Wire stripping tool

Abstract

The present invention relates to a stripping tool for armoured cable, the stripping tool comprising a first handle and a second handle, the first handle comprising a cutting portion, a pivoting portion and a gripping portion, the second handle comprising a clamping portion, a pivoting portion and a gripping portion, the first handle and the second handle being pivotally connected in an "X" shape at the pivoting portion of the first handle and the pivoting portion of the second handle, such that a user can grip the gripping portion of the first handle and the gripping portion of the second handle to pivot the second handle relative to the first handle, clamp the armoured cable between the cutting portion of the first handle and the clamping portion of the second handle, and cut the cable using the cutting portion of the first handle.

Description

Technical Field

[0001] This invention relates to wire stripping tools, and more particularly to wire stripping tools for stripping armored wound cables (MC / BX cables). Background Technology

[0002] This section provides background information relevant to this application, which does not necessarily constitute prior art.

[0003] Armored spiral cables are widely used in the construction and power industries. The outer protective shell of the cable is made of wound metal wire. This design provides excellent protection for the cable and allows for large-angle bending. These outer protective shells are typically made of wound aluminum wire, which is relatively rigid, making it difficult to remove the protective shell from the ends when using the cable.

[0004] Cutting the cable wrapping in protective casings using commonly used tools such as wire cutters and rotary cutters is time-consuming and laborious, and can easily sever the cable inside the casing and cause personal injury. In particular, wire cutters or rotary cutters may require enormous clamping force to cut, which can injure the wrist or fingers. Furthermore, the shape of existing wire cutters or other general-purpose cutting tools is not ergonomic and has unprotected blades, which may lead to hand or body injuries. Moreover, the complex structure of wire cutters or rotary cutters results in long cable installation times, and the cable can easily detach from the cutting area. In addition, the cutting depth is difficult to control with general-purpose tools, which can easily damage the insulation layer of the internal cable.

[0005] Furthermore, only a limited number of tools can accommodate large-diameter armored wound cables. Existing, very compact tool designs are unsuitable for cutting large armored wound cables. Many current cutting tools have a maximum outer diameter of only one inch. Summary of the Invention

[0006] The purpose of this invention is to solve one or more of the technical problems mentioned above.

[0007] In particular, the present invention aims to provide a labor-saving and easy-to-operate stripping tool for armored wound cables.

[0008] In particular, another object of the present invention is to provide a wire stripping tool applicable to cables of various diameters, including large-diameter cables.

[0009] In particular, the present invention also aims to provide a stripping tool for armored wound cables with consistent cutting force.

[0010] In particular, another object of the present invention is to provide a stripping tool that can adjust the cutting depth so as not to damage the internal cables.

[0011] In particular, another object of the present invention is to provide a wire stripping tool capable of adjusting the relative pivot position of the two handles of the wire stripping tool.

[0012] In particular, another object of the present invention is to provide a safe stripping tool for armored wound cables.

[0013] In particular, another object of the present invention is to provide a stripping tool capable of simultaneously cutting the internal cable of an armored cable and stripping the insulation layer of the cable.

[0014] According to one aspect of the present invention, a stripping tool for armored wound cables is provided. The stripping tool includes a first handle and a second handle. The first handle includes a cutting portion, a pivoting portion, and a gripping portion. The second handle includes a clamping portion, a pivoting portion, and a gripping portion. The first handle and the second handle are pivotally connected in an "X" shape at the pivoting portions of the first and second handles, allowing the user to grip the gripping portions of the first and second handles to pivot the second handle relative to the first handle, clamping the armored wound cable between the cutting portion of the first handle and the clamping portion of the second handle, and cutting the cable using the cutting portion of the first handle. This arrangement of the first and second handles reduces the clamping force required by the user when cutting the cable by utilizing the lever principle. It also facilitates the user's arm exertion in addition to wrist and finger force.

[0015] According to one aspect of the invention, a laterally extending "V"-shaped opening is formed in the clamping portion of the second handle of the wire stripping tool, facing the gripping portion of the second handle. This allows the cable to be secured, preventing it from deviating from the cutting position and avoiding cutting into the cable's interior.

[0016] According to one aspect of the invention, one or more ribs conforming to the shape of the cable and arranged side by side are provided in the "V"-shaped opening of the clamping part. This reduces cable clamping and cutting time, improves the efficiency of processing armored wound cables, and enhances safety.

[0017] According to one aspect of the invention, the cutting portion of the first handle of the wire stripping tool includes a drive mechanism for driving the cutting blade. The drive mechanism includes a camshaft, a first cam, a second cam, and a driver. One end of the camshaft is integrally or fixedly connected to the first cam, and the other end of the camshaft engages with the second cam. The first and second cams have the same profile and are arranged to rotate together in the same phase by the driver. This avoids camshaft skew, allows the drive mechanism to operate smoothly, and improves cutting performance.

[0018] According to one aspect of the present invention, a first cam groove corresponding to a first cam and a second cam groove corresponding to a second cam are respectively formed on both sides of the cutting part of the first handle. The first cam groove and the second cam groove are elongated grooves. During the rotation of the first cam and the second cam, a pair of sidewalls of the first cam groove and the second cam groove periodically abut against the cam surfaces of the first cam and the second cam, thereby pushing the first cam, the second cam and the cutting blade 35 connected to the first cam to reciprocate while rotating.

[0019] According to one aspect of the invention, the cutting portion of the first handle of the wire stripper is provided with a spring loading mechanism. The spring loading mechanism includes an adjusting spring and an adjusting screw disposed in a through hole in the cutting portion. The through hole is perpendicular to the camshaft, such that the adjusting spring is arranged such that one end abuts against the camshaft and applies a spring force in the direction toward the cable. The adjusting screw is screwed into the first end of the through hole and abuts against the other end of the adjusting spring. This allows the wire stripper to be adapted to users with different grip strengths, improving efficiency.

[0020] According to one aspect of the invention, the wire stripping tool further includes a cutting depth adjustment mechanism, which includes a stop nut screwed into the second end of the through hole. The stop nut abuts against the camshaft from the side opposite to the adjusting spring, limiting the range of movement of the camshaft in the vertical direction. The cutting depth of the cutting blade connected to the first cam can be changed by screwing the stop nut.

[0021] According to one aspect of the invention, the actuator includes a crank handle, one end of which is integrally or fixedly connected to a second cam, and the other end of the crank handle is provided with a rotating wheel. The rotating wheel includes a cup-shaped body and a cylindrical bushing, in which a rotating wheel shaft is housed. A rotating wheel fixing screw passes through the rotating wheel shaft, rotatably fixing the rotating wheel to the end of the crank handle. The rotating wheel body can store multiple spare cutting blades. This design makes the wire stripping tool compact, easy to carry, and easy to use.

[0022] According to one aspect of the invention, the drive includes a motor.

[0023] According to one aspect of the invention, a spring is provided between the gripping portion of the second handle and the gripping portion of the first handle of the wire stripping tool. This makes the wire stripping mechanism very labor-saving.

[0024] According to one aspect of the invention, a wire stripping tool includes a position switching mechanism. A pivot portion of a first handle and a pivot portion of a second handle are pivotally connected together via the position switching mechanism. The position switching mechanism includes a position switching hole formed at the pivot portion of the first handle, a position adjustment hole formed at the pivot portion of the second handle, and a handle pivot shaft passing through the position switching hole and the position adjustment hole, allowing the first handle and the second handle to be in two or more relative positions. This enables the wire stripping tool to adapt to different cables and environments, improving its applicability.

[0025] According to one aspect of the invention, the position switching hole of the position switching mechanism is formed in the shape of a dumbbell, the position adjustment hole is formed in the shape of an oblong or elliptical shape, the shaft portion of the handle pivot shaft has an oblong or elliptical cross section, and the threaded portion formed at the end of the handle pivot shaft engages with a fixing nut.

[0026] According to one aspect of the present invention, the position switching hole of the position switching mechanism is an elongated through hole, a plurality of arc-shaped position switching slots are provided on the inner side of the first handle, and an arc-shaped position adjustment protrusion is provided on the inner side of the second handle. The position adjustment protrusion can be inserted into any one of the plurality of position switching slots and slide.

[0027] According to one aspect of the invention, the position switching hole of the position switching mechanism located on the first handle is an elongated hole with internal teeth. The handle pivot shaft includes a cap and a shaft. The shaft includes a small diameter portion, an external tooth portion and a large diameter portion in sequence along the direction away from the cap. The external tooth portion meshes with the internal tooth. A pre-tensioned spring abuts against the cap of the handle pivot shaft between the first handle and the first handle. The large diameter portion of the handle pivot shaft is accommodated in the position adjustment hole of the second handle.

[0028] According to one aspect of the invention, a recess is formed on one side of the cutting portion, opening to one side and downward, for accommodating the camshaft, the first cam, and the cutting blade, such that after installation, the cutting edge of the cutting blade is exposed only at the lower cutting position, and the remaining directions are sealed by the sidewalls of the recess.

[0029] According to one aspect of the invention, a first stripping blade is provided on a first handle and a second stripping blade is provided on a second handle. When the first handle and the second handle are clamped together, the first stripping blade and the second stripping blade are capable of cutting the dearmored cable and stripping the insulation layer of the cable.

[0030] According to one aspect of the invention, the first and second wire stripping blades are rectangular, with a ramp formed on one side of each blade, and a plurality of semi-circular cutting edges that gradually increase in size from the ends of the blades are provided along their lengths. The blades are arranged such that the ramps of the first and second blades face each other, and the cutting edges of the blades are opposite each other, such that cutting edges of the same size are paired.

[0031] According to one aspect of the present invention, a screw hole in the shape of a complete or partial circle is provided on the opposite side of the first wire stripper blade and the second wire stripper blade, so as to fix the first wire stripper blade to the first handle and the second wire stripper blade to the second handle by means of screws.

[0032] According to one aspect of the invention, a first wire stripping blade is disposed on the cutting portion of the first handle, and a second wire stripping blade is disposed on the clamping portion of the second handle.

[0033] According to one aspect of the invention, the pivot portion of the first wire stripper blade relative to the first handle is disposed on the side away from the cutting portion, and the pivot portion of the second wire stripper blade relative to the second handle is disposed on the side away from the clamping portion. Attached Figure Description

[0034] The foregoing and other features and characteristics of this application will become clearer from the following detailed description with reference to the accompanying drawings, which are merely illustrative and not necessarily drawn to scale. The same reference numerals are used in the drawings to indicate the same parts, in which:

[0035] Figure 1 This is an exploded perspective view of a wire stripping tool according to an embodiment of the present invention;

[0036] Figure 2A This is a perspective view of the cable clamping state of the wire stripping tool according to an embodiment of the present invention;

[0037] Figure 2B A view of the head of the second handle of a wire stripping tool according to an embodiment of the present invention;

[0038] Figure 2C A view of the second handle of a wire stripping tool according to an embodiment of the present invention;

[0039] Figure 2D This is a partial cross-sectional view of a wire stripping tool according to an embodiment of the present invention, taken along the extension direction of the cable.

[0040] Figure 3 An exploded perspective view of the first handle of a wire stripping tool according to an embodiment of the present invention;

[0041] Figure 4 This is a partial cross-sectional view of the cutting portion of the first handle of the wire stripping tool according to an embodiment of the present invention;

[0042] Figure 5 This is a perspective view of a wire stripping tool according to an alternative embodiment of the present invention.

[0043] Figure 6A A perspective view of a position switching mechanism for a wire stripping tool according to an embodiment of the present invention is shown;

[0044] Figure 6B A perspective view of the handle pivot axis of the position switching mechanism of the wire stripping tool according to an embodiment of the present invention is shown;

[0045] Figure 7A A perspective view of a wire stripping tool according to an alternative embodiment of the present invention is shown;

[0046] Figure 7B This is a separate side view of the first handle of a wire stripping tool according to an alternative embodiment of the present invention;

[0047] Figure 7C This is a separate side view of the second handle of a wire stripping tool according to an alternative embodiment of the present invention;

[0048] Figure 8A This is a perspective view of a wire stripping tool according to another alternative embodiment of the present invention;

[0049] Figure 8B This is an exploded perspective view of a wire stripping tool according to another alternative embodiment of the present invention;

[0050] Figure 8C This is a perspective view of the handle pivot of a wire stripping tool according to another alternative embodiment of the present invention;

[0051] Figure 8D This is a partial cross-sectional view of the pivot portion of a wire stripping tool according to another alternative embodiment of the present invention.

[0052] Figure 9A This is an exploded perspective view of a wire stripping tool equipped with a wire stripping blade according to an embodiment of the present invention.

[0053] Figure 9B This is a perspective view of a wire stripping tool equipped with a wire stripping blade according to an embodiment of the present invention, performing wire stripping.

[0054] Figure 9C This is a front view of the wire stripping blade of a wire stripping tool provided with a wire stripping blade according to an embodiment of the present invention;

[0055] Figure 10AThis is an exploded perspective view of a wire stripping tool equipped with a wire stripping blade according to another embodiment of the present invention.

[0056] Figure 10B This is a perspective view of a wire stripping tool equipped with a wire stripping blade according to another embodiment of the present invention, performing wire stripping. Detailed Implementation

[0057] Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings. The following description is exemplary in nature and is not intended to limit the invention or its application or use.

[0058] Figure 1 This is an exploded perspective view of the wire stripping tool 1 according to an embodiment of the present invention. Figure 1 As shown, a stripping tool 1 for armored wound cables according to the present invention includes a first handle 10 and a second handle 20. The first handle 10 includes a cutting portion 12, a pivoting portion 14, and a gripping portion 16. The second handle 20 includes a clamping portion 22, a pivoting portion 24, and a gripping portion 26. The first handle 10 and the second handle 20 are pivotally connected at the pivoting portion 14 of the first handle 10 and the pivoting portion 24 of the second handle 20, so that the stripping tool 1 is generally "X" shaped. In use, the user holds the gripping portion 16 of the first handle 10 and the gripping portion 26 of the second handle 20, causing the second handle 20 to pivot relative to the first handle 10, clamping the armored wound cable between the cutting portion 12 of the first handle 10 and the clamping portion 22 of the second handle 20, and using the cutting portion 12 of the first handle 10 to cut the protective shell of the armored wound cable. The X-shaped arrangement of the first handle 10 and the second handle 20 allows the user to utilize leverage principles, cutting cables not only with the strength of the wrist and fingers but also with the strength of the arm, achieving a labor-saving effect. Furthermore, this arrangement of the first handle 10 and the second handle 20 simplifies the cable installation process compared to existing tools that require removing the handles to install cables; the wire stripping tool of the present invention only requires opening the handles to install the cable. The wire stripping tool 1 according to the present invention reduces cable clamping time, facilitates operation, and improves the efficiency of cutting armored wound cables.

[0059] like Figure 2A As shown, the cable C to be cut can be held between the cutting portion 12 of the first handle 10 and the clamping portion 22 between the second handle 20, thereby holding and cutting the cable C. Figure 1After holding the cable C between the cutting section 12 and the clamping section 22, the crank 60 drives the disc-shaped cutting blade 35 housed in the cutting section 10 of the first handle 10, causing the cutting blade 35 to rotate and reciprocate along the extension direction of the cable C as described later, thereby cutting the armor sheath of the cable C. The cutting blade 35 is housed in the cutting section 12 of the first handle 10 to prevent injury to the user's hands or body.

[0060] The features of the wire stripping tool are described in detail below with reference to the accompanying drawings.

[0061] 1. V-shaped cable clamp

[0062] Figures 2A to 2D The cable clamping state and corresponding features of a wire stripping tool according to an embodiment of the present invention are shown. Specifically, in Figure 2A and Figure 2B In the illustrated embodiment, a "V"-shaped opening 222 is formed in the clamping portion 22 of the second handle 20 of the wire stripping tool 1, facing the cutting portion 12 of the first handle 10. For example... Figure 2A As shown, when cable C is clamped in the stripping tool 1, cable C can be placed in the "V"-shaped opening 222 of the clamping part 22. Different outer diameters of cable C result in different depths to which cable C is placed in the "V"-shaped opening 222 of the clamping part 22, thereby enabling the stripping tool 1 to accommodate large armored wound cables, in particular. Furthermore, the opening 222 ensures that the stripping tool 1 stably clamps cable C so that the cutting blade is aligned with the cable core of cable C.

[0063] Preferably, such as Figure 1 and Figure 2C As shown, on the clamping surface of the V-shaped opening 222 of the clamping part 22 of the second handle 20 of the wire stripping tool 1, one or more ribs 224 that conform to the shape of the cable C and are arranged side by side are also formed.

[0064] like Figure 2D As shown, each rib 224 protrudes into a recessed portion of the wavy outer surface of the cable C, thereby helping to clamp the cable C in place and preventing the cable C from moving along the longitudinal axis of the cable C.

[0065] 2. Dual-cam design of the drive mechanism

[0066] Figure 3 A first handle 10 of a wire stripping tool according to an embodiment of the present invention is shown. For example... Figure 3As shown, the cutting section 12 of the first handle 10 of the wire stripping tool 1 includes a drive mechanism 50, which includes a camshaft 52, a first cam 54, a second cam 56, and a driver. The first cam 54 and the second cam 56 are located on both sides of the first handle 10. The camshaft 52 passes through an elongated mounting hole 128 located at the bottom of the cutting section 12. The size of the mounting hole 128 is larger than the diameter of the camshaft 52, allowing the camshaft 52 to translate within the mounting hole 128 and to move vertically. One end of the camshaft 52 is integrally formed with the first cam 54, or one end of the camshaft 52 is fixedly connected to the first cam 54, and the other end of the camshaft 52 engages with the second cam 56. The first cam 54 and the second cam 56 have the same profile and are arranged to rotate together in the same phase. The second cam 56 may be formed at one end of a crank handle 60, which acts as a driver to drive the second cam 56, the camshaft 52, the first cam 54, and the cutting blade 35 to rotate together. A flat portion 522 is formed at the other end of the camshaft 52. A flat hole 562 is formed in the second cam 56 to mate with the flat portion 522 of the camshaft 52, thereby enabling the first cam 54 and the second cam 56 to rotate together in the same phase. The cutting blade can be connected to the first cam 54 in various ways. Figure 1 In the illustrated embodiment, a threaded hole 542 is formed in the first cam 54 at a position corresponding to the rotation axis of the camshaft 52. A tool fixing screw 58 passes through the central hole 36 of the disc-shaped cutting blade 35 and is screwed into the threaded hole 542 of the first cam 54. This fixes the cutting blade 35 to the side of the first cam 54 opposite to the camshaft 52, allowing the cutting blade 35 to rotate with the camshaft 52. Figure 3 In another embodiment shown, a polygonal mounting protrusion 545 extends from the side of the first cam 54 along the axis of rotation. The mounting protrusion 545 engages with a mounting hole 62 of a corresponding shape at the center of the cutting blade 35 to achieve connection.

[0067] like Figure 3 As shown, a recess 127, open on one side and at the bottom, is formed in the first side of the cutting portion 12 of the first handle 10. This recess accommodates the camshaft 52, the first cam 54, and the cutting blade 35 connected to the first cam. This ensures that after installation, the cutting edge of the cutting blade 35 is only exposed at the lower cutting position, with the remaining directions sealed off by the side wall of the recess 127 to prevent accidental injury to the operator. A first cam groove 122 corresponding to the first cam 54 is formed on the inner wall of the recess 127. Accordingly, as... Figure 3 and Figure 4As shown in the cross-sectional view, an extension 125 and a mounting block 126 are extended from the second side of the cutting portion 12. A second cam groove 123 corresponding to the second cam 56 is formed on the outer surface of the mounting block 126. As shown, the first cam groove 122 and the second cam groove 123 are rectangular grooves of the same shape. The profiles of the first cam 54 and the second cam 56 are designed such that: during rotation, the first cam 54 abuts against a pair of opposing sidewalls 129 (long sides of the rectangular groove) perpendicular to the cable C in the circumferential inner wall of the first cam groove 122, without contacting the other pair of sidewalls 124 of the rectangular groove; similarly, during rotation, the second cam 56 abuts against a pair of opposing sidewalls (long sides of the rectangular groove) perpendicular to the cable C in the circumferential inner wall (not shown in the figure) of the second cam groove, without contacting the other pair of sidewalls of the rectangular groove. Therefore, when the first cam 54 and the second cam 56 rotate together in the same phase, they are intermittently pushed by the long sidewall of the rectangular slot. This causes the camshaft 52 to reciprocate along the extension direction of the cable C, thereby causing the cutting blade 35 to reciprocate along the extension direction of the cable C while rotating, thus cutting the armor sheath of the cable C. The reciprocating movement increases the cutting range, making the cutting more efficient.

[0068] In one embodiment, the first cam 54 and the second cam 56 are implemented as eccentric wheels, that is, the wheel body itself is circular, but the camshaft 52 is installed at an eccentric position on the wheel body.

[0069] Additionally, such as Figure 1 As shown, identical shims 57 can be provided between the inner wall of the first cam 54 and the first cam groove 122, and between the inner wall of the second cam 56 and the second cam groove. The shape of the shim 57 matches the circumferential inner wall 124 of the first cam groove 122 and the circumferential inner wall of the second cam groove. The shim 57 is provided with an elongated through hole 572 that matches the elongated mounting hole 128 at the bottom of the cutting part 12, through which the camshaft 52 passes. When the first cam 54 and the second cam 56 rotate, the camshaft 52 can reciprocate within the elongated through hole 572.

[0070] The dual-cam design of the present invention allows the first cam 54 and the second cam 56 to be driven by the circumferential inner wall 124 of the first cam groove 122 and the circumferential inner wall of the second cam groove, respectively, thereby making the force on the cam shaft 52 more uniform and balanced, reducing the skew of the cam shaft 52 during the cutting process, thereby reducing the jamming of the wire stripping tool 1 during cutting, and enabling the cutting to be carried out efficiently.

[0071] 3. Spring loading mechanism

[0072] Figure 4This is a partial cross-sectional view of the cutting portion of the first handle of a wire stripping tool according to an embodiment of the present invention. Figure 1 and Figure 4 As shown, a spring loading mechanism 70 is provided on the extension 125 of the cutting portion 12 of the first handle 10 of the wire stripping tool 1. The spring loading mechanism 70 includes an adjusting spring 72 and an adjusting screw 74. The adjusting spring 72 is arranged in a through hole 75 perpendicular to the camshaft 52 and applies spring force toward the cable C by abutting the camshaft 52 at its second end. Both ends of the through hole 75 are threaded. The adjusting screw 74 is screwed into the upper end of the through hole and abuts the first end of the adjusting spring 72 to change the position of the adjusting spring 72 in the through hole 75. As shown, the camshaft 52 passes through and is supported by the cutting portion 12 of the first handle 10 of the wire stripping tool 1. The cutting blade 35 extends out of the cutting portion 12 of the first handle 10 by a cutting depth D. When the cable C is clamped between the cutting portion 12 of the first handle 10 and the clamping portion 22 of the second handle 20, the cable C is clamped between the cutting blade 35 and the previously described "V"-shaped opening 222 of the clamping portion 22 of the second handle 20. Simultaneously, the cable C overcomes the elastic force of the adjusting spring 72 and exerts a reaction force on the cutting blade 35, forcing the cutting blade 35 to retract a certain distance or completely retract into the cutting section 12. As the cutting progresses, the cutting blade 35, due to the spring force, gradually extends into the cable until it reaches the maximum cutting depth D.

[0073] Because of the adjustable spring 72, the cutting force applied by the cutting blade 35 of the wire stripper 1 on the cable C remains the same, i.e., it is maintained at the spring force of the adjustable spring 72, even if the user applies different gripping forces. The spring force of the adjustable spring 72 can be changed by turning the adjusting nut 74. Turning the adjusting nut 74 downwards compresses the adjusting spring 72, increasing the spring force; conversely, turning the adjusting nut upwards relaxes the adjusting spring 72, decreasing the spring force. The adjusting nut 74 can be turned appropriately according to the wear of the cutting blade 35 to maintain a constant spring force. Therefore, regardless of the user's grip strength, the wire stripper 1 can provide a generally consistent cutting force, thereby improving cutting performance.

[0074] 4. Cutting depth adjustment mechanism

[0075] Still refer to Figure 4A stop nut 77 is provided at the other end of the through hole 75, serving as a cutting depth adjustment mechanism. The end of the stop nut 77 abuts against the camshaft 52 from the side opposite to the adjusting spring 72, thereby limiting the maximum vertical movement of the camshaft 52, i.e., the cutting depth D. When the stop nut 77 is turned, the cutting depth D can be changed, that is, the cutting depth of the cutting part 12 can be adjusted by the stop nut 77, ensuring that the cutting blade 35 can cut various types of cables without damaging the internal wires of the cable C.

[0076] 5. Driver

[0077] return Figure 1 As described above, in one embodiment, the actuator includes a crank handle 60. One end of the crank handle 60 is integrally or fixedly connected to the second cam 56. The other end of the crank handle 60 is provided with a wheel 80, which includes a cup-shaped body 82 and a cylindrical bushing 84. A wheel shaft 86 is housed in the bushing 84 of the wheel 80. A wheel fixing screw 89 is connected to one end of the wheel shaft 86, fixing the wheel 80 rotatably to the end of the crank handle 60. Thus, the user drives the crank handle 60 to rotate around and together with the cam shaft 52 by holding the wheel 80, driving the cutting blade 35 to rotate and translate simultaneously. The body 82 of the wheel 80 can store multiple spare cutting blades 35, which are held together by screws 88 at the other end of the wheel shaft 86.

[0078] In one embodiment, up to five spare tools can be stored in the rotary wheel 80.

[0079] Figure 5 This is a perspective view of a wire stripping tool according to an alternative embodiment of the present invention. Figure 5 As shown, instead of the crank handle 60, the driver may include a motor 90 to electrically drive the cutting blade 35. The motor 90 can be switched on and off and its speed can be controlled by a specific button.

[0080] 6. Position switching mechanism

[0081] Figures 6A to 8D Several embodiments of a position switching mechanism for a wire stripping tool according to an embodiment of the present invention are shown. For example... Figure 6A As shown, the wire stripping tool 1 includes a position switching mechanism 40, used to switch the hinge position between the first handle 10 and the second handle 20, thereby changing the distance between the cutting part and the clamping part of the wire stripping tool 1, suitable for cables of different sizes. Figure 1As shown, the position switching mechanism 40 includes a position switching hole 42 formed at the pivot portion 14 of the first handle 10, a position adjustment hole 44 formed at the pivot portion 24 of the second handle 20, a handle pivot shaft 45, and a fixing nut 48, so that the first handle 10 and the second handle 20 can be in two or more relative positions, thereby enabling the wire stripping tool 1 to adapt to cables C of different diameters.

[0082] The position switching hole 42 is closer to the cutting part 12 of the first handle 10, and the position adjustment hole 44 is closer to the clamping part 22 of the second handle 20, which is beneficial to the leverage effect of the wire stripping tool 1. The handle pivot 45 passes through the position switching hole 42 and the position adjustment hole 44.

[0083] like Figure 6A and Figure 6B As shown, the handle pivot 45 includes a cap 46, a shaft 47, and a threaded portion 49. The cap 46 is located at one end of the shaft 47 of the handle pivot 45 and, for example, abuts against the outside of the first handle 10. The threaded portion 49 is located at the other end of the shaft 47 of the handle pivot 45 and, for example, can at least partially extend to the outside of the second handle 20. The threaded portion 49 of the handle pivot 45 can engage with a retaining nut 48 to fasten the first handle 10 and the second handle 20 together and enable them to pivot relative to each other.

[0084] return Figure 1 The position adjustment hole 44 of the second handle 20 is an oblong or elliptical through hole. The position switching hole 42 of the first handle 10 is a dumbbell-shaped through hole. The shaft portion 47 of the handle pivot 45 has an oblong or elliptical cross-section. Thus, by rotating the handle pivot 45, the shaft portion 47 can pass through the waist of the position switching hole 42 with a narrower cross-section and move within the position switching hole 42. Once the handle pivot 45 is in place, rotating the handle pivot 45 can restrict the movement of the shaft portion 47 through the position switching hole 42.

[0085] Those skilled in the art will understand that the two handles can be positioned in two or more relative positions in a variety of ways.

[0086] As an alternative implementation method, such as Figures 7A-7C As shown, the position switching hole 42 of the first handle 10 is an elongated through hole. Furthermore, multiple arc-shaped position switching slots 41 are provided on the inner side of the first handle 10. As shown in the figure, three arc-shaped position switching slots 41 are provided on the inner side of the first handle 10. Figure 7CAs shown, an arc-shaped position adjustment protrusion 43 is provided on the inner side of the second handle 20. When it is necessary to adjust the relative position of the first handle 10 and the second handle 20, the shaft portion 47 of the handle pivot shaft 45 is moved within the position switching hole 42 of the first handle 10. Subsequently, the position adjustment protrusion 43 of the second handle 20 is inserted into one of the multiple position switching slots 41 of the first handle 10. The arc-shaped position adjustment protrusion 43 can slide in the mating position switching slot 41, thereby allowing the second handle 20 to pivot relative to the first handle 10, but not to translate relative to the first handle 10.

[0087] As another alternative implementation method, such as Figures 8A-8D As shown, the pivot portion 24 of the second handle 20 is hollow. The pivot portion 14 of the first handle 10 passes through the hollow pivot portion 24 of the second handle 20. Figure 8B As shown, the position switching hole 42 of the first handle 10 is an elongated hole with internal teeth 421. Figure 8C As shown, the handle pivot 45 includes a cap 46 and a shaft 47. The shaft 47, along a direction away from the cap 46, sequentially includes a small-diameter portion 472, an external tooth portion 474, and a large-diameter portion 476. The external tooth portion 474 includes a plurality of external teeth 478 formed on both sides of the handle pivot 45 relative to its longitudinal axis. The planes on both sides of the external teeth 478 are parallel to each other. The large-diameter portion 476 protrudes radially beyond the external tooth portion 474.

[0088] like Figure 8DAs shown, after assembly, the handle pivot 45 passes through the position switching hole 42 of the first handle 10 and the position adjustment hole 44 of the second handle 20. The pre-tension spring 451 abuts against the cap 46 of the handle pivot 45 and against the first handle 10, thereby applying tension between the cap 46 of the handle pivot 45 and the first handle 10, so that the large diameter portion 476 of the handle pivot 45 abuts against the side of the first handle 10 opposite to the pre-tension spring 451. At this time, the outer teeth 478 of the outer teeth 474 of the handle pivot 45 can mesh with the inner teeth 421 of the position switching hole 42 of the first handle 10, and the large diameter portion 476 of the handle pivot 45 is accommodated in the position adjustment hole 44 of the second handle 20. At this time, the first handle 10 and the handle pivot 45 are fixedly connected, and the second handle 20 can pivot relative to the first handle 10 about the handle pivot 45. When the position of the handle pivot 45 needs to be adjusted, the user presses down on the cap 46 of the handle pivot 45 along its longitudinal axis. The large-diameter portion 476 of the handle pivot 45 slides outward in the position adjustment hole 44 of the second handle 20, guiding the small-diameter portion 472 of the handle pivot 45 to the original position of the outer tooth portion 474. This causes the outer teeth 478 of the outer tooth portion 474 of the handle pivot 45 to no longer mesh with the inner teeth 421 of the position switching hole 42 of the first handle 10. Thus, the second handle 20, together with the handle pivot 45, can be translated relative to the first handle 10, thereby adjusting their relative positions. When the adjustment is in place, the user releases the handle pivot 45. Under the restoring force of the pre-tensioned spring 451, the large diameter portion 476 of the handle pivot 45 slides inward in the position adjustment hole 44 of the second handle 20, guiding the outer teeth 478 of the outer tooth portion 474 of the handle pivot 45 back to the position where they mesh with the inner teeth 421 of the position switching hole 42 of the first handle 10, thereby pivotally connecting the first handle 10 and the second handle 20 in the new position.

[0089] 7. Grip Design

[0090] In various embodiments, such as Figure 1 , Figure 6A and Figure 8A As shown, a spring can be provided between the gripping part 26 of the second handle 20 of the wire stripping tool 1 and the gripping part 16 of the first handle 10 to automatically open the handle after clamping.

[0091] In the embodiments shown, the spring is a leaf spring 30. However, those skilled in the art will understand that the spring can also take other forms, such as a coil spring, as long as it allows the two handles to open.

[0092] In addition, the shape of the handle's grip is designed according to ergonomic principles to facilitate gripping and exerting force.

[0093] 8. Wire stripper blade

[0094] Typically, the outer protective shell of an armored cable contains multiple strands of cable with plastic insulation. In practice, after cutting open the protective shell with the tool of this invention, it is often necessary to cut the internal cables and remove the insulation to make electrical connections. This invention... Figures 9A-10B In the illustrated embodiment, a wire stripping tool is provided for cutting the internal cable of an armored cable and stripping the insulation layer of the cable. (See also...) Figure 9A and Figure 9B A first stripping blade 100 is provided on the cutting part 12, particularly on the side near the crank handle 60, and a second stripping blade 200 is provided on the clamping part 22, particularly on the side near the crank handle 60. When the first handle 10 and the second handle 20 are clamped, the first stripping blade 100 and the second stripping blade 200 can cooperate to cut the cable and strip its insulation layer.

[0095] like Figure 9B As shown, the unarmored cable extends into the space between the first stripper blade 100 and the second stripper blade 200 in a direction transverse to the armored cable winding C for cutting and / or stripping.

[0096] like Figure 9C As shown, the first wire stripper blade 100 and the second wire stripper blade 200 are rectangular. Sloping surfaces 102 and 202 are formed on one side of each blade as a cutting area. Multiple semi-circular cutting blades 104 and 204, gradually increasing in size from the ends of each blade, are provided along the length of each blade to serve as the stripping area. The gradually increasing size of the cutting blades 104 and 204 allows the first wire stripper blade 100 and the second wire stripper blade 200 to accommodate cables of various diameters. Preferably, fully or partially circular screw holes 106 and 206 are provided on opposite sides of the first wire stripper blade 100 and the second wire stripper blade 200 to secure the first wire stripper blade 100 to the first handle 10 and the second wire stripper blade 200 to the second handle 20 using screws. Preferably, the first wire stripper blade 100 and the second wire stripper blade 200 are provided with two screw holes 106 and 206, respectively. Those skilled in the art will envision that one or more screw holes may be provided. Those skilled in the art will also envision that the first wire stripper blade 100 can be fixed to the first handle 10 and the second wire stripper blade 200 can be fixed to the second handle 20 by other means such as bonding, welding, or form-fitting fixation.

[0097] Refer again Figure 9A , Figure 9BThe first wire stripper blade 100 and the second wire stripper blade 200 are arranged such that the ramp surface 102 of the first wire stripper blade 100 and the ramp surface 202 of the second wire stripper blade 200 face each other, and the cutting edge 104 of the first wire stripper blade 100 and the cutting edge 204 of the second wire stripper blade 200 face each other, so that the cutting edges 104 and 204 of the same size are paired.

[0098] By setting the first wire stripper blade 100 and the second wire stripper blade 200, the uses of the wire stripping tool 1 can be increased, the number of tools that need to be carried can be reduced, and the work on site can be made more convenient.

[0099] Alternatively or additionally, such as Figure 10A As shown, the pivot portion 14 of the first stripping blade 100 relative to the first handle 10 is located on the side away from the cutting portion 12, and the pivot portion 24 of the second stripping blade 200 relative to the second handle 20 is located on the side away from the clamping portion 22. The first stripping blade 100 and the second stripping blade 200 are arranged such that the ramp surface 102 of the first stripping blade 100 and the ramp surface 202 of the second stripping blade 200 face each other, and the cutting edge 104 of the first stripping blade 100 and the cutting edge 204 of the second stripping blade 200 face each other, so that the cutting edges 104 and 204 of the same size are paired.

[0100] like Figure 10B As shown, the unarmored cable extends transversely to the first handle 10 and the second handle 20 between the first stripping blade 100 and the second stripping blade 200 for cutting and / or stripping. Since the first stripping blade 100 is located near the pivot 14 of the first handle 10 and the second stripping blade 200 is located near the pivot 24 of the second handle 20, the force used when cutting the cable and stripping its insulation can be reduced.

[0101] It should be understood that various different implementation methods can be designed by combining or modifying different implementation methods and various technical features in different ways.

[0102] The wire stripping tool according to a preferred embodiment of the present invention has been described above with reference to specific embodiments. It is understood that the above description is merely exemplary and not restrictive, and various modifications and variations can be conceived by those skilled in the art with reference to the above description without departing from the scope of the invention. These modifications and variations are also included within the scope of protection of this application.

Claims

1. A stripping tool (1) for armored wound cables, characterized in that, The wire stripping tool (1) includes a first handle (10) and a second handle (20). The first handle (10) includes a cutting part (12), a pivoting part (14), and a gripping part (16). The second handle (20) includes a clamping part (22), a pivoting part (24), and a gripping part (26). The first handle (10) and the second handle (20) are connected in an "X" shape at the pivoting part (14) of the first handle (10) and the pivoting part (24) of the second handle (20). The adapter allows the user to pivot the second handle (20) relative to the first handle (10) by holding the grip portion (16) of the first handle (10) and the grip portion (26) of the second handle (20), clamping the armored wound cable between the cutting portion (12) of the first handle (10) and the clamping portion (22) of the second handle (20), and cutting the cable (C) using the cutting portion (12) of the first handle (10). The cutting part (12) of the first handle (10) of the wire stripping tool (1) includes a drive mechanism (50) for driving the cutting blade (35). The drive mechanism (50) includes a camshaft (52), a first cam (54), a second cam (56), and a driver. One end of the camshaft (52) is integrally or fixedly connected to the first cam (54), and the other end of the camshaft (52) cooperates with the second cam (56). The first cam (54) and the second cam (56) have the same profile, and the first cam (54) and the second cam (56) are arranged to rotate together in the same phase driven by the driver. Among them, a first cam groove (122) corresponding to the first cam (54) and a second cam groove (123) corresponding to the second cam (56) are respectively formed on both sides of the cutting part (12) of the first handle (10). The first cam groove (122) and the second cam groove (123) are elongated grooves. During the rotation of the first cam (54) and the second cam (56), a pair of sidewalls of the first cam groove (122) and the second cam groove (123) periodically abut against the cam surfaces of the first cam (54) and the second cam (56), thereby pushing the first cam (54), the second cam (56) and the cutting blade (35) connected to the first cam (54) to reciprocate while rotating.

2. The wire stripping tool (1) according to claim 1, characterized in that, A laterally extending "V"-shaped opening (222) is formed in the clamping portion (22) of the second handle (20) of the wire stripping tool (1) towards the gripping portion (26) of the second handle (20).

3. The wire stripping tool (1) according to claim 2, characterized in that, One or more ribs (224) that conform to the shape of the cable (C) and are arranged side by side are provided in the "V"-shaped opening (222) of the clamping part (22).

4. The wire stripping tool (1) according to claim 1, characterized in that, The first handle (10) of the wire stripping tool (1) has a cutting part (12) provided with a spring loading mechanism (70). The spring loading mechanism (70) includes an adjusting spring (72) and an adjusting screw (74) disposed in a through hole (75) of the cutting part (12). The through hole (75) is perpendicular to the camshaft (52), such that the adjusting spring (72) is arranged such that one end abuts against the camshaft (52) and applies a spring force in the direction toward the cable (C). The adjusting screw (74) is screwed into the first end of the through hole (75) and abuts against the other end of the adjusting spring (72).

5. The wire stripping tool (1) according to claim 4, characterized in that, The wire stripping tool (1) also includes a cutting depth adjustment mechanism, which includes a stop nut (77) screwed into the second end of the through hole (75). The stop nut (77) abuts against the camshaft (52) from the side opposite to the adjusting spring (72), limiting the range of movement of the camshaft (52) in the up and down direction. By screwing the stop nut (77), the cutting depth (D) of the cutting blade (35) connected to the first cam (54) can be changed.

6. The wire stripping tool (1) according to claim 1, characterized in that, The driver includes a crank (60), one end of which is integrally or fixedly connected to the second cam (56), and the other end of the crank (60) is provided with a wheel (80), the wheel (80) including a bowl-shaped body (82) and a cylindrical bushing (84), a wheel shaft (86) is accommodated in the bushing (84) of the wheel (80), and a wheel fixing screw (89) passes through the wheel shaft (86) to fix the wheel (80) in a rotatable manner at the end of the crank (60), and the body (82) of the wheel (80) can store a plurality of spare cutting blades (35).

7. The wire stripping tool (1) according to claim 1, characterized in that, The drive includes a motor (90).

8. The wire stripping tool (1) according to claim 1, characterized in that, A spring is provided between the gripping part (26) of the second handle (20) of the wire stripping tool (1) and the gripping part (16) of the first handle (10).

9. The wire stripping tool (1) according to claim 1, characterized in that, The wire stripping tool (1) includes a position switching mechanism (40), wherein the pivot portion (14) of the first handle (10) and the pivot portion (24) of the second handle (20) are pivotally connected together by the position switching mechanism (40). The position switching mechanism includes a position switching hole (42) formed at the pivot portion (14) of the first handle (10), a position adjustment hole (44) formed at the pivot portion (24) of the second handle (20), and a handle pivot shaft (45) passing through the position switching hole (42) and the position adjustment hole (44), such that the first handle (10) and the second handle (20) can be in two or more relative positions.

10. The wire stripping tool (1) according to claim 9, characterized in that, The position switching hole (42) of the position switching mechanism (40) is formed in the shape of a dumbbell, the position adjustment hole is formed in the shape of an elongated oval or an ellipse, the shaft part (47) of the handle pivot shaft has an elongated oval or an ellipse cross section, and the threaded part (49) formed at the end of the handle pivot shaft (45) cooperates with the fixing nut (48).

11. The wire stripping tool (1) according to claim 9, characterized in that, The position switching hole (42) of the position switching mechanism (40) is an elongated through hole. Multiple arc-shaped position switching slots (41) are provided on the inner side of the first handle (10), and an arc-shaped position adjustment protrusion (43) is provided on the inner side of the second handle (20). The position adjustment protrusion (43) can be embedded in any of the multiple position switching slots and slide.

12. The wire stripping tool (1) according to claim 9, characterized in that, The position switching mechanism (40) has a position switching hole (42) on the first handle (10) that is an elongated hole with internal teeth (421). The handle pivot shaft (45) includes a cap (46) and a shaft (47). The shaft (47) includes a small diameter portion (472), an external tooth portion (474), and a large diameter portion (476) in sequence along the direction away from the cap (46). The external tooth portion (474) meshes with the internal tooth (421). The pre-tensioned spring (451) abuts against the cap (46) of the handle pivot shaft (45) between the first handle (10). The large diameter portion (476) of the handle pivot shaft (45) is housed in the position adjustment hole (44) of the second handle (20).

13. The wire stripping tool (1) according to claim 1, characterized in that, A recess (127) is formed on one side of the cutting part (12), which is open to the side and the bottom, for accommodating the camshaft (52), the first cam (54) and the cutting blade (35), so that after installation, the cutting edge of the cutting blade (35) is exposed only at the bottom cutting position, and the other directions are sealed by the side wall of the recess (127).

14. The wire stripping tool (1) according to claim 1, characterized in that, A first stripping blade (100) is provided on the first handle (10), and a second stripping blade (200) is provided on the second handle (20). When the first handle (10) and the second handle (20) are clamped together, the first stripping blade (100) and the second stripping blade (200) can cut the unarmored cable and strip the insulation layer of the cable.

15. The wire stripping tool (1) according to claim 14, characterized in that, The first wire stripper (100) and the second wire stripper (200) are rectangular, with a ramp surface (102, 202) formed on one side of each. Multiple semi-circular cutting edges (104, 204) are provided along the length of each wire stripper, gradually increasing in size from the ends of each edge. The first wire stripper (100) and the second wire stripper (200) are arranged such that the ramp surface (102) of the first wire stripper (100) and the ramp surface (202) of the second wire stripper (200) face each other, and the cutting edges (104) of the first wire stripper (100) and the cutting edges (204) of the second wire stripper (200) are opposite each other, such that cutting edges (104, 204) of the same size are paired.

16. The wire stripping tool (1) according to claim 15, characterized in that, On the opposite sides of the first wire stripper (100) and the second wire stripper (200), there are screw holes (106, 206) that are either fully or partially circular, so as to fix the first wire stripper (100) to the first handle (10) and the second wire stripper (200) to the second handle (20) using screws.

17. The wire stripping tool (1) according to claim 14, characterized in that, The first wire stripper (100) is disposed on the cutting part (12) of the first handle (10), and the second wire stripper (200) is disposed on the clamping part (22) of the second handle (20).

18. The wire stripping tool (1) according to claim 14, characterized in that, The first wire stripper (100) is disposed on the side away from the cutting part (12) relative to the pivot part (14) of the first handle (10), and the second wire stripper (200) is disposed on the side away from the clamping part (22) relative to the pivot part (24) of the second handle (20).

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