EP0790102A1 - Compact guide rail lock implement or plier with roughly and fine stepless parallel to upper gripper jaw shifting adjustment of lower gripper jaw with unishape guide block as well as with integrated measuring arrangement - Google Patents

Abstract

Compact lock tool or pliers with a parallel handle that overlaps with coarse and fine adjustment, with a molded guide slide, with integrated measuring devices and with interchangeable push-on jaws, whereby the upper lever, equipped with a pressed-in locking pin, has a flattened surface that faces the ends of the hand lever / pliers legs Molded-on I-guide profile-like side guide sheet with a material-specific guide slide and a lower jaw provided with a material-specific displacement joint wrap-around bracket acted directly and directly on the support and this along a guide and locking shaft consisting of jaw-side, front guide webs and rear, tool / pliers back-side lifting peg-displacement joint webs with the length graduation scale while maintaining the parallelism of both jaw gripping surfaces and while exerted torques, shear and other deformation forces by means of integrated sensor technology and data processing in / on the upper lever, lower jaw and / or plug-on jaws with or without attached tools, processed, read and or forwarded for external processing. <IMAGE>

Description

The invention relates to clamp-type, clamp-type or plier-type tools, in particular pliers for gripping, holding, clamping, pressing, squeezing, embossing, notching, punching, shearing, contouring, bending, folding, other shaping, material testing and Twisting, twisting, in particular screwing, with gripping surfaces of their jaws that are steplessly parallel to each other along their entire opening / closing path, whereby the fixed leg component with a slot milled out in the middle of the flat sides of the tool / pliers for penetration through a side guide sheet molded onto the lower jaw with guide slides formed on the lower lever and upper jaw and provided with an elongated guide and locking shaft as a guide element for the longitudinal displacement of the lower jaw with its I-guide profile-like molded parts, the guide blade is milled out in the middle between the flat sides of the tool / pliers aesthetic slot takes and where the upper lever designed as a loose leg with its inserted locking pin in the one-sided latched slot of the guide and locking shaft finds a series of articulated catches to form displaceable joints with which the upper lever with its short end directly supports the lower jaw Shifting forces are applied while the executives for the lower jaw are placed on the front, jaw-side webs of the elongated hole border by the sliding block-like flange part molded onto the side guide sheet, the guide carriage of the I-guide profile and by the running edges of the lower jaw.

Both front, cheek-side webs of the guide and locking shank, delimited by milling slot, lower jaw guide edges and elongated hole, correspond to the I-guide profile-like molded parts of the lower jaw and are straight, smooth on their long sides, while both rear, delimited by milling slot, elongated hole and anti-jamming support edges Actuator lever, pliers leg-side webs on the tool / pliers back within the elongated hole contour with their pliers leg-side notch depressions correspond to a locking pin with its flattening directed towards the ends of the actuating lever / pliers leg.
In that the detent recesses with their partial areas of their contour curved upwards towards the upper jaw give the detent pin a rotation during its rotation while pivoting the upper lever during the opening or closing process, albeit interrupted by the milling slot lying in the center of the flat sides of the tool and pliers, depending on the angle of the loose leg The upper lever on the above-mentioned curvature offers migratory support, the lower jaw is informed of its displacement directly by the short end of the upper lever additional displacement path, so that more than sufficient coverage - as can only be achieved with simply rounded catches - is shown by the upper lever during the fine adjustment pivoting.
With a balanced adjustment of the lever forces, the large displacement path of the lower jaw, which is achieved anyway, protrudes the shorter end of the upper lever far below the lower jaw and relieves pressure on the guide parts molded onto the lower jaw as well as the guide parts on which they slide, so that the pieces of material involved in the parallel guidance could be made relatively short and lightweight.

Thanks to lower guide force components when the lower jaw is subjected to direct sliding forces, the elongated hole has moved closer to the lower jaw's guideway due to smaller cross-sections of the front, jaw-side webs;
Although tight, inexpensive guidance with a large distance between the slide of the lower jaw on its leading edge was achieved, this had to be accepted. that the elongated hole in its lower, into the lower lever area for receiving the locking pin was angled with a large jaw adjustment in the direction of the upper lever, but this does not mean any further increase in width due to the widening of the guide and locking shank required for the anti-jam thickening on the upper lever.

In order to maintain the connection between the upper lever and the lower jaw in both lower jaw displacement directions, but especially for the retention of the locking pin in the detent belonging to the rough setting selected, a bracket is formed on the lower jaw for the approximately half-way encirclement of the displacement joint area of the upper jaw, against the inner edge of which the The upper lever is supported by a spring element.

Since the lower jaw gripping surface maintains its parallelism to the upper jaw gripping surface during the longitudinal movement of the lower jaw along the guide and locking shank, its distance from the upper jaw gripping surface is used to determine its dimensions after detecting an object, by marking on the lower jaw with a graduation scale on the flat side of the / one of the front, Cheek-side webs similar to a slide gauge.

Forces to be applied when rotating a gripped object are recorded via the bending stress in the upper lever by changing the electrical resistance in a bonded or otherwise attached strain gauge with connected signal processing and with display unit and / or connected printer / documentation option.

With adapter or plug-on jaws, sensitive surfaces of the objects to be machined are spared, and profile wrapping jaws are used for further work, with which special twisting or screwing elements are detected.

Further adapter / plug-on jaws are with profile, squeeze, Bending, embossing, shaping, shearing, penetrating or other tools are equipped, which are equipped for forming and / or for the purpose of generating or changing an electronically processed signal or another, also sensory part for measuring quantity acquisition, whereby a connected processor unit further processing, for example for workpiece processing or material testing, is made possible by reading and / or documenting quantitative displays during use.
It is also possible to accommodate such sensor and signal processing units directly in the lower jaw, although the area of exposure to them is relatively large due to the shorter end of the upper lever and a special mechanism must direct the force exerted by the upper lever onto the sensor.

The functioning of the tool / pliers according to the invention is such that when the hand lever / pliers leg pivoting opens, the upper lever releases the locking pin used in it against the persistence tendency by spring pressure on the lower jaw surrounding bracket from the upper lever from one of the notches in the series of detents. Then the lower jaw is roughly adjusted by moving the upper lever relative to the lower lever either by contacting a workpiece or by selecting a work area in terms of size, along with sliding the cylindrical rounding of the locking pin on the straight, smooth web side in the slot to one of the catches of the displacement joint.
With the swiveling of the hand lever / pliers legs for grasping a workpiece for processing or diametrical measurement, the locking pin is screwed into the pre-selected or adjacent detent by rotating the locking pin with the upper lever swiveling; the flat side of the locking pin is rolled on the curvature of the detent directed towards the brooks and thus the entire upper lever portion of the displacement joint is raised at the same time as the lever force displacement of the lower jaw, so that an increased coverage of the lower jaw adjustment range from neighboring ones Rest out is used.
When the jaws rest on the workpiece, when it is crushed or otherwise processed, the displacement path covered by the lower jaw can be quantified with the path of its marking along the graduation scale.
It also follows that when the strain gauge attached to the upper lever is stretched, there is a change in its electrical resistance, which is electronically processed to quantify the torque produced.
A piezoelectric element is acted upon by the shorter end of the upper lever via a mechanism which extends over the entire area which is covered by the upper lever end on the underside of the lower jaw. The mechanism required for this can include a beam on two supports or other constructions - such as spring-loaded triangular sheet metal.
Snap-on jaws with gentle coverings, profile-encompassing or shaping tools and tools for material analysis are as identical as possible for the top and bottom jaws and are therefore made to be plugged on from the side.

Durchgesteckten Wasserpumpenzange " und deren Verlagerungsgelenktechnik kombiniert und verfeinert wurde, so daß bei klarer Zuordnung von Funktionen prinzipiell nur ein Einzelteil, der Kurzstiel = materialeinheitlich geformte Unterbacke mit Oberhebel, differenziert und unumgänglich zerteilt wurde. Nur auf diese Art konnten dauerhaft exakte Führung zwecks Parallelität der Backengreifflächen und optimale Überdeckung von Unterbackenverstellung, bezogen auf verlagerte Gelenkstellen in benachbarten Rastenvertiefungen erreicht werden.The object of the present invention is to provide such tools / pliers which, while observing the size class-appropriate dimension, offer the greatest possible adjustment or wrench widths for parallel jaw gripping surfaces with lightness, cost minimization and various measuring options.
This complex task has been solved above all by observing existing manufacturing technology, in that an I-type profile guide is formed on the lower jaw for longitudinal displacement of the lower jaw and is evident with the technology of

Push-through water pump pliers "and their displacement joint technology were combined and refined, so that with clear assignment of functions, in principle only a single part, the short handle = lower jaw shaped in the same material with upper lever, differentiated and inevitably divided. This was the only way to achieve permanent, precise guidance for the parallelism of the jaw gripping surfaces and optimum coverage of the lower jaw adjustment, based on the displaced joint points in adjacent notch recesses.

There are many different types of tools, especially pliers with a parallel handle or parallel gripping surface guidance, but due to different, sometimes less favorable initial considerations, they are very expensive and therefore too complex, too cumbersome and too heavy.
On the other hand, according to the teaching of the present invention, based on a simplified construction and proven technology, the path to lightweight, large jaw reach, significant cost reduction and multiple expansion of tool functions is shown, on which, with clearly visible kinematics, there should be no fear of overuse or dysfunction of lever or guide areas.
According to German patent application, file number 195 23 678.5, a parallel guide tool with an I-guide profile molded onto the lower jaw, received and guided in a milling slot parallel to the tool / pliers flat side, is known, but the sliding block-like one corresponding to the flange of the I-profile Guide carriage as a pin with a round, semicircular or elliptical / non-circular profile cross-section was pressed into the side guide sheet corresponding to the high bridge, whereby this guide pin, which was not made of the same material, in practice led to a completely unsatisfactory width across flats and, with a somewhat more heavy-weight design, to dysfunction, otherwise the lower jaw was only indirectly supported by the shorter end of the upper lever, so that due to the high load on the guide parts unsatisfactory service life, therefore less successful requirement of parallel guidance was to be feared.
The teaching of the latter invention is for the present Invention with their improvement taken over in full by the force introduction of the shorter end on the upper lever is now carried out directly and immediately into the lower jaw in order to minimize the executive components. The relevant task area is solved in such a way that, without unduly lengthening the shorter end of the upper lever, it only finds its contact surface under the lower jaw by combining the latch series perforation with the guide perforation and thus structurally closer the linear series of the articulated joints the sliding edges of the lower jaw was brought up and punched.
There is no need to fear a reduction in the direct introduction of force into the lower jaw, which relieves the guiding parts, even if, with a very large jaw spacing, the part of the multiple displacement joint catch series set back towards the ends of the hand lever / pliers limbs in the lower, angled area of the elongated hole with the locking pin in place The deepest in the slot or, in the case of rolling to the rearmost area of the lowest notch recess, is used because sufficient overlap length for the shorter end of the upper lever on its contact surface under the lower jaw has been taken into account and, in each shifting position, only lever part support to relieve the lower jaw on the closing path of the tool / pliers is carried out according to the present invention.

In addition to the aforementioned constructive and practical merging of two elongated holes with different functions, what is new is the aforementioned creation of lifting notches for improved detent position range coverage, along with the mutual adaptation of the guide slide and upper lever joint area, including the material surrounds surrounding these parts that these do not interfere with each other colliding even with extreme bending; This is made possible by integrally molding the sliding block-like guide slide corresponding to the flange of the I-profile guide with the side guide sheet on the lower jaw.

Furthermore, the angling of the elongated hole contour of a tool / pliers with application areas mentioned at the beginning is a novelty.
Another novelty is the border that half-encloses the displacement joint area of the upper lever by means of the lower jaw, which can be displaced longitudinally on the guide and locking shaft, by means of its molded parts in order to maintain the connection between the upper lever and the lower jaw, with a spring element holding the shorter end of the upper lever in such a way against the lower edge of the lower jaw, that the detachment of the locking pin can only be released with the intention of the operator.
Constructively and technically conceivable alternatives of maintaining equivalent upper lever and lower jaw connection, in order to counteract in particular the uncontrolled displacement of the lower jaw to the upper jaw, are such connections with spring contact which are unprotected on the jaw side of a tool / such pliers according to the invention or with expensive cover would be appropriate. Also, the introduction of the locking pin, with its flattened obliquely downward toward the ends of the tool hand levers / pliers limbs, is an advantageous embodiment of the present invention and a novelty compared to known tools / pliers with simpler tasks and with completion of the functions required according to the invention is to achieve the articulation displacement after releasing the locking pin from one of the detents at a smaller swivel angle with an additional displacement path for the lower jaw on its closing path, by the point of contact / the contact line of the locking pin flattening on the curvature of the detents directed towards the upper jaw, with the tool hand levers then being pivoted / the pliers leg moves in the direction of the I-flange-like guide carriage in the elongated hole area located above, and an additional lifting effect is thus communicated to the upper lever and the lower jaw acted upon by it . The lifting effect achieved in this way has a comparatively minor effect, but it is a welcome extension of the adjustment coverage of the individual coarse and fine adjustment widths of the lower jaw from notch to notch, so that on the one hand the shorter end of the upper lever during its power stroke on the lower jaw under engagement between the molded parts of the lower jaw and on the other hand the locking pin itself, and consequently also the overall width of the guide and locking shaft would not have to be made excessively large.
Novel and representing an advantageous embodiment of the present invention is the attachment of a length measuring graduation scale on the guide and locking shaft, on which a marking on the lower jaw is pushed in a straight line and in the same plane in the manner of slide gauges.
Known tools or pliers with parallel guidance of one or the other jaw to fulfill the above-mentioned tasks are less suitable for the attachment of the above-mentioned, caliper-type measuring devices, because the surfaces required for scales are either partially covered and slid off by movable parts or would also be attached at different levels , the latter circumstance resulting in parallax errors.
Furthermore, the integration of some areas of sensor technology, combined with processor and documentation technology, represents multiple innovations and advantageous embodiments of the present invention in tools and pliers of the type described at the beginning; other branches of tool technology namely already offer mature developments of the aforementioned type, only in the case of predecessors of the present invention there was hardly any accommodation / mounting option for sensor and signal processing technology.
Ultimately, the equipment of tools / pliers of the type described at the beginning with side-sliding jaws, which profile filler pieces for jaws with burner holes have an innovation and an advantageous embodiment of the present invention in many respects, since jaws carried out in this way fulfill the task of pliers with less demanding requirements Take lightness with you and also fit into the relevant dimension classes.

• Fig.1 ein /-e erfindungsgemäßes /-e Kompaktschloßwerkzeug / -zange in Seitenansicht mit den Konturen der wesentlichen Bestandteile, wobei die Zuordnung von Bezugzeichen mit Strich- und Strichpunktlinien unterstützt wurde,
• Fig.2 einen vergrößerten Abschnitt von Fig.1, wobei Einzelheiten deutlicher erkennbar sind, insbesondere Backen mit Aufsteckbacken und die Sensortechnik mit ihrer Krafteinleitungsmechanik sowie ein Federelement mit seiner Befestigung am Oberhebel und seiner, damit auch der des Oberhebels, für die Sollstellung relevante Federabstützung gegen den Haltebügel an der Unterbacke in Ruhe und
• Fig.3 einen vergrößerten Abschnitt der Seitenansicht von Fig.1 und ähnlich Fig.2 mit gesonderter Darstellung von Aufsteckbacken mit Füllstücken für profilierte, mit Brennerloch ausgestattete Backen sowie mit angeformtem Werkzeug und mit Sensorbestücktem Gegenüber, einschließlich dessen Beaufschlagungsmechanismus.

In the following, the invention is explained in more detail with reference to a drawing showing only one embodiment; it shows

• 1 shows a compact lock tool / pliers according to the invention in side view with the contours of the essential components, the assignment of reference numerals being supported with dash and semicolon lines,
• 2 shows an enlarged section of FIG. 1, details being more clearly recognizable, in particular jaws with slip-on jaws and the sensor technology with its force introduction mechanism, and a spring element with its attachment to the upper lever and its spring support relevant for the desired position against the desired position the bracket on the lower jaw at rest and
• 3 shows an enlarged section of the side view of FIG. 1 and similar to FIG. 2 with a separate illustration of plug-on jaws with filler pieces for profiled jaws equipped with a burner hole, as well as with a molded tool and with a sensor-equipped counterpart, including its loading mechanism.

Claims (9)

Compact lock tool or pliers with infinitely variable adjustment of the lower jaw covering the gripping surfaces with coarse and fine adjustment and parallel to the upper jaw, with molded guiding slide and with measuring devices , that the upper jaw (Fig. 1 to 3, OB), guide and locking shaft (Fig. 1 to 3, FRSch) with a straight, smooth contoured edge on the inside of the jaw (Fig. 1, BIK) and on the hand lever side with notches The inner boundary (Fig. 1, RIK) of the elongated hole (Fig. 1 to 3, LL) and the lower lever (Fig. 1, UH) are formed in a material-uniform workpiece, which is mainly in the area of the guide and locking shank (Fig. 1 to 3 , FRSch) throughout, in the areas of the upper jaw (Fig. 1 to 3, OB) and lower lever (Fig. 1, UH) root, due to the manufacturing process, parallel and centered to the flat sides of the tool / pliers with a milling slot (Fig. 1 to 3, milling cutter) for penetration through molded parts of the lower jaw (Fig. 1 to 3, UB), such as the side guide sheet (Fig. 1 to 3, SFBl) and guide slide (Fig. 1 to 3, Fschl) as well as through the upper lever joint area ( Fig.1, OHG) and for the purpose of their inclusion and displacement is provided, wherein in the upper lever (Fig.1 to 3, OH) a locking pin (Fig. 1 to 3, RSt) is pressed, the flattening (Fig.1, ABFl) is directed to the free ends of the upper and lower lever (Fig.1, UH and OH). Compact lock tool or pliers according to claim 1.
characterized, that the lower jaw (Fig. 1 UB) has material-uniform molded parts, the molded part designed as a side guide sheet (Fig. 1, SFBl) having a sliding block-like thickening, which acts as a guide carriage in the slot (Fig. 1 to 3, LL) with the lower jaw and their sliding edges together I-profile-like form fit with the front, cheek-side webs (Fig.1, BStg) of the guide and locking shaft (Fig.1, FRSch) and the formed part designed as a holding bracket (Fig.1 HBü) in a wide arc around the point of engagement and the articulated area of the upper lever together with the inserted locking pin on the one hand with lateral guidance in the milling slot (Fig.1, FräSchl) Longitudinal displacement and application of force to the lower jaw is held, on the other hand, on its inner curve, there is a support surface for a spring element (Fig. 1, Fe) attached to the upper lever, so that the lower jaw is moved in both directions along the guide and locking shaft only in a controlled manner when the upper lever is actuated and the upper lever can only be swiveled under pressure against the spring element (Fig. 1, Fe), so that the locking pin can only be released from one of the catches of the displacement joint and turned into one of the other catches. Compact lock tool or pliers according to claim 1 and 2 or one of these , that the lower jaw (Fig. 1 to 3, UB) offers the shorter end of the upper lever (Fig. 1 to 3, OH) a contact / engagement surface (Fig. 1, A), which cheek-side in front of the straight, smooth inner contour (Fig. 1, BIK) of the lantern hole (Fig. 1, LL), especially in front of the guideways of the sliding edges on the lower jaw, so that when the lower jaw is subjected to direct forces by means of a shorter end of the upper lever, the parts used for guiding the lower jaw are subjected to the required load the lower jaw are relieved, the contact / contact surface (Fig. 1, A) with its longitudinal extension taking into account sufficient free displacement for the shorter end of the upper lever when it is pivoted about the displacement joint. Compact lock tool or pliers according to claim 1, 2 and 3 or one of these , that holes made in the guide and locking shank (Fig. 1, FRSch) as an elongated hole (Fig. 1, LL) on the cheek side are straight and smooth for longitudinal guidance of the lower jaw (Fig. 1 to 3, UB) by means of a guide slide (Fig. 1, FSchl) asymmetrical and with an angled extension (Fig.1, V) with space for placement and rotation of the locking pin (Fig.1, RSt) on the detents, which are set back in relation to the otherwise straight line arrangement of the detents in the direction of the ends of the tool lever / pliers legs , is carried out so that the inner boundary contours of the elongated hole (Fig. 1, LL) provide a space in which two different, correlatingly approaching or moving away, different parts move by the part of the side guide sheet thickened to form the guide carriage (Fig. 1, FSchl) (Fig. 1, SFBl) also uses the space in the elongated hole (Fig. 1, LL), which, when the gripping surfaces of both jaws (Fig. 1, OB and UB) lie against each other, is above the right-angled to the lower jaw guideway on the front, jaw-side Webs (Fig. 1, BStg) is circumscribed by the elongated hole contour, by means of which a geometrically favorable moment was achieved and that the side guide sheet (Fig. 1, SFBl) with its thickening designed as a guide carriage (Fig. 1, FSchl) together has a boundary contour which avoids the range of motion of the upper lever and that the upper lever (Fig. 1, OH) has one in its joint area Has boundary contour, which avoids the movement space of the side guide sheet (Fig. 1, SFBl) with molded guide slide. Compact lock tool or pliers according to claim 1 to 4 or one of these , that the tool lever / pliers legs - on the one hand in the lawn sequence of the elongated hole (Fig.1, LL) incorporated individual notches (Fig.1, R) are provided with a circular arc piece directed towards the tool / pliers back, which not only the radius of the locking pin (Fig. 1, RSt) with a fit, but is also offset further than the mere reception of the locking pin towards the back of the tool / pliers, so that the locking pin does not direct any bending force component during the closing process of the tool / pliers into the material that the elongated hole ( Fig.1, LL) surrounds and that the support curves of the notches of all notches (Fig.1, R) for the locking pin (Fig.1, RSt), on which he hits with its flattening, such curvature directed towards the upper jaw (Fig. 1, OB), that the locking pin is raised from its support while rotating with pivoting of the upper lever (Fig. 1, OH) with inclusion of the entire upper lever and it was given to him in this way Stroke movement of the lower jaw (Fig. 1, UB) communicates the displacement of the lower jaw as a displacement path during the lifting exercise by its rotation on the catch of the displacement joint, whereby additional opening and closing travel of the lower jaw is achieved, which benefits the overlap of the closing path sections from catch to catch; thus all notches (Fig. 1, R) are to be considered as components of a lifting peg shift joint. Compact lock tool or pliers according to claim 1 to 5 or one of these , that the guide and locking shaft (Fig. 1 to 3, FRSch) has a graduation scale (Fig. 1 and 2, TSK) on the front, cheek-side web (Fig. 1 and 2, BStg), on which the lower jaw (Fig. 1 to 3, UB) during their longitudinal displacement along a marking (Fig. 1 and 2, M) along the distance from the lower to the upper jaw (Fig. 1 to 3, UB and OB), thus also the dimension of one between the corresponding Gripping surfaces located object is displayed. Compact lock tool or pliers according to claim 1 to 6 or one of these , that on the upper lever (Fig.1 and 2. OH) a strain gauge (Fig.1 and 2, strain gauge) is attached so that the elastic deflection of the upper lever under the effect on the strain gauge by changing its electrical resistance produces measurement signals generated, which also in integrated processor with reading unit (Fig. 2, Prom and LCD) or with interface (Fig. 2, Schn) for data transfer for the purpose of documentation / printing. Compact lock tool or pliers according to claim 1 to 7 or one of these , that in the contact / attack or force application area of the Upper lever (Fig. 1 and 2, OH) to the lower jaw (Fig. 1 and 2, UB) a piezoelectric element / piezoceramic sensor (Fig. 2 and 3, Se) is introduced into the lower jaw, this sensor with a processor, Reading unit and interface for data transmission for the purpose of documentation / printing is connected and a power transmission mechanism (Fig. 2 and 3, Kü) directs the lever force to the sensor. Compact lock tool or pliers according to claim 1 to 8 or one of these , that the upper and lower jaws (Fig. 1 to 3, OB and UB) are provided with holes (Fig. 1 to 3, Bo) into which the mounting pins (Fig. 1 to 3, AB) belonging to the mounting jaws (Fig. 1 to 3, click into place, that positive locking jaws (Fig. 1 to 3, AB) are attached to the flat sides as protective jaws with gripping surfaces parallel to the surface, as profile enclosing jaws, as jaws with molded tools or as jaws with integrated sensors (Fig. 1 to 3, Se) and that the plug-on jaws (Fig.3, ABFü) have filler pieces for such tools or pliers according to the invention, which are manufactured with jaw profile recesses or burner holes.

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