JPS5510532A - Antimagnetic structure for crystal watch - Google Patents
Antimagnetic structure for crystal watchInfo
- Publication number
- JPS5510532A JPS5510532A JP8340678A JP8340678A JPS5510532A JP S5510532 A JPS5510532 A JP S5510532A JP 8340678 A JP8340678 A JP 8340678A JP 8340678 A JP8340678 A JP 8340678A JP S5510532 A JPS5510532 A JP S5510532A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- antimagnetic
- coil core
- magnetic flux
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/008—Mounting, assembling of components
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To simplify the structure as well as to decrease the necessary space by using the material featuring a lower permeability than the coil core material for the antimagnetic material which encloses partially the coil core or by lowering the magnetic resistance of the antimagnetic plate less than that of the coil core. CONSTITUTION:Antimagnetic plate 8 provided only on the side surface of coil 4 is made of the material featuring a higher magnetic permeability than coil core 3. For example, the ordinary coil core uses the 45%-Ni permalloy, and thus the 78%-Ni permalloy is used for plate 8. Thus the magnetic flux first flows into plate 8 and passes through it when the magnetic flux caused by the external magnetic field is applied as shown by arrows. And then the magnetic flux flows into core 3 after plate 8 is saturated magnetically. As a result, the antimagnetic performance can be increased for the converter and against the external magnetic field by the amount equivalent to that of the period during which the magnetic flux flows into plate 8 to give it saturation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8340678A JPS5510532A (en) | 1978-07-08 | 1978-07-08 | Antimagnetic structure for crystal watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8340678A JPS5510532A (en) | 1978-07-08 | 1978-07-08 | Antimagnetic structure for crystal watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5510532A true JPS5510532A (en) | 1980-01-25 |
Family
ID=13801538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8340678A Pending JPS5510532A (en) | 1978-07-08 | 1978-07-08 | Antimagnetic structure for crystal watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5510532A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0101410A2 (en) * | 1982-08-16 | 1984-02-22 | Eta SA Fabriques d'Ebauches | Electro-mechanical clock equipped with a magnetic shield |
| JP2017058381A (en) * | 2016-12-27 | 2017-03-23 | シチズン時計株式会社 | Electronic clock |
| WO2019049587A1 (en) * | 2017-09-08 | 2019-03-14 | シチズン時計株式会社 | Movement of electronic timepiece and electronic timepiece |
-
1978
- 1978-07-08 JP JP8340678A patent/JPS5510532A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0101410A2 (en) * | 1982-08-16 | 1984-02-22 | Eta SA Fabriques d'Ebauches | Electro-mechanical clock equipped with a magnetic shield |
| EP0101410A3 (en) * | 1982-08-16 | 1984-03-28 | Eta SA Fabriques d'Ebauches | Electro-mechanical clock equipped with a magnetic shield |
| JP2017058381A (en) * | 2016-12-27 | 2017-03-23 | シチズン時計株式会社 | Electronic clock |
| WO2019049587A1 (en) * | 2017-09-08 | 2019-03-14 | シチズン時計株式会社 | Movement of electronic timepiece and electronic timepiece |
| JP2019049436A (en) * | 2017-09-08 | 2019-03-28 | シチズン時計株式会社 | Movement of electronic timepiece and electronic timepiece |
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