JP2668458B2 - Handling method of cable with support wire in connection terminal box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a cable with a supporting wire in a connection terminal box of a plastic communication cable such as CCP.

[0002]

2. Description of the Related Art For example, as shown in FIG. 8, a plastic communication cable P such as a CCP is formed by forming a plurality of tape winding layers b such as a rough tape and a shield layer e on the outer periphery of a cable core a. The outer cover d is provided together with the support line c. The cable core a usually has a pair of communication lines of 10
Pairs are collected into subunits, and the required number is bundled.

A connection terminal box is used for linear connection, branch connection, and branching to the subscriber's house of the communication cable P. As a cable processing method in this connection terminal box,
The present applicant has proposed a technique described in Japanese Patent Application Laid-Open No. 2-228212. This technique will be briefly described with reference to FIGS. 5 and 7. First, a communication cable P to be connected is drawn into a connection terminal box A, and a neck between a cable body p and a support wire c is connected. The terminal box A is torn apart slightly longer than the entire length in the lengthwise direction, and the cable holding member 2 of the cable body p is cut.
The outer sheath d is peeled off, and the rubber bushing 5 is fitted to the peeled end of the outer sheath d of the cable body p through the cut 7.

Next, a holding member 2 screwed to both ends of a base 1 provided with a plurality of half punch holes 1a,
A reinforcing rod 8 is provided between the two members, and the cable body p and the support wire c are clamped and fixed by holding members 2 and 2, and an end wall member 10 is tenon-fitted to both ends of the base 1 as shown in FIG. hand,
Cover 12 is covered. The cover 12 is fixed by locking a lock member 8a in a groove (not shown) on the inner surface thereof. In the figure, r is a connection line of the shield layer e, and after connecting to the shield layer e, the tape s is wound around the connection portion. This connection work is performed before or after the cable P is supported by the holding member 2. For details of this processing method, see the above-mentioned publication.

[0005] In this technique, when an inner clamp 9 is interposed as shown in the figure, the support line c is positioned by the inner clamp 9. Therefore, the support line c does not move to the rubber bushing 5 side due to the tightening of the screw 9 ′.

However, today, the inner clamp 9
Is not used, and in such a case as shown in FIG. 6, the supporting line c moves like a chain line with the tightening of the screw 9 ', and is not sufficiently held, so that it cannot serve as the supporting line c. Has become a problem at the work site.

In view of the above points, the present invention has an object to eliminate the movement of the support line when the screw is tightened.

[0008]

In order to solve the above-mentioned problems, according to the present invention, when screwing a cable holding member, a ridge is provided in an axial direction of an outer peripheral surface of a rubber bushing, and the ridge is supported. It was applied to the lower surface of the wire and the support wire was kept in the required position.

[0009]

According to the present invention having such a configuration, since the support wire is maintained at a required position, the cable is securely clamped and supported by the cable holding member.

[0010]

Embodiment 1 In this embodiment, a rubber bushing 5 is provided with a ridge 6a.
Is formed to prevent the displacement of the support line c.
As shown in FIG. 3, the rubber bushing 5 has a cylindrical shape having ribs 6 on both sides in the same manner as in the related art, a part of the outer periphery is cut off, the thickness is reduced, A notch 7'is made at each side, and notches 7'at regular intervals are formed on both sides thereof. When the holding cable P becomes thinner, the end 5 ′ is cut off along the notch 7 ′ so that the inner diameter of the bushing 5 matches the diameter of the cable P (see FIG. 3), that is, the notch 7 ′ can be reduced.

On the outer peripheral surface on the opposite side of the thin portion (the portion where the notch 7 'is formed), a longitudinal ridge 6a extending over both ribs 6 is provided.
Are formed. The height of the ridge 6a is such that, when the end 5 'is not cut off, the rubber bushing 5 is fitted to the cable body p which fits the inner diameter, and when the rubber bushing 5 is fitted to the holding member 2 and clamped as described later, the upper surface thereof is raised. It comes into contact with the support line c at an appropriate position. For this reason, when the end 5 'is cut off and its diameter is reduced, there are cases where the height of the ridge 6a is insufficient or conversely too high. If it is too high, it can be absorbed to some extent by the elasticity of the ridges 6a, but it may be lowered by scraping the upper surface. On the other hand, in the case where the height is not enough, the height may be made higher than the usual appropriate height, and the upper surface thereof may be cut to an appropriate height at the site. The rib 6 can be omitted.

Further, as shown in Table 1 below, four types of rubber bushings (S, M, L, special L) are prepared, and the rubber bushings 5 are selectively used according to the size of the cable P to be connected. For the intermediate size cable P, the notch 7'is used as a mark, and the end 5'is cut off to fit the size.

[0013]

[Table 1]

Therefore, as in the prior art, after finishing the processing such as stripping of the jacket d, as shown in FIG. 1, this rubber bushing 5 is interposed in the cable main body p and is directly connected to the holding member 2. 2, the screw 9 'is tightened, and the rubber bushing 5 is firmly pressed against the cable body p, so that slippage between the rubber bushing 5 and the cable body p is prevented,
The cable P is supported by the cable holding member 2. At this time, as shown in FIG. 2, the support line c does not move toward the rubber bushing 5 due to the ridge 6 a, but is smoothly held and firmly supported by the holding member 2.

In the above embodiment, when there is a large difference between the inner diameter of the holding portion 2a of the cable holding member 2 and the outer diameter of the rubber bushing 5, as shown in FIG. You should hold it. At this time, the sizes of the rubber bushings 5 and 5a to be overlapped are appropriately selected from the above-mentioned four types. If the rib 6 is in the way, it may be cut. The same applies when there is a ridge 6a. Further, a rib-free one without ribs 6 and ridges 6a may be prepared.

[0016]

As described above, according to the present invention, since the supporting wire is screwed while maintaining the supporting wire at the required position, the supporting wire is
Without being moved, it is surely held and supported.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining the inside of the first embodiment.

FIG. 2 is a right side view of the main part cut away.

FIG. 3 is a perspective view illustrating the use of the rubber bushing.

FIG. 4 is an explanatory view of using a rubber bushing.

FIG. 5 is a perspective view for explaining the inside of a conventional example.

FIG. 6 is a right side view of a main part cut in a conventional example.

FIG. 7 is an external view of a connection terminal box.

FIG. 8 is a sectional view of a communication cable.

[Explanation of symbols]

 a cable core b tape winding layer c support wire p cable body d jacket (laminated sheath) e shield layer P cable A connection terminal box 1 base 1a half punch hole 2 cable holding member 5, 5a rubber bushing 6 rib 6a ridge 7 Notch 7 'Notch 8 Reinforcement rod 8a Lock member 9' Screw 10 End wall member 12 Cover

Continued on the front page (72) Inventor Yasuhiko Ota 2-3-1 Iwatacho, Higashiosaka City Inside Tatsuta Electric Wire Co., Ltd. (72) Inventor Kihachi Onishi 23-13-1 Iwatacho, Higashiosaka City Inside Tatsuta Electric Wire Co., Ltd. (56) References Japanese Unexamined Patent Publication No. 2-228212 (JP, A) Actual Opening 1-66151 (JP, U) Actual Opening Sho 63-202442 (JP, U)

Claims (1)

(57) [Claims] And 1. A base 1 provided with a plurality of half-punch hole 1a, a cable holding member 2, 2 pairs each clamping the erected cable P to near both ends portions of the base 1, the ends cable A reinforcing rod 8 provided between the holding members 2, an end wall member 10 having an opening through which the cables P fitted to both ends of the base 1 penetrate, the pair of cable holding members 2 and 2, Cable P to be held
And a cover 12 surrounding the base 1 along with the end wall member 10, the reinforcing rod 8, and the like,
When the cable P is connected to the connection terminal box A, the communication cable P to be connected is drawn into the connection terminal box A, and the sheath d between the cable holding members 2 of the cable P is peeled off. Then, the neck between the cable body p and the support wire c is cut off slightly longer than the entire length of the connection terminal box A in the longitudinal direction, and the rubber bushing 5 is cut into the cut end 7 at the stripped end of the jacket d of the cable body p. The cable body p with the rubber bushing 5 and the support wire c are directly sandwiched between the pair of cable holding members 2 and 2 to maintain the required position of the support wire c in the axial direction of the rubber bushing outer peripheral surface. The lower surface of the support wire c is brought into contact with the ridge 6a, and the pair of cable holding members 2 and 2 are tightened with screws 9 ', so that the cable main body p and the support wire c are supported in the connection terminal box. Cable processing method with equity lines.