WO2014009619A1

WO2014009619A1 - Hinge articulating an opening panel of the bonnet type that closes the engine compartment in a motor vehicle bodyshell

Info

Publication number: WO2014009619A1
Application number: PCT/FR2013/051252
Authority: WO
Inventors: Damien BESSETTE; Benoit GOMANNE
Original assignee: Peugeot Citroen Automobiles Sa
Priority date: 2012-07-13
Filing date: 2013-06-03
Publication date: 2014-01-16
Also published as: EP2872718B1; FR2993230A1; EP2872718A1; FR2993230B1

Abstract

The invention relates to a hinge (4) for articulating an opening panel of the bonnet type that closes off the engine compartment in a motor vehicle bodyshell, said hinge comprising a fixed part (7) and a moving part (8), the moving part (8) being mounted at one of its ends that can be made to rotate about an axis of pivoting (A) provided at one end of the fixed part (7) between a position in which the hinge (4) is open and a position in which it is closed. The invention consists in the fact that the moving part (8) has a lug (6) projecting from said moving part (8) towards the fixed part (7) in the plane of pivoting of the said hinge (4), said lug (6) being intended to extend along a structural element of the bodyshell when the hinge (4) is in the closed position.

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) also causes the deformation of the wing and therefore causes an additional cost of repair 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 deformation stroke of the moving knuckle between the hood and the engine elements is then very limited.

In FR 2 929 318, there is provided a device for retaining an opening 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 of the cabin assembled together, the opening being articulated on the body structure by means of at least one hinge and which comprises at least one piece forming a stop intended to oppose the lateral displacement of at least one of the body members during a shock, each piece forming a stop being made of a material of greater resistance to deformation than the material used for the manufacture of said body structure. This abutment piece may thus comprise a partition which extends in all or part in vertical projection out of one of the fixed and movable parts of the hinge of articulation of the opening, said partition comprising an outer surface intended to come during a shock, directly against the other parts of the hinge.

However, such a stop device is positionable only near the articulation between the fixed part and the movable part of a hinge and could not be implemented effectively in the case of a hinge provided with a gooseneck moving knuckle, that is to say having two curved portions of inverted curvatures. Furthermore, the material of this piece forming a stop having a higher resistance to deformation, this leads to a degradation of the head-pedestrian shock performance by stiffening the hinge.

The present invention therefore aims to provide a hinge hinge of an opening such as a motor compartment cover on a motor vehicle body, which advantageously prevents the Y-movement of the hood in case of repairable shock while guaranteeing a satisfactory head-pedestrian shock performance. [001 1] For this purpose, the invention relates to a hinge hinge of an opening type closing hood of the engine compartment on a motor vehicle body, said hinge having a fixed part and a movable part, the part mobile device being mounted at one of its ends drivable in rotation about a pivot axis provided at one end of the fixed part between an open position and a closed position of the hinge, characterized in that the movable part has a lug projecting from said movable portion to the fixed portion, in the pivot plane of the hinge, said lug being intended to extend along a structural element of the body when the hinge is in closing position.

Thus, advantageously, during the assembly of such a hinge on a motor vehicle, the lug protruding from said movable portion of the hinge and extending in the pivot plane of the hinge is preferably , arranged rather close to the free end of the movable part, that is to say away from the connection moving part / fixed part. This tab is further arranged to extend facing a structural element of the body when the hinge is in the closed position and, in case of impact of the type repairability, this tab can abut against this structural element of the vehicle so as to avoid spillage of the Y-closing hood.

Thus, when a vehicle equipped with a hinge according to the invention comes into contact with an obstacle according to a wall repair type shock, the angle of impact of 10 ° tends to spill the cover Y. When spilling the Y-shaped hood, the lug abuts against the body element of the vehicle, which makes it possible to limit or even prevent the Y-spill and in particular to prevent damage to the wing.

According to a preferred embodiment of the invention, the movable portion of the hinge has a shape called gooseneck, that is to say having two curved portions with inverse curvature. The first curve of the movable portion corresponds to a hooking portion pivotally mounted about an axis of the fixed portion of the hinge and the second curve corresponds to the end of the movable part on which the cover will be fixed, the tab extending radially projecting inside the second curve of the side opposite the hood, in the plane of pivoting of said movable portion relative to the fixed part. 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 mobile part in the neck Swan is sufficient.

The invention also relates to a hinge assembly of an opening on a motor vehicle body, comprising a hinge according to the invention and a support for fixing the hinge, characterized in that the fixing support comprises a plate fixing means for fixing the fixed part of the hinge and has a wall extending perpendicularly to said fixing plate, the movable part of the hinge provided with the tab being arranged to extend along the perpendicular part of the support of fixing in the closed position of the hinge.

Thus advantageously, the mounting bracket allows to fix the hinge on structural elements of the body and is 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 projecting tab of the movable knuckle extends along the inner face of the wall of the fixing support, thus interposed between the tab and a structural element on which the support is fixed and, in the event of a frontal impact against a wall, the hood or opening which tends to be driven in translation in the Y direction of the vehicle is prevented by the tab which bears against the wall of the vehicle. support for fixing 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.

In this way, it still more advantageously preserves the wing and the cockpit side which improves the repairability since the repair costs are limited to the front of the vehicle and no longer include the costs of the wing or cockpit side as was the case before. As mentioned above, the tab can be integrated directly to the moving knuckle 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 also relates to a motor vehicle comprising an opening such as a closing cap of the engine compartment hinged to the vehicle body by means of hinge sash hinges of which at least one is a hinge hinge according to the invention and a motor vehicle comprising an opening such as a closing cap of the engine compartment hinged to the vehicle body using at least one hinge assembly according to the invention.

Other advantages and features of the invention emerge from the description of embodiments given below with reference to the accompanying drawings in which:

Figure 1 is a partial schematic representation of a motor vehicle seen from the side, comprising a device for retaining an opening, according to the invention,

[0023] Figure 2 is a side perspective view of a hinge assembly according to the invention;

Figure 3 is a perspective view of the fixing bracket of the hinge assembly of Figure 2;

Figure 4 is an exploded perspective view of the hinge of the hinge assembly of Figure 2.

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 others 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 a motor 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 to the vehicle, a left front wing 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 assembly of the opening comprises a hinge hinge 4 and a fixing bracket 5 of said hinge 4, this assembly is generally arranged in the area D, that is to say 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 having the main function of ensuring the opening and closing of the engine compartment by moving respectively 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 the cover 2.

Of simple and inexpensive design, the hinge 4 has a low impact resistance especially when they generate transverse forces relative 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 degradation of the front fender, the hinge 4 is provided with a lug 6 forming a stop for lateral displacement of said engine hood.

According to the illustration given in FIG. 2, the hinge 4 comprises a fixed part which is subsequently called fixed knuckle, which is mounted integral with the body structure of the vehicle by means of a fastening support 5. . The mounting bracket 5 has a fixing plate 5a for the establishment of the support on an element of the body structure which is an example is a front wing liner not shown and a fixing wall 5b extending perpendicularly to the fixing plate 5a and against the wing (not shown), the end of the wall 5b being bent at 90 ° to come to rest and attach to the wing. Once fixed, this support becomes a structural element of the body.

This fixed part 7 of the hinge 4 comprises a fixing base 7a intended to be disposed on the fixing plate 5a of the fixing support 5. The fixed part 7 further comprises extending perpendicularly from the fixing base 7a a connecting part 7b comprising the axis A around which the mobile part 8 of the hinge 4, which is hereinafter called moving knuckle 8, is articulated.

The connecting portion 7b is substantially vertical Z-shaped, once mounted, and comprises at its end, at a vertex, an opening forming a bearing for the rotation along the axis A of a complementary shape rod belonging to said moving knuckle 8.

The stem of the moving knuckle 8 extends transversely towards the outside of the vehicle. The rod is preferably disposed at the rear end 8a of the movable knuckle 8, at a vertex. The opposite end 8d, then located at the front of the movable knuckle 8, is integrally connected to the engine hood 2, by means of a clamping screw 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 lining, the latter being linked mobile knuckle audit 8.

The movable knuckle 8 preferably has a gooseneck shape that is to say having two curved portions with reverse curvature. Thus, the knuckle 8 has an end provided with the rod allowing it to be pivotally mounted on the fixed part 7. This end 8a extends along the fixed part 7 of the hinge 4 towards the fixing base 7a of the fixed part then forms a first curve 8b away from the fixing base 7a before forming a second curve of inverse curvature 8c, so that the second end 8d of the knuckle mobile 8 extends substantially parallel to the fixing plate 5a and has means for fixing the cover 2.

At this second curvature is present a tab 6 formed projecting said movable knuckle 8 and extending in the plane of pivoting said movable knuckle 8 relative to the fixed knuckle 7 and towards the fixing support 5.

Preferably, this lug 6 extends substantially radially to the second curved portion 8c of the movable knuckle 8. This lug 6 thus forms a stop that projects from the movable knuckle 8 in the pivot plane of the hinge. and which is positioned on said movable knuckle 8 so as to be positioned along the wall 5b of the fixing support 5 in the closed position of the hinge 4. The lug 6 is thus intended to come during an impact, directly in bearing against the wall 5b of the fixing support 5.

The tab 6 is thus disposed on the hinge 4 so that it extends transversely from the movable knuckle 8 to the mounting bracket 5 when the cover 2 is in the closed position of the engine compartment. However, the end of the lug 6 is spaced from the fixing plate 5a of the support 5 so as not to prevent a sagging stroke (Z) of the movable part of the hinge for the pedestrian impact.

The tab 6 is made for example by molding a piece with the movable knuckle 8.

Given the clearances and outcropping that should be respected in the assembly of the bodywork parts of the vehicle, the tab 6 is spaced from the wall of the fixing bracket with an interval of between 3 and 8 mm, of preferably 3 mm.

Advantageously, such a low interval limits any inertia of the engine hood during a shock, which allows to directly load the lug 6 while limiting the risk of dispersion of the shock forces.

The hinge assembly of the invention makes it possible to obtain a good compromise between the head pedestrian impact and the repairability shock that can not be obtained by stiffening the hinges. Indeed, the hinge and the hinge assembly according to the invention leave free sagging hood and hinges, essential for pedestrian impact head.

Claims

claims

1. Hinge hinge (4) of an opening of the closing hood type of the engine compartment on a motor vehicle body, said hinge comprising a fixed part (7) and a movable part (8), the movable part (8) being mounted at one of its ends drivable in rotation about a pivot axis (A) provided at one end of the fixed part (7) between an open position and a closed position of the hinge (4), characterized in that the movable portion (8) has a tab (6) projecting from said movable portion (8) towards the stationary portion (7) in the pivot plane of said hinge (4), said tab (6) being intended to extend along a structural element of the body when the hinge (4) is in the closed position.

2. hinge (4) according to claim 1, characterized in that the movable portion (8) of the hinge (4) has a shape called gooseneck, that is to say having two curved portions with opposite curvature .

3. Hinge according to claim 2, characterized in that the first curve of the movable part (8) corresponds to a hooking portion pivotally mounted about an axis (A) of the fixed part (7) of the hinge. then the second curve corresponds to the free end of the movable part (8) on which will be fixed the opening, the tab (6) extending radially projecting inside the second curve on the opposite side of the opening, in the pivot plane of said movable portion (8) relative to the fixed portion (7).

4. A hinge assembly of an opening on a motor vehicle body, comprising a hinge (4) according to one of claims 1 to 3, and a fixing bracket (5) of the hinge (4), characterized in the fixing bracket (5) comprises a fixing plate (5a) for fixing the fixed part (7) of the hinge and has a wall (5b) extending perpendicular to said fixing part (5), the hinge (6) being fixed on the fixing support so that the tab (6) formed on the movable part (8) is arranged to extend facing the perpendicular wall (5b) of the fixing support (5) in the closed position of the hinge (4).

5. An assembly according to claim 4, characterized in that the fixed part (7) of the hinge (4) comprises a fixing base (7a) intended to be arranged on the fixing plate (5a) of the fixing support (5). ), the fixed part (7) further comprising extending perpendicularly from the fixing base (7a), a connecting part (7b) having the axis (A) around which the moving part (8) is articulated. the hinge (8).

6. An assembly according to claim 5, characterized in that the movable knuckle (8) has a gooseneck shape, namely an end (8a) pivotally mounted on the fixed part (7) and extending along the fixed part (7) of the hinge (4) towards the fixing base (7a) of the fixed part (7) and then forming a first curve (8b) away from the fixing base (7a) before forming a second curve of inverse curvature (8c), the free end (8d) of the movable knuckle (8) extending substantially parallel to the fixing plate (5a) and having means for attachment to an opening.

7. The assembly of claim 6, characterized in that the lug (6) extends substantially radially to the second curved portion (8c) of the movable knuckle (8), this lug (6) thus forming a stop which extends protruding towards the fixing support (5) along the wall (5b) of said support, in the closed position of the hinge (4) and in the pivot plane of the hinge (4).

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 3.

9. Motor vehicle comprising an opening such as a closing cap of the engine compartment hinged to the vehicle body by means of two sets of sash articulation, at least one of which is a hinge assembly according to the invention. one of claims 4 to 7.