EP0433601A2 - Hydraulic toggle lever device - Google Patents

Hydraulic toggle lever device Download PDF

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Publication number
EP0433601A2
EP0433601A2 EP90120066A EP90120066A EP0433601A2 EP 0433601 A2 EP0433601 A2 EP 0433601A2 EP 90120066 A EP90120066 A EP 90120066A EP 90120066 A EP90120066 A EP 90120066A EP 0433601 A2 EP0433601 A2 EP 0433601A2
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EP
European Patent Office
Prior art keywords
housing
piston rod
toggle
lever
clamping
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.)
Granted
Application number
EP90120066A
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German (de)
French (fr)
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EP0433601B1 (en
EP0433601A3 (en
Inventor
Josef-Gerhard Tünkers
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Individual
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Individual
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Publication of EP0433601A2 publication Critical patent/EP0433601A2/en
Publication of EP0433601A3 publication Critical patent/EP0433601A3/en
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Publication of EP0433601B1 publication Critical patent/EP0433601B1/en
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    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive

Definitions

  • the invention relates to a pressure medium-operated toggle lever tensioning device according to the preamble of claim 1.
  • Such a toggle lever tensioning device is previously known from DE-AS 22 22 686.
  • a support plate in particular transport trolley or pallet support plate, is already known, with a clamping device for objects that can be clamped on the plate, the clamping device having a clamping lever as a connecting link between two rockers and forming a four-bar linkage with its clamping part protrudes beyond the joint of a rocker and an adjusting drive element is arranged on the four-bar linkage.
  • the support plate is provided with a through opening arranged in the adjustment path of the tensioning lever, the tensioning device being arranged under the support plate and the tensioning part of the Clamping lever is designed in the form of a hook, the joints of the four-bar linkage being arranged in such a way and the rockers are dimensioned such that the clamping lever in the clamping position extends across the passage opening with its longitudinal axis transverse to its course when the clamping lever is in the retracted position under the support plate.
  • the drive member of the four-bar linkage is designed in the form of a toggle lever drive.
  • a clamping tool is known with a back and forth in guides on a carrier, actuated by a drive pressure block and a pivot arm articulated via a fixed pivot on the carrier with an inclined operating slot extending from the movement path of the printing block , with which the pressure block slidably cooperates in order to pivot and clamp the clamping arm.
  • the actuating slot contains a first leg that is more inclined to the path of movement of the printing block and a second leg that is inclined less to the path of movement of the printing block.
  • a clamping device in which a collet is moved back and forth by a piston-cylinder unit which is acted upon alternately on both sides by pressure.
  • the tensioning arm is arranged so as to be pivotable via a tab on a bolt fixed to the housing and at a distance from it by a second bolt on the housing.
  • a clamping device in particular for clamping workpieces, which has a lifting cylinder arranged on a base plate with clamping iron, the lifting cylinder being pivoted at one end to the base plate, while the other end is a guide device, preferably Guide pins, which are guided by fixed curved guideways.
  • the invention has for its object to improve a toggle lever clamping device of the prerequisite type to the extent that it can also be used as a base clamp.
  • this toggle lever tensioning device is made usable as a base clamp, so that the tensioning hook can be moved completely into the space of the housing in which the toggle joint arrangement is also located and which is connected to the free atmosphere.
  • This tensioning hook is moved in the tightest of spaces and precisely guided by a link guide. This also results in a stable articulation and guidance of the tensioning hook.
  • the tensioning hook can always be moved exactly on its predetermined path without the need for many joints and link elements.
  • the tension hook itself passes through an opening in the top plate of the Out of the housing if it is to be brought into the clamping position.
  • Claim 2 describes a particularly advantageous embodiment, in which the housing consists of one piece from a casting and can be connected, for example, with the cylinder for the toggle lever clamping device in one piece, or in another way functionally in one piece.
  • the upper plate of the cast part simultaneously forms a mounting plate and can have suitable bores or holes for this, which also applies to the plate opposite this plate.
  • the housing closes the toggle joint arrangement and the link support relatively dirt and dust-tight. On in any case, it protects these parts from direct impact and shock loads ( claim 3 ).
  • the reference numeral 1 denotes a housing-like cylinder in which a piston 2 is displaceable and sealing in the direction A by seals, not shown or B is displaceably guided in a cylinder space 3.
  • Pressure medium in particular air pressure, is supplied to the cylinder chamber 3 through connection channels 4 or 5, as a result of which the piston 2 is to be acted upon alternately on both sides with pressure medium pressure.
  • a piston rod 6 is integrally connected to the piston 2 and is sealed in the region of a collar 7 by sealing means, not shown.
  • the piston rod 6 exits into a movement space 8, which is connected to the free atmosphere or an ambient space via an opening 9 of large cross section.
  • the movement space 8 is enclosed by a housing 10 which, in the embodiment shown, consists of one piece from cast material and is either integrally connected to the cylinder 1 or is functionally connected. The latter is not shown.
  • a toggle joint arrangement 11 is arranged, which is assigned at least one bracket 12, which is pivotally connected to the piston rod 6 via a piston rod pin 13.
  • the piston rod pin 13 is orthogonal to the longitudinal axis of the Piston rod 6 arranged and carries a roller 14 and 15 at each end.
  • Each of the rollers 14 and 15 is guided in a guide groove 16 and 17, respectively.
  • the guide grooves 16 and 17 run parallel to one another and parallel to the longitudinal axis of the piston rod 6 and are part of the housing 10 and incorporated therein. As a result, the piston rod pin 13 is guided in the housing 10 with relatively little friction, which also has advantages when the toggle joint arrangement 11 is driven over dead center.
  • the tab 12 is pivotally coupled at its end via a stationary toggle joint axis 18 to a rocker 19 which is arranged in the housing 10 so as to be pivotable about an axis 20 fixed to the housing.
  • a two-armed lever 21 is pivotally connected to the axis 18, which is arranged pivotably in the direction C or D and which can be pivoted completely into the movement space 8 from the tensioned position from FIG. 1 into the release position according to FIG.
  • the two-armed lever 21 is guided through a pivot pin 22 in a link slot 23, the longitudinal axis of which extends approximately at 45 ° to the longitudinal axis of the piston rod 6.
  • the pivot pin 22 can at its ends with at least one roller for low friction be provided.
  • the link slot 23 can only be provided on one housing side of the housing 10. However, it is also possible to arrange the link slots in pairs on opposite sides of the housing and to guide the pivot pin 22 at its opposite end through a roller in the associated link slot.
  • an end stop is arranged, which is adjustable by a screw 25.
  • inductive proximity switches or the like can also be assigned to the piston 2. It is also possible to change the shape of the two-armed lever 21 as required. As can be seen, the two-armed lever 21 describes a relatively narrow circular arc, so that in the release position it is arranged in a protected manner in the movement space 8.
  • the upper plate 26 can be provided with one or more bores for fastening the toggle lever tensioning device, although this is not shown. This also applies to the side plate 27 and the base plate 28.

Abstract

The invention relates to a toggle lever device with a piston rod guided by a roller on one side and with a attached housing in which the toggle lever device is arranged in protected fashion. The toggle lever device is designed as a so-called substructure tension jack and needs only relatively few joints and connecting rod elements.

Description

Die Erfindung Betrifft eine druckmittelbetätogbare Knie­hebelspannvorrichtung nach dem Oberbegriff des Pa­tentanspruches 1.The invention relates to a pressure medium-operated toggle lever tensioning device according to the preamble of claim 1.

Eine derartige Kniehebelspannvorrichtung ist aus der DE-­AS 22 22 686 vorbekannt.Such a toggle lever tensioning device is previously known from DE-AS 22 22 686.

Aus der DE-PS 34 19 878 ist eine Tragplatte, insbesondere Transportswagen- oder Palettentragplatte, vorbekannt, mit einer Spannvorrichtung für auf der Platte festspannbare Gegenstände, wobei die Spannvorrichtung einen Spannhebel als Verbindungsglied zweier Schwingen aufweist und mit diesen ein Gelenkviereck bildet, mit seinem Spannteil das Gelenk der einen Schwinge überragt und am Gelenkviereck ein Verstellantriebsglied angeordnet ist. Die Tragplatte ist mit einer im Stellweg des Spannhebels angeordneten Durchgriffsöffnung versehen, wobei die Spannvorrichtung unter der Tragplatte angeordnet ist und das Spannteil des Spannhebels in Form eines Hakens ausgebildet ist, wobei die Gelenke des Gelenkvierecks derart angeordnet und die Schwingen derart bemessen sind, daß der Spannhebel in Spannstellung die Durchgriffsöffnung durchgreifend mit seiner Längsachse quer zu deren Verlauf bei Rückzugsstel­lung des Spannhebels unter der Tragplatte steht. Das An­triebsglied des Gelenkvierecks ist in Form eines Kniehe­belantriebes ausgebildet.From DE-PS 34 19 878 a support plate, in particular transport trolley or pallet support plate, is already known, with a clamping device for objects that can be clamped on the plate, the clamping device having a clamping lever as a connecting link between two rockers and forming a four-bar linkage with its clamping part protrudes beyond the joint of a rocker and an adjusting drive element is arranged on the four-bar linkage. The support plate is provided with a through opening arranged in the adjustment path of the tensioning lever, the tensioning device being arranged under the support plate and the tensioning part of the Clamping lever is designed in the form of a hook, the joints of the four-bar linkage being arranged in such a way and the rockers are dimensioned such that the clamping lever in the clamping position extends across the passage opening with its longitudinal axis transverse to its course when the clamping lever is in the retracted position under the support plate. The drive member of the four-bar linkage is designed in the form of a toggle lever drive.

Aus der DE-AS 19 50 721 ist ein Spannwerkzeug mit einem in Führungen an einem Träger hin- und hergehend gelager­ten, von einem Antrieb betätigbaren Druckblock und einem über einen festen Drehzapfen am Träger angelenkten Spann­arm mit einem geneigt von der Bewegungsbahn des Druck­blocks verlaufenden Betätigungsschlitz vorbekannt, mit dem der Druckblock zwecks Verschwenkens und Festklemmens des Spannarms verschiebbar zusammenwirkt. Der Betäti­gungsschlitz enthält einen ersten, zur Bewegungsbahn des Druckblocks stärker geneigten Schenkel und einen zweiten, zur Bewegungsbahn des Druckblocks schwächer geneigten Schenkel.From DE-AS 19 50 721 a clamping tool is known with a back and forth in guides on a carrier, actuated by a drive pressure block and a pivot arm articulated via a fixed pivot on the carrier with an inclined operating slot extending from the movement path of the printing block , with which the pressure block slidably cooperates in order to pivot and clamp the clamping arm. The actuating slot contains a first leg that is more inclined to the path of movement of the printing block and a second leg that is inclined less to the path of movement of the printing block.

Aus der US 35 45 050 ist ein Spannzeug bekannt, bei wel­chem eine Spannzange durch eine abwechselnd beidseitig durch Druck beaufschlagte Kolbenzylinder-Einheit Hin- und herbewegt wird. Der Spannarm ist über eine Lasche an ei­nem gehäusefesten Bolzen und im Abstand dazu durch einen zweiten Bolzen am Gehäuse schwenkbeweglich angeordnet.From US 35 45 050 a clamping device is known, in which a collet is moved back and forth by a piston-cylinder unit which is acted upon alternately on both sides by pressure. The tensioning arm is arranged so as to be pivotable via a tab on a bolt fixed to the housing and at a distance from it by a second bolt on the housing.

Aus der DD-PS 60 527 ist eine Spannvorrichtung, insbeson­dere zum Spannen von Werkstücken vorbekannt, die einen auf einer Grundplatte angeordneten Hubzylinder mit Spann­eisen aufweist, wobei der Hubzylinder mit einem Ende schwenkbar an der Grundplatte angelenkt ist, während das andere Ende eine Führungseinrichtung, vorzugsweise Füh­rungsstifte, aufweist, die durch feststehende kurvenför­mige Führungsbahnen geführt sind.From DD-PS 60 527 a clamping device, in particular for clamping workpieces, is known, which has a lifting cylinder arranged on a base plate with clamping iron, the lifting cylinder being pivoted at one end to the base plate, while the other end is a guide device, preferably Guide pins, which are guided by fixed curved guideways.

Der Erfindung liegt die Aufgabe zugrunde, eine Kniehebel­spannvorrichtung der vorausgesetzten Gattung dahingehend zu verbessern, daß sie auch als Unterbauspanner verwend­bar ist.The invention has for its object to improve a toggle lever clamping device of the prerequisite type to the extent that it can also be used as a base clamp.

Ausgehend von einer Kniehebelspannvorrichtung der voraus­gesetzten Art wird diese Aufgabe durch die in Pa­tentanspruch 1 wiedergegebenen Merkmale gelöst.Starting from a toggle lever tensioning device of the required type, this object is achieved by the features set out in claim 1 .

Bei Ausgestaltung einer Kniehebelspannvorrichtung gemäß der Erfindung ergibt sich der Vorteil, daß die vorteil­hafte Kniehebelspannvorrichtung der vorausgesetzten Art prinzipiell nicht konstruktiv verändert zu werden braucht. Durch die besondere Ausgestaltung der Erfindung wird diese Kniehebelspannvorrichtung aber als Unterbau­spanner verwendungsfähig gemacht, so daß der Spannhaken vollkommen in den Raum des Gehäuses einzufahren ist, in der sich auch die Kniehebelgelenkanordnung befindet und der an die freie Atmosphäre angeschlossen ist. Dabei wird dieser Spannhaken auf engstem Raum bewegt und durch eine Kulissenführung präzise geführt. Dadurch ergibt sich auch eine stabile Anlenkung und Führung des Spannhakens. Infolgedessen läßt sich der Spannhaken immer genau auf seiner vorbestimmten Bahn bewegen, ohne daß viele Gelenke und Lenkerelemente erforderlich sind. Der Spannhaken selbst tritt durch eine Öffnung an der oberen Platte des Gehäuses heraus, falls er in Spannstellung gebracht wer­den soll.When designing a toggle lever tensioning device according to the invention, there is the advantage that the advantageous toggle lever tensioning device of the type required does not in principle need to be changed in terms of construction. Due to the special design of the invention, this toggle lever tensioning device is made usable as a base clamp, so that the tensioning hook can be moved completely into the space of the housing in which the toggle joint arrangement is also located and which is connected to the free atmosphere. This tensioning hook is moved in the tightest of spaces and precisely guided by a link guide. This also results in a stable articulation and guidance of the tensioning hook. As a result, the tensioning hook can always be moved exactly on its predetermined path without the need for many joints and link elements. The tension hook itself passes through an opening in the top plate of the Out of the housing if it is to be brought into the clamping position.

Zwar ist ein sogeannte "Tragplatte" durch die DE-PS 34 19 878 vorbekannt, jedoch weist diese Konstruktion eine ungünstige Anhäufung von Lenkerelementen, Gelenkpunkten und Schwenkachsen auf, die alle dem Verschleiß unterlie­gen, so daß die Gelenkanordnung - besonders nach einer entsprechend hohen Lastspielzeit - zum Schlackern neigt.Although a so-called "support plate" is previously known from DE-PS 34 19 878, this construction has an unfavorable accumulation of handlebar elements, articulation points and pivot axes, all of which are subject to wear, so that the articulation arrangement - especially after a correspondingly high load cycle - tends to slag.

Patentanspruch 2 beschreibit eine besonders vorteilhafte Ausführungsform, bei welcher des Gehäuse materialmäßig einstückig aus einem Gußteil besteht und zum Beispiel mit dem Zylinder für die Kniehebelspannvorrichtung material-­mäßig einstückig, oder in sonstiger Weise funktionell einstückig, verbunden sein kann. Die obere Platte des Gußteils bildet gleichzeitig eine Montageplatte und kann hierfür geeignete Bohrungen oder Löcher aufweisen, was auch für die dieser Platte gegenüberliegende Platte gilt. Das Gehäuse schließt die Kniehebelgelenkanordnung und die Kulissenförderung relativ schmutz- und staubdicht ab. Auf jeden Fall schützt sie diese Teile vor direkter Schlag- und Stoßbeanspruchung (Patentanspruch 3). Claim 2 describes a particularly advantageous embodiment, in which the housing consists of one piece from a casting and can be connected, for example, with the cylinder for the toggle lever clamping device in one piece, or in another way functionally in one piece. The upper plate of the cast part simultaneously forms a mounting plate and can have suitable bores or holes for this, which also applies to the plate opposite this plate. The housing closes the toggle joint arrangement and the link support relatively dirt and dust-tight. On in any case, it protects these parts from direct impact and shock loads ( claim 3 ).

In den Patentansprüchen 4 und 5 sind weitere vorteilhafte Ausführungsformen der Erfindung beschrieben. Claims 4 and 5 describe further advantageous embodiments of the invention.

In den Zeichnung ist die Erfindung - teils schematisch - an einem Ausführungsbeispiel veranschaulicht. Es zeigen:

  • Fig. 1 eine Kniehebelspannvorrichtung gemäß der Erfin­dung im Längsschnitt, teils in der Ansicht bei in Spannstellung gefahrenem Spannhaken und Übertotpunktlage der Kniehebelgelenkanordnung;
  • Fig. 2 die aus Figur 1 ersichtliche Kniehebelspannvor­richtung, allerdings in Lösestellung, wobei der Spannhaken vollkommen in das Gehäuse eingefah­ren ist und
  • Fig. 3 eine Teildraufsicht zu Figur 1.
In the drawing, the invention is illustrated - partly schematically - using an exemplary embodiment. Show it:
  • 1 shows a toggle lever tensioning device according to the invention in longitudinal section, partly in view with the tensioning hook moved into the tensioned position and the dead center position of the toggle lever joint arrangement;
  • 2 shows the toggle lever tensioning device shown in FIG. 1, but in the release position, the tensioning hook being completely retracted into the housing and
  • 3 shows a partial top view of FIG. 1.

Mit dem Bezugszeichen 1 ist ein gehäuseartiger Zylinder bezeichnet, in dem ein Kolben 2 durch nicht dargestellte Dichtungen längsverschieblich und dichtend in Richtung A bzw. B in einem Zylinderraum 3 verschieblich geführt ist. Dem Zylinderraum 3 wird durch Anschlußkanäle 4 bzw. 5 Druckmittel, insbesondere Luftdruck, zugeführt, wodurch der Kolben 2 abwechselnd beidseitig mit Druckmitteldruck zu beaufschlagen ist.The reference numeral 1 denotes a housing-like cylinder in which a piston 2 is displaceable and sealing in the direction A by seals, not shown or B is displaceably guided in a cylinder space 3. Pressure medium, in particular air pressure, is supplied to the cylinder chamber 3 through connection channels 4 or 5, as a result of which the piston 2 is to be acted upon alternately on both sides with pressure medium pressure.

Mit dem Kolben 2 ist eine Kolbenstange 6 einstückig ver­bunden, die im Bereich eines Kragens 7 durch nicht darge­stellte Dichtungsmittel abgedichtet ist. Die Kolbenstange 6 tritt in einen Bewegungsraum 8 aus, der über eine Öff­nung 9 großen Querschnittes an die freie Atmosphäre oder einen Umgebungsraum angeschlossen ist.A piston rod 6 is integrally connected to the piston 2 and is sealed in the region of a collar 7 by sealing means, not shown. The piston rod 6 exits into a movement space 8, which is connected to the free atmosphere or an ambient space via an opening 9 of large cross section.

Der Bewegungsraum 8 wird von einem Gehäuse 10 umschlos­sen, das bei der dargestellten Ausführungsform material­mäßig einstückig aus Guß besteht und entweder mit dem Zy­linder 1 materialmäßig einstückig oder funktionell ver­bunden ist. Letzteres ist nicht dargestellt.The movement space 8 is enclosed by a housing 10 which, in the embodiment shown, consists of one piece from cast material and is either integrally connected to the cylinder 1 or is functionally connected. The latter is not shown.

In dem Bewegungsraum 8 ist eine Kniehebelgelenkanordnung 11 angeordnet, der mindestens eine Lasche 12 zugeordnet ist, die über einen Kolbenstangenbolzen 13 mit der Kolbenstange 6 schwenkbeweglich verbunden ist. Der Kolbenstangenbolzen 13 ist orthogonal zur Längsachse der Kolbenstange 6 angeordnet und trägt an jedem Ende eine Rolle 14 bzw. 15. Jede der Rollen 14 und 15 ist in einer Führungsnut 16 bzw. 17 geführt. Die Führungsnuten 16 und 17 verlaufen parallel zueinander und parallel zur Längsachse der Kolbenstange 6 und sind Bestandteil des Gehäuses 10 und in diese eingearbeitet. Dadurch wird der Kolbenstangenbolzen 13 relativ reibungsarm im Gehäuse 10 geführt, was auch Vorteile beim Übertotpunktfahren der Kniehebelgelenkanordnung 11 mit sich bringt.In the movement space 8, a toggle joint arrangement 11 is arranged, which is assigned at least one bracket 12, which is pivotally connected to the piston rod 6 via a piston rod pin 13. The piston rod pin 13 is orthogonal to the longitudinal axis of the Piston rod 6 arranged and carries a roller 14 and 15 at each end. Each of the rollers 14 and 15 is guided in a guide groove 16 and 17, respectively. The guide grooves 16 and 17 run parallel to one another and parallel to the longitudinal axis of the piston rod 6 and are part of the housing 10 and incorporated therein. As a result, the piston rod pin 13 is guided in the housing 10 with relatively little friction, which also has advantages when the toggle joint arrangement 11 is driven over dead center.

Die Lasche 12 ist an ihrem Ende über eine ortsunbewegli­che Kniehebelgelenkachse 18 schwenkbeweglich mit einer Schwinge 19 gekuppelt, die um eine gehäusefeste Achse 20 in dem Gehäuse 10 schwenkbeweglich angeordnet ist. Außer­dem ist mit der Achse 18 ein zweiarmiger Hebel 21 schwenkbeweglich verbunden, der in Richtung C bzw. D schwenkbeweglich angeordnet ist und der von der Spann­stellung aus Figur 1 in die Lösestellung gemäß Figur 2 vollkommen in den Bewegungsraum 8 einzuschwenken ist. Da­bei wird der zweiarmige Hebel 21 durch einen Schwenkbol­zen 22 in einem Kulissenschlitz 23 geführt, dessen Längsachse etwa unter 45 ° zur Längsachse der Kolben­stange 6 verläuft. Der Schwenkbolzen 22 kann an seinen Enden mit mindestens einer Rolle zur reibungsarmen Füh­ rung versehen sein. Der Kulissenschlitz 23 kann nur an einer Gehäuseseite des Gehäuses 10 vorgesehen sein. Es ist aber auch möglich, die Kulissenschlitze paarweise auf gegenüberliegenden Gehäuseseiten anzuordnen und den Schwenkbolzen 22 an seinem abgekehrten Ende durch je eine Rolle in dem zugeordneten Kulissenschlitz zu führen.The tab 12 is pivotally coupled at its end via a stationary toggle joint axis 18 to a rocker 19 which is arranged in the housing 10 so as to be pivotable about an axis 20 fixed to the housing. In addition, a two-armed lever 21 is pivotally connected to the axis 18, which is arranged pivotably in the direction C or D and which can be pivoted completely into the movement space 8 from the tensioned position from FIG. 1 into the release position according to FIG. The two-armed lever 21 is guided through a pivot pin 22 in a link slot 23, the longitudinal axis of which extends approximately at 45 ° to the longitudinal axis of the piston rod 6. The pivot pin 22 can at its ends with at least one roller for low friction be provided. The link slot 23 can only be provided on one housing side of the housing 10. However, it is also possible to arrange the link slots in pairs on opposite sides of the housing and to guide the pivot pin 22 at its opposite end through a roller in the associated link slot.

Bei 24 ist ein Endanschlag angeordnet, der durch eine Schraube 25 verstellbar ist.At 24 an end stop is arranged, which is adjustable by a screw 25.

Im Bedarfsfalle können dem Kolben 2 auch induktive Näh­rungsschalter oder dergleichen zugeordnet sein. Außerdem ist es möglich, die Form des zweiarmigen Hebels 21 je nach Bedarf zu ändern. Wie erkennbar ist, beschreibt der zweiarmige Hebel 21 einen relative engen Kreisbogen, so daß er in Lösestellung ganz in dem Bewegungsraum 8 ge­schützt angeordnet ist.If necessary, inductive proximity switches or the like can also be assigned to the piston 2. It is also possible to change the shape of the two-armed lever 21 as required. As can be seen, the two-armed lever 21 describes a relatively narrow circular arc, so that in the release position it is arranged in a protected manner in the movement space 8.

Die obere Platte 26 kann - was allerdings nicht darge­stellt ist - mit einer oder mehreren Bohrungen zum Befe­stigen der Kniehebelspannvorrichtung versehen sein. Dies gilt auch für die Seitenplatte 27 und die Bodenplatte 28.The upper plate 26 can be provided with one or more bores for fastening the toggle lever tensioning device, although this is not shown. This also applies to the side plate 27 and the base plate 28.

Die in der Zusammenfassung, in den Patentansprüchen und in der Beschreibung beschribenen sowie aus der Zeichnung ersichtlichen Merkmale können sowohl einzeln als auch in beliebigen Kombinationen für die Verwirklichung der Er­findung wesentlich sein.The features described in the abstract, in the patent claims and in the description, as well as apparent from the drawing, can be essential for realizing the invention both individually and in any combination.

BezugszeichenlisteReference symbol list

  • 1 Zylinder, Gehäuse1 cylinder, housing
  • 2 Kolben2 pistons
  • 3 Zylinderraum3 cylinder room
  • 4 Anschlußkanal4 connection channel
  • 5 Anschlußkanal5 connection channel
  • 6 Kolbenstange6 piston rod
  • 7 Kragen7 collar
  • 8 Bewegungsraum8 movement space
  • 9 Durchtrittsöffnung9 passage opening
  • 10 Gehäuse10 housing
  • 11 Kniehebelgelenkanordnung11 toggle joint arrangement
  • 12 Lasche12 tab
  • 13 Kolbenstangenbolzen13 piston rod bolts
  • 14 Rolle14 roll
  • 15 Rolle15 roll
  • 16 Führungsnut16 guide groove
  • 17 Führungsnut17 guide groove
  • 18 Kniehebelgelenkachse, ortsunbewegliche18 toggle joint axis, stationary
  • 19 Schwinge19 swingarm
  • 20 Achse, gehäusefeste20 axis, fixed to the housing
  • 21 Hebel, zweiarmiger21 levers, two-armed
  • 22 Schwenkbolzen22 pivot pins
  • 23 Kulissenschlitz23 slot slot
  • 24 Endanschlag24 end stop
  • 25 Schraube25 screw
  • 26 Platte, oben26 plate, top
  • 27 Seitenplatte des Gehäuses 1027 side plate of housing 10
  • 28 Bodenplatte28 base plate
  • A Bewegungsrichtung des Kolbens 2A Direction of movement of the piston 2
  • B Bewegungsrichtung des Kolbens 2B Direction of movement of the piston 2
  • C Schwenkrichtung des Spannhakens 21C Swivel direction of the clamping hook 21
  • D Schwenkrichtung des Spannhakens 21D Swivel direction of the clamping hook 21
Literaturverzeichnisbibliography

DE-AS 19 50 721 DE-AS 22 22 686 DE-PS 35 20 528 DE-PS 34 19 878 DE-PS 32 01 013 DE-PS 25 52 441 DE-GM 78 06 055 DE-GM 84 16 388 DD-PS 60 527 EP-OS 01 63 219 FR-PS 21 97 701 GB-PS 8 21 132 GB-PS 7 78 865 US-PS 34 80 271 US-PS 24 36 941 US-PS 34 45 050DE-AS 19 50 721 DE-AS 22 22 686 DE-PS 35 20 528 DE-PS 34 19 878 DE-PS 32 01 013 DE-PS 25 52 441 DE-GM 78 06 055 DE-GM 84 16 388 DD- PS 60 527 EP-OS 01 63 219 FR-PS 21 97 701 GB-PS 8 21 132 GB-PS 7 78 865 US-PS 34 80 271 US-PS 24 36 941 US-PS 34 45 050

Claims (5)

1. Druckmittelbetätigbare Kniehebelspannvorrichtung, insbesondere für Karosserieteile, bestehend aus 1.1 einem ein- oder mehrteiligen Gehäuse (1, 10) mit einem Zylinderraum (3) für den Kolben (2) und einem Bewegungsraum (8) für die Kolben stange (6) und die Kniehebelgelenkanordnung (11), 1.2 Führungsmitteln am freien Kolbenstangenende für die Kolbenstange, die in Führungsnuten (16, 17) des Gehäuses (1) geführt sind, und einem Kolbenstangenbolzen, 1.3 einer Lasche, die auf dem Kolbenstangenbolzen (13) und auf einer Kniehebelgelenkachse (18) schwenkbar gelagert ist, 1.4 einem zweiarmigen Spannhebel (21), dessen An­trienbsende gleichfalls auf der Kniehebelge­lenkachse (18) gelagert ist und dessen freies Ende als Spannteil (Spannhaken) dient, 1.5 einem am Gehäuse (1, 10) abgestützten und in den Spannhebel eingreifenden Schwenkbolzen (22), dadurch gekennzeichnet, daß 1.6 der Schwenkbolzen (22) in einem Kulissen­schlitz (23) des Gehäuses (10) geführt ist, 1.7 eine schwenkbar im Gehäuse (10) gelagerte Schwinge (19) mit ihrem anderen Schwingenende gleichfalls auf der Kniehebelgelenkachse (18) gelagert ist. 1. Pressure-medium operated toggle lever tensioning device, in particular for body parts, consisting of 1.1 a one-part or multi-part housing (1, 10) with a cylinder space (3) for the piston (2) and a movement space (8) for the piston rod (6) and the toggle joint arrangement (11), 1.2 guide means on the free piston rod end for the piston rod, which are guided in guide grooves (16, 17) of the housing (1), and a piston rod pin, 1.3 a tab which is pivotably mounted on the piston rod pin (13) and on a toggle joint axis (18), 1.4 a two-armed clamping lever (21), the drive end of which is also mounted on the toggle joint axis (18) and the free end of which serves as a clamping part (clamping hook), 1.5 a pivot pin (22) supported on the housing (1, 10) and engaging in the tensioning lever, characterized in that 1.6 the pivot pin (22) is guided in a link slot (23) of the housing (10), 1.7 a rocker arm (19) which is pivotably mounted in the housing (10) is likewise mounted with its other rocker end on the toggle joint axis (18). 2. Kniehebelspannvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß einem Schwenkbolzen (22) minde­stens eine Rolle zugeornet ist, mit der der Schwenkbolzen (22) in einem Kulissenschlitz (23) geführt ist, wobei der Kulissenschlitz (23) unter einem spitzen Winkel die Längsachse der Kolben­stange (6) schneidet.2. toggle lever tensioning device according to claim 1, characterized in that a pivot pin (22) is assigned at least one role with which the pivot pin (22) in a link slot (23) is guided, the link slot (23) intersecting the longitudinal axis of the piston rod (6) at an acute angle. 3. Kniehebelspannvorrichtung nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß das Gehäuse (10) materialmäßig einstückig auf Guß besteht und an einer oberen Platte (26) und/oder an einer Seiten­platte (27) und/oder an einer Bodenplatte (28) Befestigungsbohrungen und/oder Schrauben bzw. Schraublöcher zum Montieren aufweist.3. toggle lever tensioning device according to claim 1 and / or 2, characterized in that the housing (10) consists of one piece material on cast and on an upper plate (26) and / or on a side plate (27) and / or on a bottom plate (28 ) Has mounting holes and / or screws or screw holes for mounting. 4. Kniehebelspannvorrichtung nach Anspruch 1 oder ei­nem der folgenden, dadurch gekennzeichnet, daß der Bewegungsraum (8) eine Durchtrittsöffnung (9) zum Gehäuse (10) aufweist, die der Spannhebel (21) durchgreift, wozu dieser Spannhebel (21) werk­stückseitig hakenförmig ausgebildet und seine Spannbewegung der Kolbenstangenbewegung entgegen­gerichtet ist.4. toggle lever clamping device according to claim 1 or one of the following, characterized in that the movement space (8) has a passage opening (9) to the housing (10) through which the clamping lever (21) passes, for which purpose this clamping lever (21) is hook-shaped on the workpiece and its tensioning movement is opposite to the piston rod movement. 5. Kniehebelspannvorrichtung nach Anspruch 1 oder ei­nem der folgenden, dadurch gekennzeichnet, daß eine Lasche (12) der Kniehebelgelenkanordnung (11) über eine parallel zum Kolbenstangenbolzen (13) verlau­fende ortsunbewegliche Kniehebelgelenkachse (18) mit der Schwinge (19) um eine gehäusefeste Achse (20) schwenkbeweglich verbunden ist, deren Schwenklängsachse parallel zum Kolbenstangenbolzen (13) und zur Kniehebelgelenkachse (18) verläuft.5. toggle lever tensioning device according to claim 1 or one of the following, characterized in that a tab (12) of the toggle joint arrangement (11) via a parallel to the piston rod pin (13) extending immovable toggle joint axis (18) with the rocker (19) around a housing-fixed axis ( 20) is pivotally connected, the longitudinal pivot axis of which runs parallel to the piston rod pin (13) and the toggle joint axis (18).
EP19900120066 1989-11-17 1990-10-19 Hydraulic toggle lever device Expired - Lifetime EP0433601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893938208 DE3938208C1 (en) 1989-11-17 1989-11-17
DE3938208 1989-11-17

Publications (3)

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EP0433601A2 true EP0433601A2 (en) 1991-06-26
EP0433601A3 EP0433601A3 (en) 1992-02-26
EP0433601B1 EP0433601B1 (en) 1994-06-08

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ID=6393702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900120066 Expired - Lifetime EP0433601B1 (en) 1989-11-17 1990-10-19 Hydraulic toggle lever device

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Country Link
EP (1) EP0433601B1 (en)
DE (1) DE3938208C1 (en)
ES (1) ES2055272T3 (en)

Cited By (4)

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DE9412722U1 (en) * 1994-08-06 1994-09-29 Sta Co Mettallerzeugnisse Gmbh Toggle clamp device
EP0778107A1 (en) * 1995-12-05 1997-06-11 TÜNKERS MASCHINENBAU GmbH Toggle lever clamp
CN108994128A (en) * 2018-08-01 2018-12-14 浙江金瑞五金索具有限公司 A kind of carbine bending machine
CN109227175A (en) * 2018-11-15 2019-01-18 宁波市慈力金属制品有限公司 A kind of frock clamp for hub cap facing

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DE19715452C1 (en) * 1997-04-10 1998-09-24 Mannesmann Ag Sheet clamp for edge forming machine
DE29718643U1 (en) * 1997-10-21 1997-12-11 Tuenkers Maschinenbau Gmbh Combined centering and tensioning device which can be actuated by pressure medium, in particular for use in body construction in the motor vehicle industry
DE69805497T2 (en) * 1998-02-18 2003-01-16 Capital Formation Inc Closed pneumatic clamping device
DE102004040606B3 (en) * 2004-08-21 2006-01-12 Tünkers Maschinenbau Gmbh Crank lever clamping device for vehicle bodywork components has at least one connecting rod, by which first turning axis is coupled
ITTO20080914A1 (en) * 2008-12-09 2010-06-10 Vep Automation Srl PIECE FIXING DEVICE, PARTICULARLY OF SHEETS OF SHEET
DE202011106409U1 (en) 2011-09-29 2011-11-22 Hohenstein Vorrichtungsbau Und Spannsysteme Gmbh Clamping cassette with pull-down clamp
CN102658484A (en) * 2012-04-25 2012-09-12 浙江宏源车轮有限公司 Clamp special for valve holes of tubeless wheels of engineering truck
CN106903630B (en) * 2017-04-27 2019-03-01 苏州赛腾精密电子股份有限公司 A kind of parallel clamp system
CN108942030B (en) * 2018-06-23 2020-10-02 刘道灵 Pneumatic one-way tensioning pin hooking device
CN110315371B (en) * 2019-07-31 2022-01-04 中冶华天工程技术有限公司 Automatic side clamping device for steel sheet pile saw cutting
DE102020003577B3 (en) * 2020-06-16 2021-06-10 Olaf und André Tünkers GbR (vertretungsberechtigter Gesellschafter: Dipl.-Ing. Olaf Tünkers, 40883 Ratingen) Underbody tensioner with toggle joint and link guide, for use in body construction in the automotive industry

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US2995794A (en) * 1959-07-20 1961-08-15 Hacking Vernon Edward Toggle clamp
DE1752215A1 (en) * 1968-04-22 1971-05-13 Warnke Umformtech Veb K Quick clamping device for lower tools and frontally extendable sliding tables on presses
FR1568574A (en) * 1968-05-31 1969-05-23
US3565415A (en) * 1968-07-05 1971-02-23 Leland F Blatt Power-operated bar clamp
US3545050A (en) * 1969-01-30 1970-12-08 I S I Mfg Inc Power clamp with pull-back action
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412722U1 (en) * 1994-08-06 1994-09-29 Sta Co Mettallerzeugnisse Gmbh Toggle clamp device
EP0778107A1 (en) * 1995-12-05 1997-06-11 TÜNKERS MASCHINENBAU GmbH Toggle lever clamp
CN108994128A (en) * 2018-08-01 2018-12-14 浙江金瑞五金索具有限公司 A kind of carbine bending machine
CN109227175A (en) * 2018-11-15 2019-01-18 宁波市慈力金属制品有限公司 A kind of frock clamp for hub cap facing

Also Published As

Publication number Publication date
ES2055272T3 (en) 1994-08-16
DE3938208C1 (en) 1990-11-22
EP0433601B1 (en) 1994-06-08
EP0433601A3 (en) 1992-02-26

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