MXPA97003220A - Procedure and connection device for self-discused contacts - Google Patents

Abstract

The present invention relates to a method and a releasable and positively connecting device for electrical cables in self-descending slits. The rotary connection pusher is closed by means of a closing latch supported by a tongue and cooperating with a closing stop. The closure is produced after the passage of a hard point and causes a clearly audible click or "click", which indicates to the installer that the self-undressing connection of the cable has been carried out positively.

Description

PROCEDURE AND DEVICE PE CONNECTION BY SELF-DENTISTRY CONTACTS DESCRIPTION OF THE INVENTION The present invention relates to a method and a device for connection by self-desoldering contacts. Quick connections by contacts with self-undressing slits are now widely spread in the industry, particularly in the telephone and computer connections industry. EP-A-0585199 discloses a female plug or jack of the "jack or modular plug" type and an integrated connection. The modular jack contacts on the front mouth of this plug are made on the back on two series of self-emptying contacts. The connection of a telephone line holstered in the rear part of the plug is then effected, without special tool, by the closing of two respective rotating covers which serve, by trapping the wires in their respective receiving self-emptying slits, with rotating connecting pins. This type of rotary pusher is very practical, but in fact does not guarantee a total safety of operation because the installer never has the absolute certainty of having made his connection. On a very large number of connections to be made each day, it may be the case that, in some of them, the rotary pusher has not really undergone sufficient rotation and consequently the corresponding threads have not been properly connected. The invention aims to remedy this drawback. This effect refers to a method of connecting strands sheathed by trapping, by means of a rotary pusher of the tilting hat type, of these threads in self-descending receiving slits, characterized in that it consists in providing an elastic element that is integral with this pusher rotating and tensing during the rotation of this pusher for the application of these threads in these grooves and then is released abruptly, at the end of the stroke of this pusher, to make it hit sharply against the nose of a hard body that is prominent with relation to the maintenance means of metal contacts with self-undressing slots and that is integral with this medium, so that a clearly audible click is obtained that signals to the assembler that the self-undressing connection has been made positively and whose sound intensity is at least equal to 45 decibels A. Advantageously, this sudden shock is created by the of a locking pawl of this pusher at the end of its stroke, this pawl being tensioned in an open position before release and locking in the moment of its abrupt end-of-stroke shock. Typically, the audible sound thus produced is of intensity at least equal to 45 Decibels A. The invention also relates to a device for carrying out this procedure, this device being characterized in that said connecting pusher is a rotary pusher of the genre of swiveling hat, comprising an elastic ratchet for blocking the end of stroke, this pawl cooperating with a fixed locking stop by entanglement at the end of stroke and cooperating this entanglement stop with this pawl to create a hard pitch corresponding to a tension maximum of said pawl and to abruptly release this pawl in blocking position against the entanglement stop immediately after the passage of this hard point, then the sudden ratchet of the pawl against its receiving piece causing said audible click. Either way, the invention will be better understood and its advantages and other features will be better highlighted during the following description of a non-limiting example of embodiment with reference to the accompanying drawing in which: Figure 1 is a perspective view of the back of a telephone or computer socket, this rear part forming a connection device, by means of self-disconnecting contacts, of telephone or computer lines, with a wire arranged to be connected and the connection pusher in the open position. Figures 2 to 4 show, in partial and longitudinal section according to IV-IV of Figure 5, the successive phases of connection of this thread.

Fig. 5 is a view in horizontal section according to V-V of the figure Figure 1 shows the back of a monopar modular jack. This plug comprises two metal self-unloading contacts 1, 2 which, in this embodiment, each comprise two self-undressing slits, as is the case for those described in document E P-A-0.585. 179 already cited. As best seen in FIG. 2, these two metal self-disconnecting contacts 1, 2 each consist of two metallic thicknesses and are held in the rear plastic body 3 of the plug. Of course, these self-destructing contacts could each consist of a single metallic thickness. This plug has, similar to that according to document EP-A-0,585,179, a rotary connection pusher 4 made of plastic material which is made in the form of a tilting hat or cap, the rotation of this pusher 4 being carried out around a axis 5 which is parallel to the row of self-disengaging contacts 1, 2. In figure 1, the two pairs of pusher-blades 61, 62 and 63, 64 that will come to catch, are clearly distinguished, when they are going to return to closing the tilting hat, the threads to be connected in their receiving self-unloading slits, respectively of the metallic contact 1 and of the metallic contact 2. For illustrative purposes, figure 1 shows a sheathed telephone wire 6 is placed in contact 1, at the entrance of its second self-undressing groove, and which is therefore arranged to be connected by closing the rotating connecting pusher 4. According to the invention, the tilting hat, or rotary pusher, 4 to an elastic ratchet 7 for end-of-stroke locking, this pawl 7 cooperating with a fixed stop 8 for locking by end-stroke entanglement. This stop 8 is formed by a prominent peak of plastic material, which forms part of the body 3 and which is obtained by molding with the latter. As will be shown below, with reference to the figures 2 to 5 detailing their operation, the entanglement stop 8 cooperates, during the closing of the tilting hat 4, with the elastic pawl 7 to create a hard pitch that corresponds to a maximum tension of this ratchet and, immediately after the step from this hard point, to abruptly release this ratchet 7 against the nose of the stop 8 thus producing a distinctly audible "click" or "click" that then signals the assembler that the self-undressing connection of the thread 6 has been effectively and positively performed with absolute certainty . Figure 2 shows the tilting hat 4 at the beginning of the closing phase. In this state, the elastic ratchet 7 rests, without tension, on the base of the convex ramp 81 which is formed in the front part of the stop 8 to receive and progressively push back this elastic ratchet 7. The elasticity of the latter is due to the fact that it is carried by the free end of a tongue 71 of plastic material whose other end is integral with the tilting hat 4. In this state, the pusher blade 62 (figure 1) has not yet begun its action of trapping the thread 6 in its self-descending groove receiving metal contact 1. Continuing, according to figure 3, the manual closing action of the tilting hat 4, the ratchet 7 is pushed backwards by the stop 8, along the convex ramp 81 of the latter. The elastic tab 71 is then bent as shown and is therefore subject to a strong elastic counter tension. In this state, the pusher blade 62 begins to catch the thread 6 in its self-emptying slot receiving the contact 1 and therefore to strip and connect the thread 6. At the end of the ramp 81, there is then passage of a hard point 82, and then, according to figure 4, very abrupt release of the elastic tongue 71 and blocking, by entanglement 7-8 of the tilting hat 4. During this last phase, the pusher blade 62 fully and positively traps the self-undressing connection of the yarn. The abrupt release of the tongue 71 after the passage of the hard point 82-7 entails the very abrupt shock of this tongue against the front face, ie against the nose, of the stop 8. The sharp shock of these two hard bodies causes then a clearly audible click or "click" that, according to the result provided by the present invention, signals to the assembler that the self-undressing connection of the wire 6 has been positively, and therefore with total certainty, effected. It should be noted, as can clearly be seen in FIG. 5, that the positive blocking of blanket 4 allows the yarn 6 to be kept well in its connection position, thanks in particular to a short vertical slot 9 for reception and maintenance of the thread 6. which is provided, in front of each self-undressing slot, in the body 3, as well as a short conjugate rib 10 that is provided, on the inside face of the tilting hat 4, to then come to close this slot 9 performing the mission of a cover for the latter. Typically, the crack thus produced at the closure of the hat 4 is of intensity at least equal to 45 Decibel ios A. As is evident, the invention is not limited to the exemplary embodiment just described. This is the case, for example, as it also applies to sockets which, similarly to that of EP-A-0,585,179 already mentioned, have several closing pushers instead of just one. It also applies to devices that are provided with a non-tilting connecting thruster and are closed, for example, by translation and not by rotation. It is applied in a general way to the connection industry, and therefore not only to the domain of telephone or computer connections, which is not mentioned here except as a preferred but not limiting example.

Claims (2)

1 - . 1 - A method of connection of sheathed threads (6) by trapping, by means of a rotating pusher of the tilting hat type (4), of these threads (6) in receiving self-unloading slits (1, 2), characterized in that it consists of in providing an elastic element (7) that is integral with this rotating pusher (4) and that is tightened during the rotation of this pusher for the application of these threads (6) in these grooves (1, 2) and then because it is released Suddenly, at the end of the stroke of this pusher, to strike abruptly against the nose (81) of a hard body (8) which is prominent in relation to the means (3) of maintenance of the metal contacts with self-undone clefts (1). , 2) and that is solidary of this means (3), so that a clearly audible click is obtained that signals to the assembler that the self-undressing connection has been positively performed and whose sound intensity is at least equal to 45 Decibels A.

2 - The method according to claim 1, characterized in that said rotating pusher (4) carries an elastic tongue (71) having a free end which in turn carries a ratchet (7) of end of stroke locking by entanglement on a stop fixed (8), which is integral with the fixed body (3) which contains and maintains the metallic contacts of self-undressing slits (1, 2), and which forms a clearly prominent projection in relation to this fixed body (3), thus cooperating this stopper (8) and this pawl (7) to create a hard point of passage (82) which corresponds to a maximum tension of the tongue (71), and to release abruptly, in blocking position, this pawl ( 7) against the peak of the projection formed by this stop (8), the nose (81) of this peak then receiving a sudden shock that produces said clearly audible click, the characteristics of the tongue (71) being determined from its trinq uete (7), and of the eg prom (8), so that this click is of sound intensity at least equal to 45 Decibels A.