EP0901762A1 - Dispositif de réglage pour chaises - Google Patents

Dispositif de réglage pour chaises Download PDF

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Publication number
EP0901762A1
EP0901762A1 EP97117020A EP97117020A EP0901762A1 EP 0901762 A1 EP0901762 A1 EP 0901762A1 EP 97117020 A EP97117020 A EP 97117020A EP 97117020 A EP97117020 A EP 97117020A EP 0901762 A1 EP0901762 A1 EP 0901762A1
Authority
EP
European Patent Office
Prior art keywords
control body
elements
portions
adjusting device
thick
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
EP97117020A
Other languages
German (de)
English (en)
Inventor
Anders Brunstad
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.)
Elano AS
Original Assignee
Elano AS
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 Elano AS filed Critical Elano AS
Publication of EP0901762A1 publication Critical patent/EP0901762A1/fr
Ceased 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
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination
    • A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination by means of a peg-and-notch or pawl-and-ratchet mechanism

Definitions

  • This invention relates to an adjusting device for chairs and the like, both as pieces of furniture and seats for vehicles and vessels as well as other similar pieces of furniture such as beds and the like where one movable part is hingedly or slideably connected with another part and provided with an adjusting device for setting the intended position of the movable part.
  • Such devices for adjusting parts of furniture pieces are known in multitude. Such devices generally include two elements, the one slideable relatively to the other and the one connected to a furniture or chair main frame or support, the other connected to the movable part of the chair or piece of furniture and a control means controlling the relative movement between the elements and thereby define the positions of the chair parts.
  • WO 87/02182 discloses one typical example of an adjusting device including two parts, one elongated part arranged to slide through a guiding part and a control means in the shape of a screw means attached to the guiding part, the screw means on rotating being arranged to either lockingly engage the elongated part or release the same for movement relatively to the guiding part.
  • US-A-4 607 883 discloses a device including one slotted tube connected to one chair part and a guide bar slidably received in the tube part and connected to another chair part.
  • the tube is provided with a sliding block arranged inside the tube and engaging the guide bar. The friction produced between the sliding block and the guide bar on relative movements between the tube and the guide bar controls the rate of movement and prevents sudden and un-intended movements between the chair parts.
  • UK-A 636 806 discloses a further arrangement including an adjusting device, wherein one elongated part secured to the chair frame is provided with a toothed rack and a runner connected to another part of the chair, viz. the back of the chair, is provided with a movable tooth co-operating with the toothed rack for stopping the relative movement at intended positions.
  • the tooth is movable by means of a Bowden cable attached to a handle secured at the arm rest of the chair against the force of a spring urging the tooth against the toothed rack.
  • EU-A-0 325 569 discloses still another adjusting device for chairs including a sleeve connected to the sub structure of the chair, a slide bar connected to a seat portion, movable relatively to the sub-structure thereof and slidably received in the sleeve, an adjustment device including at least one bore made in the slide bar and at least one spring biased pin and at least one hole in the sleeve for inserting the pin so that it reaches the bore of the slide bar thereby locking the slide bar and sleeve together in a position or positions defined by the position of the hole or holes.
  • a control handle or device In order to adjust known devices, but for the friction controlled ones, a control handle or device must be biased, e.g. by turning of a handle in order to move a threaded element into or out of engagement with a movable part, by swinging a lever in order to pull a pin outwardly out of engagement with a bore or the like or by swinging a tooth into an out of engagement with a toothed rack.
  • One aspect of this invention is to provide an adjustment device which irrespectively of occurring distortions at adjoining chair frame structure parts remains fully operable.
  • a further aspect is to provide an adjustment device, which can be manufactured in an easy way from inexpensive material.
  • Another aspect is to provide an adjustment device demanding an extremely short movement of a control body for releasing or securing the mutually movable parts to and from, respectively, each other.
  • Yet an aspect is to bring about an adjustment device in which the force necessary for releasing and locking the device elements is very low, and consequently requires minimum setting force at spring means and the like.
  • Still another aspect is to provide an adjustment device requiring no lubrication or service and which may be built into any appropriate section of a chair or the like piece of furniture.
  • the adjustment device includes two mutually displaceable telescoping elements, the outer one of which is a piece of tube as preferably also the inner one and a lining of low-friction tubing material provided between the outer and inner tube element.
  • the outer element has a guide means for a control body slidably arranged for movement essentially radially or normally relatively to the outer element tube and an opening in line with said guide means.
  • the inner element of the two coaxially arranged elements is provided with an aperture formed by a multitude of axially separated wide portions connected by intermediary narrow portions forming together a continuous elongated opening.
  • a first thick portion of the control body has a cross section adapted to fit into any of the wide portions of the continuous elongated aperture and axially separated therefrom a thin second portion adapted to fit into the narrow portions of the elongated aperture.
  • a typical chair to be provided with an adjustment device according to the invention includes a sub-structure or frame 1, which can have many different constructions.
  • the frame 1 includes two side sections, the upper parts thereof often connected to armrests 2 and having pivot points 3, normally bolt holes or the like, for pivot bolts or pins connected with and carrying the back rest 4 of the chair.
  • pivot points 3 normally bolt holes or the like, for pivot bolts or pins connected with and carrying the back rest 4 of the chair.
  • the back rest 4 At its lower edge the back rest 4 in turn is swingably connected to the rear portion of a seat 6 by means of hinge type connectors 7, which means that on swinging the back rest 4 around the pivot points 3, the seat 6 will move forwardly or rearwardly.
  • the seat 6 connected with the back rest 4 at 7 is also supported by pads or the like sliding surface portions 8 at the sub structure frame 1.
  • at least one, normally two adjustments devices 9 according to the invention are mounted between on the one hand the seat and back rest combination and on the other hand the sub structure frame 1.
  • the adjustment device 9 includes two element, viz. an outer pipe 10, at one end having a connector means 11 to be connected with a completing connector 11' at the seat 6 or the sub structure frame 1, and an inner pipe 12 having at its end opposite to the connector end of the outer pipe 10, a connector means 13 to be connected with a completing connector 13' at the sub-structure frame 1 or the seat 6.
  • a support bracket 2' is preferably connected withth fram 1 1 adjacent the connectors 11.
  • the outer and the inner pipes 10 and 12, respectively, are telescopically arranged and can, together, in dependence of the positions of the back rest 5 and seat 6 have different effective lengths.
  • a tube like lining 14 of insignificant thickness In order to reduce the friction and to prevent any noise there is between the two pipes 10 and 12, arranged a tube like lining 14 of insignificant thickness.
  • the purpose of the adjustment device 9 according to the invention is to enable the person wishing to alter or set a position of the back-rest and seat 5 to do this in an uncomplicated way.
  • the moving of the seat and back-rest can be done manually, by altering the position of the body sitting in the chair or even by means of power driven apparatuses.
  • a base part 17 preferably welded or otherwise secured to the pipe 10 and having a through bore 18 and an external thread 19.
  • the bore 18 is narrower than the recess 16, but they can also have identical cross section areas.
  • a cup 20 having an internal thread 21 at its open end an a central bore 21 at its opposite end, can be threaded onto the base part 17.
  • the control body proper 24 has at its inwardly directed end a thin portion 25 followed by a thick portion 26 and a cylindrical portion 27 adapted to the bore 18 of the plug element.
  • a collar 28 is secured at the body 24 outside the plug element 17 and a compression spring 29 is mounted between the collar 28 and the inside of the top end of the cup 20.
  • an elongated aperture 30 formed by a number of wide, essentially or nearly circular portions 31 at a distance from each other joined by narrow straight portions 32.
  • the row of wide and narrow portions forms the continuous slot like aperture, which preferably is milled by means of a CNC machine.
  • control body 24 In order to release the locked position, the control body 24 has to be pulled outwardly, preferably by means of a wire or the like attached to the end at 24 protruding from the cap 20 against the force of the spring 29 until the outer axial face 33 at the thick portion 26 engages the inner face of the base part 17. In that position the thick portion 26 is completely outside the wide portion 31 of the aperture but the thin portion 25 remains in line with the narrow straight portions, which means that the inner pipe 12 can be freely moved longitudinally relatively to the outer pipe 10 the length of the aperture and that the mutual positions of the two pipes, peripherally are kept intact as the thin portion 25 on displacing the pipes 10 and 12 axially acts as a guide by engaging and following the narrow portions 32 of the aperture.
  • Fig 5 shows another preferred embodiment where the control body has a conical thin portion 25' and a cylindrical thick portion 26'.
  • the conical portion 25' is intended to facilitate the movement from released position to locked position.
  • Fig. 4 discloses an embodiment, which icould be regarded as inverted when compared with the embodiment according to Fig 2.
  • the collar 28' is moved to an opposite position and the positions of the thin and thick portions 25'' and 26'', respectively, have been switched.
  • the thick portion 26'' is displaced inwardly into the interior of the pipe 12 whereas the thinn portion 25'', in co-operation with the narrow aperture portions 32 serves as a guide on axially displacing the pipes.
  • the specific design of the wider aperture portions in combination with the thick portion of the control body ensures a reduced contact surface pressure at the aperture edge portions defining the wider portions and consequently a reduced risk for upsetting or deforming said edge portions.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
EP97117020A 1997-09-09 1997-10-01 Dispositif de réglage pour chaises Ceased EP0901762A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703253A SE9703253D0 (sv) 1997-09-09 1997-09-09 Adjusting device for chairs
SE9703253 1997-09-09

Publications (1)

Publication Number Publication Date
EP0901762A1 true EP0901762A1 (fr) 1999-03-17

Family

ID=20408194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117020A Ceased EP0901762A1 (fr) 1997-09-09 1997-10-01 Dispositif de réglage pour chaises

Country Status (2)

Country Link
EP (1) EP0901762A1 (fr)
SE (1) SE9703253D0 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099460A (en) * 1935-05-29 1937-11-16 Heywood Wakefield Co Recliner mechanism for chairs
FR63647E (fr) * 1952-12-31 1955-09-30 Support articulé de siège et de dossier capable de prendre plusieurs positions dont l'une est oscillante
GB860760A (en) * 1957-07-02 1961-02-08 Harman Hunt Ltd J Improvements in or relating to chairs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099460A (en) * 1935-05-29 1937-11-16 Heywood Wakefield Co Recliner mechanism for chairs
FR63647E (fr) * 1952-12-31 1955-09-30 Support articulé de siège et de dossier capable de prendre plusieurs positions dont l'une est oscillante
GB860760A (en) * 1957-07-02 1961-02-08 Harman Hunt Ltd J Improvements in or relating to chairs

Also Published As

Publication number Publication date
SE9703253D0 (sv) 1997-09-09

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