JP2015035351A - Production method of electric wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire with a terminal capable of reducing load of twisting work of an insulation electric wire in wiring without using a large production device.SOLUTION: A tool 10 for mark is attached to a part of an insulation coating 920 near a first end 93 of an insulation electric wire 9 on which a reference line 99 is formed, in a state that a first mark 11 is positioned along the reference line 99. Then a first terminal 110 is connected to the first end 93 of the insulation electric wire 9 in a state that a second mark 12 points in a predetermined reference direction. Then, a second terminal 120 is connected to a second terminal 94 of the insulation electric wire 9 in a state that the reference line 99 points in the reference direction.

Description

  The present invention relates to a method of manufacturing a terminal-attached electric wire that can reduce the load of twisting work of an insulated electric wire during wiring.

  In a vehicle such as an automobile, an electric wire with a terminal includes an insulated wire that conducts electricity and terminals connected to both ends of the insulated wire. The terminal is directly connected to another conductive member such as a power source such as a battery, a metal body for grounding, or a terminal of various electrical components.

  In a terminal-equipped electric wire mounted on a vehicle, a crimp terminal connected by crimping to an end portion of an insulated wire is often employed. The terminal may be connected to the end of the insulated wire by welding such as ultrasonic welding. Moreover, a terminal may be connected to the edge part of an insulated wire by combined use with the crimping | compression-bonding with respect to the part of insulation coating, and the welding with respect to a core wire.

  And the insulated wire and another electrically-conductive member are electrically connected through a terminal by connecting the contact part which is a part of terminal of an electric wire with a terminal to another electrically-conductive member. Examples of means for connecting the contact portion of the terminal and the other conductive member include bolt tightening or nut tightening.

  By the way, when the electric wire with terminal is attached to the vehicle, the direction of the terminal connected to each end of the electric wire with terminal and the direction of the connecting end of the other conductive member corresponding to each terminal are not matched. It is necessary to twist the insulated wire of the attached wire.

  At this time, the thicker the insulated wire in the electric wire with terminal, the more difficult is the work of connecting each terminal and another conductive member while twisting the insulated wire, requiring an excessive force.

  Therefore, as an effective means to reduce the load of twisting work of the electric wire with terminal, the terminal is insulated in a direction that matches the direction of the connection end of the other conductive member to be connected so that the insulated wire does not have to be twisted. It is conceivable to connect to the end of the electric wire.

  For example, the wire harness manufacturing apparatus disclosed in Patent Document 1 includes two holding means for holding both ends of an insulated wire, two turning means for turning the two holding means around the axis of the insulated wire, and a rotating device. Control means for controlling the operation of the moving means is provided. In this case, the first terminal and the second terminal are respectively crimped to both ends of the insulated wire in a state where the vertical directions do not match.

Japanese Patent No. 4943073

  Use of a large-scale manufacturing apparatus such as the wiring harness manufacturing apparatus disclosed in Patent Document 1 causes an increase in the manufacturing cost of the terminal-attached electric wire, which is against the demand for cost reduction. Therefore, it is desired that the electric wire with terminal for reducing torsion can be made more easily.

  The objective of this invention is providing the electric wire with a terminal which can reduce the load of the twisting operation | work of the insulated wire at the time of wiring, without using a large-scale manufacturing apparatus.

  The electric wire manufacturing method with a terminal which concerns on a 1st aspect is a method of manufacturing an electric wire with a terminal using the terminal connection apparatus which connects a terminal to the edge part of an insulated wire, and includes each process shown below. In the first step, a marked curved portion is formed on a portion of the insulating coating near the first end of the insulated wire in which a linear reference line along the longitudinal direction is formed over the entire length of the surface of the insulating coating. It is the process of attaching the tool with a mark which has. The curved portion with a mark is formed in an arc shape or an annular shape along the outer peripheral surface of the insulating coating in the insulated wire, and a first mark and a second mark are formed at two predetermined points of the arc along the outer peripheral surface of the insulating coating. Part. A 1st process is a process of attaching the said marking tool with the said 1st mark along the said reference line. The second step is to set the first end of the insulated wire to the terminal connection device in a state where the second mark of the marking tool faces a predetermined reference direction. It is a step of connecting a first terminal to the first end portion. In the third step, the second terminal of the insulated wire is set to the second end of the insulated wire by setting the second end of the insulated wire to the terminal connecting device with the reference line facing the reference direction. It is a process of connecting.

  The electric wire manufacturing method with a terminal concerning the 2nd mode is one mode of an electric wire manufacturing method with a terminal concerning the 1st mode. In the method for manufacturing a terminal-attached electric wire according to the second aspect, the marking tool includes a pair of semi-annular portions, a connecting portion, an elastic member, and a pair of knobs. The pair of semi-annular portions constitute a part of the marked curved part and the remaining part, and are formed in an arc shape along each of the part and the remaining part of the outer peripheral surface of the insulating coating. And become circular. The connecting portion connects the pair of semi-annular portions in a displaceable manner between a closed state in which the pair of semi-annular portions are combined in an annular shape and an open state in which at least one end of each pair is separated. The elastic member applies an elastic force that maintains the closed state to the pair of semi-annular portions. The pair of knobs are connected to the pair of semi-annular parts or the connecting part, and are picked and brought close to each other so as to resist the elastic force of the elastic member from the closed state to the pair of semi-annular parts. Displace to open state. Each of the first mark and the second mark is formed on at least one of the pair of semi-annular parts, and the step of attaching the mark attaching tool includes gripping the pair of pick parts and the pair of half marks. It is a step of sandwiching the portion of the insulation coating near the first end of the insulated wire between the annular portions.

  The electric wire manufacturing method with a terminal concerning the 3rd mode is one mode of an electric wire manufacturing method with a terminal concerning the 1st mode. In the method for manufacturing a terminal-attached electric wire according to the third aspect, the mark-added curved portion of the mark-applying tool is formed in an arc shape along the outer peripheral surface of the insulating coating over a range exceeding at least a half circumference and a series of elastically deformable pieces It is an arc-shaped elastic member. And the process of attaching the said tool with a mark is a process of fitting the part of the said insulation coating near the 1st end part of the said insulated wire inside the said arc-shaped elastic member.

  The electric wire manufacturing method with a terminal concerning the 4th mode is one mode of an electric wire manufacturing method with a terminal concerning either of the 1st mode to the 3rd mode. In the method of manufacturing a terminal-attached electric wire according to the fourth aspect, an anti-slip portion having a larger coefficient of friction with the insulating coating than other portions is provided on an inner surface of the curved portion with a mark that is in contact with the outer peripheral surface of the insulating coating. Is formed.

  The electric wire manufacturing method with a terminal concerning the 5th mode is one mode of an electric wire manufacturing method with a terminal concerning either of the 1st mode to the 4th mode. In the electric wire manufacturing method with a terminal concerning the 5th mode, a plurality of scales which become candidates chosen as the above-mentioned 1st mark are formed in the above-mentioned curved part with a mark.

  In each of the above aspects, a linear reference line extending in the longitudinal direction is formed on the surface of the insulating coating in the insulated wire. Such an insulated wire can be easily made by using different colors of synthetic resin in the insulating coating reference line portion and other portions in the extrusion molding of the insulating coating.

  In each of the above aspects, the first mark and the second mark of the marking tool are such that the angle formed by the marking tool in the circumferential direction of the insulated wire in the state where the marking tool is attached to the insulated wire Each terminal is formed so as to correspond to the difference in direction between the two terminals when connected to the other conductive member of the connection destination. The first end of the insulated wire is aligned with the reference line of the insulated wire and the reference direction of the terminal connecting device, respectively, with the first mark and the second mark of the marking tool attached to the insulated wire. It is set in the terminal connection device in the state. On the other hand, the second end of the insulated wire is set in the terminal connection device in a state where the reference line of the insulated wire is aligned with the reference direction of the terminal connection device. Thereby, the electric wire with a terminal which does not need the twisting operation | work of the insulated wire at the time of wiring, or hardly needs it can be manufactured. In this case, the marker-equipped tool is a tool having a simple structure as compared with a large-scale manufacturing apparatus such as the wire harness manufacturing apparatus disclosed in Patent Document 1.

  As described above, in each of the above aspects, it is possible to provide a terminal-attached electric wire that can reduce the load of twisting work of the insulated electric wire during wiring without using a large-scale manufacturing apparatus. Become.

  Further, in the second aspect, the step of attaching the marking tool is a step of sandwiching a portion of the insulating coating near the first end of the insulated wire between the pair of semi-annular portions while picking the pair of knobs. . In this case, when the force for picking the picking portion is removed, the marking tool maintains the closed state of the pair of semi-annular portions by the elastic force of the elastic member, and remains on the insulated wire. Therefore, it becomes possible to easily attach the marking tool to the insulated wire.

  Moreover, according to the 3rd aspect, the curved part with a mark of a tool with a mark is a series of arc-shaped elastic members which are formed in the shape of an arc, and can be elastically deformed. And the process of attaching this tool with a mark is a process of fitting the part of the insulation coating near the 1st end part of an insulated wire inside the arc-shaped elastic member. Also in this case, it becomes possible to easily attach the mark-equipped tool to the insulated wire. Furthermore, the structure of the marking tool can be further simplified.

  Moreover, according to the 4th aspect, the anti-slip | skid part with a larger friction coefficient between insulation coatings than the other part is formed in the inner surface which touches the outer peripheral surface of insulation coating in a curved part with a mark. In this case, it is possible to avoid the inconvenience that the first mark is displaced from the reference line due to the external force applied to the mark attaching tool.

  Moreover, according to the 5th aspect, the some scale used as the candidate selected as a 1st mark is formed in the bending part with a mark. In this case, the versatility of the marking tool increases. That is, one marker-equipped tool can be shared for the production of a plurality of terminal-equipped electric wires having different differences in orientation between both terminals in a wired state.

It is a perspective view of the marking tool 10 which concerns on 1st Embodiment. It is a side view of the tool 10 with a mark. It is the schematic showing a mode that the tool 10 with a mark is attached to an insulated wire. It is a perspective view of the insulated wire and the marking tool 10 attached to the insulated wire. It is a side view of the process of crimping | bonding a terminal to the 1st end part of an insulated wire. It is a top view of the process of crimping | bonding a terminal to the 1st end part of an insulated wire. It is a top view of the process of crimping | bonding a terminal to the 2nd end part of an insulated wire. It is a schematic plan view of the electric wire 1 with a terminal manufactured using the tool 10 with a mark. It is a perspective view of 10 A of markers with a mark which concerns on 2nd Embodiment. It is a top view of tool 10B with a mark which concerns on 3rd Embodiment. It is the schematic showing a mode that the tool 10B with a mark is attached to the insulated wire 9. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

<First Embodiment>
First, the configuration of the marking tool 10 according to the first embodiment and the insulated wire 9 to which the marking tool 10 is attached will be described with reference to FIGS. The marker-equipped tool 10 is a tool used to manufacture a terminal-attached electric wire that can reduce the load of twisting work of an insulated electric wire during wiring. The terminal-attached electric wire 1 manufactured using the marking tool 10 is mounted on a vehicle such as an automobile.

<Insulated wire>
As shown in FIG. 3, the insulated wire 9 to which the marking tool 10 is attached has a core wire 910 that is a long conductor and an insulating coating 920 that is an insulator that covers the periphery of the core wire 910. It is an electric wire.

  The insulated wire 9 is, for example, a thick wire used for connection between an automobile battery and another conductive member.

  The core wire 910 is a stranded wire in which a plurality of strands made of thin conductors are twisted together. However, it is also conceivable that the core wire 910 is a single wire.

  The first end 93 of the insulated wire 9 to which the first terminal 110 is attached has a state in which the insulation coating 920 has been peeled off from the periphery of the core wire 910 of a certain length in advance, that is, the core wire 910 of a certain length is It is processed into a state extending from the insulating coating 920.

  Similarly, the second end portion 94 of the insulated wire 9 to which the second terminal 120 is attached is also in a state where the insulation coating 920 has been peeled from the periphery of the core wire 910 of a certain length in advance, that is, for a certain length. The core wire 910 is processed so as to extend from the insulating coating 920.

  Hereinafter, the core wire 910 extending from the end of the insulation coating 920 at the first end portion 93 and the second end portion 94 of the insulated wire 9 is referred to as a bare core wire portion 91. In addition, a portion of the insulation coating 920 of the insulated wire 9 in a certain range (a range of a length of several millimeters to a few dozen millimeters) of the first end portion 93 and the second end portion 94 is referred to as a covering end portion 92.

  The insulating coating 920 is a synthetic resin member that covers the periphery of the core wire 910. The insulating coating 920 is formed on the surface of the core wire 910 by, for example, extrusion molding. A reference line 99 is formed on the insulating coating 920.

  The reference line 99 is a straight line formed on the surface of the insulating coating 920 and extending along the longitudinal direction of the insulated wire 9. The reference line 99 is formed over the entire length of the insulating coating 920.

  For example, in the extrusion molding of the insulating coating 920, the reference line 99 is formed by using different colors of synthetic resin in a portion of the insulating coating 920 and the portion other than the reference line 99. It is also conceivable to form the reference line 99 by drawing a line directly on the surface of the insulating coating 920 with a marker or the like.

  In the terminal-attached electric wire 1, the core wire 910 of the insulated electric wire 9 is, for example, a metal wire whose main component is aluminum. On the other hand, the insulation coating 920 including the reference line 99 portion and the portion other than the reference line 99 of the insulated wire 9 is a synthetic resin member mainly composed of polyethylene, vinyl chloride, polyamide nylon, or the like. It is also conceivable that the core wire 910 is a metal wire mainly composed of copper.

<Equipment with mark>
The marking tool 10 includes a curved portion 200 with a mark including a pair of semi-annular portions 20, a connecting portion 30, an elastic member 40, and a pair of knobs 50. Further, each of the first mark 11 and the second mark 12 is formed on at least one of the pair of semi-annular portions 20. In the present embodiment, a plurality of scales 13 are formed on the pair of semi-annular portions 20 in the marking tool 10.

<Indicator: Semi-annular part>
Each of the pair of semi-annular portions 20 is formed in an arc shape along each of the part and the remaining part of the outer peripheral surface of the insulating coating 920 of the insulated wire 9. Then, the pair of semi-annular portions 20 are formed in an annular shape when they are joined together with their inner side surfaces 21 facing each other.

  The pair of semi-annular portions 20 constitutes a marked curved portion 200 formed in an annular shape along the outer peripheral surface of the insulating coating 920 in the insulated wire 9. The pair of semi-annular portions 20 are, for example, synthetic resin or wooden members.

  In the present embodiment, as shown in FIG. 1, the first mark 11 is formed on one side surface 22 of the pair of semi-annular portions 20. The second mark 12 is formed from the side surface 22 to the outer side surface 23 of the semi-annular portion 20. A plurality of scales 13 that are candidates for selection as the first mark 11 are formed on the side surfaces 22 of the pair of semi-annular portions 20.

  The positions of the first mark 11 and the second mark 12 of the marking tool 10 are the positions when the first terminal 110 and the second terminal 120 on both ends of the terminal-attached electric wire 1 are connected to other conductive members to be connected. The directions of the one terminal 110 and the second terminal 120 are examined in advance, and are determined based on the result. That is, the first mark 11 and the second mark 12 of the marking tool 10 are such that the angle formed in the circumferential direction of the insulated wire 9 with the marking tool 10 attached to the insulated wire 9 is the same as that of the terminal-equipped wire 1. The first terminal 110 and the second terminal 120 at both ends are formed so as to correspond to the difference in direction between the first terminal 110 and the second terminal 120 when connected to another conductive member to be connected.

  This embodiment is an example in which the difference in direction between the first terminal 110 and the second terminal 120 when connected to another conductive member to be connected is 90 degrees. Therefore, in the state where the marking tool 10 is attached to the insulated wire 9, the angle formed by the first mark 11 and the second mark 12 in the circumferential direction of the insulated wire 9 is 90 degrees.

  The plurality of scales 13 are marks that are candidates to be selected as the first marks 11. That is, the first mark 11 is one selected from a plurality of scales 13. In each figure, for the sake of convenience, the first mark 11 selected from the plurality of scales 13 is represented by a thicker line than the other scales 13.

  In the present embodiment, the scale 13 is provided in increments of 15 degrees.

  Each of the 1st mark 11, the 2nd mark 12, and the scale 13 is described by a line or a point, for example.

  Further, the first mark 11 and other scales 13 may be formed on a surface other than the side surface 22 of the semi-annular portion 20. Specifically, the surface other than the side surface 22 is the outer surface 23 of the semi-annular portion 20.

  Similarly, the second mark 12 may also be formed in a portion other than the portion from the side surface 22 to the outer surface 23 of the semi-annular portion 20.

<Equipment with mark: connecting part>
The connecting portion 30 is a portion that connects the pair of semi-annular portions 20 so as to be displaceable between a closed state in which they are annularly combined and an open state in which at least the distal end portion 24 is separated.

  As shown in FIGS. 1 and 2, the connecting portion 30 includes a first connecting base portion 31, a second connecting base portion 32, and a connecting pin 33.

  The first connection base portion 31 and the second connection base portion 32 are connected to each of the pair of semi-annular portions 20. Protrusions 320 are formed at both ends of the second connection base 32. In addition, a protrusion 310 that is accommodated between the protrusions 320 formed at both ends of the second connection base 32 is formed at an intermediate position of the first connection base 31.

  The connection pin 33 is a rod-shaped member that is passed through the holes of the protrusion 310 of the first connection base 31 and the protrusion 320 of the second connection base 32. The holes of the protrusion 310 of the first connection base 31 and the protrusion 320 of the second connection base 32 are communication holes that communicate along the linear direction.

  The connecting pin 33 connects the pair of semi-annular portions 20 connected to the first connecting base portion 31 and the second connecting base portion 32 in a relatively rotatable state. Thereby, the connection part 30 has connected a pair of semi-annular part 20 so that a displacement is possible between a closed state and an open state.

  The 1st connection base part 31 and the 2nd connection base part 32 are comprised by the same material as a pair of semi-annular part 20, for example.

  The connecting pin 33 is, for example, a metal rod-shaped member. It is also conceivable that the connecting pin 33 is a member made of a material other than a metal such as a synthetic resin.

  The first connection base portion 31, the second connection base portion 32, and the connection pin 33 are an example of a connection portion 30 that connects the pair of semi-annular portions 20. In addition, the connection part 30 which connects a pair of semi-annular parts 20 so that a displacement between an open state and a closed state is displaceable except the structure provided with said 1st connection base 31, the 2nd connection base 32, and the connection pin 33. A case having a structure is also conceivable.

<Equipment with mark: elastic member>
The elastic member 40 is a member that applies an elastic force that maintains the closed state to the pair of semi-annular portions 20.

  In the present embodiment, both end portions 41 of the elastic member 40 are fixed to a pair of knob portions 50 formed continuously to the pair of semi-annular portions 20, respectively. Therefore, the elastic force of the elastic member 40 acts on each of the pair of semi-annular portions 20 via each of the pair of knobs 50.

  For example, a groove 55 in which the both end portions 41 of the elastic member 40 are fitted is formed on the inner side surfaces 53 and 54 of each of the pair of knob portions 50 facing each other. Both end portions 41 of the elastic member 40 are fixed in the grooves 55 of each of the pair of knobs 50.

  As the elastic member 40, for example, a metal spring or rubber is used. Various springs such as a coil spring, a leaf spring, a spiral spring, or a torsion bar can be considered as the metal spring.

<Equipment with mark: knob part>
The pair of knobs 50 includes a first knob 51 and a second knob 52. Each of the first knob 51 and the second knob 52 is continuous with one and the other of the pair of semi-annular parts 20. Therefore, the force applied to the pair of knobs 50 acts on the pair of semi-annular parts 20.

  In addition, when the connection part 30 which connects a pair of semi-annular parts 20 displaceably has a structure different from the structure provided with the 1st connection base part 31, the 2nd connection base part 32, and the connection pin 33, a pair of knob part 50 It is also conceivable that is connected to the connecting portion 30. In this case, the force applied to the pair of knobs 50 acts on the pair of semi-annular parts 20 via the connecting part 30.

  And a pair of knob | pick part 50 displaces a pair of semi-annular part 20 from a closed state to an open state against the elastic force of the elastic member 40 by picking and approaching mutually.

  A pair of knob | pick parts 50 is comprised with the same material as a pair of semi-annular part 20, for example.

<Method for manufacturing electric wire with terminal>
Then, a part of process of the electric wire manufacturing method with a terminal using the marking tool 10 is demonstrated, referring FIGS.

  FIG. 3 is a schematic view showing a state in which the marker-equipped tool 10 is attached to the insulated wire 9. FIG. 4 is a perspective view of the marking tool 10 attached to the insulated wire 9 in a state where the first mark 11 and the reference line 99 are aligned.

  FIG. 5 is a schematic diagram illustrating a process of crimping the first terminal 110 to the insulated wire 9, and the insulated wire 9, the marking tool 10, and the terminal connecting device in a state before the insulated wire 9 is set in the terminal connecting device 6. 6 is a side view of FIG.

  6 and 7 are schematic views showing a process of crimping the first terminal 110 and the second terminal 120 to the insulated wire 9, respectively, with the insulated wire 9 in the state in which the insulated wire 9 is set in the terminal connection device 6, with markings. It is a top view of the lower mold 62 of the tool 10 and the terminal connection device 6. FIG. 8 is a schematic plan view of the completed electric wire 1 with a terminal.

  First, the first terminal 110, the second terminal 120, and the terminal connection device 6 used in the present embodiment will be described.

<First terminal and second terminal>
The first terminal 110 and the second terminal 120 are respectively provided with a cover crimping portion 130 and a core wire crimping portion 140 that can be crimped to a portion of the insulation coating 920 in the insulated wire 9 and the bare core wire portion 91 extending from the insulation coating 920. And a contact portion 150 connectable to the conductive member. In addition, the covering crimping part 130, the core wire crimping part 140, and the contact part 150 are formed in a line along the linear direction.

  The covered crimp portion 130 is a plate-like portion formed by bending, and forms a groove into which the covered end portion 92 of the insulated wire 9 is inserted before being crimped to the insulated wire 9. The coated crimp portion 130 is crimped to the coated end portion 92 by being bent along the periphery of the coated end portion 92 inserted inside the groove formed by the coated crimp portion 130. This groove is formed by a bottom plate part 131 and two covering caulking parts 132.

  The bottom plate portion 131 is a portion that supports the covered end portion 92 of the insulated wire 9 to which the first terminal 110 and the second terminal 120 are attached from one direction (downward). Further, the two covering caulking portions 132 are portions formed so as to rise from the bottom plate portion 131 to both sides of the covering end portion 92.

  The core wire crimping part 140 has the same structure as the coated crimping part 130. That is, the core wire crimping portion 140 has a groove formed by inserting the bare core wire portion 91 of the insulated wire 9 and the bottom plate portion 141 and the two core wire caulking portions 142. The core wire crimping part 140 is crimped to the bare core wire part 91 inserted inside the groove formed by the core wire crimping part 140.

  The contact part 150 is a flat part. For example, a hole 151 through which a bolt 83 for fixing to a connection partner is passed is formed in the flat contact portion 150.

<Terminal connection device>
Next, the terminal connection device 6 will be described. In the present embodiment, the terminal connection device 6 is a crimping device that crimps the first terminal 110 and the second terminal 120 to the first end portion 93 and the second end portion 94 of the insulated wire 9, respectively.

  The terminal connection device 6 includes, for example, an upper mold 61 and a lower mold 62 as shown in FIG. The upper mold 61 and the lower mold 62 are supported by a support mechanism (not shown) so that one or both of them can approach and be separated from each other.

  The upper die 61 has a molding surface 610 for crimping the coated crimping portion 130 and the core wire crimping portion 140 to the portion of the coated end portion 92 of the insulated wire 9 and the bare core wire portion 91, respectively.

  The lower mold 62 includes a support surface 620 that supports the first terminal 110 or the second terminal 120 from the bottom plate portions 131 and 141 side of the first terminal 110 or the second terminal 120. The operation of the terminal connection device 6 will be described later.

<Method for producing electric wire with terminal: first step>
The first step in the method for manufacturing a terminal-attached electric wire will be described with reference to FIGS. The first step is a step of attaching the first mark 11 formed on the marking tool 10 in a state where the first mark 11 is aligned with the reference line 99 formed on the surface of the insulating coating 920 of the insulated wire 9.

  In the first step, first, the pair of knobs 50 of the marking tool 10 are picked to open the pair of semi-annular parts 20.

  And while adjusting the position so that the first mark 11 is along the reference line 99 of the insulated wire 9, the portion of the insulation coating 920 near the first end portion 93 of the insulated wire 9 is placed between the pair of semi-annular portions 20. Let them get caught.

  As a result, the marking tool 10 is attached to the insulated wire 9 with the first mark 11 and the reference line 99 being along.

<Method for producing electric wire with terminal: second step>
Next, the 2nd process in the manufacturing method of an electric wire with a terminal is explained, referring to FIGS.

  The 2nd process in the electric wire manufacturing method with a terminal is performed in the state where the 1st mark 11 of the tool 10 with a mark followed the reference line 99 of the insulated wire 9. FIG. In the second step, the first end of the insulated wire 9 is set by setting the first end portion 93 of the insulated wire 9 to the terminal connection device 6 with the second mark 12 facing a predetermined reference direction. In this step, the first terminal 110 is connected to the portion 93.

  The first terminal 110 is supported by the lower mold 62 at or before the start of the second process.

  Then, the insulated wire 9 to which the marking tool 10 is attached is supported in a state where the second mark 12 of the marking tool 10 faces the reference direction, and the covered end portion 92 of the insulated wire 9 at the first end portion 93 and the bare wire The core wire portion 91 is inserted into a groove formed by the covering crimp portion 130 and the core wire crimp portion 140, respectively.

  Thereafter, one or both of the upper mold 61 and the lower mold 62 of the terminal connection device 6 move in the direction in which they approach each other, so that the covering crimping part 130 and the core crimping part 140 in the first terminal 110 It is crushed between the mold 61 and the lower mold 62 and is crimped to the covering end portion 92 and the bare core wire portion 91, respectively.

  The reference direction is a direction determined in advance with reference to the terminal connection device 6. The reference direction in the present embodiment is a direction in which the support surface 620 of the lower mold 62 faces, more specifically, vertically upward.

<Method for producing electric wire with terminal: third step>
Next, the 3rd process in the manufacturing method of an electric wire with a terminal is explained, referring to FIG.

  In the third step in the method of manufacturing the electric wire with terminal, the second end 94 of the insulated wire 9 is set in the terminal connecting device 6 in a state where the reference line 99 is directed in the reference direction. This is a step of connecting the second terminal 120 to the end portion 94.

  The second terminal 120 is supported by the lower mold 62 at or before the start of the third step.

  Then, with the reference line 99 facing the reference direction, the covered end portion 92 and the bare core wire portion 91 of the insulated wire 9 at the second end portion 94 are formed into grooves formed by the covered crimp portion 130 and the core wire crimp portion 140, respectively. insert.

  Thereafter, one or both of the upper mold 61 and the lower mold 62 of the terminal connection device 6 move in the direction in which they approach each other, so that the covering crimping portion 130 and the core crimping portion 140 in the second terminal 120 are It is crushed between the mold 61 and the lower mold 62 and is crimped to the covering end portion 92 and the bare core wire portion 91, respectively.

  The electric wire with terminal 1 shown in FIG. 8 is an electric wire with terminal manufactured through the first step, the second step, and the third step.

  When the marking tool 10 in which the first mark 11 and the second mark 12 form an angle of 90 degrees is used, the difference in direction between the first terminal 110 and the second terminal 120 in the terminal-attached electric wire 1 is 90 degrees. The electric wire with terminal 1 is, for example, when the difference in angle between the connection end of the screwing portion 81 to which the first terminal 110 is attached and the connection end of the screwing portion 82 to which the second terminal 120 is attached is 90 degrees. It is valid. In this case, the 1st terminal 110 and the 2nd terminal 120 can be attached to the screwing part 81 and the screwing part 82, respectively, without twisting the electric wire 1 with a terminal.

  In addition, the connection means of the 1st terminal 110 and the 2nd terminal 120, the screwing part 81, and the screwing part 82 is bolting which uses the volt | bolt 83, for example. However, it is conceivable that the connecting means is a nut tightening.

<Effect>
A linear reference line 99 extending in the longitudinal direction is formed on the surface of the insulating coating 920 in the insulated wire 9. Such an insulated wire 9 can be easily made by using different colors of synthetic resin for the reference line 99 and other portions.

  The first mark 11 and the second mark 12 of the marking tool 10 are such that the angle formed by them in the circumferential direction of the insulated wire 9 with the marking tool 10 attached to the insulated wire 9 is the same as that of the terminal-equipped wire 1. Each of the first terminal 110 and the second terminal 120 at both ends is formed so as to correspond to the difference in the orientation of the first terminal 110 and the second terminal 120 when connected to another conductive member to be connected. In this case, the marking tool 10 is a tool having a simple structure.

  The first end portion 93 of the insulated wire 9 is such that the first mark 11 and the second mark 12 of the marking tool 10 attached to the insulated wire 9 are the reference line 99 and the terminal connection device 6 of the insulated wire 9. Are set in the terminal connection device 6 in a state of being matched to each of the reference directions. On the other hand, the second end portion 94 of the insulated wire 9 is set in the terminal connection device 6 in a state where the reference line 99 of the insulated wire 9 is aligned with the reference direction of the terminal connection device 6. Thereby, the electric wire 1 with a terminal which does not require the twisting operation | work of the insulated wire 9 at the time of wiring, or hardly needs it can be manufactured.

  As described above, it is possible to provide the terminal-attached electric wire 1 that can reduce the load of twisting work of the insulated electric wire 9 during wiring without using a large-scale manufacturing apparatus.

  Further, in the first step of attaching the marking tool 10, the portion of the insulating coating 920 near the first end portion 93 of the insulated wire 9 is sandwiched between the pair of semi-annular portions 20 while the pair of knobs 50 are picked. It is a process to make. In this case, the marking tool 10 maintains the closed state of the pair of semi-annular portions 20 by the elastic force of the elastic member 40 when the force to pick the knob 50 is removed, and remains on the insulated wire 9. Therefore, it becomes possible to easily attach the marking tool 10 to the insulated wire 9.

  The pair of semi-annular portions 20 is formed with a plurality of scales 13 that are candidates for selection as the first mark 11. In this case, the versatility of the marking tool 10 increases. That is, one marker-equipped tool 10 can be shared for manufacturing a plurality of terminal-attached electric wires having different directions in the first terminal 110 and the second terminal 120 in a wired state.

Second Embodiment
Next, with reference to FIG. 9, a marking tool 10A according to a second embodiment applicable to the method of manufacturing a terminal-attached electric wire according to the first embodiment will be described. The marking tool 10A is different from the marking tool 10 only in that a non-slip portion 70 is formed on the inner surface 21 of the pair of semi-annular portions 20.

  FIG. 9 is a schematic perspective view of the marking tool 10A. 9, the same components as those shown in FIG. 1 are denoted by the same reference numerals. Hereinafter, only differences between the marking tool 10A and the marking tool 10 will be described.

  A marking tool 10 </ b> A shown in FIG. 9 includes a marked curved portion 200 including a pair of semi-annular portions 20, a connecting portion 30, an elastic member 40, a pair of knobs 50, and a non-slip portion 70.

  The anti-slip portion 70 is formed on the inner side surface 21 in contact with the outer peripheral surface of the insulating coating 920 of the insulated wire 9 in the pair of semi-annular portions 20.

  The anti-slip part 70 is a part having a larger coefficient of friction with the insulating coating 920 than parts other than the anti-slip part 70.

  As the non-slip portion 70, for example, an elastic member mainly composed of elastomer, rubber, foamed resin, or the like can be considered. Further, by providing irregularities on the surface of the inner side surface 21 of the semi-annular portion 20, the friction coefficient with the insulating coating 920 can be increased. In this case, the anti-slip portion 70 is unevenness formed on the surface of the inner side surface 21 of the semi-annular portion 20.

  In the marking tool 10A, it is possible to avoid the inconvenience that the first mark 11 is displaced from the reference line 99 due to an external force applied to the marking tool 10A.

  Further, by forming the anti-slip portion 70 on the inner side surface 21 of the pair of semi-annular portions 20, the width of the diameter of the insulated wire to which the marking tool 10A can be applied can be increased. That is, the versatility of the marking tool 10A can be enhanced.

<Third Embodiment>
Next, a marking tool 10B according to a third embodiment applicable to the method for manufacturing a terminal-attached electric wire of the present invention will be described with reference to FIGS. The marking tool 10B is different from the marking tools 10 and 10A in that the marked curved portion 200 is an elastic member formed in an arc shape.

  The marking tool 10B is a series of elastically deformable members (arc-shaped elastic members) formed in an arc shape along the outer peripheral surface of the insulating coating 920 in the insulated wire 9 over a range exceeding at least a half circumference. Similar to the mark-equipped curved portion 200 of the mark-equipped tool 10, the first mark 11 and the second mark 12 are formed on the mark-marked tool 10 </ b> B. Furthermore, a plurality of scales 13 are formed on the marking tool 10 </ b> B, and the first mark 11 is one selected from the plurality of scales 13. That is, the entire marking tool 10B is an example of a curved portion with a mark.

  The marking tool 10B has a series of inner side surfaces 211 along the outer peripheral surface of the insulating coating 920 of the insulated wire 9 over a range exceeding at least a half circumference. Further, the marking tool 10B is, for example, an elastically deformable synthetic resin or metal member. It is also conceivable that the marking tool 10B is a member of a rubber-based material such as an elastomer or rubber.

  The first mark 11 is formed on the side surface 212 of the marking tool 10B. The second mark 12 is formed from the side surface 212 to the outer surface 213 of the arcuate main body 210. The scale 13 is formed on the side surface 212 of the marking tool 10B.

  The 1st mark 11 and the scale 13 may be formed in surfaces other than the side surface 212 of the marking tool 10B. Moreover, the 2nd mark 12 may be formed in parts other than the part from the side surface 212 to the outer surface 213 of the marking tool 10B. This is the same as in the first embodiment or the second embodiment.

  FIG. 11 is a schematic diagram in the case where a mark-equipped tool 10B is applied in place of the mark-equipped tool 10 in the first step of the first embodiment. That is, it is a schematic perspective view showing a state in which the marking tool 10B is attached to the insulated wire 9.

  In the first step in which the marking tool 10B is applied, the marking tool 10B is elastically deformed, and the position of the first marking 11 is adjusted so as to follow the reference line 99 of the insulated wire 9, while the marking tool 10B. A portion of the insulating coating 920 near the first end portion 93 of the insulated wire 9 is fitted inside.

  As a result, the marking tool 10 </ b> B is attached to the insulated wire 9 with the first mark 11 and the reference line 99 being along.

  In this case, it is easy to elastically deform the marking tool 10B and attach it to the insulated wire 9. Furthermore, the structure of the marking tool 10B is simpler than the marking tools 10 and 10A.

<Application example>
For example, it is conceivable that the second mark 12 is represented by a thicker line or a mark having a different shape such as a shape or a color as compared with the first mark 11 and the other scales 13. In this case, the first mark 11 and other scales 13 and the second mark 12 are less likely to be confused, and the direction in which the first terminal 110 and the second terminal 120 are crimped can be seen at a glance. Therefore, it is possible to improve the efficiency of the operations in the first process, the second process, and the third process described above.

  Further, in a plurality of types of electric wires, a direction in which the first terminal 110 is connected to the reference line 99 is determined in advance for each electric wire, and a scale 13 may be provided as an index thereof.

  Moreover, the case where the marking tool 10, 10A, 10B is formed with a transparent or colored translucent material is also considered. In this case, the work of bringing the first mark 11 and the second mark 12 along the reference line 99 is facilitated. Moreover, when the marking tool 10A, 10B is transparent or colored and semi-transparent, the first mark 11 and the second mark 12 may be formed on the inner side surface in contact with the outer peripheral surface of the insulating coating 920.

  Moreover, the case where the 1st terminal 110 and the 2nd terminal 120 are terminals which do not have a crimping | compression-bonding part is also considered. In this case, it is conceivable that a welding device for welding the bare core wire portion 91 of the insulated wire 9 to a part of the terminal by ultrasonic welding is used as the terminal connection device 6.

  Further, the order of the second step and the third step may be switched.

  In addition, the electric wire manufacturing method with a terminal which concerns on this invention can combine each embodiment and application example which were shown above freely within the range of the invention described in each claim, or each embodiment and application example. It is also possible to configure by appropriately modifying or omitting a part.

DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 6 Terminal connection apparatus 9 Insulated electric wire 10, 10A, 10B Marking tool 11 1st mark 12 2nd mark 13 Scale 20 Semi-annular part 21 Inner side surface 22 Side surface 23 Outer side surface 24 Tip part 30 Connection part 31 1st Connection base 32 Second connection base 33 Connection pin 40 Elastic member 41 (both ends of elastic member) 50, 51, 52 Knob 53, 54 Inner surface 55 Groove 61 Upper mold 62 Lower mold 70 Non-slip part 81, 82 Screwed portion 83 Bolt 91 Bare core wire portion 92 Covered end portion 93 First end portion 94 Second end portion 99 Reference line 110 First terminal 120 Second terminal 130 Cover crimp portion 131 Bottom plate portion 132 Cover crimp portion 140 Core wire crimp portion 141 Bottom plate part 142 Core caulking part 150 Contact part 151 Hole 200 Marked curved part 210 Arc-shaped main body part 211 Inner side face 212 Side face 2 3 outer surface 214 distal end 310 and 320 projections 610 forming surface 620 supporting surface 910 wire 920 insulation coating

Claims (5)

A terminal-attached wire manufacturing method for manufacturing a terminal-attached wire using a terminal connection device for connecting a terminal to an end of an insulated wire,
A linear reference line extending along the longitudinal direction on the surface of the insulating coating is formed over the entire length of the insulating coating near the first end of the insulated wire, and on the outer peripheral surface of the insulating coating in the insulated wire. A marking tool having a curved portion with a mark formed with a first mark and a second mark at two predetermined points of the arc formed along an arc shape or annular shape along the outer peripheral surface of the insulating coating, A process of mounting in a state along the reference line;
By setting the first end of the insulated wire to the terminal connection device in a state where the second mark of the marking tool faces a predetermined reference direction, the first end of the insulated wire is set to the first end of the insulated wire. Connecting the first terminal;
Connecting the second terminal to the second end of the insulated wire by setting the second end of the insulated wire to the terminal connecting device in a state where the reference line faces the reference direction. An electric wire manufacturing method with a terminal including. It is a manufacturing method of the electric wire with a terminal according to claim 1,
The marking tool is:
A pair of semi-annular portions that constitute a part of the curved portion with marks and the remaining portion, and are formed in an arc shape along each of the outer peripheral surface of the insulating coating and the remaining portion, and are annularly formed. And
A connecting portion that connects the pair of semi-annular portions so as to be displaceable between a closed state in which they are combined in an annular shape and an open state in which at least one end of each pair is separated;
An elastic member that applies an elastic force to maintain the closed state with respect to the pair of semi-annular portions;
A pair of semi-annular portions or a connecting portion connected to the pair of semi-annular portions, and a pair of paired semi-annular portions that displace the pair of semi-annular portions from the closed state to the open state against the elastic force of the elastic member. A knob, and
Each of the first mark and the second mark is formed on at least one of the pair of semi-annular parts,
The step of attaching the marking tool is a step of sandwiching the portion of the insulating coating near the first end of the insulated wire between the pair of semi-annular portions while pinching the pair of knobs. Electric wire manufacturing method. It is a manufacturing method of the electric wire with a terminal according to claim 1,
The mark-added curved portion of the mark-applying tool is a series of arc-shaped elastic members that are formed in an arc shape along the outer peripheral surface of the insulating coating and can be elastically deformed over a range exceeding at least a half circumference.
The step of attaching the marking tool is a method of manufacturing a terminal-attached electric wire, which is a step of fitting the portion of the insulating coating near the first end of the insulated wire inside the arc-shaped elastic member. It is a manufacturing method of the electric wire with a terminal given in any 1 paragraph of Claims 1-3,
The terminal-attached electric wire manufacturing method, wherein a non-slip portion having a larger coefficient of friction with the insulating coating than other portions is formed on an inner surface of the curved portion with marks that is in contact with the outer peripheral surface of the insulating coating. It is a manufacturing method of the electric wire with a terminal given in any 1 paragraph of Claims 1-4,
The method for manufacturing a terminal-attached electric wire, wherein the mark-attached curved portion is formed with a plurality of scales that are candidates for selection as the first mark.

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