JPH027459Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a connection device for an antenna signal supplier for connecting a coaxial cable for antenna signal supply to other electronic equipment.

In a conventional antenna block, for example, the connection of a coaxial cable to a shield case having a feedthrough capacitor is as shown in FIG. electrode 2
2c to the one electrode 22b of the feedthrough capacitor 22 by soldering, and the other end of the cylindrical sleeve 21 is inserted between the inner insulator 24a and the outer conductor 24b of the coaxial cable 24, The ring 25 that fits around the outer periphery of the outer conductor 24b is caulked.

However, when the ring 25 that fits around the outer periphery of the outer conductor 24b is caulked in this way, the inner insulator 24a of the coaxial cable 24 is locally mechanically deformed, and the center conductor 24d, which is made of brittle material, is damaged. In addition, there is a serious defect in that the function of the coaxial cable 24 for supplying high-frequency signals is degraded, and since only the position of the outer conductor 24b is caulked with the ring 25, the coaxial cable to the cylindrical sleeve 21 is There was a problem that the cable 24 could not be firmly connected.

In view of the above points, it is an object of the present invention to provide a connecting device for an antenna signal supply device that does not have mechanical or high frequency adverse effects on the internal insulator of a coaxial cable and can firmly connect a coaxial cable to a cylindrical sleeve. With the goal.

Hereinafter, an illustrated embodiment in which the present invention is used for connection between a coaxial cable and a feedthrough capacitor will be described.

In Figures 1 and 2, 1 is a coaxial cable, 2 is a feedthrough capacitor, and the coaxial cable 1
The connection between the feedthrough capacitor 2 and the cylindrical sleeve 3
and a crimping element 4.

Thus, in the coaxial cable 1, an inner insulator 5 surrounding a central conductor (not shown), similar to the conventional one, is covered with an outer conductor 6 formed from a braided wire, and this outer conductor 6 is further covered with an outer outer conductor made of an insulating material. It is formed by being covered with a covering body 7.

The feedthrough capacitor 2 is formed in a donut shape, and an electrode 8 electrically connected to the cylindrical sleeve 3 is provided on one side of the capacitor 2, and an electrode 8 electrically connected to the shield case (not shown) is provided on the other side. A connected electrode 9 is provided.

Further, the cylindrical sleeve 3 has an enlarged diameter portion 10 ₁ formed at one end of the sleeve body 10 passing through the feedthrough capacitor 2 , and is connected to the enlarged diameter portion 10 ₁ to connect to the electrode 8 of the feedthrough capacitor 2 . A rising wall portion 10 ₂ that can be electrically connected is formed, and the other end side is inserted between the inner insulator 5 and the outer conductor 6 of the coaxial cable 1, and the enlarged diameter portion 1 of the cylindrical sleeve 3
An insulating cap 11 is inserted between the coaxial cable ₁ and the internal insulator 5 of the coaxial cable 1.

Furthermore, the crimp element 4 has a cylindrical sleeve 3.
A substantially U-shaped crimp portion 12 ₁ surrounds the position of the outer conductor 6 corresponding to the enlarged diameter portion 10 ₁ of the coaxial cable 1, and a substantially U-shaped crimp portion 12 ₂ surrounds the position of the outer sheath 7 of the coaxial cable 1. are integrally connected by a connecting piece 12 ₃ , and grooves 13 , 13 , 13 are formed on each crimp portion 12 ₁ , 12 ₂ .

In the present invention configured in this way, when the coaxial cable 1 is connected to the feedthrough capacitor 2 via the cylindrical sleeve 3, the cylindrical sleeve 3 passing through the feedthrough capacitor 2 is insulated from the outer conductor 6 of the coaxial cable 1. The crimping element 4 is inserted between the body 5 and the crimping element 4.
The crimping part 12 ₁ is placed on the outer periphery of the outer conductor 6 corresponding to the enlarged diameter part 10 ₁ of the cylindrical sleeve 3, and the crimping part 12 ₂ is placed on the outer periphery of the outer sheath 7 of the coaxial cable 1, and crimped. Both U-shaped crimping parts 12 ₁ and 12 ₂ of the crimping element 4 are crushed using a crimping tool of an appropriate size used for crushing the crimping element 4, and the coaxial cable 1 is connected to the feedthrough capacitor 2 through the cylindrical sleeve 3. Crimp and connect. In this way, the feedthrough capacitor 2 and the coaxial cable 1 are connected via the cylindrical sleeve 3 by crushing the crimp element 4 using a crimping tool, so that the amount of deformation due to the crushing of the crimp element 4 is always reduced. Since it is in a substantially constant state, no more than necessary force is applied to the coaxial cable 1, and the crimping element 4 has a shape in which the crimping part 12 ₁ and the crimping part 12 ₂ are connected together by the connecting piece 12 ₃ . Therefore, when the cylindrical sleeve 3 is inserted between the outer conductor 6, which is a braided wire of the coaxial cable 1, and the inner insulator 5, it is difficult to check whether the outer conductor 6 is broken in the middle. can.

As is clear from the above description, the antenna signal supplier connection device of the present invention has a sleeve body that protrudes through the feed-through capacitor between the inner insulator and the outer conductor of the coaxial cable that passes through the cylindrical sleeve. This is a device that crushes both crimping parts of a crimping element that integrally has both U-shaped crimping parts surrounding the outer conductor and outer sheath of the coaxial cable, without using a conventional ring. Since a crimping element having both U-shaped crimping parts is used, the internal insulator of the coaxial cable is not subjected to local mechanical deformation, and therefore the central conductor is not damaged, and a high frequency signal is supplied. It is possible to reliably avoid deterioration in the functionality of the coaxial cable due to
Furthermore, since the crimping element is crushed not only at the position of the outer conductor but also at the position of the outer sheath, the coaxial cable can be firmly connected to the cylindrical sleeve.

[Brief explanation of the drawing]

The drawings show an embodiment of the antenna signal supplier connection device according to the present invention, in which Fig. 1 is a longitudinal cross-sectional view, Fig. 2 is a front view with the crimp piece extracted, and Fig. 3 is a front view showing the crimping element extracted.
The figure is a longitudinal sectional view of a conventional antenna signal supplier connection device. 1... Coaxial cable, 2... Feedthrough capacitor,
3... Cylindrical sleeve, 4... Crimp, 5... Internal insulator, 6... Outer conductor, 7... Outer covering,
10...Sleeve body.

Claims (1)

[Scope of utility model registration request] A cylindrical sleeve that is electrically connected to one side of a feedthrough capacitor attached to a shield case and whose sleeve body passes through the feedthrough capacitor, and a center conductor that is surrounded by an internal insulator, and the inner insulator is An antenna signal supply connection device for connecting a coaxial cable coated with an outer conductor and further covering the outer conductor with an outer sheath,
The sleeve main body that protrudes through the feedthrough capacitor is inserted between the inner insulator and the outer conductor of the coaxial cable that penetrates the cylindrical sleeve, and the outer conductor and outer sheath of the coaxial cable are inserted. 1. A connection device for an antenna signal supply device, comprising: a crimping element which integrally has both U-shaped crimping portions surrounding the crimping portions and crushing the crimping portions.