EP0683130A1 - Tête de cric pour véhicule - Google Patents

Tête de cric pour véhicule Download PDF

Info

Publication number
EP0683130A1
EP0683130A1 EP95500071A EP95500071A EP0683130A1 EP 0683130 A1 EP0683130 A1 EP 0683130A1 EP 95500071 A EP95500071 A EP 95500071A EP 95500071 A EP95500071 A EP 95500071A EP 0683130 A1 EP0683130 A1 EP 0683130A1
Authority
EP
European Patent Office
Prior art keywords
jaw
arm
jack
vehicle body
lower edge
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
Application number
EP95500071A
Other languages
German (de)
English (en)
Other versions
EP0683130B1 (fr
Inventor
José Antonio Palacio
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.)
Batz SCL
Original Assignee
Batz SCL
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 Batz SCL filed Critical Batz SCL
Publication of EP0683130A1 publication Critical patent/EP0683130A1/fr
Application granted granted Critical
Publication of EP0683130B1 publication Critical patent/EP0683130B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

  • This invention relates to a jaw for jacks used to raise vehicles, for instance of the type known as Y-jacks, which are made up of two support members or arms.
  • One arm is provided with a foot at one end for siting on the ground and connected to a screw spindle at the other end, while the other arm pivots on the first, receives the end of the screw spindle in its central section and is equipped with a jaw for the lower edge of the vehicle body.
  • the end of the screw spindle that protrudes from the first support member or arm is connected to a winding handle, which operates the whole unit when it is turned in one direction or the other, so that the end of the second arm is raised or lowered, together with the edge of the vehicle body housed in the jaw.
  • the edge of the vehicle body is equipped with slots or holes, into which a fixed lug on the jack is housed in order to prevent the top of the jack from moving when the vehicle is being raised.
  • This lug is usually inserted into the said slot in the vehicle body prior to raising, thus obliging the used to perform this operation, which is an inconvenience.
  • these jaws that turn on the support member or arm of the jack, there are some which are metallic and usually have two pairs of specially-shaped lugs at their longitudinal ends, which make contact, when the jack is folded, with the edges of the U-shaped wings of the other support member, so that they situate the jaw in the exact position for it to receive the edge of the vehicle body when the jack begins its working movement.
  • these pairs of lugs are usually made with a special shape, making it necessary to perform special machining operations in order to make the jaw.
  • jaws which turn on the support member on which they are included, so as to be suitably positioned in relation to the vehicle body at the start of movements.
  • the turning of these jaws is not carried out on a longitudinal axis, but on one end of the jaw itself, so that all the jaw is raised over the said end, becoming separated from the jack support member in order to adopt the initial position required.
  • jaws of this type use a complicated mechanism housed inside the support member or arm itself, based on a rod fixed to the arm, surrounded by a helicoidal spring which operates on one end of the jaw.
  • Another object of this invention is to provide a jaw, made of plastic material, which is easily positioned in the corresponding arm and is limited in its turning.
  • Another object of this invention is to provide a jaw for jacks which turns on the arm, either on its own longitudinal axis or on one end of the jaw itself, being raised in relation to the arm, so that in a very simple and economical way it is always presented in a suitable position to receive the lower edge of the vehicle body.
  • this invention presents a generally cylindrically-shaped part, made of plastic material, which is provided with a U-shaped longitudinal recess to receive the lower edge of the vehicle body.
  • One of the edges or wings of this part is not very thick, so that it can flex to allow the jaw to be inserted into the arm of the jack.
  • the other edge or wing is thicker and is suitably reinforced with projections.
  • the part includes two transverse annular slots cut into its exterior, in which the thicknesses of the two wings of the jack support member or arm are received, so that the jaw can turn during the ascending and descending movements of the jack.
  • the frontal longitudinal ends of the part are each provided with pairs or protruding lugs, specially made so that when the jack is folded, these lugs make contact with the edges of the wings of the other arm of the jack, making the jaw turn towards a position, always the same, which corresponds to the position suitable for the lower edge of the vehicle body, without any type of prior external operation, to become housed in the recess in the part.
  • the jaw turns on the arm on which it is arranged, so that when the working operations of the jack have finished, it is more than probable that the jaw is in a position that does not correspond with that desired in order to receive the lower edge of the vehicle body. This would make it necessary to turn the jaw in order to situate it in position.
  • the jaw is also provided with an upwardly open central portion arranged between its turning slots. This central portion is established by connecting the ends of the jaw by means of a rib arranged on one side, a shaft on the other side and a base, with all these being longitudinal and essentially parallel.
  • the rib and the shaft are located at mid-height of the jaw and, logically, are separated from each other a distance equivalent to the width of the prolongation of the recess in the jaw.
  • This U-shaped part therefore, remains clasped to the shaft so that its shorter arm is supported on the rib in the central base of the jaw, whereas its longer arm manages to just reach the theoretical central gap corresponding to the longitudinal recess.
  • the U-shaped part is capable of turning on the central shaft to which it is clasped, as will be explained later, and it is provided with two approximately triangular-shaped ledges.
  • One of these ledges is made in the interior of the longer arm, and the other in the exterior of the shorter arm, just at the start of the curve in the base of the part.
  • These two triangular ledges are narrower than the width of the part.
  • the ledge on the shorter arm rests on the rib from the base and the one on the longer arm is clip-housed into a gap in the central shaft in order to prevent it from falling.
  • This gap takes up a part of the said shaft and occupies an angular space greater than 90 degrees in the shaft.
  • the turning in the anticlockwise direction is limited by the angle of the recess in the central shaft, given that the triangular ledge on the longer arm of the U-shaped part moves in the said recess, as described previously.
  • the turning in question is, as mentioned previously, limited by the angular recess in the centre shaft, but is of sufficient importance to allow the longer arm of the U-shaped part to become inserted into the slot and even to pass through it thanks to the central hollow that the jaw is provided with.
  • a longitudinal part is presented, also made of plastic material, which becomes positioned in recesses and projections made in the two opposite sides of the support member or arm of the jack.
  • the recesses and projections in the arms will be responsible for receiving the jaw when the jack is being used, and the projections will in turn be used as support areas to allow the jaw to perform its turning.
  • projections and recesses will usually be rounded, and the projections might even be provided with internal necks, which facilitate the clipping of the jaw and its later turning.
  • the jaw consists of a longitudinal part, with a flat upper part and with two rounded ends made on its lower side for fitting together with the projections on the arms, and another part adjacent to it, with an upwardly open U-shape, which occupies the whole length of the jaw, by whose exterior this jaw is supported on the recesses in the arms of the jack.
  • the jaw is provided with transversal ribs which ensure that the assembly is strong enough, for instance one central and two side ribs.
  • the two rounded lower ends of the jaw are situated a short distance from two downward lugs, responsible for maintaining the connection between the jaw and the arm. These lugs are also provided with projections directed towards the said rounded ends.
  • the separation between the recesses and the lugs will correspond to the thickness of the arms of the jack, so as to take in these arms. If the projections on the arms of the jack are provided with facing necks, the projections on the lugs will be taken in below these said necks. On the contrary, if the projections on the arms of the jack are flat and are provided with facing recesses, the projections on the lugs will become housed in these said recesses. In any case, these particulars will be explained and appreciated more clearly later, in connection with the corresponding drawings.
  • the jaw is arranged on the wings of the support member or arm of the jack, so that it can turn on the said wings.
  • the invention contemplates the provision of a generally U-shaped spring, whose base is flat and whose wings are adapted to the cross-section of the jaw.
  • the spring is housed in the interior of the jaw, so that the flat base goes outside the front end of the arm of the jack and the wings of the jack conform to the shape, not only of the jaw but also of the recesses and projections on the wings of the arm of the jack, being received also in the interior of the jaw and travelling along the exterior of the wings on the arm of the jack.
  • the recesses in the jaw that receive the projections on the arm are situated a certain distance from the sideends of the jaw, so that spaces are created between the said recesses and said ends to allow the wings of the spring to move. These spaces are adapted to the shape of the said wings in order to keep them controlled, a task which is helped by a series of housings made below the lower outer portion of the seating area (sill) of the lower edge of the vehicle body.
  • the action of the spring is such that it acts to force the jaw to move away from the edge of the wings of the arm of the jack, turning on the projections of the said arm, with this position corresponding to the precise specific position that provides the direct fitting of the lower edge of the vehicle body into the jaw.
  • a vehicle jack of the kind known as Y-jacks with a first support member or arm (1) that receives a support foot (5) on the ground and has a screw spindle (3) running through it and turning at one end inside a suitable element, when it is operated by means of the winding handle (4).
  • the other support member or arm (2) receives the end of the screw spindle and has a pivoting axis on the first support member or arm (1), so that its free end rises or falls according to the turning direction of the winding handle (4) that operates the screw spindle (3).
  • the said free end includes a jaw (9) which is responsible for receiving the lower edge of the vehicle body.
  • the jaw according to the invention (8) is established with a generally circular shape, with a longitudinal recess (6) responsible for receiving the lower edge of the vehicle body.
  • the said recess is separated into two ends, due to the central gap (14), which can be appreciated in Figure 3.
  • the recess (6) determines two edges (7) and (10).
  • the former edges (7) are thinner in order to facilitate the insertion of the jaw in the two wings of the corresponding arm of the jack by means of flexing of these said edges, whereas the latter edges (10) are thicker and are reinforced by the projections made on them.
  • the jaw (8) has annular slots (15) close to its ends, thick enough to allow the wings on the arm (2) of the jack to fit into them, and the projections on the edges (10) are made in these slots.
  • the free ends of the jaw include the projecting lugs (12, 13), responsible for suitably positioning the jaw in the folded position of the jack, as will be pointed out later in connection with Figure 9.
  • Figure 4 shows how the edge (24) makes contact with the shorter arm of the part (20) in such a way that this part turns on the shaft (23), making the rib (11) flex and how, thanks to this turning movement, the longer arm of the part (20) becomes housed in the slot (25) in the lower edge of the vehicle body (24).
  • the part (20) illustrated in Figures 6 and 7 is provided with two triangular ledges, one of which (18) is on the longer arm (16), while the other (19) is on the shorter one (17).
  • the ledge (18) becomes housed by clicking into the hollow (22) in the shaft (23) (Fig. 8), so that it does not come out from its working position, while the ledge (19) rests on the rib (11) from the base, thus increasing the support surface of the wing (17) on the said rib.
  • the corresponding arms (2) of the jack are conditioned as shown in Figure 10, by providing the said arms with recesses and projections (26) in the corresponding sides in order to receive the jaw in the usual way.
  • a ledge or flange (32) is shown on the interior of the arms (2), in which we wish to point out on this matter, as will be explained more fully later, that the ledges or flanges (32) need not necessarily exist, being replaced by recesses or gaps made in the projections on the said arms.
  • the jaw (28) is provided with portions (30) close to each of its ends, which are rounded so as to adapt themselves to the profile of the projections on the arms, in such a way that the jaw turns in these said projections. Adjacent to this portion, the jaw (28) has another portion (29) open at the top, which, by its outer edge, adapts to the recesses (26) in the arms.
  • the jaw (28) is provided with transversal rims, not numbered, in order to reinforce its structure.
  • Figure 12 illustrates how the arm (2) of the jack receives the jaw (28), with the projections (31) arranged adjacent to it, so that when the thickness of the arm (2) enters, these projections (31) are taken in either below the ledges (32) or in recesses cut into the arm (2).
  • the jaw (28) can turn on the two wings on the arm (2) of the jack.
  • the invention anticipates the addition of a spring (27), housed inside the jaw, as shown in Figure 13, and which, in turn, clasps the outer front of the arm (2) and its sides, round their exterior part.
  • the said spring (27) is also shown in Figure 10.
  • the said spring (27) is received in the interior of the jaw (28) in such a way that it is controlled between the said jaw and the outer sides of the wings on the arm (2), passing through positions (27') and (27'') in the jaw, with a resulting effect on the end position (27''), which forces the jaw to move upwards, as shown in Figure 14, when the jaw is completely free as regards the lower edge of the vehicle body.
  • the spring (27) is controlled in the interior of the jaw (28), as illustrated in Figures 11, 12 and 13, with its end (27'') passing below the opening in order to achieve its perfect emplacement inside the jaw.
  • the spring performs an action which is such that the jaw (28) becomes separated from the arm (2) when it is free of contact with the lower edge of the vehicle body, with the normal position for its being fitted to the said lower edge being shown here.

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)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Clamps And Clips (AREA)
EP19950500071 1994-05-11 1995-05-11 Tête de cric pour véhicule Expired - Lifetime EP0683130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9401004A ES2115446B1 (es) 1994-05-11 1994-05-11 Mordaza para gato.
ES9401004 1994-05-11

Publications (2)

Publication Number Publication Date
EP0683130A1 true EP0683130A1 (fr) 1995-11-22
EP0683130B1 EP0683130B1 (fr) 1999-12-01

Family

ID=8286191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950500071 Expired - Lifetime EP0683130B1 (fr) 1994-05-11 1995-05-11 Tête de cric pour véhicule

Country Status (4)

Country Link
EP (1) EP0683130B1 (fr)
BR (1) BR9502018A (fr)
DE (1) DE69513562T2 (fr)
ES (2) ES2115446B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832844A1 (fr) * 1996-09-27 1998-04-01 Batz, S. Coop. Ltda. Cric de véhicule
ES2129311A1 (es) * 1996-01-22 1999-06-01 Batz S Coop Ltada Gato para vehiculos.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902579A1 (de) * 1979-01-24 1980-07-31 Bilstein August Fa Wagenheber
DE8706754U1 (de) * 1987-05-12 1987-08-06 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
GB2218400A (en) * 1988-05-14 1989-11-15 Metallifacture Ltd Vehicle jack
EP0451643A2 (fr) * 1990-04-10 1991-10-16 Xavier Salvador Rovira Vérin mécanique amélioré pour des véhicules automobiles
EP0565801A1 (fr) * 1992-04-14 1993-10-20 E.P.I., EUROPEENNE DE PARTICIPATIONS INDUSTRIELLE, Société Anonyme Cric pour véhicules

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902579A1 (de) * 1979-01-24 1980-07-31 Bilstein August Fa Wagenheber
DE8706754U1 (de) * 1987-05-12 1987-08-06 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
GB2218400A (en) * 1988-05-14 1989-11-15 Metallifacture Ltd Vehicle jack
EP0451643A2 (fr) * 1990-04-10 1991-10-16 Xavier Salvador Rovira Vérin mécanique amélioré pour des véhicules automobiles
EP0565801A1 (fr) * 1992-04-14 1993-10-20 E.P.I., EUROPEENNE DE PARTICIPATIONS INDUSTRIELLE, Société Anonyme Cric pour véhicules

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2129311A1 (es) * 1996-01-22 1999-06-01 Batz S Coop Ltada Gato para vehiculos.
EP0832844A1 (fr) * 1996-09-27 1998-04-01 Batz, S. Coop. Ltda. Cric de véhicule
ES2130961A1 (es) * 1996-09-27 1999-07-01 Batz S Coop Ltda Gato para vehiculos.
US6068239A (en) * 1996-09-27 2000-05-30 Batz, S. Coop. Ltda. Vehicle jack

Also Published As

Publication number Publication date
DE69513562D1 (de) 2000-01-05
ES2141908T3 (es) 2000-04-01
ES2115446A1 (es) 1998-06-16
ES2115446B1 (es) 1999-03-01
BR9502018A (pt) 1995-12-12
DE69513562T2 (de) 2000-07-27
EP0683130B1 (fr) 1999-12-01

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