JPS628542Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pendulum mechanism for a watch, and particularly in a pendulum mechanism in which the pendulum swings by electromagnetic drive, two types of pendulum mechanisms can be obtained with one pendulum.

Conventionally, there have been two types of electromagnetically driven pendulum mechanisms: a single pendulum type and a double pendulum type.

FIG. 1 is a front view of a conventional single pendulum type mechanism, and FIG. 2 is a side view.

The swing rod 1 is a swing rod support part 8 provided on the watch body 6.
It is swingably supported by the swinging rod fulcrum part 2 relative to the swinging rod fulcrum part 2. A driving magnet 5 is fixed below the fulcrum part 2 of the swinging rod 1, and a swinging ball locking part 3 is provided at the lower end, and a swinging ball 4 can be attached to and removed from the locking part 3. Possibly fixed.

An electromagnetic coil 7 is fixed to the watch body 6 at a position corresponding to the drive magnet 5 of the swing rod 1, and the swing rod 1 swings as a pendulum around a fulcrum a due to the action of the drive magnet 5 and the electromagnetic coil 7. make a move.

The pendulum period in this simple pendulum type mechanism depends on the distance h from the swinging rod fulcrum a to the center of gravity of the swinging ball 4.

In the past, pendulum mechanisms were used in relatively large clocks, but recently pendulum mechanisms have also been installed in small table clocks. In such a small pendulum clock, the distance from the fulcrum of the swinging rod to the center of gravity of the swinging ball is naturally short, and in the single pendulum type mechanism, the period is extremely fast. However, in reality, a design with a slow cycle is required. In such a case, the following double pendulum type mechanism will be used.

FIG. 3 is a front view of the double pendulum type mechanism, and FIG. 4 is a side view.

The swinging rod 10 is swingably supported by a swinging rod fulcrum portion 11 with respect to a swinging rod support portion 17 provided on a watch body 15. A swinging ball locking portion 12 is provided at the lower end of the swinging rod 10, and a swinging ball 13 is removably fixed to the locking portion 12. On the other hand, a driving magnet 14 is fixed above the fulcrum b of the swinging rod 10.

An electromagnetic coil 16 is fixed to the watch body 15 at a position corresponding to the drive magnet 14 fixed above the fulcrum b of the swing rod 10. The action causes the pendulum to swing around the fulcrum b.

In this double pendulum type mechanism, a mass corresponding to the swinging ball is required on the opposite side of the fulcrum from the swinging ball, that is, above the fulcrum. Therefore, if the driving energy of the swinging rod is taken into account, the driving magnet will be positioned above the fulcrum.

The pendulum period in this double pendulum type mechanism depends on the moment of inertia of the entire pendulum and the position of the center of gravity. Therefore, even in a relatively small pendulum mechanism, the pendulum period can be increased.

As explained above, the single pendulum type mechanism and the double pendulum type mechanism have to be completely different mechanisms because the driving magnet is located opposite to the fulcrum.

The purpose of the present invention is to provide two pendulum mechanisms, which were conventionally completely different, using one pendulum.

In order to achieve the above object, the present invention provides an electromagnetic coil device in which a swinging rod is swingably hung on a swinging rod support provided in the watch body, and an electromagnetic coil device provided in the watch body.
In a pendulum mechanism, a pendulum ball fixed to the lower end of the rod is oscillated by the electromagnetic biasing action of a permanent magnet installed on the rod, and the swing ball is fixed to the lower end of the rod. The rod is characterized by having circular holes and permanent magnets as fulcrums for swinging the rod arranged at intervals, and locking parts for removably fixing the ball at both ends of the rod in the longitudinal direction. do.

Embodiments of the present invention will be described below based on the drawings.

FIG. 5 is a front view of a swinging rod according to an embodiment of the present invention, and FIG. 6 is a side view.

In the figure, the fulcrum part 22 of the swinging rod 20 is a circular through hole 2.
2a, and a permanent magnet 23 is fixed at a position separated from the fulcrum portion 22 by a certain distance. This swinging rod 20 has two directions opposite to the fulcrum part 22.
In other words, the end of the swinging rod fulcrum part 22 and the permanent magnet 2
Locking portions 21 and 24 for removably fixing the swinging ball are provided at two locations, at the end of the fixing portion 3 and 3, respectively.

FIG. 7 is a front view and FIG. 8 is a side view of the pendulum according to the embodiment of the present invention when it is used as a single pendulum type mechanism.

The swinging rod 20 has a circular through hole 22a in the swinging rod fulcrum part 22.
is swingably supported by the watch body 30 by inserting it into a swing rod support portion 32 provided on the watch body 30. At this time, the circular through hole 22a of the swing rod fulcrum part 22, the swing rod support part 32 of the watch body 30,
is in contact with the permanent magnet 23 of the circular through hole 22a on the opposite side 22b. For this reason, the swing rod is 20
performs a pendulum swing using the fulcrum 22b, and the permanent magnet 23 is positioned below the fulcrum 22b. An electromagnetic coil 31 is fixed to the watch body 30 at a position corresponding to the permanent magnet 23.

The swinging ball 25 is removably fixed to a swinging ball locking part 24 provided at the end of the fixed part of the permanent magnet 23 of the swinging rod 20.

In this way, the swinging ball 25 is placed on the permanent magnet 2 of the swinging rod 20.
By being fixed to the locking part 24 provided at the end of the fixed part of the permanent magnet 23, the permanent magnet 23 is located below the swinging rod fulcrum 22b, so that it acts as a single pendulum type mechanism.

Figure 9 is a front view of the pendulum type mechanism used in the embodiment of the present invention;
The figure is a side view.

In the figures, the same parts as in FIGS. 7 and 8 are given the same numbers.

The swinging rod 20 has a circular through hole 22a in the swinging rod fulcrum part 22.
is swingably supported by the watch body 40 by inserting it into a swing rod support portion 42 provided on the watch body 40. At this time, the circular through hole 22a of the swinging rod fulcrum part 22, the swinging rod support part 42 of the watch body 40,
is the side 2 of the circular through hole 22a in the same direction as the permanent magnet 23
Contact is made at 2c. For this reason, the swing rod 20 is 22c.
The pendulum swings using the fulcrum 22c, and the permanent magnet 23 is positioned above the fulcrum 22c. An electromagnetic coil 41 is fixed on the watch body 40 at a position corresponding to the permanent magnet 23, and the swinging ball 25 is attached to and detached from the swinging ball locking part 21 provided at the end of the fulcrum part 22 of the swinging rod 20. Possibly fixed.

In this way, the furidama 25 is
By being fixed to the swinging ball locking portion 21 provided at the end, the permanent magnet 23 is located above the swinging rod fulcrum 22c, so it acts as a double pendulum type mechanism.

As described above, according to this embodiment, since the swinging ball locking parts are provided at two locations in the opposite direction to the fulcrum part of the swinging rod, and the swinging rod fulcrum part is made into a circular through hole, the swinging rod can be turned upside down. Since the pendulum can be hung on the clock body, two types of pendulum mechanisms can be obtained with one pendulum.

As described above, according to the present invention, in a device that performs pendulum swinging by electromagnetic drive, with one swinging rod,
Since two types of pendulum mechanisms can be obtained, the versatility of parts is increased, which is effective in terms of cost and parts management.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional single pendulum type mechanism, Fig. 2 is a side view of Fig. 1, Fig. 3 is a front view of a conventional double pendulum type mechanism, Fig. 4 is a side view of Fig. 3, Fig. 5 is a front view of the pendulum according to the embodiment of the present invention, Fig. 6 is a side view of Fig. 5, and Fig. 7 is a front view of the pendulum according to the embodiment of the present invention when it is used as a single pendulum type mechanism. 8 is a side view of FIG. 7, FIG. 9 is a front view of the pendulum in the embodiment of the present invention when used as a compound pendulum type mechanism, and FIG. 10 is a side view of FIG. 9. 20...Swinging rod, 21, 24...Swinging ball locking part, 2
2... Swing rod fulcrum part, 22a... Circular through hole, 22
b, 22c... fulcrum, 23... permanent magnet, 30,
40... Watch body, 31, 41... Electromagnetic coil,
32, 42... swinging rod support section.

Claims (1)

[Scope of utility model registration request] The swing rod, which is swingably hung on the swing rod support provided on the watch body, is activated by the electromagnetic biasing action of the electromagnetic coil device provided on the watch body and the permanent magnet provided on the swing rod. In a pendulum mechanism that makes a pendulum movement of a swinging ball fixed to the lower end of a swinging rod, a circular through hole and a permanent magnet are spaced apart from each other as a swinging fulcrum of the swinging rod, which is hung on the swinging rod support part. Place the
The pendulum clock's swinging rod structure is further characterized in that locking parts for removably fixing the swinging ball are provided at both ends of the swinging rod in the longitudinal direction.