EP0373245A1 - Fauteuil de dentiste - Google Patents

Fauteuil de dentiste Download PDF

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Publication number
EP0373245A1
EP0373245A1 EP88120938A EP88120938A EP0373245A1 EP 0373245 A1 EP0373245 A1 EP 0373245A1 EP 88120938 A EP88120938 A EP 88120938A EP 88120938 A EP88120938 A EP 88120938A EP 0373245 A1 EP0373245 A1 EP 0373245A1
Authority
EP
European Patent Office
Prior art keywords
articulated
chair
seat
adjustment
dental patient
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
EP88120938A
Other languages
German (de)
English (en)
Other versions
EP0373245B1 (fr
Inventor
Klaus Ing.-Grad. Stöckl
Bernd Dipl-Ing Fh. Becker
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
Priority to EP88120938A priority Critical patent/EP0373245B1/fr
Priority to DE8888120938T priority patent/DE3878566D1/de
Priority to JP1989143565U priority patent/JPH0515300Y2/ja
Priority to US07/450,618 priority patent/US5015035A/en
Publication of EP0373245A1 publication Critical patent/EP0373245A1/fr
Application granted granted Critical
Publication of EP0373245B1 publication Critical patent/EP0373245B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a dental patient chair with means for adjusting the seat height, the inclination of the seat and backrest and the position of the seat and backrest in the longitudinal direction of the chair.
  • the invention specified in claim 1 is therefore based on the object of specifying a dental patient chair, the upper part of which can be created with less mechanical effort and also with less space requirement than before, it being taken into account that the ergonomic and treatment-related aspects mentioned at the outset correspond to the the versatile adjustment options of the chair required today.
  • a major advantage of the construction according to the invention is that for the adjustment of the upper part of the chair, in accordance with the intended degrees of freedom, a construction which is relatively simple from a mechanical point of view and which does not require any longitudinal displacement elements is provided.
  • the mechanism provided according to the invention practically consists only of a fixed base part, two articulated arms, three drive motors, control electronics and a patient bed forming the upper part of the chair. This can be made in one or more parts. Both electromotive and hydraulic drives can be used as adjusting drives.
  • FIG. 1 shows a basic illustration of a dental patient chair in a side view.
  • the adjustment mechanism 4 is such that the upper chair part 1 can perform a height adjustment according to the arrows 6, an inclination of the backrest according to the arrows 7 and a longitudinal displacement of the entire upper chair part according to the arrows 8.
  • the adjustment mechanism 4 consists of two articulated arms 9, 10 which are articulated to one another at the articulation point 11 and whose free ends on the one hand via an articulation point 12 with a rigid attachment part 13 of the chair upper part 1 and on the other hand at the articulation point 14 with a fixed one on the standing level 5 Base part 15 is articulated.
  • the two articulated arms 9, 10 can be adjusted with the aid of three adjustment drives 16, 17, 18 so that the upper part of the chair can be moved in the direction of arrows 6, 7 and 8.
  • the adjustment drives 16, 17 and 18 are advantageously spindle drives, the motors M1, M2 and M3 of which, as shown in simplified form in FIG. 2, are controlled via a control device 20 which will be explained in more detail later.
  • the control can take place in a known manner either via program selection buttons 19 or with the aid of individual buttons 21, 22, 23, which are combined, for example, in a keypad 24 arranged on the backrest 3 of the chair.
  • the spindle drive 16 is connected to the electric motor M1 on the one hand via a joint 25 to the articulated arm 9 and on the other hand by means of a joint 26 to an attachment part 27 fastened to the seat 2.
  • the adjustment drive 17 with the adjustment motor M2 is connected analogously to the adjustment drive 16 on the one hand by means of a joint 28 to the articulated arm 10 and on the other hand by means of an articulation 29 to an extension 30 of the articulated arm 9.
  • the adjustment drive 18 is by means of a joint 31 with an elevated base 34 of the base part 15 and connected to an extension 33 of the articulated arm 10 by means of joint 32.
  • the three adjustment motors M1, M2 and M3 must be precisely controlled in order to achieve a harmonious movement of the patient chair in the direction of the three arrows 6, 7 and 8. If, for example, the upper part of the chair is only adjusted in height, ie only in the direction of the arrows 6, it is not sufficient to activate only one adjustment drive; rather, all three adjustment motors have to be controlled here.
  • the control is carried out with the aid of the control device 20 shown in FIGS. 2 and 10, which contains a microprocessor which receives information about the respective actual position of the relevant chair parts via position transmitters G1, G2 and G3 and which then adjusts the adjusting motors M1, M2 and M3 accordingly the desired adjustment.
  • the transmitters G1 to G3, which indicate to the control device 20 the respective position of the relevant articulated arm or chair part, can be of an electrical, optical or optoelectronic type and can be arranged either on the drives themselves or on the articulation points of the articulated arms.
  • the lifting cylinders would be controlled by the control unit 20 via electromagnetic valves.
  • FIG. 3 shows the patient chair according to FIG. 1 in a perspective view obliquely from the front in a raised position.
  • the two articulated arms 9, 10 each consist of two spaced-apart side cheeks 9a, 9b; 10a, 10b, which practically form a U-shaped part through cross-connecting struts 9c, 10c. It can be seen from the illustration that the side cheeks 10a, 10b do not run parallel to one another, but are at a smaller distance from the articulation point 11 than from the articulation point 14. The distance A of the joints 11 is thus smaller than the distance B of the joints 14. The same also applies to the articulated arm 9, the side cheeks 9a, 9b of which lie within that of the articulated arm 10. This reduction in the distances in the area of the connecting joint 11 results in a constriction which creates additional space in this area for accommodating other components. E.g. the free space thus obtained can be used to accommodate a sliding track or to hold a device (doctor's or assistant's device).
  • the base part 15, as shown, has a stand base 34 which is arranged such that the joints 14 to which one end of the articulated arm 10 is articulated are arranged adjacent to the foot end of the chair, namely at a height C (FIG. 1), which corresponds approximately to the length D of the articulated arm 10 articulated there.
  • This height is expediently about 300 mm above the level 5.
  • the two articulated arms 9, 10 are expediently of the same length; however, this is not absolutely necessary.
  • spindle drives are used in which the spindle is moved in and out of the spindle drive part.
  • the drive parts on the motors flanged spur gears that drive the spindles.
  • Worm or toothed belt gears can also be used instead of the helical geared motors.
  • the adjustment drives what has already been said about the embodiment according to FIG. 1 applies, ie for structural or other reasons the articulation points of the adjustment drives can also be selected differently than shown. It is also conceivable to reverse the linkage of the gear and spindle, as shown.
  • the embodiment according to Figures 5 and 6 differs from the previously described embodiments in that instead of the spindle drives, electric or hydraulic motors with very high reduction gears, for example planetary gears, are provided and these drives are arranged coaxially at the articulation points of the articulated arms and thus drive them directly . drive.
  • two independently movable articulated arms 36, 37 are present on a stand base 35, which corresponds to that designated by 34 in FIG. 1, one end of which is interconnected by means of articulation 38 and the other ends of which is articulated by means of joints 39 to base 35 and on the other hand, are articulated by means of joints 40 to an extension 41 of the upper part of the chair.
  • adjustment drives with adjustment motors 42, 32 and 44 are provided.
  • Low-voltage direct current motors are preferably used as adjusting motors, which, as shown in simplified form in FIG. 2, are controlled independently of one another.
  • the engine speeds are reduced to the "effective speed" of the parts to be adjusted (articulated arms and seat frame or articulated arm and base) using ge suitable gear components, which are designated in FIGS. 5 and 6 with 45, 46 and 47.
  • Such gears can be, for example, planetary gears.
  • the torque transmission takes place in the illustrated embodiment in that the gear components are rotatably connected to the chair base 35, the articulated arm 36 and shoulder 41 and the drive shaft of the gear is rotatably connected to the articulated axes 38, 39 and 40 of the articulated arms 36, 37.
  • the arrangement of the drive units (motor and transmission), as shown in dashed lines in FIG. 6, can be provided both inside and outside the articulated arms.
  • An arrangement of the drive unit within the articulated arms has the advantage that the output can take place on both sides, whereby a better torsional rigidity of the articulated arms is achieved.
  • the height adjustment of the seat in the embodiment presented is largely carried out by pivoting the articulated arm 36 around the axle bearing 39, the longitudinal adjustment is primarily carried out by pivoting the second pivot arm 37 around the axle bearing 38.
  • control unit 20 (FIG. 2) in accordance with the position of the position transmitter.
  • FIG. 7 shows an embodiment which does not require any electronic regulation of the adjustment drives compared to the ones described so far, but which does not require such an exact movement supply sequence guaranteed, as the previously described embodiments.
  • the articulated arms consist of parallelogram linkage arms 45, 46, one articulated axis of which is articulated to a common connecting part 50 and the other ends of which are articulated to a base 51 via articulations 57 and to a support part 52 via articulations 58, to which the articulation 53 is used
  • Chair top 1 is articulated.
  • the one parallelogram linkage 49 is used in this version mainly for height adjustment of the upper part of the chair, while the parallelogram linkage 48 is used for adjusting the chair in the longitudinal direction of the chair.
  • the adjustment drives used are electromotive or, as shown in the figure, hydraulic adjustment drives 54 to 56.
  • FIG. 8 first shows the possibility of movement offered by the chair base mechanism according to the invention.
  • the curve labeled 60 shows the envelope curve within which movement of the upper part of the chair is possible on the basis of the double articulated arm construction explained. For the sake of simplicity, this envelope curve 60 is shown for the articulation point 12.
  • the strongly bordered curve 60a within the envelope curve 60 represents the adjustment range that can be used in practice. In the following consideration, it is assumed that the articulation point 12 (representative of one any other point of the upper chair part) from the starting position P0 (with the coordinates x0, y0) to the position P1 (with the coordinates x1, y1) is to be brought.
  • the position P1 is represented, for example, by the program P1, which can be called up using one of the program selection buttons 19. In order to bring the upper part of the chair from the reference point P0 to the point P1, this would have to be carried out both upwards and forwards (towards the foot end).
  • the control unit 20 contains a central processor 61 (CPU) to which the switches 21 to 23 for manual adjustment of the upper part of the chair and on the other hand the program selection buttons 19 for automatic adjustment of the upper part of the chair are connected to one of the three freely selectable chair positions P 1 to P 3 to the serial interfaces 63 are.
  • CPU central processor
  • the sensors G1 to G3 with the interposition of A / D converters 64 and the adjustment motors M1 to M3 with the interposition of A / D converters 65 and servo units 66, which include a power output stage for the motor with control circuit, are also connected.
  • the work program for the CPU is designated, with 68 the memory for the programs P1 to P3.
  • the electronics of the control unit 20 asks which actual values the sensors G1 to G3 have. From this information, the processor 61 then calculates the coordinates (x0, y0) of P0. Then the processor calculates the shortest distance (S1 in Fig. 8) between the starting point and the selected point P1 with the coordinates x1 and y1.
  • the movement transitions are smooth, which results in a so-called ramp curve, as shown in FIG. 9 above.
  • a ramp curve there is a gentle increase over a certain first time period a, a uniform rise over a certain second time period b, and a gentle decay of the movement over a third time period c (until the selected position is reached).
  • Such a speed behavior for the three motors M1 to M3 is shown in the V / t diagrams in FIG. 9 below the flow curve shown.
  • the computer of the central processor 61 calculates the individual V / t diagrams for the individual motors M1 to M3 on the basis of the specified flow curve.
  • the voltages required to achieve the speed values in accordance with the predefined curve are supplied to the adjusting motors M1 to M3 via the power output stages 66.
  • control loops are preferably provided which control and, if necessary, correct the curve values by constantly querying the values of the transmitters G1 to G3 and comparing them with the target values.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
EP88120938A 1988-12-14 1988-12-14 Fauteuil de dentiste Expired - Lifetime EP0373245B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP88120938A EP0373245B1 (fr) 1988-12-14 1988-12-14 Fauteuil de dentiste
DE8888120938T DE3878566D1 (de) 1988-12-14 1988-12-14 Zahnaerztlicher patientenstuhl.
JP1989143565U JPH0515300Y2 (fr) 1988-12-14 1989-12-11
US07/450,618 US5015035A (en) 1988-12-14 1989-12-14 Dental patient chair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88120938A EP0373245B1 (fr) 1988-12-14 1988-12-14 Fauteuil de dentiste

Publications (2)

Publication Number Publication Date
EP0373245A1 true EP0373245A1 (fr) 1990-06-20
EP0373245B1 EP0373245B1 (fr) 1993-02-17

Family

ID=8199665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120938A Expired - Lifetime EP0373245B1 (fr) 1988-12-14 1988-12-14 Fauteuil de dentiste

Country Status (4)

Country Link
US (1) US5015035A (fr)
EP (1) EP0373245B1 (fr)
JP (1) JPH0515300Y2 (fr)
DE (1) DE3878566D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019666A2 (fr) * 1995-11-29 1997-06-05 Siemens Aktiengesellschaft Dispositif de reglage du siege et du dossier a accouplement force d'un fauteuil de dentiste
EP1304793A2 (fr) * 2001-10-19 2003-04-23 Okin Gesellschaft für Antriebstechnik MbH & Co. KG Alimentation en tension pour l'entraínement de meuble
WO2007113395A1 (fr) * 2006-04-03 2007-10-11 Lifestand 'vivre Debout' Fauteuil multipositions pour handicape

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517933B1 (fr) * 1991-06-10 1995-03-22 Siemens Aktiengesellschaft Fauteuil de dentiste avec appui tête règlable
DE59105058D1 (de) * 1991-06-10 1995-05-04 Siemens Ag Zahnärztlicher Patientenstuhl mit schwenkbarer Rückenlehne.
US5214360A (en) * 1992-03-13 1993-05-25 Den-Tal-Ez, Inc. Programmable adjustable chair for medical and dental applications
DE4306466A1 (de) * 1992-05-18 1993-11-25 Ulrich Dr Kurze Verfahren und Vorrichtung zur behandlungsgerechten Lagerung eines Patienten
US6106065A (en) 1997-10-24 2000-08-22 Reliance Medical Products, Inc. Examination chair with lifting and tilting mechanism
US6056363A (en) * 1997-12-29 2000-05-02 Maddox; Lee W. Reclining computer chair apparatus
DE29816884U1 (de) * 1998-09-21 1998-12-03 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Elektromotorischer Linearantrieb
DE19853271A1 (de) * 1998-11-18 2000-05-25 Maquet Ag Untersuchungsstuhl
US6814409B2 (en) * 2001-04-12 2004-11-09 A-Dec, Inc. Hydraulic drive system
US6802564B2 (en) * 2001-10-12 2004-10-12 Midmark Corporation Examination and treatment chair
US7163263B1 (en) 2002-07-25 2007-01-16 Herman Miller, Inc. Office components, seating structures, methods of using seating structures, and systems of seating structures
US7246856B2 (en) * 2003-12-05 2007-07-24 Hoveround Corporation Seat positioning and control system
DE102005001877A1 (de) * 2005-01-14 2006-07-27 Deon Ag Möbel, insbesondere Sitzmöbel
JP4483815B2 (ja) * 2006-03-28 2010-06-16 パナソニック電工株式会社 揺動型運動装置
US7802846B2 (en) * 2007-03-19 2010-09-28 Pierre Bellefleur Reclining chair and chassis, frame and kit therefor
US8577711B2 (en) 2008-01-25 2013-11-05 Herman Miller, Inc. Occupancy analysis
CN101509540B (zh) * 2008-02-14 2011-06-15 德昌电机(深圳)有限公司 动力传输装置
US8025336B2 (en) * 2008-10-31 2011-09-27 Midmark Corporation Dental chair
US9603453B2 (en) * 2010-12-29 2017-03-28 Ultra-Mek, Inc. Reclining chair with tilting action to provide heart-rest position
DE102011078469A1 (de) * 2011-06-30 2013-01-03 Sirona Dental Systems Gmbh Behandlungsliege
US9782005B2 (en) 2014-07-25 2017-10-10 Stryker Corporation Medical support apparatus
WO2015106409A1 (fr) * 2014-01-15 2015-07-23 傅建华 Dispositif de déploiement de canapé simple et pratique
US10980692B2 (en) * 2016-08-29 2021-04-20 Mobius Imaging, Llc Table system for medical imaging
US10632037B2 (en) * 2018-02-01 2020-04-28 Medical Technology Industries, Inc. Programmable examination and procedure tables and chairs
CN108309676A (zh) * 2018-02-06 2018-07-24 安徽传质信息科技有限公司 一种牙科诊疗椅
US11140987B2 (en) 2019-02-14 2021-10-12 Deer Solutions LLC Athletic chair with adjustable heating and height
US11779501B2 (en) * 2019-09-17 2023-10-10 Engle Dental Systems, LLC Traverse dental chair and a sensor assembly for monitoring positions thereof

Citations (7)

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Publication number Priority date Publication date Assignee Title
US3302971A (en) * 1964-06-17 1967-02-07 E Quetin Ets Dental chairs
FR2186218A1 (fr) * 1972-05-31 1974-01-11 Siemens Ag
DE2746630A1 (de) * 1977-10-17 1979-04-26 Koepp Elektronik Gmbh Elektrische steuerschaltung zur lageeinstellung eines aerztlichen behandlungsstuhles oder dergleichen
FR2450098A1 (fr) * 1979-02-28 1980-09-26 Philips Nv Support de patient muni d'organes de support pouvant pivoter l'un par rapport a l'autre
DE2941185B1 (de) * 1979-10-11 1980-12-18 Emda Lageeinstellvorrichtung fuer einen zahnaerztlichen Behandlungsstuhl
DE2938330A1 (de) * 1979-09-21 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Hoehenverstellvorrichtung fuer ein zahnaerztliches geraet
EP0100490A2 (fr) * 1982-08-02 1984-02-15 Siemens Aktiengesellschaft Dispositif d'élévation notamment pour fauteuil dentaire

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US3083055A (en) * 1961-03-23 1963-03-26 Charles S Davis Patient chair
US3338632A (en) * 1966-02-09 1967-08-29 Carl T Kleinsorge Reclining chair
US4173372A (en) * 1977-10-11 1979-11-06 Gary Reynolds Dental chair
US4344594A (en) * 1980-05-15 1982-08-17 Sybron Corporation Lift mechanism for dental chair
DE3228853A1 (de) * 1982-08-02 1984-02-09 Siemens AG, 1000 Berlin und 8000 München Zahnaertzlicher patientenstuhl
JPS6214860U (fr) * 1985-07-11 1987-01-29
DE3545446A1 (de) * 1985-12-20 1987-07-02 Kaltenbach & Voigt Hydraulische steuereinrichtung fuer einen behandlungsstuhl
FR2598911B1 (fr) * 1986-05-22 1990-06-08 Direct Usine Salons Fauteuil medical dont le deploiement et la hauteur sont commandes automatiquement de facons independantes
JPS633622A (ja) * 1986-06-23 1988-01-08 松下電工株式会社 電源回路
IT1200176B (it) * 1986-07-18 1989-01-05 Castellini Spa Struttura per poltrone con sedile e schienale mobili, in particolare per uso odontoiatrico

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302971A (en) * 1964-06-17 1967-02-07 E Quetin Ets Dental chairs
FR2186218A1 (fr) * 1972-05-31 1974-01-11 Siemens Ag
DE2746630A1 (de) * 1977-10-17 1979-04-26 Koepp Elektronik Gmbh Elektrische steuerschaltung zur lageeinstellung eines aerztlichen behandlungsstuhles oder dergleichen
FR2450098A1 (fr) * 1979-02-28 1980-09-26 Philips Nv Support de patient muni d'organes de support pouvant pivoter l'un par rapport a l'autre
DE2938330A1 (de) * 1979-09-21 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Hoehenverstellvorrichtung fuer ein zahnaerztliches geraet
DE2941185B1 (de) * 1979-10-11 1980-12-18 Emda Lageeinstellvorrichtung fuer einen zahnaerztlichen Behandlungsstuhl
EP0100490A2 (fr) * 1982-08-02 1984-02-15 Siemens Aktiengesellschaft Dispositif d'élévation notamment pour fauteuil dentaire

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019666A2 (fr) * 1995-11-29 1997-06-05 Siemens Aktiengesellschaft Dispositif de reglage du siege et du dossier a accouplement force d'un fauteuil de dentiste
US5992934A (en) * 1995-11-29 1999-11-30 Sirona Dental Systems Gmbh & Co. Kg Device for adjusting the forcibly coupled seat and back of a dentist chair
WO1997019666A3 (fr) * 1995-11-29 2001-09-13 Siemens Ag Dispositif de reglage du siege et du dossier a accouplement force d'un fauteuil de dentiste
EP1304793A2 (fr) * 2001-10-19 2003-04-23 Okin Gesellschaft für Antriebstechnik MbH & Co. KG Alimentation en tension pour l'entraínement de meuble
EP1304793A3 (fr) * 2001-10-19 2008-02-27 OKIN Gesellschaft für Antriebstechnik mbH Alimentation en tension pour l'entraînement de meuble
WO2007113395A1 (fr) * 2006-04-03 2007-10-11 Lifestand 'vivre Debout' Fauteuil multipositions pour handicape
US8128120B2 (en) 2006-04-03 2012-03-06 Lifestand “Vivre Debout” Multi-position wheelchair for handicapped people

Also Published As

Publication number Publication date
JPH0515300Y2 (fr) 1993-04-22
DE3878566D1 (de) 1993-03-25
EP0373245B1 (fr) 1993-02-17
JPH0284629U (fr) 1990-07-02
US5015035A (en) 1991-05-14

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