JP2640085B2 - 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 capable of notifying when to reheat a base during ironing.

[0002]

BACKGROUND OF THE INVENTION The most inconvenient use of a cordless iron is that during ironing it is not known at all whether the temperature of the base is adequate.

[0003] In consideration of such points, for example,
The cordless iron disclosed in Japanese Unexamined Patent Publication No. 2-196194 has an iron body provided with a battery and a charging circuit for operating a temperature detecting element and an appropriate temperature notification circuit. When the temperature drops, the appropriate temperature notification circuit operates to notify the user that the base temperature has dropped.

However, if the buzzer is used to notify the time when the temperature of the base falls below a certain level, for example, the buzzer volume cannot be set to a large amount to suppress battery consumption. It is possible to escape. If the sound of the buzzer is missed, the state becomes the same as in the case of the conventional cordless iron without the appropriate temperature notification means, and it becomes impossible to distinguish whether the base temperature is the appropriate temperature state.

In view of the above, in the cordless iron disclosed in European Patent Application Publication No. 225298, while a base temperature is in a high temperature state, a display constituted by light emitting diodes is turned off to set an appropriate temperature state. When the base temperature drops below a preset temperature, the display is turned on to display a non-suitable temperature state until the base temperature is increased to a predetermined temperature. Further, a buzzer can be used instead of the light emitting diode.

[0006]

However, according to the above-described configuration for notifying the appropriate temperature state by turning off the display,
The display is turned off even when the base is not heated, such as when the power cord is disconnected and power is not supplied to the mounting table, or when the base is not heated. There is a risk of touching the base and causing burns by mistakenly turning off the light, and conversely, the user mistakenly turns off the indicator as "appropriate temperature display" and started ironing. However, it was not possible to reliably perform the appropriate temperature notification, for example, in a non-heated state.

[0007] Further, it is difficult to know the point of transition from the proper temperature state to the non-suitable temperature state by the notification only by the display. There is a problem that it is difficult to stick.

In view of the above, the present invention has been made in consideration of the above points, and can more reliably notify whether or not the temperature of the base is in an appropriate temperature state during ironing, thereby improving operability and safety. It is an object of the present invention to provide a cordless iron that can increase the power.

[0009]

SUMMARY OF THE INVENTION The present invention provides an iron body having a base heated by a heating means, a mounting table on which the iron body can be mounted, and which is energized to the iron body at the time of mounting. In the cordless iron comprising: the notification means has a buzzer and at least an indicator provided on the iron body, until the base drops to a temperature unsuitable for ironing after removing the iron body from the mounting table. The display is turned on, and the buzzer sounds for a predetermined time after the display is turned off.

[0010]

According to the present invention, the notifying means has a buzzer and a display provided at least on the iron body, and the display is provided until the base drops to a temperature not suitable for ironing after the iron body is detached from the mounting table. Is turned on, and the buzzer sounds for a predetermined time after the display is turned off, so that the lighting state of the display at hand of the user surely informs the user whether or not the temperature is appropriate at any time during ironing. And improve the workability of ironing. Further, even if the user does not notice that the display is turned off, the buzzer subsequently sounds to inform the base that the temperature has become non-optimal, and to more reliably report whether the temperature is appropriate.

[0011]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 will be described. (1) is an iron body composed of the following members. (2) is a base, (3) is a heater embedded in the base, (4) is a thermistor for temperature detection fixed to the base (2), and (5) is fixed to an upper surface of the base (2) and An iron cover provided with a grip (7) having a recess (6) at the rear and having a protrusion (8) formed at the rear, (9) is a first printed circuit board housed and fixed in the recess (6), (10) ) Is a display lamp provided on the front side of the first printed circuit board and exposed to the outside of the iron body, (11) is a second printed circuit board housed and fixed in the protrusion (8), and (12) is the first printed circuit board A grip cover covering the upper surface of (9), (13) is a back plate covering the second printed circuit board (11) and fixed to the iron cover (5), and provided with an engagement recess (14) at a lower portion thereof. At the same time, a projection (15) projecting most rearward is provided at the lowermost portion of the engagement recess. (16) is fixed to a substantially central portion of the engagement recess (14), and the heater (3) and the first
A plurality of connectors (17a) (17b) (17c) (17d) (17e) (17) for supplying power to the printed circuit board (9) and the second printed circuit board (11).
The power receiving pin (f), (18) is a tank detachably mounted in front of the iron cover (5).

A mounting table (19) for mounting the iron body (2) is constituted by the following members. (20) is the bottom plate, (21)
Is an upper plate having a space (22) formed between it and the bottom plate,
(23) and a bulging portion (25) having a hole (24) provided in the vicinity of the engagement receiving portion, and an inclined operation / display portion (26) connected to the bulging portion.
Is provided. (27) is an inverted U-shaped stand provided on the front side of the upper surface of the upper plate (21), (28) is a drain hole provided at the bottom of the engagement receiving portion (23), and (29) is one side. The swelling part (25) by the shaft (30)
An opening / closing plate pivotally supported in the other side so that the pressing piece (30) on the other side can freely protrude into the engagement receiving portion (23), and the pressing piece (30) is spring-loaded as shown by a two-dot chain line. (Not shown), always engaging receiving part
The hole (24) is closed by a shielding piece (31) provided so as to protrude and urge into the inside (23). (32) is a U-shaped power supply plate provided in the bulging portion (25), (33) is a cord winding device provided in the space (22), and a plug provided at the tip of the cord (34) (see FIG. (Not shown). (35) is an operation board provided on the lower surface of the operation / display section (26), and has a plurality of indicators (36) (36). A switch (37) and a down switch (38) for lowering the set temperature are provided. (39) is a reed switch provided in the bulging portion (25), and the iron body (1) is mounted on a mounting table.
(19) When placed on the back plate (1) of the iron body (1)
The magnet is turned on by the magnet provided in 3) <(40) shown in FIG. 2>.

Next, the schematic electric circuit shown in FIG. 2 will be described. The connectors (17a), (17b), (17c), (17d), (17e), and (17f) connect the electric components provided when the iron body is placed on the mounting table (19). It is provided on the iron body (1) and the mounting table (19). (41) is an AC power supply.

First, the circuit of the electric component mounted on the first and second printed circuit boards (9) and (11) provided on the iron body (1) side will be described. (42) is a power supply circuit connected between the connector (17a) and the connector (17f), and the indicator lamp (10) is connected to the power supply circuit (42) via a switching transistor (43) and a resistor (44). It is connected. (45) is the resistor (44), the switching transistor (43) and the indicator lamp (1).
The first capacitor having a relatively large capacity connected in parallel to the series circuit of (0) serves as a power supply for lighting the display lamp (10).
(46) is a first diode connected to the first capacitor (45), and (47) and (47) are constant current diodes connected between the base and the emitter of the switching transistor (43). The constant current diodes (47) (47), the resistor (44), and the switching transistor (43) are a constant current circuit that keeps the current flowing from the first capacitor (45) to the display lamp (10) constant. And the brightness at the time of lighting of the display lamp (10) is made constant.

(48) The switching transistor (43)
The bias resistor connected to the base of (49) is the power supply circuit
Latch means connected to (42). This latch means
A first transistor (50), a second transistor (51), a resistor (52) connected between the base and the emitter of the first transistor (50), and a resistor (52) connected between the base and the emitter of the second transistor (51); The resistor (53) and the first transistor (50)
A resistor (54) connected between the collector of the first transistor (51) and the base of the second transistor (51), and a resistor (55) connected between the base of the first transistor (50) and the collector of the second transistor (51). ) And a diode (56), and a diode (57) connected between the bias resistor (48) and the collector of the second transistor (51).

(58) is a charging capacitor having a relatively small capacity connected between the emitter of the first transistor (50) and the emitter of the second transistor (51).
9) The collector potential of the second transistor (51) is held in a latched state. (59) connects the collector to the second transistor (5
Connect to the base of 1) and connect the emitter to the second transistor (50)
The base is connected to the connector (17c), and is turned on by a trigger signal on the mounting table (19). (60) is the connector (17d) and the second
A trigger signal connected to the base of the transistor (51) and supplied to the mounting table (19) is supplied to the base of the second transistor (51), and the potential change of the latch means (49) is affected on the mounting table (19). This is a blocking diode that is not provided. The thermistor
(4) is connected between the connector (17e) and the connector (17f), and the heater (3) is connected between the connector (17b) and the connector (17f).

Subsequently, an operation board provided on the mounting table (19) side
(35) will be described. (61) is a relay provided in the space (22) and having a relay contact (62) connected between one side of the AC power supply (41) and the connector (17b). (63) is a relay having the up switch (37). ) And a down switch (38) for setting the temperature of the base (2), and (64) displays the temperature set by the output of the temperature setting means on a display (36) ... (36). (65) is a temperature detecting means connected to the thermistor (4) via a connector (17e), and (66) is a lead turned on by the magnet (40) when the iron body (1) is placed. A proximity switch such as a switch, (67) first comparing means for comparing the setting data of the temperature setting means (63) with the temperature data of the temperature detecting means (65) and controlling the relay (61), (68) Is second comparing means for comparing the setting data of the temperature setting means (63) with the temperature data of the temperature detecting means (65), and the temperature data of the temperature detecting means (65) is Until it matches the setting data of temperature setting means (63), connector (17c) by output (0 ₁ )
And outputs an OFF trigger signal to the base of the absorbing transistor (59) via the connector (17), and when the values match, the second transistor (51) is turned on via the connector (17d) by the output (0 ₂ ) and the latch means (49) Drive).

(69) The temperature data of the temperature detecting means (65) and the temperature setting means (69) are provided under the condition of the output of the proximity switch (66) which detects that the iron main body (1) is mounted on the mounting table (19). 63) is compared with the setting data, and when the respective
A predetermined time is counted by the output of the proximity switch (66) when the iron body (1) is detached from the mounting table (19). (70) is a buzzer that is provided on the mounting table (19) side and that sounds for a certain period of time by the output of the timer when the timer (69) finishes counting for a predetermined time,
This is to urge the user to place the iron body (1) on the mounting table (19). When the buzzer (70) starts sounding,
The latch of the latch means (49) is released and the display lamp (1
(0) is turned off by the timer (69), and the time is set by the charging capacitor (58) and the latch means (4).
It is set in advance in consideration of the lighting time of the display lamp (10) determined by the value of the impedance (resistance in the discharge circuit) of 9).

Next, the operation will be described with reference to FIGS. When the base surface of the iron body (1) is placed on the stand (4), the iron body (1) descends due to its own weight and the protrusion
(15) enters the engagement receiving portion (23) and presses the pressing piece (30).
For this reason, the opening / closing plate (29) rotates, the shielding piece (31) unblocks the hole (24), each connector comes into contact with the power supply plate (32), and the engaging recess (14) in the rear portion of the iron main body. The bulge portion (25) is loosely coupled to the proximity switch (66) by the magnet (40).
The state becomes the N state.

When the up switch (37) is operated to set the temperature (t _{1 in} FIG. 3) according to the cloth, the display circuit (64) turns on the display corresponding to the set temperature. In addition to the temperature setting, the first comparing means (67) supplies the temperature detecting means (6) based on the set data and the resistance value of the thermistor (4).
5) The temperature data output from
Since the temperature of (2) is low and the resistance of the thermistor (4) is large, the respective data do not match and the output of the first comparing means (67) drives the relay (61) to turn on the relay contact (62). The heater (3) is energized through the connector (17b) and the connector (17f) to heat the base (2) (point (a) in FIG. 3), and the base (2) is heated to the set temperature (t ₁ ) Until the relay contacts (62)
Is turned on. On the other hand, the above-mentioned temperature setting data and the detected temperature data of the thermistor (4) are also input to the second comparing means (68), but the output (0 ₁ ) is generated because the respective data do not match.
The OFF trigger is output via the connector (17c) to turn off the absorption transistor (59). For this reason,
The second transistor 51 and the first transistor 50 are OF
Since the F state is maintained and the collector potential of the second transistor (51) is high, the switching transistor (43) is
In the FF state, the display lamp (10) does not light. However, during the period in which the display lamp (10) is turned off, a predetermined voltage is supplied from the power supply circuit (42) by the AC power supplied from the connector (17a) and the connector (17f) from the first diode (46).
And a first capacitor which appears through a second diode (71).
(45) and the second capacitor (58) are charged.

When the base temperature reaches the set temperature (t ₁ ), the set data on the input side of the first comparing means (67) and the temperature data coincide, the relay contact (62) is turned off, and the second comparing means (67) is turned off. Since the setting data on the input side of (68) and the temperature data also match, an ON trigger is output from the output (O ₂ ) via the blocking diode (60), and the second transistor (51) and the first transistor are output.
The transistor (50) is turned on to be in the latched state, and since the collector potential of the second transistor (51) is lowered, the switching transistor (43) is turned on, the display lamp (10) is turned on, and the base temperature is set to the set temperature Indicates that has been reached. On the other hand, the timer (69) which detects that the set data and the temperature data match and has reached the set temperature is set to 0.
Is reset to As described above, when setting data> temperature data, the relay contact (62) is turned on to energize the heater (3). When setting data ≦ temperature data, the relay contact (62) is turned off.
At F, the power supply to the heater (3) is stopped to maintain the set temperature (t ₁ ).

When the ironing operation is performed, the iron body (1) is detached from the mounting table (19) (FIG. 3C). At this time, all the connectors (17a)
(17f) is disconnected and the power supply to the power supply circuit (42) as well as the heater (3) is cut off. However, since the latch means (49) is held in the latched state by the electric charge of the second capacitor (58), the switching transistor (43) is ON, so that the display lamp (10) is connected to the first capacitor (45). The lighting state is maintained by the discharge current. As the time of the ironing operation elapses, the voltage across the first capacitor (45) gradually decreases, but the brightness of the indicator lamp (10) is substantially reduced by the constant current circuit including the constant current diodes (47) and (47). It will be constant. In addition, proximity switch (66) with detachment of iron body (1)
Becomes OFF, the timer (69) starts counting a predetermined time. Eventually, when the base temperature gradually decreases and reaches a temperature that is not suitable for ironing (FIG. 3t ₂ ) (point (d) in FIG. 3), the time period from the temperature (t ₁ ) to the temperature (t ₂ ) is reduced. The latch state is released by the time constant based on the set value of the second capacitor (58) and the impedance value of the latch means (49), the switching transistor (43) is turned off, and the display lamp (1)
0) turns off to notify the user that the temperature has become unsuitable for ironing. The setting of the time from (c) to (d) in FIG. 3 by the above-mentioned time constant is performed at the optimum temperature (t) when, for example, the cloth is moist due to the recent "kasen".
_{The reference is from 1} ) to the temperature (t ₂ ) which is not suitable for ironing of “kasen”.

When the display lamp (10) is turned off in this way, the iron body (1) is re-mounted on the mounting table (19) and the heater (3) is energized again to heat the base (2) ( However, if the user does not notice the turning-off state of the indicator lamp (10) or delays noticing, the timer (69) is turned off after the indicator lamp (10) turns off. After the counting of the predetermined time is completed, the buzzer (70) of the mounting table (19) sounds for a predetermined time (about 5 seconds) to urge the user to mount the iron body (1) on the mounting table (19) (FIG. ) Point). Thus, the indicator lamp (1
The re-mounting is prompted by turning off the light of (0) and sounding of the buzzer (70), so that the user can be reliably notified. When the iron body (1) is mounted on the mounting table (19) while the buzzer (70) is sounding, the proximity switch (66) is turned on again, so that the function of the timer (69) is stopped and the buzzer (70) is turned off. Stop ringing immediately. Thereafter, the above operation is repeated.

Incidentally, the buzzer (70) is turned off when the display lamp (10) is turned off.
There is a time interval before the buzzer starts to sound.If the iron body (1) is placed on the mounting table (19) during that time, the function of the timer (69) stops and the buzzer (70) sounds. Therefore, if the display lamp (10) is used with care when turned off, the number of times the buzzer (70) sounds can be suppressed, and the generation of harsh sounds can also be suppressed.

In the present invention, the time during which the latch means is latched after the iron main body is placed is fixed, but it may be made variable in accordance with the set temperature (cloth). For example, if the set temperature is high such as "hemp", shorten the latch time and set a higher temperature (t ₂ ) that is not suitable for ironing, and if the set temperature is low such as And set (t ₂ ) to a lower value.

[0026]

According to the present invention, as described above, the notification means has a buzzer and at least an indicator provided on the iron body, and until the base drops to a temperature unsuitable for ironing after the iron body is detached from the mounting table. The display is turned on, and when the base reaches the temperature, the display is switched off and the buzzer sounds. As described above, the re-mounting is promoted by the two means of switching off the display lamp and sounding the buzzer, so that the user can be reliably notified. Also, as mentioned above,
Since the iron body is detached and the display is turned on during the appropriate temperature, the iron body is not heated and the display is turned off, such as when power is not supplied to the mounting table or when `` off '' is set It can be clearly distinguished from the case where it is, and it is possible to reliably inform the user that the operation is performed at an appropriate temperature. Further, as described above, the buzzer sounds when the temperature of the base becomes unsuitable while the iron body is detached, and stops the sound after a predetermined time. As a result, it is possible to prevent generation of a harsh sound due to the buzzer continuing to sound while the base is not at an appropriate temperature. Further, if the iron body is placed on the mounting table while the buzzer is sounding, the buzzer is stopped from sounding, so that it is possible to prevent the buzzer from continuing to sound.

[Brief description of the drawings]

FIG. 1 is a cross section of a cordless iron showing one embodiment of the present invention.

FIG. 2 is an electric circuit diagram of the embodiment.

FIG. 3 is a base temperature characteristic diagram of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron main body 2 Base 3 Heater 10 Indicator lamp 19 Mounting table 49 Latch means 63 Temperature setting means 66 Temperature detection means 69 Timer 70 Buzzer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Arinaka 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Daisuke Ikemoto 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tori (56) References JP-A-61-154600 (JP, A) JP-A-61-257700 (JP, A) European Patent Application Publication 225298 (EP, A)

Claims (1)

(57) [Claims] And the iron main body having a base which is more heated to 1. A heating means, the mounting table for energizing the iron main body to put freely and then placing the iron body standing time, the cordless iron and a notifying means, wherein The notifying means has a buzzer and an indicator provided on at least the iron body, and turns on the indicator until the base drops to a temperature unsuitable for ironing after detaching the iron body from the mounting table , When the base reaches the temperature
Switch off the display and turn off the buzzer at a predetermined time.
The buzzer sounds after the predetermined time has passed.
And stop the ironing book while the buzzer sounds.
When the body is placed on the mounting table, the buzzer stops sounding.
Cordless iron being characterized in that a configuration in which locked.