EP1712215A1 - Sitzmöbelmechanismus zur Unterstützung beim Aufstehen - Google Patents

Sitzmöbelmechanismus zur Unterstützung beim Aufstehen Download PDF

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Publication number
EP1712215A1
EP1712215A1 EP05008248A EP05008248A EP1712215A1 EP 1712215 A1 EP1712215 A1 EP 1712215A1 EP 05008248 A EP05008248 A EP 05008248A EP 05008248 A EP05008248 A EP 05008248A EP 1712215 A1 EP1712215 A1 EP 1712215A1
Authority
EP
European Patent Office
Prior art keywords
seating furniture
lifting
seat
rotating
getting
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.)
Withdrawn
Application number
EP05008248A
Other languages
English (en)
French (fr)
Inventor
Mladen Curdija
Slavko Dusak
Ivan Golubic
Ines Dr. Marko
Drago Svetec
Ivan Storga
Alexander Hajdu
Karl-Juergen Sauter
Richard Weinzierl
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.)
Hettich Franke GmbH and Co KG
Opruga dd
Original Assignee
Hettich Franke GmbH and Co KG
Opruga dd
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 Hettich Franke GmbH and Co KG, Opruga dd filed Critical Hettich Franke GmbH and Co KG
Priority to EP05008248A priority Critical patent/EP1712215A1/de
Publication of EP1712215A1 publication Critical patent/EP1712215A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/14—Standing-up or sitting-down aids

Definitions

  • the subject of this invention is a mechanism which enables continuous, synchronized, and further independent of other functions of the furniture achieving position by an user appropriate for getting out of seating furniture by means of kinematically adapted lever mechanism.
  • the invention is particularly suitable for rotating driving devices as opposed to linear driving devices as known in state of the art.
  • the subject of this invention belongs to classification comprising chairs; resting chairs; with adjustable seat and back support; with support for legs or feet, in combination with movable seat and back support.
  • the lever mechanisms which are used in manufacturing of adjustable seats (also known as recliners) which can be used for resting or relaxation are kinematically speaking very complex mechanisms used in furniture manufacturing.
  • the complexity is derived from requirements of designing mechanism which can be fitted in very close space, further need for achieving complex functions, high performances, synchronized operation of said driving device, and carrying of high specific loads and stresses in the material.
  • both precision of manufacturing, and low wear (high number of working cycles) is required.
  • This invention deals with mechanism which is adapted for use of rotating driving mechanism for driving of sad lever mechanism, as well as with adaptation of said mechanism to rotating driving devices attachment.
  • conventional driving devices such as linear driving mechanism
  • Mechanism for lifting of seating furniture to assist getting up, with own driving mechanism with help of rotating motor drives presents solution with original kinematic mechanism and enables drive and appropriate kinematic achievement, and with help of rotating motor drives achieves optimum functioning of seating furniture during use of this function of lifting furniture to assist with getting up, and with that improves total possibilities of functions of a seat.
  • the verb getting up or getting out as used in this application refers to both getting out of seating furniture, and getting on or getting in said seating furniture, i.e. assisted occupation, and vacation of said seating furniture.
  • the word chair is used liberally for any seating furniture which can be used in connection of invention described herein.
  • said seating furniture can also refer to beds as this invention can be used for lifting of beds as well.
  • the invention is used by users who need assistance as they may have problems with lowering their body into seating furniture, and so far required assistance of others to lower themselves into seating furniture.
  • This invention provides for self sufficient use, or safer use, of seating furniture by lifting furniture rather than lowerin the body of the user into usual seating furniture height (or beds for that matter).
  • the mechanism is designed in such a fashion to facilitiate implementation of rotating (for purposes of this application known also as revolving) driving devices, with possibility to connect rotating and stationary part of the driving device in same axis of rotation, said axis also compatible with exit axle of rotating of mechanism for lifting.
  • This axle of driving mechanism is moved together with kinematic movements of exit axis of rotating mechanism for lifting. This facilitates the limiting performances of mechanism which enables complete achievements of required functions of lifting while assisting getting up at seating furniture, comfort of work and use, durability, and other characteristics and improvements.
  • the driving devices used should be as small as possible (minimum volume).
  • lever mechanism rotating driving lever device which is completed in pair, at the same time interconnected, and synchronized.
  • lever mechanism is designed to enable very simple and fast mounting onto the construction of seating furniture, or its mechanisms, by inserting additional axes, and interconnected by means of screws.
  • Rotation of the driving device lifts the frame of the chair, or frames of other mechanisms within the seat and consequently moves parts of the chair upward, or slants toward front in desired positions for easier getting up, in such a fashion that in every position seat of said chair is stable, and pivots make interconnected quadrangles which enable various positions of seat support, and consequently seat itself.
  • the base of the mechanism is a frame on wheels, stable legs, or supports (lean-ons), on which two attachment elements are attached, these two attachment elements forming a base for kinematic mechanism, to which pivots and supports of other parts of mechanism are attached.
  • the rotating drive device requires special, different, and specific positioning and kinematic mechanism of levers and main attachment points of said drive device.
  • this kinematic mechanism is an essence of this invention.
  • Mechanism for lifting of seating furniture to assist getting up, with own mechanism drive with help of rotating motor drives comprises of parts which are designed as kinematic mechanism two synchronized shear mechanisms which drive chair (recliner) or other form of furniture meant for seating or laying in positions, suitable for assisted getting up.
  • This new kinematic mechanism is different from those mechanisms known in the art as it combines rotating motor drives with synchronized shear mechanisms as opposed to linear motor drives as known in state of the art. It is this function, and combination, which delinates this mechanism from all others.
  • the solution is not obvious as the strength of rotating motor drives is rather limited.
  • the motor drives are operated within limited space. All of these limitations result in designing process in which the new solution must be well balanced as well thought-through to enable desired result which is stable position of the seat in any and all positions, and obtaining of required height as well as angle of the seat to enable safe and comfortable getting up from the chair (or other form of furniture) which is subjected to the new lifting device.
  • Figures 1 and 2 show total mechanism with kinematic mechanism of levers, positions for attachment of rotating drives, and means of connecting and transfer of movements onto supports (23, 25) of a seat of said seating furniture. These supports are merely illustrative, and are simply input to describe any type of seating furniture which can be lifted with this invention, such seating furniture usually found in so called relax, or foldable mechanisms.
  • Figure 1 is side view of this invention in lowered position which is position used by the user during resting, or seating in seating furniture.
  • Figure 2 is side view of this invention in its lifted position, said position used for getting out of seating furniture.
  • the mechanism comprises of base (1), which can be equipped with wheels (11), or stable supports (12), or combination of these elements.
  • This base (1) is comprised, preferably bent, from single beam or tube, which is then fixed (stabilized) with cross bar (2).
  • On this base (1) at least two main attachment elements (3) are attached, in this embodiment welded.
  • lifting levers (5, 6) are attached by means of pivot (18), said lifting levers (5, 6) used for lifting and rotating of main L-shaped supports (4) by means of pivots (13, 14).
  • Said lifting levers (5, 6) are designed kinematicaly in such a fashion that the position of the seat of said seating furniture which is attached onto this invention via supports (23, 24) remains stable and controlled at all times during operation.
  • wheels (11) can be separate, they can also be at the same time wheels of said seating furniture as they are not lifted from the ground.
  • Base (1) can be equipped with either four wheels or four fixed supports, or combination of these elements, all of which can serve as legs of said chair thus eliminating need for separate chair legs.
  • main attachment elements (3) are forked and welded to base (1), embracing tube of base (1) from inside and outside therefore forming stable base for lifting levers (5, 6) of lifting mechanism.
  • supporting element of driving device (7) preferably triangular with rectangular attachment for rotating driving device (16), onto which appropriate attachment of exit axle of rotating driving device is built (the rotating drive device is not shown in Figures, however, such rotating drive device in known in state of the art, preferably it is an electro motor).
  • Supporting element (7), and rectangular attachment of rotating driving device (16) are lifted with lever (6), and consequently axis of driving device (22) is lifted therefore vacating room for movements of stator part of the driving device around axis (22).
  • the rotating device is also lifted while remaining in same line (axis), and consequently vacates room below the chair which is both aesthetically pleasing and safety appropriate.
  • the rotating driving device by means of flange (9) which is attached to the stator part of the rotating driving device, and attachment (15) during rotating of stator and flange (9) pulls pulling lever (8) which in turn by means of pivot (13) lifts and rotates main L-support (4) onto which the seat is attached. In such a fashion, the lifting of seat and resulting assistance of getting up is achieved.
  • Various final positions of lifting of said seat can be achieved by combining different kinematic elements defining spaces between points of shear lever mechanism, or combinations of lengths and forms of levers in said shear mechanism.
  • a transverse transferring mechanism of rotating drive device for transferring of rotation onto other side of mechanism in axis (22) on other flange (19), said flange (19) ensuring parallel movements on the other side of mechanism by means of pivot, symmetrical to pivot (15) and the other lever (8), this parallel movement ensuring level, safe, and stable lifting of whole seat and consequently helps in assisting user to get up.
  • This set-up, attachment, and movement of rotating drive device, as well as transfer of that movement onto other part of kinematic mechanism provides for original solution in the area of mechanisms for lifting of chairs in order to assist users with getting up.
  • Mechanism for lifting of seating furniture to assist getting up, with help of rotating drive devices is self propelled mechanism which is independent of other mechanisms within said furniture thereby enabling lifting independent of all other standard functions of a chair such as extending of feet support or adjustment of back support which remain unhindered. Further, as there is no pre-set height of either starting or ending of operation, proposed unit is very flexible, and at the same time enables lifting of chairs with no pre-set or pre-built mechanisms for movements.
  • the main L-shaped support (4) is designed to enable fast and efficient assembly of support, and thereby the mechanism, onto the parts of the frame, or other mechanisms. This is possible by bending of rear portion of main support (4) in vertical axis, and attaching a pin (17) onto it, said pin (17) simply inserted into part of chair or other mechanism frame (25), and fixed with fixing means, such as screws (24). This provides for short assembly time, further provides for securing said joint in two directions while maintaining safety, said joint being safer than customary way of attaching.
  • Said chair is stable in every position as pivots of shear levers comprise connected quadrangle which enables various always stable positions of main L-support (4), and therefore whole chair, so the user feels safe operation of lifting, lowering, and slanting of said seat in order to assist his or her getting up.
  • sliding sleeves in joints and pivots one avoids uneven movements, staggering movements, hitting of parts of shear mechanism, free play of parts of the frame and similar difficulties so the system performs silently and continuously.
  • the final lower position is limited by lowering of said mechanism to base (1) itself, which by itself limits further unwanted or spurious moving.
  • upper limiting position is mechanically limited by achieving final points of movements of shear mechanism, i.e. by contacting levers (5) and (6) (or folding lever (6) onto lever (5)), or folding of lever (8) onto the rectangular attachment of rotating driving device (16).
  • the movements of the mechanism is safe within pre-set limits, and extended motion is impossible, said extended motion posing potential harm to the user.
  • limiting clutches of rotating drive device as well as fuses built into to prevent electrical overload, or other safety solutions, three fold protection against moving outside pre-set boundaries is achieved in order to prevent possible hazards to the user.
  • kinematic mechanism for lifting of seating furniture to assist with getting up said mechanism self propelled by means of rotating driving devices, and its design provides for independent, separate, partial, or within full range operation of various functions, from any position, in various sequences, and synchronized. Actual way of operation depends on input by user as well as electronic regulation of rotation driving device.
  • This invention is novel, and unobvious, these characteristics emanating from description and embodiment of this invention, i.e. novel efficient functional mechanism for lifting of seating furniture to assist with getting up, this mechanism self propelled by means of rotating driving device as well as from actual design of embodiment which provides for independent, separate, partial, or within full range operation of various functions, from any position, in various sequences, and synchronized.
  • inventive steps as emphasized in this section are not limiting the scope of this invention, they are presented in a way of example.
  • the mechanism as described in this application provides for application, attachment of at least one rotating drive device, and, according to Figures 1, 2, and 3 transfer of rotation of said rotating drive device by means of levers with special, and in this application described, kinematic mechanism. Further, the mechanism translates rotating movement of said rotating driving device via appropriate lever mechanism to movements of said seat of said seating furniture in upward (lifting) and downward (lowering) motion, and further of slanting said seat of said furniture forward, all to facilitate easier getting up from, and getting into seating furniture. Said mechanism is controlled with appropriate system for control.
  • Said mechanism is driven by rotating driving device which may work with other mechanism (e.g. with chair mechanism) either independently, or synchronized, and enables control of movements of said seat, as well as comfortable use of said seat, easy getting up while simultaneously enables functioning of all other mechanisms needed for operation of said chair, and not covered with this invention.
  • other mechanism e.g. with chair mechanism
  • Inventive step is also seen in shear mechanism shown in Figures 1, 2, and 3, said shear mechanism enabling attachment of rotating drive mechanism as opposed to customary linear drive mechanism, said rotating drive mechanism attached to attachment of quadrangular shape (16) which by means of flange (9), pulling lever (8), pivots (13, 14), and main L-shaped support (4) transfers movements of said rotating driving device into upward or downward movements of said seat as well as slanting of said seat forward, all of these motions performed to assist said user to either get-up, or sit into said seating furniture.
  • One should especially note transverse position of rotating driving device, and its positioning onto lifting levers thereby achieving lifting of axis of whole driving device with lifting of said chair consequently clearing the bottom of said chair and enabling access to lower part of said chair during lifted mechanism.
  • inventive step is form and securing of main attachment element (3), and levers (5) and (6).
  • Said attachment element (3) in shape of the fork embraces the base's (1) frame from inner and outer side and thereby increases stability of whole mechanism, and releases it from necessity of having additional cross connections of levers.
  • inventive step of this invention is also in special position, movements, and trajectory of lever (8) which by means of attachment point (13) provides for motion of quadrangular shear mechanism in such a way that by means of lever (8) said main L-shaped support (4) and consequently said seat moves upward, slants forward, or moves downward into desired position.
  • inventive step of this invention is also in form of said base (1) which is manufactured on single tube (which of course may be welded or in some other way attached together from many shorter pieces), said tube bent in particular fashion shown in Figure 3, onto which all parts of mechanism are attached, either directly, or indirectly, including base (1) supports such as wheels (11), or stable supports (12). Said base (1) can be mounted into said chair.
  • the inventive step of this invention is also in having rotating drive device attached to attachment plate (16), said attachment plate (16) with said rotating drive device being lifted during lifting of said mechanism, thereby vacating place under said seating furniture while said seating furniture is in lifted position.
  • the drive device linear in state of the art
  • the drive device is attached to a base and not to lifting mechanism as opposed to this invention.
  • the inventive step of this invention is extremely simplified assembly of said mechanism onto the frame of said chair or other mechanism already built into said chair, in such a was that the whole mechanism by means of a pin (17) or plurality thereof is simply inserted into appropriate holes, and then secured by means of securing means, preferably screws (24) thereby simplifying the assembly and reducing time needed for assembly.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP05008248A 2005-04-15 2005-04-15 Sitzmöbelmechanismus zur Unterstützung beim Aufstehen Withdrawn EP1712215A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05008248A EP1712215A1 (de) 2005-04-15 2005-04-15 Sitzmöbelmechanismus zur Unterstützung beim Aufstehen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05008248A EP1712215A1 (de) 2005-04-15 2005-04-15 Sitzmöbelmechanismus zur Unterstützung beim Aufstehen

Publications (1)

Publication Number Publication Date
EP1712215A1 true EP1712215A1 (de) 2006-10-18

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ID=35033771

Family Applications (1)

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EP05008248A Withdrawn EP1712215A1 (de) 2005-04-15 2005-04-15 Sitzmöbelmechanismus zur Unterstützung beim Aufstehen

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343871A (en) * 1966-03-03 1967-09-26 George H Yates Automatically operated invalid chair
GB1276255A (en) * 1970-02-27 1972-06-01 Albert Ernest Powell Improvements relating to chairs or seats primarily for use by infirm or invalid persons
US5333931A (en) 1992-11-02 1994-08-02 The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration Portable seat lift
DE29519554U1 (de) * 1995-12-09 1996-01-25 Stanzwerk Wetter Sichelschmidt & Co, 58300 Wetter Sitzmöbel mit Aufstehhilfe
EP1252874A2 (de) * 2001-04-23 2002-10-30 Ferdinand Lusch Gmbh & Co. Kg. Durch einen Antrieb verstellbares Sitzmöbel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343871A (en) * 1966-03-03 1967-09-26 George H Yates Automatically operated invalid chair
GB1276255A (en) * 1970-02-27 1972-06-01 Albert Ernest Powell Improvements relating to chairs or seats primarily for use by infirm or invalid persons
US5333931A (en) 1992-11-02 1994-08-02 The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration Portable seat lift
DE29519554U1 (de) * 1995-12-09 1996-01-25 Stanzwerk Wetter Sichelschmidt & Co, 58300 Wetter Sitzmöbel mit Aufstehhilfe
EP1252874A2 (de) * 2001-04-23 2002-10-30 Ferdinand Lusch Gmbh & Co. Kg. Durch einen Antrieb verstellbares Sitzmöbel

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