JP2014067521A - Production method of wire harness, production method of wire harness exterior package body, wire harness, and wire harness exterior package body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method or the like of a wire harness that has a shield function that blockades a wire bundle of an inside in an electromagnetic manner by a nonwoven cloth exterior package structure without using a shield material.SOLUTION: Copper plating treatment is performed on a tabular nonwoven cloth 3 to obtain a copper plating processed nonwoven cloth 3p. In addition, thermoforming treatment is performed in a state in which at least one part of a wire bundle is covered by a copper plating processed nonwoven cloth 3p, thereby a wire harness 1 that has a nonwoven cloth exterior package structure 30p that is formed to cover a circumference of a part of a wire bundle, and has a shield function can be obtained.

Description

  The present invention relates to a method for manufacturing a wire harness having a shielding function, a method for manufacturing a wire harness exterior body, and the like.

  As a vehicle-mounted wire harness, there is a wire harness that uses a nonwoven fabric protective member formed by heat-molding (hot pressing) a nonwoven fabric in a state of covering an electric wire bundle.

  In such a non-woven fabric outer structure wire harness, in order to provide a shielding function so as to electromagnetically shield the inner wire bundle, it was necessary to perform a shielding process during manufacturing. For example, there is a manufacturing method disclosed in Patent Document 1 as a manufacturing method accompanied by a shield process when manufacturing a wire harness having a nonwoven fabric exterior structure. In Patent Document 1, the shielding process is simplified by performing heat molding using a nonwoven fabric in a state where an electric wire bundle is sandwiched between two shielding materials.

JP 2011-159564 A

  As described above, conventionally, in order to impart a shielding function to a wire harness having a nonwoven fabric exterior structure, it has been necessary to perform a shielding process using a shielding material at the time of manufacture. Since the shield process using the shield material is a relatively difficult operation, there is a problem that labor and cost are required for manufacturing the wire harness.

  This invention was made in order to solve the above-mentioned problems, and without using a shield material, a method of manufacturing a wire harness having a shield function for electromagnetically blocking an internal wire bundle by a nonwoven fabric exterior structure, etc. With the goal.

  According to a first aspect of the present invention, there is provided a method of manufacturing a wire harness comprising: (a) applying a metal plating process to a nonwoven fabric to obtain a plated nonwoven fabric; and (b) thermoforming the plated nonwoven fabric together with a bundle of electric wires. And obtaining a nonwoven fabric exterior structure covering at least a part of the outer periphery of the wire bundle.

  Invention of Claim 2 is a manufacturing method of the wire harness of Claim 1, Comprising: The said plated nonwoven fabric contains a sheet-like nonwoven fabric, and the said step (b) includes the said wire bundle as the said nonwoven fabric. It is characterized in that it is heat-molded in a state of being wound by a.

  Invention of Claim 3 is a manufacturing method of the wire harness of Claim 1, Comprising: The said plated nonwoven fabric each contains the 1st and 2nd nonwoven fabric of plate shape, The said step (b) It heat-molds in the state which pinched | interposed the said wire bundle between the plate-shaped 1st and 2nd nonwoven fabrics, It is characterized by the above-mentioned.

  According to a fourth aspect of the present invention, there is provided a method for manufacturing a wire harness exterior body comprising: (a) applying a metal plating process to a nonwoven fabric to obtain a plated nonwoven fabric; and (b) thermoforming the plated nonwoven fabric. And obtaining a wire harness exterior body having a hollow region capable of protecting the outer periphery of at least a part of the wire bundle.

  According to a fifth aspect of the present invention, the wire harness includes a wire bundle and a nonwoven fabric exterior structure that covers at least a part of the outer periphery of the wire bundle, and the nonwoven fabric exterior structure is formed by heat-molding a plated nonwoven fabric. It is formed by this.

  According to a sixth aspect of the present invention, the wire harness exterior body includes a nonwoven fabric exterior structure having a hollow region capable of protecting at least a part of the outer periphery of the wire bundle, and the nonwoven fabric exterior structure is formed by heat-molding a plated nonwoven fabric. It is formed by being done.

  The present invention according to claim 1 is a wire in which an inner wire bundle is electromagnetically shielded by a nonwoven fabric exterior structure without using a shielding material separately by executing step (b) using a plated nonwoven fabric. A harness can be obtained relatively inexpensively.

  The invention of claim 2 can provide a shield-protected wire harness by using a single sheet-like nonwoven fabric.

  According to the third aspect of the present invention, a wire harness can be obtained relatively easily by heat-molding a wire bundle sandwiched between two plate-like nonwoven fabrics.

  The present invention according to claim 4 is a wire harness exterior body that can electromagnetically shield an electric wire bundle when the electric wire bundle is stored in a hollow region without using a separate shielding material by using a plated non-woven fabric. Can be obtained.

  Since the present invention according to claim 5 can electromagnetically shield the inner wire bundle by the nonwoven fabric exterior structure obtained by heat-molding the plated nonwoven fabric, it is not necessary to separately provide a shielding material, It can be obtained relatively inexpensively.

  The present invention according to claim 6 is provided with a separate shielding material because the wire bundle disposed in the hollow region can be electromagnetically shielded by the exterior structure obtained by heat-molding the plated nonwoven fabric. Since it is not necessary, it can be obtained relatively inexpensively.

It is explanatory drawing which shows the manufacturing process of the copper plating processed nonwoven fabric in Embodiment 1. FIG. FIG. 2 is an explanatory view showing the wire harness of the first embodiment after manufacturing. It is explanatory drawing (the 1) which shows the 1st aspect of the manufacturing process of the nonwoven fabric exterior structure in Embodiment 1. FIG. It is explanatory drawing (the 2) which shows the 1st aspect of the manufacturing process of the nonwoven fabric exterior structure in Embodiment 1. FIG. It is explanatory drawing which shows the 2nd aspect of the manufacturing process of the nonwoven fabric exterior structure in Embodiment 1. FIG. It is explanatory drawing which shows the wire harness exterior body manufactured with the manufacturing method of Embodiment 2 of this invention.

<Embodiment 1: Manufacturing method of wire harness>
1-4 is explanatory drawing which shows the manufacturing method of the wire harness which is Embodiment 1 of this invention. FIG. 1 is an explanatory view showing a manufacturing process of a copper plated non-woven fabric. FIG. 2 is an explanatory view showing the wire harness of the first embodiment after completion.

  Hereinafter, the manufacturing method of the wire harness of Embodiment 1 is demonstrated. First, the plate-like nonwoven fabric 3 shown in FIG. 1 (a) is subjected to a copper plating process to obtain a copper-plated nonwoven fabric 3p shown in FIG. 1 (b). As the copper plating treatment, for example, a general method (dry plating, wet plating, etc.) by vapor deposition or immersion using copper sulfate or the like is used. In addition, the copper plating processed non-woven fabric 3p after the copper plating process is copper-plated on the entire surface on at least one of the front surface and the back surface. However, depending on the specifications, a mode in which copper plating is selectively performed not on the entire surface but on a part of the component length direction (longitudinal direction) (for example, about a half region) may be employed.

  And as shown in FIG. 2, the outer periphery of a part of the wire bundle 12 is covered by performing a heat molding process (hot press) in a state in which at least a part of the wire bundle 12 is covered with the copper plated non-woven fabric 3p. Thus, a cylindrical nonwoven fabric exterior structure 30p formed can be obtained.

  As a result, the wire harness 1 in which the outer periphery of a part of the wire bundle 12 is protected by the nonwoven fabric exterior structure 30p is completed. At this time, since the nonwoven fabric exterior structure 30p is obtained using the copper-plated nonwoven fabric 3p, it has a shield function of electromagnetically blocking the inner wire bundle 12.

  Thus, the manufacturing method of the wire harness of Embodiment 1 has obtained the nonwoven fabric exterior structure 30p by performing a heat-molding process with respect to the copper plating processed nonwoven fabric 3p. For this reason, without using a shielding material separately, the wire harness which has the shielding function which interrupted | blocked the internal electric wire bundle 12 electromagnetically by the nonwoven fabric exterior structure 30p can be obtained comparatively cheaply.

(First aspect)
As a manufacturing process of the nonwoven fabric exterior structure 30 using the copper plated non-woven fabric 3p, there are first and second modes described below.

  FIG.3 and FIG.4 is explanatory drawing which shows the 1st aspect of the manufacturing process of a nonwoven fabric exterior structure. Hereinafter, with reference to FIG.3 and FIG.4, the process content of a 1st aspect is demonstrated.

  As shown in FIG. 3, the hot press mold 50 used to obtain the nonwoven fabric exterior structure 30 p includes a lower mold 60 and an upper mold 70.

  The lower mold 60 is a long member formed of a metal or the like having excellent thermal conductivity, and a lower mold surface 62 is formed on one main surface (upper surface) thereof. The lower mold surface 62 is generally formed in a groove shape that opens upward and on both ends. The length of the lower mold surface 62 in the longitudinal direction is formed to be the same as the length of the portion to be protected (the portion to be covered with the nonwoven fabric exterior structure 30p) in the wire bundle 12.

  Moreover, the bottom part of the longitudinal direction both ends of the lower mold | type surface 62 is formed in the cross-sectional semicircle shape which has an internal diameter according to the outer shape of the nonwoven fabric exterior structure 30p.

  The upper mold 70 is a long member formed of a metal or the like having excellent thermal conductivity, and an upper mold surface 72 formed in a groove shape having a cross-sectional arc shape is formed on one main surface (lower surface) thereof. . The upper mold surface 72 is formed to have a width that can be disposed in the lower mold surface 62 while closing the upper opening of the lower mold surface 62. The lower surface of the upper mold surface 72 is formed in a semicircular cross section having an inner diameter corresponding to the outer shape of the nonwoven fabric exterior structure 30p.

  Then, by arranging the upper mold surface 72 in the lower mold surface 62, a space capable of forming the nonwoven fabric exterior structure 30p is formed between the upper mold surface 72 and the lower mold surface 62. The lower mold 60 and the upper mold 70 are provided with a heating mechanism (not shown) such as a heater.

  Hereinafter, a method of manufacturing the nonwoven fabric exterior structure 30p from the copper plated nonwoven fabric 3p obtained by the process shown in FIG. 1 using the above-described hot press mold 50 will be specifically described.

  First, a part of the wire bundle 12 is placed in the lower mold surface 62 of the lower mold 60 in a state where the part is wound with the copper plated non-woven fabric 3p.

  Specifically, as shown in FIG. 4, the copper-plated non-woven fabric 3p is wound around the wire bundle 12 (consisting of a plurality of wires 11) so as to be along the longitudinal direction of the wire bundle 12. Then, it is arranged in the lower mold surface 62.

  Thereafter, the upper mold surface 72 of the upper mold 70 is inserted into the lower mold surface 62. In this state, the copper-plated non-woven fabric 3p is heat-molded (hot-pressed) in the hot-press mold 50. That is, the copper plated non-woven fabric 3p is heated in a state where the copper plated non-woven fabric 3p is pressed between the lower mold surface 62 and the upper mold surface 72.

  Thereafter, when the copper plated non-woven fabric 3p is cooled, the surface of the copper plated non-woven fabric 3p is cured in a shape corresponding to the shapes of the lower die surface 62 and the upper die surface 72. Moreover, the overlapping part of the copper plating processed nonwoven fabric 3p will be in the state joined mutually. Thus, the nonwoven fabric exterior structure 30p is formed in a state of covering the wire bundle 12, and the wire harness 1 shown in FIG. 2 is completed.

  Thus, in the 1st mode, wire harness 1 which has nonwoven fabric exterior structure 30p can be obtained by using one sheet-like copper plating processed nonwoven fabric 3p.

(Second aspect)
FIG. 5 is an explanatory diagram showing a second aspect of the process of manufacturing the nonwoven fabric exterior structure 30 using the copper plated nonwoven fabric 3p. Hereinafter, with reference to FIG. 5, the process content of a 2nd aspect is demonstrated.

  As shown in FIG. 5, in the second mode, two plate-like members corresponding to the copper-plated non-woven fabric 3p including the copper-plated upper non-woven fabric 31p and the copper-plated upper non-woven fabric 32p are used.

  That is, the upper nonwoven fabric material 31 and the lower nonwoven fabric material 32 before being subjected to copper plating are subjected to copper plating treatment, and two copper plated processed upper nonwoven fabrics 31p corresponding to the copper plated processed nonwoven fabric 3p and the upper portion subjected to the copper plating processing A non-woven fabric 32p is obtained (see FIG. 1).

  And as shown in FIG. 5, it arrange | positions so that the electric wire bundle 12 which consists of several electric wires 11 may be pinched | interposed by the copper-plated processed upper nonwoven fabric 31p and the copper plated processed upper nonwoven fabric 32p, and it is the same as that of a 1st aspect. Using a hot pressing mold or the like, the nonwoven fabric exterior shown in FIG. 2 is formed by heat molding so that the copper-plated processed upper nonwoven fabric 31p and the copper-plated processed upper nonwoven fabric 32p are in close contact with each other. The wire harness 1 having the structure 30p can be completed. In addition, since the shape of the nonwoven fabric exterior structure 30p is determined by the inner surface shape of the molding die, it does not necessarily have a cylindrical shape like the nonwoven fabric exterior structure 30p shown in FIG.

  In the 2nd mode, wire harness 1 can be obtained by carrying out heat molding in the state where electric wire bundle 12 was inserted between two plate-like copper-plated upper nonwoven fabric 31p and copper-plated upper nonwoven fabric 32p. Therefore, the nonwoven fabric exterior structure 30p can be obtained relatively easily because the winding process of the wire bundle 12 by the copper plated non-woven fabric 3p is not required before the heat molding as in the first aspect.

<Embodiment 2: Manufacturing method of wire harness exterior body>
FIG. 6 is an explanatory view showing a wire harness exterior body manufactured by the manufacturing method according to Embodiment 2 of the present invention. As shown in the figure, the wire harness exterior body 2 can also be manufactured using the copper plated non-woven fabric 3p.

  As shown in FIG. 6, the wire harness exterior body 2 is comprised by the nonwoven fabric exterior structure 30c which has the hollow area | region 2c which can protect the outer periphery of at least one part of an electric wire bundle. Hereinafter, with reference to FIG. 6, the manufacturing method of the wire harness exterior body 2 which is Embodiment 2 is demonstrated.

  First, as shown in FIG. 1, as in the first embodiment, in the first step, the nonwoven fabric 3 is subjected to copper metal plating to obtain a plated nonwoven fabric material 3p.

  Thereafter, as a second step, the wire harness exterior body 2 having a hollow region 2c capable of protecting at least a part of the outer circumference of the wire bundle by thermoforming the copper-plated nonwoven fabric 3p as shown in FIG. A non-woven fabric exterior structure 30c) is obtained.

  Hereinafter, the second step will be described in detail. In the second step, for example, a core material such as a dummy wire or a pipe is used instead of the wire bundle 12, and the same processing as in the first and second modes is performed (the wire bundle shown in FIGS. 3 to 5). 12 is replaced with the core material), and after obtaining an intermediate structure corresponding to the nonwoven fabric exterior structure 30p with the core material, the core material is removed from the intermediate structure, whereby the wire harness exterior body 2 having the hollow region 2c is obtained. The (nonwoven fabric exterior structure 30c) can be completed.

  Thus, the manufacturing method of the wire harness exterior body of Embodiment 2 has obtained the wire harness exterior body 2 (nonwoven fabric exterior structure 30c) by performing a thermoforming process with respect to the copper plating processed nonwoven fabric 3p. For this reason, the wire harness exterior body 2 which can shield an electric wire bundle can be obtained comparatively cheaply at the time of accommodation of the electric wire bundle in the hollow area | region 2c, without using a shielding material separately.

<Others>
Although the example which obtains the copper plating processed nonwoven fabric 3p by the copper plating process was shown in embodiment mentioned above, it is applicable not only to copper plating but general metal plating, and it applies to the copper plated processed nonwoven fabric 3p (31p, 32p). Alternatively, a metal plated non-woven fabric may be obtained. However, the copper plating process has an advantage that it can be performed at a lower cost than other metal plating processes.

  Moreover, if the copper plating process with respect to the plate-shaped copper plated non-woven fabric 3p is not performed on both sides, the shield function can be exhibited as long as it is performed only on one side.

  However, in the first case in which the drain wire for ground wiring is arranged together with the wire bundle 12 in the nonwoven fabric exterior structure 30p, the wire bundle 12 (including the drain wire) is provided so as to be electrically connected to the drain wire. It is desirable that the contact surface side with the copper plating treatment surface.

  For example, in the case of the first mode shown in FIG. 3 and FIG. 4, it is desirable to wind the wire bundle 12 with the copper plating surface inside, and in the case of the second mode shown in FIG. It is desirable that the lower surface of the finished upper non-woven fabric 31p be a copper-plated surface and the upper surface of the upper non-woven fabric 32p be a copper-plated surface.

  Conversely, in the second case in which the ground wiring is performed from the outer peripheral surface of the nonwoven fabric exterior structure 30p, it is desirable that the outer peripheral surface side be a copper plating surface.

  For example, in the case of the first mode shown in FIGS. 3 and 4, it is desirable to wind the wire bundle 12 with the copper plating surface facing outward. In the case of the second mode shown in FIG. It is desirable that the upper surface of the finished upper nonwoven fabric 31p be a copper-plated surface, and the lower surface of the copper-plated upper nonwoven fabric 32p be a copper-plated surface.

  Moreover, when the copper plating process with respect to the plate-shaped copper plating processed nonwoven fabric 3p is performed on both surfaces, it can respond to any of the said 1st and 2nd case.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

DESCRIPTION OF SYMBOLS 1 Wire harness 2 Wire harness exterior body 3 Nonwoven fabric 3p Copper plated non-woven fabric 11 Electric wire 12 Wire bundle 30c Nonwoven fabric exterior structure 30p Nonwoven fabric exterior structure 31p Copper plated top nonwoven fabric 32p Copper plated bottom nonwoven fabric

Claims (6)

(a) applying a metal plating treatment to the nonwoven fabric to obtain a plated nonwoven fabric;
(b) heat-molding the plated nonwoven fabric together with the wire bundle to obtain a nonwoven fabric exterior structure covering at least a part of the outer periphery of the wire bundle;
A method of manufacturing a wire harness comprising: It is a manufacturing method of the wire harness of Claim 1, Comprising:
The plated nonwoven fabric includes a sheet of nonwoven fabric,
The step (b) is characterized in that the wire bundle is heat-molded in a state wound with the nonwoven fabric,
Manufacturing method of wire harness. It is a manufacturing method of the wire harness of Claim 1, Comprising:
The plated non-woven fabric includes first and second non-woven fabrics each having a plate shape,
Step (b)
The wire bundle is heat-molded in a state sandwiched between plate-like first and second nonwoven fabrics,
Manufacturing method of wire harness. (a) applying a metal plating treatment to the nonwoven fabric to obtain a plated nonwoven fabric;
(b) heat-molding the plated nonwoven fabric to obtain a wire harness exterior body having a hollow region capable of protecting at least a part of the outer periphery of the wire bundle;
The manufacturing method of a wire harness exterior body provided with this. A bundle of wires,
A non-woven fabric exterior structure covering the outer periphery of at least a part of the wire bundle,
The nonwoven fabric exterior structure is formed by heat-molding a plated nonwoven fabric,
Wire Harness. A non-woven fabric exterior structure having a hollow region capable of protecting the outer periphery of at least a part of the wire bundle,
The nonwoven fabric exterior structure is formed by heat-molding a plated nonwoven fabric,
Wire harness exterior body.

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