EP0925006A1 - Dispositif antiretour - Google Patents

Dispositif antiretour

Info

Publication number
EP0925006A1
EP0925006A1 EP98942473A EP98942473A EP0925006A1 EP 0925006 A1 EP0925006 A1 EP 0925006A1 EP 98942473 A EP98942473 A EP 98942473A EP 98942473 A EP98942473 A EP 98942473A EP 0925006 A1 EP0925006 A1 EP 0925006A1
Authority
EP
European Patent Office
Prior art keywords
clamping
threaded spindle
furniture
lever
latching
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
EP98942473A
Other languages
German (de)
English (en)
Inventor
Reinhard Gebhard
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 EP0925006A1 publication Critical patent/EP0925006A1/fr
Ceased legal-status Critical Current

Links

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
    • 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

  • the invention relates to jerk inhibition for preventing backward tilting of a spring-loaded furniture part with the features of the preamble of claim 1.
  • the object of the present invention is to provide improved jerk inhibition with greater functional reliability.
  • jerk inhibition of the type mentioned at the outset is characterized in that the clamping of the threaded spindle is effected by applying force to the clamping jaws acting on it by means of an actuating means, the actuating means being mounted in or on the housing in such a way that the rotatably mounted part is at least partially one has outer ring gear or latching hook, with which or with which a suitable abutment, movably mounted latching part can be brought into engagement, that the actuating means is connected to a latching release means, the latching release means taking the latching part with the ring gear or latching hook when the actuating means is in the clamped position brings into locking engagement, and that means are available to hold the locking part with the ring gear or the locking hook after removal of the clamping force acting on the jaws and this engagement by changing the angle of inclination between b both
  • a preferred embodiment of the invention further has one or more of the features that the furniture parts are the seat and the backrest of a chair, such as an office swivel chair, and that the housing is a seat support that is firmly connected to the seat, that the threaded spindle is self-locking at one end is continuously guided in a mother part of the backrest support and that the clamping jaws, the actuating means, the latching release means, the latching part and the ring gear or Locking hooks are arranged in the seat support at the other end of the threaded spindle, that the actuating means is a clamping spindle guided transversely to the threaded spindle through the seat support and the clamping jaws arranged therein, which is connected to an actuating lever mounted on the outside of the seat support, by means of which one force directed transversely to the axis of the threaded spindle on the clamping jaws and via this clamping on the threaded spindle can be applied that the locking part is arranged trans
  • Detent release means is connected and can be brought into a clamping position by this that the detent release means is a rod which is guided at its one end in the actuating lever to a limited extent and which is essentially transverse to the axis of the
  • Threaded spindle is arranged and at its other end has a hook for the connection to the clamping lever, the movement limitation of the rod being designed such that it is activated when the clamp is actuated
  • Actuating lever pulls the clamping lever into a clamping position and / or that between the nut part, which is arranged at the lower end of the backrest support and the seat support around the threaded spindle under tension, a compression spring is arranged, which press these apart and thereby give the threaded spindle a certain sense of rotation seeks that the locking part with the ring gear or locking hook in this direction of rotation of the threaded spindle can be brought into engagement, and that a movement of the threaded spindle against this direction of rotation removes the blockage.
  • Figure 1 is a partial section across jerk inhibition with a threaded spindle in the clamped position.
  • Fig. 2 shows the jerk inhibition of Fig. 1 in the free position
  • Fig. 3 is a plan view of the jerk inhibition in the position of Fig. 1;
  • FIG. 4 is a top view of the jerk inhibition in the position of FIG. 2.
  • a housing 1 which is arranged on the bottom of a seat support 2 with a U-shaped cross section and a
  • a clamping device for the threaded spindle 3, 3 ' is arranged in the seat support 2, which consists of two clamping jaws 16, 16', which is arranged on a transverse to the threaded spindle 3, 3 'and in one
  • a compression spring 19 acts between the clamping jaws 16, 16 'and is intended to facilitate their release from the threaded spindle.
  • the clamping spindle 18 lies at its other end with a nut 20 behind the more distant clamping jaws 16 ', the latter pressing on the threaded spindle 3' by clamping the nut.
  • the clamping pressure is brought about by a tensile force on the clamping spindle 18, which is applied in a known manner by an actuating lever 14, in that it is pressed by an eccentric surface 15 onto the outer surface of the wall 2 'of the seat support 2 and is thus held.
  • the jerk inhibition consists of a latching part which is designed as a lever 5 or pawl and which has notches which can be arranged with a toothed ring 4 arranged around the threaded spindle 3 and rotatably connected to it, as shown in FIG. 1.
  • the lever 5 is arranged transversely to the axis of the threaded spindle 3 ', which is chamfered laterally here.
  • the lever is pressed down on its one side facing the actuating lever 14 by a spring 8, which is arranged between the latter and the upper housing part 1 '.
  • the teeth 4 'of the ring gear are chamfered clockwise and engage in the matching notches 6 of the lever 5, the thread of the threaded spindle 3' being designed so that the pressure of the compression spring 17 in this position for a firm wedging between the lever 5 and the ring gear 4 provides.
  • the blocking position of the jerk inhibition is achieved by actuating the actuating lever 14.
  • actuating the actuating lever 14 In this is Arranged parallel to the clamping spindle 18 is a rod 11 which is guided over the housing 1 of the jerk inhibition.
  • the rod 11 is guided by stop means in a bore of the actuating lever 18 to be movable and is limited by pivoting the

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Clamps And Clips (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Control Of Transmission Device (AREA)
  • Legs For Furniture In General (AREA)
  • Furniture Connections (AREA)

Abstract

L'invention concerne un dispositif antiretour de chocs pour éviter le retour d'un premier élément de meuble soumis à la pression d'un ressort et monté inclinable sur un deuxième élément de meuble. L'angle d'inclinaison entre les deux éléments de meuble est réglable par blocage d'une broche filetée (3'), fixée sur un élément de meuble et montée, sans autoblocage, dans une pièce-écrou sur l'autre élément de meuble. La broche filetée ou la pièce-écrou sont réalisées sous forme de pièce montée rotative et sont disposées dans une enveloppe (2) sur un élément de meuble. Le blocage de la broche filetée (3, 3') se fait par application d'une force sur des mâchoires (16, 16') agissant sur elle, par l'intermédiaire d'un organe d'actionnement qui est situé dans ou sur l'enveloppe (2). En outre, la pièce montée rotative présente, au moins partiellement, une couronne dentée (4) ou un crochet de verrouillage externe avec lequel ou lesquels on peut mettre en prise un élément de verrouillage monté mobile sur l'enveloppe et présentant une butée adaptée. L'organe d'actionnement est, pour sa part, relié à un organe de déclenchement de verrouillage.
EP98942473A 1997-07-10 1998-07-01 Dispositif antiretour Ceased EP0925006A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29712159U DE29712159U1 (de) 1997-07-10 1997-07-10 Ruckhemmung
DE29712159U 1997-07-10
PCT/DE1998/001814 WO1999002073A1 (fr) 1997-07-10 1998-07-01 Dispositif antiretour

Publications (1)

Publication Number Publication Date
EP0925006A1 true EP0925006A1 (fr) 1999-06-30

Family

ID=8042911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98942473A Ceased EP0925006A1 (fr) 1997-07-10 1998-07-01 Dispositif antiretour

Country Status (12)

Country Link
EP (1) EP0925006A1 (fr)
AU (1) AU9061298A (fr)
BR (1) BR9806057A (fr)
CA (1) CA2264645A1 (fr)
DE (1) DE29712159U1 (fr)
IL (1) IL128752A0 (fr)
NO (1) NO990910L (fr)
NZ (1) NZ334497A (fr)
PL (1) PL331936A1 (fr)
TR (1) TR199900484T1 (fr)
WO (1) WO1999002073A1 (fr)
ZA (1) ZA986063B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2731495C (fr) 2000-09-01 2015-02-03 Gen-Probe Incorporated Amplification de sequences vih-1 pour la detection de sequences associees aux mutations de la resistance aux medicaments
WO2002100214A1 (fr) * 2001-06-08 2002-12-19 Eric Radmilo Accoudoir avec position du dos auto-reglable

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US793274A (en) * 1904-11-01 1905-06-27 Oscar P Breithut Ratchet mechanism for reclining-chairs.
GB1553385A (en) * 1975-12-03 1979-09-26 Irvin Industries Inc Arrangement for automatic locking of webbing-type safety belts
DE3134298C2 (de) * 1981-08-29 1986-06-12 Daimler-Benz Ag, 7000 Stuttgart Verstellbarer Fahrzeugsitz

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9902073A1 *

Also Published As

Publication number Publication date
BR9806057A (pt) 2000-01-25
NO990910D0 (no) 1999-02-25
IL128752A0 (en) 2000-01-31
CA2264645A1 (fr) 1999-01-21
WO1999002073A1 (fr) 1999-01-21
NO990910L (no) 1999-02-25
TR199900484T1 (xx) 1999-09-21
AU9061298A (en) 1999-02-08
ZA986063B (en) 1999-03-29
DE29712159U1 (de) 1997-09-25
NZ334497A (en) 1999-10-28
PL331936A1 (en) 1999-08-16

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