EP4142545A1 - Dispositif de support réglable au moyen d'un moteur électrique - Google Patents

Dispositif de support réglable au moyen d'un moteur électrique

Info

Publication number
EP4142545A1
EP4142545A1 EP21755440.1A EP21755440A EP4142545A1 EP 4142545 A1 EP4142545 A1 EP 4142545A1 EP 21755440 A EP21755440 A EP 21755440A EP 4142545 A1 EP4142545 A1 EP 4142545A1
Authority
EP
European Patent Office
Prior art keywords
lever
support part
pivot axis
support
base part
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
EP21755440.1A
Other languages
German (de)
English (en)
Inventor
Eckhart Dewert
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.)
De Werth Group AG
Original Assignee
De Werth Group AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by De Werth Group AG filed Critical De Werth Group AG
Publication of EP4142545A1 publication Critical patent/EP4142545A1/fr
Pending 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
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the invention relates to an electric motor-adjustable support device of the type mentioned in the preamble of claim 1 for supporting an upholstery of a piece of seating and/or lying furniture, in particular a mattress of a bed.
  • So-called double drives are known for adjusting slatted frames, for example, which have a housing designed as a separate component that can be connected to the slatted frame and in which two adjusting units are accommodated, one of which is used, for example, to adjust a back support part and the other to adjust a leg support of the slatted frame serves .
  • the adjustment units are designed as spindle drives, with the drive being coupled to a support part to be adjusted via a linkage lever which is non-rotatably connected to a pivot shaft assigned to the support part to be adjusted.
  • the spindle nut of the spindle drive presses against the linkage lever so that the swivel shaft and thus the support part are pans .
  • Such double drives are known, for example, from EP 0 372 032 A1 and DE 38 42 078 A1.
  • each adjustment unit has an electric motor-driven winding device for a rope, belt or chain-like traction device, which is connected in the manner of a pulley block to a pivoted lever which is non-rotatably connected to a Pivot shaft is connected, which in turn is operatively connected to a support part to be adjusted.
  • Double drives working according to different operating principles are also known from DE 298 11 566 U1 and DE 297 14746 U1.
  • An adjustable slatted frame is known from DE 39 00 384 A1, in which the adjustment of a head or leg support part of the slatted frame takes place by means of a pneumatic cylinder.
  • DE 31 03 922 A1 discloses a slatted frame in which the adjustment of a part of the upper body support, for example, takes place via a windshield wiper motor and lifting scissors.
  • a double drive is known from EP 1 294 255 B1, in which the transmission of power from a linearly movable drive element to a pivoted lever, which is operatively connected to a pivot shaft that is operatively connected to a support part to be adjusted, takes place via a pulley block.
  • Similar furniture drives are also available through FR 2 727 296 A, DE 34 09 223 C2, DE 198 43 259 Cl, GB 2 334 435 A and US 5 528 948 A.
  • slatted frames are known in which the adjustment device for adjusting a support part is partially or completely integrated into a base body of the slatted frame.
  • DE 199 62 541 C2 shows and describes a motor-adjustable support device which has a first support part which has parallel longitudinal beams and which, in the support device known from the publication, is formed by a stationary central support part.
  • the known support device also has further support parts which can be adjusted relative to the first support part by drive means.
  • a first longitudinal beam of the first support part is designed as a hollow profile to accommodate the drive means, with the entire drive including a drive motor being accommodated in the hollow longitudinal beam.
  • WO 96/29970 discloses a motor-driven adjustable support device for a mattress of a bed, which has several support parts that follow one another in the longitudinal direction of the support device and can be pivoted relative to a first support part by drive means.
  • the support parts are mounted on an outer frame whose profile height is significantly greater than the profile height of the support parts.
  • parts of the outer frame are designed as a hollow profile, with parts of the drive means for adjusting the support parts relative to one another being accommodated in the hollow profile are .
  • the drive motor is arranged on an inside of a part of the outer frame.
  • EP 0 788 325 B1 discloses a motor-driven adjustable support device for a mattress of a bed, which has a first support part having a longitudinal beam and at least one second support part which can be pivoted relative to the first support part by drive means.
  • the drive motor is arranged outside the base area of the support device and is fastened to a frame-like extension of the first support part.
  • EP 1 633 219 B1 discloses a slatted frame in which parts of the adjusting device are accommodated in a hollow longitudinal beam, while the drive motor is arranged outside of the longitudinal beam and is in drive connection through a recess with the parts of the adjusting device accommodated in the longitudinal beam.
  • WO 2008/113401 discloses a furniture drive provided for adjusting a drawer relative to a body of a cupboard, in which the drawer is adjusted via a flexible toothed rack which meshes with a gear wheel.
  • An electromotive furniture drive with the features of the preamble of claim 1 is known from EP 2 792 277 B2.
  • the furniture drive known from the publication has a housing in which a linearly movable output element is arranged, which is drive-connected to an electric motor and which, in the operating state of the furniture drive, is operatively connected to the traction cable of the Bowden cable in order to exert a tensile force on the traction cable , wherein the housing has a first attachment point for fixing the sheathing of the Bowden cable.
  • the furniture drive known from the publication is based on the idea of power transmission from an electromotive Technical drive unit, which is used, for example, to adjust the support parts of a slatted frame relative to one another, to effect the support part to be adjusted via a Bowden cable with a traction cable and a sheath.
  • the furniture drive known from Druckschri ft thus breaks away from the concepts of power transmission previously known, for example, from slatted frames, and represents what is known from other technical areas, for example brakes and gear shifts on bicycles, gas and clutch trains on motorcycles and from automotive technology Principle of a Bowden cable for furniture drives.
  • This construction results in significant technical advantages in that the freedom in terms of the arrangement of the furniture drive relative to the support parts to be adjusted is significantly increased, a corresponding furniture drive can be implemented in a compact manner and with a low overall height and is also simple in construction and robust.
  • EP 3 009 052 A1 discloses a supporting device which can be adjusted by an electric motor and has the features of the preamble of claim 1 .
  • the support device known from the publication has a base part, a support part which is connected to the base part so that it can pivot about a support part pivot axis, and an electromotive drive device which is operatively connected to the base part and the support part for pivoting the support part relative to the base part, with the The base part and the support part are designed in such a way and are operatively connected to the drive device in such a way that the support part can be adjusted between an undisturbed starting position, in which the support part lies flat on the base part, and an end position of the adjustment movement, in which the support part is at an angle to the base part is arranged.
  • the invention is based on the object, an electric motor adjustable support device in the preamble ff of Specify claim 1 mentioned type, which is compared to the known support device further improved.
  • the drive device has at least one drive train, through which the drive device is in drive connection with an adjustment element that can be moved translationally along a linear axis, such that the adjustment element can be moved by means of the drive device between an initial position that corresponds to the non-adjusted initial position of the support part, and an end position, which corresponds to the end position of the adjustment movement, and that at least one of the parts is arranged at least one lifting guide element that acts like a wedge, which is shaped in such a way and is or can be brought into operative connection with the adjustment element that when there is a relative movement between the adjustment element and the lifting guide element pivots the support part relative to the base part about the pivot axis along the linear axis.
  • the invention provides a supporting device that can be adjusted by an electric motor, which has a simple and robust design and is suitable for applying large adjusting forces.
  • FIG. 2 shows a perspective view of a second exemplary embodiment of a support device according to the invention
  • FIGS. 1.1 to 1.9 A first exemplary embodiment of a support device according to the invention is explained in more detail below with reference to FIGS. 1.1 to 1.9.
  • 1.1 to 1.9 show a first exemplary embodiment of an electric motor-adjustable support device 2 according to the invention for supporting an upholstery of a piece of seating and/or lying furniture, in particular a mattress of a bed.
  • the upholstery is not shown in the drawing.
  • the manner in which a corresponding upholstery is supported by means of a support device is generally known in the art and is therefore not explained in more detail here.
  • FIG. 1.1 shows the support device 2 in an unadjusted starting position of the adjustment movement
  • FIG. 1.2 shows the support device 2 in an end position of the adjustment movement.
  • the support device 2 has a base part 4 and a support part 6 which is connected to the base part 4 so that it can pivot about a support part pivot axis 8 (cf. FIG. 1.4).
  • the support device 2 is particularly suitable for retrofitting a support device that is not adjustable by an electric motor ex works, for example a slatted frame of a bed, with the functionality of an electric motor adjustment.
  • the support device 2 according to the invention is also particularly suitable for temporarily equipping or permanently retrofitting a care or hotel bed in order to give it the functionality of an electric motor adjustment.
  • the basic structure and possible uses of a corresponding support device are known from EP 3 009 052 A2, to which reference is made at this point and the content of which is here is incorporated herein by reference in its entirety.
  • the support device 2 also has an electromotive drive device 10 which is operatively connected to the base part 4 and the support part 6 for pivoting the support part 6 relative to the base part 4 .
  • the base part 4 and the support part 6 are designed in such a way and are operatively connected to the drive device 10 in such a way that the support part 6 moves between an undisturbed starting position (cf. Fig. 1.1), in which the support part 6 lies flat on the base part 4, and a End position of the adjustment movement is adjustable, in which the support part is arranged at an angle to the base part 4 (see. Fig. 1.2).
  • the support part 6 carries spring elements on its upper side, on which padding, for example a mattress of a bed, is supported when the support device 2 is used.
  • the spring elements are formed by spring elements made of plastic, of which only one spring element is provided with the reference numeral 12 as an example in FIGS. 1.1 and 1.2.
  • FIG. 1.3 which corresponds to FIG. 1.1 and shows the support device 2 in the undisturbed starting position
  • FIG. 1.4 which corresponds to FIG. 1.2 and shows the support device 2 in the end position shows the adjustment movement
  • the spring elements 12 are omitted.
  • the support part 6 has longitudinal bars 14, 16, while the base part 4 has longitudinal bars 18, 20 which are connected to one another via a transverse bar 22.
  • the drive device 10 has at least one drive train, through which the drive device 10 is in drive connection with a linear along a Axis translationally movable adjustment element is such that the adjustment element is movable by means of the drive device between an initial position which corresponds to the non-adjusted initial position of the support part and an end position which corresponds to the end position of the adjustment movement.
  • there are two drive trains namely a drive train 24 assigned to the longitudinal bars 14 , 18 and a drive train 26 assigned to the longitudinal bars 16 , 20 . Only the drive train 26 is explained in more detail below.
  • the drive train 24 is constructed accordingly.
  • the drive train 26 has an output element 28 that can be moved translationally along a linear axis, which in this exemplary embodiment is formed by a slide that is guided in a linear guide 30 that is defined by the longitudinal beam 20 that is formed by a U-profile .
  • the slide In the U-profile, the slide can be moved in a translatory manner in the longitudinal direction of the longitudinal beam 20 along a linear axis which runs in the longitudinal direction of the longitudinal beam 20 .
  • the electromotive drive device 10 is formed by a furniture drive using a Bowden cable with a cable and a sheath.
  • a corresponding furniture drive is known from EP 2 792 277 B2, the content of which is hereby fully incorporated by reference into the present application.
  • the Bowden cable in FIG. 1 . 1 to Fig. 1 . 9 not shown.
  • the output element 28 is connected to a movable part of the Bowden cable, so that it moves translationally along the linear axis when the furniture drive is actuated.
  • the moving part of the Bowden cable can be the traction cable of the Bowden cable, while the casing is fixed in place.
  • the movable part of the Bowden cable can also be the casing, while the traction cable is arranged in a fixed location, as is known from EP 3 157 389 A1.
  • an adjustment element 32 is provided, which in this exemplary embodiment is integrally formed on the output member 28.
  • the adjustment element 32 can also be designed as a separate component connected to the drive element in a non-displaceable manner, or it can be functionally connected to the driven element 28 in some other suitable manner.
  • At least one lifting guide element 34 with a wedge-like effect is arranged on one of the parts (base part 4 , support part 6 ), which is shaped in such a way and is operatively connected to the adjustment element 32 or can be brought together such that during a relative movement between the adjustment element 32 and the lifting guide element 34 the linear axis, the support part 6 is pivoted relative to the base part 4 about the support part pivot axis 8 .
  • the lifting guide element 34 which acts like a wedge, is arranged on the support part, specifically in the area of the support part pivot axis 8 (cf. in particular Figs. 1. 5).
  • the adjustment element 32 is thus arranged on the base part 4 in the exemplary embodiment shown.
  • the adjustment element 32 is designed like a nose and protrudes beyond the base part 4 in the direction of the support part 6, as can be seen in particular from FIG. 1 . 9 in relation to the adjustment element 32 ′ of the drive train 24 .
  • the adjustment element 32 In the starting position of the adjustment movement, the adjustment element 32 is accommodated in a recess formed on the support part 6, the inner wall of which forms a contact surface for the adjustment element 32, the cross section of which narrows in the direction of the support part pivot axis 8 in such a way that the support part 6 in a translatory Movement of the adjustment element 32 in the direction of the support part pivot axis 8 can be pivoted about the support part pivot axis 8 or is pivoted.
  • the lifting guide element 34 is formed by a molded part which is connected to the longitudinal beam 20 of the support part 6 and whose side facing the base part 4 forms the recess and contact surface for the adjustment element 32, as can be seen in particular from FIG. 1 . 8 can be seen.
  • the adjustment element In order to adjust the support part 6 relative to the base part 4 , the adjustment element is moved translationally relative to the lifting guide element 34 while it is in contact with the lifting guide element 34 , the lifting guide element 34 being designed or configured in such a way. is shaped and is operatively connected to the adjusting element 32 in such a way that during a translational relative movement between the adjusting element 32 and the lifting guide element 34 the support part 6 is pivoted relative to the base part 4 about the support part pivot axis 8 .
  • the furniture drive (electric motor drive device 10) is actuated in such a way that the adjustment element 32 moves along the linear guide 30 translated to the right in the drawing.
  • adjustment element 32 rests against the underside of lift guide element 34, so that due to the shape of lift guide element 34, support part 6 is pivoted relative to base part 4 about support part pivot axis 8 until the end position shown in Fig. 1.2 and Fig. 1.4 of the Adjustment movement is reached, in which the support part 6 is arranged at an angle relative to the base part 4 and is adjusted to the maximum.
  • FIG. 1.5 shows the support device 2 in the same representation as FIG. 1.4 and illustrates the interaction of the adjustment element 32 with the lifting guide element 34.
  • Fig. 1.6 shows a detail from Fig. 1.5 in the area of the adjustment element 32 and the lifting guide element 34 on an enlarged scale compared to Fig. 1.5.
  • 1.7 shows the lifting guide element 34 interacting with the adjustment element 32, with the remaining components of the support part 6 being omitted.
  • the support part 6 is returned to the starting position relative to the base part 4 when the drive device is switched on, but under the weight of the upholstery resting on the support part 6 and possibly under the additional weight of a person resting on the upholstery.
  • the support device 2 is simple and robust in construction and suitable for applying large adjustment forces, which are required, for example, when the support part 6 is adjusted under the load of a person resting on the padding supported by the support device 2 .
  • the actuation of the Bowden cables assigned to the drive trains 24, 26 can in principle be effected by separate furniture drives which are synchronized in terms of control technology.
  • the actuation is preferably carried out by a common furniture drive which actuates both Bowden cables synchronously, as is known, for example, from EP 2 792 277 B1. In this way, the use of the support part 6 during the adjustment is reliably avoided.
  • the drive is provided via 2 drive trains assigned to the longitudinal beams 14, 18 and 16, 20, respectively. While retaining the basic principle according to the invention, a single drive train can also be used, which is arranged in the longitudinal center plane of the support part 6 or base part 4 .
  • a wedge-like effect is understood to mean that the relevant component performs the function of a wedge or an inclined plane, regardless of its shape and design.
  • FIG. 2 shows a second exemplary embodiment of a support device 2 according to the invention. While in the embodiment according to FIG. 1.1 to FIG. 1.9 the casing of the Bowden cable forms the moving part that is moved by the furniture drive, in the embodiment according to FIG. 2 the traction cable of the Bowden cable is the moving part. As can be seen from FIG. 2, the Bowden cable provided with the reference number 36 in FIG.
  • FIG. 3 shows a third exemplary embodiment of a support device 2 according to the invention, which differs from the exemplary embodiment according to FIG in Fig. 3 by way of example a spring wood with the reference number
  • 4.1 to 4.5 show a fourth exemplary embodiment of a support device according to the invention, which initially differs from the previous exemplary embodiments in that instead of two drive trains that are spaced apart from one another transversely to the longitudinal direction of the support device 2, a single drive train 26 is provided, which is connected between a single longitudinal beam 20 of the base part 4 and a single longitudinal beam 16 of the support part 6 is effective.
  • the exemplary embodiment according to FIGS. 4.1 to 4.5 differs from the previous exemplary embodiments in that a lever arrangement 40 is arranged in the drive train between the base part 4 and the support part 6 .
  • a lever arrangement 40 is arranged in the drive train between the base part 4 and the support part 6 .
  • the lever arrangement 40 has an opening lever arrangement 42 which functions as an adjustment element within the meaning of the invention and has at least one opening lever.
  • FIGS. 4.1 to 4.3 show the support device 2 in the end position of the adjustment movement, with various components being omitted in FIGS. 4.2 and 4.3 for reasons of illustration.
  • FIGS. 4.4 and 4.5 show the support device in the non-displaced starting position of the adjustment movement, with various components also being omitted in FIGS. 4.4 and 4.5 for reasons of clarity.
  • setting-up lever arrangement 42 (cf. in particular FIG. 4.5) has a first setting lever 44 whose one end is articulated and connected to the output member 28 about a first articulation axis 46 and whose other end is articulated and connected about a second articulation axis 48 to one end of a second open adjusting lever 50 whose free end is operatively connected to a wedge-like lifting guide element 52 .
  • the operative connection between the second open control lever 50 and the lifting guide element 52 is designed in such a way that, starting from the non-adjusted starting position of the adjustment movement (cf. Fig. 4 . 4 ), in a first kinematic phase the open control levers 44 , 50 perform a translational movement lead, wherein the open control levers 44 , 50 are guided in the linear guide 30 and the free end of the second open control lever 50 interacts with the lifting guide element 52 for pivoting the support part 6 relative to the base part 4 , and that in a second kinematic phase the free end of the second open adjusting lever 50 runs against a stop, so that the open adjusting levers 44, 50 pivot relative to one another about the second joint axis 48, with the support part 6 pivoting further about the support part pivot axis 8 relative to the base part 4 until the end position of the adjustment movement is reached is .
  • the lifting guide element 52 has a cross section that widens at least in sections along the linear axis of the adjustment element.
  • the lifting guide element 52 is shaped in such a way that its cross section expands along the linear axis in such a way that the adjustment element in the area of the starting position of the adjustment movement bears against a section of smaller or minimal cross-section of the lifting guide element 52 and in the area of the end position of the adjustment movement at a section of larger or maximum cross-section of the lifting guide element 52 is located.
  • the lifting guide element 52 is wedge-shaped in the exemplary embodiment shown, with its cross section extending in the direction of the support part pivot axis 8, i.e. in the direction in which the positioning lever arrangement 42, which acts as an adjustment element, moves when it is adjusted from the starting position to the end position moved towards expanded .
  • the lifting guide element 52 can also be shaped in such a way that its cross section widens at least in sections in the form of an arc or a ramp. Any combination of curved and straight cross-sectional sections is also possible.
  • the kinematics of the adjustment movement are defined by the cross-sectional shape of the lifting guide element 52 . This also applies to the other exemplary embodiments of the invention explained above and explained in more detail below.
  • the setting-up lever arrangement 42 acting as an adjustment element is in accordance with the exemplary embodiment from FIG. 1 . 1 to Fig. 1 . 9 guided in a linear guide 30 formed by the U-profile of the longitudinal beam 18 .
  • the starting position of the adjustment movement shown in FIG. 4 is the furniture drive (electromotive drive device) associated with the adjustment element is actuated in such a way that the raising lever arrangement 42 in the linear guide 30 moves to the right in the drawing.
  • the free end of the second positioning lever 2 runs under the lift guide element 52 so that the lift guide element is pivoted clockwise about the support part pivot axis 8 in the drawing.
  • the support part 6 is pivoted in the desired manner relative to the base part 4 . Because at the beginning of the adjustment movement, free end of the second positioning lever 50 underruns the lifting guide element 52, the dead center during the adjustment of the support part 6 is overcome.
  • the free end of the second opening lever 50 runs against the end of the linear guide 30 that acts as a stop, so that the opening levers 44, 50 pivot relative to one another about the second joint axis 2, whereby the support part 6 moves further around the support part pivot axis 8 is pivoted until the in Fig.
  • a roller arrangement 54 can be provided at the free end of the second setting lever 50 in order to reduce the friction of the setting lever arrangement 42 in the linear guide 30.
  • Fig. 5.1 and Fig. 5.2 a modification of the previous embodiment is shown, which differs from the same in that the open levers 44, 50 have a greater length. In this way, the pivoting stroke during the pivoting adjustment of the support part 6 relative to the base part 4 is increased and the load on the electromotive drive device is reduced.
  • Fig. 5.1 shows the support device 2 in the end position of the adjustment movement, while Fig.
  • 6.1 to 6.5 show a further modification of the exemplary embodiment according to FIGS.
  • the electromotive drive device 10 has a
  • Electric motor 56 which rotates via a worm gear is drivingly connected to a rotatably mounted threaded spindle, on which a spindle nut 58 is arranged, secured against rotation and movable in the axial direction.
  • Corresponding spindle drives are well known to those skilled in the field of furniture drives and are therefore not explained in more detail here.
  • the spindle nut 58 is connected to the raising lever arrangement 42 by means of tabs 60, 62 which extend in the longitudinal direction of the linear guide 30 and which can be formed, for example, by sheet metal strips and between which the threaded spindle is accommodated.
  • the electric motor 56 drives the threaded spindle in such a way that the spindle nut 58 moves to the right in the drawing.
  • the pivotal adjustment of the support part 6 relative to the base part 4 takes place in two successive kinematic phases, as has been explained for the exemplary embodiment according to FIGS. 4.1 to 4.5.
  • the drive train 26 has a high degree of rigidity.
  • a Bowden cable drive can be exchanged for a drive with a spindle drive.
  • FIGS. 7.1 to 7.4 A further exemplary embodiment of a support device 2 according to the invention using a lever arrangement is shown in FIGS. 7.1 to 7.4.
  • the lever arrangement has a single lever 66 mounted on the base part 4 so that it can pivot about a stationary lever pivot axis 64, the free end of which carries a roller 68 (cf. FIG. 7.3) on which the underside of the support part 6 rests loosely.
  • a lift guide On the underside of lever 66 is a lift guide
  • roller carriage 68 which interacts with an adjusting element for adjusting the support part 6 relative to the base part 4, which in this exemplary embodiment is designed as a roller carriage 68 (cf. FIG. 7.4).
  • the roller carriage 68 On its side facing the linear guide 30 , the roller carriage 68 has rollers 70 , 72 , on which it runs in the linear guide 30 .
  • the roller carriage 68 On its side facing the lifting guide element 52, the roller carriage 68 has a further roller 74, with which the roller carriage 68 comes into contact with the lifting guide element 52 during the adjustment movement.
  • the lifting guide element 52 has an elongated, wedge-like contact surface that widens in cross-section toward the lever pivot axis 64 .
  • the roller carriage 68 is in a tensile connection with a movable part of a Bowden cable of a Bowden cable drive.
  • FIG. 7.1 shows the support device 2 in the end position of the adjustment movement
  • FIGS. 7.2 to 7.4 show the support device in the starting position.
  • the Bowden cable drive is actuated in such a way that the roller carriage 68 in the linear guide 30 is pulled to the left in the drawing.
  • the roller carriage 68 travels under the lifting guide element 52, so that the lever 66 is pivoted counterclockwise in FIG. 7.1.
  • the support part 6 lying loosely on the free end of the lever 66 is pivoted clockwise until the end position of the adjustment movement shown in FIG. 7.1 is reached.
  • a modification of the previous embodiment is shown, which differs from the same in that instead of a Bowden cable drive a spindle drive 57 is provided with a spindle nut 58 which is arranged on a threaded spindle 76.
  • FIGS. 8.2 to 8.5 show the support device 2 in the starting position of the adjustment movement.
  • Various components of the support device 2 have been omitted in FIGS. 8.2 to 8.4 for reasons of clarity.
  • 8.5 shows the lifting guide element 52 used in the exemplary embodiment taken by itself.
  • lever 66 has two parallel lever parts 78, 80 which are spaced apart from one another in the radial direction of the threaded spindle 76 and between which the threaded spindle 76 is guided during the adjustment movement.
  • 9.1 to 9.8 show a further exemplary embodiment of a support device 2 according to the invention, in which a lever arrangement 40 having a lever mechanism 82 is arranged in the drive train between the base part 4 and the support part 6 .
  • the lever mechanism 82 has a first lever 84 which is mounted on the base part 4 such that it can pivot about a stationary lever pivot axis 86 which is parallel to the support part pivot axis 8 . With the end of the first lever 84 facing away from the lever pivot axis 86 , one end of a second lever 92 is articulated and connected about a first lever pivot axis 88 parallel to the lever pivot axis 86 at a first connection point 90 .
  • the other end of the second lever 92 is articulated and pivotable about a second lever pivot axis 94 parallel to the first lever pivot axis 88 at a second connection point 96 to one end of a third lever 98, the other end of which pivots and is guided in a slot guide 100 in the axial direction of the linear axis is movably guided.
  • the end of the third lever 98 connected to the second lever 92 is at the second connection point 96 in the longitudinal direction of the support part 6 slidably guided on the same and connected in an articulated manner to the same.
  • the levers 84, 92, 98 are designed in this way and are connected to the base part 4 or connected to the support part 6 and the drive device and in operative connection, that
  • the first lever 84 is pivoted about the stationary lever pivot axis 86, with the support part 6 resting on the second lever 92 being pivoted about the support part pivot axis 8, with the second lever 92 moving in the longitudinal direction of the support part
  • the first lever 84 is pivoted further about the stationary lever pivot axis 86, with the third lever 98 being pivoted about the end of the slot guide 100 facing away from the support part pivot axis 8, with the support part 6 moving from the first connection point 90 between the first Lever 84 and the second lever 92 lifts and the second connection point 96 between the second lever 92 and the third lever 98 moves towards the end of the support part facing away from the first pivot axis until the end position of the adjustment movement is reached.
  • the lifting guide element 52 is attached to the side of the first lever 84 facing the linear guide 30 and interacts with the roller carriage 68 guided in the linear guide 30 .
  • the pivoting of the first lever 84 about the lever pivot axis 86 accordingly takes place in a manner corresponding to the exemplary embodiment according to FIGS. 8.1 to 8.5.
  • 9.6 to 9.8 are schematic representations and show a kinematic model of the exemplary embodiment to illustrate the kinematic phases.
  • the first lever 84 is pivoted counterclockwise about the lever pivot axis 86 .
  • the end of the third lever 98 facing away from the support part 6 moves in the slot guide 100 in the direction of the lever pivot axis 86, with the support part 6 resting on the connection points 90, 96 on the third lever 98 and the third lever 98 moving relative to the support part 6 shifts in the direction of its free end.
  • the third lever 98 comes to rest on the end of the slot guide 100 facing the lever pivot axis 6, so that a further translational movement in the direction of the lever pivot axis 86 is prevented and the third lever 98 is also pivoted counterclockwise.
  • the support part 6 lifts off the second lever 92 at the first connection point 90, with the second connection point 96 shifting in the direction of the free end of the support part 6, as shown in FIG. 9.7.
  • Fig. 9.8 shows the end position of the adjustment movement.
  • levers 84 and the third lever 98 have a relatively large length, while the second lever 92 is designed as a relatively short connecting lever.
  • the lengths of levers 84, 92 and 98 are dimensioned such that the length of first lever 84 plus the length of second lever 92 equals the length of the third lever plus the distance between lever pivot axis 86 and the end of slotted guide 100 remote from lever pivot axis 86 along the corresponds to the linear axis.
  • the third lever 98 consists of two parallel lever parts which are spaced apart from one another in the axial direction of the lever pivot axis 86 and between which, in the starting position of the adjustment movement, the second lever 92 and the lever 92 facing the second lever 92 End of the first lever 84 are received, as can be seen from Fig. 9.1.
  • FIGS. 10.1 to 10.7 A further exemplary embodiment of a support device according to the invention using a lever mechanism 102 is shown in FIGS. 10.1 to 10.7.
  • FIGS. 10.2 and 10.3 show the support device 2 in the starting position of the adjustment movement.
  • 10.4 to 10.7 are schematic views to clarify the kinematic phases of the adjustment movement in this embodiment.
  • the support device 2 has a base part 4 and a support part 6 which is connected to the base part 4 so that it can pivot about a support part pivot axis 8 .
  • an electric motor drive device (furniture drive) is provided, which in drive Connection with an adjusting element that is translationally movable along a linear axis.
  • the lever mechanism 102 has a one-armed first lever 104 which is mounted on the base part 4 so that it can swivel about a stationary lever swivel axis 106 parallel to the support part swivel axis 8 .
  • the lever mechanism 102 also has a two-armed second lever 108 , the free end of the first lever 104 facing away from the lever pivot axis 106 being articulated about a first lever joint axis 110 to the second lever 108 remote from its ends.
  • One end of the second lever 108 is guided in a linear guide 112 so as to be translationally movable relative to the lever pivot axis 106 , while the other end of the second lever 108 is articulated and is connected to the support part 6 so that it can be displaced in the longitudinal direction thereof.
  • the adjustment element is formed by a carriage 114 which is drive-connected to the electromotive drive device and can be moved in the linear guide 112 under the effect of the same.
  • the functional connection between the lever mechanism 102, the electromotive drive device and the base part 4 and the support part 6 is designed in such a way that
  • the end of the second lever 108 guided in the linear guide 112 is displaced in a first kinematic phase in the direction of the lever pivot axis 106, with the other end of the second lever 108 being in the region of the end facing away from the support part pivot axis 8 of the support part 6 is located, whereby the support part 6 is pivoted about the support part pivot axis 8, and -
  • the end of the second lever 108 facing the lever pivot axis 106 moves further in the direction of the lever pivot axis 106, while the end of the second lever 108 facing away from the lever pivot axis 106 moves relative to the support part 6 in the direction of the support part pivot axis, whereby the support part 6 is further pivoted relative to the base part 4 about the support part pivot axis 8 until the end position of the adjustment movement is reached.
  • Fig. 10 . 3 to fig. 10 . 6 are schematic representations and show a kinematic model of the exemplary embodiment to illustrate the kinematic phases.
  • the support part 6 lies flat on the base part 4 , with the levers 104 , 108 lying flat in the linear guide 112 .
  • the end of the second lever 108 facing the support part 6 is arranged at a distance from the free end of the support part 6 .
  • the carriage 114 is driven by the electromotive drive device in such a way that it moves to the left in the drawing and in doing so presses against the end of the second lever guided in the linear guide 112, so that this end is in the linear guide 112 in the drawing is pressed to the left, whereby the first lever 104 is pivoted counterclockwise in the drawing about the lever pivot axis 106 and the second lever 108 is pivoted about the lever joint axis 110 relative to the first lever 104 clockwise.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

L'invention concerne un dispositif de support (2) qui est réglable au moyen d'un moteur électrique pour supporter le rembourrage d'un meuble d'assise et/ou inclinable, en particulier un matelas d'un lit, qui comprend une partie de base (4) et une partie de support (6). Au moins une des parties (4, 6) comporte au moins un élément de guidage de levage (34) qui est situé dessus et qui agit à la manière d'un coin, et dont la forme est telle qu'elle lui permet une liaison fonctionnelle avec l'élément de réglage (32) de sorte que, en cas de mouvement relatif entre l'élément de réglage (32) et l'élément de guidage de levage (34) le long de l'axe linéaire, la partie de support (6) pivote par rapport à la partie de base (4) autour de l'axe de pivotement de la partie de support (8).
EP21755440.1A 2020-08-12 2021-08-03 Dispositif de support réglable au moyen d'un moteur électrique Pending EP4142545A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE202020104670 2020-08-12
DE202020104959 2020-08-27
DE202021101760 2021-04-01
DE102021108345 2021-04-01
PCT/EP2021/071672 WO2022033928A1 (fr) 2020-08-12 2021-08-03 Dispositif de support réglable au moyen d'un moteur électrique

Publications (1)

Publication Number Publication Date
EP4142545A1 true EP4142545A1 (fr) 2023-03-08

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Application Number Title Priority Date Filing Date
EP21755440.1A Pending EP4142545A1 (fr) 2020-08-12 2021-08-03 Dispositif de support réglable au moyen d'un moteur électrique

Country Status (4)

Country Link
EP (1) EP4142545A1 (fr)
CN (1) CN116056610A (fr)
DE (4) DE202021104109U1 (fr)
WO (1) WO2022033928A1 (fr)

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DE102015106994A1 (de) 2015-05-05 2016-11-10 Deon Group AG Elektromotorischer Möbelantrieb

Also Published As

Publication number Publication date
CN116056610A (zh) 2023-05-02
DE202021104109U1 (de) 2021-11-15
DE112021002148A5 (de) 2023-03-16
WO2022033928A1 (fr) 2022-02-17
DE102021119984A1 (de) 2022-02-17
DE102021120007A1 (de) 2022-02-17

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