JPH01242987A - Combined display electronic timepiece - Google Patents

Abstract

PURPOSE:To shield a digital display device provided on a dial without impairing the case design by opening and closing display windows of the digital display device by beautiful cap members. CONSTITUTION:A 1st pulse motor 21 for hand driving and a 2nd pulse motor 22 for disk driving are provided on the plate 20. The pulse motor 21 drives the hour hand 3 and the minute hand 4 via wheel trains 23, 24, 25. The pulse motor 22 drives a disk 7 via wheel trains 26, 27, 28. Three pieces of the window parts 7a are provided at every 120 deg. with the disposing position of the digital display device 6 as a reference to the disk 7 and further, 3 pieces of the cap parts 7b are provided to the intermediate positions of the respective window parts 7a. The functions as name plates printed with the timepiece manufacturer's name are provided as well to the cap parts 7b. The pulse motor 22 operates to rotate the disk 7 at every 60 deg. at every operation of a push button 9. The alternate operations to switch the display face of the display device 6 to the display state by the window parts 7a and the shielding state by the cap members 7b are thus executed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a composite display timepiece with improved design.

[Conventional technology]

Traditionally, there have been two types of electronic watches: pointer display type electronic watches with excellent design, and digital display type electronic watches with excellent multifunctionality. Display clocks have been commercialized and are becoming popular. This composite display watch has a display window with a digital display placed on a part of the dial of the pointer display device, so that the time display, which is the main function of the watch, can be performed using the well-designed pointer display device. The digital display device displays additional functions such as a calendar and an alarm.

[Problem to be solved by the invention]

However, although the above-mentioned composite display clock has been highly evaluated in terms of functionality, in terms of design, it is still dark in color within the display window where one character is temporarily formed compared to electronic watches with pointer display. Since the digital display device made of liquid crystal cells is visible, the overall image is dark and lacks elegance, making it difficult to use in high-end products.

Therefore, the reality is that composite display watches are currently only used in watches that are of intermediate quality or lower.

However, a structure in which a cover with a window is rotatably attached to the case of a composite display watch, and the cover is rotated to cover the digital display device except when necessary, was developed in 1983. It is disclosed in Japanese Patent No. 30223.

However, although the cover attached to the outside of the case as in the above configuration can certainly shield the digital display device if necessary, on the other hand, it significantly spoils the design of the case, and is far from the image of a luxury product. It becomes a thing.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and provide a composite display timepiece in which the digital display device can be shielded without compromising the case design.

[Means to solve the problem]

The gist of the present invention to achieve the above object is to have a reference oscillation circuit, a clock signal generation circuit, a motor drive circuit, a pulse motor, and a pointer display device driven by the pulse motor, and to be formed on a dial. A composite display electronic timepiece equipped with an electro-optical display device in a light display window is characterized in that a display window portion of the electro-optic display device is provided with an openable and closable lid body, and further It is characterized by having a pulse motor for opening and closing the lid.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

3 and 4 are plan views of the electronic timepiece of the present invention,
FIG. 3 shows a pointer display state, and FIG. 4 shows a composite display state.

Reference numeral 1 designates an electronic watch, and the display section 2 has a pointer display device including an hour hand 3 and a minute hand 4, and a digital display device 6 disposed in a display window 5a formed on a dial plate 5. The window 5a is configured to be opened and closed by a disk 7 that constitutes a lid, which is a feature of the present invention.

Reference numeral 8 indicates IJ, -Z, which corrects the digital display device 6 in the first pull-out position, and corrects the pointer display device in the second pull-out position. Reference numeral 9 denotes a push button, which rotates the disk 7 by a certain angle for each operation as described later, and closes the lid which also serves as a nameplate on the display window 5a as shown in FIG. 3, or as shown in FIG. 4. (Open the lid and display on the digital display device 6.

1 and 2 are a plan view and a partial sectional view of the module of the electronic timepiece 1 with the case and dial 5 removed. The ground plate 20 is the first for guidelines for guideline drive, and the first pulse motor 22 for disk driving is provided, and the first pulse motor 21 is a well -known ring column 26.24.
By driving the hour hand 6 and minute hand 4 via the dial 25, time hands are displayed. Further, the second pulse motor 22 is configured to drive the disc 7 via a wheel train 26, 27, 28. Three windows 7a are provided on the disk 7 at intervals of 120 degrees based on the position of the digital display device 6, and each window 7a is provided at intervals of 120 degrees.
Three lid portions 7b are provided in the middle position of a, and these lid portions 7b also function as a nameplate on which the manufacturer's name of the watch is printed in English letters.

That is, the disk 7 has a window 7a and a lid 7 at 60 degree intervals.
b are provided alternately, and each time the push button 9 is operated, the second pulse motor 22 is operated to move the disc 7.
By rotating 60 degrees at a time, Figures 3 and 4
As shown in the figure, the display surface of the digital display device 6 is
An alternating operation is performed to switch between the display state by a and the shielding state by the lid 7b.

Next, FIG. 2 is a sectional view showing the relationship between the second pulse motor 22, the disc 7, and the digital display device 6. As shown in FIG. 22a and 22b are the coil and rotor of the second pulse motor 22, and the toothed portion 7C provided on the inner periphery of the disc 7 is driven from the rotor 22b via the wheel train 26, 27, 28. has been done. 60 and 61 are well-known supporting members, which support the second pulse motor and each wheel train together with the base plate 20.

Further, the digital display device 6 includes cell support members 34 and 65.
The display surface is supported by the dial 5.
It is located in the display window 5a provided in the. Then, as shown in FIG. 2, the window 7a of the disc 7 coincides with the display window 5a of the dial 5, resulting in a composite display state in which the digital display device 6 is visible.

FIG. 5 is a block diagram showing the circuit configuration of the electronic timepiece of the present invention. 40 is a reference generating circuit, 41 is a frequency dividing circuit, 42 is a first waveform shaping circuit, and 43 is a first driving circuit, and the first waveform shaping circuit 42 generates the time information signal P, and the first driving circuit By driving the first pulse motor 21 via the dial 46, the hour hand 6 and minute hand 4 of the display section 2 display the time. 44 is a digital information generation circuit;
5 is a decoder/driver, which displays digital information on the digital display device 6;

46 is a second waveform shaping circuit, 47 is a constant pulse generation circuit,
48 is a second drive circuit, and the second waveform shaping circuit 46
generates the disk drive signal P2 and operates the constant pulse generation circuit 47.
supply to. And the constant pulse generation circuit 47 is activated by the push button 9? ! Second drive circuit 48
The disk 7 is rotated by 60 degrees by driving the second pulse motor 22 via the second pulse motor 22 .

Next, the operation of the electronic timepiece 1 having the above configuration will be explained. Normally, when carried, the display window 5a of the dial 5 is shielded by the lid 7b of the disc 7 as shown in Figure 3. In this state, the lid 7b is the name plate. Therefore, it can be carried around as an electronic watch with an excellent design and a pointer display policy.

When the push button 9 is operated once from this state, the switch 9a shown in FIG. 5 is turned on, and the constant pulse generating circuit 47 outputs a disk drive signal P corresponding to the rotation of the disk 7060 degrees. The second pulse motor 22 shown in FIG.
The disk 7 is rotated by 60 degrees via 28, and the window 7a is moved onto the display surface of the digital display device 6. As a result, as shown in FIG. 2 (the display window 5a and the window portion 7a coincide with each other, the display is switched to the composite display state shown in FIG. 4).

Thereafter, in the same manner, each time the push button 9 is operated, the pointer display state shown in FIG. 3 and the composite display state shown in FIG. 4 are alternately switched.

In this embodiment, the second pulse motor for driving the disc is provided, but it is also possible to use the first pulse motor also.

〔Effect of the invention〕

As described above, according to the present invention, by opening and closing the display window of the digital display device provided on the dial using a beautiful lid member, the design when normally carried is almost comparable to that of an electronic watch with a pointer display system. Moreover, it is possible to have the functionality of a composite display timepiece, which has a great effect on making the composite display timepiece more sophisticated.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings all show embodiments of the electronic timepiece according to the present invention, and FIGS. 1 and 2 are a plan view and a partial sectional view of the module with the case and dial removed; 3 and 4 are plan views showing the external appearance, and FIG. 5 is a block diagram showing the circuit configuration. 1...Electronic clock, 2...Display section, 7...Disc plate,
21...First pulse motor, first each 7・'/・. 27 28 7b 2423 To Kikuchi Figure 3 4z

Claims (2)

[Claims] (1) It has a reference oscillation circuit, a timing signal generation circuit, a motor drive circuit, a pulse motor, and a pointer display device driven by the pulse motor, and an electro-optical display device in the display window formed on the dial. 1. A composite display electronic timepiece comprising: a display window portion of the electro-optical display device provided with an openable/closable lid body. (2) A composite display electronic timepiece, wherein the lid body according to claim 1 is opened and closed by a pulse motor.