EP1265577B1 - Medical or dental treatment chair - Google Patents

Medical or dental treatment chair Download PDF

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Publication number
EP1265577B1
EP1265577B1 EP01925498A EP01925498A EP1265577B1 EP 1265577 B1 EP1265577 B1 EP 1265577B1 EP 01925498 A EP01925498 A EP 01925498A EP 01925498 A EP01925498 A EP 01925498A EP 1265577 B1 EP1265577 B1 EP 1265577B1
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EP
European Patent Office
Prior art keywords
lever
head support
joint
medical
treatment chair
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
EP01925498A
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German (de)
French (fr)
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EP1265577A1 (en
Inventor
Georg Hummler
Reinhold Von Bank
Karlheinz Rapp
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.)
Kaltenbach and Voigt GmbH
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Kaltenbach and Voigt GmbH
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Publication of EP1265577A1 publication Critical patent/EP1265577A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10Parts, details or accessories
    • A61G15/12Rests specially adapted therefor, e.g. for the head or feet
    • A61G15/125Head-rests

Definitions

  • the invention relates to a medical or dental medicine Dental chair with a headrest taking into account different Treatments of the patient is adjustable.
  • a treatment chair of the type specified in the preamble of claim 1 is in the DE 29 32 345 A1 described.
  • this known treatment chair is one Headrest in the middle position by a base joint with the free end of one telescopic support part connected at its other end by a hinge is pivotally connected to a backrest of a treatment chair.
  • a piston-cylinder unit provided at a radial distance from the base joint on the Backrest is articulated and with its other end at the front end of the telescopic support part attacks articulated.
  • the telescopic support part is one Locking device assigned, which allows the telescopic parts to either to lock or release each other. With a second locking device the base joint can either be locked or released.
  • the invention has for its object in a treatment chair after Preamble of claim 1 to improve the support function.
  • a simple design and usability can be achieved.
  • both the intermediate lever and the Headrest levers can be specifically adjusted using the associated adjustment motor, the headrest lever providing a large adjustment range takes a stable position. Due to the positioning of the headrest lever in the entire safety range for the patient improved.
  • the headrest can be adjusted by switching on the Adjustment motors take place in succession or simultaneously. In the latter case, also reduce the response time considerably.
  • Adjusting motors of elongated or rod-shaped construction is particularly good, since it is smaller and more space-efficient Install the construction on the associated lever or have it integrated. This leaves make better use of the adjustment range of the headrest lever and thus enlarge it.
  • Linear actuating motors with one end in one are suitable Effective distance from the pivot axis of the associated swivel joint articulated on the attack one joint part and the other joint part or are supported.
  • the Operating effort to adjust the headrest cushion is low because the Operator only an associated control or a common control needs to operate to the desired or the Switch actuators on or off. It is also possible to have an associated one Train control device so that certain support positions of the Headrest cushions automatically after switching on the adjustment motor (s) a program can be adjusted. This increases the operating effort even further reduced. It is particularly advantageous if the control device is designed such that that the operator can control the control device so that an individual Adjusting the headrest cushion by an appropriate control by the Operator or an adjustment of the headrest cushion according to a program is possible.
  • a further development of the invention according to claim 8 aims at a treatment chair in terms of its suitability for children improve.
  • the headrest can be in one position adjust in which they have a largely transition-free continuation of the base of the shell of the back part.
  • This position is particularly advantageous Child position, which is not only in terms of their small distance from the seat part, but also good for children because of their aligned position with respect to the backrest suitable and ensures an advantageous and safe support of the child's head.
  • the support surface of the headrest can also be trough-shaped, wherein in this form it does not have to extend over its entire length.
  • the trough-shaped form of the support surface is only needed over one of the back parts extend facing partial length of the headrest.
  • the trough In the back facing away End region of the headrest can the trough by a transverse, in particular be rounded bead, in which the trough is preferably oblique or rounded transforms.
  • the main parts of the medical or designated in its entirety with 1 dental treatment chair are in its vertical longitudinal median plane E. preferably position-adjustable seat part 2 with a legrest 3, a backrest 4, the at the rear end of the seat part 2 by a backrest joint 5 with a horizontal joint axis extending transversely to the treatment chair 1 with the Seat part 2 is connected and by a first, not shown in detail Adjustment device around the hinge axis between an upright sitting position and an approximately horizontal lying position adjustable and in the respective adjustment position can be determined by a first locking device, and a headrest 7 with a Base body 8, which by means of one or two in the longitudinal direction of the backrest 4th extending, forming a support part support rods 9 on the backrest 4 adjustable is stored.
  • With 12 is an adjustable first carrier for treatment instruments 13 designated, which are mainly used by the dentist, and with 14 is a adjustable second carrier for treatment instruments 15, which mainly used by an assistant.
  • the headrest 7 by a swivel device 17 in the vertical Longitudinal center plane E of the treatment chair 1 is adjustable and in the respective Pivot position by a second designated in its entirety with 19 Locking device held lockable to the headrest 7 with one on it Front or top pad 21 arranged in a desired support position with respect to a patient's head.
  • the backrest 4 consists of a back base part 4a, which is shown in FIG. 1 only shown joint parts 5a is connected to the backrest joint 5, and a Backrest part 4b, which has a preferably shell-shaped backrest cushion 4c is set. Between the back base part 4a and the backrest part 4b is one hinted guide 6 formed in which the backrest part 4b in the longitudinal direction of the backrest 4 to and fro on the back base part 4a is stored.
  • a first adjustment motor M1 is preferably in rod-shaped design provided with its one, here the Backrest joint 5 facing end is supported on the back base part 4a and with his other, here the backrest joint 5 facing away from the end Backrest part 4b attacks.
  • the adjusting motor M1 preferably has one Electric motor E1 on which its rotational movement in a longitudinal movement converting gear G1 is assigned. This is preferably a spindle drive, the spindle of which is designated S1. Between the electric motor E and the gearbox G1, a reduction gearbox G1a can be provided.
  • the carrier part 16 is in a second arranged in the backrest part 4b, in which Longitudinal direction of the backrest 4 directed longitudinal guide 11 by a second Adjusting motor M2 slidably mounted back and forth.
  • the carrier part 16 is preferably arranged transversely to the vertical longitudinal median plane of the treatment chair 1 flat slider formed to a flat design of the backrest 4 too guarantee.
  • the first servomotor M1 is located on one side next to the Carrier part 16, while the second actuator M2 on the other side next to the Carrier part 16 is arranged.
  • the second adjustment motor M2 is also rod-shaped or elongated design, and it preferably has an electric motor E2, the by a gear converting its rotary motion into a straight-line motion G2 is connected to the carrier part 16.
  • the conversion gearbox G2 is with Embodiment also formed by a spindle drive, the spindle with S2 is designated.
  • the longitudinal guide 11 for the carrier part 16 is by two laterally next to the carrier part 16 longitudinally arranged guide rods 11a, 11b on which the carrier part 16 is held and guided with side bushings 11c, 11d attached to it.
  • the exemplary embodiment is that arranged close to the second adjusting motor M2 Guide rod 11b formed as a spindle S2, which is in screw connection with the as Spindle motor trained sleeve 11d stands.
  • the adjusting motors M1, M2 are arranged outside of the bushings 11c, 11d.
  • the second actuator is M2 connected to the spindle S2 by a belt drive, in particular a toothed belt drive.
  • the pivoting device 17 has an intermediate lever 23, which is on its one End by a first joint 24 with the support part 16 in the vertical Longitudinal center plane is pivotally connected and at its other end by a second joint 25 with a headrest lever 27 in the vertical longitudinal median plane is pivotally connected.
  • the intermediate lever 23 extends from the first joint 24 in an assigned swivel range essentially into that of the backrest 4 opposite direction.
  • the headrest lever 27 is on the head of the the patient facing the treatment chair 1 side of the intermediate lever 23, the intermediate lever 23 and the headrest lever 27 in itself from the figures resulting pivoting areas are pivotable, in which they are parallel to each other extend or enclose a small acute angle between them, which in Direction on the backrest 4 is open (Fig.1 and 3) or a larger one Include backrest 4 towards an open acute angle (Fig. 4).
  • the second joint 25 is preferably arranged at the rear end of the headrest lever 27 so that it in this case extends from the second joint 25 towards the backrest 4 and thus the ends of the levers 23, 27 facing away from the backrest 4 approximately close together.
  • the backrest cushion 21 is on the Side of the headrest lever 27 facing away from the intermediate lever 23.
  • the intermediate lever 23 and the headrest lever 27 are each a so-called wide lever, that is, it consists of two horizontal spaced and upright lever webs 23a, 27a, of which the intermediate lever 23 or both levers closed by a crossbeam 23b which is preferably arranged at the upper edge a rigid lever component are stabilized, the ends of the lever webs 23a can extend freely from the crossbeam 23b.
  • the lever bars 27a of the Headrest lever 27 can by a plate-shaped base part of the Headrest cushion 21 supporting base part to be stabilized on the headrest lever 27 is preferably releasably attached, in particular by manual pressure and Exercise can be clipped on or off. This can be done by one or more Push button connections are used, which are not shown for reasons of simplification.
  • the intermediate lever 23 is by a between this and the support member 16th effective third adjusting motor M3 in the first joint 24 optionally back and forth pivotable.
  • the headrest lever 27 is through one between it and the Intermediate lever 23 effective fourth adjustment motor M4 in the second joint 25 optionally swivels back and forth.
  • the adjusting motors M3, M4 preferably have an elongated or rod-shaped design that is linearly effective in its longitudinal direction is and form push and pull rods, the longitudinal direction of which is essentially in the Longitudinal direction of the associated lever 23,27 is directed.
  • the intermediate lever 23rd assigned adjustment motor M3 is around the joint axis 24a of the joint 24 the offset dimension V1 can be pivoted on the carrier part 16 in the pivoting plane supported, with its other end at a larger effective distance from the joint 24 also pivots on the intermediate lever 23, preferably in the second joint 25.
  • the offset dimension V1 is preferably facing away from the headrest link 27 Side directed.
  • the adjustment motor M4 assigned to the headrest link 27 with respect to the hinge axis 25a of the second hinge 25 transversely by the offset dimension V2 offset supported on the intermediate lever 23, with its other end in one larger effective distance from the joint 25 articulated to the headrest lever 27 is, preferably in the end region facing the backrest 4.
  • the Headrest lever 27 is preferably an angular lever with a transverse lever arm 27c, which is assigned to the second joint 25 End area to the side facing the intermediate lever 23 towards an angle or protrudes curved and at its free end in the second joint 25 with the Intermediate lever 23 is connected.
  • the intermediate lever 23 has the second End region facing joint 25 has a transversely projecting lever arm 23c which extends extends to the side facing the headrest cushion 21 and is articulated with the associated end of the actuator M4 is connected.
  • the liaison offices for the Adjusting motors M3, M4 are preferably through joints 31, 32, 33 with hinge pins formed, each a hinge part of the interconnecting parts in hinge eyes by grasp.
  • each two lever arms 23c, 27c which have a transverse spacing from one another and which can be formed by extensions of the lever webs 23a, 27a.
  • the Adjusting motors M3, M4 are preferably between the lever webs 23a, 27a arranged, whereby a narrow or low design can be achieved.
  • the Length of the adjusting motors M3, M4 can essentially be the length of the levers 23, 27 correspond.
  • the adjustment motors M3, M4 can be operated by hydraulic or pneumatic piston-cylinder units be formed or have electric motors E3, E4, each of which a gearbox G3 converting its rotary movement into a longitudinal movement, G4 is assigned, preferably a spindle drive, the spindle S3, S4 of which is part of the can form two telescopic servomotor parts.
  • switching element e.g. on a control unit or foot switch, with which the operator can optionally switch the adjustment motors M3, M4 on and off can.
  • the operator can optionally switch the adjustment motors M3, M4 on and off can.
  • the headrest 7 has a cup-shaped or trough-shaped shape transverse to the swivel plane Head support surface 34, which face at least on one of the backrest 4 Longitudinal section extends substantially straight. In the backrest 4 facing away Area, the head support surface 34 can run out, as a result of which in the associated end area arranged cross bead 35 of the cushion 21 can be formed.
  • the headrest 7 can be adjusted into a child position shown in FIG. 3, in which pushed the headrest cushion 21 directly or close to the backrest cushion 4c is.
  • the head support surface 34 is substantially aligned with the Base of the shell or with the back support surface 36 of the backrest 4 Head support surface 34 a largely transition-free continuation of the bottom of the shell Backrest 4, which preferably also in the sense of a transverse to the swivel plane Shell is trough-shaped.
  • the Base of the backrest 4 and base of the headrest 7 together, making the head of a child on the dental chair beneficial is supported.
  • due to the fact that it extends at least over a longitudinal section straight extending head support surface 34 and the other due to the setting of the Distance of the back surface part 4b from the backrest joint 5 can also be children of different sizes achieve an advantageous support of the head.
  • the backrest 4 preferably has a recess 37 at its free end, into which the headrest 7 can be moved, in particular for the child position
  • the four adjustment motors M1 to M4 can be used by any dentist required position can be achieved with all required types of treatment. So is it is possible to choose the ideal one for different types of treatment and different people To reach the setting of the treatment chair 1.
  • the child position according to Fig. 3 and an increased round back position can thus be adjusted by motor.
  • the adjustment motors are programmed by a program control so that the Headrest movements and the movement of the backrest 4 the anatomical Movements of the patient are adjusted. That is, at times two, three or four Vertical motors work simultaneously and perform different movement steps.
  • each of the four adjustment motors can be activated individually using a switch and thus the ideal head / back position can be achieved.

Description

Die Erfindung bezieht sich auf einen medizinischen oder dentalmedizinischen Behandlungsstuhl mit einer Kopfstütze, die unter Berücksichtigung unterschiedlicher Behandlungen des Patienten einstellbar ist.The invention relates to a medical or dental medicine Dental chair with a headrest taking into account different Treatments of the patient is adjustable.

Es ist bekannt, für eine solche Einstellung wenigstens einen motorischen Antrieb vorzusehen, der der Kopfstütze zugeordnet ist. Bei einem motorischen Antrieb ist die Kopfstütze in der eingestellten Stellung aufgrund der Selbsthemmung des motorischen Antriebs gegen eine ungewollte Verstellung positioniert. Zwecks Verringerung des maschinellen Aufwandes sind aber auch manuell verstellbare Einstellvorrichtungen für die Kopfstütze entwickelt worden. Hierbei ist es erforderlich, die Kopfstütze in der jeweils eingestellten Position durch eine Feststellvorrichtung gegen eine ungewollte Verstellung zu positionieren. Zum Stand der Technik wird verwiesen auf DE 82 07 541 U1, DE 296 20 801 U1, EP 0 701 806 A1 und EP 0 673 633 A2.It is known for at least one motor drive for such an adjustment to be provided, which is assigned to the headrest. With a motorized drive it is Headrest in the set position due to the self-locking of the motor Drive positioned against an unwanted adjustment. In order to reduce the mechanical expenditure are also manually adjustable setting devices for the headrest has been developed. This requires the headrest in the each set position by a locking device against an unwanted Position adjustment. With regard to the prior art, reference is made to DE 82 07 541 U1, DE 296 20 801 U1, EP 0 701 806 A1 and EP 0 673 633 A2.

Ein Behandlungsstuhl der im Oberbegriff des Anspruches 1 angegebenen Art ist in der DE 29 32 345 A1 beschrieben. Bei diesem bekannten Behandlungsstuhl ist eine Kopfstütze in mittlerer Position durch ein Basisgelenk mit dem freien Ende eines teleskopierbaren Stützteils verbunden, das an seinem anderen Ende durch ein Gelenk schwenkbar mit einer Rückenlehne eines Behandlungsstuhls verbunden ist. Zum Verschwenken des teleskopierbaren Stützteils in seinem Basisgelenk ist eine Kolben-Zylinder-Einheit vorgesehen, die in einem radialen Abstand vom Basisgelenk an der Rückenlehne angelenkt ist und mit ihrem anderen Ende am vorderen Ende des teleskopierbaren Stützteils gelenkig angreift. Dem teleskopierbaren Stützteil ist eine Verrastungsvorrichtung zugeordnet, die es ermöglicht, die Teleskopteile wahlweise an einander zu verrasten oder freizugeben. Mit einer zweiten Verrastungsvorrichtung läßt sich das Basisgelenk wahlweise verstarren oder freigeben. Bei diesem bekannten Behandlungsstuhl ist es möglich, je nach Einschaltung der ersten oder zweiten Verrastungsvorrichtung die Kopfstütze durch eine entsprechende Beaufschlagung der Kolben-Zylindeeinheit aus- oder einzufahren oder um die Gelenkachse des Basisgelenks zu schwenken, wobei die Kopfstütze selbst in dem sie mit dem teleskopierbaren Stützteil verbindenden Gelenk frei schwenkbar ist. Diese bekannte Ausgestaltung ist aufwendig und zwar sowohl bezüglich des Bauaufwandes als auch des Bedienungsaufwandes. Außerdem ist die Stützfunktion unbefriedigend.A treatment chair of the type specified in the preamble of claim 1 is in the DE 29 32 345 A1 described. In this known treatment chair is one Headrest in the middle position by a base joint with the free end of one telescopic support part connected at its other end by a hinge is pivotally connected to a backrest of a treatment chair. To the Swiveling the telescopic support part in its base joint is a piston-cylinder unit provided at a radial distance from the base joint on the Backrest is articulated and with its other end at the front end of the telescopic support part attacks articulated. The telescopic support part is one Locking device assigned, which allows the telescopic parts to either to lock or release each other. With a second locking device the base joint can either be locked or released. In this well-known Dental chair is possible, depending on the activation of the first or second Locking device the headrest by a corresponding action on the Extend or retract the piston-cylinder unit or around the joint axis of the base joint to pivot, the headrest itself in which it can be extended with the telescopic Supporting part connecting joint is freely pivotable. This known configuration is complex, both in terms of construction costs and Operating expenses. In addition, the support function is unsatisfactory.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Behandlungsstuhl nach dem Oberbegriff des Anspruches 1 die Stützfunktion zu verbessern. Außerdem soll eine einfache Bauweise und Bedienbarkeit erreicht werden. The invention has for its object in a treatment chair after Preamble of claim 1 to improve the support function. In addition, a simple design and usability can be achieved.

Diese Aufgabe wird durch die Merkmale des Anspruches 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.This object is solved by the features of claim 1. advantageous Developments of the invention are described in the subclaims.

Bei der erfindungsgemäßen Ausgestaltung ist sowohl der Zwischenhebel als auch der Kopfstützenhebel jeweils durch den zugehörigen Verstellmotor gezielt einstellbar, wobei der Kopfstützenhebel bei Gewährleistung eines großen Verstellbereichs eine stabile Position einnimmt. Aufgrund der Positionierung des Kopfstützenhebels im gesamten großen Verstellbereich wird die Abstützungssicherheit für den Patienten verbessert. Die Einstellung der Kopfstütze kann durch ein Einschalten der Verstellmotoren nacheinander oder gleichzeitig erfolgen. Im letzteren Fall läßt sich auch die Einstellzeit beträchtlich reduzieren.In the embodiment according to the invention, both the intermediate lever and the Headrest levers can be specifically adjusted using the associated adjustment motor, the headrest lever providing a large adjustment range takes a stable position. Due to the positioning of the headrest lever in the entire safety range for the patient improved. The headrest can be adjusted by switching on the Adjustment motors take place in succession or simultaneously. In the latter case, also reduce the response time considerably.

Für die erfindungsgemäße Ausgestaltung eignen sich Verstellmotoren länglicher bzw. stangenförmiger Bauweise besonders gut, da sie sich bei kleiner und raumgünstiger Bauweise an den zugehörigen Hebel anbauen oder integrieren lassen. Hierdurch läßt sich der Verstellbereich des Kopfstützenhebels besser ausnutzen und somit vergrößern. Es eignen sich linear wirksame Verstellmotoren, die mit ihrem einen Ende in einem Wirkabstand von der Schwenkachse des zugehörigen Schwenkgelenks gelenkig an dem einen Gelenkteil und am anderen Gelenkteil angreifen bzw. abgestützt sind. Der Bedienungsaufwand zum Verstellen des Kopfstützenpolsters ist gering, da die Bedienungsperson lediglich ein jeweils zugehöriges Steuerelement oder ein gemeinsames Steuerelement zu betätigen braucht, um den gewünschten oder die Verstellmotoren ein- oder abzuschalten. Es ist auch möglich, eine zugehörige Steuereinrichtung so auszubilden, daß bestimmte Stützstellungen des Kopfstützenpolsters nach Einschaltung des bzw. der Verstellmotoren selbsttätig nach einem Programm verstellt werden. Hierdurch wird der Bedienungsaufwand noch weiter verringert. Besonders vorteilhaft ist es, wenn die Steuereinrichtung so ausgebildet ist, daß die Bedienungsperson die Steuereinrichtung so steuern kann, daß ein individuelles Verstellen des Kopfstützenpolsters durch eine entsprechende Ansteuerung durch die Bedienungsperson oder ein Verstellen des Kopfstützenpolsters nach einem Programm möglich ist.Adjusting motors of elongated or rod-shaped construction is particularly good, since it is smaller and more space-efficient Install the construction on the associated lever or have it integrated. This leaves make better use of the adjustment range of the headrest lever and thus enlarge it. Linear actuating motors with one end in one are suitable Effective distance from the pivot axis of the associated swivel joint articulated on the attack one joint part and the other joint part or are supported. The Operating effort to adjust the headrest cushion is low because the Operator only an associated control or a common control needs to operate to the desired or the Switch actuators on or off. It is also possible to have an associated one Train control device so that certain support positions of the Headrest cushions automatically after switching on the adjustment motor (s) a program can be adjusted. This increases the operating effort even further reduced. It is particularly advantageous if the control device is designed such that that the operator can control the control device so that an individual Adjusting the headrest cushion by an appropriate control by the Operator or an adjustment of the headrest cushion according to a program is possible.

Eine Weiterbildung der Erfindung gemäß Anspruch 8 bezweckt, einen Behandlungsstuhl hinsichtlich seiner Eignung für Kinder zu verbessern. A further development of the invention according to claim 8 aims at a treatment chair in terms of its suitability for children improve.

Bei der Ausgestaltung nach Anspruch 8 läßt sich die Kopfstütze in eine Position verstellen, in der sie eine weitgehend übergangsfreie Fortsetzung des Schalengrundes des Rückenteils bildet. Diese Position zeichnet sich als besonders vorteilhafte Kinderstellung aus, die sich nicht nur bezüglich ihres geringen Abstands vom Sitzteil, sondern auch wegen ihrer fluchtenden Lage bezüglich der Rückenlehne für Kinder gut eignet und eine vorteilhafte und sichere Abstützung des Kinderkopfes gewährleistet. Dabei kann die Stützfläche der Kopfstütze ebenfalls muldenförmig geformt sein, wobei sie sich in dieser Form nicht über ihre gesamte Länge erstrecken muß. Die muldenförmige Form der Stütxfläche braucht sich nur über eine dem Rückenteil zugewandte Teillänge der Kopfstütze erstrecken. In dem dem Rückenteil abgewandten Endbereich der Kopfstütze kann die Mulde durch einen querverlaufenden, insbesondere gerundeten Wulst begrenzt sein, in dem die Mulde vorzugsweise schräg oder gerundet übergeht.In the embodiment according to claim 8, the headrest can be in one position adjust in which they have a largely transition-free continuation of the base of the shell of the back part. This position is particularly advantageous Child position, which is not only in terms of their small distance from the seat part, but also good for children because of their aligned position with respect to the backrest suitable and ensures an advantageous and safe support of the child's head. The support surface of the headrest can also be trough-shaped, wherein in this form it does not have to extend over its entire length. The trough-shaped form of the support surface is only needed over one of the back parts extend facing partial length of the headrest. In the back facing away End region of the headrest can the trough by a transverse, in particular be rounded bead, in which the trough is preferably oblique or rounded transforms.

Nachfolgend werden die Erfindung und weitere durch sie erzielbare Vorteile anhand von bevorzugten Ausgestaltungen näher erläutert. Es zeigt

Fig. 1
einen erfindungsgemäßen Behandlungsstuhl in der Seitenansicht;
Fig. 2
ein Rückenteil bzw. eine Rückenlehne und eine Kopfstütze des Behandlungsstuhls in perspektivischer Ansicht von oben;
Fig. 3
die Kopfstütze des Behandlungsstuhls in vergrößerter Darstellung in der Seitenansicht;
Fig. 4
die Kopfstütze in einer etwas vergrößerten Darstellung und in ihrer ausgeschwenkten Stützstellung.
The invention and further advantages which can be achieved by means of preferred configurations are explained in more detail below. It shows
Fig. 1
a dental chair according to the invention in side view;
Fig. 2
a back part or a backrest and a headrest of the treatment chair in a perspective view from above;
Fig. 3
the headrest of the treatment chair in an enlarged view in side view;
Fig. 4
the headrest in a somewhat enlarged representation and in its swung out support position.

Die Hauptteile des in seiner Gesamtheit mit 1 bezeichneten ärztlichen oder zahnärztlichen Behandlungsstuhls sind ein in seiner vertikalen Längsmittelebene E vorzugsweise lageeinstellbares Sitzteil 2 mit einer Beinstütze 3, eine Rückenlehne 4, die am hinteren Ende des Sitzteils 2 durch ein Rückenlehnengelenk 5 mit einer horizontalen, sich quer zum Behandlungsstuhl 1 erstreckenden Gelenkachse mit dem Sitzteil 2 verbunden ist und durch eine im einzelnen nicht dargestellte erste Einstellvorrichtung um die Gelenkachse zwischen einer aufrechten Sitzposition und einer etwa horizontalen Liegeposition verstellbar und in der jeweiligen Verstellposition durch eine erste Feststellvorrichtung feststellbar ist, und eine Kopfstütze 7 mit einem Basiskörper 8, die mittels einer oder zwei in Längsrichtung der Rückenlehne 4 verlaufenden, ein Trägerteil bildenden Tragstangen 9 an der Rückenlehne 4 verstellbar gelagert ist. Mit 12 ist ein verstellbarer erster Träger für Behandlungsinstrumente 13 bezeichnet, die hauptsächlich vom Zahnarzt benutzt werden, und mit 14 ist ein verstellbarer zweiter Träger für Behandlungsinstrumente 15 bezeichnet, die hauptsächlich von einer Hilfsperson benutzt werden.The main parts of the medical or designated in its entirety with 1 dental treatment chair are in its vertical longitudinal median plane E. preferably position-adjustable seat part 2 with a legrest 3, a backrest 4, the at the rear end of the seat part 2 by a backrest joint 5 with a horizontal joint axis extending transversely to the treatment chair 1 with the Seat part 2 is connected and by a first, not shown in detail Adjustment device around the hinge axis between an upright sitting position and an approximately horizontal lying position adjustable and in the respective adjustment position can be determined by a first locking device, and a headrest 7 with a Base body 8, which by means of one or two in the longitudinal direction of the backrest 4th extending, forming a support part support rods 9 on the backrest 4 adjustable is stored. With 12 is an adjustable first carrier for treatment instruments 13 designated, which are mainly used by the dentist, and with 14 is a adjustable second carrier for treatment instruments 15, which mainly used by an assistant.

Die sich in der Längsrichtung der Rückenlehne 4 erstreckenden Tragstangen 9, die verstellbar mit der Rückenlehne 4 verbunden sind, bilden ein Kopfstützen-Trägerteil 16. An diesem ist die Kopfstütze 7 durch eine Schwenkvorrichtung 17 in der vertikalen Längsmittelebene E des Behandlungsstuhls 1 verstellbar und in der jeweiligen Schwenkposition durch eine in ihrer Gesamtheit mit 19 bezeichnete zweite Feststellvorrichtung feststellbar gehalten, um die Kopfstütze 7 mit einem an ihrer Vorder- bzw. Oberseite angeordneten Polster 21 in einer gewünschten Stützposition bezüglich des Kopfes eines Patienten einzustellen.The support rods 9, which extend in the longitudinal direction of the backrest 4, are adjustably connected to the backrest 4, form a headrest support part 16. On this, the headrest 7 by a swivel device 17 in the vertical Longitudinal center plane E of the treatment chair 1 is adjustable and in the respective Pivot position by a second designated in its entirety with 19 Locking device held lockable to the headrest 7 with one on it Front or top pad 21 arranged in a desired support position with respect to a patient's head.

Die Rückenlehne 4 besteht aus einem Rückenbasisteil 4a, das durch nur in Fig. 1 dargestellte Gelenkteile 5a mit dem Rückenlehnengelenk 5 verbunden ist, und einem Rückenlehnenteil 4b, das mit einem vorzugsweise schalenförmigen Rückenlehnenpolster 4c gesetzt ist. Zwischen dem Rückenbasisteil 4a und dem Rückenlehnenteil 4b ist eine andeutungsweise dargestellte Führung 6 ausgebildet, in der das Rückenlehnenteil 4b in der Längsrichtung der Rückenlehne 4 hin und her verschiebbar am Rückenbasisteil 4a gelagert ist. Zum Verstellen ist ein erster Verstellmotor M1 vorzugsweise in stabförmiger Bauweise vorgesehen, der mit seinem einen, hier dem Rückenlehnengelenk 5 zugewandten Ende am Rückenbasisteil 4a abgestützt ist und mit seinem anderen, hier dem Rückenlehnengelenk 5 abgewandten Ende am Rückenlehnenteil 4b angreift. Zur Verbindung des Verstellmotors M1 mit dem Rückenbasisteil 4a und dem Rückenlehnenteil 4b sind an diesen Teilen befestigte Lagerteile L1, L2 vorgesehen. Der Verstellmotor M1 weist vorzugsweise einen Elektromotor E1 auf, dem ein seine Drehbewegung in eine Längsbewegung umwandelndes Getriebe G1 zugeordnet ist. Hierbei handelt es sich vorzugsweise um einen Spindeltrieb, dessen Spindel mit S1 bezeichnet ist. Zwischen dem Elektromotor E und dem Getriebe G1 kann ein Untersetzungsgetriebe G1a vorgesehen sein.The backrest 4 consists of a back base part 4a, which is shown in FIG. 1 only shown joint parts 5a is connected to the backrest joint 5, and a Backrest part 4b, which has a preferably shell-shaped backrest cushion 4c is set. Between the back base part 4a and the backrest part 4b is one hinted guide 6 formed in which the backrest part 4b in the longitudinal direction of the backrest 4 to and fro on the back base part 4a is stored. For adjustment, a first adjustment motor M1 is preferably in rod-shaped design provided with its one, here the Backrest joint 5 facing end is supported on the back base part 4a and with his other, here the backrest joint 5 facing away from the end Backrest part 4b attacks. To connect the actuator M1 with the Back base part 4a and backrest part 4b are attached to these parts Bearing parts L1, L2 provided. The adjusting motor M1 preferably has one Electric motor E1 on which its rotational movement in a longitudinal movement converting gear G1 is assigned. This is preferably a spindle drive, the spindle of which is designated S1. Between the electric motor E and the gearbox G1, a reduction gearbox G1a can be provided.

Das Trägerteil 16 ist in einer im Rückenlehnenteil 4b angeordneten zweiten, in der Längsrichtung der Rückenlehne 4 gerichteten Längsführung 11 durch einen zweiten Verstellmotor M2 hin und her schiebbar gelagert. Das Trägerteil 16 ist vorzugsweise durch einen quer zur vertikalen Längsmittelebene des Behandlungsstuhls 1 angeordneten flachen Schieber gebildet, um eine flache Bauweise der Rückenlehne 4 zu gewährleisten. Der erste Verstellmotor M1 befindet sich auf der einen Seite neben dem Trägerteil 16, während der zweite Verstellmotor M2 auf der anderen Seite neben dem Trägerteil 16 angeordnet ist. Auch der zweite Verstellmotor M2 ist von stabförmiger bzw. länglicher Bauweise, und er weist vorzugsweise einen Elektromotor E2 auf, der durch ein seine Drehbewegung in eine geradlinige Bewegung umwandelndes Getriebe G2 mit dem Trägerteil 16 verbunden ist. Das Umwandlungsgetriebe G2 ist beim Ausführungsbeispiel ebenfalls durch einen Spindeltrieb gebildet, dessen Spindel mit S2 bezeichnet ist.The carrier part 16 is in a second arranged in the backrest part 4b, in which Longitudinal direction of the backrest 4 directed longitudinal guide 11 by a second Adjusting motor M2 slidably mounted back and forth. The carrier part 16 is preferably arranged transversely to the vertical longitudinal median plane of the treatment chair 1 flat slider formed to a flat design of the backrest 4 too guarantee. The first servomotor M1 is located on one side next to the Carrier part 16, while the second actuator M2 on the other side next to the Carrier part 16 is arranged. The second adjustment motor M2 is also rod-shaped or elongated design, and it preferably has an electric motor E2, the by a gear converting its rotary motion into a straight-line motion G2 is connected to the carrier part 16. The conversion gearbox G2 is with Embodiment also formed by a spindle drive, the spindle with S2 is designated.

Die Längsführung 11 für das Trägerteil 16 ist durch zwei seitlich neben dem Trägerteil 16 längs angeordnete Führungsstangen 11a, 11b gebildet, auf denen das Trägerteil 16 mit an ihm seitlich befestigten Laufbuchsen 11c, 11d gehalten und geführt ist. Beim Ausführungsbeispiel ist die den zweiten Verstellmotor M2 nahe angeordnete Führungsstange 11b als Spindel S2 ausgebildet, die in Schraubverbindung mit der als Spindelmotor ausgebildeten Laufbuchse 11d steht. Die Verstellmotoren M1, M2 sind außen von den Laufbuchsen 11c, 11d angeordnet. Der zweite Verstellmotor M2 ist durch einen Riementrieb, insbesondere Zahnriementrieb mit der Spindel S2 verbunden.The longitudinal guide 11 for the carrier part 16 is by two laterally next to the carrier part 16 longitudinally arranged guide rods 11a, 11b on which the carrier part 16 is held and guided with side bushings 11c, 11d attached to it. At the The exemplary embodiment is that arranged close to the second adjusting motor M2 Guide rod 11b formed as a spindle S2, which is in screw connection with the as Spindle motor trained sleeve 11d stands. The adjusting motors M1, M2 are arranged outside of the bushings 11c, 11d. The second actuator is M2 connected to the spindle S2 by a belt drive, in particular a toothed belt drive.

Die Schwenkvorrichtung 17 weist einen Zwischenhebel 23 auf, der an seinem einen Ende durch ein erstes Gelenk 24 mit dem Trägerteil 16 in der vertikalen Längsmittelebene schwenkbar verbunden ist und der an seinem anderen Ende durch ein zweites Gelenk 25 mit einem Kopfstützenhebel 27 in der vertikalen Längsmittelebene schwenkbar verbunden ist. Der Zwischenhebel 23 erstreckt sich vom ersten Gelenk 24 in einem zugeordneten Schwenkbereich im wesentlichen in die der Rückenlehne 4 abgewandte Richtung. Der Kopfstützenhebel 27 befindet sich auf der dem Kopf des auf dem Behandlungsstuhl 1 befindlichen Patienten zugewandten Seite des Zwischenhebels 23, wobei der Zwischenhebel 23 und der Kopfstützenhebel 27 in sich aus den Figuren ergebenden Schwenkbereichen schwenkbar sind, in denen sie sich parallel zueinander erstrecken oder einen kleinen spitzen Winkel zwischen sich einschließen, der in Richtung auf die Rückenlehne 4 offen ist (Fig.1 und 3) oder einen größeren, zur Rückenlehne 4 hin offenen spitzen Winkel einschließen (Fig. 4). Das zweite Gelenk 25 ist vorzugsweise am hinteren Ende des Kopfstützenhebels 27 angeordnet, so daß dieser sich in diesem Fall vom zweiten Gelenk 25 in Richtung auf die Rückenlehne 4 erstreckt und somit die der Rückenlehne 4 abgewandten Enden der Hebel 23, 27 etwa miteinander abschließen. Das Rückenlehnenpolster 21 befindet sich auf der den Zwischenhebel 23 abgewandten Seite des Kopfstützenhebels 27.The pivoting device 17 has an intermediate lever 23, which is on its one End by a first joint 24 with the support part 16 in the vertical Longitudinal center plane is pivotally connected and at its other end by a second joint 25 with a headrest lever 27 in the vertical longitudinal median plane is pivotally connected. The intermediate lever 23 extends from the first joint 24 in an assigned swivel range essentially into that of the backrest 4 opposite direction. The headrest lever 27 is on the head of the the patient facing the treatment chair 1 side of the intermediate lever 23, the intermediate lever 23 and the headrest lever 27 in itself from the figures resulting pivoting areas are pivotable, in which they are parallel to each other extend or enclose a small acute angle between them, which in Direction on the backrest 4 is open (Fig.1 and 3) or a larger one Include backrest 4 towards an open acute angle (Fig. 4). The second joint 25 is preferably arranged at the rear end of the headrest lever 27 so that it in this case extends from the second joint 25 towards the backrest 4 and thus the ends of the levers 23, 27 facing away from the backrest 4 approximately close together. The backrest cushion 21 is on the Side of the headrest lever 27 facing away from the intermediate lever 23.

Der Zwischenhebel 23 und der Kopfstützenhebel 27 ist jeweils ein sog. Breithebel, d.h., er besteht aus zwei einen horizontalen Abstand voneinander aufweisenden und hochkant angeordneten Hebelstegen 23a, 27a, von denen der Zwischenhebel 23 oder beide Hebel durch eine vorzugsweise am oberen Rand angeordnete Traverse 23b zu einem starren Hebelbauteil stabilisiert sind, wobei die Enden der Hebelstege 23a sich frei abstehend von der Traverse 23b erstrecken können. Die Hebelstege 27a des Kopfstützenhebels 27 können durch ein plattenförmiges Basisteil des das Kopfstützenpolster 21 tragenden Basisteils stabilisiert sein, das am Kopfstützenhebel 27 vorzugsweise lösbar befestigt ist, insbesondere durch manuelle Druck- und Zugausübung an- bzw. abclipsbar ist. Hierzu können eine oder mehrere Druckknopfverbindungen dienen, die aus Vereinfachungsgründen nicht dargestellt sind.The intermediate lever 23 and the headrest lever 27 are each a so-called wide lever, that is, it consists of two horizontal spaced and upright lever webs 23a, 27a, of which the intermediate lever 23 or both levers closed by a crossbeam 23b which is preferably arranged at the upper edge a rigid lever component are stabilized, the ends of the lever webs 23a can extend freely from the crossbeam 23b. The lever bars 27a of the Headrest lever 27 can by a plate-shaped base part of the Headrest cushion 21 supporting base part to be stabilized on the headrest lever 27 is preferably releasably attached, in particular by manual pressure and Exercise can be clipped on or off. This can be done by one or more Push button connections are used, which are not shown for reasons of simplification.

Der Zwischenhebel 23 ist durch einen zwischen diesem und dem Trägerteil 16 wirksamen dritten Verstellmotor M3 im ersten Gelenk 24 wahlweise hin und her schwenkbar. Der Kopfstützenhebel 27 ist durch einen zwischen ihm und dem Zwischenhebel 23 wirksamen vierten Verstellmotor M4 im zweiten Gelenk 25 wahlweise hin und her schwenkbar. Die Verstellmotoren M3, M4, weisen vorzugsweise eine längliche bzw. stabförmige Bauform auf, die in ihrer Längsrichtung linear wirksam ist und Schub- und Zugstangen bilden, deren Längsrichtung im wesentlichen in der Längsrichtung des zugehörigen Hebels 23,27 gerichtet ist. Der dem Zwischenhebel 23 zugeordnete Verstellmotor M3 ist bezüglich der Gelenkachse 24a des Gelenks 24 um das Versatzmaß V1 quer versetzt am Trägerteil 16 in der Schwenkebene schwenkbar abgestützt, wobei sein anderes Ende in einem größeren Wirkabstand vom Gelenk 24 ebenfalls schwenkbar am Zwischenhebel 23 angreift, vorzugsweise im zweiten Gelenk 25. Das Versatzmaß V1 ist vorzugsweise zur dem Kopfstützenlenker 27 abgewandten Seite gerichtet. Der dem Kopfstützenlenker 27 zugeordnete Verstellmotor M4 ist bezüglich der Gelenkachse 25a des zweiten Gelenks 25 um das Versatzmaß V2 quer versetzt am Zwischenhebel 23 gelenkig abgestützt, wobei sein anderes Ende in einem größeren Wirkabstand vom Gelenk 25 gelenkig mit dem Kopfstützenhebel 27 verbunden ist, vorzugsweise in dessen der Rückenlehne 4 zugewandten Endbereich. Der Kopfstützenhebel 27 ist vorzugsweise ein winkelförmiger Hebel mit einem querverlaufenden Hebelarm 27c, der in seinem dem zweiten Gelenk 25 zugeordneten Endbereich zur dem Zwischenhebel 23 zugewandten Seite hin winkelförmig oder gekrümmt absteht und an seinem freien Ende im zweiten Gelenk 25 mit dem Zwischenhebel 23 verbunden ist. Der Zwischenhebel 23 weist in seinem dem zweiten Gelenk 25 zugewandten Endbereich einen quer abstehenden Hebelarm 23c auf, der sich zur dem Kopfstützenpolster 21 zugewandten Seite hin erstreckt und gelenkig mit dem zugehörigen Ende des Verstellmotors M4 verbunden ist. Die Verbindungsstellen für die Verstellmotoren M3 , M4 sind vorzugsweise durch Gelenke 31,32,33 mit Gelenkbolzen gebildet, die jeweils ein Gelenkteil der miteinander verbindenden Teile in Gelenkaugen durchfassen. Beim Ausführungsbeispiel mit vorbeschriebenen Breithebeln sind jeweils zwei einen Querabstand voneinander aufweisende Hebelarme 23c, 27c vorhanden, die durch Verlängerungen der Hebelstege 23a, 27a gebildet sein können. Die Verstellmotoren M3, M4 sind vorzugsweise zwischen den Hebelstegen 23a, 27a angeordnet, wodurch sich eine schmale bzw. niedrige Bauweise erreichen läßt. Die Länge der Verstellmotoren M3, M4 kann im wesentlichen der Länge der Hebel 23,27 entsprechen.The intermediate lever 23 is by a between this and the support member 16th effective third adjusting motor M3 in the first joint 24 optionally back and forth pivotable. The headrest lever 27 is through one between it and the Intermediate lever 23 effective fourth adjustment motor M4 in the second joint 25 optionally swivels back and forth. The adjusting motors M3, M4 preferably have an elongated or rod-shaped design that is linearly effective in its longitudinal direction is and form push and pull rods, the longitudinal direction of which is essentially in the Longitudinal direction of the associated lever 23,27 is directed. The intermediate lever 23rd assigned adjustment motor M3 is around the joint axis 24a of the joint 24 the offset dimension V1 can be pivoted on the carrier part 16 in the pivoting plane supported, with its other end at a larger effective distance from the joint 24 also pivots on the intermediate lever 23, preferably in the second joint 25. The offset dimension V1 is preferably facing away from the headrest link 27 Side directed. The adjustment motor M4 assigned to the headrest link 27 with respect to the hinge axis 25a of the second hinge 25 transversely by the offset dimension V2 offset supported on the intermediate lever 23, with its other end in one larger effective distance from the joint 25 articulated to the headrest lever 27 is, preferably in the end region facing the backrest 4. The Headrest lever 27 is preferably an angular lever with a transverse lever arm 27c, which is assigned to the second joint 25 End area to the side facing the intermediate lever 23 towards an angle or protrudes curved and at its free end in the second joint 25 with the Intermediate lever 23 is connected. The intermediate lever 23 has the second End region facing joint 25 has a transversely projecting lever arm 23c which extends extends to the side facing the headrest cushion 21 and is articulated with the associated end of the actuator M4 is connected. The liaison offices for the Adjusting motors M3, M4 are preferably through joints 31, 32, 33 with hinge pins formed, each a hinge part of the interconnecting parts in hinge eyes by grasp. In the embodiment with the above-described broad levers are each two lever arms 23c, 27c which have a transverse spacing from one another and which can be formed by extensions of the lever webs 23a, 27a. The Adjusting motors M3, M4 are preferably between the lever webs 23a, 27a arranged, whereby a narrow or low design can be achieved. The Length of the adjusting motors M3, M4 can essentially be the length of the levers 23, 27 correspond.

Die Verstellmotoren M3, M4 können durch hydraulische oder pneumatische Kolben-Zylinder-Einheiten gebildet sein oder Elektromotoren E3, E4 aufweisen, denen jeweils ein ihre Drehbewegung in eine längsgerichtete Bewegung umwandelndes Getriebe G3, G4 zugeordnet ist, vorzugsweise ein Spindeltrieb, dessen Spindel S3, S4 ein Teil der beiden teleskopierbaren Verstellmotorteile bilden kann.The adjustment motors M3, M4 can be operated by hydraulic or pneumatic piston-cylinder units be formed or have electric motors E3, E4, each of which a gearbox G3 converting its rotary movement into a longitudinal movement, G4 is assigned, preferably a spindle drive, the spindle S3, S4 of which is part of the can form two telescopic servomotor parts.

Zur Einschaltung und Abschaltung der Verstellmotoren M1 bis M4 ist jeweils ein nicht dargestelltes Schaltelement zugeordnet, z.B. an einem Steuergerät oder Fußschalter, mit dem die Bedienungsperson die Verstellmotoren M3, M4 wahlweise ein- und ausschalten kann. Z.B. für eine von der Bedienungsperson individuell steuerbare Verstellung oder für eine Stellung nach einem vorbestimmten Programm.For switching on and switching off the adjustment motors M1 to M4, there is not one assigned switching element, e.g. on a control unit or foot switch, with which the operator can optionally switch the adjustment motors M3, M4 on and off can. For example, for an adjustment that can be individually controlled by the operator or for a position according to a predetermined program.

Die Kopfstütze 7 weist eine quer zur Schwenkebene schalen- bzw. muldenförmige Kopfstützfläche 34 auf, die sich zumindest auf einem der Rückenlehne 4 zugewandten Längsabschnitt im wesentlichen gerade erstreckt. Im der Rückenlehne 4 abewandten Bereich kann die Kopfstützfläche 34 auslaufen, wodurch ein im zugehörigen Endbereich angeordneter Querwulst 35 des Polsters 21 gebildet sein kann.The headrest 7 has a cup-shaped or trough-shaped shape transverse to the swivel plane Head support surface 34, which face at least on one of the backrest 4 Longitudinal section extends substantially straight. In the backrest 4 facing away Area, the head support surface 34 can run out, as a result of which in the associated end area arranged cross bead 35 of the cushion 21 can be formed.

Die Kopfstütze 7 kann in eine in Fig. 3 dargestellte Kinderstellung verstellt werden, in der das Kopfstützenpolster 21 direkt oder nahe an das Rückenlehnenpolster 4c geschoben ist. In dieser Stellung fluchtet die Kopfstützfläche 34 im wesentlichen mit dem Schalengrund bzw. mit der Rückenstützfläche 36 der Rückenlehne 4. Dabei bildet die Kopfstützfläche 34 eine weitgehend übergangsfreie Fortsetzung des Schalengrundes der Rückenlehne 4, die quer zur Schwenkebene vorzugsweise ebenfalls im Sinne einer Schale muldenförmig ausgebildet ist. In dieser Kinderstellung fluchten der Schalengrund der Rückenlehne 4 und der Schalengrund der Kopfstütze 7 miteinander, wodurch der Kopf eines auf dem Behandlungsstuhl befindlichen Kindes vorteilhaft gestützt wird. Zum einen aufgrund der sich wenigstens über einen Längsabschnitt gerade erstreckenden Kopfstützfläche 34 und zum anderen aufgrund der Einstellung des Abstandes des Rückenflächenteils 4b vom Rückenlehnengelenk 5 läßt sich auch bei unterschiedlich großen Kindern eine vorteilhafte Abstützung des Kopfes erreichen. The headrest 7 can be adjusted into a child position shown in FIG. 3, in which pushed the headrest cushion 21 directly or close to the backrest cushion 4c is. In this position, the head support surface 34 is substantially aligned with the Base of the shell or with the back support surface 36 of the backrest 4 Head support surface 34 a largely transition-free continuation of the bottom of the shell Backrest 4, which preferably also in the sense of a transverse to the swivel plane Shell is trough-shaped. In this child position, the Base of the backrest 4 and base of the headrest 7 together, making the head of a child on the dental chair beneficial is supported. Firstly, due to the fact that it extends at least over a longitudinal section straight extending head support surface 34 and the other due to the setting of the Distance of the back surface part 4b from the backrest joint 5 can also be children of different sizes achieve an advantageous support of the head.

Die Rückenlehne 4 weist an ihrem freien Ende vorzugsweise eine Ausnehmung 37 auf, in die die Kopfstütze 7 hinein bewegbar ist, insbesondere für die Kinderstellung.sThe backrest 4 preferably has a recess 37 at its free end, into which the headrest 7 can be moved, in particular for the child position

Durch die vier Verstellmotoren M1 bis M4 kann jede beliebige, vom Zahnarzt geforderte Stellung bei allen erforderlichen Behandlungsarten erreicht werden. Somit ist es möglich, für verschiedene Behandlungsarten und verschiedene Personen die ideale Einstellung des Behandlungsstuhls 1 zu erreichen. Die Kinderstellung gemäß Fig. 3 und eine erhöhte Rundrückenstellung kann somit motorisch eingestellt werden.The four adjustment motors M1 to M4 can be used by any dentist required position can be achieved with all required types of treatment. So is it is possible to choose the ideal one for different types of treatment and different people To reach the setting of the treatment chair 1. The child position according to Fig. 3 and an increased round back position can thus be adjusted by motor.

Durch eine Programmsteuerung sind die Verstellmotoren so programmiert, daß die Kopfstützenbewegungen und die Bewegung der Rückenlehne 4 den anatomischen Bewegungen des Patienten angepaßt sind. D.h., daß zeitweise zwei, drei oder vier Vertellmotoren gleichzeitig arbeiten und unterschiedliche Bewegungsschritte ausführen.The adjustment motors are programmed by a program control so that the Headrest movements and the movement of the backrest 4 the anatomical Movements of the patient are adjusted. That is, at times two, three or four Vertical motors work simultaneously and perform different movement steps.

Alle vier Bewegungen, zwei Schwenkbewegungen und zwei Längsbewegungen, sind über Wegaufnehmer mit der Steuerung verbunden. Dadurch wird es möglich, Patientendaten für die Lagerung auf dem Patientenstuhl elektronisch zu erfassen, abzuspeichern und beim nächsten Patientenbesuch wieder abzurufen.All four movements, two swivel movements and two longitudinal movements, are Connected to the controller via displacement sensors. This makes it possible Electronically record patient data for storage on the patient chair, save and retrieve the next time you visit the patient.

Wird durch die Programmsteuerung die gewünschte ergonomisch ideale Kopflagerung nicht erreicht, kann durch einen Schalter jeder der vier Verstellmotoren einzeln aktiviert werden und somit die ideale Kopf-/Rückenlagerung erreicht werden.Is the desired ergonomically ideal head position through the program control not reached, each of the four adjustment motors can be activated individually using a switch and thus the ideal head / back position can be achieved.

Claims (9)

  1. Medical or dental treatment chair (1) having
       a seat part (2),
       a back part (4),
       a carrier part (16) arranged on the back part (4),
       an intermediate lever (23) which with its one end is pivotably connected with the carrier part (16),
       a head support lever (27) which with its one end is pivotably connected to the other end of the intermediate lever (23) and carries a head support pad (21),
       and an intermediate lever adjustment motor (M3) which is effective between the carrier part (16) and the intermediate lever (23),
    characterized by
    a head support lever adjustment motor (M4) which is effective between the intermediate lever (23) and the head support lever (27).
  2. Medical or dental treatment chair according to claim 1, in that,
    characterized in that,
    the adjustment motors (M3, M4) are linearly acting adjustment motors, whereby the intermediate lever adjustment motor (M3) is supported on the carrier part (16) in each case jointedly at a working spacing (V1) from the first joint (24) and engages on the intermediate lever (23), and the head support lever adjustment motor (M4) is in each case jointedly supported on the intermediate lever (23) at a working distance (V2) from the second joint (25) and engages on the head support lever (27).
  3. Medical or dental treatment chair according to claim 2,
    characterized in that,
    the intermediate lever adjustment motor (M3) engages in the second joint (25).
  4. Medical or dental treatment chair according to claim 2 or 3,
    characterized in that,
    the head support lever adjustment motor (M4) engages on a transverse arm (23c) of the intermediate lever (23), whereby the transverse arm (23c) stands up, preferably to the side towards the head support lever (27), in an end region of the intermediate lever (23c) towards the second joint (25).
  5. Medical or dental treatment chair according to any preceding claim,
    characterized in that,
    the head support lever (27) is formed with a transverse arm (27c) to be angle shaped, which transverse arm stands up to the side towards the intermediate lever (23) in the end region towards the second joint (25), e.g. stands up in an angled or curved manner.
  6. Medical or dental treatment chair according to any preceding claim,
    characterized in that,
    the connection points between the adjustment motors (M3, M4) and the levers (23, 27) are formed by means of joints (25, 31, 32, 33) preferably having joint bolts which pass through associated joint eyes.
  7. Medical or dental treatment chair according to any preceding claim,
    characterized in that,
    the levers (23, 27) each have at least two lever webs (23a, 27a) at a transverse spacing from one another, which are connected with one another by means of a transverse part (23b, 27b).
  8. Medical or dental treatment chair according to any preceding claim
    characterized in that,
    the head support (7) is so adjustable that an aligned transition from the head support pad to the backrest pad is present when the head support pad (21) is pushed directly or nearly onto the backrest pad.
  9. Medical or dental treatment chair according to claim 8,
    characterized in that,
    the back part (4) has at its free end a recess into which the head support (7) can be pushed.
EP01925498A 2000-03-22 2001-03-22 Medical or dental treatment chair Expired - Lifetime EP1265577B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10014063A DE10014063A1 (en) 2000-03-22 2000-03-22 Medical or dental treatment chair or a headrest for such a treatment chair
DE10014063 2000-03-22
PCT/EP2001/003270 WO2001070169A1 (en) 2000-03-22 2001-03-22 Medical or dental treatment chair

Publications (2)

Publication Number Publication Date
EP1265577A1 EP1265577A1 (en) 2002-12-18
EP1265577B1 true EP1265577B1 (en) 2003-11-26

Family

ID=7635824

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01103986A Expired - Lifetime EP1138306B1 (en) 2000-03-22 2001-02-19 Medical or dental chair and head rest for such a chair
EP01925498A Expired - Lifetime EP1265577B1 (en) 2000-03-22 2001-03-22 Medical or dental treatment chair

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01103986A Expired - Lifetime EP1138306B1 (en) 2000-03-22 2001-02-19 Medical or dental chair and head rest for such a chair

Country Status (7)

Country Link
US (2) US6520585B1 (en)
EP (2) EP1138306B1 (en)
JP (2) JP4721604B2 (en)
DE (3) DE10014063A1 (en)
DK (2) DK1138306T3 (en)
ES (2) ES2306680T3 (en)
WO (1) WO2001070169A1 (en)

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Also Published As

Publication number Publication date
DK1138306T3 (en) 2008-10-20
DE50114030D1 (en) 2008-07-31
DE50101034D1 (en) 2004-01-08
JP4721604B2 (en) 2011-07-13
ES2306680T3 (en) 2008-11-16
US7032975B2 (en) 2006-04-25
EP1138306B1 (en) 2008-06-18
JP2003527206A (en) 2003-09-16
EP1138306A1 (en) 2001-10-04
US6520585B1 (en) 2003-02-18
WO2001070169A1 (en) 2001-09-27
US20030030314A1 (en) 2003-02-13
JP4674330B2 (en) 2011-04-20
DK1265577T3 (en) 2004-03-15
EP1265577A1 (en) 2002-12-18
JP2001299838A (en) 2001-10-30
DE10014063A1 (en) 2001-09-27
ES2210149T3 (en) 2004-07-01

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