JPS6157587B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a digital display type electronic wristwatch, and particularly to a module structure of the electronic wristwatch.

Generally, the module structure of a digital display electronic wristwatch consists of a module frame, a display device,
From the substrate to which large-scale integrated circuits (hereinafter referred to as LSI) and crystal resonators are fixed, the metal contacts of the switch, the battery, the battery terminals connected to the battery, and the holding metal fittings that hold and secure the battery. It is completed. In this structure, the board is fixed to the module frame with screws or adhesive, and the leads led out from the board are soldered to the metal contacts of the switch, battery terminals, etc., so it takes time to attach the board. It takes a lot of time and productivity is bad. In addition, the holding metal fittings that secure the battery are screwed to the module frame, which has the disadvantage of requiring time and effort when replacing the battery.

The object of the present invention was made in view of the above-mentioned drawbacks, and is to provide an electronic wristwatch that greatly simplifies module assembly of the electronic wristwatch and further reduces its thickness.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view of an electronic wristwatch module showing an embodiment of the present invention, and FIG. 2 is a right side view of the embodiment shown in FIG.

In FIGS. 1 and 2, 1 is a module frame made of synthetic resin, 2 is a substrate made of ceramic, and an electro-optical display element 3, a crystal resonator 4, etc. are fixed thereto. The module frame 1 has battery storage holes 5 and 6 provided on the top and bottom of the back surface, and a space in which the board 2 is mounted at the center of the front surface, that is, at a position sandwiched between the battery storage holes 5 and 6 provided on the top and bottom. 7 is provided, and furthermore, a space 8 into which the crystal resonator 4 is inserted is provided on the left side of the center. The electro-optical display element 3 fixed to the substrate 2 is a light emitting diode (hereinafter referred to as an LED element), and an LED
The elements 3 are each formed in the shape of a Japanese letter, and these LED elements 3 are protected by a cover 9 made of transparent resin. Further, the substrate 2 is fixed to the module frame 1 by claws 10 provided at the center of both sides of the module frame 1. The claws 10 can be bent outward and have elasticity, and catch and fix both ends of the substrate 2.

Next, the substrate 2 will be further explained. FIG. 3 is a perspective view of the substrate 2 seen from the back side. The substrate 2 is a rectangular ceramic board, and the back side has the LSI 11 on which a clock circuit is formed, the crystal oscillator 4, the capacitor 12, and the LSI cover 13 fixed, and the front side has the LED element 3 and the LED cover as described above. 9 is fixed. These LSI 11, crystal oscillator 4, and capacitor 12 are connected to each other by a conductive path provided on the surface of the substrate 2, and the LED element 3 provided on the front is connected to the LSI 11 by a through hole and a conductive path provided on the substrate. connected to. Further, the upper and lower corners of the left side of the substrate 2 are cut out, and electrodes 14 and 15 are formed in these parts by vapor deposition or the like. These electrodes 14, 15
serves as a demand switch or a switch electrode for time adjustment, for example. Also, on the back side of the board 2, there is an LSI 11, a crystal resonator 4, and a capacitor 12.
and a pair of wing-shaped terminal plates 16, 1 connected to the electrode terminals of the battery in order to supply power to the LED element 3.
7 is fixed. As shown in FIG. 1, the terminal plates 16 and 17 are provided with holes 1 that pass through the battery storage holes 5 and 6 from the front of the digital frame 1 when fixing the board 2.
8 and 19 and extend into each of the battery storage holes 5 and 6.

FIG. 4 is a rear view of the electronic wristwatch module of the embodiment shown in FIGS. 1 and 2 with a battery inserted. Reference numerals 20 and 21 indicate batteries inserted into the battery storage holes 5 and 6, 22 indicates a presser metal fitting for fixing the batteries 20 and 21, 23 indicates a screw 24 fixed to the module frame 1, and furthermore, the switch electrodes 14 and 15 of the board 2 are fixed to the module frame 1 with screws 24. It is a metal piece with elasticity that extends to the vicinity.

The metal piece 23 consists of a plate-shaped metal plate extending in opposite directions from the center, and a pair of contact pieces 25 and 26 that are bent at right angles at the ends extending in opposite directions and extend to the vicinity of the center, This metal piece 23
By inserting it into the groove 27 provided on the right side of the module frame 1 and fixing it with the screw 24, the pair of contact pieces 25 and 26 are opened on the right side of the module frame 1 as shown in FIG. opening 28,
Further, the ends of the contact pieces 25 and 26 are exposed to the contact pieces 29 and extend in the vicinity of the switch electrodes 14 and 15 of the substrate 2. Openings 28, 29 of module frame 1
corresponds to the movable rod provided in the case when the completed module is installed in the case (not shown), and when the movable rod is pushed, the exposed contact pieces 25 and 26 are pushed, and the contact pieces 25 and 26 contacts the switch electrodes 14 and 15 of the substrate 2 to perform a switch operation.

The battery holding fitting 22 is an elongated elliptical elastic metal plate, and its ends contact the electrodes of the batteries 20 and 21, respectively, to connect the batteries 20 and 21 in series. Further, two stoppers 30 and 31 are provided at the center of the presser metal piece 22 and are inserted between the metal piece 23 and the module frame 1 to be locked therein. A claw 33 that is engaged and fixed is provided. After inserting the batteries 20 and 21, insert the stoppers 30 and 31 under the metal piece 23, and then
Insert the battery holding metal fitting 22 on the right so that 3 engages the groove 32.
Move and fix the whole thing. Also, since the metal piece 23 is connected to the stoppers 30 and 31, it is at the midpoint potential of the batteries 20 and 21, and when it comes into contact with the switch electrodes 14 and 15 on the board 2, the switch electrodes 14 and 15 are connected to the same potential. to potential.

As described above, according to the present invention, the board 2 is fixed together with the terminal plates 18 and 19 connected to the battery electrodes by simply hooking it onto the claws 10 of the module frame 1.
The switch contact pieces 25 and 26 constituting the switch are also installed by simply screwing the metal piece 23, and the batteries 20 and 21 are also fixed by simply moving the holding fitting 22. Therefore, the module can be easily assembled in three steps, which improves productivity, and also makes it easy to replace the batteries 20 and 21.

[Brief explanation of the drawing]

Fig. 1 is a front view of an electronic wristwatch module showing an embodiment of the present invention, Fig. 2 is a right side view of the embodiment shown in Fig. 1, and Fig. 3 is a board used in the embodiment shown in Fig. 1. FIG. 4 is a rear view of the embodiment shown in FIG. 1. DESCRIPTION OF SYMBOLS 1...Module frame, 2...Substrate, 3...Electro-optical display element, 4...Crystal resonator, 5, 6...Battery storage hole, 10...Claw, 16, 17...Terminal plate, 20,
21... Battery, 22... Presser fitting, 23... Metal piece, 3
0, 31, 33... engaging protrusion, 32... groove.

Claims (1)

[Claims] 1. In an electronic wristwatch comprising an electro-optical display element, a substrate to which the electro-optical display element and elements constituting a timepiece circuit are fixed, a battery, and a module frame to which all these are mounted, the module frame has battery storage holes provided on the upper and lower sides of the back surface thereof, and a claw provided on the front side of the module frame at a position sandwiched between the battery storage holes, and the board The module frame is fixed to the module frame, the electro-optic display element is fixed to the top surface, a large-scale integrated circuit element, a crystal resonator, etc. are fixed to the back surface, and a switch electrode is provided at at least one location on the side. and a pair of terminal plates extending to and fixed to the battery housing hole, provided on the back surface of the module frame, bent from the back surface to the side surface, and having an elastic terminal that contacts and separates from the switch electrode of the board. a metal piece, each engagement protrusion that is in contact with the back surface of the metal piece and engages with a groove provided on the back surface of the module frame, and a pressing protrusion that presses the battery accommodated in the battery storage hole. An electronic wristwatch characterized by comprising a presser metal fitting having a part.