JPH08131697A - Cordless steam iron - Google Patents

Abstract

PURPOSE: To provide a cordless iron capable of adjusting the steam generation amount to the one corresponding to the base setting temperature and extending the life of secondary battery for driving the water supplying means. CONSTITUTION: This cordless steam iron is equipped with an iron main body 1 and a base to lay the iron main body 1. The iron main body has a heater 2, an electric pump 36 to supply water in a water tank 6 into a vaporizing room 22, a charging type secondary battery 44 to supply power to the electric pump 36, and a control part 43 to control power supplied to the electric pump 36 from the secondary battery 44 corresponding temperature set by a temperature setting switch. When the iron main body is laid on the base, power is flown in the heater 2 and the secondary battery is charged. After the power charged in the secondary battery 44 by repeating laying reached a designated amount, charging to the secondary battery 44 is stopped by a excessive charging prevention means for a designated time regardless of laying the iron main body 1 onto the base.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless steam iron used for press finishing of clothes and the like.

[0002]

2. Description of the Related Art Generally, a cordless steam iron is
It is composed of an iron main body and a mounting table for mounting the iron main body. The iron body has a base with a heater, a vaporization chamber formed in a part of the base, a water tank for storing water to be supplied into the vaporization chamber, and the water in the water tank is vaporized in the vaporization chamber. A water supply means for supplying to the
Further, the mounting table is provided with a power supply terminal which is electrically connected to the power supply and which is brought into contact with the power supply terminal to be energized.

When the iron body is placed on the mounting table, the power supply terminals on the iron body side come into contact with the power supply terminals on the mounting table side to be energized. As a result, the heater is energized to heat the base. Under this condition, when the iron body is taken out of the mounting table and the steam button is operated, the water in the water tank is supplied to the vaporization chamber of the base in appropriate amounts by the water supply means, and this water is vaporized by the heat of the base. Becomes steam, and this steam gushes from the bottom surface of the base in sequence. Then, the lower surface of the base is pressed against the cloth for ironing.

In such a cordless steam iron, the power cord does not get in the way during ironing work and is more convenient than an iron with a power cord.

On the other hand, in a conventional steam iron with a power cord having a structure in which the power cord is directly connected to the iron body, an electric pump is used as a water supply means for supplying the water in the water tank into the vaporization chamber of the base. It is known to have been made. When an electric pump is used as the water supply means, it is possible to adjust the amount of water supplied to the vaporization chamber, and therefore, in the case of fabric such as hemp that is ironed at a high temperature, the amount of water supplied to the vaporization chamber is increased. The amount of steam generated can be increased, and in the case of a fabric that is ironed at a low temperature such as synthetic fiber, the amount of water supplied to the vaporization chamber can be reduced to reduce the amount of steam generated.

However, in the cordless steam iron of the type in which power is supplied to the iron body through the power supply terminal provided on the mounting table, when the iron body is taken out of the mounting table, the power supply to the iron body is cut off, so that water is supplied to the iron body. It is not possible to incorporate an electric pump as a means and drive the electric pump during ironing work to generate steam.

[0007] Therefore, the applicant of the present invention, the electric water supply means in the iron body, a rechargeable secondary battery for supplying electric power to the water supply means, from the secondary battery according to the set temperature of the base A control means for controlling the amount of electric power supplied to the water supply means is provided, and when the iron body is taken out from the mounting table and ironing work is performed, electric power is supplied to the water supply means by the secondary battery to set the base. We have developed a cordless steam iron that can generate an amount of team depending on the temperature.

As the secondary battery, a rechargeable battery such as a nickel-cadmium battery is used, and when the iron body is placed on the mounting table, the secondary battery is sequentially charged by the power source on the mounting table side. did.

[0009]

In such a structure, the secondary battery is repeatedly charged and discharged frequently. However, a secondary battery such as a nickel-cadmonium battery has a cycle life determined by the number of times charging and discharging are repeated (in JIS, it is defined as 500 times or more).

Therefore, if the secondary battery is repeatedly charged and discharged each time the iron body is placed on and removed from the mounting table, the secondary battery reaches the end of its life relatively early, which is economical. Not only is it disadvantageous, but it also has the drawback that the replacement time is accelerated and usability becomes poor.

The present invention has been made by paying attention to such a point, and an object thereof is to automatically change the steam generation amount to an amount corresponding to the base set temperature in response to switching of the base set temperature. It is an object of the present invention to provide a cordless steam iron which can be adjusted and which extends the life of the secondary battery incorporated in the iron body, which is economically advantageous and easy to use.

[0012]

In order to achieve such an object, the present invention provides a cordless steam iron including an iron body and a mounting table for mounting the iron body, wherein the iron body comprises: A base heated by the heating means, a vaporization chamber formed in a part of the base, a water tank for storing water to be supplied into the vaporization chamber, and an electric type for supplying water in the water tank to the vaporization chamber. A water supply means, a rechargeable secondary battery that supplies electric power to the water supply means, and a power supply terminal that receives power supply,
Temperature setting means for switching and setting the set temperature of the base,
Control means for controlling the amount of power supplied from the secondary battery to the water supply means to a large amount when the set temperature is high and a small amount when the set temperature is low according to the set temperature by the temperature setting means. The mounting table for mounting the iron body, and a power supply terminal for contacting the power supply terminal and energizing the iron body when the iron body is mounted on the mounting body. In a non-energized state in which the iron body is taken out from the mounting table, the water supply means is driven by power supply from the secondary battery controlled by the control means to vaporize the water in the water tank. In the energized state in which the iron body is supplied to the room and placed on the mounting table, the heating means is energized by the power supplied to the power supply terminal through the power supply terminal, and the secondary battery is charged and mounted. Table After the charge amount of the secondary battery reaches a predetermined value in response to repeated placement of the iron main body, the secondary charging from the power source terminal is performed by the overcharge prevention means regardless of the placement of the iron main body on the mounting table. The charging of the battery is stopped for a predetermined time.

[0013]

In the cordless steam iron thus constructed, when the iron body is used, the iron body is first placed on the placing table. Along with this placement, the power supply terminals on the iron body side come into contact with the power supply terminals on the placing table side to be in an energized state.

As a result, the heating means is energized by the power supplied to the power supply terminal via the power supply terminal to heat the base, and the secondary battery in the iron body is charged. After that, when the iron body is taken out of the mounting table, the secondary battery discharges to the electric water supply means, the water supply means is driven by the electric power from this discharge, and the water in the water tank enters the vaporization chamber of the base. The water is supplied and vaporized by the heat of the base to become steam, and this steam is sequentially ejected from the lower surface of the base. In this state, the lower surface of the base is pressed against the cloth for ironing.

Here, when the temperature setting means sets the set temperature of the base to a low temperature, the control means controls so that the amount of electric power supplied from the secondary battery to the water supply means is reduced, whereby the vaporization chamber is controlled. The amount of water supplied to the plant will decrease and the amount of steam generated will decrease. Further, when the set temperature of the base is set to a high temperature, the control unit controls the amount of electric power supplied from the secondary battery to the water supply unit to increase, thereby increasing the amount of water supply into the vaporization chamber, The amount of steam generated increases.

When the iron body is placed on the placing table again, the heating means is energized and the secondary battery is charged. In this way, the iron body is repeatedly placed on and removed from the placing table, the secondary battery is charged during the placing, and the secondary battery is discharged during the taking out. As the above is repeated, the voltage is gradually accumulated in the secondary battery.

When the iron body is repeatedly placed and taken out several times to reach the predetermined amount of charge in the secondary battery, this is detected by the overcharge preventing means, and in response to this detection, the overcharge preventing means is detected. After that, the charging is controlled so that the charging of the secondary battery is stopped for a predetermined time regardless of the placement of the iron body. Therefore, even if the iron body is placed on the placing table after that, the secondary battery is not charged. Is not charged. Then, when the iron body is taken out from the mounting table, the water supply means is driven by the electric power already sufficiently stored in the secondary battery.

Therefore, the number of times the secondary battery is repeatedly charged and discharged during the entire ironing time is significantly reduced. For this reason, the life of the secondary battery is extended, which is economically advantageous, and the secondary battery can be used for a long period of time without requiring replacement and the usability is improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show the overall structure of the cordless steam iron.
Is a die-cast base 3 in which a heater 2 as a heating means is cast, the upper surface of the base 3 is covered with a heat shield cover 4, and a handle 5 is mounted on the heat shield cover 4. is there. A water tank 6 of a cassette type is detachably attached to the front part of the iron body 1.

An operating portion 7 is provided on the upper surface of the handle 5, and a power supply terminal 10 for receiving power is provided on the rear end surface of the handle 5.
Is provided. The operation section 7 is provided with a temperature setting switch 8 and a use mode setting switch 9.
The temperature setting switch 8 is used as a heating means and a temperature setting means for switching and setting the set temperature of the base 3 according to the types of cloth “linen” “cotton” “hair” “chemical 3” “chemical 2” “chemical 1”. And an off operation means for setting the heater 2 to be turned off and set to "off", and a use mode setting switch 9 sets an operation mode of the iron to switch between a steam operation mode and a dry operation mode. Constitutes a means.

It should be noted that the temperature setting means and the off operation means may be constituted by separate switch mechanisms. On the other hand, the mounting table 11 on which the iron body 1 is mounted has a mounting portion 12 formed on the upper surface thereof, and a plurality of guide rollers 13 ... Is provided on the upper surface of the mounting portion 12, and these guide rollers 13 ... When the base 3 of the iron body 1 is put on the iron body 1 and the iron body 1 is released, the iron body 1 is placed on the mounting portion 1.
2 is slid to the rear end side, the rear end surface of the iron body 1 abuts against the front surface of the standing wall 14 on the rear end side of the mounting portion 12, and the iron body 1 is placed in an inclined state in which the mounting portion 12 is inclined upward. It is supposed to be held on top of.

A power supply terminal 15 is provided on the front surface of the standing wall 14, and the power supply terminal 15 is electrically connected to a commercial power supply through a power supply cord (not shown) led from the mounting table 11. Then, the iron body 1 is the mounting portion 1 of the mounting table 11.
The iron body 1 is placed on the rising wall 1
When abutting against the front surface of 4, the power supply terminal 10 of the iron body 1 comes into contact with the power supply terminal 15 to be in a conductive state.

FIG. 3 shows the internal structure of the iron main body 1. The iron main body 1 is provided with a heat shield plate 21 on the upper surface of the base 3, and the upper surface of the heat shield plate 21 is covered with the heat shield cover 4.
And the handle 5 is mounted on the heat shield cover 4.

A heater 2 is cast in the base 3 and a vaporization chamber 22 is formed on the upper surface thereof. The inside of the vaporization chamber 22 is a steam ejection hole 2 provided on the lower surface of the base 3.
It is connected to the lower surface side through 3. A temperature sensor 20 such as a thermistor that detects the temperature of the base 3 is mounted on the base 3.

A water passage joint 24 is provided between the heat shield plate 21 and the heat shield cover 4, and an opening 25 is formed on the upper surface of one end side of the water passage joint 24, and is pushed inside the opening 25. A rod 26 is formed, and the upper end portion of the push rod 26 has an opening 25.
It projects through above through the water joint 24. An outflow portion 27, which is located on the opposite side of the push rod 26 and communicates with the opening 25, is formed inside the water passage joint 24.

An outlet 28 and a valve mechanism 29 are provided at the bottom of the water tank 6 which is detachably attached to the front part of the iron body 1, and the valve mechanism 29 is slidably supported by a support body 30. Disc-shaped valve element 3 in the middle of the valve rod 31
2 is attached, and this valve body 32 is elastically biased via a spring 33 in the direction in which the outlet 28 is arranged, that is, in the direction of closing the outlet 28.

The outflow port 28 is the opening 2 of the water through fitting 24.
5 in a liquid-tight manner, and in this state, the push rod 26 of the water passage joint 24 abuts the valve rod 31 and pushes the valve body 32 upward against the spring 33, whereby the outlet 28 is opened. The water held in the water tank 6 and stored in the water tank 6 passes from the outlet 28 through the opening 25 to the outflow portion 27 of the water through fitting 24.
It is designed to flow in.

A water injection port 34 is formed in the upper portion of the front surface of the water tank 6, and a water injection lid 35 is provided on the water injection port 34. The water injection lid 35 is opened to enter the water tank 6 from the water injection port 34. Water can be appropriately injected.

Further, the iron body 1 is provided with, for example, an electromagnetic electric pump 36 as an electric water supply means above the water passage joint 24. The electric pump 36 has a suction port 37 at the lower end and an upper end. Has a discharge port 38, an electromagnetic coil 39 is provided on the outer periphery, a plunger mechanism 40 is incorporated inside, and the plunger mechanism 40 is driven by the electromagnetic coil 39 to reciprocate up and down,
By this reciprocating operation, water is sucked from the suction port 37 and discharged from the discharge port 38.

The suction port 37 of the electric pump 36 is connected to the outflow portion 27 of the water passage coupling 24 and communicates with the inside of the outflow portion 27, and the discharge port 38 is formed of a heat resistant rubber having flexibility. The discharge pipe 41 is connected.

An outflow hole 42 penetrating vertically is formed in an intermediate portion of the water passage joint 24, and a lower end portion of the outflow hole 42 is arranged in an opening portion on an upper surface of the vaporization chamber 22 and is disposed in the vaporization chamber 22. It is in communication.

The discharge pipe 41 attached to the discharge port 38 of the electric pump 36 is curved in a substantially U-shape and its tip is connected to the upper end of the outflow hole 42. By this connection, the inside of the discharge pipe 41 is It communicates with the inside of the vaporization chamber 22 through the outflow hole 42.

In the iron body 1, a control section 4 as control means for controlling the heater 2 and the electric pump 36.
3 is provided. Further, inside the rear end wall of the handle 5, a battery storage chamber 46 surrounded by the partition wall 45 and the rear end wall of the handle 5 is provided. Inside the battery storage chamber 46, a power source for driving the electric pump 36. As a rechargeable secondary battery 44, such as a nickel-cadmium battery, is stored.

The secondary battery 44 is charged through the control unit 43 by the power supplied from the power supply terminal 15 of the mounting table 11 to the power supply terminal 10 of the iron body. The amount of charge at this time is in a relationship that exceeds the amount of discharge that the secondary battery 44 discharges when driving the electric pump 36. Then, the iron body 1 detects the charge amount of the secondary battery 44, and when the charge amount reaches a predetermined value, the control unit 43 stops the charge of the secondary battery 44 and overcharges the secondary battery 44. Overcharge prevention means 47 for preventing the above is provided.

On the other hand, the standing wall 14 of the mounting table 11 is provided with mounting detection means for detecting the mounting of the iron body 1. The placement detecting means includes a detection pin 50 provided on the lower portion of the front surface of the standing wall 14 and a detection switch 51 that opens and closes a contact according to the operation of the detection pin 50.

The detection pin 50 is provided so as to project from the inside of the front surface of the standing wall 14 to the outside thereof.
0 is elastically pressed by an elastically deformable actuator 51a provided in the detection switch 51, and the tip of the detection pin 50 elastically projects forward from the front wall surface of the standing wall 14 by this pressing force. Is urged to.

When the iron body 1 is placed on the placing table 11 and the rear end surface of the iron body 1 collides with the front surface of the standing wall 14, the detection pin 50 resists the elastic force of the actuator 51a. The contact of the detection switch 51 is turned on by the operation of the detection pin 50. A recess 5a is formed on the rear end surface of the handle 5, and the power supply terminal 10 has the recess 5a.
The detection pin 50 projects inward of a and is pressed by the rear end surface of the handle 5 on the side of the recess 5a.

Further, the iron body 1 is provided with a tank detecting means for detecting whether or not the water tank 6 is arranged.
The tank detection means is composed of a detection pin 52 provided on the handle 5 and a detection switch 53 that opens and closes a contact according to the operation of the detection pin 52.

The detection pin 52 is provided so as to be capable of projecting and retracting from the handle 5 toward the outside thereof, and the detection pin 52 is elastically pressed by an elastically deformable actuator 53a provided in the detection switch 53. The tip of the detection pin 52 projects from the wall surface of the handle 5 by the pressing force and elastically abuts on the rear end surface of the water tank 6 mounted on the iron body 1, and from this state, the water tank 6 is
When it is removed from the detection pin 52, the detection pin 52 elastically projects largely from the wall surface of the handle 5 by the elastic force of the actuator 53a.
The contact is turned off.

FIG. 4 shows a block diagram of a circuit configuration of the iron body 1. The control unit 43 is the iron body 1
Is mounted on the mounting table 11, and the power supply terminal 10 is mounted on the mounting table 1.
When the temperature of the base 3 is set by the temperature setting switch 8 under the energized state in which it is in contact with the power supply terminal 15 of No. 1, the energization of the heater 2 is started. Then, the temperature of the base 3 detected by the temperature sensor 20 is monitored, and the energization of the heater 2 is controlled to be on / off so that the detected temperature is maintained at the temperature set by the temperature setting switch 8.

In this energized state, the power supply terminal 15
The secondary battery 44 is a power source supplied to the power supply terminal 10 via
To charge. On the other hand, when the iron body 1 is taken out from the mounting table 11 and the power supply terminal 10 is in the non-energized state in which the power supply terminal 10 does not contact the power supply terminal 15, when the steam operation mode is selected by the use mode setting switch 9, the secondary operation is performed. The electric power of the battery 44 is supplied to the electric pump 36 to drive the electric pump 36. At this time, when the set temperature of the base 3 is set high by the temperature setting switch 8, the power supply amount is controlled to be large, and when it is set low, the power supply amount is controlled to be small.

Next, the operation of the cordless steam iron thus constructed will be described based on the control sequence shown in FIG. When the iron body 1 is used, first, as shown in FIGS. 1 and 2, the iron body 1 is placed on the placing portion 12 of the placing table 11 and brought into an energized state. When the iron body 1 is placed on the mounting table 11, the detection pin 50 is pressed by the rear end surface of the iron body 1, and the contact of the detection switch 51 is turned on based on this.
It is detected that the iron body 1 is placed on the placing table 11.

Under this condition, when the steam operation mode is selected by the use mode setting switch 9 at the time point t0 and a high temperature, for example, "hemp" is selected as the set temperature of the base 3 by the temperature setting switch 8, the heater 2 The charging of the secondary battery 44 is started at the same time when the energization of the secondary battery 44 is started.

While the iron body 1 is placed on the placing table 11, the temperature of the base 3 rises, and the temperature of the base 3 is sequentially detected by the temperature sensor 20. When the temperature detected by the temperature sensor 20 reaches the set temperature of the base 3 set by the temperature setting switch 8, ironing work can be performed, and this is notified by the control unit 43 by an alarm (not shown) or the like. The energization of the heater 2 is on / off controlled so that the heater 3 maintains its set temperature.

At time t1, when the iron body 1 is taken out of the mounting table 11 and the ironing work is started, the heater 2 is separated by the distance between the power supply terminal 15 and the power supply terminal 10.
Is cut off, and charging of the secondary battery 44 is stopped. And since the steam operation mode is selected,
The secondary battery 44 discharges the electric pump 36, and the electric power drives the electric pump 36.

Along with this, the water in the water tank 6 flowing into the outflow portion 27 of the water through joint 24 is sequentially sucked into the electric pump 36 from the suction port 37 by the operation of the electric pump 36.
While being sent into the discharge pipe 41 through the discharge port 38, this water is supplied from the discharge pipe 41 into the vaporization chamber 22 through the outflow hole 42, and this water is vaporized by the heat of the base 3 to become steam, and this steam is steam. It spouts sequentially from the spout 23.

At this time, since the set temperature of the base 3 is set to a high temperature by the temperature setting switch 8, a large amount of electric power is supplied from the secondary battery 44 to the electric pump 36 under the control of the control unit 43, so that the electric pump is driven. The amount of water supplied to the inside of the vaporization chamber 22 by the pump 36 increases, and a large amount of steam corresponding to the high temperature setting of the base 3 is generated and jetted. In addition,
At this time, when the set temperature of the base 3 is set to a low temperature, for example, “chemical 2 (chemical fiber)” by the temperature setting switch 8, a small amount of electric power is supplied from the secondary battery 44 to the electric pump 36. The amount of water supplied to the inside of the vaporization chamber 22 by the electric pump 36 decreases, and a small amount of steam commensurate with the low temperature setting of the base 3 is generated and ejected.

At time t2, when the ironing work is interrupted and the iron body 1 is returned and placed on the mounting table 11, the discharge from the secondary battery 44 to the electric pump 36 is cut off and the electric pump 36 is stopped. At the same time, energization of the heater 2 and charging of the secondary battery 44 are started.

At time t3, when the iron body 1 is taken out of the mounting table 11 again, the heater 2 is de-energized, and the charging of the secondary battery 44 is stopped and switched to discharge. 36 is driven.

Normally, the actual ironing work time is 2
In about 0 seconds, the placing time for placing the iron body 1 on the placing table 11 is about 10 seconds. During the placing time, the heater 2 is energized and the secondary battery 44 is charged. It

In this way, the iron body 1 is repeatedly placed and taken out on the placing table 11, the secondary battery 44 is charged during the placing, and the secondary battery 44 is discharged during the taking out. The amount of charge during the placement is higher than the amount of discharge during the placement, so that the voltage is gradually accumulated in the secondary battery 44 as the placement and removal are repeated.

FIG. 6 shows the relationship between the voltage accumulated in the secondary battery 44 and the passage of time associated with the placement and removal of the iron body 1, and as shown in this figure,
The charge amount exceeds the discharge amount of the secondary battery 44, and the voltage is gradually accumulated in the secondary battery 44.

Then, for example, at time t6, the iron body 1 is placed on the mounting table 11, and from this placement, time 7
If the amount of charge of the secondary battery 44 reaches a predetermined value (full charge) before the time elapses, this is the overcharge prevention unit 4
7 is detected, and in response to this detection, overcharge prevention means 4
After that, the charging of the secondary battery 44 is controlled by 7 for a predetermined time, for example, one hour, regardless of the placement of the iron body 1.

Therefore, even if the iron body 1 is placed on the placing table 11 after the time t7, the secondary battery 44 is not charged. Then, when the iron body 1 is taken out from the mounting table 11, the electric pump 36 is driven by the electric power already sufficiently stored in the secondary battery 44.

When the ironing work is completed, the iron body 1 is placed on the mounting table 11 at time t14.
When the temperature is set to "OFF" by operating the temperature setting switch 8 at time t15 immediately after that, the heater 2 is turned off.

While the iron main body 1 is being taken out of the mounting table 11 and ironing is being performed,
When the use mode setting switch 9 is operated to switch from the steam operation mode to the dry operation mode, the electric pump 36 is de-energized by the control of the control unit 43 according to this operation, and the electric pump 36 is stopped. Conversely, when the dry operation mode is switched to the steam operation mode while the iron main body 1 is taken out of the mounting table 11 and the ironing work is being performed, the electric power is controlled by the control unit 43 according to this operation. Secondary battery 4 for pump 36
4 is supplied and the electric pump 36 is driven. Further, when the iron body 1 is placed on the placing table 11, if the dry operation mode is switched to the steam operation mode, the electric pump 36 is not driven during the placement, and the iron body 1 When 1 is taken out from the mounting table 11, the electric power of the secondary battery 44 is supplied to the electric pump 36 to drive the electric pump 36.

On the other hand, when the water tank 6 is removed from the iron body 1, the contact of the detection switch 53 in the tank detection means is turned off in response to the removal, and the energizing circuit of the electric pump 36 is opened. When the water tank 6 is attached to 1, the contact of the detection switch 53 in the tank detection means is turned on, and the electric circuit of the electric pump 36 is closed.

As described above, in the cordless steam iron according to the present embodiment, the amount of steam generated can be adjusted according to the set temperature of the base 3 which is set according to the type of cloth to be ironed.
Then, the secondary battery 44 for driving the electric pump 36 is repeatedly charged and discharged according to the placement and removal of the iron body 1 on the mounting table 11, and the secondary battery 44 is repeated several times. After the amount of charge of the iron reaches a predetermined value, the charging of the secondary battery 44 is stopped regardless of the placement of the iron body 1, and therefore, the entire ironing work time (typically about 40 minutes) is maintained. The number of times the secondary battery 44 is repeatedly charged and discharged is significantly reduced. Therefore, the life of the secondary battery 44 is extended, which is economically advantageous, and the secondary battery 44 can be used for a long period of time without requiring replacement, which improves usability.

[0059]

As described above in detail, according to the present invention,
The amount of steam generated can be adjusted according to the set temperature of the base that is set according to the type of fabric to be ironed, and the life of the secondary battery that drives the water supply means can be extended to improve economy and usability. Can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing the overall configuration of a cordless steam iron according to an embodiment of the present invention.

FIG. 2 is a side view in which a part thereof is cut away.

FIG. 3 is a cross-sectional view showing the internal structure of the iron body of the cordless steam iron.

FIG. 4 is a block diagram showing a circuit configuration of the iron body.

FIG. 5 is a control sequence diagram for explaining the operation of the embodiment.

FIG. 6 is a graph showing the relationship between charge and discharge of the secondary battery over time in the example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Iron main body 2 ... Heater (heating means) 3 ... Base 6 ... Water tank 8 ... Temperature setting switch (temperature setting means) 10 ... Power supply terminal 11 ... Mounting stand 12 ... Mounting part 15 ... Power supply terminal 22 ... Vaporization chamber 36 ... Electric pump (water supply means) 43 ... Control section (control means) 44 ... Secondary battery 47 ... Overcharge prevention means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display H02J 7/34 A

Claims (1)

[Claims] 1. A cordless steam iron comprising an iron main body and a mounting table for mounting the iron main body, wherein the iron main body is formed on a base heated by heating means and a part of the base. Vaporization chamber, a water tank for storing water to be supplied to the vaporization chamber, an electric water supply means for supplying water in the water tank to the vaporization chamber, and a rechargeable type for supplying electric power to the water supply means. A secondary battery,
A power supply terminal for receiving power supply, temperature setting means for switching and setting the set temperature of the base, and an amount of electric power supplied from the secondary battery to the water supply means according to the set temperature by the temperature setting means are set to a set temperature. Is equipped with a control means for controlling a large amount when the temperature is high and a small amount when the set temperature is low, and the mounting table includes a mounting part for mounting the iron body, and the mounting part. A power supply terminal that contacts the power supply terminal to bring the iron body into an energized state when the iron body is placed on the iron body. The water supply means is driven by power supply from a secondary battery to supply the water in the water tank into the vaporization chamber, and the power supply terminal is connected to the power supply terminal in an energized state where the iron body is placed on the mounting table. After energizing the heating means with a power source supplied via the secondary battery and charging the secondary battery, after the amount of charge of the secondary battery reaches a predetermined value in response to repeated placement of the iron body on the mounting table, Is a cordless steam iron, wherein the charging of the secondary battery from the power supply terminal is stopped for a predetermined time regardless of whether the iron body is placed on the placing table by the overcharge preventing means.