JP2013223344A - Wiring member - Google Patents

Abstract

Kind Code: A1 A wiring member capable of suppressing the influence on other adjacent electric wires even when the insulator of the electric wires is damaged when the electric wires are clamped by a mold for insert molding. provide.
A wiring member 1 includes a plurality of electric wires 21, 22, 23 formed by covering outer peripheries of conductors 211, 222, 231 with insulators 212, 222, 232, and the plurality of electric wires 21, 22, 23. A resin molded body 3 that is held along a predetermined direction, and the resin molded body 3 has a position in a predetermined direction of a lead-out surface from which the plurality of electric wires 21, 22, and 23 are led out. The electric wires 21, 22 and 23 are different from each other between a pair of adjacent electric wires.
[Selection] Figure 1

Description

  The present invention relates to a wiring member that holds a plurality of electric wires with resin.

  Conventionally, an electric cable with a resin molding has been proposed in which a resin molding is integrally formed at an intermediate portion or a terminal portion of an electric cable used for electronic equipment, automobile wiring, and the like (see, for example, Patent Document 1). .

  In the electric cable with a resin molded body described in Patent Document 1, a plurality of insulated wires are arranged in parallel, and a connecting member for connecting the cables to each other is formed by insert molding using upper and lower molds at predetermined positions. Yes.

JP 2010-129200 A

  The electric cable with a resin molded body described in Patent Document 1 is formed by sandwiching a plurality of electric wires with a molding die and insert molding. In this molding die, sandwiching portions that sandwich adjacent electric wires are arranged side by side on one surface. In insert molding using this molding die, an insulator may be sandwiched between the molding dies due to a displacement of the arrangement position of the electric wire with respect to the clamping part of the molding die, and the insulator may be damaged. If both insulators of adjacent electric wires are damaged, if the distance between these electric wires is small, the current flowing through the space between the adjacent electric wires may affect the current flowing through each electric wire.

  Therefore, the present invention can suppress the influence on other adjacent electric wires even when the insulator of the electric wires is damaged when the electric wires are clamped by a mold for insert molding. It aims at providing a wiring member.

  In order to solve the above problems, the present invention comprises a plurality of electric wires formed by covering the outer periphery of a conductor with an insulator, and a resin molded body that holds the plurality of electric wires along a predetermined direction, The said resin molding provides the wiring member from which the position in the said predetermined direction of the derivation | leading-out surface where the said some electric wire is derived | led-out differs between a pair of adjacent electric wires among these electric wires.

  In addition, the difference between the positions in the predetermined direction of the lead-out surface from which the pair of adjacent electric wires are led out may be 0.5 mm or more.

  The end of the electric wire may be electrically connected to an electronic device, and the electronic device may be molded with the resin molded body.

  The wiring member according to the present invention can suppress the influence on other adjacent electric wires even when the insulator of the electric wires is damaged when the electric wires are clamped by a mold for insert molding. it can.

The wiring member which concerns on 1st Embodiment is shown, (a) is a perspective view, (b) is a top view. The metal mold | die is shown, (a) is a perspective view, (b) is a top view, (c) is a front view. The process which injection-molds resin to an electric wire is shown, (a) is the figure which has arrange | positioned the electric wire in the groove part of a metal mold | die, (b) is the figure by which resin was shape | molded on the electric wire. It is a figure which shows the wiring member which has the resin molding in which the derivation | leading-out surface where an electric wire is derived | led-out is flat between a pair of adjacent electric wires. The wiring member which concerns on 2nd Embodiment is shown, (a) is a perspective view, (b) is a top view. The wiring member which concerns on 3rd Embodiment is shown, (a) is a perspective view of a wiring member, (b) is arrange | positioned so that an electric wire may be located in the groove part of a metal mold | die, and an electronic device may be located in a cavity. (C) It is the figure by which resin was shape | molded by the electric wire and the electronic device.

[First Embodiment]
Hereinafter, a configuration example of the wiring member 1 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a wiring member 1 according to a first embodiment, wherein (a) is a perspective view and (b) is a top view.

  The wiring member 1 includes a plurality of electric wires 21, 22, 23 formed by covering the outer circumferences of the conductors 211, 221, 231 with insulators 212, 222, 232, and a plurality of electric wires 21, 22, 23 along a predetermined direction. And a resin molded body 3 to be held.

  The electric wires 21, 22, and 23 have conductors 211, 221, and 231 having a circular cross section, and coatings of insulators 212, 222, and 232 on the outer periphery of the conductors. The conductors 211, 221, and 231 are, for example, copper. The insulators 212, 222, and 232 are made of, for example, a fluororesin (ETFE (ethylene / tetrafluoroethylene copolymer), PAF (perfluoroalkyl vinyl ether copolymer resin), or the like).

  The resin molded body 3 includes a first holding portion 31 that holds the electric wire 21, a second holding portion 32 that holds the electric wire 22, and a third holding portion 33 that holds the electric wire 23. The 1st holding | maintenance part 31 has derived | led-out the electric wire 21 from the one extraction surface 31a and the other extraction surface 31b. Similarly, the 2nd holding | maintenance part 32 has derived | led-out the electric wire 22 from the one lead-out surface 32a and the other lead-out surface 32b. Similarly, the third holding portion 33 leads the electric wire 23 from one lead-out surface 33a and the other lead-out surface 33b. The resin molded body 3 has electrical insulation, and is made of, for example, PBT (polybutylene terephthalate).

  The electric wires 21, 22, and 23 are led out from the lead-out surfaces 31a and 31b, the lead-out surfaces 32a and 32b, and the lead-out surfaces 33a and 33b so as to be parallel to each other. The electric wires 21, 22, and 23 are held parallel to each other inside the resin molded body 3. Hereinafter, the extending direction of the electric wires 21, 22, and 23 inside the resin molded body 3 is referred to as a predetermined direction. That is, the resin molded body 3 holds the electric wires 21, 22, and 23 along this predetermined direction. In the present embodiment, the lead-out surfaces 31a, 31b, 32a, 32b, 33a, 33b are formed orthogonal to the predetermined direction. Moreover, the space | interval of the electric wire 21 and the electric wire 22 and the space | interval of the electric wire 22 and the electric wire 23 are the same. That is, the electric wires 21, 22, and 23 are arranged in parallel with each other so that the distance between the adjacent electric wires is the same.

The positions of the lead-out surfaces 31a to 33a and 31b to 33b in the predetermined direction are different from each other between a pair of adjacent wires among the plurality of wires 21, 22, and 23. More specifically, as shown in FIG. 1B, the resin molded body 3 has a lead-out surface 31b from which the wires 21 and 23 are led out in the predetermined direction of the lead-out surface 32b from which the wire 22 is led out. than the position in the predetermined direction of 33b, it differs by a distance h _1. Similarly, in the resin molded body 3, the position in the predetermined direction of the lead-out surface 32a from which the electric wire 22 is led out is longer than the position in the predetermined direction of the lead-out surfaces 31a and 33a from which the electric wires 21, 23 are lead out. Only h ₁ is different. In this Embodiment, since the electric wire 21 and the electric wire 22 and the electric wire 22 and the electric wire 23 are adjacent, the position in the said predetermined direction of the derivation | leading-out surface where a pair of adjacent electric wire is derived | led-out differs. That is, the lead-out surfaces 32a and 32b of the resin molded body 3 protrude in the predetermined direction as compared with the lead-out surfaces 31a, 31b, 33a and 33b. In this Embodiment, the space | interval of the electric wire 21 and the electric wire 22, and the electric wire 22 and the electric wire 23 is 2-5 mm (2 mm or more and 5 mm or less), for example. The distance h ₁ is desirably 0.5 mm or more. In the present embodiment, the distance h ₁ is 0.5 mm.

  In the resin molded body 3, the positions in the predetermined direction of the lead-out surface 31a from which the electric wire 21 is led out and the lead-out surface 33a from which the electric wire 23 is led out are the same. Similarly, in the resin molded body 3, the positions in the predetermined direction of the lead-out surface 31b from which the electric wire 21 is led out and the lead-out surface 33b from which the adjacent electric wire 23 is led out are the same.

  2A and 2B show the molds 4 and 5, wherein FIG. 2A is a perspective view, FIG. 2B is a top view, and FIG. 2C is a front view. The resin molded body 3 is insert-formed so as to cover the electric wires 21, 22, 23 with a pair of molds 4, 5. The mold 4 and the mold 5 have the same shape and size. Therefore, in FIG. 2, the structure of the metal mold | die 4 and the metal mold | die 5 is demonstrated using the same drawing, and the code | symbol corresponding to the metal mold | die 4 and the code | symbol corresponding to the metal mold | die 5 are written together in each site | part. Specifically, the code corresponding to the mold 4 is distinguished from the most significant digit being 4, and the code corresponding to the mold 5 is distinguished from being the most significant digit being 5.

  The molds 4 and 5 have inner bottom surfaces 40a and 50a and outer planes 4a and 5a, and a step is formed at the boundary between the bottom surfaces 40a and 50a and the planes 4a and 5a. The molds 4 and 5 have cavities 40 and 50 having a shape corresponding to the resin molded body 3 having bottom surfaces 40a and 50a and steps. The plane 4a and the plane 5a are formed so as to be in close contact with each other when the pair of molds 4 and 5 are combined.

  One side of the flat surfaces 4a and 5a has groove portions 412 and 532 for aligning and holding one side of the electric wire 21, and groove portions 411 and 531 for aligning and holding the other side of the electric wire 21. . The center sides of the flat surfaces 4a and 5a have groove portions 422 and 522 for aligning and holding one side of the electric wire 22, and groove portions 421 and 521 for aligning and holding the other side of the electric wire 22. . The other side of the flat surfaces 4a and 5a has groove portions 432 and 512 for aligning and holding one side of the electric wire 23 and groove portions 431 and 511 for aligning and holding the other side of the electric wire 23. .

  The interval in the width direction perpendicular to the predetermined direction between the groove portions 411, 511 and the groove portions 421, 521 and the interval in the width direction orthogonal to the predetermined direction between the groove portions 421, 521 and the groove portions 431, 531 are the same. . Similarly, the interval between the groove portions 412 and 512 and the groove portions 422 and 522 and the interval between the groove portions 422 and 522 and the groove portions 432 and 532 are the same. That is, the groove part is formed so that the mutual space | interval with an adjacent groove part may become the same.

  Next, the manufacturing process of the wiring member 1 will be described with reference to FIG. FIG. 3 shows a process of injection molding resin into the wires 21, 22, 23, (a) is a diagram in which wires are placed in the grooves of the mold 4, and (b) is a resin molding into the wires 21, 22, 23. FIG. First, the electric wire 21 is set in the groove portions 411 and 412 of the mold 4, the electric wire 22 is set in the groove portions 421 and 422, and the electric wire 23 is set in the groove portions 431 and 432.

  Next, the mold 5 is combined with the mold 4 on which the electric wires 21, 22, and 23 are set. At this time, the grooves 531 and 532 of the mold 5 are set at positions where the electric wires 21 are held, the grooves 521 and 522 are held at the electric wires 22, and the grooves 511 and 512 are held at the positions holding the electric wires 23.

  Then, resin is poured into the cavities 40 and 50 of the molds 4 and 5 while the electric wires 21, 22 and 23 are held between the mold 4 and the mold 5. When the resin is hardened and the molds 4 and 5 are removed, the wiring member 1 of FIG. 1 having the resin molded body 3 having the same shape as the cavities 40 and 50 is obtained.

  By the way, when the electric wires 21, 22, 23 are set in the molds 4, 5, as shown in FIG. 3, if the relative positional relationship between the electric wires 21, 22, 23 and the groove is shifted, the electric wires 21, 22 , 23 are sandwiched between the plane 4a of the mold 4 and the plane 5a of the mold 5, and the insulators 212, 222, 232 are applied by pressing from the molds 4, 5. May be hurt. When the insulators 212, 222, and 232 of the electric wires 21, 22, and 23 are damaged, since the distance between the adjacent electric wires is short, the electric current that flows through these electric wires is caused by the electric current that flows through the space between the adjacent electric wires. May be affected.

To perform electrical insulation between wire 21, 22, 23 reliably, because towards creeping of the resin molded body 3 is easily electricity transmitted than air, not spatial distance only takes a creeping distance L ₁ sufficiently There is a need.

  In the present embodiment, this problem is solved by shifting the positions of the lead-out surfaces 32a and 32b of the electric wire 22 from the positions of the lead-out surfaces 31a, 31b, 33a and 33b of the electric wires 21 and 23 in the predetermined direction. Yes. Next, with reference to FIG. 1B, the operation of the present embodiment will be described by comparison with the comparative example shown in FIG.

FIG. 4 is a view showing the wiring member 100 having the resin molded body 6 in which the lead-out surfaces 6a and 6b from which the electric wires 21, 22, and 23 are led out are flat between a pair of adjacent electric wires. And the distance along the surface of the molded resin 6 between adjacent wires 22 and 23 and the creeping distance L _2, the creeping distance L ₂ is equal to the distance between the wire 22 and the wire 23.

In this embodiment, the creepage distance _{L 1} between the wire 22 and the wire 23, as shown in FIG. 1 (b), outlet surface 33a of the outlet surface 32a, 32b and the electric wire 23 of the wire 22, 33b and the above predetermined by different distance h ₁ position in the direction of, the distance plus the distance h ₁ combined distance between the wire 22 and the wire 23. Therefore, if the distance between the electric wire 22 and the electric wire 23 is the same in the wiring member 1 and the wiring member 100, the creepage distance L ₁ of the wiring member ₁ is equal to the creepage distance L ₂ of the wiring member 100 (of the electric wires 22 and 23. It will be long distance h ₁ than the interval). Similarly, in the creeping distance between the wire 21 and the wire 22, the creepage distance of the wiring member 1 will be a long distance h ₁ than creepage distance of the wiring member 100 (distance between the wire 21 and the wire 22).

  Therefore, between the electric wires 21 and 22 of the wiring member 1 and between the electric wires 22 and 23 is higher than between the electric wires 21 and 22 of the wiring member 100 and between the electric wires 22 and 23. Insulation is ensured. Therefore, even if the insulator of the electric wires 21, 22, 23 is damaged, the influence on other adjacent electric wires can be suppressed.

(Effects of the first embodiment)
According to the first embodiment described above, the following effects can be obtained.

(1) The wiring member 1 according to the present embodiment is different from the resin molded body 6 of the comparative example in that the positions of the lead-out surfaces 31a to 33a and 31b to 33b of the resin molded body 3 in the predetermined direction are different. outlet surface 6a, the position in the predetermined direction 6b are compared with when flat, to ensure the creepage distance L ₁ between adjacent wires 21, 22, 23, it is possible to realize a high insulating property. That is, compared with the wiring member 100 according to the comparative example, the wiring member 1 suppresses the influence on other adjacent wires even when the insulators of the wires 21, 22, and 23 are damaged. be able to.

(2) In addition, the wiring member 1, it is possible to lengthen the creepage distance _{L 1} between the wire 21, 22, 23, wire 21, 22, 23 even shorter distance between the wire 21, 22, 23 High insulation can be realized.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 shows a wiring member 1A according to the second embodiment, where (a) is a perspective view and (b) is a top view.

In the first embodiment, the positions of the lead-out surfaces 32a and 32b from which the electric wires 22 of the resin molded body 3 are led out in the predetermined direction are the lead-out surfaces 31a, 31b, 33a and 33b from which the electric wires 21 and 23 are led out. than the position in the predetermined direction, but if described which differ by a distance _{h 1,} in this embodiment, outlet surface 71a of the wire 21, 22 of the wiring member 1A is derived, 71b, 72a 72b, 73a, 73b have different shapes in the predetermined direction. Since the configuration other than this is the same as that of the wiring member 1 according to the first embodiment, components having the same functions as those described in the first embodiment are denoted by the same reference numerals. The duplicate description is omitted.

  The resin molded body 7 includes a first holding portion 71 that holds the electric wire 21, a second holding portion 72 that holds the electric wire 22, and a third holding portion 73 that holds the electric wire 23. The 1st holding | maintenance part 71 has derived | led-out the electric wire 21 from one derivation surface 71a and the other derivation surface 71b. Similarly, the 2nd holding | maintenance part 72 has derived | led-out the electric wire 22 from the one lead-out surface 72a and the other lead-out surface 72b. Similarly, the third holding portion 73 leads the electric wire 23 from one lead-out surface 73a and the other lead-out surface 73b.

Shape for deriving the direction of one side of the wire 21, 22 of the resin molded body 7 is derived, it derives surface 71a towards the outlet surface 72a, it differs by each distance _{h 2} from the position in the predetermined direction 73a, The lead-out surface 71a and the lead-out surface 73a are formed at the same position in the predetermined direction. Similarly, the shape of the resin molded body 7 with respect to the lead-out direction on the other side where the electric wires 21, 22, 23 are led out is the distance h _{2 in the} lead-out surface 72b than in the predetermined direction of the lead-out surfaces 71b, 73b. However, the derivation surface 71b and the derivation surface 73b are formed at the same position in the predetermined direction. That is, the lead-out surfaces 71a, 71b, 73a, 73b of the resin molding 7 protrude in the predetermined direction as compared with the lead-out surfaces 72a, 72b. In this Embodiment, the space | interval of the electric wire 21 and the electric wire 22, and the electric wire 22 and the electric wire 23 is 2-5 mm, for example. The distance h ₂ is desirably 0.5 mm or more. In the present embodiment, the distance h ₂ is 0.5 mm.

In this embodiment, the creepage distance _{L 3} between the wire 21 and the wire 22, outlet surface 71a of the wire 21, 71b and outlet surface 72a of the wire 22, 72b and is by a position in the predetermined direction are different The distance h _{2 is} longer than the distance between the electric wires 21 and 22. Therefore, high insulation is ensured between the electric wires 21 and 22. Similarly, the creeping distance _{L 3} between the wire 22 and the wire 23, outlet surface 72a of the wire 22, 72b and outlet surface 73a of the wire 23, 73b and is by a position in the predetermined direction are different, the wire 22 And h ₂ longer than the distance between the electric wires 23. Therefore, high insulation is ensured between the electric wire 22 and the electric wire 23.

  According to the present embodiment, it is possible to obtain the same operations and effects as those described for the first embodiment.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. 6A and 6B show a wiring member 1B according to the third embodiment, wherein FIG. 6A is a perspective view of the wiring member 1B, and FIG. 6B shows the positions of the wires 21 and 22 in the grooves 441 and 442 of the mold 4A. FIG. 6 is a diagram in which the electronic device 9 is positioned in the cavity 45, and (c) is a diagram in which a resin is molded on the electric wires 21, 22 and the electronic device 9.

  In the first embodiment, the resin molded body 3 is formed by insert molding so as to cover and hold the electric wires 21, 22, and 23, but in this embodiment, in addition to the electric wires 21 and 22, an electronic device 9 is also covered with the resin molded body 8. Since the other configuration is the same as that of the wiring member according to the first embodiment, components having the same functions as those described in the first embodiment are denoted by the same reference numerals. A duplicate description is omitted.

  The wiring member 1 </ b> B in the present embodiment includes electric wires 21 and 22, a resin molded body 8, and an electronic device 9. One end of the electric wires 21 and 22 is electrically connected to the electronic device 9. One side of the electric wires 21 and 22 and the electronic device 9 are molded by a resin molded body 8.

The resin molded body 8 has lead-out surfaces 81b and 82b that lead out the other side of the electric wires 21 and 22. Outlet surface 81a of the wire 21, 22 of the resin molded body 8 is derived, 81b are formed so only different _{h 3} than the position in the predetermined direction outlet surface 82a, 82b. That is, the lead-out surface 81b of the resin molded body 8 protrudes in the predetermined direction as compared with the lead-out surface 82b. In this Embodiment, the space | interval of the electric wire 21 and the electric wire 22 is 2-5 mm, for example. The distance h ₃ is desirably 0.5 mm or more. In the present embodiment, the distance h ₃ is 0.5 mm.

  Since the pair of molds have the same shape, only the mold 4A on one side will be described below. The mold 4A has an inner bottom surface 45a and an outer flat surface 44a, and a step is formed at the boundary between the bottom surface 45a and the flat surface 44a. The mold 4A has a cavity 45 having a shape corresponding to the resin molded body 8 having a bottom surface 45a and a step.

  One side of the flat surface 44a has a groove portion 441 for aligning and holding one side of the electric wire 21. The other side of the flat surface 44a has a groove portion 442 for aligning and holding one side of the electric wire 22.

  Next, the manufacturing process of the wiring member 1B will be described. First, it sets so that the electric wires 21 and 22 may be clamped in the groove parts 441 and 442 of the mold 4A. The electronic device 9 is disposed in the space of the cavity 45.

  Next, a pair of molds (not shown) is combined with the mold 4A on which the electric wires 21 and 22 are set. Then, resin is poured into the cavity 45 of the mold 4A while the electric wires 21 and 22 are held between the mold 4A and a pair of molds. When the resin hardens and the mold 4A is removed, the wiring member 1B having the resin molded body 3 having the same shape as the cavity 45 is obtained.

In this embodiment, the creepage distance L ₄ between the wire 21 and the wire 22, and the outlet surface 82b of the outlet surface 81b and the electric wire 22 of the wire 21 by a position in the predetermined direction is different, the wire 21 It is longer by h ₃ than the distance from the electric wire 22. Therefore, high insulation is ensured between the electric wires 21 and 22.

  According to the present embodiment, it is possible to obtain the same operations and effects as those described for the first embodiment. Furthermore, the electronic device 9 can obtain insulation by being molded by the resin molded body 8.

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

  Further, the present invention can be implemented with appropriate modifications without departing from the scope of the invention. For example, in the above embodiment, three or two electric wires are used, but any number of electric wires may be used as long as it is two or more.

  Moreover, in the said embodiment, although the height of the derivation | leading-out surfaces 31a and 31b which derive | lead out the electric wires 21 and 23 and the derivation | leading-out surfaces 33a and 33b was the same, each height may differ.

  Moreover, you may use the insulated bus bar etc. instead of the electric wires 21,22,23.

DESCRIPTION OF SYMBOLS 1,1A, 1B, 100 ... Wiring member 3,6,7,8 ... Resin molding, 4,4A, 5 ... Mold, 4a, 5a, 44a ... Plane, 9 ... Electronic equipment 21,22,23 ... Electric wire 31,71 ... 1st holding part, 32,72 ... 2nd holding part, 33,73 ... 3rd holding part, 6a, 6b, 31a, 31b, 32a, 32b, 33a, 33b, 71a, 71b, 72a, 72b, 73a, 73b, 81b, 82b ... leading surface, 40,45,50 ... cavity, 40a, 45a, 50a ... bottom surface, 211,221,231 ... conductor, 212,222,232 ... insulator, 411, 412, 421, 422, 431, 432, 441, 442, 511, 512, 521, 522, 531, 532...

Claims (3)

A plurality of electric wires formed by covering the outer periphery of the conductor with an insulator;
A resin molded body that holds the plurality of electric wires along a predetermined direction;
The resin molded body has a position in the predetermined direction of a lead-out surface from which the plurality of wires are led out different from each other between a pair of adjacent wires among the plurality of wires.
Wiring member. The difference between the positions in the predetermined direction of the lead-out surface from which the pair of adjacent electric wires are led out is 0.5 mm or more,
The wiring member according to claim 1. The end of the electric wire is electrically connected to an electronic device, and the electronic device is molded by the resin molded body,
The wiring member according to claim 1 or 2.

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