EP0243361A1 - Chaise - Google Patents

Chaise

Info

Publication number
EP0243361A1
EP0243361A1 EP86900216A EP86900216A EP0243361A1 EP 0243361 A1 EP0243361 A1 EP 0243361A1 EP 86900216 A EP86900216 A EP 86900216A EP 86900216 A EP86900216 A EP 86900216A EP 0243361 A1 EP0243361 A1 EP 0243361A1
Authority
EP
European Patent Office
Prior art keywords
chair
base structure
superstructure
shaft
jack
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.)
Pending
Application number
EP86900216A
Other languages
German (de)
English (en)
Inventor
Stephen Martin Twigg
Ian Dampney
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.)
Broadstand Ltd
Original Assignee
Broadstand Ltd
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 Broadstand Ltd filed Critical Broadstand Ltd
Publication of EP0243361A1 publication Critical patent/EP0243361A1/fr
Pending legal-status Critical Current

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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • 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
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/002—Foldable, portable or collapsible chairs, e.g. for surgery or dental treatment
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0833—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0891—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair

Definitions

  • This invention relates to a portable chair for use in medical treatment or examination, obstetrics, minor surgery, chiropody, or dentistry, for example.
  • the invention provides a portable collapsible chair comprising a base structure, a superstructure which comprises a seat and a back rest, the superstructure being mounted on the base structure so as to be pivotable about a horizontal axis and a jack which acts between the superstructure and the base structure and is actuable to tilt the superstructure, the jack being releasable so as to allow free pivoting of the superstructure.
  • the invention provides a portable collapsible chair having a superstructure which is supported by a base structure so as to be pivotable about a horizontal axis and which is releasably connected to the base structure by connection means including a bar carried by the superstructure and a latching mechanism carried by the base structure.
  • connection means including a bar carried by the superstructure and a latching mechanism carried by the base structure.
  • the base structure comprising a front part and a rear part which are pivotable relative to each other about a horizontal axis and between which the bar is jammed by the latching mechanism so as to prevent mutual pivoting.
  • the invention provides a portable collapsible chair comprising a superstructure pivoted to a base structure and carrying a bar which is releasably connectable to the base structure by a latching mechanism, the latching mechanism comprising a hook-shaped latch pivotably mounted on an eccentric which is rotatable to trap the bar securely between the latch and the base structure.
  • the invention also provides a chair having at least one leg rest mounted on a rotatable shaft having a socket at one end, a shaft having a polygonal cross-section being axially movable, rotationally fixed, and coaxial with the socket, the polygonal shaft being movable to and from a position in which it engages in the socket so as to locate the rotatable shaft in a selected angular position corresponding to a desired angle of the leg rest.
  • Figure 1 is a perspective view of a portable medical chair
  • Figure 2 is a side view of the chair
  • Figure 3 is a perspective view of the chair in the folded condition
  • Figures 4 and 5 are diagrammatic side views of the chair, illustrating means for locking the seat of the chair in position;
  • FIGS. 6 and 7 diagrammatically illustrate a: detail of the locking means
  • Figure 8 is a diagrammatic perspective view of the chair, with certain parts omitted for clarity, illustrating means for tilting the upper part of the chair;
  • Figure 9 is an exploded perspective view of a catch mechanism allowing adjustment of the angle of a leg rest on the chair.
  • the chair illustrated has a base structure 1 comprising a rear part 2 and a front part 3 which are mutually pivotable about a horizontal axis.
  • the rear part 2 comprises a rear frame 4, having two legs 6 connected by a cross-piece 7, and side pieces 8 fixed to the upper ends of the respective legs.
  • the front part 3 has two legs 9 connected by a cross-piece 11 and pivoted to the respective side pieces 8 at 12.
  • the front part 3 is pivotable between an operative position ( Figures 1 and 2), in which the upper end portion of each of its legs 9 bears against an abutment surface 13 on the associated side piece 8, and an inoperative position ( Figure 3) for storage or transport, in which the upper end portion of each leg 9 bears against an abutment surface 14 on the associated side piece 8, with the legs 6 and 9 being approximately parallel.
  • the front part 3 can be locked in the operative position by means of a tie bar, as described below.
  • the chair also comprises a superstructure 16 which is pivotable relative to the base structure 1 about a horizontal axis.
  • the superstructure includes a seat 17 having a frame 18 with side members 19 which are pivoted to the respective side piece 8 of the base structure at 21. Behind the pivot point 21, each side member 19 is cranked upwards to form a back rest support portion 22.
  • the seat frame 18 is additionally connected to the base structure 1 by a tilting mechanism, described in detail below.
  • the superstructure 16 also includes a back rest 23 having a frame 24 with side members 26 pivoted to the portions 22 of the seat frame at 27. In the operative position shown in Figures 1 and 2, each side member 26 bears on a rear flange (not visible) on the associated portion 22.
  • the back rest 23 is pivotable to an inoperative position ( Figure 3) in which it is approximately parallel to the seat 17.
  • a head rest 28 is carried by a pillar 29 which fits iii a bracket 31 on the rear surface of the back rest 23.
  • the head rest 28 is removed from the bracket 31 and its pillar 29 is inserted into a carrying bracket 32 on the back rest frame 24 (or on some other convenient part of the chair).
  • the chair has two arm rests 33. To facilitate entering and leaving the chair each arm rest (or at least one of them) is pivotally connected to the chair. For this purpose the rear of the arm rest is cranked downwards and is pivoted at 34 to the associated support portion 22, which carries a flange 36 against which the arm rest is to bear.
  • the superstructure 16 is additionally connected to the base structure 1 by a jack 37 connected between the seat 17 and a tie bar 38 which is releasably locked to the base structure in a manner to be described below.
  • the jack 37 is a double screw jack having oblique struts 39 whose lower ends are pivoted to the tie bar 38 and whose upper ends are pivoted to respective nuts 41 running on respective right hand and left hand screw threads 42 on an actuating rod 43 rotatably mounted in brackets 44 on the seat frame.
  • the actuating rod 43 is turned by a handle 46 in order to vary the tilt of the superstructure 16 about the axis 47 of the pivots 21.
  • the handle 46 is hinged to the rod 43 so as to be foldable to a position ( Figures 2 and 3) in which it lies alongside the seat 17 and can be located there by a clip 48 on the seat frame.
  • the tie bar 38 is releasably connected to the base structure 1 by a pair of latching mechanism 49, one at each end of the bar 38.
  • Each latching mechanism 49 comprises a hook-shaped latch 51 freely pivotable on an eccentric 52 pivoted at 53 (coaxial with pivot 12) to the associated leg 9.
  • the tie bar 38 can be brought up to lie between the side pieces 8 and the legs 9 and hooked there by the latches 51 ( Figures 5 and 6).
  • the latches 51 are then raised by turning each eccentric 52 by means of an associated lever 54 to the over-centre position shown in Figure 7 so that the tie bar 38 is forced between the side piece 8 and the leg 9.
  • Two leg rests 56 are mounted on the front of the seat
  • Each leg rest 56 is hinged to an arm 57 fixed on a square shaft 58 which is rotatably mounted on the front of the seat frame 18. At its outer end the shaft 58 is fixed to a socket 59 having internal axial fluting ( Figure 9).
  • An axially movable, rotationally fixed polygonal (hexagonal) shaft 61 is mounted on the seat frame coaxially with the socket 59 and is urged towards the socket by a helical compression spring 62 acting between an abutment 66 on the seat frame and a circlip 63 in a groove 64 in the shaft 61.
  • the shaft 61 extends through the abutment 66 and is connected to a lever 67 by a pivot pin 68.

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 Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

Une superstructure (16) avec un siège (17) et un dossier (23) est montée sur une structure de base (1) de manière à pivoter autour d'un axe horizontal (47). Un vérin peut être actionné pour incliner la superstructure (16) par rapport à la structure de base (1). La chaise est pliante, le vérin (37) étant verrouillé de manière libérable à la structure de base (1). Des appui-jambes réglables (56) sont prévus.
EP86900216A 1984-12-20 1985-12-20 Chaise Pending EP0243361A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848432242A GB8432242D0 (en) 1984-12-20 1984-12-20 Chair
GB8432242 1984-12-20

Publications (1)

Publication Number Publication Date
EP0243361A1 true EP0243361A1 (fr) 1987-11-04

Family

ID=10571518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86900216A Pending EP0243361A1 (fr) 1984-12-20 1985-12-20 Chaise

Country Status (4)

Country Link
EP (1) EP0243361A1 (fr)
AU (1) AU5310886A (fr)
GB (1) GB8432242D0 (fr)
WO (1) WO1986003673A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821192A1 (de) * 1988-06-23 1989-12-28 Peter Schmidt Rueckenlehne fuer sitz- oder liegeplatten
US5171201A (en) * 1988-09-16 1992-12-15 Christopher Murray Back exercise device
FR2750373B1 (fr) * 1996-06-28 1998-08-14 Ampafrance Siege pour enfant a dossier inclinable
CN112076055B (zh) * 2020-09-27 2022-06-21 王守云 一种医用可收展的妇科上药椅

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1543612A (en) * 1921-12-27 1925-06-23 Pascaud Jules Louis Adrea Chair
US1685599A (en) * 1927-08-13 1928-09-25 John P Fletcher Collapsible dental chair
GB542060A (en) * 1940-09-20 1941-12-23 Donald Allen White Portable chairs
GB577665A (en) * 1944-05-09 1946-05-27 Dental Mfg Co Ltd Improvements in dental and like operating chairs
CH243066A (fr) * 1944-12-06 1946-06-30 Meytre Eugenie Fauteuil, notamment pour dentiste.
US2702072A (en) * 1952-11-21 1955-02-15 Carlos F Schuessler Folding dental operating chair
FR1170319A (fr) * 1957-03-26 1959-01-13 Fauteuil médical perfectionné
US3715142A (en) * 1971-06-10 1973-02-06 Hamilton Cosco Inc Folding high chair

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8603673A1 *

Also Published As

Publication number Publication date
WO1986003673A1 (fr) 1986-07-03
AU5310886A (en) 1986-07-22
GB8432242D0 (en) 1985-01-30

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Legal Events

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Inventor name: TWIGG, STEPHEN, MARTIN

Inventor name: DAMPNEY, IAN