JPH0236120B2 - - Google Patents

Description

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

Conventional configurations and their problems While it is natural to consider research into high-additional functions by adopting electronic components in order to further improve the performance and usability of irons in the future, electronic components that can add a large number of functions are also being considered. Irons have the disadvantage of being sensitive to temperature, and the biggest challenge for irons with bases that can reach temperatures of around 200 degrees Celsius has been to mount electronic components below the usable temperature. For this reason, looking at the form of conventional irons that have been put into practical use by adopting electronic components, first of all, they are not built into the iron body, but are built into a separate case of the iron body and electrically connected to the iron. In addition, as shown in FIG. 1, a heat dissipation plate 2 with a power control element 1 attached thereto was generally brought into close contact with a cover plate 4 at the rear of the handle 3 to enhance the heat dissipation effect.

However, the former configuration has the problem that the case gets in the way during ironing work, and that it is not easy to store after use.

In addition, in the latter configuration, although there is a heat dissipation effect for the power control element, various electronic controls are performed using not only the power control element but also many other electronic components such as microcomputers, ICs, and capacitors. ,
Detects the heat on the base surface with a thermistor, receives a signal from the thermistor, and controls the power control element so that the base surface temperature reaches a specified temperature.
If you want to enhance the function of lighting or blinking an LED corresponding to the fiber temperature depending on the base surface temperature, or detecting if you forget to turn off the power and automatically turn off the power, use the control circuit shown above. When a board carrying a board is built into the main body, the space in which the board can be stored is limited to the space 5 at the rear of the handle 3 shown in FIG. Once the board is installed in this space 5, if the user rests his hands and leaves it in the heel rest state for a while in the usage pattern peculiar to ironing work, where the horizontal state and heel rest state are repeated, the board will Because it is located above the heat dissipation area,
There was a problem in that electronic components mounted on the board were heated by hot air rising from the heat sink.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides an electronically controlled iron with improved usability and high reliability.

Configuration of the Invention The electronically controlled iron of the present invention includes a base having a heater, a handle body disposed on the base,
An outer lid body forming a space behind the handle body and away from directly above the base, a power control element for controlling power supplied to the heater, and a heat sink to which the power control element is attached. and a board on which electronic components are mounted, the heat sink and the board are arranged in the space, and the heat sink is provided closer to the handle body than the board, and with this configuration,
Improved usability, and also based on electronic components,
It also prevents the influence of heat from the heat sink.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In Figures 2 and 3, 10
12 is a base having a heater 11, and 12 is a base 10.
Mounted on the base 10 is a thermistor that properly senses temperature. 13 is a cover that covers the base 10; 14 is a handle body attached to the cover 13;
15 is a power control element such as a triax that controls the power supplied to the heater 11;
Since it generates heat by itself, it is attached to a heat sink 16 made of aluminum or the like with good heat conduction. Reference numeral 17 denotes a board on which electrical components 18 such as a microcomputer, an IC, and a capacitor are mounted, and each electronic component 18 constitutes a control circuit that receives signals from the thermistor 12 and controls the power control element 15 and the like. A connection terminal 19 is attached to the rear end of the base 10 via an insulator 20 such as ceramic, and is used to electrically connect a power cord 21, a lead wire 22 from the board 17, and the like. 23 is an inner lid body, and a heat sink 16 is attached to this with screws 2.
It is attached by 4. 25 is the handle body 14
The outer lid body is attached to the rear of the handle body 14 to form a space 26, and the rear part 14a of the handle body 14 is attached to the rear part 14a of the handle body 14 in this space 26.
Therefore, the heat sink 16 and the board 17 are received in this order, and the interval between the heat sink 16 and the board is designed so that the electronic component 18 mounted on the board 17 does not directly touch the heat sink 16.

To explain the operation in the above configuration, when the user rests his hands and leaves the heel rest while ironing, the hot air from the heat sink 16 rises in the direction of the arrow, as shown in Fig. 3. However, since the board 17 is located below the heat sink 16, each electronic component 18 mounted on the board 17 is placed below the heat sink 16.
It will no longer be heated by the hot air from the
Highly reliable electronic control can be performed. Furthermore, the space 26 formed by attaching the outer lid 25 to the rear of the handle 14 is located at the rear, away from the base 10, and is located above the base 10 even when the iron body is in the heel rest state or horizontal state. Since the base 10 is not located at the base 10, it is not affected by the heat generating base 10, and furthermore, the ambient temperature becomes lower as the distance from the rear part 14a of the handle body 14 approaches the inner surface 25a of the outer lid body 25. On the other hand, when comparing the usable upper limit temperature of the power control element 15 to which the heat sink 16 is attached and each electronic component 18 mounted on the board 17 with respect to the ambient temperature of this space 26, it is found that the power control The upper limit temperature of the element 15 is higher than that of each electronic component 18 such as a microcomputer, an IC, etc., and the heat sink 16 is placed in the space 26 from the rear part 14a of the handle body 14, and then the board 1
7 in this order, the configuration meets the upper limit of the usable power control element 15 and electronic component 18, and further improves reliability.

It is also possible to attach a board and a heat sink to the outer cover and use it as a control unit.By making it into a unit, assembly efficiency is improved and it is also possible to easily check whether the control circuit is operating correctly. be.

Effects of the Invention As is clear from the above embodiments, the electronically controlled iron of the present invention is particularly suitable for the space formed by attaching the outer lid body behind the handle body and away from directly above the base. By installing the heat dissipation plate closer to the handle body than the board, when the iron is placed on the heel rest during a short break during ironing, the hot air from the heat dissipation plate is dissipated directly to the upper side, that is, to the handle body. Ru. Therefore, the substrate placed on the lower side is not heated by the hot air of the heat sink, and the base and It is possible to provide an electronically controlled iron that exhibits the unique effects of an iron without being affected by hot air from a heat sink, improves usability, and is highly reliable.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main part of a conventional electronically controlled iron, Fig. 2 is a sectional view of the main part of an electronically controlled iron according to an embodiment of the present invention, and Fig. 3 is a sectional view of the main part showing the heel rest state. FIG. 10... Base, 11... Heater, 14... Handle body, 15... Power control element, 16... Heat sink,
17... Board, 18... Electronic component, 25... Outer lid, 26... Space.

Claims (1)

[Claims] 1. A base heated by a heater, a handle body disposed above the base, an outer lid body forming a space behind the handle body and away from directly above the base, and A power control element for controlling power supplied to the heater, a heat sink to which the power control element is attached, and a board on which electronic components are mounted, the heat sink and the board being arranged in the space, and the heat sink An electronically controlled iron that is installed with the iron located closer to the handle body than the board.