EP0648451A2 - Dispositif de blocage pour supports de sièges, notamment pour chaises tournantes - Google Patents

Dispositif de blocage pour supports de sièges, notamment pour chaises tournantes Download PDF

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Publication number
EP0648451A2
EP0648451A2 EP94113497A EP94113497A EP0648451A2 EP 0648451 A2 EP0648451 A2 EP 0648451A2 EP 94113497 A EP94113497 A EP 94113497A EP 94113497 A EP94113497 A EP 94113497A EP 0648451 A2 EP0648451 A2 EP 0648451A2
Authority
EP
European Patent Office
Prior art keywords
clamping
wall
bolt
pressure
clamping bolt
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Withdrawn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
EP94113497A
Other languages
German (de)
English (en)
Other versions
EP0648451A3 (fr
Inventor
Konrad Neumüller
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.)
Sifa Sitzfabrik GmbH
Original Assignee
Sifa Sitzfabrik GmbH
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 Sifa Sitzfabrik GmbH filed Critical Sifa Sitzfabrik GmbH
Publication of EP0648451A2 publication Critical patent/EP0648451A2/fr
Publication of EP0648451A3 publication Critical patent/EP0648451A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • A47C1/027—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 clamps or friction locking members

Definitions

  • the invention relates to an actuating device for seat supports for chairs, in particular swivel chairs, with the features of the preamble of claim 1.
  • Actuating devices for clamping plate packs for height adjustment of the seat surface and for tilting the backrest of a swivel chair are known, for example, from DE-U-75 18 743.
  • the plate packs are pressed against a wall of the seat support either by means of a screw bolt with a tubular body or by means of an eccentric lever and a bracket.
  • An actuating device for such seat supports in which the clamping and releasing of a part that can be pivoted relative to a fixed part takes place by means of force-actuated slats, which are anchored on one part without play and on the other part with play, and the locking force anchoring the play Presses slat ends against a lateral inner wall of one of the parts and the slats are released by means of at least one actuating lever which counteracts the locking force, is known from DE 34 24 756 C2.
  • the object of the present invention is to provide an actuating device for such seat supports which are simple in construction and assembly, which can be easily modified for different functions and which are very easy to use.
  • the lamella ends anchored with play in a seat support of the last-mentioned type are suspended via bores on a clamping bolt, which can be displaced horizontally and transversely to the lamellae in the part receiving the clamping against a spring force which brings about the locking force.
  • the clamping bolt is accommodated in a pressure sleeve on the side facing away from the side wall on which the clamping takes place, the diameter of which is larger than the bores of the lamellae and it can, in particular if it is not excepted with a press fit in the pressure sleeve, behind the pressure sleeve with a stop, e.g.
  • the clamping bolt is on its other side through the wall on which the clamping takes place and is provided on the outside at a distance from this wall with a bearing for a compression spring acting between the clamping bolt and the wall, which presses the clamping bolt outwards and thereby the locking force directs the pressure element connected to the clamping bolt onto the slats.
  • the associated actuating lever is pivotally mounted on the outside of the side wall, through which the clamping bolt emerges in a bracket firmly anchored to the wall, and rests with a pressure lug on the end of the clamping bolt, as a result of which it moves the clamping bolt transversely against the force of the compression spring when moving about its pivot axis and moved horizontally to the slats.
  • the bracket has a guide bore for the clamping bolt and lateral pins and the actuating lever is laterally with two tabs directed towards the bracket encloses and rotatably mounted on the pin with recesses in the lobes.
  • the mounting for the compression spring at the end of the clamping bolt is advantageously a shaped body or is provided with one, which is either essentially an oblique sliding surface for the pressure lug, or is designed with a kink, the slope being followed by a vertical section and the pressure lug after the kink has been overcome rests against the vertical section and unlocks the clamp.
  • the clamping bolt with the pressure sleeve is passed through the wall opposite the clamping and the pressure sleeve has lateral lugs there, with compression springs being clamped between the lugs and the wall, which together are designed to be weaker than the compression spring for the clamping .
  • a pressure element is arranged between the wall on which the clamping takes place and the lamellae, this pressure element being formed in one piece with the frame in a particularly advantageous manner and inserted captively into an opening in the associated wall.
  • the invention advantageously makes it possible to arrange two actuating devices for two parts pivotable relative to the fixed part on a seat support, the one actuating device being designed without a vertical section for the latching abutment of the pressure nose and the other actuating device having such a device.
  • one function for example adjusting the seat height
  • the other function for example adjusting the backrest, either likewise defined or the associated clamping can be completely unlocked, whereby a constant movement of the backrest against a spring force is possible.
  • Fig. 1 shows a seat support, consisting of a base part 1, on which a seat plate support 4 is pivotally mounted via a first pin 6 and a backrest support 5 is also pivotally mounted via a second pin 7. Between the backrest support 5 and a rear region of the base part 1, a first plate pack 8 is arranged such that it is pivotably suspended on the backrest support 5 without play on a retaining bolt 11 and pivotably on the base part with play on a clamping bolt 12. This plate pack 8 is clamped along the longitudinal axis of the clamping bolt 12.
  • a second plate pack 9 is arranged between the seat plate support 4 and a front region of the base part 1 in such a way that it is on the Seat plate support 4 is pivotally suspended without play on a holding bolt 10 and on the base part 1 with play on a clamping bolt 13, the clamping also taking place here along the longitudinal axis of the clamping bolt 13.
  • the seat support thus has two separate clamps for the backrest support 5 on the one hand and the seat plate support 4 on the other.
  • the clamping bolts are received in pressure sleeves 14, 15.
  • the top view in Fig. 2 shows the arrangement of the two clamps in the U-shaped cut base part 1 with its side walls 2, 3.
  • the only difference that can be seen here are the plate packs 8 and 9, which is as described above, serve to clamp different parts. It is therefore sufficient to describe the rear clamping for the plate pack 8, which is used to determine the position of the backrest support.
  • the plate pack 8 lies between a pressure sleeve 14, which is pushed onto the clamping bolt 12 with a press fit, which also anchors the plate pack, and a pressure element 35.
  • the pressure element 35 is formed in one piece with the bracket 22, which is connected to the pressure element 35 in an opening of the Wall 2 of the base part 1 is anchored.
  • Pressure body 35 and bracket 22 have a bore for the bolt 12 in which it can slide in the axial direction.
  • the pressure sleeve 14 is guided through the wall 3 of the base part 1 opposite the clamping and there laterally has two lugs 16, 17 which have recesses for pressure springs 23, 25 which act between the lugs 16, 17 and the wall.
  • the pressure sleeve 14 is rectangular in the area of its passage through the wall 3, as is the passage opening, so that an anti-rotation device is present.
  • the clamping bolt 12 protrudes a little beyond the pressure sleeve 14 and is provided there with a thread onto which a nut 20 is screwed, by means of which the clamping can be adjusted if necessary can be.
  • the force of the two compression springs 23, 25 together is weaker than that of the spring 24 against which the actual clamping force is exerted.
  • This spring acts externally between the wall 2 opposite the pressure sleeve 14 and the clamping bolt 12 which is guided through this wall 2 and has a stop for the pressure spring 24.
  • the compression spring 24 therefore endeavors to push the clamping bolt 12 outwards, as a result of which a clamping force is exerted on the disk set 8 via the pressure sleeve 14 and possibly the nut 20.
  • the compression spring 24 is arranged in a bore in the bracket 22.
  • the actuating lever 18 is, as described in more detail below, pivotally attached to the bracket 22 and rests with a pressure lug 28 on a molded body 24 which is attached to the bolt head 12 '.
  • FIGS. 3 and 4 This front view in section A - A of the previously described drawings shows the base part 1 with the seat plate support 4 and the clamp arranged between the walls 2, 3 for the plate pack 8, consisting of the bolt 12, the pressure sleeve 14 with its lugs 16, the nut 20 and the pressure body 35 on the trestle 22.
  • the actuating lever 18 provided with a cover 31 is suspended with two tabs on the side of the trestle 22 in pin 30, its pivoting range by further pins 29 on cantilevered arms of the trestle 22, which are in the manner of a Grip guide in curved slots 36 of the tabs of the operating lever 18, is fixed.
  • FIG. 5 shows the tabs 33, 33 'directed towards the bracket with recesses 34, 34' which receive the pins 30, 30 'of the bracket 22.
  • the bracket 22 in turn has two projecting arms 22, 22 ', at the ends of which the outwardly directed pins 29, 29' for the elongated holes 36, 36 'are arranged in the tabs 33, 33' of the actuating lever 18.
  • the molded body 26 has an inclined sliding surface with a kink and a subsequent vertical section. 4, the pressure lug 28 of the actuating lever 18 bears against the bevel of the molded body 26.
  • the actuating lever 18 is inclined slightly downwards and the pins 29, 29 'rest on the upper end of the elongated holes 36, 36'. In this position, the clamping is adjusted so that a firm hold of the two mutually pivotable parts, here the base part 1 and the backrest support is guaranteed. If the actuating lever 18 is now pulled up, the pressure lug 28 slides along the slope of the molded body 26. The clamping is unlocked. If the actuating lever 18 is moved further upward, the pressure lug 28 slides over the kink on the molded body 26 and comes to rest against its vertical section. The backrest support remains unlocked and the user can rock the backrest, which is resiliently biased towards the back of the user. If the backrest is to be fixed at a certain inclination, as soon as this is achieved, the actuating lever 18 must be brought down with its pressure lug 28 over the kink, whereupon it automatically slides into the clamping position.
  • Fig. 6 the clamping is shown in an exploded view.
  • the parts through which the clamping bolt 12 passes are shown on the left, starting with the nut 20, the pressure sleeve 14 with its lugs 16, the plate pack 8, the bracket 22 with the pressure body 35 and the pin 29 and 30 and ending with the compression spring 24.
  • Either the molded body 26 or 27 is to be plugged onto the clamping bolt head 12 '.
  • the shaped bodies differ in that the shaped body 26 has a vertical section for the detent mounting of the pressure lug 32 of the actuating lever 18 and the shaped body 27 does not.
  • the pressure body 28 is designed here as a bolt, which is between the tabs 33, 33 'of the actuating lever 18th is held.
  • the actuating lever 18 shown on the right has on its tabs 33, 33 'projecting towards the bracket 22, the recesses 34, 34' for the rear pins 30, 30 'of the bracket 22, and the elongated holes 36, 36' for the front pins 29, 29 'of the bracket 22.
  • a cover 31 is provided for the area of the connection between the actuating lever 18 and bracket 22.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Clamps And Clips (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP94113497A 1993-10-14 1994-08-30 Dispositif de blocage pour supports de sièges, notamment pour chaises tournantes. Withdrawn EP0648451A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335017A DE4335017A1 (de) 1993-10-14 1993-10-14 Betätigungsvorrichtung für Sitzträger für Stühle, insbesondere Drehstühle
DE4335017 1993-10-14

Publications (2)

Publication Number Publication Date
EP0648451A2 true EP0648451A2 (fr) 1995-04-19
EP0648451A3 EP0648451A3 (fr) 1995-12-27

Family

ID=6500130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113497A Withdrawn EP0648451A3 (fr) 1993-10-14 1994-08-30 Dispositif de blocage pour supports de sièges, notamment pour chaises tournantes.

Country Status (11)

Country Link
US (1) US5588706A (fr)
EP (1) EP0648451A3 (fr)
AU (1) AU667017B2 (fr)
CA (1) CA2118075A1 (fr)
DE (1) DE4335017A1 (fr)
FI (1) FI944791A7 (fr)
IL (1) IL111088A (fr)
NO (1) NO943436L (fr)
RU (1) RU2101993C1 (fr)
TR (1) TR28043A (fr)
ZA (1) ZA948056B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011611A1 (fr) * 1994-10-17 1996-04-25 Sifa Sitzfabrik Gmbh Support de siege pour chaises de bureau ou analogue

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE960139A1 (en) * 1995-02-15 1996-08-21 Ashfield Eng Co Wexford Ltd An actuator for a chair mechanism lock
US5702154A (en) * 1995-11-29 1997-12-30 Keiper Recaro Gmbh & Co. Airline passenger seats
US5676425A (en) * 1996-03-19 1997-10-14 R.A.M. Machines (1990) Ltd. Releasable lock forchair control mechanism
CA2330073A1 (fr) * 2001-01-04 2002-07-04 Silhouet-Tone Ltee Dispositif de serrage pour commander la rotation d'un fauteuil autour de l'arbre de soutien d'un bati de base
US6467845B1 (en) * 2001-09-21 2002-10-22 Su-Ming Chen Chair with a locking unit
US7017992B2 (en) * 2003-02-18 2006-03-28 Warvel Products, Inc.-N.C. Chair control device for a tiltable chair
US7380884B2 (en) * 2003-10-29 2008-06-03 Leggett & Platt Ltd. Switching apparatus
TWI827479B (zh) * 2023-02-22 2023-12-21 陳信華 椅子調整裝置的控制拉桿結構

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523308C2 (de) * 1975-05-27 1982-08-12 Konrad 8501 Burgthann Neumüller Sitzmöbel, insbesondere Bürodrehstuhl
US4062587A (en) * 1976-01-13 1977-12-13 Herman Miller, Inc. Back position control device for chairs
NO143253C (no) * 1977-08-25 1981-01-14 Staal & Stil As Anordning ved arbeidsstol.
DE3212695A1 (de) * 1981-04-06 1983-01-13 Jürgen Dipl.-Ing. 8026 Irschenhausen Lambrecht Hydraulisch betaetigte arretiervorrichtung
DE3424756A1 (de) * 1983-08-12 1985-02-28 Konrad 8501 Burgthann Neumüller Sitztraeger fuer stuehle, insbesondere arbeitsdrehstuehle
WO1990014031A1 (fr) * 1989-05-19 1990-11-29 Tridec Iii Corporation Chaise pivotante a siege inclinable et mecanisme prevu a cet effet
US5066869A (en) * 1990-04-09 1991-11-19 Unitrode Corporation Reset circuit with PNP saturation detector
DE4014154A1 (de) * 1990-05-02 1991-11-07 Beer Gmbh Metallwarenfabrik Sitztraeger sowie sitzmoebel, insbesondere buerodrehstuhl
DE9109184U1 (de) * 1991-07-25 1991-10-10 SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg Sitzträger für Stühle
US5356200A (en) * 1992-10-23 1994-10-18 Doerner Products Ltd. Unitary brake for a chair tilt mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011611A1 (fr) * 1994-10-17 1996-04-25 Sifa Sitzfabrik Gmbh Support de siege pour chaises de bureau ou analogue
US5685607A (en) * 1994-10-17 1997-11-11 S I F A Sitzfabrik Gmbh Office chair seat carrier

Also Published As

Publication number Publication date
AU667017B2 (en) 1996-02-29
US5588706A (en) 1996-12-31
FI944791A0 (fi) 1994-10-12
CA2118075A1 (fr) 1995-04-15
EP0648451A3 (fr) 1995-12-27
FI944791A7 (fi) 1995-04-15
DE4335017A1 (de) 1995-04-20
NO943436D0 (no) 1994-09-15
ZA948056B (en) 1995-06-07
IL111088A (en) 1998-06-15
TR28043A (tr) 1995-12-11
NO943436L (no) 1995-04-18
RU94036441A (ru) 1996-07-27
AU7427194A (en) 1995-06-22
IL111088A0 (en) 1994-11-28
RU2101993C1 (ru) 1998-01-20

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