FR2742266A3 - Releasable electric plug-and-socket connector with locking lever - Google Patents

Abstract

The plug (11) has a locking lever (13) pivotable about a first bearing (21) and able to enter into guides (32) of the socket (12) with the aid of a second bearing (22). Both bearings are formed integrally on the lever.The first bearing has a bayonet-type connecting element (24) parallel to the plane of pivoting. This can be pushed into a recess (26) in a wall (16) of the plug at right angles to the plane. To lock the plug and socket together, this element is then rotated parallel to the plane into its operative position

Description

State of the art: The invention relates to a connection device

  removable electrical system comprising a connector receiving ma-

  swivel nière a locking lever by means of first guide elements, and a socket with guide tracks receiving the locking lever with the second

  guide elements and which thanks to the second guide elements

  dage and to the guideways, during the tilting of the locking lever ensures the relative displacement of the connector and the socket and allows their locking,

  According to document DE-34 07 725 Al, it is already

  naked in the case of a removable electrical connection device

  ble, to apply the insertion and extraction forces of the connector with respect to the other connector part using a locking lever pivotally mounted on the connector and which is supported when it pivots , against guideways

on the other side of the connector.

  The locking lever is a stirrup having

  essentially a U shape with knee-shaped branches. Near the free end of each branch, a stud projecting from the inner face of the branch is fixed and which is pivotally articulated in a

  drilling the connector housing. In the knee area of each

  that branch, at its outer side, is fixed a gou-

  guide rod coming to take in the guide path of the connector housing; the guide pin and the path

  associated guidance have conical directional shapes

opposing tions.

  When carrying out such a locking lever, on the one hand the base body of the lever is produced in the form

  of a piece of folded sheet metal and on the other hand the studs or

  guide pins are produced separately in the form of parts

  these tours. The studs and guide studs bear on

  the front faces associated with the branches each time a gou-

  retaining pin housed in corresponding holes in the branches

  and fixed to them by welds. For mounting the locking lever on the connector, the studs are engaged through the holes in the longitudinal walls of the connector

  and we mat the inner side of the connector to form a col-

  lerette. The manufacture and installation of the

  locking on the connector are unfortunately very cost-

  teuse (s) because of the manufacturing and assembly process. Advantages of the invention: The object of the present invention is to remedy these

  drawbacks and to this end concerns a device for

  connection of the type defined above, characterized in that the elements

  guide elements are made in one piece with the locking lever, at least the first guide element has at its free end, at least one stamped part

  parallel to the pivot plane of the locking lever, par-

  forged tie made as a snap-in connection element and which, in an installation position, is engaged through a cutout of relatively large dimensions, with play,

  in the wall of the connector, transverse to the pivot axis

  the locking lever to engage and to turn

  parallel to the pivot axis of the locking lever

  lage by forming a bayonet connection with the wall and locking in an operating position, the connector

and its taking.

  The removable electrical connection device is

  lon the invention offers the advantage of avoiding satisfactorily

  the drawbacks outlined above.

  For this, the locking lever is made in one piece with all its components, and a die

  is carried out each time at the level of the first guide elements

  dage, in the form of a bayonet connection element. This allows

  automatic and inexpensive manufacturing of the lever

  rusting as well as easy fixing by means of a movement

  combined insertion and rotation of the

locking on the connector.

  According to other advantageous features of the invention:

  - the locking lever is a sheet metal part and the

  guide elements are end pieces of the lever parts

  rust in the pivot plane and having a

  wall thickness at least approximately equal to the thickness

  wall sor of the other parts of the locking lever,

  - the locking lever is U-shaped with two branches

  ches parallel to the pivot axis provided, on the one hand, with the second guide elements and, on the other hand, with the first guide elements offset from the second guide elements and

  forming the pivot axis of the locking lever. - the guide elements are elongated in the form of sockets and are provided in opposite directions each time with respect to

  port on the pivoting plane of the locking lever, - each stamped part of each of the first two elements

  guide is formed by a first projection provided parallel

  lement to the pivot axis of the locking lever, - the projecting parts are located on a geometric circle

  and have different angular intervals.

  - A first cut is made in the wall of the connector associated with each guide element, this cut being larger at the foot of the heel than the first guide element with cutouts to pass the projecting parts into an angular position of the lever. lock

  corresponding to the mounting position.

  - the projecting parts come to take behind the parts of the wall in another angular position than the mounting position, - the cavity forms, in the direction of engagement of the first guide elements, a hollow part which forms a fictitious circle constituting the outer limit of the projecting parts and the depth of the recessed part is greater than the thickness of the projecting parts Drawings:

  An embodiment of the invention is shown

  felt in the drawings and will be described below in more detail. Thus: - Figure 1 is a side view of a housing with a locking lever carried by the connector, - Figure 2 is a longitudinal section along line II-II of the device of Figure 1, and - Figure 3 is a side view in the direction

  of arrow III in FIG. 2 of the device.

  Description of the exemplary embodiment:

  According to FIGS. 1 and 2, a device for

  electrical connection comprises a connector 11, a connector socket 12 which is only partially shown, as well as a locking lever 13 forming part of a device for

  fixing connector 11 on socket 12.

  In general, according to document DE 34 07 725

  A1, it is known, and this is not depicted

  cut, to provide on connector 11, a connector part

  body 14 in the form of a plastic box having

  longitudinal walls 16 parallel.

  On a small side of the connector housing 14, a

  surface-mounted hook which, during the meeting of the

  nector 11 and socket 12, comes to take in a fixing part of socket 12, is also in the form of a hook but

  directed in the opposite direction to that of the fixing hook

  tion; the attachment is done in the manner of a joint, if

  although the connector 11 switches to begin closing the connection device with respect to the socket 12. The closure

  The connection itself is made using the locking lever 13. The locking lever 13 in the form of a piece

  sheet bent in U, double branch, has three branches la-

  17 connected on one side by a crosspiece. The branches

  17 which are symmetrical parallel and start from the

  crosspiece, each has a middle part 18 extending

  aged. This continues with a free end zone, to

  the lateral branch 17, in the form of a semi-circular extension 19.

  A first guide element 21 is provided on the extension 19 and, at the end of the central zone 18 adjacent to the shoulder 19, there is a second guide element 22. The 35 guide elements 21, 22 are each produced , at least in their basic form like elongated bodies in the form of

  sockets arranged transversely to the pivot axis of the locking lever 13.

  The first guide element 21 protrudes at its inner side 23, on the side branch 17 facing the opposite side branch 17. The free end of the first guide element 21 as a stamped part is provided as it appears in FIG. 3, with three projecting parts

  24 in the form of sheet metal tabs with a base surface car-

  rée; these tongues are folded back square relative to the remaining part of the first guide element 21, and they are arranged in the direction of the pivot plane of the lever.

  lock to be on a fictitious circle and to be separated

  by different angular intervals.

  To receive the first guide element 21, the longitudinal wall 16 has a cutout 26 of the same shape as the free ends of the first guide element 21 but larger than the insertion clearance; using three cutouts

  27, the protrusions 24 can pass when they occupy

  In a determined angular position, in the lever

rusting 13.

  On the rear side 28 of the longitudinal wall 16 facing this longitudinal wall 16, the cutout 26 is

  enlarged by a cylindrical cavity 29 corresponding to a circle

  geometric key corresponding to the outer limit of the par-

  protruding parts 24. The depth of the hollow part 29 is greater than the thickness of the protruding parts 24, so that after the first guide element 21 has been put in place in the cutout 26 and placed on the side inside 23 of the locking lever 13 against the longitudinal wall 16, the latter is located in the hollow part 29 and does not protrude from the rear side 28 of the longitudinal wall 16.30 The positioning thus described of the first guide element 21 in the cutout 26 is only possible in a certain mounting position of the locking lever 13 for which the protruding parts 24 are opposite the cutouts 27. When leaving the mounting position, to begin and

  close the connection by connection, by toggle

  lement of the locking lever 13, the projecting parts 24

  and the cutouts 27 no longer match so well that the le-

  locking bolt 13 comes behind the projecting parts 24 of the parts of the longitudinal wall 16 which are not adjacent to the enlarged zones of the cutout 26 and can no longer slide transversely to its pivot plane; there is thus a bayonet connection with protection by a connection by form. The second guide element 22 projects from the external side 31 of the lateral branch 17 opposite the internal side 23, transverse to the pivot plane of the

  locking lever 13. It can be inserted into a lock

  guide min 32 formed in a side wall 33 of the socket

  12. A pivoting movement of the locking lever 13 au-

  turn of the first guide elements 21 to close the container

  connection, so that the second guide elements 22 are supported in the guide tracks 32 and thus pull the connector 11 in the socket 12. The forces which then occur, transverse to the pivot plane, are reduced by the parts projecting 24 or by the arrival of the lateral branch 17 against the lateral walls 16, thus guaranteeing the position of the second guide element 22 in the guide path 32.20 A locking lever 13 has thus been produced for a removable connection ; thanks to its shape in one

  piece, this lever is achievable inexpensively including

  ment as part produced by deep drawing; thanks to its construction and in particular that of the first guide element 21, while allowing easy fixing to be carried out on the

  connector 11, this lever is guaranteed to operate.

R E V E ND I C A T IONS

  1) Removable electrical connection device comprising a

  connector (11) pivotally receiving a lever

  rusting (13) by means of first guide elements

  dage (21), and a socket (12) with guide tracks (32)

  receiving the locking lever (13) with the second elements

  guide elements (22) and which, thanks to the second guide elements,

  dage (22) and to the guide tracks (32), during the tilting of the locking lever (13) ensures the relative displacement of the

  connector (11) and socket (12), and allows their

  rusting, characterized in that the guide elements (21, 22) are produced in one piece with the locking lever (13), at least the first guide element (21) has at least one part at its free end stamped (24) parallel to the pivot plane of the locking lever (13), stamped part (24) made

  as a snap connection element which, in a

  mounting position is engaged through a cutout (26) of di-

  relatively large mensions, with play, in the wall (16) of the connector (11), transversely to the pivot axis of the locking lever (13) to engage therein and to rotate parallel to the pivot axis of the locking lever (13) by forming a bayonet connection with the wall (16) and

  by locking in an operating position, the connector

tor (11) and its socket (12).

  2) Connection device according to claim 1, characterized in that the locking lever (13) is a sheet metal part and the guide elements (21, 22) are end pieces of the parts of the locking lever (13) located in the pivot plane and having a wall thickness at least approximately equal to the wall thickness of the other parts of the lever

lock (13).

  3) Connection device according to claim 2, characterized in that the locking lever (13) is U-shaped with two branches parallel to the pivot axis (17) provided, on the one hand, with second elements of guide (22) and, on the other hand,

  first guide elements (21) offset from the second elements

  guide elements (22), and forming the pivot axis of the lever

lock (13).

  4) Connection device according to claim 3, characterized in that the guide elements (21, 22) are elongated in the form of sockets and are provided in opposite directions each

  times relative to the pivot plane of the lever

rusting (13).

  5) Connection device according to claim 4, characterized in that

  each stamped part (24) of each of the first two elements

  guide elements (21), is formed by a first projection (24)

  provided parallel to the pivot axis of the lever

rusting (13).

  6) Connection device according to claim 5, characterized in that

  the projecting parts (24) lie on a geometric circle

  that and have different angular intervals.

  7) Connection device according to claim 6, characterized in that a first cut (26) is made in the wall (16) of the connector (11), associated with each guide element (21), this cut being larger at level of the heel foot as the first guide element (21), with cutouts (27) for

  passing the projecting parts (24) into an an-

  of the locking lever (13) corresponding to the posi-

mounting tion.

  8) Connection device according to claim 7, characterized in that

  the projecting parts (24) come to take behind the

  wall (16) in another angular position than the

mounting position.

  9) Connection device according to claim 8, characterized in that

  the cavity (26) forms, in the direction of engagement of the pre-

  better guide elements (21), a hollow part (29) which forms a fictitious circle constituting the outer limit of the protruding parts (24), and the depth of the hollow part (29) is greater than the thickness projecting parts (24).