JPS57116567A - Small-sized motor with battery lifetime predicting function - Google Patents
Small-sized motor with battery lifetime predicting functionInfo
- Publication number
- JPS57116567A JPS57116567A JP293981A JP293981A JPS57116567A JP S57116567 A JPS57116567 A JP S57116567A JP 293981 A JP293981 A JP 293981A JP 293981 A JP293981 A JP 293981A JP S57116567 A JPS57116567 A JP S57116567A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- battery
- lifetime
- main
- path
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To normally perform the display of an operation by a second flash simultaneously in addition to the prenotice of the lifetime of a battery without adding anything to an electric circuit in an analog type watch. CONSTITUTION:Poles 6a, 6b of a stator for a main rotor 12 which drives a wheel train 15 of a watch are formed on a main magnetic flux path 18. Poles 7a, 7b of a stator for a subrotor 13 which drives a gear 16 with a battery lifetime display are formed on a submagnetic flux path 19 displaced from the main path 18, and the minimum starting voltage of the rotor 13 is increased larger than that of the main rotor 12. While the voltage of the battery is sufficient, magnetic flux capable of driving the rotor 13 passes through the path 19, but when the voltage of the battery is lowered to the vicinity of its lifetime, the rotor 13 no longer operates. As a result, the gear 16 which is driven by the rotor B so that its operation can be seen from a window hole 17 stops rotating, and the end of the lifetime of the battery can be notified.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP293981A JPS57116567A (en) | 1981-01-12 | 1981-01-12 | Small-sized motor with battery lifetime predicting function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP293981A JPS57116567A (en) | 1981-01-12 | 1981-01-12 | Small-sized motor with battery lifetime predicting function |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57116567A true JPS57116567A (en) | 1982-07-20 |
JPH0128352B2 JPH0128352B2 (en) | 1989-06-02 |
Family
ID=11543321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP293981A Granted JPS57116567A (en) | 1981-01-12 | 1981-01-12 | Small-sized motor with battery lifetime predicting function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57116567A (en) |
-
1981
- 1981-01-12 JP JP293981A patent/JPS57116567A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0128352B2 (en) | 1989-06-02 |
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