JPS63268419A - Cable connection part - Google Patents

Abstract

PURPOSE:To prevent a sealer from cold-flowing by engaging the sealer by a sealing washer. CONSTITUTION:In a cable connection part, washer engaging slots 8 are formed at both ends of a cable through hole 5 of each end plate 3, sealing washers 9 are engaged and connected. The washer 9 has a flange 9B at one end of its cylindrical washer body 9A, is formed with a cutout 9C circumferentially, regulated in its circumferential length to be adapted for the outer diameter of a cable 6. The washer 9 is stabilized in its attitude and prevented from being removed by engaging the flange 9B with the slot 8. Thus, since a sealer 7 between the inner periphery of the plate 3 and the outer periphery of the cable 6 is disposed with the washers 9 at both ends in the connection part, even if the pressure in a connection box 2 is acted, a cold flowing can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cable connection section that connects a plurality of cables within a connection box.

[Prior Art] In this type of conventional cable connection section, as shown in FIG. 6, in order to seal the cable entry port 2 of the connection box 1,
A two-part end plate 3 made of rubber or the like is airtightly attached to the cable entry port 2 via a sealing material 4, and a number is inserted between the cable through hole 5 of the end plate 3 and the cable 6. Sealing was performed using a sealing material 7.

[Problems to be Solved by the Invention] However, in such a cable connection part, there is a problem in that the sealing material 7 cold-flows due to the gas pressure in the connection box, leading to a gas leak.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cable connection that can prevent cold flow of the sealant.

[Means for Solving the Problems] The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 to 5 corresponding to the embodiments. A plurality of cables 6 to be connected to the junction box 1 are drawn in, and an end plate 3 is airtightly attached to the cable entry port 2 of the junction box 1 for pulling the cables 6 into the junction box 1. In the cable connection part where a sealing material 7 is interposed between the hole 5 and the cable 6 to perform sealing, each washer locking groove 8 at both ends of the cable through hole 5 of the end plate 3 has the above-mentioned It is characterized in that sealing washers 9 that dam the sealing material 7 are respectively locked.

[Function] If the sealing washers 9 are locked at both ends of the cable through hole 5 of the end plate 3 in this way, even if the gas pressure inside the junction box 1 acts, the sealing material 7 will be blocked by the sealing washers. cold flow is prevented.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 5. Note that parts corresponding to those in FIG. 6 described above are designated by the same reference numerals. As shown in the figure, in the cable connection part of this embodiment, washer locking grooves 8 are provided at both ends of the cable through hole 5 of each end plate 3, and each washer locking groove 8 is provided with a sealing washer made of rubber or the like. 9 is fitted and locked. Sealing washer 9
has a 7 flange portion 9B at one end of the cylindrical washer body 9A, and a cut 9 at one location in the circumferential direction of the washer body 9A.
C is provided so that it can be adapted to the outer diameter of the cable 6 by adjusting the circumference. The sealing washer 9 has its flange portion 9B fitted into the washer locking groove 8 to stabilize its posture and prevent it from coming off. A fastener 10 and a fastening bolt 1 are attached to the end plate 3 divided into two.
1 are integrally connected. The cables 6 on both sides are connected to each other within the junction box 1 by a connecting fitting 12. Junction box 1 is also divided into two parts, and sealing material 1 is applied to the joint.
3 is interposed therebetween, and is integrated with a bolt 14 and a nut 15. The core wires of the cable 6 are mutually connected within the junction box 1 at a core wire connection portion 16. The junction box 1 is filled with gas.

In such a cable connection part, the sealing material 7 between the inner periphery of the end plate 3 and the outer periphery of the cable 6 is dammed by sealing washers 9 arranged at both ends, so that the inside of the junction box 1 is dammed. Cold flow will no longer occur even if pressure is applied.

In the above embodiment, the case where one cable 6 passes through the end plate 3 is explained, but the end plate 3 is connected to the cable 6.
Of course, the present invention can also be applied to a cable connection portion through which a plurality of cables pass through.

[Effect of the invention] As explained above, in the cable penetration part according to the present invention,
Since the sealing washers are secured to both ends of the cable through hole in the end plate, the sealing material interposed between the end plate and the cable is blocked by the sealing washers, and the gas pressure inside the junction box is applied. This has the effect of preventing cold flow of the sealing material and maintaining the seal stably for a long period of time. Moreover, using a sealing washer in this manner is very useful in practice, since even if the cable size changes, the sealing washer can be adapted to the cable size instead of replacing the end plate.

[Brief explanation of the drawing]

Fig. 1 is an enlarged cross-sectional view of the main part showing one embodiment of the cable connection part according to the present invention, Fig. 2 (^) (8) is a side view and front view of the sealing washer used in this embodiment, and Fig. Figure 3 is a perspective view showing the installation process of the end plate in this embodiment;
5 and 5 are a longitudinal sectional front view of the upper half and a right side view thereof showing an embodiment of the cable connecting portion of the present embodiment, and FIG. 6 is a longitudinal sectional view of the main part of the conventional cable connecting portion.

Claims (1)

[Claims] A plurality of cables to be connected are drawn into the junction box, and an end plate is airtightly attached to the cable inlet of the junction box for pulling the cables into the junction box, and an end plate is airtightly attached to the cable through hole of the end plate and the cable. In the cable connection portion where sealing is performed with a sealing material interposed between the two, sealing washers for damming the sealing material are respectively engaged in the washer locking grooves at both ends of the cable through hole of the end plate. A cable connection section characterized in that it is stopped.