JPS6355675B2 - - Google Patents
Info
- Publication number
- JPS6355675B2 JPS6355675B2 JP55158689A JP15868980A JPS6355675B2 JP S6355675 B2 JPS6355675 B2 JP S6355675B2 JP 55158689 A JP55158689 A JP 55158689A JP 15868980 A JP15868980 A JP 15868980A JP S6355675 B2 JPS6355675 B2 JP S6355675B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- magnet
- magnetic
- nickel
- film
- 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.)
- Expired
Links
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 9
- 229910001096 P alloy Inorganic materials 0.000 claims description 6
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Electromechanical Clocks (AREA)
- Gears, Cams (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
本発明は、表面に非磁性皮膜を形成した歯車を
有する電子腕時計に関するものである。
従来より、腕時計に用いられる歯車は第１図の
断面図に示す如く、歯車素地１の表面に耐食性向
上及び表面強度向上のため、その表面にニツケル
皮膜２を形成していた。あるいは第２図の断面図
に示す如く、外観向上及び潤滑性向上のためその
ニツケル皮膜の表面にさらに金皮膜３を形成して
いた。この第２図におけるニツケル皮膜は、歯車
１への金の拡散を防止するため下地として施され
るものであつた。
しかし、これらのニツケル皮膜は磁性体である
ため、第５図に示す如くロータ４と噛み合う歯車
５においては、歯車素地１に非磁性材料を用いた
場合でも、歯車５と、ロータ４に固定された磁石
６のすき間ｔが小さくなると、歯車５が磁石６の
磁力により磁石方向に引きつけられ、歯車の回転
抵抗が増大する事により歯車の正常な回転が妨げ
られて、時計の遅れ又は止りが生ずると言う欠点
を有していた。特に、磁石の表面磁束密度が200
〜350ガウスで、すき間ｔが0.2mm以下の場合に影
響が大きく、電子腕時計製造上の大きな障害とな
つていた。
本発明は、上記歯車５が磁石６に引きつけられ
ると言う欠点を除去し、歯車と磁石のすき間の大
小にかかわらず、電子腕時計の正常な動作を得る
事を目的としたものである。
本発明は、磁石を有するロータとそれに噛み合
う歯車とを有する電子腕時計において、該歯車表
面に一層又は多層の非磁性皮膜を形成する事によ
り、磁石の磁力によつて歯車が引きつけられる事
がなく、回転抵抗の増加を防止でき、上記問題点
を解決した。
以下実施例により説明する。
実施例 １
第３図は、本発明における歯車の断面図であ
り、１は非磁性体の歯車素地、７はリン含有率10
〜15％の非磁性ニツケル−リン合金皮膜である。
また第６図は本発明における各部品の関係図であ
り、４はロータ、６は表面磁束密度200〜350ガウ
スの磁石、８は非磁性皮膜を形成した歯車であ
る。ｔは歯車８と磁石６のすき間であり、すき間
ｔを変化させた時の本発明における電子腕時計の
動作、並びに第１図及び第５図に示した歯車５を
用いた、従来の電子腕時計の動作を表１に示す。
実施例 ２
第４図は、本発明における歯車の断面図であ
り、１は非磁性体の歯車素地、７はリン含有率10
〜15％の非磁性ニツケル−リン合金皮膜、３は非
磁性体である金皮膜である。この歯車を第６図の
関係図における歯車８として用い、その他は実施
例１と同様にして本発明における電子腕時計の動
作、及び従来の電子腕時計の動作を調べた結果、
表１と全く同一の結果であつた。
The present invention relates to an electronic wristwatch having a gear with a non-magnetic coating formed on its surface. Conventionally, gears used in wristwatches have had a nickel coating 2 formed on the surface of a gear base 1 to improve corrosion resistance and surface strength, as shown in the cross-sectional view of FIG. Alternatively, as shown in the sectional view of FIG. 2, a gold film 3 was further formed on the surface of the nickel film to improve appearance and lubricity. The nickel film shown in FIG. 2 was applied as a base to prevent gold from diffusing into the gear 1. However, since these nickel coatings are magnetic, as shown in FIG. When the gap t between the magnets 6 becomes smaller, the gear 5 is attracted toward the magnet by the magnetic force of the magnet 6, and the rotational resistance of the gear increases, which prevents the gear from rotating normally, causing the clock to run late or stop. It had a drawback. In particular, the surface magnetic flux density of the magnet is 200
~350 Gauss, and the effect is large when the gap t is 0.2 mm or less, which has been a major obstacle in the production of electronic wristwatches. The present invention aims to eliminate the drawback that the gear 5 is attracted to the magnet 6, and to ensure normal operation of the electronic wristwatch regardless of the size of the gap between the gear and the magnet. The present invention provides an electronic wristwatch that has a rotor with a magnet and a gear that meshes with the rotor.By forming a single layer or multilayer non-magnetic coating on the surface of the gear, the gear is prevented from being attracted by the magnetic force of the magnet. The increase in rotational resistance can be prevented and the above problems have been solved. This will be explained below using examples. Example 1 FIG. 3 is a cross-sectional view of a gear according to the present invention, where 1 is a non-magnetic gear base, 7 is a gear base with a phosphorus content of 10
~15% non-magnetic nickel-phosphorus alloy coating.
FIG. 6 is a diagram showing the relationship between parts in the present invention, where 4 is a rotor, 6 is a magnet with a surface magnetic flux density of 200 to 350 Gauss, and 8 is a gear on which a non-magnetic film is formed. t is the gap between the gear 8 and the magnet 6, and the operation of the electronic wristwatch according to the present invention when the gap t is changed, as well as the operation of the conventional electronic wristwatch using the gear 5 shown in FIGS. 1 and 5. The operation is shown in Table 1. Example 2 FIG. 4 is a cross-sectional view of a gear according to the present invention, where 1 is a gear base made of a non-magnetic material, and 7 is a phosphorus content of 10.
~15% non-magnetic nickel-phosphorus alloy film, 3 is a non-magnetic gold film. This gear was used as gear 8 in the relational diagram of FIG. 6, and other aspects were the same as in Example 1. As a result of investigating the operation of the electronic wristwatch according to the present invention and the operation of the conventional electronic wristwatch,
The results were exactly the same as in Table 1.
【表】
また、リン含有率10〜15％のニツケル合金は、
アモルフアス又はアモルフアス状の組織となつて
いるため、この皮膜は上記効果のみならず、耐食
性及び耐摩耗性においても優れた効果が得られ
た。
なお上記実施例では、非磁性皮膜として非磁性
ニツケル−リン合金皮膜一層の場合、及び非磁性
ニツケル−リン合金皮膜と金皮膜の二層の場合に
ついて述べたが、この他にスズ皮膜、銅皮膜、パ
ラジウム皮膜、パラジウム合金皮膜、ロジウム皮
膜等の非磁性皮膜の、一層又は多層皮膜の場合で
も同様な結果が得られる事は言うまでもない。
以上述べたように、本発明によれば、磁石を有
するロータと噛み合う歯車表面に、一層又は多層
の非磁性皮膜を形成する事により、磁石の磁力に
より該歯車が磁石方向に引きつけられる事がなく
なり、歯車と磁石のすき間の大小にかかわらず、
電子腕時計の正常な動作が得られるという効果が
あり、又、一層又は多層の非磁性皮膜は、リン含
有率10〜15％を含むニツケル合金のアモルフアス
又は、アモルフアス状の組織を形成しているの
で、耐食性・耐摩耗性に勝れ、いつまでも正常な
動作を保持できるという効果をもつている。[Table] In addition, nickel alloys with a phosphorus content of 10 to 15% are
Since it has an amorphous or amorphous-like structure, this film not only has the above effects but also has excellent corrosion resistance and abrasion resistance. In the above embodiments, a single layer of nonmagnetic nickel-phosphorus alloy film and a double layer of nonmagnetic nickel-phosphorus alloy film and gold film were described as the nonmagnetic film, but tin film and copper film may also be used. Needless to say, similar results can be obtained with single-layer or multilayer non-magnetic coatings such as palladium coatings, palladium alloy coatings, rhodium coatings, etc. As described above, according to the present invention, by forming a single-layer or multi-layer non-magnetic coating on the surface of a gear that meshes with a rotor having magnets, the gear is prevented from being attracted in the direction of the magnet by the magnetic force of the magnet. , regardless of the size of the gap between the gear and the magnet.
It has the effect of ensuring normal operation of the electronic wristwatch, and the single-layer or multi-layer non-magnetic coating forms an amorphous or amorphous-like structure of a nickel alloy containing 10 to 15% phosphorus. It has excellent corrosion resistance and wear resistance, and has the effect of maintaining normal operation for a long time.
第１図及び第２図は従来の歯車の断面図、第３
図及第４図は本発明における歯車の断面図、第５
図は従来の電子腕時計における各部品の関係図、
第６図は本発明の電子腕時計における各部品の関
係図である。
１……歯車素地、２……ニツケル皮膜、３……
金皮膜、４……ロータ、５……従来の歯車、６…
…磁石、７……非磁性ニツケル−リン合金皮膜、
８……本発明における歯車。
Figures 1 and 2 are cross-sectional views of conventional gears;
Figure 4 is a sectional view of the gear in the present invention, and Figure 5 is a sectional view of the gear in the present invention.
The figure is a diagram of the relationship between each part in a conventional electronic wristwatch.
FIG. 6 is a relationship diagram of each component in the electronic wristwatch of the present invention. 1... Gear base, 2... Nickel film, 3...
Gold coating, 4... Rotor, 5... Conventional gear, 6...
...Magnet, 7...Nonmagnetic nickel-phosphorus alloy film,
8...Gear in the present invention.
Claims (1)
を有する電子腕時計において、該歯車表面に、少
なくとも一層は、リン含有率10〜15％のニツケル
−リン合金皮膜である一層又は多層の非磁性皮膜
を形成した事を特徴とする電子腕時計。1. An electronic wristwatch that has a rotor with a magnet and a gear meshing with the rotor, in which at least one non-magnetic coating, which is a nickel-phosphorus alloy coating with a phosphorus content of 10 to 15%, is formed on the surface of the gear. An electronic wristwatch featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55158689A JPS5782786A (en) | 1980-11-11 | 1980-11-11 | Electronic wrist watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55158689A JPS5782786A (en) | 1980-11-11 | 1980-11-11 | Electronic wrist watch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5782786A JPS5782786A (en) | 1982-05-24 |
| JPS6355675B2 true JPS6355675B2 (en) | 1988-11-04 |
Family
ID=15677195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55158689A Granted JPS5782786A (en) | 1980-11-11 | 1980-11-11 | Electronic wrist watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5782786A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04137972A (en) * | 1990-09-28 | 1992-05-12 | Canon Inc | Facsimile equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1237058A1 (en) * | 2001-02-28 | 2002-09-04 | Eta SA Fabriques d'Ebauches | Usage of a non-magnetic coating for covering parts in a horological movement |
| EP3208664B1 (en) * | 2016-02-19 | 2023-08-16 | Omega SA | Timepiece mechanism or clock without magnetic signature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5010263U (en) * | 1973-05-24 | 1975-02-01 |
-
1980
- 1980-11-11 JP JP55158689A patent/JPS5782786A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04137972A (en) * | 1990-09-28 | 1992-05-12 | Canon Inc | Facsimile equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5782786A (en) | 1982-05-24 |
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