JP2820418B2 - Pointer clock - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pointer-type timepiece that displays hands, and more particularly, to a technique for effectively using a limited space on a dial of a pointer-type timepiece.

[Conventional technology]

The timepieces have a long history and existed mechanically before electronic control of the hands. A scale or symbol (letter / number) that serves as a guide for small hands for additional functions is provided on the main dial on which a scale or a number has been engraved to indicate the time including the hour and minute since the mechanical era. There was also a hand-held watch with an engraved sub-dial. In recent years, various functions have been added to a pointer-type timepiece that electronically controls the hands in the same manner as a digital display timepiece, and multifunction has been advanced and realized. As a product already commercialized, there are a pointer-type clock with an alarm function, a pointer-type clock with a timer function, and a pointer-type clock with a chrono function.

FIGS. 2, 3, and 4 show an example of a pointer-type timepiece having a chrono function as an example of a pointer-type timepiece in which a sub-type dial is formed on a main dial based on a conventional dial space utilization technique. This will be described with reference to FIG.

This conventional example is a pointer-type watch with a chronograph function that displays chronograph 1/10 second, chronograph second, chronograph minute and chronograph hour.Chronograph second hand and chronograph minute hand have chronograph second hand and chronograph minute hand respectively. The two functions, chronograph 1/10 second and chronograph, are switched by one hand. The pointer used in this switching is such that the chronograph 1/10 second is displayed in the mode in which the chronograph measurement time is less than 60 minutes, and the chronograph time is displayed in the mode in which the chronograph measurement time is 60 minutes or more.

In addition, the display returns to 0 minutes 0 seconds 0 again at the next second of 9 hours 59 minutes 59 seconds when the chronograph measurement time is 9 hours 59 minutes 59 seconds, but at that time the display function of the hand is switched again and the original chronograph 1/10 second display Return to And the chronograph measurement time after the chrono stop is 60
A mode hand is provided to allow the user to correctly determine whether to read the scale as a chronograph 1/10 second in a mode of less than a minute or as a chronograph in a mode of 60 minutes or more.

First, FIG. 2 and FIG. 3 will be described. FIG. 2 is a view showing a dial and hands as a face of a conventional pointer-type timepiece, and FIG. 3 is an enlarged view of a part thereof. Hour hand 91, minute hand 92, second hand 9 for normal time display on main dial 900
3 is attached to the center, around which as small hands a chrono second hand 94 for chrono second display, a chrono minute hand 95 for chrono minute display, a chronograph 1/10 second and a switching hand 96 for chrono hour display,
A mode hand 97 for mode display is attached, and a second sub dial 940 for displaying chronograph seconds, a third sub dial 950 for displaying chronograph minutes, and a chronograph 1/10 around each small hand.
A first sub dial 960 for displaying seconds and chronographs and a fourth sub dial 970 for displaying modes are arranged.

As shown in an enlarged manner in FIG. 3, a first sub-dial 960 provided around the main dial 900 corresponding to the switching hand 96 has a unit of chronograph 1/10 second on the outermost side. Chrono 1/10 second numeral 98, which is a symbol required for reading, is arranged, and inside it is a chrono hour numeral 99, which is a symbol required to read the chrono unit, and the innermost chronograph A scale 90 is provided for both 1/10 second and chrono.

FIG. 4 is a circuit block diagram of a conventional pointer-type timepiece having a chronograph function based on electronic control. The same elements as those in FIG. 2 are denoted by the same reference numerals and description thereof is omitted. In FIG. 4, reference numeral 1 denotes a time reference source, and a time reference signal P ₁ (32768 Hz)
Occurs. Reference numeral 2 denotes a time dividing circuit, which is a time reference signal from the time reference source 1 for generating a reference for normal time.
And outputs the divider than become normal time for dividing the signal P ₂ signal groups for producing period and pulse width of the pulse for driving the 1Hz multiple stages P ₁ as an input. 11 is a standard time signal generating circuit, usually a time pulse P for normal time 1Hz based on a predetermined time for divided signal P ₂ from the time for dividing circuit 2
Outputs ₁₁ . 16 is a first driving circuit, usually time driving signal P for the normal time driving on the basis of the standard time pulse P ₁₁
Outputs ₁₆ . The Said standard time driving signal P ₁₆ 1 of motor 2
By supplying the second hand 93 to the first motor 21, the second hand 93 is driven to communicate with the second hand 93 and the minute hand 92 and the hour hand 91 which are mechanically interlocked with the second hand 93 and a wheel train mechanism to display a normal time display. Do.

Reference numeral 4 denotes a switch circuit, which includes a start / stop switch 41, a chattering prevention circuit 42, and a toggle type flip-flop 43 (operated by a rising signal to a T input terminal: hereinafter referred to as T-FF). Start-stop switch 41 is linked with the external operating member, and outputs a start-stop signal P ₄₁ each time the start operation and stop operation of the chronograph. Chattering preventing circuit 42 receives as input the start-stop signal P _41, and outputs a one-shot signal P ₄₂ which eliminated the mechanical chattering of the start-stop switch 41 for each start operation and stop operation of the chronograph. The T input terminal of the T-FF 43 the one-shot signal P ₄₂ is input, Q output terminal from the "L" level at the chrono stop state, also Chrono in start state "H" level of the switching signal P ₄ Is output. Then, the switch signal P ₄ is level for each start operation and stop operation of the chronograph reversed.

Reference numeral 30 denotes a chronograph circuit, which includes a chronograph frequency dividing circuit 3 and INV3.
1 and data type flip-flop 32 (hereinafter DF)
F). The chronograph frequency dividing circuit 3 is composed of a plurality of stages of frequency dividers to create a chronograph reference. Wherein the input terminal I of the chrono for divider 3 time reference signal P ₁ from the time reference source 1 is input, a reset terminal R is controlled by the chronograph for division permission signal P ₃₂ from the D-FF 32 You. That, "H" chrono for division level permission signal P ₃₂ to based divider-counter for dividing the signal P ₃ is not performed in the dividing operation is reset by the chrono stop state and 16Hz division signal P ₃₄ Is stopped, and in the chrono start state, the frequency division operation is performed based on the “L” level chronograph frequency division enable signal P ₃₂ , for chrono second, chrono division,
Chronograph for 1/10 second signal group of the chrono for dividing the signal P ₃ for creating a pulse period and pulse width for the time Chrono and 16
Hz frequency-divided signal P ₃₄ outputs. The D-FF 32 reads the data information of the D input terminal at the rising timing of the signal to the T input terminal. The switch signal is input to the D input terminal.
Inverted signal P ₄ is input, the T input terminal the 16Hz frequency division signal P ₃₄ is inputted to the R input terminal of the reset terminal said switching signal P ₄ is input.

Reference numeral 12 denotes a chronograph second signal generation circuit. In the chronograph start state, a 1 Hz chronograph second pulse P for a chronograph second based on a predetermined chronograph division signal P3 from the chronograph division circuit ₃ is used.
Outputs ₁₂ . 17 is a second drive circuit, the chronograph start state and outputs a chronograph seconds driving signal P ₁₇ for chronograph seconds driven based on the chronograph seconds pulse P _12. The chronosecond drive signal P ₁₇ is supplied to the second motor 22 so that
The chronograph second hand 94, which is linked to the second motor 22, is driven to display a chronograph second.

13 is a chronograph minute signal generating circuit, a chronograph start state outputs chronograph minute pulse P ₁₃ for chronograph minute at 1 minute intervals based on a predetermined chronograph for dividing the signal P ₃ from the chronograph for dividing circuit 3 I do. 18 is a third drive circuit, the chronograph start state and outputs a chronograph minute drive signals P ₁₈ for chronograph minute drive based on the chronograph minute pulse P _13. By the said chronograph minute driving signal P ₁₈ which is supplied to the third motor 23, performs chronograph minute display by driving the chronograph minute hand 95 is linked to the third motor 23.

14 is a 1/10 second signal generating circuit chronograph, the chronograph start state Chrono for 10Hz chronograph 1/10 second of based on a predetermined chronograph for dividing the signal P ₃ from the chronograph for dividing circuit 3
And it outputs a one-tenth of a second pulse P _14. 15 is a chronograph time signal generating circuit, a chronograph start state outputs chronograph time pulse P ₁₅ for the time-counter at 1 hour period based on a predetermined chronograph for dividing the signal P ₃ from the chronograph for dividing circuit 3 I do.

Reference numeral 5 denotes a mode control circuit which reads the data information of the D input terminal at the rising timing of the signal to the T input terminal: FF).
60 binary counting unit 51 outputs the chronograph minute signal generating circuit 13 chronograph minute pulse P ₁₃ "60" chrono 60 minutes signal P ₅₁ of the one-shot when counting based on from. That is, the chronograph 60-minute signal _P51 is output every 60 minutes in the chronograph start state. Decimal counting section 52 outputs "10" Chrono 10 hours signals P ₅₂ of the one-shot when counting based on the chronograph time pulse P ₁₅ from the chronograph time signal generating circuit 15. That is, the chronograph 10 hours signals P ₅₂ has chronograph measurement time return the display back to 0 minutes 0 seconds 0 when chronograph measurement time becomes chrono 10 hours after one second next 9 hours 59 minutes 59 seconds
It manages the timing of returning to the mode of less than 60 minutes. The D-FF 53 has a D input terminal connected to the V _dd terminal, a T input terminal to which the chrono 60-minute signal P ₅₁ is input, an R input terminal to which the chrono 10-hour signal P ₅₂ is input, and outputs the mode switching signal P ₅ from the Q output terminal.

In other words, starting the chrono,
The chrono 60-minute signal _P51 and the chrono 10
Time signal P ₅₂ is the mode switching signal P ₅ not output the initial level of "L" level, D-FF 53 chronograph measurement time is output when chrono 60 minutes signal P ₅₁ reaches 60 minutes "H" level the read mode switching signal P ₅ becomes "L" level to the "H" level, then the chronograph 60 minutes signal P ₅₁ to every 60 minutes until it is outputted chronograph counting time it becomes 10 hours mode switching signal P ₅ remains at "H" level. When the chronograph counting time reaches 10 hours, the chrono 10-hour signal P
₅₂ and the chrono 60-minute signal P ₅₁ are output simultaneously,
-FF53 becomes "L" level from the always prevails reset mode switching signal P ₅ is "H" level for the rising operation. Hereinafter, the mode switching signal P ₅ is this repetition.

Reference numeral 7 denotes a selector. When the input to the C terminal is at "L" level, the A input is output from the Q terminal, and when the input to the C terminal is at "H" level, the B input is output from the Q terminal. The chronograph 1/10 second pulse P ₁₄ from the chronograph 1/10 second signal generation circuit 14 is input to the input terminal A of the selector 7, and the chronograph pulse output from the chronograph signal generation circuit 15 is input to the input terminal B. P ₁₅ is inputted, further control terminal C is controlled by a mode switching signal P ₅ from the mode control circuit 5, Chrono mode of chronograph measurement time is less than 60 minutes 1 /
Is output 10 second pulses P _14, also in the 60 minute or more mode is output chronograph time pulse P _15.

Reference numeral 19 denotes a fourth drive circuit, which outputs a common drive signal P ₁₉ for chronograph 1/10 second and chronograph drive based on the output signal from the selector 7. The common drive signal P ₁₉ is supplied to the fourth motor 24, thereby driving the switching hand 96 linked to the fourth motor 24.

6 is a mode signal generating circuit inputs the mode switching signal P ₅ from the mode control circuit 5 and a predetermined chrono for dividing the signal P ₃ from the chronograph for dividing circuit 3, the mode switching signal P ₅ outputs a mode pulse P ₆ for mode display in accordance with the rise timing and the fall timing of the. That is, every time the mode switches, the mode pulse
P ₆ is output.

20 is a fifth drive circuit, and outputs the mode display driving signal P ₂₀ for mode display driving based on the mode pulse P _6. By the said mode display drive signal P ₂₀ which is supplied to the fifth motor 25, by driving the mode hand 97 which is linked to the fifth motor 25, the mode display.

Then, the chronograph measuring operation is performed based on the operation of the start / stop switch 41.

As described above, in the conventional pointer-type timepiece, the main dial
First sub dial 960, second sub dial 94 formed on 900
0, the third sub dial 950, and the fourth sub dial 970 are all positioned at the center of the main dial 900 which is the center of rotation of the hands for displaying the time of the hour hand 91, minute hand 92 and second hand 93. It is formed in the region not including.

[Problems to be solved by the invention]

As described above, in the conventional pointer-type timepiece, the first sub-dial 96
The radii of the main dial 900 are the triple 98 with the numeral 98 for the chronograph 1/10 second, the numeral 99 for the chronograph hour, and the scale 90 that is shared for the chronograph 1/10 second and the chronograph. Since they are arranged in a narrower area, the symbols (numbers in this case) are smaller and are difficult to read. In particular, the main dial 900 for pointer-type watches
Many symbols (numerals and letters, etc.) which are so small that they are arranged in an area narrower than the radius of the main dial 900 are extremely small, so that when reading the position of the pointer, there is a problem that it may be wrong.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a pointer-type timepiece that is easy to read even if a large number of symbols are arranged on a sub dial formed on a main dial.

[Means for solving the problem]

In order to achieve the above object, the present invention has the following configurations.

When the main dial and the center of the main dial are the center of rotation
A main hand for displaying a time including minutes, a first motor for driving the main hand, a sub dial formed on the main dial, and a rotation center of the main hand in the sub dial. In a pointer-type timepiece provided with a sub-hand having a different rotation center, the sub dial is formed in a region including the rotation center of the main hand, and the rotation radius of the sub-hand is determined by the rotation center of the main hand. The auxiliary pointer is formed so as to be avoidable, and is driven by a second motor provided separately from the first motor.

In addition, it has a second sub-dial different from the sub-dial,
The second sub dial is formed in a region not including the rotation center of the main pointer.

〔Example〕

FIG. 1 shows a pointer-type timepiece having a chrono function as an example of a pointer-type timepiece based on the technology of the present invention which makes effective use of the space on the main dial.

The function of the pointer-type timepiece shown in FIG. 1 is exactly the same as that of the conventional pointer-type timepiece having the chronograph function shown in FIG. That is, the circuit block diagram shown in FIG. 4 is a circuit block diagram shared with the present embodiment, and in the case of the present embodiment, the first motor 21, the second motor 22, the third motor 23, Each of the fourth motor 24 and the fifth motor 25 has a second hand 93, a chrono second hand 94, and a chrono minute hand 9 shown in FIG.
5. The respective hands of the switching hand 66 and the mode hand 97 are driven.

FIG. 1 is a diagram showing a dial and a hand which are the face of a hand-held timepiece according to the present invention.

In FIG. 1, the same elements as those in FIG. 2 are given the same numbers, and even if the positions and sizes of the sub-dial and the hands are different, essentially the same elements are also given the same numbers. doing.

Referring to FIG. 1, a description will be given of a portion relating to a technology for effectively utilizing a space on a dial of a pointer type timepiece according to the present invention. The main dial is reduced to the end of the main dial 600, and the second dial 940, the third sub dial 950, and the fourth sub dial 970 are arranged, and the main dial is moved to a space where the space is opened. 600
The first sub-dial 660 is largely disposed beyond the center of rotation of the hour hand 91, minute hand 92 and second hand 93, which are the centers of the first and second hands. When the switching hand 66, which is the second hand corresponding to the first sub dial 660, rotates and passes through the center of the main dial 600, the rotation of the hour hand 91, the minute hand 92, and the second hand 93, which are the first hands, is performed. Since the switching needle 66 is formed so as not to reach the center, there is no problem that the pointer hits during operation. Of course, the switching hand 66 is located closer to the dial in cross section than the hour hand 61, minute hand 62, and second hand 63.
The turning radius of the switching hand 66 is shorter than the radius of the first sub dial 660 and does not reach the chronograph 1/10 second numeral 68 and the chronograph hour numeral 69 on the first sub dial 660, but is shared. Scale 60
Corresponds with the chronograph 1/10 second numeral 68 and the chronograph hour numeral 69, and there is no adverse effect.

As described above, the area of the first sub-dial 660 in which the chronograph 1/10 second numeral 68, the chronograph hour numeral 69, and the common scale 60 are arranged in three layers can be widened.

Further, in this embodiment, the description has been made of the pointer type timepiece driven by the motor based on the electronic control. However, the invention is also applicable to a mechanical type pointer type timepiece driven by the mainspring.

〔The invention's effect〕

According to the present invention, the area of the sub dial formed on the main dial is expanded to include the center of rotation of the first hand for displaying the time, that is, the center of the main dial, thereby increasing the sub dial. Even if a lot of symbols have to be arranged inside, it can be read correctly because the symbols can be enlarged.

In addition, the present invention not only makes it easier to read a large number of symbols in the sub-dial by making effective use of the limited space on the dial in the hand-held timepiece, but also makes the design uninteresting and interesting. It is possible to expand the design variations, and the product power is also improved in the effect of improving the design.

[Brief description of the drawings]

FIG. 1 is a plan view of a dial and hands of a pointer-type timepiece according to an embodiment of the present invention, FIG. 2 is a plan view of a dial and hands of a pointer-type timepiece as an example of the related art, and FIG. FIG. 2 is a partially enlarged plan view, and FIG. 4 is a circuit block diagram common to the embodiment of FIG. 1 and the conventional example of FIG. 600, 900… Main dial, 91… Hour hand, 92… Minute hand, 93… Second hand, 660, 960… First sub dial, 66, 96… Switching hand.

Continuation of front page (58) Fields investigated (Int.Cl. ⁶ , DB name) G04B 19/08 G04C 3/00 G04F 8/02

Claims (2)

(57) [Claims] 1. A main dial, a main hand for displaying a time including an hour and minute about a center of the main dial as a rotation center, a first motor for driving the main hand, and the main dial In a hand-held timepiece provided with a sub dial formed thereon, and a sub-hand having a rotation center different from the rotation center of the main hand in the sub-diameter, the sub-diameter is a part of the main hand. The auxiliary pointer is formed in a region including the rotation center, the rotation radius of the auxiliary pointer is formed so as to avoid the rotation center of the main pointer, and the auxiliary pointer is driven by a second motor provided separately from the first motor. Pointer-type watch characterized by being. 2. The apparatus according to claim 1, further comprising a second sub dial separate from said sub dial, wherein said second sub dial is formed in a region not including a center of rotation of said main hands. The pointer-type timepiece according to claim 1.