WO1987001520A1

WO1987001520A1 - Aerial plug socket

Info

Publication number: WO1987001520A1
Application number: PCT/EP1986/000497
Authority: WO
Inventors: Manfred Burkert; Sieghard Heise
Original assignee: Hans Kolbe & Co.
Priority date: 1985-08-28
Filing date: 1986-08-23
Publication date: 1987-03-12
Also published as: EP0271490A1; ES2001122A6; DE3682779D1; DE3530722A1; EP0271490B1; DE3530722C2; ATE70146T1

Abstract

An aerial plug socket for high-frequency ranges has a metal base, which carries the coaxial plug elements for plugging-in the connection cables, and clamping devices arranged on the base, on the one hand for the inner conductor, and on the other for the outer conductor of each coaxial cable leading into the socket. The clamping system, in the case of the outer conductor, consists of a metal clamping arm pivotally arranged in front of the inner conductor clamping device, one clamping surface of the arm lying against the outer conductor and a metal clamping support facing the opposite clamping surface, whereby the clamping surface and clamping support hold the outer conductor in the operating position and grip it tightly. The clamping arm (15) is pivotally arranged around an axis (19) which seen from the insertion direction lies behind the inner conductor-clamping device (6, 13), and transversely to the connection cable longitudinal axis (19). The arm (15) is furthermore mounted on the base carrier (1) in lateral slideways (17) so as to move perpendicularly to the longitudinal axis of the connection cable, its upward movement being limited by stops, and it can be screwed into the operating position against the outer conductor.

Description

Antenna socket

The invention relates to an antenna socket for high frequency ranges according to the preamble of claim 1.

Antenna sockets previously on the market transmit frequencies up to approx. 860MHz in compliance with the requirements imposed on the HF-tightness and thus in connection with the connection technology of the coaxial cables for both the inner conductor and the outer conductor. Increasing numbers are now desired. To make antenna sockets suitable for very high frequencies in order to be able to transmit signals received from satellites after conversion and processing in the frequency range above 860MHz, especially in cable television systems. The transmission and decoupling of these very high frequencies places special demands with regard to HF tightness and, in connection therewith, with the connection technology of the Coaxial cable.

In the case of an antenna socket already in use with the features of the preamble of claim 1, the pivotable metal clamping arm acting in the manner of a clamp is only pivotable about an axis running parallel to the longitudinal axis of the coaxial cable to be inserted. The clamping surface and the clamping pad are smooth throughout. It has been shown that with the aid of such a clamping device for the outer conductor of the coaxial cable, the requirements with regard to HF tightness and the mechanics, in particular also with regard to strain relief, cannot be met. This applies in particular to the fastening and electrical connection of cables of different diameters.

The invention has for its object to make an antenna socket according to the preamble of claim 1 with respect to HF-tightness and thus the connection technology suitable for very high frequencies and in particular for frequencies up to about 1.6 GHz.

This object is achieved according to the invention in particular in that the clamping arm can be pivoted about an adapter lying in the insertion direction behind the inner conductor clamping device and extending transversely to the longitudinal axis of the connecting cable, and can be moved upward in side guides with limited stops perpendicular to the longitudinal axis of the connecting cable on the base support and in the operating position against the outer conductor is screwable. This ensures that even cables with different diameters can always be held over the entire area with complete electrical contact and can also be completely relieved of strain. In contrast to the known cells described in which Different diameters of the coaxial cables to be fastened can only be exerted on the outer conductor of the cable with part of the clamping surfaces and the clamping support, and the clamping arm according to the invention adapts to the different diameters of the cable outer conductors due to the swiveling and vertical displaceability on that a complete contact and complete pressure is always ensured in mechanical terms on the full clamping surface. Thus, a safe electrical contact and a safe strain relief is achieved even for the very high frequencies.

A particularly expedient design, which is also easy to handle, is achieved by the features of claim 2. The guides can be easily formed and fastened to the base support, and the clamping arm with its pivot pins can be easily inserted and a stop limitation can be made by simply deforming the upper slot ends.

A particularly favorable design both with regard to the contacting and with regard to the strain relief even with the most varied cable diameters is achieved by the ribbing according to claim 3. The effect of the clamping ribs is further enhanced by the design of the rib heights according to claim 4. With the same force development when the clamping arm is screwed on, the pressure on the outer conductor and also on the insulating cable sheath which is covered is stronger because of the reduced contact surface due to the ribbing, that is to say a line contact . The strain relief is thus decisively improved. In conjunction with the vertical displaceability of the clamping arm, an extraordinarily safe contact and fixing of the cable, which adapts to all diameters, is achieved overall. Fine improvement of the shielding effect, in particular with regard to the very high frequencies to be transmitted, is achieved with the measure according to claim 5. This shielding effect is significantly improved by the side shielding walls in accordance with the measure according to claim 6. The measure according to claim 7 in turn leads to a safe ground contact and thus to an even greater shielding effect of the clamping arm in connection with the shielding walls inside the box.

The measures according to claim 8 ensure that the swivel mechanism for the swivel arm only acts when the clamping arm has been pulled up to the limit stop within the lateral guides. The metal tongue acts in the manner of a spring tongue and thus leads to an automatic locking in the pivoting position of the clamping arm, so that the clamping arm cannot fall down unintentionally when the coaxial cable to be connected is installed.

In the case of an antenna socket for the simultaneous connection of two parallel coaxial cables, using the previously described and labeled features, the measure according to claim 9 has an extraordinarily simple design with the described safe contacting, strain relief and shielding.

In a further embodiment of the invention, the connection of the inner conductors of the coaxial cables to be connected is also decisively improved with regard to the described requirements for the very high frequencies. This is the case with an antenna socket in which each clamping device for the inner conductor consists of an abutment made of insulating material held on the base support with a connection contact leading to the inside of the socket and a pressing element a laying in the operating position against the inserted inner conductor and pressing this against the terminal contact pressure element made of insulating material achieved by the measures according to claim 10. With this configuration of the clamping device for the inner conductor, it is possible to achieve a mechanical and electrically safe contacting option which can make do with extremely small and short electrically conductive and thus RF energy-emitting components. An extremely compact design of the clamping device for the inner conductor is achieved, in which only the inner conductor of the cable to be connected and the short wire end resting on the abutment, and thus extremely small and short electrically conductive components, are present.

The measure of claim 11 ensures that when the pressure element is tightened, the inner cable conductor is deformed on the transverse end of the wire and thus an increase in the safety of the mechanical and electrical system of the inner conductor is achieved. This security can be increased by the measure according to claim 12, whereby an increased deformation of the inner conductor is achieved on the wire end.

The features and measures characterized in claims 13 to 16 serve to further develop the clamping device for the inner conductor according to the invention with regard to compactness, safe guidance and safe contacting and holding. All parts used are simply designed and securely arranged and guided together. Features, further advantages and details of the invention are explained with reference to an embodiment of the invention with reference to the drawing. Show it:

1 is a diagrammatic, exploded exploded view of an antenna socket according to the invention,

2 is a perspective view of the antenna socket with the clamp arm pivoted up,

Fig. 3 is a diagrammatic representation corresponding to Fig. 2 with: in the operating position pivoted and screwed clamping arm and

Fig. 4 is a detailed perspective view of the clamping device according to the invention for the inner conductor of the coaxial cable to be connected. The antenna socket initially has in the usual way a metal base support 1, which is also referred to as a chassis. The usual coaxial plug-in elements 2 (plug or socket) for the plug-in connection of connecting cables are arranged on this base support. On the underside is the usual circuit board 3, which carries the desired electrical components. Furthermore, the antenna socket is closed below by the closure parts 4, which need not be explained in more detail here. The antenna connector shown here is designed as a double connector in the usual way. The embodiment of the invention described below therefore always relates to the training for the connection of two coaxial cables. In the following, the clamping device according to the invention for the inner conductor of the coaxial cable to be inserted laterally into the antenna socket is first described. In recesses 5 in the metal base support two receptacles 6 made of insulating material are passed, which are held on a crossbar 7 made of insulating material below the base support. An abutment is formed in the recess 6 of each receptacle 6, as can be seen more clearly in a schematic illustration at 9 in FIG. 4. On this abutment 9 a wire end is placed transversely to the inner conductor 10 to be inserted (FIG. 4) of the coaxial cable to be connected, the further course of which is led downwards to the respective connection to the electrical components of the printed circuit board. The wire end 10 thus projects into the recess 8 transversely to the direction of insertion of the inner cable. Each receptacle 6 is block-shaped from insulating material with lateral guide walls, as shown in FIG. 1, and whose function will be described in the following. The connecting end of the wire end 10 forming the connection contact, which leads into the socket, runs in a slot in a guide wall of the receiving piece 6, in the exemplary embodiment in the guide wall on the left in each case.

The clamping device for the inner conductor also consists of a pressure element which consists of a guide piece 13 which can be tightened by a screw 12 in the direction of the abutment 9 and which is displaceably guided on and in the receiving piece 6 and which carries a pressure piece 14. The pressure piece 14 consists of insulating material. The rest of the guide piece 13 is either made of plastic or, if the strength requires it, of a firmer material than the pressure piece, in particular of metal. Each pressure piece 14, as can be seen when the parts in FIG. 1 are viewed together, is displaceably guided in the associated recess 6 of the receiving piece 6 surrounding the abutment 9. Fig. 4 shows the Füh tion piece 13 with its pressure piece 14 and the screw 12 on an enlarged scale, with respect to the abutment or receiving piece only with the parts useful for explanation. The recesses 8 are open in the direction of the coaxial cable to be inserted, the inner conductor to be inserted.

4 shows in detail, the surface of the abutment 9 is inclined transversely to the wire end 10, namely roof-shaped, profiled. Complementary to this, the associated pressure surface of the pressure piece 14 is profiled. If the pressure piece 14 is thus tightened against the abutment 9 with the inner conductor 10a inserted with the aid of the screw 12 and via the guide piece 13, the inner conductor 10a deforms in accordance with the upper profile running with the wire end 10 resting thereon and is thus securely contacted and mechanically fixed securely.

The clamping device for the outer conductor in the antenna socket according to the invention is designed in the following way: A clamping arm 15 can be pivoted above the base support 1 about an axis lying in the direction of insertion behind the inner conductor clamping device and extending transversely to the longitudinal axis of the connecting cable, and in lateral guides upward limited to stop perpendicular to the connecting cable longitudinal axis slidably mounted and in the operating position against the outer conductor of the coaxial cable, designated 16 in Fig. 4, screwed. The lateral guides consist of vertical slotted guide rails 17, as can best be seen from FIGS. 2 and 3. A lateral pivot pin 19 of the clamping arm 15 engages in the slots 18 of the guide rails 17. The slots 16 are narrowed at the top to limit the stop, for example by bending a web as shown at 20 in FIG. 3. It can thus be seen that the clamping arm 15 is displaceable in the guide slots 15 perpendicular to the plane of the base support and also via the pivot pin 19 is pivotable.

As can be seen in particular from FIG. 2, the clamping surface of the clamping arm 15 is ribbed transversely to the longitudinal direction of the connecting cable by ribs 21 rounded in its longitudinal direction. The rib sleeves are increasingly formed in the direction of insertion. Furthermore, the ribs moving on the metal outer conductor of the coaxial cable are provided with a larger contact surface than the subsequent ribs, which lie on the insulating jacket of the cable, as can be clearly seen from FIG. 2.

On the metal base support 1, the clamping surface with the ribs 21 of the clamping arm 15 is assigned a clamping support 22, which is also ribbed transversely to the connecting cable longitudinal direction, as shown in FIG. 2 in particular by the ribs 23, which show the increasing rib height and width the bearing surfaces are designed according to the ribs 21 on the clamping arm 15.

On the rear side of the clamping arm 15 in the direction of insertion, a metal tongue 24 is arranged on the base support between the temporal guide rails 17, which cooperates with a projection 25 provided on the clamping arm edge in such a way that the clamping arm can be pivoted in the position pulled up against the guide stop 20 according to FIG. 2 and can be locked automatically in the raised position. Fig. 2 shows this position.

The clamping arm 15 has, in its area surrounding the inner conductor clamping device, downward-facing side walls 26. On the long sides of the clamping arm 15, screen walls 27 are arranged in this area, that is, at least in the area of the side cheeks 26, on the base support 1, which are additionally each covered with contact springs 28, here in the manner of cage springs, which thus act against the side cheeks 26 of the clamping arm 15 in its in Fig. 3 shown operating position firmly and resiliently.

With the help of the captive nut 29 held in the clamping arm 15, the clamping arm can be firmly screwed onto the screw pin 30 in the clamping and operating position.

2 clearly shows the clamping devices for the inner conductor in the operating position, in which case the pressure piece 14 presses the inner conductor 10a onto the wire end 10 and the abutment 9.

Claims

PATENT CLAIMS

1. Antenna socket for high frequency ranges with a metal base support, which carries the coaxial plug-in elements for the plug connection of connecting cables, and with clamping devices arranged on the base support for the inner conductor on the one hand and for the outer conductor on the other hand, each coaxial cable to be inserted into the socket, in which the clamping device for the Outer conductor consists of a metal clamping arm which is arranged in the insertion direction in front of the inner conductor clamping device and which is pivotably mounted on the base support and which lies against the outer conductor with a clamping surface, and a metal clamping support arranged on the base carrier and opposite the clamping surface, the clamping surface and clamping support holding the outer conductor in the Detect and clamp the operating position, characterized in that the clamping arm (15) lies transversely to the one by a position behind the inner conductor clamping device (6, 13) in the insertion direction Final cable longitudinal axis axis (19) can be pivoted and can be moved upwards in side guides (17) with limited stops vertically to the connecting cable longitudinal axis on the base support (1) and screwed against the outer conductor in the operating position.

2. Antenna socket according to claim 1, characterized in that the lateral guides consist of vertical slotted (18) guide rails (17), in the slots (18) lateral pivot pins (19) of the clamping arm (15) engage and the slots narrowed at the top to limit the stop are (20).

3. Antenna socket according to claim 1 or 2, characterized in that the clamping surface (21) of the clamping arm (15) and the clamping support (22, 23) are ribbed transversely to the longitudinal direction of the connecting cable.

4. Antenna socket according to claim 3, characterized in that the rib heights (21, 23) are increasingly formed in the insertion direction.

5. Antenna socket according to one of claims 1 to 4, characterized in that the clamping arm (15) at least in its area surrounding the inner conductor clamping device (6, 13) has downwardly facing side walls (26).

6. Antenna socket according to one of claims 1 to 5, characterized in that on the long sides of the

Clamping arms (15) on the base support (1) are arranged metal screen walls (27).

7. Antenna socket according to claim 6, characterized in that the clamping arm facing surfaces of the screen walls (27) with contact springs (28), in particular basket springs, are occupied.

8. Antenna socket according to one of claims 1 to 7, characterized in that on the rear side in the insertion direction of the clamping arm (15) between the lateral guides (17) located a metal tongue (24) on the base support (1) is arranged with a on the clamping arm edge provided projection (25) cooperates in such a way that the clamping arm (15) can be pivoted in the position raised against the guide stop (20) and can be automatically locked in the pivoted position.

9. Antenna socket according to one of claims 1 to 8 for the simultaneous connection of two parallel coaxial cables, characterized in that a single clamping arm (15) with its pivoting and displacement guide and the side shield walls (27) and a single clamping support (22) for both outer conductors ribs (21, 23) assigned to each outer conductor are provided.

10. Type socket according to one of claims 1 to 9, wherein each clamping device for the inner conductor from an abutment held on the base support made of insulating material with a connection contact leading to the interior of the socket and a pressing element with one in the operating position against the inserted inner conductor and this against the Connection contact pressing piece made of insulating material, characterized in that the connection contact consists of a wire end (10) placed on the abutment (9) and the pressing element consists of a screw (12) in the direction of the abutment (9) which can be tightened and in which Abutment displaceably guided guide piece (13), which carries the pressure piece (14). and the pressure piece (14) is displaceably guided in a recess (8) of a receiving piece (6) made of insulating material which surrounds the abutment (9), which recess (6) is open on one side for inserting the inner conductor and is shaped on the bottom to form an abutment.

11. Antenna socket according to claim 10, characterized in that the wire end forming the connection contact (10) lies transversely to the inner conductor longitudinal axis (10a) on the abutment (9).

12. Antenna socket according to claim 11, characterized in that the surface of the abutment (9) transverse to the wire end (10) profiled inclined and the associated pressing surface of the pressure piece (14) is profiled complementary thereto.

13. Antenna socket according to claim 12, characterized in that the receiving piece (6) of the abutment (9) is shaped blotfk-shaped with lateral guide walls and the pressing element (13) with at least one side cheek slidably abuts a guide wall of the receiving piece (6).

14. Antenna socket according to one of claims 10 to 13, characterized in that the connection end leading into the socket of the wire end forming the connection contact (10) in a slot (11) of a guide wall of the receiving piece (6).

15. Antenna socket according to one of claims 10 to 14, characterized in that the guide piece (13) of the pressing element consists of a material which is firmer than the pressure piece (14), in particular metal, and the pressure piece (9) made of insulating material is fastened to its underside .

16. Antenna socket according to one of claims 10 to 16, characterized in that each receiving piece (6) and abutment (9) on a crossmember (7) made of insulating material in the base support (1) are held.