WO1997029725A1 - Power chair for use as a standing aid - Google Patents
Power chair for use as a standing aid Download PDFInfo
- Publication number
- WO1997029725A1 WO1997029725A1 PCT/FR1997/000191 FR9700191W WO9729725A1 WO 1997029725 A1 WO1997029725 A1 WO 1997029725A1 FR 9700191 W FR9700191 W FR 9700191W WO 9729725 A1 WO9729725 A1 WO 9729725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- coupling members
- base
- chair
- chair according
- Prior art date
Links
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 present invention relates to a powered lift chair providing assistance in lifting people.
- the invention relates more particularly to a motorized lift chair of the type comprising a frame forming a base, a mechanism for raising and lowering a mobile seat moving from the rear to the front of the chair when it passes from a low position.
- the movable seat consisting of at least two elements affecting in profile the shape of a square with variable geometry, the first element of the seat, serving to support the buttocks, being at one end secured or articulated to the back of the chair and, at its opposite end, connected to the second element of the seat by means of a connection, such as a hinged connection, said first and second elements of the seat being hinged together so that, during the lifting of the seat, the second element of the seat swings down around the hinge while the first element maintains by a permanent and stable gluteal support the person ne until the practically upright position, while during the descent of the seat, the second element of the seat is forced to rise gradually to come, in the low position of the seat, to reconstitute the seat.
- Such a lift chair is described in particular in patent FR-A-2,712,802.
- This type of chair allows the person in particular not to be injured during the movement between the two extreme positions of the seat, to have their legs released when they must stand after the lift of the chair and s '' install in stable support at the bottom of the seat before starting the descent while being kept well seated during the ascent and descent.
- the lifting and lowering devices provided on these chairs have been relatively complex up to now and therefore expensive. They required in particular the presence of a pulley, slides and a jack, the pulley, constituting a reduction system, certainly allowing the doubling of the stroke of the jack but obliging to use a jack of high power generating a cost more high installation.
- the object of the present invention is to provide a motorized lifting assistance chair which overcomes these drawbacks by means of a raising and lowering device which, associated with a frame of original design, allows reliable, safe, simple and inexpensive operation. said chair while offering a large choice of settings for the different positions of this chair.
- Another object of the present invention is to provide an armchair whose so-called comfort adjustment is only accompanied by a very small elevation of the seat so as not to modify the habits of the user.
- the subject of the invention is a motorized lifting chair of the type mentioned in the introduction, characterized in that the frame of said chair consists of a base equipped with feet, a frame connected by first members of coupling, such as connecting rods, to the first element of the seat and by second coupling members to the base, said coupling members each being movable between two extreme positions under the action of the raising and lowering mechanism , said first coupling members essentially ensuring, during their movement, a so-called adjustment of comfort of the seat by relative displacement of the elements of the seat and possibly of the backrest and / or of a calf rest, said second coupling members essentially ensuring the movement of the seat from a low position to a high position and vice versa so as to provide the user, the elderly, disabled or others with ace sistance to switch from sitting to standing position and vice versa. Thanks to this design of this intermediate chassis, an adjustment of comfort and assistance in lifting is obtained by actuating the coupling members.
- the first and second coupling members are moved alternately, the second coupling members can only be moved when the first coupling members occupy an extreme position and vice versa.
- FIGS. 1 to 4 represent schematic side views of a chair according to the invention when it passes from a low position to a high position and
- Figure 5 shows a perspective side view of a chair according to the invention.
- the motorized lift chair comprises a frame 1 forming a base and a mechanism for raising and lowering a seat 3A, 3B moving from the rear towards the front of the chair during its passage from a low position to a high position.
- the mobile seat is made up of at least two elements 3A, 3B having a profile in the form of a square with variable geometry.
- the first element 3A of the seat is, at one end, secured or articulated to the backrest 4 of the chair and, at its opposite end, connected to the second element 3B of the seat by means of a hinged connection 14.
- Said element 3A of the seat is movable substantially parallel to itself during its movement.
- Said first and second elements 3A, 3B of the seat are hinged together so that, during the lifting of the seat, the second element 3B of the seat swings down around the hinge 14 while the first element 3A maintains the person by a permanent and stable gluteal support up to the practically upright position.
- the second element 3B of the seat is forced to rise gradually to come, in the low position, to reconstitute the seat.
- the frame 1 of the chair is itself made up of a base 2 fitted with feet 15.
- This base 2 generally takes the form of a frame.
- This frame further comprises a chassis 6 connected by first coupling members 8, such as connecting rods, to the first element 3A of the seat and by second coupling members 9 to the base 2.
- first coupling members 8 and 9 are each movable between two extreme positions under the action of the up and down mechanism.
- the first coupling members 8 essentially provide, during their movement, a so-called seat comfort adjustment by relative displacement of the elements 3A, 3B of the seat and possibly of the backrest 4 and / or of a rest calves 5, while the second coupling members 9 essentially move the seat from a low position to a high position and vice versa to provide assistance in lifting people.
- These bodies 8 and 9 for coupling the chassis 6, on the one hand to the first element 3A of the seat, and on the other hand to the base 2, are inclined transversely between a low point before the chair and a high point at the rear. of the chair to form a quadrilateral, preferably a parallelogram, deformable by actuation of the raising and lowering mechanism. Consequently, the coupling members 8 and 9 deploy from the rear to the front of the chair during lifting the seat. At least one pair of each type of coupling member is arranged on each side of the chair.
- these first and second coupling members 8, 9 are preferably moved alternately, that is to say in turn, the second coupling members 9 can only be moved when the first coupling members 8 occupy an extreme position and vice versa.
- the first coupling members 8 constituted by connecting rods begin to move when the actuation of the device rises and falls to an extreme position corresponding to that shown in FIG. 2.
- the second coupling members 9 also constituted by connecting rods can begin to move to occupy positions conforming first to Figure 3 and then secondly to Figure 4.
- the extreme position or close to the extreme position of these second coupling members 9 therefore corresponds to a position in which the person is in a standing position.
- the reverse passage from the high position of the seat to the low position will be carried out in the same way by first moving the second coupling members 9 corresponding to the lowering of the latter then by lowering the first members of '' coupling 8.
- the up and down mechanism consists of a jack 13, preferably double acting electric, one end of which is articulated at a stationary point on the base 2 and the other end of which is articulated on the first element 3A of the seat or any element integral in displacement with the first element of the seat, for example one of the first coupling members 8.
- this jack 13 is associated with a thrust member, such as a jack gas 16, which connects the seat and the chassis 6 to help move the first coupling members 8 and constitute an end-of-travel device when the seat is in position d 1 maximum spacing of the chassis 6.
- This pushing member makes it possible to obtain an alternative displacement of the first and second coupling members 8 and 9.
- This pushing member can also be replaced by a double pawl system making it possible, during lifting, to hold the base 2 and the chassis 6 integral until the complete deployment of the coupling members 8. Then, the pawl is mechanically tilted in order to release the base 2 and the chassis 6 while maintaining the coupling members 8 in position, to allow the lifting movement of the seat by deployment of the coupling members 9. Conversely, during the descent, this double pawl keeps the coupling members 8 in the maximum deployed position, until the coupling members 9 are fully folded, the pawl is then tilted to secure the base 2 and the chassis 6 and release the coupling members 8 so as to complete the downward movement. In the absence of one or the other of the mechanisms, correct positioning and perfect adjustment of the elements of the chair would then become impossible.
- this thrust member can be replaced by a member working in traction.
- this member will be disposed between the chassis 6 and the base 2. It will then have the function not to facilitate the movement of the first coupling members 8 but, on the contrary, to go against the operation in the direction of deployment of the second coupling members 9.
- the so-called comfort adjustment of the chair which is generally carried out when the chair occupies a low position, that is to say when the second coupling members 9 occupy a position substantially parallel to the frame of the base 2, comprises the displacement of the elements 3A and 3B of the seat on the one hand and possibly, on the other hand, the relative positioning of the backrest 4 and the calf rest 5.
- the relative positioning of the backrest 4 and the calf rest 5 can be '' use independent motors.
- such a device can only be envisaged for relatively expensive armchairs. It is therefore necessary to provide armchair designs in which there is only one raising and lowering device consisting of a single cylinder without additional motor.
- the backrest 4 is connected by a connecting rod 11 to the first coupling member 8 connecting the first element 3A of the seat and the chassis 6.
- This connecting rod 11 allows the so-called comfort adjustment of the backrest relative to the first element 3A of the seat.
- the calf rest 5 is connected on the one hand to the second element 3B of the seat by means of a connection, such as a hinged connection, on the other hand to the base 2 by a connecting member 12 fixedly mounted on the calf rest 5 and pivotally articulated on the base 2.
- This mounting of the calf rest allows on the one hand to retract the calf rest when the seat moves from a low position at a high position, on the other hand to authorize a comfort adjustment by positioning the calf rest substantially in the extension of the second element 3B of the seat when the seat occupies a low position so as to allow the user to occupy a substantially lying position.
- This adjustment is therefore carried out in a simple manner without requiring the presence of additional motors.
- the second element 3B of the seat maintained directly or indirectly in generally sliding contact with the rest of the chair is automatically positioned by the displacement of the first element 3A of the seat due to the hinged connection between the first and second elements of the seat.
- the armchair to include armrests 7 substantially affecting the shape of a handle secured to the base 2 or to the chassis 6, the free ends of said handle forming a base possibly being fitted with rollers 10.
- the armrests 7 can have a large number of shapes.
- these armrests 7 can be formed in one piece with the chassis 6 and can be interconnected by means of a cross member. They can also be attached to the chassis 6 and removably mounted on the latter.
- the dressing of the chair can be carried out at the user's choice.
- the chair has a structure which is always substantially identical from one chair to another, the user subsequently choosing the covering.
Landscapes
- 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)
- Chairs Characterized By Structure (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97902415A EP0880348A1 (en) | 1996-02-15 | 1997-01-31 | Power chair for use as a standing aid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR96/01880 | 1996-02-15 | ||
FR9601880A FR2744910B1 (en) | 1996-02-15 | 1996-02-15 | MOTORIZED LIFT ARMCHAIR |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997029725A1 true WO1997029725A1 (en) | 1997-08-21 |
Family
ID=9489232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/000191 WO1997029725A1 (en) | 1996-02-15 | 1997-01-31 | Power chair for use as a standing aid |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0880348A1 (en) |
CA (1) | CA2245907A1 (en) |
FR (1) | FR2744910B1 (en) |
WO (1) | WO1997029725A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6175973B1 (en) | 1998-07-31 | 2001-01-23 | Hill-Rom, Inc. | Stand assist lift |
WO2009009913A1 (en) * | 2007-07-13 | 2009-01-22 | Levo Ag Wohlen | Stand-up unit for stand-up wheelchairs and chairs, particularly therapy chairs |
US9375372B2 (en) | 2010-04-27 | 2016-06-28 | Levo Ag Wohlen | Stand-up unit for stand-up wheelchairs and chairs, particularly therapy chairs |
US9775753B2 (en) | 2013-05-17 | 2017-10-03 | Dane Technologies, Inc. | Methods, systems, and devices relating to multifunctional aircraft aisle wheelchair |
CN110290729A (en) * | 2016-12-12 | 2019-09-27 | 厄特拉-梅克公司 | Power-assisted with split type seat is lain partial formula chair lift |
US11241094B2 (en) | 2017-01-26 | 2022-02-08 | Ultra-Mek, Inc. | Reclining high-leg seating unit |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1066776A1 (en) * | 1999-07-08 | 2001-01-10 | Pascal Berger | Adjustable chair |
CN112545780B (en) * | 2020-12-10 | 2022-11-22 | 四川大学华西医院 | Back support auxiliary standing device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5203610A (en) * | 1990-11-14 | 1993-04-20 | Invacare Corporation | Reclining lift chair having wheels for transport |
FR2712802A1 (en) * | 1993-11-25 | 1995-06-02 | Pellevoisin Roland | Chair for handicapped or infirm with motorised assistance for standing and sitting |
-
1996
- 1996-02-15 FR FR9601880A patent/FR2744910B1/en not_active Expired - Fee Related
-
1997
- 1997-01-31 EP EP97902415A patent/EP0880348A1/en not_active Withdrawn
- 1997-01-31 WO PCT/FR1997/000191 patent/WO1997029725A1/en not_active Application Discontinuation
- 1997-01-31 CA CA 2245907 patent/CA2245907A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5203610A (en) * | 1990-11-14 | 1993-04-20 | Invacare Corporation | Reclining lift chair having wheels for transport |
FR2712802A1 (en) * | 1993-11-25 | 1995-06-02 | Pellevoisin Roland | Chair for handicapped or infirm with motorised assistance for standing and sitting |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6175973B1 (en) | 1998-07-31 | 2001-01-23 | Hill-Rom, Inc. | Stand assist lift |
WO2009009913A1 (en) * | 2007-07-13 | 2009-01-22 | Levo Ag Wohlen | Stand-up unit for stand-up wheelchairs and chairs, particularly therapy chairs |
US8403352B2 (en) | 2007-07-13 | 2013-03-26 | Levo Ag Wohlen | Stand-up unit for stand-up wheelchairs and chairs, particularly therapy chairs |
US9375372B2 (en) | 2010-04-27 | 2016-06-28 | Levo Ag Wohlen | Stand-up unit for stand-up wheelchairs and chairs, particularly therapy chairs |
US9775753B2 (en) | 2013-05-17 | 2017-10-03 | Dane Technologies, Inc. | Methods, systems, and devices relating to multifunctional aircraft aisle wheelchair |
CN110290729A (en) * | 2016-12-12 | 2019-09-27 | 厄特拉-梅克公司 | Power-assisted with split type seat is lain partial formula chair lift |
EP3537930A4 (en) * | 2016-12-12 | 2020-07-22 | Ultra-mek, Inc. | Power-assisted reclining lift chair with split seat |
CN110290729B (en) * | 2016-12-12 | 2023-09-12 | 厄特拉-梅克公司 | Power-assisted reclining lifting chair with split type seat |
US11241094B2 (en) | 2017-01-26 | 2022-02-08 | Ultra-Mek, Inc. | Reclining high-leg seating unit |
Also Published As
Publication number | Publication date |
---|---|
FR2744910A1 (en) | 1997-08-22 |
FR2744910B1 (en) | 1998-05-22 |
EP0880348A1 (en) | 1998-12-02 |
CA2245907A1 (en) | 1997-08-21 |
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