EP2773490B1 - Pliers - Google Patents

Description

The invention relates to pliers with holding elements for detecting ends of a spring band clamp.

Pliers of this type have already become known in many different ways. It is, for example, on the DE 92 16 463 U1 and the EP 0 677 357 A1 ( US 5590573 A ) referred. In the known pliers for mounting a spring band clamp, there is sometimes a large opening of the pliers legs in the grip area due to the large opening width of the pliers mouth. In view of the desired large opening width of the pliers mouth, no favorable lever ratios can be achieved.

From the US 3383963 A a pair of pliers for detecting ends of spring band clamps is known, in which the pliers mouth can be changed by a sliding movement without being ascertainable. From the US 6128975 A A pair of pliers for holding spring band clamps is known, in which the pliers legs, which can be pivoted relative to one another in a fixed joint, can be adjusted by means of a screw adjustment with regard to a minimum opening width of the pliers mouth. The US 7313984 B1 describes a bracket for spring band clamps that can be operated according to the Bowden cable principle. From the US 2009/0064823 A1 is comparable to US '975 A a pair of pliers with pliers legs connected in a fixed joint is known, in which by a Locking setting a pliers jaw width can be determined. From the DE 4440210 A1 a pair of pliers for holding spring band clamps is known, in which a pliers mouth width can be set, with pivotable pliers levers connected in a fixed joint. The EP 1829647 A2 , DE 202005013501 U1 and DE 102007049032 A1 disclose pliers that are gradually adjustable to change the size of the pliers mouth in a crossover area of the pliers legs, wherein one pliers leg also has an adjustment slot with teeth that extends in the longitudinal direction of the pliers leg and the other pliers leg with a hinge pin that penetrates the adjustment slot , is formed, with the hinge pin also being in toothed engagement with the toothing in the idle state. The jaw width, based on a distance between the hinge pin and an upper, fixed jaw, can be fixed, but the jaws can still be pivoted relative to one another by pivoting the tong legs.

From the WO99 / 44790 A1 a self-adjusting pliers is known, in which a pawl which brings about the teeth is not in engagement with the teeth in the idle state. The jaws can only be adjusted according to a workpiece that is actually gripped.

Based on the state of the art, the invention is concerned with the task of advantageously designing pliers for holding spring band clamps.

This object is solved by claim 1.

It is preferred that a rotatable mounting element is formed with a central recess and circumferentially distributed three or more tip regions. It is essential that a mounting element is thus both suitable for holding one end and the other end of a spring band clamp, which are designed differently. While one end of a spring band clamp usually has a narrower, hook-like extension, the other end of the spring band clamp has the entire width of the

Spring band usually occupying flat end region. The fact that the holding elements are also preferably identical to one another, and are preferably identical parts, also simplifies this, also in the handling of the pliers. The user does not have to pay attention to which end of the spring band clamp he assigns to which jaw of the pliers mouth when the spring band clamp is picked up.

It is also preferred that the width of a mounting element is adapted to the width of the jaw. In particular, it is preferred that a mounting element does not protrude over the jaw, or only slightly, in the width direction.

In further detail, it is preferred that a mounting element has four tip areas. In addition, the tip areas, in particular the four tip areas mentioned, are also distributed circumferentially with the same circumferential distance.

Last but not least, it is also preferred that a closed position of the pliers mouth can be locked. This can be achieved, for example, by means of locking brackets known per se in the area of the pliers legs.

Fig. 1

eine perspektivische Ansicht der Zange;

Fig. 2

eine Seitenansicht der Zange mit aufgenommenem Federbandring;

Fig. 3

eine Darstellung gemäß Fig. 2, mit angedeuteter Verriegelungseinrichtung;

Fig. 4

eine Seitenansicht gemäß Fig. 2 bzw. Fig. 3, von der gegenüberliegenden Seite, ohne Federbandschelle;

Fig. 5

eine Detailansicht, geschnitten, einer Zangenmaulbacke mit darin aufgenommenem Halterungsteil; und

Fig. 6

eine Einzeldarstellung eines Halterungselementes.

The invention is explained below with reference to the accompanying drawing, which, however, only represents an exemplary embodiment. Here shows:

Fig. 1

a perspective view of the pliers;

Fig. 2

a side view of the pliers with recorded spring band ring;

Fig. 3

a representation according to Fig. 2 , with indicated locking device;

Fig. 4

a side view according to Fig. 2 or. Fig. 3 , from the opposite side, without spring band clamp;

Fig. 5

a detailed view, sectioned, of a jaw jaw with the mounting part received therein; and

Fig. 6

a detailed view of a mounting element.

Is shown and described, initially with reference to Fig. 1 , a pair of pliers 1 with two pliers legs 2, 3, which are connected to one another in an articulated manner in an intersection area 4. The pliers legs 2, 3 form grip areas 5, 6 on one side, which, as in the exemplary embodiment, can be covered by grip sleeves. On the other side of the intersection area 4, the pliers legs 2, 3 form jaws 7, 8, which form a pliers mouth M. The jaws 7, 8 are further assigned their free ends to holding elements 9, 10 for holding a spring band clamp 11, see Figures 2 , 3rd .

In more detail, the one pliers leg 2 has an adjustment slot 13, which is provided with teeth 12 at least on one of its inner longitudinal sides and extends in the longitudinal direction of the pliers leg 2. The other pliers leg 3 is formed in the intersection area 4 with a receptacle 14 for a hinge pin 15. The hinge pin 15 is at rest, such as in Fig. 2 is shown in meshing engagement with the toothing 12. The mouth width, based on a distance of the hinge pin 15 to the upper fixed jaw 7, is fixed. Nevertheless, the jaws can 7 and 8 can still be pivoted relative to one another by pivoting the pliers arm 3 relative to the pliers arm 2.

In order to adjust the jaw width, according to one embodiment it is necessary to press down the hinge pin 15. In the depressed state, the toothing engagement is canceled and the tong legs 2, 3 can be freely adjusted relative to one another. In another embodiment, it is in any case possible to achieve the adjustment of the jaw opening from a larger position to a smaller position without it being necessary to depress the hinge pin. There is a rattling overflow, as in the WO 2008/049850 A1 ( US 20100064861 A1 ), see. in particular Figures 1 to 6 and associated description, for example explained in further detail.

Each bracket element 9, 10 is rotatably received in a jaw jaw 7 and 8, respectively. In principle, however, a fixed mounting element 9 and / or 10 can also be provided due to the crown-like design of a mounting element 9, 10 provided here.

In reference to Fig. 5 the inclusion of a mounting element 9 in a jaw jaw 7 is shown.

The forceps jaw 7 has a bore 18 which runs transversely to its opening direction and in which a neck section 19 of the holding element 9 is received. In further detail, the neck section 19 has a circumferential groove 20 which is rounded at the bottom. In the exemplary embodiment for the rotatable mounting of the mounting element 9, a cotter pin 22 is accommodated in a transverse bore 21 to the bore 18, which pin takes out the Holding element 9 prevents, but nevertheless allows rotation of the holding element 9.

The crown area 23, which is larger in diameter than the neck section 19, is seated on the outside on the associated surface of the jaw 7.

A mounting element 9, 10 is shown in more detail in Fig. 6 shown.

It is essential that a central recess 16 of the holding element 9, 10 is surrounded by four tip regions 17 in the exemplary embodiment. As indicated by dash-dotted lines, both ends E ₁ , which are wider than the width b of the mounting element, can be securely accommodated in this way, as well as ends E _{2 of} a spring band clamp, which are narrower than the width b. They then dip into the recess 16 and are thus held in the recess 16.

Between the tip regions 17, depressions 24 are formed on the bottom side in the profile, which preferably run in the form of a circular segment in the said profile. The ends E ₁ can only be seen on the depressions 24, while the ends E ₂ can sit in the middle and deeper into the recess 16.

In reference to Fig. 3 a locking device 25 is indicated. Any suitable locking device can be used here. It is shown only by way of example that it can be a locking bolt 26 which has a plurality of latching recesses 27 on one side, which can cooperate with a latching pin 28. While the locking latch 26 rotates, as indicated by a pivot 29 one pliers leg 3 can be attached, the locking pin 28 is attached to the other pliers leg 2. The different latching recesses can be used to fix different pivot opening positions of the jaw jaws 7, 8 with respect to one another, with a selected fixed jaw opening width.

A certain tension state of a spring clip can be maintained.

Reference symbol list:

1

Pliers

2nd

Pliers legs

3rd

Pliers legs

4th

Crossing area

5

Grip area

6

Grip area

7

Jaw

8th

Jaw

9

Bracket element

10th

Bracket element

11

Spring band clamp

12th

Gearing

13

Adjustment slot

14

admission

15

Hinge pin

16

deepening

17th

Top areas

18th

drilling

19th

Neck section

20

Groove

21

Cross hole

22

Cotter pin

23

Crown area

24th

Sinking

25th

Locking device

26

Locking latch

27

Notch

28

Locking pin

29

Swivel

E ₁

The End

E ₂

The End

M

Forceps mouth

b

width

Claims (5)

1. Pliers (1) having two pliers legs (2, 3) and a pliers mouth (M) formed by jaws (7, 8), wherein crown-like rotatable or stationary holding elements (9) are arranged in the pliers mouth (M) relative to a jaw (7, 8) for gripping ends of a spring band clamp (11), wherein the stationary holding elements (9, 10) have a central recess (16) and three or more tip regions (17) which are distributed on the circumference of said central recess, and the pliers legs (2, 3) are connected to one another in an intersection region (4), wherein the pliers legs (2, 3) are adjustable relative to one another in a stepwise manner in the intersection region (4) in order to change the size of the pliers mouth (M), one of the pliers legs (2) has an adjustment slot (13) which is provided at least on one of its inner longitudinal sides with a toothing (12) and which extends in the longitudinal direction of the pliers leg (2), the other pliers leg (3) is formed in the intersection region (4) so as to have a receptacle (14) for a hinge pin (15) and the hinge pin (15) is in toothed engagement with the toothing (12) when at rest, wherein the mouth width, based on a distance of the hinge pin (15) from the upper stationary jaw (7), is fixed, but the jaws (7 and 8) can still be pivoted relative to one another by pivoting the pliers leg (3) relative to the pliers leg (2).
2. Pliers according to claim 1, characterised in that a rotatable holding element (9, 10) is formed having a central recess (16) and three or more tip regions (17) which are distributed on the circumference of said central recess.
3. Pliers according to either of the preceding claims, characterised in that the holding elements (9, 10) are identical to one another.
4. Pliers according to either of the preceding claims, claim 2 or claim 3, characterised in that four tip regions are formed (17).
5. Pliers according to any of the preceding claims, characterised in that a closed position of the pliers mouth (M) can be locked.

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