A connecting device for coaxial conductors

Abstract: The present invention relates to a connecting device for coaxial conductors, comprising a terminal strip incorporated in a multipolar contact device. According to the invention, one end of a connecting member (6) has the form of a sleeve (9) which is firmly pressed into electrically-conducting contact with an exposed outer end of the screen (10) of the coaxial conductor (5). The other end of the connecting member (6) has the form of a flat, square plate (11) having provided in the corners thereof holes (12) for electrical contact with corresponding pins (3) in the terminal strip (2) and with a free opening (13) located centrally in relation to the holes (12) and encircling a corresponding, centrally located pin (4) in the terminal strip (2). The central conductor (14) of the coaxial conductor (5) is soldered or wired to the central pin (4).

Description: TECHNICAL FIELD The present invention relates to a connecting device for coaxial conductors, comprising a terminal strip incorporated in a multipolar contact device. BACKGROUND ART A connecting device for coaxial conductors is known from SE-B-8106104-6. In the case of this known connecting device, the screening sleeve of a coaxial conductor is inserted between four pins in the terminal strip of the connecting device, and the central conductor of the coaxial conductor is soldered to a pin located centrally in relation to said four pins. The screening sleeve is provided with longitudinally extending slots which are somewhat shorter than the pins, so that when the screening sleeve is inserted between the pins, said pins engage with the slots and elastically retain the sleeve. The sleeve may also be soldered to the pins, so as to improve sleeve-retention. The drawback with this known connecting device is that it lacks the possibility of running tests under traffic conditions, i.e. when the connecting device is connected to a corresponding contact device in, for instance, telecommunication equipment. DISCLOSURE OF THE INVENTION The object of the present invention is to provide a connecting device for coaxial conductors which will enable tests to be run during traffic, i.e. when the connecting device is connected to associated equipment. This object is achieved with a connecting device having the characteristic features set forth in the accompanying claims. The invention will now be described in more detail with reference to an exemplifying embodiment thereof illustrated in the accompanying drawing. BRIEF DESCRIPTION OF THE DRAWING Figure 1 is a side view of an inventive connecting device. Figure 2 illustrates the connecting device provided with a casing, and also shows the possibilities of carrying-out tests with a testing device shown in broken lines. Figure 3 is a rear view of a duplicate connecting device, i.e. a view from above in Figure 1. Figure 4 illustrates in larger scale a number of the components of the connecting device. BEST MODES OF CARRYING OUT THE INVENTION Figure 1 illustrates an inventive connecting device 1 from one side thereof. The connecting device 1 includes a terminal strip 2 incorporated in a multipolar contact device and intended to be plugged into a corresponding multipolar contact device. The terminal strip 2 has rearwardly projecting contact pins 3 and 4, to which the coaxial conductor or cable 5 is connected electrically with the aid of a connecting member 6, as explained in more detail herebelow. The connection is configured so that the coaxial conductor 5 is displaced laterally in relation to the pins 3 and 4 in the terminal strip 2. This makes the pins 3 and 4 accessible to a test device 7, illustrated in broken lines in Figure 2, even when the connecting device 1 is plugged into a corresponding contact device. As shown in Figure 2, the connecting device 1 is provided with a casing 8, which functions to screen and protect the outwardly projecting pins in the terminal strip and also to lock the connecting device 1 in its plugged-in position in a corresponding contact device. The casing may also be provided with a cable lock (not shown) for locking and protecting the coaxial conductor and the connecting member against mechanical damage. Figure 3 shows the inventive connecting device from the rear, i.e. from above in Figure 1. In this case, the connecting device 1 is duplicated, i.e. intended for two coaxial conductors 5, which are connected to corresponding pins 3 and 4 in the terminal strip 2 via connecting members 6. The connecting member 6 which functions to connect the coaxial conductor 5 to corresponding pins 3 and 4 will now be described in more detail with reference to Figure 4. One end of the connecting member 6 has formed thereon a sleeve 9 which is firmly pressed into electrically-conductive contact with the screen 10 of the coaxial conductor 5, said screen being exposed at the outer end of the coaxial conductor. The other end of the connecting member has the form of a square plate 11 and a hole 12 is punched in each of the four corners of the square. The plate is provided with an opening 13 centrally in relation to the holes 12. The plate 11 is disposed on the terminal strip 2 so that the pins 3 will pass through corresponding holes 12. The plate 11 is soldered or wired to the pins 3 and is thus in electrically-conducting contact therewith. The central opening 13 in the plate 11, on the other hand, has dimensions such that the plate 11 will not be in electrically-conducting contact with the corresponding centrally located pin 4 in the terminal strip. The pin 4 is soldered or wired to the central conductor 14 of the coaxial conductor 5. In order to improve attachment of the connecting member 6 to the coaxial conductor 5, a tube 15 may be placed between the central conductor 14 of the coaxial conductor 5 and the exposed screen 10. The tube 15 is preferably serrated, in order to improve contact between the connecting member 6 and the screen 10 and improve retention at the central conductor 14. It will be understood that the invention is not restricted to the aforedescribed and illustrated embodiment, and that modifications can be made within the scope of the following claims.

Claims: A connecting device for coaxial conductors, comprising a terminal strip with projecting contact pins for being incorporated in a multipolar contact device, characterized in that for electrically connecting the conductors to the pins, one end of an electrically connecting member (6) has the form of a sleeve (9) for being pressed firmly into electrically-conductive contact with an exposed outer end of the screen (10) of the coaxial conductor (5); and in that the other end of the connecting member (6) has the form of a flat, square plate (11), in that holes (12) are provided in the corners of the plate for electrical contact with the pins (3) in the terminal strip (2) corresponding with said holes, and with an opening (13) which is located centrally in relation to said holes (12) and which encircles a corresponding, centrally located pin (4) in the terminal strip (2), the central conductor (14) of said coaxial conductor (5) being intended to be soldered or wired to the central pin (4). A connecting device according to Claim 1, characteriz ed in that the connecting member (6) is bent so that the sleeve (9) will extend in the same direction as the pins (3, 4) projecting from the terminal strip (2), but displaced laterally in relation to said pins. A connecting device according to Claim 2, characterized in that the square plate (11) of the connecting member (6) is soldered firmly to the pins (3). A connecting device according to Claim 2, characterized in that the square plate (11) of the connecting member (6) is wired firmly to the pins (3).

Inventors: SOEDERBERG HAKAN AXEL, SOEDERBERG, HAKAN AXEL, Söderberg, Hakan Axel
Applicants: ERICSSON TELEFON AB L M, TELEFONAKTIEBOLAGET L M ERICSSON
Application year: 1990
Main classification: H01R9
IPC codes: H01R9