SE0700033L - Front fork with sealing function - Google Patents

Front fork with sealing function

Info

Publication number
SE0700033L
SE0700033L SE0700033A SE0700033A SE0700033L SE 0700033 L SE0700033 L SE 0700033L SE 0700033 A SE0700033 A SE 0700033A SE 0700033 A SE0700033 A SE 0700033A SE 0700033 L SE0700033 L SE 0700033L
Authority
SE
Sweden
Prior art keywords
volume
filled
front fork
gas
damping
Prior art date
Application number
SE0700033A
Other languages
Swedish (sv)
Other versions
SE531829C2 (en
Inventor
Atsushi Ishii
Original Assignee
Oehlins Racing Ab
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 Oehlins Racing Ab filed Critical Oehlins Racing Ab
Priority to SE0700033A priority Critical patent/SE531829C2/en
Priority to PCT/SE2007/050990 priority patent/WO2008085097A1/en
Publication of SE0700033L publication Critical patent/SE0700033L/en
Publication of SE531829C2 publication Critical patent/SE531829C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/08—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/365—Special sealings, including sealings or guides for piston-rods the sealing arrangement having a pressurised chamber separated from the damping medium

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention relates to a front fork (1) having an inner first volume (1a), which is at least partially filled by a first fluid medium (01) in the form of an oil. The outer structure of the front fork (1) is made up of an outer leg (2) and an inner leg (3), which move telescopically relative to each other when subjected to an external force. The movement is controlled by a main spring (4) and is dampened by a damping device (5). The damping device is in the form of a damping cylinder (6) sealed off from the inner first volume (1 a) of the front fork and filled with a second fluid medium (O2) in the form of an oil pressurized at a basic pressure higher than the atmospheric pressure. The damping cylinder (6) has a second volume (13) and is divided into two damping chambers (R, C) by a piston (7) fixed to a piston rod (8). The piston rod (8) extends through a first sealing head (10) fixed at one end (6a) of the damping cylinder. Outside the damping cylinder (6), directly adjacent to the first sealing head (10), there is disposed a third volume (21) delimited by a body (20) and filled with a gas (G3), preferably air. The demarcations between the gas-filled third volume (21) and the inner oil-filled first volume (1 a) of the front fork and between the gas-filled third volume (21 ) and the oil-filled second volume (13) of the damping cylinder (6) comprise at least one seal (10a, 25) each, suitable for sealing between fluid medium and gas. The seal is preferably an X-ring or a lip seal with necessary back-up rings.
SE0700033A 2007-01-10 2007-01-10 Front fork with sealing function SE531829C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0700033A SE531829C2 (en) 2007-01-10 2007-01-10 Front fork with sealing function
PCT/SE2007/050990 WO2008085097A1 (en) 2007-01-10 2007-12-13 Framgaffel med tätningsfunktion / front fork with sealing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0700033A SE531829C2 (en) 2007-01-10 2007-01-10 Front fork with sealing function

Publications (2)

Publication Number Publication Date
SE0700033L true SE0700033L (en) 2008-07-11
SE531829C2 SE531829C2 (en) 2009-08-18

Family

ID=39608884

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0700033A SE531829C2 (en) 2007-01-10 2007-01-10 Front fork with sealing function

Country Status (2)

Country Link
SE (1) SE531829C2 (en)
WO (1) WO2008085097A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE529042C2 (en) * 2004-12-06 2007-04-17 Oehlins Racing Ab Telescopic fork
DE102011000279A1 (en) 2011-01-21 2012-07-26 Wp Suspension Austria Gmbh Telescopic suspension fork leg for e.g. bicycle, has contact surface formed along inner perimeter line of sealing device and transition surface and varied during relative movement between device and transition surface without jump function
DE102011000280B4 (en) 2011-01-21 2014-10-30 Wp Performance Systems Gmbh Telescopic fork leg with compensating volume for damping fluid
DE102011000281B4 (en) 2011-01-21 2014-12-04 Wp Performance Systems Gmbh Telescopic fork leg with hydraulic end stop
EP2479096B1 (en) 2011-01-21 2013-04-24 WP Performance Systems GmbH Telescopic suspension fork strut and telescopic suspension fork with same
JP6291266B2 (en) * 2014-01-27 2018-03-14 株式会社ショーワ Front fork
JP6345967B2 (en) * 2014-03-31 2018-06-20 株式会社ショーワ Suspension device
JP6293689B2 (en) * 2015-03-06 2018-03-14 株式会社ショーワ Suspension device
AT522946B1 (en) 2019-08-30 2022-01-15 Stadlbauer Ing Norbert telescopic shock absorber

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724370A1 (en) * 1987-07-23 1989-02-02 Stabilus Gmbh INNER PRESSURE INDEPENDENT SEALING SYSTEM WITH GAS PRESSURE SEALED LIPS
JPH05263862A (en) * 1992-03-20 1993-10-12 Tokico Ltd Gas spring
IT1299850B1 (en) * 1998-02-18 2000-04-04 Marzocchi Spa HYDROPNEUMATIC SHOCK ABSORBER, ADJUSTABLE, LOW WEIGHT, PARTICULARLY SUITABLE FOR FORMING THE LEGS OF A FORK
SE529042C2 (en) * 2004-12-06 2007-04-17 Oehlins Racing Ab Telescopic fork

Also Published As

Publication number Publication date
SE531829C2 (en) 2009-08-18
WO2008085097A1 (en) 2008-07-17

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Legal Events

Date Code Title Description
NUG Patent has lapsed