JPS6239574Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides an electronic timer that allows time setting to be performed easily and quickly.

Hereinafter, embodiments of the present invention will be described together with conventional examples.

FIG. 1 shows a diagram in which the electronic timer of the present invention is applied to a microwave oven. In the figure, 1 is an electronic timer section, 2 is a door, and 3 is a microwave oven body. A conventional example of the electronic timer section used here is shown in FIG. In the figure, 11 is a display that digitally displays the time, and 12 is a push switch that allows you to set the time in accordance with the digits on the display.If you keep pressing the switch, the time in the digit corresponding to the push switch will automatically increase (count up). do. 13 is an output selection section for setting the strength of the high frequency output of the microwave oven, and 14 is a start key for starting cooking. Reference numeral 15 is a cancel key for stopping cooking or canceling the set time.

FIG. 3 shows an embodiment of the electronic timer according to the present invention. 11 is a display unit that digitally displays the time;
22 and 23 have two connection states depending on how hard you press them, and by holding down the switch when setting the time, the set time will count up, and you can select the time digit to set depending on how hard you press it. It's a push switch. In other words, if you hold down the switch 22 firmly, the 10 second digit will automatically count up, and if you hold down the switch 22, the 1 second digit will automatically count up. Similarly, if you hold down the switch 23 firmly, the 10 minute digit will automatically count up, and if you hold down the switch lightly, the 1 minute digit will automatically count up.
Reference numeral 13 designates an output selection section for setting the strength of the high frequency output of the microwave oven, 14 a start key for starting cooking, and 15 a cancel key for stopping cooking or canceling a set time. That is, compared to the conventional example shown in FIG. 2, in the embodiment of the present invention shown in FIG. 3, the digit to be set can be selected by changing the strength with which the switch is pressed. FIG. 4 is a sectional view showing the structure of a conventional push switch 12. 31 is a movable piece;
2 is a cover, and 33 and 34 are metal contact terminals.
When 35 is pushed by the movable piece 31, it transforms from the state shown in FIG. 4A to the state shown in FIG.
Turn on the switch by touching both, and move the movable piece 3
It is an elastic contact piece and restoring spring that returns to its original shape and turns the switch off when it is no longer pressed by 1. That is, it is a switch that is turned on when the movable piece 31 is pressed and turned off when the movable piece is released. FIG. 5 shows an embodiment of a push switch used in the timer of the present invention. 31 is a movable piece, 32 is a cover, 33, 34a, 34b are metal contact terminals, and 35 is an elastic contact piece and restoring spring. That is, when the movable piece 31 is pushed slightly, the spring 35 is pushed down and comes into contact with the contact terminals 33 and 34a, resulting in the state shown in FIG. 5B. When the movable piece 31 is pressed even more forcefully, the spring 35 is deformed and comes into contact with the contact terminals 33, 34a, 34b, resulting in the state shown in FIG. 5C. Then, when you reduce the force with which you push, the spring returns to its original state and changes from C to B, and when you release it further, it returns from B to A. In this way, depending on the strength of the push, it is possible to maintain two states: the connected state (B) and the connected state (C).

FIG. 6 is a circuit diagram of a microwave oven using the electronic timer of the present invention. 41 has a timer function, determines each key input 42, and displays the display unit 4.
This is a microcomputer that outputs a display signal to the microwave oven 3 and further outputs a signal to the drive units 44 and 45 to control the output of the microwave oven. The drive unit 45 turns the microwave oven on and off.
4 controls the strength of the output of the microwave oven.

That is, the microwave oven is controlled by determining the input from the key input unit. 46 is a commercial frequency of 50 Hz or 60 Hz used as a reference time.

Hereinafter, the differences between the electronic timer of the present invention and the conventional electronic timer will be explained with reference to FIGS. 7 and 8.
Figure 7 shows a conventional example, and if you want to set the time to 23 minutes, keep pressing the 10 minute digit key as shown in Figure 7 A. The 10 minute digit will automatically count up and when it reaches 2. Release your fingers. Next, as shown in FIG. 7B, if you keep pressing the 1-minute digit key, the 1-minute digit will automatically count up, and when it reaches 3, release your finger to complete the setting. With the electronic timer of the invention shown in Figure 8.
When setting the time to 23 minutes, as shown in Figure 8 A.
If you press and hold the 10 minute and 1 minute digit keys, the 10 minute digit will automatically count up to 2. At this time, if you weaken the pressure on the switch and continue pressing the 10 minute and 1 minute digit keys weakly, the 1 minute digit will be automatically selected, and when this digit counts up and reaches 3, release your finger from the switch. good.

As described above, in the electronic timer of the present invention, two digits can be set with one key, there is no need to press the key again, the number of keys is small, and the cost can be reduced accordingly.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a microwave oven using an electronic timer according to an embodiment of the present invention, Fig. 2 is a perspective view of a conventional electronic timer, Fig. 3 is a perspective view of an electronic timer of the present invention, and Fig. 4 is a perspective view of a microwave oven using an electronic timer according to an embodiment of the present invention. Fig. 5 is a structural diagram of a push switch used in a conventional electronic timer, Fig. 5 is a structural diagram of a push switch used in an electronic timer of the present invention, and Fig. 6 is an example in which the electronic timer of the present invention is used to control a microwave oven. Schematic diagram shown,
FIG. 7 is a diagram showing an operation example of time setting of a conventional electronic timer, and FIG. 8 is a diagram showing an operation example of time setting of the electronic timer of the present invention. DESCRIPTION OF SYMBOLS 1...Electronic timer part, 2...Microwave oven door, 3...Microwave oven, 11...Digital display part, 12...Push switch, 13...Output selection part, 22, 23...Push switch, 31...
...Movable pieces of the switch, 33, 34a, 34b...
Contact terminal, 35...Elastic contact piece and restoring spring.

Claims (1)

[Scope of utility model registration request] A timer equipped with a display section that digitally displays the set time and a push switch that has two connection states by changing the strength with which it is pressed,
The electronic timer has a function in which the push switch automatically increases the set value by continuously pressing the switch when setting the time, and the digit on the display section to be set can be selected by changing the force with which the switch is pressed.