EP0178998A1 - Vorrichtung zum Heben eines Fahrzeuges, insbesondere Wagenheber - Google Patents

Vorrichtung zum Heben eines Fahrzeuges, insbesondere Wagenheber Download PDF

Info

Publication number
EP0178998A1
EP0178998A1 EP85402007A EP85402007A EP0178998A1 EP 0178998 A1 EP0178998 A1 EP 0178998A1 EP 85402007 A EP85402007 A EP 85402007A EP 85402007 A EP85402007 A EP 85402007A EP 0178998 A1 EP0178998 A1 EP 0178998A1
Authority
EP
European Patent Office
Prior art keywords
lifting
jack
base
parallelogram
respect
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
EP85402007A
Other languages
English (en)
French (fr)
Other versions
EP0178998B1 (de
Inventor
Maurice Silard
Maurice Fallour
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0178998A1 publication Critical patent/EP0178998A1/de
Application granted granted Critical
Publication of EP0178998B1 publication Critical patent/EP0178998B1/de
Expired 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 present invention relates to a lifting device of the jack type intended in particular for lifting motor vehicles and more particularly relating to jacks with parallelograms.
  • Parallelogram type jacks consist of a parallelogram assembly resting on a base and carrying a lifting head intended to support the load.
  • the parallelogram assembly is controlled by an operating device which consists of an operating screw provided with a drive yoke. A crank engages in this yoke to raise or lower the load.
  • this tilting moment causes additional forces in the jack, especially on the toothed parallelogram drive segments.
  • the object of the present invention is to provide a parallelogram jack which is controlled by an inclined operating device and which is perfectly balanced.
  • the lifting head has its bearing face which is offset relative to the axis of the parallelogram in order to avoid a moment of tilting of the vehicle when the jack is in the useful position for lifting the vehicle. .
  • the lifting head consists of two parallel sides which are connected by the bearing face, said bearing face being provided with an engagement end.
  • the operating device consists of an operating screw which cooperates with pins, said operating screw being provided with a stop member.
  • the base comprises holes intended to receive the lower axes, these holes are positioned relative to the sole so as to obtain the desired inclination for the operating screw.
  • the lifting device according to the invention thus allows the maneuvering screw to be easily turned because it is inclined. In addition, it avoids any tilting moment, therefore it does not present any parasitic force, in particular on the toothed segments which do not deform. Furthermore, when there is a soil with a low coefficient of grip, there is no risk of the vehicle and the jack slipping because the assembly is perfectly stable.
  • the lifting device or jack 1 comprises a parallelogram assembly which rests on a base 24 and which carries a lifting head 19. This parallelogram assembly is controlled by an operating device which is inclined relative to the ground, that is to say that is to say with respect to the sole 25 of the base 24.
  • the parallelogram assembly consists of four arms: two upper arms 2 and 3 and two lower arms 4 and 5.
  • the two upper arms 2 and 3 are articulated respectively around the upper axes 10 and 11, which are mounted on the head lifting 19 using the respective holes 10a and 11a.
  • the two lower arms 4 and 5 are articulated respectively around the lower axes 12 and 13 which are mounted in the base 24 using the respective holes 12a and 13a.
  • the upper arms 2 and 3 are respectively connected to the lower arms 4 and 5 by pins 17 and 18, the upper arm 2 hinging with the lower arm 4 by means of the pin 17 and the upper arm 3 hinging with the arm lower 5 by means of the pin 18.
  • the two upper arms 2 and 3 are respectively provided with toothed segments 6 and 7 which mesh with each other.
  • the two lower arms 4 and 5 are respectively provided with toothed segments 8 and 9 which mesh with each other.
  • the base 24 is a single piece with a sole 25 which carries two vertical sides 26 and 27. On each of these sides 26 and 27 are provided a hole 12a and a hole 13a.
  • the holes 12a are located, relative to the sole 25, at a distance which is less than that of the holes 13a.
  • This difference in position between the holes 12a and 13a is determined so as to obtain the desired inclination for the operating device.
  • the lifting head 19 is in one piece and consists of a bearing face 20 which connects two vertical parallel sides 21 and 22.
  • each of these sides 21 and 22 are provided a hole 10a and a hole lla.
  • the holes 10a must be located relative to the support face 20, at a distance which is greater than that of the holes 11a. This difference in position is determined so as to obtain the desired inclination for the operating device.
  • the bearing face 20 is offset by a value A relative to the axis B of the parallelogram in order to avoid a moment of tilting of the vehicle when the jack 1 is in the useful position for lifting the vehicle.
  • the lifting head 19 has an engagement end 23 which is linked to the bearing face 20.
  • the operating device comprises an operating screw 14 which ends in a drive yoke 15 making it possible to rotate the operating screw 14 by means of a crank not shown.
  • This maneuvering screw 14 is screwed into the pin 17 and freely crosses the pin 18. This pin 18 is applied against a stop member 16 of the maneuver screw 14.

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)
  • Forklifts And Lifting Vehicles (AREA)
EP19850402007 1984-10-16 1985-10-16 Vorrichtung zum Heben eines Fahrzeuges, insbesondere Wagenheber Expired EP0178998B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8415811 1984-10-16
FR8415811A FR2571708B1 (fr) 1984-10-16 1984-10-16 Dispositif de levage de vehicule du type " cric "

Publications (2)

Publication Number Publication Date
EP0178998A1 true EP0178998A1 (de) 1986-04-23
EP0178998B1 EP0178998B1 (de) 1988-11-30

Family

ID=9308682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850402007 Expired EP0178998B1 (de) 1984-10-16 1985-10-16 Vorrichtung zum Heben eines Fahrzeuges, insbesondere Wagenheber

Country Status (4)

Country Link
EP (1) EP0178998B1 (de)
DE (1) DE3566525D1 (de)
ES (1) ES296114Y (de)
FR (1) FR2571708B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335775A1 (de) * 1988-03-29 1989-10-04 Elf Atochem S.A. Verfahren zur Herstellung von Polydichlorphosphazenverbindungen mit kontrolliertem cyclischem Oligomergehalt und auf diese Weise hergestellte Verbindungen
EP0771757A3 (de) * 1995-10-31 1998-08-05 Proma S.r.l. Ein Scheren- und Spindelwagenheber, insbesondere für ein Auto
EP0774440A3 (de) * 1995-11-07 1999-03-31 Ventra Group Inc. Einteilige Lastaufnahme
WO2017127038A1 (en) * 2016-01-23 2017-07-27 Arikan Kriko Ve Makina Sanayi Ve Ticaret Anonim Sirketi Lifting heads for jackscrews
CN108640007A (zh) * 2018-06-27 2018-10-12 上海宝山大陆汽车配件有限公司 剪式千斤顶
FR3112137A1 (fr) 2020-07-03 2022-01-07 Renault S.A.S Système de levage d’un véhicule automobile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE925072C (de) * 1949-06-08 1955-03-10 Gen Motors Corp Scherenartiger Wagenheber
US2920871A (en) * 1957-04-26 1960-01-12 Samuel S Kolodin Automobile jack
US3317187A (en) * 1966-02-07 1967-05-02 Ryerson & Haynes Inc Scissors jack
FR2314132A1 (fr) * 1975-06-11 1977-01-07 Noury Roger Cric en particulier pour vehicule automobile et procede pour sa fabrica
GB2050551A (en) * 1979-05-10 1981-01-07 Aguirregomezcorta Sa Vehicle Jack
FR2510090A1 (fr) * 1981-07-22 1983-01-28 Florimond Chabardes Outil Astr Perfectionnements aux crics " losange " destines a soulever notamment des vehicules automobiles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE925072C (de) * 1949-06-08 1955-03-10 Gen Motors Corp Scherenartiger Wagenheber
US2920871A (en) * 1957-04-26 1960-01-12 Samuel S Kolodin Automobile jack
US3317187A (en) * 1966-02-07 1967-05-02 Ryerson & Haynes Inc Scissors jack
FR2314132A1 (fr) * 1975-06-11 1977-01-07 Noury Roger Cric en particulier pour vehicule automobile et procede pour sa fabrica
GB2050551A (en) * 1979-05-10 1981-01-07 Aguirregomezcorta Sa Vehicle Jack
FR2510090A1 (fr) * 1981-07-22 1983-01-28 Florimond Chabardes Outil Astr Perfectionnements aux crics " losange " destines a soulever notamment des vehicules automobiles

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335775A1 (de) * 1988-03-29 1989-10-04 Elf Atochem S.A. Verfahren zur Herstellung von Polydichlorphosphazenverbindungen mit kontrolliertem cyclischem Oligomergehalt und auf diese Weise hergestellte Verbindungen
EP0771757A3 (de) * 1995-10-31 1998-08-05 Proma S.r.l. Ein Scheren- und Spindelwagenheber, insbesondere für ein Auto
EP0774440A3 (de) * 1995-11-07 1999-03-31 Ventra Group Inc. Einteilige Lastaufnahme
WO2017127038A1 (en) * 2016-01-23 2017-07-27 Arikan Kriko Ve Makina Sanayi Ve Ticaret Anonim Sirketi Lifting heads for jackscrews
CN108640007A (zh) * 2018-06-27 2018-10-12 上海宝山大陆汽车配件有限公司 剪式千斤顶
FR3112137A1 (fr) 2020-07-03 2022-01-07 Renault S.A.S Système de levage d’un véhicule automobile

Also Published As

Publication number Publication date
ES296114U (es) 1987-11-01
FR2571708B1 (fr) 1987-12-18
EP0178998B1 (de) 1988-11-30
FR2571708A1 (fr) 1986-04-18
ES296114Y (es) 1989-05-01
DE3566525D1 (en) 1989-01-05

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