FR2829623A1 - Isolated electrical wires self stripping cylindrical connector having contact carrier body with receptacle and inserted conical head plug holding wire with body toothed contacts piercing outer/gripping inner wire. - Google Patents

Abstract

The self stripping electrical connector has a hollow cylindrical contact carrier body (10) with a receptacle into which is inserted a conical plug (2) wire guide with central passage grooves. The grooves receive the wires (8). The body has toothed contacts (11) which embed into the wire sleeve forming wire contact when the plug closes.

Description

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 The present invention relates to a self-stripping cylindrical connector for insulated electrical wires.

 It is intended for the connection of strong or weak current wires, multiple gauges, with rigid single-strand or flexible multi-strand, and in particular multi-conductor cables for electronic equipment dedicated to the transmission of analog or digital data.

 To date there are a large number of known connection members making it possible to establish electrical contact without having to strip the insulated wires, but most of them make a flat and single connection, that is to say that the wires are placed side by side to proceed with the connection operation.

 This method causes disparities of an electrical and crosstalk nature, especially at the level of the closest wires.

 The connection is unique because it is taken at a single point on the electrical wire.

 The standardization in force requires for connectors used for networks intended to ensure data transfers the acceptance of bit rates at 100 MHz without signal disturbance. Although recent, this standard is already exceeded. There is a significant gap between the development of techniques aspirated by the market, and the standard-setting bodies intended to federate offers.

 While the cable manufacturers have changed the cables to ensure performance as required, the connection that will be associated with them risks degrading the result, as it is currently ill-suited (round cables, flat connectors).

 The device according to the present invention aims to eliminate all these drawbacks. Indeed, it allows not only to perform, without stripping, the simultaneous connection of a large number of wires, but especially in a cylindrical manner at regular intervals which allows to keep a homogeneous organization of the wires as they were. in the cable sheath.

 The present system also allows multiple connections and disconnections without specific tools and stripping in the longitudinal direction by a

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 or more teeth gives a secure connection of high electrical quality by an increased contact surface.

 It consists of a contact-carrying body provided with a hollow cylindrical receptacle into which a thread guide socket with a frustoconical head which can be locked on the body by a retaining ring and comprising a central cable passage as well as longitudinal lateral grooves receiving the conductors, the body being equipped with toothed contact blades corresponding to each groove and capable of planing the insulation of the conductors to become embedded in the core thereof when the sleeve is in place.

 In the accompanying drawings, given by way of nonlimiting example of an embodiment according to the present application: FIG. 1 is an isometric view showing the three constituent elements of the connector before assembly, FIG. 2 is an enlarged view of the wire guide sleeve showing the detail of a groove, FIG. 3 shows this same sleeve seen from above and FIGS. 4 to 7 are partial axial sections of the device according to the arrows F1 of FIG. 1 showing the successive assembly steps .

 The device, Figures 1 to 7, consists of a body 1 contact carrier, a sleeve 2 wire guide and a notched retaining ring 3.

 The sleeve 2, formed of a cylindrical part 4 and a frustoconical head 5, is pierced in its middle for the passage of the cable 6 and has on its outer face longitudinal grooves 7 distributed over the periphery in order to accommodate the son 8.

 The body 1, which may include a plug or a telephone socket 9 (for example of the RJ45 type), is provided with a receptacle 10 frustoconical female intended to receive the socket 2 and equipped with contacts 11 with multiple teeth rigorously positioned opposite the grooves 7 of the frustoconical head 5 of said socket, the

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 sliding of the latter in the receptacle 10 produces a scraping in sliding movement causing the insulation of the wires 8 to be torn off.

 This sliding stripping technique has the advantage of avoiding the effects of copper bite and thus the initiation of rupture.

 The contacts 11 will advantageously be made of phosphorous bronze. They are cut in the shape of a saw blade and end with a tail 12 to be welded on a printed circuit or to be mounted on the contacts of a socket.

 Fingers 13 on either side of the receptacle 10 make it possible to maintain the socket in the locked position thanks to the retaining ring 3.

 The connector is mounted on the cable by inserting the cable 6, previously stripped over a sufficient length, into the central hole of the socket 2 until the wires 8 come out at the other end (Figure 4).

 The wires are spread around the socket, taking care to place them each in their respective grooves (Figure 5).

 The socket 2 is then introduced into the receptacle 10, a polarizing device allowing correct positioning of the wires between the male part and the female part of the connector.

 The sleeve is finally locked in the receptacle using the notched retaining ring 3.

 The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims (1)

CLAIMS 1 o. Insulating cylindrical connector for insulated electrical wires, intended in particular for the connection of multi-conductor cables for electronic equipment dedicated to the transmission of analog or digital data, characterized in that it consists of a body (1) contacts provided with a hollow cylindrical receptacle (10) in which is inserted a sleeve (2) wire guide with frustoconical head (5) comprising a central cable passage as well as longitudinal lateral grooves (7) distributed over the periphery and receiving the wires (8), the body (1) being equipped with toothed contacts (11) corresponding to each groove and capable of planing the insulation of the wires to become embedded in the core of the latter when the sleeve (2 ) is in place.  2. Device according to claim 1, characterized in that the sleeve (2) is formed by a cylindrical part (4) and a frustoconical head (5).  3. Device according to any one of the preceding claims, characterized in that the contacts (11) are rigorously positioned opposite the grooves (7) of the frustoconical head (5) of the socket (2) a polarizing device allowing correct positioning of said socket in the receptacle (10).  4. Device according to any one of the preceding claims, characterized in that the contacts (11) are cut in the form of a saw blade.  5. Device according to any one of the preceding claims, characterized in that the contacts (11) end in a shank (12) to be soldered on a printed circuit or to be mounted on the contacts of a socket. <Desc / Clms Page number 5>  6. Device according to any one of the preceding claims, characterized in that the contacts (11) are made of phosphor bronze.  7. Device according to any one of the preceding claims, characterized in that the sleeve (2) is locked on the receptacle (10) by means of a retaining ring (3) notched by means of fingers (13) provided for on either side of the receptacle (10).  8. Device according to any one of the preceding claims, characterized in that the body (1) comprises a plug or a telephone socket (9).