JPH0590861U - Coaxial connector connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a connection structure of a coaxial connector that can ensure a connection without causing a problem such as a decrease in connection strength and a decrease in mountability. [Structure] A pair of connector members 30A and 30B are provided, and these connector members 30A and 30B are respectively provided with an outer conductor pipe 32 and an inner conductor pipe 31, and the outer conductor pipes 32 are joined together by a fastening flange portion 33 being joined. The inner conductor tube 31 has a coaxial connector connection structure in which the anchor connector 2 is connected to each other, and both ends of the anchor connector 2 are provided with connecting cylinder portions 4A and 4B which are fitted into the inner conductor tube 31. An elastic force forming slit 6 is formed along the axial direction in the connecting cylinders 4A and 4B, and a guide pin 8 is inserted into the connecting cylinders 4A and 4B with the pin tip 8b protruding. Coaxial connector connection structure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connection structure of a coaxial connector used when connecting a coaxial cable.

[0002]

[Prior Art]

 As a coaxial connector used for connecting a coaxial cable, there is conventionally a coaxial connector which is composed of a set of connector members 30A and 30B to be butt-joined as shown in FIG. Each of the connector members 30A and 30B is configured by coaxially arranging the inner conductor tube 31 inside the outer conductor tube 32 and integrally mounting the fastening flange portion 33 on the outer peripheral edge of the outer conductor tube 32. The connection of such a coaxial connector was performed as follows.

First, an anchor connector 20 for connecting an inner conductor tube is prepared. The anchor connector 20 has connecting cylindrical portions 21A and 21B press-fitted into the inner conductor tube 31 at both ends, and a ring-shaped insulating insulator 22 is externally fitted to the central portion. The connecting cylinders 21A and 21B are formed with elastic-forming slits 23 along the axial direction.

Then, the connecting tubular portion 21A of the anchor connector 20 is press-fitted into the inner conductor pipe 31 of one connector member 30A, and the other connector member 30B is connected to the connector member 30A in this state. This connection is performed by abutting the fastening flange portions 33, 33 of the connector members 30A, 30B with the connecting tubular portion 21B of the anchor connector 20 introduced into the inner conductor pipe 31 of the connector member 30B, and further It is performed by bolting the flange portions 33, 33 for use. As a result, the inner conductor tubes 31, 31 are connected to each other via the anchor connector 20, and the outer conductor tubes 32, 32 are connected to each other via the fastening flanges 33, 33 which are bolted. In the figure, reference numeral 34 is an O-ring which is interposed between the fastening flange portions 33, 33 and seals the connection portion.

[0005]

[Problems to be solved by the device]

 By the way, the connection structure of the coaxial connector as described above has a problem that the connection by the anchor connector 20 is incomplete. Because the connecting cylinders 21A and 21B are provided with the elasticity forming slits 23, the connecting cylinders 21A and 21B are easily deformed by internal strain of the connecting cylinders 21A and 21B. This deformation occurs in the direction in which the tips of the cylindrical portions 21A and 21B spread. Therefore, it is difficult to mount the deformed anchor connector 20 on the internal conductor 31, and even if the anchor connector 20 is mounted, only the tips of the connecting tube portions 21A and 21B are in contact with the inner peripheral surface of the internal conductor tube 31 and the other portions are not contacted. Sometimes the connection was incomplete.

In order to solve such a problem, it is conceivable to reduce the length of the connecting cylinder portions 21A and 21B and thereby reduce the deformation of the cylinder portions 21A and 21B. However, when the connecting cylinders 21A and 21B are shortened, not only the connection strength is lowered, but also the following problems occur.

As described above, the anchor connector 20 is attached to the inner conductor pipe 31 of the one connector member 30A and then attached to the inner conductor pipe 31 of the other connector member 30B. Therefore, when mounting on the inner conductor tube 31 of the other connector member 30B, as shown in FIG. 5, the position of the tip of the connecting cylinder portion 21B is visually observed through the fastening flange portion 33 of the one connector member 30A. While checking, the connecting cylinder portion 21B is introduced into the inner conductor tube 31 of the other connector member 30B. However, when the connecting cylinders 21A and 21B are shortened, the tips of the cylinders 21A and 21B cannot be confirmed through the fastening flange 33, which makes connection of the connector members 30A and 30B extremely difficult. Forcibly inserting the anchor connector 20 and the end of the inner conductor tube 31 caused damage.

In order to improve the visibility, it is conceivable to bring the connection end portion of the inner conductor pipe 31 closer to the connection end faces of the connector members 30 A and 30 B. Due to the structure of the interposer, there is a limit to that, and the visibility cannot be improved.

The present invention has been made in view of the above problems, and provides a connection structure for a coaxial connector that can ensure a connection without causing inconveniences such as a decrease in connection strength and a decrease in mountability. The purpose is to do.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has a pair of connector members, each of which has an outer conductor pipe and an inner conductor pipe arranged in the outer conductor pipe. They are connected to each other by butt-jointing the fastening flanges provided on their outer peripheral edges, and the inner conductor tubes are coaxial connector connection structures that are connected by an anchor connector interposed between them. The anchor connector described above is provided at both ends thereof with a connecting tubular portion that is fitted into the inner conductor pipe, and the connecting tubular portion is formed with an elastic force forming slit along the axial direction, and A guide pin is inserted in the connecting cylinder with the tip of the pin protruding from the connecting cylinder, and the connection structure of the coaxial connector is configured from the above.

[0011]

[Action]

 According to the above configuration, since the connecting tube is supported from the inside by the guide pin, the internal conductor tube gripping force is improved, and even if the connecting tube is shortened, a sufficient inner conductor tube gripping force is obtained. Will be available.

Further, since the guide pin projects from the tip of the tubular portion, the tip of the tubular portion for connection can be seen through the fastening flange portion even if the tubular portion for connection is shortened.

[0013]

Embodiments The present invention will be described in detail below based on embodiments shown in the drawings. FIG. 1 shows a connection structure of a coaxial connector according to an embodiment of the present invention.

The connection structure of this coaxial connector is basically the same as that of the conventional example, and the same or similar parts are designated by the same reference numerals. That is, the coaxial connector includes a pair of connector members 30A and 30B that are butted and joined together. Each of the connector members 30 </ b> A and 30 </ b> B is configured such that the inner conductor tube 31 is coaxially arranged in the outer conductor tube 32 and the fastening flange portion 33 is integrally attached to the outer peripheral edge of the outer conductor tube 32. Further, the anchor connector 2, which is a feature of the present invention, is interposed in the coaxial connector configured as described above.

As shown in FIG. 2, the anchor connector 2 includes a metal anchor connector body 3. At both ends of the anchor connector main body 3, cylindrical connecting cylinders 4A, 4B are integrally provided. The connecting cylinders 4A and 4B have a length that is necessary to electrically connect to the internal conductor tube 31. That is, the connecting cylinders 4A and 4B are shorter than those of the conventional example. A guide pin mounting hole 5 is formed in the anchor connector body 3. The guide pin mounting hole 5 has an inner diameter equal to the inner diameter of the connecting cylinders 4A and 4B, and penetrates the anchor connector body 3 to be coaxial with the connecting cylinders 4A and 4B. The connecting cylinders 4A and 4B are formed with elastic forming slits 6. The elastic force forming slit 6 is provided along the axial direction of the anchor connector body 3 from the connecting cylinder portions 4A and 4B. A ring-shaped insulating insulator 7 is fitted on the outer periphery of the central portion of the anchor connector body 3.

The guide pin 8 is inserted into the anchor connector main body 3 configured as described above. The guide pin 8 is composed of a metal cylindrical pin having an outer diameter slightly smaller than the inner diameters of the connecting cylinders 4A and 4B, and is longer than the anchor connector body 3. Further, a large diameter portion 8a for mounting is provided at the center of the guide pin 8. Then, the large diameter portion 8a is press-fitted into the mounting hole 5 so that the guide pin 8 is mounted on the connector member main body 3. Since the guide pin 8 is longer than the anchor connector body 3, the pin tips 8b, 8b project from the connecting cylinders 4A, 4B. The guide pin 8 is not limited to a metal, but may be made of any material as long as it has a mechanical strength, such as a hard resin pin.

In the anchor connector 2 configured as described above, one connecting tubular portion 4A is inserted into the internal conductor pipe 31 of the connector member 30A, and the other connecting tubular portion 4B is inserted into the internal conductor of the connector member 30B. It is inserted into the pipe 31 and is interposed between the connector members 30A and 30B.

Next, the connection of the connector members 30A and 30B will be described with reference to FIG. First, the one end side connecting cylinder portion 4A of the anchor connector 2 is press-fitted into the inner conductor pipe 31 of one connector member 30A. Then, the connector member 30A is held by hand and brought close to the other connector member 30B, and the other end side connecting cylinder portion 4B of the anchor connector 2 is guided into the inner conductor pipe 31 of the other connector member 30B. At this time, the connecting cylinder portion 4B is shortened as described above, and it is difficult to visually recognize the connecting cylinder portion 4B through the fastening flange portion 33. However, since the guide pin 8 projects from the tip of the connecting cylinder portion 4B, the pin tip 8b can be visually observed. Therefore, the connecting tube portion 4B can be surely introduced into the inner conductor 31.

Then, while the connecting tubular portion 4B is being introduced into the internal conductor 31, the fastening flange portion 33 of the connector member 30A is butted against the fastening flange portion 33 of the connector member 30B, and the fastening flange portion 33 is further provided. , 33 are bolted to connect and fix the connector member 30A and the connector member 30B.

The results of measuring the connection strength of the anchor connector in the coaxial connector of the present invention and the connection strength of the reference product (having an anchor connector in which only the length of the connecting cylinder is shortened without a guide pin) Is shown in Table 1. In this measurement, the pull-out force when pulling out the anchor connector from the internal conductor tube was measured as a measure of the connection strength.

For this measurement, a connector member having an inner conductor tube made of phosphor bronze with an inner diameter of 3.35 mm was used, and as an anchor connector of the present invention, a connecting tube having a length of 28.2 mm and a thickness of 0.5 mm. Prepared is one having a phosphor bronze anchor connector main body having a portion and a brass guide pin, and provided as a reference anchor connector with a connecting cylinder portion having a length of 40.0 mm and a thickness of 0.5 mm. Prepared phosphor bronze.

[0022]

[Table 1]

As is clear from the measurement results, the product of the present invention has significantly improved connection strength as compared with the reference product. This is because the guide pins 8 are inserted into the connecting cylinders 4A and 4B, and the guide pins 8 support the connecting cylinders 4A and 4B from the inside.

[0024]

[Effect of the device]

 As described above, according to the present invention, since the connecting tube is supported from the inside by the guide pin, the inner conductor tube gripping force is improved, and even if the connecting tube is shortened, it is sufficient. The tube gripping force can now be obtained. In addition, since the guide pin projects from the tip of the tube, the tip of the tube can be seen through the fastening flange even if the tube is shortened. Therefore, it is possible to shorten the length of the connecting tube to an extent sufficient for electrical connection to the inner conductor tube, and the inner tube is deformed due to the excessively long tube section, causing deformation of the inner conductor. The inconvenience such as incomplete electrical connection with the pipe and damage to the anchor connector itself and the internal conductor pipe did not occur.

Furthermore, since the connecting cylinder can be shortened, the anchor connector can be made smaller and lighter, and further, the coaxial connector can be made smaller and lighter.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an internal structure of a coaxial connector according to an embodiment of the present invention.

FIG. 2 is a half sectional view showing a structure of an anchor connector of a coaxial connector in an example.

FIG. 3 is a diagram showing a state in which the coaxial connector of the embodiment is being connected.

FIG. 4 is a half sectional view showing an internal structure of a conventional coaxial connector.

FIG. 5 is a diagram showing a state in which a coaxial connector of a conventional example is being connected.

[Explanation of symbols]

 2 Anchor connector 4A, 4B Connection cylinder 6 Elasticity forming slit 8 Guide pin 30A, 30B Connector member 31 Internal conductor pipe 32 External conductor pipe 33 Fastening flange

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Akio Kusunii 1-17-1 Aoki, Kawaguchi City, Saitama Sanei Denki Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A pair of connector members (30A, 30B), each of which has an outer conductor pipe (32) and an inner conductor pipe disposed in the outer conductor pipe (32). (31) and,
The outer conductor tubes (32) are joined to each other by abutting the fastening flange portions (33) provided on the outer peripheral edges thereof, and the inner conductor tubes (31) are interposed between the anchor connector (2). A connection structure of coaxial connectors connected by means of the anchor connector (2), wherein the anchor connector (2) is provided with connecting cylinder portions (4A, 4B) fitted in the inner conductor pipe (31) at both ends thereof. , The connecting cylinder (4A, 4B) is formed with an elastic force forming slit (6) along the axial direction, and the connecting cylinder (4A, 4B) is provided with a guide pin (8). Connect the pin tip (8b) to the connecting tube (4A, 4B)
A connection structure for a coaxial connector, which is inserted in a state of being protruded from the connector.