EP0100490B1 - Dispositif d'élévation notamment pour fauteuil dentaire - Google Patents

Dispositif d'élévation notamment pour fauteuil dentaire Download PDF

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Publication number
EP0100490B1
EP0100490B1 EP83107114A EP83107114A EP0100490B1 EP 0100490 B1 EP0100490 B1 EP 0100490B1 EP 83107114 A EP83107114 A EP 83107114A EP 83107114 A EP83107114 A EP 83107114A EP 0100490 B1 EP0100490 B1 EP 0100490B1
Authority
EP
European Patent Office
Prior art keywords
lifting device
another
scissors arm
supporting
arms
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.)
Expired
Application number
EP83107114A
Other languages
German (de)
English (en)
Other versions
EP0100490A2 (fr
EP0100490A3 (en
Inventor
Klaus Stöckl
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0100490A2 publication Critical patent/EP0100490A2/fr
Publication of EP0100490A3 publication Critical patent/EP0100490A3/de
Application granted granted Critical
Publication of EP0100490B1 publication Critical patent/EP0100490B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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
    • A61G15/02—Chairs with means to adjust position of patient; Controls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle

Definitions

  • the invention relates to a lifting device, in particular for a dental patient chair, with scissor-like support arms arranged between a base part and a height-adjustable support part and connected to one another by an axis, which are arranged in pairs parallel to one another at a distance and one end of which is at a fixed position Part, the other ends of the movable part of a horizontal guide, on the one hand of the base part and on the other hand of the height-adjustable support part, are articulated.
  • Such a lifting device is known for example from US-A 3522925.
  • the lifting device is designed there as a double scissor arm construction with double scissor arms arranged on both sides of the chair, each connected by joints.
  • Such a lifting device is structurally complex and has a relatively large number of bearing points, which, in order to obtain sufficient stability, have to be very precise and therefore complex in terms of production technology.
  • Another disadvantage is that the scissor arms cannot be folded extremely deep.
  • the aim of the present invention is to provide a simpler, yet sufficiently stable lifting device with a sufficiently high usable stroke length and an extremely low lowest position, the construction of which is intended to reduce the width of the support arm structure without impairing the stability.
  • one of the support arms arranged in pairs is shortened to the axle bearing and both support arms are connected to one another by a transverse stiffening and thus form a torsionally rigid structural unit such that the two Support arm assemblies are arranged reversely facing each other, and that the free end of the long support arm of each assembly is hinged to the horizontal guide, which is arranged for one assembly on the stationary base part and for the other on the height-adjustable support part.
  • the lifting device according to the invention is a very compact, very small construction which is sufficiently stable and can be used particularly advantageously as a height adjustment device in a dental patient chair.
  • the patient chair 1 shows a diagrammatic representation of a dental work station, consisting of a patient chair 1, a doctor's device 2 arranged on the patient's right as viewed from the patient and an assistant's device 3 arranged on the left of the patient's chair.
  • the patient chair 1 essentially consists of an upper part of the chair and a lower part of the chair .
  • the lower part of the chair contains a base part 4, in which a horizontal guide 5 for the doctor's device 2, which will be explained in more detail later, and electrical and / or pneumatic supply modules combined in a connection box 6 are arranged, as well as a height adjustment device for the seat and backrest, which is concealed by a bellows 7 existing chair upper part 8.
  • the device 3 is also adjustable by means of a horizontal guide 9 (Fig.2) parallel to the longitudinal axis of the chair, in contrast to the horizontal guide 5 for the medical device 2, the fixed base part 4 over the entire length of the chair, ie runs approximately from the rear edge of the seat to at least the foot end of the seat or to the right end of the connection box 6 in the illustration according to FIG. 1, the horizontal guide 9 for the assistant's device 3 on the height-adjustable chair upper beam 10 only runs over its length.
  • a horizontal guide 9 Fig.2
  • the fixed base part 4 over the entire length of the chair, ie runs approximately from the rear edge of the seat to at least the foot end of the seat or to the right end of the connection box 6 in the illustration according to FIG. 1, the horizontal guide 9 for the assistant's device 3 on the height-adjustable chair upper beam 10 only runs over its length.
  • FIG. 3 shows the structure of the lower chair part including upper chair part support 10 in an exploded view. The view is from the side from which FIG. 2 is to be viewed.
  • the base part 4 is essentially formed from a base plate 11 which is rectangular in plan and which accommodates all the load-bearing parts, in particular the height adjustment device designated by 60 and the support 10 for the chair upper part 8, and a frame surrounding the base plate 11, which in turn consists of two the shorter sides arranged end pieces 12 and formed on the longer sides trim parts 13 and profile elements 14 is formed.
  • the end pieces 12 are formed as corner profiles, that is to say they have end parts 12 a which are angled at right angles and encompass the shorter sides of the base plate 11 and into which elastic connecting elements 15 are inserted, to which the trim parts 13 or the profile elements 14 can be fastened.
  • the right end piece 12 shown in the figure contains a shoulder 16, on which the lower end of the bellows 7 is hung.
  • the end pieces 12 are screwed onto the base plate 11, for what purpose these mounting blocks 17 and 12 tabs 18 1 are arranged on the end pieces.
  • the full-surface covering parts 13 are cross-divided into a section 13a, which essentially corresponds to the length of the chair upper part carrier 10 or of the bellows 7 surrounding the height adjustment device, and a section 13b, which corresponds to the remaining length, essentially the length of the connection box 6.
  • a holding part 20 is arranged on the base plate 11 or on a bar 19 connected to it, adapted to the profile of the covering parts 13, onto which the covering parts 13a, 13b are pushed with their one ends for fixing before they are attached to theirs other ends are connected to the end pieces 12 by means of the elastic connecting elements 15.
  • the trim part 13a like the right end piece 12, also contains an extension 16, on which the bellows 7 is hung.
  • the transverse division is also present in the angle profiles 14; here, too, the individual parts are connected to one another by elastic connecting elements 15; the upper angle section 14a, like the covering part 13a, contains a corresponding extension 16 in order to be able to fasten the bellows 7.
  • a major advantage of the transverse division of the trim parts and angle profiles in the manner described can be seen in the fact that the same trim parts can be used for the trim of both the seat support and the base part, specifically for a chair construction with a short base part, e.g. without connection box, as well as with a long base part, e.g. with junction box.
  • the two angle profiles 14 form a slot 21, from which a connection or support part 22 projects, on which the support column 23 (FIG. 1), which is bent off at the bottom, can be fastened for the device 2.
  • the support part 22 is fixedly connected to a slide 24 which is guided within the base part 4 over the entire length of the slot 21 in the horizontal guide 5.
  • the slot 21 is covered in each position of the carriage 24 by a belt 25 hung on the carriage 24, which is guided as an endless belt over deflection rollers 26 approximately rectangular.
  • various supply lines 27 which are joined to form a flat band and which bring the media (air and / or water and / or electrical current) required in the device 2 from a central supply source in the connection box 6 to the support part 22.
  • the chair upper part carrier 10 also consists of a base plate 31 which is rectangular in plan and has the same width as the base plate 11 and a frame consisting on the one hand of end pieces 32 on both sides and on the other hand cladding parts 33 and angle profiles 34, which in turn are attached by means of corresponding elastic connecting elements 35 are attached to the end pieces.
  • a base plate 31 which is rectangular in plan and has the same width as the base plate 11
  • a frame consisting on the one hand of end pieces 32 on both sides and on the other hand cladding parts 33 and angle profiles 34, which in turn are attached by means of corresponding elastic connecting elements 35 are attached to the end pieces.
  • approaches 36 On the end pieces and on the angle profiles are approaches 36, on which the bellows 7 can be hung.
  • the end pieces 32 are identical to the end pieces 12, that is to say they have fastening tabs 38 in the same place and at the same height; the associated brackets 37 are provided in the base plate 31.
  • the trim parts 33 also have the same dimensions as the trim sections 13a, which among other things simplifies the storage of the parts and also makes it possible to exchange the parts with one another.
  • the right end piece 12 provided with a shoulder can be used from the base part 4 to cover the upper part carrier.
  • connection or support part 42 protrudes through the slot 41 formed by the two angle profiles 34, a connection or support part 42, to which the support column 43 (FIG. 2) of the device 3 is fastened either directly or via a support arm.
  • the slot is covered by a webbing 45.
  • Base parts 61 are formed on the base plate 11 of the base part 4, on which a box-shaped frame 62 which is open at the top and bottom is fastened.
  • a scissor arm construction formed from two parts 63, 64 is articulated on the one hand on the frame 62 and on the other hand on the chair upper part support 10.
  • the scissor arm parts 63, 64 have the same structure except for the pivot point of a drive which will be explained in more detail later, i.e. they each form a long support arm 63a, 64a, a shorter support arm 63b, 64b and a transverse stiffener 63c, 64c in between.
  • the shorter support arm 63b, 64b has approximately half the length of the longer support arm 63a, 64a and is guided in a common axle bearing 65.
  • the ends 66 of the parallel support arms 63a, 63b, which end at the same height, are mounted on the upper chair support 10; the free end 67 of the longer support arm 63a is articulated to a bush 68 which, together with a guide rod 69 attached to the frame 62, forms a horizontal guide.
  • the two scissor arm parts 63 and 64 are arranged relative to one another in such a way that the legs of the U-shaped support arms face one another.
  • the two scissor arm parts can thus be arranged horizontally in the lowest position (FIG. 6).
  • the interlocking of the scissor arm parts would make an even lower end position possible if this were necessary due to certain design requirements.
  • the design of the lifting device in the manner described makes it possible to make the entire lifting device extremely narrow, as a result of which more space is created to the side of the scissor arm parts compared to other designs.
  • Another advantage is that sufficient storage space is provided below the scissor arms, which are in the lowest position for the supply lines.
  • Base part 4 and upper chair part 10 form on each side of the height adjustment device 60 a space 78 and 79, respectively, which serves as a cable duct for the cables 27 and 28.
  • This space extends parallel to the longitudinal axis of the chair and is on the one hand through the base and frame parts 61, 62 and on the other hand limited by the bellows 7.
  • the supply lines 27, 28 are combined in the manner of a ribbon cable and laid in the cable ducts 78, 79 to form a loop 50 so that they can follow the movement of the devices.
  • One end of the lines ends in the carriage 24 or 44, thus moving along the guideway, the other end opens in the connection box 6.
  • the length of the lines there is dimensioned such that they are still adequately guided in the respective end positions within the cable duct.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Chairs Characterized By Structure (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Claims (7)

1. Dispositif élévateur, notamment pour un fauteuil de dentisterie pour patient, comportant des bras de support (63a, 63b; 64a, 64b), qui sont disposés en forme de ciseaux entre une partie de base (4) et un organe de support (10) réglable en hauteur par rapport à cette partie de base, sont reliés entre eux par l'intermédiaire d'un axe (65) et sont disposés à distance parallèlement les uns aux autres, par couples, des premières extrémités étant articulées sur une partie fixe (62) et les autres extrémités étant articulées sur la partie mobile (68, 71) d'un dispositif de guidage horizontal (68, 69; 71, 72), d'une part, de la partie de base (4) et, d'autre part, de l'organe de support (10) réglable en hauteur, caractérisé par le fait que parmi les bras de support (63a, 63b; 64a, 64b) disposés par couples, l'un deux (63b, 64b) s'étend seulement jusqu'au niveau du support d'axe (65) et les deux bras (63a, 63b; 64a, 64b) sont reliés entre eux par un raidisseur transversal (63c, 64c), et forment ainsi une unité de construction qui est en soi résistante à la torsion, que les deux éléments de bras (63,64) sont disposés de manière à se faire face en étant inversés latéralement, et que l'extrémité libre (67, 70) du grand bras de support (63a, 64a) de chacun des éléments de bras (63, 64) disposés en forme de ciseaux est articulée sur le dispositif de guidage horizontal (68, 69; 70, 71) qui est disposé sur la partie de base fixe (4) pour un élément de bras (63) et sur l'organe de support (10) réglable en hauteur, pour l'autre élément de bras (64).
2. Dispositif élévateur selon la revendication 1, caractérisé en ce que les deux éléments de bras (63,64) disposés en forme de ciseaux possèdent un raidisseur transversal fermé (63c, 64c).
3. Dispositif élévateur suivant la revendication 2, caractérisé par le fait que le raidisseur transversal (63c, 64c) comporte des nervures diagonales croisées (77).
4. Dispositif élévatuer suivant l'une des revendications 1 à 3, caractérisé par le fait que les bras de support de chaque élément de bras (63, 64) possèdent une section transversale en forme de U et sont disposés de manière que leurs branches soient tournées l'une vers l'autre, entre la partie de base (4) et l'organe de support (10).
5. Dispositif élévateur suivant l'une des revendications 1 à 4, caractérisé par le fait que les deux éléments de bras (63, 64) disposés en forme de ciseaux possèdent une constitution identique.
6. Dispositif élévateur suivant l'une des revendications 1 à 5, caractérisé par le fait que les éléments de bras (63, 64) disposés en forme de ciseaux sont articulés sur un cadre en forme de boîte (62) qui peut être fixé sur une plaque de base (11) de la partie de base (4).
7. Dispositif élévateur suivant la revendication 6, caractérisé par le fait qu'un dispositif d'entraînement à broche (74 à 76), dont la broche (76) traverse le cadre (62), est monté sur l'un des éléments de bras (64) disposé en forme de ciseaux.
EP83107114A 1982-08-02 1983-07-20 Dispositif d'élévation notamment pour fauteuil dentaire Expired EP0100490B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823228834 DE3228834A1 (de) 1982-08-02 1982-08-02 Hubvorrichtung fuer insbesondere einen zahnaerztlichen patientenstuhl
DE3228834 1982-08-02

Publications (3)

Publication Number Publication Date
EP0100490A2 EP0100490A2 (fr) 1984-02-15
EP0100490A3 EP0100490A3 (en) 1984-12-27
EP0100490B1 true EP0100490B1 (fr) 1986-10-29

Family

ID=6169937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107114A Expired EP0100490B1 (fr) 1982-08-02 1983-07-20 Dispositif d'élévation notamment pour fauteuil dentaire

Country Status (4)

Country Link
US (1) US4533106A (fr)
EP (1) EP0100490B1 (fr)
JP (1) JPS5948395A (fr)
DE (2) DE3228834A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3611436A1 (de) * 1986-04-05 1987-10-08 Medical Res & Dev Ag Liege fuer patienten
NO171945C (no) * 1988-01-11 1993-05-26 Zenit Holding As Elektrisk drevet og trinnloes hoeyderegulerbar rullestol
US5651580A (en) * 1988-05-20 1997-07-29 La-Z-Boy Chair Company Linear actuation drive mechanism for power-assisted chairs and base therefor
US5061010A (en) * 1988-05-20 1991-10-29 La-Z-Boy Chair Co. Cam guide drive mechanism for power-assisted chairs and the like
US5466046A (en) * 1988-05-20 1995-11-14 La-Z-Boy Chair Co. Linear actuation drive mechanism for power-assisted chairs
US5482350A (en) * 1988-05-20 1996-01-09 La-Z-Boy Chair Company Linear actuation drive mechanism for power-assisted chairs
CA1299989C (fr) * 1988-05-20 1992-05-05 Larry P. Lapointe Fauteuil a bascule a positionneur motorise
EP0373245B1 (fr) * 1988-12-14 1993-02-17 Siemens Aktiengesellschaft Fauteuil de dentiste
DE8903118U1 (de) * 1989-02-16 1989-06-22 J.D. Moeller Optische Werke Gmbh, 2000 Wedel Operateurstuhl
DE9202049U1 (de) * 1992-02-18 1992-05-21 M&K Therapie-Geräte-Vertrieb GmbH & Co. KG, 35460 Staufenberg Hub- und Kippscherensystem
US5586740A (en) * 1994-12-19 1996-12-24 General Motors Corporation Chuckless power seat adjuster slide
US5735500A (en) * 1995-10-26 1998-04-07 General Motors Corporation Chuckless power seat adjuster slide
US5967471A (en) * 1997-12-17 1999-10-19 Lear Corporation Vehicle parallel seat lift with stable linkage
US8733508B2 (en) 2010-04-02 2014-05-27 Herkules Equipment Corporation Scissor lift assembly
US8622362B2 (en) 2010-05-25 2014-01-07 Deere & Company Suspension system
US20120181826A1 (en) * 2011-01-13 2012-07-19 Toyota Motor Engineering & Manufacturing North America, Inc. Occupant Classification System Sensor Covers and Seat Assemblies With Protected Occupant Classification System Sensors
PL235416B1 (pl) 2014-10-21 2020-07-27 Reac Poland Spolka Z Ograniczona Odpowiedzialnoscia Podnośnik, zwłaszcza do zmiany położenia siedziska w wózku inwalidzkim
US11932148B2 (en) * 2020-11-23 2024-03-19 Seats Incorporated Bellows for seat assembly

Family Cites Families (7)

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US3086742A (en) * 1960-12-20 1963-04-23 Clark Equipment Co Seat suspension
US3182947A (en) * 1963-01-29 1965-05-11 Gen Motors Corp Seat adjuster
US3522925A (en) * 1968-04-08 1970-08-04 Weber Dental Mfg Co Dental chair jack construction
US3804460A (en) * 1972-05-30 1974-04-16 Pelton & Crane Co Power operated treatment chair
JPS5442894A (en) * 1977-09-12 1979-04-05 Morita Mfg Working mechanism of treatment table and treatment table device that use said table
CA1128676A (fr) * 1978-06-26 1982-07-27 James R. Craig Table reglable pour radiologie
ATE2496T1 (de) * 1978-10-19 1983-03-15 Uop Inc. Verbesserungen an elastischen aufhaengungen fuer fahrzeugsitze.

Also Published As

Publication number Publication date
EP0100490A2 (fr) 1984-02-15
US4533106A (en) 1985-08-06
DE3367161D1 (en) 1986-12-04
JPH0567559B2 (fr) 1993-09-27
JPS5948395A (ja) 1984-03-19
EP0100490A3 (en) 1984-12-27
DE3228834A1 (de) 1984-02-02

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