EP0636572A1 - Hebebock, insbesondere Wagenheber - Google Patents

Hebebock, insbesondere Wagenheber Download PDF

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Publication number
EP0636572A1
EP0636572A1 EP94401514A EP94401514A EP0636572A1 EP 0636572 A1 EP0636572 A1 EP 0636572A1 EP 94401514 A EP94401514 A EP 94401514A EP 94401514 A EP94401514 A EP 94401514A EP 0636572 A1 EP0636572 A1 EP 0636572A1
Authority
EP
European Patent Office
Prior art keywords
yoke
jack
quadrilateral
connecting rods
screw
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
EP94401514A
Other languages
English (en)
French (fr)
Other versions
EP0636572B1 (de
Inventor
Gilles Ruffie
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.)
Systemes B L G
Original Assignee
Systemes B L G
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 Systemes B L G filed Critical Systemes B L G
Publication of EP0636572A1 publication Critical patent/EP0636572A1/de
Application granted granted Critical
Publication of EP0636572B1 publication Critical patent/EP0636572B1/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

  • the present invention relates to a lifting jack and, more particularly, to such a jack designed to be stored on the spare wheel of a motor vehicle.
  • a jack of a known type suitable for being stored in this way. It comprises a head 1 intended to come into engagement with the body of the vehicle to be lifted, a base 2 provided for then resting on the ground, first (3, 4) and second (5, 6) pairs of connecting rods articulated on the head 1 and on the base 2, respectively, and connected together by articulation pins 7, 8 substantially in the configuration of a convex quadrilateral such as a rhombus.
  • the jack also comprises a clevis 9 inside the quadrilateral and mounted on the articulation pin 7 of the connected ends of a connecting rod 3 of the first pair and of a connecting rod 5 of the second pair, to a top of the quadrilateral, and a diagonal operating screw 10 rotatably mounted in the hinge pin 8 of the connecting rods 4 and 6, at the opposite top of the quadrilateral, and in a piece 11 additionally threaded, mounted on the end of the yoke 9 which is opposite to that which is articulated on the pin 7.
  • the yoke 9 makes it possible to reduce the size of the jack, in the position shown in FIG. 1, compared to that of a jack of the conventional rhombus type, with an operating screw also passing through the pin 7. In fact, in this position , the screw of a conventional jack overflows from the pin 7 while that of the jack of Figure 1 is flush. Thanks to the geometry of reduced dimensions of the latter due to the retraction of the screw, it is possible to install it inside the contour 12 (shown in phantom) of the rim of a wheel of the vehicle.
  • the jack When the jack has just been used to replace a vehicle wheel with the spare wheel, the jack is folded back into the low position, of maximum size, along the axis of the screw 10. In this position, it is not normally possible not install it in the rim of a wheel to store it there. It is therefore necessary, beforehand, to give it the shape shown in FIG. 1 so that its size along the axis of the screw becomes less than the diameter of the contour 12. To do this, it is necessary to turn the screw 10 again to unfold it sufficiently, which is long and tedious.
  • the present invention therefore aims to improve the jack of Figure 1 so that it can be given the geometry suitable for its storage on a wheel of a motor vehicle, by a simple and quick maneuver.
  • FIG. 2 to 4 representing the jack according to the invention, members identical to those referenced 1 to 8 and 10 in Figure 1.
  • a threaded piece 11 ' which is distinguished from the piece 11 of the jack of Figure 1 in that it takes the form of a substantially cylindrical axis of sufficient length so that its ends penetrate into two parallel buttonholes 13 drilled in two parallel arms of the yoke, articulated on the pin 7.
  • the axis 11 ' is pierced with a transverse threaded bore for the passage of the operating screw 10.
  • the jack is shown in the high position, suitable for lifting the body of a motor vehicle for changing a wheel.
  • the axis 11 ' is then in abutment with the straight ends (from the point of view of the figure) of the buttonholes 13, this abutment being moreover necessary for raising the jack by pulling the connecting rods 3 and 5 towards the connecting rods 4 and 6.
  • the jack is brought back to the low position shown in FIG. 3. Throughout the descent of the jack, the axle 11 'remains in abutment with the straight ends of the buttonholes due to the weight of the vehicle which tends to move the connecting rods 3.5 away from the connecting rods 4.6. In the position of FIG. 3, the longitudinal dimensions of the jack are too large for it to be possible to place it on the removed wheel, within the limits of the rim 12 of this wheel, before storing the assembly in a vehicle housing provided for the spare tire. For this operation to be possible, the jack must have the geometry shown in FIG. 4, where its size along the axis of the screw 10 is made less than the diameter of the rim 12.
  • the jack is passed from the geometry of FIG. 3 to that of FIG. 4, by a simple manual pull exerted between the head 1 and the base 2 in the direction of the arrows F, so that the axis 11 'slides over the entire length of the buttonholes 13 to come into abutment on the left ends (from the point of view of FIG. 4) of these buttonholes, adjacent to the pin 7.
  • the position of these ends is determined so as to define for the jack geometry suitable for its storage. The operation is easy and instant. It eliminates the long and tedious operation of the screw 10 which is necessary to bring the jack known in FIG. 1 into the suitable position.
  • this position depends not only on the position of the left ends (from the point of view of FIG. 4) of the buttonholes 13 but also on the position of the axis 11 'on the operating screw 10, at the time where the jack is pulled to bring it into the position of FIG. 4. It will be understood that the position of this axis 11 'on the screw 10, at the end of the descent of the jack, after a change of wheel (FIG. 3 ), is substantially constant, except for a few crank turns. The necessary tolerance to be provided for the precision of the jack's low position can easily be taken into account by an adequate dimensioning of the latter.
  • the pin 7 must be pierced transversely with a non-threaded hole for the passage of the screw 10 when the jack is maneuvered to pass into its high position (see FIG. 2), this hole also having to accommodate a flat formed at the left end of the screw to prevent it from coming out of the axis 11 'in the low position ( Figure 3).
  • FIG. 5 a variant of the jack according to the invention which differs from that of Figures 2 to 4 by the presence of two parallel axes of articulation 15,16, distinct, connecting rods 3,4 respectively on the yoke 9 '', axes 15 and 16 being symmetrically spaced longitudinal axes of the buttonholes 13.
  • the axes 15 and 16 replace the single hinge pin 7 of the embodiment of FIGS. 2 to 4.
  • the connecting rods 4 and 6 are mounted on a part 17 through which the screw 10 passes in the vicinity of its stirrup 20 for rotating, using two joints 18,19 respectively, spaced apart like the axes 15,16. It is understood that this arrangement makes it possible to increase the height above the ground of the head of the jack, with constant maximum overall dimensions of the jack along the axis of the screw.

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)
EP19940401514 1993-07-01 1994-07-01 Hebebock, insbesondere Wagenheber Expired - Lifetime EP0636572B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9308053A FR2708243B1 (fr) 1993-07-01 1993-07-01 Cric de levage, notamment pour véhicule automobile.
FR9308053 1993-07-01

Publications (2)

Publication Number Publication Date
EP0636572A1 true EP0636572A1 (de) 1995-02-01
EP0636572B1 EP0636572B1 (de) 1998-09-16

Family

ID=9448787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940401514 Expired - Lifetime EP0636572B1 (de) 1993-07-01 1994-07-01 Hebebock, insbesondere Wagenheber

Country Status (4)

Country Link
EP (1) EP0636572B1 (de)
DE (1) DE69413335T2 (de)
ES (1) ES2124378T3 (de)
FR (1) FR2708243B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771757A3 (de) * 1995-10-31 1998-08-05 Proma S.r.l. Ein Scheren- und Spindelwagenheber, insbesondere für ein Auto
KR200448000Y1 (ko) * 2008-03-17 2010-03-09 삼기산업주식회사 팬터그래프 잭

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2576756A1 (de) 2010-05-25 2013-04-10 Lasi Srl Verbessertes fermentationsgerät
WO2011148228A1 (en) 2010-05-25 2011-12-01 Lasi S.R.L. Improved fermentation apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092012A (en) * 1977-01-13 1978-05-30 Otsuka Koki Co., Ltd. Ratchet type quick feeding mechanism for automobile pantograph jack
FR2389571A1 (en) * 1977-05-03 1978-12-01 Noury Roger Toggle type screw jack for automobile - has cover for screw thread to prevent user soiling hands
GB2111018A (en) * 1981-12-08 1983-06-29 Volvo Ab Jack
DE3315892A1 (de) * 1982-05-15 1983-11-24 Mitsuchi Corp., Nagoya Kniehebel-schraubenwinde
US4583713A (en) * 1984-06-29 1986-04-22 Aisin Seiki Kabushiki Kaisha Pantograph jack apparatus
US4720082A (en) * 1986-01-08 1988-01-19 Yang Tai Her Guide rod drive method and structure using slidable drive screw nut set for generating drive feeding dependent on the speed change of the load

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092012A (en) * 1977-01-13 1978-05-30 Otsuka Koki Co., Ltd. Ratchet type quick feeding mechanism for automobile pantograph jack
FR2389571A1 (en) * 1977-05-03 1978-12-01 Noury Roger Toggle type screw jack for automobile - has cover for screw thread to prevent user soiling hands
GB2111018A (en) * 1981-12-08 1983-06-29 Volvo Ab Jack
DE3315892A1 (de) * 1982-05-15 1983-11-24 Mitsuchi Corp., Nagoya Kniehebel-schraubenwinde
US4583713A (en) * 1984-06-29 1986-04-22 Aisin Seiki Kabushiki Kaisha Pantograph jack apparatus
US4720082A (en) * 1986-01-08 1988-01-19 Yang Tai Her Guide rod drive method and structure using slidable drive screw nut set for generating drive feeding dependent on the speed change of the load

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771757A3 (de) * 1995-10-31 1998-08-05 Proma S.r.l. Ein Scheren- und Spindelwagenheber, insbesondere für ein Auto
KR200448000Y1 (ko) * 2008-03-17 2010-03-09 삼기산업주식회사 팬터그래프 잭

Also Published As

Publication number Publication date
DE69413335D1 (de) 1998-10-22
FR2708243B1 (fr) 1995-10-20
DE69413335T2 (de) 1999-06-02
FR2708243A1 (fr) 1995-02-03
EP0636572B1 (de) 1998-09-16
ES2124378T3 (es) 1999-02-01

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