EP0133523B1 - Ressort à gaz de longueur réglable pour un dispositif de levage verrouillable, permettant le réglage de manière continue de sièges, dessus de table on analogues - Google Patents

Ressort à gaz de longueur réglable pour un dispositif de levage verrouillable, permettant le réglage de manière continue de sièges, dessus de table on analogues Download PDF

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Publication number
EP0133523B1
EP0133523B1 EP84108989A EP84108989A EP0133523B1 EP 0133523 B1 EP0133523 B1 EP 0133523B1 EP 84108989 A EP84108989 A EP 84108989A EP 84108989 A EP84108989 A EP 84108989A EP 0133523 B1 EP0133523 B1 EP 0133523B1
Authority
EP
European Patent Office
Prior art keywords
fixing portion
sliding member
push rod
coaxially
guide
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
Application number
EP84108989A
Other languages
German (de)
English (en)
Other versions
EP0133523A2 (fr
EP0133523A3 (en
Inventor
Hans Jürgen Bauer
Hans-Peter 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.)
Fritz Bauer and Sohne OHG
Original Assignee
Fritz Bauer and Sohne OHG
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 Fritz Bauer and Sohne OHG filed Critical Fritz Bauer and Sohne OHG
Priority to AT84108989T priority Critical patent/ATE33538T1/de
Publication of EP0133523A2 publication Critical patent/EP0133523A2/fr
Publication of EP0133523A3 publication Critical patent/EP0133523A3/de
Application granted granted Critical
Publication of EP0133523B1 publication Critical patent/EP0133523B1/fr
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

Definitions

  • the invention relates to a length-adjustable gas spring according to the preamble of claim 1.
  • Such a length-adjustable gas spring is known from DE-U-7 019 918, the sliding body of which is designed as a pin which is displaceably arranged in a corresponding guide in the generally conical fastening section.
  • it has already become known to produce such sliding bodies entirely from plastic and to arrange them so that they can move in the fastening section without additional guides.
  • It has also become known here, see e.g. CH-A-619604 to screw a coaxial screw into this sliding body from the outside, the head of which forms an outer surface against which an actuating lever for actuating the actuating plunger of the gas spring rests. Due to the adjustability of the screw in the axial direction of the gas spring, the play between the outer surface and the actuating lever can be avoided. The axial adjustment of this screw is tedious.
  • the invention has for its object to develop the generic gas spring so that a simple adjustment of the outer surface of the sliding body in the axial direction is possible.
  • Claim 2 represents a particularly advantageous embodiment of the sliding body.
  • the measures according to claim 3 ensure that, despite the normally conical inner surface of the fastening section, a rotation-free guidance is ensured over the full sliding path of the sliding body, so that no jams can occur between the sliding body and the fastening section.
  • the sliding body is secured against falling out, in particular during transport.
  • the blockable lifting device shown in the drawing for the stepless adjustment of seats or table tops has a lower guide tube 1, which is essentially cylindrical, but in its lower region has a downwardly conically tapering section 2, which is received in a corresponding hub 3 of a base 4 serves.
  • the guide tube 1 is provided near its lower end with a base plate 5 which has an opening 7 which is concentric with the central longitudinal axis 6 of the entire lifting device and thus also the guide tube 1.
  • a length-adjustable, hydraulically or pneumatically lockable gas spring 8 the cylindrical housing of which is located in the upper region of the guide tube 1 and protrudes upwards from it, while its piston rod 10 projects downwards from the housing 9 and with the Base plate 5 is detachably connected.
  • the free end of the piston rod 10 is formed with a reduced-diameter pin 11, on which an axial ball bearing 12 is arranged, the upper race 13 of which is supported against the collar 14 formed at the transition between the pin 11 and the piston rod 10, while the lower race 15 is supported against the base plate 5.
  • a locking ring 16 is attached to the pin, which holds the axial ball bearing 12 in the position shown, even if the lower race 15 is not supported against the base plate 5.
  • the pin 11 passes through the opening 7 with a sufficient radial play of a few tenths to a millimeter, so that the piston rod 10 is not radially clamped relative to the guide tube 1.
  • a washer 17 is pushed onto the pin 11, the diameter of which is larger than the diameter of the opening 7.
  • a securing element 18 is pushed, so that the piston rod 10 of the gas spring 8 is axially fixed but detachable with the guide tube 1 is connected.
  • the continuous circular cylindrical housing 9 of the gas spring 8 is arranged in a tube 20 with a sliding fit, which is also circular cylindrical over its essential length, ie the radial play between the housing 9 and the tube 20 is a few hundredths to a maximum of 1 or 2 tenths of a millimeter.
  • the game is just that the housing 9 of the gas spring 8 in the tube 20th can be inserted or pulled out of this, but at the same time the housing 9 is guided and held radially in the tube 20.
  • This tube 20 which forms a detachable part of the gas spring 8, is provided in its upper region, projecting beyond the housing 9, with a conically tapering fastening section 21, which is used to produce a firm, easy-to-produce plug connection with a correspondingly designed hub 22, which is on the underside a chair, armchair, table top or the like is attached.
  • a sleeve 23 is arranged in the tube 20 in accordance with the tapering of the tube 20, which sleeve is thus axially fixed in the direction of the fastening section 21.
  • the housing 9 of the gas spring 8 is supported axially firmly against this sleeve 23.
  • the housing 9 is held axially in the tube 20 by means of a releasable fastening element 24.
  • This can be a so-called claw, i.e. a ring provided with resilient projections, which can be relatively easily pushed into the tube 20 in one direction, that is to say, against the housing 9, but opposes an opposite movement in that he grips the pipe like a barb.
  • a screwdriver With sufficient effort, for example by means of a screwdriver, it can be easily removed downwards, as a result of which the connection between the housing 9 and the tube 20 is broken in a simple manner.
  • fasteners including screw connections, can also be used.
  • This tube which forms a detachable part of the gas spring 8 is mounted in the usual manner axially displaceably in the guide tube 1, for which purpose this is provided in its upper region with a guide bush 25 made of a suitable plastic.
  • the guide tube 1 and the tube 20 are made of steel.
  • the sleeve 23 consists of a softer material, for example die-cast zinc.
  • Length adjustments of the gas spring 8 and thus height adjustments of the entire lifting device are carried out by actuating an actuating plunger 26 of the gas spring 8 which protrudes from the upper end facing away from the piston rod 10 and which is pressed into the housing 9 to enable the corresponding length adjustments.
  • an upwardly protruding sliding body 27 is arranged in the fastening section 21, which tapers conically upwards and bears with a contact surface 28 against the actuating push piece 26.
  • This sliding body 27 is further provided with retaining fingers 29 which engage resiliently behind a corresponding ring 30 on the sleeve 23, as a result of which the sliding body 27 is secured against the actuating plunger 26 against inadvertent falling out or pulling out of the fastening section 21 while at the same time the bearing surface 28 is largely free of play is.
  • the holding fingers 29 of the sliding body 27 can of course slide freely along the inner surface of the sleeve 23.
  • the actuation takes place by means of a pivotable actuation lever 35 which is mounted in the hub 22 in the usual way and which comes to bear against an axially adjustable outer surface 36 of the sliding body 27.
  • This outer surface 36 is formed by the head of a screw 31 which is screwed into a corresponding coaxial recess 32 in the sliding body 27.
  • the screw 31 and the recess 32 are dimensioned such that the screw 31 provided with a wood screw thread is held in the plastic of the sliding body 27 in a self-locking manner.
  • the screw 31 is screwed into the sliding body 27 in such a way that its outer surface 36 lies against the actuating lever 35 without play, so that it does not have any play noticeable to a user.
  • the sliding body 27 is non-rotatably arranged in the fastening section 21.
  • an upper sleeve-like guide section 33 which bears against the inner wall of the fastening section 21, is designed as a polygon cross section, for example as an octagonal cross section, as can be seen from FIG. 2.
  • the surface lines of this guide section 33 run parallel to one another.
  • the inner wall of the fastening section 21 is designed as an octagonal guide surface 34, which is dimensioned such that the guide section 33 can slide along it without jamming but secured against rotation.
  • the guide surface 34 thus extends downward beyond the guide section 33 by the amount by which the actuating plunger 26 can be inserted into the housing 9.

Landscapes

  • Fluid-Damping Devices (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Chairs Characterized By Structure (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (4)

1. Ressort à gaz de longueur réglable pour un dispositif de levage verrouillable, permettant le réglage de menière continue de sièges, piateaux de table ou analogues, comprenant un boîtier au moins principalement cylindrique de l'une des extrémités duquel une tige (10) de piston sort coaxialement, et de l'autre extrémité duquel un coulisseau d'actionnement (26) sort coaxialement, en vue du réglage en longueur; une zone de fixation qui prolonge coaxialement le boîtier (9), entoure le coulisseau d'actionnement (26) et est destinée à être implantée sur un moyeu monté sur le siège ou sur le plateau de table; et un corps de poussée (27) qui est disposé à coulissement dans la zone de fixation (21), est appliqué contre le coulisseau d'actionnement (26) et présente une surface externe ajustable axialement par filetage afin de porter, dans une large mesure sans aucun jeu, contre un levier d'actionnement (35), caractérisé par le fait que le corps de poussée (27) est guidé dans la zone de fixation (21) sans aucune faculté de rotation, le corps de poussée (27) présentant, à cette fin, une zone de guidage (33) de section non circulaire qui est appliquée contre une surface de guidage (34) de la zone de fixation (21).
2. Ressort à gaz selon la revendication 1, caractérisé par le fait que la zone de guidage (33) et la surface de guidage (34) présentent une section polygonale.
3. Ressort à gaz selon l'une des revendications 1 ou 2, caractérisé par le fait que la zone de guidage (33) et la surface de guidage (34) sont délimitées par des lignes périphériques paralleles l'une à l'autre.
4. Ressort à gaz selon l'une des revendications 1 à 3, en particulier selon la revendication 3, caractérisé par le fait que le corps de poussée (27) est arrêté axialement, vers l'extérieur, dans sa position de repos.
EP84108989A 1983-07-29 1984-07-28 Ressort à gaz de longueur réglable pour un dispositif de levage verrouillable, permettant le réglage de manière continue de sièges, dessus de table on analogues Expired EP0133523B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108989T ATE33538T1 (de) 1983-07-29 1984-07-28 Laengenverstellbare gasfeder fuer eine blockierbare hubvorrichtung zum stufenlosen verstellen von sitzen, tischplatten oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838321901U DE8321901U1 (de) 1983-07-29 1983-07-29 Laengenverstellbare gasfeder fuer eine blockierbare hubvorrichtung zum stufenlosen verstellen von sitzen, tischplatten oder dergleichen
DE8321901U 1983-07-29

Publications (3)

Publication Number Publication Date
EP0133523A2 EP0133523A2 (fr) 1985-02-27
EP0133523A3 EP0133523A3 (en) 1986-04-02
EP0133523B1 true EP0133523B1 (fr) 1988-04-20

Family

ID=6755672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108989A Expired EP0133523B1 (fr) 1983-07-29 1984-07-28 Ressort à gaz de longueur réglable pour un dispositif de levage verrouillable, permettant le réglage de manière continue de sièges, dessus de table on analogues

Country Status (6)

Country Link
EP (1) EP0133523B1 (fr)
JP (1) JPS6054445U (fr)
AT (1) ATE33538T1 (fr)
BR (1) BR8403751A (fr)
DE (2) DE8321901U1 (fr)
ES (1) ES280728Y (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3420528A1 (de) * 1984-06-01 1985-12-05 Stabilus Gmbh, 5400 Koblenz Stufenlos verstellbare hubvorrichtung
US4886288A (en) * 1988-03-25 1989-12-12 Dysarz Edward D Device and method to safely elevate stabilize and lower a wheel chair
DE3836397A1 (de) * 1988-10-26 1990-05-03 Stabilus Gmbh Laengenverstellbarer ausloesestoessel fuer einen ausloesemechanismus von gasfedern zur hoehenverstellung von moebeln
SE467812B (sv) * 1990-05-22 1992-09-21 Dorotea Specialkonstrukt Stativ
DE4227553A1 (de) * 1992-08-20 1994-02-24 Stabilus Gmbh Höhenverstellbare Stützvorrichtung, insbesondere für die Sitzfläche eines Stuhles
US5931536A (en) * 1997-10-16 1999-08-03 Wu; Yao-Chuan Adjustable armrest of a chair
US7017872B2 (en) 2003-10-20 2006-03-28 Attwood Corporation Height adjustable boat seat pedestal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790119A (en) * 1971-08-31 1974-02-05 F Bauer Energy storing device, particularly a blockable pneumatic spring
CH619604A5 (en) * 1977-08-25 1980-10-15 Fehlbaum & Co Apparatus for adjusting the seat height on a swivel chair

Also Published As

Publication number Publication date
BR8403751A (pt) 1985-07-02
ES280728Y (es) 1985-09-16
DE3470451D1 (en) 1988-05-26
ES280728U (es) 1985-02-16
EP0133523A2 (fr) 1985-02-27
JPH0132904Y2 (fr) 1989-10-06
ATE33538T1 (de) 1988-05-15
DE8321901U1 (de) 1985-01-10
EP0133523A3 (en) 1986-04-02
JPS6054445U (ja) 1985-04-17

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