WO2009003907A1

WO2009003907A1 - Plug-type connector

Info

Publication number: WO2009003907A1
Application number: PCT/EP2008/058166
Authority: WO
Inventors: Salvatore Severitano
Original assignee: Huber+Suhner Ag
Priority date: 2007-07-05
Filing date: 2008-06-26
Publication date: 2009-01-08

Abstract

The invention relates to a plug-type connector (1) with a stamped and bent part (2) with integrally formed contact feet (7, 10) with press-in pins (8) for connecting the plug-type connector (1) to a printed circuit board.

Description

CONNECTOR

TECHNICAL AREA

The present invention is in the field of connectors, particularly in the field of coaxial connectors for connecting cables to a printed circuit board.

STATE OF THE ART

Various coaxial connectors for connecting cables to a printed circuit board are known from the prior art.

EPL 329004 from 3M Innovative Properties Company, published in 2003, shows a connector having a plurality of coaxial contacts with the individual dielectrics interconnected. In this case, an electrical connector is formed in each case from an inner conductor, a dielectric and a separate outer conductor. For contacting on a circuit board, the inner conductor and the outer conductor of each coaxial connector must be soldered separately on a conductor track.

In EP0872913 of Siemens, published 1 998, a multi-coaxial connector for SMD (Surface Mounted Device) assembly is shown. The housing consists of a metallised plastic. The contact feet of the inner conductor and the contact feet of the outer conductor or the outer housing are divided into different metallization areas, so that they are electrically separated.

The applicant himself describes an angle connector of the QMA connector series under the type designation 85 QMA-50-0-3 / 1 1 1 N (see SUHNER, Coaxial Connector General Catalog, Edition 2003/2004, p. 188). The housing of this connector is made of metal and has molded directly onto the housing solder feet for insertion and soldering in holes of a printed circuit board. The connector interface is a QMA type receptacle and is positioned so that the connector axis is at 90 ° to the solder feet, or parallel to a printed circuit board. The connector series QMA is a snap connector with lock.

The applicant also discloses a connector of the QMA series under the type designation 22 QMA-50-0-1 / 1 33 (see SUHNER, Coaxial Connector General Catalog, Edition 2003/2004, p.185), in which the connector can be pressed directly into an opening in a chassis with its outer housing. The outer conductor thus makes contact with the ground of a housing, while the inner conductor protrudes into the housing and is exposed for contacting.

Rosenberger has announced a 59S2AG-400A5-Y connector (see data sheet by Rosenberger, RF_35 / 1 2.04 / 3.0) for the automotive industry according to the FAKRA standard, in which two connectors with their outer conductors are fastened to a tinned steel stamped and bent part with soldering feet , The connector pair can now be fixed by means of the stamped and bent part directly on a printed circuit board or inserted into corresponding holes. The inner conductor and the stamped bent part, which contacts the outer conductor, are soldered.

Known from the prior art coaxial connectors for printed circuit boards are all consuming to install and must be soldered for contacting on the circuit board. Disadvantages arise in the rational production and processing.

It is an object of the invention to provide an improved over the prior art coaxial connector to provide the cost-effective to manufacture and is easier to process. In addition, a multiple connector to be shown, in which With little effort, the number of connections can be adapted to the respective field of application and varied.

This object is achieved by the device defined in the independent claim. Further embodiments emerge from the dependent claims.

An embodiment of a connector according to the invention consists essentially of an electrically conductive mounting body and one or more interface parts.

The mounting body preferably consists of a stamped and bent part with molded contact feet, preferably in the form of press-fit pins. In one embodiment, the interface part has a coaxial construction, which can be connected at its first end to a coaxial Cegenstecker. At its second end, the interface part is crimped into an opening in the mounting body (e.g., press-fitting and / or crimping) so that the outer conductor of the coaxial interface part electrically contacts the mounting body. Depending on the field of application, another type of connection may also be used, for example screwing, soldering or gluing. The advantage of pressing, however, is the comparatively simple manufacture. If necessary, the contact surface may be surface treated to increase the contact ability. Good results can be achieved with galvanic or other coatings.

In a coaxial design, the inner conductor of the interface part protrudes through an opening in the mounting body and also has at its lower end a contact foot which is arranged in the vertical direction substantially at the same level as the contact feet of the mounting body or slightly above it , This ensures that not all contact feet come into active connection at the same time. The contact foot of the inner conductor may also be formed as a press-fit. The contact feet of the mounting body, as well as the one or more inner conductor may be configured so that they can be placed on corresponding pads of the circuit boards or inserted directly into holes in the circuit board and soldered.

In one embodiment, the contact feet as lateral cheeks (flat side walls with or without recesses) are formed with molded Einpressstiften whose integral design is particularly efficient at a mounting body as a stamped and bent part and has a high stability. It is also possible to press in beads that have a positive effect on the mechanical stability even of thin sheets. Particularly in automated processing, increased mechanical stability is advantageous, e.g. when the press-fit pins are pressed into the openings provided for this purpose.

The preferably used Einpressstiften are metal pins with a range for pressing in a non-metallized (non-conductive) or metallized (conductive) bore of a printed circuit board (in the art also called via), which usually without subsequent soldering reliable electrical contact with allow the metallization of the borehole and thus the corresponding trace or serve only for anchoring the connector. Depending on the field of application, comparatively rigid or elastic press-fit pins are preferred. When trained as a rigid pin whose press-in area is massive and usually designed as a square. The forces necessary for the connection result from a deformation of the printed circuit board hole into which the massive press-fit pin is pressed. An elastic pin has a press-in area with an elastic deformation zone and the forces necessary for the connection are applied primarily by the deformation of the elastic press-fit pin. A variant of an elastic press-in pin with deformation zone is centrally crushed in the press-in and / or has an opening and is flared lens-shaped. Some advantages of the press-in technology presented here are listed below: • Elimination of the additional temperature loads of the assemblies by eliminating a soldering process

• Possibility of using less temperature stable materials

• No short circuits due to solder bridges or solder balls

• No cold solder joints

• Fast and cost-effective installation without additional fastening

• Rational production of press-fit pins in stamping and bending technology

In order to further facilitate the pressing in of the mounting body or connector and to ensure a correct press-in depth, the press-fit pin can have a shoulder above the deformation zone or the press-in area which is larger than the drill hole and serves as a stop.

In one embodiment, the contact feet are arranged on both sides of the base area, with the interface parts mounted thereon. The mounting body is substantially U-shaped, so that the interface parts have a distance from a printed circuit board. The contact feet can be designed so that they are designed as cheeks and have recesses. These recesses allow on the one hand a visual inspection of the components, which are arranged in the space below the connector and on the other hand, an air circulation to prevent heat build-up under the connector. They also serve to reduce the required material consumption. Variants are conceivable where the axial direction of the interface parts are parallel or at right angles to the printed circuit board. For special applications other angles are possible. By means of a suitable arrangement of the contact feet, for example a staggered arrangement of the front and rear feet, optimum material utilization in the production of the mounting body, for example as a stamped and bent part, can be achieved by reducing the material loss during punching.

The design of the mounting body as a stamped and bent part ensures great flexibility in the design of the connector. It is also possible with a comparatively simple tool to punch the mounting body of several coherent segments step by step. As a result, a simple adaptation to the desired number of connections is possible and the punching tool can be configured independently of the number of interface parts. So also individual connectors can be produced.

In one embodiment, the mounting body is designed so that at least three mutually staggered contact feet are present per segment or interface part, for example, two contact feet are arranged on the side in the vicinity of which the opening for the interface part is provided. The interface part with its inner conductor contact foot can also be arranged approximately centrally between the three contact feet of the mounting body. The arrangement close to the two front contact feet has the advantage that forces are transmitted from the interface part on the contact feet ideally on the circuit board. Another advantage is that this still room on the base for additional elements, such as a fastener in the form of a threaded hole, which can be manufactured in the same operation, is present. The design with three contact feet of the mounting body also offers the advantage of a stable state of a single segment or a single connector. A band-shaped, endless starting material enables optimized material utilization, since less material is lost as a rule. Between the individual connector units perforations or predetermined breaking points can be provided, which allows a subsequent splitting of a multiple connector. To increase the stability can additionally serve a bead over any number of segments. By a design in stamping bending technology also allows easy adjustment for different orientations of the base or the Interfaceachse. As a material, for example, a sheet of bronze, brass, nickel silver or steel can be used in a thickness of 0.2 to 2.0 mm.

The execution of the assembly body in a sequential punch bending technique with bends in only one direction has in particular the following advantages:

• Simple punch bending tool

• High packing density of the connector interfaces

• Simple design for a high number of connector interfaces

• Easy, simultaneous installation of a large number of connector interfaces on the

circuit board

• Reduced cost per connector interface

• No time-consuming gilding of the mounting body necessary by eliminating the solder joints • Optimization of the contact ability by using comparatively favorably tinned sheet metal strip

In one embodiment, the connector has a sheet-metal stamped bent part with integrally formed contact feet with press-in pins for pressing into openings of a printed circuit board and one or more interface parts, which are each arranged in an opening of the stamped and bent part and operatively connected thereto. The interface part may be crimped with an edge of the opening. The stamped and bent part has a substantially U-shaped cross-section. The injection pins are flared lenticular and may have an opening and / or a web. Alternatively, the press-fit pins are rigid. The interface part can be configured coaxially with an inner conductor and a dielectric. In a further embodiment, the stamped and bent part has a predetermined breaking point between two interface parts. The interface part has a connector interface of the type QMA, other types are conceivable.

BRIEF DESCRIPTION OF THE FIGURES

On the basis of figures, which represent only embodiments, the invention will be explained in more detail below. Show it

Fig. 1 shows a connector in a perspective view from the front and top;

FIG. 2 shows the connector according to FIG. 1 in a perspective view obliquely from below; FIG.

3 shows the connector according to Figure 1 from the front.

4 shows the connector according to Figure 1 from the side. 5 shows the connector according to Figure 1 from above.

Fig. 6 detail A of Figure 3.

DETAILED DESCRIPTION OF AN EMBODIMENT

Figure 1 shows a possible embodiment of an inventive multiple coaxial connector 1 in a perspective view obliquely from above and in Figure 2 obliquely from below. Figures 3, 4 and 5 show the connector 1 in a front view (y-direction), from the side (x-direction) and from above (z-direction). The reference numerals corresponding parts and areas are identical in all figures.

The connector 1 has a structure carrying, made of sheet metal mounting body 2 with six, coaxial interface parts 3 here. The number of interface parts 3 can of course vary. The six interface parts 3 each have a socket of the type QMA, which are suitable for connection to corresponding plugs (not shown). Other sockets or plugs are of course possible.

The mounting body 2 is made of sheet metal as a stamped and bent part and, despite its low weight, has a comparatively high strength, which proves to be advantageous during assembly. In addition, there is an advantage in that the stamped and bent part can be produced sequentially, ie, in sections, on account of its design. The outer conductor 4 of the interface parts 3 are arranged in openings 5 in a base 6 of the mounting body 2 and electrically connected to this by pressing electrically connected. The openings 5 are surrounded by a beaded edge 1 2, which serves to support the interface parts 3. The mounting body 2 has per Interfaceteil 3 two mutually spaced contact feet 7, which each have at its lower end one or more here lenticular, elongated and elastically deformable formed Einpressstifte 8. As you can see, they are Contact feet 7 formed wider above the press-fit pins 8, so that they serve as a stop in the vertical direction (z-direction) when pressing the Einpressstifte 8 in an opening of a board (both not shown). If necessary, the press-fit pins 8 can be designed such that they can be bent over after pressing on the rear side of the board to increase the holding action.

In the embodiment shown, the contact feet 7 and the press-fit pins 8 are arranged at a right angle to the base 6 and thus parallel to the interface parts 3. In addition, the arrangement of the contact feet 7 and the press-fit pins 8 is selected so that the plug-in connector 1 can be subdivided into individual segments 9 (cf., FIG. 1, segmented line). This is achieved in that each interface part 3 has its associated contact feet 7, which are arranged so that a subdivision into segments 9 is even possible. Depending on the embodiment and field of application is another distribution, resp. Number possible. If necessary, predetermined breaking points 20 are present, which allow a simple subdivision.

In the embodiment shown, the closer to the interface parts 3 arranged Kontaktfüsse 7 as a frame-shaped cheek 10 with lateral openings (recesses) 1 1 are formed. The recess 1 1 allow a visual inspection and improve air circulation in the area below the connector. 1 The base 6 also has one or more threaded openings 13 which are used to secure the connector 1 e.g. on a Cehäuse- front (not shown) serve.

The arranged on the cheeks 1 0 front Einpressstifte 8 are laterally offset from the arranged at the contact feet 7 rear press-in pins 8, so that when a juxtaposition of the dies forms little material loss. The interface parts 3 are arranged closer to the cheeks 1 0 and between the front Einpressstiften. 8 attached, so that optimum stability and power transmission and a simple operative connection with a printed circuit board results.

The press-fit pins 8 configured here in a flexible manner are formed with a deformation zone 14 in the press-in region (compare detail A, FIG. The deformation zone 14 is formed by controlled central crimping and resulting lenticular widening of the press-in pin 8. The resulting outer dimension d of the press-fit pin 8 is selected larger than the diameter of the press-in opening in the printed circuit board. When inserting the press-fit pin 8 into a press-fit opening of a printed circuit board provided therefor, the deformation zone 14 is compressed laterally and deformed in such a way that the press-fit pin 8 presses against an outer wall of the opening. If necessary, the press-fit pins 8 can have an opening (recess) 17 and a central web 18, which serves to increase the longitudinal stability in order to set the required deformation force. A shoulder 1 5 above the press-in pin 8 is used during assembly as a stop and limits the pressing on the correct Einpresstiefe. Another embodiment of the flexible press-fit pin 8 is conceivable, as well as a design as a rigid, solid press-fit is possible.

As can be seen in Figure 4, which are arranged in the interior of a dielectric 1 9 inner conductor 1 6 of the interface parts 3 at its lower end also Einpressstifte 8 and are shorter in the embodiment shown as the contact feet 7 of the base 6 and 90 ° arranged twisted to these. By this arrangement, the assembly is facilitated because not all press-fit pins 8 must be pressed simultaneously.

X _C)

LIST OF SIGNATURE SIGNS

1 connector

2 mounting body / stamped bent part

3 interface part 4 outer conductor

5 opening in base

Base

7 contact feet

8 press-fit pin 9 segment

10 cheek

1 1 recess

12 edge

13 threaded opening 14 deformation zone

1 5 shoulder

16 inner conductors

17 opening in the press-fit pin

18 bar 1 9 dielectric

20 predetermined breaking point

Claims

1 . Plug-in connector (1) having a sheet-metal stamped bent part (2) with molded contact feet (7, 10) with press-fit pins (8) for pressing into openings of a printed circuit board and one or more interface parts (3), each in an opening (5) the stamped and bent part (2) are arranged and operatively connected to this.

2. Connector (1) according to claim 1, characterized in that the interface part (3) is pressed with an edge (1 2) of the opening (5).

3. Connector (1) according to one of the preceding claims, characterized in that stamped and bent part (2) has a substantially U-shaped cross-section.

4. Connector (1) according to one of the preceding claims, characterized in that the press-fit pins (8) are flared lens-shaped.

5. Connector (1) according to claim 4, characterized in that the press-fit pins (8) have an opening (1 7).

6. Connector (1) according to one of the claims 4 or 5, characterized in that the press-fit pins (8) have a web (1 8).

7. Connector (1) according to one of the preceding claims 1 to 3, characterized in that the press-fit pins (8) are rigid.

8. Connector (1) according to one of the preceding claims, characterized in that the interface part (3) coaxial with an inner conductor (1 6) and a dielectric (1 9) is configured.

9. Connector (1) according to one of the preceding claims, characterized in that the stamped and bent part (2) between two interface parts (3) a

Has predetermined breaking point (20).

10. Connector (1) according to one of the preceding claims, characterized in that the interface part (3) has a connector interface of the type QMA.