JP2000316723A - Safety device of electric pot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an alarm from being emitted and a cap from being inadvertently opened when a lid is inadvertently opened by constituting an electric pot in such a manner that the alarm is emitted when a lid opening/closing means detects the opened state of the lid in the case an alarm manipulation means is held set at on. SOLUTION: When a power source of the electric pot is turned on, the opening/closing state of the lid is detected according to whether or not the contacts of a reed switch are open (S1). When the lid is closed, the ordinary control of the electric pot is executed (S2). If the lid is held open, a buzzer of a display manipulation section is sounded and the alarm is emitted (S3). When the lid is closed, ordinary control of the electric pot is not executed (S2). The opening/closing state of the lid is occasionally detected even after the ordinary control of the electric pot is started (S4). When the lid is opened, the buzzer of the display manipulation section is sounded and the alarm is emitted (S5) and the ordinary control of the electric pot is stopped until the lid is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an electric pot that prevents the lid of the electric pot from being opened carelessly.

[0002]

2. Description of the Related Art As shown in FIG. 10, an electric pot is formed by pouring water into an inner container 2 made of stainless steel or the like in a container body 28 composed of a pot body 1 and a lid 5 and springing it with a heater 3 to keep it warm. , So that hot water can be supplied at any time.

[0003] In facilities such as hospitals, companies, schools, and the like, it is often the case that hot drinks and ready-to-eat foods can be prepared at any time by making such an electric pot available to everyone.

[0004]

However, in the conventional electric pot, as shown in FIG. 11, when the lid opening / closing lever 4 is pushed and lifted, the tip of the lid opening / closing bar 15 locked on the pot body 1 is pulled back. The lid 5 can be easily opened. For this reason, there has been a problem that if an unspecified person can use the electric pot, there is a risk that someone secretly mixes foreign matter into the hot water of the inner container 2. Also, when the electric pot is used at home or the like, the lid 5 can be easily opened by a child or the like. If the electric pot is knocked down with the lid 5 opened, the hot water in the inner container 2 is spilled. There was also a problem that it was dangerous to put it out.

The present invention has been made in view of the above circumstances, and a safety device for an electric pot that prevents an alarm from being issued when the lid is opened carelessly and that the lid is not opened carelessly is provided. It is intended to provide.

[0006]

According to the first aspect of the present invention, there is provided a container, an inner container provided in the container, a heater for heating a liquid in the inner container, and a lid for opening the inner container. In an electric pot, a lid opening / closing detecting means for detecting an opening / closing state of a lid, an alarm operating means for setting ON / OFF of an alarm, and a lid opening / closing detecting means for setting an ON / OFF of the alarm operating means And an alarming means for issuing an alarm when an open state is detected.

According to the first aspect of the present invention, since an alarm is issued when the lid is opened, it is possible to prevent a person from inadvertently opening the lid of the electric pot and mixing foreign matter.
In addition, it is possible to notify by a warning that the lid has been forgotten to be closed.

According to a second aspect of the present invention, there is provided an electric pot having a container, an inner container provided in the container, a heater for heating a liquid in the inner container, and a lid for opening the inner container. Lid lock operation means for setting the mode ON / OFF;
When the lid lock mode is ON, lid lock means for mechanically locking the lid so as not to open the lid is provided.

According to the second aspect of the present invention, since the lid can be locked so as not to be opened carelessly, there is a danger that another person may open the lid of the electric pot and mix foreign substances, or a child may accidentally open the lid. Can be prevented.

The invention according to claim 3 is characterized in that the lid opening / closing detecting means detects the opening / closing of the lid based on whether or not the lid is pressing the actuator of the microswitch provided on the pot body side. And

According to the third aspect of the present invention, the open / closed state of the lid can be easily detected using the microswitch.

According to a fourth aspect of the present invention, the lid opening / closing detecting means detects opening / closing of the lid based on whether a magnet attached to the lid is close to a reed switch provided on the pot body side. It is characterized by.

According to the fourth aspect of the present invention, the open / closed state of the lid can be easily detected using the reed switch.
In addition, since the reed switch has no contact, there is almost no mechanical failure.

The invention according to claim 5 is characterized in that the alarm means issues an alarm only when the lid opening / closing detecting means detects that the lid has been opened more than a predetermined number of times.

According to the fifth aspect of the present invention, only when the lid is repeatedly opened, it is possible to warn that there is a danger of foreign matter mixing or the like.

The invention of claim 6 is characterized in that the alarm means issues an alarm only when the lid opening / closing detecting means detects that the lid is open for a predetermined time or more.

According to the sixth aspect of the present invention, only when the cover is opened for a predetermined time or more, it is possible to warn that there is a risk of foreign matter being mixed in.

The invention according to claim 7 is characterized in that the alarm means issues an alarm and invalidates a predetermined operation.

According to the seventh aspect of the present invention, when the lid is opened, by invalidating a predetermined operation such as hot water supply, it is possible to more reliably prevent the danger of entry of foreign matter and the like.

The invention of claim 8 is characterized in that the alarm means issues an alarm by sound.

According to the eighth aspect of the present invention, the fact that the lid is opened is notified by a buzzer sound or the like, so that the surrounding people can immediately notice the abnormality.

The ninth aspect of the present invention is characterized in that the alarm means issues an alarm by light.

According to the ninth aspect of the present invention, the fact that the lid is opened is indicated by blinking of the LED lamp or the like, so that a person who intends to use the electric pot can immediately notice the abnormality.

According to a tenth aspect of the present invention, there is provided the lid opening / closing detecting means, the alarm operating means and the alarm means of the first aspect, and the lid locking operating means and the lid locking means of the second aspect, wherein the lid locking operating means is a lid. When the lock mode is set to ON, the alarm operation means is also set to ON.

According to the tenth aspect of the present invention, the lid can be prevented from being easily opened by the lock, and an alarm can be issued even if the lid is opened. Prevention can be surely prevented.

The invention according to claim 11 is characterized in that the lid opening / closing detecting means detects the locked state of the lid locking means.

According to the eleventh aspect of the present invention, it is detected that the lid is unlocked and the lid can be opened instead of actually opening the lid.

According to a twelfth aspect of the present invention, the lid lock mode is automatically set to ON when the lid lock means mechanically locks the lid so as not to open the lid.

According to the twelfth aspect of the present invention, when the operation of locking the lid is performed, the lid lock mode is automatically turned on, so that the labor of the operation can be reduced.

The invention according to claim 13 is characterized in that the lid locking means locks and / or unlocks the lid by operating an electromagnetic solenoid.

According to the thirteenth aspect of the present invention, the lid can be locked or unlocked by electrical control, so that a lever or the like for locking the lid is not required.

The invention according to claim 14 is characterized in that the lid lock operation means sets the lid lock mode to ON by a predetermined operation.

According to the fourteenth aspect, the lid lock mode can be set by, for example, a predetermined key operation. If the predetermined key operation or the like is performed by a key combination or the like that cannot be known without a person who has viewed the manual, it is possible to prevent anyone from setting the lid lock mode. When anyone can release the lid lock mode, for example, it is possible to prevent a person who has a foreign substance from resetting the lid lock mode and concealing the crime.

The invention according to claim 15 is characterized in that the lid lock operation means sets the lid lock mode to ON by a predetermined authentication operation.

According to the fifteenth aspect of the present invention, since the setting of the lid lock mode requires an authentication operation such as inputting a password, the release of the lid lock mode can be performed by anyone. However, for example, it is possible to prevent a person who has a foreign substance from resetting the lid lock mode and concealing the crime.

The invention according to a sixteenth aspect is characterized in that a lid lock non-setting alarm means for issuing an alarm prompting the ON setting of the lid lock mode at the start of energization is provided.

According to the sixteenth aspect of the present invention, at the start of energization after water supply or the like, the buzzer sound or the blinking of the LED lamp can prompt the user to set the lid lock mode. Can be prevented.

The invention according to claim 17 is characterized in that the lid lock mode is automatically set to ON at the start of energization.

According to the seventeenth aspect, since the lid lock mode is automatically set, it is possible to prevent forgetting to set the lid lock mode.

The invention according to claim 18 is characterized in that the lid lock mode is not set to ON unless the water temperature in the pot is lower than a predetermined temperature.

According to the eighteenth aspect of the invention, the lid lock mode cannot be set unless the water temperature in the pot is reduced to some extent due to water supply or the like, so that anyone can release the lid lock mode. However, for example, it is possible to prevent a person who has a foreign substance from resetting the lid lock mode and concealing the crime.

The invention of claim 19 is characterized in that the lid lock operating means sets the lid lock mode to OFF by a predetermined operation.

According to the nineteenth aspect, the lid lock mode can be released by, for example, a predetermined key operation. If the predetermined key operation or the like is performed by a combination of keys or the like that cannot be known without a person who has viewed the manual, it is possible to prevent anyone from being able to release the lid lock mode. It is possible to prevent an alarm from being issued even when the lock mode is released and the lid is opened, and to prevent the lid from being unlocked without permission.

According to a twentieth aspect of the present invention, the lid lock operation means sets the lid lock mode to OFF by a predetermined authentication operation.

According to the twentieth aspect of the present invention, the release of the lid lock mode requires an authentication operation such as the input of a personal identification number, so that anyone can release the lid lock mode. It is possible to prevent the alarm from being issued even when the lid lock mode is released and the lid is opened, or to prevent the lid from being unlocked without permission.

The invention according to claim 21 is characterized in that the lid lock mode is automatically set to OFF when the power supply is cut off.

According to the twenty-first aspect of the present invention, the lid lock mode is released when the power is cut off, so that it is possible to avoid the inconvenience that an alarm is issued at the time of water supply and the lid is not opened. However, this allows anyone to release the lid lock mode, so it is necessary to make it difficult to reset the lid lock mode.

The invention according to claim 22 is characterized in that a lid lock mode display means for displaying ON / OFF of the lid lock mode is provided.

According to the twenty-second aspect, since the display is performed when the lid lock mode is set, it is possible to prevent the user from forgetting to set the lid lock mode, and to easily release the lid lock mode carelessly. You will be able to know.

[0050]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show a first embodiment of the present invention. FIG. 1 is a flowchart showing the operation of an electric pot safety device, and FIG. FIG. 3 is a block diagram showing the configuration of the control unit of the electric pot safety device. FIG. 4 is a plan view of the display operation unit of the electric pot. FIG. FIG. 6 is a flowchart showing the operation in the case of receiving the setting of the lid lock mode according to the water temperature. Components having the same functions as those of the conventional example shown in FIGS. 10 to 11 are denoted by the same reference numerals.

In the above embodiment, an electric pot similar to the conventional example shown in FIGS. 10 to 11 will be described. However,
As shown in FIG. 2, the electric pot of the above embodiment has a lid opening / closing bar 15 interlocked with the lid opening / closing lever 4 as a safety device.
When the lid 6 is closed, the magnet 6 is embedded in the tip of the pot body 1 and the tip of the lid opening / closing bar 15 is close to the pot body 1.
The reed switch 7 is arranged at the upper position of. The lid opening / closing bar 15 is disposed so as to be slidable forward and backward on the slide portion 17, and is urged forward by a spring 18. The magnet 6 is fixed to the tip of the lid opening / closing bar 15 by fitting, press fitting, or integral molding. Further, the lid opening / closing lever 4 is attached so as to be swingable about a shaft 19, and pushes the pushing / moving part 20 to raise the pulling lever part 21. Since the opening / closing bar 15 can be pushed back, the lid 5 is opened. The reed switch 7 is an element that is opened and closed by a magnetic force at a contact sealed inside. The reed switch 7 is fitted and fixed to the mounting portion in front of the lid opening / closing bar 15 on the pot body 1 side by the elasticity of the pipe cover 27. Therefore, when the lid 5 is closed and the lid opening / closing lever 4 is returned, the lid opening / closing bar 15
Is pushed out, the contact of the reed switch 7 is closed because the tip magnet 6 approaches, and when the lid 5 is opened, the magnet 6
, The contact of the reed switch 7 is opened. The display operation unit 11 is arranged on the pot body 1 in front of the lid opening / closing bar 15. In addition, hot water
Hot water is supplied from the spout 24 through the overturn prevention valve 23.

The reed switch 7 is, as shown in FIG. 3, a microcomputer 8 arranged in the pot body 1.
To detect the open / closed state of the contact. The microcomputer 8 is a control circuit for controlling the electric pot. For example, the microcomputer 8 receives temperature information from a water temperature sensor 9 for detecting the water temperature of the inner container 2, and receives the temperature information of the inner container 2 via a heater circuit 10. Heater 3 for heating
By controlling the temperature, the water is boiled or the temperature of the hot water is kept constant. The display operation unit 11 includes:
As shown in FIG. 4, a number of keys 25 and LED lamps 26 are provided.
And a buzzer (not shown) is also built in. Then, the microcomputer 8 inputs the operation of the key 25 on the display / operation unit 11 and also displays
The lighting of the lamp 26 is controlled, and a buzzer can be sounded. For example, when the “hot water supply” key 25 of the display operation unit 11 is pressed, the hot water is supplied by operating the hot water supply pump 16 via the hot water supply circuit 12.
In addition, the display operation unit 11 may be provided with a liquid crystal display device in order to enable character display and the like.

The control operation for the safety device in the microcomputer 8 will be described with reference to the flowchart of FIG. The electric pot is supplied with water when the lid 5 is opened and water is poured into the inner container 2 in a state where the power cord is disconnected and the power is turned off. Then, when the power cord is connected to the electric pot and the power is turned on, in the first step (hereinafter referred to as “S”), the open / closed state of the lid 5 is detected based on whether or not the contact of the reed switch 7 is closed ( S1). Here, when the lid 5 is closed, normal control of the electric pot is performed (S2).
However, when the lid 5 is kept open, if hot water is sprinkled, hot water is spilled when the electric kettle falls over, which is dangerous. Therefore, in this case, the display operation unit 11
Is sounded (S3), and when the lid 5 is closed, normal control of the electric pot is performed (S2).

Even after the normal control of the electric pot is started, the open / closed state of the lid 5 is detected at any time (S4). Then, when the lid 5 is opened, the buzzer of the display operation unit 11 sounds and an alarm is issued (S5), and normal control such as water heating and hot water supply of the electric pot is stopped until the lid 5 is closed. . Therefore, even if someone secretly opens the lid 5 while the electric kettle is boiling or keeping the temperature warm, the buzzer sounds to inform the user of the abnormality, thereby preventing the risk of foreign matter being mixed into the inner container 2. Will be able to do it. In FIG. 1, when the lid 5 is closed, the buzzer also stops sounding. However, if the lid 5 is first opened and then the lid 5 is opened again, the buzzer will continue until the release operation is performed. You can make it keep ringing. Further, even when the lid 5 is closed and the buzzer stops sounding, the abnormality can be notified by means such as blinking the LED lamp of the display operation unit 11 subsequently. Moreover,
Here, even if the lid 5 is once closed, the normal control of the electric pot may be kept stopped in order to prevent a person who has not noticed the alarm from subsequently supplying hot water or the like. Furthermore, when operations such as hot water supply are performed without knowing this way,
The reason why the hot water supply is stopped may be described by displaying a message on the liquid crystal display device of the display operation unit 11 or the like.

As described above, according to the electric pot safety device of the above embodiment, the buzzer sounds when the lid 5 is opened, so that another person may inadvertently open the electric pot lid 5 and mix foreign matter. Can be prevented. In addition, lid 5
Can be forgotten to close.

In the above embodiment, the lid opening / closing bar 15
Has been described in which the magnet 6 is embedded at the tip of the pot 5, but the magnet 6 is simply attached to the lower position of the lid 5, and the reed switch 7 is arranged at the upper position of the pot body 1 close to the magnet 6 when the lid 5 is closed. You may make it. Further, instead of the combination of the magnet 6 and the reed switch 7,
A micro switch can be attached to the upper position of the pot body 1 so that when the lid 5 is closed, the actuator of the micro switch is pressed. Further, any other detecting means such as a photodetector can be used for detecting the opening and closing of the lid 5.

In the above-described embodiment, the case where the buzzer sounds when the lid 5 is opened has been described. However, the LED lamp of the display operation unit 11 is made to blink, or other means such as sound, light, or vibration is used. An alarm can be issued.

Further, in the above embodiment, the alarm is issued immediately after the lid 5 is opened once. However, depending on the usage of the electric pot, it may be more convenient to issue the alarm only when the electric pot is opened a predetermined number of times or more. is there.

By the way, when supplying water again to the electric pot, the alarm can be prevented from being issued by removing the power cord and opening the lid 5. However, since there is a possibility that foreign matter may be mixed by intentionally removing the power cord and then opening the lid 5, even after the power cord is removed and the power is cut off, the power supply such as a capacitor or a backup battery may be used. Alternatively, it may be detected that the lid 5 is opened. However, in this case, it is necessary to set an operation for canceling the alarm in order to prevent the alarm in the case of normal water supply.

For example, it is possible to provide a lid lock mode in a state controlled by the microcomputer 8 and to issue an alarm when the lid 5 is opened only when the lid lock mode is set. Then, when supplying water, the lid 5 is opened after releasing the lid lock mode.
This lid lock mode can be automatically set when the power is turned on. Also, when the power is off,
Although the setting can be automatically canceled, the setting and the cancellation are automatically performed according to the ON / OFF of the power supply, which is the same as the case of the above-described embodiment.

The setting and release of the lid lock mode can be performed by operating the key 25 of the display operation unit 11.
In this case, as shown in FIG.
May be provided to set / cancel the lid lock mode. However, the setting / cancellation cannot be easily performed by anyone other than the electric pot user. The cancellation may be performed. Also,
As shown in FIG. 5, a password input is requested (S1).
1) It is also possible to set or release the lid lock mode only when the input password matches a preset password (S12) (S13). The password is input by pressing a numeric key or the like, and the password can be set arbitrarily first by the user. And when changing this password,
By requiring the input of the previous password, it prevents others from setting an arbitrary password.

At the time of setting the lid lock mode, the user is required to input a password as shown in FIG.
21) Even if the input password matches a preset password (S22), the water temperature detected by the water temperature sensor 9 is not 40 ° C. or higher (S2).
3), it is also possible not to set the lid lock mode (S24). That is, normally, the temperature of the water in the inner container 2 always drops to less than 40 ° C. at the time of supplying water. Therefore, if the lid lock mode can be set only at the time of water supply, it is safe even if a malicious person knows the password. For example, even if this person releases the lid lock mode of the electric pot while keeping the temperature by using a password and opens the lid 5 to mix in foreign matter, the lid lock mode cannot be reset, so the lid lock mode is not set. An abnormality can be known from the cancellation. The same applies when the lid lock mode is automatically released when the power is turned off. Here, the case of the authentication operation using the password has been described, but any other authentication operation may be used. Further, even when the lid lock mode is set by a normal predetermined operation instead of the authentication operation such as a password, the setting can be prevented from being accepted unless the water temperature is 40 ° C. or more. Further, the water temperature is not limited to 40 ° C., but can be set to an appropriate temperature.

FIGS. 7 to 9 show a second embodiment of the present invention. FIG. 7 is a partially enlarged longitudinal sectional view showing an opening / closing portion of a lid of an electric pot, and FIG. FIG. 9 is a flowchart showing an operation for urging the user to set a lid lock. Components having the same functions as those of the first embodiment shown in FIGS. 2 and 3 are denoted by the same reference numerals.

In the above embodiment, an electric pot similar to the conventional example shown in FIGS. 10 to 11 will be described. However,
As shown in FIG. 7, the electric pot of the embodiment has a lid lock lever 13 as a safety device. The lid lock lever 13 is a lever slidably or slidably attached to the upper position of the pot body 1. Is locked so that the lid 5 is not opened even when the lid opening / closing bar 15 is operated, that is, the lid 5 can be locked. A micro switch 14 is mounted near the lid lock lever 13. This micro switch 1
4 indicates that when the lid lock lever 13 locks the lid 5 (lid locked state), the actuator is opened and turned off.
However, as shown in FIG. 8, when the lid lock lever 13 is slid or rocked to release the lock of the lid 5, the actuator is pushed to turn on the contact. The microswitch 14 is connected to the microcomputer 8 shown in FIG. 3 instead of the reed switch 7 in the first embodiment, so that the open / close state of the contact can be detected.

The control operation for the safety device in the microcomputer 8 will be described with reference to the flowchart of FIG. When the power is turned on after the power cord is connected to the electric pot, first, the lid lock state of the lid lock lever 13 is detected based on whether or not the contact of the microswitch 14 is closed (S31). If the lid lock lever 13 has been operated to lock the lid after closing the lid 5, normal control of the electric pot is performed (S3).
2). However, if the lid is not locked,
Since there is a risk that the lid 5 may be inadvertently opened, an alarm is issued by blinking the LED lamp of the display operation unit 11 (S3).
3). Then, the process waits until the lid lock lever 13 is operated and the lid is locked. If the lid is not locked after 10 seconds (S34), the lid lock state of the lid lock lever 13 is changed again. After detection (S3
5), the buzzer of the display / operation unit 11 sounds and an alarm is issued (S36). Also, here, the operation waits until the lid lock lever 13 is operated and the lid is locked.
If the lid is not in the locked state even after the elapse of 0 seconds (S37), the control from the normal control of the electric pot is stopped. Thereby, it is possible to prevent the hot water from boiling when the lid 5 is easily opened.

The microcomputer 8 can continue to detect the lid lock state at any time even after the normal control of the electric pot in S32 is started. Then, when the lid lock lever 13 is operated to release the lid lock state during use of the electric pot, the buzzer of the display operation unit 11 sounds as in the case of the first embodiment shown in FIG. In this way, an alarm is issued, and dangers such as contamination of foreign substances can be prevented.

As described above, according to the electric pot safety device of the above embodiment, the electric pot cannot be used unless the lid lock lever 13 is operated to lock the lid after the lid 5 is closed. Even if the lid opening / closing lever 4 is erroneously operated, there is no danger of the lid 5 being opened carelessly. Further, it is possible to prevent a person from inadvertently operating the lid lock lever 13 to release the lid locked state and open the lid 5 to mix foreign matter. Further, it is possible to reliably prevent the lid 5 from being forgotten to be closed.

In the above embodiment, the case where the lid lock state is detected by the microswitch 14 has been described. However, the combination of the magnet 6 and the reed switch 7 of the first embodiment may be used, or any other detection means may be used. Can be used.

In the above embodiment, the case where the lid lock lever 13 is operated by a person to lock the lid has been described. However, the lid lock lever 13 and the like are operated by the operation of a drive device such as an electromagnetic solenoid. You can also An electromagnetic solenoid is a driving device that reciprocates or rotates a magnetic actuator by magnetism generated in a coil. Normally, this actuator is biased by a spring or the like, and the spring is applied to the coil when a current is supplied to the coil. By operating this actuator in opposition, the lid lock lever 13 and the like can be moved. in this case,
The microcomputer 8 may operate an electromagnetic solenoid or the like in accordance with the setting / release of the lid lock mode described in the first embodiment. Further, in this case, since the lid lock state is determined by the operation of the electromagnetic solenoid or the like, it is not necessary to separately provide a detector such as the microswitch 14 and the like, and an operation unit for attaching a finger to the lid lock lever 13 and the like becomes unnecessary. . If the actuator is urged by a spring or the like when the power is turned off, the lid lock lever 13 and the like are set to the lid locked state so that the lid lock mode is not released even when the power is turned off. it can.

[0071]

As apparent from the above description, according to the electric pot safety device of the present invention, an alarm is issued when the lid is opened, so that another person can inadvertently open the electric pot lid to remove foreign matter. It can be prevented from being mixed. Also, by setting the lid lock mode, it is possible to prevent the lid from being easily opened by anyone, so that the risk of foreign matter being mixed in can be prevented beforehand, and children can open the lid carelessly. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a flow chart showing a first embodiment of the present invention and showing an operation of an electric pot safety device.

FIG. 2 shows the first embodiment of the present invention, and is a partially enlarged longitudinal sectional view showing an opening / closing portion of a lid of an electric pot.

FIG. 3, showing the first embodiment of the present invention, is a block diagram illustrating a configuration of a control unit of a safety device for an electric pot.

FIG. 4 shows the first embodiment of the present invention, and is a plan view of a display operation unit of an electric pot.

FIG. 5 is a flowchart illustrating a setting / releasing operation of a lid lock mode using a password according to the first embodiment of the present invention.

FIG. 6 shows the first embodiment of the present invention, and is a flowchart showing an operation when accepting a setting of a lid lock mode according to a water temperature.

FIG. 7 shows a second embodiment of the present invention, and is a partially enlarged longitudinal sectional view showing an opening / closing portion of a lid of an electric pot.

FIG. 8 shows the second embodiment of the present invention, and is a partially enlarged longitudinal sectional view when a micro switch is turned ON by a lid lock lever.

FIG. 9 shows the second embodiment of the present invention, and is a flowchart showing an operation for urging the user to set a lid lock.

FIG. 10 is a vertical sectional view of the electric pot.

FIG. 11 is a longitudinal sectional view of the electric pot when a lid is opened.

[Explanation of symbols]

 Reference Signs List 1 pot body 4 lid opening / closing lever 5 lid 6 magnet 7 reed switch 8 microcomputer 9 water temperature sensor 11 display / operation section 13 lid lock lever 14 micro switch 15 lid opening / closing bar 28 body

Claims (22)

[Claims] An open / closed state of a lid is detected in an electric pot having a container, an inner container provided in the container, a heater for heating a liquid in the inner container, and a lid for opening the inner container. Lid opening / closing detecting means, alarm operating means for setting ON / OFF of an alarm, and an alarm is issued when the lid opening / closing detecting means detects an open state of the lid when the alarm operating means is set to ON. A safety device for an electric pot, comprising an alarm means. 2. An electric pot comprising a container, an inner container provided in the container, a heater for heating the liquid in the inner container, and a lid for opening the inner container. And a lid lock means for mechanically locking the lid so that the lid is not opened when the lid lock mode is ON. Safety device. 3. The lid opening / closing detecting means according to claim 1, wherein the lid opening / closing detecting means detects opening / closing of the lid based on whether or not the lid is pressing an actuator of a micro switch provided on the pot body side. The safety device for an electric pot according to claim 1. 4. The lid opening / closing detecting means according to claim 1, wherein the lid opening / closing detecting means detects opening / closing of the lid based on whether a magnet attached to the lid is close to a reed switch provided on the pot body side. Item 2. The safety device for an electric pot according to Item 1. 5. The alarm device according to claim 1, wherein the alarm unit issues an alarm only when the lid opening / closing detecting unit detects that the lid has been opened more than a predetermined number of times. The safety device for an electric pot according to claim 4. 6. The alarm device according to claim 1, wherein the alarm means issues an alarm only when the lid opening / closing detecting means detects an open state of the lid for a predetermined time or more. The safety device for an electric pot according to claim 4. 7. The alarm means issues an alarm,
7. The electric pot safety device according to claim 1, wherein the predetermined operation is invalidated. 8. A safety device for an electric pot according to claim 1, wherein said alarm means issues an alarm by sound. 9. The safety device for an electric pot according to claim 1, wherein the alarm means issues an alarm by light. 10. A lid opening / closing detecting means, an alarm operating means, and an alarming means according to claim 1, and a lid lock operating means and a lid locking means according to claim 2, wherein the lid lock operating means turns on a lid lock mode. A safety device for an electric pot, wherein the alarm operation means is set to ON when set. 11. The electric pot safety device according to claim 10, wherein the lid opening / closing detecting means detects a locked state of the lid locking means. 12. The lid lock mode is automatically set to ON when the lid lock means mechanically locks the lid so as to prevent the lid from being opened. The safety device for an electric pot according to claim 10. 13. The lid lock device according to claim 2, wherein the lid lock means locks and / or unlocks the lid by an operation of an electromagnetic solenoid. A safety device for an electric pot as described. 14. The electric device according to claim 2, wherein the lid lock operation means sets a lid lock mode to ON by a predetermined operation. Pot safety device. 15. The apparatus according to claim 2, wherein said lid lock operation means sets a lid lock mode to ON by a predetermined authentication operation.
4. The safety device for an electric pot according to any one of 3 above. 16. A lid lock non-setting alarm means for issuing an alarm for urging the user to set the lid lock mode to ON at the start of energization is provided. The safety device for an electric pot according to claim 1. 17. The electric pot according to claim 2, wherein the lid lock mode is automatically set to ON at the start of energization. Safety device. 18. The lid lock mode according to claim 2, wherein the lid lock mode is not set to ON unless the water temperature in the pot is lower than a predetermined temperature. Safety device for electric pot. 19. The lid lock operating means sets the lid lock mode to OFF by a predetermined operation.
The safety device for an electric pot according to any one of the above. 20. The apparatus according to claim 2, wherein the lid lock operation means sets the lid lock mode to OFF by a predetermined authentication operation. Safety device for electric pot. 21. The lid lock mode according to claim 2, wherein the lid lock mode is automatically set to OFF when power is cut off. Safety device for electric pot. 22. A lid lock mode display means for displaying ON / OFF setting of the lid lock mode is provided.
The safety device for an electric pot according to any one of the above.