Disclosed is a method for the quality control of a component at least partially made of elastomer, particularly for a joint, including: a) carrying out at least one accommodation cycle on the component, the accommodation cycle involving applying a progressive compression force to the component and progressively releasing the compression force without pulling; b) applying a progressive compression force to the component in quasi static state according to a given component deformation predetermined profile; c) measuring the deformation of the component and the compression force applied while the compression force is applied; d) determining the conformity of the component under a loading other than that of the compression force of step b) from the measurement of the deformation of the component and the compression force applied.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01N 3/32 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts répétés ou pulsatoires
The invention relates to a functional hydro-elastic element to be lodged in a hydro-elastic joint for damping load vibrations between two structural parts, in particular a wheel suspension and a vehicle body, the functional hydro-elastic element having a longitudinal axis and a circumferential direction around this longitudinal axis. The functional hydro-elastic element has at least one row of hydraulic chambers, extending circumferentially and comprising at least three hydraulic chambers and at least one throttling duct that enables a communication of liquid between each pair of respective circumferentially adjacent hydraulic chambers so that a variation of at least one working volume of the hydraulic chambers due to load vibrations can be balanced by enabling a flow of liquid into at least one of the other hydraulic chambers.
B60G 15/06 - Suspensions élastiques caractérisées par la disposition, l'emplacement ou le type de combinaison de ressorts et d'amortisseurs de vibrations, p. ex. du type télescopique ayant un ressort mécanique et un amortisseur à fluide
F16F 9/346 - Passages d'étranglement en forme de fentes ménagées dans les parois des cylindres
F16F 9/32 - Ressorts, amortisseurs de vibrations, amortisseurs de chocs ou amortisseurs de mouvement de structure similaire, utilisant un fluide ou moyen équivalent comme agent d'amortissement Parties constitutives
3.
METHOD FOR THE QUALITY CONTROL OF A COMPONENT AT LEAST PARTIALLY MADE OF FILLED ELASTOMER
The present invention relates to a method for the quality control of a component at least partially made of elastomer, particularly for a joint, comprising: a) carrying out at least one accommodation cycle on the component, the accommodation cycle involving applying a progressive compression force to the component and progressively releasing the compression force without pulling; b) applying a progressive compression force to the component in quasi static state according to a given component deformation predetermined profile; c) measuring the deformation of the component and the compression force applied while the compression force is applied; d) determining the conformity of the component under a loading other than that of the compression force of step b) from the measurement of the deformation of the component and the compression force applied.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01N 3/32 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts répétés ou pulsatoires
A pneumatic support includes first and second carrier elements, and first and second spring elements. Two middle transverse faces of the first and second spring elements are opposite each other and form a first working chamber and the opposite transverse face and the portion of the transverse wall are opposite each other and form a second chamber. A first hole provides communication between the first working chamber and the outside atmosphere and a second hole in the portion of the transverse wall provides communication between the second chamber and the outside atmosphere. The second spring element has low rigidity and an overall thickness that varies in a ratio of 1 to 2 and, at rest, the middle transverse face is separated from the middle transverse face of the first spring element, whereas the opposite transverse face is separated from the inner face of the portion of the transverse wall.
F16F 5/00 - Ressorts à liquide dans lesquels le liquide travaille comme un ressort par compression, p. ex. combinés avec une action d'étranglementCombinaisons de dispositifs comportant des ressorts à liquide
F16F 13/20 - Ensembles comportant des ressorts du type non à fluide ainsi que des amortisseurs de vibrations, des amortisseurs de chocs ou des ressorts à fluide comprenant à la fois un ressort en matière plastique et un amortisseur, p. ex. un amortisseur de friction l'amortisseur étant un amortisseur à fluide, p. ex. le ressort en matière plastique ne faisant pas partie de la paroi de la chambre à fluide de l'amortisseur caractérisés en ce qu'ils comprennent aussi un ressort pneumatique
Pneumatic support. The pneumatic support (1) has a first carrier means (2), a second carrier means (3), a first spring means (4), a second spring means (5), the two middle transverse faces (16, 19) of the first and second spring means (4, 5) are opposite each other and form a first working chamber (6) and the opposite transverse face (20) and the portion of transverse wall (11) are opposite each other and form a second chamber (7), a first hole (8) provides communication between the first working chamber (6) and the outer atmosphere and a second hole (9) in the portion of transverse wall (11) provides communication between the second chamber (7) and the outer atmosphere, the second spring means (5) being of low rigidity and having an overall thickness that varies, at most, in a ratio of 1 to 2 and, at rest, the middle transverse face (19) is separated from the middle transverse face (16) of the first spring means (4), while the opposite transverse face (20) is separated from the inner face of the portion of transverse wall (11).
F16F 13/20 - Ensembles comportant des ressorts du type non à fluide ainsi que des amortisseurs de vibrations, des amortisseurs de chocs ou des ressorts à fluide comprenant à la fois un ressort en matière plastique et un amortisseur, p. ex. un amortisseur de friction l'amortisseur étant un amortisseur à fluide, p. ex. le ressort en matière plastique ne faisant pas partie de la paroi de la chambre à fluide de l'amortisseur caractérisés en ce qu'ils comprennent aussi un ressort pneumatique
6.
RESILIENT HINGE, IN PARTICULAR FOR THE SUSPENSION OF THE WHEELS OF AN AUTOMOBILE
The present invention relates to a resilient hinge (1), in particular for the suspension of the wheels of an automobile, including: an inner frame (5), an outer frame (3) surrounding the inner frame (5) such that said frames define an axial direction and two radial directions that are perpendicular to the axial direction (Z) as well as perpendicular to each other, referred to as a main radial direction (X) and a secondary radial direction (Y), and an elastomeric body (7) for the mutual resilient engagement of the frames. The invention is characterized in that the elastomeric body (7) consists of at least four linking columns (11a, 11b, 11c, 11a, 11e, 11f), each of which extends from the inner frame (5) to the outer frame (3).
F16F 1/38 - Ressorts en matière plastique, p. ex. en caoutchoucRessorts faits d'un matériau à friction intérieure élevée avec manchon de matériau élastique entre un manchon extérieur rigide et un étui intérieur rigide ou une broche
F16F 1/387 - Ressorts en matière plastique, p. ex. en caoutchoucRessorts faits d'un matériau à friction intérieure élevée avec manchon de matériau élastique entre un manchon extérieur rigide et un étui intérieur rigide ou une broche comprenant des moyens pour modifier la rigidité dans certaines directions
B60G 21/05 - Systèmes d'interconnexion à plusieurs roues conjuguées suspendues élastiquement, p. ex. pour stabiliser la caisse du véhicule eu égard aux forces d'accélération, de décélération ou aux forces centrifuges conjuguées en permanence mécaniquement entre roues appartenant au même essieu, mais n'étant pas disposées du même côté du véhicule, c.-à-d. la suspension de la roue gauche étant reliée à celle de la roue droite
7.
HYDROELASTIC FUNCTIONAL ELEMENT AND HYDROELASTIC JOINT
The invention relates to a hydroelastic functional element (3) intended to be deposited into a hydroelastic joint (1) for damping load vibrations between two structural parts, in particular a vehicle body and wheel suspension, the hydroelastic functional element having a longitudinal axis (2) and a circumferential direction about said longitudinal axis, characterized by at least one row of hydraulic chambers (24, 26) extending circumferentially and including at least three hydraulic chambers and at least one throttling channel (40, 38), the at least one throttling channel of which enables liquid communication between each pair of respective circumferentially adjacent hydraulic chambers so that a variation of at least one working volume of the hydraulic chambers due to load vibrations can be balanced by enabling a liquid flow into at least one of the other hydraulic chambers.
A process for testing the quality, in particular the stiffness and the phase, of an elastic joint for connecting two other parts while filtering vibrations transmitted between these two other parts, said elastic joint being meant to work in axial, radial or torsional direction, disposing or not disposing of one or more hydro-elastic chambers and of two cylindrical concentric support elements, the inner support element being located to a large extend inside the volume defined by the outer support element, the two support elements being connected by a set of components made of rubber or elastomer or, if applicable, of plastic and metallic parts, wherein said support elements are themselves respectively attached to the two other parts which the elastic joint connects, wherein a technique of testing by impact is applied within the timing of the production line of the elastic joint, i.e. less than 10 seconds per cycle, for identifying good joints from bad ones through a frequential analysis of the oscillation of the impacted area of the elastic joint, characterized in that the values of the phase shift of the frequential analysis are compared with a bandwidth of permissible phase shift.
G01L 5/10 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de la tension dans les éléments flexibles, p. ex. dans les cordages, les câbles, les fils métalliques, les filaments, les courroies ou les bandes en utilisant des moyens électriques
The invention relates to a hydroelastic joint (1) for assembling two parts of a structure, in particular for connecting a wheel suspension to the body of a vehicle, and for damping the vibrations transmitted between one part of the structure and the other, said joint including a longitudinal axis (x), an outer rigid frame (3), an inner rigid frame (7), a main space between the inner and outer frames, and a rigid intermediate frame (5) arranged in the main space and separating the latter into an inner partial space and an outer partial space, a hydroelastic spring unit (10) being arranged in either the inner or outer partial space; and an elastic or hydroelastic assembly (40) arranged in the other partial space, characterized in that a rigid abutment device (44) is arranged in either the inner or outer partial space, and in that the abutment device substantially prevents a radial deformation of the elastic or hydroelastic assembly in a locking direction and enables a deformation of the elastic or hydroelastic assembly in a damping direction that is diametrically opposed to the locking direction.
The invention relates to a bush for a resilient joint intended for resiliently assembling two structural parts of a vehicle, the bush having on at least one of the two axial ends thereof a radial support surface defining a radial reference plane and a means for increasing the friction between the supporting surface and one of the two structural parts, the means for increasing the friction being formed by a plurality of recesses and elevations on the radial support surface, characterised in that the recesses and the elevations are formed by a laser beam, the recesses having a maximum axial depth of less than 1 mm, in particular less than 0.5 mm, and the elevations having a maximum axial height of less than 1 mm, in particular less than 0.5 mm, respectively relative to the radial reference plane.
F16F 1/38 - Ressorts en matière plastique, p. ex. en caoutchoucRessorts faits d'un matériau à friction intérieure élevée avec manchon de matériau élastique entre un manchon extérieur rigide et un étui intérieur rigide ou une broche
11.
METHOD AND DEVICE FOR MONITORING THE QUALITY, PARTICULARLY THE STIFFNESS AND THE PHASE, OF A HYDROELASTIC JOINT
Method for monitoring the quality, particularly the stiffness and the phase, of a joint intended to connect two other parts while filtering the transmission of vibrations between these other two parts, said joint being called on to work axially, radially or in torsion, optionally having one or more hydroelastic chambers and being composed of two concentric cylindrical reinforcements, the inner reinforcement being largely situated within the volume defined by the outer reinforcement, these two reinforcements being connected by a set of rubber or elastomer components and, where appropriate, plastic components and metal parts, said reinforcements themselves being respectively fastened to the other two parts that are connected by the joint, by applying an impact monitoring technique at the rate of the production line on which the joints are produced, that is to say less than 10 seconds of cycle time, in order to identify the good from the poor parts during a frequency analysis of the oscillation of the impacted joint region, characterized in that phase shift values of the frequency analysis are compared with an authorised phase shift bandwidth.
The invention relates to a device for reshaping the end of a dowel, in particular a dowel (35) for an elastic hinge (37), including a shaping head (11) that is placed on the end (33) of the dowel (35) to be unwound so that deformation pressure forces in a substantially axial direction are transmitted by the shaping head (11) when unwinding the end in order to radially widen the end (33) by compression, a holder (5) capable of holding the dowel (35) and an advance mechanism (17, 19) for performing a relative axial adjustment movement between the shaping head (11) and the holder (5) in order to create therebetween deformation pressure forces, an abutment (47) being provided on the holder (5), with which the shaping head (11) can mesh for axially limiting the relative adjustment movement, characterised in that the abutment is rotatingly provided on the holder.
B21J 19/02 - FoyersSystèmes d'alimentation en air spécialement conçus pour ces foyers
B21K 21/12 - Formage des extrémités d'articles creux
F16F 1/38 - Ressorts en matière plastique, p. ex. en caoutchoucRessorts faits d'un matériau à friction intérieure élevée avec manchon de matériau élastique entre un manchon extérieur rigide et un étui intérieur rigide ou une broche
brevets
