JP2012069334A - Method of manufacturing conductive junction terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a conductive junction terminal capable of joining a conductor wire bundle in a terminal in a uniform state from the outer peripheral side to the central portion, with a reduced cost.SOLUTION: The method of manufacturing a conductive junction terminal includes a conductor wire bundle 2 in which a plurality of conductor wires L having an insulating cover are bundled and a terminal device 10 having a storing part 12 for storing the conductor wire bundle 2, with the conductor wire bundle 2 stored in the storing part 12 electrically joined to the terminal device 10. It includes a first step for storing the conductor wire bundle 2 in the storing part 12 of the terminal device 10, a second step in which the terminal device 10 is electrified with a high frequency current so that the insulating cover of the conductor wire L is melted by induction heating, and a third step for caulking the terminal device 10 together with the conductor wire bundle 2. Thanks to the skin effect of the conductor wires L under induction heating, not only the outer peripheral side of the conductor wire bundle 2 but also the insulating cover of the conductor wire L positioned at the central portion are more surely melted.

Description

  The present invention relates to a method for manufacturing a conductive joint terminal obtained by conductively bonding a terminal tool to a conductive wire having an insulating coating.

  Conventionally, as shown in Patent Document 1, for example, a fusing (resistance welding) process is performed as a method for manufacturing a terminal obtained by conductively joining a terminal tool to a conductive wire having an insulating coating. In this fusing treatment, a metal terminal attached to a bundle of conductive wires having an insulating coating is caulked with a pair of electrode members. In this state, by passing an electric current between the electrode members, the insulation coating is carbonized and melted by the heat generated by the terminal tool (Joule heat), thereby forming a terminal (terminal) in which the terminal tool and the conductor are joined in a conductive state. To do.

  That is, in the conventional fusing treatment, a terminal tool is sandwiched from the outside by a pair of electrode members, and a current is passed in that state, so that heat is applied to the inner wire bundle from the outside of the terminal tool. Furthermore, in such a fusing process, since a current flows from a portion in contact with the electrode member in the terminal tool, the heating of the wire bundle spreads from there. For this reason, heating to the center of the conductor bundle is not sufficiently performed, and the covering of the conductor at a position close to the center of the conductor bundle may not be sufficiently melted. As a result, the sludge (carbonized product) generated by melting the insulation coating cannot be sufficiently discharged to the outside of the terminal, the sludge remains in the terminal, and sufficient conductivity of the terminal cannot be secured. There was a fear.

  Further, in the conventional fusing process, if the number of conducting wires is large, it takes time to transfer heat from the outer peripheral side of the conducting wire bundle to the central portion, and thus the conducting wire bundle may not be heated uniformly in the radial direction. For this reason, it is necessary to lengthen the energization time in order to allow heat to reach the center of the conductor bundle. In this case, if the thickness of the terminal tool is small, the terminal tool may be dissolved depending on the energization time and temperature. Therefore, it is necessary to increase the thickness of the terminal tool in accordance with the number of conductive wires. This may lead to an increase in cost and weight of parts.

  Moreover, since the electrode member used for the conventional fusing process presses and crimps the terminal tool in the energized state, it is necessary to use an expensive material such as tungsten having high conductivity and high heat resistance. There is. This contributes to an increase in the cost of the terminal manufacturing apparatus and the terminal manufactured thereby.

JP 2003-153505 A

  The present invention has been made in view of the above points, and the object thereof is to conduct conductive bonding in a uniform state from the outer peripheral side to the center of the conductor bundle, and effectively prevent sludge from remaining in the terminals. An object of the present invention is to provide a method for manufacturing a conductive junction terminal that can be manufactured at a reduced cost.

  The present invention for solving the above-mentioned problems is a terminal tool having a conductor bundle (2) formed by bundling a plurality of conductor wires (L) having an insulating coating, and a housing part (12) for housing the conductor bundle (2) ( 10), and a method of manufacturing a conductive joint terminal (1), wherein the conductor bundle (2) and the terminal tool (10) housed in the housing part (12) are electrically joined, 10) The first step (ST1) for housing the wire bundle (2) in the housing part (12) and the terminal tool (10) are energized with a high-frequency current, and the insulation coating of the wire (L) is melted by induction heating. And a third step (ST3) of crimping the terminal tool (10) together with the conductor bundle (2).

  Generally, when an induction coil is installed around an object to be heated such as a conductive metal and a high frequency current (alternating current) is passed through the induction coil, the high frequency magnetic flux generated by the high frequency current penetrates the object to be heated. A high-density current (eddy current) is induced, whereby the inside of the object to be heated is heated from the surface side. That is, a phenomenon (induction heating) occurs in which an eddy current is induced in the object to be heated by the induction coil and the object to be heated is heated. Here, the eddy current tends to become stronger as it approaches the surface of the object to be heated, and becomes exponentially weaker (skin effect) as it goes inside.

  And according to the manufacturing method of the electrically conductive junction terminal concerning this invention, each conducting wire of the conducting wire bundle accommodated in the terminal tool is heated by induction heating by supplying a high frequency current to the terminal tool. Therefore, the surface effect of each conductor can be effectively heated by the skin effect of each conductor of the conductor bundle, and the conductor bundle can be uniformly heated from the outer peripheral side to the center side. Thereby, since the temperature difference in the radial direction can be eliminated in the heating of the conductor bundle, the insulating coating of the conductor located not only on the outer peripheral side of the conductor bundle but also in the center can be surely melted. Moreover, since the discharge | emission of the sludge outside a terminal can be accelerated | stimulated by heating the center part of a conducting wire bundle effectively, it can suppress that a sludge remains in a terminal.

  Moreover, according to the manufacturing method of the conductive junction terminal concerning this invention, since the terminal tool for accommodating a conductor bundle functions as a member (induction coil) for raising induction heating to each conductor of a conductor bundle, induction heating is carried out. A dedicated jig is not required. Furthermore, the terminal tool used to cause induction heating can be caulked together with the wire bundle after that, so that each wire of the wire bundle can be effectively prevented from being separated, and the wire bundle is securely joined. Can do.

  Further, in the above-described method for manufacturing a conductive junction terminal, the high-frequency current is supplied to the terminal tool (10) in the second step (ST2) through the electrode member (7) in contact with the terminal tool (10). The crimping of the terminal tool (10) in the third step (ST3) is performed by stopping the high-frequency current in the second step (ST2) and then pressing members (5, 5) different from the electrode member (7). ) May be performed by pressing the terminal tool (10).

  In the conventional fusing treatment, the terminal tool is pressed and crimped with the electrode member while an electric current is passed through the terminal tool with the electrode member. For this reason, the electrode member has to be made of a material that is excellent in electrical conductivity and is not easily deformed by heat when pressed, and a relatively expensive material such as tungsten has been used. On the other hand, in the manufacturing method of the conductive junction terminal according to the present invention, the terminal tool is pressed and crimped by a pressing member which is a member different from the electrode member for flowing a high-frequency current to the terminal tool. . Therefore, the pressing member is not necessarily required to have conductivity and high heat resistance, and a relatively inexpensive material such as iron can be used. Thereby, since the apparatus used for manufacture of an electroconductive joining terminal can be comprised at low cost, the manufacturing cost of an electroconductive joining terminal can be reduced.

  Moreover, in said manufacturing method of an electroconductive joining terminal, it is good for a press member (5, 5) to arrange | position so that it may press on both sides of a terminal tool (10) in the position which avoided the electrode member (7). According to this, when pressing the terminal tool with the pressing member, the electrode member for allowing the high-frequency current to flow through the terminal tool does not have to be in the way, so that the step of pressing and crimping the terminal tool is facilitated.

Moreover, in said manufacturing method of an electroconductive junction terminal, a terminal tool (10) is the cylinder shape surrounding the outer periphery of a conducting wire bundle (2), and is extended in the direction inclined with respect to the longitudinal direction of a conducting wire bundle (2). In the third step (ST3), the terminal tool (10) may be pressed in the radial direction by the pressing members (5, 5). According to this, the terminal part pressed by the pressing member in the radial direction is squeezed along the spiral shape, so that the accommodating part is reduced in diameter. Can be squeezed. Therefore, it can prevent that each conducting wire of a conducting wire bundle is separated, and can join a conducting wire more reliably.
In addition, the code | symbol in said parenthesis shows the code | symbol of the component in embodiment mentioned later as an example of this invention.

  According to the method for manufacturing a conductive junction terminal according to the present invention, by conducting a high frequency current to the terminal tool, each lead wire of the conductor bundle accommodated in the terminal tool is heated by induction heating. Therefore, the conductor bundle in the terminal can be heated evenly from the outer peripheral side to the center, so that sludge can be effectively prevented from remaining in the terminal, and a uniform joining state is ensured between the outer peripheral side and the center side of the conductor bundle. it can. Further, since a relatively inexpensive material can be used for the parts of the manufacturing apparatus, the manufacturing cost of the conductive junction terminal can be reduced.

It is a top view which shows schematic structure of the terminal manufacturing apparatus used for the manufacturing method of the electrically conductive junction terminal concerning one Embodiment of this invention. It is a front view which shows schematic structure of a terminal manufacturing apparatus. It is a perspective view which shows the structural example of a terminal tool. It is a flowchart for demonstrating the procedure of the manufacturing method of the electrically conductive junction terminal concerning this invention. It is a figure which shows the other structural example of the terminal tool with which a conductive joining terminal is provided, and is a figure which shows the terminal tool used for the terminal for three-phase wire connection. It is a figure which shows the other structural example of the terminal tool with which a conductive junction terminal is provided, and is a figure which shows the terminal tool used for the terminal for neutral point connection.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 are diagrams showing a schematic configuration of a terminal manufacturing apparatus used in a method for manufacturing a conductive junction terminal according to an embodiment of the present invention. FIG. 1 is a plan view and FIG. 2 is a front view. In FIG. 2, the fixtures 5 b and 5 b of the pressing members 5 and 5, which will be described later, the high frequency power supply device 9, and the like are not shown. A conductive junction terminal (hereinafter simply referred to as “terminal”) 1 manufactured by the manufacturing method of the present embodiment is a terminal suitable for use as a neutral point connection terminal or a three-phase line connection terminal of a three-phase motor. The conductor bundle 2 is formed by bundling a plurality of conductors L having an insulating coating, and the cylindrical terminal device 10 having a hollow housing portion 12 that accommodates the conductor bundle 2. The conductor bundle 2 is accommodated. It is manufactured by flowing the high-frequency current through the terminal tool 10 to carbonize and remove the insulation coating of each conductor L of the conductor bundle 2 by induction heating, and then press and crimp the terminal tool 10. .

  The conducting wire bundle 2 is configured by bundling a large number (several tens) of conducting wires L having an insulating coating on the surface. As the conductive wire L having an insulating coating, copper wires coated with various materials such as enameled copper wire (EW), formal copper wire (PVF), polyester copper wire (PEW), and amideimide copper wire (AIW) can be used. . FIG. 3 is a perspective view showing the terminal device 10 attached to the wire bundle 2. As shown in the figure, the terminal tool 10 is a metal member provided with a substantially cylindrical main body portion 11 having an accommodating portion 12 on the inside, and is made of a material obtained by applying tin plating or the like to copper. . The main body 11 is formed with a notch 13 extending along a direction inclined with respect to the longitudinal direction of the conductor bundle 2 (the axial direction of the main body 11). Thereby, the main body 11 is formed in a spiral shape surrounding the accommodating portion 12.

  Next, the terminal manufacturing apparatus 30 used for manufacturing the terminal 1 will be described. The terminal manufacturing apparatus 30 is configured to hold the terminal tool 10 at the central holding position Y. On the outer peripheral side of the holding position Y, a pressing member 5 for pressing the terminal device 10 held at the holding position Y in the radial direction (width direction) is installed. The pressing member 5 sandwiches and presses the terminal tool 10 from both sides with a pair of movable tools 5a and fixing tools 5b installed on both sides of the terminal tool 10 on a straight line extending in the radial direction through the center of the terminal tool 10. It is like that. The fixture 5 b is fixed to one side of the terminal tool 10. The movable tool 5 a is installed on the side opposite to the fixing tool 5 b across the terminal tool 10, and is movable back and forth along a straight line passing through the center of the terminal tool 10. Two sets of pressing members 5 are installed around the terminal device 10 at intervals of 90 degrees.

  Further, a clamp member 6 for holding (fixing) the terminal device 10 at the holding position Y is installed. The clamp member 6 is disposed in the middle of the movable tools 5a and 5a included in the two sets of pressing members 5 and 5, and the fixing tools included in the two sets of pressing members 5 and 5 with the terminal tool 10 at the holding position Y interposed therebetween. It faces 5b, 5b. The clamp member 6 is installed so as to be movable with respect to the holding position Y, and the terminal device 10 set at the holding position Y is sandwiched between the clamp member 6 and the fixing members 5b and 5b of the pressing members 5 and 5. Is supposed to be held. In addition, the movable tool 5a and the clamp member 6 of the pressing member 5 may be installed so as to be movable by a general moving mechanism. Here, the details of the mechanism for moving the movable tool 5a and the clamp member 6 are described. Explanation and illustration are omitted.

  In addition, an electrode member 7 for allowing a high-frequency current to flow through the terminal tool 10 is installed at a position opposite to the clamp member 6 across the terminal tool 10 (position between the fixing tools 5b and 5b). . The electrode member 7 includes an electrode 8 composed of a positive electrode (+ electrode) 8 a and a negative electrode (−electrode) 8 b for contacting the terminal tool 10. A high frequency power supply device 9 is connected to the pair of electrodes 8a and 8b via a wiring 9a, and a high frequency current flows between the high frequency power supply device 9 and the pair of electrodes 8a and 8b. The pair of electrodes 8a and 8b are respectively arranged so as to be in contact with both sides in the longitudinal direction of the terminal device 10 held at the holding position Y (near both ends of the spiral).

  As shown in FIG. 1, the terminal manufacturing apparatus 30 includes a controller 4 for controlling the pressing members 5 and 5 and the high frequency power supply device 9. The movable tools 5 a and 5 a of the pressing members 5 and 5 are configured to move in response to a command from the controller 4. The high-frequency current flowing between the electrodes 8 a and 8 b by the high-frequency power supply device 9 is controlled by a command from the controller 4.

  Next, a method for manufacturing the terminal 1 will be described. FIG. 4 is a flowchart for explaining a method of manufacturing the terminal 1 according to the present embodiment. To manufacture the terminal 1, first, the terminal tool 10 is set at the holding position Y of the terminal manufacturing apparatus 30 and is sandwiched between the clamp member 6 and the fixing tools 5 b and 5 b. In this state, the electrodes 8 a and 8 b of the electrode member 7 are brought into contact with the vicinity of both sides in the longitudinal direction of the terminal tool 10.

  And the 1st process (ST1) which accommodates the conducting wire bundle 2 in the accommodating part 12 of the terminal tool 10 is performed. For this purpose, the wire bundle 2 is inserted and inserted into the accommodating portion 12 from one end (one end in the axial direction) of the terminal tool 10. Here, the order of the step of holding the terminal tool 10 at the holding position Y and the step of storing the wire bundle 2 in the storage portion 12 of the terminal tool 10 may be either first. In addition, when mass-producing the terminal 1 by the manufacturing method according to the present embodiment, the wire bundle 2 is accommodated in the process until the terminal tool 10 is held at the holding position Y and the accommodating portion 12 of the terminal tool 10. The process may be performed automatically.

  In this way, when the conductor bundle 2 is accommodated in the terminal tool 10 held at the holding position Y, in this state, a second high-frequency current is applied to the terminal tool 10 via the electrodes 8a and 8b by the high-frequency power supply device 9. Step (ST2) is performed. At this time, when the high frequency current flows between both ends of the spiral terminal tool 10, the terminal tool 10 functions as an induction coil, and the high frequency magnetic flux is applied to each conductor L of the conductor bundle 2 accommodated in the accommodating portion 12 of the terminal instrument 10. Will occur.

  Here, the principle of general induction heating will be briefly described. When an induction coil is installed around a metal object to be heated and a high-frequency current (alternating current) is passed through the induction coil, a high-frequency magnetic flux generated by the high-frequency current penetrates the object to be heated with a high-density current ( An eddy current) is induced, whereby the inside of the object to be heated is heated from the surface side. A phenomenon in which an electric current is induced in the object to be heated by the high-frequency magnetic flux generated by the induction coil is called induction heating. Here, the eddy current tends to be stronger as it is closer to the surface of the object to be heated, and becomes weaker exponentially as it goes inside, and this is called a skin effect.

  And in the said 2nd process, each conducting wire L of the conducting wire bundle 2 heat | fever-generates by induction heating because the high frequency magnetic flux generate | occur | produces in each conducting wire L of the conducting wire bundle 2 accommodated in the accommodating part 12 of the terminal tool 10. FIG. When each conducting wire L of the conducting wire bundle 2 generates heat, the insulating coating of each conducting wire L is carbonized and melted. Thereby, each conducting wire L in the conducting wire bundle 2, the terminal tool 10, and the conducting wire bundle 2 are joined in a conductive state.

  In this case, since each conducting wire L of the conducting wire bundle 2 generates heat by induction heating, the conducting wire L can be uniformly heated from the outer peripheral side to the central side by the skin effect of each conducting wire L. Therefore, it is possible to reliably melt the insulating coating of the conductor L located not only on the outer peripheral side of the conductor bundle 2 but also in the center. Thereby, sludge can be effectively discharged to the outside of the terminal 1 (outside of the accommodating portion 12), and sludge can be prevented from remaining in the terminal 1.

  When it is determined that the insulation coating of each conductor L is sufficiently carbonized and melted in the step of supplying a high-frequency current to the terminal 10 (second step), energization of the high-frequency current is stopped. Thereafter, the movable members 5a and 5a of the pressing members 5 and 5 are moved to the terminal device 10 side, and the terminal device 10 is sandwiched between the pair of pressing members 5 and 5 so that the terminal device 10 is pressed and caulked. Step (ST3) is performed. Thereby, the main-body part 11 of the terminal tool 10 is crushed in radial direction. Here, since the terminal tool 10 has a spiral shape in which a notch 13 extending in a direction inclined with respect to the longitudinal direction of the wire bundle 2 (the axial direction of the main body portion 11) is formed, the terminal tool 10 is formed of the pressing member 5. By pressing in the radial direction at 5, the main body part 11 of the terminal tool 10 is squeezed along the spiral shape and the accommodating part 12 is reduced in diameter. Thereby, it can crimp, in the state which fastened and bundled the conducting wire bundle 2 accommodated in the accommodating part 11. FIG. Thus, the manufacture of the terminal 1 is completed.

  As described above, according to the method for manufacturing the terminal 1 according to the present embodiment, the high-frequency current is caused to flow through the terminal device 10 in which the conductive wire bundle 2 is accommodated, so that the conductive wire bundle is heated using induction heating. 2 was heated. Therefore, due to the skin effect of each conductor L, the conductor bundle 2 can be heated uniformly from the outer peripheral side to the center side regardless of the number of conductors L included in the conductor bundle 2. Thereby, the insulation coating of the conducting wire L located not only on the outer peripheral side of the conducting wire bundle 2 but also in the central portion can be reliably melted. Therefore, sludge (carbonized product) can be effectively discharged to the outside of the terminal tool 10 (outside of the accommodating portion 12), and sludge can be prevented from remaining in the terminal 1.

  Moreover, according to the manufacturing method of the terminal 1 concerning this embodiment, since the terminal tool 10 which accommodates the conducting wire bundle 2 serves also as the member (induction coil) for causing induction heating to each conducting wire L of the conducting wire bundle 2. This eliminates the need for a dedicated induction heating jig. Thereby, the structure of the terminal manufacturing apparatus 30 can be simplified. Furthermore, by crimping the terminal tool 10 used for causing the induction heating together with the conductor bundle 2, it is possible to prevent the conductors L of the conductor bundle 2 from being scattered, and to securely connect each conductor L of the conductor bundle 2. Can be joined.

  Further, in the conventional fusing treatment, the terminal tool is pressed and caulked with an electrode member for flowing current to the terminal tool. For this reason, the electrode member has to be made of a material that is excellent in conductivity and that is not easily deformed by heat when pressed, and an expensive material such as tungsten has been used. On the other hand, in the method for manufacturing the terminal 1 according to the present embodiment, after the high-frequency current supply to the terminal tool 10 performed via the electrode member 7 is stopped, the member is different from the electrode member 7. The terminal 10 is crimped by pressing the terminal 10 with the pressing members 5 and 5. Therefore, the pressing members 5 and 5 of the terminal manufacturing apparatus 30 do not necessarily require conductivity and high heat resistance, and a relatively inexpensive material such as iron can be used instead of expensive tungsten. Thereby, since the terminal manufacturing apparatus 30 can be comprised cheaply, the manufacturing cost of the terminal 1 can be reduced effectively.

  Moreover, in the manufacturing method of the terminal 1 concerning this embodiment, the press members 5 and 5 are arrange | positioned so that it may press on both sides of the terminal tool 10 in the position which avoided the electrode member 7. FIG. Therefore, when the terminal member 10 is pressed by the pressing members 5 and 5, the electrode member 7 for allowing a high-frequency current to flow through the terminal member 10 does not need to be obstructed. It becomes easy to do.

  The terminal tool 10 has a cylindrical shape that surrounds the outer periphery of the conductor bundle 2, and has a spiral shape in which a cut 13 that extends in an inclined direction with respect to the longitudinal direction of the conductor bundle 2 is formed. And in the said 3rd process, the pressing members 5 and 5 press the terminal tool 10 to radial direction, and the terminal tool 10 is restrict | squeezed along helical shape, and the accommodating part 12 comes to reduce in diameter. Yes. Thereby, it can crimp in the state which fastened and bundled the conducting wire bundle 2 accommodated in the accommodating part 12. FIG.

  5 and 6 are diagrams showing another example of the configuration of the terminal used for the terminal manufactured by the manufacturing method of the present embodiment. FIGS. 5A and 5B are diagrams for connecting three-phase lines. FIGS. 6A and 6B are diagrams showing the terminal tools 10-2 and 10-3 used for the terminals, and FIG. 6 is a diagram showing the terminal tool 10-4 used for the neutral point connecting terminals. In addition, in FIG. 6, the conductor bundle 2 accommodated in the terminal tool 10-4 is also illustrated. If the terminal tool 10 (10-2 to 10-4) used for the terminal manufactured by the manufacturing method of the present embodiment is a spiral cylindrical shape surrounding the outer periphery of the conductive wire bundle 2, its length and the conductive wire bundle 2 The specific shape such as the number of windings around is not limited.

  Moreover, the terminal tool used for the terminal manufactured by the manufacturing method of this embodiment is a flat terminal (bolt for fixing wiring) at the end of the cylindrical main body 11 as shown in FIGS. The terminal tool 10-2, 10-3 used for the terminal for three-phase wire connection provided with the stop plate 15) may be used, or only the cylindrical main body 11 is provided as shown in FIG. 3 or FIG. The terminal tool 10 and 10-4 used for the terminal for neutral point connection may be sufficient.

  The flat terminal 15 may be configured integrally with the main body 11 of the terminal tool 10-2 as shown in FIG. 5A, or as shown in FIG. 5B. What was prepared as a separate part from the main body part 11 of the tool 10-3 may be clamped by being sandwiched together with the wire bundle 2 in the housing part 12 of the main body part 11.

  Moreover, as shown in FIG. 6, the terminal tool used for the terminal manufactured by the manufacturing method of this embodiment is as shown in FIG. 6 in addition to the terminal tool 10 in which the notch 13 is formed in the cylindrical main body 11 as shown in FIG. The terminal tool 10-4 formed by winding the wire 16 in a coil shape may be used. In this case, the wire 16 may be either a square wire (a wire having a square cross section) or a round wire (a wire having a round cross section). Thus, the manufacturing method according to the present embodiment can also be implemented by causing the terminal tool 10-4 made of the wire 16 wound in a coil shape to function as an induction coil.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. For example, in the process (second step) of flowing a high-frequency current through the terminal tool 10, the terminal tool 10 becomes high temperature. For this reason, although detailed illustration and explanation are omitted, by taking a high-frequency current while cooling the terminal device 10 using a cooling means such as cooling water, measures for preventing the terminal device 10 from being dissolved are appropriately taken. It is good to do.

1 terminal (conductive junction terminal)
2 Conductor Bundle 4 Controller 5 Pressing Member 5a Movable Tool 5b Fixing Tool 6 Clamping Member 7 Electrode Member 8 Electrode 9 High Frequency Power Supply Device 10 Terminal Tool 11 Body 12 Housing 13 Cut 30 Terminal Manufacturing Device L Conductor Y Holding Position

Claims (4)

A conductor bundle formed by bundling a plurality of conductor wires having an insulating coating, and a terminal tool having a housing portion for housing the wire bundle, and electrically joining the wire bundle housed in the housing portion and the terminal tool. A method for producing a conductive junction terminal, comprising:
A first step of accommodating the wire bundle in the accommodating portion of the terminal;
A second step of energizing the terminal tool with a high-frequency current and melting the insulating coating of the conductor by induction heating;
And a third step of caulking the terminal tool together with the conductive wire bundle. Energization of the high-frequency current to the terminal tool in the second step is performed via an electrode member in contact with the terminal tool,
The caulking of the terminal tool in the third step is performed by pressing the terminal tool with a pressing member different from the electrode member after stopping energization of the high-frequency current in the second step. The manufacturing method of the conductive junction terminal of Claim 1 characterized by the above-mentioned. The method of manufacturing a conductive joint terminal according to claim 2, wherein the pressing member is arranged so as to press the terminal tool at a position avoiding the electrode member. The terminal tool has a cylindrical shape that surrounds the outer periphery of the conductor bundle, and a spiral shape that extends in a direction inclined with respect to the longitudinal direction of the conductor bundle,
The method for manufacturing a conductive joint terminal according to claim 2 or 3, wherein, in the third step, the terminal tool is pressed in a radial direction by the pressing member.

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