Wire covering layer stripping tool

Abstract

To provide a wire covering layer stripping tool capable of accommodating wires of different various thicknesses in order to stably strip a covering layer.SOLUTION: A wire covering layer stripping tool 700 includes a stripper main body part 600, and a wire guiding part 100 detachably fixed to the stripper main body part 600. The wire guiding part 100 is formed of a pair of guiding split pieces 110 and 120, and has a guiding hole 130 through which a wire W can be inserted. With the wire guiding part 100 being attached to the stripper main body part 600, the guiding hole 130 is aligned linearly with a wire insertion hole 630 of the stripper main body part 600.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a wire coating layer scraper for scraping off the coating layer of a low-voltage wire or the like. [Background technology]

[0002] Conventionally, workers would insert an electric wire into the wire insertion hole of the electric wire insulation layer scraper and rotate the electric wire insulation layer scraper in that state to scrape off the insulation layer of the electric wire with the cutting blade built into the electric wire insulation layer scraper. However, because the diameter of the electric wire varies depending on the type of electric wire, the inserted electric wire's position and posture inside the electric wire insertion hole was unstable, making it difficult to scrape off the insulation layer properly. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, in view of the above problems, the present invention provides a wire coating layer scraper that can be used to scrape off coating layers from wires of various diameters in a stable manner. [Means for solving the problem]

[0004] In order to solve the above problems, the wire coating layer scraper of the present invention is a wire coating layer scraper comprising a scraper main body and a wire guide part that is detachably fixed to the scraper main body, wherein the wire guide part is composed of a pair of guide part segments and has a guide hole formed therein through which an electric wire can be inserted, and when the wire guide part is attached to the scraper main body, the guide hole is aligned in a straight line with the electric wire insertion hole of the scraper main body.

[0005] According to the above features, the wire guide part is detachable from the scraper body, so it can be easily replaced with a wire guide part that corresponds to a wire of a different diameter, allowing for stable scraping of the insulation. In addition, the guide part segments of the wire guide part can be rotated to open, so that not only the tip but also the middle part of the insulation of the wire can be scraped off.

[0006] Furthermore, in order to solve the above problem, the wire coating layer scraper of the present invention is characterized in that the guide portion segment is fixed so as not to rotate relative to the scraper main body by a pin provided between it and the scraper main body.

[0007] According to the above feature, the wire guide portion can be fixed so as not to rotate relative to the scraper body portion.

[0008] In order to solve the above problem, the wire coating layer scraper of the present invention is characterized in that the pin comprises a movable pin and a fixed pin, the movable pin is configured to be movable when the wire guide part is attached to the scraper main body part, the fixed pin is arranged on one of the guide part segments located on the scraper blade side of the scraper main body part, and the movable pin is arranged on the other guide part segment side.

[0009] According to the above feature, the fixed pin receives the reaction force when scraping off the insulation of the electric wire, so the electric wire guide part can be maintained in a firmly fixed state so as not to rotate relative to the scraper main body. On the other hand, since the movable pin is disposed on the other guide part segment side, it does not receive the reaction force from the scraping blade, so the movable pin does not move, and it is possible to prevent the electric wire guide part from accidentally coming off the scraper main body when scraping off the insulation of the electric wire.

[0010] In order to solve the above problem, the wire coating layer scraper of the present invention is characterized in that the mounting hole has an insertion hole into which the movable pin is inserted to attach the wire guiding portion to the scraper main body portion, and an engagement hole that engages with the movable pin to fix the wire guiding portion to the scraper main body portion.

[0011] According to the above feature, the wire guide portion can be easily attached to and detached from the scraper body portion by simply moving the movable pin between the insertion hole and the engagement hole.

[0012] In order to solve the above problems, the wire coating layer scraper of the present invention is characterized in that the pair of guide portion segments are rotatably connected to each other.

[0013] According to the above feature, the guide portion divided pieces can be easily opened and closed, which is convenient when scraping off the coating of the middle portion. [Effects of the Invention]

[0014] The wire coating layer scraper of the present invention can be used to scrape off the coating layer stably and is therefore compatible with wires of various diameters. [Brief explanation of the drawings]

[0015] [Figure 1] 1A is an overall perspective view of a scraper body of the present invention, and FIG. 1B is a front view of the scraper body. [Figure 2] FIG. [Figure 3] 1A is an overall perspective view of the electric wire guide portion, FIG. 1B is a right side view of the electric wire guide portion, and FIG. 1C is a left side view of the electric wire guide portion. [Figure 4] FIG. 2(a) is a front view of the electric wire guide portion, and FIG. 2(b) is a development view of the electric wire guide portion. [Figure 5] 1A is a perspective view of a wire coating layer scraper, FIG. 1B is a front view of the wire coating layer scraper, and FIG. 1C is a front view of the wire coating layer scraper. [Figure 6] FIG. 2( a ) is a perspective view of the wire coating layer scraper, and FIG. 2( b ) is a front view of the wire coating layer scraper. [Figure 7] 1A is an overall perspective view of the electric wire guide portion, and FIG. 1B is a front view of the electric wire coating layer scraper with the electric wire guide portion attached to the scraper main body portion. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the shapes of the drawings referred to in the following description are conceptual or schematic diagrams for explaining preferred shapes and dimensions, and the dimensional ratios do not necessarily correspond to the actual dimensional ratios. In other words, the present invention is not limited to the dimensional ratios in the drawings.

[0017] First, Figures 1 and 2 show a scraper body 600 of the present invention. Figure 1(a) is an overall perspective view of the scraper body 600, Figure 1(b) is a front view of the scraper body 600, and Figure 2 is an exploded view of the scraper body 600.

[0018] The scraper main body 600 has a cylindrical shape with a central electric wire insertion hole 630 through which an electric wire is inserted, and is entirely made of synthetic resin or the like. The electric wire insertion hole 630 extends linearly along the longitudinal direction of the scraper main body 600. The scraper main body 600 is made up of two main body halves (610, 620) and is configured to be openable and closable by a hinge 601. The two main body halves (610, 620) are also provided with a connecting and fixing part 602 such as a snap lock that fixes the two main body halves (610, 620) together so that they can be firmly maintained in a closed state.

[0019] Further, a through hole 631 is provided in the electric wire insertion hole 630, penetrating the main body divided piece from the inside to the outside. A scraping blade 609 is attached at a position adjacent to the through hole 631, and a tip 608 of the scraping blade 609 protrudes into the inner surface of the electric wire insertion hole 630. Therefore, when the scraper main body 600 is rotated with an electric wire inserted into the electric wire insertion hole 630, the tip 608 of the scraping blade 609 scrapes off the coating layer of the electric wire, and the scraped coating layer is discharged to the outside through the through hole 631.

[0020] Furthermore, scraper main body 600 is provided with linear scale 632 extending along the longitudinal direction of electric wire insertion hole 630. Scale 632 enables the worker to check how much of the wire covering has been stripped off.

[0021] The end face on the tip side of scraper main body 600 serves as mounting portion 640 to which wire guide portion 100, which will be described later, is attached. Mounting portion 640 is composed of a flat mounting surface 611 at the tip of one main body divided piece 610 and a flat mounting surface 621 at the tip of the other main body divided piece 620. One mounting surface 611 is recessed inward more than the other mounting surface 621, so that a step wall 622 rising at a right angle from mounting surface 611 is provided between mounting surface 611 and mounting surface 621.

[0022] A fixed pin 650 that protrudes outward is provided on the mounting surface 621 of the mounting portion 640. This fixed pin 650 is disposed on the main body segment 620 on the side where the scraping blade 609 is provided. A movable pin 660 that protrudes outward is provided on the mounting surface 611 of the mounting portion 640. This movable pin 660 has a shaft 611 and, at the upper end of the shaft 611, a head 662 that is larger than the shaft 611. Furthermore, at the lower end of the shaft 611, an operating portion 663 is provided that is fixed to intersect with the shaft 611. The operating portion 663 protrudes laterally from the side surface of the main body segment 610. When the operating portion 663 is pressed in from the outside, the movable pin 660 moves inward (see the arrow in FIG. 1(b)) as shown in FIG. 1(b), and the wire guide unit 100 can be attached as described below. Furthermore, a biasing member 664 such as a spring is built into the inside of the mounting surface 611 on the opposite side of the operating portion 663. Therefore, the movable pin 660 pushed inward is automatically pushed outward by the biasing force of the biasing member 664 and returns to its original position.

[0023] Next, Fig. 3 and Fig. 4 show the electric wire guiding part 100 of the present invention. Fig. 3(a) is an overall perspective view of the electric wire guiding part 100, Fig. 3(b) is a right side view of the electric wire guiding part 100, Fig. 3(c) is a left side view of the electric wire guiding part 100, Fig. 4(a) is a front view of the electric wire guiding part 100, and Fig. 4(b) is a development view of the electric wire guiding part 100.

[0024] The electric wire guiding part 100 has a cylindrical shape with a guide hole 130 in the center through which the electric wire is passed, and is entirely made of synthetic resin or the like. The guide hole 130 extends linearly along the longitudinal direction of the electric wire guiding part 100. The electric wire guiding part 100 is made up of two guide part segments (110, 120) and is configured to be openable and closable by a hinge 101.

[0025] The guide portion segment 110 includes a semicircular base 111 and an insertion portion 112 extending linearly from the rear surface of the base 111. The insertion portion 112 is configured to be insertable into the wire insertion hole 630 of the scraper main body 600. The base 111 is also provided with a mounting hole 113 penetrating from the front to the rear surface. The mounting hole 113 further includes an insertion hole 114 large enough to allow the head 662 of the movable pin 660 to pass therethrough, and an engagement hole 115 that is smaller than the head 662 of the movable pin 660 and large enough to allow the shaft 611 to pass therethrough. As will be described later, the head 662 of the movable pin 660 inserted into the insertion hole 114 of the mounting hole 113 moves from the insertion hole 114 to the engagement hole 115 and engages with the periphery of the engagement hole 115. The base 111 has a thickness greater than that of a base 121 of a guide divided piece 120 (described later), and includes an abutting portion 119 that can abut against a step wall 622 of the scraper main body 600 .

[0026] Further, the guide portion segment 120 includes a semicircular base 121 and an insertion portion 122 extending linearly from the back side of the base 121. This insertion portion 122 is configured so that it can be inserted into the electric wire insertion hole 630 of the scraper main body 600. The base 121 is also provided with an attachment hole 123 that penetrates from the front side to the back side. A fixing pin 650 of the scraper main body 600 can be inserted into this attachment hole 123. A notch 125 is formed in a portion of the distal end side of the insertion portion 122. When the insertion portion 122 is inserted into the electric wire insertion hole 630 of the scraper main body 600, the tip 608 of the scraping blade 609 can come into contact with the electric wire inserted into the guide hole 130 via the notch 125.

[0027] Next, with reference to Fig. 5, the wire coating layer scraper 700 will be described in a state in which the wire guiding part 100 is attached to the scraper main body part 600. Fig. 5(a) is a perspective view of the wire coating layer scraper 700, Fig. 5(b) is a front view of the wire coating layer scraper 700, and Fig. 5(c) is a front view of the wire coating layer scraper 700.

[0028] As shown in Fig. 5, when attaching the electric wire guiding part 100 to the scraper main body 600, the electric wire guiding part 100 is orientated to the scraper main body 600 so that the insertion parts (112, 122) of the electric wire guiding part 100 are inserted into the electric wire insertion holes 630 of the scraper main body 600. Then, one base part 111 of the electric wire guiding part 100 is abutted against one mounting surface 611 of the mounting part 640 of the scraper main body 600, and the other base part 121 of the electric wire guiding part 100 is abutted against the other mounting surface 621 of the mounting part 640 of the scraper main body 600. Then, the insertion parts (112, 122) of the electric wire guiding part 100 are firmly inserted all the way into the electric wire insertion holes 630 of the scraper main body 600. At this time, the abutting portion 119 of the electric wire guiding portion 100 is arranged to face the stepped wall 622 of the scraper main body portion 600, so that the user can recognize the correct insertion direction of the electric wire guiding portion 100.

[0029] Furthermore, when attaching the wire guiding unit 100 to the scraper main body 600, the worker presses the operating portion 663 of the movable pin 660 with a finger or the like. This causes the shaft 611 and head 662 of the movable pin 660 to move inward (see the arrow in FIG. 5(b)). When the movable pin 660 moves to the position shown in FIGS. 5(a) and 5(b) (hereinafter referred to as the attachment position), the head 662 of the movable pin 660 can be inserted into the insertion hole 114 of the attachment hole 113 of the wire guiding unit 100. Then, as shown in FIG. 5(c), when the worker releases his / her finger from the operation portion 663 of the movable pin 660, the shaft 611 and head 662 of the movable pin 660 are automatically pushed outward (see the arrow in FIG. 5(c)) by the biasing force of the biasing member 664 and return to their original positions. At this time, head 662 of movable pin 660 inserted into insertion hole 114 of mounting hole 113 moves from insertion hole 114 to engagement hole 115 and engages with the periphery of engagement hole 115. As a result, movable pin 660 engages with mounting hole 113 of electric wire guiding part 100, and electric wire guiding part 100 is firmly fixed so as not to come off from scraper main body 600.

[0030] Furthermore, when attaching the wire guide unit 100 to the scraper main body 600, the fixing pin 650 of the scraper main body 600 is inserted into the mounting hole 123 of the wire guide unit 100. The fixing pin 650 is fixed to the scraper main body 600 and cannot move. Furthermore, the mounting hole 123 of the wire guide unit 100 has a shape that is approximately the same as that of the fixing pin 650 so that the inserted fixing pin 650 does not move. Therefore, the fixing pin 650 of the scraper main body 600 does not move when inserted into the mounting hole 123 of the wire guide unit 100. Furthermore, when the electric wire guiding part 100 is attached to the scraper main body part 600, the guide hole 130 of the electric wire guiding part 100 and the electric wire insertion hole 630 of the scraper main body part 600 are aligned in a straight line, so that, as will be described later, the electric wire can be stably inserted in a straight line through the guide hole 130 of the electric wire guiding part 100 and the electric wire insertion hole 630 of the scraper main body part 600.

[0031] When removing the wire guide part 100 from the scraper main body 600, the operator pushes the operating part 663 of the movable pin 660 inward with a finger or the like to move the head part 662 of the movable pin 660, which is engaged with the engagement hole 115 of the mounting hole 113, from the engagement hole 115 to the insertion hole 114. Then, by pulling the wire guide part 100 outward so that the head part 662 of the movable pin 660 comes out of the insertion hole 114 of the mounting hole 113, the wire guide part 100 can be removed from the scraper main body 600. In this way, since the mounting hole 113 is provided with the insertion hole 114 and the engagement hole 115, the wire guide part 100 can be easily attached to and detached from the scraper main body 600 simply by moving the movable pin 660 between the insertion hole 114 and the engagement hole 115.

[0032] While movable pin 660 and fixed pin 650 are provided as pins for fixing wire guide unit 100 so as not to rotate relative to scraper main body 600, the present invention is not limited thereto, and as pins for fixing wire guide unit 100 so as not to rotate relative to scraper main body 600, only one of movable pin 660 and fixed pin 650, or multiple fixed pins, may be provided. Furthermore, movable pin 660 is provided in scraper main body 600, and mounting hole 113 is provided in wire guide unit 100, but the present invention is not limited thereto, and movable pin 660 may be provided in wire guide unit 100, and mounting hole 113 may be provided in scraper main body 600. Furthermore, fixed pin 650 is provided in scraper main body 600, and mounting hole 123 is provided in wire guide unit 100, but the present invention is not limited thereto, and fixed pin 650 may be provided in wire guide unit 100, and mounting hole 123 may be provided in scraper main body 600. Furthermore, the mounting hole 113 is configured to include the insertion hole 114 and the engagement hole 115, but is not limited to this and may have any shape as long as it includes the engagement hole 115.

[0033] Next, referring to Fig. 6, an embodiment of scraping off the coating of the electric wire W with the electric wire coating layer scraper 700 will be described. Fig. 6(a) is a perspective view of the electric wire coating layer scraper 700, and Fig. 6(b) is a front view of the electric wire coating layer scraper 700.

[0034] As shown in Fig. 6, when scraping off the coating from the tip of the electric wire W, the tip side of the electric wire W is inserted into the guide hole 130 of the electric wire guide part 100 and guided into the electric wire insertion hole 630 of the scraper main body part 600. In this state, when the operator holds the scraper main body part 600 of the electric wire coating layer scraper 700 in his / her hand and rotates it around the electric wire W (see arrow P1 in Fig. 6), the tip 608 of the scraping blade 609 scrapes off the coating of the electric wire W.

[0035] Furthermore, due to the resistance when scraping off the insulation of the electric wire W, a reaction force is generated on the tip 608 of the scraping blade 609 in the direction opposite to the rotation direction of the wire insulation layer scraper 700 (arrow P2 in FIG. 6). This reaction force then applies a force F to the wire guide part 100 through which the electric wire W is inserted in the direction opposite to the rotation direction of the wire insulation layer scraper 700 (arrow P2 in FIG. 6). However, since the fixed pin 650 is disposed on the guide part segment 120 side located on the scraping blade 609 side, the fixed pin 650 receives the force F from the scraping blade 609, and therefore the wire guide part 100 can be maintained firmly fixed so as not to rotate relative to the scraper main body 600. On the other hand, since the movable pin 660 is disposed on the other guide part segment 110 side, it is not subjected to the force F from the scraping blade 609. Therefore, the movable pin 660 is not moved by the force F from the scraping blade 609, and the wire guiding part 100 can be prevented from accidentally coming off the scraper main body 600 when scraping off the coating of the wire W.

[0036] Furthermore, when it is desired to scrape off the coating layer from the middle portion of the electric wire W, the connecting and fixing part 602 is released and the main body segments (610, 620) are rotated so as to open as shown in FIG. 2. The guide segment 110 of the electric wire guide part 100 is connected to the main body segment 610 by the movable pin 660, and the guide segment 120 of the electric wire guide part 100 is connected to the main body segment 620 by the fixed pin 650. Therefore, the guide segment pieces (110, 120) of the electric wire guide part 100 also rotate so as to open as shown in FIG. 4(b). Therefore, the middle portion of the electric wire W can be inserted into the guide hole 130 of the electric wire guide part 100 and the electric wire insertion hole 630 of the scraper main body 600. In this state, if the main body segments (610, 620) of the scraper main body 600 are closed, the guide segment pieces (110, 120) of the electric wire guide portion 100 are also closed, and the electric wire W can be maintained in a state where it is inserted without coming out of the guide hole 130 of the electric wire guide portion 100 and the electric wire insertion hole 630 of the scraper main body 600. Then, when the operator holds the scraper main body 600 of the electric wire coating layer scraper 700 by hand and rotates it around the electric wire W (see arrow P1 in FIG. 6), the tip 608 of the scraping blade 609 scrapes off the coating from the middle portion of the electric wire W.

[0037] Next, referring to FIG. 7, a description will be given of an embodiment in which a wire guide unit 100A corresponding to wires of different diameters is attached to a scraper main body 600 in order to scrape off the coating of wires of different diameters. Note that FIG. 7 assumes scraping off the coating of a thin wire having a smaller diameter than the wire W described in FIG. 6. Also, FIG. 7(a) is an overall perspective view of the wire guide unit 100A, and FIG. 7(b) is a front view of the wire coating layer scraper 700 with the wire guide unit 100A attached to the scraper main body 600. Note that the wire guide unit 100A differs from the wire guide unit 100 shown in FIGS. 3 and 4 only in the size and position of the guide hole 130A, and other configurations are the same as those of the wire guide unit 100. Therefore, detailed description of the same configuration as the wire guide unit 100 will be omitted.

[0038] As shown in FIG. 7(a), the diameter of the guide hole 130A of the electric wire guide unit 100A is small to accommodate electric wires with small diameters. The method of attaching the electric wire guide unit 100A to the scraper body 600 is the same as the method of attaching the electric wire guide unit 100 to the scraper body 600 described with reference to FIG. 5. Then, as shown in FIG. 7(b), when the electric wire guide unit 100A is attached to the scraper body 600, the guide hole 130A is disposed adjacent to the tip 608 of the scraping blade 609. Specifically, as shown in FIG. 5, in the case of a thick electric wire W, the guide hole 130 is disposed in the center of the electric wire guide unit 100. However, in the case of a thin electric wire W, as shown in FIG. 7(b), the guide hole 130A is eccentric from the center of the electric wire guide unit 100A toward the tip 608 of the scraping blade 609. Therefore, even if the electric wire is thin, when the electric wire is inserted into guide hole 130A, the electric wire is guided to a position close to tip 608 of scraping blade 609. As a result, tip 608 of scraping blade 609 can come into contact with the insulation of the electric wire, and the insulation of the electric wire can be scraped off stably.

[0039] It is also possible to prepare multiple wire guides 100, each with the position of the guide hole 130A of the wire guide 100A appropriately changed to accommodate wires of various diameters. By preparing wire guides 100 with guide holes 130A of corresponding sizes and positions to match the diameter of the wire and attaching them to the scraper body 600, the wire coating layer scraper 700 can easily accommodate multiple wires of different diameters. In particular, since the wire guide 100 is detachable from the scraper body 600, it can be easily replaced with a wire guide 100 that corresponds to a wire of a different diameter, allowing for stable coating removal. Furthermore, the guide section segments (110, 120) of the wire guide 100 can be rotated open, allowing the coating to be removed not only from the tip of the wire but also from the middle portion. Furthermore, since the guide portion segments (110, 120) of the electric wire guide portion 100 are rotatably connected to each other, the guide portion segments can be easily opened and closed, which is very convenient when scraping off the coating of the middle portion.

[0040] The wire coating layer scraper of the present invention is not limited to the above examples, and various modifications and combinations are possible within the scope of the claims and the scope of the embodiments, and these modifications and combinations are also included in the scope of rights. [Explanation of symbols]

[0041] 100 Wire guidance section 110 Guided segment 120 Guided segment 130 Guide hole 600 Scraping device main body 630 Wire insertion hole 700 Wire coating layer scraper W electric wire

Claims

1. A wire coating layer scraper comprising a scraper body and a wire guide part detachably fixed to the scraper body, The wire guide portion is composed of a pair of guide portion segments, and has a guide hole through which the wire can be inserted. A wire coating layer scraper characterized in that, when the wire guide portion is attached to the scraper main body portion, the guide hole is aligned in a straight line with the wire insertion hole of the scraper main body portion.

2. The wire sheath stripper according to claim 1, characterized in that the guide portion segment is fixed so as not to rotate relative to the scraper body portion by a pin provided between the guide portion segment and the scraper body portion.

3. The pin includes a movable pin and a fixed pin, The movable pin is configured to be movable when the wire guide part is attached to the scraper body part, The fixing pin is arranged on one of the guide portion segments located on the scraping blade side of the scraper body portion, 3. The wire stripper according to claim 2, wherein the movable pin is disposed on the other side of the guide portion divided piece.

4. The wire stripper according to claim 3, characterized in that the mounting hole comprises an insertion hole into which the movable pin is inserted to attach the wire guide portion to the scraper main body portion, and an engagement hole into which the movable pin engages to fix the wire guide portion to the scraper main body portion.

5. 5. The wire stripper according to claim 1, wherein the pair of guide portion segments are rotatably connected to each other.

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