JPH0817521A - Bent coaxial connector for high frequency - Google Patents

Abstract

PURPOSE:To make a connector which can precisely be mass-produced, is high in impedance matching, and improves safety in a high-frequency region by working a center conductor so as to have the same curvature as the center curvature of a curved cylindrical pipe. CONSTITUTION:A halved shape metallic bent member 1, press-worked in a symmetrical shape wherein a cylindrical pipe bendable to a required angle is halved by a center shaft, is joined to constitute a bent cylindrical pipe 2, and a joining member 3 is fitted to both ends to constitute a cylindrical outside conductor 4. A cylindrical type insulating member 6 is fitted to the fitting hole 5 of the member 3 to fix a center conductor 8, creepedly mounted on the center of the cylindrical outside conductor 4, to the center hole 7 of the member 6. The conductor 8 is curvedly worked in a ratio same as that of the pipe 2 by press work to equalize an air region 10, between the outer diameter of the conductor 8 and the inner diameter of the pipe, over a whole periphery, improving impedance matching, and also has a uniform continuous shape of the conductor 8, improving safety in a high-frequency region in paticular.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency bent coaxial connector used for microwave communication equipment and the like.

[0002]

2. Description of the Related Art A conventional bent connector of this type is a combination of linear structures, in particular, a 90 ° joint portion of a central conductor through which an electric signal passes is joined by soldering or the like and has the same thickness as the central conductor. Alternatively, there are drawbacks such that skill is required to obtain a required thickness and work efficiency is poor.

Further, the cylindrical outer conductor through which the central conductor passes also has a complicated shape and is inevitably subjected to milling, which is often expensive.

Further, there are many variations in products due to the complexity of the structure, and there are cases where the products cannot be used especially in the high frequency band of the microwave band. Therefore, a semi-flexible high frequency cable is used without using a bent coaxial connector. However, it was a bottleneck when forming a high-density three-dimensional circuit.

[0005]

Therefore, the present invention is intended to provide a connector which is suitable for mass production, can be supplied at a low cost, can be widely applied to a high frequency range, and is most suitable for a high density three-dimensional circuit.

[0006]

The present invention will be described in detail with reference to the embodiments shown in the drawings. A pair of half-divided metal members are formed by pressing a cylindrical pipe bent at a required angle into two symmetrical shapes about a central axis. The joining edges 9, 9 of the bending members 1, 1 ′ are joined by means such as brazing, soldering, welding or the like to form the bending cylindrical pipe 2, and both ends of the bending cylindrical pipe 2 are made of rings or flanges. The joining members 3 and 3 are fitted together to form the cylindrical outer conductor 4, and the cylindrical insulating members 6 and 6 are fitted into the fitting holes 5 of the joining members 3 and 3 to form the cylindrical insulating member 6, A central conductor 8 mounted on the center of the tubular outer conductor 4 in the central hole 7
, The center conductor 8 is turned into a uniform thickness so that the air region 10 between its outer diameter and the inner diameter of the curved cylindrical pipe 2 is made as uniform as possible over the entire circumference. The outer diameter of the central conductor 8 at the position corresponding to the joining member 3 and the cylindrical insulating member 6 is turned by considering their permittivities, and this central conductor 8 is pressed to form the center of the curved cylindrical pipe 2. It has the same bending process as the bend.

It is advisable to make all or part of the joint edge 9 of the curved members 1, 1'having a half-divided shape into a flange shape to facilitate the assembly and joining work.

The bending degree of the curved cylindrical pipe 2 is not limited to 90 degrees and can be set arbitrarily.

The end portion of the center conductor 8 has a male portion shape which is inserted into a female portion having a split groove or a female portion of another central conductor.

[0010]

As described above, according to the present invention, a pair of half-shaped metal bending members 1 and 1'which are formed by pressing a cylindrical pipe that bends at a required angle into two symmetrical shapes with a central axis are bent and joined. A cylindrical pipe 2 is formed, and joining members 3, 3 such as rings or flanges are fitted to both ends of the curved cylindrical pipe 2 to form a cylindrical outer conductor 4, and fitting holes for the joining members 3, 3 are formed. 5. Cylindrical insulating members 6 and 6 are fitted in 5 to form cylindrical insulating members 6 and 6
A center conductor 8 for mounting the center of the cylindrical outer conductor 4 is fixed in the center hole 7 of the center conductor 8, and the center conductor 8 is subjected to the same bending process as the bending of the center of the curved cylindrical pipe 2 by press working. 8 and the curved cylindrical pipe 2 can be precisely and mass-produced, and the air region 10 between the outer diameter of the central conductor 8 and the inner diameter of the curved cylindrical pipe 2 is as uniform as possible over the entire circumference, and impedance matching is also possible. Although the center conductor 8 is discontinuous with the cylindrical insulating members 6 and 6 and the air region 10 due to impedance matching, the inner diameter of the curved cylindrical pipe 2 and the inner diameter and center of the joint member 3 such as a ring or a flange. Outer diameter of conductor,
There is no inconvenience because the dimensions and shape of the cylindrical insulating member 6 can be easily determined in consideration of the dielectric constant of the insulating member 6. Rather, since the central conductor has a uniform continuous shape, the stability is particularly high in the high frequency region.

[Brief description of drawings]

FIG. 1 is a sectional view of a connector of the present invention.

FIG. 2 is a perspective view of a bending member in the same device.

FIG. 3 is a cross-sectional view of a cylindrical outer conductor in the same device.

[Explanation of symbols]

 1, 1 ′ is a bending member 2 is a curved cylindrical pipe 3, 3 is a joining member 4, 4 is a cylindrical outer conductor, 5 is a fitting hole 6, 6 is a cylindrical insulating member, 8 is a central conductor

Claims (1)

[Claims] 1. A curved cylindrical pipe is constructed by joining a pair of half-shaped metal curved members obtained by pressing a cylindrical pipe curved at a required angle into two symmetrical shapes along a central axis. A cylindrical outer conductor is constructed by fitting a joining member such as a ring or a flange to both ends of the, and a cylindrical insulating member is fitted in the fitting hole of the joining member to form a central hole of the cylindrical insulating member. A central conductor for mounting the center of the cylindrical outer conductor is fixed to the central conductor 8, and the central conductor 8 is pressed to form a curved cylindrical pipe 2
A bent coaxial connector for high frequency that has been subjected to the same bending process as the bend at the center of.