EP0610726B1 - Holding device - Google Patents

Holding device Download PDF

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Publication number
EP0610726B1
EP0610726B1 EP94101176A EP94101176A EP0610726B1 EP 0610726 B1 EP0610726 B1 EP 0610726B1 EP 94101176 A EP94101176 A EP 94101176A EP 94101176 A EP94101176 A EP 94101176A EP 0610726 B1 EP0610726 B1 EP 0610726B1
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EP
European Patent Office
Prior art keywords
base plate
holding device
accordance
stop
tongues
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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EP94101176A
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German (de)
French (fr)
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EP0610726A1 (en
Inventor
Hans Schwartz
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/10—Devices to locate articles in containers
    • B65D25/108—Devices, e.g. plates, presenting apertures through which the articles project
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00—Supporting devices; Holding devices
    • B01L9/06—Test-tube stands; Test-tube holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
    • B25H3/04—Racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/305—Bottle-crates

Definitions

  • the invention relates to a device for holding rod-shaped Workpieces, in particular for holding cylindrical vessels such.
  • B. in the form of Test tubes consisting of one arranged at a distance from a floor Base plate which has clamping means for receiving the workpiece to be held, with at least two in the plane of the base plate pivotable resilient trains are provided, each by one in the Base plate incorporated opening are formed and in pairs on the act clamped workpiece.
  • DE-A1-36 41 411 is a holder for an insulating bottle and one on it applicable mug known.
  • the clamping devices designed as clamps consist in this device of an elastic arm through which the Insulated flask or the mug covers an area of about 120 ° and against to be pressed a rigid arm.
  • the elastic arms as well as the rigid arms protrude on the underside from a yoke part and a top wall composite holder and thus extend in the direction of objects to be clamped.
  • the object of the invention is therefore to provide a device for holding rod-shaped To create workpieces of the type mentioned that are not only extremely is simple in its constructive design and therefore economical Way can be made, but also by the reliable bracket different workpieces is guaranteed, with a high constant Tension even over a longer period. Furthermore, one workpiece each locked at different heights according to the ground clearance of the base plate can also be positioned exactly in the base plate, so that the holding device is mechanically e.g. for filling vessels or in Laboratory machines can be used.
  • the holding device should still be an injection molded part, without the need for additional assembly work, where Manufacturing tolerances can be accepted, and in many ways be easy to use.
  • the resilient tongues with three or more integrally formed on their inner lateral surfaces and projecting inwards over them to provide radially directed system cams, one of the system cams in Area of the web connecting the resilient tongues to the base plate be arranged and each of the resilient tongues in the end region a system cam should have.
  • a medium intended for cleaning can thus between the resilient tongues and the base plate.
  • the resilient tongues are in with Axial direction of the workpiece to be held preferably extending on the Bottom of the base plate molded fittings, the Prestressed deposits and / or conditions in and / or on the end pieces should be arranged.
  • the resilient tongues further with three or more over the surface of the Base plate protruding support cams that are equipped with the system cams, preferably aligned with them in the radial direction, to the resilient tongues or should be formed on these and the web.
  • the construction effort is extremely low since in a base plate only corresponding openings are to be worked in a recess for receiving a workpiece to be clamped and the to create this all-encompassing tongue of tongue.
  • the device can are therefore economically manufactured as an injection molded part. And there workpieces despite low material thickness of the base plate are to be firmly clamped in Transport rattling noises avoided, the workpieces can also vary Area of application clamped in the device at different altitudes and may also be tilted with this for emptying. Furthermore is from considerable advantage that especially with workpieces to be clamped occurring manufacturing tolerances automatically by the resilient tongues be balanced.
  • the proposed device is therefore primarily as in Laboratory machines and stands that can be used for photometric measurements Test tubes can be used in an advantageous manner, also by this Laboratory work greatly facilitated.
  • Test tube stand designed device is used for Picking up and holding rod-shaped workpieces, for example from test tubes 10, and consists of a base plate provided for receiving the test tubes 10 11 and two on this on two opposite one another Longitudinally formed wall parts 12 and these protruding foot parts that can be supported on a surface 13.
  • base plate 11 In the base plate 11 there are recesses 14 and clamping means 21 are provided, which in the Recesses 14 test tubes to be used in each case 10 act.
  • the clamping means 21, 21 'and 21'' are created by openings 22 incorporated into the base plate 11, in which approximately semicircular resilient tongues 24 and 25 are formed.
  • the resilient tongues 24 and 25 are firmly connected to the base plate 11 via a web 23.
  • the clamped test tube 10 is thus 24 and 25 included in each of the resilient tongues in a range of more than 90 o, so that it is securely locked in the recess fourteenth
  • the resilience of the resilient tongues 24 '', 25 '' increased so that the base plate 11 is also made of one material can be produced with only a low elasticity has, however, test tubes 10 are safe in this locked.
  • clamping means 31 protrude into an opening 32 of the base plate 11
  • four resilient webs 33, 34, 35 and 36 into it, each paired and diametrically opposed to each other are arranged opposite one another.
  • the resilient webs 33, 34, 35 and 36 are convexly curved formed so that the test tube 10 centrally between this is clamped.
  • the clamping means 21, 21 '' 'and 31' the essentially the configurations according to the figures 2 and 7 correspond, the resilient tongues 24, 25 or 24 '' ', 25' '' or 33 ', 34', 35 'and 36' at a clamped test tube to be inserted from above 10 on the inner surface of the opening 22 or 32 of the Base plate 11 supported.
  • This way, one is special ensures tight clamping of a test tube 10, since the resilient webs 24, 25 and 24 '' ', 25 '' 'or 33', 34 ', 35' and 36 'locked in position are and do not evade even with higher loads can.
  • the distance is according to FIG between the outer surfaces of the resilient webs 24 and 25 and the inner surface of the opening 22 so small dimensioned that by inserting a test tube 10, the resilient webs 24 and 25 at least one Place part of the base plate 10.
  • the resilient webs 24 '' 'and 25' '' to the same purpose in the end areas protruding outwards Cams 26 'and 27' on one in the recess 14 inserted and thus clamped test tube 10 on the inner surface of the incorporated in the base plate 10 Opening 22 are supported.
  • Figure 10 are the convexly curved resilient Bars 33 ', 34', 35 'and 36' dimensioned such that these with a clamped test tube 10 with its ends rest on the base plate 11.
  • 12 and 13 41 is one machined into the base plate 11 Opening 42 approximately in the form of a rectangle, so that the protruding into the opening 42 in pairs resilient tongues 43 and 44 through support surfaces 45 and 46 created opposite stop assigned.
  • the trained in different ways test tubes inserted into the recess 14 10 ', 10' 'and 10' '' are thus by the resilient Tongues 43 and 44 pressed against the support surfaces 45 and 46, so that the test tubes 10 ', 10' 'or 10' '' are positioned exactly.
  • FIGS. 14 and 15 are the resilient tongues 24 and 25 on the underside the base plate 11 with itself in the axial direction to be held Workpiece 10 extending end pieces 51 equipped and those in the form of a leaf spring tensionable pads 52 are on the extensions 51st placed so that the workpieces 10 when inserted led into the device 1 over a large area and are excited.
  • tabs 53 are the pads 52 additional secured.
  • system cams 63, 64 and 65 are formed on the resilient tongues 24 and 25, and the resilient tongues 24 and 25 have support cams 66, 67 and 68 which cover the surface of the base plate 11 tower over.
  • the system cams 63, 64 and 65 and the support cams 66, 67 and 68 are provided together on the resilient tongues 24 and 25 in their end regions or in the region of the web 23 connecting them to the base plate 11, so that a three-point system or A set of a set test tube 10 IV is given.
  • the resilient tongues 24 and 25 measured in length so that this in the starting position with their free end faces 69 and 70 immediately to each other or, according to Figure 19, to one between them arranged stop 71, which by a on the base plate 11 molded projection 72 is formed, lie.
  • This prevents the test tube rack from being cleaned 1 in a hot atmosphere can deform resilient tongues 24 and 25 in such a way that bending up when inserting a test tube a force that is sometimes too high would require resilience rather, the resilient tongues 24 and 25 remain there they cannot deform inwards, constantly.
  • a base plate 11 ' provided with clamping means in the form of resilient webs 24 and 25 can also be used in a container 2 provided for holding bottles 10 V in order to lock them.
  • the base plate 11 ' is mounted at a distance from the bottom 4 of the container 2 on its wall 3, so that the bottles 10 V inserted into the base plate 11' from above are held immovably in the container 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Jigs For Machine Tools (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Gripping On Spindles (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Clamps And Clips (AREA)

Abstract

In a device (1) for holding bar-shaped workpieces which consists of a base plate (11) provided with clamping means (21), two flexible tongues (24, 25) pivotable in the plane of the base plate (11) are provided as clamping means (21). The tongues (24, 25) are in each case formed by an aperture (22) made in the base plate (11) and act in pairs on the clamped workpiece. Not only is this holding device (1) of exceptionally simple design and thus economical to produce, but reliable holding of the workpieces in different vertical positions is also guaranteed. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Halterung stabförmiger Werkstücke, insbesondere zur Halterung zylindrischer Gefäße z. B. in Form von Reagenzgläsern, bestehend aus einer mit Abstand zu einem Boden angeordneten Grundplatte, die Spannmittel zur Aufnahme des zu haltenden Werkstückes aufweist, wobei als Spannmittel mindestens zwei in der Ebene der Grundplatte verschwenkbare federnde Zugen vorgesehen sind, die jeweils durch eine in die Grundplatte eingearbeitete Durchbrechung gebildet sind und paarweise auf das eingespannte Werkstück einwirken.The invention relates to a device for holding rod-shaped Workpieces, in particular for holding cylindrical vessels such. B. in the form of Test tubes consisting of one arranged at a distance from a floor Base plate which has clamping means for receiving the workpiece to be held, with at least two in the plane of the base plate pivotable resilient trains are provided, each by one in the Base plate incorporated opening are formed and in pairs on the act clamped workpiece.

Durch die DE-A1-36 41 411 ist ein Halter für eine Isolierflasche und einen auf diese aufbringbaren Becher bekannt. Die als Klemmen ausgebildeten Spannmittel bestehen bei dieser Vorrichtung jeweils aus einem elastischen Arm, durch die die Isolierflasche bzw. der Becher auf einem Bereich von etwa 120° umfaßt und gegen einen starren Arm gepreßt werden. Die elastischen Arme sowie die starren Arme überragen hierbei auf der Unterseite den aus einem Jochteil und einer Deckwand zusammengesetzten Halter und erstrecken sich somit in Richtung der einzuspannenden Gegenstände. DE-A1-36 41 411 is a holder for an insulating bottle and one on it applicable mug known. The clamping devices designed as clamps consist in this device of an elastic arm through which the Insulated flask or the mug covers an area of about 120 ° and against to be pressed a rigid arm. The elastic arms as well as the rigid arms protrude on the underside from a yoke part and a top wall composite holder and thus extend in the direction of objects to be clamped.

Durch die Anlage der federnden und starren Arme auf einem größeren Bereich in Achsrichtung der Isolierflasche und des Bechers sind diese zwar sicher in dem Halter arretiert, aufgrund der Ausgestaltung ist dieser aber nur für diese bzw. zwei einander zugeordnete Gegenstände verwendbar. Vor allem aber ist von Nachteil, daß der Aufwand zur Herstellung des Halters außerordentlich groß ist, da die abstehenden Teile der Deckplatte sowie der federnden und starren Arme komplizierte Werkzeuge erfordern. Auch baut der bekannte Halter verhältnismäßig groß, ein vielseitiger Einsatz ist demnach nicht gegeben.By planting the resilient and rigid arms over a larger area The axial direction of the vacuum flask and the cup are safe in the Holder locked, but due to the design, this is only for this or two objects assigned to one another can be used. But above all, it is a disadvantage that the effort to manufacture the holder is extremely large, because the protruding parts of the cover plate and the springy and rigid arms require complicated tools. The known holder builds relatively large, so there is no versatile use.

Durch die US 5 080 232 A ist des weiteren eine Haltevorrichtung der eingangs genannten Art bekannt. Die in der Ebene der Grundplatte verschwenkbaren federnden Zungen sind hierbei durch zwei einander gegenüberliegend angeordnete geradlinig oder gekrümmt gestaltete Stege gebildet, die durch Einstecken eines zylindrischen Gefäßes seitlich verschwenkt werden. Da die federnden Zungen diametral einander gegenüberliegend auf den zu haltenden Gegenstand einwirken, ist dieser oftmals nicht ausreichend arretiert, vor allem aber ist bei dieser Ausgestaltung von Nachteil, daß eine hohe Spannkraft nicht aufzubringen und daß bereits nach kurzer Zeit, bedingt durch Materialermüdungen, eine ausreichende Einspannung nicht mehr gegeben ist.Through the US 5 080 232 A is also a holding device at the beginning known type known. The pivotable in the plane of the base plate resilient tongues are arranged here by two opposite one another straight or curved webs formed by inserting a cylindrical vessel can be pivoted sideways. Because the resilient tongues act diametrically opposite each other on the object to be held, is often not adequately locked, but above all is with this Design disadvantageous that a high clamping force can not be applied and that sufficient after a short time due to material fatigue There is no more tension.

Aufgabe der Erfindung ist es daher, eine Vorrichtung zur Halterung stabförmiger Werkstücke der eingangs genannten Gattung zu schaffen, die nicht nur äußerst einfach in ihrer konstruktiven Ausgestaltung ist und demnach auf wirtschaftliche Weise gefertigt werden kann, sondern durch die auch eine zuverlässige Halterung unterschiedlicher Werkstücke gewährleistet ist, und zwar bei hoher gleichbleibender Spannkraft auch über einen längeren Zeitraum. Des weiteren soll ein Werkstück je nach Bodenabstand der Grundplatte in unterschiedlichen Höhenlagen arretiert werden können, auch soll dieses exakt in der Grundplatte zu positionieren sein, so daß die Haltevorrichtung maschinell z.B. zum Befüllen von Gefäßen oder in Laborautomaten einsetzbar ist. Die Haltevorrichtung soll dennoch als Spritzgußteil, ohne daß zusätzliche Montagearbeiten notwendig sind, herzustellen, wobei Fertigungstoleranzen in Kauf genommen werden können, und in vielseitiger Weise bei einfacher Handhabung einzusetzen sein.The object of the invention is therefore to provide a device for holding rod-shaped To create workpieces of the type mentioned that are not only extremely is simple in its constructive design and therefore economical Way can be made, but also by the reliable bracket different workpieces is guaranteed, with a high constant Tension even over a longer period. Furthermore, one workpiece each locked at different heights according to the ground clearance of the base plate can also be positioned exactly in the base plate, so that the holding device is mechanically e.g. for filling vessels or in Laboratory machines can be used. The holding device should still be an injection molded part, without the need for additional assembly work, where Manufacturing tolerances can be accepted, and in many ways be easy to use.

Gemäß der Erfindung wird dies bei einer Vorrichtung zur Halterung stabförmiger Werkstücke der vorgenannten Art dadurch erreicht, daß die federnden Zungen jeweils mit einer vorgespannten Einlage oder Auflage in Form eines Federringes, einer Blattfeder oder dgl. versehen sind.According to the invention, this becomes rod-shaped in a device for holding Workpieces of the aforementioned type achieved in that the resilient tongues each with a preloaded insert or support in the form of a spring washer, a leaf spring or the like. Are provided.

Um das Reinigen der Haltevorrichtung bei in dieser eingesetzten Werkstücken zu erleichtern, ist es ferner angebracht, die federnden Zungen mit drei oder mehreren an ihren Innenmantelflächen angeformten und über diese nach innen überstehenden radial gerichteten Anlagenocken zu versehen, wobei einer der Anlagenocken im Bereich des die federnden Zungen mit der Grundplatte verbindenden Steges angeordnet sein und jede der federnden Zungen im Endbereich einen Anlagenocken aufweisen sollte. Ein zur Reinigung vorgesehenes Medium kann somit zwischen den federnden Zungen und der Grundplatte hindurchtreten.To clean the holding device for workpieces used in it facilitate, it is also appropriate to use the resilient tongues with three or more integrally formed on their inner lateral surfaces and projecting inwards over them to provide radially directed system cams, one of the system cams in Area of the web connecting the resilient tongues to the base plate be arranged and each of the resilient tongues in the end region a system cam should have. A medium intended for cleaning can thus between the resilient tongues and the base plate.

Nach einer Weiterbildung ist vorgesehen, die federnden Zungen mit sich in Achsrichtung des zu haltenden Werkstückes erstreckenden vorzugsweise auf der Unterseite der Grundplatte angeformten Ansatzstücken auszustatten, wobei die vorgespannten Einlagen und/oder Auflagen in und/oder auf den Ansatzstücken angeordnet sein sollten.According to a further development, the resilient tongues are in with Axial direction of the workpiece to be held preferably extending on the Bottom of the base plate molded fittings, the Prestressed deposits and / or conditions in and / or on the end pieces should be arranged.

Damit abgesetzte Reagenzgläser nicht auf der Grundplatte aufliegen, sollten die federnden Zungen des weiteren mit drei oder mehreren über die Oberfläche der Grundplatte überstehenden Auflagenocken ausgestattet sein, die gemeinsam mit den Anlagenocken, vorzugsweise in radialer Richtung mit diesen fluchtend, an den federnden Zungen bzw. an diesen und dem Steg angeformt sein sollten.So that test tubes that have been deposited do not lie on the base plate, the resilient tongues further with three or more over the surface of the Base plate protruding support cams that are equipped with the system cams, preferably aligned with them in the radial direction, to the resilient tongues or should be formed on these and the web.

Um zu vermeiden, daß sich die federnden Zungen beim Reinigen in einer heißen Atmosphäre, ohne das ein Reagenzglas in der Haltevorrichtung eingespannt ist, verformen, sollten diese in ihrer Länge derart bemessen sein, daß die federnden Zungen in Ausgangslage mit ihren freien Stirnflächen unmittelbar aneinander oder an einem Anschlag anliegen. Der mit den federnden Zungen zusammenwirkende Anschlag kann in einfacher Weise durch einen von der Grundplatte radial abstehenden, dem die federnden Zungen mit dieser verbindenden Steg gegenüberliegenden Ansatz gebildet sein.To avoid that the resilient tongues get hot when cleaning Atmosphere without a test tube clamped in the holder, deform, their length should be such that the resilient Tongues in the starting position with their free end faces directly against each other or abut a stop. The one interacting with the resilient tongues Stop can be done easily by one of the base plate radially protruding, the spring tongue with this connecting web opposite approach to be formed.

Wird eine Vorrichtung zur Halterung stabförmiger Werkstücke gemäß der Erfindung mit Spannmitteln versehen, die jeweils aus mindestens zwei in der Ebene der Grundplatte verschwenkbaren und aus dieser herausgearbeiteten federnden Zungen bestehen und wobei die Zungen jeweils mit einer vorgespannten Einlage oder Auflage versehen sind, so ist sichergestellt, daß ein zwischen die federnden Zungen eingesetztes Werkstück stets in einer zufriedenstellenden Weise arretiert ist und die Spannkraft über einen langen Zeitraum erhalten bleibt. Und wird des weiteren ein Anschlag für das Werkstück vorgesehen, ist dieses lagegenau positioniert, so daß die Vorrichtung auch maschinell einzusetzen ist.Becomes a device for holding rod-shaped workpieces according to the invention provided with clamping devices, each consisting of at least two in the plane of the Base plate pivotable and made out of this resilient tongues exist and the tongues each with a preloaded insert or Pad are provided, this ensures that between the resilient tongues inserted workpiece is always locked in a satisfactory manner and the Tension is maintained over a long period of time. And will continue one Stop provided for the workpiece, this is positioned precisely, so that the device can also be used mechanically.

Der Bauaufwand, mittels dem dies zu bewerkstelligen ist, ist äußerst gering, da in eine Grundplatte lediglich entsprechende Durchbrechungen einzuarbeiten sind, um eine Ausnehmung zur Aufnahme eines einzuspannenden Werkstückes und die dieses umgreifenden ferdernden Zungen zu schaffen. Die Vorrichtung kann demnach wirtschaftlich als Spritzgußteil gefertigt werden. Und da Werkstücke trotz geringer Materialstärke der Grundplatte fest einzuspannen sind, werden beim Transport Klappergeräusche vermieden, auch können die Werkstücke je nach Einsatzbereich in unterschiedlichen Höhenlagen in der Vorrichtung eingespannt und mit dieser zum Entleeren gegebenenfalls auch gekippt werden. Des weiteren ist von erheblichem Vorteil, daß insbesondere bei einzuspannenden Werkstücken auftretende Fertigungstoleranzen durch die federnden Zungen selbsttätig ausgeglichen werden. Die vorschlagsgemäße Vorrichtung ist somit vor allem als in Laborautomaten sowie bei photometrischen Messungen einsetzbarer Ständer für Reagenzgläser in vorteilhafter Weise verwendbar, auch werden durch diese Laborarbeiten in einem erheblichen Maße erleichtert. The construction effort, by means of which this can be accomplished, is extremely low since in a base plate only corresponding openings are to be worked in a recess for receiving a workpiece to be clamped and the to create this all-encompassing tongue of tongue. The device can are therefore economically manufactured as an injection molded part. And there workpieces despite low material thickness of the base plate are to be firmly clamped in Transport rattling noises avoided, the workpieces can also vary Area of application clamped in the device at different altitudes and may also be tilted with this for emptying. Furthermore is from considerable advantage that especially with workpieces to be clamped occurring manufacturing tolerances automatically by the resilient tongues be balanced. The proposed device is therefore primarily as in Laboratory machines and stands that can be used for photometric measurements Test tubes can be used in an advantageous manner, also by this Laboratory work greatly facilitated.

In der Zeichnung sind einige teilweise allerdings nicht mehr unter die Patentansprüche fallende Ausführungsbeispiele der gemäß der Erfindung ausgebildeten Vorrichtung zur Halterung stabförmiger Werkstücke dargestellt, die nachfolgend im einzelnen erläutert sind. Hierbei zeigen:

Figur 1
die als Reagenzglasständer ausgebildete Haltevorrichtung, in einer perspektivischen Darstellung,
Figuren 2 bis 4
die bei der Vorrichtung nach Figur 1 vorgesehenen Spannmittel in unterschiedlichen Ausgestaltungen, jeweils in Draufsicht,
Figuren 5 und 6
die Spannmittelausgestaltung nach Figur 4 in unterschiedlichen Ausführungsvarianten, jeweils in einem achssenkrechten Schnitt,
Figur 7
eine weitere bei der Vorrichtung nach Figur 1 einsetzbare Spannmittelausgestaltung, in Draufsicht,
Figuren 8 bis 10
die Spannmittelausgestaltungen nach den Figuren 2 und 7 in abgewandelten Ausführungsformen,
Figuren 11 bis 13
weitere jeweils mit einem zugeordneten Anschlag versehene Spannmittelausgestaltungen, in Draufsicht,
Figur 14
eine weitere bei der Vorrichtung nach Figur 1 vorgesehene Spannmittelausgestaltung, in Draufsicht,
Figur 15
einen Schnitt nach der Linie XV - XV der Figur 14,
Figur 16
die bei der Ausgestaltung nach Figur 14 vorgesehenen Spannmittel mit an diesen angeformten Anlage- und Auflagenocken, in Draufsicht,
Figur 17
einen Schnitt nach der Linie XVII - XVII der Figur 16,
Figur 18
die Ausgestaltung nach Figur 16 mit in Ausgangslage der mit ihren freien Enden aneinander anliegenden federnden Zungen,
Figur 19
die Ausgestaltung nach Figur 16 mit einem zwischen den freien Enden der federnden Zungen angeordneten Anschlag und
Figur 20
den Einbau einer Grundplatte der Spannvorrichtung nach Figur 1 in einem Aufnahmebehältnis.
In the drawing, some exemplary embodiments of the device for holding rod-shaped workpieces designed according to the invention, some of which are no longer covered by the claims, are shown, which are explained in detail below. Here show:
Figure 1
the holding device designed as a test tube stand, in a perspective view,
Figures 2 to 4
the clamping means provided in the device according to FIG. 1 in different configurations, each in a top view,
Figures 5 and 6
4 the clamping device design according to FIG. 4 in different design variants, each in an axially perpendicular section,
Figure 7
1 a further clamping device configuration that can be used in the device according to FIG. 1, in plan view,
Figures 8 to 10
the clamping means configurations according to FIGS. 2 and 7 in modified embodiments,
Figures 11 to 13
further clamping device configurations each provided with an associated stop, in plan view,
Figure 14
1 a further clamping device configuration provided in the device according to FIG. 1, in plan view,
Figure 15
4 shows a section along the line XV-XV of FIG. 14,
Figure 16
14 the clamping means provided in the embodiment according to FIG. 14 with bearing and support cams molded onto them, in plan view,
Figure 17
16 shows a section along the line XVII - XVII of FIG. 16,
Figure 18
16 with the resilient tongues resting against one another with their free ends,
Figure 19
the embodiment of Figure 16 with a stop located between the free ends of the resilient tongues and
Figure 20
the installation of a base plate of the clamping device according to Figure 1 in a receptacle.

Die in Figur 1 dargestellte und mit 1 bezeichnete als Reagenzglasständer ausgebildete Vorrichtung dient zur Aufnahme und Halterung von stabförmigen Werkstücken, beispielsweise von Reagenzgläsern 10, und besteht aus einer zur Aufnahme der Reagenzgläser 10 vorgesehenen Grundplatte 11 sowie zwei an dieser an zwei einander gegenüberliegenden Längsseiten angeformten Wandteilen 12 und von diesen abstehenden auf einem Untergrund abstützbaren Fußteilen 13. In der Grundplatte 11 sind hierbei Ausnehmungen 14 sowie Spannmittel 21 vorgesehen, die auf die in die Ausnehmungen 14 jeweils einzusetzenden Reagenzgläser 10 einwirken.The shown in Figure 1 and designated 1 as Test tube stand designed device is used for Picking up and holding rod-shaped workpieces, for example from test tubes 10, and consists of a base plate provided for receiving the test tubes 10 11 and two on this on two opposite one another Longitudinally formed wall parts 12 and these protruding foot parts that can be supported on a surface 13. In the base plate 11 there are recesses 14 and clamping means 21 are provided, which in the Recesses 14 test tubes to be used in each case 10 act.

Die Spannmittel 21, 21' bzw. 21'' sind, wie dies insbesondere den Figuren 2 bis 4 zu entnehmen ist, durch in die Grundplatte 11 eingearbeitete Durchbrechungen 22 geschaffen, in dem etwa halbkreisförmige einander gegenüberliegend angeordnete federnde Zungen 24 und 25 gebildet sind. Über einen Steg 23 sind die federnden Zungen 24 und 25 mit der Grundplatte 11 fest verbunden. Das eingespannte Reagenzglas 10 wird somit von jeder der federnden Zungen 24 und 25 in einem Bereich von mehr als 90o umfaßt, so daß dieses sicher in der Ausnehmung 14 arretiert ist.The clamping means 21, 21 'and 21'', as can be seen in particular from FIGS. 2 to 4, are created by openings 22 incorporated into the base plate 11, in which approximately semicircular resilient tongues 24 and 25 are formed. The resilient tongues 24 and 25 are firmly connected to the base plate 11 via a web 23. The clamped test tube 10 is thus 24 and 25 included in each of the resilient tongues in a range of more than 90 o, so that it is securely locked in the recess fourteenth

Bei dem Spannmittel 21' nach Figur 3 ist an den Enden der federnden Zungen 24' und 25' jeweils ein nach innen abstehender Nocken 26 bzw. 27 angeformt, die an dem Reagenzglas 10 anliegen. Dadurch wird das Reagenzglas 10 gegen einen durch den Steg 23 gebildeten Anschlag 28 gedrückt, so daß dieses in einer vorgegebenen Lage exakt positioniert ist.3 is at the ends the resilient tongues 24 'and 25' each one inwards protruding cams 26 and 27 formed on the Apply test tube 10. As a result, the test tube 10 against a stop 28 formed by the web 23 pressed so that this in a predetermined position is positioned exactly.

Gemäß den Figuren 4 bis 6 sind bei dem Spannmittel 21'' die federnden Zungen 24'' und 25'' jeweils mit einer mit einer vorgespannten Einlage in Form eines federnden Ringes 29 oder einer Blattfeder 30 ausgestattet. Dadurch wird die Spannkraft der federnden Zungen 24'', 25'' erhöht, so daß die Grundplatte 11 auch aus einem Werkstoff hergestellt werden kann, der nur eine geringe Elastizität aufweist, dennoch sind Reagenzgläser 10 sicher in dieser arretiert.According to FIGS. 4 to 6, the clamping means 21 '' the resilient tongues 24 "and 25" each with one with a pre-tensioned insert in the form of a resilient Ring 29 or a leaf spring 30 equipped. Thereby the resilience of the resilient tongues 24 '', 25 '' increased so that the base plate 11 is also made of one material can be produced with only a low elasticity has, however, test tubes 10 are safe in this locked.

Bei dem in Figur 7 gezeigten in der Grundplatte 11 vorgesehenen Spannmittel 31 ragen in eine Durchbrechung 32 der Grundplatte 11 vier federnde Stege 33, 34, 35 und 36 hinein, die jeweils paarweise und diametral einander gegenüberliegend angeordnet sind. Des weiteren sind die federnden Stege 33, 34, 35 und 36 konvex gekrümmt ausgebildet, so daß das Reagenzglas 10 zentrisch zwischen diesen eingespannt ist.In the base plate 11 shown in FIG. 7 provided clamping means 31 protrude into an opening 32 of the base plate 11 four resilient webs 33, 34, 35 and 36 into it, each paired and diametrically opposed to each other are arranged opposite one another. Furthermore the resilient webs 33, 34, 35 and 36 are convexly curved formed so that the test tube 10 centrally between this is clamped.

Bei den in den Figuren 8, 9 und 10 dargestellten Ausführungsvarianten der Spannmittel 21, 21''' und 31', die im wesentlichen den Ausgestaltungen nach den Figuren 2 und 7 entsprechen, sind die federnden Zungen 24, 25 bzw. 24''', 25''' bzw. 33' , 34', 35' und 36' bei einem eingespannten von oben einzusetzenden Reagenzglas 10 an der Innenfläche der Durchbrechung 22 bzw. 32 der Grundplatte 11 abgestützt. Auf diese Weise ist eine besonders feste Einspannung eines Reagenzglases 10 gewährleistet, da die federnden Stege 24, 25 bzw. 24''', 25''' bzw. 33', 34', 35' und 36' in ihrer Lage arretiert sind und auch bei höheren Belastungen nicht ausweichen können.In the embodiment variants shown in FIGS. 8, 9 and 10 the clamping means 21, 21 '' 'and 31', the essentially the configurations according to the figures 2 and 7 correspond, the resilient tongues 24, 25 or 24 '' ', 25' '' or 33 ', 34', 35 'and 36' at a clamped test tube to be inserted from above 10 on the inner surface of the opening 22 or 32 of the Base plate 11 supported. This way, one is special ensures tight clamping of a test tube 10, since the resilient webs 24, 25 and 24 '' ', 25 '' 'or 33', 34 ', 35' and 36 'locked in position are and do not evade even with higher loads can.

Um dies zu bewerkstelligen, ist gemäß Figur 8 der Abstand zwischen den Außenflächen der federnden Stege 24 und 25 und der Innenfläche der Durchbrechung 22 derart gering bemessen, daß durch das Einstecken eines Reagenzglases 10 die federnden Stege 24 und 25 zumindest über einen Teilbereich an der Grundplatte 10 anliegen. Nach Figur 9 weisen die federnden Stege 24''' und 25''' zu dem gleichen Zweck in den Endbereichen nach außen abstehende Nocken 26' und 27' auf, die bei einem in die Ausnehmung 14 eingesetzten und somit eingespannten Reagenzglas 10 an der Innenfläche der in die Grundplatte 10 eingearbeiteten Durchbrechung 22 abgestützt sind. Und nach Figur 10 sind die konvex gekrümmt ausgebildeten federnden Stege 33', 34', 35' und 36' derart bemessen, daß diese bei einem eingespannten Reagenzglas 10 mit ihren Enden an der Grundplatte 11 anliegen.In order to accomplish this, the distance is according to FIG between the outer surfaces of the resilient webs 24 and 25 and the inner surface of the opening 22 so small dimensioned that by inserting a test tube 10, the resilient webs 24 and 25 at least one Place part of the base plate 10. After figure 9 have the resilient webs 24 '' 'and 25' '' to the same purpose in the end areas protruding outwards Cams 26 'and 27' on one in the recess 14 inserted and thus clamped test tube 10 on the inner surface of the incorporated in the base plate 10 Opening 22 are supported. And after Figure 10 are the convexly curved resilient Bars 33 ', 34', 35 'and 36' dimensioned such that these with a clamped test tube 10 with its ends rest on the base plate 11.

Bei dem in den Figuren 11, 12 und 13 gezeigten Spannmittel 41 ist eine in die Grundplatte 11 jeweils eingearbeitete Durchbrechung 42 etwa in Form eines Rechteckes gestaltet, so daß den in die Durchbrechung 42 paarweise hineinragenden federnden Zungen 43 und 44 ein durch Stützflächen 45 und 46 geschaffener gegenüberliegender Anschlag zugeordnet ist. Die in unterschiedlicher Weise ausgebildeten in die Ausnehmung 14 eingesetzten Reagenzgläser 10', 10'' und 10''' werden somit durch die federnden Zungen 43 und 44 gegen die Stützflächen 45 und 46 gedrückt, so daß die Reagenzgläser 10', 10'' bzw 10''' exakt positioniert sind.In the clamping means shown in Figures 11, 12 and 13 41 is one machined into the base plate 11 Opening 42 approximately in the form of a rectangle, so that the protruding into the opening 42 in pairs resilient tongues 43 and 44 through support surfaces 45 and 46 created opposite stop assigned. The trained in different ways test tubes inserted into the recess 14 10 ', 10' 'and 10' '' are thus by the resilient Tongues 43 and 44 pressed against the support surfaces 45 and 46, so that the test tubes 10 ', 10' 'or 10' '' are positioned exactly.

Gemäß der in den Figuren 14 und 15 gezeigten Ausgestaltung sind die federnden Zungen 24 und 25 auf der Unterseite der Grundplatte 11 mit sich in Achsrichtung des zu haltenden Werkstückes 10 erstreckenden Ansatzstücken 51 ausgestattet und die in Form einer Blattfeder ausgebildeten spannbaren Auflagen 52 sind auf die Ansatzstücke 51 aufgesetzt, so daß die Werkstücke 10 beim Einstecken in die Vorrichtung 1 über einen großen Bereich geführt und gespannt sind. Durch ebenfalls an der Grundplatte 11 angebrachte Nasen 53 sind die Auflagen 52 zusätzlich gesichert.According to the configuration shown in FIGS. 14 and 15 are the resilient tongues 24 and 25 on the underside the base plate 11 with itself in the axial direction to be held Workpiece 10 extending end pieces 51 equipped and those in the form of a leaf spring tensionable pads 52 are on the extensions 51st placed so that the workpieces 10 when inserted led into the device 1 over a large area and are excited. By also on the base plate 11 attached tabs 53 are the pads 52 additional secured.

Bei den in den Figuren 16 bis 19 dargestellten Spannmitteln 21IV sind an den federnden Zungen 24 und 25 Anlagenocken 63, 64 und 65 angeformt, außerdem weisen die federnden Zungen 24 und 25 Auflagenocken 66, 67 und 68 auf, die die Oberfläche der Grundplatte 11 überragen. Die Anlagenocken 63, 64 und 65 sowie die Auflagenocken 66, 67 und 68 sind hierbei gemeinsam an den federnden Zungen 24 und 25 in deren Endbereichen bzw. im Bereich des diese mit der Grundplatte 11 verbindenden Steges 23 vorgesehen, so daß eine Dreipunkt-Anlage bzw. Auflage eines abgesetzten Reagenzglases 10IV gegeben ist. Vor allem aber ist von Vorteil, daß sich zwischen den Innenmantelflächen 61 und 62 der federnden Zungen 24 und 25 und dem eingespannten Reagenzglas 10IV bzw. zwischen dessen die Grundplatte 11 übergreifenden Bund und dieser keine Ablagerungen bilden können und daß diese Flächen leicht zu reinigen sind, da ein Reinigungsmedium zwischen diesen hindurchtreten kann.In the tensioning means 21 IV shown in FIGS. 16 to 19, system cams 63, 64 and 65 are formed on the resilient tongues 24 and 25, and the resilient tongues 24 and 25 have support cams 66, 67 and 68 which cover the surface of the base plate 11 tower over. The system cams 63, 64 and 65 and the support cams 66, 67 and 68 are provided together on the resilient tongues 24 and 25 in their end regions or in the region of the web 23 connecting them to the base plate 11, so that a three-point system or A set of a set test tube 10 IV is given. Above all, however, it is advantageous that no deposits can form between the inner jacket surfaces 61 and 62 of the resilient tongues 24 and 25 and the clamped test tube 10 IV or between which the collar 11 engages over the base plate 11 and that these surfaces are easy to clean , because a cleaning medium can pass between them.

Gemäß Figur 18 sind die federnden Zungen 24 und 25 in ihrer Länge derart bemessen, daß diese in Ausgangslage mit ihren freien Stirnflächen 69 und 70 unmittelbar aneinander oder, nach Figur 19, an einem zwischen diesen angeordneten Anschlag 71, der durch einen an der Grundplatte 11 angeformten Ansatz 72 gebildet ist, anliegen. Dadurch wird verhindert, daß beim Reinigen des Reagenzglasständers 1 in einer heißen Atmosphäre sich die federnden Zungen 24 und 25 in der Weise verformen können, daß das Aufbiegen beim Einstecken eines Reagenzglases eine mitunter zu hohe Kraft erfordern würde, die Spannkraft der federnden Zungen 24 und 25 bleibt vielmehr, da diese sich nicht nach innen verformen können, konstant.According to FIG. 18, the resilient tongues 24 and 25 measured in length so that this in the starting position with their free end faces 69 and 70 immediately to each other or, according to Figure 19, to one between them arranged stop 71, which by a on the base plate 11 molded projection 72 is formed, lie. This prevents the test tube rack from being cleaned 1 in a hot atmosphere can deform resilient tongues 24 and 25 in such a way that bending up when inserting a test tube a force that is sometimes too high would require resilience rather, the resilient tongues 24 and 25 remain there they cannot deform inwards, constantly.

In Figur 20 ist gezeigt, daß eine mit Spannmitteln in Form von federnden Stegen 24 und 25 versehene Grundplatte 11' auch in einem zur Aufnahme von Flaschen 10V versehenen Behältnis 2 eingesetzt werden kann, um diese zu arretieren. Die Grundplatte 11' ist hierbei mit Abstand zum Boden 4 des Behältnisses 2 an dessen Wandung 3 angebracht, so daß die von oben in die Grundplatte 11' eingesteckten Flaschen 10V unverrückbar in dem Behältnis 2 gehalten sind.In FIG. 20 it is shown that a base plate 11 'provided with clamping means in the form of resilient webs 24 and 25 can also be used in a container 2 provided for holding bottles 10 V in order to lock them. The base plate 11 'is mounted at a distance from the bottom 4 of the container 2 on its wall 3, so that the bottles 10 V inserted into the base plate 11' from above are held immovably in the container 2.

Claims (13)

  1. A device (1) for holding rod-shaped articles, in particular for holding cylindrical containers, e.g. in the form of test tubes (10), comprising a base plate (11) arranged at a distance from a base, with the base plate (11) possessing clamping elements (21) for holding the article to be held and with at least two springing tongues (24, 25; 33, 34, 35, 36; 43, 44) provided as clamping elements (21; 31; 41) which can be pivoted in the plane of the base plate (11) and which are formed by a penetration (22; 32; 42) worked into the base plate (11) and act in pairs on the clamped article (test tube 10),
    characterised in that,
    the springing tongues (24, 25) are each provided with a pre-stressed insert or support in the form of a spring ring (29), a leaf spring (30; 52) or similar.
  2. The holding device in accordance with Claim 1,
    characterised in that,
    the springing tongues (24, 25) are provided with three or more stop cams (63, 64, 65) formed onto the inside surfaces (61, 62) of the springing tongues (24, 25), with the stop cams (63, 64, 65) projecting inwards beyond the inside surfaces (61, 62) and arranged in a radial orientation.
  3. The holding device in accordance with Claim 2,
    characterised in that,
    one of the stop cams (63) is located in the area of the web (23) which connects the springing tongues (24, 25) to the base plate (11) and each of the springing tongues (24, 25) has a stop cam (64, 65) in its end area.
  4. The holding device in accordance with one or more of Claims 1 to 3,
    characterised in that,
    The springing tongues (24, 25) are provided with projections (51) extending axially in relation to the article (10) to be held and, in a preferred embodiment, formed onto the underside of the base plate (11).
  5. The holding device in accordance with Claim 4,
    characterised in that,
    the pre-stressed inserts and/or supports (52) are arranged in and/or on the projections (51).
  6. The holding device in accordance with one or more of Claims 1 to 5,
    characterised in that,
    the springing tongues (24, 25) are provided with three or more stop cams (66, 67, 68) projecting beyond the surface of the base plate (11).
  7. The holding device in accordance with one or more of Claims 1 to 6,
    characterised in that,
    the stop cams (63, 64, 65) and the stop cams (66, 67, 68) of the springing tongues (24, 25) are jointly formed onto the springing tongues (24, 25) or onto these and the web (23), with the stop cams (63, 64, 65) and the stop cams (66, 67, 68) being arranged, in a preferred embodiment, radially abutting one another.
  8. The holding device in accordance with one or more of Claims 1 to 7,
    characterised in that,
    the length of the springing tongues (24, 25) is such that they are directly in contact with one another or with a stop (71) in their initial position with their end surfaces (69, 70) free.
  9. The holding device in accordance with Claim 8,
    characterised in that,
    the stop (71) which acts in conjunction with the springing tongues (24, 25) is formed by a shoulder (72) projecting radially from the base plate (11) opposite to the web (23) which connects the springing tongues (24, 25) to the base plate (11).
  10. The holding device in accordance with one or more of Claims 1 to 9,
    characterised in that,
    the recess (14) or the penetration is each provided with at least one stop (28 or support surfaces 45, 46) worked onto the base plate (11) for the article (10) to be clamped.
  11. The holding device in accordance with Claim 10,
    characterised in that,
    the stop (28) is formed by the web (23) which connects the springing tongues (24, 25) to the base plate (11).
  12. The holding device in accordance with Claim 11,
    characterised in that,
    the springing tongues (24, 25) are provided, in a preferred embodiment, with an inwardly projecting cam (26, 27) at each of their free ends, with the cam (26, 27) serving to contact the article (10) to be clamped.
  13. The holding device in accordance with Claim 10,
    characterised in that,
    the stop is formed by two support surfaces (45, 46) diverging from one another and each delimiting the penetrations (42).
EP94101176A 1993-02-06 1994-01-27 Holding device Expired - Lifetime EP0610726B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4303501 1993-02-06
DE4303501A DE4303501A1 (en) 1993-02-06 1993-02-06 Holding device

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EP0610726A1 EP0610726A1 (en) 1994-08-17
EP0610726B1 true EP0610726B1 (en) 1999-12-08

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AT (1) ATE187357T1 (en)
DE (2) DE4303501A1 (en)

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EP0610726A1 (en) 1994-08-17
US5452810A (en) 1995-09-26
DE59408972D1 (en) 2000-01-13
ATE187357T1 (en) 1999-12-15
DE4303501A1 (en) 1994-08-11
US5579929A (en) 1996-12-03

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