JPS5465580A - Electornic watch - Google Patents
Electornic watchInfo
- Publication number
- JPS5465580A JPS5465580A JP13192677A JP13192677A JPS5465580A JP S5465580 A JPS5465580 A JP S5465580A JP 13192677 A JP13192677 A JP 13192677A JP 13192677 A JP13192677 A JP 13192677A JP S5465580 A JPS5465580 A JP S5465580A
- Authority
- JP
- Japan
- Prior art keywords
- wristwatch
- space
- substrate
- holes
- contained
- 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
- 239000000758 substrate Substances 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
- G04F5/063—Constructional details
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To obtain a wristwatch which is highly accurate, samll in size, thin and inexpensive by packaging a signal source which cause less variations of frequency with respect to temperature changes together with other electronic parts to the substrate of the wristwatch. CONSTITUTION:Substrate 50 of the wristwatch consists of three sheets of L type ceramic sheets. The rectangular holes 54, 55 of the bottom sheet 51 and middle sheet 52 and the rectangular holes 56, 57 of the upper sheet 53 form plural spaces 59, 60 and screw holes 58A... for fixing to the plate. Tuning fork type crystal vibrators 20, 20' of different zero temperature coefficient temperatures are contatined in the base 59A of the space 59 and the electrode terminals 23 are jointed together and electrically connected by means of bonding, etc. Electronic parts such as IC 71, etc. are contained in the space 60 and the respective spaces are sealed by covers 72, 73. Thereafter, the two tuning fork type crystal vibrators contained in the space 59 are adjusted to a required frequcney. The circuit substrate having been perfected in this way is fixed to the plate, etc. of the wristwatch through the fixing holes 58.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13192677A JPS5465580A (en) | 1977-11-02 | 1977-11-02 | Electornic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13192677A JPS5465580A (en) | 1977-11-02 | 1977-11-02 | Electornic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5465580A true JPS5465580A (en) | 1979-05-26 |
Family
ID=15069423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13192677A Pending JPS5465580A (en) | 1977-11-02 | 1977-11-02 | Electornic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5465580A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014116791A (en) * | 2012-12-10 | 2014-06-26 | Nippon Dempa Kogyo Co Ltd | Oscillation device |
-
1977
- 1977-11-02 JP JP13192677A patent/JPS5465580A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014116791A (en) * | 2012-12-10 | 2014-06-26 | Nippon Dempa Kogyo Co Ltd | Oscillation device |
| TWI578692B (en) * | 2012-12-10 | 2017-04-11 | 日本電波工業股份有限公司 | Oscillation apparatus |
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