EP0277509A1 - Cric de voiture - Google Patents

Cric de voiture Download PDF

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Publication number
EP0277509A1
EP0277509A1 EP88100416A EP88100416A EP0277509A1 EP 0277509 A1 EP0277509 A1 EP 0277509A1 EP 88100416 A EP88100416 A EP 88100416A EP 88100416 A EP88100416 A EP 88100416A EP 0277509 A1 EP0277509 A1 EP 0277509A1
Authority
EP
European Patent Office
Prior art keywords
crank
rods
threaded spindle
rod
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
EP88100416A
Other languages
German (de)
English (en)
Other versions
EP0277509B1 (fr
Inventor
Ferdinand Alten
Willi Erschens
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
Application filed by August Bilstein GmbH filed Critical August Bilstein GmbH
Publication of EP0277509A1 publication Critical patent/EP0277509A1/fr
Application granted granted Critical
Publication of EP0277509B1 publication Critical patent/EP0277509B1/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
    • B66F13/00—Common constructional features or accessories
    • 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, with a support arm pivotable thereon about a fixed horizontal axis, with a threaded spindle which is articulated on the support leg and acts on the support arm directly or with lever arms, and with a hand crank which connects with the threaded spindle can be coupled like a universal joint and has two crank rods of approximately the same length, which are connected to one another in an articulated manner.
  • Jacks of this type are known in different embodiments.
  • So-called scissor lifts are widespread, in which the supporting leg and the support arm are part of a parallelogram of the handlebar, the bottom-side handlebar of a foot piece and the vehicle-side handlebar of a headpiece, and their common joints for stretching and together flaps of the parallelogram are engaged with the threaded spindle, which has a substantially horizontal arrangement.
  • jacks are known, e.g. B. from DE-GM 75 15 652, in which the support arm is articulated at the upper end of the supporting leg, as well as the threaded spindle, which on the other hand engages an articulated axis of a pair of lever arms, one lever arm of which acts on the supporting leg and the other lever arm on the supporting arm, so that the support arm and the support leg is spread when the threaded spindle is actuated with the aid of the lever arm pair.
  • Jacks are also known, e.g. B. from DE-GM 75 14 860, in which the fixed horizontal axis of the support arm is arranged in the region between a foot of the support leg and the articulation of the threaded spindle carried out at the upper end of the support leg, which on the other hand is articulated on the support arm.
  • the two latter embodiments of jacks are designed with a fixed crank handle.
  • This crank is designed as a wobble crank in order to be able to crank freely near the ground and to be able to fold the crank parallel to the jack in the transport position.
  • a hand crank intended for a scissor jack which can be coupled to the spindle end by means of a hook and eye and can be stowed separately for accommodation in the motor vehicle, ensures greater freedom when operating the jack.
  • This generally known hand crank of the scissor car jack is in two parts, the two crank rods being connected with a joint, so that the length of the hand crank for transportation in the motor vehicle can be reduced by folding the crank rods together.
  • the two-part is used exclusively the extension, with an L-shaped crank for cranking being present on part of the crank.
  • the invention has for its object to improve a jack of the type mentioned so that the operating forces of the jack when cranking are as small as possible with the hand crank.
  • the connecting joint thus ensures a certain angular position of the two crank rods relative to one another when the hand crank is actuated or when the motor vehicle is raised.
  • the known connecting joint does not serve to extend the hand crank, for which purpose it should serve an easy-to-use hand crank with two aligned crank rods, but rather that the connecting joint allows a certain angular position to be maintained between the two crank rods.
  • the angular position of the two crank rods relative to one another means that the crank rod on the lifting side deviates to a greater extent from its extended position with the threaded spindle, namely the hand crank without contacting the ground and to be able to operate without pivoting the crank rod on the actuating side.
  • the hand crank can be designed so that it is not only too small forces when lifting the vehicle, but also enables comfortable cranking at a distance from the ground. This is particularly important for vehicles with a low floor height or with spoilers protruding in the area where the jack is attached.
  • the connecting joint is a folding joint with a folding limit stop. This allows a structurally simple design of the articulated connection of the two crank rods, as well as a task of determining the angular position of the crank rods when actuating the jack, for example if it is located deep below the motor vehicle, or there are particularly protruding spoilers, which is a deviation of the crank rod on the lifting side from their extended position with the threaded spindle not or not to the desired extent.
  • the hand crank is then a wobble crank with a variable crank radius.
  • the crank rod has a U-shaped joint piece, in the U-leg of which a cranked end of the other crank rod engages, which has a projection determining the angular position by contact with the joint piece.
  • the crank rod on the lifter side has a holding sleeve rotatable on it in the vicinity of the connecting joint and / or the crank rod on the actuation side has a cranked crank end on the actuation side, if necessary provided with a crank knob.
  • the rotatable holding sleeve permits manual control of the crank rod or hand crank in order to be able to hold it effectively in a simple manner in the use of car lifting, without the crank rod on the surface rubbing against the surface of the holding hand or soiling it.
  • the rotatable holding sleeve ensures that both hands of the operator can hold the crank well, in particular without rubbing crank parts on the palms of the hands.
  • the actuation-side crank rod can be folded out of the actuation position having the specific angular position of both crank rods, via the extended position of both crank rods, into a transport position parallel to the lifting-side crank rod and back.
  • the hand crank In the transport position, the hand crank is consequently short, so that it can be transported together with the jack, whereby it is attached to the side or clipped on and can also be accommodated in the rim of the spare wheel of the car without requiring additional space.
  • the two crank rods are approximately threaded spindle length.
  • a torsion bar for coupling the hand crank to the threaded spindle there is a torsion bar arranged transversely on the latter and a fork piece fastened to the former, one fork arm of which is a hole which accommodates a ridge of the torsion bar with play and the other fork arm of which is a slot which accommodates the other ridge.
  • This type of assembly of the spindle end with the hand crank also gives the advantage that the jack can be attached to the vehicle by hand without a hand crank, i.e. by turning the spindle end or the rotating web with the hand, which is particularly useful in vehicles with a low floor height or with Area of the attachment point of the spoiler unloading is advantageous. Thereafter, the simple coupling described above can be carried out conveniently and easily at a distance from the operator from the jack and motor vehicle, the hand crank practically having the operating position.
  • the universal joint-like connection of the torsion bar with the fork piece is not released even when the crank rod is located flat above the ground, because no forces occur transversely to the threaded spindle during the crank movement required to lift the jack.
  • the hand crank 10 shown in FIG. 1 has two crank rods 11, 12 which are articulated to one another via a connecting joint 13.
  • the actuation-side crank rod 12 has a cranked end 14 with a rotary knob 15 and a joint-side cranked end 16 which engages in the U-leg of a U-shaped joint piece 17 which is attached to the crank rod 11 on the lifter side.
  • the crank rod 11 on the jack side has a fork piece 19 with fork arms 20, 21 on the lifting side.
  • the fork piece 19 is fastened by riveting its base 22 to the crank rod 11.
  • the fork arm 20 has a hole 23 and the fork arm 21 has a slot 24.
  • the hole 23 is designed as an elongated hole and the slot 24 extends over the entire length of the fork arm 21.
  • Both fork arms 20, 21 are somewhat different from one another at their free ends angled away so that as a result the assembly of the fork piece 19 with the jack 30 is facilitated.
  • a holding sleeve 25 is arranged on the crank rod 11 in the vicinity of the connecting joint 13 and can rotate relative to the crank rod 11 and is fixed axially in a manner not shown, for example by deformation of the crank rod 11 in the region of the end of the holding sleeve 25 on the lifting side.
  • the two crank rods 11, 12 are held together by a projection 43, which is present at the cranked end 16 of the crank rod 12 and prevents it from being pulled out of the U-legs 18 of the joint piece 17.
  • This projection is produced by riveting after inserting the cranked crank end 16 into circular bores of the U-legs 18.
  • the cranked crank rod end 16 has a projection 26 which, for example, before insertion into the U-leg 18. B. was made by squeezing out of the crank rod circumference. To insert this projection 26 between the U-legs 18, the rod-side leg has a keyhole-like opening which allows the projection 26 to be pushed through.
  • the projection 26 is arranged according to FIG. 1 so that it in the shown position of the crank rod 12 prevents its folding movement against the direction of arrow 27 by resting on the bottom 28 of the U-shaped joint piece 17. kEr thus determines the angular position of the two crank rods 11, 12 in the usual actuation position of the hand crank 10.
  • crank rod 12 does not prevent the crank rod 12 from being folded in the direction of the arrow 27, for example to reduce the crank radius or to move the crank rod 12 into the to bring the parallel position shown in Fig. 2 to the crank rod 11 so that the hand crank 10 has a transport position.
  • Fig. 3 shows the side view of a schematically illustrated jack 30, which has a supporting leg 31, on the lower end of which a roller foot 32 is rigidly attached and on the upper end of which a support arm 33 and a threaded spindle 34 are articulated.
  • the support arm 33 has at its upper end an articulated support plate 35 with which the jack 30 is attached in the area of a sill seam of its body 36 for lifting the motor vehicle.
  • the jack has two lever arms 37 which are connected to one another in an articulated manner and to the threaded spindle 34, as well as with their free ends in an articulated manner on the supporting leg 31 on the one hand and on the support arm 33 on the other hand.
  • the jack 30 shown in FIG. 3 differs from the known one in that the free end of the threaded spindle 34 has a torsion bar 41 which is fastened transversely to the threaded spindle 34 and is equally wide at both ends protrudes.
  • This torsion bar 41 interacts with the fork piece 19 of the hand crank 10 in the manner of a universal joint.
  • the fork arm 20 is inserted with its hole 23 over the upper end 42 of the torsion bar 41 in FIG. 3, the fork arm 21 engaging around the lower end of the torsion bar 41 in FIG. 3 with its two axial projections formed by the slot 24 on both sides.
  • the assembly is carried out in such a way that the crank rod 11 is initially inserted with its fork arm 21 onto the rotating web 41 approximately in the direction of the threaded spindle 34, so that the hole 23 of the fork arm 20 comes to lie above the upper end 42, after which a radial movement of the crank rod 11 leads to the engagement of this upper end 42 in the hole 23.
  • the hand crank 10 is suspended in the opposite manner, possibly with a slight swiveling of the crank rod 11 towards the jack 30.
  • Fig. 3 shows that the universal joint-like connection of the coupling and counter-coupling means of the torsion bar 41 and fork piece 19 is also ensured if the crank handle 10 has to be actuated in an angular position of the crank rod 11 relative to the threaded spindle 34 because of the proximity of the ground to the threaded rod 34 and the full crank radius of the crank rod 12 should only be available.

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)
EP88100416A 1987-02-05 1988-01-14 Cric de voiture Expired - Lifetime EP0277509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8701736U 1987-02-05
DE8701736U DE8701736U1 (de) 1987-02-05 1987-02-05 Wagenheber

Publications (2)

Publication Number Publication Date
EP0277509A1 true EP0277509A1 (fr) 1988-08-10
EP0277509B1 EP0277509B1 (fr) 1991-03-20

Family

ID=6804366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100416A Expired - Lifetime EP0277509B1 (fr) 1987-02-05 1988-01-14 Cric de voiture

Country Status (3)

Country Link
EP (1) EP0277509B1 (fr)
DE (2) DE8701736U1 (fr)
ES (1) ES2012021B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651491A1 (fr) * 1989-09-05 1991-03-08 Fabrication Accessoires Automo Cric pour le soulevement d'une charge et, notamment, d'un vehicule automobile.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8701736U1 (de) * 1987-02-05 1987-04-09 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
DE8902808U1 (de) * 1989-03-08 1989-05-03 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber
DE4024809A1 (de) * 1990-08-04 1992-02-06 Storz E A Kg Wagenheber
TWM315184U (en) * 2006-12-12 2007-07-11 Tien I Ind Co Ltd Joystick structure of jack

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479362A (en) * 1945-12-22 1949-08-16 Jackson Wilbur Jack
US2704199A (en) * 1953-08-27 1955-03-15 Alton M Olson Jack
CH483360A (de) * 1968-04-11 1969-12-31 Tangyes Ltd Wagenheber
FR2273752A1 (fr) * 1974-06-07 1976-01-02 Bilstein August Cric pour vehicules automobiles
GB2030107A (en) * 1978-09-27 1980-04-02 Takraf Schwermasch Coupling between a mechanical lifting jack and operating handle
FR2510090A1 (fr) * 1981-07-22 1983-01-28 Florimond Chabardes Outil Astr Perfectionnements aux crics " losange " destines a soulever notamment des vehicules automobiles
US4586696A (en) * 1985-10-25 1986-05-06 Chrysler Corporation Vehicle lifting jack with integral stowable crank handle
DE8701736U1 (de) * 1987-02-05 1987-04-09 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479362A (en) * 1945-12-22 1949-08-16 Jackson Wilbur Jack
US2704199A (en) * 1953-08-27 1955-03-15 Alton M Olson Jack
CH483360A (de) * 1968-04-11 1969-12-31 Tangyes Ltd Wagenheber
FR2273752A1 (fr) * 1974-06-07 1976-01-02 Bilstein August Cric pour vehicules automobiles
GB2030107A (en) * 1978-09-27 1980-04-02 Takraf Schwermasch Coupling between a mechanical lifting jack and operating handle
FR2510090A1 (fr) * 1981-07-22 1983-01-28 Florimond Chabardes Outil Astr Perfectionnements aux crics " losange " destines a soulever notamment des vehicules automobiles
US4586696A (en) * 1985-10-25 1986-05-06 Chrysler Corporation Vehicle lifting jack with integral stowable crank handle
DE8701736U1 (de) * 1987-02-05 1987-04-09 August Bilstein GmbH & Co KG, 5828 Ennepetal Wagenheber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651491A1 (fr) * 1989-09-05 1991-03-08 Fabrication Accessoires Automo Cric pour le soulevement d'une charge et, notamment, d'un vehicule automobile.

Also Published As

Publication number Publication date
DE8701736U1 (de) 1987-04-09
ES2012021B3 (es) 1991-11-16
EP0277509B1 (fr) 1991-03-20
DE3862035D1 (de) 1991-04-25
ES2012021A4 (es) 1990-03-01

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