EP3621489B1 - Ferrure pivotante et meuble - Google Patents

Ferrure pivotante et meuble Download PDF

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Publication number
EP3621489B1
EP3621489B1 EP18722546.1A EP18722546A EP3621489B1 EP 3621489 B1 EP3621489 B1 EP 3621489B1 EP 18722546 A EP18722546 A EP 18722546A EP 3621489 B1 EP3621489 B1 EP 3621489B1
Authority
EP
European Patent Office
Prior art keywords
toothing
lever
pawl
pivot fitting
control disk
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.)
Active
Application number
EP18722546.1A
Other languages
German (de)
English (en)
Other versions
EP3621489A1 (fr
Inventor
Gerd Stauss
Steffen Grathwol
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
Priority to PL18722546T priority Critical patent/PL3621489T3/pl
Publication of EP3621489A1 publication Critical patent/EP3621489A1/fr
Application granted granted Critical
Publication of EP3621489B1 publication Critical patent/EP3621489B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C1/04—Hairdressers' or similar chairs, e.g. beauty salon chairs
    • A47C1/06—Hairdressers' or similar chairs, e.g. beauty salon chairs adjustable
    • 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 to a piece of furniture with such a swivel fitting.
  • a generic swivel fitting is for example from EP 2 767 188 A1 known.
  • Another swivel fitting is from the 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 a piece of furniture such as upholstered furniture, while the second lever is used, for example, to fix a pivotably mounted headrest, which is fixed in predetermined locking steps with the help of the pivot fitting from an initial position.
  • 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.
  • the object is also achieved by a piece of furniture with such a swivel fitting according to claim 17.
  • the pivot fitting according to the invention in particular for movable furniture parts on furniture, is defined in claim 1. It has a first lever and a second lever which are mounted pivotably relative to one another about a common axis from a basic position through a predetermined angle.
  • the two levers can be fixed relative to one another in different angular positions within the predetermined angle.
  • the clamping mechanism has a toothing fixed in a rotationally fixed manner on the second lever, at least one pawl which is pivotably mounted on the first lever and loaded in the direction of the toothing and which is in engagement with the toothing in a latching position.
  • the clamping mechanism also has a 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 from the basic position, so that when the pawl is disengaged from the toothing the two levers can be pivoted back into the basic position by driving over the predetermined angle in a return direction.
  • control disk can be carried along in a frictionally engaged manner on the toothing and is mounted rotatably by a switching angle relative to the first lever.
  • the clamping mechanism has a first spring element with which the control disk is pressed against the toothing in a frictionally engaged manner.
  • the first spring element is preferably designed as a plate spring or spring plate.
  • a spring element designed in this way is inexpensive to manufacture and can be installed in a simple manner in the clamping mechanism and ensures sufficient frictional contact between the control disk and the toothing.
  • control disk is designed as a plate spring or spring plate. This makes it possible to save the first spring element.
  • the frictional entrainment of the control disk with the toothing can take place both directly through direct contact between the control disk and the toothing and indirectly through frictional entrainment of the control disk by a further component connected non-rotatably to the toothing.
  • the clamping mechanism has a second spring element with which the at least one pawl can be pressed against the toothing.
  • the toothing is designed as at least one at least part-circular toothed disk with external toothing formed on a part-circular outer edge, which is coupled to the second lever via a power shaft.
  • the pawl has a swivel arm with teeth facing the axis of rotation of the lever.
  • the toothing is preferably designed in the form of two part-circular toothed disks, the control disk being arranged between the toothed disks so that the pressure of the first spring element on one of the part-circular toothed disks causes the control disk to be sufficiently frictionally clamped between the two part-circular toothed disks so that the Control disk, depending on the application of force, either moves with the toothed disks or moves relative to the toothed disks.
  • the pawl is preferably formed in two parts from two pawl elements, one of the pawl elements being arranged in a plane with one of the toothed disks, so that in each case one of the pawl elements is in operative connection with one of the toothed disks in the latching position.
  • control disk In order to move the control disk relative to the toothed disks, it preferably has a recess in which a control bolt attached to the first lever is received.
  • the recess is dimensioned such that the control bolt can be displaced by the switching angle relative to the control disk.
  • a switchover contour is preferably provided at a distance from the recess on an outer circumference of the 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 a tooth of the intended recess of the pawl adjacent to the teeth that form an internal toothing.
  • edges of the pawl bordering the recess serve as support surfaces for supporting the pawl on the switching contour of the control disk.
  • the switchover contour is shaped such 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 switchover 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 an audible locking of the pawl when moving in the adjustment direction.
  • the desired latching 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 down from the switching contour of the control disc and engages in the toothing.
  • the toothing is designed as circular internal toothing arranged on the second lever, and the at least one pawl has a swivel arm with teeth facing away from the axis of rotation of the lever.
  • This embodiment variant of a swivel fitting according to the invention also enables the levers to be locked to one another, even in the return movement, due to the control disc lying frictionally on the toothing.
  • control disk preferably has at least one elongated hole in which a fixing and control bolt attached to the first lever is received.
  • the longitudinal extension of the elongated hole is dimensioned such that the fixing and control bolt can be displaced by the switching angle relative to the control disk without moving the control disk itself relative to the second lever.
  • control disk preferably has a switching contour protruding from the plane of the control disk in the direction of the pawl, spaced from the elongated hole, with which the pawl can be pivoted from a locking position with the toothing into a non-locking position.
  • the switchover contour is preferably designed as a tab punched out of an annular disk of the control disk and bent towards the pawl. This tab fixes the latch in the non-latching position.
  • the toothing itself is designed as a circular internal toothing formed on a lever head of the second lever.
  • the toothing is designed as a circular toothed disk with internal toothing formed thereon and held between the lever heads of the second lever.
  • the cover, the toothing and the control disk is accommodated between the lever heads, the second spring element between the lever heads, the toothing and the Control disk circumferentially encompassing, is arranged.
  • the second spring element also enables the toothing, the control disc and the pawl to be protected from dirt, which further increases the service life of the swivel fitting.
  • Reference numeral 500 denotes a piece of furniture designed here as upholstered furniture, which is designed here as seating furniture, in particular as an armchair, with a body 501, a backrest 502 and an armrest or headrest 503.
  • the armrest or headrest 503 is in different positions attached to the body 501 so as to be latched.
  • pivot fitting 1 for which various design variants of pivot fittings 100, 200, 300 are described below, it is also possible to use this arm or headrest 503 from the embodiment shown in FIG Figure 33 position shown in Figure 32 to adjust the position shown without first moving the armrest or headrest 503 into Figure 31 to have to pivot back the basic position shown.
  • a swivel fitting 1, 100, 200, 300, 400 has a first lever 2, 120, 220, 320, 420 and a second lever 3, 130, 230, 330, which around a common axis D consists of a Basic position are mounted pivotable to each other through a predetermined angle ⁇ .
  • the pivot fitting 1, 100, 200, 300, 400 also has a clamping mechanism with which the two levers 2, 120, 220, 320, 420, 3, 130, 230, 330 in different angular positions within the predetermined angle ⁇ relative to one another are fixable.
  • the clamping mechanism has a toothing 4, 140, 240, 340, 440 fixed in a rotationally fixed manner on the second lever 3, 130, 230, 330 and at least one pivotably mounted on the first lever 2, 120, 220, 320, 420 and in the direction of the toothing 4 , 140, 240, 340, 440 loaded pawl 5, 150, 250, 350,450, which is in a latching position in engagement with the toothing 4, 140, 240, 340, 440.
  • the clamping mechanism also has a control disk 7, 170, 270, 370, 470 which is rotatably mounted about the common axis D and with which the at least one pawl 5, 150, 250, 350, 450 moves from the basic position in an adjustment direction V can be brought out of engagement with the toothing 4, 140, 240, 340, 440, so that when the pawl 5, 150, 250, 350 is disengaged from the toothing 4, 140, 240, 340, 440 by overriding the predetermined Angle ⁇ in a return direction R, the two levers 2, 120, 220, 320, 420, 3, 130, 230, 330 can be pivoted back into the basic position.
  • the control disk 7, 170, 270, 370, 470 can be carried along with frictional engagement on the toothing 4, 140, 240, 340, 440 and is rotatably supported by a switching angle ⁇ relative to the first lever 2, 120, 220, 320, 420.
  • the first lever 2 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 region 22.
  • a circular receptacle 25 is provided, which serves to lead through a power shaft 6 with a polygonal outer surface.
  • any other shape that creates a positive connection can of course be selected between the lever heads 23 of the first cover 2a and the second cover 2b the toothing 4 and the control disk 7 are added.
  • the toothing 4 is designed in the form of two part-circular toothed disks 4a, 4b.
  • Each of the toothed disks 4a, 4b has an external toothing formed on a partially circular outer edge.
  • the toothed disks 4a, 4b are provided with a recess 44 with a polygonal cross section corresponding to the power shaft 6 for receiving the power shaft 6.
  • the power shaft 6 extends through the receptacles 25 of the first cover 2a and the second cover 2b, the toothed disks 4a, 4b, a spring element 10 and through a receptacle 33 of the second lever 3, which also has a polygonal cross section corresponding to the power shaft 6, so that the toothing 4 is rotatably coupled to the second lever 3.
  • the pawl 5 used for locking with the toothing 4 is composed of two pawl elements 5a, 5b in this variant, with one of the pawl elements 5a, 5b in a plane with one of the toothed disks 4a, 4b is arranged.
  • the pawl elements 5a, 5b are pivotably mounted on the first lever 2 via a pawl bolt 9.
  • each of the pawl elements 5a, 5b has a bearing bore 53 in which the pawl bolt 9 is received.
  • the pawl pin 9 extends between the two lever heads 23 of the first cover 2a and the second cover 2b.
  • the control disk 7 is received between the two part-circular toothed disks 4a, 4b.
  • a top view of such a variant embodiment of a control disk 7 is shown in FIG Figure 4 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 on an outer circumference a recess 73 in which a control bolt 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 greater than the diameter of the control pin 8.
  • the width of this recess 73 is dimensioned such that the control disk 7 is displaceable by the switching angle ⁇ relative to the control pin 8 and the pawl pin 9.
  • the first spring element 10 which is designed as a plate spring and which, as in the Figures 1 and 2 shown, on the one hand rests on the lever head 32 of the second lever 3 and on the other hand on the end face of a bearing ring 13, which presses with a neck piece through the receptacle 25 of the second cover 2b of the first lever 2 against an end face of the second toothed part 4b.
  • the counterpressure is brought about by a neck piece of the power shaft 6 that extends through the receptacle 25 of the first cover 2a and rests against the end face of the first toothed part 4a.
  • a second spring element 11 is provided, which is arranged between the lever heads 23 of the first cover 2a and the second cover 2b and the Completely encloses the gap.
  • the two lower ends of this second spring element 11, which is designed here as a leaf spring and also serves to cover the gap between the lever heads 23 of the first cover 2a and the second cover 2b, are bent in the direction of the latch elements 5a, 5b and thus press the Ratchet elements 5a, 5b steadily in the direction of the external toothing 42 of the two toothing parts 4a, 4b.
  • a central bolt 12 which extends through a central bore in the power shaft 6 into a counter disk 14 on the outside of the lever head 32 of the second lever 3, is preferably used to axially fix the components of the swivel fitting 1.
  • the function of the swivel fitting 1 is based on the Figures 5 to 14 described.
  • 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 such 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 slips 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 second spring element 11. Reaching this first locking position can be heard when the pawl 5 hits the toothing 4.
  • This first latching position preferably takes place 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 between the two toothed parts 4a and 4b.
  • the frictional holding of the control disk 7 between the toothing parts 4a, 4b of the toothing 4 is effected, as described above, by the first spring element 10, which is designed here as a disk spring.
  • 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 alternative embodiment shown is the geometry of the switchover contour 74 'of the control disk 7 different from the switchover contour 74 (shown in FIG Figure 7 ), to the effect that the switching contour 74 'has a smaller angular width, so that the pawl 5 when the first lever 2 moves further out of the position shown in FIG Figure 6 position shown is moved in the adjustment direction V from one locking position to the next.
  • the geometry of the teeth 52 of the pawl 5 and the external toothing 42 of the toothing 4 is selected so that a shift in the adjustment direction is made possible and a shift in the return direction is hindered.
  • FIG 10 a switching position is shown in which the first lever 2 is pivoted by the maximum adjustment angle ⁇ with respect to the second lever 3.
  • the teeth 52 of the pawl 5 are on an elevation 43 of the Toothing 4 pushed on, so that the teeth 52 of the pawl 5 are lifted out of engagement with the external toothing 42 of the toothing 4.
  • control pin 8 moves within the recess 73 of the control disc 7 during this pivoting movement, the control disc 7 remains stationary in place due to friction during this pivoting movement.
  • the swivel fitting 100 works on the same principle. Here, too, a control disk 170 is pressed against a toothing 140 with a friction fit.
  • the toothing 140 is designed as an internal toothing integrated in the lever head 132 of the second lever 130.
  • the second lever 130 is mounted between the first cover 120a and the second cover 120b of the first lever 120.
  • a central bolt 102 is used to define the pivot axis D, which is received in a bore 124 of the two covers 120a, 120b and in a receptacle 135 in the lever head 132 of the second lever 130.
  • the swivel fitting 100 here has two pawls 150 which are spaced apart from one another and are arranged point-symmetrically about the axis of rotation D and are provided with external teeth 152 in accordance with the internal teeth 140 on the second lever 130.
  • the pawls 150 are fixed in a rotationally fixed manner on the first cover 120a and the second cover 120b in respective receptacles 125 via respective fixing and control bolts 180, 190.
  • the pawls 150 are pressed against the toothing 140, which is designed as internal toothing, by a second spring element 101, preferably designed as a U- or V-shaped bent leaf spring, with which the teeth 152 of the pawls 150 are pressed into the internal toothing of the toothing 140.
  • the control disk 170 has as in Figure 16 can be seen in this case an annular disc 171 with a central bearing opening 172 through which the central bolt 102 extends.
  • elongated holes 173 are also provided through which the fixing and control bolts 180, 190 extend.
  • the length of these elongated holes 173 is designed according to the angular width of the recess 73 of the control disk 7 of the first embodiment in order to allow a pivoting movement of the first lever 120 relative to the second lever 130 by a predetermined angle without the control disk 170 being rotated.
  • the preferably four switchover contours 174 of the control disk 170 are formed in this embodiment as tabs punched out of an annular disk 171 and bent towards the pawl 150, as is exemplified in FIG Figures 16a and 16b is shown.
  • the bearing opening 172 is bordered by a cylindrical neck piece 175.
  • the first spring element 110 is, as in FIG Figure 15 shown, designed as an annular spring plate which is fixed in place on the second lever 130 via pins 133.
  • the pressure force acting axially towards the toothing 140 is brought about by support tongues 111 which are integrally formed on the first spring element 110 and are oriented radially inward, which ensures the necessary frictional engagement between the control disk 170 and the toothing 140.
  • elongated holes 134 are provided, which are used to receive the fixing and control bolts 180, 190.
  • the length of these elongated holes 134 is dimensioned such that the two levers 120, 130 can be pivoted relative to one another by the predetermined angle ⁇ to one another.
  • Figure 17 shows the basic position of the two levers 120, 130 relative to one another. In this basic position, the two pawls 150 are out of engagement with the internal toothing of the toothing 140.
  • the switching contours 174 designed as tabs rest on a second support surface 156 of the pawls, as shown in FIG Figure 17 is shown.
  • Figure 18 shows the switching position of levers 120, 130 with respect to one another, pivoted by the maximum angle ⁇ . In this position, some of the teeth 152 of the pawls 150 are pushed onto an elevation 141 of the toothing 140.
  • this elevation 141 is molded onto the toothing 140.
  • the elevation 141 is also conceivable to design the elevation 141 as a mountable insert that is placed on a corresponding position of the toothing 140.
  • the pawls 150 are again pushed onto the switching contour 174 of the control disk 170, which is stationary at the beginning of the pivoting movement, so that as in FIG Figure 19 shown, a second support surface 156 of the pawls 150 rests on the switching contours 174 designed as tabs.
  • the pawls 150 are moved away from the respective switchover contour 174, so that the teeth 152 of the pawls 150 strike the toothing 140, so that by a subsequent slight pivoting of the first lever 120 relative to the second lever 130 in the return direction R the in Figure 21 shown locking position is reached.
  • FIGS. 22 and 23 show exploded views of further design variants of a pivot fitting 200, 300 according to the invention.
  • the pivot fittings 200, 300 essentially correspond to that based on FIG Figures 15 to 21 swivel fitting 100 described.
  • the toothing 243 is also designed here as internal toothing into which the teeth 252 of pawls 250 engage.
  • the ring body 241 of the toothing 240 has, analogously to that in FIG Figure 1
  • the pivot fitting 1 shown has a polygonal receptacle 242 into which a power shaft 260 engages.
  • the power shaft 260 also engages in the second lever 230, there in a correspondingly shaped receptacle 233 with a polygonal cross section, so that the second lever 230 is coupled to the toothing 240 in a rotationally fixed manner.
  • the first spring element 210 and the control disk 270 are corresponding to those in FIGS Figures 15 to 21 embodiment of the swivel fitting 100 described.
  • the first rotary lever 320 is designed such that a lever head 322, which has a receptacle 323 with a polygonal cross section, extends in a straight line from a lever arm 321.
  • the cover of the first lever 320 which includes the clamping mechanism, are designed here as separate components 324, 325, so that accordingly the first cover 324 and the second cover 325 have corresponding central recesses 327 with a polygonal cross section, so that the covers 324, 325 are rotationally fixed to the first lever 320 are coupled.
  • Figure 24 shows an exploded view of a further embodiment of a swivel fitting 400 according to the invention without showing the second lever, which is preferably the one in Figures 1 to 14 shown first embodiment corresponds to lever 3 described.
  • the swivel fitting 400 corresponds in essential parts to that based on FIG Figures 1 to 14 swivel fitting described 1.
  • the swivel fitting 400 shown only has a toothing 440 formed on an annular body 441.
  • the toothing 440 is formed in one piece with the power shaft 460, in particular as a sintered part.
  • the power shaft 460 is designed for a non-rotatable connection to the second lever, not shown here, with a polygonal outer contour 461, for example.
  • the power shaft 460 also has a receptacle 462 in which the central bolt 12 is received.
  • This structure also means that the second lever is coupled to the toothing 440 in a rotationally fixed manner.
  • the control disk 470 is in this variant, as in Figure 28 shown, designed as a plate spring or spring plate which is arranged laterally on the ring body 441 of the toothing 440.
  • annular disk 480 pushed onto a section of the power shaft 460 presses the control disk 470 under pretension against the annular body 441 of the toothing 440.
  • the annular disk 480 is, for example, in the manner of a shaft lock with a press fit onto the outer contour 461 the power shaft 460 pressed. It is also conceivable to weld the annular disk 480 to the power shaft 460. It is conceivable to provide an undercut on the outer contour 461 of the power shaft 460, which can be pressed onto the annular disk 480. About that In addition, it is also conceivable to hold down the washer 480 with a locking ring or to replace it with one.
  • the annular disk 480 has tongues 482 extending radially inward from an annular base body 481 to prevent rotation with respect to the power shaft 460, as in FIG Figure 27 is shown.
  • the swivel fitting 400 accordingly also has only one pawl 450.
  • This pawl 450 is, as in Figure 26
  • it is formed in one piece with a pawl bolt 490, preferably as a sintered part, and is pivotably mounted on the first lever 420 via this. This simplifies assembly due to the reduced number of components.
  • the switching contour 474 shown corresponds to the variant described with reference to the first exemplary embodiment, the switching contour 474 being shaped in such a way that the pawl 450 when the levers are adjusted relative to one another in the adjustment direction from a predetermined adjustment angle, supported on a first support surface 475 of the switching contour 474, is held out of engagement with the toothing is what, as described above, enables silent adjustment when the levers are adjusted relative to one another in the adjustment direction, since the pawl 450 does not come into engagement with the toothing 440 due to the support on the switchover contour 474.
  • This variant of the switching contour enables an audible locking of the pawl when adjusting in the adjustment direction.
  • pivot axis is oriented vertically or obliquely in space
  • a backrest of a chair can also be rotated about a vertical pivot axis D, so that one does not adjust the backrest inclination, but the angular position of the backrest in space.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Pivots And Pivotal Connections (AREA)

Claims (18)

  1. Ferrure pivotante (1, 100, 200, 300, 400), en particulier pour des parties de meuble mobiles sur des meubles, présentant
    - un premier levier (2, 120, 220, 320, 420) et un deuxième levier (3, 130, 230, 330) qui sont montés de manière à pouvoir pivoter l'un par rapport à l'autre d'un angle prédéterminé (α) autour d'un axe commun (D) à partir d'une position de base,
    - un mécanisme de serrage au moyen duquel les deux leviers (2, 120, 220, 320, 420, 3, 130, 230, 330) peuvent être fixés l'un par rapport à l'autre dans différentes positions angulaires à l'intérieur de l'angle prédéterminé (α),
    - le mécanisme de serrage présentant :
    a. une denture (4, 140, 240, 340, 440) fixée de manière solidaire en rotation au deuxième levier (3, 130, 230, 330) ,
    b. au moins un cliquet (5, 150, 250, 350, 450) monté pivotant sur le premier levier (2, 120, 220, 320, 420) et sollicité en direction de la denture (4, 140, 240, 340, 440), lequel est en prise avec la denture (4, 140, 240, 340, 440) dans une position d'encliquetage,
    c. un disque de commande (7, 170, 270, 370, 470) monté rotatif autour de l'axe commun (D), au moyen duquel ledit au moins un cliquet (5, 150, 250, 350, 450) peut être mis hors de prise avec la denture (4, 140, 240, 340, 440) après avoir franchi l'angle prédéterminé (α) dans une direction de réglage (V) à partir de la position de base, de sorte que, lorsque le cliquet (5, 150, 250, 350, 450) est mis hors de prise avec la denture (4, 140, 240, 340, 440), les deux leviers (2, 120, 220, 320, 420, 3, 130, 230, 330) peuvent être à nouveau pivotés dans la position de base en franchissant l'angle prédéterminé (α) dans une direction de rappel (R),
    caractérisée en ce que
    - le disque de commande (7, 170, 270, 370, 470) peut être entraîné en contact de friction direct ou indirect avec la denture (4, 140, 240, 340, 440) et est monté de manière à pouvoir tourner d'un angle de commutation (β) par rapport au premier levier (2, 120, 220, 320, 420).
  2. Ferrure pivotante selon la revendication 1, caractérisée en ce que le disque de commande (7, 170, 270, 370) est réalisé sous la forme d'une rondelle-ressort ou d'une plaque-ressort (110, 210, 310).
  3. Ferrure pivotante selon la revendication 1, caractérisée en ce que le mécanisme de serrage (5, 150, 250, 350) présente un premier élément ressort (10, 110, 210, 310) avec lequel le disque de commande (7, 170, 270, 370) est pressé contre la denture (4, 140, 240, 340) par friction.
  4. Ferrure pivotante selon la revendication 3, caractérisée en ce que le premier élément ressort (10) est réalisé sous la forme d'une rondelle-ressort ou d'une plaque-ressort (110, 210, 310).
  5. Ferrure pivotante selon l'une des revendications précédentes, caractérisée en ce que le mécanisme de serrage présente un deuxième élément ressort (11, 101, 201, 301) avec lequel le cliquet (5, 150, 250, 350) peut être pressé contre la denture (4, 140, 240, 340).
  6. Ferrure pivotante selon l'une des revendications précédentes, caractérisée en ce que la denture (4) est réalisée sous la forme d'au moins un disque denté (4a, 4b) au moins partiellement circulaire avec une denture extérieure formée sur un bord extérieur partiellement circulaire, qui est couplée au deuxième levier (3) par l'intermédiaire d'un arbre de force (6) et le cliquet (5) présente un bras pivotant (51) avec des dents (52) tournées vers l'axe de rotation (D) des leviers (2, 3).
  7. Ferrure pivotante selon la revendication 6, caractérisée en ce que la denture (4) est réalisée d'une seule pièce avec l'arbre de force (6), en particulier sous la forme d'une pièce frittée, le disque de commande (7) étant disposé latéralement sur la denture.
  8. Ferrure pivotante selon la revendication 6, caractérisée en ce que la denture (4) est réalisée sous la forme de deux disques dentés (4a, 4b) partiellement circulaires, le disque de commande (7) étant disposé entre les disques dentés (4a, 4b) .
  9. Ferrure pivotante selon la revendication 8, caractérisée en ce que le cliquet (5) est réalisé en deux parties à partir de deux éléments de cliquet (5a, 5b), un élément de cliquet respectif (5a, 5b) étant disposé dans un plan avec un disque denté respectif (4a, 4b).
  10. Ferrure pivotante selon l'une des revendications 6 à 9, caractérisée en ce que le disque de commande (7) présente, sur une circonférence extérieure, un contour de commutation (74) avec lequel le cliquet (5) peut être pivoté d'une position d'encliquetage avec la denture (4) dans une position de non-encliquetage.
  11. Ferrure pivotante selon la revendication 10, caractérisée en ce que le cliquet (5) présente, à proximité des dents (52) formant une denture intérieure, un évidement (54) dans lequel le contour de commutation (74) s'engage dans la position d'encliquetage du cliquet (5) avec la denture (4).
  12. Ferrure pivotante selon l'une des revendications 10 ou 11, caractérisée en ce que le contour de commutation (74) est formé de telle sorte que, lors du réglage des leviers (2, 3) l'un par rapport à l'autre dans la direction de réglage (V), le cliquet (5) est maintenu en appui sur une première surface d'appui du contour de commutation (74), hors de prise avec la denture (4), à partir d'un angle de réglage prédéterminé (γ).
  13. Ferrure pivotante selon l'une des revendications 5 à 12, caractérisée en ce que le premier levier (2, 420) présente un premier couvercle (2a, 420a) et un deuxième couvercle (2b, 420b), la denture (4, 440) ainsi que le disque de commande (7, 470) étant reçus entre des têtes de levier (23, 423) des couvercles (2a, 2b, 420a, 420b), le deuxième élément ressort (11) étant disposé entre les têtes de levier (23, 423), en entourant circonférentiellement la denture (4, 440) et le disque de commande (7, 470).
  14. Ferrure pivotante selon l'une des revendications 1 à 5, caractérisée en ce que la denture (140, 240, 340) est réalisée sous la forme d'une denture intérieure circulaire disposée sur le deuxième levier (130, 230, 330), et ledit au moins un cliquet (150, 250, 350) présente un bras pivotant (151, 251, 351) avec des dents (152, 252, 352) tournées à l'opposé de l'axe de rotation (D) des leviers (120, 130, 220, 230, 320, 330).
  15. Ferrure pivotante selon l'une des revendications 13 à 14, caractérisée en ce que la denture (140, 340) est réalisée sous la forme d'une denture intérieure circulaire formée sur une tête de levier (132, 332) du deuxième levier (130, 330).
  16. Ferrure pivotante selon l'une des revendications 13 à 14, caractérisée en ce que la denture (240) est réalisée sous la forme d'un disque denté circulaire reçu entre les têtes de levier (223, 323) du deuxième levier (230) et sur lequel est formée une denture intérieure.
  17. Meuble (500) comportant une ferrure pivotante (1, 100, 200, 300, 400) selon l'une des revendications précédentes.
  18. Meuble (500) selon la revendication 17, caractérisé en ce que la ferrure pivotante (1, 100, 200, 300, 400) fixe de manière réglable un accoudoir (503) ou d'autres parties de meuble réglables à un corps (501) d'un meuble (500) réalisé sous la forme d'un meuble d'assise ou de couchage.
EP18722546.1A 2017-05-11 2018-05-07 Ferrure pivotante et meuble Active EP3621489B1 (fr)

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DE102017110246.9A DE102017110246A1 (de) 2017-05-11 2017-05-11 Schwenkbeschlag und Möbel
PCT/EP2018/061683 WO2018206487A1 (fr) 2017-05-11 2018-05-07 Ferrure pivotante et meuble

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CN (1) CN110612047B (fr)
DE (1) DE102017110246A1 (fr)
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PL (1) PL3621489T3 (fr)
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Publication number Publication date
US20210007487A1 (en) 2021-01-14
DE102017110246A1 (de) 2018-11-15
PL3621489T3 (pl) 2021-08-02
EP3621489A1 (fr) 2020-03-18
CN110612047A (zh) 2019-12-24
US10993535B2 (en) 2021-05-04
WO2018206487A1 (fr) 2018-11-15
CN110612047B (zh) 2022-11-22
RU2762644C2 (ru) 2021-12-21
RU2019137012A3 (fr) 2021-08-16
RU2019137012A (ru) 2021-06-11
ES2872254T3 (es) 2021-11-02

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