (micro switch).

Claims (1)

[Claims for Utility Model Registration] (1) A movable display board is rotated between a display window and a fixed display board provided opposite to this display window in response to an armature that is attracted and released depending on the energized state and non-excited state of an electromagnet. A fault display device that displays the normal state, fault state, and fault continuing state of a controlled device through a display window depending on the position of a movable display board that has a normal display section and a fault continuation display section and a fixed display board that has a fault display section. The movable display board is provided with an engaging claw of the armature that is open in a normal state, so that the normal display part faces the display window, and when the armature is attracted in a malfunction state. A first locking piece that allows the failure display part of the fixed display board to face the display window after the lock is released from the engagement claw, and a suction when the movable display board is pushed up by the return button in a state where the failure continues. The armature is locked to the engaging claw of the armature, and the failure continuation display section is faced to the display window, and when the fault is recovered and the armature is released, the lock is removed from the engaging claw and a normal display is displayed. A fault display device comprising: a second locking piece that faces the display window. (2) A utility model characterized in that the movable display board closes the contacts that electrically indicate the status of the controlled device when it becomes unlatched with the first locking piece and falls in a faulty state. A failure indicating device according to claim 1 of the registered claim.