WO2016128513A1

WO2016128513A1 - Pliers

Info

Publication number: WO2016128513A1
Application number: PCT/EP2016/052918
Authority: WO
Inventors: Martin Pech
Original assignee: Knipex-Werk C. Gustav Putsch Kg
Priority date: 2015-02-12
Filing date: 2016-02-11
Publication date: 2016-08-18
Also published as: DE102015102046A1; DE112016000746A5

Abstract

The invention relates to a pair of pliers (1) with two pliers legs (2, 3) and a pliers mouth (M) formed by mouth jaws (7, 8), wherein the pliers legs are connected to one another in a crossing region (4) and, for setting different basic opening positions of the pliers mouth, the pliers legs are adjustable in stages in relation to one another by means of a detent pin (15) in the crossing region that is connected to a pliers leg, which detent pin can be fixed differently in an adjusting slot (13) that is formed on the other pliers leg, and wherein a fixing device (18) for fixing a specific basic opening position is provided and the fixing device consists of a counter stop (19), which is formed on the pliers leg having the adjusting slot, and a stop (20), which is formed on the other pliers leg. In order to provide a pair of pliers with which advantageous fixing of the basic opening position can be achieved, it is proposed that the counter stop is assigned to different basic opening positions of the pliers mouth and/or that the counter stop is formed on a fixing part (31) which, when considered in a side view, is formed as congruent with the pliers leg having the adjusting slot, wherein the pliers leg having the adjusting slot is adjustable in relation to the fixing part in a direction of the longitudinal extent of the adjusting slot.

Description

tongs

The invention relates to a pair of forceps with two forceps arms and a forceps jaws formed by jaws, the forceps arms are connected in a Kreu- zungsbereich, wherein further the pliers legs to adjust different basic opening positions of the forceps jaw by means of a connected to the one pliers limb locking pin in the intersection region gradually to each other adjustable, which latching pin is differently festsetz- bar in a formed on the other pliers limb Verstellschlitz, and wherein a fixing device for fixing a certain Zan- genomaul-Grundöffnungsstellung is provided and the fixing device from a formed on the adjusting slot pliers legs counter-stop and an the other pliers leg trained stop exists.

Pliers of the type in question have become known in many ways. For example, EP 0 528 252 A1 (US 5,845,551 A) and WO

2008/049850 AI (US 2010/0064861 AI). Such pliers are known, for example, as water pump pliers.

The forceps limbs are displaceable relative to one another in different basic opening positions, in which basic opening position the mouth jaws, in particular their mutually facing jaw surfaces, form a predetermined angle to one another in a view of the forceps, if necessary parallel to one another. The adjustment of the basic opening position can be achieved by relative displacement of a pliers leg to the other pliers legs by the locking pin is first moved from the detent position to the adjustment slot. In the basic opening position of the forceps jaw, the locking pin is in locking position to the adjustment slot.

The stepwise adjustability allows a very favorable lever ratio. Such a pair of pliers is also known, for example, from DE 10 2011 054 986 A1. Such a pair of pliers is used in particular for applying or removing spring band clips, for which purpose the jaws are preferably provided with corresponding retaining elements.

From the aforementioned patent application is also known a fixing device for fixing a certain pliers mouth basic opening position. The pliers mouth basic opening position may be a closed position of the forceps jaw, which can be fixed via a locking bracket. The stop is given by a pivotable lever which cooperates with a formed on the other pliers leg pin counter-stop.

In view of the known prior art, the invention is concerned with the task to provide a pair of pliers of the type in question, in which an ergonomic and with regard to expended hand forces most favorable fixing the forceps jaw basic opening position can be achieved.

A possible solution to the problem is given according to a first inventive idea in a pair of pliers, which is geared to that the counter-stop is assigned to different basic opening positions of the forceps jaw and / or that the counter-stop is formed on a Festsetzteil, viewed in a side view formed in coverage is to the adjusting slot having pliers legs, wherein the adjustment slot having pliers leg is adjustable in a direction of the longitudinal extension of the adjustment slot relative to the fixing part.

The assignment of the counter-stop to different basic opening positions or the adjustability of the adjusting slot having forceps jaw relative to the counterpart stop having Festsetzteil allows the determination of the forceps jaw in the basic opening position in different Chen forceps jaw widths. In preference to each adjustable over the adjustability of the pliers legs pliers jaw width fixing by means of the fixing device is given so that the mouth jaws are always kept in the respective basic opening position. If, in the basic opening position, the jaw surfaces facing each other are aligned parallel to one another, for example, the jaw surfaces are preferably oriented or nearly correspondingly aligned in each jaw width that is possible via the adjustment possibility.

Thus, the counter-stop can have stages interacting with the stop, which stages are designed and arranged as a function of the different jaw widths to be set. Also, the counter-stop can be formed on a fixing part, which fixing part relative to the movable pliers leg is relatively stuck. The stop can thus interact with the same counter stop or the same counter stop face in each set jaw width.

In a preferred pivotal connection of the fixing part with the adjusting slot having, displaceable against the fixing part pliers legs results in the Festsetzstellung regardless of the given by the Rastein- grip of the locking pin in the adjustment slot set mouth width always with respect to the alignment of the mouth jaws to each other preferably the same or approximately the same basic opening position of the forceps jaw.

The adjustment of the pliers limb having the adjustment slot in a direction of the longitudinal extension of the adjustment slot relative to the fixing part can take place in stages.

Also, the stop may be formed on a part which is arranged in a side view in overlapping to a side surface of the adjustment slot exhibiting the pliers limb. Stop and counter-stop can thus be arranged in the same, given by the adjustment slot having pliers legs, in particular in the region of the adjustment slot given level. The forceps may have a plugged joint. The joint may be formed by the locking pin. Furthermore, the pliers can have an enforcing pliers limb and an overarching pliers limb, wherein preferably the overlapping pliers limb encompasses the enforcing pliers limb like a fork and preferably the adjustment slit is formed in the passing pliers limb. Also, the stopper may be formed on the cross-over forceps legs. The counter-stop can be correspondingly formed on the enforcing tong limb or associated therewith.

In a preferred bifurcated configuration of the cross-over forceps jaw ice, the stop, as also preferably, be arranged between the cross-leg parts, more preferably in a side view in coverage to the associated portion of the enforcing pliers limb.

The counter-stop can be designed to be fixed to the latching pin. Correspondingly, a relative movement of the pliers limb having the adjustment slot relative to the pliers limb holding the latching pin leads to a relative displacement of the pliers limb having the adjustment slot to the counterstop. Thus, further, the counter-stop to the plunger legs having the stop can be arranged to pivot about the pin axis of the catch pin, but fixed with respect to a longitudinal orientation of the adjusting slot, so that in a predetermined angular position of the pliers legs to each other reachable by the interaction of stop and counter-stop Fix set can result. Stop and counter-attack can be arranged and designed so that in the fixed position, ie in the interaction position of stop and Counter stop, the pliers legs regardless of the set mouth width always equal angles to each other and thus always the same basic opening positions or mouth-closed positions result (with different mouth widths).

The stop may be formed on a lever part which is movable about an axis of rotation. The axis of rotation of the lever part can run parallel to the axis of the latching pin or of the joint.

The lever part can be arranged ergonomically favorable, for example for thumb operation.

The counter-stop can be formed on a U-shaped cross-section part, with a U-web and two preferably mutually parallel U-legs.

The U-web may have an opening for the locking pin. The locking pin can be freely movable in the penetration opening about the pin axis. According Ein- or Durchgriffs of the locking pin in or through the penetration opening is the fixing part together with the locking pin relative to the adjustment slot displaced.

One or both U-legs of Festsetzteils can be supported on a side surface of the adjustment slot having pliers legs. In the course of a relative displacement of the adjusting slot having pliers leg to the other

Pliers legs and thus to the locking pin of the adjusting slot having pliers legs between the U-legs of Festsetzteiles slides through, this optionally with lateral support of the U-legs on the side surfaces of the pliers limb. The locking pin may be formed for depression in the direction of a pin longitudinal axis. In this way, a Rastfestlegungsstellung a jaw width, ie, a relative orientation of the forceps arms to each other, be repealed.

By optionally spring-assisted rearward displacement of the locking pin a locking engagement with the adjustment slot is received.

The U-opening of the counterpart stop having Festsetzteils may be open against the depression direction. The fixing part comprises the adjusting slot having pliers legs in such a configuration on three sides.

Also, the counter-stop can be formed in a plan view of the adjusting slot having pliers legs outside of the pliers leg, so for example projecting beyond the forceps jaw facing edge edge course of the pliers limb.

The invention is explained below with reference to the accompanying drawing, which illustrates only exemplary embodiments. A part that is explained only with reference to one of the embodiments and is not replaced in another embodiment due to the special feature there is not replaced by another part, is thus described for this further embodiment as any possible existing part. On the drawing shows:

Fig. 1 is a perspective view of the pliers in a first embodiment; Fig. 2 is the front view of the pliers;

3 shows the side view according to the arrow III in Figure 2;

4 shows the section along the line IV-IV in Figure 3; 5 shows an illustration according to Figure 2, but with respect to a modified mouth opening with recorded in the forceps jaw spring band ring.

Fig. 6 is a perspective detail view of a Festsetzteils pliers;

7 shows a perspective detail view of a lever part of the pliers;

Fig. 8 is a sectional view corresponding to Figure 4, relating to a second embodiment;

Fig. 9 is a representation corresponding to Figure 2, relating to a third embodiment.

The invention is first illustrated and described on the basis of a first exemplary embodiment according to FIGS. 1 to 7 on a pair of pliers 1 in the form of assembly pliers for spring band clamps. The features listed below also relate to other pliers, in particular in different basic opening positions of the pliers muzzle adjustable pliers with locking pin and adjustment slot in the crossing region of the pliers legs, such as a waterpumpenzange as shown in Figure 9.

The forceps 1 has an enforcing tong limb 2 and an overarching forceps limb 3, which forceps limbs 2 and 3 are hinged together in an intersection region 4. On one side, the forceps legs 2, 3 form grip regions 5, 6, which, as shown in the exemplary embodiment, can be covered by grip sleeves. On the other side of the crossing region 4, the pliers limbs 2, 3 form jaw jaws 7, 8, which form a forceps jaw M.

Using the example of a pair of pliers for mounting a spring band clip 11, the jaws 7, 8 further assigned to their free ends holding elements 9, 10, for holding the spring band clamp 11 (see Figure 5). In a further detail, the penetrating pliers limb 2 has an adjustment slot 13 provided with a toothing 12 at least on one of its inner longitudinal sides, which extends in the longitudinal direction of the pliers limb 2. The overlapping pliers limb 3 is formed in the crossing region 4 with a receptacle 14 for a latching pin 15, which at the same time forms a hinge pin. The pin or joint axis is denoted by y.

The latching pin 15 is in the idle state, as shown for example in Figure 2, in meshing engagement with the teeth 12. The jaw width, based on a distance of the locking pin 15 to the upper stationary mouth jaw 7, is fixed. Nevertheless, the mouth jaws 7 and 8 can still be pivoted relative to one another by pivoting the forceps leg 3 relative to the forceps limb 2. To adjust the forceps jaw width, it is according to one embodiment necessary to depress the locking pin 15. In the depressed state, the meshing engagement is canceled and the forceps arms 2, 3 can be freely adjusted to each other. In another embodiment, it is in any case possible to achieve the adjustment of the forceps jaw width from a larger position to a smaller position, without it being necessary to depress the locking pin 15. There is a ratcheting overflow, as in WO 2008/049850 AI (US 2010/0064861 AI) is explained in further detail.

Each support member 9, 10 can be freely rotatably received in the respective forceps jaw 7, 8.

It results in each Zangenmaul- wide position (set on the Rastzapfen- Verstellschlitz- arrangement) a forceps jaw basic opening position, which may correspond to the stop-limited forceps jaw closed position. The limit stop can be given in the area of the pliers legs 2, 3. In the basic opening position, which is also shown in the drawings, the jaw surfaces 16, 17 of the mouth jaws 7, 8 facing each other can be oriented essentially parallel to one another. In any case, it is preferred that the alignment of the jaw surfaces 16, 17 with each other in the respective basic open position is initially approximately rectified in each jaw width position. Only the distance of the jaw surfaces 16 and 17 to each other is changed in dependence on the forceps jaw width position.

There is a need to lock the pliers 1 and the pliers legs 2 and 3 in the respective basic opening position of the forceps jaw M. In the case of the formation of the pliers for mounting a spring band clamp 11, this offers the advantage of keeping the detected and extended by closing the forceps jaw M extended spring band clamp 11 after a corresponding locking of the forceps 1 in the expanded position. A certain state of tension of a mounted spring band clamp can thus be maintained. This facilitates, if appropriate, further assembly or further work in the vicinity of the spring band clip 11.

For this purpose, a fixing device 18 is provided. This fixing device 18 is composed essentially of a counter-stop 19 formed on the passing-through forceps limb 2, which has the adjusting slit 13, and a stop 20 formed on the cross-over forceps limb 3.

The counter-abutment 19 can, as also preferably, be formed in a side view according to the representation in FIG. 3, as seen in overlapping with the passing through forceps limb 2.

According to the first embodiment in Figures 1 to 7, the counter-stop 19 is formed on a U-shaped fixing part 21. The U-web 22 of the U-shaped Festsetzteiles 21 is in one embodiment, on the side facing away from the actuating side of the locking pin 15 wide side surface of the adjusting slot 13 having passing through forceps leg 2, in this case the adjustment slot 13 crossing. For the locking pin 15, a diameter-adapted penetration opening 23 is provided in the U-web 22. The two U-legs 24 and 25 of the fixing part 21 are each supported on a narrow side surface of the pliers arm 2 having the adjusting slot 13, wherein the U-leg 25 facing away from the pliers mouth M forms the counter-stop 19 with a stop step 26.

In essence, the fixing part 21 extends in a region which is covered by the gäiförmigen joint region of the forceps leg 3.

The locking pin 15 is further displaced in the direction of its longitudinal axis y preferably against the force of a return spring, to cancel the locking between locking pin 15 and adjustment slot thirteenth

In addition, by the form-locking connection between locking pin 15 and the U-web 22, the fixing part 21 together with the locking pin 15 and over this with the cross over tong 3 along the adjustment slot 13 displaced and optionally to the pin longitudinal axis y relative to the locking pin 15 adapted to the Whole curvature section-shaped course of Verstellschlitzes 13 rotatably, which rotation is limited by conditioning the U-legs 24, 25 on the side surfaces of the forceps leg 2.

The stop 20 is arranged in a side view according to Figure 3 arranged in coverage to the same side surface of the enforcing pliers leg 2, on which side surface and the counter-stop 19 is provided.

For this purpose, the stop 20 is formed on a lever part 28 which is movable about an axis of rotation x. The axis of rotation x extends parallel to the journal longitudinal axis y. The lever member 28 is disposed between the leg portions of the fork-shaped pliers leg 2 cross-pliers leg 3, wherein the lever portion 28 rotatably halternde axis is secured to the leg portions. The lever part 28 has an actuating portion 29 which can be actuated, for example, by thumb, which, at least in a fixing position, for example according to FIG. 2, is exposed for actuation via the associated narrow edge of the pliers arm 3. The end facing away from the actuating portion 29 is formed finger-like, to form the stopper 20. The finger-like stop 20 is formed for cooperation with the stop step 26 of the counter-stop 19th

In the direction of a fixing release position (with reference to the illustration in Figure 4 in the clockwise direction) is the pivoting of the lever member 28 by a arranged between the leg portions of the pliers leg 3 pin 30, which enters a longitudinal slot 31 of the lever member 28, stop limit.

Further preferably, although not shown, the lever part 28 - further with reference to the illustration in Figure 4 - counter-clockwise direction and thus spring-loaded accordingly in the direction of a setting.

In the Festsetzstellung the stopper 20 occurs against the stop step 26 of the counter-stop 19, whereby the forceps arms 2 and 3 are fixed in the basic opening position of the forceps muzzle M. The fixing is reversible according to actuation of the lever part 28.

The determination can be carried out in any Maulweitenstellung, since according to the fixed design of the counter-attack on the locking pin 15, the relative assignment of stop 20 and counter-stop 19 does not change. Also, according to the schematic representation in Figure 8, the counter-abutment 19 fixed to the adjustment slot 13 having penetrating forceps legs 2 may be formed, so on, for example, by appropriate design of the stop 20 facing narrow side surface of the forceps leg 2. So, such a counter-stop 19 in the extension direction of Verstellschlitzes 13 considered a plurality of spaced abutment stages 26, for cooperation with the stopper 20 in different mouth widening positions of the forceps 1, so that the counter-stop 19 may be assigned to different basic opening positions of the forceps jaw M.

The above explanations serve to explain the inventions as a whole, which further develop the state of the art independently, at least by the following feature combinations, namely:

A pair of pliers 1, which is characterized in that the counter-abutment 19 is assigned to different basic opening positions of the forceps jaw M and / or that the counter-abutment 19 is formed on a fixing part 21, which, viewed in a side view, is formed as an overlap with the adjustment slot 13 having pliers legs 2, wherein the adjustment slot 13 having pliers legs 2 in a direction of the longitudinal extent of the adjustment slot 13 relative to the fixing part 21 is adjustable.

A pair of pliers characterized in that the stopper 20 is formed on a part which is overlapped in a side view to a side surface of the pliers leg 2 having the adjustment slot 13.

A pair of pliers, which is characterized in that the pliers 1 has a plugged joint, with an enforcing pliers leg 2 and a cross-tongues 3, and that the stopper 20 is formed on the cross-tongar leg 3. A pair of pliers, which is characterized in that the stopper 20 is arranged on the cross-tongar leg 3 between the cross-leg parts.

A pair of pliers, which is characterized in that the counter-stop 19 is formed fixed to the locking pin 15.

A pair of pliers, which is characterized in that the stop 20 is formed on a lever part 28 which is movable about an axis of rotation x.

A pair of pliers, which is characterized in that the counter-stop 19 is formed on a U-shaped part in cross-section. A pair of pliers, which is characterized in that a U-web 22 has an enforcement opening 23 for the locking pin 15.

A pair of pliers, which is characterized in that one or both U-legs 24, 25 are supported on a side surface of the pliers leg 2 having the adjustment slot 13.

A pair of pliers, which is characterized in that the locking pin 15 is formed for depression in the direction of a pin longitudinal axis. A pair of pliers, which is characterized in that the U-opening of the counterpart stop 19 having Festsetzteils 21 is formed open against the low pressure direction.

A pair of pliers, which is characterized in that the counter-stop 19 is formed in a plan view of the adjustment slot 13 having pliers legs 2 outside of the pliers arm 2. All disclosed features are essential to the invention (individually, but also in combination with one another). The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize with their features independent inventive developments of the prior art, in particular to make on the basis of these claims divisional applications.

LIST OF REFERENCE NUMBERS

1 pliers 25 U-legs

2 pliers legs 26 stop step

3 pliers legs 27

4 crossing area 28 lever part

5 handle portion 29 operating section

6 grip area 30 pin

7 mouth jaw 31 longitudinal slot

8 mouth jaw

9 retaining element

10 retaining element

11 spring band clamp

12 toothing

13 adjustment slot x rotation axis

14 receptacle y pin longitudinal axis

15 locking pins

16 Jaw surface M Forceps jaw

17 jaw surface

18 fixing device

19 counter-attack

20 stop

21 fixing part

22 underground bridge

23 Enforcement opening

24 U-legs

Claims

1. pliers (1) with two pliers limbs (2, 3) and a forceps jaw (M) formed by mouth jaws (7, 8), wherein the pliers legs (2, 3) in an intersection region (4) are interconnected, wherein further Zangenschenkel (2, 3) for setting different basic opening positions of the pliers mouth (M) by means of a pliers limb (3) connected to the locking pin (15) in the crossing region (4) are gradually adjustable to each other, which locking pin (15) in a Adjustment slot (13) formed in the other pliers leg (2) can be fixed differently, and a fixing device (18) is provided for fixing a certain pliers jaw basic opening position and the fixing device (18) consists of a pliers limb (2) provided on the adjustment slot (13) ) formed counter-stop (19) and one at the other pliers leg (3) formed stop (20), characterized in that the counter-stop (19) different is associated with the basic opening positions of the forceps jaw (M) and / or that the counter-stop (19) is formed on a fixing part (21) which, viewed in a side view, is designed to overlap with the forceps limb (2) having the adjustment slot (13) the pliers limb (2) having the adjusting slot (13) is adjustable relative to the fixing part (21) in a direction of the longitudinal extension of the adjusting slot (13).

2. Pliers according to claim 1, characterized in that the stop (20) is formed on a part which is arranged in a side view in coverage to a side surface of the adjusting slot (13) having pliers limb (2).

3. Pliers according to one of the preceding claims, characterized in that the pliers (1) has a plugged joint, with an enforcing tong limb (2) and an overlapping pliers legs (3), and the stop (20) is formed on the cross-over tong limb (3), and / or, preferably, that the stop (20) is arranged on the cross-over tong limb (3) between the overlapping leg parts.

Pliers according to one of the preceding claims, characterized in that the counter-stop (19) is designed to be stationary relative to the latching pin (15).

Pliers according to one of the preceding claims, characterized in that the stop (20) is formed on a lever part (28) which is movable about an axis of rotation (x).

Pliers according to one of the preceding claims, characterized in that the counter-abutment (19) is formed on a part which is U-shaped in cross section, and / or, preferably, that a U-web (22) has an insertion opening (23) for the latching pin (23). 15), and / or, preferably, that one or both U-legs (24, 25) on a side surface of the adjusting slot (13) having pliers limbs (2) are supported.

Pliers according to one of the preceding claims, characterized in that the latching pin (15) is designed for depression in the direction of a pin longitudinal axis.

Pliers according to one of the preceding claims, characterized in that the U-opening of the fixing stop (21) having the counterstop (19) is designed to be open against the low-pressure direction.

Pliers according to one of the preceding claims, characterized in that the counter-abutment (19) in a plan view of the adjustment slot (13) having forceps legs (2) outside the pliers limb (2) is formed. Forceps characterized by one or more of the characterizing features of any one of the preceding claims.