JPH0425823Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a terminal connection device, and particularly to a terminal connection device that allows many coaxial signal lines to be mounted together or individually at high density in circuit testing equipment. Regarding equipment.

[Prior art and its problems] As the degree of integration of integrated circuits increases, the number of terminals increases and the operating frequency becomes higher. A test device that tests such a large number of integrated circuits requires a high-density, high-frequency terminal connection device to change connections for each integrated circuit under test (DUT). For this reason, a terminal connecting device has been devised as disclosed in Utility Model Application No. 61-120219 ``Terminal Connecting Device'' filed by the applicant of the present invention.

FIG. 2 shows an example of a terminal connection device. In the figure, connectors 2 and 3 are a pair of devices that are connected to each other. Inside the outer cylindrical conductors 24, 34, a socket 23 supported by insulators 25, 35 and a conductor 33 are provided on the central axis. A known coaxial cable (not shown) to be connected is inserted into the connector 2 from the left and into the connector 3 from the right. In the connectors 2 and 3, the outer conductor of the inserted coaxial cable is introduced into the gaps 27 and 37 between the cylindrical collars 29 and 39 and the outer cylindrical conductors 25 and 35, respectively, and deforms the cylindrical collars 29 and 39. , are connected to the external cylindrical conductors 25, 35. The center conductor of the coaxial cable is inserted through the circular tubes 26 and 36 together with an insulator that covers the center conductor, and is inserted into the socket 2.
3. The conductor 33 is soldered at its respective ends 52 and 72. A contact pin 5 having a well-known spring-loaded contact 51 is press-fitted into the socket 23. On the other hand, the conductor 33 is provided with a disc-shaped polar plate 7, and the surfaces 71 of the disc come into contact with each other when the connectors 2 and 3 are placed close to each other.

The outer cylindrical conductor 34 of the connector 3 is provided with a conductor socket 42 having substantially the same diameter as the conductor 23, into which a contact pin 4 substantially the same as the contact pin 5 is press-fitted. By bringing the connectors 2 and 3 close to each other, the contact 43 of the contact pin 4 comes into contact with the end surface 6 of the outer cylindrical conductor 24, forming an outer conductor of the coaxial transmission line.

The connecting device shown in FIG. 2 has the disadvantage that the structures of the connectors 2 and 3 are different and the manufacturing process is complicated. Furthermore, the conductor 4 is connected to the external cylindrical conductor 34 of the connector 3.
2, the outer cylindrical conductor 34 becomes thicker and the diameter of the connector 3 increases, making high-density packaging difficult.

[Purpose of invention]

Accordingly, an object of the present invention is to provide a connecting device in which the connectors to be brought into contact have substantially the same structure, have a small diameter, and are suitable for high-density packaging.

[Summary of the idea]

In one embodiment of the present invention, first and second conductors arranged symmetrically inside a cylindrical conductor are supported by an insulator. The first and second conductors have the same diameter and are interchangeable. Further, when the first conductor is a socket and has a spring-biased contact pin, the second conductor is provided with a disc electrode, and one of the first and second conductors is connected to the outer conductor of the coaxial cable via a cylindrical conductor. be done. The other conductor is connected to the center conductor of the coaxial cable.

[Example of idea]

FIG. 1 is a vertical cross-sectional view C, an AA' cross-sectional view A, and a BB' cross-sectional view B of a terminal connecting device according to an embodiment of the present invention. As shown in the figure, the connectors 2 and 3 are brought into close proximity to each other with their axes aligned, and thereby come into contact with each other to complete the connection. In FIG. 1, parts having the same functions and performance as those in FIG. 2 are given the same reference numerals. The connectors 2 and 3 have the same structure by replacing the positions of the socket 42, contact pin 4, conductor 33, and disk 7. Therefore, the outer diameter and length of socket 42 and conductor 33 are substantially the same.

As shown, one of the socket 42 and the conductor 33 is inserted into the bottom slot 9 of the outer cylindrical conductor 34 and electrically connected to the outer conductor of the coaxial cable. Further, the center conductor of the coaxial cable inserted from the circular tube 36 is soldered to the other end of the socket 42 and the conductor 33.

A contact 43 is provided in the sleeve 41 of the contact pin 4 so as to be able to move in and out and is biased outward by a spring, and can be inserted into and removed from the socket 42 as a unit.

The positioning pin 8 fits into a key groove of a support (not shown) into which the connectors 2 and 3 are inserted and fixed, aligning the opposing contacts 43 of the connector and the electrode 71, and fixing the insulator 35. The connection of the connecting device is performed by bringing the contact 43 of one of the connectors 2 and 3 into contact with the electrode 71 of the other, and fixing the connectors 2 and 3 in close proximity.

As is clear from the above embodiments, the external cylindrical conductor can be replaced with a shape other than a cylinder, as long as it is possible to align the contacts 43 and electrodes 71 of the pair of connectors 2 and 3. It can be anything. For example, the above-mentioned alignment and fixation of the insulator can be performed without the need for the positioning pins 8 by first manufacturing the external cylindrical conductor 34 in a circular shape and then applying pressure to make it approximate an oval or rectangular shape.

Further, the arrangement of the conductors 33 and sleeves 42 in the connectors 2 and 3 is made to match the characteristic impedance of the coaxial line to be connected.

[Effect of idea]

As can be seen from the embodiments described above, implementation of the present invention results in a reduction in the thickness of the outer cylindrical conductor and a reduction in the diameter of the connector at least as much as the diameter of the sleeve 42.

Further, since the external cylindrical conductor also functions as a shield, electromagnetic interference with the outside does not deteriorate.

Furthermore, the construction of the mating connectors is substantially the same, making manufacture simple and therefore inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a terminal connecting device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a conventional terminal connecting device. 2, 3... Connector, 4, 5... Contact pin, 6... End face of external inner cylindrical conductor 24, 7... Disc-shaped electrode plate, 8... Positioning pin, 9... Bottom slot, 23 , 42... socket, 33... conductor,
24, 34... external cylindrical conductor, 25, 35...
Connecting body, 26, 36... Circular pipe, 27, 37... Gap, 28, 38... End of external cylindrical conductor, 2
9, 39...Cylindrical collar, 42...Sleeve, 4
3, 51...Contact, 52...Socket 23
end of the conductor 33, 72... end of the conductor 33;

Claims (1)

[Claims for Utility Model Registration] (1) Inside a cylindrical conductor having first and second ends,
first and second internal conductors are supported apart from each other at symmetrical positions in the radial plane via an insulator and extend in the axial direction; The inner conductor has a protruding electrode plate, the second inner conductor protrudes in and out, and has a contact pin biased by a spring in the protruding direction; A terminal connection device in which one of two internal conductors is connected to an outer conductor of a coaxial line through the cylindrical conductor, and the other is connected to a center conductor of the coaxial line. (2) The terminal connection device according to item 1, further comprising a protrusion on the outer circumferential surface of the cylindrical conductor that protrudes in the radial direction to position the cylindrical conductor with respect to a mounting member.