FR3061682A1 - SUPPORT FOR ELECTRONIC HOUSING FOR MOTOR VEHICLE. - Google Patents

Abstract

The invention relates to a support 100 for fixing an electronic box 200 at a dashboard of a motor vehicle 1, the support 100 comprising a first fixing means for fixing an electronic box 200 equipped with a polarizer 120 and a second fixing means for fixing the support 100 on a crosspiece 11 of the dashboard.

Description

Holder (s): folded.

RENAULT S.A.S Joint-stock company simO Extension request (s):

(® Agent (s): NOVAIMO.

(54) SUPPORT FOR ELECTRONIC BOX FOR MOTOR VEHICLE.

(57) The invention relates to a support 100 for fixing an electronic unit 200 at the level of a dashboard of a motor vehicle 1, the support 100 comprising a first fixing means for fixing a electronic unit 200 provided with a polarizing device 120 and a second fixing means for fixing the support 100 on a cross 11 of the dashboard.

FR 3,061,682 - A1

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Support for electronic unit for motor vehicle.

The present invention relates to a support for fixing an electronic unit to a motor vehicle. The invention also relates to an arrangement of a support with an electronic unit. Finally, the invention relates to a motor vehicle comprising such an arrangement or such a support.

A motor vehicle has many electronic systems. It can obviously be useful for electronic systems to need to communicate with each other despite their different signals. On the other hand, the driver is often equipped with a device for storing and / or reading data, for example a mobile phone or a portable music player. It may therefore be advantageous for an electronic system of the motor vehicle to have the capacity to communicate with such data storage and / or reading devices.

So that the electronic systems specific to a motor vehicle communicate with each other, or even that an electronic system of a motor vehicle can communicate with a storage and / or data reading device foreign to the motor vehicle, the motor vehicle is provided electronic components capable of performing a signal converter function.

The object of the invention is to provide optimal integration of these electronic components within a motor vehicle, making it possible to guarantee their reliable and durable operation.

To achieve this objective, a support for fixing an electronic unit at the level of a dashboard of a motor vehicle comprises:

- a first fixing means for fixing an electronic unit comprising a polarizing device,

a second fixing means for fixing the support on a dashboard cross member, the first fixing means for fixing an electronic unit comprising a substantially flat receiving part intended to receive an electronic unit, the receiving part comprising a first edge and a second parallel edge forming slideways, the polarizer being a falling edge extending substantially perpendicularly from a first free end of the receiving part in a direction opposite to an upper face of the receiving part.

The second attachment means for attaching the support to a crossmember may include a hook intended to be inserted into a hole made in such a crossmember.

The first fixing means for fixing an electronic box can comprise a protuberance, in particular a boss, on the receiving part intended to receive an electronic box.

The second fixing means for fixing the support to a crossmember may comprise a fixing part having a conformation, in particular a cylindrical conformation, intended to marry at least partially such a crossmember.

The receiving part intended to receive an electronic unit can be substantially horizontal, a connecting part extending forwards and upwards, from the fixing part to the receiving part.

The second fixing means for fixing the support to a crossmember may comprise a hook, a first branch of the hook extending from a second free end in the extension of the fixing part, a second branch of the hook extending substantially perpendicularly to the fixing part and being intended to be inserted in a hole made in such a cross-member, a third branch of the hook extending substantially parallel to the first branch of the hook.

The second fixing means for fixing the support on a crossmember may comprise a hole made in the fixing part capable of receiving a fixing element, in particular a screw or a bolt, intended to fix the support on such a crossmember.

The invention also relates to an arrangement of an electronic box on a support as defined above, the electronic box comprising a pair of parallel U-shaped slides associated with a stop on a fixing face of the electronic box, the openings of the U being vis-à-vis, the first edge and the second edge of the receiving part for the electronic box being positioned in a sliding manner in the pair of runners, maintaining the fixing face of the electronic box facing the party reception.

The polarizing device can only authorize the positioning of the fixing face vis-à-vis the upper face of the receiving part up to a final fixing position in which the electronic unit and the support are maintained by a cooperation of at least one protrusion of the support or of the electronic box with, respectively, at least one cavity of the electronic box or of the support.

The invention also relates to a motor vehicle comprising an arrangement as defined above, in which the support is fixed to a dashboard cross member of the motor vehicle, and maintains the electronic unit capable of converting electrical signals and / or comprising a support as described above.

These objects, characteristics and advantages of the present invention will be explained in detail in the following description of an embodiment of a support for an electronic unit made without limitation in relation to the attached figures among which:

FIG. 1 represents a schematic perspective view of a motor vehicle according to an embodiment of the invention.

FIG. 2 represents a perspective view of an electronic unit intended to be fixed on a support according to an embodiment of the invention.

FIG. 3 represents a partial perspective view of an arrangement according to an embodiment of the invention, of an electronic unit on a support.

FIG. 4 represents a detailed perspective view of a support according to an embodiment of the invention positioned on a cross-member.

FIG. 5 represents a detail view in section along a substantially vertical and longitudinal plane A of a support according to the embodiment of the invention positioned on a cross-member.

The direction in which the motor vehicle travels in a straight line is defined as the longitudinal direction. By convention, the direction perpendicular to the longitudinal direction, located in a plane parallel to the ground, is called transverse direction. The third direction, perpendicular to the other two, is called vertical direction. The front is conventionally the area where the drive wheels of a traction motor vehicle are located.

As mentioned above, the implementation of communication between electronic systems specific to the motor vehicle, or the implementation of communication between a device for storing and / or reading data foreign to a motor vehicle and an electronic system of the motor vehicle in which such a device is located, requires electronic components on board the motor vehicle. Indeed, such electronic components have the function of converting electrical signals in particular to standardize signals, in order to allow communication between them of electronic systems emitting however signals of different shapes. Since such electronic components are fragile, sensitive to humidity and dirt, they are integrated into an electronic box according to the embodiment. Such an electronic unit is called GATEWAY having regard to its gateway function.

Due to the space occupied by motor vehicles, it remains complex to integrate a support for an electronic unit as well as an electronic unit. According to the embodiment, such an electronic unit is disposed in front of a front passenger seat, substantially between a dashboard cross member and a body of a motor vehicle, as will be detailed later.

Preferably, the electronic unit is made of plastic and includes specific elements for its assembly and its maintenance on a support. According to the embodiment of the invention described, a support for such an electronic unit comprises compatible fixing means.

In addition, such a support for an electronic unit and such an electronic unit being mounted by operators on a production line for motor vehicles, it is preferable that they are easy to assemble and present little risk of injury to operators.

An embodiment of a motor vehicle 1 is described below with reference to FIG. 1. The motor vehicle 1 comprises a dashboard cross member 11, or driver's seat cross member, extending transversely substantially from a base windscreen pillar on the driver's side to a windscreen pillar base on the passenger's side. The cross member 11, preferably tubular and of substantially circular section, is capable of supporting equipment, in particular the dashboard. A support 100, fixed on this dashboard cross member 11, maintains an electronic unit 200, for example an electronic unit capable of converting electrical signals as seen above.

The electronic unit 200, as illustrated in FIG. 2, is substantially parallelepipedic and comprises a pair of slides 211, 212 parallel in a U associated with a stop 213, arranged on a substantially flat fixing face 210. The openings of the U of the pair of runners 211, 212 are opposite so as to be able to cooperate with a first means of fixing the support 100 for fixing the electronic unit 200 on the support 100.

An arrangement 300, as illustrated in FIG. 3, comprises the electronic unit 200 fixed on the support 100. The first means of fixing the support 100 is in the form of a substantially planar extension forming a receiving part 140 intended receiving the electronic unit 200, this extension forming a first edge 111 and a second edge 112. The first and second edges 111, 112 are parallel to each other. Thus, the first edge 111 and the second edge 112 of the receiving part 140 of the support 100 are capable of sliding in the pair of slides 211, 212 of the electronic unit 200. These first and second edges 111, 112 thus form complementary slides .

When the electronic unit 200 is mounted on the support 100, its two slides 211, 212 cooperate with the two edges 111, 112 of the support 100 respectively, allowing the electronic unit 200 to slide until a front face 113 of the receiving part 140 of the support 100 comes substantially into contact with the stop 213 of the electronic unit 200.

In this final position, as illustrated in FIG. 3, two protrusions 114, for example bosses, formed on the receiving part 140, occupy, at least partially, a cavity 214, for example a groove, formed on the fixing face 210 of the electronic unit 200. This bosses / groove cooperation makes it possible to guarantee good maintenance of the electronic unit 200. In other words, for the mounting of the electronic unit 200 on the support 100 to be correct, the electronic unit 200 is inserted to the end, so that the bosses 114 occupy, at least partially, the groove 214 and that the front face 113 is substantially in contact with the stop 213. In this final configuration of attachment of the electronic unit 200, its attachment face 210 is opposite an upper face 141 of the receiving part 140 of the support 100. The electronic unit 200 is therefore located above the support t 100, in particular to ensure good vibration resistance and to facilitate assembly for operators.

To obtain such a configuration, only the first edge 111 can slide in the first slide 211 and therefore only the second edge 112 can slide in the second slide 212. The entry of the bosses 114 of the support 100 in the groove 214 of the electronic unit 200 generates a notch informing the operator that the assembly is correct and complete. The bosses 114 received in the groove 214 then immobilize the electronic unit 200 on the support 100. Thus, the first fixing means for fixing the electronic unit 200 on the support 100 comprises at least one protuberance 114, such as a boss, preferably two bosses formed on the receiving part 140. As a variant, any other holding means, such as an element capable of clipping, could be provided. For example, at least one protuberance 114 could be arranged on the support 100 or the electronic unit 200, and a substantially corresponding cavity 214 could be arranged respectively on the electronic unit 200 or the support 100.

In the event of an attempt at reverse mounting, that is to say an attempt to insert the first edge 111 into the second slide 212 and therefore an attempt to insert the second edge 112 into the first slide 211, the first means of fixing the support 100 comprises a projecting key 120 which comes into contact with the fixing face 210 of the electronic unit 200. This key 120 prevents the engagement of the first edge 111 in the second slide 212 and consequently the engagement of the second edge 112 in the first slide 211. The electronic unit 200 then not being held in any way on the support 100, the operator is warned that the assembly attempt is in vain.

The keying device 120 may in particular be a falling edge, extending substantially perpendicularly from a free end 142 of the receiving part 140 of the support 100, in a direction opposite to the upper face 141 of the receiving part 140.

Thus, the absence of an error in mounting the electronic unit 200 on the support 100 can cause an increase in the rate of the production chain and consequently a saving.

The support 100, as illustrated in FIG. 4, also includes a second fixing means for fixing the support 100 on the dashboard cross member 11. This second fixing means comprises a fixing part 170 having a conformation capable of at least partially matching the cross member 11. The cross member 11 preferably being tubular and of circular section, the conformation is preferably substantially cylindrical. The fixing part 170 advantageously has two radial bulges 171 having the advantage of increasing the rigidity of the support 100.

As illustrated in FIG. 1, the receiving part 140 of the support 100 is substantially horizontal and a connecting part 150 extends forward and upwards from the fixing part 170 to the receiving part 140. Note that the connecting part 150 preferably has ribs. The ribs extend substantially perpendicular downward. They are for example at the edge of the connecting part 150, on either side of this connecting part 150, relative to the longitudinal direction. The ribs increase the rigidity of the support 100.

As illustrated in FIG. 5, the second fixing means for fixing the support 100 on the cross-member 11 also comprises a hook 101 intended to be inserted in a hole 14 formed in the cross-member 11. The hook 101 alone allows to maintain the support 100 in position on the cross member 11 in order to facilitate a subsequent blocking step. The hook 101 is substantially U-shaped. A first branch 102 of the hook 101 extends from a second free end 172 in the extension of the fixing part 170. A second branch 103 extends substantially perpendicular to the second free end 172 of the fixing part 170. The second branch 103 is inserted into the hole 14 of the cross-member 11. A third branch 104, possibly bevelled, extends substantially parallel to the first branch 102. The second branch 103 and the third branch 104 of the hook 101 keep the support 100 in position on the cross-member 11. Although only one hook 101 is preferably provided, variants with more hooks are possible.

In addition, the second means of fixing the support 100 on the cross-member also comprises a hole 130 formed in the fixing part 170 capable of receiving a fixing element, in particular a screw or a screw / nut system, that is to say a bolt, intended for the blocking step by tightening the support 100 on the cross member 11. This step of blocking the support 100 on the cross member 11 is ensured by means of the screw passing through the hole 130 of the support 100 and coming to be screwed directly into a hole made in the cross member 11, or by means of the bolt passing through the hole 130 of the support 100 as well as two holes made in the cross member 11 if the latter is tubular. In the case of a cross member 11 made of sheet metal, of plastic material or possibly of composite material, and the choice of a screw as a fixing element, this may be of the soft material type.

Note that in addition to its function of holding the support 100 in position on the cross member 11 before the blocking step, the hook 101 performs a polarizing function. Indeed, so that the hole 130 of the support 100 is opposite the hole 12 of the cross member 11 intended to be crossed by a screw or a bolt, and that the second branch 103 of the hook 101 has been inserted in the hole 14 of the cross member 11, only one position of the support 100 on the cross member 11 is possible.

In addition, during the blocking step by tightening the screw or bolt, the second branch 103 of the hook 101 positioned in the hole 14 of the cross member 11, provides an anti-rotation function. Indeed, in the absence of a hook 101, the friction of the screw head or of the bolt head on the fixing part 170 would cause the support 100 to rotate in the direction of screwing. The pre-maintenance of the support 100 on the cross member 11 being ensured by the hook 101, the tightening is greatly facilitated and can be done without risk of injury caused by the rotation of the support 100 during screwing. On the other hand, the support 100 provided with the hook 101 being able to be placed in only one way on the cross-member 11, an erroneous assembly of the support 100 on the cross-member 11 is avoided. Thus, the absence of mounting error of the support 100 on the cross member 11 can cause an increase in the rate of the production chain and therefore a saving.

Preferably, the support 100 is made in one piece. The support 100 has a shaped sheet metal structure, in particular stamped and / or folded and / or cut. It can also be made from plastic or composite materials.

As a note, the solution therefore achieves the object sought which is to optimize the integration of an electronic unit 200 and a support 100 within a motor vehicle 1 and has the following advantages:

It makes it possible to reduce the training time of an operator for tasks relating to the assembly of the support 100 on the cross-member 11 and concerning the mounting of the electronic unit 200 on the support 100, a single possibility existing for each of these tasks.

The material of the support 100 being preferably metallic, this results in low industrialization costs, all the more so as the manufacturing processes are common and widely used in the automotive industry.

It can be used on all types of vehicles, namely passenger vehicles, trucks, vans, vehicles intended for the transport of Persons with Reduced Mobility, transformed utility vehicles such as ambulances, or public transport vehicles.

The embodiment described is particularly well suited to a motor vehicle 1 requiring the installation of a support 100 for an electronic unit 200. It also relates to an arrangement 300 of an electronic unit 200 with such a support 100. It carries finally on a motor vehicle 1, in particular light vehicles and industrial vehicles, incorporating such an arrangement 300 or such a support 100.

In summary, the embodiment described makes it easier for operators to mount the support 100 on the dashboard cross member 11, and the mounting of the electronic unit 200 on the support 100, without risk of incorrect mounting. The arrangement 300 has an optimized footprint which makes it possible to locate it in an area already comprising numerous facilities. It can also allow the production rate to be increased due to the absence of assembly errors to be corrected. For all these reasons, the invention generates savings on the production chain of motor vehicles thus equipped.

Claims (10)

Claims: 1. Support (100) for fixing an electronic unit (200) at the level of a dashboard of a motor vehicle (1), characterized in that the support (100) comprises: - a first fixing means for fixing an electronic unit (200) comprising a polarizing device (120), - A second fixing means for fixing the support (100) on a crosspiece (11) of dashboard, the first fixing means for fixing an electronic unit (200) comprising a receiving part (140) substantially plane intended to receive an electronic unit (200), the receiving part (140) comprising a first edge (111) and a second edge (112) parallel forming slides, the polarizing device (120) being a falling edge extending substantially perpendicularly from a first free end (142) of the receiving part (140) in a direction opposite to an upper face (141) of the receiving part (140). 2. Support (100) according to claim 1, characterized in that the second fixing means for fixing the support (100) on a crosspiece (11) comprises a hook (101) intended to be inserted in a hole (14 ) formed in such a cross (11). 3. Support (100) according to one of the preceding claims, characterized in that the first fixing means for fixing an electronic unit (200) comprises a protuberance (114), in particular a boss, on the receiving part (140) intended to receive an electronic unit (200). 4. Support (100) according to one of the preceding claims, characterized in that the second fixing means for fixing the support (100) on a crosspiece (11) comprises a fixing part (170) having a conformation, in particular a cylindrical conformation, intended to marry at least partially such a crosspiece (11). 5. Support (100) according to the preceding claim, characterized in that the receiving part (140) intended to receive an electronic unit (200) is substantially horizontal, a connecting part (150) extending forwards and upwards, from the fixing part (170) to the receiving part (140). 6. Support (100) according to one of claims 4 or 5, characterized in that the second fixing means for fixing the support (100) on a crosspiece (11) comprises a hook (101), a first branch ( 102) of the hook (101) extending from a second free end (172) in the extension of the fixing part (170), a second branch (103) of the hook (101) extending substantially perpendicular to the part of fixing (170) and being intended to be inserted in a hole (14) formed in such a crosspiece (11), a third branch (104) of the hook (101) extending substantially parallel to the first branch (102) of the hook (101). 7. Support (100) according to one of claims 4 to 6, characterized in that the second fixing means for fixing the support (100) on a crosspiece (11) comprises a hole (130) formed in the part of fixing (170) adapted to receive a fixing element, in particular a screw or a bolt, intended to fix the support (100) on such a cross-member (11). 8. Arrangement (300) of an electronic unit (200) on a support (100) according to one of the preceding claims, characterized in that the electronic unit (200) comprises a pair of associated parallel U-shaped slides (211,212) to a stop (213) on a fixing face (210) of the electronic unit (200), the openings of the U being opposite, the first edge (111) and the second edge (112) of the receiving part ( 140) for the electronic unit (200) being positioned in a sliding manner in the pair of runners (211, 212), maintaining the fixing face (210) of the electronic unit (200) facing the receiving part (140 ). 9. Arrangement (300) according to the preceding claim, characterized in that the polarizing device (120) only authorizes the positioning of the fixing face (210) vis-à-vis the upper face (141) of the receiving part (140) to a final fixing position in which the electronic unit (200) and the support (100) are held by cooperation of at least one protuberance (114) of the support (100) or of the electronic unit (200 ) with, respectively, at least one cavity (214) of the electronic unit (200) or of the support (100). 10. Motor vehicle (1) characterized in that it comprises an arrangement (300) according to one of claims 8 or 9, in which the support (100) is fixed to a crosspiece (11) of the vehicle dashboard automobile (1), and maintains the electronic unit (200) capable of converting electrical signals and / or, in that it comprises a support (100) according to one of claims 1 to 7.