CA2364360A1 - Chair, especially an office swivel chair - Google Patents

Chair, especially an office swivel chair Download PDF

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Publication number
CA2364360A1
CA2364360A1 CA002364360A CA2364360A CA2364360A1 CA 2364360 A1 CA2364360 A1 CA 2364360A1 CA 002364360 A CA002364360 A CA 002364360A CA 2364360 A CA2364360 A CA 2364360A CA 2364360 A1 CA2364360 A1 CA 2364360A1
Authority
CA
Canada
Prior art keywords
guide
chair
arm
rest
back rest
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.)
Abandoned
Application number
CA002364360A
Other languages
French (fr)
Inventor
Klaus Franck
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.)
SATO-OFFICE FURNITURE MANUFACTURES SA
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2364360A1 publication Critical patent/CA2364360A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/402Support for the head or the back for the back adjustable in height
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction

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

Abstract

The invention relates to a chair (1), in particular a swiveling office chair, having a seat bearer (2) attached to a central chair column (20) or to a plurality of chair legs, having a seat top (3) held by the seat bearer (2), having a back rest (4) that is height-adjustable relative to the seat top (3) and having two lateral arm rests (5) that are height-adjustable relative to the seat top (3).
The new chair is characterized in that it comprises two lateral guide profiles (6) that extend from the seat bearer (2) or from the seat top (3) and that run upwards, and in that each guide profile (6) contains a back rest guide (64) and an arm rest guide (65).

Description

Specification:
Chair, in particular swiveling office chair The present invention relates to a chair, in particular a swiveling once chair, having a seat bearer attached to a central chair column or to a plurality of chair legs, having a seat top held by the seat bearer, having a back rest that is height-adjustable relative to the seat top and having two lateral arm rests that are height-adjustable relative to the seat top.
In previously known chairs of the type named above, it is standard to mount and guide the back rest in its center region in order to enable height adjustment, and so that only a single guide is required therefor. For the arm rests, it is standard to provide a separate linear guide for each, or to effect the height adjustability through a pivoting about a pivot axis. In these known chairs, it is regarded as disadvantageous that at least three guides or equivalent displacement mechanisms are required for the height adjustment of the back rest and of the two arm rests, which leads to a correspondingly high constructive expense and a correspondingly large number of individual parts, with the increased assembly cost connected therewith.
The object of the present invention is therefore to create a chair of the type named above that avoids the described disadvantages, and in which in particular the height adjustability of the back rest and the arm rests is enabled with a lower constructive expense, without sacrificing the functionality and the appearance of the chair.
This object is achieved according to the invention by a chair of the type named above that is characterized in that it comprises two lateral guide profiles that extend from the seat bearer or from the seat top and that nm upwards, and in that each guide profile contains a back rest guide and an arm rest guide.
In the inventive chair, the number of guide profiles required is advantageously reduced to only two, whereby the two guide profiles guide and hold both the back rest and also the kwo arm rests in height-adjustable fashion. Since each guide profile contains both a back rest guide and also an arm rest guide, a mutually independ~t height adjustment of the back rest on the one hand and the arm rests on the other hand is ensured. At the same time, however, a reduction in the number of individual parts of the chair, and therefore a simpler and more economical manufacture, is achieved.
In addition, it is preferably provided that the back rest be constructed as a back shell that is provided at its lateral edges with guide elements that engage, in a guiding manner, with the back rest guide in the guide profiles. Due to the construction of the back rest as a back shell, this back rest is given a sufficiently large degree of inherent stability and an ergonomic shape, so that the guide elements can be attached to the lateral edges of the back rest unproblematically and in a sufficiently solid and secure fashion.
In addition, the invention provides that each arm rest is constructed with an essentially horizontal arm support and with an arm rest bearer that runs downward and/or towards the rear from this arm support, whereby the arm rest bearer is provided at its end facing away from the arm support with guide elements that engage, in guiding fashion, with the arm support guide in the appertaining guide profile. In this way, a construction of the arm rests is achieved that is on the one hand simple and is on the other hand stable, whereby, moreover, the orientation and height position correspond to the ergonomic requirements [or: demands]
of the user of the chair, and can easily be matched to these requirements.
It is preferably provided that the guide profiles ate hollow profiles containing, in their interior, the back rest guide in the rear region [of the interior] and, parallel thereto, the arm rest guide in the front region. This construction of the guide profiles achieves an attractive and smooth outer appearance of the guide profile, connected with a sufficiently high degree of stability for the acceptance of the occurrent forces. The hollow profiles can thereby be for example extruded profiles of light metal, which enables an economical manufacture together with a construction of the interior of the guide profiles corresponding to the above aims.
In order, given a simple construction, to enable the forces occurring at the back rest to be carned off into the guide profiles without damage, and in order to ensure a sufficiently large displacement path for the back rest, the guide elements provided on the back rest are preferably guide rods that can be displaced axially and fastened in the back rest guides.
With respect to the arm rests, it is preferably provided that each arm rest bearer engage with the guide profile through a profile slot, and that each arm rest bearer comprise, as a guide element, a foot that can be axially displaced and fastened in the arm rest guide. Since the load on the arm rests is lower than the load on the back rest, a foot claiming only a relatively small axial length inside the guide profile is sufficient as a guide element for the arm rest bearer.
In order to permit simple height adjustment of the back rest, and also reliable fixing of the back rest in a desired height position, stop means that can be fastened or released manually are preferably provided on at least one of the two guide profiles and/or on the back rest, for the height adjustment of the back rest andJor for a height adjustment of the seat.
In similar fashion, stop means that can be fastened or released manually are preferably provided on at least one of the two guide profiles or on the arm rests, for the height adjustment of the arm rests.
In order to increase the stability of the chair overall with as light [or:
simple] a construction as possible, and in order to make easier the manufacture of the chair, it is additionally preferably provided that the two guide profiles be combined to form a component that runs in a U shape as seen in a rear view of the chair, whose U-bend lies below the rear region of the seat top, and whose U arms, formed by the two guide profiles, point upwards.
Finally, a development of the last-specified construction of the chair proposes that this chair be equipped with a synchronizing mechanism that connects the seat bearer, the seat top, and the back rest with one another so that they are coupled in articulated fashion, and that the U-shaped component comprising the guide profiles be connected to the synchronizing mechanism in the area of the U-bend.
An exemplary embodiment of an inventive chair is specified below on the basis of a drawing.
The figures of the drawing show the following:
Figure 1 shows the essential parts of the chair in a side view, Figure 2 shows the chair finm Figure 1 in a back view, and Figure 3 shows one of the guide profiles provided on the chair in [...]
As is shown in Figure 1 of the drawing, the ex~nplary embodiment of a swiveling office chair 1 shown here comprises, as essential parts, a seat bearer 2, a seat top 3 attached thereon, a back rest 4, and two lateral arm rests 5. Because the ann rests 5 are here arranged so as to coincide, only the arm rest 5 turned towards the observer is visible. A
central chair column 20 extends downward from the underside of the seat bearer 2; said column is represented here only in small part and has, located at its lower end in a known fashion, a foot cross having rollers.
The seat bearer 2 and the seat top 3 are likewise of known construction.
From the rear region (i.e., the region at left in the drawing) of the seat bearer 2, two guide profiles 6 extend essentially vertically upward, said profiles running upward to the left and to the right next to the seat top 3. Since the two guide profiles in Figure 1 are located one behind the other, here only the right guide profile 6, turned towards the observer, of the chair 1 can be seen. The guide profiles 6 are used for the height-adjustable mounting and guiding both of the back rest 4 and also of the two arm rests 5. For this purpose, each guide profile, respectively fashioned as a hollow profile, comprises in its interior a respective back rest guide and an arm rest guide. The back rest 4 is constructed as a dimensionally stable back shell, and is connected at its two lateral edges 45 with a respective guide rod 46 that points downward. The guide rods 46 run in the back rest guide inside the guide profiles 6, and can be displaced therein in their axial direction, and can be stopped in the desired displacement positions. For this stopping, a respective stop knob 69 is provided at the lower end of each guide profile, said knob effecting or removing the stopping of the guide rods 46 according to its actuation. In order to avoid the risk of injury, a folding bellows 47 is attached between the upper end of each guide profile 6 and the back rest 4, respectively surrounding the associated guide rod, said bellows being variable in length and therefore adapting to each displacement of the back rest 4.
The arm rests 5 each comprise an essentially horizontally oriented arm support 50 as well as an arm rest bearer 51 nmning downward and towards the rear from the underside of the arm support 50. At its lower end pointing towards the rear, each arm rest bearer 51 has a foot 56 that is used as a guide element and that engages in guiding fashion with the guide profile 6.
For this propose, on the side pointing to the right in Figure 1 the guide profile 6 is constructed with a slot through which the arm rest bearer 51 engages into the interior of the guide profile G and into the arm rest guide 65 provided therein. The foot 56, and thereby the entire arm rest 5, can be displaced and stopped in the axial direction of the guide profile 6, whereby for the stopping or, respectively, the removal of the stopping a stop knob 59 is provided on the lower part of the arm rest bearer 51. The stop means for the height adjustment both of the back rest 4 and also of the arm rests 5 can thereby be of known type and construction.
The respective upper end position of back rest 4 and arm rests 5 is indicated in Figure 1 by solid lines; in contrast thereto, the respective lower end positions of back rest 4 and arm rests 5 are shown in broken lines. The back rest 4 and the arm rests 5 can thereby be displaced independent of one another and without hindering one another inside the guide profiles 6, and can be stopped in desired height positions.
Figure 2 of the drawing shows the chair 1 from Figure 1 in a back view, whereby in the lower part of Figure 2 the seat bearer 2, with the chair column 20 running downward therefrom, can again be seen. Here as well, the lower part of the chair column 24, with the foot cross provided there, is not shown.
At the far left and far right in Figure 2, the two guide profiles 6 can be seen, which, as Figure 2 shows clearly, are connected with one another to form a unified U-shaped component. For this purpose, a profile forming a U-bend 60, connected in its center region with the seat bearer 2, runs between the lower ends of the two guide profiles 6. The seat bearer 2 can be equipped with what is known as a synchronizing mechanism (not shown here in detail), that enables a pivoting of the seat top 3 with simultaneous pivoting of the back rest 4. The connection of the guide profiles 6 to this synchronizing mechanism thereby takes place via the U-bend 60, so that the mechanical conn~tion here is particularly simple.
At the upper end of each guide profile 6, a respective folding bellows 47 can again be seen, to which the side edges 45 of the back rest 4 are respectively connected in the upward direction.
In Figure 2, the back rest 4 is shown in its lower end position, so that here the folding bellows 47 are compressed. The guide rods 46, connected with the side edges 45, run through the folding bellows 47 into the guide profiles 6, and are guided in these in invisible fashion.
To the left and to the right of the two folding bellows 47, another part of the arm rests 5 with the arm support 50 and the arm rest bearer 51 can respectively be seen. The arm rests 5 engage with the guide profiles 6 at the side facing away from the observer in Figure 2.
Figure 3 shows one of the two guide profiles 6 in cross-section along the line III - III in Figure 1. The guide profile 6 is a hollow profile, for example an extruded aluminum profile.
In its interior it has two guides, namely a back rest guide 64 in its rear region (i.e., the region at left in Figure 3) and an arm rest guide 65 in its front region (i.e., the region at right in Figure 3). The guide rod 46 runs through the back rest guide 64, said guide rod also being shown here in section and being connected fixedly at its upper end with the side edge 45 of the back rest 4, as is shown in Figures 1 and 2.
The foot 56 is guided in the arm rest guide 65, said foot being connected with the arm rest bearer 51 through a profile slot 66 that points towards the front, i.e., to the right in Figure 3.
The foot 56 can be displaced, together with the other arm rest, in the axial direction of the guide profile 6 in the arm rest guide 65, and can be fixed in desired positions in order to adapt the height position of the arm rest S, or, respectively, its arm support 50, to the requirements of the respective user of the chair 1.
If the chair 1 is constructed without arm rests S, the profile slot 66 in the guide profile 6 can simply be sealed using a form-adapted covering, so that the overall optical impression of the guide profile 6 and of the chair 1 as a whole is not adversely affected. The chair 1 can thereby optionally be constructed with or without arm rests 5 without great expense.
In order to retrofit the chair 1 with arm rests 5, it is sufficient to detach the folding bellows 47 at its lower end and to push it upward; in this way the introduction of the foot 56 of the arm rest bearer 51 into the arm rest guide 65 from the top is then enabled.
Subsequently, the lower end of the folding bellows 47 must merely be attached again to the upper end of the guide profile 6 in order to make the chair ready for use.

Claims (10)

Claims
1. Chair (1), in particular swiveling office chair, having a seat bearer (2) attached to a central chair column (24) or to a plurality of chair legs, having a seat top (3) held by the seat bearer (2), having a back rest (4) that is height-adjustable relative to the seat top (3) and having two lateral arm rests (5) that are height-adjustable relative to the seat top (3), characterized in that the chair (1) comprises two lateral guide profiles (6) that extend from the seat bearer (2) or from the seat top (3) and that run upwards, and in that each guide profile (6) contains a back rest guide (64) and an arm rest guide (65).
2. Chair according to claim 1, characterized in that the back rest (4) is constructed as a back shell that is provided at its lateral edges (45) with guide elements (46) that engage in guiding fashion with the back rest guide (64) in the guide profiles (6).
3. Chair according to claim 1 or 2, characterized in that each arm rest (5) is constructed with an essentially horizontal arm support (50) and with an arm rest bearer (51) that runs downward and/or towards the rear from this arm support, whereby the arm rest bearer (51) is provided, at its end facing away from the arm support (50), with guide elements (56) that engage, in guiding fashion, with the arm support guide (65) in the appertaining guide profile (6).
4. Chair according to one of the preceding claims, characterized in that the guide profiles (6) are hollow profiles containing, in their interior, the back rest guide (64) in the rear region and, parallel thereto, the arm rest guide (65) in the front region.
5. Chair according to claim 4, characterized in that the guide elements (46) provided on the back rest (4) are guide rods that can be displaced axially and fastened in the back rest guides (64).
6. Chair according to claim 4 or 5, characterized in that each arm rest bearer (51) engages with the guide profile (6) through a profile slot, and each arm rest bearer comprises, as a guide element (56), a foot that can be axially displaced and fastened in the arm rest guide (65).
7. Chair according to one of the preceding claims, characterized in that stop means (69) that can be fastened or released manually are provided on at least one of the two guide profiles (6) and/or on the back rest (4), for the height adjustment of the back rest and/or for a height adjustment of the seat.
8. Chair according to one of the preceding claims, characterized in that stop means (59) that can be fastened or released manually are provided on at least one of the two guide profiles (6) or on the arm rests (5), for the height adjustment of the arm rests.
9. Chair according to one of the preceding claims, characterized in that the two guide profiles (6) are combined to form a component that runs in a U shape as seen in a rear view of the chair, whose U-bend (60) lies below the rear region of the seat top (3), and whose U arms, formed by the two guide profiles (6), point upwards.
10. Chair according to claim 9, characterized in that this chair is equipped with a synchronizing mechanism that connects the seat bearer (2), the seat top (3), and the back rest (4) with one another so that they are coupled in articulated fashion, and that the U-shaped component comprising the guide profiles (6) is connected to the synchronizing mechanism in the area of the U-bend (60).
CA002364360A 1999-07-13 2000-07-08 Chair, especially an office swivel chair Abandoned CA2364360A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19932558A DE19932558C2 (en) 1999-07-13 1999-07-13 Chair, in particular office swivel chair
DE19932558.8 1999-07-13
PCT/EP2000/006503 WO2001003548A1 (en) 1999-07-13 2000-07-08 Chair, especially an office swivel chair

Publications (1)

Publication Number Publication Date
CA2364360A1 true CA2364360A1 (en) 2001-01-18

Family

ID=7914520

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002364360A Abandoned CA2364360A1 (en) 1999-07-13 2000-07-08 Chair, especially an office swivel chair

Country Status (6)

Country Link
EP (1) EP1113739A1 (en)
AU (1) AU6822500A (en)
CA (1) CA2364360A1 (en)
DE (2) DE19932558C2 (en)
TR (1) TR200100729T1 (en)
WO (1) WO2001003548A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020123962A1 (en) 2020-07-08 2022-01-13 Atec International Team Co., Ltd. height adjustment device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118069A (en) * 1976-10-07 1978-10-03 George Taylor Hunter Frame arm joint structure for seat or chair structure
US5131721A (en) * 1990-12-28 1992-07-21 Tachi-S Co., Ltd. Framework of seat back with armrest
DE4317610C2 (en) * 1993-05-27 2002-04-11 Dauphin Friedrich W Gmbh Height-adjustable armrest for a chair
US5620233A (en) * 1995-06-07 1997-04-15 Jami, Inc. Adjusting mechanism for selectively positioning chair components
US6250715B1 (en) * 1998-01-21 2001-06-26 Herman Miller, Inc. Chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020123962A1 (en) 2020-07-08 2022-01-13 Atec International Team Co., Ltd. height adjustment device

Also Published As

Publication number Publication date
AU6822500A (en) 2001-01-30
TR200100729T1 (en) 2001-06-21
DE19932558C2 (en) 2001-06-13
WO2001003548A1 (en) 2001-01-18
EP1113739A1 (en) 2001-07-11
DE19932558A1 (en) 2001-03-01
DE10081903D2 (en) 2001-12-13

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