EP0995371B1 - Bürostuhl mit einer Sitzneigungsverstellung - Google Patents
Bürostuhl mit einer Sitzneigungsverstellung Download PDFInfo
- Publication number
- EP0995371B1 EP0995371B1 EP99120668A EP99120668A EP0995371B1 EP 0995371 B1 EP0995371 B1 EP 0995371B1 EP 99120668 A EP99120668 A EP 99120668A EP 99120668 A EP99120668 A EP 99120668A EP 0995371 B1 EP0995371 B1 EP 0995371B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotary shaft
- adjustment
- rotation
- functional part
- angle
- 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
Links
Images
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
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
-
- 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
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
- A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
Definitions
- the invention relates to an office chair a seat support that is one horizontal and transverse axis in a support frame with adjustable inclination is, the tilt adjustment by means of an eccentric rotary shaft, those with at least one concentric Shaft part in a pivot bearing of the support frame is stored and the at least an eccentric shaft part (eccentric) has that in an eccentric bearing Seat carrier runs such that a Angle adjustment made by the seat user the inclination of the rotary shaft Seat support relative to the support frame changed.
- Eccentric adjustments are certain Limits self-locking, i.e. they change their angle of rotation position set by the seat user Not. However, that applies then no longer when the eccentrics that in an eccentric bearing of the seat support are positioned with a excessive body weight of the seat user or with a too strong dynamic Behavior of the seat user is burdened that are e.g. in tremors the eccentric bearing affects. Then can it leads to unwanted adjustments of the Seat inclination come.
- the object of the invention is an office chair of the aforementioned type with a Tilt adjustment of the seat so to improve that unwanted pretense not the seat inclination may occur.
- the eccentric rotary shaft one Has handling part that is relative to Functional part of the rotary shaft is rotatable, and that between the functional part of the Rotary shaft and the support frame a disengageable There is locking intervention when not disengaged, the angle of rotation adjustment of the functional part of the Blocked rotation shaft, being a first Angle of rotation range of the seat user on Handling part of the rotary shaft executed Angle of rotation adjustment by means of a conversion gear in a disengagement movement of the blocking intervention is implemented and a subsequent second angle range that of the seat user on the handling part the rotary shaft adjustment via a driver stop between the handling part and the Functional part of the rotary shaft an analog Rotation angle adjustment of the functional part the rotating shaft.
- Office chair initially has the Advantage that its ease of use when adjusting the seat inclination preserved.
- the seat user operates only one rotary shaft as before and thereby adjusts the seat inclination in the way you want.
- defined transition between a first and second rotation angle range the rotating shaft remains in the seat user Normally undetected and unnoticed, there the successive rotation angle ranges the rotary shaft only internal Functional processes concern.
- a particularly useful construction the locking intervention exists according to claim 2 in that this is in the form of a Functional part of the rotating shaft Helical gear teeth formed is that in the non-disengaged state with one fixed to the supporting frame Spur gear toothing is engaged, whereby on the functional part of the rotary shaft sitting spur gear teeth by a axial displacement movement on the rotary shaft can be disengaged against the pressure of a locking spring is.
- Such a lockout between the functional part of the rotary shaft and the support frame is easy and inexpensive to manufacture.
- bevels can be turned in both directions the rotary shaft is the same be so that the seat user the rotating shaft optionally in one or the other direction of rotation can and always rotate desired target of an inclination adjustment reached the seat.
- Support frame 4 of an office chair is a Die-cast molding in which the seat support 5 (consisting of the two lateral Mounting rails 6 and the crosshead 7) inclination adjustable.
- the seat support 5 (consisting of the two lateral Mounting rails 6 and the crosshead 7) inclination adjustable.
- this purpose in the middle of the seat support a transverse axis 8 is provided, the End pieces are held in the support frame and on which the seat support is facing forward or tilted backwards can.
- the desired inclination of the seat support 5 is by means of the manual to be operated eccentric rotary shaft 9 set.
- This consists in detail of the Handling part 10, in the illustration 1 approximately in the outer wall of the Support frame 4 ends. That follows then the functional part 11 of the rotary shaft on the inside of the support frame 4 located.
- In the illustrated embodiment has the functional part of Rotary shaft on both sides in Area of the mounting rails 6 of the seat support one concentric each Shaft part as a pivot bearing and one each eccentric shaft part as eccentric.
- Fig. 2 shows that in Fig. 1 on the right Side existing pivot bearing and the one there existing eccentric more precisely.
- the pivot bearing from which the top cover to Cut away for better visibility is, is due to its two outside Bearing walls 12 shown. These are stationary molded in the support frame 4.
- this pivot bearing is concentric executed shaft part 13. This closes the eccentric shaft part 14 at the one in an eccentric bearing (not shown) that in the seat support 5 is present, running and its Eccentric stroke the inclination adjustment of the Seat support around its transverse axis (Tilt axis 8) controls.
- a helical compression spring (Locking spring 15) arranged one axial displacement bushing 16 with the Spur gear teeth 17 permanently in In the direction of the spur gear teeth 18, which is fixed in position on the support frame 4 is. If the handling part 10 of the rotary shaft not activated, then there are Helical gear teeth 17 and 18 in mutual Engaging and blocking any unwanted Rotation angle adjustment of the functional part 11 of the rotary shaft 9.
- the handling part 10 At the end of the first rotation angle range the handling part 10 reaches the Driver stop 21 (see Fig. 3) so that in the second rotation angle range every further one Rotation angle adjustment of the handling part 10 an analog rotation angle adjustment of the Functional part 11 of the rotary shaft.
- the seat user then adjusts the eccentric stroke for the desired inclination adjustment the seat.
- the seat user ends the rotation angle adjustment of the handling part 10 of the Rotary shaft, then the locking spring 15 for immediate and effective blocking of the functional part of the rotary shaft against any undesired further rotation angle adjustment.
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)
Description
- Fig. 1
- in perspektivischer Darstellung den Tragrahmen eines Bürostuhls mit eingebauter Sitzflächenneigungsverstellung,
- Fig. 2
- die Drehwelle der Sitzflächenneigungsverstellung im nichtbetätigten Zustand,
- Fig. 3
- die Drehwelle der Sitzflächenneigungsverstellung im betätigten Zustand.
Claims (4)
- Bürostuhlmit einem Sitzflächenträger, der um eine horizontal und quer verlaufende Achse in einem Tragrahmen (4) neigungsverstellbar gelagert ist,wobei die Neigungsverstellung mittels
einer Exzenter-Drehwelle erfolgt, die mit mindestens einem konzentrischen Wellenteil (13) in einem Drehlager des Tragrahmens gelagert ist und die mindestens einen exzentrischen Wellenteil (14) aufweist, der in
einem Exzenterlager des Sitzflächenträgers läuft derart, daß eine vom Sitzbenutzer ausgeführte Drehwinkelverstellung der Drehwelle die Neigung des Sitzflächenträgers relativ zum Tragrahmen verändert,daß die Drehwelle einen Handhabungsteil (10) aufweist, der relativ zum Funktionsteil (11) der Drehwelle rotierbar ist,daß zwischen dem Funktionsteil der Drehwelle und dem Tragrahmen (4) ein ausrückbarer Sperreingriff (17, 18) vorhanden ist, der im nicht-ausgerückten Zustand die Drehwinkelverstellung des Funktionsteils der Drehwelle blockiert,und daß ein erster Drehwinkelbereich der vom Sitzbenutzer am Handhabungsteil der Drehwelle ausgeführten Drehwinkelverstellung mittels eines Umsetzungsgetriebes (19, 20) in eine Ausrückbewegung des Sperreingriffs umgesetzt wirdund daß ein nachfolgender zweiter Drehwinkelbereich der vom Sitzbenutzer am Handhabungsteil der Drehwelle ausgeführten Drehwinkelverstellung über einen Mitnehmeranschlag (21) zwischen dem Handhabungsteil und dem Funktionsteil der Drehwelle eine analoge Drehwinkelverstellung des Funktionsteils der Drehwelle bewirkt. - Bürostuhl nach Anspruch 1,
dadurch gekennzeichnet,daß der Sperreingriff in Form einer auf dem Funktionsteil (11) der Drehwelle drehfest aufsitzenden Stirnradverzahnung (17) ausgebildet ist, die im nicht-ausgerückten Zustand mit einer am Tragrahmen (4) ortsfest befestigten Stirnradverzahnung (18) im Eingriff istund daß die auf dem Funktionsteil der Drehwelle aufsitzende Stirnradverzahnung (17) durch axiale Verschiebung auf der Drehwelle gegen den Druck einer Zuhaltefeder (15) ausrückbar ist. - Bürostuhl nach Anspruch 1,
dadurch gekennzeichnet,daß das Umsetzungsgetriebe in Form einer oder mehrerer Anlaufschrägen (19, 20) ausgebildet ist, die an den aneinanderliegenden stirnseitigen Anlageflächen des Handhabungsteils (10) und des Funktionsteils (11) der Drehwelle angeordnet sind. - Bürostuhl nach Anspruch 3,
dadurch gekennzeichnet,daß die Anlaufschrägen (19, 20) in beide Drehrichtungen der Drehwelle ausgebildet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19849522 | 1998-10-21 | ||
DE19849522A DE19849522A1 (de) | 1998-10-21 | 1998-10-21 | Bürostuhl mit einer Sitzneigungsverstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995371A1 EP0995371A1 (de) | 2000-04-26 |
EP0995371B1 true EP0995371B1 (de) | 2003-04-02 |
Family
ID=7885813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99120668A Expired - Lifetime EP0995371B1 (de) | 1998-10-21 | 1999-10-19 | Bürostuhl mit einer Sitzneigungsverstellung |
Country Status (3)
Country | Link |
---|---|
US (1) | US6283549B1 (de) |
EP (1) | EP0995371B1 (de) |
DE (2) | DE19849522A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101172001B (zh) * | 2006-10-18 | 2010-04-14 | 赛杜斯施托尔股份公司 | 具有倾斜椅座的椅子 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19922446B8 (de) * | 1999-05-07 | 2009-02-19 | Bock-1 Gmbh & Co. | Synchronmechanik für eine korrelierte Sitz-Rückenlehnen-Bewegung eines Bürostuhles |
DE10033418A1 (de) * | 2000-07-08 | 2002-01-31 | Dauphin Friedrich W Gmbh | Stuhl, insbesondere Bürostuhl |
DE10048783A1 (de) * | 2000-09-29 | 2002-05-29 | Stoll Sedus Ag | Stuhl mit neigbarem Sitz |
DE20216307U1 (de) | 2002-10-22 | 2002-12-19 | BOCK 1 GmbH & Co., 92353 Postbauer-Heng | Sitzträgervorrichtung zur Sitzneigungsverstellung eines Stuhles |
US6916067B2 (en) * | 2003-10-09 | 2005-07-12 | Jien-Feng Liu | Angle adjusting mechanism for chair |
US7445586B2 (en) * | 2005-04-15 | 2008-11-04 | John Gibson | Combination chair and leg extension apparatus for obesity prophylaxis |
ITMI20060022U1 (it) * | 2006-01-23 | 2007-07-24 | Donati Spa | Dispositivo di regolazione dell'inclinazione dello schienale o della seduta di una sedia |
ITCR20070007A1 (it) * | 2007-03-27 | 2008-09-28 | L & P Property Management Company | Meccanismo di regolazione di sedile a due posizioni di riposo |
NO327014B1 (no) * | 2007-07-10 | 2009-04-06 | Hag As | Anordning ved vippebeslag for stol |
US9988094B1 (en) | 2015-12-07 | 2018-06-05 | Apple Inc. | Internally stiffened body structure |
US10383448B1 (en) * | 2018-03-28 | 2019-08-20 | Haworth, Inc. | Forward tilt assembly for chair seat |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4077596A (en) * | 1975-06-18 | 1978-03-07 | Bliss & Laughlin Industries, Incorporated | Low silhouette chair tilting control assembly |
US4008920A (en) * | 1976-02-23 | 1977-02-22 | Uop Inc. | Seat back adjuster |
DE2902622A1 (de) * | 1979-01-24 | 1980-07-31 | Steifensand Friedrich Martin | Sitzmoebel, insbesondere buerodrehstuhl |
JPS59207112A (ja) * | 1983-05-10 | 1984-11-24 | メ−コ−工業株式会社 | 椅子 |
DE3616153C1 (de) * | 1986-05-14 | 1987-06-11 | Grammer Sitzsysteme Gmbh | Sitz,insbesondere Buerostuhl |
IT1210753B (it) * | 1987-05-20 | 1989-09-20 | Pro Cord Srl | Sopporto oscillante per sedie sedili e simili |
US4889384A (en) * | 1988-07-10 | 1989-12-26 | Leggett & Platt, Incorporated | Knee-action chair control |
IT1247369B (it) * | 1991-03-01 | 1994-12-12 | Loris Miotto | Dispositivo meccanico, particolarmente per la movimentazione ed il bloccaggio selettivo di una seduta |
US5762399A (en) * | 1996-11-13 | 1998-06-09 | Liu; Clement | Inclination positioning device for rocking type chairs |
-
1998
- 1998-10-21 DE DE19849522A patent/DE19849522A1/de not_active Withdrawn
-
1999
- 1999-10-19 EP EP99120668A patent/EP0995371B1/de not_active Expired - Lifetime
- 1999-10-19 DE DE59904823T patent/DE59904823D1/de not_active Expired - Fee Related
- 1999-10-21 US US09/422,488 patent/US6283549B1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101172001B (zh) * | 2006-10-18 | 2010-04-14 | 赛杜斯施托尔股份公司 | 具有倾斜椅座的椅子 |
Also Published As
Publication number | Publication date |
---|---|
DE19849522A1 (de) | 2000-04-27 |
EP0995371A1 (de) | 2000-04-26 |
DE59904823D1 (de) | 2003-05-08 |
US6283549B1 (en) | 2001-09-04 |
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