JP4746519B2 - Continuous terminal, manufacturing method of continuous terminal, and manufacturing method of electric wire with terminal - Google Patents

Description

  The present invention relates to a continuous terminal, a method for manufacturing a continuous terminal, and a method for manufacturing an electric wire with a terminal.

  2. Description of the Related Art Conventionally, there is known a continuous terminal in which a large number of terminals are continuously arranged at predetermined intervals along the longitudinal direction of a strip-shaped carrier (see, for example, Patent Document 1).

FIG. 5 shows a configuration of a continuous terminal according to such a conventional example. As shown in FIG. 5, the conventional continuous terminal integrally includes a carrier 101 extending in a specific direction and a plurality of terminals 102, and these terminals 102 are arranged in the longitudinal direction of the carrier 101 and are arranged on the carrier 101. It is connected. In other words, the carrier 101 and the plurality of terminals 102 are arranged so as to be aligned in the axial direction of the terminals 102 orthogonal to the arrangement direction of the terminals 102. Further, this conventional continuous terminal is manufactured using a terminal original plate shown in FIG. 6 punched out from a single metal plate, and a plurality of terminal development portions 102a connected to the carrier 101 of the terminal original plate are bent. Thus, the plurality of terminals 102 are formed.
JP 7-226235 A

  In order to manufacture the conventional continuous terminal shown in FIG. 5, from a metal original plate having a width equal to or larger than the sum of the axial dimension of the terminal expanding portion 102a and the width dimension of the carrier 101 shown in FIG. The terminal plate must be punched out. Moreover, the carrier 101 is a portion that is discarded after the terminal 102 is crimped to the electric wire. Therefore, this conventional continuous terminal has a problem that the material cost increases because the material cost is increased by the amount of the carrier 101.

  The present invention has been made to solve the above-described problems, and an object thereof is to reduce material costs.

  In order to achieve the above object, a continuous terminal according to the present invention is a continuous terminal integrally provided with a plurality of terminals, and each terminal is arranged in a specific direction intersecting the axial direction thereof, An electrical connection portion that is electrically connected to the side terminal, a core wire crimp portion that is crimped to the core wire portion of the covered electric wire, and a coated crimp portion that is crimped to the insulating sheath portion of the covered electric wire, The core crimping part and the covering crimping part are arranged side by side in the axial direction of the terminal, and the covering crimping part has a pair of crimping pieces arranged on both sides across the axis of the terminal, These crimping pieces are bent and raised in a direction orthogonal to the arrangement direction of the terminals, so that the insulation covering portion of the covered electric wire can be set between the crimping pieces and the adjacent terminals Adjacent crimping of the coated crimping part Between the tip portion are connected to each other.

  The manufacturing method of a continuous terminal according to the present invention is a manufacturing method of a continuous terminal for manufacturing the above-mentioned continuous terminal, and includes a plurality of terminal expansion portions having an expanded shape of the terminals arranged in the specific direction. A step of punching a terminal original plate integrally formed from a metal plate, and a step of bending each terminal unfolded portion of the terminal original plate to form the terminal. And in the step of punching out the terminal original plate, in each of the terminal expansion portions, an electrical connection portion expansion portion having a developed shape of the electrical connection portion, a core wire crimping portion development portion having a developed shape of the core wire crimping portion, and the covering A covering crimping part developing part having a developed shape of the crimping part is arranged side by side in the axial direction of the terminal developing part, and the covering crimping part developing part is planar on both sides across the axis of the terminal developing part. The terminal base plate is punched out to form a shape in which the tip ends of the adjacent crimping pieces of the covering crimping portion developing portions of the adjacent terminal developing portions are connected to each other. The step of forming the electrical connection portion by bending the electrical connection portion expanding portion, the step of forming the core crimping portion by bending the core wire crimping portion expanding portion, and the covering Forming the covering crimping portion by bending a pair of crimping pieces of the landing portion unfolding portion in a direction perpendicular to the arrangement direction of the terminals, and in the step of forming the covering crimping portion, the adjacent terminals The covering crimping portions of the terminals are formed so that the tip portions of the crimping pieces adjacent to the covering crimping portion are connected to each other.

  Moreover, the manufacturing method of the electric wire with a terminal according to the present invention includes the step of manufacturing the above-described continuous terminal and the covering in which the manufactured continuous terminal is supplied to the crimping portion of the crimping machine and the adjacent terminals are connected to each other. The step of separating between the crimping pieces of the crimping part, and setting the core wire part of the covered electric wire to the core wire crimping part of the separated terminal and the insulating coating part of the covered electric wire between the pair of crimping pieces of the covering crimping part of the terminal And crimping the core crimping portion to the core wire portion of the covered electric wire, and crimping the pair of crimping pieces of the coated crimping portion to the insulating coating portion of the covered electric wire.

  In the continuous terminal manufactured by the continuous terminal according to the present invention and the continuous terminal manufacturing method of the present invention, the electrical connection portion, the core wire crimping portion, and the covering crimping portion of each terminal are arranged side by side in the axial direction of the terminal. The terminal where the coated crimping portions of the adjacent terminals are connected to each other, and in order to manufacture this continuous terminal, the terminal developed portions adjacent to each other are connected to each other at the coated crimping portion developed portion in the axial region. An original plate can be used. Thereby, what has a width | variety equal to the dimension of the axial direction of a terminal expansion | deployment part can be used as a metal plate which punches out this terminal original plate. For this reason, material cost can be reduced compared with the case where the metal plate which has the width more than the dimension which added the dimension of the axial direction of a terminal deployment part and the dimension of the width direction of a carrier like the past is used. .

  By the way, in order to reduce the material cost, not only the continuous terminal in which the adjacent terminals are connected to each other at the distal end portion of the crimped piece of the coated crimped portion bent and raised according to the present invention, It is possible to reduce the material cost in the same manner even with the continuous terminals in which the crimping pieces of the covering crimping part developing portion of the adjacent terminals are connected to each other in a state where the crimping pieces are not bent up. However, when manufacturing a terminal-attached electric wire using the continuous terminal according to the present invention, the crimped piece of the above-described coated crimping portion unfolding portion that can manufacture the electric wire with a terminal with a simple crimping equipment is not bent up. It is possible to obtain an effect that cannot be obtained with a continuous terminal in which the crimping pieces of the covering crimping portion of adjacent terminals are connected to each other. That is, when a terminal-attached electric wire is manufactured using the continuous terminal according to the present invention, a pair of crimping pieces of the coated crimping part is already bent and the insulating coating part of the coated wire can be set between the crimping pieces. Unlike the case of manufacturing an electric wire with a terminal using a continuous terminal in which the crimping piece of the above-mentioned coated crimping part unfolded part is not bent up, the coated crimping before the terminal is crimped to the coated electric wire It is not necessary to bend and raise the pressure-bonding piece of the partial development portion to form the covering pressure-bonding portion. For this reason, there is no need to separately provide a mechanism for forming the coated crimped portion by bending the crimped piece of the coated crimped portion developing portion in the crimping applicator applied to the crimped portion of the crimping machine that crimps the terminal to the coated electric wire. The electric wire with a terminal can be manufactured with simple crimping equipment.

  As described above, according to the present invention, the material cost can be reduced, and the electric wire with terminal can be manufactured with a simple crimping facility.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic view showing a configuration of a production line used in a method for producing a continuous terminal according to an embodiment of the present invention. FIG. 2 is a plan view illustrating a configuration of a terminal original plate that is punched from a metal plate in a manufacturing process of a continuous terminal according to an embodiment of the present invention. FIG. 3 is a plan view showing a configuration of a continuous terminal according to an embodiment of the present invention, and FIG. 4 is a side view of the continuous terminal shown in FIG. 3 as viewed in the axial direction of each terminal. With reference to FIGS. 1-4, the process from manufacture of the continuous terminal by one Embodiment of this invention to manufacture of the electric wire with a terminal using the continuous terminal is demonstrated.

  First, the continuous terminal according to the present embodiment is manufactured through a series of continuous processes using a manufacturing line as shown in FIG. This production line includes a punching part 201, a terminal forming part 202, and a winding part 203.

  In this production line, first, a long and wide metal plate 200 serving as a material for a continuous terminal is sequentially fed into the punched portion 201 along the longitudinal direction thereof. 2 is punched from the metal plate 200 in the punching portion 201.

  The punched terminal blank integrally has a plurality of identical terminal deployment portions 1 arranged in a specific direction. Each terminal expansion part 1 has a developed shape of a terminal 11 described later. And each terminal expansion | deployment part 1 integrates the electrical connection part expansion | deployment part 2, the wire barrel expansion | deployment part 3 (core wire crimping | crimped part expansion | deployment part), and the insulation barrel expansion | deployment part 4 (covering crimp | compression-bonding part expansion | deployment part), respectively. Have. The electrical connection part development part 2, the wire barrel development part 3 and the insulation barrel development part 4 are arranged side by side in this order in the axial direction of the terminal development part 1 orthogonal to the arrangement direction of the terminal development parts 1. The electric connection part expansion | deployment part 2 has the expansion | deployment shape of the electric connection part 12 mentioned later. The wire barrel development part 3 has a developed shape of the wire barrel 13 described later, and a pair of crimps extending in a plane on both sides across the axis of the terminal development part 1 along the arrangement direction of the terminal development parts 1. It consists of pieces 3a, 3a. The insulation barrel deployment part 4 has a deployment shape of an insulation barrel 14 to be described later, and is planarly arranged on both sides across the axis of the terminal deployment part 1 along the arrangement direction of the terminal deployment parts 1. It consists of a pair of crimping pieces 4a, 4a extending. And in this terminal original plate, the front-end | tip parts of the adjacent crimping piece 4a of the insulation barrel expansion | deployment part 4 of the adjacent terminal expansion | deployment part 1 are mutually connected. And after the terminal original board of the said structure is punched in the punching part 201 of a manufacturing line, it is sequentially sent to the terminal shaping | molding part 202. FIG.

  In the terminal molding part 202, each terminal development part 1 of the terminal original plate is bent to produce the continuous terminal of this embodiment shown in FIG. Specifically, the produced continuous terminal is integrally provided with a plurality of terminals 11 formed by bending each of the terminal development portions 1. Each terminal 11 is crimped to a covered electric wire and attached to the housing of the connector, and when the connector and the mating connector are fitted, the terminal 11 is coupled with the mating connector terminal to make an electrical connection. It is. Each terminal 11 is arranged at a predetermined interval in a specific direction orthogonal to the axial direction. Each terminal 11 integrally includes an electrical connecting portion 12, a wire barrel 13 (core crimping portion), and an insulation barrel 14 (cover crimping portion). The electrical connecting portion 12, the wire barrel 13, and the insulation barrel 14 are arranged in this order in the axial direction of the terminal 11.

  The electrical connection portion 12 is a portion that is electrically connected to the terminal of the mating connector, and is formed by bending the electrical connection portion developing portion 2 of the terminal original plate. The wire barrel 13 is a part that is crimped to the core part of the covered electric wire. The wire barrel 13 includes a pair of crimping pieces 3 a and 3 a disposed on both sides of the axis of the terminal 11. These crimping pieces 3a and 3a are bent by raising the pair of crimping pieces 3a and 3a of the wire barrel development part 3 of the terminal original plate in a direction perpendicular to the arrangement direction of the terminals 11, so that the crimping pieces 3a and 3a are connected to each other. The core wire portion of the covered electric wire is formed in a U-shaped cross section that opens to the upper side where it can be set. The insulation barrel 14 is a portion that is crimped to the insulating coating portion of the coated electric wire. The insulation barrel 14 includes a pair of crimping pieces 4 a and 4 a disposed on both sides of the axis of the terminal 11. These crimping pieces 4a and 4a are bent and raised in a direction perpendicular to the arrangement direction of the terminals 11 by the pair of crimping pieces 4a and 4a of the insulation barrel developing portion 4 of the terminal original plate. It is formed in a U-shaped cross section that opens to the upper side where the insulation coating portion of the covered electric wire can be set. In the present embodiment, the pressure-bonding pieces 4a and 4a are bent and formed in a state where the tip ends of the pressure-bonding pieces 4a of the adjacent insulation barrel developing portions 4 are connected to each other, thereby forming each insulation barrel 14. Thereby, the front-end | tip parts of the adjacent crimping piece 4a of the insulation barrel 14 of the adjacent terminal 11 are formed in the shape connected via the connection part 4c.

  Then, the crimping pieces 4 a and 4 a of the insulation barrel developing part 4 are bent and raised after the electrical connection part 12 and the wire barrel 13 are formed. As the crimping pieces 4a and 4a of the insulation barrel developing part 4 are bent and raised, the distance between the adjacent terminals 11 is reduced. Thus, after the electrical connection part 12 and the wire barrel 13 are formed, the insulation barrel developing part 4 By bending the crimping pieces 4a and 4a, the electrical connecting portion developing portion 2 is bent to the electric connecting portion 12 to reduce the width, and the wire barrel expanding portion 3 is bent to the wire barrel 13 to obtain the width. Since the interval between the adjacent terminals 11 is narrowed after the distance becomes smaller, the adjacent terminals 11 are prevented from interfering with each other in the region corresponding to the electrical connection portion 12 and the wire barrel 13. As described above, the continuous terminal according to the present embodiment in which the tip portions of the adjacent crimping pieces 4a of the insulation barrels 14 of the adjacent terminals 11 are connected to each other is manufactured. And the produced continuous terminal is wound up on a reel in order by the winding-up part 203 of a production line.

  Next, the electric wire with a terminal is manufactured using the produced continuous terminal. In the manufacturing process of the electric wire with terminal, the continuous terminal wound around the reel is mounted on the crimping machine, and the continuous terminal is sequentially pulled out from the reel to supply the terminal 11 to the crimping portion of the crimping machine. And in the crimping | compression-bonding part of a crimping machine, it adjoins between the crimping | compression-bonding pieces 4a of the insulation barrel 14 with which the adjacent terminal 11 was mutually connected. Specifically, the boundary portion between the connecting portion 4c connecting the adjacent crimping pieces 4a of the adjacent terminals 11 and the crimping piece 4a is cut, and the portion of the connecting portion 4c is discarded. And the core wire part of the covered wire is set between the pair of crimping pieces 3a, 3a of the wire barrel 13 of the disconnected terminal 11, and the insulation coating of the covered wire is placed between the pair of crimping pieces 4a, 4a of the insulation barrel 14. The part is set. Thereafter, the crimping pieces 3a and 3a of the wire barrel 13 are crimped to the core wire portion of the covered electric wire, and the crimping pieces 4a and 4a of the insulation barrel 14 are crimped to the insulating coating portion of the covered electric wire, thereby 11 are combined. In this way, a terminal-attached electric wire is produced.

  As described above, in the continuous terminal according to the present embodiment, the electrical connection portion 12 of each terminal 11, the wire barrel 13, and the insulation barrel 14 are arranged side by side in the axial direction of the terminal 11, and adjacent terminals. 11 insulation barrels 14 are connected to each other, and in order to manufacture this continuous terminal, adjacent terminal development portions 1 are connected to each other at the insulation barrel development portion 4 in the axial region. An original plate can be used. Thereby, what has the width | variety equal to the dimension of the axial direction of the terminal expansion | deployment part 1 can be used as the metal plate 200 which punches out this terminal original plate. For this reason, material cost can be reduced compared with the case where the metal plate which has the width more than the dimension which added the dimension of the axial direction of a terminal deployment part and the dimension of the width direction of a carrier like the past is used. .

  In addition, the crimping piece of the insulation barrel unfolding portion is bent and raised, not limited to the continuous terminal in which the adjacent terminals 11 are connected to each other at the tip of the crimping piece 4a of the insulation barrel 14 that is bent and raised according to the present embodiment. It is possible to reduce the material cost in the same manner even with a continuous terminal in which the crimping pieces of the insulation barrel developing portions of adjacent terminals are connected to each other in a state where they are not. However, when manufacturing a terminal-attached electric wire using the continuous terminal according to the present embodiment, the crimp piece of the above insulation barrel unfolding portion that can manufacture the electric wire with a terminal with a simple crimping facility is not bent up. Thus, it is possible to obtain an effect that cannot be obtained with a continuous terminal in which the crimping pieces of the insulation barrel developing portions of adjacent terminals are connected to each other. That is, when manufacturing an electric wire with a terminal using the continuous terminal according to the present embodiment, the pair of crimping pieces 4a, 4a of the insulation barrel 14 has already been bent and the covered electric wire is between the crimping pieces 4a, 4a. Unlike the case where a wire with a terminal is manufactured using a continuous terminal in which the crimped piece of the insulation barrel development part is not bent up, the insulation coating part can be set. It is not necessary to form the insulation barrel by bending the crimping piece of the insulation barrel developing portion before the pressure bonding of 11. For this reason, it is not necessary to separately provide a mechanism for forming the insulation barrel by bending the crimped piece of the insulation barrel developing portion in the crimping applicator applied to the crimping portion of the crimping machine that crimps the terminal 11 to the covered electric wire. Therefore, the electric wire with a terminal can be manufactured with a simple crimping facility.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  For example, in the above-described embodiment, the electrical connection portion deployment portion 2 is bent into the electrical connection portion 12 and the wire barrel deployment portion 3 is bent into the wire barrel 13, and then the crimping pieces 4 a of the insulation barrel deployment portion 4. Insulation barrel 14 is formed by bending 4a. However, the present invention is not limited to this, and after bending electrical connection portion deployment portion 2 into electrical connection portion 12, crimping pieces 3a, 3a of wire barrel deployment portion 3 are formed. And the crimping pieces 4a, 4a of the insulation barrel developing portion 4 may be bent and raised almost simultaneously. Even in this case, since the length of the wire barrel development part 3 is smaller than the length of the insulation barrel development part 4, the crimp pieces 3a, 3a of the wire barrel development part 3 and the crimp pieces 4a, 4a of the insulation barrel development part 4 are used. Can be prevented from interfering with the crimping pieces 3a of the adjacent wire barrel unfolding portions 3.

  Moreover, in the said embodiment, although it comprised so that the adjacent crimping | compression-bonding piece 4a of the insulation barrel 14 of the adjacent terminal 11 might be connected mutually via the connection part 4c, it is not restricted to this but without connecting the connection part 4c Adjacent crimping pieces 4a of the insulation barrels 14 of the adjacent terminals 11 may be directly connected to each other. In this case, after the crimping pieces 4a of the insulation barrel 14 connected to each other in the crimping part of the crimping machine are cut off, the connecting part 4c does not have to be discarded.

It is the schematic which showed the structure of the manufacturing line used for the manufacturing method of the continuous terminal by one Embodiment of this invention. It is the top view which showed the structure of the terminal original plate stamped out from a metal plate in the manufacture process of the continuous terminal by one Embodiment of this invention. It is the top view which showed the structure of the continuous terminal by one Embodiment of this invention. It is the side view which looked at the continuous terminal shown in FIG. 3 in the axial direction of each terminal. It is the top view which showed the structure of the continuous terminal by a conventional example. It is the top view which showed the structure of the terminal original plate used in order to form the conventional continuous terminal shown in FIG.

Explanation of symbols

1 Terminal expansion part 2 Electrical connection part expansion part 3 Wire barrel expansion part (core wire crimping part expansion part)
4 Insulation barrel deployment part (coating crimping part deployment part)
4a Crimping piece 11 Terminal 12 Electrical connection 13 Wire barrel (core wire crimping part)
14 Insulation barrel (Coating crimping part)
200 Metal plate

Claims (3)

A continuous terminal provided with a plurality of terminals,
Each of the terminals is arranged in a specific direction intersecting the axial direction thereof, and is electrically connected to a counterpart terminal, a core wire crimping part crimped to a core wire part of a covered electric wire, and the covering Including a coated crimping part to be crimped to the insulating coating part of the electric wire,
The electrical connection portion, the core crimping portion, and the covering crimping portion are arranged side by side in the axial direction of the terminal,
The covering crimping part has a pair of crimping pieces arranged on both sides of the terminal axis, and these crimping pieces are bent and raised in a direction perpendicular to the arrangement direction of the terminals. A continuous terminal in which the insulation covering portion of the covered electric wire is formed between the pieces so that the end portions of the adjacent crimping pieces of the covering crimping portions of the adjacent terminals are connected to each other. . It is a manufacturing method of the continuous terminal according to claim 1,
A step of punching out from a metal plate a terminal original plate integrally having a plurality of terminal development portions having a developed shape of the terminals arranged in the specific direction;
A step of bending each terminal unfolded portion of the terminal original plate to form the terminal,
In the step of punching out the terminal original plate, in each of the terminal development portions, an electrical connection portion development portion having a development shape of the electrical connection portion, a core wire crimp portion development portion having a development shape of the core wire crimp portion, and the covering crimp portion And a covering crimping portion developing portion arranged in the axial direction of the terminal developing portion, and the covering crimping portion developing portion extends planarly on both sides of the axis of the terminal developing portion. Composed of a pair of crimping pieces, the terminal original plate is punched out so that the tip portions of the crimping pieces adjacent to each other of the adjacent crimping part development part of the terminal development part are connected to each other,
The step of forming the terminal includes the step of forming the electrical connection portion by bending the electrical connection portion developing portion, and the step of forming the core crimping portion by bending the core crimping portion expanding portion. And forming the coated crimped portion by bending the pair of crimped pieces of the coated crimped portion developing portion in a direction perpendicular to the arrangement direction of the terminals,
In the step of forming the covering crimp portion, the covering crimp portion of each terminal is formed so that the tip portions of the adjacent crimping pieces of the adjacent crimping portions of the adjacent terminals are connected to each other. Terminal manufacturing method. Manufacturing the continuous terminal according to claim 1;
Supplying the produced continuous terminal to the crimping part of the crimping machine, and separating the adjacent terminals between the crimping pieces of the coated crimping part connected to each other;
The core wire portion of the covered electric wire is set on the core wire crimp portion of the separated terminal, and the insulating coating portion of the covered electric wire is set between a pair of crimp pieces of the terminal cover crimp portion, and the core wire crimp portion is covered with the sheath. A method of manufacturing an electric wire with a terminal, comprising: crimping a core wire portion of an electric wire and crimping a pair of crimp pieces of the covered crimp portion to an insulating coating portion of the covered electric wire.

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