JP2017027687A - Wire with crimp terminal and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire with a crimp terminal and a wire harness which can satisfactorily perform electrical connection.SOLUTION: The wire harness is configured to include one or a plurality of electric wires with a crimp terminal. In this wire with a crimp terminal, a crimp terminal 26 made of dissimilar metal different in material from that of a bar-shaped conductor 29 is connected at a bar-shaped conductor exposed portion 28 which is formed by removing an insulator 30 of an aluminum electric wire including the bar-shaped conductor 29 made of aluminum or aluminum alloy and having a single core and the insulator 30 covering the bar-shaped conductor 29. In the bar-shaped conductor exposed portion 28, a conductor-side serration portion 31 which becomes a groove-shaped portion having an edge is formed on this outer peripheral surface. Besides this, a terminal side serration portion which becomes a groove-shaped portion having an edge may be formed also on the side of the crimp terminal 26. It is preferable that the terminal side serration portion is formed in an irregular shape with respect to the conductor side serration portion 31.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an electric wire with a crimp terminal formed by connecting a crimp terminal to a bar-shaped conductor exposed portion formed by removing an insulator of the electric wire, and a wire harness including the electric wire with the crimp terminal.

  The terminal fitting disclosed in the following Patent Document 1 is made of a copper alloy and is provided at the end of an aluminum electric wire. The aluminum electric wire includes a stranded wire conductor made of aluminum and an insulator covering the stranded wire conductor. Then, the stranded wire conductor is exposed at a predetermined length from the end of the aluminum electric wire, and the terminal fitting is attached to the exposed portion. Specifically, a bottomed cylindrical closed barrel portion is formed on the terminal fitting, a stranded conductor is inserted into the closed barrel portion, and after insertion, the intermediate portion of the closed barrel portion is added from the outside to the inside. It is attached by crimping by tightening.

  In electrical connection between the aluminum stranded wire conductor and the closed barrel portion, it is necessary to break the oxide film generated on the aluminum stranded wire conductor, and thus caulking is performed so as to achieve strong pressure bonding. Thus, ingenuity is necessary to perform electrical connection satisfactorily.

JP 2009-230997 A

  In the above prior art, it is an electrical connection between an aluminum stranded conductor and a closed barrel portion which is a different metal with respect to the stranded conductor, but the conductor structure is not a stranded conductor but an aluminum bar conductor In this case, the electrical connection between the aluminum rod-shaped conductor and the closed barrel portion has the following problems. In other words, a single-core aluminum rod-shaped conductor is harder than a stranded wire, is not easily crushed when caulked, and has a small friction that destroys the oxide film from a microscopic viewpoint. A problem is that the general connection becomes insufficient.

  This invention is made | formed in view of an above-described situation, and makes it a subject to provide the electric wire with a crimp terminal and wire harness which can perform an electrical connection favorable.

  The electric wire with a crimp terminal according to claim 1 of the present invention, which has been made to solve the above problems, is an electric wire comprising a rod-shaped conductor formed as a single core and an insulator covering the rod-shaped conductor. In the electric wire with a crimping terminal formed by connecting a crimping terminal to the bar-shaped conductor exposed part formed by removing the conductor, a conductor-side serration part that becomes a groove-shaped part with an edge is formed on the outer peripheral surface of the bar-shaped conductor exposed part It is characterized by doing.

  According to the present invention having such a feature, when the rod-shaped conductor exposed portion and the crimp terminal are connected, the edge of the conductor-side serration portion in the rod-shaped conductor exposed portion is connected in a state of biting into the crimp terminal, And since contact and friction come to occur in the process of this biting, as a result, electrical connection can be performed satisfactorily.

  According to a second aspect of the present invention, in the electric wire with a crimp terminal according to the first aspect, a smooth surface portion is formed on the outer peripheral surface of the bar-shaped conductor exposed portion separately from the conductor-side serration portion. And

  According to the present invention having such a feature, since a smooth surface portion is formed on the outer peripheral surface of the bar-shaped conductor exposed portion separately from the conductor side serration portion, for example, the terminal side serration portion is formed on the crimp terminal side. If the connection is made in such a state, the edge of the terminal-side serration portion is connected in such a state that it bites into the smooth surface portion of the bar-shaped conductor exposed portion, and contact and friction occur during this biting process. Therefore, the oxide film on the exposed portion of the rod-shaped conductor can be destroyed. If the oxide film can be destroyed, as a result, electrical connection can be performed well.

  According to a third aspect of the present invention, in the electric wire with a crimp terminal according to the first or second aspect, a groove with an edge is also formed on the inner surface of the barrel portion of the crimp terminal as a portion to crimp the bar-shaped conductor exposed portion. A terminal-side serration portion that becomes a shape portion is formed.

  According to the present invention having such a feature, since the terminal-side serration portion is also formed on the side of the crimp terminal, when the dissimilar metals of the rod-shaped conductor exposed portion and the crimp terminal are connected, the terminal-side serration portion The edge of the conductor side serration portion is connected to the crimp terminal as in the present invention according to claim 1 or 2 on the side of the rod-shaped conductor exposed portion. It is connected in a state that bites into. In the process of biting in, contact and friction occur, so that the oxide film on the bar-shaped conductor exposed portion can be destroyed. If the oxide film can be destroyed, as a result, electrical connection can be performed well.

  According to a fourth aspect of the present invention, in the electric wire with a crimp terminal according to the third aspect, the terminal-side serration portion is formed in an irregular shape with respect to the conductor-side serration portion.

  According to the present invention having such a feature, since the terminal side serration portion and the conductor side serration portion are formed in an irregular shape, the edge of the terminal side serration portion is in a state in which the edge of the terminal side serration surely bites into the bar-shaped conductor exposed portion. In addition, the edges of the conductor-side serrations are also connected in a state of securely biting into the crimp terminal. In the process of biting in, contact and friction are generated, so that the oxide film on the bar-shaped conductor exposed portion can be reliably destroyed. If the oxide film can be reliably destroyed, as a result, electrical connection can be made even better.

  According to a fifth aspect of the present invention, in the electric wire with a crimp terminal according to the third or fourth aspect, a smooth surface portion is formed on the inner surface of the barrel portion separately from the terminal-side serration portion. To do.

  According to the present invention having such a feature, since a smooth surface portion is formed on the inner surface of the barrel portion separately from the terminal side serration portion, the connection between the dissimilar metals of the bar-shaped conductor exposed portion and the crimp terminal is achieved. If done, the edge of the conductor side serration part is connected in a state of biting into the smooth surface part formed on the inner surface of the barrel part, and contact and friction will occur in the process of this biting, so that the rod shape The oxide film on the exposed conductor can be destroyed. If the oxide film can be destroyed, as a result, electrical connection can be performed well.

  According to a sixth aspect of the present invention, in the electric wire with a crimp terminal according to the first, second, third, fourth, or fifth aspect, the rod-shaped conductor is made of aluminum or an aluminum alloy, and the crimp terminal is the rod-shaped conductor. It is characterized by being made of a different kind of metal.

  According to the present invention having such a feature, when the dissimilar metals of the rod-shaped conductor exposed portion and the crimp terminal are connected, the edge of the conductor-side serration portion in the rod-shaped conductor exposed portion bites into the crimp terminal. Then, contact and friction are generated in the process of biting, so that the oxide film on the bar-shaped conductor exposed portion can be broken. If the oxide film can be destroyed, as a result, electrical connection can be performed well.

  Moreover, the wire harness of this invention of Claim 7 made | formed in order to solve the said subject is a wire harness which is wired by the motor vehicle and makes an electrical connection, As a structure of the said wire harness, it is Claim 1. One or a plurality of electric wires with crimp terminals according to 2, 3, 4, 5 or 6 are provided.

  According to the present invention having such a feature, since the wire harness is configured by including one or a plurality of electric wires with crimp terminals according to claim 1, 2, 3, 4, 5 or 6, as a wire harness. Is also effective.

  According to this invention described in Claims 1-5, there exists an effect that the electric wire with a crimp terminal which can perform an electrical connection favorably can be provided. In addition, according to the present invention described in claim 6, it is possible to provide an electric wire with a crimping terminal that can perform this connection satisfactorily even if there is an electrical connection part between different metals. Play. Furthermore, according to this invention described in Claim 7, since an electric wire with a crimp terminal is provided, there exists an effect that a better wire harness can be provided.

It is a figure which shows the wire harness of this invention, (a) is a schematic diagram which shows the wiring state of a high voltage wire harness, (b) shows the wiring state of the low voltage wire harness different from (a). It is a schematic diagram shown. It is a figure which shows the electric wire with a crimp terminal of this invention which comprises the wire harness of FIG. 3A is a cross-sectional view taken along line AA, and FIG. 3B is a cross-sectional view taken along line BB. FIGS. 3A and 3B are diagrams illustrating a main part of FIG. 2, in which FIG. 3A is an enlarged view of a bar-shaped conductor exposed portion, and FIGS. 3B and 3C are explanatory diagrams relating to connection between the bar-shaped conductor exposed portion and a closed barrel portion; It is a figure which shows the principal part of FIG. 2, (a) And (b) is explanatory drawing which concerns on the connection of a rod-shaped conductor exposed part and a closed barrel part, and the connection of a strand wire conductor exposed part and a closed barrel part. (A) is sectional drawing of a crimp terminal, (b) is sectional drawing of a relay crimp terminal. It is an expanded sectional view which shows the connection state of a rod-shaped conductor exposed part and a closed barrel part. It is a figure which shows the electric wire with a crimp terminal of the shape match | combined with the routing route. It is a figure which concerns on a wire harness, (a) is a figure which shows the example of a packing state and a transport state, (b) is a figure which shows the example of a wiring state. It is a figure which shows the 1st modification of a rod-shaped conductor exposed part and a closed barrel part, (a) is sectional drawing before pressure bonding, (b) is sectional drawing after pressure bonding. It is a figure which shows the 2nd modification of a rod-shaped conductor exposed part and a closed barrel part, (a) is sectional drawing before pressure bonding, (b) is sectional drawing after pressure bonding. It is a figure which shows the 3rd modification of a rod-shaped conductor exposed part and a closed barrel part, (a) is sectional drawing before pressure bonding, (b) is sectional drawing after pressure bonding. It is a figure which shows the 4th modification of a rod-shaped conductor exposed part and a closed barrel part, (a) is sectional drawing before pressure bonding, (b) is sectional drawing after pressure bonding. It is a figure which shows the 5th modification of a rod-shaped conductor exposed part and a closed barrel part, (a) is sectional drawing before pressure bonding, (b) is sectional drawing after pressure bonding.

  The wire harness includes one or more electric wires with crimp terminals. This electric wire with crimp terminal is a position of a bar-shaped conductor exposed portion formed by removing an insulator of an aluminum electric wire comprising a bar-shaped conductor made of aluminum or aluminum alloy and an insulator covering the bar-shaped conductor. In addition, a crimp terminal made of a dissimilar metal whose material is different from that of the rod-shaped conductor is connected. The bar-shaped conductor exposed portion is formed with a conductor-side serration portion that becomes a groove-shaped portion with an edge on the outer peripheral surface. In addition, the terminal side serration part which becomes a groove-shaped part with an edge may also be formed in the crimp terminal side. It is preferable that the terminal-side serration portion is formed in an irregular shape with respect to the conductor-side serration portion.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a diagram showing a wire harness according to the present invention, in which (a) is a schematic diagram showing a wiring state of a high-voltage wire harness, and (b) is a wiring diagram of a low-voltage wire harness different from (a). It is a schematic diagram which shows a search state. 2 is a view showing an electric wire with a crimp terminal of the present invention constituting the wire harness of FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA and BB of FIG.

  4 is a diagram showing the main part of FIG. 2, (a) is an enlarged view of the bar-shaped conductor exposed part, (b) and (c) are explanatory diagrams relating to the connection between the bar-shaped conductor exposed part and the closed barrel part. It is. FIG. 5 is a diagram showing the main part of FIG. 2, and (a) and (b) relate to the connection between the bar-shaped conductor exposed part and the closed barrel part and the connection between the stranded conductor exposed part and the closed barrel part. It is explanatory drawing.

  6A is a cross-sectional view of the crimp terminal, FIG. 6B is a cross-sectional view of the relay crimp terminal, FIG. 7 is an enlarged cross-sectional view showing a connection state between the bar-shaped conductor exposed portion and the closed barrel portion, and FIG. The figure which shows the electric wire with a crimp terminal of the shape according to the path | route, FIG. 9 is a figure which concerns on a wire harness, (a) is a figure which shows the example of a packing state and a transport state, (b) is an example of a wiring state FIG.

  In the present embodiment, the present invention is applied to a wire harness routed in a hybrid vehicle (which may be an electric vehicle or a general vehicle that runs on an engine).

<About hybrid vehicle 1>
In FIG. 1A, reference numeral 1 indicates a hybrid vehicle. The hybrid vehicle 1 is a vehicle that mixes and drives two powers of an engine 2 and a motor unit 3, and the motor unit 3 is supplied with electric power from a battery 5 (battery pack) via an inverter unit 4. . The engine 2, the motor unit 3, and the inverter unit 4 are mounted in the engine room 6 where the front wheels and the like are located in the present embodiment. Further, the battery 5 is mounted on the rear part 7 of the vehicle where there is a rear wheel or the like (it may be mounted in a vehicle room existing behind the engine room 6).

  The motor unit 3 and the inverter unit 4 are connected by a high-voltage (high voltage) wire harness 8. The battery 5 and the inverter unit 4 are also connected by a high-voltage wire harness 9. The intermediate portion 10 of the wire harness 9 is routed under the vehicle floor 11 in the vehicle (in the vehicle body). Further, the intermediate portion 10 is routed substantially in parallel along the vehicle underfloor 11. The vehicle underfloor 11 is a known body (vehicle body) and a so-called panel member, and a through hole is formed at a predetermined position. The wire harness 9 is inserted into the through hole in a watertight manner.

  The wire harness 9 and the battery 5 are connected via a junction block 12 provided in the battery 5. External connection means such as a shield connector 14 disposed on the harness terminal 13 on the rear end side of the wire harness 9 is electrically connected to the junction block 12. Further, the wire harness 9 and the inverter unit 4 are electrically connected via an external connection means such as a shield connector 14 disposed on the harness terminal 13 on the front end side.

  The motor unit 3 includes a motor and a generator. The inverter unit 4 includes an inverter and a converter. The motor unit 3 is formed as a motor assembly including a shield case. The inverter unit 4 is also formed as an inverter assembly including a shield case. The battery 5 is of Ni-MH type or Li-ion type, and is formed as a module. It is also possible to use a power storage device such as a capacitor. The battery 5 is not particularly limited as long as it can be used for the hybrid vehicle 1 and the electric vehicle.

  In FIG. 1B, reference numeral 15 indicates a wire harness. The wire harness 15 is a low voltage (for low voltage), and electrically connects the low voltage battery 16 at the rear part 7 of the hybrid vehicle 1 and the auxiliary device 18 (equipment) mounted on the front part 17 of the vehicle. Provided to connect. The wire harness 15 is routed through the vehicle underfloor 11 as in the case of the wire harness 9 of FIG. 1A (this is an example and may be routed through the passenger compartment side).

  As shown in FIGS. 1A and 1B, high-voltage wire harnesses 8 and 9 and a low-voltage wire harness 15 are routed in the hybrid vehicle 1. Although the present invention can be applied to any wire harness, a low voltage wire harness 15 will be described below as a representative example.

<About the wire harness 15>
In FIG. 1 (b), a long wire harness 15 routed through the vehicle underfloor 11 includes a harness body 19 and auxiliary equipment connecting portions 20 respectively disposed at both terminals of the harness body 19. It is prepared for. The wire harness 15 includes a fixing member (for example, a clamp C shown in FIG. 9) for routing at a predetermined position and a water stop member (for example, a grommet) (not shown).

<About the structure of the wire harness 15>
The harness body 19 includes one or more electric wires with crimp terminals 21 (see FIG. 2) according to the present invention and an exterior member 22 (see FIG. 9) for accommodating and protecting the one or more electric wires with crimp terminals 21. ). In addition, although it is two in this embodiment regarding the number of the electric wires 21 with crimp terminals, this is an example. Moreover, the electric wire 21 with a crimp terminal may be called a conductive path. In addition, regarding the configuration and structure of the exterior member 22, one that can accommodate and protect the high-voltage wire harness 9 together may be adopted.

  First, the configuration and structure of the wire 21 with the crimp terminal in the harness body 19 will be described with reference to the drawings.

<About wire 21 with crimp terminal>
In FIG. 2, this wire 21 with a crimp terminal is configured as follows. That is, when the electric wire 21 with a crimp terminal is seen in the illustrated amount of the present embodiment, a plurality of divided conductive paths 23 (23a to 23d) and a plurality of connecting members 24 that connect the adjacent divided conductive paths 23 to each other. (24a-24c), a relay crimp terminal 25 (crimp terminal) that is a direct connection portion between the divided conductive path 23 and the connecting member 24, and a crimp terminal 26 provided at each end of the electric wire 21 with the crimp terminal. Consists of. The electric wire 21 with a crimp terminal is long although it is difficult to understand in FIG.

<Differences between the wire 21 with crimp terminal and a general conductive path>
In this embodiment, the electric wire 21 with a crimp terminal includes four or more divided conductive paths 23 and a number of connecting members 24 obtained by subtracting 1 from the number of the divided conductive paths 23. Therefore, it turns out that the electric wire 21 with a crimp terminal of a present Example consists of many structures, and is not a mere single-conductive path. Moreover, the electric wire 21 with a crimp terminal is not, for example, a conductive path having a three-part configuration having a first conductive path as a main and second conductive paths connected to both ends of the first conductive path. I understand that. Furthermore, as will be understood from the following description, the electric wire 21 with a crimp terminal has a connecting member 24 disposed at least at one place within a range routed along the vehicle underfloor 11 (see FIG. 1). It can be seen that the conductive path, i.e., it is not just a single conductive path within the above range.

<About the split conductive path 23 (aluminum wire)>
In FIG. 2 thru | or FIG. 5, the division | segmentation conductive path 23 (23a-23d) is formed as a part which occupies most of the electric wires 21 with a crimp terminal. Such a divided conductive path 23 includes a main body portion 27 and rod-shaped conductor exposed portions 28 (see FIGS. 4 and 5) located at both ends of the main body portion 27.

<About the main body 27>
The main body 27 includes a conductive rod-shaped conductor 29 and an insulating insulator 30 that covers the rod-shaped conductor 29. The divided conductive path 23 (main body part 27) is formed to a length necessary for holding the shape along the routing path. That is, the divided conductive paths 23a to 23d are each formed with an appropriate length. In the present embodiment, the divided conductive paths 23b and 23c are formed so as to be routed along the vehicle floor bottom 11. Such divided conductive paths 23b and 23c are formed in a relatively longer state than the remaining divided conductive paths 23a and 23d.

<About the rod-shaped conductor 29>
In FIG. 3, the rod-shaped conductor 29 is manufactured from aluminum or an aluminum alloy. Aluminum and aluminum alloys have the advantage of being inexpensive and lightweight. The rod-shaped conductor 29 may be called an aluminum rod-shaped conductor. The rod-shaped conductor 29 is formed as a round bar wire having a circular cross section (the cross sectional shape is an example). The rod-shaped conductor 29 is formed so as to have a straight shape. The round bar wire is sometimes called a round single core wire or a single core. The rod-shaped conductor 29 is formed so as to have rigidity capable of holding the shape along the routing path. The rigidity of the rod-shaped conductor 29 is such that plastic deformation is maintained even when a certain external force is applied. Therefore, the rod-shaped conductor 29 is harder than the stranded conductor 33 described later of the connecting member 24. (In the present embodiment, the rod-shaped conductor 29 (bar-shaped conductor exposed portion 28) is harder in terms of material than the relay crimp terminal 25 and the crimp terminal 26).

<Insulator 30>
The insulator 30 is formed as a cover having a circular cross section by extrusion molding on the outer peripheral surface of the rod-shaped conductor 29 using a thermoplastic resin material. Or it forms as a coating | cover which covers the outer peripheral surface of the rod-shaped conductor 29 using a well-known heat shrinkable tube. The insulator 30 is formed with a predetermined thickness. As the thermoplastic resin, various known types can be used. For example, a polymer material such as polyvinyl chloride resin, polyethylene resin, or polypropylene resin is appropriately selected.

<Regarding the bar-shaped conductor exposed portion 28>
4 and 5, the bar-shaped conductor exposed portion 28 is formed as a connection portion with the relay crimp terminal 25 or the crimp terminal 26. The rod-shaped conductor exposed portion 28 is formed by removing the insulator 30 at the end of the main body portion 27 with a predetermined length to expose the rod-shaped conductor 29. A conductor-side serration portion 31 is formed on the outer peripheral surface of the rod-shaped conductor exposed portion 28.

<About the conductor-side serration portion 31>
The conductor side serration portion 31 is formed by processing the outer peripheral surface of the rod-shaped conductor exposed portion 28. The conductor-side serration portion 31 is formed to be a groove-shaped portion with an edge. The reference sign 31a indicates a valley portion, and the reference sign 31b indicates a peak portion. The conductor-side serration portion 31 is formed such that the valley portion 31a and the crest portion 31b are located on a plane orthogonal to the central axis CL of the crimped terminal-attached electric wire 21 (this is an example, and examples of other shapes will be described later) It shall be). The crest portion 31a is formed to be an edge. The conductor side serration part 31 is formed so that the appearance is substantially bellows-like. The conductor-side serration portion 31 is formed to be a plurality of concentric grooves (non-spiral grooves).

<About the connecting member 24>
2, 3, and 5, the connecting member 24 (24 a to 24 c) includes a main body portion 32 and a stranded wire conductor exposed portion 33 (see FIG. 5) located at both ends of the main body portion 32. Composed. The connecting member 24 is formed as a member having a rigidity lower than that of the divided conductive path 23 and capable of being contracted and bendable in a predetermined direction.

<About the main body 32>
The main body 32 includes a conductive and flexible stranded conductor 34 and an insulating insulator 35 that covers the stranded conductor 34. The connecting member 24 is formed to a length necessary for exhibiting the function described below. Moreover, it arrange | positions in a position required in order to exhibit a function. The connecting member 24 (main body portion 32) of this embodiment is formed shorter than the divided conductive path 23. Moreover, the connecting member 24 is formed in such a length that the proportion of the crimping terminal-equipped electric wire 21 is reduced.

<About the strand conductor exposed portion 33>
In FIG. 5, the stranded conductor exposed portion 33 is formed as a connection portion with the relay crimp terminal 25. The stranded wire conductor exposed portion 33 is formed by removing the insulator 35 at the end of the main body portion 32 at a predetermined length and exposing the stranded wire conductor 34.

<About the function of the connecting member 24>
The connecting member 24 is formed to be capable of bending in two directions or 360 degrees. Specifically, for example, it is possible to bend in the upward direction and the downward direction, or bend in the left direction and the right direction, and further bendable in the direction of 360 degrees. For example, it is possible to bend backwards on the front side and backwards on the back side, or bend diagonally forward on the front side and diagonally forward on the back side. It may be formed so that it can be bent. The connecting member 24 is formed so that various bendings are possible.

  The connecting member 24 (24a to 24c) is applied as means for exerting the following functions. Specifically, it is applied as a bending means, a bending means, a dimension error absorbing means, a resonance avoiding means, and a vibration absorbing means.

  When the connecting member 24 is applied as a bending means, the function of enabling the bending in the above two directions or 360 degrees (bending that can be easily bent back) is performed. Further, when applied as a bending means, the function of enabling compactness at the time of packing before transportation to the hybrid vehicle 1 or at the time of transportation is exhibited. Further, when applied as a dimensional error absorbing means, a function of enabling dimensional error absorption during routing is exhibited. Further, when applied as a resonance avoiding means, the function of enabling avoidance of resonance after routing is exhibited. Further, when applied as vibration absorbing means, the function of enabling vibration absorption after routing is exhibited.

<About the stranded wire conductor 34>
In FIG. 3, the stranded wire conductor 34 is manufactured from copper, a copper alloy, or aluminum or an aluminum alloy. In this embodiment, an aluminum product having the merit of being inexpensive and lightweight is adopted (assumed as an example). The stranded wire conductor 34 is formed in a circular cross section by twisting a plurality of strands 34a. In the stranded wire conductor 34, the diameter and the number of the strands 34 a are set so that the cross-sectional area matches the cross-sectional area of the rod-shaped conductor 29 of the divided conductive path 23. The stranded wire conductor 34 is formed to have lower rigidity and flexibility than the rod-shaped conductor 29.

<Insulator 35>
The insulator 35 is formed as a cover having a circular cross section by extrusion molding on the outer peripheral surface of the stranded wire conductor 34 using a thermoplastic resin material. The insulator 35 is formed with a predetermined thickness. As the thermoplastic resin, various known types can be used. For example, a polymer material such as polyvinyl chloride resin, polyethylene resin, or polypropylene resin is appropriately selected.

<About Relay Crimp Terminal 25 and Crimp Terminal 26>
2, 4, and 5, the relay crimp terminal 25 and the crimp terminal 26 are manufactured by processing a round pipe made of copper or a copper alloy (an example, and may be manufactured by casting, for example) And). The relay crimp terminal 25 and the crimp terminal 26 have a connection portion with the rod-shaped conductor exposed portion 28. Further, the relay crimp terminal 25 further has a connection portion with the stranded conductor exposed portion 33. First, the crimp terminal 26 will be described, and then the relay crimp terminal 25 will be described.

<About crimp terminal 26>
2, 4, and 6, the crimp terminal 26 is used as a part constituting the auxiliary device connecting portion 20 (see FIGS. 1 and 9) in the wire harness 15. Such a crimp terminal 26 is made of a dissimilar metal with respect to the rod-shaped conductor exposed portion 28, but can make a good electrical connection and can stop the electrical connection portion. Formed. The crimp terminal 26 has a closed barrel portion 36 (barrel portion) provided at one end thereof and an electrical contact portion 37, and is formed, for example, in the shape shown in the drawing.

<About the closed barrel portion 36>
The closed barrel portion 36 is an electrical connection portion to the bar-shaped conductor exposed portion 28 of the divided conductive path 23 and is formed in a bottomed cylindrical shape having a circular cross section. Specifically, it has a bottom portion 38, an opening 39 located on the opposite side of the bottom portion 38, a step portion 40, and an intermediate portion 41, and is formed into a tapered bottomed cylindrical shape as shown in the figure. (To put it another way, it is formed into a roughly bullet-shaped external appearance). In the closed barrel portion 36, an internal space (reference numeral omitted) in which the rod-shaped conductor exposed portion 28 of the divided conductive path 23 can be inserted is formed. The inner surfaces of the bottom portion 38, the step portion 40, and the intermediate portion 41 of the closed barrel portion 36 are formed as smooth surfaces. On the other hand, a waterproof serration portion 42 is formed on the inner surface of the opening 39 of the closed barrel portion 36.

  The closed barrel portion 36 has the step portion 40 as described above, and the inner surface and the outer surface (inner peripheral surface and outer peripheral surface) of the opening 39 are larger in diameter than the bottom portion 38 and the intermediate portion 41. It is formed. That is, it is formed in a stepped shape. The closed barrel portion 36 has a small-diameter portion formed as an insertion portion / electrical connection portion for the bar-shaped conductor exposed portion 28, and a large-diameter portion formed as an insertion portion / holding portion / water-stop portion for the insulator 30.

<About the waterproof serration 42>
The waterproof serration portion 42 is formed on the inner surface of the opening 39 of the closed barrel portion 36 as described above. The waterproof serration portion 42 is formed as a portion that improves water stop performance. It should be noted that the formation of the waterproof serration 42 is optional if water can be sufficiently stopped without the waterproof serration 42.

  The waterproof serration portion 42 is formed as a groove in a direction intersecting the direction perpendicular to the center line CL. Specifically, for example, it is formed as a concentric groove (non-spiral groove). The waterproof serration portion 42 is formed as a groove that bites into the insulator 30 of the inserted divided conductive path 23 to prevent moisture from entering.

<About caulking to the closed barrel portion 36>
After the rod-shaped conductor exposed portion 28 of the divided conductive path 23 is inserted into the closed barrel portion 36 as described above, caulking is performed in a range as indicated by an imaginary line in FIG. That is, the crimping range D is crimped. The caulking here refers to pressurizing the closed barrel portion 36 inward so that the closed barrel portion 36 is in electrical contact with the bar-shaped conductor exposed portion 28 of the divided conductive path 23 as shown in FIG. It shall refer to processing that causes such crimping.

  When the caulking is completed, the inner surface of the intermediate portion 41 of the closed barrel portion 36 is electrically connected in a state of biting into the peak portion 31b of the conductor side serration portion 31. In other words, the conductor-side serration portion 31 is electrically connected in a state in which the crest portion 31 b of the conductor-side serration portion 31 bites into the inner surface of the intermediate portion 41. In the above biting process, contact and friction are generated, so that the oxide film on the bar-shaped conductor exposed portion 28 can be destroyed. If the oxide film can be destroyed, as a result, electrical connection can be performed well.

<Relay crimp terminal 25>
2, 5, and 6, the relay crimp terminal 25 is a dissimilar metal with respect to the rod-shaped conductor exposed portion 28 and the stranded wire conductor exposed portion 33, so that electrical connection can be performed satisfactorily. Moreover, it is formed so that the electrical connection portion can be stopped. The relay crimp terminal 25 includes a pair of closed barrel portions 36 (barrel portions) provided at one end and the other end, and a connecting portion 43 that connects the pair of closed barrel portions 36.

<About the pair of closed barrel portions 36>
The pair of closed barrel portions 36 are formed in the same shape as the closed barrel portion 36 of the crimp terminal 26. Moreover, it forms so that the same function can be exhibited. Therefore, the description here is omitted.

  In addition, the electrical connection between the stranded wire conductor exposed portion 33 and the closed barrel portion 36 is subjected to strong pressure by caulking, and contact and friction are generated in the stranded wire conductor exposed portion 33. Therefore, the oxide film is broken, and as a result, it is connected in a good state.

<About the connecting portion 43>
As described above, the connecting portion 43 is formed as a portion that connects the pair of closed barrel portions 36. The connection part 43 is formed so that a round pipe may be crushed and it may become a substantially strip-shaped part. Although not particularly illustrated, a through-hole may be formed in the center of the connecting portion 43 so as to be fixed to a terminal block, for example.

<Insulation of relay crimp terminal 25>
In FIG. 2, regarding the insulation of the relay crimp terminal 25, this portion is covered and insulated by an exterior member 22 (a resin corrugated tube or a resin protector P described later). Therefore, the relay crimp terminal 25 is simply configured. In addition, when the means for insulation is required, using insulation members, such as a tape winding and a heat shrinkable tube, is mentioned as an example.

<About the shape of the routing route>
Next, based on the said structure and structure, the shape of the wiring path | route formed with the electric wire 21 with a crimp terminal is demonstrated. In the description of the shape of the routing route, the illustration of the exterior member 22 is omitted for convenience (the exterior member 22 will be described later).

  In FIG. 8, here, a divided conductive path 23a, a long divided conductive path 23b, a connecting member 24a, a relay crimp terminal 25, and a crimp terminal 26 are illustrated. The middle of the divided conductive path 23a is bent to maintain the shape. The divided conductive path 23a is maintained in a predetermined bent shape by plastic deformation of the rod-shaped conductor 29 constituting the divided conductive path 23a. The long divided conductive path 23b is bent at one end thereof to maintain its shape. As in the above, the bending on the one end side is held in a predetermined bent shape by plastic deformation of the rod-shaped conductor 29. The middle of the long divided conductive path 23 b is routed along the vehicle floor bottom 11. The connecting member 24a is applied as a bending means for facilitating the handling on the terminal side of the electric wire 21 with the crimp terminal, for example, during wiring. In addition, the connecting member 24a is applied as a vibration absorbing unit that absorbs vibration during running after routing, for example.

<About the exterior member 22>
Next, the exterior member 22 will be described with reference to FIG.

  In FIG. 9, the exterior member 22 is a resin molded product for accommodating and protecting the electric wire 21 with a crimp terminal. In the present embodiment, a known corrugated tube is employed as the exterior member 22. The exterior member 22, which is a corrugated tube, has a circular cross-sectional shape in a direction perpendicular to the tube axis (this is an example, and may be a flat shape such as an oval shape or an oval shape). The exterior member 22 is formed so as to have flexibility as a whole. Since the exterior member 22 is a corrugated tube, it is formed in a bellows tube shape. Specifically, the bellows concave portion 44 and the bellows convex portion 45 in the circumferential direction are provided, and the bellows concave portion 44 and the bellows convex portion 45 are formed alternately and continuously in the tube axis direction.

  A clamp C is assembled at a predetermined position of the exterior member 22. The clamp C includes a tube mounting portion 46 formed in accordance with the shape of the exterior member 22 (bellows tube shape), and a cantilever-shaped fixing portion 47 continuous with the tube mounting portion 46. A bolt insertion hole 48 is formed in the fixing portion 47.

  In the present embodiment, a corrugated tube is employed as the exterior member 22, but is not limited thereto. For example, a combination of the corrugated tube and the resin protector P (see FIG. 2) may be employed, or the protector P may be employed alone. What is necessary is just to respond | correspond by the assembly | attachment of the protector P to the part which wants to carry out path | route control conversely, ensuring the part which wants to give flexibility with a corrugated tube. Further, for example, after the bending or the like, the protector P may be assembled to support this bent shape. As an example of the assembly position of the protector P, a position that covers the connecting member 24 and the vicinity thereof is given as an example (it may be assembled toward the divided conductive path 23). The protector P is effective not only as a route restriction but also as a reinforcing part for climbing on a stepping stone or a curbstone. Other than the corrugated tube and the protector P, a sheet member or the like that covers and covers a desired range is also effective.

<About manufacture, transportation, and route routing of the wire harness 15>
Next, manufacturing, transportation, and route routing of the wire harness 15 will be described.

  In FIG. 9, the wire harness 15 is manufactured by first inserting the wire 21 with the crimp terminal into the exterior member 22 that is entirely resin-molded to form the harness body 19, and then, at a predetermined position of the exterior member 22. The assembly is completed when the clamp C and other retrofitting parts are assembled to.

  After the wire harness 15 is manufactured, if the wire harness 15 is bent at a predetermined position (for example, at a position corresponding to the connecting members 24a and 24c), the wire harness 15 is in a state where the terminal side portion and the intermediate portion are substantially parallel to each other. They are arranged opposite to each other (see FIG. 9A). With this arrangement, the overall length of the wire harness 15 is shortened, and the wire harness 15 is packed with a minimum width. That is, the entire wire harness 15 is packed in a compact state. And the wire harness 15 is transported in this compact state.

  When the packaging state is released after transportation, the wire harness 15 is in the same state as after manufacture. Thereafter, the wire harness 15 is attached and fixed to the fixed object 50 such as the vehicle floor bottom 11 or the like via the bolt 49 inserted into the bolt insertion hole 48 (the shape of the fixed object 50 is an example). When the wire harness 15 is attached and fixed to the fixed object 50, the predetermined route routing is completed as shown in the figure. In routing the route, the structure and structure of the crimp-attached electric wire 21 effectively function.

<About the effect of the present invention>
As described above with reference to FIGS. 1 to 9, the wire harness 15 includes a plurality of electric wires 21 with crimp terminals. Regarding the electric wire 21 with a crimp terminal, the divided conductive path 23 in which this one is divided into a plurality of parts, the connecting member 24 that connects the adjacent divided conductive paths 23, and the divided conductive path 23 and the connecting member 24 are electrically connected. Relay crimping terminal 25 to be connected, and crimping terminal 26 provided at the terminal position of electric wire 21 with the crimping terminal.

  According to the present invention, when dissimilar metals are connected between the rod-shaped conductor exposed portion 28 and the crimp terminal 26 and between the rod-shaped conductor exposed portion 28 and the relay crimp terminal 25, the conductor side serration in the rod-shaped conductor exposed portion 28 is obtained. Since the edge of the portion 31 is connected to the crimping terminal 26 and the relay crimping terminal 25 in a state of biting, and contact and friction occur during the biting process, the oxide film of the bar-shaped conductor exposed portion 28 is formed. Can be destroyed. If the oxide film can be destroyed, as a result, electrical connection can be performed well. Therefore, according to this invention, even if there exists an electrical connection part of dissimilar metals, there exists an effect that this connection can be performed favorably.

<Regarding the first modification of the bar-shaped conductor exposed portion 28 and the closed barrel portion 36>
A first modification of the rod-shaped conductor exposed portion 28 and the closed barrel portion 36 will be described with reference to FIG. 10A and 10B are diagrams showing a first modification, in which FIG. 10A is a cross-sectional view before pressure bonding, and FIG. 10B is a cross-sectional view after pressure bonding.

  In FIG. 10A, the bar-shaped conductor exposed portion 28 here is the same as in FIG. That is, the conductor-side serration portion 31 is formed on the outer peripheral surface, and the conductor-side serration portion 31 is formed such that the valley portion 31a and the peak portion 31b are located on a plane orthogonal to the central axis CL.

  On the other hand, the closed barrel portion 36 is formed in a shape different from that shown in FIGS. That is, a terminal-side serration portion 51 that is a groove-shaped portion with an edge is formed on the inner surface of the closed barrel portion 36. The terminal-side serration portion 51 has a valley portion 51a and a mountain portion 51b, and is formed so as to be located on a plane orthogonal to the central axis CL. Further, the terminal-side serration portion 51 is formed such that the pitch P2 of the crest portion 51b is larger than the pitch P1 of the crest portion 31b of the conductor-side serration portion 31 (P1 <P2). The terminal-side serration portion 51 is formed in a shape different from the conductor-side serration portion 31, that is, an irregular shape.

  In FIG. 10B, when the rod-shaped conductor exposed portion 28 is inserted into the closed barrel portion 36 and then the closed barrel portion 36 is crimped, the crest portion 31b of the conductor side serration portion 31 becomes the terminal side serration. In the state where it bites into the slope of the portion 51, and in the state where the peak portion 51b of the terminal-side serration portion 51 bites into the slope of the conductor-side serration portion 31 (such bite is P1 < Due to the relationship of P2). When the bite occurs, contact and friction occur, and the oxide film on the bar-shaped conductor exposed portion 28 is destroyed. Therefore, the electrical connection is satisfactorily performed.

<Regarding the second modification of the bar-shaped conductor exposed portion 28 and the closed barrel portion 36>
A second modification of the bar-shaped conductor exposed portion 28 and the closed barrel portion 36 will be described with reference to FIG. 11A and 11B are diagrams showing a second modification, in which FIG. 11A is a cross-sectional view before pressure bonding, and FIG. 11B is a cross-sectional view after pressure bonding.

  In FIG. 11A, the bar-shaped conductor exposed portion 28 is formed in a shape different from that in FIG. That is, two conductor side serration portions 52 and two smooth surface portions 53 are formed on the outer peripheral surface of the bar-shaped conductor exposed portion 28. In the case of FIG. 11, the conductor-side serrations 52 are arranged on the upper and lower sides of the paper, and the smooth surface 53 is arranged on the front and rear sides of the paper. The conductor-side serration portion 52 has a trough portion 52a and a crest portion 52b, and is formed so as to be positioned on a plane orthogonal to the central axis CL. The smooth surface portion 53 is formed on a smooth surface portion.

  On the other hand, the closed barrel portion 36 is also formed in a shape different from that shown in FIGS. That is, three terminal-side serration portions 54 and three smooth surface portions 55 are formed on the inner surface of the closed barrel portion 36. The terminal-side serration portion 54 has a valley portion 54a and a mountain portion 54b, and is formed so as to be positioned on a plane orthogonal to the central axis CL. The smooth surface portion 55 is formed on a smooth surface portion. The three terminal side serration portions 54 and the three smooth surface portions 55 are alternately arranged around the central axis CL. The terminal-side serration portion 54 and the smooth surface portion 55 are disposed and formed so that their positions are slightly shifted around the central axis CL with respect to the conductor-side serration portion 52 and the smooth surface portion 53. Here, it is formed in a shape different in arrangement and number (formed in an irregular shape).

  In FIG. 11B, when the rod-shaped conductor exposed portion 28 is inserted into the closed barrel portion 36 and then the closed barrel portion 36 is crimped, the peak portion 52b of the conductor-side serration portion 52 becomes the closed barrel portion. In the state where it bites into the 36 smooth surface portion 55 and in the state where the crest portion 54b of the terminal side serration portion 54 bites into the smooth surface portion 53 of the rod-shaped conductor exposed portion 28, it is electrically connected. When the bite occurs, contact and friction occur, and the oxide film on the bar-shaped conductor exposed portion 28 is destroyed. Therefore, the electrical connection is satisfactorily performed.

<Regarding the third modification of the bar-shaped conductor exposed portion 28 and the closed barrel portion 36>
A third modification of the bar-shaped conductor exposed portion 28 and the closed barrel portion 36 will be described with reference to FIG. 12A and 12B are diagrams showing a third modification, in which FIG. 12A is a cross-sectional view before pressure bonding, and FIG. 12B is a cross-sectional view after pressure bonding.

  In FIG. 12A, the bar-shaped conductor exposed portion 28 here is the same as in FIG. That is, the conductor-side serration portion 31 is formed on the outer peripheral surface, and the conductor-side serration portion 31 is formed such that the valley portion 31a and the peak portion 31b are located on a plane orthogonal to the central axis CL.

  On the other hand, the closed barrel portion 36 is formed in a shape different from that shown in FIGS. That is, a terminal-side serration portion 56 that is a groove-shaped portion with an edge is formed on the inner surface of the closed barrel portion 36. The terminal-side serration portion 56 has a valley portion 56a and a mountain portion 56b, and is formed so that a cross-sectional view of this portion has a wedge shape. The terminal-side serration portion 56 is formed in a shape different from the conductor-side serration portion 31, that is, an irregular shape.

  In FIG. 12B, when the rod-shaped conductor exposed portion 28 is inserted into the closed barrel portion 36 and then the closed barrel portion 36 is crimped, the peak portion 31 b of the conductor-side serration portion 31 becomes the terminal-side serration. Electrical connection is made in a state of biting into the slope of the portion 56 and in a state of biting of the crest portion 56b of the terminal-side serration portion 56 into the slope of the conductor-side serration portion 31. When the bite occurs, contact and friction occur, and the oxide film on the bar-shaped conductor exposed portion 28 is destroyed. Therefore, the electrical connection is satisfactorily performed.

<Regarding the Fourth Modified Example of Bar-shaped Conductor Exposed Portion 28 and Closed Barrel Portion 36>
A fourth modification of the rod-shaped conductor exposed portion 28 and the closed barrel portion 36 will be described with reference to FIG. FIGS. 13A and 13B are diagrams showing a fourth modification, in which FIG. 13A is a cross-sectional view before pressure bonding, and FIG. 13B is a cross-sectional view after pressure bonding.

  In FIG. 13A, the bar-shaped conductor exposed portion 28 here is the same as in FIG. That is, the conductor-side serration portion 31 is formed on the outer peripheral surface, and the conductor-side serration portion 31 is formed such that the valley portion 31a and the peak portion 31b are located on a plane orthogonal to the central axis CL.

  On the other hand, the closed barrel portion 36 is formed in a shape different from that shown in FIGS. That is, on the inner surface of the closed barrel portion 36, a terminal-side serration portion 57 that becomes a groove-shaped portion with an edge is formed. The terminal-side serration portion 57 has a trough portion 57a and a crest portion 57b, and is formed in a left-hand screw shape. Since the terminal-side serration portion 57 has a left-hand screw-like shape, the terminal-side serration portion 57 is formed in a shape different from the conductor-side serration portion 31, that is, an irregular shape.

  In FIG. 13B, when the rod-shaped conductor exposed portion 28 is inserted into the closed barrel portion 36 and then the closed barrel portion 36 is caulked, the peak portion 31b of the conductor side serration portion 31 becomes the terminal side serration. It is electrically connected in such a state that it bites into the slopes and peak portions 57b of the part 57, and also in such a state that the peak portions 57b of the terminal side serration portion 57 bite into the slopes and peak portions 31b of the conductor side serration portion 31. . When the bite occurs, contact and friction occur, and the oxide film on the bar-shaped conductor exposed portion 28 is destroyed. Therefore, the electrical connection is satisfactorily performed.

<Regarding the Fifth Modification of Bar-Shaped Conductor Exposed Part 28 and Closed Barrel Part 36>
A fifth modification of the rod-shaped conductor exposed portion 28 and the closed barrel portion 36 will be described with reference to FIG. 14A and 14B are diagrams showing a fifth modification, in which FIG. 14A is a cross-sectional view before pressure bonding, and FIG. 14B is a cross-sectional view after pressure bonding.

  In FIG. 14A, the bar-shaped conductor exposed portion 28 is formed in a shape different from that in FIG. That is, on the outer peripheral surface of the rod-shaped conductor exposed portion 28, a conductor-side serration portion 58 that is a groove-shaped portion with an edge is formed. The conductor side serration portion 58 has a valley portion 58a and a mountain portion 58b, and is formed in a right-hand screw shape.

  On the other hand, the closed barrel portion 36 is also formed in a shape different from that shown in FIGS. That is, a terminal-side serration portion 57 that is a groove-shaped portion with an edge is formed on the inner surface of the closed barrel portion 36 (the same as FIG. 13). The terminal-side serration portion 57 has a trough portion 57a and a crest portion 57b, and is formed in a left-hand screw shape. Since the terminal-side serration portion 57 has a left-hand screw-screw shape, and the conductor-side serration portion 58 has a right-31 screw screw-shape, these are formed in different shapes (an irregular shape). It is formed).

  In FIG. 14B, when the rod-shaped conductor exposed portion 28 is inserted into the closed barrel portion 36 and then the closed barrel portion 36 is crimped, the crest portion 58b of the conductor side serration portion 58 becomes the terminal side serration. It is electrically connected in a state where it bites into the slope and peak portion 57b of the portion 57, and in a state where the peak portion 57b of the terminal side serration portion 57 bites into the slope and peak portion 58b of the conductor side serration portion 58. . When the bite occurs, contact and friction occur, and the oxide film on the bar-shaped conductor exposed portion 28 is destroyed. Therefore, the electrical connection is satisfactorily performed.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Hybrid vehicle (automobile), 2 ... Engine, 3 ... Motor unit, 4 ... Inverter unit, 5 ... Battery, 6 ... Engine room, 7 ... Car rear part, 8, 9 ... Wire harness, 10 ... Middle part, 11 ... Under the vehicle floor (vehicle body), 12 ... Junction block, 13 ... Harness terminal, 14 ... Shield connector, 15 ... Wire harness, 16 ... Low voltage battery, 17 ... Front of car, 18 ... Auxiliary device, 19 ... Harness body, 20 ... Supplementary 21: Electric wire with crimp terminal, 22: Exterior member, 23 (23a to 23d) ... Split conductive path (electric wire, aluminum electric wire), 24 (24a to 24c) ... Connecting member (aluminum electric wire), 25 ... Relay Crimp terminal (crimp terminal), 26 ... Crimp terminal, 28 ... Bar-shaped conductor exposed part, 29 ... Bar-shaped conductor, 30 ... Absolute 31 ... conductor side serration part, 31a ... valley part, 31b ... mountain part, 32 ... main body part, 33 ... stranded conductor exposed part, 34 ... stranded conductor, 34a ... strand, 35 ... insulator, 36 ... Closed barrel part (barrel part), 37 ... Electric contact part, 38 ... Bottom part, 39 ... Opening part, 40 ... Step part, 41 ... Intermediate part, 42 ... Waterproof serration part, 43 ... Connection part, 44 ... Bellows concave part, 45 ... Bellows convex part, 46 ... Tube attachment part, 47 ... Fixing part, 48 ... Bolt insertion hole, 49 ... Bolt, 50 ... Fixing object, 51, 54, 56, 57 ... Terminal side serration part, 52, 58 ... Conductor side serration part, 53, 55 ... smooth surface part (part of smooth surface), C ... clamp, CL ... center line, D ... crimping range, P ... protector (exterior member)

Claims (7)

An electric wire with a crimp terminal formed by connecting a crimp terminal to an exposed portion of a rod-shaped conductor formed by removing the insulator of a wire having a rod-shaped conductor formed as a single core and an insulator covering the rod-shaped conductor. In
A conductor-side serration portion that becomes a groove-shaped portion with an edge is formed on the outer peripheral surface of the bar-shaped conductor exposed portion. In the electric wire with a crimp terminal according to claim 1,
An electric wire with a crimp terminal, wherein a portion of a smooth surface is formed on the outer peripheral surface of the bar-shaped conductor exposed portion separately from the conductor-side serration portion. In the electric wire with a crimp terminal according to claim 1 or 2,
A terminal-side serration portion that becomes a groove-shaped portion with an edge is also formed on the inner surface of the barrel portion of the crimp terminal as a portion to crimp the bar-shaped conductor exposed portion. In the electric wire with a crimp terminal according to claim 3,
The terminal-side serration portion is formed in an irregular shape with respect to the conductor-side serration portion. In the electric wire with a crimp terminal according to claim 3 or 4,
An electric wire with a crimp terminal, wherein a smooth surface portion is formed on the inner surface of the barrel portion separately from the terminal-side serration portion. In the electric wire with a crimp terminal according to claim 1, 2, 3, 4 or 5,
The rod-shaped conductor is made of aluminum or an aluminum alloy, and the crimp terminal is made of a dissimilar metal having a material different from that of the rod-shaped conductor. In wire harnesses that are routed to cars and make electrical connections,
A wire harness comprising one or a plurality of electric wires with crimp terminals according to claim 1, as a configuration of the wire harness.

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