JPS5935831Y2 - clock feeder - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of a permanent magnet 1, a fixed iron piece 2 and a movable iron piece 3 that form the magnetic path of the permanent magnet 1, and a coil 4 that is magnetized with a polarity that destroys the magnetic path of the permanent magnet 1. This invention relates to a clock feeding device in which a single-phase drive device is formed, and the gear train of the clock is driven by the movement of the movable iron piece 3 of this single-phase drive device, and its purpose is However, in order to intermittently advance the gear train of a clock in synchronization with a pulse signal that is the time standard obtained by frequency-dividing the oscillation signal of a crystal oscillator, etc., it is possible to reduce the number of parts and make it simple and compact. We are able to provide clock feeders.

The present invention will be explained in detail below using examples.

A permanent magnet 1 is mounted on one end of the fixed iron piece 2, and the base end of the movable iron piece 3 is pivoted to an acute angle end 5a at the upper end of a rising piece 5 erected on the other end of the fixed iron piece 2. The tip of the movable iron piece 3 and the permanent magnet end iron piece 6 on the permanent magnet 1 are opposed to each other with a predetermined gap therebetween.

A coil 4 is wound around the outer periphery of the movable iron piece 3, and the coil 4 can be excited at a constant cycle using a pulse signal obtained by frequency-dividing the oscillation signal of a crystal oscillator or the like.

The base end of a ratchet rod 7 is rotatably attached to the movable iron piece 3, and the feed pawl 8 at the tip of the ratchet rod 1 is engaged with the FB 10 K of the ratchet wheel 9. A prevention claw 11 is attached.

The ratchet wheel 9 and the second hand gear 12 are interlocked with each other at a constant reduction ratio, and the second hand pinion 26 provided on the second hand shaft 13 of the second hand gear 12 is meshed with the transmission gear 14. Legendary kana 27 minute hand gear 1
6 is linked.

The minute hand pinion 18 provided on the minute hand shaft 17 of the minute hand gear 16 and the date rear gear 19 are engaged with each other, and the date pinion 21 and the hour hand gear 22 provided on the date rear shaft 20 of the date rear gear 19 are engaged with each other. The mesh is tight.

Furthermore, 23 is a second hand, 24 is a minute hand, and 25 is an hour hand.

Next, the operation of the present invention will be explained.

When an oscillation signal from a crystal oscillator or the like is frequency-divided and a pulsed voltage as shown in FIG. 5 is applied to the coil 4, the movable iron piece 3 rotates up and down in response.

FIG. 3 shows a state in which the movable iron piece 3 is excited, and the tip of the movable iron piece 3 is excited to the north pole.

In this case, the flux coming out of the permanent magnet 1 draws a loop of the N pole of the permanent magnet 1 → the iron piece 6 at the end of the permanent magnet → the space → the 8 poles of the permanent magnet 1.

Also, since the iron piece 6 at the end of the permanent magnet is excited to the north pole,
When the tip of the movable iron piece 3 is excited to the north pole, they repel each other, and at the same time, the fixed iron piece 2 is excited to the south pole, so the north pole of the movable iron piece 3 and the south pole of the fixed iron piece 2 attract each other. The movable iron piece 3 moves to the position shown by the imaginary line in FIG.

In this case, the feed pawl 8 disengages the teeth 10 of the ratchet wheel 9.

Thereafter, when the current is cut off, the movable iron piece 3 is demagnetized and returns to the position shown in FIG.

At this time, the feed pawl 8 of the ratchet rod 7 feeds the ratchet wheel 9 by teeth 111 pitches.

In this way, the ratchet wheel 9 rotates intermittently, the second hand 23 rotates at a speed of 1 rpm, the minute hand 24 rotates at a speed of -rpm, and the hour hand 25 rotates at a speed of 10 rpm.

As described above, the present invention forms a single-phase drive device using a permanent magnet, a fixed iron piece and a movable iron piece that form the magnetic path of the permanent magnet, and a coil that is magnetized with a polarity that destroys the magnetic path of the permanent magnet. The gear train of the clock is driven by the movement of the movable iron piece of this single-phase drive device, and conventionally two-phase (reversed)
The pulse-driven converter is an output sofa with a chip size of 2.
However, since it is single-phase, the IC chip size can be reduced to 2/3 of the conventional one, reducing costs, and it is driven only by a fixed iron core, permanent magnet, and coil. Because the device is formed, it can be made simple and compact by reducing the number of parts, and since the gear train is moved using attraction between a permanent magnet and a movable iron piece, it can be used regardless of changes in battery voltage. Since the feeding force is constant and it is sufficient to apply current for the response speed time when the movable iron piece moves to the fixed iron piece, it is possible to reduce power consumption, and there is almost no overshoot as in the conventional method. Somehow, the crack in the second hand becomes much less.

[Brief explanation of the drawing]

Figure 1 is an overall view showing one embodiment of the present invention, Figures 2 and 3.
The figure is a cross-sectional view explaining the operation of the single-phase drive device same as the above.
The figure is a plan view of the same single-phase drive device as above, and FIG. 5 is an explanatory diagram showing the waveform of the drive voltage as above, in which 1 is a permanent magnet, 2 is a fixed iron piece, 3 is a movable iron piece, and 4 is a coil. .

Claims (1)

[Scope of utility model registration request] A single-phase drive device is formed by a permanent magnet, a fixed iron piece and a movable iron piece that form the magnetic path of the permanent magnet, and a coil that is magnetized with a polarity that destroys the magnetic path of the permanent magnet. A clock feeding device that drives a gear train of a clock by moving an iron piece.