JP2012234636A - Ferromagnetic insulation wire and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide insulation wires which can be bundled without using a binding member, e.g. a winding tape, and can be attached to a vehicle, or the like, without requiring other member, e.g. a clamp, and to provide a wire harness.SOLUTION: A conductor 2 consists of a permanent magnet having a maximum energy product ((BH)) of 2 kJ/mor more, and a plurality of ferromagnetic wires 11 each serves as a magnet are bundled by the magnetic force of the wire itself, thus configuring a wire harness 10.

Description

  The present invention relates to a ferromagnetic insulated wire and a wire harness.

  Conventionally, the wire harness 100 used for vehicles, such as a motor vehicle, is comprised by combining the some electric wire 101 and bundling the electric wire 101, as shown in FIG. An electric wire 101 used in the wire harness 100 is generally one in which a conductor 102 such as a copper wire or aluminum is covered with an insulator 103 such as a resin film.

  In order to bundle the wires of the wire harness 100, the wire 101 is wound around using a binding material 104 such as a tape (see, for example, Patent Document 1).

  When the wire harness 100 is assembled at a predetermined position of a vehicle or the like, the wire harness 100 is fixed to the vehicle 111 using an attachment member such as a clamp 110 as shown in FIG. 2).

  Further, as shown in FIG. 12B, the wire harness 100 may be bonded and fixed to the vehicle 111 using a hot melt adhesive 112.

JP 2003-217357 A Japanese Patent Laid-Open No. 10-201058

  Conventionally, when the wire harness 100 is manufactured, a binding material (sometimes referred to as a restraining member) 104 such as a tape is required to bundle the electric wires in the manufacturing process. Moreover, in the wire harness manufacturing process, the operation | work which winds a tape etc. is required and there existed a problem that work took time.

  Conventionally, in the process of assembling the wire harness 100 to the vehicle 111, attachment members other than the wire harness 100 such as the clamp 110 and the hot melt adhesive 112 are required. Further, when the clamp 110 is used, it is necessary to attach the clamp 110 to the vehicle 111 or the like, and there is a problem that it takes time and effort. In addition, when the hot melt adhesive 112 is used, there is a problem that an operation of applying the hot melt adhesive is necessary, which takes time and labor, and a hot melt adhesive applicator is required.

  The present invention is intended to solve the above-described problems of the prior art, and it is possible to bundle electric wires without using a binding material such as tape winding, and to a vehicle or the like without other members such as a clamp. It is an object to provide an insulated wire and a wire harness that can be attached.

  In order to solve the above problems, the ferromagnetic insulated wire of the present invention is characterized in that at least the conductor or the auxiliary wire is made of a ferromagnetic material.

In the ferromagnetic insulated wire, wherein the ferromagnetic material, relative permeability (mu _r) can be used two or more high-permeability material.

In the ferromagnetic insulated wire, the ferromagnetic material may be a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more.

  The ferromagnetic insulated wire may be configured such that the conductor is made of an assembly of a plurality of strands, and the strands are made of a ferromagnetic body.

  The ferromagnetic insulated wire is configured such that the conductor is composed of an assembly of a plurality of strands, and the plurality of strands is a combination of a strand composed of a ferromagnetic material and a strand composed of a non-ferromagnetic material. be able to.

In the wire harness of the present invention, at least a conductor or an auxiliary wire uses a ferromagnetic insulated wire made of a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more. The gist is that they are bundled together.

In the above-mentioned wire harness, at least a conductor or an auxiliary wire is combined with a ferromagnetic insulated wire made of a high magnetic permeability material having a relative permeability (μ _r ) of 2 or more in combination with a ferromagnetic insulated wire made of the permanent magnet. The ferromagnetic insulated wires can be configured to be bundled.

  Since the ferromagnetic insulated wire of the present invention is configured such that at least one of the conductor and the auxiliary wire is made of a ferromagnetic material, when a permanent magnet is used as the ferromagnetic material, the magnetized wire is used. It is possible to bundle a plurality of electric wires by themselves. Further, when a high permeability material is used for the ferromagnetic material, it can be attracted to the magnetized electric wire.

In the wire harness of the present invention, at least a conductor or an auxiliary wire uses a ferromagnetic insulated wire made of a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more. Since they are bundled, they can be spontaneously bundled by attracting the ferromagnetic insulated wires together.

  Unlike the conventional wire harness, the wire harness of the present invention does not require a binding material such as a tape or an adhesive, a hot melt adhesive applicator, and the like, and can reduce the number of parts.

  Further, since the plurality of ferromagnetic insulated wires attract each other in the wire harness of the present invention, the labor for assembling the insulated wires using a binding material can be saved, and the number of harness assembly steps can be reduced.

  Furthermore, when the wire harness of the present invention is routed to a vehicle or the like, a permanent magnetized wire harness can be directly joined and fixed to the vehicle body or the like, so that an attaching operation such as an adhesive or a clamp becomes unnecessary. The number of man-hours for harness routing work can be reduced.

It is sectional drawing which shows an example of the ferromagnetic insulated wire of this invention. It is sectional drawing which shows the aspect of the ferromagnetic insulated wire of this invention. (A), (b) is sectional drawing which shows the aspect of the ferromagnetic insulated wire of this invention. (A), (b) is sectional drawing which shows the other aspect of the ferromagnetic insulated wire of this invention. It is sectional drawing which shows the aspect of the wire harness of this invention. It is sectional drawing which shows the aspect of the wire harness of this invention. It is sectional drawing which shows the aspect of the wire harness of this invention. It is sectional drawing which shows the aspect of the wire harness of this invention. It is sectional drawing which shows the aspect of the wire harness of this invention. It is sectional drawing which shows the usage example of the wire harness of this invention. It is sectional drawing which shows the conventional wire harness. (A), (b) is sectional drawing which shows the usage example of the conventional wire harness.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an example of an insulated wire of the present invention. A ferromagnetic insulated wire 1 shown in FIG. 1 is formed by covering a conductor 2 made of a ferromagnetic material having conductivity with an insulator 3.

  As for the ferromagnetic insulated wire 1 shown in FIG. 1, the conductor 2 is comprised from the single wire. As for the ferromagnetic insulated wire 1, the conductor 2 may be comprised by the aggregate | assembly of several strands. 2, 3 (a), and 3 (b) are cross-sectional views showing other modes of the ferromagnetic wire. In the ferromagnetic insulated wire of FIG. 2, the conductor 2 is composed of a plurality (seven) of strands 21, and the seven strands 21 are all strands 21 made of a ferromagnetic material.

  In the ferromagnetic insulated wire 1 of FIG. 3A, the conductor 2 is composed of an assembly of seven strands. Of the seven strands of the conductor 2, three are strands 21 made of a ferromagnetic material, and the other three are strands 22 made of a non-ferromagnetic material. Thus, the conductor 2 made of a ferromagnetic material can be composed of an assembly of a wire 21 made of a ferromagnetic material and a wire 22 made of a non-ferromagnetic material.

  In the ferromagnetic insulated wire 1 of FIG. 3B, the conductor 2 is composed of an assembly of seven strands. Of the seven strands of the conductor 2, the central strand 21 is made of a ferromagnetic material, and the surrounding six strands 22 are made of a non-ferromagnetic material.

  As shown in FIGS. 2, 3 (a) and 3 (b), in the ferromagnetic insulated wire 1, when the conductor 2 is composed of a plurality of strands, the number of the plurality of strands is not particularly limited. The assembly of strands may be a simple assembly or an assembly of stranded wires.

  A material having a strong magnetic action is used for the ferromagnet of the conductor 2 (or including a ferromagnet used for the strand 21 made of a ferromagnet). As a specific material of the ferromagnet, use a permanent magnet that has conductivity and can attract each other and other ferromagnets, or a high permeability material that is attracted to the permanent magnet. Can do. Examples of these materials include iron, nickel, cobalt, and alloys containing these metals.

  The strand 22 made of a non-ferromagnetic material can be used as long as it is a conductor other than a ferromagnetic material such as a paramagnetic material or a diamagnetic material.

  The conductor 2 preferably has a specific resistance of 1 μΩm or less. The specific resistance of the conductor 2 is more preferably 0.5 μΩm or less.

  The ferromagnetic insulated wire 1 using a permanent magnet as the material of the conductor 2 (sometimes referred to as a magnetized ferromagnetic insulated wire) is magnetized, so that when used as a wire harness described later, It is possible to suck and integrate an insulated wire using a high magnetic permeability material as a conductor.

The permanent magnet used as the material of the conductor 2 is made of a high holding force material having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more. Furthermore, the maximum energy product of a preferable conductor is 3 kJ / m ³ or more.

Such a high coercive force material having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more includes martensite steel, Fe—Cr—Co, alnico, and strontium ferrite (SrO · 6Fe ₂ O ₃ ). And ferrite such as barium ferrite (BaO.6Fe ₂ O ₃ ), rare earth cobalt such as samarium cobalt (Sm ₂ Co ₁₇ ), and rare earth iron such as neodymium iron and samarium iron nitrogen.

The ferromagnetic insulated wire 1 using a high magnetic permeability material as the material of the conductor 2 is attracted to the magnetized ferromagnetic insulated wire. Hereinafter, a ferromagnetic insulated wire using a high magnetic permeability material may be referred to as a ferromagnetic insulated wire attracted by a magnet. The high permeability material used for the material of the conductor 2 has a relative permeability (μ _r ) of 2 or more. A more preferable high-permeability material of the conductor 2 has a relative permeability (μ _r ) of 10 or more. The relative permeability μ _r is a ratio of the material permeability μ and the vacuum permeability μ ₀ expressed by the following formula (1).
μ _r = μ / μ ₀ (1)

Such relative magnetic permeability (mu _r) high-permeability material of the conductor 2 is 2 or more, electromagnetic soft iron, Fe-Si, Fe-Al , Fe-Co-V, iron such as Fe-Si-Al And iron-based alloys, Fe-Ni, Fe-Ni-Mn, Fe-Ni-Mo, Fe-Ni-Cr-Cu, Fe-Ni-Nb and other permalloy alloys, Mn-Zn-based, Ni-Zn-based, Examples thereof include ferrite compounds such as Cu—Zn, and amorphous compounds such as Fe—B—Si—C and Fe—B—Si.

  The ferromagnetic insulated wire 1 of the said aspect is comprised using the ferromagnetic body for the conductor 2. FIG. In the ferromagnetic insulated wire 1 of the present invention, the insulator 3 may be a non-ferromagnetic material or a ferromagnetic material.

In the case of using a ferromagnetic material for the insulator 3, the insulator 3 can be an insulating bond magnet, plastic magnet, rubber magnet, or the like. These are obtained by dispersing magnetic powder of a high holding force material having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more in a binder resin such as rubber or plastic. As said magnetic powder, what was illustrated as a material of the permanent magnet whose maximum energy product [(BH) _max ] of the conductor 2 is 2 kJ / m < ³ > or more can be used.

In the case of using a ferromagnetic insulator 3, the insulator 3, which powder relative permeability (mu _r) is 2 or more high permeability material dispersed kneaded rubber, a binder resin such as plastic Etc. can be used. As the powder of the high magnetic permeability material, those exemplified as the high magnetic permeability material in which the conductor 2 has a relative magnetic permeability (μ _r ) of 2 or more can be used.

  Examples of the binder resin of the insulator 3 include polyamide resin, epoxy resin, PPS resin, synthetic rubber, polyethylene, polypropylene, EVA, EMA, EEA, polyester elastomer, polyurethane elastomer, PET, PBT, PVC, PVDF, and PVDC. , Chlorinated polyethylene, polyolefin elastomer, styrene elastomer and the like.

  When a non-ferromagnetic material is used for the insulator 3, a resin that is used as an insulator of a normal insulated wire is used. Examples of such a resin include the above binder resins.

  4A and 4B are cross-sectional views showing other embodiments of the ferromagnetic insulated wire of the present invention. As shown in FIGS. 4A and 4B, the ferromagnetic insulated wire 1 of the present invention may be configured by covering the conductor 2 and the auxiliary wire 4 with an insulator 3. The auxiliary wire 4 can be formed so as to be disposed in parallel with the conductor 2 and covered with the insulator 3 as shown in FIG. Further, the auxiliary wire 4 may be arranged at the center of the conductor 2 so that the plurality of conductors 2 surround the periphery of the auxiliary wire 4 as shown in FIG.

  As the auxiliary wire 4, for example, a tension member for reinforcing an electric wire made of SUS wire or the like, a ferromagnetic wire for imparting ferromagnetism to the electric wire using a ferromagnetic material, or the like can be used. When the ferromagnetic insulated wire 1 of the present invention is configured using such an auxiliary wire 4, at least one of the conductor 2, the insulator 3, and the auxiliary wire 4 only needs to be configured of a ferromagnetic material. That is, in the ferromagnetic insulated wire 1, only the conductor 2, only the insulator 3, only the auxiliary wire 4, or any combination of the conductor 2 and the auxiliary wire 4 can be made of a ferromagnetic material.

  In addition, when the conductor 2 is comprised from a nonmagnetic material, normal electric wire conductors, such as aluminum, copper, and those alloys, can be used.

When the auxiliary wire 4 is composed of a ferromagnetic material, the ferromagnetic wire 1 is attracted to the magnet by using a high permeability material having a relative permeability (μ _r ) of 2 or more as the material of the auxiliary wire 4. can do. Further, by using a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more for the auxiliary wire 4, the magnetized ferromagnetic insulated wire 1 can be configured.

  When a permanent magnet is used for the auxiliary wire 4 and a high magnetic permeability material is used for the auxiliary wire 4, the material exemplified for the conductor 2 described above is used. The auxiliary wire 4 is different from the material of the conductor 2 and the insulating material 3 and can be used without limitation even with a high magnetic permeability material having no electrical conductivity or insulation, a permanent magnet or the like.

Hereinafter, the wire harness of the present invention will be described. 5-9 is sectional drawing which shows the aspect of the wire harness of this invention. A wire harness 10 shown in FIG. 5 is a combination of two ferromagnetic insulated wires 11 and two insulated wires bundled together. The two ferromagnetic wires 11, 11 are magnetized by covering a conductor 2 a made of a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more with a non-ferromagnetic insulator 3. It is a ferromagnetic wire.

  In the wire harness 10 shown in FIG. 5, since the ferromagnetic insulated wire 11 is magnetized, it is not necessary to use a binding material such as a tape when attracting and bundling each other. Moreover, when producing the wire harness 10, the operation | work which mounts restraint materials, such as a tape winding, is also unnecessary.

The wire harness 10 shown in FIG. 6 is composed of two ferromagnetic insulated wires. One insulated wire is a ferromagnetic insulated wire 11 in which a conductor 2a having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more is coated with an insulator 3 and magnetized. Other insulated wire is relative magnetic permeability (mu _r) is 2 or more conductors 2b is coated a ferromagnetic insulated wire 12 is attracted to the magnet. The two insulated wires 11 and 12 are magnetized and attracted to the magnetized ferromagnetic insulated wire 11 by magnetizing the ferromagnetic insulated wire 12 so that the two insulated wires 11 and 12 can be used without using a restraining material. The ferromagnetic insulated wires 11 and 12 can be bundled.

  A wire harness 10 shown in FIG. 7 is configured by combining two magnetized ferromagnetic insulated wires 11 and one ferromagnetic insulated wire 12 attracted by the magnets.

  A wire harness 10 shown in FIG. 8 is configured by combining 22 magnetized ferromagnetic insulated wires 11. Magnetized ferromagnetic insulated wires 11 are attracted and integrated by magnetic force. The wire harness 10 of the present invention may be configured by combining three or more ferromagnetic insulated wires 11 magnetized in this way.

  The wire harness 10 shown in FIG. 9 is a combination of 11 ferromagnetic insulated wires 11 that have been magnetized and 11 ferromagnetic insulated wires 12 that are attracted by the magnet, for a total of 22 ferromagnetic insulated wires. It is comprised by. The wire harness 10 of the present invention may be configured by combining two or more magnetized ferromagnetic wires 11 and a ferromagnetic insulated wire 12 attracted by two or more magnets.

FIG. 10 is a sectional view showing an example of use of the wire harness of the present invention. The wire harness 10 shown in FIG. 8 is a bundle of 22 ferromagnetic insulated wires 11 in which a conductor 2a having a maximum energy product of 2 kJ / m ³ or more is covered with an insulator. The wire harness 10 is bundled by the magnetic force of the ferromagnetic insulated wire 11 itself. The wire harness 10 is fixed to a vehicle body 20 of an automobile formed of an iron plate or the like by a magnetic force. Thus, the wire harness 10 can be fixed to the vehicle body by its own magnetic force. Therefore, the fixing member for fixing wire harnesses, such as a clamp, a hot-melt-adhesive agent, and a double-sided tape, is unnecessary like the conventional wire harness.

  In this case, the wire harness 10 may be composed of a ferromagnetic insulated wire 11 magnetized and a ferromagnetic insulated wire 12 attracted by a magnet as shown in FIG. Moreover, if a magnet is arrange | positioned and affixed in the predetermined position for fixing wire harnesses, such as the vehicle body 20, it will be easy to fix the wire harness 10 in the position.

  The wire harness of the present invention can be suitably used as an automobile wire harness.

  Examples of the present invention and comparative examples are shown below. The present invention is not limited to these examples.

Example 1
A wire harness was constructed as shown in FIG. 10 using 22 polyethylene-coated electric wires in which some of the conductor wires were composed of Fe—Cr—Co magnets. The maximum energy product [(BH) _max ] of the electric wire was 3 kJ / m ³ . This wire harness was bound by magnetic force, and its electric wire binding property was good.

Comparative Example 1
An insulated wire in which the conductor of the polyethylene-coated wire in Example 1 was changed to a copper wire was prepared. The maximum energy product [(BH) _max ] of the electric wire was less than 0.5 kJ / m ³ . An attempt was made to construct a wire harness using this wire in the same manner as in Example 1, but the wire harness alone could not be bound, and the wire binding property was poor.

DESCRIPTION OF SYMBOLS 1 Ferromagnetic insulated wire 2 Conductor 2a made of a ferromagnetic material Conductor 2b having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more Conductor 2 having a relative permeability (μ _r ) of 2 or more 3 Insulator 10 Wire harness 11 Magnetized ferromagnetic insulated wire 12 Ferromagnetic insulated wire attracted by magnet

Claims (7)

  A ferromagnetic insulated wire characterized in that at least a conductor or an auxiliary wire is made of a ferromagnetic material. The ferromagnetic material, ferromagnetic insulated wire according to claim 1, wherein the relative magnetic permeability (mu _r) is used two or more high-permeability material. 2. The ferromagnetic insulated wire according to claim 1, wherein the ferromagnetic material is a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more.   The ferromagnetic insulated wire according to any one of claims 1 to 3, wherein the conductor is made of an assembly of a plurality of wires, and the wires are made of a ferromagnetic material.   The conductor is composed of an assembly of a plurality of strands, and the plurality of strands is a combination of a strand composed of a ferromagnetic material and a strand composed of a non-ferromagnetic material. The ferromagnetic insulated wire according to any one of claims. At least a conductor or an auxiliary wire is a bundle of a plurality of ferromagnetic insulated wires using a ferromagnetic insulated wire made of a permanent magnet having a maximum energy product [(BH) _max ] of 2 kJ / m ³ or more. A wire harness characterized by that. At least the conductor or auxiliary wire rod, a ferromagnetic insulated wire relative permeability (mu _r) is composed of two or more of high magnetic permeability material, in combination with a ferromagnetic insulated wire consisting of the permanent magnet, a plurality of ferromagnetic insulated wire The wire harness according to claim 6, wherein the wire harness is bundled.

Images