FR2493052A1 - ELECTRICAL CONNECTOR PROVIDED WITH MEANS FOR TIGHTENING - Google Patents

Abstract

A. ELECTRICAL CONNECTOR CONTAINING AN INSULATED BOX WITH CAVITIES IN WHICH TERMINALS ARE HOSTED WITH A PART FOR CONNECTING THE WIRE AND MEANS FOR TIGHTENING. B. CONNECTOR CHARACTERIZED IN THAT THE MEANS ALLOWING THE TIGHTENING INCLUDE A WIRE RETAINING FINGER OF SUFFICIENT LENGTH SO THAT ITS END EXCEEDS THE MIDDLE LINE OF THE WIRE CONNECTION ZONE, THIS FINGER SHOWING A SURFACE TURNED TOWARDS THE WIRE THE CAVITY AND COVERING MORE THAN HALF OF THIS CAVITY TO DEFINE A WIRE STOP, WHILE MEANS LIMIT THE ELASTIC STROKE OF THE WIRE RETAINING FINGER. C. THE INVENTION APPLIES IN PARTICULAR TO THE CONNECTION OF AN INSULATED WIRE WITH ANOTHER CIRCUIT ELEMENT.

Description

The present invention relates generally to a connector

  electrical, and in particular to electrical connectors having means for clamping to prevent accidental tearing of a wire connected in this connector. In many electrical connectors provided for connecting wires, it is necessary to provide

  means allowing a tightening to avoid the pulling out ac-

  cidentel of a wire that has been housed and connected in this connector.

  An example of a connector of this type is described in the

  U.S. Patent No. 4,191,442.

  In this US Pat. No. 4,191,442, the connector generally comprises a casing.

  in which is formed a cavity for receiving

  and a wire connection area adjacent to the cavity for receiving at least one wire moved laterally from its axis into the cavity. A terminal having a connection portion of

  wire intended to be electrically connected to the conductive part

  trice of the wire is mounted in this cavity. Means for clamping are formed in the casing being adjacent to the

  wire connection part of the terminal.

  One form of clamping means disclosed in US Patent No. 4,191,442 includes a finger retaining a flexible wire and extending into the wire connecting region to define a narrow wire receiving entrance. . This finger is likely to move Plasiquement to allow the wire to pass through the entrance

  in the cavity to be connected to the terminal.

  Although the clamping structure described in United States Patent No. 4,191,442

  provide a means of avoiding accidental wrenching

  wire of the terminal, in certain applications, the configuration of

  ration thus described does not prevent accidental disconnection if sufficient effort is applied to the wire. Consequently, in this type of application, the means for clamping described in US Pat. No. 4,191,442 are not

not adequate.

  It is therefore the main object of the present invention to create an electrical connector for electrically connecting the conductor portion of a wire to a 1 * - 2.-

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  other element of circulation, as follows: meaning

  better or better.

  According to a form of the ir.venion h5b- --ele-

  considered, this invention relates to an electrical

  cue for electrically connecting the conductive portion of a wire to another circuit element, said connector comprising: - an insulated housing with a cavity in said housing for receiving at least one horn and a wire connection area adjacent to this cavity for receiving at least one wire displaced laterally with respect to its axis in the cavity, at least one terminal mounted in the cavity and having a wire connection zone designed to be connected electrically to the conductive part of this wire, - Means for clamping, milled in the boftier in the vicinity of the portion of the terminal to connect the wire, these

  means allowing the coporting tightening at least one finger

  holding the flexible wire and extending into the area for

  threading the wire by defining an inlet for receiving the wire tightly, the finger being resiliently movable to enable the

  wire to pass through this entrance inside the cavity.

  té, connector characterized in that the means for allowing the clamp cohortent: - a finger to retain the wire having a sufficient length

  so that its end is disposed beyond the line

  connecting finger of the wire, this finger conzortant a sarface turned towards the inside of the cavity and covering more than half of this cavity zor defirir a stop wire, - means of limitation mernagés on a cost of the cavity, spaced from the and covering it to limit the elastic stroke of the finger in an air section away from the cavity. The invention will be described in more detail with reference to exemplary embodiments shown in the accompanying drawings in which: FIG. 1 is a perspective view of a connector. the inve-ntion and in the water are cor..ected son,

  - i_ 2 -sjre 2.is a view e; r. -ele in

  The invention relates to a clamping device of the prior art having a plurality of wire connection zones, each zone comprising a wire in the same state. a different position,

  FIG. 3 is an elevation view of

  larger scale showing the end

  the tightening of the connector according to the present invention, with several

  If each zone has a wire in a different position, Referring now to the drawings, FIG. 1 shows a connector designated as a whole by, according to the present invention with a plurality of insulated wires 12 therein. connected. The connector 10 generally comprises an insulated casing 14 in which are formed a plurality of cavities 16 for receiving terminals, In each

  cavity 16 is mounted a terminal 18 of the isolation removal type.

  each terminal having a wire receiving slot 20

  arranged on it to remove the insulation on the wire 12 and

  blink an electrical contact with the central conductive part

22 of this thread.

  To better illustrate and better describe the

  advantages of the connector 10 according to the present invention by

  In the prior art, FIGS. 2 and 3 have been provided to allow comparison. In particular Figure 2 shows a connector 110 having means for clamping the type known in the prior art. Figure 3 shows the connector according to the present invention having new and improved means for clamping, which will be discussed in more detail below. To facilitate this examination, the reference numerals of like parts of the connector of the art prior

  shown in Figure 2, will include the same two last

  numbers than those of connector 10 of the present invention.

  shown in Figures 1 and 3. The reference numbers

  this of the 110 connector will be preceded by an 'l'.

  Referring now to Figure 2,

  the part of the connector 110 of the prior art which is

  tee, has three son connection areas 124A, 124B and 124C. Each of these areas 124k, 124B and 124C is adjacent to a respective cavity 116 in which is housed a terminal for receiving a wire 112 moved laterally with respect to its axis 3.- 4, -

in this cavity.

  Means allowing the tightening of this

  110 of the prior art shown in FIG.

  In general, there are flexible wire retaining fingers 126 and 128 extending from opposite sides of the cavity in the respective wire bonding regions 124A, 124B, and 124C. The space between the ends of the wire retaining fingers 126 and 128 defines a narrower wire receiving inlet having a width smaller than the diameter of the wire 112. The fingers 126 and 128 are resiliently movable to allow the wire 112 to pass through their entry into

  the cavity 116 to be connected to their respective terminal 18.

  Referring now in more detail to

  FIG. 3, the represented part of the connector 10 of the present

  the invention comprises three son connection areas 24A, 24B and 240 adjacent their respective cavities 16 to receive a wire 12 moved laterally with respect to its axis in the cavity.

  The means of the connector 10 according to the present

  The invention allows the clamping, generally comprise a finger 26 for retaining the flexible wire, extending into the

  wire connection areas 24A, 24B and 240. The finger 26 of

  the wire is of sufficient length that its end

  mity is disposed beyond the center line of its respective connection area. A surface 30 of the retaining finger 26 is directed towards the interior of the cavity 16 and covers more

  half of the cavity to define a wire stop.

  A limiting means in the form of a finger 28 thicker and less elastic, extends from one side of the cavity 16 opposite to the elastic finger 28, which it is spaced and covers, to limit the elastic travel of

  this finger 26 in the direction away from the cavity.

  A receipt input of the wire in the form

  of an inclined passage, is delimited between the fingers 26 and 28.

  The finger 26 is able to move elastically towards the cavity 16 to allow the wire 12 to pass through this

entrance into the cavity.

  The side 32 of each cavity 16 from

  which extends the elastic finger 26, takes a form of ramp compared to the opposite side 34 to guide the wire to the side 32.This gives the certainty that a wire 12 urged by an outwardly directed force, comes into stop against the

stop surface 30.

  By examining both FIGS. 2 and 3, the advantages of the connector 10 according to the present invention shown in FIG. 3 can be appreciated. In particular,

  in the prior art connector 110 shown in FIG.

  2, each wire receiving inlet coincides with the center line of each cavity 116 and each wire 112 housed in this cavity. Consequently, when a force directed upwards

  is applied to the wire 112 in the area 124 Cg the wire is sus-

  able to pass through the wire receiving input into

  a direction opposite to that of its insertion.

  On the other hand, considering FIG. 3 and in particular the wire connection area 240, when an upward force is applied to the wire 12, the wire abuts against the stop surface 30. is due to the fact that the finger 26 exceeds the median line of the cavity 16. In the case where the upward movement of the wire 12 continues, the race

  the elastic finger 26 is limited or stopped by the finger 28.

  With regard to the connector 10 according to the present invention, it would be necessary to apply to the wire 12 a

  much greater force directed upward to provoke

  accidental disconnection of the conductive part 22

  wire of its respective terminal 18. It turned out that the magni-

  study of the upward force required to disconnect

  a wire 12 in the manner described above, is approximate-

  four times that needed in the art connector

  prior art 110 shown in FIG.

5.-

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Claims (2)

1-Electrical connector for electrically connecting the conductive part of a wire to another circuit element, this connector comprising: an insulated casing with a cavity provided in this casing for receiving at least one terminal and a zone connecting wire adjacent to said cavity for receiving at least one wire moved laterally with respect to its axis in the cavity, - at least one terminal mounted in the cavity and having a wire connection area adapted to be electrically connected to the portion conductive of this wire, - means for clamping, formed in the casing near the portion of the terminal for connecting the wire, these means for clamping comprising at least one finger holding the flexible wire and extending into the zone for the connection of the wire by defining an input for receiving the tight wire, this finger being elastically movable to allow the wire to pass through this inlet inside the cavity, the connector characterized in that the means for enabling clamping comprise: a finger for retaining the wire having a length sufficient for its end to be disposed beyond the line diane connection of the wire, the finger having a surface facing the interior of the cavity and covering more than half of this cavity to define a wire stop, - limiting means provided on one side of the cavity, spaced from the finger and covering it to limit the elastic stroke of the finger in a direction away from the cavity.   2. Connector according to claim 1,   characterized in that the limiting means extend to   shot from one side of the opposite cavity to the finger and in that the entrance   receiving the wire is an inclined passage defined between these yen of limitation and the wire.   - Connector according to claim 1, characterized in that it comprises guide means formed in the cavity for guiding a wire to the wire arresting surface, while an outwardly directed force is applied to a wire connected to a terminal.   6.- 7.- 93 D- 4.- Connector according to any of   Claims 1 to 3, characterized in that in this terminal   is arranged, to receive the wire, a slot likely to remove   the insulation of the wire and make electrical contact with the conductive part of this wire.