JPS6238312Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an output switching device for an electric cooking device such as a toaster oven.

In conventional toaster ovens, the heat is set to high when first used, and when it is necessary to switch to low heat for cooking, these operations are performed manually.

This invention allows the above-mentioned operation to be carried out automatically, with the selection switch being able to switch between high heat and low heat, or automatically switching from high heat to low heat.

The configuration of this invention can be explained using the diagram as follows:
and 2 are an upper heater and a lower heater for roasting that are installed in the roasting chamber of the oven, and these are connected in parallel to the power source E, and the parallel circuit includes a parallel circuit of a high heat circuit 3 and a low heat circuit 4. are connected in series.

The high flame circuit 3 has a changeover switch 5 which is opened and closed by the operation of a timer (not shown), and the changeover switch 5 is connected to a high flame contact 6 and a low flame contact 7, either of these contacts. Movable contact piece 8
When the movable contact piece 8 comes into contact with the high flame contact 6 side, the high flame circuit 3 and the parallel circuit of the upper and lower heaters 1 and 2 are connected in series. Further, by the movable contact piece 8 coming into contact with the other low heat contact 7, the low heat circuit 4 and the parallel circuit of the upper and lower heaters 1 and 2 are connected in series. Therefore, the low heat circuit 4 is turned on manually with the diode 9.
It is constituted by a circuit in which a selection switch 10 that can be set to -OFF and a timer switch 11 that is opened when the timer operation ends are connected in series.

Reference numeral 12 is a timer cam, which is rotated by a shaft 13. The cam 12 is a double series of an upper cam 12' and a lower cam 12'', and the upper cam 12' is provided with a notch 14, and the lower cam 12'' is provided with a notch 14'. A notch 14' is located at the end. What is operated by the upper cam 12' is the operating piece 1 of the changeover switch 5 shown in FIG.
5. Also actuated by the lower cam 12'' is the operating piece 16 of the timer switch 11.

To explain the effect of this device using diagrams, the first
In FIG. 2, when the selection switch 10 is OFF, the heater is on high heat. When the timer is set and then started, the operating piece 15 of the changeover switch 5 is pressed by the upper cam 12', the actuation piece 15 is retracted, and the movable contact piece 8 of the changeover switch 5 is brought into contact with the high flame contact 6. It's in there. Therefore, it is a strong fire.

When the timer rotates and the required time has elapsed, the actuating piece 15 reaches the notch 14, the actuating piece 15 protrudes, and the movable contact piece 8 of the changeover switch 5 conversely enters the low heat contact 7, but the selection switch of this circuit 10 is off, power is not applied to heaters 1 and 2, and high-heat cooking is completed.

In FIGS. 3 and 4, the selection switch 1
When 0 is ON, it is an automatic switching case, and the heater is first set to high heat and then automatically turns to low heat.

When the timer is set and then started, the operating piece 15 of the changeover switch 5 is turned on by the cam 12', and the movable contact piece 8 of the changeover switch 5 enters the high flame contact 6. Therefore, it is a strong fire. When the timer rotates and the required time elapses, the operating piece 15 comes to the notch 14, so the movable contact piece 8 of the changeover switch 5 enters the low heat contact 7. At this time, the operating piece 16 of the timer switch 11
is turned on by the lower cam 12'' of the cam 12, and the selection switch 10 is also turned on, so the diode 9 is energized, and the amount of heat generated by the heaters 1 and 2 is reduced by the action of the diode 9. The flame decreases and works as a low flame.Furthermore, the timer operates and the lower cam 1
When the operating piece 16 of the timer switch 11 enters the 2'' notch 14', the timer switch 11 turns OFF.
Then, this circuit is cut off and the cooking course, which automatically switches between high heat and then low heat, ends.

In addition, in the case of low heat, that is, when the movable contact piece 8 of the changeover switch 5 is in the low heat contact 7 as shown in Fig. 3, and the timer switch 11 is in the ON state, the timer is set for the required time. Then, the actuating piece 16 is inserted into the notch 14' of the lower cam 12''.
You can cook only on low heat until the temperature rises.

Although the cam is fixed in this example,
By dividing the upper cam 12' and the lower cam 12'' and setting timers for these cams separately, it is possible to arbitrarily set the time for high heat and low heat in the case of automatic switching from high heat to low heat. .

As mentioned above, this idea connects parallel circuits of a high heat circuit and a low heat circuit in series to the upper and lower heaters for roasting, and selectively connects power to the high heat circuit and the low heat circuit using a switch. A diode, a selection switch, and a timer switch are each connected in series to the low heat circuit, and the selector switch is operated by the timer for driving the timer switch, so that cooking can be performed using only high heat or low heat. Even when cooking from high heat to low heat,
This is possible by switching the switch and setting the timer, and since the switching is linked to the timer, the high heat time can be freely selected depending on the type of cooking, making it possible to expand the repertoire of dishes. This is a useful idea.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram for high heat, Figure 2 is a circuit diagram for when electricity is OFF in the case of Figure 1, and Figure 3 is a circuit diagram when the selection switch is ON. Figure 4 is the circuit diagram when the power is turned off in the case of Figure 3, Figure 5 is a perspective view of the cam for switching the switch installed in the timer, Figure 6 is the circuit diagram when the cam is turned off. FIG. 3 is an external perspective view of a correspondingly provided switch. 1... Upper heater, 2... Lower heater, 3...
High heat circuit, 4... Low heat circuit, 5... Selector switch, 9... Diode, 10... Selection switch,
11...Timer switch.

Claims (1)

[Scope of utility model registration request] A parallel circuit of a high heat circuit and a low heat circuit is connected in series to the roasting heater, and the high heat circuit and the low heat circuit are selectively connected to a power source by a changeover switch, and the low heat circuit is equipped with a diode and a selection switch. and a timer switch are connected in series,
An output switching device for an electric heating cooker, wherein the switching switch is operated by a timer for driving the timer switch.