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EP0697365A1 - Sicherheitswagenheber - Google Patents

Sicherheitswagenheber Download PDF

Info

Publication number
EP0697365A1
EP0697365A1 EP95500110A EP95500110A EP0697365A1 EP 0697365 A1 EP0697365 A1 EP 0697365A1 EP 95500110 A EP95500110 A EP 95500110A EP 95500110 A EP95500110 A EP 95500110A EP 0697365 A1 EP0697365 A1 EP 0697365A1
Authority
EP
European Patent Office
Prior art keywords
screw spindle
support member
jaw
housing
jack
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
EP95500110A
Other languages
English (en)
French (fr)
Other versions
EP0697365B1 (de
Inventor
Jose 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 EP0697365A1 publication Critical patent/EP0697365A1/de
Application granted granted Critical
Publication of EP0697365B1 publication Critical patent/EP0697365B1/de
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 vehicle safety jack, of the type known as Y-jacks, with a first support member that includes one end in the form of a foot in order to rest the jack on the ground and the other end that receives a wharve, and another, second support member with one end that pivots on the first support member and is finished at its other end with a jaw or clamp in which the lower edge of the car body is received.
  • a threaded screw spindle passes through the wharve and the jaw and has a winding handle connected to the end farthest from the wharve, so that when the winding handle is turned in one direction, the second support member is raised with the jaw and the vehicle, and when the winding handle is turned in the other direction, the second support member or arm and the vehicle are lowered.
  • the jaw on the second support member is kept fixed against the free end of the screw spindle, so that the screw spindle turns inside the wharve, thus moving the said wharve and the said screw spindle towards or away from each other and causing the second support member to be raised or lowered.
  • the solution is also known which consists of machining the interior of the housing for the screw spindle in the jaw, thus providing an internal ledge in the hole in the jaw, on which a rebate or recess in the screw spindle rests.
  • the free end of the screw spindle is connected by means of two washers and a central ball bearing cage, which are secured to the said end by being riveted to it.
  • the support members or arms are usually made up of parts with a U-shaped cross-section, so that when the jack is raised, the end of the second support member, and more specifically the thickness of the end of this second support member, impinges on and affects the rounded internal corners of the first support member in such a way that, when considerably heavy loads have to be raised, the end of the second support member buckle or twist at these said corners, meaning that the jack is made unusable.
  • Another object of this invention is to provide a jack with a sturdy or robust stop for the support member that holds the screw spindle at its maximum elevation, so that it preserves the integrity of the assembly and ensures the absence of buckled areas when overloads exist.
  • the invention claims a jaw, made of plastic, which has a totally flat axial perforation in which the screw spindle is housed without any kind of impediment.
  • a housing is made of a greater diameter than the diameter of the hole for the screw spindle, with this housing being connected on one side with the said hole and on the other side with the exterior of the jaw through a hole.
  • the housing has two internal walls, one towards the screw spindle input and the other towards its output.
  • the screw spindle is housed freely in the jaw, as already pointed out, and in the interior of the housing receives the ball bearing cage and the two washers, which are controlled by the internal side walls of the said housing.
  • the end of the screw spindle is riveted to the outer of the two washers, thus securing the whole assembly irremovably.
  • the screw spindle remains free and completely unhindered inside the jaw and the jaw remains perfectly controlled by means of the inclusion of the washers and the ball bearing cage inside the housing in the jaw.
  • the invention claims the realization of a set of lugs, one in each of the facing wings or sides of the first support member of the jack, in a position that corresponds to that of the maximum elevation of the second support member of the jack, usually close to the position of the wharve in the first support member.
  • the two lugs are formed facing each other and as the result of windows or cut-outs made in the said wings, protruding towards the interior of the support member, usually perpendicular to the said wings.
  • Figure 1 is an elevation of the jack that includes the invention.
  • Figure 2 is an external side elevation of the jaw in accordance with the invention.
  • Figure 3 is a longitudinal cross-sectional view of a conventional jaw with the screw spindle assembled in its interior.
  • Figure 4 is a longitudinal cross-sectional view of the jaw with the screw spindle, in accordance with the invention.
  • Figure 5 is a double cross-sectional view of the two support members or arms of the jack, which illustrates, on the one hand, the problem that arises in the position of maximum elevation and, on the other hand, the solution claimed by the invention.
  • a jack of the type known as Y-jacks provided with a first support member (1) with a support foot for resting on the ground and which at its upper end receives the wharve (6) which has the threaded screw spindle (3) passing through it. Seated on this first support member (1) is the pivoting edge (10) of the second support member, whose other end includes the jaw (5) which, in turn has the screw spindle (3) passing through it.
  • the jaw (5) can be seen, with its end (11), into which the screw spindle is inserted, and the forward housing (7).
  • FIG. 3 shows the already known solution for making the jaw (12) irremovable.
  • the interior of this jaw has been machined, as shown, giving rise to the ledge (13) on which the screw spindle (3) rests.
  • the end of the screw spindle and the neck (17) receive the two washers (14, 16) with the ball bearing cage (15) between them, which are secured by the end of the screw spindle (8) being properly riveted.
  • the solution claimed by the invention shows how the screw spindle passes through the straight continuous interior of the jaw (5), and in the interior of the housing are situated the washers (14, 16) with the ball bearing cage (15), controlled between the side walls of the said housing (7). Riveting of the end (8) of the screw spindle is carried out through the outer hole, as illustrated, with which the jaw (5) becomes perfectly irremovable.
  • Figure 5 shows the problem that arises in jacks when they are subjected to overloading in the maximum elevation position of the second support member, according to which the end edges of the support member (2) impinge on the rounded corners (1) of the first support member (1), leading to their becoming strained and permanently deformed, as at (20).
  • the right part represents the solution claimed in order to prevent this disadvantage, and also illustrated in Figure 1.
  • the lugs (9) in the wings or sides of the first support member (1) are made, preferable from the support member itself, by the machining that produces the windows or cut-outs (18).
  • the lugs are established facing and aligned with each other, as shown, so that their edges or thicknesses make contact with the edges (10) of the support member (2), with sufficient strength at the meeting point to be able to resist overloads.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Dowels (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Clamps And Clips (AREA)
EP19950500110 1994-08-04 1995-07-25 Sicherheitswagenheber Expired - Lifetime EP0697365B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9401754 1994-08-04
ES9401754A ES2121490B1 (es) 1994-08-04 1994-08-04 Gato elevador de seguridad.

Publications (2)

Publication Number Publication Date
EP0697365A1 true EP0697365A1 (de) 1996-02-21
EP0697365B1 EP0697365B1 (de) 2001-03-14

Family

ID=8287199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950500110 Expired - Lifetime EP0697365B1 (de) 1994-08-04 1995-07-25 Sicherheitswagenheber

Country Status (4)

Country Link
EP (1) EP0697365B1 (de)
BR (1) BR9503538A (de)
DE (1) DE69520316D1 (de)
ES (1) ES2121490B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832844A1 (de) * 1996-09-27 1998-04-01 Batz, S. Coop. Ltda. Wagenheber

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2273752A1 (fr) * 1974-06-07 1976-01-02 Bilstein August Cric pour vehicules automobiles
GB2136393A (en) * 1983-02-26 1984-09-19 Metallifacture Ltd Vehicle jack
EP0340551A1 (de) * 1988-05-05 1989-11-08 E.A. Storz Gmbh & Co. Kg Wagenheber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8322490D0 (en) * 1983-08-20 1983-09-21 Metallifacture Ltd Vehicle jack

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2273752A1 (fr) * 1974-06-07 1976-01-02 Bilstein August Cric pour vehicules automobiles
GB2136393A (en) * 1983-02-26 1984-09-19 Metallifacture Ltd Vehicle jack
EP0340551A1 (de) * 1988-05-05 1989-11-08 E.A. Storz Gmbh & Co. Kg Wagenheber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832844A1 (de) * 1996-09-27 1998-04-01 Batz, S. Coop. Ltda. Wagenheber
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
ES2121490A1 (es) 1998-11-16
EP0697365B1 (de) 2001-03-14
DE69520316D1 (de) 2001-04-19
BR9503538A (pt) 1996-05-28
ES2121490B1 (es) 1999-05-16

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