EP4142545B1 - 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
EP4142545B1
EP4142545B1 EP21755440.1A EP21755440A EP4142545B1 EP 4142545 B1 EP4142545 B1 EP 4142545B1 EP 21755440 A EP21755440 A EP 21755440A EP 4142545 B1 EP4142545 B1 EP 4142545B1
Authority
EP
European Patent Office
Prior art keywords
lever
support part
pivot axis
support
adjustment
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
EP21755440.1A
Other languages
German (de)
English (en)
Other versions
EP4142545A1 (fr
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
Application granted granted Critical
Publication of EP4142545B1 publication Critical patent/EP4142545B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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 electrically adjustable support device for supporting upholstery of a seating and/or reclining furniture, in particular a mattress of a bed.
  • double drives For adjusting, for example, slatted bed bases, so-called double drives are known. These have a housing designed as a separate component that can be connected to the slatted bed base. This housing contains two adjustment units, one of which, for example, is used to adjust a back support section and the other to adjust a leg support section of the slatted bed base.
  • the adjustment units are designed as spindle drives.
  • the drive coupling to the support section to be adjusted is achieved via a pivot lever that is rotationally fixed to a swivel shaft associated with the support section to be adjusted.
  • the spindle nut of the spindle drive presses against the pivot lever, causing the swivel shaft and thus the support section to pivot.
  • Such dual drives are, for example, EP 0 372 032 A1 and DE 38 42 078 A1 known.
  • each adjustment unit has an electrically driven winding device for a rope-, band- or chain-shaped traction element, which is connected in the manner of a pulley system to a pivot lever which is rotationally fixed to a pivot shaft which in turn is operatively connected to a support part to be adjusted.
  • Double drives operating according to different principles are further characterized by DE 298 11 566 U1 and DE 297 14746 U1 known.
  • An adjustable slatted frame is known in which the adjustment of a head or leg support part of the slatted frame is carried out by means of a pneumatic cylinder.
  • a slatted frame is known in which the adjustment of, for example, an upper body support section is carried out via a windshield wiper motor and a lifting scissor mechanism.
  • CH 587 035 A5 Disclosing a frame for beds, loungers, or seating furniture, in which a support device pivotally arranged relative to a base part can be adjusted by means of a threaded drive. Further relevant prior art documents that contribute to understanding the invention are cited below: US2017332798A1 and US2003/052238A1 .
  • slatted bed bases are known in which the adjustment mechanism for adjusting a support element is partially or completely integrated into a base body of the slatted bed base.
  • a motor-adjustable support device comprising a first support element with parallel longitudinal beams, which, in the support device known from the publication, is formed by a stationary central support element.
  • the known support device further comprises additional support elements that are adjustable relative to the first support element by means of drive elements.
  • a first longitudinal beam of the first support element is designed as a hollow profile to accommodate the drive elements, with the entire drive, including a drive motor, being housed within the hollow longitudinal beam.
  • a motor-adjustable support device for a bed mattress comprising several support elements arranged successively along the longitudinal direction of the support device. These support elements are pivotable relative to a first support element by means of a drive mechanism.
  • the support elements are mounted on an outer frame whose profile height is significantly greater than the profile height of the support elements.
  • parts of the outer frame are designed as hollow profiles, with parts of the drive mechanism for adjusting the support elements relative to each other being accommodated within these hollow profiles.
  • the drive motor is located on the inside of a part of the outer frame.
  • a motor-adjustable support device for a bed mattress comprising a first support element with a longitudinal beam and at least one second support element that can be pivoted relative to the first support element by means of a drive mechanism.
  • the drive motor is arranged outside the base of the support device and attached to a frame-like extension of the first support element.
  • the furniture drive known from the printed document has a housing in which a linearly movable output element is arranged, which is in drive connection with an electric motor and which, in the operating state of the furniture drive, is in operative connection with the pull cable of the Bowden cable to exert a tensile force on the pull cable, wherein the housing has a first attachment point for fixing the sheathing of the Bowden cable.
  • the furniture drive known from the printed material is based on the idea of transferring power from an electric motor.
  • the drive unit used, for example, to adjust the support elements of a slatted bed base relative to each other, transmits the force to the support element to be adjusted via a Bowden cable with a pull cord and sheathing.
  • the furniture drive described in the publication thus departs from the power transmission concepts previously known, for example, in slatted bed bases, and applies the Bowden cable principle, familiar from other technical fields such as bicycle brakes and gear shifts, motorcycle throttle and clutch cables, and automotive engineering, to furniture drives.
  • the support device known from the publication comprises a base part, a support part pivotably connected to the base part about a support part pivot axis, and an electromechanical drive unit which is operatively connected to the base part and the support part for pivoting the support part relative to the base part, wherein the base part and the support part are designed and operatively connected to the drive unit such that the support part is adjustable between an unadjusted initial 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 arranged at an angle to the base part.
  • the invention is based on the objective of providing an electrically adjustable support device. to provide a support system that is further improved compared to the known support system.
  • the invention provides an electrically adjustable support device that is simple and robust in design and suitable for applying large adjustment forces.
  • Fig. 1.1 The support device 2 is shown in an unadjusted starting position of the adjustment movement, while Fig. 1.2 The support device 2 is in an end position of the adjustment movement.
  • the support element 6 has spring elements on its upper surface, on which upholstery, for example a mattress of a bed, rests when the support device 2 is in use.
  • the spring elements are formed by spring elements made of plastic, of which in Fig. 1.1 and Fig. 1.2 For example, only one spring element is provided with the reference number 12.
  • the Fig. 1.1 corresponds and shows the support device 2 in the unadjusted starting position
  • Fig. 1.4 the Fig. 1.2 corresponds and shows the support device 2 in the end position of the adjustment movement, the spring elements 12 omitted.
  • the support part has 6 longitudinal beams 14, 16, while the base part has 4 longitudinal beams 18, 20, which are connected to each other via a transverse beam 22.
  • the drive device 10 has at least one drive train by which the drive device 10 is connected to a drive along a linear
  • the axis of the translationally movable adjusting element is such that the adjusting element is movable by means of the drive unit between a starting position, which corresponds to the unadjusted starting position of the support part, and an end position, which corresponds to the end position of the adjustment movement.
  • two drive trains are present, namely a drive train 24 associated with the longitudinal beams 14, 18 and a drive train 26 associated with the longitudinal beams 16, 20. Only drive train 26 will be explained in more detail below.
  • Drive train 24 is constructed accordingly.
  • the drive train 26 has a driven element 28 that is movable translationally along a linear axis.
  • the driven element is formed by a slide guided in a linear guide 30, which is defined by the longitudinal beam 20, which is formed by a U-profile. Within the U-profile, the slide is movable translationally along a linear axis running in the longitudinal direction of the longitudinal beam 20.
  • the electromechanical drive unit 10 is formed by a furniture drive using a Bowden cable with a pull cord and sheathing.
  • a corresponding furniture drive is made of EP 2 792 277 B2 known, the content of which is hereby incorporated in its entirety into the present application by reference.
  • the Bowden cable is shown in Fig. 1.1 until 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 cable itself, while the sheathing is stationary. In kinematic inversion of this... However, the moving part of the Bowden cable can also be the sheathing, while the pull cord itself is fixed in place, as shown in the diagram. EP 3 157 389 A1 known.
  • an adjusting element 32 is provided, which in this embodiment is integrally formed with the output element 28.
  • the adjusting element 32 can also be designed as a separate component, fixed against displacement and connected to the drive element, or be operatively connected to the output element 28 in another suitable manner.
  • At least one wedge-shaped lifting guide element 34 is arranged on one of the parts (base part 4, support part 6), which is shaped in such a way and is in operative connection with the adjusting element 32 or can be brought into such a way that, in the event of a relative movement between the adjusting element 32 and the lifting guide element 34 along the linear axis, the support part 6 is pivoted relative to the base part 4 about the support part pivot axis 8.
  • the wedge-shaped lifting guide element 34 is arranged on the support part in the area of the support part pivot axis 8 (see in particular Fig. 1.5 )
  • the adjusting element 32 is therefore arranged on the base part 4 in the illustrated embodiment.
  • the adjusting element 32 is nose-like and extends excellently over the base part 4 in the direction of the support part 6, as can be seen in particular from Fig. 1.9 as can be seen with regard to the adjusting element 32' of the drive train 24.
  • the lifting guide element 34 is formed by a molded part connected to the longitudinal beam 20 of the support part 6, the side of which facing the base part 4 forms the recess and contact surface for the adjusting element 32, as shown in particular from Fig. 1.8 as is evident.
  • the adjusting element is located in contact with the lifting guide element 34 and is moved translationally relative to the same, wherein the lifting guide element 34 is designed or shaped and is operatively connected to the adjusting element 32 in such a way that, in the event of 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 unit 10) is actuated so that the adjusting element 32 moves along the linear guide 30.
  • the adjustment element 32 is moved translationally to the right in the drawing.
  • the adjusting element 32 rests against the underside of the lifting guide element 34, so that, due to the shape of the lifting guide element 34, the support part 6 is pivoted relative to the base part 4 about the support part pivot axis 8 until the Fig. 1.2 and Fig. 1.4
  • the illustrated end position 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 its maximum extent.
  • Fig. 1.6 shows in opposite Fig. 1.5 enlarged scale, a detail from Fig. 1.5 in the area of the adjusting element 32 and the lifting guide element 34.
  • Fig. 1.7 is shown omitting the other components of the support part 6 of the lifting guide element 34 in conjunction with the adjusting element 32.
  • the support device 2 according to the invention is simple and robust in its construction and is 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 Bowden cables assigned to the drive trains 24 and 26 can, in principle, be actuated by separate furniture drives that are synchronized via control technology. However, for the sake of simplicity, actuation is preferably carried out by a common furniture drive that actuates both Bowden cables synchronously, as is the case, for example, with... EP 2 792 277 B1 is known. In this way, the use of the support part 6 during adjustment is reliably avoided.
  • the drive is provided via two drive trains assigned to the longitudinal beams 14, 18 and 16, 20, respectively. While maintaining the basic principle of 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.
  • FIG. 2 A second embodiment of a support device 2 according to the invention is shown. While in the embodiment according to Figs. 1.1 to 1.9 In the embodiment according to Fig. 2 The Bowden cable is the moving part. As seen from... Fig. 2 As can be seen, the one in Fig. 2 The Bowden cable, marked with reference numeral 36, is guided from the support device 2 in the area of the support pivot axis 8 to the furniture drive (not shown), which forms the electromechanical drive unit 10.
  • FIG. 3 A third embodiment of a support device 2 according to the invention is shown, which differs from the embodiment according to Fig. 2 differs in that the spring elements are formed by spring woods, of which in Fig. 3 For example, a sprung wooden block is marked with the reference number 38.
  • FIGs. 4.1 to 4.5 A fourth embodiment of a support device according to the invention is shown, which differs from the previous embodiments in that instead of two drive trains spaced apart from each other transversely to the longitudinal direction of the support device 2, a single drive train 26 is provided, which is effective between a single longitudinal beam 20 of the base part 4 and a single longitudinal beam 16 of the support part 6.
  • the embodiment differs according to Figs. 4.1 to 4.5
  • the embodiment differs from the preceding embodiments in that 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 adjusting lever arrangement 42 with at least one adjusting lever, which functions as an adjusting element within the meaning of the invention.
  • Figs. 4.1 to 4.3 represent the support device 2 in the end position of the adjustment movement, wherein in Fig. 4.2 and 4.3 For illustrative purposes, various components have been omitted.
  • Fig. 4.4 and Fig. 4.5 represent the support device in the unadjusted starting position of the adjustment movement, whereby also in Fig. 4.4 and Fig. 4.5 For illustrative purposes, various components have been omitted.
  • the setting lever arrangement 42 (see in particular) Fig. 4.5 ) a first On adjusting lever 44 on, whose one end is articulated and connected about a first articulation axis 46 to the output element 28 and the other end of which is articulated and connected about a second articulation axis 48 to one end of a second setting lever 50, the free end of which is in operative connection with a wedge-shaped lifting guide element 52.
  • the functional connection between the second setting lever 50 and the stroke guide element 52 is designed such that, starting from the unadjusted initial position of the adjustment movement (cf. Fig. 4.4 ) in a first kinematic phase, the setting levers 44, 50 perform a translational movement in an unset position, wherein the setting levers 44, 50 are guided in the linear guide 30 and the free end of the second setting lever 50 interacts with the stroke guide element 52 to pivot the support part 6 relative to the base part 4, and that in a second kinematic phase the free end of the second setting lever 50 runs against a stop, so that the setting levers 44, 50 pivot relative to each other about the second articulation axis 48 into position, wherein the support part 6 continues to pivot relative to the base part 4 about the support part pivot axis 8 until the end position of the adjustment movement is reached.
  • the lifting guide element 52 has a cross-section that widens at least section by section along the linear axis of the adjusting element.
  • the stroke guide element 52 is shaped such that its cross-section widens along the linear axis in such a way that the adjusting element is in contact with a section of smaller or minimum cross-section of the stroke guide element 52 in the area of the starting position of the adjusting movement and with a section of larger or maximum cross-section in the area of the end position of the adjusting movement. of the lifting guide element 52.
  • the lifting guide element 52 in the illustrated embodiment is wedge-shaped, with its cross-section widening in the direction of the support pivot axis 8, i.e. in the direction in which the adjusting lever arrangement 42, which acts as an adjusting element, moves from the starting position to the end position when adjusted.
  • the lifting guide element 52 can also be shaped such that its cross-section widens, at least in sections, in an arc-shaped or ramp-like manner. Any combination of arc-shaped 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 previously described and further embodiments of the invention explained in more detail below.
  • the positioning lever arrangement 42 which functions as an adjusting element, is in accordance with the embodiment shown in the Figs. 1.1 to 1.9 guided in a linear guide 30 formed by the U-profile of the longitudinal beam 18.
  • the furniture drive (electric motor drive unit) associated with the adjustment element is actuated such that the adjustment lever assembly 42 moves to the right in the linear guide 30 in the drawing.
  • the free end of the second adjustment lever 2 passes under the lifting guide element 52, causing the lifting guide element to pivot clockwise around the support pivot axis 8 in the drawing. This pivots the support part 6 relative to the base part 4 in the desired manner. Because the adjustment movement begins in the When the free end of the second setting lever 50 passes under the lifting guide element 52, the dead point of the adjustment of the support part 6 is overcome.
  • the free end of the second setting lever 50 runs against the end of the linear guide 30, which acts as a stop, so that the setting levers 44, 50 pivot relative to each other about the second articulation axis 2, thereby pivoting the support part 6 further about the support part pivot axis 8 until the in Fig. 4.1 The depicted end position of the adjustment movement has been reached.
  • 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 Figure 1 shows a modification of the preceding embodiment, which differs from it in that the setting levers 44, 50 have a greater length. In this way, the pivot stroke during the pivot adjustment of the support part 6 relative to the base part 4 is increased and the load on the electromechanical drive unit is reduced.
  • Fig. 5.1 shows the support device 2 in the end position of the adjustment movement, while Fig. 5.2 The support device 2 is shown in the unadjusted starting position of the adjustment movement.
  • Figs. 6.1 to 6.5 is a further variation of the embodiment according to Figs. 4.1 to 4.5 shown, which differs from the same in that the electromechanical drive device 10 is not based on the operating principle of a Bowden cable, but rather on the operating principle of a spindle drive.
  • the electromechanical drive unit 10 has an electric motor 56 which is connected via a worm gear in rotary drive connection with a rotatably mounted threaded spindle on which a spindle nut 58 is arranged in a rotationally secure and axially movable manner.
  • Such spindle drives are generally known to those skilled in the art from the field of furniture drives and are therefore not described in detail here.
  • the spindle nut 58 is connected to the setting lever arrangement 42 via tabs 60, 62 extending in the longitudinal direction of the linear guide 30, which can be formed, for example, by sheet metal strips and between which the threaded spindle is received.
  • the drive train 26 has a high rigidity.
  • a Bowden cable drive can be replaced by a drive with a spindle drive.
  • Figure 1 shows a further embodiment of a support device 2 according to the invention using a lever arrangement.
  • the lever arrangement has a single lever 66 pivotably mounted on the base part 4 about a fixed lever pivot axis 64, the free end of which has a roller 68 (see Figure 1).
  • Fig. 7.3 carries, on which the support part 6 rests loosely with its underside.
  • a lifting guide element 52 is attached to the underside of the lever 66, which interacts with an adjusting element to adjust the support part 6 relative to the base part 4; in this embodiment, the adjusting element is designed as a roller slide 68 (see figure).
  • the roller carriage 68 has rollers 70, 72 on its side facing the linear guide 30, 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-shaped contact surface that widens in cross-section towards the lever pivot axis 64.
  • the roller carriage 68 is in cable connection with a moving 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, while Figs. 7.2 to 7.4 The support device is shown in its initial position. Starting from this position, the Bowden cable drive is actuated so that the roller carriage 68 is pulled to the left in the linear guide 30 shown in the drawing. In doing so, the roller carriage 68 passes under the lifting guide element 52, so that the lever 66 is in Fig. 7.1 is pivoted counterclockwise. This causes the support part 6, which rests loosely on the free end of the lever 66, to pivot clockwise until the in Fig. 7.1 The depicted end position of the adjustment movement has been reached.
  • FIGs. 8.1 to 8.5 The illustration shows a modification of the preceding embodiment, which differs from it in that instead of a Bowden cable drive... a spindle drive 57 with a spindle nut 58 is provided, which is arranged on a threaded spindle 76.
  • Fig. 8.1 shows the support device 2 in the end position of the adjustment movement
  • Figs. 8.2 to 8.5 The support device 2 is shown in the starting position of the adjustment movement.
  • Fig. 8.5 The lifting guide element 52 used in the embodiment is shown on its own.
  • lever 66 has two lever parts 78, 80 spaced apart from each other in the radial direction of the threaded spindle 76 and parallel to each other, between which the threaded spindle 76 is guided during the adjustment movement.
  • Figure 2 shows a further embodiment of a support device 2 according to the invention, in which a lever arrangement 40 is arranged in the drive train between the base part 4 and the support part 6, which has a lever transmission 82.
  • the lever mechanism 82 has a first lever 84, which is pivotably mounted on the base part 4 about a stationary lever pivot axis 86 parallel to the support pivot axis 8.
  • the end of the first lever 84 opposite the lever pivot axis 86 is pivotally connected at a first connection point 90 to one end of a second lever 92 about a first lever pivot axis 88 parallel to the lever pivot axis 86.
  • the other end of the second lever 92 is pivotally connected at a second connection point 96 to one end of a third lever 98 about a second lever pivot axis 94 parallel to the first lever pivot axis 88.
  • the other end of the third lever 98 is pivotally guided in a slotted guide 100 so as to be displaceable in the axial direction of the linear axis.
  • 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, it is guided slidably on the same and articulated to the same.
  • Fig. 9.5 This illustrates that the stroke 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.
  • Figs. 9.6 to 9.8 These are schematic representations and show a kinematic model of the 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 slotted guide 100 towards the lever pivot axis 86, with the support part 6 resting on the third lever 98 at the connection points 90, 96, and the third lever 98 shifting relative to the support part 6 towards its free end.
  • the third lever 98 comes to rest against the end of the slotted guide 100 facing the lever pivot axis 6, thus preventing any further translational movement towards the lever pivot axis 86 and causing the third lever 98 to pivot counterclockwise.
  • the support element 6 lifts off the second lever 92 at the first connection point 90, with the second connection point 96 shifting towards the free end of the support element 6, as shown in Fig. 9.7 depicted.
  • Fig. 9.8 shows the end position of the adjustment movement.
  • Fig. 9.1 shows that the lever arrangement formed from levers 84, 92 and 98 forms a parallelogram-like arrangement in the end position of the adjustment movement.
  • first lever 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 the levers 84, 92, and 98 are dimensioned such that the length of the first lever 84 plus the length of the second lever 92 equals the length of the third lever plus the distance between the lever pivot axis 86 and the end of the slotted guide 100 furthest from the lever pivot axis 86 along the linear axis.
  • the third lever 98 consists of two parallel lever parts spaced apart from each other in the axial direction of the lever pivot axis 86, between which, in the initial position of the adjusting movement, the second lever 92 and the end of the first lever 84 facing the second lever 92 are received, as shown from Fig. 9.1 as is evident.
  • Figure 1 shows another embodiment of a support device according to the invention using a lever mechanism 102.
  • Fig. 10.1 shows the support device 2 in the end position of the adjustment movement
  • Fig. 10.2 and Fig. 10.3 Show the support device 2 in the starting position of the adjustment movement.
  • Figs. 10.4 to 10.7 These are schematic views to illustrate 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 pivotably connected to the base part 4 about a support part pivot axis 8.
  • An electric motor drive (furniture drive) is provided for pivoting the support part 6 relative to the base part 4, which is connected in drive connection with an adjusting element that is translationally movable along a linear axis.
  • the lever mechanism 102 has a single-armed first lever 104, which is pivotably mounted on the base part 4 about a stationary lever pivot axis 106 parallel to the support part pivot axis 8.
  • the lever mechanism 102 further has a two-armed second lever 108, wherein the free end of the first lever 104, facing away from the lever pivot axis 106, is pivotally connected to the second lever 108 about a first lever pivot axis 110, located at a distance 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 pivotally connected to the support part 6 so as to be slidably displaceable in the longitudinal direction.
  • the adjusting element is formed by a slide 114, which is in drive connection with the electromechanical drive unit and is movable in the linear guide 112 under the action of the same.
  • Figs. 10.3 to 10.6 These are schematic representations and show a kinematic model of the embodiment to illustrate the kinematic phases.
  • the support part 6 lies flat on the base part 4, with the levers 104 and 108 lying flat in the linear guide 112. In this position, the end of the second lever 108 facing the support part 6 is spaced apart from the free end of the support part 6.
  • the slide 114 is driven by means of the electromechanical drive device so that it moves to the left in the drawing and presses against the end of the second lever guided in the linear guide 112, so that this end is pushed to the left in the linear guide 112 in the drawing, causing the first lever 104 in the drawing to pivot counterclockwise around the lever pivot axis 106 and the second lever 108 to pivot clockwise around the lever joint axis 110 relative to the first lever 104.
  • the second lever 108 pivots further clockwise about the lever joint axis 110, whereby the support part 6 is pivoted further clockwise in the drawing, as shown in Fig. 10.5 depicted.

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

Claims (15)

  1. Dispositif de support (2) pouvant être ajusté par un moteur électrique pour supporter un rembourrage d'un meuble destiné à s'asseoir et/ou à s'allonger, en particulier d'un matelas d'un lit,
    avec une partie de base (4),
    avec une partie de support (6), qui est reliée à la partie de base (4) de manière à pouvoir pivoter autour d'un axe de pivotement de partie de support (8),
    avec un dispositif d'entraînement (10) à moteur électrique, qui est en liaison fonctionnelle avec la partie de base (4) et la partie de support (6) pour l'ajustement par pivotement de la partie de support (6) par rapport à la partie de base (4),
    dans lequel la partie de base (4) et la partie de support (6) sont réalisées de telle manière et sont en liaison fonctionnelle avec le dispositif d'entraînement (10) de telle manière que la partie de support (6) peut être ajustée entre une partie de départ non ajustée, dans laquelle la partie de support (6) repose à plat sur la partie de base (4), et une position finale du déplacement d'ajustement, dans laquelle la partie de support (6) est disposé selon un angle par rapport à la partie de base (4),
    dans lequel
    le dispositif d'entraînement (10) présente au moins une chaîne cinématique (24, 26), par laquelle le dispositif d'entraînement (10) est en liaison d'entraînement avec un élément d'ajustement (32) mobile par translation le long d'un axe linéaire de telle manière que l'élément d'ajustement (32) est mobile entre une position de départ, qui correspond à la position de départ non ajustée de la partie de support (6), et une position finale, qui correspond à la position finale du déplacement d'ajustement, au moyen du dispositif d'entraînement (10), dans lequel
    le dispositif d'entraînement (10) est réalisé et est en liaison fonctionnement avec l'élément d'ajustement (32) de telle manière que, lors de l'actionnement du dispositif d'entraînement (10), l'élément d'ajustement (32) est déplacé vers l'axe de pivotement de partie de support (8) de manière à s'éloigner du dispositif d'entraînement (10) par translation le long de son axe linéaire pour ajuster la partie de support (6) par rapport à la partie de base (4), et
    dans lequel
    est disposé sur au moins une des parties (4, 6) au moins un élément de guidage de levage (34) agissant à la manière d'une cale, qui est mis en forme et est en liaison fonctionnelle ou peut être amené en liaison fonctionnement avec l'élément d'ajustement (32) de telle manière que lors d'un déplacement relatif entre l'élément d'ajustement (32) et l'élément de guidage de levage (34) le long de l'axe linéaire, la partie de support (6) est pivotée autour de l'axe de pivotement de partie de support (8) par rapport à la partie de base (4).
  2. Dispositif de support selon la revendication 1, caractérisé en ce que
    - l'élément de guidage de levage (34) agissant à la manière d'une cale est disposé sur la partie de support (6) et/ou sur la partie de support (6) dans la zone de l'axe de pivotement de partie de support (8), et/ou
    - l'élément d'ajustement (32) est disposé sur la partie de base (4).
  3. Dispositif de support selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément d'ajustement (32) est réalisé à la manière d'un ergot et de manière à faire saillie de la partie de base (4) et est logé, dans la position de départ du déplacement d'ajustement, dans un évidement formé par la partie de support (6), dont la paroi intérieure forme une surface d'appui pour l'élément d'ajustement (32), dont la section transversale se rétrécit de telle manière en direction de l'axe de pivotement de partie de support (8) que la partie de support (6) peut être pivotée ou est pivotée autour de l'axe de pivotement de partie de support (8) lors d'un déplacement par translation de l'élément d'ajustement (32) en direction de l'axe de pivotement de partie de support (8).
  4. Dispositif de support selon la revendication 3, caractérisé en ce que l'évidement est formé dans la partie de support (6) ou dans un composant séparé relié à la parte de support (6).
  5. Dispositif de support selon la revendication 4, caractérisé en ce que le composant est constitué de matière plastique, de préférence est réalisé comme une partie moulée par injection.
  6. Dispositif de support selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'entraînement (10) présente en supplément
    - au moins un câble Bowden en liaison fonctionnelle avec un moteur électrique, avec une gaine et un câble de traction logé dans la gaine, dont la partie mobile est en liaison fonctionnelle avec l'élément d'ajustement pour le déplacement par translation de celui-ci le long de l'axe linéaire.
  7. Dispositif de support selon l'une des revendications précédentes, caractérisé en ce que, pour ajuster la partie de support (6) par rapport à la partie de base (4), l'élément d'ajustement (32) se trouvant en appui sur l'élément de guidage de levage (34), se déplace par translation pat rapport à celui-ci, dans lequel l'élément de guidage de levage (34) est réalisé ou mis en forme de telle manière et est en liaison fonctionnelle avec l'élément d'ajustement (32) de telle manière que, lors d'un déplacement relatif par translation entre l'élément d'ajustement (32) et l'élément de guidage de levage (34), la partie de support (6) est pivotée autour de l'axe de pivotement de partie de support (8) par rapport à la partie de base (4).
  8. Dispositif de support selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un élément de guidage de levage (34) présente une section transversale s'élargissant au moins par endroits le long de l'axe linéaire de l'élément d'ajustement (32), dans lequel
    la section transversale s'élargit le long de l'axe linéaire de manière préférée de telle manière que l'élément d'ajustement (32) se trouve en appui sur une section de la section transversale plus petite ou minimale de l'élément de guidage de levage (34) dans la zone de la position de départ du déplacement d'ajustement et en appui sur une section transversale de la section transversale supérieure ou maximale de l'élément de guidage de levage (34) dans la zone de la position finale du déplacement d'ajustement.
  9. Dispositif de support selon la revendication 8, caractérisé en ce qu'au moins un élément de guidage de levage (34) est mis en forme de telle manière que sa section transversale s'élargit au moins par endroits en forme d'arc ou à la manière d'une rampe.
  10. Dispositif de support selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un ensemble de levier (40) avec au moins un levier est disposé dans la chaîne cinématique (24, 26) entre la partie de base (4) et la partie de support (6).
  11. Dispositif de support selon la revendication 10, caractérisé en ce que l'ensemble de levier 40) présente un ensemble de levier de redressement (42) avec au moins un levier de redressement (44, 50), dans lequel
    l'ensemble de levier de redressement (42) présente en particulier un premier levier de redressement (44), dont une extrémité est reliée de manière articulée et autour d'un premier axe d'articulation (46) à l'organe d'entraînement (28) ou à un composant relié à celui-ci et dont l'autre extrémité est reliée de manière articulée et autour d'un deuxième axe d'articulation (48) à un deuxième levier de redressement (50), dont l'extrémité libre est en liaison fonctionnelle avec un élément de guidage de levage (34) agissant à la manière d'une cale, dans lequel la liaison fonctionnelle entre le deuxième levier de redressement (50) et l'élément de guidage de levage (34) est configurée de telle manière qu'en partant de la position de départ du déplacement d'ajustement, les leviers de redressement (44, 50) exécutent, dans une première phase cinématique, dans l'état non redressé, un déplacement par translation, dans lequel l'extrémité libre du deuxième levier de redressement (50) coopère avec l'élément de guidage de levage (34) pour faire pivoter la partie de support (6) par rapport à la partie de base (4), et que, dans une deuxième phase cinématique, l'extrémité libre du deuxième levier de redressement (50) se déplace contre une butée si bien que les leviers de redressement (44, 50) et le deuxième axe d'articulation (48) se redressent en pivotant les uns par rapport aux autres, ce qui permet de continuer à faire pivoter la partie de support (6) par rapport à la partie de base (4) autour de l'axe de pivotement de partie de support jusqu'à atteindre la position finale du déplacement d'ajustement.
  12. Dispositif de support selon l'une des revendications précédentes, caractérisé en ce que l'élément d'ajustement (32) est guidé le long de l'axe linéaire dans un système de guidage linéaire (30) formé sur la partie de base (4), dans lequel l'ensemble de levier de redressement (42) est guidé de manière préférée dans le système de guidage linéaire (30).
  13. Dispositif de support selon l'une des revendications 10 à 12, caractérisé en ce que l'ensemble de levier présente un engrenage à levier (82 ou 102).
  14. Dispositif de support selon la revendication 13, caractérisé en ce que l'engrenage à levier (82) présente un premier levier (84), qui est monté sur la partie de base (4) de manière à pouvoir pivoter autour d'un axe de pivotement de levier (86) stationnaire parallèle à l'axe de pivotement de partie de support (8), dans lequel est reliée de manière articulée et sur un premier point de liaison (90) de manière articulée autour d'un premier axe d'articulation (88) parallèle à l'axe de pivotement de levier à l'extrémité opposée à l'axe de pivotement de levier (86) une extrémité d'un deuxième levier (92), dont l'autre extrémité est reliée à une extrémité d'un troisième levier (98) de manière articulée et de manière à pouvoir pivoter sur un deuxième point de liaison (96) autour d'un deuxième axe d'articulation (94) parallèle au premier axe d'articulation (88), dont l'autre extrémité est guidée de manière à pouvoir pivoter et de manière mobile par coulissement dans un système de guidage à trou oblong dans la direction axiale de l'axe linéaire, dans lequel l'extrémité du troisième levier (98) reliée au deuxième levier (92) est guidée sur le deuxième point de liaison (96) de manière mobile par coulissement dans la direction longitudinale de la partie de support (6) sur celle-ci et est reliée de manière articulée à celle-ci, dans lequel le levier (84, 92, 98) est réalisé et est relié à et est en liaison fonctionnelle avec la partie de base (4) ou à la partie de support (6) et au dispositif d'entraînement de telle manière que :
    - en partant d'une position de départ du déplacement d'ajustement, le premier levier (84) est pivoté, dans une première phase cinématique, autour de l'axe de pivotement de levier (8) stationnaire, dans lequel la partie de support (6) est pivotée autour de l'axe de pivotement de partie de support (8) tout en reposant sur le deuxième levier (92), dans lequel le deuxième levier (92) se déplace par coulissement de manière à s'éloigner de l'axe de pivotement de partie de support (8) dans la direction longitudinale de la partie de support (6) et dans lequel le troisième levier (98) se déplace par coulissement dans une direction à l'écart de l'axe de pivotement de partie de support (8) dans le système de guidage à trou oblong (100) jusqu'à ce que le troisième levier (98) se déplace dans le système de guidage à trou oblong (100) contre une butée formée par l'extrémité du système de guidage à trou oblong (100) opposé à l'axe de pivotement de partie de support (8), et
    - dans une deuxième phase cinématique, le premier levier (84) continue à être pivoté autour de l'axe de pivotement de levier (86) stationnaire, dans lequel le troisième levier (98) est pivoté autour de l'extrémité du système de guidage à trou oblong (100) opposée à l'axe de pivotement de partie de support (8), dans lequel la partie de support (6) se soulève du premier point de liaison (90) entre le premier levier (84) et le deuxième levier (92) et le deuxième point de liaison (96) entre le deuxième levier (92) et le troisième levier (98) se déplace par coulissement en direction de l'extrémité de la partie de support opposée au premier axe de pivotement jusqu'à atteindre la position finale du déplacement d'ajustement.
  15. Dispositif de support selon la revendication 13, caractérisé en ce que l'engrenage à levier (102) présente un premier levier (104) à un bras, qui est monté sur la partie de base (4) de manière à pouvoir pivoter autour d'un axe de pivotement de levier (106) stationnaire parallèle à l'axe de pivotement de partie de support (8), et présente un deuxième levier (108) à deux bras, dans lequel l'extrémité livre du premier levier (104) opposée à l'axe de pivotement de levier (106) est reliée au deuxième levier (108) de manière éloignée de ses extrémités de manière articulée autour d'un premier axe d'articulation (110), dans lequel une extrémité du deuxième levier (108) est guidée de manière mobile par translation par rapport à l'axe de pivotement de levier (106) dans un système de guidage linéaire et dans lequel l'autre extrémité du deuxième levier (108) est reliée de manière articulée et dans la direction longitudinale de la partie de support (6) de manière mobile par coulissement à celle-ci, dans lequel la liaison fonctionnelle entre l'engrenage à levier (102), le dispositif d'entraînement (10) et la partie de base (4) et la partie de support (6) également est configurée de telle manière que
    - en partant d'une position de départ du déplacement d'ajustement, l'extrémité du deuxième levier (108) guidée dans le système de guidage linéaire se déplace par coulissement, dans une première phase cinématique, en direction de l'axe de pivotement de levier (106), dans lequel l'autre extrémité du deuxième levier (108) se trouve dans la zone de l'extrémité de la partie de support (6) opposée à l'axe de pivotement de partie de support (8), ce qui permet de faire pivoter la partie de support (6) autour de l'axe de pivotement de partie de support (8), et
    - dans une deuxième phase cinématique, l'extrémité du deuxième levier (108) tournée vers l'axe de pivotement de levier (106) continue à se déplacer par coulissement en direction de l'axe de pivotement de levier (106), tandis que l'extrémité du deuxième levier (108) opposée à l'axe de pivotement de levier (106) se déplace par coulissement en direction de l'axe de pivotement de partie de support (8) par rapport à la partie de support (6), ce qui permet de continuer à faire pivoter la partie de support (6) autour de l'axe de pivotement de partie de support (8) par rapport à la partie de base (4) jusqu'à atteindre la position finale du déplacement d'ajustement.
EP21755440.1A 2020-08-12 2021-08-03 Dispositif de support réglable au moyen d'un moteur électrique Active EP4142545B1 (fr)

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

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DE102023117637B4 (de) 2023-07-04 2025-07-17 Pampero AG Bett, Möbel und elektromotorisch verstellbare Stützeinrichtung

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WO2022033928A1 (fr) 2022-02-17
CN116056610A (zh) 2023-05-02
DE202021104109U1 (de) 2021-11-15
DE102021119984A1 (de) 2022-02-17
EP4142545A1 (fr) 2023-03-08
CN116056610B (zh) 2026-03-31
DE112021002148A5 (de) 2023-03-16
DE102021120007A1 (de) 2022-02-17

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