Portable light pipe wrench

Abstract

The invention relates to the technical field of hardware tools, in particular to a portable light pipe wrench which comprises a wrench handle, and adjusting teeth are arranged on the portion, close to the front end, of the outer side of the wrench handle; the upper plier body is rotationally mounted at the front end of the plier handle through a pin shaft, and an upper jaw assembly is arranged in the upper plier body; the rectangular sliding seat sleeves the periphery of the forceps handle, an adjusting ring matched with the adjusting teeth is arranged in the rectangular sliding seat, and one end of the rectangular sliding seat is fixedly connected with a supporting seat; the lower jaw is detachably and fixedly mounted at the top end of the supporting seat; through the screw connection of the upper jaw and the triangular prism and the magnetic type detachable structure of the lower jaw and the supporting seat, the independent replacement and flexible switching of the upper jaw and the lower jaw are realized. When the jaw is abraded, the whole pipe wrench does not need to be replaced, and only a single jaw needs to be replaced, so that the use cost is reduced; and meanwhile, different types of jaws with thin tooth surfaces, middle tooth surfaces, thick tooth surfaces and the like can be selected according to the material and the surface state of the pipe fitting, so that the pipe fitting is prevented from being damaged, and the clamping stability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware tools, in particular to a portable light pipe wrench. BACKGROUND

[0002] Pipe wrench is a special tool used for clamping and rotating cylindrical workpieces such as metal pipes and valves in the field of hardware tools, which can realize the fastening or dismounting operation of the pipe and is an indispensable basic tool in various pipe-related operations.

[0003] The pipe wrench in the prior art is usually composed of a fixed wrench handle, a movable wrench body, a fixed wrench mouth and a movable wrench mouth. The fixed wrench mouth is generally designed in an integrated manner with the fixed wrench handle or the movable wrench body. The movable wrench mouth is adjusted in size between the fixed wrench mouth through an adjusting mechanism, such as an adjusting nut or an adjusting screw, to adapt to pipe joints of different diameters. However, this kind of traditional pipe wrench still has the following disadvantages in actual use: Since the fixed wrench mouth is integrated with the wrench body and the movable wrench mouth is fixedly connected with the adjusting mechanism, when the clamping force is reduced due to wear and deformation of the wrench mouth, or when different materials and surface conditions of the pipe joint are faced, the operation requirements cannot be met by replacing the wrench mouth with corresponding teeth or material, and the entire pipe wrench has to be replaced, which increases the use cost. Although some pipe wrenches attempt to realize detachable wrench mouth, they mostly adopt the way of fixing by multiple bolts, which is complicated in dismounting and mounting processes and needs the help of additional tools. Moreover, the positioning accuracy of the replaced wrench mouth is low, and the clamping deviation is easy to occur, which affects the operation stability. SUMMARY

[0004] The present application aims to provide a portable light pipe wrench to solve the problems in the background art.

[0005] The object of the present application can be achieved by the following technical solutions: A portable light pipe wrench, comprising: a wrench handle, an adjusting tooth is arranged on the outer side of the wrench handle near the front end; an upper wrench body is rotatably installed at the front end of the wrench handle by a pin shaft, and an upper wrench mouth assembly is arranged in the upper wrench body; a rectangular slide is sleeved on the periphery of the wrench handle, and an adjusting ring is arranged in the rectangular slide to cooperate with the adjusting tooth; one end of the rectangular slide is fixedly connected with a support seat; and a lower wrench mouth is detachably fixedly installed at the top end of the support seat.

[0006] Further, the upper wrench mouth assembly comprises a mounting seat fixedly installed at the top end of the upper wrench body, a clamping groove is arranged in the center of the end face of the mounting seat to penetrate the mounting seat, and three circumferentially arrayed positioning grooves are arranged at one end of the clamping groove. The mounting column is slidably installed in the mounting seat through a through hole, and three positioning blocks are fixedly installed on the periphery of the mounting column near one end of the positioning groove. Three limiting holes are formed in the middle of the periphery of the mounting column and are aligned with the three positioning blocks. A bolt is threadedly installed on one side of the mounting seat, and the front end of the bolt is slidably inserted into one of the limiting holes.

[0007] Further, the upper jaws are fixedly connected between the upper jaws and the side surfaces of the triangular prism through screws, and the clamping surfaces of the three upper jaws are respectively a fine tooth surface, a medium tooth surface and a coarse tooth surface.

[0008] Further, a clamping groove is formed in the bottom end of the upper jaw body, the bottom end of the upper jaw body is clamped on the outside of the top end of the handle through the clamping groove, and the pin shaft is rotatably connected between the upper jaw body and the handle through the clamping groove. The top surface of the clamping groove is an inclined surface, and the end of the inclined surface close to the support seat is a lower end. A circular hole is formed in the inclined surface near the higher end, a spring is installed in the circular hole, the top end of the spring is fixedly connected to the top end of the circular hole, and the bottom end of the spring is in contact with the top end of the handle. In the initial state, the spring force makes the lower position of the inclined surface in contact with the top surface of the handle, and at this time, the handle top surface, the inclined surface and the spring form a triangular structure, and the upper jaw body and the handle are in a parallel state.

[0009] Further, a butt joint groove is formed in the top end of the support seat, and a second magnet is fixedly installed at the bottom of the butt joint groove.

[0010] Further, a plug is fixedly installed on the back surface of the lower jaw body, the end of the plug away from the lower jaw body is fixedly installed with a first magnet having a magnetic pole opposite to that of the second magnet.

[0011] Further, an installation groove for installing an adjusting ring is formed in the middle of the inner wall of the rectangular sliding seat, and through grooves are formed in the two sides of the rectangular sliding seat and communicate with the installation groove. The adjusting ring is rotatably installed in the rectangular sliding seat through the installation groove, the installation groove is engaged with the adjusting tooth, and part of the periphery of the installation groove extends to the outside of the rectangular sliding seat through the through groove.

[0012] The beneficial effects of the present application are: 1. The upper jaw and the lower jaw are independently replaced and flexibly switched through the screw connection of the upper jaw and the three-prism, and the magnetic detachable structure of the lower jaw and the support seat. When the jaw is worn, the entire pipe wrench does not need to be replaced, and only a single jaw needs to be replaced, reducing the use cost; at the same time, different types of jaws such as fine tooth surface, medium tooth surface and coarse tooth surface can be selected according to the pipe material and surface state, avoiding pipe damage and improving clamping stability.

[0013] 2. The upper jaw assembly of the present application realizes the preliminary positioning of the upper jaw through the cooperation of the positioning clamping block and the positioning groove, and the secondary limiting of the bolt and the limiting hole, so as to ensure that the upper jaw does not deviate and rotate during operation, has high positioning accuracy, and the three-prism integrates three upper jaws, without the need to carry spare jaws, improving portability.

[0014] 3. The spring at the bottom end of the upper jaw body cooperates with the inclined surface, on the one hand, the stable clamping force is provided by the spring recovery elastic force, without the need for the operator to continuously exert force with the hand to maintain clamping, reducing hand fatigue; on the other hand, the jaw handle angle can be adjusted without detaching the pipe by further compressing the spring, solving the problem that the traditional pipe wrench needs to be loosened for resetting, realizing continuous force exertion rotation, and improving operation efficiency.

[0015] 4. The lower jaw is positioned by the insertion block and the butt joint groove, and is fixed by the magnet one and the magnet two, without the need for tools during disassembly and assembly, and the operation is convenient; different types of lower jaws can be matched to form a flexible combination with the upper jaw, further increasing the applicable scenarios of the pipe wrench. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor; Figure 1 is a three-dimensional schematic view of the overall structure of the present application; Figure 2 is an enlarged view of part A in Figure 1 ; Figure 3 is a three-dimensional schematic view of the upper jaw assembly in the present application; Figure 4 is a front view of Figure 1 ; Figure 5 is an enlarged view of part C in Figure 4 ; Figure 6 is an enlarged view of part D in Figure 4 ; Figure 7 is an enlarged view of part B in Figure 4 ; The reference signs in the drawings are as follows: 1- handle, 2- adjusting tooth, 3- support seat, 4- upper plier body, 5- rectangular slide, 6- adjusting ring, 7- mounting seat, 8- bolt, 9- upper jaw assembly, 10- lower jaw, 11- pin shaft, 12- clamping groove, 13- through hole, 14- positioning groove, 15- mounting column, 16- positioning clamping block, 17- limiting hole, 18- triangular prism, 19- upper jaw, 20- mounting groove, 21- through groove, 22- insertion block, 23- magnet one, 24- butt joint groove, 25- magnet two, 26- round hole, 27- spring, 28- inclined surface. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0018] Embodiment 1 Please refer to Figure 1 , Figure 4 and Figure 7 In the embodiments of the present application, a portable light pipe wrench comprises: The outer side of the handle 1 is provided with adjusting teeth 2 near the front end; The upper plier body 4 is rotatably installed at the front end of the handle 1 through the pin shaft 11, and the upper plier body 4 is provided with the upper jaw assembly 9; The rectangular slide 5 is sleeved on the periphery of the handle 1, the rectangular slide 5 is provided with the adjusting ring 6 used in cooperation with the adjusting teeth 2, and one end of the rectangular slide 5 is fixedly connected with the support seat 3; And the lower jaw 10 is detachably and fixedly installed at the top end of the support seat 3; The inner wall of the rectangular slide 5 is provided with the mounting groove 20 for installing the adjusting ring 6 at the middle position, and the two sides of the rectangular slide 5 are provided with the through groove 21 penetrating the mounting groove 20; The adjusting ring 6 is rotatably installed in the rectangular slide 5 through the mounting groove 20, the mounting groove 20 is engaged with the adjusting teeth 2, and part of the periphery of the mounting groove 20 extends to the outside of the rectangular slide 5 through the through groove 21.

[0019] In the present application: When the opening is adjusted, the operator rotates the adjusting ring 6, and due to the engagement between the adjusting ring 6 and the adjusting teeth 2 on the handle 1, the rotation of the adjusting ring 6 is converted into the axial sliding of the rectangular slide 5 along the handle 1, and the rectangular slide 5 drives the support seat 3 and the lower jaw 10 to move synchronously, thereby changing the distance between the lower jaw 10 and the upper jaw assembly 9 on the upper jaw body 4, and realizing the quick adjustment of the opening size of the pipe wrench.

[0020] Embodiment 2: Please refer to Figures 1 to 4 On the basis of Embodiment 1, the upper jaw assembly 9 comprises a mounting seat 7 fixedly installed at the top end of the upper jaw body 4, and a clamping groove 12 is formed in the center position of the end face of the mounting seat 7 to penetrate the mounting seat 7, and one end of the clamping groove 12 is provided with three circumferentially arrayed positioning grooves 14; A mounting column 15 is slidingly installed in the mounting seat 7 through the through hole 13, three positioning clamping blocks 16 are fixedly installed on the outer periphery of the mounting column 15 at one end close to the positioning grooves 14, and the mounting column 15 is fixedly installed at the other end with a triangular prism 18, and the upper jaw 19 is fixedly installed on the three side faces of the triangular prism 18; Three limiting holes 17 are formed in the outer periphery of the mounting column 15 at the middle position, and the three limiting holes 17 are aligned with the three positioning clamping blocks 16, respectively; A bolt 8 is threadedly installed through the mounting seat 7 at one side, and the front end of the bolt 8 is slidingly inserted in one limiting hole 17.

[0021] When it is necessary to select different upper jaws 19 according to the material and surface state of the pipe, first, the bolt 8 is loosened, so that the front end of the bolt 8 is moved out of the currently inserted limiting hole 17, and the limiting of the mounting column 15 is released; then, a pushing force is applied to the end of the triangular prism 18 or the upper jaw 19, so that the mounting column 15 is slidingly driven along the through hole 13, and the positioning clamping block 16 is separated from the positioning groove 14; then, the mounting column 15 is rotated, so that the upper jaw 19 (for example, the upper jaw 19 with a fine tooth surface is selected when copper pipes are clamped, and the upper jaw 19 with a coarse tooth surface is selected when cast iron pipes are clamped) corresponding to the operation requirement is rotated to the working position; Then, the mounting column 15 is pushed in the reverse direction, so that the positioning clamping block 16 is re-embedded in the corresponding positioning groove 14, and the preliminary positioning of the upper jaw 19 is realized; finally, the bolt 8 is tightened, so that the front end of the bolt 8 is inserted into the limiting hole 17 corresponding to the current upper jaw 19, and the fixing of the upper jaw 19 is completed.

[0022] The embodiment realizes the rapid positioning of the upper jaw 19 through the cooperation of the positioning block 16 and the positioning groove 14, and ensures that the upper jaw 19 will not deviate or rotate during the operation process through the secondary limiting of the screw bolt 8, so that the positioning accuracy is high. Meanwhile, the switching of the upper jaw 19 can be completed by only loosening and tightening the screw bolt 8 and rotating the mounting column 15, and the whole process does not need to disassemble multiple components, so that the operation steps are simplified. The three prisms 18 are integrated with three different types of upper jaws 19, so that the tool carrying amount is reduced, the portability is improved, the problem that the jaw of the traditional pipe wrench cannot be replaced is effectively solved, and the service life of the pipe wrench as a whole is prolonged.

[0023] Embodiment 3 On the basis of Embodiment 2, the upper jaw 19 is fixedly connected between the screw and the side surface of the three-prism 18, and the clamping surfaces of the three upper jaws 19 are respectively a fine-tooth surface, a medium-tooth surface and a coarse-tooth surface.

[0024] When a certain upper jaw 19 on the three-prism 18 is seriously worn and cannot meet the clamping requirement, the screw connecting the upper jaw 19 and the three-prism 18 can be unscrewed, the worn upper jaw 19 can be disassembled, and after a new upper jaw 19 of the same type is replaced, the screw can be tightened again to complete the replacement of the upper jaw 19; During the operation, the upper jaw 19 with the corresponding tooth surface is selected according to the characteristics of the pipe: when the pipe with a smooth and easy-to-scratch clamping surface is clamped, the upper jaw 19 with a fine-tooth surface is selected, the contact area between the fine-tooth surface and the pipe is large, the clamping force can be dispersed, and scratches on the surface of the pipe can be avoided; when the pipe with a rough clamping surface needs strong clamping force, the upper jaw 19 with a coarse-tooth surface is selected, the teeth of the coarse-tooth surface can be embedded into the rust layer or rough texture on the surface of the pipe to prevent slipping and improve the clamping stability; when the ordinary carbon steel pipe is clamped, the upper jaw 19 with a medium-tooth surface is selected, and the clamping force and the protection of the surface of the pipe are considered.

[0025] In the embodiment, the upper jaw 19 is fixed with the three-prism 18 through a screw, the independent replacement of the single upper jaw 19 is realized, the whole upper jaw assembly 9 does not need to be replaced due to the wear of one jaw, and the maintenance cost is further reduced. Meanwhile, the upper jaws 19 with fine-tooth surfaces, medium-tooth surfaces and coarse-tooth surfaces are designed in a classified manner, the pipes with different materials and different surface states can be adapted, the problem of poor adaptability of the single-tooth-surface jaw of the traditional pipe wrench is solved, and the application range of the pipe wrench is expanded.

[0026] Embodiment 4 Please refer to Figure 1 , Figure 4 and Figure 5 , on the basis of Embodiment 1, the bottom end of the upper jaw body 4 is provided with a clamping groove 12, the bottom end of the upper jaw body 4 is clamped outside the top end of the handle 1 through the clamping groove 12, and the rotating connection between the upper jaw body 4 and the handle 1 is realized through the pin shaft 11 penetrating the upper jaw body 4 and the handle 1. The top surface of the card slot 12 is a slope 28, and the end of the slope 28 close to the support base 3 is a lower end; A round hole 26 is formed on the slope 28 close to the higher end, and a spring 27 is installed in the round hole 26. The top end of the spring 27 is fixedly connected with the top end of the round hole 26, and the bottom end of the spring 27 is in contact with the top end of the handle 1. In the initial state, the spring 27 provides a force to make the lower end of the slope 28 in contact with the top surface of the handle 1. At this time, the top surface of the handle 1, the slope 28 and the spring 27 form a triangular structure, and the upper plier body 4 is in parallel with the handle 1.

[0027] When the pipe is clamped in the downward opening manner, first, the position of the lower plier 10 is adjusted according to the diameter of the pipe by the method in the embodiment 1, so that the pipe is located between the upper plier 19 of the upper plier assembly 9 and the lower plier 10. Then, the upper plier body 4 is pressed downward, and the upper plier body 4 rotates around the pin shaft 11. The slope 28 is separated from the top surface of the handle 1, and the spring 27 is compressed. The restoring force of the spring 27 is transmitted to the upper plier 19 through the upper plier body 4, so that the upper plier 19 and the lower plier 10 jointly clamp the pipe. At this time, the clamping force is provided by the restoring force of the spring 27. The operator rotates the handle 1 to rotate the pipe by the lever principle, so as to realize the fastening or dismounting of the pipe.

[0028] When the handle 1 is rotated to an angle that is not suitable for exerting force, a pressure is applied to the handle 1 towards the pipe, so that the pipe is extruded between the upper plier body 4. The spring 27 is further compressed, the opening between the upper plier 19 and the lower plier 10 is slightly larger, and the friction between the pipe and the upper plier 19 and the lower plier 10 is reduced. At this time, the handle 1 can be rotated circumferentially to a suitable position for exerting force without detaching the pipe. After the pressure on the handle 1 is released, the spring 27 returns to the original compressed state, the upper plier 19 and the lower plier 10 re-clamp the pipe, and the operator can exert force and rotate again to realize continuous operation.

[0029] In this embodiment, the spring 27 and the slope 28 are matched. On the one hand, the restoring force of the spring 27 provides a stable clamping force, avoiding the problem that the traditional pipe pliers rely on the continuous exertion of force by the operator's hand to maintain clamping, reducing the fatigue of the hand. On the other hand, the angle of the handle 1 is reset by further compressing the spring 27, without releasing the clamping state of the pliers and the pipe, solving the problem that the traditional pipe pliers cannot continuously exert force and rotate, and the operation process does not need to be interrupted. Especially when dismounting a pipe with high fastening degree, the operation steps can be greatly reduced, and the operation efficiency is improved.

[0030] Embodiment 5: Please refer to Figure 6 On the basis of the embodiment 1, a butt joint groove 24 is formed at the top end of the support base 3, and a magnet 25 is fixedly installed at the bottom of the butt joint groove 24.

[0031] The back center position of the lower jaw 10 is fixedly installed with an insertion block 22 matched with the butt joint groove 24, and the end of the insertion block 22 away from the lower jaw 10 is fixedly installed with a magnet 23 opposite to the magnetic pole of the magnet 2.

[0032] According to the operation requirement, the corresponding type of lower jaw 10 is selected, the insertion block 22 on the back of the lower jaw 10 is aligned with the butt joint groove 24 at the top end of the support seat 3 and inserted, because the magnet 23 is opposite to the magnetic pole of the magnet 2, the two generate adsorption force, the insertion block 22 is stably fixed in the butt joint groove 24, and the installation of the lower jaw 10 is completed; when the lower jaw 10 needs to be replaced, the lower jaw 10 only needs to be pulled upward to overcome the adsorption force between the magnet 23 and the magnet 2, so that the insertion block 22 can be pulled out of the butt joint groove 24, and the quick disassembly of the lower jaw 10 is realized.

[0033] The embodiment realizes the tool-free quick disassembly of the lower jaw 10 through the adsorption cooperation of the magnet 23 and the magnet 2, in combination with the positioning of the insertion block 22 and the butt joint groove 24, compared with the disassembly mode that the lower jaw of the traditional pipe wrench needs to twist a plurality of bolts, the operation convenience is significantly improved; meanwhile, the magnetic adsorption type fixing mode can ensure that the lower jaw 10 does not loosen during the operation process, and the matching structure of the insertion block 22 and the butt joint groove 24 can ensure the installation positioning accuracy of the lower jaw 10, and avoid the unstable clamping problem caused by the deviation of the lower jaw 10.

[0034] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A portable lightweight pipe wrench, characterized in that, include: The clamp handle (1) has an adjustment tooth (2) on the outer side near the front end. The upper jaw assembly (9) is provided in the upper jaw assembly and is rotatably mounted on the front end of the handle (1) by a pin (11). A rectangular slide (5) is fitted around the pliers handle (1). An adjusting ring (6) is provided in the rectangular slide (5) to cooperate with the adjusting teeth (2). A support seat (3) is fixedly connected to one end of the rectangular slide (5). And a lower jaw (10) that is detachably fixed to the top of the support base (3).

2. The portable lightweight pipe wrench according to claim 1, characterized in that, The upper jaw assembly (9) includes a mounting base (7) fixedly installed on the top of the upper jaw body (4). The mounting base (7) has a slot (12) through which the mounting base (7) passes at the center of its end face. One end of the slot (12) is provided with three circumferentially arrayed positioning slots (14). The mounting base (7) has a mounting post (15) that is slidably installed through a through hole (13). Three positioning blocks (16) that cooperate with the three positioning slots (14) are fixedly installed on the periphery of the mounting post (15) at one end near the positioning slot (14). A triangular prism (18) is fixedly installed on the other end of the mounting post (15). Upper jaws (19) are fixedly installed on the three sides of the triangular prism (18). The mounting post (15) has three limiting holes (17) at the center of its outer periphery, which are respectively aligned with three positioning blocks (16). A bolt (8) is threaded through one side of the mounting base (7), and the front end of the bolt (8) is slidably inserted into a limiting hole (17).

3. A portable lightweight pipe wrench according to claim 2, characterized in that, The upper jaws (19) are fixedly connected to the side of the triangular prism (18) by screws, and the clamping surfaces of the three upper jaws (19) are fine tooth surface, medium tooth surface and coarse tooth surface, respectively.

4. A portable lightweight pipe wrench according to claim 1, characterized in that, The bottom end of the upper clamp body (4) is provided with a slot (12), and the bottom end of the upper clamp body (4) is locked to the outside of the top end of the clamp handle (1) through the slot (12). The pin (11) realizes the rotational connection between the upper clamp body (4) and the clamp handle (1) by passing through the upper clamp body (4) and the clamp handle (1). The top surface of the slot (12) is a slope (28), and the end of the slope (28) near the support base (3) is the lower end; A circular hole (26) is provided on the inclined surface (28) at the higher end. A spring (27) is installed in the circular hole (26). The top end of the spring (27) is fixedly connected to the top end of the circular hole (26), and the bottom end of the spring (27) is in contact with the top end of the pliers handle (1). In the initial state, the elastic force of the spring (27) makes the lower position of the inclined surface (28) contact the top surface of the pliers handle (1). At this time, the top surface of the pliers handle (1), the inclined surface (28) and the spring (27) form a triangular structure, and the upper pliers body (4) and the pliers handle (1) are in a parallel state.

5. A portable lightweight pipe wrench according to claim 1, characterized in that, The top of the support base (3) is provided with a docking groove (24), and a magnet (25) is fixedly installed at the bottom of the docking groove (24).

6. A portable lightweight pipe wrench according to claim 5, characterized in that, A plug (22) adapted to the docking groove (24) is fixedly installed at the center of the back side of the lower jaw (10). A magnet (23) opposite to the magnetic pole of the second magnet (25) is fixedly installed at the end of the plug (22) away from the lower jaw (10).

7. A portable lightweight pipe wrench according to claim 1, characterized in that, The inner wall of the rectangular slide (5) is provided with a mounting groove (20) for installing an adjusting ring (6), and both sides of the rectangular slide (5) are provided with through grooves (21) that communicate with the mounting groove (20). The adjusting ring (6) is rotatably mounted in the rectangular slide (5) through the mounting groove (20), the mounting groove (20) meshes with the adjusting tooth (2), and part of the periphery of the mounting groove (20) extends to the outside of the rectangular slide (5) through the through groove (21).

Images