EP3457499A1 - Elektrische verbindungsvorrichtung - Google Patents

Elektrische verbindungsvorrichtung Download PDF

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Publication number
EP3457499A1
EP3457499A1 EP18194111.3A EP18194111A EP3457499A1 EP 3457499 A1 EP3457499 A1 EP 3457499A1 EP 18194111 A EP18194111 A EP 18194111A EP 3457499 A1 EP3457499 A1 EP 3457499A1
Authority
EP
European Patent Office
Prior art keywords
face
support
lug
base
intended
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18194111.3A
Other languages
English (en)
French (fr)
Other versions
EP3457499B1 (de
Inventor
Jean-Marc BLINEAU
Frédéric COLIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Electrical and Power SAS
Original Assignee
Safran Electrical and Power SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safran Electrical and Power SAS filed Critical Safran Electrical and Power SAS
Publication of EP3457499A1 publication Critical patent/EP3457499A1/de
Application granted granted Critical
Publication of EP3457499B1 publication Critical patent/EP3457499B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/26—End pieces terminating in a screw clamp, screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/625—Casing or ring with bayonet engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/54—Bayonet or keyhole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to an electrical connection device intended to be fixed on an electrically conductive structure and to be electrically connected to an electric cable.
  • the invention may relate to the interconnection of electric current return circuits, especially in aircraft.
  • electrical cable broadly designates any electrical conductor likely to be part of a wired electrical network.
  • the figure 1 illustrates an example of a device 100 of electrical connection commonly used in aircraft.
  • An electrical cable 10 is crimped into a lug 11.
  • the lug 11 has an annular conductive surface 12 intended to be kept in contact with any electrically conductive structure 13, for example a metal surface of the aircraft.
  • the structure 13 is protected at the surface by an insulating layer, with the exception of a surface rendered conductive.
  • the rendered conductive surface is intended to come into electrical contact with the lower range of the conductive surface 12 of the terminal 11.
  • This electrical contact is held / locked by means of assembly means comprising a stud 14 (eg a screw threaded) traversing perpendicularly the electrically conductive structure 13, washers 16 and a nut 15.
  • the electric cable 10 and the lug 11 are included in the same parallel plane, or inclined of the order of 15 °, with respect to the plane of the electrically conductive structure 13.
  • Examples of electrical connection devices are disclosed in particular in the documents US 7,344,421 , DE 10 2012 006663 , WO 2009/106581 , WO 2004/084349 , WO 2010/012872 , US 6,971,925 , DE 20 2016 100256 , DE 10 2013 204832 and DE 196 24 662 .
  • the present invention aims to overcome the aforementioned drawbacks. More specifically, the present invention is intended in particular to facilitate the production of electrical connections between electrical cables and electrically conductive structures, reduce the preparation and assembly time of these electrical connections, reduce the number of assembly elements used and limit the risk of loss or oblivion of electrically conductive foreign bodies.
  • each annular ramp of the locking ring may comprise a latching locking pin in a corresponding slot formed in an annular groove of the support, each light being made so that at least a lug of the ring forms, when it is latched in a corresponding light, a visual indicator relating to a locking state of the lug against the support.
  • the snap of each lug of the locking ring in a corresponding slot has the advantage of reinforcing the locking of the electrical contact between the lug and the support.
  • the latched state of a pin in a corresponding light is directly observable, thus providing an indication of the proper locking of the pod against the support.
  • the terminal may comprise a locking ring traversed at its center by the tubular shaft, the ring comprising tongues extending radially from its circumferential periphery, the support comprising projecting portions. from the second face of the support, the portions comprising lights cooperating with the tabs so that the locking ring maintains contact with the second face of the base against the second face of the support and covers the locking clips.
  • the snap of each tab of the locking ring by cooperation in a light has the advantage of reinforcing the locking of the electrical contact between the terminal and the support.
  • the latched state of the tabs is directly observable through the lights, thus providing an indication of the proper locking of the pod against the support.
  • the electrical connection device of one of the three embodiments summarized above may comprise an O-ring seal surrounding an electrically conductive surface forming all or part of the second face of the base of the lug.
  • the pin and the tubular shaft may comprise visual indicators configured to indicate a state of locking of the terminal against the support.
  • the non-visibility of the visual indicators can attest to a good locking of the electrical contact between the terminal and the support.
  • the device may comprise immovable fixing elements configured to allow the fixing of the support of the device to the electrically conductive structure.
  • the traditional montage illustrated on the figure 1 leads to obtaining a crimped cable in a lug disposed in a plane parallel or inclined by 15 ° with respect to an electrically conductive structure.
  • the lug extends in a plane perpendicular to the electrically conductive structure.
  • the longitudinal axis of an electric cable inserted in this lug will also have a direction perpendicular to the electrically conductive structure.
  • the orientation of the electrical cable is no longer dependent on a direction related to the screwing of the terminal on the electrically conductive structure. This makes it possible in particular to reduce the mechanical stresses exerted on the electrical cable and makes it possible to benefit from an angle of freedom all around its longitudinal axis, thus facilitating access to the electrical connection device, in particular during the operations of assembly and maintenance.
  • the electrical connection device comprises a support intended to be assembled on the electrically conductive structure by means of irremovable fastening means, such as rivets, while the terminal is made of way removable relative to the support.
  • the removability of the terminal relative to the support can in particular be obtained by rotating ramps in corresponding grooves, by clipping with corresponding locking clips, interlocking in a shoe, or by pinching on a pin.
  • the Figures 2 to 5 illustrate a device 200 for electrical connection according to a first embodiment of the invention.
  • the device 200 is centered with respect to an axis X2 of revolution and is formed of a support 201 and a lug 210.
  • the support 201 is intended to be fixed on an electrically conductive structure 250, for example a metal structure of an aircraft. All or part of the support 201 is electrically conductive, in particular a lower face of the support 201 intended to be fixed on the electrically conductive structure 250.
  • the fixing of the support 201 on the structure 250 is carried out by means of irremovable fixing elements 202, for example using rivets with milled or round heads, successively passing through the fixing orifices 203, 204 formed respectively in the support 201 and the electrically conductive structure 250.
  • the support 201 comprises a first face 205 (lower face) intended to come into contact with the structure 250 and a second face 206 opposite the first face 205, that is to say an upper face.
  • Annular guiding and locking grooves 207 project from the second face 206 and extend annularly so as to delimit between them a housing 201-1.
  • the support 201 comprises two annular guide grooves 207 and locking.
  • the grooves 207 are curved in a first plane perpendicular to the axis X2 and present in a second plane perpendicular to the first plane and comprising the axis X2 an inverted L shape extending from the second face 206 of the support 201 and whose free end extends in the direction of the axis of revolution X2. More specifically, each groove 207 is formed of a first portion 207-1 perpendicular to a second portion 207-2.
  • the first portion 207-1 protrudes from the second face 206 of the support 201, that is to say perpendicularly relative to the upper face of the support 201, in other words still in a direction parallel to the axis X2 .
  • the second portion 207-2 protrudes from one end of the first portion 207-1, opposite the end of the first portion 207-1 integral with the upper face of the support 201, and orthogonal to the first portion 207-1.
  • the second portion 207-2 therefore extends in a plane parallel to the support 201.
  • the second portion 207-2 may be parallel to the support 201 in a radial direction of the support, that is to say in a direction s extending between the first portion 207-1 of the groove 207 and the axis X2, and not being parallel to the support 201 in a circumferential direction of the support 201, that is to say being contained in a plane having a non-zero angle relative to the support 201.
  • Each annular groove 207 further comprises at a circumferential end a stop 208. The stop 208 closes in a plane perpendicular to the support 201 a space existing between the second portion 207-2 of the groove 207 and the support 201 the stop 208 extending along the first portion 207-1.
  • the support 201 has in radial section, that is to say in a plane perpendicular to the axis of revolution X2, a substantially circular profile for which surface portions have been removed between the annular grooves 207 and outside (relative to the axis of revolution X2) 203 fixing holes.
  • the surface occupied by the support 201 on the structure 250 is thus reduced, as is the mass of the support 201.
  • the support 201 may for example have a perfectly circular shape in radial section.
  • the lug 210 is electrically conductive and is made removably with respect to the support 201.
  • the lug 210 is formed of an annular base 211 and a tubular shaft 212 fixed coaxially with the base 211.
  • the base 211 of the pod 210 is intended to be placed in the housing 201-1 defined by the grooves 207 annular guide and locking.
  • the base 211 comprises a first face 213 (upper face) from which extends the tubular shaft 212.
  • the base 211 has a second face 214 opposite the first face 213, that is to say one face lower, intended to bear on the second face 206 of the support 201 when the base 211 is present in the housing 201-1 defined by the grooves 207.
  • All or part of the lower face of the base 211 may be electrically conductive .
  • a circular surface centered with respect to the axis X2 of revolution of the lug 210 and forming part of the second face 214 of the base 211 may be electrically conductive.
  • a seal ring 215 may surround this surface so as to ensure a good seal of the electrical contact between the conductive surface of the lug 210 and the support 201.
  • the seal 215 is for example placed in a housing formed in the lower face of the base 211 and around the electrically conductive surface of the base 211.
  • the implementation of such a seal 215 then has the advantage vis-à-vis the state of the art to be free of stripping operations of the underside of the terminal 210 and the upper face of the support 201, or the application of a sealing varnish on the conductive surface of the terminal 210. The preparation time relating to the assembly of the device 200 electrical connection is therefore reduced.
  • tubular shaft 212 of the lug 210 allows the electrical connection of the lug 210 with an electric cable 230 (shown in broken lines) by inserting an end 230a of the electric cable 230 through an upper orifice 212-1 of the tubular shaft 212.
  • the walls of the tubular shaft 212 may be sufficiently thin to be deformable, so as to allow crimping of the tubular shaft 212.
  • this end can be immobilized in the tubular shaft 212 by crushing and permanent deformation of the walls of the tubular shaft 212.
  • the support 201 When the support 201 is fixed on the electrically conductive structure 250 and an electric cable 230 is plugged into the lug 210, the electrical connection between the electrical cable 230 and the electrically conductive structure 250 then rests on the electrical contact of the lug 210 against the support 201.
  • the lug 210 being removable relative to the support 201, various means for holding the lug 210 against the support 201 can be envisaged.
  • the lug 210 comprises a locking ring 216 intended to allow, when the lower face (second face 214) of the base 211 bears on the upper face (first face 206) of the support 201, a locking the electrical contact between the lug 210 and the support 201.
  • the locking ring 216 has a central portion 216-1 of substantially annular shape traversed at its center by the tubular shaft 212.
  • the locking ring 216 is movable in translation along the tubular shaft 212, along the axis X2 in the illustrated example.
  • the central portion 216-1 of the locking ring 216 is made so as to be inserted in the housing 201-1 defined by the annular grooves 207 of the support 201 and cover the base 211 when the lug 210 is assembled on the In other words, the central portion 216-1 of the locking ring 216 has, in a plane perpendicular to the axis X2, a radius smaller than that of the circle on which the annular grooves 207 extend. and a radius greater than that of the base 211.
  • the locking ring 216 includes annular ramps 216-2 extending from its outer periphery, the ramps 216-2 being disposed around the central portion 216-1.
  • the annular ramps 216-2 are made so as to cooperate with the annular grooves 207 of the support 201.
  • the ramps 216-2 may in particular be insertable and rotatable in a space existing between the second portion 207-2 of the groove 207 and the support 201.
  • the ramps 216-2 can extend in a plane parallel to the support 201, or alternatively be contained in a plane having a non-zero angle with respect to the support 201.
  • the ramps 216-2 are chosen to the same number as the annular grooves 207, two in the example shown, a higher number of ramps 216-2 and grooves 207 annular can be implemented.
  • the locking ring 216 formed of the central portion 216-1 and the ramps 216-2, is rotatable about the tubular shaft 212. The rotation of the locking ring 216 then makes it possible to control the locking of the electrical contact. resulting from the support of the lug 210 against the support 201.
  • the locking ring 216 When the lug 210 is resting on the support 201, the locking ring 216 can slide along the tubular shaft 212 along the axis X2 and come to bear on the support 201. The central portion 216-1 of the ring then covers the base 211 of the terminal 210 and the ramps 216-2 come to rest on the support 201.
  • the control of the locking of the electrical contact between the lug 210 and the support 201 by the locking ring 216 then consists, via the rotation of the ramps 216-2, to vary an interposition resistance resulting from the contacting of each ramp 216-2 of the locking ring 216 with a corresponding groove 207 of the support 201.
  • each groove 207 of the support 201 and each corresponding ramp 216-2 of the ring is then not sufficient to guarantee a locking, that is to say a maintenance, of the electrical contact of the lug 210 against the support 201.
  • the progressive rotation, with respect to the support 201, of the locking ring 216 then allows the ramps 216-2 to progressively cooperate with the grooves 207 and thus to increase their interposition resistance between them.
  • the stops 208 of the annular grooves 207 are configured to limit the rotation of the locking ring 216 by contact with the ramps 216-2.
  • the ramps 216-2 rotate in contact with the abutments 208 of the annular grooves 207, the interposition resistance of the annular grooves 207 with the ramps 216-2 then makes it possible to obtain a locking state capable of maintaining the electrical contact of the lug 210 against the support 201.
  • the rotation of the locking ring 216 may, for example, be limited to a quarter turn, that is to say, ninety degrees of angle, other degrees of rotation that can be envisaged.
  • An example of a state of lock of the electrical contact between the terminal 210 and the support 201 is illustrated on the figure 3 for a rotation a quarter of a turn.
  • this locking is obtained by rotation of the locking ring 216 in a clockwise direction, the direction of rotation to obtain this locking being indicated to the user on the upper face 216-2 of the locking ring 216.
  • Unlocking electrical contact between the lug 210 and the support 201 is obtained by simple reverse rotation of the locking ring 216, this unlocking may allow a possible withdrawal of the lug 210 after removal of the locking ring 216.
  • each ramp 216-2 may for example comprise a locking lug 217 projecting from this face.
  • a slot 209 intended to cooperate with this lug 217 is then formed through the second portion 207-2 of a groove 207 corresponding.
  • each lug 217 is snapped into a corresponding slot 209 so as to enhance the holding of this contact.
  • each lug 217 has in a plane parallel to the axis X2 a beveled shape to facilitate the insertion of the ramp 216-2 from which it projects into a groove 207 corresponding.
  • Each ramp 216-2 can be made hollow, to allow the realization of a slot 218 U-shaped around each lug 217, the slot 218 being formed through an upper face 216-3 of the ramp 216 -2 supporting the lug 217.
  • the realization of each slot 218 U-shaped forms a tongue 219 elastically deformable on the upper face 216-3 of each groove 207, the lug 217 being disposed on the tongue 219.
  • the interposition resistance between a groove 207 and a ramp 216-2 varying during the rotation of the locking ring 216, the production of the tongues 219 elastically deformable then limits the risk that the lugs 217 come to block the rotation of the locking ring 216 before reaching the stops 208.
  • each flexible tongue 219 bends under the effect a pressure exerted by the second portion 207-2 of each groove 207 on each lug 217.
  • a ramp 216-2 comes into contact with a stop 208
  • its lug 217 arrives opposite a corresponding light 209 formed in the second portion 207-2 of the groove 207.
  • the pressure exerted on the lug 217 and therefore indirectly on the tongue 219 then becomes zero.
  • the flexible tongue 219 then returns to a state of rest, that is to say to a non-deformed state, and the lug 217 snaps into the light 209, as shown in solid line on the figure 5 , thus ensuring a complementary locking of the contact between the lug 210 and the support 201.
  • the latching of each lug 217 in a corresponding slot 209 also makes it possible to constitute a visual indicator relating to the locking state of the lug 210 against the 201.
  • the latched state of the lug 217 in the light 209 directly observable by a person in charge of assembling the locking ring 216, thus provides an indication of the good locking of the lug 210 against the support 201.
  • Unlocking the contact between the lug 210 and the support 201 can in turn be obtained by applying a pressure on the pins 217 adapted to disengage them from their lights 209, then by reverse rotation of the locking ring 216 .
  • the first embodiment described above makes it possible to guarantee a good electrical contact between the support 201 and the lug 210 by simple rotation of a locking ring 216.
  • Such an embodiment is particularly advantageous vis-à- screw of the state of the art because it provides a removable lug 210 vis-à-vis the support 201, easy and quick to assemble via the rotation of the locking ring 216.
  • such an assembly does not requires no tools and specific fastening means (eg screws, screwdrivers, washers) thus avoiding any risk of presence of foreign conductive body in the device 200 electrical connection.
  • the Figures 6 to 8 illustrate a device 300 of electrical connection according to a second embodiment of the invention.
  • the device 300 is centered with respect to an axis X3 of revolution and is formed of a support 301 and a lug 310, the support 301 being intended to be fixed on an electrically conductive structure 350, by example a metal surface of an aircraft.
  • the support 301 comprises a first face 302 (lower face) intended to come into contact with the structure 350 and a second face 303 opposite the first face 302, that is to say an upper face.
  • At least two locking clips 304 protrude from the second face 303 of the support 301 and delimit between them a housing 305 for receiving a lower face of the lug 310.
  • the locking clips 304 are distributed in three sets 306 of three clips, the sets 306 being evenly spaced from each other on the same circle in a plane perpendicular to the axis X3.
  • the housing 305 defined by the clips is here circular in a plane perpendicular to the axis X3.
  • the housing 305 could have a different shape, for example a rectangular shape.
  • the locking clips 304 extend in a direction substantially parallel to the axis X3 and have on one inner face facing the axis X3 one or more ribs for cooperating with one or more notches provided on the lug 310
  • the locking clips 304 are intended to lock, when the lug 310 is positioned in the housing 305, an electrical contact existing between the lug 310 and the structure 350 electrically conductive.
  • the electrical contact between the pod 310 and the structure 350 can be direct or indirect. In a first non-illustrated example, when the lug 310 is positioned in the housing 305 of the support 301, the lower face of the lug 310 is in direct contact with a surface of the structure 350.
  • the support 301 comprises an electrically conductive plate 307 overmolded with the support 301.
  • the plate 307 has a bottom face 307-1 intended to come into direct contact with the structure 350 when the support 301 is assembled on the structure 350, and an upper face 307- 2 intended to come directly into contact with the lower face of the base 310 when it is positioned in the housing 305.
  • the implementation of the plate 307 can thus further improve the electrical connection between the pod 310 and the support 301 when the pod 310 is inserted into the housing 305.
  • All or part of the support 301, with or without the plate 307 may be electrically conductive, but not necessarily.
  • the support 301 without the plate 307 may for example be made of composite materials.
  • the support 301 furthermore comprises fixing lugs 308 extending in a plane perpendicular to the axis X3 towards the outside of the housing 305, that is to say in a radial direction opposite to the axis X3.
  • the ears 308 extend from and to the outside of the housing 305 from each spacing between the sets 306 of clips, three ears 308 are here made.
  • the plate 307 may also comprise fastening lugs 307-3 overmolded with the lugs 308 of the support 301.
  • the fixing of the support 301 on the structure 350 is then carried out using immovable fixing elements 301-1, by means of example using rivets with countersunk or round heads, which can cross successively the ears 307-3, 308 for fixing the plate 307 and the support 301, or only the ears 308 of the support 301 (in the absence of the plate 307), and being inserted into corresponding holes in the electrically conductive structure 350.
  • the terminal 310 is electrically conductive and is made removably with respect to the support 301.
  • the terminal 310 is formed of an annular base 311 and a tubular shaft 312 fixed coaxially with the base 311.
  • the base 311 of the lug 310 is intended to be placed in the housing 305 delimited by the locking clips 304.
  • the base 311 comprises a first face 313 (upper face) from which extends the tubular shaft 312.
  • the base comprises a second face 314 opposite the first face 313, that is to say a lower face , intended to come into electrical contact with the electrically conductive structure 350 when the base 311 is present in the housing 305 of the support 301.
  • the electrical contact can be direct via a bearing of the second face 314 against the structure 350 ( in the absence of plate 307) or indirectly via a bearing of the second face 314 against the plate 307.
  • the base 311 further comprises at least one notch 315 extending over its circumference, the notch 315 being made to cooperate with the locking clips 304 of the support.
  • said at least one notch 315 cooperates with the locking clips 304, so as to maintain the electrical contact between the pod 310 and the structure 350.
  • the locking of the electrical contact between the pod 310 and the structure 350 electrically conductive is obtained by simply clipping the base 311 in the housing 305.
  • the base 311 comprises three notches 315 circumferential, any other number of notches can be envisaged.
  • the notches 315 may be bevelled so as to have a harpoon shape, like the notches 315 illustrated on FIG. figure 8 .
  • All or part of the second face 314 of the base 310 may be electrically conductive.
  • the entire surface of the second face 314 (lower face) of the base 310 is electrically conductive.
  • a seal 316 sealing ring can then surround the electrically conductive surface of the second face 314, here all.
  • the implementation of a seal 316 has the advantage of being able to overcome stripping operations of the underside of the lug 310 and the upper face of the support 301, or the application of a sealing varnish on the conductive surface of the pod 310.
  • the tubular shaft 312 of the lug 310 allows the electrical connection of the lug 310 with an electric cable 330 (shown in dotted lines) by inserting an end 330a of the electric cable 330 to through an orifice 312-1 upper tubular shaft 312.
  • the walls of the tubular shaft 312 may be deformable to allow by crimping the walls an immobilization of the electric cable 330 engaged in the tubular shaft 312.
  • the electrical connection between the electric cable 330 and the electrically conductive structure 350 is based on electrical contact (direct or indirectly) of the terminal 310 with the surface 350.
  • this electrical contact can be maintained by clipping, via the cooperation of at least one notch 315 of the base 311 of the lug 310 with the locking clips 304 of the support 301.
  • the maintenance of this electrical contact can be further reinforced by means of locking means additional.
  • the lug 310 comprises a locking ring 317 intended to allow, when the lower face (second face 314) of the base 311 bears on the upper face (first face 306) of the support 301, a complementary locking of the electrical contact between the lug 310 and the structure 350.
  • the locking ring 317 is traversed at its center by the tubular shaft 312 and comprises in a plane perpendicular to the axis X3 of the tongues 318 extending radially from its circumferential periphery.
  • the tongues 318 are made to snap into corresponding slots in the support 301 and can be elastically deformable.
  • the support 301 further comprises portions 309 protruding from its second face 303 in a direction perpendicular to the support 301, that is to say along the axis X3, the portions 309 comprising 309-1 configured lights to cooperate with the tongues 318 of the locking ring 317.
  • the tongues 318 have in a plane comprising the axis X3 a hooked shape, that is to say a quarter-circle shape, extending in a direction opposite to the support 301. This direction of the tongues 318 then makes it possible to confer a good fixing of the locking ring 317 when the tongues 318 are snapped into the slots 309-1 of the support 301.
  • the ring is movable in translation along the tubular shaft 312 along the axis X3 and has a hollow underside made so as to cover the set of s locking clips 304.
  • the base 311 of the lug 310 is clipped via its notches 315 between the locking clips 304 of the support 301.
  • the locking ring 317 then bears on the upper face of the base 311 and the tongues 318 of the ring snap into the slots 309-1 of the support 301.
  • each tongue 318 in a corresponding light 309-1 also makes it possible to constitute a visual indicator relating to the state of locking of the electrical contact between the lug 210 and the electrically conductive structure 350.
  • the latched state of a tongue 318 in a light 309-1 directly observable by a person in charge of assembling the locking ring 317, thus provides an indication of the good locking of the lug 210 with the structure 350.
  • the second embodiment described above makes it possible to guarantee good electrical contact between the structure 350 and the lug 310 by simply clipping the lug 310 into a housing 305 formed in the support 301.
  • This fixing of the lug 310 is removable and can be completed by snapping the tabs 318 of the locking ring 317 in the slots 309-1 of the support 301, thus improving the locking of the electrical contact.
  • Such an embodiment allows once again vis-à-vis the state of the art to provide a pod 310 removable vis-à-vis the support 301, easy and quick to assemble via a system of clips and tabs These assemblies do not require specific tools and fastening means, thus eliminating any risk of the presence of foreign conductive bodies in the electrical connection device 300.
  • the Figures 9 and 10 illustrate a device 400 of electrical connection according to a third embodiment of the invention.
  • the device 400 is formed of a support 401 and a lug 410, the support 401 being intended to be fixed on an electrically conductive structure 450, for example a metal surface of an aircraft.
  • the support 401 comprises a first face 402 (lower face) intended to come into contact with the structure 450 and a second face 403 opposite to the first face 402, that is to say an upper face.
  • the support 401 comprises two locking tabs 405 protruding from the upper face of the support 401.
  • the support 401 further comprises attachment lugs 407, four in the illustrated example, extending outwardly of the housing 406.
  • the fixing of the support 401 on the structure 450 can then be achieved via immovable fastening elements 408, such as rivets with countersunk or round heads, coming through the attachment lugs 407 to fit into corresponding holes in the structure 450 .
  • the terminal 410 is electrically conductive and is made removably with respect to the support 401.
  • the terminal 410 is formed of an annular base 411 and a tubular shaft 412 fixed coaxially with the base 411.
  • the base 411 of the lug 410 is intended to be placed in the housing 406 delimited by the shoe 404 and the locking tabs 405.
  • the base 411 comprises a first face 413 (upper face) from which the tubular shaft 412 extends.
  • the base 411 has a second face 414 opposite the first face 413, that is to say a lower face, intended to establish an electrical contact with the electrically conductive structure 450, via a direct bearing on a surface of structure 450.
  • All or part of the second face 414 of the base 411 may be electrically conductive.
  • the entire surface of the second face 414 of the base 411 is electrically conductive.
  • An O-ring seal (not shown) can then surround the electrically conductive surface of the second face 414.
  • the implementation of such a seal has the advantage of being able to overcome stripping operations of the lower face the base 411 of the lug 410 and the upper face of the electrically conductive structure 450, or the application of a sealing varnish on the conductive surface of the base 411.
  • tubular shaft 412 of the lug 410 allows electrical connection of the lug 410 with an electric cable 430 (shown in broken lines) by inserting one end of the cable through a top hole 412-1 of the barrel 412.
  • the walls of the tubular shaft 412 can be deformable to allow by crimping the walls an immobilization of the electrical cable 430 engaged in the tubular shaft 412.
  • the electrical connection between the electric cable 430 and the electrically conductive structure 450 is based on electrical contact. (Direct) of the terminal 410 against the surface 450. This electrical contact occurs when the base 411 of the lug 410 is inserted into the housing 406, and is maintained by the shoe 404 and the locking tabs 405.
  • the shoe 404 may, for example, present in a plane containing the support 401 a quadrant profile, and in a plane perpendicular to the plane containing the support 401, an inverted L shape extending towards the interior of the housing 406 of the support 401.
  • This inverted L shape is made so as to cooperate with the base 411 of the lug 410 when it is positioned in the housing 406 and be able to exert an elastic force on the upper face of the base 411.
  • the shoe 404 then exerts on the base 411 an elastic force oriented in the direction of the electrically conductive surface 450, thus ensuring the maintenance the electrical contact of the base 411 against the structure 450.
  • the locking tabs 405 which exert an elastic force on the upper face of the base 411 in the direction of the electrically conductive structure 450.
  • the locking tongues 405 extend inwardly of the housing 406 and have at their end 405-1, in a plane perpendicular to a plane containing the support 401, a C-profile oriented towards the outside the housing 406. These C-shaped ends are configured to facilitate the insertion of the base 411 of the lug 410 in the housing 406 and abut on the upper face of the base 411 when the lug 410 is positioned in dwelling 406.
  • the insertion of the lug 410 into the housing 406 of the support 401 can thus be carried out in two steps.
  • a part of the base 411 of the lug 410 is positioned between the shoe 404 and the housing 406, while another part of the base 411 is positioned in abutment over the ends 405-1 of the tongues.
  • the axis of revolution of the terminal 410 then presents in this step an inclination with respect to a plane orthogonal to the support 401.
  • a mechanical force is applied on the part of the base 411 resting on the 405-1 ends of the locking tabs, so as to force the insertion of this part of the base 411 in the housing 406, this part then passing under the tabs.
  • the axis of revolution of the terminal 410 is tilted towards the housing 406, so as to be brought in a plane orthogonal to the support 401.
  • the C shape of the ends 405-1 of the locking tabs 405 can especially facilitate the tilting of the portion of the base 411 which is initially supported on the ends 405-1, so as to guide this portion of the base 411 under the locking tabs 405.
  • the entire the base 411 of the lug 410 is then inserted into the housing 406 and is supported on the electrically conductive structure 450, thereby creating an electrical contact with this structure 450.
  • the elastic forces exerted by the shoe 404 and the locking tongues 405 on the base 41 then allow the lug 410 to be supported against the electrically conductive structure 450, that is to say, to lock the electrical contact. between base 411 and structure 450.
  • the third embodiment described above makes it possible to guarantee the electrical contact between the lug 410 and the structure 450, by simply tilting the lug 410 in the housing 406 and maintaining the lug 410 by means of the shoe 404 and at least one locking tongue 405.
  • This embodiment therefore has the advantage of ease and speed of assembly of the lug 410 on the electrically conductive structure 450. This assembly does not require specific tools and fixing means, thus avoiding any risk of presence of foreign conductive body in the device 400 electrical connection.
  • the lugs 210, 310, 410 have a base 211, 311, 411 of annular shape and that their respective supports 201, 301, 401 are shaped to the bases to allow their assembly.
  • the geometry of these lugs is however not limiting, the pods may for example have a base of a completely different shape (eg rectangular, triangular) and their respective supports have a geometry consistent to allow the assembly of these bases while remaining as close to the described embodiments.
  • the Figures 11 to 13 illustrate a device 500 of electrical connection according to a fourth embodiment of the invention.
  • the device 500 is centered around an axis X4 and is formed of a support 501 and a lug 510.
  • the support 501 is intended to be fixed on an electrically conductive structure 550, for example a metal surface of an aircraft.
  • the support 501 comprises a plate 502 having a first face 503 (lower face) intended to be in contact with the structure 550.
  • An electrically conductive pin 504 projects from a second face 505 (upper face) of the opposite plate 502. at the first side 503. As illustrated on the figure 13 , the pin 504 can be made in a hollow manner to allow a reduction in the mass of the support 501.
  • the plate 502 comprises attachment ears 506.
  • the fixing of the support 501 on the structure 550 is then carried out by means of immovable fixing elements 507, for example using rivets with countersunk or round heads, coming through the lugs 506 to fit into holes corresponding in the structure 550.
  • the plate 502 comprises three attachment ears 506 distributed around the pin 504.
  • the plate 502 here has a star shape with three branches, each branch comprising an ear 506.
  • the the area occupied by the plate 502 on the structure 550 is thus reduced, as is the mass of the support 501.
  • the support 501 may have a different shape and a different number of ears 506 of fixation.
  • the lug 510 is electrically conductive and comprises a tubular drum 511 elastically deformable having an end 512 shaped to engage on the pin 504 of the support 501.
  • the lug 510 and the pin 404 have an annular shape.
  • the lug 510 may have a different shape (eg oval, rectangular) and the pin 404 be shaped in the same shape to allow the lugging of the lug 510 on the support 501.
  • the lug 510 further comprises an eccentric lever 513 associated with the tubular shaft 511.
  • the eccentric lever 513 is configured to be able to exert a gripping force on the tubular shaft 511, more precisely on its end 512, so as to reduce its diameter relative to to an initial diameter, the tubular shaft 511 resuming its initial diameter in the absence of stress exerted by the lever.
  • the tubular shaft 511 may optionally, but not necessarily, include one or more slots in its walls.
  • the tubular shaft may comprise a slot 514 T-shaped extending circumferentially around the tubular shaft 511, only part of this slot being here illustrated.
  • the eccentric lever 513 is rotatable about an axis of rotation X5 perpendicular to the axis X4, the axis X5 of rotation may in another example not shown have a completely different direction, for example be parallel to the X4 axis.
  • the rotation of the eccentric lever 513 with respect to the axis X5 of rotation, in a first direction of rotation makes it possible to reduce by pinching the diameter of the tubular shaft 511.
  • the minimum diameter of the tubular shaft is then obtained 511 when the lever abuts against the tubular shaft 511, this first configuration corresponding to a "closed" state of the lever.
  • the tubular shaft 511 of the lug 510 allows electrical connection of the lug 510 with an electric cable 530 (shown in broken lines) by inserting an end 530a of the electric cable 530 through a hole 511-1 upper tubular shaft 511.
  • the walls of the tubular shaft 511 can be deformable to allow by crimping the walls an immobilization of the electric cable 530 engaged in the tubular shaft 511.
  • the eccentric lever 513 When the end 512 of the tubular drum 511 is fitted on the pin 504 of the support 501, the eccentric lever 513 is then rotated to its "closed” state, here a raised position illustrated on the figure 12 .
  • the closing of the lever decreases the diameter of the tubular shaft 511 which then engages the pin 504, thereby locking the electrical contact between the terminal 510 and the support 501.
  • the pin 504 may include a flange 504-1 protruding around its circumference.
  • the support 501 and the lug 510 may each comprise visual indicators so that a person in charge of their assembly can ensure the proper locking of the electrical contact between the lug 510 and the support 501.
  • the pin 504 may comprise circumferentially around its surface a colored ring 508 and the tubular shaft 511 comprise a pattern 515 on an outer face. A correct wadding of the end 512 of the tubular drum 511 on the pin 504 of the support 501 is then indicated by covering the ring 508, which is then no longer visible.
  • the good closure of the eccentric lever 513 is verifiable by the covering of the pattern 515 by the eccentric lever 513, the pattern then being no longer observable when the lever is in a locked state.
  • the non-observability of the visual indicators thus makes it possible to confirm a good locking of the electrical contact between the terminal 510 and the support 501. On the contrary, the observability of these indicators indicates a non-locking of the electrical contact between the terminal 510 and the support 501.
  • the fourth embodiment described above makes it possible to ensure good electrical contact of the terminal 510 with the support 501 by simply plugging the end 512 of the lug 510 onto the pin 504 of the support 501 and then rotating towards a state of closure of the eccentric lever 513.
  • Such an embodiment is particularly advantageous because it makes it possible to propose a removable lug 510 with respect to the support 501, assembled in a simple and fast manner. Furthermore, such an assembly does not require specific tools and fixing means thus eliminating any risk of presence of foreign conductive body in the device 500 of electrical connection.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP18194111.3A 2017-09-15 2018-09-12 Elektrische verbindungsvorrichtung Active EP3457499B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1758560A FR3071367B1 (fr) 2017-09-15 2017-09-15 Dispositif de liaison electrique dans un aeronef

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EP3457499A1 true EP3457499A1 (de) 2019-03-20
EP3457499B1 EP3457499B1 (de) 2021-03-10

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EP (1) EP3457499B1 (de)
FR (1) FR3071367B1 (de)

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FR3071367B1 (fr) * 2017-09-15 2020-11-13 Safran Electrical & Power Dispositif de liaison electrique dans un aeronef
CN112259971A (zh) * 2020-10-19 2021-01-22 珠海格力电器股份有限公司 一种电触结构和空气净化装置

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Also Published As

Publication number Publication date
EP3457499B1 (de) 2021-03-10
US10431910B2 (en) 2019-10-01
FR3071367B1 (fr) 2020-11-13
US20190089075A1 (en) 2019-03-21
FR3071367A1 (fr) 2019-03-22

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