JP2554765Y2 - Discharge switch device for electric pot - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge switch device for an electric pot.

[0002]

2. Description of the Related Art Conventionally, when a push button is pressed, a discharge switch is turned on or off, and a discharge pump driving motor connected to the switch is driven to discharge a liquid content for a time corresponding to the pressing time of the push button. A known electric pot is known. However, in this case, since the discharge amount of the content liquid is proportional to the pressing time of the push button, it is troublesome that the push button must be kept pressed to discharge a large amount of the content liquid.

On the other hand, in addition to the above-described electric pot, a plurality of push buttons and a plurality of discharge switches are provided, and when any one of the push buttons is pressed, a paired switch is turned on, and a different switch is turned on. There has also been proposed an electric pot capable of discharging a quantity of the content liquid. In this case, even when a large amount of the liquid is discharged, it is not necessary to keep pressing the push button, and the operation is simple.

[0004]

However, in the case of such an electric pot, when one push button is pressed, only one switch is switched, and the same number of switches as the number of commands is required. Therefore, when it is desired to switch between various types of discharge amounts, a large number of switches and push buttons are required, and there is a disadvantage that the switch device becomes large and disadvantageous in cost. Accordingly, an object of the present invention is to provide a small and inexpensive electric pot discharge switch device which can switch the discharge amount larger than the number of switches with a small number of switches.

[0005]

In order to achieve the above object, the present invention is provided with a plurality of discharge switches, wherein the discharge switches are selectively switched by pressing a push button, and the discharge of the content liquid discharge pump. In an electric pot with a variable amount, the push button is disposed at a position straddling an adjacent discharge switch, and a single discharge switch or a plurality of discharge switches can be selectively switched according to the pressed position of the push button. It was done.

[0006]

Operation For example, assume that two discharge switches are operated with one push button. When the two ejection switches are called first and second switches, respectively, the push buttons are arranged across the first and second switches. Pressing one end of the push button switches only the first switch, pressing the other end of the push button switches only the second switch, and pressing the center of the push button switches the first and second switches. Switch at the same time. As described above, three types of discharge amount can be switched by one push button and two switches. In the case where a plurality of push buttons and discharge switches are arranged in a line, if the number of switches is n, n-1 push buttons are sufficient. Then, the number of switching of the discharge amount is n + (n-1), which is about twice the number of switches.

[0007]

FIG. 1 is a circuit diagram of an example of an electric pot according to the present invention. In the figure, 1 is a microcomputer,
2 is an AC power supply, 3 is a relay contact, 4 is a relay drive circuit, 5 is a water heater, 6 is a warming heater, 7 is an AC current control triac, 8 is a triac drive circuit, 9
Denotes a constant voltage circuit, 10 denotes a pump for discharging the content liquid, 11 denotes an electric motor for driving the pump, and 12 denotes a motor drive circuit.
Since these structures are the same as those of a known electric pot, description thereof will be omitted.

The input port of the microcomputer 1 is connected to _seven normally open switches SW _{1 to} SW 7 via input protection resistors R _{1 to} R ₇ , respectively, and these switches are further connected via pull down resistors R _{8 to} R _14. Grounded.
The other end of the switch constant voltage V _D is applied.

Of the above switches, SW ₁ is a good night switch, SW ₂ is a reboil switch, SW _{3 to} SW ₆ are discharge switches, and SW ₇ is a discharge lock switch. Is input to the microcomputer 1. Good night switch SW ₁ is O
If N, the microcomputer 1 starts counting and at the same time turns the water heater 5 or the heat retaining heater 6 on.
When FF is performed and the time is up after a certain time, re-boiling is performed. Discharge lock switch SW _7, when operated unexpectedly discharge switch SW ₃ to SW _6, a safety switch to prevent the content liquid is ejected by mistake, discharge after ON the discharge lock switch SW ₇ Switches SW _{3 to} S
Operating the W _6, drives the motor 11 at a speed microcomputer 1 according to the respective switches SW ₃ to SW _6, and discharges the content liquid at a predetermined flow rate.

The microcomputer 1 has a resistor R ₁₅
Through to R ₂₄ is connected to one end of the light emitting diodes LED ₁ ~LED _10, the other end of the LED ₁ ~LED ₁₀ constant voltage V
_D is applied. LED ₁ is lit when warm, LE
D ₂ is or night time when re-boiling switch SW ₂ is turned ON is turned on when the time is up. LED ₃ is lit when ON the night switch SW _1, night time is turned off when the time is up.

The LEDs _{4 to 10} are for displaying the discharge flow rate, and are set so that the discharge flow rate gradually increases from the LED ₄ to the LED ₁₀ . For example, LED ₄ is 5cc / sec
LED ₅ is 15cc / sec, L
ED ₆ is 25cc / sec, LED ₇ is 50cc / sec, LED ₈
Is 75cc / sec, LED ₉ is 100cc / sec, LED ₁₀ is 1
Each corresponds to 50 cc / sec. LED ₄ lights up when the discharge switch SW ₃ is turned on, LED ₆ lights up when the discharge switch SW ₄ is turned on, LED ₈ lights up when the discharge switch SW ₅ is turned on, and LED ₁₀ turns on when the discharge switch SW ₆ is turned on. Lights when turned on. LED ₅
Is lit when the discharge switches SW ₃ and SW ₄ are turned on at the same time, LED ₇ is lit when the discharge switches SW ₄ and SW ₅ are turned on at the same time, and LED ₉ is lit when the discharge switches SW ₅ and SW ₆ are turned on at the same time. I do.

Table 1 shows discharge switches SW _{3 to} SW ₆ and L
It is limited to showing the correspondence between the ED ₄ ~LED _10, ~
The seven types of switches are switched, and the discharge flow rate also changes in accordance with the seven types. In Table 1, H indicates a high level (ON) and L indicates a low level (OFF).

FIGS. 2 and 3 show a discharge switch device for the electric pot, in which three push buttons 20 to 22 for operating discharge switches SW _{3 to} SW ₆ are arranged. The push buttons 20 to 22 are vertically movably held in the opening 23 a of the case 23. One end of the first push button 20 is formed thick, and the discharge switch SW
Protrusions 20a for pressing ₃ are provided. First
A thin portion 20b is formed on the upper surface of the other end of the push button 20, and a projection 20c is also provided on the lower surface of the thin portion 20b.

A thin portion 21a disposed below the thin portion 20b is provided at one end of the second push button 21, and the projection 20c contacts the upper surface of the thin portion 21a and the discharge switch SW on the lower surface. A projection 21b for pressing the button ₄ is formed. A thin portion 21c is also provided on the upper surface of the other end of the second push button 21, and a projection 2 is formed on the lower surface of the thin portion 21c.
1d is formed.

A thin portion 22a disposed below the thin portion 21c is provided at one end of the third push button 22, and the projection 21d contacts the upper surface of the thin portion 22a, and the discharge switch SW on the lower surface. Protrusions 22b for pressing ₅ are formed. Third other end of the push button 22 is formed in a thick, protrusion 22c for pressing the discharge switch SW ₆ to the lower surface of the thick portion is formed.

The upper surface of the case 23 including the upper surfaces of the push buttons 20 to 22 is covered with a flexible sheet 24 to prevent water and dust from entering the inside of the case 23.
Discharge switch SW ₃ to SW ₆ is mounted on the printed circuit board 25, LED ₄ ~LED ₁₀ is also mounted in the same manner as the printed circuit board 25. In FIG. 2, reference numerals 26 to 32 are display window holes provided in the case 23.

Next, the operation of the switch device will be described with reference to FIG. For example, pressing the end of the thick portion of the first push button 20, pushbutton 20, as in FIG. 3 (b) is inclined, ON causes only discharge switch SW _3. Therefore, the LED ₄ is turned on, and the content liquid is discharged at a discharge flow rate of 5 cc / sec. Further, when pressing the central portion of the first push button 20, pushbutton 20 is depressed remains horizontal as in (c) of FIG. 3, the projection 20a is to turn ON the discharge switch SW _3, the protrusion 20c is a second press down on the thin-walled portion 21a of the push button 21, ON causes the discharge switch SW _4. Therefore, the LED ₅ is turned on and the content liquid is discharged at a discharge flow rate of 15 cc / sec. Further, the first push button 20
3D, the first push button 20 and the second push button 21 are tilted with the pressed position as a fulcrum as shown in FIG. 3D, and the projection 20c of the first push button 20 is 2 Press down the thin portion 21a of the push button 21 and press the discharge switch S
W ₄ only make ON. Therefore, LED ₆ lights up,
The content liquid is discharged at a discharge flow rate of 25 cc / sec. Thereafter, by sequentially shifting the pressed position by half a pitch toward the third push button 22 side, the switches SW _{3 to} S
W ₆ can be switched in seven ways, and the discharge flow rate can also be switched in seven ways.

FIG. 4 shows a second embodiment of the switch device.
In the first embodiment, one end of each of the push buttons 20 to 22 is configured to overlap the other end of the adjacent push button. However, in this embodiment, the adjacent push buttons 30 to 32 do not overlap, and Push buttons 30 to 32 have four switches 33 to 36
Are arranged so as to straddle two of them. Also in this case, as in the case of FIG. 3, seven types of switches can be switched.

FIG. 5 shows a third embodiment of the switch device.
In this embodiment, four switches 40 to 43 can be pressed by one push button 44, and a total of nine commands are issued. In this case, the push button 44
When one of the four corners 44a to 44d is pressed, one of the switches is switched. When the middle part of the four sides is pressed, two adjacent switches are switched. When the center of the push button 44 is further pressed, four switches are switched. The switches 40 to 43 are all switched.

The present invention is not limited to the above embodiment, and can be variously modified without departing from the gist of the present invention. In the above embodiment, the electric pot in which the discharge flow rate of the pump is changed by switching the discharge switch has been described.However, the present invention is not limited to this, and the discharge flow rate per unit time of the pump is constant, The discharge time may be variable.

[0021]

As is apparent from the above description, according to the present invention, a push button is arranged at a position straddling an adjacent discharge switch, and a single switch or a plurality of switches is arranged depending on the pressed position of the push button. Since the switch can be switched selectively,
A command larger than the number of switches can be given. Therefore, even when switching between various types of discharge amounts, a small number of discharge switches and push buttons are sufficient, and a small and inexpensive discharge switch device can be realized.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an example of an electric pot including a discharge switch device according to the present invention.

FIG. 2 is a perspective view of the discharge switch device according to the present invention.

FIG. 3 is a cross-sectional view illustrating an operation of the discharge switch device of FIG.

FIG. 4 is a sectional view of a second embodiment of the discharge switch device according to the present invention;

FIG. 5 is a perspective view of a discharge switch device according to a third embodiment of the present invention.

[Explanation of symbols]

1 the microcomputer 10 pump 11 motor 20-22 pushbutton SW ₃ to SW ₆ discharge switch

Claims (1)

(57) [Scope of request for utility model registration] 1. An electric pot having a plurality of discharge switches, wherein said discharge switches are selectively switched by pressing a push button, and a discharge amount of a content liquid discharge pump is variable, wherein said push buttons are adjacent to each other. A discharge switch device for an electric pot, wherein the discharge switch device is disposed at a position straddling the discharge switch, and a single discharge switch or a plurality of discharge switches can be selectively switched by a pressing position of a push button.