EP1287765A1 - Accoudoir mobile et siège ainsi équippé - Google Patents

Accoudoir mobile et siège ainsi équippé Download PDF

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Publication number
EP1287765A1
EP1287765A1 EP02078494A EP02078494A EP1287765A1 EP 1287765 A1 EP1287765 A1 EP 1287765A1 EP 02078494 A EP02078494 A EP 02078494A EP 02078494 A EP02078494 A EP 02078494A EP 1287765 A1 EP1287765 A1 EP 1287765A1
Authority
EP
European Patent Office
Prior art keywords
armrest
supporting part
support
seat
recess
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Withdrawn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
EP02078494A
Other languages
German (de)
English (en)
Inventor
Jeroen Hendrik Peter Theodoor Maas
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.)
BMA Ergonomics BV
Original Assignee
BMA Ergonomics BV
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 BMA Ergonomics BV filed Critical BMA Ergonomics BV
Publication of EP1287765A1 publication Critical patent/EP1287765A1/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Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to an armrest for a seat, in particular an office chair, comprising at least one support for connecting to a frame of the seat and at least one supporting part connected movably thereto.
  • an armrest is generally known.
  • Armrests form an important component in the design of a seat. They serve a dual role. On the one hand the armrests serve to support the weight of the arm and the shoulder so as to thus prevent this weight having to be supported by the back, which can result in an incorrect sitting posture. In addition, armrests serve to stabilize the arms, which have a relatively crude motor function, in performing movements using the wrists, hands and fingers, which have a considerably more refined motor function. This latter function is of particularly great importance when working with a keyboard or mouse, where the greater part of the operations must after all be carried out with the fingers or wrist.
  • armrests thus play a significant part in finding an optimum working posture, it is of great importance that they are as well adjustable as possible, so that any user of a seat can readily adapt the armrests to his or her wishes. In addition, it is important that the armrests provide a good support and are comfortable.
  • armrests are in any case height-adjustable. Armrests are also known which are adjustable in depth direction, i.e. toward and away from the backrest, usually in that they are slidable. Also known are armrests which are adjustable in transverse direction. This adjustability is then often achieved by sliding the support relative to the frame of the seat. Finally, armrests are known with a support which is pivotable around a standing axis, whereby the armrest is thus displaceable in transverse direction while the direction of the armrest can simultaneously be varied.
  • armrests are profiled and rounded to a greater or lesser extent.
  • armrests are often manufactured from, or covered with, a material which feels relatively soft or which really is soft, such as for instance a foam plastic. Such materials have the drawback of being not easy to process and moreover being vulnerable.
  • the invention now has for its object to provide an improved armrest of the above described type. According to a first aspect of the invention this is achieved in such an armrest in that the supporting part is slidable in at least two directions and pivotable about at least one axis. A larger number of adjustments options is hereby provided than is the case in known armrests.
  • the supporting part preferably defines a support plane and is slidable substantially parallel to the support plane, and the pivot axis is directed substantially perpendicularly of the support plane. In this manner the supporting part can be adjusted in length or depth direction and in width direction, while the orientation of the armrest can moreover be modified relative to the seat.
  • the sliding movement and the pivoting movement can advantageously be performed independently of each other herein.
  • a desired setting can thus be sought for each parameter without the already set values of other parameters thereby being lost.
  • the armrest preferably comprises means for bounding at least a part of the movement(s) of the supporting part.
  • the supporting part or the support comprises at least one protrusion which is received movably in a recess in the support or the supporting part, wherein the dimensions of the recess in the two sliding directions are greater than those of the protrusion received therein, and wherein the bounding means are formed by a peripheral edge of the recess.
  • the peripheral edge herein advantageously has a contour corresponding with the desired movement(s).
  • the armrest can be provided with means for blocking the supporting part in a determined position.
  • a robust and simple embodiment is achieved here when the blocking means are formed by co-acting surface parts of the supporting part and the support directed towards each other.
  • the support can for instance have at least one protruding projection and the supporting part a number of cavities co-acting therewith.
  • the cavities can herein be distributed over the supporting part in a particular pattern to enable blocking in a large number of positions.
  • the invention provides an armrest, the supporting part of which is relatively soft.
  • An optimal combination of support and comfort is hereby provided.
  • the supporting part herein takes a hollow form it can be resiliently movable, wherein air in the hollow space functions as resilient and damping medium. The resilience or softness can moreover then be adjusted as desired by at least partially filling the hollow space with another, preferably resiliently deformable medium.
  • the supporting part is advantageously formed from at least two segments, of which the segment directed outward during use is softer than the other segment, so that the armrest also feels soft.
  • an end of the supporting part directed toward the backrest of the seat is formed such that only a lower arm of the user is supported, and not his/her elbow.
  • This end can for instance be rounded for this purpose.
  • the invention also relates to a seat provided with a frame bearing at least one seat part and with at least one armrest of the type described here.
  • a seat (fig. 1) comprises a frame 2 on which a seat part 3 and a backrest 4 are mounted.
  • Frame 2 is carried by a mobile undercarriage 5.
  • Seat 1 is provided with the usual mechanisms for height and depth adjustment of seat part 3 and backrest 4.
  • Seat 1 also has two armrests 6 on either side of seat part 3.
  • Each armrest 6 is formed by a support 7 mounted on frame 2 of seat 1, and a supporting part 8 which is movably connected to support 7.
  • Each support 7 consists of an L-shaped lower part 9 and a reverse L-shaped upper part 10 which is height-adjustable relative to lower part 9.
  • Lower part 9 is in turn connected in conventional manner to frame 2 for adjustment in width direction.
  • Supporting part 8 defines a substantially horizontally directed support plane S (fig. 2) and in the shown embodiment is slidable substantially parallel to this support plane S in two directions D and W for adjusting the desired depth respectively the desired width of supporting part 8 of armrest 6.
  • supporting part 8 is pivotable as according to arrow R about an axis directed transversely of support plane S. An optimum adjustability of armrest 6 is achieved by thus embodying supporting part 8 for movement in multiple directions relative to support 7.
  • support 7 is provided for this purpose with a protrusion 11 which is received for movement in different ways in a recess 12 in supporting part 8.
  • the dimensions of recess 12 in directions D and W are greater than those of protrusion 11, so that protrusion 11 can be displaced in the recess in these directions, and can moreover be rotated.
  • the different movements are bounded by a peripheral edge 13 of recess 12 with which the protrusion 11 comes into contact. The contour of peripheral edge 13 thus defines the possible patterns of movement of supporting part 8 relative to support 7.
  • Protrusion 11 herein takes the form of a toadstool with a stem 14 and a corresponding cap 15.
  • Recess 12 has a comparatively smaller surface area 12S in the vicinity of support 7 and a larger surface area 12W at a greater distance from the support, and therefore has in fact a narrowed opening.
  • the largest dimension inside peripheral edge 13S of this narrowed portion is herein smaller than the largest dimension of cap 15 of protrusion 11, so that protrusion 11 is enclosed in recess 12.
  • the possible movements of supporting part 8 are then defined on the one hand by the outer periphery of cap 15 in combination with the contour of peripheral edge 13L of the large portion of recess 12 and on the other by the outer periphery of stem 14 and peripheral edge 13S of the narrowed portion of the recess.
  • the inner step 13S of the peripheral edge is herein practically right-angled, while outer step 13L, cap 15 and stem 14, which is defined by two screw sleeves 16, have an oval or elliptical form.
  • armrest 6 retains a position, once it has been set, until these settings are consciously changed.
  • Present for this purpose are means for blocking supporting part 8 in a determined position relative to support 7. These blocking means are formed here by projections 17 on the surface 19 of support 7 directed toward supporting part 8, and cavities 18 co-acting therewith in the surface 32 of supporting part 8 directed toward support 7.
  • biasing means 20 are provided. These biasing means 20 are formed here by a compression spring arranged between the underside of the cap 15 of protrusion 11 and a surface 21 between the two peripheral edges 13S, 13L.
  • Cavities 18 of the blocking means can be formed in a determined pattern in surface 32, for instance in rows (in width direction W) and columns (in length or depth direction D) (fig. 6), and can be mutually separated by standing edges 33.
  • supporting part 8 takes a divided form, while protrusion 11 is embodied as a component mounted separately on support 7.
  • Supporting part 8 comprises a lower cap 22, which is directed toward support 7 and bears peripheral edges 13S, 13L, as well as an upper cap 23 which is connected releasably thereto and defines the actual support plane S.
  • Upper cap 23 is here fixed to lower cap 22 by means of mutually engaging hook parts 24, 25 and screws which are rotated from the underside through openings 26, 27 into lower cap 22 and into upper cap 23.
  • the armrest 6 It is of great importance for the comfort of the armrest 6 that it feels relatively soft and is moreover resiliently deformable.
  • at least that part of supporting part 8 which defines the actual support plane S is manufactured from a plastic with a comfortable feel.
  • the upper cap 23 likewise takes a divided form, wherein a hollow space 28 is left clear between the lower and upper part 29, 30 of upper cap 23. In the simplest embodiment air will be enclosed in this hollow space, although it is also possible here to include another medium therein.
  • Both parts 29, 30 are herein formed by injection moulding and mutually connected by a hermetically sealed, all-around connecting edge 31, which can likewise be formed by injection moulding.
  • armrest 6 is further enhanced by the design thereof.
  • the end directed toward backrest 4 is rounded such that the lower arm of a user rests on armrest 6, but not his/her elbow. This results in a more comfortable support of the arm.
  • the invention thus provides an armrest which is readily adjustable in many ways, retains a position, once set, in both unloaded and loaded state, and which can be manufactured comparatively quickly with simple means and at low cost.
  • the supporting part could thus execute movements relative to the support other than the described sliding and pivoting movements.
  • the positions of the protrusion and the recess could also be reversed, while these components could also be embodied with a constant surface area instead of in stepped form.
  • other variants of the blocking means can be envisaged, while the construction of for instance the supporting part or the upper cap thereof can also be modified. The invention is therefore defined solely by the appended claims.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
EP02078494A 2001-08-24 2002-08-23 Accoudoir mobile et siège ainsi équippé Withdrawn EP1287765A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1018820 2001-08-24
NL1018820A NL1018820C2 (nl) 2001-08-24 2001-08-24 Beweegbare armlegger en daarmee uitgeruste stoel.

Publications (1)

Publication Number Publication Date
EP1287765A1 true EP1287765A1 (fr) 2003-03-05

Family

ID=19773918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02078494A Withdrawn EP1287765A1 (fr) 2001-08-24 2002-08-23 Accoudoir mobile et siège ainsi équippé

Country Status (2)

Country Link
EP (1) EP1287765A1 (fr)
NL (1) NL1018820C2 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7234779B2 (en) 2005-04-08 2007-06-26 Steelcase Development Corporation Armrest with height adjustment mechanism
USD703988S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
USD703987S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
USD704487S1 (en) 2013-06-07 2014-05-13 Steelcase Inc. Chair
USD706547S1 (en) 2013-06-07 2014-06-10 Steelcase Inc. Chair
USD707976S1 (en) 2013-06-07 2014-07-01 Steelcase Inc. Chair
USD721529S1 (en) 2013-06-07 2015-01-27 Steelcase Inc. Handle apparatus
US8967724B2 (en) 2012-09-20 2015-03-03 Steelcase Inc. Chair arm assembly
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999027820A1 (fr) * 1997-12-03 1999-06-10 Steelcase Inc. Accoudoir reglable pour fauteuil
US5927811A (en) * 1998-02-27 1999-07-27 Shin Yen Enterprise Co., Ltd. Adjustable chair-armrest assembly
US6017091A (en) * 1999-03-04 2000-01-25 Cao; Zi-Wen Adjustable armrest assembly
EP1044634A1 (fr) * 1999-04-12 2000-10-18 Sdm Hansen Ag Accoudoir pour chaise

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999027820A1 (fr) * 1997-12-03 1999-06-10 Steelcase Inc. Accoudoir reglable pour fauteuil
US5927811A (en) * 1998-02-27 1999-07-27 Shin Yen Enterprise Co., Ltd. Adjustable chair-armrest assembly
US6017091A (en) * 1999-03-04 2000-01-25 Cao; Zi-Wen Adjustable armrest assembly
EP1044634A1 (fr) * 1999-04-12 2000-10-18 Sdm Hansen Ag Accoudoir pour chaise

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7341313B2 (en) 2005-04-08 2008-03-11 Steelcase Development Corporation Adjustable armrest with motion control
US7234779B2 (en) 2005-04-08 2007-06-26 Steelcase Development Corporation Armrest with height adjustment mechanism
US9028001B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Chair arm assembly
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US10835041B2 (en) 2012-09-20 2020-11-17 Steelcase Inc. Chair arm assembly
US10213019B2 (en) 2012-09-20 2019-02-26 Steelcase Inc. Chair arm assembly
US9872565B2 (en) 2012-09-20 2018-01-23 Steelcase Inc. Chair arm assembly
US9427085B2 (en) 2012-09-20 2016-08-30 Steelcase Inc. Chair arm assembly
US8967724B2 (en) 2012-09-20 2015-03-03 Steelcase Inc. Chair arm assembly
USD703987S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
USD721529S1 (en) 2013-06-07 2015-01-27 Steelcase Inc. Handle apparatus
USD707976S1 (en) 2013-06-07 2014-07-01 Steelcase Inc. Chair
USD706547S1 (en) 2013-06-07 2014-06-10 Steelcase Inc. Chair
USD704487S1 (en) 2013-06-07 2014-05-13 Steelcase Inc. Chair
USD703988S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair

Also Published As

Publication number Publication date
NL1018820C2 (nl) 2003-02-25

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