JPH0410036B2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a double pendulum watch, in particular, a double pendulum watch in which two different pendulums are swingably supported in suspension on a watch body.
This invention relates to an improvement of a double pendulum clock that allows each pendulum to swing independently.

Prior Art Despite the recent trend toward electronic clocks, classic pendulum clocks are preferred as table clocks or wall clocks, and pendulum clocks with built-in pendulums or decorative pendulums are widely used not only as clock devices but also as a type of interior decoration. There is.

In addition, the present applicant has previously proposed a double pendulum clock with two pendulums as a type of pendulum clock of this kind, and by making two different types of pendulums swing, the appearance of the clock can be designed. can provide a variety of

However, in conventional double pendulum clocks, the mechanism for swinging the two pendulums is complicated, and as a result, the device becomes larger.In particular, the increase in thickness due to the drive mechanism makes the clock This has had the problem of severely restricting the appearance.

Modern double pendulum clocks usually use an electromagnetic drive mechanism, and the pendulum is generally driven by using the electromagnetic coupling force between the drive coil provided in the clock body and the drive magnet fixed to the pendulum body. In the conventional device, two sets of such electromagnetic drive mechanisms were provided, making the structure complicated.

Purpose of the Invention The present invention has been made in view of the conventional problems, and its purpose is to provide a simple swinging drive structure,
It is also an object of the present invention to provide a dual pendulum timepiece that enables a timepiece arrangement that is small and thin, and in which two pendulums can reliably swing.

Structure of the Invention In order to achieve the above object, the dual pendulum timepiece of the present invention includes a first pendulum body that is swingably supported on the upper surface of the timepiece body and engages with a first pendulum; A driving magnet provided near the lower end of the rod body is electromagnetically coupled to the driving magnet provided in the watch body, and a first
A drive coil that drives the pendulum, a second swing rod body that is swingably supported on the upper surface of the watch body and in which the second pendulum engages, and an upper end portion of the first swing rod body and the second swing rod body that are connected to each other. It includes interlocking magnets that are fixed at opposite positions and that swing the second swing rod body in accordance with the swing of the first swing rod body by mutual magnetic force. In this way, one pendulum of the dual pendulum of the present invention is subjected to an electromagnetic driving action by a combination of a normal drive coil and a drive magnet, and the other pendulum is subjected to an electromagnetic driving action by each of the two pendulums. The driving action is performed by the mutual magnetic force of the interlocking magnets provided in the watch body, and the first pendulum engages with the upper surface of the watch body, and the second pendulum engages with the first pendulum. The second shaking rod body is pivotally supported, and interlocking magnets are disposed at positions facing each other at the upper ends of the first shaking rod body and the second shaking rod body. As a result, there is an advantage that the entire device can be made smaller and thinner. Furthermore, since the interlocking magnet is installed above the fulcrum of the swinging rod, when the swinging rod is tilted, the weight of the interlocking magnet works to increase the swinging angle of the swinging rod itself, causing the swinging angle of each pendulum to increase. The time required for the pendulum to reach a predetermined angle is shortened, the self-starting characteristics of the pendulum are improved, and a larger swing angle can be obtained.

DESCRIPTION OF EMBODIMENTS Preferred embodiments of the present invention will be described below based on the drawings.

1 and 2 show a preferred embodiment of a double pendulum clock according to the present invention, where the clock main body 10 is made of a crystal clock, and the double pendulums serve as mere ornamental pendulums for the timekeeping function of the clock main body. are driven completely separately. The double pendulum in this embodiment consists of a first pendulum 12 and a second pendulum 14 of different lengths, each of which has a first pendulum pivotably supported on the upper surface of the watch body 10.
It is engaged with the swinging rod body 16 and the second swinging rod body 18. Support bodies 20, 22 are fixed to the upper ends of each of the swing rod bodies 16, 18, and the supports 20, 22 are fixed to the upper ends thereof.
V grooves 20a, 22a provided on the lower surface of 22
By engaging with the knife edge 24 fixed to the watch body 10 described above, both swinging rod bodies 16,1
8 is pivotally supported by the watch body 10 so as to be able to swing freely.

A drive magnet 26 is fixed to the first swing rod body 16 in order to swing the first swing rod body 16 at a predetermined period. A drive coil 28 is fixed at the position, and the drive magnet 26 and the drive coil 28
Due to the electromagnetic coupling with the first swing rod body 16, that is, the first pendulum 12 can be driven to swing.

A characteristic feature of the present invention is that the electromagnetic driving action by the driving magnet 26 and the driving coil 28 is
The driving coil 28 provided in the watch body 10 does not contribute anything to the swinging rod body 16, that is, the first pendulum 12, and to the second swinging rod body 18, that is, the second pendulum 14. In place of
The second swing rod body 18 swings in conjunction with the first swing rod body 16.

That is, an interlocking magnet 30 is fixed to the top of the support 20 fixed to the first swing rod body 16, and a second interlocking magnet 30 is fixed at a position opposite to this interlocking magnet 30.
An interlocking magnet 32 is fixed to the top of the support body 22 fixed to the swing rod body 18. Therefore, a mutual magnetic force acts between both the interlocking magnets 30 and 32, and the second vibrating rod body 18 follows and interlocks with the swinging of the first vibrating rod body 16 due to this mutual magnetic force. I can do it.

Therefore, according to the present invention, there is no need to provide any device on the second pendulum body 18, that is, the second pendulum 14 side, for magnetically coupling with the timepiece main body 10. To obtain a small and thin double pendulum clock without increasing the thickness of a main body 10. Furthermore, since the first swinging rod body 16 and the second swinging rod body 18 are pivotally supported on the upper surface of the watch body 10, they do not overlap with the watch body and can be made thinner. Further, the interlocking magnets 30 and 32 are also provided at the upper ends of the first shaking rod body 16 and the second shaking rod body 18, respectively, so that the arrangement interval of the shaking rod bodies can be made smaller.
It can be made thinner and smaller.

In addition, since the interlocking magnet is installed above the fulcrum of the swinging rod, when the swinging rod is tilted, the weight of the interlocking magnet works to increase the swing angle of the swinging rod itself, causing the vibration of each pendulum. The time required for the angle to reach a predetermined angle is shortened, the self-starting characteristics of the pendulum are improved, and a larger swing angle can be obtained.

Furthermore, as shown in FIGS. 1 and 2, the second pendulum 14 is shorter than the first pendulum 12, so the response of the second pendulum by the interlocking magnets 30, 32 is faster, and the second pendulum's self-response is faster. The starting performance is good, and even when the magnetic force between the interlocking magnets 30 and 32 is small, the second pendulum follows the first pendulum well.

FIG. 3 shows the arrangement of the above-mentioned interlocking magnets 30 and 32 when the pendulum is stationary.
32 are closest in their rest position, and in this state mutual magnetic forces act to produce the desired interlocking motion.

In the present invention, the pole arrangement of both the magnets 30 and 32 can be arbitrarily selected, but if the pole arrangement is arranged in a manner in which the poles are opposite to each other as shown in FIG. If the magnet 30 on the driving side moves to the left as shown by the solid arrow line in Figure 4, the magnet 32 on the driven side will also move in the same direction, and conversely, if the magnet 30 on the driving side moves to the right, The driven magnet 32 also moves to the right as shown by the broken line.

Therefore, in a timepiece with different polarity facing magnet arrangement as shown in FIG. 4, the two pendulums oscillate in the same phase, and this state is shown in FIG. will oscillate in the same phase in a state where they are almost overlapped.

On the other hand, when both the magnets 30 and 32 are arranged with the same poles facing each other as shown in FIG. The rod bodies 16 and 18 swing in opposite directions to obtain the pendulum swinging state shown in FIG.

Effects of the Invention As explained above, according to the present invention, the first oscillating rod body is electromagnetically driven by the drive coil provided in the watch body, while the second oscillating rod body is driven by the first oscillating rod body. A swinging motion can be performed by magnetic coupling with the swinging rod body, thereby simplifying the electromagnetic drive mechanism. Furthermore, by devising the pivot positions of the first swinging rod body and the second swinging rod body and the arrangement positions of their respective interlocking magnets, it is possible to make the device as a whole smaller and thinner. Therefore, according to the present invention, it is possible to achieve various effects such as being able to arbitrarily select the case or exterior design while providing diversity in design, particularly dynamic changes. In addition, since the interlocking magnet is installed above the fulcrum of the swinging rod, when the swinging rod is tilted, the weight of the interlocking magnet works to increase the swinging angle of the swinging rod itself, causing the swinging angle of each pendulum to increase. The time required for the pendulum to reach a predetermined angle is shortened, the self-starting characteristics of the pendulum are improved, and a larger swing angle can be obtained.

[Brief explanation of drawings]

FIG. 1 is a rear view of the main parts of a preferred embodiment of the dual pendulum timepiece according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a diagram showing the arrangement of interlocking magnet pairs in this embodiment. A perspective view of the main part, Figures 4 and 5 are explanatory diagrams showing the pole arrangement of interlocking magnets and their mutual magnetic action, Figures 6 and 7 are
The figure is an explanatory diagram of the operation in the swinging state of this embodiment. 10... Clock body, 12... First pendulum, 14...
...Second pendulum, 16...First pendulum body, 18...Second
Vibrating rod body, 26... Drive magnet, 28... Drive coil, 30... Interlocking magnet, 32... Interlocking magnet.

Claims (1)

[Scope of Claims] 1. A first swinging rod body that is swingably supported on the upper surface of the watch body and engaged with a first pendulum, and a driving magnet provided near the lower end of the first swinging rod body. , provided in the watch body and electromagnetically coupled to the drive magnet to connect the first
a drive coil that drives the pendulum; a second swing rod body that is swingably supported on the upper surface of the watch body and engages with a second pendulum; and upper end portions of the first swing rod body and the second swing rod body. and interlocking magnets which are fixed oppositely to each other in opposing positions and which cause the second vibrating rod body to swing in accordance with the rocking of the first vibrating rod body by mutual magnetic force. 2. The double pendulum clock according to claim 1, wherein the second pendulum is shorter than the first pendulum.