JP2000236603A - Open/closed state indicator for switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of mechanical troubles by reducing the occurrence of impact giving mechanical stresses due to inertial forces. SOLUTION: An opened/closed state indicator for switch is constituted by connecting an opened/closed state indicating plate 2, which is provided with an indicating section 2a indicating the opened/closed state of a switch main body 4 at one end and the central part of which is rotatably attached to a shaft 1 to an open/close driving section 5, which operates interlockingly with the opening/closing operations of the main body 4 to indicate the opened/closed state of the main body by turning the indicating plate 2. The other end of the indicating plate 2 is connected to the driving section 5 with a tension coil spring 8, so that the driving force of the driving section 5 is transmitted to turn the indicating plate 2 via the spring 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching indicator for a switch.

[0002]

2. Description of the Related Art Switching operation of a switch body is usually performed by
It is controlled from a distance by the control device. However, at the time of inspection or when a malfunction occurs in the control device, it is necessary to directly operate the switch body manually, and in that case, a device capable of confirming the open / closed state of the switch body is required. For this reason, an open / close indicator that operates in conjunction with the open / close operation of the switch body and displays the open / closed state of the switch body is used.

FIG. 5 shows an example of a conventional open / close display. The open / close drive unit 5 which operates in conjunction with the open / close operation of the switch body 4 has its center portion rotatably supported by a pin 7. You. One end of a link 6 is connected to a tip of the opening / closing drive unit 5 by a pin 8. The open / close display panel 2 has a display section 2a at its tip for displaying the open / close state of the switch body 4 as "ON" or "OFF", and a central portion thereof is rotatably attached to the shaft 1. A base end of the open / close display panel 2 is connected to the other end of the link 6 by a pin 9.

When the switch body is in the open state of the switch body 4 shown in FIG.
However, "OFF" is displayed, and it can be confirmed that the switch body 4 is in the open state.

In this state, when the switch body 4 is closed and the switch body 4 performs a closing operation, the opening / closing drive unit 5 rotates clockwise about the pin 7 in conjunction with the closing operation. Move. As a result, the other end of the link 6 rotates counterclockwise, so that the open / close display plate 2 rotates counterclockwise about the shaft 1 and the display unit 2a displays “ON”. Therefore, it can be confirmed that the switch body 4 is in the closed state.

[0006]

However, in such a conventional open / close display, the open / close drive unit 5 and the open / close display plate 2 are mechanically and rigidly connected by a link 6, and the open / close drive unit is provided. 5 operates and stops at a high speed due to its nature.
Impulsive and large mechanical stress due to inertial force occurs. Therefore, it is necessary to set the strength of the open / close display so as to withstand this mechanical stress, so that the cost increases. In addition, since the weight increases, the inertia force also increases, causing a problem that the mechanical stress further increases, and there is a disadvantage that the possibility of occurrence of a mechanical trouble increases.

Accordingly, an object of the present invention is to provide a switchgear indicator of a switchgear which can prevent the occurrence of mechanical trouble by reducing the occurrence of shock and large mechanical stress due to inertial force.

[0008]

According to the first aspect of the present invention, there is provided an open / close display plate having a display portion for displaying an open / closed state of a switch body at one end and a central portion rotatably mounted on a shaft. An opening / closing display unit for a switch, which is connected to an opening / closing drive unit that operates in conjunction with the opening / closing operation of the switch body, and that displays the open / closed state of the switch body on the display unit by rotation of the open / close display plate. Connecting the other end of the open / close display plate and the open / close drive unit by a tension coil spring,
The driving force of the opening / closing drive unit is transmitted through the extension coil spring to rotate the opening / closing display plate.

According to a second aspect of the present invention, in the switching indicator of the switch according to the first aspect, a compression coil spring is provided instead of the tension coil spring.

According to a third aspect of the present invention, in the opening / closing display of the switch according to the first or second aspect, a positioning portion for regulating a rotation angle of the display plate is provided near the open / close display plate.

According to the fourth aspect of the present invention, the first and second aspects are provided.
Alternatively, in the switch indicator of the switch according to claim 3, a return spring for applying a reset force to the switch display plate is provided on the shaft.

[0012]

FIG. 1 shows an example of an embodiment of a switching indicator according to the present invention. An opening / closing drive section 5 which operates in conjunction with an opening / closing operation of a switch body 4 has a central portion. Pin 7
To be rotatably supported. The open / close display panel 2 has a display portion 2a at one end for displaying the open / close state of the switch body 4 as "ON" or "OFF", and a central portion thereof is rotatably attached to the shaft 1.

One end of the tension coil spring 8 has an open / close display plate 2.
And the other end thereof is connected to the open / close drive unit 5, respectively. In this case, the tension coil spring 8 is in an extended state when the display portion 2a of the open / close display panel 2 displays "OFF". The turning power in the counterclockwise direction
Set to balance. The opening / closing drive unit 5 is mechanically connected to the switch body 4, and opens and closes the switch body 4 by swinging. The swing of the opening / closing drive unit 5 causes the tension coil spring 8 to be pulled or relaxed.

When the switch body 4 shown in FIG. 1 is in the open state, the display unit 2a of the switch panel 2
Indicates "OFF", and it can be confirmed that the switch body 4 is in the open circuit state.

In this state, when the switch body 4 is closed and the switch body 4 is closed, the switch driving section 5 rotates clockwise about the pin 7 in conjunction with the closing operation. Move. As a result, the tension coil spring 8 is relaxed, the open / close display plate 2 is rotated counterclockwise by the specified weight counterclockwise around the shaft 1 by the own weight return rotational force 9 due to its own weight, and the display unit 2a displays "ON". I do. Therefore, it can be confirmed that the switch body 4 is in the closed state.

In the above operation process, even if the opening / closing drive unit 5 operates and stops at high speed, and the driving force is transmitted to the extension coil spring 8 in an impact manner, the impact force is absorbed by the extension coil spring 8. Therefore, only a gentle driving force is transmitted to the open / close display panel 2. For this reason, it is possible to reduce the occurrence of shocking mechanical stress due to the inertial force, and to reduce the possibility of occurrence of mechanical trouble.

The opening operation of the switch body 4 is performed in a completely reverse operation to the above-described closing operation, and the tensile force of the tension coil spring 8 is transmitted to the open / close display panel 2 as a rotating force, and the open / close display panel is opened. Reference numeral 2 rotates clockwise around the axis 1 and the display unit 2a displays "OFF", so that the details are omitted.

FIG. 2 shows another embodiment of the open / close indicator of the present invention.
The compression coil spring 10 having the connecting rod 11 is used. That is, the compression coil spring 10 is mounted on the other end of the open / close display panel 2 and is provided so as to be compressible by the other end of the connecting rod 11 having one end connected to the open / close drive unit 5. In this case, the compression coil spring 10 is in a compressed state when the display portion 2a of the open / close display panel 2 indicates "OFF", and the compression coil spring 10 is centered on the shaft 1 due to this compression force and the weight of the display panel 2. The counterclockwise turning force is set to be balanced.

In such a switch display, when a closing operation is performed in the circuit state of the switch body 4 shown in FIG. 2, the switch drive unit 5 rotates about the pin 7. As a result, the compression coil spring 10 expands, and the open / close display plate 2 rotates by a specified angle counterclockwise about the shaft 1 by the own weight return rotational force 9 due to its own weight, and the display on the display unit 2a is turned off. Switches to "On".

The opening / closing operation of the switch body 4 is performed in exactly the reverse of the above-mentioned closing operation, and while the compression coil spring 10 is compressed, the open / close display plate 2 is turned clockwise about the shaft 1. Since the display unit 2a rotates and the display unit 2a is switched from “ON” to “OFF”, the impact force of the open / close drive unit 5 is not transmitted to the open / close display panel 2.

FIG. 3 shows an embodiment in addition to the open / close display of the present invention. In the vicinity of the open / close display plate 2, a U-shaped positioning is provided between the display section 2a and the shaft 1. A portion 3 is provided, and the rotation angle of the open / close display panel 2 is regulated. That is, the open / close display plate 2 is provided on the display 2a.
Displays “ON” and “OFF”, the open / close display panel 2
Are in contact with both end portions of the positioning portion 3, respectively, and the rotation thereof is regulated.

In such a switch display, when the switch main body 4 is opened and closed, the extension coil spring 8 or the compression coil spring 10 can stop the switch display plate 2 at a specified angle even if it swings.

FIG. 4 shows another embodiment of the present invention. In the embodiment shown in FIGS. 1 and 2, when the switch body 4 is closed, the open / close display plate 2 is moved by its own weight. The shaft 1 is rotated in the counterclockwise direction by the self-weight return rotational force 9 caused by the above, but in the present embodiment, the shaft 1 is rotated by the return spring 13. That is, the return spring 13 is wound around the shaft 1, one end of the return spring 13 is locked to the open / close display panel 2, and the other end is locked to the positioning portion 3. It is provided so that a spring force acts so as to rotate clockwise. In this case, the spring force of the return spring 3 is
Is set to be slightly smaller than the spring force.

In such an open / close display, when the switch body 4 is closed, the open / close display plate 2 is rotated counterclockwise by the forced return torque 14 from the return spring 13.
The display unit 2a can be quickly switched from “off” to “on”.

[0025]

According to the switching indicator of the switch of the present invention,
Even if the opening / closing drive unit operates and stops at high speed, the impact force is absorbed by the tension coil spring or the compression coil spring, and only the driving force is transmitted to the opening / closing display panel. Therefore, it is possible to reduce the occurrence of shocking mechanical stress due to the inertial force, and to reduce the possibility of occurrence of mechanical trouble.

In the case where the positioning portion 3 is provided in the vicinity of the open / close display, when the open / close display plate is swung by the extension coil spring or the compression coil spring at the time of opening / closing operation of the open / close switch body, the open / close display plate is kept at the specified angle. Can be stopped.

Further, when the return spring is mounted on the shaft, when the switch body is closed, the open / close display plate rotates counterclockwise due to the forced return rotational force of the return spring. It can be switched from "off" to "on".

[Brief description of the drawings]

FIG. 1 is a view showing an example of an embodiment of a switch display of a switch according to the present invention.

FIG. 2 is a view showing another embodiment of the switch display of the switch of the present invention.

FIG. 3 is a diagram showing another embodiment of the switching indicator of the switch according to the present invention.

FIG. 4 is a diagram showing another embodiment of the switch display of the switch of the present invention.

FIG. 5 is a view showing an example of a conventional switch display of a switch.

[Explanation of symbols]

 1 axis 2 opening / closing display board 2a display section 3 positioning 4 switch body 5 opening / closing drive section 7 pin 8 tension coil spring 9 self-weight return rotational force 10 compression coil spring 11 connecting rod 13 return spring 14 forced return rotational force

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kimihiro Shiono 3-1, Yoshino-cho, Nishibiwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside the Nagoya Office of Takatake Seisakusho Co., Ltd. (72) Inventor Satoshi Iwata Yoshino, Nishi-biwashima-cho, Nishi-Kasugai-gun, Aichi 3-chome, No. 1 Takatake Manufacturing Co., Ltd. Nagoya Office F-term (reference) 5G052 AA24 BB06 JA03 JC02

Claims (4)

[Claims] 1. An opening / closing display plate having a display portion for displaying an open / closed state of a switch body at one end and having a central portion rotatably attached to a shaft, interlocked with the opening / closing operation of the switch body. A switch that is connected to an open / close drive unit that operates in the open / close state and that displays the open / closed state of the switch body on the display unit by the rotation of the open / close display plate. The drive unit is connected with a tension coil spring, and the driving force of the opening / closing drive unit is transmitted through the tension coil spring to rotate the open / close display plate. Open / close indicator of the vessel. 2. A switching indicator for a switch according to claim 1, further comprising a compression coil spring in place of the extension coil spring. 3. The open / close display for a switch according to claim 1, wherein a positioning portion for restricting the rotation angle of the open / close display plate is provided near the open / close display plate. 4. The open / close display of a switch according to claim 1, wherein a return spring for applying a return force to the open / close display plate is provided on the shaft.