JPH10261336A - Waterproof structure of rubber switch - Google Patents
Waterproof structure of rubber switchInfo
- Publication number
- JPH10261336A JPH10261336A JP9084471A JP8447197A JPH10261336A JP H10261336 A JPH10261336 A JP H10261336A JP 9084471 A JP9084471 A JP 9084471A JP 8447197 A JP8447197 A JP 8447197A JP H10261336 A JPH10261336 A JP H10261336A
- Authority
- JP
- Japan
- Prior art keywords
- rib
- rubber body
- cylindrical
- rubber
- key
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/024—Transmission element
- H01H2221/026—Guiding or lubricating nylon
Landscapes
- Push-Button Switches (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はたとえばｐＨ計等に
付属して設けられるラバースイッチの防水構造の技術分
野に属する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a waterproof structure of a rubber switch provided for, for example, a pH meter.
【０００２】[0002]
【従来の技術】ｐＨ計等に設けられるラバースイッチの
防水構造としては、従来、例えば図６に示されるような
ものが公知である。この場合、ケース体ａに形成したキ
ー孔ｂの周縁にはリング状のガイドリブｃを立設し、そ
のキー孔ｂにラバー体ｄのキー部分ｅを遊嵌させる一
方、ケース体ａのガイドリブｃの外側に、リング状の外
リブｆを立設し、その外リブｆの先端をラバー体ｄの表
側シート面に強く押し当てて防水性を確保していた。な
お、ｇはシャーシ、ｈはプリント基板、ｉはキー部分ｄ
の下端に被着形成された接点である。2. Description of the Related Art As a waterproof structure of a rubber switch provided in a pH meter or the like, a structure as shown in FIG. 6 is conventionally known. In this case, a ring-shaped guide rib c is erected on the periphery of the key hole b formed in the case body a, and the key portion e of the rubber body d is loosely fitted in the key hole b, while the guide rib c of the case body a is provided. A ring-shaped outer rib f is erected on the outside of the rubber member d, and the tip of the outer rib f is strongly pressed against the front sheet surface of the rubber body d to ensure waterproofness. In addition, g is a chassis, h is a printed circuit board, i is a key part d.
Are formed at the lower end of the contact.
【０００３】[0003]
【発明が解決しようとする課題】上述した方式では、ラ
バー体ｄの表側シート面を外リブｆによって均等に押し
つぶすことにより、シール性を確保するので、そのつぶ
し代を充分に確保するために、そのラバー体ｄをケース
体ａに対して強く押し付ける必要があり、シャーシｇを
高剛性に形成しなければならなかった。特に、水圧が作
用する場合には、シャーシｇを含めてラバースイッチ全
体を高剛性に形成しなければならず、コスト高となって
いた。In the above-mentioned system, the sealing property is ensured by uniformly crushing the front side sheet surface of the rubber body d with the outer rib f. In order to sufficiently secure the crushing allowance, It was necessary to strongly press the rubber body d against the case body a, and the chassis g had to be formed with high rigidity. In particular, when water pressure acts, the entire rubber switch including the chassis g must be formed with high rigidity, which has increased the cost.
【０００４】また、そのケース体ａのガイドリブｃと外
リブｆとの間に、比較的大きなリング状の空間ｊが形成
されるため、キー孔ｂから侵入した水が、その空間ｊに
溜まり、なかなか抜けないことがあった。Further, since a relatively large ring-shaped space j is formed between the guide rib c and the outer rib f of the case body a, water entering from the key hole b accumulates in the space j, There were things that I couldn't get through easily.
【０００５】本発明はこのような実情に鑑みてなされ、
シャーシをなくすと共に、水溜まりが発生する空間をで
きるだけ少なくしたラバースイッチの防水構造を提供す
る。The present invention has been made in view of such circumstances,
A waterproof structure for a rubber switch in which a chassis is eliminated and a space in which a puddle occurs is minimized.
【０００６】[0006]
【課題を解決するための手段】本発明は、上述の課題を
解決するための手段を以下のように構成している。請求
項１に記載の発明では、ラバー体の表側シート面に配列
した押込み操作が可能なキー部分の外側に、そのキー部
分よりも径大な円筒状リブを突設形成する一方、ケース
体には、前記キー部分を遊嵌させるための円筒状のガイ
ドリブによって囲まれるキー孔を開設し、前記ラバー体
のキー部分を前記ケース体のキー孔に遊嵌させると共
に、前記ガイドリブを前記ラバー体の円筒状リブに水密
状態に密嵌させ、かつ、前記ラバー体の裏側シート面に
プリント配線基板を被着させてなることを特徴としてい
る。According to the present invention, means for solving the above-mentioned problems are constituted as follows. According to the first aspect of the present invention, a cylindrical rib having a diameter larger than that of the key portion is formed so as to protrude outside a key portion which can be pushed and arranged on the front side sheet surface of the rubber body, while being formed on the case body. Open a key hole surrounded by a cylindrical guide rib for loosely fitting the key portion, loosely fit the key portion of the rubber body into the key hole of the case body, and connect the guide rib to the rubber body. It is characterized in that the printed circuit board is tightly fitted to the cylindrical rib in a water-tight manner, and a printed wiring board is attached to the back sheet surface of the rubber body.
【０００７】ケース体に形成されたガイドリブをラバー
体の円筒状のリブに対して水密状態に密嵌させることに
より、そのガイドリブと円筒状リブとの間にシール面が
キー孔を取り囲むようにリング状に形成され、キー孔か
ら侵入した水がそのシール面で阻止され、内部への水の
侵入が防止される。また、キー孔からシール面に至るま
での空間が小さくなるので水の溜まりが少なくなる。The guide ribs formed on the case body are fitted tightly in a watertight manner with respect to the cylindrical ribs of the rubber body, so that a seal surface surrounds the key hole between the guide ribs and the cylindrical ribs. The sealing surface prevents water from entering through the key hole, thereby preventing water from entering the inside. Further, since the space from the key hole to the sealing surface is reduced, the accumulation of water is reduced.
【０００８】請求項２に記載の発明では、ラバー体の表
側シート面に配列した押込み操作が可能なキー部分の外
周に、そのキー部分よりも径大な円筒状リブを突設形成
する一方、ケース体には、前記キー部分を遊嵌させるた
めの円筒状のガイドリブによって囲まれるキー孔を開設
し、かつ、そのガイドリブの外側に、そのガイドリブよ
りも径大な円筒状の外側リブを立設し、前記ラバー体の
キー部分を前記ケース体のキー孔に遊嵌させると共に、
前記ガイドリブと外側リブとの間に前記ラバー体の円筒
状リブを水密状態に密嵌させ、かつ、前記ラバー体の裏
側シート面にプリント配線基板を被着させてなることを
特徴としている。According to the second aspect of the present invention, a cylindrical rib having a diameter larger than that of the key portion is formed on the outer periphery of the key portion which can be pushed and arranged on the front sheet surface of the rubber body. The case body has a key hole surrounded by a cylindrical guide rib for loosely fitting the key portion, and a cylindrical outer rib having a diameter larger than that of the guide rib is provided outside the guide rib. And the key portion of the rubber body is loosely fitted into the key hole of the case body,
It is characterized in that a cylindrical rib of the rubber body is tightly fitted in a watertight state between the guide rib and the outer rib, and a printed wiring board is adhered to a back sheet surface of the rubber body.
【０００９】ケース体に形成されたガイドリブと外側リ
ブとの間にラバー体の円筒状リブに水密状態に密嵌させ
ることにより、その円筒状リブとガイドリブおよび外側
リブとの間に二重の円筒状のシール面が形成され、キー
孔から侵入した水がその二重のシール面で阻止されるた
め、内部への水の侵入をより効果的に防ぐことができ
る。The cylindrical rib of the rubber body is tightly fitted in a watertight manner between the guide rib and the outer rib formed on the case body, so that a double cylinder is provided between the cylindrical rib, the guide rib and the outer rib. Since a double-faced sealing surface is formed and water entering through the key hole is blocked by the double sealing surface, it is possible to more effectively prevent water from entering the inside.
【００１０】[0010]
【発明の実施の形態】以下に本発明のラバースイッチの
防水構造の実施形態を図面に基づいて詳細に説明する。
図１(A) はラバースイッチの要部構成を示す断面図、
(B) は組付対応図で、符号１は例えば硬質の合成樹脂材
等を型成形してなるケース体、２はキー孔、３はそのキ
ー孔の周縁に立設された円筒状のガイドリブ、４はその
ガイドリブ３の外側に立設された円筒状の外リブ、５は
弾力性に富んだ合成樹脂製ラバーを型成形してなるラバ
ー体、６はそのラバー体５の表側シート面に突設形成さ
れた押込み操作が可能なキー部分、７はそのキー部分６
の外側に突設形成された円筒状リブ、８はそのラバー体
５の裏側シート面に被着されたプリント配線基板であ
り、上述のキー部分６の下方は円形状にくり抜かれると
共に、その基部の周縁部が薄肉状部分９でラバー体５の
表面に連らなっており、そのキー部分６の底面には導電
性薄膜よりなる接点１０が被着され、プリント配線基板
８の接点１１と対応し、キー部分６の押込み操作によっ
て両接点１０，１１が導通するようになっている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a waterproof structure of a rubber switch according to an embodiment of the present invention.
FIG. 1A is a cross-sectional view showing a main part configuration of a rubber switch.
(B) is a diagram for assembling, reference numeral 1 is a case body formed by molding a hard synthetic resin material or the like, for example, 2 is a key hole, 3 is a cylindrical guide rib erected on the periphery of the key hole. Reference numeral 4 denotes a cylindrical outer rib erected outside the guide rib 3, 5 denotes a rubber body formed by molding a synthetic resin rubber having high elasticity, and 6 denotes a rubber body 5 on the front sheet surface of the rubber body 5. A protrudingly formed key portion which can be pushed, 7 is its key portion 6
Is a printed wiring board attached to the back sheet surface of the rubber body 5, and the lower part of the key portion 6 is hollowed out in a circular shape, A peripheral portion of the base is connected to the surface of the rubber body 5 by a thin portion 9, and a contact 10 made of a conductive thin film is attached to the bottom surface of the key portion 6. Correspondingly, the contacts 10 and 11 are made conductive by pressing the key portion 6.
【００１１】上述のラバー体５の円筒状リブ７は、ケー
ス体１のガイドリブ３と外リブ４との間に形成されるリ
ング状の間隙に密に嵌合し、ケース体１との間に内外二
重のシール面１２，１３が形成され、キー孔２から侵入
する水を効果的に阻止することができると共に、従来の
ようなシャーシを不要としている。The above-mentioned cylindrical rib 7 of the rubber body 5 closely fits into a ring-shaped gap formed between the guide rib 3 and the outer rib 4 of the case body 1, and is formed between the rubber body 5 and the case body 1. The inner and outer double sealing surfaces 12 and 13 are formed to effectively prevent water entering from the key hole 2 and eliminate the need for a conventional chassis.
【００１２】より詳しくは、上述の内側のシール面１２
は、ガイドリブ３の外周面との円筒状リブ７の内周面と
の間にリング状に形成され、また、外側のシール面１３
は、外リブ４の内周面と円筒状リブ７の外周面との間に
リング状に形成され、そのシール面１２，１３によっ
て、水の侵入を許容するキー部分６とキー孔２との間の
わずかな間隙が二重にシールされることとなり、従っ
て、たとえば水圧が作用する場合でも完全な防水効果を
得ることができる。また、キー孔２からシール面１２ま
での空間が小さくなるので、水の溜まりが少なくなる。More specifically, the inner sealing surface 12 described above is used.
Are formed in a ring shape between the outer peripheral surface of the guide rib 3 and the inner peripheral surface of the cylindrical rib 7, and the outer sealing surface 13
Is formed in a ring shape between the inner peripheral surface of the outer rib 4 and the outer peripheral surface of the cylindrical rib 7. The slight gap between them is double sealed, so that a perfect waterproofing effect can be obtained, for example, even in the event of hydraulic pressure. Further, since the space from the key hole 2 to the sealing surface 12 is reduced, the accumulation of water is reduced.
【００１３】一方、ラバー体５の円筒状リブ７をケース
体１のガイドリブ３と外リブ４との間に密嵌させること
によって、水密状態が形成されることから、従来のよう
に、ラバー体５の裏面に高剛性なシャーシを設ける必要
がなくなり、また、その水密嵌合構造が各キー部分６
に、それぞれ独立に形成されるため、図２に示すよう
に、ラバー体５に多数のキー部分６が互いに隣接して配
置される場合においても、ラバー体５をケース体１に安
定強固に一体化させることができ、シャーシのような補
強部材は不要となる（図３参照）。そして、そのキー部
分６の径が比較的大であり、かつラバー体５の周縁部に
配置される場合は、例えば図４に示すように、ケース体
１の外リブ４を、ラバー体５の周縁部に形成した外フラ
ンジ１４と円筒状リブ７との間に密に嵌合させることに
より、そのラバー体５の周縁部をケース体１に対して安
定強固に固定することができる。On the other hand, since the cylindrical rib 7 of the rubber body 5 is closely fitted between the guide rib 3 and the outer rib 4 of the case body 1, a watertight state is formed. There is no need to provide a highly rigid chassis on the back surface of the
2, the rubber body 5 is stably and firmly integrated with the case body 1 even when a large number of key portions 6 are arranged adjacent to each other as shown in FIG. And a reinforcing member such as a chassis is not required (see FIG. 3). When the diameter of the key portion 6 is relatively large and the key portion 6 is disposed on the peripheral edge of the rubber body 5, for example, as shown in FIG. By tightly fitting between the outer flange 14 formed on the peripheral edge and the cylindrical rib 7, the peripheral edge of the rubber body 5 can be fixed stably and firmly to the case body 1.
【００１４】以上のように、多数の径の異なるキー部分
６，６１…を配列する場合においても、シャーシ等の補
強部材を要することなく、防水性がよく水の溜まりが少
なく、軽量かつ安価なラバースイッチを提供することが
できる。なお、図２中、符号１５は表示盤、１６はコー
ド接続プラグである。As described above, even when a large number of key portions 6, 61... Having different diameters are arranged, no need for a reinforcing member such as a chassis is required, the waterproofness is good, the pool of water is small, the weight is low and the cost is low. A rubber switch can be provided. In FIG. 2, reference numeral 15 denotes a display panel, and reference numeral 16 denotes a cord connection plug.
【００１５】図５は異なる実施形態を示し、この場合、
ケース体１のガイドリブ３の外周面と、ラバー体５の円
筒状リブ７の内周面との間にシール面１２を形成するの
みとして構成を簡略化し、より安価に提供できるように
している。水圧がかからない場合には、このような簡易
な構成によっても、充分な防水性を得ることができる。FIG. 5 shows a different embodiment, in which
The configuration is simplified by only forming the sealing surface 12 between the outer peripheral surface of the guide rib 3 of the case body 1 and the inner peripheral surface of the cylindrical rib 7 of the rubber body 5, so that the cost can be reduced. When no water pressure is applied, sufficient waterproofness can be obtained even with such a simple configuration.
【００１６】[0016]
【発明の効果】以上説明したように、請求項１に記載の
発明では、ラバー体のキー部分の外側に突設形成した円
筒状リブに、ケース体のキー孔を囲むように突設形成し
たガイドリブを水密状態に密嵌させるので、そのガイド
リブの外周面と円筒状リブの内周面との間にリング状の
シール面が、キー孔を取り囲むようにリング状に形成さ
れ、良好な防水性を得られ、かつ、水の溜まりが少なく
なる。As described above, according to the first aspect of the present invention, the cylindrical rib protruding outside the key portion of the rubber body is formed so as to surround the key hole of the case body. Since the guide ribs are tightly fitted in a watertight state, a ring-shaped sealing surface is formed between the outer peripheral surface of the guide rib and the inner peripheral surface of the cylindrical rib in a ring shape so as to surround the key hole. And the pool of water is reduced.
【００１７】また、その円筒状リブとガイドリブとの嵌
合によってラバー体がケース体に安定強固に一体化され
てシールが形成されるため、シャーシを要することな
く、軽量とコストの低減化を図ることができる。Further, since the rubber body is stably and firmly integrated with the case body by the fitting of the cylindrical rib and the guide rib to form a seal, the weight is reduced and the cost is reduced without the need for a chassis. be able to.
【００１８】請求項２に記載の発明では、ケース体に形
成したガイドリブと外側リブとの間にラバー体の円筒状
リブを水密状態に密嵌されるので、その円筒状リブと、
ガイドリブおよび外側リブとの間に円筒状のシール面が
二重に形成され、より一層防水性が向上する。According to the second aspect of the present invention, since the cylindrical rib of the rubber body is tightly fitted in a watertight state between the guide rib and the outer rib formed on the case body,
The cylindrical sealing surface is formed double between the guide rib and the outer rib, and the waterproofness is further improved.
【００１９】また、その円筒状リブと、ガイドリブおよ
び外側リブとの嵌合により、ラバー体がケース体に安定
強固に一体化されて二重のシール面が形成されるため、
シャーシを要することなく、軽量化とコストの低減化を
図ることができる。Further, by fitting the cylindrical rib with the guide rib and the outer rib, the rubber body is stably and firmly integrated with the case body to form a double sealing surface.
The weight and cost can be reduced without the need for a chassis.
【図１】（Ａ）は本発明のラバースイッチの一実施形態
の要部構成を示す断面図、（Ｂ）はその組付対応図であ
る。FIG. 1A is a cross-sectional view illustrating a configuration of a main part of an embodiment of a rubber switch according to the present invention, and FIG.
【図２】同ラバー体の斜視図である。FIG. 2 is a perspective view of the rubber body.
【図３】同図２のＸ−Ｘ線矢視断面図である。FIG. 3 is a sectional view taken along line XX of FIG. 2;
【図４】同図２のＹ−Ｙ線矢視断面図である。FIG. 4 is a sectional view taken on line YY of FIG. 2;
【図５】ラバースイッチの異なる実施形態の要部構成を
示す断面図である。FIG. 5 is a cross-sectional view illustrating a configuration of a main part of a rubber switch according to another embodiment.
【図６】従来のラバースイッチの要部構成を示す断面図
である。FIG. 6 is a cross-sectional view showing a main part configuration of a conventional rubber switch.
１…ケース体、２…キー孔、３…ガイドリブ、４…外リ
ブ、５…ラバー体、６…キー部分、７…円筒状リブ、８
…プリント配線基板。DESCRIPTION OF SYMBOLS 1 ... Case body, 2 ... Key hole, 3 ... Guide rib, 4 ... Outer rib, 5 ... Rubber body, 6 ... Key part, 7 ... Cylindrical rib, 8
... Printed circuit boards.
Claims (2)
み操作が可能なキー部分の外側に、そのキー部分よりも
径大な円筒状リブを突設形成する一方、ケース体には、
前記キー部分を遊嵌させるための円筒状のガイドリブに
よって囲まれるキー孔を開設し、前記ラバー体のキー部
分を前記ケース体のキー孔に遊嵌させると共に、前記ガ
イドリブを前記ラバー体の円筒状リブに水密状態に密嵌
させ、かつ、前記ラバー体の裏側シート面にプリント配
線基板を被着させてなることを特徴とするラバースイッ
チの防水構造。1. A cylindrical rib having a diameter larger than that of a key portion protrudingly formed outside a key portion which can be pushed and arranged on a front side sheet surface of a rubber body.
A key hole surrounded by a cylindrical guide rib for loosely fitting the key portion is opened, and the key portion of the rubber body is loosely fitted to the key hole of the case body, and the guide rib is formed in a cylindrical shape of the rubber body. A waterproof structure for a rubber switch, wherein a waterproof structure is formed by tightly fitting the ribs in a water-tight manner and attaching a printed wiring board to a back sheet surface of the rubber body.
み操作が可能なキー部分の外周に、そのキー部分よりも
径大な円筒状リブを突設形成する一方、ケース体には、
前記キー部分を遊嵌させるための円筒状のガイドリブに
よって囲まれるキー孔を開設し、かつ、そのガイドリブ
の外側に、そのガイドリブよりも径大な円筒状の外側リ
ブを立設し、前記ラバー体のキー部分を前記ケース体の
キー孔に遊嵌させると共に、前記ガイドリブと外側リブ
との間に前記ラバー体の円筒状リブを水密状態に密嵌さ
せ、かつ、前記ラバー体の裏側シート面にプリント配線
基板を被着させてなることを特徴とするラバースイッチ
の防水構造。2. A cylindrical rib having a diameter larger than that of the key portion is formed on the outer periphery of a key portion which can be pushed and arranged on the front sheet surface of the rubber body.
A key hole surrounded by a cylindrical guide rib for loosely fitting the key portion, and a cylindrical outer rib having a diameter larger than that of the guide rib is provided outside the guide rib; Key part of the case body is loosely fitted in the key hole of the case body, and the cylindrical rib of the rubber body is tightly fitted in a watertight state between the guide rib and the outer rib, and is attached to the back sheet surface of the rubber body. A waterproof structure for a rubber switch, which is formed by attaching a printed wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9084471A JPH10261336A (en) | 1997-03-17 | 1997-03-17 | Waterproof structure of rubber switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9084471A JPH10261336A (en) | 1997-03-17 | 1997-03-17 | Waterproof structure of rubber switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10261336A true JPH10261336A (en) | 1998-09-29 |
Family
ID=13831563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9084471A Pending JPH10261336A (en) | 1997-03-17 | 1997-03-17 | Waterproof structure of rubber switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10261336A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059368A (en) * | 2001-08-22 | 2003-02-28 | Mitsumi Electric Co Ltd | Key switch |
| JP2003178641A (en) * | 2001-12-07 | 2003-06-27 | Yazaki Corp | Push-button switch device |
| JP2007165053A (en) * | 2005-12-12 | 2007-06-28 | Nec Viewtechnology Ltd | Push button structure and electronic equipment provided therewith |
| JP2010231975A (en) * | 2009-03-26 | 2010-10-14 | Kyocera Corp | Switch, electronic apparatus, and communication device |
| CN101964265A (en) * | 2009-07-23 | 2011-02-02 | 纬创资通股份有限公司 | Press key mechanism with water-proof function and electronic device |
| JP2016062726A (en) * | 2014-09-17 | 2016-04-25 | アイシン精機株式会社 | Switch device |
-
1997
- 1997-03-17 JP JP9084471A patent/JPH10261336A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059368A (en) * | 2001-08-22 | 2003-02-28 | Mitsumi Electric Co Ltd | Key switch |
| JP2003178641A (en) * | 2001-12-07 | 2003-06-27 | Yazaki Corp | Push-button switch device |
| JP2007165053A (en) * | 2005-12-12 | 2007-06-28 | Nec Viewtechnology Ltd | Push button structure and electronic equipment provided therewith |
| JP4624251B2 (en) * | 2005-12-12 | 2011-02-02 | Ｎｅｃディスプレイソリューションズ株式会社 | Push button structure and electronic device having the same |
| JP2010231975A (en) * | 2009-03-26 | 2010-10-14 | Kyocera Corp | Switch, electronic apparatus, and communication device |
| CN101964265A (en) * | 2009-07-23 | 2011-02-02 | 纬创资通股份有限公司 | Press key mechanism with water-proof function and electronic device |
| JP2016062726A (en) * | 2014-09-17 | 2016-04-25 | アイシン精機株式会社 | Switch device |
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