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EP0895769B1 - Chair for medical or dental care - Google Patents

Chair for medical or dental care Download PDF

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Publication number
EP0895769B1
EP0895769B1 EP98114326A EP98114326A EP0895769B1 EP 0895769 B1 EP0895769 B1 EP 0895769B1 EP 98114326 A EP98114326 A EP 98114326A EP 98114326 A EP98114326 A EP 98114326A EP 0895769 B1 EP0895769 B1 EP 0895769B1
Authority
EP
European Patent Office
Prior art keywords
medical
treatment chair
dental
carrier arm
chair according
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
EP98114326A
Other languages
German (de)
French (fr)
Other versions
EP0895769A3 (en
EP0895769A2 (en
Inventor
Oliver Schilling
Thomas Ruhdorf
Lorenz Lessmeister
Richard Lipatow
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
Original Assignee
Kaltenbach and Voigt 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 Kaltenbach and Voigt GmbH filed Critical Kaltenbach and Voigt GmbH
Publication of EP0895769A2 publication Critical patent/EP0895769A2/en
Publication of EP0895769A3 publication Critical patent/EP0895769A3/en
Application granted granted Critical
Publication of EP0895769B1 publication Critical patent/EP0895769B1/en
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
    • A61G15/14—Dental work stands; Accessories therefor
    • A61G15/16—Storage, holding or carrying means for dental handpieces or the like
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/72—General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention

Definitions

  • the invention relates to a medical or dental medicine Dental chair.
  • the upright support arm a so-called parallelogram support arm with two juxtaposed parallelogram arms, which in the sense of a Articulated quadrilateral with a support arm base part and a support arm head part are connected.
  • This known arm is in a right angle to the axes of the four-bar pivoting plane tiltable and thus in its inclination adjustable, as well as height adjustable.
  • an electrical Drive motor provided, which is integrated in the parallelogram support arm.
  • the upper end of the support arm leads to one A lateral curve movement because the simultaneous Adjustment of the inclination and height using the characteristics of the four-bar linkage is determined.
  • a height adjustment that is independent of the inclination setting not possible with this known configuration.
  • the latter is desirable order for the treating person a predeterminable removal position and a easy removal of the treatment tool at individual altitude To enable patients.
  • the document DE 32 30 248 A1 describes a medical or dental medical treatment chair with a storage device for at least one treatment tool, which is arranged in a lateral position with respect to the treatment chair on a substantially vertical support arm which is carried by a support which is horizontally adjustable, in particular is mounted on the treatment chair, the storage device being rotatably mounted relative to the support arm and / or the support arm relative to the carrier in each case about an approximately vertical joint axis of a joint, wherein the support arm is designed as a telescopic device and its length can be adjusted along its longitudinal axis by a height adjustment device and can be locked in the respective adjustment position by a locking device.
  • this known treatment chair is the Support arm designed in the sense of a telescopic device with two telescopic parts, which are adjustable relative to each other in the longitudinal direction of the central axis of the support arm and can be determined in the respective setting. Due to the straightforwardness of the Height adjustment movement can be a desired in this embodiment Predetermine height position more easily.
  • the invention has for its object a medical or dental treatment chair like that design that while ensuring a simple design also a simple direct adjustment of the support arm is possible.
  • the support arm is upright, substantially vertically or obliquely, and the locking device is by a Detent device formed in the longitudinal direction of the telescopic device has locking edges or recesses one behind the other, one Locking nose in the recesses or behind the locking edges can be snapped into place.
  • the support arm is preferably in the sense of a telescopic device with two telescopic parts, which in the Longitudinal direction of the central axis of the support arm adjustable relative to each other and in the each setting can be determined, the Latching device comprises a perforated strip, in the locking holes one between a locking position and one Release position of the movably mounted latching lug under the force of a spring can be snapped into place.
  • the telescopic device is like this trained that the height adjustment can be done in stages. Due to the Straightness of the height adjustment movement can be done with the invention Design a desired height position much easier to predict.
  • the configuration according to the invention can be carried out in a simple manner realize, which also leads to a small and lightweight design. It is to be taken into account that in the configuration according to the invention the telescopic parts can be arranged directly next to each other or inside one another, which is the case with known Design with a quadrangle is not possible because the effectiveness of Quadrilateral joints would be impaired.
  • the height adjustment can be both realize manually as well as with a drive motor. In both cases due to the straight axial guidance between the telescopic parts not only one simple guidance but also a simple arrangement and integration of the motor realize.
  • the configuration according to the invention is particularly suitable in combination with a support arm which is tilted or inclined with respect to the vertical Position extends, with its base part rotatable about a vertical axis of rotation a carrier carrying it and / or the storage device is also connected is rotatably mounted on the support arm about a vertical axis of rotation.
  • This Design enables a targeted adjustment and adjustment of the Storage device relative to the treatment chair not only in the horizontal but also in the vertical, whereby the vertical adjustment is simple and can be carried out specifically because it takes place in the longitudinal direction of the support arm, and is therefore easy to determine in its direction.
  • Treatment chair namely advantageous for the dentist and / or the helper, one Storage device for treatment tools in the ergonomically favorable To have access area.
  • a convenient access area extends from one Area to the side of the treatment chair and over the treatment chair.
  • a Arrangement of the storage device above the treatment chair is at Height-adjustable treatment chairs are problematic. It would be possible that To position the storage device so high on an associated carrying device that they are in the uppermost position of the treatment chair over the latter is located, but then access is difficult because the person treating it is very must reach up to get to the treatment tool. Is that Storage device, however, too deep, there is a risk that when the Treatment chair the patient lying thereon or an attachment of the Dental chair bumps against the storage device, creating dangers of Injury or damage are specified.
  • a further development of the invention is therefore the medical or To design a dental treatment chair so that with warranty a user-friendly access to the storage device when starting up Avoid the risk of a collision with the storage device is.
  • the treatment chair is one between it and the Carrying device effective shutdown device provided, which then functions occurs and the dental chair lifting device switches off when the Dental chair or an attachment of the same or the patient lying on it approaches the support device beyond a predetermined distance or against Carrier presses. As a result, the aforementioned injuries or Damage avoided.
  • a contactless switch e.g. a Serve light barrier, or a switch effective with touch, whose Switching element is actuated when pressure contact with the carrying device or an attachment of the same.
  • the subclaims contain features that are simple, small and Design that can be manufactured cost-effectively, has a good and long-lasting function ensure the adjustability of the storage device with respect to the Further improve the treatment chair and in particular a user-friendly one Allow height adjustment.
  • the main parts of the treatment station are preferred height-adjustable treatment chair 2 with a lying or seat body 2a, one adjustable backrest 3 and an adjustable headrest 4, one Supply device 5 for mouthwash, among other things, with which a cup 6 can be filled, a receiving device 7 with a cuspidor 8 for receiving and Do not remove mouthwash and other excrement from the treatment site shown patients, a first storage device 9 with at least one holder 11 for at least one treatment instrument, not shown, the first Storage device 9 arranged on one side of the treatment chair 2 and for the treating physician is determined and accessible, here on the right side of the Treatment chair 2 is arranged, and a second storage device 12 with at least a holder 13 for at least one treatment instrument, not shown, the second storage device 12 on the opposite side of the treatment chair 2 is arranged and is accessible by a helper.
  • the storage devices 9, 12 are each horizontally adjustable to be in a position for the treating person. This can be done with regard to the second storage device 12 serve a toggle linkage 14, the indirect or can be mounted directly on a stand 15 for the receiving device 7 and a horizontal adjustment of the second storage device 12 enables.
  • An electrical and possibly also hydraulic and / or pneumatic Controller 16 can e.g. be integrated in the stand 15 that by so-called. Flexible Supply hoses are connected to the treatment instruments, not shown.
  • a straight, obliquely upward extending support arm 17 is provided, which about a vertical axis of rotation 18 in one Swivel joint 19 is freely rotatably connected to an approximately horizontal cantilever arm 21, which is pivotable about a vertical pivot axis 22 in a lateral pivot joint 23 is connected to the treatment chair 2 or its base part, which is in the middle Longitudinal region of the treatment chair 2 can be arranged.
  • the storage device 9, the Support arm 17 and the cantilever arm 21 form a generally designated 10 Carrying device for one or more treatment tools.
  • the first storage device 9 is about a vertical axis of rotation 24 in another Swivel joint 25 is freely rotatably supported on the support arm 17. Because of the horizontal distance between the swivel joint 23 and the swivel joint 19 on the one hand and between the latter and the pivot 25 on the other hand can be in the predetermined pivoting and rotating ranges, the storage device 9 with a manual You can adjust the pushing or pulling force horizontally, in any adjustment position remains.
  • the support arm 17 is by an integrated height adjustment device 26 adjustable in its longitudinal direction or telescopic and in the respective Adjustment position lockable.
  • the storage device 9 can also be in each case set advantageous altitude.
  • the axial adjustability and adjustability of the support arm 17 is made possible that it is designed as a telescopic device 27 with two telescopic parts 27a, 27b, which in a coaxial or axially parallel guide 28 are axially displaceable.
  • the telescopic parts 27a, 27b which overlap in the region of the guide 28 the lower telescopic part 27a rigidly connected to a base part 29, which is the support arm 17 associated joint part of the rotary joint 19 forms.
  • the top one is Telescopic part 27b rigidly connected to a head part 31, which is the support arm 17th associated joint part of the swivel 25 forms.
  • the telescopic parts 27a, 27b formed by profiles, preferably in the form of interlocking half-shells 32, 33, of which the outer half-shell 32, which here forms the lower telescopic part 27a, in has two opposite guide grooves 34 in its end regions and in its base region preferably also has a further guide groove 35, in which of the inner half shell 33 and outwardly projecting guide heads 36 border, which can be sliding blocks or roles attached to the inner Half-shell 33 can be fastened or supported in screws 37 that pass through holes can.
  • the aforementioned height adjustment device 26 is in the region of the guide 28 between the Telescopic parts 27a, 28a arranged and functionally effective, being one between the Telescopic parts 27a, 27b effective connecting device, here in the form of a Locking device 38 and special actuation mechanisms for the Has locking device 38.
  • the locking device 38 has a locking lug 41 on a telescopic part, here on the upper telescopic part 27b and a perforated strip 42 with a plurality of axially one behind the other arranged and preferably the same distances from each other locking holes 43, in which the latching nose 41 can be releasably engaged with little movement play capable, the perforated strip 42 is attached here to the lower telescopic part 27a.
  • the perforated strip 42 is a flat plate which is connected to the free Side edges of the outer half-shell is screwed to the part of the lower telescopic part 27a is.
  • the inner is between the outer half-shell 32 and the perforated strip 42 Half-shell 33, in the free space 44, the locking lug 41 on a locking bolt 45 is transversely slidably mounted in a transverse guide 46 of a guide body 47 attached to the bottom of the inner half-shell 33, here in a hole 48 in the half-shell 33 is firmly used.
  • the latching lug 41 has an upward sloping or rounded contact surface 49 and it is in its locked position by a spring 51 biased. This advance movement is limited by a stop 52 which is dimensioned in this way is that the locking lug 41 so far immersed in the respective locking hole 43 that the upper edge of the hole is opposite the contact surface 49.
  • the latching lug 41 is a release device 50 and a restraint device 53 assigned, which unlatch the locking lug 41 and in a retracted Fix position in which it can not snap into the locking holes 43.
  • the Unlatching device 50 and the restraint device 53 reach the upper stroke end position of the support arm 17 automatically in their latching nose 41 and reserved functions.
  • the detaching device 50 In the upper stroke end position of the support arm 17 is on the inside of the perforated strip 42 the detaching device 50 forming stop part 50a, preferably with a Starting slope 50b, arranged and preferably screwed so that when Pulling the support arm 17 into its upper stroke end position, the latching lug 41 abuts the stop part 50a and from it into that shown in FIG. 7 retracted position is pushed and unlatched.
  • the restraint device 53 is connected by a clamping or locking device 54 a locking member 55 is formed, which the latching lug 41 in retracted position or preferably locked form-fitting.
  • the locking device 54 is by itself extending axially to the support arm 17 and in the latching bolt 45 in a slot 56 comprehensive locking bolt 57 formed, the locking head 58 at the top End of the bolt 57 is arranged and by a spring 59 against the locking bolt 45 is biased.
  • the locking bolt 57 is in associated holes 61a, 61b of the Guide body 47 guided in the vertical direction, wherein he Locking bolt 45 with movement play in slot 56.
  • the spring 59 here one Compression spring is supported in an attachment 47a of the guide body 47 on the upper side.
  • the shaft 57a of the locking bolt 57 projects downward over the guide body 47 by a certain amount, predetermined by the locking movement, here several Millimeter.
  • the locking bolt 45 On the side facing the head 58, the locking bolt 45 has one Locking recess 64 on, 56 recesses on both sides of the slot forms, into which the head 58 can dip, as can be seen from FIG. 7, according to which the head 58 is in the locking recess 64 and the Locking bolt 45 is locked in its retracted position.
  • the head snaps 58 from its position at the top of the locking bolt 45 under the Force of the spring 59 automatically into the locking recess 64, whereby he Locking bolt 59 locked in this position.
  • the restraint device 53 is in the lower stroke end position of the support arm 17
  • Release device 65 for releasing the locking device 54 also in the free space 44 assigned, wherein the release device 65 is formed by a stop 66 which in be formed simply by a leg 67 bent from the perforated strip 42 can.
  • the support arm 17 first to move into its upper stroke end position, in which the unlatching device 50 Retainer 53 function, then in its lower stroke end position move in which the retainer 54 is deactivated, and then around pull a desired dimension apart to achieve the desired height at which the locking device 38 engages automatically.
  • the one enclosed between the longitudinal axis 17a of the support arm 17 and the vertical acute angle W is in particular about 45 to 75 °, preferably about 60 °.
  • the treatment chair 2 can optionally be designed as a right or left version become.
  • a corresponding swivel joint 23 is on the other side of the Treatment chair arranged in mirror image or prepared.
  • the support arm 17 can be at such a large lateral distance a from the treatment chair 2 or its base part, that its upper end region or that of it worn storage device 9 over the treatment chair 2 in its basic position located when the support arm 17 is arranged rotated toward the treatment chair 2.
  • a general with 2b designated lifting device with an electrically operated drive motor would then be raised with the upper end of the support arm 17 or with the the storage device 9 on it collide.
  • the Treatment chair 2 is assigned an electrical lift switch-off device 71, which then if the seat body 2a or an attachment thereof against the support arm 17 or the Storage device 9 or an attachment of the same bumps, the lifting device 2b switches off.
  • the switch-off device 71 can be a contactless switch or a switch Have touch switches 72, as is the case with the present embodiment.
  • the touch switch 72 can be directly between the seat body 2a or one Attachment of the same and the support arm 17 or the storage device 9 may be arranged or - as in the present embodiment - between two movable parts of the Support arm arrangement may be provided.
  • the switch 72 is advantageously arranged in the foot region of the support arm 17. How 8, the base part 29 of the support arm 17 has a Oblique position of the support arm 17 predetermined inclined support rod 73, which is preferably is integrally formed on a bearing ring 74 of the base part 29 and obliquely from this protrudes straight up.
  • the support rod 73 is a profile piece on which the lower Telescopic part 27a is plugged on from above in the sense of a jack. It reaches behind the half-shell-shaped telescopic part 27a, the support rod 73 on one side, while the free, inwardly directed edges 27a1 of the telescopic part 27a on the support rod 73 reach behind the other side, here the oblique side visible from above.
  • the tilt axis 77 by means of a tilt joint 78.
  • the telescopic part 27a or the support arm 17 is in the region of the screws 79 extending tilt axis 77 tiltable.
  • the tilt axis 77 can also be arranged on the edge of the telescopic part 27a facing the axis of rotation. This Tilting point is designated 83 in FIG. 8.
  • the switch 76 is at an upward distance from the tilt axis 77, 83 arranged in the upper end region of the support rod 73.
  • the switch 76 is fastened to the support rod 73, a switching part 76a points in the switching-tilting direction of arrow 75 and with the associated Edge strip 27a1 cooperates as a switching part.
  • a switching part which is adjustable and adjustable in the sense of the switching direction intended.
  • an adjustment screw is 84 provided in a threaded hole 85 in the associated edge strip 27a1 is screwed in and its head for adjusting and adjusting the screw 84 is accessible.
  • the upper telescopic part 27b is surrounded by a protective tube 87 which is rigidly on Head part 31 is fixed and the upper end of the lower telescopic part 27 a overlaps, that forms a telescopic protective jacket with the upper protective tube 87.
  • the height adjustment device 26 is manual or by a particular one electric drive motor adjustable in height, preferably in the support arm 17 or between the support arm 17 and the storage device 9 or in the foot area of the Support arm 17 is arranged and can be switched on or off by an actuating element by the operator, e.g. the doctor or helper can be operated, e.g. a foot switch.

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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)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

Die Erfindung bezieht sich auf einen medizinischen oder dentalmedizinischen Behandlungsstuhl.The invention relates to a medical or dental medicine Dental chair.

Bei einem in der EP 0 593 791 B1 beschriebenen bekannten Behandlungsstuhl ist der aufrechtstehende Tragarm ein sogenannter Paralellogrammtragarm mit zwei nebeneinander angeordneten Paralellogrammarmen, die im Sinne eines Gelenkvierecks mit einem Tragarmbasisteil und einem Tragarmkopfteil gelenkig verbunden sind. Dieser bekannte Tragarm ist in einer rechtwinklig zu den Achsen des Gelenkvierecks verlaufenden Schwenkebene kippbar und somit in seiner Neigung einstellbar, sowie zugleich höheneinstellbar. Hierzu ist ein elektrischer Antriebsmotor vorgesehen, der in den Paralellogrammtragarm integriert ist.In a known treatment chair described in EP 0 593 791 B1, the upright support arm a so-called parallelogram support arm with two juxtaposed parallelogram arms, which in the sense of a Articulated quadrilateral with a support arm base part and a support arm head part are connected. This known arm is in a right angle to the axes of the four-bar pivoting plane tiltable and thus in its inclination adjustable, as well as height adjustable. For this is an electrical Drive motor provided, which is integrated in the parallelogram support arm.

Bei dieser bekannten Ausgestaltung führt das obere Ende des Tragarms bei einer Höheneinstellung eine seitliche Kurvenbewegung aus, da die gleichzeitige Verstellung der Neigung und der Höhe durch die Merkmale des Gelenkvierecks bestimmt ist. Eine von der Neigungseinstellung unabhängige Einstellung der Höhe ist bei dieser bekannten Ausgestaltung nicht möglich. Letzteres ist jedoch erwünscht, um für die behandelnde Person eine vorbestimmbare Entnahmeposition und eine bequeme Entnahme des Behandlungswerkzeug in individuellen Höhenlagen des Patienten zu ermöglichen.In this known embodiment, the upper end of the support arm leads to one A lateral curve movement because the simultaneous Adjustment of the inclination and height using the characteristics of the four-bar linkage is determined. A height adjustment that is independent of the inclination setting not possible with this known configuration. However, the latter is desirable order for the treating person a predeterminable removal position and a easy removal of the treatment tool at individual altitude To enable patients.

Die Druckschrift DE 32 30 248 A1 beschreibt einen medizinischen oder dentalmedizinischen Behandlungsstuhl mit einer Ablagevorrichtung für wenigstens ein Behandlungswerkzeug, die bezüglich des Behandlungsstuhls in seitlicher Position auf einem im wesentlichen vertikal stehenden Tragarm angeordnet ist, der von einem Träger getragen ist, der horizontal verstellbar, insbesondere am Behandlungsstuhl , gelagert ist, wobei die Ablagevorrichtung relativ zum Tragarm und/oder der Tragarm relativ zum Träger jeweils um eine etwa vertikale Gelenkachse eines Gelenks drehbar gelagert ist,
wobei der Tragarm als Teleskopvorrichtung ausgebildet und durch eine Höheneinstellvorrichtung längs seiner Längsachse in seiner Länge verstellbar und in der jeweiligen Verstellposition durch eine Feststellvorrichtung feststellbar ist.The document DE 32 30 248 A1 describes a medical or dental medical treatment chair with a storage device for at least one treatment tool, which is arranged in a lateral position with respect to the treatment chair on a substantially vertical support arm which is carried by a support which is horizontally adjustable, in particular is mounted on the treatment chair, the storage device being rotatably mounted relative to the support arm and / or the support arm relative to the carrier in each case about an approximately vertical joint axis of a joint,
wherein the support arm is designed as a telescopic device and its length can be adjusted along its longitudinal axis by a height adjustment device and can be locked in the respective adjustment position by a locking device.

Bei diesem bekannten Behandlungsstuhl ist der Tragarm im Sinne einer Teleskopvorrichtung mit zwei Teleskopteilen ausgebildet, die in der Längsrichtung der Mittelachse des Tragarms relativ zueinander verstellbar und in der jeweiligen Einstellung feststellbar sind. Aufgrund der Geradlinigkeit der Höheneinstellbewegung läßt sich bei dieser Ausgestaltung eine angestrebte Höhenposition einfacher vorherbestimmen.In this known treatment chair is the Support arm designed in the sense of a telescopic device with two telescopic parts, which are adjustable relative to each other in the longitudinal direction of the central axis of the support arm and can be determined in the respective setting. Due to the straightforwardness of the Height adjustment movement can be a desired in this embodiment Predetermine height position more easily.

Der Erfindung liegt die Aufgabe zugrunde, einen medizinischen oder dentalmedizinischen Behandlungsstuhl so auszugestalten, daß bei Gewährleistung einer einfachen Ausgestaltung auch eine einfache direkte Einstellung des Tragarms möglich ist.The invention has for its object a medical or dental treatment chair like that design that while ensuring a simple design also a simple direct adjustment of the support arm is possible.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. This object is solved by the features of claim 1.

Bei der erfindungsgemäßen Ausgestaltung nach Anspruch 1 steht den Tragarm im wesentlichen vertikal oder schräg aufrecht, und die Feststellvorrichtung ist durch eine Rastvorrichtung gebildet, die in der Längsrichtung der Teleskopvorrichtung hintereinanderliegend Verrastungskanten oder -ausnehmungen aufweist, wobei eine Verrastungsnase in die Venastungsausnehmungen oder hinter die Verrastungskanten einrastbar ist.In the embodiment according to the invention according to claim 1, the support arm is upright, substantially vertically or obliquely, and the locking device is by a Detent device formed in the longitudinal direction of the telescopic device has locking edges or recesses one behind the other, one Locking nose in the recesses or behind the locking edges can be snapped into place.

Vorzugsweise ist der Tragarm im Sinne einer Teleskopvorrichtung mit zwei Teleskopteilen ausgebildet, die in der Längsrichtung der Mittelachse des Tragarms relativ zueinander verstellbar und in der jeweiligen Einstellung feststellbar sind, wobei die Rastvorrichtung eine Lochleiste umfasst, in deren Verrastungslöcher eine zwischen einer Venastungsstellung und einer Freigabestellung beweglich gelagerte Verrastungsnase unter der Kraft einer Feder einrastbar ist.The support arm is preferably in the sense of a telescopic device with two telescopic parts, which in the Longitudinal direction of the central axis of the support arm adjustable relative to each other and in the each setting can be determined, the Latching device comprises a perforated strip, in the locking holes one between a locking position and one Release position of the movably mounted latching lug under the force of a spring can be snapped into place.

Bei der erfindungsgemäßen Ausgestaltung ist die Teleskopvorrichtung so ausgebildet, daß die Höheneinstellung in Stufen erfolgen kann. Aufgrund der Geradlinigkeit der Höheneinstellbewegung läßt sich bei der erfindungsgemäßen Ausgestaltung eine angestrebte Höhenposition viel einfacher vorherbestimmen.In the embodiment according to the invention, the telescopic device is like this trained that the height adjustment can be done in stages. Due to the Straightness of the height adjustment movement can be done with the invention Design a desired height position much easier to predict.

Außerdem läßt sich die erfindungsgemäße Ausgestaltung in einfacher Weise realisieren, wobei sie auch zu einer kleinen und leichten Bauweise führt. Dabei ist zu berücksichtigen, daß bei der erfindungsgemäßen Ausgestaltung die Teleskopteile direkt nebeneinander oder ineinander angeordnet werden können, was bei der bekannten Ausgestaltung mit einem Gelenkviereck nicht möglich ist, da die Wirksamkeit des Gelenkvierecks beeinträchtigt wäre.In addition, the configuration according to the invention can be carried out in a simple manner realize, which also leads to a small and lightweight design. It is to be taken into account that in the configuration according to the invention the telescopic parts can be arranged directly next to each other or inside one another, which is the case with known Design with a quadrangle is not possible because the effectiveness of Quadrilateral joints would be impaired.

Bei der erfindungsgemäßen Ausgestaltung läßt sich die Höheneinstellung sowohl manuell als auch mit einem Antriebsmotor realisieren. In beiden Fällen läßt sich aufgrund der geraden axialen Führung zwischen den Teleskopteilen nicht nur eine einfache Führung sondern auch eine einfache Anordnung und Integration des Motors verwirklichen.In the embodiment according to the invention, the height adjustment can be both realize manually as well as with a drive motor. In both cases due to the straight axial guidance between the telescopic parts not only one simple guidance but also a simple arrangement and integration of the motor realize.

Die erfindungsgemäße Ausgestaltung eignet sich besonders gut in Kombination mit einem Tragarm, der sich in einer bezüglich der Vertikalen gekippten bzw. schrägen Position erstreckt, wobei sein Basisteil um eine vertikale Drehachse drehbar mit einem ihn tragenden Träger verbunden ist und/oder die Ablagevorrichtung ebenfalls um eine vertikale Drehachse drehbar auf dem Tragarm gelagert ist. Diese Ausgestaltung ermöglicht eine gezielte Verstellung und Einstellung der Ablagevorrichtung relativ zum Behandlungsstuhl nicht nur in der Horizontalen sondern auch in der Vertikalen, wobei sich die vertikale Einstellung einfach und gezielt durchführen läßt, weil sie in der Längsrichtung des Tragarms erfolgt, und deshalb in ihrer Zielrichtung gut bestimmbar ist.The configuration according to the invention is particularly suitable in combination with a support arm which is tilted or inclined with respect to the vertical Position extends, with its base part rotatable about a vertical axis of rotation a carrier carrying it and / or the storage device is also connected is rotatably mounted on the support arm about a vertical axis of rotation. This Design enables a targeted adjustment and adjustment of the Storage device relative to the treatment chair not only in the horizontal but also in the vertical, whereby the vertical adjustment is simple and can be carried out specifically because it takes place in the longitudinal direction of the support arm, and is therefore easy to determine in its direction.

Es ist aus ergonomischen Gründen für die Bedienungspersonen eines Behandlungsstuhls, nämlich für den Zahnarzt und/oder die Helferin vorteilhaft, eine Ablagevorrichtung für Behandlungswerkzeuge im ergonomisch günstigen Zugriffsbereich zu haben. Ein günstiger Zugriffsbereich erstreckt sich von einem Bereich seitlich neben dem Behandlungsstuhl bis über den Behandlungsstuhl. Eine Anordnung der Ablagevorrichtung über dem Behandlungsstuhl ist jedoch bei höhenverstellbaren Behandlungsstühlen problematisch. Es wäre zwar möglich, die Ablagevorrichtung so hoch an einer zugehörigen Tragvorrichtung zu positionieren, daß sie sich auch in der obersten Position des Behandlungsstuhls über letzterem befindet, jedoch ist dann der Zugriff erschwert, weil die behandelnde Person sehr hoch greifen muß, um zum Behandlungswerkzeug zu gelangen. Steht die Ablagevorrichtung dagegen zu tief, besteht die Gefahr, daß beim Hochfahren des Behandlungsstuhls der daraufliegende Patient oder ein Anbauteil des Behandlungsstuhls gegen die Ablagevorrichtung stößt, wodurch Gefahren der Verletzung oder Beschädigungen vorgegeben sind.It is one for operators for ergonomic reasons Treatment chair, namely advantageous for the dentist and / or the helper, one Storage device for treatment tools in the ergonomically favorable To have access area. A convenient access area extends from one Area to the side of the treatment chair and over the treatment chair. A Arrangement of the storage device above the treatment chair is at Height-adjustable treatment chairs are problematic. It would be possible that To position the storage device so high on an associated carrying device that they are in the uppermost position of the treatment chair over the latter is located, but then access is difficult because the person treating it is very must reach up to get to the treatment tool. Is that Storage device, however, too deep, there is a risk that when the Treatment chair the patient lying thereon or an attachment of the Dental chair bumps against the storage device, creating dangers of Injury or damage are specified.

Eine Weiterbildung der Erfindung bezweckt deshalb, den medizinischen oder dentalmedizinischen Behandlungsstuhl so auszugestalten, daß bei Gewährleistung eines handhabungsfreundlichen Zugriffs zur Ablagevorrichtung beim Hochfahren des Behandlungsstuhls die Gefahr einer Kollision mit der Ablagevorrichtung vermieden ist.A further development of the invention is therefore the medical or To design a dental treatment chair so that with warranty a user-friendly access to the storage device when starting up Avoid the risk of a collision with the storage device is.

Bei dieser Weiterbildung ist dem Behandlungsstuhl eine zwischen ihm und der Tragvorrichtung wirksame Abschaltvorrichtung vorgesehen, die dann in Funktion tritt und die Hubvorrichtung des Behandlungsstuhls abschaltet, wenn der Behandlungsstuhl oder ein Anbauteil desselben oder der daraufliegende Patient sich der Tragvorrichtung über einen vorgegebenen Abstand hinaus nähert oder gegen die Tragvorrichtung drückt. Hierdurch werden die vorgenannten Verletzungen oder Beschädigungen vermieden.In this training, the treatment chair is one between it and the Carrying device effective shutdown device provided, which then functions occurs and the dental chair lifting device switches off when the Dental chair or an attachment of the same or the patient lying on it approaches the support device beyond a predetermined distance or against Carrier presses. As a result, the aforementioned injuries or Damage avoided.

Zur Abschaltung der Hubvorrichtung kann ein berührungsloser Schalter, z.B. eine Lichtschranke, oder ein mit Berührung wirksamer Schalter dienen, dessen Schaltelement dann betätigt wird, wenn Druckkontakt mit der Tragvorrichtung oder einem Anbauteil derselben besteht.To switch off the lifting device, a contactless switch, e.g. a Serve light barrier, or a switch effective with touch, whose Switching element is actuated when pressure contact with the carrying device or an attachment of the same.

In den Unteransprüchen sind Merkmale enthalten, die eine einfache, kleine und kostengünstig herstellbare Bauweise ermöglichen, eine gute und langlebige Funktion gewährleisten, die Einstellbarkeit der Ablagevorrichtung bezüglich des Behandlungsstuhls weiter verbessern und insbesondere eine handhabungsfreundliche Höheneinstellung ermöglichen.The subclaims contain features that are simple, small and Design that can be manufactured cost-effectively, has a good and long-lasting function ensure the adjustability of the storage device with respect to the Further improve the treatment chair and in particular a user-friendly one Allow height adjustment.

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

Fig. 1
einen erfindungsgemäßen Behandlungsstuhl in der Seitenansicht;
Fig. 2
den Teilschnitt II-II in Fig. 1;
Fig. 3
einen sich aufwärts erstreckenden Tragarm des Behandlungsstuhls in vergrößerter Darstellung, teilweise geschnitten, in der Seitenansicht,
Fig. 4
den Schnitt IV-IV in Fig. 3 in etwas vergrößerter Darstellung;
Fig. 5
den Schnitt VI-VI in Fig. 3 in etwas vergrößerter Darstellung;
Fig. 6
ein Teleskopteil des Tragarms in Form einer Halbschale in der Draufsicht;
Fig. 7
die in Fig. 3 mit X gekennzeichnete Einzelheit in vergrößerter Darstellung;
Fig. 8
ein Basisteil des Tragarms im vertikalen Schnitt gemäß der Einzelheit Y in Fig. 3 in vergrößerter Darstellung;
Fig. 9
das Basisteil in der Seitenansicht von rechts in der Blickrichtung schräg nach unten.
The invention and further advantages which can be achieved by it are explained in more detail below on the basis of advantageous refinements. It shows
Fig. 1
a dental chair according to the invention in side view;
Fig. 2
the partial section II-II in Fig. 1;
Fig. 3
an upwardly extending support arm of the treatment chair in an enlarged view, partially in section, in side view,
Fig. 4
the section IV-IV in Figure 3 in a somewhat enlarged representation.
Fig. 5
the section VI-VI in Figure 3 in a somewhat enlarged representation.
Fig. 6
a telescopic part of the support arm in the form of a half-shell in plan view;
Fig. 7
the detail marked X in Figure 3 in an enlarged view;
Fig. 8
a base part of the support arm in vertical section according to the detail Y in Figure 3 in an enlarged view.
Fig. 9
the base part in the side view from the right in the direction of view obliquely downwards.

Die Hauptteile des allgemein mit 1 bezeichneten Behandlungsplatzes sind ein vorzugsweise höheneinstellbarer Behandlungsstuhl 2 mit einem Liege- bzw. Sitzkörper 2a, einer einstellbaren Rückenlehne 3 und einer einstellbaren Kopfstütze 4, einer Versorgungseinrichtung 5 unter anderem für Mundspülwasser, mit der ein Becher 6 befüllbar ist, eine Aufnahmeeinrichtung 7 mit einem Speibecken 8 zur Aufnahme und Abführung von Mundspülwasser und anderen Exkrementen der Behandlungsstelle am nicht dargestellten Patienten, eine erste Ablagevorrichtung 9 mit wenigstens einem Halter 11 für wenigstens ein nicht dargestelltes Behandlungsinstrument, wobei die erste Ablagevorrichtung 9 an einer Seite des Behandlungsstuhls 2 angeordnet und für den behandelnden Arzt bestimmt und zugänglich ist, hier an der rechten Seite des Behandlungsstuhls 2 angeordnet ist, und eine zweite Ablagevorrichtung 12 mit wenigstens einem Halter 13 für wenigstens ein nicht dargestelltes Behandlungsinstrument, wobei die zweite Ablagevorrichtung 12 an der gegenüberliegenden Seite des Behandlungsstuhls 2 angeordnet ist und von einer Helferin zugänglich ist.The main parts of the treatment station, generally designated 1, are preferred height-adjustable treatment chair 2 with a lying or seat body 2a, one adjustable backrest 3 and an adjustable headrest 4, one Supply device 5 for mouthwash, among other things, with which a cup 6 can be filled, a receiving device 7 with a cuspidor 8 for receiving and Do not remove mouthwash and other excrement from the treatment site shown patients, a first storage device 9 with at least one holder 11 for at least one treatment instrument, not shown, the first Storage device 9 arranged on one side of the treatment chair 2 and for the treating physician is determined and accessible, here on the right side of the Treatment chair 2 is arranged, and a second storage device 12 with at least a holder 13 for at least one treatment instrument, not shown, the second storage device 12 on the opposite side of the treatment chair 2 is arranged and is accessible by a helper.

Die Ablagevorrichtungen 9, 12 sind jeweils horizontal verstellbar, um sie in einer günstigen Reichweite für die behandelnde Person zu positionieren. Hierzu kann bezüglich der zweiten Ablagevorrichtung 12 ein Kniehebelgestänge 14 dienen, das mittelbar oder unmittelbar an einem Ständer 15 für die Aufnahmevorrichtung 7 gelagert sein kann und eine horizontale Verstellung der zweiten Ablagevorrichtung 12 ermöglicht.The storage devices 9, 12 are each horizontally adjustable to be in a position for the treating person. This can be done with regard to the second storage device 12 serve a toggle linkage 14, the indirect or can be mounted directly on a stand 15 for the receiving device 7 and a horizontal adjustment of the second storage device 12 enables.

Ein elektrisches und gegebenenfalls auch hydraulisches und/oder pneumatisches Steuergerät 16 kann z.B. in den Ständer 15 integriert sein, daß durch sog. flexible Versorgungsschläuche mit den nicht dargestellten Behandlungsinstrumenten verbunden ist.An electrical and possibly also hydraulic and / or pneumatic Controller 16 can e.g. be integrated in the stand 15 that by so-called. Flexible Supply hoses are connected to the treatment instruments, not shown.

Zur Halterung der ersten Ablagevorrichtung 9 ist ein gerader, sich aufwärts schräg erstreckender Tragarm 17 vorgesehen, der um eine vertikale Drehachse 18 in einem Drehgelenk 19 frei drehbar mit einem etwa horizontalen Auslegerarm 21 verbunden ist, der um eine vertikale Schwenkachse 22 schwenkbar in einem seitlichen Schwenkgelenk 23 mit dem Behandlungsstuhl 2 bzw. dessen Basisteil verbunden ist, das im mittleren Längsbereich des Behandlungsstuhls 2 angeordnet sein kann. Die Ablagevorrichtung 9, der Tragarm 17 und der Auslegerarm 21 bilden eine allgemein mit 10 bezeichnete Tragvorrichtung für ein oder mehrere Behandlungswerkzeuge.To hold the first storage device 9 is a straight, obliquely upward extending support arm 17 is provided, which about a vertical axis of rotation 18 in one Swivel joint 19 is freely rotatably connected to an approximately horizontal cantilever arm 21, which is pivotable about a vertical pivot axis 22 in a lateral pivot joint 23 is connected to the treatment chair 2 or its base part, which is in the middle Longitudinal region of the treatment chair 2 can be arranged. The storage device 9, the Support arm 17 and the cantilever arm 21 form a generally designated 10 Carrying device for one or more treatment tools.

Die erste Ablagevorrichtung 9 ist um eine vertikale Drehachse 24 in einem weiteren Drehgelenk 25 auf dem Tragarm 17 horizontal frei drehbar gelagert. Aufgrund des horizontalen Abstands zwischen dem Schwenkgelenk 23 und dem Drehgelenk 19 einerseits sowie zwischen letzterem und dem Drehgelenk 25 andererseits läßt sich in den vorgegebenen Schwenk- und Drehbereichen die Ablagevorrichtung 9 mit einer manuellen Schub- oder Zugkraft wahlweise horizontal verstellen, wobei sie in jeder Verstellposition verbleibt. Außerdem ist der Tragarm 17 durch eine integrierte Höheneinstellvorrichtung 26 in seiner Längsrichtung verstellbar bzw. teleskopierbar und in der jeweiligen Verstellposition feststellbar. Somit läßt sich die Ablagevorrichtung 9 auch in eine jeweils vorteilhafte Höhenlage einstellen.The first storage device 9 is about a vertical axis of rotation 24 in another Swivel joint 25 is freely rotatably supported on the support arm 17. Because of the horizontal distance between the swivel joint 23 and the swivel joint 19 on the one hand and between the latter and the pivot 25 on the other hand can be in the predetermined pivoting and rotating ranges, the storage device 9 with a manual You can adjust the pushing or pulling force horizontally, in any adjustment position remains. In addition, the support arm 17 is by an integrated height adjustment device 26 adjustable in its longitudinal direction or telescopic and in the respective Adjustment position lockable. Thus, the storage device 9 can also be in each case set advantageous altitude.

Die axiale Verstellbarkeit und Einstellbarkeit des Tragarms 17 wird dadurch ermöglicht, daß er als Teleskopvorrichtung 27 mit zwei Teleskopteilen 27a, 27b ausgebildet ist, die in einer koaxialen oder axparallelen Führung 28 axial verschiebbar aneinander geführt sind. Von den im Bereich der Führung 28 einander überlappenden Teleskopteilen 27a, 27b ist das untere Teleskopteil 27a starr mit einem Basisteil 29 verbunden, das das dem Tragarm 17 zugehörige Gelenkteil des Drehgelenks 19 bildet. In vergleichbarer Weise ist das obere Teleskopteil 27b starr mit einem Kopfteil 31 verbunden, das das dem Tragarm 17 zugehörige Gelenkteil des Drehgelenks 25 bildet.The axial adjustability and adjustability of the support arm 17 is made possible that it is designed as a telescopic device 27 with two telescopic parts 27a, 27b, which in a coaxial or axially parallel guide 28 are axially displaceable. Of the telescopic parts 27a, 27b which overlap in the region of the guide 28 the lower telescopic part 27a rigidly connected to a base part 29, which is the support arm 17 associated joint part of the rotary joint 19 forms. Similarly, the top one is Telescopic part 27b rigidly connected to a head part 31, which is the support arm 17th associated joint part of the swivel 25 forms.

Wie insbesondere aus den Fig. 4 und 5 zu entnehmen ist, sind die Teleskopteile 27a, 27b durch Profile gebildet, vorzugsweise in Form von ineinandergreifenden Halbschalen 32, 33, von denen die äußere Halbschale 32, die hier das untere Teleskopteil 27a bildet, in ihren Endbereichen zwei einander gegenüberliegende Führungsnuten 34 aufweist und in ihrem Grundbereich vorzugsweise auch eine weitere Führungsnut 35 aufweist, in denen an der inneren Halbschale 33 angeordnete und nach außen vorstehende Führungsköpfe 36 einfassen, bei denen es sich um Gleitsteine oder um Rollen handeln kann, die an die innere Halbschale 33 in Löchern durchfassenden Schrauben 37 befestigt oder gelagert sein können.As can be seen in particular from FIGS. 4 and 5, the telescopic parts 27a, 27b formed by profiles, preferably in the form of interlocking half-shells 32, 33, of which the outer half-shell 32, which here forms the lower telescopic part 27a, in has two opposite guide grooves 34 in its end regions and in its base region preferably also has a further guide groove 35, in which of the inner half shell 33 and outwardly projecting guide heads 36 border, which can be sliding blocks or roles attached to the inner Half-shell 33 can be fastened or supported in screws 37 that pass through holes can.

Die vorerwähnte Höheneinstellvorrichtung 26 ist im Bereich der Führung 28 zwischen den Teleskopteilen 27a, 28a angeordnet und funktionell wirksam, wobei sie eine zwischen den Teleskopteilen 27a, 27b wirksame Verbindungsvorrichtung, hier in Form einer Verrastungsvorrichtung 38 und besondere Betätigungsmechanismen für die Verrastungsvorrichtung 38 aufweist. The aforementioned height adjustment device 26 is in the region of the guide 28 between the Telescopic parts 27a, 28a arranged and functionally effective, being one between the Telescopic parts 27a, 27b effective connecting device, here in the form of a Locking device 38 and special actuation mechanisms for the Has locking device 38.

Die Verrastungsvorrichtung 38 weist eine Verrastungsnase 41 am einen Teleskopteil, hier am oberen Teleskopteil 27b und eine Lochleiste 42 mit einer Vielzahl axial hintereinander angeordneten und vorzugsweise gleiche Abstände voneinander aufweisenden Rastlöchern 43, in die die Verrastungsnase 41 mit geringem Bewegungsspiel lösbar einzurasten vermag, wobei die Lochleiste 42 hier am unteren Teleskopteil 27a befestigt ist. Wie insbesondere Fig. 5 zeigt, ist die Lochleiste 42 eine flache Platte, die mit den freien Seitenrändern der äußeren Halbschale verschraubt ist, die Teil des unteren Teleskopteils 27a ist. Zwischen der äußeren Halbschale 32 und der Lochleiste 42 befindet sich die innere Halbschale 33, in deren Freiraum 44 die Verrastungsnase 41 an einem Verrastungsbolzen 45 in einer Querführung 46 eines Führungskörpers 47 quer verschiebbar gelagert ist, der am Grund der inneren Halbschale 33 befestigt ist, hier in ein Loch 48 in der Halbschale 33 fest eingesetzt ist.The locking device 38 has a locking lug 41 on a telescopic part, here on the upper telescopic part 27b and a perforated strip 42 with a plurality of axially one behind the other arranged and preferably the same distances from each other locking holes 43, in which the latching nose 41 can be releasably engaged with little movement play capable, the perforated strip 42 is attached here to the lower telescopic part 27a. How 5 shows, in particular, the perforated strip 42 is a flat plate which is connected to the free Side edges of the outer half-shell is screwed to the part of the lower telescopic part 27a is. The inner is between the outer half-shell 32 and the perforated strip 42 Half-shell 33, in the free space 44, the locking lug 41 on a locking bolt 45 is transversely slidably mounted in a transverse guide 46 of a guide body 47 attached to the bottom of the inner half-shell 33, here in a hole 48 in the half-shell 33 is firmly used.

Die Verrastungsnase 41 weist an ihrer Stirnseite eine nach oben verlaufende schräge oder gerundete Anlauffläche 49 auf, und sie ist durch eine Feder 51 in ihre Verrastungsstellung vorgespannt. Diese Vorbewegung ist durch einen Anschlag 52 begrenzt, der so bemessen ist, daß die Verrastungsnase 41 in das jeweilige Verrastungsloch 43 soweit eintaucht, daß der obere Lochrand der Anlauffläche 49 gegenüberliegt.The latching lug 41 has an upward sloping or rounded contact surface 49 and it is in its locked position by a spring 51 biased. This advance movement is limited by a stop 52 which is dimensioned in this way is that the locking lug 41 so far immersed in the respective locking hole 43 that the upper edge of the hole is opposite the contact surface 49.

Der Verrastungsnase 41 ist eine Entrastungsvorrichtung 50 und eine Rückhaltevorrichtung 53 zugeordnet, die die Verrastungsnase 41 entrasten und in einer zurückgezogenen Position fixieren, in der sie nicht in die Verrastungslöcher 43 einrasten kann. Die Entrastungsvorrichtung 50 und die Rückhaltevorrichtung 53 gelangen in der oberen Hub-Endstellung des Tragarms 17 selbstätig in ihre die Verrastungsnase 41 entrastenden und zurückhaltenden Funktionen.The latching lug 41 is a release device 50 and a restraint device 53 assigned, which unlatch the locking lug 41 and in a retracted Fix position in which it can not snap into the locking holes 43. The Unlatching device 50 and the restraint device 53 reach the upper stroke end position of the support arm 17 automatically in their latching nose 41 and reserved functions.

In der oberen Hub-Endstellung des Tragarms 17 ist an der Innenseite der Lochleiste 42 ein die Entrastungsvorrichtung 50 bildendes Anschlagteil 50a, vorzugsweise mit einer Anlaufschräge 50b, so angeordnet und vorzugsweise verschraubt, daß beim Auseinanderziehen des Tragarms 17 in seine obere Hub-Endstellung die Verrastungsnase 41 gegen das Anschlagteil 50a stößt und von diesem in die in Fig. 7 dargestellte zurückgezogene Stellung gedrängt und entrastet wird.In the upper stroke end position of the support arm 17 is on the inside of the perforated strip 42 the detaching device 50 forming stop part 50a, preferably with a Starting slope 50b, arranged and preferably screwed so that when Pulling the support arm 17 into its upper stroke end position, the latching lug 41 abuts the stop part 50a and from it into that shown in FIG. 7 retracted position is pushed and unlatched.

Die Rückhaltevorrichtung 53 ist durch eine Klemm- oder Verriegelungsvorrichtung 54 mit einem Verriegelungsglied 55 gebildet, das die Verrastungsnase 41 in ihrer zurückgezogenen Stellung hält oder vorzugsweise formschlüssig verriegelt. The restraint device 53 is connected by a clamping or locking device 54 a locking member 55 is formed, which the latching lug 41 in retracted position or preferably locked form-fitting.

Bei der vorliegenden Ausgestaltung ist die Verriegelungsvorrichtung 54 durch einen sich axial zum Tragarm 17 erstreckenden und im Verrastungsbolzen 45 in einem Schlitz 56 durchfassenden Verriegelungsbolzen 57 gebildet, dessen Verriegelungskopf 58 am oberen Ende des Bolzens 57 angeordnet ist und durch eine Feder 59 gegen den Verrastungsbolzen 45 vorgespannt ist. Der Verriegelungsbolzen 57 ist in zugehörigen Löchern 61a, 61b des Führungskörpers 47 in vertikaler Richtung verschiebbar geführt, wobei er den Verrastungsbolzen 45 mit Bewegungsspiel im Schlitz 56 durchfaßt. Die Feder 59, hier eine Druckfeder, ist in einem oberseitigen Anbauteil 47a des Führungskörpers 47 abgestützt. Der Schaft 57a des Verriegelungsbolzens 57 überragt den Führungskörper 47 nach unten um ein bestimmtes, durch die Verriegelungsbewegung vorgegebenes Maß, hier mehrere Millimeter. An der dem Kopf 58 zugewandten Seite weist der Verrastungsbolzen 45 eine Verriegelungsausnehmung 64 auf, die zu beiden Seiten des Schlitzes 56 Vertiefungen bildet, in die der Kopf 58 einzutauchen vermag, wie es aus Fig. 7 zu entnehmen ist, gemäß der der Kopf 58 sich in der Verriegelungsausnehmung 64 befindet und der Verrastungsbolzen 45 in seiner zurückgezogenen Stellung verriegelt ist.In the present embodiment, the locking device 54 is by itself extending axially to the support arm 17 and in the latching bolt 45 in a slot 56 comprehensive locking bolt 57 formed, the locking head 58 at the top End of the bolt 57 is arranged and by a spring 59 against the locking bolt 45 is biased. The locking bolt 57 is in associated holes 61a, 61b of the Guide body 47 guided in the vertical direction, wherein he Locking bolt 45 with movement play in slot 56. The spring 59, here one Compression spring is supported in an attachment 47a of the guide body 47 on the upper side. The shaft 57a of the locking bolt 57 projects downward over the guide body 47 by a certain amount, predetermined by the locking movement, here several Millimeter. On the side facing the head 58, the locking bolt 45 has one Locking recess 64 on, 56 recesses on both sides of the slot forms, into which the head 58 can dip, as can be seen from FIG. 7, according to which the head 58 is in the locking recess 64 and the Locking bolt 45 is locked in its retracted position.

In seiner durch die Entrastungsvorrichtung 50 zurückgezogenen Stellung rastet der Kopf 58 aus seiner an der Oberseite des Verrastungsbolzens 45 anliegenden Stellung unter der Kraft der Feder 59 selbstätig in die Verriegelungsausnehmung 64 ein, wobei er den Verrastungsbolzen 59 in dieser Stellung verriegelt.In its position retracted by the unlatching device 50, the head snaps 58 from its position at the top of the locking bolt 45 under the Force of the spring 59 automatically into the locking recess 64, whereby he Locking bolt 59 locked in this position.

Der Rückhaltevorrichtung 53 ist in der unteren Hub-Endstellung des Tragarms 17 eine Lösevorrichtung 65 zum Lösen der Verriegelungsvorrichtung 54 ebenfalls im Freiraum 44 zugeordnet, wobei die Lösevorrichtung 65 durch einen Anschlag 66 gebildet ist, der in einfacher Weise durch einen von der Lochleiste 42 abgebogenen Schenkel 67 gebildet sein kann.The restraint device 53 is in the lower stroke end position of the support arm 17 Release device 65 for releasing the locking device 54 also in the free space 44 assigned, wherein the release device 65 is formed by a stop 66 which in be formed simply by a leg 67 bent from the perforated strip 42 can.

Im folgenden wird die Funktion der Höheneinstellvorrichtung 26 ausgehend aus der in Fig. 7 oben dargestellten oberen Hub-Endstellung des Tragarms 17 beschrieben.In the following, the function of the height adjustment device 26 is described on the basis of the 7 described above upper stroke end position of the support arm 17.

Um aus dieser Hub-Endstellung eine geringere Höhe einzustellen ist es erforderlich, den Tragarm 17 in die untere Hub-Endstellung zusammenzuschieben, der der Verriegelungsbolzen 57 gegen den Anschlag 66 trifft und dadurch in seine obere Entriegelungsstellung verschoben wird, so daß der Verrastungsbolzen 45 unter der Spannung der Feder 51 selbstätig in eine Verrastungs-Bereitschaftsstellung und hier in das zugehörige Verrastungsloch 43 einzurasten vermag, wobei seine Vorbewegung durch die Anlage des durch das linke Schlitzende gebildeten Anschlags 52 am Schaft 57a des Verriegelungsbolzen 57 begrenzt ist. Aus dieser Stellung kann der Tragarm 17 um ein gewünschtes Maß auseinander gezogen werden, wobei die Verrastungsnase 41 von Verrastungsloch 43 zu Verrastungsloch 43 durch den jeweils gegenüberliegenden Rand des jeweiligen Verrastungslochs 43 in seine Freigabestellung verdrängt wird und dann wieder in das nächste Verrrastungsloch 43 einrastet. Während dieser Bewegungen kann der Verriegelungskopf 58 nicht in die Verriegelungsausnehmung 64 einrasten, da der Verriegelungskopf 58 bezüglich der Verriegelungsausnehmung 64 noch seitlich versetzt an der Oberseite des Verrastungsbolzens 45 anliegt.In order to set a lower height from this stroke end position, it is necessary to Push arm 17 into the lower stroke end position, which the Locking bolt 57 hits the stop 66 and thereby in its upper Unlocked position is moved so that the locking bolt 45 under the Tension of the spring 51 automatically in a latching standby position and here in that associated locking hole 43 is able to engage, its advance through the Contact of the stop 52 formed by the left slot end on the shaft 57a of the Locking bolt 57 is limited. From this position, the support arm 17 around desired dimension are pulled apart, the locking lug 41 of Locking hole 43 to locking hole 43 through the respective opposite edge of the respective locking hole 43 is displaced into its release position and then again snaps into the next latching hole 43. During these movements, the Do not snap the locking head 58 into the locking recess 64 since the Locking head 58 still laterally offset with respect to the locking recess 64 abuts the top of the locking bolt 45.

Soll eine geringere Höhe des Tragarms 17 eingestellt werden, dann ist der Tragarm 17 zunächst in seine obere Hub-Endstellung zu bewegen, in der die Entrastungsvorrichtung 50 Rückhaltevorrichtung 53 in Funktion treten, dann in seine untere Hub-Endstellung zu bewegen, in der die Rückhaltevorrichtung 54 außer Funktion gesetzt wird, und dann um ein gewünschtes Maß auseinanderzuziehen, um die gewünschte Höhe zu erreichen, in der die Verrastungsvorrichtung 38 selbsttätig einrastet.If a lower height of the support arm 17 is to be set, then the support arm 17 first to move into its upper stroke end position, in which the unlatching device 50 Retainer 53 function, then in its lower stroke end position move in which the retainer 54 is deactivated, and then around pull a desired dimension apart to achieve the desired height at which the locking device 38 engages automatically.

Der zwischen der Längsachse 17a des Tragarms 17 und der Vertikalen eingeschlossene spitze Winkel W beträgt insbesondere etwa 45 bis 75°, vorzugsweise etwa 60°.The one enclosed between the longitudinal axis 17a of the support arm 17 and the vertical acute angle W is in particular about 45 to 75 °, preferably about 60 °.

Der Behandlungsstuhl 2 kann wahlweise in Rechts- oder Links-Ausführung ausgebildet werden. Ein entsprechendes Schwenkgelenk 23 ist auf der anderen Seite des Behandlungsstuhls spiegelbildlich angeordnet oder vorbereitet.The treatment chair 2 can optionally be designed as a right or left version become. A corresponding swivel joint 23 is on the other side of the Treatment chair arranged in mirror image or prepared.

Die Dreh- und Schwenkebenen der vorbeschriebenen Gelenke müssen nicht unbedingt exakt horizontal verlaufen, da auch beträchtliche Abweichungen funktionsfähig sind, solange die Ablagevorrichtung 9 in ihrer jeweils eingestellten Stellung aufgrund der der Schwerkraft entgegenwirkenden Reibungskraft in den Gelenken stehen bleibt.The levels of rotation and pivoting of the joints described above do not necessarily have to be run exactly horizontally, since considerable deviations are functional, as long as the storage device 9 in its respectively set position due to the Gravity counteracts friction in the joints.

Der Tragarm 17 kann in einem so großen seitlichen Abstand a vom Behandlungsstuhl 2 bzw. seinem Basisteil gelagert sein, daß sein oberer Endbereich oder die von ihm getragene Ablagevorrichtung 9 sich über dem Behandlungsstuhl 2 in dessen Basisstellung befindet, wenn der Tragarm 17 zum Behandlungsstuhl 2 hin gedreht angeordnet ist. Würde der Behandlungsstuhl 2 in einer solchen Stellung des Tragarms 17 mittels einer allgemein mit 2b bezeichneten Hubvorrichtung mit einem elektrisch betriebenen Antriebsmotor angehoben werden, dann würde er mit dem oberen Ende des Tragarms 17 oder mit der darauf gelagerten Ablagevorrichtung 9 kollidieren. Um dies zu vermeiden, ist dem Behandlungsstuhl 2 eine elektrische Hub-Abschaltvorrichtung 71 zugeordnet, die dann, wenn der Sitzkörper 2a oder ein Anbauteil desselben gegen den Tragarm 17 oder die Ablagevorrichtung 9 oder ein Anbauteil derselben stößt, die Hubvorrichtung 2b abschaltet. The support arm 17 can be at such a large lateral distance a from the treatment chair 2 or its base part, that its upper end region or that of it worn storage device 9 over the treatment chair 2 in its basic position located when the support arm 17 is arranged rotated toward the treatment chair 2. Would the treatment chair 2 in such a position of the support arm 17 by means of a general with 2b designated lifting device with an electrically operated drive motor would then be raised with the upper end of the support arm 17 or with the the storage device 9 on it collide. To avoid this, the Treatment chair 2 is assigned an electrical lift switch-off device 71, which then if the seat body 2a or an attachment thereof against the support arm 17 or the Storage device 9 or an attachment of the same bumps, the lifting device 2b switches off.

Die Abschaltvorrichtung 71 kann hierzu einen berührungslosen Schalter oder einen Berührungsschalter 72 aufweisen, wie es bei der vorliegenden Ausgestaltung der Fall ist. Dabei kann der Berührungsschalter 72 direkt zwischen dem Sitzkörper 2a oder einem Anbauteil desselben und dem Tragarm 17 bzw. der Ablagevorrichtung 9 angeordnet sein oder - wie beim vorliegenden Ausführungsbeispiel - zwischen zwei beweglichen Teilen der Tragarmanordnung vorgesehen sein.The switch-off device 71 can be a contactless switch or a switch Have touch switches 72, as is the case with the present embodiment. The touch switch 72 can be directly between the seat body 2a or one Attachment of the same and the support arm 17 or the storage device 9 may be arranged or - as in the present embodiment - between two movable parts of the Support arm arrangement may be provided.

Der Schalter 72 ist vorteilhaft im Fußbereich des Tragarms 17 angeordnet. Wie insbesondere aus Fig. 8 zu entnehmen ist, weist das Basisteil 29 des Tragarms 17 einen die Schräglage des Tragarms 17 vorgebenden schrägen Tragstab 73 auf, der vorzugsweise einstückig an einem Lagerring 74 des Basisteils 29 angeformt ist und von diesem schräg aufwärts gerade absteht. Der Tragstab 73 ist ein Profilstück, auf das das untere Teleskopteil 27a im Sinne einer Steckfassung von oben aufgesteckt ist. Dabei hintergreift das halbschalenförmige Teleskopteil 27a den Tragstab 73 auf seiner einen Seite, während die freien, nach innen gerichteten Ränder 27a1 des Teleskopteils 27a den Tragstab 73 auf dessen anderer Seite, hier der von oben sichtbaren Schrägseite, hintergreifen. Zwischen dem Teleskopteil 27a und dem Tragstab 73 ist ein beträchtliches Bewegungsspiel S in der vertikalen Neigungsebene N (Fig. 9) vorgesehen, so daß das Teleskopteil 27a bzw. der Tragarm 17 insgesamt relativ zum Tragstab 73 bzw. zum zugehörigen Drehgelenk 19 in der Neigungsebene N kippbar ist, wobei aufgrund der Neigung und der in dieser Stellung vorhandenen Schwerkraft das Teleskopteil 27a bzw. der Tragarm 17 in seiner Ausgangsstellung eine dem Behandlungsstuhl 2 zugewandte Kipp-Endstellung einnimmt. Wenn der Sitzkörper 2a gegen den Tragarm 17 oder die Ablagevorrichtung 9 stößt, führt der Tragarm 17 eine schräg nach oben gerichtete Kippbewegung (Pfeil 75) aus, die zum Schalten des zwischen dem Teleskopteil 27a und dem Tragstab 73 angeordneten Schalters 72 ausgenutzt wird, durch dessen Schaltkontakt der nicht dargestellte elektrische Antrieb für die Hubvorrichtung 2b ausgeschaltet wird. Bei dieser Kippbewegung kippt bzw. schwenkt das Teleskopteil 27a bzw. der Tragarm 17 um eine im Fußbereich horizontal und quer zur Neigungsebene N gerichtete Kippachse 77, die sich im Fußbereich aufgrund des Bewegungsspiels N ergibt.The switch 72 is advantageously arranged in the foot region of the support arm 17. How 8, the base part 29 of the support arm 17 has a Oblique position of the support arm 17 predetermined inclined support rod 73, which is preferably is integrally formed on a bearing ring 74 of the base part 29 and obliquely from this protrudes straight up. The support rod 73 is a profile piece on which the lower Telescopic part 27a is plugged on from above in the sense of a jack. It reaches behind the half-shell-shaped telescopic part 27a, the support rod 73 on one side, while the free, inwardly directed edges 27a1 of the telescopic part 27a on the support rod 73 reach behind the other side, here the oblique side visible from above. Between the telescopic part 27a and the support rod 73 is a considerable movement S in the vertical inclination plane N (Fig. 9) is provided so that the telescopic part 27a or Support arm 17 overall relative to the support rod 73 or to the associated swivel joint 19 in the inclination plane N is tiltable, due to the inclination and in this position existing gravity, the telescopic part 27a or the support arm 17 in its Starting position assumes a tilting end position facing the treatment chair 2. If the seat body 2a abuts the support arm 17 or the storage device 9, leads the support arm 17 an obliquely upward tilting movement (arrow 75), which for Switching the switch arranged between the telescopic part 27a and the support rod 73 72 is used by the switching contact of the electric drive, not shown is switched off for the lifting device 2b. During this tilting movement pivots the telescopic part 27a or the support arm 17 horizontally and in the foot area transverse to the inclination plane N directed tilt axis 77, which is due to the Movement play N results.

Es ist vorteilhaft, die Kippachse 77 durch ein Kippgelenk 78 zu definieren. Dies ist bei der vorliegenden Ausgestaltung durch zwei Schrauben 79 bewerkstelligt, die horizontal nebeneinander angeordnet sind und die Randleisten 27a1 mit einem Bewegungsspiel S1 in Löchern 81 durchfassen, in Gewindelöcher 82 im Tragstab 73 eingeschraubt sind und mit ihren Köpfen 79a die Randleisten 27a1 mit einem Bewegungsspiel S2 hintergreifen. Hierdurch ist das Teleskopteil 27a bzw. der Tragarm 17 um die im Bereich der Schrauben 79 verlaufende Kippachse 77 kippbar. Wenn das Teleskopteil 27a mit seiner Unterseite auf dem Lagerring 74 aufliegt, kann sich eine Verlagerung der Kippachse 77 zur Unterseite des Teleskopteils 27a hin ergeben. Deshalb kann die Kippachse 77 auch am der Drehachse zugewandten Rand des Teleskopteils 27a angeordnet sein. Diese Kippstelle ist in Fig. 8 mit 83 bezeichnet.It is advantageous to define the tilt axis 77 by means of a tilt joint 78. This is with the present embodiment accomplished by two screws 79, the horizontal are arranged side by side and the edge strips 27a1 with a play S1 in Pass through holes 81, are screwed into threaded holes 82 in the support rod 73 and with their heads 79a engage the edge strips 27a1 with a play S2. As a result, the telescopic part 27a or the support arm 17 is in the region of the screws 79 extending tilt axis 77 tiltable. When the telescopic part 27a with its underside on the bearing ring 74 rests, a shift of the tilt axis 77 to Underside of the telescopic part 27a result. Therefore, the tilt axis 77 can also be arranged on the edge of the telescopic part 27a facing the axis of rotation. This Tilting point is designated 83 in FIG. 8.

Der Schalter 76 ist in einem nach oben gerichteten Abstand von der Kippachse 77, 83 im oberen Endbereich des Tragstabs 73 angeordnet. Bei der vorliegenden Ausgestaltung ist der Schalter 76 am Tragstab 73 befestigt, wobei ein Schaltteil 76a in die Schalt-Kippbewegungsrichtung des Pfeiles 75 weist und mit der zugehörigen Randleiste 27a1 als Schaltteil zusammenwirkt. Vorzugsweise ist an der Randleiste 27a1 ein im Sinne der Schaltrichtung verstellbares und einstellbares Schaltteil vorgesehen. Bei der vorliegenden Ausgestaltung ist eine Einstellschraube 84 vorgesehen, die in ein Gewindeloch 85 in der zugehörigen Randleiste 27a1 eingeschraubt ist und deren Kopf zur Verstellung und Einstellung der Schraube 84 zugänglich ist.The switch 76 is at an upward distance from the tilt axis 77, 83 arranged in the upper end region of the support rod 73. In the present In the embodiment, the switch 76 is fastened to the support rod 73, a switching part 76a points in the switching-tilting direction of arrow 75 and with the associated Edge strip 27a1 cooperates as a switching part. Preferably on the sidebar 27a1 a switching part which is adjustable and adjustable in the sense of the switching direction intended. In the present embodiment, an adjustment screw is 84 provided in a threaded hole 85 in the associated edge strip 27a1 is screwed in and its head for adjusting and adjusting the screw 84 is accessible.

Vorzugsweise sind zwischen den Schraubenköpfen 79a und den Randleisten 27a1 Federn 80, hier Tellerfedern angeordnet.Preferably between the screw heads 79a and the edge strips 27a1 Springs 80, here disc springs arranged.

Das obere Teleskopteil 27b ist durch ein Schutzrohr 87 umgeben, das starr am Kopfteil 31 befestigt ist und das obere Ende des unteren Teleskopteils 27a überlappt, das mit dem oberen Schutzrohr 87 einen Teleskop-Schutzmantel bildet.The upper telescopic part 27b is surrounded by a protective tube 87 which is rigidly on Head part 31 is fixed and the upper end of the lower telescopic part 27 a overlaps, that forms a telescopic protective jacket with the upper protective tube 87.

Die Höhenverstellvorrichtung 26 ist manuell oder durch einen insbesondere elektrischen Antriebsmotor höhenverstellbar, der vorzugsweise im Tragarm 17 oder zwischen dem Tragarm 17 und der Ablagevorrichtung 9 oder im Fußbereich des Tragarms 17 angeordnet ist und durch ein Betätigungselement ein- oder ausschaltbar ist, das von der Bedienungsperson, z.B. dem Arzt oder der Helferin, betätigbar ist, z.B. ein Fußschalter.The height adjustment device 26 is manual or by a particular one electric drive motor adjustable in height, preferably in the support arm 17 or between the support arm 17 and the storage device 9 or in the foot area of the Support arm 17 is arranged and can be switched on or off by an actuating element by the operator, e.g. the doctor or helper can be operated, e.g. a foot switch.

Claims (22)

  1. Medical or dental-medical treatment chair (2) having a repository device (9) for at least one treatment tool, which repository device is arranged with regard to the treatment chair (2) in a lateral position on a carrier arm (17) which is carried by a carrier (21) which is mounted horizontally adjustably, in particular on the treatment chair (2),
    wherein the repository device (9) is mounted rotatably relative to the carrier arm (17) and/or the carrier arm (17) is mounted rotatably relative to the carrier (21), in each case around an approximately vertical joint axis (24 or 18) of a joint (25 or 19),
    wherein the carrier arm (17) is constituted as a telescopic device (27) and is adjustable in its length along its longitudinal axis by means of a height setting device (26) and is fixable in the respective adjusted position by means of a fixing device (38), and wherein the carrier arm (17) stands up substantially vertically or obliquely and the fixing device (38) is constituted by means of a latching device, which has in the longitudinal direction of the telescopic device (27) latching edges or latching recesses lying one behind another, into or behind which a latching nose can be releasably latched.
  2. Medical or dental-medical treatment chair (2) according to claim 1,
    characterized in that,
    the latching device has a holed strip (42) into the latching holes (43) of which the latching nose (41), mounted moveably between a latching position and a released position, can be latched under the force of a spring (51).
  3. Medical or dental-medical treatment chair according to claim 2,
    characterized in that,
    the carrier arm (17) extends obliquely upwardly and its middle axis (17a) includes with the horizontal an acute angle (W) which is in particular about 45° to 75°, in particular about 60°.
  4. Medical or dental-medical treatment chair according to claim 2 or 3,
    characterized in that,
    the carrier (21) is mounted adjustably on the treatment chair (2), longitudinally and/or transversely of the treatment chair (2).
  5. Medical or dental-medical treatment chair according to any of preceding claims 2 to 4,
    characterized in that,
    the carrier is constituted by an approximately horizontal extension arm (21) which is mounted pivotably around an approximately vertical pivot axis (22) in a pivot joint (23) on the treatment chair (2).
  6. Medical or dental-medical treatment chair according to any of preceding claims 2 to 5,
    characterized in that,
    the latching device has associated therewith in the upper stroke or telescope position a latching device (50) and a locking device (54) for locking the latching nose (41) in its release position and in the lower stroke or telescope position has associated therewith an unlocking device (65).
  7. Medical or dental-medical treatment chair according to claim 6,
    characterized in that,
    the unlocking device (50) is constituted by means of a stop part (50a) for the latching nose (41), which stop part has in particular a lead-in surface (50b) and is preferably arranged on the holed strip (42).
  8. Medical or dental-medical treatment chair according to claim 6 or 7,
    characterized in that,
    the locking device (54) has a locking bolt (57) which is guided displaceable transversely of the latching nose (41) between a locking disposition and a release disposition, and is acted on by means of the force of a spring (59) into its locking disposition, wherein there is arranged on the locking nose (41) a locking edge (64) which in the release disposition of the latching nose (41) engages behind the locking bolt (57).
  9. Medical or dental-medical treatment chair according to any of claims 6 to 8,
    characterized in that,
    the locking bolt (57) penetrates the latching nose (41) in a transverse slot (56) and projects downwardly.
  10. Medical or dental-medical treatment chair according to any of claims 6 to 9,
    characterized in that,
    the unlocking device (65) is constituted by means of a stop (66) which co-operates with the locking bolt (57) or its shaft (57a).
  11. Medical or dental-medical treatment chair according to any of preceding claims 2 to 10,
    characterized in that,
    the telescope device (27) has two telescope parts (27a, 27b) which are displaceably guided on one another in a longitudinal guide (28).
  12. Medical or dental-medical treatment chair according to claim 11,
    characterized in that,
    the lower telescope part (27a) is connected non-moveably with a base part (29) and the upper telescope part (27b) is connected non-moveably to a head part (31) of the carrier arm (17), wherein the base part (29) constitutes a joint part, belonging to the carrier arm (17), of a lower rotary joint (19) and the head part (31) constitutes a joint part, belonging to the carrier arm (17), of an upper rotary joint (25).
  13. Medical or dental-medical treatment chair according to any of preceding claims 2 to 12,
    characterized in that,
    the one, in particular the lower, telescope part (27a) has an outer half-shell (32) and the other telescope part (27b), in particular the upper telescope part (27b), has an inner half-shell (33), of which the inner half-shell (33) is arranged in the outer one, and which are preferably constituted by means of profile sections.
  14. Medical or dental-medical treatment chair according to any of preceding claims 2 to 13,
    characterized in that,
    the carrier arm (17) is adjustable so far towards the treatment chair (2) that its upper end region or the repository device (9) or a component mounted on the carrier arm (17) are located above the seat body (2a) of the treatment chair (2) or a component mounted thereon.
  15. Medical or dental-medical treatment chair (2) according to any of preceding claims 1 to 14,
    characterized in that,
    a carrier device (10) of the repository device (9) is located above the treatment chair (2) or is approximately horizontally adjustable above the treatment chair (2) and there is associated with the treatment chair (2) an electrical cut-off device (71) for the electric drive of its stroke movement (2b) which effects a cut-off function when the treatment chair (2) or a component mounted thereon approaches the repository device (9) beyond a certain extent or impacts against the repository device (9).
  16. Medical or dental-medical treatment chair according to claim 15,
    characterized in that,
    the cut-off device (71) has a switch (72) which is effective contactlessly or with contact.
  17. Medical or dental-medical treatment chair according to claim 16,
    characterized in that,
    the carrier device (10) has two device parts, arranged moveable relative to one another, in particular tiltable, and the switch (72) is arranged between these device parts.
  18. Medical or dental-medical treatment chair according to claim 17,
    characterized in that,
    the moveable device part (27a) is acted upon by gravity or by means of the force of a spring (80), into its initial disposition.
  19. Medical or dental-medical treatment chair according to claim 17 or 18,
    characterized in that,
    the carrier device (10) has the carrier arm (17), which is tiltably mounted in its foot region, and the switch is arranged in the tiltable foot region of the carrier arm (17).
  20. Medical or dental-medical treatment chair according to claim 19,
    characterized in that,
    the carrier arm (17) has a rotatably mounted base part (29), preferably rotatable around an approximately vertical joint axis (18), on which base part there is tiltably mounted a carrier arm part (27a) extending approximately upwardly, and the switch (76) is arranged between the base part (29) and the carrier arm part (27a).
  21. Medical or dental-medical treatment chair according to claim 20,
    characterized in that,
    the base part (29) has an upwardly projecting carrier rod (73) on which the carrier arm part (27a) sits with play for movement (5).
  22. Medical or dental-medical treatment chair according to any of preceding claims 2 to 21,
    characterized in that,
    the height adjustment device (26) is height adjustable manually or by means of a drive motor, in particular an electric drive motor, which is preferably arranged in the carrier arm (17) or between the carrier arm (17) and the repository device (9) or in the foot region of the carrier arm (17) and can be switched on or switched off by means of an actuating element.
EP98114326A 1997-07-30 1998-07-30 Chair for medical or dental care Expired - Lifetime EP0895769B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29713579U DE29713579U1 (en) 1997-07-30 1997-07-30 Medical or dental treatment chair
DE29713579U 1997-07-30

Publications (3)

Publication Number Publication Date
EP0895769A2 EP0895769A2 (en) 1999-02-10
EP0895769A3 EP0895769A3 (en) 1999-12-01
EP0895769B1 true EP0895769B1 (en) 2004-07-28

Family

ID=8043911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114326A Expired - Lifetime EP0895769B1 (en) 1997-07-30 1998-07-30 Chair for medical or dental care

Country Status (2)

Country Link
EP (1) EP0895769B1 (en)
DE (2) DE29713579U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107374891B (en) * 2017-08-28 2019-08-27 贝思德迩医疗器材(广州)有限公司 A kind of department of stomatology inspection patients to lie chair
IT202200018645A1 (en) 2022-09-13 2024-03-13 Cefla Soc Cooperativa DENTAL TREATMENT UNIT COMPATIBLE WITH DIFFERENT CONNECTION BOXES
IT202200018648A1 (en) 2022-09-13 2024-03-13 Cefla Soc Cooperativa DENTAL TREATMENT UNIT COMPATIBLE WITH DIFFERENT CONNECTION BOXES

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0593791B1 (en) * 1992-10-12 1997-05-14 Siemens Aktiengesellschaft Device for displacing a dental apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES420701A1 (en) * 1973-11-12 1976-04-01 Camprubi Planas Improvements in the medical-surgical equipment for dentistry. (Machine-translation by Google Translate, not legally binding)
JPS60919Y2 (en) * 1981-08-14 1985-01-11 株式会社モリタ製作所 dental treatment table equipment
DE3316644A1 (en) * 1983-05-06 1984-11-08 Kaltenbach & Voigt Gmbh & Co, 7950 Biberach Safety device for a dental treatment unit
DE29520999U1 (en) * 1995-05-05 1996-09-05 Siemens AG, 80333 München Camera box for a dental treatment station

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0593791B1 (en) * 1992-10-12 1997-05-14 Siemens Aktiengesellschaft Device for displacing a dental apparatus

Also Published As

Publication number Publication date
DE59811703D1 (en) 2004-09-02
EP0895769A3 (en) 1999-12-01
EP0895769A2 (en) 1999-02-10
DE29713579U1 (en) 1998-12-17

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