EP1989961A1 - Synchronisation mechanism for office chairs - Google Patents
Synchronisation mechanism for office chairs Download PDFInfo
- Publication number
- EP1989961A1 EP1989961A1 EP08007665A EP08007665A EP1989961A1 EP 1989961 A1 EP1989961 A1 EP 1989961A1 EP 08007665 A EP08007665 A EP 08007665A EP 08007665 A EP08007665 A EP 08007665A EP 1989961 A1 EP1989961 A1 EP 1989961A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- seat
- coupling element
- synchronous mechanism
- lever
- 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
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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
-
- 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
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
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- 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
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
Definitions
- the invention relates to a synchronous mechanism for office chairs with the features specified in the preamble of claim 1, as is known from a variety of documents, such as DE 103 57 165 A1 or DE 36 35 044 A1 in its basic structure is known.
- synchronous mechanism assemblies are understood in the seat base of an office chair, which provide for a coupled, a certain relative movement of the seat and backrest with each other bringing kinematics.
- a base support is placed on a chair column, to which on the one hand a pivotable about a transverse axis, hingedly connected to the base support seat support and on the other hand also pivotable about a transverse axis, hingedly connected to the base support backrest support are mounted.
- On the seat support of the usually provided with a padded seat seat of the office chair is mounted.
- the backrest support which extends in a conventional manner from the actual synchronizing mechanism to the rear, carries on an upwardly extending arm, the backrest of the office chair.
- Seat support and backrest support are coupled so articulated that a pivoting movement of the backrest to the rear - as can be caused for example by leaning of the chair user to the backrest - induces a lowering movement of the rear edge of the seat down.
- This correlated seat-back movement provides a significant comfort advantage and is desirable for orthopedic reasons.
- a fundamental issue with synchronous mechanisms is their spring action against the pivoting backwards.
- a variety of spring designs is known from the prior art.
- the construction according to DE 10 25 994 A1 provided spring assembly is based on two torsion springs, which are housed in the base support.
- the one leg of the spring is housed in an adjustment in the base support, whereas the second leg projects upwards in the direction of seat support, which is supported via a corresponding abutment on this leg and thus acted against its rearward pivoting direction.
- the invention is based on the object to provide a synchronous mechanism for office chairs with an improved adjustment, due to which the adjustment of the counter-spring force can be done with high ease of use, especially low effort and travel.
- a coupling element arranged between the seat support and the support lever is provided for transmitting the pivoting movement of the seat support to the support lever.
- the distance of the coupling element to the axes of rotation of seat support and support lever is now adjustable so that at a given pivot angle of the seat support results in a distance-dependent pivot angle of the support lever.
- the compression of the compression spring is dependent on the distance of the coupling element to the axes of rotation of seat support and support lever.
- the displaceable coupling element thus adds to a certain extent a displaceable transmission gear between seat support and compression spring, which is independent of the reaction force of the compression spring adjustable.
- the adjusting mechanism does not have to work against the spring force, as is the case, for example, with a counterforce adjustment by a change in the bias of the spring.
- the synchronous mechanism 1 as a supporting element on a base support 2, which in the region of its rear end with a cone seat 3 (see Fig. 6 ) is provided for attaching the synchronizing mechanism 1 to the upper end of a chair column 4 indicated by dashed lines.
- Further basic components of the synchronizing mechanism 1 are the backrest support 5 and the seat support 6.
- the backrest support 5 is mounted in front of the cone receptacle 3 approximately centrally in the base support 2 so as to be pivotable on the base support 2 via a transverse axis 7. He has two rearwardly extending side struts 8, 9, which include between them a receiving plate 10 for mounting the backrest, not shown.
- the base support 2 extends from the cone seat 3 in an arc forward above (see Fig. 2 and 3 ), where formed in its front end portion of the substantially inverted, in plan view approximately rectangular pan seat support 6 with its front end portion via a hinge 11 (see Fig. 6 ) is attached.
- the seat support 6 In its rear end region of the seat support 6 is also coupled to the backrest support 5 articulated.
- the backrest support 5 In its rear end region of the seat support 6 is also coupled to the backrest support 5 articulated.
- the backrest support 5 In its rear end region of the seat support 6 upwardly projecting bearing cheeks 12, 13 are formed, the outwardly projecting axle stub 14, 15 carry.
- the backrest support 5 engages in corresponding receptacles in the seat support 6 and thus forms the in Fig. 4 and 5 indicated, transverse pivot axis 16 between the backrest 5 and seat support. 6
- Fig. 2 shows the synchronous mechanism 1 in its normal position in which the seat support and thus the seat cushion unit (not shown) substantially horizontal and the backrest support 5 are arranged so that the backrest, also not shown, attached to the backrest support 2 is substantially upright.
- the backrest support 5 is moved backwards downwards (in the clockwise direction according to FIG Fig. 2 and 3 ) is pivoted about the transverse axis 7.
- the seat support 6 is pivoted in the pivoting direction S about the hinge 11 down.
- the three components base support 2, backrest support 5 and seat support 6 then take the in Fig. 3 shown position with reclined seat cushion unit and swung backwards backrest a.
- the synchronous mechanism 1 is subjected to a force by means of a designated as a whole by 17 spring arrangement against the synchronizing adjustment movement explained above.
- the heart of this spring arrangement 17 is a central in the base support 2 in the vertical direction, open-wound helical compression spring 18, which is supported with its lower end to an abutment 19 in the base support 2 in front of the cone seat 3. With its upper end, the compression spring 18 is supported on the top wall 21 of the seat support 6 via a support lever 20 which will be explained in more detail below.
- the seat support 6 pivots downward, whereby the helical compression spring 18 is compressed and generates a corresponding counterforce against the synchronizing movement.
- each of a coupling element 24 supporting the adjusting slide 23 of the adjustment are mounted on a designated as a whole with 30 rack drive in the seat longitudinal direction L adjustable.
- the downwardly facing edge of the lock slider 23 on a rack 31 which meshes with small diameter gears 32 in each case.
- the latter are rotatably mounted on the axis 29, on the same centric a larger diameter gear 33 rotatably seated.
- the latter is driven by a driven gear 34 on a transversely extending, arranged in the base support 2 adjusting shaft 35, at the free end of a hand wheel 36 for manual actuation of the adjustment assembly 22 is seated.
- the support cheeks 27 are provided on their coupling element 24 facing upper side with a low-friction coating 37, for example made of PTFE, so that the trained in cross-section as a spherically shaped head coupling element 24 can slide particularly smoothly along the support cheeks 27.
- a low-friction coating 37 for example made of PTFE
- the lock slider 23 it is further provided that in the in Fig. 7 . 9 and 13 illustrated starting position of the clearance gap 38 between the top of the support cheeks 27 including covering 37 to the bottom 39 of the top wall 21 of the seat support 6 is slightly larger than the vertical extent d of the designed as a crowned coupling element 24.
- the support lever 20 beats with the top of its support plate 25th on the underside 39 of the top wall 21 of the seat support 6, as shown in black contour in Fig. 13 becomes clear.
- the counter-spring force F of the helical compression spring 18 is removed on the seat support 6 and the coupling element 24 can under play in this basic position according to the Fig. 7 . 9 and 13 unaffected by the spring force in the seat longitudinal direction L can be adjusted.
- This is done by turning accomplished on the hand wheel 36.
- the rotational movement is transmitted via the adjusting shaft 35, the driven gear 34, the central gear 33 and the two smaller gears 32 on the two adjusting slide 23 of the adjustment 22, so that the coupling elements 24 of the lock slider 23 between the in Fig. 7 and 9 shown extreme positions with maximum or minimum distance A S , A A of the axes of rotation (hinge 11 and axis 29 of seat support 6 and support lever 20) is displaceable.
- Fig. 7 illustrated basic position of the synchronous mechanism 1, in which the coupling elements 24 are arranged on the adjusting slides 23 of the adjustment assembly 22 with a maximum distance a S , A A from the axes of rotation 11, 29 from the seat support 6 and support lever 20.
- the synchronous mechanism 1 is activated by pivoting the backrest, the seat support 6 is pivoted about the axis of rotation (hinge 11). Due to the different axis of rotation of the support lever 20, the pivotal movement of the seat support 6 is transmitted via the coupling elements 24 on the support lever 20.
- S S of the seat support 6 results in a maximum pivot angle S A ( Fig.
- the adjusting arrangement 22 is actuated by means of the hand wheel 36 and the coupling elements 24 are moved from the in Fig. 7 shown starting position in the in Fig. 9 shown end position (distances a S 'and a A ' in Fig. 11 ).
- the support lever 20 is more deflected due to the closer to its axis of rotation towards the coupling elements 24, as in Fig. 11 indicated by dashed lines.
- the helical compression spring 18 is compressed at a constant swivel angle S S of the seat support 6 and the counter generated by it in the synchronous mechanism 1 -Feather force larger.
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)
Abstract
Description
Die Erfindung betrifft eine Synchronmechanik für Bürostühle mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen, wie sie aus einer Vielzahl von Druckschriften, beispielsweise der
Unter der Bezeichnung "Synchronmechanik" werden Baugruppen im Sitzunterbau eines Bürostuhles verstanden, die für eine miteinander gekoppelte, eine bestimmte Relativbewegung von Sitz- und Rückenlehne zueinander mit sich bringende Kinematik sorgen. Dazu ist auf einer Stuhlsäule ein Basisträger platziert, an dem zum einen ein um eine Querachse schwenkbarer, gelenkig mit dem Basisträger verbundener Sitzträger und zum anderen ein ebenfalls um eine Querachse schwenkbarer, gelenkig mit dem Basisträger verbundener Rückenlehnenträger gelagert sind. Auf dem Sitzträger ist der in aller Regel mit einer gepolsterten Sitzfläche versehene Sitz des Bürostuhls montiert. Der Rückenlehnenträger, der sich gängiger Weise von der eigentlichen Synchronmechanik nach hinten erstreckt, trägt an einem nach oben verlaufenden Ausleger die Rückenlehne des Bürostuhles.The term "synchronous mechanism" assemblies are understood in the seat base of an office chair, which provide for a coupled, a certain relative movement of the seat and backrest with each other bringing kinematics. For this purpose, a base support is placed on a chair column, to which on the one hand a pivotable about a transverse axis, hingedly connected to the base support seat support and on the other hand also pivotable about a transverse axis, hingedly connected to the base support backrest support are mounted. On the seat support of the usually provided with a padded seat seat of the office chair is mounted. The backrest support, which extends in a conventional manner from the actual synchronizing mechanism to the rear, carries on an upwardly extending arm, the backrest of the office chair.
Sitzträger und Rückenlehnenträger sind derart gelenkig gekoppelt, dass eine Schwenkbewegung der Rückenlehne nach hinten - wie sie beispielsweise durch ein Anlehnen des Stuhlbenutzers an die Rückenlehne hervorgerufen werden kann - eine Absenkbewegung der Hinterkante des Sitzes nach unten induziert. Diese korrelierte Sitz-Rückenlehnen-Bewegung bringt einen erheblichen Komfortvorteil mit sich und ist aus orthopädischen Gründen erwünscht.Seat support and backrest support are coupled so articulated that a pivoting movement of the backrest to the rear - as can be caused for example by leaning of the chair user to the backrest - induces a lowering movement of the rear edge of the seat down. This correlated seat-back movement provides a significant comfort advantage and is desirable for orthopedic reasons.
Ein grundsätzlicher Sachverhalt bei Synchronmechaniken liegt in ihrer Federbeaufschlagung gegen die Verschwenkung nach hinten. Hierzu ist aus dem Stand der Technik eine Vielzahl von Federkonstruktionen bekannt. Die bei der Konstruktion gemäß
Bei dieser Verstellanordnung wird der sich darin abstützende Schenkel der Schenkelfeder zur Änderung deren Vorspannung in seiner Position verstellt, wobei direkt gegen die Kraft der Schenkelfeder gearbeitet werden muss. Dies bedingt einen relativ hohen Kraftaufwand bei der Verstellung.In this adjustment arrangement, the legs of the leg spring which are supported therein are adjusted in their position to change their pretension, wherein it is necessary to work directly against the force of the leg spring. This requires a relatively high force during adjustment.
Bei der Synchronmechanik gemäß
Auch bei dieser Verstelleinrichtung für die Federvorspannung wird gegen die Kraft der Feder gearbeitet, sodass entweder hohe Betätigungskräfte herrschen oder eine solche Getriebeübersetzung innerhalb des Betätigungsmechanismus vorgesehen werden, dass für die Verstellung über einen bestimmten Bereich eine hohe Anzahl von Umdrehungen der Betätigungswelle notwendig sind. Beides bringt Einbußen beim Bedienungskomfort der Federkraft-Verstellung mit sich.Also in this adjustment for the spring preload is worked against the force of the spring, so either high actuation forces prevail or such a gear ratio are provided within the actuating mechanism that a large number of revolutions of the actuating shaft are necessary for the adjustment over a certain range. Both bring with it losses in the ease of use of the spring force adjustment with it.
Bei der
Der Erfindung liegt nun die Aufgabe zugrunde, eine Synchronmechanik für Bürostühle mit einer verbesserten Verstellanordnung anzugeben, aufgrund derer die Verstellung der Gegen-Federkraft mit hohem Bedienungskomfort, insbesondere geringem Kraftaufwand und Stellweg erfolgen kann.The invention is based on the object to provide a synchronous mechanism for office chairs with an improved adjustment, due to which the adjustment of the counter-spring force can be done with high ease of use, especially low effort and travel.
Diese Aufgabe wird durch die im Kennzeichnungsteil des Anspruches 1 angegebenen Merkmale gelöst. Demnach ist als Verstellanordnung für die Gegen-Federkraft der Druckfeder ist ein zwischen Sitzträger und Abstützhebel angeordnetes Koppelelement zur Übertragung der Schwenkbewegung des Sitzträgers auf den Abstützhebel vorgesehen. Der Abstand des Koppelelements zu den Drehachsen von Sitzträger und Abstützhebel ist nun derart verstellbar, dass sich bei gegebenem Schwenkwinkel des Sitzträgers ein abstandsabhängiger Schwenkwinkel des Abstützhebels ergibt. Damit wird auch das Kompressionsmaß der Druckfeder abhängig vom Abstand des Koppelelements zu den Drehachsen von Sitzträger und Abstützhebel.This object is achieved by the features stated in the characterizing part of claim 1. Accordingly, as an adjusting arrangement for the counter-spring force of the compression spring, a coupling element arranged between the seat support and the support lever is provided for transmitting the pivoting movement of the seat support to the support lever. The distance of the coupling element to the axes of rotation of seat support and support lever is now adjustable so that at a given pivot angle of the seat support results in a distance-dependent pivot angle of the support lever. Thus, the compression of the compression spring is dependent on the distance of the coupling element to the axes of rotation of seat support and support lever.
Das verschiebbare Koppelelement fügt also gewissermaßen ein verschiebbares Übersetzungsgetriebe zwischen Sitzträger und Druckfeder ein, das unabhängig von der Gegenkraft der Druckfeder verstellbar ist. Insbesondere muss der Verstellmechanismus nicht gegen die Federkraft arbeiten, wie dies beispielsweise bei einer Gegenkraft-Einstellung durch eine Änderung der Vorspannung der Feder der Fall ist.The displaceable coupling element thus adds to a certain extent a displaceable transmission gear between seat support and compression spring, which is independent of the reaction force of the compression spring adjustable. In particular, the adjusting mechanism does not have to work against the spring force, as is the case, for example, with a counterforce adjustment by a change in the bias of the spring.
Bevorzugte Weiterbildungen des Erfindungsgegenstandes sind in den abhängigen Ansprüchen angegeben, deren Merkmale, Einzelheiten und Vorteile der nachfolgenden Beschreibung eines Ausführungsbeispiels anhand der beigefügten Zeichnungen entnehmbar sind. Es zeigen:
- Fig. 1
- eine perspektivische Ansicht einer Synchronmechanik schräg von hinten,
- Fig. 2 und 3
- Seitenansichten der Synchronmechanik in der horizontalen Grund- und nach hinten abgesenkten Auslenkstellung,
- Fig. 4 und 5
- perspektivische Ansichten der Synchronmechanik von schräg vorne und hinten bei abgenommenem Sitzträger,
- Fig. 6
- einen Vertikalschnitt der Synchronmechanik in der Längsmittelebene,
- Fig. 7 bis 10
- Vertikalschnitte entlang der Schnittlinie W-W gemäß
Fig. 12 in Grund- und abgesenkter Stellung der Synchronmechanik mit unterschiedlich eingestellter Gegen-Federkraft, - Fig. 11
- ein höchst schematisches Schaubild zur Erläuterung der Funktionsweise der Gegenkraft-Verstellung,
- Fig. 12
- einen vertikalen Querschnitt der Synchronmechanik entlang der Schnittlinie A-A nach
Fig. 6 , und - Fig. 13
- einen in Längsrichtung versetzten Vertikalschnitt der Synchronmechanik entlang der Schnittlinie C-C gemäß
Fig. 12 .
- Fig. 1
- a perspective view of a synchronous mechanism obliquely from behind,
- FIGS. 2 and 3
- Side views of the synchronizing mechanism in the horizontal base and to the rear lowered deflection position,
- 4 and 5
- perspective views of the synchronous mechanism obliquely from the front and rear with the seat support removed,
- Fig. 6
- a vertical section of the synchronous mechanism in the longitudinal center plane,
- Fig. 7 to 10
- Vertical sections along the section line WW according to
Fig. 12 in the basic and lowered position of the synchronizing mechanism with differently adjusted counter-spring force, - Fig. 11
- a highly schematic diagram for explaining the operation of the counterforce adjustment,
- Fig. 12
- a vertical cross-section of the synchronous mechanism along the section line AA after
Fig. 6 , and - Fig. 13
- a longitudinally offset vertical section of the synchronous mechanism along the section line CC according to
Fig. 12 ,
Wie aus den
Der Basisträger 2 erstreckt sich von der Konusaufnahme 3 aus in einem Bogen nach vorne oben (siehe
In seinem rückwärtigen Endbereich ist der Sitzträger 6 mit dem Rückenlehnenträger 5 ebenfalls gelenkig gekoppelt. Dazu sind im Bereich der Seitenstreben 8, 9 des Rückenlehnenträgers 5 nach oben abstehende Lagerwangen 12, 13 angeformt, die nach außen abstehende Achsstummel 14, 15 tragen. Damit greift der Rückenlehnenträger 5 in entsprechende Aufnahmen im Sitzträger 6 ein und bildet somit die in
Aufgrund der gelenkigen Verbindung zwischen Basisträger 2, Sitzträger 6 und Rückenlehnenträger 5 kann eine typische Verstellbewegung der Synchronmechanik 1 erzielt werden, wie es sich aus einem Vergleich der
Lehnt sich der Stuhlbenutzer gegen diese Rückenlehne an, so wird der Rückenlehnenträger 5 nach hinten unten (im Uhrzeigersinn gemäß
Die Synchronmechanik 1 ist mit Hilfe einer als Ganzes mit 17 bezeichneten Federanordnung entgegen der oben erläuterten Synchronverstellbewegung kraftbeaufschlagt. Herzstück dieser Federanordnung 17 ist eine zentral im Basisträger 2 in vertikaler Richtung angeordnete, offen gewickelte Schraubendruckfeder 18, die sich mit ihrem unteren Ende an einem Gegenlager 19 im Basisträger 2 vor der Konusaufnahme 3 abstützt. Mit ihrem oberen Ende stützt sich die Druckfeder 18 über einen noch näher zu erläuternden Abstützhebel 20 an der Deckwand 21 des Sitzträgers 6 ab. Bei der oben erwähnten Verschwenkung der Synchronmechanik 1 in Schwenkrichtung S schwenkt der Sitzträger 6 nach unten, wodurch die Schraubendruckfeder 18 komprimiert wird und eine entsprechende Gegenkraft gegen die Synchronverstellbewegung erzeugt.The synchronous mechanism 1 is subjected to a force by means of a designated as a whole by 17 spring arrangement against the synchronizing adjustment movement explained above. The heart of this
Zur Einstellung dieser Gegenkraft ist eine als Ganzes mit 22 bezeichnete Verstellanordnung vorgesehen, deren Herzstücke die beiden Stellschieber 23 mit den daran angeformten Koppelelementen 24 sind. Diese Verstellanordnung 22 wird im Folgenden noch ausführlich erörtert.To adjust this reaction force is designated as a whole with 22 adjustment arrangement, the heart of which are the two adjusting
Wie aus den
Wie ferner aus den
Wie insbesondere aus
Die in
Ausgegangen wird von der in
Zur Erhöhung der Gegenkraft F wird mit Hilfe des Handrades 36 die Verstellanordnung 22 betätigt und die Koppelelemente 24 werden von der in
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007021782A DE102007021782B3 (en) | 2007-05-07 | 2007-05-07 | Synchronous mechanism for office chairs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1989961A1 true EP1989961A1 (en) | 2008-11-12 |
EP1989961B1 EP1989961B1 (en) | 2012-08-22 |
Family
ID=39688504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08007665A Not-in-force EP1989961B1 (en) | 2007-05-07 | 2008-04-19 | Synchronisation mechanism for office chairs |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1989961B1 (en) |
DE (1) | DE102007021782B3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009010234A1 (en) | 2009-02-24 | 2010-09-02 | Klöber GmbH | Synchronization mechanism for office chair, has spring lever with rotation point that is arranged in lower region of plate, where front pivotable part of spring lever is directly pressed on pressure spring |
US8857909B2 (en) | 2011-08-04 | 2014-10-14 | Bock 1 Gmbh & Co. Kg | Chair with a rocking mechanism |
EP3741256A1 (en) * | 2019-05-21 | 2020-11-25 | BOCK 1 GmbH & Co. KG | Synchronisation mechanism |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009016968B4 (en) | 2009-04-14 | 2012-01-26 | Votteler Designpartner Gmbh | seating |
DE102010046994B4 (en) * | 2010-09-30 | 2023-01-12 | Bock 1 Gmbh & Co. Kg | synchronous mechanism |
ES2800425T3 (en) | 2018-04-17 | 2020-12-30 | L&P Property Man Co | Tilt mechanism of a chair and chair |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3635044A1 (en) | 1986-10-15 | 1988-04-28 | Rolf Voelkle | ARMCHAIR |
DE19509216A1 (en) * | 1994-03-17 | 1995-10-12 | Froescher Gmbh & Co Kg | Chair or seat device |
DE10125994A1 (en) | 2001-05-18 | 2002-11-21 | Bock 1 Gmbh & Co | Synchronous mechanism for a correlated movement of the seat backrest of an office chair |
US6572191B2 (en) * | 2000-07-08 | 2003-06-03 | Dauphin Entwicklungs- U. Beteiligungs-Gmbh | Chair, in particular office chair, having a synchronous mechanism |
EP1454567A1 (en) * | 2003-03-04 | 2004-09-08 | Pro-Cord Spa | A chair with oscillating seat |
DE10357165A1 (en) | 2003-12-06 | 2005-06-30 | Bock-1 Gmbh & Co. | Synchronous mechanism for office chairs |
-
2007
- 2007-05-07 DE DE102007021782A patent/DE102007021782B3/en not_active Expired - Fee Related
-
2008
- 2008-04-19 EP EP08007665A patent/EP1989961B1/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3635044A1 (en) | 1986-10-15 | 1988-04-28 | Rolf Voelkle | ARMCHAIR |
DE19509216A1 (en) * | 1994-03-17 | 1995-10-12 | Froescher Gmbh & Co Kg | Chair or seat device |
US6572191B2 (en) * | 2000-07-08 | 2003-06-03 | Dauphin Entwicklungs- U. Beteiligungs-Gmbh | Chair, in particular office chair, having a synchronous mechanism |
DE10125994A1 (en) | 2001-05-18 | 2002-11-21 | Bock 1 Gmbh & Co | Synchronous mechanism for a correlated movement of the seat backrest of an office chair |
EP1454567A1 (en) * | 2003-03-04 | 2004-09-08 | Pro-Cord Spa | A chair with oscillating seat |
DE10357165A1 (en) | 2003-12-06 | 2005-06-30 | Bock-1 Gmbh & Co. | Synchronous mechanism for office chairs |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009010234A1 (en) | 2009-02-24 | 2010-09-02 | Klöber GmbH | Synchronization mechanism for office chair, has spring lever with rotation point that is arranged in lower region of plate, where front pivotable part of spring lever is directly pressed on pressure spring |
US8857909B2 (en) | 2011-08-04 | 2014-10-14 | Bock 1 Gmbh & Co. Kg | Chair with a rocking mechanism |
EP3741256A1 (en) * | 2019-05-21 | 2020-11-25 | BOCK 1 GmbH & Co. KG | Synchronisation mechanism |
Also Published As
Publication number | Publication date |
---|---|
DE102007021782B3 (en) | 2008-09-18 |
EP1989961B1 (en) | 2012-08-22 |
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