JPS5932967B2 - Waterproofing method for cable terminals - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved method for waterproofing cable terminals such as connectors connected to cable ends, branches, and plugs connected to the branches.

When waterproofing this type of cable terminal, it is required that waterproofness be maintained over a long period of time, that the waterproofing section be easy to dismantle, and that no tightening force be applied to the cable terminal.

In the conventional technology, similar to the waterproofing treatment of cable connections, an adhesive layer is provided on the outer sheath of the end of the cable, and then a waterproof bag is placed over the end of the cable, and the opening of this waterproof bag is placed outside the end of the cable. The cable was squeezed so as to be bonded with the adhesive layer on the cable jacket, and a waterproof tape was wrapped across the squeezed end and the cable jacket.

However, with this method, it is difficult to maintain waterproofness over a long period of time because moisture infiltrates through the creases in the squeezed end of the waterproof bag. It took a considerable amount of time and effort to peel off the upper adhesive layer, resulting in poor workability.

An object of the present invention is to provide a method for waterproofing a cable end portion that can maintain waterproofness for a long period of time and allows easy disassembly of the waterproofing portion.

Embodiments of the present invention will be described in detail with reference to the drawings.
Figures 4 to 4 show the waterproofing method of the present invention in the order of steps.

First, as shown in Fig. 1, a waterproof bag 10 made of plastic such as polyethylene and subjected to waterproof treatment is prepared.This is done by cutting a plastic sleeve in the longitudinal direction and applying a heat sealer or the like to one end. It can be made by sealing.

Next, self-fusing sheets 12 and 12' having separators 14 and 14' are attached to both halves of the outer periphery of the end of the waterproof bag 10 near the opening 10a.

Thereafter, as shown in FIG.
．． A waterproof bag 10 having a diameter of 12' is placed over the cable end 2, such as a connector, and the end jacket of the cable 1.

This waterproof bag 10 is then assembled, as shown in FIGS. 3A to 3C, after peeling off the separators 14 and 14', the central portion 12a of the end thereof is removed.

12'a, and make the excess portions 12b and 12'b on both sides of the cable into close contact with the outer jacket of the cable.
), fold the surplus parts 12b and 12'b so that they are in close contact with each other (FIG. 3B), and then fold the surplus parts 12 that are in close contact with each other.
b, 12'b is closed by wrapping it around the central portion 12a, 12'a (Figure 3C).

In this case, the folded surplus parts 12b, 12'b are fused to each other in the self-fusing sheet part, and the central part 12a.

12'a in the same manner, the moisture that enters between the wrinkled portions of the waterproof bag 10 will not proceed further toward the opening 10a since the adhesive portion of the self-fusing sheet acts as a barrier.

Finally, as shown in FIG. 4, the waterproof bag 10 is closed.
A waterproof tape 16 is wrapped and bonded across the self-fusing sheet portion and the cable jacket.

As this waterproof tape 16, for example, a self-fusing tape,
Rubber tape or vinyl tape can be used.

FIG. 5 shows that the cable end 2 consists of a branch 3 provided at the end of the cable and a plug 4 connected to this branch, again similar to the previous embodiment. Then, the entire branch part 3 and plug 4 can be covered with a waterproof bag 10 and processed in the same process.

According to the present invention, as described above, the outer periphery of the end of the waterproof bag on the opening side is adhered to each other by the self-fusing sheet and tightly adheres to the cable jacket, and is folded and wrapped, so that it can be seen between the wrinkles of the bag. Waterproofness is maintained over a long period of time because it effectively prevents moisture from entering, and the adhesive layer on the cable jacket only needs to be in contact with the waterproof tape for a short length, making it easy to remove the adhesive layer during disassembly. It is easy to use and has good workability, and furthermore, since the cable terminal part is not tightened by the waterproof bag, it is not damaged.

[Brief explanation of drawings]

Figures 1A and B are top and front views of the waterproof bag used in the present invention, Figure 2 is a sectional view showing the waterproof bag covering the cable end, and Figures 3A to C. 4 is a cross-sectional view showing the order of closing a waterproof bag, FIG. 4 is a cross-sectional view of a waterproof portion formed by the method of the present invention, and FIG. 5 is a cross-sectional view of a waterproof portion according to another embodiment of the present invention. It is. 1... Cable, 2... Terminal section, 10
...Waterproof bag, 12, 12'...Self-fused sheet, 12a. 12'a...Central part, 12b, 12'b...
...Excess portion, 16...Waterproof tape.

Claims (1)

[Claims] 1. A self-adhesive sheet is pasted on the outer periphery of the waterproof bag near the opening, and the waterproof bag is placed over the end of the cable and the outer sheath of the end of the cable, and the waterproof bag is placed near the opening of the waterproof bag. After tightly fitting the end of the cable around the end sheath of the cable, the excess portions on both sides are folded and wrapped and adhered with the self-fusing sheet to close the opening of the waterproof bag, and then the waterproof bag is closed. A method for waterproofing a cable end portion, comprising wrapping and adhering a waterproof tape across the self-fusing sheet portion of the cable and the outer sheath of the cable.