JPS6318109Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a changeover switch structure for a timepiece.

In recent years, the number of liquid crystal display watches has increased rapidly, to the point where they now split the market in half with needle-type crystal watches.

As liquid crystal display watches have become more multi-functional, their operation methods have also become more complex.
There are not a few of them. However, from the point of view of consumers, it has not been long since LCD watches have been commercialized.
Many people are using it for the first time, and since the operation is completely different from the hand-type watches they have been using, many people feel anxious and confused about how to use a single-function LCD watch.

The present invention aims to change the switch operation of a liquid crystal display watch from a push button operation to the same use operation as a hand-operated watch, making it easy to use even for people who are not accustomed to carrying liquid crystal display watches, especially women and the elderly, and to provide a compact and simple changeover switch structure that can be attached to small watches such as women's watches. This will be explained in detail with reference to the drawings below.

FIG. 1 is a drawing showing one embodiment of the present invention.
Figure 1-a is a plan view, and Figures 1-b and 1-c are sectional views.

1 is a winding stem and has a cam 1a. 2 is a click lever that connects the switch spring 7 and the click parts 2a, 2.
It has b. Reference numeral 4 denotes a circuit case having projections 4a and 4b formed by a click pin 3, a spring 4c, and a slide.

5 is a switch lever having springs 5a and 5b. 6 is a circuit board having switch pins 8a, 8b and electrode patterns 6a, 6b, 6c.

10 has a protrusion 10a on the panel frame.

The winding stem 1 is provided with a cam 1a connected to a thin shaft portion 1b at its tip end. As is clear from FIG. 1-b, the click lever 2 is provided with a rising portion 2c, which engages with the shaft portion 1b of the winding stem 1. Specifically, as shown in FIG. 4, which is a front cross-sectional view of the winding stem 1 from the reuse direction, a recess 2d is provided in the rising portion 2c of the click lever 2.
The rising portion 2c is configured to engage with the cam 1a over a wide range.

Here, the click lever 2 is engaged with the winding stems 1 and 2c, and is positioned two-dimensionally by the click pin 3 of the circuit case 4 and the recess of the click part 2a.

The click lever 2 is connected to the spring 4c of the circuit case.
The winding stem 1 is pushed up by the click lever 2.
The c part comes into contact with the winding stem 1 and the click lever 2 to prevent rattling. The click lever 2 is pushed up by the spring 4c of the circuit case in cross section and is set at the rising part 2c on the winding stem 1. The switch lever 5 is connected to the click pin 3 of the circuit case 4.
The switch lever 5 has a pivot shaft which engages with a cam 1a of the winding stem 1. The spring portions 5a and 5b of the switch lever 5 engage with a saltwater 4b of the circuit case 4 and are positioned together with a click pin.

In addition, the switch lever 5 is cross-sectionally connected to the panel frame 1.
0 and the click lever 2.

The switch spring 7 of the click lever 2 is in contact with the electrode patterns 6a and 6b of the circuit board 6.

Figure 1 shows the watch in its normal carrying state with the winding stem in the first stage, and Figure 2 shows the watch in its corrected state with the winding stem pulled out from Figure 1.
It is exactly the same as the figure. Figure 2-a is a plan view,
Fig. 2-b and Fig. 2-c.

In the normal carrying state shown in FIG. 1, "hours and minutes" are displayed on the liquid crystal panel 11 as shown in FIG.

Now, when winding stem 1 is rotated clockwise, cam 1a of winding stem 1
The switch lever 5 rotates and engages the cam 1a.
swings around the click pin 3 set up on the circuit case 4, the spring portion 5a of the switch lever 5 contacts the switch pin 8a of the circuit board 6, the switch is activated, and the display on the liquid crystal panel 11 is as shown in FIG. The calendar display switches from "hours/minutes" shown in FIG. 6 to "months/days" shown in FIG. When the winding stem 1 is further rotated clockwise, the cam 1a and the switch lever 5 are disengaged. Even when the spring parts 5a and 5b of the switch lever 5 are swung until the cam 1a and the switch lever 5 are disengaged, the spring part 5a remains in contact with the switch pin 8a and flexes, so that the switch lever 5 is not damaged. There is. In addition, in order to absorb variations in the swinging stroke of the switch lever 5, the spring portion 5a of the switch lever 5 is brought into contact with the switch pin 8a, and after contact, the spring portion 5a is deflected to improve the reliability of the switch. . When the cam 1a and the switch lever 5 are disengaged, the cover 4b of the circuit case 4
The spring 5b of the switch lever 5, which is engaged with the switch lever 5, is bent as the switch lever 5 is swung by the cam 1a, so when the cam 1a and the switch lever 5 are disengaged, the switch lever 5 becomes fixed. returned to position. Cam 1 of winding stem 1 as shown in Figure 4.
a has two teeth, and when the cam 1a rotates once, the switch lever 5 comes into contact with the switch pin 8a twice, and the display on the liquid crystal panel 11 changes to the "hours" shown in FIG.
The "minute" status and the "month/day" status shown in FIG. 6 are repeatedly displayed.

Also, when the winding stem 1 is rotated to the left, the operation is the same as when the winding stem 1 is rotated to the right. Then, the spring portion 5b of the switch lever 5 comes into contact with the switch pin 8b and the switch operates, and the display on the liquid crystal panel 11 changes from the "hours and minutes" shown in FIG. 5 to the "month and day" display shown in FIG. 6. When the winding stem 1 is further rotated to the left, the cam 1a is disengaged from the switch lever 5, and the spring portion 5a of the switch lever 5 returns it to the home position. Furthermore, winding stem 1
When the switch lever 5 is rotated counterclockwise, the switch lever 5 comes into contact with the switch pin 8b again, and the display on the liquid crystal panel 11 returns from the "month/day" display shown in FIG. 6 to the "hour/minute" display shown in FIG. 5, and the winding stem 1 Figures 5 and 6 are obtained by rotating to the left.
The display on the liquid crystal panel 11 shown in the figure is alternately repeated.

Next, when the winding stem 1 is pulled out and brought into the corrected state shown in FIG. It engages with the click pin 3 and the winding stem 1 is positioned at the second stage. At this time, when the click portion of the click lever 2 moves the click pin 3, a click feeling is generated, similar to the conventional hand-type timepiece. The click lever 2 has a switch spring 7, and in the first stage state in which the winding stem is pushed in, the switch spring 7 is in contact with the electrode patterns 6a and 6b of the circuit board 6. 6a is a positive terminal. In this state, the switch spring 7 is not in contact with the electrode pattern 6c, so the watch is in the normal portable mode. When the winding stem 1 is pulled out and the click lever 2 moves, the switch spring 7 also moves at the same time and comes into contact with the electrode pattern 6c of the circuit board 6.
When the switch spring 7 contacts the electrode pattern 6c, the positive terminal of the electrode pattern 6a and the electrode pattern 6
c is connected via the switch spring 7, and the watch enters the correction mode. In this state, the hours and minutes shown in Figure 5
The colon 11a changes from flashing to lit, and the seconds are reset and the clock is stopped. This is no different from the phenomenon of a needle-type quartz watch with the winding stem pulled out.

Here, winding stem 1 is pulled out to the second stage, but cam 1
a is always engaged with the switch lever 5.

In this state, rotate the winding stem 1 to correct the hours and minutes. When winding stem 1 is rotated clockwise, cam 1 of winding stem 1
a rotates, the switch lever 5 that engages with the cam 1a is swung around the click pin 3 set up on the circuit case 4, and the spring portion 5a is attached to the switch pin 8a.
When touched, the switch operates and the display on the liquid crystal panel 11 is corrected as shown in FIGS. 5 to 7. The correction made by turning the winding stem 1 clockwise is an additive correction that corrects the "minutes" and is linked to the "hours" as shown in FIG. Moreover, when the winding stem 1 is rotated counterclockwise, it is exactly the opposite, and each time the switch operates, the ``minutes'' are subtracted and corrected, and the ``hours'' are also corrected.

The operation at this time is exactly the same as when the winding stem 1 is rotated in the normal state shown in FIG.

Once the correction is complete, push in the winding stem 1,
The click lever 2 is moved to the first stage to remove the contact between the switch spring 7 and the copper foil pattern 6c of the circuit board 6 to return to the normal mode. At this moment, the clock starts moving.

The correction of "month/day" is similar.In the first row, rotate the winding stem 1 to change the display from "hours/minutes" shown in Figure 5 to "month/day" shown in Figure 6, and turn the winding stem 1. Correct the drawer.

The structure of the changeover switch of the present invention is as described above, but as shown in Figure 1-b, the winding stem 1 is connected to the outer case 9.
Since it is guided only by the winding stem 1, the cam 1a of the winding stem 1 and the switch lever 5 tend to be misaligned in cross-section, and there is a risk that the amount of engagement between the cam 1a of the winding stem 1 and the switch lever 5 will vary, causing the swing stroke of the switch lever to change. Therefore, the click lever 2 is moved by the spring 4c of the circuit case 4.
Push up and apply the click lever 2c to the winding stem 1.

At this time, when the click lever 2 is pushed up by the spring 4c of the circuit case 4, the switch lever 5 located between the panel frame 10 and the click lever 2 loses its lag and malfunctions. The protrusion 10a is provided with a height equal to or greater than the thickness of the switch lever 5 to ensure that the switch lever 5 is free.

Further, as shown in FIG. 3, the switch spring 7 of the click lever 2 causes the click lever 2
You can also decide the degree. Furthermore, a structure in which the click lever 2 and the switch lever 5 are arranged differently is also possible.

According to the structure of the present invention, all the switch functions of the changeover switch operation by the winding stem are performed by the combination of the switch lever and the click lever, so the structure is simple and compact. Furthermore, since the structure is simple, it can be combined with other parts to create a changeover switch structure suitable for each individual watch.

Furthermore, since the engaging parts of the switch lever and the winding stem, and the engagement parts of the click lever and the winding stem are on almost the same plane, and the space is small, the winding stem can also be shortened, so even if it is placed side by side with the liquid crystal panel as shown in Figure 1, the watch body can be easily adjusted. It also prevents the display area of the liquid crystal panel from becoming too large.

Since the swing shaft of the switch lever also shares the clip pin of the click lever, the number of parts does not increase and space is also saved.

Furthermore, since the means for stabilizing the engagement between the cam of the winding stem and the switch lever can be made from the circuit case or panel frame, the number of parts does not increase, and the cost does not increase.

The number of teeth on the cam of the winding stem is preferably two or four, which improves the workability of attaching the winding stem to the reuse, and is also desirable from the viewpoint of operation of the switch.

The present invention is as described above, and the complicated button operations on LCD watches are made easier by pulling out and rotating the crown, similar to the needle-type watches that consumers are accustomed to, making it easier to operate, especially for women and the elderly. Moreover, it is compact and small like a woman's watch.
It provides a changeover switch structure that can be installed even in thin watches, and its effects are great.

[Brief explanation of the drawing]

Fig. 1 and Fig. 2 are drawings showing an embodiment of the present invention, Fig. 1-a and Fig. 2-a are plan views, Fig. 1-b,
1-c, 2-b, and 2-c are cross-sectional views. FIG. 3 is a sectional view showing another embodiment of the present invention. FIG. 4 is a drawing showing the engagement relationship between the winding stem cam and the switch lever of the present invention. FIGS. 5, 6, 7, and 8 are diagrams showing the display state of the clock according to the present invention. 1... winding stem, 2... click lever, 3... click pin, 4... circuit case, 5... switch lever, 6... circuit board, 7... switch spring,
8...Switch pin, 9...Exterior case, 10...
...Panel frame, 11...LCD panel.

Claims (1)

[Scope of utility model registration request] The structure of a changeover switch for a watch that has a liquid crystal display device and that adjusts the time by rotating an external operating member includes an external operating member, a circuit case, a circuit board, a click lever, and a switch lever, and the click lever is connected to the external operating member. constantly engaging with the operating portion and moving in response to the axial movement of the external operating member, and elastically engaging with a click pin fixed to the circuit case to position the external operating member in multiple stages in the axial direction; At the same time, the click lever contacts a first electrode formed on the circuit board to form a first switch, and the switch lever engages with a cam formed on the external operating member to switch the external operating member. When the cam rotates, the cam swings the switch lever about an axis on the circuit case, and forms a second switch with a second electrode provided on the circuit board; A changeover switch structure for a watch, characterized in that a click lever and the switch lever are arranged one on top of the other.