JP2003242844A - Method of applying water-stopping agent to wire harness and water-stopping agent applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely achieve low cost and good workability in a short time while minimizing the use amount of a waterproofing agent for a wire harness composed of a large number of electric wires. Apply a waterproofing agent according to. SOLUTION: A method for applying a water-stopping agent to a wire harness and a water-stopping agent applicator according to the present invention are provided with a first nozzle 21 for sending a low-viscosity water-stopping agent 23, and a pair of nozzles provided on both sides in the delivery direction of the first nozzle. Nozzle 2 for delivering high-viscosity waterproofing agent 24
2 is provided. Then, the waterproofing agent 2 is applied to the surface of each electric wire 11.
At the time of applying 3, 24, the low-viscosity water-stopping agent 23 is sent out from the first nozzle 21 and the high-viscosity water-stopping agent 24 is sent out from the second nozzle 22 at the same time. It can be applied simultaneously with both sides of the viscosity waterproofing agent 23 adjacent to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness for applying a waterproofing agent to each wire in order to perform a water blocking treatment between the wires of a wire harness which is inserted into a grommet which is mounted in a panel through hole of an automobile. The present invention relates to a method for applying a waterproofing agent and a tool for applying a waterproofing agent.

[0002]

2. Description of the Related Art Conventionally, in a wire harness that is routed through a panel or the like for partitioning the inside and outside of a vehicle compartment, a rubber grommet is mounted in a through hole provided in the panel. By arranging the wire harness through the grommet, the grommet and the panel through hole are reliably sealed to prevent water or the like from entering the vehicle interior through the through hole of the panel.

However, if there are gaps between the grommet and the electric wires of the wire harness or between the electric wires, there is a possibility that water will penetrate through the gaps into the vehicle interior, and therefore these gaps also need to be sealed.

Therefore, a method for forming a water blocking portion of a wire harness for sealing the gap is described in Japanese Patent Laid-Open No. 1-220313. That is, as shown in FIGS. 6 and 7, the method for forming the water blocking portion of the wire harness is performed in a state in which the tip portion 51 of the waterproof sealing material injection jig 50 is inserted between the electric wires 61 of the wire harness 60. , The waterproof seal material is extruded from the waterproof seal material extrusion hole 52 provided on the peripheral wall of the tip portion 51 of the waterproof seal material injection jig 50, and each electric wire 61
It is to be filled in between.

Further, Japanese Laid-Open Patent Publication No. 10-172361 discloses a waterproofing method for a wire harness which uses a waterproofing device to perform a waterproofing process between electric wires. That is, as shown in FIGS. 8 and 9, when the electric wires are laid, the waterproofing agent 72 is applied to a required portion on the assembly line of the wire harness 80.
A waterproof processing device 70 for applying is installed.

When laying a wire group on a wire harness assembly line, the waterproofing device 70 transfers the wires 81 while aligning them in a line along a transfer path 71, as shown in FIG. 9A. , The electric wires 81 are separated one by one. Then, as shown in FIG. 9B, each electric wire 81 passes through the liquid storage groove 73 in which the water stopping agent supplied from the nozzle 72 is stored, whereby the water stopping agent is applied to the outer periphery of each electric wire 81. To be done. After that, the electric wires 81 coated with the water blocking agent fall onto the sheet 74 arranged on the receiving member 75, and are bundled into a circular cross section by the sheet 74 cut into a predetermined length.

[0007]

However, in the conventional method for forming the water blocking portion of the wire harness 60 shown in FIGS. 6 and 7, it is difficult to reliably fill the waterproof sealing material between the electric wires 61. Met. That is, to ensure the filling, it is necessary to insert the tip portion 51 of the waterproof seal material injection jig 50 between the electric wires 61 at various points in the longitudinal direction of the wire harness 60 to perform the waterproof seal material filling operation. . Therefore, there is a problem that the number of man-hours is increased and the cost is inevitably increased.

Further, in the conventional wire harness prevention / treatment device 70 shown in FIGS. 8 and 9, in the wire harness assembly line, the waterproof agent 72 can be reliably applied between the electric wires 81 of the wire harness 80. it can. However, since the entire device becomes large-scale, the equipment cost will increase significantly. Further, since the water blocking agent is applied in a state where each of the electric wires 81 is separated into individual wires, the amount of the water blocking agent used can be suppressed, but the application work takes a very long time and the cost increase can be avoided. There was a problem of not having.

The object of the present invention has been made in view of the above-mentioned problems of the prior art, and for a wire harness composed of a large number of electric wires, the amount of the waterproofing agent is suppressed to a minimum. Another object of the present invention is to provide a method of applying a waterproofing agent to a wire harness and a waterproofing agent applicator capable of easily and reliably applying the waterproofing agent at low cost in a short time.

[0010]

Means for Solving the Problems The above object of the present invention is a method for applying a waterproofing agent to a wire harness for applying a waterproofing agent between a plurality of wires of a wire harness, the method comprising: This can be solved by a method for applying a waterproofing agent to a wire harness, which is characterized in that when a waterproofing agent is applied, a low-viscosity waterproofing agent and a high-viscosity waterproofing agent are adjacently and simultaneously applied.

According to the method of applying the waterproofing agent to the wire harness having the above-described structure, the low-viscosity waterproofing agent and the high-viscosity waterproofing agent are simultaneously applied adjacent to each other. While preventing dripping and leakage of the agent and ensuring good workability,
A low-viscosity water blocking agent can be easily and surely penetrated between the electric wires to obtain a high water blocking effect. Therefore, it is possible to easily and reliably perform good water-stopping treatment in a short time at a low cost while suppressing the amount of the water-stopping agent used to the minimum.

[0012] Further, the above-mentioned problem is preferably that the low-viscosity waterproof agent is applied along the direction of the surface of each of the electrical wires before binding in a direction orthogonal to the longitudinal direction of the electrical wire, and the low-viscosity waterproof agent is also applied. It is possible to solve the problem by applying the water-stopping agent to the wire harness, which is characterized in that the high-viscosity water-stopping agent is applied along both sides of the wire in the same direction.

According to the method of applying the waterproofing agent to the wire harness having the above-mentioned structure, the low-viscosity waterproofing agent and the low-viscosity waterproofing agent are disposed adjacent to both sides of the low-viscosity waterproofing agent along the direction orthogonal to the longitudinal direction of the electric wire. Since a high-viscosity water-stopping agent is applied, the high-viscosity water-stopping agent on both sides surely prevents the low-viscosity water-stopping agent from dripping and leaking, ensuring good workability, and It can easily and surely penetrate between the electric wires.

Further, the above problem is preferably that the outer periphery of the low-viscosity waterproof agent is covered with the high-viscosity waterproof agent along the direction orthogonal to the longitudinal direction of the wires on the surface of each of the wires before binding. This can be solved by a method of applying a waterproofing agent to a wire harness, which is characterized in that the waterproofing agent is applied.

According to the method of applying the waterproofing agent to the wire harness having the above-described structure, since the waterproofing agent in which the outer periphery of the low-viscosity waterproofing agent is coated with the high-viscosity waterproofing agent is applied, the high-viscosity waterproofing agent can be applied to the low-viscosity waterproofing agent. The low-viscosity water blocking agent can be easily and reliably permeated between the electric wires while reliably preventing dripping and leakage of the viscosity water blocking agent and ensuring good workability.

Another object of the present invention is to provide a waterproofing agent applicator for a wire harness, which applies a waterproofing agent between a plurality of electric wires of the wire harness, and which delivers a low-viscosity waterproofing agent. A nozzle and a second nozzle that is disposed adjacent to both sides of the first nozzle and that delivers a high-viscosity waterproof agent. When applying the waterproof agent to each electric wire surface, the first nozzle and the This can be solved by a waterproof agent applicator for a wire harness, wherein the low-viscosity waterproof agent and the high-viscosity waterproof agent are simultaneously delivered from the second nozzle.

According to the waterproofing agent applicator for the wire harness having the above structure, the second nozzles for delivering the high-viscosity waterproofing agent are arranged adjacent to both sides of the first nozzle for delivering the low-viscosity waterproofing agent. Since the high-viscosity water-stopping agent on both sides prevents the low-viscosity water-stopping agent from dripping or leaking, ensuring good workability, the low-viscosity water-stopping agent easily and reliably penetrates between the wires. It is possible to obtain a high water blocking effect. Therefore, it is possible to easily and reliably perform good water-stopping treatment in a short time at a low cost while suppressing the amount of the water-stopping agent used to the minimum.

Another object of the present invention is to provide a waterproofing agent applicator for a wire harness, which applies a waterproofing agent between a plurality of electric wires of the wiring harness, and which has an inner nozzle at the tip and has a low viscosity stopping agent. An inner tube that stores the liquid agent, and an outer tube that is arranged so as to cover the outer circumference of the inner tube and has an outer nozzle having a larger diameter than the inner nozzle at the tip, and is composed of an outer tube that stores the highly viscous waterstop, By applying pressure from the outside of the outer tube, the low-viscosity waterproof agent and the high-viscosity waterproof agent are simultaneously delivered from the inner nozzle and the outer nozzle, and the waterproof agent is applied to a wire harness. It can be solved by a tool.

According to the waterproofing agent applicator for a wire harness having the above structure, an inner nozzle is provided at the tip, and the inner tube storing the low-viscosity waterproofing agent and the inner tube are arranged so as to cover the outer periphery of the inner tube. An outer nozzle having a diameter larger than that of the inner nozzle is provided at the tip, and the outer tube that stores the high-viscosity waterproof agent is used, so that the outer periphery of the low-viscosity waterproof agent is coated with the high-viscosity waterproof agent. It is delivered from the nozzle. Therefore, the high-viscosity waterproof agent on the outside reliably prevents the low-viscosity waterproof agent from dripping or leaking, ensuring good workability, while allowing the low-viscosity waterproof agent to easily and reliably penetrate between the wires. Can be made. Therefore, it is possible to easily and reliably perform good water-stopping treatment in a short time at a low cost while suppressing the amount of water-stopping agent used to the minimum.

Another object of the present invention is to provide a waterproofing agent applicator for a wire harness, which applies a waterproofing agent between a plurality of electric wires of the wiring harness, and which is required for a single waterproofing treatment. A viscous waterstop and a high-viscosity waterstop are provided with a storage part that can store them in an adjacent state, and a delivery part for pushing out each of the waterstops in the storage part, and a pressing force is applied to the delivery part. This can be solved by a waterproofing agent applicator for a wire harness, which is characterized in that the respective waterproofing agents in the storage section are simultaneously delivered.

According to the waterproofing agent applicator for a wire harness having the above-mentioned structure, a storage section for storing a low-viscosity waterproofing agent and a high-viscosity waterproofing agent in a state of being adjacent to each other, and each waterproofing agent in the storage section Since it is provided with a delivery part for pushing out, the low viscosity water stop agent and the high viscosity water stop agent can be delivered once by applying a pressing force to the delivery part. Therefore, with a simple operation of one action in which a pressing force is applied to the delivery portion, the high viscosity water blocking agent prevents the low viscosity water blocking agent from dripping or leaking, ensuring good workability, while maintaining a low viscosity The liquid medicine can be easily and surely penetrated between the electric wires. Therefore, it is possible to easily and reliably perform good water-stopping treatment in a short time at a low cost while suppressing the amount of water-stopping agent used to the minimum.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a waterproofing agent applying method for a wire harness and a waterproofing agent applying tool of the present invention will be described in detail below with reference to FIGS. 1 and 2. 1 is a schematic perspective view showing a first embodiment of a waterproofing agent applying tool for a wire harness according to the present invention, and FIG. 2 is a schematic perspective view showing a waterproofing agent applying method for a wire harness in FIG. The a) figure shows each electric wire before the application of the water blocking agent, the (b) figure shows the application of the water blocking agent, and the (c) figure shows the state where each electric wire is bound with a sheet.

As shown in FIG. 1, the waterproofing agent applicator 20 of the present embodiment has a first nozzle 2 for delivering a low-viscosity waterproofing agent 23.
1 and a pair of second nozzles 22 provided on both sides (both left and right in the figure) of the first nozzle in the delivery direction and delivering a high-viscosity water blocking agent (thixotype) 24. Therefore, 2
By pumping a predetermined amount of the kind of the water blocking agent by a pump or the like, the water blocking agents 23 and 24 can be simultaneously applied to the surfaces of the plurality of electric wires 11 of the wire harness 10. That is, the waterproof agent applicator 20 has a waterproof agent 2 on the surface of each electric wire 11.
When applying 3, 24, the high-viscosity waterproof agent 24 is reduced by sending the low-viscosity waterproof agent 23 from the first nozzle 21 and simultaneously sending the high-viscosity waterproof agent 24 from the second nozzle 22. The viscous water-stopping agent 23 can be applied at the same time while being adjacent to both sides. As the low-viscosity waterproofing agent, one-component silicone RTV fluid type (SE9186
L) and the like, and as the high-viscosity water blocking agent, there is a one-liquid silicone RTV thixotype (SE9185) and the like.

Next, a method of applying the waterproof agent for applying the waterproof agents 23 and 24 between the electric wires 11 of the wire harness 10 will be described. First, as shown in FIG. 2A, a predetermined number of electric wires 11 forming a part of the wire harness 10 are separated to some extent in the vertical direction in the drawing. Next, as shown in FIG. 2B, the first and second nozzles 2 of the waterproof agent applicator 20.
The tips of the wires 1 and 22 are pressed against the surface of the electric wires 11 and moved along the vertical direction in the drawing, which is orthogonal to the longitudinal direction of each electric wire 11. At this time, the low-viscosity waterproof agent 23 is delivered from the first nozzle 21 and applied, and at the same time, the high-viscosity waterproof agent 24 is delivered from the second nozzle 22 so as to be adjacent to both sides of the low-viscosity waterproof agent 23. .

As a result, the high-viscosity water-stopping agent 24 on both sides of the low-viscosity water-stopping agent 23 prevents the low-viscosity water-stopping agent 23 from dripping, leaking, etc., so that a good coating operation can be realized. , The electric wire 11 adjacent to the low-viscosity waterproof agent 23,
A high water-stopping effect can be obtained by reliably penetrating between 11. Finally, as shown in FIG. 2 (c), each electric wire 1
1 is rolled into a circular cross section, and the sheet 25
Bundling the grommets (not shown) with the sheet 2
Attach to 5 parts.

Next, a second embodiment of the waterproofing agent applying method for a wire harness and the waterproofing agent applying tool of the present invention will be described in detail with reference to FIGS. 3 and 4. FIG. 3 shows a second embodiment of a waterproofing agent applicator for a wire harness of the present invention,
(A) is a schematic perspective view showing the main part of the waterproofing agent applicator, (b) is an enlarged perspective view of the waterproofing agent delivered,
FIG. 4 is a schematic sectional view of FIG. In addition, about the same structure and operation as the said 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIGS. 3 (a) and 4, the waterproofing agent applicator 30 of this embodiment is composed of double tubes 31,3.
It consists of two. That is, the inner nozzle 3 is attached to the tip.
4, an inner tube 32 that stores the low-viscosity waterproofing agent 23 therein, and an outer nozzle 33 that is arranged so as to cover the outer circumference of the inner tube and has a tip having an outer diameter larger than that of the inner nozzle 34. High viscosity waterstop 24
And an outer tube 31 that stores

Next, a method of applying the waterproof agent for applying the waterproof agent 23, 24 between the electric wires of the wire harness will be described. By applying pressure from the outside of the outer tube 31, the low viscosity waterproof agent 23 and the high viscosity waterproof agent 24 are simultaneously delivered from the inner nozzle 34 and the outer nozzle 33. Figure 3
As shown in (b), the outer and inner nozzles 33, 3
The water-stopping agent sent so as to be squeezed out from No. 4 is in a state where the outer periphery of the low-viscosity water-stopping agent 23 is covered with the high-viscosity water-stopping agent 24.

Therefore, while pressing the tip of the outer nozzle 33 of the waterproof agent applicator 30 against the surface of the electric wire, the outer tube 3
When 1 is pressed, the high-viscosity water-stopping agent 24 covering the outer periphery of the low-viscosity water-stopping agent 23 is simultaneously sent out and attached onto the surface of the electric wire. At this time, a part of the thin film high-viscosity waterproof agent 24 on the wire side is broken by the pressing force on the surface of the wire, the low-viscosity waterproof agent 23 that has been covered is permeated between the wires, and high viscosity on both sides is also increased. The water blocking agent 24 prevents the low viscosity water blocking agent 23 from dripping or leaking. Therefore, the low-viscosity water-stopping agent 23 is surely penetrated between the electric wires, so that a high water-stopping effect can be obtained and a good coating operation can be realized.

Next, a third embodiment of the waterproofing agent applying method for a wire harness and the waterproofing agent applying tool of the present invention will be described in detail with reference to FIG. FIG. 5 is a schematic perspective view showing a third embodiment of the waterproofing agent applying tool for a wire harness of the present invention. In addition, about the same structure and operation as the said 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIG. 5, the waterproof agent applicator 40 of this embodiment is composed of a storage section 41 and a delivery section 42. The storage part 41 is a low-viscosity waterproofing agent 23 for one wire bundling.
A high-viscosity water blocking agent 24 is stored adjacent to both sides of the low-viscosity water blocking agent. The delivery part 42 is for simultaneously delivering the low-viscosity water blocking agent 23 and the high-viscosity water blocking agent 24 in the storage part, and is fitted into the storage part 41 so as to be slidable by the pressing force from the arrow direction. Has been inserted.

Next, a method of applying the waterproof agent for applying the waterproof agents 23 and 24 between the respective wires of the wire harness will be described. First, before applying the waterproofing agents 23 and 24, the low-viscosity waterproofing agent 23 and the high-viscosity waterproofing agent 24 for one wire bundling, and the high-viscosity waterproofing agent 24 on both sides of the low-viscosity waterproofing agent 23 are applied. It is filled in the storage part 41 in the adjacent state. Next, when applying the waterproof agent 23, 24 to the surface of the electric wire, a pressing force is applied from the rear of the delivery portion 42 of the waterproof agent applicator 40. Thereby, the storage unit 4
The low-viscosity water blocking agent 23 and the high-viscosity water blocking agent 24 for one wire bundling stored in 1 are simultaneously sent out, and the respective water blocking agents 23, 2
4 is applied simultaneously on each wire surface.

Therefore, the low-viscosity water-stopping agent 23 can be surely permeated between the electric wires by a simple operation of one action of applying a pressing force to the delivery portion 42, and a high water-stopping effect can be obtained. High-viscosity waterproof agent 24 for low-viscosity waterproof agent 2
It is possible to prevent dripping and leakage of No. 3 and realize a good coating work.

As described above, according to the above embodiments,
When the water blocking agents 23 and 24 are applied to the surface of each electric wire 11, the low viscosity water blocking agent 23 and the high viscosity water blocking agent 24 are adjacent to each other along the longitudinal direction of the electric wire 11 (first and third). Embodiment), or the outer periphery of the low-viscosity waterproofing agent 23, the high-viscosity waterproofing agent 24
Are simultaneously applied in a state of being coated with (2nd embodiment).

Therefore, the high-viscosity water-stopping agent 24 prevents the low-viscosity water-stopping agent 23 from dripping or leaking to ensure good workability, while ensuring that the low-viscosity water-stopping agent 23 is provided between the electric wires 11. It can be permeated to obtain a high water blocking effect. That is, the low-viscosity waterproof agent 23 can surely perform waterproofing treatment on each of the electric wires in a short time work, which can ensure high waterproofing performance, and also the high-viscosity waterproofing agent 24. Due to
It is possible to prevent dripping and leakage during the application work of the low-viscosity water blocking agent 23, and ensure good workability. Therefore, it is possible to easily, reliably and inexpensively perform good coating workability in a short time while suppressing the use amount of the water blocking agents 23 and 24 to the minimum.

Further, according to the third embodiment, one-action operation of applying a pressing force to the delivery portion 42 of the waterproofing agent applicator 40 causes a low viscosity water stoppage for one wire bundle stored in the storage portion 41. The agent 23 and the high-viscosity water blocking agent 24 can be delivered at the same time, and a more efficient coating operation can be realized.

[0037]

As described above, according to the method for applying a waterproofing agent to a wire harness according to claim 1 of the present invention, a low-viscosity waterproofing agent and a high-viscosity waterproofing agent are simultaneously applied adjacent to each other. Therefore, the high-viscosity water blocking agent prevents the low-viscosity water blocking agent from dripping and leaking, ensuring good workability, while allowing the low-viscosity water blocking agent to easily and reliably penetrate between the electric wires to achieve a high stoppage. The water effect can be obtained. Therefore, it is possible to easily, reliably and inexpensively apply the waterproofing agent with good workability in a short time while suppressing the usage amount of the waterproofing agent to the minimum.

According to the method of applying a waterproofing agent for a wire harness according to a second aspect of the present invention, the low-viscosity waterproofing agent and the low-viscosity waterproofing agent are provided along a direction orthogonal to the longitudinal direction of the electric wire. Since the high viscosity water blocking agent is applied adjacent to both sides, the high viscosity water blocking agent on both sides surely prevents the low viscosity water blocking agent from dripping or leaking, ensuring good workability while maintaining low viscosity. The water blocking agent can easily and surely penetrate between the electric wires. Therefore, it is possible to easily and reliably apply the waterproofing agent at a low cost with a better workability in a short time while suppressing the use amount of the waterproofing agent to the minimum.

According to the method of applying a waterproofing agent for a wire harness of claim 3 of the present invention, since the waterproofing agent having the outer periphery of the low-viscosity waterproofing agent coated with the high-viscosity waterproofing agent is applied, the high-viscosity The waterproofing agent can prevent the low viscosity waterproofing agent from dripping and leaking surely to ensure good workability, and at the same time, the low viscosity waterproofing agent can easily and surely penetrate between the electric wires. Therefore, it is possible to easily and reliably apply the waterproofing agent at a low cost with a better workability in a short time while suppressing the use amount of the waterproofing agent to the minimum.

According to the waterproofing agent applicator for the wire harness of the fourth aspect of the present invention, the low-viscosity waterproofing agent is delivered first.
Since the second nozzle that sends out the high-viscosity waterproof agent is arranged adjacent to both sides of the nozzle, the high-viscosity waterproof agent on both sides prevents the low-viscosity waterproof agent from dripping, leaking, etc. It is possible to easily and surely penetrate the low-viscosity water blocking agent between the electric wires while securing the property, and to obtain a high water blocking effect. Therefore,
It is possible to apply the waterproofing agent easily, reliably and at low cost with good workability in a short time while suppressing the usage amount of the waterproofing agent to the minimum.

According to the waterproofing agent applicator for a wire harness of the fifth aspect of the present invention, an inner nozzle is provided at the tip, and the inner tube storing the low-viscosity waterproofing agent and the outer circumference of the inner tube are covered. The outer tube having the outer nozzle having a diameter larger than that of the inner nozzle and the outer tube storing the high-viscosity waterproof agent is disposed at the tip of the high-viscosity waterproof agent. Is discharged from the nozzle in a state of being covered by. Therefore, the high-viscosity waterproof agent on the outside reliably prevents the low-viscosity waterproof agent from dripping or leaking, ensuring good workability, while allowing the low-viscosity waterproof agent to easily and reliably penetrate between the wires. Can be made. Therefore, it is possible to easily, reliably and inexpensively apply the waterproofing agent with good workability in a short time while suppressing the usage amount of the waterproofing agent to the minimum.

According to the waterproofing agent applicator for a wire harness of the sixth aspect of the present invention, a storage section for storing a low-viscosity water-stopping agent and a high-viscosity water-stopping agent in a state of being adjacent to each other, and an inside of the storage section Since it is equipped with a delivery section for pushing out each waterstop
By applying a pressing force to the delivery portion, it is possible to deliver the low viscosity water blocking agent and the high viscosity water blocking agent for one time. Therefore, with a simple operation of one action in which a pressing force is applied to the delivery portion, the high viscosity water blocking agent prevents the low viscosity water blocking agent from dripping or leaking, ensuring good workability, while maintaining a low viscosity The liquid medicine can be easily and surely penetrated between the electric wires. Therefore, it is possible to easily, reliably and inexpensively apply the waterproofing agent with good workability in a short time while suppressing the usage amount of the waterproofing agent to the minimum.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of a waterproofing agent applicator for a wire harness of the present invention.

FIG. 2 is a schematic perspective view showing a method of applying a waterproofing agent to the wire harness in FIG. 1, where (a) shows each electric wire before applying the waterproofing agent, and (b) shows the waterproofing agent. In the middle of application,
(C) The figure shows a state in which the electric wires are bound by a sheet.

FIG. 3 shows a second embodiment of a waterproofing agent applying tool for a wire harness of the present invention, FIG. 3A is a schematic perspective view showing a main part of the waterproofing agent applying tool, and FIG. It is an expansion perspective view of the delivered waterproofing agent.

FIG. 4 is a schematic cross-sectional view of FIG.

FIG. 5 is a schematic perspective view showing a third embodiment of the waterproofing agent applicator for a wire harness of the present invention.

FIG. 6 is a schematic side view showing a waterproof seal material injection jig used in a conventional method for forming a water blocking portion of a wire harness.

7 is a side view showing a tip portion of the waterproof seal material injection jig in FIG.

FIG. 8 is a perspective view showing a conventional waterproofing device for a wire harness.

FIG. 9 is a cross-sectional view of essential parts showing a state during a coating operation in FIG.

[Explanation of symbols]

10 wire harness 11 electric wires 20 Waterstop Applicator (First Embodiment) 21 first nozzle 22 second nozzle 23 Low viscosity waterstop 24 High viscosity waterstop 25 sheets 30 Waterstop Applicator (Second Embodiment) 31 outer tube 32 inner tube 33 outer nozzle 34 inner nozzle 40 Waterstop Applicator (Third Embodiment) 41 Storage 42 Sending section

Claims (6)

[Claims] 1. A method for applying a waterproofing agent to a wire harness, which comprises applying a waterproofing agent between a plurality of electric wires of a wire harness, wherein a low-viscosity waterproofing water is applied when the waterproofing agent is applied to the surface of each of the electric wires. A method for applying a waterproofing agent to a wire harness, characterized in that the agent and a high-viscosity waterproofing agent are adjacently applied at the same time. 2. The low-viscosity waterproof agent is applied along the direction on the surface of each of the electrical wires before binding in a direction orthogonal to the longitudinal direction of the electrical wire, and the low-viscosity waterproof agent is adjacent to both sides of the low-viscosity waterproof agent. The method for applying a waterproofing agent to a wire harness according to claim 1, wherein the high-viscosity waterproofing agent is applied along the same direction. 3. A waterproofing agent in which the outer circumference of the low-viscosity waterproofing agent is coated with the high-viscosity waterproofing agent on the surface of each of the electrical wires before bundling along a direction orthogonal to the longitudinal direction of the electrical wire. The method for applying a waterproofing agent to a wire harness according to claim 1, wherein 4. A waterproofing agent applicator for a wire harness, which applies a waterproofing agent between a plurality of electric wires of a wire harness, the first nozzle delivering a low-viscosity waterproofing agent, and the first nozzle. Secondly located adjacent to both sides to deliver high viscosity waterstop
Nozzle, and when applying the water blocking agent to the surface of each of the electric wires, the low viscosity water blocking agent and the high viscosity water blocking agent are simultaneously delivered from the first nozzle and the second nozzle. A waterproofing agent applicator for wire harnesses. 5. A waterproofing agent applicator for a wire harness, which applies a waterproofing agent between a plurality of electric wires of a wire harness, the inner tube having an inner nozzle at a tip thereof and storing a low-viscosity waterproofing agent. The outer tube is arranged so as to cover the outer circumference of the inner tube, has an outer nozzle having a diameter larger than that of the inner nozzle at the tip, and is configured by an outer tube that stores a high-viscosity waterproof agent, and presses from the outer side of the outer tube. A waterproofing agent applicator for a wire harness, characterized in that the low-viscosity waterproofing agent and the high-viscosity waterproofing agent are simultaneously delivered from the inner nozzle and the outer nozzle by adding them. 6. A waterproofing agent applicator for a wire harness, which applies a waterproofing agent between a plurality of electric wires of a wire harness, comprising a low-viscosity waterproofing agent and a high-viscosity waterproofing agent for one-time use required for waterproofing treatment. The liquid medicine is provided with a storage part capable of storing the liquid medicine in an adjacent state, and a delivery part for pushing out each of the water blocking agents in the storage part, and by applying a pressing force to the delivery part, the inside of the storage part A waterproofing agent applicator for a wire harness, wherein the waterproofing agent is simultaneously delivered.