JP6151977B2 - Method for removing insulation layer from insulated wire, and insulation layer removal apparatus - Google Patents

Description

  The present invention relates to a method for removing an insulating layer in an insulated wire, in which the insulating layer on the end side of the insulating wire in the circumferential direction is removed from the insulating layer in the circumferential portion of the insulating layer near the end, and to the insulating wire in the insulated wire The present invention relates to an insulating layer removing apparatus to be used.

  Various methods are conventionally known as a method for removing an insulating layer at an end (front end or rear end) of an insulated wire (an electric wire with an insulating layer or a cable). For example, in the case of a relatively thin insulated wire, a simple method is to use a tool such as a so-called nipper. In this method, the insulation layer (insulation coating) around the conductor is cut without cutting the inner conductor (core wire) at a predetermined position of the cable end portion (front end portion or rear end portion) with a tool blade. A layer, such as vinyl or polyethylene, is cut in the circumferential direction. And the tool is moved to the end side of the insulated wire in the cut state, and the insulating layer to be removed is extracted (peeled) (Patent Document 1).

  By the way, even if the insulating layer on the end (hereinafter also referred to as the front end) side is removed from the cut near the end of the insulated wire, the insulation layer to be removed (or stripped) is not cut. Sometimes you want to do it in a different process, such as in a different place. For example, in a wire harness work product in which a large number of insulated wires are assembled in a bundle, a terminal fitting is crimped to the end of each insulated wire. This is because in such a case, in all of the many insulated wires, the conductor is exposed at the end, and in that state, if the terminal fittings are fixed to the wires one by one, they are exposed. This is because the conductors that are present may be deformed during the transfer or handling process up to the fixing process, and the conductors do not smoothly enter the crimping portion of the terminal fitting, making the crimping operation difficult. In particular, when each insulated wire has a large number of thin conductors (stranded wires) as the core wire, the thin wires forming the conductor exposed at the ends of the numerous insulated wires are scattered or deformed. These problems are likely to occur.

  In contrast, each insulated wire has only a cut in the insulating layer, and in accordance with the crimping work process, immediately before the process is performed, the previous insulating layer is extracted from the cut and a conductor is formed at the end. If the terminal metal fitting is exposed and the terminal fitting is crimped immediately thereafter, the above-described problem of deformation does not occur. Therefore, the efficiency of the crimping process can be improved as a whole. This is an example in the case where only the cut is made in the insulating layer and the insulating layer to be removed is extracted (or removed) in a separate process.

Japanese Patent Laid-Open No. 2004-140979

  However, conventionally, in order to expose the conductor near the end of the insulated wire, even if the cut is formed in the insulating layer in advance, the insulating layer located on the end side from the cut is then removed. There was no method and no suitable apparatus for it. Further, in the case where the cut is provided in the insulated wire as described above, in order to facilitate the removal of the insulating layer to be removed in a separate process, not only the cut is made but also the fine width ( In some cases, a gap (gap) of about 1 to 2 mm is actively provided. In such a case, the inventors of the present application have a thin thickness corresponding to the gap, for example, approximately equal to the diameter of the conductor so that the insulated wire just fits in the cut portion on one side of the metal strip. A U-shaped notch is formed into a jig, which is used to remove it. Specifically, the insulated wire is fitted into the notch of the jig at the notch, and the edge of the insulating layer to be removed (rear end) is engaged with the edge of the notch as a nail, and insulation is performed in that state. By pulling the electric wire to the rear end side, the insulating layer to be removed is extracted from the conductor.

  However, when using such a jig, the operator should carefully grasp the positional relationship with his / her eyes so that the gap between the narrow cut portion of about 1 to 2 mm fits into the notch of the jig with the insulated wire in hand. While chasing and checking, it is necessary to move the insulated wire to the side and push it in. For this reason, there was a problem that simple and quick extraction and removal were impossible. Moreover, the groove width of the gap in such a cut may be smaller than the plate thickness of the jig due to variations in formation and the process of transferring or handling the insulated wire. Therefore, in such a case, it is necessary for the operator to perform a troublesome work of expanding the groove width of the gap in the cut with his / her own nail. This occurs, for example, when the insulated wire is processed as follows. That is, this is a case where a plurality of insulated wires are assembled to the seal member by passing the end of the insulated wire on the cut forming side through a through hole provided in the rubber seal member. In such a case, the groove width of the gap at the end-side cut out is smaller than before insertion due to the insertion resistance when passing through the through hole.

  In view of the above-described problems, the present invention provides an insulated wire in which a cut is formed in the circumferential direction in the insulating layer near the end, and the insulating layer on the end side of the cut is easily and quickly extracted. It is an object of the present invention to provide a method that can be removed and an insulating layer removing apparatus suitable for the method.

The present invention according to claim 1 is an insulating layer in an insulated wire, wherein the insulating layer on the front end side is removed from the insulating wire in which a cut is formed in the circumferential direction in the insulating layer near the front end. In the removal method of
An insulating layer removing device, wherein a plurality of claw members each having a toe formed so as to be able to enter the notch are disposed so that the toes face each other so that the insulated wire can be sandwiched therebetween, and are closed. The plurality of claw members are closed by a spring, while the insulated wire is pushed against the spring from the front end between the claw tips when the claw members are closed. Using an insulating layer removal device configured to open between each other,
The insulated wire, pushing to advance toward between the front end of the toe mutually the incision, in such a manner that the pawl tip position and Eru Yue position, then pulled back, during the course pullback after the pushing body The toe is inserted into the notch by the action of the spring and engaged with the rear end of the insulating layer to be removed located on the front end side, and in this engaged state, the insulated wire is pulled back to insulate the object to be removed. The layer is removed.

The present invention described in claim 2
Among the claw members, at least the rearward facing surface of the portion near the toe that receives the pushing force by the front end of the insulated wire is directed forward by the front end being pushed forward by a combination of the rearward facing surfaces of a plurality of claw members. The method for removing an insulating layer in an insulated wire according to claim 1, wherein the insulating layer is formed to have a tapered shape.
According to a third aspect of the present invention, the insulating layer removing apparatus is provided with a guide means for pushing the front end of the insulated wire between the toes when the insulating layer removing device is closed. The method for removing an insulating layer in an insulated wire according to claim 1, wherein the wire is guided and pushed by the guide means.

According to the present invention of claim 4, the insulating layer removing device is provided with a stopper against which the front end of the insulated wire to be pushed hits so as to obtain a predetermined pushing stroke in pushing the insulated wire. The method for removing an insulating layer in an insulated wire according to any one of claims 1 to 3, wherein the front end of the pressing is brought into contact with the stopper.
The present invention described in claim 5 is characterized in that the two claw members are provided facing each other and are pinned so as to swing around axes parallel to each other. It is a removal method of the insulating layer in the insulated wire of any one of 1-4.

According to the sixth aspect of the present invention, a cut is formed in the circumferential direction of an insulated wire in which a cut is formed in the circumferential direction in the insulating layer near the front end, and the insulation is located on the front end side of the cut from the cut. An insulation layer removal device used to remove a layer,
A plurality of claw members having toes that are formed so as to be able to enter the notch are provided so as to close each other with the toes facing each other so that the insulated wire can be sandwiched between the claw members, The insulated wires are pushed against the spring from the front end between the toes when closed by the spring, so that the toes are opened. A claw member device comprising a stopper, and when the insulated wire is pushed between the toes, a notch is provided at a position where the notch exceeds the toe position and the front end is applied. It is characterized by becoming.
The present invention according to claim 7 is the insulating layer removing apparatus according to claim 6, further comprising guide means for guiding and pushing the front end of the insulated wire between the toes.

According to the method for removing an insulating layer in an insulated wire of the present invention, an insulated wire having a notch in a portion near the front end is directed from the front end to between the toes of the insulation layer removing device, that is, the insulated wire is The insulation layer to be removed is removed by a process of pushing in a predetermined amount so as to advance from the front end toward the toes, and then pulling back (retracting) the insulated wire. And in the said insulating-layer removal apparatus used for this process, the toe | tip is provided so that it may close with the force of a spring. Therefore, during the course pullback after the push himself, because the toe can enter into easily cut the insulated wire, it can be removed to be removed of the insulating layer easily, quickly. As described above, according to the present invention, since the insulating layer to be removed can be removed by a simple operation of forward and backward movement of the insulated wire, it is possible to simplify and speed up the removal.

  It should be noted that the toe of the claw member should be as sharp as possible, particularly when the cut has no, almost no, or small gap (gap). On the other hand, when the groove width of the gap generated in the cut (the groove width in the longitudinal direction of the electric wire in the cut) is relatively large, the toe easily enters the cut. In addition, the ease of entry also varies depending on the spring force (the force for sandwiching the insulated wire) that the claw member tries to close. Furthermore, it varies depending on how the insulated wire is pulled back (speed of pulling back). That is, when pulling back slowly, the toe easily enters the cut. In this way, the ease of entering the toe into the incision varies depending on these conditions, so that the thickness of the toe, the angle of the tip, etc., depending on the conditions so that the toe can easily enter into the incision. Should be set. Further, the toe of the claw member needs to be engaged (hooked) with the rear end of the insulating layer to be removed when the insulated wire is pulled back. For this reason, the front facing surface and the insulated wire are pushed in so that the front facing surface (the surface facing the reverse direction of the rear facing surface) of the claw tips of each claw member is easily engaged (hooked) with the rear end. The angle formed by the line drawn in the direction should be as large as possible.

  In addition, the rearward facing surface of the part closer to the toe is formed so as to form a tapered shape toward the front side where the front end of the insulated wire is pushed forward by a combination of a plurality of claw members configured. It is preferable to make it easy to push it between the toes. In order to facilitate this pushing, the insulating layer removing apparatus used in the above method is provided with guide means for pushing the front end of the insulated wire between the toes when closed. The insulated wire may be pushed by being guided by the guide means. This is because even a flexible insulated wire can be guided properly and easily between the toes and can be pushed easily. In addition, although such a guide means can be made into the ditch | groove or tunnel extended in the linear form formed in the block piece, for example, you may form in the back facing surface of each nail | claw member itself.

Furthermore, it is preferable that the insulating layer removing apparatus used in the above method is provided with a stopper against which the front end of the insulated electric wire to be pushed hits so that a predetermined pushing stroke can be obtained in pushing the insulated electric wire. In this case, in their pushing, by arresting its progress by positioning the included cut appropriate amount than the toe, the front, it is possible to set a pullback amount for entering the notch toe to a predetermined amount, easier it allowed that enter Is planned .

  In addition, it is preferable to provide two said claw members in the said insulating layer removal apparatus facing each other for the simplification of the structure of this apparatus. In this case, the claw member may be provided so as to reciprocate linearly, but it is preferable that the claw member is pinned so as to swing around axes parallel to each other for smooth opening and closing. In addition, the toes may be formed in a straight line in a direction transverse to the sandwiched insulated wire, but, for example, corresponding to the cross section (shape, dimension) of the conductor of the insulated wire When two claw members are used, they may be formed in a semicircular arc shape. In addition, when two claw members are provided facing each other, a plurality of (insulated) electric wires can be sandwiched at a time. However, in that case, since each of the insulated wires is clamped by the claw tips of the two claw members facing each other, such a clamped state is obtained when the guide means is provided. Just as a guide. In the present invention, when the toes are closed, there may be a gap (gap).

The embodiment which materialized another invention (reference invention) different from the method of this invention , and the partially broken schematic structure front view of the insulating layer removal apparatus used for embodiment of the method of this invention. FIG. 2 is a cross-sectional view taken along line S1-S1 excluding the substrate in FIG. FIG. 2 is a cross-sectional view taken along line S2-S2 excluding the substrate in FIG. The A1 section enlarged view of FIG. The enlarged view of the toe | toe part seen from arrow A1 (from the front of an apparatus) in FIG. FIG. 3 is a cross-sectional view taken along line S3-S3 in FIG. The figure explaining the insulated wire into which the cut was made, and the enlarged view of the cut part. FIG. 8 is a schematic diagram for explaining the pushing process of the insulated wire in FIG. 7, wherein A is a view immediately before pushing the front ends of the insulated wires between the toes, and B is a spread between the toes and using the front ends of the insulated wires as a stopper. Figure when pushed in until it hits. FIG. 9 is a schematic diagram for explaining a step of pulling back the insulated wire pushed in FIG. 8, C is a diagram in the middle of pulling the toe engaged with the rear end of the insulating layer to be removed, and D is a pullback of the insulated wire. The figure when it finishes and the insulating layer of removal object is removed. The figure which shows another example of an indentation process, and its partial enlarged view. The figure which shows another example of a guide means. Explanatory drawing when the toe | tip part which pinched | interposed the several insulated wire pushed in simultaneously with the toe | toe is seen from the front of the apparatus. Explanatory drawing when another example of a toe is seen from the front of the device. Explanatory drawing of another example of a nail | claw member.

Prior to that , the embodiment of the present invention will be described. Before that, the position of the cut when the insulated wire is pushed forward from its front end toward the toes is pushed into the same position as the toe position. In another embodiment (hereinafter referred to as “reference embodiment”) that embodies another invention different from the method of the present invention according to claim 1 (hereinafter referred to as “reference invention”), and in this reference embodiment example The insulating layer removal apparatus (hereinafter also referred to as this example apparatus) to be used will be described in detail with reference to FIGS. The apparatus of this example (hereinafter also referred to as “this example” or “the above example”) 100 has a pair of identical shapes on one surface (hereinafter referred to as “substrate surface 12”) of a flat substrate 11 erected on the base 10. The claw members 20 having the same structure are provided symmetrically with respect to the horizontal straight line (center line) X shown in the figure. That is, the two claw members 20 can be sandwiched between the insulated wires 200 (indicated by a two-dot chain line in FIG. 1), which are moved forward and backward along the center line X, on the substrate surface 12. Each toe 22 is provided so as to face each other. The claw member 20 has a V-shaped open leg shape on the claw member base 23 side (right side in FIG. 1), and is pinned at the claw member base 23, that is, rotates around the pin by a pin (circular axis) 25. As installed. As a result, each claw member 20 is provided so as to swing along the substrate surface 12 with the pin 25 (center) as the center of rotation so that the toe 22 can be closed. However, in this example, the pins 25 are provided so that the axes thereof are parallel to each other, and each claw member 20 is provided so that the claw member 20 rotates around the axis and the claw tip 22 swings while drawing an arc. ing. The claw member 20 has a long and narrow polygonal shape when viewed from the front (FIG. 1), and is formed of a plate member having a constant thickness.

  In this example, the claw member 20 is formed in a groove 31 that is recessed on one side (center line X side) of the block-shaped holding member 30 fixed to the substrate surface 12 by the screw member 14. The claw member base 23 is fixed with a pin 25 on the right side of the drawing (FIG. 1) (see FIGS. 1 and 2). Therefore, each claw member 20 is provided so as to swing along the substrate surface 12 in the groove 31. In addition, each claw member 20 has an appropriate force (compressive force) between each claw tip 22 by a spring force obtained by compressing a spring (for example, a coil spring) 26 disposed in the groove 31 of the holding member 30. ) Are arranged so as to be closed (see FIGS. 1 and 3).

  Further, the claw member 20 of this example has a sharp toe 22 formed, and as shown in FIG. 4, a rear (right side in FIG. 1) facing surface 27 and a front (left side in FIG. 1) facing surface 28, as shown in FIG. Is an acute angle (for example, 60 degrees) when viewed from the front. Then, when the claw member 20 is pushed by the spring 26 and the toe 22 is closed, the rearward facing surface (right side in the drawing) 27 near the toe 22 has an angle β formed between the claw member 20 and the center line X. Is set to be an acute angle (for example, 40 degrees). As a result, when the toe 22 is closed, the rearward facing surfaces 27 of the two opposing toe 22 are narrowed toward the left in the figure (FIG. 1) by the two rearward facing surfaces 27. It is formed so as to form a shape.

  On the other hand, when the toes 22 are closed, as shown in FIG. 4, the front-facing surface 28 near the toe 22 has an obtuse angle (for example, 80 degrees) with the angle γ formed by the center line X. Is set to In this example, the toe 22 of each claw member 20 is a straight line extending perpendicularly to the substrate surface 12 (the paper surface of FIG. 1). That is, as shown in FIG. 5, the claw tips (ridge lines) 22 of the two opposing claw members 20 are parallel to each other and are formed so that the insulated wire 200 can be sandwiched when they are closed. Thereby, in this insulating layer removing apparatus 100, the insulated wire 200 advances from the side of the claw member base (open leg) 23 between the two claw members 20 toward the gap between the claw tips 22 along the center line X. When the front ends of the insulated wires 200 are pushed between the closed toes 22, the front ends of the insulated wires 200 come into contact with the rearward-facing surface 27 inclined at an angle β near the toes 22. By the component force that causes the claw member 20 to swing due to the force, the claw member 20 is opened minutely so that the claw member 20 opens around the pin 25 of the base 23 against the compressive force of the spring 26. Although it is an angle, it is provided so as to swing a predetermined angle.

  Further, in this example, as shown in FIGS. 1 and 6, the insulated wire 200 is connected between the nail members 22 along the center line X between the nail member bases 23 (open legs) of the two nail members 20. Guide means (guide member) 40 is provided for advancing straightly between the two. The guide means 40 only needs to be able to guide and advance the insulated wire 200 between the toes 22 along the center line X, and the insulated wire 200 and the minute wires are formed on both sides along the center line X. Although it may be provided as a wall provided so as to hold the gap or a bowl-shaped concave groove, in this example, a through-hole (insulated electric wire 200 provided in a straight tunnel shape in the guide member 40 is provided. A hole through which a minute gap can be held (hereinafter referred to as a guide hole) 43. In this example, the entrance (right side in FIG. 1) 44 of the guide hole 43 is provided so as to expand the diameter toward the entrance side end, thereby facilitating the start of entering the front end of the insulated wire 200. Further, the exit (left side in FIG. 1) of the guide hole 43 of the guide member 40 is opened at a position close to the toe 22 in order to accurately guide the front end of the insulated wire 200 between the toes 22.

  In this example, the guide hole 43 that forms the guide means 40 is a circular hole having an inner diameter that is slightly larger than the outer diameter of the insulated wire 200 so that the guide hole 43 can be advanced through one insulated wire 200. However, the guide hole 43 is formed by, for example, pressing two insulated wires 200 at a time between the toes 22 so that two notches provided in the two insulated wires 200 are opposed to each other. It is good also as a setting which inserts the toe 22 and removes an insulating layer simultaneously. And the guide hole 43 in that case is, for example, passing the two insulated wires 200 so that each of the two insulated wires 200 can be sandwiched between the two toes 22 facing each other. It can be a long hole with a cross section that can be made. This will be described later. In this example, the guide member 40 is formed in a tapered shape so that the tip side thereof is maintained along the inclination of the rearward-facing surface (right side in the drawing) 27 near the toe 22 of the claw member 20. The outlet is provided at the tip of the tapered portion. The guide member 40 is positioned with respect to the substrate 11 and is fixed by a screw member or the like (not shown).

  Furthermore, in this example, the front end of the insulated wire 200 pushed between the toes 22 is applied to the side opposite to the side where the guide member 40 is provided (the right side in FIG. 1) between the two toes 22. Thus, a stopper (stopper member) 60 for stopping the advancement is provided so as to intersect the center line X. The stopper 60 is made of, for example, a rectangular plate having a constant thickness, and one side surface (the right side surface in FIG. 1, referred to as the stopper surface 61) on which the front end of the insulated wire 200 hits is perpendicular to the center line X. As shown in FIG. 3, the predetermined distance L1 is provided away from the closed toe 22. However, the stopper 60 is attached by screwing a bolt (screw member) 15 passed from the back side of the substrate 11 into a screw hole provided at each end portion. For this attachment, the hole provided in the substrate 11 is a long hole extending in the direction along the center line X as shown by the broken line in FIG. The position (dimension L1) of the surface 61 can be adjusted. That is, according to the insulated wire 200, when it is pushed between the toes 22 and the front end of the insulated wire 200 hits the stopper surface 61, the position of the cut is the same position as the toe 22 or The dimension between the stopper surface 61 and the toe 22 can be adjusted depending on whether it is positioned closer to the toe 22 (on the stopper surface 61 side). It should be noted that portions closer to each end (upper and lower ends in FIG. 1) of the one side surface forming the stopper surface 61 are cut in an inclined manner so as not to interfere with the claw member 20 and the like. The hole provided in the substrate 11 through which the screw member 14 for fixing the holding member 30 is passed is also a long hole for adjusting the fixing position. However, in order to adjust the position between the toes, etc., as shown by a broken line in FIG. 1, the elongated hole extends in a direction orthogonal to the center line X (long).

Next, a method of exposing the conductor to the portion near the front end of the insulated wire 200 using the insulating layer removing apparatus 100 as described above will be described with reference to FIGS. As shown in FIG. 7, the insulation layer (insulating resin layer covering the conductor) 205 near the front end 202 of the insulated wire 200 is placed in a circumferential direction at a predetermined position (a predetermined dimension L2 from the front end 202 of the insulated wire 200). The notch 207 is formed by a conventionally known method. This dimension L2 is set based on the conductor length to be exposed. In order to make it easier for the toe 22 to enter the notch 207, an appropriate amount, for example, a groove width of about 0.5 to 2 mm (dimension) is formed in the notch 207 from the L2 position toward the front end 202 side. However, in this example, there is no gap. Thereby, the insulating layer located on the front end 202 side including the notch 207 becomes the insulating layer 205b to be removed. In the present embodiment , for the insulating layer removing apparatus 100, the dimension L1 from the toe 22 to the stopper surface 61 is substantially the same as this dimension L2.

On the other hand, the operator grasps the appropriate position of the electric wire 200 and, as shown in FIG. 8A, from the front end 202 side of the insulating layer 205b to be removed where the notch 207 is formed, the guide hole of the guide member 40. Through the inlet 44 of 43, it pushes in the direction of the arrow shown in the figure. By this pushing, based on the configuration of the claw member 20, the front end 202 of the insulated wire 200 first has a tapered shape at a portion closer to the tip of each claw tip 22 among the claw tips 22 of each claw member 20. It is pressed against the rearward facing surface 27 (see FIG. 8A). Each claw member 20 swings so as to open its toe 22 by the component force generated by this pressing. That is, the insulated wire 200 opens between the toes 22 against the spring 26 and is pushed forward while being sandwiched therebetween. Then, the front end 202 hits the stopper surface 61 of the stopper 60 (see FIG. 8B), and the pushing operation is completed. At this time, in the present embodiment , the toe 22 is located at the notch 207 in the insulated wire 200 by the above setting. For this reason, at the end of pushing, the toe 22 of both the claw members 20 sandwiches the insulated wire in the form of being fitted into the notch 207 by the spring 26 (see FIG. 8B). Therefore, after that, when the insulated wire 200 is pulled back, the rear end 203 of the insulating layer 205b to be removed is engaged.

That is, after this pushing, the operator grasps the rear end side of the insulated wire 200 and pulls the insulated wire 200 back in the direction of the arrow shown in FIG. 9-C with an appropriate tensile strength and pullback speed. As a result, the insulating layer 205b to be removed can be extracted from the portion near the front end of the insulated wire 200 that has been pulled back, so that a gap is formed in the cut 207 and the gap is widened. Then, by continuing the pull back, the insulating layer 205b to be removed is separated from the front end of the insulated wire 200, and the conductor 210 is exposed for a predetermined length L2 at a portion near the front end (see FIG. 9-D). . Thus, the removal is complete. The removal process will be described in detail as described above. In this process, the operator inserts a portion closer to the front end 202 of the insulated wire 200 to be worked into the guide hole 43 of the guide member 40 and the front end 202 thereof. The simple operation of only the forward and backward movement of the insulated wire 200 is required. As described above, in the case of the method according to the present embodiment , the insulating layer 205b to be removed can be removed by a simple operation of moving the insulated wire 200 forward and backward, thereby simplifying and speeding up the removal. In addition, by providing a gap in the notch 207 before the indentation, the toe 22 can easily enter the notch, and therefore work efficiency is improved.

That is, as in the conventional case, the insulated wire 200 is approximately equal to the diameter of the conductor so that the insulated wire 200 is fitted into one side of the notch 207 at one side of a thin metal strip corresponding to the groove width of the notch 207. When using a jig formed with a matching U-shaped notch and removing the insulating layer ahead of the notch 207, the operator must ensure that the notch 207 is fitted into the notch of the jig. It is necessary to ensure the engaged state in such a form that the insulated wire 200 is moved laterally while carefully following and confirming the positional relationship with the eyes. On the other hand, when the method according to the present embodiment is used, the front end 202 of the insulated wire 200 is pushed into the guide hole 43 of the guide member 40 and is pushed into the notch 207. The toe 22 can be inserted. Therefore, after the pushing, it is only necessary to pull back, so that the insulating layer to be removed can be easily and quickly removed as compared with the conventional method.

In the above operation, if the contact of the front end 202 of insulated wire 200 to the stop surface 61 (or collision) is the operator with feeling experienced hands, it can grasp the push completion, this reference embodiment In the example , the contact or collision for causing the toe 22 to enter the notch 207 can be visually observed by the operator. For this reason, since contact | abutting can be grasped | ascertained also by the visual recognition, workability | operativity is improved. Further, in the above reference embodiment , among the claw members 20 constituting the claw member device constituting the insulating layer removing apparatus 100, the rearward facing surface 27 at least near the toe 22 receiving the pushing force by the front end 202 of the insulated wire 200 is By the combination of the rearward facing surfaces 27 of the respective claw members 20, the front end 202 is pushed in and is formed so as to form a tapered shape at an acute angle β toward the front. For this reason, since the toe 22 can be opened with a small pressing force, the pressing is facilitated.

Furthermore, since the guide means 40 is provided in the insulating layer removing apparatus 100 in the present embodiment , it is easy to push the insulated wire 200 between the toes 22. That is, if the insulated wire 200 is soft, it is not easy to advance straight unless it grips a portion near the front end 202, and therefore it is not easy to smoothly push the front end 202 toward the toes 22. On the other hand, since the guide means 40 is provided as described above in the present embodiment , it is easy to advance straight. In addition, in the present embodiment , since the diameter of the inlet 44 of the guide hole 43 is increased, it is easy to start pushing, so that the efficiency of the work can be improved.

In the above reference embodiment , the stopper 60 is provided and the position of the stopper surface 61 is adjusted so that the notch 207 comes to the position of the toe 22 when the insulated wire 200 is pushed between the toes 22. As described above, in the embodiment that embodies the present invention (embodiment of the present invention), the position of the stopper surface 61 depends on the presence or absence of the gap of the notch 207 or the size of the groove width of the gap. Accordingly, as shown in FIG. 10, when the front end 202 of the insulated wire 200 abuts against the stopper surface 61 by the pushing, the notch 207 may be provided so as to be in a position beyond the position of the toe 22. . In this case, after the pressing (at the end of pressing), the toe 22 has a shape in which the insulated wire 200 is sandwiched by the insulating layer 205 on the rear end side from the notch 207. Therefore, in this case, when the insulated wire 200 is subsequently pulled back, that is, when the portion of the notch 207 is retracted and comes to the position of the toe 22 during the pulling process after the pushing, the toe 22 is moved. What is necessary is just to enter the notch 207 by the force of the spring 26. In this case, it is preferable to provide a gap having an appropriate groove width dimension M1 (for example, about 0.5 to 2 mm) in the notch 207 because the toe 22 can easily enter the notch 207. I can say that. When the toe 22 enters the notch 207 in this way, the toe 22 is then pulled back, and the toe 22 engages the rear end 203 of the insulating layer 205b to be removed. The layer is separated from the insulated wire 200 and removed in the same manner as described above.

  As described above, when the insulated wire 200 is pushed in, the position of the stopper surface 61 is adjusted so that the cut 207 exceeds the position of the toe 22. The groove width (gap width) M 1 in the cut 207 is adjusted. This is suitable when the width L is wide or when the variation in the dimension L2 from the front end 202 to the notch 207 is large. In this case, it is preferable that the clamping force by the spring 26 is sufficiently increased or the angle α of the claw member 20 is made small and sharp so that the toe 22 can easily enter the notch 207 in the retraction process. . As will be understood from this, in the present invention, when the pushing stroke is used, the insulating layer removing apparatus to be used may not have the stopper 60. In that case, the notch 207 may be pushed so as to exceed the toe 22, and for that purpose, it is only necessary to confirm that the notch 207 exceeds the toe 22. is there.

In the above example (reference embodiment, embodiment of the present invention) , at least the rearward facing surface 27 of the claw member 20 near the toe 22 that receives the pushing force by the front end 202 of the insulated wire 200 is the claw member. Since the front end 202 is pushed forward by the rearwardly facing surface 27 of the 20, it is formed to have a conical shape with an acute angle β, and as described above, with a small pushing force, 22 can be opened. However, in the present invention, while the plurality of claw members are closed by the spring, the insulated wire is opened by being pushed against the spring from the front end between the claw tips when closed. What is necessary is just to be comprised. Therefore, when the claw member is to be a claw member device that can be easily spread in a double-spread shape, such a constriction is not necessary.

In the case of embodying the method of the present invention, the above example (reference embodiment, embodiment of the present invention) has been described in the case where the insulating layer removing apparatus 100 is provided with the guide means 40, but it is sufficiently rigid. When a certain insulated wire is targeted, the guide means may not be provided. Further, in the case where the guide means is provided, in the above example (reference embodiment, embodiment of the present invention) , the case where it is provided separately from the claw member 20 is illustrated, but as shown in FIG. The insulated wire 200 is guided when the surfaces facing each other, that is, the rearward facing surface 27 near the toe 22 of each claw member 20 and the rear facing surface 29 connected thereto, are closed. It can also be used as a guide means by making them close to each other, or by providing a groove 46 extending on the surfaces 27 and 29 themselves.

In the above example (reference embodiment, embodiment of the present invention) , the case where one insulated wire 200 is pushed between two opposing toes 22 is explained. A plurality of insulated wires (for example, two insulated wires) may be pushed between the toes. That is, as shown in FIG. 12, by inserting the two toes 22 facing each other into the notches 207 provided in the two insulated wires 200, the insulating layers of the two insulated wires can be removed simultaneously. Therefore, work efficiency can be improved. However, in this case, when the guide means is provided, as shown by the two-dot chain line in FIG. What is necessary is just to set it as an elongate hole of the cross-section which can let the two insulated wires 200 pass so that each may be pushed in the form which can be pinched | interposed between the toes | tips 22, respectively. That is, a long hole having a short diameter (dimension in the direction between the toes 22) slightly larger than the outer diameter of the insulated wire 200 and a long diameter slightly larger than twice the outer diameter may be provided. Moreover, what is necessary is just to set it as the long diameter of the dimension according to the number, when targeting three or more insulated wires simultaneously.

The nail | claw tip of a nail | claw member should just enter the notch | incision of an insulated wire, can engage with the rear end of the insulating layer of removal object, and can extract this. Accordingly, the toe 22 having a straight ridgeline as in the above example (reference embodiment, embodiment of the present invention) may be used, but as shown in FIG. 13, it corresponds to the cross section (circular) of the insulated wire 200. A toe having an arcuate toe (part) 122 that is a recess close to a semicircle, and this may enter the notch 207. Although not shown, a V-shaped groove may be used instead of the arc. And as above-mentioned, when removing an insulating layer simultaneously about a some insulated wire, you may form so that two or more such toe | toe (parts) 122, such as circular arc shape, may be continued.

  In the present invention, the present invention is not limited to the above-described technical contents, and the insulating layer removing apparatus used therefor is not limited to the above-described one, and can be embodied with appropriate modifications. For example, in the above example, the claw member 20 has a structure of the claw member 20 that swings and the toe 22 opens and closes. However, as is apparent from the above description, the claw member is reciprocating in the present invention. It may be moved. For example, as shown in FIG. 14, each claw member 120 is provided on the holding member 130 so as to reciprocate, the toe 122 is closed by a spring 126, and the insulated wire 200 is interposed between the toes 122. It is good also as what formed the back surface 127 of the site | part near the toe 122 so that it might open by pushing. In each of the above examples, since the pair of claws has a pair structure, the structure can be simplified. In the present invention, however, the claws can have three or more claws. .

20, 120 Claw members 22, 122 Toe 26 Spring 27 Backward facing surface 40 near the toe 40 Guide member (guide means)
60 Stopper 100 Insulating layer removal device 200 Insulated wire 202 Front end 205 Insulating layer 205b Insulating layer 207 to be removed

Claims (7)

In the method of removing the insulating layer in the insulated wire, removing the insulating layer on the front end side of the insulated wire in which the cut is formed in the circumferential direction in the insulating layer near the front end,
An insulating layer removing device, wherein a plurality of claw members each having a toe formed so as to be able to enter the notch are disposed so that the toes face each other so that the insulated wire can be sandwiched therebetween, and are closed. The plurality of claw members are closed by a spring, while the insulated wire is pushed against the spring from the front end between the claw tips when the claw members are closed. Using an insulating layer removal device configured to open between each other,
The insulated wire, pushing to advance toward between the front end of the toe mutually the incision, in such a manner that the pawl tip position and Eru Yue position, then pulled back, during the course pullback after the pushing body The toe is inserted into the notch by the action of the spring and engaged with the rear end of the insulating layer to be removed located on the front end side, and in this engaged state, the insulated wire is pulled back to insulate the object to be removed. A method for removing an insulating layer in an insulated wire, wherein the layer is removed.   Among the claw members, at least the rearward facing surface of the portion near the toe that receives the pushing force by the front end of the insulated wire is directed forward by the front end being pushed forward by a combination of the rearward facing surfaces of a plurality of claw members. The method for removing an insulating layer in an insulated wire according to claim 1, wherein the insulating layer is formed in a tapered shape.   The insulating layer removing device is provided with guide means for pushing the front end of the insulated wire between the toes when closed, and the insulated wire is guided by the guide means and pushed. The method for removing an insulating layer in an insulated wire according to claim 1, wherein the insulating layer is removed.   The insulating layer removing device is provided with a stopper that abuts the front end of the insulated wire to be pushed so that a predetermined pushing stroke can be obtained when the insulated wire is pushed. The method for removing an insulating layer in an insulated wire according to claim 1, wherein the insulating layer is contacted.   The said claw member is provided with two facing, and is pinned so that it may rock | fluctuate around the mutually parallel axis | shaft, The any one of Claims 1-4 characterized by the above-mentioned. Of removing the insulating layer in the insulated wire of the present invention. Insulation used to remove the insulation layer on the front end side of the insulation wire that has been cut in the circumferential direction in the insulation layer near the front end, with the cut formed in the circumferential direction. A layer removal device,
A plurality of claw members having toes that are formed so as to be able to enter the notch are provided so as to close each other with the toes facing each other so that the insulated wire can be sandwiched between the claw members, The insulated wires are pushed against the spring from the front end between the toes when closed by the spring, so that the toes are opened. A claw member device comprising a stopper, and when the insulated wire is pushed between the toes, a notch is provided at a position where the notch exceeds the toe position and the front end is applied. An insulating layer removing apparatus. The insulating layer removing device according to claim 6, further comprising guide means for guiding and pushing the front end of the insulated wire between the toes.

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