EP0350748B1 - Betätigungseinrichtung für ein Federelement an einem verstellbaren Stuhl - Google Patents

Betätigungseinrichtung für ein Federelement an einem verstellbaren Stuhl Download PDF

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Publication number
EP0350748B1
EP0350748B1 EP89112090A EP89112090A EP0350748B1 EP 0350748 B1 EP0350748 B1 EP 0350748B1 EP 89112090 A EP89112090 A EP 89112090A EP 89112090 A EP89112090 A EP 89112090A EP 0350748 B1 EP0350748 B1 EP 0350748B1
Authority
EP
European Patent Office
Prior art keywords
contact element
housing
actuating device
spring
grooves
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.)
Expired - Lifetime
Application number
EP89112090A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0350748A1 (de
Inventor
Hermann Locher
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.)
Giroflex Entwicklungs AG
Original Assignee
Giroflex Entwicklungs AG
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 Giroflex Entwicklungs AG filed Critical Giroflex Entwicklungs AG
Priority to AT89112090T priority Critical patent/ATE85744T1/de
Publication of EP0350748A1 publication Critical patent/EP0350748A1/de
Application granted granted Critical
Publication of EP0350748B1 publication Critical patent/EP0350748B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • 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
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03216—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by fluid means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
    • Y10T74/20408—Constant tension sustaining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
    • Y10T74/2042—Flexible transmitter [e.g., Bowden cable] and hand operator
    • Y10T74/20426—Slidable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
    • Y10T74/2045—Flexible transmitter [e.g., Bowden cable] and sheath support, connector, or anchor

Definitions

  • the invention relates to an actuating device for a spring element arranged on an adjustable chair, which is supported at one end on a support part mounted on a support column and at the other end on a backrest support and with an associated angle lever and an actuatable switching device in such a functional connection stands that when the spring element is unlocked, the backrest support can be adjusted together with seat supports hinged to it and on the support part and can be fixed in the respective position when the spring element is blocked.
  • GB-A 2 195 238 discloses a spring element which is adjustable in height and inclination against the restoring force and which is arranged at the upper end a base frame includes a cantilever-shaped support arm, two seat supports hinged to it in the knee area, one with the one end between the seat supports and the other end mounted on the support arm via steering levers on the support arm, and a gas pressure spring which is supported at one end on the backrest support and with the other other end, designed as a plunger, is operatively connected to the actuating device, which is formed approximately from a linkage and an angle lever.
  • a control head arranged non-positively on the piston rod of a gas pressure spring is known, by means of which the piston rod of the gas pressure spring is either freely movable or can be blocked when actuated appropriately.
  • the control head comprises a housing provided with a cylindrical recess, a control sleeve arranged therein and operable from the outside via a pressure member, a snap-in mechanism provided with locking teeth, and a switching element that is operatively connected to the control rod of the gas pressure spring.
  • control head arranged in the axial direction on the piston rod of the gas pressure spring is structurally relatively complex on the one hand to achieve the individual functions and on the other hand requires a correspondingly large installation space below the seat. To replace the gas pressure spring, a time-consuming and costly assembly of the individual elements is also required.
  • the invention has for its object to improve an actuator of the type mentioned in such a way that an exact and perfectly reproducible locking and unlocking process of the gas pressure spring is ensured with simple constructional means and while maintaining a small space requirement.
  • this object is achieved in that in a housing of the switching device, two switching elements, each provided with a toothing on the facing end faces and operatively connected to tension members, are arranged in axial fashion by means of grooves distributed on the outer circumference on web portions arranged distributed on the inner circumference of the housing Guided in the direction of the housing and can be moved relative to one another by the tension members, the first switching member being adjustable in the axial direction in the housing by means of the one pulling member that can be actuated by a handle such that the second switching member, which unlocks the spring element via the other tension member or fixing angle lever is operatively connected, with its grooves comes out of engagement of the web sections and held, on the end faces of the web sections, by sliding of the mutually engaging tooth flanks of the toothing, relative to the first S switching element is rotatable.
  • the switching device which is operatively connected to the Bowden tension members can be arranged in a space-saving manner at any point on the supporting part or on another carrier, so that when the gas pressure spring is replaced, only the correspondingly assigned and mounted angle lever has to be pivoted without further aids.
  • the switching device does not have to be removed when replacing the gas pressure spring.
  • the chair frame partially shown in FIG. 1 comprises a support part 2 placed on a support column 1, which is designed as a channel-shaped hollow shell.
  • the support part 2 has a web 3 with two side walls 4 arranged thereon, only one of the two side walls 4 being visible in FIG.
  • a first swivel 6 is arranged in each of the two side walls 4.
  • a seat support 5 is mounted on the swivel joints 6, which are each supported in the rear area via a second swivel joint 8 on a backrest support 7.
  • the second swivel joint 8 can also, in a manner not shown in detail, each be designed as a torsion spring.
  • the backrest support 7 is designed as a two-armed lever, of which one arm forms a back part 9, which is only partially shown, and the other arm forms a support part 10, which extends toward the knee-side end.
  • a third swivel joint 11 is arranged, on each of which a link 12 is mounted, the links 12 being rotatably mounted in a fourth swivel joint 15 arranged on the side walls 4.
  • An angle bracket 16 is pivotally mounted on the third swivel joint 11 with a web 13, on the other web 14 of which one end of a spring device 19, for example a piston rod 18, is firmly screwed by means of a nut 20.
  • a threaded bolt 23 is fastened, which on the one hand is provided with a nut 25 for fastening a second angle bracket 24.
  • the threaded bolt 23 serves to guide a switching plunger 26. If, as in FIG. 1, the spring device 19 is a gas spring, the switching plunger 26 locks the spring device 19 in the respective position. However, the switching plunger 26 against the cylinder 22nd moved, the spring device 19 is unlocked and the position of the chair frame can be changed.
  • An actuating device designated in its entirety by 30, is used to actuate the switching plunger 26, which is connected to an actuating element 31 via tension members 32, 33 with a two-armed angle lever 34 which is operatively connected to the spring device.
  • One arm 35 of the angle lever 34 is coupled to the one tension member 33, while the other arm 36 acts on the switching plunger 26. If, for example, the angle lever 34 is pivoted counterclockwise, the spring device 19 is unlocked, while when the angle lever 34 is pivoted back clockwise into its starting position, the spring device 19 is locked.
  • FIG. 2 shows the chair frame according to FIG. 1 as a kinematic diagram, which is composed of the support part 2, the seat supports 5 and the backrest support 7.
  • the reference numbers correspond to those according to FIG. 1 and are therefore not explained again.
  • the angle bracket 24 is articulated on the other end of the spring device 19 with a fifth swivel joint 27 on the knee-side end of the support part 2.
  • the design, arrangement and function of the actuating device 30 are described with reference to FIGS. 3 and 4.
  • the actuating device 30 comprises a switching device 40, which is composed essentially of a housing 41 and two switching elements 38, 39, the latter of which are displaceably guided in a bore 42 in the housing 41.
  • the switching elements 38, 39 have corresponding axial grooves 44, 44 '.
  • the axial grooves 44 of a switching element 38 extend over the entire length, while the axial grooves 44 'delimited by a stop 44 ⁇ (FIG. 3)' in the other switching element 39 extend only over part extend its length and so, see Fig. 4, form a stop on the end faces 43 'of the webs 43.
  • the mutually facing end faces of the switching elements 38, 39 have a toothing 45, 46, which is composed of steep and flat flanks 47, 47 'and 48, 48', the function of which will be explained with reference to FIG. 5.
  • a driver arm 49 is arranged on the switching element 38, in which the one tension element 32 in the form of a wire 51 of a Bowden cable is fastened.
  • the wire 51 has a holding head 52 which is inserted into a groove 53 in the driving arm 49.
  • the wire 51 lies in a compression spring 54 and is then guided in a support base 55 with a groove 56, on which the compression spring 54 is supported. Outside of the support base 55, the wire 51 is guided in a flexible guide tube 57 which is fastened to the actuating element 31, while the wire 51 is fastened to a pivotable handle 58 of the same.
  • the handle 58 By pulling the handle 58 (FIG. 1), the switching element 38 can be moved against the restoring force of the compression spring 54.
  • a slot 59 'limited by a stop 59' is provided on the top of the housing 41.
  • the housing 41 has two fastening tabs 60 with which it can be fastened to the supporting part 2. However, only one fastening tab 60 can also be provided.
  • the other switching element 39 is connected to the one arm 35 of the angle lever 34 by the other tension element 33 in the form of a second Bowden cable.
  • the second Bowden cable is composed of a wire 61 and a guide tube 62, the latter being supported on the housing 41 with an end cover 64.
  • a compression spring 63 is arranged, which has one end on the guide tube 62 and the other The end is supported on the arm 35, see FIG. 4.
  • the compression spring 63 exerts a clockwise force on the arm 35, as a result of which the switching plunger 26 can move into the locking position of the spring device 19.
  • the switching member 39 assumes the position in which the switching plunger 26 Unlocked spring device 19.
  • the switching element 39 is moved and rotated again until its axial grooves 44 are aligned with the webs 43, whereupon when the handle 58 is released, the switching element 39 can return to its initial position, in which the switching plunger 26 is in the locking position of the spring device can return.
  • the rotation carried out by the switching element 39 corresponds to a web pitch t.
  • the rotary movement of the switching element 39 takes place through the toothing 45, 46, as will be explained with reference to FIG. 5.
  • the two switching elements 38, 39 are shown in a developed position, the axial webs 43 and the axial grooves 44, 44 'being shown.
  • A corresponds to the position of the actuating device 30 in which the spring device 19 is locked.
  • the two switching elements 38, 39 are located with their axial grooves 44, 44 'in the region of the axial webs 43.
  • the handle 58 By pulling the handle 58, the one switching element 38 is moved (raised) in the axial direction of the housing 41 until the other switching element 39 over the end the axial webs 43 is located.
  • the flat flanks 48 can now shift relative to one another since the switching element 39 is under the action of the compression spring 63.
  • the switching element 39 thus rotates to position B.
  • the handle 58 is released, so that one switching element 38 moves away from the other switching element 39, see C, which slides down with its flat flank 48 on the axial webs 43 while simultaneously rotating, see D.
  • the rotatable switching element 39 has thus completed two partial rotations.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Massaging Devices (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
EP89112090A 1988-07-15 1989-07-03 Betätigungseinrichtung für ein Federelement an einem verstellbaren Stuhl Expired - Lifetime EP0350748B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112090T ATE85744T1 (de) 1988-07-15 1989-07-03 Betaetigungseinrichtung fuer ein federelement an einem verstellbaren stuhl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2721/88 1988-07-15
CH2721/88A CH676417A5 (es) 1988-07-15 1988-07-15

Publications (2)

Publication Number Publication Date
EP0350748A1 EP0350748A1 (de) 1990-01-17
EP0350748B1 true EP0350748B1 (de) 1993-02-17

Family

ID=4240118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112090A Expired - Lifetime EP0350748B1 (de) 1988-07-15 1989-07-03 Betätigungseinrichtung für ein Federelement an einem verstellbaren Stuhl

Country Status (8)

Country Link
US (1) US5080434A (es)
EP (1) EP0350748B1 (es)
JP (1) JPH02249509A (es)
AT (1) ATE85744T1 (es)
CH (1) CH676417A5 (es)
DE (1) DE58903560D1 (es)
ES (1) ES2038374T3 (es)
PT (1) PT91151B (es)

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US5235870A (en) * 1992-01-21 1993-08-17 Handy & Harman Automotive Group, Inc. Modular brake system utilizing a reactive slide assembly
US5211071A (en) * 1992-01-21 1993-05-18 Handy & Harman Automotive Group Modular brake system assembly procedure
DE4216173A1 (de) * 1992-05-15 1993-11-18 Sifa Sitzfabrik Gmbh Betätigungsvorrichtung für Verstellmechanismen von Sitzmöbeln
CH690019A5 (de) * 1992-07-16 2000-03-31 Giroflex Entwicklungs Ag Traggestell für einen Stuhl, insbesondere für einen in der Höhe und Neigung verstellbaren Bürostuhl.
DE4320105C1 (de) * 1993-06-17 1994-10-13 Ameu Management Corp Verstellvorrichtung für ein biegeelastisches Stützelement einer Rückenlehne
IT242153Y1 (it) * 1996-01-08 2001-06-04 Alta Srl Dispositivo di regolazione dell'inclinazione della seduta in sedie epoltroncine in genere
US5752414A (en) * 1996-05-24 1998-05-19 Teleflex Incorporated Cable operated brake/ignition/transmission interlock
US5775776A (en) * 1997-01-22 1998-07-07 Seating Specialities, Inc. Lock for seat backs
US5983745A (en) * 1997-04-28 1999-11-16 Petrak; Gregory H. Park brake cable system including connector clip and associated method of tensioning
JP4028914B2 (ja) * 1997-08-07 2008-01-09 中央発條株式会社 ケーブルジョイント
CA2246021A1 (en) * 1997-08-29 1999-02-28 Leggett & Platt Canada Co./Societe Leggett & Platt Canada Chair tilt mechanism
ITTO980034A1 (it) 1998-01-16 1999-07-16 Miotto Int Comp Dispositivo meccanico per il controllo della movimentazione sincrona d i sedile e schienale di una seduta.
US6045189A (en) * 1998-09-10 2000-04-04 Schooler; Paul T. Seat back lock with pivoting locking member
US5992264A (en) * 1998-09-29 1999-11-30 Grand Haven Stamped Products, Division Of Jsj Corporation Apparatus including shifter, park brake mechanism, and console structure
US6378943B1 (en) 1999-03-26 2002-04-30 Northfield Metal Products Ltd. Chair tilt lock mechanisms
GB0010238D0 (en) 2000-04-28 2000-06-14 Northeastern Components Intern Locking mechanism for chair and pushbutton control therefor
US7197853B1 (en) * 2000-08-31 2007-04-03 W. Frank Little, Jr. Demountable and reusable wall and ceiling system
US7331255B2 (en) * 2001-09-21 2008-02-19 Petrak Gregory H Method and apparatus for tensioning an emergency brake system on a vehicle
AU2002334647A1 (en) * 2001-09-21 2003-04-01 Gregory H. Petrak Method and apparatus for tensioning an emergency brake system on a vehicle
US6637575B2 (en) 2001-10-03 2003-10-28 L & P Property Management Company Apparatus and method for thin profile ratchet actuator
US6691851B2 (en) 2001-10-03 2004-02-17 L & P Property Management Company Apparatus and method for ratchet actuator
US6688443B2 (en) 2001-11-07 2004-02-10 L & P Property Management Company Apparatus and method for double clutch actuator
US6668679B2 (en) 2001-12-07 2003-12-30 L & P Property Management Company Apparatus and method for pulley actuator
US6880424B2 (en) * 2001-12-07 2005-04-19 L & P Property Management Company Apparatus for telescoping actuator
US6957596B2 (en) 2002-10-25 2005-10-25 L&P Property Management Company Apparatus and method for braking ergonomic support actuator
US6742843B2 (en) 2002-10-25 2004-06-01 Knoll, Inc. Cable control with overload protection device
US20040080197A1 (en) * 2002-10-25 2004-04-29 Robert Kopetzky Transmission amplifier for bowden cables and method of using the same
US6971719B2 (en) * 2003-03-21 2005-12-06 L & P Property Management Company Clutch actuator surface apparatus and method
US6905445B1 (en) * 2003-12-16 2005-06-14 Giant Manufacturing Co., Ltd. Resistance adjuster for adjusting a resistance-providing member on a stationary bicycle
EP1714373B1 (en) * 2004-02-06 2012-06-13 L&P Property Management Company In-line actuator apparatus and method
DE102004034229A1 (de) * 2004-07-15 2006-02-16 Schukra Gerätebau AG Betätigungseinrichtung
US7587956B2 (en) * 2006-08-29 2009-09-15 Franklin Products, Inc. Device for controlling motion
WO2009018471A1 (en) * 2007-07-31 2009-02-05 Petrak Gregory H System and method for tensioning an emergency brake system
US8172324B2 (en) * 2008-06-06 2012-05-08 Knoll, Inc. Preference control mechanism
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US9144897B2 (en) 2012-04-25 2015-09-29 Innovative System Solutions, Inc Apparatus, system and method for tensioning an emergency brake system
US10278504B2 (en) * 2017-02-24 2019-05-07 Living Style (B.V.I.) Limited Cable connector for a chair function controller and operator
CN107080379B (zh) * 2017-06-20 2023-07-11 中威控股集团有限公司 座椅及其座椅升降调节控制机构
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Also Published As

Publication number Publication date
ATE85744T1 (de) 1993-03-15
CH676417A5 (es) 1991-01-31
DE58903560D1 (de) 1993-03-25
ES2038374T3 (es) 1993-07-16
JPH02249509A (ja) 1990-10-05
US5080434A (en) 1992-01-14
EP0350748A1 (de) 1990-01-17
PT91151A (pt) 1990-02-08
PT91151B (pt) 1995-07-03

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