EP0262359A2 - Dispositif de verrouillage de sécurité - Google Patents

Dispositif de verrouillage de sécurité Download PDF

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Publication number
EP0262359A2
EP0262359A2 EP87111716A EP87111716A EP0262359A2 EP 0262359 A2 EP0262359 A2 EP 0262359A2 EP 87111716 A EP87111716 A EP 87111716A EP 87111716 A EP87111716 A EP 87111716A EP 0262359 A2 EP0262359 A2 EP 0262359A2
Authority
EP
European Patent Office
Prior art keywords
locking
latching
seat
backrest
seating furniture
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
EP87111716A
Other languages
German (de)
English (en)
Other versions
EP0262359B1 (fr
EP0262359A3 (en
Inventor
Felix Stucki
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.)
Girsberger Holding AG
Original Assignee
Girsberger Holding 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 Girsberger Holding AG filed Critical Girsberger Holding AG
Priority to AT87111716T priority Critical patent/ATE55681T1/de
Publication of EP0262359A2 publication Critical patent/EP0262359A2/fr
Publication of EP0262359A3 publication Critical patent/EP0262359A3/de
Application granted granted Critical
Publication of EP0262359B1 publication Critical patent/EP0262359B1/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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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 piece of furniture with spring-loaded, coupled backrest-seat adjustment, the seat and backrest of which are fastened to a support, the support being connected to a support arm connected to a standpipe, on which the seat is mounted so that it can be swiveled up and down, and a fixed to the Backrest and back support connected to the support arm via a sliding pivot bearing, the sliding pivot bearing having on the one hand a guide slot or similar guide members and on the other hand a guide element engaging therein.
  • Gas springs are used for the adjustment, which guide the chair parts into the desired position when the locking mechanism is released. The return movement is damped due to the use of these gas pressure springs.
  • gas pressure springs do not always have the desired reliability, above all because of wear and tear during prolonged use. For this reason, it is desirable to use "normal compression or tension springs".
  • the backrest will snap forward from a rear position and hit the back of the user.
  • the displaceable guide element is connected to a first latching part and the support arm to a second latching part of a latching device and that latching projections or latching recesses of the latching parts are oriented transversely to the direction of displacement and have stop surfaces acting in the direction of displacement, which are suitable for a the locking device locking adhesive tension of the stop surfaces 15 are formed when the seat is unloaded or only loaded from the front and at the same time the back is unloaded.
  • EP 0 001 846 B1 A system with normal springs is also known from EP 0 001 846 B1, in which an adjustment is only possible when the backrest is loaded.
  • this system is practically not applicable to seating according to the application, inter alia because of the space requirements to be observed here.
  • the solution according to the invention is a blocking process based on another principle.
  • the adhesive friction connection gives the advantage of a "soft solution” of the locking mechanism compared to the known construction. This is because the locking parts do not have to be guided past barb elements, as in the construction described above. The risk of undesired hooking of the locking elements is thus excluded from the outset.
  • the first latching part connected to the displaceable guide element is designed as a comb-like latching element, in particular with a number of recesses corresponding to at least the number of intermediate positions, then it is sufficient if the second latching part is a locking lever rotatably mounted on the support arm with at least one latching projection in it Locking element can be locked and if the stop surfaces of the locking points of Locking comb and locking lever when seat is relieved or only loaded from the front and the backrest is relieved at the same time by the seat return spring (s) in such a way that the static friction forces are greater than the force required to unlock the locking lever.
  • a major advantage of this construction is its great simplicity.
  • the locking lever is spring-loaded in the disengaging direction and can be engaged and locked against the spring force by means of an operating mechanism. If the operating mechanism with the locking position also has a release position in which the force from the spring acting on the locking lever is greater than the force opposing this force from the adhesive connections of the locking point stop surfaces, the locking lever is released from the locking comb by the spring acting on it raised so that this locking comb and thus also the adjustment mechanism are free and the sitting position can now be adjusted as desired. The force from the spring acting on the locking lever only increases when the forces opposing this force from the static friction connections of the locking point stop surfaces are compensated by a seat or backrest load.
  • a new locking of the now changed seating position is brought about in that the locking lever is brought back into engagement position by an external operating mechanism and is also held in this position by the operating mechanism. If the operating mechanism is brought into the release position, the above-described locking of the static friction connection of the locking point stop surfaces acts until a load is placed on the seat or backrest.
  • a simple and secure connection to the operating mechanism can be achieved in that the locking lever is angled in the area of its mounting in such a way that one leg has at least one locking projection and the other leg is connected to a rod, the other end of which is connected to the operating mechanism mus is connected.
  • the locking lever is rotated around its mounting in such a way that the locking projection or the locking projections engage in the locking points of the displacement element. In this way, the adjustment mechanism is blocked using the operating mechanism.
  • a spring in particular a compression spring, is provided between the operating mechanism and the rod for actuation transmission and if the compression spring mounted on the rod rests against a stop collar of the rod and the actuating element of the operating mechanism engages at the other end of the spring .
  • the seat backrest adjustment is determined in the released position of the operating mechanism and with the sliding element released by the seating position assumed on the chair and maintained against the return spring. If the seat or the backrest are now to be locked in a desired position, the locking points of the locking comb or locking lever must interlock for this purpose. If the locking projections or bulges do not fit each other in a fitting manner, the operating mechanism could not be brought into the locking position due to a rigid connection to the locking lever.
  • the locking position can now be selected immediately after reaching the desired sitting position without paying attention to a possibly existing "tooth-on-tooth position" of the locking mechanism.
  • the locking lever With slight movement from the seated position, the locking lever now automatically engages in the nearest rest area without the risk that the backrest will jump forward in an undesirable manner and the seat position will be changed uncontrollably.
  • Fig. 1 shows the side view of a swivel chair, designated as a whole by 1, with spring-loaded, coupled backrest seat adjustment, the seat 2 and backrest 3 of which are attached to a support 4,
  • the Support 4 has a support arm 6 which is connected to a standpipe 5 and on which the seat 2 is mounted so that it can be swiveled up and down, and has a back support 8 which is fixedly connected to the backrest 3 and the support arm 6 via a sliding pivot bearing 7.
  • the sliding rotary bearing 7 has, as can be seen in FIG. 2, a guide slot 9 and a guide element 10 engaging therein.
  • the displaceable guide element 10 is connected to a first latching part 11 and the support arm 6 to a second latching part 12 of a latching device, the Locking projections 13 or locking recesses 14 of the locking parts 11, 12 are oriented transversely to the direction of displacement and have stop surfaces 15 acting in the direction of displacement.
  • the first latching part 11 is designed as a latching comb 32, in particular with a number of recesses corresponding to at least the number of intermediate positions.
  • the second locking part 12 is provided as a locking lever 30 rotatably mounted on the support arm with two locking projections 13, which are in the locking position in the illustrated embodiment.
  • a spring 17 can be seen which, supported on an abutment 18, acts on the locking lever via a leg 19 in the disengaging direction. If no pressure is exerted on the leg 19 in the unlocked position via a rod 20, the force of the spring 17 essentially acts on the locking lever 30.
  • the locking lever 30 In the unloaded seating position, the locking lever 30 remains in a toothed position, since the one in the drawing is not further seat return spring shown exerts a displacement pressure in the direction of the guide slot, through which the stop surfaces 15 of the locking lever and locking comb are pressed against one another in a friction-locked manner.
  • the spring 17 or the size of the stop surfaces 15 are dimensioned such that in this case the force necessary to overcome the static friction forces is not achieved.
  • the seat back restoring force is used in a structurally simple manner to prevent undesired rushing of the backrest in the absence of spring damping means.
  • locking comb 32 and locking lever 30 shown in FIG. 1 is not the only possible embodiment of the invention.
  • the number of adjustable locking positions as well as the displacement path can be designed differently depending on requirements.
  • a static friction connection between the contact surfaces for. B. also a latching or snagging of the contact surface by corresponding projections or bulges in the contact surfaces 15 possible.
  • an operating mechanism 21 (cf. for example Pat. DE-33 34 424 A1) is used to move the lever the rod 20 is pressed against the force of the spring 17 in the direction indicated by the arrow.
  • the rod 20 is provided with a compression spring 23 which is attached to abuts a stop collar 24 of the push rod and engages the lever 22 of the operating mechanism at the other end thereof.
  • the spring 23 is pressed by the lever 22 against the stop collar 24, so that the locking device with little seat back or seat adjustment, by slight changes in the, by the pressure thus built up on the rod 20 Seated position caused, snaps into the nearest rest area.
  • the appropriate locking position does not need to be scanned with the help of the operating mechanism.
  • the mechanism shown automatically searches for the right resting point.
  • the seat only reacts in the desired manner to the setting of the operating mechanism to the 'seat adjustment' position when the seat load leads to a sufficient reduction in the clamping tension of the latching device due to the lever relationships of the support bearing. This is particularly the case if the seat is loaded centrally and / or the backrest is leaned against. A load on the front edge of the seat alone is not sufficient. A possible impairment or risk to the seated or other people by an unwanted rushing the backrest is practically excluded.
  • FIGS. 4 and 5 also show a modified embodiment of a latching device according to the invention.
  • the displaceable guide element 10 has a plate 25 with a slot 26 oriented in the direction of displacement as the latching part 11.
  • the inner longitudinal sides of this slot 26, which run along the displacement path, are provided with teeth 27 as a locking profile.
  • the second latching part 12 located on the locking lever 30 has on its outer sides a counter-toothing 28 which matches the toothing 27, this latching part extending over some tooth regions in the direction of displacement.
  • the thickness of the plate 25 forming the first locking part 11 is a few millimeters, the depth of engagement of the second locking part 12 also corresponding approximately to this plate thickness. A very short actuation travel or working stroke is thus obtained and nevertheless a secure adhesive friction bracing, which avoids loosening of the latching device when the seat is not under load.
  • the number of interlocking teeth 27, 28 can be varied in accordance with the friction force required for this, the fineness of the teeth also playing a role. As a result, even with very fine toothing and a correspondingly fine adjustment option, e.g. B. by increasing the number of interlocking teeth, the required static friction can be achieved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Centrifugal Separators (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Materials For Medical Uses (AREA)
EP87111716A 1986-09-02 1987-08-13 Dispositif de verrouillage de sécurité Expired - Lifetime EP0262359B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111716T ATE55681T1 (de) 1986-09-02 1987-08-13 Sicherheitsverriegelung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3629882 1986-09-02
DE19863629882 DE3629882A1 (de) 1986-09-02 1986-09-02 Sicherheitsverriegelung

Publications (3)

Publication Number Publication Date
EP0262359A2 true EP0262359A2 (fr) 1988-04-06
EP0262359A3 EP0262359A3 (en) 1988-06-08
EP0262359B1 EP0262359B1 (fr) 1990-08-22

Family

ID=6308767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111716A Expired - Lifetime EP0262359B1 (fr) 1986-09-02 1987-08-13 Dispositif de verrouillage de sécurité

Country Status (4)

Country Link
US (1) US4943115A (fr)
EP (1) EP0262359B1 (fr)
AT (1) ATE55681T1 (fr)
DE (2) DE3629882A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960586A3 (fr) * 1998-05-27 2001-03-28 Röder, Peter Chaise, notamment chaise de bureau

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800751A1 (de) * 1987-01-19 1988-08-04 Okamura Corp Sessel
DE3724605C2 (de) * 1987-07-24 1994-02-03 Inaba Seisakusho Ltd Sitzmöbel
US5018787A (en) * 1990-06-20 1991-05-28 Shepherd Products U.S. Inc. Chair seat tilt control
DE9112861U1 (de) * 1991-10-16 1992-01-02 SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg Vorrichtung zur Gewichtseinstellung für die Einstellung von Sitzflächen und Rückenlehnen bei Stühlen, insbesondere Bürodrehstühlen
US5222781A (en) * 1992-01-13 1993-06-29 Mele Peter C Automatically adjustable bicycle seat apparatus
CA2319884C (fr) * 1992-06-15 2001-12-04 Herman Miller, Inc. Colonne a support pneumatique pour une chaise
DE4312113C1 (de) * 1993-04-14 1994-10-27 Mauser Waldeck Ag Sitzmöbel
US5417474A (en) * 1993-09-23 1995-05-23 Westinghouse Electric Corporation Tilt control mechanism for chairs
US5464274A (en) * 1994-01-13 1995-11-07 Westinghouse Electric Corporation Chair seat tilt adjustment and locking mechanism
DE9410941U1 (de) * 1994-07-08 1994-09-01 Völkle, Rolf, 72290 Loßburg Sitzmöbel mit neigungsverstellbarer Sitzfläche und Rückenlehne
IT1268765B1 (it) * 1994-07-20 1997-03-06 Cofemo Spa Dispositivo di bloccaggio dell'oscillazione dello schienale in poltrone con sedile e schienale ad inclinazione variabile
DE19502649A1 (de) * 1995-01-28 1996-08-01 Stoll Kg Christof Arretiermechanik für die neigbare Lehne eines Stuhles
US5765914A (en) * 1995-06-07 1998-06-16 Herman Miller, Inc. Chair with a tilt control mechanism
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.
US6250715B1 (en) 1998-01-21 2001-06-26 Herman Miller, Inc. Chair
IT1306231B1 (it) * 1998-04-27 2001-06-04 Donati Spa Supporto per sedia oscillante o sincronizzata
US6161897A (en) * 1999-06-03 2000-12-19 Hon Technology Inc. Chair construction
US6598936B1 (en) 2001-04-11 2003-07-29 Michael N. Klein Multi-task mid-pivot chair control mechanism
US6585320B2 (en) * 2001-06-15 2003-07-01 Virco Mgmt. Corporation Tilt control mechanism for a tilt back chair
EP1855567B1 (fr) * 2005-03-01 2015-09-23 Haworth, Inc. Mecanisme de controle d'inclinaison d'un fauteuil
CN102151027B (zh) 2007-01-29 2016-03-16 赫尔曼米勒有限公司 座位结构及其使用方法
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
DE102019113585A1 (de) * 2019-05-21 2020-11-26 Bock 1 Gmbh & Co. Kg Verriegelungseinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363935A (en) * 1941-02-03 1944-11-28 Automatic Products Co Chair
DE3303265A1 (de) * 1983-02-01 1984-08-02 Röder GmbH Sitzmöbelwerke, 6000 Frankfurt Stuhl, insbesondere buerostuhl
CH659179A5 (en) * 1983-05-06 1987-01-15 Provenda Marketing Ag Working chair, especially an office chair

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430604A (en) * 1944-02-16 1947-11-11 John M Dorton Reclining spring supported back rest
CH562590A5 (fr) * 1973-07-04 1975-06-13 Stoll Kg Christof
DE3334424A1 (de) * 1983-09-23 1985-04-11 Girsberger AG, Bützberg Bedienungsmechanismus fuer sitzmoebel
IT8324068V0 (it) * 1983-12-30 1983-12-30 Tecno Mobili E Forniture Per A Poltrona per ufficio con altezza ed oscillazione elastica regolabile.
JPS60117742U (ja) * 1984-01-18 1985-08-09 株式会社岡村製作所 椅子のリクライニング装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363935A (en) * 1941-02-03 1944-11-28 Automatic Products Co Chair
DE3303265A1 (de) * 1983-02-01 1984-08-02 Röder GmbH Sitzmöbelwerke, 6000 Frankfurt Stuhl, insbesondere buerostuhl
CH659179A5 (en) * 1983-05-06 1987-01-15 Provenda Marketing Ag Working chair, especially an office chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960586A3 (fr) * 1998-05-27 2001-03-28 Röder, Peter Chaise, notamment chaise de bureau

Also Published As

Publication number Publication date
EP0262359B1 (fr) 1990-08-22
DE3629882A1 (de) 1988-03-10
DE3629882C2 (fr) 1990-11-29
EP0262359A3 (en) 1988-06-08
ATE55681T1 (de) 1990-09-15
US4943115A (en) 1990-07-24
DE3764439D1 (de) 1990-09-27

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