JPS58112587A - Electronic control type iron - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to an electronically controlled iron.

As we continue to improve the performance and ease of use of irons, it is natural to consider research into additional functions by selecting electronic components, but irons are used at elevated temperatures, and There is no change in the fact that people still hold the iron in their hands and work on it, and there are many disadvantages to lowering the overall height, which is one of the reasons why irons are easier to use. Even electronic components with highly functional and high performance have the disadvantage of being sensitive to temperature, and some components, such as power transformers, power control elements, and capacitors, are relatively large in shape, and many functions have been added to them. In the case of specifications, effectively incorporating these parts is an extremely difficult task given the limited size of the iron.

Note that some irons that incorporate electronic components have been used in dormitories for some time now, but looking at their form, they are not built into the iron body and are round, but are built into a separate case.
It is electrically connected to the iron body, and as explained above, this does not overcome the problem of KW electronic components being sensitive to temperature. It has become a commodity. In other words, the best way to iron is to iron at a temperature that suits the fiber, be it synthetic fiber, cotton, linen, or steam, and gradually increase the temperature from low to high. This is surprisingly common, and it can be seen that it is troublesome and inconvenient to operate a separate control case each time. In addition, it was inconvenient for general household use because of its poor storage properties.

Another method is to position the control board in the space near the grip where the temperature rise in the iron body is relatively low; It was widely known that it was impossible to increase the size of the current situation when gender was taken into consideration.

Therefore, an object of the present invention is to provide an electronically controlled iron in which electronic circuit components can be incorporated without making the shape and size difficult to use, and in which the electronic circuit components can be sufficiently protected from heat. That's true.

An embodiment of the present invention will be described based on FIGS. 1 to 7. In these drawings, 1 is a pace part of the iron, 2 is a humidity sensing element that detects the temperature of the base part 1, and 3 is a humidity sensing element that detects the temperature of the base part 1.
4 is a cover that covers the base, 4 is a heat shield plate provided on the cover 3, and has a locking claw 41 at the rear of the soil surface and a through hole 4b at the front.
A plurality of convex portions 4c are provided for positioning at any central location.
f, and are fixed to the cover 3 and screws 5 to bosses 4d provided on the lower surface. Reference numeral 6 denotes a handle body consisting of a grip part, a front leg part, a stirrer leg part, and a body part, and is attached to the heat shield plate 4 with the lower surface of the body part open, and the rear part is fitted with the locking claw 41. A locking hole 6m is provided at the curved portion, a boss 6b is provided at a position that protrudes downward from the inner wall of the body portion of the handle body 6 and faces the through hole 4b, and a notch 6' is provided on both sides of the opening.
A stepped portion 6d is partially provided on the inner surface of the opening.
When the locking claw 4aK locks the locking hole 6 of the handle body 6 and tightens the screw 7 through the through hole 4b against the boss 6b, the space A in the rear leg of the handle and the handle body are tightened. A wide space including the inner space B is formed. Therefore, a larger space can be secured by positioning the boss 6b of the handle body 6 as far forward as possible, and positioning the boss portion 81 for tightening and fixing the handle rear cover body 8 as high as possible.

9 is equipped with a power transformer 10.1 on the top surface, a force control element 11, an integrated circuit selected according to the purpose of the specification, a temperature display element 12 arranged for setting the temperature of the iron, and other electronic components, etc. on the bottom surface. It is a control board on which printed wiring is applied, and a part thereof has a hole 9a through which the boss 6b from the inner wall of the body of the handle body 6 is passed, and is mounted through this hole 9a. The control board 9 is fixed so as to be sandwiched between a stepped portion 6d provided on a part of the handle body 6 and a convex portion 4C provided on the heat shield plate 4, and its outer edge 9
b are attached to the inner wall of the body portion of the handle body 6 with only a portion 9C in contact with them at regular intervals.

Reference numeral 13 denotes a hole provided at the rear of the cover 3, and the cut end surface of the hole 13 is smoothed so as not to damage the twisting of the lead wire, which will be described later. Reference numeral 14 denotes a hole provided at the rear of the heat shield plate 4, and similarly provided at a position opposite to the hole 13 of the cover 3, and a terminal block 15 is provided near the hole with a screw 16 or the like.

17 is a heater; 18 and 18' are lead wires whose ends are welded to the heater 17; and 19 and 19' are lead wires from the temperature sensing element 2;
19 and 19' pass through the hole 13.14 and are drawn out to the rear part of the handle body 6, and the leads M18 and 18' are connected to the terminal block 15, respectively. In addition, 1 control board 9
Lead wires 20 , 20 ′ and one end 21 of the power cord are connected to the terminal block 15 . In this case, if the lead wire is the terminal 21' of the power cord that is not affected by heat, the jump lead wires 19 and 19' are connected to the connector 22.
．． It is connected to the control board 9 via 23i.

24 is a water tank provided in the front part of the handle body 6, a button 25 for switching between steam and dry is provided at the top, and an opening/closing nozzle 26 for supplying water to the base part 1 is formed at the bottom. It is controlled by moving the operating stick 27 up and down. When the water supply nozzle 26 opens, the water in the water tank 24 flows into the vaporization chamber 28Kl*FL of the base part 1, and steam is generated.
This steam is ejected from a steam hole (not shown) formed in the base portion 1. Further, the front water distribution tank 24 is provided near the m9 portion and can be removed from the handle body 6 by operating a nine-lock knob 29.

Reference numeral 30 denotes a switch board connected to the control board 9, on which a switch device 31, etc., whose head 311 protrudes beyond the handle body 6 is mounted, and is buried within the grip 9 of the handle body 6 to a minimum size Kli. It is attached by screws 32 to. A lead wire 33 connects the control board 9 and the switch board 30.

The main function of the electron running iron configured in this way is as a temperature detection means for rounding the temperature setting, by replacing the conventional bimetal type with a temperature detection element 2 such as a thermistor, it can be used to detect when the iron is on and when it is off. In addition to reducing the temperature difference during operation, we also reduced the temperature difference between the initial stage and stable temperature after input is turned on, and improved the operating method for setting the temperature from a rotating control knob to a one-touch switching method using a switch. The display method also has features including ease of use, such as adjusting the position of the operating knob with respect to the fiber scale and lighting the light emitting display element provided corresponding to the desired fiber hair. This is something that did not exist before.

In other words, to explain its general structure, it consists of an output switching circuit, and by pressing a switch, a light-emitting display element displays the set temperature selected in accordance with the output of the output switching circuit, and the output switching circuit Resistance selected corresponding to the output and /! of the base l. Thermistor that detects the temperature (
The outputs of the Brifuji circuit including the temperature sensing element 2) are compared by a comparator, and the output of the comparator drives a relay (power control element) to control energization to the heater. In addition,
A detailed explanation of the circuit will be given later.

Structural features related to heat insulation for positioning the control board 9 within the handle space provided at a maximum angle will be described below. When the heater 17 is energized, the base portion 1 is heated, and the cover 3 becomes high in temperature due to conduction heat and side radiation heat, and gives side radiation heat to the heat-transmitting plate 4. Heat shield plate 4
is made of heat-resistant resin and maintains the space necessary for heat to be radiated to the outside through the notch 6C of the handle body 6, so it has an extremely heat insulating effect. Furthermore, since the control board 9 is set on any boss of the heat-transmitting plate 4 in a liquid state, the structure is almost unaffected by conductive heat.

The control board 9 also includes a partial stepped portion 6d provided on the handle body 6.
Since the other outer edge 9b is attached apart from the inner wall of the body of the handle body 6 (the part 9c in FIG. 2) that is in contact with the inner surface of the body of the handle body 6, In addition to being affected by conductive heat, even if water accidentally enters from the light-emitting display element hole 34, the separation between the control board 9 and the inner wall of the body of the handle body 6 will prevent the water from escaping. There is also the advantage that it does not have a negative effect on 9.

In this way, it is possible to maintain a temperature rise that is sufficient for electronic components to withstand, and the large space obtained by this invention also has a large base area, making it possible to mount a considerable number of electronic components. Trance 10. The tall parts such as the relay (power control element 11) are located in the space Ak in the rear leg of the handle, which is highly praised for eliminating design obstacles, and also helps in assembly. Control board 9. W hot plate 4.
It has the advantage of being able to be assembled smoothly and in an orderly manner with the cover 3, and will serve as a foundation for future high-performance secondary irons.

FIG. 7 shows a specific electrical circuit diagram of the electronically controlled iron. In FIG. 7, reference numeral 50 is an AC power source, to which a series circuit of a heater 17 and a normally open relay contact s1m is connected. When current flows through this relay contact 51aei and a relay coil 51b, which will be described later, it closes and energizes the heater 17. A series circuit of a resistor 52 and a capacitor 53 is connected to the friend AC power source fi50. This capacitor 53 serves as a constant voltage DC power source for a control circuit to be described later.

54 is a counter connected in parallel to the capacitor 53 and has a preset function; one end 54a is connected to the capacitor 53;
The other end 54b is connected to the other end of the capacitor 53 and kept at ground potential. A switch 55 (corresponding to 31 in FIG. 1) is connected to one end of the capacitor 53 and the first input terminal 54C1WJK of the ring counter 54 with preset function. 56 is a resistor connected between the second input terminal 54d and the third input terminal 5410 of the ring counter 54 with preset function, and 57 is the resistor 56 and the capacitor 57 connected to the third input terminal 546 of the ring counter 54 with preset function. The time constant of the clock bus for switching the output of the ring counter 54 with the reset function is determined by the value of . 54f. 54g.

54h and 54i are the first output terminal, second output terminal, third output terminal, and fourth output terminal of the ring counter 54 with preset function, respectively, and each of these output terminals 54f
, 54g, 54h, 54m are light emitting display elements 12M $ 12b, 12C, 12d t, respectively.
- is connected to one end of a resistor 58, and the other end of this resistor 58 is connected to one end of a capacitor 53. Note that the circuit diagram shows four light emitting display elements 128a1 as an example.
2b e 12C112d constitutes a set temperature display.

One end of the temperature sensing element 2 is connected to one end of the capacitor 53, and the other end is connected to the inverting input terminal of the comparator 59 (K-connected and connected via a resistor 60 to the second output terminal 54gK of the ring counter 54 with a gliding function, Also, the third output terminal 5 of the ring counter 54 with a preset function is connected via the resistor 61.
4h, and is further connected to the fourth output terminal 541 of the ring counter 54 with a grisset function via a resistor 62.

63 and 64 are resistors connected in series, and this ]f
A column circuit is connected in parallel to capacitor 53. The connection point between the resistor 63 and the resistor 64 is connected to the non-inverting input terminal 59bK of the comparison 'a59.

65 is an IJ %/-coil 51b K connected in series with nine transistors, and this series circuit is connected in parallel to a capacitor 53. Transistor 650 pace V1. The output of the comparator 59 is inputted to the pole via the resistor 66, and when the output of the comparator 59 is at H level, the V-coil 51b is driven and K current flows, closing the relay contact 511. 67 is a diode connected in parallel with the relay coil 51bK.

Next, the operation will be explained.

First, when the AC power supply 50 is connected,
! When the output of the output terminal 54f of the attached limp ring counter 54 is at the L level, current flows to the first light emitting display element 121 and it lights up. 2nd output terminal 54g, 3rd output terminal 54h,
Since the output of the fourth output terminal S4+ is at the H level, the potential at the connection point between the temperature sensing element 2 and the resistor 60 is high, and therefore the input of the inverting input terminal 591 of the comparator 590 is at the non-inverting input terminal 59b. The output of the comparator 59 is high, and the output of the comparator 59 is L level.
Lighting of the light emitting display element 12a indicates an "off" state in which the heater 17 is not energized.

Next, when the switch 55 is closed, the second output terminal 54
Only the output of g becomes L level, and the second light emitting display element 12
b lights up. Further, since the output of the second output terminal 54g is at L level, the potential at the connection point between the resistor 6o and the temperature sensing element 2 becomes low f, and the input of the inverting input terminal 59a of the comparator 59 becomes the non-inverting input terminal 59b. It becomes lower than the input, and the output of the comparator 59 becomes H level. Therefore, transistor 65
But KlaL,! The currents of the coils 51b & Cm flow and the relay contact 51a is closed, so that the heater 17 is energized and the temperature of the pace section 1 increases.

Due to this temperature rise in the base portion 1), the resistance value of the temperature sensing element 2 decreases, and the input level of the inverting input terminal 59J1 and the non-inverting input terminal 59b of the comparator 59 are reversed.
The output of the comparator 59 is inverted and becomes L level, and the heater 1
7 is stopped.

As a result, when the resistance value of the temperature sensing element 2 becomes high, the heater 17 is energized again. Repeat this action,
The temperature of the pace section 1 is maintained at a first predetermined temperature TIVC.

That is, when the second light emitting display element 12b lights up, it means that the set temperature has been set to the first predetermined temperature T1. The resistance value "TH□" of the temperature sensing element 2 at this time is determined by the following equation.

In addition, Rao e R63# R64 are each resistor 6.
Each resistance value of 0.63°64 is shown.

Next, when the switch 55 is closed, the third output terminal 54
Only the output of h becomes L level, and the third light emitting display element 1
2C is turned on and 1M degrees of the pace section 1 is maintained at the second predetermined temperature T2. That is, when the third light emitting display element 12C is illuminated, the resistance value RTH2 of the temperature sensing element 2 at the set temperature is determined by the following equation.

Note that R6 is the resistance value of the resistor 61.

Further, when the switch 55 is closed, the fourth output terminal 5
Only the output of 4i becomes L level, the fourth light emitting display element 12d lights up, and the set lIA degree is #! 30 Predetermined Temperature Predetermined Temperature Table 3. The resistance value RTH3 of the temperature sensing element 2 at this time is determined by the following equation.

Note that R62 is the resistance value of the resistor 62.

As described above, the set temperature is sequentially changed by turning on and off the switch 55, and the relationship between each predetermined temperature T1 e T2 e T3 is determined by the resistance 60°61.
Since each resistance value of 62 is determined by the relationship of R60# R61' R62, by setting s R60>R6□>R62, the temperature of the pace section 1 can be set to low temperature, medium temperature, high/l
iK will be switched sequentially.

As described above, the electronically controlled iron of the present invention includes: a paste part with a built-in heater; a temperature detection element attached to the paste part to detect the temperature of the paste part; and a cover that covers the paste part. Attached to the upper surface of this cover is a friend heat plate, a handle body consisting of a grip section, a front leg section, a rear leg section, and a torso section and attached to the upper surface of the heat shield plate with the lower surface of the torso section open; A temperature control circuit that maintains the temperature of the base portion at a set temperature by controlling energization to the heater based on the temperature detected by the temperature detection element, and components constituting this temperature control circuit are installed. nine boards disposed in a space formed by an i11 heat plate and a body portion of the handle body, and a tall one of the components constituting the humidity control circuit is placed in a space within the rear leg of the handle body. Since the short object is located in the internal space of the handle body, electronic circuit components can be built in without making the shape and size difficult to use, and the heat of the electronic circuit components can be contained. This has the effect of being able to perform Hojun sufficiently.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of an electronically controlled iron according to an embodiment of the present invention, Fig. 2 is an exploded perspective view thereof, Figs. 3 and 4 are perspective views of the main parts thereof, and Fig. 5 is Similarly, FIG. 6 is a sectional view of the main part, FIG. 6 is a perspective view of the main part, and FIG. 1g7 is a 14c9 IC circuit diagram. DESCRIPTION OF SYMBOLS 1... Pace part, 2... Temperature detection element, 3... Cover, 4... Heat shield plate, 6... Handle body, 8... Handle rear lid body, 9... Control Substrate, 17... Heater Fig. 2 Fig. 5

Claims (3)

[Claims] (1) t: A nine base part with a built-in PACE IIK, a temperature detection element attached to this PACE IIK to detect the temperature of the base part, a cover behind the base part, and a temperature detection element attached to the top surface of this cover. It consists of a heat shield plate, a grip part, a front leg part, a rear leg part, and a body part.
A handle body attached to the upper surface of the printing plate; a temperature control circuit that controls the energization of the heater based on the humidity detected by the temperature detection element; and a temperature control circuit that maintains the temperature of the base portion at a set temperature; nine boards on which components constituting the temperature control circuit are mounted and arranged in a space formed by the temperature heating plate and the body of the handle body, the tallest of the components constituting the temperature control circuit; An electronically controlled iron in which an object is located in a space within the rear leg of the handle body, and a short object is located in a space within the body of the handle body. (2) The substrate is held between a convex portion provided on the upper surface of the heat plate and a substrate holder partially provided on the inner surface of the body portion of the handle body, as described in claim (1). Electronically controlled iron. (3) A patent in which the substrate has only a portion of its peripheral edge in contact with the inside of the handle body, and the other peripheral portion is recessed and separated from the inner wall of the body of the handle body. An electronically controlled iron according to claim (1).