EP0451643A2 - Kraftfahrzeugheber - Google Patents

Kraftfahrzeugheber Download PDF

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Publication number
EP0451643A2
EP0451643A2 EP91105039A EP91105039A EP0451643A2 EP 0451643 A2 EP0451643 A2 EP 0451643A2 EP 91105039 A EP91105039 A EP 91105039A EP 91105039 A EP91105039 A EP 91105039A EP 0451643 A2 EP0451643 A2 EP 0451643A2
Authority
EP
European Patent Office
Prior art keywords
stirrup
arm
extension
parallelogram
articulated
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.)
Ceased
Application number
EP91105039A
Other languages
English (en)
French (fr)
Other versions
EP0451643A3 (en
Inventor
Xavier Salvador Rovira
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0451643A2 publication Critical patent/EP0451643A2/de
Publication of EP0451643A3 publication Critical patent/EP0451643A3/fr
Ceased legal-status Critical Current

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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 object of this Utility Model is 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 the function for 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 situated in a diagonal, which is 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 - As a crank or the like - and the front end of said spindle is screwed to a nut articulated at the front apex of the parallelogram, while the opposite end of the spindle passes through a crosspiece, which is articulated at the opposite rear apex of said parallelogram.
  • the rear end of the spindle is terminated in a posterior expansion, resting 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 vertex 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 placing at the front part and which protrudes from the spindle a bearing to facilitate pivoting of the spindle relative to said cross member, as well as a stop at the opposite internal part of said front vertex of the parallelogram, to retain said vertex, and, at the same time, to limit the maximum height of the jack.
  • a spring to maintain the leg of the jack in the position of maximum tilt back and down relative to the foot, to facilitate the initial positioning of the jack by the user and there are, finally, stops as regards said articulation between the leg of the jack and its foot, corresponding respectively to its maximum and minimum inclinations relative to said foot.
  • 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 articulation axes or by "U” cutting profiles, connected by respective articulation axes.
  • the applicant has proposed a mechanical jack object of Utility Model N. 8903891 which, being of the type described above, is characterized in that the upper front arm of the parallelogram has a smooth elastic pin, preferably , by a lower appendage passing through an orifice of said arm and in which it remains retained by a terminal magnification, at its part of the front end and near the front vertex of the parallelogram, in correspondence with a tubular part of the stirrup freely articulated in an axis of extension of the rear upper arm of the parallelogram, so that said part of the stirrup bears against the ankle when the jack is folded; and in that the upper part of the rear transverse branch of the stirrup profile, close to and forming part of its mouth, has an area in a backward inclined plane, for its initial abutment against the corresponding edge downwards the lower part of the bodywork of the motor vehicle.
  • Said mechanical actuator provides, in particular, the advantages of maximum adaptability of the caliper of the actuator to the corresponding lower part of the body of the vehicle to which it is applied, by the high level of freedom with regard to the articulation of the caliper to the rear upper arm of the jack, with the corresponding relatively large clearances between the corresponding part of the caliper and the axis which the extension of said rear upper arm has, as well as between said extension and the sides of the caliper, in addition to determining a positioning initial automatic under the bodywork by the stop which the stirrup has and which is established against the downward rim which has said lower part of the bodywork.
  • the applicant has designed improvements to said mechanical cylinder, with regard to the automatic centering of the caliper and its correct automatic positioning, 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 said extension of the rear upper arm has, by projecting from the interior face of each of its two parallel wings, elastic means opposite and directed towards the mean vertical plane of said arm, each of them s 'pressing 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; and in that the stirrup is maintained, by at least one spring and with respect to the extension of the arm to which it is articulated, in an intermediate position in relation to those determined by the two stops of the end of said extension, as regards its relative pivoting.
  • This improved mechanical cylinder for motor vehicles provides, in particular, the advantages of automatic centering of the caliper in its initial position and despite its free articulation, by obtaining an optimum balance of the cylinder at the start of the elevation of the corresponding vehicle and, therefore, by ensuring the stability of the assembly formed by the vehicle and the actuator both during the raising and lowering of the vehicle, and at the end of its elevation to change the corresponding wheel, as well as the advantages of ensuring the correct initial positioning of the stirrup to obtain that it is in a suitable position at the end of its elevation, regardless of what will be the height relative to the ground of the vehicle body to be raised and thus eliminate any possible positioning of the caliper when the user locates the jack under the body to raise it.
  • 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 the scope of the present invention, there is shown 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 without the spindle (with its means of screwing and support and guide) or the crank; in Figure 2 there is shown said cylinder which begins to unfold and arranged in an appropriate position below the vehicle body (which is shown in dotted lines, only a lower part thereof with its rim); Figure 3 corresponds to a section through AA of Figure 2 and shows a detail of the free joint of the stirrup; Figure 4 shows said cylinder in an elevated position thereof, that is to say, in an elevated position of the vehicle to which it is applied; in Figures 5 and 6 is shown the stirrup in side elevation and in plan, respectively; in Figure 7 is detailed the section BB of Figure 5; Figure 8 corresponds to a front elevation before the stirrup; and Figures 9 and 10 correspond respectively to the sections according to CC and DD of figure 8.
  • the improved mechanical cylinder for motor vehicles has four arms (1), (2), (3) and (4) (see in particular FIG. 4) 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 4, 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, to raise or lower the caliper of the jack and, consequently, the body of the motor vehicle to which it has been 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 do 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 relative to the front apex 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 actuator has, near the upper top thereof and normally in an extension of the rear upper arm (1), a stirrup (8) for the support and support of the motor vehicle to which it is applied, said stirrup generally being, such as the one shown, articulated at the end of said extension of the arm (1) and also being conventional, the shaped stirrup "U” or "V", by determining a channel in which the lower edge (9) which has the corresponding lower part of the vehicle body, which is reinforced in this zone to resist the mechanical stresses, can be freely accommodated 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 4.
  • 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 jack is rising or, if necessary, going down, the stirrup (8) has a relatively high level of freedom, because it can move, although with relatively small but sufficient displacements, in any direction, thanks as much to the play existing between its tubular part (11) and the axis (12) arranged in the extension of the arm (1), as to the fact that the two parts of the tip or wings (13) also have a transverse play with respect to the extension of said arm (1) (see FIG. 3), because said two wings (13) are separated from each other at a greater distance than the proper width of said extension of the arm (1), to a suitable extent.
  • 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 as well of the jack relative to the body as possible variations of the geometry of the latter in the support part (by alterations in its manufacture or by possible blows received by the body) 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 forming 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 actuation of its crank (6) shown in Figure 1) -, said zone (14) of the stirrup (8) cooperates in guiding said stirrup along the rim (9), which is correctly directed 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, we also obtain the rise of the bodywork to the desired position, which normally corresponds to that shown in FIG. 4.
  • the extension of the rear upper arm (1) has two elastic means, in this case constituted by elastic blades (15), united by rivets, although they could be connected by other conventional means on each of the two inner faces of the two parallel wings of said extension (see FIG. 3), these two elastic blades projecting from the respective inner face of said parallel wings of the extension and being directed towards the mean vertical plane of said arm (1), each of the two elastic blades mentioned (15) pressing against the corresponding longitudinal edge of the tubular part (11) of the stirrup (8), which is clearly appreciated in Figure 3; and said support being preferably made by means of a deviated end of each blade (15), which is arranged substantially parallel to said corresponding edge of the tubular part (11).
  • the stirrup (8) is elastically connected by at least one spring (16) to the arm (1), and for this said spring is fixed by one end to the orifice (17) - by means, for example, of a hook at the end of the spring - and at its other end to an orifice (18) (see Figures 1, 2, 4, 5 and 6) of the caliper (8), so that said spring holds the caliper, when the latter does not have the bodywork 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.
  • the stirrup (8) may have an intermediate channel or rib (19) ( Figures 3, 5, 6, 7 and 9) which, at the same time as it determines a reinforcing effect in this part of the stirrup, establishes theoretically punctual support on the axis (12) ( Figure 3), facilitating the free oscillation of the stirrup relative to the extension of the arm (1).

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)
EP19910105039 1990-04-10 1991-03-28 Vehicle lifting jack Ceased EP0451643A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9001330U 1990-04-10
ES9001330U ES1013831Y (es) 1990-04-10 1990-04-10 Gato mecanico mejorado para vehiculos automoviles.

Publications (2)

Publication Number Publication Date
EP0451643A2 true EP0451643A2 (de) 1991-10-16
EP0451643A3 EP0451643A3 (en) 1992-01-08

Family

ID=8267272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910105039 Ceased EP0451643A3 (en) 1990-04-10 1991-03-28 Vehicle lifting jack

Country Status (3)

Country Link
EP (1) EP0451643A3 (de)
ES (1) ES1013831Y (de)
PT (1) PT8273Y (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516314A2 (de) * 1991-05-29 1992-12-02 Metallifacture Limited Wagenheber
DE4127739A1 (de) * 1991-08-22 1993-02-25 Bilstein August Gmbh Co Kg Wagenheber
EP0611241A1 (de) * 1993-02-08 1994-08-17 Tub S.A. Stabilisierungs- und Verstärkungsvorrichtung für Wagenheber
EP0622329A1 (de) * 1993-03-30 1994-11-02 Tub S.A. Automatische Stabilisierungs- und Verstärkungsvorrichtung für Wagenheber
EP0683130A1 (de) * 1994-05-11 1995-11-22 Batz, S. Coop. Ltda. Lastkopf für Wagenheber
EP0858967A1 (de) * 1997-02-18 1998-08-19 Adwest Bowden France S.A. Wagenheber vom Y-Typ
EP1002757A1 (de) * 1998-11-20 2000-05-24 E.A. Storz Gmbh & Co. Kg Lastträger für einen Wagenheber
WO2003084857A1 (de) * 2002-04-09 2003-10-16 Thyssenkrupp Bilstein Gmbh Anbindung einer schwenkbaren tragplatte
CN108297207A (zh) * 2017-12-12 2018-07-20 芜湖市夏氏世家家具有限公司 一种方形木板自动包边装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388004A (en) * 1944-05-17 1945-10-30 John C Mclaughlin Lifting jack
FR1075818A (fr) * 1953-04-13 1954-10-20 Manuf D Outil Pour Garages Wil Dispositif-support permettant l'orientation à poste fixe d'une roue orientable de véhicule
DE7414229U (de) * 1974-07-25 Allendorfer Fabrik Fuer Stahlverarbeitung Panne H Kg Wagenheber
JPS529260A (en) * 1975-07-12 1977-01-24 Nobuyuki Kamaga Sliding jack
DE3036584A1 (de) * 1980-09-27 1982-05-13 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Wagenheber
DE8702290U1 (de) * 1987-02-14 1987-07-16 August Bilstein Gmbh & Co Kg, 58256 Ennepetal Wagenheber

Patent Citations (6)

* 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
US2388004A (en) * 1944-05-17 1945-10-30 John C Mclaughlin Lifting jack
FR1075818A (fr) * 1953-04-13 1954-10-20 Manuf D Outil Pour Garages Wil Dispositif-support permettant l'orientation à poste fixe d'une roue orientable de véhicule
JPS529260A (en) * 1975-07-12 1977-01-24 Nobuyuki Kamaga Sliding jack
DE3036584A1 (de) * 1980-09-27 1982-05-13 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Wagenheber
DE8702290U1 (de) * 1987-02-14 1987-07-16 August Bilstein Gmbh & Co Kg, 58256 Ennepetal Wagenheber

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 60, 10 Juin 1977; & JP-A-52 009 260 (NOBUYUKI KAMAGA) 24 Janvier 1977 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516314A2 (de) * 1991-05-29 1992-12-02 Metallifacture Limited Wagenheber
EP0516314A3 (de) * 1991-05-29 1994-02-23 Metallifacture Ltd
DE4127739A1 (de) * 1991-08-22 1993-02-25 Bilstein August Gmbh Co Kg Wagenheber
EP0529355A1 (de) * 1991-08-22 1993-03-03 AUGUST BILSTEIN GMBH & CO. KG Wagenheber
EP0611241A1 (de) * 1993-02-08 1994-08-17 Tub S.A. Stabilisierungs- und Verstärkungsvorrichtung für Wagenheber
EP0622329A1 (de) * 1993-03-30 1994-11-02 Tub S.A. Automatische Stabilisierungs- und Verstärkungsvorrichtung für Wagenheber
EP0683130A1 (de) * 1994-05-11 1995-11-22 Batz, S. Coop. Ltda. Lastkopf für Wagenheber
EP0858967A1 (de) * 1997-02-18 1998-08-19 Adwest Bowden France S.A. Wagenheber vom Y-Typ
FR2759688A1 (fr) * 1997-02-18 1998-08-21 Adwest Bowden France Sa Cric de voiture de type y
EP1002757A1 (de) * 1998-11-20 2000-05-24 E.A. Storz Gmbh & Co. Kg Lastträger für einen Wagenheber
EP1002758A1 (de) * 1998-11-20 2000-05-24 E.A. Storz Gmbh & Co. Kg Lastträger für einen Wagenheber
WO2003084857A1 (de) * 2002-04-09 2003-10-16 Thyssenkrupp Bilstein Gmbh Anbindung einer schwenkbaren tragplatte
CN108297207A (zh) * 2017-12-12 2018-07-20 芜湖市夏氏世家家具有限公司 一种方形木板自动包边装置

Also Published As

Publication number Publication date
ES1013831Y (es) 1991-06-16
PT8273U (pt) 1991-10-31
EP0451643A3 (en) 1992-01-08
PT8273Y (pt) 1993-11-30
ES1013831U (es) 1991-01-16

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