JPH0256120B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an iron for general household use.

Conventional structure and problems thereof Conventionally, as shown in FIG. 3, this type of iron has a base 2 in which a heater 1 is embedded, a handle 3 provided above the base 2, and a power supply to the heater 1. and a power cord 5 for supplying power to the heater 1. The temperature setting means 4 is of a dial type, and when the dial is rotated to set the temperature for ironing, the heater 2 is energized and the base 1 is heated so that ironing can be performed.

However, this dial type temperature setting means 4
In this case, once the set temperature was determined by turning the dial, the energization could not be stopped without turning the dial again to the "off" position, which cut off the energization of the heater 2. Therefore, after the worker finishes ironing, if the worker forgets to cancel the temperature setting of the temperature setting means 4 and unplugs the power cord 5 from the power source, and then connects the power cord 5 to the power source again after a while, the power is turned on. Since the previous temperature setting is maintained, electricity starts to be applied to the heater 1 and the base 2 is heated before the operator sets the temperature, and the operator accidentally touches the base 2. If the above operation is performed with the iron placed with the base 2 facing down on a textile item, there is a risk of burning or damaging the textile item, and in the worst case, it may cause a fire. It was hot.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned problems and provides an iron with improved safety.

Structure of the Invention After stopping the power supply to the control means, when power is supplied to the iron, the iron is set to the "off" state, and
By configuring the display device to display the "off" state, when the power cord is unplugged from the power source, the temperature setting means remains in the "off" state, which cuts off power to the heater circuit, even when the power is turned on again. , the iron will not be heated inadvertently, and
The display device can display the "off" state to notify the operator that the temperature has not been set.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In Figures 1 and 2,
6 is a base in which a heater 7 is embedded; 8 is a handle provided above the base 6; 9 is a temperature setting means for arbitrarily setting the temperature of the base 6; a temperature control circuit 11 for controlling energization of the heater 7 and maintaining the temperature of the surface of the base 6 at the temperature set by the temperature setting means 9;
and a power cord that supplies power to the temperature control circuit 10.

Here, the above-mentioned temperature setting means 9 and temperature control circuit 10 will be described in detail.The temperature setting means 9 has a pushbutton 12 and a plurality of
It consists of 13 LEDs, and the set temperature is
The temperature of the base 6 surface is approximately 200°C when the heater 7 is turned off, which is indicated by the LED 13.
There are various stages up to "high". The temperature control circuit 10 inputs a signal outputted every time the push button 12 is pressed through the microcomputer 14, compares it with the output of the temperature sensor 15 attached to the base 6, and processes the signal to set the temperature setting means. In order to maintain the base 6 surface at the temperature set in step 9, power supply to the heater 7 is controlled.

Also, each time the pushbutton 12 is pressed, the set temperature increases from "off" to "high", and the LED
The microcomputer 14 is programmed so that the lighting position of 13 also moves, and when it reaches the "high" position, it returns to the "off" position.

Moreover, when the power cord 11 is unplugged from the power source,
Not only is the power supply to the heater 7 cut off, but also the voltage necessary to drive the microcomputer 14 cannot be obtained, so the temperature setting of the temperature setting means 9 is also automatically canceled. Furthermore, if the power cord 11 is turned on again and the voltage necessary to drive the microcomputer 14 is applied, the temperature setting of the temperature setting means 9 is set to the "off" state, and the heater 7 is energized. Microcomputer 14
The program has been set up.

To explain the operation in the above configuration, when an operator turns on the power cord 11 to iron, the temperature setting is turned off as described above. Next, push button 1 of temperature setting means 9
By pressing 2 to set the desired temperature, the heater 7 starts being energized. moreover,
Even if the worker forgets to turn off the iron's temperature setting when ironing is finished, unplugs the power cord from the power source, and stores the iron, the iron will not be used again. When the power cord is connected to the power source, the iron is in the "off" state, with no power applied to the heater circuit, and when the operator starts using it, push button 1 of the temperature setting means 9
2, the heater 7 is energized for the first time. Therefore, unlike in the past, the temperature of the base 6 rises without the worker being aware of it, causing burns by touching the base 6 by mistake, or even if the base 6 is placed in contact with fibers. It does not burn the fibers or, in the worst case, cause a fire, increasing safety.

In the above embodiment, a temperature control circuit equipped with a microcomputer is used, but the temperature setting of the temperature setting means may be mechanically canceled by unplugging the power cord from the power supply.
Any device may be used as long as the temperature setting of the temperature setting means is canceled by unplugging the power cord from the power source.

Effects of the Invention As described above, the iron of the present invention sets the iron to the "off" state when power is supplied to the iron after stopping the power supply to the control means, and displays the "off" state on the display device. Even if the worker forgets to turn off the iron's temperature setting when ironing is finished, unplugs the power cord from the power source, and stores the iron, the iron will not be used again. When the power cord is connected to the power source, the iron is in the "off" state, with no power to the heater circuit, so the iron may inadvertently heat up unless the operator operates the temperature setting means at the beginning of use. Never.

Therefore, it can be used safely without causing accidental burns or burning clothes. Also, when you connect the power cord to the power source at the beginning of use, it will display that it is in the "off" state.
It is easy to know that the temperature is not set, and at the same time, that power is being supplied to the iron.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of an iron according to an embodiment of the present invention, FIG. 2 is a side view of the main part, and FIG. 3 is a sectional view of a main part of a conventional iron. 6... Base, 7... Heater, 9... Temperature setting means, 10... Temperature control circuit, 14... Microcomputer.

Claims (1)

[Claims] 1. A base heated by a heater, a temperature setting means for setting the temperature of the base to an arbitrary temperature, a display device for displaying the temperature set by the temperature setting means, and energization of the heater. and a power cord that supplies power to the heater, and the temperature setting means
It is possible to switch to the "off" state that cuts off the power to the heater circuit, and the "off" state is enabled when power is supplied to the iron after stopping the power supply to the control means.
The iron is set to the "off" state and displays the "off" state by the display device.