JP4184066B2 - Close contact structure between members - Google Patents

Close contact structure between members Download PDF

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Publication number
JP4184066B2
JP4184066B2 JP2002369411A JP2002369411A JP4184066B2 JP 4184066 B2 JP4184066 B2 JP 4184066B2 JP 2002369411 A JP2002369411 A JP 2002369411A JP 2002369411 A JP2002369411 A JP 2002369411A JP 4184066 B2 JP4184066 B2 JP 4184066B2
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Japan
Prior art keywords
packing
close contact
members
contact structure
case
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JP2004197882A (en
Inventor
亮 大塚
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Kenwood KK
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Kenwood KK
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Description

【発明の属する技術分野】
【０００１】
本発明は、密着構造に関し、例えば、防水性能に優れ、耐久性の高い部材間の密着構造に関する。
【０００２】
【従来の技術】
例えば、防水構造が必要な炊飯ジャー等ではケースとシャーシ間がパッキングを介して押圧嵌合される構造がコストや取り扱いの容易さから一般的に用いられている。
【０００３】
図３には、この種の部材間密着構造の基本的な構造が斜視図で示されている。図３において、ケース３００とシャーシ２００が嵌合されて密封構造を得ている。シャーシ２００の上部の外面周囲には凹部（パッキング溝）２１０が形成され、この凹部２１０に矩形断面または円形状断面等の弾性材料から成るパッキング１００が挿入、嵌合される。このとき、パッキング１００は、凹部２１０に密着して嵌合され、シャーシ２００の表面から若干突出するように構成されている。この突出部近傍は、スカート部と称され、ケース３００側内部と嵌合される。一方、ケース３００の上部には、シャーシ２００の側面から若干突出しているパッキング１００表面部が入り込む凹部３１０が形成されている。
【０００４】
パッキング１００は、シャーシ２００の凹部２１０に押圧嵌合された状態で、ケース３００の内部に押し込まれる。押し込まれた状態では、シャーシ２００とケース３００は比較的密接に嵌め合い嵌合され、更に、シャーシ２００の側面表面から若干突出しているパッキング１００が押圧されて、シャーシ２００とケース３００が密着嵌合され、防水機構が得られることになる。
【０００５】
図４（Ａ）には、シャーシ２００とケース１００が密着嵌合される直前におけるパッキング１００の近傍の側断面図が示されている。図４（Ａ）に示すように、シャーシ２００の下部２２０がケース３００の凹部３１０の内部に挿入される直前では、パッキング１００の表面がシャーシ２００の側面から若干突出している。更に、シャーシ２００をケース３００の内部に押し込むと、図４（Ｂ）に示すように、突出しているパッキング１００がケースの凹部３１０を経て内面に押圧されて密着状態となる。
【０００６】
かかる構成によれば、シャーシ２００とケース３００はパッキング１００を介して密着され、防水機能等を果たす密着構造が得られる。
【０００７】
【発明が解決しようとする課題】
上述した従来の部材間の密着構造は、簡単に防水性能をある程度満足する構造が得られるが、次のような問題点または課題を有する。
【０００８】
図５（Ａ）〜（Ｃ）には、従来の部材間の密着構造の問題点を説明するためのシャーシ２００とケース３００のパッキング１００を介しての嵌合部近傍の部分断面図が示されている。
【０００９】
図５（Ａ）には、シャーシ２００とケース３００がパッキング１００を介して密着嵌合されている断面図が示されている。このとき、パッキング１００のケース３００内部との接触面となるスカート部が、ケース３００の凹部３１０近傍と摩擦接触している。この状態から更にシャーシ２００をケース３００内に押し込むと、図５（Ｂ）に示すように、パッキング１００のケース３００内部との接触面となるスカート部が、ケース３００の凹部３１０表面近傍と摩擦接触して、パッキング１００が矢印Ａ方向に回転する、したがって、更にシャーシ２００を動かすと、図５（Ｃ）に示すようにパッキング１００がシャーシ２００の溝部から外れてしまう恐れがあった。この問題は、繰り返し使用した場合に顕著になる。
【００１０】
そこで、本発明の目的は、繰り返し利用した場合であってもパッキングが外れる恐れが少ない部材間の密着構造を提供することにある。
【００１１】
【課題を解決するための手段】
前述の課題を解決するため、本発明による部材間の密着構造は、次のような特徴的な構成を採用している。
【００１２】
（１）相互に嵌合される第１および第２の部材の少なくとも一方の部材の周方向に形成された凹部に配設されたパッキングを介して前記第１および第２の部材が密着嵌合される部材間の密着構造において、
前記凹部に配設されるパッキングは、前記一方の部材から前記他方の部材の嵌合面に向けて前記嵌合方向と逆の斜め方向へ延びる第１のスカート部および該第１のスカート部より嵌合方向側に設けられ前記一方の部材と嵌合する他方の部材の嵌合面と略直角に延びる第２のスカート部を有する部材間の密着構造。
【００１３】
（２）前記パッキングの前記第１のスカート部は、前記第２のスカート部よりも大きく前記他方の部材に向けて突出している上記（１）の部材間の密着構造。
【００１４】
（３）前記一方の部材に形成された前記凹部は第１の凹部と該第１の凹部よりも深い第２の凹部を有し、前記パッキングは前記第１及び第２の凹部に適合する形状を有する上記（１）または（２）の部材間の密着構造。
【００１５】
（４）前記第２の部材は前記第１の部材の内部に挿入され、前記パッキングは前記第２の部材の外周に前記第１及び第２のスカート部が前記第１の部材の内面に当接するように配設される上記（１）、（２）又は（３）の部材間の密着構造。
【００１６】
【発明の実施の形態】
以下、本発明による部材間の密着構造の好適実施形態例を添付図、特に図１を参照して詳細に説明する。
【００１７】
図１は本発明の一実施形態による部材間の密着構造の構造を示す要部断面図である。
【００１８】
本発明による部材間の密着構造の重要な特徴はパッキング構造にある。パッキング１は、その断面が図示のように、第1のスカート部１１と第２のスカート部１２から成る２段構造を有する。パッキング１は、シャーシ２の凹部２１内に挿入、嵌合される。
【００１９】
第1のスカート部１１は、第２のスカート部１２よりも突出しており、シャーシ２のケ−ス３との嵌合時にケース３の内面と高押圧状態で接触し、一義的な防水性等の密封構造を果たしている。第２のスカート部１２は、第1のスカート部１１よりも若干突出程度は低く、シャーシ２とケース３との嵌合時に、ケース３内面と若干弱い押圧状態接触するように設定される。
【００２０】
したがって、シャーシ２とケース３との嵌合によりパッキング１の第1のスカート部１１と第２のスカート部１２は、ケース３の内面と２段階で押圧接触することになり、２重の防水ライン（密封構造）が得られることになる。
【００２１】
この第２のスカート部１２は、シャーシ２をケース３に嵌合させる際または取り外す際のパッキングのケース内面との摩擦に起因するパッキング自体の回転を、ケース３内面との接触、当接により阻止する機能を果たしている。
【００２２】
また、シャーシ２の凹部２１内には更に深い凹部２２が形成されており、パッキング１もシャーシ２の凹部２２に形状的に嵌合するようなリブ部１３を有する。パッキング１の第２のスカート部１２のケース３内面への当接によって、シャーシ２のケース３への嵌合、取外し方向の移動に伴って生ずるパッキング１の回転を更に阻止することができる。
【００２３】
図２は、第２のスカート部１２によるパッキングの回転阻止の様子を説明するための要部断面図である。シャーシ２の凹部２１には、パッキング１が密着して当接している。例えば、図２に示すように、シャーシ２が矢印Ｂ方向に更に深く押し下げられると、摩擦力によりパッキング１は矢印Ｃ方向に回転しようとするが、第２のスカート部１２がケース３の内面部に当接してパッキング１の矢印Ｄ方向の回転による力を受け止めて回転を阻止する。また、その際、パッキング１のリブ部１３もシャーシ２の凹部２１の部位２１Ａ、２１Ｂに当接して、パッキング１の回転による力Ｃを受け止めて回転を阻止する。これら２つの相互作用により、シャーシ２とケース３間の相互移動による摩擦に起因するパッキング１の回転を受け止めて阻止することができる。
【００２４】
パッキング１の第１のスカート部１１と第２のスカート部１２のケース３内壁（内面）とのオーバーラップ量は、それぞれ０．４ｍｍと０．１ｍｍ程度に設定すると好適であることを実験的に確認した。
【００２５】
以上、本発明による部材間の密着構造の好適実施形態例を説明したが、これは単なる例示にすぎず、特定用途に応じて種々の変形変更が可能であること勿論である。
【００２６】
【発明の効果】
上述の如く、本発明の部材間の密着構造によれば以下のような顕著な効果が得られる。すなわち、本発明では、突出量が異なる２つのスカート部が嵌合相手の嵌合面と嵌合して２重の防水ラインの密封構造を得ると共に、部材間嵌合時または取外し時のパッキングのケース内面との摩擦に起因するパッキング自体の回転を阻止してパッキングの外れを防止できる。このパッキング自体の回転は、また、パッキングが保持される凹部内に更に深い凹部を形成し、この凹部形状に適合したパッキングを形成することにより更に効率的に阻止される。
【図面の簡単な説明】
【図１】本発明の一実施形態による部材間の密着構造の構造を示す要部断面図である。
【図２】図１に示す本発明の実施形態における第２のスカート部１２によるパッキングの回転阻止の様子を説明するための要部断面図である。
【図３】従来の部材間の密着構造の基本的構造を示す斜視図である。
【図４】従来の部材間の密着構造におけるシャーシ２００とケース１００が密着嵌合される直前におけるパッキング１００の近傍の側断面図である。
【図５】従来の部材間の密着構造の問題点を説明するためのシャーシ２００とケース３００のパッキング１００を介しての嵌合部近傍を示す部分断面図である。
【符号の説明】
１ パッキング
２ シャーシ
３ ケース
１１ 第1のスカート部
１２ 第２のスカート部
２１、２２ 凹部
２１Ａ、２１Ｂ 凹部２１の部位
３００ ケース
３１０ ケース３００の内面部BACKGROUND OF THE INVENTION
[0001]
The present invention relates to a close contact structure, for example, a close contact structure between members having excellent waterproof performance and high durability.
[0002]
[Prior art]
For example, in a rice cooker or the like that requires a waterproof structure, a structure in which a case and a chassis are press-fitted through a packing is generally used because of cost and ease of handling.
[0003]
FIG. 3 is a perspective view showing the basic structure of this type of inter-member contact structure. In FIG. 3, a case 300 and a chassis 200 are fitted to obtain a sealed structure. A recess (packing groove) 210 is formed around the outer surface of the upper portion of the chassis 200, and the packing 100 made of an elastic material having a rectangular cross section or a circular cross section is inserted into and fitted into the recess 210. At this time, the packing 100 is closely fitted into the recess 210 and is configured to slightly protrude from the surface of the chassis 200. The vicinity of the protruding portion is referred to as a skirt portion and is fitted into the case 300 side inside. On the other hand, a recess 310 is formed in the upper portion of the case 300 and into which the surface of the packing 100 slightly protruding from the side surface of the chassis 200 enters.
[0004]
The packing 100 is pushed into the case 300 while being pressed into the recess 210 of the chassis 200. In the pushed-in state, the chassis 200 and the case 300 are relatively closely fitted and fitted, and the packing 100 slightly protruding from the side surface of the chassis 200 is pressed, so that the chassis 200 and the case 300 are closely fitted. Thus, a waterproof mechanism is obtained.
[0005]
FIG. 4A shows a side sectional view of the vicinity of the packing 100 just before the chassis 200 and the case 100 are closely fitted. As shown in FIG. 4A, the surface of the packing 100 slightly protrudes from the side surface of the chassis 200 immediately before the lower part 220 of the chassis 200 is inserted into the recess 310 of the case 300. Further, when the chassis 200 is pushed into the case 300, as shown in FIG. 4 (B), the protruding packing 100 is pressed against the inner surface through the recess 310 of the case to be in a close contact state.
[0006]
According to such a configuration, the chassis 200 and the case 300 are brought into close contact with each other via the packing 100, and a close contact structure that performs a waterproof function or the like is obtained.
[0007]
[Problems to be solved by the invention]
The above-described conventional close contact structure between members can easily obtain a structure that satisfies waterproof performance to some extent, but has the following problems or issues.
[0008]
FIGS. 5A to 5C are partial cross-sectional views in the vicinity of the fitting portion through the packing 100 of the chassis 200 and the case 300 for explaining the problems of the close contact structure between the conventional members. ing.
[0009]
FIG. 5A shows a cross-sectional view in which the chassis 200 and the case 300 are closely fitted via the packing 100. At this time, the skirt part which becomes a contact surface with the case 300 inside of the packing 100 is in frictional contact with the vicinity of the recess 310 of the case 300. When the chassis 200 is further pushed into the case 300 from this state, as shown in FIG. 5B, the skirt portion that is a contact surface with the inside of the case 300 of the packing 100 is in frictional contact with the vicinity of the surface of the recess 310 of the case 300. Then, the packing 100 rotates in the direction of arrow A. Therefore, when the chassis 200 is further moved, the packing 100 may be detached from the groove portion of the chassis 200 as shown in FIG. This problem becomes prominent when used repeatedly.
[0010]
Therefore, an object of the present invention is to provide a close contact structure between members that is less likely to come off the packing even when repeatedly used.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the following structure is adopted for the close contact structure between members according to the present invention.
[0012]
(1) mutually fitting first and second at least one of the circumferentially-formed recesses arranged by packing the first and second members are in close contact engagement over the members of the member is engaged In the close contact structure between the members to be
The packing disposed in the recess includes a first skirt portion extending from the one member toward the fitting surface of the other member in an oblique direction opposite to the fitting direction, and the first skirt portion. A close contact structure between members having a second skirt portion provided on a fitting direction side and extending substantially perpendicular to a fitting surface of the other member fitted to the one member .
[0013]
(2) The close contact structure between the members of (1), wherein the first skirt portion of the packing is larger than the second skirt portion and protrudes toward the other member .
[0014]
(3) The concave portion formed in the one member has a first concave portion and a second concave portion deeper than the first concave portion, and the packing is shaped to fit the first and second concave portions. The close_contact | adherence structure between the members of said (1) or (2) which has these .
[0015]
(4) the second member is inserted into the interior of said first member, said packing against the internal surface of said first and second skirt portions the first member to the outer periphery of said second member The close contact structure between the members of (1), (2), or (3) disposed so as to be in contact with each other .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a close contact structure between members according to the present invention will be described in detail with reference to the accompanying drawings, particularly FIG.
[0017]
FIG. 1 is a cross-sectional view of a main part showing a structure of a close contact structure between members according to an embodiment of the present invention.
[0018]
An important feature of the close contact structure between members according to the present invention is the packing structure. The packing 1 has a two-stage structure consisting of a first skirt portion 11 and a second skirt portion 12 as shown in the cross section. The packing 1 is inserted and fitted into the recess 21 of the chassis 2.
[0019]
The first skirt portion 11 protrudes from the second skirt portion 12 and comes into contact with the inner surface of the case 3 in a highly pressed state when fitted to the case 3 of the chassis 2, so that it has a unique waterproof property. Plays a sealed structure. The second skirt portion 12 is slightly lower than the first skirt portion 11 and is set so as to come into contact with the inner surface of the case 3 in a slightly weak pressing state when the chassis 2 and the case 3 are fitted.
[0020]
Therefore, the first skirt portion 11 and the second skirt portion 12 of the packing 1 are pressed into contact with the inner surface of the case 3 in two stages due to the fitting between the chassis 2 and the case 3, so that the double waterproof line (Sealed structure) is obtained.
[0021]
The second skirt portion 12 prevents rotation of the packing itself caused by friction with the case inner surface of the packing when the chassis 2 is fitted to or removed from the case 3 by contact and contact with the inner surface of the case 3. Plays a function.
[0022]
Further, a deeper recess 22 is formed in the recess 21 of the chassis 2, and the packing 1 also has a rib portion 13 that fits into the recess 22 of the chassis 2 in shape. The contact of the second skirt portion 12 of the packing 1 with the inner surface of the case 3 can further prevent the rotation of the packing 1 caused by the fitting of the chassis 2 to the case 3 and the movement in the removal direction.
[0023]
FIG. 2 is a cross-sectional view of the main part for explaining the state of the packing rotation prevention by the second skirt portion 12. The packing 1 is in close contact with the recess 21 of the chassis 2. For example, as shown in FIG. 2, when the chassis 2 is further pushed down in the direction of the arrow B, the packing 1 tries to rotate in the direction of the arrow C due to the frictional force, but the second skirt 12 is the inner surface of the case 3. To prevent the rotation by receiving the force due to the rotation of the packing 1 in the direction of arrow D. At this time, the rib portion 13 of the packing 1 also abuts against the portions 21A and 21B of the recess 21 of the chassis 2 to receive the force C due to the rotation of the packing 1 and prevent the rotation. By these two interactions, the rotation of the packing 1 caused by the friction caused by the mutual movement between the chassis 2 and the case 3 can be received and prevented.
[0024]
Experimentally, it is preferable to set the overlap amounts of the first skirt portion 11 of the packing 1 and the inner wall (inner surface) of the second skirt portion 12 to about 0.4 mm and 0.1 mm, respectively. confirmed.
[0025]
The preferred embodiment of the close contact structure between members according to the present invention has been described above. However, this is merely an example, and it is needless to say that various modifications can be made according to a specific application.
[0026]
【The invention's effect】
As described above, according to the close contact structure between members of the present invention, the following remarkable effects can be obtained. That is, in the present invention, two skirt portions having different protrusion amounts are fitted to the fitting surface of the mating mating member to obtain a double waterproof line sealing structure, and packing at the time of fitting or removing between members is performed. It is possible to prevent the packing from coming off by preventing rotation of the packing itself due to friction with the inner surface of the case. The rotation of the packing itself is also prevented more efficiently by forming a deeper recess in the recess in which the packing is held and forming a packing that conforms to the recess shape.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part showing a structure of a close contact structure between members according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part for explaining the state of packing rotation prevention by a second skirt portion 12 in the embodiment of the present invention shown in FIG. 1;
FIG. 3 is a perspective view showing a basic structure of a conventional close contact structure between members.
FIG. 4 is a side cross-sectional view of the vicinity of the packing 100 just before the chassis 200 and the case 100 are in close contact with each other in the conventional close contact structure between members.
FIG. 5 is a partial cross-sectional view showing the vicinity of a fitting portion through a packing 100 of a chassis 200 and a case 300 for explaining a problem of a close contact structure between conventional members.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Packing 2 Chassis 3 Case 11 1st skirt part 12 2nd skirt parts 21 and 22 Recessed parts 21A and 21B Part of recessed part 21 Case 310 Inner surface part of case 300

Claims (4)

相互に嵌合される第１および第２の部材の少なくとも一方の部材の周方向に形成された凹部に配設されたパッキングを介して前記第１および第２の部材が密着嵌合される部材間の密着構造において、
前記凹部に配設されるパッキングは、前記一方の部材から前記他方の部材の嵌合面に向けて前記嵌合方向と逆の斜め方向へ延びる第１のスカート部および該第１のスカート部より嵌合方向側に設けられ前記一方の部材と嵌合する他方の部材の嵌合面と略直角に延びる第２のスカート部を有することを特徴とする部材間の密着構造。First and second at least one member which circumferentially formed through said arranged by packing into the recess first and second members are fitted contact member of members are fitted to each other In the close contact structure between
The packing disposed in the recess includes a first skirt portion extending from the one member toward the fitting surface of the other member in an oblique direction opposite to the fitting direction, and the first skirt portion. A close contact structure between members having a second skirt portion provided on a fitting direction side and extending substantially perpendicular to a fitting surface of the other member fitted to the one member . 前記パッキングの前記第１のスカート部は、前記第２のスカート部よりも大きく前記他方の部材に向けて突出していることを特徴とする請求項１に記載の部材間の密着構造。 2. The close contact structure between members according to claim 1, wherein the first skirt portion of the packing is larger than the second skirt portion and protrudes toward the other member . 前記一方の部材に形成された前記凹部は第１の凹部と該第１の凹部よりも深い第２の凹部を有し、前記パッキングは前記第１及び第２の凹部に適合する形状を有することを特徴とする請求項１または２に記載の部材間の密着構造。 The concave portion formed in the one member has a first concave portion and a second concave portion deeper than the first concave portion, and the packing has a shape adapted to the first and second concave portions. The close contact structure between members according to claim 1 or 2. 前記第２の部材は前記第１の部材の内部に挿入され、前記パッキングは前記第２の部材の外周に前記第１及び第２のスカート部が前記第１の部材の内面に当接するように配設されることを特徴とする請求項１、２又は３に記載の部材間の密着構造。 The second member is inserted into the first member, and the packing is arranged such that the first and second skirt portions are in contact with the inner surface of the first member on the outer periphery of the second member. The contact structure between members according to claim 1 , wherein the contact structure is disposed .
JP2002369411A 2002-12-20 2002-12-20 Close contact structure between members Expired - Fee Related JP4184066B2 (en)

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JP2008167890A (en) * 2007-01-11 2008-07-24 Mitsubishi Electric Corp Rice cooker
JP5206438B2 (en) * 2009-01-16 2013-06-12 株式会社Ｊｖｃケンウッド Waterproof structure of the housing
JP5480043B2 (en) 2010-07-08 2014-04-23 株式会社東海理化電機製作所 Portable machine
KR101223759B1 (en) * 2012-02-24 2013-01-17 주식회사 보루인터내셔날 Rubber seal for a vacuum receptacle and lid for the receptacle utilizing the same
KR101207798B1 (en) * 2012-05-21 2012-12-04 정영국 Airtight container
KR101395317B1 (en) 2012-07-31 2014-05-16 주식회사 보루인터내셔날 Rubber seal for a vacuum receptacle and lid for the receptacle utilizing the same
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KR102083111B1 (en) 2018-08-20 2020-02-28 박현진 Packing Structure

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