EP0350748A1 - Actuating device for a spring mechanism in an adjustable chair - Google Patents
Actuating device for a spring mechanism in an adjustable chair Download PDFInfo
- Publication number
- EP0350748A1 EP0350748A1 EP89112090A EP89112090A EP0350748A1 EP 0350748 A1 EP0350748 A1 EP 0350748A1 EP 89112090 A EP89112090 A EP 89112090A EP 89112090 A EP89112090 A EP 89112090A EP 0350748 A1 EP0350748 A1 EP 0350748A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- spring
- adjusting device
- actuating element
- pin
- 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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- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
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Classifications
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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
- A47C1/03255—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
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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
- A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
- A47C1/03216—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 fluid means
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/20408—Constant tension sustaining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/2042—Flexible transmitter [e.g., Bowden cable] and hand operator
- Y10T74/20426—Slidable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/2045—Flexible transmitter [e.g., Bowden cable] and sheath support, connector, or anchor
Definitions
- the invention relates to an adjustment device for an adjustable chair, the chair frame has an adjustable seat support and / or an adjustable backrest support, which two supports are supported on a base frame and together form the chair frame with the same, one with one end on the base frame and with the the other end is provided on the seat support or on the backrest support supported spring device which can be locked and unlocked by a switching device.
- Chairs whose chair frames have an adjustable seat support and / or an adjustable backrest support are known in various designs.
- the movable part of the chair frame be it the backrest support or the seat support or both, must be supported on the base frame with a spring device so that the force exerted by the chair user can be counteracted.
- This spring device is, for example, a gas spring or a coil spring.
- an actuating device is provided on the chair frame, with which the spring device and thus the chair frame are blocked can.
- the actuating device requires two different adjusting levers, a first adjusting lever, with which the locking of the spring device can be carried out, and a further adjusting lever for releasing the blocked spring device.
- This object is achieved according to the invention in that the locking and unlocking of the spring device can be adjusted with a single actuating element which can be actuated by the switching device.
- the result of this is that the switching connections which connect the actuating device to the spring device are simplified and the ease of use is increased.
- the chair frame shown in FIG. 1 has a support part 2 placed on a support column 1, which is designed as a channel-shaped hollow shell.
- the support part 2 has a web 3 with two side walls 4 - only one side wall 4 is visible in FIG. 1.
- a seat support 5 - only one seat support 5 is visible in FIG. 1 - is pivotably mounted by means of a first swivel joint 6.
- the seat supports 5 are connected on the back to a backrest support 7 by means of a second swivel joint 8.
- the second swivel joint 8 can also be designed as a torsion spring.
- the backrest support 7 is designed as a two-armed lever, of which one arm forms the only partially visible back part 9 and the other arm forms a support part 10 extending towards the knee-side end.
- a third swivel joint 11 is arranged, on each of which a link 12 is mounted, which on the one hand is rotatably supported in a fourth swivel joint 15 arranged on the side walls 4.
- a web 13 of an angle bracket 16 is also pivotably mounted, on the other web 14 of which one end of a spring device 19, for example a piston rod 18, is firmly screwed by means of a nut 20.
- a threaded bolt 23 is fastened, which on the one hand is provided with a nut 25 for fastening a second angle bracket 24 and on the other hand serves to guide a switching plunger 26.
- the spring device 19 is a gas spring
- the switching plunger 26 locks the spring device 19 in the respective position.
- the switching plunger 26 against the cylinder 22nd moved the spring device 19 is unlocked and the position of the chair frame can be changed.
- An actuating device 30 is used to actuate the switching plunger 26, the actuating element 31 of which is connected to a two-armed angle lever 34 via switching connections 32, 33.
- One arm 35 of the angle lever 34 is coupled to the switching connection 33, while the other arm 36 acts on the switching plunger 26. If, for example, the angle lever 34 is pivoted counterclockwise, the spring device 19 is unlocked, while when the angle lever 34 is pivoted back clockwise into its starting position, the spring device 19 is locked.
- FIG. 2 shows the kinematic equivalent image of the chair frame according to FIG. 1, which is composed of the support part 2, the seat support 5 and the backrest support 7.
- the reference numbers correspond to those according to FIG. 1 and are therefore not explained again.
- the angle bracket 24 is articulated on the other end of the spring device 19 with a fifth swivel joint 27 on the knee-side end of the support part 2.
- the adjusting device 30 has a switching device 40, which is composed essentially of a switching housing 41 and two switching pins 38, 39, the latter of which are displaceably guided in a bore 42 of the switching housing 41.
- axially extending webs 43 for example three webs distributed around the inner circumference are arranged as a straight guide.
- the switching pin 38, 39 have corresponding axial grooves 44, 44 '.
- the axial grooves 44 of the switching pin 38 extend over the entire length, while the axial grooves 44 'in the switching pin 39 only over part extend its length and so, see Fig. 4, form a stop at the end of the webs 43.
- the mutually facing end faces of the switching pins 38, 39 have a toothing 45, 46, which is composed of steep and flat flanks, the function of which will be explained with reference to FIG. 5.
- a driving arm 49 is arranged on the switching pin 38, in which the switching connection 32 is fastened in the form of a wire 51 of a Bowden cable.
- the wire 51 has a holding head 52 which is inserted into a groove 53 in the driving arm 49.
- the wire 51 lies in a compression spring 54 and is then guided in a support base 55 with a groove 56, on which the compression spring 54 is supported. Outside the support base 55, the wire 51 is guided in a flexible guide tube 57 which is fastened to the actuating element 31, while the wire 51 is fastened to a pivotable handle 58 of the same.
- a slot 59 is provided on the top of the switch housing 41.
- the switch housing 41 has two fastening tabs 60 with which it can be fastened to the support part 2. However, only one fastening tab 60 can also be provided.
- the other switching pin 39 is connected to the one arm 35 of the angle lever 34 by the further switching connection 33 in the form of a second Bowden cable.
- the second Bowden cable is composed of a wire 61 and a guide tube 62, the latter being supported on an end cover 64 of the switch housing 41.
- a compression spring 63 is arranged, which has one end on the guide tube 62 and the other The end is supported on the arm 35, see FIG. 4.
- the compression spring 63 exerts a clockwise force on the arm 35, as a result of which the switching plunger 26 can move into the locking position of the spring device 19.
- the switching pin 39 is moved by pulling the handle 58 on the webs 43 and then rotated so that its axial grooves 44 'are offset from the axial webs 43 of the switching housing 41, the switching pin 39 assumes the position in which the switching plunger 26 Unlocked spring device 19.
- the switching pin 39 is raised and rotated again until its axial grooves 44 align with the webs 43, whereupon when the handle 58 is released, the switching pin 39 can return to its initial position, in which the switching plunger 26 is in the locking position of the spring device can return.
- the rotation carried out by the switching pin 39 corresponds to a web pitch t.
- the rotary movement of the switching pin 39 takes place through the toothing 45, 46, as will be explained with reference to FIG. 5.
- the two switching pins 38, 39 are shown in a developed position, the axial webs 43 and the axial grooves 44, 44 'being shown.
- A corresponds to the position of the adjusting device 30 in which the spring device 19 is locked.
- the two switching pins 38, 39 lie with their axial grooves 44, 44 'in the region of the axial webs 43.
- the switching pin 38 is raised until the switching pin 39 lies above the end of the axial webs 43.
- the flat flanks 48 can shift relative to one another, since the switching pin 39 is under the action of the compression spring 63.
- the switching pin 39 thus turns to position B.
- the handle 58 is released, so that the switching pin 38 moves away from the switching pin 39, see C, which slides down with its flat flank 48 on the axial webs 43 with simultaneous rotation, see D.
- the rotatable switching pin 39 has thus completed two partial rotations.
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)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Percussion Or Vibration Massage (AREA)
- Massaging Devices (AREA)
Abstract
Description
Die Erfindung betrifft eine Verstelleinrichtung für einen verstellbaren Stuhl, dessen Stuhlgestell einen verstellbaren Sitzträger und/oder einen verstellbaren Rückenlehnenträger aufweist, welche beiden Träger an einem Fussgestell abgestützt sind und zusammen mit demselben das Stuhlgestell bilden, wobei eine mit dem einen Ende am Fussgestell und mit dem andern Ende an dem Sitzträger oder an dem Rückenlehnenträger abgestützte Federvorrichtung vorgesehen ist, welche durch eine Schalteinrichtung verriegelbar und entriegelbar ist.The invention relates to an adjustment device for an adjustable chair, the chair frame has an adjustable seat support and / or an adjustable backrest support, which two supports are supported on a base frame and together form the chair frame with the same, one with one end on the base frame and with the the other end is provided on the seat support or on the backrest support supported spring device which can be locked and unlocked by a switching device.
Stühle, deren Stuhlgestell einen verstellbaren Sitzträger und/oder einen verstellbaren Rückenlehnenträger besitzen, sind in verschiedenen Ausführungen bekannt. Der bewegliche Teil des Stuhlgestelles, sei es der Rückenlehnenträger oder der Sitzträger oder seien es beide Träger, muss hierbei mit einer Federvorrichtung an dem Fussgestell abgestützt sein, damit der vom Stuhlbenützer ausgeübten Kraft entgegengewirkt werden kann. Diese Federvorrichtung ist beispielsweise eine Gasfeder oder eine Schraubenfeder.Chairs whose chair frames have an adjustable seat support and / or an adjustable backrest support are known in various designs. The movable part of the chair frame, be it the backrest support or the seat support or both, must be supported on the base frame with a spring device so that the force exerted by the chair user can be counteracted. This spring device is, for example, a gas spring or a coil spring.
Zur Erhöhung des Sitzkomforts ist es bekannt, die Federvorrichtung in einer gewissen Lage des Stuhlgestelles zu blockieren und damit die Lage des Stuhls zu fixieren. Hierzu ist am Stuhlgestell eine Betätigungsvorrichtung vorgesehen, mit welcher die Blockierung der Federvorrichtung und damit des Stuhlgestells vorgenommen werden kann. Die Betätigungsvorrichtung benötigt hierzu zwei verschiedene Verstellhebel, einen ersten Verstellhebel, mit welchem die Blockierung der Federvorrichtung vorgenommen werden kann, und einen weiteren Verstellhebel zum Lösen der blockierten Federvorrichtung. Diese Lösung entbehrt der Einfachheit und ist für den Benützer nicht besonders bedienungsfreundlich.To increase the seating comfort, it is known to block the spring device in a certain position of the chair frame and thus to fix the position of the chair. For this purpose, an actuating device is provided on the chair frame, with which the spring device and thus the chair frame are blocked can. For this purpose, the actuating device requires two different adjusting levers, a first adjusting lever, with which the locking of the spring device can be carried out, and a further adjusting lever for releasing the blocked spring device. This solution lacks simplicity and is not particularly user-friendly for the user.
Hier setzt die Erfindung ein, der die Aufgabe zugrunde liegt, eine Verstellvorrichtung der eingangs beschriebenen Art so weiter auszugestalten, dass das Verriegeln und Entriegeln der Federvorrichtung mit einem einzigen Betätigungselement vorgenommen werden kann.This is where the invention comes in, which is based on the object of further developing an adjusting device of the type described at the outset in such a way that the locking and unlocking of the spring device can be carried out with a single actuating element.
Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die Verriegelung und Entriegelung der Federvorrichtung mit einem einzigen, die Schalteinrichtung betätigbaren Betätigungselement einstellbar ist. Dadurch wird erreicht, dass die Schaltverbindungen, welche die Betätigungseinrichtung mit der Federvorrichtung verbinden, vereinfacht werden und der Bedienungskomfort erhöht wird.This object is achieved according to the invention in that the locking and unlocking of the spring device can be adjusted with a single actuating element which can be actuated by the switching device. The result of this is that the switching connections which connect the actuating device to the spring device are simplified and the ease of use is increased.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und nachfolgend beschrieben. Es zeigen:
- Fig. 1 Einen Vertikalschnitt eines Stuhlgestells,
- Fig. 2 ein kinematisches Ersatzbild des Stuhlgestells nach Fig. 1
- Fig. 3 eine Schalteinrichtung für einen verstellbaren Stuhl, wobei die Einzelteile derselben auseinander gezogen dargestellt sind,
- Fig. 4 einen Längsschnitt des Schaltgehäuses der Schalteinrichtung nach Fig. 3 und
- Fig. 5 eine schematische Darstellung des Schaltablaufes beim Verriegeln und Entriegeln der Schalteinrichtung nach Fig. 3 und 4.
- 1 is a vertical section of a chair frame,
- FIG. 2 shows a kinematic equivalent image of the chair frame according to FIG. 1
- 3 shows a switching device for an adjustable chair, the individual parts of which are shown pulled apart,
- Fig. 4 is a longitudinal section of the switch housing of the switching device according to Fig. 3 and
- 5 shows a schematic illustration of the switching sequence when locking and unlocking the switching device according to FIGS. 3 and 4.
Das in Fig. 1 dargestellte Stuhlgestell weist einen auf einer Tragsäule 1 aufgesetzten Tragteil 2 auf, welcher als rinnenförmige Hohlschale ausgebildet ist. Der Tragteil 2 weist einen Steg 3 mit zwei Seitenwänden 4 - in Fig. 1 ist nur eine Seitenwand 4 sichtbar - auf. Am knieseitigen Ende des Tragteils 2 ist in den Seitenwänden 4 je ein Sitzträger 5 - in Fig. 1 ist nur ein Sitzträger 5 sichtbar - mittels eines ersten Drehgelenkes 6 schwenkbar gelagert. Die Sitzträger 5 sind rückenseitig mit einem Rückenlehnenträger 7 mittels eines zweiten Drehgelenkes 8 verbunden. Das zweite Drehgelenk 8 kann zudem als Torsionfeder ausgebildet sein.The chair frame shown in FIG. 1 has a
Der Rückenlehnenträger 7 ist als zweiarmiger Hebel ausgebildet, von dem der eine Arm den nur teilweise sichtbaren Rückenteil 9 und der andere Arm einen gegen das knieseitige Ende sich erstreckenden Stützteil 10 bildet. An dem freien Ende des Stützteils 10 ist ein drittes Drehgelenk 11 angeordnet, an welchem je ein Lenker 12 gelagert ist, welcher einerseits in einem an den Seitenwänden 4 angeordneten vierten Drehgelenk 15 drehbar gelagert ist. Am dritten Drehgelenk 11 ist weiter der eine Steg 13 eines Winkelbügels 16 schwenkbar gelagert, an dessen anderem Steg 14 das eine Ende einer Federvorrichtung 19, z.B. eine Kolbenstange 18, mittels einer Mutter 20 fest angeschraubt ist. Am andern Ende der Federvorrichtung 19, beispielsweise am Boden 21 eines Zylinders 22 der als Gasfeder ausgebildeten Federvorrichtung 19, ist ein Gewindebolzen 23 befestigt, welcher einerseits zur Befestigung eines zweiten Winkelbügels 24 mit einer Mutter 25 versehen ist und andererseits zur Führung eines Schaltstössels 26 dient. Wenn, wie in Fig. 1, die Federvorrichtung 19 eine Gasfeder ist, verriegelt der Schaltsstössel 26 die Federvorrichtung 19 in der jeweiligen Stellung. Wird jedoch der Schaltstössel 26 gegen den Zylinder 22 bewegt, ist die Federvorrichtung 19 entriegelt und das Stuhlgestell kann in seiner Lage verändert werden.The backrest support 7 is designed as a two-armed lever, of which one arm forms the only partially
Zur Betätigung des Schaltstössels 26 dient eine Verstelleinrichtung 30, deren Betätigungselement 31 über Schaltverbindungen 32, 33 mit einem zweiarmigen Winkelhebel 34 verbunden ist. Der eine Arm 35 des Winkelhebels 34 ist mit der Schaltverbindung 33 gekuppelt, während der andere Arm 36 auf den Schaltstössel 26 wirkt. Wird beispielsweise der Winkelhebel 34 im Gegenuhrzeigersinn geschwenkt, wird die Federvorrichtung 19 entriegelt, während beim Zurückschwenken des Winkelhebels 34 im Uhrzeigersinn in seine Ausgangsstellung die Federvorrichtung 19 verriegelt ist.An actuating
In Figur 2 ist das kinematische Ersatzbild des Stuhlgestells nach Figur 1 dargestellt, das sich aus dem Tragteil 2, dem Sitzträger 5 und dem Rückenlehnenträger 7 zusammensetzt. Die Bezugszahlen stimmen mit denjenigen nach Fig. 1 überein und werden deshalb nicht nochmals erläutert. Es sei noch erwähnt, dass der Winkelbügel 24 auf dem anderen Ende der Federvorrichtung 19 mit einem fünften Drehgelenk 27 am knieseitigen Ende des Tragteils 2 angelenkt ist.FIG. 2 shows the kinematic equivalent image of the chair frame according to FIG. 1, which is composed of the
Die Ausführung, Anordnung und Funktion der Verstelleinrichtung 30 wird anhand von Figur 3 und 4 beschrieben. Die Verstelleinrichtung 30 weist eine Schaltvorrichtung 40 auf, die sich im wesentlichen aus einem Schaltgehäuse 41 und zwei Schaltbolzen 38, 39 zusammensetzt, welch letztere in einer Bohrung 42 des Schaltgehäuses 41 verschiebbar geführt sind.The design, arrangement and function of the adjusting
In der Bohrung 42 des Schaltgehäuses 41 sind axial verlaufende Stege 43, beispielsweise drei Stege am Innenumfang verteilt als Geradführung angeordnet. Die Schaltbolzen 38, 39 weisen entsprechende Axialnuten 44, 44′ auf. Hierbei erstrecken sich die Axialnuten 44 des Schaltbolzens 38 über die gesamte Länge, während die Axialnuten 44′ beim Schaltbolzen 39 sich nur über einen Teil seiner Länge erstrecken und so, siehe Fig. 4, einen Anschlag am Ende der Stege 43 bilden.In the
Die gegeneinander gerichteten Stirnseiten der Schaltbolzen 38, 39 weisen eine Verzahnung 45, 46 auf, die sich aus steilen und flachen Flanken zusammensetzt, deren Funktion anhand von Fig. 5 noch erläutert wird.The mutually facing end faces of the
Am Schaltbolzen 38 ist ein Mitnehmerarm 49 angeordnet, in welchem die Schaltverbindung 32 in Form eines Drahtes 51 eines Bowden-Zuges befestigt ist. Wie aus Fig. 3 ersichtlich ist, weist der Draht 51 einen Haltekopf 52 auf, welcher in eine Nut 53 des Mitnehmerarmes 49 eingelegt ist. Der Draht 51 liegt in einer Druckfeder 54 und ist anschliessend in einem Stützsockel 55 mit einer Nut 56 geführt, an welchem sich die Druckfeder 54 abstützt. Ausserhalb des Stützsockels 55 ist der Draht 51 in einem biegsamen Führungsrohr 57 geführt, das am Betätigungselement 31 befestigt ist, während der Draht 51 an einem schwenkbaren Handgriff 58 desselben befestigt ist. Durch Ziehen des Handgriffes 58 kann der Schaltbolzen 38 gegen die Kraft der Druckfeder 54 verschoben werden. Hierzu ist auf der Oberseite des Schaltgehäuses 41 ein Schlitz 59 vorgesehen. Das Schaltgehäuse 41 weist zwei Befestigungslappen 60 auf, mit denen es am Tragteil 2 befestigt werden kann. Es kann aber auch nur ein Befestigungslappen 60 vorgesehen werden.A
Der andere Schaltbolzen 39 ist durch die weitere Schaltverbindung 33 in Form eines zweiten Bowden-Zuges mit dem einen Arm 35 des Winkelhebels 34 verbunden. Der zweite Bowden-Zug setzt sich aus einem Draht 61 und einem Führungsrohr 62 zusammen, welch letzteres sich an einem Stirndeckel 64 des Schaltgehäuses 41 abstützt. An dem Draht 61, an dessen Ende der Schaltbolzen 39 sich an einem Kopf 65 abstützt, ist eine Druckfeder 63 angeordnet, die sich mit ihrem einen Ende am Führungsrohr 62 und mit dem anderen Ende am Arm 35 abstützt, siehe Fig. 4. Dadurch übt die Druckfeder 63 eine Kraft im Uhrzeigersinn auf den Arm 35 aus, wodurch der Schaltstössel 26 sich in die Verriegelungsstellung der Federvorrichtung 19 bewegen kann. Gleichzeitig wird auch auf den Schaltbolzen 39 eine Zugkraft ausgeübt, durch die er gegen das Ende der Stege 43 anschlagen kann. Wird nun der Schaltbolzen 39 durch Ziehen des Handgriffes 58 über die Stege 43 hinaus bewegt und dann gedreht, so dass seine Axialnuten 44′ gegenüber den Axialstegen 43 des Schaltgehäuses 41 versetzt sind, nimmt der Schaltbolzen 39 diejenige Stellung ein, in welcher der Schaltstössel 26 die Federvorrichtung 19 entriegelt. Durch nochmalige Betätigung des Handgriffes 58 wird der Schaltbolzen 39 angehoben und nochmals gedreht, bis seine Axialnuten 44 mit den Stegen 43 fluchten, worauf beim Loslassen des Handgriffes 58 der Schaltbolzen 39 in seine Ausgangstellung zurückkehren kann, in welcher der Schaltstössel 26 in die Verriegelungslage der Federvorrichtung zurückkehren kann. Die vom Schaltbolzen 39 ausgeführte Drehung entspricht einer Stegteilung t.The other switching
Die Drehbewegung des Schaltbolzens 39 erfolgt durch die Verzahnung 45, 46, wie anhand von Figur 5 erläutert wird. Dort sind die beiden Schaltbolzen 38, 39 in abgewickelter Lage gezeigt, wobei auch die Axialstege 43 und die Axialnuten 44, 44′ dargestellt sind.The rotary movement of the switching
A entspricht derjenigen Stellung der Verstelleinrichtung 30, in welcher die Federvorrichtung 19 verriegelt ist. Die beiden Schaltbolzen 38, 39 liegen mit ihren Axialnuten 44, 44′ im Bereich der Axialstege 43. Durch Ziehen des Handgriffes 58 wird der Schaltbolzen 38 soweit angehoben, bis der Schaltbolzen 39 über dem Ende der Axialstege 43 liegt. Nun können sich die flachen Flanken 48 zueinander verschieben, da der Schaltbolzen 39 unter der Wirkung der Druckfeder 63 steht. Der Schaltbolzen 39 dreht sich somit in die Stellung B. Nun wird der Handgriff 58 losgelassen, sodass sich der Schaltbolzen 38 vom Schaltbolzen 39 entfernt, siehe C, welcher sich mit seiner flachen Flanke 48 an den Axialstegen 43 unter gleichzeitigem Drehen abwärts gleitet, siehe D. Der drehbare Schaltbolzen 39 hat somit zwei Teildrehungen zurückgelegt.A corresponds to the position of the adjusting
Wird nun der Handgriff 58 erneut gezogen, fährt der Schaltbolzen 38 gegen den Schaltbolzen 39, hebt ihn über das Ende der Axialstege 43, so dass die flachen Flanken aufeinander gleiten können und der Schaltbolzen 39 eine weitere Teildrehung macht, siehe E. Nun wird der Handgriff 58 losgelassen, der Schaltbolzen 38 bewegt sich zurück und gibt das Ende der Axialstege 43 frei, sodass die flache Flanke 48 des Schaltbolzens 39 am Ende des Axialsteges 43 abgleiten kann. Der Schaltbolzen 39 wird dadurch so lange gedreht, bis die Flanke der Axialnut 44 des Schaltbolzen 39 am Ende der Axialstege 43 anschlägt, siehe F. Beide Schaltbolzen 38, 39 können nun entlang der Axialstege 43 in die der Ausgangsstellung A entsprechende Stellung F zurückgleiten.If the
In Figur 5 ist angenommen, dass drei Axialstege 43 am Innenumfang des Schaltgehäuses 41 verteilt sind. Es sind dann für die Verzahnung sechs Zähne mit einer Steilflanke 47 und einer Flachflanke 48 erforderlich. Die Zahl der Axialstege 43 kann beliebig gewählt werden und dementsprechend sind auch die Zähnezahlen der Verzahnungen 45, 46 in doppelter Zahl vorzusehen.It is assumed in FIG. 5 that three
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89112090T ATE85744T1 (en) | 1988-07-15 | 1989-07-03 | ACTUATION DEVICE FOR A SPRING ELEMENT ON AN ADJUSTABLE CHAIR. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2721/88A CH676417A5 (en) | 1988-07-15 | 1988-07-15 | |
CH2721/88 | 1988-07-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0350748A1 true EP0350748A1 (en) | 1990-01-17 |
EP0350748B1 EP0350748B1 (en) | 1993-02-17 |
Family
ID=4240118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89112090A Expired - Lifetime EP0350748B1 (en) | 1988-07-15 | 1989-07-03 | Actuating device for a spring mechanism in an adjustable chair |
Country Status (8)
Country | Link |
---|---|
US (1) | US5080434A (en) |
EP (1) | EP0350748B1 (en) |
JP (1) | JPH02249509A (en) |
AT (1) | ATE85744T1 (en) |
CH (1) | CH676417A5 (en) |
DE (1) | DE58903560D1 (en) |
ES (1) | ES2038374T3 (en) |
PT (1) | PT91151B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0512194A1 (en) * | 1991-05-08 | 1992-11-11 | SIFA Sitzfabrik GmbH | Tilt adjustment device for seats, in particular rotatable office chairs |
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DE4216173A1 (en) * | 1992-05-15 | 1993-11-18 | Sifa Sitzfabrik Gmbh | Actuating device for adjusting mechanisms of seating furniture |
CH690019A5 (en) * | 1992-07-16 | 2000-03-31 | Giroflex Entwicklungs Ag | Supporting frame for a chair, in particular for an adjustable in height and tilt office chair. |
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IT242153Y1 (en) * | 1996-01-08 | 2001-06-04 | Alta Srl | DEVICE FOR REGULATING THE INCLINATION OF THE SEAT IN CHAIRS AND ARMCHAIRS IN GENERAL |
US5752414A (en) * | 1996-05-24 | 1998-05-19 | Teleflex Incorporated | Cable operated brake/ignition/transmission interlock |
US5775776A (en) * | 1997-01-22 | 1998-07-07 | Seating Specialities, Inc. | Lock for seat backs |
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JP4028914B2 (en) * | 1997-08-07 | 2008-01-09 | 中央発條株式会社 | Cable joint |
CA2246021A1 (en) * | 1997-08-29 | 1999-02-28 | Leggett & Platt Canada Co./Societe Leggett & Platt Canada | Chair tilt mechanism |
ITTO980034A1 (en) | 1998-01-16 | 1999-07-16 | Miotto Int Comp | MECHANICAL DEVICE FOR THE CONTROL OF THE SYNCHRONOUS MOVEMENT OF THE SEAT AND BACKREST OF A SEAT. |
US6045189A (en) * | 1998-09-10 | 2000-04-04 | Schooler; Paul T. | Seat back lock with pivoting locking member |
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US6378943B1 (en) | 1999-03-26 | 2002-04-30 | Northfield Metal Products Ltd. | Chair tilt lock mechanisms |
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US7331255B2 (en) * | 2001-09-21 | 2008-02-19 | Petrak Gregory H | Method and apparatus for tensioning an emergency brake system on a vehicle |
CA2460912A1 (en) * | 2001-09-21 | 2003-03-27 | Gregory H. Petrak | Method and apparatus for tensioning an emergency brake system on a vehicle |
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US20040080197A1 (en) * | 2002-10-25 | 2004-04-29 | Robert Kopetzky | Transmission amplifier for bowden cables and method of using the same |
US6971719B2 (en) * | 2003-03-21 | 2005-12-06 | L & P Property Management Company | Clutch actuator surface apparatus and method |
US6905445B1 (en) * | 2003-12-16 | 2005-06-14 | Giant Manufacturing Co., Ltd. | Resistance adjuster for adjusting a resistance-providing member on a stationary bicycle |
CN1930757B (en) * | 2004-02-06 | 2012-09-05 | L&P产权管理公司 | In-line actuator apparatus and method |
DE102004034229A1 (en) * | 2004-07-15 | 2006-02-16 | Schukra Gerätebau AG | actuator |
US7587956B2 (en) * | 2006-08-29 | 2009-09-15 | Franklin Products, Inc. | Device for controlling motion |
WO2009018471A1 (en) * | 2007-07-31 | 2009-02-05 | Petrak Gregory H | System and method for tensioning an emergency brake system |
US8172324B2 (en) * | 2008-06-06 | 2012-05-08 | Knoll, Inc. | Preference control mechanism |
US8096617B2 (en) * | 2009-06-16 | 2012-01-17 | Lear Corporation | Seat having tiltable seat cushion |
US20130255411A1 (en) * | 2010-12-22 | 2013-10-03 | Magna Closures, Inc. | Tensioning assembly for cable drive |
WO2013163458A2 (en) | 2012-04-25 | 2013-10-31 | Innovative System Solutions, Inc | Apparatus, system and method for tensioning an emergency brake system |
US10278504B2 (en) * | 2017-02-24 | 2019-05-07 | Living Style (B.V.I.) Limited | Cable connector for a chair function controller and operator |
US10342353B2 (en) * | 2017-06-20 | 2019-07-09 | Zhongwei Holding Group Co., Ltd | Chair reclining adjustment mechanism |
CN107080379B (en) * | 2017-06-20 | 2023-07-11 | 中威控股集团有限公司 | Chair and chair lifting adjusting control mechanism thereof |
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DE8512801U1 (en) * | 1985-05-02 | 1985-07-04 | Fundel, Renate, 8871 Rettenbach | Release device for gas springs |
GB2195238A (en) * | 1986-09-24 | 1988-04-07 | Giroflex Entwicklungs Ag | Chair frame |
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US2340830A (en) * | 1941-05-31 | 1944-02-01 | Arens Controls | Control mechanism |
GB8406697D0 (en) * | 1984-03-14 | 1984-04-18 | Teleflex Morse Ltd | Seat recline unit |
JPS6382602A (en) * | 1986-09-24 | 1988-04-13 | ジロフレツクス エントヴイツクルンクス アクチエンゲゼルシヤフト | Stand for chair |
US4798100A (en) * | 1987-09-18 | 1989-01-17 | Babcock Industries Inc. | Automatic adjustment device for cable control systems |
-
1988
- 1988-07-15 CH CH2721/88A patent/CH676417A5/de not_active IP Right Cessation
-
1989
- 1989-07-03 AT AT89112090T patent/ATE85744T1/en not_active IP Right Cessation
- 1989-07-03 EP EP89112090A patent/EP0350748B1/en not_active Expired - Lifetime
- 1989-07-03 ES ES198989112090T patent/ES2038374T3/en not_active Expired - Lifetime
- 1989-07-03 DE DE8989112090T patent/DE58903560D1/en not_active Expired - Fee Related
- 1989-07-13 PT PT91151A patent/PT91151B/en not_active IP Right Cessation
- 1989-07-14 US US07/380,097 patent/US5080434A/en not_active Expired - Fee Related
- 1989-07-15 JP JP1183545A patent/JPH02249509A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0052832A2 (en) * | 1980-11-21 | 1982-06-02 | Protoned B.V. | Control-head for pneumatic springs, particularly for adjusting seats of sitting furniture |
DE8512801U1 (en) * | 1985-05-02 | 1985-07-04 | Fundel, Renate, 8871 Rettenbach | Release device for gas springs |
GB2195238A (en) * | 1986-09-24 | 1988-04-07 | Giroflex Entwicklungs Ag | Chair frame |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0512194A1 (en) * | 1991-05-08 | 1992-11-11 | SIFA Sitzfabrik GmbH | Tilt adjustment device for seats, in particular rotatable office chairs |
Also Published As
Publication number | Publication date |
---|---|
JPH02249509A (en) | 1990-10-05 |
EP0350748B1 (en) | 1993-02-17 |
ATE85744T1 (en) | 1993-03-15 |
PT91151B (en) | 1995-07-03 |
US5080434A (en) | 1992-01-14 |
CH676417A5 (en) | 1991-01-31 |
ES2038374T3 (en) | 1993-07-16 |
DE58903560D1 (en) | 1993-03-25 |
PT91151A (en) | 1990-02-08 |
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