JPH06242260A - Cover glass for timepiece - Google Patents
Cover glass for timepieceInfo
- Publication number
- JPH06242260A JPH06242260A JP2426693A JP2426693A JPH06242260A JP H06242260 A JPH06242260 A JP H06242260A JP 2426693 A JP2426693 A JP 2426693A JP 2426693 A JP2426693 A JP 2426693A JP H06242260 A JPH06242260 A JP H06242260A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- plate
- thickness
- cover glass
- sapphire
- 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
Landscapes
- Joining Of Glass To Other Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は時計用カバーガラスに関
するものであり、特に耐擦傷性の良い時計用カバーガラ
スに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watch cover glass, and more particularly to a watch cover glass having good scratch resistance.
【０００２】[0002]
【従来の技術】以前の時計用カバーガラスは有機ガラス
が主流であったが、無機ガラスの化学強化処理技術確立
により時計用カバーガラスとしての強度を得られるよう
になったため、無機ガラスが有機ガラスに代わって主流
を占めるようになった。また、最近では高級品において
耐擦傷性の良いサファイアも用いられている。2. Description of the Related Art In the past, cover glass for watches was mainly made of organic glass, but since the strength as a cover glass for watches was gained by the establishment of chemical strengthening technology for inorganic glass, the inorganic glass was replaced by organic glass. Became the mainstream instead of. Further, recently, sapphire, which has high scratch resistance, is also used in high-grade products.
【０００３】上記有機ガラスは、一般的に射出成形によ
り製造し、その硬度が低いものであるのに対して、無機
ガラスは板材を研削砥石で整形し研磨を行った後、化学
強化処理する製造方法であり、その硬度（ビッカース硬
度Ｈｖ）は５００〜９００ｋｇ／ｍｍ2 と比較的高いも
のである。また、サファイア板はベルヌーイ法若しくは
引き上げ法による素材を必要サイズに切断後、無機ガラ
ス同様研削整形し研磨を行う製造方法であり、その硬度
（Ｈｖ）は２０００〜３０００ｋｇ／ｍｍ2 と極めて高
硬度のものである。The above-mentioned organic glass is generally manufactured by injection molding and has a low hardness, whereas the inorganic glass is manufactured by shaping a plate material with a grinding wheel and polishing it, and then chemically strengthening it. The method has a relatively high hardness (Vickers hardness Hv) of 500 to 900 kg / mm 2 . Further, the sapphire plate is a manufacturing method in which a material by Bernoulli method or pulling method is cut into a required size, and then ground and shaped like an inorganic glass and polished, and its hardness (Hv) is 2000 to 3000 kg / mm 2, which is extremely high hardness. It is a thing.
【０００４】[0004]
【発明が解決しようとする課題】上記有機ガラスからな
る時計用カバーガラスは、射出成形のため数量がまとま
れば低コストであり、形状の自由度もあるが、硬度が低
いため非常に傷が付き易いという問題があった。また数
量が少ない場合には、成形型代が高いため逆にコスト高
となる欠点もあった。The timepiece cover glass made of the organic glass is injection-molded, so that the cost is low if the quantity is gathered and the degree of freedom of the shape is high, but the hardness is low and it is very scratched. There was a problem that it was easy. Further, when the quantity is small, there is a drawback that the cost of the molding die is high and the cost is high.
【０００５】一方、無機ガラスからなる時計用カバーガ
ラスは、有機ガラスよりも硬度が高いものの、時計用カ
バーガラスとしては硬度が低過ぎるため傷が付きやす
く、時刻の判読性を阻害するという問題があった。On the other hand, a watch cover glass made of an inorganic glass has a higher hardness than an organic glass, but since the hardness is too low as a watch cover glass, it is apt to be scratched and hinders the legibility of the time. there were.
【０００６】これらに対し、サファイアからなる時計用
カバーガラスは、硬度が高いことから、通常の携帯にお
いても傷が付かず耐擦傷性については問題ないが、その
反面製造に手間がかかり、原料代や加工代が高いという
問題があり、一般には用いられていなかった。On the other hand, since the watch cover glass made of sapphire has a high hardness, it is not scratched even when it is normally carried and has no problem with scratch resistance, but on the other hand, it takes a lot of time and effort to manufacture it, and the raw material cost is low. It was not generally used because of the problem of high machining cost.
【０００７】そこで本発明は、耐擦傷性とコストの両問
題を解決し、低コストで耐擦傷性の良い時計用カバーガ
ラスを得ることを目的とする。[0007] Therefore, an object of the present invention is to solve both problems of scratch resistance and cost, and to obtain a cover glass for a timepiece which is low in cost and has good scratch resistance.
【０００８】[0008]
【課題を解決するための手段】本発明の時計用カバーガ
ラスは、ガラス板の表面にサファイア板を接合したこと
を特徴とする。また、サファイア板の厚みは５０〜１０
００μｍとしたものであるが、これは厚みが５０μｍよ
り薄いとサファイア板の強度が低すぎるため、接合時の
作業性が悪くなり、一方１０００μｍより厚いと低コス
トとできなくなるためである。さらに、上記サファイア
板の接合面はＲ面としたものであるが、これは製造、お
よび加工が容易で、かつ充分な耐擦傷性と接合性を得ら
れるためである。The cover glass for a timepiece of the present invention is characterized in that a sapphire plate is bonded to the surface of the glass plate. The thickness of the sapphire plate is 50 to 10
The thickness is set to 00 μm, because if the thickness is less than 50 μm, the strength of the sapphire plate is too low, and the workability at the time of bonding is deteriorated, while if it is thicker than 1000 μm, the cost cannot be reduced. Further, the bonding surface of the sapphire plate is the R surface because it is easy to manufacture and process, and sufficient scratch resistance and bonding property can be obtained.
【０００９】[0009]
【作用】本発明によれば、時計用カバーガラスとしての
厚みを必要とする基材は低コストで加工の容易なガラス
で構成し、耐擦傷性の必要な表面のみをサファイア板で
構成したため、低コストでかつ傷が付かないカバーガラ
スとなる。According to the present invention, since the base material that requires a thickness as a watch cover glass is made of glass that is low in cost and easy to process, and only the surface that needs scratch resistance is made of a sapphire plate, The cover glass is low-cost and scratch-free.
【００１０】[0010]
【実施例】以下本発明の実施例を図面に基づき説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は本発明の実施例を示す時計用カバー
ガラスの縦断面図であり、ガラス板１の表面にサファイ
ア板２を接着剤３により接合したものである。また、ガ
ラス板１とサファイア板２のエッジ部には面取り１ａ、
２ａがそれぞれ形成されている。そして、このカバーガ
ラスを、サファイア板２が表面側となるように時計ケー
ス（不図示）に取付ればよい。FIG. 1 is a longitudinal sectional view of a watch cover glass showing an embodiment of the present invention, in which a sapphire plate 2 is bonded to a surface of a glass plate 1 with an adhesive 3. Further, chamfers 1a are formed on the edges of the glass plate 1 and the sapphire plate 2,
2a are formed respectively. Then, this cover glass may be attached to a watch case (not shown) so that the sapphire plate 2 is on the front side.
【００１２】上記ガラス板１は、無機ガラスまたは有機
ガラスからなるものであり、例えば表裏が研磨された板
厚０．７ｍｍの無機ガラスにイオン交換法による化学強
化処理を施したものである。また、サファイア板２は、
ＥＦＧ法などの引き上げ法により製造した後研磨したも
のであり、例えばＥＦＧ法による板厚５００μｍのサフ
ァイア板を、３００μｍの厚みに両面研磨することで得
られる。さらに、接着剤３はエポキシ系などで、液状ま
たはシート状のものを用い、その厚みは５０μｍ以下と
することが望ましい。The glass plate 1 is made of an inorganic glass or an organic glass, and is, for example, an inorganic glass having a plate thickness of 0.7 mm whose front and back surfaces are polished and which has been chemically strengthened by an ion exchange method. Also, the sapphire plate 2 is
The sapphire plate is manufactured by a pulling method such as the EFG method and then polished. For example, a sapphire plate having a plate thickness of 500 μm obtained by the EFG method is obtained by double-side polishing to a thickness of 300 μm. Further, the adhesive 3 is made of epoxy or the like, and is liquid or sheet-like, and its thickness is preferably 50 μm or less.
【００１３】そして、上記板厚０．７ｍｍのガラス板１
と板厚３００μｍ（０．３ｍｍ）のサファイア板２を、
最終形状よりも大きな形状として接合し、端面の加工や
面取り部１ａ、２ａの加工をすることで厚み１ｍｍのカ
バーガラスを得ることができる。The glass plate 1 having a plate thickness of 0.7 mm
And a sapphire plate 2 having a plate thickness of 300 μm (0.3 mm),
It is possible to obtain a cover glass having a thickness of 1 mm by joining as a shape larger than the final shape and processing the end faces and the chamfered portions 1a and 2a.
【００１４】なお、上記実施例では、サファイア板２を
引き上げ法により製造したものを示したが、その他の方
法で製造したものでもよい。また、ガラス板１とサファ
イア板２をそれぞれ予め最終形状に加工した後、両者を
接合することで本発明のカバーガラスを得ることもでき
る。Although the sapphire plate 2 is manufactured by the pulling method in the above embodiment, it may be manufactured by other methods. Alternatively, the cover glass of the present invention can be obtained by processing the glass plate 1 and the sapphire plate 2 into final shapes in advance and then joining the two.
【００１５】このようにして得られたカバーガラスの品
質確認を行った結果、耐圧強度、衝撃強度、及び耐擦傷
性はガラス無垢材の場合より向上しており、外観、及び
環境耐久品質についても全く問題がなかった。As a result of confirming the quality of the cover glass thus obtained, the pressure resistance, the impact strength and the scratch resistance are higher than those of the solid glass material, and the appearance and the environmental durability quality are also improved. There was no problem at all.
【００１６】なお、上記ガラス板１として無機ガラス板
に化学強化処理を行ったのは、実施例のガラス板１が薄
いことから、カバーガラスの強度を上げるために行った
ものであり、ガラス板１が厚い場合は化学強化処理を行
わなくても良い。また、サファイア板２を接合する前に
化学強化処理を行ったのは、接合方法が接着のために、
接着後に処理を行うと処理温度が高いため接着品質の劣
化につながるからである。したがって、後述するよう
に、接合方法が溶着あるいはロウ付けの場合は、接合後
に化学強化処理を行ってもよい。Incidentally, the reason why the inorganic glass plate was chemically strengthened as the glass plate 1 was to increase the strength of the cover glass because the glass plate 1 of the example was thin. When 1 is thick, the chemical strengthening treatment may not be performed. Further, the chemical strengthening treatment was performed before joining the sapphire plate 2 because the joining method is adhesion,
This is because if the treatment is performed after the adhesion, the treatment temperature is high and the adhesion quality is deteriorated. Therefore, as will be described later, when the joining method is welding or brazing, chemical strengthening treatment may be performed after joining.
【００１７】また、上記サファイア板２は酸化アルミニ
ウム（Ａｌ2 Ｏ3 ）の単結晶体であり、図７に示すよう
な結晶構造を有している。そして、上記サファイア板２
の主面は、図７に示すＲ面となるようにすれば良い。こ
れは、主面をＲ面としたものは製造および加工が容易で
あり、鏡面研磨しやすいためである。さらに、サファイ
ア板２の厚みは、低コストで充分な強度を持たせるため
に５０〜１０００μｍの範囲内としたものが良い。The sapphire plate 2 is a single crystal of aluminum oxide (Al 2 O 3 ) and has a crystal structure as shown in FIG. And the sapphire plate 2
The main surface of the may be the R surface shown in FIG. This is because the main surface having the R surface is easy to manufacture and process and is easy to be mirror-polished. Furthermore, the thickness of the sapphire plate 2 is preferably in the range of 50 to 1000 μm in order to provide sufficient strength at low cost.
【００１８】次に本発明の他の実施例を説明する。Next, another embodiment of the present invention will be described.
【００１９】図２に示すカバーガラスは、ガラス板１と
サファイア板２を接着剤を用いるこなく、溶着により接
合したものである。具体的には、前記実施例と同様の厚
み３００μｍのサファイア板２と、化学強化処理を行わ
ない厚み０．７ｍｍの無機ガラスからなるガラス板１の
二枚を重ねて加熱した後、鏡面仕上げのセラミック型に
て加圧した状態で徐冷することで得られる。The cover glass shown in FIG. 2 is formed by joining the glass plate 1 and the sapphire plate 2 by welding without using an adhesive. Specifically, two sapphire plates 2 having a thickness of 300 μm and the glass plate 1 made of inorganic glass having a thickness of 0.7 mm which is not subjected to chemical strengthening are stacked and heated, and then mirror-finished. It can be obtained by gradually cooling while being pressurized in a ceramic mold.
【００２０】なお、ガラス板１に化学強化処理を行わな
かったのは、溶着時の加熱により強化層はアニーリング
されるため、溶着前の化学強化処理は意味をなさないか
らである。また、溶着時の加熱温度はガラス板１の軟化
点に出来るだけ近付けることが好ましく、冷却時の加圧
型の表面状態はガラス板１の表面にそのまま写るため充
分仕上げを良くし、かつ加圧型も加熱を行った後加圧す
れば良い。この加圧型は耐熱性と仕上性の良い材質でな
くてはならないため、今回はセラミックを用いたが炭化
タングステン（ＷＣ）等の超硬材でも良い。The chemical strengthening treatment was not performed on the glass plate 1 because the strengthening layer is annealed by the heating during welding, and the chemical strengthening treatment before welding does not make sense. Further, it is preferable that the heating temperature at the time of welding is as close as possible to the softening point of the glass plate 1, and the surface condition of the pressure die at the time of cooling is directly reflected on the surface of the glass plate 1, so that the finish is sufficiently improved and the pressure die is also used. It is sufficient to pressurize after heating. Since this pressurizing mold must be made of a material having good heat resistance and finishing properties, ceramic is used this time, but a super hard material such as tungsten carbide (WC) may be used.
【００２１】この結果、溶着により得られたカバーガラ
スは、耐薬品性等の面で優位性があり、時計用カバーガ
ラスとしての耐擦傷性、外観、環境耐久品質に付いても
問題がなかった。As a result, the cover glass obtained by welding is superior in chemical resistance and the like, and there is no problem in terms of scratch resistance, appearance and environmental durability as a watch cover glass. .
【００２２】さらに本発明の他の実施例を説明する。Further, another embodiment of the present invention will be described.
【００２３】図３に示すように、ガラス板１とサファイ
ア板２をロウ材４を用いてロウ付けによって接合するこ
ともできる。ここで、ロウ材４が金属ロウの場合は、ガ
ラス板１とサファイア板２間に不透明のロウ材４が介在
することとなるが、図３に示す様に、外周部分のみにロ
ウ材４を介在させればよい。また、ロウ材４を低融点透
明ガラスとすることにより、全面にロウ材４を介在させ
ることが可能となり、透明ガラスができるだけでなく、
低融点カラーガラスを用いればカラーデザインも出来
る。さらに、何色かのカラーガラスからなるロウ材４を
組み合わせて模様としてデザインすることも可能であ
る。As shown in FIG. 3, the glass plate 1 and the sapphire plate 2 can also be joined by brazing using a brazing material 4. Here, when the brazing material 4 is a metal brazing material, the opaque brazing material 4 is interposed between the glass plate 1 and the sapphire plate 2. However, as shown in FIG. You can intervene. Further, by using the low melting point transparent glass as the brazing material 4, it becomes possible to interpose the brazing material 4 on the entire surface, and not only the transparent glass can be formed but also
Color design is possible by using low melting point color glass. Further, it is possible to design a pattern by combining the brazing materials 4 made of several colored glasses.
【００２４】以上の実施例では、ガラス板１の一方のみ
にサファイア板２を接合したものを示したが、図４に示
すように、サファイア板２をガラス板１の表裏に接合す
ることもできる。これは、時計ケースに組み込まれたカ
バーガラスは外表面のみ傷が付かない様にしてあれば良
いが、カバーガラス単体で取り扱う等の際には内面に傷
が付く可能性があるためであり、図４に示すように、ガ
ラス板１の表裏にサファイア板２を接合することによ
り、カバーガラス単体における傷を防止できる。Although the sapphire plate 2 is bonded to only one side of the glass plate 1 in the above embodiments, the sapphire plate 2 may be bonded to the front and back of the glass plate 1 as shown in FIG. . This is because the cover glass built into the watch case should not be scratched only on the outer surface, but when handling the cover glass alone, the inner surface may be scratched. As shown in FIG. 4, by bonding the sapphire plate 2 to the front and back of the glass plate 1, it is possible to prevent scratches on the cover glass alone.
【００２５】さらに、図５には、ガラス板１の形状がフ
ラットでない場合の実施例を示す。図５（Ａ）は、凹部
１ｂを備えた箱形のガラス板１の表面にサファイア板２
を接合した実施例であり、図５（Ｂ）は、凹部１ｂの内
面をカットしたガラス板１の表面にサファイア板２を接
合した実施例である。また、図５（Ｃ）は、カレンダー
表示の拡大レンズ１ｃを内面に成形したガラス板１の表
面にサファイア板２を接合した実施例である。Further, FIG. 5 shows an embodiment in which the shape of the glass plate 1 is not flat. In FIG. 5A, a sapphire plate 2 is formed on the surface of a box-shaped glass plate 1 having a recess 1b.
5B is an example in which the sapphire plate 2 is joined to the surface of the glass plate 1 in which the inner surface of the recess 1b is cut. Further, FIG. 5C shows an embodiment in which a sapphire plate 2 is joined to the surface of a glass plate 1 having an inner surface formed with a magnifying lens 1c for calendar display.
【００２６】このような図５に示す形状のカバーガラス
をサファイアのみで形成しようとすれば、凹部１ｂや拡
大レンズ１ｃ部分を加工することが極めて困難であり、
仮に加工できたとしても、その表面仕上げは満足なもの
とできず、しかも非常にコスト高となってしまう。これ
に対し、本発明では、凹部１ｂや拡大レンズ１ｃは、ガ
ラス板１に加工すればよいことから、容易に得ることが
可能となる。If the cover glass having the shape shown in FIG. 5 is to be formed only by sapphire, it is extremely difficult to process the concave portion 1b and the magnifying lens 1c.
Even if it could be processed, its surface finish would not be satisfactory and the cost would be very high. On the other hand, in the present invention, the recess 1b and the magnifying lens 1c can be easily obtained because the glass plate 1 can be processed.
【００２７】なお、ガラス板１の形状は図５の形状に限
るものではなく、自由なものとできる。また、成形ガラ
スからなるガラス板１とサファイア板２を溶着により接
合する場合は、上記加圧型を成形型にすることにより、
溶着とガラス成形を同時に行うことが可能である。The shape of the glass plate 1 is not limited to the shape shown in FIG. 5, but may be any shape. Further, when the glass plate 1 made of molded glass and the sapphire plate 2 are joined by welding, by using the pressure mold as a molding mold,
It is possible to perform welding and glass forming at the same time.
【００２８】さらに、図６に示すカバーガラスは、サフ
ァイア板２の内面に塗装、印刷、蒸着、イオンプレーテ
ィング等により模様５を施した上で、ガラス板１に接着
したものである。Further, the cover glass shown in FIG. 6 is obtained by applying a pattern 5 on the inner surface of the sapphire plate 2 by painting, printing, vapor deposition, ion plating or the like, and then adhering it to the glass plate 1.
【００２９】従来のガラスのみからなるものでは、カバ
ーガラスの外表面への印刷や塗装等を行っても次第に剥
がれるという問題点があったが、図６に示す実施例で
は、印刷や塗装等による模様５が直接外表面に露出せ
ず、サファイア板２で覆われているので、剥がれる恐れ
はなく、カバーガラス外表面付近への印刷、塗装等が可
能となるのである。そして、外表面側に印刷、塗装等が
できることにより、カバーガラスの立体感が表現出来る
ようになり、高級感が増し、デザイン自由度も広がるも
のである。さらにガラス板１の下面にも印刷、塗装等の
模様６を形成すれば、カバーガラスの外面と内面の二面
で表現出来るため、より立体的な表現ができる。さらに
接合するガラス板１の枚数を増していけば三面表現、四
面表現、それ以上も可能である。In the case of the conventional glass only, there is a problem that the outer surface of the cover glass is gradually peeled off even if it is printed or painted, but in the embodiment shown in FIG. Since the pattern 5 is not directly exposed on the outer surface and is covered with the sapphire plate 2, there is no risk of peeling off, and printing, painting or the like can be performed near the outer surface of the cover glass. By being able to print, paint, etc. on the outer surface side, it becomes possible to express the three-dimensional effect of the cover glass, increasing the sense of quality and expanding the degree of freedom in design. Further, if a pattern 6 such as printing or painting is formed on the lower surface of the glass plate 1, it can be expressed by the outer surface and the inner surface of the cover glass, so that a more three-dimensional expression can be achieved. Furthermore, if the number of glass plates 1 to be joined is increased, three-sided expression, four-sided expression, and more are possible.
【００３０】実験例 ここで、図１に示す本発明のカバーガラスを試作して、
品質テストを行った。試料として、直径２８．５ｍｍ
で、厚みが０．５ｍｍ、１．２ｍｍ、１．７ｍｍの３種
類のガラス板１に対し、それぞれ化学強化処理の有無に
よる６種類のガラス板１を用意し、各ガラス板１に、同
じ直径で厚みが０．３ｍｍのサファイア板２をエポキシ
系の接着剤３を用いて接着厚み０．０５ｍｍで接合し
た。 Experimental Example Here, the cover glass of the present invention shown in FIG.
A quality test was done. 28.5mm diameter as a sample
Then, for the three types of glass plates 1 with thicknesses of 0.5 mm, 1.2 mm and 1.7 mm, 6 types of glass plates 1 are prepared depending on the presence or absence of chemical strengthening treatment, and each glass plate 1 has the same diameter. Then, the sapphire plate 2 having a thickness of 0.3 mm was joined with the epoxy adhesive 3 with an adhesive thickness of 0.05 mm.
【００３１】まず、外観を観察して接着面のゴミや気
泡、表面の傷などを調べたところ、接着作業の条件を適
切に設定すればこれらの問題はなかった。First, when the appearance was observed and dusts and bubbles on the adhering surface and scratches on the surface were examined, these problems did not occur if the adhering conditions were appropriately set.
【００３２】次に耐熱性試験として、−２０〜８０℃の
熱サイクルを３サイクル／日で与えても特に外観の変化
は見られなかった。したがって、時計の品質保証水準と
しては問題ないレベルにあることがわかった。Next, as a heat resistance test, no particular change in appearance was observed even when a heat cycle of -20 to 80 ° C. was applied at 3 cycles / day. Therefore, it was found that there is no problem in the quality assurance level of the watch.
【００３３】さらに、耐水テストとして常温および４０
℃の水中に２４時間浸漬しても外観の変化はなかった。
また、耐薬品テストとして、エチルアルコールおよび塩
化メチレンによって拭いたり、これらの薬品中に５〜３
０分浸漬したところ、塩化メチレンに浸漬した場合は接
着剤の一部が剥離したため、塩化メチレンによる洗浄は
できないことがわかった。Further, as a water resistance test, at room temperature and 40
There was no change in appearance even when immersed in water at ℃ for 24 hours.
Also, as a chemical resistance test, wipe with ethyl alcohol and methylene chloride, or add 5 to 3 in these chemicals.
When it was soaked for 0 minutes, it was found that it could not be washed with methylene chloride because part of the adhesive was peeled off when it was soaked in methylene chloride.
【００３４】次に、耐擦傷テストとして、４００ｃｃの
砂を９５ｃｍの高さよりカバーガラス上に落下させ、
傷、くもりの発生を観察したところ、いずれも外観の変
化はなく、極めて耐擦傷性に優れていることがわかっ
た。さらに、耐候性テストとして、キセノンランプによ
る３５０ｎｍ波長測定で１５０Ｗ／ｍ2 の照度に１１万
ｋＪ／ｍ2 の紫外線照射を行ったが、外観の変化はなか
った。Next, as a scratch resistance test, 400 cc of sand was dropped onto the cover glass from a height of 95 cm,
Observation of generation of scratches and haze revealed that there was no change in appearance and that the scratch resistance was extremely excellent. Further, as a weather resistance test, UV irradiation of 110,000 kJ / m 2 was performed at an illuminance of 150 W / m 2 by wavelength measurement at 350 nm with a xenon lamp, but there was no change in appearance.
【００３５】次に、耐圧テストとして、内径２６ｍｍの
駒でカバーガラスを支持し、中央に直径１０ｍｍで１０
ｋｇの荷重を１０秒間加えたところ、いずれも割れや接
着剤の剥離、白濁などはなかった。Next, as a pressure resistance test, the cover glass was supported by a piece having an inner diameter of 26 mm, and the center was 10 mm in diameter.
When a load of kg was applied for 10 seconds, neither cracking nor peeling of the adhesive nor clouding occurred.
【００３６】さらに、上記耐圧テストと同様にして、破
壊するまで荷重を加え、破壊した時の荷重を調べた。そ
の結果は表１に示すように、比較例であるガラス板のみ
のカバーガラスに対し、サファイア板を接着した本発明
のカバーガラスは破壊荷重が大きいことがわかる。Further, in the same manner as the withstand voltage test, a load was applied until it was broken, and the load at the time of breaking was examined. The results, as shown in Table 1, show that the cover glass of the present invention having the sapphire plate adhered thereto has a large breaking load as compared with the cover glass having only the glass plate as the comparative example.
【００３７】[0037]
【表１】 [Table 1]
【００３８】次に、衝撃強度テストとして、内径２５ｍ
ｍのゴム板でカバーガラスを支持し、中央に２８ｇの鋼
球を６０ｃｍ以下のさまざまな高さから落下させ、ヒビ
や割れの発生する高さを調べた。また、カバーガラスを
時計ケースに接合して、樫板上に落下させてヒビ、割れ
の確認をする試験も行った。結果は表２に示す通り、本
発明のカバーガラスは、耐衝撃性にも優れていることが
わかる。Next, as an impact strength test, an inner diameter of 25 m
The cover glass was supported by a rubber plate of m, 28 g of steel balls were dropped in the center from various heights of 60 cm or less, and the height at which cracks and cracks were generated was examined. A test was also conducted in which the cover glass was joined to the watch case and dropped on the oak board to check for cracks and cracks. As the results are shown in Table 2, it can be seen that the cover glass of the present invention has excellent impact resistance.
【００３９】[0039]
【表２】 [Table 2]
【００４０】[0040]
【発明の効果】以上述べた通り本発明によれば、ガラス
板の表面にサファイア板を接合して時計用カバーガラス
を構成したことにより、低コストで耐擦傷性の良い時計
用カバーガラスが得られるだけでなく、ガラス板部分は
加工が容易であるから、形状に自由度を持たせられ、立
体表現等のデザイン自由度も拡大されるなどの非常に大
きな効果をもたらすことができる。As described above, according to the present invention, a sapphire plate is bonded to the surface of a glass plate to form a watch cover glass, and thus a watch cover glass for a watch with low cost and good scratch resistance is obtained. In addition, since the glass plate portion is easy to process, it is possible to bring about a great effect such that the shape has a degree of freedom and the degree of freedom in design such as three-dimensional expression is expanded.
【図１】本発明による時計用カバーガラスの実施例を示
す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of a watch cover glass according to the present invention.
【図２】本発明による時計用カバーガラスの他の実施例
を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing another embodiment of the timepiece cover glass according to the present invention.
【図３】本発明による時計用カバーガラスの他の実施例
を示す縦断面図である。FIG. 3 is a vertical sectional view showing another embodiment of the timepiece cover glass according to the present invention.
【図４】本発明による時計用カバーガラスの他の実施例
を示す縦断面図である。FIG. 4 is a vertical sectional view showing another embodiment of the watch cover glass according to the present invention.
【図５】（Ａ）〜（Ｃ）はそれぞれ本発明による時計用
カバーガラスの他の実施例を示す縦断面図である。5 (A) to 5 (C) are vertical sectional views showing another embodiment of the timepiece cover glass according to the present invention.
【図６】本発明による時計用カバーガラスの他の実施例
を示す縦断面図である。FIG. 6 is a vertical sectional view showing another embodiment of the timepiece cover glass according to the present invention.
【図７】サファイアの結晶構造を示す図である。FIG. 7 is a diagram showing a crystal structure of sapphire.
１：ガラス板 ２：サファイア板 ３：接着剤 ４：ロウ材 ５、６：模様 1: Glass plate 2: Sapphire plate 3: Adhesive 4: Brazing material 5, 6: Pattern
Claims (1)
ｍのサファイア板を接合したことを特徴とする時計用カ
バーガラス。1. The surface of a glass plate has a thickness of 50 to 1000 μm.
A cover glass for a watch, which is formed by joining m sapphire plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5024266A JP2777041B2 (en) | 1993-02-12 | 1993-02-12 | Watch cover glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5024266A JP2777041B2 (en) | 1993-02-12 | 1993-02-12 | Watch cover glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06242260A true JPH06242260A (en) | 1994-09-02 |
| JP2777041B2 JP2777041B2 (en) | 1998-07-16 |
Family
ID=12133430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5024266A Expired - Lifetime JP2777041B2 (en) | 1993-02-12 | 1993-02-12 | Watch cover glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2777041B2 (en) |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4886871U (en) * | 1972-01-20 | 1973-10-20 | ||
| JPH05333164A (en) * | 1992-06-02 | 1993-12-17 | Seiko Epson Corp | Double-layer cover glass for watch |
-
1993
- 1993-02-12 JP JP5024266A patent/JP2777041B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4886871U (en) * | 1972-01-20 | 1973-10-20 | ||
| JPH05333164A (en) * | 1992-06-02 | 1993-12-17 | Seiko Epson Corp | Double-layer cover glass for watch |
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