EP3847928A1 - Ferrure pivotante et meuble - Google Patents

Ferrure pivotante et meuble Download PDF

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Publication number
EP3847928A1
EP3847928A1 EP21161084.5A EP21161084A EP3847928A1 EP 3847928 A1 EP3847928 A1 EP 3847928A1 EP 21161084 A EP21161084 A EP 21161084A EP 3847928 A1 EP3847928 A1 EP 3847928A1
Authority
EP
European Patent Office
Prior art keywords
toothing
pawl
lever
swivel fitting
fitting according
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.)
Pending
Application number
EP21161084.5A
Other languages
German (de)
English (en)
Inventor
Oliver Nill
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.)
Hettich Franke GmbH and Co KG
Original Assignee
Hettich Franke GmbH and Co KG
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 Hettich Franke GmbH and Co KG filed Critical Hettich Franke GmbH and Co KG
Publication of EP3847928A1 publication Critical patent/EP3847928A1/fr
Pending 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 and lockable 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 and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0308—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable by rotation
    • 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
    • A47C1/036—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a head-rest
    • 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—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • 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
    • A47C7/54—Supports for the arms
    • A47C7/541—Supports for the arms of adjustable type

Definitions

  • the present invention relates to a swivel fitting according to the preamble of claim 1 and a piece of furniture with such a swivel fitting.
  • a generic swivel fitting is, for example, from EP 2 544 567 B1 known.
  • two levers can be fixed relative to one another via a latching mechanism.
  • One of these levers can be attached to a base body or seat part of upholstered furniture, while the second lever is used, for example, to fix a pivotably mounted headrest, which is fixed from an initial position in predetermined locking steps with the help of the pivot fitting.
  • the locking fitting In order to change this fixing position further in the adjustment direction, the locking fitting can be pivoted further in a simple manner.
  • the object of the present invention is to provide a swivel fitting in which the adjustment process from a first to a second latching position can be carried out even more easily and with which a larger latching area is made possible with the same adjustment path. Another task is to further increase the service life of the swivel fitting.
  • the object is also achieved by a piece of furniture with such a swivel fitting according to claim 18.
  • the swivel fitting according to the invention in particular for movable furniture parts on seating or reclining furniture, has a first lever and a second lever which are pivotably mounted relative to one another about a common axis from a basic position by a predetermined angle.
  • the two levers can be fixed relative to one another in different angular positions within the predetermined angle.
  • the clamping or locking mechanism has a toothing fixed in a rotationally fixed manner on the second lever, at least one pawl pivotably mounted on the first lever and loaded in the direction of the toothing, which is in engagement with the toothing in a locking position.
  • the clamping or latching mechanism also has a first control disk rotatably mounted about the common axis, with which the at least one pawl can be disengaged from the toothing in an adjustment direction after the predetermined angle has been exceeded, so that when disengaged with the pawl brought to the toothing by driving over the predetermined angle in a return direction, the two levers can be pivoted back into the basic position.
  • the first control disk is frictionally engaging on the toothing and can be rotated by a switching angle relative to the first lever.
  • the clamping mechanism has a spring element with which the pawl can be pressed against the toothing.
  • the first lever has a first cover and a second cover, the spring element circumferentially enclosing the space between lever heads of the cover.
  • the spring element In addition to the pressure on the pawl, the spring element also enables the toothing, the control disks and the pawl to be protected from dirt, which further increases the service life of the swivel fitting.
  • the toothing is designed as at least one at least partially circular toothed disk with external toothing formed on a partially circular outer edge, which is coupled to the second lever via a power shaft.
  • the pawl has a swivel arm with the teeth facing the axis of rotation of the lever.
  • the first control disk is designed as a plate spring or spring plate. This makes it possible to save the first spring element.
  • a control disk designed in this way is inexpensive to manufacture and can be installed in the clamping mechanism in a simple manner and ensures sufficient frictional contact between the first control disk and the toothing.
  • the clamping mechanism has a spring element with which the at least one pawl can be pressed against the toothing.
  • the first control disk To move the first control disk relative to the toothed disk, it preferably has a recess in which a control bolt attached to the first lever is received.
  • the recess is dimensioned in such a way that the control bolt can be displaced by the switching angle relative to the first control disk.
  • a switchover contour is preferably provided at a distance from the recess on an outer circumference of the first control disk, with which the pawl can be pivoted from a latching position with the toothing into a non-latching position.
  • the switchover contour lies in one of the teeth of the intended recess of the pawl adjacent to the teeth that form an internal toothing.
  • edges of the pawl enclosing the recess serve as support surfaces for supporting the pawl on the switching contour of the first control disk.
  • the switchover contour is shaped in such a way that the pawl is held out of engagement with the toothing, supported on a first support surface of the switchover contour, when the levers are adjusted relative to one another in the adjustment direction from a predetermined adjustment angle.
  • the switching contour is shaped in such a way that the pawl is guided in contact with the toothing when the levers are adjusted relative to one another in the adjustment direction.
  • This variant of the switching contour enables the pawl to click into place audibly when moving in the direction of adjustment.
  • the desired locking position is slightly exceeded, so that when the swivel fitting is loaded and the lever is pivoted relative to it in the return direction, the pawl slips off the switching contour of the control disc and engages in the toothing.
  • the toothing is designed in one piece with the power shaft, in particular as a sintered part, with the two control disks being arranged to the side of the toothed disk.
  • toothing and the power shaft are separate components, in which case the toothing is coupled to the power shaft in a rotationally fixed manner.
  • a second control disk which is mounted rotatably about the common axis, is of the toothing can be driven and rotatably supported by a switching angle relative to the toothing.
  • the second control disk is designed as an annular disk with an elongated hole that accommodates the common axis.
  • the second control disk preferably has a switching arm which extends radially outward in the direction of the longitudinal extent of the elongated hole and which is received in a recess formed on the circumferential edge of the toothed disk, the recess in the adjustment direction through a first stop in the area of the external toothing and in the return direction a second stop is limited in the area of an elevation adjoining the external toothing.
  • a first contact surface of the switch arm facing the first stop and an outer flank of an edge tooth formed on the free end of the pawl are shaped according to a further embodiment variant such that the pawl can be pushed away from the external toothing by the switch arm when the lever moves in the return direction.
  • a radially outer end edge of the switching arm protrudes radially outwards in a switchover position over the external toothing.
  • a ramp adjoining the radial displacement of the second control disk is formed on a circular section of the annular disk.
  • the furniture according to the invention is characterized by a swivel fitting fastened to it as described above.
  • the reference numeral 100 denotes a piece of furniture designed here as upholstered furniture, which is designed here as seating furniture, in particular as an armchair, with a furniture body 101, a backrest 502 and an armrest or headrest 103.
  • the armrest or headrest 503 is in different positions attached to the furniture body 101 so as to be latched.
  • a swivel fitting provided here with the reference number 1, with which it is possible to move the armrest or headrest 103 out of the position shown in FIG Figure 26 basic position shown in Figure 27 angled position shown in Figure 28 to adjust shown upright position and to lock in these respective positions.
  • the swivel fitting 1 has a first lever 2 and a second lever 3, which are mounted pivotably relative to one another about a common axis D from a basic position by a predetermined angle ⁇ .
  • the swivel fitting 1 also has a clamping mechanism with which the two levers 2, 3 can be fixed relative to one another in different angular positions within the predetermined angle ⁇ .
  • the clamping mechanism has a toothing 4 fixed in a rotationally fixed manner on the second lever 3 as well as at least one pawl 5 pivotably mounted on the first lever 2 and loaded in the direction of the toothing 4, which is in engagement with the toothing 4 in a latching position.
  • the clamping mechanism also has a first control disk 7 rotatably mounted about the common axis D, with which the at least one pawl 5 can be brought out of engagement with the toothing 4 in an adjustment direction V after passing the predetermined angle ⁇ , so that at pawl 5 brought out of engagement with the toothing 4 by overriding the predetermined angle ⁇ in a return direction R, the two levers 2, 3 can be pivoted back into the basic position.
  • the first control disk 7 can be carried along in a frictionally engaged manner on the toothing 4 and is rotatably supported by a switching angle ⁇ relative to the first lever 2.
  • the first lever 2 here consists of two essentially structurally identical covers, namely a first cover 2a and a second cover 2b.
  • Each of these covers 2a, 2b has a lever arm 21 which merges into a lever head 23 via a bending area 22.
  • a circular receptacle 25 is provided, which is used to lead through a power shaft 6 with a polygonal outer surface.
  • the toothing 4 as well as the first control disk 7 and a second control disk 9 are accommodated between the lever heads 23 of the first cover 2a and the second cover 2b.
  • the toothing 4 has a toothed disk 41 which is designed in one piece with the power shaft 6, in particular as a sintered part.
  • the power shaft 6 is designed for a non-rotatable connection to the second lever 3 with, for example, a polygonal outer contour 61.
  • the power shaft 6 also has a receptacle 62 in which a central bolt 12 is received, with which the two levers 2, 3 are axially fixed to one another.
  • the toothed disk 41 has, as in Figures 2 to 4 is shown, an integrally formed on a part-circular outer edge external toothing 42.
  • the pawl 5 used for locking with the toothing 4 is pivotably mounted on the first lever 2 via a pawl bolt 59 formed here on the pawl.
  • the pawl bolt 59 extends between the two lever heads 23 of the first cover 2a and the second cover 2b.
  • the first control disk 70 is, as in FIGS Figures 4 to 6 shown, designed as a disc spring or spring plate which is arranged laterally on the toothed disk 41 of the toothing 4.
  • annular disk 10 pushed onto a section of the power shaft 6 presses the first control disk 70 under pretension against the toothed disk 41 of the toothing 4.
  • the annular disk 10 is, for example, in the manner of a shaft lock with a press fit onto the outer contour 61 of the power shaft 6 pressed on.
  • annular disk 10 has tongues extending radially inward from an annular base body, as in FIG Figure 4 is shown.
  • FIG Figures 6 and 7th A plan view of an embodiment of the first control disk 7 is shown in FIG Figures 6 and 7th shown.
  • the control disk 7 consists essentially of a ring 71 with a central recess 72 through which the power shaft 6 extends in the assembled state, but is not coupled to it in a rotationally fixed manner.
  • the control disk 7 has a recess 73 on an outer circumference in which a control pin 8 extending on the first lever 2, here between the lever heads 23 of the first cover 2a and the second cover 2b, is received.
  • the recess 73 is dimensioned in such a way that the control pin 8 can be displaced by the switching angle ⁇ relative to the control disk 7.
  • the width of the recess 73 in the circumferential direction is correspondingly larger than the diameter of the control pin 8.
  • the width of this recess 73 is dimensioned such that the control disk 7 can be moved by the switching angle ⁇ relative to the control pin 8.
  • a spring element 11 is provided which is arranged between the lever heads 23 of the first cover 2a and the second cover 2b and surrounds the gap circumferentially.
  • this second spring element 11 which is designed here as a leaf spring and also serves to cover the space between the lever heads 23 of the first cover 2a and the second cover 2b, are bent in the direction of the pawl 5 and thus press the pawl 5 steadily in the direction of the external toothing 42 of the toothed disk 41.
  • the second control disk 9 is preferably arranged on the side of the toothed disk 41 opposite the first control disk 7.
  • the second control disk 9 preferably has an annular disk 91 with an elongated hole 93 receiving the common axis D. The part of the power shaft 6 protruding on this side of the toothed disk 41 is pushed into the elongated hole 93.
  • the external toothing 42 of the toothed disk 41 projects axially slightly beyond the side surface of the toothed disk 41 on this side of the toothed disk 41.
  • the second control disk 9 lies in the mounted position in this recess.
  • the width of the ring of the ring disk 91 varies over the circumference, so that when the ring disk rests on the control pin 8 during a pivoting process of the swivel fitting 1, depending on the width of the ring disk, a radial displacement of the second control disk takes place.
  • an elevation 43 extending radially beyond the external toothing 42 and having a recess 44 for receiving a switching arm 92 of the second control disk 9 extending radially outward in the direction of the longitudinal extension of the elongated hole 93 is formed.
  • the recess 44 extends over a partial angular region of the elevation 43 and a portion of the external toothing 42.
  • the recess is limited in the adjustment direction V by a first stop 47 in the region of the external toothing 42.
  • the recess 44 is limited by a second stop 45 in the area of the elevation 43 adjoining the external toothing 42.
  • the elongated hole 93 of the second control disk 9 makes it possible to move the second control disk 9 radially in relation to the power shaft.
  • a ramp 94 is formed on the outer edge of the annular disk 91, so that when the ramp 94 is driven down, the contact of the control pin 8 causes a radial displacement of the annular disk 91, whereby a radially outer end edge of the switching arm 92 is brought from a position radially inside the external toothing 42 into a position radially outside the external toothing 42 protruding.
  • a movement of the first lever 2 relative to the second lever 3 opposite to the adjustment direction V is referred to as the return direction R.
  • control disk 7 is positioned in the basic position in such a way that a second support surface 76 of a switching contour 74 of the control disk 7 rests on a second support surface 56 of the pawl 5, whereby the teeth 52 of the pawl 5 are out of engagement with the toothing 4.
  • control bolt 8 rests against a right side edge of the recess 73 of the control disk 7.
  • the pawl 5, which is fixedly but pivotably attached to the first lever 2 via the fixing bolt 9, is moved in the adjustment direction V.
  • the switching contour 74 slides down from the second support surface 56 of the pawl 5 and dips into the recess 54 of the pawl 5.
  • the pawl 5 is pressed into the external toothing 42 of the toothing 4 into a first latching position by means of the spring element 11. This first latching position is reached when the pawl 5 hits the toothing 4 audible. This first latching position takes place preferably when the first lever 2 is pivoted relative to the second lever 3 by 5 °.
  • the control disk 7 is held in a frictionally locking manner on the toothed disk 41 during this first pivoting movement.
  • the second lever 2 is moved slightly in the return direction R due to the preferred shape of the teeth of the toothing 4 and the teeth 52 of the pawl 5, preferably by an angle of approximately 2 degrees.
  • the geometry of the teeth 52 of the pawl 5 and the external toothing 42 of the toothing 4 is selected in such a way that a shift in the adjustment direction is made possible and a shift in the return direction is hindered.
  • control disk 7 Since the control bolt 8 moves within the recess 73 of the control disk 7 during this pivoting movement, the control disk 7 remains stationary in place during this pivoting movement due to friction.
  • the pawl 5 itself is pushed down by the pivoting movement of the second support surface of the switching contour 74 of the control disk 7, so that the teeth 52 of the pawl 5 engage with the external toothing 42 of the toothed disk 41. This position is in Figure 19 shown.
  • the radially outer end edge of the switching arm 92 is extended to the same height as the elevation 43, as a result of which the action diameter of the second control disk 9 increases.
  • This first contact surface 96 of the switching arm 92 and the outer flank 57 of the edge tooth formed on the free end of the pawl 5 are shaped here in such a way that the pawl can be pushed away from the external toothing 42 by the switching arm 92 when the levers 2, 3 move relative to the restoring direction R.
  • the setting angle of the outer flank 57 and the first contact surface 96 of the switching arm 92 is preferably between 8 ° and 12 °, in particular approximately 10 ° relative to a radial line of the axis of rotation D.
  • the second control disk 9 remains clamped between the pawl 5 and the control pin 8, which is made possible by the angular width of the recess 44.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Seats For Vehicles (AREA)
  • Hinges (AREA)
EP21161084.5A 2017-05-11 2018-05-07 Ferrure pivotante et meuble Pending EP3847928A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017110253.1A DE102017110253A1 (de) 2017-05-11 2017-05-11 Schwenkbeschlag und Möbel
EP18722545.3A EP3621488B1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble
PCT/EP2018/061682 WO2018206486A1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP18722545.3A Division EP3621488B1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble

Publications (1)

Publication Number Publication Date
EP3847928A1 true EP3847928A1 (fr) 2021-07-14

Family

ID=62116480

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18722545.3A Active EP3621488B1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble
EP21161084.5A Pending EP3847928A1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18722545.3A Active EP3621488B1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble

Country Status (8)

Country Link
US (1) US11272787B2 (fr)
EP (2) EP3621488B1 (fr)
CN (1) CN110612048B (fr)
DE (1) DE102017110253A1 (fr)
ES (1) ES2870773T3 (fr)
PL (1) PL3621488T3 (fr)
RU (1) RU2762656C2 (fr)
WO (1) WO2018206486A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102019113248A1 (de) 2019-05-20 2020-11-26 Hettich Franke Gmbh & Co. Kg Schwenkbeschlag und Möbel
DE102019119307A1 (de) 2019-07-16 2021-01-21 Hettich Franke Gmbh & Co. Kg Möbel und Verfahren zur Montage eines Möbels
US11590863B2 (en) * 2021-01-26 2023-02-28 Creative Cedar Designs, Inc. Seat reclining mechanism with protective cover
DE102021205159B4 (de) * 2021-05-20 2023-07-06 Bos Gmbh & Co. Kg Armlehnenanordnung für ein Kraftfahrzeug

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EP2544567B1 (fr) 2010-03-12 2014-02-12 Hettich Franke GmbH & Co. KG Ferrure à cran d'arrêt

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Publication number Priority date Publication date Assignee Title
EP1284447A1 (fr) * 2001-08-13 2003-02-19 Franke GmbH & Co. KG Ferrure pivotante
EP2544567B1 (fr) 2010-03-12 2014-02-12 Hettich Franke GmbH & Co. KG Ferrure à cran d'arrêt

Also Published As

Publication number Publication date
US20210007488A1 (en) 2021-01-14
ES2870773T3 (es) 2021-10-27
US11272787B2 (en) 2022-03-15
WO2018206486A1 (fr) 2018-11-15
CN110612048A (zh) 2019-12-24
RU2019137092A3 (fr) 2021-08-20
DE102017110253A1 (de) 2018-11-15
PL3621488T3 (pl) 2021-08-02
CN110612048B (zh) 2023-05-19
EP3621488A1 (fr) 2020-03-18
RU2019137092A (ru) 2021-06-11
RU2762656C2 (ru) 2021-12-21
EP3621488B1 (fr) 2021-03-10

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