JPH11253663A - Clock accessory rocking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clock accessory rocking mechanism of a small size and simple structure to rock an accessory with optional cycle such as extending a rocking cycle corresponding to various accessories provided for a clock body, or the like. SOLUTION: The clock accessory rocking mechanism for rocking the accessory 14 assembled to the clock body 10 is provided with a rocking rod 20 having a driving magnet 22 and rockably supported by a supporting point 31 formed below a centroid 30. The mechanism is further provided with stoppers 21 for stopping the falling down of the rod 20 beyond a rocking range on the right and left of the rod 20 and additionally provided with a driving coil 23 for driving the rod 20 by giving force to the magnet 22 attached to the rod 20 and with a control circuit for controlling a current to flow through the coil 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative body swinging mechanism for a timepiece, and more particularly, to a swinging mechanism for swinging a decorative body provided on a table clock or a wall clock at an arbitrary cycle. It relates to a dynamic mechanism.

[0002]

2. Description of the Related Art Conventionally, clock bodies such as table clocks and wall clocks have been provided with a decorative body that swings right and left as a kind of decorative body. As one of the clock bodies provided with such a decorative body, a clock body 10 provided with a decorative window 12 below a dial 11 as shown in FIG. Some are provided with a decorative body 14.

As an example of the ornamental body swinging mechanism for a timepiece, as shown in FIG. 7, there is provided a pendulum shaft 40 which can be easily swung only to the right and left, and the ornamental body 14 is attached to the pendulum shaft 40. At the same time, a swing magnet 41 is attached to the pendulum shaft 40 to prevent the swing of the pendulum shaft 40 from being attenuated and stopped, and further, a swing coil for attracting and repelling the swing magnet 41.
42 is provided.

[0004] The pendulum shaft 40 has a support point 31 above the center of gravity 30 of the movable part including the decorative body 14 and the oscillating magnet 41.
The support point 31 is supported by the support shaft 32, so that the pendulum shaft 40 can pivot only to the left and right. A permanent magnet as a swing magnet 41 is attached to the lower end of the pendulum shaft 40, and swings when the pendulum shaft 40 swings right and left on a vertical line passing through the support shaft 32. On the background plate 13 near the position where the magnet 41 passes, a swing coil 42 in which a detection coil 43 is
Is attached.

An electromagnetic oscillating circuit (not shown) is provided in the watch body 10 and based on an induced voltage generated by the oscillating magnet 41 in the detecting coil 43 when the oscillating magnet 41 passes near the detecting coil 43. Then, a predetermined current is caused to flow through the oscillating coil 42 by the electromagnetic oscillating circuit, so as to apply an attractive repulsive force to the oscillating magnet 41 in accordance with the oscillation of the pendulum shaft 40. As described above, the conventional decorative body rocking mechanism for a timepiece includes the rocking coil 42.
By exerting a slight suction repulsion force on the swing magnet 41, the swing of the pendulum shaft 40 is prevented from attenuating, the swing of the pendulum shaft 40 is maintained, and the decorative body 14 attached to the pendulum shaft 40 is moved left and right. I was swinging.

The oscillating magnet 41 is not limited to the case where it is attached to the lower end of the pendulum shaft 40, but is attached to an appropriate location such as the upper end of the pendulum shaft 40, and has a detection coil 43 in accordance with the position of the oscillating magnet 41. The swing coil 42 is attached to the background plate 13 or the like.

[0007]

As described above, a drive mechanism for swinging a decorative body, which is a mechanism for swinging a watch decorative body having a pendulum shaft, utilizes the principle of a pendulum. In addition, the decorative body can be easily swung at a constant cycle. In other words, in the swing mechanism of the decorative body for a timepiece, the swing cycle of the pendulum shaft is unique to the swing mechanism to which each decorative body is attached. Then, by applying a slight attractive repulsive force to the swing magnet provided on the pendulum shaft in accordance with the inherent swing cycle of the movable portion including the decorative body, the swing of the pendulum shaft and the decorative body is attenuated. It was something that was prevented.

As described above, since the decorative body has a peculiar swing cycle, the distance between the fulcrum and the center of gravity must be increased in order to make the swing cycle longer and move left and right slowly. In addition, there is a drawback that it is difficult to provide a small decorative body driving mechanism. Although it is possible to lengthen the swing period inherent to the pendulum shaft by balancing the weight, the center of gravity, the position of the support point, and the like of the pendulum shaft, the speed at which the swing magnet passes near the detection coil is reduced. Due to the delay, the induced voltage generated in the detection coil decreases, and it may be difficult for the electromagnetic oscillation circuit to detect the induced voltage. For this reason, in some cases, it is impossible to control the flow of current to the swing coil so as to apply an attractive repulsive force to the swing magnet in accordance with the swing of the pendulum shaft.

By the way, there is a demand for a watch decoration body swinging mechanism for swinging the decoration body at an arbitrary cycle, such as lengthening the cycle of swinging left and right in accordance with various decoration bodies provided in the watch body. ing. In view of the above, the present invention provides a timepiece decorative body swinging mechanism that can swing the decorative body right and left at an arbitrary cycle.

[0010] Further, since the ornamental body swinging mechanism for a timepiece can be attached to a table clock or a wall clock, it is also desirable that the mechanism be small in size and have a simple structure. The present invention responds to such a demand. An object swing mechanism is provided.

[0011]

SUMMARY OF THE INVENTION The present invention relates to a watch decoration body swinging mechanism for swinging a swingable decoration body incorporated in a watch body to the left and right, comprising a driving magnet, and ,
It has a swinging bar supported to be able to swing to the left and right by a support point provided below the center of gravity, and also to the left and right of the swinging bar to stop the swinging bar from falling over the swing range The swing mechanism includes a stopper, and further includes a drive coil that applies a force to a drive magnet included in the swing rod to drive the swing rod, and includes a control circuit that controls a current that flows through the drive coil. Things.

As described above, by providing the supporting point provided below the center of gravity with the swinging rod supported so as to be able to swing right and left, the swinging movement is not limited to a fixed cycle, but is made to move right and left. The decorative body attached to the rod and the swinging rod can be swung. Also, by providing stoppers on the left and right of the swinging rod, the swinging rod whose center of gravity is above the support point is prevented from falling over the swinging range, and further, a control circuit is provided,
The current flowing through the drive coil can be arbitrarily controlled.

That is, when an electric current is applied to the drive coil, the swinging rod, which has been stopped by the stopper in an inclined state, is operated so as to be raised and is stopped by the stopper at the opposite position, and the swinging rod is rotated at an arbitrary cycle. The swinging movement can be performed, and the decorative body supported by the swinging rod can be swingably moved left and right at an arbitrary cycle. Further, according to the present invention, the drive coil for driving the swinging rod is located on a vertical line passing through the supporting point of the swinging rod, and is positioned at a position where the drive magnet passes when the swinging rod swings right and left. It will be provided in the vicinity.

As described above, the drive coil is provided on the vertical line passing through the support point of the swinging rod and near the position where the drive magnet passes when the swinging rod swings right and left. This makes it possible to drive the swinging rod with one drive coil. Therefore, it is possible to provide a small and simple structure for swinging a watch decoration body.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a watch decorative body swinging mechanism according to the present invention is a watch body 10 having a decorative window 12 below a dial 11, as shown in FIG. This is for swinging the swingable decorative body 14 provided inside 12 to the left and right. As shown in FIGS. 2 and 3, this clockwork decoration body swinging mechanism includes a swinging rod 20 for supporting the decoration 14 and a stopper for preventing the swinging rod 20 from falling over the swinging range. 21, a drive coil 23 for applying a force to a drive magnet 22 provided in the swinging rod 20 to drive the swinging rod 20;
And a control circuit (not shown) for controlling a current flowing through the control circuit.

The swinging rod 20 has a rod shape, and the decorative body 14 is attached to an upper portion thereof.
A permanent magnet as a drive magnet 22 is provided at or near the lower end of the motor. The swinging rod 20 is provided with a support point 31 below the center of gravity 30 of the movable part including the decorative body 14 and the driving magnet 22, and swings only to the left and right by a support shaft 32 fixed to the background plate 13. The support point 31 is supported as possible.

A stopper 21 is provided for stopping the swinging rod 20 from falling over the swinging range. It is provided so as to protrude forward from 20. The range in which the swinging rod 20 is tilted right or left and stops in contact with the stopper 21 is defined as the swinging range of the swinging rod 20.

The drive coil 23 applies a force to the drive magnet 22 of the swing rod 20 to drive the swing rod 20, and is on a vertical line passing through the support shaft 32, and
It is attached to a background plate 13 near the position where the drive magnet 22 passes when the swinging rod 20 swings left and right. Although not shown, the control circuit controls the drive coil 23 so that a pulsed current is applied to the drive coil 23 so that the current flows for a short time at every set time.

Next, the operation of the watch body swinging mechanism according to the present invention is shown in FIGS. Since the swinging rod 20 is supported at a support point 31 provided below the center of gravity 30 so as to be able to swing right and left by a support shaft 32, the center of gravity 30 of the swinging rod 20 is positioned vertically above the support shaft 32. Even if it is tilted to the right or left,
Stops in contact with a stopper 21 provided on the left or right side of.

The center of gravity 30 is the center of gravity of the movable part, which is the swinging rod 20 having the decorative body 14 and the driving magnet 22. As shown in FIG. 4, for example, when the swinging rod 20 is tilted to the right, in a state where a part of the swinging rod 20 is in contact with the right stopper 21 and stops, the driving magnet 22 is attracted. When a current is applied to the drive coil 23 so as to exert a force, the tilted swinging rod 20 is caused by a magnetic force as shown in FIG.

As described above, when the swinging rod 20 rises and the current to the drive coil 23 is cut off when the center of gravity 30 of the swinging rod 20 passes through the vertical line passing through the support shaft 32, the swinging rod is moved by inertia. As shown in FIG. 5 (B), the swinging rod 20 is tilted to the left as shown in FIG.
Is stopped in contact with the left stopper 21. Further, when a current is applied to the drive coil 23 so as to exert an attractive force on the drive magnet 22 in a state where the tilted rocking rod 20 is tilted to the left and stopped, as shown in FIG. FIG.
(A), the drive coil 23 is moved when the center of gravity 30 of the swinging rod 20 passes through a vertical position passing through the support shaft 32.
When the current to the motor is cut off, the swinging rod 20
Over the vertical line passing through the
20 leans right and comes into contact with the right stopper 21 and stops.

By repeating the left and right operations as described above, the swinging rod 20 can be swung right and left at an arbitrary cycle. The swing can be arbitrarily set without having a natural period by setting the interval of the pulse current applied to the drive coil 23 by the control circuit.

Therefore, by the setting of the control circuit, the swing can be performed at a cycle of 2 seconds or 5 seconds, and the cycle of the swing can be freely set to be long. Further, the energization of the drive coil 23 is limited to a short time only when the swinging rod 20, that is, the decorative body 14 is rocked, and this is repeated. It can be operated with less power consumption than a motor or the like that requires constant power supply.

Therefore, the life of the battery can be extended, and a drive mechanism suitable for a clock body such as a wall clock or a clock can be provided. Further, since the drive coil 23 is mounted on a vertical line passing through the support shaft 32 and near a position where the drive magnet 22 passes when the swinging rod 20 swings left or right, 1 The swing rod 20 can be swung by the drive coils 23, and the number of components can be reduced.

It is to be noted that, unlike the above-described embodiment, one drive coil 23 is provided outside the position of the drive magnet 22 when the swinging rod 20 is tilted to the right or left and stopped, that is, two drive coils are provided. The drive coil 23 may be provided in some cases. In this case, the drive coil 23
By causing a current flowing through the drive magnet 22 to exert a repulsive force on the drive magnet 22, the inclined swinging rod 20 can be caused by the repulsive force. By repeating such an operation, it is not necessary to accurately set and control the pulse width of the pulse current applied to the drive coil 23, and it is possible to swing the swinging rod 20 right and left by simple control. it can.

The swinging rod 20 is not limited to a rod shape, but may be a curved one.
May be integrally formed. Further, the portion provided with the drive magnet 22 is not limited to the lower end of the swinging rod 20, but may be provided at the upper end of the swinging rod 20 or the like. The stopper 21 is not limited to the position below the support shaft 32 as shown in the present embodiment, but may be provided above the support shaft 32 in some cases.

Also, in the present embodiment, the decorative body 14 is
Although the case where the decorative body 14 is provided on the dial 11
In some cases, and is not limited to the case provided in the decorative window 12. Further, the present embodiment shows the case of a table clock, but may be used for a wall clock or the like.

[0028]

According to the first aspect of the present invention, since the supporting point provided below the center of gravity is a swinging rod supported so as to be able to swing, the swinging rod is not limited to a fixed cycle. A watch decoration body swinging mechanism that can easily swing and move can be provided. Stoppers are provided on the left and right sides of the swinging rod so that the swinging bar whose center of gravity is above the support point does not fall out of the swinging range. Can be arbitrarily set, so that the swinging rod can be swung right and left at an arbitrary cycle.

According to a second aspect of the present invention, the driving magnet passes on a vertical line passing through the supporting point of the swinging rod and passes when the swinging rod swings right and left. With the provision of the drive coil, the swing rod can be driven by one drive coil, and a small and simple ornamental body swing mechanism for a timepiece can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing a timepiece body provided with a watch decoration body swinging mechanism according to the present invention.

FIG. 2 is a front view showing the ornamental body swinging mechanism according to the present invention.

FIG. 3 is a side view showing a watch decorative body swinging mechanism according to the present invention.

FIG. 4 is a front view showing the ornamental body swinging mechanism according to the present invention.

FIG. 5 is a front view showing an operation state of the watch decoration body swinging mechanism according to the present invention.

FIG. 6 is a front view showing a watch body provided with a conventional watch decoration body swinging mechanism.

FIG. 7 is a front view showing a conventional watch decoration body swinging mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Watch body 11 Dial 12 Decorative window 13 Background plate 14 Decorative body 20 Swing rod 21 Stopper 22 Drive magnet 23 Drive coil 30 Center of gravity 31 Support point 32 Support shaft 40 Pendulum shaft 41 Swing magnet 42 Swing coil 43 Detecting coil

Claims (2)

[Claims] 1. A swing mechanism for swinging a decorative body incorporated in a timepiece, comprising: a swing rod having a driving magnet and swingably supported by a support point provided below a center of gravity. In addition, a stopper is provided on the side of the swinging rod to stop the swinging rod from falling out of the swinging range. A watch body swinging mechanism having a drive coil for driving a moving rod and a control circuit for controlling a current flowing through the drive coil. 2. A drive coil for driving a swinging rod is provided on a vertical line passing through a supporting point of the swinging rod and near a position where a driving magnet passes when the swinging rod swings. The watch decorative body swinging mechanism according to claim 1, wherein the mechanism is provided.