EP3090656A1 - Armrest, in particular for office chairs - Google Patents

Armrest, in particular for office chairs Download PDF

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Publication number
EP3090656A1
EP3090656A1 EP16167967.5A EP16167967A EP3090656A1 EP 3090656 A1 EP3090656 A1 EP 3090656A1 EP 16167967 A EP16167967 A EP 16167967A EP 3090656 A1 EP3090656 A1 EP 3090656A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
slots
armrest
bracket
lateral surface
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.)
Granted
Application number
EP16167967.5A
Other languages
German (de)
French (fr)
Other versions
EP3090656B1 (en
Inventor
Stefano Serena
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.)
BRADO SpA
Original Assignee
BRADO 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 BRADO SpA filed Critical BRADO SpA
Publication of EP3090656A1 publication Critical patent/EP3090656A1/en
Application granted granted Critical
Publication of EP3090656B1 publication Critical patent/EP3090656B1/en
Active 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
    • 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

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 arm connected to the support structure of the chair seating portion and with the upper end of the vertical arm connected to a pad on which the user's arm rests.
  • CN 2011 948 441 U describes an armrest provided with a pushbutton 90 having one end engaged in the lateral surface of the sleeve and the other end provided with an appendix selectively engagable with one of the teeth of a rack provided in an L-shaped bracket.
  • a coil spring 84 maintains the end of the pushbutton 90 engaged in the rack and returns it to this configuration when pressed to adjust the tube height.
  • An object of the invention is to eliminate all these drawbacks by providing an armrest which can be assembled rapidly without the use of tools.
  • the armrest according to the invention is made of plastic material and comprises an L-shaped bracket 2 with its vertical part 4 of rectangular cross-section and its horizontal part 6 engagable in the support structure of the seating portion.
  • a plurality of horizontal parallel slots 10 are provided in a lateral wall 8 of the vertical part 4 of the bracket 2 and are connected together by a continuous vertical slot 12.
  • Said surface is also provided with two slits 14 which define two flexible tabs 16.
  • the vertical part 4 of the bracket 2 is slidably inserted into a corresponding tubular sleeve 18, the upper end of which is rigid with a pad 20.
  • One, 22, of the larger lateral surfaces of the sleeve is provided with two ribs 24, which define a longitudinal cavity 26, one end of which is provided with a seat 28.
  • a substantially square aperture 30 is provided in the sleeve surface.
  • the invention also comprises a lever-shaped push-element 32 which presents at one end a reduced-thickness step 34 insertable into the seat 28, an intermediate rib 36 which rests on the surface of the cavity 26 to form a fulcrum for the push-element, and at its other end 38 is inclined oppositely to the intermediate rib 36 and bent at 90° into two T-shaped appendices 40.
  • the heads 42 and the shank 44 of the appendices 40 are of a size and shape suitable for insertion into two horizontal adjacent slots 10 and into as vertical slot 12, respectively, of the wall 6 of the bracket 2.
  • the shank 44 deflects the two tabs 16 to then engage in the slot 12.
  • the press-element 32 has merely to be pressed at its end 38 so as to cause this end 38, by virtue of its material elasticity, to rotate relative to the intermediate appendix 36 on the sleeve lateral surface, such as to disengage the heads 40 from the slots 10 and be able to slide the sleeve relative to the bracket (see Figures 5 and 6 ).
  • the edges of the lateral wall 8' facing the wall 8 of the vertical part 4 of the bracket are provided with two seats 46 provided with pegs 48 engaging in holes 50 provided in elastic strips 52 housed in the seats 46.
  • This embodiment has the advantage of a reduction in slack when the bracket is inserted into the sleeve.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)

Abstract

An armrest for office chairs, comprising an L-shaped tubular bracket (2) with the horizontal part (6) engagable in the support structure of the seating portion, a tubular sleeve (18) provided upperly with a pad (20), said tubular sleeve being slidable relative to the vertical part (4) of said L-shaped bracket, characterised in that:
- a lateral surface (8) of the vertical part (4) of the L-shaped bracket (2) is provided with a plurality of horizontal parallel slots (10) connected together by a vertical slot (12),
- a lateral surface (22) of the tubular sleeve is provided with an aperture (30) able to selectively face said slots (10),

and characterised by comprising a lever-type push-element (32) having one end (34) inserted into a seat (28) provided in the outer lateral surface of the sleeve (18), an intermediate transverse rib (36) which rests on the outer surface of the sleeve and forms the fulcrum for the push-element (32), and its other end (38) provided with an appendix (40) inserted into the aperture (30) and engaged, when in the rest configuration, in one of the slots (10) and disengagable therefrom by pressing on said end (38) within the sleeve.

Description

  • 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 arm connected to the support structure of the chair seating portion and with the upper end of the vertical arm connected to a pad on which the user's arm rests.
  • These known armrests are generally provided with an element for adjusting the position of the top of the pad relative to the upper surface of the seating portion, to satisfy the most varied ergonomic requirements of the user.
  • These known armrests present however the drawback of consisting of an assemblage of a large number of small metal and plastic parts with the inconvenience of having to use tools and specialized labour for their assembly.
  • CN 2011 948 441 U describes an armrest provided with a pushbutton 90 having one end engaged in the lateral surface of the sleeve and the other end provided with an appendix selectively engagable with one of the teeth of a rack provided in an L-shaped bracket. A coil spring 84 maintains the end of the pushbutton 90 engaged in the rack and returns it to this configuration when pressed to adjust the tube height.
  • An object of the invention is to eliminate all these drawbacks by providing an armrest which can be assembled rapidly without the use of tools.
  • This object is attained according to the invention by an armrest, in particular for office chairs, as described in claim 1.
  • The present invention is further clarified hereinafter with reference to the accompanying drawings, in which:
    • Figure 1
    is an exploded perspective view showing an armrest according to the invention,
    Figure 2
    is a perspective view thereof seen from below,
    Figure 3
    is a partial longitudinal section therethrough in the configuration in which the armrest is locked,
    Figure 4
    is a cross-section therethrough,
    Figure 5
    shows it in the same view as Figure 3, but in the configuration in which the armrest is released,
    Figure 6
    is a cross-section therethrough,
    Figure 7
    is an exploded perspective partial view showing a modified embodiment of a bracket, and
    Figure 8
    shows this latter assembled.
  • As can be seen from the figures, the armrest according to the invention is made of plastic material and comprises an L-shaped bracket 2 with its vertical part 4 of rectangular cross-section and its horizontal part 6 engagable in the support structure of the seating portion.
  • A plurality of horizontal parallel slots 10 are provided in a lateral wall 8 of the vertical part 4 of the bracket 2 and are connected together by a continuous vertical slot 12.
  • Said surface is also provided with two slits 14 which define two flexible tabs 16.
  • The vertical part 4 of the bracket 2 is slidably inserted into a corresponding tubular sleeve 18, the upper end of which is rigid with a pad 20.
  • One, 22, of the larger lateral surfaces of the sleeve is provided with two ribs 24, which define a longitudinal cavity 26, one end of which is provided with a seat 28.
  • At the other end of the cavity 26, a substantially square aperture 30 is provided in the sleeve surface.
  • The invention also comprises a lever-shaped push-element 32 which presents at one end a reduced-thickness step 34 insertable into the seat 28, an intermediate rib 36 which rests on the surface of the cavity 26 to form a fulcrum for the push-element, and at its other end 38 is inclined oppositely to the intermediate rib 36 and bent at 90° into two T-shaped appendices 40.
  • In particular, the heads 42 and the shank 44 of the appendices 40 are of a size and shape suitable for insertion into two horizontal adjacent slots 10 and into as vertical slot 12, respectively, of the wall 6 of the bracket 2.
  • To assemble the armrest, the procedure is as follows:
    • after inserting the reduced-thickness step 34 into the seat 28 and inserting the end 38 into the aperture 30, the push-element 32 is pushed right down so that it rotates on the intermediate appendix 36, and the upper part of the bracket 2 is inserted into the bottom of the sleeve 18.
  • During this insertion, the shank 44 deflects the two tabs 16 to then engage in the slot 12.
  • When the push-element is released, the heads 42 of the appendices 40 become inserted into two of the horizontal slots 10, to again prevent axial sliding of the sleeve relative to the bracket (see Figures 3 and 4).
  • To adjust the height of the pad 20, the press-element 32 has merely to be pressed at its end 38 so as to cause this end 38, by virtue of its material elasticity, to rotate relative to the intermediate appendix 36 on the sleeve lateral surface, such as to disengage the heads 40 from the slots 10 and be able to slide the sleeve relative to the bracket (see Figures 5 and 6).
  • When the desired adjustment has been achieved, the end 38 of the push-element 32 is released such that the elastic reaction of the previously stressed material causes the heads 40 to again engage in the slots 10.
  • In the embodiment illustrated in Figures 7 and 8, the edges of the lateral wall 8' facing the wall 8 of the vertical part 4 of the bracket are provided with two seats 46 provided with pegs 48 engaging in holes 50 provided in elastic strips 52 housed in the seats 46.
  • This embodiment has the advantage of a reduction in slack when the bracket is inserted into the sleeve.

Claims (3)

  1. An armrest for office chairs, comprising an L-shaped tubular bracket (2) with the horizontal part (6) engagable in the support structure of the seating portion, a tubular sleeve (18) provided upperly with a pad (20), said tubular sleeve being slidable relative to the vertical part (4) of said L-shaped bracket, characterised in that:
    - a lateral surface (8) of the vertical part (4) of the L-shaped bracket (2) is provided with a plurality of horizontal parallel slots (10) connected together by a vertical slot (12),
    - a lateral surface (22) of the tubular sleeve is provided with an aperture (30) able to selectively face said slots (10),
    and characterised by comprising a lever-type push-element (32) having one end (34) inserted into a seat (28) provided in the outer lateral surface of the sleeve (18), an intermediate transverse rib (36) which rests on the outer surface of the sleeve and forms the fulcrum for the push-element (32), and its other end (38) provided with an appendix (40) inserted into the aperture (30) and engaged, when in the rest configuration, in one of the slots (10) and disengagable therefrom by pressing on said end (38) within the sleeve.
  2. An armrest as claimed in claim 1, characterised in that each appendix consists of a T-shaped appendix, the head (42) and shank (44) of which have a size and shape corresponding to that of the slots (10) and of the slot (12), respectively.
  3. An armrest as claimed in claim 1, characterised in that the edges of that lateral wall (8') facing the wall (8) of the vertical part (4) of the bracket (2) are provided with two seats (46) provided with pegs (48) in holes (50) provided in elastic strips (52) housed in the seats (46).
EP16167967.5A 2015-05-05 2016-05-02 Armrest, in particular for office chairs Active EP3090656B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVE20150021 2015-05-05

Publications (2)

Publication Number Publication Date
EP3090656A1 true EP3090656A1 (en) 2016-11-09
EP3090656B1 EP3090656B1 (en) 2018-05-23

Family

ID=53765486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16167967.5A Active EP3090656B1 (en) 2015-05-05 2016-05-02 Armrest, in particular for office chairs

Country Status (1)

Country Link
EP (1) EP3090656B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6837545B1 (en) * 2003-09-22 2005-01-04 Hsueh Yu Ho Chair arm with an adjustable height
US20050093358A1 (en) * 2003-10-29 2005-05-05 Leggett & Platt, Ltd. Height-adjustment mechanism for an armrest
CN201948441U (en) 2010-11-09 2011-08-31 广力达企业有限公司 Height adjusting device for chair armrest

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6837545B1 (en) * 2003-09-22 2005-01-04 Hsueh Yu Ho Chair arm with an adjustable height
US20050093358A1 (en) * 2003-10-29 2005-05-05 Leggett & Platt, Ltd. Height-adjustment mechanism for an armrest
CN201948441U (en) 2010-11-09 2011-08-31 广力达企业有限公司 Height adjusting device for chair armrest

Also Published As

Publication number Publication date
EP3090656B1 (en) 2018-05-23

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