FR2568418A1 - MULTIPOLAR ELECTRICAL CONNECTOR. - Google Patents

Abstract

1. A multipole electric connector comprising a front cap (1) in which a cable clamp (2) is mounted and a rear cap (3) cooperating with the front cap and with the cable clamp, characterized in that the cable clamp (2) is provided with at least two fins (13) connected at their rear end by at least one resilient means for centering the cable and each having a face (14) for clamping said cable parallel to the central axis of the cable clamp, at least one flat surface (15) for securing against rotation and translational sliding cooperating with the rear part of the front cap (1) and at least one securing means on said front cap formed at the front end of said fins.

Description

2568418

  The present invention relates to a multipolar electrical connector

  re. The existing multipole electrical connectors are generally made of two parts: a front cover and

has a back cover.

  The front cover is intended to receive a socket or male socket and the rear cover is a cable guide and a

  contact protection for the user.

  Between these two covers is a cable clamp that prevents rupturing

  4o re of the connection of the son éleotriques at the level of the weld to

  the back of the plugs under a pulling force.

  Many disadvantages have been revealed on the connection of the two

hoods and cable gland.

  Indeed, the fastening of the covers between them is often done by Ci via the cable clamp which has a thread on which is screwed the rear cover thus exerting traction on the

  said cable clamp for pinching the cable.

  But screwing the back cover often causes rotation of the cable clamp and therefore, the twisting of the cable causing the

and breaking the connection wires.

  On the other hand, during dismantling, since the cable gland is not

  tied to the hoods, falls off and is very often lost.

  Another disadvantage appeared on the connectors, hitherto made, that of the attachment of the plug holders on the front cover. Indeed, the design of said hoods before is such that these

  can only receive one type of record carrier.

  A hood is provided for receiving a plug holder, a

  other to receive a socket support.

    This drawback entails a complexity in the manufacture of

  connectors and many risks of errors.

  In addition, the mounting of the socket support often causes breakage of the cable connections on the plugs, because it is often necessary to tilt the support relative to the cover and therefore to

Go bend the wires.

  The present invention aims to obviate all these drawbacks.

  by having a multipolar connector avoiding the twisting of the cable by the cable clamp, able to receive the male and female plug holders and proposing a simple assembly of these

-7 supports.

  For this purpose, the multipolar connector according to the invention comprises a front cover in which is mounted a cable clamp and a cover

  rear part cooperating with the front cover and the cable gland,

  in that the cable gland is provided with at least two wings O connected at their rear end by an elastic cable centering means each having a locking surface in rotation and sliding in translation cooperating with the rear portion of the front cover and, at least one hooking means on the said hood

  before formed at the front end of said wings.

  According to another characteristic of the connector according to the invention, the front cover is provided with fixing means able to receive either

3 2568418

  a male plug holder and the corresponding female connector, ie a socket holder having at least one member

  hanging with the corresponding male connector.

  According to yet another characteristic of the connector according to

  vention, the socket support is provided with at least one resilient latching member movable in longitudinal translation intended to cooperate with, on the one hand, the fastening means of the front cover and

  on the other hand, with the means for fixing a front cover of a con

male.

  Other advantages and features of the invention will become apparent

  in the description of an embodiment and with reference to the

  attached drawings given by way of non-limiting example and in

  which: - Figure 1 is a side view in half section of a connector

J4 female according to the invention.

  - Figure 2 is a side view in half section of a male connector. FIG. 3 is a perspective view of the following cable greenhouse

  a first embodiment of the connector according to the invention.

  FIG. 4 is a perspective view of the cable gland according to a

another embodiment.

  As shown in FIGS. 1 and 2, the multi-electrical connector

  polar according to the invention comprises a front cover 1 in which is disposed a cable clamp 2 and a rear cover 3 cooperating with the

  IJ says hood before and with the said greenhouse cable.

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  The front cover has a connection with a cylindrical cor-

  than tubular dot. d.-: Its s :::? i3 arr? i-re of at least one element of the

  means of assembly with the rear cover 3.

  The said rear cover is preferably formed by a tubular cylindroconic body and comprises in its front part at least

  an element of the assembly means with the front cover 1. -

  According to a preferred embodiment, the assembly means

  covers 1 and 3 is constituted by a screw-nut system.

  The rear part of the front cover 1 is provided with an external thread 4

  at the end of a step 5.

  The rear cover 3 preferably comprises the entire length of

  no cylindrical portion before 6 cooperating internal thread 7

  with the outer thread 4 of the front cover 1.

  Advantageously, the front hoods 1 and rear 3 are provided on a 4 <part of their outer surface of notches 8 gripping arranged axially said hoods to facilitate assembly thereof. At the end of the rear cylindrical portion 9 of the rear cover 3 and perpendicularly thereto is a ledge 10 oriented

towards the axis of said hood.

  This flange 10 is intended to block a cable guide he flexible endowed

  a bleeding in which lodges the said edge.

  The inside diameter of the front portion 6 of the rear cover 3 is

  larger than the inside diameter of the cylindrical part

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  9. The inner surface of said back cover has a frustoconical surface of revolution 12 connecting the cylindrical parts before 6

  and back 9 and whose role will be explained further.

  j The rear cover 3 cooperates with the front cover 1 and with the greenhouse

cable 2.

  As shown in FIG. 3 and according to a preferred embodiment, the cable gland 2 is provided with at least two wings 13 connected at their rear end by at least one elastic centering means of the cable, each having a clamping face 14 of the said cable, parallel to the central axis of the cable clamp, at least one locking surface 15 rotating and sliding in translation cooperating with the rear portion of the front cover 1 and at least one attachment means on said front cover provided on the end

Ar before said wings.

  According to a preferred embodiment of the connector according to the invention, the cable clamp 2 is provided with two wings 13 whose

  clamp faces 14 are spaced and parallel.

  Each clamping face 14 is provided with a recess 16 in portion of Co cylinder running along the entire length of said face to offer

  a larger clamping area on the cable.

  The rear end of each wing 13 consists of a base 17

in cylinder portion.

  The bases 17 of said wings are preferably contained in a same cylinder so that the cable clamp 2 has

  its rear part a circular cross section.

6 2568418

  Forward of each base 17 is provided a wall 18 on which are formed the plane clamping face 14, the locking surface 15 in rotation and sliding and at least one attachment means to

front cover.

  The face 14 of each wall 18 is an extension of the envelope

  17 and therefore covers the entire height of the wing 13.

  The rotational locking and sliding surface is provided at

  the opposite of the clamping wall 14.

  Said surface 15 is preferably of cross section rec-

  A tangular dimming of the back of the cable clamp 2 forward.

  The surface 15 for locking in rotation and sliding is therefore plane

  and inclined towards the front of the cable clamp 2.

  The sliding and rotational locking surfaces are symmetrically

  relative to a median plane parallel to the clamping walls 14 and their convergence line is located in front of the cable clamp 2. The width of the walls 18 is substantially less than that of the

  bases 17 and their thickness covers the entire base.

  At the front end of each wall 18 is preferably provided a

  attachment means on the front cover 1 of the connector according to the invention.

  tion. This attachment means is formed by a shoulder 19 formed on the

  surface 15 and perpendicular to the clamping face 14.

  Preferably, this shoulder has a shape in a portion of a circle

  concentric to the recess 16 of the clamping faces 14.

  The wings 13 are connected at their rear end by a means

elastic centering cable.

  This centering means is in a preferred form of embodiment

  sation consisting of a ring 13 A connecting said wings at their base 17 and inner diameter equal to the diameter

  of the cylinder forming the recesses 16 of the faces 14.

  J This annulus 13 A is resilient to allow the approach of the front ends of the walls 18 under the effect of a radial force to said cable clamp and their return to the initial position when

this force ceases.

  The cable clamp 2 thus formed is placed in cooperation with the

front cover 1.

  The rear end of the front cover 1 of the connector according to the invention is provided with a polygonal orifice 20 formed axially at said hood

  before and in a rim 21 and whose section is a trunk of pyra-

  the top of which is on the axis of the front bonnet 1 and at the

q. <inside of it.

  According to a preferred embodiment, the orifice 20 presents

  number of sides equal to or greater than two of the number of

the 13 of the greenhouse cable 2.

  The said cable clamp according to the embodiment described above is

  With two wings 13, the orifice 20 of the front cover 1 is therefore preferred.

  basically equipped with four sides.

  The cable clamp 2 is placed in said hole 20 by

  of these wings 13 so that the shoulders 19 come into

  support behind the rim 21 forming the said orifice.

  2J 'The cable clamp 2 is thus blocked on the front cover 1 by its

Shoulders 19.

  Each surface 15 'ota = ono and sliding is pressed against a face 22 of the orifice 20 having substantially

  the same inclination as the said surfaces.

  The surfaces 15 being flat and of width substantially equal to the width of one side of the orifice 20, the cable clamp 2 is therefore

  locked in rotation relative to its median longitudinal axis.

  The rear cover 3 is then mounted on the front cover 1 and the dia-

  outside meter of the bases 17 of the greenhouse cable is based on

  the frustoconical surface of revolution 12 of said back cover.

  When the rear cover 3 is tightened on the front cover 1,

  re cable 2 being blocked in a direction of translation by the frustoconical surface 12 is pushed forward in the said front cover and therefore

in the orifice 20 thereof.

  The sliding surfaces being inclined as well as the faces 22

  of the orifice 20, the front ends of the cable gland are

  under the effect of a radial component created by the contact with at least one face 22 and tighten the cable between them

  while pushing it forward according to their direction of translation.

  This slight push forward of the cable under the effect of the

  &. translation of the cable clamp helps to prevent breakage of

  xions of the cable wires of the plugs.

  In addition, the locking in rotation of the cable clamp 2 in the orifice 20

avoid twisting the wires.

  According to a second embodiment of the connector according to

  In this case, the cable clamp 2 as shown in FIG.

  at least one additional clamping means provided perpendicularly

  13 and in the rear part of said cable gland.

  This additional clamping means is formed by a slit 23 preferably of triangular shape defining two inclined symmetrical walls whose plane of symmetry is perpendicular to the plane

  median parallel to the clamping wall 14 of each wing 13.

  The large base of the triangle defining the slot 13 is in the same

  I plan that the back of the bases 17.

  The connection between the wings each having a slot 23 is made

  sated by elastic spacers 24 also allowing a cen-

  A trage of the cable in the greenhouse cable 2.

  The said cable clamp according to this second embodiment is

  disposed on the front cover 1 in the same manner as before.

  The mounting of the rear cover 3 entails the tightening of the cable by the walls 14 but also a tightening of the cable on the rear part of the cable clamp 14 by a tightening of the slot 23 due to the contact of the bases 17 on the frustoconical surface of revolution 12, the translation of the rear cover 3 with respect to the cable clamp 2 and the

  locking in rotation of said cable clamp on the front cover.

  The cable greenhouse 2 according to these two embodiments is made

  eO is a semi-rigid material such as polypropylene and is obtained

for example by molding.

  The cable clamp 2 according to this second embodiment allows

  double tightening of the cable while favoring a slight transla-

  cable forward to prevent breakage of the connections

  Have some wires on the plugs of the connector.

10 2568418 i0

  According to a preferred form, the multipole electrical connector

  according to the invention is provided on a front cover 1 of fastening means adapted to receive either a support 24 of male plugs and the corresponding female connector, or a support 25 plugs

  females having at least one hooking means with the connector

corresponding male driver.

  As shown in FIGS. 1 and 2, the front cover i as well for a female connector (FIG. 1) as a male connector (FIG. 2)

  is preferably provided on the same longitudinal line of a

  26 preferably opening circular and a preferably polygonal opening opening 27 disposed between the front end

  of the cover 1 and the circular orifice 26.

  Behind the circular hole 26 and in the inner surface

  cylindrical front cover 1 is formed a shoulder 28.

  / 7J As shown in FIG. 2, the connector according to the invention is

  equipped with a support 24 of plugs.

  The support is preferably cylindrical and is provided with

  surface perpendicular to its axis of a tapping 29.

  The outside diameter of the support 24 is slightly less than the diameter

  eV meter inside the front cover 1.

  The distance between the axis of said tapping and the rear face of the

  port is equal to the distance between the axis of the circular orifice 26

  the front cover 1 and the shoulder 28.

  The support 24 is thus placed in abutment against the shoulder 28 and 2568418 the orifice 26 and the tapping 29 are arranged coaxially in order to

  for example to receive a locking screw.

  It goes without saying that the support 24 is disposed in the front cover 1

  only when the cable connections have been made

  on the rear end of the plugs.

  Preferably, the male plugs are provided with a collar 31 on which a knurling is performed so that the pins can not

  not to move in the support thus avoiding the rupture of the con-

  The said plugs advantageously comprise on their

  surface a gold plating to ensure better contact.

  It goes without saying that the support 24 of male plugs can receive a groove or a projection to ensure its positioning in the hood

  before 1 by cooperation with, respectively, a projection or a rationale

  nure (not shown) formed in said hood.

  As represented in FIG. 1, the connector according to the invention

  has a socket 25 support.

  According to a preferred embodiment of the connector, the

  socket support is provided with at least one actuator

  mobile elastic recoil in longitudinal translation for o cooperate on the one hand with the fastening means of the front cover 1 on which said support is mounted and on the other hand with the means for fixing a front cover 1 of a connector according to the invention

a support of male records.

  This fastening member is preferably constituted by a

  elastic blade 32 arranged in a groove 33 formed in a pat-

  34 secured to the support 25 of female sockets.

  The said support present the cyme heart c) lndre of light diameter-

  less than the inside diameter of the front cover 1 of the connector and is provided with a collar 35 intended to be supported by its

  rear face against the front end of the hood 1.

  Behind this flange 35 is formed the tab 34 carrying the

blade 32.

  This tab has a cross section in a cylinder portion

  whose diameter is the same as the front part of the support 25.

  Under this tab 34 are located connection end plugs.

  i In the leg 34, in the collar and in front of it is

  arranged groove 33 in which is disposed the blade 32.

  On the back of the tab 34 perpendicular to the groove

  re 33 is made an opening 36.

  The length of the tab 34 from the back side of the glue

  A. rette 35 is equal to the distance between the front end of the hood 1

and the shoulder 28.

  So that the axis of the opening 36 is aligned with the axis of the orifice 26 of the cover 1, it is therefore necessary that the distance between the axis of said opening and the end of the tab 34 or the back side

  flange 35 is equal to the distance separating the axis from the

  26, respectively between the shoulder 28 or the front end

hood 1.

  On the rear end of the leg 34 is provided in the extension

  from the bottom of groove 33 a slot 37.

  In said groove is disposed the metal blade 32.

13 2568418

  Said blade has a pusher 38 perpendicular to the front of the blade, a hook 39 formed at its front end and is provided with a

tapping 40.

  The pusher 38 is intended to penetrate into the polygonal orifice 27 and

  the tapping 40 is intended to be arranged coaxially with the ori-

this 26 of the hood 1.

  The distance between the rear face of the pusher -38 and the axis of the tarau-

  40 is equal to the distance between the rear edge of the orifice

27 and the axis of the orifice 26.

  yAv The pusher 38 is formed either by folding the blade in a pusher or by a cube-shaped insert provided on its face.

superior of crenellations.

  The hook 39 is formed on the front end of the blade 32 which is

* advantageously perpendicular to the pusher 38.

  / The said blade 32 can be actuated in translation in the groove 33, which is permitted by the passage of its rear part in the slot 37 to facilitate the establishment of the support 25 of female sockets on the connector according to the invention avoiding the break

  connections on said cards previously made.

  ë? For this purpose, the blade 32 is disposed in the groove 33 so

  that the pusher 38 is in abutment at the bottom of said groove.

  This makes it possible to engage the pusher 38 in the polygonal orifice 27 without the need to tilt the tab 34 relative to the

  hood 1, thus avoiding the risk of connection breakage.

  Jf When the pusher 38 is in position in the orifice 27, and therefore

14 2568418

  when the blade 32 is immobilized in translation relative to the hood 1, the support 25 of the sockets is pushed until the rear end of the lug 34 comes into abutment with the shoulder 28, and / or that the face back of the flange 35 comes to a stop

  J on the front end of the hood 1.

  The tapping 40, the opening 36 and the orifice 26 when the support is in abutment, are aligned and receive for example the locking screw 30. The connection of a female connector with a male connector is / c performed by depressing the socket 25 of the sockets in the front cover 1 of the male connector until the hook 39 is

  housed in the polygonal orifice 27 of said male connector.

  It goes without saying that the positions of the sockets with respect to the tab 34 and male plugs with respect to the orifice 29 are the

Af same.

  Preferably, the distance separating the end of the hook 39 and the front face of the flange 35 is greater than or equal to the

  distance between the leading edge of the polygonal orifice 27 and the end

Front bezel front 1.

  In order to achieve better contact between female and male plugs, the so-called female plugs may have a gold plating. Disconnection of the connectors is done by pressing the

  pusher 38 opening out of the orifice 27.

  The rear end of the blade 32 is preferably slightly

  in such a way that, when the blocking screw 30 plate the rear portion of said blade on the bottom of the groove 33, the pusher 38

  is detached from the bottom of said groove.

  f The hook 39 being made perpendicularly to the pusher 3,

  it is dislodged from the hole 27 of the male connector under the ef-

  the pressure exerted on the said pusher. -

  The front and rear covers 3 are preferably made by

  and are made of an easily molded light alloy such as for example the "zamak" or, although a plastic material such

than the "PVC".

  The connector according to the invention makes it possible to obtain an effective clamping

  this of the cable without risk of deterioration of wire connections

  on the cards, is of simple design and therefore inexpensive.

  It goes without saying that the present invention can receive any modification-

  and any variant in the field of technical equivalents

  without departing from the scope of this patent.

  RU / Multipole electrical connector comprising a front cover (1) in which is mounted a cable gland (2) and a rear cover (3) cooperating with the front cover and with the cable gland, characterized in that the cable gland (2) is provided with at least two wings (13) connected at their rear end by at least one elastic means for centering the cable and each having a clamping face (14) of said cable parallel to the central axis of the cable.

  cable clamp, at least one planar blocking surface (15)

  translation and sliding in translation cooperating with the rear part of the front cover (1) and at least one attachment means on

  said front cover formed on the front end of said wings.

  R2 / connector according to claim 1 characterized in that the

  surfaces (15) for locking in rotation and sliding in trans-

  are converging into a straight line or a point

  front of the greenhouse cable on the median plane of said cable clamp.

  R3 / connector according to claim 1 characterized in that the front cover (1) is provided on its rear end with a hole (20) polygonal formed axially to said front cover and whose cross section is a truncated pyramid whose top is

  on the axis of the front cover and inside of it.

  R4 / connector according to claims 1 and 3 characterized in that

  the polygonal orifice (20) has a number of faces (22) equal to or multiple of at least two of the number of wings (13) of the greenhouse

cable (2).

  F5 / Connector according to claims 1, 2, 3 and 4 characterized in

17 2568418

  the flat surfaces (15) for locking and translational sliding of the cable clamp (2) are each supported on a

face (22) of the polygonal orifice.

  R6 / connector according to claim 1 characterized in that the means for hooking the cable clamp on the front cover (1) are

  constituted by shoulders (19) each formed on the end

  before a surface (15) and perpendicular to the face

clamping device (14).

  R7 / connector according to claim i characterized in that the cable clamp comprises on the rear end of each wing (13) a slot (23) defining symmetrical walls whose plane of symmetry is perpendicular to a plane parallel to the

  clamping face (14) so as to constitute a second place of clamping

cable age.

  / I R8 / connector according to claim 1 characterized in that the rear cover (3) has a frustoconical inner surface

  (12) cooperating with the rear end of the cable clamp (2).

  R9 / connector according to claim 1 characterized in that it is

  equipped on its front cover (1) with fastening means capable of receiving

  Co see either a support (24) of plugs and the corresponding female connector, or a support (25) of sockets with at least one hooking means with the connector

corresponding male.

  R10 / connector according to claim 1 characterized in that the fastening means of the front cover are constituted by an orifice

18 2568418

  circular member (26) receiving a locking screw (30) cooperating with a tapping (29) or a perforation (36) respectively of a male plug holder or a socket holder and by a polygonal orifice (27) arranged between the front end of the

  front cover (1) and the circular opening (26).

  Rll / connector according to claim 9 characterized in that the support (25) of the female plugs is provided with at least one member

  movable elastic catch in longitudinal translation of

  adapted to cooperate with on the one hand the fastening means of the front cover (1) on which said support is mounted and on the other hand with the fastening means of the front cover (1) of a connector

  according to the invention provided with a support (24) of plugs.

  R12 / Connector according to claims 9, 10 and 11 characterized in

  the attachment member of the socket support (25) is constituted by an elastic blade (32) provided with a pusher (38) intended to fit in the polygonal opening (27) of the front cover (1). ) on which said support is mounted, a tapping (40) coaxial with the orifice (26) of saidcapot before and a hook (39) intended to be disposed in the hole (27) polygonal of a

  connector according to the invention of the male type.

  R13 / Connector according to claims 11 and 12 characterized in that

  that the blade (32) is movable in translation in a groove (33) formed in a lug (34) integral with the support (25) of female sockets and in a slot (37) for passage of said blade to facilitate the setting in place of the support (25) of the sockets on the front cover (1) and the pusher (38) in the orifice (27)

polygonal of said hood.