JP2018057121A - Inner component and conducting path - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner component and a conducting path, capable of preventing a resin molding from being formed in a state where an electric wire is exposed.SOLUTION: An inner component 20 which is set in a metal molding 40 to which a fluidization resin is poured, comprises: a holding part 21 holding a part arranged in the metal molding 40 of an electric wire; and a positioning part 28 positioned to the metal molding 40. According to such a construction, since the electric wiring can be positioned in the metal molding 40, the formation of the resin molding 30 can be prevented in a state in which the electric wire is exposed.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an inner part and a conductive path.

  Conventionally, a conductive path in which a part of an electric wire is covered with a resin molded body is known (for example, described in Patent Document 1 below). This conductive path is formed by arranging an electric wire in a mold for molding a resin molded body, pouring the resin into the mold, and curing the resin.

JP 2003-331663 A

  However, in the configuration as described above, when the resin molded body is molded, the electric wire is displaced by the resin poured into the mold, and the resin molded body may be molded with the electric wire exposed. It is not desirable in appearance that the electric wire is exposed from the resin molded body, and there is a possibility that moisture may enter the inside of the resin molded body from the exposed portion of the electric wire. It was.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide an inner part and a conductive path capable of preventing a resin molded body from being molded with an electric wire exposed. And

  The inner part of the present invention is an inner part that is set in a mold into which fluidized resin is poured, a holding part that holds a portion of the electric wire that is arranged in the mold, and a positioning in the mold The positioning part is provided.

  The conductive path of the present invention includes the inner part, an electric wire that is partially extended in the inner part, and a resin molded body that covers the inner part and a part of the electric wire. is there.

  According to the present invention, since the electric wire can be positioned in the mold, it is possible to prevent the resin molded body from being formed with the electric wire exposed.

The perspective view which shows the inner component in Example 1. Plan view showing inner parts Side view showing inner parts Front view showing inner parts The perspective view which shows the state before setting the inner component of the state holding a part of electric wire to a metal mold | die The perspective view which shows the state which set the inner component of the state holding a part of electric wire to the metal mold | die The top view which shows the state which set the inner part of the state which hold | maintained a part of electric wire to the metal mold | die The top view which shows the state by which the resin molding was shape | molded Sectional drawing which shows the state by which the resin molding was shape | molded, Comprising: Sectional drawing corresponded in the cross section in the AA position of FIG. Sectional drawing which shows the state by which the resin molding was shape | molded, Comprising: Sectional drawing corresponded in the cross section in the BB position of FIG. The perspective view which shows the inner component in Example 2. FIG. Plan view showing inner parts Side view showing inner parts Rear view showing inner parts The perspective view which shows the inner part of the state which hold | maintained a part of electric wire Plan view showing the inner part holding a part of the wire The perspective view which shows the inner component in Example 3. The perspective view which shows the inner part of the state which hold | maintained a part of electric wire Plan view showing the inner part holding a part of the wire Side view showing the inner part holding a part of the wire Bottom view showing the inner part with part of the wire held

Preferred embodiments of the present invention are shown below.
The inner part of the present invention may have a shape holding portion that holds the bent shape of the electric wire. According to such a configuration, since the electric wire can be defined in a predetermined bent shape in the mold, it is possible to prevent the resin molded body from being molded with the electric wire exposed even at the bent portion of the electric wire. .

  The conductive path of the present invention has a plurality of the electric wires arranged so as to run in parallel, and the plurality of electric wires have another electric wire added in the extending direction of the electric wires, and the inner part However, it is good also as a thing provided with the wall part which partitions off between the connection parts with said other said adjacent electric wire. According to such a structure, since it can prevent that connection parts contact in a some electric wire, it can prevent that an electric wire short-circuits in a resin molding.

<Example 1>
Hereinafter, a first exemplary embodiment of the present invention will be described in detail with reference to FIGS.
The conductive path 10 in the present embodiment is a composite cable in which two or more types of cables (first cable 11 and second cable 12 in the present embodiment) are combined. The conductive path 10 of this embodiment is mounted on a vehicle such as an automobile, and the first cable 11 is a cable for an electric parking brake (EPB) system, and functions as an electric parking brake mechanism. It is used as a conductive path through which an electric current is supplied. The terminal portion of the first cable 11 is electrically connected to the EPB mechanism via a connector, for example. The second cable 12 is a cable for an anti-lock brake system (ABS), and an ABS sensor (not shown) is attached to the terminal unit, for transmitting a signal detected by the ABS sensor. Used as a signal line.

  The conductive path 10 includes a main cable 15 having a plurality of electric wires (in this embodiment, a first electric wire 13 </ b> F constituting the first cable 11 and a second electric wire 13 </ b> S constituting the second cable 12), and the main cable 15. Branch cables (first branch cable 16 and second branch cable 17 in the present embodiment) branched from the cable. The first branch cable 16 extends linearly from the main cable 15, and the second branch cable 17 is bent in a substantially vertical direction with respect to the main cable 15. The second branch cable 17 is longer than the first branch cable 16. The first electric wire 13F and the second electric wire 13S are both formed by surrounding the conductor with an insulating coating.

  The main cable 15 is constituted by a multi-core cable (four-core cable in this embodiment) in which the first electric wire 13F and the second electric wire 13S are collectively embedded in a synthetic resin sheath 15S.

  The first branch cable 16 is a cable in which the first electric wires 13F extending from the sheath 15S of the main cable 15 are collectively surrounded by a protective tube 16S such as a urethane tube.

  The second branch cable 17 is a multi-core cable (two cores in this embodiment) in which a plurality of (two in this embodiment) wires constituting the second electric wires 13S are collectively embedded in a synthetic resin sheath 17S. Cable). The electric wire of the second branch cable 17 is electrically connected to the electric wire of the main cable 15 at the branch portion of the conductive path 10. The electric wires of the main cable 15 and the electric wires of the second branch cable 17 are connected by connecting the conductors exposed from the insulating coating at the terminal portions of the electric wires with solder or the like.

  The conductive path 10 includes an inner part 20 that holds a part of the extending direction of the electric wires 13F and 13S, and a resin molded body 30 that covers a part of the inner part 20 and the electric wires 13F and 13S. Hereinafter, in each component, the left-right direction in FIG. 2 will be described as the front-back direction, and the up-down direction in FIG.

  The inner part 20 is set in a mold 40 that holds a part of all the electric wires 13F and 13S constituting the conductive path 10 and into which the fluidized resin that forms the resin molding 30 is poured. It is. The inner part 20 is made of a synthetic resin and has a block shape as a whole.

  The inner part 20 includes a holding portion 21 that holds a portion of the electric wires 13F and 13S arranged in the mold 40. The holding | maintenance part 21 shall hold | maintain the electric wires 13F and 13S separately.

  The inner component 20 includes a substrate portion 22 having a substantially square plate shape, and holding portions 21 are provided on both front and back surfaces of the substrate portion 22. A pair of electric wires 13 </ b> F and 13 </ b> S are held on both the front and back surfaces of the substrate portion 22.

  The holding portion 21 includes a wall portion 23 erected at the center portion in the width direction of the substrate portion 22, a pair of side portions 24 erected at both ends in the width direction of the substrate portion 22, and a pair of side portions 24. And a facing portion 25 projecting so as to face the substrate portion 22 from the rising edge.

  The wall portion 23 and the pair of side portions 24 stand substantially perpendicular to the plate surface of the substrate portion 22, and the facing portion 25 is substantially parallel to the substrate portion 22. The wall portion 23 and the pair of side portions 24 are provided over the entire length of the substrate portion 22, and the facing portion 25 is provided over the entire length of the side portion 24.

  Arrangement portions 26 in which the electric wires 13F and 13S are individually arranged are formed on both sides of the wall portion 23 of the inner part 20. Each arrangement part 26 has a form surrounded by the wall part 23, the side part 24, and the facing part 25. Electric wires 13F and 13S are fitted and arranged in each arrangement portion 26 from an open portion 27 formed between the facing portion 25 and the wall portion 23. The part arrange | positioned at each arrangement | positioning part 26 among the electric wires 13F and 13S is hold | maintained at linear form.

  The dimensions of the wall portion 23, the side portion 24, and the facing portion 25 are larger on the other surface side (upper surface side in FIG. 4) than on one surface side (lower surface side in FIG. 4) of the substrate portion 22. Thereby, the arrangement | positioning part 26 of the other surface side of the board | substrate part 22 is enlarged compared with the arrangement | positioning part 26 of the one surface side. In addition, the 1st electric wire 13F is arrange | positioned at the arrangement | positioning part 26 on the other surface side, and the 2nd electric wire 13S is arrange | positioned at the arrangement | positioning part 26 on the one surface side.

  The inner part 20 includes positioning portions (first positioning portion 28F and second positioning portion 28S in the present embodiment) that are positioned on the mold 40. The first positioning portion 28F is provided on the side surface of the inner part 20, and the second positioning portion 28S is provided on both the upper and lower surfaces.

  As shown in FIG. 2, the first positioning portion 28 </ b> F is provided in four directions (front and rear, left and right corners) of the inner part 20 in the plan view, and in the vertical direction, as shown in FIG. 3, the inner part 20. It is located at the approximate center. As shown in FIGS. 5 and 6, the holding pin 41 of the mold 40 is in contact with the first positioning portion 28 </ b> F. The holding pin 41 of the mold 40 is provided in the lower mold and has a columnar shape protruding upward from the mold closing surface 42. The first positioning portion 28 </ b> F is a concave portion into which the holding pin 41 can be fitted, and the concave surface has an arc shape along a part of the peripheral surface of the holding pin 41 and is substantially perpendicular to the plate surface of the substrate portion 22. There is no.

  The first positioning portions 28 </ b> F are formed at both front and rear ends of a protrusion 29 that protrudes in the front-rear direction on both side surfaces of the inner part 20. The protrusion 29 is formed over substantially the entire length of the inner part 20. The first positioning portion 28F is formed in a form in which the corner of the protrusion 29 is recessed inward.

  The second positioning portions 28 </ b> S are provided on both the upper and lower surfaces of the inner part 20. A ceiling surface (not shown) and a bottom surface 43 of the cavity of the mold 40 are in contact with the second positioning portion 28S in the vertical direction (see FIG. 9). The second positioning portion 28 </ b> S is erected on the wall portion 23. The second positioning portion 28 </ b> S extends over substantially the entire length excluding the front and rear end portions of the wall portion 23. The second positioning portion 28 </ b> S has the same wall thickness dimension as the wall portion 23. The protruding end surface of the second positioning portion 28S is substantially parallel to the plate surface of the substrate portion 22.

  The resin molded body 30 covers portions of the electric wires 13F and 13S that are exposed from the outer coating (the sheaths 15S and 17S and the protective tube 16S). The resin molded body 30 is integrated with the exposed portions of the electric wires 13F and 13S, the inner part 20 holding the exposed portions of the electric wires 13F and 13S, and the end of the outer coating facing the exposed portions of the electric wires 13F and 13S by molding. Has been.

  As shown in FIG. 8, the resin molded body 30 includes a first covering portion 31 that covers a portion extending from the end portion of the main cable 15 to the end portion of the first branch cable 16, and a first cover portion that covers the end portion of the second branch cable 17. 2 covering portion 32. Almost the entire exposed portions of the electric wires 13F and 13S are surrounded by the first covering portion 31. The second covering portion 32 protrudes from the middle portion in the front-rear direction of the first covering portion 31 in a substantially right angle direction.

  The resin molded body 30 surrounds almost the entire inner part 20. A portion of the resin molded body 30 corresponding to the holding pin 41 is a recessed portion 33 (see FIG. 8), and the first positioning portion 28 </ b> F is exposed at a part of the recessed portion 33. Further, the protruding end surface of the second positioning portion 28 </ b> S is exposed on the upper surface and the lower surface of the resin molded body 30.

Next, an example of the manufacturing method of the conductive path 10 in a present Example is demonstrated.
First, a cable in which the first branch cable 16 and the second branch cable 17 are branched from the main cable 15 is manufactured. A four-core cable constituting the main cable 15 is cut to a predetermined length (a length covering the first branch cable 16), and the first electric wire 13F extending from the end of the sheath 15S is covered with a protective tube 16S. The first branch cable 16 is made, and the second branch cable 17 is made by connecting a two-core cable to the second electric wire 13S.

  Next, the inner part 20 is attached to the exposed portions of the electric wires 13F and 13S. The electric wires 13F and 13S are fitted into the arrangement portions 26 from the opening portions 27 of the inner part 20 and are held. At this time, the connection part between the main cable 15 and the second branch cable 17 is arranged in the arrangement part 26, and the space is partitioned by the wall part 23.

  Next, the exposed parts of the inner part 20 and the electric wires 13F and 13S are set in the mold 40. The first positioning portion 28F of the inner part 20 is fitted to the holding pin 41 of the mold 40, and the planar displacement of the inner part 20 is restricted. Further, the ceiling surface and the bottom surface 43 of the cavity of the mold 40 abut on the second positioning portion 28S of the inner part 20 in the vertical direction, and the positional deviation of the inner part 20 in the vertical direction is restricted.

Next, the resin molded body 30 is molded. The molten resin injected into the mold 40 flows between the inner part 20 and the electric wires 13F and 13S and fills the cavity. At this time, the electric wires 13F and 13S pressed by the flowing resin are held by the inner part 20 so that the displacement is limited. Therefore, the electric wires 13F and 13S are prevented from being displaced and coming into contact with the mold 40. Moreover, since the connection part of the main cable 15 and the 2nd branch cable 17 is partitioned off by the wall part 23, it will be prevented that a connection part contacts. Thereafter, the resin is cooled and solidified, whereby the resin molded body 30 is molded into a predetermined shape and integrated with the inner part 20, the exposed portions of the electric wires 13F and 13S and the end portions of the outer coating in close contact. .
Thus, the manufacturing operation of the conductive path 10 is completed.

Next, operations and effects of the embodiment configured as described above will be described.
The inner part 20 of this embodiment is set in a mold 40 into which fluidized resin is poured, and a holding part 21 that holds a portion of the electric wires 13F and 13S arranged in the mold 40; And a positioning part 28 positioned on the mold 40. According to this configuration, since the electric wires 13F and 13S can be positioned in the mold 40, it is possible to prevent the resin molded body 30 from being molded with the electric wires 13F and 13S exposed.

  Moreover, the holding | maintenance part 21 is provided with the wall part 23 which partitions off between the connection parts of the adjacent 2nd electric wire 13S. According to this structure, since the connection parts of the 2nd electric wire 13S can be prevented from contacting, it can prevent that the 2nd electric wire 13S short-circuits in the resin molding 30.

<Example 2>
Next, a conductive path 50 according to a second embodiment embodying the present invention will be described with reference to FIGS.
The conductive path 50 of the present embodiment is different from the first embodiment in that the inner part 51 has a shape holding portion 52 that holds the bent shape of the electric wire. In addition, the same code | symbol is attached | subjected to the structure similar to Example 1, and the overlapping description is abbreviate | omitted.

  Similarly to the first embodiment, the conductive path 50 according to the present embodiment has an inner part 51 set in the mold 40 into which the fluidized resin is poured, and a part of the inner part 51 extending in the direction is held. The electric wire 13F, 13S, and the resin molded body 30 that covers a part of the inner part 51 and the electric wires 13F, 13S are provided. As in the first embodiment, the inner part 51 includes a holding part 21 that holds a portion of the electric wires 13F and 13S that is arranged in the mold 40, and a positioning part 28 that is positioned on the mold 40, and maintains the shape. Almost the entire portion including the portion 52 is surrounded by the resin molded body 30.

  The inner part 51 has a main body part 53 having the same configuration as the inner part 20 of the first embodiment, and the shape holding part 52 protrudes laterally from the main body part 53. The shape holding portion 52 includes an extension substrate portion 54 that is provided to be flush with the substrate portion 22 of the main body portion 53, an extension wall portion 55 that is provided to be continuous with the wall portion 23 of the main body portion 53, and a main body portion. 53 and a pair of extended side portions 56 provided to be connected to the pair of side portions 24. The shape holding unit 52 is provided on one surface side (the upper surface side in FIG. 11) of the substrate unit 22. In addition, the 2nd electric wire 13S is arrange | positioned at the one surface side of the inner component 51, and the 1st electric wire 13F is arrange | positioned at the other surface side.

  The shape holding portion 52 has a shape curved in a substantially right angle along the bent shape of the second cable 12 in plan view. The shape holding part 52 includes a part extending forward from the main body part 53 (hereinafter referred to as a first extension part 57) and a part extending laterally from the front end of the first extension part 57 (hereinafter referred to as a second extension). Part 58). The extension wall portion 55 is formed only on the first extension portion 57. The pair of extension side portions 56 are continuous in a curved shape from the first extension portion 57 to the second extension portion 58.

  The inner part 51 includes a linear extension 59 that holds the first cable 11 in a straight line. The linear extension portion 59 is provided on the other surface side (the lower surface side in FIG. 11) of the substrate portion 22. The linear extension portion 59 includes a linear wall portion 61 and a pair of straight side portions 62 extending linearly in front of the wall portion 23 and the pair of side portions 24 of the main body portion 53, and the arrangement portion 26 of the substrate portion 22. Has a linearly extended form.

  As described above, in the present embodiment, as in the first embodiment, the inner part 51 is positioned by the holding portion 21 that holds the portion of the electric wires 13F and 13S that are arranged in the die 40 and the die 40. Therefore, the electric wires 13F and 13S can be prevented from being displaced in the mold 40. Moreover, since the inner part 51 has the shape holding | maintenance part 52 which hold | maintains the bending shape of the 2nd electric wire 13S, the 2nd electric wire 13S can be defined in a predetermined bending shape within a metal mold | die.

<Example 3>
Next, a conductive path 70 according to a third embodiment of the present invention will be described with reference to FIGS.
The conductive path 70 of the present embodiment is different from that of the first embodiment in the form of the positioning portion 72 of the inner part 71. In addition, the same code | symbol is attached | subjected to the structure similar to Example 1, and the overlapping description is abbreviate | omitted.

  As in the first embodiment, the conductive path 70 according to this embodiment has an inner part 71 set in the mold 40 into which the fluidized resin is poured and a part of the inner part 71 extending in the direction. Electric wire 13F, 13S, and resin molded body 30 covering a part of inner part 71 and electric wires 13F, 13S are provided. As in the first embodiment, the inner part 71 includes a holding portion 21 that holds a portion of the electric wires 13F and 13S that is arranged in the mold 40, and a positioning portion 72 that is positioned on the mold 40, and is entirely configured. Surrounded by the resin molding 30.

  The holding part 21 of the inner part 71 is formed in approximately half in the front-rear direction of the substrate part 22, and the positioning part 72 is provided in the remaining approximately half. The wall portion 23 is provided substantially over the entire length of the substrate portion 22.

  A metal positioning component 73 is embedded in the positioning portion 72. The plurality of positioning parts 73 are parts having the same shape, and have a cylindrical shape into which positioning pins (not shown) provided on the mold can be fitted.

  The plurality of positioning portions 72 are arranged in a balanced manner by appropriately shifting the positions in the width direction and the front-rear direction of the inner part 71. The positioning portions 72 are arranged on both the front and back surfaces of the inner part 71. Specifically, one positioning portion 72 is provided on one surface side (upper surface side in FIG. 17) and three on the other surface side (lower surface side in FIG. 17). . In addition, the 1st electric wire 13F is arrange | positioned at the one surface side of the inner component 71, and the 2nd electric wire 13S is arrange | positioned at the other surface side.

  A positioning portion 72 (hereinafter referred to as a first positioning portion 72F) provided on one surface side of the inner part 71 is located at an intermediate portion in the front-rear direction of the wall portion 23. The first positioning portion 72F is displaced rearward from the pair of side portions 24.

  Positioning portions 72 (hereinafter referred to as second positioning portions 72S) provided on the other surface side of the inner part 71 are provided at the center and both ends in the width direction, as shown in FIG. The second positioning portion 72S at the center in the width direction is arranged at a position shifted forward from the second positioning portions 72S at both ends. Similarly to the pair of side portions 24, the second positioning portions 72 </ b> S at both ends in the width direction have a function of holding the second electric wire 13 </ b> S between the wall portions 23.

  As described above, in the present embodiment, as in the first embodiment, the inner part 71 is positioned in the mold and the holding portion 21 that holds the portion of the electric wires 13F and 13S that is disposed in the mold. Since the portion 28 is provided, the electric wires 13F and 13S can be prevented from being displaced in the mold. Further, the inner part 71 of the present embodiment is entirely surrounded by the resin molded body 30 except for the positioning part 73.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said Example, although the case where the branch part of the electrically conductive path 10 (50) (70) is surrounded by the resin molding 30 is illustrated, it does not restrict to this but do not branch or straighten the electrically conductive path. The present invention can also be applied to a case where a bent portion is surrounded by a resin molded body.
(2) In the above-described embodiment, the case where a two-core cable is connected as the second branch cable 17 is illustrated. However, the present invention is not limited to this, and two single-core wires may be connected.
(3) In the said Example, although the number of the electric wires 13F and 13S was illustrated, the number of the electric wires can be changed suitably.
(4) In the above-described embodiment, the case where the conductive paths 10 (50) and (70) are composite cables mounted on a vehicle is illustrated. However, the present invention is not limited to this and can be applied to various cables.
(5) In the said Example, although the arrangement | positioning part 26 is provided in the front and back both surfaces of the board | substrate part 22, you may provide an arrangement | positioning part not only in this but only one side.
(6) In the said Example, although the specific structure of the arrangement | positioning part 26 is illustrated, not only this but an arrangement | positioning part can be made into arbitrary structures, if the electric wire can be hold | maintained.
(7) In the above embodiment, the conductive paths 10 (50) and (70) are branched from the main cable 15 into two branches. However, the present invention is not limited to this, and may be branched into three or more branches. .

DESCRIPTION OF SYMBOLS 10,50,70 ... Conductive path 13F, 13S ... Electric wire 20, 51, 71 ... Inner part 21 ... Holding part 23 ... Wall part 28F, 28S ... Positioning part 30 ... Resin molded object 40 ... Mold 52 ... Shape holding part

Claims (4)

It is an inner part that is set in a mold into which fluidized resin is poured.
A holding part for holding a portion of the electric wire arranged in the mold; and
An inner part comprising a positioning portion positioned on the mold.   The inner part according to claim 1, further comprising a shape holding portion that holds a bent shape of the electric wire. The inner part according to claim 1 or 2,
An electric wire in which a part of the extending direction of the inner part is held;
A conductive path comprising: a resin molded body that covers the inner part and part of the electric wire. Having a plurality of the wires arranged to run side by side,
The plurality of electric wires have other electric wires added in the extending direction of the electric wires,
The conductive path according to claim 3, wherein the inner part includes a wall portion that partitions a connection portion with the adjacent other electric wire.

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