JPS6029826Y2 - Connection structure between coaxial cable and connector - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a structure in which coaxial cables are connected by a bent coaxial connector.

Conventionally, there are many known examples of connectors for connecting coaxial cables.

Among these, in the case of a coaxial connector that requires a bending part, the connection between the connector and the coaxial cable tends to be complicated and is likely to be expensive.

For example, when used in wiring for televisions, etc., it is required to be able to supply in large quantities, to be particularly low-priced, and to have a simple connection structure between the coaxial cable and the coaxial connector.

In this case, if the commonly used M type, BNC type, N type, C type, etc. are reused, the performance of the connector itself will be satisfactory, but the price and connection workability will be unsatisfactory. .

This idea was made based on the above background, and improved the vinyl plug jack so that it could be used to connect the bent part of the coaxial cable, thereby reducing costs and improving the workability between the connector and the coaxial cable. The purpose is to increase the

This invention will be explained below based on embodiments shown in the drawings.

1 to 3 show an embodiment of this invention, in which reference numeral 1 is a pin plug, reference numeral 2 is a pin jack, and reference numeral 3 is a coaxial cable.

A bent tube 5 is integrally provided on the base end side of the plug shell 4 of the pin plug 1, and the pipe hole 5a of the bent tube 5 is approximately 90' with respect to the axial center line of the plug shell 4.
At the same time, the tip of the pipe hole 5a is widened into a trumpet shape, and the inner wall surface 5b of the pipe hole 5a, which is the outside of a part of the corner, is oriented toward the axial center line direction of the plug shell 4 and communicated with it. Furthermore, a small diameter portion 5c whose outer diameter is slightly narrowed is formed at the base end of the bent tube 5.

On the other hand, a stepped portion 4a is formed on the inner wall of the plug shell 4, and a bent portion 4b that can protrude inward is provided in a part of the wall of the plug shell 4 near the stepped portion 4a. The tip portion is divided into a plurality of parts and serves as a shield contactor 4c for connecting to the pin jack 2.

Further, a disc-shaped insulating plate 6 is provided inside the plug shell 4 at the stepped portion 4.
The insulating plate 6 is fitted to the position a, and the insulating plate 6 has a center hole 6"a
is formed, and a pipe-shaped core wire connector 7 is formed in this center hole 6a.
is fitted.

A mounting tube 7a that is inserted into the center hole 6a of the insulating plate 6, expanded, and caulked is provided at the base end of the core wire connector 7, and a flange plate 7b is provided for positioning the insertion of the attachment tube 7a. It is being

Further, the tip of the cable connector 7 is rounded, and as a result, the tip of the pipe hole 7c has a narrowed shape, and a part of the wall of the cable connector 7 is located in the pipe hole 7c. A stopper 7d is provided to project inward.

. Furthermore, the one designated by the reference numeral 8 is a crimp ring whose distal end is slightly widened and whose proximal end is slightly narrowed, and is made of a plastically deformable metal such as a copper alloy.

Through these parts, the core wire 3a of the coaxial cable 3 is electrically connected to the core wire connector 7, and the shield layer 3c of the coaxial cable 3 is electrically connected to the bending tube 5, respectively.

That is, the core wire connector 7 is inserted into the center hole 6a of the insulating plate 6, the mounting tube 7a is expanded, and the core wire connector 7 is fixed by caulking as shown in FIG. is inserted into the plug shell 4 up to the stepped portion 4a, and these are fixed by bending each bent portion 4b inward to make it protrude.

Next, the coaxial cable 3 (core wire 3 as
insulation coating 3b and shield layer 3C exposed)
into the bent tube 5 of the pin plug 1.

At this time, the core wire 3as and the insulation coating 3b are smoothly guided to the mounting tube 7a of the core wire connector 7 by the inner wall surface 5b.

When the coaxial cable 3 is pushed into the pin plug 1, the core wire 3
a protrudes from the core wire connector 7 to the outside, and the insulation coating 3
The tip of b hits the stopper 7d and is positioned.

In accordance with this state, the core wire 3a protruding from the core wire connector 7 is cut off, and the shield layer 3c is spread to cover the outer peripheral surface of the small diameter portion 5C of the bent tube 5.

Next, the core wire 3a and the core wire connector 7 are soldered with solder 9, and the coaxial cable 3 is covered with a crimp ring 8 and crimped as shown in FIG.

As a result, the shield layer 3c comes into close contact with the small diameter portion 5c, and in addition, this close contact portion is covered with the crimp ring 8 that contacts the bent portion 5, resulting in a double shielded structure.

Further, the core wire 3a from which the shield layer 3c has been removed is shielded by the plug shell 4 and the bent tube 5.

Note that reference numerals 2a and 2b in the figure indicate an outer contact and a center contact that are electrically connected to the shield contact 4c and the core wire connector 7 of the pin plug 1, respectively.

On the other hand, FIG. 4 shows another embodiment of the fixed part between the plug shell 4 and the insulating plate 6, in which the plug shell 4 is made to protrude inward to form a bent part 4b, and the fitting part of the insulating plate 6 is It is then fixed by the stepped portion 4a and the bent portion 4b.

As explained above, according to this invention, since the basic configuration is a pin plug and a pin jack, the structure is simple and costs can be reduced.

In addition, since the connection with the pin plug can be made by inserting the core wire and shield layer and fixing it with solder and a crimp ring, workability can be improved even when a bent part is required when connecting the coaxial cable. It has the effect of making it possible.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the main part showing an embodiment of this invention, Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1, and Figure 3 is a cross-sectional view taken along the line ■-■ in Figure 1. FIG. 4 is a longitudinal sectional view of the main part showing another embodiment of the fixing portion between the plug shell and the insulating plate. 1... Pin plug, 2... Pin jack, 3... Coaxial cable, 3a... Core wire, 3b... Insulation coating, 3c... ...Shield layer, 3d...Outer cover, 4...Plug shell, 4a...Step part, 4b...Bent part, 4c ...shield contactor, 5 ... bending tube, 5a ... pipe hole, 5b ...
...Inner wall surface, 5c...Small diameter part, 6...
Insulating plate, 6a... Center hole, 7... Core wire connector, 7a... Mounting tube, 7b... Flange plate, 7c... ...Pipe hole, 7d...Stopper, 8...Crimp ring, 9...Solder.

Claims (1)

[Scope of utility model registration request] In a structure in which a coaxial cable is connected by a connector consisting of a plug and a jack, the tip of the insulated core wire of the coaxial cable is inserted into a bent tube that communicates with the plug shell, and the center hole of the insulating plate is fitted into the plug shell. At the same time as fitting a pipe-shaped core wire connector into the core wire connector, inserting the insulated core wire of the coaxial cable into the pipe hole of the core wire connector and soldering a part of the plug shell wall inwardly. A connection structure between a coaxial cable and a connector, characterized in that the insulating plate is fixed by bending, and the shield layer of the coaxial cable is covered with a crimp ring to crimp the shield layer to the outer peripheral surface of the bent tube.