DE2508343A1 - Terminal pin for double-sided PCBs - has head and knob t opposite end of shank to engage V-recess in head of second pin - Google Patents

Abstract

The terminal pin, for double-sided PCBs has a cylindrical head witha V-shaped recess (26) in its top surface, a shaft that passes through the PCB, and a knob at the opposite end of the shaft. The pin can be constructed to form an electrical connection with one or both sides of the PCB. THe knob of one pin can fit into the v-shaped recess of another pin in a PCB below it --- thereby forming an electrical connection between boards. The pin may also have a hollow core to accept the terminal wires of resistors for through connection or direct connection.

Description

Connection part circuit boards used in the miniaturization of electronic devices are increasingly preferred. Such sha Circuit boards have conductor tracks of a circuit or of circuits that are on a or both sides of the circuit board by any known method are. Connections of circuits or components outside the circuit board must be used when assembling the electronic equipment for a particular facility can be made with these circuits. Because of the small dimensions of the Circuit boards and the structural elements, making these connections is difficult and mechanical Making these connections is time consuming. There is therefore a need for a device through which these connections with a minimum of time and can be manufactured at low cost.

Often in the prior art, instead of standard printed circuit boards uses highly specialized printed circuit boards or modules, whereby the Cost of multilayer circuit board configurations and the various Connections between them are increased.

It also makes the connection between circuits on adjacent ones Plates pose a particular problem because of the precise alignment of the connectors between the panels is required. There is therefore a need for connectors in which a lower accuracy is required, thereby reducing the tolerance to compensate summation that may result.

Such connecting parts break away from the conventional technology of the printed circuit boards and unified circuit boards gr all configurations Use is intended for the simple connection of integrated circuits (IC) chips can be used as they are currently in large quantities and with can be produced at low cost, such as plug-in housings (DIP) or lead-free IC circuit components. The connection should be made without the use of special tools, such as tools for producing winding connections and three-dimensional configurations for interconnecting IC chins should be able to be produced with high density. It would be with such connecting parts no special tools required and with proper attachment of these connecting parts electronic equipment can be assembled in a relatively short time.

The modification of the electronic equipment is easy achieved by replacing or relocating the connecting parts.

The invention creates a connecting part which is flexible, elastic and is conductive and in a circuit board as an electrical connection between Circuits is introduced on one or more standard circuit boards.

The invention further provides a conductive double ended connector made of plastic that can be easily inserted into a standard circuit board and only in that it is inserted into the plate, as an electrical connection is working. The connection also creates a plug which has a central guide hole for receiving and guiding a connection pin on an external component and thereby establishes the desired electrical connection.

In addition, the invention provides a connector, which in particular is suitable for use with plug-in housings. The invention also provides a connector assembly used in multilayer circuit board configurations for making electrical connections between the various circuit boards is usable.

According to the invention, the connecting part is a two-sided plug, which has a shaft that has a large head at one end with a widened Bracket or smaller head at the other end connects and is elastic with it it can be inserted and retained on a standard circuit board, and is also conductive to make the desired electrical connection after insertion into the circuit board. The surface against the circuit board the head of the connector for contact with the board surface and one on it circuit is flat. The shaft of the plug is slightly shorter than the thickness of the plate and the circuit on it, so that the shaft after to the Insertion is stretched and thus serves to keep the head secure to hold on in his position.

The head and holder are matingly shaped so that a Connector in one circuit board a mating connector in one above lying circuit board, for an electrical connection between a circuit on each of the two circuit boards is the head of a plug takes up the holder of the other connector. In a further development of the invention. the Connecting part a central guide hole for receiving a connector pin external electronic component for establishing a connection of the circuit the plate with the outer component. The connector provided with the hole is in particular suitable for use with plug-in housings. A V-shaped groove in the head takes up the conventional widening at the connector pins of the plug-in housing.

The connecting parts can, for example, also be in IC circuit modules can be used in flat packs or lead-free IC circuit modules. This type of circuit building block is made up of a small section of printed circuit board held, which has a rectangular recess for receiving the body of the flat housing has, or there can be guides for positioning on the basic circuit board the flat housing or lead-free circuit module can be provided. With A suitable arrangement of the connector plugs can make proper connections with the contacts located on the surface on the lead-free IC circuit module or the horizontally extending leads on the flat housing will.

Several embodiments of the invention are in the drawings and are described in more detail below described. Show it: Fig. 1 is a section through a circuit board in which a connecting part or plug is located, Fig. 2 at right angles to the view of Fig.

1 is a side view of the plug before it is inserted into the circuit board, FIG. 3 shows a plan view of the arrangement of FIG. 1, FIG. 4 shows a sectional view one in each of two circuit boards of a multilayer circuit board configuration arranged and forming connections between circuits on the two boards Pair of plugs, Fig. 5 is a sectional view of a single plate with plugs therein, which have a modified shape and are used in a plug-in housing, FIG. 6 shows a sectional view at right angles to FIG. 5, and FIG. 7 shows a plan view the circuit board and connectors of Fig. 6 prior to attaching the plug housing.

Figures 1 to 3 show the invention in connection with a standard circuit board arrangement, comprising the plate 2 with a circuit 4 on one of its sides in Form of a conductive strip, which is in the plane of Fig.

1 extends. This strip is shown in top view in FIG. The circuit board can also have another circuit 5 on the other side have, and this circuit is perpendicular to the plane of Fig. 1. In which the Circuit 4 forming strip is formed a hole 6, which is larger than and is concentric with a hole 7 in the plate 2. There is a hole in the strip 5 8 is formed, which is also concentric with the hole 7 in the plate.

The connector or connector 10 according to the invention has the shape of a two-sided plug with a shaft 12, which In the hole * is arranged in the plate and has a slight fine fit therein, so that the Connector will remain firmly in the assembly position without significant transverse movement. The shaft has a large head 14 at one end. This head is wider than the dimension of the hole E and overlaps part of the strip or circuit 4 The other end of the shaft 12 has a smaller head or holder 16 that is kB enough is dam; it is compressed to pass through the hole 7 in the plate 2 but is big enough. so that it expands and the plug in his Position in the hole in the plate so that the underside l7 of the head 14 is in firm contact with the circuit 4. The head 14 has a larger diameter than the hole 6 so that it overlies the circuit 4 as shown in FIG. 1.

The transition from the holder 16 to the shaft is frustoconical Part I8 which rests at the end of the hole, as in Fi. ! shown and the in a cylindrical part 20 of the holder goes over This cylindrical part 20 is something wider than the diameter of the hole, like shown. The outer End 22 of holder 16 is wedge-shaped, as shown in FIG. 1, and terminates in a rounded tip 24, and the opposite ends of the wedge are for ease Insertion through the hole in the plate tapered slightly as shown in Fig. 2.

The underside 17 of the head 14 is flat and perpendicular to the axis of the plug. The top has a V-groove 26 with the same taper as the wedge-shaped one End of the holder 16. The V-groove and the rounded tip 24 on the head 14 and the holder i6 are parallel to each other, as shown in Fig. 2, and the outer part the side wall of the head can be beveled slightly as shown. The holder 16 is sized to fit the strip or circuit 5 on the perimeter of the hole 8 formed therein is not touched, as shown in FIG. The distance of the Underside of head 14 from frustoconical portion 18 on holder 16- is so large that the shaft 12 is somewhat stretched when the plug is inserted into the plate is so that the head 14 is resiliently held on the circuit 4.

The connector or connector consists of a elastic conductive material which is compressible enough to make the holder 16 can be passed through the hole in the circuit board. The material is preferably a conductive silicone or fluorosilicone elastomer in which each other continuously touching particles of a conductive material are embedded, the exposed on the surface of the same. Such particles can be incorporated into the elastomer be embedded silver lattice.

Suitable elastomers that retain their compressive strength, which is set to temperatures suitable for use in this environment, are the Silastic rubbers manufactured by Dow Chemical. Such Plugs will make electrical contact with the circuit 4 manufacture and serve as a component in a closed electrical circuit, such as evident.

An example of the dimensions for a connector of this type is a Shank with a diameter of about 1 mm, which goes into a hole of similar size fits in the standard circuit board. The head 14 has a diameter of approximately 2 mm and a thickness of about 1 mm. The V-groove can have a depth of about 0.4 mm. The shaft is up to the frustoconical part 18 about 1.4 mm long and this Part has a length of about 0.3 mm. The wide part of the holder 16 has a diameter of about 1.3 mm and a length of about 0.45 mm. The wedge-shaped part is about 0.5 mm long.

These dimensions are for use of the connector in a standard circuit board with a thickness of 1.6 mm is suitable.

These plugs are easily brought into their operating position by the holder is compressed and pushed through the hole in the plate. After insertion, the holder 16 jumps back to its full size and thereby, that it rests on the surface of the plate around the hole 7, it is used for Hold the connector in place. The connector 10 serves as a component in an electrical connection which includes the circuit 4, and it is provided that he has another electrical contact, another electrical Circuit or an electrical component either on the other side of the board, on an adjacent circuit board or in or on an electronic component touched outside the plate. Other uses for this connector 10 arise for the person skilled in the art once such a connector is available to him stand.

There are several possible uses for this connector from the DsrsXwellen in Fig. 4. Two circuit boards 32 and 62 lie on top of each other as in multi-layer panel configurations. Any of these panels has a circuit 34 or 64 on the top, each at a distance from one another having holes 36 and 36 'in circuit 34 and holes 66 and 66' in FIG Circuit 64. Each plate also has a circuit 35 or 65 on the underside with holes 38 and 68 respectively formed therein. Holes 36 and 38 are toward hole 37 concentric in the plate 32 and the holes 66 and 68 are to the hole 67 in the Plate 62 concentric. When the plug 40 is inserted into the plate 32, so that the head 44 is in contact with the circuit 34, and when the plug 70 in the plate 62 is inserted and is in contact with the circuit 64, becomes a electrical connection between these two circuits 34 and 64 through this Connector is made simply by placing the two plates next to each other will. The key 52 on the plug 40 and the groove 86 on the plug 70 mate and establish a permanent electrical connection between the two circuits.

Instead, if the electrical connection between the circuit 65 on the underside of board 62 and circuit 34 on top of the board 32 is to be produced, the head of the plug 70 ′ is taken from the circuit 64 isolated by an insulating washer 71 and it connects to the circuit 65 made by a conductive disc 73 which surrounds the connector and which through the holder of the plug is pressed against the circuit 65. Serve in this way the plugs as parts of the electrical connection of the shade 4 jr t of the circuit 65, by simply placing the two alattes with d-n plugs in them one above the other will.

Thus, the Saar of plugs forms an arrangement for connecting the both circuits 0 The head of the plug is generally designed in such a way that that it does not come into contact with the circuit on the underside of the plate above as is the case with connector 70. As a modified embodiment by the plug head is made thicker or higher, such as the head 74 ' of plug 700, the top of the head contacts circuit 35 on the bottom the plate 32 and thereby includes this circuit in the plug 40t and 70 'an electrical connection formed. Further modifications and alternatives offer themselves to the expert, if he knows the structure and usability of this connector have only once become known.

Another use for the connector is connection of corner housings or other external building blocks with selected formwork. For example, as shown in FIGS. 5 and 6, there are 102 plugs in the plate 110 and 110 'introduced. The connector 110 is with the circuit 104 on top the plate in contact and the plug 110 'is isolated by a washer 171.

This plug 110 'is connected to the lower circuit 105 through a conductive Disk 173 in contact. In each connector there is a central recess 111 or 111 ° educated. These recesses take protruding pins 11 @ or 113 '(FIG. 6) the spaced parallel rubbing of connector pins on one Plug housing 115 and make suitable electrical connections With these pins, the pins of the plug housing can be pressed into the plug will. each of which is not a recess for receiving the pen anfwei @@@ es however, less pressure is required to insert the plug if the Löc @@@@ @@@@@@@ n plug-in housing can @ thus be pulled out in DZ WZ- and reinserted @@@ kt @ earth @ @without that the plug-in housings or the s @@@ joints of the same will be damaged.

Because these parallel rows of pins are in working order are not always exactly parallel, the V-notches 126 and 126 'and holes serve as guides that guide the pins into the recesses in the plugs.

It can be seen that the V-notches are parallel to the rows of pins on the connector housing as shown in FIGS. In addition, these pins are not round but flat, so that although the pins the recesses do not fill in one direction (Fig. 6), they the width of the Have recess in a direction perpendicular thereto, as shown in Fig. 7, so that by inserting the plug-in housing into the one shown in FIGS Position a firm contact is established.

By inserting the pen, the head is stretched a little and the pressure of the head on the circuit under the head increases.

The row of plugs to accept each row of pins on one Plug housings can be constructed so that they are inserted as a unit can. Therefore, the plugs llo and the other plugs in the same row become, for example the connector 110 ″, connected to each other and at a reasonable distance from each other by integral webs 117 are arranged between the adjacent heads, see also Fig.

7, which serve to set the group of plugs in such an arrangement to hold together that the entire group at the same time in appropriately arranged holes Can be inserted into the circuit board, making assembly much easier will. The webs 117 are in line with the V-grooves in the connectors and have such a length that adjacent plugs are the same spacing as the hole spacing and also like the standard spacing of the pins on the plug housing to be inserted into the plug to have.

To avoid an electrical connection between neighboring The webs 117 consist of plugs in this arrangement preferably of a non-conductive material such as known elastomers, for example Silicone elastomers, so that the individual plugs are isolated from one another.

These bars can be attached or during the molding process by other suitable methods. The omission of the conductive material in the elastomer A simple solution would be in this area. This arrangement of connectors and bars can be manufactured as long strips of plugs in a continuous process which are cut to the appropriate length at the webs.

IC modules in flat packs or lead-free integrated circuit modules can be accommodated by these plugs, making very dense configurations possible are.

The case is held in place by a small section of a Printed circuit board held in place, which has a rectangular cutout for receiving of the body of the housing, and the configuration of connectors is designed so that it touches the leads in the housing. Likewise with the lead-free Integrated circuit module made a cutout that the central bulge in the housing, and the plug configuration is designed so that it touches the leads in the surface of the housing.

According to the description above, the plug is made of a conductive one Made of elastomer, but under certain circumstances it may be desirable that a non-conductive elastomer is used, on the surface of which a primer is used made of pure silver in a vinyl polymer, for example from the company Technical Wire Products, Cranford, New Jersey, V.St.A., by painting, Spraying or other coating is applied.

The result is a compliant coating that is excellent electrical conductivity, adhesive strength and flexibility as well as good impact resistance Has.

Within the scope of the invention, the person skilled in the art is offered by the described preferred embodiments also a large number of possibilities for simplification and improvement.

Claims (17)

P a t e n t a n s p r ü c h e: 1. Connector for establishing an electrical connection between Circuits on circuit boards, characterized in that it consists of a conductive consists of elastic polymer and has a shaft (12) which is in a hole (7) can be arranged in a circuit board (2), and that the shaft on each End has a head (14, 16, each of which has a larger diameter than the shaft have and are shaped so that the connecting part is resilient within the hole is held, whereby during or after the insertion of each head over one another weighs and contacts opposite surfaces of the plate, with a head (14) extends over part of a circuit (4) on the plate (2) and with this is in touch. 2. Connection 1 according to claim 1, characterized in that the Shank (12) of the connecting part is shorter than the thickness of the plate (2) and the printed circuit on it. 3. Connection part according to claim 1 or 2, d a d u r c h g e characterized, Cas the underside of the larger head (14) for contact with the plate surface and the circuit (4) is there 4. Connecting part according to one of the claims 1 to 3, characterized in that a head (16) when being inserted into the hole (7) in the plate (2), which has a smaller diameter than the head (163 , is deformable 5. Connection part according to one of claims 1 to 4, characterized in that g e k e n n n n e c h n e t that the head (16) through the plate (2) passable and is substantially smaller than the other head to serve as a holder. 6. Connecting part according to one of claims 1 to 5, characterized through a central through opening for receiving a connector pin (113, 113, 113 ''). 7. Connecting part according to one of claims 1 to 5, characterized in that that the material of the connecting part has such a density and consistency that it can be penetrated by an outer component connecting pin (113, 113 ', 113) can allow contact between the pin and the circuit (104) on the board will be produced. 8. Connecting part according to one of claims 1 to 7, characterized in that that the larger head (14) is provided with a notch (26). 9. Connecting part according to one of claims 1 to 7 for circuit boards for making an electrical connection with at least part of a circuit on a surface of a circuit board that is in the vicinity of this circuit part has a hole, characterized in that the dimension of the larger head (14) is so large that it is close to above said part of the circuit (4) of the hole (7) and is in contact with this part in order to establish an electrical connection to produce with the same when the connecting part is inserted into the hole. 10. Connecting part according to claim 6, characterized in that the conductive elastic polymer has such a density and consistency that it has a receives the outer component connection pin and is thereby expanded. 11. Connecting part according to one of claims 1 to 9, characterized in that that the shaft (12) has the hole (7) essentially fills out. 12. Connection arrangement, characterized by a circuit board, which is provided on one side with conductor tracks of a circuit and a hole zs Receiving the connecting part according to one of claims 1 to 11. 13. Connection arrangement according to claim 12, characterized in that that two circuit boards (32, 62) with one arranged in a similar manner Connection parts (40 or 70; 40 'or 70') are provided in each plate and that the plates are placed one on top of the other so that the connecting parts are in contact, thereby making electrical connections between the circuitry (36 ', 66') on the two Plates are made that lie against one another via the connecting elements 14th Connection arrangement comprising several connection parts according to one of claims 1 to 11 for making electrical connections between circuits on standard circuit boards, characterized in that a web (117) each of the heads of the connecting elements connects with each other and the connecting elements parallel to each other and in such Keeps the fasteners spaced apart from each other arranged holes in the circuit board fit. 15. Connection arrangement according to claim 14, characterized in that that the webs (117) are non-conductive, so that they electrically connect the connecting elements isolate from each other. 16. Connection arrangement according to claim 14 or 15, characterized in that that the heads have notches (126, 126 ') and that the webs (117) so on the connecting elements are formed that the notches in the different heads in one line are aligned. 17. Connection arrangement according to claim 16, characterized in that that the connecting parts have central recesses (111, 111 ') that the webs (117) carry the connecting parts so that they support the connecting pins (113, 113 ', 113 ") a plug-in housing, and that the recesses, the connecting pins pick up and guide to relieve introductory pressures. L e r s e i t e