JPH083323B2 - Communication cable jacket grip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention protects a connection part of a communication cable from external forces acting on the connection part of the communication cable, such as vibration, external pressure, tension, compression, etc. The present invention relates to an outer cover gripping portion for fixing the.

(Prior Art) In the communication cable, in order to protect the connection portion of the communication cable from the cable moving force generated by the external force such as vibration external pressure, tension, compression, which acts on the connection portion,
It is necessary to fix the cable jacket.

Therefore, as a conventional cable fixing method, the cable jacket 3 is divided into six or four parts as shown in the sectional view of the grip portion of the conventional communication cable in FIG. 4, and the cable jacket 3 is separated from the cable core 5. Peel off and insert the upper and lower split inner grip fitting 4 between the cable jacket 3 and the cable core 5. Furthermore, if necessary, a grip metal fitting spacer 2 for adjusting the outer diameter of the cable is sandwiched on the outer circumference of the cable jacket 3, and the outer grip fitting metal fitting 1 is tightened with a bolt from the outer circumference to grip the cable. As shown in the figure, they are integrally connected to each other by a connecting rod 6.

(Problems to be Solved by the Invention) In the conventional outer sheath gripping portion of the communication cable, since there are a wide variety of cable connection configurations and cable sheaths to be applied, it is possible to cope with each connection configuration and various cable outer diameters. There are a large number of parts, each with 12 types of external grips, 24 types of internal grips, and 10 types of gripping spacers. Therefore, the price of each component increases, which is an obstacle to lowering the cost of the cable grip component, and when forming the jacket grip, divide the cable jacket into six equal parts or Since it is necessary to vertically divide the cable into four equal parts in the longitudinal direction of the cable and insert the internal grips, a lot of space is needed to form the grips, and the work also takes time. There is a problem in that the capacity in the connection case that protects the connection portion of the communication cable cannot be effectively used because of the structure in which they are integrally connected to each other via the connecting rod.

(Problems to be Solved by the Invention) The present invention has a small number of parts, is inexpensive, is easy to form a grip portion, has good workability, and has a simple structure, and does not require a large space for mounting the grip portion. To provide.

(Means for Solving the Problems) The present invention is not limited to an arc-shaped metal plate having projections on the surface of the communication cable in contact with the cable jacket, and a state of being completely fixed to the metal plate. A tightening fitting made of a screw that can be freely rotated, a screw hole for mounting the screw of the tightening fitting, and a groove of an end face plate that is a member for protecting the connection portion of the communication cable. And a holding metal fitting having an upper and lower split structure and having a protrusion.

(Operation) The outer cover gripping portion of the communication cable having the above-described configuration operates as follows.

Attach the tightening bracket to the grip fitting by screwing the screw attached to the grip into the screw hole of the grip fitting.

Cover the cable with the two-upper and lower-grip structure with the tightening metal fittings attached, and tighten with the bolts.

Tighten the screw of the tightening bracket with a screwdriver that regulates the torque, and attach the arc-shaped metal plate with the demon-shaped projection to
Fix the jacket by cutting it into the cable jacket.

The tightening metal fittings have the same effect as the conventional internal gripping metal fittings and gripping metal fitting spacers, eliminating the need for internal gripping metal fittings and gripping metal fitting spacers, which required many types of parts, and reducing the number of parts compared to conventional products. The cost, article management cost, and design operating cost can be reduced, and the simple structure facilitates the work of forming the grip portion, thereby improving the work efficiency.

In addition, since the gripping metal fittings do not require the outer gripping metal fittings that required many types of conventional parts, and the number of parts is smaller than in the past, it is possible to reduce manufacturing costs, article management costs, and design operating costs. In addition, since it has a structure that has a protrusion that fits into the groove of the end face plate that is a member for protecting the connection part of the communication cable, the conventional connecting rod that integrally connects the gripping metal is unnecessary. Therefore, it is possible to effectively use the capacity in the connection case that protects the connection portion of the communication cable.

In addition, compared to the conventional method of using the internal gripping metal fitting, the gripping metal spacer and the outer gripping metal fitting, since the method is a method of directly gripping the cable jacket with a tightening metal fitting having a simple structure, temperature expansion and contraction, creeping, etc. It is possible to secure a gripping force that can withstand the cable moving force.

(Embodiment) FIG. 1 to FIG. 3 are explanatory views of an embodiment of an outer grip portion of a communication cable of the present invention.

1 (a) and 1 (b) are views showing the constitution of the embodiment, FIG. 1 (a) is a sectional structural view, and FIG. 1 (b) is FIG. 1 (a).
3 is a cross-sectional view taken along line AA ′ in FIG.

In FIGS. 1 (a) and 1 (b), 9 indicates a tightening fitting. This fastening member 9 is an arc-shaped member made of stainless steel or the like having a demon-shaped projection 91 on the surface in contact with the cable jacket, and in order to make this member bite into the cable jacket,
It is composed of a member 92 made of stainless steel or the like, which is attached to the member, and is threaded. If a few fasteners are used to hold the cable jacket at one place, temperature expansion and contraction, creeping, etc. A gripping force that can sufficiently withstand the cable moving force is obtained. Moreover, 7 shows a gripping metal fitting.

The holding metal fitting 7 is a member having a two-split structure made of stainless steel or the like, and has several screw holes 71 for attaching the tightening metal fitting 9 and an end face plate which is a member for protecting the connection portion of the communication cable. It is configured to have a protrusion 72 that engages with the groove 101 of 10.

With the configuration of this embodiment, several fastening fittings 9 are attached to the grip fitting 7. Next, the gripping metal 7 is put on the cable 11 and tightened with the bolt 8. Next, the screws 92 attached to the several fasteners 9 are evenly tightened with a screwdriver or the like that specifies the tightening torque, and the arc-shaped member having the ogre-shaped projections 91 is cut into the cable jacket, The cable 11 can be gripped.

2 (a) is a front view of the grip 7 and FIG. 2 (b).
FIG. 4 is a sectional view taken along line AA ′ and BB ′ of FIG.

FIG. 3 (a) is a front view of the tightening fitting 9, and FIG. 3 (b).
[Fig. 6] is a view of the tightening fitting 9.

Reference numeral 91 in FIG. 1 denotes a protrusion, and the shape thereof is not particularly limited to this embodiment, and may be any shape that cuts into the cable jacket. It should be noted that the arc-shaped member having the ogre-shaped projection 91 of the tightening fitting 9 is selected to have 3 to 4 types of shapes corresponding to the outer diameter of the cable, so that the projection 91 can be securely attached to the outside of the cable. It is possible to obtain a gripping force that can sufficiently withstand the cable moving force such as biting into the object, temperature expansion and contraction after cable laying, and creeping.

(Effects of the Invention) As described above, the outer sheath gripping portion of the communication cable of the present invention includes the fastening metal fitting for fastening and fixing the cable outer sheath, and the gripping metal fitting for attaching the fastening metal fitting. The tightening metal has a structure in which an arc-shaped metal plate having an oval projection is tightened with a screw attached to the metal plate so as to bite into the cable jacket and grip the cable.

Further, the gripping metal has a structure that engages with the groove of the end face plate which is one member for protecting the connection part of the communication cable, and a tubular connection case covering the end face plate and the connection part of the cable is used. The outer jacket grip portion of the cable is integrally connected via the.

From this, the number of parts is greatly reduced compared to the conventional cable grip, and with the simplification of the grip structure,
The manufacturing cost can be reduced and the workability for forming the grip portion can be improved, and the space for forming the grip portion can be minimized.

[Brief description of drawings]

1 (a) and 1 (b) are configuration diagrams of the outer cover gripping portion of the communication cable, FIGS. 2 (a) and 2 (b) are schematic structural views of the gripping metal fittings, and FIGS. 3 (a) and 3 (b) are FIG. 4 is a cross-sectional view of a conventional communication cable grip portion, and FIG. 5 is a configuration diagram of a conventional communication cable grip portion. 1 ... External gripping metal, 2 ... Gripping metal spacer 3 ... Cable jacket, 4 ... Internal gripping metal, 5 ... Cable core, 6 ... Connecting rod, 7 ... Gripping metal, 71 ... Screw hole 72 ... … Protrusion, 8 …… Bolt 9 …… Clamping fitting, 91 …… Protrusion 92 …… Screw, 10 …… End plate 101 …… Groove, 11 …… Cable

Claims (1)

[Claims] 1. An arc-shaped metal plate for protecting a connection part of a communication cable, the arc-shaped metal plate having a projection in a devil pattern on a surface of the communication cable in contact with the cable jacket, and the metal plate. A fastener for fastening the screw of the fastener, and a screw hole for attaching the screw of the fastener and a portion for protecting the connection portion of the communication cable. A grasping part for a communication cable, comprising: a grasping metal member having a vertically split structure having a protrusion that engages with a groove of an end plate that is a member.