KR0178963B1 - Pipe wrench - Google Patents

Abstract

The present invention relates to a pipe wrench, and more particularly, to a pipe wrench capable of performing a role of a pipe wrench as a single pipe wrench, as well as a role of a puller and a plier, a wire cutter, and a driver.

Pipe wrench according to the present invention, the fixing jaw 11 is formed in the front and the handle portion 12 is formed in the rear and the fixing jaw 11 is provided with at least one locking jaw 14 on the inner wall at the rear end. A wrench body 1 having a through hole 13 formed therein is formed, and the through hole 13 of the wrench body 1 includes a vertical portion 22 having a catching hole 21 caught by the catching jaw 14. Pie installed with a movable jaw (2) consisting of a clamping portion 23 for asking an object is roaming, the spring means (3) is installed to elastically press the movable jaw (2) toward the fixed jaw (11) side In the French 10, at the lower predetermined position of the wrench body 1, the clamping release mechanism 4 composed of the handle portion 41 and the pressing portion 42 is hinged in the form of a lever, the handle portion 41 The pressing portion 42 pushes the rear portion of the vertical portion 21 of the movable jaw 2 as the clamping portion 23 of the movable jaw 2 moves forward. The moving jaw (2) and the fixed jaw (11) is opened while rotating to the room to release the clamping state, the pressing portion (5) is installed on the end of the vertical portion 21 of the movable jaw (2) wrench As the grip portion 12 and the pressing knob 5 of the body 1 are gripped together, the clamping portions of the movable jaw 2 and the fixed jaw 11 are retracted to clamp the object.

In addition, the pressing knob 5 is detachably installed at the distal end of the vertical section 22 of the movable jaw 2 by the pressing knob detaching means, and the pressing knob 5 is attached to the handle part of the wrench body 1. 12) It is housed freely in the inside, characterized in that the wire cutting means is provided between each of the clamping portion or the wrench body (1) of the moving jaw (2) and the fixed jaw (11) and the clamping release mechanism (4). do.

Description

Pipe wrench

The present invention relates to a pipe wrench, and more particularly, to a pipe wrench capable of performing a role of a pipe wrench as a single pipe wrench, as well as a role of a puller and a plier, a wire cutter, and a driver.

Conventional pipe wrenches are used to loosen and tighten pipes, bolts and nuts. Such conventional pipe wrenches perform the original functions of pipe wrenches sufficiently, but other functions other than the functions of pipe wrenches, for example, For example, there is a pity that the functions such as the plucker, the pliers, the screwdriver and the wire cutter can not be performed.

The present invention has been devised in view of the above problems, and the present invention can sufficiently perform the functions of a hand tool such as a plier and a pliers, a driver, a wire cutter, and the like while fully performing the original function of the pipe wrench as a single pipe wrench. The purpose is to provide a pipe wrench.

Pipe wrench of the present invention for achieving the above object, a fixed jaw is formed in the front and the handle portion is formed in the rear, the wrench body is formed through the through-hole formed with at least one locking jaw on the inner wall at the rear end of the fixed jaw is formed; In the through-hole of the wrench body, a moving jaw composed of a vertical part having a locking part to be caught on the locking jaw and a clamping part to bite an object is inserted and installed to retract, and a spring that elastically presses the moving jaw toward the fixed jaw side. In the pipe wrench provided with means, a clamping release mechanism consisting of a handle portion and a pressing portion is hinged in the form of a lever at a predetermined position on the lower side of the wrench body, and the pressing portion pushes the rear of the vertical part of the moving jaw as the handle portion is grabbed. As the clamping part of the moving jaws rotates backwards, the gap between the moving jaws and the fixed jaws opens. It is designed to release the ramping state, and the pressing handle is installed at the distal end of the movable jaw, and the clamping portion of the movable jaw and the fixed jaw are retracted as the handle and the pressing knob of the wrench body are gripped together. It is possible to clamp.

In addition, the pressing handle is freely installed at the vertical end of the movable jaw by the pressing handle detaching means, and the pressing handle is freely received inside the handle of the wrench body, and each clamping of the movable jaw and the fixed jaw is clamped. Between the lower part or the wrench body and the clamping release mechanism is characterized in that it is provided with a wire cutting means.

1 is a cross-sectional view showing an embodiment of a pipe wrench according to the present invention.

2 is a plan view of the present invention shown in FIG. 1, showing a state in which the spring is rotated.

3 is a cross-sectional structural view showing a push knob detachment means which is a main part of the present invention shown in FIG.

Figure 4 is a cross-sectional view showing that the pressing knob is stored inside the handle portion of the wrench body.

Figure 5 (a), (b) is a view of another embodiment showing that the clamping portion of the pipe wrench according to the present invention is formed in a right angle and inclined form.

6 is a cross-sectional view showing yet another embodiment of a pipe wrench according to the present invention.

(A) and (b) of FIG. 7 show that a-type driver and a + type driver are formed at the front end of the push knob.

(A)-(d) of FIG. 8 are excerpts showing various embodiments of the spring means for pressing the moving jaw of the pipe wrench of the present invention.

9 is a cross-sectional view showing another embodiment of the pipe wrench according to the present invention, wherein a locking mechanism is formed at the rear of the moving jaw.

(A) and (b) of FIG. 10 are structural diagrams showing that the wire cutting means is formed in the pipe wrench of the present invention, and (a) shows that one cutting edge is inserted between two cutting portions, and (b) Is a diagram showing that the cutting edges of one each of the upper and lower sides are provided in contact with each other.

* Explanation of symbols for main parts of the drawings

1: Wrench body 11: Fixed jaw

12: handle portion 13: through hole

14: locking step 15: storage space

16: rock ball 17, 26: spring

18: cutting part 2: moving jaw

21: latch 22: vertical portion

23: clamping portion 24: protrusion

25: rock ball 3: spring means

31: push rod 32: compression coil spring

33: grip handle 34: housing portion

35: locking groove 4: clamping release

41: handle portion 42: pressing portion

5: Pressing Handle 51: Insertion Groove

52: set groove 53: cutting edge

101:-type driver 102: + type driver

c: cutting edge w: wire

10: pipe wrench

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the pipe wrench 10 of the present invention includes a fixed jaw 11 formed at the front and a handle portion 12 formed at the rear thereof, and at least one inner wall at the rear end of the fixed jaw 11. The wrench body 1 through which the through hole 13 having the above-described locking jaw 14 is formed is formed, and the locking hole 21 caught by the locking jaw 14 is formed in the through hole 13 of the wrench body 1. The moving jaw (2) consisting of a vertical portion 22 having a clamping portion (23) to bite the object is inserted and installed so as to be retracted, and press the moving jaw (2) elastically to the fixed jaw (11) side In the pipe wrench provided with the spring means (3), the clamping release mechanism (4) consisting of a handle portion (41) and a pressing portion (42) is hinged in the form of a lever at a predetermined position on the lower side of the wrench body (1). The pressing knob 5 is freely detachable by the pressing knob detaching means at the distal end of the vertical section 22 of the movable jaw 2. There is installed.

As shown in FIG. 3, the push knob detachable means includes a protrusion 24 protruding from the distal end of the vertical portion 22 of the movable jaw 2 and a spring 26 on one side of the protrusion 24. The lock ball 25 is elastically installed in the interposed state, and an insertion groove 51 into which the protrusion 24 is inserted is formed at the front end of the push knob 5, and on one inner surface of the insertion groove 51. The seating groove 52 to which the lock ball 25 is elastically seated is formed.

Then, the pressing knob (5) is configured to be stored inside the wrench body (1) after being separated from the distal end of the vertical portion 22 of the moving jaw (2), the receiving means is shown in FIG. In the same manner, an accommodating space 15 into which the push knob 5 is inserted is formed inside the handle 12 of the wrench body 1, and a spring 17 is interposed between the accommodating space 15 and the insertion start portion of the accommodating space 15. The lock ball 16 is elastically installed in a state in which the lock ball 16 is installed, and a seating groove 52 in which the lock ball 16 is elastically inserted and positioned at a predetermined position of the push knob 5 inserted into the storage space 15 is installed. ) Is formed.

(A) and (b) of FIG. 5 shows that the clamping portion of the pipe wrench according to the present invention is formed in a right angle shape and an inclined shape.

In addition, the spring means 3 shown in FIGS. 1 and 2 have one side fixed end of the torsion spring installed at a predetermined position on the front upper portion of the wrench body 1, and the other side free end is the upper side of the moving jaw 2. Spring means (3) is installed to elastically press the spring means (3) adopts a torsion spring and one end is fixed to a predetermined position in the front upper part of the wrench body (1) by a screw to see in FIG. As the spring means 3 can be rotated as described above, the movable jaw 2 can be easily inserted into the through hole 13.

6 shows a pipe wrench 10 according to another embodiment of the present invention, the pipe wrench 10 according to another embodiment of the present invention includes a pipe wrench 10 according to the embodiment shown in FIG. Similar but different is that the spring means for pressing the moving jaw (2), the clamping release mechanism (4), the shape of the pressing knob (5), and the spring means are formed at the tip of the spring means.

That is, the spring means has a housing portion 34 is formed on the upper end of the wrench body 1 as shown in Figure 6 and the housing portion 34 is formed with a locking groove 35, the housing portion 34 The pressing rod 31 having the locking handle 33 which is caught by the locking groove 35 on the upper side is horizontally inserted into the compression coil spring 32 so that the pressing rod 31 is compressed in the compression coil spring 32. By pressing elastically the upper part of the movable jaw (2) by the elasticity of, and when releasing the pressing state by lifting the locking handle 33 to the upper portion of the housing 34, the locking handle 33 is the housing portion 34 Escape from the locking groove 35 formed on the upper side and caught on the upper side of the housing 34, the height of the pressing rod 31 is increased to release the pressed state of the movable jaw 2.

When the pressing state of the moving jaw 2 is released as described above, the moving jaw 2 can be easily moved in and out of the through hole 13 of the wrench body 1.

The subtraction means protrudes so that the auxiliary jaw 34a extends at the tip of the housing 34 of the spring means, and slides at the tip of the vertical portion 22 of the movable jaw 2 corresponding to the auxiliary jaw 34a. Preventive concave and convex portion (34b) is formed to grab the clamping release mechanism (4) and the handle portion 12 can be used as a means of pulling out the gap between the auxiliary jaw (34a) and the concave-convex portion (34b), The cutting edges 34a 'and 34b' for cutting wires and the like are formed at the rear end of the auxiliary jaw 34a and the rear end of the uneven portion 34b.

In addition, the clamping release mechanism (4) and the pressing knob (5) is formed in a thin plate shape while the storage space portion 15 formed in the wrench body (1) is the clamping release mechanism (4) and the push handle of the plate shape (5) is formed to form a thin rectangular gap in the form of the rear and the lower part opening so that the insertion, the lower side of the handle portion 12 of the wrench body 1 as shown in (a) of FIG. Two cutting portions 18 are formed in a semicircular shape by a thin gap, and one cutting edge 53 formed in the clamping release tool 4 is inserted between the two cutting portions 18 to cut the wire w. A wire cutting means is provided to make it possible.

In addition, the pipe wrench of the present invention has a wire cutting means for use as a wire cutter as shown in FIGS. 1 and 10 (a) and (b). The wire cutting means of FIG. Cutting edges (c) were formed on the clamping portions of the fixing jaws (11), and the wire cutting means of (a) and (b) of FIG. 10 is the lower portion of the handle portion 12 of the wrench body 1 and the clamping release tool ( The cutting portion 18 and the cutting edge 53 are formed on the upper side of the handle portion 41 of 4), and the wire cutting means of FIG. 10 (a) is the handle portion of the wrench body 1 formed in the rectangular gap shape. (12) A semicircular groove-shaped cutout portion 18 is formed on both lower sides, and a cutting edge 53 formed at one side of the clamping release tool 4 is inserted between the two cutout portions 18 to insert the wire w. Being able to cut, the wire cutting means shown in Figure 10 (b) is the handle of the wrench body (1) formed in the rectangular gap shape The upper cutting edge 53 is provided in the gap between the lower portion 12, and the cutting edge is in contact with the upper cutting edge 53 at a corresponding position of the clamping release tool 4 corresponding to the upper cutting edge 53. 53 is formed and the wire w can be cut | disconnected with the up-and-down cutting edge 53. As shown in FIG. 7 (a) and 7 (b) show that the negative driver 101 and the positive driver 102 are formed at the distal end of the push knob 5.

8 (a) to 8 (d) show various embodiments of the spring means 3 for pushing the moving jaw 2, and (a) shows the inside of the through hole 13 of the wrench body 1. The leaf spring 3a is installed to press the rear of the vertical part 22 of the movable jaw 2 toward the fixed jaw 11 side, and (b) moves below the fixed jaw 11 of the wrench body 1. A leaf spring 3b for pushing the lower end of the vertical part 22 of the jaws 2 is installed, indicating that the clamping portion of the jaws 2 is pushed toward the fixed jaw 11 side, and (c) indicates the movement. A tension coil spring 3c is provided between the rear of the vertical portion 22 of the jaw 2 and the tip load side of the handle 12 of the wrench body 1, and the tension coil spring 3c is moved by a tension force of the tension coil spring 3c. The clamping part of 2) is installed so as to be pushed toward the fixing jaw 11 side, and (d) shows that one end of the torsion spring 3d is fixed to the outside of the through hole 13 of the wrench body 1. And the other free end of the torsion spring 3d is elastically engaged to the outside of the clamping part of the moving jaw 2, indicating that the clamping part of the moving jaw 2 is pushed toward the fixed jaw 11 side.

9 is a still another embodiment of the present invention, the locking jaw 14 is formed on the inner wall of the rear side of the through hole 13 of the wrench body 1, and the locking behind the vertical portion 22 of the moving jaw 2. A plurality of catching holes 21 caught in the jaw 14 are formed.

Looking at the effects of the present invention configured as described above are as follows.

When unwinding or tightening the pipe using the pipe wrench 10 of the present invention, when the pipe is inserted between the moving jaw 2 and the fixed jaw 11, the moving jaw 2 moves backward by a predetermined angle. The jaws 2 and the fixed jaws 11 are opened so that the pipes are bitten. At this time, the movable jaws 2 are moved by spring means 3, 3a, 3b, 3c and 3d. The jaws (2) are elastically clamped to the pipes, bolts and nuts without turning back.

In this way, when the pipe or bolt, nut is pinched between the moving jaw (2) and the fixed jaw (11), the user can loosen or tighten the pipe, bolt, nut, etc. as desired by the user, the pipe wrench 10 of the present invention Since the locking jaw 14 formed in the through hole 13 and the locking jaw 14 formed in the vertical part 22 of the moving jaw 2 is in a locked state, the moving jaw 2 when loosening or tightening a pipe or bolt, etc. The phenomenon of pushing out does not occur.

In addition, the pipe wrench 10 of the present invention is such that the movable jaw 2 can be protruded from the through hole 13 of the fixed jaw 11 so that the opening width between the movable jaw 2 and the fixed jaw 11 is greatly widened. There is an increasing advantage. When the movable jaw 2 is moved up and down, the catch 21 formed in the vertical portion 22 of the movable jaw 2 releases the jam state from the catching jaw 14 inside the through hole 13. Thereafter, the moving jaw 2 may be moved up and down as desired by the user.

When the moving jaw 2 is greatly raised, when the spring means 3 of various embodiments is released, the pressing force of the various spring means 3 is released to facilitate the moving jaw 2 to the upper side of the through hole 13. Raise the moving jaw (2) can be raised significantly.

When releasing the spring means 3 of the various embodiments, first, when the spring means 3 is rotated sideways while lifting the spring means 3 in FIG. 2, the pressing force of the spring means 3 is released, In the case of FIG. 6, the height of the push rod 31 is raised by lifting the locking handle 33 caught in the locking groove 35 from the locking groove 35 so that the locking handle 33 is caught on the upper side of the housing 34. Can be released to release the pressing force of the spring means (3), in the case of (a) to (d) of Fig. 8 in the opposite direction in which the elasticity of the spring (3a) (3b) (3c) (3d) While pushing the moving jaw (2) can be pulled upwards through the through hole (13). If the moving jaw (2) is greatly increased, it can be used very conveniently when loosening and tightening a large pipe or bolt.

In addition, in the case of releasing or tightening the pipe as the pipe wrench 10, when the pipe wrench 10 is turned, the pipe wrench 10 is loosened or tightened as much as the pipe wrench 10 is rotated. 10) must be turned in the opposite direction, the moving jaw 2 being held by the spring means (3) (3a) (3b) (3c) (3d) to turn the pipe wrench (10) in the opposite direction. The pipes often run along.

Therefore, in this case, if the grip 12 and the clamping release tool 4 shown in FIGS. 1 and 6 are gripped, the pressing portion 42 of the clamping release tool 4 rotates about the hinge portion, and the moving jaw 2 If you open the moving jaw (2) by pushing the lower end of the vertical portion 22 of the) can prevent the phenomenon that the pipe is running along.

On the other hand, the pipe wrench of the present invention can be used to remove the pipe wrench of the present invention as a push knob 5 is detachably installed in the end of the vertical part 22 of the movable jaw (2). When the pipe wrench of the present invention is used as a bobbin or pliers, the moving jaw (2) is lowered from the through hole (13), and then the grip (12) and the pressing knob (5) of the wrench body (1) are moved. Each clamping part of (2) and the fixing jaw (11) is tightened while being able to use as a pliers or pliers without the pipe wrench of the present invention.

In addition, as shown in FIG. 6, the other removing means of the present invention has the auxiliary jaw 34a protruding to the front at the tip of the housing 34, and the moving jaw 2 corresponding to the auxiliary jaw 34a. As the uneven portion 34b is formed at the tip of the vertical portion 22 of the vertical portion 22, cutting edges 34a 'and 34b' are formed at the rear ends of the auxiliary jaw 34a and the uneven portion 34b '. Grabbing the handle portion 12 and the clamping release tool (1) (1) is the space between the auxiliary jaw (34a) and the concave-convex portion (34b) can be clamped or cut various wires or the like.

Thus, when using the pipe wrench of the present invention after removing the pipe wrench of the present invention and then using the pipe wrench of the present invention as the original function of the pipe wrench, the wrench body is removed after removing the pressing knob 5 from the vertical part 22 of the movable jaw 2. When the pressing handle 5 is accommodated in the storage space 15 formed inside the handle part 12 of (1), the pressing handle 5 is not distanced from the pipe wrench.

The push knob 5 has a -type driver 101 or a + type driver 102 formed at the distal end, so that the driver can be used after removing the push knob 5 when the driver is to be used.

As described above, the pipe wrench according to the present invention has a large opening width between the movable jaw and the fixed jaw, and is a single pipe wrench, and pipes from small diameter pipes, bolts and nuts to large diameter pipes and bolts and nuts In addition to the advantages of being able to easily loosen or tighten, as a pipe wrench, as well as the role of the pipe wrench, but also the role of the pull out and pliers, wire cutters, drivers can have a very useful effect.

Claims (20)

A fixed jaw 11 is formed at the front, and a handle 12 is formed at the rear, and a wrench body having a through hole 13 provided with at least one locking jaw 14 at an inner wall at a rear end of the fixed jaw 11. (1) is formed, the through hole 13 of the wrench body (1) is a vertical portion 22 having a locking hole 21 to be caught on the locking jaw (14) and the clamping portion (23) to bite the object In the pipe wrench (10) is provided with a moving jaw (2) consisting of a spring means (3) for elastically pressing the moving jaw (2) to the fixed jaw (11) side, the wrench In the lower predetermined position of the body (1), the clamping release mechanism (4) consisting of the handle portion 41 and the pressing portion 42 is hinged in the form of a lever, and the pressing portion 42 as the handle portion 41 is grasped ) Pushes the rear of the vertical part 21 of the moving jaw 2 so that the clamping part 23 of the moving jaw 2 rotates backwards, The jaws 11 are separated from each other to release the clamping state, and the pressing knob 5 is installed at the distal end of the vertical portion 21 of the movable jaw 2 so that the handle 12 of the wrench body 1 and Pipe wrench characterized in that the clamping portion of each of the moving jaw (2) and the fixed jaw (11) can be clamped while holding the pressing knob (5) together. The pipe wrench according to claim 1, wherein the pressing handle (5) is detachably attached to the vertical end (22) of the moving jaw (2) by the pressing handle detaching means. The method of claim 2, wherein the pressing handle detachable means, the projection 24 is formed at the distal end of the vertical portion 22 of the moving jaw (2), and one side of the projection (24) via a spring 26 through The lock ball 25 is elastically installed in a state in which the locking ball 25 is inserted, and an insertion groove 51 into which the protrusion 24 is inserted is formed at the front end of the pressing knob 5, and the lock is formed on one inner surface of the insertion groove 51. Pipe wrench, characterized in that the seating groove 52 is formed to be inserted into the ball 25 elastically seated. The pipe wrench according to claim 1, wherein an inner space of the wrench body (1) is provided with a storage space (15) into which the pressing handle (5) is inserted. The lock ball 16 is elastically installed in the insertion start part of the said storage space part 15 with the spring 17 interposed, The predetermined | prescribed of the said push knob 5 Pipe wrench, characterized in that the locking ball 16 is formed in the seating groove 52 is elastically inserted and seated to accommodate the pressing knob (5) without flow in the storage space (15). The pipe wrench according to claim 1, wherein a cutting edge (c) for wire cutting is formed in the clamping portion of the movable jaw (2) and the fixed jaw (11). The pipe wrench according to claim 1, wherein the clamping portion of the movable jaw (2) and the fixed jaw (11) is formed at right angles. The pipe wrench according to claim 1, wherein the clamping portion of the movable jaw (2) and the fixed jaw (11) is formed in an inclined shape. According to claim 1 or 4, wherein the clamping release mechanism 4 and the pressing knob (5) is formed in a thin plate shape, the storage space 15 formed in the wrench body (1) is of the plate shape Pipe clamp characterized in that the clamping release mechanism (4) and the pressing knob (5) formed in a thin rectangular gap shape in the form of the rear and the lower portion is opened so that the insertion. The method of claim 1, wherein the locking jaw 14 is formed on the inner wall of the rear side of the through hole 13 of the wrench body 1, the locking jaw 14 behind the vertical portion 22 of the movable jaw (2). Pipe wrench, characterized in that a plurality of engaging holes (21) is caught. According to claim 1, wherein the spring means 3 has a housing portion 34 is formed on the upper end of the wrench body 1, the housing portion 34 is formed with a locking groove 35, the housing portion ( 34, the pressing rod 31 having the locking handle 33 which is caught by the locking groove 35 on the upper side is elastically inserted with the compression coil spring 32 interposed therebetween so that the pressing rod 31 is compressed coil. The elasticity of the spring 32 elastically presses the upper part of the movable jaw 2, and when releasing the pressed state, lifts the locking handle 33 to the upper side of the housing part 34 so that the locking handle 33 is the housing part. (34) The pipe wrench, characterized in that the height of the push bar 31 is increased to release from the locking groove 35 formed on the upper side and caught on the upper side of the housing part 34 to release the pressed state of the moving jaw (2). . According to claim 1, wherein the spring means (3) is provided with a leaf spring (3a) inside the through hole 13 of the wrench body 1 is fixed to the rear of the vertical portion 22 of the moving jaw (2) ( 11) Pipe wrench characterized in that installed to press to the side. According to claim 1, The spring means 3 is a leaf spring (3b) for pushing the lower end of the vertical portion 22 of the movable jaw 2 to the lower end of the fixing jaw (11) of the wrench body (1) Pipe wrench, characterized in that the clamping portion of the moving jaw (2) is installed to be pushed toward the fixed jaw (11) side. The tension coil spring (3c) according to claim 1, wherein the spring means (3) is provided between the rear of the vertical portion (22) of the movable jaw (2) and the tip portion of the handle portion (12) of the wrench body (1). And a clamping portion of the movable jaw (2) is pushed toward the fixed jaw (11) side by the tension of the tension coil spring (3c). According to claim 1, wherein the spring means (3) is fixed to one end of the torsion spring (3d) outside the through hole 13 of the wrench body (1) and the other free end of the torsion spring (3d) is moved. Pipe wrench characterized in that it is installed to be elastically caught outside the clamping portion of (2) so that the clamping portion of the moving jaw (2) is pushed toward the fixed jaw (11) side. 3. The pipe wrench according to claim 2, wherein a negative driver (101) is formed at the tip of the push knob (5). 3. The pipe wrench according to claim 2, wherein a + type driver (101) is formed at the tip of the push knob (5). 10. The method of claim 9, wherein the semi-circular groove-shaped cutting portion 18 is formed on both sides of the lower portion of the handle portion 12 of the wrench body 1 formed in the rectangular gap shape, and between the two cutting portions 18 Pipe wrench, characterized in that the cutting wire (53) formed on one side of the 4) is inserted to cut the wire (w). 10. The method of claim 9, wherein the upper cutting edge 53 is installed in the lower gap of the handle portion 12 of the wrench body (1) formed in the rectangular gap shape, the clamping release mechanism corresponding to the upper cutting edge (53) ( 4) A pipe wrench, characterized in that a cutting edge (53) is formed in contact with the upper cutting edge (53) to cut the wire (w) by the upper and lower cutting edges (53). 12. The tip of the vertical section 22 of the movable jaw 2 corresponding to the auxiliary jaw 34a, wherein the auxiliary jaw 34a extends so as to protrude from the tip of the housing 34. An anti-slip 34b is formed, and cutting edges 34a 'and 34b' are formed at the rear end of the auxiliary jaw 34a and the rear end of the recess 34b, respectively. Pipe wrench, characterized in that the clamping and cutting the wires and the like, as the grip portion (12) between the auxiliary jaw (34a) and the concave-convex portion (34b) is retracted.