Abstract:
High-voltage wires ( 21, 21 ′) are formed by bundling a plurality of aligned conductors ( 22 ) and covering same with an insulating body ( 23 ), wherein the thickness (A) of the insulating body at a neighboring section ( 24 ) between the conductors ( 22 ) is equal to or less than the thickness (B) of the insulating body at a section ( 25 ) which is not between the conductors.

Description:
TECHNICAL FIELD  
       [0001]    The present invention relates to a high-voltage wire which includes a plurality of conductors and an insulator that collectively coats the conductors, and a method for producing the high-voltage wire. 
       BACKGROUND ART 
       [0002]    In recent years, eco-cars such as hybrid vehicles or electric vehicles attract attentions. The penetration rate of hybrid vehicles or electric vehicles has been increasing. The hybrid vehicle or the electric vehicle carries a motor as a power source. To drive the motor, it is necessary to connect wire harnesses which can endure high voltage between a battery and an inverter and between the inverter and the motor. The wire harness which can endure high voltage includes a plurality of high-voltage wires which are electrical pathways. In the following, the electric wire, which the wire harness which can endure high voltage includes, is called a high-voltage wire. 
         [0003]    A number of wire harnesses which can endure high voltage are proposed. One example of these wire harnesses is disclosed in the following patent document 1. 
         [0004]    In the wire harness disclosed in the following patent document 1, a structure in which a plurality of high-voltage wires are wired to be horizontally aligned in a row is adopted. According to the structure, the height of the wire harness is small, and even if the wire harness is assembled below the vehicle floor, the wire harness is positioned in a place apart from the ground. Therefore, an effect is achieved which is that the wire harness can be prevented from being damaged. 
       RELATED ART DOCUMENTS 
     Patent Documents 
       [0005]    Patent document 1: Japan Patent Publication No. 2010-12868 
       SUMMARY OF INVENTION  
     Technical Problem 
       [0006]    Because the wire harness disclosed in the patent document 1 includes a plurality of high-voltage wires which are horizontally aligned in a row, when the wire harness is wired in a vehicle, although the length of the wire harness in the vehicle height direction can be minimized, the length of the wire harness in the vehicle widthwise direction is increased. Thus, the inventor of the present invention assumes that space-saving is demanded in the future, and considers that it is necessary to study the structure to meet such demand. 
         [0007]    Moreover, besides the limitation to the wire harness, for example, to increase the traveling distance of the vehicle, it is required to reduce the weight of vehicle components carried in the vehicle. 
         [0008]    The present invention is made in view of the above situations, and the object of the present invention is to provide a high-voltage wire and a method for producing the high-voltage wire for which the space can be saved and the weight can be reduced. 
       Solution to Problem 
       [0009]    In order to solve the above problems, a high-voltage wire according to this invention comprises, a plurality of conductors, and an insulator which aligns and collectively coats the plurality of conductors, wherein the thickness of the insulator at a point, where the interval between adjacent conductors is the smallest, of an adjacent part sandwiched by the adjacent conductors is smaller than the thickness of the insulator at a nonadjacent part. 
         [0010]    In the high-voltage wire of this invention the thickness of the insulator at the thinnest point of the adjacent part may be equal to or thicker than 0.25 mm. 
         [0011]    In order to solve the above problems, a method for producing a high-voltage wire which has a plurality of aligned conductors and an insulator, wherein the insulator is extruded to coat the plurality of aligned conductors collectively so that the thickness of the insulator at a point, where the interval between adjacent conductors is the smallest, of an adjacent part sandwiched by the adjacent conductors is smaller than the thickness of the insulator at a nonadjacent part. 
         [0012]    In the method for producing the high-voltage wire, the conductors are preheated before the insulator is extruded to coat the conductors. 
       Advantageous Effects of Invention 
       [0013]    According to the high-voltage wire of the present invention, compared to traditional ones, effects can be achieved which are that the space can be saved and the weight can be reduced. In particular, when the traditional high-voltage wires which are provided with insulators and conductors are aligned one by one, compared to the high-voltage wire of the present invention, the insulators of the high-voltage wires are interposed between the conductors of the high-voltage wires, respectively. Therefore, the insulators between the conductors are divided into two parts. In contrast, the high-voltage wire of the present invention includes a plurality of aligned conductors and an insulator which collectively coats the plurality of conductors, and the thickness of the insulator at a point, where the interval between adjacent conductors is the smallest, of an adjacent part sandwiched by the adjacent conductors is smaller than the thickness of the insulator at a nonadjacent part. Thus, the interval between the conductors surely becomes narrower than before. Therefore, the high-voltage wire of the present invention achieves effects which are that the width can be reduced compared to the width of a plurality of aligned traditional high-voltage wires, and therefore the space can be saved. For the high-voltage wire of the present invention, since the thickness of the insulator between the conductors is smaller than before, an effect is achieved which is that the weight can be reduced at least due to the thinner insulator. 
         [0014]    When the high-voltage wire of the present invention is used in a high voltage circuit, an effect is achieved that a withstanding voltage 5 kV of the electric wire can be ensured. 
         [0015]    According to the method for producing the high-voltage wire of the present invention, compared to the traditional ones, an effect is achieved which is that the method for producing the high-voltage wire for which the space can be saved and the weight can be reduced can be provided. 
         [0016]    According to the method for producing the high-voltage wire of the present invention, effects are achieved which are that by preheating the conductors, the fluidity of the insulator which is extruded on the conductor is improved, and the thickness of the insulator between the adjacent conductors can be easy to be reduced. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0017]      FIGS. 1A to 1C  are figures according to high-voltage wires of the present invention, in which  FIG. 1A  is a schematic block diagram of a vehicle, and  FIGS. 1B and 1C  are sectional views of the high-voltage wires. 
           [0018]      FIGS. 2A to 2C  are figures to compare the widths of high-voltage wires, in which  FIG. 2A  is a sectional view of the high-voltage wire in  FIG. 1B ,  FIG. 2B  is a sectional views of the high-voltage wire in  FIG. 1C , and  FIG. 2C  is a sectional view of the high-voltage wire of a traditional example. 
           [0019]      FIGS. 3A to 3C  are figures according to a method for producing the high-voltage wire, in which  FIG. 3A  is a schematic block diagram of the whole manufacturing method,  FIG. 3B  is a sectional view which shows that conductors are supplied, and  FIG. 3C  is a sectional view which shows that an insulator is extruded to coat the conductors. 
           [0020]      FIGS. 4A and 4B  are figures of wire harnesses which include the high-voltage wire, in which  FIG. 4A  is a sectional view of a wire harness in which a shielding member and a sheath are integrally formed with the high-voltage wire, and  FIG. 4B  is a sectional view of a wire harness in which a shielding member and a sheath are formed separately from the high-voltage wire. 
           [0021]      FIGS. 5A to 5C  are figures according to the high-voltage wires of other examples, in which  FIG. 5A  is a sectional view of a high-voltage wire which has two conductors, and  FIGS. 5B and 5C  are sectional views of high-voltage wires which have three conductors. 
           [0022]      FIGS. 6A to 6C  are figures according to the high-voltage wires of other examples, in which  FIG. 6A  is a sectional view of a high-voltage wire whose conductors are rod-like rectangular conductors,  FIG. 6B  is a sectional view of a high-voltage wire whose conductors are rectangular conductors, and  FIG. 6C  is a sectional view of a high-voltage wire whose insulator is divided into a first insulator and a second insulator. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0023]    A high-voltage wire includes a plurality of aligned conductors and an insulator which collectively coats the plurality of conductors, in which the thickness of the insulator at a point, where the interval between adjacent conductors is the smallest, of an adjacent part sandwiched by the adjacent conductors is smaller than the thickness of the insulator at a nonadjacent part. 
         [0024]    A method for producing a high-voltage wire which has a plurality of aligned conductors and an insulator, includes a step of extruding the insulator to coat the plurality of aligned conductors collectively so that the thickness of the insulator at a point, where the interval between adjacent conductors is the smallest, of an adjacent part sandwiched by the adjacent conductors is smaller than the thickness of the insulator at a nonadjacent part. 
       Embodiments 
       [0025]    Below, the embodiments will be described with reference to the figures.  FIGS. 1A to 1C  are figures according to high-voltage wires of the present invention, in which  1 A is a schematic block diagram of a vehicle, and  FIGS. 1B and 1C  are sectional views of the high-voltage wires.  FIGS. 2A to 2C  are figures to compare the widths of high-voltage wires.  FIGS. 3A to 3C  are figures according to a method for producing the high-voltage wire.  FIGS. 4A and 4C  are figures of wire harnesses which includes the high-voltage wire.  FIGS. 5A to 5C  and  FIGS. 6A to 6C  are the high-voltage wires of other examples. 
         [0026]    In the present embodiment, an example in which the high-voltage wire of the present invention is adopted in the wire harness which is wired in a hybrid vehicle (or an electric vehicle) is described. 
         [0027]    In  FIG. 1A , a reference number  1  indicates a hybrid vehicle. The hybrid vehicle  1  is a vehicle which is driven by mixing two powers of an engine  2  and a motor unit  3 , and the electric power from a battery  5  (battery pack) will be supplied to the motor unit  3  via an inverter unit  4 . The engine  2 , the motor unit  3  and the inverter unit  4  are carried in an engine room  6  at the position of the front wheels and the like in the embodiment. The battery  5  is carried in a vehicle rear part  7  of rear wheels and the like. The battery  5  may be carried in a vehicle indoor space behind the engine room  6 . 
         [0028]    The motor unit  3  and the inverter unit  4  are connected by a wire harness  8 . The battery  5  and the inverter unit  4  are connected by a wire harness  9 . The wire harnesses  8  and  9  are constructed as high voltage ones. The wire harness  8  may be called a motor cable. The wire harness  8  is shorter than the wire harness  9 . 
         [0029]    A middle part  10  of the wire harness  9  is wired below a vehicle body floor  11 . The wire harness  9  may be wired inside the vehicle. The vehicle body floor  11  is the ground side of the vehicle body, and through holes (not shown in the figure) are formed to penetrate the vehicle body  11  at predetermined positions which are parts of a so-called panel member. The parts of the through holes are provided with a waterproof structure (not shown in the figure) to waterproof the wire harness  9 . 
         [0030]    The wire harness  9  and the battery  5  are connected through a junction block  12  which the battery  5  is provided with. A back end  13  of the wire harness  9  is electrically connected to the junction block  12 . The side of the wire harness  9  at the back end  13  is wired above the floor at the indoor side of the vehicle. The side of the wire harness  9  at a front end  14  is also wired above the floor. The front end  14  of the wire harness  9  is electrically connected to the inverter unit  4   
         [0031]    The present embodiment is further described as follows. The motor unit  3  includes a motor and a generator in construction. The inverter unit  4  includes an inverter and a converter in construction. The motor unit  3  is formed as a motor assembly which includes a shielding case. The inverter unit  4  is also formed as an inverter assembly including a shielding case. The battery  5  is a Ni-MH battery or Li-ion battery, and is modulated. Further, for example, an electric power storage device such as a capacitor may be used. The battery  5  shall not be particularly limited as long as the battery  5  may be used for the hybrid vehicle  1  or an electric vehicle. 
         [0032]    In  FIGS. 1A to 1C , the wire harness  9  which connects the inverter unit  4  and the battery  5  includes a high-voltage wire  21  according to the present invention or a high-voltage wire  21 ′ according to the present invention. For either the high-voltage wire  21  or the high-voltage wire  21 , the space can be saved and the weight can be reduced. 
         [0033]    As shown in  FIGS. 1B to 2B , the high-voltage wire  21  or the high-voltage wire  21 ′ includes two conductors  22  and an insulator  23  which coats the two conductors  22  collectively. The two conductors  22  have circular cross sections, and are aligned in the longitudinal direction. 
         [0034]    For the wire harness  9 , the number of the conductors  22  is two, but the number is not limited to  2 . For example, for the wire harness  8  which connects the motor unit  3  and the inverter unit  4 , the number of the conductors  22  is three as described below. When three or more conductors  22  are aligned, these conductors  22  are parallel to each other in the longitudinal direction, and are so aligned that the axes are in the same plane. 
         [0035]    The electric wire size (cross-sectional area) of the high-voltage wire  21  or the high-voltage wire  21 ′ is changed in response to the number of the conductors  22 , but it is preferred that the electric wire is manufactured to have an electric wire size of 3 mm 2  to 30 mm 2 . The high-voltage wire  21  or the high-voltage wire  21 ′ is manufactured to be a so-called thick electric wire. 
         [0036]    The high-voltage wire  21  or the high-voltage wire  21 ′ is formed to have the same flexibility as before, or have such a stiffness that the shape along the wiring path of the wire harness  9  is maintained by itself, that is, when bended from a straight state, the high-voltage wire is maintained in the bended shape without returning to the original state. 
         [0037]    A twisted strand conductor which has a cross section of a circular shape formed by twisting copper, copper alloy, aluminum or aluminum alloy strands is used as the conductor  22 . The material of the conductor  22  is not limited to the above, but what is used for the conductor of an electric wire can be adopted. Other examples are described below. It is effective to use aluminum or aluminum alloy among the above-described materials to make the conductor  22  cheap and lightweight. 
         [0038]    The insulator  23  covers to insulate and protect the conductor  22 , and is formed to collectively coat the two conductors  22  aligned as described above. The insulator  23  is formed to have a section of a generally glasses shape in the present embodiment. Preferred materials for the insulator  23  include thermoplastic resin materials such as polyethylene, polypropylene, polyvinyl chloride, and fluorocarbon polymers. The material of the insulator  23  is not limited to the above, but what is used for the insulator of an electric wire can be adopted. In the present embodiment, cross-linked polyethylene is used. 
         [0039]    The insulator  23  has an “adjacent part  24 ” which is a part sandwiched by the conductors  22  adjacent to each other, in other words, a part which the conductors  22  are adjacent to, and, a “nonadjacent part  25 ” which is a part except the adjacent part  24 . The lower limit of a thickness A at the thinnest point of the adjacent part  24  is set to be 0.25 mm. The “thinnest point” “is “the point where the interval between the conductors  22  becomes the smallest”. 
         [0040]    The insulator  23  of the high-voltage wire  21  in  FIG. 1B  is so formed that the thickness A of the adjacent part  24  is set to be the lower limit, which is 0.25 mm. The lower limit, which is 0.25 mm, is set to ensure the withstanding voltage of the electric wire is 5 kV when the high-voltage wire  21  is used in a high voltage circuit. 
         [0041]    The adjacent part  24  is a part for which the abrasion resistance of the electric wire is not considered. 
         [0042]    If the upper limit of the thickness A of the thinnest point of the adjacent part  24  is smaller than a thickness G of the traditional example (to be described with reference to  FIG. 2C .) (A&lt;G), the space can be saved, and it is also possible to set G as the upper limit. However, in the present embodiment, more preferably, the upper limit of the thickness A of the thinnest point of the adjacent part  24  is set to be the same as a thickness B of the nonadjacent part  25 . The thickness B of the nonadjacent part  25  is set to be the same as a thickness H of an insulator  103  of the traditional example (to be described with reference to  FIG. 2C ). 
         [0043]    The insulator  23  of the high-voltage wire  21 ′ in  FIG. 1C  is so formed that the thickness A of the thinnest point of the adjacent part  24  is set to be the above-described upper limit. 
         [0044]    Since the insulator  23  of the high-voltage wire  21  is so formed that the thickness A of the thinnest point of the adjacent part  24  is set to be the lower limit, which is 0.25 mm, a width C of the high-voltage wire  21  becomes smaller. The direction of the width C corresponds to the vehicle widthwise direction. Since the insulator  23  of the high-voltage wire  21 ′ is so formed that the thickness A of the thinnest point of the adjacent part  24  is set to be the above-described upper limit, a width D of the high-voltage wire  21 ′ becomes slightly larger than that of the high-voltage wire  21 , but is substantially reduced. A dimension E in the vehicle height direction of the high-voltage wire  21  or the high-voltage wire  21 ′ is the same as that of the traditional example. Therefore, the dimension E is such a dimension that even if the middle part  10  of the wire harness  9  is wired below the vehicle body floor  11 , the distance from the ground can be ensured. 
         [0045]    In  FIG. 2 , when the high-voltage wire  21  and the high-voltage wire  21 ′ are compared with the two high-voltage wires  101  of the traditional example, the width C of the high-voltage wire  21  &lt;the width D of the high-voltage wire  21 ′&lt;a width F of the two high-voltage wires  101 . It can be seen from the figure that the high-voltage wire  21  or the high-voltage wire  21 ′ according to the present invention is narrower than the two high-voltage wires  101  of the traditional example. The high-voltage wire  101  of the traditional example shown in  FIG. 2C  includes a conductor  102  and the insulator  103 . The insulator  103  is formed to coat the whole peripheral surface of the conductor  102  at a uniform thickness H. The insulator  103  is made to have the uniform thickness H because it is important to secure the abrasion resistance of the electric wire. When the two high-voltage wires  101  are aligned to contact each other, the part adjacent to the conductors  102  will have a thickness G (G is the double of H). 
         [0046]    If the high-voltage wire  101  of the traditional example is a copper twisted strand electric wire for which the electric wire size (the cross-sectional area) is 15 mm 2  and the final outer diameter is 7.5 mm, when two high-voltage wires  101  of the traditional example are aligned, the width F (the final outer diameter in the major axis direction)=15.0 mm. In contrast, when the high-voltage wire  21 ′ is adopted, the width D=13.9 mm. Therefore, compared to the traditional example, a 7% reduction in width (−7%) can be achieved. Furthermore, when the high-voltage wire  21  is adopted, the width C=13.1 mm. Therefore, compared to the traditional example, a 13% reduction in width (−13%) can be achieved. 
         [0047]    The high-voltage wire  21  and the high-voltage wire  21 ′, for example, are manufactured as follows. That is, as shown in  FIG. 3A , the high-voltage wire  21  or the high-voltage wire  21 ′ is so manufactured that the conductors  22  are individually unwound from two drums  26 , and the insulator  23  is extruded to coat the conductors  22  by an insulator molding body  27 . In the insulator molding body  27 , an interval J between the conductors  22  is maintained as shown in  FIG. 3B . The interval J is the same as the thickness A of the thinnest point of the adjacent part  24 . The insulator  23  is extruded to coat the conductors  22  as shown in  FIG. 3C . In the present embodiment, before the insulator  23  is extruded to coat the conductors  22 , the conductors  22  are preheated. This preheating help to improve the fluidity of the insulator  23 . 
         [0048]    In  FIGS. 4A and 4B , the wire harness  9  is formed, for example, as follows. That is, as shown in  FIG. 4A , the wire harness  9  includes the high-voltage wire  21  formed as described above, a conductive shielding member  28  made of a web or a metal foil, and an insulative sheath  29  which is extruded to coat the outer side of the shielding member  28 . In  FIG. 4A , the wire harness  9  is manufactured into a cable shape for which the shielding member  28  and the sheath  29  are integrally formed with the high-voltage wire  21 . 
         [0049]    Resin material which has various good properties such as abrasion resistance, heat resistance, weather resistance, impact resistance, extrusion molding property and the like is suitably used as the material of the sheath  29 . In this case, the wire harness  9  can be made without an exterior member. The resin material which makes it possible for the wire harness  9  to be made without an exterior member is suitable for the insulator  23 . 
         [0050]    On the other hand, the wire harness  9  as shown in  FIG. 4B  includes the high-voltage wire  21 , a shielding member  30  which accommodates the overall length of the high-voltage wire  21 , and a pipe-like exterior member  31  which accommodates the high-voltage wire  21  and the shielding member  30 . The shielding member  30  is made of a web or a metal foil and is formed into a pipe-like shape. The exterior member  31  is a flat corrugated tube or a protector. 
         [0051]    Although not shown in the figure, the wire harness  9  may include a metal protecting pipe which has a shielding function to accommodate the high-voltage wire  21 . 
         [0052]    Of course, the above high-voltage wire  21  may be replaced by the high-voltage wire  21 ′, and also may be replaced by the high-voltage wires of variations as shown in  FIGS. 5A to 6C . The variations are described as follows. 
         [0053]    In  FIGS. 5A to 5C , a high-voltage wire  41  includes two conductors  42 , and an insulator  43  which coats the two conductors  42  collectively. The conductor  42  is formed to be the same as the conductor  22  (refer to  FIG. 1  B) or a conductor structure of a circular single core. The insulator  43  is formed not to have a section of a generally glasses shape (a section shape in which two circles are arranged to be partly overlapped) but to have a section of an ellipse shape. The insulator  43  is so formed that the thickness A of the thinnest point of an adjacent part  44  is set to be the lower limit, which is 0.25 mm. The insulator  43  is so formed that the thickness B of a nonadjacent part  45  is the same as the above-described nonadjacent part  25  which is described with reference to  FIG. 1B . 
         [0054]    In  FIG. 5B , a high-voltage wire  51  includes three conductors  52 , and an insulator  53  which coats the three conductors  52  collectively. The conductor  52  is formed to be the same conductor structure of a circular single core as the above-described conductor  22  which is described with reference to  FIG. 1B . The insulator  53  is formed to have a section of a generally glasses shape. The insulator  53  is so formed that the thickness A of the thinnest point of the adjacent part  54  is set to be the lower limit, which is 0.25 mm. The insulator  53  is so formed that the thickness B of a nonadjacent part  55  is the same as the above-described nonadjacent part  25  which is described with reference to  FIG. 1B . The high-voltage wire  51  is suitably used in the wire harness  8  (refer to  FIG. 1A ) which connects the motor unit  3  and the inverter unit  4 . 
         [0055]    In  FIG. 5C , a high-voltage wire  61  includes three conductors  62 , and an insulator  63  which coats the three conductors  62  collectively. The conductor  62  is formed to be the same conductor structure of a circular single core as the above-described conductor  22  which is described with reference to  FIG. 1B . The insulator  63  is formed not to have a section of a generally glasses shape, but to have a section of an ellipse shape. The insulator  63  is so formed that the thickness A of the thinnest point of an adjacent part  64  is set to be the lower limit, which is 0.25 mm. The insulator  63  is so formed that the thickness B of a nonadjacent part  65  is the same as the above-described nonadjacent part  25  which is described with reference to  FIG. 1B . The high-voltage wire  61  is suitably used in the wire harness  8  (refer to  FIG. 1A ) which connects the motor unit  3  and the inverter unit  4 . 
         [0056]    In  FIGS. 6A to 6C , a high-voltage wire  71  includes two conductors  72 , and an insulator  73  which coats the two conductors  72  collectively. The conductor  72  is formed to be a conductor structure of a generally square single core (a structure of a rod-like rectangular conductor). The insulator  73  is formed to correspond to the outer shape of the conductor  72 . The insulator  73  is so formed that the thickness A of an adjacent part  74  is set to be the lower limit, which is 0.25 mm. The insulator  73  is so formed that the thickness B of a nonadjacent part  75  is the same as the above-described nonadjacent part  25  which is described with reference to  FIG. 1B . 
         [0057]    In  FIG. 6B , the high-voltage wire  81  includes two conductors  82  and an insulator  83  which collectively coats the two conductors  82  which are aligned vertically. The conductor  82  is formed to be a conductor structure of a flat single core (a conductor structure of a generally bus bar-like shape). The insulator  83  is formed to correspond to the outer shape of the conductor  82 . The insulator  83  is so formed that the thickness A of an adjacent part  84  in the up-down direction is set to be the lower limit, which is 0.25 mm. The insulator  83  is so formed that the thickness B of a nonadjacent part  85  is, for example, the same as the above-described nonadjacent part  25  which is described with reference to  FIG. 1B . The high-voltage wire  81  is so formed that a width K is narrow and a height L is short. 
         [0058]    In  FIG. 6C , a high-voltage wire  91  includes two conductors  92 , and an insulator  93  which coats the two conductors  92  collectively. The conductor  92  is formed to be the same conductor structure of a circular single core as the above-described conductor  22  which is described with reference to  FIG. 1  B. The insulator  93  is formed to have a section of a generally glasses shape. The insulator  93  is so formed that the thickness A of the thinnest point of an adjacent part  94  is set to be the lower limit, which is 0.25 mm. The insulator  93  is so formed that the thickness B of a nonadjacent part  95  is the same as the above-described nonadjacent part  25  which is described with reference to  FIG. 1B . The insulator  93  includes a first insulator  96  and a second insulator  97 . The first insulator  96  is extruded to coat one conductor  92  (for example, the conductor  92  at the right side of  FIG. 6C ) at the thickness A of the thinnest point of an adjacent part  94 . After the first insulator  96  is formed, the second insulator  97  is extruded to coat the first insulator  96  which is aligned with the other conductor  92  to contact the first conductor  96 , and to coat the other conductor  92  with the same resin material. 
         [0059]    As described with reference to  FIGS. 1A to 6C , according to the high-voltage wire  21  or the high-voltage wire  21 ′ of the present invention, an effect is achieved which is that the space can be saved compared to the high-voltage wire  101  of the traditional example. According to the high-voltage wire  21  or the high-voltage wire  21 ′ of the present invention, since the space can be saved, an effect is achieved which is that the weight can be reduced. 
         [0060]    In addition, according to the present invention, an effect is achieved which is that the method for producing the high-voltage wire  21  or the high-voltage wire  21 ′ for which the space can be saved and the weight can be reduced can be provided. 
         [0061]    It is apparent that various modifications can be made to the invention without changing the purpose of the invention. 
         [0062]    Although the invention is described in detail with reference to specific embodiments, it is apparent that various modifications and amendments may be made by those skilled in the art without departing from the spirit and scope of the invention. 
         [0063]    This application is based on the Japanese patent application (patent application 2011-112144) filed on May 19, 2011, the content of which is incorporated herein by reference. 
       INDUSTRIAL APPLICABILITY 
       [0064]    According to the present invention, effects are achieved which are that the width can be reduced compared to the width of a plurality of aligned traditional high-voltage wires, and therefore the space can be saved. For the high-voltage wire of the present invention, since the thickness of the insulator between the conductors is smaller than before, an effect is achieved which is that the weight can be reduced at least due to the thinner insulator. The present invention is useful since the present invention relates to a high-voltage wire which includes a plurality of conductors and an insulator that collectively coats the conductors, and a method for producing the high-voltage wire. 
       REFERENCE SIGNS LIST 
       [0000]    
       
           1  hybrid vehicle 
           2  engine 
           3  motor unit 
           4   4  inverter unit 
           5  battery 
           6  engine room 
           7  vehicle rear part 
           8 ,  9  wire harness 
           10  middle part 
           11  vehicle body floor 
           12  junction block 
           13  back end 
           14  front end 
           21 ,  21 ′ high-voltage wire 
           22  conductor 
           23  insulator 
           24  adjacent part 
           25  nonadjacent part 
           26  drum 
           27  insulator molding body 
           28 ,  30  shielding member 
           29  sheath 
           31  exterior member 
           41 ,  51 ,  61 , 71 ,  81 ,  91  high-voltage wire 
           42 ,  52 ,  62 ,  72 ,  82 ,  92  conductor 
           43 ,  53 ,  63 ,  73 ,  83 ,  93  insulator 
           44 ,  54 ,  64 ,  74 ,  84 ,  94  adjacent part 
           45 ,  55 ,  65 ,  75 ,  85 ,  95  nonadjacent part 
           96  first insulator 
           97  second insulator