JPS6123517B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waterproof mechanism for various switches such as an input/output switch or a correction switch of a watch body of a portable watch with an electronic computer or an additional device.

An object of the present invention is to add a waterproof function to each part of a watch body or an input/output switch or a correction switch of an additional device, which is the most difficult part of a portable watch with an electronic additional device.

The biggest problem with portable watches with electronic additional devices is the waterproofing of the watch body, input/output switches for operating the additional devices, and correction switches for adjusting the time, day of the week, etc. Waterproofing of portable watches is essential. Since many switches such as various input/output switches and correction switches are used in portable watches equipped with electronic additional devices, waterproofing of these parts becomes a very big problem.

In view of the above, the present invention is intended to solve the problem of waterproofing a portable watch with an electronic additional device. One embodiment will be explained below with reference to the drawings. FIG. 1 shows an overview of a portable watch with a calculator as an example of a portable watch with an electronic additional device. In Figure 1, 1 is a case, 2 is a portable band, 3 is a digital display such as a liquid crystal display for time and calculations, and 4 is a number key with numbers 0 to 9 and a decimal point, of which numbers 7, 8, and 9 are It also serves as a time correction switch. 5 is various calculation switches. Reference numeral 6 is used to switch between the time display and the calculation display on the display section 3 by pulling it out one step. One method of waterproofing each part of the numeric switch 4 and the arithmetic switch will be explained with reference to the sectional view shown in FIG.
In FIG. 2, 11 is the back cover, 12 is the board, 13
14 is a display such as a liquid crystal or a light emitting diode, 15 is a sheet-like elastic body made of rubber, 16 is a key, 17 is a spring, and 18 is a case. . As shown in FIG. 2, the switch mechanism 13 for setting numbers and calculations or for correcting the time and day of the week is covered with an elastic body 15 such as rubber, and this is connected to the back lid 11 and the case 1.
8 is used as packing rubber 19. A pushbutton key 16 is installed on the elastic body 15 via a spring 17. (If the elastic body 15 has the necessary and sufficient elasticity, the spring 17 may be omitted.) If the above method is used, even if water enters from the gap 20 between the key 16 and the case 18, the elastic body 15 will completely prevent the water from entering. You can expect a waterproof effect. A specific example of a switch using the present invention is shown in FIGS. 3 and 4. In FIG. 3, 21 is the substrate, 22 is the substrate 2
The printed electrode 23 provided on 1 is an elastic body and also serves as rubber for the packing. 24 is a conductive rubber installed on an elastic body, 25 is a case,
26 is a push button key. Switching is performed when the conductive rubber 24 pressed by the key 26 comes into contact with the comb-shaped electrodes 22 provided on the substrate 21. In this case, since the elastic body 23 has appropriate elasticity, it is possible to perform switching very reliably in addition to the waterproof effect, and the effect is great.

The present invention is not limited to the above example, but can also be used to have a structure in which the switch can be operated by a key separate from the switch part, such as a reed switch, a micro switch, etc., and can be widely applied to various electronic additional device portable watches. .

As described above, in the present invention, by arranging a separate sheet-like elastic body such as a numeric key between the numeric key and the terminal of the movement, when one numeric key is pressed, the entire sheet-like elastic body Since the elastic body is bent and acts as a return spring, it has the advantage of being able to set a sufficient effective spring length and obtain a stable return spring force even in small electronic calculations. By holding the key between the back lids, the waterproof function of both the number key part and the back lid fastening part can be achieved, and the structure has the advantage of being extremely simple.

[Brief explanation of the drawing]

Figure 1 is an overview of a portable watch with a calculator. FIG. 2 is a sectional view showing an embodiment of the present invention. FIG. 3 is a plan view showing a specific example of a switch using the present invention. Fourth
The figure is a sectional view of FIG. 3. 1... Case, 2... Portable band, 3... Time and calculation display section, 4... Number keys, 5... Various calculation switches, 6... Reuse, 11... Back cover, 12... Board , 13...Set number and calculation or time, day of the week correction switch, 14...Display body, 15...Elastic body, 16...Key, 17...Spring, 21...Substrate, 22...Printed electrode, 23...
... Elastic body, 24 ... Conductive rubber, 25 ... Case, 26 ... Key.

Claims (1)

[Claims] 1 at least an electronic display section that displays the time;
In a portable watch with a computer in which a plurality of number keys used for operating a computer are arranged on the front of the watch case, an electrode for an input switch is provided on a circuit board of the watch body facing the number keys. a sheet-like elastic body, which is separated from the number key and is arranged between the number key and the circuit board, with a space between the number key and the circuit board;
The sheet-like elastic body faces all of the numeric keys and serves as a return spring, and the outer peripheral portion is arranged between the body and the back cover of the watch case to make the watch case waterproof. A portable watch with an electronic calculator.