EP0536547A1 - Cric de véhicule - Google Patents

Cric de véhicule Download PDF

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Publication number
EP0536547A1
EP0536547A1 EP92115326A EP92115326A EP0536547A1 EP 0536547 A1 EP0536547 A1 EP 0536547A1 EP 92115326 A EP92115326 A EP 92115326A EP 92115326 A EP92115326 A EP 92115326A EP 0536547 A1 EP0536547 A1 EP 0536547A1
Authority
EP
European Patent Office
Prior art keywords
support arm
openings
threaded spindle
projections
side walls
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
EP92115326A
Other languages
German (de)
English (en)
Other versions
EP0536547B1 (fr
Inventor
Thomas Pfeiffer
Norbert Bacher
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.)
EA Storz GmbH and Co KG
Original Assignee
EA Storz GmbH and Co KG
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 EA Storz GmbH and Co KG filed Critical EA Storz GmbH and Co KG
Publication of EP0536547A1 publication Critical patent/EP0536547A1/fr
Application granted granted Critical
Publication of EP0536547B1 publication Critical patent/EP0536547B1/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

  • the invention relates to a jack with a pedestal, a support arm attached to it pivotably about a first transverse axis and a threaded spindle for pivoting the support arm relative to the pedestal, on the above the first transverse axis a nut penetrated by the threaded spindle about a second transverse axis parallel to the first transverse axis is pivotally attached, the support arm having two side walls spaced apart from one another in the direction of the transverse axes, between which the threaded spindle extends obliquely from above and in which mutually opposite hook-in openings are provided, the edges of which in the mother-facing first edge regions are circular (concave to Interior of the opening) are formed, and with a spindle abutment for the threaded spindle which is held pivotably between the support arm side walls about a third transverse axis parallel to the other two transverse axes and which engages with the hanging openings
  • Such a jack is such. B. known from DE-GM 80 00 595.4, while DE-PS 27 56 108 shows jacks with open-edge hanging openings.
  • the spindle abutment consists of two circular disks penetrated by the threaded spindle, between which a ball cage of an axial ball bearing is arranged and of which the disk facing the nut is provided with two diagonally opposite, tongue-shaped lugs, which form the above-mentioned projections and engage in the hook-in openings provided in the support arm side walls.
  • the shape of the two identically designed hook-in openings corresponds approximately to a circle, the area facing the mother of which supports one of the projections of the spindle abutment when the support arm is swung up, while an oblong-hole-like opening area opens into the diagonally opposite area of this circle, which provides an insertion area for easy access Assembly of the spindle abutment in the side walls of the support arm forms - each of the suspension openings thus has approximately the shape of an oversized comma.
  • the threaded spindle in the jack To assemble the threaded spindle in the jack, it is first inserted from above with its end area provided with the spindle abutment between the side walls of the support arm, which has an upwardly open U-profile, the disc of the spindle abutment provided with the above-mentioned approaches assuming a position in which these approaches do not extend vertically, but rather diagonally to the side walls of the support arm, so that the spindle abutment with its lugs can be inserted between the side walls of the support arm and the lugs can be inserted into the hanging openings - one lug comes into the insertion area of one hanging opening, while the other lug can be pushed directly into the approximately circular area of the other hanging opening.
  • the load head provided on the free end of the support arm is designed as a sheet metal part which is approximately W-shaped in cross section and which is welded to the support arm with its central region and with its one free leg overlaps the free front end of the support arm and forms a second abutment for the front spindle end and holds the two projections of the spindle abutment against the circular arc-shaped first edge regions of the two suspension openings.
  • this measure requires not only edge-open hook openings, but also a very specific design of the load head, so that this solution z. B. is not suitable for those jacks in which, as has recently been desired, the load head is pivotally mounted about a transverse axis on the support arm.
  • the invention was an object of the invention to provide a jack of the type mentioned, which does not require a specific design of the load head, but in which the spindle abutment can be easily attached to the support arm and rattling noises can not occur.
  • the edges of the suspension openings opposite the first edge regions, have second edge regions which are designed and arranged such that the projections of the spindle abutment in each of the possible angular positions of the threaded spindle relative to the support arm when the jack is actuated
  • the longitudinal direction of the threaded spindle is at least almost free of play between the first and second edge regions.
  • the design of the suspension openings thus prevents the support arm from freely pivoting back and forth relative to the pillar after the Projections of the spindle abutment have been brought into their functional position within the suspension openings.
  • the second edge regions of the suspension openings are also formed in a circular arc (convex to the interior of the opening) in order to create good sliding surfaces for the abutment projections also on these second edge regions; in principle, of course, it would be possible to design the second edge areas differently, e.g. B. so that they abut with several projections against the surfaces of the abutment projections facing away from the mother.
  • the hanging openings are expediently designed such that they each have an insertion area at the first and second edge areas, which extends approximately in the direction of the free end of the support arm from the said edge areas.
  • this avoids the risk that the abutment projections can get into the insertion areas of the hook-in openings at any angular position of the support arm and unloaded jack, on the other hand, the abutment projections can still be easily inserted into the hook-in openings if the threaded spindle with a spindle axis oriented approximately perpendicular to the support arm bottom is used introduces between the support arm side walls after the abutment disk provided with the projections is rotated in this way was that the longitudinal extent of the two projections does not run perpendicular to the side walls of the support arm, because then one can also insert one abutment projection into the insertion area of the one insertion opening and the other abutment projection into the area of the other insertion opening adjacent to
  • a particularly simple assembly then enables a preferred embodiment of the jack according to the invention, in which channel-shaped insertion recesses are provided for inserting the projections into the suspension openings on the mutually facing inner sides of the support arm side walls, which extend from the edges of the support arm side walls to the insertion regions of the suspension openings; in such an embodiment, when the spindle abutment is inserted between the side walls of the support arm, the abutment projections can be pushed along the channel-shaped insertion depressions up to the suspension openings and then inserted into them.
  • the trough-shaped insertion recesses it could, for. B. are millings; however, this embodiment can be produced much cheaper and without weakening the support arm if the insertion recesses are formed as bead-shaped embossments of the support arm side walls.
  • FIG. 1 shows the entire jack with a pedestal 10, which has two side walls 12 lying one behind the other in FIG. 1 and a back 14 connecting them to one another, and thus a U-profile open at the top and front.
  • a foot 16 is arranged, which likewise has two side walls 18 lying one behind the other in FIG. It is articulated with its side walls 18 to the side walls 12 of the pedestal 10, by means of two rivets 22 or by means of a continuous pin riveted to its ends, so that the foot 16 has a pivot axis running perpendicular to the plane of the drawing in FIG.
  • the jack has a threaded spindle 32 which has a rivet-shaped head 34 at the front and a pivot point 36 for a hand crank 38 at the rear; in between is a threaded section 40 with which the threaded spindle 32 runs in a nut designated as a whole as 42, which can be pivoted in a known and therefore not explained manner in the column side walls 12 about a second transverse axis 44 running perpendicular to the plane of the drawing in FIG. 1 is held.
  • abutment Arranged between a spacer tube 46 penetrated by the threaded spindle 32 and the spindle head 34 is an abutment, designated as a whole by 48, the construction of which will now be explained in more detail with reference to FIGS. 2 to 4.
  • the second disk 52 has, in addition to a passage opening 58 for the threaded spindle 32 and a raceway 60 for the balls 54, two diagonally opposite tab-shaped projections or projections 62, the cross section of which corresponds approximately to a part of a circular ring and which consequently in the End view circular and inner and outer bearing surfaces 64 and 68 form.
  • the two support arm side walls 28 are provided with mutually opposite and identically designed suspension openings 70 (these are located one behind the other in FIG. 2), each of which is designed according to the invention as follows: It is composed of a storage area 72 and an insertion area 74; the bearing area 72 is directed in the direction of the nut 42 from a first concave, circular arc-shaped edge area 76 and this delimited opposite by a second convex, circular arc-shaped edge region 78.
  • the two circular arcs are, in particular, approximately concentric to one another and, according to the invention, their distance from one another is the same or only slightly greater than the distance between the two bearing surfaces 64 and 68, ie as the thickness of the projections 62 between the bearing surfaces 64 and 68.
  • each of the two hanging openings 70 merge into at least approximately rectilinear and mutually parallel edge regions 80 and 82 of the insertion region 74, and the distance between the two edge regions 80, 82 from one another is equal to or slightly greater than the maximum thickness of the projections 62 of the disk 52 of the spindle abutment 48
  • the length of the slot-shaped insertion region 74 is equal to or slightly larger than the width of the projections 62 (viewed in the direction of the axis defined by the two projections 62).
  • the two support arm side walls 28 have channel-shaped insertion recesses 84 on their mutually facing inner sides, each of which extends downward from an upper edge 83 of the relevant support arm side wall 28.
  • the insertion recesses 84 are expediently produced by an embossing process and are dimensioned such that the distance between their two longitudinal edges or edge regions 86, which define the usable depth or width of the insertion recesses 84 and run parallel to one another, is identical or somewhat is greater than the width of the projections 62, so that the spindle abutment 48 with projections 62 extending perpendicular to the support arm side walls 28 can be inserted from above between the support arm side walls.
  • the insertion recesses 84 extend down to the level of the insertion regions 74 of the insertion openings 70, so that after the projections 62 have been inserted into the insertion recesses 84, the projections 62 can be inserted into the insertion regions 74 of the insertion openings 78 by pushing back the spindle abutment 48. whereupon, by pivoting the threaded spindle 32 into the position shown in FIGS. 1 and 2, the projections 62 can be brought between the edge regions 76 and 78 of the bearing region 72 of the suspension openings 70, as shown in FIGS. 1 and 2. It can also be seen from FIG. 2 that in this position the projections 62 are held between the edge regions 76 and 78 at least almost without play, but that they can, however, perform a pivoting or rotating movement about the transverse axis 90 defined by the edge regions 76 and 78.
  • FIGS. 5 and 6 and 7 The two further embodiments of the jack according to the invention, which are shown in FIGS. 5 and 6 and 7, are described below only insofar as they differ from the first embodiment according to FIGS. 1 to 4.
  • the same reference numerals were used in FIGS. 5 and 6 and 7 as in FIGS. 1 to 4, but with the addition of a dash (for the embodiment according to FIGS. 5 and 6) or two dashes (for the embodiment according to FIG. 7). .
  • the suspension openings 70 ' are designed and oriented in exactly the same way as in the embodiment according to FIGS. 1 to 4, while the insertion recesses 84' in which extend from the upper edges 83 'of the support arm side walls 28' into the latter
  • the side view of the jack is designed in the shape of a circular arc and its two longitudinal edges or edge regions 86 'are at a distance from one another which is equal to or slightly larger than the thickness of the projections 62 of the spindle abutment 48, since the insertion recesses 84' in this embodiment are not transverse to the insertion region 74 'of the hanging openings 70' end, but are oriented in their lower end region in the longitudinal direction of the insertion regions 74 '.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP92115326A 1991-09-11 1992-09-08 Cric de véhicule Expired - Lifetime EP0536547B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4130108A DE4130108A1 (de) 1991-09-11 1991-09-11 Wagenheber
DE4130108 1991-09-11

Publications (2)

Publication Number Publication Date
EP0536547A1 true EP0536547A1 (fr) 1993-04-14
EP0536547B1 EP0536547B1 (fr) 1996-08-14

Family

ID=6440296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115326A Expired - Lifetime EP0536547B1 (fr) 1991-09-11 1992-09-08 Cric de véhicule

Country Status (3)

Country Link
EP (1) EP0536547B1 (fr)
DE (2) DE4130108A1 (fr)
ES (1) ES2090434T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734805A1 (fr) * 1995-05-29 1996-12-06 Accessoires Automobiles Cric du type boomerang

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666235A1 (fr) * 1993-07-27 1995-08-09 Batz, S. Coop. Ltda. Cric de véhicule
EP0636571B1 (fr) * 1993-07-27 1999-06-09 Batz, S. Coop. Ltda. Cric de véhicule
DE4424837A1 (de) * 1994-03-12 1995-09-14 Storz E A Kg Wagenheber
FR2741059B1 (fr) * 1995-11-13 1998-01-30 Bowden France Sa Cric comportant un montage de tourillon ameliore pour la tige de manoeuvre du cric

Citations (5)

* 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
DE2453260A1 (de) * 1974-11-09 1976-05-13 Teves Gmbh Alfred Nach dem kniehebelprinzip arbeitender wagenheber
DE2756108A1 (de) * 1977-12-16 1979-06-21 Storz E A Kg Spindelwagenheber
DE8000595U1 (de) * 1980-01-11 1981-07-02 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Spindelwagenheber
DE3037934A1 (de) * 1980-10-08 1982-05-13 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Wagenheber

Patent Citations (5)

* 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
DE2453260A1 (de) * 1974-11-09 1976-05-13 Teves Gmbh Alfred Nach dem kniehebelprinzip arbeitender wagenheber
DE2756108A1 (de) * 1977-12-16 1979-06-21 Storz E A Kg Spindelwagenheber
DE8000595U1 (de) * 1980-01-11 1981-07-02 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Spindelwagenheber
DE3037934A1 (de) * 1980-10-08 1982-05-13 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Wagenheber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734805A1 (fr) * 1995-05-29 1996-12-06 Accessoires Automobiles Cric du type boomerang

Also Published As

Publication number Publication date
EP0536547B1 (fr) 1996-08-14
DE4130108A1 (de) 1993-03-18
ES2090434T3 (es) 1996-10-16
DE59206904D1 (de) 1996-09-19

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