WO2016113448A1

WO2016113448A1 - Lifting jack device formed by threaded tubes with reversible ratchet or gearings

Info

Publication number: WO2016113448A1
Application number: PCT/ES2016/070004
Authority: WO
Inventors: Perfecto FERNANDEZ ALVAREZ
Original assignee: Tecnología Y Multihusillos Sl
Priority date: 2015-01-16
Filing date: 2016-01-09
Publication date: 2016-07-21

Abstract

The invention relates to a lifting jack device formed by a base (1) joined to an axial bearing assembly supported on the flat strip steel spring (2) and permitting a small rotation of the jack assembly over the base (1). This axial bearing assembly is joined to the set of tubes (13), (14), (15), (16), (17), (18) and (19) that are screwed to one another, and the latter being welded to the vehicle anti-rotation support. The external tube is joined to the tube rotation gearing (9). The gearing (10) causes the set of tubes to rotate provoking the lifting or lowering of the jack. In this same jack assembly, the gearing assembly can be substituted by the reversible ratchet assembly. The grooved washer (9a) is joined to the set of tubes mounted with the vehicle anti-rotation support (22) thereof, and the ratchet assembly is located on top of same and the tube (13). The rotation of the ratchet provokes the lifting of the jack and rotating the ratchet shaft (10a) by 180 degrees, the direction is changed, lowering the jack.

Description

D E S C R I P C I Ó N

CAT FOR VEHICLES FORMED BY THREADED TUBES WITH REVERSIBLE RATCHET OR GEARS

SECTOR OF THE TECHNIQUE

Currently the car jacks are of parallelogram type formed by 4 arms joined together by bases and pins and by means of a threaded spindle and a nut by means of which it is raised or lowered to perform the lifting operation of a vehicle.

Patent No. CS8904826 is one of the many models of this type of cat. Other types of jacks are those denominated in Y similar to No. US6068239 They are somewhat simpler since they usually use 2 or 3 arms joined together and by means of a threaded spindle the vehicle is raised or lowered in the same way. These types of cats are very different from those described in the present invention.

There are other types of so-called bottle cats that are more similar to the one presented here, but that differ considerably, since they are only applicable in cars that are very high from the chassis to the ground (pick-ups), because they have a cat height ratio - Elevation of 2 to 3 maximum, not being applicable in most of the current vehicles.

BACKGROUND OF THE INVENTION

The present invention corresponds to the patent application P201530051 dated January 16, 2015, and the application for patent application P201531732 dated November 29, 2015 to which different inventions are added:

- On the one hand, the arrangement of the tubes is inverse to that of the previous application, since the tube with more diameter is in the lower part so that when it rises it is in the form of a pyramid, giving a visual sensation of greater security.

- A new invention is added when designing a turning system by means of gears that decreases the turning effort to lift the load, since the gear ratio can be 1: 2, 1: 3 or another, reducing the effort of drive to perform.

- The set of spinning bearings is also passed to the bottom of the cat, thus reducing the height of the collected cat

- A new invention is added when designing a system of

positioning of the cat to remain straight at the time of placement, by means of a plate spring, without increasing the height of the cat and also allowing the assembly to rotate on the support base, so that the cat adapts in the rise and fall to angle of the vehicle, and thus we minimize the buckling efforts of the cat.

In the known state of the art, those with some similarity are ES2203779, ES 0176859, ES0333321, ES0228272, US1751738

The cat designed in the present invention differs considerably from those listed above since these do not meet the requirements currently required of a cat for use in utility vehicles, since due to the low height of current cars, these designs cannot be placed under of the car and give the lifting stroke that is currently needed, to release the wheel to change, due to the long stroke of the shock absorbers and the low chassis height of current cars. All these cats usually have a lifting capacity more or less twice the minimum height of the cat, the minimum height of the cat is usually around 180 mm and the maximum elevation above 350 mm so they are not applicable more than for vehicles all terrain, or pick ups.

The jack of the present invention in a typical design has a minimum collected height of 75 mm and can lift a vehicle to 360 mm or more. On the other hand, current bottle cats are expensive designs to produce and of greater weight than current ones (over 4 kg), which is another added problem due to the current trend of the automobile market to reduce the weight of vehicles to improve Consumption and constant decrease in the purchase price of components, the cat of the present invention is around 1, 2 kg, with which a very important weight reduction is achieved, even on parallelogram cats (usually weighing between 1, 8 to 3.8 kg.)

EXPLANATION OF THE INVENTION

In order to achieve the objectives discussed above of:

- Reduction of cat weight compared to those currently used.

- Decreased volume occupied in the vehicle when stored.

- No increase in manufacturing cost, to be able to displace current ones in use.

- Very high lifting capacity in relation to the minimum height of the jack, to be able to be placed in cars with very low chassis and to be able to make a lifting stroke that is more than 6 or 7 times the minimum length of the cat according to the needs of the vehicle.

- Stability of the jack in the elevation to minimize safety problems in use.

- Lower energy consumption in manufacturing than in current processes to minimize environmental impact. The present invention is composed of the following elements:

A base (1) that is a quasi-rectangular stamped piece, carries in the center a spherical part to allow the angular rotation of the cat over said area when lifting. This base (1) has live edges at the bottom to make it difficult to turn the base. Likewise, the sheet is corrugated to give more resistance to this element with the minimum material consumption. This base is removed by stamping 2 projections or fins (1 a) that act as turning stops of the gear set. This set of gears is placed between the two stops (the) and turning the gears prevents their radial rotation, forcing the tubes to rotate. On this Base (1) a flat plate spring (2) is placed that keeps the entire jack assembly straight at the time of placing it to lift the load, being slightly separated from the Base (1). The whole cat assembly is kept straight by the action of the flat plate spring (2) when the jack lifts the load, rotates a few degrees to adapt to the inclination of the vehicle, this is achieved by folding the flat plate spring (2) and rotating The lower bearing Support (3) on the spherical part of the Base (1).

On this plate the lower bearing Support (3) is supported, which also has a spherical shape with the same radius as the Base (1) on which it rests when it is exerting force and on which it can rotate to adapt to the changing angle to the Raise or lower the vehicle.

On the lower bearing support (3), which is a piece of stamped steel and also carries a heat treatment to prevent wear, which can be cemented or carbonized, an axial bearing (4) is placed that facilitates the rotation of the whole assembly of tubes transmitting the minimum effort to both the Base (1) and the vehicle anti-rotation support (22)

On the axial bearing (4) the upper bearing support (5) is supported, which is also preferably made of stamped steel, and has

also a treatment of cemented or carbonitrurado, to facilitate the sliding of the axial bearing (4) with the least possible friction and wear.

The upper bearing support (5) is welded to the internally threaded tube (13) or tightly bonded by crimp, rolled (figure 7), riveted or other system that strongly binds them both.

The Moyú of subjection (6) is mounted under pressure on the Support bearing suppenor (5) and has a radius equal to the inferior radius of the Base (1) so that when raising the weight lowers the Flat plate spring (2) by the action of this weight to support the radius of the lower bearing support (3) on the radius of the base (1), leaving the radius of the clamping mojú (6) free, facilitating the maneuver of rotation of the jack assembly to adapt to the angle requested by the vehicle.

The tubes (14), (15), (16), (17) and (18) are externally threaded throughout their length.

Inside they are threaded between 10 and 14 millimeters, the rest is

machined to allow the passage of the tube that is introduced inside, but leaving a minimum clearance to avoid buckling of the set. These tubes have at the bottom of a groove (20), where a metal ring is introduced that prevents the tube from ending the thread path, butting the inner thread of the tube on which it has been threaded. This means that, for example, the internal and externally threaded tube (14) has been threaded onto the internally threaded tube (13) by lifting the load, until the metal washer inserted in the groove (20) on the internal thread of the internally threaded tube (13) preventing the inner and externally threaded Tube (14) from continuing to curl, which causes the next Tube (15) to start rotating and so on until it reaches its maximum elevation. This groove (20) with its metal washer, can be replaced by any element that acts as a stop, such as a welding point, a small protrusion of material produced by stamping at the end of the tube or any other system that prevents passage of the thread of one tube over the other, an example is shown in drawing 5 in which material has been displaced from the bottom of the thread by means of a pressure cut so as to prevent the passage of another thread through this point.

The internally threaded Tube (13) is joined jointly by the Spinning Tube Gear (9), either by welding, pressure mounting, knurling or other system that joins them together.

The internally and extensively threaded tube (14), to which the lower tube stop (20) has already been created, is inserted into the internally threaded tube (13) to the lower tube stop (20). At this time the upper tube Stop (21) is created in the Tube (14), either by introducing a ring in the groove, producing a small tear in the Tube (14), with a welding point or other system, so that the two tubes remain with the possibility of threading in part of their length, but preventing them from leaving each other.

Subsequently, the inner and extended threaded tube (15) is introduced, to which the lower tube stop (20) has already been created, on the tube (14) until the end of the thread and the upper tube stop is created ( 21) in the same way as in the previous step.

In the same way we proceed with internally and extensively threaded Tubes (16), (17) and (18).

The threaded tube (19) is also manufactured by the lower tube stop (20) and is inserted over the inner and extended threaded tube (18). When the stop is welded, the anti-vehicle support (22) is welded at the upper end so that all the tubes can rotate freely, but can no longer be separated from the assembly they form.

Finally, the upper bearing support (5) is attached to the threaded tube

inwardly (13) so that they are tightly bound. This can be done by welding, crimping, crimping, rolling (figure 7), by means of pins etc. Above all this set of mounted tubes is assembled the assembly that will turn the tubes to fulfill their function. Two ways of carrying it out are considered in the present invention:

In the first option it is the one explained in the patent application

P201530051 dated January 16, 2015, in which the transmission of movement is made by a ratchet system.

In this case the operation is as follows:

The slotted washer (9a) joins the internally threaded tube (13) by means of welding, pressure mounting, knurling, gluing or other system that fixes them jointly.

The ratchet shaft (10a) the ratchet spring (1 1 a) is mounted on the lower base ratchet assembly (7a) and the ratchet shaft stop pin (12a) is mounted. The lower Base ratchet set (7a) is introduced with all the above mounted on the internally threaded tube (13) at the bottom and which is already mounted with all tubes (14), (15), (16), (17 ), (18) and (19) and which is already attached to the upper axial bearing support (5). The upper body of the ratchet assembly (8a) is inserted through the upper part of the internally threaded tube (13) and is attached to the former by means of screws or self-closing clips manufactured in the same upper and lower ratchet assembly body so that they remain strongly United.

The operation is as follows. A lever is introduced in the lifting lever Drill (23a) that has a certain angle to facilitate the position of operation of the jack, making this position higher from the ground. This lever is pulled by a rotation of more than 90 degrees, when making this turn the Ratchet Shaft (10a) that is inserted into the groove of the slotted Washer (9a) rotates this washer which as it is attached to the internally threaded Tube (13 ) rotates it, causing the internally and externally threaded Tube (14) to rise unscrewing from the Tube (13). At the end of this angle of rotation of more than 90 degrees we turn the same angle in the opposite direction, now as the ratchet shaft has a chamfer in this direction of rotation it goes backwards

pushing the ratchet spring (1 1 a) passing over the grooves of the grooved washer (9a) without causing the displacement of this grooved washer and therefore the internally threaded tube (13) does not move.

Upon reaching the starting point the lift lever starts the cycle again causing another turn of the internally threaded tube (13) and

getting another cat lift. This is repeated until the tube (14) is blocked by resting the lower tube stop (20) on the inside of the pipe thread (13). When locked, the next tube (15) begins to unscrew and so on until the vehicle is raised to the desired height to be able to remove the wheel and introduce a new one.

To lower the assembly, the ratchet shaft (10a) is pulled until it is released from the slot, rotated 180 degrees so that the ratchet shaft stop pin (12a) re-enters the slot of the lower base ratchet assembly (7a), and by pushing the force in the opposite direction, we lower the jack, and in the same direction the ratchet assembly moves without causing any movement when the ratchet shaft jumps over the grooves. So on we lower the cat until the vehicle rests the wheels on the ground and allows us to release the cat.

Second option:

In the second option, this movement transmission is done by means of gears. This second option has the advantage that for a cost similar to that of the ratchet, the torque exerted on the crank by the user is smaller to achieve the lifting of the load, difficulty that exists in the system of ratchet to lift heavy vehicles type pick-up or SUVs.

In the event that the movement is transmitted by means of gears, the operation is as follows: The Gear Turning Tube (9) joins

in solidarity with the Tube (13) by means of welding, pressure mounting, knurling, gluing or other system that strongly joins them, the lower Base set of the gear rotation (7) is introduced into the internally threaded Tube (13) at the bottom and which is already mounted with all the Tubes

(14, 15, 16, 17, 18, 19) and that is already tightly attached to the upper axial bearing support (5).

The upper body gear turn assembly (8) is introduced through the vehicle anti-rotation support (22) into the internally threaded tube (13). This element, as well as the lower Base set of gear gears (7), will preferably be made of a plastic material type POM or similar, to reduce the weight of the assembly. It can also be manufactured in sheet metal by stamping, although it will increase the weight of the set. These 2 elements will be joined together by means of screws or closure clips made of the same plastic, so that they remain tightly bonded.

Before assembly, the Drive Gear (10) must be inserted into the Drive Gear Shaft (12) with its corresponding key and this shaft will be mounted when the Seeger Washer (1 1) is introduced. The assembly formed by the gears plus the upper and lower bodies, will be placed between the anti-rotation stops gear assembly (1 a) of the Base (1) so as to prevent its radial rotation when the whole assembly is mounted. This is the case when the gear set is mounted and cannot rotate on the internally threaded tube (13) because it is prevented by the anti-rotation stops gear set (1 a) when not turning the gear set causes the rotating movement of the driving gear shaft ( 12) transmit the rotation to the conductive gear (10), this one, when turning, transmits the movement to the tube rotation gear (9) and this gear, being joined jointly to the internally threaded tube (13), rotates this tube, raising or lowering the tube internally threaded (14) until the upper or lower stops (20) or (21) stop on the internal thread of the tube (13) and the internally and externally threaded tube (14), this is how turning the shaft produces the rotation of the set of gears and tubes and cause rise or fall of the set of threaded pipes, getting the lift or lower of the vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS

- Figure 1 represents a central section of the cat with a system of

gears in lower position (all collected)

- Figure 2 represents a central cut of the jack with gear system in maximum extension position - Figure 3 represents a central cut of the jack with ratchet system in lower position (all collected)

- Figure 4 represents a central cut of the jack with ratchet system in maximum extension position.

- Figure 5 represents the beginning and end of the internal thread of the tubes that should be with a small radius. - Figure 6 represents the cut produced at the bottom of the thread to stop.

- Figure 7 represents a possible system for crimping the tube (13) with the upper bearing support (5) to join them jointly and severally.

- Figure 8 represents a section of the reversible ratchet system.

Below is a list of all the elements that make up the invention:

1 Base

1 a Anti-rotation stops gear set

2 Flat plate spring

3 Lower bearing support

4 Axial bearing

Upper bearing support

6 Moyú clamping

7 Bottom base gear turn assembly

7a Bottom base ratchet set

8 Upper body gear set

8a Upper Body ratchet set 9 Tube turn gear 9th slotted washer

10 Driver Gear

10th ratchet shaft

1 1 Seeger washer

1 1 a Ratchet spring

12 Drive gear shaft

12th Pin stopper ratchet shaft

13 Internally threaded tube

14 Internally and externally threaded tube

15 Internally and externally threaded tube

16 Internally and externally threaded tube 17 Internally and externally threaded tube

18 Internally and externally threaded tube

19 Externally threaded tube

20 Bottom tube stop

21 Top tube stop 22 Vehicle anti-rotation support

23a Drill for lifting lever

PREFERRED EMBODIMENT OF THE INVENTION

As already indicated the present invention corresponds to the request for patent P201530051 dated January 16, 2015, and to the application for the addition of patent P201531732 of November 29, 2015.

The invention consists of a metal Base (1) that will be manufactured

preferably by drawing forming the radius on which the lower bearing support (3) will rest, likewise in this operation the anti-rotation gears set gears (1 a) will be performed. This base will be manufactured with grooves in live edge at the bottom to prevent the base from rotating when lifting the vehicle.

By cutting in stamping, the flat plate spring (2) will be manufactured, subsequently giving it the corresponding tempering and tempering heat treatment to achieve the typical characteristics of this spring steel (50CrV4) or similar.

The lower bearing support (3) is also a metal part and will be manufactured by stamping, being subsequently treated to achieve a hardness in the support area of the axial bearing (4), this treatment can be a hardening, cracked carbon or also a tempering inductively.

The axial bearing will preferably be of needles because it occupies less space than if it is of balls, helping to achieve the lowest height of the set.

The upper bearing support (5) is also a metal part and will also be manufactured by stamping or drawing, it will also be treated

Subsequently, in order to achieve a hardness in the support area of the axial bearing (4), this treatment can be a hardening, carbonitrided or also an induction hardening. The Moyú of subjection (6) will be manufactured preferably by mechanized

The lower base gear turn assembly (7) and the upper body turn gear assembly (8) will be pieces of plastic, POM or similar material, to minimize the weight of the jack. They will preferably be manufactured by Injection to have a reduced cost.

The tube turning gear (9) and the driving gear (10) will preferably be manufactured by cutting and drawing in the press. They are metal parts and since they do not need great precision due to the low speeds of

operation, which is the most economical way of manufacturing, can also be manufactured by sintering in a slightly more expensive and more precise way.

The seeger washer (1 1) is a commercial element. The driving gear shaft (12) is manufactured by machining in case of being metallic, there is also the option of manufacturing it by injection plastic.

The threaded tubes (13), (14), (15), (16), (17), (18), and (19) will be manufactured from a steel tube preferably in multi-spindle lathes, where the outside will be threaded by lamination and the interior by cutting, leaving the finished piece. The beginning and end of the thread must be made in such a way that it makes a good stop against the upper and lower stops (21) and (20) so that the beginning of the thread is not in the cone and with the threading effort can deform the tube allowing one tube to unscrew over the other. That is why the internal thread of the tubes must start and end abruptly and with a minimum radius that makes a good stop. Figure 5

The lower tube stops (20) and upper tube stops (21) can be metal rings formed in special machines for this function (spring machines), which are inserted at the appropriate time in the slot.

These stops can also be created on the tubes by welding, or by creating extrusions in the final areas of the thread or by drawing with a die Figure 5 The vehicle anti-rotation support (22) is also a metal part and manufactured in presses by drawing.

The assembly of the assembly is done as follows: 1 - The tubes, with the exception of the internally threaded tube (13), create the lower tube stops (20) either by mounting a metal ring, giving a welding point, or creating a stop by

drawing or cutting of the piece (Fig. 6)

2- Subsequently, the internally and externally threaded tube (14) is inserted into the internally threaded tube (13). When it has reached a stop on the inner thread of the Tube (13) the Bottom tube stop (20) the ring is inserted in the upper part of the tube (14), this stop can also be achieved with a welding point or in a Press creating a cap by drawing or cutting the bottom of the thread. (Fig. 6)

3- Then the tube (15) is introduced on the (14) and the

same operation of creating the stops and so on until all the tubes are mounted.

4- On the last externally threaded tube (19) the vehicle anti-rotation support is welded. At this time all the tubes can be threaded together or unscrewed, but they can no longer be separated from each other.

5- Above all this set the upper bearing support is mounted

(5). This bearing support can also be mounted by welding it, with a hook to the tube (13), by means of a roll over a groove created in the lower part of the tube (13) (Figure 7) or any other system that creates a strong Union .

6- The tube rotation gear (9) is mounted under pressure on the internally threaded tube (13). In case you require it, you will be given a welding point, some type of knurling, hot mounting or similar, to ensure that they remain tightly joined,

7- The gear assembly is assembled, formed by the lower base gear assembly (7), the driving gear (10) mounted on the lower base gear turn assembly and seeger washer (1 1). This subset is introduced by the upper bearing support (5) into the internally threaded tube (13). Now the upper body of the gear set (8) is introduced by the anti-rotation vehicle support (22) and is joined by screws or a click-type closure created for this purpose in the

Upper and lower bodies of the gear set (7) and (8).

8- In the lower part, the axial bearing (5), the lower bearing support (3), the flat plate spring (2) and the base (1) are placed on the Upper bearing Support (5). When the whole assembly is mounted, the Moyú clamp (6) is mounted under pressure or threaded and with this operation we have the entire assembly mounted.

In the event that it is mounted on the option whose patent application is the

P201530051, with the variations of the present patent addition, with the Ratchet system, the preferred embodiment of the invention would be the same until step 5 above. After having the entire set of tubes mounted with the vehicle anti-rotation support (22) and the upper bearing support (5) mounted, the next step would be: 1 - The slotted washer (9a) is mounted under pressure on the tube internally threaded (13). If required, it will be given a welding point, some type of pressure-mounted knurling, hot mounting or similar, to ensure that they remain tightly joined, 2- The assembly is inserted onto the internally threaded tube (13)

Ratchet, formed by the lower Base ratchet set (7a), with the Ratchet Shaft (10a) the Ratchet Spring (1 1 a) and the Ratchet Stopper Pin (12a) mounted. This subset is inserted through the upper bearing support (5) into the internally threaded tube (13). The upper body of the ratchet assembly (8a) is now introduced by the anti-rotation vehicle support and is joined by screws or a click-type closure created for this purpose in the

Upper and lower bodies of the ratchet assembly (7a) and (8a).

In the lower part, the axial bearing (5), the lower bearing support (3), the flat plate spring (2) and the base (1) are placed on the upper bearing support (5). When the whole assembly is mounted, the Moyú clamp (6) is mounted under pressure or threaded and with this operation we have the entire assembly mounted.

INDUSTRIAL APPLICATION OF THE INVENTION.

The industrial application of the invention is clearly derived from the

previous explanations, only that the invention is not only for lifting vehicles, but also for raising any other type of part, assembly or component that needs to be elevated and is within the limits of stroke and load of the set of the present invention.

Claims

Lifting jack device comprising a base (1) that rests on the ground and supports the weight to be lifted, this base has a spherical shape in the center, also has two anti-rotation stops set gears (1 a) that prevent the radial rotation of the gear set. Between this Base (1) and the Support

lower bearing (3), which also has a spherical part that rests on that of the Base (1), the flat plate spring (2) is placed, which keeps the jack straight at rest and that allows a certain angular rotation of the load jack assembly on the Base (1) to adapt to the vehicle's grades, so that the whole set of tubes remains as straight as possible. The axial bearing (4) is located between the lower bearing support (3) and the upper bearing support (5) which in turn is connected to the internally threaded tube (13), on this tube they are mounted inside with their corresponding stops lower and upper tubes (20) and (21) the internally and externally threaded tubes (14), (15), (16), (17), (18) and the externally threaded tube (19). The vehicle anti-rotation support (22) is welded to the externally threaded tube (19). The externally threaded tubes in the lower part are manufactured with a lower tube stop (20), either by welding, drawing by drawing (fig. 5) or another system. After assembling one inside the other, the same is done on the top of all internally and externally threaded tubes by manufacturing the upper tube Stop (21) in the same manner indicated above.

Likewise, the internally threaded tubes (13), (14), (15), (16), (17) and (18) must have the beginning and end of the thread truncated to make a correct stop. (Fig. 5)

To cause the movement of lifting or lowering the cat can be done in two ways:

- By means of gears:

On the internally threaded Tube (13), the Spinning Tube Gear (9), which engages with the Driving Gear (10) which is mounted on the Driving Gear Shaft (12) and the Seeger Washer (1 1), fixes its position. This pair of gears are mounted between the lower base set gears (7) and the upper body set twist gears (8), both being tightly connected to each other by means of screws or locking clips, and in turn are mounted between the anti stops gear set rotation (1 a) that prevents the radial rotation of the assembly and thus forcing the tube assembly to rotate, when the rotation of the gear shaft occurs

13

REPLACEMENT SHEET (RULE 26) driver (12), turning the driver gear (10) and at the same time turning the tube turning gear (9), causing the internally threaded tube (13) to rotate and this rotates the other tubes, as the vehicle anti-rotation support fixed in the chassis of the car, this is how we manage to raise or lower the vehicle. This gear set by having a reducing ratio decreases the torque made to raise or lower the load, thus making the use of the jack more comfortable.

All this set is connected to the Base (1) by means of the Moyú of subjection (6).

- By means of reversible ratchet:

The grooved washer (9a) is firmly connected to the internally threaded tube (13) by means of welding, pressure mounting, knurling, gluing or other system that fixes them jointly and severally. The ratchet shaft (10a) the ratchet spring (1 1 a) is mounted on the lower base ratchet assembly (7a) and the ratchet shaft stop pin (12a) is mounted. The lower Base ratchet set (7a) with all of the above mounted on the internally threaded tube (13) on the bottom and which is already mounted with all tubes (14), (15), (16), (17), (18) and (19) and that it is already welded to the upper axial bearing support (5). The upper ratchet assembly body (8a) is attached and attached to the previous one by means of screws or self-closing clips manufactured in the same upper and lower ratchet assembly body so that they are tightly attached. When turning in one direction, the ratchet rotates the slotted washer and the tubes

causing the cat to rise or fall. All this set is connected to the Base (1) by means of the Moyú of subjection (6).

2. Cat device according to claim 1 characterized in that the Base (1) preferably made of stamped steel, is the support element on the ground, has protrusions in live edge to prevent rotation when nailed to the ground when it supports the weight of all The set to be raised has a spherical shape in the center, to facilitate the rotation of the cat assembly on this base. And a hole in the upper part to allow the cat set to rotate when the flat plate spring (2) can be introduced into this hole.

3. Jack device characterized according to claim 1, because the Base (1) has two anti-rotation gears set (la), between which the gear set is introduced and prevents its radial rotation, thus forcing the rotation of the tubes to extend or collect, raising or lowering the load.

4. Cat device characterized according to claim 1, because the lower bearing support (3) rests on the flat plate spring (2), thus maintaining the straight jack assembly at rest, in order to facilitate a good positioning of the jack under The vehicle has a spherical shape that can rotate on the

14

REPLACEMENT SHEET (RULE 26) spherical shape of the Base (1) thus adapting to the inclination of the vehicle. This is done by folding the flat plate spring (2). When the load disappears, this spring returns the cat straight when it is free of load.

5. Jack device according to claim 1 characterized in that the axial bearing (4) which is placed between the lower bearing support (3) and the upper bearing (5) facilitates the rotation of the jack assembly, the Base (1) and the Support remaining fixed vehicle anti-rotation (22) and minimizes the radial effort made on these elements.

6. Jack device according to claim 1 characterized in that the set of elements Base (1), Flat plate spring (2), Lower bearing support (3), Axial bearing (4) and Upper bearing support (5) with the entire assembly of threaded and mounted tubes with its vehicle anti-rotation support (22) and the assembled gear assembly, are joined by means of the Moyú clamp (6) that can be mounted under pressure or threaded onto the upper bearing support (5).

7. Jack device according to claim 1, characterized in that all the externally threaded tubes in the lower part are manufactured with a lower tube stop (20), either by welding, by cutting by drawing (fig. 5), by introducing a metal washer, Or other system. After mounting the inner threaded tube and

externally (14) inside the internally threaded tube (13) the same is done in the upper part of tube 14 creating the upper tube stop (21). This repeats the operation with the tubes (15), (16), (17) and (18). The vehicle anti-rotation Base is welded to the last tube (19). At this time all the tubes can rotate with each other extending to their maximum extent, or shrinking until they all get inside the tube (13), but they can no longer separate from each other.

8. Jack device according to claim 1 characterized in that the internally threaded tubes (13), (14), (15), (16), (17), and (18) must have the beginning and end of the thread cut with a minimum radius, so that they make a correct stop. (Fig. 5)

9. Jack device according to claim 1, characterized in that the Tube Swivel Gear (9) is strongly connected to the internally threaded Tube (13), whether by welding, hot tying or rolling according to Figure 7, or any other system that links them strongly .

10. Jack device according to claim 1 characterized in that the gear rotation assembly is formed by the lower base gear rotation assembly (7) and the upper body gear rotation assembly (8), which are strongly joined together by screws, clips closure or other system that strongly binds them. This set is inserted between the Spinning Gear tube (9) attached to the tube

fifteen

REPLACEMENT SHEET (RULE 26) (13) and the anti-rotation stops set gears (1 a) of the Base (1). This set allows the free rotation of the tubes inside with the Tube Twist Gear (9) attached to the internally threaded Tube (13).

eleven . Jack device according to claim 10, characterized in that the gear assembly with the tube turning gear (9), the

Driving gear (10) and Driving gear shaft (12), which is positioned by the seeger washer (1 1) form a reducer that reduces the effort to raise or lower the jack in load.

12. Jack device according to claim 9, characterized in that the gear assembly cannot rotate radially when it is placed between the anti-rotation gears set (1 a), since the torque transmitted to the driving gear shaft (10) cannot be rotated radially. It is transmitted to the Tube rotation gear (9) and this to the internally threaded tube (13), causing its rotation, this in turn rotates the internally and externally threaded tube (14) raising the load until it stops, the bottom tube stop ( 20), in the inner thread of the Tube (13), at this moment the next Tube (15) begins to rotate and so on until its total deployment.

13. Jack device according to claim 1 characterized by power

incorporate a reversible ratchet system to the cat assembly replacing the gear system, formed by the threaded tubes plus the base already described, so that with this reversible ratchet system we can raise or lower the jack.

14. Jack device according to claim 13 characterized in that the slotted washer (9a) is strongly connected to the Tube (13). The ratchet assembly is mounted on them with its lower Base ratchet assembly (7a) tightly connected by screws or other locking clip system to the upper body ratchet assembly (8a), with its ratchet shaft (10a), its ratchet spring (1 1 a) and its ratchet shaft stop pin (12a) mounted, so that when turning in one direction we cause the slotted washer (9a) to move, when turning in the other direction the ratchet shaft (10) jumps over the slotted washer ( 9a) without causing any movement.

15. Jack device according to claim 13 characterized in that the slotted washer (9a) is strongly connected to the Tube (13) and when turning the ratchet, we rotate this internally threaded tube (13) which rotates the internally and externally threaded tube (14 ) until the inner thread of the internally threaded Tube (13) is bumped and thus causing the rotation of the next internally and externally threaded Tube (15) and so on until the cat is completely extended.

16

REPLACEMENT SHEET (RULE 26)

16. Cat device according to claim 13, characterized in that, by rotating the ratchet shaft (10a) 180 degrees, we change the direction of rotation of the ratchet, causing the introduction of some tubes over the other, by lowering the load and returning the cat to the position of minimum extension.

17

REPLACEMENT SHEET (RULE 26)