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
  • 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
  • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient 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
  • 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
  • H01R11/03—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 characterised by the relationship between the connecting locations
  • H01R11/05—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 characterised by the relationship between the connecting locations the connecting locations having different types of direct 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
  • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
  • H01R12/50—Fixed connections
  • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
  • H01R12/63—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to another shape cable
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
  • H01R12/50—Fixed connections
  • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
  • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal

Definitions

• the present invention relates to the field of heating structures intended to equip a vehicle interior, for example automobile.
• the invention relates more particularly to an electrical connector for an electrically conductive strip belonging to such heating structures.
• the invention also relates to an assembly comprising an electrical connector and an electrically conductive strip intended to electrically supply a heating structure, such as a radiant panel. It also relates to a heating structure, such as a radiant panel, comprising such an assembly.
• US 3753204 A describes a solution for connecting two coaxial metal cables by means of an electrical conductor assembly involving a screw.
• the proposed solution is not appropriate when it comes to bringing two parts into mechanical and electrical contact, one of which is particularly thin, soft, flexible and substantially surface-based.
• a screw does not provide effective retention of the two parts in the two directions parallel to the plane formed by the substantially surface part.
• such a connector is particularly bulky and creates an extra thickness, which can adversely affect the haptics of the electrically conductive strip, in particular when it comes to integrating it into a heating structure such as a radiant panel. which must be as discreet as possible.
• the document FR 3099005 A1 describes a space-saving connector configured to make electrical contacts over the entire width of a flexible conductive strip with improved haptics.
• the connection is made by a plurality of point contacts via connecting teeth over at least 90% of the width of the conductive path, which ensures a good distribution of the electric current.
• the connecting teeth create crossings in the conductive strip by piercing the support layer and the conductive path of said strip, which weakens the conductive strip and leads to the risk of tearing the entire associated heating structure.
• Mention may also be made of flexible surface connection solutions made with individual contacts and designed to connect several low-power circuits at the same time.
• the electrical contact is made in a punctual manner, in particular by a clip which clamps a track of the printed circuit, or by flat wiring, or even by a small crimped contact.
• these connection solutions remain incompatible with high powers.
• One of the objectives of the present invention is therefore to remedy the drawbacks of the prior art by proposing a connector for an electrically conductive strip intended to equip a heating structure such as a radiant panel for a motor vehicle, which has a reduced size necessary to obtain good haptics, while guaranteeing solidity and robustness to the connector assembly - electrically conductive strip.
• the subject of the invention is an electrical connector for an electrically conductive strip extending along a longitudinal axis, the electrically conductive strip comprising:
• a support layer comprising a first face and a second face opposite the first face
• said electrical connector comprising a first and a second clamping parts secured to each other and defining a clamping area of the electrically conductive strip
• the first and second clamping parts being configured to clamp the electrically conductive strip and make electrical contact between said at least one electrically conductive track and at least one of the first or second clamping parts.
• this connector establishes a linear and continuous electrical contact by tightening an electrically conductive strip on each of its faces.
• the current is advantageously distributed over the width of an electrically conductive track of the strip.
• the electrical contact is ensured without it being necessary to cross the thickness of the support layer and the electrically conductive track. This limits the creation of zones of fragility and breakage of electrical current lines within the constituent materials of the electrically conductive strip.
• the support layer consists of a flexible material which can easily undergo tearing, such as a textile, and when the electrically conductive track consists of a particularly friable conductive ink.
• At least one of the first or second clamping parts comprises a contact portion with the support layer. According to one aspect of the invention:
• an electrically conductive track is arranged on the first face of the support layer
• the first clamping part comprises a contact portion with this electrically conductive track
• - the second clamping part comprises a contact portion with the support layer
• an electrically conductive track is arranged on the second face of the support layer
• the second clamping part comprises a contact portion with this electrically conductive track.
• the support layer comprises a first support layer on which is arranged a first electrically conductive track and a second support layer on which is arranged a second electrically conductive track.
• the first and second electrically conductive tracks then form a unitary assembly made in one piece.
• an additional layer is placed between the first support layer and the second support layer.
• the additional layer 6 has a greater rigidity than that of the first and second support layers 31a, 31b.
• the assembly formed by the first and second clamping parts in the shape of a hairpin comprising a plurality of sets of first and second clamping parts, the plurality of pins defining a plurality of contact portions with the at least one electrically conductive track, these contact portions being regularly distributed over the width of the electrically conductive strip.
• the width of the electrically conductive strip is defined parallel to the extension plane of this strip and perpendicular to the longitudinal axis.
• At least one of the first or second clamping parts has the shape of a substantially parallelepipedic flexible blade, and at least one of the first or second clamping parts has an edge intended to face the electrically conductive strip parallel to the axis longitudinal, this edge having a substantially curved profile over at least part of the length of the blade.
• the first part and the second clamping part each have an edge intended to face the electrically conductive strip parallel to the longitudinal axis, this edge having a substantially curved profile over at least a part of the length of the blade.
• the first clamping part has an edge intended to face the electrically conductive strip parallel to the longitudinal axis, this edge having a curved profile over at least part of the length of the blade associated with this first part, and
• the second clamping part has an edge intended to face the electrically conductive strip parallel to the longitudinal axis, this edge having a substantially flat profile over the entire length of the blade associated with this second part.
• the assembly formed by the first and second clamping parts has the shape of a clamp or a jaw.
• At least one of the contact portions comprises a projection projecting towards the clamping zone and able to deform elastically during insertion or withdrawal of the electrically conductive strip in or out of the clamping area.
• the first and second clamping parts comprise a plurality of contact portions configured to be distributed over the length of the electrically conductive strip, each of these contact portions comprising a projection projecting towards the clamping zone and able to deform elastically during insertion or withdrawal of the electrically conductive strip in or out of the clamping zone.
• each of these contact portions comprising a projection projecting towards the clamping zone and able to deform elastically during insertion or withdrawal of the electrically conductive strip in or out of the clamping zone.
• the bosses are preferably regularly distributed over the length of each clamping part, this length being measured along the axis longitudinal. It is advantageous to arrange each boss of a contact portion of the first clamping part facing a boss of a contact portion of the second clamping part, so as to better distribute the clamping forces exerted on the electrically conductive tape.
• the result of these bosses is an alternation of convex and concave portions along each clamping part, as well as a separation from one another of the first and second clamping parts outside the clamping zone.
• the assembly formed by the first and second clamping parts has a flared profile observed in a plane perpendicular to the plane of extension of the electrically conductive strip and passing through the longitudinal axis. This flared profile facilitates the insertion of the electrically conductive strip when inserting it into the clamping area.
• the boss(es) define contact portions each having a substantially rectilinear or substantially curvilinear profile over the width of the electrically conductive strip.
• the first and/or second clamping parts cover at least 90% of the width of the associated electrically conductive track, preferably 100% of its width.
• This configuration allows a better distribution of the electric current over the width of the conductive path. The risks of formation of hot spots are also reduced.
• the first and second clamping parts are configured to grip an edge of the electrically conductive strip.
• the first and second clamping parts are connected by a junction portion comprising an elastic return means configured to hold the first and second clamping parts in a constrained position for clamping the band electrically conductive.
• the elastic return means may comprise a coil spring. The opposite ends of the spring are attached respectively to the first part and the second clamping part.
• the first and second clamping parts are made of an electrically conductive material, such as for example copper, aluminum or any alloy making it possible to guarantee effective clamping, good conductivity, good ductility, as well as good resistance to chemical and/or electrical corrosion.
• the alloy can be based on copper, aluminum, tin, lead, chromium.
• the first clamping part is made of an electrically conductive material while the second clamping part is made of an electrically insulating material, such as a thermoplastic material for example.
• the first clamping part can be at least partially embedded in the electrical insulating material constituting the second clamping part. It is possible to overmold the first and second clamping parts.
• the second clamping part comprises a first holding portion and a second holding portion integral with each other, the first holding portion being configured to be in contact with the second face of the diaper. support, and the second holding portion being configured to hold the first part in contact with the electrically conductive track arranged on the first face of the support layer. It would be equivalent to arrange the electrically conductive track on the second face of the support layer and to maintain the first clamping part in contact with the electrically conductive track using one of the retaining portions as described above.
• the first clamping part is for example at least partially embedded in the electrical insulating material constituting the second portion of maintenance.
• the connector may comprise an additional part made of electrically conductive material intended to come into contact with an electrically conductive track arranged on the second face of the support layer, the electrically conductive track being for example connected to the electrically conductive track arranged on the first face of the support layer.
• the additional part made of electrically conductive material is for example at least partially embedded in the electrical insulating material constituting the first retaining portion.
• the electrical connector comprises a connecting member protruding from one of the edges of the first part and/or of the second clamping part, said connecting member being configured to ensure the connection to the power supply network, for example of a motor vehicle.
• the connecting member may be integral with the first clamping part and/or second clamping part.
• the present invention also relates to an assembly for a heating structure intended to be installed inside a vehicle passenger compartment, this assembly comprising: - an electrically conductive strip comprising a support layer comprising a first face and a second opposite face to the first face and at least one electrically conductive track arranged on the first face and/or the second face of the support layer,
• an additional layer is placed between the support layer and one of the first or second clamping parts in contact with the support layer, said additional layer having a rigidity greater than that of the support layer.
• the additional layer has the function of locally stiffening the strip electrically conductive over at least the strip area in contact with the connector.
• this additional layer attenuates the movements of the electrically conductive strip and limits the risks of breakage and cracking of the strip.
• This additional layer is made of an electrically insulating material, for example thermoplastic or textile material with greater rigidity than that of the textile of the support layer.
• This additional layer extends over at least part of the length of the electrically conductive track. Preferably, it extends over a length of the electrically conductive track corresponding at least to the length of the connector measured parallel to the longitudinal axis when said connector is connected to the electrically conductive strip.
• this additional layer protrudes from the leading edge of the connector, this leading edge being defined perpendicular to the longitudinal axis and facing the electrically conductive track.
• this assembly comprises an electrically conductive track arranged on the first face of the support layer and an electrically conductive track arranged on the second face of the support layer, said tracks being connected to one to the other.
• Said electrically conductive tracks form, for example, a unitary assembly.
• the electrically conductive strip is a conductive strip for a heating structure, for example a surface radiant panel intended to be installed in a passenger compartment, in particular of a motor vehicle.
• the present invention also relates to a heating structure, such as a radiant panel intended to be installed inside a passenger compartment. motor vehicle, this heating structure comprising an assembly for a heating structure as described previously.
• the heating structure further comprises a resistive layer arranged to produce a heat release when this layer is traversed by an electric current, this heating structure further comprising a network of electrodes comprising a plurality contact electrodes (or secondary electrodes) arranged to be in electrical contact with the resistive layer to cause electrical current to flow through this resistive layer.
• the network of electrodes comprises distribution electrodes (called main electrodes) arranged to conduct electric current from an electric source to the contact electrodes, several contact electrodes being connected to the same distribution electrode.
• main electrodes distribution electrodes
• At least one of said distribution electrodes comprises said electrically conductive track arranged on the first face and/or the second face of the support layer.
• a first distribution electrode comprises an electrically conductive track arranged on the first face of the support layer and a second distribution electrode comprises an electrically conductive track arranged on the second face of the support layer.
• the same distribution electrode comprises both an electrically conductive track arranged on the first face of the support layer and a second electrically conductive track arranged on the second face of the support layer, the two tracks being able to be connected between them.
• the resistive layer associated with the group of contact electrodes is a continuous layer, or alternatively comprises a plurality of discrete resistive elements forming this layer.
• the resistive layer is carried by the support layer of the electrically conductive strip.
• the resistive layer can be deposited on the support layer by screen printing.
• the resistive layer can be made of a partially resistive conductive material, for example paint comprising carbon particles and/or metallic particles.
• Figure 1 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to a first embodiment.
• Figure 2 is a schematic representation in top view of the electrically conductive strip and the electrical connector of Figure 1.
• Figure 3 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to a variant of the first embodiment of Figure 1.
• Figure 4 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to another variant of the first embodiment of Figure 1.
• Figure 5 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to another variant of the first embodiment of Figure 1.
• Figure 6 is a schematic representation in top view of the electrical connector of Figure 4.
• Figure 7 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to a second embodiment.
• Figure 8 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to a variant of the second embodiment.
• Figure 9 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to a variant of the second embodiment.
• Figure 10 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to a variant of the second embodiment.
• Figure 11 is a schematic representation in side view of an electrically conductive strip and an electrical connector according to one embodiment of the invention.
• characteristics, variants and different embodiments of the invention may be associated with each other, in various combinations, insofar as they are not incompatible or exclusive of each other.
• variants of the invention comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from to the state of the prior art.
• Figure 1 illustrates a side view of an electrically conductive strip 2 and an electrical connector 1.
• the electrically conductive strip 2 extends along a longitudinal axis A (visible in particular in Figure 2) and comprises:
• a support layer 3 comprising a first face 3a and a second face 3b opposite the first face
• the support layer 3 can be made of an electrically non-conductive material.
• the support layer 3 can be made of flexible material, capable of taking on a predetermined shape by deformation, this support being in particular extensible.
• the material of the support can be chosen in a non-limiting way from: a thermoplastic material, a non-woven textile, a fabric, or even an extensible textile or an extensible knit.
• the stretchable nature can be obtained either by the arrangement of the woven structure, namely by the weaving technique, or by the intrinsic stretchable nature of the yarns used for the weaving.
• the nonwoven fabric may comprise a mixture of polypropylene fibers and/or polyester fibers. Other fibers can be used, for example natural fibers.
• this material is preferably chosen from the following list: a polycarbonate and/or a polyethylene terephthalate and/or a polymethyl methacrylate and/or a polybutylene terephthalate and/or a polyamide material and/or a polyolefin and/or a copolymer material and/or an elastomeric material.
• an electrically conductive strip comprising a soft and flexible support layer conforms more easily, by complementarity of shapes, to the contours of cabin components, for example an armrest, a dashboard, a steering wheel or any other component likely to accommodate such an electrically conductive strip.
• the support layer 3 can have a thickness less than or equal to 2 mm.
• support layer 3 has a thickness comprised between 5 ⁇ m and 2 mm, preferably comprised between 50 ⁇ m and 2 mm.
• the electrically conductive strip 2 may be a conductive strip for a heating structure, such as a surface radiant panel, in order in particular to provide heating within a vehicle passenger compartment, in particular a motor vehicle.
• This electrically conductive strip 2 can in particular be configured to reach high power levels, that is to say for example greater than or equal to 500 W/m 2 .
• the electrically conductive strip 2 can in particular be configured to withstand currents of the order of 15 A and a voltage of the order of 12 V, or even 48 V, depending on the supply voltage within the motor vehicle.
• an electrically conductive track 4a is advantageously used consisting of an electrically conductive ink placed on the first face 3a of the support layer 3.
• This electrically conductive track is commonly called the main electrode. (or busbar, usual term in English), and it is intended to supply electric current to the electrically conductive strip 2.
• the electrically conductive ink can be charged with conductive particles, in particular with particles of silver, copper and/or an alloy such as nichrome.
• the electrically conductive track 4a can be deposited on the support layer 3, in particular by screen printing or electrodeposition. It may have a thickness less than or equal to 200 miti, in particular less than or equal to 60 miti.
• the electrical connector 1 comprises a first and a second clamping part (respectively 11 and 12) integral with one another and defining a clamping zone 15 of the electrically conductive strip 2.
• the first clamping part 11 comprises a contact portion 21 with the electrically conductive track 4a
• the second clamping part 12 comprises a contact portion 22 with the support layer 3.
• the first clamping part 11 and the second clamping part 12 are made of an electrically conductive material, for example copper, aluminum or any alloy making it possible to guarantee effective clamping, good conductivity, good ductility, as well as good resistance to chemical and/or electrical corrosion.
• the first and second clamping parts 11, 12 are made in one piece.
• the first and second clamping parts 11, 12 are configured to clamp the electrically conductive strip 2 and make electrical contact between the electrically conductive track 4a and the first clamping part 11.
• the electrical connector 1 comprises a connecting member 30 projecting from one edge of the first part 11 and second part 12 of clamping.
• This connecting member 30 is configured to ensure connection to the electrical power supply network, for example of a motor vehicle.
• This connecting member 30 makes it possible to make the electrical connection with, for example, an electric wire 24 directly crimped onto this connecting member.
• This also makes it possible to connect the electrical connector 1 to an additional plug, for example crimped onto a wire, a tab metal or electrical cable.
• the connecting member 30 is integral with the first clamping part 11 and the second clamping part 12.
• a plastic casing (not shown) can be added to provide electrical insulation.
• the electrical connector 1 is preferably made in one piece, for example by stamping or by cutting.
• the first and second clamping parts 11, 12, as well as the connecting member 30 can thus all be formed during the same manufacturing step.
• the first part 11 has the shape of a substantially parallelepipedal flexible strip.
• the second part 12 (not visible in Figure 2) also has this shape.
• the first and second clamping parts 11, 12 are configured to grip an edge 103 of the electrically conductive strip 2.
• the first clamping part 11 covers the entire width of the electrically conductive track 4a.
• the electric current is better distributed over the width of the electrically conductive track and the risks of formation of hot spots are reduced.
• the first and second clamping parts (respectively 11 and 12), blade-shaped, each have an edge (respectively 101 and 102) facing the electrically conductive strip 2 , parallel to the longitudinal axis A.
• Each of these edges 101, 102 has a substantially curved profile over part of the length of each flexible blade when observing the connector in the plane of Figure 4.
• an additional electrically conductive track 4b is arranged on the second face 3b of the support layer 3.
• the second clamping part 12 comprises a contact portion 22 with this electrically conductive track 4b.
• the two electrically conductive tracks 4a, 4b make it possible to ensure a double electrical contact via the electrical connector 1 by involving the first and second faces 3a, 3b of the support layer 3.
• the electrically conductive tracks 4a, 4b be arranged to be in electrical contact with each other.
• this electrical contact can be ensured by means of a secondary electrically conductive track arranged at a distance from the electrical connector 1, or more generally by any suitable electrically conductive element.
• Figure 11 illustrates an alternative way of obtaining an assembly for a heating structure comprising an electrically conductive strip 2 and an electrical connector 1 whose first and second clamping parts 11, 12 define a clamping zone 15 of this strip, and in which the electrically conductive strip 2 comprises a support layer 3 and a set of electrically conductive tracks 4a, 4b arranged respectively on a first face 3a and a second face 3b, opposite the first face 3a, of the support layer 3.
• the support layer 3 comprises a first support layer 31a and a second support layer 31b which are integral with each other and arranged facing each other.
• This particular arrangement of the electrically conductive tracks 4a, 4b is for example obtained at the end of a step of folding an electrically conductive strip 2 comprising a support layer 3 on which is arranged an electrically conductive track.
• the folding direction of said strip must be chosen such that the electrically conductive tracks 4a, 4b are arranged after folding the electrically conductive strip 2 on the outermost faces (ie. the first and second faces 3a, 3b visible in Figure 11) of the support layer 3.
• the folding can be carried out as needed depending on the width or the length of the electrically conductive strip 2. In the example of Figure 11, the folding of the electrically conductive strip 2 has been carried out perpendicular to the longitudinal axis A. The electrically conductive strip 2 is therefore folded along its width.
• the folding step as previously described makes it possible to obtain a support layer 3 comprising a first support layer 31a on which is arranged a first electrically conductive track 4a, and a second support layer 31b on which is arranged a second electrically conductive track 4b.
• the electrically conductive tracks 4a, 4b form a unitary assembly made in one piece.
• the electrical connector 1 comprises a first clamping part 11 and a second clamping part 12 integral with each other and defining a clamping zone 15 of the strip electrically conductive 2.
• the first part and second clamping parts 11, 12 of electrically conductive material enclose the electrically conductive strip 2 and are respectively in electrical contact with the electrically conductive track 4a and the electrically conductive track 4b.
• the additional layer 6 is arranged between the first support layer 31a and the second support layer 31b.
• the additional layer 6 has a greater rigidity than that of the first and second support layers 31a, 31b. This advantageously limits the risks of formation of cracks and tears in the electrically conductive strip when fitting the electrical connector.
• the additional layer 6 can take the form of a mechanical reinforcement plastic film. It can also be an integral part of a plastic part coming from a holding box outside the assembly formed by the electrical connector 1 and the electrically conductive strip 2.
• the additional layer 6 has a thickness of less than 200 ⁇ m.
• the additional layer 6 is for example fixed by gluing on the support layer 3, or overmolded.
• Figure 5 illustrates a variant of the embodiment of Figure 1, according to which:
• the first clamping part 11 has an edge 101 intended to face the strip electrically conductive 2 parallel to the longitudinal axis A, this edge having a curved profile over at least part of the length of the blade associated with this first part 11, and
• the second clamping part 12 has an edge 102 intended to face the electrically conductive strip 2 parallel to the longitudinal axis A, this edge having a substantially flat profile over the entire length of the blade associated with this second part 12.
• the first clamping part 11 comprises a plurality of contact portions 21 and the second clamping part 12 comprises a plurality of contact portions 22.
• These contact portions 21, 22 are distributed over the length of the electrically conductive strip.
• Each of these contact portions comprises a projection projecting towards the clamping zone 15 and able to deform elastically during the insertion or withdrawal of the electrically conductive strip 2 in or out of the clamping zone 15.
• each bosses are regularly distributed over the length of each first and second clamping part, the length being measured along the longitudinal axis A. It is advantageous to have each boss a contact portion of the first part clamp facing a boss of a contact portion of the second clamping part, so as to better distribute the clamping forces exerted on the electrically conductive strip 2.
• the result of these bosses is an alternation of convex and concave portions along each clamping part of the connector, as well as a separation from each other of the first and second clamping parts 11, 12 out of the clamping zone which is particularly visible in Figure 4.
• the assembly formed by the first and second clamping parts 11, 12 has a flared profile observed in a plane perpendicular to the plane of extension of the electrically conductive strip 2 and passing through the longitudinal axis A. This flared profile facilitates the insertion of the electrically conductive strip 2 in the clamping area 15.
• FIG. 6 which is a representation in top view of the electrical connector 1 of FIG. 4, the bosses define two contact portions 21 having a substantially curvilinear profile and a contact portion 21 which is substantially rectilinear over the width of the electrically conductive strip 2.
• the curvilinear shape of the contact portions makes it possible not to create current break lines. This shape also reduces the risk of tearing the electrically conductive strip.
• FIG. 7 schematically represents a side view of an electrically conductive strip 2 and of an electrical connector 1 according to a second embodiment of the invention.
• the first clamping part 11 is made of an electrically conductive material, for example aluminum
• the second clamping part 12 is made of an electrically insulating material, such as for example a thermoplastic material.
• the first part 11 of clamping is here partially embedded in the electrical insulating material constituting the second part 12 of clamping.
• the end of the first clamping part 11 which is not in contact with the electrically conductive track 4a is embedded in the electrical insulating material.
• the two clamping parts can be overmoulded.
• the second clamping part 12 comprises a first holding portion 12a and a second holding portion 12b integral with each other.
• the first retaining portion 12a is in contact with the second face 3b of the support layer 3, and the second retaining portion 12b maintains the first clamping part 11 in contact with the electrically track 4a disposed on the first face 3a of the layer. support 3.
• the first clamping part 11 in particular one of its ends which is not in contact with the electrically conductive track 4a, is partially embedded in the electrically insulating material constituting the second holding portion 12b.
• the electrical connector 1 of the assembly shown in Figure 8 comprises an additional part 7 of electrically conductive material coming into contact with an electrically conductive track 4b arranged on the second face 3b of the support layer 3.
• the electrically conductive track 4b is connected to the electrically conductive track 4a arranged on the first face of 3a of the support layer 3.
• the additional part 7 made of electrically conductive material is partially embedded in the constituent electrical insulating material of the first holding portion 12a.
• the electrically conductive tracks 4a, 4b here form a unitary assembly.
• an edge of the support layer 3 is covered by an electrically conductive track portion.
• the unitary set of electrically conductive tracks 4a, 4b forms a fold which covers said border.
• the set of electrically conductive tracks 4a, 4b can be held around the support layer by means of a clamping ring (not shown).
• the additional layer 6 has a greater rigidity than that of the support layer 3. It is for example made of an electrically insulating material, for example of thermoplastic or rigid textile material.
• the additional layer 6 also has the function of stiffening the electrically conductive track.
• the additional layer 6 is for example fixed by gluing on the support layer 3, or overmoulded. It will be sought to limit the thickness of the additional layer 6 so as not to deteriorate the haptics of the electrically conductive strip 2. For example, the additional layer has a thickness of less than 200 ⁇ m.
• the additional layer may extend over at least part of the length of the electrically conductive track. Preferably, it extends over a length of the electrically conductive track corresponding at least to the length of the electrical connector measured parallel to the longitudinal axis A when the connector is connected to the electrically conductive strip. Preferably again, this additional layer protrudes from the leading edge 104 of the connector, this leading edge being defined perpendicular to the longitudinal axis A and facing the electrically conductive track.

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• 2021
  • 2021-02-24 FR FR2101777A patent/FR3120164B1/fr active Active
• 2022
  • 2022-02-21 US US18/547,788 patent/US20240128662A1/en active Pending
  • 2022-02-21 WO PCT/EP2022/054292 patent/WO2022179991A1/fr active Application Filing
  • 2022-02-21 CN CN202280015481.6A patent/CN116868447A/zh active Pending
  • 2022-02-21 EP EP22711905.4A patent/EP4298696A1/de active Pending
  • 2022-02-21 JP JP2023551260A patent/JP2024509399A/ja active Pending

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