EP1521539A1 - Elektromotorischer möbelantrieb - Google Patents
Elektromotorischer möbelantriebInfo
- Publication number
- EP1521539A1 EP1521539A1 EP03763648A EP03763648A EP1521539A1 EP 1521539 A1 EP1521539 A1 EP 1521539A1 EP 03763648 A EP03763648 A EP 03763648A EP 03763648 A EP03763648 A EP 03763648A EP 1521539 A1 EP1521539 A1 EP 1521539A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- furniture
- guide element
- drive means
- support device
- 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.)
- Granted
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
- A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
-
- 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 electromotive furniture drive of the type mentioned in the preamble of claim 1 for adjusting parts of a piece of furniture relative to one another.
- Furniture drives of this type are generally known and are used, for example, as adjusting drives for adjusting parts of a slatted frame relative to one another.
- EP 0 372 032 B1 discloses a furniture drive of the type in question which has a drive means which is linearly movable along a linear movement axis for pivoting a pivot element which is in operative connection with a part of the furniture to be adjusted and which can be pivoted about a pivot axis when the furniture drive is in the assembly position having.
- the linearly movable drive means is formed by a spindle nut of a spindle drive
- the swivel element is formed by a swivel lever which is non-rotatably connected to a swivel shaft which is in operative connection with the part of the furniture to be adjusted.
- the spindle nut acts loosely on the end of the pivot lever facing away from the pivot shaft.
- the adjustment force that can be exerted on the part of the piece of furniture to be adjusted by means of the furniture drive decreases the more sharply the more acute the angle between the linear axis of movement of the drive means and the longitudinal axis of the pivot lever. It is particularly disadvantageous here that the angle becomes more acute the further the furniture drive approaches an end position of the adjustment movement, in which, however, the reaction force of the furniture acting on the furniture drive and thus the adjustment force is usually the greatest.
- the invention has for its object to provide a furniture drive of the type mentioned in the preamble of claim 1, which does not have the disadvantage of the known furniture drives, in which a drop occurring during the adjustment movement of the adjusting force to be applied by means of the furniture drive is substantially avoided and which is also simple and therefore inexpensive to manufacture.
- This object is achieved by the teaching specified in claim 1.
- the invention is based on the knowledge that the effective length of the lever arm of the swivel element changes in that during the adjustment movement the point at which the drive means engages the swivel element is displaced along the linear movement axis of the drive means. Accordingly, the invention is based on the idea of providing means which, during the adjustment movement, hold the drive means in engagement with the pivoting element at a point which is essentially fixed along the linear movement axis. In this way it is achieved that the effective length of the lever arm essentially does not change during the adjustment movement, so that the adjustment force which can be exerted on the part of the piece of furniture to be adjusted by means of the furniture drive is essentially constant during the entire adjustment movement. This means that substantially uniformly large forces can be exerted on the part of the piece of furniture to be adjusted during the entire adjustment movement, in particular also in the end positions of the adjustment movement.
- the furniture drive according to the invention is simple and therefore inexpensive to manufacture and robust in construction. It is suitable for adjusting any part of a piece of furniture, but in particular for adjusting adjustable parts of a support device for upholstering a piece of seating and / or reclining furniture, for example a slatted frame.
- the swivel element or a component connected to the swivel element points in the swivel direction. tion on an extension which is selected so that the drive means is constantly engaged with the pivoting element during the adjustment movement with a substantially fixed point.
- the swivel element can, for example, have a plurality of lever arms which follow one another in the swivel direction and which successively come into engagement with the drive means in such a way that the drive means is held in engagement with the swivel element at a point which is essentially fixed along the linear movement axis during the adjustment movement.
- a particularly simple and therefore inexpensive to produce embodiment of the basic idea of the teaching according to the invention provides that the means which hold the drive means in engagement with the pivoting element at a point which is substantially stationary along the linear movement axis, in the manner of a cam disk have formed guide element for the drive means, with which the drive means is in engagement in the mounting position of the furniture drive.
- the guide element has a contour that is essentially delimited by an arc of a circle.
- the guide element is particularly simple and therefore inexpensive to manufacture.
- the guide element based on the pivot axis, can extend over an angle of 360 ° or approximately 360 °, so that the guide element has essentially the contour of a full circle.
- the guide element is designed essentially as a circular segment, in particular a quarter-circle segment. Such an extension of the guide element in the pivoting direction is generally sufficient to ensure that the drive means engage the pivoting element at a point that is essentially stationary along the linear movement axis during the adjustment movement.
- Embodiment form the guide element and the drive means a cam drive.
- the angular velocity at which the swivel element is swiveled changes along the linear movement axis at a constant speed of the drive means.
- the drive means can be designed as traction means or pressure means, as is provided by further developments. According to other developments of the teaching according to the invention, the drive means can be flexible or essentially rigid. •
- the drive means has teeth on its surface which is in engagement with the guide element in the assembly position of the furniture drive for interaction with teeth of the guide element which are essentially complementary thereto.
- ken the guide element and the drive means together in the manner of a pinion is particularly simple and therefore inexpensive to manufacture.
- it is particularly robust and suitable for applying large forces.
- the guide element is expediently designed as a gearwheel or as a gearwheel segment, as is provided by a further development.
- Gears are available as simple and therefore inexpensive standard components, so that the structure of the furniture drive according to the invention is further simplified.
- the drive means has a chain in such a way that a chain drive is formed.
- This embodiment is also particularly simple and therefore inexpensive to manufacture and is suitable for applying large forces.
- the drive means has a toothed rack such that a toothed rack drive is formed.
- This embodiment is also particularly simple and therefore inexpensive to manufacture and particularly robust.
- the drive means has a rope or belt for interacting with a guide element designed in the manner of a rope drum or rope pulley, in such a way that a rope drive is formed.
- the structure of the furniture drive according to the invention is further simplified.
- the guide element can be connected to the pivot element by a separate, non-rotatably connected element Component be formed.
- the structure of the furniture drive according to the invention can be further simplified in that the guide element is formed in one piece with the swivel element or is formed by the swivel element, as is provided by a development of the teaching according to the invention.
- the linearly movable drive means can be designed in any suitable manner.
- An advantageous development of the teaching according to the invention provides that the linearly movable drive means is connected to a linearly movable drive element of a spindle drive or is formed by the linearly movable drive element of a spindle drive.
- Such spindle drives are available as simple and inexpensive standard components and are suitable for the transmission of large forces and are robust.
- the linearly movable drive element of the spindle drive can be a spindle nut that is secured against rotation and movable in the axial direction on a spindle that can be driven in rotation.
- the linearly movable drive element of the spindle drive can, however, also be a spindle which is movable in its axial direction and is mounted such that it cannot rotate, on which a stationary, rotationally drivable spindle nut is arranged.
- the drive means is fixed to the swivel element or the guide element.
- a support device according to the invention adjustable by an electric motor, for upholstering a seating and / or reclining furniture, in particular a mattress Bed is specified in claim 20. Further developments of the support device according to the invention are specified in subclaims 21 to 38.
- Fig. 1 is a top view of a support device designed as a slatted frame according to the invention, with a first
- FIG. 2 shows a section along a line II-II in FIG. 1, FIG. 3 in the same representation as FIG. 2 on a larger scale than FIG. 2, a detail from FIG. 2 in the area of the furniture drive,
- FIG. 4 in the same representation as FIG. 3, a second embodiment of a furniture drive according to the invention
- FIG. 5 shows a view from the left of a cable pulley of the furniture drive according to FIG. 4 and FIG. 6 on a larger scale compared to FIG. 4 in the same representation as FIG. 3 shows a third embodiment of a furniture drive according to the invention.
- FIG. 1 an embodiment of a support device 2 according to the invention is shown, which is designed in this embodiment as a slatted frame and has a frame 4 to which a stationary central support member 6 is connected.
- a leg support part 8 is connected to the central support part 6 in an articulated manner and pivotable about a horizontal pivot axis, with the leg support part 8 facing away from it
- a calf support part 10 is connected in an articulated manner and pivotable about a horizontal pivot axis. With the end of the middle support part 6 facing away from the leg support part 8, an upper body support part 12 is connected in an articulated and pivotable manner about a horizontal pivot axis, with the end facing away from the central support part 6 in an articulated manner and a head support part 14 is pivotable about a horizontal pivot axis.
- the manner in which the support parts 6 to 14 are connected to one another is generally known and is therefore not explained in more detail here.
- the support parts 6 to 14 are provided on their upper side with resilient slats, of which only one slat is provided with the reference number 16 in the drawing.
- the slats 16 serve to provide resilient support for an upholstery of a piece of seating and / or reclining furniture, for example a mattress of a bed, not shown in the drawing and supported by the support device 2.
- the support device 2 according to the invention is provided with a first embodiment of a furniture drive 18 according to the invention, which in this embodiment for adjusting the upper body support part 12 and the head support part 14 relative to the middle one Support part 6 is used.
- the furniture drive 18 is accommodated in a hollow side rail 19 of the central support part 6.
- FIG. 2 shows a section along a line II-II in FIG. 1.
- FIG. 3 shows the furniture drive 18 according to the invention on a larger scale than in FIG. 2.
- the furniture drive 18 has an electric motor 20 which is fastened to a wall of the side rail 19 and which is connected via a gear arrangement 22 in rotary drive connection to a stationary spindle 24 of a spindle drive which can be driven in rotation.
- a spindle nut 26 is arranged on the spindle 26 in such a way that it cannot rotate and can move back and forth in the axial direction in the direction of a double arrow 28.
- the spindle nut 26 moves to the left or right along a linear movement axis 30 in FIG. 3.
- the support device 2 has an adjustment fitting 32 according to the invention, which in this exemplary embodiment has a pivot shaft 36 which is pivotably mounted on the frame 4 of the support device 2 about a pivot axis 34 and to which a pivot lever 38 is connected in a rotationally fixed manner.
- the pivot lever 38 is connected to the upper body support part 12 and the head support part 14 in such a way that the upper body support part 12 and the head support part 14 are pivoted about the pivot axis 34 when the pivot shaft 36 is pivoted.
- the adjustment fitting 32 has a swivel element which is connected to the swivel shaft 36 in a manner fixed against relative rotation, which in this exemplary embodiment is designed as a gear segment 40 and engages in the form of a flexible traction means a chain 42 is located, one end of which is fixed to the gear segment 40 and the other end to the spindle nut 26.
- the chain 42 forms a drive means of the furniture drive 18 that is movable along the linear movement axis 30.
- means are provided which hold the drive means, in the exemplary embodiment according to FIG. 1 the chain 42, in engagement with the gearwheel segment 40 forming the pivoting element at a point P which is essentially fixed along the linear movement axis 30.
- these means are formed in that the gear segment 40 is designed as a guide element for the chain 42 designed in the manner of a cam disk.
- the gear segment 40 has an essentially delimited circular arc shape and is designed as a quarter circle segment. During the adjustment movement, the gear segment 40 pivots about the
- the electric motor 20 drives the spindle 24 via the gear arrangement 22 in such a way that they
- the chain 42 is always in engagement with the gearwheel segment 40 at the point P, so that the effective length of the auxiliary arm 44, with which the chain 42 engages the pivot shaft 36, does not change during the adjustment movement. Since the effective length of the lever arm 44 does not change during the adjustment movement, when the drive torque of the electric motor 20 remains constant, that which can be applied by means of the furniture drive 18 remains on the
- FIG. 4 shows a further exemplary embodiment of a furniture drive 18 according to the invention, which differs from the exemplary embodiment according to FIG. 3 in that the drive means has a flexible rope 46 instead of a chain.
- the swivel element which is connected in a rotationally fixed manner to the swivel lever 38 and which, in this exemplary embodiment, forms a guide element for the cable 46 designed in the manner of a cam plate, is designed in this exemplary embodiment as a pulley 48 acting in the manner of a cable drum.
- One end of the rope 46 is fixed to the pulley 48, while the other end is fixed to the spindle nut 26.
- the cable 46 is in engagement with the cable pulley 48 at a point P which is substantially fixed along the linear movement axis 30 during the adjustment movement, so that the effective length of the lever arm 44 with which the cable 46 is attached the pivot shaft 36 engages during the adjustment movement essentially does not change.
- Fig. 5 which shows a view from the left in Fig. 4, it can be seen that the pulley 48 is formed by two interconnected plates 44 whose ends facing away from the pivot axis 34 are bent so that a groove 54 is formed in of the rope 46 is guided. The inclusion of the rope 46 in the groove 54 prevents the rope 46 from slipping off the rope pulley 48 during the adjustment movement.
- FIG. 6 shows a third exemplary embodiment of a furniture drive 18 according to the invention, which differs from the exemplary embodiment according to FIG. 3 in that the drive means instead of a chain 42 has a toothed rack 56 which is molded onto the end of the spindle nut 26 facing the gear segment 40 is.
- the rack 56 and the spindle nut 26 can, for example, in one piece through a molded part be made of plastic.
- the rack 56 has a toothing which is essentially complementary to the toothing of the gear segment 40.
- the toothed rack 56 is held in engagement with the gearwheel segment 40 at a point P which is substantially stationary along the linear movement axis 30, so that the length of the lever arm with which the toothed rack 56 engages on the pivot shaft 36 increases , essentially does not change.
- the furniture drive 18 according to the invention is simple and inexpensive to manufacture and robust in construction.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Transmission Devices (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Liquid Crystal (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Legs For Furniture In General (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Elimination Of Static Electricity (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10231290 | 2002-07-10 | ||
DE10231290A DE10231290B3 (de) | 2002-07-10 | 2002-07-10 | Elektromotorischer Möbelantrieb |
PCT/EP2003/006548 WO2004006723A1 (de) | 2002-07-10 | 2003-06-20 | Elektromotorischer möbelantrieb |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1521539A1 true EP1521539A1 (de) | 2005-04-13 |
EP1521539B1 EP1521539B1 (de) | 2007-02-14 |
EP1521539B2 EP1521539B2 (de) | 2013-02-20 |
Family
ID=29761874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03763648A Expired - Lifetime EP1521539B2 (de) | 2002-07-10 | 2003-06-20 | Elektromotorischer möbelantrieb |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1521539B2 (de) |
JP (1) | JP4317129B2 (de) |
CN (1) | CN100339032C (de) |
AT (1) | ATE353577T1 (de) |
AU (1) | AU2003250841A1 (de) |
DE (2) | DE10231290B3 (de) |
ES (1) | ES2282672T3 (de) |
WO (1) | WO2004006723A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20217698U1 (de) | 2002-07-10 | 2004-04-01 | Cimosys Ag | Verstellvorrichtung für Betten, Matratzen, Sessel u.dgl. |
CN100411569C (zh) * | 2004-04-05 | 2008-08-20 | 安得士股份有限公司 | 床 |
DE102006017972B4 (de) | 2006-04-13 | 2018-03-01 | Dewertokin Gmbh | Nachrüstsatz für ein Hubbett mit Zugmittelverstellung und Hubbett |
DE202016100780U1 (de) * | 2016-02-16 | 2017-05-18 | Dewertokin Gmbh | Möbelantriebssystem |
EP3207828B1 (de) * | 2016-02-16 | 2018-09-26 | DewertOkin GmbH | Möbelantrieb |
DE202016100782U1 (de) * | 2016-02-16 | 2017-05-18 | Dewertokin Gmbh | Möbelantrieb |
WO2021245641A1 (en) * | 2020-06-03 | 2021-12-09 | Polyron Zikim Ach Ltd | Adjustable mattress frame and a method for adjusting the frame |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE584542C (de) * | 1932-10-10 | 1933-09-21 | Clemens Schauerte | Selbstsperrende Vorrichtung zum Verstellen der Hoehenlage der Rueckenlehne von Ruhelagern |
CH594388A5 (de) * | 1975-04-07 | 1978-01-13 | Senn R Ag | |
NZ194461A (en) * | 1980-07-28 | 1983-09-02 | Wright H S | Adjustable bed |
DE8800360U1 (de) * | 1988-01-14 | 1988-05-26 | Niko Gesellschaft für Antriebstechnik mbH, 5253 Lindlar | Antrieb für Lattenroste (II) |
DE8806094U1 (de) * | 1988-05-07 | 1988-07-07 | Dewert, Eckhart, 4904 Enger | Verstelleinrichtung für ein mit mindestens einem schwenkbaren Rückenteil und einem schwenkbaren Fußteil ausgerüstetes Lattenrost |
DE9110121U1 (de) * | 1991-08-08 | 1991-09-26 | Kemmann & Koch, 5620 Velbert | Gelenkband |
IT1255477B (it) * | 1992-07-31 | 1995-11-06 | Egidio Marcantoni | Dispositivo per l'azionamento di reti per letti o divani con testata e/o pediera ad angolazione variabile |
DE9318082U1 (de) † | 1993-11-26 | 1994-02-24 | Dewert Antriebs- Und Systemtechnik Gmbh & Co. Kg, 32278 Kirchlengern | Elektromotorische Verstelleinrichtung |
DE10017978C2 (de) * | 1999-12-23 | 2001-10-31 | Cimosys Ag Goldingen | Möbelantrieb |
DE10046750C1 (de) * | 2000-09-21 | 2002-04-18 | Cimosys Ag Goldingen | Als Doppelantrieb ausgebildeter Möbelantrieb |
DE10046752C1 (de) * | 2000-09-21 | 2002-03-14 | Westmont Design Gmbh | Als Doppelantrieb ausgebildeter Möbelantrieb |
-
2002
- 2002-07-10 DE DE10231290A patent/DE10231290B3/de not_active Withdrawn - After Issue
-
2003
- 2003-06-20 AU AU2003250841A patent/AU2003250841A1/en not_active Abandoned
- 2003-06-20 AT AT03763648T patent/ATE353577T1/de not_active IP Right Cessation
- 2003-06-20 DE DE50306519T patent/DE50306519D1/de not_active Expired - Lifetime
- 2003-06-20 JP JP2004520407A patent/JP4317129B2/ja not_active Expired - Fee Related
- 2003-06-20 EP EP03763648A patent/EP1521539B2/de not_active Expired - Lifetime
- 2003-06-20 WO PCT/EP2003/006548 patent/WO2004006723A1/de active IP Right Grant
- 2003-06-20 ES ES03763648T patent/ES2282672T3/es not_active Expired - Lifetime
- 2003-06-20 CN CNB038162261A patent/CN100339032C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004006723A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1521539B2 (de) | 2013-02-20 |
AU2003250841A1 (en) | 2004-02-02 |
DE10231290B3 (de) | 2004-01-22 |
JP2005532132A (ja) | 2005-10-27 |
DE50306519D1 (de) | 2007-03-29 |
ATE353577T1 (de) | 2007-03-15 |
ES2282672T3 (es) | 2007-10-16 |
EP1521539B1 (de) | 2007-02-14 |
WO2004006723A1 (de) | 2004-01-22 |
CN100339032C (zh) | 2007-09-26 |
CN1665431A (zh) | 2005-09-07 |
JP4317129B2 (ja) | 2009-08-19 |
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