EP0884964A1 - Siege, notamment siege de bureau - Google Patents

Siege, notamment siege de bureau

Info

Publication number
EP0884964A1
EP0884964A1 EP97941778A EP97941778A EP0884964A1 EP 0884964 A1 EP0884964 A1 EP 0884964A1 EP 97941778 A EP97941778 A EP 97941778A EP 97941778 A EP97941778 A EP 97941778A EP 0884964 A1 EP0884964 A1 EP 0884964A1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
backrest support
seat
chair according
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
EP97941778A
Other languages
German (de)
English (en)
Other versions
EP0884964B1 (fr
Inventor
Wolfgang Emmenegger
Anton Erne
Jörg HUBER
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.)
ANTON ERNE
JOERG HUBER
WOLFGANG EMMENEGGER
Stoll Giroflex AG
Original Assignee
Giroflex Entwicklungs AG
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 Giroflex Entwicklungs AG filed Critical Giroflex Entwicklungs AG
Publication of EP0884964A1 publication Critical patent/EP0884964A1/fr
Application granted granted Critical
Publication of EP0884964B1 publication Critical patent/EP0884964B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A47C1/03261—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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—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 means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03277—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

Definitions

  • the invention relates to a chair, in particular to an office chair which is adjustable in height and inclination, with a supporting body mounted on a column, a knee side arranged thereon and designed in the form of a swivel axis oriented transversely to the seat direction, and counter to the first joint point the restoring force of at least one spring element pivotable seat support and a backrest support which is operatively connected to it via a second articulation point and which is coupled therewith via a third articulation point for the pivoting movement oriented in the seat direction relative to the support body.
  • an office chair of the type mentioned in which a seat support together with a backrest support is adjustable with respect to a cantilever-shaped support body, the backrest support engaging under the seat support with a horn-shaped lower section via band-shaped, at the Connection elements rolling up and down are connected to the seat support in such a way that the backward movement of the back the backrest support is lowered and the seat support is simultaneously moved forward in an additional, knee-side elongated hole and is lowered in the rear part, the movement of the seat support on a wave-shaped first raceway provided on the backrest-side part of the support body and the backrest support each independently by means of an inside arranged and approximately circular arc-shaped guide is guided on two spaced-apart bearing journals.
  • the seat support is rolled onto the undulating track on the undulating track by means of a roller arranged in the area on the backrest and, on the other hand, the backrest support with the horn-shaped section has to be largely pushed into the knee area .
  • a supporting part for a seat plate and a backrest comprising an office chair are known, in which the backrest is arranged on an approximately vertical first section of a backrest support which is provided with a
  • a second arc-shaped section provided with rollers is guided in a recess of a bearing part provided underneath the seat plate on the support part and of an arcuate design, the sliding movement occurring at the backrest inclination being pivotable about an imaginary axis lying above the seat plate and essentially corresponding to the hip joint of the user .
  • the invention has for its object to provide a space-saving and simple constructive and economical design of the functional elements for an office chair according to the genus mentioned in the preamble of claim 1, by means of which with relatively small relative movements of the individual functional elements to one another an ergonomic shear and physical movement of the backrest support, which is operatively connected to the seat support, is achieved.
  • this object is achieved in that the backrest support is pivotally mounted relative to the support body via at least one link guide arranged between the knee joint and the pedestal and oriented in the direction of the pivoting movement in the form of an approximately circular curved path, the backward in the sitting direction and again forward-oriented pivoting movement can be ascertained and released again in a plurality of arbitrarily selectable positions by means of a raster mechanism which is arranged on the support body and can be brought into engagement with the backrest support.
  • Fig.l an office chair shown in a schematic side view and as the first embodiment in the sitting and working position;
  • FIG. 2 shows the office chair according to FIG. 1 pivoted about a horizontal swivel axis and shown in a backward inclined rest position;
  • FIG. 3 shows the office chair shown schematically in plan view and on a larger scale according to FIG. 1 with the essential functional elements;
  • Fig. A shown as a first embodiment and arranged on a support body guide for the pivoting movement of the office chair according to Fig.l;
  • FIG. 5 shows a raster mechanism for the office chair according to FIG. 1, shown as the first exemplary embodiment, in the locked position;
  • FIG. 6 shows the raster mechanism shown in a freewheel position according to FIG. 5;
  • FIG. 7 shows the raster mechanism shown in a preselection position according to FIG. 5;
  • FIG. 8 shows a clamping mechanism shown as an exemplary embodiment for the horizontal pivot axis of the office chair according to Fig.l;
  • FIG. 9 shows a section of the knee-side horizontal pivot axis for the office chair according to FIG. 1, shown in plan view and on a larger scale;
  • FIG. 10 shows the section of the horizontal pivot axis shown in section along the line A-A in FIG. 9;
  • FIG. 11 shows an office chair shown in a schematic side view and as a second exemplary embodiment in the sitting and working position
  • FIG. 12 shows the office chair shown in plan view and on a larger scale according to FIG. 11 with the essential functional elements
  • FIG. 13 shows a section of the office chair, shown in section along the line BB in FIG. 11, with a section on the back Backrest support arranged in the backrest support and a grid mechanism;
  • FIG. 14 shows a section of the office chair shown in the working position according to FIG. 11, shown in section along the line C-C in FIG. 13, with the link guide arranged on the backrest support for the pivoting movement;
  • FIG. 15 shows the section pivoted about a knee-side horizontal pivot axis into an inclined position according to FIG. 14;
  • 16a shows the raster mechanism for the office chair according to FIG. 11, partially shown in section, in the locked position in the sitting and working position;
  • 16c shows the locking mechanism for the office chair according to FIG. 11 shown in the locked position in the inclined position to the rear.
  • the drawing shows a chair, in particular an office chair that is adjustable in terms of its height and inclination, which is described in detail below in connection with the functional units provided for achieving the adjusting movements and locking of the movements and to explain the interaction of the individual functional units.
  • FIGS. 1 to 3 as a first embodiment of the office chair according to the invention and designated in its entirety with 100 is shown, which in Fig.l in a schematic side view and in working position, in Fig.2 in a schematic Side view and against the effect of at least one torsion element arranged in a horizontal swivel body 40 in the backward inclined position (relax position) and in FIG. 3 is shown in a schematic plan view.
  • FIGS. 4 to 10 show the individual functional units for achieving the adjustment movement and for locking the movements mentioned.
  • the office chair 100 essentially comprises a seat 10, a pedestal 15, a support body 20 mounted thereon and the swivel body 40 mounted in the knee-side area on the support body 20 and provided with the torsion element (not shown here) Swivel body 40 has a seat support 45 and a backrest support 75 connected to it and mounted on the support body 20.
  • the backrest support 75 serves to hold a backrest, shown schematically and designated in its entirety by 90, with a cushion part 91 arranged on a support arm 92.
  • an adjustment mechanism (not shown) operatively connected push button 93. By actuating the push button 93, the cushion part 91 can be adjusted in height in the double arrow direction H relative to the seat 10.
  • the arrangement of the push button 93 on the inside of the support arm 92 between the seat 10 and the lower edge 91 • of the upholstery part 91 has the advantage that the push button 93 is easily operated by the user sitting on the office chair 100 with one hand from the left or right and with the other hand, the cushion part 91 can be adjusted in height according to the requirements.
  • the special configuration of the adjustment mechanism, which is preferably integrated in the support arm 92, is not the subject of this invention and is therefore not shown and described in more detail.
  • the seat support 45 operatively connected to the swivel body 40 is mounted on the knee side on the support body 20 by means of the swivel body 40 referred to as the first articulation point 1.
  • the seat support 45 is mounted on the backrest support 75 via a second articulation point 2 arranged near the support column 15 and in relation thereto on the backrest side.
  • the backrest support 75 has two support arms 77 and 77 * oriented in the direction of the knee-side swivel body 40, which are each mounted on the support body 20 via a third articulation point 3 arranged between the stand column 15 and the knee-side swivel body 40.
  • the knee joint 1 forms, together with the swivel body 40, a horizontal swivel axis X-X which extends largely over the entire width of the seat 10.
  • the seat designated as a whole by 10 has a seat plate 14 and an upholstery 11 fastened thereon in a manner not shown in detail.
  • the seat 10 is arranged on the seat carrier 45 by means of correspondingly spaced-apart bearing blocks 12 and 12 '.
  • the special shape and configuration of the seat plate 14 provided with the upholstery 11 is not the subject of this invention and is therefore not described in detail.
  • the stand column 15 partially shown in FIG. 1 has a standpipe 17 in which a gas pressure spring 16, shown schematically and operatively connected to an actuating mechanism 60, is arranged.
  • the ele- ments mounted on the pedestal 15 elements of the office chair 100 can be rotated in the double arrow direction Y about a vertical axis 15 'and adjusted in height in the direction of the double arrow Z by means of the gas pressure spring 16 and can be locked at any height with respect to the floor.
  • the actuating mechanism 60 which is operatively connected to the gas pressure spring 16 and is mentioned above, will be described later in connection with FIG.
  • the support body 20 shown in FIGS. 1 and 2 in a schematic view and in a top view in FIG. 3 has a head piece 25 designed for mounting the stand column 15 and provided with a bearing housing 23 (FIG. 4), two with respect to an axis of symmetry SS side walls 21 and 21 * arranged at a parallel distance from one another, which are connected to one another by a base 24 oriented from the head piece 25 in the direction of the knee-side swivel body 40.
  • the bottom 24 is provided in the region of the third articulation point 3 with a recess 24 * penetrating the bottom 24 (FIG. 3).
  • a raster mechanism 65 Arranged in the recess 24 'is a raster mechanism 65 which is fastened by means not shown, for example fastened to the one side wall 21 * of the support body 20 by a screw connection or the like.
  • a molded support bearing 30 is further provided, to which an upwardly bent end wall 26 connects.
  • the support bearing 30 serves to receive and support a tensioning mechanism 55 which is operatively connected to a tensioning wheel 58.
  • the tensioning mechanism 55 described in more detail below in connection with FIG. 8 is actuated by the tensioning wheel 58 which can be rotated about the axis 59 * in the direction of arrow Y • (FIG ).
  • the special arrangement and design of the individual articulation points 1, 2 and 3 on the individual elements ensures that, when the swivel movement is oriented in the direction of arrow P (FIG. 1), the backrest 90 by an angle and the backrest support 75 and the seat support operatively connected to it 45 and seat 10 is moved from the rest and working position (Fig.l) with an angle ⁇ 'in the inclined or lowered position (relax position) (Fig.2).
  • the special arrangement and design of the individual functional elements ensures that the angle ⁇ 'is approximately half as large as the angle ⁇ .
  • the backrest is pivoted at an angle ⁇ of approximately 24 ° and the seat support 45 with the seat 10 is lowered at an angle ⁇ of approximately 12 °. Tests have shown that this is reversed inclined position of each user still takes a comfortable and emotionally safe sitting position and also feels.
  • the office chair 100 is enlarged and shown in a schematic plan view and one recognizes the support body 20 arranged on the axis of symmetry SS and supported with the head piece 25 in a manner not shown on the support column, which in the knee-side area two at a distance from each other on the Side walls 21,21 'arranged and schematically illustrated bearings 27,27'.
  • the bearings 27, 27 * are designed to accommodate the swivel body 40 which is arranged transversely to the axis of symmetry S-S and essentially forms the swivel axis X-X. Furthermore, one can see in FIG.
  • the link guides 35, 35 'arranged on both sides of the support body 20 with respect to the axis of symmetry SS can be designed in the form of an independent component and in not shown are attached to the side walls 21,21 'of the support body 20.
  • the link guides 35, 35 * can also be designed as a recess, not shown in the respective side walls 21 and 21 ', or recesses or the like delimited by the side walls 21 and 21'.
  • the seat support 45 is arranged on the knee-side swivel body 40 and fastened by means not shown.
  • the seat bracket 45 has, for example, two longitudinal members 45 * and 45 "formed from the sections 49, 49 'and 48.48' and 47.47 ', in which the two sections 49, 49' fastened to the swivel body 40 by the obliquely in the direction of Sections 48, 48 * oriented on the axis of symmetry are connected to the sections 47, 47 * arranged at a parallel distance from the axis of symmetry SS
  • the backrest support 75 has two support arms 77 and 77 * which are arranged at a parallel distance from the axis of symmetry SS, which in the area on the backrest side by a the first intermediate piece 76 and approximately in the region of the third articulation point 3 are connected to one another by a second intermediate piece 80.
  • the second intermediate piece 80 which is designed as a grid element in accordance with the pivoting movement and is approximately circular in arc, can be brought into engagement with the grid mechanism 65 arranged on the support body 20 for different seating positions Embodiment of the grid mechanism 65 will be explained below nd described in connection with Figures 5 to 7.
  • two bearing parts which are arranged at a distance from one another and are designed as hinge pins 78, 78 'and 79, 79' are arranged and fastened in a manner not shown in any more detail.
  • the two first hinge pins 79, 79 * which form the third hinge point 3 and are arranged corresponding to one another are each with a slide piece 85 and 85 'in FIG the associated guide 35,35 'mounted.
  • the two second articulation pins 78, 78 ' which form the second articulation point 2 and which correspond to one another are connected to the seat plate 14 via the bearing blocks 12' provided on the sections 47 and 47 'of the support frame 45.
  • a cross member 13 can be arranged for storage and attachment of armrests, not shown.
  • the actuating mechanism 60 by means of which the gas pressure spring 16 arranged in the standing column 15 (FIG. 1) can be actuated, is arranged on the support body 20 in the region of the head piece 25.
  • the actuating mechanism 60 is mounted in a correspondingly designed recess on the head piece 25 of the support body 20 and is described below with reference to FIG. 4.
  • FIG. 4 shows a section shown on a larger scale along the line IV-IV in FIG. 3, with a link guide 35 arranged on one side wall 21 of the cantilever-shaped support body 20 and a part of the actuating mechanism 60.
  • the link guide 35 has two at a parallel distance mutually arranged and substantially circular arc-shaped guide webs 36 and 37.
  • the guide webs 36, 37 are connected to one another by a first end stop 39 at the end facing the pivot axis XX (FIG. 3).
  • the slide piece 85 mounted on the axle body 79 of the backrest support 75 (FIG. 3) is arranged.
  • the link guide 35 and 35 * is designed and arranged on the support arms 77, 77 * of the backrest support 75 such that they each form the arcuate curved path 38.
  • the imaginary center D shown in FIG. 4 for the arcuate curved path 38 of the link guide 35, 35 * is arranged above the supporting body 20 in this exemplary embodiment.
  • the imaginary center D is preferably arranged such that it lies in the working position of the chair 100 between the surface 9 of the support body 20 and the facing and essentially horizontally oriented underside 9 'of the seat support 45 (FIG. 1).
  • a stop 86 which limits the pivoting movement oriented in the double arrow direction R can be arranged in each of the two link guides 35, 35 '.
  • the stop 86 can be arranged as desired in the respective link guide 35, 35 'depending on the desired pivoting movement and can be fastened by means not shown.
  • the sliding piece 85, 85 * is pivoted, starting from the basic position according to FIG. 4, approximately in the order of magnitude between 20 mm to 50 mm in the link guide 35, 35 '.
  • the sliding piece 85, 85 ' starting from the basic position, is advantageously only with a relatively small like swiveled about 20 mm to 30 mm.
  • the actuating mechanism 60 partially shown in FIG. 4 has a release lever 63 which is provided with a pressure piece 63 'and is mounted on the support body 20 by means of two spaced-apart tabs 62 and 64 and an axle bolt 61.
  • the tab 64 is operatively connected to a second pulling and pushing element 6, shown schematically in FIG. 5, such that when the pulling movement is carried out in the direction of the arrow 8 '(FIG. 5), the release lever 63 pivots out of the position shown and the pressure piece 63' with the plunger 16 'of the gas pressure spring 16 is engaged and disengaged in the case of a pushing movement in the direction of the arrow 8.
  • the raster mechanism 65 which is arranged on one side wall 21 'of the supporting body 20 and is fastened by means not shown, is shown on a larger scale in a sectional view. Furthermore, one can see a section of the actuating mechanism 60 arranged on the support body 20 and operatively connected to the partially illustrated second tension and push member 6 for the gas pressure spring 16 arranged in the standing column 15 (FIG. 1), and a section of the backrest support 75 with the second designed as a latching element Intermediate piece 80.
  • the second intermediate piece 80 is arranged in a manner not shown in detail between the two support arms 77 and 77 * (FIG. 3) of the backrest support 75 arranged at a parallel distance from one another and fastened by means not shown.
  • the intermediate piece 80 shown in FIGS. 5 to 7 in the profile cross section is provided with a web 81 and 81 'at both ends spaced apart in the pivoting direction. Between the two webs 81 and 81 'there are a plurality of recesses 82, 82' arranged at intervals in the direction of movement of the backrest support 75 in the base 80 '. and 83.83 '. Corresponding webs 84, 84 'and 84 "are arranged between the preferably conically tapering recesses 82, 82' and 83, 83 '.
  • raster mechanism essentially comprises a housing 70 provided with a lateral recess 66 ", a cover 66 arranged thereon and fastened by means not shown, one grid tab 67 mounted in the housing 70, a pressure piece 74 operatively connected to it, and a grid head 71.
  • the individual functional elements of the grid mechanism 65 are described below.
  • the housing 70 is provided with a first recess 70 'and a second recess 70 "connected to it.
  • the grid tab 67 and the pressure piece 74 are arranged in the first recess 70', the grid head operatively connected to the pressure piece 74 being in the second recess 70" 71 is arranged.
  • the grid tab 67 which is mounted in the housing 70 on a bolt 67 * in a manner not shown in detail, has a first tab part 68 provided with a cam 68 * and a second tab part 69 provided with a cam 69 *.
  • the first tab part 68 is arranged in a recess 66 ′ provided on the inside of the cover 66.
  • the recess 66 ′ has a system designed to correspond to the end edge 68 ′′ and two conically widening side surfaces, not designated.
  • the second tab part 69 which is likewise provided with an arcuate end edge 69 ", is arranged in a recess 74" of the pressure piece 74, the recess 74 "being approximately analogous to the recess 66 'arranged in the cover 66.
  • the pressure piece 74 is formed with a molded-on guide part 74 'Coaxially arranged in a blind hole 72 of the raster head 71 and operatively connected to a first compression spring 73 arranged in the recess 72.
  • the raster head 71 is guided with a stepped guide part 71 'in a recess (not designated) of the housing 70 and is provided with a raster pin 71 ′′ formed thereon and tapering in a conical manner.
  • the raster head 71 is dependent on the actuated raster tab 67 against the restoring force of the blind hole 72 arranged first compression spring 73 and against the restoring force of a arranged on the guide part 71 'and supported in the second recess 70 "of the housing 70 second compression spring 73' in the axial direction such that the raster pin 71" in one of the at a distance from each other Intermediate piece 80 provided recesses 82.82 'or 83.83' snaps into place.
  • the ratchet tab 67 of the raster mechanism 65 described in detail above by means of a first pulling and pushing member 5, which is operatively connected to the ratchet tab 67 and shown schematically and passed through the recess 66 ′′, by means of a pushing movement oriented in the direction of arrow 7 in such a way around the bolt 67 'pivoted that the raster head 71 is displaced in the axial direction against the restoring force of the two compression springs 73, 73' and snaps into the recess 82 of the intermediate piece 80, for example, with the integrally formed raster pin 71 ". In this position, the relative movement of the backrest support 75 with respect to the support body 20 is blocked.
  • the ratchet tab 67 is pivoted about the bolt 67 'by means of the pulling and pushing member 5 by a pulling movement oriented in the direction of the arrow 7', so that the raster head 71 is displaced in the axial direction by the restoring force of the two compression springs 73, 73 * is that the raster pin 71 "comes out of engagement of the intermediate piece 80.
  • the backrest support 75 can be pivoted freely relative to the support body 20.
  • the locking tab 67 is pivoted about the bolt 67 'by means of the pulling and pushing member 5 by the pushing movement oriented in the direction of the arrow 7, so that the locking pin 71 "can snap into one of the recesses 82, 82' or 83.83 * , or as shown in FIG. 7, rests on one of the webs 84, 84 'or 84 "provided between the recesses 82, 82' or 83, 83 'in a so-called preselection position until the grid pin 71" during a pivoting movement of the Backrest support 75 engages by the restoring force of the compression springs 73.73 * and depending on the position in one of the recesses 82.82 'or 83.83'.
  • Fig. 8 shows on a larger scale and in a sectional view the front joint 1 (Fig. 1, 2) and you can see the swivel body 40 arranged and supported on the knee side on the support body 20 with the deformed tube part 41 'and the torsion element 46 arranged therein, which the Receiving tube 41 penetrates in the axial direction.
  • the torsion element 46 has two torsion bars 46 ', 46 "which are arranged one above the other and have a rectangular cross section.
  • the two torsion bars 46', 46" are preferably arranged with the adjacent longitudinal sides approximately horizontally in the swivel body 40.
  • a clamping element 50 is attached, which with the the support bearing 30 of the support body 20 arranged clamping mechanism 55 is operatively connected.
  • the chip element 50 arranged and fastened on the receiving tube 41 of the swivel body 40 will be described later in connection with FIG.
  • the support bearing 30 shown in the profile cross section and designed to receive and mount the tensioning mechanism 55 is also shown.
  • the support bearing 30 has a bearing wall 31 formed on an end wall 26, a base part 32 formed thereon and on the bottom 24 of the supporting body 20, and an intermediate piece 32 * arranged at a parallel distance therefrom.
  • the clamping mechanism 55 which is arranged in the approximately housing-shaped support bearing 30, has a hub piece 56 (not shown in more detail) with rollers 57 and 57 * mounted thereon on the side.
  • the hub piece 57 is penetrated by an adjusting screw 59 which is supported with a bearing part 29 on the inside 31 'of the contact wall 31 and which is supported in the recess 33' of the web 33 with the other end, which is not specified in any more detail.
  • the adjusting screw 59 is operatively connected to the adjusting wheel 58 in such a way that the hub piece 56 with the two rollers 57, 57 'mounted laterally on it is displaced either in the direction of the arrow Z' or Z "by a rotary movement oriented about the axis 59 'in the direction of the arrow Y'.
  • FIG. 9 shows a section of the swivel body 40 shown in plan view and on a larger scale, which essentially forms the front swivel axis XX.
  • the swivel body 40 comprises the receiving tube 41, which in the region of the partially shown axis of symmetry SS of the chair 100
  • a web 52 and 53 of the tensioning element 50 is arranged on both sides of the deformed tube part 41 '.
  • the two webs 52, 53 each grip with an approximately semicircular section 52 'and 53', which is adapted to the outside diameter of the receiving tube 41, over the receiving tube 41 and are fastened to it in a manner not shown.
  • the plate 51 Arranged between the two webs 52 and 53 is the plate 51, which is provided with the elongated recess 51 'for the set screw 59 and is fastened to the webs 52, 53 and to the receiving tube 41.
  • a clamping sleeve 42 arranged at one end of the receiving tube 41 with the part 49 of the seat carrier 45 arranged and fastened thereon (FIG. 3).
  • the clamping sleeve 42 is provided at the outer end with a section 42 'which is adapted to the outer contour of the two torsion bars 46' and 46 ".
  • the other, opposite end of the receiving tube 41 is designed analogously and is provided with a clamping sleeve 43, which at the outer end for adapted section 43 '(Fig.3).
  • the swivel body 40 is shown in section along the line AA in FIG. 9, and the tubular part 41 * which is adapted to the shape of the two torsion bars 46 ′ and 46 ′′ and the receiving tube 41 arranged in the one clamping sleeve 42 can be seen
  • a slide bushing 44 and 44 ' is preferably arranged at the ends of the receiving tube 41, on which the clamping sleeves 42 and 43 which are operatively connected to the seat carrier 45 are mounted.
  • the seat bracket 45 fastened to the two clamping sleeves 42, 43 of the swivel body 40 and also via the second articulation point
  • FIG. 11 shows, as a second exemplary embodiment, a section of an office chair 200, shown in a schematic side view, and one recognizes a partially illustrated stand column 115, a support body 120 mounted thereon and provided with a first articulation point 1 'in the knee-side area, a support body mounted thereon and for receiving a seat body 110 designed seat support 145 and a backrest support 175.
  • the seat support 145 has two brackets 146 and 148 which are arranged at a parallel distance from one another and which are each provided with a sleeve body 147 and 149 attached to them at the knee end.
  • the support body 120 which is provided with a hollow cylindrical bearing part 126 (FIG. 12), is arranged between the two sleeve bodies 147 and 149.
  • the standing column 115 partially shown in FIG. 11 comprises a standing pipe 117 and a gas pressure spring 116 arranged therein, which is operatively connected to an actuating mechanism 130.
  • the elements of the office chair 200 mounted on the standing column 115 can, as described above in connection with the office chair 100 according to FIG. 1, be adjusted in height on the one hand in the double arrow direction Z and on the other hand can be rotated in the double arrow direction Y about the vertical axis 115 'of the standing column 115 in the horizontal plane .
  • the actuating mechanism 130 which can be brought into engagement with the tappet 116 'of the gas pressure spring 116 is preferably designed analogously to the actuating mechanism 60 described in connection with FIGS. 4 and 5.
  • the backrest support 175 comprises the two support arms 177 and 178 oriented in the direction of the knee joint 1 *, which are operatively connected to the two arms 146 and 148 of the seat support 145 via a second joint 2 'and are mounted on the support body 120 via a third joint 3' .
  • a pivot device 140 Arranged on the support body 120 in the area of the knee is a pivot device 140, which essentially forms the horizontal pivot axis X'-X ', and a schematically illustrated support bearing 123, which is designed to accommodate a tensioning mechanism 153 (not shown in more detail).
  • the tensioning mechanism 153 for adjusting the resilient restoring force of the spring elements 141, 141 '(FIG.
  • adjusting wheel 152 which can be rotated about an axis 152' in the double arrow direction Y 'and an adjusting screw 151.
  • the adjusting screw 151 is provided with a tensioning element 150 Swivel device 140 operatively connected.
  • the office chair 200 is shown in a top view and one can see the support body 120 which is arranged on the axis of symmetry S'-S 'and is mounted with the head piece 125 on the stand column 115 (FIG. 11).
  • the support body 120 has two through a floor 124 interconnected and spaced apart side walls 121 and 121 '.
  • a bearing pin 122 and 122 ' is arranged on each of the two side walls 121, 121' and fastened in a manner not shown.
  • a sliding block 136, 136 ' is mounted on each of the two bearing bolts 122 and 122' and fastened by means not shown.
  • the support body 120 is provided with the bearing part 126 oriented transversely to the axis of symmetry S'-S '.
  • the bearing part 126 has a recess 126 'in which the clamping piece 150 is arranged and mounted in a manner not shown.
  • the arms 146 and 148 of the seat support 145 are arranged on both sides of the axis of symmetry S * -S *, which before the sleeve body 147 and 149 are attached to the knee-side area.
  • the sleeve bodies 147 and 149 are designed to accommodate torsion bars 141 and 141 * shown schematically in FIG.
  • the clamping bushes 142 and 142 ' are arranged in a manner not shown in the two sleeve bodies 147 and 149 fastened to the arms 146, 148 of the seat support 145 (FIG. 12).
  • the two arms 146 and 148 are each mounted on the swivel axis X'-X 'of the swivel device 140 via the sleeve bodies 147 and 149 arranged and fastened thereon.
  • a bearing pin 144 and 144 ' is arranged on the two arms 146 and 148, respectively.
  • the bearing arms 177 and 178 of the backrest support 175, which are each provided with a bearing 174 and 174 ', are articulated on the bearing bolts 144, 144'.
  • the link guide 135 and 135 'on the two support arms 177 and 178 which is oriented parallel to the axis of symmetry S'-S' the backrest support 175 arranged.
  • the sliding block 136 and 136 ' which is mounted on the supporting body 120 by means of the articulation pin 122, 122', is arranged in the arcuate link guide 135 and 135 *.
  • the link guide 135 and 135 ' is moved during the pivoting movement of the backrest support 175 oriented in the seat direction relative to the two sliding blocks 136, 136' mounted on the fixed support body 120.
  • the imaginary center D 'for the arcuate curved path of the link guide 135 and 135' is above the upper edge 177 * and 178 ' of the two support arms 177 and 178 of the backrest support 175, which are designed to be inclined from the second articulation point 2 'in the direction of the third articulation point 3'.
  • the imaginary center point D * is preferably arranged such that it is in the working position of the chair 200 (FIG. 11) between the substantially horizontally oriented surface 146 'and 148' of the two arms 146 and 148 of the seat support 145 and the upper edge 177 * and 178 'of the inclined support arms 177 and 178 of the backrest support 175 is arranged.
  • the two support arms 177 and 178 are connected to one another by a backrest part 176 and by a base 176 '(FIG. 12) formed thereon.
  • Fig. 13 shows a section on a larger scale according to the line BB in Fig. 11 and you can see the backrest support 175 arranged between the two arms 146 and 148 of the seat support 145, which with the two support arms 177 and 178 on the bearing bolts 144 and 144 • the two arms 146, 148 are mounted.
  • a shoulder 179 ' is provided on the inside 177 "of the support arm 177, in which a recess 172 designed as an arcuate curved path for the link guide 135 is arranged.
  • a shoulder 179 " On the opposite inside 178" of the other support arm 178 there is a shoulder 179 ", in which a recess 173 designed as an arcuate curved path for the link guide 135 'is also arranged. Furthermore, one can see the recesses 172 and 173 arranged in the two recesses and mounted on the bearing bolts 122 and 122' Slide blocks 136 and 136 '.
  • the slide blocks 136 and 136 * are each held in the cam track of the link guide 135 and 135' by a slide plate 137 and 137 'fastened to the shoulders 179' and 179 "by screws 138, 138 '.
  • the two sliding plates 137, 137 ' are preferably, as shown in FIG. 14 and FIG.
  • FIG. 13 a raster mechanism 155 arranged between the two side walls 121, 121 * of the supporting body 120, which can be brought into engagement with a raster segment 181 arranged on the bottom part 179 of the backrest support 175 via a raster head 170 connected to it.
  • the grid segment 181 provided with a toothing (FIGS. 16a to 16b) is arranged in a recess 180 provided on the base part 179 of the backrest support 175 and is fixed to the base part 179 by lateral webs 180 * and 180 ".
  • the function and details of the grid mechanism 155 is shown in FIG Connection described with Figures 16a to 16c.
  • FIG. 14 shows a section along the line CC in FIG. 13 and one recognizes a section of the office chair 200 shown in the working position according to FIG. 11 with the arm 148 of the seat support 145 articulated on the bearing 174 'of the support arm 178 and also on the one Support arm 178 of the backrest support 175 arranged link guide 135 *.
  • the circular arc-shaped recess 173 for the link guide 135 ' is delimited by the two opposite side walls 173' and 173 ".
  • the sliding block 136 ' which is arranged on the one bearing pin 122 *, is supported in the recess 173 and is guided by the concave sliding plate 137' and screws 138 '. In the working position shown in FIG.
  • the pivoting movement of the support arm 178 is limited by the one side wall 173 "of the recess 173. Furthermore, one can see the theoretical center D 'arranged above the upper edge 178' of the support arm 178 for the arcuate recess 173 of the link guide 135 '.
  • the bottom part 179 of the backrest support 175 is arranged below the link guide 135 '.
  • the section of the office chair 200 is shown in the backward inclined position and the inclined arm 148 and the support arm 178 pivoted relative to the fixed sliding block 136 'around the bearing 174 * can be seen of the backrest support 175.
  • the pivoting movement of the support arm 178 is limited by the other side wall 173 * of the recess 173.
  • the link guide 135 arranged on the opposite support arm 177 of the backrest support 175 is configured analogously to the link guide 135 'described above in connection with FIGS. 14 and 15.
  • the movement sequence of the backrest support 175, which is oriented relative to the support body 120 arranged on the fixed support column 115, with the cantilevers 146 and 148 of the seat support 145 articulated thereon is carried out absolutely synchronously.
  • FIGS. 14 and 15 show the imaginary center D * arranged above the upper edge 178 'of the support arm 178 for the theoretical center line R "of the cam track.
  • FIG. 16a the backrest support 175 is blocked with respect to the supporting body 120 in the sitting and working position and in FIG. 16b in a so-called freewheel position and in FIG. 16c in a backward inclined and blocked position (relax position).
  • the grid segment 181 arranged on the front base part 179 of the backrest support 175 is provided with a toothing 183 arranged between two end pieces 182 and 182 *, which, starting from the blocked position according to FIG. 16a, during the pivoting movement of the Backrest support 175 can also be blocked in further intermediate positions up to the blocked position according to FIG. 16c.
  • the backrest support 175, which can be pivoted relative to the supporting body 120 can be blocked in a total of six positions.
  • the grid segment 181 can, however, also be formed with a larger or smaller number of teeth of the teeth 183 oriented in the pivoting direction.
  • 16a to 16c each shown in a view and partially in section, includes locking mechanism 155 comprising a bearing plate 156, a first locking lever 160 pivotally mounted thereon, a second locking lever 165 pivotally connected thereto, and a locking head 170 arranged in a guide bushing 171 Guide bushing 171 provided with a flange 171 'is arranged in a connector 128 provided, for example molded, on the bottom 124 of the support body 120.
  • the two raster levers 160 and 165 are operatively connected to one another via a pulling and pushing member 5 '.
  • cams 156 'and 156 which are arranged at a distance from one another and two flanges 157 and 157' which are arranged at a distance from one another, each of which is provided with a cutout 157".
  • a concave leaf spring 154 is arranged between the two flanges 157 and 157, which has the two ends on the cams 156 'and 156 "of the bearing plate 156 and the underside, which is not shown, on two rods arranged between the flanges 157, 157' and provided as counter bearings 158 and 158.
  • the first raster lever 160 has a cylindrical axle body 162, which is provided at both ends with a washer 162 'and 162 ".
  • the first locking lever 160 is mounted with the axle body 162 in the cutout 157 "of the two flanges 157, 157 '.
  • first tabs 161, 161' are arranged, which overlap with the second tabs 164, 164 'of the second locking lever 165 a journal 163 are operatively connected.
  • the second raster lever 165 is mounted in a bearing plate 167 of the raster head 170 via a cylindrical axle body 166 arranged thereon.
  • a pulling and pushing element 5 ' is arranged on the bearing journal 163 connecting the two locking levers 160 and 165, by means of which the two locking levers 160 and 165 can be pivoted depending on the direction of movement of the pulling and pushing element 5'.
  • the raster head 170 is provided on the side facing the second raster lever 165 with the bearing plate 167, which is provided with a stop 167 ′ and with a recess (not designated) designed to support the cylindrical axle body 166.
  • the bearing plate 167 which is provided with a stop 167 ′ and with a recess (not designated) designed to support the cylindrical axle body 166.
  • two spaced-apart raster pins 168 are arranged, which can be brought into or out of engagement with the toothing 183 of the raster segment 181.
  • the raster head 170 arranged in the guide bushing 171 is pressed against the second raster lever 165 by means of a compression spring 169 which is supported at one end on the bearing plate 167 of the raster head 170 and at the other end at the bottom 124 of the support body 120.
  • the two can be pivoted by a tensile force acting on the pulling and pushing member 5 ′ around the bearing journal 163 into the so-called free-running position (FIG. 16b) in which the raster head 170 due to the action of the compression spring 169 with the raster pins 168 arranged thereon, the toothing 183 of the raster element 181 disengages (FIG. 16b).
  • the two locking levers 160 and 165 are then pivoted by the pulling and pushing element 5 * into a preselection position, not shown, in which the locking pins 168 are arranged above the toothing 183.
  • the raster pins 168 are restored by the restoring force of the leaf spring 154 brought into engagement with the toothing 183 of the raster element 181 (FIG. 16c).

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Special Chairs (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

L'invention concerne un siège, notamment un siège de bureau (100) de hauteur et d'inclinaison réglables, comprenant essentiellement un support (20) fixé à une colonne (15), un corps pivotant (40) fixé au support côté genou, une assise (45) pivotante autour d'une première articulation (1) située côté genou et un dossier (75) relié par liaison de forme à l'assise par une seconde articulation (2). Le dossier (75), couplé au support (20) par une troisième articulation (3), est pourvu de coulisseaux (85, 85') au moyen desquels il est monté dans des coulisses (35, 35') courbes, lesquelles sont fixées au support (20) entre la première articulation (1) côté genou et la colonne (15). Le mouvement de bascule du dossier (75) et de l'assise (45), reliée par liaison de forme au dossier (75), mouvement à guidage forcé le long de la coulisse (35, 35'), peut être bloqué dans plusieurs positions que l'on peut choisir ou bien désenclenché à l'aide d'un mécanisme à enclenchement (65) monté sur le support (20) et pouvant être mis en prise avec le dossier (75).
EP97941778A 1996-10-11 1997-10-07 Siege, notamment siege de bureau Expired - Lifetime EP0884964B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
CH2479/96 1996-10-11
CH247996 1996-10-11
CH247996 1996-10-11
CH2237/97 1997-09-23
CH223797 1997-09-23
CH223797 1997-09-23
PCT/CH1997/000378 WO1998016138A1 (fr) 1996-10-11 1997-10-07 Siege, notamment siege de bureau

Publications (2)

Publication Number Publication Date
EP0884964A1 true EP0884964A1 (fr) 1998-12-23
EP0884964B1 EP0884964B1 (fr) 2002-06-05

Family

ID=25689869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97941778A Expired - Lifetime EP0884964B1 (fr) 1996-10-11 1997-10-07 Siege, notamment siege de bureau

Country Status (9)

Country Link
US (1) US5971481A (fr)
EP (1) EP0884964B1 (fr)
JP (1) JP3947934B2 (fr)
BR (1) BR9706831A (fr)
DE (1) DE59707419D1 (fr)
DK (1) DK0884964T3 (fr)
ES (1) ES2174286T3 (fr)
TW (1) TW360509B (fr)
WO (1) WO1998016138A1 (fr)

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US6395888B1 (en) * 1996-02-01 2002-05-28 Gilead Sciences, Inc. High affinity nucleic acid ligands of complement system proteins
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IT1308075B1 (it) * 1999-06-04 2001-11-29 Pro Cord Srl Sedia con sedile oscillante
DE20004361U1 (de) * 2000-03-10 2001-04-12 FROLI Kunststoffwerk Heinrich Fromme oHG, 33758 Schloß Holte-Stukenbrock Sitz für eine Stehhilfe oder für einen Büro- bzw. Werkstattstuhl
WO2001070074A1 (fr) 2000-03-24 2001-09-27 Giroflex-Entwicklungs-Ag Systeme d'assise et de dossier pour des sieges, notamment pour des chaises de bureau
US6450578B1 (en) 2000-08-18 2002-09-17 Michael Blake Taggett Ergonomic chair
USD445580S1 (en) 2000-09-28 2001-07-31 Formway Furniture Limited Chair
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
USD463144S1 (en) 2000-09-28 2002-09-24 Formway Furniture Limited Chair
AUPR054400A0 (en) 2000-09-29 2000-10-26 Formway Furniture Limited A castor
DE10125994A1 (de) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Synchronmechanik für eine korrelierte Sitz-Rückenlehnen-Bewegung eines Bürostuhles
DE60333462D1 (de) * 2002-06-25 2010-09-02 L & P Property Management Co Stütze für kipp- oder synchronisierte stühle
CA2600310C (fr) * 2005-03-01 2014-07-08 Haworth, Inc. Mecanisme de controle d'inclinaison d'un fauteuil
US7234779B2 (en) * 2005-04-08 2007-06-26 Steelcase Development Corporation Armrest with height adjustment mechanism
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US8172324B2 (en) 2008-06-06 2012-05-08 Knoll, Inc. Preference control mechanism
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CA2911817A1 (fr) * 2014-11-11 2016-05-11 Pro-Cord S.P.A. Une chaise dotee d'un coussin et d'un dossier deplacables d'une maniere synchronisee
US9883746B2 (en) * 2014-11-11 2018-02-06 Pro-Cord S.P.A. Chair with seat and backrest movable in a synchronized way
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
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
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Also Published As

Publication number Publication date
ES2174286T3 (es) 2002-11-01
JP3947934B2 (ja) 2007-07-25
US5971481A (en) 1999-10-26
WO1998016138A1 (fr) 1998-04-23
JP2000502278A (ja) 2000-02-29
BR9706831A (pt) 2001-10-16
DK0884964T3 (da) 2002-07-15
TW360509B (en) 1999-06-11
EP0884964B1 (fr) 2002-06-05
DE59707419D1 (de) 2002-07-11

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