JPS596623Y2 - Coaxial cable connector - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a coaxial cable connector, and an object of the present invention is to provide a coaxial cable connector that can connect a large number of coaxial cables to a printed circuit board in a particularly small area.

Conventional coaxial cable connectors have a large diameter, so if a large number of coaxial cables are connected to and removed from a device using the connector, the installation area of the connector becomes large.

Furthermore, since conventional connectors must be connected and disconnected one by one, it is time consuming and troublesome to connect and disconnect a large number of coaxial cables.

The purpose of this invention is to provide a coaxial cable connector that allows many coaxial cables to be attached and detached in a small area and that does not cause impedance disturbance.

An embodiment of this invention will be described below in detail with reference to the drawings.

FIG. 1 shows an embodiment of this invention.

In the figure, reference numeral 1 indicates a connector main body according to this invention, and reference numeral 2 indicates a printed circuit board that supports the receiving portion of the connector 1.

The connector body 1 includes a conductive housing 3, a contact 5 supported by the conductive housing and connected to a coaxial cable 4, a means 6 for pressing the housing 3 against the printed circuit board 2, and a means 6 for pressing the housing 3 against the printed circuit board 2. It is composed of a means 7 for contacting the wiring portion and a cover 8.

The contact 5 can be configured as shown in FIG. 2, for example.

In FIG. 2, reference numeral 9 indicates a cylindrical conductor, and 10 indicates a central conductor that is insulated and supported at the axis of the cylindrical conductor 9.

In other words, the center conductor 10 is supported at the axis of the cylindrical conductor 9 by the insulating materials 11a and 11b, and is supported such that there is a predetermined distance between the center conductor 10 and the cylindrical conductor 9. It is made to be equal to the characteristic impedance.

The diameter of the cylindrical conductor 9 is selected to be approximately equal to the diameter of the outer conductor of the coaxial cable 4, and the connecting pipe 1 attached to the cylindrical conductor 9
Press fit the outer conductor of the coaxial cable 4 into the hollow part of 2 and connect the connecting pipe 1.
2 is soldered to the outer conductor of the coaxial cable 4, and the cylindrical conductor 9 and the outer conductor of the coaxial cable 4 are electrically connected and mechanically also firmly connected.

The core wire of the coaxial cable 4 is connected to the center conductor 10.

A contact 14 is provided on the tip side of the center conductor 10 and is always biased toward the tip side by a spring 13.

The conductive housing 3 has a plurality of holes equal to the outer diameter of the cylindrical conductor 9 that holds the contacts 5. The contacts 5 are press-fitted into these holes, and the contacts 5 are formed on one side of the housing 3.
The contactor 14 of the contactor 14 is projected and supported.

The step 7 that brings the housing 3 into contact with the wiring part of the printed circuit board 2 is the center conductor 10 used for the contact 5 described earlier.
can be used as is.

That is, the housing 3 is also formed with a hole having the same diameter as the central conductor 10 of the contact 5, into which the means 7 is press-fitted.

Therefore, the contact 14' protruding from the tip of the means 7 has the same electrical potential as the housing 3.

Regarding the arrangement of the contacts 5 and the means 7, for example, as shown in FIG. 3, one means 7 is provided for two contacts.

Means 6 for pressing the housing 3 onto the printed circuit board 2
is composed of a knob 6a, a shaft 6b rotated by this knob, and a male threaded portion 6C formed at the tip of this shaft 6b, and this male threaded portion 6C is formed into a female threaded portion formed on the printed circuit board 2 side. The housing 3 is pressed against the printed circuit board 2 by screwing and tightening the housing 3 to the printed circuit board 2.

Note that two guide pins 15 and 16 having different diameters are provided at both ends of the housing 3 to protrude toward the printed circuit board 2, and these guide pins 15 and 16 engage with holes formed in the printed circuit board 2. The positioning between the housing 3 and the printed circuit board 2 is performed by this.

A cover 8 is placed over the housing 3.
A cable clamp 17 is attached to one side of the cable clamp 17, a coaxial cable bundle 18 is held by the cable clamp 17, the coaxial cable bundle 18 is introduced into the cover 8, and each coaxial cable 4 is connected to the contact 5.

The printed circuit board 2 is formed with a conductor 19 that contacts the contact 14 of the contact 5 and a wiring section 20 that contacts the contact 14' of the means 7. The circuit and the coaxial cable are connected.

As explained above, according to this invention, a large number of coaxial cables can be connected to and disconnected from a circuit simply by attaching and detaching the housing 3 to and from the printed circuit board 2. Regardless of the number of coaxial cables, cables can be attached and detached in an extremely short time. can be done.

However, since the diameter of the contact 5 is selected to be the same as the diameter of the outer conductor of the coaxial cable 4, the contact 5 becomes thinner, so the area of the housing 3 can be kept small even if a large number of cables 4 are configured to be attached and detached. There is.

Furthermore, since the cylindrical conductor 9 and the center conductor 10 are arranged with a predetermined distance between them so that the characteristic impedance is equal to the characteristic impedance of the coaxial cable 4, the impedance at the point of the contact 5 is not disturbed and reflection etc. You can get a connector that doesn't wake up.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of this invention, Fig. 2 is a sectional view illustrating the structure of a contact used in the connector of this invention, and Fig. 3 is a front view of a part of the connector of this invention. It is a diagram. 2: printed circuit board, 3: metal housing, 4: coaxial cable, 5: contact, 6: means for press-contacting the housing to the printed circuit board.

Claims (1)

[Scope of utility model registration request] a cylindrical conductor press-fitted into a hole formed in a conductive housing and having a diameter approximately equal to the outer conductor of the coaxial cable; a center conductor insulated and supported at the axial center of the cylindrical conductor;
A contact provided at the tip of the center conductor and biased in a direction protruding from the center conductor, means for press-contacting the housing toward the printed circuit board, and means for bringing the housing into contact with the wiring section of the printed circuit board. For coaxial cables, the outer conductor of the coaxial cable is connected to the cylindrical conductor, the core wire of the coaxial cable is connected to the center conductor, and the coaxial cable is connected to the printed circuit board through the contactor and the housing. connector.