EP0258656A1 - Dispositif télescopique - Google Patents

Dispositif télescopique Download PDF

Info

Publication number
EP0258656A1
EP0258656A1 EP87111192A EP87111192A EP0258656A1 EP 0258656 A1 EP0258656 A1 EP 0258656A1 EP 87111192 A EP87111192 A EP 87111192A EP 87111192 A EP87111192 A EP 87111192A EP 0258656 A1 EP0258656 A1 EP 0258656A1
Authority
EP
European Patent Office
Prior art keywords
guide
ring body
guide ring
telescopic device
carrier sleeve
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
EP87111192A
Other languages
German (de)
English (en)
Other versions
EP0258656B1 (fr
Inventor
Hans-Josef Dipl.-Ing. Hosan
Gregor Dipl.-Ing. Poertzgen
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.)
Stabilus GmbH
Original Assignee
Stabilus GmbH
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 Stabilus GmbH filed Critical Stabilus GmbH
Publication of EP0258656A1 publication Critical patent/EP0258656A1/fr
Application granted granted Critical
Publication of EP0258656B1 publication Critical patent/EP0258656B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder

Definitions

  • the invention relates to a telescopic device comprising an outer telescopic part with a cavity that has an axis, an inner telescopic part at least partially received by the cavity with an outer guide surface, which is linearly and substantially wobble-free relative to the outer telescopic part in the direction of the axis and an annular guide unit inserted into the outer telescopic part with an inner guide surface arrangement for contacting the outer guide surface of the inner telescopic part.
  • Such telescopic devices occur in particular in chair columns in which the outer telescopic part is formed by a standpipe of the chair column and the inner telescopic part by a casing tube of a gas spring, while the piston rod of the gas spring is firmly connected to a bottom of the standpipe in the axial direction.
  • the object of the present invention is to create a telescopic device, in particular for use as a chair column, in which the inner telescopic part can slide and rotate properly relative to the outer telescopic part and thus axial movement resistances are substantially reduced. Misalignments should be compensated for without creating higher friction or edge pressure. Over a very long period of operation, the wear of the elements involved should be as low as possible. The assembly of the telescopic device should be simplified.
  • the invention is based on a telescopic device comprising an outer telescopic part with a cavity that has an axis, an inner telescopic part at least partially received by the cavity with an outer guide surface, which can move linearly and essentially without wobble relative to the outer telescopic part in the direction of the axis and an annular guide unit inserted into the outer telescopic part with an inner guide surface arrangement for contacting the outer guide surface of the inner telescopic part.
  • At least one inner guide surface section of the inner guide surface arrangement is formed on a guide ring body which is mounted on a support sleeve of the guide unit in a universal joint.
  • the inner telescopic part should be able to move freely within the outer telescopic part, two axially spaced guide points between the outer guide surface and the inner guide surface arrangement must be expected. These guide points are cylindrical surfaces and must be in as precise an axial alignment as possible to ensure perfect, low-friction guidance. If, according to the invention, at least one inner guide surface section of the inner guide surface arrangement is formed on a guide ring body, which is mounted in a universal joint on a carrier sleeve of the guide unit, then the two axially spaced guide points automatically adjust to an approximately exact alignment, so that a perfect guide without essential Canting friction is guaranteed.
  • the guide ring body can be received in an inner circumferential groove on the inside of the carrier sleeve.
  • the circumferential groove can be designed with a hollow spherical partial surface and the guide ring body can be provided with a partially spherical outer surface which rests on the hollow spherical partial surface.
  • the carrier sleeve is formed from two half-shells which, after the guide ring body has been received, are pushed into the cavity and thereby held together.
  • two guide ring bodies are arranged within the carrier sleeve at an axial distance, each of which has a universal joint with respect to the carrier sleeve is stored.
  • a perfect axial alignment on two cylindrical guide surface sections is ensured, since these guide surface sections can be automatically centered against one another in precise axial alignment. This ensures that the outer guide surface of the inner telescopic part is guided with low friction in two cylindrical surfaces spaced apart in the axial direction.
  • Another simple possibility of installing one or more guide ring bodies in a carrier sleeve results from the fact that the carrier sleeve is provided on one section of its axial length with slots open at one end and that the inner circumferential groove is formed in this section. The guide ring body can then be snapped into the inner circumferential groove by spreading the slotted section of the carrier sleeve.
  • the carrier sleeve can be made of plastic or metal, in particular light metal, in particular in the form of an injection molded body.
  • the guide ring body is preferably made of metal or sintered metal and can have a coating made of low-friction material on its inner surface. This coating of low-friction material does not have to be applied directly to the inner surface of the guide ring body, but can also be arranged on the inner surface of a sliding bushing which is inserted with its outer surface into the guide ring body.
  • the outer telescopic part can be formed, for example, by a standpipe of a chair column, which at its lower end has a bottom and is open at its upper end, while on the other hand the inner telescopic part can be formed by a casing tube of a gas spring which has a piston rod axially attached to the bottom of the standpipe.
  • each of these guide points is preferably formed by a guide ring body mounted in the support sleeve in a universal joint.
  • a chair column which comprises an arbitrarily lockable gas spring l.
  • a casing tube 2 of the gas spring 1 is guided in a guide unit 9, which is pressed into the upper end of a standpipe 8.
  • the gas spring 1 has a piston rod 3, which is rotatably mounted with its lower end on a bottom 8a of the standpipe 8, axially fixed and with radial play.
  • the casing tube 2 has at its upper end a conical fastening section 2a which can be inserted into a correspondingly conical hollow hub of a chair seat.
  • the standpipe 8 has at its lower end a conical section 8b which can be inserted into a correspondingly conical bore in a chair base.
  • the piston rod 3 is connected within the gas spring 2 to a piston 4, which separates two working spaces 5 and 6 from one another within the gas spring.
  • the two working spaces 5 and 6 are at least partially filled with gas under pressure.
  • the two working spaces 5 and 6 can be connected to one another by an overflow connection 20 bridging the piston 4.
  • This overflow connection 20 is blocked by a valve device 7.
  • Axial pressure on valve device 7 enables overflow connection 20 be opened so that a fluid exchange between the two work rooms 5 and 6 can take place.
  • a certain extension length of the gas spring 1 is set. In order to change the extension length, the valve device 7 must be opened. Then the pressure medium within the working chambers 5 and 6 tries to push the piston rod 3 out of the gas spring until the valve device 7 is closed again. Part of the work rooms 5 and 6 can also be filled with liquid.
  • the guide unit 9 is shown in detail in FIGS. 2 and 3. It comprises a carrier sleeve 10, which is composed of two partial shells 10a and 10b. On the inside of the carrier sleeve l0, two inner circumferential grooves l2 are formed at an axial distance from one another, each of which has a hollow spherical partial surface l3. A guide ring body 11 is inserted into the inner circumferential groove l2 and has a partially spherical outer surface. In the guide ring body 11 a slide bush l4 is inserted, which carries a plastic coating l5. The inner peripheral surface of the plastic coating l5 has a smaller radius than the inner peripheral surface of the carrier sleeve l0.
  • the assembly is carried out as follows.
  • the casing tube 2 of the gas spring 1 is inserted through the two guide ring bodies 11.
  • the guide ring bodies are then inserted into the inner circumferential grooves 12 of the one half-shell 10a.
  • the other half-shell l0b is placed on, completing the carrier sleeve l0.
  • the carrier sleeve 10 is then inserted into the standpipe 8, the lower end of the piston rod 3 passing through the bottom 8a of the standpipe 8. Now the lower end of the piston rod 3 is fastened to the base 8a by a locking ring 2l.
  • the lower end of the piston rod 3 has radial play in the base 8a.
  • the guide ring body 11 align themselves automatically when inserting the casing tube 2. Once they are aligned, the casing tube 2 is rigidly and wobble-free from the support sleeve 10 and thus received by the standpipe 8. Since the piston rod 3 has radial play in the base 8a, there is no possibility of the bending moment acting on the piston rod 3, even if the chair seat is loaded eccentrically. Since the guide ring bodies 11 with their plastic sliding layers l5 rest against the casing tube 2, a low-friction guidance is ensured. Any temperature-related expansions of the carrier sleeve 10 do not influence the guiding properties. Since the guide ring bodies 11 are made of metal, in particular steel, or sintered metal, the inside diameter of the sliding layers 15 remains essentially constant.
  • the guide unit l09 according to FIGS. 4 and 5 differs from the guide unit 9 according to FIGS. L to 3 essentially in that a single guide ring body lll is inserted in a universal joint in an inner circumferential groove ll2 or in its hollow spherical partial surface ll3.
  • the carrier sleeve ll0 has a closed ring section ll7, and above the closed ring section ll7 slots ll9, which form spring tongues ll9a. Thanks to these slots ll9, the upper section of the carrier sleeve ll0 can be spread from above by pressing in the guide ring body lll, until the guide ring body III snaps into the inner circumferential groove ll2.
  • the guide ring body III is directly coated with a low-friction plastic layer II5.
  • the casing tube in addition to its guidance in the guide ring body III, can also have direct guidance in the closed ring section 117. In this way, wobble-free guidance of the casing tube is again obtained. Since the guide ring body III can also adjust itself here, a low-friction guidance is also obtained here.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Actuator (AREA)
EP87111192A 1986-08-09 1987-08-03 Dispositif télescopique Expired - Lifetime EP0258656B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3627138 1986-08-09
DE19863627138 DE3627138A1 (de) 1986-08-09 1986-08-09 Fuehrung teleskopartig ineinander verschiebbare zylindrische teile

Publications (2)

Publication Number Publication Date
EP0258656A1 true EP0258656A1 (fr) 1988-03-09
EP0258656B1 EP0258656B1 (fr) 1990-07-11

Family

ID=6307124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111192A Expired - Lifetime EP0258656B1 (fr) 1986-08-09 1987-08-03 Dispositif télescopique

Country Status (6)

Country Link
US (1) US4848524A (fr)
EP (1) EP0258656B1 (fr)
JP (1) JPS6367410A (fr)
AU (1) AU595351B2 (fr)
DE (2) DE3627138A1 (fr)
ES (1) ES2016310B3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8800976U1 (de) * 1988-01-28 1989-06-01 Fritz Bauer + Söhne oHG, 8503 Altdorf Blockierbare Hubvorrichtung zum stufenlosen Verstellen von Möbelteilen und Führungsbüchse für eine solche Hubvorrichtung
DE4200786A1 (de) * 1992-01-14 1993-07-15 Suspa Compart Ag Laengenverstellbare saeule fuer tische, stuehle o. dgl.
CN103122890A (zh) * 2011-10-20 2013-05-29 海瓦控股有限公司 伸缩液压缸
EP3001932A1 (fr) * 2014-09-30 2016-04-06 Innotec Motion GmbH Dispositif de reglage en hauteur d'une assise d'un siege
WO2016050286A1 (fr) * 2014-09-30 2016-04-07 Innotec Motion GmbH Dispositif pour régler en hauteur une surface d'assise d'un siège

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940916A1 (de) * 1989-12-12 1991-06-13 Stabilus Gmbh Teleskopierbare verstelleinrichtung mit loesbarer arretierung
DE4003245C2 (de) * 1990-02-03 1997-08-21 Stabilus Gmbh Führung für teleskopartig ineinander verschiebbare zylindrische Teile
US5140894A (en) * 1991-01-16 1992-08-25 Axelson, Inc. Gas spring actuator
SE468178B (sv) * 1991-03-21 1992-11-16 Oehlins Racing Ab Anordning vid fjaedringssystem
DE4212282A1 (de) * 1992-04-11 1993-10-14 Stabilus Gmbh Säuleneinheit, insbesondere Stuhlsäuleneinheit
CA2319884C (fr) * 1992-06-15 2001-12-04 Herman Miller, Inc. Colonne a support pneumatique pour une chaise
DE4233407A1 (de) * 1992-10-05 1994-04-07 Stabilus Gmbh Führung für teleskopartig ineinander verschiebbare zylindrische Teile
DE4444176C2 (de) * 1994-12-12 2002-01-24 Stabilus Gmbh Kolbenzylinder-Aggregat für ein Standrohr
US5740997A (en) * 1995-06-07 1998-04-21 Herman Miller, Inc. Pneumatic height adjustment column for a chair
US5608960A (en) * 1995-06-07 1997-03-11 Herman Miller, Inc. Apparatus and method for mounting a support column to a chair base and tilt control housing
DE19636202C2 (de) * 1996-09-06 1999-12-30 Stabilus Gmbh Führungsbuchse für teleskopisch ineinander verschiebbare Teile
US5918862A (en) * 1997-04-16 1999-07-06 Technical Manufacturing Corporation High damping pneumatic isolator
US6098937A (en) * 1998-01-08 2000-08-08 Carnahan; Garnett Support stand, assembly using the same, and method of making the same
DE10219583A1 (de) * 2001-06-01 2002-12-05 Stabilus Gmbh Objektträgersäule
US7703377B2 (en) 2006-08-19 2010-04-27 Stabilus Gmbh Bend-resistant piston/cylinder unit
DE102009058647A1 (de) * 2009-12-16 2011-06-22 Stabilus GmbH, 56070 Objektträgersäule
JP6646502B2 (ja) * 2016-03-30 2020-02-14 株式会社ショーワ 懸架装置
CN112566436A (zh) * 2020-12-14 2021-03-26 湖南维创尚科技有限公司 一种便于维护的5g通讯设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1335634A (fr) * 1962-07-12 1963-08-23 Renault Perfectionnements à la fixation des amortisseurs
DE7235759U (de) * 1973-02-01 Giroflex Entwicklungs Ag Gasmechanik insbesondere fur Stuhle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US738129A (en) * 1902-03-21 1903-09-01 Edwin W Tucker Metallic packing.
GB964684A (en) * 1962-10-01 1964-07-22 Cross Mfg Co 1938 Ltd Improvements in piston rings and in piston-and-ring assemblies for internal combustion engines
US3226141A (en) * 1962-10-22 1965-12-28 Gen Motors Corp Ball joint seat assembly
US3464882A (en) * 1965-01-21 1969-09-02 Russell Mfg Co The Antifriction bearing element
CH514317A (de) * 1969-06-19 1971-10-31 Bauer Fritz Hubvorrichtung zum stufenlosen Höherverstellen einer Tragfläche, insbesondere Sitzfläche von Stühlen oder Hockern
NL6917832A (fr) * 1969-11-27 1971-06-01
US4108416A (en) * 1975-09-17 1978-08-22 Tokico Ltd Device for adjusting length of gas spring
US4511277A (en) * 1981-07-14 1985-04-16 Ford Motor Company Ball joints and liners therefor
US4408924A (en) * 1982-08-25 1983-10-11 Harley-Davidson Motor Co., Inc. Split collar
DE3420528A1 (de) * 1984-06-01 1985-12-05 Stabilus Gmbh, 5400 Koblenz Stufenlos verstellbare hubvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7235759U (de) * 1973-02-01 Giroflex Entwicklungs Ag Gasmechanik insbesondere fur Stuhle
FR1335634A (fr) * 1962-07-12 1963-08-23 Renault Perfectionnements à la fixation des amortisseurs

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8800976U1 (de) * 1988-01-28 1989-06-01 Fritz Bauer + Söhne oHG, 8503 Altdorf Blockierbare Hubvorrichtung zum stufenlosen Verstellen von Möbelteilen und Führungsbüchse für eine solche Hubvorrichtung
EP0325726A1 (fr) * 1988-01-28 1989-08-02 SUSPA COMPART Aktiengesellschaft Dispositif de levage blocable pour le réglage de parties de meubles et guidage pour un tel dispositif de levage
DE4200786A1 (de) * 1992-01-14 1993-07-15 Suspa Compart Ag Laengenverstellbare saeule fuer tische, stuehle o. dgl.
US5333968A (en) * 1992-01-14 1994-08-02 Suspa Compart Aktiengesellschaft Length-adjustable column for tables, chairs or the like
CN103122890A (zh) * 2011-10-20 2013-05-29 海瓦控股有限公司 伸缩液压缸
EP3001932A1 (fr) * 2014-09-30 2016-04-06 Innotec Motion GmbH Dispositif de reglage en hauteur d'une assise d'un siege
WO2016050286A1 (fr) * 2014-09-30 2016-04-07 Innotec Motion GmbH Dispositif pour régler en hauteur une surface d'assise d'un siège

Also Published As

Publication number Publication date
AU595351B2 (en) 1990-03-29
AU7607787A (en) 1988-02-11
DE3763634D1 (de) 1990-08-16
JPS6367410A (ja) 1988-03-26
US4848524A (en) 1989-07-18
EP0258656B1 (fr) 1990-07-11
DE3627138A1 (de) 1988-02-11
ES2016310B3 (es) 1990-11-01

Similar Documents

Publication Publication Date Title
EP0258656B1 (fr) Dispositif télescopique
DE2903863C2 (de) Hydraulischer Stoßdämpfer
DE2459340C2 (de) Stufenlos höhenverstellbare Säule
DE69016218T2 (de) Hydraulisch blockierbare Gasfeder.
DE102006011491B3 (de) Höhenverstellbare Stuhlsäule
DE3707046C2 (fr)
DE3419364A1 (de) Stufenlos blockierbares hubaggregat
EP0511500B1 (fr) Vérin blocable pour le réglage continu de sièges
DE2942716A1 (de) Reibungsdaempfer
DE3222885C2 (de) Hydraulikdämpfer
DE4003245A1 (de) Fuehrung fuer teleskopartig ineinander verschiebbare zylindrische teile
EP1435805A1 (fr) Baton de trekking dote d'un amortisseur de chocs
EP0565982A1 (fr) Agencement de soupape
EP2078167B1 (fr) Dispositif d'amortissement ayant une caractéristique d'amortissement pouvant être modifiée de manière réglable pour l'amortissement d'éléments mobiles de meubles
DE29706849U1 (de) Längenverstellbares Rohr, insbesondere für Ski- oder Wanderstöcke
DE2826182C2 (fr)
DE19631844C2 (de) Vorrichtung zum Einsetzen eines geschlitzten elastischen Sicherungsringes in eine Ringnut eines Werkstückes
DE3615688A1 (de) Laengenverstellbare gasfeder und betaetigungseinrichtung hierfuer
DE4242475A1 (de) Führungsbuchse, insbesondere für längenverstellbare Stuhl-Säule und Stuhl-Säule mit derartiger Führungsbuchse
DE2757711A1 (de) Hydraulischer teleskopstossdaempfer fuer ein kraftfahrzeug
DE2130838A1 (de) Skistock
WO2001090587A1 (fr) Tube a longueur variable
DE3508500C2 (de) Befestigung eines Kolbens auf einer Kolbenstange, insbesondere für hydraulische Teleskop-Schwingungsdämpfer
DE2520064C2 (de) Verstellbarer Reibungs-Schwingungsdämpfer
EP0248230B1 (fr) Dispositif de fixation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19880509

17Q First examination report despatched

Effective date: 19891004

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3763634

Country of ref document: DE

Date of ref document: 19900816

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920507

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920714

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19920811

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920903

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19930804

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930803

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940503

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050803