JPH0888056A - Coaxial converting adaptor - Google Patents

Abstract

PURPOSE: To improve the electric characteristics, to reduce the manufacturing cost, and to realize a small size and a light weight. CONSTITUTION: A coaxial converting adaptor used when coaxial passages with different connecting types are connected each other has a flange body 2 having a connecting flange 2B suitable for a specific connecting type at one end side, and a connecting shell 3 having a connection 4 suitable for a connecting type different from the above specific connecting type. Furthermore, this coaxial converting adaptor is composed by forming the flange body 2 and the connecting shell 3 integrally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial conversion adapter used when connecting coaxial lines having different connection forms.

[0002]

2. Description of the Related Art Generally, a coaxial line is connected by connecting a flange body attached to an end of one coaxial line to a flange body provided on the other coaxial line or an equivalent product with a screw or the like. . N for the connection form of the coaxial path (connection form between the flange bodies and connection form between the flange body and the coaxial line)
There are standards such as TT standard, EIAJ standard, JIS standard,
By establishing such a connection standard, the connection is standardized.

However, it is difficult to make a connection between different standards. Therefore, for the connection between different standards, the connection standard between the flange bodies and the connection standard between the flange body and the coaxial path are required. A coaxial conversion adapter configured to be different was used. Furthermore, the connection form may differ even with the same connection standard, and even in such a case, the coaxial conversion adapter has been used.

As such a coaxial conversion adapter, there is a conventional one shown in FIG. This coaxial conversion adapter 50
Is used to connect different standards,
The coaxial conversion adapter used for connecting the same standards having different connection configurations has the same configuration.

The coaxial conversion adapter 50 has a flange body 51 and a connection shell 52. Flange body 51
Has a connection flange 53 formed at one end thereof. The connection flange 53 has a shape adapted to a predetermined connection standard (hereinafter, referred to as a first connection standard for convenience of description). The connection shell 52 is screwed to the other end side of the flange body 51 via a waterproof gasket 54, and a connection coupling 55 is rotatably attached to the tip end side thereof. The connection coupling 55 is connected to a jack (not shown) attached to the connection end of the coaxial path, and like the jack, a second connection different from the first connection standard described above. It has a shape that conforms to the standard.

The coaxial conversion adapter 50 also has a center contact 56. The center contact 56 is housed in the flange body 51 and the connection shell 52 via the insulating insulator 57, so that the inner conductors of the first and second coaxial paths connected by the coaxial conversion adapter 50 are connected to each other. It has become. That is, the end portion on the coupling side of the center contact 56 has a shape adapted to the above-mentioned second connection standard.
It is adapted to be connected to the inner conductor end portion of the second coaxial path processed in conformity with the connection standard. The end of the center contact 56 on the side of the connection flange is connected to the end of the center conductor of the first coaxial path via an anchor connector or the like (not shown). The center conductor end of the first coaxial path is processed in conformity with the above-mentioned first connection standard.

Further, the coaxial conversion adapter 50 has an external contact 58. External contact 58
Are housed and arranged inside the connection coupling 55, and are electrically connected to the flange body 51 via the connection shell 52. The external contact 58 has a shape that conforms to the second connection standard described above.
It is adapted to be connected to the outer conductor end of the second coaxial path processed in conformity with the connection standard. Thus, in this coaxial conversion adapter 50, the outer conductor of the first coaxial path is connected to the outer conductor of the second coaxial path via the outer contact 58, the connection shell 52, and the flange body 51. .

By the way, there are a plurality of standards currently used as connection standards, and it is necessary to prepare a large number of coaxial exchange adapters 50 so as to enable connection between all of these standards. . Therefore, in the coaxial conversion adapter 50, the flange body 51 and the connection shell 52 adapted to each connection standard or each connection form are prepared respectively, and the flange body 51 to be coupled according to the connection form or connection standard of the other side. The connection shell 52 and the connection shell 52 are selected in various ways, thereby making the parts common.

[0009]

However, the conventional coaxial conversion adapter 50 thus configured has the following problems. That is, the coaxial conversion adapter 50
Is separated into the flange body 51 and the connection shell 52, the number of connection points existing between the coaxial paths to be connected increases, and the contact resistance, VSWR (voltage standing wave ratio), and S
There is a problem that the electrical characteristics such as / N ratio are deteriorated.

Further, the coaxial conversion adapter 50 has a problem that the number of parts is increased while the parts are made common and the manufacturing cost is increased accordingly. That is, when the coaxial conversion adapter is used for connection between connection standards (connection modes) that have relatively few opportunities to connect, the cost reduction effect by the common use of parts and the effect of reducing the parts inventory burden are large. When this coaxial conversion adapter 50 is used for connection between connection standards (connection forms) that often have connection opportunities, since the entire body is divided into a flange body 51 and a connection shell 52, the number of parts is reduced. The increase in cost and the increase in the number of parts due to the provision of the waterproof gasket 54 between them increase the effect of increasing the cost, rather increasing the manufacturing cost.

Further, the flange body 51 and the connection shell 5 are
Due to the structure connecting the two, there is a problem that the size is increased in the axial direction and the weight is increased.

Therefore, it is an object of the present invention to provide a coaxial conversion adapter which can improve electrical characteristics, reduce manufacturing cost, and can be reduced in size and weight.

[0013]

In order to achieve such an object, the coaxial conversion adapter of the present invention has a flange body having a connection flange adapted to a predetermined connection form on one end side, and the other end of the flange body. The connection body is provided on the side and has a connection portion adapted to a connection form different from the predetermined connection form, and the flange body and the connection body are integrally formed.

[0014]

According to the above construction, since the flange body and the connection body are integrally formed, the number of electrically connected portions existing between the coaxial paths connected by the coaxial conversion adapter is reduced accordingly.

Further, since the flange body and the connection body are integrally formed, the number of parts is reduced accordingly.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a half sectional view showing the structure of a coaxial conversion adapter 1 according to the first embodiment of the present invention. The coaxial conversion adapter 1 is used for connection between different connection standards as in the conventional example.

The coaxial conversion adapter 1 has a flange body 2. The flange body 2 is configured by rotatably attaching a connection flange 2B to one end of a main body cylinder 2A made of metal (for example, brass). The connection flange 2B has a structure (flange diameter, attachment diameter and number of connection screw attachment holes, etc.) adapted to the first connection standard (for example, NTT standard) in the coaxial path. Further, the surface of the main body cylinder 2A is plated with silver (not shown) in order to enhance electric conductivity.

At the other end of the flange body 2, a connection shell (corresponding to the connection body of the claims) 3 is provided. The connection shell 3 is made of a metal (for example, silver-plated brass) cylindrical body integrally formed with the main body cylinder 2A. A connection coupling 4 is rotatably attached to the end of the connection shell 3 coaxially. The connection coupling 4 is made of, for example, brass plated with nickel.
It has a female screw portion 4a adapted to a second connection standard (for example, EIAJ standard) different from the above-mentioned first connection standard.

The coaxial conversion adapter 1 also has a center contact 5. The center contact 5 is made of, for example, brass plated with silver. The center contact 5 is coaxially housed in the main body cylinder 2A and the connection shell 3 via the insulating insulators 6A and 6B. The center contact 5 is composed of a first contact 5A supported by the insulating insulator 6A in the main body tube 2A and a second contact 5B supported by the insulating insulator 6B in the connection shell 3, and both contacts 5A, 5B is connected via a connecting tube 5C. That is, the connecting cylinder 5C is connected and fixed to the second contact 5B by a method of screw coupling and soldering, and the first contact 5A is fitted and crimped at the end of the connecting cylinder 5C having the crimp slit 16.

A male fitting portion 5a is provided at the coupling-side end of the second contact 5B. The male fitting portion 5a is processed in conformity with the second connection standard described above, and the second contact 5B has the male fitting portion 5a on the inner conductor (not shown) of the second coaxial path. It is designed to be connected via.

On the other hand, the end portion of the first contact 5A on the side of the connection flange 2B is connected via an unillustrated anchor connector or the like.
It is adapted to be connected to the center conductor (not shown) of the first coaxial path processed according to the above-mentioned first connection standard.

The coaxial conversion adapter 1 also has an external contact 7. The external contact 7 is housed and arranged inside the connection coupling 4 via the gasket 15, and the external contact 7 is electrically connected to the flange body 2 via the connection shell 3. Further, the outer contact 7 has a shape adapted to the above-mentioned second connection standard, and is similarly connected to the outer conductor end portion of the second coaxial path processed according to the second connection standard. It is like this. Thus, in this coaxial conversion adapter 1, the outer conductor of the second coaxial path is connected to the outer conductor of the first coaxial path via the outer contact 7, the connection shell 3, the main body tube 2A, and the connection flange 2B. It is like this.

In FIG. 1, reference numeral 10 is a connecting flange 2.
B is rotatably attached to the main body cylinder 2A, 11 is a snap ring that rotatably attaches the connection coupling 4 to the connection shell 3, and 12 is a connection flange 2.
A waterproof O-ring attached to the B end surface, and 13 is a waterproof O-ring provided between the insulating insulator 6B and the connection shell 3.

In this coaxial conversion adapter 1, the insulating insulators 6A, 6B and the center contact 5 are attached as follows. That is, first, the insulating insulator 6B is inserted into the connecting shell 3, and the connecting ring 14 is attached to the connecting shell 3 to fix the insulating insulator 6B. Then, the second contact 5B, to which the connecting cylinder 5C has been connected in advance by screw coupling and soldering, is mounted in the insulating insulator 6B.
Then, the first contact 5A to which the insulating insulator 5A is attached is inserted into the main body cylinder 2A, and further, the first contact 5A is attached to the end portion of the connection cylinder 5C having the crimping slit 16.
The center contact 5 is integrated by press-fitting A.
At this time, since the insulating insulator 6A is fixed in the main body cylinder 2A, its outer diameter is slightly larger than the inner diameter of the main body cylinder 2A. Therefore, by cooling the insulating insulator 6A to a cryogenic temperature by liquid nitrogen or the like, the inner diameter of the insulating insulator 6A is temporarily reduced, and the insulating insulator 6A is fitted into the main body cylinder 2A.

In this coaxial conversion adapter 1, since the flange body 2 and the connection shell 3 are integrally formed, there is no electrical connection portion between the flange body 2 and the connection shell 3 by that amount. Such an electrical connection point causes deterioration of electrical characteristics such as contact resistance, VSWR (voltage standing wave ratio), and S / N ratio, and the coaxial conversion adapter 1 having a small number of electrical connection points Then, the respective electric characteristics described above are improved accordingly.

The coaxial conversion adapter 1 has the flange body 2 and the connection shell 3 which are integrally formed.
The number of parts is decreasing. Therefore, the number of parts is reduced and the manufacturing cost can be reduced. Furthermore, in the case of being composed of a plurality of parts, it is necessary to provide a waterproof structure between both parts. However, in the coaxial conversion adapter 1 formed integrally, it is not necessary to provide such a waterproof structure. In addition, the number of items is decreasing.

Such a characteristic is that the coaxial conversion adapter 1 is used in a relatively large amount such as when the coaxial conversion adapter 1 is used for the connection between the connection forms having many opportunities to connect.
It is particularly effective when manufacturing.

Further, the coaxial conversion adapter 1 integrates the flange body 2 and the connection shell 3 and does not have a structure for connecting these parts. Therefore, since the connecting structure is not necessary, the weight can be reduced and the size can be reduced in the axial direction.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a half sectional view of the second embodiment of the present invention.

The basic structure of the coaxial conversion adapter 20 is the same as that of the coaxial conversion adapter 1 described above, and the same or similar parts are designated by the same reference numerals as those in FIG. 1 and detailed description thereof will be given. Omit it.

The coaxial conversion adapter 20 is characterized by a connection structure with the second coaxial path. That is, the coaxial conversion adapter 20 is integrated with the connection shell 3 into the S-type jack 2
1 is mounted coaxially. S-type jack 21
Is provided with a male screw portion 21a adapted to the second connection standard. Further, the inner peripheral surface of the S-type jack 21 is a connection end portion of the outer conductor, and its shape is adapted to the second connection standard. Furthermore, the second contact 5B
A female fitting portion 5b adapted to the second connection standard is provided at the end portion on the S-type jack side. On the other hand, the connection flange 2B
Has a shape adapted to the first connection standard, as in the first embodiment.

The coaxial conversion adapter 2 configured as described above
0 is connected to the second coaxial path processed according to the second connection standard via the male screw portion 21a of the S-type jack 21. Then, the center contact 5 is connected to the inner conductor end of the second coaxial path via the female fitting portion 5b. Further, the S-type jack 21, the connection shell 3, the main body tube 2A, and the connection flange 2B are connected to the outer conductor end portion of the second coaxial path via the inner peripheral surface of the S-type jack 21. ing. Since the connection with the first coaxial line is the same as that of the first embodiment, its explanation is omitted.

By the way, in each of the above-described embodiments, the present invention has been implemented in the coaxial conversion adapter used for connection between different standards.
It goes without saying that the present invention can also be implemented in a coaxial conversion adapter used for connecting coaxial lines having different connection forms.

[0035]

As described above, according to the present invention, since the flange body and the connection body are integrally formed, the number of electrical connection points existing between the coaxial paths connected by the coaxial conversion adapter is reduced accordingly. As a result, electrical characteristics such as contact resistance, VSWR (voltage standing wave ratio), and S / N ratio are improved.

Further, since the flange body and the connection body are integrally formed, the number of parts is reduced and the waterproof structure is simplified, and the manufacturing cost can be reduced accordingly.

Further, since the flange body and the connection body are integrally formed, the size reduction, especially the axial size reduction and the weight reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a half sectional view showing a configuration of a coaxial conversion adapter according to a first embodiment of the present invention.

FIG. 2 is a half sectional view showing a configuration of a coaxial conversion adapter according to a second embodiment of the present invention.

FIG. 3 is a half sectional view showing a configuration of a conventional coaxial conversion adapter.

[Explanation of symbols]

 2 Flange body 2B Connection flange 3 Connection shell 4 Connection coupling 21 S type jack

Claims (1)

[Claims] 1. A coaxial conversion adapter used when connecting coaxial lines having different connection forms, wherein a flange body having a connection flange adapted to a predetermined connection form on one end side and the other end side of the flange body. And a connection body having a connection portion adapted to a connection form different from the predetermined connection form, wherein the flange body and the connection body are integrally formed.