EP1187702B1 - Eccentric clamp clip - Google Patents

Eccentric clamp clip Download PDF

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Publication number
EP1187702B1
EP1187702B1 EP00938636A EP00938636A EP1187702B1 EP 1187702 B1 EP1187702 B1 EP 1187702B1 EP 00938636 A EP00938636 A EP 00938636A EP 00938636 A EP00938636 A EP 00938636A EP 1187702 B1 EP1187702 B1 EP 1187702B1
Authority
EP
European Patent Office
Prior art keywords
clamping jaw
clamp clip
slide bar
arm
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00938636A
Other languages
German (de)
French (fr)
Other versions
EP1187702A2 (en
Inventor
Klemens Degen
Zbigniew Noniweicz
Theo Gasper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolfcraft GmbH
Original Assignee
Wolfcraft GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE29909191U external-priority patent/DE29909191U1/en
Application filed by Wolfcraft GmbH filed Critical Wolfcraft GmbH
Publication of EP1187702A2 publication Critical patent/EP1187702A2/en
Application granted granted Critical
Publication of EP1187702B1 publication Critical patent/EP1187702B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/06Arrangements for positively actuating jaws
    • B25B5/08Arrangements for positively actuating jaws using cams
    • B25B5/085Arrangements for positively actuating jaws using cams with at least one jaw sliding along a bar
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/16Details, e.g. jaws, jaw attachments
    • B25B5/163Jaws or jaw attachments

Definitions

  • the invention relates to a clamp according to the preamble of the claim 1.
  • Such a clamp is described by FR 555 333.
  • There is one first jaw can be moved along the direction of extension of a slide rail.
  • the slide rail has a toothing in which a toothed Holding means of the carrier of the first clamping jaw can engage.
  • a second clamping jaw In opposition to the first clamping jaw there is a second clamping jaw, which one second jaw holder is assigned.
  • This second jaw holder can also be moved along the slide towards its center line become.
  • To move the second jaw holder use one at the end the slide rail, a pressure body rotatable about an axis of rotation, which has an eccentric surface which acts on a pressure shoulder.
  • a clamp with a slide rail which a first jaw holder is slidably disposed.
  • a trapezoidal shell is located at the end of the slide rail.
  • the invention has for its object a simple means Generic clamp to improve use advantageous.
  • the object is achieved by the invention specified in claim 1.
  • the Subclaims represent advantageous developments Eccentric surface preferably goes into a surface section of the operating handle via.
  • the second jaw support can be in a swivel end position by means of a spring being held. It is preferably around the swivel end position in which the first jaw facing away from the second jaw is so that the pressure shoulder is also in the non-tensioned position spring loaded against the eccentric Surface of the pressure body rests. This has, for example. as a result that the position of the operating handle at not clamped workpiece between the two jaws held frictionally in any pivot position becomes.
  • the second jaw is preferably swiveling on the second jaw holder.
  • the surface of the second clamping jaw can thus adapt to the surface conditions adapt the workpiece to be clamped.
  • this pivotability means that when clamping rotation of the eccentric shifted Jaw holder balanced about its axis.
  • the second jaw support forms an acetabular cup.
  • this socket there is a pivot pin of the second jaw.
  • the pivot pin is preferably clipped in there.
  • Kinematic advantages result from the fact that Swivel axis of the jaw holder off-center of the Longitudinal axis of the slide rail lies. The axis lies doing so on the side facing away from the clamping jaw Center line of the slide rail.
  • the slide rail has preferably a rectangular cross section and is made of Made of steel.
  • the pivot axis of the eccentric Pressure body is preferably also off-center the longitudinal median plane of the slide rail. This axis lies on the other side, namely on the Clamping jaw facing side.
  • the slope of the spiral-shaped clamping surface is geometrically known as Angle lever tuned to designated clamping arm.
  • the pressure body latches in against the clamping position can be brought.
  • the pressure body or the actuating handle emanating from it is a locking element assigned. This engages with its locking teeth in a counter detent arranged on the slide rail.
  • This counter detent can preferably be cylindrical Be formed body, the outer surface of recesses formed.
  • the locking cylinder is preferably from one end of the slide rail.
  • the locking link can be released into a release position using a release lever to be brought.
  • Both locking element are preferably located as well as release lever in a U-shaped cavity of the handle made of plastic.
  • Both locking element, as well as locking levers can be used as plastic parts be formed and are each about separate axes of rotation pivotable.
  • the locking member is preferably multi-armed educated.
  • One arm forms the axis of rotation. Another The arm forms the locking teeth. Another arm can be used with the Interact with the return spring. Finally, one fourth arm can be provided, on which the unlocking lever acts.
  • the unlocking lever can have two arms his. The release arm of the locking member can be in one Insert the fork jaw of the release lever. If the cylindrical Locking body fully encased in the pressure body lies, the device has a pleasing appearance.
  • the slide rail 1 made of steel has one rectangular cross-section and a dash-dotted line Longitudinal center line.
  • a first jaw support 2 slidably mounted on the slide rail 1 .
  • the jaw holder 2 has a first jaw 3, which is laterally spaced from the slide rail 1 lies. If a moment is exerted on the clamping jaw 3, so the jaw holder 2 is tilted on the slide rail 1 and is stuck there.
  • the slide rail can be grooved on one or both sides.
  • a second jaw 5 Opposite to jaw 3 is a second jaw 5 provided.
  • the jaw 5 is just like that Clamping jaw carrier 2 and the jaws carried by him 3 made of plastic.
  • the clamping jaw 5 forms a pivot pin 11 from which the clamping jaw 5 is formed is.
  • the pivot pin 11 is in a socket 10 clipped in, also made of plastic manufactured second jaw carrier 4 formed is.
  • the second jaw holder 4 is about an axis 13 pivotally fixed to the slide rail 1.
  • the axis 13 is formed by a steel pin, which by an eccentric bore of the slide rail 1 protrudes.
  • the The bore lies on the jaw 5 facing away Side of the slide rail 1.
  • the eccentric pressure body 6 is also made of plastic manufactured and forms a spiral to the axis of rotation 12 running pressure surface 6 ', which has no jump points into a surface 8 'of the pressure body 6 molded actuating handle 8 passes.
  • a locking cylinder 14 arranged at the end of the slide rail 1, at which the pressure body 6 is mounted.
  • This locking cylinder 14 can by means of Pin 12 be attached to the end of the slide rail 1.
  • Locking teeth 20 engage in the recesses a locking member 15 a.
  • the locking member 15 is by means of an axis of rotation 17 on the operating handle 8 attached. It sits just like one Unlocking lever 16 in a U-shaped cavity in the handle 8.
  • the locking member 25 forms a total of four arms.
  • On Arm forms the pivot bearing 17.
  • a second arm forms the Detent teeth 20.
  • An arm opposite the arm forming the detent teeth Arm 21 is a release arm. It can be from one Pressure arm 22 of the unlocking lever 16 are applied and lies in a fork mouth, which from the pressure arm 22 and a second arm 25 of the release lever 16 are formed is.
  • Spring arm 19 is by means of a compression spring 18 in Locking direction in relation to the housing of the operating handle 8 cushioned.
  • the unlocking lever 16 has two arms. One arm forms said pressure arm 22 from. The stretched one opposite, longer arm forms an actuating arm 23 from the area of the U opening of the Actuating handle 8 protrudes.
  • the operating arm 23 is with a compression spring 25 opposite the U-web Cavity of the handle 8 cushioned.
  • the intended one Compression spring 25 lies in a corresponding spring receiving chamber of the operating handle 8 a.
  • Two webs 16 run in the longitudinal direction of the handle Handle are molded. These serve as a guide for Actuating arm 23 of the release lever 16.
  • the sliding jaw holder has Locking with the teeth of the slide rail 1 one Locking pin that fits into the plastic jaw is let in.
  • an abutment pin 26 with which the clamping jaw 2 on the opposite side of the toothing Can support rail 1.
  • the teeth of the dental pen are exerted on the clamping jaw by applying a torque 3 pressed into the toothing.
  • the counter torque is picked up by pin 26.
  • the functionality of the eccentric clamp is the following.
  • a workpiece, not shown, is between the jaws 3 and 5 are pre-clamped in such a way that the sliding jaw holder 2 against pushed the fixed but pivotable jaw holder 4 until the workpiece is clamped between the clamping jaw 3 and 5 lies.
  • the pressure hull takes off 6 such a rotational position that the radial smallest section of the eccentric surface 6 'on the Pressure shoulder 7 lies.
  • the pressure body 6 by attacking the operating handle 8 about its axis 12 pivoted, the radially larger sections of the Eccentric surface 6 'against the pressure shoulder 7 and pivot the jaw support 4 in the direction of the workpiece, so that the pressure with which the clamping jaw 5 acts on the workpiece, enlarged. Doing so the spring 9 tensioned.
  • the jaw holder 4 forms technically an angle lever.
  • the lever rotation axis is by the mounting pin 13 formed.
  • the one lever arm ends at the jaw 5 and the at an acute angle
  • the second lever arm protrudes from the pressure shoulder 7 trained.
  • the pressure shoulder 7 crosses the dash-dotted longitudinal median plane of the slide rail 1 in at an acute angle. But this angle is more obtuse, than the angle between the pressure point of the eccentric surface 6 'on the pressure shoulder 7 and the axis 13 with the Longitudinal center plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Description

Die Erfindung betrifft eine Spannzwinge gemäß Gattungsbegriff des Anspruches 1.The invention relates to a clamp according to the preamble of the claim 1.

Eine derartige Spannzwinge wird von der FR 555 333 beschrieben. Dort ist eine erste Spannbacke entlang der Erstreckungsrichtung einer Gleitschiene verschieblich. Die Gleitschiene weist eine Verzahnung auf, in welche ein verzahntes Haltemittel des Trägers der ersten Spannbacke eingreifen kann. In Opposition zur ersten Spannbacke befindet sich eine zweite Spannbacke, die einem zweiten Spannbackenträger zugeordnet ist. Dieser zweite Spannbackenträger kann ebenfalls entlang der Gleitschiene in Richtung ihrer Mittellinie verlagert werden. Zur Verlagerung des zweiten Spannbackenträgers dient ein am Ende der Gleitschiene um eine Drehachse drehbarer Druckkörper, der eine Exzenterfläche aufweist, die auf eine Druckschulter wirkt.Such a clamp is described by FR 555 333. There is one first jaw can be moved along the direction of extension of a slide rail. The slide rail has a toothing in which a toothed Holding means of the carrier of the first clamping jaw can engage. In opposition to the first clamping jaw there is a second clamping jaw, which one second jaw holder is assigned. This second jaw holder can also be moved along the slide towards its center line become. To move the second jaw holder, use one at the end the slide rail, a pressure body rotatable about an axis of rotation, which has an eccentric surface which acts on a pressure shoulder.

Aus der GB 782 623 ist eine Spannzwinge mit einer Gleitschiene bekannt, an welcher ein erster Spannbackenträger gleitverschieblich angeordnet ist. Am Ende der Gleitschiene befindet sich eine trapezförmige Hülle. Dort ist auch ein als Kipphebel gestalteter zweiter Spannbackenträger schwenkgelagert. Gegen eine Druckschulter desselben wirkt ein Exzenter. Dieser ist um eine Achse schwenkbar, die fest an einem Ausleger befestigt ist.From GB 782 623 a clamp with a slide rail is known which a first jaw holder is slidably disposed. At the A trapezoidal shell is located at the end of the slide rail. There is also one second clamping jaw carrier designed as a rocker arm pivoted. Against a pressure shoulder of the same acts as an eccentric. This is around an axis swiveling, which is firmly attached to a boom.

Der Erfindung liegt die Aufgabe zugrunde, mit einfachen Mitteln eine gattungsgemäße Spannzwinge gebrauchsvorteilhaft zu verbessern. The invention has for its object a simple means Generic clamp to improve use advantageous.

Gelöst wird die Aufgabe durch die im Anspruch 1 angegebene Erfindung. Die Unteransprüche stellen vorteilhafte Weiterbildungen dar. Die Exzenterfläche geht vorzugsweise in einen Flächenabschnitt des Betätigungsgriffs über. Der zweite Spannbakkenträger kann mittels einer Feder in einer Schwenkendstellung gehalten werden. Es handelt sich dabei vorzugsweise um diejenige Schwenkendstellung, in welcher die erste Spannbacke von der zweiten Spannbacke weggerichtet ist, so daß die Druckschulter auch in der Nichtspannstellung federkraftbeaufschlagt gegen die exzentrische Fläche des Druckkörpers anliegt. Dies hat bspw. zur Folge, daß die Lage des Betätigungsgriffs bei nicht eingespanntem Werkstück zwischen den beiden Spannbacken reibschlüssig in beliebiger Schwenkstellung gehalten wird. Die zweite Spannbacke sitzt vorzugsweise schwenkbar am zweiten Spannbackenträger. Die Oberfläche der zweiten Spannbacke kann sich damit den Oberflächengegebenheiten des einzuspannenden Werkstückes anpassen. Zudem wird durch diese Schwenkbarkeit die beim Spannen im Wege der Exzenterverlagerung ausgeübte Drehung des Spannbackenträgers um seine Achse ausgeglichen. In einer bevorzugten Ausgestalung bildet der zweite Spannbackenträger eine Gelenkpfanne aus. In dieser Gelenkpfanne sitzt ein Gelenkzapfen der zweiten Spannbacke. Der Gelenkzapfen ist dort vorzugsweise eingeklipst. Kinematische Vorteile ergeben sich dadurch, daß die Schwenkachse des Spannbackenträgers außermittig der Längsachse der Gleitschiene liegt. Die Achse liegt dabei auf der der Spannbacke abgewandten Seite der Mittellinie der Gleitschiene. Die Gleitschiene hat vorzugsweise einen rechteckigen Querschnitt und ist aus Stahl gefertigt. Die Schwenkachse des exzentrischen Druckkörpers liegt vorzugsweise ebenfalls außermittig der Längsmittelebene der Gleitschiene. Diese Achse liegt jedoch auf der anderen Seite, nämlich auf der der Spannbacke zugewandten Seite.The object is achieved by the invention specified in claim 1. The Subclaims represent advantageous developments Eccentric surface preferably goes into a surface section of the operating handle via. The second jaw support can be in a swivel end position by means of a spring being held. It is preferably around the swivel end position in which the first jaw facing away from the second jaw is so that the pressure shoulder is also in the non-tensioned position spring loaded against the eccentric Surface of the pressure body rests. This has, for example. as a result that the position of the operating handle at not clamped workpiece between the two jaws held frictionally in any pivot position becomes. The second jaw is preferably swiveling on the second jaw holder. The surface of the second clamping jaw can thus adapt to the surface conditions adapt the workpiece to be clamped. In addition, this pivotability means that when clamping rotation of the eccentric shifted Jaw holder balanced about its axis. In In a preferred embodiment, the second jaw support forms an acetabular cup. In this socket there is a pivot pin of the second jaw. The pivot pin is preferably clipped in there. Kinematic advantages result from the fact that Swivel axis of the jaw holder off-center of the Longitudinal axis of the slide rail lies. The axis lies doing so on the side facing away from the clamping jaw Center line of the slide rail. The slide rail has preferably a rectangular cross section and is made of Made of steel. The pivot axis of the eccentric Pressure body is preferably also off-center the longitudinal median plane of the slide rail. This axis lies on the other side, namely on the Clamping jaw facing side.

Durch die Anlenkung des Spannbackenträgers an der Schiene und die Anordnung des exzentrischen Druckkörpers in Schienenverlängerungsrichtung dazu sind spanntechnisch verbesserte Hebelverhältnisse gegeben. Die Steigung der spiralförmigen Spannfläche ist auf den geometrisch als Winkelhebel zu bezeichnenden Spannarm abgestimmt.Through the articulation of the jaw holder on the rail and the arrangement of the eccentric pressure body in Rail extension direction for this are clamping technology improved leverage. The slope of the spiral-shaped clamping surface is geometrically known as Angle lever tuned to designated clamping arm.

In einer Weiterbildung der Erfindung ist vorgesehen, daß der Druckkörper gegen Rückverlagerung verrastet in die Spannstellung bringbar ist. Dem Druckkörper bzw. dem von ihm ausgehenden Betätigungsgriff ist ein Rastglied zugeordnet. Dieses greift mit seinen Rastzähnen in eine an der Gleitschiene angeordnete Gegenrast. Diese Gegenrast kann bevorzugt von einem zylindrischen Körper ausgebildet sein, dessen Mantelfläche Rastnischen ausbildet. Der Rastzylinder wird vorzugweise von einem Ende der Gleitschiene getragen. Das Rastglied kann mittels eines Entrasthebels in eine Lösestellung gebracht werden. Vorzugsweise liegen sowohl Rastglied als auch Entrasthebel in einer U-förmigen Höhlung des aus Kunststoff gefertigten Griffs ein. Sowohl Rastglied, als auch Rasthebel können als Kunststoffteile ausgebildet sein und sind jeweils um gesonderte Drehachsen schwenkbar. Das Rastglied ist bevorzugt mehrarmig ausgebildet. Ein Arm bildet die Drehachse. Ein anderer Arm bildet die Rastzähne. Ein weiterer Arm kann mit der Rückdrückfeder zusammenwirken. Schließlich kann ein vierter Arm vorgesehen sein, auf welchen der Entrasthebel wirkt. Der Entrasthebel kann zweiarmig ausgebildet sein. Der Lösearm des Rastgliedes kann in einem Gabelmaul des Entrasthebels einliegen. Wenn der zylinderförmige Rastkörper vollständig ummantelt im Druckkörper liegt, besitzt die Vorrichtung ein gefälliges Aussehen.In a further development of the invention, that the pressure body latches in against the clamping position can be brought. The pressure body or the actuating handle emanating from it is a locking element assigned. This engages with its locking teeth in a counter detent arranged on the slide rail. This counter detent can preferably be cylindrical Be formed body, the outer surface of recesses formed. The locking cylinder is preferably from one end of the slide rail. The locking link can be released into a release position using a release lever to be brought. Both locking element are preferably located as well as release lever in a U-shaped cavity of the handle made of plastic. Both locking element, as well as locking levers can be used as plastic parts be formed and are each about separate axes of rotation pivotable. The locking member is preferably multi-armed educated. One arm forms the axis of rotation. Another The arm forms the locking teeth. Another arm can be used with the Interact with the return spring. Finally, one fourth arm can be provided, on which the unlocking lever acts. The unlocking lever can have two arms his. The release arm of the locking member can be in one Insert the fork jaw of the release lever. If the cylindrical Locking body fully encased in the pressure body lies, the device has a pleasing appearance.

Ausführungsbeispiele der Erfindung werden anhand beigefügter Zeichnungen nachfolgend erläutert. Es zeigen:

Fig. 1
die Exzenterspannzwinge in der Seitenansicht;
Fig. 2
die Exzenterspannzwinge in einer um 90° gewendeten Darstellung;
Fig. 3
ein zweites Ausführungsbeispiel der Erfindung in einer Darstellung gemäß Fig. 1;
Fig. 4
eine vergrößerte Darstellung des Rastmechanismus im Betätigungsgriff in der Raststellung;
Fig. 5
eine Darstellung gemäß Fig. 4 in der Lösestellung und
Fig. 6
einen Schnitt gemäß der Linie VI-VI in Fig. 4.
Embodiments of the invention are explained below with reference to the accompanying drawings. Show it:
Fig. 1
the eccentric clamp in side view;
Fig. 2
the eccentric clamp in a view turned by 90 °;
Fig. 3
a second embodiment of the invention in a representation of FIG. 1;
Fig. 4
an enlarged view of the locking mechanism in the operating handle in the locking position;
Fig. 5
4 in the release position and
Fig. 6
a section along the line VI-VI in Fig. 4th

Die aus Stahl gefertigte Gleitschiene 1 besitzt einen rechteckigen Querschnitt und eine strichpunktiert angedeutete Längsmittellinie. Auf der Gleitschiene 1 ist ein erster Spannbackenträger 2 verschieblich gelagert. Der Spannbackenträger 2 besitzt eine erste Spannbacke 3, welche seitlich beabstandet zur Gleitschiene 1 liegt. Wird auf die Spannbacke 3 ein Moment ausgeübt, so verkantet sich der Spannbackenträger 2 an der Gleitschiene 1 und sitzt dort fest. Die Gleitschiene kann dazu einseitig oder beidseitig geriffelt sein. The slide rail 1 made of steel has one rectangular cross-section and a dash-dotted line Longitudinal center line. On the slide rail 1 is a first jaw support 2 slidably mounted. The jaw holder 2 has a first jaw 3, which is laterally spaced from the slide rail 1 lies. If a moment is exerted on the clamping jaw 3, so the jaw holder 2 is tilted on the slide rail 1 and is stuck there. The slide rail can be grooved on one or both sides.

Gegenüberliegend zur Spannbacke 3 ist eine zweite Spannbacke 5 vorgesehen. Die Spannbacke 5 ist ebenso wie der Spannbackenträger 2 und die von ihm getragene Spannbakke 3 aus Kunststoff gefertigt. Die Spannbacke 5 bildet einen Gelenkzapfen 11 aus, der der Spannbacke 5 angeformt ist. Der Gelenkzapfen 11 ist in einer Gelenkpfanne 10 eingeklipst, die von einem ebenfalls aus Kunststoff gefertigten zweiten Spannbackenträger 4 ausgebildet ist.Opposite to jaw 3 is a second jaw 5 provided. The jaw 5 is just like that Clamping jaw carrier 2 and the jaws carried by him 3 made of plastic. The clamping jaw 5 forms a pivot pin 11 from which the clamping jaw 5 is formed is. The pivot pin 11 is in a socket 10 clipped in, also made of plastic manufactured second jaw carrier 4 formed is.

Der zweite Spannbackenträger 4 ist um eine Achse 13 schwenkbar fest an der Gleitschiene 1 befestigt. Hierzu bildet der Spannbackenträger 4 ebenso wie der Spannbakkenträger 2 einen Schacht aus, durch welchen die Gleitschiene 1 ragt. Dieser Schacht umgibt die Gleitschiene 1 mit soviel Spiel, daß der Spannbackenträger 4 um die Schwenkachse 13 verschwenkt werden kann. Die Achse 13 wird von einem Stahlstift ausgebildet, welcher durch eine außermittige Bohrung der Gleitschiene 1 ragt. Die Bohrung liegt dabei auf der der Spannbacke 5 abgewandten Seite der Gleitschiene 1.The second jaw holder 4 is about an axis 13 pivotally fixed to the slide rail 1. For this forms the jaw support 4 as well as the jaw support 2 a shaft through which the slide rail 1 protrudes. This shaft surrounds the slide rail 1 with so much play that the jaw support 4 around the Pivot axis 13 can be pivoted. The axis 13 is formed by a steel pin, which by an eccentric bore of the slide rail 1 protrudes. The The bore lies on the jaw 5 facing away Side of the slide rail 1.

Während die Achse 13 etwa auf Höhe der Spannbacke 5 liegt, liegt eine die Gleitschiene 1 schräg kreuzende Druckschulter 7 auf der anderen Seite des Schachtes und bildet die Öffnung des Schachtes.While the axis 13 is approximately at the level of the clamping jaw 5 lies, one is crossing the slide rail 1 at an angle Pressure shoulder 7 on the other side of the shaft and forms the opening of the shaft.

Am Ende der Gleitschiene 1 befindet sich ebenfalls eine außermittige Bohrung. Letztere liegt aber auf der der Spannbacke 5 zugewandten Seite der Mittellinie der Gleitschiene 1. Durch diese Bohrung ist ein Zapfen 12 hindurchgesteckt. Mit diesem Zapfen 12 wird die Drehachse ausgebildet für einen exzentrischen Druckkörper 6. At the end of the slide rail 1 there is also one off-center hole. The latter lies on the Clamping jaw 5 facing the center line of the Slide rail 1. Through this hole is a pin 12 through put. With this pin 12 is the axis of rotation designed for an eccentric pressure body 6.

Der exzentrische Druckkörper 6 ist ebenfalls aus Kunststoff gefertigt und bildet eine spiralförmig zur Drehachse 12 verlaufende Druckfläche 6' aus, welche sprungstellenfrei in eine Fläche 8' eines dem Druckkörper 6 angeformten Betätigungsgriffes 8 übergeht.The eccentric pressure body 6 is also made of plastic manufactured and forms a spiral to the axis of rotation 12 running pressure surface 6 ', which has no jump points into a surface 8 'of the pressure body 6 molded actuating handle 8 passes.

In dem Schacht, durch welchen die Gleitschiene 1 den zweiten Spannbackenträger 4 durchsetzt befindet sich noch ein Federelement 9, welches sich einerseits an der Schachtwand und andererseits an der Gleitschiene abstützt. Dieses Federelement 9 übt eine Abspreizwirkung aus, mit welcher die Spannbacke 5 entgegen der Druckrichtung des Druckkörpers 6 gegen die Exzenterfläche 6' gedrückt wird, so daß der Druckkörper 6 reibschlüssig in jeder Schwenkstellung gehalten ist.In the shaft through which the slide rail 1 the second jaw holder 4 is located still a spring element 9, which on the one hand on the Shaft wall and on the other hand supported on the slide rail. This spring element 9 exerts a spreading effect with which the jaw 5 against the pressure direction of the pressure body 6 against the eccentric surface 6 ' is pressed so that the pressure body 6 friction is held in any pivot position.

Bei dem in den Figuren 3 bis 6 dargestellten Ausführungsbeispiel kann die Stellung des Betätigungsgriffes 8 bzw. die Stellung des Druckkörpers 6 in bezug auf die Druckschulter 7 durch Verrastung festgelegt werden. Hierzu ist an dem Ende der Gleitschiene 1, an welchem der Druckkörper 6 gelagert ist, ein Rastzylinder 14 angeordnet. Dieser Rastzylinder 14 kann mittels des Zapfens 12 am Ende der Gleitschiene 1 befestigt sein. Auf der Zylindermantelfläche des Rastzylinders 14 befinden sich in Achsrichtung des Zylinders verlaufende Rastnischen. In die Rastnischen greifen Rastzähne 20 eine Rastgliedes 15 ein.In the embodiment shown in Figures 3 to 6 can the position of the operating handle 8 or the position of the pressure body 6 with respect to the Pressure shoulder 7 can be fixed by locking. For this purpose, at the end of the slide rail 1, at which the pressure body 6 is mounted, a locking cylinder 14 arranged. This locking cylinder 14 can by means of Pin 12 be attached to the end of the slide rail 1. Located on the cylindrical surface of the locking cylinder 14 extending in the axial direction of the cylinder Rest niches. Locking teeth 20 engage in the recesses a locking member 15 a.

Das Rastglied 15 ist mittels eine Drehachse 17 am Betätigungsgriff 8 befestigt. Es sitzt ebenso wie ein Entrasthebel 16 in einer U-förmigen Höhlung des Griffes 8. Das Rastglied 25 bildet insgesamt vier Arme aus. Ein Arm bildet das Drehlager 17. Ein zweiter Arm bildet die Rastzähne 20. Ein dem die Rastzähne bildenden Arm gegenüberliegender Arm 21 ist ein Lösearm. Er kann von einem Druckarm 22 des Entrasthebels 16 beaufschlagt werden und liegt in einem Gabelmaul, welches von dem Druckarm 22 und einem zweiten Arm 25 des Entrasthebels 16 gebildet ist.The locking member 15 is by means of an axis of rotation 17 on the operating handle 8 attached. It sits just like one Unlocking lever 16 in a U-shaped cavity in the handle 8. The locking member 25 forms a total of four arms. On Arm forms the pivot bearing 17. A second arm forms the Detent teeth 20. An arm opposite the arm forming the detent teeth Arm 21 is a release arm. It can be from one Pressure arm 22 of the unlocking lever 16 are applied and lies in a fork mouth, which from the pressure arm 22 and a second arm 25 of the release lever 16 are formed is.

Ein dem die Drehachse 17 tragenden Arm gegenüberliegender Federarm 19 ist mittels einer Druckfeder 18 in Rastrichtung gegenüber dem Gehäuse des Betätigungsgriffes 8 abgefedert.One opposite the arm supporting the axis of rotation 17 Spring arm 19 is by means of a compression spring 18 in Locking direction in relation to the housing of the operating handle 8 cushioned.

Der Entrasthebel 16 ist zweiarmig. Der eine Arm bildet den besagten Druckarm 22 aus. Der in Gestrecktlage gegenüberliegende, längere Arm bildet einen Betätigungsarm 23 aus, der bereichsweise aus der U-Öffnung des Betätigungsgriffes 8 herausragt. Der Betätigungsarm 23 ist mit zu einer Druckfeder 25 gegenüber dem U-Steg der Höhlung des Griffes 8 abgefedert. Die hierzu vorgesehene Druckfeder 25 liegt in einer entsprechenden Federaufnahmekammer des Betätigungsgriffes 8 ein.The unlocking lever 16 has two arms. One arm forms said pressure arm 22 from. The stretched one opposite, longer arm forms an actuating arm 23 from the area of the U opening of the Actuating handle 8 protrudes. The operating arm 23 is with a compression spring 25 opposite the U-web Cavity of the handle 8 cushioned. The intended one Compression spring 25 lies in a corresponding spring receiving chamber of the operating handle 8 a.

In Grifflängsrichtung verlaufen zwei Stege 16, die dem Griff angespritzt sind. Diese dienen als Führung des Betätigungsarmes 23 des Entrasthebels 16.Two webs 16 run in the longitudinal direction of the handle Handle are molded. These serve as a guide for Actuating arm 23 of the release lever 16.

Der verschiebliche Spannbackenträger besitzt zur Verrastung mit der Zahnung der Gleitschiene 1 einen Raststift, der in die aus Kunststoff bestehende Spannbacke eingelassen ist. In axialversetzter Gegenüberlage zu diesem Zahnstift 27 trägt der Spannbackenträger 2 einen Widerlagerstift 26, mit dem sich die Spannbacke 2 auf der der Verzahnung gegenüberliegenden Seite der Schiene 1 abstützen kann. Die Zähne des Zahnstiftes werden durch Ausübung eines Drehmomentes auf die Spannbacke 3 in die Verzahnung gedrückt. Das Gegendrehmoment wird vom Stift 26 aufgenommen.The sliding jaw holder has Locking with the teeth of the slide rail 1 one Locking pin that fits into the plastic jaw is let in. In an axially offset opposite the jaw holder 2 carries this tooth pin 27 an abutment pin 26 with which the clamping jaw 2 on the opposite side of the toothing Can support rail 1. The teeth of the dental pen are exerted on the clamping jaw by applying a torque 3 pressed into the toothing. The counter torque is picked up by pin 26.

Die Funktionsweise der Exzenterspannzwinge ist die folgende. Ein nicht dargestelltes Werkstück wird zwischen die Spannbacken 3 und 5 derart voreingespannt, daß der verschiebliche Spannbackenträger 2 soweit gegen den festen aber schwenkbaren Spannbackenträger 4 geschoben wird, bis das Werkstück in Klemmlage zwischen Spannbacke 3 und 5 liegt. In dieser Stellung nimmt der Druckkörper 6 eine derartige Drehstellung ein, daß der radial kleinste Abschnitt der Exzenterfläche 6' auf der Druckschulter 7 liegt. Wird jetzt der Druckkörper 6 durch Angriff am Betätigungsgriff 8 um seine Achse 12 geschwenkt, treten die radial größeren Abschnitte der Exzenterfläche 6' gegen die Druckschulter 7 und verschwenken den Spannbackenträger 4 in Richtung des Werkstückes, so daß sich der Druck, mit welchem die Spannbacke 5 auf das Werkstück wirkt, vergrößert. Dabei wird die Feder 9 gespannt.The functionality of the eccentric clamp is the following. A workpiece, not shown, is between the jaws 3 and 5 are pre-clamped in such a way that the sliding jaw holder 2 against pushed the fixed but pivotable jaw holder 4 until the workpiece is clamped between the clamping jaw 3 and 5 lies. In this position the pressure hull takes off 6 such a rotational position that the radial smallest section of the eccentric surface 6 'on the Pressure shoulder 7 lies. Now the pressure body 6 by attacking the operating handle 8 about its axis 12 pivoted, the radially larger sections of the Eccentric surface 6 'against the pressure shoulder 7 and pivot the jaw support 4 in the direction of the workpiece, so that the pressure with which the clamping jaw 5 acts on the workpiece, enlarged. Doing so the spring 9 tensioned.

Der Spannbackenträger 4 bildet insgesamt technisch einen Winkelhebel aus. Die Hebeldrehachse wird durch den Befestigungszapfen 13 ausgebildet. Der eine Hebelarm endet an der Spannbacke 5 und der in spitzem Winkel dazu abragende zweite Hebelarm wird von der Druckschulter 7 ausgebildet. Die Druckschulter 7 kreuzt die strichpunktierte Längsmittelebene der Gleitschiene 1 in einem spitzen Winkel. Dieser Winkel ist aber stumpfer, als der Winkel zwischen dem Druckpunkt der Exzenterfläche 6' auf der Druckschulter 7 und der Achse 13 mit der Längsmittelebene.Overall, the jaw holder 4 forms technically an angle lever. The lever rotation axis is by the mounting pin 13 formed. The one lever arm ends at the jaw 5 and the at an acute angle The second lever arm protrudes from the pressure shoulder 7 trained. The pressure shoulder 7 crosses the dash-dotted longitudinal median plane of the slide rail 1 in at an acute angle. But this angle is more obtuse, than the angle between the pressure point of the eccentric surface 6 'on the pressure shoulder 7 and the axis 13 with the Longitudinal center plane.

Bei dem in den Figuren 3 bis 6 dargestellten Ausführungsbeispiel kann der Betätigungsgriff in seinen Schwenkstellungen in Spannrichtung verrasten. Hierzu greifen die oben beschriebenen Rastzähne 20 in die Rastnischen des Rastkörpers 40 ein. Die Kraft der Druckfeder 18 sorgt für den notwendigen Andruck. Wird der Entrasthebel 16 betätigt, also der Betätigungsarm 23 in die U-förmige Höhlung eingeschwenkt, so drückt der Druckarm 23 auf den Lösearm 21, so daß die Zähne 20 außer Eingriff zu den Rastnischen gebracht werden. Dann kann der Betätigungsarm in der zuvor beschriebenen Weise in beiden Schwenkrichtungen geschwenkt werden. Damit ist ein Lösen der Spannbacke 5 vom Werkstück möglich.In the embodiment shown in Figures 3 to 6 can the operating handle in its Lock the swivel positions in the clamping direction. For this engage the locking teeth 20 described in the Locking niches of the locking body 40 a. The force of the compression spring 18 provides the necessary pressure. Will the Unlocking lever 16 actuated, that is, the actuating arm 23 in the U-shaped cavity swung in, so pushes Pressure arm 23 on the release arm 21 so that the teeth 20th brought out of engagement to the rest niches. Then can the actuating arm in the previously described Be pivoted in both directions. This is a release of the jaw 5 from the workpiece possible.

Claims (10)

  1. A clamp clip having a slide bar (1) which extends in the direction of its longitudinal center line, and having a first clamping jaw carrier (2), which can be displaced along the slide bar (1) and can be fixed thereon by applying a tilting moment, said first clamping jaw carrier having a first clamping jaw (3), at least certain regions of which are at a spacing from the slide bar (1), and the clamp clip having a second clamping jaw carrier (4), which is located in the region of one end of the slide bar, said second clamping jaw carrier having a second clamping jaw (5), which is located opposite the first clamping jaw (3) and which is displaced towards the first clamping jaw (3) when the clamping jaw carrier is impinged upon by a pivotably mounted eccentric pressure element (6), located at the end of the slide bar, characterized in that the eccentric pressure element (6) acts on a pressure shoulder (7) of the second clamping jaw carrier (4) crossing the slide bar (1) obliquely to the longitudinal center line of the bar, the said second clamping jaw carrier being pivotable about a mounting axis (13) located between the pressure element (6) and the first clamping jaw carrier (2).
  2. Clamp clip as claimed in claim 1, characterized in that the eccentric surface (6') of the pressure element (6) merges substantially smoothly into a surface (8') associated with an operating handle (8).
  3. Clamp clip as claimed in one of the preceding claims, characterized in that the second clamping jaw carrier (4) is pressed by means of a spring (9) into a pivoted end position facing away from the first clamping jaw.
  4. Clamp clip as claimed in one of the preceding claims, characterized in that the second clamping jaw (5) is located pivotably on the second clamping jaw carrier (4) and the second clamping jaw carrier (4) forms a pivot socket (10) for a pivot bearing (11) of the second clamping jaw (5), the second clamping jaw (5) being clipped into the pivot socket (10) by the pivot bearing (11).
  5. Clamp clip as claimed in one of the preceding claims, characterized in that the pivot axis (13), defined in particular by a pin, of the second clamping jaw carrier lies off-center on the side of the slide bar (1) facing away from the clamping jaw (5), and the pivot axis (12), defined in particular by a steel pin, of the eccentric pressure element (6) is likewise located off-center of the slide bar but on the other side of the longitudinal center line of the slide bar, that is the side facing toward the clamping jaw.
  6. Clamp clip as claimed in one of the preceding claims, characterized in that the pressure element (6) can be latched in pivoted positions, and in that the pressure element (6) can be brought into the clamping position in a ratcheted manner and the latching can be released by means of an unlatching lever (16) extending parallel to the lever arm.
  7. Clamp clip as claimed in Claim 6, characterized in that the latching element (14), formed in particular as a latching cylinder (14), and an unlatching lever (16) which can disengage the latching element (15) are located in a hollow of the operating handle (8).
  8. Clamp clip as claimed in Claim 7, characterized in that the hollow of the operating lever (8) forms guiding legs (26), between which the unlatching lever (16) extends.
  9. Clamp clip as claimed in one of Claims 6 to 8, characterized in that a release arm (21) of the latching element (15) held in the latched position by spring pressure (18) can be acted upon by a pressure arm (22) of the two-arm unlatching lever (16), which lies in particular in a mouth of a fork (22, 25) of the unlatching lever (16).
  10. Clamp clip as claimed in one of Claims 6 to 9, characterized in that the latching cylinder (14) is enclosed by the wall of the pressure element (6).
EP00938636A 1999-05-27 2000-05-12 Eccentric clamp clip Expired - Lifetime EP1187702B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE29909191U 1999-05-27
DE29909191U DE29909191U1 (en) 1999-05-27 1999-05-27 Eccentric clamp
DE10005634A DE10005634A1 (en) 1999-05-27 2000-02-09 Eccentric clamp
DE10005634 2000-02-09
PCT/EP2000/004294 WO2000073026A2 (en) 1999-05-27 2000-05-12 Eccentric clamp clip

Publications (2)

Publication Number Publication Date
EP1187702A2 EP1187702A2 (en) 2002-03-20
EP1187702B1 true EP1187702B1 (en) 2003-08-13

Family

ID=26004242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00938636A Expired - Lifetime EP1187702B1 (en) 1999-05-27 2000-05-12 Eccentric clamp clip

Country Status (5)

Country Link
US (1) US6648314B1 (en)
EP (1) EP1187702B1 (en)
AU (1) AU5393600A (en)
CA (1) CA2370605A1 (en)
WO (1) WO2000073026A2 (en)

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Also Published As

Publication number Publication date
WO2000073026A3 (en) 2001-05-31
US6648314B1 (en) 2003-11-18
WO2000073026A2 (en) 2000-12-07
AU5393600A (en) 2000-12-18
CA2370605A1 (en) 2000-12-07
EP1187702A2 (en) 2002-03-20

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