JP2011009510A - Waterproof structure of case - Google Patents

Waterproof structure of case Download PDF

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Publication number
JP2011009510A
JP2011009510A JP2009152227A JP2009152227A JP2011009510A JP 2011009510 A JP2011009510 A JP 2011009510A JP 2009152227 A JP2009152227 A JP 2009152227A JP 2009152227 A JP2009152227 A JP 2009152227A JP 2011009510 A JP2011009510 A JP 2011009510A
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case
groove
wall portion
lower case
waterproof structure
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Yasunari Iida
康成 飯田
Shinichi Hasegawa
伸一 長谷川
Takashi Sasaki
隆 佐々木
Tsuneo Hirase
恒雄 平瀬
Atsushi Watabe
濃 渡部
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to JP2009152227A priority Critical patent/JP2011009510A/en
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  • Casings For Electric Apparatus (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure of a case that suppresses infiltration of water, a detergent and soap to a junction surface of the case.SOLUTION: The waterproof structure of the case includes: a lower case 7 made of a thermoplastic resin; an annular groove 11 formed at a peripheral edge of the lower case 7; a through-hole 12 communicating with the groove 11, and formed in the lower case 7 so that an electrode 13 is inserted; heating elements 17 and 18 arranged in the groove 11 to be partially exposed from the through-hole 12; an upper case 6 made of a thermoplastic resin; and a projection part 16 formed on the upper case 6 to be fit in the groove 11; wherein the electrode 13 is inserted into the through-hole 12 and the heating elements 17 and 18 are supplied with electric power to weld a bottom of the groove 11 and an end of the projection part 16. In the waterproof structure of a case, the lower case 7 is provided with a first wall part 10 having the groove 11, the upper case 6 is provided with a second wall part 15 having the projection part 16, and a recess/projection engagement part 21 has an opposing surface, which is opposed to the second wall part 15, of first wall part 10 and is provided outside the groove 11 and projection part 16.

Description

本発明は、熱可塑性樹脂からなる上下ケースの接合面に抵抗発熱体を挟み込み、この抵抗発熱体に電圧を印可して発熱させることにより、接合面の樹脂を溶融して溶着するケースの防水構造に関するものである。   The present invention provides a waterproof structure for a case in which a resistance heating element is sandwiched between the joining surfaces of upper and lower cases made of thermoplastic resin, and a voltage is applied to the resistance heating element to generate heat, thereby melting and welding the resin on the joining surface. It is about.

従来、浴室リモコンなどのように、熱可塑性樹脂からなるケース内の防水性を向上させるために、前記ケースを構成する上下ケースの接合面に抵抗発熱体を挟み込み、この抵抗発熱体に電圧を印可して発熱させることにより、接合面の樹脂を溶融して溶着するケースの防水構造があった（特許文献１を参照）。   Conventionally, in order to improve waterproofness in a case made of thermoplastic resin, such as a bathroom remote controller, a resistance heating element is sandwiched between the joint surfaces of the upper and lower cases constituting the case, and a voltage is applied to the resistance heating element. Then, there was a waterproof structure of the case that melts and welds the resin on the joint surface by generating heat (see Patent Document 1).

特開２００４−３１７５１号公報JP 2004-31751 A

しかしながら、浴室リモコンなどは、浴室内に設置されるために、日常的に、石けんが付着したり、温水シャワーなどの温水を浴びる状況である。このため、前記ケースの接合面に水のみならず石けんが、浸入する場合があり、さらに、浸入した水や洗剤や石けんなどによって、前記ケースの接合面部分にひびが、発生する虞があった。   However, since a bathroom remote control or the like is installed in a bathroom, it is a situation where soap is attached daily or hot water such as a hot water shower is taken. For this reason, not only water but also soap may invade the joint surface of the case, and there is a possibility that cracks may occur in the joint surface portion of the case due to the infiltrated water, detergent, or soap. .

そこで、本発明は、前述した問題点に着目し、ケースの接合面への水や洗剤や石けんの浸入を抑制するケースの防水構造を提供するものである。   Accordingly, the present invention focuses on the above-described problems and provides a waterproof structure for a case that suppresses the intrusion of water, detergent, or soap into the joint surface of the case.

本発明は前記目的を達成するため、熱可塑性樹脂からなる下ケースと、前記下ケースの周縁に形成される環状の溝と、前記溝と連通するとともに電極が挿入されるように前記下ケースに形成される貫通孔と、前記貫通孔から一部が露出するように前記溝内に配設される発熱体と、熱可塑性樹脂からなる上ケースと、前記上ケースに形成され前記溝内に嵌る凸部とを備え、前記貫通孔内に前記電極を挿入し前記発熱体に通電して前記溝の底と前記凸部の端部とを溶着するケースの防水構造において、前記下ケースに前記溝を備えた第１壁部と、前記上ケースに前記凸部を備えた第２壁部と、を設け、前記第１壁部の前記第２の壁部との対向面でかつ前記溝と前記凸部との外側に凹凸嵌合部を設けたものである。   In order to achieve the above object, the present invention provides a lower case made of a thermoplastic resin, an annular groove formed in a peripheral edge of the lower case, and communicated with the groove so that an electrode is inserted into the lower case. A through hole to be formed, a heating element disposed in the groove so as to be partially exposed from the through hole, an upper case made of a thermoplastic resin, and formed in the upper case and fitted in the groove A waterproof structure of a case comprising a convex portion, wherein the electrode is inserted into the through hole, and the heating element is energized to weld the bottom of the groove and the end of the convex portion. And a second wall portion provided with the convex portion on the upper case, and a surface of the first wall portion facing the second wall portion and the groove and the second wall portion. A concave / convex fitting portion is provided outside the convex portion.

また、前記凹凸嵌合部は、前記下ケースの第１壁部の対向面に、前記上ケースの第２壁部の対向面側に突出した突出部と、前記上ケースの第２壁部の対向面に前記突出部が嵌る凹部と、からなるものである。   In addition, the concave and convex fitting portion includes a projecting portion projecting on the facing surface side of the second wall portion of the upper case on the facing surface of the first wall portion of the lower case and a second wall portion of the upper case. And a recess into which the protruding portion fits on the opposing surface.

本発明によれば、所期の目的を達成でき、ケースの接合面への水や洗剤や石けんの浸入を抑制するケースの防水構造を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the intended objective can be achieved and the waterproof structure of the case which suppresses permeation of water, a detergent, or soap to the joint surface of a case can be provided.

本発明の第１実施形態の正面図。The front view of 1st Embodiment of this invention. 同実施形態のカバーを外した状態の正面図。The front view of the state which removed the cover of the embodiment. 同実施形態の蓋体を外した状態の正面図。The front view of the state which removed the cover body of the embodiment. 同実施形態の下ケースの正面図。The front view of the lower case of the embodiment. 同実施形態の発熱体の正面図。The front view of the heat generating body of the embodiment. 図２中Ａ−Ａ線の断面図。Sectional drawing of the AA line in FIG. 図２中Ｂ−Ｂ線の断面図。Sectional drawing of the BB line in FIG. 本発明の第２実施形態の断面図。Sectional drawing of 2nd Embodiment of this invention. 同実施形態の断面図。Sectional drawing of the embodiment.

本発明の第１実施形態を浴室内に配置される風呂釜用のリモコン１を用いて説明する。リモコン１は、表示部２と、スイッチなどの操作部３と、これら表示部２と操作部３及び図示しない回路基板などを収納するケース４とを備えている。なお、本実施形態では、ケース４は、カバー５で覆われており、このカバー５は、表示部２と操作部３とケース４の一部が露出する開口５ａを備えている。   1st Embodiment of this invention is described using the remote control 1 for the bath pot arrange | positioned in a bathroom. The remote controller 1 includes a display unit 2, an operation unit 3 such as a switch, and a case 4 that stores the display unit 2, the operation unit 3, a circuit board (not shown), and the like. In this embodiment, the case 4 is covered with a cover 5, and the cover 5 includes an opening 5 a through which the display unit 2, the operation unit 3, and a part of the case 4 are exposed.

カバー５で覆われるケース４は、上下ケース６、７で構成されている。上下ケース６、７は、熱可塑性樹脂で形成されている。ケース４は、貫通した孔からなる取り付け孔８を備えており、この取り付け孔８によって、浴室などの壁面に固定される。   The case 4 covered with the cover 5 is composed of upper and lower cases 6 and 7. The upper and lower cases 6 and 7 are made of a thermoplastic resin. The case 4 is provided with a mounting hole 8 formed of a through-hole, and is fixed to a wall surface such as a bathroom by the mounting hole 8.

下ケース７は、底板９の周縁に第１壁部１０を備えている。この第１壁部１０は、切れ目なく環状に形成されている。この第１壁部１０には、溝１１が設けられている。この溝１１も第１壁部１０と同様に、切れ目なく環状に形成されている。第１壁部１０と溝１１は、各取り付け孔８を取り囲むように形成されている。特に、溝１１は、取り付け孔８より下ケース７の中心側を通るように設けられている。また、下ケース７には、貫通孔１２が設けられている。この貫通孔１２は、溝１１と連通しており、電極１３が、挿入されるものである。そして、この貫通孔１２から溝１１内に、水などが浸入しないように、貫通孔１２の図３中の上側に溝１１が、広がっており、貫通孔１２の図３中の下側の溝１１は、袋小路となっている。   The lower case 7 includes a first wall portion 10 on the periphery of the bottom plate 9. The first wall portion 10 is formed in an annular shape without a break. A groove 11 is provided in the first wall portion 10. Similar to the first wall portion 10, the groove 11 is also formed in an annular shape without a break. The first wall portion 10 and the groove 11 are formed so as to surround each attachment hole 8. In particular, the groove 11 is provided so as to pass through the center side of the lower case 7 from the attachment hole 8. The lower case 7 is provided with a through hole 12. This through-hole 12 is connected with the groove | channel 11, and the electrode 13 is inserted. Further, the groove 11 is spread above the through hole 12 in FIG. 3 so that water or the like does not enter the groove 11 from the through hole 12, and the groove below the through hole 12 in FIG. 11 is a dead end.

下ケース７の溝１１内には、２つの発熱体１７、１８が配設されている。２つの発熱体１７、１８は、針金状で、それぞれの端部が、貫通孔１２から露出している。そして、発熱体１７は、コの字形状であり、発熱体１８は、主要部がコの字形状で、その端部が、取り付け孔８より下ケース７の中心側を通り、取り付け孔８を取り囲み、発熱体１８の端部が、図３中の下側を向くように形成されている。   Two heating elements 17 and 18 are disposed in the groove 11 of the lower case 7. The two heating elements 17 and 18 are wire-like, and the respective end portions are exposed from the through hole 12. The heating element 17 is U-shaped, and the heating element 18 has a U-shaped main part, and its end portion passes through the center side of the lower case 7 from the mounting hole 8 and passes through the mounting hole 8. Surrounding, the edge part of the heat generating body 18 is formed so that it may face the lower side in FIG.

上ケース６は、表示部２や操作部３を備えた表板１４の周縁に第２壁部１５を備えている。この第２壁部１５は、切れ目なく環状に形成されている。この第２壁部１５には、凸部１６が設けられている。この凸部１６も第２壁部１５と同様に、切れ目なく環状に形成されている。この凸部１６は、溝１１内に嵌るものである。   The upper case 6 includes a second wall portion 15 on the periphery of the front plate 14 including the display unit 2 and the operation unit 3. The second wall portion 15 is formed in an annular shape without a break. A convex portion 16 is provided on the second wall portion 15. Similar to the second wall portion 15, the convex portion 16 is also formed in an annular shape without a break. The convex portion 16 is fitted in the groove 11.

上ケース６と下ケース７とは、発熱体１７、１８を配設した溝１１内に、凸部１６を嵌め込んだ状態で、貫通孔１２内に電極１３を挿入し、発熱体１７、１８に通電して上下ケース６、７の接合面を構成する溝１１の底と凸部１６の端部とを溶着するものである。   In the upper case 6 and the lower case 7, the electrode 13 is inserted into the through-hole 12 in a state in which the convex portion 16 is fitted in the groove 11 in which the heating elements 17 and 18 are disposed, and the heating elements 17 and 18 are inserted. The bottom of the groove 11 constituting the joint surface of the upper and lower cases 6 and 7 and the end of the convex portion 16 are welded.

また、下ケース７の第１壁部１０と上ケース６の第２の壁部１５との対向面１９、２０で、かつ溝１１と凸部１６との外側に凹凸嵌合部２１が、設けられている。   Further, an uneven fitting portion 21 is provided on the opposing surfaces 19 and 20 between the first wall portion 10 of the lower case 7 and the second wall portion 15 of the upper case 6 and outside the groove 11 and the convex portion 16. It has been.

凹凸嵌合部２１は、下ケース７の第１壁部１０の対向面１９に、上ケース６の第２壁部１５の対向面２０側に突出した突出部２２と、上ケース６の第２壁部１５の対向面２０に突出部２２が嵌る凹部２３と、からなるものである。   The concave / convex fitting portion 21 includes a projecting portion 22 projecting on the facing surface 20 side of the second wall portion 15 of the upper case 6 and a second surface of the upper case 6 on the facing surface 19 of the first wall portion 10 of the lower case 7. And a concave portion 23 into which the protruding portion 22 fits in the facing surface 20 of the wall portion 15.

突出部２２は、環状で切れ目なく形成されており、凹部２３も、突出部２２と同様に、環状で切れ目なく形成されている。このような凹凸嵌合部２１を設けたことによって、上下ケース６、７の対向面１９、２０の沿面距離を伸ばすことができ、上下ケース６、７の溝１１の底と凸部１６の端部とからなる接合面に水のみならず洗剤や石けんの浸入を防止することができ、ひいては、前記接合面部分でのひびの発生を防止することができる。   The projecting portion 22 is annular and formed without any breaks, and the recess 23 is also annular and formed without any breaks, as with the projecting portions 22. By providing such a concave-convex fitting portion 21, the creeping distance between the opposing surfaces 19, 20 of the upper and lower cases 6, 7 can be extended, and the bottom of the groove 11 and the end of the convex portion 16 of the upper and lower cases 6, 7 It is possible to prevent not only water but also detergent and soap from entering the joint surface composed of the joints, and thus the occurrence of cracks at the joint surface portion can be prevented.

なお、本実施形態では、突出部２２、凹部２３の断面形状は、矩形であったが、本実施形態に限定されるものではなく、例えば、図８、９で示す第２実施形態のように、凹凸嵌合部２４を構成する突出部２５、凹部２６の断面形状が、三角形であってもよい。本実施形態の形状であっても、上下ケース６、７の対向面１９、２０の沿面距離を伸ばすことができ、第１実施形態と同様の作用効果を得ることができる。   In the present embodiment, the cross-sectional shapes of the protrusions 22 and the recesses 23 are rectangular, but the present invention is not limited to this embodiment. For example, as in the second embodiment shown in FIGS. The cross-sectional shape of the protrusion 25 and the recess 26 constituting the concave / convex fitting portion 24 may be a triangle. Even if it is the shape of this embodiment, the creeping distance of the opposing surfaces 19 and 20 of the upper and lower cases 6 and 7 can be extended, and the same effect as 1st Embodiment can be acquired.

本発明は、熱可塑性樹脂からなる上下ケースの接合面に抵抗発熱体を挟み込み、この抵抗発熱体に電圧を印可して発熱させることにより、接合面の樹脂を溶融して溶着するケースにおいて、特に、防水が必要な箇所に配設されるケースに利用可能である。   In the case where the resistance heating element is sandwiched between the joining surfaces of the upper and lower cases made of thermoplastic resin, and the resin on the joining surface is melted and welded by applying a voltage to the resistance heating element to generate heat, It can be used for a case disposed in a place where waterproofing is required.

６ 上ケース
７ 下ケース
１０ 第１壁部
１１ 溝
１２ 貫通孔
１３ 電極
１５ 第２壁部
１６ 凸部
１７、１８ 発熱体
２１、２４ 凹凸嵌合部
２２、２５ 突出部
２３、２６ 凹部
6 Upper case 7 Lower case 10 1st wall part 11 Groove 12 Through-hole 13 Electrode 15 2nd wall part 16 Convex part 17, 18 Heating element 21, 24 Concavity and convexity fitting part 22, 25 Protrusion part 23, 26 Concave part

Claims (2)

熱可塑性樹脂からなる下ケースと、前記下ケースの周縁に形成される環状の溝と、前記溝と連通するとともに電極が挿入されるように前記下ケースに形成される貫通孔と、前記貫通孔から一部が露出するように前記溝内に配設される発熱体と、熱可塑性樹脂からなる上ケースと、前記上ケースに形成され前記溝内に嵌る凸部とを備え、前記貫通孔内に前記電極を挿入し前記発熱体に通電して前記溝の底と前記凸部の端部とを溶着するケースの防水構造において、前記下ケースに前記溝を備えた第１壁部と、前記上ケースに前記凸部を備えた第２壁部と、を設け、前記第１壁部の前記第２の壁部との対向面でかつ前記溝と前記凸部との外側に凹凸嵌合部を設けたことを特徴とするケースの防水構造。 A lower case made of a thermoplastic resin, an annular groove formed at a peripheral edge of the lower case, a through hole formed in the lower case so as to communicate with the groove and an electrode is inserted, and the through hole A heating element disposed in the groove so that a part thereof is exposed, an upper case made of a thermoplastic resin, and a convex portion formed in the upper case and fitted in the groove, In the waterproof structure of the case in which the electrode is inserted and the heating element is energized to weld the bottom of the groove and the end of the convex portion, the first wall portion provided with the groove in the lower case, A second wall portion provided with the convex portion on the upper case, and a concave-convex fitting portion on a surface facing the second wall portion of the first wall portion and outside the groove and the convex portion. A waterproof structure for the case, characterized in that 前記凹凸嵌合部は、前記下ケースの第１壁部の対向面に、前記上ケースの第２壁部の対向面側に突出した突出部と、前記上ケースの第２壁部の対向面に前記突出部が嵌る凹部と、からなることを特徴とする請求項１に記載のケースの防水構造。
The concave-convex fitting portion includes a projecting portion projecting on the facing surface side of the second wall portion of the upper case on the facing surface of the first wall portion of the lower case, and a facing surface of the second wall portion of the upper case. The waterproof structure for a case according to claim 1, further comprising: a concave portion into which the protruding portion is fitted.
JP2009152227A 2009-06-26 2009-06-26 Waterproof structure of case Pending JP2011009510A (en)

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JP2013062334A (en) * 2011-09-13 2013-04-04 Hitachi Automotive Systems Ltd Electronic control device
JP2013134023A (en) * 2011-12-27 2013-07-08 Rb Controls Co Remote controller for kitchen
JP2013208883A (en) * 2012-03-30 2013-10-10 Aisin Seiki Co Ltd Heat welding structure of sealed case
CN108307596A (en) * 2017-01-13 2018-07-20 光宝电子(广州)有限公司 Shell, the electronic module with the shell and its manufacturing method
WO2020213053A1 (en) * 2019-04-16 2020-10-22 三菱電機株式会社 Motor production method and motor

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JPH10119132A (en) * 1996-10-23 1998-05-12 Tohoku Munekata Kk Method for thermowelding molded article molded from thermoplastic resin and thermowelding molded article
JP3064180U (en) * 1999-05-24 1999-12-24 東北ムネカタ株式会社 Heating resistance heating element
JP2004031751A (en) * 2002-06-27 2004-01-29 Rb Controls Co Waterproofing structure of casing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0562125U (en) * 1992-01-27 1993-08-13 古河電気工業株式会社 Electrical junction box
JPH10119132A (en) * 1996-10-23 1998-05-12 Tohoku Munekata Kk Method for thermowelding molded article molded from thermoplastic resin and thermowelding molded article
JP3064180U (en) * 1999-05-24 1999-12-24 東北ムネカタ株式会社 Heating resistance heating element
JP2004031751A (en) * 2002-06-27 2004-01-29 Rb Controls Co Waterproofing structure of casing

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013062334A (en) * 2011-09-13 2013-04-04 Hitachi Automotive Systems Ltd Electronic control device
JP2013134023A (en) * 2011-12-27 2013-07-08 Rb Controls Co Remote controller for kitchen
JP2013208883A (en) * 2012-03-30 2013-10-10 Aisin Seiki Co Ltd Heat welding structure of sealed case
CN108307596A (en) * 2017-01-13 2018-07-20 光宝电子(广州)有限公司 Shell, the electronic module with the shell and its manufacturing method
TWI633826B (en) * 2017-01-13 2018-08-21 大陸商光寶電子（廣州）有限公司 Shell and electronic module with the shell and method for making the same
CN108307596B (en) * 2017-01-13 2020-07-03 光宝电子(广州)有限公司 Housing, electronic module having the same, and method of manufacturing the same
WO2020213053A1 (en) * 2019-04-16 2020-10-22 三菱電機株式会社 Motor production method and motor
JPWO2020213053A1 (en) * 2019-04-16 2021-09-13 三菱電機株式会社 Motor manufacturing method and motor

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