EP0824996B1 - Wrench with adjustable opening - Google Patents
Wrench with adjustable opening Download PDFInfo
- Publication number
- EP0824996B1 EP0824996B1 EP97110983A EP97110983A EP0824996B1 EP 0824996 B1 EP0824996 B1 EP 0824996B1 EP 97110983 A EP97110983 A EP 97110983A EP 97110983 A EP97110983 A EP 97110983A EP 0824996 B1 EP0824996 B1 EP 0824996B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- joint
- leg
- locking pin
- gripping
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/06—Joints
- B25B7/10—Joints with adjustable fulcrum
Definitions
- the invention relates to a gripper, as characterized in the preamble of claim 1.
- a gripping pliers which consists of a pliers handle and a pliers bracket with a locking hole, each having a handle section and a jaw opposite the handle section, the pliers handle and the pliers bracket in a joint to one another Pivot axis are pivotally mounted and the joint has an engagement position and an adjustment position.
- the forceps handle is provided with a slot in the area of the joint through which the forceps clip is inserted, so that the forceps handle engages around the forceps bar on both sides in the area of the joint.
- An adjusting element which can be manually displaced in the direction of the pivot axis against a spring and which comprises a locking pin is provided for adjusting the engagement position and the adjustment position, the locking pin forming the bearing axis of the joint in the engagement position.
- the pliers handle and the pliers bracket delimit a space in the area of the joint into which the locking pin can be pressed in against the bias of the spring.
- the spring is adjacent to the pivot axis or arranged approximately coaxially to the pivot axis.
- the star-shaped cross section of the profiled locking pin engages positively in the locking hole in the longitudinal direction of the locking hole.
- the locking pin is biased into its engagement position by an unprotected leaf spring, which is located on the outside of the joint opposite the locking pin.
- the locking pin To adjust the mouth width of the known gripping pliers, the locking pin must be pressed against the force of the leaf spring into the pliers joint, so that its larger cross section is pressed out of the locking hole. Then the pliers bracket can be adjusted against the pliers handle to the desired extent. As soon as the locking pin is released, the leaf spring presses it into the engagement position with the locking hole and the intended jaw width of the gripping pliers is fixed.
- the locking pin has a first area of smaller diameter and a second area of larger diameter
- the tong clip has an elongated locking hole in which the locking pin with its first area is rotatably immovable and with its second area slidably engages in the longitudinal direction.
- a structure according to claim 1 ensures a particularly simple and therefore reliable construction.
- Springs such as a coil spring, a plate spring or an elastomer spring are possible for preloading and offer their specific advantages.
- Another embodiment of the present invention can also provide that a snap spring is assigned to the locking pin, which serves to pretension the locking pin and closes the space to the outside. With this arrangement, the sealing of the adjusting device is achieved to the outside, while the snap spring resilient over a dead center simultaneously takes over the pretensioning of the locking pin. This arrangement saves another component compared to the preloading by means of a spring, since the snap spring takes over the function of the spring and the cover plate in one piece.
- FIG. 1 shows a gripping pliers according to the invention as a so-called water pump pliers in a plan view.
- the gripping pliers comprise a pliers handle 1 and a pliers bracket 2, each of which is provided with a grip section 3 or 4.
- the pliers handle 1 and the pliers bracket 2 intersect in a joint 5, which comprises a locking pin 6 and an elongated locking hole 7.
- the pliers handle 1 and the pliers bracket 2 each have a gripping jaw 9 or 10, which together form a pliers mouth.
- the pliers handle 1 is provided in the region of the joint 5 with a slot running parallel to the plane of the drawing in the illustration according to FIG. 1, through which the pliers bracket 2 is inserted, so that the pliers handle 1 engages around the pliers bracket 2 in the region of the joint 5 on both sides.
- FIG. 2 shows the gripping pliers according to FIG. 1 from the opposite side. The same components are provided with the same reference numbers.
- Locking pin 6 covered by a cover plate 11.
- the pliers joint 5 is shown in a cross section approximately along the line III-III of Figure 2.
- the pliers handle 1 slotted in this area has a left area 1a and a right area 1b, which cannot be seen in FIG. 1 or FIG. 2.
- the clamp bracket 2 is inserted between the left side 1a and the right side 1b of the clamp handle 1.
- the locking hole 7 is, as shown in Figures 1 and 2, elongated from a series of several cylindrical bores, which partially overlap. The centers of the bores are offset from one another by less than one bore diameter, so that there is a free passage between the respective bores, but the width is limited.
- the locking pin 6 is designed as a one-piece, rotationally symmetrical rotating part and has an outer, dome-shaped pressure region 15 which points outwards from the pliers joint 5. From the pressure area 15, a cylindrical section of smaller diameter 16 passes through a bore 17 of corresponding diameter into the gripper part 1a. There increases the diameter 18, which is displaceably seated in the locking hole 7 and in a bore 19 of corresponding diameter in the pliers handle part 1b.
- the locking pin 6 with its end face opposite the pressure region 15 is approximately flush with the outer surface that surrounds the bore 19.
- a concentric blind hole 20 is introduced from the front side of larger diameter into the locking pin 6 and ends shortly before the pressure region 15.
- the blind hole 20 is provided for receiving a coil spring 21, the total has approximately the length of the locking pin 6.
- the helical spring 21 is laterally guided in the blind hole 20 in the installed position over approximately two thirds of its length, which results in great security against unintentional kinking of the helical spring 21.
- the cover plate 11 acts as an abutment for the helical spring 21 opposite the locking pin 6.
- FIG. 3 shows the pliers joint 5 and in particular the locking pin 6 in its engagement position, in which the region 18 of larger diameter engages in the cylindrical bores of the locking hole 7.
- the joint 5 is immovable in the longitudinal direction of the locking hole 7, the locking pin 6 forming the bearing axis and pivot axis of the pliers joint 5.
- the user of the gripping pliers can press on the pressure region 15 of the locking pin 6 and move it in the direction of the cover plate 11 against the force of the helical spring 21.
- the pliers handle 1 can be moved relative to the pincer 2 because the area 16 of smaller diameter also fits through the narrowed areas of the locking hole 7.
- the locking pin 6 can be released and is pushed back into the locking or engagement position by the coil spring 21. This position is assumed as soon as a bore area of the locking hole 7 comes to coincide with the area 18 of larger diameter, the engagement being facilitated by a chamfer provided between the areas 16 and 18.
- this gripper consists of only five components.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Pivots And Pivotal Connections (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Greifzange, wie sie im Oberbegriff des Patentanspruches 1 näher gekennzeichnet ist.The invention relates to a gripper, as characterized in the preamble of claim 1.
Derartige Greifzangen sind aus der DE 921 80 69 U bekannt. Auf die diesem Stand der Technik entnehmbare, ausführliche und detaillierte prinzipielle Funktionsbeschreibung der Greifzange wird ausdrücklich verwiesen.Such gripping tongs are known from DE 921 80 69 U. We expressly refer to the detailed and detailed functional description of the gripping tongs that can be found in this prior art.
Dort ist aus der Figur 1 und der Figur 4 eine Greifzange bekannt, die aus einem Zangenstiel und einem Zangenbügel mit einem Rastloch besteht, die jeweils einen Griffabschnitt und eine dem Griffabschnitt gegenüberliegende Backe aufweisen, wobei der Zangenstiel und der Zangenbügel in einem Gelenk zueinander um eine Schwenkachse schwenkbar gelagert sind und das Gelenk eine Eingriffsposition und eine Verstellposition aufweist. Der Zangenstiel ist im Bereich des Gelenks mit einem Schlitz versehen, durch den der Zangenbügel hindurchgesteckt ist, so daß der Zangenstiel den Zangenbügel im Bereich des Gelenks beidseitig umgreift. Ein in Richtung der Schwenkachse gegen eine Feder manuell verlagerbares Einstellelement, das einen Raststift umfaßt, zur Einstellung der Eingriffsposition und der Verstellposition vorgesehen ist, wobei der Raststift in der Eingriffsposition die Lagerachse des Gelenks bildet.There is known from Figure 1 and Figure 4, a gripping pliers, which consists of a pliers handle and a pliers bracket with a locking hole, each having a handle section and a jaw opposite the handle section, the pliers handle and the pliers bracket in a joint to one another Pivot axis are pivotally mounted and the joint has an engagement position and an adjustment position. The forceps handle is provided with a slot in the area of the joint through which the forceps clip is inserted, so that the forceps handle engages around the forceps bar on both sides in the area of the joint. An adjusting element which can be manually displaced in the direction of the pivot axis against a spring and which comprises a locking pin is provided for adjusting the engagement position and the adjustment position, the locking pin forming the bearing axis of the joint in the engagement position.
Der Zangenstiel und der Zangenbügel grenzen im Bereich des Gelenks einen Raum ein, in den der Raststift entgegen der Vorspannung der Feder eindrückbar ist. Die Feder ist der Schwenkachse benachbart oder etwa koaxial zu der Schwenkachse angeordnet. Der sternförmige Querschnitt des profilierten Raststiftes greift in Längsrichtung des Rastloches formschlüssig in das Rastloch ein. Der Raststift ist in seine Eingriffsposition von einer ungeschützt angebrachten Blattfeder vorgespannt, die sich auf der dem Raststift gegenüberliegenden Außenseite des Gelenks befindet. Zum Verstellen der Maulweite der bekannten Greifzange ist der Raststift gegen die Kraft der Blattfeder in das Zangengelenk einzudrücken, so daß sein größerer Querschnitt aus dem Rastloch herausgedrückt wird. Sodann kann der Zangenbügel gegen den Zangenstiel im gewünschten Maße verstellt werden. Sobald der Raststift losgelassen wird, drückt die Blattfeder ihn in die Eingriffsposition mit dem Rastloch und die vorgesehene Maulweite der Greifzange wird fixiert.The pliers handle and the pliers bracket delimit a space in the area of the joint into which the locking pin can be pressed in against the bias of the spring. The spring is adjacent to the pivot axis or arranged approximately coaxially to the pivot axis. The star-shaped cross section of the profiled locking pin engages positively in the locking hole in the longitudinal direction of the locking hole. The locking pin is biased into its engagement position by an unprotected leaf spring, which is located on the outside of the joint opposite the locking pin. To adjust the mouth width of the known gripping pliers, the locking pin must be pressed against the force of the leaf spring into the pliers joint, so that its larger cross section is pressed out of the locking hole. Then the pliers bracket can be adjusted against the pliers handle to the desired extent. As soon as the locking pin is released, the leaf spring presses it into the engagement position with the locking hole and the intended jaw width of the gripping pliers is fixed.
Bei der bekannten Greifzange wird es als nachteilig empfunden, daß das Gelenk und die Rückstellfeder weitgehend ungeschützt gegen Verschmutzung und Beschädigung sind.In the known gripping pliers, it is felt to be disadvantageous that the joint and the return spring are largely unprotected against dirt and damage.
Ausgehend hiervon ist es Aufgabe der Erfindung, eine Greifzange zu schaffen, bei der das Gelenk einfach herzustellen und bei der Benutzung unempfindlicher ist.Proceeding from this, it is an object of the invention to provide gripping pliers in which the joint is simple to manufacture and less sensitive to use.
Diese Aufgabe wird von einer Greifzange mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a gripper with the features of claim 1.
Der Raststift weist einen ersten Bereich kleineren Durchmessers und einen zweiten Bereich größeren Durchmessers auf und der Zangenbügel weist ein längliches Rastloch auf, in dem der Raststift mit seinem ersten Bereich drehbar unverschieblich und mit seinem zweiten Bereich in Längsrichtung verschieblich eingreift. Ein Aufbau gemäß Anspruch 1 gewährleistet eine besonders einfache und damit zuverlässige Konstruktion.The locking pin has a first area of smaller diameter and a second area of larger diameter, and the tong clip has an elongated locking hole in which the locking pin with its first area is rotatably immovable and with its second area slidably engages in the longitudinal direction. A structure according to claim 1 ensures a particularly simple and therefore reliable construction.
Einen Schutz vor Beschädigung bildet der äußere Bereich des Zangengelenks, da der Zangenstiel und der Zangenbügel im Bereich des Gelenks einen Raum wenigstens teilweise umgrenzen, in den der Raststift entgegen der Vorspannung der Feder eindrückbar ist und der Feder mit ihrem dem Raststift entfernt liegenden Ende eine Deckscheibe als Widerlager zugeordnet ist, die den Raum soweit verschließt, daß sich ein Schutz gegen Verschmutzung, Beschädigung und/oder Verlieren der Feder ergibt, so daß die Zuverlässigkeit und Dauerhaltbarkeit der bekannten Greifzange verbessert wird.Protection from damage is provided by the outer area of the pincer joint, since the pincer handle and the pincer bracket at least partially delimit a space in the area of the joint, into which the locking pin can be pressed against the bias of the spring and the spring with its end remote from the locking pin a cover plate is assigned as an abutment, which closes the space to such an extent that protection against dirt, damage and / or loss of the spring results, so that the reliability and durability of the known gripping pliers is improved.
Federn, wie z.B. eine Schraubenfeder, eine Tellerfeder oder eine Elastomerfeder sind zur Vorspannung möglich und bieten ihre spezifischen Vorteile. Eine andere Ausführungsform der vor]iegenden Erfindung kann auch vorsehen, daß dem Raststift eine Schnappfeder zugeordnet ist, die der Vorspannung des Raststifts dient und den Raum nach außen verschließt. Mit dieser Anordnung wird die Abdichtung der Einstellvorrichtung nach außen erreicht, während die über einen Totpunkt hinweg federnde Schnappfeder gleichzeitig die Vorspannung des Raststifts übernimmt. Diese Anordnung erspart gegenüber der Vorspannung mittels Feder ein weiteres Bauteil, da die Schnappfeder die Funktion der Feder und der Deckscheibe einstückig übernimmt.Springs such as a coil spring, a plate spring or an elastomer spring are possible for preloading and offer their specific advantages. Another embodiment of the present invention can also provide that a snap spring is assigned to the locking pin, which serves to pretension the locking pin and closes the space to the outside. With this arrangement, the sealing of the adjusting device is achieved to the outside, while the snap spring resilient over a dead center simultaneously takes over the pretensioning of the locking pin. This arrangement saves another component compared to the preloading by means of a spring, since the snap spring takes over the function of the spring and the cover plate in one piece.
Eine Ausführungsform der vorliegenden Erfindung ist in der Zeichnung dargestellt.An embodiment of the present invention is shown in the drawing.
Es zeigen:
- Fig. 1:
- Eine erfindungsgemäße Greifzange in der Draufsicht auf das Gelenk;
- Fig. 2:
- die Greifzange gemäß Figur 1 von der gegenüberliegenden Seite; sowie
- Fig. 3:
- das Gelenk der Greifzange gemäß Figur 1 und 2 in einem Querschnitt.
- Fig. 1:
- A gripper according to the invention in a top view of the joint;
- Fig. 2:
- the gripping pliers according to Figure 1 from the opposite side; such as
- Fig. 3:
- the joint of the gripping pliers according to Figures 1 and 2 in a cross section.
Die Figur 1 zeigt eine erfindungsgemäße Greifzange als sogenannte Wasserpumpenzange in einer Draufsicht. Die Greifzange umfaßt einen Zangenstiel 1 und einen Zangenbügel 2, die jeweils mit einem Griffabschnitt 3 bzw. 4 versehen sind. Der Zangenstiel 1 und der Zangenbügel 2 kreuzen sich in einem Gelenk 5, das einen Raststift 6 sowie ein längliches Rastloch 7 umfaßt. Auf der den Griffabschnitten 3 bzw. 4 gegenüberliegenden Seite des Gelenks 5 weisen der Zangenstiel 1 und der Zangenbügel 2 je eine Greifbacke 9 bzw. 10 auf, die zusammen ein Zangenmaul bilden.Figure 1 shows a gripping pliers according to the invention as a so-called water pump pliers in a plan view. The gripping pliers comprise a pliers handle 1 and a pliers bracket 2, each of which is provided with a grip section 3 or 4. The pliers handle 1 and the pliers bracket 2 intersect in a joint 5, which comprises a locking pin 6 and an elongated locking hole 7. On the side of the joint 5 opposite the handle sections 3 and 4, the pliers handle 1 and the pliers bracket 2 each have a gripping jaw 9 or 10, which together form a pliers mouth.
Der Zangenstiel 1 ist im Bereich des Gelenks 5 mit einem in der Darstellung gemäß Figur 1 parallel zur Zeichenebene verlaufenden Schlitz versehen, durch den der Zangenbügel 2 hindurchgesteckt ist, so daß der Zangenstiel 1 den Zangenbügel 2 im Bereich des Gelenks 5 beidseitig umgreift.The pliers handle 1 is provided in the region of the joint 5 with a slot running parallel to the plane of the drawing in the illustration according to FIG. 1, through which the pliers bracket 2 is inserted, so that the pliers handle 1 engages around the pliers bracket 2 in the region of the joint 5 on both sides.
Die Figur 2 zeigt die Greifzange gemäß Figur 1 von der gegenüberliegenden Seite. Gleiche Bauteile sind mit gleichen Bezugsziffern versehen. Im Bereich des Gelenks 5 ist der in Figur 2 nicht sichtbare Raststift 6 von einer Deckscheibe 11 verdeckt.FIG. 2 shows the gripping pliers according to FIG. 1 from the opposite side. The same components are provided with the same reference numbers. In the area of the joint 5, that which is not visible in FIG. 2 is visible Locking pin 6 covered by a cover plate 11.
In der Figur 3 ist das Zangengelenk 5 in einem Querschnitt etwa entlang der Linie III-III aus Figur 2 dargestellt. Der in diesem Bereich geschlitzte Zangenstiel 1 weist einen linken Bereich 1a und einen rechten Bereich 1b auf, die in der Figur 1 bzw. der Figur 2 nicht zu sehen sind. Der Zangenbügel 2 ist zwischen die linke Seite 1a und die rechte Seite 1b des Zangenstiels 1 eingeführt. Das Rastloch 7 ist, wie in den Figuren 1 und 2 dargestellt, länglich gebildet aus einer Aneinanderreihung von mehreren zylindrischen Bohrungen, die sich teilweise überlappen. Die Mittelpunkte der Bohrungen sind um weniger als einen Bohrungsdurchmesser gegeneinander versetzt, so daß sich zwischen den jeweiligen Bohrungen zwar ein freier Durchgang befindet, der jedoch in der Weite beschränkt ist. Der Raststift 6 ist als einstückiges, rotationssymmetrisches Drehteil ausgeführt und weist einen äußeren, kalottenförmigen Druckbereich 15 auf, der von dem Zangengelenk 5 nach außen weist. Von dem Druckbereich 15 aus geht ein zylindrischer Abschnitt kleineren Durchmessers 16 durch eine Bohrung 17 entsprechenden Durchmessers in den Zangenstielteil 1a. Dort vergrößert sich der Durchmesser 18, der in dem Rastloch 7 sowie in einer Bohrung 19 entsprechenden Durchmessers im Zangenstielteil 1b verschieblich sitzt. Der Raststift 6 schließt mit seiner dem Druckbereich 15 gegenüberliegenden Stirnseite etwa bündig mit der äußeren Oberfläche, die die Bohrung 19 umgibt, ab.In Figure 3, the pliers joint 5 is shown in a cross section approximately along the line III-III of Figure 2. The pliers handle 1 slotted in this area has a left area 1a and a right area 1b, which cannot be seen in FIG. 1 or FIG. 2. The clamp bracket 2 is inserted between the left side 1a and the right side 1b of the clamp handle 1. The locking hole 7 is, as shown in Figures 1 and 2, elongated from a series of several cylindrical bores, which partially overlap. The centers of the bores are offset from one another by less than one bore diameter, so that there is a free passage between the respective bores, but the width is limited. The locking pin 6 is designed as a one-piece, rotationally symmetrical rotating part and has an outer, dome-shaped pressure region 15 which points outwards from the pliers joint 5. From the pressure area 15, a cylindrical section of smaller diameter 16 passes through a bore 17 of corresponding diameter into the gripper part 1a. There increases the diameter 18, which is displaceably seated in the locking hole 7 and in a bore 19 of corresponding diameter in the pliers handle part 1b. The locking pin 6 with its end face opposite the pressure region 15 is approximately flush with the outer surface that surrounds the bore 19.
Eine konzentrische Sacklochbohrung 20 ist von der Stirnseite größeren Durchmessers her in den Raststift 6 eingebracht und endet kurz vor dem Druckbereich 15. Die Sacklochbohrung 20 ist zur Aufnahme einer Schraubenfeder 21 vorgesehen, die insgesamt etwa die Länge des Raststiftes 6 aufweist. Die Schraubenfeder 21 ist in der Einbaulage auf etwa zwei Dritteln ihrer Länge in der Sacklochbohrung 20 seitlich geführt, was eine große Sicherheit gegen ein unbeabsichtigtes Abknicken der Schraubenfeder 21 ergibt. Als dem Raststift 6 gegenüberliegendes Widerlager für die Schraubenfeder 21 wirkt die Deckscheibe 11.A concentric blind hole 20 is introduced from the front side of larger diameter into the locking pin 6 and ends shortly before the pressure region 15. The blind hole 20 is provided for receiving a coil spring 21, the total has approximately the length of the locking pin 6. The helical spring 21 is laterally guided in the blind hole 20 in the installed position over approximately two thirds of its length, which results in great security against unintentional kinking of the helical spring 21. The cover plate 11 acts as an abutment for the helical spring 21 opposite the locking pin 6.
Die Figur 3 zeigt das Zangengelenk 5 und insbesondere den Raststift 6 in seiner Eingriffsposition, in der der Bereich 18 größeren Durchmessers in die zylindrischen Bohrungen des Rastloches 7 eingreift. In dieser Stellung ist das Gelenk 5 in Längsrichtung des Rastloches 7 unverschieblich, wobei der Raststift 6 Lagerachse und Schwenkachse des Zangengelenks 5 bildet.FIG. 3 shows the pliers joint 5 and in particular the locking pin 6 in its engagement position, in which the region 18 of larger diameter engages in the cylindrical bores of the locking hole 7. In this position, the joint 5 is immovable in the longitudinal direction of the locking hole 7, the locking pin 6 forming the bearing axis and pivot axis of the pliers joint 5.
Wenn die Maulweite der Greifzange gemäß Figur 1 und Figur 2 verstellt werden soll, so kann der Benutzer der Greifzange auf den Druckbereich 15 des Raststifts 6 drücken und diesen in Richtung der Deckscheibe 11 gegen die Kraft der Schraubenfeder 21 verlagern. Sobald der Bereich 18 größeren Durchmessers aus dem Zangenbügel 2 und insbesondere aus dem Rastloch 7 des Zangenbügels 2 herausgedrückt ist, kann der Zangenstiel 1 gegenüber dem Zangenbügel 2 verschoben werden, weil der Bereich 16 kleineren Durchmessers auch durch die verengten Bereiche des Rastlochs 7 hindurchpaßt. Sobald die passende Neuweite gefunden ist, kann der Raststift 6 losgelassen werden und wird von der Schraubenfeder 21 zurück in die Rast- bzw. Eingriffsposition gedrängt. Diese Position wird eingenommen, sobald ein Bohrungsbereich des Rastlochs 7 zur Deckung mit dem Bereich 18 größeren Durchmessers kommt,wobei das Einrasten durch eine zwischen den Bereichen 16 und 18 angebrachte Fase erleichtert wird.If the jaw width of the gripping pliers according to FIG. 1 and FIG. 2 is to be adjusted, the user of the gripping pliers can press on the pressure region 15 of the locking pin 6 and move it in the direction of the cover plate 11 against the force of the helical spring 21. As soon as the area 18 of larger diameter is pressed out of the pincer 2 and in particular out of the locking hole 7 of the pincer 2, the pliers handle 1 can be moved relative to the pincer 2 because the area 16 of smaller diameter also fits through the narrowed areas of the locking hole 7. As soon as the suitable new width is found, the locking pin 6 can be released and is pushed back into the locking or engagement position by the coil spring 21. This position is assumed as soon as a bore area of the locking hole 7 comes to coincide with the area 18 of larger diameter, the engagement being facilitated by a chamfer provided between the areas 16 and 18.
Es ist anhand der Zeichnung und der Beschreibung ersichtlich, daß diese Greifzange aus nur fünf Bauteilen besteht. Darüber hinaus ist das Gelenk mit dem Rastmechanismus einerseits durch den Raststift 6 selbst, andererseits durch die Deckscheibe 11 beidseitig umschlossen, so daß ein guter Schutz gegen Beschädigung und Verschmutzung gewährleistet ist. Durch die mögliche Verwendung einfach herzustellender Bauteile ist auch die Produktion einer erfindungsgemäßen Greifzange kostengünstig auszugestalten.It can be seen from the drawing and the description that this gripper consists of only five components. In addition, the joint with the locking mechanism on the one hand by the locking pin 6 itself, on the other hand by the cover plate 11 on both sides, so that good protection against damage and contamination is guaranteed. Due to the possible use of components that are easy to manufacture, the production of a gripping tongs according to the invention is also inexpensive.
- 11
- ZangenstielForceps handle
- 1a1a
- Zangenstielteil von 1Forceps handle part of 1
- 1b1b
- Zangenstielteil von 1Forceps handle part of 1
- 22nd
- ZangenbügelPliers bracket
- 33rd
- Griffabschnitt von 1Handle section from 1
- 44th
- Griffabschnitt von 2Handle section from 2
- 55
- Gelenkjoint
- 66
- RaststiftLocking pin
- 77
- längliches Rastlochelongated locking hole
- 8 98 9
- Greifbacke an 1Gripping jaw on 1
- 1010th
- Greifbacke an 2Gripping jaw on 2
- 1111
- DeckscheibeCover plate
- 12 13 14 1512 13 14 15
- Druckbereich von 6Print range from 6
- 1616
- dünner Abschnitt von 6thin section of 6
- 1717th
- Bohrung in 1aHole in 1a
- 1818th
- dicker Abschnitt von 6,thick section of 6,
- 1919th
- Bohrung in 1bHole in 1b
- 2020th
- Sacklochbohrung in 6Blind hole in 6
- 2121
- SchraubendruckfederHelical compression spring
Claims (5)
- Gripping pliers, comprising a top leg (1) and a bottom leg (2) with a gripping-width adjustment and locking aperture (7), each leg having a handgrip (3, 4), and at the opposite end a jaw (9, 10), where:a) The top leg (1) and the bottom leg (2) are mounted in a bearing so that they may be pivoted around a pivoting axis in a joint (5), and the joint displays an acting position and an adjusting position.b) The top leg (1) is furnished with a slot in the region of the joint (5), through which the bottom leg (2) is inserted, so that the top leg (1) encloses the bottom leg (2) on both sides in the area of the joint (5).c) A manually movable adjusting element (6), movable in the direction of the pivoting axis against a spring (21), which comprises a locking pin intended to set the gripping position and the adjusting position, where the locking pin (6) forms the bearing axis of the joint (5) when the pliers are in the gripping position.d) The top leg (1) and the bottom leg (2) form the borders of a space in the region of the joint (5), into which the locking pin (6) may be pressed against the pressure exerted by the spring (21), and,e) the spring (21) is placed adjacent to the pivoting axis or roughly coaxial to the pivoting axis;these being characterised by the fact that:f) The locking pin (6) displays a first section (16) of smaller diameter, which fits through a bore (17) of the appropriate diameter in the first part of the top leg (1a), and a second section (18) of a larger diameter, which fits and is able to slide in the adjustment and locking aperture (7) and in a bore (19) of the appropriate diameter in the second part of the top leg (1b), and,g) a disc-shaped cover (11) acting as the counter-bearing for the spring (21) opposite to the locking pin (6) and closing the space off to such an extent that a protection is produced against the entry of dirt, against damage and loss of the spring (21)
- Gripping pliers as per Claim 1,
being characterised by the fact that:
the locking pin (6) is, in its essentials, rotationally symmetrical. - Gripping pliers as per one of the previous Claims,
being characterised by the fact that:
The locking pin (6) with its first sector (16) can slide longitudinally and with its second sector (18) can engage to rotate but not to slide in the locking aperture (7). - Gripping pliers as per one of the previous Claims,
being characterised by the fact that:
A coil spring is provided as the spring (21), which is fitted at least in part into a bore (20) in the locking pin (6), which is parallel to its axis and and produced in the face side with the greater diameter (18). - Gripping pliers, comprising a top leg (1) and a bottom leg (2) with a gripping-width adjustment and locking aperture (7), each leg having a handgrip (3, 4), and at the opposite end a jaw (9, 10), where:a) The top leg (1) and the bottom leg (2) are mounted in a bearing so that they may be pivoted around a pivoting axis in a joint (5), and the joint displays an acting position and an adjusting position.b) The top leg (1) is furnished with a slot in the region of the joint (5), through which the bottom leg (2) is inserted, so that the top leg (1) encloses the bottom leg (2) on both sides in the area of the joint (5).c) A manually movable adjusting element (6), movable in the direction of the pivoting axis against a spring (21), which comprises a locking pin intended to set the gripping position and the adjusting position, where the locking pin (6) forms the bearing axis of the joint (5) when the pliers are in the gripping position.d) the spring (21) is placed adjacent to the pivoting axis or roughly coaxial to the pivoting axis;e) The top leg (1) and the bottom leg (2) form the borders of a space in the region of the joint (5), into which the locking pin (6) may be pressed against the pressure exerted by the spring (21), and,these being characterised by the fact that:f) The locking pin (6) displays a first section (16) of smaller diameter, which fits through a bore (17) of the appropriate diameter in the first part of the top leg (1a), and a second section (18) of a larger diameter, which fits and is able to slide in the adjustment and locking aperture (7) and in a bore (19) of the appropriate diameter in the second part of the top leg (1b), and,g) the spring is snap spring acting over a dead point, and this spring serves to pretension the locking pin (6) and closed the space to the outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19634082 | 1996-08-23 | ||
| DE19634082A DE19634082A1 (en) | 1996-08-23 | 1996-08-23 | Gripping pliers with adjustable jaw width |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0824996A1 EP0824996A1 (en) | 1998-02-25 |
| EP0824996B1 true EP0824996B1 (en) | 2001-09-19 |
Family
ID=7803488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97110983A Expired - Lifetime EP0824996B1 (en) | 1996-08-23 | 1997-07-02 | Wrench with adjustable opening |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0824996B1 (en) |
| AT (1) | ATE205765T1 (en) |
| DE (3) | DE19634082A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19741796A1 (en) * | 1997-09-22 | 1999-03-25 | Ver Beckersche Werkzeugfab | Push-through gripping pliers with adjustable jaw width |
| FR2786119B1 (en) * | 1998-11-19 | 2001-02-09 | Bost Garnache Ind | CLAMP WITH AT LEAST TWO ADJUSTMENT POSITIONS |
| DE19909224B4 (en) * | 1999-03-03 | 2012-11-08 | NWS Germany Produktion W. Nöthen e.K. | Assembly pliers with adjustable mouth width |
| DE10031343A1 (en) * | 2000-07-03 | 2002-01-17 | Wille Gmbh & Co | Gripping pliers with adjustable jaw width |
| DE20012818U1 (en) * | 2000-07-25 | 2001-03-01 | Wille Gmbh & Co | Gripping pliers with adjustable jaw width |
| DE102004022943B4 (en) * | 2004-05-11 | 2014-08-28 | Knipex-Werk C. Gustav Putsch Kg | Verstellzange |
| DE102005035846A1 (en) * | 2005-07-30 | 2007-02-08 | GM Global Technology Operations, Inc., Detroit | Pressure device for a clamping system |
| DE102006010285A1 (en) | 2006-03-02 | 2007-09-06 | Eduard Wille Gmbh & Co. Kg | Pliers with protected positive guidance |
| US8393083B2 (en) * | 2010-04-08 | 2013-03-12 | Pei-Ling Wu | Adjustable thinning scissors |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB103226A (en) * | 1916-04-13 | 1917-01-18 | John Henry Pickard | Improvements in Adjustable Wrenches. |
| DE805265C (en) * | 1948-11-04 | 1951-05-10 | Walter Gott Gesenkschmiede Und | Pliers |
| US4296655A (en) * | 1980-05-12 | 1981-10-27 | Joseph Tesoro | Slip joint pliers |
| GB8506017D0 (en) * | 1985-03-08 | 1985-04-11 | Stafford M A | Adjustable wrench |
| US4773288A (en) * | 1987-06-08 | 1988-09-27 | Jang Young H | Adjustable vise grip |
| DE9218069U1 (en) * | 1991-08-08 | 1993-07-29 | Knipex-Werk C. Gustav Putsch, 5600 Wuppertal, De |
-
1996
- 1996-08-23 DE DE19634082A patent/DE19634082A1/en not_active Ceased
- 1996-11-27 DE DE29620588U patent/DE29620588U1/en not_active Expired - Lifetime
-
1997
- 1997-07-02 EP EP97110983A patent/EP0824996B1/en not_active Expired - Lifetime
- 1997-07-02 DE DE59704644T patent/DE59704644D1/en not_active Expired - Fee Related
- 1997-07-02 AT AT97110983T patent/ATE205765T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE19634082A1 (en) | 1998-02-26 |
| EP0824996A1 (en) | 1998-02-25 |
| ATE205765T1 (en) | 2001-10-15 |
| DE59704644D1 (en) | 2001-10-25 |
| DE29620588U1 (en) | 1997-04-03 |
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