JPH0254970U - - Google Patents

Info

Publication number
JPH0254970U
JPH0254970U JP1988133427U JP13342788U JPH0254970U JP H0254970 U JPH0254970 U JP H0254970U JP 1988133427 U JP1988133427 U JP 1988133427U JP 13342788 U JP13342788 U JP 13342788U JP H0254970 U JPH0254970 U JP H0254970U
Authority
JP
Japan
Prior art keywords
piston
sealing device
convex portion
sub
bearing 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
Application number
JP1988133427U
Other languages
Japanese (ja)
Other versions
JPH0642141Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988133427U priority Critical patent/JPH0642141Y2/en
Publication of JPH0254970U publication Critical patent/JPH0254970U/ja
Application granted granted Critical
Publication of JPH0642141Y2 publication Critical patent/JPH0642141Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sealing With Elastic Sealing Lips (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す一部切欠いた
断面図、第２図は第１図の一部を拡大した断面図
、第３図および第４図はそれぞれ他の実施例を示
す要部拡大断面図、第５図は従来の密封装置の一
例を示す一部切欠いた断面図、第６図は第５図の
一部を拡大した断面図である。 １……樹脂リング、２……軸受部、３……リツ
プ部、４，５，６……喰い込み部、７……ピスト
ン、８……環状凹凸、８ａ……凸部、８ｂ……凹
部、９……環状溝、１０……陥没孔、１１……多
孔板。 Fig. 1 is a partially cutaway sectional view showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view of a part of Fig. 1, and Figs. 3 and 4 each show other embodiments. FIG. 5 is a partially cutaway sectional view showing an example of a conventional sealing device, and FIG. 6 is an enlarged sectional view of a part of FIG. 5. DESCRIPTION OF SYMBOLS 1... Resin ring, 2... Bearing part, 3... Lip part, 4, 5, 6... Biting part, 7... Piston, 8... Annular unevenness, 8a... Convex part, 8b... Concave part , 9... Annular groove, 10... Sinkhole, 11... Perforated plate.

Claims (1)

【実用新案登録請求の範囲】 １ 筒状の軸受部２と、該軸受部２の一端に形成
され径方向外側へ拡開したリツプ部３とからなる
樹脂リング１の前記軸受部２の内周を、ピストン
７の外周面に形成された環状凹凸８に圧着係合し
た密封装置において、ピストン７の環状凹凸８の
うちの凸部８ａと、該凸部８ａに対応する軸受部
２の内周に、副係合部を設けたことを特徴とする
密封装置。 ２ 副係合部は、ピストン７の前記凸部８ａに形
成した所要数の小さな環状溝９と、該環状溝９へ
の軸受部２の喰い込み部５とからなることを特徴
とする請求項１に記載の密封装置。 ３ 副係合部は、ピストン７の前記凸部８ａに多
数形成した陥没孔１０と、該陥没孔１０への軸受
部２の喰い込み部６とからなることを特徴とする
請求項１に記載の密封装置。 ４ 副係合部は、ピストン７の前記凸部８ａと該
凸部８ａに対応する軸受部２の内周との間に圧着
した多孔板１１であることを特徴とする請求項１
に記載の密封装置。[Claims for Utility Model Registration] 1. The inner periphery of the bearing portion 2 of a resin ring 1 consisting of a cylindrical bearing portion 2 and a lip portion 3 formed at one end of the bearing portion 2 and expanding outward in the radial direction. In a sealing device that is press-fitted to an annular unevenness 8 formed on the outer circumferential surface of the piston 7, a convex portion 8a of the annular concavo-convex portion 8 of the piston 7 and an inner circumference of the bearing portion 2 corresponding to the convex portion 8a. A sealing device characterized in that a sub-engaging portion is provided. 2. Claim characterized in that the sub-engaging portion is comprised of a required number of small annular grooves 9 formed in the convex portion 8a of the piston 7, and a portion 5 into which the bearing portion 2 bites into the annular groove 9. 1. The sealing device according to 1. 3. According to claim 1, the sub-engaging portion comprises a plurality of sunken holes 10 formed in the convex portion 8a of the piston 7, and a portion 6 into which the bearing portion 2 bites into the sunken holes 10. sealing device. 4. Claim 1, wherein the sub-engaging portion is a porous plate 11 crimped between the convex portion 8a of the piston 7 and the inner periphery of the bearing portion 2 corresponding to the convex portion 8a.
The sealing device described in .
JP1988133427U 1988-10-14 1988-10-14 Sealing device Expired - Lifetime JPH0642141Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988133427U JPH0642141Y2 (en) 1988-10-14 1988-10-14 Sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988133427U JPH0642141Y2 (en) 1988-10-14 1988-10-14 Sealing device

Publications (2)

Publication Number Publication Date
JPH0254970U true JPH0254970U (en) 1990-04-20
JPH0642141Y2 JPH0642141Y2 (en) 1994-11-02

Family

ID=31391276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988133427U Expired - Lifetime JPH0642141Y2 (en) 1988-10-14 1988-10-14 Sealing device

Country Status (1)

Country Link
JP (1) JPH0642141Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0596638U (en) * 1992-05-29 1993-12-27 エヌオーケー株式会社 Bearing device
KR20150093710A (en) * 2012-12-20 2015-08-18 로베르트 보쉬 게엠베하 Piston fuel pump for an internal combustion engine
JP2017538891A (en) * 2014-12-17 2017-12-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Piston fuel pump for internal combustion engines
JP2017538892A (en) * 2014-12-17 2017-12-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Piston fuel pump for internal combustion engines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194653U (en) * 1984-11-28 1986-06-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194653U (en) * 1984-11-28 1986-06-18

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0596638U (en) * 1992-05-29 1993-12-27 エヌオーケー株式会社 Bearing device
KR20150093710A (en) * 2012-12-20 2015-08-18 로베르트 보쉬 게엠베하 Piston fuel pump for an internal combustion engine
KR20150093709A (en) * 2012-12-20 2015-08-18 로베르트 보쉬 게엠베하 Piston fuel pump for an internal combustion engine
JP2016500421A (en) * 2012-12-20 2016-01-12 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Piston fuel pump for internal combustion engines
JP2016500418A (en) * 2012-12-20 2016-01-12 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Piston fuel pump for internal combustion engines
US10767644B2 (en) 2012-12-20 2020-09-08 Robert Bosch Gmbh Piston fuel pump for an internal combustion engine
JP2017538891A (en) * 2014-12-17 2017-12-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Piston fuel pump for internal combustion engines
JP2017538892A (en) * 2014-12-17 2017-12-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Piston fuel pump for internal combustion engines
US10288025B2 (en) 2014-12-17 2019-05-14 Robert Bosch Gmbh Piston fuel pump for an internal combustion engine
US10400727B2 (en) 2014-12-17 2019-09-03 Robert Bosch Gmbh Piston fuel pump for an internal combustion engine

Also Published As

Publication number Publication date
JPH0642141Y2 (en) 1994-11-02

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