JP2005129573A - Waterproof structure of electronic equipment - Google Patents

Waterproof structure of electronic equipment Download PDF

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JP2005129573A
JP2005129573A JP2003360794A JP2003360794A JP2005129573A JP 2005129573 A JP2005129573 A JP 2005129573A JP 2003360794 A JP2003360794 A JP 2003360794A JP 2003360794 A JP2003360794 A JP 2003360794A JP 2005129573 A JP2005129573 A JP 2005129573A
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cable
housing
waterproof structure
case
cases
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JP4201681B2 (en
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Kazuyuki Yoshida
和行 吉田
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Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
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Tokyo Sanyo Electric Co Ltd
Tottori Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
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  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide the waterproof structure of electronic equipment capable of making a dimensional control with a high accuracy unnecessary and reducing an assembly cost. <P>SOLUTION: In the waterproof structure of electronic equipment containing cases 12 and 13 composed of first and second box bodies in which an electronic part such as an electronic-circuit board 11 is housed, notched sections 12b and 13b formed to the abutting end faces 12a and 13a of the first and/or second cases so as to hold a cable 16 from the outside by the cases 12 and 13 and form inserting holes introducing the cable into the cases and elastic bodies 14 and 15 interposed to the abutting end faces 12a and 13a of the cases 12 and 13 and the notched sections, the whole outer periphery of a section held by the notched sections of the cable 16 is press-contacted with the elastic bodies by a force in the direction that the cases 12 and 13 are abutted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、外部ケーブル導入部に関して防水性を備えるようにした電子機器の防水構造に関するものである。   The present invention relates to a waterproof structure for an electronic device provided with a waterproof property for an external cable introduction portion.

従来、各種電子機器においては、ケース内に収納された電子回路、電子部品の防水性を確保するために、密閉式ケースを使用すると共に、外部との接続のためのケーブル等の導入部に防水性を備えるようにした防水構造が知られている。   Conventionally, in various electronic devices, in order to ensure the waterproofness of the electronic circuits and electronic components housed in the case, a sealed case is used and the introduction part such as a cable for connection to the outside is waterproofed. A waterproof structure is known which has a property.

このような防水構造を備えた電子機器は、例えば図４に示すように構成されている。すなわち、電子部品が配置された基板４１を樹脂成型されたケース４２及びカバー４３で収容し、ケース４２及びカバー４３の互いに付き合わされる環状壁４２ａ及び４３ａとの間に平坦な環状の防水パッキン４４が配置されることによりケース４２及びかバー４３の間の防水性が確保されるようになっている。   An electronic device having such a waterproof structure is configured, for example, as shown in FIG. That is, the substrate 41 on which electronic components are arranged is accommodated by a resin-molded case 42 and a cover 43, and a flat annular waterproof packing 44 is provided between the case 42 and the cover 43 and the annular walls 42a and 43a. As a result, the waterproof property between the case 42 and the bar 43 is ensured.

基板４１にはケーブル４５が接続され、ケーブル４５は機器の外部から導入されている。このケーブル４５はケース４２及びカバー４３に設けられたＵ字形の切欠部４２ｂ及び４３ｂと、ケーブルの先端部分に取り付けられ且つ切欠部４２ｂ、４３ｂ内に圧入されるブッシュ４７が設けられている。ブッシュ４７はケーブルの先端部分に一体成形あるいは被嵌されることにより、一体的に形成されている。この場合、ブッシュ４７の外形はケース４２とカバー４３が組み合わされたときに切欠部４２ｂ、４３ｂが組み合わされた形状に合わせて円柱状に形成されていると共に、圧入により切欠部４２ｂ、４３ｂの内面に密着するように切欠部４２ｂ、４３ｂの内寸より僅かに大きく形成されている。更にブッシュ４７は、ケース４２とカバー４３が組み合わされたとき、ブッシュ４７にパッキン４４の切欠部４４ａが密着する。これによりケーブル４５を機器内に導入する部分における防水構造が得られるようになっている。   A cable 45 is connected to the substrate 41, and the cable 45 is introduced from the outside of the device. The cable 45 is provided with U-shaped notches 42b and 43b provided in the case 42 and the cover 43, and a bush 47 which is attached to the tip portion of the cable and press-fitted into the notches 42b and 43b. The bush 47 is integrally formed by being integrally formed or fitted to the tip portion of the cable. In this case, the outer shape of the bush 47 is formed in a cylindrical shape in accordance with the combined shape of the notches 42b and 43b when the case 42 and the cover 43 are combined, and the inner surfaces of the notches 42b and 43b by press-fitting. Are formed slightly larger than the inner dimensions of the notches 42b and 43b. Further, when the case 42 and the cover 43 are combined, the notch 44 a of the packing 44 is in close contact with the bush 47. Thereby, the waterproof structure in the part which introduces the cable 45 in an apparatus is obtained.

しかしながら、上述した防水構造では、パッキン４４はケース４２とカバー４３の押圧力がＹ方向には作用するが、Ｘ方向には作用しないので、パッキン４４とブッシュ４７との密着面で防水性が弱くなる。その為、パッキン４４とブッシュ４７との密着面に於ける防水性を確保するためにはブッシュ４７とパッキン４４の切欠部４４ａの寸法公差の精度を高める必要がある。これにより、ブッシュ４７及び切欠部４４ａの厳密な寸法管理が必要となり、さらに、ケーブル４５にブッシュ４７を一体的に形成する必要があるため、組み立て性が悪くコストが高くなってしまうといった問題があった。   However, in the waterproof structure described above, the packing 44 acts in the Y direction while the pressing force of the case 42 and the cover 43 acts in the Y direction, but does not act in the X direction, so that the waterproofness is weak at the contact surface between the packing 44 and the bush 47. Become. Therefore, in order to ensure waterproofness at the contact surface between the packing 44 and the bush 47, it is necessary to increase the accuracy of the dimensional tolerance of the notch 44a of the bush 47 and the packing 44. As a result, it is necessary to strictly manage the dimensions of the bush 47 and the notch 44a, and further, since the bush 47 needs to be formed integrally with the cable 45, there is a problem that the assemblability is poor and the cost is increased. It was.

本発明は上記の点に鑑みなされたものであり、高精度の寸法管理が不要となり、更に、組み立てコストが低減され得るようにした電子機器の防水構造を提供することを目的とする。   The present invention has been made in view of the above points, and an object of the present invention is to provide a waterproof structure for an electronic device in which high-accuracy dimension management is not required and the assembly cost can be reduced.

上記目的を達成するために本発明の電子機器の防水構造は、電子回路基板などの電子部品を収容する第１及び第２の筐体からなる筐体と、外部からのケーブルを前記第１及び第２の筐体で挟持し前記筐体内に導入する挿通孔を形成するように前記第１及び／又は第２の筐体の突き合わせ端面に形成された切欠部と、前記第１及び第２の筐体の突き合わせ端面及び前記切欠部に介挿される弾性体と、を含んだ電子機器の防水構造において、前記ケーブルの前記切欠部で挟持される部分の全外周は、前記第１の筐体と第２の筐体を突き合わせる方向の力で前記弾性体に圧接される。   In order to achieve the above object, a waterproof structure for an electronic device according to the present invention includes a housing composed of first and second housings for housing electronic components such as an electronic circuit board, and an external cable. A notch formed on the butted end surface of the first and / or second casing so as to form an insertion hole to be sandwiched and introduced into the casing by the second casing, and the first and second In the waterproof structure of the electronic device including the butted end surface of the housing and the elastic body inserted in the notch, the entire outer periphery of the portion sandwiched between the notches of the cable is the same as the first housing The elastic body is pressed by a force in a direction in which the second casing is abutted.

前記弾性体は１面を第１の筐体の突き合わせ面と接する第１の弾性体と、１面を第２の筐体の突き合わせ面と接する第２の弾性体とからなり、前記ケーブルは前記第１及び第２の弾性体によって挟持される。   The elastic body includes a first elastic body having one surface in contact with the butting surface of the first housing, and a second elastic body having one surface in contact with the butting surface of the second housing, and the cable includes the cable It is clamped by the first and second elastic bodies.

また、前記ケーブルの前記第１の筐体側と前記第２の筐体側の境界となる両端は、鋭角となっている   Moreover, the both ends used as the boundary of the said 1st housing | casing side and the said 2nd housing | casing side of the said cable are acute angles.

本発明の電子機器の防水構造によれば、高精度の寸法管理が不要となり、さらに部品コストが低減され得るようにした極めて優れた電子機器の防水構造が提供され得ることになる。   According to the waterproof structure for an electronic device of the present invention, it is possible to provide an extremely excellent waterproof structure for an electronic device that eliminates the need for highly accurate dimensional management and further reduces the component cost.

以下、図面に示した実施形態に基づいて、本発明を詳細に説明する。図１は本発明による防水構造を用いた電子機器の分解斜視図である。   Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings. FIG. 1 is an exploded perspective view of an electronic apparatus using a waterproof structure according to the present invention.

この電子機器は、電子部品が配置された基板１１と、基板１１を収容する樹脂成型されたケース１２及びカバー１３と、ケース１２及びカバー１３の互いに付き合わされる環状壁１２ａ及び１３ａに各々接するように平坦な環状のケース防水パッキン１４及びカバー防水パッキン１５と、機器内に導入され基板１１と接続するケーブル１６と、から構成されている。   The electronic device is in contact with a substrate 11 on which electronic components are arranged, a resin-molded case 12 and cover 13 for housing the substrate 11, and annular walls 12a and 13a of the case 12 and the cover 13 that are attached to each other. A flat annular case waterproof packing 14 and a cover waterproof packing 15, and a cable 16 that is introduced into the device and connected to the substrate 11.

なお、ケース１２とカバー１３とは図示しないボルトにより締め付けることで固定するように構成されている。   The case 12 and the cover 13 are configured to be fixed by tightening with a bolt (not shown).

ケース１２及びカバー１３にはケーブル１６を機器内に導入するために各々切欠部１２ｂ，１３ｂが設けられている。切欠部１２ｂ，１３ｂは、ケース１２及びカバー１３を組み合わせたときに切欠部１２ｂ、１３ｂが成す空間部の形状がケーブル１６の形状よりも幾分大きい形状となるように形成されている。   The case 12 and the cover 13 are provided with notches 12b and 13b, respectively, for introducing the cable 16 into the device. The notches 12 b and 13 b are formed so that the shape of the space formed by the notches 12 b and 13 b is somewhat larger than the shape of the cable 16 when the case 12 and the cover 13 are combined.

ケース防水パッキン１４及びカバー防水パッキン１５は、ケース１２とカバー１３が挟持して組み合わせられたとき、ボルトの締め付ける力で変形するゴムやエラストマー等の材質からなる弾性体であり、各々ケース１２及びカバー１３の環状壁１２ａ及び１３ａと切欠部１２ｂ及び１３ｂに接する形状となっている。   The case waterproof packing 14 and the cover waterproof packing 15 are elastic bodies made of a material such as rubber or elastomer that is deformed by a tightening force of a bolt when the case 12 and the cover 13 are sandwiched and combined. It has a shape in contact with the 13 annular walls 12a and 13a and the notches 12b and 13b.

図２は上述の構成部品を組み合わせたときのケーブル１６がケース１２及びカバー１３によってケース防水パッキン１４及びカバー防水パッキン１５が挟持される部分の断面図である。   FIG. 2 is a cross-sectional view of a portion where the case waterproof packing 14 and the cover waterproof packing 15 are sandwiched between the case 12 and the cover 13 when the above-described components are combined.

ケース防水パッキン１４及びカバー防水パッキン１５は、組み合わされるときのケース１２及びカバー１３の上下方向の力によって上下方向に弾性変形する。その結果、ケース１２とケース防水パッキン１４、カバー１３とカバー防水パッキン１５及びケース防水パッキン１４とカバー防水パッキン１５が密着し防水性が確保される、
同様にケーブル１６は左右方向に長い六角形であるので、ケーブル１６の各辺には上下方向の力が印加されるので、ケーブル１６の各辺にケース防水パッキン１４及びカバー防水パッキン１５が密着し防水性が確保される。 The case waterproof packing 14 and the cover waterproof packing 15 are elastically deformed in the vertical direction by the vertical force of the case 12 and the cover 13 when combined. As a result, the case 12 and the case waterproof packing 14, the cover 13 and the cover waterproof packing 15, and the case waterproof packing 14 and the cover waterproof packing 15 are in close contact with each other to ensure waterproofness.
Similarly, since the cable 16 is a hexagon that is long in the left-right direction, a vertical force is applied to each side of the cable 16, so that the case waterproof packing 14 and the cover waterproof packing 15 are in close contact with each side of the cable 16. Waterproofness is ensured.

なお、上述した実施例ではケーブル１６の断面形状は六角形で説明したが、これに限定されるものではない。例えば図３に示すような台形としても良い。この場合、切欠部はケース１２又はカバー１３のいずれかに設ければよく、カバー１２又はケース１３の形状が簡単となり設計し易い。   In the above-described embodiment, the cross-sectional shape of the cable 16 has been described as a hexagon, but is not limited thereto. For example, it may be a trapezoid as shown in FIG. In this case, the notch may be provided in either the case 12 or the cover 13, and the shape of the cover 12 or the case 13 becomes simple and easy to design.

なお、ケーブル１６の形状はケース１２とカバー１３とによって挟持される部分のみ上述した形状としてもよい。   Note that the shape of the cable 16 may be the above-described shape only for the portion sandwiched between the case 12 and the cover 13.

このように、本発明では、ケース１２とカバー１３を付き合わされる力のみで防水性が確保されるので、高精度の寸法管理が不要となり、更に、ケーブルにブッシュを取り付ける作業も無くなり組み立て性がよく、コストが低減され得るようにした電子機器の防水構造が提供され得ることになる。

As described above, in the present invention, since waterproofness is ensured only by the force with which the case 12 and the cover 13 are brought together, high-accuracy dimensional control is not required, and further, the work of attaching the bush to the cable is eliminated and the assembly is easy. Well, it is possible to provide a waterproof structure for an electronic device in which the cost can be reduced.

本発明による電子機器の防水構造の一実施形態を示す概略斜視図である。It is a schematic perspective view which shows one Embodiment of the waterproof structure of the electronic device by this invention. 本発明による電子機器の防水構造のケーブルが挟持される部分の断面図である。It is sectional drawing of the part by which the cable of the waterproof structure of the electronic device by this invention is clamped. 本発明による電子機器の防水構造のケーブルが挟持される部分の断面図である。It is sectional drawing of the part by which the cable of the waterproof structure of the electronic device by this invention is clamped. 従来の防水構造の一例を示す分解斜視図である。It is a disassembled perspective view which shows an example of the conventional waterproof structure.

符号の説明Explanation of symbols

１２ ケース
１３ カバー
１４ ケース防水パッキン
１５ カバー防水パッキン
１６ ケーブル 12 Case 13 Cover 14 Case waterproof packing 15 Cover waterproof packing 16 Cable

Claims (3)

電子回路基板などの電子部品を収容する第１及び第２の筐体からなる筐体と、外部からのケーブルを前記第１及び第２の筐体で挟持し前記筐体内に導入する挿通孔を形成するように前記第１及び／又は第２の筐体の突き合わせ端面に形成された切欠部と、前記第１及び第２の筐体の突き合わせ端面及び前記切欠部に介挿される弾性体と、を含んだ電子機器の防水構造において、
前記ケーブルの前記切欠部で挟持される部分の全外周は、前記第１の筐体と第２の筐体を突き合わせる方向の力で前記弾性体に圧接されることを特徴とする電子機器の防水構造。 A housing composed of first and second housings for storing electronic components such as an electronic circuit board, and an insertion hole for holding an external cable between the first and second housings and introducing them into the housing A notch formed on the butting end surface of the first and / or second housing to form, and an elastic body inserted in the butting end surface of the first and second housing and the notching portion; In the waterproof structure of electronic equipment including
An entire outer periphery of a portion of the cable held by the notch is pressed against the elastic body with a force in a direction in which the first housing and the second housing are abutted with each other. Waterproof structure. 前記弾性体は１面を第１の筐体の突き合わせ面と接する第１の弾性体と、１面を第２の筐体の突き合わせ面と接する第２の弾性体とからなり、前記ケーブルは前記第１及び第２の弾性体によって挟持される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。   The elastic body includes a first elastic body having one surface in contact with the butting surface of the first housing, and a second elastic body having one surface in contact with the butting surface of the second housing, and the cable includes the cable The waterproof structure for an electronic device according to claim 1, wherein the waterproof structure is held between the first and second elastic bodies. 前記ケーブルの前記第１の筐体側と前記第２の筐体側の境界となる両端は、鋭角となっていることを特徴とする請求項１あるいは２に記載の電子機器の防水構造。

3. The waterproof structure for an electronic device according to claim 1, wherein both ends of the cable serving as a boundary between the first housing side and the second housing side are acute angles.

JP2003360794A 2003-10-21 2003-10-21 Waterproof structure of electronic equipment Expired - Lifetime JP4201681B2 (en)

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JP2009026966A (en) * 2007-07-19 2009-02-05 Fujitsu Ltd Sealing structure, electronic apparatus, portable device and sealing method
WO2009098844A1 (en) * 2008-02-04 2009-08-13 Panasonic Corporation Portable terminal device
JP2009201058A (en) * 2008-02-25 2009-09-03 Fujitsu Ltd Waterproof electronic device
JP2011176120A (en) * 2010-02-24 2011-09-08 Fujitsu Ltd Electronic apparatus
JP2012089432A (en) * 2010-10-22 2012-05-10 Panasonic Corp Temperature fuse
EP2366978A3 (en) * 2010-03-15 2015-01-21 Azbil Corporation Cable leading-out structure
US10894328B2 (en) 2018-03-29 2021-01-19 Fanuc Corporation Robot wiring additional routing method and robot
JP7480805B2 (en) 2022-06-21 2024-05-10 カシオ計算機株式会社 Electronic devices, light source devices, and projection devices

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JP3093761U (en) * 2002-10-31 2003-05-16 國▲ふん▼ 蘇 Tree Light Structure Enhancement Control Box

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JP2000101265A (en) * 1998-09-22 2000-04-07 Mitsumi Electric Co Ltd Water-proof structure of electric device
JP3093761U (en) * 2002-10-31 2003-05-16 國▲ふん▼ 蘇 Tree Light Structure Enhancement Control Box

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009502658A (en) * 2005-07-13 2009-01-29 アクアパック・インターナショナル・リミテッド Forming a hermetic seal around the cable
US8112129B2 (en) 2007-07-19 2012-02-07 Fujitsu Limited Seal structure, electronic apparatus, and sealing method
JP2009026966A (en) * 2007-07-19 2009-02-05 Fujitsu Ltd Sealing structure, electronic apparatus, portable device and sealing method
KR101127347B1 (en) * 2007-07-19 2012-03-29 후지쯔 가부시끼가이샤 Seal structure, electronic apparatus, portable apparatus and sealing method
JP2009188488A (en) * 2008-02-04 2009-08-20 Panasonic Corp Portable terminal device
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JP2009201058A (en) * 2008-02-25 2009-09-03 Fujitsu Ltd Waterproof electronic device
JP2011176120A (en) * 2010-02-24 2011-09-08 Fujitsu Ltd Electronic apparatus
EP2366978A3 (en) * 2010-03-15 2015-01-21 Azbil Corporation Cable leading-out structure
JP2012089432A (en) * 2010-10-22 2012-05-10 Panasonic Corp Temperature fuse
US10894328B2 (en) 2018-03-29 2021-01-19 Fanuc Corporation Robot wiring additional routing method and robot
US11305439B2 (en) 2018-03-29 2022-04-19 Fanuc Corporation Robot wiring additional routing method and robot
JP7480805B2 (en) 2022-06-21 2024-05-10 カシオ計算機株式会社 Electronic devices, light source devices, and projection devices

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