JPH0127570Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a structure in which a clamp fitting is directly connected to a cable shielding layer and taken out as a ground terminal.

(Technical background of the invention and its problems) In general, in a cable with a shielding layer, the method of grounding the shielding layer is to remove a step at the end of the cable and attach a grounding terminal to the exposed shielding layer. There are two methods: one is to connect the cable, and the other is to ground the cable by fixing it to equipment or a wall using a clamp.

Among these, when using clamp fittings,
Conventionally, a method has been adopted in which a predetermined portion of the cable sheath is peeled off to expose the shielding layer, a clamp fitting is fitted onto the shielding layer, and the ends of the fitting are tightened and fixed with screws or the like.

However, with this method, not only is it time consuming to strip the sheath and the workability is poor, but also there are cases where the contact between the clamp fitting, which is the grounding terminal, and the shielding layer is insufficient, resulting in incomplete grounding.

(Purpose of the invention) The present invention was made to solve these problems.It is easy to install, has good workability, and can ensure reliable grounding. The purpose is to provide.

(Summary of the invention) The structure for taking out the ground terminal of the cable shielding layer of the invention is to provide two linear incisions parallel to each other in the longitudinal direction at a predetermined part of the sheath, and to connect the sheath and the bottom between them. It is characterized in that a clamp fitting is inserted between the shielding layer on the side and electrically contacting the shielding layer.

Therefore, in order to make more complete electrical contact with the shielding layer, the clamp fitting should have a shape in which the curved part inserted between the sheath and the shielding layer slightly protrudes inward. is desirable.

(Embodiments of the invention) Examples of the invention will be described below based on the drawings. FIG. 1 is a perspective explanatory view of an embodiment of the present invention.

The cable designated by numeral 1 in this figure is
A cable core 2 made of twisted plural core wires, a presser tape 3 wound on the cable core 2, and a presser tape 3
It consists of a braided shielding layer (hereinafter simply referred to as a braid) 4 provided on the braid 4 and a sheath 5 covering the braid 4. Near the end of the cable 1 having such a structure, the sheath 5 is provided with two linear notches 6 extending parallel to each other in the length direction and reaching to the back side.
A clamp fitting 7 having the shape shown below is inserted through the space.

That is, as shown in FIG. 2, the clamp fitting 7 has a shape in which a part of the curved part slightly protrudes inward to form a flat part 8, and the flat part 8 is connected to the sheath 5 between the above-mentioned notches 6. It is fitted onto a predetermined portion of the cable 1 while being inserted between the cable 4 and the braid 4.

According to the structure in which the clamp fitting 7 configured as described above is installed, the flat part 8 of the clamp fitting 7 is inserted between the sheath 5 and the braid 4, and this part is completely electrically connected to the braid 4. Since they are in contact with each other, the braid 4 can be reliably grounded simply by tightening and fixing both ends of the clamp fitting 7 to the device body, wall surface, etc. using screws or the like.

In addition, it is not necessary to peel off the entire circumference by simply making the notch 6 in the sheath 5, making the construction work easy.

(Effects of the invention) As is clear from the above description, according to the invention, the shielding layer can be grounded more reliably than with conventional grounding terminal extraction structures of this type, and the time required for construction is significantly reduced. can be shortened to

[Brief explanation of the drawing]

Fig. 1 is a perspective explanatory view of one embodiment of the present invention;
The figure is a perspective view of a clamp fitting used in an example. 1... Cable, 4... Braid, 5... Sheath,
6...notch, 7...clamp fitting.

Claims (1)

[Claims for Utility Model Registration] 1. In a cable that is formed by providing a shielding layer on the outside of a cable core in which a plurality of core wires are twisted together and a sheath provided on top of the shielding layer, a cable having a shielding layer provided on the outside of the cable core and a sheath provided on the shielding layer, in which a predetermined portion of the sheath is provided with long lines parallel to each other. Two linear cuts are provided in the horizontal direction, and a clamp fitting is inserted between the sheath between these cuts and the shielding layer in electrical contact with the shielding layer. Cable shielding layer ground terminal extraction structure. 2. The grounding terminal extraction structure for a cable shielding layer according to claim 1, wherein the clamp fitting has a shape in which a curved part inserted on the lower side of the sheath between the notches projects slightly inward.