EP0469234A1 - Vehicle lifting jack - Google Patents
Vehicle lifting jack Download PDFInfo
- Publication number
- EP0469234A1 EP0469234A1 EP91104996A EP91104996A EP0469234A1 EP 0469234 A1 EP0469234 A1 EP 0469234A1 EP 91104996 A EP91104996 A EP 91104996A EP 91104996 A EP91104996 A EP 91104996A EP 0469234 A1 EP0469234 A1 EP 0469234A1
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- EP
- European Patent Office
- Prior art keywords
- stirrup
- parallelogram
- extension
- support
- arm
- 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.)
- Granted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers
Definitions
- the present Utility Model relates to an improved mechanical cylinder for motor vehicles, for raising and lowering them in order to replace the corresponding damaged wheel, normally by puncture or cutting of its tire and said cylinder provides, to the function to which it is intended, several advantages which will be noted later, apart from others inherent in its constitution.
- a type of mechanical jack for raising automobiles is known which is protected by Utility Model N. 279019, the holder and owner of which is the own applicant for this Utility Model, which includes a mechanism based on four articulated arms between them and arranged in the form of a parallelogram, provided with a spindle located in a diagonal, being approximately horizontal in the operating position of the jack, to said spindle is connected, by its rear end, a means for being able to actuate it by pivoting - like a crank or the like - and the front end of said spindle is screwed to a hinged nut at the front apex of the parallelogram, while the opposite end of the spindle passes through a cross member, which is hinged to the opposite rear apex of said parallelogram.
- the rear end of the spindle is terminated in a posterior expansion, bearing by pivoting on said cross member, a suitable bearing being inserted to facilitate said rotating support; although it is obvious that the relative position of said rotating support and said nut can be reversed, so that the latter is arranged articulated at the rear apex of the parallelogram, while the opposite end of the spindle is disposed at the front part of the jack and crosses said cross member, in this case articulated at the opposite front apex of said parallelogram, by arranging at the front part and which exceeds the spindle a bearing to facilitate pivoting of the spindle relative to said cross member, as well as a stop at the part internal opposite of said apex before the parallelogram, to retain said apex, and, at the same time, to limit the maximum height of the jack.
- the four arms of the parallelogram mechanism of said mechanical jack can be formed by pairs of parallel flat bars, if necessary with their edges folded, each taking the shape of "C", said bars being separated by corresponding cores in function of hinge axes or by "U” cut profiles, connected by respective hinge axes.
- Said mechanical jack provides, in particular, the advantages of automatic centering of the stirrup in the initial position and despite its free articulation, by ensuring the stability of the assembly formed by the vehicle and the jack both during elevation and the descent of the vehicle, only at the end of its elevation to change the corresponding wheel, thus ensuring the correct initial positioning of the caliper to obtain that it is in a suitable position at the end of its elevation, eliminating thus a possible bad positioning of the stirrup when the user locates the jack under the body of the motor vehicle, in order to raise said body.
- the improved mechanical cylinder for motor vehicles according to this Utility Model is of the type described above and is characterized in that the stirrup has, united to the underside of its front flat part, a laminar centering device, elastic and generally of inverted "U" shape, with its base connected to the stirrup, arranged transversely to this one and defined by an elongated central and flat section, extended at each extremity according to short sections inclined in an opposite and symmetrical way downwards and outwards, each of them has, in its turn, a flat lateral extension and vertical, comprising an oblong part and with an axis perpendicular to said lower face of the stirrup, with an elongated orifice in substantial correspondence with the internal orifice of said tubular part of the stirrup, and so that the two lateral and parallel extensions of the centering device bear against the corresponding inner faces of the two parallel wings of said extension of the rear upper arm; and the spring is now, at least one spring and
- the present improved mechanical actuator for motor vehicles provides, in particular, the advantages of mounting the centering device to the caliper of the actuator simpler and with fewer parts - only one - and less labor, with the economy which this results in its cost, the worker not having to center it during its assembly, because it remains automatically centered when it is placed, given its configuration, and all this without reducing its automatic centering function. stirrup in its initial position and despite its free articulation, without preventing it in any possible direction that the stirrup adopts around the transverse axis of the extension of the rear upper arm on which said stirrup is mounted, ensuring the correct initial positioning said stirrup according to it has been exposed previously.
- the improved mechanical cylinder for motor vehicles object of the invention offers the advantages which have been described previously, apart from others which will be easily deduced from the example of embodiment of said cylinder, which is described in more detail below for to facilitate the understanding of the characteristics exposed previously, by making known at the same time various details and for this drawings are annexed in which, only by way of example and not limiting of the scope of the present invention, is represented a practical case of said cylinder .
- Figure 1 shows a side view in elevation of the cylinder in its folded position and with its crank still retracted, and it should be noted that in this figure and the following the cylinder is shown in schematic form as regards the spindle (without drawing its means of screwing and support and guide); in Figure 2 there is shown said cylinder (with a part of the crank) which begins to unfold and arranged in an appropriate position below the vehicle body (of which there is shown, in dotted lines, only a lower part of that -this with its rim); Figure 3 shows said cylinder in an elevated position thereof, that is to say, in an elevated position of the vehicle to which it is applied (without drawing the crank); Figure 4 corresponds to a section through A-A of Figure 2 and shows a detail of the free joint of the stirrup, as well as the centering device; in Figures 5 and 6 is shown on a larger scale, the stirrup in side elevation and in plan, respectively; in Figure 7 is detailed section B-B of Figure 5; Figure 8 corresponds to a front elevation before the stirr
- the improved mechanical cylinder for motor vehicles has four arms (1), (2), (3) and (4) (see in particular FIG. 3) which are articulated with one another and are arranged in a parallelogram, provided a spindle (5) - shown schematically by a geometric axis - located in a diagonal of the parallelogram, said diagonal varies angularly in position depending on it follows from the comparison between Figures 1, 2 and 3, during actuation of the jack.
- crank (6) ( Figure 1) as a means so that its user can actuate the spindle in pivoting, to obtain its deployment or folding, that is to say, for raising or lowering the caliper of the jack and, consequently, the bodywork of the motor vehicle to which it is applied.
- the crank (6) is inseparably articulated at the rear end of the spindle (5), stops existing to establish its operating position and having, in addition and optionally, a retaining mechanism (7) for temporarily fixing said crank in the folded position of the jack and to keep it in its place in the vehicle; if the pivoting actuation of the spindle (5) could be done by other means and even they could consist of a separable or removable union between the crank or the like and the rear end of the spindle.
- the spindle (5) is supported by support means which may consist of a bearing or other suitable means for retaining at this front end of the spindle in position and, at the same time, facilitating its pivoting with respect to at the front vertex of the parallelogram; and said spindle is screwed to screwing means or nut allowing the spindle to move relative to the rear apex of the parallelogram of the jack according to the direction of pivoting that is given to the crank (6).
- the situation of the bearing or the like and of the nut could be reversed, that is to say, the latter would be disposed at the front apex of the parallelogram and the bearing would be disposed at the rear apex of the latter.
- the cylinder has, near the upper top thereof and normally in an extension of the rear upper arm (1), a stirrup (8) ( Figures 1 to 4 and in particular 5 to 10) for the support and the support of the motor vehicle to which it is applied, said stirrup being generally, such as that which is represented, articulated at the end of said extension of the arm (1) and also being conventional the stirrup in the shape of "U” or "V", determining a channel in which the lower rim (9) which the corresponding lower part of the vehicle body can have, can be freely accommodated, reinforced in this zone to resist the mechanical forces of the support of the caliper of the jack to raise said vehicle.
- the stirrup could have another suitable constitution to adapt to said lower part of the vehicle body, having a configuration suitable for this purpose.
- the rim (9) is used to guide the stirrup (8) and to prevent its possible untimely sliding, without said rim resting on the bottom of the stirrup channel.
- the rear lower arm (2) which starts from the rear apex of the cylinder parallelogram, has a lower extension (2a) which forms the support leg of the cylinder proper, separating the parallelogram from the ground and is articulated to a foot (10 ) to rest on the ground or corresponding surface.
- stop means which may consist of complementary elements or else be determined by the own configuration of the lower edge of the extension (2a), as shown in Figures 1, 2 and 3; there may be elastic means to maintain the foot in the position shown in Figure 1, when folded.
- the upper front arm (4) may incorporate a dowel or similar elastic (not shown), arranged at the part of the front end of said arm and near the front apex of the parallelogram, in correspondence with a tubular part (11) of the stirrup ( 8), which is freely articulated with clearances in all directions around an axis (12), which is connected to the extension of the rear upper arm (1) of the parallelogram, said axis (12) being able to consist of a fixed rod - for example by riveting or welding - at the curved end of said extension of the rear upper arm (1), but in any case there must be a free articulation with a relatively large clearance between the tubular part (11) and the axis (12).
- a dowel or similar elastic (not shown), arranged at the part of the front end of said arm and near the front apex of the parallelogram, in correspondence with a tubular part (11) of the stirrup ( 8), which is freely articulated with clearances in all directions around an axis (12), which is connected to the extension of the
- the stirrup (8) When the cylinder is rising or, if necessary, descending, the stirrup (8) has a relatively high level of freedom, because it can move, although with relatively small but sufficient displacements, in n '' which direction, thanks to both the play between its tubular part (11) and the axis (12) disposed in the extension of the arm (1), that the two parts of the tip or wings (13) also have a transverse clearance relative to the extension of said arm (1) (see FIG. 4), because said two wings (13) are separated from each other at a distance greater than the proper width of said extension of arm (1), in a suitable measure.
- Said constitution and arrangement of both the stirrup (8) and the extension of the arm (1) provide a free articulation to the stirrup, which can adapt, within certain limits, to possible variations in position in all directions both of the jack relative to the bodywork and of possible variations of the geometry of the latter to the support part (by alterations in its manufacture or by possible blows received by the bodywork) and again by the own ground on which the jack rests through its foot (10).
- maximum adaptability of the jack is obtained with a relatively simple and inexpensive arrangement.
- the stirrup (8) has a zone (14) in inclined plane back and arranged at the upper part of the posterior transverse branch of the profile which determines the channel of the stirrup, zone located near its mouth and making part of it.
- This zone (14) determines a stop for the initial support, by the user of the actuator, against the corresponding flange (9) which presents the lower part of the bodywork of the motor vehicle, thereby facilitating the initial positioning ( placement and adjustment) of the actuator by the user.
- the jack is shown once said initial positioning has been done, by appreciating the face to face setting and the stop produced by said zone (14) with the flange (9); and all of this so that, as the cylinder unfolds, that is to say, rises, - by actuating its crank (6) (shown in Figure 1) -, said area (14) of the stirrup (8) cooperates in guiding said stirrup along the rim (9), which is directed correctly towards the inside of the channel of the stirrup profile and is placed therein without pressing against its bottom, until the horizontal support part of the stirrup arrives to establish contact against the lower horizontal plane of this zone of the bodywork of the automobile and afterwards, continuing the elevation of the jack, the body mounted to the desired position and which normally corresponds to that shown in Figure 4.
- the stirrup (8) could have an intermediate channel or rib (15) (FIGS. 1, 2, 3 and especially 5, 6, 7 and 9) which, at the same time as it determines a reinforcing effect on this part of the stirrup, establishes a theoretically punctual support on the axis (12), facilitating the free oscillation of the stirrup relative to the extension of the arm (1).
- the stirrup (8) has connected to the lower face of its flat front part and by means of a stamping or stamping down (16) which after is riveted as will be explained below, a centering device (17) ( see particularly Figures 4, 11, 12 and 13).
- the centering device (17) is laminar and elastic, having a general inverted "U" shape (in front view according to FIGS. 4 and 12), with its upper base arranged transversely to the stirrup (8) to which it is connected and which comprises a central section (18), elongated, flat and extended by each end in short sections inclined (19) and (20) opposite and symmetrically downward and outward.
- Each of said inclined sections has, in turn and respectively, a lateral extension (21) and (22) flat and vertical, each of said lateral extensions comprising an oblong part and with an axis perpendicular to said lower face of the stirrup to which is united the centering device, with an elongated orifice such as the orifice (23) (FIG. 11), which is in substantial dimensional correspondence with the internal orifice (24) (FIG. 9) of the tubular part (11) of the stirrup (8).
- the specific configuration of the centering device (7) gives rise to its very simple assembly, consisting of a single piece and it requires less labor for its installation, which represents a lower cost of the jack, and it should be noted that the worker only has to present and locate said centering device in the desired place for its union with the stirrup, with self-positioning of said centering device between the side walls or parallel wings of the extension of the arm (1 ) on which it is installed, at the same time eliminating possible mounting errors and making it easier, by obtaining more correct automatic centering of the caliper and an optimal balance of the jack, ensuring the stability of the 'assembly formed by the cylinder and the vehicle to which it is applied.
- the stirrup (8) is elastically connected by at least one spring (26) to the arm (1), for this purpose said spring is fixed by one end to the orifice (27) - by means, for example, of a extreme hook of the spring - and by its other end to an orifice (28) (see FIGS. 1, 2, 3, 5 and 6) of the stirrup (8), so that said spring holds the stirrup, when this- ci does not have the body of a vehicle applied, in an intermediate position with respect to those determined by the two extreme stops of the extension of the arm (1) as regards its relative pivoting, that is to say that said spring maintains the stirrup in the position shown in FIG.
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Abstract
Description
Le présent Modèle d'Utilité a pour objet un vérin mécanique perfectioné pour des véhicules automobiles, pour les élever et les descendre afin de remplacer la roue correspondante endommagée, normalement par crevaison ou coupure de son pneu et ledit vérin fournit, à la fonction à laquelle il est destiné, plusieurs avantages qui seront consignés plus loin, à part d'autres inhérents à sa constitution.The present Utility Model relates to an improved mechanical cylinder for motor vehicles, for raising and lowering them in order to replace the corresponding damaged wheel, normally by puncture or cutting of its tire and said cylinder provides, to the function to which it is intended, several advantages which will be noted later, apart from others inherent in its constitution.
On connaît un type de vérin mécanique pour élever des automobiles qui est protégé par le Modèle d'Utilité N. 279019, dont le titulaire et le propriétaire est le propre demandeur du présent Modèle d'Utilité, qui comprend un mécanisme basé sur quatre bras articulés entre eux et disposés sous forme de parallélogramme, muni d'une broche située dans une diagonale, étant approximativement horizontale dans la position opératoire du vérin, à ladite broche est relié, par son extrémité postérieure, un moyen pour pouvoir l'actionner en pivotement - comme une manivelle ou similaire - et l'extrémité avant de ladite broche est vissée à un écrou articulé au sommet avant du parallélogramme, tandis que l'extrémité opposée de la broche traverse une traverse, qui est articulée au sommet arrière opposé dudit parallélogramme.A type of mechanical jack for raising automobiles is known which is protected by Utility Model N. 279019, the holder and owner of which is the own applicant for this Utility Model, which includes a mechanism based on four articulated arms between them and arranged in the form of a parallelogram, provided with a spindle located in a diagonal, being approximately horizontal in the operating position of the jack, to said spindle is connected, by its rear end, a means for being able to actuate it by pivoting - like a crank or the like - and the front end of said spindle is screwed to a hinged nut at the front apex of the parallelogram, while the opposite end of the spindle passes through a cross member, which is hinged to the opposite rear apex of said parallelogram.
Dans ce type de vérin mécanique, l'extrémité arrière de la broche est terminé en une expansion postérieure, s'appuyant en pivotant sur ladite traverse, un roulement convenable étant intercalé pour faciliter ledit soutien tournant; quoiqu' il est évident que la position relative dedit soutien tournant et dudit écrou peut être inversée, de sorte que ce dernier soit disposé articulé au sommet arrière du parallélogramme, tandis que l'extrémité opposée de la broche soit disposée à la partie avant du vérin et traverse ladite traverse, dans ce cas articulé au sommet avant opposé dudit parallélogramme, en disposant à la partie avant et qui dépasse la broche un roulement pour faciliter un pivotement de la broche par rapport à ladite traverse, ainsi qu'une butée à la partie opposée interne dudit sommet avant du parallélogramme, pour retenir ledit sommet, et, en même temps, pour limiter la hauteur maximale du vérin.In this type of mechanical jack, the rear end of the spindle is terminated in a posterior expansion, bearing by pivoting on said cross member, a suitable bearing being inserted to facilitate said rotating support; although it is obvious that the relative position of said rotating support and said nut can be reversed, so that the latter is arranged articulated at the rear apex of the parallelogram, while the opposite end of the spindle is disposed at the front part of the jack and crosses said cross member, in this case articulated at the opposite front apex of said parallelogram, by arranging at the front part and which exceeds the spindle a bearing to facilitate pivoting of the spindle relative to said cross member, as well as a stop at the part internal opposite of said apex before the parallelogram, to retain said apex, and, at the same time, to limit the maximum height of the jack.
De plus, dans ledit type de vérin il existe, près du sommet supérieur du parallélogramme et en prolongement normalement du bras supérieur arrière, un moyen, dit étrier, pour le soutien et le support de l'automobile correspondante, tandis que le bras inférieur arrière du parallélogramme, qui part de son sommet arrière, est prolongé inférieurement en formant une patte de support du vérin, articulée à son tour à un pied pour son appui sur le sol. Dans l'union articulée entre l'extrémité inférieure de la patte et le pied cités il est disposé, quelquefois, un ressort pour maintenir la patte du vérin dans la position d'inclinaison maximale en arrière et vers le bas par rapport au pied, pour faciliter le positionnement initial du vérin par l'utilisateur et il existe, finalement, des butées en ce qui concerne ladite articulation entre la patte du vérin et son pied, correspondant respectivement à ses inclinaisons maximale et minimale relatives par rapport audit pied.In addition, in said type of actuator there is, near the upper top of the parallelogram and as a normal extension of the rear upper arm, a means, called stirrup, for the support and the support of the corresponding automobile, while the rear lower arm of the parallelogram, which starts from its rear apex, is extended lower by forming a support leg for the jack, in turn articulated with one foot for its support on the ground. In the articulated union between the lower end of the leg and the aforementioned foot, there is sometimes arranged a spring to maintain the leg of the jack in the position of maximum inclination back and down relative to the foot, to facilitate the initial positioning of the actuator by the user and there are, finally, stops as regards said articulation between the lug of the actuator and its foot, corresponding respectively to its maximum and minimum inclinations relative to said foot.
Les quatre bras du mécanisme de parallélogramme dudit vérin mécanique peuvent être constitués par des paires de fers plats parrallèles, le cas échéant avec leurs bords pliés en adoptant chacune d'eux la forme de "C", lesdits fers étant séparés para des noyaux correspondants en fonction d'axes d'articulation ou bien par des profils de coupe en "U", reliés par des axes d'articulation respectifs.The four arms of the parallelogram mechanism of said mechanical jack can be formed by pairs of parallel flat bars, if necessary with their edges folded, each taking the shape of "C", said bars being separated by corresponding cores in function of hinge axes or by "U" cut profiles, connected by respective hinge axes.
Le propre demandeur a également proposé un vérin mécanique objet du Modèle d'Utilité N. 9001330 qui, en étant du type décrit ci-dessus et incorporant les caractéristiques correspondantes à ce que l'étrier présente une partie tubulaire librement articulée, avec des jeux importants dans toutes les directions autour d'un axe transversal du prolongement du bras supérieur arrière du parallélogramme car la partie supérieure de la branche transversale postérieuree du profil de l'étrier présent, près de la bouche et en en faisant partie, une zone en plan incliné en arrière - qui, à son tour, correspond à l'objet du Modèle d'Utilité n. 8903891 du même demandeur - a, entre autres caractéristiques, celle correspondante à ce que ledit prolongement du bras supérieur arrière présente, en se pojetant depuis la face intérieure de chacune des deux ailes parallèles, des moyens élastiques opposés et dirigés vers le plan vertical moyen dudit bras, chacun desquels est appuyé élastiquement contre le bord longitudinal correspondant de la partie tubulaire de l'étrier, de préférence grâce à une extrémité déviée de chaque moyen et sensiblement parallèle audit bord.The own applicant also proposed a mechanical jack object of the Utility Model N. 9001330 which, being of the type described above and incorporating the characteristics corresponding to the fact that the stirrup has a freely articulated tubular part, with significant clearances in all directions around a transverse axis of the extension of the rear upper arm of the parallelogram because the upper part of the posterior transverse branch of the profile of the stirrup present, near the mouth and forming part of it, an area in inclined plane backwards - which, in turn, corresponds to the purpose of Utility Model n. 8903891 by the same applicant - has, among other characteristics, that corresponding to the fact that said extension of the rear upper arm has, by projecting itself from the inner face of each of the two parallel wings, elastic means opposite and directed towards the mean vertical plane of said arms, each of which is pressed elastically against the corresponding longitudinal edge of the tubular part of the stirrup, preferably by virtue of an end deviated from each means and substantially parallel to said edge.
Ledit vérin mécanique fournit, notamment, les avantages d'un centrage automatique de l'étrier à la position initiale et malgré son articulation libre, en assurant la stabilité de l'ensemble formé par le véhicule et le vérin aussi bien durant l'élévation et la descente du véhicule, qu'à la fin de son élévation pour changer la roue correspondante, en assurant ainsi le positionnement initial correct de l'étrier pour obtenir qu'il se situe dans une position convenable à la fin de son élévation, en éliminant ainsi un mauvais positionnement éventuel de l'étrier lorsque l'utilisateur situe le vérin sous la carrosserie du véhicule automobile, pour procéder à l'élévation de ladite carosserie. Par ailleurs, le demandeur a conçu des perfectionnements audit vérin mécanique, de sorte que le vérin mécanique perfectionné pour véhicules automobiles selon le présent Modèle d'Utilité est du type décrit précédemment et est caractérisé en ce que l'étrier présente, uni à la face inférieure de sa partie plate avant, un dispositif centreur laminaire, élastique et de forme générale en "U" inversé, avec sa base reliée à l'étrier, disposé transversalement par rapport à celui-ci et défini par un tronçon allongé central et plat, prolongé à chaque extrémiteé selon de courts tronçons inclinés de façon opposée et symétrique vers le bas et vers le dehors, chacun d'eux a, à son tour, un prolongement latéral plat et vertical, comprenant une partie oblongue et à axe perpendiculaire à ladite face inférieure de l'étrier, avec un orifice allongé en correspondance substantielle avec l'orifice interne de ladite partie tubulaire de l'étrier, et de sorte que les deux prolongements latéraux et parallèles du dispositif centreur s'appuient contre les faces intérieures correspondantes des deux ailes parallèles dudit prolongement du bras supérieur arrière; et le ressort se maintenant, au moins un ressort et par rapport au prolongement du bras qu'il articule, dans une position intermédiaire par rapport à celles déterminées par les deux butées des bouts dudit prolongement, en ce qui concerne son pivotement relatif.Said mechanical jack provides, in particular, the advantages of automatic centering of the stirrup in the initial position and despite its free articulation, by ensuring the stability of the assembly formed by the vehicle and the jack both during elevation and the descent of the vehicle, only at the end of its elevation to change the corresponding wheel, thus ensuring the correct initial positioning of the caliper to obtain that it is in a suitable position at the end of its elevation, eliminating thus a possible bad positioning of the stirrup when the user locates the jack under the body of the motor vehicle, in order to raise said body. Furthermore, the applicant has designed improvements to said mechanical cylinder, so that the improved mechanical cylinder for motor vehicles according to this Utility Model is of the type described above and is characterized in that the stirrup has, united to the underside of its front flat part, a laminar centering device, elastic and generally of inverted "U" shape, with its base connected to the stirrup, arranged transversely to this one and defined by an elongated central and flat section, extended at each extremity according to short sections inclined in an opposite and symmetrical way downwards and outwards, each of them has, in its turn, a flat lateral extension and vertical, comprising an oblong part and with an axis perpendicular to said lower face of the stirrup, with an elongated orifice in substantial correspondence with the internal orifice of said tubular part of the stirrup, and so that the two lateral and parallel extensions of the centering device bear against the corresponding inner faces of the two parallel wings of said extension of the rear upper arm; and the spring is now, at least one spring and relative to the extension of the arm which it articulates, in an intermediate position relative to those determined by the two stops of the ends of said extension, as regards its relative pivoting.
Le présent vérin mécanique perfectionné pour véhicules automobiles fournit, notamment, les avantages d'un montage du dispositif centreur à l'étrier du vérin plus simple et avec moins de pièces - une seule - et de main d'oeuvre, avec l'économie qui en découle dans son coût, l'ouvrier n'ayant pas à le centrer durant son montage, car il reste automatiquement centré lorsqu'on le place, étant donné sa configuration, et tout cela sans diminution de sa fonction de centrage automatique de l'étrier à sa position initiale et malgré son articulation libre, sans l'empêcher en quelque direction possible qu'adopte l'étrier autour de l'axe transversal du prolongement du bras supérieur arrière sur lequel est monté ledit étrier, en assurant le positionnement initial correct dudit étrier selon il a été exposé précédemment. Le vérin mécanique perfectionné pour véhicules automobiles objet de l'invention offre les avantages qui ont été décrits auparavant, à part d'autres qui seront facilement déduits de l'exemple de réalisation dudit vérin, qui est décrit avec plus de détails à la suite pour faciliter la compréhension des caractéristiques exposées précédemment, en faisant connaître en même temps divers détails et pour ce des dessins sont annexés dans lesquels, seulement à titre d'exemple et non limitatif de la portée de la présente invention, est représenté un cas pratique dudit vérin.The present improved mechanical actuator for motor vehicles provides, in particular, the advantages of mounting the centering device to the caliper of the actuator simpler and with fewer parts - only one - and less labor, with the economy which this results in its cost, the worker not having to center it during its assembly, because it remains automatically centered when it is placed, given its configuration, and all this without reducing its automatic centering function. stirrup in its initial position and despite its free articulation, without preventing it in any possible direction that the stirrup adopts around the transverse axis of the extension of the rear upper arm on which said stirrup is mounted, ensuring the correct initial positioning said stirrup according to it has been exposed previously. The improved mechanical cylinder for motor vehicles object of the invention offers the advantages which have been described previously, apart from others which will be easily deduced from the example of embodiment of said cylinder, which is described in more detail below for to facilitate the understanding of the characteristics exposed previously, by making known at the same time various details and for this drawings are annexed in which, only by way of example and not limiting of the scope of the present invention, is represented a practical case of said cylinder .
Dans les dessins, la figure 1 montre une vue de côté en élévation du vérin à sa position repliée et avec sa manivelle encore rentrée, et il faut signaler que dans cette figure et les suivantes le vérin est représenté sous forme schématisée en ce qui concerne la broche (sans dessiner ses moyens de vissage et d'appui et de guide); dans la figure 2 on montre ledit vérin ( avec une partie de la manivelle) qui commence à se déplier et disposé en position appropriée au-dessous de la carrosserie du véhicule (dont on ne représente , en pointillé, qu'une partie inférieure de celle-ci avec son rebord); la figure 3 montre ledit vérin dans une position élevée de celui-ci, c'est-à-dire, dans une position élevée du véhicule auquel il est appliqué (sans dessiner la manivelle); la figure 4 correspond à une section par A-A de la figure 2 et montre un détail de l'articulation libre de l'étrier, ainsi que du dispositif centreur; dans les figures 5 et 6 est représenté à plus grande échelle, l'étrier en élévation latérale et en plan, respectivement; dans la figure 7 est détaillée la coupe B-B de la figure 5; la figure 8 correspond à une élévation frontale avant de l'étrier; les figures 9 et 10 correspondent respectivement, aux coupes selon C-C et D-D de la figure 8; et les figures 11, 12 et 13 montrent, respectivement et à une échelle plus grande, le dispositif centreur selon les vues en élévation latérale, frontale et en plan.In the drawings, Figure 1 shows a side view in elevation of the cylinder in its folded position and with its crank still retracted, and it should be noted that in this figure and the following the cylinder is shown in schematic form as regards the spindle (without drawing its means of screwing and support and guide); in Figure 2 there is shown said cylinder (with a part of the crank) which begins to unfold and arranged in an appropriate position below the vehicle body (of which there is shown, in dotted lines, only a lower part of that -this with its rim); Figure 3 shows said cylinder in an elevated position thereof, that is to say, in an elevated position of the vehicle to which it is applied (without drawing the crank); Figure 4 corresponds to a section through A-A of Figure 2 and shows a detail of the free joint of the stirrup, as well as the centering device; in Figures 5 and 6 is shown on a larger scale, the stirrup in side elevation and in plan, respectively; in Figure 7 is detailed section B-B of Figure 5; Figure 8 corresponds to a front elevation before the stirrup; Figures 9 and 10 correspond respectively to the sections along C-C and D-D of Figure 8; and Figures 11, 12 and 13 show, respectively and on a larger scale, the centering device according to the side, front and plan elevation views.
Selon lesdites figures, le vérin mécanique perfectionné pour véhicules automobiles présente quatre bras (1), (2), (3) et (4) (voir en particulier la figure 3) qui sont articulés entre eux et sont disposés selon un parallélogramme, muni d'une broche (5) - schématisé par un axe géométrique - situé dans une diagonale du parallélogramme, ladite diagonale varie angulairement de position selon il découle de la comparaison entre les figures 1, 2 et 3, durant l'actionnement du vérin.According to said figures, the improved mechanical cylinder for motor vehicles has four arms (1), (2), (3) and (4) (see in particular FIG. 3) which are articulated with one another and are arranged in a parallelogram, provided a spindle (5) - shown schematically by a geometric axis - located in a diagonal of the parallelogram, said diagonal varies angularly in position depending on it follows from the comparison between Figures 1, 2 and 3, during actuation of the jack.
A l'extrémité postérieure de la broche (5) est unie une manivelle (6) (figure 1) comme moyen pour que son utilisateur puisse actionner la broche en pivotement, pour obtenir son déploiement ou repli, c'est-à-dire, pour élever ou descendre l'étrier du vérin et, par conséquent, la carrosserie du véhicule automobile auquelle il est appliqué. Dans cet exemple, la manivelle (6) est articulée inséparablement à l'extrémité arrière de la broche (5), des butées existant pour établir son positionnement opératoire et présentant, en outre et facultativement, un mécanisme de retenue (7) pour fixer temporairement ladite manivelle à la position repliée du vérin et pour le garder à sa place dans le véhicule; si bien l'actionnement pivotant de la broche (5) pourrait se faire par d'autres moyens et même ils pourraient consister en une union séparable ou démontable entre la manivelle ou similaire et l'extrémité postérieure de la broche.At the rear end of the spindle (5) is joined a crank (6) (Figure 1) as a means so that its user can actuate the spindle in pivoting, to obtain its deployment or folding, that is to say, for raising or lowering the caliper of the jack and, consequently, the bodywork of the motor vehicle to which it is applied. In this example, the crank (6) is inseparably articulated at the rear end of the spindle (5), stops existing to establish its operating position and having, in addition and optionally, a retaining mechanism (7) for temporarily fixing said crank in the folded position of the jack and to keep it in its place in the vehicle; if the pivoting actuation of the spindle (5) could be done by other means and even they could consist of a separable or removable union between the crank or the like and the rear end of the spindle.
La broche (5) est soutenue par des moyens de soutien qui peuvent consister en un roulement ou d'autres moyens convenables pour retenir à cette extrémité avant de la broche en position et, en même temps, faciliter son pivotement par rapport au sommet avant du parallélogramme; et ladite broche est vissée à des moyens de vissage ou écrou permettant à la broche de se déplacer par rapport au sommet arrière du parallélogramme du vérin selon le sens de pivotement que l'on donne à la manivelle (6). La situation du roulement ou similaire et de l'écrou pourrait être inversée, c'est-à-dire, que ce dernier serait disposé au sommet avant du parallélogramme et le roulement serait disposé au sommet arrière de celui-ci.The spindle (5) is supported by support means which may consist of a bearing or other suitable means for retaining at this front end of the spindle in position and, at the same time, facilitating its pivoting with respect to at the front vertex of the parallelogram; and said spindle is screwed to screwing means or nut allowing the spindle to move relative to the rear apex of the parallelogram of the jack according to the direction of pivoting that is given to the crank (6). The situation of the bearing or the like and of the nut could be reversed, that is to say, the latter would be disposed at the front apex of the parallelogram and the bearing would be disposed at the rear apex of the latter.
Le vérin présente, près de sommet supérieur de celui-ci et normalement dans un prolongement du bras supérieur arrière (1), un étrier (8) (figures 1 a 4 et en particulier 5 à 10) pour l'appui et le soutien du véhicule automobile auquel il est appliqué, ledit étrier étant généralement, tel que celui qui est représenté, articulé au bout dudit prolongement du bras (1) et étant également conventionnel l'étrier en forme de "U" ou de "V", en déterminant un canal dans lequel on peut librement loger le rebord inférieur (9) que présente la partie inférieure correspondante de la carrosserie du véhicule, renforcée dans cette zone pour résister les efforts mécaniques de l'appui de l'étrier du vérin pour élever ledit véhicule. Evidemement, l'étrier pourrait présenter une autre constitution appropriée pour s'adapter à ladite partie inférieure de la carrosserie du véhicule, en présentant une configuration convenable à cette fin. Le rebord (9) sert à guider l'étrier (8) et à empêcher son éventuel glissement inopportun, sans que ledit rebord s'appuie sur le fond du canal de l'étrier.The cylinder has, near the upper top thereof and normally in an extension of the rear upper arm (1), a stirrup (8) (Figures 1 to 4 and in particular 5 to 10) for the support and the support of the motor vehicle to which it is applied, said stirrup being generally, such as that which is represented, articulated at the end of said extension of the arm (1) and also being conventional the stirrup in the shape of "U" or "V", determining a channel in which the lower rim (9) which the corresponding lower part of the vehicle body can have, can be freely accommodated, reinforced in this zone to resist the mechanical forces of the support of the caliper of the jack to raise said vehicle. Obviously, the stirrup could have another suitable constitution to adapt to said lower part of the vehicle body, having a configuration suitable for this purpose. The rim (9) is used to guide the stirrup (8) and to prevent its possible untimely sliding, without said rim resting on the bottom of the stirrup channel.
Le bras inférieur arrière (2), qui part du sommet arrière du parallélogramme du vérin, présente un prolongement inférieur (2a) qui forme la patte de support du vérin proprement dite, en séparant le parallélogramme du sol et est articulé à un pied (10) pour s'appuyer sur le sol ou surface correspondante.The rear lower arm (2), which starts from the rear apex of the cylinder parallelogram, has a lower extension (2a) which forms the support leg of the cylinder proper, separating the parallelogram from the ground and is articulated to a foot (10 ) to rest on the ground or corresponding surface.
Afin de limiter les mouvements d'articulation entre la patte et le pied du vérin, on peut disposer pour cela des moyens de butée, pouvant consister en des éléments complémentaires ou bien être déterminés par la propre configuration du bord inférieur du prolongement (2a), tel qu'il est montré dans les figures 1, 2 et 3; il peut exister des moyens élastiques pour maintenir le pied à la position représentée dans la figure 1, lorsqu'il est plié.In order to limit the articulation movements between the lug and the foot of the jack, it is possible for this purpose to have stop means, which may consist of complementary elements or else be determined by the own configuration of the lower edge of the extension (2a), as shown in Figures 1, 2 and 3; there may be elastic means to maintain the foot in the position shown in Figure 1, when folded.
Le bras supérieur avant (4) pourra incorporer une cheville ou similaire élastique (non représentée), disposée à la partie du bout avant dudit bras et près du sommet avant du parallélogramme, en correspondance avec une partie tubulaire (11) de l'étrier (8), laquelle est articulée librement avec des jeux notables dans toutes les directions autour d'un axe(12), qui est relié au prolongement du bras supérieur arrière (1) du parallélogramme, ledit axe (12) pouvant consister en une tige fixée - par exemple par rivetage ou par soudure - à l'extrémité courbe dudit prolongement du bras supérieur arrière (1), mais de toutes façons il faut qu'il existe une articulation libre avec un jeu relativement important entre la partie tubulaire (11) et l'axe (12). Avec cet agencement supposé lorsque le vérin serait plié (figure 1), ladite partie tubulaire (11) s'appuierait contre ladite cheville élastique de sorte que ladite partie tubulaire inférieure de l'étrier (8) resterait fortement appliquée contre l'axe (12), ledit étrier étant ainsi immobilisé.The upper front arm (4) may incorporate a dowel or similar elastic (not shown), arranged at the part of the front end of said arm and near the front apex of the parallelogram, in correspondence with a tubular part (11) of the stirrup ( 8), which is freely articulated with clearances in all directions around an axis (12), which is connected to the extension of the rear upper arm (1) of the parallelogram, said axis (12) being able to consist of a fixed rod - for example by riveting or welding - at the curved end of said extension of the rear upper arm (1), but in any case there must be a free articulation with a relatively large clearance between the tubular part (11) and the axis (12). With this arrangement assumed when the cylinder is folded (Figure 1), said tubular part (11) would be pressed against said elastic pin so that said lower tubular part of the stirrup (8) would remain strongly pressed against the axis (12 ), said stirrup being thus immobilized.
Lorsque le vérin est en train de s'élever ou, le cas échéant, de descendre, l'étrier (8) présente un niveau de liberté relativement élevé, car il peut se mouvoir, quoique avec des déplacements relativement petits mais suffisants, dans n'importe quelle direction, grâce aussi bien au jeu existant entre sa partie tubulaire (11) et l'axe (12) disposé dans le prolongement du bras (1), qu'au fait que les deux parties du bout ou ailes (13) présentent aussi un jeu transversal par rapport au prolongement dudit bras (1) (voir figure 4), car lesdites deux ailes (13) se trouvent séparées entre elles à une distance plus grande que la largeur propre dudit prolongement du bras (1), dans une mesure convenable.When the cylinder is rising or, if necessary, descending, the stirrup (8) has a relatively high level of freedom, because it can move, although with relatively small but sufficient displacements, in n '' which direction, thanks to both the play between its tubular part (11) and the axis (12) disposed in the extension of the arm (1), that the two parts of the tip or wings (13) also have a transverse clearance relative to the extension of said arm (1) (see FIG. 4), because said two wings (13) are separated from each other at a distance greater than the proper width of said extension of arm (1), in a suitable measure.
Lesdites constitution et agencement aussi bien de l'étrier (8) que du prolongement du bras (1) fournissent une articulation libre à l'étrier, qui peut s'adapter, dans certaines limites, à d'éventuelles variations de position dans toutes les directions aussi bien du vérin par rapport à la carrosserie que de possibles variations de la géométrie de cette dernière à la partie d'appui (par des altérations dans sa fabrication ou par d'éventuels coups reçus par la carrosserie) et encore par la propre terrain sur lequel s'appuie le vérin à travers son pied (10). Ainsi, il est obtenu une adaptabilité maximale du vérin avec un agencement relativement simple et bon marché.Said constitution and arrangement of both the stirrup (8) and the extension of the arm (1) provide a free articulation to the stirrup, which can adapt, within certain limits, to possible variations in position in all directions both of the jack relative to the bodywork and of possible variations of the geometry of the latter to the support part (by alterations in its manufacture or by possible blows received by the bodywork) and again by the own ground on which the jack rests through its foot (10). Thus, maximum adaptability of the jack is obtained with a relatively simple and inexpensive arrangement.
Par ailleurs, l'étrier (8) a une zone (14) en plan incliné en arrière et agencée à la partie supérieure de la branche transversale postérieure du profil qui détermine le canal de l'étrier, zone située près de sa bouche et faisant partie de celle-ci. Cette zone (14) détermine une butée pour l'appui initial, par l'utilisateur du vérin, contre le rebord (9) correspondant vers le bas que présente la partie inférieure de la carrosserie du véhicule automobile, en facilitant ainsi le positionnement initial (placement et réglage) du vérin par l'utilisateur. Dans la figure 2 il est montré le vérin une fois ledit positionnement initial a été fait, en y appréciant la mise face à face y la butée réalisée par ladite zone (14) avec le rebord (9);et tout cela de sorte que, au fur et à mesure que le vérin se déplie, c'est-à-dire, s'élève, - par l'actionnement de sa manivelle (6) (représentée dans la figure 1) -, ladite zone (14) de l'étrier (8) coopère au guidage dudit étrier le long du rebord (9), qui se dirige correctement vers l'intérieur du canal du profil de l'étrier et se place dans celui-ci sans s'appuyer contre son fond, jusqu'à ce que la partie d'appui horizontal de l'étrier arrive à établir un contact contre le plan horizontal inférieur de cette zone de la carrosserie de l'automobile et après, en continuant l'élévation du vérin, on obtient également la montée de la carrosserie jusqu'à la position souhaitée et qui correspond normalement à celle représentée dans la figure 4.Furthermore, the stirrup (8) has a zone (14) in inclined plane back and arranged at the upper part of the posterior transverse branch of the profile which determines the channel of the stirrup, zone located near its mouth and making part of it. This zone (14) determines a stop for the initial support, by the user of the actuator, against the corresponding flange (9) which presents the lower part of the bodywork of the motor vehicle, thereby facilitating the initial positioning ( placement and adjustment) of the actuator by the user. In FIG. 2, the jack is shown once said initial positioning has been done, by appreciating the face to face setting and the stop produced by said zone (14) with the flange (9); and all of this so that, as the cylinder unfolds, that is to say, rises, - by actuating its crank (6) (shown in Figure 1) -, said area (14) of the stirrup (8) cooperates in guiding said stirrup along the rim (9), which is directed correctly towards the inside of the channel of the stirrup profile and is placed therein without pressing against its bottom, until the horizontal support part of the stirrup arrives to establish contact against the lower horizontal plane of this zone of the bodywork of the automobile and afterwards, continuing the elevation of the jack, the body mounted to the desired position and which normally corresponds to that shown in Figure 4.
L'étrier (8) pourrait présenter un canal ou nervure intermédiaire (15) (figures 1,2, 3 et spécialement 5, 6, 7 et 9) qui, en même temps qu'elle détermine un effet de renforcement à cette partie de l'étrier, établit un appui théoriquement ponctuel sur l'axe (12), en facilitant la libre oscillation de l'étrier par rapport au prolongement du bras (1).The stirrup (8) could have an intermediate channel or rib (15) (FIGS. 1, 2, 3 and especially 5, 6, 7 and 9) which, at the same time as it determines a reinforcing effect on this part of the stirrup, establishes a theoretically punctual support on the axis (12), facilitating the free oscillation of the stirrup relative to the extension of the arm (1).
L'étrier (8) a relié à la face inférieure de sa partie plate avant et au moyen d'un estampage ou emboutissage vers le bas (16) qui après est riveté comme il sera expliqué plus loin, un dispositif centreur (17) (voir particulièrement les figures 4, 11, 12 et 13). Le dispositif centreur (17) est laminaire et élastique, en présentant une forme générale en "U" inversé (en vue frontale selon les figures 4 et 12), avec sa base supérieure disposée transversalement para rapport à l'étrier (8) auquel il est relié et qui comprend un tronçon central (18), allongé, plat et prolongé par chaque extrémité selon de courts tronçons inclinés (19) et (20) de façon opposé et symétrique vers le bas et vers le dehors. Chacun desdits tronçons inclinés a, à son tour et respectivement, un prolongement latéral (21) et (22) plat et vertical, chacun desdits prolongements latéraux comprenant une partie oblongue et à axe perpendiculaire à ladite face inférieure de l'étrier à laquelle est uni le dispositif centreur, avec un orifice allongé tel que l'orifice (23) (figure 11), qui est en correspondance dimensionelle substantielle avec l'orifice interne (24) (figure 9) de la partie tubulaire (11) de l'étrier (8).The stirrup (8) has connected to the lower face of its flat front part and by means of a stamping or stamping down (16) which after is riveted as will be explained below, a centering device (17) ( see particularly Figures 4, 11, 12 and 13). The centering device (17) is laminar and elastic, having a general inverted "U" shape (in front view according to FIGS. 4 and 12), with its upper base arranged transversely to the stirrup (8) to which it is connected and which comprises a central section (18), elongated, flat and extended by each end in short sections inclined (19) and (20) opposite and symmetrically downward and outward. Each of said inclined sections has, in turn and respectively, a lateral extension (21) and (22) flat and vertical, each of said lateral extensions comprising an oblong part and with an axis perpendicular to said lower face of the stirrup to which is united the centering device, with an elongated orifice such as the orifice (23) (FIG. 11), which is in substantial dimensional correspondence with the internal orifice (24) (FIG. 9) of the tubular part (11) of the stirrup (8).
L'union du dispositif centreur (17) à ladite partie avant de l'étrier (8) se fait par l'introduction de l'estampage ou l'emboutissage (16) de l'étrier (8) à travers l'orifice central (25) (figure 13) disposé sur le tronçon central (18) et avec postérieur rivetage dudit estampage au-dessous dudit tronçon central (voir figures 1 à 3 et spécialement 4). Il est évident que la fixation du dispositif centreur (17) à l'étrier (8) pourra se faire par tout autre moyen conventionnel, y inclus des moyens mécaniques tels que vis ou rivets indépendants, soudure, etc.The union of the centering device (17) with said front part of the stirrup (8) is effected by the introduction of the stamping or the stamping (16) of the stirrup (8) through the central orifice (25) (Figure 13) disposed on the central section (18) and with posterior riveting of said stamping below said central section (see Figures 1 to 3 and especially 4). It is obvious that the fixing of the centering device (17) to the stirrup (8) can be done by any other conventional means, including mechanical means such as independent screws or rivets, welding, etc.
Etant donné la configuration et élasticité propres du dispositif centreur (17) décrit, ainsi que l'appui des prolongements latéraux (21) et (22) contre les respectives faces intérieures des deux ailes parallèles du prolongement du bras (1) du vérin, on obtient un centrage automatique de l'étrier (8) par rapport audit prolongement du bras (1), mais sans empêcher le jeu transversal de l'étrier para rapport au bras sur le prolongement duquel il est monté, c'est-à-dire, que la liberté de mouvements relative entre ledit étrier (8) et le prolongement du bras (1) sur lequel il est monté n'est pas empêchée, grâce aux orifices allongés tels que l'orifice (23) du dispositif centreur (17), sans perte de son action de centrage automatique souhaitée.Given the specific configuration and elasticity of the centering device (17) described, as well as the support of the lateral extensions (21) and (22) against the respective inner faces of the two parallel wings of the extension of the arm (1) of the jack, we obtains automatic centering of the stirrup (8) relative to said extension of the arm (1), but without preventing the transverse play of the stirrup relative to the arm on the extension of which it is mounted, that is to say , that the relative freedom of movement between said stirrup (8) and the extension of the arm (1) on which it is mounted is not prevented, by virtue of the elongated orifices such as the orifice (23) of the centering device (17) , without losing its desired automatic centering action.
La configuration propre du dispositif centreur (7) donne lieu à ce que son montage soit très simple, soit constitué par une seule pièce et il faille moins de main d'oeuvre pour son installation, ce qui représente un coût plus bas du vérin, et il faut signaler que l'ouvrier n'a qu'à présenter et situer ledit dispositif centreur à la place souhaitée pour son union à l'étrier, avec un autopositionnement dudit dispositif centreur entre les parois latérales ou ailes parallèles du prolongement du bras (1) sur lequel il s'installe, en éliminant en même temps de possibles erreurs de montage et en le rendant plus facile, en obtenant de plus un centrage correct automatique de l'étrier et un équilibre optimal du vérin, en assurant la stabilité de l'ensemble formé par le vérin et le véhicule auquel il est appliqué.The specific configuration of the centering device (7) gives rise to its very simple assembly, consisting of a single piece and it requires less labor for its installation, which represents a lower cost of the jack, and it should be noted that the worker only has to present and locate said centering device in the desired place for its union with the stirrup, with self-positioning of said centering device between the side walls or parallel wings of the extension of the arm (1 ) on which it is installed, at the same time eliminating possible mounting errors and making it easier, by obtaining more correct automatic centering of the caliper and an optimal balance of the jack, ensuring the stability of the 'assembly formed by the cylinder and the vehicle to which it is applied.
Le centrage automatique de l'étrier (8) par rapport au prolongement du bras (1) est obtenu grâce à l'effet élastique du dispositif centreur (17), qui, lorsqu'il est déformé, engendre des forces élastiques qui tendent à récupérer la position initiale de l'étrier lorsque les efforts de déformation cessent.The automatic centering of the stirrup (8) relative to the extension of the arm (1) is obtained thanks to the elastic effect of the centering device (17), which, when deformed, generates elastic forces which tend to recover the initial position of the stirrup when the deformation efforts cease.
L'étrier (8) est élastiquement relié par au moins un ressort (26) au bras (1), à cette fin ledit ressort est fixé par un bout à l'orifice (27) - au moyen, par exemple, d'un crochet extrême du ressort - et par son autre bout à un orifice (28) (voir figures 1, 2, 3, 5 et 6) de l'étrier (8), de sorte que ledit ressort maintiene l'étrier, lorsque celui-ci n'a pas la carosserie d'un véhicule appliquée, dans une position intermédiaire par rapport à celles déterminées par les deux butées extrêmes du prolongement du bras (1) en ce qui concerne son pivotement relatif, c'est-à-dire que ledit ressort maintient l'étrier à la position montrée dans la figure 1, soit, un peu élevée par rapport à la position inférieure qu'il pourrait occuper s'il n'était pas soumis à une certaine tension dudit ressort, en assurant ainsi le positionnement initial correct de l'étrier pour obtenir une position convenable et correcte à la fin de l'élévation du vérin avec la carrosserie à laquelle elle se trouve appliquée (figure 3), indépendamment du fait que la hauteur ait varié par rapport au sol de la carrosserie du véhicule à élever par rapport à la hauteur prévue à l'usine pour celui-ci, soit par une variation de la charge à laquelle le véhicule est soumis (personnes etc.) ou parce que la suspension a cédé, de sorte que l'on élimine également un mauvais positionnement initial éventuel de l'étrier lorsque l'utilisateur situe le vérin sous la carrosserie pour procéder à l'élévation du véhicule, ce qui peut arriver dans le cas où l'étrier serait libre et, donc pourrait adopter une position intermédaire inopportune. Le ou les ressorts (26) seront montés normalment sur la partie extérieure latérale du bras (1), quoiqu'ils pourraient être situés dans une autre situation convenable.The stirrup (8) is elastically connected by at least one spring (26) to the arm (1), for this purpose said spring is fixed by one end to the orifice (27) - by means, for example, of a extreme hook of the spring - and by its other end to an orifice (28) (see FIGS. 1, 2, 3, 5 and 6) of the stirrup (8), so that said spring holds the stirrup, when this- ci does not have the body of a vehicle applied, in an intermediate position with respect to those determined by the two extreme stops of the extension of the arm (1) as regards its relative pivoting, that is to say that said spring maintains the stirrup in the position shown in FIG. 1, that is to say, a little high compared to the lower position which it could occupy if it was not subjected to a certain tension of said spring, thus ensuring the correct initial positioning of the stirrup to obtain a suitable and correct position at the end of the jacking up with the body at which it is applied (Figure 3), regardless of whether the height has varied from the ground of the body of the vehicle to be raised from the height provided at the factory for it, either by a variation of the load to which the vehicle is subjected (persons etc.) or because the suspension has failed, so that a possible initial bad positioning of the caliper is also eliminated when the user locates the jack under the body to raise the vehicle, which can happen in the event that the the stirrup would be free and, therefore, could adopt an inappropriate intermediate position. The spring (s) (26) will normally be mounted on the lateral lateral part of the arm (1), although they could be located in another suitable situation.
Il faut constater que, dans la réalisation du vérin mécanique perfectionné pour véhicules objet du présent Modèle d'Utilité, on pourra appliquer toutes les variantes de détail que l'expérience et la pratique puissent conseiller en ce qui concerne les formes et les dimensions, aussi bien absolues que relatives, et les matériaux employés pour celui-ci et restantes circonstances de caractère accessoire, ainsi que pourront être introduites toutes modifications de détail de construction qui seraient compatibles avec l'essentialité de ce qui est revendiqué, car tout cela est compris dans l'esprit des revendications suivantes.It should be noted that, in the production of the improved mechanical actuator for vehicles which are the subject of this Utility Model, it will be possible to apply all the variants of detail that experience and practice can advise with regard to the shapes and dimensions, also as absolute as relative, and the materials used for it and the remaining circumstances of an ancillary nature, as well as any modifications of construction detail which may be compatible with the essentiality of what is claimed may be introduced, since all this is included in the spirit of the following claims.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9002389U ES1014898Y (en) | 1990-07-30 | 1990-07-30 | PERFECTED MECHANICAL JACK FOR AUTOMOBILE VEHICLES. |
ES9002389U | 1990-07-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0469234A1 true EP0469234A1 (en) | 1992-02-05 |
EP0469234B1 EP0469234B1 (en) | 1995-03-01 |
Family
ID=8268864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910104996 Expired - Lifetime EP0469234B1 (en) | 1990-07-30 | 1991-03-28 | Vehicle lifting jack |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0469234B1 (en) |
DE (1) | DE69107721T2 (en) |
ES (1) | ES1014898Y (en) |
PT (1) | PT8277U (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0516314A2 (en) * | 1991-05-29 | 1992-12-02 | Metallifacture Limited | Vehicle jacks |
EP0529355A1 (en) * | 1991-08-22 | 1993-03-03 | AUGUST BILSTEIN GMBH & CO. KG | Vehicle jack |
FR2692241A1 (en) * | 1992-06-12 | 1993-12-17 | Fabrication Accessoires Automo | Automobile vehicle folding quadrilateral screw jack - has two pairs of arms pivoted together with opposite pivots carrying screw and nut and free arm ends extended as supports |
FR2692240A1 (en) * | 1992-06-12 | 1993-12-17 | Fabrication Accessoires Automo | Automobile vehicle screw jack with pivoting arms - includes pair of arms which are pivoted at each base,and ends bearing against vehicle and ground respectively, with small rods pivoting near arm centres carrying screw |
EP0611241A1 (en) * | 1993-02-08 | 1994-08-17 | Tub S.A. | Stabilizing and reinforcing device for vehicle-raising jacks |
EP0622329A1 (en) * | 1993-03-30 | 1994-11-02 | Tub S.A. | Automatic stabilizing and reinforcing device for vehicle raising jacks |
EP0744375A1 (en) * | 1995-05-26 | 1996-11-27 | FIAT AUTO S.p.A. | A lifting jack for a car |
EP0936176A1 (en) * | 1998-02-05 | 1999-08-18 | Krupp Bilstein GmbH | Car jack |
WO2003084857A1 (en) * | 2002-04-09 | 2003-10-16 | Thyssenkrupp Bilstein Gmbh | Connection of a pivotal supporting plate |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19521994A1 (en) * | 1995-06-20 | 1997-01-02 | Bilstein August Gmbh Co Kg | Motorcar lifter with stand body standing on ground |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2388004A (en) * | 1944-05-17 | 1945-10-30 | John C Mclaughlin | Lifting jack |
FR1075818A (en) * | 1953-04-13 | 1954-10-20 | Manuf D Outil Pour Garages Wil | Support device allowing the fixed orientation of a steerable vehicle wheel |
DE7414229U (en) * | 1974-07-25 | Allendorfer Fabrik Fuer Stahlverarbeitung Panne H Kg | Jack | |
DE3036584A1 (en) * | 1980-09-27 | 1982-05-13 | E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen | Mechanical car lift jack - has foot with crank swivel arm, with pivoted element recessed to locate projection of car bottom |
DE8702290U1 (en) * | 1987-02-14 | 1987-07-16 | August Bilstein Gmbh & Co Kg, 58256 Ennepetal | Car jack |
-
1990
- 1990-07-30 ES ES9002389U patent/ES1014898Y/en not_active Expired - Lifetime
-
1991
- 1991-03-28 EP EP19910104996 patent/EP0469234B1/en not_active Expired - Lifetime
- 1991-03-28 DE DE1991607721 patent/DE69107721T2/en not_active Expired - Fee Related
- 1991-04-18 PT PT827791U patent/PT8277U/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7414229U (en) * | 1974-07-25 | Allendorfer Fabrik Fuer Stahlverarbeitung Panne H Kg | Jack | |
US2388004A (en) * | 1944-05-17 | 1945-10-30 | John C Mclaughlin | Lifting jack |
FR1075818A (en) * | 1953-04-13 | 1954-10-20 | Manuf D Outil Pour Garages Wil | Support device allowing the fixed orientation of a steerable vehicle wheel |
DE3036584A1 (en) * | 1980-09-27 | 1982-05-13 | E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen | Mechanical car lift jack - has foot with crank swivel arm, with pivoted element recessed to locate projection of car bottom |
DE8702290U1 (en) * | 1987-02-14 | 1987-07-16 | August Bilstein Gmbh & Co Kg, 58256 Ennepetal | Car jack |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1, no. 60 10 Juin 1977 & JP-A-52 009 260 ( NOBUYUKI KAMAGA ) 24 Janvier 1977 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0516314A2 (en) * | 1991-05-29 | 1992-12-02 | Metallifacture Limited | Vehicle jacks |
EP0516314A3 (en) * | 1991-05-29 | 1994-02-23 | Metallifacture Ltd | |
EP0529355A1 (en) * | 1991-08-22 | 1993-03-03 | AUGUST BILSTEIN GMBH & CO. KG | Vehicle jack |
FR2692241A1 (en) * | 1992-06-12 | 1993-12-17 | Fabrication Accessoires Automo | Automobile vehicle folding quadrilateral screw jack - has two pairs of arms pivoted together with opposite pivots carrying screw and nut and free arm ends extended as supports |
FR2692240A1 (en) * | 1992-06-12 | 1993-12-17 | Fabrication Accessoires Automo | Automobile vehicle screw jack with pivoting arms - includes pair of arms which are pivoted at each base,and ends bearing against vehicle and ground respectively, with small rods pivoting near arm centres carrying screw |
EP0611241A1 (en) * | 1993-02-08 | 1994-08-17 | Tub S.A. | Stabilizing and reinforcing device for vehicle-raising jacks |
EP0622329A1 (en) * | 1993-03-30 | 1994-11-02 | Tub S.A. | Automatic stabilizing and reinforcing device for vehicle raising jacks |
EP0744375A1 (en) * | 1995-05-26 | 1996-11-27 | FIAT AUTO S.p.A. | A lifting jack for a car |
EP0936176A1 (en) * | 1998-02-05 | 1999-08-18 | Krupp Bilstein GmbH | Car jack |
WO2003084857A1 (en) * | 2002-04-09 | 2003-10-16 | Thyssenkrupp Bilstein Gmbh | Connection of a pivotal supporting plate |
Also Published As
Publication number | Publication date |
---|---|
DE69107721D1 (en) | 1995-04-06 |
PT8277U (en) | 1994-06-30 |
ES1014898U (en) | 1991-05-01 |
PT8277T (en) | 1992-01-31 |
EP0469234B1 (en) | 1995-03-01 |
DE69107721T2 (en) | 1995-07-06 |
ES1014898Y (en) | 1991-11-16 |
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