EP0221911A1 - Cric. - Google Patents

Cric.

Info

Publication number
EP0221911A1
EP0221911A1 EP86901812A EP86901812A EP0221911A1 EP 0221911 A1 EP0221911 A1 EP 0221911A1 EP 86901812 A EP86901812 A EP 86901812A EP 86901812 A EP86901812 A EP 86901812A EP 0221911 A1 EP0221911 A1 EP 0221911A1
Authority
EP
European Patent Office
Prior art keywords
support
control lever
jack
leg
foot piece
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
EP86901812A
Other languages
German (de)
English (en)
Other versions
EP0221911B1 (fr
Inventor
Ferdinand Alten
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.)
ThyssenKrupp Bilstein GmbH
Original Assignee
August Bilstein GmbH
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
Priority claimed from DE8513829U external-priority patent/DE8513829U1/de
Priority claimed from DE8522952U external-priority patent/DE8522952U1/de
Application filed by August Bilstein GmbH filed Critical August Bilstein GmbH
Publication of EP0221911A1 publication Critical patent/EP0221911A1/fr
Application granted granted Critical
Publication of EP0221911B1 publication Critical patent/EP0221911B1/fr
Expired 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 invention relates to a jack with a support leg and a support arm which can be pivoted about a horizontal axis thereon and has a load head at its free end, and with a rotatable threaded spindle which has a spindle nut on the one hand and a spindle abutment on the other on the upper end of the leg as well as on a joint which connects two support arms, one on the support arm and the other on the
  • Leg is articulated, at the lower end of which a foot piece is attached.
  • Such a jack is known from DE-GM 83 13 974.
  • the foot piece is articulated. It is the responsibility of the user of the jack to position it or its mainstay in the correct inclined position to lift the motor vehicle, so that the load head is lifted at all Positions of the jack are located above its base or within the friction cone emanating from this base, so that the jack does not slide away.
  • This problem of the jack lifting off when the motor vehicle is raised is particularly problematic because the vehicle has to be raised from different starting positions, namely from the lowest starting position with a fully loaded vehicle with a flat tire as well as with an unloaded vehicle with an intact one Tires. From the
  • a jack is already known, whose mainstay. has a roller foot with a flat contact surface at the lower end. With this roller foot or its contact surface, the jack or its supporting leg can be adjusted with the correct inclination " . However, with this jack it is necessary that it and its roller foot have to be adapted to the vehicle to be lifted. This jack is indeed to train and use in a practical manner, but not to be used universally for all vehicle types.
  • the invention is based on the object of improving a jack of the type mentioned in such a way that it can be arranged in positions from which the vehicle can be lifted without slipping, regardless of the type of vehicle to be lifted.
  • a control lever serving to fix the jack inclination at the beginning of the lifting operation is present, which is attached as a rigid part to the support arm articulated on the supporting leg, protrudes beyond its articulated axis and can be supported on the base, or that on the foot piece which is articulated on the main leg, the spindle actuation side of the Support point for the supporting leg and directly on the support arm of the spindle actuation side of the articulation axis is articulated.
  • control lever In the case of one embodiment it is important for the invention that the correct position of the jack when it is parked on the motor vehicle is made possible with a rigid control lever.
  • This control lever is simple and inexpensive to manufacture. As soon as the vehicle is raised, the control lever loses contact with the ground and the supporting leg can pivot around its base point and follow the movement of the vehicle. As a result, moments resulting from the movement of the vehicle - as with conventional scissor jacks - do not occur.
  • control lever is arranged as a constant connection between the support arm of the jack and its foot piece and when the jack is at rest, approximately parallel to the main leg.
  • the spindle actuation-side direct connection with the control lever causes its vertical position, so that the supporting leg is raised accordingly.
  • the support arm is raised above the support arms and thus its load head, the kinematics can be determined by choosing the position of the articulation points of the control lever so that the load head is in the friction lever above the support point of the leg on the foot piece at all initial positions of the jack.
  • the jack of the type mentioned at the outset can be designed with regard to its sequence of movements and with respect to the movements of its control lever in such a way that no significant constraints are exerted on this control lever when the motor vehicle is raised.
  • One Such an interpretation of the construction of the jack is, however, limited, especially when the vehicles to be lifted have very different movement curves when lifting, due to which considerable and unforeseeable swiveling movements of the
  • the control lever In order to relieve the control lever and its articulation points on the supporting leg and on the support arm in such a case, the control lever is a part which permits changes in shape caused by relative movements of its articulation points during the lifting process.
  • the control lever thus consists, for example, of hard rubber and can absorb or support the weight loads originating from the jack. As soon as forces acting on the jack as a result of its loading by the vehicle force movements of the supporting leg that separate or move the articulation points of the control lever from one another, the material of the control lever allows a corresponding change in shape and thus the forced displacement of its articulation points.
  • the articulation points of the control lever consist of one-sided, sheet-metal axle pins, which are formed by angling the support arm and by unlatching the foot piece. Integral parts of the support arm and the foot piece are therefore sufficient to embody the articulation points of the control lever. Since the latter consist regularly of sheet metal and are formed as stamped parts, the articulation points or the axle pins forming them can be produced in one operation, that is to say together with other shaping processes in the production of the support arm and the foot piece.
  • the control lever protrudes into the support region of the foot piece, which, when embodied as a rolling foot rigidly seated on the supporting leg, has a penetration recess for the control lever rigidly seated on its support arm.
  • the control lever can therefore be kept correspondingly compact.
  • the penetration recess is necessary when the control lever has to be supported on the floor in the support area of the foot piece.
  • the foot piece is articulated on the support leg and has a support plate on which the control lever is supported.
  • the foot piece or its support plate is used to always provide the control lever with defined support conditions, so that the influence of soft ground on the support and thus on the safety against contact is eliminated.
  • the free end of the control lever is provided with a support curve directed towards the supporting leg so that a sufficiently large support surface is always available on the bottom.
  • the supporting leg has, at its edges adjacent to the foot piece, stiffening webs directed outwards away from the control lever.
  • the latter ensure the necessary stiffening of the supporting leg in the area of the support point on the foot piece and in the entire foot area of the supporting leg on the other hand, however, at the same time that there is enough space between the stiffening webs to arrange the axle pins and also a voluminous control lever.
  • the main leg is supported on the foot piece at the greatest stroke position against further swiveling movements, which ensures the lifting function of the jack by not allowing the load head to be pulled out of the area of the friction cone above the support point by the motor vehicle, but at the same time also overloading counteracts the control lever by lower leg movements when the largest stroke position is exceeded.
  • axle pins have on both sides of their storage area " for the * " Steuer * e_rheb-el - r-ard-_ra * le - arm retention projections which secure the position of the control lever on the axle pins.
  • the support area of the foot piece is arranged vertically below the center of gravity of the jack, this can easily be placed on the floor and then pushed under the vehicle into the position where the load head is intended to engage the vehicle floor at the intended location.
  • FIG. 1 shows a schematic side view of a jack according to the invention in its lowest ready-to-lift position
  • FIG. 2 shows a side view corresponding to FIG. 1 in a ready-to-lift position, which corresponds approximately to the highest possible initial position of a motor vehicle
  • 3 shows a detailed illustration of a side view of the foot region of a further exemplary embodiment of a jack according to the invention
  • FIG. 4 shows a schematic side view of a third jack according to the invention in its lowest ready-to-lift position
  • Fig. 5 is a detailed view of a side view of the foot area of the jack of Fig. 4 at the highest lifting position of the jack and
  • FIG. 5th is the view A of FIG. 5th
  • the jack 10 essentially consists of a support leg 11 and a support arm 12 which is pivotally mounted on the support leg 11 about a horizontal axis 13.
  • the axis -13 is formed by journal L4 of a spindle nut, not shown, which is known per se and through which a threaded spindle 15 is screwed.
  • Support arms 16, 17 are connected to the support leg 11 and the support arm 12, specifically via articulated axes 18, 19, which are arranged in the upper half of the support arm 12 and in the lower half of the support leg 11, respectively.
  • the support arms 16, 17 are connected at their other ends via a joint, not shown, which is formed by journal 20 of a spindle abutment.
  • a joint not shown, which is formed by journal 20 of a spindle abutment.
  • the spindle abutment must therefore be able to allow both rotational movements of the threaded spindle 15 and pivoting movements of the support arms 16, 17.
  • the spindle abutment and also the aforementioned spindle nut are known, for example, from DE-OS 24 27 443.
  • a load head 21 in the form of a foldable support plate which is relatively movable about a hinge axis 22 to the support arm 12.
  • the position of the load head on the support arm or on the hinge axis 22 is secured by a retaining tab 24.
  • the load head 21 has a support surface 23 for abutment on the floor of the motor vehicle to be lifted.
  • a recess 25 in which, for example, a sill seam of the vehicle floor is arranged, so that the jack 10 cannot be moved on the vehicle floor.
  • the design of the load head 21 is described in detail in DE-PS 28 01 735.
  • a foot piece 26 which is designed as a rolling foot and which is rigidly seated on the standing leg 11 and has a * * rolling edge 28 between a positioning surface 27 and a standing surface * 29 '.
  • the setting surface 27 defines a support region of the foot piece 26, above which the center of gravity S is arranged, so that the jack 10 can be placed on the floor 30 without tilting.
  • a control lever 31 is provided on the support arm 17 on the supporting leg side, the bottom end of which is provided with a supporting curve 33 directed towards the supporting leg, which therefore appears convex from the floor.
  • Control curve 33 ensures that the control lever 31 can always be supported on the floor 30 with a sufficiently large support surface. Edge support is avoided.
  • the control lever 31 is directed deviating from the longitudinal axis of the support arm 17 towards the floor 30.
  • the hinge axis 19 can be arranged at the distance from the end of the supporting leg which can be seen in the figures, without having to do without the action of the control lever 31.
  • the supporting leg 11 and the support arm 12 consist, for example, of U-shaped supports, the U-bottom of which is cut away in the region of the pivot axis 13 in order to ensure the required freedom of movement.
  • the support arms 16, 17 are, for example, double lugs held at a distance from one another, but can also be profiled in a U-shape if necessary.
  • the load head 21 follows the dotted movement path shown in FIG. 2. This
  • Control of the load head 21 or the jack 10 is achieved by the appropriate dimensioning of the control lever 31.
  • Motor vehicles can be lifted from the lowest initial position of the jack according to FIG. 1 and from the highest initial position according to FIG. 2 without slipping.
  • the control lever 31 is clear of the floor 30 and the load head 21 follows the movement path of the body.
  • the foot piece 26 Since the control lever 31 according to FIG. 2 engages in the range of motion of the foot piece 26, which is designed as a rigidly attached to the supporting leg 11, this foot piece 26 must have a corresponding recess or the control lever 31 must encompass the dividing surface on both sides.
  • the foot piece 26 ' is a support plate which is articulated on the supporting leg 17 formed, which is thus articulated with a hinge axis 37 at the lower end 38 of the supporting leg 11.
  • the contact surface 27 of this foot piece 26 'always rests on the floor 30 and the control lever 31 of the support arm 17 is supported on the inner surface 34 of the foot piece 26', so that as a result it always finds defined support conditions.
  • the car jack of FIGS. 4 to 6 largely corresponds to the car jack of FIGS. 1 to 3 and differs from it by the control system described below.
  • the spindle nut 14 ′′ is shown, through which the threaded spindle 15 is screwed.
  • a U-shaped tab 52 engages on the axle journal 20, on the U-bottom 53 of which a spindle bearing 54 is supported.
  • An “ end ” engages on this spindle abutment 54.
  • a foot piece 26 is articulated and designed as a support plate, which is thus fastened with a hinge axis 37 at the lower end 38 of the support leg 11 such that it can be folded.
  • a contact surface 27 of this foot piece 26 is always on the floor 30 and to prevent slipping movements of the foot piece 26 on particularly smooth or to a certain extent compressible floors is a z.
  • B. made of rubber anti-slip bar 55 or 56 are arranged on the bottom.
  • the support point 41 of the support leg 11 on the foot piece 26 is arranged in the vicinity of the anti-slip strip 55 or the features 56.
  • the support leg 11 and the support arm 12 consist of U-shaped supports, as do the support arms 16, 17. In the latter, the U-bottoms in the area of the spindle abutment 54 are widened outwards in order to accommodate the complete cranking of the jack 10 to create the space required for the spindle abutment 54.
  • the U-bottom of the support leg 11 is recessed in the area of its lower end 38.
  • the edges 57 present in the area of the recess 58 and formed by the U-legs of the supporting leg 11 have outward-facing stiffening webs 51.
  • the stiffening webs 51 are shaped such that when the jack 10 is in the rest position, they can be arranged parallel to the foot piece 26 or to the contact surface 27 thereof insofar as they are formed on the spindle actuation side of the support point 41. Insofar as the stiffening webs 51 are arranged on the motor vehicle side from this support point 41, they run at an angle as shown in the drawing and allow the supporting leg 11 to be supported at the greatest stroke position on the foot piece 26. • So they form a footprint 29.
  • a control lever 40 is arranged in the recess 58 between the side cheeks 59 of the supporting leg 11 and is mechanically coupled on the one hand to the support arm 17 and on the other hand to the foot piece 26.
  • the coupling takes place at the articulation points 42, 43.
  • the articulation point 42 lies approximately in the horizontal plane of the articulation axis 37, while the articulation point 43 is arranged below the connecting line 48 which connects the articulation axis 19 with the articulation 20.
  • the control lever 40 is comparatively short.
  • the jack can also be cranked together very flat without the control lever 40 interfering with it.
  • axle pins 44, 45, cf. Fig. 6 are integral components of a bend 46 of the support arm 17 and a notch 47 of the foot piece 26.
  • Figs. 5, 6 show that the bend 46 is a double one, namely from the plane of the U-bottom of the support arm 17 to the hinge axis 19 on the one hand and also parallel to this hinge axis 19.
  • the bend 46 penetrates the control lever 40 and has radial arm holding projections 49, 50 on both sides thereof, which serve to secure the position of the control lever 40.
  • this Armhaltevorsprünge 49, 50 can be prepared by angulation of the Ab ⁇ made of sheet metal strong material of the support arm 17 46 "wide-punched-w * ith * -als- 7 it-the hole diameter of the control lever 40.
  • axle pins 44, 45 of the angled portion 46 or the notch 47 which are produced by punching out, can either remain square as shown in FIG. 5, or are pressed round during manufacture of the support arm 17 in one operation with this manufacture.
  • the control lever 40 has the axle pins 44, 45 correspondingly adapted holes which allow relative adjustments between it and the support arm 17 or the foot piece 26. If the control lever 40 consists of an elastic material, that is, Allows changes, for example made of hard rubber, the assembly of the control lever 40 with the foot piece 26 or the support arm 17 is possible in that the control lever 40 is pushed over the arm holding projections 49 and snapped onto the axle pins 44, 45. If the control lever 40 is not elastic, that is to say is made of steel, for example, the arm-holding projections 49 must be produced after the control lever 40 has been pushed onto the axle pins 44, 45, for example by squeezing.

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)

Abstract

Le cric (10) possède une jambe d'appui (11) comportant un bras de support (12) articulé sur un axe horizontal et présentant à son extrémité libre une tête de charge (21). Le cric (10) est pourvu d'une broche filetée rotative (15), dont l'une des extrémités passe dans un écrou se trouvant à l'extrémité supérieure de la jambe d'appui et dont l'autre extrémité tourne dans un palier fixé à une articulation reliant deux bras de support (16, 17), dont l'un est articulé sur le bras de support (12) et l'autre sur la jambe d'appui (11), qui comporte à son extrémité inférieure un pied (26). Pour que le cric (10) puisse être mis en position indépendamment du type de véhicule à lever et que le véhicule puisse être élevé sans glissement, il possède un levier (31) servant à la fixation de son inclinaison au début du levage. Le levier (31) est fixé sur le bras de support (17), qui est articulé sur la jambe d'appui (11), dépassant l'articulation (19) et s'arc-boutant sur le sol. En variente, le levier (31) est d'une part en appui sur le pied (26), qui est articulé sur la jambe d'appui (11), et d'autre part fixé directement au bras de support (17) au-dessus de l'axe d'articulation (19).
EP86901812A 1985-05-10 1986-03-20 Cric Expired EP0221911B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8513829U 1985-05-10
DE8513829U DE8513829U1 (de) 1985-05-10 1985-05-10 Wagenheber
DE8522952U DE8522952U1 (de) 1985-08-09 1985-08-09 Wagenheber
DE8522952U 1985-08-09

Publications (2)

Publication Number Publication Date
EP0221911A1 true EP0221911A1 (fr) 1987-05-20
EP0221911B1 EP0221911B1 (fr) 1989-08-09

Family

ID=25950336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901812A Expired EP0221911B1 (fr) 1985-05-10 1986-03-20 Cric

Country Status (10)

Country Link
US (1) US4765595A (fr)
EP (1) EP0221911B1 (fr)
JP (1) JPH064479B2 (fr)
KR (1) KR930003322B1 (fr)
AU (1) AU5662986A (fr)
BR (1) BR8606670A (fr)
DE (1) DE3664900D1 (fr)
ES (1) ES294056Y (fr)
WO (1) WO1986006707A1 (fr)
YU (1) YU44700B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1302389C (fr) * 1988-02-11 1992-06-02 Rudolf Gruber Verin et composants connexes
DE8902808U1 (de) * 1989-03-08 1989-05-03 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
DE9005572U1 (de) * 1990-05-16 1990-07-19 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
DE9015483U1 (de) * 1990-11-12 1991-01-31 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
GB2244975A (en) * 1990-06-14 1991-12-18 Ford Motor Co Jack for a motor vehicle
DE9015832U1 (de) * 1990-11-20 1991-02-07 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
ES1019241Y (es) * 1991-11-12 1993-01-16 T U B, S.A. Gato mecanico elevador de automoviles/
FR2692241B1 (fr) * 1992-06-12 1997-06-20 Fabrication Accessoires Automo Cric a vis du type a quadrilatere deformable, pour vehicule automobile.
DE4314136C2 (de) * 1993-04-30 1995-05-24 Bilstein August Gmbh Co Kg Wagenheber
ES2096541T3 (es) * 1995-06-20 2005-02-01 Thyssenkrupp Bilstein Gmbh Elevador de vehiculos.
US5975497A (en) * 1998-01-06 1999-11-02 Norco Industries, Inc. Multipiece trunnion for a scissor type jack
DE19804334C2 (de) * 1998-02-05 2003-05-28 Thyssen Krupp Bilstein Gmbh Wagenheber
US20050092975A1 (en) * 2003-10-31 2005-05-05 Tarra Charles J. Airplane jack
US6799749B1 (en) 2003-12-15 2004-10-05 Dura Global Technologies, Inc. Slim pantograph jack
DE102004003177B4 (de) * 2004-01-22 2005-10-20 Thyssen Krupp Bilstein Gmbh Wagenheber
US7073763B1 (en) 2004-09-14 2006-07-11 Trout Kenneth R Support rod for stabilizing an existing scissor jack
US9569912B2 (en) 2008-06-26 2017-02-14 Shopatm Bv (Sarl) Article storage and retrieval apparatus and vending machine

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Publication number Priority date Publication date Assignee Title
US1576721A (en) * 1925-08-21 1926-03-16 Earl W Conrad Lifting jack
US1954558A (en) * 1932-08-23 1934-04-10 Earl W Conrad Lifting jack
US1926610A (en) * 1933-03-13 1933-09-12 Carl E Berglund Jack
US2071470A (en) * 1933-04-18 1937-02-23 Jackomatic Corp Automobile jack
US2508934A (en) * 1946-03-14 1950-05-23 Arthur A Berg Lifting jack
US2467657A (en) * 1946-05-09 1949-04-19 Fred Lake Scissors jack
US2667328A (en) * 1950-06-13 1954-01-26 White Allen Andrew Automobile jack
DE889215C (de) * 1951-12-06 1953-09-07 Karl Kuhbier Beweglicher Staenderfuss fuer Wagenheber
US3210048A (en) * 1963-08-07 1965-10-05 Revere Electric Mfg Company Pole setting jack
DE2427443C3 (de) * 1974-06-07 1986-03-27 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
DE2621425C3 (de) * 1976-05-14 1978-09-28 Allendorfer Fabrik Fuer Stahlverarbeitung Ing. Herbert Panne Kg, 6331 Allendorf Gelenkwagenheber
DE2625085A1 (de) * 1976-06-04 1977-12-08 Bilstein August Fa Wagenheber
JPS6042159B2 (ja) * 1978-07-25 1985-09-20 アイシン精機株式会社 パンタグラフ形ジャッキ
GB2114537A (en) * 1982-02-01 1983-08-24 Kenneth Carter Motor vehicle jack
FR2528410A1 (fr) * 1982-06-14 1983-12-16 Peugeot Cric en y pour vehicule automobile
DE3302399A1 (de) * 1983-01-25 1984-08-02 Gerdes GmbH, 5000 Köln Wagenheber fuer kraftfahrzeuge
DE8313974U1 (de) * 1983-05-11 1984-10-18 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8606707A1 *

Also Published As

Publication number Publication date
EP0221911B1 (fr) 1989-08-09
AU5662986A (en) 1986-12-04
WO1986006707A1 (fr) 1986-11-20
US4765595A (en) 1988-08-23
KR930003322B1 (ko) 1993-04-26
JPS63500165A (ja) 1988-01-21
ES294056Y (es) 1987-08-01
ES294056U (es) 1986-12-16
YU74986A (en) 1989-06-30
DE3664900D1 (en) 1989-09-14
YU44700B (en) 1990-12-31
JPH064479B2 (ja) 1994-01-19
BR8606670A (pt) 1987-08-11
KR870700569A (ko) 1987-12-30

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