FR2558817A1 - Improvements to systems for driving the screws of scissor jacks. - Google Patents
Improvements to systems for driving the screws of scissor jacks. Download PDFInfo
- Publication number
- FR2558817A1 FR2558817A1 FR8401206A FR8401206A FR2558817A1 FR 2558817 A1 FR2558817 A1 FR 2558817A1 FR 8401206 A FR8401206 A FR 8401206A FR 8401206 A FR8401206 A FR 8401206A FR 2558817 A1 FR2558817 A1 FR 2558817A1
- Authority
- FR
- France
- Prior art keywords
- crank
- axis
- screw
- driver
- screws
- 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
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
La présente invention a pour but l'amélioration du mouvement d'entraînement en rotation de la vis d'un cric losange. The present invention aims to improve the rotational driving movement of the screw of a diamond jack.
La manoeuvre d'un cric losange destiné à soulever un véhicule par un côté nécessite une manivelle dont l'axe de rotation doit pouvoir orendre une certaine inclinaison par rapport à l'axe de la vis du cric qui est située généralement assez près du sol. The operation of a diamond jack intended to lift a vehicle from one side requires a crank, the axis of rotation of which must be able to cause a certain inclination relative to the axis of the jack screw which is generally located fairly close to the ground.
Pour cette dernière raison, et afin d'améliorer la position de l'opérateur pendant la manoeuvre, il est souhaitable que l'axe de la manivelle puisse faire le plus grand angle possible avec l'axe de la vis sans gêner la régularité du mouvement de rotation. For the latter reason, and in order to improve the position of the operator during the maneuver, it is desirable that the axis of the crank can make the greatest possible angle with the axis of the screw without interfering with the regularity of the movement. of rotation.
Les dispositifs d'entraînement connus, tels que des entraîneurs en forme de chape ou en forme d'oeil avec manivelle en crochet, ne peuvent fonctionner correctement que sous des angles relativement faibles, inférieurs à 17 environ, au-delà desquels il se produit des saccades, voire même un blocage du mouvement. Known drive devices, such as yoke or eye-shaped trainers with hooked crank, can only work properly at relatively small angles, less than about 17, beyond which jerks, or even a blockage of movement.
En conséquence, l'invention a pour objet de realiser un ensemble entraîneur - manivelle de fabrication économique, l'axe de la manivelle pouvant avoir un angle variable de 0 à 350 par rapport à l'axe de la vis et étant soumis à la régularité du mouvement de rotation. Consequently, the object of the invention is to produce a coach-crank assembly of economical manufacture, the axis of the crank being able to have a variable angle from 0 to 350 relative to the axis of the screw and being subject to regularity. of the rotational movement.
Sur les dessins annexés:
La figure 1 est une vue d'ensemble représentant un cric losange posé sur le sol ZZ' avec la manivelle engagée dans l'entraîneur et dont l'axe de rotation XX' fait avec l'axe de la vis
YY' un angle de 350. In the accompanying drawings:
Figure 1 is an overview showing a diamond jack placed on the ground ZZ 'with the crank engaged in the driver and whose axis of rotation XX' made with the axis of the screw
YY 'an angle of 350.
La figure 2 est une vue du dessus de la figure 1. Figure 2 is a top view of Figure 1.
La figure 3 est une vue analogue à la figure 2 mais montrant la mise en place de la manivelle. Figure 3 is a view similar to Figure 2 but showing the establishment of the crank.
La figure 4 est une vue partielle montrant l'entraineur dans lequel est engagée l'extrémité de la manivelle. Figure 4 is a partial view showing the coach in which is engaged the end of the crank.
La figure 5 est une coupe par l'axe V - V de la figure 4. FIG. 5 is a section through the axis V - V of FIG. 4.
La figure 6 est une vue de dessus de l'entraîneur seul, la manivelle n'étant par représentée. Figure 6 is a top view of the coach alone, the crank is not shown.
La figure 7 est une vue en coupe analogue à la figure 5 mais avec la manivelle représentée en position d'introduction. Figure 7 is a sectional view similar to Figure 5 but with the crank shown in the insertion position.
Sur les figures 1 à 4, on voit un cric classique 1 qui repose en 2 sur un plan horizontal ZZ', sa vis de manoeuvre 3 dont l'axe YY' est sensiblement parallèle au plan ZZ', sa mani velle 4 dont l'axe de rotation XX' fait un angle variable suivant les besoins, de 0 à 350, par rapport à l'axe de la vis de manoeuvre 3, et un- entraîneur 5 comprenant deux lumières 5a opposées et deux parties pleines 5b opposées dont l'une est soudée en 6 à la vis de manoeuvre 3. In Figures 1 to 4, we see a conventional jack 1 which rests in 2 on a horizontal plane ZZ ', its operating screw 3 whose axis YY' is substantially parallel to the plane ZZ ', its crank 4 whose axis of rotation XX 'makes a variable angle as required, from 0 to 350, with respect to the axis of the operating screw 3, and a- driver 5 comprising two opposite slots 5a and two opposite solid parts 5b, the one is welded in 6 to the operating screw 3.
Sur la figure 5, on voit l'extrémité de la manivelle 4 verrouillée à l'intérieur de l'entraîneur 5 par une partie renflée 4a retenue par les bords des ouvertures 5a de l'entraîneur situés dans le sens le plus étroit. In Figure 5, we see the end of the crank 4 locked inside the driver 5 by a bulged portion 4a retained by the edges of the openings 5a of the coach located in the narrowest direction.
Sur la figure 6, on voit l'entraîneur 5 et la forme oblogue des ouvertures 5a, dont la largeur dans le-sens transversal ne permet que le passage de la tige de la manivelle 4 (non représentée) et dont la longueur dans le sens longitudinal autorise le mouvement oscillant alternatif de la manivelle, qui résulte de sa rotation autour de l'-axe XX', sous des angles quelconques compris entre O et 350
Sur la figure 7, on voit la manivelle 4 tournée de 900 par rapport à la figure 5, en position d'introduction, la partie renflée 4a se présentant dans le sens le plus large des ouvertures 5a de l'entraîneur 5 et pouvant ainsi passer librement.In Figure 6, we see the driver 5 and the oblog shape of the openings 5a, whose width in the transverse direction only allows the passage of the rod of the crank 4 (not shown) and whose length in the direction longitudinal allows the reciprocating oscillating movement of the crank, which results from its rotation around the axis XX ', at any angles between 0 and 350
In FIG. 7, we see the crank 4 turned by 900 with respect to FIG. 5, in the insertion position, the bulged part 4a being in the widest direction of the openings 5a of the driver 5 and thus able to pass freely.
Le fonctionnement de l'appareil est le suivant
Lorsque le cric 1 est positionné dans son ancrage sur le véhicule, il suffit de pré-orienter l'entraîneur 5 de manière que les lumières 5a se trouvent dans une position favorable à l'insertion de la manivelle 4 (voir figure 3). On place ensuite la manivelle comme le montre la figure 2.The operation of the device is as follows
When the jack 1 is positioned in its anchorage on the vehicle, it suffices to pre-orient the trainer 5 so that the lights 5a are in a position favorable to the insertion of the crank 4 (see FIG. 3). Then place the crank as shown in Figure 2.
I1 est alors possible de manoeuvrer les pièces 1 à 3 du cric par l'intermédiaire de la manivelle 4, qui est actionnee en rotation sous n'importe quel angle entre l'axe XX' et l'axe
YY'. Cette manoeuvre ne peut être entravée par un désaccouplement intempestif, car la partie renflée 4a de la manivelle 4 offre une sécurité qui provient du verrouillage de la manivelle sur l'entraîneur 5. La liaison entre la vis 3 et l'entraîneur 5 est réalisée par un moyen quelconque connu, par exemple par soudure, par vissage ou par brasage. I1 is then possible to operate the parts 1 to 3 of the jack via the crank 4, which is rotated at any angle between the axis XX 'and the axis
YY '. This maneuver cannot be hindered by an inadvertent uncoupling, because the bulged part 4a of the crank 4 offers security which comes from the locking of the crank on the driver 5. The connection between the screw 3 and the coach 5 is carried out by any known means, for example by welding, by screwing or by brazing.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8401206A FR2558817B1 (en) | 1984-01-26 | 1984-01-26 | IMPROVEMENT IN LOSANGES JACK SCREW DRIVE SYSTEMS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8401206A FR2558817B1 (en) | 1984-01-26 | 1984-01-26 | IMPROVEMENT IN LOSANGES JACK SCREW DRIVE SYSTEMS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2558817A1 true FR2558817A1 (en) | 1985-08-02 |
FR2558817B1 FR2558817B1 (en) | 1987-04-24 |
Family
ID=9300504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8401206A Expired FR2558817B1 (en) | 1984-01-26 | 1984-01-26 | IMPROVEMENT IN LOSANGES JACK SCREW DRIVE SYSTEMS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2558817B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0321164A1 (en) * | 1987-12-17 | 1989-06-21 | Metallifacture Limited | Vehicle jack |
FR2635097A1 (en) * | 1988-08-02 | 1990-02-09 | Takraf Schwermasch | Crank for jack, particularly for jack with crossed levers. |
FR2686870A1 (en) * | 1992-02-05 | 1993-08-06 | Landion Marc | Jack for motor vehicle |
EP0623548A1 (en) * | 1993-05-03 | 1994-11-09 | Batz, S. Coop. Ltda. | Winding Handle for car Jack |
CN103979451A (en) * | 2014-05-23 | 2014-08-13 | 宁波天益齿轴齿轮有限公司 | Coiling type lifting jack |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR605511A (en) * | 1925-09-25 | 1926-05-28 | Lifting device for motor vehicles or other applications | |
FR622607A (en) * | 1927-06-02 | |||
US2479362A (en) * | 1945-12-22 | 1949-08-16 | Jackson Wilbur | Jack |
US2508934A (en) * | 1946-03-14 | 1950-05-23 | Arthur A Berg | Lifting jack |
US2557465A (en) * | 1945-08-31 | 1951-06-19 | Sr Joseph C Rauscher | Portable lifting jack |
FR997547A (en) * | 1949-09-21 | 1952-01-07 | Consortium D Inv S Nouvelles R | Jacks development |
FR2273752A1 (en) * | 1974-06-07 | 1976-01-02 | Bilstein August | JACK FOR MOTOR VEHICLES |
DE2453260A1 (en) * | 1974-11-09 | 1976-05-13 | Teves Gmbh Alfred | Lever-type jack used on vehicles - has a pivoting lifting arm raised by a screwed spindle working in a tilting component |
GB2030107A (en) * | 1978-09-27 | 1980-04-02 | Takraf Schwermasch | Coupling between a mechanical lifting jack and operating handle |
-
1984
- 1984-01-26 FR FR8401206A patent/FR2558817B1/en not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR622607A (en) * | 1927-06-02 | |||
FR605511A (en) * | 1925-09-25 | 1926-05-28 | Lifting device for motor vehicles or other applications | |
US2557465A (en) * | 1945-08-31 | 1951-06-19 | Sr Joseph C Rauscher | Portable lifting jack |
US2479362A (en) * | 1945-12-22 | 1949-08-16 | Jackson Wilbur | Jack |
US2508934A (en) * | 1946-03-14 | 1950-05-23 | Arthur A Berg | Lifting jack |
FR997547A (en) * | 1949-09-21 | 1952-01-07 | Consortium D Inv S Nouvelles R | Jacks development |
FR2273752A1 (en) * | 1974-06-07 | 1976-01-02 | Bilstein August | JACK FOR MOTOR VEHICLES |
DE2453260A1 (en) * | 1974-11-09 | 1976-05-13 | Teves Gmbh Alfred | Lever-type jack used on vehicles - has a pivoting lifting arm raised by a screwed spindle working in a tilting component |
GB2030107A (en) * | 1978-09-27 | 1980-04-02 | Takraf Schwermasch | Coupling between a mechanical lifting jack and operating handle |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0321164A1 (en) * | 1987-12-17 | 1989-06-21 | Metallifacture Limited | Vehicle jack |
FR2635097A1 (en) * | 1988-08-02 | 1990-02-09 | Takraf Schwermasch | Crank for jack, particularly for jack with crossed levers. |
FR2686870A1 (en) * | 1992-02-05 | 1993-08-06 | Landion Marc | Jack for motor vehicle |
EP0623548A1 (en) * | 1993-05-03 | 1994-11-09 | Batz, S. Coop. Ltda. | Winding Handle for car Jack |
CN103979451A (en) * | 2014-05-23 | 2014-08-13 | 宁波天益齿轴齿轮有限公司 | Coiling type lifting jack |
Also Published As
Publication number | Publication date |
---|---|
FR2558817B1 (en) | 1987-04-24 |
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TP | Transmission of property | ||
ST | Notification of lapse |