WO2007085098A1

WO2007085098A1 - Plug-type connector

Info

Publication number: WO2007085098A1
Application number: PCT/CH2006/000663
Authority: WO
Inventors: Peter Studerus
Original assignee: Huber + Suhner Ag
Priority date: 2006-01-26
Filing date: 2006-11-27
Publication date: 2007-08-02
Also published as: DK200801028A; AU2006337044A1; CH698271B1

Abstract

The invention relates to a plug-type connector (10) having a connector inner conductor (13), which comprises a socket (14, 18) for the pluggable connection to a mating piece, a plurality of slits (15, 19) running in the longitudinal direction being arranged distributed over the circumference in the wall (14', 18') of said socket. In the case of such a plug-type connector, constantly high contact forces and improved high-frequency properties are achieved by virtue of the fact that the slits (15, 19) are delimited towards the open end of the socket (14, 18) in terms of length by a closed ring section (17, 21) of the wall (14', 18').

Description

DESCRIPTION

CONNECTOR

TECHNICAL AREA

The present invention relates to the field of electrical

Connector. It relates to a connector according to the preamble of claim 1.

STATE OF THE ART

From the prior art, a plurality of coaxial connectors are known, which are used for releasably connecting coaxial cables. An example of such connectors is described in EP-A2-0 194 968. The connector inner conductor such connectors have at the cable end hollow cylindrical sections in the form of slotted sockets, in which the inner conductor of the coaxial cables are inserted in contact. Due to the continuous through to the socket input slot the socket can be permanently widened during insertion of the cable inner conductor, which on the one hand leads to a reduced and decreasing contact force and on the other hand leads to undefined contact ratios and associated increases in intermodulation.

PRESENTATION OF THE INVENTION

It is an object of the invention to provide a connector which avoids the disadvantages of known connectors, in particular coaxial type, and is characterized by consistently high contact forces and improved high-frequency characteristics.

The object is solved by the entirety of the features of claim 1. The essence of the invention is to be seen in the fact that provided for the plug contact hollow cylindrical portion extending in the direction of insertion

Slits is provided, which do not pass through to the open end of the hollow cylindrical portion, but are limited to the open end of the hollow cylindrical portion in the length by a closed annular portion of the wall, ie end in the wall. Thus, an input-side spreading of the wall is prevented. In the region of the slots, a concentrically encircling rib is preferably formed in the wall, which produces a defined contact with the counterpart. Due to the slots, the wall can yield elastically in the area of the rib and support the contact. However, in the case of inner conductors with profiled twist to be inserted, such a rib is not required since the contact point is provided on the inner conductor twist. The

Slots must have at least the length of a slope of the twist. According to one embodiment, which is provided for inserting a counterpart into the hollow cylindrical section, the rib is arranged on the inside of the wall.

If a tube-like counterpart is to be pushed outside over the hollow cylindrical section, the rib is arranged on the outside of the wall.

The number and arrangement of the slots in the hollow cylindrical section can be varied within wide limits depending on the circumstances and requirements. It has proven useful to provide four slots in the hollow-cylindrical section, each of which has a 90 ° wedge spacing about the bushing axis. But it is also conceivable to provide more than four slots, which are arranged distributed uniformly around the cylinder axis. The slots can run both axially parallel and spirally around the axis.

Another embodiment of the invention is characterized in that the connector inner conductor is in one piece and has a cylindrical solid body, and that the hollow cylindrical portion is formed as a coaxial blind bore at the end of the connector inner conductor. As a result, production and assembly of the connector inner conductor are greatly simplified. However, the connector inner conductor can also be multi-part and / or a cylindrical hollow body, e.g. a pipe. The hollow cylindrical section is then a section at the end of the connector inner conductor.

A particularly preferred embodiment of the inventive

Connector is characterized in that the connector inner conductor is part of a coaxial connector, and that the connector inner conductor is isolated and concentrically held in a hollow cylindrical housing serving as an outer conductor.

In particular, the coaxial connector is provided as an end connector for a coaxial cable, which in coaxial arrangement an inner conductor and an outer conductor, wherein the female connector has at one end a first hollow cylindrical portion or a plug pin for pluggable connection with a counterpart of another connector and at the other end a second hollow cylindrical portion for plug-in connection with the inner conductor of the coaxial cable.

In this case, when the second hollow cylindrical portion for inserting the inner conductor of the coaxial cable is formed, the rib of the second hollow cylindrical portion is disposed on the inside of the wall or on the outside of the inner conductor of the coaxial cable.

In contrast, when the second hollow cylindrical portion is formed for insertion into the tubular inner conductor of the coaxial cable, the rib of the second hollow cylindrical portion is disposed on the outside of the wall or on the inside of the inner conductor of the coaxial cable.

The connector inner conductor can also be provided without a rib if the inner conductor of the coaxial cable has a rib or a helix. If the inner conductor of the coaxial cable is equipped with a helix, a section of the helix is used as the rib. The axial length of the slots preferably corresponds to at least one pitch of the helix.

BRIEF EXPLANATION OF THE FIGURES

The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it

Figure 1 is a longitudinal section of a first embodiment of a coaxial connector according to the invention, the connector inner conductor is designed cable side for receiving the inner conductor of a coaxial cable. Figure 2 shows the connector of Figure 1 in the assembled state at the end of a corresponding coaxial cable ..;

Fig. 3 in longitudinal section a second embodiment of a coaxial

Connector according to the invention, the connector inner conductor is designed on the cable side for receiving in the tubular inner conductor of a coaxial cable; and

Fig. 4 shows the connector of Fig. 3 in the assembled state at the end of a corresponding coaxial cable.

WAYS FOR CARRYING OUT THE INVENTION

In Fig. 1, a first embodiment of a coaxial connector according to the invention is shown in longitudinal section, the connector inner conductor is designed cable side for receiving the inner conductor of a coaxial cable. Fig. 2 shows this connector at the end of a coaxial cable. The connector 10 of Figs. 1 and 2 is designed as a coaxial connector for a coaxial cable 30. It comprises a metallic, hollow-cylindrical housing 11, which is aligned concentrically with the plug axis 29 and at the same time serves as an outer conductor of the coaxial arrangement. The housing 11 encloses an inner space 28 which serves to receive the cable end. In the forwardly tapered part of the housing 11 is by means of a cylindrical

Insulating piece 12 a housing 11 coaxial connector inner conductor 13 is held. The connector inner conductor 13 is formed as a solid metal cylinder and has at the two ends in each case a hollow cylindrical portion 14 and 18 which is formed as a blind bore in the solid cylinder.

The at the front (in Fig. 1, 2 left) end of the connector inner conductor 13 located first hollow cylindrical portion 14 forms a socket and takes the Plug pin of a corresponding counterpart, as shown analogously in Fig. 2 of the aforementioned document EP-A2-0 194 968. Core of the present invention is the special design of this first hollow cylindrical portion 14: In the relatively thin wall 14 'of the hollow cylindrical portion 14, offset by 90 °, four axial slots 15 housed - unlike in the prior art - not up to pass to the front (left) end of the sleeve 14, but in the wall 14 'ends, so that at the front end of the wall 14' remains a closed ring portion 17 remains. Due to the closed ring portion 17, the hollow cylindrical portion 14 can not be funnel-shaped at the entrance when plugging in a plug pin, but bulge in a barrel shape only in the middle of the section.

Viewed in the axial direction in the region of the slots 15, a circumferential rib 16 is formed on the inside of the wall 14 ', which projects radially inwards and produces a defined annular contact with the inserted plug pin. The inwardly projecting rib 16 at the same time ensures that the wall 14 'is bulged elastically outwards in its area by the inserted plug pin and thus ensures a corresponding contact pressure for the electrical contact between the rib 16 and the plug pin. The one by the

Rib 16 well-defined and contact pressure safe contact between the inner conductor parts has considerable advantages in terms of RF transmission because of intermodulation caused by irregularities such as e.g. distributed multiple contacts in the inner conductor area, can be significantly reduced.

The same contact principle (limited slots and contact rib) can be used with advantage also at the cable end of the connector inner conductor 13. Here, according to the embodiment of Figs. 1 and 2, a second hollow cylindrical portion 18 is provided which is also formed as a blind bore in the solid cylinder of the connector inner conductor 13. In the wall 18 'of the second hollow cylindrical portion 18 four corresponding slots 19 are housed, which at the open end of the portion 18 by a closed Ring portion 21 of the wall 18 'are limited. Analogous to the first hollow cylindrical section 14, a circumferential rib 20 is also provided here on the inside of the wall 18 'in the region of the slots 19, resulting in a defined ring contact. In the second hollow cylindrical portion 18, the end of the inner conductor 31 of a coaxial cable 30 is inserted, as shown in Fig. 2 - but without showing the associated bulge of the wall 18 '- is shown.

The (corrugated) outer conductor 32 of the coaxial cable 30 is inserted for attachment and contacting in the connector 10 with a flared edge in a designated annular clamping groove 23 in the housing 11 and pressed by a conically tapered clamping ring 24 against the front side wall of the clamping groove 23. The necessary clamping pressure for the clamping ring 24 is generated by a screwed into the housing 11 clamping screw 25 which presses axially on the clamping ring 24. In the clamping screw 25, a circumferential groove 26 is provided which serves to receive an acting against the outer jacket of the cable as a seal O-ring 27. At the front end of the connector 10 a Verschraubungsteil 22 is arranged, with the aid of which the two connectors of a plug connection can be screwed.

In the context of the invention, however, another embodiment of the cable-side hollow cylindrical portion of a coaxial connector is possible. In the embodiment of FIGS. 3 and 4, the local connector 40 with respect to the housing 11, the insulating piece 12, the Verschraubungsteils 22 and the clamping device 23, .., 27 constructed the same as the embodiment of Fig. 1, 2. The front hollow cylindrical portion 14, .., 17 of the connector inner conductor 13 'is similar. In contrast, the second, cable-side hollow-cylindrical section 33 is configured differently. Although it also has a thin wall 33 'provided with axial slots 34 delimited by a closed annular section 36. However, in this case, the circumferential rib 35 is externally formed on the wall 33 '. The thus configured hollow cylindrical portion 33 is not used to receive the inner conductor of a coaxial cable, but will_sseits - as can be seen clearly in Fig. 4 - taken from the tubular inner conductor 38 of a coaxial cable 37. By the rib 35, a geometrically well-defined electrical contact between connector inner conductor 13 'and the inner conductor 38 of the coaxial cable 37 is made in this case. The associated contact pressure results from the (not shown in FIG. 4) constricting deformation of the wall 33 'in the manner of a hyperboloid of revolution in the region of the rib 35. The clamping of the outer conductor 39 of the coaxial cable 37 is analogous to the embodiment of FIGS. 1, 2 ,

In both embodiments, are provided at both ends of the connector inner conductor 13 and 13 'hollow cylindrical sections with the limited slots and molded ribs. Of course, the connector inner conductor can also be equipped at only one end with such a hollow cylindrical portion. In particular, it is conceivable that a hollow cylindrical section is provided at the rear end of the connector inner conductor only for connection to the inner conductor of the coaxial cable 30 or 37, while the front end of the inner connector conductor is designed as a plug pin (analogous to FIG. 2 of the EP-A2- 0 194 968).

In a further embodiment of the invention is dispensed with the rib on the connector inner conductor when a rib or a helix (twist) is already present on the cable inner conductor. It should be noted here that the length of the slots corresponds to at least one pitch of the helix.

On the whole, the embodiment of the invention explained here is an inner connector conductor in which the slots for contacting are not pulled through to the end. The slots are explicitly bounded by a "closed ring." For effective contact can ever after contacting (inside or outside) a rib are formed, which then also defines the contact location.

The main advantage of this solution is that a solid (up to 20 times) increased contact pressure and thus a more reliable contact between the connector inner conductor and plugged pin or cable inner conductor can be achieved by the forward closed slot. This is then shown explicitly in improved intermodulation values.

This increased contact pressure can also be a cheaper material (instead of bronze brass, or instead of CuBe bronze) with less spring force used.

Due to the closed design at the end of the inner conductor (closed ring section), the attachment (in the insulating piece) can also be done in the region of the hollow cylindrical sections of the inner conductor, since no more radial movement must be allowed. The result is a shorter design of the connector, which leads to a significant cost savings.

The described embodiment of the hollow cylindrical sections for a

Plug contact is not limited to the connector inner conductor of coaxial connectors, but can be used with advantage in other applications.

LIST OF REFERENCE NUMBERS

10.40 connector (coaxial)

11 housing (outer conductor)

12 insulating piece 13,13 'female connector

14,18,33 hollow cylindrical section (e.g.

14 \ 18 \ 33 'wall (hollow cylindrical section or bushing) 5,19,34 slot, 20,35 rib (encircling), 21, 36 ring section (closed)

screwing

clamping groove

clamping ring

clamping screw

groove

O-ring

inner space

Connector axis, 37 coaxial cables, 38 inner conductors, 39 outer conductors (corrugated)

Claims

1. Connector (10, 40) with a connector inner conductor (13, 13 '), which for the pluggable connection with a counterpart a hollow cylindrical

Section (14, 18, 33), in whose wall (14 ', 18', 33 ') a plurality of longitudinally extending slots (15, 19, 34) are arranged distributed over the circumference, characterized in that the slots (15, 19, 34) are limited in length to the open end of the hollow cylindrical portion (14, 18, 33) by a closed annular portion (17, 21, 36) of the wall (14 ', 18', 33 ').

2. Connector according to claim 1, characterized in that in the region of the slots (15, 19, 34) for the defined contact a concentrically encircling rib (16, 20, 35) is formed.

3. Connector according to claim 2, characterized in that the rib (16, 20) on the inside of the wall (14 ', 18') is arranged.

4. Connector according to claim 2, characterized in that the

Rib (35) on the outside of the wall (33 ') is arranged.

5. Connector according to one of claims 1 to 4, characterized in that in the hollow cylindrical portion (14, 18, 33) four slots (15, 19, 34) are provided, each having an angular distance of 90 ° about the cylinder axis.

6. Connector according to one of claims 1 to 5, characterized in that the connector inner conductor (13, 13 ') is in one piece and has a cylindrical solid body, and that the hollow cylindrical portion (14, 18, 33) as a coaxial blind bore at the end of the connector inner conductor (13, 13 ') is formed.

7. Connector according to one of claims 1 to 5, characterized in that the connector inner conductor (13, 13 ') is in one piece and has a cylindrical hollow body, and that the hollow cylindrical portion a. Section at the end of the connector inner conductor (13, 13 ') is.

8. Connector according to one of claims 1 to 7, characterized in that the connector inner conductor (13, 13 ') is part of a coaxial connector (10, 40), and that the inner connector conductor (13, 13') isolated and concentric in a hollow cylindrical , Serving as an outer conductor housing (11) is held.

9. Connector according to claim 8, characterized in that the coaxial connector (10, 40) as Endverbindungsstück for a coaxial cable (30, 37) is provided, which in coaxial arrangement an inner conductor (31, 38) and an outer conductor (32, 39 ), and that the connector inner conductor (13, 13 ') at one end a first hollow cylindrical portion (14) or a plug pin for pluggable connection with a counterpart of another connector and at the other end a second hollow cylindrical portion (18, 33) for pluggable Connection with the inner conductor (31, 38) of the coaxial cable (30, 37).

10. Connector according to claim 9, characterized in that the second hollow cylindrical portion (18) for inserting the inner conductor (31) of the coaxial cable (30) is formed, and that the rib (20) of the second hollow cylindrical portion (18) on the inside the wall (18 ') or on the outside of the inner conductor (31) of the coaxial cable (30) is arranged.

11. Connector according to claim 9, characterized in that the second hollow cylindrical portion (33) for insertion into the tubular

Inner conductor (38) of the coaxial cable (37) is formed, and that the rib (35) of the second hollow cylindrical portion (33) on the outside of the wall (33 ') or on the inside of the inner conductor (38) of the coaxial cable (37) is arranged.

12. Connector according to claim 10 or 11, characterized in that the inner conductor (31, 38) of the coaxial cable (30, 37) is provided with a helix, and that as a rib, a portion of the helix is used.

13. Connector according to claim 12, characterized in that the axial length of the slots (19, 34) corresponds to at least one pitch of the helix.