EP0902677B1 - Fauteuil de dentiste avce dispositif de reglage du siege et du dossier a accouplement force - Google Patents

Fauteuil de dentiste avce dispositif de reglage du siege et du dossier a accouplement force Download PDF

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Publication number
EP0902677B1
EP0902677B1 EP96945990A EP96945990A EP0902677B1 EP 0902677 B1 EP0902677 B1 EP 0902677B1 EP 96945990 A EP96945990 A EP 96945990A EP 96945990 A EP96945990 A EP 96945990A EP 0902677 B1 EP0902677 B1 EP 0902677B1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
force
roller
transmission element
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 - Lifetime
Application number
EP96945990A
Other languages
German (de)
English (en)
Other versions
EP0902677A1 (fr
Inventor
Hermann Gehrig
Günther Moritz
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.)
Sirona Dental Systems GmbH
Original Assignee
Sirona Dental Systems GmbH
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 Sirona Dental Systems GmbH filed Critical Sirona Dental Systems GmbH
Publication of EP0902677A1 publication Critical patent/EP0902677A1/fr
Application granted granted Critical
Publication of EP0902677B1 publication Critical patent/EP0902677B1/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 a device for positively coupled Adjustment of the seat and backrest of the Chairs according to the preamble of the claim 1.
  • a patient chair with such a device is for example from European patent specification 0 373 245 known. Although the device described there allows to bring the seat into a relatively low end position, take the to tilt the backrest and tilt the Seat relative to the upper part provided relatively much Space.
  • Another patient chair is known from DE-A1 3 018 684, in which the seat cover is divided into a buttocks and thighs load-bearing seat part and one opposite this pivotable lower leg support. So that the lower leg support trained short and with deeply lowered Seat part can be swung down to the vertical can, it contains a telescopic in the longitudinal direction extendable and retractable support.
  • the support part is using a pulley-like arrangement, running over three rollers Rope adjusted along the lower leg support if this with the help of a between the seat part and lower leg support attacking actuator is adjusted.
  • the invention specified in claim 1 is based on the object a device of the type mentioned create a lower, flatter construction of the seat overall, especially the seat support, allowed.
  • the forced coupling of the seat and backrest according to the invention is advantageously by means of a roller chain and three Sprockets reached, one sprocket being the “loose The role of "reverse pulley” and the two other sprockets only to redirect the chain force serve.
  • the entire arrangement is advantageously made so that the backrest is tilted about twice as fast as the seat is tilted. This is achieved in that the pulley-like arrangement the adjustment paths and thus the adjustment speeds between the attachment points the power transmission member, e.g. the roller chain, at the seat end of the backrest on the one hand and on Upper part, on the other hand, in a certain relationship to each other to be brought. By choosing the distances, this can movement ratio mentioned above can be achieved.
  • FIG. 1 shows a basic representation of a dental Side view of the patient chair, in one Position that corresponds to a lying position of a patient and standing Position of a practitioner.
  • the chair top is in the highest position here.
  • Figure 2 shows the upper part of the chair with seat and backrest with the backrest raised. The mechanics for the lower part of the chair is not shown here.
  • FIG. 3 shows an enlarged detail X from FIG. 1 Presentation.
  • the patient chair shown in Figure 1 contains a base part 1 with a scissor-like height adjustment device 2.
  • a scissor-like height adjustment device 245 After this in the aforementioned EP-B1-0 373 245 is described in more detail, this needs in detail not to be explained in more detail. It should only be noted here that one of the two upper support arms 3, 4 (3) is articulated on an upper part designated 5, while the other (4) can be moved in a slide guide 6 in the direction of the arrow is led. The same applies to the two lower ones Poor ends.
  • a seat support 8 is articulated by means of a tilt bearing 7. Fixed to the seat support 8 is the one designated 9 Seat and leg rest.
  • the seat support 8 also includes one Crooked guide 10, in which the front, lower end part 11th the backrest 12, in technical terms often with "sword” designated, is guided.
  • the adjusting device 13 is on the one hand Upper part and on the other hand articulated and effected on the seat support 8 a tilt of the seat about the tilt axis 7.
  • the adjusting device 13, as shown, can be an electromotive Be spindle drive; it is conceivable and within the Invention is, alternatively, a hydraulic or pneumatic drive.
  • the device between the upper part 5 and the end part 11 provided a positively coupled adjustment of the seat and Effect leg rest 9 and the backrest 12 of the chair.
  • the device consists of a pliable, flexible Power transmission member 15 and three guide rollers 16 to 18, that act like a pulley.
  • the power transmission link 15 is with a fixed point 19 on the upper part 5 and attached to the backrest sword 11 with a fixed point 20.
  • the two rollers 17 and 18 serve as guide rollers and are stationary on the upper part 5 while the roller 16 "Loose roll" represents the pulley system and at the bottom End of a fork-like extension 8a of the seat support 8 is stored.
  • FIG. 2 illustrated sitting position explained.
  • the backrest In the figure 2 position shown, the backrest is in a erect position.
  • Seat and leg rest are in a typical sitting position, in which the seat slightly tilted at the front and the leg rest directed obliquely downwards are. In this position is between the attachment point 20 and the guide roller 18 a distance a exists.
  • the end of the power transmission link is between the attachment point 19 and the loose roller 16 a distance b is present.
  • the backrest should be about twice as much can be tilted quickly as the seat and leg rest are tilted becomes.
  • the adjustment movement is initiated by activating the Adjustment device 13.
  • the motor drives the spindle drive over a Spindle up the mother tube.
  • the seat support 8 tilted about the tilt axis 7.
  • the roller 16 moves relatively to the top 5 up; the power transmission link guided around this role 15 is due to the weight of the backrest 12 and the sword 11 tightened.
  • the attachment point 20 moves due to the pulley-like constellation about twice the speed of the upward movement the roller 16 and leaves the sword 11 out through the curved guide 10, slide into the seat support 8 until the lying position shown in Figure 1 is reached.
  • a force transmission member 15 can be particularly advantageous a roller chain are used; the three roles 16 to 18 are then designed as sprockets. Alternatively, you can also a timing belt with corresponding pulleys Flat or V-belts or a cable with corresponding trained roles are used.
  • a special embodiment of the invention provides that Provide parts 15 to 18 twice, for example two Roller chains and six sprockets. Are advantageous the sprockets then in pairs on a common axis arranged. The arrangement is such that the two side by side and independent of each other running chains that run a chain slightly longer is than the other. This will only make one of the two chains loaded, which runs a little longer than the safety chain without Load with. Should the load chain for any reason the second safety chain comes into force. At the same time becomes a safety chain switch due to the load chain break 22 activated, with which the electronics of the chair, in particular the adjustment drive 13 is switched off.
  • FIG 3 shows the safety switch as a detail in enlarged view.
  • the power transmission link 15, for example the roller chain taut curious; excited. It is over a sliding block 23 on the top 5 is tiltable, guided.
  • the backrest 12 opens an object, the sword 11 is easily removed from the Seat support 8 pulled; the chain would no longer be taut his.
  • the sliding block lying on the chain becomes tilted and thus activated the chain switch 22, which in turn switches off the chair electronics.

Claims (5)

  1. Fauteuil de dentisterie pour patient comportant un dispositif de réglage du siège et du dossier du fauteuil avec accouplement forcé, dans lequel le support (8) du siège est articulé sur une partie supérieure (5) de manière à pouvoir basculer autour d'un axe (7) proche du dossier de telle sorte que le support (8) du siège, équipé du siège et de l'appui-jambes (9), bascule vers l'avant autour de l'axe de basculement (7) lorsqu'on incline le dossier (12), et inversement bascule vers l'avant lorsqu'on redresse le dossier, caractérisé en ce que l'extrémité (11) du dossier, qui est située du côté du siège, est guidée dans un guide cintré (10) du support (8) du siège et qu'il est prévu un organe souple et flexible de transmission de force (15), qui est fixé par l'une de ses extrémités en un point de fixation (19) sur la partie supérieure (5) et par son autre extrémité en un point de fixation (20) sur l'extrémité (11) du dossier (12), située du côté du siège, et qui est guidé à la manière d'un moufle par l'intermédiaire de trois rouleaux (16,17,18), parmi lesquels le premier rouleau (16) est tourillonné sur un prolongement (8a) du support (8) du siège de telle sorte qu'un point de fixation (19) de l'organe de transmission de force (15) est séparé par une première distance variable (b) du rouleau (16), que le second rouleau (18), qui est tourillonné sur l'extrémité, située du côté du dossier, de la partie supérieure (5) définit une autre distance variable (a) par rapport à l'autre point de fixation (20) de l'organe de transmission de force (15) sur la partie d'extrémité (11) du dossier (12), et que le troisième rouleau (17) est un rouleau de renvoi situé sur la partie supérieure (5), l'agencement étant tel qu'un raccourcissement de la distance (b) conduit à un allongement de la seconde distance (a) et inversement.
  2. Fauteuil selon la revendication 1, caractérisé en ce que les distances (a) et (b) sont dimensionnées de telle sorte qu'un raccourcissement de la première distance (b) conduit à un allongement de la seconde distance (a) dans le rapport égal à environ 1:2.
  3. Fauteuil selon la revendication 1 ou 2, caractérisé en ce qu'à l'organe de transmission de force (15) est couplé un interrupteur de protection (22) qui est disposé de telle sorte que, lorsque l'organe de transmission de force (15) n'est pas fortement tendu, l'interrupteur débranche un dispositif d'entraínement de réglage (13) pour le siège (9) et/ou le dispositif de réglage en hauteur (2).
  4. Fauteuil selon l'une des revendications 1 à 3, caractérisé en ce que les parties (15 à 18), qui réalisent le couplage forcé, sont prévues en double, et, dans un dispositif, l'organe de transmission de force (15) est réalisé légèrement plus long et par conséquent n'est pas tendu rigidement par rapport à l'autre dispositif.
  5. Fauteuil selon l'une des revendications 1 à 4, caractérisé en ce qu'il est prévu une chaíne à rouleaux en tant qu'organe de transmission de force (15) et des roues à chaíne en tant que rouleaux de guidage ou de renvoi (16,17, 18).
EP96945990A 1995-11-29 1996-11-15 Fauteuil de dentiste avce dispositif de reglage du siege et du dossier a accouplement force Expired - Lifetime EP0902677B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19544545 1995-11-29
DE19544545A DE19544545C1 (de) 1995-11-29 1995-11-29 Vorrichtung zur zwangsgekoppelten Verstellung von Sitz und Rückenlehne eines zahnärztlichen Patientenstuhls
PCT/DE1996/002180 WO1997019666A2 (fr) 1995-11-29 1996-11-15 Dispositif de reglage du siege et du dossier a accouplement force d'un fauteuil de dentiste

Publications (2)

Publication Number Publication Date
EP0902677A1 EP0902677A1 (fr) 1999-03-24
EP0902677B1 true EP0902677B1 (fr) 2000-02-09

Family

ID=7778735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945990A Expired - Lifetime EP0902677B1 (fr) 1995-11-29 1996-11-15 Fauteuil de dentiste avce dispositif de reglage du siege et du dossier a accouplement force

Country Status (5)

Country Link
US (1) US5992934A (fr)
EP (1) EP0902677B1 (fr)
DE (2) DE19544545C1 (fr)
IN (1) IN188528B (fr)
WO (1) WO1997019666A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078469A1 (de) 2011-06-30 2013-01-03 Sirona Dental Systems Gmbh Behandlungsliege

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853271A1 (de) * 1998-11-18 2000-05-25 Maquet Ag Untersuchungsstuhl
US7290836B2 (en) * 2003-08-28 2007-11-06 A-Dec, Inc. Patient chair
US7537069B2 (en) 2004-08-16 2009-05-26 Hill-Rom Services, Inc. Home care equipment system
WO2006023447A2 (fr) 2004-08-16 2006-03-02 Hill-Rom Services, Inc. Fauteuil
DE102005040402B3 (de) * 2005-08-26 2007-05-03 Hanning Elektro-Werke Gmbh & Co. Kg Schwenkantrieb für einen auf einem Untergstell angeordneten Aufbau, vorzugsweise für einen Operationstisch oder einen Zahnarztstuhl
US8388065B2 (en) * 2010-09-07 2013-03-05 Honda Motor Co., Ltd. Vehicle seat
US9603453B2 (en) * 2010-12-29 2017-03-28 Ultra-Mek, Inc. Reclining chair with tilting action to provide heart-rest position
US8936315B2 (en) 2011-10-19 2015-01-20 Reliance Medical Products, Inc. Ophthalmic examination chair having tilt drive assembly
USD680223S1 (en) 2011-10-19 2013-04-16 Reliance Medical Products, Inc. Examination chair
US11140987B2 (en) 2019-02-14 2021-10-12 Deer Solutions LLC Athletic chair with adjustable heating and height
CN111938978A (zh) * 2020-07-23 2020-11-17 李友安 一种用于牙科椅子的防晃动装置
CN113679561A (zh) * 2021-08-06 2021-11-23 奥佳华智能健康科技集团股份有限公司 一种椅架及按摩椅

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US3486789A (en) * 1967-12-28 1969-12-30 Pennsalt Chemicals Corp Adjustable chair
DE2251737B2 (de) * 1972-10-21 1978-04-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Zahnarztlicher Patientenstuhl mit Parallelogrammtragarm
US3873152A (en) * 1974-01-09 1975-03-25 John Garas Adjustable orthopedic lounger
DE3018684A1 (de) * 1980-05-15 1981-11-26 Ritter Ag, 7500 Karlsruhe Patientenstuhl
JPS5866925U (ja) * 1981-10-30 1983-05-07 住友重機械工業株式会社 金型への接続装置
DE3632131C2 (de) * 1986-06-04 2001-12-13 Hartmut S Engel Funktions-Sitzmöbel
FR2627968A1 (fr) * 1988-03-07 1989-09-08 Eurosit Siege articule
EP0373245B1 (fr) * 1988-12-14 1993-02-17 Siemens Aktiengesellschaft Fauteuil de dentiste
FR2671702A1 (fr) * 1991-01-22 1992-07-24 Lavigne Pierre Siege a geometrie variable.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078469A1 (de) 2011-06-30 2013-01-03 Sirona Dental Systems Gmbh Behandlungsliege

Also Published As

Publication number Publication date
US5992934A (en) 1999-11-30
IN188528B (fr) 2002-10-12
WO1997019666A2 (fr) 1997-06-05
DE59604445D1 (de) 2000-03-16
EP0902677A1 (fr) 1999-03-24
WO1997019666A3 (fr) 2001-09-13
DE19544545C1 (de) 1997-01-16

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