WO2013113610A1 - Armrest, in particular for office chairs - Google Patents

Armrest, in particular for office chairs Download PDF

Info

Publication number
WO2013113610A1
WO2013113610A1 PCT/EP2013/051320 EP2013051320W WO2013113610A1 WO 2013113610 A1 WO2013113610 A1 WO 2013113610A1 EP 2013051320 W EP2013051320 W EP 2013051320W WO 2013113610 A1 WO2013113610 A1 WO 2013113610A1
Authority
WO
WIPO (PCT)
Prior art keywords
armrest
tube
plate
pad
bracket
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.)
Ceased
Application number
PCT/EP2013/051320
Other languages
French (fr)
Inventor
Claudio Gorgi
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.)
Imarc SpA
Original Assignee
Imarc SpA
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 Imarc SpA filed Critical Imarc SpA
Priority to BR112014016243A priority Critical patent/BR112014016243A8/en
Priority to ES13706439.0T priority patent/ES2561414T3/en
Priority to EP13706439.0A priority patent/EP2809202B1/en
Priority to PL13706439T priority patent/PL2809202T3/en
Priority to CN201380007042.1A priority patent/CN104080369B/en
Priority to US14/365,630 priority patent/US9345333B2/en
Publication of WO2013113610A1 publication Critical patent/WO2013113610A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • A47C1/022—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
    • 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
    • A47C1/0303—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • A47C1/0305—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by 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
    • A47C1/022—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
    • A47C1/0307—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in horizontal direction
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/54—Supports for the arms

Definitions

  • the present invention relates to an armrest, in particular for office chairs.
  • Armrests consisting of a substantially L-shaped support bracket with the end of the horizontal part connected to the chair frame and the upper end of the vertical part carrying a pad on which the user's arm rests.
  • said elements enable the following to be adjusted:
  • US 6 974 190 B1 discloses an armrest including a steam and a sleeve defining a cavity, with the steam being movable relative to the steam.
  • An object of the invention is to provide an armrest which can be assembled rapidly without the use of tools.
  • Figure 1 is a perspective view of a chair provided with the armrest according to the invention
  • Figure 2 shows the assembly of the first component of the armrest with the insertion-fitting of the plug into the bracket
  • Figures 3 and 4 are exploded perspective views showing the assembly of the second component of the armrest with application of the pad to the plate by interposing the armrest flange,
  • Figure 5 is a perspective view showing the final mou nting of the second component onto the first
  • Figure 6 is a long itudinal section through the armrest according to the invention.
  • the armrest 2 accord ing to the invention is applied to the support structure for the seating portion 4 of a chair, in particular an office chair.
  • Th e box 6 is fixed on the underside of the structure to house the swivel mechan ism provided with trad itional members 8 and in wh ich the column of a gas spring 1 0 engages, which at its other end is supported by a spoked base 12 provided with wheels 14.
  • the armrest comprises a tubular L-shaped bracket 16 with its horizontal part 1 8 comprising a slotted hole 20 for the insertion of a screw 22 anchored to the seating portion support structure, enabling the distance of the armrest from the seating portion to be adjusted.
  • the vertical part 24 of the bracket houses internally a plug 26 provided with a plurality of slots 28.
  • the insertion-fitting of the plug 26 into the vertical part 24 is stabilized by the inner part of toothed strips 30 projecting into the interior of th e cav ity of th e verti ca l pa rt 24 of th e b rac ket 1 6 a nd e ng ag i n g i n corresponding notches 32 provided in the plug.
  • the vertical part 24 of the bracket 16 with the plug 26 applied to it is slidingly inserted into a tube 34 with the upper end provided with a flange 36 consisting of a lower circumferential band 38 and an upper elliptical plate 40 the lower surface of which forms an abutment 42.
  • the limit stop to prevent total withdrawal of the tube 34 from the vertical part 24, is obtained by engagement between the outer portion 44 of the toothed strips 30 and corresponding seats 46 provided in the inner lateral surface of the tube.
  • the lateral surface of the tube also comprises a hole 48 the function of which is clarified hereinafter.
  • the upper surface of the plate 40 is provided with two semi-cylindrical seats 50 and has its perimetral edge provided with two diametrically opposite flexible ribs 52.
  • a locking element 54 inserted into the tube 34 consists of an arm 56 provided upperly with a pin 58 the ends of wh ich are housed in the sem i- cylindrical seats 50 of a pushbutton 60 which projects from the hole 48 in the tube, and provided lowerly with a tooth 62 which under the action of a spring 64 selectively engages one of the slots 28 of the plug 26, depending on the position of the tube 34 relative to the vertical part 24 of the bracket 16.
  • a plate 66 applied to the tube 34 from below comprises a circular hole 68 of diameter corresponding to that of the circumferential band 38 such that said plate rests on the abutment surface 42.
  • the circular hole 68 and the circumferential band 38 act as guides for the rotation of the plate 66 about the tube 34.
  • Sa id pl ate 66 is of su bsta ntial ly rectang u l ar sha pe in pl a n and presents internally two baffles 70 provided with a plurality of grooves 72 selectively cooperating with the flexible ribs 52 of the flange 36.
  • the lower surface of the longitudinal parallel edges of the plate 66 comprises two steps 74 engagable by two corresponding fillets 78 projecting lowerly from the lower surface of a pad 80.
  • the fil lets 78 converge inwards and consequently engage the two steps 74 of the plate 66 to securely retain the flange 40 interposed between them and hence retain the tube 34.
  • the lower surface 89 of the pad 80 retains, in the two semi-cylindrical seats 50 of the tube 34, the fulcrum pin 58 of the locking element 54.
  • edges of the plate 66 and the in ner su rface of the fil l ets 78 respectively comprise flexible teeth 88 and grooves 86, which ensure stepwise movement of the pad relative to the plate 66.
  • the armrest according to the invention is constructed without the need for tools by following a few particularly simple operations: - the first component is assembled by coupling the plug 26 to the bracket 1 6 as shown in Figure 2,
  • the second component is assembled by mounting the pad 80 on the plate 66 which has been previously mounted about the tube 34 and made to abut ag a i nst th e fl ange 36 , so cou pl ing to th e tu be 34 al l the i nterposed adjustment elements as shown in Figures 3 and 4,
  • the components can be assembled, stored and transported separately, to be coupled during the final stage of assembling the seating portion.
  • the arm of the invention is adjusted as follows:
  • this adjustment is achieved by sliding the pad 80 along the plate 66 with stepwise advancement given by the engagement between the flexible teeth 88 and the grooves 86.
  • this adjustment is achieved by rotating the pad 80 and the plate 66 connected thereto about the tube 34 and engaging the elastic ribs 52 stepwise in the grooves 72 of the plate 66.
  • this advantage is obtained of achieving an economical and reliable system with few components and with simplified assembly without tools.
  • the ease of assembly makes it possible to store and transport partially assembled products, so ach ieving important log istical and storage cost advantages.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)
  • Steps, Ramps, And Handrails (AREA)

Description

ARMREST, IN PARTICULAR FOR OFFICE CHAIRS.
The present invention relates to an armrest, in particular for office chairs.
Armrests are known consisting of a substantially L-shaped support bracket with the end of the horizontal part connected to the chair frame and the upper end of the vertical part carrying a pad on which the user's arm rests.
These known armrests are provided with a multiplicity of adjustment elements for satisfying the most varied ergonomic requirements of the user.
In particular, said elements enable the following to be adjusted:
- width: distance between the right pad and left pad of the chair,
- height: top of the pad from the upper surface of the seating portion,
- depth: distance of the pad from the back resting surface,
- angularity: pad orientation to the forearm.
These known armrests present however the drawback of consisting of an assemblage of a large number of small metal and plastic parts with the i nconven ience of h avi ng to use tool s and special ized l a bou r for the i r assembly.
Another drawback is the fact that these armrests, being totally factory assem bled , prove to be bu l ky prod ucts wh ich are d ifficu lt to store and transport, with consequent relative costs.
US 6 974 190 B1 discloses an armrest including a steam and a sleeve defining a cavity, with the steam being movable relative to the steam.
An object of the invention is to provide an armrest which can be assembled rapidly without the use of tools. These and other objects wh ich will be apparent from the ensu ing description are attained according to the invention by an armrest, in particular for office chairs, as described in claim 1 .
A preferred embodiment of the present invention is further clarified hereinafter with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a chair provided with the armrest according to the invention,
Figure 2 shows the assembly of the first component of the armrest with the insertion-fitting of the plug into the bracket,
Figures 3 and 4 are exploded perspective views showing the assembly of the second component of the armrest with application of the pad to the plate by interposing the armrest flange,
Figure 5 is a perspective view showing the final mou nting of the second component onto the first, and
Figure 6 is a long itudinal section through the armrest according to the invention.
As can be seen from the fig u res, the armrest 2 accord ing to the invention is applied to the support structure for the seating portion 4 of a chair, in particular an office chair.
Th e box 6 is fixed on the underside of the structure to house the swivel mechan ism provided with trad itional members 8 and in wh ich the column of a gas spring 1 0 engages, which at its other end is supported by a spoked base 12 provided with wheels 14.
In particular, the armrest comprises a tubular L-shaped bracket 16 with its horizontal part 1 8 comprising a slotted hole 20 for the insertion of a screw 22 anchored to the seating portion support structure, enabling the distance of the armrest from the seating portion to be adjusted.
The vertical part 24 of the bracket houses internally a plug 26 provided with a plurality of slots 28.
In particular, the insertion-fitting of the plug 26 into the vertical part 24 is stabilized by the inner part of toothed strips 30 projecting into the interior of th e cav ity of th e verti ca l pa rt 24 of th e b rac ket 1 6 a nd e ng ag i n g i n corresponding notches 32 provided in the plug.
The vertical part 24 of the bracket 16 with the plug 26 applied to it is slidingly inserted into a tube 34 with the upper end provided with a flange 36 consisting of a lower circumferential band 38 and an upper elliptical plate 40 the lower surface of which forms an abutment 42.
The limit stop, to prevent total withdrawal of the tube 34 from the vertical part 24, is obtained by engagement between the outer portion 44 of the toothed strips 30 and corresponding seats 46 provided in the inner lateral surface of the tube.
The lateral surface of the tube also comprises a hole 48 the function of which is clarified hereinafter.
The upper surface of the plate 40 is provided with two semi-cylindrical seats 50 and has its perimetral edge provided with two diametrically opposite flexible ribs 52.
A locking element 54 inserted into the tube 34 consists of an arm 56 provided upperly with a pin 58 the ends of wh ich are housed in the sem i- cylindrical seats 50 of a pushbutton 60 which projects from the hole 48 in the tube, and provided lowerly with a tooth 62 which under the action of a spring 64 selectively engages one of the slots 28 of the plug 26, depending on the position of the tube 34 relative to the vertical part 24 of the bracket 16.
A plate 66 applied to the tube 34 from below comprises a circular hole 68 of diameter corresponding to that of the circumferential band 38 such that said plate rests on the abutment surface 42. The circular hole 68 and the circumferential band 38 act as guides for the rotation of the plate 66 about the tube 34.
Sa id pl ate 66 is of su bsta ntial ly rectang u l ar sha pe in pl a n and presents internally two baffles 70 provided with a plurality of grooves 72 selectively cooperating with the flexible ribs 52 of the flange 36.
The lower surface of the longitudinal parallel edges of the plate 66 comprises two steps 74 engagable by two corresponding fillets 78 projecting lowerly from the lower surface of a pad 80.
The fil lets 78 converge inwards and consequently engage the two steps 74 of the plate 66 to securely retain the flange 40 interposed between them and hence retain the tube 34.
The lower surface 89 of the pad 80 retains, in the two semi-cylindrical seats 50 of the tube 34, the fulcrum pin 58 of the locking element 54.
The edges of the plate 66 and the in ner su rface of the fil l ets 78 respectively comprise flexible teeth 88 and grooves 86, which ensure stepwise movement of the pad relative to the plate 66.
Horizontal withdrawal of the pad 80 from said plate 66 is prevented by the presence of a l imit stops 84 and 85 provided respectively on the lateral sides of the plate 66 and on the inside of the fillets 78 of the pad 80.
The armrest according to the invention is constructed without the need for tools by following a few particularly simple operations: - the first component is assembled by coupling the plug 26 to the bracket 1 6 as shown in Figure 2,
- the second component is assembled by mounting the pad 80 on the plate 66 which has been previously mounted about the tube 34 and made to abut ag a i nst th e fl ange 36 , so cou pl ing to th e tu be 34 al l the i nterposed adjustment elements as shown in Figures 3 and 4,
- the two components are mounted by inserting the tube 34 into the bracket 16 as shown in Figure 5.
Given the extreme simplicity of these operations the components can be assembled, stored and transported separately, to be coupled during the final stage of assembling the seating portion.
The arm of the invention is adjusted as follows:
- width : the screws 22 are slackened and the L-shaped brackets 1 6 are slid along the slotted holes 20;
- height: to adjust the height the pushbutton 60 of the rod 54 is pushed to disengage the tooth 62 from the correspond ing slot 28 of the plug 26; In this manner the tube 34 can slide freely relative to the vertical part 24 of the bracket 1 6 u ntil , having reached the desired height, the pushbutton is released to cause the spring 64 to engage the tooth in the chosen slot 28 facing it.
- depth : this adjustment is achieved by sliding the pad 80 along the plate 66 with stepwise advancement given by the engagement between the flexible teeth 88 and the grooves 86.
- angularity: this adjustment is achieved by rotating the pad 80 and the plate 66 connected thereto about the tube 34 and engaging the elastic ribs 52 stepwise in the grooves 72 of the plate 66. In this manner the advantage is obtained of achieving an economical and reliable system with few components and with simplified assembly without tools. Moreover the ease of assembly makes it possible to store and transport partially assembled products, so ach ieving important log istical and storage cost advantages.

Claims

C L A I M S
1 . An armrest, in particular for office chairs, comprising a support bracket (16) connected to the chair, a tube (34) connected to the vertical part (24) of said bracket, and an arm support pad, characterised in that the tube presents at one end a flange (36) comprising rotation guides for a plate (66), said plate presenting an aperture (66) for the insertion of the lower end of the tube and being provided with rotation guides (38) cooperating with said flange (36) for the rotation of said plate (66) about said tube (34), said plate (66) and said pad (80) being constrained by mutually cooperating slide guides (74, 78) which enable said pad (80) to translate relative to said plate (66) with said flange (36) interposed between them.
2. An armrest as claimed in claim 1 , characterised in that at least one of said rotation guides for said flange (36) and for said plate (66) consists of a circular band.
3. An armrest as claimed in claim 1 , characterised in that said tube (34) slides along said bracket (16) and presents means (26, 28, 54, 60, 62, 64) for adjusting and locking its position.
4. An armrest as claimed in claim 1 , characterised in that said bracket is of L-shape with the vertical part (24) engaged in the tube (34) and the horizontal part (18) connected to the chair.
5. An armrest as claimed in claim 4, characterised in that said horizontal part (1 8) is provided with adjustment means (1 8) and locking means (20) for the distance of the armrests from the chair.
6. An armrest as claimed in claim 3, characterised in that sa id means comprise a plug (26) with the adjustment positions formed by holes (28) or teeth, said plug being insertion-mounted in said bracket (16).
7. An armrest as claimed in claim 3, characterised in that said locking means com prise an element (60, 62 , 64) elastically movable between a locking position and a release position, said element being hinged to the tube interposed between said pad (80) and said flange (36).
PCT/EP2013/051320 2012-02-01 2013-01-24 Armrest, in particular for office chairs Ceased WO2013113610A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BR112014016243A BR112014016243A8 (en) 2012-02-01 2013-01-24 armrest, in particular for use in office chairs
ES13706439.0T ES2561414T3 (en) 2012-02-01 2013-01-24 Armrests, particularly for office chairs
EP13706439.0A EP2809202B1 (en) 2012-02-01 2013-01-24 Armrest, in particular for office chairs
PL13706439T PL2809202T3 (en) 2012-02-01 2013-01-24 Armrest, in particular for office chairs
CN201380007042.1A CN104080369B (en) 2012-02-01 2013-01-24 Especially for armrests of office chairs
US14/365,630 US9345333B2 (en) 2012-02-01 2013-01-24 Armrest, in particular for office chairs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVE2012A000004 2012-02-01
IT000004A ITVE20120004A1 (en) 2012-02-01 2012-02-01 ARMREST, IN PARTICULAR FOR OFFICE CHAIRS.

Publications (1)

Publication Number Publication Date
WO2013113610A1 true WO2013113610A1 (en) 2013-08-08

Family

ID=46001584

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/051320 Ceased WO2013113610A1 (en) 2012-02-01 2013-01-24 Armrest, in particular for office chairs

Country Status (8)

Country Link
US (1) US9345333B2 (en)
EP (1) EP2809202B1 (en)
CN (1) CN104080369B (en)
BR (1) BR112014016243A8 (en)
ES (1) ES2561414T3 (en)
IT (1) ITVE20120004A1 (en)
PL (1) PL2809202T3 (en)
WO (1) WO2013113610A1 (en)

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US10021984B2 (en) 2015-04-13 2018-07-17 Steelcase Inc. Seating arrangement
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
IT201700036472A1 (en) * 2017-04-03 2018-10-03 Brado S P A ARMREST AXIAL TRAVELING DEVICE, IN PARTICULAR FOR OFFICE CHAIRS
US11083301B2 (en) 2018-06-01 2021-08-10 Steelcase Inc. Seating arrangement
USD891842S1 (en) 2018-06-04 2020-08-04 Steelcase Inc. Chair arm
USD888479S1 (en) 2018-06-04 2020-06-30 Steelcase Inc. Chair arm
ES3035683T3 (en) 2019-02-21 2025-09-08 Steelcase Inc Body support member
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
TWM597089U (en) * 2020-04-10 2020-06-21 謝文平 Lifting adjustable armrest structure
US11787063B2 (en) 2020-09-11 2023-10-17 Verb Surgical Inc. Linear lock and adjustable arm support system
US11622631B1 (en) * 2022-09-15 2023-04-11 Jay A. Berkowitz Apparatus and method for assembling a modular ergonomic chair without using fasteners
USD1053578S1 (en) * 2024-02-22 2024-12-10 Verona Sky International Trading Co., Limited Chair

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US7201450B1 (en) * 2006-08-01 2007-04-10 Su-Ming Chen Adjustable arm resting device for chair
US20110248543A1 (en) * 2010-04-13 2011-10-13 William Hitchcock Adjustable armrest

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US20060250018A1 (en) * 2005-05-04 2006-11-09 Tsai Ching T Multiple direction adjustment armrest
US7201450B1 (en) * 2006-08-01 2007-04-10 Su-Ming Chen Adjustable arm resting device for chair
US20110248543A1 (en) * 2010-04-13 2011-10-13 William Hitchcock Adjustable armrest

Also Published As

Publication number Publication date
US20140354026A1 (en) 2014-12-04
US9345333B2 (en) 2016-05-24
CN104080369A (en) 2014-10-01
BR112014016243A8 (en) 2017-07-04
EP2809202B1 (en) 2016-01-06
EP2809202A1 (en) 2014-12-10
ITVE20120004A1 (en) 2013-08-02
ES2561414T3 (en) 2016-02-26
BR112014016243A2 (en) 2017-06-13
PL2809202T3 (en) 2016-07-29
CN104080369B (en) 2017-10-10

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