JP3266917B2 - Multifunction electronic clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog electronic wristwatch having multifunctional display means such as a stopwatch display and an alarm display.

[0002]

2. Description of the Related Art In recent years, multifunction electronic watches having additional functions such as a stopwatch, an alarm, and a timer have been commercialized as analog electronic watches. Means for displaying such multi-functions include, in addition to the usual seconds, minutes and hour hands, a special alarm hour / minute hand or minute chronograph at an arbitrary position on the dial, for example, at 6 o'clock or 9 o'clock. Various functions are displayed, for example, a pointer means such as a needle is provided.

[0003] In addition to the normal crown as an external operation member, the function operability of each function is improved by using multi-function display switching, a secondary crown or a switch. This not only provides many functions, but also enables various variations in watch design, responding to diversifying consumer needs.

Examples of disclosure of such a multifunction electronic timepiece are disclosed in Japanese Patent Application Laid-Open Nos. 61-28683 and 61-29438.
8, JP-A-2-77678, JP-A-2-77679, and the like.

[0005] Further, as another means for displaying multi-functions, ordinary seconds, minutes and hour hands are arranged at the center on the dial,
Separately, by changing the function displayed by the function display means arranged at the 6 o'clock position, each hand displays the function. In this case, when the function display is “time”, the long hand, the short hand, and the second hand indicate the minute hand, the hour hand, and the second hand, respectively. When the function display is changed to "stopwatch" by an external operation, the long hand, the short hand and the second hand display the minute hand, the second hand and the 1/10 second hand, respectively. In this way, the hands change the meaning of the display depending on the respective functions, and wristwatches which are like ordinary three-hand watches having no special function when they are usually carried have been commercialized.

[0006]

However, in the conventional multifunction electronic timepiece, whether the alarm is ringing or not is set according to the position where the winding stem is pulled out, so that instantaneous determination is impossible. there were. In addition, the chronograph second hand, which is read with a sub-hand placed at a position off the center of the timepiece, is difficult to read, especially in the case of measuring a short time in seconds or less. It was impossible. In addition, place the chronograph second hand at the center of the watch body,
Even when measuring less than a second unit such as 1/5 second measurement,
Due to the tooth backlash of the wheel train for driving and transmitting the second hand, there is a practical drawback that an instruction deviation from the scale is generated and the graduation cannot be read.

Further, in the case of a multifunction electronic timepiece in which a function is displayed and a hand suitable for the function changes the meaning of the display, the display meaning of the hand is confused in each case, resulting in a confusing expression. In other words, the hour hand at the time of a certain function becomes a minute hand at another function, and accordingly, even the scale to be read is changed and read, resulting in a very complicated and difficult to use clock.

In recent years, the switching operation and button operation of a multifunction electronic timepiece have become complicated. Therefore, the present invention is intended to eliminate such disadvantages, and an object of the present invention is to provide a multifunctional electronic timepiece that is easy to operate and understand, is more practical, and is excellent in design. .

[0009]

In order to solve the above-mentioned problems, a configuration according to claim 1 comprises a step motor A for driving an hour / minute hand disposed at the center of a timepiece body, and a step motor A disposed coaxially with the hour / minute hand. A step motor B for driving the set center hand, a function display means arranged at a position off the center of the clock body, and a function capable of switching the functions of the hour / minute hand and the center hand by rotating the winding stem. Switching means, wherein the function display means switches display contents by the function switching means, and the hour and minute hands and the center hand perform functional operations corresponding to the display contents.

According to a second aspect of the present invention, there is provided the chronograph hand according to the first aspect, wherein the chronograph hand is disposed at a position deviated from the center of the timepiece. The step motor B drives the chronograph hands and also drives the center hands via a wheel train.

[0011]

According to a third aspect of the present invention, in the first aspect, a zero position setting function is provided by which the hand switching reference of the hour and minute hands and the center hand at the start of hand movement can be set by the function switching means. It is characterized by being.

According to a fourth aspect of the present invention, in the first aspect, when the function switching means switches to another function different from the conventional one, the fast-forward hand movement direction of the hour / minute hand or the center hand is changed to the different function. It is characterized in that the hand is moved in a direction in which the time is the shortest until it is moved to the position where is displayed.

According to a fifth aspect of the present invention, in the state switched to the normal time display state by the function switching means, the hour and minute hands display the hour and minute of the normal time, and the center hand displays the date. It is characterized by.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the A switch and the B switch arranged on the outer peripheral portion of the timepiece body when the function switching means is switched to the stopwatch function. The measurement of the stopwatch is started and the measurement of the stopwatch is reset by the switch.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the time and minute hands are further linked with the operation of the hour and minute hands.
It has a four-hour hand. In the configuration according to claim 8, the hour / minute hand according to any one of claims 1 to 7, displays the normal hour and minute when the function display means is in the normal time display function state, and measures the stopwatch when the function display means is in the stopwatch function state. It is characterized in that, when the function display means is in the alarm set function state, the hour and minute display is an alarm set time and hour and minute display. The configuration according to claim 9 is
Hardware has means for forcibly setting a core CPU, a frequency dividing circuit, and other peripheral circuits to an initial state, and one or more step motors. A drivable signal pulse is output, and the number of reverse direction drive pulses and the number of forward direction drive pulses are the same for each step motor. According to a tenth aspect of the present invention, in the stopwatch function, after the stopwatch operation is operated for a predetermined time or more after the switch operation, the chronograph hand performs a sector-shaped hand movement forward and backward with the 12 o'clock position symmetrical. The configuration according to claim 11 is
At the time of the timer function, when the timer is operated by a switch operation from a state where the timer set time is set beyond a predetermined time, the chronograph hand is set to 12
It is characterized in that the fan-shaped hands are moved back and forth until the predetermined time with the time position being symmetrical. According to a twelfth aspect of the present invention,
In a multifunction electronic timepiece having a center second hand arranged to overlap the hour and minute hands, the center second hand has a crescent-shaped shape in which one end has a sharp second indication shape according to the function and the other end has a pointer function as a calendar display. It is characterized by having.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. FIG. 1 is a front plan view showing an embodiment of the multifunction electronic timepiece of the present invention. In the present embodiment, multi-functionalization is realized by using two step motors.

Reference numeral 1 denotes a ground plate made of plastic resin molding, and reference numeral 2 denotes a battery. Reference numeral 3 denotes a stepping motor A for driving a train of wheels for indicating the time of the hour and minute hands, a magnetic core 3a made of a material having a high magnetic permeability, a coil wound around the magnetic core 3a, and a coil having both ends conductively terminated. Lead board 3
b, a coil block 3d composed of a coil frame 3c, a stator 4 composed of a high magnetic permeability material, and a rotor 5 composed of a rotor magnet 5a and a kana 5b. Also, 6, 7,
Reference numeral 8 denotes a fifth wheel, a third wheel, and a second wheel, respectively, 9 denotes a minute wheel, and 10 denotes an hour wheel. The center wheel 8 with a minute hand and the hour wheel with a magnetic core are arranged at the center position of the watch body.
With these motor and wheel train configurations, the hour and minute indications according to the respective functions are performed at the center of the timepiece body. For example, in the current time display function state, the normal time is displayed, in the stopwatch function state, the stopwatch measurement time is displayed, and in the alarm set function state, the alarm set time is displayed. FIG. 2 is a cross-sectional view showing the engagement state of the wheel train for displaying the hour and minute. As shown in the figure, the rotor pinion 5b meshes with the gear 6a of the fifth wheel & pinion 6, and the fifth pinion 6b meshes with the gear 7a of the third wheel & pinion 7. The pinion 7b of the third wheel & pinion 7 meshes with the gear 8a of the second wheel & pinion 8. The reduction ratio from the rotor pinion 5b to the second pinion gear 8a is 1/120, and when the rotor makes a half turn (180 °) in 15 seconds, the second pinion wheel makes one turn in 3600 seconds, that is, 60 minutes. , The minute of the time can be displayed. Reference numeral 11 denotes a minute hand fitted to the end of the center wheel & pinion 8 for displaying minutes. The second pinion 8b meshes with the gear 9a of the minute wheel 9, and the minute pinion 9b meshes with the hour wheel 10. The reduction ratio from the second kana 8b to the hour wheel 10 is 1/12, and the time can be displayed. Reference numeral 12 denotes an hour hand engaged with the end of the hour wheel 10 for indicating the hour.

In FIG. 1, reference numeral 13 denotes a step motor B for displaying a stopwatch second and a date, and a magnetic core 13a made of a material having a high magnetic permeability, a coil wound around the magnetic core 13a, and both ends of which are electrically conductively terminated. Coil block 13 composed of coil lead board 13b and coil frame 13c
d, stator 14 and rotor magnet 15 made of high magnetic permeability material
The rotor 15 is composed of a and a pin 15b. Also, 16, 17, 18 and 19 are second CG first intermediate wheel, second CG second intermediate wheel, second CG third intermediate wheel, and second C
It is a G car, and the second CG car 19 is arranged at the center position of the watch body. With these wheel train configurations, the stopwatch second and date are displayed coaxially with the hour and minute hands at the center position of the watch body. FIG. 3 is a cross-sectional view showing the train wheel engagement state for displaying the stopwatch seconds and date. As shown in the drawing, the rotor pinion 15b meshes with the gear 16a of the second CG first intermediate wheel 16, and the second CG first intermediate pinion 16b meshes with the gear 17a of the second CG second intermediate wheel 17. The second CG second intermediate pinion 17b meshes with the gear 18a of the second CG third intermediate wheel 18, and the second CG third intermediate pinion 18b meshes with the gear 19a of the second CG wheel 19. The reduction ratio from the rotor pinion 15b to the second CG gear 19a is 1/900. Reference numeral 20 denotes a center hand fitted to the tip of the second CG wheel 19 for displaying seconds and dates. The center hand has a function of displaying seconds at one end and a function of calendar display at the other end, depending on the respective functional states. In FIG. 1, reference numeral 21 denotes a 1/10 second CG wheel disposed on a 12 o'clock axis of the watch body, and includes a rotor 15, a second CG first intermediate wheel 16, and a 1/10 second CG wheel 21.
1/10 second stopwatch display is performed. FIG. 4 is a cross-sectional view showing the engagement state of the train wheel for displaying the stopwatch for 1/10 second. As shown in the figure, the second CG first intermediate pinion 16b is the second CG car 2
Meshes with one gear. From the rotor kana 15b to the second C
The reduction ratio up to the G gear 21a is 1/15.

In the stopwatch function state, the CM
By the electric signal from the OS-IC 32, the rotor 15
Rotate 180 ° × 3 every / 10 seconds. As a result, the second CG wheel 19 rotates 0.6 ° every 1/10 second, that is, 0.6 ° × 10 steps per second, and can display a second that rotates once every 60 seconds. The 1/10 second CG car 21 is 1 /
It rotates 36 ° every 10 seconds, that is, 36 ° × 10 steps per second, and 1/10 second display becomes possible in conjunction with the second CG car. In the current time display function state, the CMOS-
Due to the electric signal from the IC 32, the rotor 15
X 30 rotations or 180 x 60 rotations. As a result, the second CG wheel 19 rotates 6 ° or 12 °, and the center hand 20 can display the date at one end. As an example of the display of the day, when the second CG car 19 displays in increments of 6 °,
For example, a half-circle calendar display of 1 to 31 is possible from the 3 o'clock position to the 9 o'clock position. Also, in the case of 12 ° increments, if the interval between 29-30 and 30-31 is set to 6 ° increments, full-circle calendar display is possible. In an external view of an embodiment to be described later, an embodiment in which an entire calendar is displayed is shown.

In FIG. 1, reference numeral 22 denotes an external operating member, which is a winding stem with a crown, and 23 is a shim for engaging with the winding stem 22. The setting lever 23 engages with the latch 24 to determine the pull-out position of the winding stem 22 and, at the same time, engages the switch lever 25 and the lower surface dowel 23c to move the switch lever 25 together. The latch 24 determines the position of the catch wheel 26 in the axial direction of the winding stem 22 by engagement with the lever 23. With these switching structures, a circuit-like switching state as a clock body is set. FIG. 5 is a sectional view showing an engaged state of the switching structure. As shown in the figure, the lever 23 is pivotally supported by a lever shaft 27 incorporated in the main plate 1, the side surface 23 a which is lowered one step is engaged with the latch 24, and the switch lever is formed by a dowel 23 c integrally formed on the lower surface thereof. 25. Also, the lower surface 23b which is raised by one step is engaged with the winding stem. The shim 23 is pressed and fixed by a shim pressing spring 28 a of the battery plus terminal 28, and is stabilized and, at the same time, is formed in three steps up and down with respect to a surface received by the shim 23 on the shim 27. It is possible to minimize the moment of the force received from the lever 24 and to stabilize the shim 23 without being pulled up. The latch 24 and the switch lever 25 as a switch member are sandwiched between the train wheel bridge 29 and the main plate 1 with a certain clearance and guided. Switch lever 25
Is rotatable about the dowel 19 of the main plate 1, and the contact spring portion 25 a with the rotation of the switch lever 25 is pressed against the circuit block 30 by interlocking with the lever 23. The switch lever 25 is configured to be in pressure contact with the mode correcting jumper 31 by the reaction force of the switch lever 25 while being pressed against the circuit block 30. The mode correction jumper 31 is positively conducted by the positive conduction spring 28b of the battery plus terminal 28, and is electrically conducted to the switch lever 25.

In FIG. 1, reference numeral 28 denotes a battery plus terminal, which is made of an elastic conductive member. The battery 2 is held and conducted by the battery-side pressure springs 28 c and 28 d of the battery plus terminal 28, and the upper surface is fixed by the battery pressing plate 33.
The battery plus terminal 28 has switch spring portions 28e and 28f substantially symmetrically with respect to the winding stem 22 located at 3 o'clock. The battery plus terminal is provided with springs 28g and 28g for preventing backlash of a magnetic-resistant plate located between the timepiece and the back cover as an exterior member.
h, 28i, backlash preventing spring 28 in the sectional direction of the watch body
k, 28l, 28m, holding spring 28n of the crystal unit,
It has a positive conduction spring 28p to the booster coil. With these elastic spring structures, conduction as a timepiece, holding and fixing of components, holding of the timepiece, and the like are performed.

FIG. 6 is a sectional view showing a fixing portion of the battery 2 held by the battery plus terminal 28. As shown in the drawing, the battery 2 is held from the side by the battery-side pressure springs 28c and 28d of the battery plus terminal 28, and at the same time, the battery 2 conducts positive conduction. The state before the battery-side pressure spring 28d is incorporated into the battery is at the position 28d 'as shown by a two-dot chain line.
By engaging the engaging portion 28d-1 of the battery plus terminal 28 with the battery 2, the battery 2 is held by the lateral pressure of the spring, and the battery plus terminal 28 can be prevented from rising upward in cross section. Further, the battery holding plate 33 has a burring portion 33a which is guided at the battery-side tip portion of the screw pin 81 which is driven and fixed to the base plate 1, and has an outer peripheral portion of the opening 1c of the base plate which escapes an outer periphery of the burring portion 33a. The screw 91 is clamped and fixed by tightening. At the same time as the battery holding plate 33 is positioned by the burring portion 33a, the battery pressing plate 33 is positioned in the rotational direction by an engaging portion 33b that is engaged with the positioning hole 28q of the battery plus terminal 28. When the battery holding plate 33 is incorporated and fixed, the burring portion 33a
, And the screw 91 can be tightened and fixed at the same position, so that the member can be fixed in a very small space. Further, as described above, the battery-side pressure spring 28d of the battery plus terminal 28 returns to the position of 28d 'at the same time as the removal of the battery 2, so that a structure such as removing a screw or the like is not required.

FIG. 7 is a sectional view showing a switch portion of a switch spring portion 28f constituted by the battery plus terminal 28. 8 and 9 are a sectional view showing a contact portion between the circuit board 30a and the switch conducting portion 28f-1 of the battery plus terminal 28, and a sectional view showing the button pressing portion 28f-2. As shown in the figure, the switch conducting portion 28f-1 located at the tip of the switch spring portion 28f of the battery plus terminal 28 is at the position 28f-1 'shown by a two-dot chain line before the spring is assembled. At the same time, the spring engages with the spring hook portion 1d of the main plate 1 to give the spring an initial deflection. By providing the switch spring with an initial deflection, it is possible to suppress variations in the planar spring positions of the switch conducting portion and the button pressing portion, and at the same time, it is possible to have a reaction force for returning the button. In this embodiment, the switch conducting portion 28f-
By hooking 1 on the main plate 1d, the planar position of the button pressing portion located in the middle of the spring is stabilized without variation. Next, the operation when the button is pressed will be described in detail. The switch spring portion 28f presses the button pressing portion 28 against the spring root portion 28f-3 and the switch conducting portion 28f-1.
f-2 is configured in a T-shape. By pressing the button 34, a switch input is made in contact with the switch conducting section 28f-1. Further, the button pressing portion 28f-2 of the switch spring is twisted even if the button 34 is pressed, so that the switch spring 28
Unnecessary stress is not generated in f, and there is no break, settling or the like.

Next, the circuit configuration of the circuit block 30 will be described. In FIG. 1, 35 is a battery negative terminal, 3
Reference numeral 6 denotes a buzzer lead terminal which is in pressure contact with the piezoelectric element. As electric elements mounted on the circuit block 30, 37 is a step-up coil, 38 is a transistor for a buzzer, 39 is a capacitor for protecting a battery, 40 is a capacitor for slowing and increasing a rate, and 4
Reference numeral 1 denotes a crystal unit having a built-in crystal oscillator, and reference numeral 32 denotes a CMOS-IC for transmitting an electric signal. Reference numeral 42 denotes a circuit spacer for electrically connecting the circuit block 30 and the coil lead boards 3b and 13b in cross-sectional pressure. The electric circuit configuration will be described later, and the circuit structure will be described in detail here. The CMOS-IC 32 is fixed by a mold 30b after being wire-bonded to the circuit board 30a. Other elements are mounted and fixed with solder.

FIG. 10 is a sectional view showing the conduction structure of the battery minus terminal 35. Battery negative terminal 35 is ground plate 1
Are guided by the guide dowels 1e and 1f, and one end is in contact with the (−) side of the battery 2 and the other end is in contact with the circuit board 30a with the shoulder 1g of the main plate as a fulcrum. The battery minus terminal 35 and the buzzer transistor 38 are arranged so as to overlap in plan. The outer periphery of the transistor 38 is covered with a resin material, so that short-circuiting does not occur even when the transistor 38 contacts. In the same figure, a spring 28p for conducting a positive potential to the booster coil 37 is formed near the backlash prevention spring 28k of the battery plus terminal 28. The backlash prevention spring 28k bends with the spring 28p by incorporating the back cover 71 as an exterior member, and the spring 28k
p is pressed against the circuit board 30c. That is, the booster coil 37 has a structure in which a positive potential is obtained only after the exterior is incorporated and the complete state is reached. This is because if there is an output of a buzzer in a state where the piezoelectric element is not connected, the CMOS-IC may be reset by the output noise.

As described above, the guide dowel 1 of the main plate 1 for positioning the battery negative terminal 35 in FIG.
A transistor 38 is arranged between e and 1f so as to overlap in a plane. Since the transistors 38 are arranged in a plane so that the normal mounting position of the transistor 38 is not overlapped with other components, the space can be reduced, and the other components can be arranged with a margin. Also, by ensuring that the cross section overlap H1 of the guide dowels 1e and 1f of the main plate 1 and the transistor 38 is constant, the battery negative terminal 35 does not disengage from the guides 1e and 1f when an impact is applied. Can be

FIG. 11 is a rear plan view showing one embodiment of the multifunction electronic timepiece of the present invention shown in FIG. Along with FIG. 1, the electronic timepiece of the present invention has a stopwatch function, an alarm function, a timer function, a dual time display function and the like in addition to a basic timepiece function, arranged at the center of the timepiece body, and at 3, 9 and 12 o'clock. This indicates that the display is to be performed.
A mode display structure in which each function is displayed by a window arranged at the 6 o'clock position on the dial will be described below.

FIG. 12 is a main part plan view showing the switching section and the mode correction contact section in FIG. 1, and FIGS. 13, 14, and 15 are sectional views showing the mode correction structure. In FIGS. 11 to 14, the continuous wheel 26 is engaged with the mode correction transmission wheel 101 at the 0th stage of the winding stem so that the mode can be switched by turning the winding stem 22 in the normal portable state. When the winding stem 22 is turned, the ratchet wheel 26 rotates, and further, the rotation is transmitted to the mode correction axle 104 via the mode correction transmission wheel 101, the first mode correction intermediate wheel 102, and the second mode correction intermediate wheel 103. The mode correcting axle 104 penetrates from the front side to the rear side (the dial 72 side) of the watch body as shown in FIG. 13 and is guided and held by guide holes provided in the main plate 1 and the train wheel bridge 29, respectively. The main plate engaging portion 104a of the mode correcting axle 104 has a circular cross section, and the engaging portion 104b of the mode contact spring 105, which is a rotary switch, and the engaging portion 104c of the second mode correcting intermediate wheel 103 are shown in FIG. D as shown
The mode contact spring 105 and the second mode correcting intermediate wheel 103 are respectively engaged with D-shaped holes provided in the intermediate wheel 103, and the three parts are integrally rotated.
Contact portions 105a and 105 of the mode contact spring 105
b denotes the substrate 3 of the circuit block 30 on which electric elements are mounted.
Patterns 30d, 30e, 30f, 30g, 3 on 0a
0h. The mode contact spring 105 rotates in conjunction with the winding stem operation by the above-described structure, and the contact portions 105a and 105b and the patterns 30d to 30h are rotated.
By changing the combination of the contacts, the mode can be electrically switched. That is, the contact portion 105b of the mode contact spring 105 always has a positive potential of 30.
Depending on whether the contact portion 105a at the other end is open (non-contact state) or how it is in contact with 30e, 30f, or 30g in combination, it is possible to create max23 different states. Further, by simultaneously pressing the A and B switches while rotating the winding stem in the normal state of the winding stem, the contact portion 105a of the mode contact spring 105 becomes conductive with the pattern 30h on the circuit board, and It is possible to reset the system of the CMOS-IC.

The mode correcting axle 104 is rotationally positioned by engaging the jump controlling portion 31a of the mode correcting jumper 31 with a jump controlling gear 104e formed integrally with the mode correcting axle 104. Mode correction jumper 31
Are guided by the dowels 1h and 1i, and the jump control part 31a is hooked on the main plate 1j and positioned. In this state, the jump control gear 104e of the mode adjustment axle 104 and the jump control section 31a of the mode adjustment jumper 31 have a certain clearance H2. If the gap is not provided, the rotation of the mode correcting axle 104 can be prevented from rattling. However, when the mode correcting axle 104 is guided only by the main plate in the assembling process, the mode correcting axle 104 tilts when a force is applied by the mode correcting jumper 31, and the train train to be incorporated later Receiving becomes very difficult. Therefore, the provision of the above-mentioned gap H2 improves the assemblability. However, if the gap H2 is too large, positioning becomes impossible, so that it is set to about 2/100 mm.

By rotating the winding stem 22, the winding stem is rotated with the load torque until the jump control gear 104e of the mode correcting axle 104 passes over the top of the jump controlling portion 31a of the mode correcting jumper 31. And the jump control part 31a
From the top to the rest position by the jump control of the mode correction jumper 31. Therefore, in the transmission system relating to the mode correction from the mode correction axle 104 to the second mode correction intermediate wheel 103, the first mode correction intermediate wheel 102, the mode correction transmission wheel 101, and the winding stem 22 via the continuous wheel 26, Modified axle 104
Need to be arranged so that they can be reliably rotated by the dynamic control jumper 31. In the present embodiment, in the D-shape of the engagement portion 104c of the mode correcting axle 104 and the D-shaped center hole shape of the second mode correcting intermediate wheel 103, the rotation direction is at least half the gear pitch of the jump control gear 104e of the mode correcting axle 104. The hole width of the D-shaped center hole shape of the second mode correction intermediate wheel 103 is increased so that a play can be obtained. Therefore, the movement of the mode correction axle 104 becomes smooth, and the movement of the mode display wheel 106 described below can also be made smooth. In FIG. 11, the mode display wheel 106 is made of a synthetic resin material, and includes “Time”, “Reset”, “→”.
Mode display unit 1 on which character strings, marks, and the like indicating functional states such as 0 ← ”,“ Chrono ”, and“ Timer ”are printed.
06b and internal teeth provided inside the display section, and are guided by the guide section 1k provided on the main plate 1 and having an arc shape centered substantially on the center of the clock. In the present embodiment, the display located in the 6 o'clock direction is viewed from the window hole 72a provided in the 6 o'clock direction of the dial 72, so that the mode state is selectively displayed. Reference numeral 107 denotes a mode correcting wheel. A D-shaped hole provided at the center is engaged with a mode correcting wheel engaging portion 104d of the mode correcting axle 104, and rotates integrally with the mode correcting axle 104. The mode correction wheel 107 meshes with the internal teeth of the mode display wheel 106, and the rotation of the mode correction wheel 104 is changed to the mode display wheel 1
Tell 06. Therefore, the mode display wheel 106 can be rotated around the center of the clock. According to the above-described structure, the mode display portion 106b of the mode display wheel 106 can be disposed near the outer periphery with respect to the center of the clock, and as a result, the display area for one mode on the mode display portion 106b is widened, and a large and easy-to-view mode display is achieved. It becomes possible. The mode display wheel 106 is positioned in a plane by a mode display jumper 108, and the cross-sectional direction is held between the mode display wheel pressing plate 109 with a certain clearance. Since the dynamic control of the mode display vehicle 106 by the mode display jumper 108 is transmitted as a load to the mode correction axle 104 via the mode correction vehicle 107, the dynamic control of the mode display jumper 108 is controlled by the mode correction jumper 31 described above. The setting is as weak as possible for control. Mode display jumper 108
By using this, the variation in the mode display position can be reduced, so that the gap between the window hole of the dial and the character string or mark indicating the mode can be reduced, and the character size can be increased accordingly.

The rotation of the winding stem 22 causes the mode correcting axle 104 to rotate as described above, so that electrical mode switching can be performed on the front side of the watch body, and at the same time, the mode can be changed via the mode correcting wheel 107 on the back side of the watch body. The display wheel 106 is rotated and the mode display is switched. In the present embodiment, the number of teeth of the jump control gear 104e of the mode correcting axle 104 is six, and the number of teeth of the mode correcting wheel 107 capable of performing six functional states per one round of the mode correcting axle 104 is 12.
The number of teeth of the mode display wheel 106 is set to 24, and the mode display wheel 106 is set so as to make a half turn for one round of the mode correction axle 104. In order to match the phases of the functional states of the mode correcting wheel 107 and the mode displaying wheel 106, a positioning hole 107a is formed in the mode correcting wheel 107 and the mode displaying wheel 106 is formed by printing. Has been implemented. This enables a mode display that matches the electrical mode setting state.

Reference numerals 109 and 110 denote a mode display wheel holding plate and an hour wheel holding plate, respectively, which are holding members for vehicles related to the auxiliary hand display and vehicles related to the mode display. The mode display wheel holding plate 109 is the same as the dial plate 72 and has a window hole 1 for mode display.
09a. In the present embodiment, the mode display section is set at 6 o'clock. However, according to the mode display structure of the present invention, the display section is located at any position within the range in which the mode display section of the mode display wheel 106 rotates. Because it can be set, the degree of freedom in design increases. Also, the mode display wheel holding plate 1
Reference numeral 09 has a step 109b substantially near the bottom of the inner teeth of the mode display wheel 106 so as not to rub the mode printing surface of the mode display wheel 106. The mode display wheel holding plate 109 may have a structure in which the teeth of the mode display wheel 106 are held with a certain gap in cross section, and a step is formed on the outer peripheral portion to protect the printing surface. Further, the hour wheel holding plate 110 positions the cross section of the hour wheel 10 disposed at the center of the timepiece. The upper portion of the hour wheel 10 of the hour wheel holder 110 has bending portions 110a and 110b, and is located between the mode indicating wheel holder 110 and the mode indicator wheel holding plate 109. This prevents lifting of the hour wheel 10 via the dial 72 and the mode display wheel holder 109 when the hour hand 12 is engaged with the leading end of the hour wheel 10, so that the hour wheel 12 meshes with the hour wheel 10. There is an effect that kana 9b and the 24:00 intermediate wheel 111 can be completely eliminated.

In FIG. 12, the switch lever 25, which is a switch member, rotates about a rotation shaft 1h formed on the main plate via a damper 23 as the winding stem 22 is pulled out. The second stage is electrically connected to the pattern 30i formed on the circuit board, and the second stage is electrically connected to the pattern 30j. Thus, the correction state of the hour and minute hands and the date is created by the combination with the contact state of the mode contact spring 105 with the circuit pattern described above.

In FIG. 11, reference numeral 10 denotes an hour wheel, which indicates the hour by the above-described front wheel train configuration. Reference numeral 111 denotes a 24:00 intermediate wheel that meshes with the hour wheel, and 112 denotes a 24:00 wheel that meshes with the intermediate 24:00 wheel. Reference numeral 113 denotes a DT24 intermediate wheel that meshes with the hour wheel, and 114 denotes a DT24 intermediate wheel.
It is a DT 24:00 wheel that meshes with the hour intermediate wheel. 24 o'clock car 11
2 and DT 24 hour wheel 114, 1/10 CG mentioned above
The wheel 21 is an auxiliary hand pointer wheel arranged at an equal distance from the center of the clock body. With these back train wheel configurations, 24
Hour and dual time 24 o'clock are displayed. FIG.
Reference numerals 4 and 16 are sectional views showing the wheel train meshing state for the 24-hour and dual-time 24-hour display. As shown in the figure, the 24-hour wheel 112 and the DT 24-hour wheel 114 are the hour wheel 10
From the intermediate car at 24:00 and the intermediate car at DT at 24:00
The vehicle is decelerated to 2 and functions as an auxiliary hand wheel indicating 24 hours. The DT 24-hour wheel 114 has a structure in which the dual time can be corrected independently by pulling out the winding stem 22 one step. By pulling out the winding stem 22 by one step, the operation of the above-described setting lever 23 and the latch 24 causes the continuous wheel 26 to move.
Moves and meshes with the DT 24:00 correction wheel 115. By rotating the winding stem 22 in this state, the DT24: 00 correction wheel 115 rotates, and the DT24 wheel 114 meshing with the DT24: 00 correction wheel 115 rotates. DT 24 hour car is hour wheel 1
0 and DT24H are linked via the intermediate wheel 113,
Since the gear portion 113a and the pinion portion 113b of the DT24: 00 intermediate wheel 113 have a structure capable of slip rotation,
By operating the winding stem 22, the DT 24 hour wheel 114 can be individually corrected, and dual time display can be performed.

Next, the circuit configuration of the multifunction electronic timepiece of the present invention will be described.

FIG. 17 shows a circuit connection diagram of the CMOS-IC 32 and other electric elements. In FIG. 17, 2 is a silver oxide battery, 3b is a coil block of a step motor A, 1
3b is a coil block of the step motor B, 37 and 3
8 is a buzzer driving element, 37 is a booster coil, 3
8 is a monimold transistor with a protection diode, 39
Is a chip capacitor of 0 and 1 NF for suppressing a voltage fluctuation of a constant voltage circuit built in the CMOS-IC 32, and 41 is an ultra-small tuning fork type crystal resonator serving as a vibration source of an oscillation circuit built in the CMOS-IC 32 , 40 are a condenser for adjusting the rate, and 53 is a piezoelectric buzzer. 4
5 is an A switch and 46 is a B switch, which is input only when the push button switch is pushed. Reference numeral 47 denotes a C switch, and 48 denotes a D switch, which serves as a switch with the above-mentioned switch lever 25 and electrically determines the position where the winding stem 22 is pulled out. When the switch C47 is closed, the winding stem 22 is in the second stage, and when the switch D48 is closed, the winding stem 22 is in the first stage, and the switch C47 and the switch D4 are closed.
When the opening 8 is open, it is determined that the winding stem 22 is at the normal position. 49 is an RA1 switch, 50 is an RA2 switch,
Reference numeral 51 denotes an RB1 switch, which electrically switches modes according to the switch patterns 30e, 30g, and 30f of the mode switching unit described above. Reference numeral 52 denotes an RB2 switch, which enables a CMOS-IC system reset by simultaneously inputting the A switch 45 and the B switch 46. Reference numeral 28p denotes a battery positive terminal spring for applying a positive potential to the booster coil 37 described above.

FIG. 18 shows the CMOS-I used in this embodiment.
The block diagram of C20 is shown. As shown in FIG.
The OS-IC 32 includes a program memory, a data memory, four motor drivers, a motor operation control circuit, a sound generator,
This is a one-chip microcomputer for an analog electronic timepiece in which an interrupt control circuit and the like are integrated. Hereinafter, FIG.
8 will be described.

Reference numeral 201 denotes a core CPU, which includes an ALU, an operation register, an address control register, a stack pointer, an instruction register, an instruction decoder, and the like. The peripheral circuits communicate with an address bus (memory mapped I / O) by a memory mapped I / O system. adbus) and a data bus (dbus).

Reference numeral 202 denotes a program memory composed of a mask ROM having a 2048 word × 12 bit configuration.
The software for operating C is stored.

Reference numeral 203 denotes an address decoder of the program memory 202.

Reference numeral 204 denotes a data memory comprising a 112 word × 4 bit RAM, which is used as a timer for various timekeeping and a counter for storing the hand position of each hand.

Reference numeral 205 denotes an address decoder of the data memory 204.

Reference numeral 206 denotes an oscillation circuit, which includes Xin and Xo.
The tuning fork type crystal resonator connected to the ut terminal is 327
Oscillates at 68 Hz.

Reference numeral 207 denotes an oscillation stop detection circuit which detects when the oscillation of the oscillation circuit 206 stops, and resets the system.

Reference numeral 208 denotes a first frequency dividing circuit,
The frequency of the 32768 Hz signal φ _32k output from the 06 is sequentially divided to output a ₁₆ Hz signal φ ₁₆ .

A second frequency dividing circuit 209 divides the frequency of the ₁₆ Hz signal φ ₁₆ output from the first frequency dividing circuit 208 into a 1 Hz signal φ ₁ . The state of each frequency division stage from 8 Hz to 1 Hz can be read into the core CPU 201 by software.

In the IC of this embodiment, a 16 Hz signal φ ₁₆ , an 8 Hz signal φ ₈ , and a 1 Hz signal φ are used as time interrupts Tint for processing such as clocking.
₁ is used. The time interrupt Tint occurs at the falling edge of each signal, and reading, resetting and masking of each interrupt cause are all performed by software, and reset and mask can be individually performed for each cause.

A sound generator 210 forms a buzzer drive signal and outputs it to the AL terminal. The drive frequency, ON / OFF, and ringing pattern of the buzzer drive signal can be controlled by software.

Reference numeral 211 denotes a stopwatch circuit,
1/10 when constructing a stopwatch
By controlling the hand movement of the 0-second hand by hardware, it is possible to significantly reduce the load on software.

Reference numeral 212 denotes a motor movement control circuit, which is specifically configured as shown in FIG. 19, and outputs a motor drive pulse to each motor driver based on a command from software. Hereinafter, FIG. 19 will be described.

Reference numeral 219 denotes a motor hand operation control circuit.
In addition to storing the hand movement method of each motor in accordance with a command from software, Sa for selecting the forward drive I, Sb for selecting the forward drive II, Sc for selecting the reverse drive I, Sd for selecting the reverse drive II, S for selecting forward rotation correction drive
Form and output each control signal of e.

Reference numeral 220 denotes a hand movement reference signal forming circuit which is specifically configured as shown in FIG. 20, and forms and outputs a hand movement reference clock Cdrv in accordance with a command from software.

In FIG. 20, reference numeral 2201 denotes a 3-bit register, which stores data for determining the frequency of the hand driving reference clock Cdrv in accordance with an instruction from software (output signal of the address decoder 2202). Reference numeral 2203 denotes a 3-bit register, which captures and stores the data stored in the register 2201 at the falling edge of the hand movement reference clock Cdrv output from the programmable dividing cycle 2205. Reference numeral 2204 denotes a decoder corresponding to the data stored in the register 2203;
The numbers 2, 3, 4, 5, 6, 8, 10, 16 are output in binary form. 2205 is a programmable frequency divider,
256 Hz signal φ output from first frequency dividing circuit 208
_Assuming that the numerical value output from the decoder 2204 is n, ₂₅₆ is divided into 1 / n and output. Therefore, the hand movement reference signal forming circuit 220 responds to a command from the software.
The frequency of the hand driving reference clock Cdrv is 128 Hz, 8
5.3Hz, 64Hz, 51.2Hz, 42.7Hz,
It can be selected from eight types of 32 Hz, 25.6 Hz, and 16 Hz. Further, the frequency change of the hand movement reference clock Cdrv is performed at the time when the data is taken into the register 2203, and the data take-in to the register 2203 is performed in synchronization with the hand movement reference clock Cdrv. When switching to the next frequency fb, an interval of 1 / fa is always ensured.

When the forward rotation drive I and the reverse rotation drive are performed continuously, the frequency of the hand movement reference clock Cdrv is limited to 64 Hz or less.

Reference numeral 221 denotes a first drive pulse forming circuit which forms and outputs the drive pulse Pa for the forward rotation drive I shown in FIG.

Reference numeral 222 denotes a second drive pulse forming circuit which forms and outputs the drive pulse Pb for the forward rotation drive II shown in FIG.

Reference numeral 223 denotes a third drive pulse forming circuit which forms and outputs the drive pulse Pc for the reverse rotation drive I shown in FIG.

Reference numeral 224 denotes a fourth drive pulse forming circuit which forms and outputs the drive pulse Pd for the reverse rotation drive II shown in FIG.

Reference numeral 225 denotes a fifth drive pulse forming circuit, which is a group of pulses Pe for correction drive (Japanese Patent Laid-Open No. 60-2608).
83, a normal drive pulse P ₁ , a correction drive pulse P ₂ , an AC magnetic field detection pulse P ₃ , an AC magnetic field detection pulse SP ₁ , and a rotation detection pulse SP ₂ ) are formed and output.

Reference numerals 226, 227, 228, and 229 denote motor clock control circuits, which are specifically configured as shown in FIG. 25, and control the number of hand movement pulses of the step motor in accordance with a command from software.

Referring to FIG. 25, reference numeral 2261 denotes a 4-bit register which stores the number of hand movement pulses instructed by software. Reference numeral 2262 denotes a 4-bit up counter, which counts the hand movement reference clock Cdrv passing through the AND gate 2274, and is reset by the control signal Sreset. 2263 is a coincidence detection circuit,
The contents of the register 2261 and the up-counter 2262 are compared, and when they match, a match signal Dy is output. An all 1 detection circuit 2264 outputs an all 1 detection signal D15 when the contents of the register 2261 are all 1. 22
Numeral 65 is a trigger signal generating circuit for forming a motor drive pulse, which is composed of NOT gates 2266 and 2267, a three-input AND gate 2268, a two-input AND gate 2269, and a two-input OR gate 2270, and all 1 (15) are set in the register 2261. When it is set, the motor pulse is output repeatedly until other data is set. When the data other than all 1s is set, the motor pulse is output by the amount of the data, and the motor pulse is output until the next data is set. The output is configured to stop. Reference numeral 2271 denotes a bidirectional switch, and a control signal S
ON when read is output, up counter 2
262 data can be collected on the data bus. A control signal forming circuit 2272 resets the signal Sset for setting the number of hand movement pulses in the register 2261, the signal Sread for reading data of the up counter 2262, the register 2261, and the up counter 2262 in accordance with a command from software. Reset signal for
Is formed and output. When the signal Sread is output, the passage of the hand movement reference clock Cdrv is prohibited by the NOT gate 2273 and the AND gate 2274.
In this case, after reading, it is necessary to reset the register 2261 and the up counter 2262 by generating the signal Reset. When the match detection circuit 2263 detects a match (when the set number of pulses has been output), each motor is controlled by the motor control interrupt Min.
generates t. When a motor control interrupt occurs, it is possible to read which interrupt has occurred by software, and to reset after the reading.

Reference numerals 230, 231, 232, and 233 denote trigger forming circuits, which are hand-movement-system control signals Sa, Sb, Sc, Sd, output from the motor-hand-movement-system control circuit 219.
In response to Se, the trigger signal Tr output from the motor clock control circuit is set to 221, 222, 223, 22
The drive pulse control circuits 4 and 225 pass the trigger signals Sat, Sbt, Sct, Sdt, and Set for forming the motor drive pulses Pa, Pb, Pc, Pd, and Pe.

Reference numerals 234, 235, 236, and 237 denote motor drive pulse selection circuits, and the hand movement control signals Sa, S
b, Sc, Sd, and Se, corresponding to the motor drive pulses Pa, Pb, Pc, output from each drive pulse forming circuit.
A drive pulse required for each step motor is selected and output from Pd and Pe. This is the end of the description of FIG.

Reference numerals 213, 214, 215, and 216 denote motor drivers which alternately output motor drive pulses output from a motor drive pulse selection circuit to two output terminals of each motor drive circuit. Drive.

Reference numeral 217 denotes an input control and reset circuit. A, B, C, D, RA1, RA2, RB1, RB2
, And the input terminals of K, T, and R are processed. Any one of A, B, C, D or any one of RA1, RA2, RB1, RB2
When two switches are input, switch interrupt Swi
nt. At this time, reading and resetting of the interrupt factor are performed by software. Each input terminal is _pulled down to _VSS , and becomes data 0 in an open state and data 1 in a state of being connected to _VDD .

The K terminal and the D1, D2, D3, and D4 terminals are specification switching terminals, and several types of specifications can be selected according to the data of these terminals. The reading of data from these terminals is performed by software.

The R terminal is a system reset terminal.
When the terminal is connected to V _DD , the core C
The PU, the frequency divider, and other peripheral circuits are forcibly set to the initial state.

The T terminal is a test mode change terminal.
By inputting a clock to the T terminal with the A2 terminal connected to V _DD , 16 test modes for testing peripheral circuits can be switched. The main test modes include a forward I confirmation mode, a forward II confirmation mode, a reverse I confirmation mode, a reverse II confirmation mode, a correction drive confirmation mode, a chronograph 1/100 second confirmation mode, and the like. In the confirmation mode, a motor drive pulse is automatically output to each motor drive pulse output terminal.

The system reset can be performed not only by connecting the R terminal to V _DD but also by simultaneous input of switches.
The present IC is configured so that a system reset is forcibly performed by hardware when A, B, and RB2 are simultaneously input.

The reset function that can be processed by software includes a frequency divider reset and a peripheral circuit reset. When the peripheral circuit reset is performed, the frequency divider is also reset.

Reference numeral 236 denotes an interrupt control circuit, which performs prioritization of each of the switch interrupts, chronograph interrupts, and motor control interrupts, stores the data until reading is performed, and performs reset processing after reading.

Reference numeral 200 denotes a constant voltage circuit, which is driven from a battery voltage (about 1.58 V) applied between V _{DD and} V _SS to about 1.2 V
Is formed and output to the _VSS terminal.

The description of FIG. 18 has been completed.

As described in detail above, the CMOS-
The IC 32 has the following features regarding the drive of the step motor, and is a multi-hand type multi-function analog electronic timepiece IC.
Very excellent as C.

(7) Motor drivers 213, 214, 21
5 and 216, and can drive four step motors simultaneously.

A hand movement control system has a control circuit 219, drive pulse forming circuits 221 to 225, and motor drive pulse selection circuits 234 to 237.
Three types of forward drive and two for four step motors
Various types of reverse drive can be performed.

A hand movement reference signal forming circuit 220 is provided, and the hand movement speed of each step motor can be freely changed by software.

[0095] Motor clock forming circuits 226 to 229 corresponding to the four step motors are provided, and the number of hand movement pulses of each step motor can be freely set by software.

FIG. 26 is an external view of a completed multifunctional electronic timepiece of the present embodiment. 60 is an exterior case, 72 is a dial. Crown 61, 2 o'clock, linked to the winding stem at 3 o'clock,
Buttons 45a and 46a are arranged at the 4 o'clock position. In the center of the clock body, the hour hand 12, minute hand 11, center hand 20
And displays the hour, minute, stopwatch second, or day, respectively. The sub-hands arranged at the same distance from the center of the watch body are a 1/10 second chronograph hand 64 at the 12 o'clock position, a dual time 24 o'clock hand at the 3 o'clock position, and a 24 o'clock hand at the 9 o'clock position. A mode display window 72a for displaying a function at 6 o'clock is provided on the dial, and a mode display wheel 106 displays a function below the mode display window 72a. In the present embodiment, the following six mode displays are provided, and the function corresponding to each mode display is performed. The six mode displays are "TIME",

[Outside 1] “→ 0 ←”, “TIMER”, and “CHRONO”.

Of the six modes, in the 0 position set mode indicated by “→ 0 ←”, the hour hand 12 and the minute hand 1
1, center hand 20, 1/10 second chronograph hand 64,
The reference position of the 24-hour hand 65 is set. Crown 6
1 to rotate the mode switch RA13.
0e, RA 230g, RB 130f, RB 130
When only the switch 51 of f is turned on, the mode becomes the 0 position set mode. When the crown 61 is in the first position (when D48 is on), when the A switch 45 is turned on, the 1/10 second chronograph hand 64 moves clockwise in steps of one step (hereinafter referred to as forward rotation direction). The hand is moved, and the center hand 20 is also moved in conjunction with the movement. When the B switch 46 is input, the 1/10 second chronograph hand 64 moves in a counterclockwise direction (hereinafter referred to as a reverse direction), and in conjunction with this, the center hand 20 also moves. A or B switch 4
By continuing to press the buttons 5 and 46, the hand can be fast-forwarded and the 0 position can be set quickly. At this time, the reference clock for hand movement Cdrv uses 128 Hz in the normal rotation direction and 51.2 Hz in the reverse rotation direction. Similarly, crown 61 is 2
When it is at the stage (when C47 is ON), pressing the A or B button 45a, 46a causes the hour hand 12, minute hand 1
The reference position of the 1 and 2 o'clock hands 65 can be set. Number of hand movement steps, hand movement direction, hand movement reference clock Cdrv
Is the same as when the center hand 20 and the 1/10 second chronograph hand 64 are set. In all other modes, the reference clock for hand movement is 128 Hz in the forward rotation direction and 51.2 Hz in the reverse rotation direction. In any mode, based on the position set in the 0 position set mode, the current position of each hand is always stored in a hand position counter formed in a part of the data memory 204.

FIGS. 27 and 28 show flowcharts of the normal time mode indicated by the indication "TIME". The normal time mode is set when none of the mode switching switches are turned on. When the multi-function electronic timepiece of the present invention is used, it is expected that the time used in the normal time mode is the longest. Therefore, in this mode, since all the mode switching switches are turned off, the average current consumption is reduced. It can be expected to reduce the battery life and extend the life of the battery used. FIG. 27, FIG.
As shown in (1), when an interrupt of 1 Hz is input, 1 is added to a 15-second counter formed in a part of the data memory 204, and when the value of the 15-second counter is 15, the motor hand operation mode control circuit 219 Step motor A
3 forward rotation drive is set and the motor clock control circuit A22 is set.
Set the number of hands 1 to 6.

The correction of the current time is performed with the crown 61 in the second stage. Assuming that the crown 61 is the second stage, the hour and minute hands 12, 11 are moved in the forward direction to the position of the minute. Each time the button 45a (A switch 45) is pressed, the hour and minute hands 12, 11 are moved in the forward direction in units of one minute. Each time the button 46a (B switch 46) is pressed, the hour and minute hands 12, 11
Is moved in the reverse direction in units of one minute. By pressing and holding the button 45a or 46a, the hand is moved at a rapid traverse,
Correction in a short time is possible.

The date is corrected with the crown 61 in the first position. By pressing the button 45a while the crown 61 is in the first position, the center hand 20 is moved in the forward direction every day. Each time the button 46a is pressed, the center hand 20 is moved in the reverse direction every day. Similarly to the correction of the current time, it is possible to correct the fast forward by continuously pressing the button 45a or 46a. When the current time reaches 24:00, the center hand 20 indicating this date instantaneously rotates the 1/10 second chronograph hand simultaneously to advance the date by one day. Therefore, unlike the conventional analog clock, the center hand 20 clearly indicates even at around 24:00 at midnight. And you can check the date.

FIGS. 29 and 30 show flowcharts of the stopwatch function. Note that “CG” used in FIGS. 29 and 30 means a stopwatch. Also,
“CG start” indicates that the stopwatch measurement is being performed and the split display is released. RA13 by crown rotation
When the switch 49e of 0e is on and the crown is at the 0th stage (the C and D switches are off), a stopwatch display and measurement operation can be performed. Each time the button 45a (A switch 45) is input, the start and stop of the stopwatch measurement are repeated. When the stopwatch measurement is started, the CG 1/10 second counter formed in a part of the data memory 204 by the CG interrupt is incremented by +
When the 1/10 second chronograph hand 64 is moved every 3 steps in 1/10 second increments and the 1/10 second counter counts 15 seconds, the data memory 20
The CG 15 second counter formed in a part of the counter 4 is incremented by one, and the minute hand 11 is moved every 15 seconds. When the button 46a (B switch 46) is input at the time of "CG start", a split display state is set, and when the button 46a (B switch 46) is input in the split display state, "CG start" is set, and 1/10 seconds The chronograph hand 64, the center hand 20 indicating the second of the measurement time interlocked therewith, the hour hand 12 and the minute hand 11 are fast-forwarded until the measurement time is displayed. Button 4 when the stopwatch is stopped
When 6a (B switch 46) is input, the stopwatch measurement is reset and each hand other than the dual time 24 stitches 66 is fast-forwarded until the 0 position is displayed. If there is no crown or button operation for 10 minutes in the stopwatch measurement state, the 1/10 second chronograph hand performs a sector-shaped hand movement centering on the 0 position as shown in FIG. Normally, during stopwatch measurement, 30 motor pulses are generated per second. However, when the hand moves as shown in FIG. 31, only three motor pulses are generated per second, so that the battery life can be extended. You can see at a glance that the stopwatch is being measured.

FIGS. 32, 33 and 34 show flowcharts of the timer function. The timer setting time is indicated by the minute hand 11. When the switches 49 and 51 of the RA 130e and the RB 130f are turned on by turning the crown, the timer mode is set. If the crown is turned to the second stage (the C switch 47 is turned on), the set time can be changed. Button 4
Each time 6a (A switch 46) is input, the set time can be increased by one minute (4 steps). Each time the button 46a (B switch 46) is input, the set time can be reduced by one minute. By pressing and holding either button, fast forward can be set. Settings up to a maximum of 60 minutes are possible. Crown 61
Is the 0th stage, the timer measurement operation becomes possible. Immediately after switching from the other mode to the timer mode, the timer set time is preset by inputting the button 46a (B switch 46), and the minute hand 11 is fast-forwarded to the set time. The start / stop of the timer is performed by a button 45a (A switch 45). When the timer operation starts, the center hand 64 moves counterclockwise for 30 seconds per second.
Every step, the minute hand 11 moves counterclockwise for 15 seconds,
Displays the remaining time of the timer. However, when the remaining timer time is 5 minutes or more, the 1/10 second chronograph hand 64 performs the same sectoral movement as in the case where the stopwatch measurement is 10 minutes or more, and only the minute hand 11 displays the remaining time. The beeper sounds three seconds before the remaining time, and when the time reaches 0 seconds, a time-up sound sounds and the timer operation ends.

FIG. 35 shows a flowchart of the alarm setting function. RA 230g and RB by crown rotation
When the switches 50 and 51 of 130f are on, the alarm set mode is set, and the hour hand 12, the minute hand 11 and the 24-hour hand 6
5. The dual time 24-hour hand 66 is moved in rapid traverse until the alarm set time is displayed. To correct the alarm set time, use the second stage crown (C switch 47).
Is turned on), the minute hand 11 is moved one minute in the forward direction each time the button 45a (A switch 45) is pressed, and one minute in the reverse direction each time the button 46a (B switch 46) is pressed.
Is operated and the alarm set time can be corrected. Button 45a or button 46a as in the other correction modes
By continuing to press, the minute hand is moved forward or backward in rapid traverse, so that correction can be made in a short time. When the crown is in the second position, the hour hand 12, minute hand 11, 2
While the 4 o'clock hand 65 and the dual time 24 o'clock hand 66 are self-propelled to the alarm set time, the self-propelling can be stopped by pressing the button 45a or 46a, and the stopped position can be set as the alarm set time.

When only the switch 50 of the RA 230g is turned on by turning the crown, the hour hand 12, the minute hand 11 and the 24-hour hand 65 enter a mode indicating a normal time. In this state, the alarm set time set in the alarm set mode and the current time are set. If a match is found, the alarm sounds.

FIG. 36 shows a flowchart of a method for determining the fast-forward hand movement direction of each hand when the crown is rotated and the mode is switched. When switching from one mode to another mode, the self-propelled hand moves to the display indication position of the current mode by rapid traverse because the display contents of each mode are different, but the self-propelled time is the most It is going to be short. This is the same not only when the mode is switched, but also when each hand runs in the stopwatch mode or the timer mode.

FIGS. 37 and 38 show flowcharts of a method of moving each motor. FIG. 37 shows a method of moving the motor when the number of hand movements is 14 or less. FIGS. 38 (a) and 38 (b)
Is a fast-forward hand movement method of 15 or more rounds. The "motor pulse register" in the figure is the register 2261 in FIG.
That is.

Further, the demo hands of one reverse rotation and one transfer are performed for each motor immediately after the system reset at the second stage of the crown, so that the rotor magnets of the step motor A3 and the step motor B13 are magnetized. Direction can be uniquely determined. That is, the rotor can be adjusted to a position that always matches the hand operation pulse signal after the system reset. Also, by attaching the 1/10 second chronograph hand and the center second hand at the 0 position at this position, even if the system is reset after the 0 position adjustment, the 0 position can be operated normally without shifting.

In addition to the above functions, the multifunction electronic timepiece of this embodiment also has a time alarm function, a 12-hour alarm function, and the like. The terminal and the terminals D1, D2 and D3 can be selected depending on whether or not they are connected to VDD. For this reason, it is possible to configure a clock of several types with one IC.

[0093]

[0094]

[0095]

[0096]

[0097]

As described above, the present invention has the following effects. Since it has a function switching means capable of switching the functions of the hour and minute hands and the center hand by rotating the winding stem, it has a clean appearance almost in the same manner as a clock for displaying a normal time, and has visibility and operability. An excellent pointer-type multifunction watch can be provided. That is, since the function switching is performed by the rotation operation of the winding stem, it is not necessary to protrude a large number of input switch push buttons to the outer periphery of the outer case with multi-functionalization, so that the appearance of the outer case portion is made clear. And operability can be improved. In addition, since the function switching is performed by the rotation operation of the winding stem, the entire timepiece is thinner than in a method in which a rotating bezel is provided on the upper part of the outer case to perform the function switching, so that the appearance of the outer case can be reduced. . On the other hand, the functions of the hour and minute hands and the center hand are switched by rotating the winding stem, so that the function can be displayed according to each function without increasing the number of hands. Can be made clear and the visibility of the dial surface can be improved. Therefore, the dial surface and the outer case, which are particularly important points in appearance, can be made clearer, so that the overall appearance of the watch is improved, and accordingly, the pointer-type multifunctional watch has excellent visibility and operability. Can be provided. In addition, since the hour and minute hands and the center hand are arranged at the center of the watch body, the maximum display that is easy to visually recognize is performed, and the function display means is arranged at a position off the center of the watch body. Therefore, the contents of the function display can be displayed large along the outer periphery of the timepiece body, and in addition to the above-described effects, it is possible to provide a pointer-type multifunction timepiece that is more easily visually recognized in appearance. Furthermore, since the function switching between the hour and minute hands and the center hand is performed by the rotation operation of the winding stem, the power loss of the power supply caused by an operation not intended by the user is compared with a case where the function switching is performed by a push button. Can be prevented. In addition, the rotating operation of the winding stem is driven by mechanical force from the user's fingertip or the like without using electric power, so that the power supply life of the timepiece can be extended to operate the function display means. Therefore, the pointer-type multi-function watch that is easy to see in appearance is especially useful for flight pilots and divers who are fatal for a short judgment error.
It will be very easy to use.

[Brief description of the drawings]

FIG. 1 is a front plan view showing an embodiment of a multifunction electronic timepiece according to the present invention.

FIG. 2 is a sectional view showing a time-of-day and minute display wheel train.

FIG. 3 is a sectional view showing a chronograph second and date display wheel train.

FIG. 4 is a sectional view showing a 1/10 second chronograph display wheel train.

FIG. 5 is a sectional view showing a switching structure.

FIG. 6 is a sectional view showing a battery fixing structure.

FIG. 7 is a sectional view showing a switch spring structure.

FIG. 8 is a cross-sectional view illustrating a switch structure.

FIG. 9 is a sectional view showing a button switch structure.

FIG. 10 is a sectional view showing a battery negative conduction structure.

FIG. 11 is a rear plan view showing one embodiment of the multifunction electronic timepiece of the present invention.

FIG. 12 is a sectional view showing a mode correction wheel train and a back wheel train.

FIG. 13 is a sectional view showing a mode correction structure.

FIG. 14 is a sectional view showing a mode correction structure.

FIG. 15 is a sectional view showing a mode correction structure.

FIG. 16 is a sectional view showing a back train wheel.

FIG. 17 is a circuit connection diagram of the embodiment of FIG. 1;

FIG. 18 is a block diagram of the CMOS-IC 32 of FIG. 1;

FIG. 19 is a block diagram showing a specific configuration example of a hand movement reference signal forming circuit 220.

FIG. 20 is a block diagram showing a specific configuration example of a motor hand movement control circuit 212.

FIG. 21 is a timing chart of a motor drive pulse Pa output from a first drive pulse forming circuit 221.

FIG. 22 is a timing chart of a motor drive pulse Pb output from a second drive pulse forming circuit 222;

FIG. 23 is a timing chart of a motor drive pulse Pc output from a third drive pulse forming circuit 223.

24 is a timing chart of a motor drive pulse Pd output from a fourth drive pulse forming circuit 224. FIG.

FIG. 25 shows a motor clock control circuit 226, 227, 2
FIG. 28 is a block diagram showing a specific configuration of 28 and 229.

FIG. 26 is an external view of a completed multifunctional electronic timepiece of the present embodiment.

FIG. 27 is a flowchart of a normal time mode.

FIG. 28 is a flowchart of a normal time mode.

FIG. 29 is a flowchart of a stopwatch function.

FIG. 30 is a flowchart of a stopwatch function.

FIG. 31 is a chart showing a fan-shaped hand movement state.

FIG. 32 is a flowchart of a timer function.

FIG. 33 is a flowchart of a timer function.

FIG. 34 is a flowchart of a timer function.

FIG. 35 is a flowchart of an alarm set function.

FIG. 36 is a flowchart of a method for determining a hand movement direction of fast-forward of each hand when a mode is switched.

FIG. 37 is a flowchart of a hand movement method for each motor.

FIG. 38 is a flowchart of a hand movement method for each motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground plate 2 Battery 28 Battery plus terminal 29 Wheel train receiver 30 Circuit block 104 Mode correction axle 105 Mode contact spring 106 Mode display car 109 Mode display wheel holding plate

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenichi Okuhara 3-5-5 Yamato, Suwa-shi, Nagano Seiko Epson Corporation (56) References JP-A-55-7662 (JP, A) JP-A Sho 60-70390 (JP, A) JP-A-59-56185 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G04C 3/00 G04C 3/14 G04F 7/04 G04F 8 / 02 G04B 19/04 G04B 19/24

Claims (12)

(57) [Claims] 1. A step motor A for driving an hour / minute hand disposed at the center of a timepiece, a step motor B for driving a center hand disposed coaxially with the hour / minute hand, and a distance from the center of the timepiece. Function display means disposed at a position where the function of the hour and minute hands and the center hand is switched by rotating the winding stem, and the function display means displays the function display means by the function switching means. A multi-function electronic timepiece wherein the contents are switched and the hour and minute hands and the center hand perform functional operations corresponding to the displayed contents. 2. The chronograph hand according to claim 1, further comprising a chronograph hand arranged at a position deviated from a center of the watch body, wherein a unit of measurement of the chronograph hand is minute compared to a unit of measurement of the center hand. A multi-function electronic timepiece characterized in that the step motor (B) drives the chronograph hands and the center hands via a wheel train. 3. The apparatus according to claim 1, wherein a zero position setting function is provided by which the function switching means can set a hand position reference at the time of starting the movement of the hour and minute hands and the center hand. Multifunctional electronic clock. 4. The method according to claim 1, wherein when the function switching means switches to another function different from the conventional one,
The fast-forward hand movement direction of the hour / minute hand or the center hand is
The multifunction electronic timepiece is operated in a direction in which the time is the shortest time until it is moved to the position where the different function is displayed. 5. The hour / minute hand according to any one of claims 1 to 4, wherein the hour / minute hand displays hours and minutes of a normal time in a state where the function switching unit is switched to a normal time display state.
A multifunction timepiece, wherein the center hand displays a date. 6. The timepiece according to claim 1, wherein the function switching means switches the stopwatch function to a stopwatch function.
A multi-function electronic timepiece characterized in that measurement of a stopwatch is started and measurement of a stopwatch is reset by a switch and a B switch. 7. The multifunction electronic timepiece according to claim 1, further comprising a 24-hour hand linked to the operation of the hour and minute hands. 8. The hour / minute hand according to claim 1, wherein the function display means displays a normal time and minute when the function time display is in the normal time display state, and the stopwatch measurement time and minute display when the function display means is a stopwatch function state. A multifunction electronic timepiece wherein the function display means displays an alarm set time, hour, and minute when an alarm set function state is set. 9. A system comprising: means for forcibly setting a core CPU, a frequency dividing circuit, and other peripheral circuits to an initial state by hardware; and one or more step motors, and immediately after setting to the initial state. A multi-function electronic timepiece is characterized in that a signal pulse that can be driven is output to each step motor, and the number of signal pulses that can be driven for each step motor has the same number of reverse drive pulses and forward drive pulses. . 10. The multifunction electronic timepiece according to claim 1, wherein, after the switch operation, the stopwatch operation is operated for a predetermined time or more after the switch operation, and the chronograph hand performs a sector-shaped hand movement forward and backward with the 12 o'clock position symmetrical. . 11. In the timer function, when the timer is operated by a switch operation from a state in which the timer setting time is set beyond a predetermined time, the chronograph hand is symmetrical at the 12 o'clock position and has a fan-shaped hand movement back and forth. Is performed up to the predetermined time. 12. A multi-function electronic timepiece having a center second hand superimposed on an hour and minute hand, wherein the center second hand has a sharp second indicating shape at one end according to a function, and the other end has a pointer function as a calendar display hand. A multifunctional electronic timepiece characterized by a crescent shape.