JPH0323591Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a module structure of an electronic wristwatch.

[Prior Art] Conventionally, methods for attaching a liquid crystal display device to an electronic wristwatch include, for example, attaching the liquid crystal display device to the housing by holding the peripheral edge of the device with a display holding plate, or by providing a storage section in the housing and attaching it to the back side of the housing. There are two methods: one method is to attach the liquid crystal display device from the top of the housing, the other is to provide a spring locking portion in the housing portion of the housing and attach the liquid crystal display device to the housing portion from the upper surface of the housing.

[Problems with conventional technology]

However, the mounting method using a display suppressing plate not only requires a component called the display suppressing plate, but also requires screws etc. to attach the display suppressing plate to the housing, which requires a large number of parts.
The structure is complicated, the cost is high, and a large mounting space is required. Moreover, if the screws for attaching the display suppressing plate to the housing are strongly tightened, there is a problem that the liquid crystal display device may break.

In addition, with the method of mounting the liquid crystal display device into the storage section of the housing from the back side, the interconnector that electrically connects the circuit board and the liquid crystal display device provided on the bottom surface of the housing tends to fall down, and the bottom of the liquid crystal display device Since it is not possible to build up the inner wall of the storage portion of the housing on the side, the liquid crystal display device cannot be securely held, resulting in disadvantages such as insufficient strength.

Furthermore, in the method of attaching the liquid crystal display device to the housing compartment from the top side, the liquid crystal display device must be attached with the spring locking part provided at the top of the inner wall of the housing compartment pulled up. Difficult to attach the device. Moreover, not only is the spring locking part pushed up by the reaction force of the interconnector, but the liquid crystal display cannot be fixed securely and firmly because the spring locking part has only a small part to hold down the liquid crystal display. There are drawbacks.
It is also conceivable to provide an opening in the horizontal direction of the liquid crystal display housing and insert the liquid crystal display through this opening.
In this case, it is necessary to close the opening after insertion, which has the disadvantage that the structure becomes complicated and the number of parts increases.

[Purpose of invention]

This idea was made in consideration of the above-mentioned circumstances, and has a simple structure with a small number of parts, which makes it easy to insert and install the liquid crystal display, and also allows the liquid crystal display to be installed securely and well. Our goal is to provide a modular structure for electronic wristwatches.

[Key points of the idea]

In order to achieve the above object, this invention provides an opening in the horizontal direction of the liquid crystal storage section of the housing, inserts the liquid crystal display device through this opening, and provides an elastic piece on the side opposite to the opening. The liquid crystal display device is pressed toward the opening side, and the pressed liquid crystal display device is received and held by an analog movement disposed on the opening side.

〔Example〕

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

FIG. 1 shows the completed state of the electronic wristwatch module, with FIG. 1a being a plan view of its exterior, FIG. 1b being a side view of its exterior, and FIG. 1c being a bottom view of its exterior. In the figure, reference numeral 1 denotes a housing. An analog block 2 and a liquid crystal display device 3 are disposed within the housing 1, and a circuit board 4 is attached to the bottom surface by a base plate 5. The analog block 2 indicates the time using a pointer (not shown), and includes an analog movement 2a and a stator 2.
b etc. The analog movement 2a is arranged approximately at the center of the housing 1, and includes a pointer shaft 2c that projects upward, and is configured to indicate the time by moving a pointer (not shown) attached to the pointer shaft 2c. . Further, a reuse 2d that passes through the housing 1 and projects laterally is attached to the analog movement 2a. This reuse 2d has analog movement 2.
This is used to adjust the time of a. The liquid crystal display device 3 not only digitally displays the date and day of the week, but also can display time information.
It is located at the position of

Fig. 2 shows the housing 1, Fig. 2a is an external plan view thereof, Fig. 2b is a sectional view taken along line A-A, Fig. 2c is a bottom view thereof, and Fig. 2d is Fig. 2a. B-
It is a sectional view taken along the B line. As shown in FIG. 2a, the housing 1 is provided with a movement storage section 6 that stores an analog movement 2a at approximately the center thereof, and a stator storage section 7 that stores a stator 2b adjacent thereto. Housing 1
At the "3 o'clock" position, a liquid crystal housing section 8 for housing the liquid crystal display device 3 is provided in communication with the movement housing section 6. Further, on the bottom side of the housing 1, as shown in FIG.
An LSI storage section 12 that stores an LSI 11, and a component storage section 1 that stores various electronic components 13 that will be described later.
4 is provided. In this case, the movement housing portion 6 is a hole penetrating the housing 1 from the top and bottom. The stator storage portion 7 is a recessed portion that stores the stator 2b, and has an opening formed at its bottom. A coil storage section 15 is provided near the stator storage section 7 . The liquid crystal storage section 8 stores the liquid crystal display device 3 from the side of the movement storage section 6, and has a concave shape that communicates with the movement storage section 6 on one side. A flange portion 8a is formed to lock the upper periphery of the liquid crystal display device 3 so that the liquid crystal display device 3 does not come off upward, and an elastic holding piece 8b is formed on the rear wall and one side wall of the storage portion 8 to elastically press and hold the liquid crystal display device 3. ，
8c is provided as shown in FIGS. 2a and 2d. Furthermore, insertion holes 8d and 8 into which interconnectors 16 and 16, which will be described later, are inserted are provided at the bottom of the storage portion 8.
d are formed on both sides as shown in FIGS. 2b and 2c.

FIG. 3 shows the liquid crystal display device 3 stored in the liquid crystal storage section 8, FIG. The bottom view, FIG. 3d, is a sectional view taken along line D--D in FIG. 3a. The liquid crystal display device 3 includes transparent glass substrates 3a, 3.
A liquid crystal (not shown) is sealed between space a, and polarizing plates 3b and 3b are provided on the upper and lower surfaces. When storing the liquid crystal display device 3 in the storage section 8, it is inserted into the storage section 8 from the movement storage section 6 side of the housing 1. Then, one side of the liquid crystal display device 3 is elastically pressed by the elastic holding piece 8c in the housing portion 8, and is held between the liquid crystal display device 3 and the opposite side wall. Further, the inner part of the liquid crystal display device 3 comes into contact with the elastic holding piece 8b and is pressed elastically. In this case, by storing the analog movement 2a in the movement storage section 6, the opposite end of the liquid crystal display device 3 comes into contact with the analog movement 2a, so that the liquid crystal display device 3 is pressed by the elastic holding piece 8b. However, it will not be pushed out from the storage section 8. Then, when the interconnectors 16, 16 are inserted from below through the insertion holes 8d, 8d of the storage section 8, the liquid crystal display device 3 is pushed up by the interconnectors 16, 16, and the upper peripheral portion of the liquid crystal display device 3 is stored. The liquid crystal display device 3 comes into contact with the flange portion 8a of the portion 8, and thereby the liquid crystal display device 3 is fixedly held within the storage portion 8.
In this case, the lower surfaces of the interconnectors 16, 16 are held down by the circuit board 4 attached to the lower part of the housing 1.

4 shows the circuit board 4, FIG. 4a is a plan view thereof, and FIG. 4b is a side view thereof. circuit board 4
is attached to the bottom surface of the housing 1, and the LSI 11 and the chiyoke coil 17 are mounted on the top surface.
In addition, electronic components 13 such as a crystal oscillator 13a, a trimmer capacitor 13b, a transistor 13c, a chip capacitor 13d, etc. are provided, as well as an electrode terminal group 18 for a liquid crystal display and an electrode terminal 19 for a stator. There is. Furthermore, the circuit board 4 has openings 4a at locations corresponding to the openings of the movement storage section 6, the stator storage section 7, and the battery storage section 10 of the housing 1, respectively.
4b and 4c are formed, and the side wall of the circuit board 4 is also provided with switch contacts 20 and 20. Therefore, the circuit board 4 is connected to the housing 1.
When placed on the bottom surface of housing 1, LSI11
The LSI storage section 12 contains the chiyoke coil 17, the coil storage section 15 contains the various electronic components 13, and the various electronic components 13 are stored in the component storage section 1.
Each is stored in 4.

The base plate 5 on which the circuit board 4 is attached to the lower surface of the housing 1 is made of a thin metal plate, as shown in FIG. A battery holding plate 5b and a connection contact piece 5 are provided on the bottom.
c, and a connecting coil spring 5d. The locking hook attaches the base plate 5 to the housing 1 by being locked to a locking portion (not shown) provided on the side wall of the housing 1. switch board 5
5a and 5a are used to correct the date, change the display, etc. of the liquid crystal display device 3, and are located on the side of the circuit board 4, and contact the contacts 20, 20 of the circuit board 4 so as to be able to come into contact with and separate from them. The battery holding plate 5b holds down the battery 9 housed in the battery storage section 10 of the housing 1. The connection contact piece 5c and the coil spring 5d apply voltage to a piezoelectric element provided on the back cover of the watch case (not shown) to generate a buzzer sound. It is connected to one electrode of the piezoelectric element through the lid, and the coil spring 5d is in direct contact with the piezoelectric element.

Next, the case of assembling the module of the electronic wristwatch as described above will be explained.

In this case, first, the liquid crystal display device 3 is housed in the liquid crystal housing section 8 of the housing 1. That is, the liquid crystal display device 3 is housed in the liquid crystal housing section 8 from the movement housing section 6 side provided approximately at the center of the housing 1 . Then, the liquid crystal display device 3 is elastically held by the elastic holding pieces 8b and 8c in the storage portion 8 without moving in the lateral direction (left-right and front-back directions).
Then, insert the interconnectors 16, 16 from below through the insertion holes 8d, 8d of the storage section 8, and connect the interconnectors 16, 16 to the liquid crystal display device 3.
Push up and move the peripheral part of the liquid crystal display device 3 into the storage section 8.
The liquid crystal display device 3 is held fixed in the vertical direction by being brought into contact with the flange portion 8a of the liquid crystal display device 3.

After this, move the movement storage part 6 of the housing 1.
Then, the analog movement 2a and the stator 2b are stored in the stator storage portion 7 from above. When the analog movement 2a is stored in this way, the liquid crystal display device 3 displays the analog movement 2a.
Since it comes into contact with the side wall of the liquid crystal storage section 8, it does not come out from the liquid crystal housing section 8.

Then, a circuit board 4 is placed on the lower surface of the housing 1, and the circuit board 4 is attached to the housing 1 with a base plate 5. Then, the interconnectors 16, 16 of the liquid crystal display device 3 are held in the housing part 8 by the circuit board 4 without coming out from the insertion holes 8d, 8d, and are connected to the electrode terminal group 18 for liquid crystal display of the circuit board 4. In contact with the circuit board 4 and the liquid crystal display device 3
electrically connect with. Further, the LSI 11, the chiyoke coil 17, and various electrical components 13 provided on the circuit board 4 are respectively accommodated in the respective storage sections 12, 15, and 14 of the housing 1, and each opening provided in the circuit board 4 is accommodated in the housing 1. 4a, 4b, and 4c correspond to the movement storage section 6, the stator storage section 7, and the battery storage section 10, respectively. Further, the switch contacts 20, 20 provided on the side wall of the circuit board 4 are connected to the switch plates 5a, 5 of the main plate 5.
a corresponds to separation so that it can come into contact with and separate from it.

However, according to the above-mentioned module structure, the liquid crystal display device 3 is inserted into the liquid crystal storage portion 8 provided in the housing 1 from the movement storage portion 6 side of the housing 1, that is, from the lateral direction of the housing 1, and the liquid crystal display device 3 is inserted into the liquid crystal storage portion 8 provided in the housing 1 from the movement storage portion 6 side of the housing 1, The elastic holding pieces 8b and 8c in the 8 hold the liquid crystal display device 3, and the interconnector 1
6 and 16, the liquid crystal display device 3 is attached to the flange 8a of the storage section 8.
Since the liquid crystal display device 3 is pressed against the liquid crystal display device 3, the liquid crystal display device 3 can be reliably and satisfactorily attached with a simple structure without using separate parts such as a conventional display suppressing plate. Moreover, the liquid crystal display device 3 can be easily inserted, the number of parts is small, a large space is not required, and high-density mounting is possible. Furthermore, since the interconnectors 16, 16 prevent the liquid crystal display device 3 and its elastic holding pieces 8b, 8c, etc. from floating upward and protruding, or cracking the liquid crystal display device 3, It becomes possible to attach the dial plate in close contact with each other in a good manner.

[Effect of idea]

As explained above, according to the modular structure of the electronic wristwatch according to this invention, an opening is provided in the horizontal direction of the liquid crystal storage section of the housing, the liquid crystal display device is inserted through this opening, and the liquid crystal display device is inserted into the housing on the side opposite to the opening. An elastic piece is provided to press the liquid crystal display device toward the opening side, and the pressed liquid crystal display device is received and held by an analog movement placed on the opening side, making it easy to store and hold the liquid crystal display device. can be inserted into the
A liquid crystal display device can be mounted reliably and satisfactorily with a simple structure, and there are advantages such as no need for separate parts such as a display suppressing plate, fewer parts, and high-density mounting possible.

[Brief explanation of the drawing]

The figures show one embodiment of this invention, and Fig. 1 shows the completed state of the module, Fig. 1 a is its external plan view, Fig. 1 b is its side view, and Fig. 1 c is its external bottom view. , Figure 2 shows the housing, Figure 2a
is its plan view, FIG. 2b is its A-A sectional view,
Figure 2c is its bottom view, Figure 2d is B of Figure 2a.
-B cross-sectional view, Figure 3 shows the liquid crystal display device stored in the liquid crystal storage part of the housing, Figure 3a
3 is a plan view of the main part, FIG. 3 b is a sectional view taken along line C-C, FIG. 3 c is a bottom view, and FIG. 3 d is a diagram of FIG. 3 a.
FIG. 4 shows a circuit board, FIG. 4a is a plan view thereof, and FIG. 4b is a side view thereof. 1...Housing, 2...Analog block,
2a...Analog movement, 3...Liquid crystal display device, 8...Liquid crystal storage section.

Claims (1)

[Claims for Utility Model Registration] An analog movement that displays the time with a pointer attached to a pointer shaft, a movement storage portion that houses the analog movement so that the pointer shaft of the analog movement is located approximately at the center, and A modular structure of an electronic wristwatch, comprising a housing in which a liquid crystal storage part for storing a substantially rectangular liquid crystal display device is formed at the 3 o'clock position of the time displayed by the hands, the liquid crystal storage part of the housing being , an opening formed in the direction of the pointer axis, a first elastic piece formed on a surface facing the opening and pressing the short side of the liquid crystal display device toward the opening, and a long side of the liquid crystal display device. and a flange portion that locks an upper end portion of the liquid crystal display device, and the liquid crystal display device is inserted laterally into the liquid crystal storage portion from an opening in the direction of the pointer axis. . A modular structure of an electronic wristwatch, which is positioned by being in contact with the analog movement housed in the movement housing section by the pressure of the first pressing piece.