JPS5814996B2 - Display correction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display correction device for, for example, an electronic digital watch.

In conventional electronic digital watches, most of the display corrections have been done using push buttons, such as pushing the counter one step forward by pressing it once, fast-forwarding the counter at a constant speed by holding down the button, or both. Some were combinations, others had a switch to change the fast-forward speed.

In the first example, for example, setting the minute digit requires pressing the pushbutton up to 59 times, which is cumbersome, and in the second example, for example, in the case of fast forwarding every second, it is necessary to press the push button for up to 59 seconds. You have to keep pressing the switch, and if you increase the feed speed, it will pass the predetermined time.

Furthermore, electronic buzzers and other devices with a time signal have a disadvantage in that they have complicated circuits for setting the guideline and changing modes for correcting the time display, making them difficult to operate.

The present invention operates a changeover switch by swinging a changeover plate, and operates a pulse generator by rotating a shaft, thereby providing a device with a simple structure and easy switching and correction operations.

An embodiment of the present invention will be described.

In FIG. 1, reference numeral 1 denotes a knob, which is fixed to the tip of the operating shaft 2.

A rotating body 3 made of an insulating material is fixed to the shaft 2.

A plurality of electrodes 4 . . . and a continuous lead-out electrode 5 are formed on the outer periphery of the rotating body 3 .

Contact pieces 6 and 7 can be moved into and out of contact with the electrodes 4 and 5, respectively.

That is, the contact piece 6 comes into elastic contact with the electrode 4, and the terminal P
, is grounded via a resistor, and the contact piece 7 is in elastic contact with the extraction electrode 5, and is connected to a power source via a terminal P2, forming a pulse generation switch Sw1.

The shaft 2 is rotatably supported by support plates 9a and 9b that stand on the switching plate 8.

The switching plate 8 is swingable about a shaft 10 that stands upright in a direction perpendicular to the axial direction of the operating shaft 2, and has a switching piece 8a that projects.

Changeover switches Sw2 and 8w3 are arranged on both sides of the changeover piece 8a.

The contact pieces 11 of the change-over switch Sw2 and the switch S town 3 are connected to the power source via the terminal P3, and the contact pieces 12 and 13 opposite thereto are grounded via resistors from the terminals P4 and P5.

The shaft 2 passes through a guide groove 15 of a guide plate 14.

As shown in the second figure, the guide groove 15 includes holes 15a, 15b, and 15c that loosely fit around the shaft 2, and a passage hole 15d that connects the holes and allows the shaft 2 to pass through tightly.

FIG. 3 is an electrical circuit diagram of an example in which the present device is used in a watch, in which 16 is a crystal oscillator, 17 is a frequency divider, and 18 is a counter circuit for counting minutes and hours.

19 is a display device.

20 is a switching circuit, and one output 20a opens the gate of the alarm circuit 21, and the output 20b opens the gate of the counting circuit 18, and the output 20c opens the gate of the counting circuit 18.
Reset by.

22 is an alarm display device.

Reference numeral 23 denotes a matching circuit, which produces an output when the contents of the alarm circuit 21 and the contents of the counting circuit 18 match.

24 is an alarm output circuit such as a buzzer.

The outputs of the switches Swl, 8w2 and 8w3 are input to the switching circuit 20.

Next, the operation will be explained.

First, in the normal timekeeping state, the knob 1 is positioned in the hole 15a as shown in the first and second figures, and the switching piece 8a is moved to the switching switch 3w2. Place S Town 3 in a neutral position where none of them are activated.

For this reason, as shown in FIG. 3, no output is produced from the switching circuit, the gate of the counting circuit 18 is not opened and reset, and the gate of the alarm circuit 21 is also not opened.

Therefore, the output of the crystal oscillator 16 is supplied from the frequency divider 17 to the counting circuit 18 to measure the current time, and the display device 19
Displayed by

Next, when correcting the display, move knob 1 upward.

The shaft 2 passes through the passage hole 15d and reaches the hole 15b.

In this state, the switching piece 8a moves downward, pushes down the contact piece 11, contacts the contact piece 13, and closes the changeover switch Sw3.

Therefore, the outputs 20b and 20c of the switching circuit 20 have the logical value "
1" and is reset at the same time as the gate of the counting circuit 18 is opened.

Then, when the knob 1 is rotated, the tip of the contact piece 6 will be connected to the electrode 4.
. . . and the terminals PlJP2 in FIG. 3 are brought into contact and separated.

That is, the pulse generation switch Sw1 is activated.

As a result of this contact and separation, a pulse is generated at the terminal P1 and is supplied to the counting circuit 18.

In this way, the counting circuit 18 is connected to the terminal P1. It is fast-forwarded by the number of times of contact and separation between P2, and its contents are corrected.

Next, when setting the guideline, move knob 1 downward.

The shaft 2 passes through the passage 15d and reaches the hole 15c.

In this state, the switching piece 18a moves upward, pushes up the contact piece 11 and contacts the contact piece 12, and closes the changeover switch Sw2.

Therefore, the output 20a of the switching circuit 20 is held at a logical value of 1'', and the gate of the alarm circuit 21 is opened.

When the knob 1 is then rotated, the pulse generation switch Swl is activated in the same manner as described above, and a pulse is generated at the terminal P1 and supplied to the alarm circuit 21.

For this purpose, the display on the alarm display device 22 is changed, and at the same time, the coincidence circuit 23 is set to this standard time.

Therefore, in the above-described time counting operation, when the contents of the counting circuit 18 match the reference time set in the matching circuit 23,
An output is generated in the matching circuit, and the alarm output circuit 24 operates a buzzer or the like.

As described above, according to the present invention, the changeover switch is actuated by the swinging of the changeover plate, and the pulse generator is actuated by the rotation of the operation shaft, so the configuration is simple, the operation is easy, and the circuit can be configured easily.

Furthermore, by performing mode switching and time adjustment through one operating axis, there is an advantage that the operation becomes even easier.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway front view of the main part, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is an electric circuit diagram. . 2... Operating axis, 3... Rotating body, 4, 5
...Electrode, 6.7...Touch piece, 8...
...Switching plate, 10...Shaft, 14...
Swing regulation guide plate, Swl...pulse generation switch, 8w2, 8w3... changeover switch.

Claims (1)

[Scope of Claims] 1. A pulse generator that generates a pulse signal as the operating shaft rotates, a switching plate that rotatably supports the operating shaft, and a switch plate that stands in a direction perpendicular to the axial direction of the operating shaft. A display correction device comprising: a shaft that swingably supports the switching plate; and a changeover switch that is switched by the swinging of the switching plate. 2. A pulse generator that generates a pulse signal as the operating shaft rotates, a switching plate rotatably bearing the operating shaft, and a switching plate that is vertically installed in a direction perpendicular to the axial direction of the operating shaft. A display correction device comprising: a shaft that swingably supports a plate; a changeover switch that is switched by swinging of the switching plate; and a swing angle regulation guide plate into which the operating shaft is fitted.