JP3570089B2 - Watches - Google Patents

Description

【０００１】
【発明の属する技術分野】
この発明は腕時計に関する。
【０００２】
【従来の技術】
従来、腕時計においては、外部からの衝撃を緩衝して時計機構を保護する必要がある。このような腕時計の緩衝構造には、例えば腕時計ケースと時計バンドを弾性材料によって一体的に構成し、この弾性材料からなる時計バンドの一部に裏蓋の裏面側に突出する緩衝部を形成し、この緩衝部によって裏蓋の裏面に衝撃が直接加わらないように裏蓋の裏面を浮かせた構造のもの、あるいは腕時計ケースの裏面に裏蓋を複数のビスによって取り付ける際、これら複数のビスによって弾性材料かなる緩衝部材を裏蓋の裏面に同時に固定した構造のものなどがある。
【０００３】
【発明が解決しようとする課題】
しかしながら、前者の緩衝構造では、腕時計ケースと時計バンドとが一体的に構成され、その一部に緩衝部を形成しているため、腕時計ケースおよび時計バンドが材質の制約を受けることになり、このため腕時計ケースおよび時計バンドを弾性材料で形成しなければならず、金属感のあるものを得ることができないという問題がある。
また、後者の緩衝構造では、複数のビスで緩衝部材を裏蓋に取り付けるため、緩衝部材を均一な力で固定することが難しく、緩衝部材が外れやすいという問題がある。
【０００４】
この発明の課題は、腕時計ケースや時計バンドが材質の制約を受けずに、緩衝部材を均一な力で外れにくく固定できるようにすることである。
【０００５】
【課題を解決するための手段】
この発明は、裏面側の外周面に段差部が形成されているとともに、裏面側の内壁面に嵌合部が形成された腕時計ケースと、この腕時計ケースの裏面に外周部が段差部側に突出して配置されるとともに、嵌合部に嵌着する嵌着部が形成された裏蓋と、腕時計ケースの段差部に配置されて裏蓋の外周部によって押し付けられる鍔部が形成されているとともに、この鍔部から裏蓋の外周部の裏面より延出する延出部が形成された弾性材料からなる緩衝部材とを備えたことを特徴とするものである。
【０００６】
したがって、この発明によれば、腕時計ケースの嵌合部に裏蓋の嵌着部を嵌着させることにより、腕時計ケースの段差部に配置された緩衝部材の鍔部を裏蓋の外周部で腕時計ケースの段差部に押し付けて固定するので、裏蓋の外周部によって緩衝部材の鍔部を均一な力で外れにくく固定することができ、しかも緩衝部材が腕時計ケースや時計バンドとは別部材であるから、従来のように腕時計ケースや時計バンドが材質の制約を受けることがなく、金属感のあるものを得ることが可能になる。
【０００７】
【発明の実施の形態】
以下、図１および図２を参照して、この発明の腕時計の第１実施形態について説明する。
図１は腕時計の要部拡大断面図、図２はその要部の分解斜視図である。これらの図において、１は腕時計ケースである。この腕時計ケース１の上部には、時計ガラス２がパッキン３を介して装着されており、腕時計ケース１の内部には、図１に２点鎖線で示すように、時計モジュール４が配置されている。また、腕時計ケース１の側壁部には、押釦スイッチ５が設けられている。さらに、腕時計ケース１の下部には、裏蓋６が防水パッキン７を介して取り付けられているとともに、この裏蓋６によって緩衝部材８が取り付けられている。
【０００８】
この場合、腕時計ケース１の下部外周面には段差部１０が形成されているとともに、その下部内壁面には雌ねじ部（嵌合部）１１が形成されており、段差部１０と雌ねじ部１１との間に位置する腕時計ケース１の下面には、防水パッキン７が配置する防水溝１２が環状に形成されている。
一方、裏蓋６には腕時計ケース１の段差部１０側に突出して配置される外周部１３が形成されているとともに、裏蓋６の内面には腕時計ケース１の雌ねじ部１１に螺合する雄ねじ部（嵌着部）１４が形成されている。
緩衝部材８は、ポリウレタンなどのエラストマー（合成ゴム）や軟質の合成樹脂などの弾性材料からなり、腕時計ケース１の段差部１０に配置されて裏蓋６の外周部１３によって押し付けられる鍔部１５と、この鍔部１５から裏蓋６の外周部１３の側方を通って裏蓋６の裏面よりも下側に斜めに延出する延出部１６とを有し、これらがリング状に一体に形成された構造になっている。
【０００９】
なお、押釦スイッチ５は、図２に示すように、腕時計ケース１の側壁部の複数個所に設けられている。すなわち、押釦スイッチ５は、図１に示すように、腕時計ケース１の側壁部の所定個所に形成された貫通孔１ａ内に設けられた筒状部材１７を備えている。この筒状部材１７内には、釦軸１８の先端が腕時計ケース１内に突出する釦軸１８の他端部に釦頭部１９が設けられた釦部材２０が配置されているとともに、筒状部材１７の内面および釦部材２０の軸部１８の外周面に圧接する防水リング２１が設けられている。そして、防水リング２１と釦頭部１９の間における釦軸１８の外周には、釦部材２０を腕時計ケース１の外部に向けて付勢するコイルバネ２２が設けられており、腕時計ケース１の内部突出した釦軸１８の先端には、抜け止め用のＥリング２３が取り付けられている。
【００１０】
このような腕時計では、図１に示すように、裏蓋６の外周部１３の上側に緩衝部材８の鍔部１５が位置し、かつその外周部１３の下側に緩衝部材８の延出部１６が位置するように、緩衝部材８を裏蓋６の外周部１３に配置し、この状態で裏蓋６の雄ねじ部１４を腕時計ケース１の雌ねじ部１１に螺合させて締め付けると、腕時計ケース１の段差部１０に緩衝部材８の鍔部１５が裏蓋６の外周部１３によって押し付けられて固定されるため、緩衝部材８の鍔部１５を裏蓋６の外周部１３によって均一な力で固定することができるとともに、緩衝部材８の鍔部１５が裏蓋６の外周部１３の上側に位置し、かつ緩衝部材８の延出部１６が外周部１３の下側に向けて斜めに位置した状態で取り付けられているので、緩衝部材８が外れにくい。
【００１１】
したがって、この腕時計では、緩衝部材８の延出部１６が裏蓋６の外周部１３の下側に斜めに突出しているので、緩衝部材８の延出部１６によって裏蓋６の裏面を浮かせることができ、これにより裏蓋６の裏面に衝撃が直接加わらないようにすることができ、外部からの衝撃を緩衝して腕時計ケース１内の時計モジュール４を良好に保護することができる。
また、この腕時計では、緩衝部材８が腕時計ケース１や時計バンド（図示せず）とは別部材であるから、従来のように腕時計ケース１や時計バンドが材質の制約を受けることがなく、金属などで形成することができるため、金属感のあるものを得ることができる。
【００１２】
次に、図３および図４を参照して、この発明の腕時計の第２実施形態について説明する。なお、図１および図２に示された第１実施形態と同一部分には同一符号を付し、その説明は省略する。
この腕時計は、緩衝部材８に防水パッキン部２５を一体に形成した以外は第１実施形態とほぼ同じ構造になっている。すなわち、緩衝部材８は、第１実施形態と同様、弾性材料からなり、鍔部１５と延出部１６とがリング状に一体に形成されているとともに、図３および図４に示すように、鍔部１５に連結部２６を介して防水パッキン部２５が一体に形成された構造になっている。この場合、腕時計ケース１の段差部１０と雌ねじ部１１との間に位置する腕時計ケース１の下面には、図３に示すように、防水パッキン部２５および連結部２６が配置する防水溝２７がその下面中央から段差部１０に亘って形成されている。
【００１３】
このような腕時計では、第１実施形態と同様、緩衝部材８を裏蓋６の外周部１３に配置した状態で、裏蓋６の雄ねじ部１４を腕時計ケース１の雌ねじ部１１に螺合させて締め付けると、腕時計ケース１の段差部１０に緩衝部材８の鍔部１５が裏蓋６の外周部１３によって押し付けられて固定されるのと同時に、防水パッキン部２５が外周部１３によって押し付けられて固定されるので、第１実施形態と同様の作用効果があるほか、特に緩衝部材８と防水パッキン部２５を一度に取り付けることができるため、組立て作業性が良く、しかも緩衝部材８に防水パッキン部２５が一体に形成されているので、部品点数が少なく、部品の管理が容易になる。
【００１４】
なお、上記第１、第２実施形態では、腕時計ケース１の内壁面に雌ねじ部１１を設け、裏蓋６に雄ねじ部１４を設け、この雄ねじ部１４を雌ねじ部１１に螺合させる構造について述べたが、これに限らず、腕時計ケース１の内壁面に嵌合部を設け、裏蓋６に嵌合部に嵌着する嵌着部を設け、裏蓋６の嵌着部を腕時計ケースの嵌合部に差し込んで嵌着させる構造でも良い。
【００１５】
【発明の効果】
以上説明したように、この発明によれば、腕時計ケースの嵌合部に裏蓋の嵌着部を嵌着させることにより、腕時計ケースの段差部に配置された緩衝部材の鍔部を裏蓋の外周部によって腕時計ケースの段差部に押し付けて固定するので、裏蓋の外周部によって緩衝部材の鍔部を均一な力で外れにくく固定することができ、しかも緩衝部材が腕時計ケースや時計バンドとが別部材であるから、従来のように腕時計ケースや時計バンドが材質の制約を受けることがなく、腕時計ケースおよび時計バンドを金属で形成することができるので、金属感のあるものを得ることが可能になる。
【図面の簡単な説明】
【図１】この発明の腕時計の第１実施形態を示した要部拡大断面図。
【図２】図１の腕時計の要部分解斜視図。
【図３】この発明の腕時計の第２実施形態を示した要部拡大断面図。
【図４】図３の緩衝部材の一部破断した斜視図。
【符号の説明】
１ 腕時計ケース
６ 裏蓋
８ 緩衝部材
１０ 段差部
１１ 雌ねじ部
１３ 裏蓋の外周部
１４ 雄ねじ部
１５ 鍔部
１６ 延出部
２５ 防水パッキン部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wristwatch.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a wristwatch, it is necessary to cushion an external impact to protect a timepiece mechanism. In such a buffer structure of a watch, for example, a watch case and a watch band are integrally formed of an elastic material, and a buffer portion protruding toward the back side of the back cover is formed in a part of the watch band made of the elastic material. , With a structure in which the back of the back cover is raised so that the shock is not directly applied to the back of the back cover by this buffer part, or when the back cover is attached to the back of the watch case with multiple screws, the elasticity is There is a structure in which a buffer member made of a material is simultaneously fixed to the back surface of the back cover.
[0003]
[Problems to be solved by the invention]
However, in the former buffer structure, the watch case and the watch band are integrally formed, and a buffer portion is formed in a part of the watch case and the watch band. Therefore, the watch case and the watch band must be formed of an elastic material, and there is a problem in that a watch having a metallic appearance cannot be obtained.
Further, in the latter buffer structure, since the buffer member is attached to the back cover with a plurality of screws, it is difficult to fix the buffer member with a uniform force, and there is a problem that the buffer member is easily detached.
[0004]
It is an object of the present invention to provide a wristwatch case and a watch band which can be fixed with a uniform force so that a shock-absorbing member is not easily detached without being restricted by a material.
[0005]
[Means for Solving the Problems]
The present invention provides a watch case in which a step portion is formed on the outer peripheral surface on the back side and a fitting portion is formed on the inner wall surface on the back side, and an outer peripheral portion protrudes toward the step portion on the back surface of the watch case. A rear cover formed with a fitting portion to be fitted to the fitting portion, and a flange portion arranged on the step portion of the watch case and pressed by the outer peripheral portion of the back cover are formed, And a buffer member made of an elastic material and having an extension formed from the flange to extend from the back surface of the outer periphery of the back cover.
[0006]
Therefore, according to the present invention, by fitting the fitting portion of the back cover to the fitting portion of the watch case, the flange portion of the cushioning member arranged at the step portion of the watch case is attached to the outer peripheral portion of the watch case by the watch. Since it is fixed by pressing against the step portion of the case, the flange portion of the cushioning member can be fixed with a uniform force by the outer peripheral portion of the back cover, and it is possible to fix the cushioning member separately from the watch case and the watch band. Therefore, the watch case and the watch band are not restricted by the material as in the related art, and it is possible to obtain a watch with a metallic feeling.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of a wristwatch according to the present invention will be described with reference to FIGS.
FIG. 1 is an enlarged sectional view of a main part of a wristwatch, and FIG. 2 is an exploded perspective view of the main part. In these figures, reference numeral 1 denotes a watch case. A watch glass 2 is mounted on the upper part of the watch case 1 via a packing 3, and a watch module 4 is arranged inside the watch case 1 as shown by a two-dot chain line in FIG. 1. . A push button switch 5 is provided on the side wall of the watch case 1. Further, a back cover 6 is attached to a lower portion of the watch case 1 via a waterproof packing 7, and a buffer member 8 is attached by the back cover 6.
[0008]
In this case, a step portion 10 is formed on the lower outer peripheral surface of the watch case 1, and a female screw portion (fitting portion) 11 is formed on the lower inner wall surface, and the step portion 10 and the female screw portion 11 are formed. A waterproof groove 12 in which the waterproof packing 7 is disposed is formed in an annular shape on the lower surface of the watch case 1 located therebetween.
On the other hand, an outer peripheral portion 13 is formed on the back cover 6 so as to protrude toward the step portion 10 side of the watch case 1, and an inner thread of the female screw portion 11 of the watch case 1 is formed on the inner surface of the back cover 6. A portion (fitting portion) 14 is formed.
The buffer member 8 is made of an elastic material such as an elastomer (synthetic rubber) such as polyurethane or a soft synthetic resin, and is disposed on the step portion 10 of the watch case 1 and pressed by the outer peripheral portion 13 of the back cover 6. An extending portion 16 extending obliquely from the flange portion 15 to the lower side of the back surface of the back cover 6 through the side of the outer peripheral portion 13 of the back cover 6, and these are integrally formed in a ring shape. It is a formed structure.
[0009]
The push button switches 5 are provided at a plurality of locations on the side wall of the watch case 1 as shown in FIG. That is, as shown in FIG. 1, the push button switch 5 includes a tubular member 17 provided in a through hole 1 a formed at a predetermined position on the side wall of the watch case 1. A button member 20 having a button head 19 provided at the other end of the button shaft 18 in which the tip of the button shaft 18 protrudes into the watch case 1 is disposed in the cylindrical member 17. A waterproof ring 21 is provided which presses against the inner surface of the member 17 and the outer peripheral surface of the shaft portion 18 of the button member 20. On the outer periphery of the button shaft 18 between the waterproof ring 21 and the button head 19, a coil spring 22 for urging the button member 20 toward the outside of the watch case 1 is provided. An E-ring 23 for retaining is attached to the tip of the button shaft 18.
[0010]
In such a wristwatch, as shown in FIG. 1, the flange 15 of the cushioning member 8 is located above the outer periphery 13 of the back cover 6, and the extension of the cushioning member 8 is located below the outer periphery 13. When the cushioning member 8 is arranged on the outer peripheral portion 13 of the back cover 6 so that the position 16 is located, the male screw portion 14 of the back cover 6 is screwed into the female screw portion 11 of the watch case 1 in this state, and tightened. Since the flange 15 of the cushioning member 8 is pressed and fixed to the first step portion 10 by the outer peripheral portion 13 of the back cover 6, the flange 15 of the cushioning member 8 is uniformly pressed by the outer peripheral portion 13 of the back cover 6. In addition to being able to be fixed, the flange portion 15 of the buffer member 8 is located above the outer peripheral portion 13 of the back cover 6, and the extending portion 16 of the buffer member 8 is positioned obliquely toward the lower side of the outer peripheral portion 13. The shock absorbing member 8 is hard to come off because it is attached in a state where it is set.
[0011]
Therefore, in this wristwatch, since the extension 16 of the cushioning member 8 projects obliquely below the outer peripheral portion 13 of the back cover 6, the back surface of the back cover 6 is floated by the extension 16 of the cushioning member 8. As a result, it is possible to prevent an impact from being directly applied to the back surface of the back cover 6, so that an external impact can be buffered and the timepiece module 4 in the watch case 1 can be well protected.
In this wristwatch, the buffer member 8 is a separate member from the watch case 1 and the watch band (not shown). For example, a metal-like material can be obtained.
[0012]
Next, a second embodiment of the wristwatch of the present invention will be described with reference to FIGS. The same parts as those of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.
This wristwatch has substantially the same structure as that of the first embodiment except that a waterproof packing portion 25 is formed integrally with a cushioning member 8. That is, as in the first embodiment, the cushioning member 8 is made of an elastic material, the flange portion 15 and the extending portion 16 are integrally formed in a ring shape, and as shown in FIGS. The waterproof packing part 25 is formed integrally with the flange part 15 via a connecting part 26. In this case, on the lower surface of the watch case 1 located between the step portion 10 and the female screw portion 11 of the watch case 1, as shown in FIG. It is formed from the center of the lower surface to the step portion 10.
[0013]
In such a wristwatch, as in the first embodiment, the male screw portion 14 of the back cover 6 is screwed into the female screw portion 11 of the watch case 1 in a state where the cushioning member 8 is arranged on the outer peripheral portion 13 of the back cover 6. When tightened, the flange portion 15 of the cushioning member 8 is pressed against the step portion 10 of the watch case 1 by the outer peripheral portion 13 of the back cover 6, and at the same time, the waterproof packing portion 25 is pressed and fixed by the outer peripheral portion 13. Therefore, in addition to the same operation and effect as the first embodiment, in particular, since the cushioning member 8 and the waterproof packing part 25 can be attached at one time, the assembling workability is good, and the waterproof packing part 25 is attached to the cushioning member 8. Are formed integrally, the number of parts is small, and the management of parts becomes easy.
[0014]
In the first and second embodiments, the structure in which the female screw portion 11 is provided on the inner wall surface of the watch case 1, the male screw portion 14 is provided on the back cover 6, and the male screw portion 14 is screwed to the female screw portion 11 is described. However, the present invention is not limited to this. A fitting portion is provided on the inner wall surface of the watch case 1, a fitting portion for fitting the fitting portion to the back cover 6 is provided, and the fitting portion of the back cover 6 is fitted to the watch case. It may be a structure that is inserted into the joint and fitted.
[0015]
【The invention's effect】
As described above, according to the present invention, by fitting the fitting portion of the back cover to the fitting portion of the watch case, the flange portion of the cushioning member arranged at the step portion of the watch case is fitted to the back cover. The outer peripheral part presses and fixes the step part of the watch case, so the outer peripheral part of the back cover can fix the flange of the cushioning member with a uniform force and hardly come off, and the cushioning member can be attached to the watch case or watch band. Since it is a separate member, the wristwatch case and the watch band are not restricted by the material as in the conventional case, and the wristwatch case and the watch band can be formed of metal, so that a metal-like product can be obtained. become.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view showing a main part of a wristwatch according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view of a main part of the wristwatch of FIG. 1;
FIG. 3 is an enlarged sectional view of a main part showing a second embodiment of the wristwatch of the present invention.
4 is a perspective view of the cushioning member of FIG.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 watch case 6 back cover 8 cushioning member 10 step portion 11 internal thread portion 13 outer peripheral portion of back cover 14 external thread portion 15 flange portion 16 extension portion 25 waterproof packing portion

Claims (3)

裏面側の外周面に段差部が形成されているとともに、裏面側の内壁面に嵌合部が形成された腕時計ケースと、
前記腕時計ケースの裏面に外周部が前記段差部側に突出して配置されるとともに、前記嵌合部に嵌着する嵌着部が形成された裏蓋と、
前記腕時計ケースの段差部に配置されて前記裏蓋の外周部によって押し付けられる鍔部が形成されているとともに、前記鍔部から前記裏蓋の外周部の裏面より延出する延出部が形成された弾性材料からなる緩衝部材と、
を備えたことを特徴とする腕時計。A watch case in which a step portion is formed on the outer peripheral surface on the back side and a fitting portion is formed on the inner wall surface on the back side,
An outer peripheral portion is arranged on the back surface of the watch case so as to protrude toward the step portion side, and a back cover formed with a fitting portion to be fitted to the fitting portion,
A flange portion is formed on the step portion of the watch case and pressed by the outer peripheral portion of the back cover, and an extending portion extending from the flange portion to the rear surface of the outer peripheral portion of the back cover is formed. A cushioning member made of an elastic material,
A wristwatch comprising: 前記腕時計ケースの嵌合部は雌ねじ部であり、前記裏蓋の嵌着部は前記雌ねじ部に螺合する雄ねじ部であることを特徴とする請求項１記載の腕時計。The wristwatch according to claim 1, wherein the fitting portion of the watch case is a female screw portion, and the fitting portion of the back cover is a male screw portion screwed into the female screw portion. 前記緩衝部材には、前記腕時計ケースと前記裏蓋との間に介在される防水パッキンが一体に形成されていることを特徴とする請求項１または２記載の腕時計。The wristwatch according to claim 1 or 2, wherein a waterproof packing interposed between the watch case and the back cover is integrally formed with the buffer member.

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