EP0611241B1 - Cric de voiture - Google Patents

Cric de voiture Download PDF

Info

Publication number
EP0611241B1
EP0611241B1 EP19940500019 EP94500019A EP0611241B1 EP 0611241 B1 EP0611241 B1 EP 0611241B1 EP 19940500019 EP19940500019 EP 19940500019 EP 94500019 A EP94500019 A EP 94500019A EP 0611241 B1 EP0611241 B1 EP 0611241B1
Authority
EP
European Patent Office
Prior art keywords
stirrup
jack
column
foot
central
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.)
Expired - Lifetime
Application number
EP19940500019
Other languages
German (de)
English (en)
Other versions
EP0611241A1 (fr
Inventor
Salvador Calafi Moline
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tubsa Automocion SL
Original Assignee
Tubsa Automocion SL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tubsa Automocion SL filed Critical Tubsa Automocion SL
Publication of EP0611241A1 publication Critical patent/EP0611241A1/fr
Application granted granted Critical
Publication of EP0611241B1 publication Critical patent/EP0611241B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 invention relates to a vehicle raising jack, such as a "Y"-form jack, a parallelogram jack, a parallelogram jack with downwardly extending leg, or others.
  • the different types of known jacks provide various advantages which make them especially useful for specific differentiated applications of the jacks, in accordance with the technical requirements of the manufacturers of the corresponding vehicles.
  • the problem raised in general by vehicle-raising jacks in respect of utilization thereof by a normal user without specific knowledge in this field and sometimes not even conversant with correct utilization of a jack to change a damaged wheel on his/her vehicle, consists in ensuring the stability of the whole formed by the jack and the vehicle during the functional operation of the former and also in resisting the mechanical stress required by the vehicle manufacturer and contemplated, amongst other technical specifications, in their corresponding conditions.
  • mechanical jacks for raising vehicles present a support for holding the corresponding lower part of the vehicle to be raised, which support is also denominated stirrup and is in some cases fixed, that is, it is firmly attached to the end of the carrying arm, while in other cases it can rotate with respect to a transversal horizontal axis of the end of said carrying arm, so that it constitutes an axis of rotation for the stirrup, so that the latter can fit better against the bodywork of the vehicle during raising and lowering with the corresponding mechanical jack.
  • the known stirrups present a U- or V-shaped recess or channel, in which channel can be freely housed a lower flange on the corresponding lower part of the vehicle bodywork, reinforced in that zone in order to withstand the mechanical stresses of the jack stirrup support for raising the vehicle.
  • the said flange serves to guide the jack stirrup and prevent any accidental slippage, without the flange resting in the bottom of the stirrup channel.
  • Spanish Utility Model no. ES-U-247.051 discloses a vehicle-raising jack of the "Y" type, like type a) described above, and characterized essentially in that the rotation shaft of the support plate or stirrup rests directly on the lower side of same and is set approximately in a horizontal plane with the formation projecting from the underside of the vehicle, that is, from the lower part of the vehicle bodywork in which said jack support plate or stirrup is placed and fitted.
  • a jack provided with a stirrup articulated to the end of its carrying arm, through a rotation shaft parallel to the tilting axis, can adapt better to the relative movement between the vehicle bodywork and said jack than is the case of a jack with a stirrup which is fixed with respect to its carrying arm.
  • the invention embodies a solution to the problems described above, for the purposes of which the object of the present invention is a vehicle raising jack, which comprises an arm provided at one end with a stirrup as resting point and support for the vehicle and which has the form of a transversal channel with at least one flat front support portion, a column to which the foot of the jack is articulated and a nut into which the jack worm is threaded; characterized in that the stirrup is provided, at the front support portion thereof, with three downwardly directed projections, one of them central and the other two equidistant therefrom, aligned transversally and situated near the channel and at a distance from the respective side edges of said front portion of the stirrup, which projections rest against a transversal rod slightly longer than the gap between the two equidistant projections and fixed at the end of the stirrup carrying arm, the stirrup having attached to it a central plate
  • the vehicle raising jack according to the present invention presents, amongst others, the following advantages: increased stability, reinforcement of mechanically critical parts and increased user ease of initial placement position underneath the bodywork of the vehicle to which it is applied.
  • the jack according to the present invention offers the advantages described above, in addition to others which can be deduced easily from the example of embodiment of said device, which is described in greater detail below in order to facilitate an understanding of the characteristics outlined above, at the same time providing information about various details, the specification being accompanied by drawings which, only by way of example and without limitation of the scope of the present invention, show a practical embodiment of the said vehicle raising jack.
  • a jack of the "Y" type comprising a column 1 (which in the case of the parallelogram-type jack would be an arm) to which is articulated a foot 2 for support of the jack on the ground, to which column is in turn articulated at an intermediate point thereof a raising arm 3 (carrying a stirrup), which articulation is implemented through the corresponding shaft 4 in such a way that the raising arm presents at this articulation two cylindrical recesses 5 (figure 4), which reinforce this part of the arm and provide a large support surface for it at its articulation with the column 1.
  • the column 1 and the raising arm 3 are linked by a worm 6 which traverses and is threaded in a nut 7 (figures 1 and 2), which is this case is made of plastic material, which is provided with two transversal and opposite trunnions 8 which are inserted in the two cylindrical recesses 9 on the column 1 for tilting of the nut and, in consequence, of the worm 6, which cylindrical recesses form a reinforcement for this part of the column and a larger support surface for the nut.
  • a worm 6 which traverses and is threaded in a nut 7 (figures 1 and 2), which is this case is made of plastic material, which is provided with two transversal and opposite trunnions 8 which are inserted in the two cylindrical recesses 9 on the column 1 for tilting of the nut and, in consequence, of the worm 6, which cylindrical recesses form a reinforcement for this part of the column and a larger support surface for the nut.
  • a pin 10 which secures and retains the two vertical wings of the U-profile of the column, which avoids any separation of said wings in the zone of the nut, and therefore avoids any escape of the trunnions 8 of said nut.
  • the worm 6 is borne at its front end by a support which can consist of a bearing 11, as shown in figure 1, or of other suitable means for retaining the front end of the worm in position, while at the same time facilitating its rotation with respect to its transversal support, which in this example consists of a sort of transversal shaft 12 articulated to the two vertical and parallel wings of the raising arm 3 and against which the bearing 11 rests, while on the opposite part there is a sleeve 13 fixed on the worm 6, which retains the arm 3 with respect to the front end of the worm, while at the same time forming a stop for maximum raising of the arm 3 with respect to the column 1.
  • a support which can consist of a bearing 11, as shown in figure 1, or of other suitable means for retaining the front end of the worm in position, while at the same time facilitating its rotation with respect to its transversal support, which in this example consists of a sort of transversal shaft 12 articulated to the two vertical and parallel wings of the raising arm 3 and against which the bearing 11
  • crank 14 is linked in articulation a crank 14, as a means for the user to make the nut rotate in order to have it withdraw or advance, that is, to raise or lower the arm 3 with its stirrup and, in consequence, the bodywork of the vehicle to which it is applied.
  • the crank 14 is articulated inseparably to the rear end of the worm 6, with stops fitted to establish its operating position, although the rotating action of the worm could be implemented by other means, which could even consist in a separatable or disassemblable connexion between the crank or the like and the rear end of the worm.
  • the column 1 is generally "U"-shaped with its free ends bent, in turn, in the form of an inverted-position "U", counterpoising each other, as shown in figure 4.
  • the base of this "U” profile is interrupted at the upper end of the column, being partially prolonged and following the oblique cut of that end, in the form of two wings 15 (figure 3) which prevent the two vertical-profile wings on this part of the column coming together, thus preventing them pressing against the nut 7, avoiding the greater effort which this would involve as a result of a certain braking effect on said nut, and also avoiding eventual deterioration thereof due to that action.
  • the lower end of the column also presents a similar layout, such that the base of its profile is lengthened, bending according to the oblique cut of said lower end and interposing itself between the two wings of the column, thus preventing them coming together, that is, keeping them in their correct positions.
  • the specific profile of the column could clearly be any other with the necessary mechanical strength for its function, including two parallel profiles joined together by cross-members.
  • the raising arm 3 is constituted, in this example, by a "U" profile, although it could be any other of suitable mechanical strength, whose free end is cut off obliquely, so that the base of the profile is lengthened, bending and interposing itself between the two vertical wings of the profile, to which it is welded at its end, the wings forming two upward prolongations 16, to the upper part of which is welded a transversal rod 17 (figures 1 and 5).
  • the stirrup 18 serves to hold and support the vehicle to which the mechanical jack is applied and adopts the overall configuration of a transversal channel, of "U" shape in this example (although it could have a "V” shape or any other suitable shape), in which channel may be fitted freely the lower flange 19 provided for this purpose on the corresponding lower part of the automobile bodywork; and said stirrup is further provided with at least one front portion 20 at which is implemented properly speaking the support of the vehicle body-work, that part being substantially flat for this purpose.
  • the stirrup On said front support portion 20, the stirrup has three downward projections 21, 22 and 23, projection 21 being central and the other two projections 22 and 23 equidistant there from and situated on either side of it, these three projections being aligned transversally and situated close to the channel of the stirrup and at a certain distance from the respective side edges of the above-mentioned front support portion 20, as can be seen in figure 5; and these projections 21, 22 and 23 rest against the rod 17, which is slightly longer than the gap between the two side projections 22 and 23.
  • the stirrup 18 has linked to it, by welding in this example, a plate 24 of narrower width than the internal gap between the two vertical wings of the end of the arm 3 carrying the stirrup 18, so that there exists transversal play which permits the stirrup to move in that direction in relation to its carrying arm 3.
  • the projections 21, 22 and 23 can be constituted by recesses (as shown in figure 5) or by pieces or supplements fixed below the stirrup and set between the lower side of its front support portion 20 and the transversal rod, to form its swivelling support on the latter; and, in any case, such lower projections form a stirrup reinforcement at this point of same.
  • the lower part of the plate 24 is fixed, in this case by welding, to a front, central flange 25 cut out of the stirrup channel and projecting downwards, extending still further below the plate 24 and having an orifice into which is fixed the end of a central spring 26, whose opposite end is attached to the base of the stirrup-carrying arm 3 profile, so that in the inactive position of the stirrup 18, it keeps the latter centred against the rod and in a predetermined position owing to the location of the lower anchorage point of the spring to said arm.
  • the plate 24 is configured as two parallel, opposite parts linked by another intermediate one, forming the configuration of figure 1, similar to the cipher four and forming a lower, central, tubular part situated in front of the front wall of the stirrup 18 channel and underneath its front support portion 20, which tubular part forms a central housing by which said stirrup is articulated freely to the rod 17 with substantial play in several directions, in addition to the transversal travel with respect to the rod 17 described above.
  • the spring 26 has the function of centring the stirrup 18, also situating it initially to facilitate automatic positioning by the user when s/he moves in the mechanical jack and places it under the vehicle bodywork, in addition to the function of eliminating the noise which the stirrup would produce when stowed in the corresponding part of the vehicle.
  • the foot 2 of the mechanical jack is provided with a centred depression 27 (figures 1 and 6) in which there is housed the corresponding lower part of the foot-carrying column 1, which depression 27 is traversed -just above- by a transversal rod 28 fixed to the front part of the foot 2 and with said column 1 articulated to it, with a spring 29 being arranged between the foot 2 and the column 1.
  • the column 1 has two cylindrical recesses 30 which reinforce its two vertical wings at this part of articulation with the foot 2, forming a larger surface area of support of the column 1 on the rod 28.
  • the lower part of the column 1, which in the initial position of the jack is located within the depression 27, may have stops 31 for positioning thereof with respect to the bottom of the depression 27 of the foot 2, while the latter may have pawls 32 for gripping the ground or, in any case, improving the grip of the foot on the ground on which it rests.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Catching Or Destruction (AREA)

Claims (1)

  1. Un cric pour véhicule, qui comprend un bras (3) muni à une extrémité d'un étrier (18) pour retenir et supporter le véhicule, ayant la forme d'un canal transversal avec au moins une partie de support frontal plane, une colonne (1) à laquelle est articulé le socle (2) du cric et un écrou (7) dans lequel est vissée la vis (6) du cric, caractérisé en ce que l'étrier est muni, sur sa partie de support frontale, de trois protubérances (21, 22, 23) dirigées vers le bas, l'une centrale et les deux autres équidistantes de celle-ci, alignées transversalement, disposées à proximité du canal et espacées des bords latéraux respectifs de ladite partie frontale de l'étrier, ces protubérances prenant appui sur une tige transversale (17) légèrement plus longue que l'intervalle entre les deux protubérances équidistantes (22, 23) et fixée à l'extrémité du bras portant l'étrier, l'étrier comportant, fixée à lui, une plaque centrale (24) d'une largeur inférieure à l'espace entre les deux ailes verticales de l'extrémité dudit bras de support, ladite plaque comportant deux plaques parallèles opposées-reliées par une autre plaque intermédiaire, formant un élément central tubulaire inférieur, disposé en face de la paroi frontale du canal de l'étrier et en-dessous de sa partie de support frontale (20), ménageant un logement central au moyen duquel ledit étrier est articulé librement sur la tige, avec un jeu important, le canal de l'étrier ayant un rebord frontal central découpé (25) s'étendant vers le bas, auquel est fixée la partie inférieure de la plaque, se prolongeant de même vers le bas et située sous le logement ; en ce que, à ladite partie inférieure de la plaque est attachée l'extrémité d'un ressort central (26) dont l'extrémité opposée est attachée au bras de support de l'étrier, maintenant celui-ci centré contre la tige et dans une position prédéterminée ; et en ce que le socle (2) présente une dépression centrée (27) dans laquelle est logée la partie inférieure correspondante de la colonne (1) portant le socle, cette dépression étant traversée immédiatement au-dessus par une tige transversale (28) fixée à la partie frontale du socle et à laquelle est articulée ladite colonne, un ressort (29) étant disposé entre le socle et la colonne.
EP19940500019 1993-02-08 1994-02-07 Cric de voiture Expired - Lifetime EP0611241B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9300303U ES1023878Y (es) 1993-02-08 1993-02-08 Dispositivo estabilizador y de refuerzo para gatos elevadores de vehiculos.
ES9300303U 1993-02-08

Publications (2)

Publication Number Publication Date
EP0611241A1 EP0611241A1 (fr) 1994-08-17
EP0611241B1 true EP0611241B1 (fr) 1998-05-06

Family

ID=8280805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940500019 Expired - Lifetime EP0611241B1 (fr) 1993-02-08 1994-02-07 Cric de voiture

Country Status (3)

Country Link
EP (1) EP0611241B1 (fr)
DE (1) DE69409993T2 (fr)
ES (2) ES1023878Y (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7414229U (de) * 1974-07-25 Allendorfer Fabrik Fuer Stahlverarbeitung Panne H Kg Wagenheber
DE8706754U1 (de) * 1987-05-12 1987-08-06 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
ES1013831Y (es) * 1990-04-10 1991-06-16 Salvador Rovira Xavier Gato mecanico mejorado para vehiculos automoviles.
ES1014898Y (es) * 1990-07-30 1991-11-16 Salvador Rovira Xavier Gato mecanico perfeccionado para vehiculos automoviles.

Also Published As

Publication number Publication date
ES1023878U (es) 1993-08-01
ES2116564T3 (es) 1998-07-16
DE69409993D1 (de) 1998-06-10
DE69409993T2 (de) 1998-09-10
EP0611241A1 (fr) 1994-08-17
ES1023878Y (es) 1994-05-01

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