TW201505787A - Pincer clamp - Google Patents

Abstract

The present invention relates to a pincer clamp having an articulation, which has two clamp arms mutually connected by the articulation. The clamp arms are divided into a hand lever segment, a transition segment, and a head segment having the clamping jaw plate. The second clamping jaw plate protrudes laterally with respect to the adjacent transition segment. The other first clamping jaw plate has an included angle of about 35 DEG~ 55 DEG with respect to the adjacent transition segment. The S-shaped inner outline of the clamping jaw plate has a sawtooth outline attached with teeth in the case of constituting the bite. The bite is a parallelogram when the tips of clamping jaw plate contact each other. The longer inner outline of the bite is constituted by the sawtooth outline with the teeth whose cross sections have the unequal-length side surfaces. The shorter inner outline of the bite and the inner outline of the tip of the clamping jaw plate are constituted by the sawtooth outline with the teeth whose cross sections have the equal-length side surfaces. The bite is configured in such a way that the longer second sawtooth outline extends linearly in the second clamping jaw plate. The longer first sawtooth outline in the first clamping jaw plate extends toward the second sawtooth outline in a protrusive manner.

Description

clamp

The present invention relates to a clamp having an adjustable joint according to the features of the prior art of claim 1.

This clamp in the range of EP 0 528 252 A1 is considered prior art. The clamp has two jaw arms coupled to each other by a joint, the jaw arms being respectively divided into a handle section, a transition section and a head section having a clamping jaw. The second clamping jaw is laterally projecting relative to the adjacent transition section, while the further first clamping jaw is disposed at an angle of 45° with respect to the adjacent transition section. The inner contour of the clamping jaw is constructed to form an S shape. Thus, in the case where the tips of the clamping jaws are in contact with each other, a parallelogram jaw is formed by the clamping jaws. The inner contour of the long jaw is constructed to have a sawtooth profile with triangular teeth in the longitudinal section. The inner contour of the clamping jaw next to the jaws also has a sawtooth profile with teeth which are triangular in the longitudinal section.

According to the prior art, the object of the invention is to further improve the known clamps as follows, so that the assembly personnel are significantly simplified even in difficult assembly situations and in the case of better application to objects over extended periods of time. operating.

According to the invention, the solution to achieve this object lies in the features of claim 1.

The objects of the technical solutions 2 to 17 are advantageous developments of the invention.

According to the invention, the inner contour of the length of the now parallelogram jaw is constituted by a sawtooth profile with teeth having unequal length sides in the longitudinal section, while the short inner contour of the jaw and the inner end of the clamping jaw The profile is made up of a sawtooth profile with teeth with equal length sides in the longitudinal section Composition. It is also important that the long second sawtooth profile of the jaws disposed in the second clamping jaw extends linearly, while the long first sawtooth profile in the first clamping jaw protrudes toward the second sawtooth profile. Extend the ground.

In particular, the clamps constructed below have the advantage in their use as water pump pliers, namely that on the one hand the workpiece can be clamped reliably by the tip of the clamping jaw and the operation is carried out, and on the other hand by the parallelogram jaws The special construction, in view of the special sawtooth profile provided there, is perfect for clamping circular or polygonal cross-sections in all applications, the surface of which may be soiled by, for example, lubricants and only weakly resistant Sliding objects and reliable operation.

When the teeth of the sawtooth profile on the inside of the tip are positively engaged with each other, the long sides of the teeth of the long zigzag profile in the jaws are almost parallel to each other and to the central longitudinal plane intersecting the teeth of the sawtooth profile on the inside of the tip end. Settings.

Also in this aspect, the average distance of the long first serration profile of the jaws relative to the long second serration profile is preferably 4.5 mm.

The height of the teeth of the long second sawtooth profile in the jaws is 0.52 mm, while the height of the teeth of the long first sawtooth profile is 0.58 mm. In other words, the teeth of the serrated profile that extend convexly in the jaws are constructed to be higher than the teeth of the zigzag profile extending in a straight line.

The clamping of the object by the clamp and its reliable operation after clamping are improved by the fact that between the short side of the long serrated contour of the jaw and the long side of the corresponding adjacent tooth The opening angle is 105°. In addition, when the teeth of the sawtooth profile on the inside of the tip are positively engaged with each other, the angle between the short side of the tooth of the long sawtooth profile in the jaw and the central longitudinal plane intersecting the tooth of the sawtooth profile on the inside of the tip It is 70°.

In addition, it has proven to be advantageous if the height of the teeth of the short zigzag profile in the jaws is 0.36 mm.

When the teeth of the sawtooth profile of the tip are positively engaged with each other, the long zigzag profile in the jaw is preferably relative to the central longitudinal plane intersecting the teeth of the sawtooth profile on the inside of the tip. Set at an angle of 15°.

The angle between the long zigzag profile provided in the jaws and the adjacent short zigzag profile is 135°.

The angle between the short serrations of the serrations on the inside of the tip, the short serrations in the jaws, and the two teeth of the equal length of the serrations on the side of the jaws facing the tip are 90°.

The length of the jaws is preferably 21.4 mm.

A further improvement of the operation of the clamp is achieved by the fact that when the teeth of the sawtooth profile on the inside of the tip are positively engaged with each other, the internal sawtooth profile facing away from the tips and extending beside the jaws extends linearly, The teeth are arranged at a distance from each other and are provided with teeth of equal length in the longitudinal section. In addition, the following situation is meaningful in this case: the internal serrations facing away from the tip and located next to the jaws are arranged at an angle of 2.4° from each other with respect to the tip.

A semi-circular recess is formed in the internal serrated profile of the second clamping jaw adjacent to the jaws. The recess has a radius of 2 mm.

Finally, in the clamp according to the invention, there is also the advantage that a caliper arm has a longitudinal slit in its transition section and the other caliper arm passes through the longitudinal slit with its transition section and has a long shape with a sawtooth profile. a hole, wherein a locking member is supported in the second caliper arm so as to be linearly movable, and the first caliper arm is rotatable about the locking member. In this way, the various relative positions of the caliper arms can be adjusted by the locking element, in which the two caliper arms are linearly positionally fixed, but are rotatably arranged relative to one another.

Finally, suitably, the caliper arm is made by a forging technique. In this way, high strength performance is obtained while having a reduced weight potential. Preferably, the caliper arm is made of steel that guarantees the long life of the tongs.

1‧‧‧ clamp

2‧‧‧First clamp arm

3‧‧‧ second clamp arm

4‧‧‧live festival

5‧‧‧Handle section

5a‧‧‧Handle section

6‧‧‧Transition

6a‧‧‧Transition

7‧‧‧ head section

7a‧‧‧ head section

8‧‧‧First clamping jaw

8a‧‧‧Second clamping jaw

9‧‧‧ longitudinal gap

10‧‧‧Locking mechanism

11‧‧‧Long hole

12‧‧‧ card lock outline

13‧‧‧Operator

14‧‧‧Locking parts

15‧‧‧ tip

16‧‧‧ tip

17‧‧‧ jaw

18‧‧‧Long sawtooth profile

19‧‧‧Long sawtooth profile

20‧‧‧Short zigzag outline

21‧‧‧Short zigzag outline

22‧‧‧Sawtooth profile

23‧‧‧ teeth

24‧‧‧ teeth

25‧‧‧ long side

26‧‧‧ Short side

27‧‧‧ side

28‧‧‧Sawtooth profile

29‧‧‧Sawtooth profile

30‧‧‧ teeth

31‧‧‧ recess

A‧‧‧ distance

H‧‧‧ Height

H ₁ ‧‧‧ Height

H ₂ ‧‧‧ Height

L‧‧‧ length

MLE‧‧‧ center longitudinal plane

R‧‧‧ Radius

R ₁ ‧‧‧ Radius

‧‧‧‧ angle

‧‧‧‧角角

Γ‧‧‧张角

Δ‧‧‧张角

Ε‧‧‧ angle

Ζ‧‧‧张角

Η‧‧‧ angle

Θ‧‧‧张角

The invention is further illustrated below with reference to the embodiments shown in the drawings. In the figure: Figure 1 shows a side view of the clamp; Figure 2 shows a view of the clamp viewed in the direction of arrow II of Figure 1; Figure 3 shows a side view of the clamped region of the clamp; Figure 4 also shows Figure 3 in a side view An enlarged partial view of the clamping region; and Figure 5 again shows an enlarged partial view of the clamping region.

Figure 1 and Figure 2 show the clamp of the water pump pliers in the form of a 1 mark. The clamp 1 has a first caliper arm 2 and a second caliper arm 3, which are coupled to each other by an adjustable joint 4.

Each of the caliper arms 2, 3 is divided into a handle section 5, 5a, a transition section 6, 6a and a head section 7, 7a having clamping jaws 8, 8a.

Furthermore, it can be seen from FIG. 2 that the first caliper arm 2 has a longitudinal slot 9 in its transition section 6 and the other caliper arm 3 passes through the longitudinal slot 9 with its transition section 6a.

In addition, the clamp 1 has a latching mechanism 10 which allows the second caliper arm 3 to perform an adjustment movement of the translation relative to the first caliper arm 2, by means of which the clamp 1 can be adjusted stepwise in the head section 7 The width of the opening between 7a.

In the transition section 6a of the second caliper arm 3, an elongate hole 11 is provided, which has a serrated latching contour 12 on its inner longitudinal edge. In addition, an actuating lever 13 is provided on the first caliper arm 2, which actuates the locking member 14 in the axial direction during operation, so that the locking member is transferred from the locking position into the released position and thus An adjustment movement of the translation of the first caliper arm 2 relative to the second caliper arm 3 can be achieved. If the locking member 14 is then in the new locking position, the two jaw arms 2, 3 can pivot about the joint 4.

As can be clearly seen in Figures 1 and 3, the second clamping jaw 8a of the second caliper arm 3 is laterally projecting relative to the adjacent transition section 6a at an angle α of 90°, while the first caliper arm 2 is The first clamping jaw 8 is arranged at an angle β of 45° with respect to the adjacent transition section 6.

In addition, as can be seen in particular with reference to Figures 4 and 5, the S-shaped faces of the clamping jaws 8, 8a facing each other The inner contour, in the case of the jaws 17 , has serrated profiles 18 to 22 with teeth 23 , 24 which are triangular in longitudinal section, the jaws being in contact with the tips 15 , 16 of the clamping jaws 8 , 8 a . It is a parallelogram.

In this aspect, Figures 4 and 5 additionally show that the inner contour of the long parallel jaw jaws 17 consists of serrated profiles 18, 19 with teeth 23 having unequal length sides 25, 26 in longitudinal section. The short inner contour of the jaws 17 and the inner contours of the tips 15, 16 of the clamping jaws 8, 8a are formed by serrated profiles 20, 21, 22 with teeth 24 having equal length sides 27 in the longitudinal section. . In addition, it can be seen that the long second sawtooth profile 19 disposed in the second clamping jaw 8a of the jaw 17 extends linearly, and the long first sawtooth profile 18 located in the first clamping jaw 8 faces the second sawtooth. The contour 19 extends convexly. The convex sawtooth profile 18 has a radius R of 45 mm.

When the teeth 24 of the serrations 22 on the inside of the tips 15, 16 engage in a form-fitting manner with each other (Fig. 5), the long sides 25 of the teeth 23 of the long serrations 18, 19 in the jaws 17 are almost parallel to one another and relative to A central longitudinal plane (MLE) intersecting the teeth 24 of the serrations 22 on the inside of the tips 15, 16 is arranged in parallel. In this case, the average distance A of the long second sawtooth profile 19 in the jaws 17 from the long first sawtooth profile 18 is 4.5 mm. The height H of the teeth 23 of the second second sawtooth profile 19 in the jaws 17 is 0.52 mm, while the height H ₁ of the teeth 23 of the long first sawtooth profile 18 is 0.58 mm.

As shown in Figure 3, the opening angle γ between the short side 26 of the teeth 23 of the long serrations 18, 19 of the jaws 17 and the long side 25 of the respective adjacent teeth 23 is 105°. The angle δ between the short side 26 of the teeth 23 of the long serrations 18, 19 of the jaws 17 and the central longitudinal plane (MLE) intersecting the teeth 24 of the serrations 22 on the inside of the tips 15, 16 is 70°. .

The height H2 of the teeth 24 of the sawtooth profiles 20, 21 of the short inner contour of the jaws 17 is 0.36 mm (Fig. 5).

When the teeth 24 of the serrations 22 of the tips 15, 16 are positively engaged with each other, the long serrations 18, 19 in the jaws 17 are opposite the serrations of the inside of the tips 15, 16 The center longitudinal plane (MLE) at which the teeth 24 of the 22 intersect is set at an angle ε of 15°. The opening angle ζ between the long sawtooth profiles 18, 19 located in the jaws 17 and the adjacent short sawtooth profiles 20, 21 is 135° (Fig. 3).

The length L of the jaw 17 is 21.4 mm (Fig. 5).

When the teeth 24 of the serrations 22 on the inside of the tips 15, 16 engage in a form-locking manner, the internal serrations 28, 29 (Fig. 4) facing the tips 15, 16 and beside the jaws 17 extend linearly. They are disposed at a distance from each other and are provided with teeth 30 having equal length sides 27 in the longitudinal section (Figs. 4 and 5). It can also be seen that the internal serrations 28, 29 are arranged to extend an angle η of 2.4° from the tips 15, 16 (Fig. 3).

A semicircular recess 31 is formed in the inner serration profile 28 of the second clamping jaw 8a next to the jaws 17. This recess has a radius R _{1 of} 2 mm (Figs. 4 and 5).

The inner contour of the tips 15, 16 and the short inner contour of the jaws 17 and the two adjacent teeth 24 of the serrations 20, 21, 22, 28 and 29 of the jaws 17 facing away from the tips 15, 16 The opening angle θ between the side faces 27 is 90°.

8‧‧‧First clamping jaw

8a‧‧‧Second clamping jaw

15‧‧‧ tip

16‧‧‧ tip

17‧‧‧ jaw

18‧‧‧Long sawtooth profile

19‧‧‧Long sawtooth profile

20‧‧‧Short zigzag outline

21‧‧‧Short zigzag outline

22‧‧‧Sawtooth profile

27‧‧‧ side

28‧‧‧Sawtooth profile

29‧‧‧Sawtooth profile

31‧‧‧ recess

MLE‧‧‧ center longitudinal plane

Claims (17)

A clamp (1) having an adjustable joint (4) having two tong arms (2, 3) coupled to each other by the joint (4), the caliper arms being respectively divided into handle segments (5, 5a), a transition section (6, 6a) and a head section (7, 7a) having a clamping jaw (8, 8a), wherein the second clamping jaw (8a) is adjacent to the transition The segment (6a) is laterally convexly disposed, and the other first clamping jaw (8) is disposed at an angle (β) between about 35° and 55° with respect to the adjacent transition section (6), and the clip The S-shaped inner contours of the jaws (8, 8a) facing each other, in the case of the jaws (17), have a sawtooth profile with teeth (23, 24) which are triangular in the longitudinal section (18, 19). , 20, 21), the jaws (17) are parallelograms when the tips (15, 16) of the clamping jaws (8, 8a) are in contact with each other, characterized in that the parallelogram jaws ( 17) The inner contour of the length consists of the serrations (18, 19) with the teeth (23) having unequal length sides (25, 26) in the longitudinal section, and the jaws (17) The short inner contour and the inner contour of the tips (15, 16) of the clamping jaws (8, 8a) are provided with The sawtooth profiles (20, 21, 22) of the teeth (24) having equal length sides (27) in the cross section, wherein the jaws (17) are disposed on the second clamping jaw (8a) The long second sawtooth profile (19) extends linearly, and the long first sawtooth profile (18) located in the first clamping jaw (8) is convex toward the second sawtooth profile (19) The ground extends. The clamp of claim 1, wherein: the teeth (24) of the serrations (22) inside the tips (15, 16) are in a form-fitting engagement with each other, the jaws (17) The long sides (25) of the teeth (23) of the equal length serrations (18, 19) are nearly parallel to each other and to the serration contour (22) inside the tips (15, 16) The central longitudinal planes (MLE) where the equal teeth (24) intersect are arranged in parallel. The clamp of claim 1 or 2, wherein the jaws (17) of the serrations (22) on the inside of the tips (15, 16) are in positive-locking engagement with each other In the middle The average distance (A) of the long second sawtooth profile (19) relative to the long first sawtooth profile (18) is 4.5 mm. The clamp of claim 1 or 2, wherein: the height H of the teeth (23) of the long second sawtooth profile (19) in the jaw (17) is 0.52 mm, and the long first The height H ₁ of the teeth (23) of the sawtooth profile (18) is 0.58 mm. The clamp of claim 1 or 2, wherein: the short side (26) of the teeth (23) of the equal length serrations (18, 19) in the jaw (17) is correspondingly adjacent to the The opening angle γ between the long sides (25) of the equal teeth (23) is 105°. The clamp of claim 1 or 2, wherein the jaws (17) of the serrations (22) on the inside of the tips (15, 16) are in positive-locking engagement with each other The short sides (26) of the teeth (23) of the equal length serrations (18, 19) and the teeth of the sawtooth profile (22) inside the tips (15, 16) 24) The angle δ between the intersecting central longitudinal planes (MLE) is 70°. The clamp of claim 1 or 2, wherein: the height H ₂ of the teeth (24) of the serrated contours (20, 21) of the short inner contour of the jaws (17) is 0.36 mm. The clamp of claim 1 or 2, wherein the jaws (17) are in a form-fitting engagement with the teeth (24) of the serrations (22) of the tips (15, 16) The lengthwise sawtooth profile (18, 19) is 15° with respect to a central longitudinal plane (MLE) that intersects the teeth (24) of the serration profile (22) inside the tips (15, 16). Angle ε setting. A clamp according to claim 1 or 2, wherein: an angle between the equal length of the sawtooth profile (18, 19) in the jaw (17) and the adjacent short sawtooth profile (20, 21) ζ is 135°. The clamp of claim 1 or 2, wherein: the short serrations (20, 21) of the serrations (22) inside the tips (15, 16) in the jaws (17) And the zigzag profiles of the jaws (17) on the sides facing away from the tips (15, 16) (28, The opening angle θ between the two teeth (24) having the equal-length side faces (27) of 29) is 90°. The clamp of claim 1 or 2, wherein: the length L of the jaw (17) is 21.4 mm. The clamp of claim 1 or 2, wherein the teeth (24) of the serrations (22) on the inside of the tips (15, 16) are facing away from each other in a form-fitting engagement with each other ( The internal sawtooth profiles (28, 29) of 15, 15) and adjacent to the jaws (17) extend linearly, are spaced apart from one another, and are provided with equal length sides in the longitudinal section (27). ) teeth (30). The clamp of claim 12, wherein: said internal serrated profiles (28, 29) facing away from the tip (15, 16) and located beside the jaws (17) to exit the tips (15, 16) ) Open at an angle η of 2.4°. The clamp of claim 12, wherein a semi-circular recess (31) is formed in the internal serration profile (28) of the second clamping jaw (8a) beside the jaw (17). The clamp of claim 14, wherein: the recess (31) has a radius R _{1 of} 2 mm. A clamp according to claim 1 or 2, wherein: the caliper arm (2) has a longitudinal slit (9) in its transition section (6) and the other caliper arm (3) passes through its transition section (6a) The longitudinal slot (9) has an elongated hole (11) with two latching contours (12) which are opposite one another, wherein a locking can be supported in a linear manner in the second caliper arm (3). Piece (14), the first caliper arm (2) is rotatable about the locking member. The clamp of claim 1 or 2, wherein: the caliper arms (2, 3) are made by forging techniques.