WO2018154203A1

WO2018154203A1 - Hinge of a leaf such as a bonnet for closing the engine compartment on a motor vehicle body

Info

Publication number: WO2018154203A1
Application number: PCT/FR2018/050155
Authority: WO
Inventors: Damien BESSETTE
Original assignee: Psa Automobiles Sa
Priority date: 2017-02-24
Filing date: 2018-01-23
Publication date: 2018-08-30
Also published as: CN110382807A; FR3063301B1; FR3063301A1; EP3585966A1; CN110382807B

Abstract

The invention relates to a hinge (4) of a leaf such as a bonnet for closing an engine compartment on a motor vehicle body, said hinge (4) comprising a stationary part (5) and a movable part (6), the movable part (6) being mounted such that it can be rotated about a pivoting axis (A) of the stationary part (5), between an opening position and a closing position of the hinge (4), the movable part (6) having a retaining element (7) that protrudes from said movable part (6) towards the stationary part (5) in the pivoting plane of said hinge (4). According to the invention, the stationary part (5) comprises a complementary retaining element (8) along which the retaining element (6) of the movable part extends in the closed position of the hinge (4).

Description

Hinge hinge of an opening of the type closing hood of the engine compartment on a motor vehicle body

The present invention relates to a hinge for an opening of a motor vehicle comprising a body structure on which are assembled body members, such as an opening, said body structure being obtained from a base and at least one side cockpit assembly together, the opening being mounted hinged to the body structure by means of said at least one hinge.

It is known articulation hinges having a fixed portion defining an axis of rotation about which a movable knuckle is pivotable to move an opening such as a closing cap of a motor compartment between a position of opening and a closed position.

The articulation hinges of a closing cap of a motor compartment are often made from a material with little resistance to deformation which allows easy formatting and has the advantage of be less expensive.

Such hinges do not ensure sufficient maintenance of the cover they connect to the body structure of the vehicle, during a shock of the vehicle with an obstacle, which causes demerit of the vehicle compared to certain standards regulations. In fact, it was noted that the hinges do not oppose the lateral movement of the hood during a shock, which increases the risk of deformation of the surrounding body parts, such as a front side wing.

In particular, during a crash-type impact shock before it is defined as a shock at 16 km / h against a rigid wall with an angle of 10 ° with 40% overlap, lateral displacement the hood (along the transverse axis Y of the vehicle) to the outside of said hood, also causes the deformation of the wing and therefore causes an additional repair cost related to the replacement or repair of the wing.

In order to avoid this deflection in Y, one possibility is to stiffen the movable part or moving hinge of the hinge. However, such stiffening leads to a degradation of the head-to-pedestrian shock performance in that the movement of deformation of the moving knuckle between the hood and the motor elements is then very limited. Shock Repair Before 16 km / h against a 10 ° rigid wall with 40% overlap. It has been proposed in FR 2 993 230 a hinge hinge of an opening such as a motor compartment cover on a motor vehicle body, the movable portion has a tab projecting from said portion mobile towards the fixed part, in the pivot plane of the hinge. The fixing bracket of the hinge makes it possible to fix it on structural elements of the box and constitutes a structural element. Thus, the mounting plate of the support makes it possible to fix the Z-shaped hinge (vertical axis of the vehicle) on the body of the vehicle while the wall perpendicular to the fixing plate of said support allows, by its external face, a Y-attachment on a structural element of the body.

When the opening which is fixed on the movable part of the hinge is in the closed position, the protruding lug of the movable knuckle extends along the inner face of the wall of the mounting bracket, and interposed between the leg and a structural element on which the support is fixed and, in case of frontal impact against a wall, the cover or opening which tends to be driven in translation in the Y direction of the vehicle is prevented by the tab which abuts against the wall of the attachment support of the hinge, itself fixed on a structural element of the body. Thus, during an impact, the tab abuts against the wall of the mounting bracket interposed between said tab and a body member, which reinforces the retention of the hood and prevents spillage Y.

This solution avoids the contact of the hinge with the right wing (during a shock to the left) and thus reduce the cost of repairing the vehicle during a shock at 16 km / h (gain at the level of the Repairability class).

[001 1] However, if such a hinge has many advantages, in certain vehicle silhouettes, the positioning of the hinge is such that there is no structural element facing this hinge where to fix the support fixing the hinge which is then fixed on the wing liner. [0012] In fact, during a crash-type shock before being defined as a shock at 16 km / h against a rigid wall with an angle of 10 ° with 40% overlap, the lateral displacement of the hood (along the transverse axis Y of the vehicle) would then cause the deformation of the wing since no structural element opposes it, resulting in an additional repair cost related to the replacement or repair of the vehicle. 'wing.

The present invention therefore aims to overcome this disadvantage, by proposing a hinge hinge which can be mounted directly opposite a wing without interposed structural element and which, during a shock type shock repairability does not cause lateral spillage of the hood type opening damaging the wing while respecting the constraints related to head / pedestrian impact.

For this purpose, the invention relates to a hinge of articulation of an opening of the closing hood type of the engine compartment on a motor vehicle body, said hinge having a fixed portion and a movable portion, the movable portion being mounted rotatable about a pivot axis of the fixed portion between an open position and a closed position of the hinge, the movable portion having a retaining member projecting from said movable portion toward the portion fixed in the plane of pivoting of said hinge, characterized in that the fixed part comprises a complementary retaining element along which the retaining element of the movable part extends in the closed position of the hinge.

Thus, advantageously, the hinge according to the invention comprises retaining elements for deflection of a motor cover in case of reparability type shock, arranged to extend facing each other. so that when the hinge is mounted on one side of a vehicle body, the retaining element of the fixed part is interposed between the retaining element of the movable part and the outside of the body, so for example the wing of the body, thus opposing a lateral spill of the hood to the wing along the Y axis of the vehicle as a result of a shock type shock repairability of the opposite side.

Indeed, during the spillover of the Y-shaped hood, the retaining element of the movable part abuts against the retaining element of the fixed part, which makes it possible to limit or even avoid spillage in Y and in particular avoid damaging the wing.

According to a preferred embodiment of the invention, the movable part of the hinge has a shape called gooseneck, that is to say having at least one curved portion. The first curve of the movable portion corresponds to a hooking portion, at the proximal end of the fixed portion, pivotally mounted about an axis of the fixed portion of the hinge while the distal end of the movable portion. on which the cover will be fixed may be rectilinear or have a second curve with inverse curvature. Preferably, the retaining element of the movable part is an anti-spilling lug which extends radially projecting on the distal part of the movable part, for example inside the second curve of the side opposite to the bonnet. in the plane of pivoting of said movable part relative to the fixed part. The fixed part has an abutment element such as a retaining tab provided on its distal part so as to extend facing the anti-spill tab of the movable part, in a plane parallel to the pivot plane of the part movable relative to said fixed portion.

Such a hinge thus avoids spillage Y of the hood in case of a shock said repairability but also ensures good performance in case of pedestrian head shock since the deformation stroke of the movable part in the neck Swan is sufficient.

According to a particularly preferred form of the invention, the retaining tab of the fixed part is formed by the end of the distal portion of the fixed part folded so as to extend perpendicularly with respect to the fixed part and then again parallel to the latter to come extend opposite the anti-spill tab so that, in the closed position of the hinge, the anti-spill tab of the movable portion extends against said retaining tab of so as to come into abutment during a lateral displacement said retaining element on the side and in mounting position on a body. Thus, when the hinge is intended to be fixed on a wing liner, the fixed portion may comprise fixing means on the fixing bracket of the hinge which are arranged opposite the abutment element, so that the hinge fixing support extends on the opposite side of the fixed part relative to the abutment element, the retaining tab being thus between the anti-spill tab and the wing. Thus, advantageously, the hinge according to this particular form of the invention makes it possible to prevent lateral Y-shaped spillage of the engine hood even in the absence of a structural element facing the hinge.

As mentioned above, the anti-spill tab is made in one piece with the moving part or moving knuckle in order to reduce the number of parts but also to facilitate the assembly of the cover.

In addition, a hinge according to the invention can be advantageously used only on the opposite side to the shock. The mass addition is therefore very small.

The invention relates to a vehicle body comprising at least one articulation hinge of an opening such as a bonnet, such as the invention described above, said hinge being mounted on the body so that the retaining element of the fixed part of the hinge is interposed between the retaining element of the movable part and the outer side of the body made up of at least the wing, so that in case of a so-called repair shock, the the stop element of the movable part abuts against the stop element of the fixed part which prevents the lateral displacement of the cover towards the outside of the body.

Thus, the hinge hinge according to the invention can be fixed on a wing liner, the hinge according to the invention avoiding damage to the wing by preventing movement of the hood.

The invention also relates to a motor vehicle having an opening such as a closing cap of the engine compartment hinged to the vehicle body with the hinges of opening hinge of which at least one is a hinge hinge according to the invention.

Other advantages and features of the invention emerge from the description of embodiments given below with reference to the appended drawings in which: FIG. 1 is a partial schematic representation of a motor vehicle viewed from the side, comprising a hinge for hinging an opening, according to the invention;

- Figure 2 is a side perspective view of a hinge hinge according to the invention in the closed position;

Figure 3 is a side perspective view of the opposite side of the hinge of Figure 2;

- Figure 4 is a side perspective view of the hinge mounted on a body; and - Figure 5 is a simplified view of Figure 4.

Referring to Figure 1, a zone D defined by the mixed line locates a possible implantation area on a vehicle 1, a hinge of an opening 2, which is advantageously intended to protect other surrounding body parts, such as a wing 3 before, during a collision between the vehicle and an obstacle. The opening 2 is a closing cap of an engine compartment located at the front of the vehicle, which is a bodywork part laterally extended by front wings right and left. Only the front right wing 3 is shown in Figure 1, knowing that by symmetry with respect to a median plane extending parallel to a longitudinal axis x to the vehicle, a right front fender is present. In what follows, the terms "left", "right", "front" and "rear" mean according to a normal movement of the vehicle. It is in a nonlimiting manner and for the sake of clarity that, in what follows, only one side of the vehicle is described, knowing of course that by symmetry, the other side of the vehicle may be affected by the same technical detail. The hinge hinge 4 of the opening is generally arranged in the area D, that is to say close to a rear area of the bonnet 2.

The motor vehicle preferably comprises two hinges 4 arranged in the area D of the vehicle, each hinge 4 having as main function to ensure the opening and closing of the engine compartment by respectively moving up and down the hood 2. To do this, the hinge 4 comprises a hinge axis A around which is able to move in rotation on hood 2.

Of simple and inexpensive design, the hinge 4 has a low impact resistance especially when they generate transverse forces with respect to the vehicle. To avoid buckling of the bonnet articulation hinge 4, which results in the lateral displacement of the bonnet which it supports, and consequently the deterioration of the front fender, the hinge 4 is provided with retaining means for lateral displacement of said engine hood. According to the illustration given in Figures 2 and 3, the hinge 4 comprises a fixed part also called fixed knuckle, which is mounted integral with the body structure of the vehicle by means of a fixing bracket.

In the example shown, the hinge 4 is positioned on the wing lining facing the wing 3. This hinge 4 thus comprises a fixed part, or fixed knuckle, 5 and a movable part or moving knuckle 6 , drivable in pivoting relative to the fixed part along a pivot axis A.

The fixed part 5 comprises a plate 51 extending mainly in the plane of pivoting of the hinge 4. The fixed part 5 comprises a distal portion 5b extending along a first axis and a proximal portion 5a extending according to a second axis intersecting the first axis. The proximal portion or connecting portion 5a comprises the axis A around which is rotated the movable portion 6 of the hinge 4.

The connecting portion 5b is of substantially vertical Z orientation, once mounted, and comprises at its end, at a vertex, an opening 10 forming a bearing for rotation along the axis A d ' a rod of complementary shape belonging to said movable knuckle 6 while the orientation of the distal end of the fixed part is of substantially longitudinal orientation X (longitudinal axis! u veiucle).

The rod of the movable part 6 extends transversely towards the outside of the vehicle. The rod is preferably disposed at a proximal portion 6a of the movable portion 6, at a vertex. The distal opposite portion 6b of the movable part 6, then located forwards, is integrally linked to the hood 2 motor, by means of clamping screws for example.

The opening 2 is composed of an ornamental part which is visible from the outside of the vehicle, which is also called outer skin, and a rigid part also called opening liner, the latter being linked at the moving part 6.

The movable portion 6 preferably has a gooseneck shape that is to say having at least one curve. Thus, the proximal portion 6a of the movable portion 6 is provided with the rod allowing it to be pivotally mounted on the fixed portion 5. This proximal portion 6a extends along the proximal connecting portion 5b and then forms a first curve away from the distal portion 5a of the fixed portion before extending linearly, so that the distal portion 6b of the movable portion 6 extends substantially above and parallel to the distal portion 5a. This distal portion of the movable portion 6 has means for fixing the cover 2.

At this distal portion 6b of the movable portion 6 is provided a retaining member such as a tab 7 arranged projecting said movable knuckle 6 and extending in the plane of pivoting said movable knuckle 6 relative to the fixed knuckle 5 and in the direction of said fixed knuckle 5.

Preferably, this lug 7 extends substantially radially to the distal portion 6c of the movable portion 6. This lug 7 thus forms a stop which projects from the movable knuckle 6 in the pivot plane of the hinge. 4.

The tab 7 is thus disposed on the hinge 4 so that it extends transversely from the movable part 6 to the fixed part 5 when the cover 2 is in the closed position of the engine compartment.

However, the end of the tab 7 is spaced from the distal portion 5b so as not to prevent a sagging stroke (Z) of the movable portion 6 of the hinge for pedestrian impact.

The tab 7 is made in one piece with the movable part 6 for example by molding, stamping. The distal portion 5b of the fixed part 5 comprises a retaining element 8 projecting from said fixed part 5 and forming a bearing surface against which the lug 7 of the movable part 6 must extend, in the closed position of the hinge 4. This abutment element 8 is formed by the end of the plate 51 folded so as to extend in a direction perpendicular to the main axis of the distal portion 5a and then folded to extend again along an axis parallel to said main axis. The bearing face 81 of the retaining member 8 extends unhooked relative to the fixed part 5, which allows the positioning of the lug 6 facing said bearing face 81 of the stop element 8.

Given the clearances and outcropping that should be respected in the assembly of the vehicle body parts, the tab 7 is spaced from the bearing face 81 of the abutment member 8 of an interval included between 3 and 8 mm, preferably 3 mm. Advantageously, such a low interval limits any inertia of the bonnet 2 during an impact, which allows to directly load the tab 7 while limiting the risk of dispersion of the shock forces.

The hinge 4 is such that once mounted on one side of a box, the retaining element 8 of the fixed part 5 is interposed between the retaining element 7 of the movable part 6 and the side of outside the box. Therefore, it is possible to mount the hinge 4 on a wing liner 1 1 on its side facing outwardly and therefore facing the wing 3. The retaining element 8 is thus the most to the outside and prevents the lateral movement of the bonnet outwards in the event of impact by forming a stop for the retaining element 7 of the movable part 6 of the hinge. Therefore, the fixed part 5 of the hinge 4 may have fastening means on the wing liner, which are formed on the side of the fixed part 5 opposite to that where the retaining element is located. 8. Thus, the mounting plate 51 further comprises a fixing portion 52 having orifices for fixing the fixed portion 5 on a hinge fixing bracket which serves as a mounting interface on the body (as can be seen in FIG. Figure 3). The joint according to the invention provides a good compromise between the pedestrian impact head and repairability shock that can not be obtained by stiffening the hinges. Indeed, the hinge hinge according to the invention leaves free the collapse of the hood and hinges, essential for pedestrian impact head.

Claims

claims

1. Hinge hinge (4) of an opening of the hood type (2) closing the engine compartment on a motor vehicle body, said hinge (4) having a fixed part (5) and a movable part (6), the movable part (6) being mounted rotatable about a pivot axis (A) of the fixed part (5) between an open position and a closed position of the hinge (4), the movable part (6) ) having a retaining element (7) projecting from said movable part (6) towards the fixed part (5) in the plane of pivoting of said hinge (4), characterized in that the fixed part (5) comprises a complementary retaining element (8) along which the retaining element (6) of the movable part extends in the closed position of the hinge (4).

2. hinge (4) according to claim 1, characterized in that the retaining elements (7, 8) are arranged to extend facing one another so that when the hinge is mounted on a side of a vehicle body, the retaining element (8) of the fixed part (5) is interposed between the retaining element (7) of the movable part (6) and the outer side of the body.

3. Hinge according to one of claims 1 and 2, characterized in that the retaining element of the movable part (6) is a tab (7) which extends radially projecting on the distal portion (6b) of the movable part (6) in the plane of pivoting of said movable part (6) with respect to the fixed part (7).

4. Hinge according to claim 3, characterized in that the abutment element of the fixed part (5) is a retaining tab (8) provided on its distal part, so as to extend opposite the tab ( 7) of the movable part (6), in a plane parallel to the plane of pivoting of the movable part (6) with respect to said fixed part (5).

5. hinge according to claim 4, characterized in that the retaining lug (8) of the fixed part (5) is constituted by the end of its distal portion (5b) folded so as to extend perpendicularly with respect to the fixed part (5) and then again parallel thereto.

Vehicle body having at least one hinge (4) for hinging an opening such as a bonnet (2) mounted on one side of the body according to one of claims 1 to 5, characterized in that the holding element (8) of the fixed part (5) of the hinge (4) is interposed between the retaining element (7) of the movable part (6) and the outside of the body.

7. Case according to claim 6, characterized in that the hinge hinge is fixed on a wing lining facing the wing.

8. Motor vehicle comprising an opening such as a closing cap of the engine compartment hinged to the vehicle body using hinge sash hinges of which at least one is a hinge hinge according to the one of claims 1 to 5.