EP0620181A1 - Cric compact - Google Patents
Cric compact Download PDFInfo
- Publication number
- EP0620181A1 EP0620181A1 EP93106024A EP93106024A EP0620181A1 EP 0620181 A1 EP0620181 A1 EP 0620181A1 EP 93106024 A EP93106024 A EP 93106024A EP 93106024 A EP93106024 A EP 93106024A EP 0620181 A1 EP0620181 A1 EP 0620181A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jack
- screw
- arms
- actuation
- jack according
- 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.)
- Withdrawn
Links
Images
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 compact jack, particularly to be used for lifting motor vehicles.
- the aim of the invention is to substantially eliminate this drawback by providing a jack which is extremely compact and at the same time sturdy and reliable in operation.
- an object of the present invention is to provide a compact jack in which actuation is facilitated, in that it can be opened and closed, while the weight of the vehicle bears on it, with a minimal effort and which, at the same time, ensures a condition of perfect stability and balance of the lifted motor vehicle, during both lifting and lowering.
- Another object of the present invention is to provide a compact jack which can be easily adapted for automatic actuation.
- Another object of the present invention is to provide a jack which is extremely competitive from a purely economical point of view.
- Another object of the present invention is to provide a jack which can be easily manufactured starting from commonly commercially available elements and materials.
- the jack of this embodiment of the invention has been generally designated by the reference numeral 1.
- Said jack is substantially of the pantograph type and comprises four mutually articulated arms designated by the reference numerals 2, 3, 4 and 5.
- the arms 3 and 4 are articulated at one of their ends by pivot means 6, and the arms 2 and 5 are articulated at one of their ends by an articulation pivot 7.
- the arm 3 is articulated to the arm 2 by means of the pivot 8 and the arm 4 is articulated to the arm 5 by means of the pivot 9; the described arms are conventionally obtained for example by pressing metallic material in sheet form.
- the two pairs of arms 3-4 and 2-5 are mutually joined, at a respective end, by means of a screw-like actuation element 10 which is rotatably actuated, in a conventional manner, in both directions by means of a substantially L-shaped actuation crank 11.
- the arm 5 is rigidly coupled, in a downward region, with a plate-like element 12 for resting on the ground, which has grip studs 14, whereas the arm 2 is rigidly coupled to a block 15 which is positionable for abutment against the underside of the floor pan or support member of a motor vehicle (not shown) to lift it and/or lower it.
- the described jack is substantially conventional.
- a reduction unit is interposed between the actuation handle 11 and the screw-like actuation element 10; in particular, said unit 16 may be of any known type, for example of the type with gears or with a toothed belt and toothed sprockets for actuation, as schematically shown in figure 1 by dashed lines.
- the arm 5 is pivoted at 17 to the plate-like element 12 for resting on the ground; this pivoting facilitates the jack in assuming a position of substantially stable equilibrium when the motor vehicle is lifted and lowered.
- the jack according to this embodiment is shown in its closed position, with the handle still extracted, whereas in figure 4 the handle 11 has been folded against the jack body by rotating said handle about its articulation point 20. It can be seen, especially from figures 2 and 4, that the jack is extremely compact.
- the reduction unit 16 is also structurally extremely simple and that it can be easily adapted to the jack body by virtue of any convenient coupling means.
- a direct-current motor 21 has been provided for instead of the actuation handle 11; said motor is powered by the motor vehicle battery (not shown) by means of a power supply cable 22 which is shown in a cutout view; the coupling between the motor 21 and the reduction unit 16 may be of the removable plug-in type and can in any case be obtained by virtue of any coupling means known to the expert in the field.
- said figures show a second embodiment of the jack according to the invention, which is also of the pantograph type with articulated arms; said jack is again generally designated by the reference numeral 1.
- This embodiment differs substantially from the preceding embodiment in that although the respective ends of the arms 2', 3', 4' and 5' are articulated so that they can oscillate by means of pivots 6' and 7', the other respective ends of said arms are mutually engaged, so that they can oscillate, by means of a substantially "toothed" profile.
- Figure 5 also shows that the two arms 4' and 5' are substantially rotatably articulated, at 17' and 17'', to the usual plate-like element 12' for resting on the ground.
- the reduction unit generally designated by the reference numeral 16', has been applied to this jack configuration as well; as in the case of the previous embodiment, it can be of the type with gears or with a toothed belt and toothed sprockets, which can also be actuated manually, by means of the handle 11', or by means of a motor which is not specifically shown herein.
- Figure 7 is a detail view of the two lower arms 4' and 5', which are substantially C-shaped and the lower profiles of which have reinforced teeth.
- the jack according to this embodiment which is shown in its active or open position, clearly shows the oscillated but substantially balanced position assumed by the jack, which is loaded in the direction indicated by the arrow by the motor vehicle, which is not shown; this position can be easily assumed by virtue of the articulated or jointed top and base connection of the jack body.
- the jack according to this embodiment of the invention is also capable of ensuring a position of absolutely stable equilibrium during all steps of the lifting and lowering of the motor vehicle.
- the jack substantially comprises a jack body constituted by two arms which are made of sheet metal, are also for example generally C-shaped, and are respectively designated by the reference numerals 200 and 500.
- the two arms 200 and 500 are mutually rotatably articulated at 900; they are also mutually connected by means of a screw-like actuation element 1000, an end of which is coupled to the reduction unit 1600 which again constitutes a peculiar aspect of the invention.
- the free end of the arm 200 is rotatably coupled to the block 150 which is provided for engagement with the lower surface of the floor pan of the motor vehicle, whereas the lower end of the arm 500 is oscillatably coupled at 170, to the plate-like element 120 for resting on the ground.
- the actuation crank 110 is provided for the actuation of the reduction unit 1600.
- said jack has been further improved by providing improved means for coupling between the actuation screw 1000 and the arm 200 of the jack.
- the arm 200 which is substantially C-shaped, comprises a slot 220 which is provided so that it can be crossed by the screw 1000 during the extension of the jack.
- the left end of the actuation screw 1000 (as shown in figures 10 and 12), i.e. the end which is not coupled to the actuation assembly-reduction unit 1600, is rotatably engaged in a nut-like block 190 which is provided with an internal thread 191 and can be engaged in a removable manner in two holes 192 and 193 which are respectively formed in the walls of the substantially C-shaped arm 200.
- Said holes 192 and 193 are advantageously provided with portions folded so as to form flaps 194 and 195 respectively for the removable locking of the block 190 to the arm 200; said locking is completed by applying two external plug-like closure elements, respectively 198 and 199, to the block, as more clearly shown in figure 12.
- the actuation screw 1000 can be locked in an extremely reliable manner to the arm 200, and the actuation movement of the screw 1000 can be easily obtained by virtue of the crank 110, or of the electric motor, if desired, ensuring in any condition the virtually complete elimination of flexural stresses on said screw, by virtue of the locking assembly in which it is engaged, thus substantially improving the operating reliability and the sturdiness of this embodiment of the jack.
- the jack In figure 11, the jack is shown in its active position, with its lower and upper ends swung into a position of extremely stable equilibrium, whereas in figures 13 and 14 the jack is shown in its folded position, and figure 14 in particular, in which the lever 110 has been folded against the jack body, shows that the jack has an extremely compact configuration in this case as well.
- the elements for mutually coupling the various elements that constitute the invention, as well as the contingent shapes and dimensions, may be any according to the requirements.
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93106024A EP0620181A1 (fr) | 1993-04-14 | 1993-04-14 | Cric compact |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93106024A EP0620181A1 (fr) | 1993-04-14 | 1993-04-14 | Cric compact |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0620181A1 true EP0620181A1 (fr) | 1994-10-19 |
Family
ID=8212810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93106024A Withdrawn EP0620181A1 (fr) | 1993-04-14 | 1993-04-14 | Cric compact |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0620181A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007000228A1 (fr) * | 2005-06-24 | 2007-01-04 | Thyssenkrupp Bilstein Wagenheber Gmbh | Cric |
EP1878690A1 (fr) * | 2006-07-10 | 2008-01-16 | Rikenkaki Kogyo Kabushiki Kaisha | Cric à parallélogramme articulé |
DE102016002096A1 (de) | 2016-02-20 | 2017-08-24 | Fes Gmbh Fahrzeug-Entwicklung Sachsen | Wagenheber |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR482833A (fr) * | 1916-09-12 | 1917-04-27 | Georges Bennet Hurlburt | Cric |
US3347523A (en) * | 1965-10-23 | 1967-10-17 | Sumco Mfg Company Inc | Scissors jack |
GB1453421A (en) * | 1974-05-08 | 1976-10-20 | Aisin Seiki | Load lifting jacks |
FR2323627A1 (fr) * | 1975-09-12 | 1977-04-08 | Rousseau Ets | Cric a losange articule |
GB2134075A (en) * | 1983-01-25 | 1984-08-08 | Gerdes Gmbh | Vehicle jack |
EP0288410A1 (fr) * | 1987-04-24 | 1988-10-26 | Wagnon Power Jack, Inc. | Cric à moteur et procédé pour faire fonctionner celui-ci |
EP0295128A1 (fr) * | 1987-06-12 | 1988-12-14 | Metallifacture Limited | Crics |
US4872230A (en) * | 1988-04-25 | 1989-10-10 | Anthony Levine | Electrically powered automobile jack and nut remover |
US4919392A (en) * | 1988-12-05 | 1990-04-24 | Minuto Paul G | Vehicle jack |
-
1993
- 1993-04-14 EP EP93106024A patent/EP0620181A1/fr not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR482833A (fr) * | 1916-09-12 | 1917-04-27 | Georges Bennet Hurlburt | Cric |
US3347523A (en) * | 1965-10-23 | 1967-10-17 | Sumco Mfg Company Inc | Scissors jack |
GB1453421A (en) * | 1974-05-08 | 1976-10-20 | Aisin Seiki | Load lifting jacks |
FR2323627A1 (fr) * | 1975-09-12 | 1977-04-08 | Rousseau Ets | Cric a losange articule |
GB2134075A (en) * | 1983-01-25 | 1984-08-08 | Gerdes Gmbh | Vehicle jack |
EP0288410A1 (fr) * | 1987-04-24 | 1988-10-26 | Wagnon Power Jack, Inc. | Cric à moteur et procédé pour faire fonctionner celui-ci |
EP0295128A1 (fr) * | 1987-06-12 | 1988-12-14 | Metallifacture Limited | Crics |
US4872230A (en) * | 1988-04-25 | 1989-10-10 | Anthony Levine | Electrically powered automobile jack and nut remover |
US4919392A (en) * | 1988-12-05 | 1990-04-24 | Minuto Paul G | Vehicle jack |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007000228A1 (fr) * | 2005-06-24 | 2007-01-04 | Thyssenkrupp Bilstein Wagenheber Gmbh | Cric |
DE102005029320A1 (de) * | 2005-06-24 | 2007-01-04 | Thyssenkrupp Bilstein Wagenheber Gmbh | Wagenheber |
DE102005029320B4 (de) * | 2005-06-24 | 2008-12-24 | Brano Wagenheber Gmbh | Wagenheber |
EP1878690A1 (fr) * | 2006-07-10 | 2008-01-16 | Rikenkaki Kogyo Kabushiki Kaisha | Cric à parallélogramme articulé |
DE102016002096A1 (de) | 2016-02-20 | 2017-08-24 | Fes Gmbh Fahrzeug-Entwicklung Sachsen | Wagenheber |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB PT |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19950420 |