JPS628546Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ticking sound generating device for a pendulum that is electromagnetically driven as a speed governor or decoration in a timepiece.

In recent years, as is well known, pendulums are often driven electromagnetically, but this type of pendulum does not produce a ticking sound unlike the older ankle-escape type pendulum. In addition, clocks with pendulums often have classic designs,
In such a case, if the ticking sound was not generated, the user would feel strange. Therefore, Utility Model Application No. 55-145383 has been proposed to generate a ticking sound in such an electromagnetically driven pendulum. However, this method had the disadvantage that the escape sound (collision sound) on the left and right sides had exactly the same sound quality, which was slightly different from the rhythmically high and low ticking sound of the actual ankle-escape type.

The present invention improves the drawbacks of the above-mentioned prior art, and examples thereof will be described below with reference to the drawings.

In FIGS. 1 and 2, a pendulum 5 consisting of a pendulum 2, a bead 3, and a bead 4 is swingably supported at its upper end on the back side of a well-known timepiece mechanical body 1 . The swinging zao 2 has a hooking part 6 integrally formed at its lower end for hooking the ball zao 3, and above the hanging part 6, vertically bent parts 7 and 8 are bent at right angles and parallel to each other. There is. Permanent magnets 9 and 10 are fixed to the vertically bent portions 7 and 8, respectively, facing each other.

Further, a holding part 11 is integrally provided vertically at the lower part of the timepiece mechanical body 1 , and a circuit unit holder 12 is held by this holding part. In the holder 12,
A printed circuit board 14 on which circuit components 13 are mounted is fixed, and a drive coil 15 is fixed to the front end surface of this printed circuit board 14 in the same plane. The drive coil 15 is located between the permanent magnets 9 and 10, and as is well known, the pendulum 5 swings back and forth at a constant period due to the magnetic action between the drive coil 15 and the permanent magnets 9 and 10. ing.

Furthermore, a box body 16 having an open upper surface is attached to the swinging saw 2. The box body 16 can also be provided so as to see-saw in conjunction with the movement of the pendulum 5 (swinging rod 2) at a fixed position. Inside the box body 16 is a rotating body 1 as an example of a movable member.
7 (in this example, a sphere) is accommodated so as to be able to roll laterally. As shown in an enlarged view in FIG. 3, this box 16 has different left and right side surfaces. That is, while the left side surface is a smooth surface 16a, the right side surface is a rough surface 16b with minute irregularities.

When the box body 16 swings back and forth together with the pendulum 5 ,
The bottom surface of the box body 16 is tilted alternately, and the rotary body 17 contained therein rolls from side to side on the bottom surface of the box body 16 in synchronization with the movement, and the rotary body 17
A collision sound is generated each time the left and right smooth surfaces 16a and rough surfaces 16b of 6 are alternately hit. The sound quality of the impact sound is different when the rotating body 17 hits the smooth surface 16a and when it hits the rough surface 16b, and a sound close to the escape sound (tick-tock sound) of a real ankle-escape type is obtained. Note that the rotating body 17 can also be made into a cylindrical body, and by making the left and right sides of the box body 16 different materials, that is, by making the collision coefficients different, different collision sounds can be produced. It can also be easily implemented.

Next, an example in which the movable member is changed will be explained with reference to FIG. 4.

Components that are the same as those in the previous embodiment are given the same reference numerals, and their description will be omitted. A movable lever 18, which is another example of a movable member, has one end supported rotatably around a shaft 19 on the back of the watch mechanical body 1 , and the shaft 19 is aligned on a vertical line passing through the swinging fulcrum of the pendulum 5 . be. This movable member 18 has two
The collision pins 20 and 21 of the book protrude at right angles, and these two
The swinging rod 2 is inserted between the collision pins 20 and 21 of the book with a certain margin. Collision pin 20,2
1 are designed in different diameters.

When the pendulum 5 swings back and forth, the movable lever 18 also rotates around the shaft 19 in conjunction with it. That is, when the pendulum 5 swings to the left from the state shown by the solid line in FIG. 4, the left side of the pendulum 2 pushes the pin 20 to the left. At this time, as soon as the center of gravity of the movable lever 18 is displaced to the left side of the shaft 19, which is the center of rotation, the movable lever 18 rotates counterclockwise at once due to its gravity, and the pin 21 swings and touches the right side of the shaft 2. They collide and make a sound. The pendulum 5 (swing ball 4) then swings to the left maximum amplitude position shown by the chain line,
Then it begins to swing to the right. At this time, the pin 21 is in contact with the right side of the furizao 2, and this pin 2
1 is being pushed to the right. As soon as the center of gravity of the movable lever 18 is displaced to the right side of the shaft 19,
The movable lever 18 rotates clockwise at once due to its gravity, and the pin 20 collides with the left side surface of the swinging rod 2, producing a sound. This movement is interlocked and synchronized with the movement of the pendulum 5 , and a collision sound is periodically generated. pin 20,
21 have different diameters, so when they alternately collide with the sides of Furizao 2, a strange collision sound is produced. This produces a tick-tock sound that is very similar to the escapement sound of a real ankle-gun. In this embodiment, the collision pins 20, 2
A different escapement sound can be obtained by varying the distance from the axis 19 of the swing rod 1, or by attaching collision plates made of different materials to both sides of the swing rod 2.

In the second embodiment, the movable lever 18 may be rotatably supported on the swinging rod 2.

As described above, according to the electromagnetically driven pendulum ticking sound generating device according to the present invention, it is easy to generate a different ticking sound when the pendulum moves left and right, and it is similar to the real ankle-escaping sound. It provides a similar light tone and does not give the user any strange sensations.
Furthermore, it is easy to assemble and can be constructed at low cost.

[Brief explanation of the drawing]

Fig. 1 is a rear view of one embodiment of the present invention, Fig. 2 is a right side view thereof, Fig. 3 is an enlarged sectional view of the box, and Fig. 4 is a rear view of an embodiment of the present invention.
The figure is a rear view of another embodiment. 1 ...Clock machine body, 2...Furizao, 3...Jade dao, 4...Furidama, 5 ...Pendulum, 9,10...
...Permanent magnet, 15... Drive coil, 16... Box body, 17... Rotating body (movable member), 18... Movable lever (movable member) 20, 21... Collision pin.

Claims (1)

[Claims for Utility Model Registration] A pendulum that is electromagnetically driven back and forth and a movable member that moves in opposite directions in conjunction with the pendulum collide with each other in synchronization with the movement of the pendulum to generate sound. A tick-tock sound generating device for an electromagnetically driven pendulum, wherein the device is configured to generate different collision sounds when the pendulum swings in one direction and when the pendulum swings in the other direction.