Mechanical component for electrical contact and corresponding control module and motor-fan assembly

Abstract

The invention relates to a mechanical component (23) for electrical contacting, configured to be fixed on the one hand to an electronic board (19) and on the other hand to an electrical terminal, in particular to a stator part of an electric motor of a motor-fan assembly of a heating, ventilation and / or air conditioning installation of a motor vehicle. The component (23) comprises a fixing portion (27) for fixing to the electronic board (19) and at least two support tabs (35), the fixing portion (27) being configured to be inserted and soldered into complementary holes (191) of the electronic board (19), the at least two support tabs (35) being configured to abut against the electronic board (19) and being arranged on a side of the component (23) opposite the fixing portion (27) in a plane (P) perpendicular to the electronic board (19), the plane (P) extends between the support tab (35) and the fixing portion (27) when the component (23) is mounted on the electronic board (19). The invention also relates to a control module supporting such a component (23) and to a motor-fan assembly comprising such a control module.

Description

Technical Field

[0001] The invention relates to a mechanical component for electrical contact, which makes it possible to establish electrical contact between a printed circuit on an electronic board and a stator part, such as a stator winding of a motor, in particular a stator winding of a motor-fan assembly for a 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 component for electrical contact, which is fastened to the printed circuit board. The invention also relates to a motor-fan assembly, in particular a motor-fan assembly for a heating, ventilation and / or air-conditioning installation of a motor vehicle, comprising such a control module. Background Art

[0002] It is known practice to implement printed circuit boards to control devices. For example, a motor of a motor-fan assembly for a heating, ventilation and / or air conditioning system of a motor vehicle comprises such a board in order to control the rotation of the motor of the motor-fan assembly.

[0003] Electronic and / or mechanical components are usually fastened to the printed circuit board in order to form an electronic control circuit.

[0004] Furthermore, the electronic control circuit is in contact with the stator part of the motor, in particular the windings of the stator, for example three windings. According to a known solution, this contact is achieved by means of electrical terminals or electrical contact blades, for example extending perpendicularly to the printed circuit board. These electrical terminals are connected to the printed circuit board by means of a mechanical part for electrical contact, called a lead frame.

[0005] Such mechanical components for electrical contact are usually formed from a metal sheet which is cut and bent to form a flexible portion having a portion for fastening to an electrical terminal or electrical contact blade and a plurality of fastening tabs for insertion into through holes in a printed circuit board.

[0006] However, depending on the degree of curvature, the shape of the component may be difficult to manufacture and have a relatively large footprint, which therefore requires space on the electronic board. A constant goal is to minimize the footprint and in particular to reduce the size of the electronic board so as to make it easier to incorporate into the motor-fan assembly, while making it possible to increase the power transmitted and reduce the electricity consumed.

[0007] Furthermore, the fastening tabs are usually in the form of thin rods. The fastening tabs are therefore intended to provide electrical contact between the mechanical component and the printed circuit on the electronic board. These tabs can be soldered to the printed circuit board, in particular by wave soldering. In order to ensure satisfactory electrical contact, the fastening solder must extend around each fastening tab. To achieve this, all faces of each fastening tab must be covered with a layer of tin. Therefore, each mechanical component for electrical contact must usually be immersed in a tin bath after forming. This step is very costly.

[0008] Other methods for fastening the mechanical part for electrical contact to the printed circuit board have been tested, in particular a technique known as surface mounting technology or SMT. In this case, the mechanical part for electrical contact has no fastening tabs, but has a flat surface for soldering to the board, in particular the face of the board on which the control circuit is etched. However, fastening the electrical terminal to the mechanical part for electrical contact imposes relatively large stresses on the mechanical part for electrical contact. It is not possible to manufacture fasteners that can withstand such stresses over a long period of time using the known solutions of this surface mounting technology.

[0009] Furthermore, when the electronic board is transported to the welding area, the component must be held in place to prevent it from falling out before welding. According to a known solution, the component includes additional positioning tabs for clamping on the electronic board. However, this adds a step to the method of assembling the component on the electronic board. Summary of the invention

[0010] The object of the present invention is to propose a mechanical component for electrical contacting which does not have one or more disadvantages of the known mechanical components for electrical contacting.

[0011] To this end, the invention relates to a mechanical component for electrical contact, made of an electrically conductive material and configured to be fastened to an electronic board in order to place a printed circuit on the electronic board in electrical contact with electrical terminals, in particular electrical terminals of a stator part of an electric motor of a motor-fan assembly of a heating, ventilation and / or air-conditioning facility of a motor vehicle, said component being configured to be fastened to the electronic board and to the electrical terminals.

[0012] According to the invention, said mechanical means for electrical contacting comprises a portion for fastening to an electronic board, which portion is configured to be inserted and soldered into a complementary hole in the electronic board.

[0013] The component further comprises at least two support tabs which are configured to abut against the electronic board and are arranged on a side of the component opposite to the fastening portion relative to a plane perpendicular to the electronic board, the plane extending between the support tabs and the fastening portion when the component is mounted on the electronic board.

[0014] Such a component is smaller and takes up less space on the electronic board than prior art solutions, while making it possible to transmit the same or even more power than prior art solutions.

[0015] The portion passing through the circuit board for fastening to the electronic board makes it possible to position the component on the electronic board before soldering, and the support tab rests against the electronic board, preventing the component from tilting, for example when the electronic board is transported to the soldering area or when the transport device is stopped, without the need for other positioning elements, such as additional positioning tabs for clamping on the electronic board.

[0016] Finally, such a part is easy to manufacture and can be manufactured at a lower cost than the known solutions of the prior art.

[0017] The component may also include one or more of the following features considered alone or in combination.

[0018] The portion for fastening to the electronic board may be configured for insertion along an insertion axis, and the component comprises at least one axial stop element configured to form a stop against the electronic board along the insertion axis.

[0019] For example, this may be at least one shoulder. According to an exemplary embodiment, the component comprises at least two shoulders on either side of the portion for fastening to the electronic board. The two shoulders may be arranged facing the two support tabs.

[0020] According to an exemplary embodiment, the portion for fastening to the electronic board is intended to be welded in a complementary hole in a central region of the electronic board.

[0021] The portion with the one or more shoulders for fastening to the electronic board may be closer to the center of the electronic board than the support tabs.

[0022] The electronic board can be conveyed along a travel direction from rear to front, for example to a welding area.The support tabs can be positioned closer to the front periphery of the electronic board in the travel direction than the portion for fastening to the electronic board.

[0023] The portion for fastening to the electronic board may have an elongated cross section. For example, it may be rectangular.

[0024] The portion for fastening to the electronic board can form a single large fastening portion for insertion into a single complementary hole in the electronic board, for example in an oblong shape, which makes it possible to have a sufficient cross-section to transmit the power while reducing the space occupied on the electronic board compared to the solution with a plurality of fastening pins having a smaller cross-section and which must be spaced apart from each other.

[0025] The component may comprise at least one connecting element connecting the portion for fastening to the electronic board and the supporting tab.

[0026] The connecting element is produced, for example, in the form of a tongue.

[0027] The connecting element may extend in a plane perpendicular to the portion for fastening to the electronic board.

[0028] According to an exemplary embodiment, the support tabs respectively have a first arm connected to the connecting element and a second arm bent relative to the first arm so as to form a support foot configured to be arranged against the electronic board.

[0029] The support feet may rest against the electronic board.

[0030] The first arm of the support tab extends, for example, parallel to the portion of the electronic board intended for fastening to the component.

[0031] The second arm of the support tab may be bent at 90° relative to the first portion.

[0032] The second arm of the support tab may extend parallel to the connecting element.

[0033] The component may include one or more bends.

[0034] At least one bend may connect the connecting element to the portion for fastening to the electronic board.

[0035] The at least one bend may connect the connecting element to another portion for fastening to an electrical terminal.

[0036] At least one bend may connect the connection element to the at least one support tab.

[0037] Thus, the component can be at least as flexible as in prior art solutions, thereby reducing the transmission of vibrations from the electrical terminals of the stator part to the electronic board and reducing the risk of damaging the electronic board. The component has a shape that is easy to manufacture without requiring many bends to obtain this flexibility.

[0038] The bend or bends are produced, for example, in the form of at least one elbow portion.

[0039] The bend or bends are produced, for example, in the form of at least one U-shaped section.

[0040] For example, at least one U-shaped portion may connect the connection element and the portion for fastening to the electrical terminal, extending at least partially between the support tabs, the component comprising a cavity between each support tab and the U-shaped portion.

[0041] The portion for fastening to an electrical terminal and the connecting element extend, for example, in two respective planes that are inclined relative to one another and form an angle greater than or equal to 100° and less than or equal to 120°.

[0042] The invention also relates to a control module, in particular for a motor-fan assembly of a heating, ventilation and / or air-conditioning installation of a motor vehicle, comprising an electronic board having a printed circuit and at least one mechanical component for electrical contact as described above, which is fastened to the electronic board.

[0043] The parts for fastening to the electronic board are, for example, soldered in complementary holes in the central region of the electronic board while making electrical contact with the tracks of the printed circuit.

[0044] Therefore, the mechanical component or components for electrical contact are oriented towards the inside of the electronic board. The central area is a so-called dead zone, i.e. contains no power components. This makes it possible to provide more copper surface on the periphery of the electronic board and thus provide more power.

[0045] According to one example, the electronic board holds at least three mechanical components for electrical contact, each mechanical component being intended to be connected to a respective phase of the brushless motor.

[0046] The invention also relates to a motor-fan assembly, in particular for a heating, ventilation and / or air conditioning installation of a motor vehicle. The motor-fan assembly comprises an electric motor with a stator part, a control module as described above, and at least one electrical terminal arranged to make electrical contact with the stator part and with a mechanical component for electrical contact.

[0047] The portion for fastening to the electric terminal is, for example, welded to the electric terminal.

[0048] According to one embodiment, the electric motor is a brushless motor.

[0049] The stator part of the motor comprises a stator and, for example, at least one stator winding.The electrical terminal may be arranged in electrical contact with the stator winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Further advantages and characteristics of the invention will become more apparent on reading the following description, given by way of illustrative and non-limiting examples, and the accompanying drawings, in which:

[0051] Figure 1 An exemplary embodiment of a motor-fan assembly according to the present invention is shown.

[0052] Figure 2 Shows Figure 1 A motor support of a motor-fan assembly in the embodiment of the present invention is provided, to which a control module is fastened, the control module comprising an electronic board holding mechanical components for electrical contact.

[0053] Figure 3is a perspective view of the mechanical components used for electrical contact before assembly on an electronic board.

[0054] Figure 4 yes Figure 2 A magnified view showing further details of the two mechanical components for electrical contact assembled on the electronic board.

[0055] Figure 5 is a side view of the component.

[0056] Figure 6 is a top view of the component.

[0057] In the figures, identical elements have the same reference numerals. DETAILED DESCRIPTION

[0058] The following embodiments are examples. Although the description relates to one or more embodiments, this does not necessarily mean that each figure is related to the same embodiment, or that a feature is only used for one embodiment. Individual features of different embodiments may also be combined or interchanged to produce other embodiments.

[0059] In the description, certain elements may be assigned ordinal numbers, such as first element or second element. In this case, the ordinal numbers are only used to distinguish and indicate similar but not identical elements. Such sequential numbering does not mean that one element takes precedence over another element, and such numbers can be easily interchanged without departing from the scope of the present invention. Likewise, such sequential numbering does not imply any chronological order.

[0060] Figure 1 A motor-fan assembly 1 is shown, in particular for a heating, ventilation and / or air-conditioning installation of a vehicle.

[0061] The motor-fan assembly 1 (or ventilation device) comprises in particular a fan wheel 3 , an electric motor 5 and a support 7 for the motor 5 , hereinafter referred to as motor support 7 .

[0062] The fan impeller 3 rotates about an axis of rotation A. The motor 5 is used to rotate the fan impeller 3 about its axis A.

[0063] It can specifically be a brushless motor 5. The motor 5 comprises a rotor and a stator part (not visible in the figure). The rotor is, for example, an external rotor. The rotor can take the form of a cup fastened to the drive shaft. The fan impeller 3 can be fastened directly to the drive shaft. The rotor can include magnets, for example fastened to the inner face of the cup. The stator part can be internal, i.e. positioned inside the rotor. The stator part comprises a stator and, for example, at least one stator winding, in particular three stator windings. The magnets of the rotor can be positioned radially outside the stator windings. The term radial is used relative to the axis of rotation A.

[0064] The motor support 7 serves to enable the motor-fan assembly 1 to be fixed in a vehicle, in particular a motor vehicle.

[0065] exist Figure 2 As can be seen more clearly in FIG, the motor support 7 can in particular comprise two rings, namely an inner ring 7A and an outer ring 7B. The two rings 7A, 7B can be coaxial about an axis coinciding with the axis of rotation A of the fan impeller 3, for example.

[0066] The rings 7A, 7B can be connected to each other by an elastomeric material. In particular, the elastomeric material can form a decoupling ring 9 between the inner ring 7A and the outer ring 7B. The elastomeric material is, for example, polystyrene-b-poly(ethylene-butylene)-b-polystyrene or SEBS. This makes it possible to limit vibrations generated by the motor 5 and / or the fan impeller 3 in the vehicle and / or to limit the transmission of external stresses to the motor 5 and / or the fan impeller 3.

[0067] The inner ring 7A can be used for fastening to the motor 5. The outer ring 7B can be used for fastening directly or indirectly to a structural element, in particular a structural element of a heating, ventilation and / or air conditioning system of the vehicle. In the example shown, the motor support 7 comprises a peripheral air deflector 11 to which the outer ring 7B is fastened. The air deflector 11 can be used for fastening to a structural element.

[0068] The motor support 7 advantageously holds a module 13 for controlling the motor 5. In particular, a support portion such as a heat sink 15 can be fastened to at least one ring, such as the inner ring 7A, and hold the control module 7. For example, the heat sink 15 can have a recess defining a groove for receiving the control module 13. The recess can be surrounded by a protruding rim. Finally, again referring to Figure 1 , a cover 17 can be fastened to the motor support 7 so as to cover the control module 13. It can be fastened by any suitable means, such as but not limited to by a threaded connection. Thus, the cover 17 together with the recess in the radiator 15 defines a housing for receiving the control module 13.

[0069] The control module 13 comprises an electronic board 19 having a printed circuit ( Figure 2 ).

[0070] The control module 13 may also comprise at least one connector electrically connected to the electronic board 19. This connector 21 makes it possible to supply power to the electronic board 19 and therefore to the motor 5 when the motor 5 is connected to a wiring harness, in particular of a vehicle. In particular, when the electronic board 19 is powered, the stator windings may generate a magnetic field which causes the rotor to rotate and therefore the fan impeller 3 to rotate.

[0071] The electronic board 19 holds one or more components. They can be electronic and / or mechanical and / or mechatronic components. In particular, at least one mechanical component 23 for electrical contact is fastened to the electronic board. In the particular example shown, three mechanical components 23 for electrical contact can be provided, each for connection to a respective phase of the brushless motor 5. In order to avoid arcs, a minimum distance must be provided between two mechanical components 23 for electrical contact. This distance is adjusted depending on the power.

[0072] Such a mechanical component 23 for electrical contacting is called a lead frame.

[0073] Such a component 23 or lead frame is made of an electrically conductive material, making it possible to connect or electrically contact an electrical terminal 25 with the electronic board 19, in particular a printed circuit, the electrical terminal 25 being arranged to be in electrical contact with a stator part of the motor 5, for example with a winding of the stator. Thus, the stator winding can be supplied with power via the component 23 or lead frame and the electrical terminal 25, making it possible to control the motor 5.

[0074] Refer to the following Figures 3 to 6 This component 23 or lead frame is described in more detail.

[0075] The component 23 or lead frame is configured to be fastened to the electronic board 19. To this end, the component 23 or lead frame comprises a portion 27 for fastening to the electronic board 19, hereinafter referred to as first fastening portion 27. According to the described embodiment, the component 23 or lead frame comprises a single first fastening portion 27.

[0076] The first fastening portion 27 is, for example, flat or substantially flat.

[0077] The first fastening portion 27 is intended to be inserted into a complementary hole 191 formed in the electronic board 19. The first fastening portion 27 thus passes through this board.

[0078] The first fastening portion 27 can have an elongated cross section. The first fastening portion 27 is, for example, rectangular. It is, for example, manufactured in the form of a tongue.

[0079] The complementary holes 191 are advantageously arranged in a central area of ​​the electronic board 19. More specifically, this is the area known as the dead zone, i.e. it does not hold any power electronic components. The power components are preferably arranged near the periphery or edge of the electronic board 19. The components 23 or leadframes are positioned towards the inside of the electronic board 19. This provides more copper surface on the periphery and therefore more power.

[0080] The shape of the hole 191 is complementary to that of the first fastening portion 27. The hole 191 may have an elongated shape. According to the embodiment shown, it is oblong or substantially oblong.

[0081] When the component 23 or the lead frame is mounted on the electronic board 19, the first fastening portion 27 can thus be inserted into the hole 191 in the electronic board. There can be a single first fastening portion 27, which can be inserted into a single complementary hole 191 in the electronic board 19. The first fastening portion 27 has a larger cross section than a solution with a plurality of fastening pins, which each have a smaller cross section than the first fastening portion 27 and must be spaced apart from each other. This makes it possible to increase the mechanical strength of the component 23 or the lead frame and have a sufficient cross section to transmit power while reducing the occupied space on the electronic board 19.

[0082] The first fastening portion 27 extends, for example, in a first plane P1 . Advantageously, this is a plane perpendicular to the electronic board 19 .

[0083] The first fastening part 27 can be used for insertion along the insertion axis B. The component 23 or the lead frame comprises at least one stop which abuts against the electronic board 19 when the first fastening part 27 is inserted. Such a stop forms an axial stop element, i.e. a stop element along the insertion axis B, which makes it possible to block the insertion movement.

[0084] For example, there is at least one shoulder 29. According to an exemplary embodiment, the component 23 or the lead frame comprises at least two shoulders 29 on either side of the first fastening portion 27. The shoulder or shoulders 29 abut against the electronic board 19. When the first fastening portion 27 passes through the electronic board 19, they define a surface for contact with the electronic board 19.

[0085] The first fastening portion 27 is intended to be soldered in a complementary hole 191 formed in the electronic board 19 so that it makes electrical contact with the traces of the printed circuit. This can be achieved by a wave soldering process. Thus, electrical contact is provided between the electronic board 19 and the component 23 or lead frame.

[0086] Furthermore, the component 23 or the lead frame is configured to be fastened to the electrical terminal 25. To this end, it includes a portion 31 for fastening to the electrical terminal 25, hereinafter referred to as the second fastening portion 31. The second fastening portion 31 can be used for welding to the electrical terminal 25. When the component 23 or the lead frame is welded to the electronic board 19 and the electrical terminal 25 of the stator part, the component 23 or the lead frame transmits power from the electronic board 19 to the stator, for example in order to generate a magnetic field and rotate the rotor.

[0087] The second fastening portion 31 may extend along a second plane P2 different from the first plane P1. The two planes P1, P2 are inclined relative to each other.

[0088] The second fastening portion 31 is, for example, rectangular. It is, for example, produced in the form of a tongue. The second fastening portion 31 can have a greater width than the first fastening portion 27.

[0089] Advantageously, the second fastening part 31 has a boss 33. The boss 33 is, for example, convex. The boss 33 or its dome is used to orient toward the electrical terminal 25 of the stator part. In the example shown, the boss 33 is on the face of the second fastening part 31 that is not oriented toward the first fastening part 27. The boss 33 facilitates electrical contact between the second fastening part 31 and the electrical terminal 25. In addition to the boss 33, the second fastening part 31 can be flat or substantially flat.

[0090] The component 23 or lead frame also comprises at least two support tabs 35. These support tabs 35 are intended to bear against the electronic board 19 when the first fastening portion 27 is inserted into the complementary hole 191 .

[0091] The support tab 35 may be arranged facing the first fastening portion 27 and the one or more shoulders 29 .

[0092] The support tab 35 as well as the first fastening portion 27 and the one or more shoulders 29 may be arranged on two opposite sides of the component 23 or the lead frame. These are opposite sides relative to a plane P perpendicular to the electronic board 19, which extends between the support foot 35 and the first fastening portion 27 when the component 23 or the lead frame is mounted on the electronic board 19. For example, it is a plane P parallel to the first plane P1.

[0093] In particular, the two shoulders 29 may be arranged facing the two supporting tabs 35 .

[0094] To position the component 23 or lead frame before soldering, the first fastening portion 27 to be soldered can be inserted into a complementary hole 191 in the electronic board, with the support tab 35 resting against the electronic board 19. No other positioning elements need to be provided, such as additional positioning tabs for insertion or clamping on the electronic board.

[0095] The first fastening portion 27 with the one or more shoulders 29 may be closer to the center of the electronic board 19 than the support tab 35 .

[0096] The electronic board 19 may be conveyed to, for example, a soldering area in a travel direction from rear to front indicated by arrow F. The support tab 35 may be located closer to the front periphery of the electronic board 19 than the first fastening portion 27 in the travel direction.

[0097] These support tabs 35 make it possible to limit or prevent the tipping of the component 23 or the lead frame when the electronic board 19 is transported. In particular, when the device transporting the electronic board 19 stops, the support tabs 35 can prevent the component 23 or the lead frame from tipping forward, or even from falling.

[0098] Advantageously, the support tabs 35 are intended to abut against the electronic board 19. By way of example, the support tabs 35 each have a first arm 351 and a second arm 352.

[0099] The first arm 351 extends, for example, parallel to the component 23 or the first fastening portion 27 of the lead frame.

[0100] The second arm 352 is bent relative to the first arm 351 , for example by 90°. The second arm 352 forms a support foot for being arranged or lying flat against the electronic board 19 .

[0101] The support tab 35, more specifically its second arm 352 forming a support foot, can be arranged in the direction of travel behind another hole 192 formed in the electronic board 19, through which the electrical terminal 25 will pass. This other hole 192 can be elongated, for example oblong or substantially oblong.

[0102] Furthermore, the component 23 or the lead frame may include at least one connecting element 37 connecting the first fastening portion 27 and the support tab 35. More specifically, the first arm 351 of the support tab 35 is connected to the connecting element 37. The connecting element 37 may also connect the first fastening portion 27 and the second fastening portion 31.

[0103] The connecting element 37 may extend in a third plane P3 different from the first plane P1 and / or the second plane P2. The third plane P3 is inclined relative to the first plane P1 and / or the second plane P2. For example, the connecting element 37 may extend in a plane P3 perpendicular to the first fastening portion 27. The third plane P3 may be inclined relative to the second plane P2, for example, at an angle α greater than 90°. The angle α between the two planes P2, P3 is preferably between 100° and 120°.

[0104] The second arm 352 of the support tab 35 may extend parallel to the connecting element 37 .

[0105] The connecting element 37 may be flat or substantially flat. It is produced, for example, in the form of a tongue. The connecting element 37 may be at least partially rectangular. In the example shown, the connecting element 37 is rectangular with a first side connected to the first fastening portion 27. The shape of the connecting element 37 may optionally be enlarged on a second side opposite to the first side relative to a plane P perpendicular to the electronic board 19. The enlarged side of the connecting element 37 defines, for example, a contour that is close to a trapezoid.

[0106] The connecting element 37 may at least partially have a similar width as the first fastening portion 27. According to a particular exemplary embodiment, a rectangular portion of the connecting element 37 may have the same or substantially greater width than the first fastening portion 27. The width of the rectangular portion of the connecting element 37 may be smaller than the width of the second fastening portion 31.

[0107] Finally, the component 23 or the lead frame may include one or more bends, giving it flexibility. This flexibility or elasticity of the component 23 or the lead frame makes it possible to limit the stresses exerted on the first fastening portion 27. It is thus possible to filter vibrations. In other words, this makes it possible to reduce the transmission of vibrations from the electrical terminals 25 to the electronic board 19, thus preventing the electronic board 19 from being damaged.

[0108] The bend or bends are produced, for example, in the form of at least one elbow section and / or at least one U-shaped section.

[0109] By way of example, at least one bend may be provided which connects the connecting element 37 to the first fastening portion 27. This may be an elbow portion 39. According to the example shown, the elbow portion 39 is bent at a right angle.

[0110] As a variant or in addition, at least one bend may be provided which connects the connecting element 37 to the second fastening portion 31. This may be, for example, a U-shaped portion 41. The U-shaped portion 41 may extend at least partially between the support tabs 35. To this end, the component 23 or the lead frame comprises a cavity 43 between each support tab 35 and the U-shaped portion 41.

[0111] The U-shaped portion 41 may have a similar width as the first fastening portion 27 and / or the rectangular portion of the connecting element 37 .

[0112] According to another variant or in addition, at least one bend may be provided connecting the connection element 37 to the support tab 35. This may be an elbow portion 45. According to the example shown, the elbow portion 45 is bent at a right angle.

[0113] Furthermore, different portions of component 23 or the lead frame may have a constant or substantially constant thickness.

[0114] Such a component 23 or lead frame can thus be produced simply so as to optimize the space required on the electronic board 19 while allowing power transmission when it is soldered to the electronic board 19 and to the electrical terminals of the stator part.

[0115] The first fastening portion 27 makes it possible to position the component 23 or the lead frame on the electronic board 19 before soldering, and the supporting tabs 35 on the opposite sides ensure the stability of the component 23 or the lead frame, preventing it from toppling or falling before soldering.

[0116] Prior art solutions have a plurality of fastening pins of smaller cross-section and must be spaced apart from one another, it is possible to have a single fastening portion 27 of larger cross-section than the plurality of fastening pins, making it possible to have a sufficient cross-section to transmit power while reducing the space occupied on the electronic board 19 .

[0117] Furthermore, one or more shoulders 29 make it possible to increase the stability of the component 23 or the lead frame on the electronic board 19 .

[0118] Finally, thanks to the elbow or U-shaped portion, the component 23 or leadframe is at least as flexible as in prior art solutions, which makes it possible to filter vibrations and prevent damage to the electronic board 19 .

Claims

1. A mechanical component (23) for electrical contact, made of an electrically conductive material, configured to be fastened to an electronic board (19) in order to place a printed circuit on said electronic board (19) in electrical contact with an electrical terminal (25), in particular an electrical terminal of a stator part of an electric motor (5) of a motor-fan assembly (1) of a heating, ventilation and / or air conditioning system of a motor vehicle, said component (23) being configured to be fastened to said electronic board (19) and to said electrical terminal (25), characterized in that: - the component (23) comprises a portion (27) for fastening to the electronic board (19), the fastening portion (27) being configured to be inserted and welded into a complementary hole (191) in the electronic board (19), and - the component (23) further comprises at least two support tabs (35) configured to abut against the electronic board (19) and arranged on a side of the component (23) opposite to the fastening portion (27) relative to a plane (P) perpendicular to the electronic board (19), the plane (P) extending between the support tabs (35) and the fastening portion (27) when the component (23) is mounted on the electronic board (19).

2. Component (23) according to claim 1, wherein the portion (27) for fastening to the electronic board (19) is configured to be inserted along an insertion axis (B), the component (23) comprising at least one axial stop element (29) configured to form a stop against the electronic board (19) along the insertion axis (B).

3. The component (23) according to any of the preceding claims, wherein the portion (27) for fastening to the electronic board (19) has an elongated cross section.

4. Component (23) according to any of the preceding claims, comprising at least one connecting element (37) connecting the portion for fastening (27) to the electronic board (19) and to the supporting tab (35).

5. The component (23) according to claim 4, wherein the support tabs (35) respectively have: - a first arm (351), connected to the connecting element (37), and - a second arm (352) bent relative to the first arm (351) so as to form a supporting foot configured to be placed against the electronic board (19).

6. Component (23) according to claim 4 or 5, comprising at least one bend (39) connecting the connecting element (37) to a portion for fastening to the electronic board (19), and / or, at least one bend (41) connecting the connecting element (37) to another portion (31) for fastening to the electrical terminal (25), and / or, at least one bend (45) connecting the connecting element (37) to at least one supporting tab (35).

7. Component (23) according to claim 6, comprising at least one U-shaped portion (41) connecting the connection element (37) and the portion (31) for fastening to the electrical terminal (25), the at least one U-shaped portion (41) extending at least partially between the support tabs (35), the component comprising a cavity (43) between each support tab (35) and the U-shaped portion (41).

8. A control module (13), in particular for a motor-fan assembly (1) of a heating, ventilation and / or air conditioning system of a motor vehicle, the control module (13) comprising: - an electronic board (19) having a printed circuit, and - at least one mechanical component (23) for electrical contact according to any of the preceding claims, said mechanical component (23) being fastened to said electronic board (19), its portion (27) for fastening to said electronic board (19) being soldered in a complementary hole (191) in a central area of ​​said electronic board (19) while being in electrical contact with the tracks of said printed circuit.

9. A motor-fan assembly (1), in particular for a motor-fan assembly (1) for a heating, ventilation and / or air conditioning system of a motor vehicle, comprising: - an electric motor (5) having a stator part, - a control module (13) according to claim 8, and - at least one electrical terminal (25) arranged to be in electrical contact with the stator portion and the mechanical component (23) for electrical contact.

10. The motor-fan assembly (1) according to claim 9, wherein the electric motor (5) is a brushless motor.

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