EP1707317B1 - Bar clamp - Google Patents

Bar clamp Download PDF

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Publication number
EP1707317B1
EP1707317B1 EP06111449A EP06111449A EP1707317B1 EP 1707317 B1 EP1707317 B1 EP 1707317B1 EP 06111449 A EP06111449 A EP 06111449A EP 06111449 A EP06111449 A EP 06111449A EP 1707317 B1 EP1707317 B1 EP 1707317B1
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EP
European Patent Office
Prior art keywords
drive lever
handle
housing
clamp according
lever
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.)
Active
Application number
EP06111449A
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German (de)
French (fr)
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EP1707317A3 (en
EP1707317A2 (en
Inventor
Zbiegniew Noniewicz
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
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Wolfcraft GmbH
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Publication date
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Publication of EP1707317A2 publication Critical patent/EP1707317A2/en
Publication of EP1707317A3 publication Critical patent/EP1707317A3/en
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Publication of EP1707317B1 publication Critical patent/EP1707317B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25GHANDLES FOR HAND IMPLEMENTS
    • B25G1/00Handle constructions
    • B25G1/10Handle constructions characterised by material or shape
    • B25G1/102Handle constructions characterised by material or shape the shape being specially adapted to facilitate handling or improve grip
    • 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
    • B25B5/068Arrangements for positively actuating jaws with at least one jaw sliding along a bar

Definitions

  • the invention relates to a clamp with a housing through which a pull / push rod engages, with one on one side of the pull / push rod fixed to the housing fixed jaw and a seated on the pull / push rod movable jaw, which of a arranged in the housing drive gear by pivoting a drive lever, which is arranged together with a housing-mounted handle on the other side of the pull / push rod on the housing, relative to the fixed jaw is displaceable, wherein the distances between the free ends of handle handle and drive lever of the Switzerland- / Push rod are about the same size and the contour lines of the technological backs of handle handle and drive lever along its extension direction are rounded convex and each run on an imaginary circular arc.
  • Such a clamp describes the US 6,676,120 B1 ,
  • the grip handle and drive lever are designed approximately the same length. The free ends are the same distance from the pull / push rod.
  • the mutually technological back handle handle and drive lever extend in the area that is encompassed by the hand of the user, so the grip zone each on a circular arc.
  • the two circular arc lines run on very different radii.
  • the circular arc line which defines the course of the back of the drive lever, runs on a circular arc whose radius corresponds to about twice the length of the drive lever.
  • the radius of the Gankkens the handle handle runs on a circular arc whose radius corresponds to about three times the length of the drive lever.
  • the user's hand must not exceed a certain size.
  • the hand width must be smaller than the distance of a projection of the end of the handle or the drive lever and a contact shoulder on the fixed side of the handle or the handle handle.
  • a one-handed clamp also shows the DE 197 31 579 ,
  • the US 5,248,068 relates to a cartridge exit device with a housing from which protrudes a handle, which is adjacent to a drive lever.
  • the mutually repellent flanks of handle and drive lever are partially rounded.
  • the invention has for its object to ergonomically improve the actuators, so the drive lever and the handle of a generic Einhandspannzwinge.
  • the features specified in claim 1 form the known clamping clamp handling technology further.
  • the handling is ergonomically favorable.
  • the mutually technological back of grip handle and drive lever are rounded convexly such that the circular arc lines form boundary lines over which the contour line does not extend radially outward over the entire grip zone.
  • the contour line runs over the entire grip zone up to the free ends of the grip handle or the drive lever in a region which is bounded by the circular arc lines radially outward. Only in the end areas of handle handle and drive lever, the contour line leaves the imaginary circular arc line. The contour line curves more strongly there. She leaves the circular arc towards her center.
  • the grip handle and the drive lever are not only rounded in the respective extension direction.
  • grip handle and drive lever are rounded but also transversely to the extension direction.
  • this rounding has a considerably greater curvature than the rounding in the extension direction.
  • Grip handle and drive lever have a similar shape. They each form spines whose curvature contour preferably lies on a circular arc line.
  • the imaginary circular arc lines have almost the same radius of curvature.
  • the radius of curvature of the handle handle that lies in the cavity of a user's hand is slightly less rounded than the back of the drive lever around which the fingers of the user's hand grip. The two backs are spaced apart so that the user's hand can grip grip handle and drive lever comfortably.
  • An arranged in front of the handle release lever is designed shorter. It has a length which is sufficiently large to encompass the release lever with the index finger. He also has a corresponding distance to the handle handle.
  • the pointing to the push / push rod end of the handle handle also forms a bead, against which the bend lies between the thumb and forefinger of the user's hand. But it is also possible to operate the vice around the other way by the drive lever is located with his back in the hollow of the user's hand and the fingers of the user's hand include the grip handle. Since the two circular arc lines have similar radii, ergonomic handling is also possible with this method of operation.
  • handle handle and drive lever are arranged in a certain symmetry to each other.
  • Grip handle and drive lever form a distance space between them.
  • a symmetry line runs through this distance space and intersects a vertex.
  • the curvature arcs are preferably laid so that they intersect approximately in the symmetry line.
  • This symmetry line runs transversely to the direction of extension of the pull / push rod.
  • the two midpoints of the lines of curvature on which the ridges of both the drive lever and the handle handle extend are in a line that extends substantially parallel to the pull / push rod.
  • the radii are in the order of the lengths of grip handle or drive lever.
  • the inner flanks of grip handle and drive lever, which assign each other, are rounded. But they are less rounded than their backs.
  • drive lever and release lever are klipszuen the drive body.
  • the drive housing forms a bearing section, which forms a stub axle on both the one and the other broad side.
  • the drive lever can be clipped.
  • the release lever is clipped in the same way over its assigned stub axle.
  • the lever forms a slot. Within the slot is an area that forms two opposing ramps. This area is pushed over the stub axles until the stub shafts engage in bearing holes located at the end of the ramps.
  • the one-handed clamp can be easily mounted. Separate axles, in particular thru axles are not required.
  • release lever and drive lever are thus injection molded of the same material made of plastic.
  • the housing may be made as an injection molded part. Only a central one Opening that receives the gear elements is provided with housing covers.
  • the one-hand clamping clamp described in the embodiment has a drive housing 2 consisting of a single plastic injection molded part.
  • This drive housing 2 has a shaft-shaped passage opening for receiving a cross-sectionally square and made of metal pull / push rod 2.
  • a fixed jaw 3 On one side of the pull / push rod 2 is located a fixed jaw 3, which is connected via a jaw carrier 5 fixed to the drive housing 1.
  • the fixed jaw 3 opposite is a movable jaw 4, which is associated with a further jaw carrier 6, at the head 7 releasably attached to the end of the pull / push rod 2.
  • the housing On the side opposite the jaws 3, 4, the housing has a substantially rectangular projecting handle handle 7, the back 7 'is rounded and which a drive lever 8 is opposite, which also has a rounded back 8', but the back 7 'of the handle handle leading the way.
  • the rounding of both the back 7 'of the handle 7 and the back 8' of the drive lever 8 extending in the extension direction of handle 7 and drive lever 8.
  • drive lever 8 and handle 7 but also rounded in the transverse direction, so that their hand or the area encompassed by the fingers is crowned.
  • the drive housing 1 has inside two continuous windows, which are closed on both sides by a housing cover 10.
  • a pointing towards the movable jaw 4 window is located on a contact surface 19 which extends transversely to the extension direction of the pull / push rod 2, a drive plate 15, which is penetrated by the pull / push rod 2, and acted upon by a return spring 16 is.
  • a drive cam 14 of the drive lever 8 engages the drive plate 15 at.
  • a locking plate 17 which is acted upon on one side by a locking plate spring 18 in a tilted position.
  • the locking plate spring 18 opposite end of the locking plate 17 is located in a C-shaped bearing jaw 20th
  • a release cam 22 of a release lever 11 act on the opposite side of the locking plate spring 18 wide side of the locking plate 17, a release cam 22 of a release lever 11 act.
  • the release lever 11 is made as well as the drive lever 8 as an injection molded part and can be operated by the index finger of a handle handle 7 and drive lever 8 comprehensive hand.
  • the injection-molded part forming the drive housing 1 forms two mutually opposite stub axles 31 in a bearing section 30. Also for storage of the release lever 11 stub axles 32 are provided.
  • the drive lever 8 made of an injection molded part has in the region of its bearing a slot 27 which forms two opposite shaft walls in an area, which run obliquely towards one another. These areas form ramps 28.
  • the ramps 28 open into bearing openings 29 which are in alignment with each other and which serve to receive the stub axle 31.
  • the bearing portion 30 is inserted into the slot 27 in such a way that the ramps 28 accumulate on the two mutually opposite axle stubs 31. By exerting force, the two slot walls then spread apart until the two stub axles 31 snap into the respectively assigned bearing openings 29. The assembly of the release lever 11 takes place in the same way.
  • Fig. 6 From the Fig. 6 is the geometric design of grip handle 7 and drive lever 8 can be seen. Grip handle 7 and drive lever 8 protrude in such a manner substantially transversely from the pull / push rod 2, that a line of symmetry 23 located in the intermediate space between grip handle 7 and drive lever 8 extends approximately transversely to the extension direction of pull / push rod 2. The line of symmetry extends through a vertex 9, which is formed by the two mutually opposite inner edges 7 "and 8" of grip handle 7 and drive lever 8.
  • the two mutually Weg josden back 7 'and 8' of grip handle 7 and drive lever 8 extend on the dash-dotted circular arc lines 24, 25.
  • the two circular arc lines intersect approximately in the bisector 23.
  • the 24 'and 25' designated centers of Circular arc lines 24, 25 lie on an imaginary line which runs parallel to the pull / push rod 2.
  • the distance A of the free end 7 "'corresponds to the grip handle 7 of the pull / push rod is about 120 mm and corresponds approximately to the radius of the circular arc line 24, on which the back 7' extends.In the exemplary embodiment, this radius corresponds to about 140 mm.
  • the radius of the circular arc line 25 on which the ridge 8 'of the drive lever 8 extends is somewhat smaller is 100 mm.
  • the distance A of the free end 8 '"of the drive lever 8 is also 120 mm
  • the radii of the circular arc lines 24, 25 are in a range between 80 and 160 mm, preferably in a range between 90 and 150 mm the radius of curvature of lying in the hand recess of a user grip handle 7 is slightly larger than that of the fingers of the hand encompassed drive lever 8.
  • the two centers 24 ', 25' are always beyond the far back, so that the largest distance between the two facing away from each other back 7 ', 8' is smaller than the smallest radius.
  • the back 7 'or 8' extends on a slightly more curved contour line.
  • This somewhat more curved contour line merges into an inner flank 7 ", 8", forming a rounded tip.
  • the rounded tip of the end sections 7 "', 8"' formed in this way lies within the two contour lines 24, 25.
  • the free ends 7 "', 8"' can rest in the hollow of the user's hand, so that the leverage effect is increased.
  • an abutment shoulder 26 for the bend between the thumb and forefinger of the user's hand lies approximately on the imaginary extension of the inner flank 8 "of the drive lever 8.
  • the inner flank 8" runs, like the inner flank 7 ", on a curved line.
  • the distance of the release lever 11 of the abutment shoulder 26, which is rounded, is dimensioned so that when the grip handle 7 and the drive lever 8 comprises holding hand of the release lever 11 can be actuated by the index finger.
  • the release lever 11 is arranged so that it can be encompassed by the tip of the index finger of the handle and the release lever spanning hand.
  • the encompassed by the index finger zone of the release lever 11 is rounded transversely to the Clearrekkungscardi of the release lever 11. In the extension direction of the release lever is rounded substantially concave.
  • the convexly rounded back 7 ', 8' extend from grip handle 7 and drive lever 8, starting from the outer ends of grip handle 7 or drive lever 8, over the main grip of the hand or the fingers Area. Both the back 7 'and the back 8' go at the end of the umgriffenen zone in each case in a concave rounded grip zone.
  • the concave rounded grip zone is more curved than the convexly rounded grip zone.
  • the concave rounded grip zone merges into the bead 26 and supports the bending between the middle finger and the index finger.
  • the handle contour forms a saddle, since here too the handle is convexly rounded in the transverse direction.
  • the drive lever 8 also forms a saddle in the region of its convexly curved section. This saddle lies directly opposite the saddle formed by the grip handle 7. In the Fig. 2 the two saddles are designated by the reference numerals 33 and 34.
  • the through the centers 24 'and 25' extending to the extension direction of the pull / push rod 2 parallel straight line intersects the handle handle 7 and the drive lever 8 near their free ends. The distance between the intersection of this line and the respective free end of grip handle 7 or drive lever 8 corresponds approximately to a quarter of the distance of the intersection of the straight line to the saddle 33 and 34th

Description

Die Erfindung betrifft eine Spannzwinge mit einem Gehäuse, durch welches eine Zug- / Schubstange greift, mit einer auf der einen Seite der Zug- / Schubstange am Gehäuse fest angeordneten festen Spannbacke und einer an der Zug- / Schubstange sitzenden beweglichen Spannbacke, welche von einem im Gehäuse angeordneten Antriebsgetriebe durch Schwenken eines Antriebshebels, der zusammen mit einer gehäusefesten Griffhandhabe auf der anderen Seite der Zug- / Schubstange am Gehäuse angeordnet ist, gegenüber der festen Spannbacke verlagerbar ist, wobei die Abstände der freien Enden von Griffhandhabe und Antriebshebel von der Zug- / Schubstange etwa gleich groß sind und die Konturlinien der voneinander wegweisenden Rücken von Griffhandhabe und Antriebshebel entlang ihrer Erstreckungsrichtung konvex gerundet sind und jeweils auf einer gedachten Kreisbogenlinie verlaufen.The invention relates to a clamp with a housing through which a pull / push rod engages, with one on one side of the pull / push rod fixed to the housing fixed jaw and a seated on the pull / push rod movable jaw, which of a arranged in the housing drive gear by pivoting a drive lever, which is arranged together with a housing-mounted handle on the other side of the pull / push rod on the housing, relative to the fixed jaw is displaceable, wherein the distances between the free ends of handle handle and drive lever of the Zug- / Push rod are about the same size and the contour lines of the groundbreaking backs of handle handle and drive lever along its extension direction are rounded convex and each run on an imaginary circular arc.

Eine derartige Spannzwinge beschreibt die US 6,676,120 B1 . Dort sind Griffhandhabe und Antriebshebel in etwa gleich lang gestaltet. Die freien Enden besitzen den gleichen Abstand von der Zug- / Schubstange. Die voneinander wegweisenden Rücken von Griffhandhabe und Antriebshebel verlaufen in dem Bereich, der von der Hand des Benutzers umgriffen wird, also der Griffzone jeweils auf Kreisbogenlinie. Die beiden Kreisbogenlinien verlaufen auf stark verschiedenen Radien. Die Kreisbogenlinie, die den Verlauf des Rückens des Antriebshebels definiert, verläuft auf einer Kreisbogenlinie, deren Radius etwa dem Doppelten der Länge des Antriebshebels entspricht. Der Radius des Rükkens der Griffhandhabe verläuft auf einer Kreisbogenlinie, deren Radius etwa dem Dreifachen der Länge des Antriebshebels entspricht. Die Hand des Benutzers darf eine gewisse Größe nicht überschreiten. Die Handbreite muss kleiner sein als der Abstand eines Vorsprunges des Endes der Griffhandhabe bzw. des Antriebshebels und einer Anlageschulter auf der festen Seite des Griffes bzw. der Griffhandhabe.Such a clamp describes the US 6,676,120 B1 , There grip handle and drive lever are designed approximately the same length. The free ends are the same distance from the pull / push rod. The mutually groundbreaking back handle handle and drive lever extend in the area that is encompassed by the hand of the user, so the grip zone each on a circular arc. The two circular arc lines run on very different radii. The circular arc line, which defines the course of the back of the drive lever, runs on a circular arc whose radius corresponds to about twice the length of the drive lever. The radius of the Rükkens the handle handle runs on a circular arc whose radius corresponds to about three times the length of the drive lever. The user's hand must not exceed a certain size. The hand width must be smaller than the distance of a projection of the end of the handle or the drive lever and a contact shoulder on the fixed side of the handle or the handle handle.

Eine Einhandspannzwinge zeigt auch die DE 197 31 579 .A one-handed clamp also shows the DE 197 31 579 ,

Die US 5,248,068 betrifft eine Kartuschenaustrittsvorrichtung mit einem Gehäuse, von dem ein Handgriff abragt, dem ein Antriebshebel benachbart ist. Die voneinander rückweisenden Flanken von Handgriff und Antriebshebel sind bereichsweise gerundet.The US 5,248,068 relates to a cartridge exit device with a housing from which protrudes a handle, which is adjacent to a drive lever. The mutually repellent flanks of handle and drive lever are partially rounded.

Der Erfindung liegt die Aufgabe zugrunde, die Betätigungselemente, also den Antriebshebel und die Griffhandhabe einer gattungsgemäßen Einhandspannzwinge ergonomisch zu verbessern.The invention has for its object to ergonomically improve the actuators, so the drive lever and the handle of a generic Einhandspannzwinge.

Gelöst wird die Aufgabe durch die in den Ansprüchen angegebene Erfindung.The object is achieved by the invention specified in the claims.

Die im Anspruch 1 angegebenen Merkmale bilden die bekannte Spannzwinge handhabungstechnisch weiter. Die Handhabung ist ergonomisch günstiger. Hierzu ist zunächst und im Wesentlichen vorgesehen, dass die voneinander wegweisenden Rücken von Griffhandhabe und Antriebshebel derart konvex gerundet sind, dass die Kreisbogenlinien Begrenzungslinien ausbilden, über welche sich die Konturlinie über die gesamte Griffzone nicht nach radial außen hin erstreckt. Die Konturlinie läuft über die gesamte Griffzone bis zu den freien Enden der Griffhandhabe bzw. des Antriebshebels in einem Bereich, der von den Kreisbogenlinien nach radial außen hin begrenzt ist. Lediglich in den Endbereichen von Griffhandhabe und Antriebshebel verlässt die Konturlinie die gedachte Kreisbogenlinie. Die Konturlinie krümmt sich dort stärker. Sie verlässt die Kreisbogenlinie hin zu ihrem Mittelpunkt. Die dadurch spitz auslaufenden freien Enden von Konturlinie der Griffhandhabe und Konturlinie des Antriebshebels liegen im Bereich der Kreisbogenlinien. Hierdurch kann sich die Höhlung der Hand des Benutzers auch auf den Bereichen der freien Enden von sowohl der Griffhandhabe als auch des Antriebshebels abstützen. Die je nach Griffrichtung entweder den Antriebshebel oder die Griffhandhabe umfassenden Finger der Hand liegen dann auf den Bereichen der Rücken, die der Kreisbogenlinie folgen. Anders als beim gattungsgemäßen Stand der Technik sind die Rücken von sowohl Griffhandhabe als auch Antriebshebel stärker gekrümmt. Hierdurch ist die Griffhaltung des Benutzers in einem erheblich gröβeren Maße variierbar, als beim Stand der Technik, wo zusätzlich die nach radial außen abragenden Vorsprünge im Bereich der Enden von Antriebshebel und Griffhandhabe stören. Die Griffhandhabe und der Antriebshebel sind nicht nur in der jeweiligen Erstreckungsrichtung gerundet. Bevorzugt sind Griffhandhabe und Antriebshebel aber auch quer zur Erstreckungsrichtung gerundet. Diese Rundung besitzt aber eine erheblich größere Krümmung, als die Rundung in Erstreckungsrichtung. Griffhandhabe und Antriebshebel haben eine ähnliche Gestalt. Sie bilden jeweils Rücken aus, deren Krümmungskontur vorzugsweise auf einer Kreisbogenlinie liegen. Die gedachten Kreisbogenlinien haben nahezu den gleichen Krümmungsradius. Bevorzugt ist der Krümmungsradius der Griffhandhabe, die in der Höhlung der Hand eines Benutzers liegt, etwas weniger stark gerundet, als der Rücken des Antriebshebels, um welchen die Finger der Hand des Benutzers greifen. Die beiden Rücken sind so voneinander beabstandet, dass die Hand des Benutzers Griffhandhabe und Antriebshebel bequem umgreifen können. Ein vor der Handhabe angeordneter Lösehebel ist kürzer gestaltet. Er besitzt eine Länge, die ausreichend groß ist, um den Lösehebel mit dem Zeigefinger zu umfassen. Er besitzt hierzu auch einen entsprechenden Abstand zur Griffhandhabe. Das zur Zug- / Schubstange weisende Ende der Griffhandhabe bildet zudem einen Wulst aus, gegen den die Beuge zwischen Daumen und Zeigefinger der Hand des Benutzers liegt. Es ist aber auch möglich, die Spannzwinge anders herum zu betätigen, indem der Antriebshebel mit seinem Rücken in der Mulde der Hand des Benutzers liegt und die Finger der Hand des Benutzers die Griffhandhabe umfassen. Da die beiden Kreisbogenlinien ähnliche Radien haben, ist auch bei dieser Betätigungsweise eine ergonomische Handhabung möglich. In einer Weiterbildung der Erfindung ist vorgesehen, dass Griffhandhabe und Antriebshebel in einer gewissen Symmetrie zueinander angeordnet sind. Griffhandhabe und Antriebshebel bilden einen Abstandsraum zwischen sich aus. Als Winkelhalbierende verläuft eine Symmetrielinie durch diesen Abstandsraum und liegt schneidet einen Scheitel. Die Krümmungsbögen sind vorzugsweise so gelegt, dass sie sich etwa in der Symmetrielinie schneiden. Diese Symmetrielinie verläuft quer zur Erstrekkungsrichtung der Zug- / Schubstange. Die beiden Mittelpunkte der Krümmungslinien, auf denen die Rücken von sowohl Antriebshebel als auch Griffhandhabe verlaufen, liegen auf einer Linie, die sich im Wesentlichen parallel zur Zug- / Schubstange erstreckt. Die Radien liegen in der Größenordnung der Längen von Griffhandhabe bzw. Antriebshebel. Auch die Innenflanken von Griffhandhabe und Antriebshebel, die aufeinander zuweisen, sind gerundet. Sie sind aber weniger stark gerundet, als ihre Rücken.The features specified in claim 1 form the known clamping clamp handling technology further. The handling is ergonomically favorable. For this purpose, it is initially and essentially provided that the mutually groundbreaking back of grip handle and drive lever are rounded convexly such that the circular arc lines form boundary lines over which the contour line does not extend radially outward over the entire grip zone. The contour line runs over the entire grip zone up to the free ends of the grip handle or the drive lever in a region which is bounded by the circular arc lines radially outward. Only in the end areas of handle handle and drive lever, the contour line leaves the imaginary circular arc line. The contour line curves more strongly there. She leaves the circular arc towards her center. The resulting tapered free ends of contour line of the handle handle and contour line of the drive lever are in the field of circular arc lines. In this way, the cavity of the user's hand can also be supported on the areas of the free ends of both the handle handle and the drive lever. The depending on Gripping direction either the drive lever or the handle handle comprehensive fingers of the hand then lie on the areas of the back, which follow the circular arc line. Unlike the generic prior art, the backs of both grip handle and drive lever are more curved. As a result, the grip position of the user is variable to a considerably greater extent than in the prior art, where in addition interfere with the radially outwardly projecting projections in the region of the ends of the drive lever and handle handle. The grip handle and the drive lever are not only rounded in the respective extension direction. Preferably, grip handle and drive lever are rounded but also transversely to the extension direction. However, this rounding has a considerably greater curvature than the rounding in the extension direction. Grip handle and drive lever have a similar shape. They each form spines whose curvature contour preferably lies on a circular arc line. The imaginary circular arc lines have almost the same radius of curvature. Preferably, the radius of curvature of the handle handle that lies in the cavity of a user's hand is slightly less rounded than the back of the drive lever around which the fingers of the user's hand grip. The two backs are spaced apart so that the user's hand can grip grip handle and drive lever comfortably. An arranged in front of the handle release lever is designed shorter. It has a length which is sufficiently large to encompass the release lever with the index finger. He also has a corresponding distance to the handle handle. The pointing to the push / push rod end of the handle handle also forms a bead, against which the bend lies between the thumb and forefinger of the user's hand. But it is also possible to operate the vice around the other way by the drive lever is located with his back in the hollow of the user's hand and the fingers of the user's hand include the grip handle. Since the two circular arc lines have similar radii, ergonomic handling is also possible with this method of operation. In a development of the invention is provided that handle handle and drive lever are arranged in a certain symmetry to each other. Grip handle and drive lever form a distance space between them. As an angle bisector, a symmetry line runs through this distance space and intersects a vertex. The curvature arcs are preferably laid so that they intersect approximately in the symmetry line. This symmetry line runs transversely to the direction of extension of the pull / push rod. The two midpoints of the lines of curvature on which the ridges of both the drive lever and the handle handle extend are in a line that extends substantially parallel to the pull / push rod. The radii are in the order of the lengths of grip handle or drive lever. The inner flanks of grip handle and drive lever, which assign each other, are rounded. But they are less rounded than their backs.

In einer Weiterbildung der Erfindung ist vorgesehen, dass Antriebshebel und Lösehebel dem Antriebskörper klipszugeordnet sind. Hierzu bildet das Antriebsgehäuse einen Lagerabschnitt aus, der sowohl auf der einen als auch auf der anderen Breitseite jeweils einen Achsstummel ausbildet. Über diesen Achsstummel kann der Antriebshebel geklippst werden. Der Lösehebel wird in derselben Weise über ihm zugeordnete Achsstummel geklippst. Hierzu bildet der Hebel einen Schlitz aus. Innerhalb des Schlitzes befindet sich ein Bereich, der zwei sich gegenüberliegende Auflaufschrägen ausbildet. Dieser Bereich wird über die Achsstummel geschoben, bis die Achsstummel in Lageröffnungen einrasten, die sich am Ende der Auflaufschrägen befinden. Zufolge dieser Ausgestaltungen kann die Einhandspannzwinge einfach montiert werden. Gesonderte Achsen, insbesondere Steckachsen sind nicht erforderlich. Es sind auch die jeweiligen ins Gehäuse hineinragenden Enden von Lösehebel und Antriebshebel, die unmittelbar auf den Antriebsmechanismus wirken. Lösehebel und Antriebshebel sind somit materialeinheitlich aus Kunststoff spritzgegossen. Auch das Gehäuse kann als Spritzgussteil hergestellt sein. Lediglich eine zentrale Öffnung, die die Getriebeelemente aufnimmt, ist mit Gehäuseabdeckungen versehen.In a further development of the invention it is provided that drive lever and release lever are klipszugeordnet the drive body. For this purpose, the drive housing forms a bearing section, which forms a stub axle on both the one and the other broad side. About this stub axle, the drive lever can be clipped. The release lever is clipped in the same way over its assigned stub axle. For this purpose, the lever forms a slot. Within the slot is an area that forms two opposing ramps. This area is pushed over the stub axles until the stub shafts engage in bearing holes located at the end of the ramps. According to these embodiments, the one-handed clamp can be easily mounted. Separate axles, in particular thru axles are not required. It is also the respective projecting into the housing ends of release lever and drive lever, which act directly on the drive mechanism. Release lever and drive lever are thus injection molded of the same material made of plastic. Also, the housing may be made as an injection molded part. Only a central one Opening that receives the gear elements is provided with housing covers.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand beigefügter Zeichnungen erläutert. Es zeigen:

Fig.1
die Darstellung einer Einhandspannzwinge im montierten Zustand,
Fig. 2
eine Darstellung gemäß Fig.1 mit entfernter Gehäuseabdeckung,
Fig. 3
eine Darstellung gemäß Fig. 2 mit betätigtem Antriebshebel,
Fig. 4
eine Darstellung gemäß Fig. 2 mit betätigtem Lösehebel,
Fig. 5
eine Darstellung gemäß Fig. 3 mit einer Hand eines Benutzers zur Verdeutlichung der Größenverhältnisse von Antriebshebel, Griff- handhabe und Lösehebel,
Fig. 6
eine Darstellung gemäß Fig. 2 mit als strichpunktierte Bogenlinien eingezeichneten Kreisbögen zur Verdeutlichung des Verlaufes der Rücken 7', 8' von Griffhandhabe 7 bzw. Antriebshebel 8,
Fig. 7
eine Darstellung des Antriebsgehäuses als materialeinheitliches Spritzgussteil,
Fig. 8
einen Schnitt gemäß der Linie VIII - VIII in Fig. 7,
Fig. 9
in perspektivischer Darstellung einen Antriebshebel in Unteransicht,
Fig. 10
einen Längsmittelschnitt durch den Schlitz 27 des Antriebshebels 8,
Fig.11
einen Schnitt gemäß der Linie XI - XI in Fig. 2.
An embodiment of the invention will be explained below with reference to accompanying drawings. Show it:
Fig.1
the representation of a one-hand clamping clamp in the assembled state,
Fig. 2
a representation according to Fig.1 with the housing cover removed,
Fig. 3
a representation according to Fig. 2 with activated drive lever,
Fig. 4
a representation according to Fig. 2 with activated release lever,
Fig. 5
a representation according to Fig. 3 with one hand of a user to clarify the proportions of the drive lever, handle and release lever,
Fig. 6
a representation according to Fig. 2 with circular arcs drawn as a dot-dash line to clarify the course of the ridges 7 ', 8' of the handle 7 or the drive lever 8,
Fig. 7
a representation of the drive housing as a unitary injection-molded part,
Fig. 8
a section along the line VIII - VIII in Fig. 7 .
Fig. 9
in perspective view a drive lever in bottom view,
Fig. 10
a longitudinal center section through the slot 27 of the drive lever 8,
Figure 11
a section along the line XI - XI in Fig. 2 ,

Die in dem Ausführungsbeispiel beschriebene Einhandspannzwinge besitzt einen aus einem einzigen Kunststoffspritzgussteil bestehendes Antriebsgehäuse 2. Dieses Antriebsgehäuse 2 besitzt eine schachtförmige Durchtrittsöffnung zur Aufnahme einer im Querschnitt quadratischen und aus Metall bestehenden Zug- / Schubstange 2. Auf der einen Seite der Zug- / Schubstange 2 befindet sich eine feste Backe 3, die über einen Backenträger 5 fest mit dem Antriebsgehäuse 1 verbunden ist.The one-hand clamping clamp described in the embodiment has a drive housing 2 consisting of a single plastic injection molded part. This drive housing 2 has a shaft-shaped passage opening for receiving a cross-sectionally square and made of metal pull / push rod 2. On one side of the pull / push rod 2 is located a fixed jaw 3, which is connected via a jaw carrier 5 fixed to the drive housing 1.

Der festen Backe 3 gegenüber befindet sich eine bewegliche Backe 4, die einem weiteren Backenträger 6 zugeordnet ist, an deren Kopf 7 lösbar das Ende der Zug- / Schubstange 2 befestigt ist.The fixed jaw 3 opposite is a movable jaw 4, which is associated with a further jaw carrier 6, at the head 7 releasably attached to the end of the pull / push rod 2.

Auf der den Backen 3, 4 gegenüberliegenden Seite besitzt das Gehäuse eine im Wesentlichen rechtwinklig abragende Griffhandhabe 7, deren Rücken 7' gerundet ist und welcher einem Antriebshebel 8 gegenüberliegt, die ebenfalls einen gerundeten Rücken 8' aufweist, der aber vom Rücken 7' der Griffhandhabe wegweisend verläuft. Die Rundung von sowohl Rücken 7' der Griffhandhabe 7 als auch Rücken 8' des Antriebshebels 8 verlaufen in Erstreckungsrichtung von Griffhandhabe 7 bzw. Antriebshebel 8. Darüber hinaus sind Antriebshebel 8 und Griffhandhabe 7 aber auch in Querrichtung dazu gerundet, so dass ihre von der Hand bzw. den Fingern umgriffene Zone ballig ist.On the side opposite the jaws 3, 4, the housing has a substantially rectangular projecting handle handle 7, the back 7 'is rounded and which a drive lever 8 is opposite, which also has a rounded back 8', but the back 7 'of the handle handle leading the way. The rounding of both the back 7 'of the handle 7 and the back 8' of the drive lever 8 extending in the extension direction of handle 7 and drive lever 8. In addition, drive lever 8 and handle 7 but also rounded in the transverse direction, so that their hand or the area encompassed by the fingers is crowned.

Das Antriebsgehäuse 1 besitzt im Inneren zwei durchgehende Fenster, die auf beiden Seiten von einer Gehäuseabdeckung 10 verschlossen sind. In einem zur beweglichen Backe 4 hinweisenden Fenster liegt an einer Anlagefläche 19, die sich quer zur Erstreckungsrichtung der Zug- / Schubstange 2 erstreckt, eine Antriebsplatte 15 an, die von der Zug- / Schubstange 2 durchgriffen ist, und die von einer Rückstellfeder 16 beaufschlagt ist. Auf einer der Rückstellfeder 16 gegenüberliegenden Seite greift ein Antriebsnocken 14 des Antriebshebels 8 an der Antriebsplatte 15 an. Wird der Antriebshebel 8 verschwenkt, so verkantet sich die Öffnung, in welcher die Zug- / Schubstange 2 einliegt mit den Schmalseiten der Zug- / Schubstange, so dass ein Verschwenken des Antriebshebels 8 eine Linearverlagerung der Zug- / Schubstange 2 derart zur Folge hat, dass die beiden Backen 3, 4 aufeinander zu bewegt werden. Das Werkzeug kann aber auch als Spreizzwinge verwendet werden. Dann werden die Backen 3, 4 schrittweise voneinander wegbewegt.The drive housing 1 has inside two continuous windows, which are closed on both sides by a housing cover 10. In a pointing towards the movable jaw 4 window is located on a contact surface 19 which extends transversely to the extension direction of the pull / push rod 2, a drive plate 15, which is penetrated by the pull / push rod 2, and acted upon by a return spring 16 is. On a return spring 16 opposite side, a drive cam 14 of the drive lever 8 engages the drive plate 15 at. If the drive lever 8 is pivoted, so tilted the opening in which the pull / push rod 2 rests with the narrow sides of the pull / push rod, so that a pivoting of the drive lever 8, a linear displacement of the pull / push rod 2 has the consequence that the two jaws 3, 4 each other to be moved. The tool can also be used as Spreizzwinge. Then the jaws 3, 4 are gradually moved away from each other.

In dem anderen Fenster liegt schwenkbeweglich eine Sperrplatte 17, die auf einer Seite von einer Sperrplattenfeder 18 in eine Verkantstellung beaufschlagt ist. Das der Sperrplattenfeder 18 gegenüberliegende Ende der Sperrplatte 17 liegt in einem C-förmigen Lagermaul 20.In the other window is pivotally mounted a locking plate 17 which is acted upon on one side by a locking plate spring 18 in a tilted position. The locking plate spring 18 opposite end of the locking plate 17 is located in a C-shaped bearing jaw 20th

Auf der der Sperrplattenfeder 18 gegenüberliegenden Breitseite der Sperrplatte 17 kann ein Auslösenocken 22 eines Lösehebels 11 wirken. Der Lösehebel 11 ist ebenso wie der Antriebshebel 8 als Spritzgussteil gefertigt und kann vom Zeigefinger einer Griffhandhabe 7 und Antriebshebel 8 umfassenden Hand betätigt werden.On the opposite side of the locking plate spring 18 wide side of the locking plate 17, a release cam 22 of a release lever 11 act. The release lever 11 is made as well as the drive lever 8 as an injection molded part and can be operated by the index finger of a handle handle 7 and drive lever 8 comprehensive hand.

Wie aus der Fig. 7 zu entnehmen ist, bildet das das Antriebsgehäuse 1 ausbildende Spritzgussteil zwei sich gegenüberliegende Achsstummel 31 in einem Lagerabschnitt 30 aus. Auch zur Lagerung des Lösehebels 11 sind Achsstummel 32 vorgesehen.Like from the Fig. 7 can be seen, the injection-molded part forming the drive housing 1 forms two mutually opposite stub axles 31 in a bearing section 30. Also for storage of the release lever 11 stub axles 32 are provided.

Wie aus den Figuren 9 bis 11 hervorgeht, besitzt der aus einem Spritzgussteil gefertigte Antriebshebel 8 im Bereich seines Lagers einen Schlitz 27, welcher in einem Bereich zwei gegenüberliegende Schachtwände ausbildet, die schräg aufeinander zulaufen. Diese Bereiche bilden Auflaufschrägen 28. Die Auflaufschrägen 28 münden in Lageröffnungen 29, die fluchtend einander gegenüberliegen und die der Aufnahme der Achsstummel 31 dienen.Like from the FIGS. 9 to 11 shows, the drive lever 8 made of an injection molded part has in the region of its bearing a slot 27 which forms two opposite shaft walls in an area, which run obliquely towards one another. These areas form ramps 28. The ramps 28 open into bearing openings 29 which are in alignment with each other and which serve to receive the stub axle 31.

Die Montage des Antriebshebels und auch des Lösehebels erfolgt wie folgt:The assembly of the drive lever and the release lever is done as follows:

Der Lagerabschnitt 30 wird derartig in den Schlitz 27 eingeführt, dass die Auflaufschrägen 28 auf den beiden sich gegenüberliegenden Achsstummeln 31 auflaufen. Durch Ausübung von Kraft spreizen sich dann die beiden Schlitzwände auseinander, bis die beiden Achsstummel 31 in die jeweils ihnen zugeordneten Lageröffnungen 29 einschnäppern. Die Montage des Lösehebels 11 erfolgt in gleicher Weise.The bearing portion 30 is inserted into the slot 27 in such a way that the ramps 28 accumulate on the two mutually opposite axle stubs 31. By exerting force, the two slot walls then spread apart until the two stub axles 31 snap into the respectively assigned bearing openings 29. The assembly of the release lever 11 takes place in the same way.

Aus der Fig. 6 ist die geometrische Gestaltung von Griffhandhabe 7 und Antriebshebel 8 zu erkennen. Griffhandhabe 7 und Antriebshebel 8 ragen derartig im Wesentlichen quer von der Zug- / Schubstange 2 ab, dass eine im Zwischenraum zwischen Griffhandhabe 7 und Antriebshebel 8 liegende Symmetrielinie 23 sich etwa quer zur Erstreckungsrichtung von Zug- / Schubstange 2 erstreckt. Die Symmetrielinie verläuft durch einen Scheitel 9, der von den beiden einander gegenüberliegenden Innenflanken 7" und 8" von Griffhandhabe 7 und Antriebshebel 8 gebildet ist.From the Fig. 6 is the geometric design of grip handle 7 and drive lever 8 can be seen. Grip handle 7 and drive lever 8 protrude in such a manner substantially transversely from the pull / push rod 2, that a line of symmetry 23 located in the intermediate space between grip handle 7 and drive lever 8 extends approximately transversely to the extension direction of pull / push rod 2. The line of symmetry extends through a vertex 9, which is formed by the two mutually opposite inner edges 7 "and 8" of grip handle 7 and drive lever 8.

Die beiden jeweils voneinander wegweisenden Rücken 7' und 8' von Griffhandhabe 7 und Antriebshebel 8 verlaufen auf den strichpunktiert dargestellten Kreisbogenlinien 24, 25. Die beiden Kreisbogenlinien schneiden sich etwa im Bereich der Winkelhalbierenden 23. Die mit 24' bzw. 25' bezeichneten Mittelpunkte der Kreisbogenlinien 24, 25 liegen auf einer gedachten Linie, die zur Zug- / Schubstange 2 parallel verläuft.The two mutually Wegweisenden back 7 'and 8' of grip handle 7 and drive lever 8 extend on the dash-dotted circular arc lines 24, 25. The two circular arc lines intersect approximately in the bisector 23. The 24 'and 25' designated centers of Circular arc lines 24, 25 lie on an imaginary line which runs parallel to the pull / push rod 2.

Der Abstand A des freien Endes 7"' der Griffhandhabe 7 von der Zug- / Schubstange entspricht beträgt etwa 120 mm und entspricht in etwa dem Radius der Kreisbogenlinie 24, auf der der Rücken 7' verläuft. Im Ausführungsbeispiel entspricht dieser Radius etwa 140 mm. Der Radius der Kreisbogenlinie 25, auf welcher der Rücken 8' des Antriebshebels 8 verläuft, ist etwas geringer. Er beträgt 100 mm. Der Abstand A des freien Endes 8'" des Antriebshebels 8 beträgt ebenfalls 120 mm. Vorzugsweise liegen die Radien der Kreisbogenlinien 24, 25 in einem Bereich zwischen 80 und 160 mm, vorzugsweise in einem Bereich zwischen 90 und 150 mm. Es ist vorteilhaft, wenn der Krümmungsradius der in der Handmulde eines Benutzers liegenden Griffhandhabe 7 etwas größer ist, als der des von den Fingern der Hand umfassten Antriebshebels 8. Die beiden Mittelpunkte 24', 25' liegen aber immer jenseits des abgewandten Rückens, so dass der größte Abstand der beiden voneinander wegweisenden Rücken 7', 8' kleiner ist, als der kleinste Radius.The distance A of the free end 7 "'corresponds to the grip handle 7 of the pull / push rod is about 120 mm and corresponds approximately to the radius of the circular arc line 24, on which the back 7' extends.In the exemplary embodiment, this radius corresponds to about 140 mm. The radius of the circular arc line 25 on which the ridge 8 'of the drive lever 8 extends is somewhat smaller is 100 mm. The distance A of the free end 8 '"of the drive lever 8 is also 120 mm, Preferably, the radii of the circular arc lines 24, 25 are in a range between 80 and 160 mm, preferably in a range between 90 and 150 mm the radius of curvature of lying in the hand recess of a user grip handle 7 is slightly larger than that of the fingers of the hand encompassed drive lever 8. However, the two centers 24 ', 25' are always beyond the far back, so that the largest distance between the two facing away from each other back 7 ', 8' is smaller than the smallest radius.

Im Bereich der freien Enden 7"' bzw. 8"' verläuft der Rücken 7' bzw. 8' auf einer etwas stärker gekrümmten Konturlinie. Diese etwas stärker gekrümmte Konturlinie geht unter Ausbildung einer gerundeten Spitze jeweils in eine Innenflanke 7", 8" über. Dabei liegt die so ausgebildete gerundete Spitze der Endabschnitte 7"', 8"' innerhalb der beiden Konturlinien 24, 25. Es sind also keine nach außen ragenden Vorsprünge vorhanden. Die freien Enden 7"', 8"' können je nach Griffrichtung des Benutzers in der Höhlung der Hand des Benutzers einliegen, so dass die Hebelwirkung erhöht ist.In the area of the free ends 7 "'and 8"', the back 7 'or 8' extends on a slightly more curved contour line. This somewhat more curved contour line merges into an inner flank 7 ", 8", forming a rounded tip. In this case, the rounded tip of the end sections 7 "', 8"' formed in this way lies within the two contour lines 24, 25. Thus, there are no outwardly projecting projections. Depending on the grip direction of the user, the free ends 7 "', 8"' can rest in the hollow of the user's hand, so that the leverage effect is increased.

Wie aus der Fig. 6 des Weiteren hervorgeht, liegt eine Anlageschulter 26 für die Beuge zwischen Daumen und Zeigefinger der Hand des Benutzers etwa auf der gedachten Verlängerung der Innenflanke 8" des Antriebshebels 8. Die Innenflanke 8" verläuft ebenso wie die Innenflanke 7" auf einer gekrümmten Linie.Like from the Fig. 6 Furthermore, an abutment shoulder 26 for the bend between the thumb and forefinger of the user's hand lies approximately on the imaginary extension of the inner flank 8 "of the drive lever 8. The inner flank 8" runs, like the inner flank 7 ", on a curved line.

Der Abstand des Lösehebels 11 von der Anlageschulter 26, welche gerundet ist, ist so bemessen, dass bei die Griffhandhabe 7 und den Antriebshebel 8 umfasst haltender Hand der Lösehebel 11 vom Zeigefinger betätigt werden kann.The distance of the release lever 11 of the abutment shoulder 26, which is rounded, is dimensioned so that when the grip handle 7 and the drive lever 8 comprises holding hand of the release lever 11 can be actuated by the index finger.

Der Lösehebel 11 ist so angeordnet, dass er von der Kuppe des Zeigefingers der den Griff und den Auslösehebel umspannenden Hand umgriffen werden kann.The release lever 11 is arranged so that it can be encompassed by the tip of the index finger of the handle and the release lever spanning hand.

Die vom Zeigefinger umgriffene Zone des Lösehebels 11 ist quer zur Erstrekkungsrichtung des Lösehebels 11 gerundet. In Erstreckungsrichtung ist der Lösehebel im Wesentlichen konkav gerundet.The encompassed by the index finger zone of the release lever 11 is rounded transversely to the Erstrekkungsrichtung of the release lever 11. In the extension direction of the release lever is rounded substantially concave.

Wie aus den Figuren ferner zu entnehmen ist, erstrecken sich die konvex gerundeten Rücken 7', 8' von Griffhandhabe 7 und Antriebshebel 8 beginnend von den äußeren Enden von Griffhandhabe 7 bzw. Antriebshebel 8 über den wesentlichen, von der Hand bzw. den Fingern umgriffenen Bereich. Sowohl der Rücken 7' als auch der Rücken 8' gehen am Ende der umgriffenen Zone jeweils in eine konkav gerundete Griffzone über. Die konkav gerundete Griffzone ist stärker gekrümmt, als die konvex gerundete Griffzone. Bei der Griffhandhabe 7 geht die konkav gerundete Griffzone in den Wulst 26 über und lagert die Beuge zwischen Mittelfinger und Zeigefinger. Hier bildet die Griffkontur einen Sattel aus, da auch hier der Griff in Querrichtung konvex gerundet ist. Auch der Antriebshebel 8 bildet im Bereich seines konvex gekrümmten Abschnittes einen Sattel aus. Dieser Sattel liegt dem von der Griffhandhabe 7 gebildeten Sattel direkt gegenüber. In der Fig. 2 sind die beiden Sattel mit den Bezugsziffern 33 und 34 bezeichnet. Die durch die Mittelpunkte 24' und 25' verlaufende, zur Erstreckungsrichtung der Zug- / Schubstange 2 parallel verlaufende Gerade schneidet die Griffhandhabe 7 bzw. den Antriebshebel 8 nahe ihrer freien Enden. Der Abstand zwischen dem Schnittpunkt dieser Geraden und dem jeweiligen freien Ende von Griffhandhabe 7 bzw. Antriebshebel 8 entspricht ungefähr einem Viertel des Abstandes des Schnittpunktes der Geraden zum Sattel 33 bzw. 34.As can also be seen from the figures, the convexly rounded back 7 ', 8' extend from grip handle 7 and drive lever 8, starting from the outer ends of grip handle 7 or drive lever 8, over the main grip of the hand or the fingers Area. Both the back 7 'and the back 8' go at the end of the umgriffenen zone in each case in a concave rounded grip zone. The concave rounded grip zone is more curved than the convexly rounded grip zone. In the grip handle 7, the concave rounded grip zone merges into the bead 26 and supports the bending between the middle finger and the index finger. Here, the handle contour forms a saddle, since here too the handle is convexly rounded in the transverse direction. The drive lever 8 also forms a saddle in the region of its convexly curved section. This saddle lies directly opposite the saddle formed by the grip handle 7. In the Fig. 2 the two saddles are designated by the reference numerals 33 and 34. The through the centers 24 'and 25' extending to the extension direction of the pull / push rod 2 parallel straight line intersects the handle handle 7 and the drive lever 8 near their free ends. The distance between the intersection of this line and the respective free end of grip handle 7 or drive lever 8 corresponds approximately to a quarter of the distance of the intersection of the straight line to the saddle 33 and 34th

Claims (10)

  1. Clamp, comprising a housing (1) through which a push/pull bar (2) extends, comprising a fixed clamping jaw (3) arranged rigidly on the housing (1) on one side of the push/pull bar (2) and a movable clamping jaw (4) which is mounted on the push/pull bar (2) and is displaceable relative to the fixed clamping jaw by a drive mechanism arranged in the housing (1) by pivoting a drive lever (8) which, together with a gripping handle (7) fixed to the housing, is arranged on the housing on the other side of the push/pull bar (2), the spacings (A) of the free ends (7"', 8"') of the gripping handle (7) and drive lever (8) from the push/pull bar (1) being approximately equal, and the contour lines of the backs (7', 8'), facing away from one another, of the gripping handle (7) and drive lever (8) being convexly rounded along the extension direction thereof and respectively extending over an imaginary arcuate line (24, 25), characterised in that the contour lines are defined radially outwardly over the entire gripping zone up to the free ends (7"', 8"') by the arcuate lines (24, 25) and, in the region of the free ends (7"', 8"'), leave the imaginary arcuate lines (24, 25) toward the centre points (24', 25') thereof, the lengths of the radii of the arcuate lines (24', 25') being at least 70 % of the spacing (A) and at most 200 % of the spacing (A).
  2. Clamp according to claim 1, characterised in that the end tips of the free ends (7"', 8"'), which end tips are formed by the inner flanks (7", 8") of the gripping handle (7) and drive lever (8) together with the grip backs (7', 8'), lie within the arcuate lines (24, 25).
  3. Clamp according to either claim 1 or claim 2, characterised in that the line of symmetry extends through a vertex (9) formed by the mutually opposed inner flanks (7", 8") of the gripping handle (7) and drive lever (8).
  4. Clamp according to any one of the preceding claims, characterised in that the lengths of the radii of the arcuate lines (24, 25) correspond approximately to the length of the gripping handle (7) and to the length of the drive lever (8).
  5. Clamp according to any one of the preceding claims, characterised in that the centre points (24', 25') of the arcuate lines (24, 25) lie on an imaginary line which extends parallel to the push/pull bar (2).
  6. Clamp according to any one of the preceding claims, characterised in that the inner flanks (7", 8") of the gripping handle (7) and drive lever (8) are less curved than the backs (7', 8') thereof.
  7. Clamp according to any one of the preceding claims, characterised in that the radii of curvature are between 80 and 160 mm, preferably 90 and 150 mm and in particular 100 and 140 mm, and the spacing (A) is approximately 120 mm.
  8. Clamp according to any one of the preceding claims, characterised in that the drive lever (8) and/or a release lever (11) are clipped on axle journals (31) of the housing (1) to release a return lock.
  9. Clamp according to claim 8 or in particular according thereto, characterised in that the axle journals (31) are moulded onto the drive housing (1) in a materially integral manner.
  10. Clamp according to either claim 8 or claim 9, characterised in that the release lever (11) and the drive lever (8) consist of plastics material and form a slot (27) with opposing run-on slopes (28), the run-on slopes (28) transitioning into bearing openings (29).
EP06111449A 2005-04-01 2006-03-21 Bar clamp Active EP1707317B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005015336 2005-04-01
DE102006010383A DE102006010383A1 (en) 2005-04-01 2006-03-03 clamp

Publications (3)

Publication Number Publication Date
EP1707317A2 EP1707317A2 (en) 2006-10-04
EP1707317A3 EP1707317A3 (en) 2008-04-30
EP1707317B1 true EP1707317B1 (en) 2011-05-25

Family

ID=36602462

Family Applications (1)

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EP06111449A Active EP1707317B1 (en) 2005-04-01 2006-03-21 Bar clamp

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US (1) US20060255519A1 (en)
EP (1) EP1707317B1 (en)
CA (1) CA2541252C (en)
DE (1) DE102006010383A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090206534A1 (en) * 2008-02-14 2009-08-20 Mccracken Robert E CamLock Clamp
DE102012201921A1 (en) * 2012-02-09 2013-08-14 Andreas Maier Gmbh & Co. Kg Clamp for a clamping device
CN104070480B (en) 2013-03-15 2018-06-22 创科电动工具科技有限公司 clamping and expansion tool

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US5005449A (en) * 1990-02-14 1991-04-09 Peterson Manufacturing Co., Inc. Hand tool or improved bar clamp
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DE29821110U1 (en) * 1998-11-25 2000-04-06 Wolfcraft Gmbh One-handed clamp
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Also Published As

Publication number Publication date
CA2541252A1 (en) 2006-10-01
US20060255519A1 (en) 2006-11-16
CA2541252C (en) 2014-07-29
EP1707317A3 (en) 2008-04-30
EP1707317A2 (en) 2006-10-04
DE102006010383A1 (en) 2006-10-05

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