JPS57186668A - Oil seal - Google Patents

Oil seal

Info

Publication number
JPS57186668A
JPS57186668A JP56072543A JP7254381A JPS57186668A JP S57186668 A JPS57186668 A JP S57186668A JP 56072543 A JP56072543 A JP 56072543A JP 7254381 A JP7254381 A JP 7254381A JP S57186668 A JPS57186668 A JP S57186668A
Authority
JP
Japan
Prior art keywords
convexities
axis
contiguous
pitch
concavities
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.)
Pending
Application number
JP56072543A
Other languages
Japanese (ja)
Inventor
Akira Washida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to JP56072543A priority Critical patent/JPS57186668A/en
Publication of JPS57186668A publication Critical patent/JPS57186668A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

PURPOSE:To obtain good sealing performance irrespentive of rotating direction of a rotating axis by providing a plural number of concavities and convexities having a pitch of approximately 1mm. or more at a seal angle side of a seal lip contiguous to or close to a contact point. CONSTITUTION:A plural number of axial concavities and convexities are made at a seal angle side (A) of a seal lip 2, contiguous to or in vicinity to a contiguous point (C). The shortest part of a pitch (P) on a circumference of a convexity (D) in these concavities and convexities is to be made a pitch of approximately 1mm. or larger. When an axis is rotated, the convexity (D) is bent toward rotating direction of the axis by friction force with the axis at a section closer to the contiguous point, generating a row of convexities. This causes tiwsted viscous pumping action and resists against leak of sealing fluid.
JP56072543A 1981-05-14 1981-05-14 Oil seal Pending JPS57186668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56072543A JPS57186668A (en) 1981-05-14 1981-05-14 Oil seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072543A JPS57186668A (en) 1981-05-14 1981-05-14 Oil seal

Publications (1)

Publication Number Publication Date
JPS57186668A true JPS57186668A (en) 1982-11-17

Family

ID=13492372

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072543A Pending JPS57186668A (en) 1981-05-14 1981-05-14 Oil seal

Country Status (1)

Country Link
JP (1) JPS57186668A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0247474U (en) * 1988-09-29 1990-03-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0247474U (en) * 1988-09-29 1990-03-30

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