JP4949665B2 - Water stop treatment method for in-vehicle electric wires - Google Patents

Description

  The present invention relates to a technique for performing a water stop treatment on an in-vehicle electric wire mounted on a vehicle.

  Some of the on-vehicle electric wires are required to have high waterproof properties. For example, a grounding wire for connecting an electric circuit provided in a vehicle or the like to a grounding terminal is connected to a suitable grounding part (for example, a vehicle body) with the grounding terminal fixed to the terminal exposed to the outside. Therefore, moisture easily enters from the terminal, and if the moisture enters the circuit through the inside of the covering material, there is a possibility that normal operation of the circuit is hindered.

For this reason, it has been conventionally practiced to perform a water-stop treatment on an in-vehicle electric wire including the grounding electric wire. For example, in Patent Document 1 below, a terminal connected to one terminal of an in-vehicle electric wire By dropping a water-stopping agent having fluidity on the top and storing it, the water-stopping agent is supplied to the one terminal, and air is sucked from the other terminal, so that the water-stopping agent is used in the vehicle. A method is disclosed in which the wire is drawn into the gap between the conductor of the electric wire and the covering material.
JP 2004-355851 A

  However, in the water-stop treatment method described in Patent Document 1 in which a water-stopping agent is supplied by dropping a water-stopping agent having fluidity onto the terminal connected to the electric wire terminal and collecting the water-stopping agent, the shape of the terminal or Depending on the dripping amount of the water-stopping agent, the water-stopping agent accumulated on the terminal overflows around the terminal, and the water-stopping agent may not be stably supplied.

  In view of such circumstances, the present invention makes it possible to more reliably perform a water-stop treatment of an in-vehicle electric wire by enabling a water-stopping agent having fluidity to be supplied to a wire terminal more stably. Objective.

As a means for solving the above-mentioned problems, the present invention is an electric wire mounted on a vehicle having a coating material on the outside of a conductor, and one of the on-vehicle electric wires having a terminal connected to one end thereof. A method for water-stopping a terminal, wherein a water-stopping agent having a fluidity is dropped onto a terminal connected to the one terminal, and the water-stopping agent is applied to the one terminal by collecting the water-stopping agent. Water supply agent supplying step, and during or after the supply of the water stop agent, by sucking air inside the covering material from the other end of the in-vehicle electric wire and reducing the inside thereof, A pressure reducing step for infiltrating the inside of the covering material with a water stopping agent, and in the water stopping agent supplying step , the terminal is pressed against the upper surface of the elastic member, and the elastic member is wrapped around the lower surface and both side surfaces of the terminal. Both terminals of the terminal Forming extravasation prevention wall in close contact with the surface, using the overflow preventing wall, waterproofing agent accumulated on the terminal is characterized in the Turkey to prevent the overflowing laterally (according Item 1).

  According to this method, the water-stopping agent supplying step of dripping the water-stopping agent onto the terminal connected to one terminal of the in-vehicle electric wire prevents the water-stopping agent accumulated on the terminal from overflowing to the side. By performing the overflow prevention wall in close contact with both side surfaces of the terminal, the water stop agent can be stored while reliably preventing the water stop agent from overflowing to the side. The water-stopping agent can be supplied in a stable state. And a favorable water stop structure can be constructed | assembled reliably by drawing in the water stop agent supplied in this way inside the said coating | covering material by the suction | inhalation of the air from the other terminal.

In particular, according to the method of the present invention to so that to form the spill prevention wall by deforming the elastic member is pressed against the terminal on the upper surface of the elastic member is brought into close contact with the overflow preventing wall on both sides of the terminal Since it is easy, it can prevent reliably that a water stop agent overflows to the side of a terminal.

In this case, for example, it is also possible to form the overflow prevention wall by using a block-shaped elastic body as an elastic member and pressing the terminal against the upper surface of the block-shaped elastic body to dent the upper surface of the elastic body. However, in this case, it is necessary to use an elastic member having a certain thickness. Therefore, a sheet-like elastic body is used as the elastic member, and only the outer portions of the sheet-like elastic body are supported from below, leaving the central portion of the sheet-like elastic body, and the terminal is pressed against the central portion. it is more preferable to form the spill prevention wall by dropping a central portion (claim 2).

  In this way, while using a thin sheet-like elastic body, the overflow prevention wall can be reliably formed to effectively prevent the waterstop agent from overflowing to the side.

A terminal connected to one end of the in-vehicle electric wire has an insulation barrel that is crimped to an end of the covering material, and a conductor barrel that is crimped to a portion of the conductor exposed from the covering material. In this case, it is preferable that the water-stopping agent supplying step is a step performed by dropping the water-stopping agent in a dropping region set between the conductor barrel and the insulation barrel and collecting the same. Claim 3 ).

  In this way, if the water-stopping agent is dropped onto the dropping region set between the conductor barrel and the insulation barrel, the water-stopping agent accumulated in the dropping region overflows in the electric wire axial direction (front-rear direction). Since it can suppress by the said both barrels, a water stop agent can be supplied in the more stable state.

Here, even when the water-stopping agent is stored in the dripping region between the conductor barrel and the insulation barrel as described above, the height of the conductor barrel that is directly crimped to the conductor is the covering material that covers the conductor. Since the height of the insulation barrel to be crimped to is lower than that of the insulation barrel, there is a possibility that the water stopping agent accumulated in the dripping region overflows forward beyond the conductor barrel having the lower height. Therefore, the water-stopping agent supply step uses a mounting member mounted on the conductor barrel in order to prevent the water-stopping agent accumulated on the terminal from overflowing forward beyond the conductor barrel. ( Claim 4 ).

  If it does in this way, it can prevent more reliably that the water stop agent collected in the said dripping area | region overflows.

In addition, although the kind and arrangement | positioning location of the said vehicle-mounted electric wire are not specifically limited, The electric wire for earthing for connecting the circuit mounted in a vehicle to earth | ground is mentioned as a preferable thing ( Claim 5 ). .

  According to this configuration, since the water stop treatment can be performed on the grounding wire, the ground is generally connected to the ground disposed at a location (for example, the body of the vehicle) that is easily affected by the external environment of the vehicle. It is possible to prevent moisture from entering from the terminal of the electric wire to the terminal on the opposite side.

  However, the water stop treatment method according to the present invention is not limited to the grounding wire, and is, for example, a type in which moisture can easily enter the inside of the covering material, such as a splice wire from which the covering material in the middle of the wire is peeled Even if the connector is provided with a waterproof function, it can be suitably used for a circuit connected to a circuit that requires a particularly high waterproof property.

  As described above, according to the water stop treatment method and the water stop treatment apparatus for in-vehicle electric wires according to the present invention, a water stop agent having fluidity can be more stably supplied to the electric wire terminal. The water stop treatment can be performed more reliably.

  A preferred embodiment of the present invention will be described with reference to the drawings.

  In addition, although this embodiment demonstrates the method of carrying out a water stop process to the electric wire for earth | ground for connecting the circuit mounted in the vehicle to earth | ground, this invention is not limited to this, The various waterproofness in which high waterproofness is calculated | required It can also be applied to in-vehicle electric wires.

  The water stopping method for grounding wires according to this embodiment includes the following steps.

1) Terminal crimping process This process is a process of crimping and fixing the ground connection terminal 20 to one end of the grounding electric wire 10 as shown in FIGS.

  As the grounding wire 10, an insulated wire having a covering 14 around the conductor 12 is used. Then, the covering material 14 at one end is removed by a predetermined length to expose the conductor 12.

  A ground connection terminal 20 as shown in FIGS. 1A and 1B is fixed to the end of the ground wire 10 by pressure. The illustrated ground connection terminal 20 is composed of a single metal plate, and integrally includes a ground connection portion 21 connected to a vehicle body ground, a conductor barrel 22 and an insulation barrel 24. The ground connection portion 21 is provided with an insertion hole 21a through which a bolt (not shown) can be inserted. The ground connection portion 21 is fastened to the body of the vehicle by the bolt, thereby being electrically connected to the body ( That is, it is connected to the body ground).

  In a state where both the barrels 22 and 24 of the ground connection terminal 20 are opened, the end of the grounding wire 10 from which the covering material 14 has been removed as described above is set, and then the conductor barrel 22 and the insulation barrel 24 are set. Are closed and fixed to the exposed portion of the conductor 12 and the end portion of the covering material 14 by crimping.

2) Water-stopping agent supply step In this step, one end of the ground wire 10 (the end on the side to which the ground connection terminal 20 is connected) is set in the jig 50 shown in FIGS. And it is the process of supplying the water stop agent which has fluidity | liquidity with respect to the said one terminal in the state. 2A is a plan view showing a state in which one end of the grounding wire 10 is set on the jig 50, FIG. 2B is a side view thereof, and FIG. 2C is the same drawing (b). It is II sectional drawing.

  The water-stopping agent used here has fluidity at least at the time of supply, and it is difficult to move from the filling position when the electric wire is used, and has a flexibility that can be deformed following the bending of the electric wire. preferable. For example, it may be a liquid or gel that has a relatively high viscosity, and its properties may hardly change over time from the time of supply, or may be cured after supply. In the case of curing after supply, those that are rich in elasticity even after curing are preferable.

  Specifically, if the initial viscosity is about 0.006 to 6 Pa · s, it can be penetrated into the coating material 14 by reducing the pressure for about 5 to 120 seconds at a pressure of about 10 kPa to 100 kPa in the pressure reducing process described later. As the material, silicone resin, silicone rubber, grease, and other adhesives having viscosity and elasticity are suitable. The silicone resin can be used regardless of whether it is a two-component type (a type in which curing starts by mixing two components) or a one-component type (a type that spontaneously cures with only one component).

  Supply of such a water-stopping agent to the electric wire terminal is a dripping set between a region A indicated by shading in FIG. 2A, that is, between the conductor barrel 22 and the insulation barrel 24 of the ground connection terminal 20. This is performed by dropping a water-stopping agent into the region A using a dispenser (water-stopping agent supply device) (not shown) and storing the water-stopping agent in the dropping region A. Thereby, the water-stopping agent covers the gap between the conductor 12 and the covering material 14 over the entire circumference so that the water-stopping agent permeates the inside of the covering material 14 evenly in the decompression step described later.

  The water-stopping agent may be dropped once, but when a pressure reducing step described later is started, the water-stopping agent penetrates into the inside of the covering material 14 and stops in the dripping region A. Since the amount of the liquid medicine is gradually reduced, in this embodiment, the water-stopping agent is dropped to replenish the liquid medicine. That is, the waterstop agent is dropped in a plurality of times. Thereby, a sufficient amount of the water-stopping agent can be reliably filled in the gap between the conductor 12 and the covering material 14 while keeping the amount of the water-stopping agent remaining in the dropping region A substantially uniform.

  At this time, the jig 50 plays a role of preventing the water-stopping agent accumulated in the dropping region A from overflowing to the surroundings. Hereinafter, the jig 50 will be described in detail with reference to FIGS.

  The jig 50 is provided on the lower surface and both sides of the ground connection terminal 20 in order to prevent the water-stopping agent collected in the dripping region A from overflowing to the side of the ground connection terminal 20 (direction perpendicular to the wire axis direction). An elastic member 52 laid so as to wrap the surface, four support members 56 for supporting both ends of the elastic member 52, two wire support bases 62 for supporting one end of the ground wire 10, and grounding Positioning pins 66 for positioning the set position of the one terminal by being inserted through the insertion hole 21 a provided in the connection terminal 20 are respectively disposed on the jig base 60. Yes. The jig 50 also includes a pressing member (not shown) for pressing and fixing one end of the grounding wire 10 onto the wire support base 62.

  As shown in FIG. 2C, the elastic member 52 is composed of a sheet-like elastic body, and left and right outer portions that leave the central portion are provided at the upper end portion of the support member 56. By being inserted into the slit 56a, it is supported so as to be slidable in the left-right direction. On the other hand, since the central portion of the elastic member 52 is not supported by the support member 56, it can sink to the upper surface of the jig base 60 between the two left and right support members 56.

  Such an elastic member 52 is formed when one end of the grounding wire 10 is set on the jig 50 (the one end is positioned by the positioning pin 66 and fixed on the wire support base 62). When the ground connection terminal 20 is pressed against the upper surface of the elastic member 52, both end portions are slid and the center portion sinks, and the lower surface and both side surfaces of the ground connection terminal 20 are deformed. At this time, overflow prevention walls 52a are formed on both the left and right sides of the ground connection terminal 20 to prevent the water-stopping agent accumulated in the dripping region A from overflowing laterally. That is, the elastic member 52 is pressed at the center by the ground connection terminal 20 when the ground wire 10 is set on the jig 50, and the overflow prevention walls 52 a formed accordingly are adhered to both side surfaces of the ground connection terminal 20. By doing so, the water-stopping agent accumulated in the dropping area A is prevented from overflowing to the side. The thickness of the sheet-like elastic body constituting the elastic member 52 is slightly larger than the gap formed between the outer surface of the conductor barrel 22 (or the insulation barrel 24) and the inner surface of the support member 56. It is desirable to set it to a value. Accordingly, there is an advantage that the overflow prevention wall 52a is brought into pressure contact with the side surface of the ground connection terminal 20 and is more reliably adhered, and the water stop agent is reliably prevented from overflowing to the side.

  On the other hand, the overflow of the water-stopping agent in the front-rear direction (wire axis direction) is suppressed to some extent by the conductor barrel 22 and the insulation barrel 24 of the ground connection terminal 20. That is, since the dripping region A of the water-stopping agent is set between the conductor barrel 22 and the insulation barrel 24, the water-stopping agent overflows in the front-rear direction due to the step between the barrels 22 and 24. It is suppressed to some extent. Thus, due to the presence of the barrels 22 and 24 that suppress the overflow of the waterproofing agent in the front-rear direction and the elastic member 52 that prevents the waterproofing agent from overflowing to the side, the waterproofing agent is provided. Is effectively prevented from overflowing around the dripping region A.

  Here, even when the water stop agent is prevented from overflowing in the front-rear direction by storing the water stop agent in the dripping region A between the conductor barrel 22 and the insulation barrel 24 as described above, it is directly bonded to the conductor 12. Since the height of the conductive barrel 22 is lower than the height of the insulation barrel 24 that is crimped to the covering material 14 that covers the conductor 12, the water-stopping agent accumulated in the dripping region A has a low height. There is a risk of overflowing forward beyond the conductor barrel 22. Therefore, the jig 50 is provided with a mounting member 54 mounted on the conductor barrel 22 in order to prevent the water-stopping agent accumulated in the dropping region A from overflowing forward beyond the conductor barrel 22. In addition. Thereby, it is prevented more reliably that the water-stopping agent collected in the dripping area A overflows.

  The placement member 54 is placed on the upper surface of the conductor barrel 22 to form a front overflow prevention wall 54a (see FIG. 2B) thereon, and the front overflow prevention wall 54a causes the dropping region A to be formed. It is configured to prevent the accumulated water-stopping agent from overflowing forward beyond the conductor barrel 22. As shown in FIG. 2C, the lower surface of the mounting member 54 is formed in a shape along the upper surface of the conductor barrel 22, and can be in close contact with the upper surface of the conductor barrel 22. .

3) Depressurization step This step is performed using the decompression device 46 shown in FIG. 3 from the other end of the ground wire 10 (the end opposite to the end to which the ground connection terminal 20 is connected) to the inside of the covering material 14. This is a step of sucking air. Thereby, the water-stopping agent supplied in the water-stopping agent supply step is forcibly permeated into the inside of the covering material 14.

  In this decompression step, the water-stopping agent is accumulated in the dropping region A by the first dropping by the water-stopping agent supply step, and the water-stopping agent covers the gap between the conductor 12 and the covering material 14 in the terminal. It is made to start after making it into a state, and it is made to continue until dripping of the water stop agent after the 2nd time is complete | finished after that. In this way, the water-stopping agent can be drawn into the gap between the conductor 12 and the covering material 14 in a stable state while effectively preventing air from being caught in the water-stopping agent. In addition, when supplying the said water stop agent by one dripping, you may make it start the said pressure reduction process after the water stop agent supply process is complete | finished.

  The decompression device 46 shown in FIG. 3 is a suction device that sucks air from the wire connection device 30 to which the other terminal of the ground wire 10 is connected and the other terminal of the ground wire 10 connected to the wire connection device 30. The pump 44 and a pressure control panel 42 for controlling the suction pressure of the suction pump 44 are configured.

  Among these, the electric wire connection device 30 includes a housing 32 whose inside is sealed, and a sealed space in the housing 32 is connected to a suction port of the suction pump 44 via an appropriate pipe 40 and the pressure control panel 42. Yes.

  Moreover, the said electric wire connection apparatus 30 is comprised so that the connection of the some electric wire 10 for earthing is possible. This is because the pressure reducing process can be simultaneously performed on the plurality of grounding wires 10. That is, the other end of the plurality of grounding wires 10 is connected to a common wire connecting device 30 as shown in FIG. 3, and the wire connecting device 30 is connected to the suction port of the suction pump 44 via the pressure control panel 42. By connecting to each of the grounding wires 10, a pressure reducing step is simultaneously performed. If it does in this way, a series of processes for water stop processing can be performed simultaneously with respect to a plurality of electric wires 10 for grounding, and efficiency improvement of water stop processing can be aimed at. If this is not particularly necessary, the decompression step may be performed individually for each grounding wire 10.

  A rubber stopper holding plate 34 is provided on the front wall of the housing 32. The rubber plug holding plate 34 holds a plurality of rubber plugs 36 as shown in FIG. Each rubber plug 36 is connected to the terminal of each grounding wire 10.

  Specifically, the rubber plug holding plate 34 is provided with a plurality of rubber plug mounting holes 34a penetrating in the thickness direction, and the rubber plugs 36 are respectively fitted in the rubber plug mounting holes 34a. Yes.

  Each rubber plug 36 is formed in a cylindrical shape having a through hole 36a on its central axis, and a sealing protrusion 36b is formed on the inner peripheral surface of the through hole 36a. The sealing protrusion 36b plays a role of maintaining a sealed state in the housing 32 by being pressed against the surface of the covering material 14 of the grounding wire 10 inserted into the through hole 36a. Similarly, a sealing protrusion 36c is formed on the outer peripheral surface of the rubber plug 36, and the sealing protrusion 36c is pressed against the inner peripheral surface of the rubber plug mounting hole 34a to provide a seal.

  A rubber plug cover 38 that covers the outer peripheral portion of the rubber plug 36 from the outside is provided at the outer end of each rubber plug mounting hole 34 a. The rubber plug cover 38 is grounded in the through hole 36 a of the rubber plug 36. A taper-shaped through hole 38a for guiding the end of the electric wire 10 is provided at the center.

  In this electric wire connecting device 30, the other end of each grounding wire 10 (the side opposite to the terminal to which the ground connection terminal 20 is connected) is inserted into the through hole 36 a of the rubber plug 36 at the back through the through hole 38 a of each rubber plug cover 38. These terminals can be connected to a common sealed space in the housing 32 by press-fitting the terminal. Then, the inside space of the covering material 14 in each grounding wire 10 is also simultaneously reduced by reducing the pressure in the sealed space under the control of the pressure control panel 42 until the suction pump 44 operates to a certain negative pressure. The pressure can be reduced.

  As described above, according to the water stop processing method of the present embodiment, the gap between the conductor barrel 22 and the insulation barrel 24 of the ground connection terminal 20 connected to one end of the ground wire 10 (dropping region A). ), The elastic member 52 provided in the jig 50 is deformed to wrap around the lower surface and both side surfaces of the ground connection terminal 20 by setting the one end on the jig 50. By attaching the overflow prevention walls 52a formed accordingly to both side surfaces of the ground connection terminal 20, the water stop agent can be stored while reliably preventing the water stop agent from overflowing to the side. Therefore, the water-stopper can be supplied in a stable state at all times. And the water stop agent supplied stably in this way is drawn in to the inner side of the covering material 14 by the suction of the air from the other end of the ground wire 10, so that a good water stop structure is reliably constructed. be able to.

  In this embodiment, in addition to the elastic member 52 that prevents the water-stopping agent accumulated in the dripping region A from overflowing to the side, the water-stopping agent is placed on the conductor barrel 22 to move forward. Although the mounting member 54 that prevents overflow is also used, this mounting member 54 is omitted when the overflow of the water-stopping agent can be sufficiently suppressed only by the conductor barrel 22. May be. Conversely, by disposing a member similar to the mounting member 54 also on the insulation barrel 24 side, the overflow prevention effect on the water stop agent may be further enhanced.

  In the present embodiment, the lower surface of the mounting member 54 is formed in a shape along the upper surface of the conductor barrel 22 so that the lower surface of the mounting member 54 and the upper surface of the conductor barrel 22 are brought into close contact with each other. Even if there is a slight gap between the conductor barrel 22 and the mounting member 54, the overflow of the waterproofing agent is suppressed to some extent due to the viscosity of the waterproofing agent, so it is necessary to strictly prevent the overflow of the waterproofing agent. If not, the lower surface of the mounting member 54 may be formed as a flat surface. Even when the lower surface of the mounting member 54 is formed as a flat surface, if the mounting member 54 is formed of an elastic body, the lower surface of the mounting member 54 is in a state of being pressed against the conductor barrel 22. It is possible to deform along the upper surface of the barrel 22.

  In this embodiment, a sheet-like elastic body is used as the elastic member 52, and only the left and right outer portions are supported from below by the support member 56, leaving the central portion of the sheet-like elastic body. The overflow prevention wall 52a is formed by pressing the ground connection terminal 20 to the central portion and dropping the central portion. For example, a thick, block-like elastic body made of sponge or the like is used as the jig base 60. It is also possible to form the overflow prevention wall 52a by pressing the ground connection terminal 20 on the upper surface of the block-like elastic body and denting the upper surface of the elastic body. However, this embodiment is advantageous in that it can reliably prevent the overflow of the water-stopping agent to the side by reliably forming the overflow prevention wall 52a while using a thin elastic body. is there.

  Moreover, in this embodiment, although the water stop process was performed on the terminal on the side to which the ground connection terminal 20 is connected, the water stop process is performed on the terminal on the opposite side (for example, the terminal on the side connected to the vehicle body). Processing may be performed. Also in this case, it is possible to construct a good water stop structure at a position on the near side of the terminal. However, in this case, there is a possibility that moisture may enter the coating material 14 in the region from the ground connection portion to the water stop structure of the terminal on the opposite side, whereas the ground connection is performed as described above. If a water-stopping agent is supplied to the terminal on the side to which the terminal 20 is fixed (that is, the inlet side of moisture entering from the ground connection portion), the advantage that moisture can be prevented from entering into the inside of the covering material 14 can be almost certainly prevented. It is done.

  Moreover, in this embodiment, a water-stopping agent is dropped in the front-back direction (electric wire axial direction) by dripping a water-stopping agent between the conductor barrel 22 and the insulation barrel 24 of the earth connection terminal 20 (dropping area A). While the overflow was suppressed by the barrels 22 and 24, the water-stopping agent was stored in the dripping region A. The dripping position of the water-stopping agent should be set appropriately according to the terminal structure. Needless to say.

The water stop treatment was performed under the following conditions by the method shown in FIGS.
・ Electric wire: Thin low-voltage electric wire for automobiles (cross-sectional area: 3.0mm ² ) connected to the ground connection terminal.
・ Waterproofing agent dripping amount… 50mg
・ Pressure during decompression ... 60kPa
・ Decompression time: 60 seconds ・ Elastic member: FR sponge sheet (thickness: 2 mm)
As a result of performing the water stop treatment under the above conditions, it was confirmed that a sufficient amount of the water stop agent permeates the inside of the covering material 14 to exhibit the water stop effect.

(A) is a top view which shows the structure which crimped-fixed the ground connection terminal to one terminal of the electric wire for earth | ground concerning embodiment of this invention, (b) is the front view. It is a figure which shows the state which set the said one terminal to the jig | tool used when supplying a water stop agent to the one terminal of the said earthing | grounding wire, (a) is a top view, (b) is a side view, (C) is II sectional drawing of (b). It is a figure which shows the decompression device for decompressing the inner side of the coating | covering material in the said electric wire for earth | grounds. It is sectional drawing which shows the electric wire connection part of the electric wire connection apparatus shown by FIG.

Explanation of symbols

10 Grounding wire 12 Conductor 14 Covering material 20 Ground connection terminal (terminal)
22 Conductor barrel 24 Insulation barrel 52 Elastic member 52a Overflow prevention wall 54 Mounting member A Drip region

Claims (6)

A method for water-stopping the one end of an in-vehicle electric wire that is mounted on a vehicle having a coating on the outside of the conductor and has a terminal connected to the one end thereof,
A water-stop agent supplying step of supplying the water-stop agent to the one terminal by dropping a water-stop agent having fluidity on the terminal connected to the one terminal and collecting the water-stop agent.
During or after supplying the water-stopping agent, the air inside the covering material is sucked from the other end of the in-vehicle electric wire and the inside thereof is decompressed, so that the water-stopping agent is put inside the covering material. Including a pressure reducing step for permeation,
In the water-stopping agent supply step , the terminal is pressed against the upper surface of the elastic member, and the elastic member is deformed into a shape that wraps the lower surface and both side surfaces of the terminal, whereby an overflow prevention wall that adheres to both side surfaces of the terminal formed, with the overflow preventing wall, waterproofing processing method vehicle wire waterproofing agent accumulated on the terminal, wherein the benzalkonium be prevented from overflowing laterally. In the water stop processing method of the electric cable for vehicles according to claim 1 ,
A sheet-like elastic body is used as the elastic member, and only the outer portions of the sheet-like elastic body are supported from below, leaving the central portion of the sheet-like elastic body, and the terminal is pressed against the central portion. A water-stopping treatment method for an in-vehicle electric wire, wherein the overflow prevention wall is formed by dropping a water. In the water stop processing method of the vehicle-mounted electric wire according to claim 1 or 2 ,
As the terminal, using an insulation barrel that is crimped to an end of the covering material, and a conductor barrel that is crimped to a portion of the conductor exposed from the covering material,
The water stopping agent for a vehicle-mounted electric wire is characterized in that the water stopping agent supplying step is performed by dropping the water stopping agent into a dropping region set between the conductor barrel and the insulation barrel and collecting the same. Processing method. In the water stop processing method of the electric cable for vehicles according to claim 3 ,
The water-stop agent supplying step is performed using a mounting member mounted on the conductor barrel in order to prevent the water-stop agent accumulated on the terminal from overflowing forward beyond the conductor barrel. A water-stop treatment method for an in-vehicle electric wire. In the water stop processing method of the electric cable for vehicles according to any one of claims 1 to 4 ,
The on-vehicle electric wire is a grounding electric wire for connecting a circuit mounted on a vehicle to an earth, and a water stop treatment method for an on-vehicle electric wire. An in-vehicle electric wire that is mounted on a vehicle with a covering material outside the conductor,
A vehicle-mounted electric wire, wherein a water-stopping agent is filled inside the coating material by the water-stopping treatment method according to any one of claims 1 to 5 .

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