JPH0122000B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cordless iron in which a power cord is not led out from the iron body.

Conventional Structures and Problems As is well known, in recent years, most irons are electric irons that have a built-in heater and are powered by a power cord led out from the iron body. However, since the power cord of these electric irons extends from the main body, the power cord becomes a nuisance when ironing, and the operating range of the iron is restricted by the length of the power cord. It has the disadvantage of being difficult to store.
Therefore, recently, a separate mounting table is provided which has only a power supply terminal that is electrically connected to the heater without leading out the power cord from the iron body, and which has a power supply terminal that connects to the power supply terminal when the iron body is placed.
An iron has been developed in which the iron body is separated from the mounting table during ironing operations.

This type of cordless iron increases the thickness of the base of the iron body or equips the base with heat storage material to store the amount of heat required for ironing when placed on the stand. In order to properly and reliably control the temperature, a temperature control device must also be installed inside the iron itself, and even if the iron itself is cordless and operability is improved, the iron itself is heavier and heavier than a regular electric iron. However, it has the disadvantage that the operability deteriorates.

Purpose of the invention The present invention focuses on the above-mentioned conventional problems, and
To provide a cordless iron with a compact iron body and improved ironing operability.

Structure of the Invention In order to achieve this object, the cordless iron of the present invention includes a heat-sensitive resistance element of the temperature control device in the iron body, and a temperature control circuit in the mounting table, so that the weight and volume of the iron body can be reduced. This is almost equivalent to not having a temperature control device, and the intended purpose can be achieved.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 are sectional views of essential parts of a cordless iron according to an embodiment of the present invention. The iron main body 1 consists of a base 2 and a handle part 3. A heating element 4 is embedded in the base 2, and in this embodiment, it is filled with a heat storage material 5.
A heat-sensitive resistance element 6 such as a thermistor is provided in the heat storage material 5 to detect the temperature of the heat storage material 5. Power supply terminals 7, 7' are attached to the rear bottom of the handle 3 with one end protruding outward, and are electrically connected to the heating element 4 via power supply lines 8, 8'. Also,
A signal terminal 9 formed of a permanent magnet is attached to the center of the power supply terminals 7, 7'. This signal terminal 9 is electrically connected to one of the terminals of the heat-sensitive resistance element 6 via a signal line 10 . The other terminal of the heat-sensitive resistance element 6 is connected to a power supply terminal 7' via a signal line 10'.

The mounting table 11 is provided with a recess 12 having the same shape as the base 2 for positioning the iron main body 1 when it is mounted. Further, at the rear of the mounting table 11, power supply terminals 13 and 13' and a detection terminal 14 are provided corresponding to the power supply terminals 7 and 7' and the signal terminal 9, respectively. Springs 15, 15' are attached to the power supply terminals 13, 13' to urge them upward and bring them into elastic contact with the power supply terminals 7, 7'. In addition, the detection terminal 14 is formed of a magnetic material such as iron, and when the iron body 1 is placed on the iron body 1, it is attracted to and electrically connected to the signal terminal 9 formed of a permanent magnet. 11, and then connect the power supply terminals 7, 7' and the power supply terminals 13, 1.
3' is ensured. Note that the same effect can be achieved even if the detection terminal 14 is made of a permanent magnet and the signal terminal 9 is made of a magnetic material. These power supply terminals 13, 13' and detection terminal 14 are connected to a temperature control circuit 18 via power supply lines 16, 16' and detection line 17, respectively.

FIG. 3 illustrates the above electric circuit. Temperature control circuit 18 is connected to power supply 19 .

Next, the operation of the cordless iron configured as above will be explained.

First, place the iron main body 1 into the recess 12 of the mounting table 11.
When the base 2 is placed in such a way that the signal terminal 9 made of a permanent magnet and the detection terminal 14 made of a magnetic material are attracted and connected, the power supply terminals 7 and 7' and the power supply terminal 13 are connected. , 13' are also connected. In this state, if the temperature of the heat storage material 5 is lower than the predetermined heat storage temperature, the heat sensitive resistance element 6
Detects the temperature of the heat storage material 5 and sends a signal to the temperature control circuit 18 via the signal terminal 9 and the power supply terminal 7', and the temperature control circuit 18 detects the temperature of the heat storage material 5 via the power supply terminals 7 and 7' to a predetermined heat storage temperature. Heating element 4 to reach
to supply power. In this embodiment, temperature control circuit 18
Although the signal from the heat-sensitive resistance element 6 is directly detected, it may be detected indirectly.

When the temperature of the heat storage material 5 reaches a predetermined heat storage temperature in this way, ironing becomes possible, and the iron main body 1 can be separated from the mounting table 11 to perform ironing without being bothered by the power cord. Once ironing is finished and the iron main body 1 is placed on the mounting table 11 again, the above operations are repeated and the heat storage material 5 is maintained at the heat storage temperature.

As described above, according to this embodiment, the iron main body 1 is provided with the heat-sensitive resistance element 6, and the temperature control circuit 18 is provided on the mounting table 11.
It has become smaller and lighter, and when combined with the cordless design, its operability has greatly improved. Moreover, in the embodiment, since the temperature of the heat storage material 5 is directly detected by the heat-sensitive resistance element 6, the temperature can be controlled more reliably than by a conventional temperature device such as a bimetal type.

Effects of the Invention As described above, the present invention provides the heat-sensitive resistance element of the temperature control device in the iron body and the temperature control circuit in the mounting table, thereby reducing the weight and volume of the iron body. , a cordless iron with improved ironing operability has been realized, and the effects are significant.

[Brief explanation of drawings]

Fig. 1 is a sectional view of main parts of a cordless iron according to an embodiment of the present invention, and Fig. 2 is an A-A in Fig. 1.
The sectional view and FIG. 3 are the same electric circuit diagrams. DESCRIPTION OF SYMBOLS 1... Iron body, 2... Base, 4... Heating element, 6... Heat-sensitive resistance element, 7, 7'... Power supply terminal, 11... Mounting table, 13, 13'... Power terminal,
18...Temperature control circuit.

Claims (1)

[Claims] 1 The iron body is equipped with a base having a heating element and a heat-sensitive resistance element, and a power supply terminal that conducts to the heat generation element, and a mounting table on which the iron body is placed is provided with a base that is in contact with the power supply terminal when the iron body is placed. and a temperature control circuit that detects a signal from the heat-sensitive resistance element and controls the temperature of the heating element.