EP1306933B1 - Guiding system for contact plug - Google Patents

Abstract

The electrical connector has a plug (1) that has an intermediate plate (7) from which projects a metal pin and other location elements (8). The socket has a pl0astic body and is formed with a removable contact sleeve (2) that is retained by a clip (13). When brought together the pin engages first followed by the other contacts.

Description

The invention relates to devices for the correct connection with each other connecting electrical components.

Such devices are known in many different embodiments and in use. With these devices, electrical components, such as, inter alia, electrical contacts, plugs, power strips, blade and socket connectors and printed circuit boards, boards or the like are each connected in the correct position with each other. With these devices it is achieved that the sensitive electrically conductive components, e.g. the blades or springs are connected in the correct position with each other or inserted into each other to prevent bending and thus damage the same in the manufacture of electrical contact.

For this purpose, the device has a so-called pin, which in Connecting direction of the two components on the component to which it is arranged, projects to be plugged into a complementarily shaped sleeve on the other component. Due to the protruding design of the pins, it is ensured that the electrical contacts are themselves connected to one another in the correct position.

There are connecting devices are known in which the pin passes through an opening which is provided in a usually laterally projecting beyond the first component wall portion. To fix the pin on this first wall portion or the first component is this via a screw with a nut on the back, i. of the side facing away from the second component. This allows the pin to be e.g. in case of damage thereof due to incorrect mating, be replaced.

Document US-A-60 74235 discloses a device according to the preamble of claim 1.

Based on this prior art, the skilled artisan has the object to improve a connecting device to the effect that the pin is arranged against rotation on the first component.

This object is achieved by a guide system for contact plug with the features of claim 1, in particular of the characterizing part. advantageous Embodiments of the invention are the subject of dependent claims.

The core idea of the invention is that, in the case of the new guide system, a collar projecting beyond its peripheral surface is formed on the said pin. This pin generally has a substantially uniform cross-section over its axial extent. Only at the location of the collar, this cross section is extended or changed by protruding beyond the other peripheral surface projections. This collar is used according to the invention in a recess of an intermediate plate, so that the pin, relative to its longitudinal axis, is fixed against rotation to this intermediate plate at this. The intermediate plate in turn is also arranged against rotation with respect to the wall portion of the first component at this.

The advantage of the invention is that an axial twisting of the pin is avoided relative to the component to which it is arranged, so that accidental loosening of the screw with the nut, on the back of Wandungsabschnitts is avoided.

To facilitate insertion of the pin into the sleeve, on the second component to be connected to the first is arranged, the opening of the sleeve, which faces in the direction of the pin, provided with a conical extension, in particular in the form of a funnel. Likewise, the pointing to the sleeve tip of the pin may be conical or tapered or rounded.

In order to obtain an exact alignment of the two components to one another, it is further proposed that further alignment devices, in particular in the form of projections, be provided on the intermediate plate and / or on the sleeve. These projections protrude, for example, in the insertion direction over the intermediate plate. The arranged on the sleeve alignment device is for the correct alignment of the two components to each other with complementary projections and / or depressions, in which the projections of the intermediate plate can be brought into engagement provided. Thus, the two components are exactly aligned with each other, wherein the projections or the further alignment device is designed such that the exact alignment prior to actually interconnecting the electrical contact elements, e.g. Knives and springs, done.

To obtain a stable pin, this is made of a metal, so that on the one hand it is easy to manufacture and yet inexpensive. Preferably, the electrical pin is as well as the sleeve, in which it is inserted, electrically contacted, so as to produce a short to ground between the two components, before the, in particular further, electrical contact elements themselves are interconnected. This avoids possible damage due to the discharge of static electricity. For this purpose, the sleeve can either be made entirely of metal itself, with a corresponding connection to ground, or it is at least partially formed on the inside electrically conductive, eg coated.

For permanent connection of the two components with each other is further proposed that on the pin a cross-sectional reduction or extension is formed in the form of a latching projection which cooperates with a correspondingly formed locking projection in the interior of the sleeve. For this purpose, the latching projection is preferably designed as a circumferential reduction around the pin. Likewise, such latching projections / cross-sectional reductions can also be arranged on the above-described projections of the other alignment devices.

For the correct alignment of the pin with respect to the intermediate plate or the first component of the collar is formed in the form of two opposing projections, so that the pin by these two radially projecting arms or sections in a correspondingly formed recess of the intermediate plate is used against rotation. In principle, the collar but also any other non-round or asymmetric shape can be borrowed, for example in the form of an N-corner, in particular triangle, square, pentagon or hexagon.

In an advantageous embodiment of the invention, both intermediate plate with the alignment devices arranged thereon, and the sleeve with correspondingly formed projections / recesses each consist of integrally formed plastic components, which can be produced in a simple manner, in particular by injection molding.
With such a configuration, it is possible to fix the respective elements of the connecting device by inserting further projections in further openings of the respective wall sections of the components to be joined together at these wall sections. The elements can also be fastened firmly to these wall sections, for example, with a further screw.

In an embodiment of the sleeve in plastic, the electrical contacting for producing a ground connection, for example, take place in that the interior of the sleeve is coated electrically conductive and contacted accordingly. In principle, it is also conceivable that the sleeve on the Opening opposite end is formed open, so in the form of a tube, so that the pin protrudes beyond the tube at this other end and in turn is electrically contacted to the second component.

An electrically contacted, mechanical spring can also be arranged on the sleeve, which engages through the sleeve of the sleeve in order to produce an electrical contact, in particular the grounding, between spring and pin when the pin is pushed into the sleeve. In this way, grounding is achieved before the actual electrical contacts touch each other. The spring can, in the inserted state of the pin, also engage in a detent recess on the pin.

Figur 1

eine Verbindungsvorrichtung in perspektivischer Ansicht, und

Figur 2

eine weitere perspektivische Ansicht.

Further details, features and advantages of the invention can be taken from the following description part, in which an exemplary embodiment of the invention is illustrated in more detail by means of drawings. Show it:

FIG. 1

a connection device in perspective view, and

FIG. 2

another perspective view.

In the embodiment of the invention shown in the figures is a connection device for two electrical components. At a wall portion 3 of the first component, an intermediate plate 7 is arranged with a recess. Both intermediate plate 7 and wall portion 3 are penetrated by a pin 1, preferably a metal pin, wherein the pin 1 has over the circumference of the same projecting collar 6, which is inserted into the recess of the intermediate plate.

To connect the two electrical components together, they are in the insertion direction "E", as indicated by the arrow, moved towards each other. To facilitate the insertion of the pin 1 into the sleeve 2, the tip 1a of the pin 1 is tapered, and the opening 2a of the sleeve 2 is provided with a conical enlargement. The sleeve 2, preferably also an injection-molded plastic component, is arranged on a further wall section 4 of the second electrical component.

For the correct alignment of the two electrical components to each other 2 further alignment devices 8, 8a are provided in the form of mutually corresponding projections and recesses on the intermediate plate 7 and the sleeve. These alignment devices 8, 8a are either integrally formed on the intermediate plate 7 or sleeve 2, but can also be designed as releasable, replaceable further elements.

As can be seen in Figure 2, an opening (e.g., a through bore) is provided on each of the first 3 and second wall sections 4 to secure the intermediate plate 7 and the sleeve 2, respectively, by means of a nut 5 and a screw 10, respectively. For alignment of the sleeve 2, and optionally the intermediate plate 7, pins 12 are integrally formed on these same (2; 7), which in each case in an opening (11) in the wall sections 3, 4 on or pass through.

The pin 1 is detachably fixed on the back of the first wall portion 3, which faces away from the sleeve 2, with a nut 5 which can be screwed onto the pin 1.

As can be seen from Figure 1, a continuous circumferential cross-section reduction 9 is formed on the pin 1 for generating a locking projection, which can cooperate with a complementary shaped locking lug, not shown here, inside the sleeve 2 for releasably securing the two electrical components together.

On the sleeve 2, a spring 13 is arranged, with which an electrical contact, in particular for grounding, between spring 13 and pin 1 can be produced. This makes it possible to ground the components to be connected together, before the actual electrical contacts are engaged.

LIST OF REFERENCE NUMBERS

1

Pin code

1a

Tip of position 1

2

shell

2a

Opening of position 2

3

Wall section of a first electrical component

4

Wall section of a second electrical component

5

mother

6

Collar at position 1

7

intermediate plate

8, 8a

alignment

9

Cross-sectional expansion or reduction

10

screw

11

Opening in position 3

12

Pins at position 2

13

feather

e

insertion

Claims (10)

1. Connecting device of two electrical components, particularly for plugs, multiple plugs and multiple sockets as well as plug cards, circuitboards or the like, with a pin (1) arranged at the first component and sleeve (2), which is arranged at the second component for reception of the pin (1), wherein the pin (1) engages through an opening at a wall section (3) of the first component and is fixed by a nut (5) arranged at the rear side of this wall section (3) and threadable onto the pin (1), wherein the pin (1) is provided at its circumferential surface with a collar (6) protruding over the pin (1), characterised in that the collar (6) is inserted into a cut-out, which is formed to be complementary to the collar (6), of an intermediate plate (7) and the intermediate plate (7) is arranged at the wall section (3) of the first component.
2. Connecting device according to claim 1, characterised in that the opening (2a) of the sleeve (2) is conically widened and/or the tip (1 a), which faces the sleeve (2), of the pin (1) runs in conically.
3. Connecting device according to claim 1 or 2, characterised in that a further aligning device (8) for positionally correct connection of the two components is provided at the intermediate plate (7) and/or a device (8a) of complementary construction is provided at the sleeve (2).
4. Connecting device according to one of the preceding claims, characterised in that the pin (1) consists of metal and, in particular, pin (1) and sleeve (2) are electrically contactable and are connectible with ground.
5. Connecting device according to one of the preceding claims, characterised in that the pin (1) has a cross-sectional narrowing (9) in the form of a detent projection, in particular the cross-sectional narrowing (9) extends continuously around the pin (1).
6. Connecting device according to one of the preceding claims, characterised in that the collar (6) is constructed in the form of two opposite projections.
7. Connecting device according to one of claims 1 to 5, characterised in that the collar (6) is of asymmetrical construction.
8. Connecting device according to one of the preceding claims, characterised in that the sleeve (2) can be fixed by a screw connection (10) to a wall section (4) of the second component and/or the intermediate plate (7) can be fixed by screw connection (10) to a wall section (3) of the first component.
9. Connecting device according to one of the preceding claims, characterised in that the sleeve (2) is formed at the end remote from the pin (1) to be open and for engagement through the pin (1) the pin (1) in particular is provided at its end engaging through the sleeve (2) with a detent enlargement for fixing to the open sleeve (2).
10. Connecting device according to one of the preceding claims, characterised in that a spring (13) for contact-making of the pin (1) is provided at the sleeve (2), particularly a spring (13) with a detent device.

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