JP2958977B2 - Electronic clock - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an electronic timepiece, and in particular, to an analog display unit,
The present invention relates to an electronic timepiece including a digital display unit and a switch unit.

[Prior art and its problems] An electronic timepiece has an analog display unit for indicating time by hands, a digital display unit for displaying information such as time by an optical display element, and a switch unit in which a plurality of key switches are arranged. Some are provided with

However, in such a conventional electronic timepiece, since the analog display unit, the digital display unit, and the switch unit are arranged on the same plane, each unit is mutually restricted, and each arrangement area is reduced. There has been a problem that the display by the analog display unit and the digital display unit becomes difficult to see, the switch unit becomes difficult to operate, and the design is restricted.

Therefore, the present applicant has attached an upper case to the 12 o'clock side of the lower case provided with a switch unit on the upper surface so as to be openable and closable, and an analog display unit on the upper surface side and a digital display unit on the lower surface side. We filed an application for an electronic timepiece having an electronic circuit unit (Japanese Patent Application No. 63-226576).

In the electronic timepiece according to the earlier application, an analog display unit,
Since the digital display unit and the switch unit are arranged on different surfaces, each unit is not restricted by each other, and each arrangement area can be sufficiently taken up, and the design is not restricted. can do.

By the way, in the electronic timepiece according to the earlier application, the upper case is attached to the 12 o'clock side of the lower case so as to be openable and closable, so that the switch portion of the lower case is electrically connected to the electronic circuit portion in the upper case. Inserting one end of the flexible sheet into the upper case from the openable and closable mounting part side of the upper case, and connecting to the connection terminal provided at the 12 o'clock end of the circuit board constituting the electronic circuit section become.

However, in a general digital electronic timepiece, connection terminals are provided in a horizontal line at 12 o'clock side and 6 o'clock side of the back surface of a liquid crystal display panel constituting a digital display portion, and are opposed to these connection terminals. Connection terminals are provided on the upper surface of the circuit board, and the opposed connection terminals are electrically connected to each other via each square-bar-shaped interconnector, and between the two interconnectors to reduce the overall thickness and the like. It has a structure in which an LSI required for a clock function and the like is provided on the upper surface of the circuit board.

When such a structure is adopted in the electronic timepiece according to the earlier application, a wiring pattern for connecting the LSI and the connection terminal for connecting the flexible sheet provided at the 12 o'clock end of the circuit board is used. Therefore, the connection terminals for connecting the liquid crystal display panel on the 12 o'clock side and the electronic components such as the battery and the crystal oscillator are provided so as to avoid the wiring pattern, so that the wiring pattern becomes complicated, the wiring density increases, and the wiring pattern is formed. Is extremely difficult. In addition, if the circuit board is enlarged, the wiring pattern can be easily formed. However, this causes another problem that the electronic timepiece becomes large.

[Object of the Invention] The present invention has been made in view of the above circumstances,
An object of the present invention is to provide an electronic timepiece in which a wiring pattern can be easily formed without increasing the size of a circuit board.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an upper case in which an analog display section is provided on the upper side, a digital display section is provided on the lower side, and a circuit board is provided therein, and a sheet switch is provided on the upper side. A flexible sheet for electrically connecting a sheet switch on the lower case and a circuit board in the upper case is openably and closably attached to the 3 o'clock or 9 o'clock side of the lower case provided. The main point is that it is derived from the mounting portion side and inserted into the upper case from the openable and closable mounting portion side of the upper case.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.

First, FIG. 3 and FIG. 4 show a normal state of the electronic timepiece.

In this electronic timepiece, the upper case 2 is attached to the lower case 1 at 9 o'clock by a hinge pin 3 so as to be openable and closable, and the upper case 2 can be locked in a closed state by a lock mechanism (not shown). .

A circuit board 4 is provided at a central portion in the upper case 2,
An analog display unit 5 is provided on the upper surface side of the circuit board 4, and a digital display unit 6 is provided on the lower surface side. The circuit board 4 includes various electronic components (not shown here) such as a crystal oscillator and an LSI necessary for a clock function, a calculation function, a storage function, and the like. 1
It operates by receiving power supply from the controller (see the figure) and controls the operations of the analog display unit 5 and the digital display unit 6.

The analog display unit 5 can indicate and display the time in an analog manner using the hands 11 or the like. That is, the analog display unit 5 includes an analog movement 13 provided in an upper housing 12 provided on the circuit board 4, and two pointer shafts 14 of the analog movement 13.
Penetrates through the dial 15 provided on the upper housing 12 and projects above the dial 15. The two hands 11 of the hour hand and the minute hand are attached to the two projected hand shafts 14, respectively. When the stepping motor (not shown here) of the analog movement 13 is driven by the drive signal from 4, the hands 11 are respectively moved through the wheel train mechanism (not shown here) of the analog movement 13, whereby The time is displayed as an instruction. On the upper surface of the upper case 2, a glass 16 for protecting the analog display unit 5 is provided. On the 3 o'clock side of the upper case 2, a crown 17 for adjusting the time is provided.

The digital display unit 6 displays information such as time on the liquid crystal display panel 21.
(See FIG. 1), it is possible to perform electro-optical display. That is, in the digital display section 6, a liquid crystal display panel 21 is provided in a lower housing 22 provided below the circuit board 4, and the liquid crystal display panel 21 is electrically connected to the circuit board 4 by two interconnectors (not shown). When a drive signal is supplied from the circuit board 4 and the liquid crystal display panel 21 performs a display operation, various information such as a time, a memo, a schedule, and a calculation result is displayed. The display surface of the liquid crystal display panel 21 is visible through an opening 25 (see FIG. 1) of a decorative plate 24 provided on the lower surface of the upper case 2 via a packing 23.

A sheet switch 31 is provided on the upper surface of the lower case 1. The seat switch 31 is an input device in which key switches are arranged, and includes a ten key, a function key, a mode key, and the like. The mode key is used to switch the execution mode of the digital display unit 6 to a time display mode, a memo mode, a schedule mode, a calculation mode, and the like every time the key is pressed. The sheet switch 31 is electrically connected to the circuit board 4 via a flexible sheet 32, as described later in detail.

In this electronic timepiece, in a normal case where the upper case 2 is closed, as shown in FIGS. 3 and 4, only the analog display section 5 is viewed, while the upper case 2 is opened toward the 9 o'clock direction. Then, as shown in FIGS. 1 and 2, the digital display section 6 is visually observed and the sheet switch 31 is exposed.

FIGS. 5 and 6 show the upper and lower sides of the upper housing 12 in the electronic timepiece.

An analog movement storage section 41 is formed in the center of the upper housing 12. The analog movement storage unit 41 stores the analog movement 13 including the step motor 42, the wheel train mechanism 43, and the like. A crystal oscillator housing section 44 and a battery housing section 45 are formed on the lower surface of the upper housing at 12 o'clock. The battery storage part 45 is provided with a battery electrode plate 46.

On the 9 o'clock side (the right side in FIG. 6) of the lower surface of the upper housing 12, as shown in FIG. 9, a flexible sheet connecting concave portion 51 is formed. In the flexible sheet connection concave portion 51, a linear rubber member storage portion 52 is formed. A rubber member 53 is stored in the rubber member storage part 52 with a part thereof protruding. The flexible sheet connection recesses 51 on both sides of the rubber member storage section 52 have screw holes formed at the distal end of a support post 54 embedded in the upper housing 12.
55 are exposed. Positioning bosses 56 are formed in the flexible sheet connection recesses 51 near these screw holes 55. These positioning bosses 56 are fitted with positioning holes 57 formed at one end of the flexible sheet 32. In this state, one end of the flexible sheet 32 is arranged in the flexible sheet connection concave portion 51 while being in contact with the protruding surface of the rubber member 53. Rubber member 53 on the upper surface of flexible sheet 32 in FIG. 9
A plurality of connection terminals 58 are provided at locations corresponding to. A screw insertion hole 59 is formed at a position of the two columns 54 of the flexible sheet 32 facing the screw hole 55. An insulating sheet 60 is provided on a portion of the flexible sheet 32 except for one end.
Is glued.

Next, FIG. 7 shows a state in which the circuit board 4 and the like are attached to the upper housing 12.

The circuit board 4 is provided with positioning holes 61 formed at four predetermined locations thereof (partly shown in FIG. 9), and positioning bosses 62 formed at two predetermined locations on the lower surface of the upper housing 12 and the positioning bosses 62 described above. It is arranged on the lower surface side of the upper housing 12 in a state fitted to the flexible sheet positioning boss 56. In this state, the crystal oscillator 63 provided on the upper surface (the lower surface in FIG. 7) of the circuit board 4
Is stored in the crystal oscillator storage section 44 of the first embodiment. An LSI 64 is provided at a predetermined location on the lower surface (the upper surface in FIG. 7) of the circuit board 4. On the lower surface of the circuit board 4 on the 12 o'clock side and the 6 o'clock side of the LSI 64, two sets of connection terminals 65 for connecting a liquid crystal display panel are provided in a horizontal line. These connection terminals 65 are electrically connected to the LSI 64 via lead electrodes (not shown).

Through holes 71 are formed at a plurality of locations on the circuit board 4 on the 9 o'clock side (the right side in FIG. 7) of the LSI 64. A through-hole electrode 72 connected to a through-hole is provided around the upper and lower sides of each of the through holes 71. The through-hole electrode 72 on the lower surface (the upper surface in FIG. 7) of the circuit board 4 is electrically connected to the LSI 64 via the lead electrode 73.
The through-hole electrode 72 on the upper surface (lower surface in FIG. 7) of the circuit board 4 is connected to the connection terminal 58 of the flexible sheet 32 of the circuit board 4 through the lead electrode 75 as shown in FIG.
Is electrically connected to a connection terminal 76 for connecting a flexible sheet provided at a position opposite to the connection terminal 76.

Screw insertion holes 81 (see FIG. 9) are formed at positions corresponding to the screw holes 55 of the two columns 54 of the circuit board 4. A metal reinforcing plate 82 is arranged at a predetermined position on the lower surface (the upper surface in FIGS. 7 and 9) of the circuit board 4. A positioning hole 83 is formed at a position corresponding to the two positioning bosses 56 of the metal reinforcing plate 82, and a screw insertion hole 84 is formed at a position corresponding to the screw hole 55 of the two columns 54. Then, with the metal reinforcing plate 82 having the positioning hole 83 fitted in the positioning boss 56, the upper housing 12 is screwed into the screw hole 54 through the screw insertion holes 84, 81 and 59. Attached to. In this state, the rubber member 53 is appropriately compressed (see FIG. 3), and by the repulsive force, the connection terminal 58 of the flexible sheet 32 is pressed against the connection terminal 76 of the circuit board 4, and the connection between the two connection terminals 58, 76. Are electrically connected.

Next, FIG. 8 shows a state in which a lower housing 22 and the like are further attached to the upper housing 12.

The lower housing 22 is located along the circuit board 4,
It is pressed by a main plate 93 attached to the upper housing 12 by a hook mechanism 91 and a screw 92. That is, similarly to the circuit board 4, the lower housing 22 has the positioning holes 94 (partially not shown) formed at predetermined four locations thereof fitted in the positioning bosses 56 and 62, and Is arranged on the lower surface side (the upper surface in FIG. 8). The base plate 93 is attached to the upper housing 12 by hook mechanisms 91 and screws 92 in a state where positioning holes 95 formed at two predetermined positions are fitted to the positioning bosses 56 and 62. The battery 7 is accommodated in the battery accommodating portion 45 of the upper housing 12 while being held down by the battery holding plate 96. The battery 7 includes the battery electrode plate 46 described above.
(See FIG. 7), and is electrically connected to the circuit board 4 via a battery electrode plate 97 formed integrally with the base plate 93.

On the 12 o'clock side and 6 o'clock side of the upper surface (the lower surface in FIG. 8) of the liquid crystal display panel 21 provided in the lower housing 12,
Two sets of connection terminals (not shown) are opposed to two sets of connection terminals 65 for connecting the liquid crystal display panel of the circuit board 4 shown in FIG.
Is provided. The opposing connection terminals are electrically connected to each other via respective square-bar-shaped interconnectors (not shown).

As described above, in this electronic timepiece, the upper case 2 in which the analog display unit 5 is provided on the upper surface, the digital display unit 6 is provided on the lower surface, and the circuit board 4 is provided therein, and the sheet switch 31 is provided on the upper surface. A seat switch 31 is attached to the lower case 1 at 9 o'clock side via a hinge pin 3 so as to be freely opened and closed.
The flexible sheet 32 for electrically connecting the circuit board 4 to the circuit board 4 is inserted into the upper case 2 from the hinge pin 3 side of the upper case 2, so that the connection for flexible sheet connection is provided at the 9 o'clock side of the circuit board 4. A terminal 76 can be provided. Therefore, the wiring patterns 72 and 7 for connecting the connection terminals 76 for connecting the flexible sheet and the LSI 64 are provided.
3 and 75 can be formed without interfering with the connection terminals 65 for connecting the liquid crystal display panel and the electronic components such as the battery 7 and the crystal unit 63, and thus the wiring pattern can be formed without increasing the size of the circuit board 4. Can be easily formed.

In the above embodiment, the upper case 2 is replaced with the lower case 1
Although it is mounted on the 9 o'clock side so as to be openable and closable, the present invention is not limited to this.

[Effects of the Invention] As described above, an electronic timepiece according to the present invention includes an upper case in which an analog display unit is provided on the upper surface side and a digital display unit provided on the lower surface side and a circuit board therein, and a sheet switch on the upper surface. A flexible sheet for electrically connecting the sheet switch on the lower case and the circuit board in the upper case is freely openable and closable on the 3 o'clock side or 9 o'clock side of the lower case provided with Since it is drawn out from the mounting portion side and inserted into the upper case from the openable and closable mounting portion side of the upper case, connection terminals for connecting a flexible sheet can be provided on the 3 o'clock side or 9 o'clock side of the circuit board. A predetermined wiring pattern that can be connected to the connection terminals for connecting the flexible sheet,
The wiring pattern can be formed without interfering with the display panel connection terminal and the electronic components such as the battery, and the wiring pattern can be easily formed without enlarging the circuit board.

In addition, since the analog movement, the display panel and the circuit board are provided in an overlapping manner, and the battery is arranged side by side on the analog movement, the display panel and the circuit board so as not to overlap with the analog movement, the display panel and the circuit board. In addition to being thinner, a thick battery, that is, a battery having a long life can be used. Moreover, since parts other than the seat switch are provided in the upper case and only the seat switch is provided in the lower case, the lower case including the seat switch can be made as thin as possible, and thus the entire timepiece can be made thinner. be able to.

[Brief description of the drawings]

FIGS. 1 to 9 are views for explaining an electronic timepiece according to an embodiment of the present invention. FIG. 1 is a plan view showing a state in which an upper case is opened, and FIG. 2 is a view of FIG. FIG. 3 is a longitudinal sectional view taken along line AA, FIG. 3 is a plan view showing a state where the upper case is closed, FIG. 4 is a longitudinal sectional view taken along line BB in FIG. 3,
5 is a plan view of the upper housing part, FIG. 6 is a bottom view of the upper housing part, FIG. 7 is a bottom view in a state where a circuit board or the like is attached to the upper housing, and FIG. FIG. 9 is a bottom view in a state where the lower housing and the like are attached, and FIG. 9 is an exploded perspective view of a main part. DESCRIPTION OF SYMBOLS 1 ... Lower case, 2 ... Upper case, 3 ... Hinge pin, 4 ... Circuit board, 5 ... Analog display part, 6 ... Digital display part, 31 ... Sheet switch, 32 ... Flexible sheet.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁶ , DB name) G04C 3/00 G04C 10/00 G04G 1/00

Claims (1)

(57) [Claims] 1. An upper case comprising: a lower case having a seat switch provided on an upper surface thereof; an upper case which is attached to the lower case at 3 o'clock or 9 o'clock so as to be openable and closable; an analog movement and a pointer. An analog display unit provided on the upper surface side of a digital display unit having an optical display panel and provided on a lower surface side of the upper case; and an analog display unit and the digital device provided in the upper case. A circuit board for driving a display unit; a battery provided in the upper case for driving the circuit board; and an openable / closable mounting of the upper case which is led out from an openable / closable mounting side of the lower case. A flexible sheet inserted into the upper case from the side of the unit and electrically connecting the sheet switch to the circuit board; The battery, the display panel and the circuit board are provided in an overlapping manner, and the battery is provided side by side on the analog movement, the display panel and the circuit board so as not to overlap with the analog movement, the display panel and the circuit board. An electronic timepiece characterized by being used.