FR2565424A1 - BREAKABLE AND RELEASABLE CONNECTOR BY PULLING, PULLING OUT OR LATERAL SHOCK - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS A BREAKABLE CONNECTOR, CONSISTING OF TWO HALF CONNECTORS INCLUDING ONE OF THE FIXED CONTACTS 2, THE OTHER OF THE MOBILE CONTACTS 11 AND SOLIDARIZABLE BY A 50-150 LOCKING SYSTEM, SO THAT THE FIXED CONTACTS ARE ASSOCIATED WITH MOBILE CONTACTS WITH CERTAIN CONTACT PRESSURE. THE DEVICE INCLUDES MEANS 101-131 TO ENSURE, DURING THE SOLIDARIZATION OF EACH CONNECTOR, AN AUTOMATIC POSITIONING OF FIXED CONTACTS IN FRONT OF MOBILE CONTACTS AFTER ALL THE MOBILE CONTACTS ARE SUBJECT TO A ROTATION RELATIVE TO THE ENTIRE CONTACTS FIXED, THIS ROTATION PROVIDING SELF-CLEANING OF CONTACT SURFACES. THE TENONMORTAISE 101-131 ASSEMBLY ALSO PROVIDES THE FUNCTION OF A SELF-DETECTION DEVICE.

Description

1. The present invention relates to a breakable or disconnectable connector

by simple tensile force,

  axial or lateral. This type of connector can be used

  se in the transmission of audio-phonic signals.

  Known connectors are known to remain

  rusty and therefore not breakable.

  On the other hand, so-called breakable connectors are also known, in which the locking and connection functions are provided by the same element. However, o10 in these connectors the tensile force to disconnect

  the contacts is greater than the contact force.

  The present invention relates to a connec-

  breakable tor in which the disconnection effort is

  almost independent of the pressure of the contacts and which

  re self-cleaning of contacts during connection of

different contacts.

  Another object of the present invention is a

connector which is self-centering.

  A third object of the present invention is

  2C a connector having polarizing means.

  2. A fourth object of the present invention is

to obtain a waterproof connector.

  A final object of the present invention is to obtain a connector which is simple and economical to assemble. According to the invention, the first object is obtained by the fact that, the breakable and releasable connector by simple pulling, comprises in a cylindrical housing: that open, a set of regularly fixed contacts

  distributed along a circumference inscribed in the bowl

  tier and of the same axis of symmetry, an elastic sleeve projecting from the shoemaker and provided with a circular ring

  cooperating by snap-fastening with a circular groove

  seen in a second cylindrical housing, in which,

  is mounted a second set of elastic contact, mobi-

  the, in the snap direction and evenly distributed over a circumference, so as to fall opposite

  fixed contacts, when the two boxes are snapped on

  tees and means for prepositioning the con-

  fixed tacts in relation to mobile contacts, with a certain angular movement when these come into contact for the first time and ensuring rotation

  of all mobile contacts in relation to the whole

  ble fixed contacts, when the snap ends, to bring the two boxes in contact, so that a given fixed contact is always in cooperation

with the same mobile contact.

  The second object of the present invention is obtained by the fact that the connector comprises a sleeve

  elastic having in front of the circular rod, a lip

  glass of conical shape, the outer edge of which is directed

  towards the axis of symmetry of the connector.

  The third object of the present invention is

  obtained by the fact that, the position of the contacts is

  finished with respect to a tenon and a mortise and that 3. the tenon and the mortise are off-center with respect to

  the longitudinal axis of symmetry of the connector.

  The fourth object of the invention is obtained by the fact that, the distance separating the top of the ionc from the shoemaker associated with the sleeve, is less than the

  distance from the bottom of the circular groove to the edge of the bot-

  tier associated with this groove and greater than the distance separating the

  edge of the throat of the edge of the housing.

  Finally, the last object is obtained by the fact that the contact support assemblies are mounted in their respective casings, bearing against shoulders

  respective internal, provided in each case and

  be respective elastic rings housed in the grooves

  respective gages practiced in the respective housings

tifs.

  Other features and benefits of the

  present invention will appear more clearly on reading

  ture of the description below, made with reference

  in the accompanying drawings in which: FIG. 1 represents an overall sectional view of the two connected half-connectors; Figure 2 is a partial sectional view of

  the central part of the connector in the auto phase

  centering; Figure 3 is a sectional view of the connector when the contacts are established by highlighting the residual stroke; Figure 4 is a top view showing the angular movement of the tenon 101 in the mortise 131 and the angular displacement of a movable contact 11 in front of the fixed contact 2, associated in the two cases of figures which may occur lla and llb; and FIG. 5 is a sectional view of the central part of the connector during unlocking following

a side impact.

  4. Figure 1 shows a sectional view of the connector couple to ensure the connection between

  two cables A and B comprising a plurality of conduc-

  aO, al, an, bO, bl, bn. The connector consists of a movable contact connector and a fixed contact connector. The connector with fixed contact consists of a housing 4, metallic and of cylindrical shape surrounding a cylindrical central insulator 1; of insulating material in the mass of which the fixed contacts 2 are taken. These contacts are distributed regularly along a circumference and

  there are as many fixed contacts as there are conductors

  attached to the cable B. The central insulating body 1 is mounted against a shoulder 40 in the case 4 and immobilized by an elastic ring 7 which is received in a groove 42 of the housing 4. The central body 1 has projecting, relative to the longitudinal axis of the connector,

  a tenon of triangular section 101. A housing canceled

  re formed between the outer part of the insulation cylinder

  central and an internal bore of the shoemaker 4, allows

  pick an elastic sleeve 5 against a shoulder 41 of the

  shoemaker 4. This elastic sleeve 5 is immobilized in displacement

  longitudinal cementing by an elastic ring 6, which is housed in a groove 100 formed on the surface of the

  cylindrical central body 1. The elastic sleeve 5 comprises

  te a cylindrical part protruding from the junction plane

  of the connector housing and extended by an annular ring

  the area 50 formed on its external surface. The sleeve is ter-

  finally mine by a conical portion whose outer lips

  nes 51 are directed towards the axis of symmetry of the connector.

  Each of the fixed contacts 2 is connected to a conductor bl,

  b2, bn. The conductor bo is also connected by a

  this conductive metal 21 to the ground of the housing 4. A part 3 partially embedded in the mass of the insulating body 1, makes it possible to receive the sheath B of the multi-strand cable and to secure by means of links 30, 31 the cable with the 5.

  room 3 and therefore with the central insulation of the con-

  fixed tacts 1. An external body 8, supports a seal 9, making it possible to seal with the

  conductor sheath. This body 8 is screwed onto a threada-

  ge 43 practiced outside the shoemaker 4. A lob seal ensures contact of the part 21 with the body of the housing 4 and provides sealing between housing 20 and

body 15.

  The connector of the movable contacts is

  killed by an external casing 15, receiving the central insulator

  13 movable contacts, consisting of a piece of material

  insulating line. This central insulator 13 includes housings

  cylindrical elements 130 in which can slide

  movable contacts 11 with spherical head. The set of con-

  mobile tacts is regularly distributed along a

  circumference of the same axis of symmetry as the circumference-

  this bearing the fixed contacts. The end of the cylindrical housings 130 is closed by an annular ring 14 in

  insulating material. This ring 14 regularly includes

  parts at its periphery of the contact plugs 12 to which are connected, at each of one of the ends, the conducting wires aO, al, an, of the cable A, and the other ends of which penetrate into the elastic socket of form

  semi-cylindrical 110, movable contacts 11. These dou-

  the elastic bands 110 tighten the plugs 12 so as to establish a sliding contact. Each of the movable contacts thus formed is permanently biased in its most advanced position towards the outside of the connector by helical springs 16, arranged in each housing,

  taking support on the one hand on the shoulders 111 of the

  mobile tacts and secondly on shoulders 120 of

  sheets 12. In this way, the coil springs 16 con-

  also tribute to conductioni. All of the insulation

  central 13 and the ring 14, is immobilized against a shoulder

  Lement 151 of the external housing 15 and, on the other hand by a 6. elastic ring 18, housed in a circular groove 152 of the external housing 15. A groove 153 formed in the

  external housing 15, accommodates a water seal

  front face 17, comprising openings 170 regularly distributed around its periphery, openings which are housed in grooves 112 formed on the

  movable contacts 11. The internal lip 171 of the ring an-

  ring 117 comes, as seen in figure 2,

  lodge in an annular groove 132 made at the periphery

  external rie of the central support 13. One of the plugs 12 is connected by a metal piece 21 to the ground of the housing

  external 15. A part 19, integral with the mass of the iso-

  central lantern 13 allows as for conductor B, so-

  lidarize the outer sheath of conductor A with the body 13

  by means of links 191, 190. Finally, a body 20, cylindrical

  that, comprising at its end a sealing ring 9

  tightening the outer sheath of conductor A, is mounted

  attached to the body of the outer boot 15 by means of the thread

  ge 200. A seal lOa presses the part 21 against the housing 15 and seals between the housing 8

and the body 43.

  Figure 2 shows the connector in the

  phase of alignment of the axes of symmetry of each of the

  nectors, this alignment being achieved by the conical lips

  ques 51 and the first part of the rod 50, when these come to bear against a slight internal chamfer of the

  external housing 15. The central insulation of the connector

  both the movable contacts, has a mortise 131 of triangular section. It can be seen in this figure that the axes of symmetry of the mortise and the tenon are offset by a distance X relative to the axis of symmetry of the connector assembly. Similarly, in this figure we can see that the distance (c) separating the center of

  the groove 150 of the outer edge of the housing 15 is larger

  that the distance (d) separating the front edge of the housing 4 7. from the center of the rod 50 and that this same distance is more

  greater than the distance (e) between the front edge of the bowl

tier 15 of the edge of the groove 150.

  Figure 3 shows the position of the connectors

  When the fixed contacts come into contact with the spherical ends of the movable contacts and the residual travel between the two housings 4 and 15 is no more than 0.5 mm. In this figure, it can also be seen that the angle opening of the mortise and that the angle at the top of the tenon is 50. However, this angle can be

between 30 and 60.

  When the connectors are in the position

  represented by figure 3, there is a certain play in-

  be the tenon and the mortise which allows a certain debate-

  angular ment shown in Figure 4. This angular travel is of the order of 8 as can be seen in Figure 5. This angular travel allows to move, by rotation, each movable contact which must cooperate with each associated fixed contact until 'that the axes

  of symmetry of these contacts are superimposed.

  The low rotation thus imposed on the per-

  self-cleaning of these contacts and by cons

  sequent, better state of contact. In this figure 4, the two cases have been shown, in which a rotation from right to left (in the trigonometric direction) brings the movable contact lla in alignment with the fixed contact 2. The second case which can arise, is the case in which a rotation of the

  left to right, that is, in the direction of travel

  cementing the hands of a watch, brings the movable contact llb opposite the fixed contact 2. In this figure 4, one can also see the angular distribution of the set of

  fixed and mobile contacts. This angular distribution for

  before being deduced from that shown in FIG. 4, by shifting each set of fixed and mobile contacts 8. by an angular value alpha. In this figure, we can also see the axial offset between the axis of symmetry

  of the connector and the axis of symmetry of the post and the mor-

  shut up. Due to the axial offset of the post and the mortise and the fact that the fixed and movable contacts are positioned relative to the longitudinal axis of symmetry

  B, B ', tenon and mortise, the whole tenon / mor-

  silent is a keying device for

  contacts distributed around the periphery, which allows position-

  automatically lead the contacts of each of the connectors, correctly with respect to each other, to a clearance

angular close.

  The angular displacement which is of the order of

  8 in the case of 'Figure 4 and which corresponds to a course-

  is final of 0.5 mm in the case where the mortise and the tenon have an apex angle of 50, can be easily modified according to the radius of the circumference on which is

  distributed all the contacts and depending on the run-

  self-cleaning that we want to get.

  Figure 5 shows the low angular value which

  allows unlocking of the connector and

  Also be that the contact -mobile close to the point of pi-

  vote cooperates with fixed contacts to ensure

  the spacing of each of the connectors.

  During operation, during locking, the

  positive is presented as shown in FIG. 2, and the

  lips begin to center each of the con-

  nectors, one with respect to the other, until the moment when the rod comes to press on the external casing 15, so as to ensure the radial compression of the sleeve 5. When the

  approximation of the half-connectors continues, the tenon

  darkens in the mortise and the contacts approach until the fixed contacts come to rest on the movable contacts, causing a slight withdrawal of 9.

  these. During this phase, the sleeve by its elasticity

  cited ensures centering and alignment of

  axes of symmetry of the connectors. Only a slight debate-

  angular ment is allowed and an angular error is authorized by the constitution of the tenons and mortises which are offset and which, in the position or the stroke of

  0.5 mm remaining to be completed to complete the locking

  plet of each of the connectors, ensures a debate-

  tement of the order of 8 and a positioning error of the fixed contacts, relative to the movable contacts, with a displacement of the order of 0.4 mm. So, in closing

  the connection, the movable contacts are moved angularly

  rement by the action of the tenon on the mortise, so that their axes of symmetry are superimposed with the axes of symmetry of the fixed contacts. This displacement

  angular, associated with the curved surface of one of the

  tacts ensures self-cleaning of each contact.

  The elastic ring 50 being kept constantly in abutment against a surface of the groove 150, ensures a

  tightness in the connector junction plane. From-

  on the other hand, the conical lip 51 advancing with respect to -

  fixed contacts, this also provides a protection function for fixed contacts and the post. Otherwise,

  we can see that the mobile contacts, in their posi-

  most advanced, shown in Figure 2, are re-

  line relative to the plane formed by the front edge of the outer housing 15 and are therefore also protected by this housing. Finally, the seal 17, ensures

  sealing of the movable contacts.

  On the other hand, the pin 101 constitutes with

  mortise 131 a keying system which allows posi-

  operate the contacts correctly, even if you have to operate blind. Indeed, if the position of the tenon is offset, for example by 180, compared to that of the mortise, the front face of the tenon 1010 will come into contact 10. with the face 1310 of the body 13 and when a resistance is felt different from that opposed by the elastic force of the ring 5, it is understood that the connector must be turned until the tenon enters the mortise. At this time, as the contacts of each half-connector are arranged relative to the axes of symmetry of the tenons and mortise in the same way, we will obtain practically

  an alignment of the contacts, to the nearest residual rotation.

  In the unlocking phase, it suffices to exert a lateral force F or a traction on one of the

  connectors, so that the boxes are automatically removed

  as soon as they have been moved relative to the pivot point by a small angular value which is of the order of 4.5. In this case, the mobile contacts

  close to the pivot point which still have their res-

  compressed spells, ensure the end of the detachment

  ment of each of the two connectors, even in the case

  o there is no longer any tensile force exerted on the connector

  tor. The device of the present invention therefore makes it possible to produce a very reliable connector, which is either disconnected by a defined and limited effort. Likewise, the reliability of the contacts is increased by the fact that there are means for ensuring self-cleaning and means for ensuring relative positioning of the connectors.

  brought together. Finally, all contacts are rigorous-

  protected and withdrawn from envelopes

of each of the connectors.

  Other modifications within the reach of man

  are also part of the invention.

11.

Claims (8)

  1 - Connector breakable and releasable by simple pull, comprising in a cylindrical case (4), a set of fixed contacts (2), regularly distributed along a circumference inscribed in the housing and   same axis of symmetry, a radial elastic sleeve (5)   ment projecting from the housing and provided with a circular rod (50), cooperating by snap-fastening with a circular groove (150), provided in a second cylindrical housing (15), in which is mounted a second set of movable contacts (11 ), movable in the latching direction and regularly distributed over a circumference so as to fall opposite the fixed contacts when the two   booters are snapped on and means for pre-   position the fixed contacts relative to the movable contacts, with a certain angular movement when   these come for the first time into contact and assu-   rant a rotation of all movable contacts by   in relation to all of the fixed contacts, when the   tage ends to bring the two shoemakers into contact, so that a given fixed contact is always in cooperation with the same moving contact and in perfect alignment with this movable contact.   2 - Connector according to claim 1, charac-   terized in that the elastic sleeve (5) has a conical lip in front of the circular rod (50),   the outer edge is directed towards the axis of symmetry of the con-   nector. 3 - Connector according to claim 1 or 2, characterized in that the pre-positioning means   consist of a tenon (101) of triangular section   re, cooperating with a mortise (131) and trained respecti-   in each central body (1-13) supporting the   contacts (2-11) and made of insulating material.   4 - Connector according to claim 3, characterized 12. in that the position of the contacts (2-11) is determined relative to the post (101) and the mortise (131) and that the post (101) and the mortise (131) are located offset   radially by a distance X from the axis of symmetry   longitudinal sorting of the connector. - Connector according to claim 4, characterized in that the angle at the top of the stud (101) and the   mortise (131) is between 30 and 60.   6 - Connector according to claim 4, charac-   terified in that the angle at the top of the tenon and the mortise   se and the half-width of the tenon and the mortise are such that a rotation of 8 is possible between these two elements, when a stroke of -0.5 mm remains to be accomplished in the direction   the longitudinal axis of the connector.   7 - Connector according to claim 5 or 6,   characterized in that the apex angle is 50.   8 - Connector according to one of the pre- claims   cédentes, characterized in that the distance (d) separating the top of the rod (50) from the shoemaker (4), associated with the sleeve (5), is slightly less than the distance (c) separating the bottom of the circular groove (150 ) from the edge of the housing (15)   associated with this groove and, greater than the distance (e) se-   paring the edge of the groove (150) from the edge of the boot (15).   9 - Connector according to one of claims   previous, characterized in that the movable contacts are provided with sealing means (17) and are slidably mounted in cylindrical housings (130), provided   in the central body (13) of insulating material, these housings   elements being closed by an annular ring (14) supporting   contact fingers (12) which are connected to an end   tee at one end to the lead wire ai, an, of cable A   and by the other end to the elastic and semi-sleeves   cylindrical (110) movable contacts (11).   - Connector according to claim 9, charac-   terized in that each movable contact is permanently 13. biased in the advanced position by a helical spring   (16) placed in each cylindrical housing (130) -and pre-   bearing on the one hand on a shoulder (120) of the contact fingers and on the other hand, on a second shoulder (111) of the movable contact (11).   11il - Connector according to one of claims   previous, characterized in that the elastic sleeve (5) is mounted in an annular housing provided between the external housing (4) and the insulating body (1), supporting the fixed contacts (2), so as to bear against a internal shoulder (41) of the shoemaker (4) and a ring   elastic (6), housed in an external groove (100) practi- quée in the insulating body (1).   12 - Connector according to one of claims   previous, characterized in that it comprises means (3-19) making it possible to make the cables A, B integral with the central bodies (1-13) supporting the contacts (2-11)   and means (9-10-8-20) for ensuring the tightness   tee between the boxes (4-15) and the sheaths of cables A, B.