Floor arrangement for a motor vehicle

Abstract

The invention relates to a floor arrangement (1) for a motor vehicle, the floor arrangement (1) comprising a closing cover (11) of a battery tray of the motor vehicle, two side rails (12) extending along a longitudinal axis (X) of the motor vehicle and being located on either side of the closing cover (11), a lower apron which extends the closing cover (11) along a longitudinal axis (X) of the motor vehicle, the lower apron delimiting a cavity located on the side of each side rail (12), two drainage channels (14) for a cataphoresis fluid, the drainage channels (14) being located between an inner rebate (121) of the side rails (12) on the one hand and, on the other hand, a peripheral side (112) of the closing cover (11) and / or a lateral flap of the lower apron.The drainage channels (14) thus allow the cataphoresis fluid to flow towards a drain segment arranged on the lower rebate (122) of the lateral stringers (12). Figure to be published with the abbreviation: Fig. 2.

Description

Title of the invention: Floor arrangement for a motor vehicle

[0001] The technical context of the present invention is that of industrial production optimization elements for large parts used in the manufacture of motor vehicles, and in particular those located under the passenger compartment. More specifically, the invention relates to a floor arrangement for a motor vehicle.

[0002] In the prior art, floor arrangements extending under the passenger compartment and supporting seats for the vehicle's occupants are known. Such floor arrangements thus define a substantially flat surface extending longitudinally from front to rear and transversely between two side members of the vehicle. Naturally, such a floor is optionally supported by one or more side members.

[0003] At the front of the floor, a front apron is known to exist which extends forward from the front floor of the floor arrangement to an engine compartment of the motor vehicle. The front apron thus closes the floor arrangement at the front, at the level of the passenger compartment footwells, directly above a dashboard of the passenger compartment.

[0004] To prevent premature rusting of motor vehicle chassis components, the cataphoresis process is known. This process involves immersing the chassis components in a bath of water-soluble anti-rust paint. The immersed chassis components are polarized by an electric current, causing the paint particles suspended in the bath to migrate and deposit onto the chassis components. This process ensures a uniform application of the anti-rust paint to all immersed chassis components.

[0005] However, for complete application of the paint during the bath, all surfaces must be immersed and in contact with the bath. Therefore, the geometry of the known chassis elements must not form closed parts, nor include any features that could retain the applied anti-rust paint.

[0006] Now, on known floor arrangements, cavities forming closed depressions are known to be present on a lower deck located below the forward floor. These cavities are located on the lower deck and along the lateral edges of the known floor arrangements, against the lateral stringers that support such floor arrangements. However, during the implementation of cataphoresis, the known floor arrangements thus immersed in a cataphoresis bath do not allow the fluid from the bath to drain once the removal of the floor arrangement from said bath. In other words, there is a residue at the bottom of these cavities which is not desired.

[0007] The present invention aims to propose a new floor arrangement in order to address at least largely the previous problems and to lead to further advantages.

[0008] Another object of the invention is to promote the flow of the cataphoresis fluid out of any surface of the floor arrangement, and in particular out of the cavities mentioned above.

[0009] Another object of the invention is to offer such a floor arrangement at a lower cost and without adding material.

[0010] According to a first aspect of the invention, at least one of the aforementioned objectives is achieved with a floor arrangement for a motor vehicle, the floor arrangement comprising:

[0011] - a closing cover for a battery tray of the motor vehicle, the cover of closure comprising an upper face forming a floor for a passenger compartment of the motor vehicle, peripheral sides extending from a peripheral edge of the upper face, the peripheral sides comprising a lower curb located at the level of a free end of said peripheral sides;

[0012] - two lateral longitudinal members extending along a longitudinal axis of the vehicle automobile, the side rails being located on either side of the closing hood along a transverse axis of the motor vehicle, the closing hood being integral with each side rail;

[0013] - a lower apron that extends the closing cover along a longitudinal axis of the motor vehicle.

[0014] In the floor arrangement according to the invention, the floor arrangement includes at least one discharge channel for a cataphoresis fluid, each at least one discharge channel being located between at least one of the side rails on the one hand and, on the other hand, the peripheral side of the closing hood and / or a side flap of the lower deck located opposite at least one side rail, the at least one discharge channel being configured to allow a flow of cataphoresis fluid along at least one side rail.

[0015] In the context of the present invention, a longitudinal axis, a lateral axis, and a vertical axis are defined with respect to the motor vehicle on which the floor arrangement according to the first aspect of the invention is intended to be mounted. More particularly, the transverse axis is understood as a direction taken between one lateral side of the motor vehicle and an opposite lateral side of said motor vehicle. In other words, the transverse axis is understood as a direction extending from a passenger side of the motor vehicle to a driver's side of said vehicle. automobile, or vice versa. The adjectives lateral, interior, and exterior refer to such a transverse axis. Furthermore, the longitudinal axis is understood as being taken along a direction extending from the front to the rear or from the rear to the front of the motor vehicle. The longitudinal axis is perpendicular to the transverse axis. The adjectives front, front, and rear refer to this longitudinal axis. Finally, the vertical axis is understood as being taken along an axis extending from the wheels of the motor vehicle to the roof of said motor vehicle, or vice versa, the vertical axis being simultaneously perpendicular to the transverse axis and the longitudinal axis. The adjectives above and below, or lower and upper, refer to this vertical axis.

[0016] In the context of the present invention, the closing cover serves both as a floor for the passenger compartment, and in particular as a rear floor, and as a closing cover for the battery tray. The upper surface forms the floor itself. In the context of the present invention, the floor extends under the passenger compartment and allows for the subsequent attachment of seats for the occupants of the motor vehicle. The floor defines a substantially flat surface that extends longitudinally from front to rear and transversely between two side members of the motor vehicle. Relative to the vertical axis, above the floor is the passenger compartment of the motor vehicle and below the floor are transmission components in the case of an internal combustion engine vehicle or a battery module in the case of a hybrid or electric vehicle.

[0017] In the context of the present invention, the upper face is encircled by peripheral sides that project perpendicularly or substantially perpendicularly from the upper face. The peripheral sides are oriented downwards along the vertical axis of the motor vehicle when the arrangement is installed on said motor vehicle. The peripheral sides extend along a front edge, a rear edge, or lateral edges of the upper face. The peripheral sides extend in a closed contour that follows the peripheral edges of the upper face of the cover. Finally, to allow for effective and possibly watertight attachment of the cover to the battery tray, the peripheral sides are extended by the lower edge at a distance from the upper face. The lower edge extends at an angle to the peripheral sides.The lower curb is oriented outwards relative to the peripheral sides. The lower curb extends parallel or substantially parallel to the upper face of the closing cover.

[0018] In the context of the present invention, the side members each form a prismatic span which extends relative to the longitudinal axis of the vehicle automobile, at each lateral edge of said motor vehicle. Generally speaking, the side members comprise:

[0019] - an internal rebate which is intended to be placed against or opposite longitudinal sections of the peripheral sides of the closing cover. The internal rebate extends mainly in a plane defined by the longitudinal axis and the vertical axis;

[0020] - a lower rebate extending from a lower edge of the rebate interior. The lower rebate is formed by folding from the interior rebate. The interior rebate extends mainly in a plane defined by the longitudinal axis and the transverse axis;

[0021] - an external rebate that extends parallel to the internal rebate, in with regard to it and at the level of an outer lateral edge of the lower rebate. The outer rebate extends mainly in a plane defined by the longitudinal axis and the vertical axis.

[0022] Side members are structural elements of the motor vehicle to which other parts of the motor vehicle are attached. The side members thus provide the rigidity necessary for the operation of the motor vehicle, both during driving and in the event of an accident, in order to transmit the forces resulting from the impact towards absorption devices or to the vehicle's running gear, for example. Side members are generally made of steel profiles, which give the body structure its robustness.

[0023] In the context of the present invention, the lower apron is a structural element of the motor vehicle forming a lower, transverse partition made of lightweight sheet metal, located at the front of the floor of the floor arrangement, relative to the longitudinal axis. The front apron extends forward from the front floor of the floor arrangement to an engine compartment of the motor vehicle. The front apron thus closes the floor arrangement at the front, at the level of the footwells of the passenger compartment, directly above a dashboard of the passenger compartment.

[0024] In the context of the present invention, each at least one drainage channel forms a flow channel for the cataphoresis fluid to be discharged from the floor arrangement. Each drainage channel thus creates a space not previously provided in known floor arrangements, between one or both of the side rails and the peripheral side of the closing cover located opposite said side rail(s) – taken at its longitudinal extension – and / or at the lower deck. At its front longitudinal end, each at least one drainage channel opens into the lower deck. This advantageous configuration thus makes it possible to create a fluidic flow into or from areas that did not previously contain it, thus allowing the cataphoresis fluid to be evacuated from a part of the lower deck which formed retention areas in known floor arrangements.

[0025] Thus, the floor arrangement according to the first aspect of the invention solves the technical problem by offering a simple, efficient and inexpensive solution for evacuating the cataphoresis fluid out of the floor arrangement.

[0026] The floor arrangement according to 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:

[0027] - at least one drainage channel is provided at the level of an internal rebate of at least one lateral side member against the peripheral side of the closing hood and / or against the lateral flap of the lower apron. This advantageous configuration allows the cataphoresis fluid to circulate between the corresponding lateral side member and the closing hood, along the longitudinal axis in order to convey it to a drain zone located further back on the lower apron;

[0028] - at least one drainage channel is provided at the level of a folded edge of the less one side stringer, the folded edge delimiting the inner rebate and a lower rebate of said side stringer. In other words, each at least one drainage channel is provided at the level of a lower part of the corresponding side stringer, that is to say at the level of or just above its lower rebate, relative to the vertical axis;

[0029] - the folded edge has a chamfer that extends over at least part of the minus one side rail. This advantageous configuration makes it very easy to create sufficient space between at least one side rail and the peripheral side of the closing cover and / or with the side flap of the lower apron located opposite it. In the context of the present invention, the chamfer forms a straight face at the folded edge, so as to create a gap of at least one millimeter with the peripheral side and / or the side flap located opposite it. The gap is preferably measured along the transverse axis;

[0030] - the chamfer extends from a longitudinal end of at least one longeron lateral and along the longitudinal axis. This advantageous configuration facilitates the evacuation of the cataphoresis fluid trapped in the cavities of the lower deck. In particular, the lower deck delimits at least one cavity located on the side of at least one lateral spar, with at least one evacuation channel opening into the cavity of the lower deck at the longitudinal end of said at least one lateral spar;

[0031] - at least one discharge channel includes a drain segment which extends in across the lower rebate of at least one lateral stringer, towards an external rebate of said lateral stringer. The drain segment allows the cataphoresis fluid to be permanently evacuated from the floor arrangement according to the invention;

[0032] - the lower rebate of at least one side member has a stamped part which delimits the drain segment, the stamping extending from the folded edge of at least one side member to the outer rebate of said side member. Thus, the stamping allows for a passage under the lower rebate of the side member. The stamping thus forms a passage that rises along the vertical axis and extends along the transverse axis;

[0033] - in order to facilitate fluid communication between at least one discharge channel and the drain segment, the drain segment is located at one longitudinal end of the chamfer;

[0034] - the stamped part has a general trapezoidal conformation.

[0035] According to a second aspect of the invention, a motor vehicle is proposed comprising a floor arrangement conforming to the first aspect of the invention or to any one of its improvements.

[0036] The motor vehicle is preferably of the type of an electrified motor vehicle and comprising an electric traction battery housed in a battery box covered by the closing cover of the floor arrangement according to the invention.

[0037] In the context of the present invention, an electrified motor vehicle may be of the type of an electric vehicle pulled exclusively by an electric motor powered by a traction battery, or of the type of a hybrid motor vehicle comprising both the electric motor powered by the traction battery and associated with another propulsion system, such as an internal combustion engine, to propel the motor vehicle. Among hybrid motor vehicles, a distinction is made between plug-in hybrid vehicles, for which the traction battery can be recharged by connecting to an external power source, and non-plug-in hybrid vehicles, i.e., those not equipped for such recharging of the traction battery from an external electrical grid.

[0038] Generally, the drivetrain of such an electrified motor vehicle is rotated by an electric machine, powered by a traction battery, in order to generate motor torque for propelling the motor vehicle. Complementarily or alternatively, the electric machine is configured to recover mechanical energy from the drivetrain and convert it into electrical energy, thereby producing braking torque on the drivetrain and recharging the traction battery.

[0039] Various embodiments of the invention are provided, incorporating, according to all their possible combinations, the different optional features set out here.

[0040] Other features and advantages of the invention will become apparent from the following description on the one hand, and from several illustrative and non-limiting examples of embodiments given with reference to the accompanying schematic drawings on the other hand, in which:

[0041] [Fig-1] illustrates an overview of an example of an embodiment of a floor arrangement conforming to the first aspect of the invention;

[0042] [Fig.2] illustrates a detailed view of a cross-section of the arrangement of floor illustrated on [Fig.1];

[0043] [Fig.3] illustrates a side view of the floor arrangement shown in [Fig.1];

[0044] [Fig.4] illustrates a detailed view of a cross-section of the arrangement of floor illustrated in [Fig.3].

[0045] Of course, the features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the prior art.

[0046] In particular, all the variants and embodiments described are combinable with each other if there is no technical obstacle to this combination.

[0047] In the figures, the elements common to several figures retain the same reference.

[0048] In the FIGURES described below, a longitudinal axis X, a lateral axis and a vertical axis Z are defined relative to the motor vehicle on which the floor arrangement 1 according to the invention is intended to be mounted.

[0049] More specifically, the transverse axis Y is understood as a direction between one side of the motor vehicle and the opposite side of the same motor vehicle. In other words, the transverse axis Y is understood as a direction extending from a passenger side of the motor vehicle to a driver's side of the same motor vehicle, or vice versa. The adjectives lateral, interior, and exterior refer to such a transverse axis Y.

[0050] Furthermore, the longitudinal axis X is understood to be taken along a direction extending from front to back or from back to front of the motor vehicle. The axis The longitudinal axis X is perpendicular to the transverse axis Y. The adjectives frontal, front and rear refer to this longitudinal axis X.

[0051] Finally, the vertical axis Z is understood as being taken along an axis which extends from the wheels of the motor vehicle and towards the roof of said motor vehicle, or vice versa, the vertical axis Z being simultaneously perpendicular to the transverse axis Y and to the longitudinal axis X. The adjectives above and below, or lower and upper, refer to this vertical axis Z.

[0052] With reference to FIGURES 1 to 4, the invention addresses a floor arrangement 1 for a motor vehicle, the floor arrangement 1 comprising:

[0053] - a closing cover 11 of a battery tray of the motor vehicle, the cover closure 11 comprising an upper face 111 forming a floor for a passenger compartment of the motor vehicle, peripheral sides 112 extending from a peripheral edge of the upper face 111, the peripheral sides 112 comprising a lower curb 113 located at the level of a free end of said peripheral sides 112;

[0054] - two lateral longitudinal members 12 extending along a longitudinal axis X of the vehicle automobile, the side rails 12 being located on either side of the closing hood 11 along a transverse axis Y of the motor vehicle, the closing hood 11 being integral with each side rail 12;

[0055] - a lower apron 13 which extends the closing cover 11 along an axis longitudinal X of the motor vehicle, the lower apron 13 delimiting a cavity 131 located on the side of each lateral longitudinal member 12.

[0056] In the floor arrangement 1 according to the invention, the floor arrangement 1 comprises at least one discharge channel 14 for a cataphoresis fluid, each at least one discharge channel 14 being located between at least one of the side rails 12 on the one hand and, on the other hand, the peripheral side 112 of the closing hood 11 and / or a side flap of the lower deck 13, the at least one discharge channel 14 being configured to allow a flow of cataphoresis fluid along at least one of the side rails 12.

[0057] More particularly, according to a preferred embodiment of the invention, the floor arrangement 1 comprises exactly two drainage channels 14, each drainage channel 14 being associated with one of the lateral stringers 12, and each lateral stringer 12 being associated with a drainage channel 14.

[0058] It is understood that the invention makes it easier to evacuate the cataphoresis fluid that remained in the lower deck 131, and even at the level of its cavities 131, compared with previously known floor arrangements. This easier evacuation is made possible by the establishment of at least one drainage channel along one or both of the lateral stringers 12, relative to the axis longitudinal X, and between said lateral longitudinal members 12 and the lower apron 13 and / or the closing cover 11 located opposite. Of course, at its front longitudinal end, each at least one drainage channel 14 opens into the lower apron 13 and / or into the cavities 131.

[0059] More particularly, as seen in FIGURES 2 and 4, the side rails 12 are backed against the lower apron 13 and against the closing hood 11, relative to the transverse axis Y. More precisely, an internal rebate 121 of the side rails 12 is located opposite, and preferably against, a longitudinal extension part of a peripheral side 112 of the closing hood 11, and / or a longitudinal extension part of a lateral flap of the lower apron 13.

[0060] Also, in a particularly advantageous manner, at least one drainage channel 14 is provided between the inner rebate 121 of the corresponding side member 12 on the one hand and, on the other hand, the peripheral side 112 of the closing cover 11 and / or side flap of the lower apron 13 located opposite.

[0061] The at least one discharge channel 14 thus includes a longitudinal elongation portion between the flap and the lower apron 13 and / or the closing cover 11, said longitudinal elongation portion providing a circulation space for the cataphoresis fluid when the floor arrangement 1 is removed from the cataphoresis bath.

[0062] For this purpose, the drainage channel 14 is formed by shaping a folded edge 124 of at least one of the side rails 12, located at the junction between the inner rebate 121 and the lower rebate 122. More particularly, the folded edge 124 is modified so as to include a chamfer 141 which allows the side rail 12 - taken at the level of the chamfer 141 of the folded edge 124 - to be moved away from the surface located opposite the peripheral side 112 of the closing cover 11 and / or the lateral flap of the lower apron 13.

[0063] A chamfer width of at least one side rail 12 measures a few millimeters, preferably between 2 mm and 8 mm, measured along the folded edge 124, so as to provide a space of a few millimeters between the side rail 12 and the closing cover 11 and / or the lower apron 13, relative to the transverse axis Y.

[0064] Each at least one drainage channel 14 extends from a front longitudinal end of the associated lateral spar 12, located near the lower deck 13 and / or its cavity 131, so as to be able to efficiently drain the cataphoresis fluid out of said cavity 131. In particular, each drainage channel 14 opens into the lower deck 13 and / or the cavity 131.

[0065] Towards the rear, relative to the longitudinal axis X, each at least one discharge channel 14 opens onto a drain segment 143. The drain segment 143 allows the cataphoresis fluid circulating in the at least one channel to be discharged. evacuation 14. The drainage segment 143 is arranged at the level of at least one lateral longitudinal member 12 associated with the flow channel 14.

[0066] More particularly, the drain segment 143 is arranged between the lower rebate 122 of at least one side member 12 and the side 113 of the closing cover 11. In other words, the drain segment 143 has a gap arranged between the lower rebate 122 of at least one side member 12 and the side 113 of the closing cover 11. For this purpose, the lower rebate 122 of at least one side member 12 has a stamped part 142 forming such a gap.

[0067] As can be seen in FIGURES 3 and 4, the stamping 142 of at least one side member 12 extends over the lower rebate 122 and between the inner rebate 121 and an outer rebate of said side member 12. This advantageous configuration thus makes it possible to have more space for the drain segment 143, as can be seen in [Fig.3].

[0068] Thus, the cataphoresis fluid reaching the drain segment 143 can be evacuated by simple gravity flow out of the floor arrangement 1 by flowing from the drain segment 143 towards the outer rebate of at least one lateral stringer 12.

[0069] In summary, the invention relates to a floor arrangement 1 for a motor vehicle, the floor arrangement 1 comprising a closing cover 11 of a battery tray of the motor vehicle, two side rails 12 extending along a longitudinal axis X of the motor vehicle and being located on either side of the closing cover 11, a lower apron 13 which extends the closing cover 11 along a longitudinal axis X of the motor vehicle, the lower apron 13 delimiting a cavity 131 located on the side of each side rail 12, two drainage channels 14 for a cataphoresis fluid, the drainage channels 14 being located between an inner rebate 121 of the side rails 12 on the one hand and, on the other hand, a peripheral side 112 of the closing cover 11 and / or a lateral flap of the lower apron 13.The drainage channels 14 thus allow the cataphoresis fluid to flow towards a drain segment 143 arranged on the lower rebate 122 of the lateral stringers 12. .

[0070] Of course, the invention is not limited to the examples just described, and many modifications can be made to these examples without departing from the scope of the invention. In particular, the various features, forms, variants, and embodiments of the invention can be combined with one another in various ways, provided they are not incompatible or mutually exclusive. Specifically, all the variants and embodiments described above are combinable.

Claims

Demands

1. Floor arrangement (1) for a motor vehicle, the floor arrangement (1) comprising: - a closing cover (11) for a battery tray of the motor vehicle, the closing cover (11) comprising an upper face (111) forming a floor for a passenger compartment of the motor vehicle, peripheral sides (112) extending from a peripheral edge of the upper face (111), the peripheral sides (112) comprising a lower curb (113) located at the level of a free end of said peripheral sides (112); - two side members (12) extending along a longitudinal axis (X) of the motor vehicle, the side members (12) being located on either side of the closing cover (11) along a transverse axis (Y) of the motor vehicle, the closing cover (11) being integral with each side member (12);- a lower apron (13) which extends the closing hood (11) along a longitudinal axis (X) of the motor vehicle; characterized in that the floor arrangement (1) comprises at least one discharge channel (14) for a cataphoresis fluid, each at least one discharge channel (14) being located between at least one of the side members (12) on the one hand and, on the other hand, the peripheral side (112) of the closing hood (11) and / or a lateral flap of the lower apron (13) located opposite at least one side member (12), the at least one discharge channel (14) being configured to allow a flow of cataphoresis fluid along at least one side member (12).

2. Floor arrangement (1) according to the preceding claim, wherein at least one drainage channel (14) is provided at the level of an internal rebate (121) of at least one side member (12) backed against the peripheral side (112) of the closing cover (11) and / or against the side flap of the lower apron (13).

3. Floor arrangement (1) according to the preceding claim, wherein at least one drainage channel (14) is provided at the level of a folded edge (124) of at least one side member (12), the folded edge (124) delimiting the inner rebate (121) and a lower rebate (122) of said side member (12).

4. Floor arrangement (1) according to the preceding claim, wherein the folded edge (124) has a chamfer (141) which extends over at least a portion of at least one side member (12).

5. Floor arrangement (1) according to the preceding claim, wherein the chamfer (141) forms a straight face at the folded edge (124), so as to provide a gap of at least one millimeter with the peripheral side (112) and / or the side flap located opposite.

6. Floor arrangement (1) according to the preceding claim, wherein the chamfer (141) extends from a longitudinal end of at least one lateral stringer (12) and along the longitudinal axis (X).

7. Floor arrangement (1) according to the preceding claim, wherein the lower deck (13) delimits at least one cavity (131) located on the side of at least one lateral stringer (12), the drainage channel (14) opening into the cavity (131) of the lower deck (13) at the longitudinal end of said at least one lateral stringer (12).

8. Floor arrangement (1) according to the preceding claim taken in combination with claim 3, wherein at least one drainage channel (14) comprises a drain segment (143) which extends across the lower rebate (122) of at least one side member (12), in the direction of an outer rebate of said side member (12).

9. Floor arrangement (1) according to the preceding claim, wherein the lower rebate (122) of at least one side member (12) has a stamping (142) which delimits the drain segment (143), the stamping (142) extending from the folded edge (124) of at least one side member (12) to the outer rebate of said side member (12).

10. Motor vehicle comprising a floor arrangement (1) according to any one of the preceding claims.

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