JPS6239948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative pendulum device, and particularly to an improvement in the drive mechanism of its pendulum body.

2. Description of the Related Art In recent electronically driven watches using crystal oscillators and the like, decorative pendulum devices that are swung by the driving force of the watch body have been widely put into practical use for decorative purposes.

In this type of decorative pendulum device, the pendulum body is swingably supported by a swing drive board provided on the watch body, and normally, the knife edge of the swing rod body is supported in a V-groove of the swing drive board. It consists of a structure. A pendulum is locked to the lower end of the swing rod body, and the swing rod body and The swinging motion of the pendulum can be sustained.

When the watch body is set vertically correctly, a normal electromagnetic driving force acts between the magnet fixed to the swing rod body and the drive coil provided on the swing drive board, so the swing rod The body is always driven at the center of the swing. Therefore, under normal conditions, good swinging motion of the swinging rod body and pendulum can be obtained.

However, in such conventional devices, when the watch body is set tilted in the left-right direction, the swing rod body is not driven at the center of swing, resulting in irregular drive of the swing rod body, or , the drive itself may become impossible. In other words, when the watch body is set tilted in the horizontal direction with respect to the vertical line, the swing drive board also follows and tilts in the left and right direction, causing the magnet fixed to the swing rod body and the swing drive board to be set. Since a normal electromagnetic driving force does not act between the swing rod and the driven coil, the swing rod body is not driven at the swing center, resulting in irregular swing or inability to swing.

Furthermore, in such a conventional device, when the watch body is set tilted in the front-back direction, the swing rod body is not driven at the center of swing, so the drive of the swing rod body becomes irregular, or , the drive itself may become impossible. In other words, when the watch body is set tilted forward and backward with respect to the vertical line, the swing drive board also follows and tilts back and forth, so the swing rod body is not well supported by the swing drive board. Further, a normal electromagnetic driving force does not act between the magnet fixed to the swing rod body and the drive coil provided on the swing drive board. Therefore, the swing rod body is not driven at the center of the swing, and as a result,
Irregular rocking or inability to rock has occurred.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide an improved decorative pendulum device that can always perform a good swinging motion of the swinging rod body regardless of the set angle of the watch body. It is about providing.

In order to achieve the above object, the present invention includes a vibrating rod body that is swingably supported with respect to a watch body, and an electromagnetic coupling with a magnet or a drive coil provided on the vibrating rod body. The swing rod body and the swing drive board are provided with a drive coil or magnet that generates a driving force and are suspended and supported on the watch body so that its center of gravity always faces in a vertical direction with respect to the watch body. The magnets or drive coils are arranged at a distance in the direction of gravity from their respective swing centers, and when the watch body is in a vertical position, the swing centers of the swing rod body and the swing drive board are The swing rod body is located on a vertical line, and at least one of the abutment surfaces of the swing rod body and the swing drive board in the support portion of the two is formed into a curved surface, so that the drive of the swing rod body is always performed at the center of swing. Features.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

1 and 2 show a first preferred embodiment of a decorative pendulum device to which the present invention is applied, and FIG. 3 shows a cross section of FIG. 1.

In FIGS. 1 and 2, a swing rod body 12 is swingably supported on a swing drive board 10, and a knife edge 12a of the swing rod body 12 is supported in a V-groove 10a of the swing drive board 10. A pendulum (not shown) is locked to the lower end of the swing rod body 12.
Further, a magnet 14 is fixed to the swing rod body 12, and a drive coil 1 is attached to the swing drive board 10, which electromagnetically couples with the magnet 14 to generate a swing driving force in the swing rod body 12.
6 is provided, and the magnet 14 and the drive coil 1
The swing motion of the swing rod body 12 can be maintained by the electromagnetic driving force between the swing rod body 12 and the swing rod body 6.

A characteristic feature of the present invention is that the swing drive board 10 is suspended and supported by the watch body 18 so that its center of gravity always faces in the vertical direction, and the swing drive board 10 is The magnet 14 or drive coil 16 is arranged at a distance from the respective swing centers in the gravity direction, and when the watch body 18 is in a vertical position, the swing rod body 12 and the swing drive board 10 are The center of each swing is located on the vertical line. For this purpose, the V-groove 10b of the swing drive board 10 is swingably supported by the knife edge 18a of the watch body 18.

Furthermore, a characteristic feature of the present invention is that at least one of the abutting surfaces of the swing drive board 10 and the watch body 18 in the support portion thereof is formed into a curved surface. As shown in FIG. 3, the abutment surface 18a' of the knife edge 18a of the watch body 18 is formed into a curved surface.

The first embodiment of the present invention has the above configuration, and its operation will be explained below with reference to FIGS. 4, 5, and 6.

FIG. 4 shows a state in which the watch body 8 is properly set in the vertical direction.

In FIG. 4, since the center of gravity of the swing drive board 10 is oriented in the vertical direction, normal electromagnetic force is generated between the magnet 14 fixed to the swing rod body 12 and the drive coil 16 provided on the swing drive board 10. act. Therefore, as shown by the chain line in the figure, the swinging rod body 12 is always driven at the center of swing, and a good swinging motion of the swinging rod body 12 and the pendulum can be obtained.

Next, FIG. 5 shows a state in which the watch main body 18 is set tilted in the left-right direction.

In FIG. 5, when the watch body 18 is set tilted in the horizontal direction with respect to the vertical line, in the conventional device, the swing drive board 10 also follows and tilts in the horizontal direction. In the embodiment, since the V-groove 10b of the swing drive board 10 is swingably supported by the knife edge 18a of the watch body 18, the swing drive board 1 is supported as shown in the figure.
0 means that the center of gravity is directed vertically. Therefore, since a normal electromagnetic driving force acts between the magnet 14 fixed to the swing rod body 12 and the drive coil 16 provided on the swing drive board 10, as shown by the chain line in the figure, The swinging rod body 12 is always driven at the center of swing, and a good swinging motion of the swinging rod body 12 and the pendulum can be obtained.

FIG. 6 shows a state in which the watch body 18 is set tilted in the front-rear direction.

In FIG. 6, when the watch body 18 is set to be tilted in the front-rear direction with respect to the vertical line, in the conventional device, the swing drive board 10 also follows and tilts in the front-rear direction. In the embodiment, since the contact surface 18a' of the knife edge 18a of the watch body 18 is formed into a curved surface, the swing rod body 1
2 is well supported by the swing drive board 10, and
Since a normal electromagnetic driving force acts between the magnet 14 fixed to the swing rod body 12 and the drive coil 16 provided on the swing drive board 10, the swing rod body 12 is always driven at the center of the swing. A good swinging motion of the swinging rod body 12 and pendulum can be obtained.

As described above, according to the first embodiment of the present invention,
Even if the watch body 18 is set tilted in the left-right direction or the front-back direction, the center of gravity of the swing drive board 10 is oriented vertically, so that the swing rod body 1
2 is always driven at the center of swing, and a good swinging motion of the swinging rod body 12 and pendulum can be obtained.

A second embodiment of the present invention is shown in FIG. 7, in which a pendulum 20 is shown locked to the lower end of the swinging rod body 12. In FIG.

Also in the second embodiment, the same effects as in the first embodiment can be obtained. That is, the eighth
As shown in the figure, even when the watch body 18 is set tilted in the left-right direction, the center of gravity of the swing drive board 10 is oriented vertically. moreover,
Similarly to FIG. 3, the knife edge 1 of the watch body 18
Since the abutment surface of 8a is formed into a curved surface, even when the watch body 18 is set tilted in the front-rear direction, the swing rod body 12 is well supported by the swing drive board 10, and A normal electromagnetic driving force acts between the magnet 14 fixed to the swing rod body 12 and the drive coil 16 provided on the swing drive board 10.
Therefore, the swing rod body 12 is always driven at the center of swing, and a good driving effect of the swing rod body 12 and the pendulum 20 can be obtained. Furthermore, in the second embodiment, since the watch body 18, swing drive board 10, and swing rod body 12 do not overlap, the device has the advantage of being thinner.

FIG. 9 shows a third embodiment of the present invention, in which a swinging rod body 12 is swingably supported on a watch body (not shown), and a knife edge 18a of the watch body is supported on the watch body (not shown).
The V-groove 12b of the swinging rod body 12 is supported. Further, a pendulum 20 is locked to the lower end of the swing rod body 12. Also in the third embodiment, the first
Similar to the embodiment, the swing drive board 10 is suspended from the watch body so that its center of gravity always faces in the vertical direction.
In the embodiment, the knife edge 18 of the watch body
The V-groove 10b of the swing drive board 10 is swingably supported on the swing drive board 10b. Further, the abutting surface of the knife edge 18a of the watch body is formed into a curved surface, and furthermore, the abutting surface of the knife edge 18b of the watch body is formed as a curved surface.

Therefore, the same effects as in the first embodiment can be obtained in the third embodiment as well.

FIG. 10 shows a fourth embodiment of the present invention, and FIG. 11 shows a cross section of FIG. 10. In the third embodiment shown in FIG. 9,
The swing rod body 12 and the swing drive board 10 were swingably supported on the watch body by separate knife edges 18a and 18b, respectively.
In the embodiment, the swing rod body 12 and the swing drive board 10 are swingably supported on the watch body by one knife edge 18a. Further, both of the two contact surfaces of the knife edge 18a are formed into curved surfaces. Therefore, the same effects as in the first embodiment can be obtained in the fourth embodiment as well.

FIG. 12 shows a fifth embodiment of the present invention,
FIG. 13 shows a cross section of FIG. 12, in which a swing rod body (not shown) is swingably supported on the swing drive board 10, and a circular opening 10d formed in the swing drive board 10. A knife edge 12a of the swinging rod body is supported. And also in the fifth embodiment,
As in the first embodiment, the swing drive board 10 is suspended from the watch body so that its center of gravity is always oriented vertically to the watch body.
In the fifth embodiment, the support shaft 18c of the watch body
A circular support frame 10c of the swing drive board 10 is swingably supported. Further, the contact surface of the support shaft 18c is formed into a curved surface, as shown in FIG.

Therefore, in the fifth embodiment as well, the same effects as in the first embodiment can be obtained.

In addition, in the above-mentioned first to fifth embodiments, the contact surface on the watch body side of the contact surfaces of the swing drive board and the watch body in the support part of the two is formed into a curved surface. It is also possible to implement this method by forming the abutting surface on the drive board side into a curved surface, or by forming both the abutting surface on the watch body side and the abutting surface on the swing drive board side into curved surfaces. It is.

As explained above, according to the decorative pendulum device of the present invention, the swing drive board is suspended from the watch body so that its center of gravity always faces in the vertical direction, and the swing rod body and the swing drive The magnets or drive coils on the board are arranged at a distance in the direction of gravity from their respective swing centers, and when the watch body is in a vertical position, the swing centers of the swing rod body and the swing drive board are aligned. It is located on a vertical line, and furthermore, at least one of the abutting surfaces of the swing drive board and the watch body in the support section thereof is formed into a curved surface. Therefore, irrespective of the set angle of the watch body, the swinging rod body is always driven at the center of swing, and a good swinging motion of the swinging rod body can always be obtained.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of the first embodiment of the present invention, FIG. 3 is a cross-sectional view of FIG. 7 is an explanatory diagram of the second embodiment of the present invention, and FIG. 8 is an explanatory diagram of the second embodiment of the present invention.
FIG. 9 is an explanatory diagram of the third embodiment of the present invention, FIG. 10 is an explanatory diagram of the fourth embodiment of the present invention, and FIG. 11 is a sectional view taken along line XI-XI in FIG. 10. , 1st
FIG. 2 is an explanatory diagram of a fifth embodiment of the present invention, and FIG. 13 is a cross-sectional view taken from FIG. 12. Identical members in each figure are given the same reference numerals, and 10...
Swing drive board, 12... Swing rod body, 14... Magnet,
16... Drive coil, 18... Watch body, 18
a′……Abutment surface.

Claims (1)

[Claims] 1. A vibrating rod body that is swingably supported with respect to the watch body, and a drive coil or magnet that is electromagnetically coupled with a magnet or drive coil provided on the vibrating rod body to generate a swing driving force in the vibrating rod body. and a swing drive board that is suspended and supported on the watch body so that its center of gravity always faces vertically, and the magnets or drive coils in the swing rod body and swing drive board are used to control the swinging of each swing rod. They are arranged at a distance from the center in the direction of gravity, and when the watch body is in a vertical position, the respective swing centers of the swing rod body and swing drive board are located on the vertical line, and the swing rod 1. A decorative pendulum device characterized in that at least one of the abutment surfaces of the body and the swing drive board in the supporting part thereof is formed into a curved surface, and the swing rod body is always driven at the center of swing.