JPS59183390A - Manufacture of watch case - Google Patents

Abstract

PURPOSE:To obtain a watch case excellent in bonding strength, showing no change with the elpse of time and easy in bonding work, by providing a projection to at least one among metal exterior parts constituting the watch case and the aforementioned exterior parts are mutually bonded by resistance welding. CONSTITUTION:Cylindrical projections 7a each having a diameter of about 0.6mm. and a height of about 0.1mm. are provided to a barrel 7 at four places thereof on the way of processing reaching a finished product by molding. The barrel 7 is brought into contact with the under surface of an upper barrel 8 and a current is passed through both of them under welding pressure of 23kg to perform resistance welding to weld the barrel 7 and the upper barrel 8. By this mechanism, bonding work becomes extremely easy, fixing strength reaches 80kg or more in the bonding strength in a vertical direction, sufficient strength is obtained as a watch case and there is no possibility of the change with the elapse of time.

Description

【発明の詳細な説明】 本発明は時計側の製造方法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a timepiece.

時計側は一般には、第１図、第２図、第３図開示す様に
、胴１に上胴２、側バイブロ、バイト接続足４、装飾用
かざり５、バンド先駆６等の外装部品が接続される構造
が取られる。As shown in FIGS. 1, 2, and 3, the watch generally includes exterior parts such as a body 1, an upper body 2, a side vibro, a bite connection foot 4, a decorative ornament 5, and a band tip 6. A connected structure is taken.

時計側を構成する前記外装部品を接合する方法としては
、従来有機接着剤を用いる方法、喰い付きを利用する方
法、ロウ付けする方法等が採用されている。有機接着剤
を用いる方法では接着作業に熟練度と加工時間を多く要
する欠点があるばかりで無く、経時変化による劣化を免
かれることが難しく満足できる接合方法とは言い難い。Conventional methods for joining the exterior parts that make up the watch side include a method using an organic adhesive, a method using bite, a method using brazing, and the like. Methods using organic adhesives not only have the disadvantage that the bonding work requires a high degree of skill and processing time, but also cannot be said to be a satisfactory bonding method because it is difficult to avoid deterioration due to changes over time.

喰い付きを利用する方法は、喰い付きのための部品相互
の寸法精度、形状管理が厳しく、部品製作上回難度が大
きい。又、合成樹脂より成る部品を介して喰い付ける方
法では、該部品を入れるスペースも必要であり、時計側
の細線化、薄型化に対してデザインが制約される欠点が
ある。The method of using biting requires strict dimensional accuracy and shape control between parts for biting, and is highly difficult to manufacture parts. In addition, the method of attaching the watch through parts made of synthetic resin requires a space to accommodate the parts, and has the disadvantage that the design is restricted when the watch side is made thinner and thinner.

他の方法としてのロウ付は方法は、ロウ材を使用し、高
温の炉に入れロウ付けする作業の繁雑さから、これがコ
スト高の要因となるばかりでなく、時計側が高温にさら
されることによる金属の再結晶、あるいはロウ付は炉中
雰囲気による酸化、さらにはロウ材の流れ出しで、仕上
面品質の劣化が起こることから時計側のデザインが制約
されたり、修正工程が避けられない欠点がある。Another method, brazing, uses brazing metal and is complicated to braze in a high-temperature furnace, which not only causes high costs, but also exposes the watch side to high temperatures. Recrystallization or brazing of metals causes oxidation due to the atmosphere in the furnace, and furthermore, the solder metal flows out, resulting in deterioration of the quality of the finished surface, which limits the design of the watch and has the disadvantage that correction processes are unavoidable. .

本発明の目的は胴に時計側を構成する外装部品を接合す
るに際し、′従来の欠点を解消することである。An object of the present invention is to eliminate the conventional drawbacks when joining exterior parts constituting the watch side to the case.

本発明は時計側を構成する金属製の外装部品のうち少ｌ
、【くとも一つに突起部を設け、抵抗溶接により、上記
部品を接合することを特徴とするものであり、該外装部
品は少なくとも一つが時効硬化合金であることによって
、さらに大きな効果が得らハ、ろ時計側の製造方法であ
る。The present invention focuses on a small portion of the metal exterior parts constituting the watch side.
[It is characterized by providing a protrusion on at least one of the parts and joining the above parts by resistance welding, and when at least one of the exterior parts is made of an age hardening alloy, an even greater effect can be obtained. This is the manufacturing method of the watch.

本発明てよる抵抗溶接は、接着剤、ロウ材等の介在物は
全く用いず作業は単純化されるため作業刊、良い。Resistance welding according to the present invention does not require any inclusions such as adhesives or brazing metals, and the work is simple, so it is very convenient.

さらに被接合物は、全体が高温にさらされろことなく、
突起部及びその極めて周辺のみ高温に加熱されろため、
従来例で述べたロウ伺は時の欠点は皆無である。Furthermore, the objects to be joined are not exposed to high temperatures as a whole.
Because only the protrusion and its surroundings are heated to a high temperature,
The rowing method described in the conventional example has no disadvantages at all.

さらて、時効硬化合金型の金属材料からなる時計外装部
品を用いれば、接合に対して特に有利となり面ｌ傷外力
優れた時計側を得ることができる。Furthermore, if a watch exterior part made of an age-hardening alloy type metal material is used, it is particularly advantageous for joining, and a watch side with excellent surface scratch resistance can be obtained.

すなわち、時効硬化し、た時計外装部品が軟化しない温
度でロウ伺けする方法を確立することには大きな困知を
要するが、本発明の抵抗溶接におし・ては、高温に加熱
される部分は極めて限ら」′■、て（゛るために、胴、
あるいは時計外装部品し１時効硬イヒの硬さを維持して
おり、軟化する部分Ｑま極めて限られた溶接点のみてあ
り、接合は容易である。In other words, it is difficult to establish a method for soldering at a temperature that does not soften age-hardened watch exterior parts, but in the resistance welding of the present invention, the parts are heated to high temperatures. The parts are extremely limited.
Also, as a watch exterior part, it maintains the hardness of 1-year hardness, and there are only very limited welding points including the softened part Q, making it easy to join.

近年、時計側は、優れた初期研摩品質の外観を長期にわ
たり維持するために、耐傷性の優、）また硬質材が多く
用いられてきてし・る。該硬質材を接合する方法で、テ
サインの拡大、機能の１広大力玉取られているが、本発
明の製造方法を採用することて゛硬さを低下することな
く接合が可能なブこめ、より有効な製造方法であること
が明ら力・て・ある。In recent years, in order to maintain the appearance of excellent initial polishing quality over a long period of time, hard materials with excellent scratch resistance have been increasingly used for watches. The method of joining these hard materials requires the expansion of the tesine and the functionality, but by adopting the manufacturing method of the present invention, it is possible to join without reducing the hardness. It is clear that this is an effective manufacturing method.

次に本発明を実施例に依って説明する。Next, the present invention will be explained based on examples.

〈実施例１〉 第４図［５ＵＳ３０４からなる胴７に時効硬イし型のＮ
１合金からなろ上胴８？グロジエクシヨン溶接した時計
側の断面図を示し、第５図に溶接前の胴７の断面図を示
す。〈Example 1〉 Figure 4
Upper body 8 from 1 alloy? A cross-sectional view of the watch side after glozi extension welding is shown, and FIG. 5 shows a cross-sectional view of the case 7 before welding.

胴７は通常の完成品までの加工途中にネｊし・て、プレ
ス成形にて直径Ｑ、、　６　ｍａｎ高さ０．１　ｙｒｖ
ｔｒθ）円筒形の突起部７ａが４箇所詮けられ、上胴８
の下面に当接させて、溶接加圧力２３ｋｇｆのもとでＱ
、　Ｑ　５　Ｓｅｃ、通電した抵抗溶接にて胴７と上胴
８を接合した。The body 7 is press-formed during normal processing into a finished product, with a diameter of Q, 6 man and a height of 0.1 yr.
trθ) The cylindrical protrusions 7a are cut out at four places, and the upper body 8
Q under a welding pressure of 23kgf
, Q 5 Sec, the shell 7 and the upper shell 8 were joined by resistance welding with electricity applied.

この時の溶接電流は２．６　Ｋ　Ａであった。The welding current at this time was 2.6 KA.

この方法の溶接による固定強度は、垂直方向の接合強度
で８０ｋｇｆ以」二を有し一１時計側として必要とさｈ
るて十分な強度を得ることができた。The fixing strength by welding in this method is 80 kgf or more in the vertical direction, which is necessary for the watch side.
We were able to obtain sufficient strength.

また溶接による熱影響範囲は狭く、時効処理硬さｌ−１
ｔ７００の上胴は全く変化なくもとの硬さを維持してい
た。In addition, the heat affected range due to welding is narrow, and the aging hardness l-1
The upper body of the t700 maintained its original hardness without any change.

さらに表面仕上が完成した外装部品の外観も何ら損傷な
く接合前の外観品質を維持していた。第４図において、
胴７と上胴８の溶接部断面で接合面より０．１０ｍａ離
れた上胴の内部Ｐ点ではＨＶ５８０に低下し、組織も変
化していたが、０．１３　ｒｕａ以」二離れた所ては、
組織変化も、硬さの低下もなく、時計側として何ら影響
するところはなかった。Furthermore, the appearance of the finished exterior parts remained the same as before joining without any damage. In Figure 4,
At point P inside the upper shell, which is 0.10 ma away from the joint surface in the cross section of the weld between shell 7 and upper shell 8, the HV decreased to 580, and the structure had changed, but at a point 0.13 rua or more away from the joint surface. teeth,
There was no change in structure or decrease in hardness, and there was no effect on the watch side.

〈実施例２〉 第６図は純Ｔｉからなる胴９に同じく純ＴｉＯ側バイグ
１０を抵抗溶接した時計側の断面図を示す。<Example 2> FIG. 6 shows a sectional view of the watch side in which a pure TiO side vig 10 is resistance welded to a body 9 made of pure Ti.

胴９には抵抗溶接するための受取９ａが設けられており
、側パイプ１０の外径で相互位置合せできる様になって
いる。一方側パイブ１０には第７図に示す様に側パイプ
端面が旋削加工てよ１つ、リング状の突遡部１ｏａが設
けられている。The shell 9 is provided with a receiver 9a for resistance welding, and the outer diameters of the side pipes 10 can be aligned with each other. As shown in FIG. 7, the one side pipe 10 is provided with a ring-shaped protruding portion 1oa, which has an end surface machined by turning.

溶接電流１．６　Ｋ　Ａ、通電時間Ｑ、　Ｑ　４５ｅＣ
１加圧力１５ｋｇｆで、突起部１０ａを介して抵抗溶接
したところ、側パイプ端面全周に渡り、均一な溶接がで
き防水シールが保だねた。固定強度も引張力で４５に９
ｆ以上あり側パイプの固定強度として十分であった。Welding current 1.6 KA, energizing time Q, Q 45eC
When resistance welding was performed through the protrusion 10a with a pressure of 15 kgf, uniform welding was achieved over the entire circumference of the end face of the side pipe, and a waterproof seal was maintained. The fixing strength is also 45 to 9 with tensile force.
It was sufficient as the fixing strength of the dovetail side pipe.

実施例２に示す胴と側パイプの接合を従来の圧入、接着
剤併用方法で実施すると、下記の様な問題点がある。す
なわち圧入のための胴六寸法、及び側パイプの外径寸法
の厳しい管理が必要なことと、接着剤接合の作業に熟練
を要するばかりでなく、有機接着剤に経時劣化が生ずる
ため高圧防水信頼性を長期てわたり保証することはでき
ず不利な点が多い。If the shell and side pipes are joined using the conventional method of press-fitting and using an adhesive as shown in Example 2, the following problems arise. In other words, it is necessary to strictly control the body dimensions for press-fitting and the outer diameter dimensions of the side pipes, and not only does adhesive bonding require skill, but the organic adhesive deteriorates over time, making it difficult to rely on high-pressure waterproofing. There are many disadvantages as it cannot guarantee long-term sex.

上記、実施例の他゛てバンドを取り伺けるためのバンド
接続足、バンドの先駆、各種飾り部品等も同様匠突起部
を介した抵抗溶接を行なうことにより、容易に結合でき
、しかも信頼性の高い結合を長期にわたり維持すること
ができる。In addition to the above-mentioned embodiments, the band connecting legs for accessing the band, the front of the band, various decorative parts, etc. can be easily connected by resistance welding through the protrusions, and are reliable. can maintain high binding over a long period of time.

また、時計バンド、バンド中留、等の部品にも本発明に
よる結合方法を採用することによって、新規ｆＩ［デザ
イン、安価な時計バンドが作れることは言うまでもない
。Furthermore, by applying the joining method according to the present invention to parts such as watch bands, band clasps, etc., it goes without saying that new designs and inexpensive watch bands can be made.

以上の様に、本発明による結合方法は従来用いられて来
た有機接着剤接合に比較して、接合強度に優わ、経時変
化の恐れもなく、接合作業も容易である。As described above, the bonding method according to the present invention has superior bonding strength compared to conventionally used organic adhesive bonding, has no fear of deterioration over time, and is easy to bond.

又、溶接時に胴及び付属の外装部品て与えられろ熱量は
極めて少なく、その影響は小範囲なため、部品を完成品
表面状態にて残金すれば、デザインの自由度が増大する
事、及び結合後の修正追加工を、まったく必要としない
事は極めて有利である。In addition, the amount of heat given to the shell and attached exterior parts during welding is extremely small, and its influence is small, so if the parts are left in the finished product surface state, the degree of freedom in design will increase, and the connection will be easier. It is extremely advantageous that there is no need for subsequent corrections or additional work.

さらに、熱影響で組織が変化し、材料特性が低下する金
属材料の外装部品の接合に大きな効果を見い出すことが
できろ。Furthermore, it could be found to have a great effect on joining exterior parts made of metal materials, whose structures change and material properties deteriorate under the influence of heat.

を高信頼性のもとに容易に接合することを可能にするも
のであり、テザイン上及び加工コスト上の効果は大きい
。This makes it possible to easily join the materials with high reliability, and has a large effect on the design and processing costs.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図、第３図はそれぞれ従来の時計側の構成
を示す部分断面図、第４図は不発叩圧よる実施例１０部
分断面図、第５図は第４図の溶接前の胴を示す部分断面
図、第６図は本発明による実施例２０部分断面図、第７
図は第６図の溶接前の側パイプを示す断面図である。 １．７．９・・・・胴、　２．８・・上胴、６．１０　
　側パイプ、　　４・・・・・バント接続足、５・・・
・飾り、　　６・・・・・バンド先駆、７ａ、ＩＱａ・
・・突起部、 ９ａ・・・・側パイプ溶接受段、 Ｐ・・・・硬度測定箇所。Figures 1, 2, and 3 are partial cross-sectional views showing the configuration of the conventional watch side, Figure 4 is a partial cross-sectional view of Example 10 with unexploded hammering, and Figure 5 is before welding as shown in Figure 4. FIG. 6 is a partial sectional view showing the body of the embodiment 20 according to the present invention, and FIG.
This figure is a sectional view showing the side pipe of FIG. 6 before welding. 1.7.9... Torso, 2.8... Upper Torso, 6.10
Side pipe, 4... Bunt connection leg, 5...
・Decoration, 6...Band Sakigen, 7a, IQa・
...Protrusion, 9a...Side pipe welding step, P...Hardness measurement point.

Claims (2)

【特許請求の範囲】[Claims] （１）時計側を構成する金属製の外装部品のうち少なく
とも−って突起部を設け、抵抗溶接により上記外装部品
を相互に接合してなることを特徴とする時計側の製造方
法。(1) A method for manufacturing a timepiece, characterized in that at least one of the metal exterior parts constituting the timepiece is provided with a protrusion, and the exterior parts are joined together by resistance welding. （２）特訓側を構成する金属製の外装部品の少なくとも
一つが時効硬化合金であることを特徴とする特許請求の
範囲第１項記載の時計側の製造方法。(2) The method for manufacturing a watch side according to claim 1, wherein at least one of the metal exterior parts constituting the training side is made of an age-hardened alloy.