WO2009000349A1 - Electromotive furniture drive - Google Patents
Electromotive furniture drive Download PDFInfo
- Publication number
- WO2009000349A1 WO2009000349A1 PCT/EP2008/001699 EP2008001699W WO2009000349A1 WO 2009000349 A1 WO2009000349 A1 WO 2009000349A1 EP 2008001699 W EP2008001699 W EP 2008001699W WO 2009000349 A1 WO2009000349 A1 WO 2009000349A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- furniture drive
- control switch
- drive according
- furniture
- movement
- Prior art date
Links
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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 electromotive furniture drive referred to in the preamble of claim 1 for adjusting parts of a piece of furniture relative to each other.
- Such furniture drives are well known and can be used for example for adjusting adjustable parts of slatted frames, hospital beds, armchairs or tables.
- the known furniture drives can either be designed as a so-called single drive, which has a single drive unit, which is in operative position in the mounting position of the furniture drive with a part to be adjusted of the furniture.
- the known furniture drives can also be designed as so-called double drives, which have two drive units, of which in the assembly position of the furniture drive is in operative connection with a part of the furniture to be adjusted. If such a double drive used, for example, for adjusting a slatted frame, so for example, one of the drive units with an adjustable headboard and the other drive unit with an adjustable footboard of the slatted base are in operative connection.
- Electromotive furniture drives of the type in question which have a linearly movable output element along a linear movement axis, which is connected to an electric motor in drive connection. fertilizer stands.
- the output element may be formed in particular by a spindle nut which is arranged against rotation and movable in the axial direction on a rotatably driven threaded spindle.
- the invention is based on the problem of specifying an electromotive furniture drive of the type in question, which is relatively simple in construction and thus relatively inexpensive to produce. This problem is solved by the invention defined in claim 1.
- the invention provides a first mechanically actuable control switch, by means of which the electric motor can be controlled in such a way that the driven element moves along the linear movement axis in a first direction, and a second mechanically actuatable control switch, by means of which the electric motor can be controlled such that the driven element moves along the linear axis of movement in a second direction opposite to the first direction. Furthermore, the invention provides that the first and the second control switch can be actuated by mechanical actuation means.
- the furniture drive according to the invention is largely mechanically actuated, so that in particular costly and expensive to manufacture electrical or electronic Handbedieneinrich- lines, for example in the form of so-called hand switch, can be omitted.
- a manual control device of an electromotive furniture drive according to the invention operate largely mechanically.
- the furniture drive according to the invention is compared to known furniture drives simple in construction and thus inexpensive to produce. It can be designed as a so-called single drive with a single drive unit.
- the furniture drive according to the invention may also be designed as a double drive with two drive units, in which case each drive unit is associated with a pair of mechanically actuated control switches and a mechanical actuating means.
- the actuating means have a movable along a movement path actuator and that project by means of the actuating element mechanically actuated switching elements of the control switch in the movement path of the actuating element.
- the control switches are mechanically operated in a particularly simple manner.
- the actuator may be formed in any suitable manner according to the respective requirements.
- An advantageous development of the aforementioned embodiment provides that the actuating element is formed nok- kenartig.
- the actuator may move on any suitable trajectory, such as a circular path.
- a suitable trajectory such as a circular path.
- an advantageous development of the teaching according to the invention provides that the movement path of the actuating element is a linear trajectory.
- the inventively provided mechanical actuating means may be formed in any suitable manner.
- a particularly easy to produce and robust development of the teaching of the invention provides insofar as the actuating element is connected to a rope, band or chain-shaped traction means.
- the actuation of the control switch via the actuating element takes place by pulling on the traction means.
- the actuating element is in an initial position disengaged from the switching elements of the control switch.
- the switches are in the initial position unconfirmed, so that the electric motor is stopped in this initial position and thus an adjustment of a part of the furniture to be adjusted does not take place.
- actuating element is biased by spring means in the starting position.
- the actuating element is moved against the action of the spring means in an actuating position in which it mechanically actuates the control switches, wherein the actuating element automatically returns to the starting position under the action of the spring means.
- Another advantageous development of the teaching of the invention provides Endabschaltesch for switching off the electric motor in the end positions of the output element along the linear axis of motion. In the aforementioned embodiment, the
- Endabschaltesch basically be formed in any suitable manner.
- the Endabschaltesch may have limit switches that from the linearly movable output element in the range of End- were respectively actuated along the linear axis of motion.
- the Endabschaltesch be realized by monitoring the motor current of the electric motor. This is determined by a sharp increase in the motor current of the electric motor, that one of the end positions of the adjustment is achieved, so that the electric motor can be switched off.
- limit stop means mechanically disengage the control switch assigned to the respective end position from the actuating element.
- a particular advantage of this embodiment is that it is possible to dispense with limit switches as well as with a relatively complicated electrical or electronic circuit for monitoring the motor current.
- the furniture drive according to the invention is further simplified and thus designed even more cost-effective.
- this embodiment with only two switches, namely two control switches, a complete furniture drive can be built.
- switches are each movably mounted between a switching position in which the switching element protrudes into the movement path of the actuating element, and a Endabschalteposition in which their switching element is outside the movement path and under the action of the end shutdown means between the switching position and the
- Endabschalteposition are movable.
- the end stop of the electric motor takes place in that the respective switch is moved from the switching position to the Endabschalteposition.
- the Endabschaltesch one along the linear axis of movement of the driven element movably mounted and in the region of the end positions of the driven element entrainable slide, that the control switch biased by spring means abut each with a abutment projection on a contact surface of the slider and that the contact surface has at least one recessed area in the bearing direction, such that the respective control switch moves in the Endabschaltepo- position, if its contact element at Moving the slider reaches the recessed area.
- an advantageous development of the aforementioned embodiment provides that the slider in the region of its lying along the linear axis of movement of the driven element ends each have a driver has, on which the output element in the region of the respective end position of its movements comes to rest.
- the slider is taken in the region of the end positions of the output member, for example a spindle nut, and causes the end stop.
- Embodiment provides that the slider is biased by spring means in a starting position between its end positions. In this embodiment, it is ensured that the slider is always in its returns to the starting position.
- the spring means may basically be formed in any suitable manner.
- the slide is made of plastic and the spring means have at least one spring element formed integrally with the slide, preferably a tongue-like spring element a part of the housing of the furniture drive is supported.
- control switches In the embodiments in which the control switches are movably mounted, the control switches can be movable in any suitable manner, for example linearly movable.
- the control switches are each pivotally mounted about a pivot axis.
- the spring means may be configured in any suitable manner.
- the switch housing of the control switches each made of plastic and the spring means each having an integrally formed with the switch housing of the respective switch, preferably tongue-like spring element, the resiliently supported on a part of the housing of the furniture drive.
- FIG. 1 is a side view and a highly schematic diagram of an embodiment of an inventive furniture drive
- FIG. 2A-2G in the same representation as in Fig 1, but in comparison with FIG. 1 reduced scale the furniture drive according to FIG. 1 in different phases of the adjusting movement and
- FIG. 3A-3C in a similar representation as Fig. 1 shows a second embodiment of a furniture drive according to the invention.
- FIG. 1 and Figures 2A-2G are used only to illustrate the basic operation of the furniture drive 2 and are therefore kept purely schematic and hapskizzenhaft.
- the furniture drive 2 has a along a linear movement axis 4, which is symbolized in Fig. 1 by a dash-dotted line, in the direction of a double arrow 6 back and forth driven output element 8 on.
- the output element 8 is in drive connection with an electric motor not shown in the drawing and is reciprocable along the linear movement axis 4 under the action of the electric motor.
- the output element 8 may for example be formed by a spindle nut which is arranged against rotation and movable in the axial direction on a rotatably driven by the electric motor threaded spindle.
- the output element 8 can also be formed by a rotationally mounted and movable in its axial direction threaded spindle, on which a stationary, rotatably driven spindle nut is arranged.
- a first mechanically actuable control switch 10 is provided, by which the electric motor can be controlled in such a way that the output element 8 moves along the linear movement axis 4 in FIG. 1 to the left.
- the first control switch 10 is pivotally mounted about a pivoting axis 12 extending into the plane of the drawing in a housing of the furniture drive 2 (not shown) and has a mechanically actuable switching element 14. If the switching element 14 is pressed upward in FIG. 1, then the first control switch 10 controls the electric motor in such a way that the output element 8 in FIG. 1 moves to the left.
- the first control switch 10 is connected via corresponding lines to a power supply on the one hand and to the electric motor on the other hand.
- mechanical actuating means are provided according to the invention, which in this embodiment has a cam-like actuating element 20 movably mounted in the direction of a double arrow 16, which is connected in a tension-resistant manner to a traction means 22 which is cable-tight in this embodiment.
- the first control switch 10 is about the pivot axis 12 between a switching position shown in Fig. 1, in which its switching element 14 in the
- Movement path of the movement element 20 protrudes, and a further explained below Endabschalteposition in which its switching element 14 is located outside the path of movement, pivotally mounted.
- the first control switch 10 is movable under the action of a slider 24 between the shift position and the Endabschalteposition.
- the slide 24 is movably mounted in the housing of the furniture drive 2 along the linear movement axis 4 and in the area of the end positions of the adjustment movement of the driven element 8 are each entrained.
- the slider 24 in the region of its ends nose-like carrier 26, 28.
- the first control switch 10 is biased by spring means with a ganvorSprung 30 on a contact surface 32 of the slider 24 at.
- the spring means which bias the abutment projection 30 against the abutment surface 32, are formed in this embodiment by a tongue-like spring element 36 which is formed integrally with a switch housing 34 made of plastic of the first control switch 10 and bears against a web 38 of the housing of the furniture - supports drive 2.
- the slider 24 is remote from its ends a recessed in the direction of investment area 40, whose function will be explained in more detail below.
- a second control switch 42 through which the electric motor is driven such that the output member 8 moves along the linear movement axis 4 in Fig. 1 to the right.
- the second control switch 42 is constructed as described for the first control switch 10, and its components are provided with reference numerals corresponding to the reference numerals of the components of the first control switch 10.
- the slide 24 in this exemplary embodiment is made of plastic and is biased by spring means into a starting position shown in FIG. 1 between its end positions, wherein these spring means 44 in the illustrated embodiment are integrally formed with the slide 24, tongue-like spring elements 44, 46 are formed, which are supported on webs 48, 50 which are arranged in the housing of the furniture drive 2.
- actuating element 20 is shown in an initial position in which it is disengaged from the switching elements 14, 14 'of the control switch 10, 42. In this initial position, the actuating element 20 is biased by spring means.
- FIG. 2A represents the furniture drive 2 in the starting position already shown in FIG. 1, in which the output element 8 is located approximately centrally between the end positions of the adjustment movement.
- the traction means 22 is pulled in Fig. 2A to the right, so that the actuator 20 also moves in Fig 2A to the right and in this case the switching element 14 of the first control switch 10 located in the path of movement of the actuating element 20 is actuated, as shown in FIG. 2B.
- the slider 24 is centered by the spring elements 44, 46 in an approximately central position, the abutment projection 30 of the first control switch 10 abuts against the abutment surface 32 of the slider 24, so that the first control switch 10 at Actuate its Wennele- element 40 remains in the position shown in Fig. 2B, and not pivoted about the pivot axis 12. Due to the actuation of its switching element 14, the first control switch 10 controls the electric motor in such a way that the output element 8 moves to the left in the drawing, as can be seen from a comparison of FIGS. 2A and 2B.
- FIG. 2C illustrates a phase of the adjusting movement, in which the output element 8 reaches the region of its one end position of the adjusting movement.
- the output element 8 comes to the driver 26 to the system and takes in this case the slider 24 in Fig. 2C to the left. Due to the displacement of slide 24 in FIG. 2C to the left, the region 40 of contact surface 32 that springs back in the direction of engagement reaches the region of contact projection 30 of first control switch 10.
- the first control switch 10 pivots in this case, so that its switching element 14 is disengaged from the actuating element 20 and in this way the power supply to the electric motor is interrupted and the electric motor is stopped. In this way, an end stop of the electric motor is achieved in an end position of the adjustment via the slider 24 without additional limit switch by mechanical means.
- the actuating element 20 initially reaches the area of the switching element 14 of the first control switch 10. However, since the first control switch 10 is in the final shut-off position shown in FIG. 2C in which its switching element 14 is located outside the movement path of the actuating element 20, in this case the first control switch is not actuated, so that the electric motor is not put into operation.
- the actuating element 20 When the user pulls the traction means 22 further to the right, the actuating element 20 first reaches into the region of the switching element 14 'of the second control switch 42, as shown in FIG. 2D, and then presses the switching element 14' upwards, as shown in FIG. 2E shown. Due to the operation of its switching element 14 'controls the second control switch 42 to the electric motor such that the output member 8 moves in the drawing to the right, as shown in Fig. 2E. In this case, the slider 24 moves under the spring action of the spring elements 44, 46 back into the starting position shown in Fig. 2E. During this phase of the adjustment movement, the abutment projection 30 'of the second control tion switch 42 at the non-recessed portion of the abutment surface 32 of the slider 24, as shown in Fig. 2E.
- the output element 8 comes to rest on the driver 28 of the slide 24 and shifts the slide 24 to the right in the drawing.
- the abutment projection 30 'of the second control switch 42 passes into the area 40 of the abutment surface 32 which springs back in the direction of abutment.
- the second control switch 42 pivots under the action of the spring element 16', which attempts to pivot the second control switch 42 clockwise about the pivot axis 12 ' in this case in the Endabschaltepo- position shown in Fig. 2F.
- the extent of the recessed area 40 in the direction of displacement of the slide 24 is selected so that, in the end position of the adjusting movement of the positioning projection 30 of the first control switch 10 shown in FIG. 2F, it is outside the recessed area 40 that its switching element 14 projects into the path of movement of the actuating element 20.
- the driven element 8 is also adjustable between its end positions and thus a standing with the output element 8 in operative connection part of a piece of furniture between end positions of the adjusting movement.
- control switches 10, 42 in the end positions of the adjusting movement mechanically disengaged from the mechanical actuating means, which are formed by the actuator 20 and the traction means 22, are separate limit switches for a limit of the furniture drive 2 in the end positions of the adjustment not mandatory.
- the inventive furniture drive 2 is thus particularly simple and inexpensive to produce.
- the furniture drive 2 according to the invention is particularly robust.
- a second embodiment of a furniture drive 2 according to the invention is shown, in which the output element is formed by a rotationally and in its axial direction movably mounted threaded spindle 52 on which a stationary, rotatably driven spindle nut 54 is arranged.
- the outer surface of the spindle nut 54 is formed as a worm wheel and engages with a worm 56 integrally formed on the output shaft of an electric motor not recognizable in FIG. 3A.
- a holding part 58 is connected to the hinged and pivotable about a pivot axis 60, a hook portion 62 is connected, the hook end 64 is hooked to a pin 66 of a pivot lever 68 which rotatably connected to a pivot shaft 70th connected is.
- the pivot shaft 70 may be, for example to act a wave of a fitting of a slatted frame.
- the manner in which, for example, foot and headrest parts of a slatted base are adjusted by means of such pivoting shafts is generally known to the person skilled in the art and will therefore not be explained in any more detail here.
- the exemplary embodiment according to FIG. 3A first differs from the exemplary embodiment according to FIG. 1 in that the slide 24 is biased by coil springs 72, 74 into its centered starting position.
- control switches 10, 42 biased by leaf springs 76, 78 against the contact surface 32.
- two areas 80, 82 that are recessed in the direction of engagement are provided instead of the area recessed in the direction of engagement, between which a region 84 projecting in the direction of displacement of the slider 24 is located.
- Fig. 3A instead of a cam-like actuating element 20, two cam-like actuators 86, 88 are provided.
- Fig. 3A shows a first end position of the adjusting movement, in which the threaded spindle 52 in its in the Drawing extremely left-hand adjustment is located.
- Fig. 3B shows an adjustment position in which the threaded spindle 52 has moved to the right in Fig. 3A, while Fig. 3C illustrates the other end position of the adjusting movement, in which the threaded spindle 52 is in its extreme right position.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112008001435T DE112008001435A5 (en) | 2007-06-28 | 2008-03-04 | Electromotive furniture drive |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007029848.1 | 2007-06-28 | ||
DE102007029848 | 2007-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009000349A1 true WO2009000349A1 (en) | 2008-12-31 |
Family
ID=39494929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/001699 WO2009000349A1 (en) | 2007-06-28 | 2008-03-04 | Electromotive furniture drive |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112008001435A5 (en) |
WO (1) | WO2009000349A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003055359A1 (en) * | 2002-01-04 | 2003-07-10 | Linak A/S | Furniture drive for adjusting parts of an item of furniture in relation to each other |
WO2003055356A1 (en) * | 2002-01-04 | 2003-07-10 | Linak A/S | Electromotive furniture drive for displacing parts of a piece of furniture in relation to each other |
WO2005122840A1 (en) * | 2004-06-21 | 2005-12-29 | Linak A/S | A linear actuator for beds, slatted beds or chairs |
-
2008
- 2008-03-04 WO PCT/EP2008/001699 patent/WO2009000349A1/en active Application Filing
- 2008-03-04 DE DE112008001435T patent/DE112008001435A5/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003055359A1 (en) * | 2002-01-04 | 2003-07-10 | Linak A/S | Furniture drive for adjusting parts of an item of furniture in relation to each other |
WO2003055356A1 (en) * | 2002-01-04 | 2003-07-10 | Linak A/S | Electromotive furniture drive for displacing parts of a piece of furniture in relation to each other |
WO2005122840A1 (en) * | 2004-06-21 | 2005-12-29 | Linak A/S | A linear actuator for beds, slatted beds or chairs |
Also Published As
Publication number | Publication date |
---|---|
DE112008001435A5 (en) | 2010-11-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1318737B1 (en) | Furniture drive embodied as a double drive | |
DE102006007600B4 (en) | Turntable for electric or electronic bone in a motor vehicle | |
DE3111633A1 (en) | ACTUATOR, IN PARTICULAR COMBINED WINDOW LIFTING AND CENTRAL DOOR LOCKING SYSTEM IN MOTOR VEHICLES | |
DE102008018500A1 (en) | Motor vehicle lock for use with controlling drive, has locking element of bolt, catch, and lock mechanism that is moved into different functional states, for e.g. unlocked, locked, anti-theft locked or child locked | |
EP3336292B1 (en) | Method for actuating a door lock and door lock | |
DE102009017895A1 (en) | Electromotive adjustable support device | |
DE10200169A1 (en) | Furniture drive for adjusting parts of a piece of furniture relative to one another | |
DE102015214301A1 (en) | Furniture and adjusting arrangement, in particular for a backrest adjustment | |
EP1416832B1 (en) | Drive for furniture for displacing parts of furniture in relation to one another | |
WO2006074763A9 (en) | Piece of furniture in particular a seat | |
WO2009000349A1 (en) | Electromotive furniture drive | |
DE102019209809A1 (en) | Device for realizing a stop position and electromechanical device | |
WO2005082310A1 (en) | Massage carriage | |
WO2009000352A2 (en) | Electromotive furniture drive | |
DE2534179A1 (en) | SWITCH DEVICE FOR LIMITING POSITIONS | |
WO2009000351A2 (en) | Electromotive furniture drive | |
DE102004016050B4 (en) | Electromotive furniture drive for adjusting parts of a furniture relative to each other | |
DE202021105091U1 (en) | Built-in hand switch | |
DE102013227004B4 (en) | Electric circuit breaker | |
WO2002102205A1 (en) | Electromotive furniture drive | |
EP0707326B1 (en) | A motor driven mechanical change-over device for operating an electrical switch | |
DE10200168A1 (en) | Electromotive furniture drive for adjusting parts of a piece of furniture relative to one another | |
EP1800567B1 (en) | Electromotive linear drive | |
EP2146867B1 (en) | Actuating device, particularly for a vehicle seat | |
DE102010035555A1 (en) | Electromotive rotary actuator, especially for flaps, for example on furniture |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08716218 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120080014353 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08716218 Country of ref document: EP Kind code of ref document: A1 |
|
REF | Corresponds to |
Ref document number: 112008001435 Country of ref document: DE Date of ref document: 20101104 Kind code of ref document: P |