JPH0435828Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pendulum clock with an alarm that is applied to a pseudo-pendulum clock that imparts pendulum motion to a pseudo-pendulum by electromagnetic force.

(Prior Art) In recent years, many clocks using pseudopendulums have been seen. In these watches, various ingenuity was put into the shape and movement of the pseudopendulum.

(Problem to be solved by the invention) If there were a pendulum clock that used the movement of this pseudo-pendulum to issue an alarm, it would be even more interesting and increase the product value, but such a clock is currently not available.

(Process of Establishment of the Invention) The present invention was made for the purpose of solving the above-mentioned problems, and skillfully utilizes the structure of a pseudo-pendulum clock.

In other words, a pseudo-pendulum clock generates a certain magnetic force in a drive coil, and generates a repulsive force between it and a magnet attached to the pseudo-pendulum side facing the drive coil, causing a pendulum movement. , the present inventor makes a pseudo-pendulum clock with such a structure increase the amplitude of the pseudo-pendulum at the time of an alarm.

The large amplitude movement causes the phosphorus present on the trajectory to be struck.

We focused on the fact that the problem could be easily solved by adding this requirement, and completed the present invention.

(Means for solving the problem) That is, the present invention is a pendulum clock with an alarm equipped with a pendulum motion imparting circuit that imparts pendulum motion to a pseudo pendulum by electromagnetic force, and a pendulum clock with an alarm is provided at the bottom of the pseudo pendulum. At the same time, a ring is provided at a position where the ball is not hit by the ball except when an alarm occurs, and a resistor is installed in the pendulum motion imparting circuit in order to increase the amplitude of the pseudo-pendulum when an alarm occurs. The present invention provides a pendulum clock with an alarm, which incorporates a normally open branch circuit which is attached only when an alarm occurs.

(Function) According to the above configuration, when an alarm occurs, the normally open branch circuit with a small resistance is closed, a large current flows, the drive coil is greatly excited, the pseudo pendulum swings greatly, and the hitting ball hits the phosphorus and produces a ringing sound. generate.

(Example) Hereinafter, the present invention will be further described in detail based on the drawings showing one example.

FIG. 1 is a front view at normal times, FIG. 2 is a sectional view at the center thereof, FIG. 3 is a pendulum motion imparting circuit, and FIG. 4 is a front view when noise is generated.

In the figure, 1 is a watch body supported on the upper part of the frame body 2, 3 is a pseudo pendulum swingably suspended from the watch body 1, and a drive coil 4 is attached to the back side of the watch body 1. , magnets 5 are attached to positions facing the drive coil 4 on the surface of the pseudo pendulum 3, respectively.

The above-mentioned components are included in all conventional pseudo-pendulum clocks, and the present invention further adds the following components.

In other words, the lower part of the pseudopendulum 3 (lower end in the example)
A hitting ball 3a is fixed to the ball, for example, by screwing, and on the other hand, on the extension of the swinging trajectory of this hitting ball 3a,
For example, the hanging rod 6 that spans between the front and rear frames 2, 2
Further, the amplitude of the pseudo pendulum 3, in other words, the amplitude of the hitting ball 3a, is normally kept small as shown in FIG. As shown in the figure, a circuit 8 for providing a pendulum motion that is controlled to a large extent is housed within the watch body 1.

FIG. 3 shows an example of the pendulum motion imparting circuit 8, in which 9 is a battery, 10 is a resistor, 11 is a transistor, and 12 is a branch connection between the battery 9 and the drive coil 4 with a resistor 10 in between. The resistance value of the circuit 12 is set smaller than the value of the resistor 10, and the circuit 12 further includes:
A switch 13 is provided that is linked to a reference switch (not shown) and is closed only when an alarm occurs. Note that this switch 13 may be a reference switch itself.

Therefore, during normal times, a current flows under the resistor 10 to slightly excite the drive coil 4, and as a result, the amplitude of the pseudo pendulum 3 becomes small. When an alarm occurs (when a sound occurs), the reference switch closes, switch 13 closes, and the current flows to the normally open branch circuit 1.
2, the drive coil 4 is greatly excited, the amplitude of the pseudo pendulum 3 increases, and the ball 3a hits the ring 7.
hit.

(Effects of the invention) As explained above, according to the invention, a conventional pseudopendulum can be used without providing a separate device for generating an alarm in a pseudopendulum clock, and therefore it is possible to use a conventional pseudopendulum. A pendulum clock that generates an alarm can be obtained by simply adding a few configurations to the pseudo-pendulum clock, and together with the fact that it is easy to manufacture, it can immediately meet the demands of consumers.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Figure 1 is a front view in peacetime, Figure 2 is a sectional view of the same, and Figure 3 is a sectional view of the same.
The figure is a circuit diagram for imparting pendulum motion, and FIG. 4 is a front view when a sound (alarm) is generated. 3... Pseudo pendulum, 3a... Hitting ball, 7... Phosphorus, 8... Pendulum motion imparting circuit, 12... Regular branch circuit.

Claims (1)

[Scope of utility model registration request] A pendulum clock with an alarm is equipped with a pendulum motion imparting circuit that imparts pendulum motion to a pseudo-pendulum by electromagnetic force, and a pendulum clock is equipped with a hitting ball at the bottom of the pseudo-pendulum, and a ring that is not hit by the hitting ball except when the alarm is activated. The pendulum is provided at an extended position of the ball's oscillating orbit, and furthermore, in order to increase the amplitude of the pseudo-pendulum in the event of an alarm, a normally open branch circuit with a resistor attached and closed only in the event of an alarm is incorporated in the pendulum motion imparting circuit. A pendulum clock with an alarm.