EP3313619A1

EP3313619A1 - Pliers having two plier legs that intersect at a joint pin

Info

Publication number: EP3313619A1
Application number: EP16729598.9A
Authority: EP
Inventors: Markus JEPPING; Andreas H. Groten
Original assignee: Orbis Will GmbH and Co KG
Current assignee: Orbis Will GmbH and Co KG
Priority date: 2015-06-23
Filing date: 2016-06-17
Publication date: 2018-05-02
Anticipated expiration: 2036-06-17
Also published as: EP3313619B1; ES2767323T3; WO2016207076A1; CN107995884B; CN107995884A; DE102015110060A1

Abstract

The invention relates to pliers (1), comprising two plier legs (2, 3), which intersect at a joint pin (4) and of which the one plier leg (3) is movable and the other plier leg (2) is stationary, and comprising a spring (18), which is arranged between the stationary plier leg (2) and the joint pin (4) and supports a tooth engagement of the joint pin (4), wherein furthermore the joint pin (4), through which an axis of rotation (x) of the movable plier leg (3) extends at the same time, can be moved in a longitudinal slot (9) of the stationary plier leg (2), and wherein the movable plier leg (3) can be selectively fixed in relation to the stationary plier leg (2) by means of tooth engagement between the joint pin (4) and the longitudinal slot (9), which tooth engagement occurs in the direction of a plane spanned by the plier legs (2, 3), wherein furthermore the joint pin (4) is accommodated in an only partially circular opening (13), which has a driving formation (29, 30) that deviates from the circular course, for interacting with a driving counter formation (31) of the joint pin (4), wherein the joint pin (4) is rotatably guided in the circular portion (28) of the opening (13) and a circular line (K) is defined by the circular portion (28) of the opening (13). In order to further improve pliers of the type in question while achieving a design that is favorable with regard to manufacturing, the driving formation (29, 30) according to the invention protrudes radially inward with respect to the circular line (K) and the driving counter formation (31) is likewise formed within the circular line (K).

Description

description

Pliers with two forceps arms crossing each other in a hinge pin. Technical area

The invention relates to a pair of pliers with two intersecting in a hinge pin pliers legs, of which one pliers leg is movable and the other pliers legs is fixed, and arranged with a between the stationary pliers leg and the hinge pin, a splined engagement of the hinge pin supporting spring, said form the pliers legs on one side of the hinge pin grip portions and on the other side a forceps jaw, wherein further the hinge pin through which at the same time an axis of rotation of the movable pliers limb, is adjustable in a longitudinal slot of the fixed pliers limb, and wherein means in the direction of the pliers leg spanned plane successive intermeshing engagement between the hinge pin and the longitudinal slot of the movable pliers legs relative to the fixed pliers leg is selectively fixable, moreover, the hinge pin in a only partially krei The trained trained opening having a deviating from the circular course driving-shaping, for cooperating with a driving Gegenausformung the hinge pin, said hinge pin is rotatably guided in the circular portion of the opening and given by the circular portion of the opening a circular line is.

State of the art

Pliers of the type in question are known in many ways. For example, reference is made in this regard to WO 2008/049850 A1 (US Pat. No. 8,695,464 B2). To change the forceps jaw width, it is known that the toothing engagement between the hinge pin and the longitudinal slot is advantageous. Lift up the lens in order to move thereafter the movable leg by means of the hinge pin within the longitudinal slot relative to the fixed leg. From the cited WO application, it is known to catch the hinge pin in a pliers limb, preferably the movable pliers limb, for rotational drive to catch rotationally positive locking in order to remove the meshing engagement, wherein the rotational drive only starts with partially open forceps jaw. The entrainment shaping of the opening in the pliers limb cooperates with a driving radially over the usual contour of the hinge pin driving Gegenausformungen, with a usual movement of the movable pliers limb to close or open the forceps jaw remains without affecting the toothing engagement.

Summary of the invention

In view of the above-described prior art, a technical problem of the invention is seen in a pliers of the type in question in terms of manufacturing technology favorable to further improve.

A possible solution to the problem is given according to a first inventive concept in a pair of pliers, in which it is geared to that the driving formation with respect to the circular line projects radially inward and the driving Gegenausformung is also formed within the circular line. The need for lifting the toothing engagement means of the hinge pin and in the region of the opening of a pliers leg extend within the resulting by the leading, circular section of the circular opening. Further preferably, the driving counter-shaping of the hinge pin extends within a preferably circular contour of the same - viewed in a direction perpendicular to the bolt axis. ongoing level. With the same hinge pin outer diameter, this offers the possibility of making the area surrounding the opening of the forceps limb slimmer in a material-saving manner, since the entraining counter-shaping of the hinge pin does not engage in the material of the forceps limb outside the opening.

The proposed invention can be used for example in pliers with superimposed in the hinge region pliers legs or pliers with a fork-shaped in the hinge region pliers legs, which fork portion is penetrated by the other pliers legs. The opening in the pliers limb may be formed as a result of machining or lasing.

The rotational displacement of the hinge pin to cancel the toothing is preferred only intentionally feasible. For this purpose, the forceps jaw is opened by means of the movable forceps leg beyond the usual extent. The cancellation of the meshing intervention is achieved solely by appropriate pivoting or rotational displacement of the forceps arms relative to each other. There is no need for further manual intervention in the area of the hinge pin by the user.

Further features of the invention are explained below, also in the description of the figures, often in their preferred association with the subject matter of claim 1 or with features of further claims. But they can also be in an assignment to only individual features of claim 1 or the respective further claim or each independently of importance. Thus, it is further preferred that the entrainment molding and / or the entrainment Gegenausf form rounded in terms of their inner or outer contour line. The contour lines preferably extend along a circular line which relates to the pin axis or the opening axis. Also, the contour line viewed from the pin axis to the outside radially only convexly curved and formed straight in sections. In a preferred embodiment, the curved portions of the driving-shaping run along a common, related to the opening axis circular line, as well as the convex portions of the entrainment Gegenausf preferred may lie on a common circular line.

The, the driving formations forming wall portions of the opening may extend substantially chord-like to the otherwise given circular contour of the opening. Distributed over the circumference can be formed several, in particular two driving formations. These can be arranged substantially diametrically opposite with respect to the opening axis, which at the same time also accommodates the pin axis when using the pliers. Here, one of the two driving formations alone form a boundary of the opening, but also serve (alternatively) for sluggish rotational drive of the hinge pin in the teeth release. The further driving-shaping can offer in the opposite direction of rotation of the relevant pliers limb a stop limit for defining the pliers mouth closed position and / or a dragging the hinge pin from the Verzahnungsfreigabe- in the toothing receiving position. In addition, the hinge pin can rotate freely in the opening preferably over an angular range of 10 to 45 °, more preferably approximately over an angular range of 15 to 30 °. The rotation limit of the hinge pin within the opening is given by the Mitnahme- formations. Also, the hinge pin at least one side, with respect to the course of the rotation axis offset to engagement teeth, which are formed on the hinge pin, form a support portion. Such a support portion may provide an axial securing of the hinge pin at least in one direction. Preferably, the support portion has a largest viewed transversely to the axis extension dimension, which is selected to be greater than the largest distance dimension of the flanks of the longitudinal slot to each other.

The support portion may have with respect to a floor plan in which the axis represents a point, for example, starting from a central pin portion outwards, for example, radially outwardly extending projections or the like, via which a corresponding Axialabstützung can be achieved. Preferred is an embodiment in which the mounting portion is formed as a cylinder portion, with a coincident with the axis of rotation cylinder axis. In addition, the support portion may come to rest on an outer surface of the longitudinal slot having pliers legs. Such a configuration is particularly preferred in the case of pliers in which the forceps arms lie directly on one another in the joint region, and the movable forceps limb preferably does not have a fork-shaped joint region. In such an arrangement, the support cut at a forceps jaw Wide adjustment according to corresponding displacement of the bolt in the longitudinal slot along the facing surface of the longitudinal slot having pliers legs moved.

The holding section can also be received in a recess of the movable pliers limb. Such a recess is preferably formed so that a rotation of the support portion according to corresponding rotational displacement of the bolt can be achieved. Thus, in a preferred embodiment of the mounting portion as a cylindrical portion, the recess receiving the mounting portion is preferably circular in plan view and overall preferably pot-shaped.

Also, the recess may be formed in the form of a relevant pincer leg completely penetrating bore.

In addition, the support portion may be received in a recess of the longitudinal slot having pliers limb. The recess is in this case preferably aligned with respect to a floor plan the course of the longitudinal slot, wherein further the recess in the thickness direction, i. extends in the axial extension direction of the bolt, only over a partial thickness of the pliers limb in the joint region and over the further part of the thickness in the region of an edge of the longitudinal slot, the counter toothing cooperating with the engagement teeth of the bolt is formed.

Brief description of the drawings

The invention will be explained with reference to the accompanying drawing, which illustrates only a plurality of embodiments. A part that is explained only with reference to one of the embodiments and at a another exemplary embodiment is not replaced by another part due to the special feature found there, it is therefore also described as part of this possible further embodiment as an existing part. On the drawing shows:

Fig. 1 in a first embodiment, a pliers of the type in question in front view, a pliers mouth closed position concerning;

Fig. 2 is the rear view of this;

Figure 3 is a cross-section through the pliers, cut in the plane of a leg, limited to the region of a longitudinal slot in the leg, the forceps jaw closed position concerning.

FIG. 4 shows the enlargement of region IV in FIG. 3; FIG.

FIG. 5 shows the enlarged region V in FIG. 2 after removal of a cover cap of a hinge pin; FIG.

Fig. 6 is a partially sectioned view of the pliers in the

Beaks open position;

FIG. 7 shows the enlargement of the region VII in FIG. 6; FIG.

8 shows a representation corresponding to FIG. 5, relating to the pliers position according to FIG. 6; 9 shows a partially sectioned illustration of the pliers according to FIG. 3, relating to a tooth raising position for sliding displacement of a pliers limb; FIG.

FIG. 10 shows the enlargement of the region X in FIG. 9; FIG. FIG. 11 shows a representation corresponding to FIG. 5, relating to the forceps position according to FIG. 9; FIG.

12 shows the section along the line XII-XII in Figure 10;

13 shows the pliers legs of the pliers and the hinge pin and the cover cap of the hinge pin in perspective exploded view;

FIG. 14 shows the hinge pin in a perspective detail view; FIG.

Fig. 15 in a second embodiment, a pair of pliers in front view, a forceps jaw closed position concerning;

16 shows the rear view for this purpose; FIG. 17 shows the pliers in a position according to FIG. 16 in a partially sectioned illustration; FIG.

Fig. 18 shows the enlarged area XVIII in Fig. 17;

19 is an exploded perspective view of the pliers according to

Figure 15; FIG. 20 shows the section according to the line XX-XX in FIG. 16; FIG.

21 shows a sectional view according to FIG. 20, relating to a further embodiment of the hinge pin formation;

FIG. 22 is a perspective view of a pair of pliers according to FIG. 15 with a pin configuration according to FIG. 21; FIG.

FIG. 23 is a view corresponding to FIG. 21 concerning a further embodiment; FIG.

Fig. 24 in a further embodiment a section according to FIG

21; Fig. 25 is another illustration corresponding to Figure 21, relating to another embodiment.

Description of the embodiments

Shown and described, first with reference to Figures 1 and 2, a first embodiment of a pair of pliers 1 in the form of a water pump pliers. This has two pliers legs 2 and 3, which intersect in a hinge pin 4.

The pliers leg 2 is referred to as a fixed pliers leg. The forceps limb 3 is rotatable about the rotation axis x given by the hinge pin 4 relative to the forceps limb 2 for changing the width of the forceps jaw M. Starting from the pliers legs 2 and 3 pivotally holding each hinge pin 4 form the pliers legs 2 and 3 on the one hand grip portions 5 and 6 and on the other side of the hinge pin 4 jaws 7 and 8. The fixed pliers leg 2 has a longitudinal slot 9 in the crossing region of the pliers legs 2 and 3. This passes through the hinge pin 4, the bolt axis, which also results in the axis of rotation x, extends transversely to the plane defined by the peripheral edge contour of the longitudinal slot 9 plane. The movable pliers leg 3 is fork-shaped in the crossing region of the pliers legs 2 and 3, with parallel and spaced apart extending fork sections 10 and 11. These flank the, the longitudinal slot 9 having leg portion of the stationary pliers leg 2. The fixed pliers leg 11 is through the Fork portion of the movable pliers limb 3 inserted.

The hinge pin 4 is rotatably supported in the fork sections 10 and 11 of the movable pliers limb 3. Thus, the fork portions 10 and 11 corresponding, the associated end portions of the hinge pin 4 receiving openings 12 and 13. The hinge pin 4 has in the, the longitudinal slot 9 in the forceps leg 2 penetrating region, in particular in the respective cross-sectional plane perpendicular to the axis of rotation x an elongated formation 32, projecting beyond the outwardly facing and aligned in the axial direction engaging teeth 14. These act with at an associated flank 15 of the Längsschiit- zes 9 arranged counter teeth 16 together, for sliding determination of the movable pliers arm 3 with respect to the pliers leg second

Transverse to the formation 32, a bore 17 is provided substantially opposite to the engagement teeth 14. In this sits a spring 18, which acts on a preferably captive in the bore 17 and over the bore opening plane and thus on the bore opening having surface of the recess 32 protruding ball 19 against the provided with the mating teeth 16 edge 15 opposite edge 20 acts to support the meshing engagement between the engagement teeth 14 of the hinge pin 4 and the mating teeth 16 in the region of the longitudinal slot 9.

The spring 18 is preferably a cylinder compression spring.

In the engaged position of the toothing between the joint pin teeth engaging teeth 14 and the longitudinal slot side counter teeth 16 according to the illustrations in Figures 1 to 8 is a pivotal displacement of the pliers leg relative to the pliers leg 2 about the axis of rotation x of the hinge pin 4 is possible to the To shift pliers jaws 7 and 8 in a forceps closed position shown in Figures 1 to 5 or out of this into a forceps jaw open position according to the representations in Figures 6 to 8.

According to volitional influence on the teeth this can be canceled, to change the forceps jaw distance according to displacement of the movable forceps leg 3 with the hinge pin 4 in the longitudinal slot. 9 The hinge pin 4 may have as a support portion 34 has a circular cylindrical portion 21 with a viewed in the direction of extension of the axis of rotation x thickness, which corresponds to the viewed in the same direction material thickness of the fork portion 10 substantially. With the cylinder portion 21 of the hinge pin 4 is rotatably guided in a recess in the form of a diameter-adapted opening 12 in the fork portion 10 about the rotation axis x.

The extending through the longitudinal slot 9 and engaging in the opening 13 of the other fork portion 11 bolt portion has in a plan, in which plan the axis of rotation x is point-shaped, substantially diametrically opposite circular sections 22. The respective radius of each circular segment 22 relating to the axis of rotation x corresponds to that of the cylindrical segment 21, so that the circular segments 22, viewed in the direction of extension of the axis of rotation x, preferably run into the circumferential wall of the circular segment 22 in an infinitely variable manner. There may be an edge in the inlet area.

The circular sections 22 are connected to each other in plan view over straight contour lines which straight lines running contour lines in a projection along the axis of rotation x on the cylinder section 21 cut this secant.

In the direction of extension of the axis of rotation x, following the cylindrical section 21, the surfaces 23 and 24 extend on both sides of the axis of rotation x, whose contour lines running straight in the plan view an angle α of about 15 to 30 °, for example about 20 °, to each other. On the surface 23, the engaging teeth 14 are formed on the longitudinal slot 9 passing through the area. These occur freely over the surface 23.

Overall, the hinge pin 4 is preferably formed only within a the diameter of the support portion or the cylinder portion 21 and / or the circular portion 22 receiving imaginary circular cylinder.

The cylinder portion 21 facing away from the end face 33 of the hinge pin 4 may be aligned with the forceps leg 2 facing away from the surface of the opening 13 having fork portion 11.

This pin surface is preferably provided with a central, the axis of rotation x receiving bore 25, in which a pin 26 of a cap 27 is seated. The cover cap 27 may have an enlarged diameter relative to the bolt diameter, for supporting on the edge region surrounding the opening 13 in the fork section 11.

The cap 27 may be connected via the pin 26 fixed to the hinge pin 4, for example, according to a screw connection between pin 26 and bore 25 or also due to a press fit. Also in this regard, a bond or flanging can be provided. In addition, a riveting can be provided. Also, if necessary, omitting the cap 27, the hinge pin 4 against axial displacement and thus be prevented from falling out, such as by placing a force acting on the support portion (cylinder portion 21) in the insertion direction spring or a corresponding spring-loaded part. In Figures 5, 8 and 11, the cap 27 is not shown to illustrate the function.

The opening 13 in the fork portion 11 is not formed as the opening 12 in the fork portion 10 throughout circular. Rather, with reference to a plan view of the opening 13, approximately diametrically opposite circular sections 28 are provided which lie on a common circular line K with the axis of rotation x as the center. The circular line K preferably has the same diameter as the opening 12 in the fork section 10.

The circular portions 28 are curved over the circular line K chord-like, in the course of their extension between the circular sections 28 radially inward toward the axis of rotation x curved extending contour lines connected to the formation of entrainment formations 29 and 30th

[0045] The associated end section of the hinge pin 4 engages between the driving protrusions 29 and 30. The surfaces 23 and 24 of the hinge pin 4 extend between the driving protrusions 29 and 30. The extending between the driving protrusions 29 and 30 radial portion of the hinge pin 4 forms a driving Gegenausformung 31st

The design of the entraining Gegenausformung 31 and given in the circumferential direction of the opening 13 spacing of the driving formations 29 and 30 allows a relative pivotal displacement of the pliers leg 3 to the pliers leg 2. Here, the hinge pin 4 is fixed in conventional pliers use, so that the pliers leg 3 in the course of the pivoting movement in the forceps jaw closed position a stop limit learns by the driving-shaping 29 against the driving counter-shaping 31 of the hinge pin 4 occurs.

With a pivoting displacement of the pliers arm 3 out of the pliers mouth closed position in the direction of a forceps jaw opening position, the pliers limb 3 initially rotates relative to the toothed pin located in toothed engagement 4. When the pliers jaw opening position is reached, the entrainment formation 30 occurs Attachment to the counter-countermolding 31.

The movable pliers leg 3 is in this case over an angle ß of about 30 ° relative to the hinge pin 4 and the stationary pliers leg 2 freely rotatable, or the hinge pin 4 freely rotatable about this angular range in the opening 13 of the pliers leg. 3

From the forceps jaw opening position shown in FIGS. 6 to 8, the toothing between the hinge pin 4 and the longitudinal slot 9 can be disengaged (see also arrow a) due to further pivoting of the forceps jaw 3 beyond the forceps opening position. For this purpose, the representations in Figures 9 to 12), according to Drehitschleppen the hinge pin 4 on the counter-shaping 31 supporting Mitnahme- shaping 30. This disengagement rotary displacement is stop limited by conditioning the toothing opposite surface of the formation 32 on the facing flank 20 of the longitudinal slot 9.

In the course of this further pivotal displacement, the hinge pin 4 is dragged about the axis of rotation x on the driving formation 30 under abutment against the driving Gegenausformung 31, which contrary to Effect of the spring 18 under immersion of the ball 19 in the bore 17, a pivoting of the engagement teeth 14 from the engaged position to the mating teeth 16 of the longitudinal slot 9 leads. The movable pliers limb 3 is displaceable in this pivoting position along the longitudinal slot 9 for changing the pliers jaw width.

The pivot stop limit and / or the pivoting action to cancel the toothing engagement may alternatively (optionally in addition) over the area designated as entrainment Gegenausformung 31 substantially diametrically opposite portion of the hinge pin 4 in cooperation with this associated Mitnahme- formations of the opening 13 achieved be.

The entraining counter-shaping 31 and / or the region lying opposite this embodiment can also be designed, for example, in the manner of a web or in the manner of a projection to form a central bolt section. With rearward displacement of the movable pliers limb 3 and associated Drehrückverlagerung of the hinge pin 4, the engagement position of the toothing between hinge pin 4 and longitudinal slot 9 is restored.

The rotational displacement of the forceps leg 3 beyond the forceps mouth opening position to cancel the teeth engagement can be done over an angle γ of about 15 °.

The repeal of the meshing engagement can be brought out of any detent position along the longitudinal slot 9 out. Both the openings 12 and 13 in the region of the fork sections 10 and 11 and the hinge pin 4 in total (possibly with the exception of the separate cap 27) extend with respect to a floor plan within the through the opening 12 and through the circular Ab - sections 28 of the opening 13 given circle line K.

FIGS. 15 to 20 show a second embodiment of a pair of pliers 1 with two pliers legs 2 and 3 lying directly on top of one another in the joint region.

The fixed pliers limb 2 is also provided here with a longitudinal slot 9 along the flank 15, the counter-toothing 16 is formed.

The movable pliers leg 3 is provided with an opening 13 according to the above-described embodiment, corresponding to trained driving formations 29 and 30th

The hinge pin 4 is formed in accordance with the above-described embodiment and, viewed axially viewed at the end, here too has a mounting portion 34 in the form of a cylinder portion 21. With this comes the hinge pin 4 on the facing and the longitudinal slot 9 surrounding outer surface of the fixed pliers limb 2 to the plant, so experiences an axial support. The region of the formation 32 with the spring-supported ball 19 passes through the longitudinal slot region. The engagement teeth 14 formed on the formation 32 are aligned with the counter teeth 16 of the forceps leg 2 for tooth engagement. In the region of the end of the hinge pin 4 facing away from the mounting portion 34, the latter is also provided with a driving countermold 31 according to the previously described embodiment, for cooperation with the driving protrusions 29 and 30 in the region of the opening 13 of the movable pliers arm 3 ,

An axial securing of the hinge pin 4 against falling out is also given here by placing a cap 27, which preferably completely covers the opening 13 of the movable pliers limb 3.

The operation of the usual use of the forceps 1 as well as the adjustment of the forceps jaw width is equal to the above-described embodiment, wherein a guide of the movable forceps leg 3 in

Pivoting direction is given in particular by cooperation of the circular section-shaped outer surfaces of the circular sections 22 with the facing circular sections 28 of the opening 13. FIGS. 21 and 22 show an alternative embodiment with respect to the attachment of the cover cap 27 to the hinge pin 4.

The hinge pin 4 is provided with a in use position on the end face 33 of the hinge pin 4 protruding, axially disposed pin 35 which passes through a central bore 36 of the cap 27. The bore 36 widens toward the open end preferably funnel-like, to allow the formation of a radially enlarged rivet head of the pin 35th

Although in FIGS. 21 and 22 the possible fixing of the cover cap 27 is based on a pair of pliers according to the exemplary embodiment in FIG. 15 is shown, this possibility of fixing the cap 27, as well as the comments below, even with a pair of pliers according to the first embodiment possible.

Figure 23 shows an embodiment based on the version shown in Figure 21. Again, the cap 27 is riveted to the hinge pin 4. The support section 34 designed as a cylinder section 21, which rests on the facing surface of the pliers arm 2 in the exemplary embodiment described above, is stepped in this embodiment with respect to a longitudinal section through the hinge pin 4. Thus, a radially extended collar of the support portion 34 can be supported on the facing surface of the forceps leg 2 or come to rest on this. In contrast, a diameter-reduced central cylinder portion 21 dives into a recess 37 of the longitudinal slot 9 having pliers legs 2 a. When viewed in the axial direction, this recess 37 extends over approximately half the thickness of the respective pliers limb 2. In addition to the further thickness dimension, the longitudinal slot 9 is formed along the flank 15 with the counter teeth 16. The recess 37 extends with respect to a plan view of the longitudinal slot 9 according to the slot profile. The hinge pin 4 is guided over the cylinder portion 21 on the flanks of the recess 37.

The bolt-side holding portion 34 is adapted with respect to its axial extent dimension to the corresponding Axialerstreckungsmaß the longitudinal slot. 9 Also, as shown in Figure 24, the cap 27 may be bolted to the hinge pin 4. For this purpose, the hinge pin 4 has a threaded bore 38 running in alignment with the axis of rotation x, in which a screw 39 passing through a central bore 36 of the cover cap 27 engages.

Also, according to Figure 25, the hinge pin 4 end opposite to the support portion 34 may be provided with a male thread having a pin portion 40 which protrudes beyond the bracket portion 34 facing away from the surface of the pliers 1 in the joint area. On this pin portion 40, a nut 41 is screwed, which can come to rest on the facing outer surface of the pliers limb.

Cover cap 27 and nut 41 together with the opposing mounting portion 34 provide an axial securing of the hinge pin 4. The above explanations serve to explain the inventions covered by the application as a whole, the prior art at least by the following feature combinations to educate independently, namely:

A pair of pliers, which is characterized in that the driving formation 29, 30 protrudes radially inwardly with respect to the circular line K and the entrainment Gegenausformung 31 is also formed within the circular line K. A pair of pliers, which is characterized in that the entrainment shaping 29, 30 and / or the entrainment Gegenausformung 31 run rounded with respect to their inner or outer contour line.

A pair of pliers, which is characterized in that distributed over the circumference two driving formations 29, 30 are formed.

A pair of pliers, which is characterized in that the hinge pin 4 can rotate freely in the opening 13 over an angular range of 10 to 45 °.

A pair of pliers, characterized in that the hinge pin 4 at least one side, with respect to the course of the rotation axis x offset from the engagement teeth 14, which are formed on the hinge pin 4, a support portion 34 is formed

A pair of pliers, which is characterized in that the support portion 34 is formed as a cylinder portion 21 A pair of pliers, which is characterized in that the support portion 34 on an outer surface of the longitudinal slot 9 having pliers legs 2 can come to rest.

A pair of pliers, which is characterized in that the holding portion 34 is received in a recess of the movable pliers limb 3. A pair of pliers, which is characterized in that the holding portion 34 is received in a recess 37 of the pliers leg 2 having the longitudinal slot 9.

List of reference numbers

1 pliers 27 cap

2 pliers legs 28 circular sections

3 pliers legs 29 driving formation

4 hinge pins 30 driving formation

5 grip portion 31 driving counter-shaping

6 handle portion 32 shaping

7 jaw 33 end face

8 jaw 34 holding portion

9 longitudinal slot 35 pin

10 fork section 36 bore

11 fork section 37 recess

12 opening 38 threaded hole

13 opening 39 screw

14 engaging tooth 40 pin portion

15 flank 41 nut

16 counter tooth a arrow

17 hole X axis of rotation

18 spring

19 sphere K circle line

20 flank M forceps jaw

21 cylinder section

22 Circular section α angle

23 area ß angle

24 area Y angle

25 hole

26 pen

Claims

claims

1. pliers (1) with two in one hinge pin (4) crossing pliers legs (2, 3), of which one pliers leg (3) is movable and the other pliers legs (2) is fixed, and with a between the stationary pliers leg ( 2) and the hinge pin (4) arranged, a tooth engagement of the hinge pin (4) supporting the spring (18), wherein the pliers legs (2, 3) on one side of the hinge pin (4) handle portions (5, 6) form and on the other side of a forceps jaw (M), wherein further the hinge pin (4) through which at the same time an axis of rotation (x) of the movable pliers limb (3) extends, in a longitudinal slot (9) of the fixed pliers limb (2) is adjustable, and wherein by means of engagement between the hinge pin (4) and the longitudinal slot (9) of the movable pliers legs (3) in the direction of a plane defined by the pliers legs (2, 3) relative to the stationary pliers limb (2) r, wherein in addition the hinge pin (4) is received in an only partially circular opening (13) having a deviating from the circular course entrainment molding (29, 30), for cooperation with a driving Gegenausformung (31 ) of the hinge pin (4), wherein the hinge pin (4) in the circular portion (28) of the opening (13) is rotatably guided and by the circular portion (28) of the opening (13) is given a circular line (K), characterized characterized in that the entrainment shaping (29, 30) with respect to the circular line (K) projects radially inward and the entrainment Gegenausformung (31) is also formed within the circular line (K).

2. Pliers according to claim 1, characterized in that the entrainment shaping (29, 30) and / or the entrainment Gegenausformung (31) hin- visibly rounded their inner or outer contour line.

Pliers according to one of the preceding claims, characterized in that distributed over the circumference two driving formations (29, 30) are formed.

Pliers according to one of the preceding claims, characterized in that the hinge pin (4) can rotate freely in the opening (13) over an angular range of 10 to 45 °.

Pliers according to one of the preceding claims, characterized in that the hinge pin (4) at least one side, with respect to the course of the rotation axis (x) offset from engagement teeth (14) formed on the hinge pin (4), a support portion (34) is formed ,

Pliers according to one of the preceding claims, characterized in that the holding portion (34) is formed as a cylinder portion (21).

Pliers according to one of the preceding claims, characterized in that the holding portion (34) on an outer surface of the longitudinal slot (9) having forceps leg (2) can come to rest.

8. Pliers according to one of the preceding claims, characterized in that the holding portion (34) is received in a recess of the movable pliers limb (3).

9. Pliers according to one of the preceding claims, characterized in that the holding portion (34) is received in a recess (37) of the longitudinal slot (9) having pliers limb (2).