JPS61159912A - Rice cooker with digital timer - 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 Technical Field The present invention relates to a rice cooker, and more specifically, to a rice cooker having a digital timer that can set the time until the start of rice cooking operation.

<Prior art> Conventionally, even if there is no operator near the rice cooker, such as early in the morning or when going out, rice cookers can be opened when the user wakes up, or the rice will be cooked at the time of returning home. In order to achieve this, rice cookers equipped with a timer that can set the rice cooking start time are provided.

A dial type timer is generally used as the timer, and a predetermined time within a settable time range such as 12 hours or 15 hours can be set depending on the rotation angle.

However, with the above timer, the rotation angle per hour is small, so it is almost impossible to set the time accurately in 10 minute increments, for example, and it is necessary to set the time in 30 minute increments at most. It has the disadvantage that it can only be 8.

In order to solve this inconvenience, it may be possible to simply replace the dial-type timer with a digital timer, but a digital timer is usually a 24-hour timer, and moreover, it immediately reaches 0 hours after 24 hours. Therefore, if you accidentally extend the operation duration too long, the
There is an inconvenience that the time has expired and the time must be set again, and as a whole there is an inconvenience that it takes a long time to set the time.

<Purpose> This invention was made in view of the above problems,
To provide a rice cooker with a digital timer that makes it easy to see the set time and prevents the set time from exceeding an upper limit value.

Structure> To achieve the above object, the rice cooker with a digital timer of the present invention has a digital timer, an operating means, and a regulating means, and the digital timer has a digital timer that is controlled by a liquid crystal display or the like. The time is displayed numerically, and the operating means increases or decreases the time set by the digital timer using operation keys, seesaw switches, etc., and the regulating means increases or decreases the time set by the digital timer. It regulates the upper limit value.

Therefore, by operating the operating means, the set time by the digital timer can be increased or decreased, and after the set time reaches the upper limit, the regulating means prevents the set time from increasing. be able to.

However, it is preferable to have a notification means for notifying that the time set by the digital timer has reached the upper limit value, and can notify that the operation of the operating means should be stopped and that the upper limit value has been reached. In this case, the notification means may be one that displays the set time blinking, but may also be one that displays an audio signal or the like.

<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

In Fig. 4 showing a partially cutaway side view of the rice cooker, (1)
is the rice cooker main body, (2) is the inner pot, (3) is the inner pot storage container that accommodates the inner pot (2), (4) is the rice cooker, and (5) is the inner pot. ('2' is a heat-sensitive element in contact with the lower surface of I, (6) is a 111 control unit mainly composed of a microcomputer, and ('2' is a rice-cooking switch. (The quick-cooking switch (8) is provided close to above the power, and the keep-warm switch (9) is provided above the quick-cooking switch (8).
A timer set switch and a timer time display (11) are provided above the heat retention switch (9), and a heat retention status display (12), a rice cooking status display (13), and a timer are provided at the top. An operating status indicator (14) is provided. In addition, there is a timer set switch (T) on the seesaw set, and a digital timer time display (1).
The installation of 1) is as shown in Fig. 6, and a four-stage band-shaped part (16) is formed at a predetermined position of the approximately rectangular box-shaped casing (15) that houses the control unit (6). At the same time, through holes (16a) are formed at both ends of the recessed step (16).
, and an engaging portion (1) is formed on the lower surface of the outer end of each through hole (16a).
6b). A window hole (16c) for exposing the timer time indicator (11) to the outside and a lever (10a) for the timer set switch (g) are placed in the predetermined position of the recessed step (16). window hole (16d)
, the support that supports the shaft (iob) of the lever (10a) is part (
16e). The display plate (11) is a plate material that forms a window hole in the same shape as the window holes (16C) and (16d) and is bent along the outer surface of the four-step portion (16), and is marked with an appropriate display symbol. etc. are applied. Further, the protection plate (18) is a transparent plate formed along the outer surface of the display plate (11) and flush with the outer surface of the casing (15), and has the above-mentioned through holes at both ends. An engaging pawl (18a) is formed that penetrates through the engaging portion (16a) and engages with the engaging portion (16b). When the control unit (6) is housed, the engagement claw (18a) is regulated from deformation by the control unit (6) to ensure the engagement, and the protection plate (18) is protected from the outside by the control unit (6). Extraction can be reliably closed. However, as shown in FIG. 7, an engaging portion (16
b), which pass through the through hole (16a) and engage with the engaging portion (16b), can be attached to both ends of the protective plate (18), and can be attached from the outside. Since it is not possible to apply a force in the direction of disengaging the engagement, it is possible to reliably prevent the protection plate (18) from occurring as described later.

Fig. 1 is a block diagram of a rice cooker with a digital timer, in which an output signal from a 1-chip microcomputer (61) is applied to a heater control section (62), and a timer time display (11
) to each liquid crystal segment constituting the LED
Heat retention status indicator (12) consisting of etc., rice cooking status display! (13) and the timer operating status indicator (14). In addition, the temperature sensing element (9 output ゛ signal, rice cooking switch (force signal, quick cooking switch (8) signal, keep warm switch (9) signal, timer set switch □ signal (increase switch signal and decrease switch signal) The voltage is applied to the above-mentioned 1-chip microcomputer (61).Furthermore, a rice cooking heater (4) and a side heating element (64) are connected in series between both terminals of the commercial AC power supply (63).
, both terminals of the rice cooker heater (4) and the side heating element (64
) is connected to the heater control section (62), and the other end of the lid heater (65), one end of which is connected to the rice cooking heater (4) side terminal of the commercial AC power source (63), is connected to the heater control section (62). It is connected to the control section (62).

With the above configuration, normal rice cooking operation,
Alternatively, it is possible to perform a quick-cooking operation that omits the water absorption process, and by operating the heat retention switch (9),
A heat retention process can be performed.

Next, the operation of the main parts of the rice cooker with digital timer configured as above will be explained using the programs shown in FIGS. 2 and 3.

In step ■, the timer set switch (a)) is set to O.
It is determined whether it is N or not, and if it is ON, it is determined in step (2) whether or not the first predetermined time T1 has elapsed. That is, it is determined whether or not the timer hit switch V has been ON for a predetermined time T1 or more. Then, if the predetermined time T1 has not elapsed, the determination and processing □ from step □ are performed again. On the other hand, the timer set switch (to) for a predetermined time T1 or more
If it is ON, it is determined in step (2) which side of the timer set switch is ON, the increase switch side or the decrease switch side. If the increase switch side is ON, the timer display (
11) The time display is increased by 10 minutes, and after holding it until the second predetermined time T2 has elapsed in step ■, it is determined in step ■ whether the set time has reached the upper limit value T3, and on the other hand, it is decreased. If the switch side is ON, the display time on the timer time display (11) is decreased by 10 minutes in step (2), and after the second predetermined time T2 has elapsed in step (2), the set time is set to the lower limit in step (3). It is determined whether the number reaches 110 or not. Next, in step O■, the upper limit f11T3 and the lower limit l[
If it is determined that the timer set switch V has not reached 0, it is determined again in step 1 whether or not the timer set switch V is ON.
Repeat the process. If it is determined that the lower limit value 0 has been reached in the above step (■), the timer switch (
(not shown) is activated to start the rice cooking operation in step (2).

On the other hand, if it is determined in step ■ that the set time has reached the upper limit T3, the display of set time (upper limit) ■, 3 is made to blink in step @, and the timer set switch □□ is switched again in step O. Increase switch side of □ is ON
If it is ON, the process of step 0 is repeated. On the other hand, if it is OFF, it is determined in step (2) whether a reset switch (not shown) is ON. Further, also when it is determined in step (2) that the timer set switch υ is OFF, the determination in step (2) is performed.

If it is determined that the reset switch is ON in the above step ■, the rice cooking operation is started in step ■; however, if it is determined that the reset switch is OFF, the rice cooking operation is switched in steps [phase] and [phase]. (71 is ON
and whether or not the timer set switch color is ON. If it is determined that both are OFF, the following determinations are made in step ①, and if it is determined that the rice cooking switch (7) is ON, step 0 is performed.
When the timer set switch (G) is determined to be ON, the subroutine for performing the timekeeping operation is performed in step [phase], and either the increase switch side or the decrease switch side of the timer set switch (G) is activated. side is O
Determine whether it is N. Then, the increase switch side is turned on
If so, the time displayed by the timer time display (11) is increased by 10 minutes in step 2. On the other hand, if the decrease switch side is ON, the time displayed by the timer time display (11) is decreased by 10 minutes in step 2. . Thereafter, in step (2), the notifying means (not shown) is driven to issue a voice notification, and the determination and processing in step (2) and subsequent steps are performed again. However, the above times TI, T2. T3
For example, the time period may be set to 1 second, 0.1 second, or 15.00 hours.

In summary, in order to set the timer, it is necessary to operate the timer set switch color for a predetermined time T1 or more, and it is possible to prevent the timer from being set due to erroneous operation.
Moreover, when setting a timer for a long time, you only need to continue operating the timer set switch (G).
It's convenient. Even if you continue to operate the timer set switch (G), once the set time reaches the upper limit T3, a visual notification will be provided by flashing the display li, and the set time will be maintained as is. It is convenient.

FIG. 3 is a flowchart showing a subroutine for performing a timekeeping operation, in which the timer time display (1
Among the displays in 1), blink the colon at the bottom right and check whether the timer switch, rice cooking switch (7) or fast cooking switch (8), and keep warm switch (9) are ON in step ■■■. Determine whether If the timer switch is OFF and the rice cooking switch (7) or quick cooking switch (8) is ON, the rice cooking operation is performed in step (2), and the timer switch is turned OFF.
And when the heat retention switch (9) is ON,
In step (2), the hold & i operation is performed. On the other hand, if the timer switch is ON, the display on the timer time display (11) is made to blink in step ■, the timer is held until the timer setting is completed in step ■, and the rice cooking switch (7) or fast cooking is turned on in step ■. Switch (8
) until it turns ON, and at step [phase], the 9-hour display part of the timer time display (11) lights up continuously, and the colon at the bottom right flashes, and at step ■, the count starts, and at step 1 in @
The display time on the timer time indicator (11) is decreased by 1 minute in step (2) until one minute has elapsed, and it is determined whether the display time has reached O in step [phase]. If the display time has not reached O, the determination and processing from step IO onwards are repeated, and if the display time has reached O, the rice cooking operation in step (2) is performed.

In summary, while the timekeeping operation is being performed, the lower right colon flashes periodically, which is convenient because it can reliably notify that the timekeeping operation is being performed.

Effects> As described above, the present invention has a digital timer that displays the set time as a digital value, and the set time can be increased or decreased by the operating means, and the set time can be prevented from exceeding the upper limit by the regulating means. This has the unique effect that the upper limit value can be reliably set as the set time simply by continuing to operate the operating means.

Further, it is more preferable to make the set time blink when the set time reaches the upper limit value, since this can be confirmed visually.

[Brief explanation of the drawings] Figure 1 is a block diagram of a rice cooker with a digital timer, Figure 2 is a block diagram of a rice cooker with a digital timer;
3 and 3 are 70-charts, FIG. 4 is a partially cutaway side view of the rice cooker, FIG. 5 is an enlarged front view showing the switch mounting part, FIG. FIG. 7 is a vertical cross-sectional view of main parts showing another embodiment. (2)... Inner pot, (4) Rice cooking heater, (5)... Heat sensitive element, υ... Timer set switch, (11)...
・Timer time display patent applicant Tiger Thermos Co., Ltd. Engraving of drawings (Procedures in Figure 1 and Figure 4 with no change in content Amendment S (Method) May 7, 1985 Commissioner of the Patent Office Manabu Shiga 2, Name of the invention: Rice cooker with digital timer 3, Relationship to the case of the person making the amendment Patent applicant Location: 2-1-9 Gamo, Higashi-ku, Osaka City Name:
(370) Tiger Liaobin Co., Ltd. Representative Yoshito Kikuchi 4, Agent 5, Date of amendment order

Claims (1)

[Claims] 1. Setting the time until the rice cooking starts In a rice cooker with a digital timer, Increase/decrease set time using digital timer It has an operation means to make the Upper limit of setting time by digital timer Having regulatory means to regulate the value A rice cooker with a digital timer. 2. The time set by the digital timer is too long. Provide a notification means to notify when the limit value has been reached. Claim 1 above: A rice cooker with a digital timer. 3. The notification means flashes and displays the set time. Claim 2 above Rice cooker with digital timer as described.