JPH0447913Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a coaxial connector, and particularly to a terminal connector of a coaxial cable used in electronic equipment.

(Prior art) This type of coaxial connector uses an insulator between the center conductor and the outer conductor that has low dielectric loss, constant dielectric constant, and excellent mechanical and thermal properties. There is a need. Conventional insulators are made of tetrafluoroethylene resin and are machined. Furthermore, the connection between the center conductor and the center conductor of the coaxial cable is made by soldering, but this method has the following drawbacks.

(a) Insulators (tetrafluoroethylene) are difficult to mold and are expensive because they are machined products.

(b) Since the center conductor is connected by soldering, looseness occurs in the center conductor due to thermal stress, thermal expansion of the insulator, etc.

(Purpose of the invention) An object of the invention is to provide a coaxial connector which eliminates the above-mentioned drawbacks, has no looseness in the center conductor, and can be provided at low cost.

(Structure of the invention) The structure of the invention is a coaxial connector in which a connector center conductor and a coaxial cable center conductor are connected, and an outer conductor is provided around this through an insulator.
The insulator is made of a thermoplastic material, and the connector center conductor and the coaxial cable center conductor are press-fitted to each other.

(Example) Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a side view showing a coaxial connector according to an embodiment of the present invention, and FIG. 2 is a sectional view mainly showing the central portion of the coaxial connector of FIG. These figures 1 and 2
As shown in the figure, the coaxial connector of this embodiment includes a connector body 1, a connector center conductor 2, an insulator 3 made of thermoplastic material, an outer conductor 4, a coaxial cable 5, and a coaxial cable center conductor 6. Ru.

The manufacturing procedure for this coaxial connector is as follows: First, the center conductor 6 of the coaxial cable 5 is fitted into the connector center conductor 2, and a thermoplastic insulator 3 is placed around the joint.
After covering the outer conductor 4 (or later), the atmosphere is heated to a high temperature to soften and plastically deform the insulator 3, and the connector center conductor 2 and the outer conductor 4 are integrally formed. Furthermore, the connector center conductor 2 and the coaxial cable center conductor 6 are pressed together and fixed. Furthermore, after covering the connector body 1, the coaxial cable 5 is fixed by pressure contact.

Conventionally, the center conductor 2 and the coaxial cable center conductor 6 were connected by soldering, so the insulator 3 was made of a material that can withstand considerable high temperatures (for example,
350℃). However, in this embodiment, since the center conductor 2 and the coaxial cable center conductor 6 are press-contacted, no heat is applied to the insulator 3, so there is no problem even if a thermoplastic material is used.

The most distinctive feature of this embodiment is that the center conductor 2 and the coaxial cable center conductor 6 are press-contacted, so that both can be integrally molded, and thermoplastic insulators can be used. be.

(Effects of the invention) As explained above, according to the invention, the following effects can be obtained.

(c) Since it can be integrally molded, mass production is easy and costs are low.

(d) Since the pressure welding method is used, the inner diameter of the insulator will not be deformed and the center conductor will not wobble.

(E) It can be easily manufactured by thermoplastic deformation.

(f) For this reason, the connector center conductor and the coaxial cable center conductor, as well as the center conductor and the outer conductor, are firmly fixed, preventing rattling, being resistant to mechanical vibration, and reducing characteristic impedance, etc. There is no need to worry about electrical characteristics changing.

This effect is particularly noticeable in high frequency bands, and if there is any "wobble", the transmission loss due to reflection will be significantly reduced.

(g) Even if the center conductors are press-fitted to each other, there will be no wobbling, and there is no need to worry about increased dielectric band loss due to solder flux, as occurs when soldering.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a coaxial connector according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the vicinity of the center of the coaxial connector shown in FIG. In the drawings, 1...Connector body, 2...Connector center conductor, 3...Insulator, 4...Outer conductor, 5...Coaxial cable, 6...Coaxial cable center conductor.

Claims (1)

[Scope of utility model registration request] In a coaxial connector in which a connector center conductor and a coaxial cable center conductor are connected, and an outer conductor is provided around this via an insulator, the insulator is made of a thermoplastic material and is plastically deformed at high temperature to form the connector center conductor. and the outer conductor are integrally formed, and the connector center conductor and the coaxial cable center conductor are fixed to each other by pressure contact.