JPH02304882A - Module connector system hauing high contact element density surface mounting connector - Google Patents

Abstract

PURPOSE: To provide a connector module having a high contact element density by mutually displacing connection ends of contact elements adjacent to each other in the same row in the longitudinal direction of a connector housing. CONSTITUTION: A connection edge 5 located in each face of printed circuit boards 1 and 2 is connected to connection faces 10 and 11 across the circuit boards 1 and 2. In this case, the connection faces 10 and 11 are displaced in a plug-on direction of a connector. A central element in an inside row is positioned above the connection face 10. A contact element in an outside row is provided with a more inclined connection line 5 relative to base sections 3 and 6, the circuit boards 1 and 2, and a contact face 11 on the both surfaces of the circuit boards 1 and 2. Thus, as the pitch distance between the contact elements decreases, the effect of displaced arrangement of the connection faces 10 and 11 increases.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to module connector systems, particularly surface mounted systems in which connector modules with high contact element density are provided on printed circuit boards.

BACKGROUND OF THE INVENTION Connector modules generally include a housing of insulating material containing an inverse number of contact elements or terminals arranged in rows and columns. A contact element nails the base section and a contact end and a connecting end extending from an opposite end of the base section.

The connecting end protrudes outward from one side of the housing and is connected to the mark-1 circuit board.

Attempts have long been made to accommodate electronic circuits on standard-sized printed circuit boards in as modular a structure as possible. Connections between the individual modules and elements such as recorders, playback devices, etc. are preferably made via electronic connectors. As a result of miniaturization and the high density of current integrated circuits, a very large number of electronic components can be provided on a printed circuit board, so that a very large number of functions can be performed by this type of module. can. The number of terminals required for connection to another module has increased as well.

As a result, there is a growing need for connectors with high contact element density, i.e., having a large number of electrical contacts or terminals per unit volume. Electronic elements are surface mounted on printed circuit boards. As a result of the advent of surface mount technology, the need for connectors with high contact element densities has become even greater.

Surface-mounted devices (SMDs) cannot be installed on printed circuit boards via conventional pinhole connectors, but are connected directly to the surface of the printed circuit board itself. Surface mount techniques allow electronic components to be easily mounted on either side of a circuit board without interference from connection pins protruding through the board. Consequently, this provides a significantly higher component density than that achieved with conventional pinhole connectors, further increasing the number of terminals.

In many cases, connector or contact element density cannot be increased simply by positioning the contact elements closer together or by forming multiple rows of contact elements positioned above each other. Generally, this results in undesirable mutual electrical interference between the contact elements, essentially as a result of capacitive coupling between them. Furthermore, contact elements with very long connection ends to the printed circuit board increase the problem due to the occurrence of undesirable inductive coupling, and the circuit becomes more sensitive to electromagnetic noise signals, so - An infinite number of rows located in the L direction cannot be used.

Furthermore, the wall thickness of the housing in which the contact elements are housed must not be too thin to meet the defined strength requirements, thus maintaining the defined minimum distances between the individual contact elements. is necessary. Furthermore, from the point of view of the mechanical strength of the printed circuit board, it is not desirable to connect multiple rows of contact elements only on its negative side. This is because with such asymmetric devices the circuit board tends to bulge out at the centerline of the connector. This is given to the circuit board9
! It generates unwanted forces and can cause damage to the thin printed circuit strips on the circuit board.

One attempt to solve some of these problems is the 1986
No. 4,807,907, issued Aug. 213, J.

[Problem to be Solved by the Invention] Figure 1 of this patent specification shows that the edge-shaped soldering has a U-shaped end.
5 shows contact elements extending from the base section of the shape and projecting to the outside of the connector for connection to a printed circuit board after installation of the contact elements. In the case of a connector having several rows of contact elements arranged above each other, as shown in FIG. 8 of this patent specification, the connecting ends of the contact elements arranged above each row are They are connected to the printed circuit board by soldering one after the other back and away from the housing. As a result, the topmost connection end when viewed from the printed circuit board is relatively long and therefore has a large leakage inductance. In order to make enough room for the circuit tracks available on the printed circuit board for soldering these connection ends, an increasing number of contact elements are provided in rows one after the other. From a practical point of view and to achieve a reliable connection, the width of the circuit track for these connection ends must not be too small, so
The distance between them must be greater.

One of the objects of the present invention is therefore to provide a connector module with high contact element density, in which the disadvantages of the prior art mentioned above are generally overcome.

This is achieved by mutually displacing the connecting ends of adjacent contact elements in the same column in the row direction, ie in the longitudinal direction of the connector housing.

This displacement may be accomplished by offsetting the connecting end so that it extends into the side edge of the base section.

As a result of the mutual displacement, the connecting ends of the contact elements can be connected to the printed circuit board adjacent to each other in rows or columns as seen from the housing. This reduces the length of the connecting end of the contact element which is far away from the circuit board and the sensitivity to electromagnetic interference is therefore correspondingly reduced.

As a result of the mutually displaced arrangement of the connecting ends of the contact elements in the row, the connector module of the invention is particularly suitable as an edge connector for connection to a printed circuit board. In this regard, the inventive connector in one embodiment extends in the direction of this plane laterally and longitudinally of the side of the housing for connecting printed circuit boards provided in a virtual plane on one or both sides. It has a beveled connection end.

According to another embodiment, the connecting ends have a flattened portion near their free end for surface mounting to a printed circuit board in accordance with the above. In yet another embodiment of the connector, the free end of the connector end is bent back with respect to an imaginary plane to form a funnel that can easily receive a printed circuit board. A further embodiment of the connector according to the invention has two rows of contact elements provided on either side of the imaginary plane.

In order to keep the capacitive interference between adjacent contact elements as small as possible, the base sections of the contact elements must be configured to be flat as shown in FIG. 3 of the above-mentioned US Pat. No. 4,807,907. No. Another embodiment of the connector according to the invention has contact elements arranged in four rows and the connecting ends are configured as flat connecting edges forming an integral part of the base section. Each connecting edge is provided near the edge of the base sexidine. In a further embodiment of the connector, the free ends of the connecting edges of adjacent contact elements in the row extend on one side of the imaginary plane over various distances from the housing in the plug-on direction of the connector.

As a result of the above-mentioned displaced arrangement of the connectors of the connecting ends in the plug-on direction, the respective connecting surfaces of the printed circuit board are also arranged displaced with respect to one another with respect to the edges of the circuit board on the plug-on side. This differs from the connecting surfaces, which must be arranged next to each other, as in the case of connectors with terminals with connecting ends terminating at the same distance. Compared to connecting surfaces arranged adjacent to each other, the displacement arrangement of the connecting surfaces described above for a given pitch distance is wider for the connection resulting in an associated greater mechanical strength. Not only does it make it possible to use a connecting surface, a wider connecting end and/or a wider flat section of the contact element, but also the soldering of the connecting end increases reliability during operation. Since the connecting surfaces are separated from each other by a relatively large distance, the risk of an undesired connection is smaller than with surfaces arranged next to each other.

If the pitch distance becomes smaller and/or the total contact element density of the connector becomes higher with <(lji number of rows), the a-dynamics of the moving arrangement in the plug-on direction of the connecting ends of the contact elements becomes even greater. Become.

The contact element of the invention is also very easily constructed. The contact element has two separate connecting edges (tongues), one of which is removed in the final construction stage in order to effect a mutual displacement of the connecting ends of adjacent contact elements.

If surface installation is used, the displacement arrangement of the connection ends in the longitudinal direction of the connector housing ensures that the flat part of each connection end does not slide during installation relative to their respective connection surface on the printed circuit board. It has another advantage. This prevents any soldering paste or conductive adhesive that may be present on these connection surfaces from being removed while fitting the connector to the printed circuit board.

As a result of the flat structure of the base section, a further embodiment of the connector module according to the invention provides that the housing wall at the end surface is less than half the pitch distance between the contact elements arranged adjacent to each other in rows. It may have a thickness. A connector constructed in this way can be provided with end edges above each other without compromising space for the rows of contact elements. This is particularly useful in the case of printed circuit boards requiring connectors with high contact element density.

Eliminate as much as possible any compressive, bending or tensile stresses at the connection between the connector and the circuit board to achieve good mechanical and/or electrical screening of the electronic elements provided on the printed circuit board and the connector itself. A further embodiment of the connector module according to the invention provides a housing such that the connecting ends of the contact elements project outwardly from one or more rows of openings extending longitudinally of the housing and adjacent to its side walls. An opening is formed therein.

These apertures are provided with teeth for insertion into one or more rows of apertures in the housing of the connector near one or more edges thereof such that during construction the protective plate extends parallel to the above-mentioned imaginary plane. interacts with the attached protective plate.

A preferred embodiment of the guard plate nails teeth formed on an elongated rail of insulating material. The rail is provided near the edge of the guard plate, and the teeth are arranged at a distance from the surface of the guard plate. As a result, the apertures formed in the protective plate surface enable the plate to be secured to the printed circuit board in a manner that provides a strong mechanical connection between the connector and the printed circuit board.

As discussed above, high contact density is achieved with a connector module according to the invention, particularly a connector with four rows. In fact, only some of the contact elements of one connector can be connected with some of the contact elements of another connector or with a printed circuit board. The conductor (i.e. core) of the ribbon cable includes a housing of insulating material with a plurality of contact elements further arranged in rows and columns for connecting between the connector modules.
A cable connector module for a ribbon cable according to the invention is provided having a contact end and a connecting end configured as plug-on contacts of electrically conductive material for connecting. The cable connector has a continuous number of open channels extending in the row direction of the contact elements from one side of the housing to the other for receiving the conductors of the ribbon cable from one side, with only one plug-on contact in each channel. 4, and the contact elements provided adjacent to the other side of the housing are provided with valley contacts in the same row when two cable connectors are installed with the other side located opposite each other. The elements are arranged such that they are separated from each other by one or more positional distances.

The ribbon cable can be formed into the container by channels. In the case of two cable connectors arranged opposite to each other and connected, for example, to a four-row connector according to the invention, the mounting of the contact elements is such that the displacement of the points on the individual cores of the ribbon cable connected to each cable connector The result is that the mutually opposite ends of always have a mutual distance equal to the width of one line. There is therefore no risk that the conductors arranged opposite each other will come into electrical contact with each other, considering that the connected ends of each ribbon cable are terminated according to the position of the contact element.

A preferred embodiment of the cable connector according to the invention comprises two
Contains one row and an even number of columns. Plug-on contacts provided in adjacent channels are arranged in separate rows.

By using contact elements with flat base sections, the external dimensions of the cable connector remain free of space for one or more contact elements.

As a result, two or more cable connectors may directly connect adjacent eg four-row connectors according to the invention.

Furthermore, the invention relates to a contact element of electrically conductive material, in particular for use in a connector or cable connector module as mentioned above. The contact element has a flat base section and a contact end carrying two resilient contact fingers projecting from the flat base section with a contact surface located at the free end. The contact fingers extend symmetrically with respect to the longitudinal centerline of the contact element and are bent away from the plane of the base section over a portion of their length at the end connected to the flat base section. The two contact fingers are bent towards each other again at the end of this part so that the contact surfaces are located opposite each other. With such contact elements, equal and relatively small mutual spacings can be created between adjacent contact elements of the connector.

The present invention also relates to a power connector module that includes one or more contact sockets or contact pins surrounded by a housing and having elongated connection ends of conductive material for connecting the power connector to a printed circuit board. The connection end is provided with a slotted opening in which a printed circuit board can be received for connecting a 7U connector to one or both sides of the circuit board by surface mounting. This type of power connector is especially used for connecting power supply lines.

The invention further includes one or more outermost or innermost contact sockets or contact pins insulated from each other and surrounded by a housing, the connecting ends of conductive material for connecting the coaxial connector to a printed circuit board. Regarding coaxial connector module.

The outermost contact socket has a connecting end for connecting it to one side of the printed circuit board, and the innermost contact socket or innermost contact pin has a connecting end to the other side of the printed circuit board by surface mounting. It has a connecting end to connect it.

In this application, the term "printed circuit board", also commonly referred to as "printed wiring board", is generally understood to mean substrates with conductive tracks, thus also for example substrates of liquid crystal displays.

The invention also relates to a contact element with a flat base section for use in a connector or cable connector module according to the invention.

The connecting end of the contact element is a contact pin that projects from the base section.

A connector or cable connector module according to the invention may be provided with a plurality of contact elements.

The contact pins of one or more contact elements in a row have a different length than the contact pins of another contact element in the same row.

In the following description, the invention will be illustrated in more detail with reference to the drawings by means of embodiments of connectors according to surface mounting technology, protection plates, cable connectors for ribbon cables, power connectors for surface mounting technology and coaxial connectors. .

Embodiments FIG. 1 shows in perspective two embodiments of contact elements of electrically conductive material placed on either side of a printed circuit board 1, 2 with connecting ends arranged for surface mounting on a circuit board. It is a diagram. The printed circuit boards 1, 2 are provided intermediately between four rows of contact elements arranged essentially in columns, only two elements in each row being shown in FIG.

In the case of the contact element shown on the right side of FIG. 1, a contact pin 4 and a flat connecting edge (tongue) 5 each extend in opposite directions from the flat base section 3. In the case of the contact element shown on the left side of FIG. 1, the contact finger 7.8 extends in one direction and the connecting edge 5 extends from the flat base section 6 in another opposite direction.

As can be seen in FIG. 1, the connecting edges 5 of the various connecting elements are arranged in such a way that they are connected to the printed circuit board 1.2 adjacent to each other in a row and displaced from each other in the longitudinal direction. The connecting edge 5 is beveled in the direction of the printed circuit board 1, 2 and extends from the edge of the flat base section 3 or 6. The connecting edge 5 is connected to the connecting surface t on the printed circuit board 1, 2.
o, tt have a flat section parallel to the circuit boards 1, 2 near their free ends for surface mounting. The connecting surfaces 10 are arranged in a row near the edge and in a row farther from the edge on either side of the circuit board. The inner rows of contact elements are provided directly adjacent to the printed circuit boards 1, 2, the flat portions of these contact units being substantially adjacent to the respective flat base sections 3.
6. It is provided in a plane fixed by 6. The flat areas of the contact elements actually transition smoothly into the contact edges 5 of these contact elements. The connecting edge 5 does not necessarily have to be flat, but may have a circular, oval or polygonal cross-section, for example (and/or to the connecting surface of the printed circuit board 1.2,
It may be narrower than the flat portion 9 for connecting to ti.

Furthermore, the connecting edge 5 has a free end 12 which is bent back at an angle with respect to the printed circuit board 1.2.

In FIG. 1, the connecting edges 5 located on each side of the printed circuit board 1.2 are connected to connecting surfaces 10, 11 which are displaced transversely to the circuit board 1.2 in the direction of plug-in of the connector. . In other words, as mentioned above, the connection surfaces IO are arranged in rows close to the edges of each surface, while the surfaces 11 are also arranged in rows away from each edge. In this arrangement, the central element of the inner row is shown at the bottom of the connection plane lO. The contact elements in the outer rows are located on the circuit board.
- make the connecting edges even more beveled relative to their respective base sections 3.6 and circuit boards 1.2 and contact fronts 11; However, it is also possible to connect the flat edges with surface mounting or connecting edges at equal distances from the edges of the printed circuit board 1.2. Connecting edge 5 and connecting surface 10.
11 are adjacent to each other, the connection of the connecting edges should be of appropriate dimension to avoid undesired electrical contact.

However, as a result of arranging the ends of the connecting edges 5 of adjacent contact elements with the same pitch distance, the connecting edges project on the printed circuit board at different distances from the housing in the plug-on direction of the connector, as shown. Connection surface 10.1
Comparatively wider connecting surfaces 10.degree. 11 can be used than if the 1 extend at equal distances from the housings provided adjacent to each other, ie in the same row. A wider connection area or a wider connection edge 5 and/or a wider;+=flat area 9 not only provides a mechanically stronger connection to the printed circuit board, but also allows a more reliable solder joint. do. The soldered surface is the connection surface 10. In the case of the illustrated mutually displaced arrangement of It, the connection surfaces 10.11 arranged in rows adjacent to one another are relatively far apart, so that there is a risk of an undesired solder connection. Less than the case. As the pitch distance between the contact elements decreases, the a-dynamics in the displacement array of the connecting surfaces becomes increasingly large.

In the embodiment shown in FIG. 1, the connecting edge 5 of each contact element extends in each case from the edge of each flat base section 3, 6 and forms an integral part therewith. It will be clear that the connecting edge 5 can also be arranged to be displaced with respect to the edge of each flat base section 3.6 and for example extend from its center. The contact elements with connecting ends mating to the connectors are arranged on one side of a 4-inch circuit board 1.2 consisting of 6 rows of contact elements as shown in FIG. can be used for

It is of course not essential that the circuit boards 1, 2 as mentioned above are provided intermediate between the rows of contact elements. The connecting ends are provided with, for example, three rows of contact elements on one side of the printed circuit board 1, 2 by each contact end, and one or two rows of contact elements on the other side, depending on the position of the connecting ends. They can be arranged so that as many rows as possible are provided. Furthermore, in the case of connectors with a very large number of contact elements, such a symmetrical arrangement is preferred due to the risk of distortion of the circuit board and wear of the thin conductive racks on the circuit board; It is not important to be connected on both sides of the printed circuit board.

As a result of the mutually displaced arrangement of the connecting edges 5, any soldering or soldering paste present on these connecting surfaces will not be damaged or connected to the corresponding connecting surfaces sliding over it. Only the small portions 9 slide against those connecting surfaces to, tt to which the connecting edges are connected so that they cannot be removed by connecting edges other than those connected. Of course, the connecting surface 10.11 may also have another suitable shape for connecting contact elements other than the rectangular shape shown.

2 is a partially cut away perspective view of two embodiments of a connector module according to the invention in which the contact element of FIG. 1 is used; FIG. 74'i2 On the right side of the drawing, a connector housing 13 is shown, in which the contact ends of the contact elements, designated as contact pins 4, are open on the side opposite the printed circuit board 1. The contact pins are fixed in the rear wall 14 of the housing I3 which is attached to the edge of the circuit board. The side walls 15, 16 of the connector 13 are arranged, for example, between the connector 17 shown on the left in FIG. have The contact element shown on the left side of FIG. 1 is fixed to the rear wall 22 of the connector 17.

As shown in FIG. 2, a cascading base section 3 of contact elements arranged adjacent to each other in rows,
6 narrow edges are provided opposite each other, while the wide surfaces of the flat base sections 3, 6 of the contact elements arranged adjacent to each other in the middle are provided opposite each other. As is known, the capacitive disturbance between two adjacent contact elements is directly proportional to the surfaces of the wide sections that lie opposite each other and inversely proportional to the distance between them, while in FIG. The distance between the contact elements arranged adjacent to each other in the row is relatively small, thus with a large 8-bilateral coupling between them, and the narrow edges of the volcanic base section 3° 6 on the surfaces facing each other. Even if there is, the actual capacity will be relatively small as a result. The converse applies to contact elements arranged adjacent to each other in a row. Although the wide surfaces of the base sections 3, 6 provided opposite each other are relatively wide in nature,
However, as a result of the indicated arrangement of the contact elements, the distance between them is also relatively large, so that the capacitive disturbance remains small. The connecting edge 5 itself may be connected directly to the printed circuit board 1, 2 as shown and may be relatively short;
- This is an advantage associated with the sensitivity to electromagnetic interference and inductive coupling between each connection edge.

As a result of the arrangement described above, the typical minimum pitch distance of 2.54 am between adjacent contact elements in rows and columns is effectively reduced to less than 2 mm.

This results in considerable space savings, especially in the case of connectors that nail a very large number of contact elements;
A high contact element density is thus achieved in a connector of a given dimension.

FIG. 3 is an enlarged partial cross-sectional view of the connector 17 shown in FIG. 2 and connected to the printed circuit board 2 along the line 1--2 in the longitudinal direction. This connector flares outwardly and has an opening 19 on the front side facing away from the printed circuit board, into which contact pins can be inserted for contacting 'resilient contact fingers 7.8' extending from the flat base section 6. 18.

FIG. 3 also shows that the contact elements can all be manufactured in the same way, namely by forming two connecting edges 5 connected to the support strip 21. FIG. During assembly of the connector, one connecting edge is then removed and the other connecting edge is lengthened to the required length to form the flat base section 9 and the bend 12. It is clear that such a universal contact element offers great advantages during the assembly of mass-produced parts such as connectors.

FIG. 4 is an enlarged cross-sectional view of the connector 17 shown in FIG. 2. The contact fingers 7, 8 are bent on their ends connected to the base section 6 over a section of their length in opposite directions from the plane of the base section 6. The two contact fingers 7.8 are again bent toward each other at the end of this section, and a contact surface 23 is provided at the upper free end of each (see FIG. 3). A ledge and a guide (not shown) may be fitted into the channel 2o of the connector 17 in order to prevent longitudinal movement of the contact element and to effect the four contact characteristics of the contact fingers. The sections of the contact fingers 7, 8 which are bent out of the plane of the base section 6 may rest on these lobes and guides.

FIG. 5 is an enlarged view of the rear wall surface 22 of the connector 17 of FIG. 2, viewed from the side from which the connecting edge 5 projects outward. For simplicity, only the two rows on the left are provided with contact elements in the drawing. Flat base section 6 of the contact element
is fixed in a slit 24 in the rear wall 22 of the connector. In the lower left of FIG. 5, unlike the rest of the figure, a cross section of one contact element along the line V-■ in FIG.
3 (see Figure 1). The contact surface 23 may be formed flat or curved.

As can be clearly seen in FIG. 5, a slit 24 for receiving the flat base section 6 or 3 is provided in the center of the channel 20. As a result, the capacitance between adjacent contact elements has the same low value for the entire connector. This arrangement of the contact elements is possible as a result of the fact that the contact fingers 7, 8 are bent in opposite directions from the plane of the base section 6.

The contact pins 4 in the row of connectors 13 shown on the right side of FIG. 2 may be of different lengths (not shown). For example, the longest contact pin can be used for grounding, while the next longest contact pin supplies the supply voltage and the other short contact pins can be used for example for a signal bus. These last-mentioned contact pins may be of equal length. When contacting a connector configured in this manner, first the ground pin, then the supply contact pin, and then the signal contact pin are contacted. This effectively ensures that the device is always first connected to ground so that any fault currents resulting from short circuits or static charges etc. can flow directly to the outside. The contact pin 4 may also have a section different from the illustrated rectangle, for example a truncated oval.

FIG. 6 shows a row of variable length connector modules 131-134 and 171-174 constructed in accordance with the present invention. As can clearly be seen, long rows of connector modules can be formed without loss of space for contact elements. However, to make this possible the wall thickness at the end surface of the connector 13.17 shown in FIG. 2 is less than half the pitch, i.e. the distance between two adjacent contact elements in a row. .

The invention has been described above with reference to a preferred embodiment of a surface-mounted symmetrical connector. The arrangement of the connecting ends of the contact element according to the invention can also be used in connectors with a so-called wiring warp connection, with connectors with a conventional pin/hole connection, in which case the connecting ends are outwardly projecting pins. .

Advantageously, the contact element is formed from a durable spring material. The connector housing may be formed from a thermoplastic polyester synthetic resin such as "RynlLe" FR-530 produced by DuPont. This material allows construction of small wall thickness connectors that are resistant to the high temperatures encountered in vapor phase soldering (VPS) while maintaining mechanical strength and fracture resistance.

FIG. 7 is a partial perspective view of two connector modules 17 connected to the printed circuit board 2, one above the other. The protective plate 27 is shown on the right side of the connector 17 from the direction of its contact opening. A protective plate 27 is provided parallel to the right side wall 25 of the connector 17 at a certain distance on one side of the printed circuit board 2. Does the portion of the protection plate 28 provided opposite the right side wall 25 extend beyond the connector 17? E and shown partially cut away.

Furthermore, the protective plate 27 has an elongated rail 29.
It's happening. A similar protective plate 28 for H the rail 29
is shown parallel to the left side wall 26 of the connector 17.

The rail 29 is fitted with teeth 30 parallel to the plane of each protective plate 27 , 28 in the direction of the front side 18 of the connector 17 . The teeth 30 are insulated with respect to each other and with respect to the guard plate. To this end, the rail 29 can advantageously be formed from plastic, for example by injection molding techniques.

As indicated by the dashed arrow in FIG.
0 must be inserted into the connector 17 at the rear wall 22. The distance between the teeth 30 and their dimensions are such that they can be received adjacent to the base section 6 of the outermost row of contact elements of the connector 17 in the channel 20 shown in FIG. . 3
Another suitable opening for receiving 0 may also be provided in the rear wall 22 so that the protective plate extends parallel to the printed circuit board during assembly as shown in FIG.

For mechanical protection of the electrical components fitted to the printed circuit board 2 (indicated by 32 in FIG. 7), the protective plates 27, 28 may be formed from a suitable plastics material. In order to obtain good electrical isolation, the protective plate may be made of a conductive material t1 or in the form of a plastic, for example provided with an rF 2 conductive layer thereon. The protection plates can also be connected to each other if necessary.
may include a plate section.

As indicated by dashed lines 31 in FIG. Connector 17 may be configured to extend over a longer or partially shorter distance.
In order to prevent as much as possible errors during the contacting of the rails 29 or to avoid making a wrong connection, a breakable positioning projection 33 may be formed on the rail 29.

FIG. 8 shows a printed circuit board 2 fitted on the opposite side with a connector according to the invention. A plurality of storage plates 27 , 28 of different dimensions are provided on the two 11 sides of the printed circuit board 2 . An opening 34 is formed in the protective plate 27 so that the protective plate can be mechanically connected to the printed circuit board 2, for example by screws and spacers. This results in a mechanical connection of the desired strength between the different connectors and the printed circuit board. Side wall 15 of connector 13. In position l[i, the accent protection plate is provided with a rib 35 extending in the longitudinal direction of the connector 13.

This increases the mechanical stability of the guard plate and prevents it from being bent during rough contact of the connector 13. It should be clear that ribs 35 (not shown) extending transversely across the protection plate may also be provided for the same purpose.

As mentioned at the outset, it is especially necessary to connect a portion of another connector or a portion of another printed circuit board with a portion of a connector in a complex system. At the bottom left of FIG. Four adjacent cable connectors 36 of the type shown in FIG. adjacent to each other.

In Figure 9, at a certain distance 11 λ·! Cable connector 36 with two rows of contact openings facing each other
An enlarged perspective view of two cable connector modules with their own housings is shown. Ribbon cable 37 connects conductors mounted opposite each other in channels 38 of each cable connector. The channels extend in the row direction of the contact elements from one side of the housing to the other to prevent undesired electrical contact of these conductors, and the contact elements of the cable connector 36 are connected to each other if two ribbon cable connectors are located opposite each other, the contact elements in the same row are arranged so that only one end of the contact element is provided in each channel 38, so that the contact elements in the same row are small (at least the distance of one position The end of the ribbon cable 37 received in the cable connector is separated from each other by a passage corresponding to the location of the connecting end of the contact element, so that the conductor of the contact end does not protrude beyond the housing 36 after assembly of the ribbon cable. , even if the cable connectors are placed opposite each other, the ends of the contacted conductors will not contact each other.

Of course, the contact elements can be arranged in different ways. For example, the adjacent contact elements of two rows of cable connectors, with even columns white, can each be provided in different rows, and the ends of the ribbon cables 37 received in the cable connectors have castle passages. As mentioned above, the contact element may also have a housing section in which the contact fingers or contact pins extend, the connection part being formed as a plug-on contact (not shown). ). Preferably, the pitch distance between the contact elements is 2fflI11. In Figure 9 as well as in Figure 7,
A breakable protrusion 39 may be installed to prevent erroneous contacts.

FIG. 10 shows a power connector 4 for connecting supply cables and coaxial cables to a printed circuit board by surface mounting.
0.41 and coaxial connectors 4G, 47 are partially cut away perspective views. The previously described connectors are not very suitable for connecting supply cables carrying relatively large currents.

The monopole power connector 40 is essentially a contact socket of conductive material having a spring-loaded contact end for receiving the contact pins and an elongated socket-shaped connector end 43 for connection to a printed circuit board. It consists of 42. The power connector 41 has a pin-shaped 11:shaft end 52 and a similar socket-shaped connection end 43. To make it possible to connect the connecting end 1g to a printed circuit board by surface mounting, the elongated connecting end 43 is
It is provided with slot-shaped four parts 45 in which the printed circuit board 2 according to the invention may be received so that it can be connected to the printed circuit board 2 with two opposing sidewalls.

Practical coaxial connector 4 to connect coaxial plug
8.47 is used. These connectors include an elongated outermost contact socket 48 and an innermost contact socket 4 (not shown) which are insulated from each other and are respectively an outermost contact socket and an innermost contact pin of conductive material.
It has 9.

To enable surface mounting of the coaxial connector to a printed circuit board, a portion of the connecting end of the outermost contact socket 48 is connected to one side of the printed circuit board 2 with the remaining substantially semi-cylindrical connecting end 50 removed from the periphery so that it can be connected to the surface. Part of the jacket of the innermost contact socket 49 or the innermost contact pin is removed so that the remaining connecting edge 51 can be connected to the other side of the printed circuit board 2.

A connector constructed in this way has sufficient mechanical stability and a sufficiently large contact surface so that reliable and mechanically stable connections with printed circuit boards can be made by surface mounting techniques.

In practice, of course, deviating from the embodiment shown in FIG. 10, multiple coaxial connectors and/or stages of power connectors could be applied to a single module housing.

It will be obvious that the invention is not limited to the preferred embodiments described and illustrated, but is susceptible to variations and modifications. For example, without departing from the technical scope of the present invention, the connector module may include locking means or so-called polarity indicators to prevent incorrect connection of opto-electronic connectors, interconnect connectors, connector modules, etc. connected to fiber optic cables. May include.

[Brief explanation of the drawing]

FIG. 1 shows a perspective view of two embodiments of a contact element according to the invention connected on both sides to a circuit board. 2 is a partially cut away perspective view of two embodiments of a connector according to the invention in which the contact elements of FIG. 1 are used; FIG. FIG. 3 is an enlarged partial cross-sectional view along the line III--III in the longitudinal direction of the connector shown on the left side of FIG. 2 and in which the contact element is connected at the connecting end to the carrier stop; FIG. 4 is an enlarged cross-sectional view of the connector shown on the left side of FIG. FIG. 5 shows a second
FIG. 3 is an enlarged view of the rear part of the connector on the left side of the figure. FIG. 6 shows a schematic perspective view of a number of connectors mounted adjacent to each other for surface contact in accordance with the present invention. FIG. 7 is a partial perspective view in an unassembled state of a protective plate connected to two connectors according to the invention with teeth; FIG. 8 is provided on either side of the printed circuit board adjacent to each other and fixed in accordance with FIG. 7 to a number of connectors provided adjacent to each other as shown in FIG. FIG. 3 is a perspective view of a plurality of protection plates. FIG. 9 is a perspective view of two cable connectors placed opposite each other for ribbon cables that can be connected to a four-row connector in accordance with the present invention. FIG. 10 is a perspective view of a surface-mounted power connector and coaxial connector connected to a printed circuit board. 1.2... Printed circuit board, 3.6... Base section, 5... Connecting edge, 7.8... Contact finger, 13.17
... Connector, 19... Opening, 20... Channel, 24... Slit, 27, 28... Protective plate, 35... Rib, 36... Cable connector, 3
7... Ribbon cable, 40.41... Power connector, 42.49... Contact socket, 48.47... Coaxial connector, 43.52... Contact end. Applicant's Representative Patent Attorney Takehiko Suzue Figure 3 Figure 4 Figure 7 Figures 1 and 8 - 1 - System 7 City Stop (Method) 1. 'Representation Patent F1-112774 No. 2, Title of Invention: Module Connector System 3 Having High Contact Element Density Surface Mounted Connector, Person Who Operates Jlii' (Part 1 and Part 1) Name of Patent Applicant: E.I.・Dupont Doe Nemours & Company 4 Agent

Claims (39)

[Claims] (1) a housing of insulating material and a plurality of contact elements arranged in rows and columns in the housing, the rows being arranged substantially parallel to a circuit board and the columns being arranged in a circuit board; , each contact element having a base section with a contact portion and a connecting portion extending from an opposite side of the base section, the connecting portion facing the circuit board. projecting from one side of the housing and adapted to be placed on the contact surface of said printed circuit board, such that connecting portions of adjacent contact elements in the same row are offset from each other and contact the surface of said printed circuit board; Connector for installation on a printed circuit board that is displaced in the direction of. (2) the connecting portion of the contact element is inclined in a plane extending transversely to the one side of the housing, and the connecting portion is arranged on one or both sides of a printed circuit board provided in the plane; The connector according to claim 1, which makes contact. 3. The connector of claim 2, wherein each connecting portion has a flat portion parallel to an imaginary plane near its free end so that the surface is attached to a printed circuit board. 4. The connector of claim 3, wherein the free end of each connecting portion is bent rearward relative to the plane to form a funnel for easily receiving a printed circuit board. (5) the contact elements are arranged in four rows, two of said rows of contact elements are provided on one side of the plane, two of said rows are provided on the other side of said plane and in the same column 3. A connector according to claim 2, wherein the connecting portions of adjacent contact elements in are mutually displaced on each plane surface. 6. The contact element has a flat base section, and the connecting portion is formed as a flat connecting edge integral with the base section, each connecting edge being located at an end of the base section. connector. 7. A connector according to claim 6, wherein the free ends of the connecting edges of adjacent contact elements in a row extend on one side of the plane at different distances from said one side of the housing. (8) The connector according to claim 1, wherein the pitch distance between adjacent contact elements is 2 mm. 9. The connector of claim 1, wherein the thickness of the housing wall at the end end is less than or equal to one-half the pitch distance between adjacent contact elements in a row. (10) The housing is formed on the one surface of the housing and extends vertically adjacent to the side wall of the housing.
2. The connector of claim 1, including more than one row of openings. (11) the guard plate includes teeth mounted along one or more edges thereof, said teeth being arranged in said row in said housing of said connector such that during assembly said guard plate extends parallel to said plane; 11. A protective plate for use with a connector according to claim 10, adapted for insertion into an aperture of the connector. 12. The teeth of claim 11, wherein the teeth are formed on an elongated rail of insulating material, the rail being provided near the edge of the protection plate, and the teeth being spaced a distance from the surface of the protection plate. protection plate. 13. The guard plate of claim 12, wherein the guard plate extends on both sides of the elongated rail. 14. The protection plate of claim 11, wherein the protection plate includes an aperture formed in a plane of the plate, the aperture configured to secure the protection plate to a printed circuit board. (15) The cable connector includes a housing of insulating material with a plurality of contact elements arranged in rows and columns;
Each contact element has a connecting part configured as a plug-on contact for connecting a conductor of a ribbon cable, said cable connector having a plurality of open channels extending in the row direction of the contact elements from one side of the housing to the other. , said channels receive the conductors of the ribbon cable from one side, only one plug-on contact is provided in each channel, and the contact elements provided adjacent to the other side of the housing include two 2. The contact elements in the same row are arranged such that when two cable connectors are installed with the other side located opposite each other, each contact element in the same row is spaced apart from each other by a distance of one or more positions. A cable connector for a ribbon cable connected to the connector described in 1. 16. The cable connector of claim 1, wherein the cable connector includes two rows and an even number of columns, and wherein plug-on contacts in adjacent channels are arranged in separate rows. (17) The connector according to claim 15, wherein the pitch distance between adjacent contact elements is 2 mm. 18. The housing of the cable connector has external dimensions such that two or more cable connectors can be positioned adjacent to each other with respect to one or more contact elements without spatial loss. Cable connectors listed. (19) The contact portion includes two resilient contact fingers projecting from a flat base section with a contact surface located at its free end, the contact fingers extending symmetrically with respect to the centerline in the longitudinal direction of the contact element. , bent in opposite directions from the plane of the base section over a portion of their length at the end connected to the flat base section, the two contact fingers are bent in opposite directions from the plane of the base section such that the contact surfaces are located opposite each other on this part. 2. A contact element for use in a connector according to claim 1, wherein the contact elements are bent back toward each other at their ends. (20) A contact element for use in a connector according to claim 1, wherein the contact portion of the contact element is a contact pin protruding from the base section. 21. The connector of claim 1, wherein the contact portions of the contact elements are contact pins, and the contact pins of one or more contact elements in a row have a different length than the contact pins of other contact elements in the same row. . (22) Claim 2 in which the contact pins of one or more contact elements are long.
The connector described in 1. (23) one or more contact sockets or contact pins surrounded by a housing and having an elongated connecting portion of conductive material for connecting a power connector to a printed circuit board;
A power connector in which the connecting portion is provided with a slot-like opening in which a printed circuit board can be received for connecting the power connector to one or both sides of the circuit board by means of surface mounting means. (24) including one or more outermost and one innermost contact sockets or pins insulated from each other and surrounded by a housing and having a connecting portion of conductive material for connecting the coaxial connector to a printed circuit board; and the outermost contact socket has a connecting part to connect it to one side of the printed circuit board, and the innermost contact socket or pin has a connecting part to connect it to the other side of the printed circuit board by surface mounting means. A coaxial connector that has a connecting part for making connections. 25. The coaxial connector of claim 24, wherein the connecting portion of the outermost contact socket is a generally semi-cylindrical portion of the contact socket extending outside the housing, and the connecting portion of the innermost contact socket is a connecting lip. . (26) a plurality of connector modules mounted on a printed circuit board, each connector module having a housing of an insulating material, and a plurality of contact elements arranged in rows and columns in the housing, the rows being arranged on a printed circuit board; provided substantially parallel to the board, the rows being provided substantially transversely to the printed circuit board, and each contact element comprising a base section and a contact portion and a connecting portion extending from opposite sides thereof. a base section with a connecting portion protruding from one side of the housing facing the circuit board;
configured to be installed on a contact surface of the printed circuit board, and the connecting portions of adjacent contact elements in the same column are displaced in the row direction so as to contact the surface of the printed circuit board offset from each other. module connector system. 27. The module connector system of claim 26, wherein one or more of the connector modules have contact elements, and the connecting portions are contact pins. 28. The module connector system of claim 26, wherein one or more of the connector modules have contact elements, and the connecting portion is a contact. (29) said female contact, each comprising two resilient contact fingers projecting from a flat base section with a contact surface located at its free end, the contact fingers being symmetrical with respect to the longitudinal centerline of the contact element; extending in opposite directions from the plane of the base section over a portion of their length at the end connected to the flat base section, the two contact fingers are arranged such that the contact surfaces are located opposite each other. 29. The modular connector system of claim 28, wherein the portions are bent back toward each other at the ends of the portions. 30. The module connector system of claim 27, including one or more cable connector modules for ribbon cables connected to one or more of the connector modules having contact pins. (31) The cable connector module includes a housing of insulating material with a plurality of contact elements arranged in rows and columns, each contact element being a connecting part formed as a plug-on contact for connecting conductors of a ribbon cable. , the cable connector has a plurality of open channels extending from one side of the housing to the other in the direction of the rows of contact elements, the channels receiving conductors of the ribbon cable from one side and having only one plug-on A contact element is provided in each channel and the contact element provided adjacent to the other side of the housing is the same when two cable connector modules are installed with the other side located opposite each other. Claim 3, wherein each contact element in the row is arranged to be separated from each other by a distance of one or more positions.
The module connector system described in 0. 32. The modular connector system of claim 26, including one or more power connector modules and one or more coaxial connector modules. (33) The power connector module includes one or more contact sockets or contact pins surrounded by a housing and having an elongated connection portion of conductive material for connecting the power connector to a printed circuit board, the connection portion being a surface mounting means. 32. A printed circuit board is provided with a slot-like opening in which the printed circuit board can be received for connecting a power connector on one or both sides of the circuit board.
Modular connector system as described. (34) the coaxial connector module includes one or more outermost contact sockets or pins and one innermost contact socket or pin that are insulated from each other and surrounded by a housing to connect the coaxial connector to a printed circuit board; The outermost contact socket has a connecting part of conductive material for connecting it to one side of the printed circuit board, and the innermost contact socket or pin is printed by surface mounting means. 33. The module connector system of claim 32, having a connecting portion for connecting it to the other side of the circuit board. 35. The module connector of claim 34, wherein the connecting portion of the outermost contact socket is a generally semi-cylindrical portion of the contact socket extending outside the housing, and the connecting portion of the innermost contact socket is a connecting lip. system. (36) one or more protection plates extending parallel to the printed circuit board, the plates having one or more teeth disposed along one or more edges thereof, the teeth being of a housing of the connector module; 27. The modular connector system of claim 26, configured to accommodate insertion into a row of apertures formed in the one side. (37) the teeth are formed on an elongated rail of insulating material, the rail being provided near the edge of the protective plate, the teeth being disposed at a distance from the surface of the protective plate, and the protective plate being arranged on the elongated rail; 37. The modular connector system of claim 36, wherein the module connector system extends on both sides of the connector. 38. The module connector system of claim 37, wherein the guard plate includes an aperture formed in a plane of the plate, the aperture configured to secure the guard plate to a printed circuit board. (39) A claim comprising two protection plates, one on each flat side of the printed circuit board, said plates providing both mechanical and electrical protection to electronic components disposed on the printed circuit board. 39. The module connector system according to item 38.