JPH03697Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shielded cable connection structure of an outdoor electric wire connector used for a cable having a shield layer.

[Prior Art] The following two methods are used to connect a cable having a shield layer to a wire connector.

1 Take the shield layer out of the connector, clamp it together with the cable using a clamp saddle, etc., and connect and secure it with screws, etc.

2. Hold the cable with a saddle-shaped plate, etc. on one inner surface of the end bell, which is divided so that the cable can be inserted from the top and bottom, and connect and fix it with screws, etc.

[Problems to be solved by the invention] In the shield layer connection structure according to the conventional technology, when connecting the shield layer outside the connector or inside the connector, waterproofing is required because the end bell is divided. In this case, it was difficult to form a sealed structure and there was no dripping.

[Means for solving the problem] The present invention was devised in order to eliminate this problem in view of the above-mentioned circumstances.In the electric wire connector, a convex groove is provided around the inner surface of the end bell on the cable insertion port side. At the same time, a blade made of a conductive elastic material, such as copper that maintains elasticity, is fitted into this groove, and an electric wire having a shield layer exposed at a predetermined position on the connection side is pressed into contact with the blade by the elasticity of the blade. In the shielded cable connection structure of the connector, the protective coating at the tip of the cable is removed to expose the shield layer, and the elasticity of the blade fitted into the groove inside the end bell presses the shield layer, simplifying both structure and operation. Furthermore, since the cable is made of copper or the like and an elastic body is inserted into the cable through the insertion port, the cable can be sealed using a gasket, which is intended to provide a waterproof effect.

[Example] Reference numeral 1 denotes an end bell, at one end of which a barrel 4 containing an insulator 3 equipped with a support post 2 is removably fixed with a screw and a set screw, and at the other end an insertion port 5,
A screw 7 for screwing a clamp nut 6 is provided on the outer periphery. A tapered surface 8 is formed on the inner edge of the insertion port 5, and a groove 10 into which a blade 9 is fitted is provided around the inner edge of the tapered surface 8.

The barrel 4 is provided with a flange 4a on its outer periphery, and a flange 11a on the inside of the coupling nut 11.
Although not shown in the drawings due to the relationship with the receptacle, it is screwed to the receptacle.

The blade 9 is provided with, for example, a plurality of elastic pieces 9b which are branched by notched grooves 9a at regular intervals from the edge of one end of a single elongated copper plate to approximately the center position, and the elastic pieces 9b are curved. The end bell 1 is then folded back to form an elastic piece 9b so as to maintain its elasticity, and this blade 9 is cut to match the concave groove 10 of the end bell 1 and fitted into an annular shape.

The cable 12 has an inner conductor 12a and an inner conductor 1.
It consists of an insulating separator 12b applied to 2a, a shield layer 12c of, for example, copper wire braid, provided around it, and a protective coating 12d covering this.The tip of this external protective coating 12d is removed to form the shield layer 12c.
At the same time, the tip of the shield layer 12c is folded back to the outside and fixed by appropriate means, so that the elastic piece 9b of the blade 9 can be pressed against it and energized.

A gasket 13 is fitted into the tapered surface 8 of the insertion port 5 of the end bell 1, and the cable 12 inserted from the insertion port 5 is crimped onto the outer periphery of the protective coating 12d of the cable 12 by tightening the clamp nut 6 to waterproof it. ing. The clamp nut 6 is provided with a clamp saddle mechanism 14 to fix the inserted cable 12.

FIG. 3 shows another embodiment, which is almost the same as the first embodiment, except that the blade mounting tube 15 to which the blade 9 is mounted is separated from the end bell 1.

[Operation] As is clear from the above configuration, the embodiment of the present invention has the following features:
Insert the cable 12 from the insertion port 5 of the end bell 1, and remove the external protective coating 1 on the connection end side of the cable 12.
Shield layer 12c with 2d removed and braided with copper wire
, and fold it outward and fix it,
Furthermore, after connecting the internal conductor 12a of the cable 12 to the socket 2 of the barrel 4, the barrel 4 is screwed into the end bell 1 and fixed with a set screw. The elastic pieces 9b are brought into contact with each other.
After the cable 12 is pressed and electrically connected, the packing 13 is tightened with the clamp nut 6, and the packing 13 is crimped onto the cable 12, and the cable 12 is fixed with the clamp saddle 14. The end bell 1 thus constructed is connected to a receptacle (not shown) for grounding.

[Effects] As described above, the present invention is provided with a detachable barrel having a socket at one end, and an insertion opening for inserting a cable at the other end, and an end bell provided with a cable clamp means on the insertion side of the insertion plug. In a wire connector that is connected via a coupling nut to a receptacle provided with an end bell, a concave groove is provided around the inner surface of the end bell on the insertion port side, and a notched groove is provided in which a conductive elastic material, such as elasticity, is provided in the concave groove. A shield in an electric wire connector characterized in that blades made of copper or the like separated by a wire are fitted and the blades are pressed into contact with the cable shield layer exposed at the tip of the connection side by the elasticity of the elastic pieces of the blades. With the cable connection structure, the cable shield layer and each elastic piece provided on the blade can be easily and securely connected and conductive without any trouble. Furthermore, if necessary, it can also exhibit a completely waterproof effect.

[Brief explanation of drawings]

The drawings show an embodiment of the shield connection structure in the electric wire connector according to the present invention, in which Fig. 1 is a partially sectional side view, Fig. 2 is a perspective view showing a part of the blade, and Fig. 3. FIG. 3 is a partially sectional side view of another embodiment. 1... End bell, 2... Receptacle, 3... Insulator, 4... Barrel, 5... Insertion port, 6... Clamp nut, 7... Screw, 8... Tapered surface, 9...
...Blade, 9a...Notch, 9b...Elastic piece, 1
0... Concave groove, 11... Coupling nut, 11
a...Flange, 12...Cable, 12a...
Internal conductor, 12b...insulating separator, 12c...shield layer, 12d...protective coating, 13...packing, 14...clamp saddle mechanism, 15...blade mounting tube.

Claims (1)

[Scope of utility model registration request] In an electric wire connector used for connecting a cable having a shield layer, a concave groove is provided around the inner surface of the end bell on the cable insertion port side, and within this concave groove, a conductive plate is branched into a plurality of notched grooves from one side edge of the conductive plate to provide elasticity. A shielded cable in an electric wire connector, characterized in that an elastic body having two pieces is fitted, each elastic piece of the elastic body is brought into pressure contact with the exposed shield layer of the cable, and the insertion opening side is further sealed with a packing. Connection structure.