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EP0248418A2 - Siège fonctionnel - Google Patents

Siège fonctionnel Download PDF

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Publication number
EP0248418A2
EP0248418A2 EP87108041A EP87108041A EP0248418A2 EP 0248418 A2 EP0248418 A2 EP 0248418A2 EP 87108041 A EP87108041 A EP 87108041A EP 87108041 A EP87108041 A EP 87108041A EP 0248418 A2 EP0248418 A2 EP 0248418A2
Authority
EP
European Patent Office
Prior art keywords
lever
backrest
seat surface
seating furniture
seat
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
EP87108041A
Other languages
German (de)
English (en)
Other versions
EP0248418B1 (fr
EP0248418A3 (en
Inventor
Hartmut S. Engel
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.)
ENGEL, HARTMUT S.
Roeder Sitzmoebelwerke GmbH
Original Assignee
Roeder Sitzmoebelwerke GmbH
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
Priority claimed from DE3618705A external-priority patent/DE3618705C2/de
Application filed by Roeder Sitzmoebelwerke GmbH filed Critical Roeder Sitzmoebelwerke GmbH
Priority to AT87108041T priority Critical patent/ATE51501T1/de
Publication of EP0248418A2 publication Critical patent/EP0248418A2/fr
Publication of EP0248418A3 publication Critical patent/EP0248418A3/de
Application granted granted Critical
Publication of EP0248418B1 publication Critical patent/EP0248418B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means, for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means, for adapting chairs, beds or mattresses to the shape or weight of persons for 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
    • A47C1/03255—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
    • 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
    • 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
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
    • 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
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
    • A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
    • 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
    • A47C1/033—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest the coupling member being a flexible strip

Definitions

  • the invention relates to functional seating furniture, in particular for workplaces in the office area, comprising a frame, a seat which can be pivoted about a horizontal frame axis, the inclination of the seat surface being adjustable against the force of at least one spring, and a backrest which can be pivoted as a function of the respective seat surface inclination.
  • Functional seating of this type is required to provide the user with a balanced posture to relieve the muscles, to reduce the pressure on the intervertebral discs and to avoid congestion in the legs and in the pelvic area, and at the same time such a work seat must also ensure the activity of the respective person Support user, ie promote active posture.
  • the object of the invention is to provide functional seating furniture of the type specified at the outset, which on the one hand ensures an optimally combined seat and backrest inclination adjustment and on the other hand the required movements of the seat and backrest by means of an extremely compact and in a particularly economical manner manufacturing supporting and adjusting mechanism realized.
  • This object is essentially achieved in that the front part of the seat surface, in particular in the side area, is supported in each case on one arm of a two-armed lever which is pivotably mounted on the frame, the other arm of which is pivoted with a lever corresponding to the seat inclination Handlebar is engaged and thereby causes a lowering of the front edge of the seat surface when increasing the seat inclination.
  • kinematic elements located laterally of the seat and backrest obtains an optimal relative movement course of the seat and backrest depending on the position desired by the user, the increase in the angle between the seat surface and the backrest is connected to a lowering of the front edge of the seat. Due to the articulation of the front edge of the seat surface on the two-armed lever, the seat surface moves slightly forward during this lowering movement, and this forward movement of the seat surface is used to change or increase the opening angle between the seat surface and the backrest.
  • the lever arm of a further two-armed lever connected to the backrest is designed as an armrest support, a desired increase in the distance between the seat surface and the armrest also results in the relaxed position.
  • the second two-armed lever as an armrest support or as an armrest is advantageous from an economical, constructive and design point of view, but is not a mandatory requirement since the arm of this two-armed pivoting lever located on the backrest between the frame-fixed pivot axis and the pivoting joint Shape and course none: subject to constraints, but only has to be rigid in itself.
  • a preferably provided transmission design leads to an extremely compact arrangement and enables the Ki Attach nematic elements to the side of the seat, which allows a transparent seat design or is a prerequisite for this.
  • the gear ratio can be specified without any problems, which means, for example, that the ratio of seat inclination to backrest inclination is 1: 2 and can easily be modified up to 1: 3.
  • the gear unit can be designed as a compact unit containing all the movement-relevant elements, which follow the course of the seat and backrest in an angled form or can be used as an armrest unit.
  • the axle fixed to the frame preferably consists of a guide tube in which a torsion bar, in particular in the middle, is arranged , the ends of which are positively and non-positively connected to the arms extending to the backrest and pivotably mounted on the ends of the guide tube.
  • a preferred development of the functional seating furniture according to the invention is characterized in that the backrest is divided into a base part pivotably connected to the second two-armed lever and a support part which is articulated on a carrier lever and via an adjusting mechanism pivoting the carrier lever between an approximately the inclination of the base part and a position spaced from the base part and displaced toward the front edge of the seat is adjustable.
  • This embodiment makes it possible to achieve effective support for the lumbar region and the spine even when the user of the functional seating furniture is only sitting on the front area of the seat surface, particularly in a typewriter position. It is also possible to accommodate the entire adjusting mechanism in an extremely space-saving manner and from a design point of view in no way disturbing within the outline of the functional elements.
  • a height adjustment of the backrest can be reached without any problems.
  • FIG. 1 shows, in an indicated form, a part of a frame 1, which can in principle be implemented in any manner, and which has a seat or a seat surface 2 and a backrest 3 carries.
  • Seat 2 and backrest 3 can consist of separate, articulated parts, but also of a one-piece, expandable shell part.
  • the seat surface 2 is supported on links 5 or connected to these links 5 extending on both sides of the seat surface, which are pivotable about a horizontal frame axis 4 and are prestressed into a basic position by means of spring force.
  • a return spring 9 which serves to reset the seat, is mounted between the frame and an articulation point of the handlebar 5, the handlebar and the spring longitudinal axis forming an acute angle with one another.
  • this return spring 9 preferably represents a support spring for the main return spring, which is formed by a torsion bar which is held centrally in a tube forming the horizontal frame axis 4 and is connected at its ends to the links 5 provided on both sides.
  • a substantially non-stretchable band 8 is provided, which is attached to the periphery of a frame-fixed disc 12, which is concentric to the horizontal frame axis 4.
  • This band 8 runs approximately according to the seat surface 2 to a guide roller 5 mounted on the handlebar 5, which in the region of the transition from the Seat 2 is located to the backrest 3.
  • the belt 8 is guided to a shaft 13, which is also rotatably mounted in the angled handlebar, with the circumference or the circumference of a disk firmly connected to this shaft 13, the belt being firmly connected.
  • a support 14 for the backrest 3 is in turn firmly connected to this shaft 13.
  • the shaft 13 is prestressed by means of a torsion spring or by means of a tension spring 11 in a direction pulling on the band 8.
  • the ratio of seat inclination to backrest inclination can be adjusted in the desired manner by appropriate selection of the articulation points of the band 8.
  • backrest 3 can also be pivoted backwards against the force of the tension spring 11, regardless of the backrest inclination predetermined by the seat inclination.
  • This separate pivotability of the backrest 3 is also given when different, preferably selectable positions, e.g. can be fixed by means of a pin lock.
  • the arrangement for lowering the front edge of the seat surface 2 as a function of the seat surface is of particular importance inclination.
  • the front edge of the seat surface 2 is supported by a cam or two-armed lever 15 mounted on the frame, the respective position and thus the height adjustment being dependent on the inclination of the handlebar 5 or the seat surface 2 connected to this handlebar 5.
  • the two-armed handlebar 15 is, for example, in engagement with the end of the handlebar 5, which has the consequence that an inclined position of the handlebar 5 in the sense of a lowering of the rear part of the seat surface 2 to an opposite pivoting of the two-armed lever 15 and thus also leads to a lowering of the front edge of the seat ' 2.
  • This coupled movement gives the user of the seating furniture the impression of a pivot axis of the seating surface located in front of the seating surface and in particular in the area of the hollow of the knees.
  • the lowering of the front area of the seat also has a positive effect with regard to a more even distribution of loads in the reclining positions.
  • This principle of lowering the front area of the seat can also be implemented independently of the special design of the gear unit in the case of structurally different seating furniture solutions. It is always important that the elements causing the lowering can be arranged to the side of the seat, so that they take up little space and, by choosing: the corresponding lever ratios, enable the course of the desired lowering movement to be realized.
  • the front area of a seat surface mounted in the manner of a cantilever chair can have a seat fitting part on which one end of a short intermediate lever can be pivoted is articulated, which is designed as a two-armed lever and cooperates with its other end with a support arm for the seat surface in such a way that the support height of the front region of the seat surface is changed depending on its inclination.
  • Fig. 2 shows the embodiment shown in Fig. 1 in a more concrete representation.
  • the handlebar 5 supporting the seat surface 2 is angled and roughly follows the contour of the seat surface and backrest.
  • the two sections of the angled handlebar 5 form an obtuse angle with one another.
  • the longer leg is pivotally connected to the horizontal frame axis in the front seating area.
  • a shaft 13 is mounted, with which a support member 14 for the backrest 3 is firmly connected. Swiveling the shaft 13 leads to a corresponding change in the inclination setting of the backrest 3.
  • An annular disc 12 is provided concentrically to the frame axis 4, on the outer circumference of which the band 8 is fastened.
  • This band 8 runs within the angled link 5 to a deflection disc 10 located in the corner region of this link and from there to the shaft 13, to which the band 8 is in turn firmly connected.
  • a tension spring 11 is preferably arranged in a recess of the upwardly directed part of the link 5, which is attached at one end to the link 5 and at the other end to the circumference of the shaft 13 in such a way that it pivots the shaft 13 in Ge would like to effect counterclockwise and thus also tension the band 8.
  • This tension spring 11 can also serve as a support spring for a torsion spring provided in the shaft 13 itself.
  • a tension spring is also accommodated, which serves as a return spring and is mounted fixed to the frame above the pivot axis 4 and thus exerts a counterclockwise torque on the handlebar 5.
  • This spring can also be a support spring for a torsion bar, which runs according to the joint axis and is connected to the links 5 provided on both sides of the seat.
  • the lever 15 which serves to lower the front region of the seat surface 2 is in engagement with an element which can be pivoted together with the handlebar 5, and this lever 15 causes the support point for the front region of the seat surface 2 to be lowered when the lever 5 is pivoted clockwise entry.
  • the extent of the lowering of the front area of the seat surface can be predetermined in the desired manner by the choice of the translation of the movement.
  • Fig. 2 shows the chair in a so-called action-active position, in which the seat 2 extends approximately horizontally and the backrest 3 is pivoted strongly forward.
  • the opening angle between the seat and backrest is less than 90 °.
  • the backrest 3 can be pivoted independently about the shaft 13 when a corresponding pressure is exerted.
  • the gear units arranged on both sides of the seat surface always adapt to the course of the seat surface and backrest and thus the technical functional elements in the concrete design of the armchair largely take a back seat.
  • FIG. 3 shows an advantageous embodiment detail of the functional seating furniture according to FIG. 2.
  • the special feature of this embodiment variant is that the deflection element 10 is designed as an eccentric element.
  • the non-stretchable band 8 is guided around this eccentric organ: the deflecting member 10 has a reduced part on its circumference. diameter.
  • the area of the reduced diameter is preferably designed as a flattened portion 21.
  • the deflection element 10 can be rotated by means of a selector lever.
  • FIG. 3 shows the seating furniture in a position to be called an action-active position, in which the backrest is pivoted strongly forward.
  • the deflecting member 10 has been pivoted in such a way that the band 8 rests on the flattened part 21 and thus has a smaller distance with respect to the axis of rotation of the deflecting member 10.
  • This has the consequence that the backrest can be pivoted forwards due to the action of the spring 11 and possibly a torsion spring running in accordance with the backrest joint.
  • a plurality of setting levels can also be provided in order to allow the user to adapt as individually as possible.
  • Fig. 4 shows a functional seating furniture according to the invention with a frame 1 carried by a column 17 with associated roller star 18 for a seat 2 and a backrest 3.
  • a first two-armed lever 15 is mounted in its front region on a frame 1 which runs at an obtuse angle with respect to the column 17 via a pivot axis 4.
  • This first two-armed lever 15 is connected to the seat surface 2 via a swivel joint 20, specifically in the area of the front
  • the other arm of this first two-armed lever 15 is coupled to an arm of a second two-armed lever 7, in particular via a coupling axis 6 designed as a pin-slot connection.
  • This second two-armed lever 7 is also pivotably mounted on the frame 1, specifically in accordance with the main pivot axis 22, which is preferably designed as a torsion bar spring axis and prestresses the seat surface 2 and backrest 3 into the basic position.
  • the second two-armed lever 7 comprises, in addition to the short lever arm already mentioned, which is coupled to the first two-armed lever 15, a comparatively long lever arm which is pivotably articulated on the backrest 3 in a bearing 9.
  • This lever arm is preferably designed as an angle lever and runs according to the armrest of the seating furniture.
  • the two two-armed levers 7, 15 control the kinematics of the seating furniture, the movement possibilities.
  • the seat surface 2 and the backrest 3 are indicated by arrows and the distance between the seat surface and the armrest is indicated by the letter A. ;
  • F ig. 5 shows the seating furniture according to FIG. 4 in the so-called relax position, ie in the position in which the seat surface 2 is strongest most lowered and the backrest 3 is pivoted back as far as possible.
  • the position of the seat, backrest and armrest changed by the kinematics used is possible by comparison with the basic position indicated by dash-dotted lines.
  • the seat 2 has been lowered both in the front and in the rear area by the process of leaning back the user of the seating furniture, the extent of the reduction being identified by the number "1".
  • the lowering process of the seat surface 2 is triggered by pivoting the second two-armed lever 7 clockwise, the first two-armed lever 15 being pivoted counterclockwise, thereby lowering the front edge of the seat surface 2 on the one hand and, on the other hand, taking this seat surface 2 forward due to the articulation.
  • This forward component in the movement of the seat surface 2 in turn has the result that the opening angle between the seat surface 2 and the backrest 3 is increased due to the rigid connection between the pivot bearings 22 and 23, namely - as indicated by the number "2" - in proportion 1: 2.
  • This relative movement between the seat surface 2 and the backrest 3 also increases the distance between the seat surface 2 and the armrest, in a desired manner by a few centimeters. This is indicated by the indication A + in Fig. 2.
  • the seat surface 2 behaves during the transition from the basic position to its inclined position as if it were moved about an ideal pivot axis 25.
  • FIG. 6 shows an embodiment variant of the seating furniture according to FIGS. 4 and 5, in which an additional adjustment of the backrest in the direction of the front edge of the seat is possible.
  • the basic kinematics, consisting of the two two-armed levers 7, 15, is unchanged, but the division of the backrest into a base part 3 and a support part 3 'is essential.
  • the base part 3 is in turn movable with the seat surface 2, in particular connected via a swivel joint 24, while the support part 3 'in this case represents the actual backrest assigned to the user.
  • This support part 3 ' is pivotally mounted on a support lever 26 via a joint 27, the articulation point being located in the upper region of the backrest.
  • the carrier lever 26 is fixedly connected to a swivel axis or swivel roller 28 which is mounted on the base part 3. This bearing also forms the articulation point for the second two-armed lever 7.
  • the adjustment of the support part 3 takes place via an adjusting mechanism which consists of a band 29 which partially encompasses the swivel roller 28 and which is non-positively coupled to it and which is tensioned by a tension spring 30 and is guided to the pivot axis 22 via a deflection roller acting as an actuator 31 and is fastened there.
  • the support part 3 is held in the rearmost position, specifically via the band 29 against the action of the spring 30.
  • This position of the chair can be referred to as a decision-making position.
  • Fig. 7 shows that the control member 31 has been adjusted in comparison to its position in Fig. 6 downwards, which is synonymous with an extension of the band 2 9 with respect to the spring 30, ie that the tensioned spring 30 is shortened and thereby the carrier lever 26 has pivoted counterclockwise.
  • This pivoting of the support lever 26 corresponds to a displacement of the support part 3 'in the direction of the front edge of the seat.
  • This enables optimal back support when changing postures and in particular also when the user of the chair only sits on the front area of the seat 2, as is the case with typewriter work. This ensures effective support of the lumbar area and spine even in this critical sitting position.
  • the support part 3 makes slight movements forwards and backwards, for which purpose a spring restoring force can be introduced for the basic position.
  • Fig. 8 shows the transition of the seating furniture according to FIGS. 6 and 7 into the relax position, in which the seat surface 2 is lowered and the support lever 26 is controlled by the control of the band 29 already explained when the seat surface 2 is lowered, so that without additional switching , ie a comfortable relaxing position is automatically reached. This is a consequence of the eccentric articulation of the band 29 on the pivot axis 22 .
  • FIG. 9 shows a variant of the seating furniture according to FIGS. 6 to 8, the support lever 26 moving away from the swivel roller 28 extends downward and is connected to the end region of the backrest support part 3 ′ on the seat surface by means of a pivoting lever 32 which is controlled by a band adjusting mechanism.
  • the band adjusting mechanism is in turn formed by a steel band 29, which is fastened off-center to the swivel axis 22, is guided via an adjustable member 31 to the swivel roller 28 on the backrest and is guided by this to a tension spring 30 via a roller which is firmly connected to the swivel lever 32.
  • the support lever for the supporting part 3 ' accordingly extends downward and is moved substantially parallel to the front to the front edge of the seat and back when the support lever 26 is pivoted when the support lever 26 is pivoted.
  • a vertical double arrow also indicates in FIG. 9 that the chair can be provided with a conventional height adjustment.
  • the seat surface 2 When transitioning to the relax position shown in FIG. 11, in the same way as already described in connection with FIG. 8, the seat surface 2 is lowered while the support part 3 'is simultaneously returned to the rear position.
  • the movements resulting from the double-lever kinematics advantageously overlap with the movements caused by the band adjusting mechanism in such a way that optimal positions result without actuation of the actuator 31.
  • the frame 12 shows a functional chair designed as a cantilever chair, the seat 2 and backrest 3 of which are carried by a frame 1, the column 17 of which is connected to a roller star 18.
  • the frame can be configured in any manner.
  • Seat 2 and backrest 3 can be pivoted relative to one another and can be connected to one another via a joint 24.
  • the latter is connected in an articulated manner to a lowering lever 15 which is pivotably mounted on an axis fixed to the frame.
  • a carrier link 33 which extends between this axis fixed to the frame and the backrest 3, to which it is articulated in a pivot bearing 23, can also be pivoted relative to this axis fixed to the frame.
  • This handlebar 33 can also be designed as an armrest at the same time.
  • a centrally fixed torsion bar 34 runs coaxially with the axis fixed to the frame, with the ends of which the links 33 provided on both sides of the seat are firmly connected.
  • the inclination adjustment of seat 2 and backrest 3. accordingly follows against the restoring force of this torsion bar spring 34.
  • Fig. 13 shows the transition from that shown in Fig. 12 Starting position in the approximately half-lowered position.
  • the angle between the seat surface 2 and the backrest 3 is increased and, on the other hand, the seat surface 2 is lowered in the area of its front edge.
  • pivoting the handlebar 33 in the clockwise direction results in the pivoting of the lowering lever 15 via an intermediate gear in the counterclockwise direction, thereby moving the seat surface 2 - as indicated by the double arrow - forwards and not only downwards.
  • F ig. 14 shows the seating furniture with the seat surface 2 completely lowered, the original starting position also being indicated by dashed lines. In this position, the lowering lever 15 is almost horizontal and the opening angle between the seat surface 2 and the backrest 3 takes its maximum value.
  • the axle fixed to the frame is designed as a tube 36 through which the torsion spring 34 extends, which ends are connected in a rotationally fixed manner to a bearing head part 19 which is a component of the link 33.
  • a support sleeve 16 is rotatably mounted at a distance from the bearing head part 19, which is fixedly connected to the lowering lever 15, or is formed in one piece.
  • blind hole bores 37 which are substantially opposite one another are provided in the basic seating position. These blind holes 37 are each on a circle coaxial to the tube 36.
  • an annular disk-shaped deflection element 38 is provided on the tube 36, which is firmly connected to the tube 36 and thus to the frame.
  • this deflection member 38 has openings 13, the diameter of which is larger than the diameter of the blind holes.
  • the openings 39 are preferably double V-shaped in cross section, so that the rods 40 are guided at the centrally located point of the smallest cross section and can nevertheless carry out the required deflection movements unimpeded.
  • the rods 40 which extend through the openings 39 are preferably spring steel rods which engage with their ends in the blind holes 37 of the carrier sleeve 16 and the bearing head part 19. In the basic position of the seating, i.e. When the seat surface is not lowered, the rods 40 preferably rest against the bottom of the blind holes 37, as a result of which a stop or pressure point is obtained.
  • the handlebar 33 and lowering lever 15 are pivoted in opposite directions, as shown in FIG. 16, since the rods 40 pivot when the handlebar 33 is pivoted clockwise pivot the lowering lever counterclockwise through the frame-fixed deflector 38.
  • the transmission ratio can be influenced by appropriate positioning of the deflection member 38.
  • the axis fixed to the frame is formed by a tube 41 which engages over the support sleeve 16 and the bearing head part 19 and is fixedly connected to the ring-shaped deflection element 38. In this case, there is no connection between the tube 36 and the deflection member 38.
  • the tube 36 is used only for rigid coupling of the links 33 provided on both sides of the seat.
  • a preferably multi-armed, for example parallelogram-shaped lever 44 is articulated on a column 17 and is under the pretension of a spring 42 and supports the seat surface 2 via the horizontal frame axis.
  • a non-stretchable band 45 is fastened to the periphery of disk or roller members 43.
  • the lower disc member 43 is fixed to the frame, while the upper disc. organ is connected to the torsion spring running according to the frame axis.
  • Both two-armed levers 7, 15 are designed as angled levers and connected to each other via a pin-slot coupling.
  • the articulation of the first two-armed lever 15 on the seat 2 can take place in the manner shown or directly and directly on the side of the front edge of the seat surface.
  • the two arms of each of the two armed lever 7, 15 close to each other, preferably an angle in the range of 120 ° to 150 0th
  • a special feature of the chassis of functional seating furniture designed in particular according to the invention is that each roller is assigned a circumferential support edge 46, with the same circumferential diameter of the chassis. As a result, significantly improved tipping safety can be achieved regardless of the respective chair roller position, and the surrounding support edge can also take on the task of a soft, furniture-protecting bumper.
  • the entire chair is preferably designed to be dismantled for dispatch in order to achieve the lowest possible dispatch volume.
  • the interfaces are at the points chassis / column, column / frame handlebar and frame / seat shell, and they are designed so that they can be easily connected and connected in a few simple steps, for which purpose bayonet or screw connections are provided.
  • this interface solution enables the construction of chairs according to the modular principle, since different chairs can be put together from different individual elements, which results in a lower capital commitment compared to the storage of completely assembled chairs.

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  • 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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyridine Compounds (AREA)
EP87108041A 1986-06-04 1987-06-03 Siège fonctionnel Expired - Lifetime EP0248418B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87108041T ATE51501T1 (de) 1986-06-04 1987-06-03 Funktions-sitzmoebel.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3618705A DE3618705C2 (de) 1986-06-04 1986-06-04 Funktions-Sitzmöbel
DE3618705 1986-06-04
DE3632131 1986-09-22
DE3632131A DE3632131C2 (de) 1986-06-04 1986-09-22 Funktions-Sitzmöbel
DE3704083A DE3704083C2 (de) 1986-06-04 1987-02-10 Funktions-Sitzmöbel
DE3704083 1987-02-10

Publications (3)

Publication Number Publication Date
EP0248418A2 true EP0248418A2 (fr) 1987-12-09
EP0248418A3 EP0248418A3 (en) 1988-04-20
EP0248418B1 EP0248418B1 (fr) 1990-04-04

Family

ID=27194458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108041A Expired - Lifetime EP0248418B1 (fr) 1986-06-04 1987-06-03 Siège fonctionnel

Country Status (8)

Country Link
US (1) US4988145A (fr)
EP (1) EP0248418B1 (fr)
JP (1) JPH0793898B2 (fr)
CA (1) CA1289051C (fr)
DE (3) DE3632131C2 (fr)
DK (1) DK283387A (fr)
ES (1) ES2014010B3 (fr)
NO (1) NO872325L (fr)

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FR2627968A1 (fr) * 1988-03-07 1989-09-08 Eurosit Siege articule
EP0332088A1 (fr) * 1988-03-10 1989-09-13 R O E D E R Gmbh Chaise, notamment chaise de travail et chaise de bureau
US5992934A (en) * 1995-11-29 1999-11-30 Sirona Dental Systems Gmbh & Co. Kg Device for adjusting the forcibly coupled seat and back of a dentist chair
EP0834271A3 (fr) * 1996-10-01 2000-01-26 Sedus Stoll AG Meuble d'assise avec siège et dossier basculants

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DE3800756A1 (de) * 1987-06-24 1989-01-05 Horst Sondergeld Sitz fuer einen buerostuhl od. dgl.
DE3844102A1 (de) * 1988-12-28 1990-07-05 Sondergeld Horst Dipl Designer Sitz fuer einen buerostuhl od. dgl.
DE3817761A1 (de) * 1988-05-19 1989-11-30 Roeder Gmbh Stuhl, insbesondere arbeits- oder buerostuhl
US5106157A (en) * 1989-03-01 1992-04-21 Herman Miller, Inc. Chair height and tilt adjustment mechanisms
DE3914832A1 (de) * 1989-05-05 1990-11-08 Link Wilhelm Kg Stuhl, insbesondere buerostuhl
FR2654683B1 (fr) * 1989-11-22 1992-03-13 Faure Bertrand Automobile Perfectionnements aux sieges avant des vehicules automobiles.
AU640441B2 (en) * 1989-12-29 1993-08-26 Wilkhahn Wilkening & Hahne Gmbh & Co. Synchronous adjusting device for office chairs or the like
KR100334316B1 (ko) 1992-06-15 2002-10-11 헤르만밀러인코퍼레이티드 사무용의자의지지장치및제조방법
US5630643A (en) 1993-06-01 1997-05-20 Steelcase Inc Upholstered chair with two-piece shell
DE4409098A1 (de) * 1994-03-17 1995-09-21 Froescher Gmbh & Co Kg Stuhl mit Neigungsmechanik
US5577807A (en) 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
DE4428552C1 (de) * 1994-08-12 1996-02-22 Simon Desanta Armlehnenstuhl
GB9500022D0 (en) * 1995-01-04 1995-03-01 Unwalla Jamshed Integrated seat and back and mechanism for chairs
US5573303A (en) * 1995-05-16 1996-11-12 Doerner Products Ltd. Chair seat tilting mechanism
FR2749812A1 (fr) * 1996-06-17 1997-12-19 Faure Bertrand Equipements Sa Siege avant de vehicule automobile avec appui-tete asservi
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
DE29903045U1 (de) 1999-02-19 1999-05-06 Bräutigam, Erhard, 96215 Lichtenfels Stuhl mit in der Höhe verstellbarem Sitz
US6709058B1 (en) 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
WO2001064080A1 (fr) * 2000-02-29 2001-09-07 Takano Co., Ltd. Dispositif de verrouillage d'une chaise
USD446397S1 (en) 2000-09-28 2001-08-14 Formway Furniture Limited Chair
USD448277S1 (en) 2000-09-28 2001-09-25 Formway Furniture Limited Castor
USD448219S1 (en) 2000-09-28 2001-09-25 Formway Furniture Limited Castored base for a chair
USD463144S1 (en) 2000-09-28 2002-09-24 Formway Furniture Limited Chair
USD460300S1 (en) 2000-09-28 2002-07-16 Formway Furniture Limited Slotted seat panel for a chair
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
USD445580S1 (en) 2000-09-28 2001-07-31 Formway Furniture Limited Chair
AUPR054400A0 (en) 2000-09-29 2000-10-26 Formway Furniture Limited A castor
MY126880A (en) * 2000-10-16 2006-10-31 Kokuyo Kk Chair
DE10109624C1 (de) * 2001-02-28 2002-09-12 Interstuhl Bueromoebel Gmbh Stuhl, insbesondere Bürostuhl
US6644741B2 (en) 2001-09-20 2003-11-11 Haworth, Inc. Chair
US20050046258A1 (en) * 2003-07-09 2005-03-03 Sanchez Gary L. Task chair
US7040703B2 (en) * 2002-03-29 2006-05-09 Garrex Llc Health chair a dynamically balanced task chair
US7396082B2 (en) 2002-03-29 2008-07-08 Garrex Llc Task chair
US7625046B2 (en) * 2002-03-29 2009-12-01 Garrex Llc Task chair
NZ518944A (en) * 2002-05-14 2004-09-24 Formway Furniture Ltd Height adjustable arm for chair with outer stem releasably lockable to inner stem by engagement of recesses
JP4137536B2 (ja) * 2002-07-03 2008-08-20 コクヨ株式会社 椅子
US6880886B2 (en) * 2002-09-12 2005-04-19 Steelcase Development Corporation Combined tension and back stop function for seating unit
US6945602B2 (en) * 2003-12-18 2005-09-20 Haworth, Inc. Tilt control mechanism for chair
US7172539B1 (en) * 2004-01-02 2007-02-06 Alice Bythewood Abdominal exercising support apparatus
BRPI0510989B1 (pt) * 2004-05-13 2017-11-21 Humanscale Corporation Chair, membrane chair component, membrane chair seat, membrane cover, method of molding a membrane chair component, and office chair
USD623449S1 (en) 2005-05-13 2010-09-14 Humanscale Corporation Mesh backrest for a chair
AR057387A1 (es) * 2005-06-20 2007-12-05 Humanscale Corp Aparato de asiento con movimiento reclinable
CA2645964C (fr) * 2006-03-24 2014-05-06 Herman Miller, Inc. Agencement de siege
GB0609315D0 (en) * 2006-05-11 2006-06-21 Technicon Internat Man Service Improved seat
CN101522073A (zh) * 2006-08-30 2009-09-02 伊藤喜有限公司 椅子
DE202006015734U1 (de) * 2006-10-13 2006-12-14 Ferdinand Lusch Gmbh & Co. Kg Liegesessel
JP2008136627A (ja) * 2006-11-30 2008-06-19 Kokuyo Co Ltd 家具
DE102007001194A1 (de) * 2007-01-05 2008-07-10 Omp S.R.L Bewegungsgekoppelte Servoeinrichutng für ein Sitzteil, insbesondere eines Stuhls
KR101539468B1 (ko) 2007-01-29 2015-07-24 허만 밀러 인코포레이티드 시팅 구조물 및 상기 시팅 구조물의 사용 방법
US8251448B2 (en) * 2007-03-13 2012-08-28 Hni Technologies Inc. Dynamic chair back lumbar support system
US7942485B2 (en) * 2007-05-15 2011-05-17 Kathi Castelluccio Deployable workstation
DE102008011309B3 (de) * 2008-02-27 2009-06-04 Thonet Gmbh Bürostuhl
JP4379538B1 (ja) * 2008-10-07 2009-12-09 沖電気工業株式会社 椅子用リンク機構、椅子
CN201602410U (zh) * 2010-02-04 2010-10-13 周金坤 一种办公休闲两用椅
US9284729B2 (en) 2010-05-05 2016-03-15 Allsteel Inc. Modular wall system
USD659417S1 (en) 2010-06-04 2012-05-15 Herman Miller, Inc. Chair and components thereof
US8556345B2 (en) * 2011-03-14 2013-10-15 Sheng Jia Sheng Co., Ltd. Chair having angle and tension adjusting functions
DE102011001811A1 (de) * 2011-04-05 2012-10-11 Wilkhahn Wilkening + Hahne Gmbh + Co. Kg Stuhl
US9504326B1 (en) * 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US9833075B2 (en) * 2012-09-05 2017-12-05 Godrej & Boyce Mfg Co Ltd Chair with adjustable backrest and seat
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
US9706845B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
WO2014144143A1 (fr) 2013-03-15 2014-09-18 Hni Technologies Inc. Chaise ayant une flexion arrière activée
EP3005905B1 (fr) * 2013-06-07 2018-10-31 Okamura Corporation Chaise
DE202014100062U1 (de) * 2014-01-08 2015-04-10 Innotec Motion GmbH Sitzmöbel mit federnder Rückenlehne
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627968A1 (fr) * 1988-03-07 1989-09-08 Eurosit Siege articule
EP0332088A1 (fr) * 1988-03-10 1989-09-13 R O E D E R Gmbh Chaise, notamment chaise de travail et chaise de bureau
US5992934A (en) * 1995-11-29 1999-11-30 Sirona Dental Systems Gmbh & Co. Kg Device for adjusting the forcibly coupled seat and back of a dentist chair
WO1997019666A3 (fr) * 1995-11-29 2001-09-13 Siemens Ag Dispositif de reglage du siege et du dossier a accouplement force d'un fauteuil de dentiste
EP0834271A3 (fr) * 1996-10-01 2000-01-26 Sedus Stoll AG Meuble d'assise avec siège et dossier basculants

Also Published As

Publication number Publication date
ES2014010B3 (es) 1990-06-16
NO872325D0 (no) 1987-06-03
DE3704083A1 (de) 1988-08-18
DE3632131C2 (de) 2001-12-13
CA1289051C (fr) 1991-09-17
US4988145A (en) 1991-01-29
JPH0793898B2 (ja) 1995-10-11
NO872325L (no) 1987-12-07
DK283387D0 (da) 1987-06-03
EP0248418B1 (fr) 1990-04-04
DK283387A (da) 1987-12-05
JPS63109818A (ja) 1988-05-14
DE3632131A1 (de) 1988-03-31
DE3704083C2 (de) 2002-09-05
EP0248418A3 (en) 1988-04-20
DE3762082D1 (de) 1990-05-10

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