JP2924407B2 - Cordless iron - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless iron for stretching wrinkles of clothes and the like.

[0002]

2. Description of the Related Art Conventionally, this kind of cordless iron has
As shown in FIG. 4, a base 2 having a heater 1, a temperature detecting means 3 such as a thermistor mounted on the base 2, a temperature signal generating means 4 for generating a temperature signal by an output of the temperature detecting means 3, Control means 13 for judging whether or not the temperature of the base 2 can use steam based on the detection output of the means 3; display means 9 for displaying whether or not steam can be used based on the output of the control means 13; Notification means 14 for notifying that the use of
An iron body 6 having a power supply terminal 5 connected to the heater 1 was provided.

The cordless iron includes a temperature control means 7 for controlling the temperature of the base 2 by opening and closing a relay in response to a transmission signal from the temperature signal generation means 4, an electrode 8 connected to the power supply terminal 5, A mounting portion 10 on which the iron body 6 is mounted, a mounting portion 10 of the iron body 6
It comprises a stand 12 provided with a placement detecting means 11 for detecting placement on the stand.

Then, the temperature of the base 2 is detected by the temperature detecting means 3 to determine whether or not the iron body 6 can use steam, and the control means 13 can use steam as shown in FIG. There is a display means lighting level Von for notifying that there is, and a display means extinguishing level Voff for notifying that steam cannot be used.

[0005] That is, the iron body 6 is
When the heater 1 is energized in a state where the heater 1 is placed, the temperature of the temperature detecting means 3 rises together with the temperature of the base 2 and the display means lighting level V indicates that steam can be used.
When the temperature of the temperature detecting means 3 becomes higher than on, the temperature display means 9 is turned on.

Next, when the ironing body 6 is detached from the stand 12 and ironing is performed, the temperature of the temperature detecting means 3 is lowered together with the temperature of the base 2 to notify that steam cannot be used. When the temperature of the temperature detecting means 3 becomes lower than the light-off level Voff of the display means, the display means 9 is turned off, and when the iron body 6 is not placed on the stand 12, the notifying means 14 such as a buzzer is activated. , The worker was informed that the ironing had become unsuitable.

[0007]

However, in such a structure, as shown in FIG. 5, the display means 9 is turned on, and the temperature of the temperature detecting means 3 is such that steam cannot be used. Display means for notifying that the light-off level Voff
When placed on the stand 12 while approaching the
Despite energization of heater 1, temperature detection means 3
Is lowered for a while (ΔtK).

At this time, if the temperature of the temperature detecting means 3 drops below the display means unlit level Voff at which steam cannot be used, the actual base surface temperature is displayed even though steam can still be used. There is a problem of causing a malfunction such as turning off the means 9, and once the display means 9 is turned off, steam can be used again until the display means 9 is turned on again, that is, placed on the stand 12 and used again. There has been a problem that power must be supplied for a while until the temperature of the temperature detecting means 3 becomes higher than a certain display means lighting level Von.

Therefore, according to the present invention, the display means may malfunction even if it is placed on a stand in a state where the temperature of the temperature detection means is close to the display means turn-off level Voff indicating that steam cannot be used. The aim is to realize an easy-to-use ironing device.

[0010]

In order to achieve the above object, a cordless iron according to the present invention comprises a heater
Base heated by, sense the temperature of this base
Temperature detection means.
The base temperature determines whether steam can be used.
Control means, the use of steam by the output of this control means
Display means for displaying whether or not heating is possible,
Iron having a plurality of power supply terminals connected to the degree detecting means
And the base in response to a signal from the temperature detecting means.
Temperature control means for controlling the temperature of the power supply terminal;
To be connected to the electrode and the iron body
A stand having a section, wherein the control means
Display means for indicating that the system can be used
Display indicating that steam is not available
Means for turning off the light, wherein the iron body is a stand.
The display means off level when placed on the
Temperature lower than the display means turn-off level when leaving
It is set every time .

[0011]

According to the cordless iron of the present invention, the display means is illuminated and the temperature of the temperature detecting means is approaching the display light extinguishing level Voff indicating that steam cannot be used. When placed on a stand with
Since the temperature of the temperature detecting means decreases for a while (ΔtK), even if the temperature of the temperature detecting means drops below the display means non-lighting level Voff1 at which steam cannot be used at the time of departure, the temperature of the temperature detecting means is lowered. Is set to a temperature lower than the level when the iron is removed, so that a malfunction in which the display means is turned off even when the iron body is placed on the stand and energized is eliminated. You can do it.

[0012]

An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 3, reference numeral 20 denotes an iron main body, a base 22 having a heater 21,
2, a tank 24 for storing water disposed above the base 22, a temperature detecting means 25 such as a thermistor for detecting the temperature of the base 22, and the temperature of the base 22 using steam. Display means 19 such as an LED for notifying that the steam is available, and a notifying means 27 such as a buzzer for notifying that the temperature of the base 22 has changed from a state where steam can be used to a state where steam cannot be used. I have.

The iron body 20 has a control means 18 for comparing the output signal of the temperature detecting means 25 with an operational amplifier or the like to drive the display means 19 and the notifying means 27.
A temperature signal generating means 26 which changes according to the output of the temperature detecting means 25;
7 has a power supply 28 such as a capacitor for maintaining the operating power supply voltage, a power supply terminal 29 connected to the heater 21, and an output terminal 30 connected to the temperature signal generating means 26.

Here, a method of setting the light-on and light-off levels in the display means 19 of the control means 18 will be described with reference to FIG. First, whether or not the display means 19 is turned on is determined by a comparator. When the output of the comparator is High, the display is turned off, and when the output is Low, the light is turned on. The temperature signal V3 from the temperature detecting means 15 is as follows: V3 = V × (R2 × R3) / (R1 × R2 + R1 × R3
+ R2 × R3), and the display means lighting level Von is High because the output of the comparator is High. Therefore, if the transistor Q is turned on and the forward voltage of the diode D is Vf, Von = (V−Vf) × R5 / (R4 + R5) Since the output of the comparator is Low, the transistor Q is turned off, and Voff = (V−Vf) × (R5 + R6) / (R4 + R
5 + R6).

As described above, by inserting a non-linear element such as the diode D as a criterion, the extinction level of the display means becomes slightly higher as the power supply voltage V becomes higher. Further, the temperature signal simply moves with respect to the power supply voltage because it simply depends on the ratio of the resistance values of R1 to R3.

Therefore, by setting the power supply voltage V1 at the time of placement to be higher than the power supply voltage V2 at the time of detachment, the display means turn-off level Voff1 at the time of placement is set to a voltage higher than the display means turn-off level Voff2 at the time of detachment. can do. In other words, the higher the temperature, the lower the resistance value of the thermistor. Therefore, the higher the voltage, the lower the temperature.
1 is set to a temperature lower than the display unit turn-off level Voff2 at the time of leaving.

The operation of the above configuration will be described. First, the iron body 20 is mounted on the mounting portion 34 of the stand 31 and the power cord 38 is turned on. In this state, the power supply terminal 29 and the output terminal 3
0, the electrode 32 of the stand 31 and the input terminal 33 come into contact with each other, and power can be supplied, and charging of the power supply 28 in the iron main body 20 is started.

Next, when the required temperature is set by the temperature setting button 36, the temperature control means 37
Is input through the output terminal 30 and the input terminal 33, and the power is supplied to the heater 21 until the set temperature is reached to heat the base 22, and the base 22 is heated until the steam can be used. When the temperature rises and the control means 18 causes the temperature of the temperature detecting means 25 to become higher than the display means lighting level Von, the display means 19 is turned on and becomes usable.

The notifying means 27 is configured to latch in a stopped state until the temperature detecting means 25 reaches a set temperature by the control means 18.

Here, the iron body 20 is connected to the stand 31.
, And ironing by steam is started by operating the steam button 39, the temperature of the base 22 gradually decreases due to heat of vaporization when water is vaporized. Since the power supply 28 secures the power supply of the display means 19, the notification means 27, and the control means 18 for operating them, these operations can be operated by the output of the temperature detection means 25, and are set in advance. It is determined whether or not the temperature of the temperature detection unit 25 has decreased to the display unit turn-off level Voff2 at the time of leaving.

In this state, when the temperature of the temperature detecting means 25 becomes lower than the display means turn-off level Voff2 at the time of leaving,
The display unit 19 is turned off, and the notification unit 27 starts notification. If the iron body 20 is placed on the stand 31 during the notification, the notification means 27 is latched in the stopped state, and the heater 21 is energized again to display the lighting level Von indicating that the steam can be used. Until the temperature of the detecting means 25 rises, the display means 19 is also turned off.

Further, the display device 19 was put on the stand 31 in a state where the display device 19 was turned on and the temperature of the temperature detection device 25 was approaching the display device turn-off level Voff2 indicating that steam could not be used. In this case, even though the heater 21 is energized, the temperature detection means 2
The temperature of the temperature detector 25 is set to be lower by ΔtK than the display unit light-off level Voff1 at the time of placement, while the temperature of the temperature of the temperature detector 25 is set to be lower by ΔtK. No malfunction occurs due to a time delay.

[0023]

As described above, the ironing device of the present invention
The base heated by the heater, the temperature of this base
Temperature detection means to detect, the detection output of this temperature detection means
The temperature of the base is determined whether steam can be used or not.
Control means for judging, steam based on the output of this control means
Display means for displaying whether or not the heater can be used;
And a plurality of power supply terminals connected to the temperature detecting means
An iron body, receiving the signal of the temperature detecting means,
Temperature control means for controlling the temperature of the base,
Place the electrode to be electrically connected and the iron body
A stand provided with a mounting portion, wherein the control means comprises:
Display means to indicate that steam is available
Indicates the light level and indicates that steam is disabled.
And a display means for turning off the iron body.
The level at which the display is turned off when it is
The display means when leaving the stand
Since the temperature is set to a low temperature, the display means that informs that the temperature of the temperature detection means cannot use steam is not displayed. Even if the apparatus is placed on the stand in the state of approaching the light-off level Voff, the malfunction of turning off the display means is prevented. It is possible to realize a cordless iron that is easy to use.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a cordless iron showing one embodiment of the present invention.

FIG. 2 is a circuit diagram around a control means of the cordless iron.

FIG. 3 is an explanatory diagram of operations of a control unit and a display unit of the cordless iron.

FIG. 4 is a sectional view of a main part of a conventional cordless iron.

FIG. 5 is an operation explanatory view of control means and display means of the cordless iron.

[Explanation of symbols]

 18 Control Means 19 Display Means 20 Iron Body 21 Heater 22 Base 25 Temperature Detecting Means 29 Power Supply Terminal 31 Stand 32 Electrode 34 Placement Section 37 Temperature Control Means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D06F 75/26 D06F 75/10 D06F 79/02

Claims (1)

(57) [Claims] 1. A base heated by a heater, temperature detecting means for detecting the temperature of the base, control means for judging whether or not the temperature of the base can use steam based on a detection output of the temperature detecting means; Display means for displaying whether steam can be used by the output of the control means, an iron body having a plurality of power supply terminals connected to the heater and the temperature detection means, and receiving the signal from the temperature detection means, comprising temperature control means for controlling the base temperature, the stand having a mounting portion for mounting said power supply terminal electrically connected to the electrodes, and the iron main body, before Symbol control means, the use of steam Display means lighting level that indicates that the steam is possible, and display means extinguishing level that indicates that the use of steam is not possible ,
A cordless iron wherein the display unit extinguishing level when the iron body is placed on a stand is set to a lower temperature than the display unit extinguishing level when the iron body is detached from the stand.