EP0173615A1 - Vorrichtung für die Höhenverstellung einer Rückenlehne, insbesondere eines Bürositzes - Google Patents

Vorrichtung für die Höhenverstellung einer Rückenlehne, insbesondere eines Bürositzes Download PDF

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Publication number
EP0173615A1
EP0173615A1 EP85401587A EP85401587A EP0173615A1 EP 0173615 A1 EP0173615 A1 EP 0173615A1 EP 85401587 A EP85401587 A EP 85401587A EP 85401587 A EP85401587 A EP 85401587A EP 0173615 A1 EP0173615 A1 EP 0173615A1
Authority
EP
European Patent Office
Prior art keywords
recess
backrest
guide
lateral
central
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Withdrawn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
EP85401587A
Other languages
English (en)
French (fr)
Inventor
Jacques Michel Gérard Cathelineau
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.)
Vickers Roneo Dite Ste
Original Assignee
Vickers Roneo Dite Ste
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 Vickers Roneo Dite Ste filed Critical Vickers Roneo Dite Ste
Publication of EP0173615A1 publication Critical patent/EP0173615A1/de
Withdrawn legal-status Critical Current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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/402—Supports for the head or the back for the back adjustable in height

Definitions

  • the present invention relates to a device for adjusting the height of a backrest, in particular an office seat.
  • a first type of backrest comprises a metal part, in particular chrome-plated, folded substantially in the shape of [, pierced at the central part and provided with two lateral wings, also pierced at their central part, which protrude from the transverse sides of the en part parallel to the central side of the latter: this part is fixed to the rear face of the backrest by means of two rubber studs (in each of which a metal reinforcement insert is embedded) ensuring a deformable connection between this piece and the backrest and therefore flexibility of movement for the user.
  • said vertical rod projecting from the rear central part of the seat, which is applied against the central side of the en part and which is provided, in the second upper half, with an oblong axial window along which the backrest sliding with said piece can slide.
  • a screw is introduced into the above-mentioned space to make it pass through said oblong window and said central bore of the C-shaped part, so as to be applied by its head against the rod and to allow the attachment, at the desired height, of the backrest by sliding the latter along this rod and by tightening with a nut of special shape, allowing easy handling, which is screwed around said screw.
  • a tube in particular constituted by a flat with round edges, also projecting from the rear central part of the seat, is surrounded by a substantially parallelepipedal part and provided over its entire height with a central recess allowing its sliding the along this tube.
  • This piece is secured to the rear surface of the backrest by a first C-piece which cooperates with a second C-piece, the transverse sides of the ⁇ of which are articulated with the corresponding sides of the said first en-piece, to ensure the necessary flexibility of movement to the user: a screw provided with a head facilitating its manipulation passes through a tapped hole formed in the central side of the second piece at ⁇ and the opposite wall of said parallelepipedal piece, so as to reach the wall of said tube and at maintain the backrest in the desired position by screwing.
  • the object of the present invention is therefore to provide a file of the type comprising a device for adjusting its height which better meets the needs of practice than the files aiming at the same object previously known.
  • the present invention relates to a device for adjusting the height of an office seat back, using a clamping means against a guide and support means, in particular constituted by a tube, preferably a flat tube with round edges, which projects upwards from the rear central part of the seat,
  • a clamping means against a guide and support means in particular constituted by a tube, preferably a flat tube with round edges, which projects upwards from the rear central part of the seat
  • which adjustment device is of the type comprising a substantially parallelepipedal body which is fixed to the rear face of the backrest by an appropriate fixing means and which is provided over its entire height with a central recess allowing the sliding of this body and therefore of the backrest which it is integral with with respect to said guide and support tube,
  • which adjustment device is characterized in that the body hollowed out at its central part is provided with at least one lateral recess formed in at least one of its vertical walls and intended to accommodate said clamping means when it is in its unlocked position, and in that this recess
  • said clamping means is constituted by a rod having substantially at its central part a projecting portion, in particular obtained by drilling, which rod is intended to be housed in said tangent lateral recess to said central recess, so that its projecting portion protrudes from the middle portion of the lateral recess, when the rod is in the locked position, to clamp the device for adjusting the height of the backrest against one face of said guide tube and support.
  • said lateral recess is horizontal and is formed in the vertical wall of said hollow body which is on the side of the rear face of the backrest, namely which is applied against the face front of said guide and support tube which is hidden by the backrest.
  • said lateral recess is vertical and is formed in any one of the vertical walls of said hollow body.
  • said lateral recess is oblique and in particular oriented along the diagonal of any of the walls of said hollow body.
  • said means for operating the clamping rod consists of a handle provided with a recess intended to accommodate a part of this rod bent at 90 ° relative to said part which is housed in said lateral recess formed in the hollow body at its central part.
  • said handle has in cross section substantially an L-shape and is provided at its upper part with a portion connecting between the two sides of the L, one side of which constitutes a gripping wing, and in which is formed said recess intended to accommodate the external bent part of the clamping rod.
  • said means for fixing the body to the rear face of the backrest consists of a base produced by molding in one piece with this body and having two lateral fixing ears by screwing.
  • the fixing lug which is located on the side of said operating handle has, on its upper edge and on the side of said hollow body, a recess which is intended to accommodate the upper part of the handle when the latter is in the unlocking position and the vertical face of which abuts the upper part of this handle, so as to substantially limit its tilting from the locking position to 90 °.
  • said base has on the face which is applied against the back of lightening recesses, one of which communicates in particular with said lateral and central recesses.
  • the device cooperates with an abutment means consisting of a part which forcibly covers the upper end of said guide and support tube.
  • said abutment part has on its internal walls lugs projecting from these walls and ensuring that this part is held in position after being forcibly applied to said upper end of the guide and support tube.
  • the device for adjusting the height of the backrest 2 of an office chair comprises (cf. FIGS. 3a, 3b and 3c) a body 3 provided at its central part with a recess 4 allowing the sliding of this body 3, after having been secured to said backrest 2, along a guide and support means for this assembly, which means is preferably constituted by a flat tube 5 with round edges which projects from the rear central part of said seat.
  • a lateral and horizontal recess 7 which is tangent to said central recess 4, so as to communicate with the latter at its part median 7a and to cooperate with the clamping means according to the invention which will be described later.
  • the hollow body 3 is fixed to the rear face 8 of the backrest 2 by means of a base 9 produced by molding in one piece with this body 3 and integral with the wall 6, which base is provided with two lateral ears 10a , 10b for fixing by screwing to the backrest 2: two screws 11 pass through two holes 12 each formed in one of said ears 10a and 10b and are screwed into tapped holes made in the rear face 8 of said backrest 2.
  • Said lateral and horizontal recess 7 opens to the outside through the orifice 13 (cf. FIG. 3a) situated on a connection 14 molded and connecting the fixing lug 10a to the body 3.
  • the fixing lug 10b has a recess 15 at its upper edge and next to the body 3, the function of which will be described later.
  • FIGS. 3a, 3b and 3c are also shown relief recesses 16a, 16b, 16c and 16d, coming from molding, among which the recess 16d is in communication with said lateral 7 and central 4 recesses.
  • a clamping means (cf. FIG. 4) is used, according to the invention, constituted by a rod 17 having two portions 18 and 19 arranged at right angles one in relation to the other.
  • the first portion 18 is provided, substantially at its median part, with a projecting part 20, in particular obtained by routing, and is intended to be housed in said lateral and horizontal recess 7, so that said projecting part 20 of the rod 17 protrudes from the corresponding middle portion 7a of this recess 7 and clamps the device 1 against the front face 21 of said guide and support tube 5.
  • the portion 19 of the rod 17, folded relative to said portion 18, comes to be outside of said recess 7, on the side of the fixing lug 10b, and is force-fitted in a recess 22 formed in a handle maneuver 23 (see also Figures 5a, 5b and 5c).
  • this handle 23 has in cross section substantially an L shape and is provided at its upper part with a portion 24 connecting between the two sides 25 and 26 of L and in which the recess 22 is formed.
  • the unlocking of the device 1 is obtained by tilting said handle 23 between its locking position, corresponding to FIGS. 1, 4 and 5a to 5c, and its unlocking position shown in phantom in FIG. 2: the side 25 of the L constitutes a gripping wing which facilitates the tilting operation of the handle 23, and, at the end of this tilting, said portion 24 of the latter is housed in said recess 15 of the fixing lug 10b, the vertical face of which 27 abuts for the upper part 24 of said handle 23, so as to limit the tilting to substantially 90 °.
  • the lower side of the gripping wing 25 is inclined to follow the profile of the lower side of the fixing lug 10b and that, on the other hand, also the upper part of said portion 24 is inclined to follow the profile of the upper side of this same ear 10b.
  • the device for adjusting the height of the backrest 2 in accordance with the invention cooperates with a stop constituted by a part 28 which covers the upper end of said guide and support tube 5 (cf. FIGS. 1, 2 and 6) and which is applied by force to this end thanks to the presence of lugs 29 projecting from its internal surface.
  • the device 1 and the operating handle 23 are made of plastic, preferably polypropylene.
  • said connecting rod 17, which is made from a soft iron drawn of appropriate diameter, is advantageously protected against corrosion by zinc plating in particular.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
EP85401587A 1984-08-03 1985-08-02 Vorrichtung für die Höhenverstellung einer Rückenlehne, insbesondere eines Bürositzes Withdrawn EP0173615A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8412306 1984-08-03
FR8412306A FR2568457B1 (fr) 1984-08-03 1984-08-03 Dispositif de reglage de la hauteur d'un dossier, notamment de siege de bureau.

Publications (1)

Publication Number Publication Date
EP0173615A1 true EP0173615A1 (de) 1986-03-05

Family

ID=9306770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401587A Withdrawn EP0173615A1 (de) 1984-08-03 1985-08-02 Vorrichtung für die Höhenverstellung einer Rückenlehne, insbesondere eines Bürositzes

Country Status (2)

Country Link
EP (1) EP0173615A1 (de)
FR (1) FR2568457B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914482A (fr) * 1944-06-15 1946-10-09 Tan Sad Chair Co 1931 Ltd Dispositif de réglage et de blocage du dossier d'une chaise ou d'un meuble analogue
GB838665A (en) * 1957-10-24 1960-06-22 Dare Inglis Products Ltd Improvements in or relating to chairs
CH437682A (fr) * 1965-04-27 1967-06-15 Tubac S A Chaise de bureau
US3854772A (en) * 1973-05-25 1974-12-17 All Steel Inc Backrest height adjustment device for office furniture chairs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914482A (fr) * 1944-06-15 1946-10-09 Tan Sad Chair Co 1931 Ltd Dispositif de réglage et de blocage du dossier d'une chaise ou d'un meuble analogue
GB838665A (en) * 1957-10-24 1960-06-22 Dare Inglis Products Ltd Improvements in or relating to chairs
CH437682A (fr) * 1965-04-27 1967-06-15 Tubac S A Chaise de bureau
US3854772A (en) * 1973-05-25 1974-12-17 All Steel Inc Backrest height adjustment device for office furniture chairs

Also Published As

Publication number Publication date
FR2568457A1 (fr) 1986-02-07
FR2568457B1 (fr) 1986-12-19

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Inventor name: CATHELINEAU, JACQUES MICHEL GERARD