EP0226695B1 - Jack for motor vehicles - Google Patents

Jack for motor vehicles Download PDF

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Publication number
EP0226695B1
EP0226695B1 EP86106884A EP86106884A EP0226695B1 EP 0226695 B1 EP0226695 B1 EP 0226695B1 EP 86106884 A EP86106884 A EP 86106884A EP 86106884 A EP86106884 A EP 86106884A EP 0226695 B1 EP0226695 B1 EP 0226695B1
Authority
EP
European Patent Office
Prior art keywords
jack
base part
side walls
arm
pins
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
Application number
EP86106884A
Other languages
German (de)
French (fr)
Other versions
EP0226695A1 (en
Inventor
Manfred Niendorf
Rainer Stechemesser
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.)
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
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 Ford Werke GmbH, Ford France SA, Ford Motor Co Ltd filed Critical Ford Werke GmbH
Publication of EP0226695A1 publication Critical patent/EP0226695A1/en
Application granted granted Critical
Publication of EP0226695B1 publication Critical patent/EP0226695B1/en
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 invention relates to a jack for motor vehicles in the preamble of
  • the known jack has the disadvantage that it must be pushed completely under the motor vehicle so that the lifting curve of the load head can follow the tilting movement of the motor vehicle, making the accessibility of the threaded spindle, which is located directly on the ground, difficult.
  • a modified embodiment of a jack for motor vehicles is known according to the preamble of claim 1, in which the joint arrangement of the jack is designed so that it can be attached laterally outside the motor vehicle. Operation is facilitated by a slightly higher position of the actuating end of the threaded spindle.
  • the base part is connected in an articulated manner to a foot part in which the support arm can be supported in two different positions, and this foot part enables the load head to have a lifting curve which, by pulling up the base part relative to the foot part, can approximately follow the tilting of the motor vehicle.
  • the object of the invention is to improve a jack for motor vehicles of the type explained in the preamble of claim 1 in such a way that easier handling of the jack is achieved with improved functionality.
  • a jack for motor vehicles according to the preamble of claim 1 has the features shown in the characterizing part of claim 1.
  • the base part has a U-shaped cross-section and has in the vertical side walls, slightly S-shaped link slots, in which the bolts of the nut piece are guided, a lifting curve of the load head is achieved which, when the base part rests, the tilting movement of the motor vehicle that occurs corresponds and thus ensures high stability and functional reliability.
  • the vehicle jack shown in FIGS. 1 to 3 essentially consists of a base part 1 with a deep, U-shaped cross section, which has vertical side walls 2 and 3 with adjoining outwardly angled reinforcing flanges 4 and 5.
  • a threaded spindle 7 is arranged, the load-side end of which is supported by a spindle bearing 8 in a bearing block 9 and the actuation-side end by means of a nut piece 10 and bolts 11 extending perpendicular thereto in lying, slightly S-shaped link slots 12 is supported.
  • the free end of the threaded spindle 7 has an actuating ring 13.
  • a cantilevered load arm 14 is supported with its fork-shaped end 15 on the bolt 11 on the nut piece 10 and carries at its free end a load head 16 which is adapted to the receptacle on the motor vehicle.
  • a support arm 17 hinges on a pin 18. The other end of the support arm 17 is supported by a bolt 19 in the vertical side walls 2 and 3 of the base part 1.
  • the load arm 14 and the support arm 17 are, as can best be seen from FIGS. 4a to 4d, designed as rigid, U-shaped cross-sections.
  • both the base part 1 and the bearing block 9 as well as the load arm 14 and the support arm 17 are designed as stable sheet-metal pressed parts.
  • the actuation-side end of the base part 1 is lifted somewhat off the floor by means of a support foot 20.
  • the jack is placed on the floor with its horizontal base part 1 and the foot 20 and the lower fork-shaped end of the load arm 14 is placed on the bolts 11 on the nut piece 10. So that can not be completely in at the lowest end position of the nut piece 10, an initial height of the load head 16 can be set, from which the actuation begins. As a result, the cumbersome and time-consuming turning of the threaded spindle 7 can be considerably reduced.
  • the nut piece 10 moves along the slightly S-shaped link slots 12 in the direction of the spindle bearing 8 and thereby urges the load arm 14 and the support arm 17 via the articulated connection with the bolt 18 up.
  • the load head 16 moves here along the stroke curve indicated by construction steps, which clearly follows a tilting movement of the motor vehicle.
  • the threaded spindle need only be actuated until the load head 16 is released from the motor vehicle. If you now pull the jack out from under the motor vehicle, you can disengage it with its fork-shaped end from the bolts 11 on the nut piece 10 by slightly lifting the load arm 14, as a result of which the jack can be fully folded without the nut piece 10 being in its outermost position End position must be turned. When the jack is used again, the initial height required for the motor vehicle can then be set immediately by hooking in the fork-shaped end 15 of the load arm 14.

Description

Die Erfindung betrifft einen Wagenheber für Kraftfahrzeuge der im Oberbegriff desThe invention relates to a jack for motor vehicles in the preamble of

Patentanspruchs 1 erläuterten Art.Claim 1 explained Art.

Aus der GB-PS-1 227 715 ist ein Wagenheber für Kraftfahrzeuge der im Oberbegriff des Patentanspruchs 1 erläuterten Art bekannt. Bei diesem Wagenheber besteht dieFrom GB-PS-1 227 715 a jack for motor vehicles of the type explained in the preamble of claim 1 is known. With this jack there is

Möglichkeit, den etwa in der Mitte des Lastarmes angreifenden Stützarm leicht lösbar am Basisteil abzustützen, wodurch der Wagenheber in einfacher Weise auf eine Anfangshöhe eingestellt werden kann, von der aus dann durch Drehung der Gewindespindel der Hubvorgang beginnen kann.Possibility to support the support arm, which acts approximately in the middle of the load arm, in a detachable manner on the base part, as a result of which the jack can be easily adjusted to an initial height, from which the lifting process can then begin by rotating the threaded spindle.

Der bekannte Wagenheber weist den Nachteil auf, daß er vollständig unter das Kraftfahrzeug geschoben werden muß, damit die Hubkurve des Lastkopfes der Kippbewegung des Kraftfahrzeuges folgen kann, wodurch die Zugänglichkeit der Gewindespindel, die unmittelbar am Boden liegt, schwierig ist.The known jack has the disadvantage that it must be pushed completely under the motor vehicle so that the lifting curve of the load head can follow the tilting movement of the motor vehicle, making the accessibility of the threaded spindle, which is located directly on the ground, difficult.

Aus der GB-PS-1 322 426 ist eine veränderte Ausführungsform eines Wagenhebers für Kraftfahrzeuge gemäß dem Oberbegriff des Patentanspruchs 1 bekannt, bei der die Gelenkanordnung des Wagenhebers so ausgelegt ist, daß er seitlich außerhalb des Kraftfahrzeuges angesetzt werden kann. Durch eine etwas höhere Lage des Betätigungsendes der Gewindespindel ist die Bedienung erleichtert. Das Basisteil ist hierbei gelenkig mit einem Fußteil verbunden, in dem der Stützarm in zwei unterschiedlichen Stellungen abstützbar ist, und dieses Fußteil ermöglicht dem Lastkopf eine Hubkurve, die durch Hochziehen des Basisteiles gegenüber dem Fußteil etwa dem Kippen des Kraftfahrzeuges folgen kann. Dadurch wird jedoch die Standsicherheit des Wagenhebers gegenüber der Auflage mit dem gesamten Basisteil erheblich verringert.From GB-PS-1 322 426 a modified embodiment of a jack for motor vehicles is known according to the preamble of claim 1, in which the joint arrangement of the jack is designed so that it can be attached laterally outside the motor vehicle. Operation is facilitated by a slightly higher position of the actuating end of the threaded spindle. The base part is connected in an articulated manner to a foot part in which the support arm can be supported in two different positions, and this foot part enables the load head to have a lifting curve which, by pulling up the base part relative to the foot part, can approximately follow the tilting of the motor vehicle. However, this significantly reduces the stability of the jack compared to the support with the entire base part.

Die Aufgabe der Erfindung ist es, einen Wagenheber für Kraftfahrzeuge der im Oberbegriff des Patentanspruchs 1 erläuterten Art derart zu verbessern, daß eine einfachere Handhabung des Wagenhebers bei verbesserter Funktionsweise erzielt wird.The object of the invention is to improve a jack for motor vehicles of the type explained in the preamble of claim 1 in such a way that easier handling of the jack is achieved with improved functionality.

Gemäß der Erfindung wird diese Aufgabe gelöst, indem ein Wagenheber für Kraftfahrzeuge gemäß dem Oberbegriff des Patentanspruchs 1 die im Kennzeichenteil des Patentanspruchs 1 aufgezeigten Merkmale aufweist.According to the invention, this object is achieved in that a jack for motor vehicles according to the preamble of claim 1 has the features shown in the characterizing part of claim 1.

Dadurch, daß das Basisteil einen U-förmigen Querschnitt aufweist und in den vertikalen Seitenwänden liegende, leicht S-förmige Kulissenschlitze aufweist, in denen die Bolzen des Mutterstückes geführt sind, wird eine Hubkurve des Lastkopfes erzielt, die bei aufliegendem Basisteil der auftretenden Kippbewegung des Kraftfahrzeuges entspricht und damit für eine hohe Standfestigkeit und Funktionssicherheit sorgt.Characterized in that the base part has a U-shaped cross-section and has in the vertical side walls, slightly S-shaped link slots, in which the bolts of the nut piece are guided, a lifting curve of the load head is achieved which, when the base part rests, the tilting movement of the motor vehicle that occurs corresponds and thus ensures high stability and functional reliability.

In den weiteren Ansprüchen sind zweckmässige Ausgestaltungen der Erfindung näher erläutert.In the further claims, expedient embodiments of the invention are explained in more detail.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung näher erläutert.In the drawing, an embodiment of the invention is explained in more detail.

Es zeigt:

  • Fig. 1 eine Seitenansicht eines
  • Wagenhebers gemäß der Erfindung; Fig. 2 eine Draufsicht auf einen Wagenheber ' nach Fig. 1;
  • Fig. 3 eine Seitenansicht des Wagenhebers in Richtung des Pfeiles 111 in Fig. 1;
  • Fig. 4a bis 4d vertikale Schnitte entlang der Linien a-a, b-b, c-c und d-d in Fig. 1 und
  • Fig. 5 eine Seitenansicht des Wagenhebers 5 mit angedeuteter Konstruktion der Hubkurve des Lustkopfes.
It shows:
  • Fig. 1 is a side view of a
  • Jack according to the invention; Fig. 2 is a plan view of a jack 'of Fig. 1.
  • Fig. 3 is a side view of the jack in the direction of arrow 111 in Fig. 1;
  • 4a to 4d vertical sections along the lines aa, bb, cc and dd in Fig. 1 and
  • Fig. 5 is a side view of the jack 5 with an indicated construction of the stroke curve of the lust head.

Der in den Figuren 1 bis 3 gezeigte Wagenheber besteht im Wesentlichen aus einem Basisteil 1 mit einem tiefen, U-förmigen Querschnitt, der vertikale Seitenwände 2 und 3 mit sich anschließenden nach außen abgewinkelten Verstärkungsflanschen 4 und 5 aufweist.The vehicle jack shown in FIGS. 1 to 3 essentially consists of a base part 1 with a deep, U-shaped cross section, which has vertical side walls 2 and 3 with adjoining outwardly angled reinforcing flanges 4 and 5.

Zwischen den Seitenwänden 2 und 3 ist eine Gewindespindel 7 angeordnet, deren lastseitiges Ende über ein Spindellager 8 in einem Lagerbock 9 abgestützt ist und deren betätigungsseitiges Ende über ein Mutterstück 10 und sich hierzu senkrecht erstreckende Bolzen 11 in liegenden, leicht S-förmigen Kulissenschlitzen 12 ab gestützt ist. Das freie Ende der Gewindespindel 7 weist einen Betätigungsring 13 auf.Between the side walls 2 and 3, a threaded spindle 7 is arranged, the load-side end of which is supported by a spindle bearing 8 in a bearing block 9 and the actuation-side end by means of a nut piece 10 and bolts 11 extending perpendicular thereto in lying, slightly S-shaped link slots 12 is supported. The free end of the threaded spindle 7 has an actuating ring 13.

Ein freitragender Lastarm 14 stützt sich mit seinem gabelförmigen Ende 15 an den Bolzen 11 am Mutterstück 10 ab und trägt an seinem freien Ende einen Lastkopf 16, der der Aufnahme am Kraftfahrzeug angepaßt ist. Etwa in der Mitte des Lastarmes 14 greift ein Stützarm 17 über einen Bolzen 18 gelenkig an. Das andere Ende des Stützarmes 17 ist über einen Bolzen 19 in den vertikalen Seitenwänden 2 und 3 des Basisteiles 1 abgestützt.A cantilevered load arm 14 is supported with its fork-shaped end 15 on the bolt 11 on the nut piece 10 and carries at its free end a load head 16 which is adapted to the receptacle on the motor vehicle. Approximately in the middle of the load arm 14, a support arm 17 hinges on a pin 18. The other end of the support arm 17 is supported by a bolt 19 in the vertical side walls 2 and 3 of the base part 1.

Der Lastarm 14 und der Stützarm 17 sind hierbei, wie am besten aus den Figuren 4a bis 4d zu ersehen ist, als steife, U-förmige Querschnitte aufweisende Bauteile ausgeführt. Vorzugsweise sind sowohl das Basisteil 1 als auch der Lagerbock 9 sowie der Lastarm 14 und der Stützarm 17 als stabile Blechpreßteile ausgebildet. Um eine günstigere Höhenlage des Betätigungsringes 13 der Gewindespindel 7 zu erreichen, ist das betätigungsseitige Ende des Basisteiles 1 über einen Stützfuß 20 etwas vom Boden abgehoben.The load arm 14 and the support arm 17 are, as can best be seen from FIGS. 4a to 4d, designed as rigid, U-shaped cross-sections. Preferably, both the base part 1 and the bearing block 9 as well as the load arm 14 and the support arm 17 are designed as stable sheet-metal pressed parts. In order to achieve a more favorable height position of the actuation ring 13 of the threaded spindle 7, the actuation-side end of the base part 1 is lifted somewhat off the floor by means of a support foot 20.

In Zusammenhang mit Fig. 5 wird nunmehr die Funktionsweise des Wagenhebers gemäß der Erfindung erläutert.The operation of the jack according to the invention will now be explained in connection with FIG. 5.

Der Wagenheber wird mit seinem horizontalen Basisteil 1 und dem Fuß 20 auf dem Boden aufgelegt und das untere gabelförmige Ende des Lastarmes 14 auf die Bolzen 11 am Mutterstück 10 aufgesetzt. Damit kann bei nicht völlig in unterster Endstellung befindlichem Mutterstück 10 eine Anfangshöhe des Lastkopfes 16 eingestellt werden, von der aus die Betätigung beginnt. Dadurch kann ein umständliches und zeitraubendes Drehen der Gewindespindel 7 erheblich verringert werden.The jack is placed on the floor with its horizontal base part 1 and the foot 20 and the lower fork-shaped end of the load arm 14 is placed on the bolts 11 on the nut piece 10. So that can not be completely in at the lowest end position of the nut piece 10, an initial height of the load head 16 can be set, from which the actuation begins. As a result, the cumbersome and time-consuming turning of the threaded spindle 7 can be considerably reduced.

Wird nun über den Betätigungsring 13 die Gewindespindel 7 gedreht, so bewegt sich das Mutterstück 10 entlang der leicht S-förmigen Kulissenschlitze 12 in Richtung auf das Spindellager 8 zu und drängt hierdurch den Lastarm 14 und den Stützarm 17 über die gelenkige Verbindung mit dem Bolzen 18 nach oben. Der Lastkopf 16 bewegt sich hierbei entlang der durch Konstruktionsschritte angedeuteten Hubkurve, die eindeutig einer Kippbewegung des Kraftfahrzeuges folgt.If the threaded spindle 7 is now rotated via the actuating ring 13, the nut piece 10 moves along the slightly S-shaped link slots 12 in the direction of the spindle bearing 8 and thereby urges the load arm 14 and the support arm 17 via the articulated connection with the bolt 18 up. The load head 16 moves here along the stroke curve indicated by construction steps, which clearly follows a tilting movement of the motor vehicle.

Dadurch ist gewährleistet, daß trotz der zwangsläufigen Kippbewegung des angehobenen Kraftfahrzeuges der Wagenheber nach wie vor mit seinem vollen Basisteil 1 auf dem Boden aufliegen kann, wodurch eine erheblich günstigere Standfestigkeit als bei den bekannten Ausführungs formen erzielt wird.This ensures that, despite the inevitable tilting movement of the raised motor vehicle, the jack can still rest with its full base part 1 on the floor, which forms a considerably more favorable stability than that of the known design.

Wird nach beendetem Reifenwechseln und dergleichen das Kraftfahrzeug wieder abgesenkt, so braucht man die Gewindespindel nur solange zu betätigen, bis der Lastkopf 16 vom Kraftfahrzeug freikommt. Zieht man nun den Wagenheber unter dem Kraftfahrzeug hervor, so kann man durch leichtes Anheben des Lastarmes 14 diesen mit seinem gabelförmigen Ende von den Bolzen 11 am Mutterstück 10 ausrasten, wodurch der Wagenheber voll zusammengeklappt werden kann, ohne daß hierfür das Mutterstück 10 in seine äußerste Endlage gedreht werden muß. Bei einer neuerlichen Benutzung des Wagenhebers kann dann durch Einhängen des gabelförmigen Endes 15 des Lastarmes 14 sofort die Anfangshöhe, die man für das Kraftfahrzeug benötigt, eingestellt werden.If the motor vehicle is lowered again after the tire change and the like have been completed, the threaded spindle need only be actuated until the load head 16 is released from the motor vehicle. If you now pull the jack out from under the motor vehicle, you can disengage it with its fork-shaped end from the bolts 11 on the nut piece 10 by slightly lifting the load arm 14, as a result of which the jack can be fully folded without the nut piece 10 being in its outermost position End position must be turned. When the jack is used again, the initial height required for the motor vehicle can then be set immediately by hooking in the fork-shaped end 15 of the load arm 14.

Claims (3)

1. A jack for motor vehicles, having a horizonta base part with side walls, between which is arranged a threaded spindle which at one end is supported non-displaceably on the side walls so as to be rotatable by way of a spindle bearing and which at the other end receives a nut member which is guided displaceably in the side walls by way of pins and on which engages one end of a cantilevered work arm which is connected approximately in its centre to a support arm in an articulated manner which is articulated on the base part, characterized in that the base part (1) has a U-shaped cross-section with vertical side walls (2 and 3) in which are provided horizontal, slightly S-shaped guide slots (12) in which the pins (11) or the nut member (10) are guided.
2. A jack according to claim 1, characterized in that the work arm (14) and the support arm (17) are constructed as pressed sheet-metal parts which have U-shaped cross-sections and are adapted to fit one into the other.
3. A jack according to claims 1 and 2, characterized in that the work arm (14) is disengageably supported with its forked end (15) facing the actuating side on the pins (11) of the nut member (10).
EP86106884A 1985-12-18 1986-05-21 Jack for motor vehicles Expired EP0226695B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853544779 DE3544779A1 (en) 1985-12-18 1985-12-18 CAR LIFT FOR MOTOR VEHICLES
DE3544779 1985-12-18

Publications (2)

Publication Number Publication Date
EP0226695A1 EP0226695A1 (en) 1987-07-01
EP0226695B1 true EP0226695B1 (en) 1988-10-12

Family

ID=6288762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106884A Expired EP0226695B1 (en) 1985-12-18 1986-05-21 Jack for motor vehicles

Country Status (2)

Country Link
EP (1) EP0226695B1 (en)
DE (2) DE3544779A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD268229A1 (en) * 1988-01-14 1989-05-24 Suhl Hebezeugwerk JACK
GB8808521D0 (en) * 1988-04-12 1988-05-11 Metallifacture Ltd Vehicle jack
GB2228249A (en) * 1989-02-16 1990-08-22 Metallifacture Ltd Load-lifting jack.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099903A (en) * 1936-10-26 1937-11-23 John A Edeby Lifting apparatus
US2264979A (en) * 1939-08-29 1941-12-02 Vadim S Makaroff Lifting jack
FR1378706A (en) * 1964-01-03 1964-11-13 Metallifacture Ltd Improvements to load lifting cylinders
US3693937A (en) * 1969-01-17 1972-09-26 Aisin Seiki Load lifting mechanism
GB1322426A (en) * 1970-07-03 1973-07-04 Aisin Seiki Load lifting jacks
US3938780A (en) * 1974-02-21 1976-02-17 Hauptman Murray L Automobile chassis jack
JPS6042159B2 (en) * 1978-07-25 1985-09-20 アイシン精機株式会社 Pantograph type jack
DE2851980C2 (en) * 1978-12-01 1982-07-01 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Jack
FR2516492A1 (en) * 1981-11-19 1983-05-20 Rousseau Jean Paul Lifting jack for vehicles - has screw and lazy tone action and curved lower pin guide to ensure equilibrium
GB2114537A (en) * 1982-02-01 1983-08-24 Kenneth Carter Motor vehicle jack

Also Published As

Publication number Publication date
DE3544779C2 (en) 1988-11-03
DE3544779A1 (en) 1987-06-19
DE3660905D1 (en) 1988-11-17
EP0226695A1 (en) 1987-07-01

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