FR3123260A1 - MOTOR VEHICLE ASSEMBLY ARRANGEMENT - Google Patents

Abstract

The invention relates to an assembly arrangement (2) for a motor vehicle, the assembly arrangement (2) comprising a side rail (5) of the motor vehicle, an electrical assembly (6) housed in a housing (7) provided a side bracket (10), and a fixing strip (8). The side bracket (10) has at least one through opening (23) and at least two fixing pins (9) projecting from the side bracket (10). The fixing strip (8) bears against the lateral spar (5), the fixing strip (8) comprising a plurality of openings (24), each opening (24) comprising an insertion zone configured to allow the insertion of a head of one of the fixing pins (9) and a locking zone configured to allow locking of the head of the fixing pin (9). Figure 2

Description

MOTOR VEHICLE ASSEMBLY ARRANGEMENT

The technical context of the present invention is that of assembly systems for motor vehicles, and more particularly of assembly systems making it possible to facilitate removable attachment of an electric battery pack to a motor vehicle body. More particularly, the invention relates to an assembly arrangement for a motor vehicle.

In the state of the art, motor vehicles of the electric type are known. In particular, motor vehicles of the BEV type for the English acronym Battery Electric Vehicle are known, equipped with an electric motor, and motor vehicles of the PHEV type, for the English acronym Plug-in Hybrid Electric , equipped with both a combustion engine and an electric engine. These motor vehicles are equipped with a battery pack fixed by means of fastening to a body of said motor vehicle, at the side members. The fixing means comprise screws housed in inserts. The inserts are formed on the longitudinal members of the motor vehicle, in particular at the level of an interior longitudinal member of the body.

The battery pack, comprising a battery box housing electric batteries, is a heavy unit, weighing approximately 400 kg. It is therefore necessary to have a large number of screws correlated with the dimensions of said screws, the screws having to respond to an adequate dimensioning to support this mass. It is known to fix the battery pack laterally on the longitudinal members by ten screws, distributed by two sets of five screws on either side of the battery pack. It is also known to fix the battery pack in its center with four additional screws fixing the battery pack on a seat cross member of the body of the motor vehicle.

The disadvantage of these battery pack fixing means is that they are tedious to assemble and disassemble, whether on a motor vehicle assembly line or after-sales. They negatively impact the production time of the motor vehicle. In addition, the battery pack fixed by these fixing means induce high local pressures at the level of the screws, inducing a significant risk of caulking.

The object of the present invention is to propose a new assembly arrangement for a motor vehicle in order to respond at least in large part to the above problems and also to lead to other advantages.

Another object of the invention is to provide an assembly arrangement for a simple motor vehicle, both from the point of view of its implementation and from the point of view of its manufacture.

Another object of the invention is to propose an assembly arrangement for a motor vehicle which is configured to limit the number of operations necessary for its assembly, so as to optimize the production time of the motor vehicle which is equipped with it.

Another object of the invention is to provide an assembly arrangement for a motor vehicle facilitating the assembly and disassembly of a battery pack.

Another object of the invention is to propose an assembly arrangement for a motor vehicle guaranteeing a better distribution of the tightening forces between the body and the battery pack of the motor vehicle which is equipped with it.

According to a first aspect of the invention, at least one of the aforementioned objectives is achieved with an assembly arrangement for a motor vehicle, the assembly arrangement comprising: (i) a side member of the motor vehicle, the side member comprising a bottom wall on which are formed a plurality of slots aligned with each other in a rectilinear profile, (ii) an electrical assembly housed in a housing, the housing comprising a lateral fixing lug resting against a first face of the lower wall of the side spar, the side lug comprising at least one through opening and at least two fixing pins projecting from the lateral lug, each pin passing through one of the corresponding openings of the lateral spar, (iii) a fixing strip resting against a second face of the lower wall, the second face being opposite the first face, the fixing strip comprising a plurality é of openings, each opening comprising an insertion zone configured to allow the insertion of a head of one of the fixing pins and a locking zone configured to allow blocking of the head of the fixing pin.

In the motor vehicle equipped with the assembly arrangement in accordance with the first aspect of the invention, the side sill is included in a structure of the motor vehicle.

In the assembly arrangement according to the first aspect of the invention, the lower wall of the side spar comprises the first face opposite the second face. Advantageously, the lower wall of the side spar takes the form of a plate.

In the assembly arrangement according to the first aspect of the invention, the lower wall is called "lower" in reference to its arrangement with respect to other walls of said side member arranged above said lower wall in the vehicle automobile equipped with the assembly arrangement according to the invention. In the side member of the motor vehicle equipped with the assembly arrangement according to the invention, the first face of the lower wall is below the second face of the lower wall.

In the assembly arrangement according to the first aspect of the invention, the lights of the side spar are aligned with each other in a rectilinear profile. We understand that the lights are aligned with respect to the same straight line. The plurality of lights includes at least two lights.

In the assembly arrangement according to the first aspect of the invention, the electrical assembly housed in the casing is an electric battery. It is understood that the electric battery forming the electric assembly makes it possible to supply electrical energy to a motor vehicle with electric or hybrid motorization.

In the assembly arrangement according to the first aspect of the invention, the fixing strip rests against the second face of the lower wall. It is understood that the fixing strip rests by its own weight against the second face of the lower wall and/or is held in abutment by any other means. The fixing strip comprising a plurality of openings. The plurality of apertures includes at least two apertures.

In the assembly arrangement in accordance with the first aspect of the invention, the at least two pins of the side lug make it possible to facilitate the indexing of the box on the side beam, by collaboration between the at least two pins and the zone inserting at least two of the fastening strip openings, a pin collaborating with an opening.

In the assembly arrangement in accordance with the first aspect of the invention, the fixing strip is configured to be able to be moved relative to the lower wall of the side beam, advantageously by sliding against said lower wall.

In the assembly arrangement according to the first aspect of the invention, the at least two fixing pins of the side lug make it possible to join the box to the side beam, through the collaboration of the at least two pins and the locking zone of at least two of the fastening strip openings, a pin collaborating with an opening. It is understood that when each locking zone collaborates with a pin, the collaboration between the housing and the side rail is locked.

In the assembly arrangement in accordance with the first aspect of the invention, when the at least two pins are all engaged respectively in one of the openings of the fixing strip, the fixing strip is configured to slide in order and cause them to collaborate each pawn with, alternatively, either the insertion zone or the locking zone.

In the assembly arrangement according to the first aspect of the invention, it is understood that, compared to previous solutions, the at least two fixing pins of the lateral lug are sufficient to ensure reliable and mechanically strong fixing of the housing on the side spar, the fixing strip allowing a distribution of the forces on the lower wall of the lateral spar. In other words, the fixing strip limits the local pressures and the risks of caulking associated with the level of the at least two fixing pins.

In the assembly arrangement according to the first aspect of the invention, the fixing strip is intended to reinforce the mechanical strength of the assembly arrangement according to the invention against the constraints imposed by a mass of the electrical assembly. . In other words, the invention allows a better distribution of the clamping forces of the box housing the electrical assembly on the side beam compared to the solutions of the prior art. Advantageously, the fixing strip takes an elongated and narrow shape reminiscent of that of a band.

In the assembly arrangement according to the first aspect of the invention, the at least one through opening of the side bracket is intended to allow the passage of a screw to clamp the fixing strip, the lower wall of the side spar and the lateral fixing lug of the casing. When the screw clamps the fixing strip, said fixing strip is locked in its sliding relative to the side beam.

Such an assembly arrangement makes it possible to ensure rapid assembly and disassembly of the casing and the side rail. Thus, this solution makes it possible to reduce the assembly and disassembly time of the side rail and the box housing the electrical assembly. In addition, this assembly is easy and simple to implement. The assembly arrangement according to the invention has the advantage of overcoming the drawbacks mentioned above.

The assembly arrangement in accordance with the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination:

- each fixing pin has a cylindrical body which projects from the side tab, the cylindrical body being surmounted by the head. It is understood that a cross section of each fixing pin, taken at the level of the cylindrical body, is formed by a closed contour, for example of circular or polynomial shape. Advantageously, the cross section of each fixing pin, taken at the level of its cylindrical body, is invariant in shape and in dimension between the head of the fixing pin and the side tab;

- the head has lateral dimensions greater than those of the cylindrical body. In particular, a diameter of the head is greater than a diameter of the cylindrical body. For example, the diameter of the head of the fixing pin is 10 mm and the diameter of the cylindrical body is 5 mm. It is understood that the fixing pin is dimensioned in such a way that the insertion of its cylindrical body is authorized in the locking zone and in the zone of insertion of the openings of the fixing strip, as well as in one slots in the lower wall of the spar; It is understood that the fixing pin is dimensioned in such a way that the passage of the head is prohibited through the locking zone, is authorized through the opening of the lower wall of the spar and is authorized through the insert area;

- the head of a fixing pin takes the form of a flat disc. Such a pin head improves distribution of the pressure forces and offers a larger contact surface between the fixing pin and the fixing strip, on the periphery of the locking zone;

- the fixing strip has a rectangular profile. Such a fixing strip profile is easily manipulated by an operator, in particular when said fixing strip is moved by sliding relative to the side beam. It is understood that the fixing strip cooperates with the side beam by sliding along a main extension axis of the fixing strip, the main extension axis of the fixing strip extending in the largest of the lateral dimensions of the rectangular profile;

- all the openings made on the fixing strip are aligned. It is understood that the centers of each of the openings are aligned on the same straight line;

- the openings are regularly distributed among each other, a distance between two adjacent openings being constant. By regularly distributed, it is understood that the openings are arranged at constant intervals. Such a fixing strip is more resistant to mechanical deformation;

- the insertion zone and the locking zone together present a shape of a lock. In this configuration, the locking zone takes the form of a long and narrow opening like a slit open at one of its ends on the insertion zone. The insertion area takes on a larger shape compared to the locking area;

- the insertion zone and the locking zone are delimited by a circular outline, a diameter of the insertion zone being greater than a diameter of the locking zone. Thus, the insertion zone makes it easier to insert the head of one of the fixing pins and the locking zone makes it easier to block the head of the fixing pin;

- the locking zone is configured to be able to retain the head of the corresponding fixing pin. By retaining the fixing pin by its head, the locking zone locks the positioning of the fixing pin;

- the assembly arrangement comprises at least one guide rail integral with the first face of the lower wall of the side beam. The guide rail is configured to cooperate with the fixing strip in order to guide its movement by translation, according to a sliding along said guide rail, relative to the lateral spar, on the side of the lower wall of said spar. Advantageously, the guide rail is configured to press the fixing strip against the second face of the lower wall of the side beam;

- the at least one guide rail is attached and fixed integrally to the lower wall of the spar, for example by welding;

- Preferably the assembly arrangement comprises two guide rails, so that the fixing strip can slide longitudinally in a locking direction parallel to the guide rails;

- the assembly arrangement comprises a stopper located at each longitudinal end of the at least one guide rail, the stopper being configured to abut the fixing strip. The stopper projects from each longitudinal end of the at least one guide rail. The stopper is intended to block the fixing strip longitudinally. Thus, the stopper is configured to limit the amplitude of the displacement by translation of the fixing strip;

- the assembly arrangement comprises at least one fixing member configured to clamp together the fixing strip, the lower wall of the side rail and the side fixing lug of the box. The fixing device secures the fixing strip, the lower wall of the side rail and the side bracket of the box. It is understood that the fixing member is implemented in the assembly arrangement according to the invention when the locking zone of the opening of the fixing strip collaborates with the fixing pin. The fixing device fixes the fixing strip integrally to the lower wall of the side sill. The fixing device makes it possible to secure the fixing of the box on the side rail. In general, the at least one fixing member makes it possible to immobilize the fixing strip relative to the housing and to the side rail by any detachable fixing means;

- the at least one fixing member comprises a threaded insert integral with the fixing strip and a screw passing through the side fixing lug of the housing and the lower wall of the side beam, the screw collaborating with the threaded insert . The screw passes through the through opening of the mounting bracket;

- the threaded insert is attached and fixed firmly to the fixing strip. In this configuration, the fixing strip and the threaded insert are obtained during two independent manufacturing processes, and assembled moreover, advantageously by a permanent fixing means, for example by welding;

- the assembly arrangement comprises two fixing devices located at each longitudinal end of the fixing strip. Two fixing members located at each longitudinal end of the fixing strip are spaced from each other in the assembly arrangement according to the invention. Two fixing devices located at each longitudinal end of the fixing strip reliably immobilize the fixing strip, the lower wall of the side spar and the lateral casing fixing lug.

According to a second aspect of the invention, a motor vehicle is proposed comprising the assembly arrangement in accordance with the first aspect of the invention or according to any one of its improvements, in which the electrical assembly housed in the housing is an electric battery.

The motor vehicle according to the second aspect of the invention is for example of the BEV type for the English acronym Battery Electric Vehicle , equipped with an electric motor. The motor vehicle in accordance with the second aspect of the invention is for example of the PHEV type, for the English acronym Plug-in Hybrid Electric , equipped with both a combustion engine and an electric engine.

In the motor vehicle according to the second aspect of the invention, the side member is included in a structure of said motor vehicle.

Various embodiments of the invention are provided, integrating according to all of their possible combinations the various optional characteristics set out here.

Other characteristics and advantages of the invention will become apparent through the description which follows on the one hand, and several embodiments given by way of indication and not limiting with reference to the appended diagrammatic drawings on the other hand, on which :

illustrates a schematic view of a motor vehicle according to the second aspect of the invention;

illustrates a schematic view of an assembly arrangement according to the first aspect of the invention in a first configuration;

illustrates an assembly sequence of the assembly arrangement according to the first aspect of the invention shown in ;

illustrates a schematic view of an assembly arrangement according to the first aspect of the invention in a second configuration;

illustrates the assembly arrangement according to the first aspect of the invention shown in , viewed from below.

Of course, the characteristics, the variants and the different embodiments of the invention can be associated with each other, according to various combinations, insofar as they are not incompatible or exclusive of each other. In particular, variants of the invention may be imagined comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from to the state of the prior art.

In particular, all the variants and all the embodiments described can be combined with each other if nothing prevents this combination from a technical point of view.

In the figures, the elements common to several figures retain the same reference.

The illustrates a schematic view of a motor vehicle 1 according to the third aspect of the invention, seen from above. In the remainder of the description, a frame of reference is defined in which a longitudinal axis OX, a transverse axis OY and a vertical axis OZ are defined. The longitudinal axis OX corresponds to a trajectory of the motor vehicle when it is in forward motion, in a straight line and on a flat road. The longitudinal axis OX corresponds to a direction running from the front to the rear of the motor vehicle, and it is oriented from the front to the rear of the motor vehicle. A longitudinal direction parallel to the longitudinal axis OX is also defined, the adjectives "front", "rear" or "front" refer to this reference direction, the term "length" also. The transverse axis OY corresponds to the axis around which the wheels of the motor vehicle rotate, and the direction of the axis OY is oriented from a passenger side to a driver's side, in the non-Anglo-Saxon standard. A transverse direction parallel to the transverse axis OY is also defined, and the adjectives “lateral” or “transverse” refer to this reference direction, the term “width” also. The vertical axis OZ is an axis perpendicular simultaneously to the axis OX and to the axis OY, and which is oriented from a floor of the motor vehicle towards a roof of said motor vehicle, the adjectives "upper" and "lower" refer to this reference direction, the term "height" also.

The motor vehicle 1 according to the second aspect of the invention shown in is of the electric type. The motor vehicle 1 comprises an assembly arrangement 2 in accordance with the first aspect of the invention. The assembly arrangement 2 according to the invention is fixed to a structure 3 of the motor vehicle 1, under a floor 4 of said motor vehicle 1.

The illustrates a schematic view of the assembly arrangement 2 according to the first aspect of the invention in a first configuration. The assembly arrangement 2 according to the invention comprises a side member 5 of the motor vehicle 1, an electrical assembly 6 housed in a box 7, a fixing strip 8. In this case, the electrical assembly 6 housed in the housing 7 is an electric battery. The housing 7 comprises a lateral bracket 10 for fixing comprising at least two pins 9 for fixing. In this case, the lateral tab 10 for fixing comprises four pins 9 for fixing. In the assembly arrangement 2 according to the first aspect of the invention shown in , the lateral spar 5, the housing 7 and the fixing strip 8 are shown separated to facilitate understanding of the invention.

The shows that the lateral spar 5 of the assembly arrangement 2 according to the invention comprises a lower wall 11. The lower wall 11 of the lateral spar 5 is opposite an upper wall 12. The lateral spar 5 comprises an internal portion 13 fixed integrally with an outer portion 14 of the side beam 5, the inner portion 13 of the side beam 5 being between the housing 7 and the outer portion 14 of the side beam 5 in the assembly arrangement 2 according to the invention. In the internal portion 13 of the lateral spar 5, an internal lateral wall 15 of the lateral spar 5 connects the lower wall 11 of the lateral spar 5 to the upper wall 12 of the lateral spar 5.

The shows that, on the lower wall 11 of the lateral spar 5 of the assembly arrangement 2 according to the invention, taken at its internal portion 13, a plurality of slots 16, 17 is formed. The slots 16, 17 are aligned with each other in a rectilinear profile. In this case, the slots 16, 17 are aligned with each other in a rectilinear profile extending from front to back in the direction OX in the assembly arrangement 2 according to the invention. The plurality of lights 16, 17 comprises six lights 16, 17. Two of the lights 16, 17, called end lights 16, located one and the other at the ends of the plurality of lights 16, 17, are each intended at the passage of a screw. The other slots 17 of the plurality of slots 16, 17 are each intended for the passage of one of the fixing pins 9 of the lateral lug 10 for fixing the case 7.

The shows that the lower wall 11 of the side beam 5 of the assembly arrangement 2 according to the invention comprises a first face 18 opposite a second face 19. In the motor vehicle 1, the first face 18 is below the second side 19.

The shows that the casing 7 comprises a lower face 20 opposite an upper face 21, the lower face 20 of the housing 7 being connected to the upper face 21 of the housing 7 by a side face 22 of the housing 7 intended to extend parallel to the wall inner side 15 of the lateral spar 5 in the assembly arrangement 2 according to the invention.

The shows that the lateral fixing lug 10 projects from the side panel 22 of the housing 7. The lateral fixing lug 10 is intended to bear against the first face 18 of the lower wall 11 of the side beam 5 in the arrangement of assembly 2 according to the invention. The lateral fixing tab 10 is located in a position proximal to the lower face 20 of the casing 7 and in a distal position to the upper face 21 of the housing 7. The lateral fixing tab 10 extends substantially parallel to the lower wall 11 of the lateral spar 5.

The shows that the lateral tab 10 for fixing comprises at least one through opening 23 and at least two pins 9 for fixing. In this case, the side tab 10 for fixing comprises two through openings 23, one at the front, the other at the rear of the side tab 10 for fixing. In this case, the lateral tab 10 for fixing comprises four pins 9 for fixing. The four fixing pins 9 are included between the two through openings 23. The four fixing pins 9 are intended to pass simultaneously through one of the corresponding slots 17 of the side beam 5 in the assembly arrangement 2 according to the invention.

The shows that the fixing strip 8 of the assembly arrangement 2 according to the invention has a rectangular profile intended to bear against the second face 19 of the lower wall 11 of the side beam 5 in the assembly arrangement 2 according to the invention.

The shows that the fixing strip 8 of the assembly arrangement 2 according to the invention comprises a plurality of openings 24 aligned. The openings 24 are regularly distributed among each other from front to back, a distance 25 between two adjacent openings 24 being constant.

The shows an assembly sequence of assembly arrangement 2 according to the first aspect of the invention shown in . The shows the fixing strip 8 resting on the first face 18 of the lower wall 11 of the side member 5. The side lug 10 for fixing the housing 7 is also shown. Only one of the openings 17 of the lateral spar 5, only one of the openings 24 of the fixing strip 8 and only one of the fixing pins 9 are shown, but it is understood that the assembly sequence is identical and simultaneous at all the openings 24 of the fastening strip 8 of the assembly arrangement 2 according to the invention.

The comprises a first line 301, representing the assembly sequence seen from above, and, under the first line 301, a second line 302, representing the assembly sequence according to a longitudinal section AA shown in the first line 301.

A first insert 311 of the illustrates the fixing pin 9, separated from the lateral spar 5 and separated from the fixing strip 8 in the assembly arrangement 2 according to the invention.

The first insert 311 of the shows that each opening 24 of the fastening strip 8 comprises an insertion zone 26 open onto a locking zone 27. The insertion zone 26 and the locking zone 27 together have the shape of a lock, seen from above. The insertion zone 26 and the locking zone 27 are delimited by a circular contour, a diameter 28 of the insertion zone 26 being greater than a diameter 29 of the locking zone 27.

The first insert 311 of the shows that the fixing strip 8 is placed on the second face 19 of the lower wall 11 of the lateral spar 5 so that the opening 17 of the lateral spar 5 is coaxial with the insertion zone 26 of the opening 24 of the fixing strip 8.

The first insert 311 of the shows the fixing pin 9 extends projecting from an upper surface 30 of the side fixing tab 10 opposite to a lower surface 31 of the side fixing tab 10. The fixing pin 9 comprises a cylindrical body 32 which projects from the lateral fixing lug 10, the cylindrical body 32 being surmounted by a head 33. The head 33 of the fixing pin 9 takes the form of a flat disc. The head 33 of the fixing pin 9 has lateral dimensions greater than those of the cylindrical body 32 of the fixing pin 9. In particular, a diameter 34 of the head 33 of the fixing pin 9 is greater than a diameter 35 of the cylindrical body 32 of the fixing pin 9. The diameter 34 of the head 33 of the fixing pin 9 is smaller than the diameter 28 of the insertion zone 26 and larger than the diameter 29 of the locking zone 27. The diameter 35 of the cylindrical body 32 of the pin 9 fixing is smaller than the diameter 29 of the locking zone 27.

In the first line 301 of the , the cylindrical body 32 of the fixing pin 9 is shown in dotted lines, by transparency. In the first insert 311 of the , the fixing pin 9 is coaxial with the opening 17 of the lateral spar 5 and with the insertion zone 26 of the opening 24 of the fixing strip 8.

A second insert 312 of the illustrates the fixing pin 9, associated with the lateral spar 5 and the fixing strip 8, in an insertion configuration 100. The box 7 is raised in the direction OZ, from bottom to top, as shown by a first arrow 101 , so that the fixing pin 9, coaxial with the opening 17 of the lateral spar 5 and the insertion zone 26 of the opening 24 of the fixing strip 8, is inserted simultaneously into said opening 17 and said insertion zone 26. The housing 7 is raised in the direction OZ until the upper surface 30 of the lateral fixing lug 10 bears against the first face 18 of the lower wall 11 of the lateral spar 5 . The second insert 312 of the illustrates that the insertion zone 26 is configured to allow the insertion of the head 33 of the fixing pin 9. To maintain this insertion configuration 100, it is necessary to keep the case 7 raised.

A third insert 313 of the illustrates the fixing pin 9, associated with the side beam 5 and the fixing strip 8, in a locking configuration 200. To pass from the insertion configuration 100 to the locking configuration 200, the fixing strip 8 is moved according to a translation movement represented by a second arrow 201 and oriented in a locking direction. It is understood that a reverse translational movement to the second arrow 201, makes it possible to pass from the locking configuration 200 to the insertion configuration 100, in order to dissociate the housing 7 from the lateral spar 5. The third insert 313 of the shows that the locking zone 27 is sized to allow passage of the cylindrical body 32 of the fixing pin 9. The locking zone 27 is sized to allow blocking of the head 33 of the fixing pin 9. As described in the first insert 301 of the , the locking zone 27 is sized to enable the head 33 of the fixing pin 9 which is inserted therein to be retained. In the locking configuration 200, the head 33 of the fixing pin 9 bears against a periphery 36 of the locking zone 27.

It is understood that, in accordance with the invention, the association of the fixing strip 8 and the fixing pins 9 allows sufficient support of the housing 7 housing the electrical assembly 6. Furthermore, associating or disassociating the fixing strip 8 and the fixing pins 9 advantageously require reduced handling time compared to known prior art solutions for associating or disassociating the housing 7 and the lateral beam 5 .

The illustrates a bottom view of the assembly arrangement 2 according to the invention in a second configuration, in the locking configuration 200.

In the , the four fixing pins 9 pass simultaneously through one of the corresponding slots 17 of the lateral spar 5, and through one of the corresponding openings 24 of the fixing strip 8, the slots 17 being not visible in the . It is understood that in the locking configuration 200, each fixing pin 9 passes through the locking zone 27, not visible in the .

The assembly arrangement 2 according to the invention shown in comprises two guide rails 37 both fixed by welding to the second face 19 of the lower wall 11 of the side beam 5 configured to guide the fixing strip 8, longitudinally in a locking direction parallel to the guide rails 37 .

The assembly arrangement 2 according to the invention shown in comprises a stopper 38 located in front of a front longitudinal end 39 of the guide rails 37, the front longitudinal end 39 being opposite a rear longitudinal end 40 of the guide rails 37.

The shows that the guide rails 37 and the fixing strip 8 have a substantially identical longitudinal dimension, smaller than a longitudinal dimension of the lower wall 11 of the side member 5.

The assembly arrangement 2 according to the invention shown in comprises at least one fixing member 41, in this case two fixing members 41 located at each longitudinal end 42, 43 of the fixing strip 8.

The fasteners 41 include a threaded insert 44 integral with the fastening strip 8, visible in , and a screw, not shown, the screw cooperating with the threaded insert 44 and passing through the side lug 10 for fixing the housing 7 and the bottom wall 11 of the lateral spar 5 .

The fixing members 41 clamp together the fixing strip 8, the lateral spar 5 and the lateral lug 10 for fixing the box 7. The assembly arrangement 2 according to the invention is thus maintained in the locking configuration 200.

The illustrates the assembly arrangement 2 according to the first aspect of the invention shown in , viewed from below. In the , the side lug 10 for fixing the housing 7 bears against the first face 18 of the bottom wall 11 of the lateral spar 5 . The lateral fixing lug 10 is held in abutment against the first face 18 of the lower wall 11 of the lateral spar 5 by the fixing members 41.

The shows that the side bracket 10 for fixing has a smaller longitudinal dimension than a longitudinal dimension of the lower wall 11 of the side member 5.

In summary, the invention relates to an assembly arrangement 2 for a motor vehicle 1, the assembly arrangement 2 comprising a side member 5 of the motor vehicle 1, an electrical assembly 6 housed in a housing 7 and a fixing strip 8 The lateral spar 5 comprises a lower wall 11 on which are provided a plurality of slots 16, 17 aligned with each other along a rectilinear profile. The casing 7 comprises a lateral lug 10 for fixing bearing against a first face 18 of the lower wall 11 of the lateral spar 5 opposite a second face 19 of said lower wall 11. The lateral lug 10 comprises at least one through opening 23 and at least two fixing pins 9 projecting from the side tab 10, each fixing pin 9 passing through one of the slots 16, 17 corresponding to the side member 5. The fixing strip 8 bears against the second face 19 of the lower wall 11, the fixing strip 8 comprising a plurality of openings 24, each opening 24 comprising an insertion zone 26 configured to allow the insertion of a head 33 of one of the fixing pins 9 and a locking zone 27 configured to allow blocking of the head 33 of the fixing pin 9.

Of course, the invention is not limited to the examples which have just been described and many adjustments can be made to these examples without departing from the scope of the invention. In particular, the different characteristics, forms, variants and embodiments of the invention may be associated with each other in various combinations insofar as they are not incompatible or exclusive of each other. In particular, all the variants and embodiments described above can be combined with each other.

Claims (10)

Assembly arrangement (2) for a motor vehicle (1), the assembly arrangement (2) comprising:
- a lateral spar (5) of the motor vehicle (1), the lateral spar (5) comprising a lower wall (11) on which are provided a plurality of slots (16, 17) aligned with each other according to a rectilinear profile ;
- an electrical assembly (6) housed in a casing (7), the casing (7) comprising a lateral lug (10) for fixing resting against a first face (18) of the lower wall (11) of the spar (5) side, the side tab (10) comprising at least one through opening (23) and at least two fixing pins (9) extending projecting from the side tab (10), each pin (9) passing through one of the slots (17) corresponding to the lateral spar (5);
- a fixing strip (8) bearing against a second face (19) of the lower wall (11), the second face (19) being opposite the first face (18), the fixing strip (8) comprising a plurality of openings (24), each opening (24) comprising an insertion zone (26) configured to allow the insertion of a head (33) of one of the fixing pins (9) and a locking zone (27) configured to allow blocking of the head (33) of the fixing pin (9). Assembly arrangement (2) according to the preceding claim, in which the openings (24) are regularly distributed among each other, a distance (25) between two adjacent openings (24) being constant. Assembly arrangement (2) according to any one of the preceding claims, in which the insertion zone (26) and the locking zone (27) are delimited by a circular contour, a diameter (28) of the zone d insertion (26) being greater than a diameter (29) of the locking zone (27). Assembly arrangement (2) according to any one of the preceding claims, in which the locking zone (27) is configured to be able to retain the head (33) of the corresponding fixing pin (9). Assembly arrangement (2) according to any one of the preceding claims, in which the assembly arrangement (2) comprises at least one guide rail (37) integral with the first face (18) of the lower wall ( 11) of the side member (5). Assembly arrangement (2) according to the preceding claim, in which the at least one guide rail (37) is attached and fixed integrally to the lower wall (11) of the spar (5), for example by welding. Assembly arrangement (2) according to any one of claims 5 or 6, in which the assembly arrangement (2) comprises a stopper (38) located at each longitudinal end (39, 40) of the at least one guide rail (37), the stopper (38) being configured to abut the fixing strip (8). Assembly arrangement (2) according to any one of the preceding claims, in which the assembly arrangement (2) comprises at least one fastening member (41) configured to clamp together the fastening strip (8), the lower wall (11) of the lateral spar (5) and the lateral lug (10) for fixing the casing (7). Assembly arrangement (2) according to any one of the preceding claims, in which the at least one fixing member (41) comprises a threaded insert (44) secured to the fixing strip (8) and a screw passing through the through the lateral lug (10) for fixing the housing (7) and the lower wall (11) of the side member (5), the screw collaborating with the threaded insert. Motor vehicle (1) comprising the assembly arrangement (2) according to any one of the preceding claims, in which the electrical assembly (6) housed in the casing (7) is an electric battery .