EP0052832B1 - Tête de commande pour ressort pneumatique, notamment pour le réglage de sièges de meubles d'assise - Google Patents

Tête de commande pour ressort pneumatique, notamment pour le réglage de sièges de meubles d'assise Download PDF

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Publication number
EP0052832B1
EP0052832B1 EP81109614A EP81109614A EP0052832B1 EP 0052832 B1 EP0052832 B1 EP 0052832B1 EP 81109614 A EP81109614 A EP 81109614A EP 81109614 A EP81109614 A EP 81109614A EP 0052832 B1 EP0052832 B1 EP 0052832B1
Authority
EP
European Patent Office
Prior art keywords
control
housing
shift
pneumatic
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
EP81109614A
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German (de)
English (en)
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EP0052832A3 (en
EP0052832A2 (fr
Inventor
Egon Bräuning
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Protoned BV
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Protoned BV
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Filing date
Publication date
Application filed by Protoned BV filed Critical Protoned BV
Priority to AT81109614T priority Critical patent/ATE17436T1/de
Publication of EP0052832A2 publication Critical patent/EP0052832A2/fr
Publication of EP0052832A3 publication Critical patent/EP0052832A3/de
Application granted granted Critical
Publication of EP0052832B1 publication Critical patent/EP0052832B1/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 control head for gas spring actuation, in particular for the seat plate adjustment on seating.
  • Gas springs are used in seating, such as chairs, armchairs, vehicle seats and the like, both for the seat height adjustment and for the seat inclination adjustment. While the ejection force of the gas spring piston rod is usually only used for the upward movement of the unloaded seat plate and the piston rod is blocked after setting the desired seat height when adjusting the seat height, the damping-free mobility of the gas spring piston rod in connection with the natural ejection tendency and enable a weighing or rocking effect in cooperation with other suspension elements.
  • the spring ratios can be selected so that the seat arrangement remains "braked" in the current state of equilibrium.
  • the control element of the gas spring must be pressed in permanently, which can lead to complicated locking and unlocking mechanisms on seating furniture or to operating difficulties when adjusting the inclination.
  • the resulting inadequacies also include that a seating position that is currently perceived as pleasant is changed again with a slight shift in body weight.
  • the free mobility of the seat arrangement which is often too extensive as a result of the described control difficulties, also has the consequence that the seat arrangement can move back to an optically or usefully unfavorable starting position after being fully relieved, and / or immediately starts moving again when reloaded.
  • the object of the invention is therefore to provide a means which allows the user of the seating furniture to select the type of seat inclination adjustment on gas spring-supported seating furniture in any hunt of the seating plate by a momentary push of a button.
  • control head to be actuated by an impulse control command for determining the mode of operation of a gas spring is proposed, which control head is characterized by patent claim 1. Embodiments thereof are defined by the dependent claims.
  • 1A, 1B, 1 denotes the upper or piston rod-side end of a gas spring
  • 2 the gas spring piston rod
  • 3 the fastening end provided with a screw thread.
  • This can be inserted directly, or, as shown, with the interposition of a threaded press-in bush 4 ', into the assembly opening 4 of the control head housing 5.
  • the gas spring control rod is designated, which coaxially passes through the piston rod 2 and acts on one (not shown) gas spring valve arrangement.
  • Fig. 1A the gas spring control rod 6 is in the ejected position (piston rod blocked), in Fig. 1 B, however, in the depressed position (piston rod "freely” movable).
  • a locking mechanism, generally designated 7, in the interior of the control head housing 5 defines these two positions of the control rod 6, as will be described in detail later. From this latching mechanism 7, the end 8 of a control sleeve 9, which is designed, for example, in the form of a push button, also protrudes below the upper housing end.
  • protruding coupling members are designated, which can be designed as a pivot pin, for example, when the gas spring is suspended. It goes without saying that the housing 5, which in the design of the gas spring control head according to the invention which is firmly connected to the piston rod 2, can also be provided with differently designed connection means.
  • the housing 5 shown in more detail in FIG. 2 contains a continuous cylindrical recess 11 with a connection section 12 containing the already mentioned assembly opening 4, a (central) guide zone 13 and a centering and coupling section 14 on the actuating side.
  • the one on the left in FIG. 2 the vertical sectional view shown plan view or front view shows the housing 5 seen from the piston rod side.
  • the (middle) guide zone 13 preferably has a number of two to four guide cams 15 which are directed radially inward via a narrowed, offset base bore 13 'and which are arranged uniformly distributed over the circumference of the base bore 13' and are spaced apart from one another by an axially oriented guide groove 16 .
  • the guide cams 15 are provided on their axial end facing the connection section 12 with locking teeth 17, the peripheral profile of which best emerges from FIGS. 3a-c and will be explained later with reference to these figures.
  • a centering and stop sleeve 18 is pressed into the base bore 13 '.
  • the sleeve 18 serves both as a movement limiting element for the control sleeve 9 already mentioned in the latching mechanism 7 and also for centering the end 8 of the control sleeve 9 in the housing 5 designed as a pushbutton element.
  • a differently designed centering and stop means can also be provided. If necessary, a reduction of the base bore 13 ′ that extends at least over part of the sleeve length can also be provided, the movement stop for the control sleeve 9 having to be provided, for example, at the outer ends of the guide grooves 16.
  • the control sleeve 9 is displaceably mounted in the central section of the cylindrical recess 11 located within the guide cams 15 in the housing 5 and, as the relevant front view to the left of the side view of the guide area 9 'shows, corresponding axially oriented guide wedges 19 corresponding to guide area 9', which engage in the guide grooves 16 between the cams 15 and secure the control sleeve 9 against rotation in the housing 5.
  • the control sleeve 9 also has a central blind hole 20 and has on its opening side a toothing 21, the peripheral profile of which is shown in FIGS. 3a-c and will be explained in detail later.
  • the switching element 23 (see also FIGS. 1A, 1B) contains a switching head 24 formed on one end of the centering pin 22, consisting of a disk-shaped stop plate 25 and centering pin 22, axially oriented switching wedges 26 formed uniformly distributed.
  • the switching wedges 26 are like the associated front view 2 to the left of the switching element 23 shown in side view in the main illustration of FIG. 2 shows, just as the guide wedges 19 are dimensioned such that they can be partially inserted into the guide grooves 16 and thereby secure the switching element 23 in the cylindrical recess 11 in the housing 5 against rotation .
  • the ends of the switching wedges 26 facing the centering pin 22 are provided with inclined switching surfaces 27.
  • the inclined surfaces 27 are oriented in the same direction as viewed in the circumferential direction and work together with the locking teeth 17 on the guide cams 15 and on the transport teeth 21 of the control sleeve 9 in the manner described below with reference to FIGS. 3a-c.
  • FIG. 3a shows schematically and in an exploded view, which is only intended for explanatory purposes, the developments of: (I) the guide cams 15 spaced apart by the guide grooves 16 and their locking teeth 17 in the interior of the control head housing 5, (11) the guide region 9 'of the control sleeve 9 with the guide wedges 19 arranged thereon and the end toothing 21; and (111) the switching element 23 or the switching head 24 with the switching wedges 26 arranged thereon, including the oblique switching surfaces 27, and the stop plate 25.
  • the housing containing the guide zone 13 will be described below in accordance with the arrangement of the mechanical parts in the control head and the related construction details 5 as "fixed" component (1), the control sleeve 9 designated as (11) as the actuating member, and the switching element 23 designated as (111) generally referred to as the control member.
  • the (longer) tooth surface 17 'of the locking toothing 17 in the fixed component is referred to as the locking surface and the (shorter) tooth surface 17 "is referred to as the sliding surface.
  • the tooth surfaces 17 ', 17 "and the inclined surfaces 21' are clearly effective here as cam follower surfaces.
  • the spring symbols 28 are intended to indicate that the switching element 23 is always operationally under a pressure force exerted by the gas spring control rod 6 (FIGS. 1A, 1 B), which is supported on the housing 5 via the piston rod end 3.
  • FIG. 3b The components of the control head symbolized and drawn apart in FIG. 3a with (I), (11) and (111) are shown in solid lines in FIG. 3b in the locked position of the gas spring piston rod 2 (FIGS. 1A, 1B), in which the control rod 6 is ejected.
  • the switching element 23 is pushed into its inserted position in the locking mechanism 7.
  • the switching wedge 26 In this position of the components 1, 11 and 111, the switching wedge 26 is caught in the guide groove 16, and its inclined surface 27 lies against the relative feed surface 21 'of the transport toothing 21 on the actuating member (control sleeve 9), which in turn via the Free ends 30 of the wedges 19 is supported on the stop shoulder 29 fixed to the housing.
  • control head described above for the actuation of the control elements of a gas spring thus makes it possible, in a compact arrangement, to provide a latching mechanism 7 with which the two working methods of the gas spring can be selected by pulse actuation: piston rod "blocked” and piston rod “freely movable” can be selected. It is essential that the control head according to the invention can be firmly attached as a self-contained device on the piston rod 2 of the gas spring, and that the mode of operation of the gas spring selected by pulse actuation is maintained after the preselection has been made without external force or control action.
  • This impulse actuation can of course take place in the manner of a push button actuation as well as by other actuation means such as piston-cylinder units or by electromechanical means.
  • the anti-rotation lock of the control sleeve 9 could be achieved with a single guide wedge 19 or with a cross-sectional shape that generally deviates from around.
  • the locking of the switching element 23 can be achieved with differently designed locking zones in the locking teeth 17 fixed to the housing. Finally, this can be profiled in such a way that when switching element 23 is shifted forward, it moves to the right.

Landscapes

  • Fluid-Damping Devices (AREA)

Claims (11)

1. Tête de commande pour l'actionnement d'un ressort pneumatique, notamment pour le réglage des assises de sièges, caractérisée par un corps (5) pouvant être monté, par une liaison de transmission des efforts, sur l'extrémité extérieure (3) de la tige de piston (2) d'un ressort pneumatique, et comprenant des organes de raccordement (10) qui sont destinés à établir une liaison entre la tige de piston (2) du ressort pneumatique et l'assise du siège, un mécanisme de verrouillage (7) logé dans le corps (5) et comportant: un dispositif de guidage (15, 16) relié au corps et possédant des premiers moyens de positionnement (17), un organe de commande (9) mobile guidé en translation dans le dispositif de guidage, qui peut être actionné de l'extérieur du corps et comprend un dispositif d'entraînement (21), un organe de raccordement (23) muni de deuxièmes moyens de positionnement (26), qui peut être amené, par l'actionnement de l'organe de commande (9) et la coopération des premiers et deuxièmes moyens de positionnement (17, 26) et du dispositif d'entraînement (21) précité, successivement dans une première et dans une deuxième positions de verrouillage par rapport au dispositif de guidage solidaire du corps; et une plaque de butée (25) reliée à l'organe de raccordement (23), qui est destinée à agir sur la tige de commande (6) du ressort pneumatique, dont la profondeur de plongée dans le corps (5) dans la direction axiale de la tige de commande (6) du ressort pneumatique est différente dans ta première et dans la deuxième positions de verrouillage.
2. Tête de commande selon la revendication 1, caractérisée en ce que le corps (5) entoure une ouverture de montage cylindrique (4) par laquelle le corps peut être centré axialement sur l'extrémité (3) de la tige de piston (2) du ressort pneumatique, et en ce que les organes de raccordement (10) portés par le corps (5) se trouvent dans un plan qui contient également l'axe longitudinal de la tige de piston du ressort pneumatique.
3. Tête de commande selon la revendication 2, caractérisée en ce que le corps (5) entoure une cavité traversante (11) coaxiale à l'ouverture de montage (4), dans la paroi de laquelle est formé le dispositif de guidage (15, 16) rigidement solidaire du corps, qui est composé d'un certain nombre de bossages de guidage (15) qui font saillie radialement vérs l'intérieur et sont uniformément répartis sur la périphérie de la paroi, et de rainures de guidage (16) situées dans les intervalles entré deux bossages adjacents (15).
4. Tête de commande selon la revendication 3, caractérisée en ce que le dispositif de guidage (15, 16) s'étend sur une partie centrale (13) de cavité (11) du corps et est limite à l'une de ses extrémités par des moyens de butée (18) qui limitent au moins les rainures de guidage (16).
5. Tête de commande selon la revendication 3, caractérisée en ce que la cavité traversante (11) a une forme cylindrique.
6. Tête de commande selon la revendication 4 ou 5, caractérisée en ce que l'organe de commande (9) a une forme cylindrique et contient, sur une partie de sa longueur, un certain nombre de clavettes de guidage (19) qui font saillie radialement sur sa surface et qui s'engagent dans les rainures de guidage (16) du dispositif de guidage, en ce que l'une des extrémités (8) de l'organe de commande (9) présente la forme d'une surface de réception d'une pression et que l'autre extrémité comporte, d'une part, l'orifice d'un perçage coaxial (20) pour le montage rotatif de l'organe de raccordement (23) et, d'autre part, sur la surface annulaire frontale, une denture d'entraînement (21) à profil en zig-zag.
7. Tête de commande selon la revendication 1, caractérisé en ce que l'organe de raccordement (23) est monté mobile en rotation et en translation axiale dans l'organe de commande (9) et en ce que l'organe de raccordement (23) comporte une tête d'accouplement (24) qui porte un certain nombre de clavettes de verrouillage- accouplement (26) présentant des surfaces libres radiales et axiales, et la plaque de butée (25), et un téton de portée (22) qui centre la tête d'accouplement (24) dans l'organe de commande (9).
8. Tête de commande selon l'une des revendications 2 à 7, caractérisée en ce que les éléments du mécanisme de verrouillage sont orientés coaxialement à l'axe du cylindre de l'ouverture de montage (4), en ce que l'organe de raccordement (23) est mobile télescopiquement dans l'organe de commande (9) et les deux organes (23, 9) mobiles télescopiquement conjointement dans le dispositif de guidage (15, 16), et en ce que le dispositif de guidage comporte des moyens d'encliquetage (16, 17) orientés axialement dans lesquels l'organe de raccordement (23) s'engage successivement en fonction d'une impulsion de commande de l'organe de commande (9).
9. Tête de commande selon la revendication 8, caractérisée en ce que les moyens d'encliquetage du dispositif de guidage (15, 16) contiennent, en position frontale, des bossages de guidage (15) présentant des rampes de cames (17', 17") formées sur ces bossages.
10. Tête de commande selon la revendication 6, caractérisée en ce que la denture d'entraînement (21) de l'organe de commande (9) présente des rampes de cames (21', 21") formées sur sa face frontale.
11. Tête de commande selon les revendications 9 et 10, caractérisée en ce que les clavettes (26) de l'organe de raccordement (23) présentent une surface de glissement (27) oblique, qui coopère avec les rampes de cames (17', 17") des bossages de guidage (15) et avec les rampes de cames (21', 21") de l'organe de commande (9).
EP81109614A 1980-11-21 1981-11-11 Tête de commande pour ressort pneumatique, notamment pour le réglage de sièges de meubles d'assise Expired EP0052832B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109614T ATE17436T1 (de) 1980-11-21 1981-11-11 Steuerkopf fuer gasfederbetaetigung, insbesondere fuer die sitzplattenverstellung an sitzmoebeln.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8633/80A CH652902A5 (de) 1980-11-21 1980-11-21 Steuerkopf zur betaetigung der steuerstange der ventilanordnung einer gasfeder.
CH8633/80 1980-11-21

Publications (3)

Publication Number Publication Date
EP0052832A2 EP0052832A2 (fr) 1982-06-02
EP0052832A3 EP0052832A3 (en) 1983-04-20
EP0052832B1 true EP0052832B1 (fr) 1986-01-15

Family

ID=4342877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109614A Expired EP0052832B1 (fr) 1980-11-21 1981-11-11 Tête de commande pour ressort pneumatique, notamment pour le réglage de sièges de meubles d'assise

Country Status (4)

Country Link
EP (1) EP0052832B1 (fr)
AT (1) ATE17436T1 (fr)
CH (1) CH652902A5 (fr)
DE (1) DE3173534D1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325798C2 (de) * 1983-07-16 1998-09-17 Buerositzmoebelfabrik Friedric Gasfeder zum Einstellen von Rückenlehnen von Stühlen, wie Bürodrehstühlen u.a.
DE3602441A1 (de) * 1986-01-28 1987-07-30 Bauer Fritz & Soehne Ohg Laengenverstellbare gasfeder mit permanent-ausloese-einrichtung
CH676417A5 (fr) * 1988-07-15 1991-01-31 Giroflex Entwicklungs Ag
DE4235435A1 (de) * 1992-10-21 1994-04-28 Martin Steifensand Sitzmoebel Sitzträger für Sitzmöbel
DE19502649A1 (de) * 1995-01-28 1996-08-01 Stoll Kg Christof Arretiermechanik für die neigbare Lehne eines Stuhles
US5577804A (en) * 1995-06-30 1996-11-26 Global Upholstery Company Seat height adjustment mechanism for a chair
US5899530A (en) * 1995-08-23 1999-05-04 Global Upholstery Company Control mechanism for a chair
IT242153Y1 (it) * 1996-01-08 2001-06-04 Alta Srl Dispositivo di regolazione dell'inclinazione della seduta in sedie epoltroncine in genere
CA2207192C (fr) * 1997-06-05 2000-10-10 Global Upholstery Company Fauteuil equipe d'un appareil vibro-masseur
ITTO980034A1 (it) 1998-01-16 1999-07-16 Miotto Int Comp Dispositivo meccanico per il controllo della movimentazione sincrona d i sedile e schienale di una seduta.
US6845734B2 (en) * 2002-04-11 2005-01-25 Micron Technology, Inc. Deposition apparatuses configured for utilizing phased microwave radiation
DE10353903A1 (de) 2003-11-18 2005-06-16 Suspa Holding Gmbh Längenverstellbare Druckfeder
US20070102979A1 (en) 2005-10-25 2007-05-10 GLOBAL TOTAL OFFICE an Ontario limited partnership having GLOBAL UPHOLSTERY CO. Adjustment mechanism for a chair and method for replacing a telescoping cylinder in a reconfigurable chair

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB930464A (en) * 1960-04-05 1963-07-03 Roll Tip England Ltd Improvements in writing instruments
DE7831578U1 (de) * 1978-10-23 1979-02-08 Drabert Soehne Minden (Westf.), 4950 Minden Verstelleinrichtung, insbesondere fuer gasfedern von sitzmoebeln

Also Published As

Publication number Publication date
DE3173534D1 (en) 1986-02-27
ATE17436T1 (de) 1986-02-15
EP0052832A3 (en) 1983-04-20
EP0052832A2 (fr) 1982-06-02
CH652902A5 (de) 1985-12-13

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