JP2001178632A - Toaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pop-up type toaster capable of preventing the thermal deterioration of a speaker giving information that toasting is completed. SOLUTION: A sound generation means for giving information on the toasting state of bread is provided on the side of one side end, which opposes the other side end where a lever for vertically moving operating, of a main body case.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Generally, in a pop-up toaster, a slice pan is automatically baked in a state in which a slice pan is inserted into an internal heating chamber from a bread insertion port provided on an upper surface of a main body case. It can jump out of the bread insertion opening.

[0003] The heating chamber is formed in a rectangular cylindrical shape by connecting both ends of a pair of heater panels, which are disposed to face each other in a substantially parallel manner with a required space therebetween, with heat shield plates.

[0004] In the heating chamber, there is provided a pan receiver on which a slice pan can be placed and moved up and down. The pan receiver is always urged upward by a spring. At one end of the pan receiver, a lever is mounted which protrudes outside from a guide hole of one of the heat shield plates forming the heating chamber.

At one longitudinal end of the heating chamber, there is provided a latch mechanism for restraining the pan receiver at the lowered position or allowing the pan receiver to rise, and controlling the latch mechanism and driving the heater panel. A control device for controlling time or the like is arranged in close proximity.

[0006]

In the above prior art, the guide hole is provided in one of the heat shield plates of the heating chamber so that the pan receiver in the heating chamber can be moved up and down. However, there is a problem that the control device disposed on the side of the heat shield plate provided with the guide holes is exposed to a high-temperature atmosphere.

By the way, the applicant of the present invention filed Japanese Patent Application No. 10-29.
No. 9561 has already proposed a pop-up toaster that can notify the end of roasting by melody or voice. In this pop-up toaster, when it is detected that the roasting of the bread has been completed, the melody and voice are notified by a sounding means (piezoelectric buzzer) provided on the control board, and the user is notified that the roasting has been completed. Is notified.

In such a pop-up type toaster, in order to further improve the notification performance, the melody and the sound are clearly generated by forming the sound generating means with a speaker having a diaphragm made of cone paper or the like. So more desirable.

However, many of such speakers generally have a lower heat-resistant temperature than other electric parts, and in a device having a heater such as a pop-up toaster and having a small internal space, the speaker is not suitable. There is a problem that the speaker is exposed to a high-temperature atmosphere, and there is a concern that the life of the speaker may be shortened or the sound quality may be deteriorated due to thermal deterioration.

[0010] Further, when the bread is heated, the humidity inside the main body case is increased by water vapor evaporating from the bread, and from this point, the life of the speaker and the sound quality may be reduced.

The present invention relates to a pop-up type toaster which solves the above-mentioned problems, and has an object to provide a structure capable of preventing heat deterioration and sound quality deterioration of a control device and sound generating means.

[0012]

According to the first aspect of the present invention, a pan receiver is disposed in a heating chamber covered with a main body case so as to be able to move up and down and a lever for raising and lowering the pan receiver. Is attached to the heating chamber and the main body case so as to protrude outward from one side end of the main body case. A sound generating means for notifying the state of grilling was provided.

[0013] In this configuration, since the sound generating means is arranged away from one end of the main body case provided with the operation lever for the pan receiving and lifting operation, the hot air in the heating chamber is formed on the heat shield plate. The operating lever leaks out of the guide hole in which it moves, making it difficult to touch the sounding means.

According to the present invention, there is provided a pop-up type toaster having a slice pan insertion / removal opening on an upper surface of a main body case, wherein the heating chamber is disposed in the main body case and a heater panel is arranged to face the heating chamber. A pan receiver disposed in the heating chamber so as to be able to move up and down, and provided at one end of the pan receiver so as to protrude outward from one end of the heating chamber and the main body case; A lever for raising and lowering the tray, sounding means for notifying the state of roasting of the bread, and control means for controlling the sounding means, wherein the control means forms the heating chamber Of the wall portions to be provided, the sound generation means is provided at the other side end opposite to one side end of the main body case, and is provided outside the wall portion on which the operation lever is not provided. did.

In this configuration, since the control means for driving the sound generating means can be provided at a position farthest from the heat shield plate provided with the operation lever, leakage from the heating chamber through the guide hole of the heat shield plate is prevented. The emitted hot air is less likely to reach the control means.

In the invention according to claim 3 of the present invention, the sound generator comprises a speaker and a speaker box for accommodating the speaker, and the speaker box is disposed separately from the main body case.

The sound generating means is provided at a position as far as possible from the guide hole of the heat shield plate, further housed in a speaker box, and this box is separated from the main body case, so that the hot air from the main body case is hardly transmitted to the speaker. Become.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a pop-up toaster of the present invention shown in FIGS. 1 to 5 will be described in detail. FIG.
FIG. 2 is an overall perspective view of the toaster of the present invention, FIG. 2 is a partial sectional view showing the internal structure of the toaster, FIG.
Is an overall perspective view from the speaker box side, and FIG. 5 is a circuit diagram. In the figure, reference numeral 1 denotes the entire toaster. On the upper surface of the main body case 2 of the toaster 1, two generally rectangular openings 3 and 4 for bread insertion are provided in a horizontal direction.

In the internal space of the main body case 2, two sets of roasting heaters 5, 6, 7 having a total of three planar shapes are provided corresponding to the openings 3, 4 for inserting the bread. Each of the roasting heaters 5, 6, and 7 includes a heater plate made of a mica plate (not shown) and a nichrome wire (not shown) wound around the heater plate, and a first heat shield plate connecting both ends thereof. 14a and the second heat shield plate 14b are formed in a rectangular tube shape.

The roasting heaters 5, 6, and 7 are arranged in parallel with each other at a required interval substantially in the horizontal direction, and these opposed spaces form two heating chambers 8 for accommodating a slice pan. It has become. The first roasting heater 6 in the center and the second roasting heater 5 on one side bake both sides of the sliced bread stored in one heating chamber 8, and the first roasting heater in the center. Heater 6 and third on the other side
The roasting heater 7 is used to bake both sides of the sliced bread stored in the remaining heating chamber 8 on one side.

In the heating chamber 8, a loading bar 9 serving as a pan receiver on which a slice bread is placed is arranged so as to be able to move up and down. The mounting bar 9 is always urged upward by a coil spring (not shown). One end of the mounting bar 9 projects out of one side of the heating chamber 8 through the guide hole 15 of the first heat shield plate 14a. A single connecting plate 10 is provided at these two projecting ends. Installed. An operating lever 10a is formed integrally with the connecting plate, and extends outward from one side end of the main body case 2, and a handle 10c having a shape easy for a person to hold is attached to the end. ing.

The placing bar 9 is lowered by the user gripping and lowering the handle 10c. 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. The holding mechanism 11 restrains the mounting bar 9 at a lowered position. On the other hand, when the holding operation by the holding mechanism 11 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 10 is configured to press the switch 13. 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 switch contacts are closed, and the power supply to the roasting heaters 5, 6, and 7 starts. Is done.

The above-described release mechanism is configured so that the operation timing can be finely adjusted by a user by a baking adjustment knob 12 provided on one side and outside of the case. The baking adjustment knob 12 is for adjusting the degree of baking of the sliced bread to be roasted.

Reference numeral 16 denotes a speaker box.
The speaker box 16 is provided with a speaker 17 serving as a sound generating means having a diaphragm made of cone paper or resin inside the speaker box 16, and a user turns on / off a notification sound arbitrarily from the speaker at an upper part. A notification sound ON / OFF switch 18 is provided internally. A plurality of small holes 16b are formed on one side surface 16a for passing the notification sound from the speaker 17.

The speaker box 16 is disposed on the side wall 2b opposite to the main body case side wall 2a on the side where the operation lever 10a is provided with the heating chamber 8 as a center. The speaker box 16 is located outside the main body case 2.

A base 19 is provided below the main body case 2. At both ends in the longitudinal direction of the base 19, handles 20 a and 20 a are provided so that the toaster 1 can be easily carried by a person.
20b is formed so as to protrude. This handle 20a, 20
b, the speaker box 16 is mounted on a handle 20b provided on the side wall 2b side of the main body case 2. A predetermined space is provided between the speaker box 16 and the side wall 2b of the main body case 2.

A control board 21 is provided in a space between the side wall 2b of the main body case 2 and the second heat shield plate 14b forming the heating chamber 8. 33 is a base mounting bracket.

As shown in FIG. 5, the control board 21 stores a rectifier circuit 22 for rectifying a household AC power supply, a heater power supply detection circuit 23 for detecting power supply to the roasting heater, and a melody and voice. An audio LSI 24, a signal processing circuit 25 for controlling a notification sound, a speaker driving circuit 26 for driving a speaker, a sound ON / OFF circuit 27 for selecting on-off of a notification sound from the speaker, and a constant voltage circuit 29. have. 28 is a transformer and Z1 is a surge absorber.

Reference numeral 30 denotes an energization control means for operating the release mechanism, comprising an energization heater 31 and a bimetal plate (not shown). The bimetal plate is deformed by the heat of the energization heater 31,
The release mechanism operates by the deformation force of the bimetal plate, and the holding operation of the holding mechanism 11 is released. The operation timing of the release mechanism using the bimetal plate can be finely adjusted by operating the baking adjustment knob 12.

The energizing heater 31 is connected in series with the roasting heaters 5, 6, 7 and the roasting heaters 5, 6, 7 are connected in series with the switch 13, and the switch 13 is opened. Then the roasting heaters 5, 6, 7 and
Power supply to the power supply heater 31 is stopped.

The heater energization detection circuit 23 includes a diode D1 connected to a connection point between the switch 13 and the roasting heaters 5, 6, and 7, a resistor R1 connected in series with the diode D1, and a resistor R1. And a photocoupler PC1 connected in series.

The rectifier circuit 22 includes a diode bridge D2 and a capacitor C1, and the constant voltage circuit 29 includes a three-terminal regulator IC2 and a capacitor C1.
And 2.

The signal processing circuit 25 includes a resistor R2 connected between the collector of the photocoupler PC1 of the heater conduction detection circuit 23 and the base of a transistor with a built-in resistor (hereinafter referred to as a digital transistor) Q1, and a resistor R2 and a digital digital Q1. Capacitor C4 connected between emitter
A capacitor C5 connected to the collector of the digital transistor Q1, a resistor R3 connected between the capacitor C5 and the emitter of the photocoupler PC1 of the heater detection circuit 23, and a capacitor R5 connected between the emitter and the collector of the digital transistor Q1. And a diode D3 connected to the

A digital transistor Q3 whose base is connected to the collector of the digital transistor Q1
A resistor R4 connected to the collector of the digital transistor Q3; a digital transistor Q2 connecting the base to the resistor R4;
Capacitor C6 connected between the base and the emitter of
A resistor R5 connected to the collector of the digital transistor Q2, and a resistor R6 connected between the resistor R5 and the emitter of the digital transistor Q3.
And a diode D6 connected between the connection point of the resistors R6 and R5 and the collector of the digital transistor Q3.

The sound ON / OFF circuit 27 outputs a notification sound ON.
A resistor R10 connected in series to the / OFF switch 32
And a resistor R11 connected in series to the resistor R10.

The speaker driving circuit 26 includes a diode D
4, a resistor VR1 connected in series to the resistor VR1, a resistor R7 connected to the resistor VR1, a transistor Q4 having an emitter connected to the resistor R7 and a collector connected to the speaker SP1, and a resistor connected to the base of the transistor Q4. R8.

Next, the operation of the embodiment will be described. First, the loading bar 9 is kept in the upper position. When the power plug is inserted into the outlet, the AC 100 V
Is rectified by the rectifier circuit 22,
The voltage is converted to a constant voltage of V and the apparatus enters a standby state. Then, the sliced bread is inserted into the bread insertion openings 3 and 4 of the main body case 2 and the sliced bread is placed on the placing bar 9. When the operation lever 10a is pressed down by the user, the mounting bar 9 is lowered and the slice pan is immersed in the heating chamber 8.

At this time, the switch 1 is
3 is pressed, the contact of the switch 13 is closed, and the roasting heaters 5, 6, 7 and the energizing heater 31 are connected to the AC100.
The V voltage is supplied to start heating the pan. The mounting bar 9 pushed down in this manner is held at the lower position by the holding mechanism 13.

When the switch 13 is closed, a current also flows through the heater conduction detection circuit 23, and a signal from the heater conduction detection circuit 23 is supplied to the signal processing circuit 25.
In response to a signal from the heater current detection circuit 23, the resistance R
2. A current is input from the capacitor C4 to the base of the digital transistor Q1, and the digital transistor Q1 is turned on.
I do. As a result, a pulse is input to the input port SW0 of the audio LSI 24 by the capacitor C5 and the resistor R3. When there is an input to the input port SW0 of the audio LSI 24, a notification sound or a sound indicating that the roasting of bread is to be started flows from the speaker and a melody indicating that the roasting is being performed continues from the speaker 17 during the roasting. It will flow.

When the digital transistor Q1 is turned on, a current is input to the base of the digital transistor Q3, the digital transistor Q3 is turned on, and the capacitor C6 is charged through the resistor R4.

At this time, a current is also input to the base of the digital transistor Q2, and the digital transistor is turned on.
Then, although the current of the resistor R5 flows, the diode D6 conducts, so that it is not input to the SW1 of the audio LSI.

Thereafter, when the sliced bread is baked to a predetermined state, the power supply control means 3
The heating heater 31 of 0 greatly generates heat, the bimetal plate is deformed by a predetermined amount, and the holding operation of the holding mechanism 11 is released. Then, the mounting lever 9 is raised by the spring force of the coil spring, and the slice pan jumps out of the heating chamber 8 to the outside. At this time, 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 energization of the heater energization detection circuit 23 is also stopped, so that there is no signal to the base of the digital transistor Q1 and the digital transistor is turned off. As a result, the capacitor C5 is discharged by the diode D3,
The digital transistor Q3 turns off and the diode D6
Is turned off, the current charged in the capacitor C6 is input to the base of the digital transistor Q2, the digital transistor Q2 is turned on, and a pulse is input to the input port SW1 of the audio LSI 24 by the resistors R5 and R6. When an input is made to the input port SW1 of the audio LSI 24, a notification sound or voice or the like for notifying that the roasting has ended is made to flow from the speaker.

This embodiment is characterized in that a speaker is provided on the other end opposite to one end of the main body case on which the operation lever for raising and lowering the pan is provided. That is,
In the heat shield plate constituting the heating chamber, the speaker is disposed on the second heat shield plate side where the guide hole through which the pan receiving bar passes is not provided, so that the second heat shield without the guide hole is provided. The plate allows the speaker to block the hot air from the heating chamber, so that the speaker is not exposed to the hot air leaking from the guide holes provided in the heat shield plate, and the speaker can be prevented from being thermally degraded.

Similarly, if a control board is provided on the second heat shield plate side, hot air leaking from the guide holes provided in the first heat shield plate does not have to touch the control board. The temperature rise of the electrical components mounted on the control board can be suppressed, and thermal deterioration can be avoided, leading to an improvement in the service life.

Further, by covering the speaker with a speaker box and separating the speaker box from the main body case, the hot air from the main body case can be effectively blocked, and the moisture generated by the roasting of the bread can be reduced. Touching or dew condensation inside is prevented, so that it is possible to further prevent deterioration of the speaker.

[0048]

According to the present invention, the speaker is placed away from one end of the main body case provided with the operation lever (heat shield plate formed with the guide hole) for the pan receiving / elevating operation. Therefore, the hot air in the heating chamber leaks out of the guide holes formed in the first heat shield plate, making it difficult to touch the sound generating means. Therefore, the life can be improved without the hot air in the heating chamber heating the loudspeaker and being thermally degraded.

Further, if the control board is provided on the second heat shield plate side, hot air leaking from the guide holes provided in the first heat shield plate does not need to touch the control board. Thus, the temperature rise of the electrical components mounted on the device can be suppressed, and thermal deterioration can be avoided, leading to an improvement in the service life.

Further, by covering the speaker with a speaker box and separating the speaker box from the main body case, the hot air from the main body case can be effectively blocked, and the moisture generated by the roasting of the bread can be reduced. Touching or dew condensation inside is prevented, so that it is possible to further prevent deterioration of the speaker.

[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 side sectional view showing the internal configuration of the toaster of the present invention.

FIG. 4 is an overall perspective view of the toaster of the present invention as viewed from the speaker box side.

FIG. 5 is a circuit diagram of the toaster of the present invention.

[Explanation of symbols]

 2 Body case 8 Heating room 9 Bread pan 10a Lever 16 Sound generation means

Continuation of the front page (72) Inventor Tatsuhisa Fukuda 1 Seiza-cho, Seika-cho, Soraku-cho, Kyoto Pref.

Claims (3)

[Claims] A pan receiver is disposed in a heating chamber covered by a main body case so as to be able to move up and down vertically, and a lever for raising and lowering the pan receiver is directed outward from one end of the heating chamber and the main body case. In a pop-up toaster mounted in a protruding state, a sounding means for notifying a roasting state of bread is provided on the other end of the main body case opposite to the one end. Pop-up toaster. 2. A pop-up type toaster having a slice pan insertion / removal opening on an upper surface of a main body case, a heating chamber disposed in the main body case and having a heater panel opposed to the heating chamber, and an up-and-down movement in the heating chamber. A pan receiver that is provided so as to be protruded outward from one end of the heating chamber and the main body case at one end side of the pan receiver, and is provided for raising and lowering the pan receiver. Lever and
It has sound generating means for notifying the state of the roasting of the bread, and control means for controlling the sound generating means, wherein the control means is configured such that, of the wall forming the heating chamber, the operation lever is Along with being disposed outside the wall portion not disposed, and at the other side end facing one side end of the main body case,
A pop-up type toaster comprising the sounding means. 3. The speaker according to claim 1, wherein the sound generator comprises a speaker and a speaker box for housing the speaker, and the speaker box is disposed apart from the main body case. Pop-up toaster.