FR2559470A1 - Novel jack. - Google Patents
Novel jack. Download PDFInfo
- Publication number
- FR2559470A1 FR2559470A1 FR8402622A FR8402622A FR2559470A1 FR 2559470 A1 FR2559470 A1 FR 2559470A1 FR 8402622 A FR8402622 A FR 8402622A FR 8402622 A FR8402622 A FR 8402622A FR 2559470 A1 FR2559470 A1 FR 2559470A1
- Authority
- FR
- France
- Prior art keywords
- horizontal
- face
- load
- jack
- oblique
- 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
Links
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
- B66F15/00—Crowbars or levers
-
- 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
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)
Abstract
Description
I1 existe de nombreux systèmes de crics actuellement sur le marché, destinés à soulever des véhicules de tous poids et éventuellement d'autres charges, telles que des palettes. There are many jacking systems currently on the market, intended to lift vehicles of all weights and possibly other loads, such as pallets.
Ces dispositifs connus, bien que parfaitement efficaces, présentent l'inconvenient d'être assez complexes et lourds, ce qui entraîne d'une part un prix de revient relativement élevé et un maniement parfois compliqué. These known devices, although perfectly effective, have the disadvantage of being quite complex and heavy, which leads on the one hand to a relatively high cost price and sometimes complicated handling.
L'invention vise un système de cric extrêmement simple à construire et facile à manoeuvrer, ce qui permet d'en équiper à bon marché tous les véhicules ou autres installations impliquant le soulèvement d'une charge. The invention relates to a jack system which is extremely simple to build and easy to maneuver, which makes it possible to equip all vehicles or other installations inexpensively involving the lifting of a load.
Ce nouveau cric ne fait appel à aucun des systèmes à vérin, vis sans fin ou crémaillere, actuellement connus, et repose uniquement sur la notion de levier. This new jack does not use any of the jack, worm or rack systems currently known, and is based solely on the concept of leverage.
Il se compose d'un parallèlogramme déformable, dont deux cotés sont parallèles au sol et au véhicule à soulever, tandis que les deux autres côtés peuvent prendre des inclinaisons différentes, sous l'action d'un levier de manoeuvre, de sorte que les deux faces horizontales précitées soient plus ou moins écartées l'une de l'autre. It consists of a deformable parallelogram, two sides of which are parallel to the ground and to the vehicle to be lifted, while the other two sides can take different inclinations, under the action of an operating lever, so that both the aforementioned horizontal faces are more or less spaced from one another.
La longueur de ce bras de levier étant très sensiblement supérieure à l'écart entre les deux faces horizontales précitées, l'action à exercer sur ce bras de levier pour écarter les deux faces horizontales est divisee d'autant, ce qui permet, au moyen d'un effort relativement faible exercé sur ce bras de levier, de soulever la face horizontale mobile en l'écartant de la face horizontale reposant sur le sol, et en soulevant en même temps toute charge reposant sur la face horizontale mobile. The length of this lever arm being very substantially greater than the distance between the two aforementioned horizontal faces, the action to be exerted on this lever arm to separate the two horizontal faces is divided by the same amount, which allows, by means of a relatively small force exerted on this lever arm, to raise the movable horizontal face by moving it away from the horizontal face resting on the ground, and at the same time lifting any load resting on the movable horizontal face.
L'ensemble des éléments constituant ce cric est réalisé en éléments mécaniques decoupés et emboutis, et les articulations étant simplement rivetées, la fabrication et le prix de revient de ce dispositif en sont largement améliores par rapport aux dispositifs antérieurs lourds et croûteux. All of the elements constituting this jack are made of cut and stamped mechanical elements, and the joints being simply riveted, the manufacture and the cost price of this device are greatly improved compared to previous heavy and crusty devices.
On va maintenant décrire l'invention plus en détails en se référant au dessin annexé sur lequel
- les figures 1,2 et 3 sont respectivement une vue latérale, une vue de dessus, et une coupe verticale de l'appareil selon l'invention, et les figures 4 et 5 montrent les deux positions extrêmes du dispositif, à l'état replié et déployé respectivement. We will now describe the invention in more detail with reference to the accompanying drawing on which
- Figures 1,2 and 3 are respectively a side view, a top view, and a vertical section of the device according to the invention, and Figures 4 and 5 show the two extreme positions of the device, in the state folded and deployed respectively.
En se référant au dessin, on voit que le dispositif selon l'invention se compose d'un parallélogramme présentant deux côtés horizontaux 1 et 2 réunis par deux côtés obliques 3 et 4, l'ensemble étant articulé autour de rivets 5. Referring to the drawing, it can be seen that the device according to the invention consists of a parallelogram having two horizontal sides 1 and 2 joined by two oblique sides 3 and 4, the assembly being articulated around rivets 5.
Sur le côté oblique 3 est fixé un levier de manoeuvre 6, qui, comme on le vo-it mieux sur la figure 4, présente une longueur tres supérieure a son écart d'avec la face supérieure 2 du dispositif. Pour atteindre cette longueur, on peut soit utiliser un montage télescopique comme représenté, ou tout autre moyen d'assemblage d'éléments prolongateurs entre eux. On the oblique side 3 is fixed an operating lever 6, which, as seen better in Figure 4, has a length much greater than its deviation from the upper face 2 of the device. To reach this length, one can either use a telescopic mounting as shown, or any other means of assembling extension elements between them.
Sur la face supérieure 2 du cric est monté un dispositif se composant d'une part d'un chariot constitué par un cavalier 7, et d'autre part d'un systeme d'adaptation de hauteur constitué par une plaque 38 permettant d'adapter la hauteur du cric l'état replié à l'espace disponible pour le placer sous le véhicule a soulever. On the upper face 2 of the jack is mounted a device consisting on the one hand of a carriage constituted by a jumper 7, and on the other hand of a height adaptation system constituted by a plate 38 making it possible to adapt the height of the jack folded up to the space available to place it under the vehicle to be lifted.
Au repos, le cric se présente comme on le voit sur la figure 4, les faces 1 et 2 étant pratiquement au contact, et le chariot 7 au voisinage de l'articulation du côté 3 avec la plateforme 2. Quand on exerce un effort vers le bas sur le levier 6, comme indiqué par la fleche F1, on releve le côté 3 en déformant le parallélogramme de maniere telle que la face supérieure 2 est éloignée de la face inférieure 1, et dans le même temps le chariot 7 se déplace vers le côté 4 dans le sens de la fleche F2, en roulant sur des galets désignés par 9 sur la figure 3. At rest, the jack presents itself as seen in FIG. 4, the faces 1 and 2 being practically in contact, and the carriage 7 in the vicinity of the articulation on side 3 with the platform 2. When a force is exerted towards the bottom on the lever 6, as indicated by the arrow F1, the side 3 is raised by deforming the parallelogram so that the upper face 2 is distant from the lower face 1, and at the same time the carriage 7 moves towards side 4 in the direction of arrow F2, rolling on rollers designated by 9 in Figure 3.
Quand le chariot 7 butte contre le côté 4, le mécanisme est figé, et le cric reste en équilibre stable, avec la charge qu il supporte, ce qui permet d'effectuer toutes les opérations sur cette charge. When the carriage 7 abuts against the side 4, the mechanism is frozen, and the jack remains in stable equilibrium, with the load which it supports, which makes it possible to carry out all the operations on this load.
L'ensemble se comporte donc comme un levier du premier genre, dont un bras (le levier 6) pivote autour du point d'appui 5, tandis que l'autre bras est constitué par la portion du côté 3 située entre le point de fixation du levier 6 sur ce levier 3, et l'autre articulation 5' avec la plateforme supérieure 2. La longueur du levier 6 étant calculée de manière a représenter un nombre de fois suffisant la longueur du-petit côté du levier, l'effort 9 exercer sur le levier 6 pour soulever la charge supportée par la plateforme 2 est divisée d'autant.Ainsi pour une voiture de taille moyenne, l'effort a exercer sur le levier 6 sera de l'ordre de 30 a 40 kg au maximum, ce qui est la por tée de tout opérateur moyen, et ne dépasse pas les efforts que l'on exerce sur les crics classiques. The assembly therefore behaves like a lever of the first kind, of which one arm (the lever 6) pivots around the fulcrum 5, while the other arm is constituted by the portion of the side 3 situated between the fixing point of the lever 6 on this lever 3, and the other articulation 5 ′ with the upper platform 2. The length of the lever 6 being calculated so as to represent a sufficient number of times the length of the short side of the lever, the force 9 exert on the lever 6 to lift the load supported by the platform 2 is divided by as much. Thus for a medium-sized car, the effort to exert on the lever 6 will be of the order of 30 to 40 kg maximum, which is the range of any average operator, and does not exceed the forces exerted on conventional jacks.
Bien entendu les dimensions des éléments constitutifs du cric et le cric lui-même vont être adaptés aux différentes charges à soulever, qui pourront être elles-mêmes très variables pouvant aller d'une petite voiture jusqu'a des charges plus importantes, que ce soit des véhicules ou des charges différentes telles que des palettes. Of course, the dimensions of the components of the jack and the jack itself will be adapted to the different loads to be lifted, which may themselves be very variable, ranging from a small car to higher loads, whether different vehicles or loads such as pallets.
Les éléments constitutifs du cric pourront être aussi bien en métal embouti, comme indiqué précédemment, qu'en autre matériau, tels que des éléments en matiere plastique composite dont il est connu que la résistance mécanique est du même ordre de grandeur sinon supérieure a celle des éléments métalliques. The components of the jack can be as well in stamped metal, as indicated above, as in other material, such as elements in composite plastic material of which it is known that the mechanical resistance is of the same order of magnitude if not greater than that of metallic elements.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8402622A FR2559470B1 (en) | 1984-02-14 | 1984-02-14 | NEW JACK |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8402622A FR2559470B1 (en) | 1984-02-14 | 1984-02-14 | NEW JACK |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2559470A1 true FR2559470A1 (en) | 1985-08-16 |
FR2559470B1 FR2559470B1 (en) | 1987-03-20 |
Family
ID=9301239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8402622A Expired FR2559470B1 (en) | 1984-02-14 | 1984-02-14 | NEW JACK |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2559470B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2659312A1 (en) * | 1990-03-08 | 1991-09-13 | Fabrication Accessoires Automo | Deformable scissor jack |
GB2405858A (en) * | 2003-09-09 | 2005-03-16 | Ford Global Tech Llc | Scissors jack |
US11834852B2 (en) * | 2020-08-07 | 2023-12-05 | Peri Se | Striking tool and method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1485286A (en) * | 1922-10-23 | 1924-02-26 | William H Overholser | Automobile jack |
FR640431A (en) * | 1926-09-11 | 1928-07-12 | Improvements to jacks and similar tools for motor vehicles or others | |
FR1111845A (en) * | 1954-10-01 | 1956-03-05 | Lifting platform especially intended for cycles, mopeds, motorcycles and scooters | |
US3029065A (en) * | 1960-01-15 | 1962-04-10 | Buddingh Cornelius | Means for moving vehicles |
US3306579A (en) * | 1965-07-26 | 1967-02-28 | Walter H Campbell | Hoisting truck with parallelogram |
GB1176699A (en) * | 1967-11-03 | 1970-01-07 | Lawrence Joseph Canning | Jacks for Raising Road Vehicles. |
FR2249027A1 (en) * | 1973-10-24 | 1975-05-23 | Habrial Gilles | Vehicle lifting device for maintenance work - has wheeled trolley with pivotal lift arm on collapsible parallelogram linkage |
-
1984
- 1984-02-14 FR FR8402622A patent/FR2559470B1/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1485286A (en) * | 1922-10-23 | 1924-02-26 | William H Overholser | Automobile jack |
FR640431A (en) * | 1926-09-11 | 1928-07-12 | Improvements to jacks and similar tools for motor vehicles or others | |
FR1111845A (en) * | 1954-10-01 | 1956-03-05 | Lifting platform especially intended for cycles, mopeds, motorcycles and scooters | |
US3029065A (en) * | 1960-01-15 | 1962-04-10 | Buddingh Cornelius | Means for moving vehicles |
US3306579A (en) * | 1965-07-26 | 1967-02-28 | Walter H Campbell | Hoisting truck with parallelogram |
GB1176699A (en) * | 1967-11-03 | 1970-01-07 | Lawrence Joseph Canning | Jacks for Raising Road Vehicles. |
FR2249027A1 (en) * | 1973-10-24 | 1975-05-23 | Habrial Gilles | Vehicle lifting device for maintenance work - has wheeled trolley with pivotal lift arm on collapsible parallelogram linkage |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2659312A1 (en) * | 1990-03-08 | 1991-09-13 | Fabrication Accessoires Automo | Deformable scissor jack |
GB2405858A (en) * | 2003-09-09 | 2005-03-16 | Ford Global Tech Llc | Scissors jack |
US11834852B2 (en) * | 2020-08-07 | 2023-12-05 | Peri Se | Striking tool and method |
Also Published As
Publication number | Publication date |
---|---|
FR2559470B1 (en) | 1987-03-20 |
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Legal Events
Date | Code | Title | Description |
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ST | Notification of lapse |