EP0406706B1 - Dispositif de verrouillage pour chaises de bureau - Google Patents

Dispositif de verrouillage pour chaises de bureau Download PDF

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Publication number
EP0406706B1
EP0406706B1 EP90112383A EP90112383A EP0406706B1 EP 0406706 B1 EP0406706 B1 EP 0406706B1 EP 90112383 A EP90112383 A EP 90112383A EP 90112383 A EP90112383 A EP 90112383A EP 0406706 B1 EP0406706 B1 EP 0406706B1
Authority
EP
European Patent Office
Prior art keywords
blocking
locking
bolt
disposed
members
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
EP90112383A
Other languages
German (de)
English (en)
Other versions
EP0406706A1 (fr
Inventor
Heinz-Peter Wilhelm Suhr
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.)
Koenig and Neurath AG
Original Assignee
Koenig and Neurath 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 Koenig and Neurath AG filed Critical Koenig and Neurath AG
Priority to AT90112383T priority Critical patent/ATE83626T1/de
Publication of EP0406706A1 publication Critical patent/EP0406706A1/fr
Application granted granted Critical
Publication of EP0406706B1 publication Critical patent/EP0406706B1/fr
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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs

Definitions

  • the invention relates to a locking device for chairs, in particular office chairs according to the preamble of the main claim, namely for chairs on which the seat and / or the backrest are cushioned adjustable with respect to the chair frame and can be locked in at least one position with a locking device on the frame.
  • Tilt-adjustable work or office chairs are known in the most varied of shapes and equipped with a wide variety of adjustment mechanisms, and usually a suspension comfort is also provided, which is achieved by springs included in the adjustment mechanism. Such chairs must be lockable in the normal or rest position and, if desired, also in further intermediate positions, provided that the area outside the normal position is not intended to act as an elastically sprung area. Locking devices on such chairs are also known in the most varied of embodiments, as a rule in the respective adaptation and integration to the respective adjustment mechanism or the given structural design of the chairs.
  • an incline-adjustable chair with a locking device in which two identical locking members, which are spaced apart from one another and are inclined in the same direction and are arranged at an inclination in the same direction and are fixedly inclined in the same direction, with their identical, s -shaped slots encompass a locking pin on the chair frame.
  • a blocking of the locking position within the locking device is not possible and without additional locking means, but which could only be provided on the actuating lever, a securely blocked locking position is not guaranteed.
  • this is intended at all, only a very limited number of engagement recesses for several locking positions could be accommodated in locking devices of this type, since the locking lugs between two recesses must have enough "meat" for reasons of stability.
  • the locking device Due to the design of the locking device according to the invention, it is only loosely attached to the aforementioned axis or the axle piece and is only connected to the entire actuating mechanism at this point, assumes an exposed position to this extent and can therefore also be installed very easily.
  • the locking device is preferably designed in such a way that one locking member is dimensioned a maximum of twice as wide as the other and is provided with a recess which forms a groove with the other locking member, in which a two-armed pivot lever is mounted on the wider locking member, the lower lever arm with a driving pin in a slot guide of the narrower locking member engages and on whose other lever arm the actuator attached to the wider locking member engages and between the and the wider locking member the spring is arranged clamped.
  • the two-armed swivel lever can advantageously be integrated into the locking device, which facilitates the unlocking of the lock.
  • the locking device is in principle very simple and in particular can only be coupled at one point to a part of the seat and / or the backrest that is inclined, i.e. does not require any specific adaptation to the adjustment mechanism, such a locking device can be largely independent of the specific design of the adjustment mechanisms of chairs of this type are used.
  • the bearing eyes of the two locking members receiving the axis are advantageously closed with detachable bearing covers.
  • the backrest 2 which is kinked under the seat 1, pivots about the joint I and the seat 1, in addition somewhat displaceably about the joint II, the seat 1 and the backrest 2 being articulated with one another in the axis 3 are coupled. If the backrest 2 is inclined in the direction of the arrow C, the seat 1 is accordingly taken along in the direction of the arrow D.
  • the locking device is articulated on the axis 3 and, like a clamp, comprises the locking bolt 6 arranged stationary on the frame 7.
  • the locking device can be pivoted from two relative to one another about the common axis 3, which belongs to the seat 1 and in this case also to the backrest 2 and can be moved therewith by means of an actuator 4, formed against each other with a spring 5 to the locking pin 6 of the frame 7 in the locking position and provided with mutually aligned locking slots 8, 9 locking members 10, 11.
  • the locking slots 8, 9 are penetrated by the locking pin 6 and have a length L which corresponds to the predetermined maximum inclination setting of the seat and backrest.
  • the outer contours of the two locking members 10 and 11 are concerned, they are identical, as can be seen from FIG. 6, which corresponds to the locking position of both locking members.
  • the locking slot 8 in the locking member 10 according to FIG. 2 has the shape shown, it being essential that in the lower region a locking lug 14 projects into the slot. Notwithstanding this, the locking slot 9 is formed in the other locking member 11, which is a simple slot slot, at the lower end of which a cross section of the locking pin 6 adapted lateral recess 9 'is provided, through which the locking lug 15 is limited at the bottom. It is also essential that the locking lug 15 is arranged radially higher than the other locking lug 14 on the locking member 10 about the locking pin cross-section with respect to the common axis 3. If these locking members 10, 11 are placed immediately adjacent to one another on the axis 3, then they turn this in the sense of FIG. 6, which corresponds to the locked position.
  • the locking pin is encompassed or clasped by the two locking lugs 14, 15, which means that the axis 3 can no longer move with respect to the locking pin 6, ie seat 1 and backrest 2 are also blocked in normal or rest position.
  • the compression spring 5, which spreads itself on the locking members 10, 11, cannot have an effect on the locking members, since this is opposed by the locking bolt 6 passing through the locking members.
  • the one locking member 11 is dimensioned approximately twice as wide as the other and provided with a recess 16 (FIG.
  • an actuating lever arranged on the side of the chair is designed, for example, in the form of a construction train Actuator 4 actuated and compressed by the pivot lever 19, the compression spring. Since the pivot lever 18 is mounted on the wider locking member 11 with a bolt 24 and on the other hand engages with a driver pin 20 in the slot guide 21 of the narrower locking member 12, the locking members are pivoted relative to one another and with respect to the locking bolt so that the two locking lugs 14, 15th release the locking bolt, the two locking slots 8, 9 being assigned to each other in such a way that there is an elongated hole guide for the locking bolt, the flanks of which are formed on the one hand by the edge 8 'of the locking slot 8 and on the other hand by the edge 13' of the locking slot 9.
  • This elongated hole defined by both locking slots has the total length L, as indicated in FIGS. 2, 4.
  • a chair according to FIG. 1 with seat 1 and backrest 2 can be rocked to a certain extent, specifically in an inclination range which is predetermined by the length L of the slot.
  • the backrest and seat follow the body movements by a corresponding cushioning of the adjustment mechanism, which requires no further explanation here.
  • the tension cord 4 is relieved by releasing the control lever (not shown), the length of the rocking path is shortened by the cross section of the locking pin 6.
  • the locking device can be further developed in such a way that in addition to the locking in the normal position, further locking positions can be assumed.
  • the slot 9 there is in the flank 13 the slot 9 at least one further recess 22 and this opposite a locking bolt blocking extension 23 arranged on the slot 8 of the other locking member 10 on the opposite slot flank 12.
  • the locking members 10, 11 shown in FIG. 9 and designed somewhat differently in their outer shape are in this case equipped with a compression spring 5 arranged below the locking slots.
  • the locking members are of the same width, but have lateral and mutually directed extensions, between which the compression spring is arranged.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Pens And Brushes (AREA)
  • Interface Circuits In Exchanges (AREA)

Claims (5)

  1. Dispositif de verrouillage pour sièges, notamment des sièges de bureau, dans lesquels l'assise et/ou le dossier sont suspendus élastiquement de manière réglable en inclinaison par rapport à la structure de siège, et peuvent être verrouillés dans au moins une position sur la structure, le dispositif de verrouillage étant composé de deux organes de verrouillage (10, 11) qui sont montés de manière pivotante sur un axe, au moyen d'un organe de réglage (4), sur l'élément à régler et à encliqueter, et dont les fentes de verrouillage pourvues d'évidements de broche de verrouillage et de longueur correspondant au réglage d'inclinaison maximum, sont traversées par une broche de verrouillage (6) sur la structure de siège,
    caractérisé en ce que les deux organes de verrouillage (10, 11) sont montés pivotants l'un par rapport à l'autre, autour de l'axe commun (3) appartenant à l'assise (1) et/ou au dossier (2) et mobile avec l'assise et/ou le dossier, et sont appliqués en étant dirigés l'un vers l'autre, contre la broche de verrouillage (6) en entourant celle-ci, au moyen d'un ressort (5) agissant sur les deux organes de verrouillage dont les fentes de verrouillage (8, 9) comportent sur des flancs de fentes opposés (12, 13), au moins un talon de verrouillage (14, 15) s'engageant dans la fente respective (8, 9), l'un (15) des talons de verrouillage étant situé radialement plus haut que l'autre (14), en se référant à l'axe commun (3), de manière à ce qu'en position de verrouillage, les deux talons (14, 15) bloquent la broche de verrouillage (6).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le ressort (5) et l'organe de réglage (4) sont disposés en-dessous des fentes de verrouillage (8, 9), entre les deux organes de verrouillage (10, 11).
  3. Dispositif selon la revendication 1,
    caractérisé en ce que l'un (11) des organes de verrouillage présente au maximum une largeur double de l'autre et est pourvu d'un évidement (16) qui forme avec l'autre organe de verrouillage (10), une rainure (17) dans laquelle est monté, sur l'organe de verrouillage (11) le plus large, un levier pivotant (18) à deux bras, dont le bras de levier inférieur (19) s'engage, par l'intermédiaire d'un tourillon d'entraînement (20), dans un guidage en forme de fente (21) de l'organe de verrouillage plus étroit (10), et l'organe de réglage (4) fixé sur l'organe de verrouillage le plus large (11), agit sur l'autre bras de levier (19′) entre lequel et l'organe de verrouillage le plus large (11) est disposé de manière tendue, le ressort (5).
  4. Dispositif selon l'une des revendications 1 à 3,
    caractérisé en ce que dans le flanc de la fente (9) comportant le talon de verrouillage (15), et au-dessus de celui-ci, est disposé au moins un autre évidement (22), et à l'opposé de celui-ci, dans la fente (8) de l'autre organe de verrouillage (10), est disposée une protubérance de blocage ( 23 ) de la broche de verrouillage, sur le flanc de fente (12) opposé.
  5. Dispositif selon l'une des revendications 1 à 4,
    caractérisé en ce que les oeils de paliers (24) des deux organes de verrouillage (10, 11), recevant l'axe (3), sont fermés par des couvercles de palier (25) amovibles.
EP90112383A 1989-07-01 1990-06-29 Dispositif de verrouillage pour chaises de bureau Expired - Lifetime EP0406706B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90112383T ATE83626T1 (de) 1989-07-01 1990-06-29 Sperrvorrichtung fuer stuehle, insbesondere buerostuehle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921757 1989-07-01
DE3921757A DE3921757A1 (de) 1989-07-01 1989-07-01 Stuhl, insbesondere buerostuhl

Publications (2)

Publication Number Publication Date
EP0406706A1 EP0406706A1 (fr) 1991-01-09
EP0406706B1 true EP0406706B1 (fr) 1992-12-23

Family

ID=6384149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112383A Expired - Lifetime EP0406706B1 (fr) 1989-07-01 1990-06-29 Dispositif de verrouillage pour chaises de bureau

Country Status (5)

Country Link
EP (1) EP0406706B1 (fr)
AT (1) ATE83626T1 (fr)
DE (2) DE3921757A1 (fr)
ES (1) ES2037510T3 (fr)
GR (1) GR3006657T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9204874U1 (de) * 1992-04-08 1992-06-17 SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg Sitzträger für Stühle, insbesondere Drehstühle
DE9211244U1 (de) * 1992-08-21 1992-10-29 Friedrich W. Dauphin GmbH & Co, Entwicklungs- und Beteiligungs-KG, 8561 Offenhausen Stuhl

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627252A (en) * 1969-12-22 1971-12-14 Yoshiomi Yamaguchi Tilting chair
DE3727784A1 (de) * 1987-08-20 1989-03-02 Kloeber Gmbh & Co Arbeitsstuhl mit verschwenkbarer sitzschale

Also Published As

Publication number Publication date
ATE83626T1 (de) 1993-01-15
EP0406706A1 (fr) 1991-01-09
ES2037510T3 (es) 1993-06-16
DE59000645D1 (de) 1993-02-04
GR3006657T3 (fr) 1993-06-30
DE3921757A1 (de) 1991-01-10

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