JPS6325627Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an indicator that displays the mechanical operating state inside a closed container such as a rotary switch to the outside of the closed container.

Conventionally, the operating state of a rotary switch was displayed externally by passing the force through a hole and transmitting force directly to the display via a suitable transmission shaft. For example, the first
As shown in the figure, an appropriate display B indicating the operating state was placed on the surface of the switch A, and the above display B was indicated by an arrow C provided on a transmission shaft passing through one side of the switch A. It is. Therefore, O-rings and O-rings are used to maintain the airtight condition inside the switch A.
A ring receiver, transmission shaft, etc. were required.

Further, even if the above-mentioned O-ring or the like was used, maintaining the airtight state was unstable.

This idea was created in view of the above-mentioned problems found in conventional display methods, and aims to have a simple structure using magnets, eliminating the need for penetrating holes and ensuring that the airtight state of the sealed container is maintained. The purpose of this invention is to provide a display device that will

Below, one embodiment of this invention will be explained with reference to the drawings. 1 is a semicircular movable display board, made of a permanent magnet with different magnetic poles on the front and back sides, and has a switch on the front and back sides. Half of the characters ``ON'' and ``OFF'' indicating the operating state are written, and two rotation pins 2 are provided almost on the extension of the straight part. 3 is a circular base plate with a circular display section 4 in the center.
This display section 4 is divided and displayed in the center, and the remaining half of the characters ``ON'' and ``OFF'' written on the front and back sides of the movable display board 1 are written respectively. Therefore, the movable display board 1 has a hinge 5 provided on the base board 3.
A circular cover 7 having a transparent dome 6 in the center and the base plate 3 are connected to a side plate 8 made of a non-magnetic material of a switch. It is fixed to the outside of the body using an appropriate fixing means. In this embodiment, the bolts installed in the side plate 8 of the switch are passed through the holes 9 and 10 and fixed with nuts, but the invention is not limited to this. It may be fixed to the side plate 8. Reference numeral 11 denotes a substantially V-shaped permanent magnet, which is attached to the rotating member 1 so that the magnetic poles 11a and 11b at the tip thereof can be directed toward the back surface of the display section 4 of the base plate 3.
2, it is rotatably fixed to the inside of the switch. This permanent magnet 11 is linked to a rotating shaft (not shown) in the switch, and in this embodiment, when in the closed state, the S pole of the movable display board 1 and the N pole of the permanent magnet 11 are connected as shown in FIG. are set so that they attract each other, and the operation display in that case becomes "ON" as shown in FIG. Next, when the switch is opened, the permanent magnet 11 rotates upward in conjunction with the rotating shaft, and the magnetic pole facing the base plate 3 becomes the S pole, and the magnetic pole on the back side of the movable display plate 1 rotates upward. The movable display plate 1 rotates half a rotation due to the repulsion from the S pole, and the operation display changes from FIG. 5 to "OFF" as shown in FIG. 6. If a series of operating conditions are shown, it will be as shown in FIG. 4, then from FIG. 7 to FIG. 8. Also, the change from "off" to "on" is quickly performed in the same manner as described above. The state where it is attached to the switch is also preferable as it is easy to clean as shown in FIG.

When viewed in this way, the effects of the magnetic sign for a rotary switch according to this invention are clear in the following points.

First of all, the overall structure is simple, there are only a few components, and since it is directly linked to the rotating shaft inside the rotary switch, there is no malfunction and it is extremely reliable. Furthermore, regarding the drawback of the instability of maintaining airtightness seen in conventional display methods, this invention eliminates the need for holes or other penetrating parts in the switch when it is attached to the switch, ensuring that the internal airtightness is maintained for a long time. It can be maintained as it is for a long time.

In the above embodiment, the driving magnet was a substantially V-shaped permanent magnet 11, but instead of this, an electromagnet 13 may be used as shown in FIG. 10. In such a case, the magnetic pole on the base plate 3 side The part 13a that becomes
The magnetic pole may be changed by a changeover switch 14 that is linked to a rotating shaft in the switch.

Also, regarding the base plate 3, if the movable display plate 1 is rotatably attached directly to the cover 7' as shown in Fig. 11 without using the base plate 3, the number of parts will be reduced and the structure will be even simpler. Cost can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view of a rotary switch with a conventional display method, Fig. 2 is a perspective view of a movable display board used in an embodiment of this invention, and Fig. 3 is an exploded perspective view of the main parts of this invention. FIG. 4 is a partial end side view of this device. FIGS. 5 and 6 are perspective views showing changes in the operation display, and FIGS. 7 and 8 are views showing changes in the operation of the driving magnet, respectively. Partial end side view of No. 9
The figure is a side view of a rotary switch equipped with this invention, and FIGS. 10 and 11 are partial end side views of other embodiments. In the figure, 1 is a movable display board, 3 is a base board, and 6 is a movable display board.
is a transparent dome, 7 is a cover, 8 is a side surface, 11 is a
The driving magnet 12 is a rotating member.

Claims (1)

[Scope of utility model registration request] An appropriate display indicating the operating status is provided on the front and back sides of a display board with different magnetic poles, and this display board is attached to the surface of the rotary switch with an appropriate member so that it can be turned over. A driving magnet having at least one magnetic pole facing the display plate is mechanically or circuit-coupled with the rotation of the rotating shaft of the rotary switch, so that the rotation of the rotating shaft causes the driving magnet to A magnetic sign for a rotary switch, characterized in that the magnetic pole on the display board side is provided so as to change.