EP0553440B1 - Führungsbüchse für eine längenverstellbare Säule für Stühle, Tische od.dgl - Google Patents

Führungsbüchse für eine längenverstellbare Säule für Stühle, Tische od.dgl Download PDF

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Publication number
EP0553440B1
EP0553440B1 EP92120693A EP92120693A EP0553440B1 EP 0553440 B1 EP0553440 B1 EP 0553440B1 EP 92120693 A EP92120693 A EP 92120693A EP 92120693 A EP92120693 A EP 92120693A EP 0553440 B1 EP0553440 B1 EP 0553440B1
Authority
EP
European Patent Office
Prior art keywords
guide
guide sleeve
sleeve according
webs
partial 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.)
Expired - Lifetime
Application number
EP92120693A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0553440A1 (de
Inventor
Hans Jürgen Bauer
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.)
Suspa Compart AG
Original Assignee
Suspa Compart AG
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 Suspa Compart AG filed Critical Suspa Compart AG
Publication of EP0553440A1 publication Critical patent/EP0553440A1/de
Application granted granted Critical
Publication of EP0553440B1 publication Critical patent/EP0553440B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a guide bushing according to the preamble of claim 1.
  • the invention has for its object to provide a guide bush of the generic type that is easy to manufacture and gives the housing of the length adjustment element an exact, firm, lateral guidance.
  • the measures according to the invention ensure that the machining, for example broaching, of the part-cylinder surfaces serving as guide surfaces ensures very precise guidance of the housing of the length adjustment element.
  • the part-cylinder surfaces can be formed very precisely on the guide webs projecting radially from the inner surface of the guide bushing in a very simple manner, without the chips running off during processing being able to lead to crushing and thus to surface damage.
  • the guide webs are very stiff together with the guide bush, so that no unintentional radial movements of the housing of the length adjustment element are possible.
  • a guide bushing 1 is arranged in a guide tube 2, only indicated, of a height-adjustable chair column.
  • chair columns are known for example from EP-A-0 325 726 (corresponding to US-A-4 899 969), to which express reference is made.
  • the guide bushing 1 has a sliding bushing 3, on the outside of which rib webs 5 projecting outward radially to the central longitudinal axis 4 are formed. With these rib webs 5, the guide bush 1 is supported radially against the inner wall 6 of the guide tube 2. An upper annular collar 7 fixes the guide bush 1 in the axial direction with respect to the guide tube 2. In addition, the guide bush 1 is pushed into the guide tube 2 with a press fit.
  • a housing 9 of an only indicated gas spring 10 is guided so as to be displaceable in the direction of the axis 4.
  • This gas spring 10 together with the guide tube 2 and the guide bush 1 essentially form the mentioned height-adjustable chair column.
  • the housing 9 of the gas spring 10 can be its direct housing, or an additional support tube surrounding the gas spring 10, as is also known from EP-A-0 325 726 (corresponding to US-A-4,899,969), whereupon is also expressly referred to.
  • the guide sleeve 1 is made of plastic, preferably a polyacetal, and is made in one piece by injection molding.
  • Guide webs 11 are formed on the inner surface 8 of the sliding bush 3, which extend over the full axial length of the sliding bush 3 and project radially from the inner surface 8 to the axis 4. They are formed in one piece with the sliding bush 3.
  • the guide webs 11 Before a calibration process to be explained by broaching, the guide webs 11 have an oversize to the axis 4. This is reduced by the broaching process, so that 11 partial cylinder surfaces 12 are then formed on the guide webs, which form the actual guide surfaces relative to the housing 9 of the gas spring 10.
  • Recesses 13 run between adjacent guide webs 11 as parts of the inner surface 8.
  • the radius R12 of the partial cylinder surfaces 12 from the axis 4 and the radial distance R13 of the recesses 13 from the axis 4 with respect to the radius R9 of the housing 9 apply Relationship R13> R12 ⁇ R9, where R12 is at most a few hundredths of a millimeter, for example up to 0.05 mm, larger than R9.
  • a broach which has broaching teeth with a circular cutting edge extending over its entire circumference.
  • the cleared chips have a width that corresponds at most to the width b of the partial cylinder surfaces 12.
  • the chips cleared from adjacent partial cylinder surfaces 12 are interrupted in the area of the recess 13 lying between them. This type of broaching of the partial cylinder surfaces 12 leads to the fact that they are cleared very smoothly with a high surface quality, because the plastic chips produced during broaching can run off well. There is no danger that they will get stuck between the cutting teeth of the broaching tool and the inner surface 8 of the sliding bush 3 and damage the surface of the part-cylinder surfaces 12.
  • the sum of the partial cylinder surfaces 12 forms the actual guide surface of the sliding bush 3 with respect to the housing 9 of the gas spring 10.
  • the strength is further increased by the fact that the guide webs 11 are each arranged in radial overlap with the rib webs 5, so that from the housing 9 via the guide webs 11 on the slide bush 3, executives extending radially to the axis 4 run directly into each of the Ribs 5 associated with guide webs 11 can be introduced.
  • the guide webs 11 run in a straight line and parallel to the axis 4, they can also be tortuous, that is to say run helically with a large pitch.
  • the slope is expediently at least so large that two adjacent guide webs overlap one another at least once over the length of the guide webs 11. In this way it is achieved that the housing 9 is supported radially at least over its entire circumference by the partial cylinder surfaces.
  • the slope can also be greater, so that multiple overlap of adjacent guide webs is achieved over their length.
  • a gas spring 10 as a pneumatic or hydropneumatic length adjustment element
  • a purely mechanical length adjustment element for example with a mechanical spring, can also be provided, which has a cylindrical housing or a cylindrical guide part for guidance on the part-cylinder surfaces 12 having.
  • the guide bushing 1 in the embodiment described can also be used as a pure rotary guide, ie without the possibility of an axial displacement.

Landscapes

  • Bearings For Parts Moving Linearly (AREA)
  • Chairs Characterized By Structure (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Fluid-Damping Devices (AREA)
  • Legs For Furniture In General (AREA)
  • Vibration Dampers (AREA)
EP92120693A 1992-01-25 1992-12-04 Führungsbüchse für eine längenverstellbare Säule für Stühle, Tische od.dgl Expired - Lifetime EP0553440B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9200884U 1992-01-25
DE9200884U DE9200884U1 (de) 1992-01-25 1992-01-25 Führungsbüchse für eine längenverstellbare Säule für Stühle, Tische o.dgl.

Publications (2)

Publication Number Publication Date
EP0553440A1 EP0553440A1 (de) 1993-08-04
EP0553440B1 true EP0553440B1 (de) 1994-06-15

Family

ID=6875389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120693A Expired - Lifetime EP0553440B1 (de) 1992-01-25 1992-12-04 Führungsbüchse für eine längenverstellbare Säule für Stühle, Tische od.dgl

Country Status (8)

Country Link
US (2) US5413414A (ru)
EP (1) EP0553440B1 (ru)
JP (1) JP2604962Y2 (ru)
KR (1) KR0127791Y1 (ru)
DE (2) DE9200884U1 (ru)
ES (1) ES2056683T3 (ru)
MX (1) MX9300376A (ru)
TR (1) TR26401A (ru)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242475A1 (de) * 1992-12-16 1994-06-23 Suspa Compart Ag Führungsbuchse, insbesondere für längenverstellbare Stuhl-Säule und Stuhl-Säule mit derartiger Führungsbuchse
DE9402656U1 (de) * 1994-02-18 1994-04-14 Suspa Compart Ag, 90518 Altdorf Führungsbüchse und längenverstellbare Säule mit Führungsbüchse
JP3550213B2 (ja) * 1994-07-14 2004-08-04 株式会社大宇エレクトロニクス 真空掃除機の輪
US5556170A (en) * 1995-08-22 1996-09-17 Lai; Yu-Shan Sleeve structure of an office chair
ES2143338B1 (es) * 1996-04-11 2000-12-01 Gain Gas Technique Sl Cilindro hidraulico.
US5702083A (en) * 1996-04-17 1997-12-30 Lai; Shiang-Hwey Pneumatic cylinder of a pneumatic lever-lift chair, and its assembly process
US5915659A (en) * 1996-07-08 1999-06-29 Scannell, Jr.; Gerard Adjustable keyboard podium
DE19636202C2 (de) * 1996-09-06 1999-12-30 Stabilus Gmbh Führungsbuchse für teleskopisch ineinander verschiebbare Teile
US5797685A (en) * 1996-11-22 1998-08-25 Chrysler Corporation Gear shift tube support
KR200157184Y1 (ko) * 1996-11-25 1999-09-15 황영재 의자높이 조절장치의 안내 슬리브
DE19710095B4 (de) * 1997-03-12 2011-02-03 Ise Automotive Gmbh Multifunktionsführungsring zur Radialkraftaufnahme und spiel- und reibungsfreier Axialführung zylindrischer Bauteile
DE29705568U1 (de) * 1997-03-27 1998-07-23 T.R.-PLAST Kunststoff-Verarbeitung, 92318 Neumarkt Führungsbuchse für in einem Standrohr einsetzbaren Federrohr, insbesondere für Bürostühle
US6371421B1 (en) * 1997-08-23 2002-04-16 Samhongsa Co., Ltd. Device for controlling the height of a swivel chair
US6224264B1 (en) 1997-10-16 2001-05-01 Suspa Holding Gmbh Guide bush and adjustable length column with guide bush
EP0958763A1 (de) 1998-05-15 1999-11-24 Cabex AG Stütze
DE10039808A1 (de) * 2000-08-16 2002-02-28 Volkswagen Ag Kunststoff-Gleitlagerbuchse und Pedalanordnung
KR20020081844A (ko) * 2001-04-20 2002-10-30 주식회사 삼홍사 칼럼 유니트
KR100436415B1 (ko) * 2001-07-24 2004-06-16 주식회사 삼홍사 칼럼 유니트 및 칼럼 유니트의 튜브 가이드
DE10227201C1 (de) * 2002-06-18 2003-09-04 Stabilus Gmbh Möbelsäule
US6769788B1 (en) * 2003-01-27 2004-08-03 Jeffrey Keith Kellough Flashlight sleeve
US20050254887A1 (en) * 2004-05-14 2005-11-17 Shurhold Industries, Inc. Releasable locking mechanism
US8127639B2 (en) * 2005-08-16 2012-03-06 Steering Solutions IP Holding Company, a Delaware corporation Sleeve bearing for collapsible steering column
DE102005059188B4 (de) 2005-12-12 2007-10-25 Heinemack Gmbh Restaurantsystem
US8561422B2 (en) * 2006-08-10 2013-10-22 Wayne Jackman Portable canned drink cooler and dispenser
DE102007021165A1 (de) * 2007-05-05 2008-11-06 Preh Gmbh Bedienelement für ein Kraftfahrzeug
WO2009076453A2 (en) * 2007-12-10 2009-06-18 Weber Aircraft Lp Expansion and retraction mechanisms for moveable tray tables
DE102009042197A1 (de) * 2009-09-18 2010-12-16 Aktiebolaget Skf Gleitelement für eine Teleskopführung und Teleskopführung
TW201215785A (en) * 2010-10-15 2012-04-16 Risun Expanse Corp Bearing and structure of bearing assembly and rotation device
DE102013102674B4 (de) 2013-03-15 2015-02-05 Heinemack Gmbh Restaurantsystem
DE102013102687B4 (de) * 2013-03-15 2015-03-19 Heinemack Gmbh Restaurantsystem
US9499083B2 (en) 2013-04-01 2016-11-22 Zodiac Seats Us Llc Tray table structure
DE102013108065B4 (de) * 2013-07-29 2015-04-09 Benteler Automobiltechnik Gmbh Elastomerlager
CN106051020A (zh) * 2016-07-29 2016-10-26 常州市莱特气弹簧有限公司 气动杆的后顶套
US10487901B2 (en) 2017-01-09 2019-11-26 Beijingwest Industries Co., Ltd. Damping strut
DE202023101841U1 (de) 2023-03-31 2024-07-03 Igus Gmbh Spülbare Schlitten-Schienenanordnung

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US1377866A (en) * 1920-05-29 1921-05-10 White Joseph Walwyn Lubrication of machinery
US2348274A (en) * 1943-07-28 1944-05-09 Evender S Aker Shaft journaling means
US2539782A (en) * 1948-07-29 1951-01-30 John F A Kell Bearing sleeve
CH514317A (de) * 1969-06-19 1971-10-31 Bauer Fritz Hubvorrichtung zum stufenlosen Höherverstellen einer Tragfläche, insbesondere Sitzfläche von Stühlen oder Hockern
US3790119A (en) * 1971-08-31 1974-02-05 F Bauer Energy storing device, particularly a blockable pneumatic spring
US3923280A (en) * 1975-03-21 1975-12-02 Harter Corp Adjustable support column for a pivotal chair
JPS53139045A (en) * 1977-05-10 1978-12-05 Mitsubishi Motors Corp Bearing device
DE8422413U1 (de) * 1983-07-29 1985-11-21 Fritz Bauer + Söhne oHG, 8503 Altdorf Längenverstellbare Gasfeder für eine blockierbare Hubvorrichtung zum strufenlosen Verstellen von Stuhlsitzen, Tischplatten oder ähnlichen Möbelstücken
GB8609763D0 (en) * 1986-04-22 1986-05-29 Eurocastors Ltd Bearings for wheels
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
DE3833959A1 (de) * 1988-10-06 1990-04-12 Bauer Fritz & Soehne Ohg Laengenverstellbare saeule fuer stuehle, tische oder dergleichen
DE4003245C2 (de) * 1990-02-03 1997-08-21 Stabilus Gmbh Führung für teleskopartig ineinander verschiebbare zylindrische Teile
DE4024392A1 (de) * 1990-08-01 1992-02-06 Suspa Compart Ag Verfahren zum herstellen einer gleitflaeche an einer aus kunststoff bestehenden fuehrungsbuechse fuer eine hoehenverstellbare stuhlsaeule
JPH0553554U (ja) * 1991-12-27 1993-07-20 東海金属工業株式会社 軸 受

Also Published As

Publication number Publication date
MX9300376A (es) 1994-02-28
KR0127791Y1 (ko) 1998-11-02
JPH0744153U (ja) 1995-11-07
DE59200245D1 (de) 1994-07-21
KR930017654U (ko) 1993-08-20
DE9200884U1 (de) 1992-04-09
US5413414A (en) 1995-05-09
ES2056683T3 (es) 1994-10-01
US5496115A (en) 1996-03-05
JP2604962Y2 (ja) 2000-06-12
EP0553440A1 (de) 1993-08-04
TR26401A (tr) 1995-03-15

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