JPH06251679A - Automatic closing display device for automatic switch - Google Patents

Abstract

PURPOSE:To display a switch placed in an automatic closed condition by actuating a display device for a magnetic unit or a magnet by a magnetic field formed by a solenoid, in the automatic switch which holds the closed condition by the solenoid. CONSTITUTION:In an automatic switch of holding a closed condition by a solenoid 1, a display device 7 of turnable magnetic body is provided in a magnetic field formed by the solenoid 1. When the automatic switch is placed in an automatic closed condition, a current flows in a coil 10 of the solenoid 1 to form the magnetic field 6, and the display device 7 is turned to display the automatic closed condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic closing display device for an automatic switch.

[0002]

2. Description of the Related Art In a conventional automatic switch, a display device is not provided, or a display device such as a lamp or a light emitting diode (LED) is connected to a power supply circuit for exciting a solenoid even if the display device is provided and is automatically turned on. It is displayed that there is. FIG. 3 shows an example of a connection circuit diagram of a conventional automatic closing display device for an automatic switch. When a voltage is applied between P and N by the automatic turn-on command, the solenoid coil CC204 is excited, and when the switch is turned on, the solenoid coil HC203 is excited and the switch is turned on and held, and at the same time, the lamp is turned on.

[0003]

The prior art has the following drawbacks. (1) Since the lamp 202 is burnt out, it is impossible to display the automatic closing state of the switch. (2) When a light emitting diode is used instead of the lamp 202, it is difficult to determine whether the light emitting diode is lit due to direct sunlight. In addition, the light intensity may decrease due to long-term use, requiring maintenance. (3) Coil HC203 and coil CC20 of the solenoid
Even if there is a disconnection in 4, the lamp 202 or the light emitting diode is turned on, and the display is different from the state of the switch. Therefore, the present invention provides an automatic insertion display device which does not cause erroneous display and requires no maintenance.

[0004]

SUMMARY OF THE INVENTION In the present invention, an indicator made of a rotatable magnetic body or magnet is provided in a magnetic field formed by a solenoid.

[0005]

In the automatic switch-on display device of the automatic switch according to the present invention having the above-described structure, when the switch is in the automatic switch-on state, the indicator made of a magnetic material or a magnet is rotated by the magnetic field lines formed by the solenoid. Display to indicate that the switch is in the automatic closing state.

[0006]

1 and 2 show one embodiment of the present invention. FIG. 1 is a schematic structural view showing a closed state of an automatic switch, and FIG. 2 is a schematic structural view showing an open state. 1 and 2, one end of the lever 3 is connected to the armature 2 of the solenoid 1 and the other end is connected to the movable electrode 5. An opening spring 4 is attached to the lever 3. When the coil 10 of the solenoid 1 is excited, the armature 2 is attracted and the lever 3 connected to the armature 2 rotates counterclockwise to move the movable electrode 5
When the solenoid is energized, the opening spring 4 is stored, and the movable electrode 5 is kept closed as long as the solenoid is excited. When the excitation of the coil 10 of the solenoid 1 is released, the attraction force of the armature 2 is lost, and the movable electrode 5 is opened by the stored force of the release spring 4. A magnetic indicator 7 is rotatably provided in a magnetic field 6 formed around the solenoid 1, and a return spring 8 is connected to the indicator 7. The movable electrode 5 is turned on by exciting the solenoid 1. At the same time, the indicator 7 is rotated by the magnetic field 6 formed by the solenoid 1 to indicate that the solenoid 1 is excited. By releasing the excitation of the solenoid 1, the movable electrode 5 is opened, and at the same time, the magnetic field 6 disappears.
Returns and indicates that the solenoid 1 is in the non-excited state.

[0007]

As described above, the present invention has the following effects. (1) Since the indicator operates by the magnetic field formed by the solenoid, there is no erroneous display due to disconnection or the like. (2) In the case of a lamp, there is a burnout, and in the case of a light emitting diode, there is a decrease in luminous intensity due to long-term use, and replacement is necessary. However, the display device of the present invention does not require maintenance because it is a mechanical display.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram showing a charging state of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram showing an open state of an embodiment of the present invention.

FIG. 3 is a connection circuit diagram showing a conventional example.

[Explanation of symbols]

 1 Solenoid 2 Armature 3 Lever 4 Opening Spring 5 Movable Electrode 6 Magnetic Field 7 Indicator 8 Return Spring 9 Yoke

Claims (2)

[Claims] 1. An automatic switch which holds a closed state by a solenoid, wherein a display of a magnetic material rotatable in a magnetic field formed by the solenoid is provided, and the display is rotated by excitation of the solenoid. Display device for automatic opening and closing of automatic switches. 2. An automatic switch which holds a closed state by a solenoid, wherein an indicator comprising a magnet rotatable in a magnetic field formed by the solenoid is provided, and the indicator is rotated by excitation of the solenoid. Display device for automatic opening and closing of automatic switches.