JPH0824798B2 - Iron - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a safety-enhancing iron used in general households.

2. Description of the Related Art Conventional irons require ironing at a temperature depending on the material of various cloths.Therefore, there is a set temperature changeover switch that changes the temperature of the iron base stepwise according to the target cloth. Having a power supply control means capable of sequentially switching the set temperature when the set temperature changeover switch has been turned on for a predetermined time or longer, the power supply control means controls power supply to the heater to heat the heater. There is.

Problems to be Solved by the Invention However, the conventional iron configured as described above has the following problems.

That is, when the power supply condition is switched by turning on the set temperature switch for a certain period of time or more, the cutting condition → low temperature → medium temperature →
High temperature → off condition → low temperature → ... off condition → low temperature can be set in order and the power supply condition can be set when the switch is turned off, so it is possible to set low temperature condition even if the off condition is set. There is a nature. In this case, the power supply to the base does not stop and the base temperature does not drop, which is not preferable for safety such as burns or a fire.

The present invention solves the above-mentioned conventional problems. When the set temperature changeover switch is turned on for a certain period of time or more, the power supply conditions are sequentially switched, and when the condition reaches the cutoff condition, the switching is stopped. Since the cutting conditions are set in, it is intended to prevent forgetting to cut due to mistakes in setting and to provide a safer iron.

Means for Solving the Problems To achieve this object, the present invention provides an iron base, a heater for heating the iron base, a handle fixed to the iron base, and a set temperature for setting the iron base temperature. A changeover switch, an indicator for displaying the power supply condition to the heater corresponding to the temperature set by the set temperature changeover switch, and a setting when the on-time of the set temperature changeover switch is a predetermined time or more. A power supply control means for sequentially switching a power supply condition corresponding to temperature and a power supply condition corresponding to an off state in which power supply to the heater is stopped is provided, and the power supply control means turns on the set temperature switching switch for a predetermined time or more. If
The power supply condition is sequentially switched, and when the power supply condition is turned off, the switching is stopped.

With this configuration, in the case of power supply condition setting, even when the set temperature changeover switch is continuously turned on for a certain time or more to switch the power supply condition, the condition switching stops under the off condition and the off condition is reliably set. It is possible to prevent forgetting to turn off when switching power supply conditions and improve safety.

EXAMPLES Examples of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an iron base.
2 is a handle. In the iron base 1, a heater 3 for heating the base, a temperature sensitive element 4 for detecting the temperature of the base, and a temperature fuse 5 are built in. The heater 3, the temperature sensitive element 4, the set temperature switching switch 6 and the display LED section 7
Are connected to the control circuit 8. The control circuit 8 uses the output of the set temperature switching switch 6 as an input signal to output the on-time detection circuit 9, the output of the on-time detection circuit 9 as an input signal, the output switching circuit 10, and the output of the output switching circuit 10 to display the LED section. 7
The power control for comparing the output of the display control circuit 11 and the output switching circuit 10 for turning on and the temperature information of the iron base 1 obtained through the thermistor 4 to turn on / off the switching element 12 connected in series to the heater 3 It is composed of a circuit 13 and. Further, 14 is a commercial AC power supply and 15 is a voltage dividing resistor. The control circuit 8 and the switching element 12 correspond to a power supply control means for the heater. FIG. 2 shows an example of the display LED section 7 and the set temperature changeover switch 6. The set temperature changeover switch 6 has LED 16 indicating the cutting condition, and the set temperature is changed from the lower set temperature to the lower one. LED 17 shown, LED 18 showing B, and so on are similarly provided with display LEDs as shown in FIG.

The output switching circuit 10 sends to the power control circuit 13 each time the set temperature switching switch 6 is turned on, a seven-step instruction signal for switching power supply conditions, that is, off, conversion A, conversion B, conversion C, ... Outputs hemp instruction signal. When the on-time is longer than a predetermined time, the on-time detection circuit 9 counts the time, and thereafter, outputs a switching signal to the output switching circuit so that the power supply condition is sequentially changed. When the desired power supply condition is met, the condition is set when the set temperature changeover switch 6 is turned off. Further, if the set temperature switching switch 6 is kept on, the output switching circuit 10 switches the power feeding condition, but when the "linen" condition is passed and the "off" condition is reached, the power feeding condition switching is forcibly stopped. Therefore, when the power supply condition is switched again, the set temperature switching switch 6 is turned off once, and then switched. If the set temperature switching switch 6 is turned on for a certain period of time, the count of the on-time detection circuit 9 is cleared each time, and the output switching circuit 10 is notified each time the switch is pressed. Switch.

The operation of the iron configured as described above will be described below.

First, when the power is turned on, the "OFF" LED of the display LED section 7
16 lights up. At this time, the switching element 12 of the power control circuit 12 is in the off state. Here, when the set temperature changeover switch 6 is turned on within a fixed time, the output changeover circuit 10 outputs a signal of the power supply condition of "Chemical A". As a result, the power control circuit 13 compares the temperature information of the base 1 by the temperature sensitive element 4 and controls the switching element 12 to be turned on and off so that the temperature condition of the base 1 becomes "Chemical A". At this time, in the display LED section 7, the LED 17 of "Chemical A" is lit. next,
When the set temperature switching switch 6 is turned on within a fixed time, the output switching circuit 10 switches the power feeding condition and outputs a signal of the power feeding condition of "Chemical B", and the power control circuit 13 causes the base 1 to "Chemical B".
The switching element 12 is controlled to be turned on and off so that the temperature becomes. In the display LED section 7, the LED 18 of "Chemical B" lights up. Thus, every time the set temperature switching switch 6 is turned on within a predetermined time, the power supply condition signal from the output switching circuit 10 is cut off → Chemical A → Chemical B → Chemical C → Hair → Cotton → Hemp → It is sent out in the order of off → → → hemp → ..., whereby the control state of the power control circuit 13 is switched and the temperature of the iron base 1 is maintained at the set temperature. In addition, the switch for setting temperature 6
Is kept on for a certain time or longer, the on-time detection circuit 9
The output switching circuit 10 sequentially switches the power supply conditions in response to the signal from, and sets the power supply conditions when the set temperature switching switch 6 is turned off. Further, even if the set temperature changeover switch 6 is continuously pressed, if the "OFF" condition is reached, the switching of the power supply condition is forcibly stopped, and once the set temperature changeover switch 6 is turned off, the power supply condition is switched again so that the output is changed over. The circuit 10 is configured so that the power supply condition can be changed simply by turning on the set temperature changeover switch 6, and moreover, if the set temperature changeover switch 6 is continuously pressed, the cutoff condition can be surely set. it can.

By providing the display unit such as the LED unit 7 or the like, the worker can easily confirm the power supply condition by indicating the power supply condition at that time, which is more convenient and easy to use.

EFFECTS OF THE INVENTION The present invention switches the set temperature by the power supply control means that sequentially switches the power supply conditions when the on time of the switch for setting the temperature is longer than a predetermined time and forcibly stops when the power supply condition becomes the off condition. The off condition can be set by a simple operation of turning on the power switch. Therefore, it is possible to surely turn off the power supply to the heater without erroneous operation, and to realize a safe and convenient iron that does not forget to turn off. Also,
If you press and hold the switch for setting temperature for a predetermined time, the temperature setting will be switched sequentially, so its operability is good.
Even if the set temperature changeover switch is pressed and held for a long time, the switch always stops in the cut state, so that the cut state can be surely set even in the sequential change state, and the setting error of the cut state can be surely prevented.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a display.
It is a layout of an LED section. 1 ... Iron base, 2 ... Handle, 3 ... Heater, 6
...... Set temperature changeover switch, 7 ...... Display LED section, 8 ...
... control circuit.

Claims (1)

[Claims] 1. An iron base, a heater for heating the iron base, a handle fixed to the iron base, a set temperature changeover switch for setting the iron base temperature, and a set temperature changeover switch. An indicator for displaying the power supply condition to the heater corresponding to the temperature, and the power supply condition corresponding to the set temperature and the power supply stop to the heater when the ON time of the set temperature changeover switch is a predetermined time or more. Power supply control means for sequentially switching the power supply conditions corresponding to the off state is provided, and the power supply control means sequentially switches the power supply conditions when the set temperature switching switch is turned on for a predetermined time or more, and also supplies power. An iron that stops switching when the conditions are cut.