JP3880043B2 - Method for applying water-stopper to wire harness and water-stopper applicator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for applying a water-stopping agent to a wire harness in which a water-stopping agent is applied to each electric wire in order to perform a water-stopping treatment between the electric wires of the wire harness that is inserted into a grommet to be attached to a panel through hole of an automobile, for example. And a water stop agent applicator.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, in a wire harness routed through a panel or the like that partitions the inside and outside of a vehicle cabin, a rubber grommet is attached to a through hole provided in the panel. The wiring harness is routed through the grommet, so that the gap between the grommet and the panel through hole is surely sealed to prevent water from entering the vehicle interior from the through hole of the panel.
[0003]
However, if there are gaps between the grommets and the wires of the wire harness or between the wires, there is a possibility that the vehicle interior will be flooded through these gaps. Therefore, these gaps also need to be sealed.
[0004]
Therefore, JP-A-1-220313 discloses a method for forming a water-stop portion of a wire harness that seals a gap between electric wires.
That is, as shown in FIG. 4 and FIG. 5, the water stop portion forming method is waterproof in a state where the distal end portion 31 of the waterproof sealing material injection jig 30 is inserted between the electric wires 41 of the wire harness 40. The waterproof seal material is pushed out from the waterproof seal material extrusion hole 32 provided in the peripheral wall of the distal end portion 31 of the seal material injection jig 30 and filled between the electric wires 41.
[0005]
Japanese Patent Application Laid-Open No. 10-172361 describes a waterproofing method for a wire harness that performs a waterproofing process between electric wires using a waterproofing apparatus.
That is, as shown in FIG. 6 and FIG. 7, in the wire harness assembly line, the waterproofing device 50 of the wire harness 60 is used to apply the water-stopping agent 52 to a required portion of the electric wire group at the time of wiring.
[0006]
As shown in FIG. 7A, the waterproof processing device 50 transfers the wires 61 while aligning them in a line along the transfer path 51 (see FIG. 6) as shown in FIG. Each electric wire 61 is separated into one by one.
And as shown in FIG.7 (b), when each said electric wire 61 passes the liquid storage groove | channel 53 which stored the water-stopping agent supplied from the nozzle 52, a water-stopping agent is on the outer periphery of each electric wire 61. As shown in FIG. Applied. Thereafter, each electric wire 61 coated with a water-stopping agent falls onto the sheet 54 disposed on the receiving member 55 and is bound into a circular cross section by the sheet 54 cut to a predetermined length.
[0007]
[Problems to be solved by the invention]
However, in the above-described conventional method for forming the water stop portion of the wire harness 40, it is difficult to reliably fill the waterproof seal material between the electric wires 41.
That is, if it is going to be filled reliably, for example, the tip 31 of the waterproof sealing material injection jig 30 needs to be inserted between the electric wires 41 at various locations in the longitudinal direction of the wire harness 40 and the waterproof sealing material needs to be filled. . For this reason, there has been a problem that man-hours are increased and an increase in cost is inevitable.
[0008]
Moreover, in the conventional wire harness prevention processing apparatus 50 described above, a water stop agent can be reliably applied between the electric wires 61 of the wire harness 60 in the wire harness assembly line.
However, since the whole apparatus becomes large-scale, the equipment cost is greatly increased. Moreover, since the water-stopping agent is applied in a state where each electric wire 61 is separated one by one, the usage amount of the water-stopping agent can be suppressed, but on the other hand, it takes a very long time for the application work and an increase in cost can be avoided. There was no problem.
[0009]
The object of the present invention is made by paying attention to the problems of the above-described conventional technology, and is easy and while suppressing the amount of water-stopping agent used to a minimum with respect to a wire harness composed of a large number of electric wires. An object of the present invention is to provide a method of applying a water-stopping agent to a wire harness and a water-stopping agent applicator that can reliably apply the water-stopping agent in a short time at a low cost.
[0010]
[Means for Solving the Problems]
The above-mentioned problem according to the present invention is a method of applying a water-stopping agent to a wire harness that applies a water-stopping agent between a plurality of wires of a wire harness that is inserted into a mounting grommet attached to a panel through-hole,
The water-stopping agent is applied to the surface of each electric wire in advance, and a pair of flat plate members are sandwiched between the surfaces of the electric wires to which the water-stopping agent has been applied by using an application jig that can freely approach and separate from each other. In the state, a pressing force is applied from the outside of the coating jig, and the coating jig is relatively moved along the row direction of the electric wires, so that the water stop agent is infiltrated between the electric wires. It can achieve by the water-stopper application method to the wire harness characterized by these.
[0011]
According to the method of applying the water-stopping agent to the wire harness, the water-stopping agent is applied to the surface of each electric wire in advance, and the water-stopping agent is applied to the pair of flat plate members by an application jig that can be moved toward and away from each other. The surface of each electric wire coated with is sandwiched. In this state, a pressing force is applied to the coating jig from the outside, and the coating jig is relatively moved along the row direction of each electric wire, so that the water-stopping agent can easily and reliably penetrate between the electric wires. be able to.
[0012]
Further, the above-mentioned problem according to the present invention is a water-stopping agent applicator for applying a water-stopping agent between a plurality of wires of a wire harness that is inserted into a mounting grommet attached to a panel through hole,
A pair of flat plate members that can be moved toward and away from each other along the row direction of each electric wire with the pressing force applied from the outside while sandwiching each electric wire previously coated with the water stop agent on the surface It can achieve by the water-stopper applicator characterized by providing.
[0013]
According to the water stop agent applicator, each electric wire having a water stop agent previously applied to the surface is sandwiched between the flat plate members by the approach of the flat plate members. And each flat member is relatively moved along the row direction of each electric wire in the state where pressing force was applied from the outside of each flat member. Thereby, a water stop agent osmose | permeates easily between each electric wire reliably.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, one embodiment of a waterproofing agent application method to a wire harness of the present invention and a waterproofing agent applicator is described in detail based on Drawing 1 thru / or Drawing 3.
FIG. 1 is a schematic cross-sectional view showing a process of applying a water-stopping agent to an electric wire showing an embodiment of a method for applying a water-stopping agent to a wire harness of the present invention, and (a) is before applying the water-stopping agent to each electric wire. (B) shows the state of each electric wire after application of a water-stopper.
2 is a schematic cross-sectional view showing the penetration process of the water-stopping agent into each electric wire in FIG. 1, (a) shows a state where a water-stopper applicator is attached to each electric wire, and (b) shows the water-stopping agent. The applicator is relatively moved along the row direction of each electric wire, and shows a state where the water-stopping agent is infiltrated between the electric wires. (C) is the water-stopper applicator infiltrating the water-stopping agent between the electric wires. (D) shows the state which bound each electric wire.
FIG. 3: is a schematic perspective view which shows the water-stopper applicator of this invention, (a) shows 1st Embodiment of a water-stopper applicator, (b) 2nd Embodiment of a water-stopper applicator. Indicates.
[0015]
First, the structure of the water-stopper applicator of the present invention will be described.
As shown in FIG. 3 (a), the waterproofing agent applicator 20A of the first embodiment is rotated by a hinge 22 at the upper end in the drawing so that the pair of flat plate members 21 and 21 can be moved toward and away from each other. It is combined freely. A pinching portion 21a bent inward is formed at the lower end of the flat plate member 21 in the figure, and both the pinching portions 21a and 21a are in contact with each other in the coupled state.
Thereby, between the flat members 21 and 21, a holding space for holding a plurality of electric wires is formed. Accordingly, the use holder can rotate the hinge 22 in the outward direction to separate both the holding portions 21a and 21a, and then can take in the plurality of electric wires into the holding space.
[0016]
Further, as shown in FIG. 3B, the waterproofing agent applicator 20B of the second embodiment is bent at an acute angle at the upper end in the drawing so that the pair of flat plate members 23 and 23 can approach and separate from each other. It has been. A pinching portion 23a bent inward is formed at the lower end of the flat plate member 23 in the figure. In a normal state, the pair of flat plate members 23 and 23 are in a separated state, and the flat plate member 23 is spaced between the flat plate members 23 and 23. Has a holding space for holding a plurality of electric wires. Accordingly, the use holder can rotate the hinge 22 in the outward direction to separate both the holding portions 21a and 21a, and then can take in the plurality of electric wires into the holding space.
[0017]
Next, the water-stopper application method to the wire harness of this embodiment is demonstrated based on FIG. 1 and FIG.
First, as shown to Fig.1 (a), the some electric wire 11 is scattered to some extent linearly, and an electric wire row | line | column is formed. And as shown in FIG.1 (b), the water stop agent 12 is previously apply | coated to the surface of this electric wire row | line | column.
[0018]
Next, as shown in FIG. 2 (a), the plate-like members 21 and 21 of the application jig 20 are rotated so as to accommodate the 11 rows of electric wires coated with the water-stopping agent 12 in the holding space. . Next, as shown in FIG. 2 (b), the surface of each row of electric wires 11 is sandwiched between the holding portions 21a, 21a of the flat plate-like members 21, 21, and in this state, from the outside to the inside of each flat plate-like member 21 A predetermined pressing force is intermittently applied in the direction of each electric wire 11 row, and the holding portions 21a and 21a of the coating jig 20 are gradually moved relative to the upper direction from the lower end of the electric wire 11 row in the figure.
[0019]
Thereby, as shown in FIG.2 (c), it can discharge | emit from the inside of the jig | tool 20 for application | coating, osmose | permeating between each electric wire 11 so that the water stop agent 12 of each electric wire 11 row | line | column may be narrowed down. Thereafter, as shown in FIG. 2 (d), each electric wire 11 infiltrated with the water-stopping agent 12 is bound into a circular cross section by a sheet 14.
[0020]
As described above, according to the water-stopping agent application method and the water-stopping agent applicator to the wire harness of the present embodiment, the water-stopping agent 12 is applied to the surface of each electric wire 11 in advance, and each of the applying jigs 20 is applied. The surface of each row of the electric wires 11 coated with the water blocking agent 12 is sandwiched by the sandwiching portion 21a of the flat plate-like member 21. In this state, a pressing force is intermittently applied to each flat plate member 21 from the outside toward the electric wire 11 side, and the tip of the sandwiching portion 21a is gradually moved along the width direction of the electric wire 11 row (vertical width direction in FIG. 2). Move relative to.
[0021]
That is, by applying intermittent pressing force to the flat plate member 21 from the outside while gradually moving the tip of the clamping portion 21a of the flat plate member 21 along the width direction of the electric wire 11 row, The applied water-stopping agent 12 can be surely penetrated into the gaps between the electric wires 11.
Therefore, it is possible to easily and surely apply the waterproofing agent 12 in a short time at a low cost while suppressing the amount of the waterproofing agent 12 used to the wire harness composed of a large number of electric wires 11. it can.
Moreover, the water stop work can be performed only by placing each electric wire 11 on the wiring board and separating the electric wire 11 to some extent, and it is possible to improve the workability.
[0022]
【The invention's effect】
As described above, according to the method for applying a water-stopping agent to the wire harness of the present invention, the surface of the electric wire on which the water-stopping agent has been applied in advance by using a jig for applying a pair of flat plate members to each other can be freely moved. While sandwiching and applying a pressing force from the outside of the application jig, the application jig is relatively moved along the row direction of each electric wire.
Therefore, it is possible to easily and reliably apply the water-stopping agent in a short time at a low cost while minimizing the amount of water-stopping agent used.
[0023]
According to the water-stopping agent applicator of the present invention, the electric wires that have been previously coated with a water-stopping agent are sandwiched between the wires, and they are relatively close to each other along the row direction of the electric wires with a pressing force applied from the outside. -It has a pair of plate-like members that can be separated.
Therefore, the water-stopping agent can be applied easily and reliably at a low cost in a short time while minimizing the amount of the water-stopping agent used with a flat member having a simple structure.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing a process of applying a water-stopping agent to an electric wire, showing an embodiment of a method of applying the water-stopping agent to a wire harness of the present invention, and (a) is a water-stopper application of each electric wire The previous state is shown, and (b) shows the state after application of the water stop agent to each electric wire.
2 is a schematic cross-sectional view showing a penetration process of a water-stop agent into each electric wire in FIG. 1, (a) shows a state where a water-stop agent applicator is attached to each electric wire, and (b) shows a water stop. The agent applicator is relatively moved along the row direction of each electric wire, and shows a state where the water stop agent is infiltrated between the electric wires. (C) shows the water stop agent infiltrated between the electric wires by the water stop agent applicator. (D) shows a state in which the electric wires are bundled.
FIG. 3 is a schematic perspective view showing a water-stopper applicator of the present invention, in which (a) shows a first embodiment of the water-stopper applicator, and (b) is a second embodiment of the water-stopper applicator. The form is shown.
FIG. 4 is a schematic side view showing a waterproof seal material injecting jig used in a conventional method for forming a waterstop portion of a wire harness.
5 is an enlarged side view of the distal end portion of the waterproof sealing material injection jig in FIG. 4. FIG.
FIG. 6 is a perspective view showing a conventional waterproof treatment apparatus for a wire harness.
7 is a cross-sectional view of the main part showing a state during the coating operation in FIG. 6. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Electric wire 12 Water-stop agent 20,20A, 20B Water-stop agent applicator 21,23 Flat member 21a, 23a Clamping part

Claims (2)

A method of applying a water-stopping agent to a wire harness that applies a water-stopping agent between a plurality of wires of a wire harness that is inserted into a grommet for mounting attached to a panel through hole,
The water-stopping agent is applied to the surface of each electric wire in advance, and a pair of flat plate members are sandwiched between the surfaces of the electric wires to which the water-stopping agent has been applied by using an application jig that can freely approach and separate from each other. In the state, a pressing force is applied from the outside of the coating jig, and the coating jig is allowed to permeate between the electric wires by relatively moving the coating jig along the row direction of the electric wires. The water-stopper application method to the wire harness characterized by these. A waterproofing agent applicator for applying a waterproofing agent between a plurality of wires of a wire harness that is inserted into a grommet for mounting attached to a panel through hole,
A pair of flat plate members that can be moved toward and away from each other along the row direction of each electric wire while sandwiching each electric wire previously coated with the water blocking agent on the surface and applying a pressing force from the outside. A water-stopping agent applicator characterized by comprising:

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