EP1711083A1 - Support-siege et methode de support ergonomique d'une personne assise - Google Patents

Support-siege et methode de support ergonomique d'une personne assise

Info

Publication number
EP1711083A1
EP1711083A1 EP05704547A EP05704547A EP1711083A1 EP 1711083 A1 EP1711083 A1 EP 1711083A1 EP 05704547 A EP05704547 A EP 05704547A EP 05704547 A EP05704547 A EP 05704547A EP 1711083 A1 EP1711083 A1 EP 1711083A1
Authority
EP
European Patent Office
Prior art keywords
sitting
sitting support
base
support according
drive means
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Withdrawn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
EP05704547A
Other languages
German (de)
English (en)
Dutch (nl)
Inventor
Dirk Laurens Van Deursen
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.)
Ergodynamics Holding BV
Original Assignee
Ergodynamics Holding BV
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 Ergodynamics Holding BV filed Critical Ergodynamics Holding BV
Publication of EP1711083A1 publication Critical patent/EP1711083A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects

Definitions

  • the invention relates to a sitting support.
  • the invention particularly relates to a sitting support with which, during sitting, complaints of a user can be prevented and/or remedied. It is known that sitting on a chair can lead to various complaints in a user, for instance lower back complaints.
  • special, ergonomically adapted chairs are used that are, nevertheless, particularly expensive and are usually only suitable for one user.
  • individually adapted sitting supports are used that are expensive and regularly need to be adjusted. It is an object of the invention to provide a sitting support that actively contributes to the health and the wellbeing of the user during use.
  • a further object of the invention is to provide a sitting support that is easy to use and maintain and is particularly safe for the user.
  • a further object of the invention is to provide a sitting support that is universally applicable and can simply be used in different chairs, sofas and the like. At least a number of these and other objects are achieved with a sitting support according to the invention.
  • a sitting support according to the invention on a base, at least one upper part is borne, on which the user can sit during use.
  • the or each upper part can move relative to the base, in particular reciprocally driven with the aid of drive means.
  • a movement of the pelvis relative to the spinal column is induced that has a stimulating effect on the user.
  • a sitting support according to the invention has the advantage that it can simply be taken along and can be placed on different chairs, which are at least understood to mean any piece of furniture, surface or other element suitable for seating that can carry a sitting person. This allows a user to use this sitting support anywhere.
  • a sitting support according to the invention that is provided with an electric drive, fed by batteries, an accumulator or similar power supply independent of the electricity grid.
  • a further advantage of a sitting support according to the invention is that it is universally applicable, although, of course, an ergonomically shaped and/or individual top surface can be used.
  • a reciprocal movement is understood as at least comprising one rotating, at least pivotal movement and/or a translating movement, where a path is alternately traveled in opposite directions.
  • the reciprocal movement preferably has a frequency of less than 5 Hz, more in particular less then 2 Hz. It has been found that a low frequency is preferred, for instance less than 0.12 Hz, in particular 0.08 Hz or less.
  • one upper part is provided, pivotally about a central axle. Here, the user sits on the top surface and his or her pelvis is rotated.
  • the pivotal angle is preferably settable and relatively small, for instance a few degrees with respect to the axial line.
  • the sitting surface is formed by two top surfaces driven in opposite directions, going back and forth so that the desired reciprocal movement is obtained.
  • the movements of the top surfaces are preferably linear.
  • the stroke of each top surface relative to a middle position is relatively small, for instance a few centimeters.
  • the sitting support substantially consists of a dish-shaped base on which an upper part rotatable about a central axle is borne by a bearing.
  • a bearing particularly suitable for this are, for instance, cylindrical bearings or barrel thrust bearings between the base and the upper part.
  • the upper part preferably comprises a plate with a sitting cushion thereon.
  • the plate and the base may be provided with a suitable profiling for the bearing.
  • drive means are provided between the base and the upper part, preferably in a thus formed substantially closed space.
  • Drive means having a simple design may for instance comprise an eccentric, driven by an electric motor, for obtaining reciprocal movements.
  • the base On the bottom side, the base is preferably provided with friction-increasing means such as studs, rubber or different plastic feet or the like, for a stable placement on a seat.
  • Operating means may be provided on or near the top side for switching on and off and optionally setting the pivotal angle, the movement frequency and the like.
  • a similar structure with base and upper parts can be chosen, where an eccentric can be used for the drive.
  • a rotating disc or the like can also be used for the move ment of the upper parts.
  • the invention further relates to a method for moving a sitting person. According to the invention, such a method is characterized by the measures according to claim 12.
  • a sitting support, assembly and method according to the invention will be further described with reference to the drawing.
  • Fig. 1 shows, in disassembled condition, a sitting support according to the invention, in a first embodiment
  • Fig. 2 shows, in top plan view, an upper dish part of a sitting support according to Fig. 1;
  • Fig. 1 shows, in disassembled condition, a sitting support according to the invention, in a first embodiment
  • Fig. 2 shows, in top plan view, an upper dish part of a sitting support according to Fig. 1
  • FIG. 3 shows, in perspective view, a drive device with accumulator for a sitting support according to the invention
  • Fig. 4 shows, in perspective view and top plan view, a bearing part for a sitting support according to Fig. 1
  • Fig. 5 shows, in cross-sectional view, a part of an edge of a sitting support according to Fig. 1, in which the bearing is shown
  • Fig. 6 shows, in top plan view, a sitting support according to Fig. 1
  • Figs. 7A- C show three partial cross-sections according to lines A-A, B-B and C-C in Fig. 6
  • Fig. 8 schematically shows an eccentric of the drive device in an opening in the base
  • FIG. 9 schematically shows, in top plan view, an alternative embodiment of a sitting support according to the invention
  • Fig. 10 schematically shows a drive device for a sitting support according to Fig. 9
  • Fig. 11 shows, in side elevational view, a sitting support according to the invention on the seat of a chair with a user.
  • identical or corresponding parts have identical or corresponding reference numerals.
  • the exemplary embodiments shown are merely shown by way of illustration and should not be construed as being limitative in any manner.
  • Fig. 1 shows, in disassembled condition, a sitting support 1 according to the invention.
  • a base 2 in the form of a lower dish 3, manufactured, for instance, from plastic, and an upper part 4.
  • This upper part 4 is built up from an upper dish 5, for instance from plastic, with a stiffening plate 6 thereon, for instance from metal. On the stiffening plate 6, a sitting foam 7 is borne, covered by an upholstery 8. On the upper dish 5, a drive unit 9 is borne, and a control unit 10. An accumulator 11 is provided, preferably in the lower dish 3 which is connected, via a cable 12, with the drive unit 9 and/or the operating unit 10 and can be fed via the mains. Between the upper dish 5 and the lower dish 3, bearings 13 are included. An axle 14 is formed by a connecting bolt 15 and a nut 16 with which the upper dish 5 can be attached to the lower dish 3 so as to be rotatable, at least pivotable about the axle 14. In Fig.
  • a part of a sitting support 1 according to Fig. 1 is shown.
  • the different parts are clearly shown in assembled condition.
  • the sitting support 1 can be placed on the seat 19 of a chair 20, as schematically shown in Fig. 11.
  • the bearings 13 comprise barrel thrust bearings 21 and pivot bearings 22 for bearing the upper part 4 on the base 2 so that the upper part 4 can flexibly pivot about the axle 14.
  • the upholstery 8 has been pulled over the foam 7 and fixed with a drag cord 23 below the edge of the stiffening plate 6.
  • FIG. 3 shows the drive unit 9 with the control unit 10 and the accumulator 11.
  • the drive unit 9 comprises a motor 25 and a drive wheel 26, placed eccentrically on an axle 27. Suitable transmission has been provided between the motor 25 and the axle 27, for instance a sprocket transmission, worm wheel or the like.
  • Fig. 8 it is schematically shown how the drive wheel 26 has been placed in a recess 28 in the lower plate 3.
  • the drive unit 9 itself is attached to the upper dish 5, with the drive wheel 26 reaching through an opening 29.
  • the upper dish 3 and hence the upper part 4 will be pivoted through a small angle ⁇ relative to a middle position ⁇ , symbolically indicated with the line M - M in Fig. 6.
  • the angle ⁇ is small, for instance less than 20°, more in particular less than 10°. In the embodiment shown, this angle is for instance smaller than 5°, in particular approximately 2.5°.
  • this angle depends on inter alia the eccentricity of the drive wheel and its size and its position relative to the axle 14.
  • its design can be settable, for instance by settability of the eccentricity and/or the possibility of moving the drive unit 9 relative to the axle 14. Fig.
  • FIG. 2 shows, in top plan view, the arrangement of the drive unit 9 and control unit 10, and of the accumulator 11. Furthermore, three paths 30 for the barrel thrust bearings 21 can be seen here. These paths 30 each include an angle of for instance approximately 100°, so that three sets 31 of barrel thrust bearings 21, as shown in more detail in Fig. 4, can be placed therein and can only travel a limited path.
  • the control unit 10 is designed for switching the motor 25 on and off and, optionally, for setting the frequency for the reciprocal movement by setting the speed of rotation of the drive wheel 26, at least of the motor 25 or of the transmission ratio.
  • the reciprocal movement P is shown in Fig. 6 by arrow P and is the pivotal movement back and forth through the angle a.
  • Fig. 4 shows a set 31 of barrel thrust bearings 21.
  • each strip 32 is included, bent through a bending radius matching those of the paths 30.
  • each strip comprises eight radially extending pins 33 on which, each time, one barrel thrust bearing is placed.
  • the pins are split and provided with a widening 34 at their ends.
  • the bearings 21 can simply be pressed over the pins such that they are confined between the strip 32 and the widening 34.
  • the bearings 21 can be confined 5 between two strips bent complementary, as schematically indicated at the top of Fig. 4, in broken lines.
  • the paths 30 are provided in the lower dish 3 and upper dish 5 and each formed such that the barrel thrust bearings 21 are confined therein secured against lateral displacement.0 In Figs.
  • FIG. 7A-C three parts of cross-sections are shown, from which the profilings of the edges of lower dish 3 and upper dish 5 are given.
  • a handle 60 is visible for taking up and taking along the sitting support in a simple manner. It clearly appears from Fig. 7 that the space between the lower dish 3 and the upper dish 5 is substantially closed off.5
  • Fig. 1 shows that the accumulator can be placed from the bottom side into a recess 36 in the base 2, which can be closed off by a cover plate 37.
  • Fig. 5 shows a further cover plate 38 below the bolt 15 so that the bottom side is relatively flat.
  • the drive unit 9 and control unit 10 have been arranged near a longitudinal edge of the sitting support 1, as shown in Fig.
  • FIGs. 9 and 10 show an alternative embodiment, in which two upper parts 4A, 4B are borne on a base 2.
  • the upper parts 4A, 4B have been taken away in order to make the drive unit 9 visible.
  • the upper parts 4A, 4B move substantially linearly in the directions P, while each time, it holds that, if the left upper part 4A moves forwards, the right upper part 4B moves backwards and vice versa, so that reciprocal movements are obtained.
  • a motor 26 is provided, driving a disc 40 about an axle 41.
  • a o rod 42 is pivotally connected by a first end 43.
  • a pivot arm 44 is placed on a central axle 45 such that the pivot arm can pivot about the axle 45, approximately in the plane of the drawing.
  • the two ends 46A, 46B of the pivot arm are attached against the bottom side of the left and right upper part 4A, 4B, respectively.
  • the second end 47 of the rod 42 is attached to the pivot arm 44, at a distance from the axle 45.
  • the stroke D can be set, if desired.
  • the stroke D is relatively small, for instance less than 15 cm, more in particular less than 10 cm.
  • the stroke D is less than 5 cm, for instance between approximately 0.5 and 2 cm.
  • a sitting support is relatively light and small in size so that it can easily be taken along, for instance in a case.
  • the height H is preferably less than 20 cm, in particular less than 10 cm, more in particular between 0.5 and 8 cm, so that, within a normal range of adjustment of a chair and, optionally, arm rests and/or back rest thereof, an ergonomically correct sitting height can be obtained with the sitting support on the seat.
  • the length L and width B are smaller than 60 cm, more in particular smaller than 50 cm and preferably between 20 and 45 cm, so that it fits on a seat.
  • these sizes are not limitative in any manner.
  • a user 50 sits on the sitting support 1, while his or her ischia rest on the upper part 4, as indicated in Figs. 6 and 9 by means of circles 52.
  • the sitting support rests on the seat 19 of the chair 20 or any other suitable support, for instance a wheelchair, sofa, surface or the like.
  • the sitting support 1 When the sitting support 1 is switched on, the desired reciprocal movement will be obtained, so that the pelvis of the user will be pivoted back and forth, approximately through the angle ⁇ .
  • the user Preferably, the user then sits with his or her back against a rest 53 of the chair 20, so that the pivotal movement of the pelvis will occur relative to the lower back, at least the lumbar part thereof.
  • a method is used which improves the sitting comfort and which is ergonomically justified.
  • a sitting support according to the invention may have a different structure, for instance with the drive unit in the space between lower and upper dish, its form can be chosen to be different, as can the construction, a different sitting cushion can be used, for instance a separate sitting cushion that is borne on the upper dish and is easily exchangeable and/or cleanable and can be attached with, for instance Velcro®.
  • the top surfaces can be formed differently, depending on, for instance, the wishes of the user.
  • the sitting support can also be driven in a different manner, for instance by means of a linkage mechanism or similar mechanisms known to a skilled person.
  • the drive can also be positioned elsewhere, for instance below, next to or above the base.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

L'invention concerne un support-siège comprenant une base et au moins une partie supérieure mobile par rapport à la base, chaque partie supérieure déterminant une surface de siège sur laquelle repose, lors de son utilisation, au moins un ischion de l'utilisateur. La base et la partie supérieure sont dotées d'un moyen d'entraînement pour un entraînement réciproque de la partie supérieure par rapport à la partie de base.
EP05704547A 2004-01-13 2005-01-13 Support-siege et methode de support ergonomique d'une personne assise Withdrawn EP1711083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1025228A NL1025228C2 (nl) 2004-01-13 2004-01-13 Zitondersteuning en werkwijze voor het ergonomisch ondersteunen van een zittende persoon.
PCT/NL2005/000017 WO2005072564A1 (fr) 2004-01-13 2005-01-13 Support-siege et methode de support ergonomique d'une personne assise

Publications (1)

Publication Number Publication Date
EP1711083A1 true EP1711083A1 (fr) 2006-10-18

Family

ID=34825241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05704547A Withdrawn EP1711083A1 (fr) 2004-01-13 2005-01-13 Support-siege et methode de support ergonomique d'une personne assise

Country Status (4)

Country Link
US (1) US20070007808A1 (fr)
EP (1) EP1711083A1 (fr)
NL (1) NL1025228C2 (fr)
WO (1) WO2005072564A1 (fr)

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WO2007119242A2 (fr) 2006-04-18 2007-10-25 Active Chair Ltd. Module induisant du mouvement
US7891629B2 (en) * 2006-11-02 2011-02-22 Labrador Development Llc Rotatable chair support
US8480173B2 (en) * 2010-06-01 2013-07-09 Miao-Yuan Huang Auxiliary moving device
IT201600083098A1 (it) * 2016-08-05 2018-02-05 Leonardo Osti Dispositivo posturale dinamico
US10065071B1 (en) * 2017-05-24 2018-09-04 Michal Lorincz Exercise chair
US11395781B2 (en) * 2020-02-18 2022-07-26 Anna TAYLOR Transfer assist pivot board
US11744375B2 (en) 2021-07-14 2023-09-05 Anthro Form, Llc Seat configuration

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Also Published As

Publication number Publication date
NL1025228C2 (nl) 2006-05-18
US20070007808A1 (en) 2007-01-11
WO2005072564A1 (fr) 2005-08-11
NL1025228A1 (nl) 2005-07-14

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