JP2020113519A - Terminal chain, terminal reel, and manufacturing method of wire with terminal - Google Patents

Abstract

To provide a terminal chain capable of attaining improvement of manufacturability, cost reduction, etc., in relation to manufacture of a wire with terminal, and to also provide a terminal reel, a manufacturing method of the wire with terminal, etc.SOLUTION: A manufacturing method of a wire 1 with terminal includes the steps of: manufacturing a terminal reel 2 constituted by winding a terminal chain 4; conveying the terminal reel 2 to a wire harness manufacturing site 3; and crimping a cut terminal 6 with a terminal of a wire 5 while cutting a cutting portion 22 of a second terminal expanded shape part in the terminal chain 4 pulled out of the terminal reel 2 in accordance with the type of the wire 5. The terminal chain 4 includes a carrier 11 and a number of terminal expanded shape parts, and the terminal expanded shape parts include a first expanded shape part to be used as an electric contact part 24 and a second expanded shape part 14 to be used as a barrel part 30. The second expanded shape part 14 includes the cutting portion 22 capable of cutting both ends of the carrier 11 in an extension direction in accordance with the type of the wire 5.SELECTED DRAWING: Figure 1

Description

The present invention relates to a terminal chain. Specifically, it relates to a carrier and a terminal chain having a large number of terminal development shapes. The present invention also relates to a terminal reel obtained by winding a chain terminal body around a reel body, and a method for manufacturing an electric wire with a terminal using the terminal reel.

For example, a wire harness arranged in an automobile has many electric wires with terminals. This electric wire with a terminal is manufactured by crimping the terminal to the end of the electric wire. When manufacturing an electric wire with a terminal, a terminal corresponding to the type of the electric wire is crimped to the end of the electric wire. The terminal to be crimped is based on the terminal of the terminal chain body drawn from the corresponding terminal reel. When the chain terminal is supplied to the crimping machine, the terminal and the end of the electric wire are crimped by the operation of the crimping machine.

The chain of terminals is formed by punching out a metal strip having conductivity in accordance with the developed shape of the terminal, and then, after punching, molding into the shape of the terminal. The terminal chain has a carrier extending in an elongated direction of the metal strip, and a large number of terminals protruding in a direction orthogonal to the carrier and arranged at predetermined intervals in the extending direction. 1 is manufactured as shown in FIG.

JP, 2008-66271, A

In the above-described electric wire with a terminal according to the related art, since the terminal corresponding to the type of the electric wire is crimped to the end of the electric wire, a number of terminal chain bodies (terminal reels) are prepared according to the type of the electric wire. Therefore, in the crimping machine, it is necessary to change the setup for crimping the terminals, which has a problem that productivity and cost are affected. In addition, there is a problem that a space for storing a chain of terminals (terminal reel) is secured and inventory management is also affected.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal chain that can improve the productivity and reduce the cost of manufacturing an electric wire with a terminal. Another object is to provide a method for manufacturing a terminal reel or an electric wire with a terminal.

The terminal chain body of the present invention according to claim 1, which was made to solve the above-mentioned problems, has a carrier on a metal strip plate for producing a terminal in a terminal with an electric wire, and a large number of terminal expanded shape portions connected to the carrier. And the terminal expanded shape part has a first expanded shape part used as an electrical contact part and a second expanded shape part used as a barrel part, and the second expanded shape part is the carrier. Is characterized by having a disconnectable portion capable of cutting both ends in the extending direction of the wire according to the type of the electric wire.

According to the present invention having the features of claim 1, since the second unfolding shape portion used as the barrel portion has the severable portion, one terminal chain body is provided with a plurality of types depending on the type of the electric wire. Since the terminal can be provided, the number of setup changes for crimping the terminal can be reduced in the crimping machine. As a result, workability and manufacturability can be improved, and the number of molds used in the crimping machine can be reduced, so that the cost can be reduced. Further, in connection with the manufacture of the electric wire with terminal, necessary terminals can be supplied at necessary timing, which can contribute to reduction of lead time of parts. Further, it is possible to contribute to reduction of incidental costs of transportation, reduction of storage space, and facilitation of inventory management.

According to a second aspect of the present invention, in the terminal chain body according to the first aspect, the barrel portion corresponding to the cuttable portion is a wire barrel and/or an insulation barrel.

According to the present invention having the features of claim 2, since the barrel portion corresponding to the cuttable portion is the wire barrel and/or the insulation barrel, the end portion of the wire barrel and/or the insulation barrel. You can adjust the length up to. As a result, it is possible to form an optimum crimped state according to the type of electric wire.

Further, the terminal reel of the present invention according to claim 3 made in order to solve the above-mentioned problem, said chain with the second expanded shape part in the terminal chain body according to claim 1 or 2 being in the expanded state. It is characterized in that the terminal body is wound around the reel body.

According to the present invention having the feature of claim 3, the chain terminal body is wound around the reel body while the second developed shape portion of the terminal chain body is in the developed state. By using the reel, in the production of the electric wire with terminal, it is possible to supply necessary terminals at necessary timing.

Further, a method for manufacturing an electric wire with a terminal according to the present invention as set forth in claim 4 for solving the above-mentioned problems comprises a step of manufacturing the terminal reel according to claim 3 and a wire harness manufacturing site for the terminal reel. And a step of transporting the cut terminal to the terminal reel body from the terminal reel according to the type of electric wire while crimping the cut terminal and the end of the electric wire. And a process.

According to the present invention having the features of claim 4 as described above, since the terminal reel according to claim 3 is used, necessary terminals can be supplied at required timing in the production of the electric wire with terminal. ..

The method for manufacturing an electric wire with a terminal according to the present invention as set forth in claim 5 made in order to solve the above-mentioned problem is the second terminal expanded shape part in the terminal chain body drawn out from the terminal reel as set forth in claim 3. And a step of crimping the cut terminal and the end of the electric wire while cutting the disconnectable portion according to the type of the electric wire.

According to the present invention having such a feature of claim 5, since the terminal reel according to claim 3 is used, necessary terminals can be supplied at a required timing in the production of the electric wire with a terminal. ..

According to the present invention, it is possible to improve the manufacturability and reduce the cost of manufacturing an electric wire with a terminal.

It is a mimetic diagram showing an example of a manufacturing method of a chain of terminals, a terminal reel, and an electric wire with a terminal of the present invention. It is a top view of a carrier and a terminal deployment shape part in a terminal chain. FIG. 3 is a plan view showing a state in which an electric contact portion is formed on the chain of terminals of FIG. 2. FIG. 4 is a plan view of a state in which a cuttable portion is shown for the terminal chain of FIG. 3. It is a top view of the state which cut|disconnected the cutting|disconnection possible part with respect to the terminal chain of FIG. FIG. 6 is a perspective view of a state in which a barrel portion is formed on the chain of terminals of FIG. 5.

The method of manufacturing an electric wire with a terminal includes a step of manufacturing a terminal reel formed by winding a terminal chain, a step of transporting the terminal reel to a wire harness manufacturing site, and a second terminal expansion in a terminal chain drawn from the terminal reel. And a step of crimping the cut terminal and the end of the electric wire while cutting the cuttable portion of the shaped portion according to the type of the electric wire. The terminal chain has a carrier and a large number of terminal expanded shapes, and the terminal expanded shapes have a first expanded shape used as an electrical contact portion and a second expanded shape used as a barrel. .. The second expanded shape portion has a severable portion capable of severing both ends in the extending direction of the carrier according to the type of the electric wire.

Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of a method for manufacturing a terminal chain, a terminal reel, and an electric wire with a terminal according to the present invention. 2 is a plan view of the carrier and the terminal expanded shape portion of the terminal chain, FIG. 3 is a plan view of the terminal chain of FIG. 2 in which electric contact portions are formed, and FIG. 4 is a terminal chain of FIG. 4 is a plan view showing a state in which the cuttable portion is shown, FIG. 5 is a plan view showing a state in which the cuttable portion is cut from the chain of terminals in FIG. 4, and FIG. 6 is a barrel portion formed in the chain of terminals in FIG. It is a perspective view of a state.

<About manufacturing method of electric wire 1 with terminal>
Referring to FIG. 1, a method of manufacturing an electric wire with a terminal 1 according to an embodiment of the present invention is a method for manufacturing the electric wire with a terminal 1, and includes a first step of manufacturing a terminal reel 2 and a terminal reel 2. The second step of carrying to the wire harness manufacturing site 3 and the third step of processing the terminal chain 4 drawn from the terminal reel 2 and then crimping the terminal of the electric wire 5 and the terminal 6 (see FIG. 6). Including, the electric wire with terminal 1 is manufactured.

<About the first step>
In FIG. 1, in the first step, the metal strip plate 8 pulled out from the reel 7 is supplied to the first manufacturing apparatus 9. The metal strip plate 8 is a base member for manufacturing the terminal 6 (see FIG. 6), and is formed in a conductive metal strip plate shape. The metal strip plate 8 has a plate thickness that is the thickness of each wall of the terminal 6, and a plate width that corresponds to the size required for forming the later-described terminal development shape portion 12 and the carrier 11 (see FIG. 2) of the terminal 6. Secured. The length of the metal strip 8 in the extending direction is equal to or longer than that of the general terminal reel 2.

<Regarding the punching section 10 of the first manufacturing apparatus 9>
In FIG. 1, in the punching section 10 of the first manufacturing apparatus 9, the metal strip 8 supplied thereto is punched into a state as shown in FIG. When the metal strip 8 is punched out, this punched portion is formed as a terminal chain 4a. The terminal chain 4a includes a carrier 11 and a large number of terminal development shapes 12. If the arrow P in FIG. 2 is defined as the extending direction of the metal strip plate 8 and the carrier 11, and the arrow Q is defined as the width direction of the metal strip plate 8, the terminal development shape portion 12 is a carrier extending in the arrow P direction. It is formed so as to project in a direction orthogonal to 11 (direction of arrow Q). Further, the terminal expanded shape portion 12 is formed by a large number of pieces arranged in the arrow P direction. The terminal expanded shape part 12 includes a first expanded shape part 13 used as an electric contact part 24 (see FIG. 6) described later and a second expanded shape part 14 used as a barrel part 30 (see FIG. 6) described later. It is formed to have a shape as shown in FIG. 2 (the shape is an example).

<Regarding the first developed shape part 13>
In FIG. 2, the first expanded shape portion 13 is formed in an expanded shape of an electric contact portion 24 (see FIGS. 3 and 6) described later. Since the electric contact portion 24 of this embodiment is female, it has a first portion 15 that is a rectangular tubular shape and a second portion 16 that is an elastic contact piece 24a (see FIG. 6) described later. In this embodiment, the external shape of the electric contact portion 24 is shown in a simplified form, so that the shape is actually a little more complicated. In the present embodiment, the electrical contact portion 24 is female, but it is not limited to this and may be male.

<Regarding the second expanded shape portion 14>
In FIG. 2, the second expanded shape portion 14 is formed in a shape in which a barrel portion 30 (see FIG. 6) described later is expanded. Since the barrel portion 30 of this embodiment has two wire barrels 30a and insulation barrels 30b, the second expanded shape portion 14 has a first portion 17 and a second portion 18.

The first portion 17 is a portion that becomes the wire barrel 30a (see FIG. 6), is long in the direction orthogonal to the terminal axis (the axis coinciding with the arrow Q direction) (coincident with the arrow P direction), and The width along the terminal axis is formed to be wider than the width of the second portion 18. Three serrations 19 are formed on the inner surface of the first portion 17 (the surface on the side seen in FIG. 2) at equal intervals so as to cross the terminal shaft. The serration 19 is formed in a straight groove shape such that the serration end portion is located at a position spaced from the end portion 20 of the first portion 17 by a predetermined distance.

The second portion 18 is a portion that becomes the insulation barrel 30b (see FIG. 6), and is long in the direction orthogonal to the terminal axis (in the present embodiment, it has the same length as the first portion 17). In addition, the width along the terminal axis is formed to be narrower than the width of the first portion 17. The inner surface (the surface on the side visible in FIG. 2) of the second portion 18 is formed into a flat surface without any unevenness. The reference numeral 21 in the second portion 18 indicates an end portion.

<Cuttable part 22>
In FIG. 2, a cuttable portion 22 is formed on the first portion 17 and the second portion 18. The cuttable portion 22 makes it possible to cut a predetermined range from the end portion 20 of the first portion 17 and the end portion 21 of the second portion 18 according to the type of the electric wire 5 (5a to 5c; see FIG. 1). Is formed in the part for. In other words, the end portion 20 and the end portion 21 are formed in a portion such that a range indicated by the dimension L can be cut toward the terminal shaft. Even if the cutting is performed by the cuttable portion 22, the remaining portion, that is, the barrel portion 30 (see FIG. 6) can sufficiently exhibit its function.

<Regarding the molding unit 23 of the first manufacturing apparatus 9>
In FIG. 1, in the first step, processing by the punching section 10 of the first manufacturing apparatus 9 is followed by processing by the molding section 23 of the first manufacturing apparatus 9 as well. In the forming part 23, the first developed shape part 13 shown in FIG. 2 is bent or the like to be processed into the female electric contact part 24 shown in FIG. Reference numeral 24a in the electric contact portion 24 indicates an elastic contact piece that comes into contact with the male electric contact portion of the mating terminal (not shown). When the processing up to the electrical contact portion 24 is completed, the terminal chain body 4b is formed (the processing in the molding section 23 turns the terminal chain body 4a in FIG. 2 into the terminal chain body 4b in FIG. 3). As can be seen from FIG. 3, the terminal chain 4b is the one in which the second unfolded shape portion 14 is left unfolded. Reference numeral 6a in FIG. 3 indicates a terminal in the first step. The terminals 6a are all formed in the same shape and are connected to the carrier 11, respectively.

<About terminal reel 2>
In FIG. 1, when the terminal chain body 4b in which the second unfolded shape portion 14 is in the unfolded state is wound around the reel body 25 after the processing in the molding section 23 is finished, the steps until the terminal reel 2 is manufactured, that is, The first step is completed.

<About the second step>
In FIG. 1, the second step is a step of transporting the terminal reel 2 to the wire harness manufacturing site 3 as described above (when the first manufacturing apparatus 9 is installed in the wire harness manufacturing site 3, Of course, there is no need to carry the second step).

<About the third step>
In FIG. 1, in the third step, after the terminal chain 4 (terminal chain 4b) pulled out from the terminal reel 2 as described above is processed, the terminal 6 (see FIG. 6) and the end of the electric wire 5 are crimped. It is a process. The third step will be described in more detail. While cutting the disconnectable portion 22 (see FIGS. 2 to 4) of the terminal chain 4b pulled out from the terminal reel 2 according to the types of the electric wires 5a to 5c, the cutting is performed. This is a step of crimping the formed terminal 6 and the ends of the electric wires 5a to 5c. The third step is performed by disposing the second manufacturing apparatus 26 on the line side of the wire harness manufacturing site 3. The second manufacturing apparatus 26 includes a cutting processing section 27, a bending processing section 28, and a pressure bonding section 29.

<Regarding the cutting processing section 27 of the second manufacturing apparatus 26>
In FIG. 1, in the cutting processing unit 27 of the second manufacturing apparatus 26, the following processing is performed on the cuttable portion 22 of the terminal chain 4b supplied thereto. That is, the cutting is performed using a cutting blade (not shown) to remove the shaded portion 31 shown in FIG. When the shaded portion 31 is removed, the terminals 6a, 6b and 6c are formed as shown in FIG.

In FIGS. 5 and 1, the terminal 6a is not cut. Therefore, it is in the same state as the terminal 6a in the first step. In order to correspond to the L-sized (thick size) electric wire 5a, the terminal 6a is left in a state where the first portion 17 and the second portion 18 of the second expanded shape portion 14 are long.

The terminal 6b has been cut and removed as described above. In order to correspond to the M size (intermediate size) electric wire 5b, the terminal 6b is in a state where the first portion 17 of the second expanded shape portion 14 is slightly short and the second portion 18 is long. Will be

The terminal 6c has been cut and removed similarly to the terminal 6b. The terminal 6c is in a state in which the first portion 17 and the second portion 18 of the second expanded shape portion 14 are short in order to correspond to the S size (thin size) electric wire 5c.

In this embodiment, three types of terminals 6a to 6c shown in FIG. 5 are formed in order to correspond to the L-size to S-size electric wires 5a to 5c, but the number of types here is an example. I shall.

Reference numeral 4c in FIG. 5 indicates the terminal chain after the cutting and removal. The state of the chain of terminals 4c is formed on the line side of the wire harness manufacturing site 3 (see FIG. 1).

<Regarding the bending section 28 of the second manufacturing apparatus 26>
In FIG. 1, the bending process section 28 of the second manufacturing apparatus 26 performs the following processes. That is, using a mold (not shown), the first portion 17 and the second portion 18 of the second expanded shape portion 14 of FIG. 5 are processed so as to be bent into a substantially U-shape. When this processing is performed, the terminal 6d, the terminal 6e, and the terminal f shown in FIG. 6 are formed (when collectively referred to, the reference numeral is simply 6).

6 and 5, the terminal 6d is obtained by bending the terminal 6a for accommodating the L-sized electric wire 5a. Further, the terminal 6e is obtained by bending the terminal 6b in order to correspond to the M size electric wire 5b (see FIG. 1). Further, the terminal 6f is obtained by bending the terminal 6c for making it correspond to the S-size electric wire 5c (see FIG. 1). By performing the bending process, the wire barrel 30a and the insulation barrel 30b are formed as the barrel portion 30.

In the terminal 6d, the wire barrel 30a and the insulation barrel 30b are left in a long state. Further, the terminal 6e remains in a state where the wire barrel 30a is slightly shorter and the insulation barrel 30b is longer. The terminal 6f is in a state where the wire barrel 30a and the insulation barrel 30b are short.

Incidentally, the reference numeral 4d in FIG. 6 indicates the terminal chain after the above bending work. The terminal chain 4d (terminal chain 4) has a final shape immediately before the crimping of the wire 5 to the end (delay discrimination).

<Regarding the crimping section 29 of the second manufacturing apparatus 26>
In FIG. 1, in the crimping section 29 of the second manufacturing apparatus 26, the following processing is performed on the terminal chain body 4d supplied thereto. That is, the process of separating the terminal 6 shown in FIG. 6 from the carrier 11 and crimping the separated terminal 6 and the end of the electric wire 5 is performed. By crimping the terminal 6 and the end of the electric wire 5, the electric wire with terminal 1 is manufactured as shown in FIG. The manufactured electric wire with a terminal 1 is put into a line at the wire harness manufacturing site 3.

The crimping section 29 of the second manufacturing apparatus 26 has basically the same configuration and structure as a known crimping machine.

<Effects of the method for manufacturing the terminal chain 4, the terminal reel 2, and the electric wire 1 with terminals>
As described above with reference to FIG. 1 to FIG. 6, according to the embodiment of the present invention, since the second deployable shape portion 14 of the terminal chain 4 has the cuttable portion 22, one The terminal chain 4 can have a plurality of types of terminals 6 according to the type of the electric wire 5. In the crimping section 29 of the second manufacturing apparatus 26, the number of setup changes for crimping the terminal 6 can be reduced as compared with the conventional case. As a result, not only can workability and manufacturability be improved, but also the number of molds used in the pressure-bonding portion 29 can be reduced, and the cost can be reduced. Further, in connection with the manufacture of the electric wire with terminal 1, the necessary terminal 6 can be supplied at the necessary timing, which can contribute to the reduction of the lead time of parts. Further, it is possible to contribute to reduction of incidental costs of transportation, reduction of storage space, and facilitation of inventory management.

Needless to say, the present invention can be modified in various ways without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1... Electric wire with terminal, 2... Terminal reel, 3... Wire harness manufacturing site, 4... Terminal chain, 5... Electric wire, 6... Terminal, 7... Reel, 8... Metal strip, 9... First manufacturing device, 10... Punching part, 11... Carrier, 12... Terminal development shape part, 13... First development shape part, 14... Second development shape part, 15, 17... First part, 16, 18... Second part, 19... Serration, 20, 21... End part, 22... Cuttable part, 23... Molding part, 24... Electric contact part, 25... Reel body, 26... Second manufacturing device, 27... Cutting process part, 28... Bending Processing part, 29... Crimping part, 30... Barrel part, 31... Diagonal part

Claims (5)

A carrier and a large number of terminal development shapes connected to the carrier are formed on a metal strip plate for manufacturing a terminal in a terminal with an electric wire, and the terminal development shapes are used as electric contact parts. And a second expanded shape part used as a barrel part, and the second expanded shape part is capable of cutting both ends in the extending direction of the carrier according to the type of the electric wire. A terminal chain body having a portion. The chain of terminals according to claim 1,
The barrel portion corresponding to the cuttable portion is a wire barrel and/or an insulation barrel. A terminal reel, wherein the chain terminal body is wound around a reel body while the second unfolded shape portion of the terminal chain body according to claim 1 or 2 is left in a unfolded state. A step of manufacturing the terminal reel according to claim 3, a step of transporting the terminal reel to a wire harness manufacturing site, and a disconnectable portion of the second terminal expanded shape portion in the terminal chain drawn out from the terminal reel. A step of crimping the cut terminal and the end of the electric wire while cutting the electric wire according to the type of the electric wire. A step of crimping the cut terminal and the end of the electric wire while cutting the cuttable portion of the second terminal expanded shape portion of the terminal chain drawn out from the terminal reel according to claim 3 according to the type of the electric wire. A method of manufacturing an electric wire with a terminal, comprising:

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