EP0636572B1 - Hebebock, insbesondere Wagenheber - Google Patents

Hebebock, insbesondere Wagenheber Download PDF

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Publication number
EP0636572B1
EP0636572B1 EP19940401514 EP94401514A EP0636572B1 EP 0636572 B1 EP0636572 B1 EP 0636572B1 EP 19940401514 EP19940401514 EP 19940401514 EP 94401514 A EP94401514 A EP 94401514A EP 0636572 B1 EP0636572 B1 EP 0636572B1
Authority
EP
European Patent Office
Prior art keywords
jack
clevis piece
quadrilateral
links
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.)
Expired - Lifetime
Application number
EP19940401514
Other languages
English (en)
French (fr)
Other versions
EP0636572A1 (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
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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 type known, suitable to be stored in this way includes a head 1 intended for engage with the body of the vehicle to be lifted, a base 2 provided for then rest on the ground, first (3, 4) and second (5, 6) pairs of rods articulated on the head 1 and on the base 2, respectively, and connected between them by articulation pins 7, 8 substantially in the configuration a convex quadrilateral such as a rhombus.
  • the jack still includes a clevis 9 inside the quadrilateral and mounted on the hinge pin 7 connected ends of a connecting rod 3 of the first pair and of a connecting rod 5 of the second pair, at the top of the quadrilateral, and an operating screw diagonal 10 rotatably mounted on the one hand in the hinge pin 8 of the connecting rods 4 and 6, at the opposite top of the quadrilateral, and on the other hand in a threaded part 11 additionally, mounted on the end of the yoke 9 which is opposite to the one articulated on the pin 7 so that this threaded part carries the load during the lifting phase.
  • the yoke 9 makes it possible to reduce the size of the jack, in the position shown in Figure 1, relative to that of a jack of the type classic rhombus, with screw for maneuver also crossing the pin 7. In fact, in this position, the screw of a conventional jack would protrude from the pin 7 then as that of the jack in figure 1 is flush with it. Thanks to the geometry reduced dimensions of the latter due to the retraction of the screw, it is possible to install it inside contour 12 (shown in dashed line) the rim of a vehicle wheel.
  • US-4,583,713 has proposed a jack intended to facilitate the installation under the vehicle.
  • the operating screw has, at its end to be connected to the screw crank, a smooth portion free from move through the articulation of the connecting rods so as to allow automatic deployment of the jack, under the action of a spring, without it being necessary to drive the screw in rotation.
  • the user can thus concentrate pay close attention to positioning the jack under the vehicle. It is nevertheless necessary, after setting up the jack, to activate the crank to catch up with the travel of the smooth portion across the joint. Many crank turns not directly used for vehicle lifting is still necessary and the use of the jack remains somewhat tedious.
  • the present invention therefore aims to improve the jack of the figure 1 so that we can give it the geometry suitable for its storage on a wheel of a motor vehicle, by an operation simple and fast.
  • FIG. 2 This is how we find in Figures 2 to 4 representing the jack according to the invention, organs identical to those referenced 1 to 8 and 10 in FIG. 1.
  • a threaded piece 11 ' On the screw 10 is mounted a threaded piece 11 'which is distinguishes from part 11 of the jack of FIG. 1 in that that it takes the form of a substantially cylindrical axis of sufficient length for its ends to penetrate into two parallel buttonholes 13 drilled in two arms clevis parallels, articulated on the pin 7.
  • the axis 11 ' is pierced with a threaded bore transverse for the passage of the operating screw 10.
  • the jack is shown in position high, suitable for lifting the body of a vehicle automobile for changing a wheel.
  • the 11 'axis is then in abutment with the straight ends (from the point of view of the figure) buttonholes 13, this abutment being moreover necessary for raising the jack by pulling connecting rods 3 and 5 to connecting rods 4 and 6.
  • the jack in the low position shown in Figure 3.
  • the axis 11 During the entire descent of the jack, the axis 11 'remains in abutment with the straight ends of the buttonholes due to the weight of the vehicle which tends to spread the connecting rods 3.5 from connecting rods 4.6.
  • the size longitudinal of the jack In the position of Figure 3, the size longitudinal of the jack is too large for us to place it on the removed wheel, within the limits of rim 12 of this wheel, before storing the assembly in a vehicle housing for the spare wheel. So that this operation is possible, the jack must have the geometry shown in Figure 4, where its size along the axis of the screw 10 is made less than the diameter rim 12.
  • the jack is passed from the geometry of Figure 3 to that of Figure 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 along the entire length of the buttonholes 13 to come in abutment on the left ends (from the point of view of Figure 4) of these buttonholes, adjacent to the pin 7.
  • the position of these ends is determined so as to define for the jack a geometry appropriate to its storage. The operation is easy and instant. She eliminates the long and tedious operation of screw 10 which is necessary to bring the jack known in Figure 1 into the correct position.
  • pin 7 must be drilled transversely with an unthreaded hole for the passage of the screw 10 when the jack is maneuvered to pass in its high position (see Figure 2), this hole in front besides accommodating a flat formed at the left end of the screw to prevent it from coming out of the axis 11 'in low position (figure 3).
  • FIG. 5 shows a variant of the jack according to the invention which differs from that of Figures 2 to 4 by the presence of two parallel articulation axes 15.16, separate, connecting rods 3.4 respectively on the 9 '' yoke, axes 15 and 16 being symmetrically spaced longitudinal axes of the buttonholes 13. Axes 15 and 16 replace the single articulation pin 7 of the mode of Figures 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 of rotation, using two joints 18,19 respectively, spread apart like the axes 15,16.
  • this arrangement increases the height above from the floor of the jack head, with maximum overall dimensions jack constant 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)

Claims (8)

  1. Wagenheber, insbesondere für ein Kraftfahrzeug, mit einem Kopf (1), einem Fuß (2), einem ersten (3, 4) und einem zweiten (5, 6) Paar von Armen, die an den Kopf (1) und an den Fuß (2) jeweils angelenkt und miteinander im wesentlichen in Form eines konvexen Vierecks verbunden sind, einer Kappe, die an den miteinander verbundenen Enden eines Arms (3) des ersten Paares und eines Arms (5) des zweiten Paares am Scheitel des Viereckes angebracht ist, und einer Betätigungsschraubenspindel (10), die drehbar einerseits an der Verbindung (8) der beiden anderen Arme (4, 6) der Paare am gegenüberliegenden Scheitel des Vierecks und andererseits in einem mit einem komplementären Gewinde versehenen Bauteil angebracht ist, das an der Kappe angebracht ist, derart, daß das mit einem Gewinde versehene Bauteil die Last während der Hubphase trägt, dadurch gekennzeichnet, daß das besagte, mit einem Gewinde versehene Bauteil (11') zwischen zwei bestimmten Positionen bewegbar an der Kappe (9', 9'') angebracht ist, die entlang der Achse der Schraubenspindel (10) einen Abstand haben.
  2. Wagenheber nach Anspruch 1, dadurch gekennzeichnet, daß diejenige der besagten bestimmten Positionen, die dem benachbarten Scheitel des Vierecks näher liegt, eine bestimmte Geometrie des Wagenhebers festlegt, die für seine Anordnung in einem Ablageraum zweckmäßig ist.
  3. Wagenheber nach Anspruch 2, dadurch gekennzeichnet, daß er bei der besagten bestimmten Geometrie in einem Raum angeordnet werden kann, der von der Felge (12) des Ersatzrades eines Fahrzeuges begrenzt ist.
  4. Wagenheber nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das mit einem Gewinde versehene Bauteil (11') zwei Endlager aufweist, die so bemessen sind, daß sie in zwei entsprechenden parallelen Aussparungen (13) der Kappe gleitend verschiebbar sind, wobei die Enden der Aussparungen die besagten bestimmten Positionen des mit einem Gewinde versehenen Teils (11') bestimmen.
  5. Wagenheber nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Kappe (9') um einen Anlenkzapfen (7) der Enden der beiden Arme (3, 5) angelenkt ist, die mit der besagten Kappe (9') verbunden sind.
  6. Wagenheber nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Kappe an zwei parallelen Gelenkachsen (15, 16) angebracht ist, die ein Ende der beiden Arme (3, 5) jeweils mit der besagten Kappe (9'') verbinden.
  7. Wagenheber nach Anspruch 6, dadurch gekennzeichnet, daß die Arme (4, 6), die mit dem Scheitel des Viereckes verbunden sind, der demjenigen gegenüberliegt, von dem die Kappe (9') ausgeht, an einem Bauteil (17), das von der Schraubenspindel (10) durchquert wird, mittels zweier paralleler Gelenkachsen (18, 19) jeweils angelenkt sind.
  8. Wagenheber nach Anspruch 7, dadurch gekennzeichnet, daß die Enden wenigstens eines der Paare von Armen (3, 5; 4, 6), die mit der Kappe (9'') oder mit dem Scheitel des Vierecks verbunden sind, der dieser Kappe gegenüberliegt, fest und schwenkbar über Zahnsektoren (211, 212, 213, 214) oder komplementäre Kurvenscheiben gekoppelt sind.
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 EP0636572A1 (de) 1995-02-01
EP0636572B1 true 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)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771757B1 (de) * 1995-10-31 2001-11-21 Proma S.r.l. Ein Scheren- und Spindelwagenheber, insbesondere für ein Auto
KR200448000Y1 (ko) * 2008-03-17 2010-03-09 삼기산업주식회사 팬터그래프 잭
WO2011148228A1 (en) 2010-05-25 2011-12-01 Lasi S.R.L. Improved fermentation apparatus
WO2011148229A1 (en) 2010-05-25 2011-12-01 Lasi S.R.L. Improved fermentation apparatus

Family Cites Families (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
SE445445B (sv) * 1981-12-08 1986-06-23 Volvo Ab Domkraft innefattande en utvendigt gengad stang och ett invendigt gengat med stangen ingripande mutterelement
JPS58173692U (ja) * 1982-05-15 1983-11-19 株式会社三ツ知 パンタグラフ式ジヤツキ
JPS6112598A (ja) * 1984-06-29 1986-01-20 アイシン精機株式会社 パンタグラフ式ジヤツキ
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

Also Published As

Publication number Publication date
ES2124378T3 (es) 1999-02-01
FR2708243B1 (fr) 1995-10-20
DE69413335D1 (de) 1998-10-22
EP0636572A1 (de) 1995-02-01
FR2708243A1 (fr) 1995-02-03
DE69413335T2 (de) 1999-06-02

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