JP2000126038A - Toaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide good toast without giving an uncomfortable feeling by alarm sound to a user by making an alarm means inoperable when a current is carried to a heater, and operating the alarm means only when the heater is switched from current-carrying state to non-current carrying state. SOLUTION: When a switch 13 is closed to start the current carrying to toasting heaters 5, 6 and 7, a control means 28 starts to operate according to the signal from a heater current-carrying detecting circuit 23. Even after the switch 13 is opened to stop the current carrying to the toasting heaters 5, 6 and 7, the operation of the control means 28 is continued by a power source holding circuit 36. When the control means 28 is operated, a voltage is simultaneously supplied to a timer circuit 41 and an alarm means 45. However, since digital transistors 43 and 44 are in ON state by the signal from the heater current-carrying detecting circuit 23, no current is carried to the timer circuit 41 and the alarm means 45, and the timer circuit 41 and the alarm means 45 are thus not operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toaster for baking sliced bread pieces.

[0002]

2. Description of the Related Art In general, a so-called pop-up toaster having a roasting chamber having a charging port on an upper surface and heating a piece of bread inserted from the charging port with a pair of heating elements,
A device has been devised to notify the user that the roasting of the bread has been completed. For example, in the toaster described in Japanese Utility Model Application Laid-Open No. 62-199026, a bell is provided outside the roasting chamber, and a punching member is provided which separates when the pan cradle is lowered and punches the bell when raised. When the roasting of the bread is completed and the bread cradle is raised, the bell is sounded to inform the user of the finished bread.

In the toaster disclosed in Japanese Utility Model Laid-Open Publication No. 63-18928, a switch is provided which is closed by the vertical movement of the pan support, and the plunger is operated by closing the switch. A configuration of a toaster in which a bell is stamped by an electric configuration is disclosed.

[0004]

However, since the conventional toaster is configured to notify the user of the completion of the roasting by stamping a bell, the notification sound is completed only for a moment, so that the toaster is not used. Even if the person is away from the device or close to the device, there is a risk that the notification sound of the completion of the roasting may be missed because the noise is drowned out by other surroundings. Further, in the configuration in which the switch is provided and the end notification is performed electrically, the bell is stamped when the bread cradle is lowered and when the bread cradle is raised after the roasting of the bread, so that the roasting of the bread is completed. In addition to the notification sound for notifying the user of the fact, the notification sound was also generated unnecessarily at the start of the roasting of bread, which could be annoying to the user. The present invention relates to a toaster and solves the above-mentioned problems. The present invention does not give a user an unpleasant sensation due to a notification sound, and a delicious toast without missing a good eating time immediately after the user has baked. It is intended to provide a toaster that can obtain

[0005]

According to the first aspect of the present invention, the surface of the bread is roasted by a heater provided in the main body, and when the bread is in a predetermined baking state, the heater is connected to the heater. In the toaster for stopping the energization and ending the roasting, a notifying unit for notifying that the roasting is completed, a heater energization detecting unit for detecting an energized state of the heater, and a signal from the heater energization detecting unit And control means for disabling the notification means when the heater is energized, and operating the notification means only when the heater is switched from the energized state to the non-energized state. In the invention described in claim 2, a case provided with an opening for bread insertion and removal at the upper part, a bread storage space provided below the opening in the case, and a vertically movable up and down movement are arranged in the bread storage space. A placing member on which the slice bread is placed, a roasting heater disposed on a side surface of the bread storage space, and energized when the placing member is positioned at a lower end side of the bread storage space; A switch for detecting that the placing member is located at the lower end side of the bread storage space, a notifying unit for notifying that the roasting of the bread has been completed, and a control unit for controlling the notifying unit, When the switch is turned on, the control means starts power supply to the notifying means, and when the switch is turned on, the control means disables the notifying means, and the switch turns off the switch. It is obtained by a notification unit operation switching means for operating the informing means when off. According to these configurations, when the pan is set in the main body and heating by the heater starts, the control unit prohibits the notification by the notification unit while the heater is energized, and the control unit switches from the energized state to the non-energized state. When detected, the notification by the notification means is started. That is, before the roasting is started and during the roasting, the notifying unit does not operate, and the notifying unit operates only when the roasting is completed. Therefore, besides notifying that the roasting is completed (for example, Unnecessarily sounding of the notification sound can be prevented (just by plugging the power plug into the outlet), and the notification sound is meaninglessly sounded before roasting of the bread, so that the user is not discomforted. Further, in the invention according to claim 3 of the present invention, the control means includes a timer means for continuing the operation for a predetermined time after the operation of the notification means. According to this configuration, when the roasting of the bread is completed, the user is notified of the completion of the roasting for a predetermined time. Therefore, since the sound of the end notification is not instantaneously ended but is continuously performed for a predetermined time, it is reduced that the sound is mixed with the noise around the device, and the notification sound is generated even when the user is away from the device. , It is possible to provide a delicious toast immediately after the roasting without losing the timing of taking out the bread. Further, in the invention according to claim 4 of the present invention, the notification means is configured to generate a melody. According to this configuration, the notification of the end of the roasting is notified as a melody for a predetermined time. As described above, when the end notification is continuously performed for a predetermined time, it becomes difficult for the user to miss the notification sound, and a delicious toast immediately after the completion of roasting can be provided. However, on the other hand, if a single buzzer sound or the like sounds as a notification sound continuously for a predetermined time, it may result in unpleasant discomfort to the user, which may hinder the taste of the freshly baked toast. Therefore, by making the end notification a melody, even if the end notification sounds continuously for a predetermined period of time, the user does not feel discomfort, but rather the melody eases the feeling and makes it possible to have a pleasant meal. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The toaster of the present invention shown in FIGS. 1 to 3 will be described in detail below. FIG. 1 is an overall perspective view of the toaster of the present invention, FIG. 2 is a partial cross-sectional view showing the internal configuration of the toaster, and FIG. 3 is a circuit diagram. In the figure, reference numeral 1 denotes the entire toaster. Case 2 of toaster 1
On the upper surface, two generally rectangular openings 3 and 4 for inserting a bread are provided side by side in the horizontal direction. In the internal space of the case 2, two holes corresponding to the openings 3 and 4 for inserting the bread are provided.
The roasting heaters 5, 6, 7 having a total of three planar shapes are provided. Each of the roasting heaters 5, 6, 7 includes a heater plate made of a mica plate (not shown) and a nichrome wire (not shown) wound around the heater plate. Then, they are opposed to each other in a horizontal direction substantially parallel and at a required interval, and these opposed spaces constitute two storage spaces 8 for storing slice bread. The first roasting heater 6 at the center and the second roasting heater 5 at one side are provided.
And baking both sides of the sliced bread stored in one bread storage space, and the first roasting heater 6 at the center and the third roasting heater 7 at the other side store the bread on the other side. Both sides of the sliced bread stored in the space are baked. In the bread storage space 8, a mounting bar 9 on which a slice bread is mounted is arranged so as to be able to move up and down. One end of the mounting bar 9 projects out of one side of the case, and a single connecting plate 10 is attached to these two projecting ends. An operating lever 10a is formed integrally with the connecting plate. The mounting bar 9 is lowered by the user grasping and lowering the operation lever 10a. Further, when the mounting bar 9 is lowered to a predetermined lower position, the mounting bar 9 is held by the holding mechanism 11 so as not to be moved at that position. On the other hand, when the holding operation by the holding mechanism is released by a release mechanism (not shown), the mounting bar 9 is raised by the action of a spring (not shown). When the mounting bar 9 is held at the lower position, the protruding piece 10b formed integrally with the connecting plate
3 is configured to be pressed. The switch 13 has a function of turning on and off the power supply to the roasting heaters 5, 6, and 7. When pressed, the contact of the switch is closed, and the power supply to the roasting heater is started. The above-mentioned release mechanism is configured so that the user can finely adjust the operation timing by a baking adjustment knob 12 provided outside one side of the case. Next, the circuit will be described with reference to FIG. Reference numeral 14 denotes an energization control unit for operating the release mechanism. The energization control means includes an energization heater 15 and a bimetal plate (not shown). The bimetal plate is deformed by the heat of the energization heater 15, and the release mechanism is operated by the deformation force of the bimetal plate. The holding operation of the holding mechanism 11 is released. In addition, by operating the baking adjustment knob 12 provided on one side outside of the case,
The operation timing of the release mechanism using the bimetal plate can be finely adjusted. And the energization heater 15 is roasting heaters 5, 6,
7 and the roasting heaters 5, 6, 7 are connected in series with the switch 13. When the switch 13 is opened, the roasting heaters 5, 6, 7 and the energizing heater 1 are connected.
The power supply to 5 stops. A constant voltage power supply circuit 17 includes a resistor 19 connected in series with the diode 18, a zener diode 20 connected in series with the resistor 19, and a capacitor 22 connected in parallel with the zener diode 20. 23 is a heater energization detecting means,
A diode 25 connected to a connection point 24 between the heater and the roasting heaters 5, 6, 7, a resistor 26 connected in series with the diode 25, and a capacitor 27 connected in series with the resistor 26
It is composed of

[0007] 28 is a control means, a power holding circuit 36,
The circuit includes a timer circuit 41 and transistors with built-in resistors (hereinafter referred to as digital transistors) 43 and 44 whose bases are connected to a connection point 42 between the resistor 26 and the capacitor 27 of the heater conduction detection circuit 23.

The power holding circuit 36 has a digital transistor 29 whose emitter is connected to a power line, a transistor 30 whose collector is connected to the base of the digital transistor 29, and is connected between the base and the emitter of the transistor 30. A resistor 31 connected to the collector of the digital transistor 29;
3 connected between the resistor and the base of the transistor 30
3 and a diode 35 connected between the connection point 34 between the resistors 32 and 33 and the heater energization detection circuit 23.

The timer circuit 41 includes a power supply holding circuit 3
6. A programmable unijunction transistor 3 having a gate connected to a connection point 34 between the resistor 32 and the resistor 33
7 (hereinafter referred to as PUT), a resistor 38 connected between the power supply line and the anode of the PUT 37, and a resistor 38 and PU
It is composed of a capacitor 40 connected between a connection point 39 with T37 and a cathode of the PUT 37.

The digital transistor 43 serves to start the timer circuit 41 in response to a signal from the heater power detection circuit 23. The digital transistor 43 has a base connected to a connection point 42 with the heater power detection circuit 23, and a collector connected to the timer circuit. 41 is connected to the connection point 39.

The digital transistor 44 is
The function is to stop the notifying means 45 described later by a signal from the heater energization detecting circuit 23. The base is connected to the connection point 42 with the heater energizing detecting circuit 23, and the collector is connected to the notifying means 45. .

Reference numeral 46 denotes a constant voltage circuit for supplying a voltage to the notifying means 45, which comprises a resistor 47 and a Zener diode 48.

Reference numeral 45 denotes a notifying means, which is a melody IC 49.
And a sound generating element 50. This melody IC
49 stores all the predetermined music pieces, and is configured so that the melody stored in the IC is played by the sound generation means 50 while the notification means 45 is energized. Reference numeral 51 denotes a resistor connected between the constant voltage circuit 46 and the melody IC 49.

Next, the operation of the embodiment will be described. First, when the power plug is inserted into the outlet, 100 V AC is applied to the constant voltage circuit 17 including the diode 18, the resistor 19, the zener diode 20, and the capacitor 22, and the apparatus enters a standby state. Then, the operation lever 10
When a is pressed down by the user and the switch 13 is pressed by the protruding piece 10b, the contact of the switch 13 is closed and AC is applied to the roasting heaters 5, 6, 7 and the energizing heater 15.
A voltage of 100 V is supplied and heating of the pan is started.

When the switch 13 is closed, a voltage is also supplied to the heater conduction detection circuit 23, and a signal from the heater conduction detection circuit 23 is supplied to the control means 28. The voltage from the heater conduction detection circuit 23 is input to the base of the transistor 30 via the diode 35 and the resistor 33, and the transistor 30 is turned on. As a result, a base current flows through the digital transistor 29, so that the digital transistor 29 is also turned on, and the resistor 32 and the resistor 3
3, a current flows through the base of the transistor 30.
The transistor 30 continues to be ON even after the signal from the heater energization detection circuit 23 stops. At the same time, the voltage from the heater conduction detection circuit 23 is supplied to the bases of the digital transistors 43 and 44, so that the transistors 43 and 44 are turned on.

As described above, when the switch 13 is closed and the energization of the roasting heaters 5, 6, and 7 starts, the control means 28 starts operating in response to a signal from the heater energization detection circuit 23. Then, even after the switch 13 is opened and the energization of the roasting heaters 5, 6, 7 is stopped, the operation of the control means 28 is continued by the power supply holding circuit 36. When the control means 28 operates, a voltage is simultaneously supplied to the timer circuit 41 and the notification means 45, but the digital transistor 4 is supplied by a signal from the heater conduction detection circuit 23.
Since 3 and 44 are in the ON state, no current flows through the timer circuit 41 and the notifying unit 45, so that the timer circuit 41 and the notifying unit 45 do not operate. Thereafter, when the toast is baked to a predetermined state, at this time, the energizing heater 15 of the energizing control means 14 generates considerable heat, the bimetal plate is deformed by a predetermined amount, and the holding operation of the holding mechanism 11 is stopped. It is released. Then, the mounting lever 9 is raised and the switch 13 is opened, the power supply to the roasting heaters 5, 6, and 7 is stopped, and the roasting of the bread is completed.

When the switch 13 is opened, the power supply to the heater power supply detection circuit 23 is also stopped, so that no current flows to the bases of the digital transistors 43 and 44, and the digital transistors 43 and 44 are turned off.

As a result, current is supplied to the timer circuit 41 and the notification means 45, and the timer circuit 41 starts operating and the notification means 45 finishes toasting the toast for the user. Notification (melody playing) starts.

When the current starts to be supplied to the timer circuit 41, a DC voltage is applied to the capacitor 40 via the resistor 38, and charging is started. Then, when the anode voltage of the PUT 37 increases with the passage of time and becomes the same potential as the gate (when the timer circuit 41 operates and a predetermined time has elapsed), the gate and the cathode of the PUT 37 conduct. Thus, no current flows to the base of the transistor 30, and the transistor 30 is turned off. Then, no current flows to the base of the digital transistor 29, and the digital transistor 29 is turned off similarly to the transistor 30, and the self-holding is released. Accordingly, energization of the timer circuit 41 and the notification unit 45 is stopped,
When the melody stops playing, the timer circuit 41
Operation is also stopped. In other words, the melody playing by the notification means 45 is continued for a predetermined time until the voltage of the anode of the PUT 37 becomes equal to the gate voltage after the charging of the capacitor 40 of the timer circuit 41 is started. The performance time can be changed by appropriately selecting the capacity of the capacitor 40. For example, the entire song may be played, only a predetermined bar may be played, or a time may be set that allows the performance to be repeated a plurality of times. Here, digital transistor 4
Reference numeral 4 corresponds to the notifying means dynamic switching means of the present invention.

Although the melody IC is used in the above embodiment, it is also possible to use a voice IC to notify by voice that roasting has been completed. In this embodiment, the pop-up toaster has been described. However, the pop-up toaster can be used for an oven toaster.

[0021]

According to the present invention, the informing means does not operate before the roasting is started and during the roasting, and the informing means operates only when the roasting is completed. Unnecessary beeping can be prevented besides notifying that it has finished, and the beeping sounds without meaning before roasting the bread,
There is no discomfort to the user. In addition, when the roasting of the bread is completed, the user is notified of the completion of the roasting continuously for a predetermined time, so that it is difficult for the user to hear the noise around the device, Since it is difficult for the user to miss the notification sound even when the user is away from the side, the user does not miss the timing of taking out the bread, and it is possible to provide a delicious toast immediately after the completion of roasting.

Further, since the notification of the end of the roasting becomes a melody and is notified for a predetermined time, even if the notification of the end is continuously sounded for a predetermined time, the user does not feel uncomfortable, but rather the feeling is felt by the melody. It is possible to relax and enjoy eating.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a toaster of the present invention.

FIG. 2 is a partial sectional view showing the internal configuration of the toaster of the present invention.

FIG. 3 is a circuit diagram of the toaster of the present invention.

[Explanation of symbols]

 5, 6, 7 Heater 45 Informing means 23 Heater energization detecting means 28 Control means

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Seiji Koyabu, Seikacho, Soraku-cho, Kyoto Prefecture 1st character, Shoda-sho, 1st Shoda, 2nd Sanyo Home Tech Co., Ltd. Large-sized celebration garden small-sized Masada 1 No. 2 Sanyo Home Tech Co., Ltd. F term (reference) 3L087 AA02 BB20 BC09 BC14 CB01 CC04 DA24

Claims (4)

[Claims] 1. A toaster which roasts the surface of a bread with a heater provided in a main body and stops the power supply to the heater when a predetermined baking state is reached, and finishes the roasting. Notification means for notifying that the power supply has been completed; heater power supply detection means for detecting the power supply state of the heater; and a signal from the heater power supply detection means. And a control means for operating the notification means only when the heater is switched from the energized state to the non-energized state. 2. A case in which an opening for inserting and removing bread is provided at an upper part, a bread storage space provided below the opening in the case, and a slice pan which is arranged in the bread storage space so as to be able to move up and down. A placing member to be placed, a roasting heater that is disposed on a side surface of the bread storage space, and is energized when the placing member is located at a lower end side of the bread storage space, and the placing member is A switch for detecting that it is located at the lower end side of the bread storage space, a notification unit for notifying that the roasting of the bread has been completed, and a control unit for controlling the notification unit, wherein the control unit is Power supply holding means for starting power supply to the notification means when the switch is turned on, and disabling the notification means when the switch is turned on; Toaster being characterized in that a notification unit operation switching means for operating the informing means. 3. The control means, after the operation of the notification means,
3. The toaster according to claim 1, further comprising timer means for continuing this operation for a predetermined time. 4. A toaster according to claim 3, wherein said notifying means generates a melody.