EP0205097A2 - Chaise de travail - Google Patents

Chaise de travail Download PDF

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Publication number
EP0205097A2
EP0205097A2 EP86107629A EP86107629A EP0205097A2 EP 0205097 A2 EP0205097 A2 EP 0205097A2 EP 86107629 A EP86107629 A EP 86107629A EP 86107629 A EP86107629 A EP 86107629A EP 0205097 A2 EP0205097 A2 EP 0205097A2
Authority
EP
European Patent Office
Prior art keywords
seat
support
axis
spring
backrest
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
EP86107629A
Other languages
German (de)
English (en)
Other versions
EP0205097A3 (en
EP0205097B1 (fr
Inventor
Heinz-Peter Suhr
Bernd Weinberger
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.)
August Froscher & Co KG GmbH
August Froscher GmbH and Co KG
Original Assignee
August Froscher & Co KG GmbH
August Froscher GmbH and Co KG
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 August Froscher & Co KG GmbH, August Froscher GmbH and Co KG filed Critical August Froscher & Co KG GmbH
Priority to AT86107629T priority Critical patent/ATE47289T1/de
Publication of EP0205097A2 publication Critical patent/EP0205097A2/fr
Publication of EP0205097A3 publication Critical patent/EP0205097A3/de
Application granted granted Critical
Publication of EP0205097B1 publication Critical patent/EP0205097B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • 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
    • 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 work chair with a seat and backrest and a base frame with support and adjustment mechanism, the seat and backrest being divided into at least two parts which are articulated to one another and which are supported by levers or arms on the support and adjustment mechanism with the aid of seat and backrest parts Components are supported.
  • the seat and backrest are z. T. divided into several sections and connected to each other in an articulated and / or buildable manner. Since the user very often has to change his sitting position during the page, the chair mechanics should also be such that its function and mobility automatically adapt to the respective needs at least in some areas.
  • the back In the forward leaning seating position for writing by hand or reading documents lying on a table top, the back is inclined forward. In the upright sitting position, especially when operating machines, the back is approximately vertical. In the relaxation or listening position, e.g. B. when talking on the phone or talking, it is pleasant to be able to tilt your back. These three sitting positions should be easy to take up and optimal support should be given to the respective body parts.
  • an articulated connection between the seat and backrest is provided, such as, for example, according to DE-OS 33 22 450 or DE-OS 30 36 993, in the first case an articulated lever construction with a fixed articulated axis and in the second case a bendable connection between the seat and backrest are.
  • a large number of other constructions have a similar structure. They differ essentially in the precise position of the articulation points and the length of the levers of the articulated polygons in order to achieve the correct sequence of movements. Some constructions try to position the pivot points of the various supports so that they are largely meaningfully adapted to the pivot point of the user's hip joint. In many cases, this cannot be achieved, and this results in anatomically unfavorable support and movement conditions with some supports or movement sequences.
  • the back In the forward-tilted handwriting position, the back generally has no contact with the backrest. When moving back, this only begins approximately when the machine operating position is reached. It has now been shown that it is expedient to make the support between the lower lumbar region and the pelvis unchangeable in the angular position and to adapt the motion sequences of the kinematics to these conditions.
  • Such a 'construction is known in its basic structure from DE-GM 77 21 954.
  • the seat and backrest are formed from three parts, the seat part being divided into a flat part and a rear wedge part. Flat part and wedge part are connected to each other by a horizontal transverse axis. Wedge section and backrest can be ' ' fixed together or be connected to each other via an elastic connection.
  • the supporting kinematics is such that when the backrest is pressed back against a self-locking gas spring, the angle between the flat part and the wedge part of the seat part is increased and the front region of the flat part of the seat, which supports the thighs, rises, while the wedge part drops overall and until pivoted to an almost horizontal end position.
  • the flat part is supported via a hinge axis fixed to the frame in the area of the hinge axis between the flat part and the wedge part and a presumably slidable support on a rocker located approximately in the middle area of the flat part.
  • the rocker in turn, is articulated far in front of the hinge axis of the flat part on the chair frame and has a rocker-like support lever which is continuous under the other hinge axis and on which the wedge part is fixedly arranged.
  • This rocker is provided at the rear end in the area between the wedge part and backrest with an articulated support on a self-locking gas spring.
  • the self-locking gas spring is in turn arranged obliquely downwards at the front and articulated there on the frame.
  • This mechanism requires a plurality of articulated levers with six articulated axes or articulated areas.
  • this kinematics specifies a very specific movement and it is selected so that the front region of the flat part of the seat is raised when leaning back.
  • a device for adjusting the seat angle on chairs in which the seat can be adjusted with respect to the base frame with a cam arrangement in its inclination.
  • the backrest in turn is arranged on the base frame in an adjustable manner. They are not linked together.
  • This chair is not suitable for dynamic sitting. It shows everyone how to use tilt adjustment cam and an articulated axis to achieve an appropriate tilt adjustment, in which the curved path includes the detent. However, this version is not suitable for direct use on a support mechanism for dynamic seat and backrest support.
  • the invention has for its object to provide a support and adjustment device for a work chair that allows the preselectable and / or automatically assumed relative position of the various support elements of the seat and the backrest in a simple and safe functioning manner with a simple structure and anatomically favorable support.
  • a first solution area provides that in a work chair with seat and backrest and foot frame with support and adjustment mechanism, the seat being divided into a front seat part and a rear seat part, which are articulated to one another, and the backrest with the rear seat part is connected to a largely unchangeable angle and the seat parts on the frame Articulated axes are pivotable and are supported against their force in their relative angular position relative to one another, the rear seat part being supported on a frame-fixed articulated axis located below the joint axis of the seat part so that it rests downwards from the foremost stop position of the spring-loaded support when pressure is exerted on the backrest tends to be the special feature of the invention is that the two hinged seat parts are supported by only one support or a few supports on the base and the front seat part near the front end of the seat has its articulated axis, the hinge axis of the rear seat part behind the hinge axis of the front seat part is located and one of the hinge axes fixed to the frame is movably
  • the seat surface parts can be formed with the aid of two articulated frame parts or frame-like shell parts, under which seat frame supports projecting downwards and inwards are fastened, which have fastening sleeves or the like that can be plugged onto the joint axes.
  • the supports can be carried out in a stable manner and the forces in the seat can be transmitted, which take place both with regard to the load applied by the person and with regard to the transmission of the support forces from the front seat area via the rear seat area to the backrest and vice versa.
  • the articulated axes and the support on the base are in this area close to each other and thus enable the favorable transmission of forces and especially the particularly favorable movement of the rear seat part, which begins to pivot from a position that is already slightly tilted backwards relative to the top dead center position when the backrest is tilted backwards.
  • the plane in which the two articulation axes of the support lie and the seat frame level or the main seat surface level appropriately enclose an acute angle of a few degrees in the front spring stop position ...
  • the position of the hinge axes and the length of the levers are expediently chosen such that the front seat part sweeps over an angular range of 3 ° and the backrest over an angular range of approximately 16 ° when pivoting against spring force. Then you get through the special construction with the joints and the compensation in the seat shells and the upholstery an angle ratio of about 1: 2.5 to 1: 3, as it is favorable for the relative angle of inclination between the seat and backrest in the rearmost position .
  • the sliding axis can be provided in the area of the base frame if the other design is chosen accordingly.
  • the provided on the column support part Swivel axis is immovable and the front joint axis mounted on the swivel support part are designed to be displaceable backwards against spring force.
  • the rear axle which supports the entire remaining joint parts in a solid and tilt-free manner, is available and the front axle is available as a sliding axle, which does not impair stability.
  • An essential advantage is also to be seen in the fact that the spring force is now transmitted to the backrest via the front seat part and its support as a tie rod, which results in favorable lever and force transmission ratios.
  • a lock in the area of the sliding axle at the front can be conveniently accommodated, especially since a seat height adjustment is usually still required at the rear.
  • a spring force adjustment device can also be conveniently provided in the vicinity of the sliding axis, where it can be actuated well because it lies in front.
  • a work chair with a seat and backrest and a base frame with support and adjustment mechanism, with seat and the backrest are supported movably in their angular position on articulated axles and against spring force which has the special feature that the seat and backrest are supported on the base frame by only two supports or two pairs of supports are whose one articulated support axis (swivel axis) is attached to the part of the support and adjustment mechanism (column support part) which is firmly connected to the base frame and the other articulation axis is mounted on a swivel bar part which in turn is mounted on the first-mentioned articulated axis fixed to the base frame ( Pivot axis) is pivotally mounted and a tilt adjustment device is arranged between the column support part fixed to the base frame and the pivot support part, by means of which the relative height of the pivot axis mounted pivotally tiltable
  • an additional inclination adjustment option is provided, which allows the initial position of the seat and / or backrests to be adjusted, and that with the joint axes which are already present or necessary, and in addition the an articulated axis is used at the same time to support the seat part and to support the supporting part, which reduces the number of components and improves the clarity of the construction and kinematics, without taking the inclination adjustment into account in the special design of the kinematics in particular lever lengths or positions of the axes would.
  • Such an inclination adjustment can also be carried out if the one axle is not sprung and the suspension is provided at a different location than in the exemplary embodiment and if the backrest is not firmly connected to seat parts.
  • it is of particular importance to provide a basic inclination adjustment because this is the starting position especially for the bent paperwork posture and the Adaptation to other user needs is made considerably easier with simple means.
  • the inclination adjustment device can be achieved in many ways, for example by interposed screw parts or the like.
  • a particularly advantageous embodiment provides that the inclination adjustment device is formed with the aid of at least one cam disc mounted pivotably about a turning axis provided on one of the mutually adjustable support parts, to which a cam support element, for example a coupling pin, attached to the other support part acts, and wherein an adjustment handle and Locking means are provided.
  • a screwing device requires corresponding threads and a corresponding space
  • a curve adjustment device can be built flat and the curve inclination can be well adapted to the requirements. It can also be predominantly formed from easily produced stamped and turned or molded parts.
  • one expediently provides a column support part with two arm-shaped column support legs encompassing the spring space and facing forwards, these having outward-pointing coupling pins in the region of their front ends, which extend into the Intervene cam slots of the inclination cams, which in turn rest only on the outer surfaces with play and move inside the support legs of a U-shaped swivel support part that overlaps the column support legs and the inclination cams, all other components of the support and adjustment mechanism being located, the inclination cams using a, preferably divided into individual bearings, the axis of rotation are mounted on the swivel support part.
  • Such an easy-to-manufacture and easy-to-assemble design is also easy to operate at a convenient location and offers great operational reliability.
  • a work chair with a seat and backrest as well as a foot frame with support and adjustment mechanism, the seat and backrest being divided into at least two parts that are articulated and the parts are supported with separate support levers, between which and / or the support elements fixed to the frame, at least one Spring is arranged, which is equipped with an adjusting device that changes the spring force, as a special feature that the spring force adjusting device is formed with an angularly adjustable toggle lever, which has a knee element in the knee joint, which by means of a toggle lever support element (toggle lever housing ) supported adjusting screw is adjustable.
  • toggle lever arrangements allow the support distance, which can be changed in terms of their support spacing, to support large forces with small actuation forces. Precisely these are conditions that a chair spring adjustment requires, but have not been used at this point, although there are various spring adjustment devices such. T. with screws and large buttons and the like.
  • the toggle lever arrangement is used here particularly cheaply because the spring force of a compression coil spring increases progressively during compression and the adjusting force of a toggle lever decreases with increasing extension due to the changed angular position.
  • Such a favorable combination of two properties for a small-scale arrangement ensures long, safe, easy-to-use operating conditions. It is expedient to position the toggle lever arrangement in the axial direction of a compression spring together with the latter in the plane of the two joint axes (pivot axis and sliding axis). to support yourself on this. This means that no further transmission mechanisms are required and the forces are directly and cheaply supported.
  • the toggle lever arrangement can expediently be arranged in a box-like toggle lever housing which is open at the front and at the top and which ; in turn supports the set screw acting on the knee element and on the other hand supports the abutment of the knee lever and also a spring bearing.
  • a box-like element can also be conveniently arranged in the accommodation of the supporting and adjusting mechanism, which is also designed with parallel walls, and offers favorable manufacturing and connection conditions for the remaining elements.
  • the spring bearing can expediently be a spring support wall of the toggle lever housing, which carries a guide pin in the pressure plane, on which a spring counter bearing part is displaceable, which holds and centers the compression spring between its support region and the spring support wall. This results in a spring and spring adjustment unit that is easy to manufacture and inexpensive to install.
  • the spring counter bearing part expediently has a system part cylinder for support on the hinge axis or its axle tube.
  • the front toggle lever facing the sliding axis expediently has a partial cylinder contact element, which is supported directly on the sliding axis.
  • the support and bearing elements for the support which rotates only slightly, are inexpensively integrated into the components which are required anyway.
  • the toggle lever parts are expediently formed by double-armed, interlocking elements, the rear of which are supported in the toggle lever housing side walls with the aid of a support pin.
  • the sliding axis or the suspension device can expediently be equipped with a locking device which prevents the displacement movement. This can act either in the area of the sliding element of the spring or directly in the area of the displaceable axis.
  • the locking device is formed with a locking pivoting lever pivotable about the sliding axis, which is supported in the locking position approximately in the plane connecting the axes to housing parts of the pivot bearing part having the longitudinal sliding bearing and with its locking from the locking position to one Sliding plane parallel position is pivotable about 90 °.
  • the locking device can have two disk-shaped arms, which are arranged outside the toggle lever housing enclosing it and against which the limiting collars of the sliding bearings rest against one another for mutual position fixing.
  • the various, interlocking elements with a relatively large torsion-resistant support base are nevertheless accommodated in a manner that is easy to assemble and saves space.
  • the disc-shaped arms can be connected by a locking web, the locking ends of which protrude above the disc-shaped arms and lie in the region of the supporting legs of the pivoting support part, and the locking pivoting lever has a pivoting rod with a handle, which is preferably located laterally below the front region of the seat.
  • the special feature is that various supporting and adjusting elements are formed by several partially open, U-shaped inner spacings on the respective outer spacing of the other nested supporting and adjusting housing parts.
  • the work chair 10 has a five-arm base 11, with conventional casters 12 and a height-adjustable column 13 and a body support 14 with seat 15 and backrest 16, which are attached and supported on a frame 17 in the manner described below.
  • the frame 17 consists of two frame parts, namely a front seat frame part 17.1 and a rear seat and back frame part 17.2. These are articulated to one another with the aid of two joints 18.1 and 18.2 and the joint axis 18.
  • the axis 18 lies in the area of the user's ischial bumps. A peculiarity can be seen in this.
  • the rear seat frame part 17.3 serves to support the buttocks of the user via the cushion area of the rear seat part 15.2 and is essentially immovably connected to the back frame part 17.4 and the associated padding 16.4, but is padded in such a way that the pelvis and lower part of the spine are always approximately the same angular position to each other.
  • On the front seating area 15.1, the support for the thighs is designed in the usual way with a front rounding 15.6 for support up to approximately the knee area.
  • the two seat frame parts are each over two seat. frame supports 20 and 21 supported on axes 22 and 23.
  • the seat frame supports are designed as push-on elements with fastening sleeves, which are suitably screwed or otherwise connected to the frame parts or the shell.
  • the rear hinge axis is designed as a pivot axis 23 which is fixed to the frame and is mounted in a column support part 25.
  • the column support part 25 has two column support legs 25.1 and 25.2, which project tangentially forward from the part-cylindrical connection area 25.3.
  • the column support part 25 is attached to the support tube 26 of the height-adjustable column 13 in a suitable manner, for example welded.
  • the pivot axis 23 since it serves several purposes, is designed with multiple members. It has an inner rod-shaped support axis 23.1 and an axis tube 23.2 in which the support axis 23.1 is rotatably supported by plastic bearings, not shown.
  • the seat frame supports 21.1 and 21.2 are attached to the ends of the pivot axis 23, just as the seat frame supports 20.1 and 20.2 are attached from the outside to the front joint axis of approximately the same length, which is designed as a sliding axis 22.
  • the shift shaft 22 is supported in a pivot support member 28 which ragschenkeln as an extreme, to open below U-profile-shaped support part with two T 28.1 and 28.2 as well as a connecting web is designed 28.3.
  • the swivel support part 28 encompasses all other elements of the support, swivel and adjustment mechanism.
  • the swivel support part 28 has in each leg 28.1 and 28.2 in the rear bearing area 28.5 and 28.6 a profiled, plastic pivot bearing 29: 1 and 29.2, which is rotatably and fitted onto the axle tube 23.2 from the two outer sides and into which from FIG. 3 , 5 and 8 in their shape visible profiled bearing recesses 30 fits.
  • elongated holes 31.1 and 31.2 are provided, in which sliding bearings 32.1 and 32.2 made of plastic and each with an inner limiting collar 32.3 and 32.4 are inserted from the inside.
  • the sliding bearings 32 have a recess corresponding to the diameter of the sliding axis 22 and allow a stroke H, as can be seen from FIGS. 5 and 8, unless the locking described below prevents the springing.
  • the sliding axis 22 is spring-loaded against the pivot axis 23.
  • the spring support which is adjustable in terms of its hardness or spring force, can be seen particularly well from FIGS. 3, 4, 6 and 7.
  • An upward and forward toggle lever housing 35 is provided with a rear spring support wall 35.3 and a lower housing wall 35.4 and spring housing side walls 35.1 and 35.2.
  • a guide pin 36 is fastened, which protrudes to the rear and on which a spring counter bearing part 37 is slidably guided.
  • the spring counter bearing part has a shaft 37.1 with a guide bore 37.2 which fits and slides on the guide pin 36.
  • the spring counter bearing part 37 has a support region 37.4 with a contact part cylinder 37.5. With this area, the spring counter bearing part, as can be seen particularly in FIG. 6, is supported on the axle tube 23.2.
  • the compression spring 38 centered on the shaft 37.1 is designed as a strong helical compression spring and is supported on the spring counter bearing part 37 on the one hand and on the spring support wall 35.3 on the other hand, as can be seen from FIGS. 3, 4, 6 and 7.
  • a support pin 41 is fastened in the toggle lever housing 35 in the two side walls 35.1 and 35.2. It lies in the connecting plane E, in which the axis of the guide pin 36 also lies.
  • the double-armed toggle lever 42 is supported on the supporting pin 4l, which in turn is articulatedly connected to the knee element 43.
  • Connected to the knee element 43 is the front double-armed toggle lever 44, which has a part-cylinder contact element 44.1, which is supported directly on the front sliding axis 22 and which has a width extension corresponding to the distance between the two arms in order to ensure stable support.
  • an adjustment screw 45 arranged transversely to the plane E, which it penetrates in the middle in its threaded bore and which is equipped with a stroke limiter 46 and has a shaft 45.1 which is provided in a slot 47 of the toggle lever housing wall 35.4 so as to be longitudinally displaceable.
  • a spring locking device 50 is provided.
  • a U-shaped locking swivel lever 51 in profile is provided. This consists of two arms 51.1 and 51.2, which are disc-shaped and rest on the outside of the side walls 35.1 and 35.2 of the toggle lever housing 35 and are pivotably mounted on the sliding shaft 22 with suitable bearing bores 51. As a front connection they have a locking web 51.3, which is inserted into corresponding recesses and ver with the disk-shaped arms 51.1 and 51.2. is welded.
  • a swivel rod 52 is welded on, which is equipped with a handle 52.1 (FIG. 1), which lies laterally under the seat 15 and is used for actuation.
  • the side walls 28.1 and 28.2 of the swivel support part 28 are designed in their front regions 28.7 and 28.8 in the upper corner region 28.9 with a quarter circle, the center of which is the center point of the front half-circle of the elongated bearing hole and which has a somewhat smaller radius -.iat than the distance of the support surface 51.9, the arresters 51.5 and 51.6 from the center of the sliding axis 22.
  • the downward-reaching support region 53 is approximately tangential, so that the arresters 51.5 and 51.6 can rest there and, as can be seen, prevent displacement of the sliding axis 22.
  • the sliding axis In the position not shown, pivoted upward about the center of the sliding axis 22, the sliding axis can be freely moved backwards in its elongated hole because the locking elements 51.5 and 51.6 are parallel to the plane E.
  • the swivel support part 28 engages around the column support part 25 from the outside and is supported in an adjustable manner in relation to this.
  • a tilt adjustment device 60 is provided for this. This has two inclination cams 61.1 and 61.2, as can be seen particularly well in FIGS. 3, 8 and 9. "These are in turn pivotally fastened with bearing nuts 62 and bearing bolts 63 as rotation axis 64 in the support legs 28.1 and 28.2 of the swivel support part 28.
  • the inclination cams 61 each have a cam slot 61.3 and 61.4 which, as can be seen in FIG. 8, increases considerably at a distance from the turning axis 64 and in which a coupling pin 65 engages.
  • the coupling pins 65.1 and 65.2 are fastened in the region of the front end of the column support leg 25.1 and 25.2 projecting outwards, as illustrated in FIGS. 3 and 9, and each engage in the cam slot 61.3 and 61.4.
  • the inclination cams 61.1 and 61.2 have actuating arms 61.5 and 61.6 with inwardly bent spring supports 61.7 and 61.8 on which the detent springs 66.1 and 66.2 are supported. As shown in FIG. 9, these act on the actuating bracket 67.
  • This is designed as a bracket part which connects the two actuating arms 61.5 and 61.6 and can be displaced downward against spring force and which has semi-cylindrical locking projections 67.3 and 67.4 on its side arms 67.1 and 67.2. These are arranged such that they can engage in the semicircular locking recesses 68.
  • the latching depressions 68 are punched out in a circle around the axis of rotation 64 at a suitable distance in the side walls 28.1 and 28.2 of the swivel support part 28; 5, namely arranged in a part-circle, so that the inclination cams 61 can be pivoted and locked in several positions, so that the relative height of the sliding axis 22 relative to the pivot axis 23 to adjust the seat and backrest output inclination can be changed over a wide range.
  • actuation end 70 In the support tube 26 there is a height adjustment device, not shown, of which only the upper actuation end 70 can be seen. To adjust the height, this actuation end 70 must be pressed.
  • an actuating lever 71 is provided, which is pivotably mounted in bearing bores 72. 3 and 6, the bearing bores 72 are formed in the uppermost regions of the column support legs 25.1 and 25.2 and they take up the axis of the actuating lever 71. Swivel limits 73 form the system for the rattle-free support of the height adjustment device in one end position. The operating lever is omitted.
  • the column 13 of the base frame is adjusted to the desired starting height for the user in the usual way with the aid of the actuating lever 71.
  • the initial inclination of the seat 15 and the backrest 16 is adjusted.
  • the actuating bracket 16 is pulled downward against the force of the springs 66, so that the locking projections 67.3 and 67.4 lock the recesses 68. ' leave.
  • the actuating bracket 67 By pivoting the actuating bracket 67 forwards or backwards, the position of the plane E relative to the vertical column 13 or to the floor is adjusted in its inclination such that the sliding axis 22 assumes a desired height position relative to the pivot axis 23.
  • This setting is chosen so that the seat 15 for most uses of the chair is comfortable in the non-reclined position. That is, a very much by hand writing user will choose an inclination in which the seat, not shown in Fig. 2, runs horizontally in the starting position, but is inclined slightly at the front, so that the plane E roughly horizontal. In this position, one can bend forward comfortably and write by hand without the blood circulation in the legs being impaired by excessive support on the front edge region 15.6 of the seat 15.
  • the toggle lever is stretched more or less and the prestress of the spring 38 is thereby set.
  • the spring locking device 50 must be pivoted with its pivot rod 52 upward, so that the locking 51.1 and 51.2 are parallel to the plane E and allow free movement.
  • the rear seat part 15.3 and backrest 16 pivot around the pivot axis 23 fixed to the frame, maintaining their relative angular position to one another, so that the spine and pelvis maintain the anatomically favorable position relative to one another.
  • the term "largely unchangeable angle" is to be understood in this sense. Certain elasticities will always be present in the frame or shell construction or the upholstery and are also desirable. However, no articulated or easy to bend elastic connection between the rear seat part and backrest should be provided.
  • the articulated axis 18 will move downward with respect to the pivot axis 23, since it moves on a corresponding partial arc and not even in the preferred embodiment shown the top dead center position, but starting from a slightly twisted starting position and immediately travels a not inconsiderable way down when pivoting.
  • the coupled front seat part is 15.1 entrained with the front seat-frame part 17 1 and pivoted around the slide axis 22, which is easily pivoted because of the fixed coupling of and staring formation in the slot 31.1 and its associated sliding bearings 32 and moved backward, so that the front seat frame part 17.1 takes a slightly rearward downward sloping position, which is, however, less inclined than the inclination of the rear seat frame part 17. 3 because it is further forward and is equipped with a long coupling lever arm in the front seat frame part 17.1 and is accordingly carried along becomes.
  • the knee joints practically do not rise because the sliding axis 22 is arranged near the knee and even with a slight push backwards and possibly downwards, so that the front seating area with the rounded portion 15.6 practically retains its height.
  • the front seating area with the rounded portion 15.6 practically retains its height.
  • the angle between the plane E and the front seat frame part 17.1 and the rear seat frame part 17.3 in the extended position - as shown in FIG. 2 - is advantageously about 10 °.
  • An angular range of approximately 3 ° is expedient for pivoting the front “seat frame part 17.1 about the sliding axis 22.
  • An angular range of approximately 16 ° is expedient for pivoting the rear seat and back frame part 17.2 about the pivot axis 23.
  • This ratio of approximately 1: 5 would in itself cause an excessive angle of inclination between the thighs and back, but the elastic design of the seat shells or other support elements of the upholstery compensates for the entire seat angle, so that overall an angle ratio in the extremely swung-back position of approximately 1: 3 is reached.
  • the support of the seat frame parts is shown with two-part seat frame supports, that is, with pairs of seat frame supports on continuous axes in the exemplary embodiment.
  • seat frame supports instead of such paired seat frame supports, one can also provide one-piece seat frame supports which are articulated accordingly.
  • the alternatives in the claims are to be understood, where it says only one support or a pair of supports.
  • levers and joints that differ from constructions that are viewed in a kinematic level, but that do not provide better dynamic seat support.
  • the rear pivot axis is used for multiple support of pivotable parts, namely the support of the seat frame supports 21.1, 21.2 and thus the rear seat part and the back, and on the other hand the pivotable support of the pivot support part 28 and also the pivotable support of the spring 38 via the spring counter bearing part 37 with the contact part cylinder 37.5.
  • pivotable parts namely the support of the seat frame supports 21.1, 21.2 and thus the rear seat part and the back

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Seats For Vehicles (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP86107629A 1985-06-14 1986-06-05 Chaise de travail Expired EP0205097B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86107629T ATE47289T1 (de) 1985-06-14 1986-06-05 Arbeitsstuhl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853521488 DE3521488A1 (de) 1985-06-14 1985-06-14 Arbeitsstuhl
DE3521488 1985-06-14

Publications (3)

Publication Number Publication Date
EP0205097A2 true EP0205097A2 (fr) 1986-12-17
EP0205097A3 EP0205097A3 (en) 1987-09-02
EP0205097B1 EP0205097B1 (fr) 1989-10-18

Family

ID=6273360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107629A Expired EP0205097B1 (fr) 1985-06-14 1986-06-05 Chaise de travail

Country Status (7)

Country Link
US (1) US4695093A (fr)
EP (1) EP0205097B1 (fr)
JP (1) JPH0734772B2 (fr)
AT (1) ATE47289T1 (fr)
AU (1) AU5855286A (fr)
DE (2) DE3521488A1 (fr)
ZA (1) ZA864324B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0368002A1 (fr) * 1988-11-07 1990-05-16 Wilhelm Link GmbH & Co. KG Stahlrohrmöbel Chaise, notamment chaise de bureau
DE4235691A1 (de) * 1991-10-22 1993-06-03 Itoki Crebio Corp Kippsteueranordnung fuer einen stuhl
US5261723A (en) * 1987-12-28 1993-11-16 Isao Hosoe Ergonomic chair having the seat at a varying position
CN104605648A (zh) * 2015-01-29 2015-05-13 安吉富和家具有限公司 一种靠背坐垫同步异角度底盘

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567012A (en) * 1986-04-10 1996-10-22 Steelcase, Inc. Chair control
US4718726A (en) * 1987-07-07 1988-01-12 Estkowski Michael H Chair seat tilt control
DE3724582A1 (de) * 1987-07-24 1989-02-02 Inaba Seisakusho Ltd Sitzmoebel
DE3737492C2 (de) * 1987-11-05 2003-03-27 Wilkhahn Wilkening & Hahne Stuhl mit vier Drehgelenken
DE3737491C2 (de) * 1987-11-05 2003-03-20 Wilkhahn Wilkening & Hahne Stuhl
US4889384A (en) * 1988-07-10 1989-12-26 Leggett & Platt, Incorporated Knee-action chair control
US4979778A (en) * 1989-01-17 1990-12-25 Brayton International, Inc. Synchrotilt chair
US5106157A (en) * 1989-03-01 1992-04-21 Herman Miller, Inc. Chair height and tilt adjustment mechanisms
EP0572504B1 (fr) * 1991-02-20 1994-08-10 HOSOE, Isao Chaise ou fauteuil ameliore ergonomiquement
DE4220307C2 (de) * 1991-06-26 2002-11-21 Okamura Corp Stuhl
US5203853A (en) * 1991-09-18 1993-04-20 Herman Miller, Inc. Locking chair tilt mechanism with torsion bar
US5267777A (en) * 1992-01-15 1993-12-07 Lavaco Industries, Inc. Resilient chair support
DE9204874U1 (fr) * 1992-04-08 1992-06-17 Sifa Sitzfabrik Gmbh, 8458 Sulzbach-Rosenberg, De
DE4318516C2 (de) * 1993-06-03 1997-03-13 Wilkhahn Wilkening & Hahne Stuhl mit einer Vorrichtung zur Veränderung des Bewegungsspielraumes eines beweglichen Bauteiles
US5427434A (en) * 1993-07-30 1995-06-27 Leggett & Platt, Incorporated Chair tilt and height adjustment mechanism
US5577807A (en) 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
US5871258A (en) * 1997-10-24 1999-02-16 Steelcase Inc. Chair with novel seat construction
DE29819143U1 (de) * 1998-10-21 1999-02-11 Drabert Gmbh Bürostuhl mit einer nachführbaren Rückenlehne
DE20003313U1 (de) * 2000-02-23 2001-07-05 Koenig & Neurath Ag Federeinheit zur Gewichtseinstellung eines Stuhls
US20030132653A1 (en) * 2001-10-18 2003-07-17 Doug Thole Tension control mechanism for a chair
DE20319455U1 (de) * 2002-12-31 2004-04-22 Metalseat S.R.L., Galliera Veneta Vorrichtung zur Einstellung der Federdruckkraft in einem Gelenk für Sitze
US7048335B2 (en) * 2003-06-05 2006-05-23 Steelcase Development Corporation Seating unit with crossbar seat support
DE202005006960U1 (de) * 2005-04-28 2006-08-31 Bock 1 Gmbh & Co. Kg Synchronmechanik
JP5024778B2 (ja) * 2006-03-28 2012-09-12 コクヨ株式会社 椅子
JP5004152B2 (ja) * 2006-03-28 2012-08-22 コクヨ株式会社 椅子
JP4803667B2 (ja) * 2006-07-07 2011-10-26 株式会社イトーキ 椅子
JP4803668B2 (ja) * 2006-07-10 2011-10-26 株式会社イトーキ 椅子
JP5154095B2 (ja) * 2007-02-27 2013-02-27 株式会社岡村製作所 椅子における支基の構造
US7784870B2 (en) * 2007-03-13 2010-08-31 Hni Technologies, Inc. Six bar mechanism and control for chair
EP1992254A1 (fr) * 2007-05-16 2008-11-19 Effe Tre S.r.L. Dispositif de changement de réglage d'un siège
DE102008007569A1 (de) * 2008-02-05 2009-08-06 Wilkhahn Wilkening + Hahne Gmbh + Co. Sitzmöbel
US7530637B1 (en) * 2008-03-18 2009-05-12 Yao-Chuan Wu Chair assembly
BR112012021407B1 (pt) * 2010-02-26 2020-06-09 Donati Spa dispositivo para sincronizar a inclinação do encosto e do assento de uma cadeira
US8251449B2 (en) * 2010-04-26 2012-08-28 Yao-Chuan Wu Multi-section angle adjusting structure for a chair back
JP5490175B2 (ja) * 2012-05-15 2014-05-14 コクヨ株式会社 椅子
US9072383B2 (en) * 2012-08-16 2015-07-07 L&P Property Management Company Modular chair mechanism with self-weighing
US9458905B2 (en) * 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method
PL2886015T3 (pl) 2013-12-17 2017-01-31 Donati S.P.A. Fotel z regulowanym oparciem
US9414680B2 (en) * 2014-04-09 2016-08-16 Dongguan Kentec Office Seating Co., Ltd. Flexible tilt adjustment device for a chair back
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
JP6826043B2 (ja) 2015-04-13 2021-02-03 スティールケース インコーポレイテッド 着座用構成体
CN108577318B (zh) * 2018-05-29 2023-06-27 沈阳飞机工业（集团）有限公司 一种外骨骼工作椅及其使用方法
CN112378845B (zh) * 2021-01-04 2023-09-26 中交国通公路工程技术有限公司 一种便于移动式路面摩擦系数测试仪
CN114098335B (zh) * 2021-11-17 2024-01-19 安吉合萱家居有限公司 一种椅子

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7721954U1 (de) * 1977-07-13 1977-10-13 Wilkhahn Wilkening + Hahne, 3252 Bad Muender Sitzmöbel, insbesondere Stuhl
DE3322450A1 (de) * 1983-06-22 1985-01-10 August Fröscher GmbH & Co KG, 7141 Steinheim Vorrichtung zum verstellen des sitzes und der rueckenlehne von stuehlen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2045120A5 (fr) * 1969-06-03 1971-02-26 Dupart Jean
US4143910A (en) * 1977-09-12 1979-03-13 Klaus Geffers Chair having synchronously coupled tiltable seat and back rest
DE7815561U1 (fr) * 1978-05-24 1978-09-14 Martin Stoll Giroflex Gmbh, 7897 Tiengen
US4380352A (en) * 1979-06-11 1983-04-19 Knoll International, Inc. Reclining chair
CH645795A5 (en) * 1979-07-23 1984-10-31 Drabert Soehne Chair, in particular visual display unit chair
US4390206A (en) * 1980-05-01 1983-06-28 Steelcase, Incorporated Synchrotilt chair control
NL8103037A (nl) * 1981-06-23 1983-01-17 Gispen & Staalmeubel Bv Stoel.
CH659179A5 (en) * 1983-05-06 1987-01-15 Provenda Marketing Ag Working chair, especially an office chair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7721954U1 (de) * 1977-07-13 1977-10-13 Wilkhahn Wilkening + Hahne, 3252 Bad Muender Sitzmöbel, insbesondere Stuhl
DE3322450A1 (de) * 1983-06-22 1985-01-10 August Fröscher GmbH & Co KG, 7141 Steinheim Vorrichtung zum verstellen des sitzes und der rueckenlehne von stuehlen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261723A (en) * 1987-12-28 1993-11-16 Isao Hosoe Ergonomic chair having the seat at a varying position
EP0368002A1 (fr) * 1988-11-07 1990-05-16 Wilhelm Link GmbH & Co. KG Stahlrohrmöbel Chaise, notamment chaise de bureau
DE4235691A1 (de) * 1991-10-22 1993-06-03 Itoki Crebio Corp Kippsteueranordnung fuer einen stuhl
US5348372A (en) * 1991-10-22 1994-09-20 Itoki Crebio Corporation Tilting control assembly for chair
DE4235691C2 (de) * 1991-10-22 1999-03-18 Itoki Crebio Corp Kippsteueranordnung für einen Stuhl
CN104605648A (zh) * 2015-01-29 2015-05-13 安吉富和家具有限公司 一种靠背坐垫同步异角度底盘
CN104605648B (zh) * 2015-01-29 2017-02-22 安吉富和家具有限公司 一种靠背坐垫同步异角度底盘

Also Published As

Publication number Publication date
AU5855286A (en) 1986-12-18
JPH0734772B2 (ja) 1995-04-19
US4695093A (en) 1987-09-22
DE3666330D1 (en) 1989-11-23
DE3521488A1 (de) 1986-12-18
EP0205097A3 (en) 1987-09-02
ZA864324B (en) 1987-02-25
JPS6257519A (ja) 1987-03-13
ATE47289T1 (de) 1989-11-15
EP0205097B1 (fr) 1989-10-18

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