JPS6147392B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a multi-range timer that can switch digits in units of ¹⁰ⁿ and can set a time limit by switching the time unit such as hours and minutes or minutes and seconds. It is something.

Conventional range switching means for multi-range timers include cutting the jumper wire on the internal printed circuit board and replacing the dial, or switching the dip switch placed inside the device and replacing the dial. Some proposals have been made, such as one in which an internal switch is switched using a set key, or the like. However, in the case of such a conventional method in which the jumper wire is cut, there is a problem that the settings cannot be restored to their original state, and the workability is poor because the dial needs to be replaced, and the settings must be checked from the outside. If the device has a problem where it cannot be used, and it requires an internal deep switch,
This requires replacing the dial plate, making it difficult to work and making it impossible to check the settings from the outside.Furthermore, if a set key is used, there is a risk of losing the set cake, and the dial plate cannot be checked. There was a problem that the set time could not be read directly depending on the display.

The present invention has been provided in view of the above-mentioned points, and is capable of easily and repeatedly switching the range, allowing confirmation of the switching setting state from the outside, and furthermore, allowing time setting using a knob. It is an object of the present invention to provide a multi-range timer in which the display of the setting scale can be read directly and the time unit is accurately displayed to prevent erroneous settings.

An embodiment of the present invention will be described in detail below with reference to the drawings.
FIG. 1 shows an embodiment circuit of the present invention, in which a power supply circuit 1
1 to constant voltage circuit 12 and relay drive circuit 13
The timer IC 14 is operated by the power stabilized by the constant voltage circuit 12. Timer IC14 is oscillation circuit 1
5, Counting circuit 16 ₁ ...16 ₄ , Range switching circuit 1
7. Output circuit 18 and auto-reset circuit 19
The output of the oscillation circuit 15, whose oscillation frequency is varied by an external time change volume _RT , is counted by the counting circuits ₁₆₁ ... ₁₆₄ , which are reset by the auto-reset circuit 19 at the same time as the power is turned on. The time range is switched to 1x or 10x depending on whether the digit switch 2 is on or off, and the time range is further switched to 1x or 60x depending on whether the unit switch 24 is on or off. When it is detected that the count values of _the counting circuits 16 ₁ . Here, the range switching circuit 17 connects the output of the digit switching switch 2 that switches the time range to 1x or 10x, and the output of the digit switching switch 2 that switches the time range to 1x or 10x
Input the output of the unit changeover switch 24 that changes to 60 times, and depending on the combination of the outputs of these two changeover switches 2 and 24, 1 times (seconds), 10 times (10 seconds), 60 times (minutes), and It is possible to set the time for each range of 600 times (1 minute). Note that C in the diagram
_T is an external capacitor and VR is a polyurethane for internal fine adjustment.

FIG. 2 shows a plan view of the above-mentioned embodiment with the dial 6 removed from the upper part of the timer case 3, and a cross-sectional view thereof taken along the line A-A.
The circuit components shown in the circuit diagram shown in the figure are housed, and a time change volume R _T is fixedly installed in the center of the ceiling inside the timer case 3, and its shaft 20 is protruded from the top plate 3a. , this shaft 2
A knob 1 for time setting is attached to 0. In addition, a digit changeover switch 2 and a unit changeover switch 2 are located at the back and front sides of the upper part of the timer case 3, respectively.
4 are arranged, and these changeover switches 2, 24
The operating handles 7 and 26 are also slidably protruded upward from the through holes 21 and 29 in the top plate portion 3a of the timer case 3. A substantially U-shaped slide groove 4 is recessed in the upper surface of the top plate portion 3a, and a scale display plate 5 and a unit display plate 25 are arranged in the slide groove 4 so as to be movable individually in the front and rear directions. A dial plate 6 is provided on the upper surface of the top plate portion 3a so as to cover the scale display plate 5 and the unit display plate 25. Scale display board 5
As shown in the figure, two types of numerical scales 9 and 9' are provided in parallel in the sliding direction, and the operation handle 7 is provided to protrude through the scale display plate 5 through the fitting hole 22. By operating the operating handle 7, the scale display plate 5 also slides back and forth within the slide groove 4 in conjunction with the operation. Unit display board 2
5 is provided with a pair of unit displays 23, 23' in parallel in the sliding direction, and the operating handle 26 is protruded through the fitting hole 30 of this unit display plate 25. By operating the operation handle 26, the unit display board 2 is
5 is also configured to slide back and forth within the slide groove 4. The dial 6 includes a scale display window 10 along the circumference of the knob 1 and a unit display window 2 located in front of the knob 1.
8, and handle holes 8, 27 through which the operating handles 7, 26 protrude, and when the respective operating handles 7, 26 are switched within the handle holes 8, 27, the scale display plate 5 The unit display board 25 also slides up and down, and only one of the numerical scales 9 or 9' is displayed from the scale display windows 10..., and one of the unit displays 23 or 9' is displayed from the unit display window 28. Only 23' is displayed,
In the unit display 23 or 23', the numerical scales 9, 9 displayed from the scale display windows 10, . . . indicate hours, minutes, seconds, etc. (seconds in the illustration).

Since the present invention is configured as described above, the range switching state using the pair of operating handles can be visually recognized from the outside, making it easy to confirm the setting state of the range. Since the display board and unit display board slide respectively, and only one kind of numeric scale is displayed from the scale display window and only one unit display is displayed from the unit display window, it is difficult to change the range as in the conventional method. There is no need to go through the trouble of replacing the dial,
Furthermore, when setting the time using the knob, the display scale can be directly read and the unit can be visually confirmed, which has the effect of improving usability.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of an embodiment of the present invention, Fig. 2a is a plan view of the above timer case with the dial removed, Fig. 2b is a sectional view taken along line A-A of the above, and Fig. 3 is a reduced top view of the same as above, 1 is a knob, 2 is a digit changeover switch, 3 is a timer case, 4 is a slide groove,
5 is a scale display board, 6 is a dial board, 7 is an operating handle, 8 is a handle hole, 9 and 9' are numerical scales, respectively.
10 is a scale display window, 23 and 23' are unit displays, 2
4 is a unit changeover switch, 25 is a unit display board, 26
27 is a handle hole, and 28 is a unit display window.

Claims (1)

[Claims] 1 The set time can be adjusted using the time setting knob, and the set time scale can be changed in units of 10 ⁿ (n is a natural number) by operating the digit switch, and the set time scale can be changed by operating the unit switch. In a multi-range timer that allows the units to be changed as appropriate such as hours, minutes, and seconds, the scale display board and unit display board can be slid freely into slide grooves formed on the top surface of the timer case. A dial plate is fixed to the timer case so as to cover the upper part of these display plates, and a digit changeover switch and a unit changeover switch each consisting of a slide switch are installed inside the timer case, and operation handles for these changeover switches are provided. are protruded from the handle holes of the dial plate so as to be freely operable, and each of these operation handles is engaged with a corresponding display plate,
The scale display plate is provided with multiple kinds of numerical scales with different digits in parallel in the same direction of sliding, and the unit display board is provided with unit displays showing multiple types of time units such as hours, minutes, and seconds. , a scale display window around the knob display window in which one of the above numerical scales is displayed according to the switching position of the time setting digit with each operating handle, and A multi-range timer characterized in that a unit display window in which one of the unit displays is displayed is formed on a dial plate.