JP2003036752A - Method for infiltrating water sealant into wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sealant infiltrating method into a wire harness, which can surely infiltrate a water sealant into each space between electric wires. SOLUTION: In this water sealant infiltrating method into a wire harness, the wires 16 in the portion inserted into a grommet of the wire harness are aligned and held in a row vertically by a pair of wire holding members 36, 37 arranged at an interval for coating the water sealant 19. After the wires 16 between the wire holding members 36, 37 are coated with the water sealant 19, the wire holding members 36, 37 for holding the wires 16 are shaked crosswise to the wires 16. Hereby, since the aligned wires 16 are twisted each other and each space between adjacent wires 16, 16 is moved, the water sealant 19 can be infiltrated into each space between wires 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of infiltrating a waterproofing agent into a wire harness for waterproofing between electric wires of a wire harness which is inserted into a grommet mounted in a panel through hole of an automobile.

[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 gap between the grommet and the panel through hole is reliably sealed to prevent water from entering the vehicle compartment 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 may enter the vehicle interior through these gaps, so these gaps also need to be sealed.

Therefore, in order to seal the gap, a wire is sealed between the electric wires by using a device as disclosed in Japanese Unexamined Patent Publication No. 10-224960. That is, as shown in FIG. 4, on the wiring board 11 for wire harness assembly, a plurality of electric wires for supporting a wire group composed of a plurality of electric wires in a branched shape corresponding to a predetermined wiring form is provided. The wire group receiving jigs 15a, 15b, 15c, 15d, 15e are attached, and a waterproofing jig 12 for applying waterproofing agent to the wire group to perform waterproofing is provided at a predetermined position on the way. It is arranged.

In the waterproofing jig 12, a board 13 is mounted on the wiring board 11, and a pair of electric wire holding members 14, 14 are erected on the board 13 at a predetermined interval. The electric wire holding member 14 is provided with slits 17 for vertically holding the electric wires at the grommet insertion site one by one.

Using such a device, waterproofing is performed as follows. That is, first, as shown in FIG. 5 (A), the electric wires 16 at the grommet insertion portion are vertically aligned on one plane by the slits 17 of the electric wire holding member 14. Next, as shown in FIG. 5 (B), on the surface of the electric wire 16 placed between the pair of electric wire holding members 14 and 14 and aligned, the waterproof agent applying nozzle 18 causes the waterproof agent 1 in an unsolidified state.
Apply 9.

Next, as shown in FIG. 5 (C), a strip-shaped film 21 for bundling is attached to one surface of the electric wire 16 coated with the water blocking agent 19 to arrange the electric wires 16 in one row. Then, the electric wire 16 is removed from the waterproofing jig 105. Next, as shown in FIG. 5D, the band-shaped film 21 is wound and fastened to bind the electric wires 16 into a circular cross section.

Next, as shown in FIG. 5 (E), a tape 23 is wound around the binding position of the strip-shaped film 21,
The cross-sectional dimensions of the electric wire 16 are shaped into a circle that fits tightly into the harness insertion hole of the grommet, and the water blocking agent 19 is solidified. Then, finally, as shown in FIG. 5F, the grommet 25 is mounted on the winding position of the tape 23.

[0009]

However, in the above-mentioned conventional waterproofing agent applying method, since the waterproofing agent 19 is applied in a state where the electric wires 16 are held in one row, the adjacent electric wires 16, 16 are There is a problem in that the waterproofing agent 19 may not be able to sufficiently penetrate between the electric wires 16 and 16 due to the mutual contact, and the waterproof treatment may not be reliably performed.

An object of the present invention was made in view of the above-mentioned conventional problems, and provides a method of permeating a waterproofing agent into a wire harness, which allows a waterproofing agent to reliably penetrate between electric wires. Especially.

[0011]

In order to solve the above-mentioned problems, a method of infiltrating a waterproofing agent into a wire harness according to claim 1 is such that between wires of a wire harness to be inserted into a mounting grommet into a panel through hole. A method of infiltrating a waterproofing agent into a wire harness for applying a waterproofing agent to waterproof between electric wires, wherein the electric wires are arranged in a substantially reverse U shape.
Aligned in a row by a pair of V-shaped wire holding members, applying a waterproofing agent to the aligned wires between the wire holding members, and then reciprocally rocking at least one of the wire holding members to align the wires. The water blocking agent is permeated between the electric wires by twisting the formed electric wires with each other.

According to the method of permeating a waterproofing agent into a wire harness having the above-mentioned structure, a pair of electric wires forming a portion of the wire harness to which the grommet is mounted are arranged at intervals for applying the waterproofing agent. By being held by the wire holding member, they are arranged in one row. Then, after applying the waterproofing agent between the electric wire holding members, at least one of the electric wire holding members holding the electric wires is reciprocally rocked to twist the electric wires arranged in one row to thereby adjoin the electric wires. By moving relatively, the water blocking agent can be permeated between the electric wires.

According to the method of infiltrating the waterproofing agent into the wire harness according to claim 2, there is provided the method of infiltrating the waterproofing agent into the wire harness according to claim 1, wherein both of the pair of electric wire holding members are provided. When swinging back and forth, it is characterized by swinging in mutually opposite directions.

According to the method of infiltrating the waterproofing agent into the wire harness having the above-described structure, when both wire holding members are reciprocally rocked, the wires are reciprocally rocked in opposite directions to twist the wire more. be able to. Thereby, the water blocking agent can be permeated between the electric wires.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for permeating a waterproofing agent into a wire harness of the present invention will be described below in detail with reference to FIGS. 1 to 4. FIG. 1 is a perspective view showing an embodiment of a method for permeating a waterproofing agent into a wire harness according to the present invention, FIG. 2 is a perspective view showing a state in which the electric wire in FIG. 1 is held between electric wire holding members, and FIG. FIG. 6 is an operation explanatory view showing a state in which the electric wire holding member in which the electric wires in FIG. It should be noted that the description of the configuration and the operation of the portions common to the related art will be omitted.

As shown in FIG. 1, a pair of electric wire holding members 3 according to the method of infiltrating the waterproofing agent into the wire harness of this embodiment.
6, 37, a handle portion 41 is provided upward from the inverted U-shaped top portion. Further, below the handle portion 41, a pair of support portions 42 and 43 forming an inverted U-shape are provided. As shown in FIG. 2, the distance D between the support portions 42 and 43 is set in accordance with the outer diameter of the electric wire 16 in order to hold the electric wires 16 at the grommet insertion site one by one in the longitudinal direction. .

As shown in FIG. 3, a pair of mounting holes 34a, 34a are provided at a predetermined interval for applying a water blocking agent on a substrate 34 mounted at a predetermined position on a wiring stand. Electric wire holding members 36 and 37 having a substantially inverted U shape are swingably held in the mounting holes 34a. That is,
The diameter of the mounting hole 34a is set to be larger than the outer diameter of the support portion 42 of the wire holding members 36 and 37 so as to be swingable. In addition, the wire holding members 36 and 37 include the pair of supporting portions 4
One of the lengths 2 and 43 is set to be longer than the other length, and the lower end of the long support portion 42 is attached to the mounting hole 3 of the substrate 34.
By being inserted into 4a, it is swingably held by the substrate 34.

Next, a method of penetrating the waterproofing agent into the wire harness of this embodiment will be described. As shown in FIGS. 1 and 2, first, a pair of electric wire holding members 36 and 37 are attached to the electric wire 16 with an interval for applying a water blocking agent to the electric wire 16 in a portion through which a grommet (not shown) is inserted. Put the wire 16 vertically between the support parts 42 and 43 by covering it from above.
Insert while aligning in one row. That is, since the electric wires 16 before insertion are substantially circular as shown in FIG. 1, the electric wires 16 are supported one by one as shown in FIG.
Insert between Nos. 2 and 43 and align in one row. Then, as shown in FIG. 3, the lower end of the long support portion 42 is inserted into the mounting hole 34 a on the substrate 34.

Next, as shown in FIG. 2, the water blocking agent 1 in an unsolidified state is formed on the electric wire 16 between the pair of electric wire holding members 36 and 37.
No. 9 is applied with a waterproof agent application nozzle 18 (see FIG. 5 (B)). That is, the handle portion 4 of one wire holding member 36
Hold the wire 1 and rotate it to the side of the short support portion 43, and then
After applying the waterproofing agent 19 to the front surface side of the row, the electric wire holding member 36 is rotated to the long support portion 42 side, and then the similar waterproofing agent 19 is applied to the back surface side of the row of electric wires 16.

Next, as shown in FIG. 3, at least one of the electric wire holding members 36 is gripped by the handle portion 41 and the electric wire 16 is held.
In the lateral direction orthogonal to the row, the lower end of the long support portion 42 is swung to the left and right in the drawing within a swing angle θ range. As a result, the entire wire holding member 36 swings within the swing angle θ range around the lower end of the long support portion 42 inserted into the mounting hole 34a of the board 34.

Therefore, by swinging the wire holding member 36 that holds the wires 16 aligned in a row,
Since the wire is twisted and relatively moved between the adjacent electric wires 16 and 16, the waterproof agent 19 can be permeated into the gap between the electric wires 16 and 16, and the waterproof treatment can be reliably performed.

The long supporting portions 42 of the wire holding members 36 and 37 are attached to the mounting holes 34a of the board 34, and the lower ends of the short supporting portions 43 are oscillated reciprocally while being separated from the upper surface of the board 34. Accordingly, the swing angle θ can be set evenly on the left and right, and the electric wire 16 can be sufficiently twisted. Further, when the wire holding members 36 and 37 are not swung, the lower end of the short support portion 43 is in contact with the upper surface of the substrate 34, so that a stable wire holding state can be secured. In this state, the wire holding members 36, 37 can be reciprocally swung only in the direction opposite to the short support portion 43.

In the method of infiltrating the waterproofing agent into the wire harness of this embodiment, the pair of wire holding members 36, 3
Although the case where only one of the seven wires 7 is swung to twist the electric wire 16 has been described, both electric wire holding members 36 and 37 may be swung relatively in opposite directions. In this case, even if the swing angle θ (see FIG. 3) of each wire holding member 36, 37 is small, the wire 16 can be sufficiently twisted, and the penetration of the waterproofing agent 19 can be promoted in a short time. be able to.

[0024]

As described above, according to the method of infiltrating the waterproofing agent into the wire harness of the present invention, the electric wires are arranged in a row by a pair of substantially U-shaped electric wire holding members arranged at predetermined intervals. After applying the waterproofing agent to the aligned wires between the wire holding members, the at least one wire holding member is oscillated back and forth, and the aligned wires are twisted with respect to each other. Penetrate in between. Therefore, by twisting the wire row and moving the wires relatively to each other, the water blocking agent can be permeated between the wires, and the water blocking treatment can be reliably performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a method for permeating a waterproofing agent into a wire harness according to the present invention.

FIG. 2 is a perspective view showing a state where the electric wire in FIG. 1 is held between electric wire holding members.

FIG. 3 is an operation explanatory view showing a state in which an electric wire holding member in which the electric wires in FIG. 1 are aligned and held in one row is reciprocally rocked.

FIG. 4 is a perspective view showing a conventional waterproofing agent permeation method into a wire harness.

FIG. 5 is a process diagram showing a procedure for waterproofing the wire harness in FIG.

[Explanation of symbols]

16 electric wires 19 Waterstop 34 substrate 34a Mounting hole 36, 37 Wire holding member 41 Handle 42,43 support W wire harness θ swing angle

Claims (2)

[Claims] 1. A waterproofing agent is applied between the electric wires of a wire harness to be inserted into a grommet for mounting in a panel through hole,
A method of infiltrating a waterproofing agent into a wire harness for waterproofing between electric wires, wherein the electric wires are arranged in a row by a pair of substantially inverted U-shaped electric wire holding members arranged at predetermined intervals, After applying a water blocking agent to the electric wires aligned between the electric wire holding members,
Reciprocating at least one of the electric wire holding members,
A method for permeating a waterproofing agent into a wire harness, wherein the waterproofing agent permeates between the electric wires by twisting the aligned electric wires with each other. 2. The method of infiltrating a waterproofing agent into a wire harness according to claim 1, wherein when both of the pair of electric wire holding members are rocked back and forth, they are rocked in mutually opposite directions. .