EP0045925A1 - Meuble d'assise, particulièrement chaise de bureau tournante - Google Patents

Meuble d'assise, particulièrement chaise de bureau tournante Download PDF

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Publication number
EP0045925A1
EP0045925A1 EP81106060A EP81106060A EP0045925A1 EP 0045925 A1 EP0045925 A1 EP 0045925A1 EP 81106060 A EP81106060 A EP 81106060A EP 81106060 A EP81106060 A EP 81106060A EP 0045925 A1 EP0045925 A1 EP 0045925A1
Authority
EP
European Patent Office
Prior art keywords
seating furniture
furniture according
seat support
tabs
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.)
Withdrawn
Application number
EP81106060A
Other languages
German (de)
English (en)
Inventor
Herbert Beer
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.)
STEIFENSAND SITZMOEBEL- UND TISCHFABRIK INH. F. MA
STEIFENSAND, FRIEDRICH MARTIN
Original Assignee
F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH
Steifensand Friedrich Martin
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 DE3030009A external-priority patent/DE3030009C2/de
Priority claimed from DE19803034826 external-priority patent/DE3034826A1/de
Priority claimed from DE19803039623 external-priority patent/DE3039623A1/de
Application filed by F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH, Steifensand Friedrich Martin filed Critical F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH
Publication of EP0045925A1 publication Critical patent/EP0045925A1/fr
Withdrawn legal-status Critical Current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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit, elastically mounted in a rigid frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit, elastically mounted in a rigid frame with a central column, e.g. rocking office chairs; Tilting 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination
    • A47C1/027—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination by means of clamps or friction locking members

Definitions

  • the invention relates to seating, in particular an office swivel chair according to the preamble of claim 1.
  • seating is known for example from DE-OS 23 35 586.
  • the disadvantage here is the insufficient strength and stability of the structure supporting the seat and allowing its pivoting. This also includes an unsatisfactory configuration of the means fixing the respective clamping position and the connection of the seat support to the base frame.
  • the object of the invention is primarily seen in improving an arrangement according to the preamble of claim 1 in such a way that it is very stable on the one hand, but on the other hand simple in construction and in particular, space-saving in the vertical direction.
  • the clamping means for fixing the respective swivel position should preferably also be simple and space-saving.
  • a simple and stable connection to the base frame is also sought.
  • the features of the characterizing part of claim 1 serve first of all. This creates a very compact and torsion-resistant and thus overall stable overall arrangement, which, however, is advantageous adhesive properties takes up little space. the space requirement in the vertical direction is small, so that such an arrangement viewed from the side hardly protrudes downwards and is therefore practically not noticeable.
  • the stability mentioned is also important because the rocking movements of the seat support to the base frame result in considerable mechanical forces. In addition, such a rocking movement can be blocked abruptly by appropriate actuation of the clamping means, which entails greater mechanical loads on the overall arrangement.
  • the invention also relates to the design of the clamping means and their actuation.
  • DE-OS 23 35 586 for pivoting the furniture parts against each other tabs are known, which are penetrated and clamped by a clamping device.
  • the arrangement according to claim 9 is advantageous in connection with such a quadrilateral.
  • the tabs or lamellae can be located approximately in the square plane, so that they do not take up any additional space here. They also contribute to stiffening the square.
  • Fig. 1 shows the armchair schematically with base 4, in which a gas spring is located for the purpose of height adjustment of the seat 1 or its seat support 2, the cone pin 4 'of which can be inserted into the opening of a bushing of a so-called supporting structure.
  • Seat 1 and seat support 2 can be pivoted about the axis 10 by means of the means explained below and can be fixed in the respective pivot position.
  • a backrest can also be provided.
  • the two seat support rails are screwed onto the seat 1 with the aid of screw holes 3, 3 '.
  • a cross-sectionally U-shaped, rail-shaped part 6 is provided as the supporting structure, the legs 6 'of this U being penetrated by a bearing shaft 7, which is fastened to the legs 6', welded on here.
  • bearing tubes 8 are fastened, welded here, inside each of which there is a plastic sleeve 9.
  • the bearing tubes 8 extend from their fastening points on the legs 2 'to close to the outer surfaces of the legs 6' of the rail-shaped part 6.
  • the plastic sleeves 9 protrude with their ends 9 'located there from the bearing tubes 8 and lie with these ends 9'. on the outer surfaces of the legs 6 'of the part 6.
  • the bearing shaft 7 is with its parts 7 'over a large length in the respective plastic sleeve 9. This also contributes to increasing the stability of this swivel mounting of the seat 1 to the base frame.
  • the swivel axis 10 is shown in broken lines.
  • This axis 10 of the rotatable mounting of the shaft 7, 7' to the Bushes 9 run horizontally and transversely to the direction of view of the person sitting on the armchair
  • the rails 2 and 6 are parallel to one another of the pairs of lamellae or plates 12.
  • Each of the plates or lamellae 12 has an L longitudinal slot 18 (see Fig. 3), wherein the longitudinal slots of all lamellae or tabs are aligned one behind the other. They are penetrated by a rod 19 which ends in a head 20 on the one hand and on the other hand has a threaded part 21 with a screw handle 22 screwed thereon.
  • the rod 19 is surrounded between the fins or tabs 12 by a tube-like part 26, the end faces of which are supported between the mating surfaces of the tabs or lamellas 12 facing them.
  • Insert plates or rings 27 can be located between the tabs and fins and also between these and the tube 26 (in the exemplary embodiment shown, two tube parts 26 are provided and welded to the rail 6).
  • the function of the Pipes 26 corresponds, the parts 20, 12, 26, 26's pressed together so that the respectively set angular position between the supporting structure (or base frame) and seat support (or seat) is fixed.
  • the size of the adjustment range is limited by the length of the slots 18, within which the rod 19 can move up or down.
  • the clamping means 11 are relatively far away from the pivot axis 10. This reduces the force to be applied by the clamping means, which not only simplifies the construction, but also simplifies operation.
  • an abutment 13 is attached to each bearing tube and two corresponding counter abutments 14 are attached to the rail-shaped part. Between the pairs of abutments 13, 14 there is provided a compression spring 15 which serves to dampen the rocking oscillation, the pretensioning of which in the rest position can be adjusted with the aid of a screw adjustment 16 only indicated in the drawing.
  • the arrangement of the damping springs in the center below the seat prevents the operator from accidentally coming to the generally dirty, possibly even oily springs with his hand or a piece of clothing.
  • FIG. 3 also shows a spring arrangement 23 with a screw bolt 24 and a compression spring 25 which, even when the handle 22 of the clamping means 11 is unscrewed, presses the two lamellae or tabs 12 against the leg 2 'of the seat support rail 2.
  • the two, in these exemplary embodiments, mutually parallel seat support rails 2 together with the pivot bearing means (in particular 7, 8 and 9) and the clamping means (in particular 19, 26) form a frame-like composite, which can be a square, which in these embodiments is designed as a rectangle.
  • a composite is very stable and rigid in itself. In particular, it is resistant to torsion.
  • additional stabilization is provided by the U-shaped rail 6 of the supporting structure, which can be welded to the tube parts 26 (see above). If necessary, more than two seat support rails could also be provided, although generally two seat support rails. should be enough.
  • An actuating lever 28 extending into the area of the bush 5 can also be provided, which is pivotably articulated on a flange 29 of the U-rail 6. Its short lever arm 28 'acts on the supporting cone and its long lever arm 28 "is used for actuation.
  • Fig. 6 Both the exemplary embodiment of Fig. 6 and the attachment of the bushing for the support cone according to the present exemplary embodiment, it can be said that in this way the support cone is very stably connected to the support structure, as a result of which violent impacts of a rocking movement can be safely intercepted.
  • two seat support rails 2 are also provided at a distance from one another and screwed to the seat (not shown here).
  • a first cross strut 3D and a second cross strut 31 are first fastened in the angles 2 'projecting downwards in the operating position; the cross strut 31 is part of the clamping means generally shown with 3z.
  • This embodiment shows that the cross struts (see item 33) can also be designed differently.
  • These cross struts 33 which are attached to the latter in the end regions of the seat support rails 2, can either take over the stiffening themselves or as additional cross struts or cross stiffeners be provided.
  • a torsion-resistant and stable quadrilateral is also formed by the seat support rails 2 and at least the transverse struts 30, 31 and additionally also by the transverse struts 33.
  • the cross struts preferably run approximately perpendicular to the seat support rails. (This also applies to Fig. 2).
  • the first cross strut 30 can be pivoted to the seat support rails by means of the screw connections 34 and thus forms the pivot axis 10 between the seat and the base frame.
  • the cross strut 30 can be a tube with a rectangular or square cross-section, to which two flat sheets 36 are welded, into which a sleeve 37 for the reception of the supporting cone 4 'is welded (see in detail FIG. 6 and the associated explanation).
  • the two groups 38, 39 of the lamellae are welded to the first cross strut, each of which is provided with slots 40 running in the pivoting direction (reference is also made in detail to the previous exemplary embodiment). In these slots, a rod 41 slides, which is located within a tube 42 and together with this essentially forms the second cross strut 31, which - viewed in the aforementioned pivoting direction - is fixedly connected to the seat support rails 2.
  • the clamping means carried by the second cross strut 31 and their actuation are designed as follows in this exemplary embodiment:
  • the rod 41 protrudes through the leg 2 'of the seat support rail 2 located on the right in FIG. 4 and ends in an abutment 41'.
  • a spring arrangement preferably a package of disc springs 43 provided, which strives to pull the rod 41 through these legs 2 'in the direction of arrow B (see also Fig. 5).
  • an abutment 44 attached to the rod 41 to the left of the left disk pack 38 presses this disk pack against the tube 42, which in turn presses with another abutment 45 against the right disk pack 39 and this against the right seat support rail 2 in FIG. 4.
  • a stiffening means can be provided between the seat support rail 2 on the left in FIG. 4 on the one hand and the rod 41 sliding therein or the bush surrounding this rod on the left of the associated leg 2 '.
  • a sleeve welded to this leg 2 'and surrounding the socket with a tight fit or the like can be used.
  • the stiffening between the parts 41, 42 and the right seat support rail in FIG. 4 results from the action of the springs 43.
  • the lever 52 engages with a bushing 47 a bolt 48 which can be inserted through the lateral bores of a hollow profile piece 49 and there is screwable with.
  • the hollow profile piece 49 is welded to the leg 2 '.
  • a lever arm part 50 is welded to the socket 47 and its distance from the axis of rotation 51 of the bolt 48 and thus of the lever 52 forms the short lever arm.
  • the lever arm part 50 presses against the abutment head 41 'when the lever 52 is raised in the direction of the arrow 46. The pressure thus achieved on the head 41 'is direct and very large.
  • the handle 52 ′ is located on the lever 52, the distance from the axis 51 representing the long lever arm.
  • the cross section z. B. circular or square hollow profile piece 49 protects the user against touching the dirty or oily springs 43. Its outer end and the part of the lever engaging therein can also be covered by a cover cap 53 made of a preferably elastic material, eg. B. plastic, against the ingress of dirt and against accidental contact.
  • the cap 53 slides on the lever 45 with a neck-shaped extension 54 .
  • the springs which dampen the rocking or swiveling movement are provided here with two packs 55 of strip-shaped metal sheets which, on the one hand, are screwed firmly to the first cross strut 30 at 56 and, on the other hand, slide against the second cross strut 31 or the pipe 42.
  • Fig. 6 shows that the sleeve 37 has an upwardly tapered conical bore, the taper of which corresponds to that of the supporting cone 4.
  • a threaded screw 57 is provided, which with their rotation on the end face 58 of the support cone 4 'and thus a push-off or pull-off device of the entire construction shown in FIG. 4 of the support cone 4.' and thus forms from the base.
  • a further lever 60 is provided and welded to a bearing bush 61, which in turn is rotatably fastened to the cross strut 30.
  • the shorter lever arm 62 of the lever 60 rests on the actuating end 59 of the gas spring mounted in the supporting cone, so that the gas spring can be actuated in order to raise or lower the seat surface by lifting the lever 60 in the direction of arrow 63.
  • the lever arm 62 and the part 59 are covered and protected by the plate 36 upwards.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Hydrogenated Pyridines (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP81106060A 1980-08-08 1981-08-03 Meuble d'assise, particulièrement chaise de bureau tournante Withdrawn EP0045925A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3030009 1980-08-08
DE3030009A DE3030009C2 (de) 1980-08-08 1980-08-08 Sitzmöbel, insbesondere Bürodrehstuhl
DE3034826 1980-09-16
DE19803034826 DE3034826A1 (de) 1980-09-16 1980-09-16 Stuhl, insbesondere buerodrehstuhl, mit zum fussgestell schwenkbarem sitz
DE3039623 1980-10-21
DE19803039623 DE3039623A1 (de) 1980-10-21 1980-10-21 Stuhl, insbesondere buerodrehstuhl, mit zum fussgestell schwenkbarem sitz

Publications (1)

Publication Number Publication Date
EP0045925A1 true EP0045925A1 (fr) 1982-02-17

Family

ID=27188817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106060A Withdrawn EP0045925A1 (fr) 1980-08-08 1981-08-03 Meuble d'assise, particulièrement chaise de bureau tournante

Country Status (4)

Country Link
EP (1) EP0045925A1 (fr)
DK (1) DK353181A (fr)
FI (1) FI812450A7 (fr)
NO (1) NO812665L (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394784A1 (fr) * 1989-04-27 1990-10-31 Lineager S.R.L. Dispositif à frottement pour ajuster l'inclinaison d'un siège, en particulier d'une chaise de bureau
GB2252725A (en) * 1991-02-15 1992-08-19 Ashfield Eng Co Locking adjustment for furniture
WO1996011611A1 (fr) * 1994-10-17 1996-04-25 Sifa Sitzfabrik Gmbh Support de siege pour chaises de bureau ou analogue
WO1996025070A1 (fr) * 1995-02-15 1996-08-22 Ashfield Engineering Company Wexford Limited Dispositif de commande pour un mecanisme de blocage monte sur une chaise
WO1999009861A1 (fr) * 1997-08-25 1999-03-04 Sylve Moheim Chaise de travail
WO1999017637A1 (fr) * 1997-10-02 1999-04-15 Sifa Sitzfabrik Gmbh Support de siege pour chaises

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1569404A (fr) * 1967-09-18 1969-05-30
US3693925A (en) * 1970-11-04 1972-09-26 Daniel Weinstein Tilting chair mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1569404A (fr) * 1967-09-18 1969-05-30
US3693925A (en) * 1970-11-04 1972-09-26 Daniel Weinstein Tilting chair mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394784A1 (fr) * 1989-04-27 1990-10-31 Lineager S.R.L. Dispositif à frottement pour ajuster l'inclinaison d'un siège, en particulier d'une chaise de bureau
GB2252725A (en) * 1991-02-15 1992-08-19 Ashfield Eng Co Locking adjustment for furniture
AU653199B2 (en) * 1991-02-15 1994-09-22 Ashfield Engineering Company (Wexford) Limited An adjustment mechanism for furniture
GB2252725B (en) * 1991-02-15 1995-04-19 Ashfield Eng Co Wexford Ltd An adjustment mechanism for furniture
US5423595A (en) * 1991-02-15 1995-06-13 Ashfield Engineering Company Wexford Limited Adjustment mechannism for locking relatively movable parts of furniture
WO1996011611A1 (fr) * 1994-10-17 1996-04-25 Sifa Sitzfabrik Gmbh Support de siege pour chaises de bureau ou analogue
US5685607A (en) * 1994-10-17 1997-11-11 S I F A Sitzfabrik Gmbh Office chair seat carrier
WO1996025070A1 (fr) * 1995-02-15 1996-08-22 Ashfield Engineering Company Wexford Limited Dispositif de commande pour un mecanisme de blocage monte sur une chaise
US5863099A (en) * 1995-02-15 1999-01-26 Ashfield Engineering Company Wexford Limited Actuator for a chair mechanism lock
WO1999009861A1 (fr) * 1997-08-25 1999-03-04 Sylve Moheim Chaise de travail
WO1999017637A1 (fr) * 1997-10-02 1999-04-15 Sifa Sitzfabrik Gmbh Support de siege pour chaises
US6131996A (en) * 1997-10-02 2000-10-17 Sifa Sitzfabrik Gmbh Seat carrier for chairs

Also Published As

Publication number Publication date
NO812665L (no) 1982-02-09
DK353181A (da) 1982-02-09
FI812450L (fi) 1982-02-08
FI812450A7 (fi) 1982-02-08

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19820618

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: STEIFENSAND, FRIEDRICH MARTIN

Owner name: STEIFENSAND SITZMOEBEL- UND TISCHFABRIK INH. F. MA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19831107

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BEER, HERBERT