ELECTRIC OR HYBRID MOTOR VEHICLE WITH MULTIPURPOSE MOUNTING BRACKET FOR VARIOUS ELECTRIC MACHINES

Abstract

The invention relates to an electric or hybrid motor vehicle, comprising a chassis supporting at least one powertrain (400) including a gearbox (2) and an electric machine (3), and a mounting bracket (100) arranged for mounting the electric machine (3) on the gearbox (2) or on the chassis, which mounting bracket (100) is arranged to allow positional adjustment, along the vertical direction (Z) of the gravitational field, of the electric machine (3) relative to the gearbox (2), and includes mechanical adjustment means (30) defining at least two discrete positions, along the vertical direction (Z), of the electric machine (3) relative to the gearbox (2), so as to allow the mounting of at least one first electric machine (31) or a second electric machine (32), with different geometric characteristics, on the same gearbox (2). Figure 2

Description

Title of the invention: ELECTRIC OR HYBRID MOTOR VEHICLE WITH MULTIPURPOSE MOUNTING BRACKET FOR VARIOUS ELECTRICAL MACHINES

[0001] The invention relates to an electric or hybrid motor vehicle, comprising a chassis supporting at least one powertrain comprising a reducer and an electric machine, and a mounting support arranged for mounting said electric machine on said reducer or on said chassis.

[0002] The invention relates to the field of equipment for electric or hybrid motor vehicles, and more particularly to the mounting of electrical machines on the structure.

[0003] A problem of interchangeability between electrical machines of different types and different sizes is frequently encountered.

[0004] A method of fixing an electrical machine by two supports, lower and upper, superimposed one on top of the other in a so-called vertical direction, which is that of the gravitational field, is known. Replacing the electrical machine for which such a support was designed with another electrical machine of a different type, which may have a different type of transmission with the gearbox of the transmission group, in particular with a belt or conversely with teeth, and especially a different center distance between the axis of the shaft of the electrical machine and that of the gearbox, which can result in a significant difference in the vertical direction, for example on the order of 15 mm, requires modifying the height of the support.

[0005] It is therefore necessary to have a modular support that is compatible with either electrical machine coupled with the reducer.

[0006] The objective of the present invention is to remedy these drawbacks by proposing an electrical machine support that offers adaptability along the vertical direction to compensate for the height difference between two electrical machines.

[0007] To achieve this objective, the invention proposes an electric or hybrid motor vehicle, comprising a chassis supporting at least one powertrain comprising a reducer and an electric machine, and a mounting support arranged for mounting said electric machine on said reducer or on said chassis.

[0008] According to the invention, said mounting support is arranged to allow adjustment in position, along the vertical direction of the gravitational field, of said electrical machine relative to said reducer, and comprises mechanical adjustment means defining at least two discrete positions, along said vertical direction, of said electrical machine relative to said reducer, so as to allow the mounting of at least one first electric machine or a second electric machine, with different geometric characteristics, on the same so-called reducer.

[0009] This mounting bracket, adjustable to fix two different electrical machines, makes it possible to reduce the diversity of brackets and to guarantee interchangeability between machines.

[0010] Advantageously, said mounting support comprises a first part arranged to be fixedly assembled on said reducer or on said chassis, and a second part mounted to slide on or in said first part along said vertical direction and adjustable in position relative to said first part, and said mechanical adjustment means comprise at least a first array of holes at the level of said first part or said second part and a plurality of second arrays of holes spaced apart along said vertical direction respectively at the level of said second part or said first part, all the holes being aligned two by two in projection in a horizontal plane perpendicular to said vertical direction, and said mechanical adjustment means comprise at least one pin arranged to pass through both a first hole of said first array of holes and a second hole of said second array of holes,to join said first part and said second part together along said vertical direction.

[0011] Thus, it is easy to adapt, by relative sliding, the position of the second part, particularly the upper part, to that of the first part, particularly the lower part. Simply pinning the second part relative to the first part ensures precise relative positioning along the vertical direction, as well as good mechanical strength.

[0012] Advantageously, said second part comprises a plurality of elementary supports each mounted sliding along said vertical direction on or in an elementary structure comprising said first part.

[0013] It is thus possible to distribute the forces along a longitudinal direction of the horizontal plane, perpendicular to the vertical direction, by spacing the elementary structures along this longitudinal direction. It is also therefore possible to create a less massive and less expensive mechanism.

[0014] Advantageously, said second part is arranged to cooperate with said first part with a play along the direction of each said pin.

[0015] It is thus possible to introduce the second part into position relative to the first part without jamming or friction.

[0016] Advantageously, each said elementary support is arranged to cooperate with a said elementary structure with a clearance along the direction of each said pin.

[0017] It is thus possible to introduce into position each elementary support relative to each elementary structure without jamming or friction.

[0018] Advantageously, said play is between 0.5 mm and 1.5 mm.

[0019] These values ​​are compatible with the use of profiles from the trade, to produce the second part and the first part, in particular the elementary supports and the elementary structures.

[0020] Advantageously, each first array of holes and each said second array of holes comprises at least one longitudinal hole arranged for guiding said spindle along a longitudinal direction of the horizontal plane, perpendicular to said vertical direction, and comprises at least one transverse hole arranged for guiding said spindle along a transverse direction of the horizontal plane, perpendicular to said vertical direction and to said longitudinal direction, and the positioning of each said longitudinal hole and each said transverse hole of each said first array of holes and each said second array of holes tends to impose a longitudinal support along said longitudinal direction between said second part and said first part, and a transverse support along said transverse direction between said second part and said first part,when said second part and said first part are connected by at least one said pin along said longitudinal direction and at least one said pin along said transverse direction.

[0021] It is thus possible to achieve a locking in position with support on two antagonistic surfaces, under the locking action achieved by the insertion of the pins.

[0022] Advantageously, each of said elementary supports comprises a second lower hole array and a second upper hole array, identical, each extending in a horizontal plane perpendicular to said vertical direction and spaced at a predefined center distance along said vertical direction, said second lower hole array comprising longitudinal holes arranged each for guiding said spindle along a longitudinal direction of the horizontal plane, perpendicular to said vertical direction, and at least one transverse hole arranged for guiding said spindle along a transverse direction of the horizontal plane, perpendicular to said vertical direction and to said longitudinal direction, and said second upper hole array comprising longitudinal holes arranged each for guiding said spindle along a longitudinal direction of the horizontal plane, perpendicular to said vertical direction,and at least one transverse hole arranged for guiding said spindle along a transverse direction of the horizontal plane, perpendicular to said vertical direction and to said longitudinal direction, and each said elementary structure comprises a first array of holes extending in a horizontal plane perpendicular to said vertical direction and comprising longitudinal holes arranged for guiding said spindle along a longitudinal direction of the , horizontal plane, perpendicular to said vertical direction, and at least one transverse hole arranged for guiding said spindle along a transverse direction of the horizontal plane, perpendicular to said vertical direction and to said longitudinal direction.

[0023] The production of the modular mounting support is therefore very simple, and can be done using simple drilling templates.

[0024] Advantageously, the sliding between said first part and said second part is carried out at the level of rectangular section profile structures, which comprise said first part and said second part.

[0025] The implementation is thus both very rigid and inexpensive.

[0026] Advantageously, said longitudinal holes are positioned near the corners of said profiles opposite said transverse holes.

[0027] Thus the holding torque is greater, and the stability increased.

[0028] The invention will be further detailed by describing non-limiting embodiments, and based on the accompanying figures illustrating variants of the invention, in which: - [Fig.1] illustrates schematically and in perspective, an adjustable mounting support equipping a vehicle according to the invention, this support includes mechanical adjustment means defining at least two discrete positions, along a vertical direction, of an electrical machine relative to a reducer; this adjustable support includes a first lower part, relative to which a second upper part is slidably mounted, their relative adjustment in position is achieved by pins not shown in the present figure, inserted into holes positioned opposite each other in the first lower part and the second upper part; - [Fig.2] schematically illustrates in perspective two variants of powertrain groups, each comprising, in the lower part, a reducer of the same dimensions, and in the upper part, positioned by the mounting support, an electric machine; the two electric machines have different geometries; the assembly of a first electric machine shown on the left is carried out in a position of the mounting support where the first lower part and the second upper part are furthest apart, while the assembly of a second electric machine shown on the right is carried out in a position of the mounting support where the first lower part and the second upper part are closest together; - [Fig.3] schematically illustrates the mounting support according to the invention, in cross-section in a horizontal plane perpendicular to the vertical direction, the alignment of a network of holes in the first lower part, and another network of holes in the second upper part, which are pressed against each other (at the bottom left corner of the figure) by the insertion of pins, only two of which are shown in black, one in a longitudinal direction, the other in a transverse direction, the networks of holes illustrated here allowing the insertion of four pins in the directions of the hollowed-out arrows, the positions of the two pins not yet inserted being shown in dashed lines; the figure shows the play between the surfaces of the first lower part and the second upper part which are not in contact; - [Fig.4] schematically illustrates the same mounting bracket, in cross-section according to a vertical section plane AA of [Fig.3], in the two adjustment positions illustrated in [Fig.2], the left part of the figure corresponds to the position of the mounting bracket where the first lower part and the second upper part are closest to each other, and the right part of the figure corresponds to the position of the mounting bracket where the first lower part and the second upper part are furthest apart from each other; the two pins of [Fig.3] are shown in black; the two arrays of holes, separated by a predetermined gap, are distinguished, and the surfaces of the first lower part and the second upper part are seen pressed against each other (on the left side of the figure) at the transverse pin; - [Fig. 5] schematically illustrates a longitudinal section of the same support of assembly, by a vertical plane passing through an alignment of spindle holes, in the position where the first lower part and the second upper part are closest to each other; - [Fig.6] schematically illustrates an electric motor vehicle or hybrid, comprising a chassis supporting a powertrain, which includes a reduction gear and an electric machine, and a mounting bracket arranged for mounting the electric machine on the reduction gear or on the chassis.

[0029] The invention relates, as seen in [Fig. 6], to an electric or hybrid motor vehicle 1000, comprising a chassis 500 supporting at least one powertrain 400, which includes a reduction gear 2 and an electric machine 3, and a mounting bracket 100 arranged for mounting the electric machine 3 on the reduction gear 2 or on the chassis 500. The term reduction gear is not limiting, and may refer to any device for transmitting the energy supplied by an electric motor to the vehicle's running gear.

[0030] This mounting support 100 is arranged to allow the adjustment in position, according to the vertical direction Z of the gravity field, of the electric machine 3 with respect to the reducer 2, and includes mechanical adjustment means 30 defining at least two discrete positions, according to the vertical direction Z, of the electric machine 3 with respect to the reducer 2, so as to allow the mounting of at least a first electric machine 31 or a second electric machine 32, of different geometric characteristics, on the same reducer 2, or on a reducer of the same dimensions, as seen on [Fig.2].

[0031] More particularly, as seen on [Fig.1], the mounting support 100 comprises a first part 10, which is arranged to be fixedly assembled on the reducer 2 or on the chassis 500, and a second part 20, slidably mounted on or in the first part 10 in the vertical direction Z of the gravity field, and adjustable in position relative to the first part 10.

[0032] The mechanical adjustment means 30 comprise at least one first array of holes in the first part 10 or the second part 20 and a plurality of second arrays of holes spaced apart along the vertical direction Z respectively in the second part 20 or the first part 10. All the holes are aligned in pairs in projection onto a horizontal plane XY perpendicular to the vertical direction Z. The mechanical adjustment means 30 comprise at least one pin 40 which is arranged to pass through both a first hole of a first array of holes and a second hole of a second array of holes, to secure the first part 10 and the second part 20 along the vertical direction Z.

[0033] The pin 40 can be made of a pin, a split pin, a conical pin, or similar.

[0034] More particularly, the mechanical adjustment means 30 comprise as many pins 40 as there are holes in a given horizontal XY plane.

[0035] Advantageously, the second part 20 comprises a plurality of elementary supports 20A, 20B, each mounted sliding along the vertical direction Z on or in an elementary structure 11A, 11B, which comprises the first part 10. More particularly, each elementary support 20A, 20B, comprises a foot 21, 21A, 21B.

[0036] More particularly as seen on [Fig.3], the second part 20 is arranged to cooperate with the first part 10 with a clearance J along the direction of each pin 40.

[0037] More particularly, each elementary support 20A, 20B, (and in particular its foot 21A, 21B, is arranged to cooperate with an elementary structure 11A, 11B, with a clearance J along the direction of each pin 40.

[0038] More particularly, this clearance J is between 0.5 mm and 1.5 mm, and in particular between 0.8 mm and 1.2 mm, and even more particularly close to 1.0 mm.

[0039] More particularly, each first array of holes and each second array of holes includes at least one longitudinal hole 12, 22, 221, 222, arranged for guiding a spindle 40 along a longitudinal direction X of the horizontal plane, perpendicular to the vertical direction Z, and includes at least one transverse hole 13, 23, 231, 232 arranged for guiding a spindle 40 along a transverse direction Y of the horizontal plane, perpendicular to the vertical direction Z and to the longitudinal direction X.

[0040] The positioning of each longitudinal hole 12, 22, 221, 222 and of each transverse hole 13, 23, 231, 232, of each first array of holes and of each second array of holes tends to impose a longitudinal support along the longitudinal direction X between the second part 20 and the first part 10, according to the respective bearing surfaces 25 and 15 visible in [Fig.3], and a transverse support along the transverse direction Y between the second part 20 and the first part 10, according to the respective bearing surfaces 29 and 19 visible in [Fig.3], when the second part 20 and the first part 10 are linked by both at least one pin 40 along the longitudinal direction X and at least one pin 40 along the transverse direction Y.

[0041] More particularly, each elementary support 20A, 20B, comprises a second lower hole array 221, 231, and a second upper hole array 222, 232, identical, each extending in a horizontal plane perpendicular to the vertical direction Z and spaced at a predefined center distance E along the vertical direction Z.

[0042] As seen in [Fig.4], the second lower hole array comprises longitudinal holes 221 arranged each for guiding a spindle 40 along a longitudinal direction X of the horizontal plane, perpendicular to the vertical direction Z, and at least one transverse hole 231 arranged for guiding a spindle 40 along a transverse direction Y of the horizontal plane, perpendicular to the vertical direction Z and to the longitudinal direction X.

[0043] And the second upper hole array comprises longitudinal holes 222 arranged each for guiding a spindle 40 along a longitudinal direction X of the horizontal plane, perpendicular to the vertical direction Z, and at least one transverse hole 232 arranged for guiding a spindle 40 along a transverse direction Y of the horizontal plane, perpendicular to the vertical direction Z and to the longitudinal direction X.

[0044] Each elementary structure 1 IA, 1 IB, comprises a first array of holes extending in a horizontal plane perpendicular to the vertical direction Z and comprising longitudinal holes 12 arranged for guiding a spindle 40 along a longitudinal direction X of the horizontal plane, perpendicular to the direction vertical Z, and at least one transverse hole 13 arranged for guiding a spindle 40 along a transverse direction Y of the horizontal plane, perpendicular to the vertical direction Z and to the longitudinal direction X.

[0045] More particularly, and as seen in [Fig.1], [Fig.3], [Fig.4], [Fig.5], the sliding between the first part 10 and the second part 20 is carried out at the level of rectangular section profile structures, which comprise the first part 10 and the second part 20.

[0046] More particularly, the longitudinal holes 12, 22, are positioned near the corners of the profiles opposite the transverse holes 13, 23.

[0047] The figures illustrate a particular, non-limiting example, where the elementary supports 20A, 20B each have a foot 21A, 21B, which is arranged to cooperate directly with an elementary structure 11A, 11B. In these examples, the feet 21A and 21B slide inside the elementary structures 1IA and 1IB.

[0048] These elementary structures 11A and 1 IB each comprise, in a horizontal plane XY, a first unique network of holes, which comprises a transverse hole 13 along the transverse direction Y, and three longitudinal holes 12 along the longitudinal direction X, these longitudinal holes 12 are spaced as far apart as possible from the transverse hole 13, and the two furthest away are located in the half of the profile opposite the transverse hole 13.

[0049] The feet 21A and 21B of the elementary supports 20A and 20B each have two second sets of holes, each in a horizontal plane XY, identical and parallel. Each of these second sets of holes has a transverse hole 23 along the transverse direction Y, and three longitudinal holes 22 along the longitudinal direction X. These longitudinal holes 22 are spaced as far apart as possible from the transverse hole 23, and the two furthest are located in the half of the profile opposite the transverse hole 23.

[0050] The feet 21A and 21B are advantageously made from rectangular section profiles, and slide in other rectangular section profiles, slightly larger, which constitute the elementary structures 11A and 11B, this sliding taking place with the play mentioned above, close to 1.0 mm.

[0051] When the mounting bracket 100 is adjusted in position, the holes in the feet 21A and 21B and the elementary structures 1IA and 1IB are substantially opposite each other. Inserting at least one pin 40 secures them in position. Preferably, one pin 40 is used in the transverse direction Y, and at least one pin 40 in the longitudinal direction X, which makes it possible to take up any gaps and to press the opposing outer surfaces 25 and 29 of the feet 21A and 21B, and the inner surfaces 15 and 19 of the elementary structures 11A and 11B, respectively, against each other. The value of the gap between the other surfaces that are not in contact, outer surfaces, is thus restored. 26 and 28 of legs 21A and 21B, and internal parts 16 and 18 respectively of elementary structures 11A and 11B. Advantageously, as many pins 40 as are available holes are inserted to reinforce the locking mechanism. The use of split pins, in particular, allows for easy assembly and a firm fastening.

[0052] The non-limiting example shown relates to two lines of four fixing points, with a gap E of 16 mm along the vertical direction Z.

[0053] The choice of fixing on the upper or lower hole network ensures the required center distance value.

[0054] Naturally, a reverse mounting is possible, with the feet 21A and 21B mounted externally to the elementary structures 11A and 11B.

[0055] As is also possible the implantation of the single hole network on the feet 21A and 21B, and of the parallel hole networks on the elementary structures 1 IA and 1 IB.

[0056] These examples deal with a single gap between two adjustment positions; it is naturally possible to manage a greater number of adjustment positions, taking care, however, not to weaken the mounting support 100 by the presence of an excessive number of holes.

[0057] The invention thus provides an electrical machine support which offers Z-axis adaptability to compensate for the height difference between two electrical machines.

[0058] Thus, thanks to the invention, the height adjustment of a motor mount is carried out by the use of a sliding device with fixing by standardized mechanical fixing elements such as pins, split pins, screws, or the like.

[0059] The invention also makes it possible to reduce the number of fixing supports in management, to minimize the diversity of supports, and to guarantee interchangeability.

Claims

Demands

1. Electric or hybrid motor vehicle (1000), comprising a chassis (500) supporting at least one powertrain (400) comprising a gearbox (2) and an electric machine (3), and a mounting bracket (100) arranged for mounting said electric machine (3) on said gearbox (2) or on said chassis (500), characterized in that said mounting bracket (100) is arranged to allow adjustment in position, along the vertical direction (Z) of the gravity field, of said electric machine (3) relative to said gearbox (2), and comprises mechanical adjustment means (30) defining at least two discrete positions, along said vertical direction (Z), of said electric machine (3) relative to said gearbox (2), so as to allow the mounting of at least one first electric machine (31) or a second electric machine (32), of different geometric characteristics, on the same said gearbox (2).

2. Motor vehicle (1000) according to claim 1 characterized in that said mounting support (100) comprises a first part (10) arranged to be fixedly assembled on said reducer (2) or on said chassis (500), and a second part (20) slidably mounted on or in said first part (10) along said vertical direction (Z) and adjustable in position relative to said first part (10), and in that said mechanical adjustment means (30) comprise at least a first array of holes at the level of said first part (10) or of said second part (20) and a plurality of second arrays of holes spaced apart along said vertical direction (Z) respectively at the level of said second part (20) or of said first part (10), all the holes being aligned two by two in projection in a horizontal plane (XY) perpendicular to said vertical direction (Z),and in that said mechanical adjustment means (30) comprise at least one pin (40) arranged to pass through both a first hole of said first array of holes and a second hole of said second array of holes, to join said first part (10) and said second part (20) along said vertical direction (Z).

3. A motor vehicle (1000) according to claim 1 or 2 characterized in that said second part (20) comprises a plurality of elementary supports (20A; 20B) each mounted sliding along said vertical direction (Z) on or in an elementary structure (11A; 11B) comprising said first part (10).

4. Motor vehicle (1000) according to claim 2 and any one of claims 1 to 3 characterized in that said second part (20) is arranged to cooperate with said first part (10) with play along the direction of each said pin (40).

5. Motor vehicle (1000) according to claims 3 and 4 characterized in that each said elementary support (20A; 20B) is arranged to cooperate with a said elementary structure (1 IA; 1 IB) with a clearance along the direction of each said pin (40).

6. Motor vehicle (1000) according to claim 4 or 5 characterized in that said clearance is between 0.5 mm and 1.5 mm.

7. Motor vehicle (1000) according to claim 2 and any one of claims 1 to 6 characterized in that each first array of holes and each said second array of holes comprises at least one longitudinal hole (12; 22, 221, 222) arranged for guiding said spindle (40) along a longitudinal direction (X) of the horizontal plane, perpendicular to said vertical direction (Z), and comprises at least one transverse hole (13; 23, 231, 232) arranged for guiding said spindle (40) along a transverse direction (Y) of the horizontal plane, perpendicular to said vertical direction (Z) and to said longitudinal direction (X), and in that the positioning of each said longitudinal hole (12; 22, 221, 222) and of each said transverse hole (13;23, 231, 232) of each said first network of holes and of each said second network of holes tends to impose a longitudinal support along said longitudinal direction (X) between said second part (20) and said first part (10), and a transverse support along said transverse direction (Y) between said second part (20) and said first part (10), when said second part (20) and said first part (10) are connected by at least one said pin (40) along said longitudinal direction (X) and at least one said pin (40) along said transverse direction (Y).;

8. Motor vehicle (1000) according to claims 2 and 3, and any one of claims 1 to 7, characterized in that each said elementary support (20A; 20B) comprises a second lower hole array (221, 231) and a second array of upper holes (222, 232), identical, each extending in a horizontal plane perpendicular to said vertical direction (Z) and spaced at a predefined center distance (E) along said vertical direction (Z), said second lower hole array comprising longitudinal holes (221) each arranged for guiding said spindle (40) along a longitudinal direction (X) of the horizontal plane, perpendicular to said vertical direction (Z), and at least one transverse hole (231) arranged for guiding said spindle (40) along a transverse direction (Y) of the horizontal plane, perpendicular to said vertical direction (Z) and to said longitudinal direction (X), and said second upper hole array comprising longitudinal holes (222) each arranged for guiding said spindle (40) along a longitudinal direction (X) of the horizontal plane, perpendicular to said vertical direction (Z),and at least one transverse hole (232) arranged for guiding said spindle (40) along a transverse direction (Y) of the horizontal plane, perpendicular to said vertical direction (Z) and to said longitudinal direction (X), and in that each said elementary structure (11A; 11B) comprises a first array of holes extending in a horizontal plane perpendicular to said vertical direction (Z) and comprising longitudinal holes (12) arranged for guiding said spindle (40) along a longitudinal direction (X) of the horizontal plane, perpendicular to said vertical direction (Z), and at least one transverse hole (13) arranged for guiding said spindle (40) along a transverse direction (Y) of the horizontal plane, perpendicular to said vertical direction (Z) and to said longitudinal direction (X).

9. Motor vehicle (1000) according to claim 2 and any one of claims 1 to 8, characterized in that the sliding between said first part (10) and said second part (20) is carried out at the level of rectangular section profile structures, which comprise said first part (10) and said second part (20).

10. Motor vehicle (1000) according to claim 9 characterized in that said longitudinal holes (12; 22) are positioned near the corners of said profiles opposite said transverse holes (13; 23).

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