EP3513909A1 - Pipe pliers - Google Patents
Pipe pliers Download PDFInfo
- Publication number
- EP3513909A1 EP3513909A1 EP18153080.9A EP18153080A EP3513909A1 EP 3513909 A1 EP3513909 A1 EP 3513909A1 EP 18153080 A EP18153080 A EP 18153080A EP 3513909 A1 EP3513909 A1 EP 3513909A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- toothed
- pivot
- grooves
- sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013459 approach Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/06—Joints
- B25B7/10—Joints with adjustable fulcrum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
Definitions
- the present invention relates to a hand tool, especially to a pipe pliers.
- a conventional pipe pliers includes a first clamping body and a second clamping body pivotally connected.
- the first clamping body has a sliding groove to allow the second clamping body to slide with respect to the first clamping body.
- a distance between a fixed clamping portion of the first clamping body and a movable clamping portion of the second clamping body is changeable by sliding the second clamping body.
- the movable clamping portion can be moved toward the fixed clamping portion by pivoting the second clamping body to clamp a pipe connector, as shown in patent TWM511931.
- the movable clamping portion approaches the fixed clamping portion by pivoting (in an arc path).
- the line defined by the force points of the fixed clamping portion and the movable clamping portion doesn't penetrate the center of the clamped object. That is, the two clamping portions are not parallel.
- the connector may slide between or separate from the fixed clamping portion and the movable clamping portions.
- the pipe pliers disclosed in the publication EP 0421107 includes a main body.
- the main body has a fixed jaw and a clamping element sldiably disposed on the main body.
- Each of two sides of the main body is formed with a sliding groove.
- the clamping element has two side plates. Each side plate has a protrusion on a face facing the other side plate.
- the two protrusions are slidably disposed in the two sliding grooves to make the clamping element slidably disposed on the main body.
- the two protrusions are difficult to be processed or shaped except precision casting.
- the clamping element manufactured by precision casting is not durable and costs too much.
- the pliers disclosed in publication CN204843895 has a main body having two side plates. Each side plate is formed with a receiving groove.
- the clamping element (or the second pliers opening) having a guiding protrusion.
- the guiding protrusion is slidably disposed in the receiving groove to make the clamping element slidable with respect to the main body.
- the thickness of the guiding protrusion has to be larger than the width of the receiving groove for sliding.
- the side plates are quite hard, so the operation has to be made by machines. However, the structure may be damaged to reduce the durability and accuracy.
- the length of the guiding protrusion along the sliding direction is short, so shaking is resulted between the clamping element and the main body.
- the guiding groove perpendicular to the receiving groove has plural teeth. During clamping, the guiding protrusion presses the teeth to damage the teeth.
- the main object of the present invention is to provide a pipe pliers having a first clamping portion and a second clamping portion sliding parallel to clamping the polygon pipe connector.
- the second clamping portion prevents from shaking so as to improve the accuracy.
- the pipe pliers of the present invention includes a first clamping body, a driving handle, and a clamping element.
- the first clamping body includes a first handle portion, a first clamping portion, and a body portiotn connected first handle portion and the first clamping portion therebetween.
- he body portion includes two side plates and is formed with two guiding toothed grooves.
- a receiving groove is defined between the two side plates.
- Each of the side plates is formed with a sliding groove on a face thereof facing the other side plate. The two sliding grooves are parallel to but not overlap the two guiding toothed grooves.
- the driving handle is restrictively and slidably arranged at the two guiding toothed grooves and pivotally connected to the first clamping body by a pivot portion.
- the driving handle has a second handle portion at an end and a protrusion at the other end.
- the clamping element includes a second clamping portion and a sliding piece connected to each other. The sliding piece is received in the receiving groove and slidably arranged in the two sliding grooves.
- the second clamping portion corresponds to the first clamping portion.
- the clamping element is formed with a recess.
- the protrusion is rotatably inserted in the recess. The protrusion is able to drive the clamping element to slide with respect to the first clamping body by the driving handle sliding or pivoting with respect to the first clamping body.
- the pipe pliers of the present invention includes a first clamping body 1, a driving handle 2, and a clamping element 3.
- the first clamping body 1 includes a first handle portion 11, a first clamping portion 12, and a body portion 13 connecting the first handle portion 11 and the first clamping portion 12 therebetween.
- the body portion 13 includes two side plates 131 and is formed with two guiding toothed grooves 14.
- a receiving groove 17 is defined between the two side plates 131.
- Each of the side plates 131 is formed with a sliding groove 15 on a face thereof facing the other side plate 131.
- the two sliding grooves 15 are parallel to but not overlap the two guiding toothed grooves 14.
- the driving handle 2 is restrictively and slidably arranged at the two guiding toothed grooves 14 and is pivotally connected to the first clamping body 1 by a pivot portion 4.
- the driving handle 2 has a second handle portion 21 at an end and a protrusion 22 at the other end.
- the clamping element 3 includes a second clamping portion 31 and a sliding piece 32.
- the sliding piece 32 is located in the receiving groove 17 and is slidably arranged in the two sliding grooves 15.
- the second clamping portion 31 corresponds to the first clamping portion 12.
- the clamping element 3 has a recess 34.
- the protrusion 22 is rotatably inserted into the recess 34.
- the protrusion 22 can drive the clamping element 3 to slide with respect to the first clamping body 1 due to the sliding or pivoting of the driving handle 2 with respect to the first clamping body 1. More specifically, when the driving handle 2 slides with respect to the first clamping body 1, as shown in Fig. 7 and Fig. 8 , the driving handle 2 is free so that the protrusion 22 drives the clamping element 3 to slightly slide along the two sliding grooves 15 with respect to the first clamping body 1. When the driving handle 2 pivots with respect to the first clamping body 1, as shown in Fig.
- the protrusion 22 is rotatable in the recess 34 so that the protrusion 22 can abut against the recess 34 to make it slightly slide along the two sliding grooves 15 with respect to the first clamping body 1.
- the second clamping portion 31 can approach or leave the first clamping portion 12 to clamp a polygonal pipe connector or other objects.
- the pivot portion 4 includes an elastic element 41 and a pivot button 42.
- the driving handle 2 has a pivot hole 23.
- the pivot button 42 is assembled by a first connecting element 421 and a second connecting element 422 and inserts into the pivot hole 23 and the guiding toothed groove 14.
- the pivot portion 4 further has at least one restriction toothed portion 43.
- the pivot button 42 is inserted into the pivot hole 23 and axially slidable between a locking position and a release position.
- the elastic element 31 is received in the pivot hole 23 to be biased between a stopping wall 231 of the pivot hole 23 and the pivot button 42 so that the pivot button 42 tends to move toward the locking position.
- the restriction toothed portion 43 is engaged with the two guiding toothed grooves 14 so that the driving handle 2 is unable to slide with respect to the two guiding toothed grooves 14.
- the pivot button 42 is pressed to move to the release position, as shown in Fig. 11 , the restriction toothed portion 43 is separated from the two guiding toothed grooves 14 so that the driving handle 2 is slidable with respect to the two guiding toothed grooves 14.
- the pivot button 42 has two said restriction toothed portions 43 corresponding to the two guiding toothed grooves 14 respectively.
- the pivot button 42 tends to retain at the locking position, and each of the restriction toothed portions 43 is engaged with one of the guiding toothed grooves 14.
- Each restriction toothed portion 43 has an inclined face section 431 along the axial direction of the pivot portion 4. When the pivot button 42 is pressed to move to the release position, the inclined face sections 431 of the restriction toothed portions 43 are separated from the guiding toothed grooves 14.
- the restriction toothed portion of a conventional pipe pliers and the guiding toothed groove contact each other because the restriction toothed portion is perpendicular to the axial direction of the pivot portion. Even though the restriction toothed portion has a chamfered edge at the opening end thereof, it is still difficult to make the restriction toothed portion and the guiding toothed groove be engaged precisely.
- the inclined face section 431 faces the guiding toothed groove 14, as shown in Fig. 11 and Fig.
- the inclined face section 431 can slide into the guiding toothed groove in a point contact manner so that the restriction toothed portion 43 can be engaged with the guiding toothed groove 14 smoothly.
- the pivot button 42 is able to move to the locking position smoothly, as shown in Fig. 10 and Fig. 10A .
- the inclined face sections 431 of the two restriction toothed portions 43 make the pivot button 42 easier to move from the release position to the locking position and easy to use.
- a neck portion 33 is located between the second clamping portion 31 and the sliding piece 32.
- Each of the side plates 131 has a flange 16 parallel to the two sliding grooves 15 wherein the flanges 16 face each other.
- the neck portion 33 is located between the two side plates 131 and is slidably arranged on the two flanges 16.
- the second clamping portion 31 is formed with an abutting face 35 at an end near the neck portion 33.
- the abutting face 35 abuts against the sliding face 132 on the top of the two side plates 131 to slide thereon.
- the clamping element 3 can slide steadily with respect to the first clamping body 1 to prevent the shaking between the clamping element 3 and the first clamping body 1.
- the sliding piece 32 is slidably arranged between the sliding grooves 15 so that the two sliding grooves 15 and the sliding piece 32 are prevented from collision by other objects to result the deformation of the sliding piece 32 and the sliding grooves 15.
- the two sliding grooves 15 are located inside the two side plates 131 so that dust may not accumulates in the sliding grooves and that the sliding grooves may not be splashed by fluid to result corrosion.
- the pipe pliers is more durable and has an improved accuracy.
- the maximum width of the second clamping portion 31 is defined as a first width A
- the maximum width of the sliding piece 32 is defined as a second width B.
- the first width A is 0.32-0.75 times the second width B.
- the first width A is 0.65 times the second width B.
- the second width B is larger than the first width A to make the sliding piece 32 stronger to support the second clamping portion 31.
- the recess 34 is formed on the sliding piece 32, and the recess 34 has a concave face.
- the protrusion 22 is rotatable along the axial direction in the recess 34.
- the second width can be smaller than the first width, and the recess is formed at an end of the second clamping portion facing the sliding piece.
- the protrusion of the driving handle is rotatably inserted into the recess to make the clamping element slide with respect to the first clamping body.
- the pivot button 42 includes a first connecting element 421 and a second connecting element 422.
- the first connecting element 421 has a rod portion 4211
- the second connecting element 422 has a sleeve portion 4221.
- the sleeve portion 4221 is sleeved onto the rod portion 4211.
- Each of the first connecting element 421 and the second connecting element 422 has a said restriction toothed portion 43.
- the two restriction toothed portions 43 correspond to the two guiding toothed grooves 14 respectively.
- the rod portion 4211 is formed with a notch 4212 at an end facing the sleeve portion 4221, as shown in Fig. 2 .
- the sleeve portion 4221 is formed with a protruding portion 4222 at the bottom thereof wherein the protruding portion 4222 abuts against the notch 4222, as shown in Fig. 2 , Fig. 10, and Fig. 11 .
- the notch 4212 and the protruding portion 4222 are engaged with each other inclinedly so that the two restriction toothed portions 43 may be precisely engaged and that the rod portion 4211 is unable to rotate with respect to the sleeve portion 4221.
- the sleeve portion 4221 is sleeved onto the rod portion 4211 in a tight-fit manner.
- the rod portion 4211 can have a non-circular cross-section, and the notch is also non-circular so that the restriction toothed portions 43 may be precisely engaged with the guiding toothed grooves 14.
- each of the first connecting element 421 and the second connecting element 422 preferably has a head portion 423 at an end remote from the other one of the first connecting element 421 and the second connecting element 422 wherein each of the head portion 423 has a larger diameter.
- the head portions of the first connecting element 421 and the second connecting element 422 are restricted at the inner wall of the guiding toothed grooves 14 so that the first connecting element 421 and the second connecting element 422 are unable to be separated from the two side plates 131.
- the sliding piece 3 has a rectangle cross-section.
- the sliding piece 32A has a circular cross-section ( Fig. 15 ), and the sliding grooves 15A have circular cross-sections.
- first clamping portion and the second clamping portion slide parallel to clamp the connector of pipe.
- the second clamping portion may reduce the shaking to improve the accuracy.
- the sliding piece is arranged between the two sliding grooves to prevent the sliding grooves and the sliding piece from collision by other objects resulting the deformation of the two sliding grooves.
- the two sliding grooves are arranged inside the side plates so that dust or fluid may not enter the sliding grooves.
- the pipe pliers is more durable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
Description
- The present invention relates to a hand tool, especially to a pipe pliers.
- A conventional pipe pliers includes a first clamping body and a second clamping body pivotally connected. The first clamping body has a sliding groove to allow the second clamping body to slide with respect to the first clamping body. A distance between a fixed clamping portion of the first clamping body and a movable clamping portion of the second clamping body is changeable by sliding the second clamping body. The movable clamping portion can be moved toward the fixed clamping portion by pivoting the second clamping body to clamp a pipe connector, as shown in patent TWM511931. However, in the conventional pipe pliers, the movable clamping portion approaches the fixed clamping portion by pivoting (in an arc path). When clamping the connector, the line defined by the force points of the fixed clamping portion and the movable clamping portion doesn't penetrate the center of the clamped object. That is, the two clamping portions are not parallel. Thus, the connector may slide between or separate from the fixed clamping portion and the movable clamping portions.
- The pipe pliers disclosed in the publication
EP 0421107 includes a main body. The main body has a fixed jaw and a clamping element sldiably disposed on the main body. Each of two sides of the main body is formed with a sliding groove. The clamping element has two side plates. Each side plate has a protrusion on a face facing the other side plate. The two protrusions are slidably disposed in the two sliding grooves to make the clamping element slidably disposed on the main body. However, the two protrusions are difficult to be processed or shaped except precision casting. The clamping element manufactured by precision casting is not durable and costs too much. - The pliers disclosed in publication
CN204843895 has a main body having two side plates. Each side plate is formed with a receiving groove. The clamping element (or the second pliers opening) having a guiding protrusion. The guiding protrusion is slidably disposed in the receiving groove to make the clamping element slidable with respect to the main body. However, the thickness of the guiding protrusion has to be larger than the width of the receiving groove for sliding. Thus, when assembling the clamping element and the main body, the two side plates (102 and 103 in this publication) have to be pulled away from each other, and the two protrusions enter the receiving groove followed by pushing the side plates until the clamping element is unable to leave the two side plates. The side plates are quite hard, so the operation has to be made by machines. However, the structure may be damaged to reduce the durability and accuracy. In addition, the length of the guiding protrusion along the sliding direction is short, so shaking is resulted between the clamping element and the main body. Besides, the guiding groove perpendicular to the receiving groove has plural teeth. During clamping, the guiding protrusion presses the teeth to damage the teeth. - The main object of the present invention is to provide a pipe pliers having a first clamping portion and a second clamping portion sliding parallel to clamping the polygon pipe connector. In addition, the second clamping portion prevents from shaking so as to improve the accuracy.
- To achieve the above and other objects, the pipe pliers of the present invention includes a first clamping body, a driving handle, and a clamping element. The first clamping body includes a first handle portion, a first clamping portion, and a body portiotn connected first handle portion and the first clamping portion therebetween. he body portion includes two side plates and is formed with two guiding toothed grooves. A receiving groove is defined between the two side plates. Each of the side plates is formed with a sliding groove on a face thereof facing the other side plate. The two sliding grooves are parallel to but not overlap the two guiding toothed grooves. The driving handle is restrictively and slidably arranged at the two guiding toothed grooves and pivotally connected to the first clamping body by a pivot portion. The driving handle has a second handle portion at an end and a protrusion at the other end. The clamping element includes a second clamping portion and a sliding piece connected to each other. The sliding piece is received in the receiving groove and slidably arranged in the two sliding grooves. The second clamping portion corresponds to the first clamping portion. The clamping element is formed with a recess. The protrusion is rotatably inserted in the recess. The protrusion is able to drive the clamping element to slide with respect to the first clamping body by the driving handle sliding or pivoting with respect to the first clamping body.
- The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
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Fig. 1 is a stereogram of the present invention; -
Fig. 2 is a breakdown drawing of the present invention; -
Fig. 3 is a partial enlargement of the present invention; -
Fig. 4 is a partial front view of the present invention; -
Fig. 5 is a partial enlargement of the present invention; -
Fig. 6 is an illustration of the present invention during operation; -
Fig. 7 to Fig. 9 are front views of the present invention during operation; -
Fig. 10 and Fig. 11 are A-A cross-sections of the present invention; -
Fig. 10A and Fig. 11A are partial enlargements ofFig. 10 and Fig. 11 ; -
Fig. 12 is a lateral view of the present invention; -
Fig. 13 and Fig. 14 are B-B cross-sections of the present invention; -
Fig. 13A and Fig. 14A are partial enlargements ofFig. 13 and Fig. 14 ; -
Fig. 15 is a breakdown drawing showing a second embodiment of the present invention. - Please refer to
Fig. 1 to Fig. 6 , the pipe pliers of the present invention includes afirst clamping body 1, a drivinghandle 2, and aclamping element 3. - The
first clamping body 1 includes afirst handle portion 11, afirst clamping portion 12, and abody portion 13 connecting thefirst handle portion 11 and thefirst clamping portion 12 therebetween. Thebody portion 13 includes twoside plates 131 and is formed with two guidingtoothed grooves 14. A receivinggroove 17 is defined between the twoside plates 131. Each of theside plates 131 is formed with a slidinggroove 15 on a face thereof facing theother side plate 131. The two slidinggrooves 15 are parallel to but not overlap the two guidingtoothed grooves 14. - The driving handle 2 is restrictively and slidably arranged at the two guiding
toothed grooves 14 and is pivotally connected to thefirst clamping body 1 by apivot portion 4. The driving handle 2 has asecond handle portion 21 at an end and aprotrusion 22 at the other end. - The clamping
element 3 includes asecond clamping portion 31 and a slidingpiece 32. The slidingpiece 32 is located in the receivinggroove 17 and is slidably arranged in the two slidinggrooves 15. Thesecond clamping portion 31 corresponds to thefirst clamping portion 12. The clampingelement 3 has arecess 34. Theprotrusion 22 is rotatably inserted into therecess 34. - Please refer to
Fig. 7 to Fig. 9 , theprotrusion 22 can drive the clampingelement 3 to slide with respect to thefirst clamping body 1 due to the sliding or pivoting of the driving handle 2 with respect to thefirst clamping body 1. More specifically, when the driving handle 2 slides with respect to thefirst clamping body 1, as shown inFig. 7 andFig. 8 , the drivinghandle 2 is free so that theprotrusion 22 drives theclamping element 3 to slightly slide along the two slidinggrooves 15 with respect to thefirst clamping body 1. When the driving handle 2 pivots with respect to thefirst clamping body 1, as shown inFig. 9 , theprotrusion 22 is rotatable in therecess 34 so that theprotrusion 22 can abut against therecess 34 to make it slightly slide along the two slidinggrooves 15 with respect to thefirst clamping body 1. Thus, thesecond clamping portion 31 can approach or leave thefirst clamping portion 12 to clamp a polygonal pipe connector or other objects. - Please refer to
Fig. 10 and Fig. 11 , thepivot portion 4 includes anelastic element 41 and apivot button 42. The driving handle 2 has apivot hole 23. Thepivot button 42 is assembled by a first connectingelement 421 and a second connectingelement 422 and inserts into thepivot hole 23 and the guidingtoothed groove 14. Thepivot portion 4 further has at least one restrictiontoothed portion 43. Thepivot button 42 is inserted into thepivot hole 23 and axially slidable between a locking position and a release position. Theelastic element 31 is received in thepivot hole 23 to be biased between a stoppingwall 231 of thepivot hole 23 and thepivot button 42 so that thepivot button 42 tends to move toward the locking position. When thepivot button 42 is located at the locking position, as shown inFig. 10 , the restrictiontoothed portion 43 is engaged with the two guidingtoothed grooves 14 so that the driving handle 2 is unable to slide with respect to the two guidingtoothed grooves 14. When thepivot button 42 is pressed to move to the release position, as shown inFig. 11 , the restrictiontoothed portion 43 is separated from the two guidingtoothed grooves 14 so that the driving handle 2 is slidable with respect to the two guidingtoothed grooves 14. - Preferably, the
pivot button 42 has two said restriction toothedportions 43 corresponding to the two guidingtoothed grooves 14 respectively. Thepivot button 42 tends to retain at the locking position, and each of the restrictiontoothed portions 43 is engaged with one of the guidingtoothed grooves 14. Each restrictiontoothed portion 43 has aninclined face section 431 along the axial direction of thepivot portion 4. When thepivot button 42 is pressed to move to the release position, theinclined face sections 431 of the restrictiontoothed portions 43 are separated from the guidingtoothed grooves 14. More specifically, when thepivot button 42 is located at the release position and the width of the opening is changed, if thepivot button 42 is to be moved toward the locking position, the restriction toothed portion of a conventional pipe pliers and the guiding toothed groove contact each other because the restriction toothed portion is perpendicular to the axial direction of the pivot portion. Even though the restriction toothed portion has a chamfered edge at the opening end thereof, it is still difficult to make the restriction toothed portion and the guiding toothed groove be engaged precisely. In the present invention, theinclined face section 431 faces the guidingtoothed groove 14, as shown inFig. 11 andFig. 11A , so theinclined face section 431 can slide into the guiding toothed groove in a point contact manner so that the restrictiontoothed portion 43 can be engaged with the guidingtoothed groove 14 smoothly. Thus, thepivot button 42 is able to move to the locking position smoothly, as shown inFig. 10 andFig. 10A . As a result, theinclined face sections 431 of the two restrictiontoothed portions 43 make thepivot button 42 easier to move from the release position to the locking position and easy to use. - Practically, a
neck portion 33 is located between thesecond clamping portion 31 and the slidingpiece 32. Each of theside plates 131 has aflange 16 parallel to the two slidinggrooves 15 wherein theflanges 16 face each other. Theneck portion 33 is located between the twoside plates 131 and is slidably arranged on the twoflanges 16. Thesecond clamping portion 31 is formed with an abuttingface 35 at an end near theneck portion 33. The abuttingface 35 abuts against the slidingface 132 on the top of the twoside plates 131 to slide thereon. Thus, the clampingelement 3 can slide steadily with respect to thefirst clamping body 1 to prevent the shaking between the clampingelement 3 and thefirst clamping body 1. The slidingpiece 32 is slidably arranged between the slidinggrooves 15 so that the two slidinggrooves 15 and the slidingpiece 32 are prevented from collision by other objects to result the deformation of the slidingpiece 32 and the slidinggrooves 15. Besides, the two slidinggrooves 15 are located inside the twoside plates 131 so that dust may not accumulates in the sliding grooves and that the sliding grooves may not be splashed by fluid to result corrosion. Thus, the pipe pliers is more durable and has an improved accuracy. - Please refer to
Fig. 4 , when observed along the axial direction, the maximum width of thesecond clamping portion 31 is defined as a first width A, and the maximum width of the slidingpiece 32 is defined as a second width B. The first width A is 0.32-0.75 times the second width B. In the present embodiment, the first width A is 0.65 times the second width B. The second width B is larger than the first width A to make the slidingpiece 32 stronger to support thesecond clamping portion 31. Thus, the deformation of theclamping element 3 and the bending of thesecond clamping portion 31 are prevented. Preferably, therecess 34 is formed on the slidingpiece 32, and therecess 34 has a concave face. Theprotrusion 22 is rotatable along the axial direction in therecess 34. In other possible embodiments, the second width can be smaller than the first width, and the recess is formed at an end of the second clamping portion facing the sliding piece. The protrusion of the driving handle is rotatably inserted into the recess to make the clamping element slide with respect to the first clamping body. - More specifically, the
pivot button 42 includes a first connectingelement 421 and a second connectingelement 422. The first connectingelement 421 has arod portion 4211, and the second connectingelement 422 has asleeve portion 4221. Thesleeve portion 4221 is sleeved onto therod portion 4211. Each of the first connectingelement 421 and the second connectingelement 422 has a said restrictiontoothed portion 43. The two restrictiontoothed portions 43 correspond to the two guidingtoothed grooves 14 respectively. In the present embodiment, therod portion 4211 is formed with anotch 4212 at an end facing thesleeve portion 4221, as shown inFig. 2 . Thesleeve portion 4221 is formed with a protrudingportion 4222 at the bottom thereof wherein the protrudingportion 4222 abuts against thenotch 4222, as shown inFig. 2 ,Fig. 10, and Fig. 11 . Thenotch 4212 and the protrudingportion 4222 are engaged with each other inclinedly so that the two restrictiontoothed portions 43 may be precisely engaged and that therod portion 4211 is unable to rotate with respect to thesleeve portion 4221. Thesleeve portion 4221 is sleeved onto therod portion 4211 in a tight-fit manner. Therod portion 4211 can have a non-circular cross-section, and the notch is also non-circular so that the restrictiontoothed portions 43 may be precisely engaged with the guidingtoothed grooves 14. - Besides, each of the first connecting
element 421 and the second connectingelement 422 preferably has ahead portion 423 at an end remote from the other one of the first connectingelement 421 and the second connectingelement 422 wherein each of thehead portion 423 has a larger diameter. The head portions of the first connectingelement 421 and the second connectingelement 422 are restricted at the inner wall of the guidingtoothed grooves 14 so that the first connectingelement 421 and the second connectingelement 422 are unable to be separated from the twoside plates 131. - In the present embodiment, the sliding
piece 3 has a rectangle cross-section. However, as shown inFig. 12 to Fig. 15 , in another embodiment of the present invention, the slidingpiece 32A has a circular cross-section (Fig. 15 ), and the slidinggrooves 15A have circular cross-sections. - In conclusion, the first clamping portion and the second clamping portion slide parallel to clamp the connector of pipe. In addition, the second clamping portion may reduce the shaking to improve the accuracy.
- Besides, the sliding piece is arranged between the two sliding grooves to prevent the sliding grooves and the sliding piece from collision by other objects resulting the deformation of the two sliding grooves. In addition, the two sliding grooves are arranged inside the side plates so that dust or fluid may not enter the sliding grooves. Thus, the pipe pliers is more durable.
Claims (12)
- A pipe pliers, including:a first clamping body (1), including a first handle portion (11), a first clamping portion (12), and a body portion (13) connected first handle portion (11) and the first clamping portion (12) therebetween, the body portion (13) including two side plates (131) and being formed with two guiding toothed grooves (14), a receiving groove (17) being defined between the two side plates (131), each of the side plates (131) being formed with a sliding groove (15) on a face thereof facing the other side plate (131), the two sliding grooves (15) being parallel to but not overlap the two guiding toothed grooves (14);a driving handle (2), restrictively and slidably arranged at the two guiding toothed grooves (14) and pivotally connected to the first clamping body (1) by a pivot portion (4), the driving handle (2) having a second handle portion (21) at an end and a protrusion (22) at the other end;a clamping element (3), including a second clamping portion (31) and a sliding piece (32) connected to each other, the sliding piece (32) being received in the receiving groove (17) and slidably arranged in the two sliding grooves (15), the second clamping portion (31) corresponding to the first clamping portion (12), the clamping element (3) being formed with a recess (34), the protrusion (22) being rotatably inserted in the recess (34), the protrusion (22) being able to drive the clamping element (3) to slide with respect to the first clamping body (1) by the driving handle (2) sliding or pivoting with respect to the first clamping body (1);wherein the pivot portion (4) includes an elastic element (41) and pivot button (42), the driving handle (2) is formed with a pivot hole (23), the pivot button (42) has at least one restriction toothed portion (43), the pivot button (42) is inserted into the pivot hole (23) and is axially slidable between a locking position and a release position, the elastic element (41) is biased between a stopping wall (231) of the pivot hole (23) and the pivot button (42) so that the pivot button (42) tends to move toward the locking position to be locked;wherein when the pivot button (42) is located at the locking position, the restriction toothed portion (43) and the two guiding toothed grooves (14) are engaged to each other so that the driving handle (2) is unable to slide with respect to the two guiding toothed grooves (14); when the pivot button (42) is located at the release position, the restriction toothed portion (43) is separated from the two guiding toothed grooves (14) so that the driving handle (2) is slidable with respect to the two guiding toothed grooves (14).
- The pipe pliers of claim 1, wherein the pivot button (42) has two said restriction toothed portions (43), the two restriction toothed portions (43) correspond to the two guiding toothed grooves (14) respectively, each restriction toothed portion (43) is engaged with one of the guiding toothed grooves (14) when the pivot button (42) is located at the locking position, each of the restriction toothed portions (43) has an inclined face section (431) at a side along an axial direction of the pivot portion (4), the inclined face section (431) of each of the restriction toothed portions (43) faces its corresponding guiding toothed groove (14).
- The pipe pliers of claim 1, wherein a neck portion (33) is formed between the second clamping portion (31) and the sliding piece (32), each of the side plates (131) is formed with a flange (16) parallel to the sliding grooves (15), the neck portion (33) is located between the side plates (131), the two flanges (16) are slidably received in the neck portion (33).
- The pipe pliers of claim 3, wherein a cross-section of the sliding piece (32) is a rectangle.
- The pipe pliers of claim 3, wherein a cross-section of the sliding piece (32A) is circular.
- The pipe pliers of claim 3, wherein the second clamping portion (31) is formed with an abutting face (35) near the neck portion (33), the abutting face (35) abuts against sliding faces (132) on tops of the two side plates (131).
- The pipe pliers of claim 3, wherein when observed along the axial direction, a maximum width of the second clamping portion (31) is defined as a first width, a maximum width of the sliding piece (32) is defined as a second width, the first width is 0.32-0.75 times the second width.
- The pipe pliers of claim 2, wherein a neck portion (33) is formed between the second clamping portion (31) and the sliding piece (32), each of the side plates (131) is formed with a flange (16) parallel to the sliding grooves (15), the neck portion (33) is located between the side plates (131), the two flanges (16) are slidably received in the neck portion (33); the second clamping portion (31) is formed with an abutting face (35) near the neck portion (33), the abutting face (35) abuts against sliding faces (132) on tops of the two side plates (131); when observed along the axial direction, a maximum width of the second clamping portion (31) is defined as a first width, a maximum width of the sliding piece (32) is defined as a second width, the first width is 0.65 times the second width; the recess (34) is formed on the sliding piece (32), the recess (34) has a concave face, the protrusion (22) is rotatable in the recess (34) around the pivot portion (4).
- The pipe pliers of claim 1, wherein the recess (34) is formed on the sliding piece (32), the recess (34) has a concave face, the protrusion (22) is rotatable in the recess (34) around the pivot portion (4).
- The pipe pliers of claim 1, wherein the pivot button (42) includes a first connecting element (421) and a second connecting element (422), the first connecting element (421) has a rod portion (4211), the second connecting element (422) has a sleeve portion (4221), the sleeve portion (4221) is sleeved onto the rod portion (4211), each of the first connecting element (421) and second connecting element (422) is formed with one of the restriction toothed portions (43).
- The pipe pliers of claim 10, wherein a notch (4212) is formed on an end of the rod portion (4211) facing the sleeve portion (4221), a protruding portion (4222) is formed on a bottom of the sleeve portion (4221) wherein the protruding portion (4222) is engaged with the notch (4212), the sleeve portion (4221) is sleeved onto the rod portion (4211) in a tight-fit manner.
- The pipe pliers of claim 10, wherein each of the first connecting element (421) and the second connecting element (422) is formed with a head portion (423) at an end remote from the other one of the first connecting element (421) and the second connecting element (422), each of the head portions (423) radially extends and has an expanded diameter, the head portions (423) are restricted at inner walls of the two guiding toothed grooves (14).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18153080.9A EP3513909B1 (en) | 2018-01-23 | 2018-01-23 | Pipe pliers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18153080.9A EP3513909B1 (en) | 2018-01-23 | 2018-01-23 | Pipe pliers |
Publications (2)
Publication Number | Publication Date |
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EP3513909A1 true EP3513909A1 (en) | 2019-07-24 |
EP3513909B1 EP3513909B1 (en) | 2021-07-21 |
Family
ID=61024612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18153080.9A Active EP3513909B1 (en) | 2018-01-23 | 2018-01-23 | Pipe pliers |
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EP (1) | EP3513909B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2576590A (en) * | 2018-08-21 | 2020-02-26 | Snap On Tools Corp | Adjustable pliers |
TWI694900B (en) * | 2019-08-01 | 2020-06-01 | 李宏銘 | Pliers |
USD991763S1 (en) | 2021-03-31 | 2023-07-11 | Knipex-Werk C. Gustav Putsch Kg | Pliers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US1145067A (en) * | 1912-11-22 | 1915-07-06 | Raymond M Kelly | Wrench. |
EP0421107A2 (en) | 1989-09-04 | 1991-04-10 | Knipex-Werk C. Gustav Putsch | Pliers |
CN204843895U (en) | 2015-08-27 | 2015-12-09 | 上海美瑞实业有限公司 | Keep silent fast accent pincers of parallel translation |
TW201622899A (en) * | 2014-12-31 | 2016-07-01 | King Tony Tools Co Ltd | Pipe wrench structure |
CN106475922A (en) * | 2015-08-27 | 2017-03-08 | 上海美瑞实业有限公司 | The fast tune pincers that jaw is moved in parallel |
-
2018
- 2018-01-23 EP EP18153080.9A patent/EP3513909B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1145067A (en) * | 1912-11-22 | 1915-07-06 | Raymond M Kelly | Wrench. |
EP0421107A2 (en) | 1989-09-04 | 1991-04-10 | Knipex-Werk C. Gustav Putsch | Pliers |
TW201622899A (en) * | 2014-12-31 | 2016-07-01 | King Tony Tools Co Ltd | Pipe wrench structure |
CN204843895U (en) | 2015-08-27 | 2015-12-09 | 上海美瑞实业有限公司 | Keep silent fast accent pincers of parallel translation |
CN106475922A (en) * | 2015-08-27 | 2017-03-08 | 上海美瑞实业有限公司 | The fast tune pincers that jaw is moved in parallel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2576590A (en) * | 2018-08-21 | 2020-02-26 | Snap On Tools Corp | Adjustable pliers |
GB2576590B (en) * | 2018-08-21 | 2021-09-08 | Snap On Tools Corp | Adjustable pliers |
TWI694900B (en) * | 2019-08-01 | 2020-06-01 | 李宏銘 | Pliers |
USD991763S1 (en) | 2021-03-31 | 2023-07-11 | Knipex-Werk C. Gustav Putsch Kg | Pliers |
Also Published As
Publication number | Publication date |
---|---|
EP3513909B1 (en) | 2021-07-21 |
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