FR2739504A1 - EXTENSIBLE AND COMPRESSIBLE CONNECTION ELECTRICAL BEAM - Google Patents

Abstract

The subject of the invention is an extensible and compressible electrical harness (1) for connection between a fixed member that is difficult to access and a connection member, of the type comprising at least two flexible conductor wires (2) and provided at their ends with means (3 ) connection with said organs. This electrical bundle (1) comprises a frame (10) of plastic material having a succession of corrugations and formed by at least one rod and by bent supports (12) of the conductive wires (2) fixed at least two by two on said rod at the level of the hollows and tops of the corrugations. The invention applies to the connection of electrical or electronic devices installed in hollow bodies.

Description

The present invention relates to an expandable electrical harness and

  compressible connection between a fixed member difficult to access and an organ

  connection and, more particularly, an electrical

  for connecting electrical appliances or

  electronic devices implanted in hollow bodies and difficult to

accessible.

  In many industrial applications, electrical or electronic devices are located in areas that are difficult to access, such as

  hollow body which poses problems for their connection

  electrical connection which may lead to incorrect connections

  because the operator does not see the devices.

  This is the case for example actuators of

  locks arranged in a motor vehicle door.

  Indeed, these actuators are mounted between the outer panel and the inner panel of the door in

  a zone that is difficult for the operator to access.

  Until now, once the actuator is mounted inside the door, the operator slides his hand into an opening on the inner panel of this door and makes the interconnection between this actuator and a connector of the door. a power supply harness. This operation is difficult to carry out and the

  risk of a bad connection is important because the

rator does not see the actuator.

  These difficulties are also encountered in

other applications.

  The object of the invention is to avoid the disadvantages

  previously mentioned by proposing an electric beam

  that extensible and compressible which removes the risks of bad connections due to the connection blind between

the device and the connector.

  The subject of the invention is therefore an electrical beam

  extensible and compressible connecting rod between a fixed member which is difficult to access and a connection member, of the type comprising at least two flexible conductor wires and provided at their ends with means of connection with said members, characterized in that it comprises a plastic frame having a succession of corrugations and formed by at least one rod and bent supports of the conductive son fixed at least two by two on said rod at the hollows and

peaks of undulations.

  According to other features of the invention: the reinforcement comprises two rods parallel to each other and kept apart from each other by the bent supports fixed between said rods at the hollows and summits of the corrugations, the corrugations are uniform the supports have a U-shaped cross-section whose open parts are oriented towards the hollow of the corrugations, the reinforcement and the conductive threads are embedded.

in a flexible elastomer.

  The characteristics and advantages of the invention

  will appear in the following description,

  given only by way of example and with reference to the accompanying drawings, in which: - Figure 1 is a schematic longitudinal sectional view of an electric harness according to the invention; - Figure 2 is a sectional view according to the line 2-2 of Figure 1,

  FIG. 3 is a diagrammatic view in

  a first embodiment of the armature of the electric harness according to the invention,

  FIG. 4 is a diagrammatic view in

  pective of a second embodiment of the armature of the electric harness according to the invention, - Figures 5 and 6 are two partial schematic views of a door of a motor vehicle showing the connection of a lock actuator provided with a

  electrical harness according to the invention.

  In FIGS. 1 and 2, there is shown a bundle generally designated by the reference 1 and which is intended for connection between a hard-to-reach fixed member and a

  connection and more particularly to the connection of

  similar electrical or electronic devices installed in

hollow body.

  This harness 1 consists of at least two flexible conductor wires and provided at their ends with connection means constituted for example by

  terminals 3 for mechanical fastening and electrical connection

than.

  The electrical harness 1 also comprises a reinforcement 10 of plastic material intended to maintain and

  to support the wires 2.

  As shown in FIGS. 3 and 4, the reinforcement 10 made of plastic material has a succession of corrugations and comprises at least one rod 11 and bent supports 12 making it possible to snap the wires

drivers 2.

  According to a first embodiment shown in FIG. 3, the electrical harness 1 comprises two conducting wires 2 and in this case the armature 10 comprises a rod 11 and bent supports 12 fixed in pairs to said rod 11 at the level of the wires. hollows and peaks of

  undulations and on either side of said rod 11.

  According to a second embodiment shown in FIG. 4, the electrical harness 1 comprises three conducting wires 2 and in this case the armature 10 comprises two rods 11 parallel to each other and kept apart from each other by the bent supports 12 fixed on said rods 11 at the hollows and peaks of the corrugations. In this embodiment, the armature 10 comprises at each depression and at each vertex

  undulations three bent supports 12.

  In general, the frame 10 has as many rods 11 as conductive wires 2 minus one and,

  at each trough and at each vertex

  as many bent supports 12 as conductive wires

2.

  The rods 11 are formed, between the hollows and the summits of the corrugations, by rectilinear sections 11a and, at each hollow and each vertex of the

  ripples, elbowed portions llb.

  Preferably, the undulations of the armature 10

are uniform.

  The supports 12 of this armature 10 have a U-shaped cross-section and the open portion 12a of the supports 12 is oriented towards the hollow of the corrugations, that is to say that the open portions 12a of the supports 12 placed at a hollow are arranged facing the open parts 12a of the supports 12 placed

  at the vertices adjacent to said troughs.

  Once the conductive wires 2 engaged by snapping into the supports 12, the assembly formed by the armature 10 and the conductive wires 2 is embedded in

a flexible elastomer 15.

  The accordion profile of the frame 10 allows extension or compression of the electric harness 1 and the plastic material constituting the rods 11 and the

  supports 12 is carefully chosen so that the

  1 does not sag under its own weight, while

keeping some flexibility.

  Referring to Figures 5 and 6, we are going to

  holding an example of using the beam

1 according to the invention.

  In this example of use, the electrical harness 1 is intended to connect an actuator of

  lock 20 arranged in a door 21 of an automatic vehicle.

  mobile with a power supply 22.

  The lock actuator 20 is disposed between the outer panel and the inner panel of the door 21 in

an area difficult to access.

  In order to facilitate the interconnection between

  lock actuator 20 and the supply beam 22, the lock actuator 20 is equipped with an electric harness 1 according to the invention and which extends said

lock actuator 20.

  The free end of the electric harness 1 opposite to that connected to the lock actuator 20 is provided for example with a female connector 23 intended to be connected to a male connector 24 provided at the end of the

supply beam 22.

  Thanks to the harness 1 which extends the lock actuator 20, the connector 23 is opposite an opening 25 formed on the inner panel of

the door 21.

  Thus, it is sufficient for the operator to assemble the female connector 23 with the male connector 24 to make the connection between the lock actuator 20 and

the supply beam 22.

  Then, and as shown in FIG. 6, the operator compresses the electrical harness 1 so as to bring the interconnection formed by the female connector 23 and the male connector 24 onto a fastening lug 26 provided in the door 21 and to connect this connector. 23 and 24 with said tab 26 by means of a suitable retaining system, such as for example a strap or a

staple, not shown.

  The length of the electric harness 1 is deter-

  in order for the female connector 23 to open

  of the opening 25 and is easily accessible.

  The compression of the electric harness 1 is

  made in an orderly manner thanks to the accordion profile of the frame 10 of this harness 1 and thanks to the

  choice of the plastic material composing this frame 10.

  The extensible and compressible electrical harness according to the invention makes it possible to eliminate the risks of bad connection when connecting electrical or electronic devices implanted in bodies

hollow and difficult to access.

Claims (7)

  1. Extensible and compressible electrical harness   connection between a fixed device which is difficult to access   and a connecting member, of the type comprising at least two flexible conductors son (2) and provided with their   ends of connection means (3) with said   characterized in that it comprises a reinforcement (10) made of plastic material having a succession of corrugations and formed by at least one rod (11) and bent supports (12) of the conductive wires (2) fixed at least two by two on said rod (11) at the recesses and peaks of undulations.   2. Electrical harness according to claim 1, characterized in that the armature (10) comprises two rods (11) parallel to each other and held apart from each other by the bent supports (12) fixed between said rods (11) to level of the hollows and peaks of the undulations.   3. Electrical harness according to claims 1   and 2, characterized in that the corrugations are uni- forms.   4. Electrical harness according to claims 1   and 2, characterized in that the supports (12) have a U-shaped cross-section. 5. Electrical harness according to any one of   preceding claims, characterized in that the   open portion (12a) of the supports (12) is oriented towards the hollow of the undulations.   6. Electrical harness according to any one of   preceding claims, characterized in that the arma-   ture (10) and the lead wires (2) are embedded in a flexible elastomer (15).   7. Use of the harness (1) according to   any of the preceding claims for the   connection of electrical or electronic devices implanted in hollow bodies.