IE53758B1

IE53758B1 - Connection device for coaxial cables

Info

Publication number: IE53758B1
Application number: IE2412/82A
Authority: IE
Original assignee: Ericsson Telefon Ab L M
Priority date: 1981-10-15
Filing date: 1982-10-05
Publication date: 1989-02-01
Also published as: SE428164B; EP0091454B1; DK154530C; AU8992382A; FI69729B; IT1207311B; SE8106104L; WO1983001540A1; EP0091454A1; HU192111B; DE3269655D1; YU230182A; JPS58501748A; MY8700381A; YU43529B; NO158040C; DK272783A; FI831472A0; IE822412L; IT8223785A0

Abstract

Connection device for connecting a coaxial cable to a component on a circuit board. The circuit board (3) is of a type provided with rows of connection pins (14) along one side, said pins coacting with connection blocks (5) having female contacts (6) along one side and connection pins (7) associated therewith along the other side. The screening sleeve (8) of a coaxial cable may be thrust between four pins (7a-7d) on the connection block, and a pin (9), centrally situated in relation to these four pins, is soldered to the central conductor (11) of the coaxial cable. The screening sleeve is provided with longitudinal slits (12) which are approximately as wide as the thickness of the pins, but are shorter than the pins, so that when the sleeve is thrust between the pins the latter come into engagement with the edges of the slits and retain the sleeve (8).

Description

The invention relates to a connection device for connecting a coaxial cable to a component arranged on a circuit board, of the type having one edge provided with rows of connecting pins which coact with connection blocks containing female contacts on one side and connection pins associated with these on the other side.

Relatively expensive arrangements are necessary for connecting a coaxial cable to a component on a circuit board of the type mentioned, since such a cable cannot be connected quite simply to the connection pins on the edge of the board, it being necessary to replace the pins with coaxial connection sleeves in which the pin of the coaxial connector can be inserted. Such a device is described in DIN No. 4162.

The invention enables a coaxial cable to be connected to a component mounted on a circuit board, while using the customary connnection pins.

The present invention provides a connection device for connecting a coaxial cable to a component arranged on a circuit board, of the type having one edge provided with rows of connection pins, which coact with connection blocks having female contacts on one side and connection pins associated with said female contacts along the other side, wherein the inner contour of four pins in the connection block lie along a circle, the diameter of which - 3 is somewhat less than the outer diameter of a screening sleeve of the said coaxial cable, and a pin centrallypositioned in relation to said four pins is adapted for soldering to the central conductor of the coaxial cable, the sleeve being provided with longitudinal slits which are approximately just as wide as the thickness of the pins but shorter than the pins, so that when the sleeve is thrust between these pins the pins glide in the slits until the end portions of the pins come into engagement with end walls of the slits and are deflected outwardly for retaining the sleeve.

The invention is explained in detail below with the aid of an embodiment, while referring to the appended drawing, on which Figure 1 schematically illustrates in perspective a connection device in accordance with the invention, Figure 2 being a side view and Figure 3 a plan view of the connection device.

Figure 1 illustrates the inventive connection device in perspective. A coaxial cable denoted by 1 is to be connected to a component 3 mounted on a circuit board 2. Along its edge portion the board 2 is provided with contact blocks 4, of which one is shown lifted up in relation to the circuit board, for the sake of clarity.

The block 4 is provided along one side with rows of bent pins 15, which are soldered to the circuit board and via - 4 printed conductors 31, 32, 33, for example, are connected to the different components. Along its other side the block 4 is provided with straight pins 14, which are fixed in rows of holes in the same way as the pins 15, for engagement with a connection block 5 having female contacts 6. In the extension of the female contacts the connection block 5 is provided with connection pins 7, forming rows in the same way as the other pins in block 4.

The coaxial cable 1, which is to be connected to the connection block 5, has a cylindrical screening sleeve 8 connected to its outer conductor and having an outer diameter such that it can be inserted between four pins laid on the block 5, The sleeve 8 is provided with four slits 12 which are shorter than the pins 7. In assembling, the central conductor 1 is first soldered to the central pin 9, subsequent to which the sleeve 8 is thrust in between the pins 7a-7d such that these engage in the slits. Since the pins are pointed, they are pressed outward as the sleeve is pressed down, so that the sleeve is kept in a fixed position hy engagement between the pins and the edges of the slits. There has thus been obtained a removable coaxial connection from the cable 1 to the component 3.

Figures 2 and 3 respectively show, in front and plan 53759 - 5 views, the inventive coaxial connection before, and after, the sleeve has been thrust in between the pins. The inner contour of the pins lies along a circle having a somewhat smaller diameter than that of the sleeve. When the sleeve is pressed down, the pins 7 glide in the slits 12 until they come into contact with the end wall of the slits, and since the ends of the pins are bevelled off, the pins glide obliquely outwards along the outer wall of the sleeve, as will be seen from the right-hand portion of Figure 2. Further to the elastic retention, it is also possible to solder the pins to the wall of the sleeve 8, as indicated by 16 in Figure 2.

It will be seen that by the invention there have been obtained a much simpler connection device than the previously used devices, when existing standard connection devices having screening sleeves provided with longitudinal slits have been used.

Claims

1. Connection device for connecting a coaxial cable to a component arranged on a circuit board, of the type having one edge provided with rows of connection pins, which 5 coact with connection blocks having female contacts on one side and connection pins associated with said female contacts along the other side, wherein the inner contour of four pins in the connection block lie along a circle, the diameter of which is somewhat less than the outer 10 diameter of a screening sleeve of the said coaxial cable, and a pin centrally positioned in relation to said four pins is adapted for soldering to the central conductor of the coaxial cable, the sleeve being provided with longitudinal slits which are approximately just as wide as 15 the thickness of the pins but shorter than the pins, so that when the sleeve is thrust between these pins the pins glide in the slits until the end portions of the pins come into engagement with end walls of the slits and are deflected outwardly for retaining the sleeve. 20

2. Connection device as claimed in claim 1 wherein the screening sleeve is connected to the pins by welding or soldering.

3. A connection device substantially as herein described with reference to and as shown in the accompanying 25 drawings.