JP2010010753A - Connection line for on-vehicle antenna, feeder circuit for on-vehicle antenna and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water from permeating into the inside of a covering material, in a connection line for an on-vehicle antenna. <P>SOLUTION: A method for manufacturing an antenna connection line 18, including a plurality of conductors bundled and covered with a covering material 22 includes: a step of peeling the covering material 22 of a tip section 24, from the tip of the antenna connection line 18 up to a predetermined length; a step of making a solder immerse in the plurality of conductors exposed by peeling the covering material 22; a step of inserting a terminal end portion of the coating material with the plurality of conductors protruding into a heat-shrinkable tube 28, having a hot melt 26 formed on the inner wall; and a step of applying heat to the heat-shrinkable tube 28 and the hot melt 26. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted antenna connection line, a vehicle-mounted antenna power supply circuit, and a method of manufacturing the same, which are provided with a plurality of conductive wires that are bundled and covered with a covering material, and whose leading ends are not covered with a covering material. .

  Many automobiles are equipped with wireless devices such as radios, televisions, and transceivers. An antenna for a wireless device is attached to a body accessory such as a rear wing, a spoiler, and a bumper provided outside the automobile. When an antenna is attached to a rear wing configured by joining concave plates, the antenna is attached to the inner space of the rear wing surrounded by the plate. Moreover, when attaching an antenna to a plate-shaped spoiler, the antenna is attached to the plate surface. An antenna connection line is drawn from the passenger compartment to the outside of the automobile. The antenna connection line connects an antenna attached to the body accessory and a wireless device provided in the passenger compartment.

JP 2005-102367 A

  The position where the body accessory is provided is often a position that is easily exposed to wind and rain. Therefore, rainwater may adhere to the connection line of the vehicle-mounted antenna. In this case, rainwater may enter the inside of the covering material from the end of the antenna connection line. As a result, problems such as shortening the lifetime of the antenna connection line, and rainwater entering the passenger compartment through the antenna connection line and contaminating the passenger compartment arise.

  The present invention has been made for such a problem. That is, it is an object to prevent water from entering the interior of the covering material in the connecting wire of the vehicle-mounted antenna.

  The present invention relates to a vehicle-mounted antenna connection line that includes a plurality of bundled conductors and a covering material that covers a plurality of conductors while leaving a portion that is not covered in a section from the tip to a predetermined length. It is characterized by comprising solder that has penetrated into a tip section that is not covered with a covering material of a lead wire, and a tube that covers a coating material terminal portion from which the tip section of a plurality of lead wires protrudes.

  In the vehicle-mounted antenna connection line according to the present invention, it is preferable that a thermoplastic resin filled between the inner wall of the tube, the tip section, and the covering material is provided.

  In the vehicle-mounted antenna power supply circuit according to the present invention, the vehicle-mounted antenna connection line and a vehicle body accessory are provided to connect a tip section of the vehicle-mounted antenna connection line and the vehicle-mounted antenna. And a branch substrate.

  Further, the present invention provides a method for manufacturing a vehicle-mounted antenna connection line including a plurality of conductive wires that are bundled and covered with a coating material, and covers a section from a tip of the vehicle-mounted antenna connection line to a predetermined length. The step of peeling the material, the step of infiltrating the solder into the conductor section that appears by peeling the coating material, and the coating material terminal part where multiple wires protrude are inserted into the heat shrinkable tube with thermoplastic resin on the inner wall And a step of applying heat to the heat-shrinkable tube and the thermoplastic resin.

  ADVANTAGE OF THE INVENTION According to this invention, in the connection line of a vehicle-mounted antenna, the inundation to the inside of a coating | coated material can be prevented.

  FIG. 1 shows a configuration of a vehicle-mounted antenna 10 according to an embodiment of the present invention. The vehicle-mounted antenna 10 can be used as an antenna for a radio, a television, a transceiver, or the like. The antenna substrate 12 is fixed to the interior space of the rear wing, the plate surface of the spoiler, and the like. An antenna element 14 is disposed on the antenna substrate 12. Each antenna element 14 is connected to a pattern conductor (not shown) of the branch substrate 16 fixed on the antenna substrate 12 by a pattern conductor (not shown) provided on the antenna substrate 12. Further, one end of an antenna connection line 18 drawn out from the passenger compartment is connected to the pattern conductor of the branch substrate 16.

  FIG. 2A shows a cross-sectional view of a portion where the antenna connection line 18 and the branch substrate 16 are connected. The antenna connection line 18 includes a core wire 20 in which a plurality of conducting wires are bundled, and a covering material 22 that covers the core wire 20. In the tip section 24 from the tip of the antenna connection line 18 to a predetermined length, the core wire 20 is not covered with the covering material 22. In the distal end section 24, the solder penetrates between the plurality of conducting wires forming the core wire 20.

  A section extending from a predetermined position on the outer peripheral surface of the covering material 22 to the end of the covering material 22 and reaching a position in the middle of the tip section 24 is covered with a heat shrinkable tube 28 via a hot melt 26. FIG. 2B shows a cross section AB of the tip section 24 covered with the heat shrinkable tube 28 via the hot melt 26. The heat-shrinkable tube 28 is a tube that is formed of a heat-shrinkable resin such as Teflon (registered trademark) and is deformed so that the diameter is reduced by applying heat. The hot melt 26 is a thermoplastic resin that melts by heating and solidifies at room temperature. In this embodiment, a hot-melt heat-shrinkable tube is employed. The heat-shrinkable tube containing hot melt has hot melt attached to the inner wall surface, and the hot melt 26 is melted by heating and the diameter of the heat-shrinkable tube 28 is shrunk. Accordingly, the heat shrinkable tube 28 can be fixed while filling the hot melt 26 between the core wire 20 and the heat shrinkable tube 28 and between the covering material 22 and the heat shrinkable tube 28. The tip of the core wire 20 is inserted into the connection hole 32 of the branch substrate 16. The core wire 20 inserted into the connection hole 32 is brazed to the pattern conductor 30 surrounding the connection hole 32 by solder 34.

  A method for manufacturing the antenna connection line 18 will be described. FIG. 3A shows the antenna connection line 18 before processing. First, as shown in FIG. 3B, the covering material 22 of the tip section 24 is peeled off, and the melted solder is infiltrated into the portion of the core wire 20 that appears.

  Next, as shown in FIG. 3C, a section extending from a predetermined position on the outer peripheral surface of the covering material 22 to the end of the covering material 22 and reaching the middle position of the tip section 24 is divided into a heat-shrinkable heat-shrinkable tube. 36, the hot-shrink heat shrinkable tube 36 is heated. As a result, as shown in FIG. 3D, the hot melt 26 is melted and the diameter of the heat shrinkable tube 28 is shrunk, and the space between the core wire 20 and the heat shrinkable tube 28 and between the covering material 22 and the heat shrinkable tube 28 are reduced. The heat shrinkable tube 28 is fixed while filling the hot melt 26 therebetween. Thereafter, the tip of the core wire 20 is inserted into the connection hole 32 of the branch substrate 16 as shown in FIG. Then, the core wire 20 inserted into the connection hole 32 is soldered to the pattern conductor 30.

  According to such a configuration and manufacturing method, solder penetrates into the portion of the core wire 20 that appears when the covering material 22 is peeled off. Further, the coating material terminal portion from which the core wire 20 protrudes is covered with the hot melt 26 and the heat shrinkable tube 28. Thereby, when water adheres to the tip of the antenna connection wire 18, it is possible to prevent water from entering the inside of the covering material 22 from the gaps between the plurality of stranded wires. Accordingly, it is possible to solve problems such as the shortening of the life of the antenna connection line, and the rainwater entering the passenger compartment through the antenna connection line and soiling the passenger compartment. Moreover, the antenna connection line can be easily processed by employing a heat-shrinkable tube containing hot melt.

  In the above description, the configuration using the hot-melt heat-shrinkable tube has been described. In addition to such a configuration, a heat-shrinkable tube having no hot melt may be used, and a general insulating adhesive, a silicon resin, or the like may be used instead of the hot melt. In the above description, the configuration in which the antenna connection line is connected to the antenna has been described. The present invention can also be used in a configuration in which a ground wire of a wireless device, an electric device or the like is connected to a vehicle body or a ground conductor provided in the vehicle.

1 is a diagram illustrating a configuration of a vehicle-mounted antenna 10 according to an embodiment. It is sectional drawing of the part to which an antenna connection line and a branch substrate are connected. It is a figure explaining the manufacturing method of an antenna connection line.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Vehicle-mounted antenna, 12 Antenna board | substrate, 14 Antenna element, 16 Branch board | substrate, 18 Antenna connection line, 20 Core wire, 22 Coating | covering material, 24 Tip area, 26 Hot melt, 28 Heat shrinkable tube, 30 Pattern conductor, 32 Connection hole , 34 solder, 36 heat shrink tube with hot melt.

Claims (4)

A plurality of bundled wires,
A covering material that covers a plurality of conductive wires, leaving a portion that is not covered in a section from the tip to a predetermined length;
In-vehicle antenna connection lines including
Solder penetrated into the tip section not covered with the covering material of the plurality of conductive wires,
A tube covering a coating material terminal portion from which a tip section of a plurality of conductive wires projects;
A vehicle-mounted antenna connection line comprising: In the vehicle-mounted antenna connection line according to claim 1,
A vehicle-mounted antenna connection line comprising a thermoplastic resin filled between an inner wall of a tube, a tip section, and a covering material. The vehicle-mounted antenna connection line according to claim 1 or 2,
A branch board provided in the vehicle body accessory for connecting the tip section of the vehicle-mounted antenna connection line and the vehicle-mounted antenna;
A vehicle-mounted antenna feeding circuit comprising: In the method of manufacturing a vehicle-mounted antenna connection line including a plurality of conducting wires that are bundled and covered with a covering material,
Stripping the covering material in the section from the tip of the vehicle-mounted antenna connection line to a predetermined length;
Infiltrating the solder into the conductor section that appears by stripping the coating,
Inserting a coating material terminal portion from which a plurality of conductive wires protrude into a heat shrinkable tube provided with a thermoplastic resin on the inner wall; and
Applying heat to the heat shrink tube and the thermoplastic resin;
The manufacturing method characterized by including.

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