JPS58102185A - Electronic time piece - Google Patents

Abstract

PURPOSE:To provide piezo-electric element on an electronic time piece with a simple construction by electrically connecting transparent electrodes arranged on the top and the undersurface of a plate-shaped transparent piezo-electric element to an electronic circuit inside a case with a conductive member. CONSTITUTION:A plate-shaped transparent piezo-electric element 4 is fitted into a front side opening 2 of a case 1 through a packing 5 to protect a display 3 housed therein and plays a role of a glass. A pair of transparent electrodes 7 and 8 are formed opposite to each other on the top and the undersurface of the element 4. The transparent electrodes 7 and 8 are electrically connected to a circuit board 14 carrying LSI components 13 at both ends of the undersurface of the element through coil springs 11 and 12 made of a conductor. A display 3, the circuit substrate 14 and the like are fixed integral on a resin housing 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic hour hand equipped with a piezoelectric element used for generating alarm signals, etc. Conventionally, electronic watches with an alarm function vibrate at five o'clock and emit an alarm sound. The piezoelectric element is equipped with a piezoelectric element that generates electricity, and this piezoelectric element is attached to the display protective glass, back cover, etc. However, the work of attaching one piezoelectric element to the display protective glass, back cover, etc. At the same time, the structure of the entire watch was complicated and had a large lid.

This invention was made in consideration of the above-mentioned points, and the purpose of the invention is to provide an electronic timepiece that can be small and lightweight, and that can have a piezoelectric element in the electronic hour hand with a simple configuration. To provide this invention, the present invention will be specifically described below based on an embodiment shown in the drawings. FIG. 1 shows a schematic diagram of an electronic wristwatch to which the present invention is applied, and a front opening 2 of a watch case 1 is provided with a board so as to accommodate a display device 3 placed inside the watch case 1. A shaped transparent piezoelectric element 4 is attached via a gasket S, and this plays the role of a watch glass.

A pair of transparent electrodes 7.8 are arranged facing each other on the upper and lower surfaces of the piezoelectric element 4.One end of the transparent electrode 1 attached to the upper surface of the piezoelectric element 4 is A transparent insulating member 9 extends downward from the side surface of the piezoelectric element 4 and extends from the top edge of the piezoelectric element 4 to the side, and is formed on the bottom peripheral edge of the piezoelectric element 4. The piezoelectric element 4 is formed on the lower surface of the piezoelectric element 4 through one side of a printed insulator made of an insulator. The overlapping transparent electrode 8 is similarly printed layer 1
0 on the other side. Note that the printed layer 1G is used as a dial plate or a parting plate, and covers the periphery of the display device 30.

At both ends of the lower surface of the piezoelectric element 4, transparent electrodes 7
．． 8 is a coil spring 11.11 made of a conductor, and L81 part 13 is @l! It is electrically connected to the one-way board 14. Note that the display device 3, enclosure board 14, etc. are integrally fixed to a board made by III Co., Ltd.

Next, we will explain the enclosure configuration of an electronic wristwatch that is configured like the Kiichikaku. Figure 2 is the 1st circuit of an electronic wristwatch.
This electronic wristwatch emits an oscillator that outputs the reference deviation amount! 1 circuit (OIIC) 1@, a frequency division circuit (DIV) 17 that divides the reference deviation amount into a bias amount of a predetermined frequency;
At least hours and minutes by counting the above-mentioned amount of time.
A timer 18 for obtaining information, and an alarm time memory circuit 1- for setting the Shinshino T team time are also provided.

On the outside of the clock, there are various types! 8&al switch S
, ~84 are provided. This switch 81°14B
* 84 is for modifying the contents of the clock counter 18,
The switch used for the winding ring that sets the time memory circuit 19 to open at the time of the alarm is set to the island-1 trap 8-hata, which can be used to display the entire time, the time jump display, and the water depth display mode (when the ill is on standby). This is a switch used in a winding to switch between each mode (operation mode for indicating the position of the wing).

The operating deviation amount of each of the switches 81 to 84 is given to the switch control@20, which performs control operations according to the operating switch. ．．
IIJII! At the same time as selecting the position jl and specifying the selection leopard, switch 8. Depending on the operation, the flash code is set and the flash code is released. Accordingly, the time counter l$ is set in the preset mode W&:@, and the switch control @20 selects the digit to be corrected by outputting the digit selection value by operating the switch 81. Then, by incrementing the contents of the digit operated by switch 880 by +1, the time is corrected to the time counter 1$. Similarly J
If the alarm clock ain path 1- is set to the preset sound mode, the switch control 11t20 will cause the alarm clock ain path 1-to be set to the preset alarm mode by operating the switch 11. Please configure the settings. Also, switch control *20 is switch 8. It outputs a three-level switching compensation amount a according to the switching position of the switch, and also outputs a command designation signal amount corresponding to each switching position of the switch.

On the other hand, the clock signal #11tP and the output time signal and the alarm clock signal 1 which is also output from the alarm clock signal feed circuit 19 are given to the matching clock signal 1, respectively. This coincidence circuit 21 detects the coincidence of the two inputted times, and when it detects a coincidence, it outputs a pulse signal of the same order and outputs a pulse signal of 100 degrees! is given as an operation designation signal. In this buzzer drive circuit 22, the alarm, tone length, and stock pressure information of each device constituting a predetermined Qin are stored in advance in a digital format, and the predetermined frequency frequency output from the frequency divider 411617 is stored in advance. In accordance with C, a puzu 1 driving force amount (Qin Zhiyu number) 110 is created and outputted, and is given to the shoken selection circuit layer 3. This feature selection - path! 3 is provided with a piezoelectric element 4, and a switch control unit is also provided with a replacement number a. And function selection - road! 3 selects whether the piezoelectric element 4 is to function as a piezoelectric puller or as a pressure sensor, and the piezoelectric element 4 is to function as a pressure sensor according to the function 1! Hiro, piezoelectric element 4 on the winding metal
When an external pressure is applied to the piezoelectric element 4, the strain voltage generated in the piezoelectric element 4 is output, and the voltage is detected. Give to 4.

This voltage detection principle 4 is to detect the magnitude of the above-mentioned strain voltage and generate and output a water depth report corresponding to the amount of water.

We met, the time report from the timer #1, the 5 o'clock fog report from the alarm masts, the voltage detection-road!
The four signals are respectively applied to the display control circuit 8s into which the mode designation Ib is input. This display control path 2s is clocked in response to the peak mode designation signal #1.
8. The contents of the athame time record path 19 and the voltage detection path 24 are selectively outputted and applied to the display device 3, so that the display device 3 can be switched and displayed.

Next, function selection path: 3, the power of the voltage detection circuit 24 will be explained with reference to No. 311. First, *function selection circuit! The configuration of No. 3 will be explained. Function selection circuit! 3 is directly input to the Nantes gate 26, and input to the Nantes gate 27 is directly to the inverter 2s.
are given respectively through. Each of these Nantes gates 26.
27 is also given 1 kankaeho quantity. And Nantes Gate! The output signal of 6 is applied to the X terminal of the transparent electrode 7 provided on one screen of the piezoelectric element 4, and the output signal of 7 is applied to the X terminal of the transparent electrode 7 provided on one screen of the piezoelectric element 4. -The voltage is applied to the (2) terminal of the transparent electrode ($) provided at the bottom of the piezoelectric element 40 via N1 (referred to as a switch). A power switch N is provided between this Y terminal and the function selection path zs#)#B power switch. The power switch N,,4 N.

The switching operation is controlled in accordance with the switch signal a, and the switching signal island is applied to the gate electrode of the power switch N1, and is also applied to the gauge electrode of the power switch island via the inverter 89. Next, the configuration of the voltage detection circuit 114 will be explained. This voltage detection circuit: 4 has the output voltage (-m
A safety switch 30 that stably outputs V) is provided.

At the opening between this stabilizing path 860 force side and the date level, resistances R1 to R1 with a resistance value of 10 or more are connected in a frozen line. Each of these resistance vanes, ~R1, is stabilized w
The output voltage of the line 30 is divided by resistance into 10 steps corresponding to 1 to 10 atm, and each terminal voltage is set to v+ to Vu 0.3.
Vs-0, @V==LγV, -BV&: Corresponding. Each of these terminal voltages V, -wV, . . . is given as a comparison voltage to the corresponding one-amperay #01 to C1, respectively. These number comparators C1~
For C3, select function 1IjII! The strain voltage output from 3 is leaked in each winter. The winter converter S regulators C3 to C1 compare the magnitude of the input comparison voltage and the distortion voltage, and output a signal with a logic value of "11" to the platform where the distortion voltage is equal to or greater than the comparison voltage. In addition, a signal with a guess value "Oa" is output to the small platform. Then, among each comparator C1 to C2, compare #C1 to C
The output signal of S is given to the corresponding exclusive or gate (machi~machi), and the output signal of C1, blind and other comparators, is given to the exclusive or gate n, respectively. n, corresponds to] comparator C,
-wc- The output signal of the comparator C (=C*) on the left scale of the figure is also given. It has a logical value of "0" and is associated with a water level value of 10 to 90.

The output of each exclusive OR gate is sent to the decoder 31 as 9-pitch F parallel data.

This decoder 31 decodes the above 9-bit parallel data, and the exclusive or gate town~n whose content is "0",
Water depth information of X0 to 90m is output correspondingly.

In this platform and this embodiment, the relationships among water pressure, strain voltage, and water depth are set as follows.

Water pressure Strain voltage Water depth The display device 3 is constructed as shown in FIG. 4 (&). That is, the display device 3 is constituted by an electro-optical display device such as a housing crystal display device, and has a four-digit day-shaped display that digitally displays numerical information such as the time, as well as a display that specifies the morning. A PM display for specifying the afternoon, a PM display for specifying the alarm time display, a IM display for specifying the alarm time display mode, and a DIVI)rG display for specifying the water depth display mode.

Next, the operation of the above embodiment will be explained with reference to the display state diagram in FIG. 4(b) and the time chart F in FIG. 5.

Normally, the display device 3 displays the contents of the clock call #1s, that is,
The time of day, for example, as shown in No. 411 (k) (“81 no.
"2:48" is displayed. In this case, if you make 11111 switches for 8 dollars, 1
The contents of the item record circuit 19 are displayed in the display control 1111! I is also sent out, and the display device 25 displays the alarm time, for example, "010 a.m." as shown in the fourth section 00.

When the switch B4 is operated in the remote time display mode or alarm time display mode, the time counter 11 or alarm memory am19 is set to the pre-time mode (see $411(b)). IM). In this state, by operating the switch 11 e l@,
It becomes possible to correct the internal setting of the clock meeting #1-, and it becomes possible to set an alarm time in the alarm storage circuit 19. And switch! When you operate 14 again, the original reward code and alert AIIN are displayed! - Return to W (4th WJ (
)) When the switch Ba is operated in the alarm display mode, the mode is switched to the water depth display mode, and the piezoelectric element 4 comes to function as a pressure sensor. That is, when the switch 8- is switched to the water depth display mode, the switch control unit 80
[As shown in (&), the level switching signal a is output. Therefore, when the function selection a is pressed 1s,
Puff World Ituna N, 011% Puff Switch is ON
And then, t-do gate! ! The output of - is a logical value''
It becomes 11. *The ground level is applied to the X terminal of the piezoelectric element 4.

- When diving, water pressure is applied to the piezoelectric element 4, and a strain voltage corresponding to the water pressure is generated at the piezoelectric element 40Y terminal.・This strain voltage is
The output is sent to the voltage detection terminal 4 through the voltage detection terminal 4, and is sent to the voltage detection terminal 4 corresponding to the strain voltage.The output of each comparator C1 to C,... Logic value ``1'' 1 distortion voltage vs. comparison voltage Logic value ``1''
・For example, if the strain voltage is at the 16th point, the outputs of the comparators C1 to Cs will be "1".
, and other ] comparators C4 to C11 become "bones" ◎For this reason, among each exclusive or gate town ~-, only the output of or gate town becomes "0", and the outputs of other or gates become "1". Therefore, Dezuda 31
outputs the water depth information corresponding to the output rOJ of exclusive contract Orgate town, so the display device 3 displays the water depth r30 mJ as shown in No. 411 (1). In this way, the piezoelectric element 4 can be used as a pressure sensor by switching the switch S1 to the water depth display mode. In this case, it is the alarm time and the buzzer drive deviation amount 1D of the predetermined frequency is determined by the function selection circuit 23 as shown on the left side of Fig. 1S (II).
Even if given to
! Since it is a storage, the non-functional shrine 2s retains the function of the piezoelectric element 1 as a pressure sensor.

Next, switch 8. When is operated once, as shown in $41i(1+), the state returns to the m*indication mode and the piezoelectric element 4 comes to function as a buzzer. That is, the switch control 1120 switches to switch B.
When m is switched to the normal time display mode, the sE(&
) as shown in (Heilepel's switching signal att#!1 is input. This causes the function interpreter m path! 3 smell 11 pa! F -
214'l f ) % HaOM s "Merswitch N
s is turned OFF, and the output signal of the corresponding number V game) 36.21 is applied to the X terminal of the piezoelectric element 4, and the alarm time is reached.
Buzzer drive deviation amount IDtI shown in I (Ill)
When it is accepted by Ipeng 3, the x#1 terminal of the piezoelectric element 6 is added with the thin line shown in the rattan l1l (・). The ith @
As shown in (t), the piezoelectric element 4 vibrates according to the pull drive system and generates a predetermined amount of energy e** since the letters liI and *@ are attached.

Therefore, the piezoelectric element 4 comes to function as a piezoelectric pulse when the alarm time comes in the normal time display mode.

As mentioned above, since the transparent piezoelectric element 4 is attached to the bottom part of the watch case and worn to protect the display part, there is no need to provide a protective screen, and the piezoelectric element 4 can be used as a pressure sensor or a piezoelectric buzzer, which is completely optional.Therefore, there is no need to provide two piezoelectric elements corresponding to the alarm function and the water pressure II & output function, and one piezoelectric element can perform both functions. They meet by forming functions. Therefore, it is possible to create an electronic watch with an alarm function and a water pressure detection function with a simple configuration.In addition, in the above embodiment, the conductivity between the transparent electrodes 7 and 8 on the piezoelectric element 4 and the circuit board 14& This was done using Coil Sprip > Da 11.1, but Il! For example, conductive rubber, 7-leaf kv-shi, etc. may be used. In addition, in the above-mentioned example, a printing layer 1 or 1 was formed on the back of the piezoelectric element 4, but a dial plate may be provided instead of this printing layer 10.
4. In the above embodiment, the *depth was displayed in units of 10, but it may also be displayed in units of 111.Furthermore, instead of displaying by the water layer, it can be expressed by a water pressure type or pressure such as 4101. The display may be performed by , or this unit switching may be performed by operating a switch.

In addition, in the above embodiment, the function of the piezoelectric element 4 is selected by operating the switch 8.0, but for example, it is possible to determine whether the alarm time is set or not, that is, when the alarm time comes, the athame will be in a duck state. The function of the piezoelectric element may be automatically selected depending on whether the piezoelectric element is present or not.As is clear from the above description, the present invention provides a method in which the display protective glass is layered with a transparent piezoelectric element. Because of this structure, even in electronic watches using piezoelectric elements, there is no need to install a piezoelectric element as a separate component (the number of parts is reduced, leakage is prevented, and weight can be reduced, which is extremely advantageous in terms of cost. This has excellent practical effects.

11 [Simple explanation of i H! li shows one embodiment of this invention, and the first
g is a schematic diagram of the electronic wristwatch, IIH% is its boot switch circuit diagram, 3rd WJ is a diagram showing details of the function selection circuit and voltage detection circuit, 4th cabinet (-) is a configuration diagram of the display device, 11
41f (Th) is the original drawing of the label - 1st cabinet (&) ~ (1L
) is a table showing the time charts of various signals.
.

1...Watch case, G...Front opening,
G... Display device, 6... Piezoelectric element, 7.
8...Transparent electrode, 11.12...Coil spring, 14-...Circuit board.

Patent applicant: Power wt calculator Co., Ltd.

Claims (1)

[Claims] A plate-shaped transparent piezoelectric element is attached to the entire picture opening of the hour hand case, and Wk1 is arranged on the upper and lower surfaces of this transparent piezoelectric element!
1. An electronic timepiece characterized by comprising: a transparent electrode made of a transparent electrode; and a conductive member that electrically reads the transparent electrode and an electronic path inside the hour hand case.