Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K3/00—Apparatus or processes for manufacturing printed circuits
  • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
  • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K1/00—Printed circuits
  • H05K1/02—Details
  • H05K1/11—Printed elements for providing electric connections to or between printed circuits
• • 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
  • H01R12/51—Fixed connections for rigid printed circuits or like structures
  • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
  • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
• • 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
  • H01R12/51—Fixed connections for rigid printed circuits or like structures
  • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
  • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
  • H02K11/30—Structural association with control circuits or drive circuits
  • H02K11/33—Drive circuits, e.g. power electronics
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/32—Windings characterised by the shape, form or construction of the insulation
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
  • H02K5/225—Terminal boxes or connection arrangements
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K1/00—Printed circuits
  • H05K1/18—Printed circuits structurally associated with non-printed electric components
  • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
• • 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
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/09—Shape and layout
  • H05K2201/09009—Substrate related
  • H05K2201/09063—Holes or slots in insulating substrate not used for electrical connections
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
  • H05K2201/10007—Types of components
  • H05K2201/1009—Electromotor
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
  • H05K2201/10227—Other objects, e.g. metallic pieces
  • H05K2201/10295—Metallic connector elements partly mounted in a hole of the PCB
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
  • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
  • H05K2201/10954—Other details of electrical connections
  • H05K2201/10962—Component not directly connected to the PCB

Definitions

• the invention relates to a mechanical electrical contact component making it possible to establish electrical contact between a printed circuit on an electronic card and a stator part such as a stator winding of a motor, particularly of a motorcycle unit. -fan for heating, ventilation and/or air conditioning installation of a motor vehicle.
• the present description also relates to a control module comprising a printed circuit board and at least one such mechanical contact component fixed on the printed circuit board.
• the invention also relates to a motor-fan unit, in particular for a heating, ventilation and/or air conditioning installation of a motor vehicle, comprising such a control module.
• a printed circuit card to control a device.
• a motor of a motor-fan unit for a heating, ventilation and/or air conditioning installation of a motor vehicle includes such a card to control the rotation of the motor of the motor-fan unit.
• the electronic control circuit is in contact with a stator part of the motor, in particular the stator coils, for example three in number.
• this contact is made by means of electrical terminals or electrical contact blades, extending for example perpendicular to the printed circuit board.
• electrical terminals are connected to the printed circuit board via a mechanical electrical contact component (called “leadframe” in English, sometimes translated into French as “conductor-beam” or “connection grid” or even “ connection frame”).
• Such a mechanical electrical contact component is generally formed from a metal plate cut and folded to form a flexible part having a portion intended to be fixed to an electrical terminal or an electrical contact blade, and a plurality of fixing lugs intended to be inserted into holes passing through the printed circuit board.
• the shape of the component can be complex to produce and relatively bulky, which requires corresponding space on the electronic card.
• a constant objective is to minimize the size and in particular to reduce the size of the electronic card to facilitate its integration into the motor-fan group, while making it possible to increase the transmitted power and reduce current consumption.
• the fixing lugs generally take the form of thin rods.
• the fixing lugs thus aim to ensure electrical contact of the mechanical component with a printed circuit on the electronic card.
• These tabs can be soldered to the printed circuit board, in particular by wave soldering.
• the mounting solder must extend all the way around each mounting tab. To do this, all faces of each mounting bracket must be covered with a layer of tin.
• each mechanical electrical contact component must generally be bathed in a tin bath after its shaping. This step is expensive.
• the component when transporting the electronic card to a welding zone, the component must be held in position to prevent it from falling before welding.
• the component includes additional positioning lugs intended to grip the electronic card.
• this adds a step in the process of assembling the component on the electronic card.
• the present invention aims to provide a mechanical electrical contact component that does not have one or more of the disadvantages of known mechanical electrical contact components.
• the subject of the invention is a mechanical electrical contact component, made of an electrically conductive material, configured to be fixed on an electronic card so as to place a printed circuit on the electronic card in electrical contact with an electrical terminal, in particular of a stator part of an electric motor of a motor-fan unit of a heating, ventilation and/or air conditioning installation of a motor vehicle, said component being configured to be fixed to the card electronic on the one hand, and the electrical terminal on the other hand.
• said component comprises a portion for fixing to the electronic card, configured to be inserted and soldered in a complementary orifice of the electronic card.
• said component comprises at least two support tabs configured to come to bear against the electronic card and arranged on one side of said component opposite to said fixing portion in a plane normal to the electronic card extending between the support tabs and said fixing portion when said component is mounted on the electronic card.
• Such a component is smaller and takes up less space on the electronic card than previous solutions while making it possible to pass the same power or even more than in previous solutions.
• the portion for fixing to the electronic card, through allows the component to be positioned on the electronic card before soldering, and the support tabs come to bear against the electronic card, preventing the component from tilting, for example when transporting the electronic card to a soldering zone or stopping transport, without requiring other positioning elements such as additional positioning tabs intended to grip the electronic card.
• Said component may also include one or more of the following characteristics described below, taken separately or in combination.
• the portion for fixing to the electronic card can be configured to be inserted along an insertion axis and the component comprises at least one axial stopping element configured to form a stop against the electronic card along the insertion axis .
• the component comprises at least two shoulders on either side of the portion for fixing to the electronic card.
• the two shoulders can be arranged opposite the two support legs.
• the portion for fixing to the electronic card is intended to be welded in a complementary orifice on a central zone of the electronic card.
• the portion for fixing to the electronic card, with the shoulder or shoulders, may be intended to be closer to the center of the electronic card than the support tabs.
• the electronic card may be intended to be transported for example to a welding zone, in a transport direction from back to front.
• the support tabs may be intended to be located closer to the front periphery of the electronic card depending on the direction of transport, than the fixing portion to the electronic card.
• the portion for fixing to the electronic card may have an elongated cross section. It is, for example, rectangular in shape.
• the portion for fixing to the electronic card can form a large single fixing portion intended to be inserted into a single complementary orifice of the electronic card, for example of oblong shape, which makes it possible to have a sufficient section to transmit energy while reducing the bulk on the electronic card compared to a solution having several fixing pins of smaller section and which must be spaced from each other.
• Said component may comprise at least one connecting element connecting the fixing portion to the electronic card and the support tabs.
• the connecting element is for example made in the form of a tongue.
• the connecting element can extend along a plane normal to the portion for fixing to the electronic card.
• the support legs respectively have a first branch connected to the connecting element and a second branch folded relative to the first branch, so as to form a support foot configured to be arranged flat against the electronic card.
• the support feet can come to rest against the electronic card.
• the first branches of the support tabs extend for example parallel to the portion for fixing to the electronic card of the component.
• the second branches of the support legs can be bent at 90° relative to the first portions.
• the second branches of the support legs can extend parallel to the connecting element.
• Said component may include one or more folds.
• At least one fold can connect the connecting element to the fixing portion to the electronic card.
• At least one fold can connect the connecting element to another fixing portion to the electrical terminal.
• At least one fold can connect the connecting element to at least one support tab.
• the component can thus be at least as flexible as in previous solutions, so as to reduce the transmission of vibrations from the electrical terminal of the stator part to the electronic card and limit the risk of damaging the electronic card.
• the component has a simple shape to manufacture without requiring a multitude of bends to obtain this flexibility.
• the fold(s) are for example made in the form of at least one bent portion.
• the fold(s) are for example made in the form of at least one “U” shaped portion.
• At least one “U”-shaped portion can connect the connecting element and the fixing portion to the electrical terminal by extending at least partly between the support tabs, said component comprising a recess between each support leg and the “U” portion.
• the portion for fixing to the electrical terminal and the connecting element extend for example along two respective planes inclined relative to each other forming an angle greater than or equal to 100° and less than or equal to 120°.
• the invention also relates to a control module, in particular for a motor-fan unit of a heating, ventilation and/or air conditioning installation of a motor vehicle, the control module comprising an electronic card having a printed circuit and at least one mechanical electrical contact component, as defined above, fixed on the electronic card.
• the portion for fixing to the electronic card is for example welded in a complementary orifice on a central zone of the electronic card, being in electrical contact with a track of the printed circuit.
• the mechanical electrical contact component(s) are therefore oriented towards the inside of the electronic card.
• the central zone is called a dead zone, that is to say devoid of power components. This makes it possible to offer more copper surfaces around the periphery of the electronic card and therefore more power.
• the electronic card carries at least three mechanical electrical contact components, each intended to be connected to a respective phase of a brushless motor.
• the invention also relates to a motor-fan group in particular for heating, ventilation and/or air conditioning installation of a motor vehicle.
• the motor-fan group comprises an electric motor with a stator part, a control module as described above, and at least one electrical terminal arranged in electrical contact with the stator part on the one hand, and with the mechanical component of electrical contact on the other hand.
• the portion for fixing to the electrical terminal is for example welded to the electrical terminal.
• the electric motor is a brushless motor.
• the stator part of the motor comprises a stator and for example at least one stator winding.
• the electrical terminal can be arranged in electrical contact with a stator winding.
• FIG. 1 shows an example of a motor-fan unit according to the invention.
• FIG. 2 shows a motor support of the motor-fan group of Figure 1 on which is fixed a control module comprising an electronic card carrying mechanical electrical contact components.
• FIG. 3 is a perspective view of a mechanical electrical contact component before assembly on the electronic card.
• FIG. 4 is an enlarged view of Figure 2 showing in more detail two mechanical electrical contact components assembled on the electronic card.
• FIG. 5 is a side view of said component.
• FIG. 6 is a top view of said component.
• certain elements can be indexed, for example first element or second element. In this case, it is a simple indexing to differentiate and name close but not identical elements. This indexing does not imply a priority of one element over another and such denominations can easily be interchanged without departing from the scope of the present invention. This indexing does not imply an order in time either.
• FIG 1 illustrates a motor-fan group 1, in particular for a heating, ventilation and/or air conditioning installation for a vehicle.
• the motor-fan group 1 (or ventilation device) comprises in particular a fan wheel 3, an electric motor 5, and a support 7 of the motor 5, hereinafter called motor support 7.
• the fan wheel 3 rotates around an axis of rotation A.
• the motor 5 is intended to drive the fan wheel 3 in rotation around its axis A.
• the motor 5 includes a rotor and a stator part (not visible in the figures).
• the rotor is for example an external rotor.
• the rotor may have the shape of a cup attached to a motor shaft. Fan wheel 3 can be attached directly to the motor shaft.
• the rotor may include magnets, for example fixed on an internal face of the cup.
• the stator part can be internal, that is to say placed inside the rotor.
• the stator part comprises a stator and for example at least one stator winding, in particular three stator windings.
• the rotor magnets can be arranged radially outward relative to the stator windings.
• the term radially means relative to the axis of rotation A.
• the motor support 7 is intended to allow the fixing of the motor-fan unit 1 in a vehicle, in particular an automobile.
• the motor support 7, better visible in Figure 2 may in particular comprise two rings, an internal ring 7A and an external ring 7B.
• the two rings 7A, 7B can be coaxial around an axis coinciding for example with the axis A of rotation of the fan wheel 3.
• the rings 7A, 7B can be connected together by elastomeric material.
• the elastomeric material can form a decoupling ring 9 between the internal ring 7 A and the external ring 7B.
• the elastomeric material is for example polystyrene-b-poly(ethylene-butylene)-b-polystyrene or SEBS. This makes it possible to limit the transmission of vibrations generated by the motor 5 and/or the fan wheel 3 in the vehicle and/or external stresses towards the motor 5 and/or the fan wheel 3.
• the internal ring 7A may be intended to be fixed to the motor 5.
• the external ring 7B may be intended to be fixed, directly or indirectly, to a structural element, in particular a heating, ventilation and/or installation. vehicle air conditioning.
• the engine support 7 comprises a peripheral air deflector 11 to which the external ring 7B is fixed.
• the air deflector 11 may be intended to be fixed to the structural element.
• the motor support 7 advantageously carries a control module 13 of the motor 5.
• a support part such as a heat sink 15 can be fixed to at least one of the rings, for example the internal ring 7A and carry the control module 7.
• the heat sink 15 may have a recess defining a location for receiving the control module 13.
• the recess may be surrounded by a projecting rim.
• a cover 17 can be fixed on the engine support 7 so as to cover the control module 13.
• the fixing can be implemented by any appropriate means, for example in a non-automatic manner. limited by screwing.
• the cover 17 thus defines with the recess on the heat sink 15, a housing for receiving the control module 13.
• the control module 13 comprises an electronic card 19 ( Figure 2) presenting a printed circuit.
• the control module 13 may also include at least one connector electrically connected to the electronic card 19.
• This connector 21 allows the electrical supply of the electronic card 19 and, consequently, of the motor 5, when it is connected to an electrical harness in particular of the vehicle.
• the stator windings can create a magnetic field causing the rotation of the rotor and consequently of the fan wheel 3.
• the electronic card 19 carries one or more components. These may be electronic and/or mechanical and/or mechatronic components.
• at least one mechanical electrical contact component 23 is fixed on the electronic card.
• three mechanical electrical contact components 23 can be provided, each can be intended to be connected to a respective phase of the brushless motor 5.
• a minimum distance must be provided between two mechanical electrical contact components 23 in order to avoid electric arcs. This distance is adapted according to the power.
• Such mechanical electrical contact components 23 are called “leadframe” in English, sometimes translated into French as “connection grid” or “connection frame” or even “contact beam”.
• a component 23 or leadframe is made of an electrically conductive material and makes it possible to connect, put into electrical contact, an electrical terminal 25 arranged in electrical contact with the stator part of the motor 5, for example to a winding of the stator, to the electronic card 19, in particular to the printed circuit.
• the power supply of the stator windings can be done via the components 23 or leadframe and the electrical terminals 25, thus allowing the control of the motor 5.
• Such a component 23 or leadframe is described in more detail below with reference to Figures 3 to 6.
• the component 23 or leadframe is configured to be fixed to the electronic card 19.
• the component 23 or leadframe comprises a portion 27 for fixing to the electronic card 19, hereinafter called first fixing portion 27.
• first fixing portion 27 a portion 27 for fixing to the electronic card 19, hereinafter called first fixing portion 27.
• the component 23 or leadframe comprises a single first fixing portion 27.
• the first fixing portion 27 is for example planar or substantially planar.
• the first fixing portion 27 is intended to be inserted into a complementary orifice 191 provided on the electronic card 19. The first fixing portion 27 is therefore through.
• the first fixing portion 27 may have an elongated cross section.
• the first fixing portion 27 is for example rectangular in shape. It is for example made in the form of a tab.
• the complementary orifice 191 is advantageously provided on a central zone of the electronic card 19. It is more precisely a zone called a dead zone, that is to say it is devoid of electronic components power.
• the power components are preferably provided on the periphery or near the edges of the electronic card 19.
• the component 23 or leadframe is for its part arranged towards the inside of the electronic card 19. This offers more copper surfaces on the periphery and therefore more power.
• the shape of the orifice 191 is complementary to that of the first fixing portion 27.
• This orifice 191 can be elongated. Depending on the embodiment shown, it has an oblong or substantially oblong shape.
• the first fixing portion 27 can be inserted into the orifice 191 of the electronic card.
• the first fixing portion 27 can be unique and be inserted in a single complementary orifice 191 of the electronic card 19.
• the first portion 27 has a larger section compared to a solution having several fixing pins each of smaller section than the first fixing portion 27 and having to be spaced from each other. This makes it possible to increase the mechanical resistance of the component 23 or leadframe and to have a sufficient section to transmit energy while reducing the bulk on the electronic card 19.
• the first fixing portion 27 extends for example along a first plane PL It is advantageously a plane normal to the electronic card 19.
• the first fixing portion 27 may be intended to be inserted along an insertion axis B.
• the component 23 or leadframe comprises at least one stop which bears against the electronic card 19, when the first fixing portion 27 .
• Such a stop forms an axial stopping element, that is to say along the insertion axis B, which makes it possible to block the insertion movement.
• the component 23 or leadframe comprises at least two shoulders 29 on either side of the first fixing portion 27.
• the shoulder or shoulders 29 rest against the electronic card 19. They define a surface intended to be in contact with the electronic card 19, when the first fixing portion 27 is inserted through the electronic card 19.
• the first fixing portion 27 is intended to be welded in the complementary orifice 191 provided on the electronic card 19, so as to come into electrical contact with a track of the printed circuit. This can be done using a wave soldering process. Electrical contact between the electronic card 19 and the component 23 or leadframe is thus ensured.
• the component 23 or leadframe is configured to be fixed to the electrical terminal 25.
• H comprises for this purpose, a portion 31 for fixing to the electrical terminal 25, hereinafter called second fixing portion 31.
• This second fixing portion 31 can be intended to be welded to the electrical terminal 25.
• the component 23 or leadframe ensures the transmission of energy from the electronic card 19 to the stator, for example to create a magnetic field and rotate the rotor.
• the second fixing portion 31 can extend along a second plane P2 distinct from the first plane PL.
• the two planes Pl, P2, are inclined relative to each other.
• the second fixing portion 31 is for example rectangular in shape. It is for example made in the form of a tab.
• the second fixing portion 31 may have a width greater than that of the first fixing portion 27.
• the second fixing portion 31 advantageously has a boss 33.
• the boss 33 has for example a convex shape.
• the boss 33 or its convexity is intended to be oriented towards the electrical terminal 25 of the stator part.
• the boss 33 is in the example illustrated on one face of the second fixing portion 31 which is not oriented towards the first fixing portion 27. This boss 33 facilitates the bringing into electrical contact of the second fixing portion 31 with the electrical terminal 25.
• the second fixing portion 31 can be planar or substantially planar with the exception of the boss 33.
• the component 23 or leadframe further comprises at least two support tabs 35. These support tabs 35 are intended to come to bear against the electronic card 19 when the first fixing portion 27 is inserted into the orifice supplementary 191.
• the support tabs 35 can be arranged opposite the first fixing portion 27 and the possible shoulder(s) 29.
• the support tabs 35 on the one hand, and the first fixing portion 27 and the possible shoulder(s) 29 on the other hand, can be arranged on two opposite sides of the component 23 or leadframe. These are opposite sides along a plane P normal to the electronic card 19 extending between the support tabs 35 and the first fixing portion 27 when the component 23 or leadframe is mounted on the electronic card 19. It is This involves for example a plane P parallel to the first plane PL
• two shoulders 29 can be arranged opposite the two support legs 35.
• the first fixing portion 27 which is intended to be welded, can be inserted into the complementary orifice 191 of the electronic card and the support tabs 35 come into support against the electronic card 19. It is not necessary to provide other positioning elements such as additional positioning lugs intended to be inserted into or scratched onto the electronic card.
• the first fixing portion 27, with the possible shoulder or shoulders 29, can be intended to be closer to the center of the electronic card 19 than the support tabs 35.
• the electronic card 19 may be intended to be transported for example to a welding zone, in a direction of transport from the rear to the front, shown schematically by the arrow F.
• the support lugs 35 may be intended to be located closer to the front periphery of the electronic card 19 according to the direction of transport, than the first fixing portion 27.
• These support tabs 35 make it possible to limit, to prevent a tilting of the component 23 or leadframe, during the transport of the electronic card 19.
• the support tabs 35 make it possible to prevent a tilting of the component 23 or leadframe towards the front, or even to prevent it from falling, when the transport of the electronic card 19 stops.
• the support legs 35 are intended to come flat against the electronic card 19.
• the support legs 35 each have a first branch 351 and a second branch 352.
• the first branch 351 extends for example parallel to the first portion 27 for fixing the component 23 or leadframe.
• the second branch 352 is bent relative to the first branch 351, for example at 90°. This second branch 352 forms a support foot intended to be arranged flat, in flat support, against the electronic card 19.
• the support legs 35 and more particularly their second branches 352 forming support feet can be arranged behind, depending on the direction of transport, another orifice 192 provided on the electronic card 19 and intended to be crossed by a terminal electric 25.
• This other orifice 192 can be of elongated shape, for example oblong or substantially oblong.
• the component 23 or leadframe may comprise at least one connecting element 37 connecting the first fixing portion 27 and the support tabs 35. More precisely, the first branches 351 of the support tabs 35 are connected to the connecting element 37. This connecting element 37 can also connect the first fixing portion 27 and the second fixing portion 31.
• the connecting element 37 can extend along a third plane P3 distinct from the first plane PI and/or the second plane P2.
• This third plane P3 is inclined relative to the first plane PI and/or the second plane P2.
• the connecting element 37 can extend along a plane P3 normal to the first fixing portion 27.
• the third plane P3 can be inclined relative to the second plane P2 by an angle a which is for example greater than 90°.
• the angle a between these two planes P2, P3 is preferably between 100° and 120°.
• the second branches 352 of the support legs 35 can extend parallel to the connecting element 37.
• the connecting element 37 can be planar or substantially planar. H is for example made in the form of a tab.
• the connecting element 37 may have at least partly a rectangular shape.
• the connecting element 37 has a rectangular shape, on a first side connected to the first fixing portion 27.
• the shape of the connecting element 37 can optionally be widened from a second side opposite the first side along the plane P normal to the electronic card 19.
• the widened side of the connecting element 37 defines a contour approximating for example of a trapezoidal shape.
• the connecting element 37 may have at least in part a width similar to the width of the first fixing portion 27.
• the for example rectangular part of the connecting element 37 can be of the same width or substantially of the same width as the first fixing portion 27.
• the width of the rectangular part of the connecting element 37 may be less than that of the second fixing portion 31.
• component 23 or leadframe may include one or more folds giving it flexibility. This flexibility or elasticity of the component 23 or leadframe allows to limit the forces exerted on the first fixing portion 27. So vibrations can be filtered. In other words, this makes it possible to reduce the transmission of vibrations from the electrical terminal 25 to the electronic card 19, thus preventing the electronic card 19 from being damaged.
• the fold(s) are for example made in the form of at least one bent portion and/or at least one “U” shaped portion.
• At least one fold can be provided connecting the connecting element 37 to the first fixing portion 27.
• H may be a bent portion 39.
• the bent portion 39 is curved at a right angle.
• At least one fold can be provided connecting the connecting element 37 to the second fixing portion 31.
• H can be for example a “U” shaped portion 41.
• This “U” shaped portion 41 can extend at least partly between the support legs 35.
• the component 23 or leadframe comprises a recess 43 between each support tab 35 and the “U”-shaped portion 41.
• the “U”-shaped portion 41 may have a width similar to that of the first fixing portion 27 and/or the rectangular part of the connecting element 37.
• At least one fold may be provided connecting the connecting element 37 to a support tab 35. It may be a bent portion 45. According to the example illustrated, the bent portion 45 is curved at a right angle.
• component 23 or leadframe may have a constant or substantially constant thickness between all its different portions.
• such a component 23 or leadframe can be produced in a simple manner so as to optimize the space required on the electronic card 19 while allowing the transmission of energy, when it is soldered to the electronic card 19 and to the electrical terminal of the stator part.
• the first fixing portion 27 makes it possible to position the component 23 or leadframe on the electronic card 19 before soldering, and the support tabs 35 on the opposite side ensure the stability of the component 23 or leadframe, preventing the latter from does not tip or fall before welding.
• the first fixing portion 27 can be unique and larger than in previous solutions with several fixing pins of smaller section and having to be spaced from each other, which makes it possible to have a sufficient section to transmit energy while reducing the bulk on the electronic card 19.
• the shoulder or shoulders 29 make it possible to increase the stability of the component 23 or leadframe on the electronic card 19.
• component 23 or leadframe is at least as flexible as in previous solutions, which makes it possible to filter vibrations and avoid damaging the card.

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• Engineering & Computer Science (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Power Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Motor Or Generator Frames (AREA)

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Publications (1)

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• 2023
  • 2023-06-15 CN CN202380047560.XA patent/CN119343837A/zh active Pending
  • 2023-06-15 KR KR1020247041491A patent/KR20250011170A/ko active Pending
  • 2023-06-15 US US18/875,170 patent/US20250365864A1/en active Pending
  • 2023-06-15 WO PCT/EP2023/066056 patent/WO2023242316A1/fr not_active Ceased
  • 2023-06-15 EP EP23733700.1A patent/EP4540896A1/de active Pending

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