JPH0345421Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a coaxial connector used for connecting high frequency coaxial transmission lines of communication equipment.

[Conventional technology]

In electronic communication equipment, many coaxial connectors are used as input/output terminals of high-frequency circuits to exchange signals. As an example of this type of coaxial connector, a coaxial connector used in a VHF band frequency circuit is shown in FIG. This figure shows the male and female connectors combined.
The male connector is shown on the left side of the figure, and the female connector is shown on the right side.

The male connector includes a center conductor 1 and an outer conductor 3' disposed around the center conductor 1 with an insulator 2 interposed therebetween. The center conductor 1 has a pointed male contact 1a at its tip.
The other end is shaped like a round bar, and when used, a printed board is inserted and connected to the circuit by soldering or the like. Furthermore, a groove portion 3a' is provided on the outside of the outer conductor 3' over the entire circumference.

On the other hand, the female connector includes a center conductor 6 and an outer conductor 8' disposed around the center conductor 6 with an insulator 7 interposed therebetween. The center conductor 6 is divided into a plurality of parts at one end to form a depressed female contact 6a, into which the male contact 1a of the center conductor 1 of the male connector is inserted. Further, the other end of this center conductor 6 is connected to a solder pot 6b that is connected to the center conductor of the coaxial cable inserted from the coaxial cable insertion part 9.
Constructed as. Further, the outer conductor 8' is formed into a larger cylindrical shape than the male outer conductor 3', and has a convex portion 8 that fits into the groove 3a' of the male connector.
It is formed by pointing a′ inward.

Note that the outer conductor 8' of this female connector is
Further, a spring 11 and a hood 12 are integrally attached to the outside. These act to prevent the inner diameter of the convex portion 8a' of the female external conductor 8' from expanding even when the male connector and the female connector are repeatedly mated. restraining the expansion of the conductor 8' in the outer diameter direction;
Even if it spreads, it is configured to stop at the hood 12.

Note that 10 is a screw screwed into the end of the female external conductor 8'.

[Problem that the invention attempts to solve]

In the above-mentioned conventional coaxial connector, the outer conductors 3' and 8' of the male and female connectors are brought into contact with each other through the convex portion 8a' of the female outer conductor 8' and the groove of the male outer conductor 3'. This is done with the side surface of the groove 3a'. Therefore, when the female external conductor 8' spreads outward, the contact position and state of the external conductors change, and this changes due to external vibrations and shocks, resulting in discontinuity in the frequency characteristics of return loss, and the signal It is easy to get into a state close to instantaneous shutdown.

In order to suppress this, the spring 11 and the hood 12 are provided as described above, but the female outer conductor 8' is made of brass material, and there is a distance of about 0.3 to 0.4 m between the inner diameter of the hood 12 and the outer conductor 8'. If the connector is pried during insertion and removal between the male and female connectors due to a gap, use spring 1.
1, it is impossible to maintain the outer diameter, and it is inevitable that the outer conductor 8' will spread outward.

The object of the present invention is to provide a small, high-performance coaxial connector that maintains stable contact even if it is strained when the connector is inserted or removed, and has good high frequency characteristics.

[Means for solving problems]

The coaxial connector of the present invention is a coaxial connector having a male connector and a female connector that are coupled in the coaxial direction. A spring-like external conductor contact is attached thereto, and a recess into which the external conductor contact fits and contacts is formed on the inner peripheral surface of the female connector which is fitted to the outside of the external conductor of the male connector. However, the structure is such that the two can also be connected using this contactor.

Further, a guide portion having an outer diameter approximately equal to the inner diameter of the outer conductor of the female connector is formed at the tip of the outer conductor of the male connector to prevent straining between the two.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a coaxial connector according to an embodiment of the present invention, and this figure shows a state in which a left male connector and a right female connector are connected. Further, in the figure, the circuit connected to the male connector and the coaxial cable connected to the female connector are omitted, and the same parts as in FIG. 2 are given the same reference numerals.

In FIG. 1, the male connector has a round rod-shaped center conductor 1, and an insulator 2 is placed around the center conductor 1.
The outer conductor 3 is disposed through the outer conductor 3. center conductor 1
The tip is formed into a pointed shape to form a male contact 1a, and the other end is connected to a circuit not shown. Also,
The outer conductor 3 is provided with a groove 3a around the entire outer circumferential surface, and the outer conductor contact 5 is fitted into the groove 3a. This external conductor contactor 5 has contact pieces 5A arranged in the circumferential direction, each extending in the outer radial direction and having a plurality of spring actions, and the tip of each contact piece 5A has an end portion. A curved portion 5a is formed which is bent inward.

The tip of the outer conductor 3 is configured to enter the outer conductor of a female connector described later as a guide portion 3b, and an auxiliary outer conductor 4 is press-fitted and fixed to the base of the outer conductor 3. When using the connector, the end of the connector is inserted into the printed board and fixed by soldering.

On the other hand, the female connector has a center conductor 6 and a cylindrical outer conductor 8 disposed around the center conductor 6 with an insulator 7 interposed therebetween. The center conductor 6 has a female contact 6a on the side to be fitted with a male connector, and a solder pot 6b on the opposite end. Coaxial cables (not shown) inserted through cable insertion portions 9 formed in 90 degrees different directions are connected to the solder pots 6b by soldering.

Further, the outer conductor 8 is formed to have a diameter that allows it to fit into the male outer conductor 3, and a groove 8a is provided on the inner surface of the outer conductor 8 over the entire circumference.
This groove portion 8a corresponds to each contact piece 5A of the external conductor contactor 5 fitted to the male external conductor 3,
The curved portions 5a of each of these contact pieces 5A are brought into contact by spring force.

Note that the center conductors 1 and 6 of the male connector and the female connector are each formed with a radial convex portion, which bites into the insulators 2 and 7, respectively, to increase the fixing force. Further, the screw 10 is for preventing leakage.

Therefore, according to the coaxial connector having this configuration, when the male connector and the female connector are connected as shown in FIG. Needless to say, the female external conductor 8 is fitted into the male external conductor 3 and connected to the male external conductor 3 to make the necessary connection. In addition, in this configuration, the curved portion 5a at the tip of the contact piece 5A of the external conductor contactor 5 fits into the groove portion 8a inside the female external conductor 8 to facilitate connection between the two. Note that this external conductor contact 5
When the male connector and the female connector are connected and the curved portion 5a is fitted into the groove 8a, a click-like tactile sound such as a "click" is generated to enable correct connection of the two.

Further, the guide portion 3b provided on the external conductor 3 of the male connector can ensure the coaxial state of the male connector and the female connector, and can prevent both connectors from becoming oblique and causing strain. As a result, in the coaxial connector of the present invention, no discontinuous portion occurs in the contact between the male connector and the female connector, and stable contact can be obtained and high frequency characteristics can be improved.

Here, the female contact 6a of the female connector is not surrounded by an insulator when compared with the conventional structure, but when the connector is mated, the guide portion 3b of the male external conductor 3 is It acts as a guide and can be connected to the male contact 1a without any damage.

[Effect of idea]

As explained above, the present invention has a groove formed on the outer circumferential surface of the outer conductor of a male connector, in which a spring-like outer conductor contact expanded in the radial direction is attached, and The surface has a recess into which the external conductor contact fits and contacts, and the structure is such that the connection can be made not only between the two external conductors but also through this contact, resulting in a stable connection. Contact can be maintained, and no momentary contact failure will occur even if external vibrations or shocks are applied. Also,
The guide portion provided at the tip of the external conductor of the male connector allows the coaxiality of both connectors to be maintained and prevents twisting when the connector is inserted or removed. Thereby, good and stable high frequency characteristics can be obtained without causing discontinuity in the frequency characteristics of return loss.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing a coaxial connector according to an embodiment of the present invention in a connected state, and FIG. 2 is a vertical sectional view showing a coaxial connector of a conventional structure in a connected state. 1...Male center conductor, 1a...Male contact, 2
...Insulator, 3,3'...Male external conductor, 3a,
3a'...Groove portion, 3b...Guide portion, 4...Auxiliary external conductor, 5...Outer conductor contactor, 5A...Contact piece, 5a...Bent part, 6...Female center conductor, 6a...
...Female contact, 6b...Solder pot, 7...
Insulator, 8, 8'...Female external conductor, 8a...Concave portion, 8a'...Convex portion, 9...Coaxial cable insertion portion,
10...screw, 11...spring, 12...hood.

Claims (1)

[Claims for Utility Model Registration] (1) In a coaxial connector in which a male connector and a female connector each having a center conductor and an outer conductor are coaxially coupled to electrically connect the conductors to each other, A female connector that has a groove formed on the outer circumferential surface of the outer conductor, and is fitted with a spring-like outer conductor contact that expands in the radial direction within the groove, and is fitted to the outside of the outer conductor of the male connector. A coaxial connector characterized in that a recess is formed on an inner circumferential surface of the coaxial connector, into which the external conductor contact is fitted and contacted. (2) Utility model registration claim 1, in which a guide portion having an outer diameter approximately equal to the inner diameter of the outer conductor of the female connector is formed at the tip of the outer conductor of the male connector.
Coaxial connector as described in section.