JP2011228917A - Portable device - Google Patents

Portable device Download PDF

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JP2011228917A
JP2011228917A JP2010096517A JP2010096517A JP2011228917A JP 2011228917 A JP2011228917 A JP 2011228917A JP 2010096517 A JP2010096517 A JP 2010096517A JP 2010096517 A JP2010096517 A JP 2010096517A JP 2011228917 A JP2011228917 A JP 2011228917A
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sealing material
opening
connector cover
lid
housing
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JP5413976B2 (en
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Masato Takahashi
正人 高橋
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NEC Casio Mobile Communications Ltd
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NEC Casio Mobile Communications Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a portable device which includes a lid device freely opening and closing an opening provided at a body of a portable device and securely seals the opening with small risk of defacement and breakage of a seal material.SOLUTION: A connector cover device 5, which opens and closes an opening 8 provided at a first body 2, includes a connector cover 6 closing the opening 8, a semi-solid seal material 14, a sealing material container 12 in which the semi-solid sealing material 14 is filled, a sealing material entrance 9 which is disposed on a surface contacting with the connector cover 6 of the first body 2 to enclose the opening 8 and communicates with the sealing material container 12, and an insertion opening 13 communicating with the seal material container 12. When the connector cover 6 closes the opening 8, part of the connector cover 6 is inserted into the insertion opening 13.

Description

本発明は、筐体の内部空間と外部空間を連絡する開口を自在に開閉する蓋装置を備える携帯機器に関する。   The present invention relates to a portable device including a lid device that freely opens and closes an opening that connects an internal space and an external space of a housing.

携帯機器、例えば、携帯用電話機、携帯情報端末、ノート型パーソナルコンピュータ等の筐体には、内部空間と外部空間を連絡する開口を備えるものがある。例えば、該開口を通して、ケーブル等を筐体の内部空間に挿入して、該ケーブル等を筐体の内部に装置されたコネクタと接続する。あるいは、該開口から筐体の内部空間にメモリカード等を挿入して、筐体の内部に装置されたメモリカード用スロットに装着する。   Some portable devices, for example, portable telephones, portable information terminals, laptop personal computers, and the like have an opening that connects the internal space and the external space. For example, a cable or the like is inserted into the internal space of the housing through the opening, and the cable or the like is connected to a connector installed inside the housing. Alternatively, a memory card or the like is inserted into the internal space of the casing from the opening, and is inserted into a memory card slot installed inside the casing.

また、かかる携帯機器の中には、該開口を閉蓋して、水や埃の侵入を防止するコネクタカバーを備えるものがある。   In addition, some portable devices include a connector cover that closes the opening and prevents water and dust from entering.

例えば、特許文献１には、コネクタカバーの金属製環状突起部の外周に設けた防水リングで、金属製環状突起部と開口部の間の隙間をシールする電子機器が開示されている。   For example, Patent Document 1 discloses an electronic device that seals a gap between a metal annular protrusion and an opening with a waterproof ring provided on the outer periphery of the metal annular protrusion of the connector cover.

特許第３９９１５４６号公報Japanese Patent No. 3991546

特許文献１に開示された電子機器は、コネクタカバーの金属製環状突起部と開口部の間の隙間を防水リングでシールするので、十分な防塵性や防水性が確保される。   Since the electronic device disclosed in Patent Document 1 seals the gap between the metal annular protrusion of the connector cover and the opening with a waterproof ring, sufficient dustproofness and waterproofness are ensured.

しかしながら、該電子機器は、防水リングがコネクタカバーの外周に露出しているので、コネクタカバーを電子機器から取り外した時に、防水リングを傷つけたり、防水リングにゴミが付着したりする恐れがあった。そのために、電子機器の防塵性や防水性が損なわれる恐れがあった。   However, in the electronic device, since the waterproof ring is exposed on the outer periphery of the connector cover, when the connector cover is removed from the electronic device, the waterproof ring may be damaged or dust may adhere to the waterproof ring. . For this reason, there is a risk that the dustproof and waterproof properties of the electronic device may be impaired.

本発明は、このような事情に鑑みてなされたものであり、筐体に開口する開口を自在に開閉する蓋装置を備える携帯機器であって、該開口を確実にシールすることができて、しかも、シール材の汚損や破損の危険が小さい携帯機器を提供することを目的とする。   The present invention has been made in view of such circumstances, and is a portable device including a lid device that freely opens and closes an opening that opens in a housing, and the opening can be reliably sealed, In addition, an object is to provide a portable device with a small risk of contamination or damage of the sealing material.

上記課題を解決するために、本発明に係る携帯機器は、筐体に設けた開口を自在に開閉する蓋装置を備える携帯機器において、前記蓋装置は、前記開口を閉蓋する蓋体と、半固体シール材と、前記半固体シール材が充填されるシール材充填槽と、前記筐体の前記蓋体と接する面にあって前記開口を囲繞するとともに、前記シール材充填槽と連通するシール材出入口と、前記シール材充填槽と連通するとともに、前記蓋体が前記開口を閉蓋するときに、前記蓋体の一部が挿入される挿入口と、を備えることを特徴とする。   In order to solve the above-described problem, a mobile device according to the present invention includes a lid device that freely opens and closes an opening provided in a housing, and the lid device includes a lid body that closes the opening; A semi-solid sealing material, a sealing material filling tank filled with the semi-solid sealing material, and a seal that surrounds the opening and is in communication with the sealing material filling tank on a surface of the housing that contacts the lid It is characterized by comprising: a material inlet / outlet; and an insertion port through which a part of the lid is inserted when the lid closes the opening while communicating with the sealing material filling tank.

前記蓋体は、前記筐体に摺動自在に支持されて、前記蓋体が前記開口を閉蓋するときに、前記蓋体の摺動方向先端が前記挿入口に挿入されるようにしてもよい。   The lid body is slidably supported by the housing, and when the lid body closes the opening, a sliding direction tip of the lid body is inserted into the insertion port. Good.

あるいは、前記開口の内部にコネクタを備えるようにしてもよい。   Alternatively, a connector may be provided inside the opening.

本発明によれば、閉蓋時には、シール材出入口から膨出した半固体シール材が、開口の周縁において筐体と蓋体の間の隙間を塞ぐので、開口を確実にシールすることができる。一方、開蓋時には、半固体シール材はシール材充填槽に引き戻され、筐体の外に漏出しないので、半固体シール材が破損、汚損する危険が小さくなる。   According to the present invention, when the lid is closed, the semi-solid sealing material bulged from the sealing material inlet / outlet closes the gap between the casing and the lid at the periphery of the opening, so that the opening can be reliably sealed. On the other hand, when the lid is opened, the semi-solid sealing material is pulled back into the sealing material filling tank and does not leak out of the housing, so that the risk of the semi-solid sealing material being damaged or soiled is reduced.

本発明の実施形態の一例を示す携帯電話端末の斜視図である。It is a perspective view of the mobile telephone terminal which shows an example of embodiment of this invention. 蓋装置を筐体の外側から見た外形図である。It is the external view which looked at the cover apparatus from the outer side of the housing | casing. 蓋装置の断面図である。It is sectional drawing of a cover apparatus. 蓋装置の変形例を示す断面図である。It is sectional drawing which shows the modification of a cover apparatus. 蓋装置の別の変形例を示す断面図である。It is sectional drawing which shows another modification of a lid | cover apparatus.

以下、本発明の具体的な実施形態を、図面を参照しながら説明する。   Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

図１に示した携帯電話端末１は本発明に係る携帯機器の一例であり、第１の筐体２と第２の筐体３とから構成され、両者はヒンジ軸４を介して、回動自在に連結されている。そして、第１の筐体２の側面には、コネクタカバー装置５を備えている。   A cellular phone terminal 1 shown in FIG. 1 is an example of a portable device according to the present invention, and includes a first casing 2 and a second casing 3, both of which rotate via a hinge shaft 4. It is connected freely. A connector cover device 5 is provided on the side surface of the first housing 2.

図２は、コネクタカバー装置５を第１の筐体２の外側から見た外形図である。図２に示すように、コネクタカバー装置５は、コネクタカバー６を備える。コネクタカバー６は、第１の筐体２に形成されたレール溝７に支持されて、開位置（図２（ａ）参照）と閉位置（図２（ｂ））の間で自在に摺動する。また、コネクタカバー装置５は、開口８を備える。開口８は第１の筐体２の内部と外部を連絡する。また、開口８の奥（第１の筐体２の内部）には、図示しないコネクタが備えられて、該コネクタは外部から開口８を通って挿通される信号ケーブルと連結される。   FIG. 2 is an external view of the connector cover device 5 as viewed from the outside of the first housing 2. As shown in FIG. 2, the connector cover device 5 includes a connector cover 6. The connector cover 6 is supported by a rail groove 7 formed in the first housing 2, and freely slides between an open position (see FIG. 2 (a)) and a closed position (FIG. 2 (b)). To do. The connector cover device 5 includes an opening 8. The opening 8 communicates the inside and the outside of the first housing 2. Further, a connector (not shown) is provided in the back of the opening 8 (inside the first housing 2), and the connector is connected to a signal cable inserted through the opening 8 from the outside.

また、図２（ｃ）に示すように、コネクタカバー６の上下端にはレール１０が形成されて、レール１０はレール溝７に係合する。コネクタカバー６の前端（閉位置に近い端）には、シール材押し出し爪１１が形成されている。シール材押し出し爪１１の作用については、後述する。   Further, as shown in FIG. 2C, rails 10 are formed on the upper and lower ends of the connector cover 6, and the rails 10 are engaged with the rail grooves 7. A seal material push-out claw 11 is formed at the front end of the connector cover 6 (the end close to the closed position). The operation of the sealing material pushing claw 11 will be described later.

さて、図３はコネクタカバー装置５を図２（ａ）のＡＡ’線で切断した断面図であり、コネクタカバー６が開位置にある状態（図３（ａ））、開位置と閉位置の間にある状態（図３（ｂ））、及び閉位置にある状態（図３（ｃ））を、それぞれ示している。なお、図３においては、コネクタカバー装置５の上方が第１の筐体２の内部の空間に相当し、下方が第１の筐体２の外部に相当する。   FIG. 3 is a cross-sectional view of the connector cover device 5 taken along line AA ′ in FIG. 2A. The connector cover 6 is in the open position (FIG. 3A), and the open position and the closed position are shown. A state in between (FIG. 3B) and a state in the closed position (FIG. 3C) are shown. In FIG. 3, the upper side of the connector cover device 5 corresponds to the space inside the first housing 2, and the lower side corresponds to the outside of the first housing 2.

図３に示すように、第１の筐体２（正確に言えば、第１の筐体２の外郭を構成する殻体の内部）には、シール材充填槽１２が形成されている。シール材充填槽１２はシール材出入口９と連通している。また、第１の筐体２の第１の筐体２のシール材押し出し爪１１と対向する部位には挿入口１４があって、挿入口１４は、シール材充填槽１２と連通している。   As shown in FIG. 3, a sealing material filling tank 12 is formed in the first housing 2 (more precisely, the inside of the shell constituting the outer shell of the first housing 2). The sealing material filling tank 12 communicates with the sealing material inlet / outlet 9. Further, an insertion port 14 is provided at a portion of the first housing 2 facing the sealing material pushing claw 11 of the first housing 2, and the insertion port 14 communicates with the sealing material filling tank 12.

コネクタカバー６を閉位置方向にスライドさせると、コネクタカバー６の先端のシール材押し出し爪１１は挿入口１４を通って、シール材充填槽１２の内部に進入する（図３（ｂ）参照）。シール材押し出し爪１１がシール材充填槽１２の内部に進入すると、シール材充填槽１２に充填された半固体シール材１４の一部がシール材出入口９から押し出される。そして、コネクタカバー６が閉位置に達する（図３（ｃ）参照）と、シール材充填槽１２から押し出された半固体シール材１４が、開口８の周縁において、筐体２とコネクタカバー６の間の隙間を塞ぐ。   When the connector cover 6 is slid in the closed position direction, the sealing material pushing claw 11 at the tip of the connector cover 6 passes through the insertion port 14 and enters the inside of the sealing material filling tank 12 (see FIG. 3B). When the sealing material pushing claw 11 enters the inside of the sealing material filling tank 12, a part of the semi-solid sealing material 14 filled in the sealing material filling tank 12 is pushed out from the sealing material inlet / outlet 9. When the connector cover 6 reaches the closed position (see FIG. 3C), the semi-solid sealing material 14 pushed out from the sealing material filling tank 12 is moved between the housing 2 and the connector cover 6 at the periphery of the opening 8. Close the gap between them.

このように、シール材出入口９を通ってシール材充填槽１２から押し出された半固体シール材１４が、開口８の周縁において、筐体２とコネクタカバー６の間の隙間を塞ぐので、開口８は塵埃密、水密に閉蓋される。   Thus, the semi-solid sealing material 14 pushed out from the sealing material filling tank 12 through the sealing material inlet / outlet 9 closes the gap between the housing 2 and the connector cover 6 at the periphery of the opening 8. Is closed in a dust-tight and water-tight manner.

逆に、コネクタカバー６を閉位置（図３（ｃ））から開位置（図３（ａ））に戻すと、シール材押し出し爪１１が半固体シール材１４に加えていた圧力が消滅するので、シール材出入口９を通ってシール材充填槽１２の外に押し出されていた半固体シール材１４は、シール材充填槽１２の内部に戻る。そのため、開口８を開放した状態では、半固体シール材１４は第１の筐体２の外部に露出しない。   Conversely, when the connector cover 6 is returned from the closed position (FIG. 3C) to the open position (FIG. 3A), the pressure applied to the semi-solid sealing material 14 by the sealing material pushing claw 11 disappears. The semi-solid sealing material 14 that has been pushed out of the sealing material filling tank 12 through the sealing material inlet / outlet 9 returns to the inside of the sealing material filling tank 12. Therefore, the semi-solid sealing material 14 is not exposed to the outside of the first housing 2 in a state where the opening 8 is opened.

半固体シール材１４には、ポリビニルアルコールの水溶液と硼砂の水溶液を混合して、ポリビニルアルコールの分子を架橋結合させた、俗にスライムと呼ばれる材料を使用する。また、半固体シール材１４は、ポリビニルアルコールの水溶液と硼砂の水溶液の混合物を、半固体化する前（流動性を失う前）に、シール材充填槽１２に注入充填して形成される。あるいは、図示しない成形型に前記混合物を注入充填して、所定の形状に成形したものをシール材充填槽１２の中に組み込むようにしても良い。   The semi-solid sealing material 14 uses a material commonly called slime, in which an aqueous solution of polyvinyl alcohol and an aqueous solution of borax are mixed to crosslink polyvinyl alcohol molecules. The semi-solid sealing material 14 is formed by injecting and filling a mixture of an aqueous solution of polyvinyl alcohol and an aqueous solution of borax into the sealing material filling tank 12 before becoming semi-solid (before losing fluidity). Or you may make it inject | pour and fill the said mixture into the shaping | molding die which is not shown in figure, and what was shape | molded by the predetermined shape is integrated in the sealing material filling tank 12. FIG.

以上説明したように、コネクタカバー６を閉位置にすると、シール材充填槽１２の内部に充填された半固体シール材１４が、開口８の周縁において、第１の筐体２とコネクタカバー６を間の隙間を塞ぐので、開口８は塵埃密、水密に閉蓋される。そのため第１の筐体２の内部に装置された電子部品等は塵埃や水分から十分に保護される。また、コネクタカバー６が開位置に有る場合は、半固体シール材１４がシール材充填槽１２の内部に引き込まれるので、半固体シール材１４を汚したり傷つけたりすることがない。そのため、半固体シール材１４の汚損や破損を抑制できる。また、汚損や破損に起因するシール性能の低下を抑制できる。   As described above, when the connector cover 6 is in the closed position, the semi-solid sealing material 14 filled in the sealing material filling tank 12 is attached to the first casing 2 and the connector cover 6 at the periphery of the opening 8. Since the gap between them is closed, the opening 8 is closed in a dust-tight and water-tight manner. For this reason, the electronic components and the like installed inside the first housing 2 are sufficiently protected from dust and moisture. When the connector cover 6 is in the open position, the semi-solid sealing material 14 is drawn into the sealing material filling tank 12, so that the semi-solid sealing material 14 is not soiled or damaged. For this reason, the semi-solid sealing material 14 can be prevented from being damaged or damaged. Moreover, the fall of the sealing performance resulting from pollution and a breakage | damage can be suppressed.

また、携帯電話端末１は開口８の内部にコネクタを備えているので、コネクタカバー装置５を開放するだけで、ケーブル等を携帯電話端末１の内部に引き込んで接続することができる。ケーブル等を接続しないときは、コネクタカバー装置５を閉鎖するだけで、コネクタは塵埃や水分から十分に保護される。   Further, since the cellular phone terminal 1 is provided with a connector inside the opening 8, a cable or the like can be drawn into the cellular phone terminal 1 and connected by simply opening the connector cover device 5. When a cable or the like is not connected, the connector is sufficiently protected from dust and moisture simply by closing the connector cover device 5.

また、コネクタカバー６は第１の筐体２に摺動自在に支持されて、開口８を開放している間も第１の筐体２に保持されているので、コネクタカバー６の紛失や破損の危険が小さい。   Further, since the connector cover 6 is slidably supported by the first housing 2 and is held by the first housing 2 while the opening 8 is opened, the connector cover 6 is lost or damaged. The danger of is small.

また、上述の実施形態は本発明の実施形態の例示であって、本発明の技術的範囲は上記説明によって限定されない。本発明は特許請求の範囲に記載された技術的思想の限りにおいて、応用、変形あるいは改良して実施することができる。   Moreover, the above-mentioned embodiment is an illustration of embodiment of this invention, Comprising: The technical scope of this invention is not limited by the said description. The present invention can be implemented by application, modification or improvement within the scope of the technical idea described in the claims.

例えば、上述の実施形態では、半固体シール材１４に、ポリビニルアルコールに硼砂を加えてポリビニルアルコールの分子を架橋結合させた、俗にスライムと呼ばれる材料を使用する例を示したが、半固体シール材１４の素材は、スライムには限定されない。半固体、つまり固体と液体の中間の性質を備える材料、内力と外力が釣り合った状態では所定の形状を保つが、一部を押圧すればその影響が他の部位に及ぶような材料を、任意に選択することができる。   For example, in the above-described embodiment, an example in which a material commonly called slime in which borax is added to polyvinyl alcohol and polyvinyl alcohol molecules are cross-linked is used as the semi-solid sealing material 14. The material of the material 14 is not limited to slime. Any material that is semi-solid, that is, a material that has an intermediate property between solid and liquid, and that maintains a predetermined shape in a state where internal and external forces are balanced, can be applied to other parts by pressing a part. Can be selected.

また、上述の実施形態では、コネクタカバー６が開位置と閉位置の間でスライドする例を示したが、他の形態を選択することもできる。例えば、図４に示すように、ヒンジ１５を介してコネクタカバー６を第１の筐体２に回動自在に取り付けて、コネクタカバー６が開位置（図４（ａ）参照）と閉位置（図４（ｂ））の間で回動するようにしても良い。あるいは、図５に示すように、コネクタカバー６を第１の筐体２に着脱自在に取り付けて、コネクタカバー６を第１の筐体２に装着すると、シール材押し出し爪１１が半固体シール材１４をシール材出入口９から押し出す（図５（ｂ）参照）ようにしても良い。   In the above-described embodiment, an example in which the connector cover 6 slides between the open position and the closed position has been described, but other forms may be selected. For example, as shown in FIG. 4, the connector cover 6 is rotatably attached to the first housing 2 via the hinge 15, and the connector cover 6 is opened (see FIG. 4A) and closed ( You may make it rotate between FIG.4 (b)). Alternatively, as shown in FIG. 5, when the connector cover 6 is detachably attached to the first housing 2 and the connector cover 6 is attached to the first housing 2, the sealing material pushing claw 11 becomes a semi-solid sealing material. 14 may be pushed out from the sealing material entrance 9 (see FIG. 5B).

また、上述の実施形態では、携帯機器の一例として携帯電話端末１を示したが、本発明の携帯機器は、携帯電話端末１には限定されない。例えば、電子卓上計算機、電子辞書、携帯情報端末（ＰＤＡ：Personal Digital Assistant）、ノート型パーソナルコンピュータ、携帯オーディオ機器、電子カメラ、携帯テレビ受信器、携帯通信機器等、各種の携帯機器に適用することができる。   In the above-described embodiment, the mobile phone terminal 1 is shown as an example of the mobile device, but the mobile device of the present invention is not limited to the mobile phone terminal 1. For example, the present invention is applied to various portable devices such as an electronic desk calculator, an electronic dictionary, a personal digital assistant (PDA), a notebook personal computer, a portable audio device, an electronic camera, a portable television receiver, and a portable communication device. Can do.

１…携帯電話端末，２…第１の筐体，３…第２の筐体，４…ヒンジ軸，５…コネクタカバー装置，６…コネクタカバー，７…レール溝，８…開口，９…シール材出入口，１０…レール，１１…シール材押し出し爪，１２…シール材充填槽，１３…挿入口，１４…半固体シール材，１５…ヒンジ DESCRIPTION OF SYMBOLS 1 ... Mobile telephone terminal, 2 ... 1st housing | casing, 3 ... 2nd housing | casing, 4 ... Hinge shaft, 5 ... Connector cover apparatus, 6 ... Connector cover, 7 ... Rail groove, 8 ... Opening, 9 ... Seal Material inlet / outlet, 10 ... rail, 11 ... seal material extrusion claw, 12 ... seal material filling tank, 13 ... insertion port, 14 ... semi-solid seal material, 15 ... hinge

Claims (3)

筐体に設けた開口を自在に開閉する蓋装置を備える携帯機器において、
前記蓋装置は、
前記開口を閉蓋する蓋体と、
半固体シール材と、
前記半固体シール材が充填されるシール材充填槽と、
前記筐体の前記蓋体と接する面にあって前記開口を囲繞するとともに、前記シール材充填槽と連通するシール材出入口と、
前記シール材充填槽と連通するとともに、前記蓋体が前記開口を閉蓋するときに、前記蓋体の一部が挿入される挿入口と、を備える
ことを特徴とする携帯機器。 In a portable device including a lid device that freely opens and closes an opening provided in a housing,
The lid device is
A lid for closing the opening;
A semi-solid sealing material;
A sealing material filling tank filled with the semi-solid sealing material;
A sealing material inlet / outlet that communicates with the sealing material filling tank and surrounds the opening on the surface of the housing that contacts the lid;
A portable device comprising: an insertion port that communicates with the sealing material filling tank and into which a part of the lid is inserted when the lid closes the opening. 前記蓋体は、前記筐体に摺動自在に支持されて、
前記蓋体が前記開口を閉蓋するときに、前記蓋体の摺動方向先端が前記挿入口に挿入される
ことを特徴とする請求項１に記載の携帯機器。 The lid is slidably supported by the housing,
The portable device according to claim 1, wherein when the lid closes the opening, a sliding direction tip of the lid is inserted into the insertion port. 前記開口の内部にコネクタを備える
ことを特徴とする請求項１又は請求項２に記載の携帯機器。 The mobile device according to claim 1, wherein a connector is provided inside the opening.
JP2010096517A 2010-04-19 2010-04-19 Portable device Expired - Fee Related JP5413976B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7541169B1 (en) 2023-10-12 2024-08-27 レノボ・シンガポール・プライベート・リミテッド Electronics

Citations (4)

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JPH10324360A (en) * 1997-05-26 1998-12-08 Nec Corp Waterproof structure of casing
JP3118802U (en) * 2005-10-24 2006-02-09 弘 田中 Surface protection plate for mobile phone earphone microphone terminal
JP2006147868A (en) * 2004-11-19 2006-06-08 Canon Electronics Inc Seal structure of cover
JP2008182093A (en) * 2007-01-25 2008-08-07 Sanyo Electric Co Ltd Waterproofing mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10324360A (en) * 1997-05-26 1998-12-08 Nec Corp Waterproof structure of casing
JP2006147868A (en) * 2004-11-19 2006-06-08 Canon Electronics Inc Seal structure of cover
JP3118802U (en) * 2005-10-24 2006-02-09 弘 田中 Surface protection plate for mobile phone earphone microphone terminal
JP2008182093A (en) * 2007-01-25 2008-08-07 Sanyo Electric Co Ltd Waterproofing mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7541169B1 (en) 2023-10-12 2024-08-27 レノボ・シンガポール・プライベート・リミテッド Electronics

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