Classifications

• • 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
  • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
  • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
• • 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
  • A47C1/0242—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 electric motors

Definitions

• the invention relates to a piece of furniture, in particular seating of the type mentioned in the preamble of claim 1.
• Such furniture are known for example in the form of motor-adjustable armchairs, which have mutually adjustable motor parts, for example, a relative to a seat part adjustable calf part for Abstut tion of a person resting on the chair in the leg or. Calf area.
• drive means For adjusting the parts of the Mobeis relative to each other drive means are provided which have a drive unit with an electric motor.
• the invention has for its object to provide a piece of furniture referred to in the preamble of claim 1, in which the second part is adjustable relative to the first part over a large adjustment
• the invention is overcome by the idea of an adjustment of the second part relative to the first part of the Mobeis in an adjustment, in which the first part relative to the second part in a union wesent similar adjustment, for example, a pivoting movement executes, by means of only one Drive unit.
• a further advantage of the teaching according to the invention is that an adjustment mechanism, via which the drive units are in operative connection with the second part of the furniture to be adjusted, can be made particularly compact and therefore space-saving, because, in contrast to known furniture in which the adjustment movement only is executed via a drive unit, for example, an adjustment mechanism with short and simple levers can be used.
• two or, if required by the respective requirements, more than two drive units can be provided, which are assigned to the second part. Under an assignment of the drive units to the second part is understood according to the invention that the drive units for Serve adjusting the second part.
• the drive units assigned to the second part can be arranged on the same. According to the invention, however, it is also possible for the drive units assigned to the second part to be arranged partially or completely on another part of the furniture, for example the first part or a base body.
• the adjustment movement of the second part relative to the first part can be any suitable one
• the substantially similar adjustment movement performed by the second part in the first and second kinematic phases may be a linear translational movement or a combination of a linear translational movement with a pivotal movement.
• An advantageous Wei ter Struktur the teaching of the invention provides that the adjustment is a pivoting movement.
• the drive units associated with the second part jointly form a pivoting drive with which particularly large pivoting angles of the second part can be achieved.
• a development of the aforementioned embodiment provides that the second part in the first kinetic phase is pivotable about a first pivot angle and in the second kinematic phase about a second pivot angle.
• the second part is pivoted about a first pivot angle by the first drive unit in the first kinematic phase, whereas in the second kinematic phase it is pivoted by the second drive unit by a second pivot angle.
• first pivot angle and / or the second pivot angle is about 90 ° and / or that a resulting from the first pivot angle and the second pivot angle third pivot angle is about 180 °.
• a particularly large pivoting range of the second part results relative to the first part.
• the pivoting of the second part relative to the first part in the first and the second kinematic phase can take place about a common pivot axis.
• An advantageous development of the teaching according to the invention provides, however, for the first kinematic phase to have a first pivot axis and the second kinematic phase one for the first
• Pivot axis spaced second pivot axis is assigned, such that the second part during the first kinematic phase about the first pivot axis and during the second kinematic phase about the second pivot axis is pivotable.
• the first drive unit and the second drive unit can be spatially separated from one another, which increases the design freedom with respect to the arrangement of the drive units relative to the second part.
• first pivot axis and the second pivot axis are substantially parallel to each other.
• a particularly simple construction of the adjustment mechanism results, via which the respective drive unit is in drive connection with the second part.
• the first Pivot axis is formed by a pivotally mounted on a base body of the furniture pivot shaft.
• At least one articulation lever is rotatably connected to the pivot shaft, which is in operative connection with the output member of the associated drive unit via an actuating element.
• the pivoting of the pivot shaft by means of the articulation lever which can be actuated for example by means of a linear drive.
• the actuating element is designed to be pressure-compressible, in particular rod-shaped or plate-shaped or as a lever, and one end of the actuating element is articulated and eccentrically connected to the articulation lever to the first pivot axis and the other end of the Actuating element is pivotally connected to the output member of the associated drive unit is connected.
• a particularly simple and robust construction results with few components.
• the or each attacking element is designed as a tab and / or that the or each attacking element is arc-shaped. Especially at The Aglasf ⁇ hrungsform with the arc-shaped Anreifele- ment results in a particularly compact design with low height and few components.
• Another development of the teaching according to the invention provides that with the or j edem attacking element preferably an axle rotatably connected, which forms the second pivot axis about which the second part is pivotally mounted.
• the second pivot axis is connected to the or each engagement element so that the second part is pivotably mounted on the first part via the engagement element and the first pivot axis.
• a refinement of the embodiment with the engagement element rotationally fixedly connected to the pivot shaft provides that the second drive unit is connected to the second part, and that an actuation element is provided which is in operative connection with the output element of the second drive unit.
• the second drive unit is arranged on the second part, wherein the second part is in drive connection via the second actuating element with the output member of the second drive unit.
• the actuator rod-shaped or plate-shaped or is designed as a lever.
• the actuating element is expediently articulated with the output member and / or the engaging element and eccentrically connected to the second pivot axis.
• first kinematic phase and the second kinematic phase succeed each other in time.
• the second part passes through the adjustment range associated with the first kinematic phase and the adjustment range associated with the second kinematic phase in chronological succession.
• first kinematic phase and the second kinematic phase may run at least partially overlapping at the same time or at least one time.
• the second part passes through the first kinematic phase and the second kinematic phase at least partially overlapping in time.
• another embodiment of the teaching according to the invention provides that at least one of the drive units has a linear drive.
• At least one of the drive units has a spindle drive.
• spindle drives are available as simple and inexpensive standard components and are robust and suitable for applying large forces.
• the output member of the spindle drive is a spindle nut, which is arranged against rotation and movable in the axial direction on a rotatably driven threaded spindle.
• Fig. 1 is a perspective view of an exemplary embodiment of an inventive furniture in the form of a chair
• FIG. 2 in perspective phantom view parts of an adjustment mechanism for adjusting a calf part of the furniture of FIG. 1
• Fig. 3 is a side view of parts of the adjustment mechanism of FIG. 2
• Fig. 4 is a perspective view of
• FIG. 6 in the same representation as FIG. 5 the chair according to FIG. 5 during the first kinematic phase of the adjustment movement in an adjustment position
• FIG. 7 in the same representation as FIG. 5 the chair according to FIG. 5 during the first kinematic phase of the adjustment movement in a further adjustment position
• FIG. 8 in the same representation as FIG. 5 the chair according to FIG. 5 at the end of the first kinematic phase and at the beginning of the second kinematic phase of the adjustment movement
• FIG. 10 in the same representation as FIG. 5 the chair according to FIG. 5 at the end of the second kinematic phase of the adjustment movement.
• FIG. 1 shows an exemplary embodiment of a piece of furniture according to the invention in the form of an armchair 2, which has a basic body 4 which has two laterally spaced-apart armrests 6, 8.
• a first part m shape of a seat part 10 is arranged, one end of which is adjustably connected to a second part, which is formed in this embodiment by a calf part 12 which supports a resting on the chair 2 person in Calf resp.
• Lower leg area serves.
• With the wad part 12 facing away from the end of the seat part 10 is adjustably connected to an upper body part 14, with the seat part 10 facing away from the end adjustable headboard 16 is connected.
• the upper body part 14 serves to support a person resting on the armchair 2 in the upper body region, while the head part serves for supporting a person resting on the armchair 2 in the head region.
• the calf part 12 is pivotable relative to the seat part 10, as explained in more detail below will be .
• Fig. 2 parts of an adjustment mechanism are shown, by means of which the calf part 12 is pivotable relative to the seat part 10.
• two drive units 18, 20 are associated with the calf part 12 in this embodiment, the adjustment being effected by means of the first drive unit 18 in a first kinematic phase of the adjustment movement, namely a pivoting movement, and in the second kinematics phase of the adjustment movement by means of the second drive unit 20 takes place, wherein the calf part 12 in the first kinematic phase and the second kinematic phase performs a substantially similar adjustment, namely a pivoting movement.
• a first pivot axis 22 is provided, which is formed in this exemplary embodiment by a substantially horizontally extending, pivotally mounted on the armrests 6, 8 pivot shaft.
• the first drive unit 18 has an electric motor 24, the output shaft 26 is formed as a worm ei Nes worm gear and is in engagement with a rotatably mounted worm wheel 28 which is rotatably connected to a threaded spindle 30 which is rotatably mounted on the seat part 10 and about the worm wheel 28 and the worm 26 are in rotary drive connection with the electric motor 24.
• the output member of the first drive unit is formed by a spindle nut 32, which is arranged against rotation and movable in the axial direction on the threaded spindle 30.
• an actuating element in the form of a short rod 34 is provided. tied, whose other end is hinged and connected to the first pivot axis 22 formed by the pivot shaft eccentrically with an articulation lever 36 which is rotatably connected to the pivot shaft 22.
• the first drive unit 18 in the axial direction of the pivot shaft 22 to the rod 34 and the lever 36, a further articulation lever 36 'and a further rod 34th ' on .
• the rods 34, 34 ' form a fork-like arrangement, between which the free end of the threaded spindle 30 is received.
• the second drive unit 20 has an electric motor 38, the output shaft 40 is formed as a worm and with a rotatably mounted Schnek- kenrad 42 is engaged, which is rotatably connected to a rotatably mounted on the calf part 12 threaded spindle 44.
• the electric motor 38 is fastened to an inner frame 46 of the calf part 12.
• the output member of the second drive unit 20 is formed by a spindle nut 48, which is arranged against rotation and movable in the axial direction on the threaded spindle 44.
• the calf part 12 is relative to a second one
• Pivot axis 50 pivotally mounted on the same
• the second pivot axis 50 is connected via two axially spaced apart in the axial direction of the second pivot axis 50 engaging elements in the form of substantially arcuate - tabs 52, 54 with the first pivot axis 22 forming pivot shaft.
• one end of the lug 52 is non-rotatably connected to the pivot shaft forming the first pivot axis 22, while its other end is non-rotatably connected to the second pivot axis 50. is bound.
• the connection of the tab 54 with the pivot shaft 22 and the second pivot axis 50 is formed in this corresponding manner.
• the second drive unit 20 has a second actuator in the form of a rod 56, one end of which is pivotally connected to the spindle nut 58 and the other end is pivotally connected to the first pivot axis 22 and the second pivot axis 50 eccentrically with the tab 54.
• Fig. 4 illustrates the connection of the Spindelmut ter 48 with the tab 54 on the rod 56th
• a first kinematic phase illustrated in FIGS. 5 to 8 the calf part 12 is pivoted about the first pivot axis 22 relative to the seat part 10 by means of the first drive unit 18, while the calf part 12 is rotated by the second drive unit 20 in the second kinematic phase Swivel axis 50 is pivoted relative to the seat part 10.
• Swivel axis 50 is pivoted relative to the seat part 10.
• the first pivot axis 22 and the second pivot axis 50 are substantially parallel to one another.
• Fig. 5 shows a first end position of the Verstellbewe movement in which the seat part 10 and the calf part 12 span a substantially horizontal support plane.
• the electric motor 24 drives the threaded spindle 30 in such a way that the spindle nut 32 in FIG. 5 moves to the left.
• the spindle nut 32 presses on the lever 34 against the lever 36, so that this in FIG. 5 about the first pivot axis 22 counterclockwise swung sense.
• the calf part 12 pivots about the first pivot axis 22 relative to the seat part 10. Since the second drive unit 20 is stopped in the first kinematic phase, the kinematics in this phase are determined exclusively by the first drive unit 18.
• the calf part 12 As shown in FIG. 7 can be seen, pivoted in a further movement of the spindle nut 32 in FIG. 7 to the left, the calf part 12 further counterclockwise about the first pivot axis 22. In order to avoid colli sion of the free end of the calf part 12 with the bottom 56, the calf part 12 is formed in this longitudinal direction compressible in this embodiment, wherein a compression or. Entstauchung done with means of an electric motor drive unit, which j edoch but not interested and therefore not further explained.
• FIG. 8 shows the end of the first kinematic phase at which the calf part 12 is opposite to the one shown in FIG. 5 is pivoted counterclockwise about 90 °, as can be seen from a comparison of FIGS. 5 and 8.
• Fig. 8 is also the starting position at the beginning "of the second kinematic phase.
• the electric motor 38 drives the threaded spindle 44 in such a way that the spindle nut 48 moves in Fig. 8 down.
• the calf part 12 is pivoted relative to the Sit zteil 10 further counterclockwise, and that now about the second pivot axis 50, as shown in FIG. 9 can be seen.
• Adjusting position drives the electric motor 38, the threaded spindle 44 further such that the spindle nut 48 m Fig. 9 screws to the right, so that the calf part 12 is pivoted further counterclockwise until it the in Fig. 10 has reached shown second end position of the adjusting movement.
• the first drive unit 18 is set so that the kinematics are determined exclusively by the second drive unit 20.
• the calf part 12 during the first kinematic phase by a first pivot angle of about 90 ° and during the second kinematic phase by a second pivot angle of about 90 ° relative to the seat part 10th pivoted, so that a resul tierender third pivot angle is about 180 °
• the first kinemati cal phase and the second kinematic phase zeitl I follow one another. According to the invention, however, it is also possible that the first kinematic phase and the second kinematic phase occur at least partially overlapping at the same time or in the course of time.

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• 2005
  • 2005-01-14 DE DE102005001877A patent/DE102005001877A1/de not_active Withdrawn
  • 2005-12-03 DE DE502005006775T patent/DE502005006775D1/de active Active
  • 2005-12-03 CN CNA2005800465900A patent/CN101128139A/zh active Pending
  • 2005-12-03 WO PCT/EP2005/012956 patent/WO2006074763A1/fr active Application Filing
  • 2005-12-03 EP EP05823428A patent/EP1850699B1/fr not_active Not-in-force
  • 2005-12-03 AT AT05823428T patent/ATE424128T1/de not_active IP Right Cessation
• 2007
  • 2007-07-16 US US11/826,540 patent/US20080018157A1/en not_active Abandoned

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