WO2010142645A1 - Cartouche de gaz avec lubrification à la graisse - Google Patents

Cartouche de gaz avec lubrification à la graisse Download PDF

Info

Publication number
WO2010142645A1
WO2010142645A1 PCT/EP2010/057931 EP2010057931W WO2010142645A1 WO 2010142645 A1 WO2010142645 A1 WO 2010142645A1 EP 2010057931 W EP2010057931 W EP 2010057931W WO 2010142645 A1 WO2010142645 A1 WO 2010142645A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
annular
piston rod
wall
cylinder
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.)
Ceased
Application number
PCT/EP2010/057931
Other languages
German (de)
English (en)
Inventor
Hans-Peter Barthelt
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
Publication of WO2010142645A1 publication Critical patent/WO2010142645A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F16F9/3278—Details for lubrication
    • 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
    • F16F9/0281—Details
    • 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
    • F16F9/362—Combination of sealing and guide arrangements for piston rods

Definitions

  • Gas springs have a usually cylindrical cylinder tube, which is provided at both ends with closure pieces.
  • the one closure piece contains a bore through which a piston rod leads into the interior of the cylinder tube.
  • a piston On this inner end of the piston rod is seated a piston, which essentially has the task of preventing the gas pressure prevailing in the interior of the cylinder tube, the piston rod ejected outward. He acts in this respect essentially as a stop and not, as one might initially suspect, actually as a piston. Rather, the extension force of the gas spring is due to the volume change that occurs when the piston rod penetrates into or out of the cylinder tube.
  • the closure piece, through which the piston rod passes, is provided with an annular space which preferably surrounds the piston rod concentrically.
  • a corresponding annular piston which cooperates frictionally at least with the piston rod. This allows the annular piston to be moved back and forth in a movement of the piston rod in the annular space between the two ends.
  • the annular space contains a grease filling, either on both sides of the ring piston or only on one side of the ring piston. Due to the frictionally co-operating with the piston rod annular piston, the grease filling between the annular piston and lying in the direction of movement end face of the annular space is compressed during the movement of the Kol ⁇ . As a result, the grease on all sides pressed against the piston rod and ensures lubrication of the piston rod.
  • the radially outer wall of the annular space can form a small gap with the adjacent surface of the annular piston. If this causes grease to reach the other side of the ring piston, the grease is transported back again during the reverse movement.
  • the smaller the annular gap the better the effect, preferably the arrangement is such that virtually no annular gap is created. It is also possible to work without an annular gap at this point, provided that the frictional force which the annular piston generates on the wall of the annular chamber is smaller than the friction which is effective between the annular piston and the piston rod or the cylinder wall. In this case prevents grease from passing on the ring piston on the other side of the ring piston, when the grease is compressed during movement.
  • the annular piston consists of an O-ring, which is correspondingly arranged frictionally.
  • the fluid cylinder arrangement according to the invention may be a gas pressure spring or a gas tension spring. It is also conceivable to produce a gas spring with damping characteristic in which the piston is actually sealed against the cylinder wall and contains a throttle bore.
  • Fig. 1 shows the gas spring according to the invention in a side view.
  • Fig. 2 illustrates the closure piece of the gas spring through which the piston rod passes, in a longitudinal section.
  • Fig. 3 shows an enlarged detail of a gas spring with sealed piston.
  • throttle cable spring 1 shows in a side view a throttle cable spring 1.
  • To the throttle cable spring 1 includes a cylinder tube 2, the one NEN cylindrical interior 3 (Fig. 2) limited.
  • the cylinder tube 2 is sealed by a plugged-in closure or end piece 4.
  • the tail 4 carries on its outside a fastening tab. 5
  • the attachment of the end piece 4 is done by means of two indented grooves 6, 7, through which the material of the cylinder tube 2 is displaced into corresponding annular grooves of the end piece 4.
  • the seal is done in a known manner by O-rings, either in the annular grooves for the beads 6, 7 or by O-rings at a separate location.
  • end of the cylinder tube 2 also sits an end or closure piece 8, through which a piston rod 9 passes.
  • the piston rod 9 passes through a corresponding bore 10 in the end or closure piece 8. It carries on the outer end of a thread 11.
  • the design of the closure or tail 8 results from the sectional view of FIG. 2nd
  • the closure or end piece 8 consists of two insert pieces 12 and 13.
  • the insert piece 12 has the shape of about a cup with a bottom 14 and a circumferential collar 15, which ends with a flat end face. Or in other words, the insert 12 is a cylindrical piece, in which a stepped bore is sunk. A part of the stepped bore is the bore 10 for the piston rod. 9
  • the insert 12 For attachment in the cylinder tube 2, the insert 12 has a circumferential annular groove 16 in which a Polymer seal 17 is located.
  • a circumferential embossed bead 18 displaces the material of the cylinder tube 2 in the annular groove 16 so as to secure the insert 12 axially and at the same time with the aid of the elastomer seal 17 to effect a gas-tight seal.
  • the insert 13 is in the illustrated embodiment, a substantially simple planar annular disc 13 with the bore 10.
  • the insert 13 includes a circumferential annular groove 19 with a seated therein polymer seal 21st
  • An embossed in the cylinder tube 2 circumferential bead 22 projects as the bead 18 on its inner side in the annular groove 19 in order to achieve there the axial securing and sealing.
  • a cylindrical annular space 23 is formed which concentrically surrounds the piston rod 9.
  • the annular space 23 is bounded by a concentric with the axis of the piston rod 9 cylindrical wall 24 and two end faces 25 and 26.
  • the end face 25 is formed in the insert 12 as shown, while the planar end face 26 is the adjacent end face of the insert 13.
  • the annular space 23 is substantially sealed to the outside. Why the insert 12 is provided with a flat end face on which abuts the adjacent planar end face of the insert 13.
  • annular piston in the form of an O-ring 27, the frictionally engaged on the Piston rod 9 is seated. If necessary, the O-ring 27 forms an annular gap with the wall 24 or lies against it only lightly. In any case, the frictional force between the O-ring 27 and the piston rod 9 is greater than the frictional force between the O-ring 27 and the wall 24th
  • Fig. 2 the arrangement is shown so that the O-ring 27 is substantially in the middle between the two end faces 25 and 26.
  • the annular space 23 is divided into two chambers. Both chambers are each provided with a grease.
  • This grease filling is to lubricate the piston rod 9 to lubricate piston rod seals 29 and 31, which are schematically indicated as O-rings.
  • the seals 29 and 31 are to seal the pressurized interior of the gas spring 2 against the outside atmosphere or against the piston rod 9. They sit in corresponding annular grooves.
  • the displaceable in the cylinder tube 2 piston 35 is connected to the inner end of the piston rod 9. It includes a total of 3 circumferential annular grooves 36, 37 and 38.
  • the annular grooves 36 and 38 serve to receive seals 39 and 41, which seals the piston 35 against the inner wall of the cylinder tube 2 during movement.
  • the annular groove 37 forms an annular space 42 which is bounded by two mutually parallel front ends or end faces 43, 44 and a cylindrical bottom surface 45.
  • This annular piston 46 in the form of an O-ring.
  • This annular piston 46 is frictionally engaged on the inside of the cylinder tube 2, while it forms a slight gap with the bottom 45 of the annular groove 37. This gap can also disappear, provided the frictional force experienced by the O-ring 46 on the wall of the cylinder tube 2 is greater than the frictional force acting between the O-ring 46 and the Nutenring 37.
  • the O-ring 46 in turn divides the annular space 42 into two chambers, each filled with grease.
  • the O-ring is displaced counter to the direction of movement and thus compresses the grease in the grease chamber which, viewed from the O-ring 46, is opposite to the direction of movement. This ensures that the contained grease is constantly pressed against the inner wall of the cylinder tube 2 in order to keep this surface lubricated for the seal 41.
  • a gas spring has in the end piece, through which the piston rod passes, an annular space which is filled with grease.
  • an annular piston in the form of an O-ring which frictionally engages the piston rod is seated in the annulus. By moving the piston rod, the grease on the relevant side of the piston compressed and thus pressed against the piston rod.
  • a similar arrangement is provided for a piston in a gas tension spring.

Landscapes

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

Abstract

Une cartouche de gaz présente dans la pièce d'extrémité, à travers laquelle la tige de piston passe, un espace annulaire qui est rempli de graisse. Pour maintenir la graisse en contact avec la tige de piston dans les cas où l'espace annulaire se vide peu à peu, un piston annulaire sous la forme d'un joint torique, qui est en liaison par frottement avec la tige de piston, est logé dans l'espace annulaire. Par le mouvement de la tige de piston, la graisse est comprimée sur le côté concerné du piston et serrée ainsi contre la tige de piston. Un agencement allant dans ce sens est prévu pour un piston dans un ressort de traction à gaz.
PCT/EP2010/057931 2009-06-09 2010-06-07 Cartouche de gaz avec lubrification à la graisse Ceased WO2010142645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009024871.4 2009-06-09
DE200910024871 DE102009024871A1 (de) 2009-06-09 2009-06-09 Gasfeder mit Fettschmierung

Publications (1)

Publication Number Publication Date
WO2010142645A1 true WO2010142645A1 (fr) 2010-12-16

Family

ID=42760527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/057931 Ceased WO2010142645A1 (fr) 2009-06-09 2010-06-07 Cartouche de gaz avec lubrification à la graisse

Country Status (2)

Country Link
DE (1) DE102009024871A1 (fr)
WO (1) WO2010142645A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405649A (zh) * 2022-08-26 2022-11-29 李贵伦 一种气体平衡装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108423A (en) * 1976-07-19 1978-08-22 Atwood Vacuum Machine Company Gas spring
US4548389A (en) * 1983-03-01 1985-10-22 Fichtel & Sachs Industries, Inc. Redundant high-pressure seal for fluid spring
WO2006005330A1 (fr) * 2004-07-13 2006-01-19 Busak + Shamban Deutschland Gmbh Ensemble d'etancheite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108423A (en) * 1976-07-19 1978-08-22 Atwood Vacuum Machine Company Gas spring
US4548389A (en) * 1983-03-01 1985-10-22 Fichtel & Sachs Industries, Inc. Redundant high-pressure seal for fluid spring
WO2006005330A1 (fr) * 2004-07-13 2006-01-19 Busak + Shamban Deutschland Gmbh Ensemble d'etancheite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405649A (zh) * 2022-08-26 2022-11-29 李贵伦 一种气体平衡装置

Also Published As

Publication number Publication date
DE102009024871A1 (de) 2010-12-16

Similar Documents

Publication Publication Date Title
DE2759943C2 (de) Dichtungsanordnung für die Kolbenstange eines Stoßdämpfers
EP2035732B1 (fr) Joint et ensemble joint
DE102011101968B4 (de) Fluiddruckvorrichtung
DE102017010876B4 (de) Zylinder-Kolben-Einheit mit lastabhängiger Drossel
DE112010005137B4 (de) Hydraulischer Stoßdämpfer
DE10102161A1 (de) Ringförmige Dichtung
DE202014003963U1 (de) Dichtung für ein Wälzlager oder eine sonstige Drehverbindung
EP1110017B1 (fr) ELEMENT D'ETANCHEITE A FAIBLE FROTTEMENT et cylindre hydraulique
DE2248156A1 (de) Dichtungseinrichtung
DE3700934C2 (de) Gasfeder
DE2609817B2 (de) Kolben, insbesondere für einen Pneumatikzylinder
EP1769176B1 (fr) Ensemble d'etancheite
DE967721C (de) Zylinder mit Kolben, insbesondere fuer einen Druckspeicher, in hydraulischen Anlagen
EP3149366B1 (fr) Bague d'étanchéité ou segment racleur
DE2708456B2 (de) Gleitende Dichtung für Kolben und Kolbenstangen
DE2440874A1 (de) Dichtungsanordnung
DE102009012366B4 (de) Dichtelement für eine Zylinder-/Kolbenanordnung einer Fahrzeugbremsanlage
WO2010142645A1 (fr) Cartouche de gaz avec lubrification à la graisse
DE2021208A1 (de) Zweikreiszylinder
WO2016113414A1 (fr) Système d'étanchéité présentant des éléments de décompression, et utilisation d'un système d'étanchéité pour le réglage d'une cascade de pression dans des espaces intermédiaires
DE19721137B4 (de) Blockierbare Gasfeder mit schneller Ausschubgeschwindigkeit
DE102017122269A1 (de) Dichtungsanordnung, insbesondere für Radialgelenklager
EP1342922B1 (fr) Accumulateur de pression
DE1475871A1 (de) Kolben fuer Nehmerzylinder von hydraulischen Anlagen
DE102022132774B3 (de) Nehmerzylinder mit selbstentlüftendem Dichtring

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10724498

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10724498

Country of ref document: EP

Kind code of ref document: A1