JPH0629077A - Plug cap structure - Google Patents
Plug cap structureInfo
- Publication number
- JPH0629077A JPH0629077A JP18346592A JP18346592A JPH0629077A JP H0629077 A JPH0629077 A JP H0629077A JP 18346592 A JP18346592 A JP 18346592A JP 18346592 A JP18346592 A JP 18346592A JP H0629077 A JPH0629077 A JP H0629077A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- cap
- tip
- body cord
- taper portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Spark Plugs (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エンジンのプラグホー
ルにスムーズに且つ防水カバーのゴム栓部の捲れ上がり
なく挿入できるプラグキャップ構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug cap structure which can be smoothly inserted into a plug hole of an engine without curling up a rubber plug portion of a waterproof cover.
【０００２】[0002]
【従来の技術】図７は、実開昭６１−６１７７８号公報
に記載された従来のプラグキャップ構造を示すものであ
る。このプラグキャップ構造は、点火プラグ接続用の高
圧電線２０を挿通する筒状の合成樹脂製ボディコードキ
ャップ２１と、同じく該ボディコードキャップ２１の終
端部に被着させるゴム製の防水カバー２２と、該ボディ
コードキャップ２１の先端部に嵌着させるプラグ側キャ
ップ２３とにより構成される。2. Description of the Related Art FIG. 7 shows a conventional plug cap structure disclosed in Japanese Utility Model Laid-Open No. 61-61778. This plug cap structure includes a cylindrical synthetic resin body cord cap 21 through which a high voltage electric wire 20 for connecting an ignition plug is inserted, and a rubber waterproof cover 22 that is also attached to the end of the body cord cap 21. It is composed of a plug-side cap 23 fitted to the tip of the body cord cap 21.
【０００３】該防水カバー２２には、プラグホール２４
内に嵌入させるゴム栓部２５を一体に形成してあり、ボ
ディコードキャップ２１をプラグホール２４内に挿入し
て点火プラグ２６に接続させると同時に該ゴム栓部２５
をプラグホール２４の開口に嵌入して防水を図るのであ
る。A plug hole 24 is formed in the waterproof cover 22.
A rubber plug portion 25 to be fitted therein is integrally formed, and the body cord cap 21 is inserted into the plug hole 24 to be connected to the ignition plug 26 and at the same time the rubber plug portion 25 is inserted.
Is fitted into the opening of the plug hole 24 for waterproofing.
【０００４】しかしながら、上記構造にあっては、ボデ
ィコードキャップ２１をプラグホール２４内に斜めに挿
入した場合に、ゴム栓部２５の先端２５ａが開口端縁２
７に当接して、点火プラグ２６の接続をスムーズに行え
ないという欠点があった。However, in the above structure, when the body cord cap 21 is obliquely inserted into the plug hole 24, the tip 25a of the rubber plug portion 25 has the opening end 2a.
However, there is a drawback in that the spark plug 26 cannot be connected smoothly due to contact with the No. 7 connector.
【０００５】そこで、図８に示す如く、ゴム栓部２８の
先端にテーパ面取りを施して挿入用テーパ部２９を形成
させたものがある。しかしながら、この構造にあって
は、挿入用テーパ部２９の先端２９ａが前記プラグホー
ル２４の開口端縁２７に当接した場合に捲れ上がり易
く、挿入性が充分であるとは言えなかった。Therefore, as shown in FIG. 8, there is one in which the tip of the rubber plug portion 28 is chamfered to form an insertion taper portion 29. However, in this structure, when the tip end 29a of the insertion taper portion 29 comes into contact with the opening end edge 27 of the plug hole 24, it is likely to be rolled up, and it cannot be said that the insertability is sufficient.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、上記した点
に鑑み、挿入用テーパ部の捲れ上がりを起こすことなく
スムーズにプラグホール内に挿入可能なプラグキャップ
構造を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a plug cap structure which can be smoothly inserted into a plug hole without causing the insertion taper part to be rolled up. .
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、プラグホール内に挿入するプラグ接続用
の筒状のボディコードキャップに設けられる防水カバー
のゴム栓部の先端に、該プラグホールの開口縁に対する
挿入用テーパ部を設けたプラグコードキャップにおい
て、該挿入用テーパ部に近接して該ボディコードキャッ
プに、該挿入用テーパ部の先端よりも外側に突出した傾
斜状の案内用突出部を設けたことを特徴とする。In order to achieve the above object, the present invention provides a tip of a rubber plug portion of a waterproof cover provided on a tubular body cord cap for plug connection which is inserted into a plug hole. A plug cord cap provided with an insertion taper portion for the opening edge of the plug hole, wherein the body cord cap has a slanted shape protruding outward from the tip of the insertion taper portion in the vicinity of the insertion taper portion. It is characterized in that a guiding protrusion is provided.
【０００８】[0008]
【作用】プラグホール内にボディコードキャップを挿入
する際に、開口端縁に先ず傾斜状の案内用突出部が摺接
し、次いで挿入用テーパ部の中間部が連続的に摺接す
る。すなわち案内用突出部が挿入用テーパ部に近接し且
つ該挿入用テーパ部の先端よりも外方向に突出して設け
られているために、挿入用テーパ部の先端が開口端縁に
当接することがない。When the body cord cap is inserted into the plug hole, the slanted guide projection is first brought into sliding contact with the opening edge, and then the intermediate portion of the insertion taper portion is continuously brought into sliding contact. That is, since the guide projection is provided close to the insertion taper portion and projects outward from the tip of the insertion taper portion, the tip of the insertion taper portion may come into contact with the opening edge. Absent.
【０００９】[0009]
【実施例】図１〜２は、本発明に係るプラグキャップ構
造の一実施例を示すものである。このプラグキャップ構
造は、従来同様に、点火プラグ接続用の高圧電線１を挿
通する筒状の合成樹脂製ボディコードキャップ２と、該
ボディコードキャップ２の終端部（上端部）に被着させ
るゴム栓部３を有する防水カバー４とを具備し、該ゴム
栓部３の先端には挿入用テーパ部５を設け、さらに、該
ボディコードキャップ２の終端部外周に、該挿入用テー
パ部５に近接して環状且つテーパ状の案内用突出部６を
一体に設けたものである。1 and 2 show an embodiment of a plug cap structure according to the present invention. This plug cap structure has a cylindrical body cord cap 2 made of synthetic resin, through which the high-voltage electric wire 1 for connecting an ignition plug is inserted, and a rubber to be attached to the terminal end (upper end) of the body cord cap 2 as in the conventional case. A waterproof cover 4 having a plug portion 3 is provided, an insertion taper portion 5 is provided at the tip of the rubber plug portion 3, and the insertion taper portion 5 is provided on the outer periphery of the end portion of the body cord cap 2. An annular and tapered guide protrusion 6 is integrally provided in the vicinity.
【００１０】該案内用突出部６は、図１の円内に拡大図
を示す如く、挿入用テーパ部５の先端５ａとの間に若干
の隙間を存して近接し且つ該挿入用テーパ部５の先端５
ａよりも案内用突出部６の頂部６ａをやや外側に突出し
て設けられる。すなわち案内用突出部６の終端部径Ｄ1
を挿入用テーパ部５の先端部径Ｄ2 よりも大きく且つ該
挿入用テーパ部５の終端部径Ｄ3 よりも小さく設定す
る。As shown in an enlarged view in the circle of FIG. 1, the guide projection 6 is close to the tip 5a of the insertion taper portion 5 with a slight gap, and the insertion taper portion 5 is provided. Tip 5
The apex 6a of the guiding protrusion 6 is provided so as to protrude slightly outward from a. That is, the end diameter D 1 of the guide protrusion 6
Is set to be larger than the tip end diameter D 2 of the insertion taper portion 5 and smaller than the end end diameter D 3 of the insertion taper portion 5.
【００１１】それによって、ボディコードキャップ２を
プラグホール７内に挿入する際に、プラグホール７の開
口端縁８に先ず剛体である案内用突出部６が摺接し、次
いでゴム体である挿入用テーパ部５の先端５ａを当接さ
せることなく該テーパ部５のテーパ面が連続的に摺接し
て、スムーズで且つ該テーパ部５の捲れ上がりを防いだ
挿入が可能となる。As a result, when the body cord cap 2 is inserted into the plug hole 7, the guide projection 6 which is a rigid body first comes into sliding contact with the opening edge 8 of the plug hole 7, and then the insertion portion which is a rubber body. The tapered surface of the tapered portion 5 continuously slides without contacting the tip 5a of the tapered portion 5, so that the insertion can be smoothly performed while preventing the tapered portion 5 from rolling up.
【００１２】該案内用突出部６の断面形状は、図３(a)
、(b) に示す如く、リング状であっても、また軸方向
に複数の溝９を設けた凹凸状であっても構わない。ま
た、図４に示すように、湾曲した傾斜部１０を有する断
面半円形で且つ環状の案内用突出部１１を設けることも
よい。The cross-sectional shape of the guide protrusion 6 is shown in FIG.
, (B), it may have a ring shape or an uneven shape having a plurality of grooves 9 provided in the axial direction. Further, as shown in FIG. 4, it is also possible to provide an annular guiding protrusion 11 having a semi-circular cross section having a curved inclined portion 10.
【００１３】あるいは、図５に示すように、ボディコー
ドキャップ２の先端部すなわちプラグ側キャップ１２の
上方からテーパ部１３を立ち上げて案内用突出部（リブ
でも可）１４を防水カバー４のゴム栓部３の直近まで延
設してもよい。この場合、該突出部１４の終端部径Ｄ1
がゴム栓３のテーパ部先端径Ｄ2 よりもやや大きいこと
は言うまでもない。Alternatively, as shown in FIG. 5, the taper portion 13 is raised from the tip of the body cord cap 2, that is, from above the plug-side cap 12, and the guide projection (or a rib) 14 is attached to the rubber of the waterproof cover 4. You may extend to the vicinity of the stopper part 3. In this case, the end diameter D 1 of the protrusion 14
Needless to say, is slightly larger than the tip end diameter D 2 of the rubber plug 3.
【００１４】さらに、図６に示すように、ゴム栓部３の
直近にテーパ突起状の案内用突出部１５を設けてもよ
い。該突出部１５は円周上数箇所に設ければより効果的
である。また、上記した種々の案内用突出部６，１０，
１４，１５は、ボディコードキャップ２とは別体に設け
てもよい（図示せず）。その材料としては硬めのゴムリ
ング等が最適である。Further, as shown in FIG. 6, a guide projection 15 having a tapered projection shape may be provided in the immediate vicinity of the rubber plug 3. It is more effective if the protrusions 15 are provided at several places on the circumference. In addition, the various guide protrusions 6, 10, and
14 and 15 may be provided separately from the body cord cap 2 (not shown). The most suitable material is a hard rubber ring.
【００１５】[0015]
【発明の効果】以上の如くに、本発明によれば、ボディ
コードキャップをプラグホール内に挿入する際に、剛性
の案内用突出部がホール開口縁に摺接して該開口縁とゴ
ム栓部先端との干渉を防止するから、ゴム栓部の捲れ上
がりがなく防水性が良好に確保される。さらに該案内用
突出部に次いでゴム栓部先端の挿入用テーパ部が連続し
て開口縁に摺接するから、ゴム栓のスムーズな装着が可
能となる。As described above, according to the present invention, when the body cord cap is inserted into the plug hole, the rigid guide projection is brought into sliding contact with the opening edge of the hole and the rubber plug portion. Since the interference with the tip is prevented, the rubber stopper does not curl up and good waterproofness is secured. Further, the insertion taper portion at the tip of the rubber plug portion is continuously slidably contacted with the opening edge next to the guide projection portion, so that the rubber plug can be smoothly mounted.
【図１】本発明に係るプラグキャップ構造の一実施例を
示す正面図（プラグホール内に挿入する状態を示し、ホ
ール側のみ断面図で示すもの）である。FIG. 1 is a front view showing an embodiment of a plug cap structure according to the present invention (showing a state of being inserted into a plug hole and showing only the hole side in a sectional view).
【図２】同じくプラグキャップ構造を示す縦断面図であ
る。FIG. 2 is a vertical sectional view showing a plug cap structure of the same.
【図３】図２のＡ−Ａ断面図であり、(a) は本例、(b)
は類似例を示す。3 is a cross-sectional view taken along the line AA of FIG. 2, (a) is this example, (b)
Shows a similar example.
【図４】同じくプラグキャップ構造の類似例を示す縦断
面図である。FIG. 4 is a vertical sectional view showing a similar example of the plug cap structure.
【図５】プラグキャップ構造の他の実施例を示す縦断面
図である。FIG. 5 is a vertical sectional view showing another embodiment of the plug cap structure.
【図６】その他の実施例を示す斜視図である。FIG. 6 is a perspective view showing another embodiment.
【図７】一従来例を示す縦断面図である。FIG. 7 is a vertical sectional view showing a conventional example.
【図８】他の従来例を示す縦断面図である。FIG. 8 is a vertical cross-sectional view showing another conventional example.
２ ボディコードキャップ ３ ゴム栓部 ４ 防水カバー ５ 挿入用テーパ部 ５ａ 先端 ６，１１，１４，１５ 案内用突出部 ７ プラグホール ８ 開口縁 2 Body cord cap 3 Rubber plug part 4 Waterproof cover 5 Tapered part for insertion 5a Tip 6, 11, 14, 15 Guide protrusion 7 Plug hole 8 Opening edge
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三谷 哲也 静岡県裾野市御宿1500 矢崎総業株式会社 内 (72)発明者 佐藤 孝 静岡県裾野市御宿1500 矢崎総業株式会社 内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Mitani 1500, Onjuku, Susono, Shizuoka Prefecture, Yazaki Sogyo Co., Ltd. (72) Inventor, Takashi Sato, 1500, Onjuku, Susono, Shizuoka
Claims (1)
の筒状のボディコードキャップに設けられる防水カバー
のゴム栓部の先端に、該プラグホールの開口縁に対する
挿入用テーパ部を設けたプラグキャップ構造において、
該挿入用テーパ部に近接して該ボディコードキャップ
に、該挿入用テーパ部の先端よりも外側に突出した傾斜
状の案内用突出部を設けたことを特徴とするプラグキャ
ップ構造。1. A plug cap in which a taper portion for insertion with respect to an opening edge of the plug hole is provided at a tip of a rubber plug portion of a waterproof cover provided in a tubular body cord cap for connecting a plug to be inserted into the plug hole. In structure,
A plug cap structure characterized in that an inclined guide protrusion protruding outward from the tip of the insertion taper portion is provided in the body cord cap in the vicinity of the insertion taper portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04183465A JP3085426B2 (en) | 1992-07-10 | 1992-07-10 | Plug cap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04183465A JP3085426B2 (en) | 1992-07-10 | 1992-07-10 | Plug cap structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0629077A true JPH0629077A (en) | 1994-02-04 |
| JP3085426B2 JP3085426B2 (en) | 2000-09-11 |
Family
ID=16136267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04183465A Expired - Fee Related JP3085426B2 (en) | 1992-07-10 | 1992-07-10 | Plug cap structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3085426B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU686351B2 (en) * | 1994-06-09 | 1998-02-05 | Ernley Oswald Pereira | Sandshield spark plug |
-
1992
- 1992-07-10 JP JP04183465A patent/JP3085426B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU686351B2 (en) * | 1994-06-09 | 1998-02-05 | Ernley Oswald Pereira | Sandshield spark plug |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3085426B2 (en) | 2000-09-11 |
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