JP4767137B2 - Seal wire waterproofing method and structure - Google Patents

Description

  The present invention relates to a method and a structure for waterproofing a shielded wire, and in particular, in a shielded wire that is wired in a waterproof region such as an engine room of a vehicle, the watertight structure of a drain wire drawn from the end of the shielded wire is slimmed down. To do.

Among electric wires routed in automobiles, shielded electric wires are used particularly in places where shielding against noise is required. As this shielded electric wire 1, for example, as shown in FIG. 8 (A), an insulation covered electric wire (core electric wire) 2 that becomes a plurality of signal wires and a drain wire 3 for grounding are included, and the drain wire 3 and the covering wire are covered. A wire formed by sequentially covering the electric wire 2 with a shield layer 4 and a sheath 5 made of an insulating resin material is used (Patent Document 1).
The drain wire 3 is made of a large number of conductive strands and is not covered with an insulating coating, and is in contact with the shield layer 4 made of a metal braided tube or metal foil.

  In order to attach such a shielded electric wire 1 to the connector housing, the terminal processing of the shielded electric wire 1 is required as shown in FIG. That is, the sheath 5 and the shield layer 4 are peeled over about 80 to 200 mm, the exposed end of the covered electric wire 2 is further peeled, the terminal 7 is crimped, and the terminal 8 is similarly crimped to the drain wire 3. Then, the terminals 7 and 8 are inserted into the connector housing to enable mechanical connection with the counterpart device.

  When connecting a terminal to an electric wire terminal wired in a waterproof region such as an engine room of a vehicle and connecting the terminal to a connector, for example, in Japanese Patent Laid-Open No. 2001-167821 (Patent Document 2), an exposed portion of a core wire A water-stop method is disclosed in which molding is performed with a high-viscosity sealing resin so as to cover a terminal connection portion including the above.

  When connecting the shielded wire to equipment in the engine room in the waterproof area, drain wires that are not covered with insulation are also drawn from the end of the shielded wire, so that water enters the equipment through the drain wire. It becomes. Therefore, as shown in FIG. 9, the insulated wire 9 is spliced to the end of the drain wire 3, spliced to the core wire 9 a of the insulated wire 9, and a tape coated with silicon is wound around the splice portion. .

However, the outer diameter of the water stop splice is increased by silicon or the like, leading to enlargement of the harness outer diameter. The water stopping method disclosed in Patent Document 1 has the same problem. In particular, due to the recent electrification of automobiles and the like, the number of shielded wires is expected to increase, and countermeasures against the enlargement of the water stop splice part of the drain line are becoming increasingly important.
Further, since the insulated coated electric wire 9 is spliced to the drain wire 3 and the shielded wire is connected to the equipment (for example, ECU), there is a problem in that the processing cost is increased and the cost is increased.
Furthermore, the stripping length of the shielded electric wire is a length necessary for the splicing process (150 mm or more), and there is a problem that the shielding performance is lowered due to an increase in the stripping length.

JP 2002-208321 A Japanese Patent Laid-Open No. 2001-167821

  The present invention has been made in view of the above problems, and it is an object to provide a water stop method and a water stop structure that can reduce the water stop treatment location, reduce the cost of the water stop treatment, and have high shielding performance. Yes.

In order to solve the above problems, the present invention draws a drain wire and a core wire from the peeled end of the shield wire tip to the outside,
A non-waterproof heat-shrinkable tube is put on the drain wire drawn to the outside to form a pseudo-covered electric wire, and through the hot melt tube from the drain wire or / and the core electric wire converted to the pseudo-covered electric wire, Move to the position where the drain wire and / or core wire is covered,
Further, a waterproof heat-shrinkable tube having a water-stopping agent applied to the inner peripheral surface is passed from the tip end side of the non-waterproof heat-shrinkable tube to cover the outer peripheral position of the hot melt tube and the outer peripheral position of the shield wire. Move to the position where
Thereafter, heat treatment is performed to heat-shrink the non-waterproof heat-shrinkable tube and the waterproof heat-shrinkable tube, and the water-stopping agent of the hotmelt tube and the waterproof heat-shrinkable tube is melted. The non-waterproof heat-shrinkable tube that covers the drain wire and the non-waterproof heat-shrinkable tube that covers the drain wire and the outer peripheral surface of the core wire are filled with the water-stopping agent, and the non-waterproof material that covers the drain wire. While filling the gap surrounded by the heat-shrinkable tube and the core electric wire with hot melt, on the rear end side than the peeled end, the gap between the inner peripheral surface of the waterproof heat-shrinkable tube and the outer peripheral surface of the shielded wire is Filled with water-stopper ,
It provides a method for stopping water shield wire, wherein that you each crimp connecting terminal to terminal of the terminal and the core wire of the drain wire drawn from skinning end of the shielded wire tip.
The hot melt tube is a shrinkable tube formed of a hot-melt adhesive, and has a cylindrical shape at a low temperature (normal temperature), but melts when heated.

According to the waterproofing method of the shielded wire of the present invention, since the drain wire itself is insulated and coated with the heat shrinkable tube, the drain wire itself can be effectively prevented, and the non-waterproof coating on the drain wire is possible. A waterproof heat-shrinkable tube is covered between the heat-shrinkable tube and the peeled end, and the melted and solidified hotmelt tube prevents water from entering the front and rear ends of the waterproof heat-shrinkable tube with a waterproofing agent. it can. Thereby, it is possible to prevent water from entering the drain wire from the end of the non-waterproof heat-shrinkable tube covered with the drain wire on the peeled end side. Thus, in the present invention, the hot melt tube and the waterproof heat-shrinkable tube are covered with the required wires of the shield wire, and the water-stopping agent of the hot-melt tube and the waterproof heat-shrinkable tube is melted and filled between the wires. For this reason, it is not necessary to drop the hot melt or water-stopping agent at a required location, and the filling operation of the hot melt or water-stopping agent can be facilitated.
Further, if a drain line is exposed by providing a gap between the peeled end side end of the non-waterproof heat-shrinkable tube covered with a drain line and the peeled end, the drain line element is removed from the gap. The melted hot melt is filled also between the lines, and a more reliable water stop treatment can be performed.
In addition, hot melt or a water-stop agent is filled between the wires covered with the waterproof heat-shrinkable tube, but the increase in the outer diameter of the water-stop portion is very small. Compared to the water-stopping method in which the resin is molded with resin, the water-stopping location can be greatly reduced.

The outer diameter of the waterproof heat-shrinkable tube is larger than the outer diameter of the non-waterproof heat-shrinkable tube that does not have a water-stopper on the inner peripheral surface, but it covers only the short section continuously from the peeled end side of the shield wire. And since it is made to continue with the non-waterproof heat-shrinkable tube with a small outer diameter, the enlargement of the drain wire by having coat | covered these heat-shrinkable tubes can be suppressed, and slimming can be achieved.
Further, by covering the drain wire with a heat-shrinkable tube to form a pseudo-covered electric wire, the conventional splice connection between the general electric wire and the drain wire becomes unnecessary. Thereby, member costs, such as an electric wire and a terminal, and processing cost can be reduced. Furthermore, since no splice connection is required, the length of the shield wire can be machined to the shortest 40 mm, and the shield performance can be improved by shortening the skinned section.
Furthermore, when the waterproof heat-shrinkable tube is made transparent, the filling state of the water-stopping agent provided on the inner peripheral surface of the waterproof heat-shrinkable tube can be visually observed from the outside.

In addition, the present invention provides a water stop structure for a shielded wire manufactured by the above method, wherein the drain wire and the core electric wire are drawn out to the outside with a length of 40 mm to 150 mm from the peeled end of the shield wire tip. ing.

Furthermore, the present invention is drawn from the skinning end of the shielded wire tip Rutotomoni, a drain wire and a core wire terminals to the pulled-out terminals are connected by crimping,
A non-waterproof heat-shrinkable tube that is covered with the drawn drain wire to form a pseudo-coated electric wire;
Wherein the non-waterproof heat shrinkable waterproof heat shrinkable tube covering from the tube toward the skin stripping end side outer periphery of the shield wire,
A hot melt filled and solidified in a gap between the non-waterproof heat-shrinkable tube coated on the drain wire and the core wire;
Filling between the inner peripheral surface of the waterproof heat-shrinkable tube and the non-waterproof heat-shrinkable tube covered with the drain wire and the outer peripheral surface of the core wire, and between the inner peripheral surface of the waterproof heat-shrinkable tube and the outer peripheral surface of the shield wire A waterproofing agent applied to the inner peripheral surface of the waterproof heat-shrinkable tube,
The water stop structure of the shield wire characterized by comprising.

A water stop rubber plug is attached to the end of the drain wire, and the terminal is crimped.
Thus, if a rubber stopper is attached to the terminal connection side of the non-waterproof heat shrinkable tube, it is possible to completely prevent water from entering the terminal connection side end surface of the non-waterproof heat shrinkable tube. Therefore, the drain wire drawn out from the end of the shield wire and having the terminal crimped and connected to the tip thereof can completely stop water from the end of the shield wire to the terminal connection portion.
In addition, since the drain wire is covered with a non-waterproof heat shrink tube and a waterproof heat shrink tube to create a pseudo-covered wire, it is harder to bend compared to the drain wire alone, and the drain wire end terminal is inserted into the connector. Thus, straightness can be maintained when connected to the mating terminal, and connector connection work can be facilitated.

The shield wire is wired in a waterproof region in the vehicle, and a terminal connected to the terminal of the drain wire is connected to a device arranged in the waterproof region together with a terminal connected to the terminal of the core electric wire.
For example, the terminal of the drain wire terminal is inserted and locked to the water stop connector together with the terminal connected to the terminal of the other core electric wire, and the water stop connector is fitted to the connector fitting portion of the ECU mounted in the engine room. is doing.
Thereby, it is possible to prevent water from penetrating into the device through the drain wire, and it is possible to prevent the device from occurring.

When the peeled end opposite to the peeled end of the shield wire is also disposed in the waterproof region, the drain wire is not drawn out from the peeled end on the opposite side, and only the core electric wire is drawn. It is preferably drawn out and the peeled end on the rear end side is covered with a waterproof heat shrinkable tube.
Further, instead of the structure in which the peeled end on the rear end side is covered with a waterproof heat-shrinkable tube, the shield wire is peeled off in the middle, and a grommet having a waterstop applied on the inner surface at the intermediate peeled position is provided. It is good also as a structure by which it was armored and the said water stop agent was filled between the inner surface of the said grommet, and the outer peripheral surface of a drain wire and a core electric wire.
According to the above configuration, it is possible to prevent water from flowing from the peeled end on the rear end side of the shield wire to the tip side, and even if the peeled end on the rear end side is disposed in the waterproof region, Therefore, it is possible to prevent water from entering the connector side.

As described above, according to the present invention, the drain wire is covered with a non-waterproof heat-shrinkable tube to make the drain wire a pseudo-covered wire, and the drain wire and the core wire are covered with a waterproof shrinkable tube, and hot melt is applied between the wires. Since the water-stopping agent is filled and water-stopping is performed, the water-stopping treatment portion can be slimmed to prevent the harness from being enlarged.
In addition, the hot melt filling is performed by placing the hot melt tube over a required portion of the drain wire or / and the core electric wire and melting the heat shrinkable tube when it is heated and shrunk. In addition, the hot melt filling operation can be facilitated.

  Furthermore, compared to the water-stopping process, in which the insulation-coated electric wire used in the conventional water-stopping process is spliced with a drain wire and the splice part is molded with silicon or the like, the number of parts can be reduced. Can also be reduced. In addition, the length of the sheath peeled from the end of the shielded wire does not require the length (150 mm or more) necessary for the splicing process, and can be the shortest dimension that can be crimped and connected to the terminal. A decrease in the shielding performance of the wire can be suppressed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention, where a shield wire 10 is wired in a waterproof area of an engine room of an automobile, and a terminal of the shield wire 10 is connected to a connector 30 so that the connector 30 is waterproof. It fits into a connector housing portion of an ECU (not shown) arranged in the region.
The drain wire drawn from the peeled terminal of the shield wire 10 is subjected to a water stop treatment.

As shown in FIG. 3, the shield wire 10 includes a plurality of (in this embodiment, two) signal wires 11 (hereinafter referred to as core wires 12) and drain wires 11. The drain wire 11 and the core electric wire 12 are sequentially covered with a shield layer 13 and a sheath 14 made of metal foil, and the drain wire 11 is brought into contact with the shield layer 13 to conduct.
The shield wire 10 cuts and peels off the sheath 14 and the shield layer 13 of about 40 mm from the tip, pulls out the drain wire 11 and the core wire 12, and is inserted and locked to the connector 30 at the end of each core wire 12 and the drain wire 11. The terminal 20 to be connected is crimped.

  As shown in FIG. 1A, the drain wire 11 drawn from the peeled end 10a of the shield wire 10 is connected to a non-waterproof heat-shrinkable tube 15 made of an insulating resin from the leading end side to the peeled end 10a. The one drain wire 11 and the two core electric wires 12 are both passed through a waterproof heat-shrinkable tube 17 made of an insulating resin, and the waterproof heat-shrinkable tube 17 forms a non-waterproof heat-shrinkable tube 15. Covering is performed so as to straddle the rear end 15b of the peeled end 10a side and the peeled end 10a. A heat-meltable water-stopping agent 18 (hereinafter referred to as “water-stopper 18”) applied in advance to the inner peripheral surface of the waterproof heat-shrinkable tube 17 is melted at the time of heat-shrinking, and the tip of the waterproof heat-shrinkable tube 17 is obtained. On the 17a side, a water-stopping agent 18 is filled between the non-waterproof heat-shrinkable tube 15 covered with the drain wire 11, the outer peripheral surface of the core wire 12, and the inner peripheral surface of the waterproof heat-shrinkable tube 17, and the rear end side 17b Then, a water-stopping agent 18 is filled between the outer peripheral surface of the sheath 14 of the shielded wire 10 and the inner peripheral surface of the waterproof heat-shrinkable tube 17 for water-stopping treatment.

Further, on the distal end side 17a of the waterproof heat-shrinkable tube 17, a hot melt tube 19 (described later) further covered on the non-waterproof heat-shrinkable tube 15 covered on the drain wire 11 is melted during the heat shrinkage, as shown in FIG. 1 (B). In addition, the melted hot melt 19 ′ is filled between the non-waterproof heat-shrinkable tube 15 in which the drain wire 11 is covered and the core electric wire 12 to stop the water.
In this way, both the front and rear ends of the waterproof heat-shrinkable tube 17 are completely water-stopped.
A rubber plug 21 is attached to the boundary between the tip 15a of the non-waterproof heat shrinkable tube 15 and the crimping portion of the terminal 20. The rubber plug 21 is also attached to the boundary portion between the other core wire 12 and the terminal 20.

On the other hand, as shown in FIG. 2, the sheath 14 and the shield layer 13 are also cut off and peeled off from the rear end side of the shield wire 10, and the drain wire 11 is not pulled out from the peeled end 10b side. Only the electric wire 12 is pulled out, and the end of the core electric wire 12 is connected to the connector 31. Further, the peel-off end 10b is covered with a waterproof heat-shrinkable tube 16 and is heat-shrinked to be in close contact, and the peel-off end 10b is waterproofed.
In the present embodiment, since there are two core electric wires 12 drawn from the peeled end 10b on the rear end side of the shielded wire 10, a waterproof process in which the peeled end 10b is covered with the waterproof heat-shrinkable tube 16 is sufficient. However, when there are three or more core electric wires 12, it is difficult to fill the gap between the core electric wires 12 with the waterproofing agent of the waterproof heat-shrinkable tube 16, so that the required core electric wires 12 are covered with a hot melt tube, A melted hot melt may be filled in a gap surrounded by the core electric wires 12.

Next, a water stopping method for the drain wire 11 having the water stopping structure will be described.
First, as described above, the shield wire 10 made of the sheath 14 and the metal foil is cut to the required dimensions, and the so-called skinning is performed, as shown in FIG. 4A. The core electric wire 12 and the drain wire 11 are pulled out from the outside.

Next, as shown in FIG. 4B, a non-waterproof heat-shrinkable tube 15 is covered from the leading end side of the drawn drain wire 11 to the skinned end 10a on the rear end side.
Next, as shown in FIG. 4C, the hot melt tube 19 is further covered from the front end side to the drain wire 11 covered with the non-waterproof heat shrinkable tube 15, and the rear end 19a and the peeled end of the hot melt tube 19 are covered. 10a is aligned.
Next, as shown in FIG. 4D, one drain wire 11 and two core wires 12 are put together and passed through one waterproof heat-shrinkable tube 17 from the tip side, and the waterproof heat-shrinkable tube 17 is not waterproofed. The heat shrinkable tube 15 is covered so as to straddle the rear end 15b and the peeled end 10a.
After covering these three non-waterproof heat-shrinkable tubes 15, hot melt tube 19, and waterproof heat-shrinkable tube 17 on the shield wire 10, the non-waterproof heat-shrinkable tube 15 and the waterproof heat-shrinkable tube 17 are heat-shrinked, and each wire is required. The region is tightly covered with the non-waterproof heat shrinkable tube 15 and the waterproof heat shrinkable tube 17.
At this time, on the distal end 17 a side of the waterproof heat-shrinkable tube, a stop is provided between the inner peripheral surface of the waterproof heat-shrinkable tube 17, the outer peripheral surface of the non-waterproof heat-shrinkable tube 15 that covers the drain wire 11, and the outer peripheral surface of the core electric wire 12. While the liquid medicine 18 and the hot melt tube 19 are melted, the hot melt 19 ′ is filled. On the rear end 17 b side, the water stopping agent 18 is provided between the inner peripheral surface of the waterproof heat shrinkable tube 17 and the outer peripheral surface of the sheath 14. The water can be prevented from entering from the front and rear ends of the waterproof heat-shrinkable tube 17.

Further, on the rear end side of the shielded wire 10, the two core electric wires 12 are put together and passed through one waterproof heat-shrinkable tube 16, and the waterproof heat-shrinkable tube 16 is covered so as to straddle the peeled end 10b, and heat shrinkage is performed. Let
At this time, the waterproof heat-shrinkable tube 16 is provided on the inner peripheral surface of the waterproof heat-shrinkable tube 16 between the inner peripheral surface of the waterproof heat-shrinkable tube 16 and the outer peripheral surface of the sheath 14 on the distal end side (left side in FIG. 2). On the other hand, on the rear end side (right side in FIG. 2), the water-stopping agent is filled between the inner peripheral surface of the waterproof heat-shrinkable tube 17 and the outer peripheral surface of the core electric wire 12. And the peeled end 10b is also water-stopped.

  After the water stop treatment described above, the rubber plug 21 for water stop is passed from the front end side of the drain wire 11, and the terminal 20 is crimped to the front end of the drain wire 11. In this state, the rear end side of the rubber plug 21 covers the outer peripheral surface of the non-water-proof heat-shrinkable tube 15 on the front end 15a side, and the front end side is in a position covering the barrel of the terminal 20, and from the terminal crimping portion of the drain wire 11 Inundation is also prevented.

  As shown in FIG. 2, rubber plugs 21 are attached to the front and rear ends of the two core electric wires 12, and the terminals 20 are crimped as in the case of the drain wires 11.

In this way, the peel-off end 10a of the sheath 14 is covered with the waterproof heat-shrinkable tube 17, and the waterproof heat-shrinkable tube 17 has a non-waterproof cover on the inner peripheral surface of the waterproof heat-shrinkable tube 17 and the drain wire 11 on the distal end 17a side. A non-waterproof heat-shrinkable tube 15 covered with the water-stopping agent 18 and the drain wire 11 provided on the inner peripheral surface of the waterproof heat-shrinkable tube 17 is further covered between the outer peripheral surface of the shrinkable tube 15 and the outer peripheral surface of the core wire 12. The hot melt tube 19 is filled with the melted hot melt 19 ′ and water-stopped, and at the rear end 17 b side of the waterproof heat shrinkable tube 17, the inner peripheral surface of the waterproof heat shrinkable tube 17 and the outer periphery of the sheath 14 are provided. A water-stopping treatment is performed by filling a water-stopping agent 18 between the surfaces.
Therefore, water can be stopped at both the front and rear ends of the waterproof heat-shrinkable tube 17 placed on the skinned end 10a, so that the drain wire 11 is prevented from being flooded between the rear end 15b of the non-waterproof heat-shrinkable tube 15 and the skinned end 10a. can do.
On the other hand, on the tip 15a side of the non-waterproof heat-shrinkable tube 15, the boundary portion with the terminal 20 is covered with the rubber plug 21, so that water from the tip side can be prevented.
Further, the drain wire 11 is not drawn out from the peeled end 10b on the other end side of the shield wire 10, and the waterproof end of the peeled wire 10 is covered with the waterproof heat-shrinkable tube 16, so that the other end of the drain wire 11 is removed. Inundation from the side can also be prevented.

  Further, by covering the drain wire 11 with the non-waterproof heat-shrinkable tube 15 and the waterproof heat-shrinkable tube 17 to make a pseudo electric wire, the splice connection between the drain wire 11 and the insulation-coated electric wire becomes unnecessary. Therefore, the material cost and the processing cost can be reduced, and the sheath skinning length of the shield wire 10 can be set to 40 mm necessary for terminal crimping, and the shield performance of the shield wire 10 is lowered by shortening the skinning length. Can be greatly suppressed.

Further, the filling of the hot melt 19 ′ is performed by covering the drain wire 11 with the hot melt tube 19 and melting the non-waterproof heat shrinkable tube 15 and the waterproof heat shrinkable tube 17 by heating. Is not required to be dripped at a required location, and the hot melt filling operation can be facilitated.
In this embodiment, the hot melt tube 19 is covered with the drain wire 11, but may be covered with the core electric wire 12. In addition, when there are three or more core electric wires 12, both the drain wire 11 and the core electric wire 12, or a plurality of core electric wires 12 are covered with a hot melt tube 19, and the drain wire 11 and the core electric wire 12 are interposed. The molten hot melt 19 'is filled.
The shield layer 13 of the shield wire 10 may be formed of a metal braided tube instead of the metal foil.

FIG. 6 shows a second embodiment of the present invention.
In the present embodiment, a gap is provided between the rear end 15 b of the non-waterproof heat shrinkable tube 15 and the peeled end 10 a, and the hot melt 19 ′ melted by the hot melt tube 19 is removed from the gap of the drain wire 11. The line is filled and water is stopped between the lines.

According to the above-described configuration, the waterproof heat-shrinkable tube 17 can be prevented from being flooded at both the front and rear ends, and the drain wire 11 itself can also be prevented from flooding.
Moreover, since the line water is stopped between the strands of the drain wire 11, the water stop structure provided at the peeled end on the rear end side of the shield wire 10 as in the first embodiment becomes unnecessary.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 7 shows a third embodiment of the present invention.
In this embodiment, the sheath 14 and the shield layer 13 on the other end side of the shield wire 10 are peeled off intermediately, and a grommet 22 is attached to the intermediate peeling position, and the water stop agent 23 is filled in the grommet 22. ing. The water-stopping agent 23 filled in the grommet 22 penetrates into the shield wire 10 from the intermediate peeling position, and as shown in FIG. 7B, the inner peripheral surface of the grommet 22, the drain wire 11, and the core electric wire 12. Between the outer peripheral surface and the space between the drain wires 11.

  According to the above-described configuration, the water that has been submerged from the peeled end 10 b on the rear end side of the shield wire 10 can be stopped by the water stop agent 23 of the grommet 22, and is submerged to the connector 30 side through the drain wire 11. Can be prevented.

The shield wire of embodiment of this invention is shown, (A) is a principal part expansion schematic sectional drawing of an axial direction, (B) is an AA sectional view. It is drawing which shows the whole shield line by which the drain line was water-stopped. It is a perspective view of a shield wire. (A)-(D) are drawings which show the water stop method of a drain wire. It is a BB line sectional view before carrying out heat contraction of a heat contraction tube. It is drawing which shows the shield wire of 2nd Embodiment of this invention. The 3rd Embodiment of this invention is shown, (A) is drawing which shows the whole shield wire, (B) is CC sectional view taken on the line. (A) (B) is drawing which shows a prior art example. It is drawing which shows another prior art example.

Explanation of symbols

10 Shielded wire 11 Drain wire 12 Insulated coated wire (core wire)
13 Shield Layer 14 Sheath 15 Non-Waterproof Heat Shrink Tube 16, 17 Waterproof Heat Shrink Tube 18 Water Resistant 19 Hot Melt Tube 19 'Hot Melt 20 Terminal 21 Rubber Plug 22 Grommet

Claims (6)

Pull out the drain wire and core wire from the peeled end of the shield wire to the outside,
A non-waterproof heat-shrinkable tube is put on the drain wire drawn to the outside to form a pseudo-covered electric wire, and through the hot melt tube from the drain wire or / and the core electric wire converted to the pseudo-covered electric wire, Move to the position where the drain wire and / or core wire is covered,
Further, a waterproof heat-shrinkable tube having a water-stopping agent applied to the inner peripheral surface is passed from the tip end side of the non-waterproof heat-shrinkable tube to cover the outer peripheral position of the hot melt tube and the outer peripheral position of the shield wire. Move to the position where
Thereafter, heat treatment is performed to heat-shrink the non-waterproof heat-shrinkable tube and the waterproof heat-shrinkable tube, and the water-stopping agent of the hotmelt tube and the waterproof heat-shrinkable tube is melted. The non-waterproof heat-shrinkable tube that covers the drain wire and the non-waterproof heat-shrinkable tube that covers the drain wire and the outer peripheral surface of the core wire are filled with the water-stopping agent, and the non-waterproof material that covers the drain wire. While filling the gap surrounded by the heat-shrinkable tube and the core electric wire with hot melt, on the rear end side than the peeled end, the gap between the inner peripheral surface of the waterproof heat-shrinkable tube and the outer peripheral surface of the shielded wire is Filled with water-stopper ,
Method for stopping water shield wire, wherein that you each crimp connecting terminal to terminal of the terminal and the core wire of the drain wire drawn from skinning end of the shielded wire tip. A waterproof structure for a shielded wire manufactured by the method according to claim 1, wherein the drain wire and the core electric wire are drawn to the outside with a length of 40 mm or more and 150 mm or less from a peeled end of the shield wire tip . Rutotomoni drawn from skinning end of the shielded wire tip, the drain wire and the core wire terminals to the pulled-out terminals are connected by crimping,
A non-waterproof heat-shrinkable tube that is covered with the drawn drain wire to form a pseudo-coated electric wire;
Wherein the non-waterproof heat shrinkable waterproof heat shrinkable tube covering from the tube toward the skin stripping end side outer periphery of the shield wire,
A hot melt filled and solidified in a gap between the non-waterproof heat-shrinkable tube coated on the drain wire and the core wire;
Filling between the inner peripheral surface of the waterproof heat-shrinkable tube and the non-waterproof heat-shrinkable tube covered with the drain wire and the outer peripheral surface of the core wire, and between the inner peripheral surface of the waterproof heat-shrinkable tube and the outer peripheral surface of the shield wire A waterproofing agent applied to the inner peripheral surface of the waterproof heat-shrinkable tube,
A waterproof structure for shielded wires, characterized by comprising: The drain wire is provided with a waterproof rubber plug between the terminal connected to the terminal drawn from the peeled end and the non-waterproof heat-shrinkable tube , the terminal is connected to the waterproof connector, and the waterproof The heat-shrinkable tube according to claim 2 or 3, wherein the heat-shrinkable tube is transparent .   The drain wire is not drawn out from the peeled end opposite to the peeled end of the shield wire, and only the core electric wire is drawn, and the peeled end on the rear end side is a waterproof heat shrinkable tube. The waterproof structure of the shield wire according to any one of claims 2 to 4, which is covered.   The shield wire is peeled off and a grommet having a water-stopper applied to the inner surface is sheathed at the intermediate peel position, and the water-stopper is formed between the inner surface of the grommet and the outer periphery of the drain wire and the core wire. The waterproof structure of the shield wire according to any one of claims 2 to 4, which is filled in between.