FR2534238A1 - Articulated scissor jack. - Google Patents
Articulated scissor jack. Download PDFInfo
- Publication number
- FR2534238A1 FR2534238A1 FR8217062A FR8217062A FR2534238A1 FR 2534238 A1 FR2534238 A1 FR 2534238A1 FR 8217062 A FR8217062 A FR 8217062A FR 8217062 A FR8217062 A FR 8217062A FR 2534238 A1 FR2534238 A1 FR 2534238A1
- Authority
- FR
- France
- Prior art keywords
- arms
- jack
- partitions
- synthetic material
- 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.)
- Granted
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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
Abstract
Description
Cric à losange articulé.Hinged diamond jack.
La présente invention se rapporte à un cric du type à "losange articulé", notamment destiné au levage de véhicules automobiles.The present invention relates to a jack of the "articulated rhombus" type, in particular intended for lifting motor vehicles.
On connaît déjà des crics de ce type, relativement lourds car constitués par un nombre important d'éléments métalliques tels que bras généralement surdimensionnés pour éviter leur flambage, chapes, rondelles destinées à réduire les frottements entre les éléments précédents, etc.Jacks of this type are already known, relatively heavy because they consist of a large number of metallic elements such as arms generally oversized to avoid buckling, yokes, washers intended to reduce friction between the preceding elements, etc.
Le cric selon la présente invention pallie les inconvénients cidessus, étant remarquable notamment par sa légèreté, la diminution du nombre de pièces constitutives, la facilité et la grande cadence de fabrication des éléments constitutifs principaux, ainsi que par la diminution considérable des frottements entre ces derniers
L'invention sera décrite à titre d'exemple non limitatif au regard des figures i à 9 ci-jointes qui se rapportent respectivement - la figure i : à une vue du cric en perspective éclatée - la figure 2 : à une coupe longitudinale d'un des deux bras
mâles constituants du cric - la figure 3 : à une vue en plan du même type de bras - la figure 4 : à une coupe longitudinale d'un des deux bras
femelles - la figure 5 : à une vue en plan du même type de bras - la figure 6 : à une coupe AA transversale de la figure 2 - la figure 7 : à une coupe BB transversale de la figure 2 - la figure 8 : à une coupe BB transversale de la figure 4 - la figure 9 : à une coupe AA transversale de la figure 4.The jack according to the present invention overcomes the above drawbacks, being remarkable in particular by its lightness, the reduction in the number of constituent parts, the ease and the high rate of manufacture of the main constituent elements, as well as by the considerable reduction in friction between them.
The invention will be described by way of non-limiting example with regard to Figures i to 9 attached which relate respectively - Figure i: an exploded perspective view of the jack - Figure 2: a longitudinal section of one of the two arms
male components of the jack - Figure 3: in a plan view of the same type of arm - Figure 4: in a longitudinal section of one of the two arms
females - Figure 5: a plan view of the same type of arm - Figure 6: a cross section AA of Figure 2 - Figure 7: a cross section BB of Figure 2 - Figure 8: a cross section BB of Figure 4 - Figure 9: a cross section AA of Figure 4.
En référence à la figure 1, on voit que le cric selon l'invention est essentiellement constitué de deux bras mâles 1 et de deux bras femelles 2, agencés suivant un parallélogramme dont la déformation est provoquée par la rotation d'une vis de commande 3 coopérant de façon connue avec une noix 4 fixée à l'un des sommets latéraux et dont le canal central est fileté, tandis que l'extrémité opposée de la vis 3 est solidarisée à l'autre sommet latéral du parallélogramme toutefois de façon à pouvoir tourner librement.With reference to FIG. 1, it can be seen that the jack according to the invention essentially consists of two male arms 1 and two female arms 2, arranged in a parallelogram whose deformation is caused by the rotation of a control screw 3 cooperating in a known manner with a nut 4 fixed to one of the lateral vertices and the central channel of which is threaded, while the opposite end of the screw 3 is secured to the other lateral vertex of the parallelogram, however so as to be able to rotate freely.
Les sommets supérieur et inférieur du parallélogramme sont cons titués respectivement par une tête de levage 5 et un socle 6 reliés aux bras supérieur 2 et inférieur 1. On constate donc que par action sur le mécanisme commandant la rotation de la vis 3 dans la noix 4, on fait bien varier la distance séparant les sommets inférieur et supérieur
Les bras I et 2, visibles en coupe aux figures 2 et 4, sont obtenus par moulage par injection de matière synthétique, préférentiellement thermoplastiques.The upper and lower vertices of the parallelogram are constituted respectively by a lifting head 5 and a base 6 connected to the upper 2 and lower arms 1. It can therefore be seen that by acting on the mechanism controlling the rotation of the screw 3 in the nut 4 , we vary the distance between the upper and lower vertices
The arms I and 2, visible in section in FIGS. 2 and 4, are obtained by injection molding of synthetic material, preferably thermoplastics.
Leur structure comporte un plan central horizontal 20, 40, de part et d'autre duquel sont conformées des alvéoles 21- 41 et 2242. On remarquera que les cloisons transversales 23 - 24 et 43 -44 sont décalées entre elles d'une quantité voisine de leur épaisseur. Les cloisons longitudinales extérieures 26 - 46 sont alignées.Their structure has a horizontal central plane 20, 40, on either side of which are formed cells 21- 41 and 2242. It will be noted that the transverse partitions 23 - 24 and 43 -44 are offset between them by a similar amount of their thickness. The outer longitudinal partitions 26 - 46 are aligned.
De plus, comme on le voit aux figures 6 et 8, les alvéoles 21-22 et 41-42 sont distribuées de part et d'autre d'une cloison centrale 25 - 45, donnant ainsi aux bras 1 - 2 une- coupe en forme de double H. Cette structure des bras confère à ces derniers une grande rigidité évitant ainsi tout risque de torsion, en particulier lorsque les cloisons centrales 25- - 45 sont déportées d'un côté ou de l'autre de façon à enlever toute symétrie à la coupe des bras 1 - 2.In addition, as can be seen in FIGS. 6 and 8, the cells 21-22 and 41-42 are distributed on either side of a central partition 25 - 45, thus giving the arms 1 - 2 a cross-section. double H shape. This structure of the arms gives them great rigidity, thus avoiding any risk of twisting, in particular when the central partitions 25- - 45 are offset to one side or the other so as to remove any symmetry. cutting arms 1 - 2.
Les extrémités des bras coopérant entre eux au niveau de la tête de levage 5 et du socle 6 comportent des dentures complémentaires 7 - 8 venues de moulage avec eux et disposées sur toute la largeur des bras, contrairement à ce qui est généralement le cas avec les crics métalliques. De cette grande surface d'appui découlent des avantages correspondant à un meilleur support des charges.The ends of the arms cooperating with each other at the level of the lifting head 5 and of the base 6 have complementary teeth 7 - 8 molded in with them and arranged over the entire width of the arms, contrary to what is generally the case with the metal jacks. This large bearing surface gives rise to advantages corresponding to better load support.
Le socle 6, lui aussi obtenu par injection de matière synthétique, peut comporter des nervures lui assurant une excellente rigidité, tout en conservant une certaine souplesse fonctionnelle inhérente aux matières plastiques employées, permettant l'absorption du débattement transversal résultant de sa mise en oeuvre, ainsi que d'éventuelles déformations du sol.The base 6, also obtained by injection of synthetic material, may include ribs providing it with excellent rigidity, while retaining a certain functional flexibility inherent in the plastics used, allowing absorption of the transverse clearance resulting from its use, as well as possible deformations of the soil.
D'autres éléments tels que les tourillons 9 et éventuellement la tête de levage peuvent aussi être faits en matière synthétique, ce qui présente comme avantage, en particulier pour les tourillons 9, d'éviter tout risque de grippage avec la vis en acier 3.Other elements such as the pins 9 and possibly the lifting head can also be made of synthetic material, which has the advantage, in particular for the pins 9, of avoiding any risk of seizing up with the steel screw 3.
Toutes les pièces en matière synthétique évoquées précédemment sont obtenues à cadence élevée, simultanément en grand nombre, et surtout n'impliquent aucune opération complémentaire telle qu'usinage, découpage, soudage etc., comme.c > est le cas pour les pièces analogues en métal, qui de plus sont sensiblement plus lourdes. All the plastic parts mentioned above are obtained at a high rate, simultaneously in large numbers, and above all do not involve any additional operation such as machining, cutting, welding, etc., as is the case for similar parts in metal, which in addition are significantly heavier.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8217062A FR2534238A1 (en) | 1982-10-12 | 1982-10-12 | Articulated scissor jack. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8217062A FR2534238A1 (en) | 1982-10-12 | 1982-10-12 | Articulated scissor jack. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2534238A1 true FR2534238A1 (en) | 1984-04-13 |
FR2534238B1 FR2534238B1 (en) | 1985-02-01 |
Family
ID=9278188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8217062A Granted FR2534238A1 (en) | 1982-10-12 | 1982-10-12 | Articulated scissor jack. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2534238A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993000287A1 (en) * | 1991-06-28 | 1993-01-07 | Norsk Hydro A.S | Pantograph jack apparatus |
FR2686869A1 (en) * | 1992-02-05 | 1993-08-06 | Landion Marc | Jack for lifting a motor vehicle |
US5261644A (en) * | 1992-10-08 | 1993-11-16 | Seeburn Metal Products Limited | Plastic jack |
WO1997032763A1 (en) * | 1996-03-06 | 1997-09-12 | Innovation Plus Limited | Lift jack for wheeled vehicle |
ITUA20161383A1 (en) * | 2016-03-04 | 2017-09-04 | Brasola S R L | LIFT FOR VEHICLES. |
EP3511286A4 (en) * | 2017-01-24 | 2019-08-28 | LG Chem, Ltd. | Vehicle jacking-up device |
CZ309319B6 (en) * | 2011-05-18 | 2022-08-24 | Brano A.S. | Scissor lift, especially automotive |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1369186A (en) * | 1973-06-15 | 1974-10-02 | Aisin Seiki | Load-lifting jacks |
US3857548A (en) * | 1973-06-28 | 1974-12-31 | T Takeuchi | Pantograph-type jack |
AU506155B2 (en) * | 1976-11-10 | 1979-12-13 | W. H. Whyne & Co. Pty. Ltd | Arms-scissors jack |
GB2070560A (en) * | 1980-02-26 | 1981-09-09 | Bilstein August | Vehicle lifting jack |
-
1982
- 1982-10-12 FR FR8217062A patent/FR2534238A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1369186A (en) * | 1973-06-15 | 1974-10-02 | Aisin Seiki | Load-lifting jacks |
US3857548A (en) * | 1973-06-28 | 1974-12-31 | T Takeuchi | Pantograph-type jack |
AU506155B2 (en) * | 1976-11-10 | 1979-12-13 | W. H. Whyne & Co. Pty. Ltd | Arms-scissors jack |
GB2070560A (en) * | 1980-02-26 | 1981-09-09 | Bilstein August | Vehicle lifting jack |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993000287A1 (en) * | 1991-06-28 | 1993-01-07 | Norsk Hydro A.S | Pantograph jack apparatus |
FR2686869A1 (en) * | 1992-02-05 | 1993-08-06 | Landion Marc | Jack for lifting a motor vehicle |
US5261644A (en) * | 1992-10-08 | 1993-11-16 | Seeburn Metal Products Limited | Plastic jack |
WO1997032763A1 (en) * | 1996-03-06 | 1997-09-12 | Innovation Plus Limited | Lift jack for wheeled vehicle |
CZ309319B6 (en) * | 2011-05-18 | 2022-08-24 | Brano A.S. | Scissor lift, especially automotive |
ITUA20161383A1 (en) * | 2016-03-04 | 2017-09-04 | Brasola S R L | LIFT FOR VEHICLES. |
WO2017149504A1 (en) * | 2016-03-04 | 2017-09-08 | Brasola S.R.L. | Car jack |
CN108883920A (en) * | 2016-03-04 | 2018-11-23 | 奥佩纳克西斯有限公司 | Car jack |
EP3511286A4 (en) * | 2017-01-24 | 2019-08-28 | LG Chem, Ltd. | Vehicle jacking-up device |
US11111118B2 (en) | 2017-01-24 | 2021-09-07 | Lg Chem, Ltd. | Vehicle jack device |
Also Published As
Publication number | Publication date |
---|---|
FR2534238B1 (en) | 1985-02-01 |
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