JPH0236394A - Structure of pendulum clock - Google Patents

Abstract

PURPOSE:To shorten the length over the entire part and to reduce the size by providing a movable magnet disposed to the bottom of the clock, an electromagnet which periodically attracts and repulses the movable magnet and an outside frame body and supporting plate which pivotally support the mechanical body of the clock freely oscillatably. CONSTITUTION:The mechanical body 1 of the clock rotates the hand 2 and is fixed to the clock body 3. The hand 2 consists of the hour hand 2a, the minute hand 2b and the second hand 2c and is coated with a front cover 4. The body 3 is freely oscillatably supported by pivotally supporting the mechanical body 1 and shaft parts 1a, 4a provided in the central part of the cover 4 to a transparent cover 6 of the outside frame body 5 and bearings 6a, 7a of the supporting plate 7. The body 3 is fixed with the movable magnet 8 at the bottom end. Oscillating signals 3a, 3b are provided to the body 3 near the oscillating signal hole 5a of the outside frame body 5 and are divided to two colors, right and left with the center line as a boundary. The cover 4 consists of a transparent body and is fitted to the body 3. The cover 4 and the shaft parts 4a, 1a of the mechanical body 1 freely fit the columnar shaft part 4a to a container-shaped bearing part 6a. Since the conventional pendulum, etc., are not used, the length over the entire part is shortened and the size is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a pendulum timepiece in which a timepiece body equipped with a timepiece mechanical body swings.

[Conventional technology]

Traditionally, clocks with a pseudo-pendulum device were made in 1983.
As disclosed in Publication No. 0783, a fixed coil is provided in the watch body and a movable magnet is provided in the pseudo-pendulum, and the pseudo-pendulum is caused to swing by alternately generating an attractive magnetic field and a repulsive magnetic field in the fixed coil. There is. Vibrating members include swinging rods, grip balls,
A pseudo pendulum, which is a movable magnet and does not swing, is attached to the watch body and is hung on the watch body.

[Problem that the invention seeks to solve]

In the pendulum clock having the above-mentioned conventional pseudo-pendulum device or the like, a swinging rod and a ball are suspended from the lower part of the clock body and are oscillated. For this reason, the pendulum clock having the Wi-like pendulum device has a problem in that the overall length is longer and larger than the clock mechanical body.

Means for Solving Problem C] The present invention comprises: (1) a watch body equipped with a watch mechanical body; a movable magnet disposed at the bottom of the watch body; and (2) periodically attracting and repelling the movable magnet. A structure of a small pendulum clock is provided by comprising an electromagnet for the clock, and an outer frame body and a support plate that are equipped with the electromagnet and pivotally support the clock body and the clock mechanical body in a swingable manner. It is.

[For production]

The main body of the watch, to which the movable magnet is fixed, is swung by an attractive magnetic field and a repelling magnetic field that are alternately generated by the electromagnet. The watch body with the watch mechanical body attached swings like a pendulum. For this reason,
There is no need for a swinging rod and a ball that are hung on the clock mechanical body, which are essential parts of a conventional pendulum clock. Therefore, the length of the entire pendulum clock can be shortened and the pendulum clock can be made smaller.

〔Example〕

Hereinafter, the structure of the pendulum clock according to the present invention will be explained in detail based on the accompanying drawings.

Reference numeral 1 denotes a watch mechanical body for rotating the pointer 2, which is fixed to the watch body 3. The hands 2 consist of an hour hand 2a, a minute hand 2b, and a second hand 2c, and the watch body 3, which is covered by a front cover 4, has a shaft portion 1a protruding from the center of the watch mechanism body 1 and the front cover 4. 4a is rotatably supported by the transparent cover 6 of the outer frame 5 and the bearings 6a, 7a of the support plate 7, so that it can move freely. The watch body 3 has a movable magnet 8 fixed to its lower end. 3a, 3
b is a swinging mark provided on the watch body 3 near the swinging mark hole 5a of the outer frame 5;
It is color coded. The front cover 4 is made of a transparent material and is fitted onto the hour hand body 3.

The front cover 4 and the shaft portion 4a of the watch mechanical body 1.

1a exists on the line of the cylindrical shaft portion 4a, as shown in FIG. The shaft portions 4a, la have wedge-shaped lower portions, and have lower ends aligned with the axis t of the pointer 2, as in the second embodiment shown in FIG. 5 and the third embodiment shown in FIG. They may be arranged in a straight line.

The shaft portion 4b of the second embodiment in FIG. 5 has a pentagonal prism shape with a wedge-shaped lower portion, and the contact point of the lower end portion with the shaft receiving portion 6b is located on the fine point 3 of the pointer 2. The bearing portion 6b has a cylindrical shape and is loosely fitted to the shaft portion 4b. The shaft portion 4c of the third embodiment shown in FIG. 6 has a wedge shape with an acute angle at the bottom and a fan shape in the direction. The outer frame body 5 is
This is a case body that holds a watch body 3 that vibrates like a pendulum, and has a transparent cover 6 fixed to the front surface and a support plate 7 fixed to the back surface. The swing marker hole 5a is bored on the centerline of the outer frame 5. The outer frame body 5 has an electromagnet 9 inside the lower box part 5b.
, a printed circuit board 10° drive circuit 11, a dry cell battery 12, and the like. The electromagnet 9 is a magnet for swinging the watch body 3 by attracting and repelling the movable magnet 8 made of a permanent magnet. A printed circuit board 10 is provided below the electromagnet 9, and electronic components of a drive circuit 11 are welded thereto. The drive circuit 11 is a circuit for changing the direction of the current flowing to the electromagnet 9 and changing the magnetic field generated by the electromagnet 9 at a rate of 1, and includes a transistor and an electrolytic capacitor.

It is composed of electrical elements such as magnetic capacitors and resistors.

The structure of the pendulum clock according to the present invention is as described above, and the primary function will be explained in detail.

When no magnetic field is generated in the electromagnet 9, Figs. 2 and 3
It is in the state shown in the figure. Since no magnetic field is generated in the electromagnet 9, the clock mechanical body 1 is.

It does not oscillate and remains stationary. Swing mark hole 5a of outer frame body 5
, left and right swing marks fi3a and 3b appear.

When periodic currents flowing in different directions flow through the electromagnet 9, the movable magnet 8 is attracted to the electromagnet 9.

A repelling magnetic field is generated periodically. The magnetic field causes the watch body 1 to swing left and right like a pendulum around the shaft parts 1a and 4a. FIG. 7 is a front view when the movable magnet 8 is swung counterclockwise, and the left swing mark 3a appears in the swing mark hole 5a of the outer frame 5. FIG. 8 is a front view of the movable magnet 8 when it swings clockwise, and the swing mark 3b on the right side appears in the swing mark hole 5a of the outer frame 5. The movable magnet 8 swings with an amplitude Q.

〔Effect of the invention〕

Since the structure of the pendulum clock according to the present invention does not include a pendulum and a ball used in conventional pendulum clocks, the length of the pendulum clock as a whole can be shortened and the pendulum clock can be made smaller. Further, according to the present invention, since the main body of the watch is swung left and right, and the mechanical body of the watch is also swung, it is possible to provide a new timepiece that has not been seen before, and it is possible to improve the visual recognition effect.

[Brief explanation of the drawing]

1 to 8 are drawings showing an embodiment of the structure of a pendulum clock according to the present invention, and FIG. 1 is shown in the direction of arrow A-A in FIG.
2 is a front view when the watch mechanical body is stationary, FIG. 3 is a rear view of the watch, and FIG. 4 is a sectional view in the direction of arrow B-B in FIG. 1. , shows the structure of the shaft and bearing. Fig. 5 is a sectional view showing a second embodiment of the shaft and bearing, Fig. 6 is a sectional view showing a third embodiment of the shaft and bearing, and Fig. 7 is a sectional view showing the shaft and bearing in a third embodiment. FIG. 8 is a front view when the timepiece mechanical body is oscillated clockwise. 1... Watch mechanical body, 1a, 4a... Shaft, 2... Pointer, 3... Watch body, 3a
, 3b... Swing mark, 4... Front cover outer frame body, 5a... Swing mark hole, 6...
...Transparent cover, 6a, 7a...Bearing part, 7
・・・・・・Support plate. 8...Movable magnet, 9...Electromagnet. 5... Hereafter, Figure 1 Figure 2 A

Claims (1)

[Claims] A watch body equipped with a watch mechanical body, a movable magnet disposed at the bottom of the watch body, and a movable magnet that is periodically attracted;
A structure of a pendulum timepiece comprising an electromagnet for repulsion, and an outer frame body and a support plate that are equipped with the electromagnet and pivotally support the timepiece body and the timepiece mechanical body in a swingable manner.