JP5161015B2 - Electrical cable structure - Google Patents

Description

The present invention relates to an electrical cable structure, and in particular, moisture and oil that have penetrated into the electrical cable reach the electrical component connected to the electrical cable through the electrical cable and lose the function of the electrical component. It is related with what was devised so that it can be surely prevented.

For example, in various motor boats, a so-called “outboard motor” is mounted, and an electrical cable is laid between the outboard motor and various devices attached thereto and a control section. An example of such a structure is shown in FIG.

FIG. 11 is a view showing a part of an electrical cable laid between the outboard motor and various devices attached thereto and the cockpit. First, there is an electrical cable 101, and an electrical component 103 is connected to the tip of the electrical cable 101. A predetermined terminal process is performed on the proximal end side of the electrical cable 101. In the figure, reference numerals 105, 107, and 109 denote terminal processing units. Among these terminal processing units 105, 107, and 109, the terminal processing units 107 and 109 are processed using so-called “giboshi terminals” and are not completely waterproof.

The conventional configuration has the following problems. That is, there has been a problem that moisture and oil enter the electrical cable 101 through the terminal processing units 107 and 109 of the electrical cable 101. In FIG. 10, the intrusion route of moisture / oil is indicated by a one-dot chain line. Moisture and oil that have entered the electrical cable 101 through the terminal processing units 107 and 109 may reach the electrical component 103 connected to the electrical cable 101 through the electrical cable 101. In such a case, the function of the electrical component 103 may be impaired by the moisture / oil that has entered and reached.

Although not directly related to the present application, for example, Patent Document 1 discloses an invention for waterproofing.
JP 11-324276 A

The present invention has been made based on such points, and the object of the present invention is to obtain a desired waterproof effect with a relatively simple configuration and to reliably maintain the soundness of the electrical component. The object is to provide an electrical cable structure.

The applicant of the present patent application has filed a patent application as a solution to such problems (Japanese Patent Application No. 2007-78921, unpublished), and the present application further improves this.

In order to achieve the above object, the electrical cable structure according to claim 1 of the present invention includes a primary-side electrical cable having a configuration in which the core wire is covered with a coated tube, and a core wire that is divided and arranged with respect to the primary-side electrical cable A secondary-side electrical cable having a structure covered with a tube, an intermediate board disposed between the primary-side electrical cable and the secondary-side electrical cable, and connecting the primary-side electrical cable and the secondary-side electrical cable; and the intermediate A hot-melt resin mold part provided so as to cover the substrate, and the covering tube at the end on the intermediate substrate side of the primary-side electrical cable is spaced and arranged so as not to be superposed on the intermediate substrate Similarly, the covering tube at the end on the intermediate board side of the secondary electrical cable is also separated so as not to overlap with the intermediate board. Even if moisture or oil enters from the primary side electrical cable side, the intermediate substrate processing unit consisting of the intermediate substrate and the hot melt resin mold part prevents it from entering the secondary side electrical cable side. It is characterized by not entering. Further, the electrical cable according to claim 2 is the electrical cable structure according to claim 1, wherein the end of the intermediate board on the primary side electrical cable side and the secondary side electrical cable side is formed in a comb-like shape and is uneven. It is the structure by which the part was provided alternately, and the land part is each installed in the front-end | tip of the said uneven | corrugated | grooved part, It is characterized by the above-mentioned. The electrical cable according to claim 3 is the electrical cable structure according to claim 2, wherein the exposed core wires of the end portions on the intermediate board side of the primary-side electrical cable and the secondary-side electrical cable are connected to the land portions. It is characterized by being soldered.

As described above, the electrical cable structure according to claim 1 of the present invention includes the primary side electrical cable having a configuration in which the core wire is covered with the coated tube, and the core wire is divided and arranged with respect to the primary side electrical cable. A secondary-side electrical cable having a configuration covered by the intermediate board, an intermediate board disposed between the primary-side electrical cable and the secondary-side electrical cable, and connecting the primary-side electrical cable and the secondary-side electrical cable; and the intermediate board A hot melt resin mold portion provided so as to cover the intermediate board, and the covering tube at the end portion on the intermediate board side of the primary side electrical cable is separated and arranged so as not to be superposed on the intermediate board. Similarly, the covering tube at the end on the intermediate board side of the secondary electrical cable is also separated and arranged so as not to overlap with the intermediate board. Even if moisture or oil enters from the primary side electrical cable side, it is blocked by the intermediate substrate processing unit consisting of the intermediate substrate and the hot melt resin mold part and enters the secondary side electrical cable side. First of all, even if moisture or oil enters the primary electrical cable from the terminal processing unit side, it is surely prevented from reaching the electrical component side. can do. This is because an intermediate substrate processing unit is provided. In other words, it is divided into the primary side electrical cable and the secondary side electrical cable across the intermediate board of the intermediate board processing part, and is covered by the hot melt resin mold part from the outside, so it enters the primary side electrical cable This is because the moisture and oil that have been removed do not enter the secondary electrical cable. Also, since the sheathing tubes of the primary side electrical cable and the secondary side electrical cable are spaced apart from each other so as not to be superposed on the intermediate substrate, places where hot melt resin does not enter, for example, the coated tube and the intermediate substrate Thus, it is possible to reliably prevent moisture and oil that have entered the primary side electrical cable from entering the secondary side electrical cable. Further, the electrical cable according to claim 2 is the electrical cable structure according to claim 1, wherein the end of the intermediate board on the primary side electrical cable side and the secondary side electrical cable side is formed in a comb-like shape and is uneven. Since the land portions are respectively installed at the tips of the concavo-convex portions, the primary side electrical cable side and the secondary side electrical cable sheathing tube are connected to the intermediate board. A non-polymerized configuration can be easily obtained without increasing the size of the intermediate substrate. The electrical cable according to claim 3 is the electrical cable structure according to claim 2, wherein the exposed core wires of the end portions on the intermediate board side of the primary-side electrical cable and the secondary-side electrical cable are connected to the land portions. Since it is soldered, the connection work is also easy.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing an electrical cable structure according to this embodiment. First, there is an electrical cable 1. An electrical component 3 is connected to the tip of the electrical cable 1. Predetermined terminal processing is performed on the base end side of the electrical cable 1. In the figure, the terminal processing units are denoted by reference numerals 5, 7, and 9. Among these terminal processing units 5, 7, 9, the terminal processing units 7, 9 are processed using so-called “giboshi terminals” and are not completely waterproof. Moreover, the said electrical cable 1 is comprised from the covering tube 2 and the core wire 4, as shown in FIGS.

An intermediate substrate processing unit 11 is provided in the middle of the electrical cable 1. Hereinafter, the configuration of the intermediate substrate processing unit 11 will be described in detail. As shown in FIGS. 2 and 3, first, the electrical cable 1 is divided with the intermediate substrate processing unit 11 in between, the primary electrical cable 3a on the side opposite to the electrical component 3 and the secondary electrical cable on the electrical component 3 side. It is a cable 1b. The primary side covered electrical cable 1 a and the secondary side covered electrical cable 1 b are connected via an intermediate substrate 13.

The intermediate substrate 13 is configured as shown in FIGS. FIG. 6 is a diagram showing a laminated structure of the intermediate substrate 13, and first there is a base material 14. A resist 16 and a surface material 18 are sequentially provided on the lower side of the substrate 14 in the figure. In addition, a pattern (copper) 15 and lands 17 are provided on the upper side of the substrate 14 in the drawing, and a resist 20 and a surface material 22 are provided at locations other than the lands 17. FIG. 7 is a plan view showing a state in which the intermediate substrate 13 is viewed from the lower side in FIG. 6, and shows a plurality of patterns 15 and lands 17. The pattern 15 and the land 17 are arranged below the surface material 18 and the resist 16. On the other hand, FIG. 8 is a plan view showing a state in which the intermediate substrate 13 is viewed from the upper side in FIG. 6, and a plurality of land portions 17 are shown. These land portions 17 are arranged so as to correspond to the pattern 15, that is, a pair of land portions 17 are installed at positions corresponding to both end positions of one pattern 15, and the pair of land portions 17 are arranged. The land portion 17 is configured to be in electrical communication with both ends of the corresponding pattern 15. Then, as shown in FIGS. 9 and 10, the core wires 4 of the primary side electrical cable 1a and the secondary side electrical cable 1b are directly soldered to the plurality of land portions 17, respectively. .

The intermediate substrate 13 will be described in more detail. The intermediate substrate 13 is formed in a comb-teeth shape, and as shown in FIG. 7, when viewed from the front side, three convex portions 13a are provided on the left side in the figure, and the space between the three convex portions 13a is provided. Two recesses 13b are formed. In addition, two convex portions 13a are provided on the right side in the figure, and three concave portions 13b are provided so as to sandwich the two convex portions 13a. In FIG. 7, since the intermediate substrate 13 is viewed from the back side, the positions of the uneven portions 13a and 13b are reversed.

Further, as shown in FIG. 8, when the positions of the land portions 17 in the respective convex portions 13a and the concave portions 13b are viewed, the respective land portions 17 are the tips of the respective convex portions 13a and the concave portions 13b (tips in the horizontal direction in FIG. 7). It is installed at a position close to.

As shown in FIG. 9, the core wires 4 of the primary-side electrical cable 1a and the secondary-side electrical cable 1b are directly soldered to the land portions 17, respectively. At that time, as shown in FIG. 9, when the positions of the covering tubes 2 of the primary side electrical cable 1a and the secondary side electrical cable 1b are viewed, the projections 13a and the recesses 13b of the intermediate board 13 On the other hand, they are separated and arranged so as not to be polymerized.

The reason for adopting such a configuration is as follows. As described above, the present patent applicant has applied for a patent prior to the present patent application (Japanese Patent Application No. 2007-78921, unpublished), and obtains a desired effect by the invention disclosed therein. I was able to. However, in the case of the configuration disclosed therein, the coated tube and the intermediate substrate are configured to be polymerized, and the hot-melt resin described later does not effectively enter the polymerization part, so that a desired sealing effect is obtained. There has been a problem of reduction. Therefore, in the present invention, as described above, the covering tube 2 of the primary side electrical cable 1a and the secondary side electrical cable 1b is not superposed on each convex portion 13a and each concave portion 13b of the intermediate substrate 13. Are spaced apart from each other. That is, by eliminating the polymerized portion, it is intended to eliminate a portion where the hot melt resin does not enter.

Then, as shown in FIGS. 2 to 5, a hot melt resin mold portion 21 is provided so as to cover the whole including the intermediate substrate 13.

As described above, according to the present embodiment, the following effects can be obtained. First, even if the terminal processing unit enters moisture or oil into the primary-side electrical cable 1a from the reference numerals 7 and 9 side, it can be reliably prevented from reaching the electrical component 3 side. . This is because the intermediate substrate processing unit 11 is provided. That is, since it is divided into the primary side coated electrical cable 1a and the secondary side coated electrical cable 1b across the intermediate substrate 13 of the intermediate substrate processing unit 11, and is covered by the hot metal resin mold unit 21 from the outside. This is because moisture and oil that have entered the primary-side covered electrical cable 1a do not enter the secondary-side covered electrical cable 1b. In addition, since the coated tube 2 of the primary side covered electrical cable 1a and the secondary side covered electrical cable 1b are separated and arranged so as not to overlap with the portions of the convex portions 13a and the concave portions 13b, The place where resin does not enter can be eliminated. Thereby, it is possible to reliably prevent moisture and oil that have entered the primary side covered electrical cable 1a from entering the secondary side covered electrical cable 1b. Further, both the left and right sides of the intermediate substrate 13 are formed in a comb-like shape, and the resist portion 17 is provided at the tip of each of the concavo-convex portions 13a and 13b, so that the primary side covered electrical cable 1a and the secondary side covered electrical device are provided. Even if the core wire 2 of the cable 1b is not exposed so long, the coated tube 2 of the primary side covered electrical cable 1a and the secondary side covered electrical cable 1b are superposed on the portions of the convex portions 13a and the concave portions 13b. It is possible to realize a configuration that does not.

The present invention is not limited to the one embodiment. For example, in the above-described embodiment, the electric cable for the motor boat has been described as an example. However, the electric cable is not limited thereto, and can be applied to an electric cable structure for various uses. In addition, the illustrated configuration is merely an example.

The present invention relates to an electrical cable structure, and in particular, moisture and oil that have entered the coated tube of the electrical cable reach the electrical component connected to the electrical cable through the electrical cable and lose the function of the electrical component. For example, it is suitable for various electric cable structures mounted on a motor boat.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one embodiment of this invention, and is a top view which shows the electrical equipment cable and the electrical component connected to this electrical equipment cable. It is a figure which shows one Embodiment of this invention, and is a top view which shows the II section of FIG. It is a figure which shows one embodiment of this invention, and is III-III sectional drawing of FIG. It is a figure which shows one embodiment of this invention, and is IV-IV arrow line view of FIG. It is a figure which shows one embodiment of this invention, and is a VV arrow line view of FIG. It is a figure which shows one embodiment of this invention, and is a side view which shows the laminated structure of an intermediate | middle board | substrate. It is a figure which shows one embodiment of this invention, and is a top view which shows the surface side of an intermediate | middle board | substrate. It is a figure which shows one embodiment of this invention, and is a top view which shows the back side of an intermediate | middle board | substrate. It is a figure which shows one embodiment of this invention, and is a top view which shows the state which connected the electrical equipment cable to the both sides of the intermediate | middle board | substrate. It is a figure which shows one embodiment of this invention, and is XX sectional drawing of FIG. It is a figure which shows a prior art example, and is a figure for demonstrating the path | route which a water | moisture content and oil infiltrate in the electrical equipment cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrical component cable 1a Primary side coated electrical cable 1b Secondary side coated electrical cable 3 Electrical component 5 Terminal processing unit 7 Terminal processing unit 9 Terminal processing unit 11 Intermediate substrate processing unit 13 Intermediate substrate 13a Convex portion 13b Concave portion 15 Pattern 17 Land portion 21 Hot melt resin mold part

Claims (3)

A primary electrical cable having a configuration in which a core wire is covered with a coated tube; a secondary electrical cable having a configuration in which the core wire is divided and arranged with respect to the primary electrical cable and the core wire is covered with a coated tube; and the primary electrical device An intermediate board disposed between the cable and the secondary side electrical cable and connecting the primary side electrical cable and the secondary side electrical cable, and a hot melt resin mold portion provided so as to cover the intermediate board. The covering tube at the end on the intermediate board side of the primary side electrical cable is spaced and arranged so as not to overlap with the intermediate board, and similarly, on the intermediate board side of the secondary side electrical cable The covering tube at the end is also separated and arranged so as not to be superposed on the intermediate substrate, and it is assumed that moisture / oil content is from the primary electrical cable side. Electric cable structure characterized in that so as not to penetrate into the secondary side electrical cable side stemmed this by intermediate substrate processing unit be input consisting of the intermediate substrate and the hot melt resin mold portion. 2. The electrical cable structure according to claim 1, wherein the intermediate substrate has an end portion on the primary electrical cable side and a secondary electrical cable side that is formed in a comb-like shape, and uneven portions are alternately provided. An electrical cable structure, wherein a land portion is provided at each end of the uneven portion. 3. The electrical cable structure according to claim 2, wherein the exposed core wire of the end on the intermediate board side of the primary side electrical cable and the secondary side electrical cable is soldered to each land portion. Electrical cable structure.

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