JPS6067879A - Hand motion accelerating system of hand type electronic timepiece - Google Patents

Abstract

PURPOSE:To attain to reduce an inspection time required in the discovery of hand motion inferiority to a large extent, by performing the moving operation of an external operation member two times or more within one sec to transfer the same to a high speed hand motion state. CONSTITUTION:The reference signal of an oscillation circuit is brought to predetermined frequency by the frequency dividing in a frequency dividing circuit 7 to obtain an accelerated signal 28 which is, in turn, converted to a two-sec signal by the frequency dividing in a frequency dividing circuit 8 while a pulse is outputted at every one sec by a D-type flip-flop 9 and gates 25, 26. At the time of usual clock hand motion, the accelerated signal is inhibited by an AND gate 20. When a switch 4 is turned ON and OFF two times or more within one sec, a pulse is generated in the output of an AND gate 17 two times or more while FF14 keeps a high level and a high speed hand motion state is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for accelerating the movement of hands in a pointer type electronic timepiece, which is controlled by the number of operations of all external operating members and the possession time.

An object of the present invention is to increase the speed of hand movement of a pointer-type electronic timepiece, and to significantly reduce the inspection time required to detect defects such as erroneous hand movement.

Another object of the present invention is to enable high-speed hand movement inspection of a pointer-type electronic timepiece in the completed product state, and to provide a foolproof design to prevent malfunctions during normal use of the timepiece.

Still another object of the present invention is to shorten the time required to adjust the time and to completely eliminate the problem of backlash in manual adjustments.

The hand movement acceleration method of conventional pointer type electronic watches can be broadly classified into type 2a. One is to provide a test terminal that can be contacted only in the movement state or circuit block state, and to shift to high-speed hand movement by setting the test terminal to the active level. Second, the hands are moved at high speed by operating an external operating member in the rotational direction. In the former case, the hand movement is accelerated in a so-called semi-finished product state such as a circuit block or movement, so it can only be applied to inspection of a partial or intermediate manufacturing process, and an external tool that contacts the test terminal is required. becomes. And in pointer-type electronic watches whose mission is to make them thinner and smaller, this poses a serious obstacle in designing the space for test terminals. Regarding the latter, various operating methods have been proposed, but all of them have the following common drawbacks because their sole purpose is fast forward correction (so-called electronic correction). First, because the high-speed hand movement state is set by the simplest possible external operation, there is an extremely high risk that the high-speed hand movement state may be mistakenly entered during normal use, causing the time to be incorrect. (For example, Ryu.

- operate the lens in the direction of rotation. )Secondly, the high-speed hand movement is maintained either within a preset range or only during manual operation, making long-term clock operation difficult. It must not be possible to use it for inspection. That is, in this case, it is possible to check all gear train failures unmanned. Thirdly, a large number of external operating members and position detection terminals are required. For example, it is a combination of a crown and a push-in switch, or a combination of an axial position detection terminal and a rotation detection terminal on the crown. This completely spoils the appearance of the watch, complicates the structure of the external operating member, and greatly reduces reliability.

The present invention eliminates the above-mentioned drawbacks and provides a complete acceleration system that can be applied to all pointer type electronic watches. Fig. 1 shows the appearance of the timepiece and the crown position of the present invention. In the figure, 1
i Watch Complete, 2.6 shows the first stable position and second stable position when the crown is moved in the axial direction.

As an example of a specific operation of the present invention, the crown in all positions 2
A case will be described below in which the hand movement is accelerated when the steps are performed in the order of →Position 3 →Position 2 →Position 3 within one second. Figure 2 shows the basic circuit of the present invention, and 6 shows the oscillation circuit?
and the reference signal full frequency divider circuit 7 selects a predetermined frequency (usually,
Although it is approximately 52H2, it is referred to as AH2 here to simplify the circuit description. ) to obtain the acceleration signal 28.

Further, this signal sound frequency dividing circuit 8 divides the frequency to a 2 second multiple, and the signal is passed through an OR gate 21 and an inverter 22 to a backward type flip-flop (hereinafter abbreviated as FF) 9 and a NAND game) 25
, '26 alternately outputs the full one-shot pulse every second. This pulse is a clock hand movement pulse during normal operation, and is converted into an electromechanical signal by the motor 27 to fully drive the rotor.

Here, the width of the hand movement pulse is determined by the clock signal 30vc from the frequency dividing circuit 7. (Normally 30 is 12 anz
) When the clock hands are moving normally, an acceleration signal is generated by AND game) 20? It is prohibited. In other words, the output of 'y'F14 is H.
Unless this happens, the high-speed hand movement state will not be entered. Hereinafter, it will be explained with reference to FIGS. 2 and 3 that the FF 14 becomes H due to the above-mentioned taleuse operation. FIG. 3 shows a timing chart of the circuit operation in FIG. 2, and the numbers in FIG. 3 correspond to circuit outputs with the same numbers in FIG. 2. In FIG. 2, switch 4 turns the crown off when the crown is in the 20 position shown in FIG. 1, and turns on when the crown is in the 3 position shown in FIG. Since the switch 4 is pulled down to the Vsg level (hereinafter abbreviated as below) by the resistor 5, when the crown is moved from all positions 2 to 3 to 245 in Fig. 1, the switch input changes from L-))T to L. Changes as →■. (High voltage rep/l/; indicates all VDD levels.) This signal is connected to FF15. A chattering prevention circuit consisting of FF1'9 is synchronized with the clock signal '30 and transmitted. 4', 50', 1 in Figure 3
5' are switch 4, clock 30. The output waveform of FF15 is shown. As is clear from Figure 3, KFF,
15, FF191"J is a negative going type D flip-flop, and all the FFs shown in FIG. This signal becomes the differential note as shown in 17'.
NOR game) 16. In order to set the SR latch consisting of 18, the AND gate 17 becomes H and at the same time
The OR gate 16 falls to L, and FF1D, FF'11, which had been reset and stopped counting until then. Start a timer consisting of FF12. Furthermore, FF13
When the reset of FFM3 is also released and the AND gate 17 falls to L, the output of FFM3 becomes '151 (F'
Indicate H number to the data input VDD of F13. ) If the switch is turned on and off twice or more within 1 second, the AN
Since pulses are generated at the output of the D gate 17 more than once,
Before FF13 is reset (-M: within 1 second after the first pulse is output), transfer H data to FF14, and
F 14rIXH' (5 retained.

This series of timing 'ii 17' and 16' in Figure 3
.

13′, shown in 1AI. Also, 31 in Figure 3
shows the entire ink-pulse of 1 second (actually there is an error of A seconds in K).

As is clear from Fig. 2, according to the above operating principle,
After entering the high speed (n A I (Z) hand movement state in the above explanation, the crown returns to the first stable position (i.e. switch 4 is off → FF 15 is L → inverter 24 is H-FF)
14, the LEAND gate 20 goes low), and the normal time hand movement state is restored. Also, although omitted from the explanation, it is clear from Fig. 2 that the high-speed hand operation does not occur even if the switching is performed for more than 1 second, and at that time, the count is performed as in a normal watch (the frequency dividing circuit 8 in Fig. 2). (reset by R).) It just comes to a full stop.

With the mechanism described above, when the hands are moved at high speed,
Various advantages can be considered in terms of watchmaking and use. A specific example will be explained below.

First, it reduces inspection man-hours and reliability evaluation time in watch manufacturing. For example, in the operation inspection that is normally carried out on a complete watch, at least the engagement time that is the least common multiple of the number of teeth in each gear train is required to confirm the full load on all gear trains, and the speed at which the rotor rotates every second is required. In fact, it would take an entire number of days, which is virtually impossible.

However, according to the present invention, if the rotation is performed at a high speed of, for example, 32H2, the time required is simply 1/32. Also, the operation
The crown cannot be operated by mistake while carrying the device, and if you dare to do it, it is a simple operation and does not require any skill on the part of the operator.

In addition, since switching is possible in any state of the crown, circuit block, movement, or complete watch, it can be used at any point in the manufacturing process from the beginning to completion.

For example, it is fully effective for evaluating IC performance, adjusting clock accuracy, and inspecting motor characteristics when a movement is in the state of a circuit block.

The second advantage is that there is no need for external operating members or detection terminals other than the J-use, which improves the efficiency of watch space, reduces parts costs, improves the appearance of the watch, and simplifies the operation specifications. This is a measurable point. In addition, the ability to reduce the number of parts will lead to improvements not only in terms of cost but also in terms of quality.

A fifth advantage and application is that it can be applied to all analog electronic watches. Not necessarily for analog electronic clocks,
What is the first stable position and second stable position of the crown? Mechanically, this is a necessary and sufficient condition for the present invention.
There is no need to modify the movement structure. In addition, since the circuit elements shown in Fig. 2 are sufficient, the cost of the amplifier is almost nothing.The fourth advantage of the present invention is that if the user is taught how to accelerate the time It can be used for correction.

For example, if you want to adjust the hands for 6 hours, you will need to manually adjust the crown to make at least 6 revolutions of the 1-minute hand, but since this invention automatically adjusts the hands, you only need to use the crown when starting and stopping. -4-i, Normally, the basics of hand setting is to stop the second hand on the spot and wait until the time comes, but if you use the present invention, you can accelerate the second hand and set it to the current time. We believe that it is possible to combine them.

[Brief explanation of the drawing]

Rin 1 is an external view of the watch of the present invention. 1... Watch complete 2... Crown first stable position 6... Crown first stable position FIG. 2 is a timepiece circuit diagram of the present invention. 4... Switch 5... Resistor 6... Oscillation circuit 7... Branch circuit 8... Branch circuit 9. 10, 11, 12, 13, 14, 15° 19...
DW flip-flop 1/, 1B...NOR gate 19.20...AND gate 21...OR gate 22.24...Inverter 25.26...NAND gate 27...Motor 28... -4Hz signal 30...'128Hz signal Fig. 3 is a timing chart. 4'... Switch signal 30'... 128Hz signal 15'... Output signal of flip-flop 15 17'.
...ANDNO gate output signal 16'...N'OR
Output signal 13' of gate 16...Flip-flop 1
Output signal 141 of 3...Output signal of flip-flop 14 Applicant Suwa Seikosha Co., Ltd. Agent Patent attorney Tsutomu Mogami

Claims (2)

[Claims] (1) A pointer-type display device and an external operating member having at least the first and second stable positions in the axial direction, and a time measurement state in which time is measured at a predetermined hand movement speed, and a time measurement state at a higher speed than the time measurement state. In an electronic watch having a high-speed hand movement state in which the hands are moved at a high speed, the movement operation of the external operating member between the first stable position and the second stable position is controlled by the number of times of the movement operation and the possession time. A hand movement acceleration method for a pointer-type electronic watch, which is characterized by the ability to move between different states. (2) When the external operating member is moved between the first stable position and the second stable position more than once, and the time required for the two or more movements is less than 1 second, the hand moves at high speed. An acceleration method for a pointer-type electronic timepiece as described in the first patent, which is characterized by the fact that