EP3253257B1 - Lit à dureté réglable - Google Patents

Lit à dureté réglable Download PDF

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Publication number
EP3253257B1
EP3253257B1 EP16746910.5A EP16746910A EP3253257B1 EP 3253257 B1 EP3253257 B1 EP 3253257B1 EP 16746910 A EP16746910 A EP 16746910A EP 3253257 B1 EP3253257 B1 EP 3253257B1
Authority
EP
European Patent Office
Prior art keywords
base plate
secondary base
mattress
primary
lifting
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
EP16746910.5A
Other languages
German (de)
English (en)
Other versions
EP3253257A4 (fr
EP3253257A1 (fr
Inventor
Tomas MATTSON
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3253257A1 publication Critical patent/EP3253257A1/fr
Publication of EP3253257A4 publication Critical patent/EP3253257A4/fr
Application granted granted Critical
Publication of EP3253257B1 publication Critical patent/EP3253257B1/fr
Active legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/04—Extensible bedsteads, e.g. with adjustment of length, width, height
    • A47C19/045—Extensible bedsteads, e.g. with adjustment of length, width, height with entire frame height or inclination adjustments
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/04—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled
    • A47C23/043—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs
    • A47C23/0435—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs of adjustable resilience
    • 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • 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
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/012—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame raising or lowering of the whole mattress frame

Definitions

  • the present invention relates generally to an adjustable bed according to the preamble of claim 1.
  • the hardness of the mattress surface is uniform throughout the whole upper surface.
  • a person lying in the bed gives rise to different depression depending on which body part that is supported, so if the internal stress throughout the complete mattress is constant a depression depth depend on the weight of the body it is supporting.
  • One such personal property is the stiffness of the mattress which may depend on the user's weight, length and is also a matter of personal opinion. Further, there is also the need of more or less support for different body parts, e.g. shoulders, back, hip, legs which depend on body shape and weight. The sleeping or resting position the user has taken, on the back, the side etc., is another factor needed to take into consideration when the personal properties of the mattress of a bed shall be established.
  • a patient support deck lifting/lowering assembly comprising a frame elevating mechanism having first and second frames vertically spaced from one another.
  • the first frame is configured to be supported on a floor surface.
  • the second frame has a pair of longitudinally spaced elongate guide tracks extending coextensively with each lateral side of the second frame.
  • Lever arms are provided on the first frame and include at the distal ends thereof a follower member operatively coupled to a respective one of the guide tracks.
  • Each of the lever arms has thereon an elongate second guide track configured to receive thereon a distal end of one of the arms of a two arm lever pivotally mounted on the first frame.
  • Drive mechanisms are provided which operatively engage the second arm of the two arm lever to effect a change in elevation of the second frame relative to the first frame.
  • an adjustable bed comprising a plurality of hingedly interconnected support sections forming an articulated mattress support for supporting a mattress, and a support stand for supporting the articulated mattress support.
  • the mattress support presents downwardly exposed areas along opposite longitudinal sides of the mattress support.
  • squeeze-preventing spaces are formed between adjacent interconnected support sections at the longitudinal sides, wherein the support sections present a larger mutual spacing at the squeeze-preventing spaces and a smaller mutual spacing at locations where they are hingedly interconnected.
  • An object of the present invention is to provide an adjustable bed intended to solve the above mentioned drawbacks.
  • the adjustable bed comprises a bed frame comprising a primary base plate, a resilient mattress arranged on top of the primary base plate, at least a lifting arrangement comprising a secondary base plate, arranged between the primary base plate and the resilient mattress, and at least one motor arranged for lifting the secondary base plate.
  • the lifting arrangement further comprises first and second lever arm mechanisms, connected to the motor and arranged to lift the secondary base plate in relation to the primary base plate and guiding arrangements arranged to connect the secondary base plate to the primary base plate and to guide the secondary base during a lifting operation between first, second and third positions.
  • the guiding arrangements comprises scissor arms which are pivotally arranged in one end to the primary base plate and the secondary base plate and slidably arranged in one end to the primary base plate and secondary base plate in elongated slots.
  • the scissor arms are pivotally attached to each other.
  • the primary base plate or the primary and secondary base plates of the lifting arrangements are provided with elongated second apertures through which the scissor arms may extend in the first position, the second position and the third position.
  • the first and second lever arm mechanisms of the lifting arrangement are arranged in the vicinity of or along longitudinal sides of the bed frame. Further the first and second lever arm mechanisms of the lifting arrangement, are arranged below the primary and secondary base plates, in a rest position, and below and partially above the primary base plate, in an active position.
  • the primary base plate is provided with elongated first apertures through which the lever arms protrude and abut against the secondary base plate in the active position.
  • the lifting arrangement comprises an axle shaft connected to and driven by the motor and is arranged to drive both the first and second lever arm mechanisms.
  • the lever arm mechanisms comprises first and second lever arms which are provided with wheels arranged to abut against the secondary base plate, during a lifting motion.
  • the resilient mattress is preferably a pocket spring mattress or a viscoelastic foam mattress or a cold foam mattress.
  • the motor is a conventional motor used for vertically adjustable beds.
  • Fig. 1 shows a plan view of a bed from below according to the invention.
  • the bed comprises a frame 1 arranged around the bed.
  • the bed frame 1 comprises a primary base plate 2 arranged as a supporting structure for a mattress (not shown) and arranged on top of the primary base plate 2.
  • the primary base plate 2 extends along longitudinal inner sides 3 and transversal inner sides 4 of the bed frame 1.
  • the bed comprises at least a secondary base plate 5 and a lifting arrangement 6 for each secondary base plate 5.
  • the numbers of secondary base plates 5 depend on the number of zones of the bed that shall be possible to adjust.
  • the lifting arrangement 6 is arranged to lift and adjust the secondary base plate 5 in an essentially vertical direction in relation to the bed frame 1.
  • Fig. 1 there are shown two lifting arrangements 6 which are inverted in relation to each other, this in order to comply with a general motor 8.
  • the mattress 7 (see Fig. 2 ) is arranged on top of the bed frame 1.
  • the mattress 7 is also fixedly attached to the bed frame 7, this to remain in position on top of the bed frame 1 during a lifting operation.
  • the mattress 7 is a resilient mattress e.g. a pocket spring mattress, a viscoelastic foam mattress etc.
  • the lifting arrangement 6 comprises at least one motor 8 arranged for lifting of the secondary base plate 5 in relation to the primary base plate 2.
  • the motor 8 is preferably an electrical motor.
  • the motor 8 is preferably a mass produced conventional motor, which normally is used for vertically adjustable beds.
  • the motor 8 is arranged to operate the lifting arrangement 6 between a first, a second and a third position.
  • the first position is a rest position for the lifting arrangements 6, i.e. when the secondary base plate 5 is in its lowermost position, abutting against or in the vicinity of the primary base plate 2.
  • the second position is an active position for the lifting arrangements 6, i.e. when the secondary base plate 5 is lifted by any amount above the primary base plate 2 and located anywhere above the lowermost position and the third position which is the uppermost position. Further, the upper most position is defined by the configuration of the lifting arrangement 6.
  • the lifting arrangement 6 further comprises first and second lever arm mechanisms 9, 10, connected to the motor 8 and arranged to lift the secondary base plate 5 in relation to the primary base plate 2 and to regulate the internal pressure of the mattress 7.
  • the first and second lever arm mechanisms 9, 10 are of identical design, arranged on both sides of the motor 8.
  • the first and second lever arm mechanisms 9, 10 are connected to each other by means of an axle shaft 11 which is connected to and driven by the motor 8.
  • the axle shaft 11 is arranged to drive both the first and second lever arm mechanisms 9, 10 in a synchronous manner.
  • the axle shaft 11 may for example be provided with a gearwheel (not shown) and the motor 8 with a rack (not shown), which mesh in with each other when the motor 8 is operated.
  • Each of the first and second lever arm mechanisms 9, 10 comprises at least first and second lever arms12, 13, whereof each is provided with a wheel 14, 15 in its outermost end, arranged to abut against a lower side 16 of the secondary base plate 5, when a lifting motion is performed.
  • the first and second lever arm mechanisms 9, 10 are arranged in the vicinity of or along longitudinal sides of the bed frame 1, this to create a stabile configuration during a lifting operation.
  • the primary base plate 2 is provided with elongated first apertures 17 through which the first and second lever arms 12, 13 protrude and abut against the secondary base plate 5 when a lifting operation is performed.
  • the elongated first apertures 17 are arranged above the first and second lever arms 12, 13, such that the first and second lever arms 12, 13 may protrude through the elongated first apertures 17, when a lifting motion is performed.
  • Fig. 2 shows a section view A-A, in a first position of the lifting arrangement 6, seen from a longitudinal side of the bed.
  • the section view of Fig. 2 shows one of the first or second lever arm mechanisms 9, 10, which are arranged below the primary and secondary base plates 2, 5 in the first position.
  • the primary and secondary base plates 2, 5 are arranged to abut against each other or be in the vicinity of each other with a minor distance in between, in the first position.
  • the first and second lever arm mechanisms 9, 10, comprise several lever arms 12, 13.
  • a first 12 of the lever arms of the first and second lever arms mechanisms 9, 10 is fixedly attached to the axle shaft 11, driven by the motor.
  • a second 13 of the lever arms of the first and second lever arms mechanisms 9, 10 is fixedly attached to a pivot shaft 18.
  • the axle shaft 11 and the pivot shaft 18 are attached to the primary base plate 2 of the bed frame 1 by means of brackets 19 (shown in Fig. 1 ).
  • the axle shaft 11 and the pivot shaft 18 are connected to each other by means of a linkage mechanism 20.
  • the linkage mechanism 20 comprises a first linkage arm 21 which is fixedly attached to the axle shaft 11 and a second linkage arm 22 which is fixedly attached to the pivot shaft 18.
  • the first and second linkage arms 21, 22 are connected to each other by means of a connecting linkage arm 23, which connecting linkage arm 23 is pivotally attached to the first and second linkage arms 21, 22 of the linkage mechanism 20.
  • the first and second lever arms 12, 13 are provided with wheels 14, 15 in their outermost free ends. The wheels 14, 15 may protrude into the elongated first apertures provided in the primary base plate, in the first position.
  • the first and second lever arms 9, 10 and the linkage mechanism arms 21, 22, 23 are attached to their respective shaft 11, 18 in an angular relationship, which is defined by the stroke of the engine 8.
  • the amount of vertical adjustment is determined by the length of the lever arms 9, 10.
  • the maximal length of a stroke for the lifting arrangement is preferably between 50-150 mm.
  • the primary and secondary base plates 2, 5 are coupled to and guided in relation to each other by means of a guiding arrangement 24.
  • the guiding arrangement 24 comprises two pairs of scissor arms 25, 31 arranged on each of the longitudinal sides of the bed.
  • the scissor arms 25, 31 are pivotally arranged in one end to the primary base plate 2 and the secondary base plate 5 and slidably arranged in one end to the primary base plate 2 and the secondary base plate 5 in elongated slots 26.
  • the elongated slots 26 are provided in brackets 27, and the elongated slots 26 comprise a first end and a second end 28, 29.
  • the pivotable attachment and the slidable attachment of the scissor arms 25, 31 to the primary and secondary base plates 2, 5 are made by means of the brackets 27, 32 attached to the primary and the secondary base plate 2, 5. Further, the scissor arms 25, 31 are pivotally attached to each other.
  • the scissors arms 25, 31 are arranged in the area of the first end 28 of the elongated slots 26 and in the second position the scissor arms 25, 31 are located somewhere in between the vicinity of the first end 28 and the second end 29 of the elongated slots 26.
  • the first and second lever arm mechanisms 9, 10 are arranged to lift the secondary base plate 5, and the guiding arrangement 24 in the form of the scissor arms 25, 31 is arranged to physically connect the secondary base plate 5 to the primary base plate 2.
  • the guiding arrangement 24 is also arranged to guide and stabilize the secondary base plate 5, during a lifting operation, both in longitudinal and transversal direction in relation to the bed frame 1.
  • the primary base plate 2 or the primary and the secondary base plates 2, 5 are provided with elongated second apertures 30 through which the scissor arms 25, 31 may extend in the first and/or the second position, see Fig. 1 .
  • Fig. 3 shows the section view A-A, in the second position with a medium elevation, seen from a longitudinal side of the bed
  • Fig. 4 shows the section view A-A, in the third position with a maximum elevation, seen from a longitudinal side of the bed.
  • the adjustable bed In use the adjustable bed is operated between the first position seen in Fig. 2 and second and third positions seen in Fig. 3 and 4 .
  • the wheels 14, 15 in the outer ends of the first and second lever arms 12, 13 are not in contact with a lower side 16 of the secondary base plate 5.
  • the bed In the first position the bed is as an ordinary bed.
  • the motor runs the axle shaft 11 is turned, and the lifting arrangement 6 is activated and the wheels 14, 15 of the first and second lever arms 12, 13 protrude through the first elongated apertures 17 and will abut and roll against the lower side 16 of the secondary base plate 5, and the secondary plate 5 is raised in a vertical direction, and will thus press the mattress 7 (not shown in Fig. 3 and 4 ) against a person lying in the bed.
  • the guiding arrangement 24 will protrude through the first elongated apertures 17 when maneuvered between the first and second position. Thus, the guiding arrangement 24 will only guide the second base plate 5 during the vertical movement, and does not in any way carry up any weight. Thus, it is the lifting arrangement 6 that is carrying the load from the mattress 7 and the weight of the occupant of the bed.
  • the person lying in the bed will act as an anvil for the lifting arrangement 6 in operation.
  • the compression of the mattress is increased and changed and thus the material of the mattress 7 becomes more dense and stiff.
  • the user will experience the mattress 7 as more firm and stiff, and the mattress 7 will give more stabilizing support for that particular body part, that is placed above the raised secondary base plate 5 in question.
  • the personal properties of the mattress 7 may be adjusted independently of the original stiffness of the mattress 7.
  • the compression of the mattress may be decreased when the lifting arrangement 6 is lowered, between first, second and third position.
  • the scale of hardness for the mattress may be changed from soft to hard, and vice versa, where a number one may be hard and a number five may be soft on that scale, or vice versa.
  • the hardness of the mattress may be stiff, more or less, in one part and soft in another part of the bed, or in any other desirable configuration.

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Claims (10)

  1. Lit réglable conçu pour régler la dureté d'un matelas résilient comprenant :
    - un cadre de lit (1) comprenant une plaque de base primaire (2),
    - un matelas résilient (7) agencé au-dessus de la plaque de base primaire (2),
    - au moins un dispositif de levage (6) comprenant une plaque de base secondaire (5), agencé entre la plaque de base primaire (2) et le matelas résilient (7), et
    - au moins un moteur (8) agencé pour lever la plaque de base secondaire (5),
    caractérisé en ce que
    le dispositif de levage (6) comprend en outre
    - des premier et deuxième mécanismes de bras de levier (9, 10), reliés au moteur (8) et agencés pour lever la plaque de base secondaire (5) par rapport à la plaque de base primaire (2) de telle sorte que la plaque de base secondaire (5) presse le matelas résilient (7) contre une personne couchée dans le lit,
    - des dispositifs de guidage (24) agencés pour relier la plaque de base secondaire (5) à la plaque de base primaire (2) et pour guider la plaque de base secondaire (5) pendant une opération de levée entre des première, deuxième et troisième positions, et
    - la plaque de base primaire (2) est pourvue de premières ouvertures allongées (17) à travers lesquelles les mécanismes de bras de levier (9, 10) font saillie et viennent en butée contre la plaque de base secondaire (5) dans la deuxième et la troisième position.
  2. Lit réglable selon la revendication 1, dans lequel les dispositifs de guidage (24) comprennent des bras de ciseaux (25, 31) qui sont agencés de façon pivotante dans une extrémité à la plaque de base primaire (2) et à la plaque de base secondaire (5) et agencés de façon coulissante dans une extrémité à la plaque de base primaire (2) et à la plaque de base secondaire (5) dans des encoches allongées (26).
  3. Lit réglable selon la revendication 2, dans lequel les bras de ciseaux (25, 31) sont fixés de façon pivotante l'un à l'autre.
  4. Lit réglable selon la revendication 2 ou 3, dans lequel la plaque de base primaire (2) ou les plaques de base primaire et secondaire (2, 5) des dispositifs de levage (6) sont pourvues de deuxièmes ouvertures allongées (30) à travers lesquelles les bras de ciseaux (25, 31) peuvent s'étendre dans la première position, la deuxième position et la troisième position.
  5. Lit réglable selon la revendication 1 à 4, dans lequel les premier et deuxième mécanismes de bras de levier (9, 10) du dispositif de levage (6) sont agencés au voisinage ou le long de côtés longitudinaux (3) du cadre de lit (1).
  6. Lit réglable selon la revendication 1 à 5, dans lequel les premier et deuxième mécanismes de bras de levier (9, 10) du dispositif de levage (6) sont agencés en dessous des plaques de base primaire et secondaire (2, 5), dans la première position, et en dessous et partiellement au-dessus de la plaque de base primaire (2), dans la deuxième position.
  7. Lit réglable selon la revendication 1 à 6, dans lequel le dispositif de levage (6) comprend un arbre d'axe (11) relié au moteur (8) et entraîné par celui-ci et est agencé pour entraîner à la fois les premier et deuxième mécanismes de bras de levier (9, 10).
  8. Lit réglable selon la revendication 1 à 7, dans lequel les mécanismes de bras de levier (9, 10) comprennent des premier et deuxième bras de levier (12, 13) qui sont pourvus de roues (14, 15) agencées pour venir en butée contre la plaque de base secondaire (5), pendant un mouvement de levée.
  9. Lit réglable selon la revendication 1 à 8, dans lequel le matelas résilient (7) est un matelas à ressorts ensachés ou un matelas en mousse viscoélastique ou un matelas en mousse froide
  10. Lit réglable selon la revendication 1 à 9, dans lequel le moteur (8) est un moteur électrique utilisé pour des lits réglables verticalement.
EP16746910.5A 2015-02-05 2016-02-04 Lit à dureté réglable Active EP3253257B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1550120A SE540591C2 (en) 2015-02-05 2015-02-05 An adjustable bed adapted to adjust the hardness of a resilient mattress
PCT/SE2016/050086 WO2016126197A1 (fr) 2015-02-05 2016-02-04 Lit à dureté réglable

Publications (3)

Publication Number Publication Date
EP3253257A1 EP3253257A1 (fr) 2017-12-13
EP3253257A4 EP3253257A4 (fr) 2018-01-10
EP3253257B1 true EP3253257B1 (fr) 2019-07-24

Family

ID=56564414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16746910.5A Active EP3253257B1 (fr) 2015-02-05 2016-02-04 Lit à dureté réglable

Country Status (4)

Country Link
EP (1) EP3253257B1 (fr)
ES (1) ES2753166T3 (fr)
SE (1) SE540591C2 (fr)
WO (1) WO2016126197A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252170A (en) * 1963-08-08 1966-05-24 James R Frye Variable firmness mattress
US3739409A (en) * 1971-08-03 1973-06-19 Chitton K Adjustable mattress
JPS54126163A (en) * 1978-03-20 1979-10-01 Nippon Betsudo Seizou Kk Internallpressureeadjusted bed
JPS54159059A (en) * 1978-06-06 1979-12-15 Nippon Betsudo Seizou Kk Bed whose internal pressure can be adjusted
DE19826436A1 (de) * 1998-06-16 1999-12-23 Hoffmann Gmbh Polstermöbel mit verstellbarer Sitzhöhe und/oder Sitzhärte
US7150056B2 (en) * 2004-07-29 2006-12-19 Stryker Corporation Patient support deck lifting/lowering assembly
DK2380463T3 (da) * 2010-04-22 2013-04-22 Hilding Anders Internat Ab Anordning til en justerbar seng
TW201206373A (en) * 2010-08-13 2012-02-16 han-zhong Xu Mattress structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
SE1550120A1 (sv) 2016-08-06
EP3253257A4 (fr) 2018-01-10
WO2016126197A1 (fr) 2016-08-11
ES2753166T3 (es) 2020-04-07
SE540591C2 (en) 2018-10-02
EP3253257A1 (fr) 2017-12-13

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