EP0050465A1 - Höhenverstellvorrichtung für Stühle, Tische o. dgl. - Google Patents

Höhenverstellvorrichtung für Stühle, Tische o. dgl. Download PDF

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Publication number
EP0050465A1
EP0050465A1 EP19810304764 EP81304764A EP0050465A1 EP 0050465 A1 EP0050465 A1 EP 0050465A1 EP 19810304764 EP19810304764 EP 19810304764 EP 81304764 A EP81304764 A EP 81304764A EP 0050465 A1 EP0050465 A1 EP 0050465A1
Authority
EP
European Patent Office
Prior art keywords
control lever
stay
fitting
push rod
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.)
Granted
Application number
EP19810304764
Other languages
English (en)
French (fr)
Other versions
EP0050465B1 (de
Inventor
Kazutoshi Ogiso
Kazuo Nakamura
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.)
Yanagisawa Seiki Seisakusho KK
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Yanagisawa Seiki Seisakusho KK
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 Kayaba Industry Co Ltd, Yanagisawa Seiki Seisakusho KK filed Critical Kayaba Industry Co Ltd
Publication of EP0050465A1 publication Critical patent/EP0050465A1/de
Application granted granted Critical
Publication of EP0050465B1 publication Critical patent/EP0050465B1/de
Expired 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
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/10—Tables with tops of variable height with vertically-acting fluid cylinder

Definitions

  • the present invention relates to a device for fitting a control lever of a height adjustable stay.
  • a device for fitting a control lever of a height adjustable stay damper as a part of a stay of, for example, a chair, table, etc., which is composed of a working fluid receiving the action of enclosed gas pressure, a cylinder slidably containing a piston positioned to separate the fluid into two chambers, and a piston rod connected at its one end with said piston and extending-flexibly at its other end from the end of the cylinder.
  • the control lever for height adjustment of a stay damper is provided with a pivot hole at a specific point of the lever, and is fitted by a horizontal pivot put through the pivot hole onto a bracket protruded from the stay damper or under the seat, etc.
  • control lever is restricted in the direction of fitting and it is necessary to insert a small pivot and to contrive a means for preventing the drop of the pivot.
  • a pivot hole is formed in the lever, stress is concentrated at the lower or upper portion around the pivot hole, being liable to cause breaking.
  • snap fitting method for stays of chairs is known, for example, as disclosed in the gazette of UK Patent No. 1,510,028.
  • a piston is slidably provided in a cylinder, and a communicating valve is provided in a hollow piston rod connected to the piston.
  • the communicating valve is operated externally by a control lever and a push rod.
  • the push rod is connected with the control lever, with the tip of the push rod movably engaged with a given portion of the control lever, and in this case, a snap spherical surface, snap ring groove, etc.
  • a cylinder 9 is filled with a working fluid receiving the action of enclosed gas pressure, and a piston (not illustrated) slidably provided in the cylinder 9, to separate two working fluid chambers is connected with an end of a piston rod 10, the other end of the piston rod 10 being flexibly protruded upward from the end of the cylinder 9.
  • control lever 15 when the control lever 15 is tilted downward in Y direction in the drawing, the lever presses down the push rod 12 with the upper edge of the opening 13b as the fulcrum 13b', and the seat, etc. can be adjusted to any desired given height.
  • control lever 15 is tilted in either direction, upward or downward, the push rod 12 can be pressed down, without causing any error of operation conveniently.
  • the control lever 15 is prevented from slipping out, by the engagement between the head of the push rod 12 and the engagement groove 14, and if it is once : fitted, it cannot slip out. Furthermore, by the raising force received by the push rod 12, the control lever 15 is -pressed to the upper edges of both the openings 13a and 13b, to be kept firm.
  • a cylinder 9 filled with a working fluid receiving the action of enclosed gas pressure contains a piston (not illustrated) slidably to separate two fluid chambers, and a piston rod 10 is connected at its one end to the piston, and protruded at the other end flexibly upward from the end of the cylinder.
  • a thread portion lla is formed, and at the center of a cup-shaped cylindrical wall member 17 to be fitted to a seat, a through hole for the piston rod and a thread portion 18 are formed. Through these thread portions lla and 18, the cylindrical wall member 17 is detachably fitted to the piston rod 10.
  • the control lever 20 can be pressed down against the push rod 12 within the range of l 1 , to release the engagement between the engagement grooves 19a and 19b and the upper edges of the openings 21 and 22, and in this state, it can be pulled rightward for example in Fig. 2, to be pulled out, with the lower surface and the taper surface 20a of the lever 20 sliding on the head of the push rod 12. Therefore, the control lever 20 can be freely and simply fitted and removed, to allow easy exchange, repair, etc. of parts.
  • control lever If the control lever is tilted upward in X direction in the drawing, the tip of the lever is tilted downward with the upper edge of the opening 22 as the fulcrum b, to press down the push rod 12, opening the communicating valve of the piston section, thereby allowing the communication of the working fluid between the fluid chambers. Therefore, by making the piston and the piston rod 10 slide, the seat, etc. can be adjusted to a given height. If the control lever 20 is released, the-seat, etc. can be locked and held at a desired position.
  • control lever 20 is tilted downward in Y direction in the drawing, the rear end of the lever 20 is tilted downward, to press down the push rod 12, and the seat, etc. can be adjusted to a given desired height.
  • a push red 26 for operating a communicating valve for opening or closing the communication passage of the piston section is inserted at the center of the piston rod 25, and the upper end of the push rod 26 is protruded from the end of the piston rod 25 at the inside center of the cylindrical wall member 24.
  • an opening 27 of a rectangular, oval or oblong hole is provided to oppose a square engagement step 28, on a straight line with the push rod 26 at the center.
  • the stay damper shown in Fig. 4 as a still further embodiment is substantially the same as that of Fig. 3, and is different only in the forms of the step and the cylindrical wall member.
  • the upper portion of a cylindrical wall member 31 to be fitted to a seat or table is formed as a truncated cone by solid molding, and an inclined step 34 is provided between a conical portion 32 and a cylindrical portion 33, to make the inside wall of the inclined step 34 correspond to the step 28 of Fig. 3.
  • An inside cylinder 44 is flexibly inserted in an outside cylinder 51, to form a stay A.
  • a thread portion 43 is provided at the upper end of a piston rod 42, and is screwed into the center of a holding plate 45 fixed by welding, etc. to the upper portion of the inside cylinder 44. By adjusting the amount of screwed engagement, the penetration of the piston rod 42 into the cylinder 46 can be selected as desired.
  • a pair of openings 47 and 47b are provided, to have a control lever 48 inserted through.
  • the cylindrical wall portion with opposing openings provided in the present invention to have the control lever to be inserted through is made detachable from the piston rod with the push rod protruded, or from the end of the cylinder, the control lever can be easily removed even after it is fitted once, for exchange of the stay damper itself, for advantageous re-use of it for a new stay damper.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Fluid-Damping Devices (AREA)
EP19810304764 1980-10-17 1981-10-13 Höhenverstellvorrichtung für Stühle, Tische o. dgl. Expired EP0050465B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14524680A JPS5769811A (en) 1980-10-17 1980-10-17 Manipulation lever attaching apparatus of height adjustable support post
JP145246/80 1980-10-17

Publications (2)

Publication Number Publication Date
EP0050465A1 true EP0050465A1 (de) 1982-04-28
EP0050465B1 EP0050465B1 (de) 1985-03-27

Family

ID=15380692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810304764 Expired EP0050465B1 (de) 1980-10-17 1981-10-13 Höhenverstellvorrichtung für Stühle, Tische o. dgl.

Country Status (3)

Country Link
EP (1) EP0050465B1 (de)
JP (1) JPS5769811A (de)
DE (1) DE3169577D1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325798A1 (de) * 1983-07-16 1985-01-24 Friedrich W. Dauphin, Bürositzmöbelfabrik, 8561 Offenhausen Gasfeder, insbesondere zum einstellen von rueckenlehnen von stuehlen, wie buerodrehstuehlen u.a.
GB2168453A (en) * 1984-12-13 1986-06-18 Michael Downie Gas struts
EP0362038A1 (de) * 1988-09-30 1990-04-04 Airaxs.A. Regelvorrichtung für eine sperrbare Gasfeder
FR2746273A1 (fr) * 1996-03-25 1997-09-26 Preux Sa Ets Table de lit d'hopital perfectionnee
AU715799B2 (en) * 1996-10-15 2000-02-10 Workspace Commercial Furniture Pty Ltd Seat height adjuster mechanism
CN114193404A (zh) * 2021-12-07 2022-03-18 昆山十全塑胶五金产品有限公司 升降式自行车维修架

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9012776U1 (de) * 1990-09-07 1991-03-14 Hartmann, Siegbert, 4972 Löhne Belastungsabhängig absenkbare Lagerung für die Federleisten eines Lattenrostes am Bettrahmen
DE10131523B4 (de) * 2001-07-02 2004-02-05 Girsberger Holding Ag Auslöseeinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505100A (en) * 1948-04-30 1950-04-25 Richard R Cramer Adjustable stool
DE1913801A1 (de) * 1969-03-19 1970-10-08 Wilde & Spieth Teleskoprohrsaeule fuer Sitzmoebel
GB1510028A (en) * 1974-12-16 1978-05-10 Stabilus Gmbh Adjustable supporting column

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505100A (en) * 1948-04-30 1950-04-25 Richard R Cramer Adjustable stool
DE1913801A1 (de) * 1969-03-19 1970-10-08 Wilde & Spieth Teleskoprohrsaeule fuer Sitzmoebel
GB1510028A (en) * 1974-12-16 1978-05-10 Stabilus Gmbh Adjustable supporting column

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325798A1 (de) * 1983-07-16 1985-01-24 Friedrich W. Dauphin, Bürositzmöbelfabrik, 8561 Offenhausen Gasfeder, insbesondere zum einstellen von rueckenlehnen von stuehlen, wie buerodrehstuehlen u.a.
DE3325798C2 (de) * 1983-07-16 1998-09-17 Buerositzmoebelfabrik Friedric Gasfeder zum Einstellen von Rückenlehnen von Stühlen, wie Bürodrehstühlen u.a.
GB2168453A (en) * 1984-12-13 1986-06-18 Michael Downie Gas struts
EP0362038A1 (de) * 1988-09-30 1990-04-04 Airaxs.A. Regelvorrichtung für eine sperrbare Gasfeder
FR2637395A1 (fr) * 1988-09-30 1990-04-06 Airax Sa Dispositif de commande pour ressort a gaz blocable
US4989698A (en) * 1988-09-30 1991-02-05 Airax Control device for a lockable gas spring
FR2746273A1 (fr) * 1996-03-25 1997-09-26 Preux Sa Ets Table de lit d'hopital perfectionnee
AU715799B2 (en) * 1996-10-15 2000-02-10 Workspace Commercial Furniture Pty Ltd Seat height adjuster mechanism
CN114193404A (zh) * 2021-12-07 2022-03-18 昆山十全塑胶五金产品有限公司 升降式自行车维修架

Also Published As

Publication number Publication date
DE3169577D1 (en) 1985-05-02
JPS646764B2 (de) 1989-02-06
EP0050465B1 (de) 1985-03-27
JPS5769811A (en) 1982-04-28

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