tongs

Abstract

The invention relates to a pair of pliers (1) having two plier legs (3 and 4) which intersect the axis of the hinge pin (x) in a hinge pin (2), wherein one plier leg (4) is considered movable and the other plier leg (3) is considered fixed, wherein on one side of the hinge pin (2) a handle section (8 and 9) is formed and on the other side of the hinge pin (2) a plier jaw (5 and 6) is formed which cooperates as a plier mouth (7), wherein the movable plier leg (4) has a longitudinal slit (13) with a toothing (16) and the hinge pin (2) which is accommodated in a housing (12) can be moved out of the toothing engagement and the movable plier leg (4) is passed through the fixed plier leg (3), further the longitudinal slit (13) has an extension (S) which extends transversely to the orientation of the handle side of the plier legs (3 and 4) when the pair of pliers (1) is closed. In order to construct a pair of pliers of the aforementioned type in an operationally and functionally reliable manner it is suggested that the toothing (16) can be passed by depressing the hinge pin (2) in order to adjust the plier mouth opening (w), wherein the passed plier leg (4) has a longitudinally extending coverage area (U), wherein the passed plier leg (4) is covered on both sides by the passed plier leg (3), further the coverage area (U) is essentially at right angles to the adjustment direction (r) of the longitudinal slit (16) in relation to the hinge pin (2), the coverage area has a width (g) which corresponds to 0.5 times or more the maximum adjustment (f), the coverage area has a length (d) which corresponds to 2 times or more the maximum adjustment (f).

Description

Technical Field

[0001] The present invention relates to a pair of pliers having two plier legs intersecting the axis of a hinge pin, one plier leg being considered movable and the other plier leg being considered fixed, wherein a handle section is formed on one side of the hinge pin and a jaw forming a jaw that engages as a clamping jaw is formed on the other side of the hinge pin, wherein the movable plier leg has a longitudinal slit with teeth, and the hinge pin located in the receiving portion is movable disengaged from the teeth and the movable plier leg passes through the fixed plier leg, and furthermore, the longitudinal slit has an extension that extends laterally to the handle side of the plier leg when the pliers are closed.

[0002] The present invention also relates to a pair of pliers having two pivotable legs about a rotation axis and a jaw consisting of two jaws, wherein the jaw has opposing working surfaces, namely a first working surface and a second working surface, which, when viewed from the free end of the jaws toward the rotation axis, are provided with teeth along most of their length, wherein the tips of the tapered teeth are oriented toward the rotation axis, and the tips of the other tapered teeth are oriented toward the free end of the jaws.

[0003] The present invention also relates to a pair of pliers having two pivotable legs about a rotation axis and a jaw, wherein the jaw has a working surface provided with teeth, and the tapering teeth have an orientation toward the rotation axis in terms of the orientation of their tooth tips in the working surface, wherein each tooth also has an angle bisector, wherein the angle bisector originates from the tooth tip and extends away from the jaw to the free end of the jaw, or to the end of the jaw on the hinge side.

[0004] Furthermore, the present invention relates to a pair of pliers having two legs and jaws pivotable about a rotation axis, wherein the jaws have a working surface provided with teeth, and the tapering teeth have an orientation toward the rotation axis in terms of the direction of their tooth tips in the working surface. Further, in a view where the rotation axis is shown as a dot, a through-plane extends through the jaws, and the through-plane is shown as a line in the view. The through-plane is generated in such a way that, when the jaws are set as closed as possible, the through-plane extends perpendicularly to the longitudinal centerline of the longitudinal slot for receiving an adjustable hinge pin, or extends such that its rotation axis extends within the through-plane, wherein, or with respect to the longitudinal slot... In this regard, the intersection of the longitudinal mid-plane and the longitudinal centerline is selected, or the orientation of the through-plane is selected such that during the closing of the jaws, at a specific opening angle, the free end of the jaws and the opposing working surfaces are initially brought into contact. Furthermore, the tooth tip terminates at different vertical distances from the through-plane, and furthermore, the tooth has an angle bisector that forms an acute angle with the through-plane. In a portion of the tooth, the acute angle is formed between the perpendicular line and the axis of rotation in the region where the angle bisector extends within the jaws, while in another portion of the tooth, the acute angle is formed between the perpendicular line and the free end of the jaws.

[0005] The present invention also relates to a pair of pliers having two legs and jaws pivotable about a rotation axis, wherein the jaws have working surfaces with teeth, the tapered teeth having an orientation toward the rotation axis, wherein a profile line can be formed by the tooth tips, wherein sub-segments of the profile line also form an angle with each other, and wherein, in the jaw open position, the profile lines are opposite to each other. Background Technology

[0006] Pliers of the aforementioned type are disclosed, for example, in US 5,996,450 A or US 5,752,419 A. The pliers known from US 5,752,419 A allow for adjustment of the opening angle, particularly in the closed position of the jaws. This is achieved by first pivoting the jaw legs to the largest possible opening position, disengaging the hinge pin from the toothed engagement. Then, preferably, the movable jaw legs, along with the hinge pin, move together in the toothed longitudinal slot. Finally, the jaw legs are rotated back to re-establish toothed engagement between the longitudinal slot and the hinge pin. Accordingly, geometric displacement of the hinge pin axis is achieved within the longitudinal slot. With respect to the pliers known from US 5,996,450 A, the opening angle cannot be fixed.

[0007] Furthermore, pliers with a snap-fit, depressable hinge pin for adjusting the jaw width are known, see WO 2008 / 049850 A1 (US 2010 / 0064861 A1), wherein, when the pliers are closed, their longitudinal slits extend toward the movable jaw legs. Such pliers may also have toothed working surfaces in the jaw area. DE 20 2013 101 985U1 discloses, for example, such pliers. In conventional combination pliers, this toothed jaw is often also referred to as a burner hole. For pliers where the jaw width cannot be adjusted, the hinge pin axis can be given by the rotation axis of the hinge bolt. Summary of the Invention

[0008] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to design the aforementioned type of pliers in an operationally and functionally advantageous manner.

[0009] According to the first inventive concept, a possible solution to the technical problem is given by a pair of pliers, wherein the teeth can be passed over by pressing down the hinge pin to adjust the jaw opening, wherein the through-jaw legs (preferably movable jaw legs) have a longitudinally extending coverage area in which the through-jaw legs are covered on both sides by the through-jaw legs (preferably fixed jaw legs), and furthermore, the coverage area extends substantially at right angles to the adjustment direction of the hinge pin in the longitudinal slot, the coverage area having a width equivalent to 0.5 times or more of the maximum adjustment, and the coverage area having a length equivalent to 2 times or more of the maximum adjustment.

[0010] According to the proposed technical solution, an ergonomically advantageous operation is achieved by employing a technically reliable pliers solution. In the preferred technical solution, to disengage the teeth, the hinge pin is moved to the release position along the direction of the hinge pin axis. Preferably, this load for moving the hinge pin is intentionally generated only, for example, by pressing down using the thumb, especially the thumb of the hand holding the pliers. There is no need to pivot the pliers legs to the largest possible opening position to adjust the jaw opening.

[0011] In the closed position of the pliers, more preferably when the jaw opening is set to the minimum, the covered area can be seen.

[0012] In a top view of the pliers where the longitudinal axis of the hinge pin is shown as a dot, if the area covered by the pliers legs that are passed through does not extend congruently, the edge profile of the largest coverage of the pliers legs that are passed through represents the coverage area. This edge profile also serves as a substantially imaginary edge profile over the length of the coverage area, which can be composed of an upper edge profile and a lower edge profile that have the largest coverage, respectively.

[0013] Furthermore, preferably, the penetration area of ​​the pierced jaws may be made of the same material as the jaws and the gripping area of ​​the pierced jaws.

[0014] The hinge pin, which can be operated by pressing down, preferably has corresponding teeth that can engage with the teeth of the elongated hole. In this case, two or more, preferably three or more, for example up to five or eight, for example four, six or seven different locking positions can be achieved along the longitudinal extension of the toothed elongated hole, the locking positions having a corresponding number of adjustable jaw openings of the pliers.

[0015] Due to the overlapping position selected in the transition area between the pliers section and the handle section where the hinge pin is housed, the hinge pin can be manipulated in an ergonomically advantageous manner to disengage or engage the teeth, thanks to the preferred slender structural form. The resulting slender design in the covered area also enables good operability of the pliers, for example, in hard-to-reach areas.

[0016] The coverage area is more preferably generated in the jaw leg area that extends substantially in a straight line. In this case, it is preferably limited in the longitudinal direction, i.e. perpendicular to the adjustment direction, by the widening portion formed in the two jaw legs. Therefore, it is preferably limited at one end by the widening portion for forming the jaw head with an articulated design, and preferably at the other end by the outwardly oriented bend of the jaw leg for forming the operating area.

[0017] The coverage area is preferably provided with a width that is substantially constant over the described length range. Deviations (decreases or increases) in the width dimension may be as high as, for example, 2% of the average width dimension over the length range of the coverage area, but are in any case preferably less than 10%.

[0018] The width of the coverage area may be 0.5 to, for example, 2 times the adjustment degree, and the length may be, for example, 2 to, further for example, 5 or 10 times the adjustment degree.

[0019] In particular, the jaw leg sections located in the transition region between the jaw area accommodating the hinge pin and the handle section preferably extend in the same direction, especially relative to a corresponding centerline centered between edges extending substantially perpendicular to the adjustment direction of the hinge pin. Therefore, according to a preferred embodiment, the centerlines of the jaw leg sections can extend substantially parallel to each other. In this invention, forming acute angles, for example, from 1 or 2 degrees to, for example, 10 or 15 degrees, should be understood as substantially in the same direction.

[0020] With regard to the exemplary maximum adjustment of the clamp legs relative to each other along the longitudinal seam of about 10 mm, the transverse length of the clamp leg segments extending substantially in the same direction as viewed from the longitudinal seam can be given, for example, about 20 mm to about 30 mm.

[0021] A feasible solution to the aforementioned technical problem is that two working surfaces each have teeth in their orientation from the free end of the jaws toward the axis of rotation, the tooth tips of which are oriented toward the axis of rotation, followed by other teeth in the same working surface, the tooth tips of which are oriented toward the free end of the jaws, and vice versa, wherein, further, the teeth are arranged in pairs with opposite orientations on the first or second working surface.

[0022] Based on the proposed tooth orientation, torque is advantageously transmitted to a workpiece, such as a circular pin, clamped between jaws. The workpiece can be held in one working area by one or more teeth facing the free end of the jaws, and in another working area by one or more teeth facing the axis of rotation. More preferably, torque can be transmitted to the workpiece in a modified manner, wherein the workpiece is clamped in one working area in a transition region between two sets of teeth with different orientations, and in another working area, if necessary, by tooth tips pointing in the selected direction of rotation.

[0023] An angle bisector relates to the angle between two tooth surfaces when viewed through the jaws of a tooth along the longitudinal slit. In this observation, the tooth surfaces preferably extend in a straight line. However, the tooth surfaces may also have convex or concave curvature. In the direction of curvature, the geometrically straight line from the tooth tip to the tooth root plays a decisive role in the angle bisector. If the tooth root is not given, the deepest point between two adjacent teeth can also be used as the tooth root. If, starting from the tooth tip, there is first a straight section of the tooth surface, and then this straight section transitions to a curved section, then only this straight section of the tooth surface can be used to define the angle for the angle bisector.

[0024] For pliers including jaws with teeth, a feasible solution to achieve this purpose is that, viewed from the free end of the working surface of the jaws toward the axis of rotation, a first set of teeth is first constructed in the first working surface of the jaws, wherein the corresponding angle bisector of the teeth extends obliquely from the tooth tip away from the jaws to the free end of the jaws, followed by a second set of teeth, wherein the corresponding angle bisector extends obliquely to the hinged end of the jaws, followed by a third set of teeth, wherein the corresponding angle bisector again extends obliquely to the free end of the jaws.

[0025] The aforementioned first group is not necessarily the absolute first group of jaws. In any case, a second and third group according to the aforementioned technical solution may be adjacent to the defined first group.

[0026] Starting from the free end of the working surface of the jaws away from the axis of rotation or the free end of the jaws, preferably at least three sets of teeth are arranged sequentially along the longitudinal direction of the first working surface, wherein adjacent sets have different orientations of the teeth in terms of the extension and inclination of the angle bisector.

[0027] More preferably, corresponding sets of teeth are also constructed on the opposite second working surface, and preferably, corresponding sets of teeth are also constructed in groups opposite to the sets of teeth on the first working surface. For circular or polygonal components held by the pliers, a pair of opposing positions is specifically given when the corresponding teeth or sets of teeth act simultaneously on the component. Regarding the total length of the penetrating plane through the jaws, see also the following description; for example, a component with the largest possible diameter may be given, whose diameter is equivalent to one-quarter or one-half of the total length.

[0028] Relative to a plane, for example, relative to the longitudinal mid-plane of the pliers, but in any case relative to the penetrating plane of the jaws, an acute angle may also be generated in the jaw region between the angle bisector and the perpendicular to that plane. An acute angle may also be generated in the jaw region relative to the penetrating plane between the angle bisector and the perpendicular to that plane. In this case, the penetrating plane, such as in the pliers known in the aforementioned technical solutions, may be oriented perpendicular to the longitudinal centerline of the longitudinal seam, wherein the hinge pin is displaceable to adjust the jaw width, or the penetrating plane may extend such that the axis of rotation extends within that plane. Furthermore, this orientation of the penetrating plane may be selected such that, during the closing of the jaws, the first contact of the working surface construction in the region of the free end is achieved in the penetrating plane.

[0029] The penetrating plane may coincide with the previously described longitudinal intermediate plane, but it may also be different from it.

[0030] The geometric longitudinal centerline is given along the adjustment direction of the hinge pin in the longitudinal seam. Its perpendicular line can intersect the longitudinal centerline within the extension of the longitudinal seam, and also in the region of an imaginary extension of the longitudinal centerline protruding beyond the boundary of the longitudinal seam, with the penetrating plane extending along this perpendicular line.

[0031] The longitudinal seam can also be bent and extended, and the hinge pin can be adjusted within this longitudinal seam. In this case, the longitudinal centerline is still curved, typically forming the circumference of a circle with a relatively large diameter. In this case, the intersection point achieves perpendicularity to the tangent relative to the longitudinal centerline.

[0032] In this case, the free end is the region of the jaws, which is preferably formed on the side opposite to the axis of rotation, at the center of the jaws extending longitudinally along the jaws. Furthermore, this free end can be defined by other working areas of the jaws that abut the toothed jaws of the pliers in the closed position, towards the jaw tips. These other working areas can also be toothed, but alternatively, they can be formed, for example, with a smooth surface.

[0033] The initial contact of the working surfaces at the free ends of the jaws can be achieved, for example, by the direct contact of the tooth tips of the two jaws with each other. In this case, the jaws can also be closed simultaneously using this initial contact. This initial contact can also be achieved solely through a first, simultaneous contact between one or more teeth of the two working surfaces, spaced a certain distance apart in the direction of penetrating the plane.

[0034] During the closing of the jaws, if we assume that the penetrating plane is already against a working surface, that working surface can move the penetrating plane to a certain extent until it makes the required contact with another working surface at the same time as the first contact. In this case, the position of the penetrating plane seems to be frozen in the imagination in the following considerations. References to the penetrating plane should always be understood in conjunction with the frozen state.

[0035] The aforementioned or first contact relates to the teeth of the jaws, which are located in the front region of the jaws associated with the free end of the jaws. This region is preferably the first half of the total length corresponding to the free end, relative to the total length of the penetrating plane through the jaws.

[0036] The initial contact through the penetrating plane can also be achieved by the envelope surface of the teeth, which in the aforementioned view is represented as a contour line connecting the tooth tips in a straight line extension. This point may particularly occur in the region of the free end of the toothed working surface, where the teeth are engaged with each other in the jaws closed position. In this case, the initial contact through the penetrating plane is achieved correspondingly through the working surface in the region of the free end before reaching the closed position, wherein, further, the contact of the relevant working surfaces in the penetrating plane can also be achieved in a point-like or area-like manner.

[0037] First, without considering the penetrating plane, preferably, when viewed from the free end of the working surface of the jaws toward the axis of rotation, a first set of teeth is first constructed in the first working surface of the jaws, wherein an acute angle is given between the perpendicular line and the axis of rotation, followed by a second set of teeth, wherein an acute angle is given between the perpendicular line and the free end of the working surface of the jaws, followed by a third set of teeth, the acute angle of which is given between the perpendicular line and the axis of rotation.

[0038] Advantageously, at least two variations in tooth orientation are produced relative to the longitudinal extension of the working face, wherein the orientation of the first group of teeth described by the angle bisector—viewed toward the jaws—tends toward the axis of rotation, the orientation of the second group of teeth tends toward the free end of the working face, and the orientation of the third group of teeth tends toward the axis of rotation.

[0039] The value of the acute angle can be from about 0.5 degrees to about 60 degrees or greater, preferably from about 1 degree to about 50 degrees, wherein, in one group, there is preferably an angle range, for example, between about 5 degrees and about 25 degrees or between about 30 degrees and about 45 degrees, and in another group, for example, there is an angle range between about 3 degrees and about 20 degrees or between about 25 degrees and about 50 degrees.

[0040] On the opposing working surfaces, two sets of teeth are also constructed, which have the tooth orientation variations described above. In this case, one set of the opposing second working surfaces may also include multiple teeth, making it opposite to multiple sets (e.g., two sets) of the first working surfaces.

[0041] By selecting the orientation of the tooth sets on the two working faces, different action zones can be created in the jaws. Through these action zones, for example, in one zone, using one or two adjacent sets of correspondingly oriented teeth, the workpiece, such as a bolt, can be advantageously rotated to the left, and by offsetting the other zone from that zone, rotation to the right can be advantageously achieved. The alternating orientation of the proposed tooth sets allows for the transmission of greater torque compared to known solutions. A certain degree of locking between the teeth and the workpiece can be achieved in a manner advantageous to the operator, wherein, during rotation, under the same applied force, a greater force than known solutions can be transmitted through the teeth on the working faces before disengaging from the frictional engagement acting on the workpiece.

[0042] The important aspect regarding torque transmission and the direction of rotation is that the opposing teeth on the two working surfaces act on the workpiece.

[0043] Furthermore, regarding pliers including jaws with teeth, according to another inventive concept, the solution to the technical problem lies in that, relative to the described contour lines, each contour line in any case has two adjacent sub-segments, and the sub-segments form an angle of 170 degrees or less up to, for example, 100 degrees with respect to each other toward the jaws, and the sub-segments are opposite to a sub-segment of another contour line, and the sub-segments form an angle of 170 degrees or more up to, for example, 190 degrees with respect to the jaws, and each contour line contains two sub-segments, which form an angle of 190 degrees or more with respect to each other when viewed in the same direction.

[0044] The proposed layout and orientation of tapered teeth achieve a jaw design that is advantageous in terms of operational technique. Therefore, preferably, the contours of the two working surfaces are generally elongated in a sinusoidal shape, correspondingly having troughs and crests relative to the side view of the jaws, as well as inflection points formed between the troughs and crests. Relative to the penetrating plane, the troughs of the contours of one working surface are preferably opposite the crests of the contours of the other working surface.

[0045] As described above in conjunction with the angular orientation of the teeth, this advantageously creates a region within the jaws that is, for example, suitable for acting on bolts or pins in a left-hand rotational manner, and, when viewed along the longitudinal extension of the pliers, is offset from another region used for acting on, for example, bolts or pins in a right-hand rotational manner.

[0046] The aforementioned contour lines are preferably generated by straight lines connecting the tooth tips in a side view or cross-section of the jaw region, in which the geometric pivot of the jaw legs is shown as a point.

[0047] Regarding angle bisectors and contour lines, the described features can also be simultaneously realized on the jaws.

[0048] In other known types of pliers, for example, in particular combination pliers (see, for example, WO 2017 / 134074 A1 or US 2019 / 00392141, for example, see...) Figure 11 In the case of a water pump clamp (see WO 2008 / 049850 A1 or US 2010 / 0064861 A1), the design features of the teeth on the toothed working surface of the jaws can also be realized.

[0049] Therefore, according to a preferred technique for adjusting the jaws by passing through and being passed through, during the adjustment of the jaw segments relative to the handle side from a smaller jaw opening to a larger jaw opening width, a larger overlap area of ​​the jaw segments can be achieved at least initially. The overall reduction in the area of ​​the jaw segments preferably provides good support for the arms relative to each other at every jaw width position. This improves the operability of the pliers. In the case of a larger jaw opening, the narrowing effect in this area is preferably even enhanced. According to a preferred technique, when viewed in a direction transverse to the centerline of the jaw segments, the degree of overlap can increase with the increase of the jaw opening. Accordingly, in the case of a larger jaw opening, the jaw segments form an increased support surface relative to each other. It is advantageous to adjust the larger jaw opening by applying finger pressure to both jaws in the overlap area of ​​the jaws, thereby assisting in displacement towards each other.

[0050] If the jaw opening exceeds the adjustable minimum jaw opening, the overlapping area of ​​the jaw legs may further decrease with further jaw leg displacement to occupy a larger jaw opening. Therefore, after releasing the lock in the elongated hole, as the jaw legs are displaced, the jaws can be moved further from the position with the minimum jaw opening to the position with the maximum possible jaw opening, passing through the jaw opening area, where the maximum overlapping area of ​​the jaw legs is achieved.

[0051] In a preferred embodiment, at least a portion of the jaw segments overlap in each jaw-open position of the pliers.

[0052] When adjusting to a larger jaw opening, and particularly when adjusting the pliers from the smallest jaw opening towards a larger jaw opening, the width of the pliers preferably decreases first in the overlapping region from the closed jaws. In this case, with the largest possible overlap, the minimum width of the pliers is given in the region of the aforementioned jaw legs.

[0053] The width in such a narrow region is more preferably much smaller in each jaw opening (especially relative to the jaw closing position) than the width viewed in the same direction in the jaw region and, more preferably, in the jaw leg region. Therefore, the maximum width in the aforementioned jaw leg region may, for example, be approximately 0.3 to 0.8 times the width in the jaw or jaw region, and if necessary, 0.4 to 0.6 times that width. Thus, the described waisted structure is achieved in the jaw leg region.

[0054] In another technical solution, the fixed clamp legs may have recesses suitable for pressure-operated hinge pins, wherein the axis of the hinge pin is preferably eccentrically arranged relative to the geometrically central axis of the recess. The recesses provide advantageous finger support, particularly thumb support, for further advantageous manipulation of the hinge pin. Preferably, the hinge pin is moved linearly toward the bottom of the recess to disengage the teeth.

[0055] In this case, the hinge pin axis can be offset relative to the central axis of the recess along the adjustment direction of the jaws. This creates a misalignment relative to the aforementioned longitudinal mid-surface. The misaligned arrangement of the hinge pin axis advantageously contributes to the overall slender structure of the pliers.

[0056] The jaws may also have a working area equipped with teeth. These teeth may be of the type described above.

[0057] The working area may be deepened relative to the longitudinal extension of the jaws toward the top of the jaws, so as to maintain an opening in the forward-looking direction of the jaws when the pliers or jaws are closed. Accordingly, a clamping opening on the end side is provided in the area of ​​the jaws, which preferably has a toothed profile. Thus, for example, an object can be clamped from the front with the proposed pliers in an operatively advantageous manner, and, for example, the object can be rotated.

[0058] Regarding the specific design of the jaws, particularly for advantageous torque transmission, according to an improved scheme, a fourth set of teeth may be provided adjacent to the third set of teeth relative to the design and layout of the teeth on the first working surface, wherein the corresponding angle bisectors of the teeth extend obliquely to the end of the hinge side of the jaws.

[0059] Therefore, the acute angle between the angle bisector and the perpendicular line relative to the plane, when viewed in the direction of the jaws, is given between the free end of the perpendicular line and the working surface of the jaws.

[0060] Compared to the third group of teeth, the orientation of the fourth group of teeth is further altered so that four groups of teeth are preferably arranged within the length of the first working surface. When viewed toward the jaws, the tooth tips of the first and third groups of teeth preferably tend toward the axis of rotation, while the tooth tips of the second and fourth groups of teeth preferably tend toward the free end of the first working surface.

[0061] Two groups of teeth that are generally oriented in the same direction are separated along the longitudinal direction of the working area by groups of teeth that tend to be oriented in opposite directions.

[0062] The acute angles of teeth in groups tending to face the same direction, such as the first and third groups, or the second and fourth groups, can be substantially the same, or can vary within substantially the same range of values. In this regard, the acute angles of two groups of teeth with substantially the same direction can also have different ranges of values, for example, one group has an acute angle range of approximately 5 degrees to approximately 25 degrees, and the other group has, for example, an acute angle range of approximately 30 degrees to approximately 45 degrees.

[0063] The ranges of values ​​may also partially overlap. Thus, one range of values ​​may be, for example, between about 5 degrees and about 35 degrees, while the range of values ​​for another set of teeth in the same direction may be, for example, between about 30 degrees and about 45 degrees.

[0064] Groups of teeth with a specific orientation of angle bisectors or angular orientation relative to a plane are preferably opposite each other. In this case, relative to the vertical projection of the group onto the described plane, one group may completely or only partially cover, for example, one-third or more, up to, for example, two-thirds or more, of its opposite group. A group of teeth whose tooth tips on the first working surface tend toward the axis of rotation may correspondingly be at least partially opposite to a group of teeth whose tooth tips on the second working surface also tend toward the axis of rotation.

[0065] Regarding the opposing positions, the tooth tips can be staggered relative to the vertical line and across the plane. The teeth on the two working faces can be arranged in a "spaced" manner, wherein, when viewed perpendicularly to the plane, the tooth tips of the teeth on the first working face are arranged substantially towards the direction of the tooth root between the two teeth on the second working face.

[0066] In a further technical solution, a first set of teeth is provided in the second working surface of the jaws, wherein the bisector of the corresponding angle of the teeth extends obliquely from the tooth tip away from the jaws to the free end of the jaws, and then a second set of teeth is provided, wherein the corresponding bisector of the angle extends obliquely to the hinged end of the jaws.

[0067] When viewed from within the jaws, the acute angles of the first group of the second working surfaces caused by the tilt can be given between the vertical line and the axis of rotation, and, for the second group of the same working surfaces, are given between the vertical line and the free end of the working surface of the jaws.

[0068] The second group of teeth may preferably have two groups of teeth, the first group having a smaller inclination or a smaller acute angle, and the second group having a larger inclination or a larger acute angle.

[0069] The second set of teeth preferably corresponds to the end region of the second working surface facing the axis of rotation. A preferred layout is achieved by further subdividing this second set into two groups, wherein the group with a smaller inclination or a smaller acute angle may face the transition region of the first group of the second set to the second working area, while the first group is substantially facing the free end.

[0070] A group may include one, two or more teeth.

[0071] The value of the larger acute angle in the second group can also preferably be approximately 1.5 to 100 times the value of the smaller acute angle in the first group, and more specifically, approximately 3 to 50 times that value.

[0072] Therefore, the acute angle of the first group of the second group in the area of ​​the second working surface can range from approximately 0.5 degrees to a maximum of 10 degrees, and further from approximately 1 degree to approximately 5 degrees. The acute angle of the adjacent second group can range from approximately 10 degrees to approximately 45 degrees, and further from approximately 15 degrees to approximately 40 degrees.

[0073] In particular, regarding the teeth, the angle bisector can also coincide with the perpendicular in the transition region between two consecutive sets, so that there is no angle between them, or a zero-degree angle is formed.

[0074] According to a preferred improvement, a circular pin can be held in the front region of the jaws facing the free end of the jaws and in the rear region facing the axis of rotation by one or more teeth on the first or second working surfaces oriented in opposite directions. Different sets of teeth engage with the circular pin in the front and rear regions, respectively. Furthermore, the circular pin can be held in the rear region by two teeth corresponding to one of the opposing working surfaces, with their tips extending in opposite directions, and in the front region by two teeth corresponding to one of the opposing working surfaces, with their tips extending in opposite directions.

[0075] For possible diameters of this type of circular pin, refer to the aforementioned implementation scheme.

[0076] The aforementioned teeth on the working surfaces used for double clamping of workpieces such as circular pins in the front and rear regions are more preferably oriented in opposite directions. Therefore, the teeth on the first working surface corresponding to the rear region may be further inclined in the same direction as the teeth on the second working surface corresponding to the front region.

[0077] Furthermore, if the round pin has a jaw opening diameter of approximately 10 degrees for the aforementioned clamping requirements of the round pin in the front or rear region, then the round pin can be double-clamped in any case.

[0078] Furthermore, this clamping can be achieved at other jaw angles, such as when the jaw opening is as high as 30 or 45 degrees. Preferably, this clamping is also achieved in an open position of less than 10 degrees, which is further related to the overall design of the jaws, for example, until the jaws are fully closed. In this case, the corresponding jaw opening is related to the diameter of the workpiece (e.g., a round pin) and the clamping position in the jaws, and further to whether the workpiece is clamped in the front region of the jaws away from the hinge or in the rear region near the hinge. Arranging a round pin in the front region of the jaws may require a smaller jaw opening compared to arranging a round pin of the same diameter in the rear region.

[0079] Advantageously, the orientation of the tooth tip can be preset by different lengths of the tooth surface of the corresponding tooth, wherein, in the orientation toward the axis of rotation, the longer tooth surface is constructed on the side of the tooth tip away from the axis of rotation, and, in the orientation of the tooth tip toward the free end of the jaw, the longer tooth surface is constructed on the side of the tooth tip away from the free end of the jaw.

[0080] In a view where the axis of rotation is shown as a point, the tooth surface extends from the tooth tip to the tooth root on both sides of the tooth tip, and the tooth root has a transition portion to the next tooth and its tooth surface.

[0081] Furthermore, the ranges or multiples given above and below also include all intermediate values ​​with respect to the disclosed content, particularly steps of 1 / 10 of the corresponding size, and may be dimensionless if necessary. For example, 0.5 to 3 times the data also includes 0.6 to 3 times, 0.5 to 2.9 times, 0.6 to 2.9 times, etc.; 170 degrees or less of disclosed content also includes 169.9 degrees or less; 5 degrees to 25 degrees of disclosed content also includes 5.1 degrees to 25 degrees, 5 degrees to 24.9 degrees, 5.1 degrees to 24.9 degrees, etc. The disclosed content can be used to define the above range limitations from below and / or above, but as an alternative or supplementary option, it can also be used to disclose one or more specific values ​​within the given range. Attached Figure Description

[0082] The invention is described below with reference to the accompanying drawings, which only illustrate embodiments. A component described with reference to only one embodiment is described as such in all other embodiments if it is not replaced by other components due to the features disclosed in that embodiment. In the drawings:

[0083] Figure 1 A perspective view of a first embodiment of the type of pliers;

[0084] Figure 2 A view of the pliers;

[0085] Figure 3 for Figure 2 Side view of the pliers indicated by the middle arrow III;

[0086] Figure 4 This is a rear view of the pliers;

[0087] Figure 5 for Figure 2 A magnified view of region V in the image;

[0088] Figure 6 for Figure 5 The end view of the pliers indicated by the middle arrow VI;

[0089] Figure 7 for Figure 6 An enlarged view of region VII in the image;

[0090] Figure 8 for Figure 2 A significantly enlarged view of region VIII in the image;

[0091] Figure 9 For corresponding Figure 8 A magnified view of the jaws of the clamps;

[0092] Figure 10 for Figure 9 A magnified view of region X in the image, where only one of the jaws is shown with a dotted line;

[0093] Figure 11 For corresponding Figure 10 The diagram shows only one jaw, indicated by a dashed line;

[0094] Figure 12 for Figure 9 An enlarged view of region XII, in which only one of the jaws is shown with a dotted line;

[0095] Figure 13 For corresponding Figure 12 However, only a dotted line is used to show a schematic diagram of another jaw;

[0096] Figure 14 According to Figure 4 Enlarged cross-sectional view of line XIV-XIV in the middle;

[0097] Figure 15 For basically corresponding Figure 14 The view of the hinge pin used to release the latch;

[0098] Figure 16 According to Figure 3 A cross-sectional view of line XVI-XVI in the diagram; its minimum jaw opening with respect to the pliers;

[0099] Figure 17 According to Figure 16 A cross-sectional view showing the average jaw opening of the pliers;

[0100] Figure 18 For corresponding Figure 16 Another cross-sectional view of the maximum jaw opening of the pliers.

[0101] Figure 19 To correspond to when clamping the workpiece in the front jaw area Figure 5 A schematic diagram.

[0102] Figure 20 To correspond to when clamping the workpiece in the rear jaw area Figure 19 A schematic diagram.

[0103] Figure 21 This is a view of the pliers in the second embodiment.

[0104] Figure 22 for Figure 21 A magnified view of region XXII.

[0105] Figures 23 to 26 A schematic diagram of the basic shape of an alternative jaw. Detailed Implementation

[0106] First, combine Figures 1 to 4 The pliers 1, in the form of installation pliers and / or clamps, are illustrated and described.

[0107] exist Figure 21 and Figure 22 The image shows 1, a conventional combination pliers.

[0108] The pliers 1 has two jaws 3 and 4 that intersect the hinge pin axis x in the hinge pin 2. In the embodiment shown, jaw 3 is a fixed jaw and jaw 4 is a movable jaw that can pivot relative to the fixed jaw 3 about the hinge pin axis x to open and close the jaws 7 formed between the jaws 5 and 6 of the jaws 3 and 4.

[0109] Jaws 5 and 6 are formed on jaw legs 3 and 4 on one side of hinge pin 2, while the portions of jaw legs 3 and 4 opposite to jaws 5 and 6 form handle portions 8 and 9.

[0110] according to Figures 1 to 13 In the first embodiment shown, the fixed clamp leg 3 may be designed in a fork-like manner in the area where it intersects with the movable clamp leg 4, so as to surround the movable clamp leg 4 through the fixed clamp leg 3 in the area where the slot 10 is created for this purpose.

[0111] The hinge pin 2 is accommodated in the hole-like receiving portion 12 in the forked section 11 of the fixed clamp leg 3, and passes through the longitudinal slot 13 in the intersection area of ​​the movable clamp leg 4, and through the hole-like opening 14 (further formed in the axial extension of the hole-like receiving portion 12) in another forked section 15 of the fixed clamp leg 3.

[0112] The longitudinal slit 13 has an extension S along the longitudinal centerline 50, which, when the clamps 1 are closed, for example... Figure 2 As shown, the extension preferably extends laterally to the handle side of the clamp legs 3 and 4, and more preferably generally laterally to the longitudinal extension L of the clamp 1.

[0113] The longitudinal slot 13 is also preferably provided with teeth 16 along at least one longitudinal edge, more preferably along both longitudinal edges, for engaging with corresponding teeth 17 provided on the outer side of the wall of the hinge pin 2.

[0114] The corresponding tooth 17 extends from the bottom 19 of the hinge pin in the receiving portion 12 of the fork-shaped section 11, and extends along the direction of the hinge pin axis x within approximately half the extension of the hinge pin 2, thereby, for example... Figure 14 and Figure 16 In the basic orientation of the hinge pin 2 shown in the figure, a toothed engagement is formed between the hinge pin 2 and the longitudinal slot 13.

[0115] In this basic orientation, the hinge pin 2 is preferably loaded by a spring, for example, by a leaf spring 18. In this case, the leaf spring 18 is also preferably anchored in the region of the forked section 11 of the fixed clamp leg 3, and its free end acts on the bottom 19 of the hinge pin, so that the hinge pin 2 is stopped and restricted in the direction of tooth engagement.

[0116] In this basic orientation, the hinge pin 2, in the case of forming a disc-shaped operating protrusion 20, further protrudes from the axially outward opening edge of another opening 14 constructed in the fork-shaped section 15.

[0117] The leaf spring 18 is preferably arranged such that it extends from a support area given at one end on the corresponding end of the hinge pin, from the bottom 19 of the hinge pin toward a covered area, and is fixed to a fixed clamp leg in the covered area.

[0118] A dome-shaped recess 39 may be formed around the aforementioned opening 14 in the forked section 15. When operating the hinge pin 2, this recess 39 is preferably used in the form of a thumb recess.

[0119] The central axis y of the recess parallel to the hinge pin axis x is preferably eccentrically arranged relative to the hinge pin axis x, wherein, more preferably, the misalignment is achieved along the adjustment direction r given by the orientation of the jaws 7 through the longitudinal slot 13. This produces a misalignment degree 'a', which can be approximately 0.3 to 0.8 times the pin diameter, and further approximately 0.5 times the pin diameter (see [reference]). Figure 2 ).

[0120] To change the jaw opening w between jaws 5 and 6, the hinge pin 2 first overcomes the restoring force of the leaf spring 18 to move axially, thereby disengaging from the teeth of the longitudinal slot 13. For this purpose, it is also preferable that the hinge pin 2 can withstand pressure loads in the area of ​​the operating protrusion 20, for example, by thumb operation. Figure 15 In the axially moved position of the hinge pin 2 shown in the figure, the tooth engagement is disengaged, and the movable jaw 4 can move linearly relative to the fixed jaw 3 in the adjustment direction r.

[0121] In the moved position of the hinge pin 2, the bottom 19 of the hinge pin can move in the direction of the hinge pin axis x to a position spaced a certain distance from the surface corresponding to the fork-shaped section 11. The hinge pin 2 correspondingly protrudes from the receiving portion 12 by means of its end facing away from the operating protrusion 20 (see...). Figure 15 ).

[0122] Figures 16 to 18 Pliers 1 of a first embodiment with different adjusted jaw opening degrees w are shown, wherein, Figure 16The minimum possible jaw opening w is shown as an example. Figure 18 This shows the maximum possible jaw opening w, while Figure 17 This indicates the middle position.

[0123] In another technical solution of the first embodiment, viewed along the longitudinal extension L of the pliers 1, plier leg sections 21 and 22 are provided between the intersecting fork-shaped sections 11 and 15 and the handle sections 8 and 9 of the fork-shaped sections, particularly as shown in... Figure 16 The pliers shown in the closed position have a generally uniform orientation. In the closed position, the pliers leg segments 21 and 22 preferably extend substantially parallel to each other, more preferably parallel to the longitudinal intermediate surface E that centrally passes through the jaws 7. This longitudinal intermediate surface E evenly passes through the two pliers legs 3 and 4, particularly in the region of the pliers leg segments 21 and 22.

[0124] Viewed along the longitudinal extension of the pliers 1, the plier leg sections 21 and 22 are essentially defined by widenings created by opposing sections, for example, by the bend regions 40 or 41 on the handle side, and by the widenings on the opposing side by the plier head 42 forming longitudinal slots 13 or forked sections 11 and 15 (see in particular). Figure 16 ).

[0125] In the closed jaw position, the edges 43 and 44 defining the jaw leg section 21 are preferably perpendicular to the longitudinal slit 13 or the adjustment direction r, more preferably parallel to each other, and also preferably parallel to the other edges 45 and 46 of the jaw leg section 22.

[0126] In coverage area U (see [link to relevant documentation] for clarity) Figures 16 to 18 In the shaded area, the movable jaw 4 that passes through is covered on both sides by the fixed jaw 3 that passes through. The coverage is basically set in the area of ​​the jaw segments 21 and 22.

[0127] The overall length d of the coverage area U along the longitudinal extension L of the clamps 1 is approximately equivalent to 2 to 4 times the possible adjustability f produced by the hinge pin 2 transverse to the longitudinal direction of the clamp legs 21 and 22 in the longitudinal slot 13. It is located between the edge 45 of the movable clamp leg 4 and the edge 44 of the fixed clamp leg 3 (see...). Figure 16 ), or depending on the specific jaw width, it is located between the edge 43 of the fixed jaw 3 and the edge 46 of the movable jaw 4 (see Figure 17 and 18 The width g in the coverage area U of the hinge pin 2 can be approximately 0.5 to 2 times the possible adjustability f produced by the hinge pin 2 in the longitudinal slot 13 transverse to the longitudinal direction of the clamp leg segments 21 and 22. Furthermore, the width g of the coverage area can be approximately 1.5 to 4 times its associated length d.

[0128] In any case, the width g of the coverage area U can initially increase from a smaller jaw opening w to a larger jaw opening w, for example... Figure 16 The minimum jaw opening w shown is... Figure 17 The adjustable jaw opening shown in the diagram, in its intermediate position, provides at least substantially complete coverage of the jaw segments 21 and 22. Conversely, in all jaw opening positions of the pliers 1, the length d is at least substantially the same with respect to the corresponding jaw closing position.

[0129] As the coverage width g increases, the width h of the pliers 1 in the regions of the jaw segments 21 and 22 decreases accordingly. Therefore, it is preferable to achieve a minimum width dimension in the jaw-closed position, which is approximately 0.4 to 0.6 times the length d, and more specifically approximately 0.5 times the length. When the jaw segments 21 and 22 only partially cover the jaws, the maximum possible width h may also be approximately 0.6 to 0.9 times the aforementioned length d of the jaw segments 21 and 22, and more specifically approximately 0.75 times the aforementioned length.

[0130] Generally, the slender structure of the pliers 1 is formed particularly in the regions of the pliers leg segments 21 and 22. The pliers leg segments 21 and 22 preferably retract after the jaws 5 and 6 are constructed during each jaw width adjustment. During each jaw width adjustment, the width dimension k of the pliers 1, viewed perpendicularly to the longitudinal mid-plane E in the regions of jaws 5 and 6 (in terms of the jaw closure position), is at least 1.3 times to about 2 times the width h, viewed in the same direction, in the regions of the pliers leg segments 21 and 22 within the coverage area U.

[0131] Jaws 5 and 6 have working surfaces 23 and 24, in Figures 1 to 18 In the first embodiment shown, the working surfaces are formed only by teeth 25 and 26. Figure 2 As shown, in the closed position of the pliers, a jaw opening 27 of the jaw 7 is provided between the teeth 25 and 26.

[0132] Each tooth 25 and 26 is composed of a plurality of teeth 28 that taper toward the jaws 7, and the tooth tips 29 or the tooth valleys 30 formed between the teeth extend substantially toward the axis x of the hinge pin that forms the axis of rotation.

[0133] exist Figure 2In the smallest closed position of the clamps shown, the jaws 7 have a jaw opening 27 extending transversely to and along the longitudinal mid-plane E, into which the teeth 28 of the teeth 25 and 26 extend. In this case, in a view where the axis of rotation x is shown as a dot and the longitudinal mid-plane E is shown as a line, the jaws 7 are first defined on both sides of the longitudinal mid-plane E by the working surfaces 23 and 24 of the jaws 5 and 6. Furthermore, the jaws also have a through-plane D, see [reference needed]. Figure 5 In the enlarged view, the through-plane may coincide with the longitudinal intermediate surface E, but they do not necessarily have to. In this embodiment, if the jaws are further closed after the through-plane D is formed in the defined manner, then it coincides with the longitudinal intermediate surface E.

[0134] In the illustrated embodiment, when jaw 7 is in Figure 5 In the position shown in the enlarged view, the through-plane D extends approximately centrally relative to the working surfaces 23 and 24 at the free ends of the jaws 5 and 6. However, ultimately, regarding the extent of extension, only the rules that will be clarified in the context are more important. In this case, the through-plane D can be formed such that, with the jaws 7 as closed as possible, the through-plane extends at a right angle to the longitudinal centerline 50 of the longitudinal slot 13, where the intersection point P of the through-plane D and the longitudinal centerline 50 is generated (see...). Figure 5 ).

[0135] According to Figure 21 and Figure 22 In the implementation of the method, the rotation axis x preferably extends in the through plane D, see [reference]. Figure 21 The enlarged view shows that, in this embodiment, the axis of rotation also coincides with the longitudinal mid-plane E.

[0136] The maximum length of the penetrating plane D described in this application refers to the dimension A from the end of the jaw opening 27 on the hinge side to the point of first tooth contact, see also [reference needed]. Figure 5 Enlarged image.

[0137] Furthermore, the orientation selection from the intersection point P of the penetrating plane D is such that, at this penetrating plane D, during the closing of the jaws 7, the two working surfaces of the free ends 48 of the two jaws 5 and 6 simultaneously make their first contact, for example, viewed from the rotation axis x, through the tooth tips located in the end region of the jaws adjacent to the jaws 7. Preferably, the first contact can be achieved before reaching the jaws in the closed position. Figure 5 The enlarged icon in the image indicates the contact location, which differs from what is shown in other cases. Figure 5 The closed positions are opposite. Linear contact through plane D is achieved by at least one tooth of each jaw 5 and 6.

[0138] For example, refer to Figure 9The side view of the pliers 1 shown indicates that the tooth tip 29 has tooth surfaces 47 and 47' on both sides, and these tooth surfaces extend away from the tooth tip 29 into the tooth valley 30. In the view, the straight tooth surfaces 47 and 47' form an angle with each other. Figures 10 to 13 In the significantly enlarged view (where, for clarity, only a jaw is shown as a dashed line), an angle bisector Q is drawn between the tooth surfaces 47 and 47' of tooth 28, which respectively form an acute angle δ or ε with respect to the perpendicular line N that intersects the tooth tip 29 at the same point as the angle bisector Q and is oriented transversely to the penetrating plane D (in the region where the angle bisector Q extends within the jaw 7).

[0139] Especially since Figure 9 , Figure 11 and Figure 13 It can be seen that the jaw 5 is provided with two sets of G5 and G6 teeth 28, which have different orientations with corresponding acute angles δ or ε. Observing from the free end 48 of the jaw 5 away from the axis of rotation or the axis of the hinge pin x or the relevant working surface 23 towards the axis of the hinge pin x, the first set of G5 teeth 28 is constructed in the second working surface 23, and its acute angle δ is formed between the vertical line N and the axis of the hinge pin x.

[0140] The angle bisector Q of the G5 tooth 28 starts from the tooth tip 29 and slopes upwards from the jaw 7 toward the free end 48 of the jaw 5.

[0141] The acute angle δ of tooth 28 in group G5 can be, for example, about 20 degrees to about 50 degrees, and further, for example, about 25 degrees to about 40 degrees.

[0142] Referring to the side view, the tooth tips 29 of the first group G5 of the jaws 5, pointing towards the jaws 7, are oriented within the jaws 7 in the direction of the hinge pin axis / rotation axis x. This achieves a corresponding sweepback structure (Pfeilung) of the teeth 28 in the direction of the hinge pin axis / rotation axis x.

[0143] In this case, starting from the free end 48, the vertical distance b from the tooth tip 29 to the penetrating plane D gradually increases within group G5. Therefore, according to the illustrated embodiment, starting from the free end 48, the distance b can approximately double from one tooth to the next.

[0144] Adjacent to group G5 is the second group G6, which has teeth 28, and its acute angles ε are generated between the perpendicular line N and the free end 48, or between the perpendicular line N and the angle bisector Q. These angle bisectors Q extend obliquely from the tooth tip 29 away from the jaws 7 and downward toward the hinge pin axis x.

[0145] Preferably, the second group G6 can be further divided into two groups G6-1 and G6-2. The acute angle ε of group G6-1, which is adjacent to the first group G5, is chosen to be much smaller than the acute angle ε of group G6-2, which is adjacent to group G6-1 in the direction of the rotation axis x. Accordingly, the downward inclination is smaller in the region of group G6-1 compared to that in group G6-2.

[0146] Therefore, for example, with respect to the first group G6-1 of the second group G6, an acute angle between approximately 0.5 degrees (or less, possibly as close to 0 degrees) and approximately 10 degrees can be given, further for example, an acute angle between approximately 1 degree and approximately 5 degrees. And, with respect to the second group G6-2, the acute angle ε is, for example, between approximately 10 degrees and approximately 45 degrees, further for example, between approximately 15 degrees and approximately 40 degrees. The angle ε of the second group G6-2 can correspondingly be approximately 1.5 times to approximately 100 times the acute angle ε of the first group G6-1, further for example, approximately 3 times to approximately 50 times.

[0147] Starting from the tooth 28 of the second group G6 immediately adjacent to the tooth of the first group G5 or the first group G6-1, the vertical distance b of the tooth 28 from the penetrating plane D can gradually decrease in the direction of the rotation axis x. In this case, the distance b of the tooth 28 of the second group G6 immediately adjacent to the tooth of the first group G5 can be selected to be 1.2 to 1.7 times larger than the distance b of the tooth 28 of the first group G5 immediately adjacent to the tooth of the second group G6 in the direction of the free end 48.

[0148] The corresponding distance b in the direction of the last tooth 28 of the second group G6 toward the axis of rotation x can be reduced from one tooth to the next to approximately 0.5 to approximately 0.8 times the distance b of the adjacent tooth 28 in the same group G6 toward the free end 48.

[0149] Relative to the working surface 23 of the jaw 5, starting from the free end 48 toward the rotation axis x, a distance b that increases almost continuously can be generated first in the region of group G5, and then a distance b that decreases preferably almost continuously can be generated by transitioning to the second group G6.

[0150] Referring to the side view, the tip 29 of the second set of G6 teeth of the jaw 5 faces the free end 48, thereby achieving a corresponding sweepback of the teeth 28 in the direction of the jaw tip 34.

[0151] According to the illustrated embodiment, in the working surface 24 of the jaw 6, there are preferably four groups of teeth G1 to G4. These teeth, extending longitudinally L from the free end 48 towards the hinge pin axis / rotation axis x, are connected in series from group G1 to group G2 and G3 up to group G4. Each group is transformed to achieve changes in the orientation of acute angles δ and ε, or changes in the inclination towards the free end or rotation axis x (see Figure 9 for details). Figure 10 and Figure 12 ).

[0152] The acute angle δ of groups G1 and G3 can be adjusted between the perpendicular line N and the rotation axis x, respectively, while in groups G2 and G4, an acute angle ε is formed between the perpendicular line N and the free end 48. Correspondingly, in groups G1 and G3, the angle bisector Q is inclined away from the jaw 7 and towards the free end, while in groups G2 and G4, the angle bisector Q is inclined towards the rotation axis x.

[0153] The acute angle δ of tooth 28 in group G1 can be, for example, from about 5 degrees to about 30 degrees, and more specifically, from about 10 degrees to about 20 degrees. Compared to group G1, the acute angle in group G3 can be selected to be at least partially larger. In this regard, an acute angle δ in group G3 can be selected, for example, between about 20 degrees and about 60 degrees, and more specifically, between about 30 degrees and about 45 degrees.

[0154] The acute angle ε of tooth 28 in group G2 can move within the same range described for the acute angle δ of group G1, but this acute angle ε originates on the side of the perpendicular N opposite to angle δ. The acute angle in group G4 can be selected to be at least partially larger than that in group G2. In this case, it is preferable to produce a range of values ​​for the acute angle ε of group 4, as described with respect to the acute angle δ of group G3.

[0155] As shown in the figure, two regions C1 and C2 can also be formed, each consisting of a group with an acute angle δ and an adjacent group with an acute angle ε, respectively. The acute angles δ and ε of the two groups have the same or approximately the same range of values. Therefore, in the described embodiment, the first region C1 is composed of groups G1 and G2, and the second region C2 is composed of groups G3 and G4.

[0156] It can also be seen that the distance b in region C2, that is, the distance b in regions G3 and G4, is basically chosen to be greater than the distance in the first region C1.

[0157] Relative to the working surface 23 of the other jaw 5, a distance b is generated in the free space of the jaw 7 between the tooth tip 29 and the penetrating plane D. However, in the region of the opposite working surface 24, particularly in the region of the first group G1, a negative distance b is generated because the corresponding tooth 28 extends beyond the penetrating plane D. In this case, a distance b is correspondingly generated in the direction from the tooth tip 28 toward the tooth valley 30, measured along the perpendicular line N within the tooth 28.

[0158] In this case, its distance dimension corresponds to the overhang of tooth 28 protruding from the penetrating plane D, wherein this free overhang protruding from the penetrating plane D may, if necessary, only be... Figure 9 This is achieved in the minimum jaw opening of the jaws in the jaw closure position shown.

[0159] This convexity (distance b) is preferably in the range of a small 1 / 10 mm, for example, in the range of no more than 0.5 mm.

[0160] In particular, observing from the transition from group G1 to group G2 and up to the transition from group G3 to group G4, the distance b between the teeth 28 of groups G2 and G3, and, if necessary, the distance between the teeth 28 of the fourth group G4 adjacent to the third group G3, gradually increases in the direction of the rotation axis x. In this case, the increase in the distance between teeth in group G2 can be greater numerically than the increase in the distance between teeth in group G3.

[0161] Therefore, in the region of the second group G2, the increase in the corresponding distance b between teeth is approximately 1.5 to approximately 2 times that of the distance b between adjacent teeth 28 in the same group G2 in the direction toward the free end 48. In the third group G3, the distance b between teeth can be increased by approximately 1.2 to approximately 1.5 times that of the distance b between adjacent teeth 28 in the same group G3 in the direction toward the free end 48.

[0162] Preferably, the gradual decrease in distance b is achieved essentially only in the region of the fourth group G4. In this case, when viewed from the transition from the third group G3 to the fourth group G4 in the direction of the rotation axis x, the corresponding distance b between the teeth is reduced by approximately 1.5 to approximately 2.5 times the distance b of the adjacent tooth 28 in the same group G4 in the direction of the free end 48.

[0163] Referring to the side view, the tooth tips 29 of the first group G1 and the third group G3 of the jaws 6 are oriented towards the hinge pin axis x, thereby creating a corresponding sweepback of the teeth 28 towards the handle sections 3 and 4. Referring to the side view, the tooth tips 29 of the second group G2 and the fourth group G4 are oriented towards the free end 48, resulting in a corresponding sweepback of the teeth 28 towards the jaw tip 34.

[0164] Several groups of teeth 28 with specific angular orientations (angles δ or ε) on two working surfaces 23 and 24 or two jaws 5 and 6 are arranged at least partially opposite to each other relative to the longitudinal intermediate surface E or the through plane D. Preferably, the groups G1 of the first working surface 24 and the group G5 of the second working surface 23 partially overlap with the vertical projection of the groups along the perpendicular line N onto the longitudinal intermediate surface E or the through plane D, while the group G6 of the second working surface 23 overlaps with the teeth 28 of the groups G2 and G4 of the first working surface 24 in the same direction and with a third group G3 having tooth tips 29 oriented in the opposite direction. Particularly as... Figure 9 In the jaw closure position shown, it is more preferable to adopt a staggered arrangement of the tooth tips 29 of the two working surfaces 23 and 24 along the through plane D. Therefore, in the preferred vertical projection relative to the longitudinal intermediate plane E, the tooth tip 29 of one working surface is substantially opposite to the tooth valley 30 of the other working surface.

[0165] Reference Figure 8 Side view of pliers 1 or for example Figure 16 In the cross-sectional view (in the side view or the cross-sectional view, the hinge pin axis x is shown as a point), between two tooth tips 29 that are connected substantially along the longitudinal direction L, the outlines Z and Z' can form a linearly extending sub-segment T that connects the tooth tips 29 of each tooth 25 and 26 together.

[0166] In general, wavy contour lines Z or Z' can be generated respectively. When viewed outward from the jaw opening 27, they have crests 31 and troughs 32, which are roughly mirror images of the longitudinal mid-plane E or the penetrating plane D. The crest 31 of one contour line Z or Z' is preferably substantially opposite to the trough 32 of the other contour line Z or Z'.

[0167] A transition section 33 is provided in the transition from the crest 31 to the trough 32 of the contour line Z or Z'.

[0168] Therefore, in any case, in the region of the crest 31, two adjacent sub-segments T of the contour line Z or Z' will be generated, which form an angle α of 170 degrees or less relative to each other and toward the jaw 7, for example, an angle α of about 150 degrees or 165 degrees relative to the contour line Z, and further, for example, an angle α of about 130 degrees or 170 degrees relative to the contour line Z'.

[0169] In the region of trough 32, an angle β of 170 degrees or greater can be formed between two adjacent sub-segments T in the direction of contour line Z or Z'. Therefore, according to the illustrated embodiment, an angle of about 180 degrees can be formed relative to contour line Z and an angle of about 185 degrees can be formed relative to contour line Z'.

[0170] In the region of transition 33, preferably, two consecutively arranged sub-segments T can be formed in each contour line Z or Z', and the sub-segments preferably form an angle γ greater than 190 degrees relative to each other in the direction of the jaws 7, more preferably, for example, an angle γ of about 195 degrees relative to the contour line Z, and even more preferably, for example, an angle γ of about 200 degrees relative to the contour line Z'.

[0171] For example, Figure 8 As shown, in the jaw closed position, the jaws can generally be defined by contour lines Z and Z', for example, producing a rhomboid jaw opening face M in the minimum jaw opening w.

[0172] The tooth surfaces 47 and 47' of tooth 28 are more preferably oriented at an angle to each other, so that in the regions of the crests 31 of the two working surfaces 23 and 24, they respectively form a backward sweep toward the hinge pin axis x, and in the regions of the troughs 32, they form a sweep toward the clamp tip 34. In the region of the transition portion 33, tooth 28 is oriented substantially neutrally.

[0173] The orientation of tooth tip 29 can also be determined by the different lengths of tooth surfaces 47 and 47' of tooth 28. Therefore, as Figures 10 to 13 As shown, when the tooth tip 29 tends to be oriented toward the free end 48, the longer tooth surface 47 is constructed on the side of the tooth 28 facing the axis of rotation x and thus away from the free end 48. Conversely, when the tooth tip 29 tends to be oriented toward the axis of rotation x, the shorter tooth surface 47' is constructed on the side away from the free end 48.

[0174] This advantageously results in the possible division of the jaws 7, particularly when the pliers 1 are used to clamp the body to be rotated using the jaws 7. Therefore, the teeth 28 in the front region 51 facing forward of the jaw tip 34, in the areas of the crests 31 of the working surface 23 and the troughs 32 of the working surface 24, are preferably used to apply a leftward rotation of the body, for example, to loosen a threaded connection (see...). Figure 19 The teeth 28 of the troughs 32 of working surface 23 and the crests 31 of working surface 24, in the rear region 52 facing the axis of rotation or the axis of hinge pin x, are used for right-hand rotation, for example, for tightening threaded connections (see...). Figure 20 ).

[0175] In the front region 51 or rear region 52 of the jaw 7, the teeth 28 of the working surfaces 23 and 24 are, for example, in the form of... Figure 19 and Figure 20 The workpiece is clamped by the circular pin 49 shown, wherein at least one double clamping of the circular pin 49 is given by at least one tooth 28' and 28'' on each working surface 23 and 24, respectively. This double clamping is achieved at least with the shown diameter e of the circular pin 49, which requires the jaw angle η to be preferably about 10 degrees. While maintaining, for example, an angle η of about 10 degrees, the diameter e of the circular pin 49 can be selected to be smaller when clamped in the front region 51 compared to when clamped in the rear region 52.

[0176] Preferably, in the front region 51, the circular pin 49 is held by the teeth 28'' of the first group G1 of the first working surface 24, which are inclined and oriented towards the free end 48, and, if necessary, by two teeth 28, but at least one tooth 28'' of the second group G6 of the second working surface 23. Where the two teeth 28 may abut against the second working surface 23, the teeth belong to different groups G5 and G6 that are consecutively arranged along the longitudinal extension of the jaws 7. Accordingly, in this region, holding is preferably performed in the region of the trough 32 of the contour line Z.

[0177] according to Figure 20 When the circular pin 49 is clamped in the rear region 52, it is clamped in the region of the second working surface 23 by the teeth 28'' of the second group G6 facing the free end 48 and at least one tooth 28' of the second group G2 of the first working surface 24 facing the axis of rotation x. If necessary, another clamping can be achieved in the region of the group G3 of the first working surface 24 by means of the teeth 28'.

[0178] The layout and design of the teeth 28 along the contour line Z or Z' allows the use of pliers 1 with the proposed jaws 7 in a relatively large diameter range of the workpiece to be clamped, for example, in the range of about 1.5 to 4 mm or greater, and further, for example, up to 16 or 20 mm or greater.

[0179] according to Figure 21 and Figure 22 The illustration also shows that this technical solution of jaw 7 can be used in so-called combination pliers, for example, to form jaw 7 in the form of a burner hole. Furthermore, viewed along the longitudinal extension L of this pliers 1, the cutting edge 35 can be positioned upstream of jaw 7 in the direction of the rotation axis x, just as the working surfaces 23 and 24 can be adjacent to jaw 7 in the direction of jaw top 34 to form clamping surface 36.

[0180] As an alternative to the generally rhomboid layout of the outlines Z and Z' of the two working surfaces 23 and 24, the working surfaces 23 and 24 may have a group of two opposing rows of teeth 28, and their outlines Z and Z' or the envelope connecting the tooth tips 29 together extend in a straight line within the overall extension of the corresponding tooth portion 16 in the aforementioned view (see...). Figure 23 If necessary, the outlines Z and Z' of the straight-line extensions of the two working surfaces 23 and 24 may also extend diffusely relative to each other, including, for example, forming acute angles relative to each other of, for example, 10 or 20 degrees.

[0181] As a further alternative, in this regard, a convex orientation can also be adopted, with the two contour lines Z and Z' or the envelope surface extending outward from the penetrating plane D (see...). Figure 24As a further alternative, a concave orientation can be adopted, where two contour lines Z and Z' or the envelope surface extend outward from the penetrating plane D (see Figure 25). One contour line Z and Z' or one envelope surface extends outward from the penetrating plane D in a concave curve, while the other contour line Z and Z' or another envelope surface extends in a convex curve (see Figure 25). Figure 26 ).

[0182] The teeth 28 of working surfaces 23 or 24, particularly their tooth tips 29, are substantially opposite to tooth valleys 30 relative to the penetrating plane D. These tooth valleys arise between the two teeth 28 of another working surface 24 or 23 along the extension direction of the corresponding contour lines Z or Z'. The design of the teeth, particularly the orientation of tooth surfaces 47 and 47', can be adapted to the working surfaces 23 and 24 according to the orientation of contour lines Z and Z', especially when the two contour lines Z and Z' extend in the same concave or convex shape, for example (see...). Figure 24 and 25 ).

[0183] Regardless of the orientation of the contour lines Z and Z' or their envelope, each working surface 23 and 24 is provided with a tooth 16. Specifically, a set of tapered teeth 28 on the second working surface 23 corresponding to the front region 51 is oriented towards the rotation axis x, while another set of teeth 28 on the same working surface 23 in the rear region 52 is oriented towards the free end 48. The set of teeth 28 on the first working surface 24 in the front region 51 that is away from the axis preferably has teeth 28 extending obliquely towards the free end 48. The other set on the same working surface 24 corresponding to the rear region 52 is preferably provided with teeth 28 that are obliquely oriented towards the rotation axis x.

[0184] Furthermore, the working surfaces 23 and 24 may have recesses extending toward the clamp tip 34, particularly in the clamps 1 of the first embodiment, and also in the case of the clamps 1 constructed in the form of the combined clamps of the second embodiment, so that, especially when the clamps 1 are closed, in such a way... Figure 6 The jaws 7 shown retain an opening 37 on the top side in the forward view. The opening 37, with surrounding teeth 38, can be formed by a recess that preferably extends linearly along the longitudinal direction L. The jaws 1 thus designed are also adapted to surround the body on the tip side so as to allow for rotation, for example.

[0185] Figures 23 to 26 The tooth groups shown in the diagram, with their different orientations, can be supplemented by one or more other groups in their respective working surfaces. In this case, the other groups are joined together in terms of orientation such that the group is oriented in the opposite direction to the adjacent group.

[0186] The foregoing embodiments are used to illustrate the invention encompassed by this application as a whole. The invention independently constitutes an improvement over the prior art through at least the following combinations of features, wherein two, more, or all of these combinations of features can also be combined with each other, namely:

[0187] A pair of pliers, characterized in that the teeth 16 can be passed over (or overtaken) by pressing down the hinge pin 2 to adjust the jaw opening w, wherein the through-jaw legs 4 have a longitudinally extending coverage area U, wherein the through-jaw legs 4 are covered on both sides by the through-jaw legs 3, and furthermore, the coverage area U extends substantially at right angles to the adjustment direction r of the hinge pin 2 in the longitudinal slot 16, the coverage area having a width g, which is equivalent to 0.5 times or more of the maximum adjustment f, and the coverage area having a length d, which is equivalent to 2 times or more of the maximum adjustment f.

[0188] A pair of pliers, characterized in that, in the process of adjusting the jaw opening w from a smaller to a larger jaw opening relative to the jaw legs 21, 22 on the handle side, a larger overlapping position is achieved first in any case.

[0189] A pair of pliers, characterized in that, when adjusted to a greater jaw opening (w), the width h of the pliers 1 first decreases in the region of its overlapping position from the closed pliers 1.

[0190] A pair of pliers, characterized in that the fixed plier legs 3 have recesses 39 adapted for pressure manipulation of a hinge pin 2, wherein the axis x of the hinge pin is eccentrically arranged relative to the geometrically central axis y of the recess.

[0191] A pair of pliers, characterized in that the axis x of the hinge pin is offset from the axis y of the recess along the adjustment direction r of the jaw 7.

[0192] A pair of pliers, characterized in that the jaws 5 and 6 have working surfaces 23 and 24, and the working surfaces are provided with teeth 25 and 26.

[0193] A pair of pliers, characterized in that the working surfaces 23, 24 are deepened relative to the longitudinal extension L of the jaws 7 toward the top of the jaws 34, such that when the pliers 1 is closed, an opening 37 is retained in the front view of the jaws 7.

[0194] A pair of pliers, characterized in that: two working surfaces 23, 24 each have teeth 28 in their direction from the free ends 48 of the jaws 5, 6 toward the rotation axis x, the tooth tips 29 of the teeth having an orientation toward the rotation axis x, and there are further teeth 28 in the same working surfaces 23, 24, the tooth tips 29 of the other teeth having an orientation toward the free ends 48 of the jaws 5, 6, or vice versa, wherein, further, groups G1, G2, G3, G4, G5 and G6 of the teeth 28 respectively oriented in opposite directions are arranged oppositely on the first or second working surfaces 23, 24.

[0195] A pair of pliers, characterized in that, viewed from the free end of the working surfaces 23 and 24 of the jaws 7 toward the axis of rotation x, a first set of G1 teeth 28 is first constructed in the first working surface 24 of the jaws 7, wherein the corresponding angle bisector Q of the teeth 28 extends obliquely from the tooth tip 29 away from the jaws 7 to the free end of the jaws 6, followed by a second set of G2 teeth 28, wherein the corresponding angle bisector Q extends obliquely to the end of the hinge side of the jaws 7, followed by a third set of G3 teeth 28, wherein the corresponding angle bisector Q again extends obliquely to the free end of the jaws 6.

[0196] A pair of pliers, characterized in that, viewed from the free ends 50 of the working surfaces 23 and 24 of the jaws 7 toward the axis of rotation x, a first set of G1 teeth 28 is first constructed in the first working surface 24 of the jaws 7, wherein an acute angle δ is given between the vertical line N and the axis of rotation x, respectively; a second set of G2 teeth 28 is then provided, wherein an acute angle ε is given between the vertical line N and the free ends 50 of the working surfaces 23 and 24 of the jaws 7, respectively; and a third set of G3 teeth 28 is then provided, wherein an acute angle δ is given between the vertical line N and the axis of rotation x.

[0197] A pair of pliers, characterized in that a fourth group of G4 teeth 28 is adjacent to a third group of G3 teeth 28, wherein the corresponding angle bisector Q of the teeth 28 extends obliquely to the hinged end of the jaws 7.

[0198] A pair of pliers, characterized in that a fourth group of G4 teeth 28 is adjacent to a third group of G3 teeth 28, the acute angle ε of which is given between the perpendicular line N and the free ends 50 of the working surfaces 23 and 24 of the jaws 7.

[0199] A pair of pliers, characterized in that groups G1, G2, G3, G4, G5 and G6 of teeth 28 having specific angular orientations are opposed relative to the penetrating plane D.

[0200] A pair of pliers, characterized in that the tooth tips 29 are arranged offset from each other relative to the perpendicular line N passing through the longitudinal intermediate surface E with respect to their opposing positions.

[0201] A pair of pliers, characterized in that a first group of G5 teeth 28 is provided in the second working surface 23 of the jaws 7, wherein the corresponding angle bisector Q of the teeth 28 extends obliquely from the tooth tip 29 away from the jaws 7 to the free end of the jaws 5, and thereafter a second group of G6 teeth 28 is provided, wherein the corresponding angle bisector Q extends obliquely to the hinged end of the jaws 7, and the second group of G6 teeth 28 has two groups G6-1 and G6-2 of the teeth 28, namely, a first group G6-1 with a smaller angle bisector Q and a second group G6-2 with a larger angle bisector Q.

[0202] A pair of pliers, characterized in that a first set of G5 teeth 28 is provided in the second working surface 23 of the jaw 7, wherein an acute angle δ is given between the vertical line N and the rotation axis x, and a second set of G6 teeth 28 is provided, wherein an acute angle ε is given between the vertical line N and the free ends 50 of the working surfaces 23 and 24 of the jaw 7, and the second set of G6 teeth 28 has two groups G6-1 and G6-2 of the teeth 28, namely, a first group G6-1 with a smaller acute angle ε and a second group G6-2 with a larger acute angle ε.

[0203] A pair of pliers, characterized in that a circular pin 49 can be held in a front region 51 of the jaws 7 facing the free ends 48 of the jaws 5, 6 and in a rear region 52 facing the axis of rotation x by one or more teeth 28 of a first or second working surface 23, 24 oriented in opposite directions, wherein teeth 28 of different groups G1, G2, G3, G4, G5 and G6 engage with the circular pin 49 in the front and rear regions respectively, wherein the circular pin is held in the rear region by two teeth 28 (the tooth tips 29 of which extend in opposite directions) respectively belonging to one of the opposite working surfaces 23, 24, and the circular pin is held in the front region 51 by two teeth 28 (the tooth tips 29 of which extend in opposite directions) respectively belonging to one of the opposite working surfaces 23, 24.

[0204] A pair of pliers characterized in that if the circular pin 49 has a diameter e such that the jaw opening is approximately 10 degrees for clamping the circular pin 49 in the front region 51 or the rear region 52, then the circular pin 49 can be double-clamped in any way.

[0205] A pair of pliers, characterized in that the orientation of the tooth tip 29 is predetermined by the different lengths of the tooth surfaces 47, 47' of the corresponding teeth 28, wherein, in the orientation toward the rotation axis x, a longer tooth surface 47 is constructed on the side of the tooth tip 29 opposite to the rotation axis x, and in the orientation of the tooth tip 29 toward the free ends 48 of the jaws 5, 6, a longer tooth surface 47 is constructed on the side of the tooth tip 29 opposite to the free ends 48 of the jaws 5, 6.

[0206] A pair of pliers, characterized in that: each contour line Z, Z' in any case has two adjacent sub-segments T, the sub-segments forming an angle α of 170 degrees or less, for example, 100 degrees, relative to each other toward the jaws 7; and the sub-segment T is opposite to a sub-segment T of another contour line Z, Z', the sub-segment forming an angle β of 170 degrees or more, for example, 190 degrees, relative to each other toward the jaws 7; and each contour line Z, Z' comprises two sub-segments T, the sub-segments forming an angle γ of 190 degrees or more relative to each other when viewed in the same direction.

[0207] All disclosed features (as individual features or combinations thereof) are essential to the invention. Therefore, the disclosure of this application also includes all the contents disclosed in the related / appended priority material (text of the prior application), the features of which are also incorporated into the claims of this application. Dependent claims (even if they do not contain the features of the related claims) characterize improvements to the invention relative to the prior art, and in particular, divisional applications may be derived based on those claims. The invention given in each claim may further have one or more of the features given in the foregoing description, particularly those indicated by reference numerals and / or given in the list of reference numerals. The invention also relates to design forms in which individual features described in the foregoing description are not implemented, particularly features that are not essential for the specific use or can be replaced by other components that are technically equivalent in function.

[0208] List of reference numerals

[0209] 1 Pliers

[0210] 2. Hinge pin

[0211] 3 (Fixed) clamp legs

[0212] 4 (movable) clamp legs

[0213] 5. Jaws

[0214] 6. Jaws

[0215] 7 jaws

[0216] 8. Handle section

[0217] 9. Handle section

[0218] 10 slots

[0219] 11 Forked section

[0220] 12. Reception area

[0221] 13. Longitudinal seam

[0222] 14 Opening

[0223] 15 Forked sections

[0224] 16 teeth

[0225] 17 Corresponding teeth

[0226] 18 leaf springs

[0227] 19. Bottom of hinge pin

[0228] 20 Manipulating protrusion

[0229] 21. Pliers leg section

[0230] 22. Pliers leg section

[0231] 23 (Second) Working Face

[0232] 24 (First) Working Face

[0233] 25 teeth

[0234] 26 teeth

[0235] 27. Jaw opening

[0236] 28 teeth

[0237] 28' teeth

[0238] 28'' teeth

[0239] 29 Tooth crest

[0240] 30 Tooth Valley

[0241] 31 peaks

[0242] 32 troughs

[0243] 33 Transition Section

[0244] 34 clamp top

[0245] 35 Cutting edge

[0246] 36 clamping surfaces

[0247] 37 Opening

[0248] 38 teeth

[0249] 39. Dent

[0250] 40. Bend area

[0251] 41. Curved Area

[0252] 42 Pliers

[0253] 43 Edge

[0254] 44 Edge

[0255] 45 Edge

[0256] 46. ​​Edge

[0257] 47 tooth surface

[0258] 47' tooth surface

[0259] 48 Free End

[0260] 49 Round pins

[0261] 50 Longitudinal Centerline

[0262] 51 Front Area

[0263] 52 Rear Area

[0264] a. Dislocation

[0265] b Distance

[0266] d (coverage area) length

[0267] e diameter

[0268] f-adjustment

[0269] g (coverage area) width

[0270] h (width of pliers)

[0271] k width

[0272] r Adjust direction

[0273] w jaw opening

[0274] x Hinged pin axis

[0275] y-axis of the depression

[0276] Size A

[0277] C1 area

[0278] C2 area

[0279] D penetrates the plane

[0280] E. Longitudinal mid-surface

[0281] Group G1

[0282] Group G2

[0283] Group G3

[0284] Group G4

[0285] Group G5

[0286] Group G6

[0287] Group G6-1

[0288] Group G6-2

[0289] L Vertical extension

[0290] M jaw opening face

[0291] N perpendicular line

[0292] P intersection point

[0293] Q Angle Bisector

[0294] S extension

[0295] T subsection

[0296] U Coverage Area

[0297] V longitudinal centerline

[0298] Z-shaped outline

[0299] Z' outline

[0300] α angle

[0301] β angle

[0302] γ angle

[0303] δ angle

[0304] ε angle

[0305] η angle

Claims

1. A pair of pliers (1) having two plier legs (3, 4) intersecting the axis (x) of a hinge pin (2), wherein one plier leg (4) is considered movable and the other plier leg (3) is considered fixed, wherein, A handle section (8, 9) is formed on one side of the hinge pin (2), and jaws (5, 6) that act as clamping jaws (7) are formed on the other side of the hinge pin (2). The movable clamp leg (4) has a longitudinal slit (13) with teeth (16), and the hinge pin (2) located in the receiving portion (12) is movable disengaged from the teeth, and the movable clamp leg (4) passes through the fixed clamp leg (3). Furthermore, the longitudinal slit (13) has an extension (S) that extends laterally to the handle side of the clamp leg (3, 4) when the clamp (1) is closed. The characteristic feature is that the teeth (16)... The jaws can be passed over by pressing down the hinge pin (2) to adjust the jaw opening (w), wherein the through jaw (4) has a longitudinally extending coverage area (U), wherein the through jaw (4) is covered on both sides by the through jaw (3), and the coverage area (U) extends longitudinally and is perpendicular to the adjustment direction (r) of the hinge pin (2) in the longitudinal slot (13), the coverage area has a width (g) which is equivalent to 0.5 times or more of the maximum adjustment (f), and the coverage area has a length (d) which is equivalent to 2 times or more of the maximum adjustment (f).

2. The pliers according to claim 1, characterized in that, During the adjustment of the jaws (21, 22) relative to the handle side from a smaller to a larger jaw opening (w), the larger overlapping position is achieved first in any case.

3. The pliers according to claim 2, characterized in that, When adjusted to a larger jaw opening (w), the width (h) of this clamp (1) first decreases in the region of its overlapping position from the closed clamp (1).

4. The pliers according to claim 1, characterized in that, The fixed clamp leg (3) has a recess (39) configured for pressure manipulation of the hinge pin (2), wherein the axis (x) of the hinge pin is eccentrically arranged relative to the geometrically central axis (y) of the recess.

5. The pliers according to claim 4, characterized in that, The hinge pin axis (x) is offset from the center axis (y) of the recess along the adjustment direction (r) of the jaw (7).

6. The pliers according to claim 1, characterized in that, The jaws (5, 6) have working surfaces (23, 24), and the working surfaces are provided with teeth (25, 26).

7. The pliers according to claim 6, characterized in that, The working surfaces (23, 24) are deepened relative to the longitudinal extension (L) of the jaws (7) toward the top of the jaws (34), so that when the jaws (1) are closed, an opening (37) is retained in the front view of the jaws (7).

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