JPS6325583A - Alarm device for timepiece - Google Patents

Abstract

PURPOSE:To achieve a longer life of a battery, by a method wherein an alarm switch at a first alarm mechanism is closed to generate an alarm sound when a set alarm time coincides with the current time and then, an alarm switch of a second alarm mechanism is opened to stop the alarm sound after a short time passes. CONSTITUTION:In a first alarm mechanism A, when with the rotation of a constant speed rotation wheel 6, a set alarm time coincides with the current time, a projection 6a of the constant speed rotation wheel 6 drops into a hole 2a of an alarm wheel 2 and an alarm switch is closed to generate an alarm sound. Then, after a specified short time passes, a projection 60a of a constant speed rotation wheel 60 in a second alarm mechanism B drops into a hole 20a of an alarm wheel 20 and the alarm switch is opened to stop the alarm sound. In this manner, the alarm switch is opened automatically in a short time. This eliminates waste consumption of a battery even when a sound stop button is not depressed erroneously thereby enabling a longer life of the battery.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a timepiece indicator device.

(Prior art) A guide device for an analog alarm clock is provided with a protrusion on the hour hand wheel or a guide cam that engages with the hour hand wheel, and the guide wheel, which is provided coaxially with the hour hand wheel or the guide cam, has the protrusion. A hole is provided opposite to the hour hand through which the protrusion can fall, and when the reference set time and the current time match, the protrusion fits into the hole and falls into the guide, thereby pushing the hour hand wheel or reference cam. The alarm was configured so that the spring came into contact with a reference terminal formed on the printed circuit board, and the alarm sounded.

(Issues to be Solved by the Invention) With the known indicator device for analog alarm clocks as described above, approximately 30 to 40 minutes are required from when the alarm sound starts until the age spring opens and the alarm sound stops. If I forgot to press the alarm stop button and left it as it was, the alarm would continue to ring during that time. As a result, the battery's lifespan was shortened, and the alarm sound was a nuisance to those around them.

SUMMARY OF THE INVENTION An object of the present invention is to shorten the opening time interval of the indicator switch in an indicator device for an analog alarm clock, thereby extending the battery life.

(Means for Solving the Problems) In order to achieve the above object, the present invention is characterized in that it is equipped with two sets of guide mechanisms, first and second, each of which has a guide wheel and a guide wheel. It consists of a constant-speed rotating wheel located coaxially with this, and one of the reference wheel and this constant-speed rotating wheel, for example, a protrusion falls toward the constant-speed rotating wheel, and the protrusion falls toward the reference wheel. Further, the second guide mechanism is configured to fall as a guide with a predetermined phase lag with respect to the first guide mechanism, and First and second spring pieces are provided that are displaced in conjunction with the respective reference falling movements of the second reference mechanism, and the reference switch is closed by the displacement of the first spring piece, and then the second spring piece is closed. It was made to open depending on the displacement of.

(Function) In the first reference mechanism, when the reference set time and the current time match due to the rotation of the constant speed rotating wheel, the first spring piece is displaced in conjunction with the reference drop of the first reference mechanism, and the reference switch is switched. closes and an alarm sound is generated. After a predetermined short period of time has elapsed, the second indicator mechanism drops and the second indicator is activated.
The spring piece is displaced to open the indicator switch and automatically stop the alarm sound.

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

In FIG. 1, the base plate 1 has a first guide mechanism A and a second guide mechanism A.
Mechanism B is provided as a guideline.

Therefore, first, the configuration of the first guide mechanism A will be explained.

The base plate 1 is provided with a first reference wheel 2 that is rotated when setting the reference time, and a first hour wheel 3 coaxially with the reference wheel 2. A minute hand wheel 42 and a second hand wheel 5 are provided respectively. By the way, according to the illustrated example, the constant speed rotating wheel is composed of an hour hand wheel 3 that rotates at a constant speed by a clock mechanism, and a first rotating body 6 located on the upper surface side of the hour hand wheel. It is. At least two protrusions 6a are vertically provided on the lower surface of the rotating body 6 and engage with the hole 3a of the hour hand wheel 3. A hole 2a is provided in which the object falls at the time.

The rotating body 6 is movable in the axial direction of the indicator wheel 2 and the hour wheel 3.

As shown in the second figure, a first spring piece 7 is in elastic contact with the upper surface of the rotating body 6, and the base end of this spring piece 7 is connected and fixed to a circuit on a printed circuit board (not shown). It is a cantilever supported type.

Next, the specific configuration of the second guide mechanism B will be explained.

A second indicator wheel 20 that meshes with the indicator wheel 2 of the indicator mechanism A is pivotally supported on a support column 1a that is integrally formed with the base plate 1. A second hour hand wheel 30 is provided coaxially with the second hour hand wheel 30, and the number of teeth of the indicator wheel 20 and the hour hand wheel 30 is the same as the number of teeth of the indicator wheel 2 and the hour hand wheel 3, respectively.

Furthermore, a second rotating body 60 having substantially the same configuration as the rotating body 6 is provided on the upper surface of the hour wheel 30, and a protrusion 60a is provided vertically on the rotating body 60. 30a, and can fall into the hole 20a of the reference wheel 20.

A second spring piece 70 is in elastic contact with the upper surface of the rotating body 60, and the spring piece 70 is also cantilevered with its base end fixed to the printed circuit board.

As shown in the second figure, the tip 70a of the spring piece 70 faces the tip 7a of the spring piece 7 so as to be able to come into contact with and separate from the tip 70a, thereby forming a reference switch 9. A stopper 8 can be engaged with the lower surface of the tip 7a of the spring piece 7, as shown in FIGS. 2 and 3.

Further, the second reference mechanism B is set to drop the reference value with a predetermined phase lag, for example, 15 minutes, with respect to the first reference mechanism A.

Specifically, the hour hand wheel 3 and the hour hand wheel 30 have hole portions 3 as hole portions 30 a at the same locations, and the reference wheel 2 and the reference wheel 20 have hole portions 2 a and % holes at the same locations, respectively. 20a is open, hour hand wheel 3.30 and indicator wheel 2
, 20 each have 48 teeth, the hour hand wheel 3 and the hour hand wheel 30 are meshed in the same phase, and the reference wheel 20 is shifted in phase by one tooth (7.5 degrees) with respect to the reference wheel 2. or engage the hour hand wheel 30 with the hour hand wheel 3! 1
The reference wheel 2 and the reference wheel 20 are made to mesh with each other in the same phase by shifting the phase by 7.5 degrees. As a result, the phase between the hole 2a and the hole 20a or between the hole 3a and the hole 30a is shifted by 1@ (7.5 degrees), and the second guide mechanism B is delayed by 15 minutes with respect to the first guide mechanism A. As a result, the standard will fall. Note that the number of teeth on each gear is not limited to 48, and by selecting the number of teeth as appropriate and shifting the phase of each gear by the appropriate number of teeth, it is possible to set the desired guide fall delay time. .

In addition, the guide fall delay time can be set not only by shifting the meshing phase of each gear as described above, but also by shifting the relative opening positions of each hole in each gear. In this case, the standard delay time is not affected by the meshing phase of each gear, so the degree of freedom in setting the standard delay time increases, and it becomes possible to set the standard delay time to a short time, such as 3 minutes or 5 minutes.

Next, regarding the effect of the present invention, FIGS. 1 and 3 (A) to
This will be explained with reference to each figure in (C).

FIG. 1 shows the state before the reference time has been set by the reference car 2 and the reference time has not yet arrived.

At this time, each tip 7a of the spring piece 70 with the spring piece 7.

70a are separated as shown in FIG. 3(A).

When the reference time and the current time match due to the rotation of the hour hand wheel 3,
The protrusion 6a of the rotating body 6 of the guide mechanism A is located in the hole 2a of the guide wheel 2.
In order to fall inwards, that is, to fall as a guide, the tip 7a of the spring piece 7 also moves downward in conjunction with this, and comes into contact with the tip 70a of the knob piece 70, as shown in FIG. At the same time, the guideline Sui Sochi 9 will be closed.

Then, when 15 minutes have passed, the protrusion 60a of the rotating body 60 that is linked to the rotation of the hour hand wheel 30 of the indicator mechanism B falls into the hole 20a of the indicator wheel 20, and as a result, as shown in Fig. 3(C).
As shown in , the tip 70a of the second hook piece 70 is displaced downward;
Therefore, the tip 70a of the spring piece 70 is separated from the tip 7a of the spring piece 7, and the reference switch 9 is opened.

In this way, the indicator switch 9 is opened by the operation linked to the indicator drop of the spring piece 7.

In addition, as another embodiment of the constant speed rotating wheel, the rotating body 6 is omitted and the hour hand wheel 3 itself is provided with a protrusion, and this protrusion is used as the reference wheel 2.
It may be configured such that it can be dropped into the hole 2a. However, in this configuration, since the hour hand attached to the tip of the shaft of the hour wheel 3 moves back and forth in conjunction with the drop of the guide, it is necessary to increase the distance between the dial and the front cover accordingly.

(Effect of the invention) According to the present invention having the above configuration, the guide switch is
Since the alarm is automatically opened within a short time, even if you forget to press the stop button, the battery will not be wasted and the life of the battery can be extended. Also, since the alarm sound does not continue to sound for a long time, it does not disturb those around you.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view thereof, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG.
) to (C) are sectional views each showing the operation of the present invention. A...1st guide mechanism, B...2nd guide mechanism, 2...1st guide wheel, 2a...hole, 3...tJa wheel C1 hour hand table) Constant speed rotating skewer Yunsha 6
...Rotating body 3a...hole, 6a...protrusion, 7...first spring piece, 7a...tip of first spring piece, 20...second indicator wheel, 20a... ...Hole part, 30...Gear (second hour hand wheel) Constant speed rotating wheel 60...
Rotating body 30a...hole 60a...protrusion, 70...second
Spring piece, 70a... Tip of second spring piece, 8II11 middle stopper, 9... Reference switch. that's all

Claims (1)

[Scope of Claims] 1. Consists of a reference wheel that is rotated when setting the reference time, and a constant speed rotary wheel located coaxially with the reference wheel and rotated at a constant speed by a clock mechanism; two sets of guide mechanisms, first and second, in which a protrusion is formed on one side of the guide wheel and the constant speed rotating wheel, and a hole into which the protrusion can fall is formed on the other; and the second guide mechanism. falls with a predetermined phase lag with respect to the first guide mechanism, and first and second springs are displaced in conjunction with the guide fall operations of the first and second guide mechanisms, respectively. An indicator device for a timepiece, comprising: a indicator switch; and an indicator switch that is closed by the first spring element and opened by displacement of the second spring element. 2. The timepiece according to claim 1, wherein the first and second reference mechanisms are interlocked with each other by the reference wheels and the constant speed rotating wheels having the same number of teeth. A guideline device. 3. In claim 1 or 2, both constant speed rotating wheels are rotating bodies having a gear and a protrusion located on the upper surface side of the gear and penetrating the gear so as to be movable in the axial direction. A timepiece characterized in that a hole into which the protrusion can fall is formed in the indicator wheel, and the first and second spring pieces are in elastic contact with both of the rotating bodies, respectively. Reference device. 4. In claim 1 or 3, the first and second spring pieces are supported in a cantilever manner, and the tips thereof face each other so as to be able to move toward and away from each other to form the guide switch. A clock reference device that is characterized by: