FR3041569A1 - LOWER ARM WITH FUSE REINFORCEMENT - Google Patents
LOWER ARM WITH FUSE REINFORCEMENT Download PDFInfo
- Publication number
- FR3041569A1 FR3041569A1 FR1559239A FR1559239A FR3041569A1 FR 3041569 A1 FR3041569 A1 FR 3041569A1 FR 1559239 A FR1559239 A FR 1559239A FR 1559239 A FR1559239 A FR 1559239A FR 3041569 A1 FR3041569 A1 FR 3041569A1
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- FR
- France
- Prior art keywords
- arm
- suspension arm
- core
- deformation
- reinforcement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/001—Suspension arms, e.g. constructional features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/008—Attaching arms to unsprung part of vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/14—Mounting of suspension arms
- B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/016—Constructional features of suspension elements, e.g. arms, dampers, springs allowing controlled deformation during collision
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/10—Constructional features of arms
- B60G2206/122—Constructional features of arms the arm having L-shape
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
La présente invention se rapporte à un bras de suspension (1) d'une roue automobile destiné à relier une rotule de roue, au point E, à deux articulations de la structure d'un véhicule, aux points A et B, ledit bras de suspension (1) comprenant une âme (10) et un renfort (3) fixé sur l'âme (10) par des moyens de liaison (2, 4), il est caractérisé en ce qu'une partie des moyens de liaison sont fusibles (4). Il est ainsi possible de définir l'effort qui fera céder les liaisons fusibles (4), leur localisation et par la même les zones de déformations préférées.The present invention relates to a suspension arm (1) of an automobile wheel intended to connect a wheel hub, at point E, to two articulations of the structure of a vehicle, at points A and B, said arm of suspension (1) comprising a core (10) and a reinforcement (3) fixed on the core (10) by connecting means (2, 4), it is characterized in that a part of the connecting means are fusible (4). It is thus possible to define the effort that will yield the fusible links (4), their location and the same areas of deformation preferred.
Description
BRAS INFERIEUR AVEC RENFORT FUSIBLELOWER ARM WITH FUSE REINFORCEMENT
La présente invention se rapporte à un bras de suspension automobile qui permet de relier la structure du véhicule à la roue. Ce bras est parfois constitué de deux pièces: une âme généralement en tôle emboutie ou pliée et un renfort fixé sur cette tôle. Le renfort sert à renforcer la tôle principale lors des chocs frontaux et latéraux.The present invention relates to an automobile suspension arm which makes it possible to connect the structure of the vehicle to the wheel. This arm is sometimes made of two parts: a core generally stamped or folded sheet and a reinforcement fixed on this sheet. The reinforcement serves to reinforce the main sheet during frontal and lateral impacts.
Lors de chocs latéraux (perpendiculaire au sens de déplacement du véhicule) ou longitudinaux (dans le sens de déplacement du véhicule) sur la roue, le bras se déforme de façon différente et à des efforts différents. La déformation se fait généralement avec un effort plus important en choc latéral qu'en choc longitudinal et la localisation de cette déformation n'est pas maîtrisée. L'objet de la présente invention est de proposer un bras où, à la fois, l'effort de déformation est similaire en choc frontal et latéral, et où la déformation est maîtrisée.When side impacts (perpendicular to the direction of movement of the vehicle) or longitudinal (in the direction of movement of the vehicle) on the wheel, the arm deforms differently and at different efforts. The deformation is generally done with a greater effort in lateral shock than in longitudinal shock and the location of this deformation is not controlled. The object of the present invention is to provide an arm where, at the same time, the deformation force is similar in frontal and lateral impact, and where the deformation is controlled.
Le bras de suspension automobile selon l'invention est destiné à relier une rotule de roueau berceau d'un véhicule par deux articulations, ledit bras comprenant une âme et un renfort fixé sur l'âme par des moyens de liaison, il est caractérisé en ce qu'une partie des moyens de liaison sont fusibles. Il est ainsi possible de définir l'effort qui fera céder les liaisons fusibles, et de programmer la déformation de la pièce par la localisation des différentes liaisons et la forme des tôles. Cette solution permet d'une part de ne pas avoir recours à des bras forgés, et d'autre part d'uniformiser, lors de la mise au point, les chocs latéraux et longitudinaux en choisissant l'effort de rupture adapté.The automobile suspension arm according to the invention is intended to connect a cradle roll of a vehicle by two joints, said arm comprising a core and a reinforcement fixed to the core by connecting means, it is characterized in that that part of the connecting means are fusible. It is thus possible to define the effort that will give up the fuse links, and to program the deformation of the part by the location of the different links and the shape of the sheets. This solution makes it possible on the one hand not to use forged arms, and secondly to standardize, during the development, the lateral and longitudinal shocks by choosing the appropriate breaking force.
Avantageusement, l'âme présente une zone de déformation. La zone de déformation sera située de préférence en vis-à-vis du renfort et entre les liaisons fusibles et fixes, afin que le renfort garantisse la tenue de la pièce tant que les liaisons fusibles restent intactes, et que la pièce se déforme quand les liaisons fusibles ont cédé.Advantageously, the core has a deformation zone. The deformation zone will preferably be located opposite the reinforcement and between the fusible and fixed links, so that the reinforcement guarantees the holding of the part as long as the fusible links remain intact, and that the part deforms when the fusible links failed.
Avantageusement, la rotule de roue a un centre E et la zone de déformation représente environ un quart de la distance entre le centre E et l'articulation la plus proche. Cela donne une amplitude de déformation suffisante. La rupture se produit à mi-distance entre les points A, B et le centre E, évitant ainsi le risque de décapsulage de la rotule au centre E.Advantageously, the wheel ball has a center E and the deformation zone represents approximately a quarter of the distance between the center E and the nearest joint. This gives a sufficient amplitude of deformation. The rupture occurs halfway between the points A, B and the center E, thus avoiding the risk of uncapping of the patella at the center E.
Avantageusement, les liaisons fusibles sont disposées à proximité de la rotule de roue. Lors du choc, l'effort le plus important viendra de la roue, les fusibles céderont plus facilement.Advantageously, the fusible links are arranged near the wheel spherical joint. During the shock, the most important effort will come from the wheel, the fuses will yield more easily.
Avantageusement, les autres liaisons sont disposées à proximité d'au moins une des deux articulations. La zone comprenant les articulations du bras fixées à la structure du véhicule est ainsi sauvegardée. Les autres liaisons pourront être des points de soudure.Advantageously, the other links are arranged near at least one of the two joints. The zone comprising the articulations of the arm fixed to the structure of the vehicle is thus saved. Other links may be soldering points.
Avantageusement, les liaisons fusibles sont au nombre de 2 ou plus. De façon optimum, on pourra utiliser 4 liaisons fusibles.Advantageously, the fuse links are 2 or more. Optimally, four fusible links can be used.
Selon une caractéristique particulière, les autres liaisons non fusibles sont au nombre de 3 ou plus. Selon la taille des liaisons non fusibles, on pourra en utiliser 5.According to a particular characteristic, the other non-fusible links are 3 or more. Depending on the size of the non-fusible links, it will be possible to use 5.
Selon une première variante, la zone de déformation présente au moins une ondulation. Cette ondulation permet de diriger la déformation de l'âme, elle est de préférence disposée perpendiculairement à celle-ci.According to a first variant, the deformation zone has at least one corrugation. This corrugation makes it possible to direct the deformation of the core, it is preferably arranged perpendicular to it.
Selon une deuxième variante, la zone de déformation est perforée. La perforation va affaiblir l'âme et ainsi favoriser la déformation de celle-ci.According to a second variant, the deformation zone is perforated. The perforation will weaken the soul and thus promote the deformation of it.
Selon une troisième variante, la zone de déformation est plus étroite que le reste de l'âme. En réduisant la largeur de la zone de déformation on va favoriser sa déformation et ainsi rendre cette zone plus faible. L'invention concerne également un véhicule équipé d'un bras de suspension avec au moins une des caractéristiques précédentes. D'autres avantages pourront encore apparaître à l'homme du métier à la lecture des exemples ci-dessous, illustrés par les figures annexées, donnés à titre d'exemple: - La figure 1 est une vue éclatée du bras selon 1'invention, - La figure 2 est une vue de dessus du bras selon 1'invention, - La figure 3 est une vue en perspective d'un bras selon l'invention après un choc.According to a third variant, the deformation zone is narrower than the rest of the core. By reducing the width of the deformation zone we will promote its deformation and thus make this zone weaker. The invention also relates to a vehicle equipped with a suspension arm with at least one of the preceding features. Other advantages may still be apparent to those skilled in the art on reading the examples below, illustrated by the appended figures given by way of example: FIG. 1 is an exploded view of the arm according to the invention, - Figure 2 is a top view of the arm according 1'invention, - Figure 3 is a perspective view of an arm according to the invention after an impact.
Le bras 1 illustré figure 1 comprend une âme 10 et un renfort 3. Le renfort 3 a deux bords tombés 30a et 30b disposés de part et d'autre, et qui sont destinés à entourer l'âme 10 du bras 1 et à le rigidifier. Le renfort 3 est relié à l'âme du bras par des points de soudure 2 et des liaisons fusibles 4. Le bras 1 est relié par deux articulations aux points A et B de préférence en caoutchouc à la structure du véhicule, et par une rotule de centre E à la roue. On voit sur la figure 2 que les moyens de liaison non fusibles sont constitué de points de soudure 2 (non fusibles), disposés à proximité du point A dans la partie du renfort 3 la plus éloignée de la rotule. Les moyens de liaisons fusibles 4 sont placées à proximité de la rotule dans la partie du renfort la plus proche de ladite rotule. La zone de déformation 11 constitue une partie de l'âme 10, elle correspond à une zone amincie (en largeur ou en épaisseur), ici elle n'a pas de bords tombés 100 à la différence des autres bords du bras 1 et présente une ondulation 110. La zone de déformation 11 peut également comporter des trous ou plusieurs ondulations. Cette zone 11 est placée entre les points de soudure 2 et les liaisons fusibles 4.The arm 1 illustrated in FIG. 1 comprises a core 10 and a reinforcement 3. The reinforcement 3 has two fallen edges 30a and 30b disposed on either side, and which are intended to surround the core 10 of the arm 1 and to stiffen it . The reinforcement 3 is connected to the arm of the arm by welding points 2 and fusible links 4. The arm 1 is connected by two joints at points A and B, preferably made of rubber to the vehicle structure, and by a ball joint from center E to the wheel. It can be seen in FIG. 2 that the non-fusible connection means consist of soldering points 2 (non-fusible) disposed near the point A in the part of the reinforcement 3 furthest from the patella. The fusible link means 4 are placed near the ball in the part of the reinforcement closest to said ball joint. The deformation zone 11 constitutes a part of the core 10, it corresponds to a thinned zone (in width or in thickness), here it has no dropped edges 100 unlike the other edges of the arm 1 and has a Ripple 110. The deformation zone 11 may also include holes or several corrugations. This zone 11 is placed between the welding points 2 and the fusible links 4.
De façon optimale la zone de déformation 11 correspond à un quart de la distance entre le centre E de la rotule et l'axe AB.Optimally the deformation zone 11 corresponds to a quarter of the distance between the center E of the ball and the axis AB.
Nous allons maintenant décrire ce qui se passe lors d'un choc latéral sur la roue. La rotule de la roue va s'enfoncer dans le bras vers les points A et B, à partir d'un certain effort donné les liaisons fusibles 4 vont céder libérant l'âme 10 du renfort 3, la zone de déformation 11 va se déformer en se pliant ou en amplifiant l'ondulation 110, laissant le reste du bras disposé après les points de soudure 2 intact, c'est-à-dire sans déformation, comme visible figure 3 .We will now describe what happens during a side impact on the wheel. The ball of the wheel will sink into the arm to the points A and B, from a given force the fusible links 4 will yield releasing the core 10 of the reinforcement 3, the deformation zone 11 will deform by folding or amplifying the corrugation 110, leaving the remainder of the arm disposed after the weld points 2 intact, that is to say without deformation, as can be seen in FIG.
On peut ainsi maîtriser l'effort nécessaire à la déformation du bras 1 dans le choc latéral de façon à ce qu'il soit similaire à celui de la déformation du bras 1 en choc frontal.It is thus possible to control the force required for the deformation of the arm 1 in the side impact so that it is similar to that of the deformation of the arm 1 in frontal impact.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1559239A FR3041569B1 (en) | 2015-09-30 | 2015-09-30 | LOWER ARM WITH FUSE REINFORCEMENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1559239A FR3041569B1 (en) | 2015-09-30 | 2015-09-30 | LOWER ARM WITH FUSE REINFORCEMENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3041569A1 true FR3041569A1 (en) | 2017-03-31 |
| FR3041569B1 FR3041569B1 (en) | 2017-10-20 |
Family
ID=54478890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1559239A Active FR3041569B1 (en) | 2015-09-30 | 2015-09-30 | LOWER ARM WITH FUSE REINFORCEMENT |
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| Country | Link |
|---|---|
| FR (1) | FR3041569B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020221974A1 (en) * | 2019-04-30 | 2020-11-05 | Psa Automobiles Sa | Vehicle wheel wishbone, with articulation push-fitted onto a fixing rod via a bushing |
| FR3095614A1 (en) * | 2019-04-30 | 2020-11-06 | Psa Automobiles Sa | VEHICLE WHEEL TRIANGLE, WITH ARTICULATIONS FITTED ON A FIXING ROD HOUSED IN A HOUSING |
| FR3107881A1 (en) * | 2020-03-03 | 2021-09-10 | Renault S.A.S. | Device for protecting a vehicle against shocks, in particular applied to the front axle of the vehicle. |
| US12097743B2 (en) * | 2020-09-29 | 2024-09-24 | Yorozu Corporation | Suspension structure for vehicle and method of manufacturing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000071734A (en) * | 1998-09-02 | 2000-03-07 | Mazda Motor Corp | Vehicle suspension support structure |
| WO2003101767A1 (en) * | 2002-05-31 | 2003-12-11 | Magna International Inc. | Hydroformed control arm |
| DE102004015048A1 (en) * | 2004-03-26 | 2005-10-13 | Bayerische Motoren Werke Ag | Attachment of bearing holder for bearing of wheel positioning linkage of motor vehicle has releasing attachment in form of frictional threaded connection with essentially vertical longitudinal axis |
| WO2014016519A1 (en) * | 2012-07-26 | 2014-01-30 | Saint Jean Industries | Suspension arm for motor vehicle and method of manufacture thereof |
| WO2015086962A1 (en) * | 2013-12-12 | 2015-06-18 | Renault S.A.S. | Suspension arm for a motor vehicle |
-
2015
- 2015-09-30 FR FR1559239A patent/FR3041569B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000071734A (en) * | 1998-09-02 | 2000-03-07 | Mazda Motor Corp | Vehicle suspension support structure |
| WO2003101767A1 (en) * | 2002-05-31 | 2003-12-11 | Magna International Inc. | Hydroformed control arm |
| DE102004015048A1 (en) * | 2004-03-26 | 2005-10-13 | Bayerische Motoren Werke Ag | Attachment of bearing holder for bearing of wheel positioning linkage of motor vehicle has releasing attachment in form of frictional threaded connection with essentially vertical longitudinal axis |
| WO2014016519A1 (en) * | 2012-07-26 | 2014-01-30 | Saint Jean Industries | Suspension arm for motor vehicle and method of manufacture thereof |
| WO2015086962A1 (en) * | 2013-12-12 | 2015-06-18 | Renault S.A.S. | Suspension arm for a motor vehicle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020221974A1 (en) * | 2019-04-30 | 2020-11-05 | Psa Automobiles Sa | Vehicle wheel wishbone, with articulation push-fitted onto a fixing rod via a bushing |
| FR3095613A1 (en) * | 2019-04-30 | 2020-11-06 | Psa Automobiles Sa | VEHICLE WHEEL TRIANGLE, WITH ARTICULATION FITTED ON A FIXING ROD VIA A BUSH |
| FR3095614A1 (en) * | 2019-04-30 | 2020-11-06 | Psa Automobiles Sa | VEHICLE WHEEL TRIANGLE, WITH ARTICULATIONS FITTED ON A FIXING ROD HOUSED IN A HOUSING |
| FR3107881A1 (en) * | 2020-03-03 | 2021-09-10 | Renault S.A.S. | Device for protecting a vehicle against shocks, in particular applied to the front axle of the vehicle. |
| US12097743B2 (en) * | 2020-09-29 | 2024-09-24 | Yorozu Corporation | Suspension structure for vehicle and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3041569B1 (en) | 2017-10-20 |
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