EP0494328B1 - Device for holding and releasing a stowage tray, especially a stowage tray for dental instruments - Google Patents

Device for holding and releasing a stowage tray, especially a stowage tray for dental instruments Download PDF

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Publication number
EP0494328B1
EP0494328B1 EP19910100249 EP91100249A EP0494328B1 EP 0494328 B1 EP0494328 B1 EP 0494328B1 EP 19910100249 EP19910100249 EP 19910100249 EP 91100249 A EP91100249 A EP 91100249A EP 0494328 B1 EP0494328 B1 EP 0494328B1
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EP
European Patent Office
Prior art keywords
clamping
detent
holder
tray
stowage tray
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
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EP19910100249
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German (de)
French (fr)
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EP0494328A1 (en
Inventor
Marcus Dipl.-Ing. Baum
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Siemens AG
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Siemens AG
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Priority to DE59105054T priority Critical patent/DE59105054D1/en
Priority to DK91100249T priority patent/DK0494328T3/en
Priority to EP19910100249 priority patent/EP0494328B1/en
Publication of EP0494328A1 publication Critical patent/EP0494328A1/en
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Publication of EP0494328B1 publication Critical patent/EP0494328B1/en
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    • 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

Definitions

  • the invention relates to a device for holding and re-releasing a storage tray on or from a carrier, which has a footprint for supporting at least a part of the storage tray and which contains a recess adjacent to the footprint into which an edge part of the storage tray can be inserted and which also contains a clamping mechanism, which holds the tray by a clamping connection in the region of the edge part and releases this clamping connection when an unlocking device is actuated.
  • the carrier contains a displaceably held support part which has a horizontal support surface for the tray and adjacent the support surface contains a recess into which the edge end part of the storage tray engages in a form-fitting manner.
  • the carrier is also provided with a projection which is arranged at a distance from the depression corresponding to the edge height of the storage tray and which at least partially overlaps the upper surface of the edge when the storage tray is placed on it.
  • the lower edge end part of the tray is inserted into the recess of the slidably supported support part. Then the tray and the support part are moved in the direction of the projection and then pressed down, causing a pin of the support part at a stop another recess in the supporting part comes to rest. The removal takes place in reverse order, ie the supporting part and the tray have to be lifted slightly first, then the engagement connection must then be released.
  • the invention specified in claim 1 is based on the object to achieve an improvement and to provide a device of the type mentioned, in which it is ensured that the tray cannot unintentionally detach from the holder or can be accidentally detached.
  • the storage tray can be securely latched automatically in one-hand operation, remains securely in the latching position even in the event of accidental collision, and that the entire latching mechanism can be installed comparatively easily in a carrier without paying particular attention to the construction of the carrier needs.
  • FIGS. 1 to 3 show the device according to the invention in section, in three different phases, FIG. 1 showing the device in a position in which the storage tray has been inserted into the carrier but has not yet clicked into place, and FIGS. 2 and FIG. 3 show the device in a latching position on the one hand and in a removal position on the other hand.
  • An instrument storage tray 1 which is only shown in part in the drawing, is to be detachably latched onto a carrier 2.
  • the carrier 2 is provided with a recess 3, the height of which corresponds approximately to the height of the instrument tray 1.
  • the recess 3 forms on the bottom side a slightly protruding standing surface 4, on which the storage tray can be placed over at least part of its surface during the insertion phase.
  • the footprint 4 is dimensioned such that, together with the surface of the recess on the cover side, it already holds the storage tray sufficiently at the beginning of the insertion phase.
  • An actuating pin 5 is mounted horizontally displaceably in the carrier 2 approximately in the middle of the recess 3.
  • the actuating pin is operatively connected to a clamping lever 6 which is pivotally mounted in the carrier 2 and which in turn interacts with a sliding block 7.
  • the sliding block 7 is guided in a longitudinally displaceable manner in a base plate 8 mounted in the carrier 2, for which purpose corresponding guide strips 9 are provided on the side.
  • the clamping lever 6, which is tiltably mounted by means of a horizontal axle bearing 10, contains two angled legs, one of which has an actuating surface 11 which interacts with one end face of the actuating pin 5 and the other has a latching hook 12. The latter reaches through a recess 13 of the carrier 2 in the drawn insertion position.
  • the sliding block 7 which, as will be explained in more detail later, serves as a residual and force transmission member, has a groove 14 (FIG. 2) which is delimited by a stop edge 15 (FIG. 3) which is shown in FIG. 1 shown insertion position under the action of the force of a spring 16 on the locking hook 12.
  • the groove 14 merges at the stop edge 15 into a wedge-shaped projection with an inclined surface 17.
  • the sliding block On the opposite side, the sliding block has a further inclined surface 18, the function of which will also be explained in more detail later.
  • the spring 16 is designed as a leg spring, one leg being attached to a pin 19 of the sliding block 7 and the other leg being attached to a fixed pin 20 assigned to the carrier 2.
  • the pins 19 and 20 form an angle ( ⁇ ) of approximately 10 ° with respect to the vertical.
  • a certain spring force (F S ) in the direction of force shown in FIG. 1 results in a relatively small force component (F H ) in the horizontal plane, but a relatively large force component (F v ) in the vertical direction.
  • F H relatively small force component
  • F v relatively large force component
  • a trigger lever 21 is also pivotally mounted on the carrier 2.
  • the release lever 21 is connected to the sliding block 7 via a drive rod 22, in that one end of the drive rod 22 is suspended in a groove of the release lever 21 by means of pins 23, while the other end is movable along the slide block 7 up to a stop 25 by means of pins 24 is led.
  • the locking hook With further insertion of the storage tray into the recess 3, the locking hook is positively guided along the wedge surface 17, whereby the clamping lever 6 is tilted until finally the free end of the locking hook 12 is pressed against a surface 27 of a correspondingly shaped recessed grip of the storage tray.
  • the spring 16 changes its direction of force, whereby it acts with an increasingly larger force component in the horizontal direction and thereby presses the clamping lever with increasing force against the surface 27 of the storage tray.
  • the storage tray In the locked position, the storage tray is firmly fixed in the recess 3 by clamping action (Fig. 2).
  • the latching hook 12 rests on the storage tray with maximum clamping force.
  • the stop 25 comes into the position shown in FIG. 2, in which it is located directly in front of the pin 24 of one end of the driving rod 22.
  • the release lever 21 is pivoted downward (FIG. 3).
  • the sliding block 7 is moved against the force of the spring 16 in the removal direction, ie to the left in the illustration, via the driving rod 22.
  • the surface 18 of the sliding block 7 finally comes to rest on the right leg of the clamping lever 6 and pivots it back into the starting position.
  • the arrangement of the pivot lever 21 offers the advantage of unlocking the storage tray with one hand in such a way that neither the storage tray nor the carrier need be held. It is thus possible to unlock the clamping connection with one hand without shifting the position of the carrier, which has proven to be particularly advantageous in the case of movable support arm systems.
  • the entire clamping mechanism is advantageously attached as an assembly on the base plate 8, which in turn is easily releasably held on the carrier. After the driver rod 22 is only hooked onto the release lever 21, the entire mechanism can be easily detached from the carrier if necessary.
  • leg spring described instead of the leg spring described, other suitable sources of force can also be provided. Likewise, it is not absolutely necessary for the intended power source to change its direction of force in the insertion phase. However, the proposed solution has the advantage that the edge 15 and the surface cooperating with it on the clamping lever 6 are subject to relatively little wear due to the relatively small force.

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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)
  • Clamps And Clips (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Halterung und Wiederfreigabe eines Ablagetabletts an bzw. von einem Träger, der eine Stellfläche aufweist zur Auflage von zumindest einem Teil des Ablagetabletts und der benachbart der Stellfläche eine Ausnehmung enthält, in die ein Randteil des Ablagetabletts einführbar ist und der weiterhin eine Klemmmechanik enthält, welche das Ablagetablett durch eine Klemmverbindung im Bereich des Randteils festhält und diese Klemmverbindung bei Betätigung einer Entriegelungseinrichtung wieder löst.The invention relates to a device for holding and re-releasing a storage tray on or from a carrier, which has a footprint for supporting at least a part of the storage tray and which contains a recess adjacent to the footprint into which an edge part of the storage tray can be inserted and which also contains a clamping mechanism, which holds the tray by a clamping connection in the region of the edge part and releases this clamping connection when an unlocking device is actuated.

Bei einer bekannten solchen Vorrichtung (DE-34 13 871), welche im besonderen dazu ausgebildet ist, ein Instrumentenablagetablett zu haltern, welches einen nach unten gezogenen Randendteil aufweist, enthält der Träger ein verschiebbar gehaltertes Tragteil, welches eine horizontale Auflagefläche für das Tablett und benachbart der Auflagefläche eine Vertiefung enthält, in die der Randendteil des Ablagetabletts formschlüssig eingreift. Der Träger ist ferner mit einem in einem der Randhöhe des Ablagetabletts entsprechenden Abstand von der Vertiefung angeordneten Vorsprung versehen, der bei aufgelegtem Ablagetablett die obere Fläche des Randes wenigstens teilweise übergreift.In a known device of this type (DE-34 13 871), which is designed in particular to hold an instrument storage tray which has a downwardly drawn edge end part, the carrier contains a displaceably held support part which has a horizontal support surface for the tray and adjacent the support surface contains a recess into which the edge end part of the storage tray engages in a form-fitting manner. The carrier is also provided with a projection which is arranged at a distance from the depression corresponding to the edge height of the storage tray and which at least partially overlaps the upper surface of the edge when the storage tray is placed on it.

Zur Halterung des Ablagetabletts wird dieses mit seinem unteren Randendteil in die Vertiefung des verschiebbar gehalterten Tragteils eingesetzt. Danach werden Ablagetablett und Tragteil in Richtung des Vorsprunges verschoben und anschließend nach unten gedrückt, wodurch ein Zapfen des Tragteils an einem Anschlag einer weiteren Vertiefung im Tragteil zur Anlage kommt. Das Entnehmen geschieht in umgekehrter Reihenfolge, d.h. Tragteil und Ablagetablett müssen zunächst leicht angehoben die Eingriffsverbindung sodann gelöst werden.To hold the tray, the lower edge end part of the tray is inserted into the recess of the slidably supported support part. Then the tray and the support part are moved in the direction of the projection and then pressed down, causing a pin of the support part at a stop another recess in the supporting part comes to rest. The removal takes place in reverse order, ie the supporting part and the tray have to be lifted slightly first, then the engagement connection must then be released.

Obgleich sich die bekannte Vorrichtung gut bewährt hat, ist bei der dort vorgesehenen Mechanik nicht auszuschließen, daß sich die Klemmverbindung bei unbeabsichtigtem übermäßigem Druck von unten gegen das Ablagetablett lösen kann.Although the known device has proven itself well, it cannot be ruled out in the mechanics provided there that the clamping connection can come loose against the storage tray in the event of unintentional excessive pressure from below.

Der im Anspruch 1 angegebenen Erfindung liegt die Aufgabe zugrunde, demgegenüber eine Verbesserung zu erzielen und eine Vorrichtung der eingangs genannten Art anzugeben, bei der sichergestellt ist, daß das Ablagetablett sich nicht ungewollt aus der Halterung lösen kann bzw. versehentlich gelöst werden kann.The invention specified in claim 1 is based on the object to achieve an improvement and to provide a device of the type mentioned, in which it is ensured that the tray cannot unintentionally detach from the holder or can be accidentally detached.

Vorteile der Erfindung sind, daß das Ablagetablett in Einhandbedienung selbsttätig sicher gerastet werden kann, in der Raststellung auch bei versehentlichem Entgegenstoßen sicher verbleibt und daß die gesamte Rastmechanik vergleichsweise einfach in einem Träger eingebaut werden kann, ohne daß auf die Konstruktion des Trägers besonders geachtet zu werden braucht.Advantages of the invention are that the storage tray can be securely latched automatically in one-hand operation, remains securely in the latching position even in the event of accidental collision, and that the entire latching mechanism can be installed comparatively easily in a carrier without paying particular attention to the construction of the carrier needs.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Die Figuren 1 bis 3 zeigen dabei die erfindungsgemäße Vorrichtung im Schnitt, und zwar in drei verschiedenen Phasen, wobei die Figur 1 die Vorrichtung in einer Stellung zeigt, in der das Ablagetablett in den Träger eingesetzt, jedoch noch nicht gerastet ist, und die Figuren 2 und 3 die Vorrichtung einerseits in einer Raststellung und andererseits in einer Entnahmestellung zeigen.An embodiment of the invention is explained below with reference to the drawing. 1 to 3 show the device according to the invention in section, in three different phases, FIG. 1 showing the device in a position in which the storage tray has been inserted into the carrier but has not yet clicked into place, and FIGS. 2 and FIG. 3 show the device in a latching position on the one hand and in a removal position on the other hand.

Bevor die Funktionsweise näher erläutert wird, zunächst eine Beschreibung des konstruktiven Aufbaus der Vorrichtung.Before the mode of operation is explained in more detail, first a description of the construction of the device.

Ein in der Zeichnung nur ausschnittsweise dargestelltes Instrumentenablagetablett 1 soll an einem Träger 2 lösbar gerastet werden. Hierzu ist der Träger 2 mit einer Ausnehmung 3 versehen, die in der Bauhöhe etwa der Bauhöhe des Instrumentenablagetabletts 1 entspricht. Die Ausnehmung 3 bildet bodenseitig eine nach außen etwas vorgezogene Stellfläche 4, auf der das Ablagetablett in der Einschubphase zumindest über einen Teil seiner Fläche abstellbar ist. Die Stellfläche 4 ist so bemessen, daß sie zusammen mit der deckseitigen Fläche der Ausnehmung das Ablagetablett bereits zu Beginn der Einschubphase ausreichend hält. Etwa mittig der Ausnehmung 3 ist im Träger 2 ein Betätigungsstift 5 horizontal verschiebbar gelagert. Der Betätigungsstift steht in Wirkverbindung mit einem im Träger 2 schwenkbar gelagerten Klemmhebel 6, der wiederum mit einem Gleitstein 7 zusammenwirkt. Der Gleitstein 7 ist in einer im Träger 2 montierten Bodenplatte 8 längsverschiebbar geführt, wozu seitlich entsprechende Führungsleisten 9 vorgesehen sind. Der mittels einer horizontalen Achslagerung 10 kippbar gelagerte Klemmhebel 6 enthält zwei abgewinkelte Schenkel, von denen der eine eine mit der einen Stirnseite des Betätigungsstiftes 5 zusammenwirkende Betätigungsfläche 11 und der andere einen Rasthaken 12 aufweist. Letzterer greift in der gezeichneten Einschubstellung durch eine Ausnehmung 13 des Trägers 2 hindurch.An instrument storage tray 1, which is only shown in part in the drawing, is to be detachably latched onto a carrier 2. For this purpose, the carrier 2 is provided with a recess 3, the height of which corresponds approximately to the height of the instrument tray 1. The recess 3 forms on the bottom side a slightly protruding standing surface 4, on which the storage tray can be placed over at least part of its surface during the insertion phase. The footprint 4 is dimensioned such that, together with the surface of the recess on the cover side, it already holds the storage tray sufficiently at the beginning of the insertion phase. An actuating pin 5 is mounted horizontally displaceably in the carrier 2 approximately in the middle of the recess 3. The actuating pin is operatively connected to a clamping lever 6 which is pivotally mounted in the carrier 2 and which in turn interacts with a sliding block 7. The sliding block 7 is guided in a longitudinally displaceable manner in a base plate 8 mounted in the carrier 2, for which purpose corresponding guide strips 9 are provided on the side. The clamping lever 6, which is tiltably mounted by means of a horizontal axle bearing 10, contains two angled legs, one of which has an actuating surface 11 which interacts with one end face of the actuating pin 5 and the other has a latching hook 12. The latter reaches through a recess 13 of the carrier 2 in the drawn insertion position.

Der Gleitstein 7, der, wie später noch näher erläutert wird, als Rest- und Kraftübertragungsglied dient, weist eine Nut 14 auf (Fig. 2), die durch eine Anschlagkante 15 (Fig. 3) begrenzt ist, welche in der in Figur 1 gezeigten Einschubstellung unter Wirkung der Kraft einer Feder 16 am Rasthaken 12 anliegt. Die Nut 14 geht an der Anschlagkante 15 über in einen keilförmigen Ansatz mit einer schrägen Fläche 17. An der gegenüberliegenden Seite weist der Gleitstein eine weitere schräge Fläche 18 auf, deren Funktion ebenfalls später noch näher erläutert wird.The sliding block 7, which, as will be explained in more detail later, serves as a residual and force transmission member, has a groove 14 (FIG. 2) which is delimited by a stop edge 15 (FIG. 3) which is shown in FIG. 1 shown insertion position under the action of the force of a spring 16 on the locking hook 12. The groove 14 merges at the stop edge 15 into a wedge-shaped projection with an inclined surface 17. On the opposite side, the sliding block has a further inclined surface 18, the function of which will also be explained in more detail later.

Die Feder 16 ist als Schenkelfeder ausgebildet, wobei der eine Schenkel an einem Zapfen 19 des Gleitsteins 7 und der andere an einem ortsfesten, dem Träger 2 zugeordneten Zapfen 20 eingehängt ist. Die Zapfen 19 und 20 bilden in der dargestellten Einschubstellung gegenüber der Vertikalen einen Winkel (α) von etwa 10°. Infolge dieser Anordnung ergibt sich bei einer bestimmten Federkraft (FS) in der in Figur 1 gezeigten Kraftrichtung eine relativ kleine Kraftkomponente (FH) in horizontaler Ebene, dagegen eine relativ große Kraftkomponente (Fv) in vertikaler Richtung. Mit der relativ kleinen Kraft FH, die die Feder auf den Gleitstein 7 in horizontaler Richtung ausübt, wird der Rasthaken 12 in der gezeichneten Einschubstellung mit relativ geringer Reibkraft gehalten. Der Rastmechanismus ist in dieser Stellung für eine das Einführen und Wiederentnehmen des Ablagetabletts ermöglichenden Freigabestellung vorbereitend gespannt.The spring 16 is designed as a leg spring, one leg being attached to a pin 19 of the sliding block 7 and the other leg being attached to a fixed pin 20 assigned to the carrier 2. In the illustrated insertion position, the pins 19 and 20 form an angle (α) of approximately 10 ° with respect to the vertical. As a result of this arrangement, a certain spring force (F S ) in the direction of force shown in FIG. 1 results in a relatively small force component (F H ) in the horizontal plane, but a relatively large force component (F v ) in the vertical direction. With the relatively small force F H that the spring exerts on the sliding block 7 in the horizontal direction, the latching hook 12 is held in the drawn insertion position with a relatively low frictional force. In this position, the latching mechanism is preliminarily tensioned for a release position that enables the insertion and removal of the storage tray.

Am Träger 2 ist ferner ein Auslösehebel 21 schwenkbar gelagert. Der Auslösehebel 21 ist über eine Mitnehmerstange 22 mit dem Gleitstein 7 verbunden, indem das eine Ende der Mitnehmerstange 22 mittels Zapfen 23 in einer Nut des Auslösehebels 21 eingehängt ist, während das andere Ende mittels Zapfen 24 längs des Gleitsteines 7 bis zu einem Anschlag 25 beweglich geführt ist.A trigger lever 21 is also pivotally mounted on the carrier 2. The release lever 21 is connected to the sliding block 7 via a drive rod 22, in that one end of the drive rod 22 is suspended in a groove of the release lever 21 by means of pins 23, while the other end is movable along the slide block 7 up to a stop 25 by means of pins 24 is led.

Zur Funktionsweise:How it works:

Beim Einschieben des Ablagetabletts 1 in die Ausnehmung 3 des Trägers 2 kommt die eine Stirnseite des Tabletts an der einen Stirnseite des Betätigungsstiftes 5 zur Anlage. Der Betätigungsstift 5 bewirkt bei weiterem Einschieben des Ablagetabletts eine Kippung des Klemmhebels um die Achslagerung 10. Dabei wird die Haltekraft des Klemmhebels, die durch Anliegen der Kante am Rasthaken 12 erzeugt wird, aufgehoben. Der Rasthaken kommt sodann mit einer Fläche 26 auf der Keilfläche 17 zu liegen. Wegen der relativ geringen horizontalen Haltekraft FH, mit der der Gleitstein 7 gegen den Klemmhebel 12 drückt, ist das Entriegeln des Klemmhebels 6 mit geringem Kraftaufwand möglich.When the tray 1 is inserted into the recess 3 of the carrier 2, one end of the tray comes to rest on one end of the actuating pin 5. When the storage tray is pushed in further, the actuating pin 5 causes the clamping lever to tilt about the axle bearing 10. The holding force of the clamping lever, which is generated by the edge resting on the latching hook 12, is canceled. The latching hook then comes to rest with a surface 26 on the wedge surface 17. Because of the relatively low horizontal holding force F H with which the sliding block 7 presses against the clamping lever 12, the clamping lever 6 can be unlocked with little effort.

Mit weiterem Einschieben des Ablagetabletts in die Ausnehmung 3 wird der Rasthaken entlang der Keilfläche 17 zwangsgeführt, wodurch der Klemmhebel 6 so weit gekippt wird, bis schließlich das freie Ende des Rasthakens 12 gegen eine Fläche 27 einer entsprechend geformten Griffmulde des Ablagetabletts gedrückt wird. Bei diesem Vorgang ändert dabei die Feder 16 ihre Kraftrichtung, wodurch sie mit einer zunehmend größer werdenden Kraftkomponente in waagerechter Richtung wirkt und dabei den Klemmhebel mit zunehmend größer werdender Kraft gegen die Fläche 27 des Ablagetabletts drückt. In der Raststellung ist das Ablagetablett in der Ausnehmung 3 durch Klemmwirkung fest fixiert (Fig. 2). Der Rasthaken 12 liegt mit maximaler Klemmkraft am Ablagetablett an. Infolge der Längsbewegung, die der Gleitstein 7 in bezug auf die Bodenplatte 8 ausgeführt hat, kommt der Anschlag 25 in die in Figur 2 gezeigte Position, in der er sich unmittelbar vor dem Zapfen 24 des einen Endes der Mitnehmerstange 22 befindet.With further insertion of the storage tray into the recess 3, the locking hook is positively guided along the wedge surface 17, whereby the clamping lever 6 is tilted until finally the free end of the locking hook 12 is pressed against a surface 27 of a correspondingly shaped recessed grip of the storage tray. During this process, the spring 16 changes its direction of force, whereby it acts with an increasingly larger force component in the horizontal direction and thereby presses the clamping lever with increasing force against the surface 27 of the storage tray. In the locked position, the storage tray is firmly fixed in the recess 3 by clamping action (Fig. 2). The latching hook 12 rests on the storage tray with maximum clamping force. As a result of the longitudinal movement which the sliding block 7 has carried out with respect to the base plate 8, the stop 25 comes into the position shown in FIG. 2, in which it is located directly in front of the pin 24 of one end of the driving rod 22.

Zur Entnahme des Ablagetabletts wird der Auslösehebel 21 nach unten geschwenkt (Fig. 3). Dabei wird über die Mitnehmerstange 22 der Gleitstein 7 entgegen der Kraft der Feder 16 in Entnahmerichtung, also in der Darstellung nach links, bewegt. Bei diesem Vorgang kommt schließlich die Fläche 18 des Gleitsteins 7 am rechten Schenkel des Klemmhebels 6 zur Anlage und schwenkt diesen zurück in die Ausgangsposition.To remove the storage tray, the release lever 21 is pivoted downward (FIG. 3). Here, the sliding block 7 is moved against the force of the spring 16 in the removal direction, ie to the left in the illustration, via the driving rod 22. During this process, the surface 18 of the sliding block 7 finally comes to rest on the right leg of the clamping lever 6 and pivots it back into the starting position.

Nach Zurückklappen des Auslösehebels 21 in die waagerechte Ausgangsstellung, welches vorteilhafterweise selbsttätig mittels einer gesonderten, hier nicht dargestellten Rückstellfeder erfolgen kann, wird der Gleitstein 7 wieder so weit nach rechts gezogen, bis er mit der Kante 15 am Rasthaken 11 mit Vorspannung anliegt. Die Rastmechanik ist sodann wieder vorbereitend gespannt.After the trigger lever 21 has been folded back into the horizontal starting position, which can advantageously be carried out automatically by means of a separate return spring (not shown here), the sliding block 7 is again pulled to the right until it lies with the edge 15 on the latching hook 11 with pretension. The locking mechanism is then preliminarily tensioned again.

Die Anordnung des Schwenkhebels 21 bietet den Vorteil, das Ablagetablett mit einer Hand derart zu entriegeln, daß weder das Ablagetablett noch der Träger festgehalten zu werden braucht. Es ist somit eine einhändige Entriegelung der Klemmverbindung ohne Positionsverschiebung des Trägers möglich, was sich als besonders vorteilhaft bei beweglichen Tragarmsystemen erweist.The arrangement of the pivot lever 21 offers the advantage of unlocking the storage tray with one hand in such a way that neither the storage tray nor the carrier need be held. It is thus possible to unlock the clamping connection with one hand without shifting the position of the carrier, which has proven to be particularly advantageous in the case of movable support arm systems.

Die gesamte Klemmechanik ist vorteilhafterweise als Baugruppe auf der Bodenplatte 8 befestigt, die ihrerseits wieder leicht lösbar am Träger gehaltert ist. Nachdem die Mitnehmerstange 22 am Auslösehebel 21 nur eingehängt ist, kann die gesamte Mechanik bei Bedarf leicht vom Träger gelöst werden.The entire clamping mechanism is advantageously attached as an assembly on the base plate 8, which in turn is easily releasably held on the carrier. After the driver rod 22 is only hooked onto the release lever 21, the entire mechanism can be easily detached from the carrier if necessary.

Abschließend sei darauf hingewiesen, daß anstelle der beschriebenen Schenkelfeder auch andere geeignete Kraftquellen vorgesehen werden können. Ebenso ist es nicht zwingend notwendig, daß die vorgesehene Kraftquelle ihre Kraftrichtung in der Einschubphase ändert. Die vorgesehene Lösung hat jedoch den Vorteil, daß die Kante 15 und die mit ihr zusammenwirkende Fläche am Klemmhebel 6 durch die relativ kleine Krafteinwirkung einem relativ geringen Verschleiß unterworfen sind.In conclusion, it should be pointed out that instead of the leg spring described, other suitable sources of force can also be provided. Likewise, it is not absolutely necessary for the intended power source to change its direction of force in the insertion phase. However, the proposed solution has the advantage that the edge 15 and the surface cooperating with it on the clamping lever 6 are subject to relatively little wear due to the relatively small force.

Claims (11)

  1. Device for mounting a stowage tray (1) on, and releasing it from, a holder (2) which has a setting-down surface (4) for the depositing of at least part of the stowage tray and contains, adjacent to the setting-down surface, a cut-out portion (3) into which an edge portion of the stowage tray can be inserted, the said holder furthermore having a clamping mechanism containing a means (7) which holds a clamping means (6), under the influence of a power source (16) with pretensioning (FH), in a release position which permits the insertion and removal again of the stowage tray, which means (7) automatically cancels the said release position when the stowage tray is inserted further, and, in the pushed-in condition, causes the clamping means (6) to hold the stowage tray, under the influence of the power source (16), in a clamping position, and the said holder further having a triggering means (21) which conducts the clamping means (6) back into the release position again.
  2. Device according to Claim 1, wherein the clamping mechanism has a clamping means (6) which is mounted for pivoting movement, can be moved out of the release position and into the clamping position and, in the latter position at the underside of the edge portion of the stowage tray (1), holds the latter fast against a wall of the cut-out portion (3) in a pressing and clamping manner, wherein the clamping mechanism further contains an actuating means (5) which is disposed inside the cut-out portion (3) in the holder (2) and can be moved in the direction of removal and oppositely thereto and which is actuated by the stowage tray, on the insertion of the latter into the cut-out portion (3), and pivots the clamping means (6) about a spindle bearing (10) for the purpose of clamping the stowage tray, wherein moreover a detent and power transmitting means (7), which is disposed so as to be moveable in the direction of removal and oppositely thereto and acts in conjunction with the clamping means (6), is present, which holds the clamping means (6) fast in the release position and, in the clamping position, presses it against the stowage tray (1) with the aid of the power source (16), and wherein, furthermore, a triggering means (21), which can be displaced out of a first position and into a second position, is present, which moves in the direction of removal when the detent and power transmitting means (7) is displaced, the clamping means (6) being conducted back out of the clamping position and into the release position during this process.
  3. Device according to Claim 2, wherein the conducting back of the clamping means (6) into the release position occurs automatically through guidance by constraint between the detent and power transmitting means (7) on the one hand and the clamping means (6) on the other, under the influence of the power source (16).
  4. Device according to Claim 1, wherein the detent and power transmitting means is a sliding block (7) which is guided in the holder (2) in a longitudinally displaceable manner and has a groove (14) into which a detent hook (12) on the clamping means (6) can engage, which sliding block (7) has, following the detent groove, a wedge-shaped extension with an inclined surface (17), on which extension the detent hook rests by means of a surface (25), the power source (16) being so constructed and disposed that, when the sliding block moves into the clamping position, an increasingly greater force is exerted upon the clamping means (6).
  5. Device according to Claim 4, wherein there is provided, as the clamping means, a clamping lever (6) which is mounted in the holder (2) for pivoting movement about a spindle bearing (10) and which has two angled legs, one of which works in conjunction with the actuating means (5) while the other contains the detent hook (12) which engages into the groove (14) in the sliding block (7).
  6. Device according to Claim 5, wherein there is provided, as the actuating means, a pin (5) which is mounted in the holder (2) and works, with one of its ends, in conjunction with an actuating surface (11) on the clamping lever (6) and, with its other end, in conjunction with the edge portion of the stowage tray (1), which edge portion can be inserted into the cut-out portion (3).
  7. Device according to Claim 1, wherein there is provided, as the triggering means for displacing the detent means, a pivoting lever (21) which can be actuated by hand and is connected, by means of an entraining device (22), to the detent and power transmitting means (7) in such a way that, when the pivoting lever is actuated, the clamping lever (6) is displaced into the release position and the actuating means (5) is displaced in the direction of removal.
  8. Device according to Claim 1, wherein a power source (16) which is variable in the direction of force is present.
  9. Device according to Claim 8, wherein the power source (16) generates a component of force (FH) which is directed oppositely to the direction of removal and which is smaller in the release position than in the clamping position.
  10. Device according to Claim 9, wherein there is provided, as the power source, a leg spring (16) which works against the direction of removal and the ends of which are supported, on the one hand, against the holder (2) and, on the other hand, against the detent and transmitting means (7).
  11. Device according to one of Claims 1 to 10, wherein the clamping mechanism (6, 7, 16) is fitted, as an assembly, on a bottom plate (8) which, in turn, is detachably mounted in the holder (2).
EP19910100249 1991-01-09 1991-01-09 Device for holding and releasing a stowage tray, especially a stowage tray for dental instruments Expired - Lifetime EP0494328B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59105054T DE59105054D1 (en) 1991-01-09 1991-01-09 Device for holding and releasing a tray, in particular a dental instrument tray.
DK91100249T DK0494328T3 (en) 1991-01-09 1991-01-09 Apparatus for holding and releasing a disc tray, especially a disc tray for dental instruments
EP19910100249 EP0494328B1 (en) 1991-01-09 1991-01-09 Device for holding and releasing a stowage tray, especially a stowage tray for dental instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910100249 EP0494328B1 (en) 1991-01-09 1991-01-09 Device for holding and releasing a stowage tray, especially a stowage tray for dental instruments

Publications (2)

Publication Number Publication Date
EP0494328A1 EP0494328A1 (en) 1992-07-15
EP0494328B1 true EP0494328B1 (en) 1995-03-29

Family

ID=8206288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910100249 Expired - Lifetime EP0494328B1 (en) 1991-01-09 1991-01-09 Device for holding and releasing a stowage tray, especially a stowage tray for dental instruments

Country Status (3)

Country Link
EP (1) EP0494328B1 (en)
DE (1) DE59105054D1 (en)
DK (1) DK0494328T3 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1953694A1 (en) * 1969-10-24 1971-04-29 Kaltenbach & Voigt Bearing for holding a dental instrument tray
DE3413871A1 (en) * 1984-04-12 1985-10-17 Siemens AG, 1000 Berlin und 8000 München STORAGE DEVICE FOR DENTAL WORKING UTENSILS

Also Published As

Publication number Publication date
DE59105054D1 (en) 1995-05-04
EP0494328A1 (en) 1992-07-15
DK0494328T3 (en) 1995-08-07

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