JPH0117072Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a time switch with power failure compensation that continues to operate during the power failure compensation time after a power failure.

As a time switch with power outage compensation, it rectifies the AC power when the power is on and drives the step motor.
There are types that use a storage battery to drive a step motor during a power outage, and types that use an AC power source to drive a synchronous motor when electricity is on, and generate driving force using a spring mechanism during a power outage. Most of the time switches with power failure compensation include a light emitting element that emits light when energized, and a rotating display plate that rotates in conjunction with the dial plate at a faster rotational speed than the dial plate. In such a time switch, operation can be confirmed when the light emitting element is lit and the rotating display plate is rotating, and operation can be confirmed when the light emitting element is turned off and the rotating display plate is rotating. , it can be confirmed that this is a power outage compensation operation.

However, in the past, the light emitting element and the rotary display board were placed at a relatively distant position, so it was difficult to determine whether the operation was performed when the power was turned on or the operation was performed to compensate for a power outage.
I couldn't confirm it at a glance.

The purpose of the present invention is to solve the above-mentioned problems and provide a time switch with power failure compensation that allows the operating state to be confirmed at a glance.

In order to achieve this objective, the present invention arranges a light emitting element on the back side of the rotating display board, and
The present invention is characterized in that the light transmitting portions through which light from the light emitting element passes are provided at equal intervals on the same circumference, thereby concentrating the energization indication and the rotation indication in one place.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 1 shows an embodiment of the present invention equipped with a step motor. The step motor 1 is normally connected to a rectifier circuit that rectifies an alternating current power supply and is driven to rotate, and in the event of a power outage, it is connected to a storage battery and driven to rotate when a battery switch is turned on. Since such a circuit configuration is already known, it is not illustrated. The rotation of the drive shaft 2 of the step motor 1 is transmitted to the dial plate 4 via the reduction gear mechanism 3. A switch operating pawl 5 is attached to the dial plate 4, and the switch operating pawl 5 turns on or off the switch 6 by contacting it. 7 is a time display pointer.

A rotary display plate 8 is fixed to the drive shaft 2, and a light emitting element 9 is arranged on the back side of the rotary display plate 8. The light emitting element 9 emits light by being supplied with current from a rectifier circuit that rectifies the AC power source. As shown in FIG. 2, the rotating display plate 8 has a light-transmitting notch 10.
The number of light passing cutouts 10 is half the number of steps per rotation of the step motor 1. In the case of FIG. 2, the number of steps per rotation of the step motor 1 is eight, so the number of light passing notches 10 is four. All the light transmitting notches 1 are provided at equal intervals on the circumference corresponding to the position of the light emitting element 8.

In the energized operation, current is supplied from the AC power supply to the step motor 1 through the rectifier circuit, and the step motor 1 rotates. The rotation is reduced by the reduction gear mechanism 3 and transmitted to the dial plate 4. As a result, the dial plate 4 rotates once every 24 hours. On the other hand, the rotating display plate 8 rotates at a much higher speed than the dial plate 4, for example, at 1 rpm. Then, in a certain step, as shown in FIG. 2A, the light-transmitting cutout 10 is located in the front of the light-emitting element 9, so that the light from the light-emitting element 9 passes forward. In the next step, as shown in FIG. 2B, the rotary display plate 8 is positioned in front of the light emitting element 9, so that the light from the light emitting element 9 is briefly cut off. In the next step, as shown in Figure 2C,
Light from the light emitting element 9 passes through. In this way, when the rotation of the rotary display plate 8 causes the light from the light emitting element 9 to pass through and cut off repeatedly, it appears as if the light emitting element 9 is blinking in synchronization with the rotation of the step motor 1. . Therefore, the operation during energization can be effectively displayed.

At the time of a power outage, the light emitting element 9 is turned off, and the step motor 1 is supplied with current from a storage battery, which is a power supply to compensate for the power outage, and rotates. This causes the rotating display plate 8 to rotate. Rotation of the rotary display board 8 without flashing light indicates the power failure compensation operation.

According to this embodiment, simply by looking at the rotary display plate 8, it is possible to confirm whether the operation is during energization or power failure compensation operation.

In the illustrated embodiment, the light passing notch 1 is used as the light passing part.
0 is used, but it may be replaced with a through hole or the like.

As explained above, according to the present invention, a light emitting element is arranged on the back side of the rotating display board, and the rotating display board has a
The light transmitting parts that allow light from the light emitting elements to pass through are provided at equal intervals on the same circumference, and the energization display and rotation display are concentrated in one place, so it is possible to distinguish between operating states. You can check at a glance whether it is operating when the power is on or compensating for a power outage.

[Brief explanation of drawings]

Fig. 1 is a mechanical diagram showing an embodiment of the present invention;
The figure is a front view showing the positional relationship between a light emitting element and a rotary display plate in an embodiment of the present invention. 1...Step motor, 3...Reduction gear mechanism,
4... Dial board, 8... Rotating display board, 9... Light emitting element, 10... Light passing notch.

Claims (1)

[Scope of utility model registration request] A light-emitting element that emits light only when electricity is applied, and a rotating display plate that is rotated not only when electricity is applied but also during power outage compensation to display the rotation of the dial plate, and the light-emitting element emits light and the rotating display plate rotates. In a time switch with power failure compensation, the power failure compensation time switch is configured to display an operation when energized by energizing, and to display a power failure compensation operation by turning off the light emitting element and rotating the rotary display plate,
disposing the light emitting element on the back side of the rotating display plate,
A time switch with power failure compensation, characterized in that the rotary display plate is provided with light transmitting portions that allow light from the light emitting elements to pass therethrough at equal intervals on the same circumference.