JPS583110Y2 - Suishiodokei - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a crystal watch.

In a quartz clock in which a motor self-starting by a rotor placed between stator magnetic poles is used as a heavy machinery conversion device and a crystal oscillator is used as a reference signal source, the magnetic sealed container of the crystal oscillator is placed in a position where it interacts magnetically with the rotor. If this happens, the rotor's stopping position may shift, which may impair the rotor's accurate self-starting ability.

“Therefore, the present invention reduces the magnetic influence between the magnetic material and the rotor, allows the rotor to stop at a predetermined position, and achieves the accurate self-starting performance of the rotor at the initial design stage. This is what I did.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a circuit board, and on this circuit board, an ice crystal oscillator 14 and a semiconductor chip 15, which is a component of its oscillation circuit, are sealed with a sealing container 2 formed of a magnetic metal material. A stopped crystal oscillator 16 is provided.

3 and 4 are stator plates, whose magnetic poles 3 a and 4 a
A rotor 5 is arranged between them.

The magnetic poles 3 a and 4 a are eccentrically positioned symmetrically with respect to the rotor 5, so that the rotor 5 is self-starting.

13 is a plastic base plate that also serves as a capsule, and a partition wall 13a separates a watch mechanical body chamber 13b and a battery chamber 13C.
It is divided into

The rotor 5 and the crystal oscillator 16 are provided at substantially diagonal corners of the timepiece mechanical body chamber 13b.

This reduces the magnetic influence between the magnetic sealed container 2 and the rotor 5 and prevents the rotor 5 from shifting its stopping position, thereby stably achieving accurate self-starting of the rotor 5 in one direction. That's how it is.

Other timepiece wheel trains (not shown) that make up the timepiece mechanism.

) is made of plastic or non-magnetic metal so that there is no magnetic influence on the rotor 5.

The stator plates 3 and 4 are fixed to the stator coupling plate 6 by spot welding at a plurality of locations.

Furthermore, yoke holding parts 7 a and 7 b of the yoke 7 are fixed onto the stator plates 3 and 4 by spot welding.

A bobbin 9 on which a coil 8 is wound is fixedly attached to the yoke 7.

The bobbin 9 is made of synthetic resin such as ABS resin,
As shown in FIGS. 2 and 3, the right side plate 9b of the side plates 9a and 9b is provided with a collar 10 that protrudes toward the sealed container 2.

The flange 10 serves as a means to prevent the sealed container 2 from falling over.
The tip extends beyond the yoke holding portion 7b and the stator plate 4 and is close to the outer surface of the sealed container.

Therefore, even if the sealed container 2 falls down due to an impact force applied to the watch, it will be stopped by the flange 10 and will not come into direct contact with the yoke 7 or the stator plate 4.

Note that 11 and 12 respectively indicate an electrode plate and a battery provided in the battery compartment 13C.

As explained above, according to the present invention, there is little pneumatic influence between the magnetically sealed container and the rotor, so the rotor's stopping position does not shift, and the rotor can accurately self-start in one direction.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view, Fig. 2 is a large sectional view taken along the line II-II in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line III-III in Fig. 1. Expanded cross-sectional view. 2... Magnetic sealed container, 3 a, 4 a...
... Stator magnetic pole, 5 ... Rotor, 13b.
...Clock machine body room, 16...Crystal oscillator.

Claims (1)

[Scope of utility model registration request] It is equipped with a self-starting motor with a magnetized rotor arranged between stator magnetic poles, and a crystal oscillator sealed in a sealed container made of magnetic material, and the rotor and crystal oscillator are located approximately diagonally across the clock machine body chamber. A crystal clock characterized by being located in the corner of the picture.