WO2009094959A3 - Air spring - Google Patents

Air spring Download PDF

Info

Publication number
WO2009094959A3
WO2009094959A3 PCT/CZ2009/000008 CZ2009000008W WO2009094959A3 WO 2009094959 A3 WO2009094959 A3 WO 2009094959A3 CZ 2009000008 W CZ2009000008 W CZ 2009000008W WO 2009094959 A3 WO2009094959 A3 WO 2009094959A3
Authority
WO
WIPO (PCT)
Prior art keywords
piston
axially
throttle ring
hole
piston rod
Prior art date
Application number
PCT/CZ2009/000008
Other languages
French (fr)
Other versions
WO2009094959A2 (en
Inventor
Rafael Knobloch
Original Assignee
Jakl, Albin
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
Priority claimed from CZ20080057A external-priority patent/CZ200857A3/en
Priority claimed from CZ20080645A external-priority patent/CZ2008645A3/en
Application filed by Jakl, Albin filed Critical Jakl, Albin
Priority to EP09706207A priority Critical patent/EP2250391A2/en
Publication of WO2009094959A2 publication Critical patent/WO2009094959A2/en
Publication of WO2009094959A3 publication Critical patent/WO2009094959A3/en

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
    • 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
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0218—Mono-tubular units
    • 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
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3485—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of supporting elements intended to guide or limit the movement of the annular discs

Landscapes

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

Abstract

A compressive air spring, comprising a hollow working cylinder (1, 101), closed on one side with a first bottom (4, 104) and on the other side with a second bottom (5, 105) with a hole (6, 106) for a sealed piston rod (3, 103), its end protruding into the working cylinder (1, 101) is provided with a sliding piston (2, 102) fitted in the working cylinder (1, 101), the piston (2, 102) is provided with axial holes (8, 108), opposite which a sliding throttle element supported axially to control working medium flow through the axial holes (8, 108), whereas the throttle element is formed by a flat throttle ring (7, 107) arranged co-axially on the outer side of the piston rod (3, 103) between the piston (2, 102) and the end of an outer axially-movable defining tube (11, 111), fitted co-axially outwardly on the piston rod (3, 103) and going through the hole (6, 106) in the second bottom (5, 105), whereas an element defining stop position of the throttle ring (7, 107) is located between the piston (2, 102) and the throttle ring (7, 107), the element defining stop position of the throttle ring (7, 107) can be formed by an outer shoulder (13, 113) made up at one end of an;axially-movable inner defining tube (12, 112) fitted between the piston rod (3, 103) and the outer defining tube (11, 111), going through the hole of the throttle ring (7, 107), whereas the other end of the inner defining tube (12, 112) going through the hole (6, 106) in the second bottom (5, 105). Advantageously an additional throttle ring (60) for axially-sliding movement in the working cylinder (1) can be fitted opposite to the axial holes (8) on the side of the piston (2) opposite to the piston rod (3), whereas a spring (61) and a stop element, going through the axial hole (8) being provided between the throttle ring (7) and the additional throttle ring, (60) to set maximum distance between both rings.
PCT/CZ2009/000008 2008-01-31 2009-02-02 Air spring WO2009094959A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09706207A EP2250391A2 (en) 2008-01-31 2009-02-02 Air spring

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CZ20080057A CZ200857A3 (en) 2008-01-31 2008-01-31 Gas-filled spring device
CZPV2008-57 2008-01-31
CZPV2008-645 2008-10-21
CZ20080645A CZ2008645A3 (en) 2008-10-21 2008-10-21 Gas-filled spring device

Publications (2)

Publication Number Publication Date
WO2009094959A2 WO2009094959A2 (en) 2009-08-06
WO2009094959A3 true WO2009094959A3 (en) 2009-10-01

Family

ID=40886653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2009/000008 WO2009094959A2 (en) 2008-01-31 2009-02-02 Air spring

Country Status (2)

Country Link
EP (1) EP2250391A2 (en)
WO (1) WO2009094959A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2348903B1 (en) * 2010-07-16 2011-10-14 Azol-Gas, S.L. SPRING OF TELESCOPIC GAS.
JP6006109B2 (en) * 2012-12-25 2016-10-12 株式会社ショーワ Damper with air spring

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945015A1 (en) * 1979-11-08 1981-10-08 August Bilstein GmbH & Co KG, 5828 Ennepetal Adjuster spindle in hollow piston rod - regulates piston valve setting in hydraulic damper cylinder
US20050056507A1 (en) * 2003-09-15 2005-03-17 Molina Simon Anne De Shock absorber staged valving system
DE102006025579B3 (en) * 2006-06-01 2007-12-27 Zf Friedrichshafen Ag Piston rod for e.g. passenger car`s vibration damper, has axial transit channel via which mounting screw is guided, where thread connections provided by screw are accessible for adjustment of pre-stressing in each stroke position of rod

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945015A1 (en) * 1979-11-08 1981-10-08 August Bilstein GmbH & Co KG, 5828 Ennepetal Adjuster spindle in hollow piston rod - regulates piston valve setting in hydraulic damper cylinder
US20050056507A1 (en) * 2003-09-15 2005-03-17 Molina Simon Anne De Shock absorber staged valving system
DE102006025579B3 (en) * 2006-06-01 2007-12-27 Zf Friedrichshafen Ag Piston rod for e.g. passenger car`s vibration damper, has axial transit channel via which mounting screw is guided, where thread connections provided by screw are accessible for adjustment of pre-stressing in each stroke position of rod

Also Published As

Publication number Publication date
EP2250391A2 (en) 2010-11-17
WO2009094959A2 (en) 2009-08-06

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