WO1993007782A1 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

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Publication number
WO1993007782A1
WO1993007782A1 PCT/EP1992/002262 EP9202262W WO9307782A1 WO 1993007782 A1 WO1993007782 A1 WO 1993007782A1 EP 9202262 W EP9202262 W EP 9202262W WO 9307782 A1 WO9307782 A1 WO 9307782A1
Authority
WO
WIPO (PCT)
Prior art keywords
chair
chair according
armrest
support section
height adjustment
Prior art date
Application number
PCT/EP1992/002262
Other languages
German (de)
English (en)
Inventor
Claus Uredat
Wolfgang Ritter
Original Assignee
Röder Gmbh Sitzmöbelwerke
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 Röder Gmbh Sitzmöbelwerke filed Critical Röder Gmbh Sitzmöbelwerke
Priority to EP92920379A priority Critical patent/EP0609251A1/fr
Publication of WO1993007782A1 publication Critical patent/WO1993007782A1/fr

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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0308—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable by rotation

Definitions

  • the invention relates to a chair, in particular an office chair, with at least one adjustable armrest arranged on the chair.
  • a chair with an adjustable armrest is known from GB-A-2 110 925.
  • the latter is made of flexible material and can be adjusted to an upper or a lower position.
  • an individual height adjustment is not possible, as it would be desirable in itself - to adapt to users with different body sizes.
  • this object is achieved by a chair and in particular an office chair with at least one armrest arranged on the chair, which has an armrest section and at least one support section running downward therefrom, and with a device for height adjustment of this support section.
  • This makes it easy to adjust the height of the armrest section and thus to adapt it individually to the body size of the respective user.
  • the armrest has two support sections running downward from the armrest section, one of which leads to a front area of the chair and the other to a rear area of the chair, and that at least one of these support sections has a device for Height adjustment is assigned. So you get a stable and resilient armrest with an easy way to adjust the height.
  • a very advantageous development of this idea is characterized in that one of the support sections is connected via a joint to the armrest section adjoining it. This gives a fulcrum in the area of the transition to the armrest section, so that the height adjustment device on the other support section can be designed very simply.
  • the chair is designed such that the support section provided with the joint is rigidly connected to the relevant area of the chair. This makes the device for height adjustment very simple and requires little effort.
  • the joint can preferably be designed as a flexible section of the armrest, or also as a swivel joint, and one proceeds in a particularly preferred manner in such a way that the other support section in the region of the device for height adjustment runs at least almost concentrically to this joint. This results in a technically safe and aesthetically appealing design.
  • Another preferred embodiment is characterized in that the one support section is connected via a swivel joint to the corresponding area of the chair, with particular advantage being that the device for height adjustment is provided on the other support section, and that the other support section is in the area this device runs at least almost concentrically to the swivel. This also makes it possible to design the height adjustment very simply, sensibly and without a large number of moving parts, and in addition in an aesthetically pleasing manner.
  • a particularly advantageous height adjustment is characterized in that the support section cooperating with the height adjustment device is provided in the manner of a toothed rack with teeth which mesh with a gear wheel of the device which can be rotated by the user of the chair.
  • the support section is included directly as an active part in the device for height adjustment, the procedure being particularly advantageous in such a way that the toothing is incorporated directly into the material of the support section.
  • a manually operable drive device is provided for driving the gearwheel, which has a detent in at least one predetermined rotational position.
  • the gearwheel for its drive is provided eccentrically with a coupling member, which in turn is connected eccentrically to a second rotatable member, and that the coupling member is assigned the manually operable drive device.
  • the coupling member connects the gearwheel - completely analogous to the coupling between two drive wheels of a locomotive - with the second rotatable member, so that these are positively coupled, whereby an additional coupling, for example by means of a toothed belt, may be provided, and the coupling member becomes in turn driven by the manually operable drive device when it is rotated by the user of the chair.
  • FIG. 1 is a side view of a chair according to the invention, which shows an armrest once - with solid lines - in its uppermost and on the other - with dash-dotted lines - in its lowest position,
  • FIG. 1 shows a detail of FIG. 1
  • FIG. 3 shows a variant of FIG. 1,
  • FIG. 9 is a height adjustment analogous to FIG. 7, which is provided with an additional catch, partially seen in the direction of line IX-IX of FIG. 11, 10 is a sectional view seen in the direction of line XX of FIG. 9,
  • 15 u. 16 shows an exemplary illustration of another, less preferred device for height adjustment of the armrest.
  • Fig. 1 shows an office chair 10 with a base frame 11 with rollers 12, on which a seat part 13 and a backrest 14 are attached.
  • the seat part 13 and backrest 14 are only shown schematically, as is an armrest 18.
  • the armrest 18 has an armrest section 22 on which the user of the chair 10 can support his left forearm. (Naturally, such an armrest 18 will be provided on both sides of the chair 10.)
  • a front support section 17 extends downward from the armrest section 22 and is rigidly attached to the underside of the front section of the seat part 13 at a point 16.
  • the support section 17 extends at an angle alpha of e.g. 60 ° obliquely forwards and upwards to an articulation point 21, where it merges into the armrest section 22.
  • the latter extends from the articulation point 21 backwards and upwards and here, as shown, is convexly curved upwards.
  • the angle at the hinge point 21 is, as shown, variable, e.g. in this embodiment approximately 100 to 110 °.
  • the armrest section 22 extends to a point 23 and merges there into a rear support section 24, which runs downwards and approximately concentrically with the hinge 21 and is height-adjustable in its lower section and fastened to a device 26 for height adjustment, which in turn is on the underside of the seat part 13 and at its rear area is fastened by means of a fastening part 30.
  • the distance of the rear support section 24 from the joint 21 is denoted by R in FIG. 1.
  • the joint 21 can be designed as a flexible section of the armrest 18.
  • a " swivel joint can be provided at this point, for example, which enables rotation between the front support section 17 and the arm support section 22. In this way, it is possible to move the arm support section 22 between the uppermost position shown in solid lines in FIG. 1 and the lowest position 22 'shown in dash-dotted lines in FIG. 1 is infinitely variable.
  • FIG. 3 shows another embodiment of a chair 10 'according to the invention.
  • the basic structure of the chair largely corresponds to that according to FIG. 1, and the same reference numerals are therefore used as in FIG. 1 for the same or equivalent parts, and these parts are not described again. This also applies analogously to the following further exemplary embodiments.
  • the height-adjustable armrest 18 ' is rotatably articulated here with its front support section 17' at a point 16 'on the underside of the front section of the seat part 13.
  • the armrest 18 ' is designed to be rigid throughout. Its front support section 17 'merges at a point 21' at an angle of approximately 110 ° into an armrest section 22 '' which can be designed similarly to the corresponding section 22 of FIG. 1.
  • the armrest section 22 passes '' at an angle of, for example, 110 ° in the downwardly extending rear support section 24 ', which is in its upper
  • the area is straight and at the bottom merges into a curved section 24 ′′ which is essentially concentric with the articulation point 16 ′ and is at a distance R * from it.
  • the curved section 24 ′′ is provided with an upper stop 28 ′′ and with a lower stop 29 ′′, and it is arranged on a device 26 ′ for height adjustment, which device, as shown, on the rear underside of the seat part 13 by means of a fastening part 30 is attached.
  • the armrest 18 r can be continuously adjusted between an upper end position, which is shown in FIG. 3 with solid lines, and a lower end position, which is shown in FIG. 3 with dash-dotted lines.
  • the stops 28 "and 29" limit this adjustment process downwards and upwards.
  • the arrangement according to FIG. 4 shows a chair 10 "with a height-adjustable armrest 18" which more or less represents the mirror image of the arrangement according to FIG. 3.
  • This has an approximately horizontal armrest section 22 "'with a rear support section 24"' and a front support section 17 ". It is designed to be rigid throughout.
  • the rear support section 24 '" here is rotatably articulated on a joint 35 on the underside of the rear section of the seat part 13.
  • At its upper end 23''it merges into the armrest section 22"' at an angle of approximately 90 °, and this in turn merges at its front end 21 '"at an angle of approximately 110 ° into a straight section 17'" of the front support section 17 ".
  • the straight section 17 '" is followed at the bottom by a curved section 17""which, as shown, runs concentrically to the articulation point 35 and is at a distance R'' r therefrom.
  • the curved section 17"" is at the top Stop 28 '"and a lower stop 29"', and it is arranged on a device 26 '"for height adjustment, which device, as shown, is fastened to the front underside of the seat part 13 by means of a fastening part 36.
  • the armrest 18 ′′ between an upper end position, which is shown with solid lines, and a lower end position, which is shown with dash-dotted lines, can be adjusted continuously.
  • the stops 28 '"and 29'" limit this adjustment in the manner shown above and below.
  • FIG. 5 shows a chair 10 "'analogous to the previous figures with a height-adjustable armrest 18a.
  • This has an approximately horizontal armrest section 22a and a front support section 17a, the latter being arranged on a device 26a for height adjustment.
  • the latter is by means of a fastening member 37 attached to the underside of the front portion of the seat part 13.
  • the support section 17a here can be straight in the manner shown and, for example, run forward at an angle beta of approximately 70 to 80 ° to the horizontal (line 38). Its uppermost position is shown in solid lines in FIG. 5 and is delimited by a lower stop 29a. Its lowest position is shown in FIG. 5 with dash-dotted lines and is delimited by an upper stop 28a.
  • the advantage here is that the armrest portion 22a yields somewhat resiliently under load, which is perceived by the user as pleasant and can be used for isometric exercises.
  • the arrangement according to FIG. 6 is essentially the mirror image of the arrangement according to FIG. 5.
  • the chair 10 "" shown there has a height-adjustable armrest 18b with an approximately horizontal armrest section 22b and a rear support section 24b running downward from its rear end , which is straight and is arranged on a device 26b for height adjustment.
  • the latter is fastened to the underside of the rear section of the seat part 13 by means of a fastening member 38.
  • the rear support section 24b can run obliquely downward in the manner shown here. Its uppermost position is shown in solid lines in FIG. 6 and is delimited by a lower stop 29b. Its lower position is shown in dash-dotted lines in Figure 6 and is limited by an upper stop 28b. In this embodiment too, the armrest section 22b can yield somewhat resiliently when loaded.
  • the variants according to FIGS. 5 and 6 are particularly advantageous in connection with the device for height adjustment according to FIGS. 9 to 14.
  • FIG. 7 and 8 show a first device H for height adjustment, as can be used in all of the exemplary embodiments described above.
  • a support section S of the armrest 18 (or 18 ′, 18 ′′, 18a, 18b) is here partially designed in the manner of a rack 50, the teeth 51 being worked directly into this part of the support section S.
  • a gear 52 which is connected via a shaft 53 to an actuator 40, which preferably has the shape of a handwheel. If, with reference to FIG. 8, this handwheel and thus the gearwheel 52 are turned clockwise, that is to say in the direction of arrow 54, the support section S is moved downward in the direction of arrow 55. When rotating counterclockwise, the support section S is moved upwards accordingly.
  • the handwheel 40 can be designed such that it can only be rotated if it has been previously, e.g. contrary to the action of a spring (not shown) has been shifted somewhat in the axial direction. Such locks are known per se and are therefore not shown in the drawing.
  • the bearing of the handwheel 40 is also not shown.
  • the device H for height adjustment according to FIGS. 7 and 8 can be used in FIG. 1 for the device 26 there, in FIG. 3 for the device 26 ', in FIG. 4 for the device 26 "', in FIG. 5 for device 26a and for device 26b in Fig. 6. This is self-evident for the skilled reader.
  • FIGS. 9 to 14 A second, preferred device 60 for height adjustment is shown in FIGS. 9 to 14.
  • a longitudinal toothing 61 is incorporated in the support member S, and this meshes with a gear 62 which is mounted in a housing 63 in which the support member S is also guided and supported in a longitudinally displaceable manner.
  • the gear 62 is connected via its shaft 64 to a first rotatable part 66 connected, that is, when the first rotatable member 66 rotates, the gear 62 rotates in the same manner.
  • the axis of rotation of gear 62 and rotatable part 66 is designated 67.
  • the part 66 is located in the interior of a handwheel 68, which is mounted via a central shaft 70 in a recess 72 in the right wall 73 of the housing 63 and is secured there with a snap ring 75.
  • a second rotatable part 76 is arranged in a recess in the interior of the handwheel 68, the axis of rotation 77 of which runs parallel to the axis of rotation 67.
  • the rotatable parts 66 and 76 are preferably in the same plane as shown.
  • An eccentric pin 80 is arranged at a distance R from the axis of rotation 67 on the first rotatable part 66 and is mounted in a corresponding recess 81 of a coupling member 82.
  • an eccentric pin 85 is provided on the second rotatable part 76 at a distance r from the axis of rotation 77 and is mounted in a corresponding recess 86 in the coupling member 82.
  • FIG. 13 shows the coupling member 82 in the form of a hexagonal part.
  • This hexagon shape has absolutely nothing to do with the function of the part, but this part only has the function, just like the coupling rod between two drive wheels of a locomotive, to force a synchronous rotational movement of the parts 66 and 76. If necessary, this can also be supported by a toothed belt 88 (FIG. 12), which also couples the parts 66 and 76 to one another. (On the wheels of a locomotive, this additional coupling is caused by the rail on which the wheels run.)
  • the coupling member 82 can assume various translation positions when actuated, causing a corresponding rotation of the gear wheel 62 and thus a height adjustment of the support member S.
  • the coupling member 82 has a circular recess 90 in its central inner region, and this is chosen so large that it is not possible in any Translated position touches the central shaft 70.
  • a radially protruding arm 92 is fastened to the shaft 70, and at its free end there is a latching element 94, here in the form of a roller, which is pressed radially outwards by a spring 95.
  • This locking member 94 bears against the inner circumference of the recess 90, and when - by turning the handwheel 68 - the arm 92 is rotated, it causes a corresponding translational movement of the coupling member 82 and thereby a rotation of the gear 62.
  • the recess 90 has at least one latching recess on its circumference.
  • these are two locking recesses 97 and 98, which are diametrically opposed.
  • the locking member 94 is in Fig. 13 in the locking recess 97 and thereby locked in this position, the coupling member 82 and thereby the gear 62, so that the height of the support member S can not change even when it is loaded, for example, because someone is sitting on the armrest.
  • Further possible snap-in recesses on the circumference of the recess 90 are indicated by dashed lines and designated 101 and 102 in FIG. 13. However, these locking positions are less favorable.
  • Figure 14a is a scaled-down view of Figure 13, with details omitted.
  • the arm 92 is rotated counterclockwise by about 90 ° compared to Fig. 14a, and this also rotates the two eccentric pins 80 and 85 by 90 ° counterclockwise, and thereby the gear 62, so that the support member S is moved up.
  • the arm 92 has rotated by 180 ° compared to FIG. 14a and has caused the gearwheel 62 to rotate by 180 °.
  • the locking member 94 is snapped into the locking recess 98.
  • Fig. 14d is identical to Fig. 14c.
  • 15 and 16 show a third variant of a device for the height adjustment, here the support member S being shown in the form of a tube.
  • a tube 132 is provided below the seat surface 13, to which a pin 134 provided with an external thread 133 is fastened, which forms a shoulder 135 at its transition to the tube 132.
  • a metal disc 136 bears against this shoulder 135 and supports a plastic part 137 which, as shown, is provided with a recess 138 for the support member S.
  • Adjoining the plastic part 137 is a plastic part 141, which is also provided in the manner shown with a cutout 142 for the support member S, and the plastic part 141 is followed by a second metal disk 143.
  • An externally knurled nut 145 made of plastic is screwed onto the external thread 133 and has the shape of a handwheel and can be easily operated by hand. As can easily be seen, by tightening the nut 145, the support member S is clamped between the plastic parts 137 and 141 and thereby fixed in terms of its height. To adjust the height, the nut 145 is loosened, the support member S is moved into the desired position, and then the nut 145 is tightened again.
  • the invention thus enables individual adaptation to the needs of the user.
  • the adjustment is simple and sensible, and can be carried out by the user when he is sitting on the chair, which enables an optimal and also very ergonomic adjustment.
  • FIGS. 9 to 14 can also be used for other purposes, i.e. it also has independent meaning.
  • a part can be attached to the arched armrest, which represents the actual armrest, e.g. a padded part, a plastic molding, or the like, as is often the case in practice, and the shape of this armrest can of course also differ from the shape of the armrest and, for example, protrude beyond it.
  • Such and similar modifications are within the scope of the present invention.

Abstract

Chaise présentant un accoudoir (18) monté sur celle-ci. Cet accoudoir présente une portion d'appui du bras (22) et au moins une portion de soutènement (17, 24) s'étendant vers le bas à partir de ladite portion d'appui du bras. Il est prévu un dispositif (26) pour le réglage en hauteur de cette portion de soutènement (24).
PCT/EP1992/002262 1991-10-26 1992-09-30 Chaise, notamment chaise de bureau WO1993007782A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92920379A EP0609251A1 (fr) 1991-10-26 1992-09-30 Chaise, notamment chaise de bureau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9113321U DE9113321U1 (fr) 1991-10-26 1991-10-26
DEG9113321.1U 1991-10-26

Publications (1)

Publication Number Publication Date
WO1993007782A1 true WO1993007782A1 (fr) 1993-04-29

Family

ID=6872634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/002262 WO1993007782A1 (fr) 1991-10-26 1992-09-30 Chaise, notamment chaise de bureau

Country Status (3)

Country Link
EP (1) EP0609251A1 (fr)
DE (1) DE9113321U1 (fr)
WO (1) WO1993007782A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999043237A1 (fr) * 1998-02-26 1999-09-02 Mercado Medic Ab Ameliorations concernant un accoudoir d'un fauteuil
US7134726B2 (en) * 2002-10-31 2006-11-14 Fabricación Asientos Vehículos Industriales, S.A. Armchair for public transport vehicles
US20160331142A1 (en) * 2015-03-16 2016-11-17 Aaron DeJule Sitting apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011016594B4 (de) * 2011-04-08 2016-03-10 Brunner Gmbh Sessel mit Armlehnen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH218028A (de) * 1939-12-01 1941-11-30 O Haberfeld Erwin Stuhl mit in der Höhe verstellbaren Armlehnen.
US4239282A (en) * 1978-12-18 1980-12-16 The Boeing Company Pilot seat
EP0309390A1 (fr) * 1987-09-14 1989-03-29 Equus Marketing Ag Chaise, notamment chaise de travail, avec accoudoirs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH218028A (de) * 1939-12-01 1941-11-30 O Haberfeld Erwin Stuhl mit in der Höhe verstellbaren Armlehnen.
US4239282A (en) * 1978-12-18 1980-12-16 The Boeing Company Pilot seat
EP0309390A1 (fr) * 1987-09-14 1989-03-29 Equus Marketing Ag Chaise, notamment chaise de travail, avec accoudoirs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999043237A1 (fr) * 1998-02-26 1999-09-02 Mercado Medic Ab Ameliorations concernant un accoudoir d'un fauteuil
US7134726B2 (en) * 2002-10-31 2006-11-14 Fabricación Asientos Vehículos Industriales, S.A. Armchair for public transport vehicles
US20160331142A1 (en) * 2015-03-16 2016-11-17 Aaron DeJule Sitting apparatus
US9844268B2 (en) * 2015-03-16 2017-12-19 Aaron DeJule Sitting apparatus

Also Published As

Publication number Publication date
EP0609251A1 (fr) 1994-08-10
DE9113321U1 (fr) 1993-02-25

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