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JP2008249139A - Waterproof structure of electronic equipment - Google Patents

Waterproof structure of electronic equipment Download PDF

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Publication number
JP2008249139A
JP2008249139A JP2008043307A JP2008043307A JP2008249139A JP 2008249139 A JP2008249139 A JP 2008249139A JP 2008043307 A JP2008043307 A JP 2008043307A JP 2008043307 A JP2008043307 A JP 2008043307A JP 2008249139 A JP2008249139 A JP 2008249139A
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Japan
Prior art keywords
gasket
holding groove
case member
shoulder
groove
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JP2008043307A
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Japanese (ja)
Inventor
Takahiro Hayashi
隆浩 林
Takashi Sasaki
崇 佐々木
Keiichi Miyajima
慶一 宮嶋
Takao Shinoda
孝夫 篠田
Masaru Sugie
優 杉江
Shingo Yamaguchi
慎吾 山口
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Nok Corp
Fujitsu Ltd
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Nok Corp
Fujitsu Ltd
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Priority to JP2008043307A priority Critical patent/JP2008249139A/en
Publication of JP2008249139A publication Critical patent/JP2008249139A/en
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  • Casings For Electric Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide waterproof structure of electronic equipment having improved reliability by hardly causing the fall-down of a gasket in a gasket holding groove due to outer force. <P>SOLUTION: In the waterproof structure, the gasket 3 of a rubber elastic material is held in the gasket holding groove 11 provided in the outer periphery of one of a first case member and a second case member constituting the shell case of electronic equipment. The gasket 3 has a main seal portion 3 to be put in close contact with the other one of the first case member and the second case member, a plurality of seated seal portions 32 to be put in close constat with a bottom face 11a of the gasket holding groove 11, and a wholly continuous shoulder portion 33 protrudingly formed on a side face portion between the main seal portion 31 and the seated seal portion 32 to approach a groove shoulder 11b of the gasket holding groove 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、小型携帯端末機器などの電子機器の防水構造に関する。   The present invention relates to a waterproof structure for electronic devices such as small portable terminal devices.

近年、小型携帯端末機器である携帯電話機は、通話機能や、ウェブメールの送受信、インターネットなどの通信機能ばかりでなく、音楽や画像の録音・再生機能、ゲーム機能、ＧＰＳによるナビゲーション機能、電子マネー機能など、多機能化が急速に進んでいる。したがって、しっかり防水されていないと、過って水中に落としたり、降雨などで濡れたりした時に、水や水蒸気の侵入によって故障し、重大な損害を受けるおそれがある。   In recent years, mobile phones, which are small mobile terminal devices, have not only a call function, web mail transmission / reception, and communication functions such as the Internet, but also a music / image recording / playback function, a game function, a GPS navigation function, and an electronic money function. Multi-functionalization is progressing rapidly. Therefore, if it is not waterproofed properly, it may break down due to intrusion of water or water vapor and cause serious damage when it is dropped into water or wet by rain.

図５は、従来技術による防水構造を示す断面図、図６は、従来技術による防水構造におけるガスケットが外力により倒れた状態を示す断面図である。   FIG. 5 is a cross-sectional view showing a waterproof structure according to the prior art, and FIG. 6 is a cross-sectional view showing a state in which the gasket in the waterproof structure according to the prior art falls down due to external force.

すなわち従来技術による防水構造においては、図５に示されるように、外殻ケース１００を構成する第一ケース部材１０１と第二ケース部材１０２のうちの一方（図示の例では第一ケース部材１０１）に、その外周に沿ってガスケット保持溝１０１ａを設け、このガスケット保持溝１０１ａに保持したガスケット１０３が、外殻ケース１００の組立状態において、第一ケース部材１０１と第二ケース部材１０２間で適当に圧縮されることにより、外部ダストや水などに対する密封機能を発揮するものである。ガスケット１０３は、ゴム状弾性材料からなるものであって、第二ケース部材１０２に密接されるメインシール部１０３ａと、ガスケット保持溝１０１ａの底面に密接状態に着座する複数の着座シール部１０３ｂとを有する。   That is, in the waterproof structure according to the prior art, as shown in FIG. 5, one of the first case member 101 and the second case member 102 constituting the outer shell case 100 (the first case member 101 in the illustrated example). In addition, a gasket holding groove 101a is provided along the outer periphery thereof, and the gasket 103 held in the gasket holding groove 101a is appropriately fitted between the first case member 101 and the second case member 102 in the assembled state of the outer shell case 100. By being compressed, it exhibits a sealing function against external dust and water. The gasket 103 is made of a rubber-like elastic material, and includes a main seal portion 103a that is in close contact with the second case member 102 and a plurality of seating seal portions 103b that are in close contact with the bottom surface of the gasket holding groove 101a. Have.

なお、図５のような異形断面のガスケットを用いて通信機器等のケース分割部を防水する技術としては、例えば下記の特許文献のようなものが知られている。
実開昭５８−１８４８８０号公報 In addition, as a technique for waterproofing a case division part of a communication device or the like using a gasket having a modified cross section as shown in FIG. 5, for example, the following patent document is known.
Japanese Utility Model Publication No. 58-184880

しかし、従来の防水用ガスケットによれば、外殻ケース１００の組立過程などにおいて、図６に示されるように、外力Ｆによってガスケット保持溝１０１ａ内でのガスケット１０３の倒れが発生すると、密封性が損なわれ、僅かな水圧でも外部からの水の侵入を生じてしまうおそれがある。   However, according to the conventional waterproof gasket, when the gasket 103 falls down in the gasket holding groove 101a due to the external force F, as shown in FIG. There is a risk that water will enter from the outside even at a slight water pressure.

また、このようなガスケット１０３の倒れを防止するには、ガスケット１０３をガスケット保持溝１０１ａに圧入する構造とすることが考えられるが、携帯電話機のような小型携帯端末機器に用いられるガスケット１０３は、その幅Ｗも小さなものであるため、ガスケット１０３をガスケット保持溝１０１ａへ圧入する構造とした場合は、組立の作業効率が著しく悪化し、しかもガスケット１０３の損傷が起こりやすくなる問題がある。   Further, in order to prevent such a fall of the gasket 103, it is conceivable to adopt a structure in which the gasket 103 is press-fitted into the gasket holding groove 101a, but the gasket 103 used in a small portable terminal device such as a mobile phone is Since the width W is small, when the gasket 103 is press-fitted into the gasket holding groove 101a, there is a problem that the assembling work efficiency is remarkably deteriorated and the gasket 103 is easily damaged.

本発明は、以上のような点に鑑みてなされたものであって、その技術的課題とするところは、外力によるガスケット保持溝内でのガスケットの倒れを生じにくくして、信頼性の高い電子機器の防水構造を提供することにある。   The present invention has been made in view of the above points, and the technical problem thereof is that it is difficult to cause the gasket to fall down in the gasket holding groove due to external force, and a highly reliable electron. The object is to provide a waterproof structure for the device.

上述した技術的課題を有効に解決するための手段として、本発明に係る電子機器の防水構造は、電子機器の外殻ケースを構成する第一ケース部材と第二ケース部材のうち一方の外周部にガスケット保持溝を周設し、ゴム状弾性材料からなるガスケットを、前記第一ケース部材と第二ケース部材のうち他方と、前記ガスケット保持溝の底面に密接させてなる防水構造において、前記ガスケットが、前記第一ケース部材と第二ケース部材のうち他方に密接されるメインシール部と、前記ガスケット保持溝の底面に密接される複数の着座シール部と、前記メインシール部と着座シール部との間の側面部に張り出し形成されて前記ガスケット保持溝の溝肩に近接される全周連続した肩部とを有するものである。   As means for effectively solving the technical problem described above, the waterproof structure for an electronic device according to the present invention is an outer peripheral portion of one of a first case member and a second case member that constitute an outer shell case of the electronic device. In the waterproof structure in which the gasket holding groove is provided around the gasket, and the gasket made of rubber-like elastic material is in close contact with the other of the first case member and the second case member and the bottom surface of the gasket holding groove. A main seal portion that is in close contact with the other of the first case member and the second case member, a plurality of seating seal portions that are in close contact with the bottom surface of the gasket holding groove, and the main seal portion and the seating seal portion. And a shoulder portion that is continuously formed on the side surface portion between and adjacent to the groove shoulder of the gasket holding groove.

そしてこの場合、ガスケットの着座シール部から肩部までの高さを、ガスケット保持溝の底面から溝肩までの高さに対して１００〜９２％とし、好ましくは１００〜９６％とする。   In this case, the height from the seating seal portion to the shoulder portion of the gasket is set to 100 to 92%, preferably 100 to 96%, with respect to the height from the bottom surface of the gasket holding groove to the groove shoulder.

上記構成によれば、外殻ケースの組立過程などにおいて、ガスケット保持溝に収容したガスケットに、倒れる方向の外力が作用しても、このガスケットは、メインシール部と着座シール部との間の側面部に張り出し形成された全周連続した肩部が、ガスケット保持溝の溝肩の内側面に接触することにより支持されるので、溝内でのガスケットの倒れが抑制され、メインシール部の所要のシール面圧が確保される。また、ガスケット保持溝にガスケットを圧入するものではないので、装着の容易性も確保される。   According to the above configuration, even when an external force in the direction of falling acts on the gasket accommodated in the gasket holding groove in the process of assembling the outer shell case, the gasket is provided on the side surface between the main seal portion and the seating seal portion. Since the shoulder part that is continuously formed over the entire circumference is supported by contacting the inner surface of the groove shoulder of the gasket holding groove, the fall of the gasket in the groove is suppressed, and the required main seal part is required. Seal surface pressure is secured. Further, since the gasket is not press-fitted into the gasket holding groove, the ease of mounting is ensured.

本発明に係る電子機器の防水構造によれば、外力によるガスケット保持溝内でのガスケットの倒れが生じにくくなるので、防水機能の信頼性を向上することができる。   According to the waterproof structure for an electronic device according to the present invention, the gasket is less likely to fall in the gasket holding groove due to an external force, so that the reliability of the waterproof function can be improved.

以下、本発明に係る電子機器の防水構造の好ましい実施の形態について、図面を参照しながら説明する。まず図１は、本発明に係る電子機器の防水構造の第一の形態を示す断面図である。この図１において、参照符号１は第一ケース部材、参照符号２は第二ケース部材で、外周部が互いに衝合した状態に組み立てられることによって、携帯電話機等の下部ユニットや上部ユニットの外殻ケースを構成するものである。   Hereinafter, preferred embodiments of a waterproof structure for an electronic device according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a first form of a waterproof structure for an electronic device according to the present invention. In FIG. 1, reference numeral 1 is a first case member, reference numeral 2 is a second case member, and the outer shells of a lower unit and an upper unit such as a mobile phone are assembled by being assembled in a state where the outer peripheral portions are in contact with each other. It constitutes a case.

第一ケース部材１における第二ケース部材２との対向面には、外周に沿ってガスケット保持溝１１が形成されており、このガスケット保持溝１１には、その底面１１ａと第二ケース部材２との間で適当に圧縮されることにより、外部ダストや水などに対する密封機能を発揮するガスケット３が保持されている。   A gasket holding groove 11 is formed along the outer periphery of the surface of the first case member 1 facing the second case member 2, and the gasket holding groove 11 has a bottom surface 11 a and a second case member 2. The gasket 3 that exhibits a sealing function against external dust, water, and the like is held by being appropriately compressed between the two.

ガスケット３は、ゴム状弾性材料で無端状に成形されたものであって、ガスケット保持溝１１の外側へ突出して第二ケース部材２に密接される断面山形のメインシール部３１と、その反対側を向き、ガスケット保持溝１１の底面１１ａに着座される内外周一対の断面円弧形の互いに平行な着座シール部３２と、前記メインシール部３１と着座シール部３２との間の両側面部に張り出し形成され、言い換えればメインシール部３１の裾部にそれぞれ全周連続して張り出し形成されてガスケット保持溝１１の溝肩１１ｂ，１１ｂに近接される一対の肩部３３とを有する。   The gasket 3 is endlessly formed of a rubber-like elastic material, and protrudes outside the gasket holding groove 11 to be in close contact with the second case member 2 and the opposite side thereof. And a pair of inner and outer peripheral seating seal portions 32 seated on the bottom surface 11a of the gasket holding groove 11 and parallel to each other, and projecting to both side surfaces between the main seal portion 31 and the seating seal portion 32 In other words, the main seal portion 31 has a pair of shoulder portions 33 that are continuously extended over the entire circumference of the bottom portion of the main seal portion 31 and are close to the groove shoulders 11 b and 11 b of the gasket holding groove 11.

ガスケット３の幅は、ガスケット保持溝１１に遊嵌可能な大きさであって、肩部３３は、着座シール部３２の側面と略同一平面をなし、かつ溝肩１１ｂと略同一の高さ、詳しくは、着座シール部３２から肩部３３までの高さが、ガスケット保持溝１１の底面１１ａから溝肩１１ｂまでの高さ（言い換えれば溝深さ）に対して１００〜９２％、さらに好ましくは１００〜９６％となっている。   The width of the gasket 3 is a size that can be loosely fitted in the gasket holding groove 11, and the shoulder portion 33 is substantially flush with the side surface of the seating seal portion 32, and substantially the same height as the groove shoulder 11 b, Specifically, the height from the seating seal portion 32 to the shoulder portion 33 is 100 to 92% with respect to the height from the bottom surface 11a of the gasket holding groove 11 to the groove shoulder 11b (in other words, the groove depth), more preferably 100-96%.

また、ガスケット３の断面積は、第一ケース部材１におけるガスケット保持溝１１の底面１１ａと第二ケース部材２との間で圧縮されたときの、前記ガスケット保持溝１１に対するガスケット３の充填率が１００％を越えない範囲で、両側面３４がガスケット保持溝１１における両内側面１１ｃに可及的に接近した状態となる大きさとすることが好ましい。   Further, the cross-sectional area of the gasket 3 is such that the filling rate of the gasket 3 with respect to the gasket holding groove 11 when compressed between the bottom surface 11a of the gasket holding groove 11 and the second case member 2 in the first case member 1. It is preferable that both side surfaces 34 have a size that is as close as possible to both inner side surfaces 11c of the gasket holding groove 11 within a range not exceeding 100%.

上述の構成によれば、外殻ケースの組立過程などにおいて、図２に示されるように、ガスケット保持溝１１内のガスケット３を倒す方向外力Ｆが作用すると、ガスケット３の一方の肩部３３が、ガスケット保持溝１１における一方の溝肩１１ｂの内側面１１ｃに接触することにより支持される。したがって、ガスケット保持溝１１の溝幅及びガスケット３の幅が、先に説明した図５及び図６に示されるガスケット保持溝１０１ａの溝幅及びガスケット１０３の幅と同一である場合、このガスケット１０３に比較して、図１及び図２に示される第一の形態に係るガスケット３のほうが、倒れが小さく抑制される。   According to the above-described configuration, when the external force F in the direction of depressing the gasket 3 in the gasket holding groove 11 is applied in the process of assembling the outer shell case, etc., as shown in FIG. The gasket holding groove 11 is supported by contacting the inner side surface 11c of one groove shoulder 11b. Therefore, when the groove width of the gasket holding groove 11 and the width of the gasket 3 are the same as the groove width of the gasket holding groove 101a and the width of the gasket 103 shown in FIGS. In comparison, the gasket 3 according to the first embodiment shown in FIG. 1 and FIG.

このため、ガスケット３の倒れに起因するメインシール部３１のシール面圧の低下が抑制され、所要の防水性が確保される。また、ガスケット保持溝１１に対するガスケット３の幅方向のサイズは、基本的に図５と同様であって、ガスケット３をガスケット保持溝１１に圧入するものではないので、装着の容易性も確保される。   For this reason, the fall of the seal surface pressure of the main seal part 31 resulting from the fall of the gasket 3 is suppressed, and required waterproofness is ensured. Further, the size of the gasket 3 in the width direction with respect to the gasket holding groove 11 is basically the same as that in FIG. 5, and the gasket 3 is not press-fitted into the gasket holding groove 11. .

なお、ガスケット３の肩部３３の高さをガスケット保持溝１１の底面１１ａから溝肩１１ｂまでの高さに対して１００％以下としたのは、肩部３３の高さが溝肩１１ｂよりも高いと、第一ケース部材１におけるガスケット保持溝１１の底面１１ａと第二ケース部材２との間でガスケット３が圧縮されたときに、肩部３３が第二ケース部材２と干渉するおそれがあるからであり、９２％以上、好ましくは９６％以上としたのは、肩部３３の高さが９２％より低いと、ガスケット３を倒す方向外力Ｆが作用したときに、ガスケット３の一方の肩部３３がガスケット保持溝１１における一方の溝肩１１ｂの内側面１１ｃに接触することによる倒れ防止効果が得られにくくなることが、実験により判明したからである。   The height of the shoulder portion 33 of the gasket 3 is set to 100% or less with respect to the height from the bottom surface 11a of the gasket holding groove 11 to the groove shoulder 11b because the height of the shoulder portion 33 is higher than that of the groove shoulder 11b. If the height is high, the shoulder 33 may interfere with the second case member 2 when the gasket 3 is compressed between the bottom surface 11a of the gasket holding groove 11 in the first case member 1 and the second case member 2. The reason is that when the height of the shoulder portion 33 is lower than 92%, when one of the shoulders of the gasket 3 is applied when the external force F in the direction of tilting the gasket 3 is applied. It is because it became clear by experiment that the fall prevention effect by the part 33 contacting the inner surface 11c of the one groove shoulder 11b in the gasket holding groove 11 becomes difficult to be obtained.

図３は、本発明に係る電子機器の防水構造の第二の形態を示す断面図、図４は、同じく第三の形態を示す断面図である。   FIG. 3 is a sectional view showing a second embodiment of the waterproof structure of the electronic device according to the present invention, and FIG. 4 is a sectional view showing the third embodiment.

これらの実施の形態も、上述の形態と同様の技術思想を有するものであって、このうち、図３に示される第二の形態は、ガスケット保持溝１１の外側へ突出して第二ケース部材２に密接される断面山形のメインシール部３１と、その反対側を向き、ガスケット保持溝１１の底面１１ａに着座される互いに平行な３本の断面円弧形の着座シール部３２とを有するガスケット３に、メインシール部３１と着座シール部３２との間の両側面部に位置する肩部３３を全周連続して張り出し形成したものである。   These embodiments also have the same technical idea as the above-described embodiment, and among these, the second embodiment shown in FIG. 3 protrudes to the outside of the gasket holding groove 11 and the second case member 2. A gasket 3 having a main seal portion 31 having a mountain-shaped cross section that is in close contact with each other and three parallel arc-shaped seating seal portions 32 that face the opposite side and are seated on the bottom surface 11a of the gasket holding groove 11. Further, shoulder portions 33 located on both side surface portions between the main seal portion 31 and the seating seal portion 32 are formed to continuously extend over the entire circumference.

また、図４に示される第三の形態は、ガスケット保持溝１１の外側へ突出して第二ケース部材２に密接される断面円弧形の互いに平行な内外周一対のメインシール部３１と、その反対側を向き、ガスケット保持溝１１の底面１１ａに着座される断面円弧形の互いに平行な３本の着座シール部３２とを有するガスケット３に、メインシール部３１と着座シール部３２との間の両側面部に位置する肩部３３を全周連続して張り出し形成したものである。   Further, the third embodiment shown in FIG. 4 includes a pair of main seal portions 31 that are parallel to each other and have arcuate cross sections that protrude outward from the gasket holding groove 11 and are in close contact with the second case member 2, Between the main seal portion 31 and the seating seal portion 32, the gasket 3 having three seating seal portions 32 parallel to each other and facing the opposite side and seated on the bottom surface 11 a of the gasket holding groove 11. The shoulder portions 33 located on the both side surface portions are continuously extended over the entire circumference.

これらの形態でも、ガスケット３の着座シール部３２から肩部３３までの高さは、ガスケット保持溝１１の底面１１ａから溝肩１１ｂまでの高さ（言い換えれば溝深さ）に対して１００〜９２％、さらに好ましくは１００〜９６％とし、ガスケット３の断面積は、第一ケース部材１におけるガスケット保持溝１１の底面１１ａと第二ケース部材２との間で圧縮されたときの、前記ガスケット保持溝１１に対するガスケット３の充填率が１００％未満となるように設定される。   Also in these forms, the height from the seating seal portion 32 to the shoulder portion 33 of the gasket 3 is 100 to 92 with respect to the height from the bottom surface 11a of the gasket holding groove 11 to the groove shoulder 11b (in other words, the groove depth). %, More preferably 100 to 96%, and the sectional area of the gasket 3 is such that the gasket is held when compressed between the bottom surface 11 a of the gasket holding groove 11 and the second case member 2 in the first case member 1. The filling rate of the gasket 3 with respect to the groove 11 is set to be less than 100%.

なお、本発明の防水構造は、携帯電話機に限らず、例えばディジタルカメラや携帯端末機など、他の電子機器の防水手段としても実施可能である。   The waterproof structure of the present invention is not limited to a mobile phone, and can also be implemented as a waterproof means for other electronic devices such as a digital camera and a mobile terminal.

本発明に係る電子機器の防水構造の第一の形態を示す断面図である。It is sectional drawing which shows the 1st form of the waterproof structure of the electronic device which concerns on this invention. 本発明に係る電子機器の防水構造の第一の形態において、ガスケットに外力が作用した状態を示す断面図である。In 1st form of the waterproof structure of the electronic device which concerns on this invention, it is sectional drawing which shows the state in which the external force acted on the gasket. 本発明に係る電子機器の防水構造の第二の形態を示す断面図である。It is sectional drawing which shows the 2nd form of the waterproof structure of the electronic device which concerns on this invention. 本発明に係る電子機器の防水構造の第三の形態を示す断面図である。It is sectional drawing which shows the 3rd form of the waterproof structure of the electronic device which concerns on this invention. 従来技術による電子機器の防水構造を示す断面図である。It is sectional drawing which shows the waterproof structure of the electronic device by a prior art. 従来技術による電子機器の防水構造において、ガスケットが外力により倒れた状態を示す断面図である。In the waterproof structure of the electronic device by a prior art, it is sectional drawing which shows the state which the gasket fell down with external force.

符号の説明Explanation of symbols

１ 第一ケース部材
１１ ガスケット保持溝
１１ａ 底面
１１ｂ 溝肩
２ 第二ケース部材
３ ガスケット
３１ メインシール部
３２ 着座シール部
３３ 肩部 DESCRIPTION OF SYMBOLS 1 1st case member 11 Gasket holding groove 11a Bottom face 11b Groove shoulder 2 Second case member 3 Gasket 31 Main seal part 32 Seating seal part 33 Shoulder part

Claims (2)

電子機器の外殻ケースを構成する第一ケース部材と第二ケース部材のうち一方の外周部にガスケット保持溝を周設し、ゴム状弾性材料からなるガスケットを、前記第一ケース部材と第二ケース部材のうち他方と、前記ガスケット保持溝の底面に密接させてなる防水構造において、前記ガスケットが、前記第一ケース部材と第二ケース部材のうち他方に密接されるメインシール部と、前記ガスケット保持溝の底面に密接される複数の着座シール部と、前記メインシール部と着座シール部との間の側面部に張り出し形成されて前記ガスケット保持溝の溝肩に近接される全周連続した肩部とを有することを特徴とする電子機器の防水構造。   A gasket holding groove is provided around one of the first case member and the second case member constituting the outer shell case of the electronic device, and the gasket made of a rubber-like elastic material is connected to the first case member and the second case member. In the waterproof structure formed in close contact with the other of the case members and the bottom surface of the gasket holding groove, the gasket includes a main seal portion in close contact with the other of the first case member and the second case member, and the gasket A plurality of seating seal portions that are in close contact with the bottom surface of the holding groove, and a continuous shoulder that is formed on the side surface portion between the main seal portion and the seating seal portion and is adjacent to the groove shoulder of the gasket holding groove. And a waterproof structure for an electronic device. ガスケットの着座シール部から肩部までの高さを、ガスケット保持溝の底面から溝肩までの高さに対して１００〜９２％としたことを特徴とする請求項１に記載の電子機器の防水構造。   2. The waterproofing of an electronic device according to claim 1, wherein the height from the seating seal portion of the gasket to the shoulder portion is 100 to 92% with respect to the height from the bottom surface of the gasket holding groove to the shoulder of the groove. Construction.
JP2008043307A 2007-03-02 2008-02-25 Waterproof structure of electronic equipment Pending JP2008249139A (en)

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JP2019518342A (en) * 2017-04-10 2019-06-27 ペキン シャオミ モバイル ソフトウェア カンパニー， リミテッド VR glasses
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