EP0414717A1 - Agencement de reduction d'une charge. - Google Patents

Agencement de reduction d'une charge.

Info

Publication number
EP0414717A1
EP0414717A1 EP89904649A EP89904649A EP0414717A1 EP 0414717 A1 EP0414717 A1 EP 0414717A1 EP 89904649 A EP89904649 A EP 89904649A EP 89904649 A EP89904649 A EP 89904649A EP 0414717 A1 EP0414717 A1 EP 0414717A1
Authority
EP
European Patent Office
Prior art keywords
support element
load
spring
upright
arrangement according
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.)
Granted
Application number
EP89904649A
Other languages
German (de)
English (en)
Other versions
EP0414717B1 (fr
Inventor
Bjoern Sagerman
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.)
LUNDGREN, LARS
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 EP0414717A1 publication Critical patent/EP0414717A1/fr
Application granted granted Critical
Publication of EP0414717B1 publication Critical patent/EP0414717B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C9/02—Office stools not provided for in main groups A47C1/00, A47C3/00 or A47C7/00; Workshop stools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C15/00—Other seating furniture
    • A47C15/004—Seating furniture for specified purposes not covered by main groups A47C1/00 or A47C9/00
    • 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

Definitions

  • the present invention relates to a load-relieving arrangement for use in connection with seated or standing work of a kind which comprises a support element intended to act upon the forearm ares of the user, which support element is capable on the one hand of movement in essentially horizontal directions, and on the other hand of movement downwards against the effect of a spring which fully or partly relieves the weight of the user's arm.
  • a previously disclosed arrangement of the aforementioned kind consists of a sling suspended by means of a line in a so-called balance block, in which sling at least a part of the forearm, possibly including an adjacent part of the wrist or elbow, is supported to a degree which can be determined by adjustment of the balance block.
  • One object of the present invention is to propose a novel and improved load—rel ev ng arrangement of the kind described by way of introduction, which takes up little space and can be executed very discreetly, so that it can be readily accepted by everybody, and which provides a supporting effect which is essentially unaffected by the arm movements of the user.
  • the arrangement in accordance with the invention is characterized essentially in that the spring is a pneumatic spring of a kind already familiar from the prior art, in that the pneumatic spring has a piston, the maximum stroke volume of which is negligible in relation to the space containing the gas providing the spring action, which means that the pneumatic spring will exert essentially the same spring force irrespective of the vertical position of the support element, and in that the pressure of the gas providing the spring action is adjustable by means of an adjustment device capable of operation by the user.
  • Fig. 1 is a partial front view of a chair fitted with a load—
  • Fig. 2 is a side view on an enlarged scale of the load—relieving arrangement in accordance with Fig. 1.
  • Fig. 3 is a view from the rear of the load-relieving arrangement in accordance with Fig. 1.
  • Fig. 4 is an axial sectional view on an enlarged scale through a lower part of the load—rel eving arrangement in accordance with Figs. 1—3.
  • Fig. 5 is an axial sectional view on an enlarged scale through an upper part of the load—relieving arrangement in accordance with Figs. 1—3.
  • Fig. 1 shows a chair with a seat 1, illustrated here in part only, a leg structure 2 and a backrest 3.
  • a load—relieving arrangement indicated generally by the designation 4, comprising a support element 5 carried by an upright assembly consisting of the parts 6 and 7.
  • the upright assembly 6, 7 is connected at a considerable distance beneath the support element 5 via a universally articulated device 8 to a bracket 9 mounted on the chair at the side of the seat.
  • the bracket 9 can thus be executed in such a way that the universally articulated device 8 is capable of being attached to it in different positions, viewed in the sense of the depth of the seat 1 of the chair.
  • the universally articulated device 8 permits pivoting of the upright assembly 6, 7 both about a horizontal axis 10, that is to say forwards and backwards in Fig. 1, and about axes running essentially perpendicularly to it, that is to say to one side and the other, as shown by the arrows 11 in Fig. 1.
  • the universally articulated device 8 is preferably spring—loaded towards a neutral position indicated in Fig. 1.
  • FIG. 2 An upright assembly 6, 7 with its associated support element 5 is shown in more detail in Figs. 2—5.
  • the parts 6 and 7 of the upright assembly are supported in such a way as to be capable of longitudinal displacement or of telescoping relative to one another, in conjunction with which one part 6 exhibits a fastening lug 12 via which it is secured in a detachable fashion to the universally articulated device 8 by means of a screw 13.
  • This screw 13 passes through an essentially vertical slot 14 arrranged in the fastening lug 12, which slot permits the part 6 to be secured to the universally articulated device 8 at different positions of height and inclination relative to the chair seat 1.
  • the upright component 7 and with it the support element 5 are capable of being displaced downwards against the effect of a pneumatic spring consisting of a piston 15, which is mounted in a guide 16 in such a way as to be capable of pivoting and of axial displacement, so as to permit movement into a space 17 filled with the gas providing the spring action, for example air, under positive pressure.
  • the maximum stroke volume of the piston 15 is selected for this purpose so as to be so insignificant in relation to the space 17 containing the gas providing the spring action that the pneumatic spring exerts essentially the same spring force irrespective of the vertical position of the support element 5.
  • the pneumatic spring piston 15 consists of a cylindrical, essentially vertical rod, the lower end of which is rigidly connected via a socket 18 to the lower end of the upright component 6 executed as a straight tube.
  • the piston 15 projects upwards through the upright component 6 and is mounted in a gas—tight fashion in the guide 16, which is rigidly attached inside a lower, straight part of the similarly tubular upright component 7.
  • the guide 16 and the lower part of the upright component 7 surrounding it thus slide downwards on the piston 15 and into the upright component 6.
  • the piston 15 is fitted at a point close to the socket 18 with a radially projecting pin 19, in conjunction with which the downward movement of the support element 5 is restricted through the engagement between that pin 19 and the lower end of the guide 16.
  • Also executed in the lower end of the guide 16 is an angled groove 20, in which the pin 19 can be accommodated by pushing down and turning the guide 16, so that it retains the guide 16, and with it the upright component 7 and the support element 5, in a detachable fashion in a lower ineffective position.
  • the upright component 7 exhibits, as may be appreciated from Fig. 2, an essentially 'C 1 —shaped rearward—curved part 23 in the area immediately beneath the support element 5.
  • the support element 5 in the embodiment illustrated here is essentially of 'U'—shaped cross—section and is pivotal ly mounted about a shaft 24 passing across same.
  • the support element 5 benefits from its small thickness measured in the vertical sense. It is situated on the side of the 'C—shaped part 23 of the upright component 7 facing towards the user, and its underside is situated level with or below the top part of the part 23.
  • the element 5 exhibits at its rear end an upward—inclined base 25 (Fig. 2), such that, by engaging with the user's elbow, unintentional sliding of the forearm towards the rear is prevented.
  • an adjuster device is provided in the form of a pump built into the upper end of the 'C—shaped part 23 and a valve 26, 27 (Fig. 5).
  • the valve comprises a screw 26 capable of being operated by the user, which screw is installed in a valve pipe 27 running between the space 17 and the surrounding atmosphere, with a valve orifice capable of being opened and closed by means of the screw 26.
  • the pump comprises a pump piston 28 with a handle 29 capable of operation by the user.
  • the pump piston 28 is mounted in such a way as to be capable of axial displacement inside a pump cylinder 20, which communicates with the space 17 via a non—return valve 31.
  • the scope of the invention nevertheless permits the alternative arrangement of a pressurized gas cartridge, for example, in place of the pump 28—31.
  • the universally articulated device heed not necessarily spring back into position, but may exhibit a small amount of inherent friction, so that the upright component 6 will, in the absence of lateral forces acting on same, maintain its direction relative to the chair 1—3, whilst the support element 5 and the upright component 7 will change their position relative to the upright component 6.
  • the load—relieving arrangement can also be applied to a work table or a work bench.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

Un agencement pour réduire une charge, utilisé dans un travail assis ou debout, comprend un élément de support (5) conçu pour agir sur la région de l'avant-bras de l'utilisateur. Ledit élément de support est capable d'une part d'effectuer un mouvement dans des sens sensiblement horizontaux, et d'autre part d'effectuer un mouvement vers le bas contre l'effet d'un ressort (15 à 17), lequel soulage entièrement ou totalement le poids du bras de l'utilisateur. Ledit ressort consiste en un ressort pneumatique, dont le volume de course maximum est si insignifiant par rapport à l'espace (17) contenant le gaz assurant l'action de ressort que ledit ressort pneumatique exerce sensiblement la même force de ressort quelle que soit la position verticale de l'élément de support (5).
EP89904649A 1988-04-12 1989-04-06 Agencement de reduction d'une charge Expired - Lifetime EP0414717B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8801349 1988-04-12
SE8801349A SE466040B (sv) 1988-04-12 1988-04-12 Avlastningsanordning vid armstoed

Publications (2)

Publication Number Publication Date
EP0414717A1 true EP0414717A1 (fr) 1991-03-06
EP0414717B1 EP0414717B1 (fr) 1993-12-01

Family

ID=20371988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89904649A Expired - Lifetime EP0414717B1 (fr) 1988-04-12 1989-04-06 Agencement de reduction d'une charge

Country Status (6)

Country Link
EP (1) EP0414717B1 (fr)
AU (1) AU3421089A (fr)
CA (1) CA1299084C (fr)
DE (1) DE68911139T2 (fr)
SE (1) SE466040B (fr)
WO (1) WO1989009558A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268396A (en) * 1992-06-18 1994-01-12 Cambrook Ltd An arm or wrist support
US5385322A (en) * 1993-10-01 1995-01-31 Baxter International Inc. Ergonomic elbow rest

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147946A (en) * 1961-10-13 1964-09-08 Vacudent Mfg Company Utility stool
DE2819867A1 (de) * 1978-05-05 1979-11-08 Kaessbohrer Fahrzeug Karl Armlehne fuer die den mittelgang eines omnibusses begrenzenden sitze
FR2565085B1 (fr) * 1984-05-29 1986-09-05 Coutte Marcelle Dispositif a accotoir reglable en hauteur pour siege, et siege equipe de tels accotoirs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8909558A1 *

Also Published As

Publication number Publication date
EP0414717B1 (fr) 1993-12-01
SE8801349D0 (sv) 1988-04-12
SE466040B (sv) 1991-12-09
SE8801349L (sv) 1989-10-13
DE68911139D1 (de) 1994-01-13
WO1989009558A1 (fr) 1989-10-19
CA1299084C (fr) 1992-04-21
DE68911139T2 (de) 1994-06-16
AU3421089A (en) 1989-11-03

Similar Documents

Publication Publication Date Title
US5671972A (en) Seat back adjustment mechanism for a chair
CA1098021A (fr) Traduction non-disponible
US4685730A (en) Seat, especially work seat, with several positions
JP2505458B2 (ja) ガス圧ばねを備えた高さ調節可能な回転椅子
US6997511B2 (en) Seating device
US4877291A (en) Reclining chair
US4695093A (en) Work chair
US7914078B2 (en) Adjustable lower seat for use with a stand and lean type backrest
US8210109B1 (en) Pneumatic adjustable-height table
JPS5949802B2 (ja) 人間工学的椅子
EP0263535A2 (fr) Chaise avec siège et dossier mobile
US4369997A (en) Chair
EP1389931B1 (fr) Siege pouvant recevoir un corps ou une partie d'un corps
US5033791A (en) Chair frame
US6283047B1 (en) Height-adjustable table or the like
US4747640A (en) Chair support
US5370445A (en) Chair control
US6578918B1 (en) Chair
FI73585C (fi) Monteringsanordning foer en stolsits.
EP0414717A1 (fr) Agencement de reduction d'une charge.
US6739653B1 (en) Wheelchair table with ergonomic aid
EP0562305B1 (fr) Ensemble pour chaise avec dossier et appui-jambes réglable
US6398305B1 (en) Chair with continuously adjustable seating angle
EP1799492B1 (fr) Mécanisme de réglage de dossier en j
EP0030806A2 (fr) Chaise avec mécanisme de siège réglable

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901009

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB NL

17Q First examination report despatched

Effective date: 19920325

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LUNDGREN, LARS

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB NL

REF Corresponds to:

Ref document number: 68911139

Country of ref document: DE

Date of ref document: 19940113

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19960430

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19971101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19971101

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990305

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000406

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001123

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020201