DE102015102046A1 - tongs - Google Patents

Abstract

The invention relates to a pair of pliers (1) with two pliers limbs (2, 3) and a forceps jaw (M) formed by mouth jaws (7, 8), wherein the pliers limbs are connected together in an intersection region (4) and the pliers limbs for setting different basic open positions of the forceps jaw by means of a connected with a pliers limb latching pin (15) in the intersection are gradually adjustable to each other, which locking pin is set differently in a formed on the other pliers limb Verstellschlitz (13), and wherein a fixing device (18) for fixing a certain basic opening position is provided and the fixing device consists of a on the adjusting slot having pliers legs formed counter-stop (19) and formed on the other pliers leg stop (20). In order to specify a pliers in which a favorable fixing of the basic opening position can be achieved, it is proposed that the counter-stop be assigned to different basic opening positions of the forceps jaw and / or that the counter-stop be formed on a fixing part (21) which, viewed in a side view, forms an overlap is also the adjustment slot having pliers legs, wherein the adjustment slot having pliers legs in a direction of the longitudinal extension of the adjustment slot is adjustable relative to the fixing part.

Description

The invention relates to a pair of forceps with two forceps arms and a forceps jaw formed by jaws, the forceps arms are connected to each other in an intersection region, wherein further the forceps arms to adjust different basic opening positions of the forceps jaw by means of a pliers limb connected to the locking pin in the intersection region are gradually adjustable to one another which detent pin is differently fixable in an adjustment slot formed on the other pliers limb, and wherein a fixing device for fixing a certain pliers jaw basic opening position is provided and the fixing means consists of a counter-stopper formed on the pliers leg having the adjustment slot and a stopper formed on the other pliers leg ,

Pliers of the type in question have become known in many ways. It is for example on the EP 0 528 252 A1 ( US 5,845,551 A ) and the WO 2008/049850 A1 ( US 2010/0064861 A1 ). Such pliers are known, for example, as water pump pliers.

The pliers legs are displaceable in different basic opening positions relative to each other, in which basic opening position the jaw jaws, in particular their mutually facing jaw surfaces in a view of the pliers form a predetermined angle to each other, optionally parallel to each other. 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.

Also, such a pair of pliers, for example, from DE 10 2011 054 986 A1 known. Such a pair of pliers is used in particular for applying or removing spring band clamps, 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 legs in a direction of the longitudinal extension of the adjustment slot is adjustable relative to the fixing part.

The assignment of the counter-stop to different basic opening positions or the adjustability of the adjustment slot having pliers leg relative to the counterpart stop having Festsetzteil allows the fixing of the forceps jaw in the basic opening position in different 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 may have stages cooperating with the stop, which stages are formed and arranged depending on 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 cooperate with the same counter-stop or the same counter-stop face in each set jaw width.

In a preferred pivotal connection of the Festsetzteiles with the adjustment slot having, opposite the Festsetzteil displaceable pliers legs results in the Festsetzstellung regardless of the given by the locking engagement of the locking pin in the adjusting slot adjusted 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 adjustment slot having pliers leg in a direction of the longitudinal extent of the adjustment slot relative to the fixing part can be done gradually.

Also, the stop may be formed on a part which is arranged in a side view in overlap with a side surface of the adjustment slot having 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 may have an enforcing pliers limb and an overlapping pliers limb, wherein preferably the overlapping pliers limb comprises 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 limb, the stop, as well as preferably be arranged between the cross-leg parts, more preferably in a side view in overlap with 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 stopper having pliers legs may be pivotally mounted about the journal axis of the locking pin, but fixed with respect to a longitudinal orientation of the adjustment slot, so that in a predetermined angular position of the pliers legs to each other, the achievable by the interaction of stop and counter stop Festsetzstellung arise can.

Stop and counter stop can be arranged and designed so that in the fixed setting, d. H. in the cooperative position of stop and counter stop, the forceps arms 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 (at 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 part in cross-section, 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 adjustment 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, 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. This allows a Rastfestlegungsstellung a mouth width, d. H. a relative orientation of the pliers legs 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:

1 a perspective view of the forceps in a first embodiment;

2 the front view of the pliers;

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

4 the section according to the line IV-IV in 3 ;

5 a representation according to 2 , but with respect to a modified mouth opening with recorded in the forceps jaw spring band ring;

6 a perspective individual representation of a fixing part of the pliers;

7 a perspective individual representation of a lever part of the pliers;

8th one of the 4 corresponding sectional view relating to a second embodiment;

9 one of the 2 corresponding representation, relating to a third embodiment.

The invention is first illustrated and described with reference to a first 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, especially in different basic opening positions of the pliers muzzle adjustable pliers with locking pin and Verstellschlitz in the crossing region of the pliers legs, such as a water pump pliers as shown in FIG 9 ,

The forceps 1 has an enforcing pliers leg 2 and an overarching pliers leg 3 on which pliers legs 2 and 3 in a crossing area 4 are hinged together. On one side, the pliers legs form 2 . 3 grip areas 5 . 6 from, which, as shown in the embodiment, can be covered by grip sleeves. On the other side of the crossing area 4 form the pliers legs 2 . 3 jaw jaw 7 . 8th from, which form a forceps M.

The example of a pair of pliers for mounting a spring band clip 11 have the mouth cheeks 7 . 8th further assigned their free ends holding elements 9 . 10 on, to hold the spring band clamp 11 (please refer 5 ).

In further detail, the enforcing pliers legs 2 one at least on one of its inner longitudinal sides with a toothing 12 provided adjustment slot 13 on, extending in the longitudinal direction of the forceps leg 2 extends. The overarching pliers leg 3 is in the crossing area 4 with a recording 14 for a locking pin 15 formed, which also forms a hinge pin. The pin or joint axis is denoted by y.

The locking pin 15 is at rest, such as in 2 shown, in meshing engagement with the toothing 12 , The jaw width, based on a distance of the locking pin 15 to the upper fixed jaw 7 , is fixed. Nevertheless, the mouth cheeks 7 and 8th still relative to each other, by pivoting the pliers leg 3 relative to the pliers leg 2 to be pivoted.

To adjust the forceps jaw width, it is necessary according to an embodiment, the locking pin 15 depress. In the depressed state, the toothed engagement is canceled and the pliers legs 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, the locking pin 15 depress. It results in a ratcheting overflow, as in the WO 2008/049850 A1 ( US 2010/0064861 A1 ) is explained in further detail.

Each support element 9 . 10 can rotate freely in the respective forceps jaw 7 . 8th be included.

It results in each forceps jaw width setting (set on the locking pin adjustment slot arrangement) a forceps jaw basic opening position, which may correspond to the stop-limited forceps jaw closed position. The stop limit can in the area of the pliers legs 2 . 3 be given.

In the basic opening position, which is also shown in the drawings, the mutually facing jaw surfaces 16 . 17 the mouth cheek 7 . 8th be aligned substantially parallel to each other. In any case, it is preferred that in each forceps jaw width adjustment of the alignment of the jaw surfaces 16 . 17 is initially approximately rectified to each other in the respective basic opening position. Only the distance of the jaw surfaces 16 and 17 each other is changed depending on the forceps jaw width.

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

It is a fixing device for this purpose 18 intended. This fixing device 18 is essentially composed of one on the adjustment slot 13 having passing through pliers legs 2 trained counter-attack 19 and one on the overarching pliers leg 3 trained stop 20 ,

The counter-attack 19 can, as also preferred, in a side view as shown in FIG 3 considered to be overlapping formed to the enforcing pliers legs 2 ,

According to the first embodiment in the 1 to 7 is the counter-attack 19 on a U-shaped fixing part 21 formed.

The underground bridge 22 of the U-shaped fixing part 21 lies in an embodiment area on the actuating side of the locking pin 15 opposite broad side surface of the adjustment slot 13 having passing through pliers leg 2 on, here the adjustment slot 13 traversing. For the locking pin 15 is in the subway 22 a diameter-matched penetration opening 23 intended. The two U-thighs 24 and 25 of the fixing part 21 are each supported on a narrow side surface of the adjustment slot 13 having pliers leg 2 from, the forceps jaw M remote from the U-leg 25 the counter-attack 19 with a stop step 26 shaped.

In essence, the fixing part extends 21 in a region of the fork-shaped joint region of the forceps leg 3 is covered.

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 13 ,

In addition, by the positive connection between locking pin 15 and the subway 22 the fixing part 21 together with the locking pin 15 and above it with the overarching pliers leg 3 along the adjustment slot 13 displaced and optionally about the journal longitudinal axis y relative to the locking pin 15 adapted to the total curve portion-shaped course of the adjustment slot 13 rotatable, which rotation by planting the U-legs 24 . 25 on the side surfaces of the pliers leg 2 is restricted.

Also the stop 20 is in a side view according to 3 arranged in overlap to the same side surface of the enforcing pliers limb 2 arranged on which side surface and the counter-attack 19 is provided.

This is the stop 20 on a lever part which is movable about an axis of rotation x 28 educated. The axis of rotation x extends parallel to the journal longitudinal axis y.

The lever part 28 is between the leg parts of the fork-shaped pliers legs 2 cross-over pliers leg 3 arranged, wherein the lever part 28 rotatably supporting axis is attached to the leg parts.

The lever part 28 has an example thumb actuable operating section 29 on, at least in a Festsetzstellung example according to 2 over the associated narrow edge of the pliers leg 3 exposed for operation.

That the operating section 29 opposite end is formed finger-like, to form the stop 20 , The finger-like stroke 20 is formed to interact with the stop step 26 of the counter-attack 19 ,

Toward a locking release position (with reference to the illustration in FIG 4 in clockwise direction) is the pivoting of the lever part 28 by one between the leg parts of the pliers limb 3 arranged pin 30 which is in a longitudinal slot 31 of the lever part 28 retracts, stops limited.

More preferably, although not shown, is the lever part 28 - further with reference to the illustration in 4 - Counterclockwise and thus spring-loaded accordingly in the direction of fixing.

In the fixed position, the stop occurs 20 against the stop step 26 of the counter-attack 19 , bringing the pliers legs 2 and 3 are set in the basic opening position of the forceps muzzle M. The fixing is reversible due 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 allocation of stop 20 and counter-attack 19 not changed.

Also, according to the schematic representation in FIG 8th the counter-attack 19 firmly with the adjustment slot 13 having passing through pliers legs 2 be formed, so on, for example, by appropriate design of the stop 20 facing narrow side surface of the pliers limb 2 , So can such a counter-attack 19 in the extension direction of the adjustment slot 13 considers several spaced stop stages 26 have, for cooperation with the stop 20 in different jaw positions of the pliers 1 so that the counter-attack 19 different basic opening positions of the forceps jaw M can be assigned.

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 pincer 1 , which is characterized in that the counter-attack 19 assigned to different basic opening positions of the forceps jaw M and / or that the counter-attack 19 on a fixing part 21 is formed, which viewed in a side view is formed in coverage to the adjustment slot 13 having pliers legs 2 , where the 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, which is characterized in that the stop 20 is formed on a part which is arranged in a side view in overlap with a side surface of the adjustment slot 13 having pliers leg 2 ,

A pair of pliers, which is characterized by the pliers 1 a plugged joint, with an enforcing tong limb 2 and an overarching pliers leg 3 , and that the stop 20 on the overarching pliers leg 3 is trained.

A pair of pliers, which is characterized in that the stop 20 on the overarching pliers leg 3 is arranged between the cross-leg parts.

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

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

A pair of pliers, which is characterized in that the counter-attack 19 is formed on a cross-sectionally U-shaped part.

A pair of pliers, which is characterized by a U-web 22 an enforcement opening 23 for the locking pin 15 having.

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

A pair of pliers, which is characterized in that the locking pin 15 is designed for depression in the direction of a pin longitudinal axis.

A pair of pliers, which is characterized in that the U-opening of the counter-stop 19 having Festsetzteils 21 formed open against the low pressure direction.

A pair of pliers, which is characterized in that the counter-attack 19 in a plan view of the adjustment slot 13 having pliers legs 2 outside the pliers leg 2 is trained.

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

tongs

2

pliers legs

3

pliers legs

4

crossing area

5

grip area

6

grip area

7

jaw jaw

8th

jaw jaw

9

supporting member

10

supporting member

11

Spring clip

12

gearing

13

adjustment slot

14

admission

15

latching pin

16

baking surface

17

baking surface

18

Setting means

19

counterstop

20

attack

21

Immobilizing part

22

U-web

23

enforcement opening

24

U-leg

25

U-leg

26

stop step

27

28

lever part

29

actuating section

30

pen

31

longitudinal slot

x

axis of rotation

y

Zapf longitudinal axis

M

beaks

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0528252 A1 [0002]
• US 5845551 A [0002]
• WO 2008/049850 A1 [0002, 0042]
• US 2010/0064861 A1 [0002, 0042]
• DE 102011054986 A1 [0005]

Claims (10)

Pliers ( 1 ) with two pliers legs ( 2 . 3 ) and a jawbone ( 7 . 8th ) formed pliers mouth (M), wherein the pliers legs ( 2 . 3 ) in a crossing area ( 4 ), wherein further the pliers legs ( 2 . 3 ) for setting different basic opening positions of the forceps jaw (M) by means of one with the one pliers limb ( 3 ) associated locking pin ( 15 ) in the crossing area ( 4 ) are adjustable in stages to each other, which locking pin ( 15 ) in one at the other pliers leg ( 2 ) trained adjustment slot ( 13 ), and a fixing device ( 18 ) is provided for the fixing of a given jaw opening position and the fixing device ( 18 ) from one at which the adjustment slot ( 13 ) having pliers legs ( 2 ) trained counter-attack ( 19 ) and one at the other pliers leg ( 3 ) trained stop ( 20 ), characterized in that the counter-stop ( 19 ) is associated with different basic opening positions of the forceps jaw (M) and / or that the counter-abutment ( 19 ) on a fixing part ( 21 ) is formed, which viewed in a side view is formed in coverage to which the adjustment slot ( 13 ) having pliers legs ( 2 ), whereby 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. Pliers according to claim 1, characterized in that the stop ( 20 ) is formed on a part which is arranged in a side view in overlapping to a side surface of the adjustment slot ( 13 ) having forceps ( 2 ). 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 leg ( 3 ), and that the attack ( 20 ) on the overarching pliers leg ( 3 ), and / or, preferably, that the stop ( 20 ) on the overarching pliers leg ( 3 ) is arranged between the cross-leg parts. Pliers according to one of the preceding claims, characterized in that the counter-stop ( 19 ) fixed to the locking pin ( 15 ) is trained. Pliers according to one of the preceding claims, characterized in that the stop ( 20 ) on a lever part () which is movable about an axis of rotation (x) ( 28 ) is trained. Pliers according to one of the preceding claims, characterized in that the counter-stop ( 19 is formed on a cross-sectionally U-shaped part, and / or, preferably, that a U-web ( 22 ) an enforcement opening ( 23 ) for the locking pin ( 15 ), and / or, preferably, that one or both U-legs ( 24 . 25 ) on a side surface of the adjustment slot ( 13 ) having forceps ( 2 ) are supported. Pliers according to one of the preceding claims, characterized in that the locking 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 counter-stop ( 19 ) having fixing part ( 21 ) is open against the low pressure direction. Pliers according to one of the preceding claims, characterized in that the counter-stop ( 19 ) in a plan view of the adjustment slot ( 13 ) having pliers legs ( 2 ) outside of the forceps leg ( 2 ) is trained. Forceps characterized by one or more of the characterizing features of any one of the preceding claims.

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