JPH025502Y2 - - Google Patents

Description

[Detailed description of the invention] The invention of the present application aims to solve the following problems.

(Industrial Application Field) This invention relates to a connector seat used for equipment used in CATV lines.

(Prior art) The structure of the holder that determines the relative position between the outer conductor and the center conductor requires a large number of parts and requires a lot of effort, or the structure of the holder made of foam material is not strong enough to hold the outer conductor. There was a drawback that the center conductor was misaligned. Making it more durable had the problem of increased dielectric loss.

(Problems to be solved by the invention) This invention aims to eliminate the above-mentioned conventional problems and provide a connector seat that is simple in construction, durable, and has low dielectric loss. It is.

The configuration of the present invention is as follows.

(Means for Solving the Problems) The present invention takes the measures as described in the claims above, and its effects are as follows.

(Function) Since the holder is composed of two elements, many hollow parts can be formed. Moreover, the joint has a durable structure. In addition, since it is a two-member structure, it requires less effort to connect.

(Example) Below, drawings showing examples of the present application will be described. The plug seat A includes an external conductor 1, a holder 10,
The center conductor 31 is configured in a positional relationship as shown in the figure. In the external conductor 1 having a well-known structure, the flange 2 is used to hold the hole edge of the CATV case 6 with a nut 5. Reference numeral 3 denotes a connecting flange separated by a space 3', which is directly or indirectly connected to a ground circuit in the case via soldering means. Numeral 4 is a threaded portion for screwing together the nut 5 and a well-known plug. Reference numeral 7 indicates a central hole provided in the wall 1' of the outer conductor 1, 8 indicates an opening, and 9 indicates a hollow section.

Next, as is known, in the center conductor 31 which is formed by folding an elastic plate of phosphor bronze in half, 32 is a part into which the center conductor of the plug is introduced, and is configured to be able to open and close elastically. There is. Reference numeral 33 indicates a terminal for connecting the circuit within the case, 35 indicates a cut-and-beveled engaging claw for preventing slippage, and 34 indicates a contact portion.

Next, the holder 10 is made of any insulating material. For example, a durable and heat-resistant polyethylene material or a material with a dielectric constant of 2 or 3 is used. The holder 10 is composed of a first element 12 and a second element 13, and the second element 13 is a cylindrical body having a hollow 24 with an outer circumferential surface 25 corresponding to the inner circumferential surface of the external conductor 1. and one end 22' is connected to the outer conductor 1.
The other end is brought into contact with the wall 1', and the wall 23' on that side has a through hole 23.
The first element 12 has an outer circumferential diameter in two stages, and the large diameter part 1
2' has a diameter corresponding to the inner circumferential surface of the outer conductor 1, and the small diameter portion 12'' is inserted into the open end 22 of the second element 13, and the first element 12
At the axial center position, a large-diameter cutout 15, a fine holding hole 21, a guide hole 20 having a slope that gradually enlarges, and a large-diameter support hole 19 are provided in order from the open side of the external conductor 1. , and the holding hole 21 and the support hole 1
9 fixedly supports the center conductor 31 as shown in the figure, and the small diameter portion 12'' has a large number of grooves 18 oriented in the axial direction, with protruding portions 17 between the grooves. In the remaining form, the grooves are provided all around the circumference, and furthermore, in the large diameter part 12', except for the side 14 of the open part 8 of the outer conductor 1, there are a large number of mutually oriented grooves in the axial direction near the small diameter part. It is provided around the four circumferences with protruding portions 16' remaining in between.
If the sum of the cross-sectional areas of these grooves 18 and 16 is made larger than the sum of the cross-sectional areas of the radially remaining protrusions 17 and 16', the dielectric loss will be further reduced.
Furthermore, the arrangement of the protruding portions 17 and 16' is similar to that of the central conductor 31.
If the central conductor 3 is arranged on all sides with
Helps prevent misalignment in step 1. Also, the protruding portion 17,1
It is desirable that the positional relationship of 6' be in the same axial direction for processing purposes.

Next, in FIG. 3, the assembly order is as follows: insert the center conductor 31 into the first element 12 in the direction of arrow V, connect the second element 13 to the first element 12, insert these into the outer conductor 1, and insert the center conductor 31 in the direction of arrow V. The process is completed by creating a caulking protrusion in the direction indicated by 27. Note that when the assembly is completed, the holder 10 is integrated with the outer conductor 1 within a range of slight rotation.

(Effects of the invention) As described above, in the present invention, the center conductor 31 is fixedly supported with respect to the outer conductor 1 by the holder 10 made of an insulating material, and the structure of the holder 10 is is a configuration in which two parts are combined, and can also be used with high-density polyethylene material, so the central conductor 3 for the outer conductor 1
This has the advantage that position 1 can be accurately maintained even when an external force is applied.

Furthermore, the configuration of the holder 10 is such that on the axis side,
A large cutout 15, a guide hole 20, and a large support hole 19 are provided, and a large number of grooves 1 are provided on the outer periphery.
6 and 18, the material portion that causes dielectric loss is reduced, resulting in the effect that a holder 10 with low loss can be obtained.

Moreover, even if a large number of grooves 16 and 18 are provided as described above, there are protrusions 17 and 1 between them.
6' remains on the four circumferences, so that the outer conductor 1
The positioning between the center conductor 31 and the center conductor 31 is ensured, and the alignment is good, which is effective in stabilizing high frequency characteristics.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and Fig. 1 is a front view, Fig. 2 is a cross-sectional view taken along the - line, Fig. 3 is an exploded view, Fig. 4 is a cross-sectional view taken along the - line, and Fig. 5 is a view taken along the V arrow. A directional view, FIG. 6 is a cross-sectional view along the - line, and FIG. 7 is a view in the direction of arrows. DESCRIPTION OF SYMBOLS 1... Outer conductor, 10... Holder, 31... Center conductor, A... Junction seat, 12... First element, 13
...Second element.

Claims (1)

[Scope of utility model registration request] a hollow cylindrical external conductor having one end open and the other end provided with a wall having a central hole; a holder made of an insulating material fixedly positioned within the external conductor; In the plug seat, the center conductor is supported and fixed by the holder at the axial center position. A hollow cylindrical body corresponding to the inner circumferential surface of the outer conductor, one end of which is open within the outer conductor and the other end of which is in contact with the wall, while the first element has an outer circumferential diameter. The large diameter part has a diameter corresponding to the inner circumferential surface of the outer conductor, the small diameter part is inserted into the open end of the second element, and is located at the axial center position of the first element. The outer conductor is provided with a large diameter cutout, a fine holding hole, a guide hole having a gradually expanding slope, and a large diameter support hole in order from the open side of the external conductor, and the holding hole and the support hole The center conductor is fixedly supported, and in the case of the small diameter portion mentioned above, a large number of grooves oriented in the axial direction are provided around the four circumferences in such a manner that protruding portions remain between the grooves. Furthermore, in the large diameter part, a large number of grooves facing the axial direction are provided around the four circumferences of the outer conductor, leaving the open side of the outer conductor close to the small diameter part, with protruding parts remaining between the grooves. A fitting seat characterized by having a