MX2007011257A - Juice squeezer. - Google Patents

Abstract

The invention relates to a citric fruit squeezer comprising a ramp for supplying halves of citric fruit, and two rotating rollers respectively having complementary concave and convex surfaces and arranged one above the other. The upper roller has a concave semi-spherical surface (female) comprising a plurality of rods, and the lower roller has a convex surface (male) comprising a plurality of rods, both surfaces defining a space through which the halves of citrus fruit can pass in order to be squeezed and ejected through the rotating rollers. Said rollers are driven by a plurality of gear wheels in the form of rotating toothed wheels which are, in turn, driven by an electric motor, said gear elements and the motor being arranged behind the cover on which the rollers are mounted. The entire driving and squeezing assembly is arranged behind a housing containing a juice collecting tray in the lower part thereof.

Description

JUICER FIELD OF THE INVENTION The present invention relates to an automatic machine for squeezing citrus fruit juices, more specifically to an automatic machine for squeezing oranges and fruits that have a round shape with a thick and resistant shell, such as limes and tangerines.

BACKGROUND OF THE INVENTION.

In the state of the art there is a plurality of juice extractor machines that use a set of rotating rollers with combinations of female and male rod presses that press the fruit against the surface of the walls of the female cavity. The vast majority of these machines consist of rollers that rotate independently; but they are coupled to the female and male cavities to exert pressure on the fruit and extract the juice from it.

Canadian patent CA 2,539,581, granted on May 12, 2005, to Joaquín Mengual M., describes and protects a machine for extracting juices that consists of an upper roller with female housings in the shape of a spherical cap, a lower roller with three heads or male elements topped by a semi-spherical cap in the shape of a half moon, in the coordinated rotation with the upper roller presses half of the orange located in the female element of the top roller, with the pressure the juice is extracted and the waste or thrown is thrown by the turn of the male head towards a deposit, to accommodate a new half to which the juice will be extracted by the same procedure. Said machine has an outer casing in front of which a tank for extracted juice is held, in the interior are located the motor and the drive gear for the rotating rolls.

The British patent GB 2404844, granted to Sarah Barnard on February 16, 2005, describes and protects a manual device for extracting citrus juices, said device comprises a central stem with an intermediate butt that extends horizontally, immediately possesses an outer tube with sharp end in saw tooth with which the fruit is cut, in the wall of the outer tube a series of hollows and projections of general round form are located; the end of the outer tube is held in the outer tube and in continuation of the central rod.

The international application WO 2004052126, of Zumex, whose inventor is Joaquín Mengual, published on June 24, 2004; discloses a mobile knife cutting device for a juice vending machine of the type comprising a set of rollers with female and male elements respectively. The fruit is guided by the rotation of the rollers towards the blades and the halves are subjected to pressure by means of the three elements or male heads to extract the juice.

The patent MX 198266, granted on August 25, 2000 to Alberto Villagomez Piña, describes and protects a manual machine for cutting and squeezing oranges that has an outer casing in the form of a rectangular prism, inside said casing has a wheel mechanism cogged teeth to rotate two pairs of rollers, one with female halves for orange halves and the other with male heads for coupling into the female housings and pressing the orange half to extract the juice. The device is provided with a feeding conduit, a razor that cuts the oranges in halves. The male heads are three pivots arranged radially and including at their ends three spherical crescent-shaped caps which fit into the semi-spherical female housings.

U.S. Patent No. 5,445,065, issued to Rafael O. Font, on August 29, 1995, describes and protects a machine for extracting citrus juices by means of two rotating female housings and two male heads that move in the vertical direction to fit in the female housing that already contains half of the orange and press it to extract the juice.

U.S. Patents Nos. 5,313,879; 5,170,699; 2,707,981, describe extractor machines with female rotating rollers and rollers with male heads, some of them with cutting elements or knife included which split the oranges in half.

The British patent GB 2,216,784, granted to Gómez Carmen Llopis on October 18, 1989, describes an extractor machine with two pairs of female-male rollers; a tubular feeding duct, two lateral ducts of waste ejection.

BRIEF DESCRIPTION OF THE INVENTION It is an object of the present invention to provide an apparatus for squeezing juice from citrus fruits, oranges, lemons, grapefruit, limes and tangerines.

It is another object of the present invention to provide an apparatus for squeezing the juice of citrus fruits fed in halves by means of a side ramp and expelling the bagasse through another side ramp.

It is also an object of the present invention to provide an apparatus for squeezing citrus fruit juices which is obtained by means of two rotating rollers with complementary female and male surfaces.

It is still another object of the present invention to provide an apparatus for squeezing citrus fruit juices whose hollow rolls are a reel and a scroll with rows of pins on its surface, made of polycarbonate.

It is still an object of the present invention to provide an apparatus for squeezing citrus juices, with a housing open on the front and its lid, two lateral windows through which fruit halves are fed and waste is expelled; the juice is collected in a lower tray inside the casing.

BRIEF DESCRIPTION OF THE DRAWINGS.

Figure 1 is a front perspective view of the seat cover of the gears and the engine.

Figure 2 is a rear perspective view showing the bushings where the upper and lower axes that move the rollers for squeezing are coupled.

Figure 3 is a perspective view showing the location of the gears, supports and the drive motor.

Figure 4 is a perspective view showing the set of gears and the upper and lower drive shafts.

Figure 5 is a front perspective view showing the location of the drive shafts and the seats of the rollers.

Figure 6 is a perspective view showing the location of the feed and eviction ramps, as well as the lower roller or volute.

Figure 6A is a perspective view showing the location of the seat of the upper roll or reel, which has a rectangular prism shape.

Figure 7 is a perspective view showing the position of the upper roller or reel.

Figure 7A is a rear perspective view showing the location of the feed and eviction ramps, the lower and upper rollers as well as the location of the collection tray.

Figure 8 is a perspective view of the interior of the casing, showing the seats of the engine cover, the window of the feeding ramp and the safety switch that is controlled by a front cover seat .

Figure 8A is a perspective view of the outer casing, showing the engine cover in the position of use, the accesses of the ramps and the cover itself, the fastening eyebrows of the ramps and tray as well as the bare front of the housing.

Figure 9 is a perspective view of the internal face of the front cover of the housing.

Figure 10 is an exploded view of the engine cover, the roller seats, the front cover of the casing and knob, as well as the collection tray.

Figure 11 is a perspective view of the upper drive shaft and the positioning knob of the upper roller.

Figure 12 is a longitudinal sectional view showing the hollow interior of the volute of the juice extractor of the present invention formed by two halves.

Figure 13 is a longitudinal sectional view showing the hollow interior of the upper roller or reel of the juicer of the present invention.

Figure 14 is a perspective view of the feeding ramp by sliding the halves of the citrus fruits.

Figure 15 is a view of the lower face of the evacuation ramp of the waste or bagasse halves of the citrus fruits already squeezed.

Figure 16 is a side and back perspective view of the citrus juice juicer casing of the present invention.

Figure 17 is a front and side perspective view of the casing, collection tray, feed ramp in its retracted position and front knob of the citrus juicer of the present invention.

Figure 18 is a perspective view without external casing, showing the delivery system and the reel or upper device for squeezing the juice.

Figure 19 is a perspective view of the complete device with the two rollers to squeeze the juice, showing the lower volute (male) and the upper reel (female), as well as the juice collection tray in the lower part .

DETAILED DESCRIPTION OF THE INVENTION.

In the state of the art there are a plurality of machines to squeeze citrus juices, being common practice in that most of them have opposite rotating drums that trap fruit in female cavities of semi-spherical shape, in which rotating heads enter male of semi-spherical shape, located in another rotary drum, said heads press the fruit inside the female cavity to extract the juice, the whole previous sequence is synchronized in such a way that once the juice is squeezed, the cavity is emptied by the gravity action which discards the bagasse to allow the entry of a new half of citrus without squeezing and still juice.

The drums rotate in an opposite way in such a way that they catch the fruit, squeeze it and discard the gabazo.

The present invention relates to an automatic machine for squeezing mostly spherical citrus fruits, although fruits can also be squeezed into longitudinal slices, such as papayas, melons, mangoes in halves, etc., although the apparatus does not do so efficiently, not be designed for it. It consists of a sloping feeding ramp, two rollers, one female (reel) and another male (volute) with rows of pins on its surfaces which trap the fruit, oppress it and extract the juice that is collected in a tray located in the lower part of said juice squeezer; the bagasse or husk is pushed outwards and even beyond the body of the juicer by means of the centrifugal force generated by the rotation of the rollers and the grip of the pins, the waste is directed by means of a lower evacuation ramp. The rollers are driven in a continuous and synchronized by means of a system of rotating gear teeth rotating which in turn are driven by an electric motor, two of these gears transmit the rotation in the opposite direction to two independent axes on which are placed the rotating rollers that press the fruit for juice extraction, said system to squeeze this assembly into a vertical configuration casing with collection tray located at the bottom, has a pressure selection knob on the lid of the front of the housing.

To understand the invention in a clearer and more specific way, the attached figures will be used, which have a descriptive character; but not limiting and it will be clear that a person skilled in the art will be able to make different modifications to the present device generating modalities thereof, the sequence of the figures presents a sequence of assembly of the extractor of the present invention.

Figure 1 shows a perspective view of the cover of the motor (100) of the juicer of the present invention, said lid has a rectangular shape with the upper side rounded in the form of an arc, a central core and a flat perimeter in horizontal belt shape; said belt is formed by the straight sections of the base (D), the lateral ones (A and C) and the upper section (B) rounded with transverse guide channels; in the middle part of the back face of the core there are two through bushings (16 and 17) in which the drive shafts of the rollers squeezing the juice are coupled; a series of outgoing seats (4, 5 and 6) of the shafts of the gears, seat of subjection (8) of the spindle or worm with a head of subjection (9); fastening seats (13) of the motor cover with the housing; seats (10, 1) of the motor mounting plate that gives a fixed support and that absorbs the vibration thereof, the seat (7 and 14) also cooperate in the fastening of the motor; all the axes of the gears are snapped into the seats of the cover and the housing.

Figure 2 shows a front view of the engine cover (100) with the edge sections A, B, C, D, the support seats (7, 10 and 14) and the head (9), as well as the front section of the through bushings (16 and 17); in said front view the groove (55) and the angular recess (18) are also shown in the corners that function as guides for the positioning of the motor cover inside the body of the juicer casing, the motor cover is fixed to the housing by means of the screws that are placed in the holes (13 ') and that pass through the seats (13), the channel (55) and the angular recess (18) align the motor cover (100) ) in its front position of use, said motor cover supports the transmission gear of the drive generated by the motor that is also fastened to it.

Figure 3 shows the cover of the motor with its sides A, B, C and D, the location of the gears or sprockets and the motor, system that provides the driving energy for the rollers that squeeze the juice driven on the shafts rotating (1 and 2). The transmission system consists of five cogwheels with dense centers R1, R2, R3, R4 and R5, armed in said sequence; the wheel R5 is coupled to a screw or spindle (12) secured to the motor shaft (15) by one of the ends and at the other end is coupled a bearing (bearing) which is attached to a head (9) of the seat (8); the motor is attached to the seats (7, 10, 14) and to the shafts (1, 2, 3, 4) by means of the metal plate (53) and a system of bearings that absorb the vibration of the motor (15); the already configured delivery system is fixed to the bottom of the internal part of the housing by means of the seats (13) and the screws passing through them of the motor cover (100). The sprockets R5, R4 and R3 have a diameter of 9 cm and a thickness of 1 .1 cm, the sprocket R2 a diameter of 9.8 cm and a thickness of 1.3 cm, and the wheel R1 a diameter of 13.4 cm with a thickness of 1.3 cm.

Figure 4 shows a rear perspective view of the coupling of the sprockets R1-R5, the sprockets R5, R4 have associated a toothed cylinder r5 and r4 respectively, with a diameter of 2.5 cm in both; the gear wheel R3 has a toothed cylinder r3 of 3.0 cm in diameter which rotates in opposite directions to the gear wheels R1 and R2 mounted on the axes (1) and (2), the worm (12) is driven by the motor rotates the sprocket R5, which in turn rotates the associated cylinder r5 which upon turning communicates the turning movement to the sprocket R4, said wheel upon rotation drives the associated cylinder r4 which in turn spins to the sprocket R3 that communicates the turning movement to the associated toothed cylinder r3, said wheel is coupled with the sprockets R2 and R1, when turning the wheel r3 rotates in opposite directions to the wheels R2 and R1 which in turn they rotate the corresponding axes (2) and (1) on which they are mounted. Said axes pass through the bushing seats 21 'and 23', which have associated the prismatic seats (21) and (23); the shaft (2) has a body with an offset cylindrical intermediate section (22) that functions as a means of location to define the opening, therefore the pressure, between the roller to squeeze the upper and lower juice, not shown.

Figure 5 is a perspective view showing the front face d @ the engine cover (100), on the rear face they are already fastened in the seats the gears like the R5, the motor (15) the spindle or screw (12) placed in the support (9); the cover (100), at the corners formed by the sides C and O has a right angle recess (18) that serves as a guide and support for said motor cover inside the housing in cooperation with the eyebrows thereof; also the transverse groove (55) located on the arched side B serves as a guide for the rod that operates a safety switch; On the front face of the engine cover (100) and specifically on the bushings (16 and 17) the seats of the axes 1 and 2 which extend beyond the surface of the front face of the cover are placed in the neighborhood of the surface of the lid are the seats of the juice extraction rollers, namely the seat in the form of square prism (21) to place the lower roller in the form of a volute that is located on the axis (1); the seat in the form of a rectangular prism (23) to place the upper roller in the form of a reel. The middle region of the axis (2) has an off-center section (22) of larger diameter whose position is selected by means of an external knob, which when turning the spool about or away from the surface of the lower roll or volute, this in order that the surfaces of the rollers exert greater or lesser pressure between both rolls, according to the size requirements of the halves of the fruit to be squeezed, such as a lemon, an orange, a grapefruit, a lime, a tangerine respectively. The motor cover (100) is fixed to the internal seats of the housing by means of the screws 13 '.

Figure 6 is a perspective view showing the location of the lower roller or volute (20) and the feeding and ejection ramps, said roll is hollow formed of two halves, with an annular hole in its middle part that houses the shaft (1) so that cooperatively they turn in the clockwise direction (clockwise), movement that originates in the motor (15) and is transmitted to the round sprockets by means of the worm (12) one end of which is held in (9). The volute has two smooth side surfaces and a convex front surface with six pin lines (26), which enable traction to said volute-shaped roller, said traction drives the fruit to be squeezed and also pushes out the waste or bagasse on entering the edge of the section (27) of the waste chute (24); the fruit to be squeezed slides down the feeding ramp (28) is pressed between the rollers to squeeze the juice and then it is ejected. This figure lacks the placement of the upper roller or reel on the seat (23), the eccentric shaft (22) and the end pin (29) which in turn serves as a seat for the external positioning knob.

Figure 6 A is a view similar to that of Figure 6; but additionally shows the seat in the form of rectangular prism (60) and with central annular hole, said seat is the stage prior to the placement of the upper roller or reel; also shown is the location of the key (61) placed in the groove of a seat peg (29) and used to position and secure the outer pressure adjustment knob between the surfaces of the two upper and lower rollers (20) , which move by the energy transmitted from the motor (15) and squeeze the juice from the citrus fruit halves that are fed by the ramp (28) and whose bagasse is expelled by the ramp (24).

Figure 7 shows the location of the rollers to squeeze the juice, specifically the volute (20) and the reel (31) which are hollow bodies constructed of polycarbonate, the volute is formed of two semi-spherical bodies with hollow interior and a central through hole where the drive shaft (1) is placed; the spool (31) has a seat (71) in the form of a rectangular prism that is placed on another prism (60) with a central hole where the drive shaft is placed on whose outer end the seat (29) is placed, said seat has freedom of rotation to accommodate and avoid pitching in the turn due to the eccentricity of the shaft, the prismatic seat (71) extend outward six fixed membranes (70) whose external face ends in the outer perimeter ring (72), said membranes give rigidity and support to the concave (female) surface of the spool (31), said surface has a plurality of polycarbonate pins (32) arranged in seven lines that are intertwined with the corresponding six lines of volute pins, this is, the pins do not face one by one each line of pins is between two lines of pins of the other corresponding roller. The insertion in the drive shafts of the volute (20) and spool (32) rolls is done at the same time by matching the convex (male) surface of the volute and the concave (female) surface of the spool, since by its special geometry it would be impossible to assemble them in another way. Although this figure shows the feeding ramps (28) and the evacuation ramp (24), the collection tray (104), in the assembly of the apparatus these elements are placed until the end, that is, when the casing covers everything the mechanical system of impulsion (15 and R5) together with the rollers to squeeze the juice (20 and 31).

Figure 7 A, is a rear view of Figure 7, where the coupling seats (73) with the seat of the shaft (2), (74) are detailed with the seat of the shaft (1), said seats prevent it from drain the squeezed juice towards the back face of the engine cover.

Figure 8 is a perspective view of the inside of the casing of the citrus juicer (CL and CP), the internal seats (84) where the engine cover is fixed, the switch (83) which is actuated by means of the pressure exerted by the bar (82), which in turn is driven by placing the front cover of the casing, it covers the upper hole (81) with a lock; the bar guide (82) together with the guide (88) also serve as a guide for the positioning of the motor cover with the delivery system already in its position of use, one of the side windows is also shown (85 ) where the feeding ramp is placed which is secured in the transverse eyebrows (86) and (87).

Figure 8 A shows a perspective view of the complete housing with sections (CL and CP); but where the engine cover (100) has already been placed in its position and which the drive axles are missing and only the seats (23) and (21) on which said axles are previously placed are shown, in this figure the function of the guide elements of the motor cover (100) that slide through the transverse grooves of the arc-shaped upper section, such as the rod guide (82), the guide (83), is noteworthy; the guides (86, 87 and 91), the guide (91) serves as a fastening element for the recesses (18, Fig. 2); the location of the side windows (85) on which the places the feeding ramp, the window (89) on which the ejection or exit ramp is placed, said ramp engages in the transverse eyebrow (90); the motor cover (100) is secured to the housing by means of the screws (13 '), a rear base (102) and a rectangular front base in whose front recess the tray (104) for collecting the juice.

Figure 9 is a front view of the internal face of the front cover (TA) of the housing with the upper latch tab (92) which is inserted in the recess (81, Fig. 8 A) of the housing, a series of substantially transverse ribs (105) in cooperation with a substantially longitudinal central rib and a set of diagonal ribs in the upper and lower section, which emerge from the through holes (93) and (94) where the ends of the ribs are placed. the drive shafts (2) and (1), respectively. Said lid (TA) is fixed to the housing by means of the latch (92) and the side hooks (95) which are located at the ends of the guide (91, Fig. 8 A). When placing this front cover on the housing, the motor cover (100) must already have all the driving elements, on the axes the extraction rollers must be located, and then place said cover (TA), the seat ( 29) and the safety lock (61) fig. 6 A; the reel positioning knob (not shown) is placed on the safety; finally the juice collection tray is placed on the lower internal part of the casing.

Figure 10 shows an exploded sequence the engine cover (100) and its lower guide (18), the fastening screws (13 '), the seats (21 and 23), the seat (29) of the knob, the front cover (TA) with the secure eyebrow (92) the hooks (95), the lock (61) of the knob (63) and the tray (104) for collecting the juice.

Figure 11 shows the driving and mounting axle (2), with the eccentric intermediate body section (22), the seat (29) of the positioning knob (103) and the latch (61). The eccentricity of the section (22) locates the upper roller or reel in three positions with respect to the convex surface of the lower roller or volute, in a proximal position (2.5 mm) suitable for squeezing the juice of lemons, in an intermediate position ( 5.5 mm) suitable for squeezing juice from oranges, in a remote position (8.5 mm) suitable for squeezing grapefruit juice and for equivalent thicknesses of other sliced fruits. The driving and mounting shaft (2) passes through the bushing (16, Fig. 1) to fasten the gear (R2) on the rear of the engine cover (100), after the bushing (16) and on the front part of the motor cover extends forward the decentered section (22) on which the spool is mounted (31, Fig. 7 A), at the front end of the shaft the seat (29) of the knob is placed ( 103) and the spring lock, which is located in a final position on the front face of the cover of the housing. The knob can rotate by pulling it forward and holding it, because it has an internal spring that restores its retraction position, with this rotation selects the pressure between the rollers.

Figure 12 is a section of the housing (CL) showing mainly the driving and mounting shaft (1), which is held by means of the bushing (17, Fig. 1) in the engine cover (100); on the front of said motor cover and on the shaft (1) the lower roller or volute (20) is mounted for squeezing, said volute is hollow divided into two halves that are joined on the side face on which a series of pin lines are placed, between these lines of scroll pins and lines of pins of the reel (31) an empty space (120) is formed on which the halves of the fruit are allowed and forced to circulate to be oppressed and in this way squeeze the juice from them, said halves slide through the feeding ramp (28). The squeezing rollers are inside the housing (CL) which has a front cover (TA) with a front upper hole through which passes the end of the shaft (2, Fig. 1 1) and at the outer end of which is Place the adjustment and positioning knob (103, Fig. 11) not shown.

Figure 13 is a section of the casing (CL) showing mainly the driving and mounting shaft (2), which is held by means of the bushing (16, Fig. 1) in the engine cover (100); in the front part of said motor cover and on the shaft (2) the upper extraction roller or reel (31) is mounted, said reel is hollow with a concave side face (female) with semi-spherical cross-section and rectangular center section which contains lines of pins on the lateral surface, which in cooperation with the lines of pins of the volute (20) forms a space (120) on which the halves of the fruit are allowed and forced to circulate to be depressed and thus squeezing the juice from them, said halves slide through the feeding ramp (28). The squeezing rollers are located inside the housing (CL) which has a front cover (TA) with a front hole through which passes the end of the shaft (2, Fig. 1) having an eccentric intermediate section (22). ) and on whose outer end the knob is placed of adjustment and positioning (103, Fig. 1 1) that regulates the separation between both rollers and therefore the pressure exerted directly on the halves of the fruit. The front cover (TA) at the top has a flange (92) that functions as safe in cooperation with the hole in the upper part of the housing (CL); in this figure a section of the juice collection tray (104) is shown, which moves in a forward and backward movement by means of sliding eyebrows on the internal side walls of the casing, this to empty the juice that It has been squeezed by means of the coordinated rotation of the rollers that are driven by a transmission system which in turn is energized by the motor located at the bottom of the housing behind the motor cover.

Figure 14 shows a top perspective view of the feeding ramp (28), said ramp on its upper face has a series of parallel ribs that define sliding zones or rails according to the size of the fruit to which it is going to squeeze the juice, namely: the narrow central zone defined by the ribs (140) that define the central rails and with which it is enabled to drive the halves of lemons; the broader intermediate zone defined by the ribs (141) that define the intermediate rails and with which it is enabled to drive the halves of oranges; the end zone that covers the entire width of the ramp and that is enabled to drive the grapefruit halves along the end rails. The ramp (28) has two parallel edge ribs that prevent the halves from escaping out of said ramp; in the lower end area it has a round area (144) which engages in the vicinity of the convex lateral surface of the volute and which allows the rotation of the The same without interfering with its movement, on the underside of the ramp, has a transverse female eyebrow (143) by means of which the ramp is fixed to the side window of the juicer casing.

Figure 15 shows a view of the lower face of the ejection chute (24), showing the upper edge with a rounded and toothed profile (160) which is located in the vicinity of the convex lateral surface of the volute in its turning movement, said end has a series of elongated teeth (27) that trap the bagasse of the fruit and allow the runoff of residual juice downward where it is collected by the tray, it is noted on the rear face of said ramp (24) a plurality of longitudinal ribs that give strength and resistance to said ramp, said ribs end in a female transverse rib (161) in which a male eyebrow located at a lower edge of the lateral side of the housing is coupled; finally, the rectangular edge (163) with rounded corners of the lower end from which the bagasse falls into the garbage can or container suitable for it, which is independent of the juicer object of the present invention.

Figure 16 is a rear perspective view of the exterior of the casing (CL) of the juicer object of the present invention, where the upper clamping lock (92) of the front cover for the casing is shown in its position of use, the rear part of the casing (CP) inside which the engine and the gears are located, that is to say, the drive and transmission system, the rear end (102) of the casing serving as the basis thereof; the exit or window side (89) of the housing through which the bagasse is expelled through the end (163) of the ejection chute; in this view of the figure the feeding ramp is shown in a position folded to the casing, where only the end (144) is seen, in its use position this end is located inside the casing and close to the surface of the casing. scroll that rotates to catch the halves of the fruit and in cooperation with the parallel lines of pins located on the surfaces of the reel and the volute.

Figure 17 is a front perspective view of the casing (CL) and (CP) of the juice juicer object of the present invention, where the lower face of the feed ramp (28) is now shown in its folded position but showing details thereof as is its back or bottom face where a plurality of parallel longitudinal ribs (170) are detailed which in cooperation with the lateral edges (113) give rigidity and resistance to said ramp, the female transverse rib ( 111) serves to hook said ramp to the edge of the side window of the housing located in the side entry window. The front cover (TA) covers the access to the interior of the casing (CL) and has an upper securing lock (92), the front face has dot-shaped markings (110) around the knob (103), said markings indicate the position of the upper reel and the proper pressure to squeeze the juice from lemons, oranges or grapefruit; next to the lower edge of the lid (TA) the juice collecting tray (104) is placed which has a handle (112) for holding said tray and pulling or pushing to generate a sliding movement in or out and to be able to empty or remove the juice from said tray When it is already full and vice versa when it is already empty, place it in the collection position.

Figure 18 shows a perspective view of the juice juicer without casing, the engine cover (100), the ramps, the tray (104) and the upper roller or spool (31) as well as the front cover (TA) are shown ). The rear face of the motor cover (100) shows the location of the motor (15), the spindle (12) that transmits the movement to the gear wheel (R5) mounted on the shaft (5), the latter in turn transmits the movement to the wheel (R4) mounted on the axle (4), then to (R3) mounted on the axle (3) and jointly to the wheels (R2) and (R1) mounted on the axles (2) and (1) respectively, which transmit the energy of movement to the lower rollers or volute and upper or spool (31); The whole transmission system as motor and gears are secured by means of a plate (53) which prevents the axes (1) and (2) from leaving their direction of rotation, when the turn is forced with a very fruit The rollers for squeezing are placed one on top of the other (the male convex surface inside the female concave surface) and thus they are each mounted on their respective axis to define an empty space between the rotating surfaces thereof; the front cover (TA) is placed on which the shaft (2) is fastened so that the spool (31) can rotate and the juice is squeezed by the pressure and by the action of the parallel non-coinciding lines of pins (32) which prevent the bagasses from getting stuck in the rollers.The supply ramp is in its folded position of which only the section (144) is shown, the evacuation chute (24) is located in its position of use by means of the waterproof (161) and the rounded output end (163). The collection tray (104) is shown in its position of use and on the rear face where there is a central pouring spout.

Figure 19 is a perspective view without a casing showing the position of the rollers for squeezing the juice and the front face of the collection tray with the handle. The motor cover (100) holds the shafts (1) and (2) on which the volute (20) and the spool (31) are mounted, which have a convex surface and a complementary concave surface with parallel non-coincident lines of pins ( 26) and (31), respectively. Said surfaces are spaced a distance regulated by the three positions of the front knob (103), said closest position is suitable for squeezing lemons, the intermediate position is suitable for squeezing oranges and the most open position is suitable for squeezing grapefruit, said position it is selected by pulling and rotating, then releasing said knob, another position is selected in the same way; the bagasse of said fruits is expelled by means of the joint rotation of the volute and the spool with the help of the grip of the lines of pins on their surfaces, it expels the bagasse through the evacuation ramp (24). The spool rotates counterclockwise and the scroll rotates clockwise, with this coordinated turn they catch the fruit halves, press it to squeeze it and when it no longer has juice they expel it as waste , then traps another half of fruit and follows the process continuously.

Claims (14)

1. - Juice squeezer consisting of: an internal lid of rectangular shape with the arched upper side used as a support for motor and gears, said lid with a flat front face and a rear face where a series of outgoing seats are located for fastening the engine, axle clamping plate, the casing and the set of cogwheels or gears, two bushings where in each one an upper and lower drive shaft is coupled; a reel-shaped squeezing roller that generates a female rotating concave surface with a plurality of pins aligned on the surface of the reel, said roller mounted on the upper drive shaft; a volute-shaped squeezing roller that generates a male rotating convex surface with a plurality of pins aligned on the surface of the volute, said roller mounted on the lower drive shaft; a feeding ramp located on the side of the rollers, through whose rails the fruit halves slide to the space defined between the two rollers; an ejection ramp located on the side of the rollers and leading to the bagasse from the space defined between the two rollers towards the outside of the extractor; a housing with base, two side windows, an open front face, which covers the set of gears as well as the engine and the intermediate zone where the rollers are located; a cap that covers the front face of the casing and that is secured thereto, said casing engages the upper shaft on which an outer knob is positioned for positioning thereof; a tray for collecting the juice, which is located in a sliding way inside the lower part of the casing.

2. - The juice squeezer according to claim 1, further characterized in that the rear face of the internal support lid has four seats to secure the housing, three seats for coupling gear shafts, five seats for holding the motor and the worm , a clamping plate, an upper bushing and a lower bushing in the middle part of said lid in which the drive shafts of the rollers are coupled to squeeze the juice.

3. - The juice squeezer according to claim 1, further characterized in that the transmission system consists of five cogwheels with a dense center, two drive shafts on which the spool and the volute are mounted, respectively.

4. - The juicer according to claim 1, further characterized in that the motor is coupled with a spindle or worm that communicates the rotational movement to the gears or sprockets, which rotate the spool in the opposite direction to the hands of the watch and the scroll in the clockwise direction.

5. - Juice squeezer according to claim 1, further characterized in that the upper drive shaft has an off-center intermediate section that when rotating serves to define the position with respect to the height of the spool, thereby defining the spacing between the surface of the spool and the scroll.

6. - The juice squeezer according to claim 1, further characterized in that the lower drive shaft has a cross-section in the form of a straight cylinder.

7 -. 7 - The juicer according to claim 1, further characterized in that the spool and the volute are coupled one on top of the other, such that, the male surface of the lower volute rotates in the vicinity of the female surface of the spool higher.

8. - The juice squeezer according to claim 1, further characterized in that the spool and the scroll have a concave surface (female) and a convex surface (male) with a plurality of pins arranged in non-coincident rows on each.

9. - The juice squeezer according to claim 1, further characterized in that the surfaces of the rotating rollers define a gap between them for the halves of the fruits to pass through.

10. - The juicer according to claim 1, further characterized in that the casing is of a single piece and covers the back, side, the base and upper sides of the extractor, the front face is completely uncovered to place the front cover and the collection tray, on each of the lateral faces a window is defined, on whose external lower edges the feeding ramp and the evacuation ramp are placed.

11. - The juice squeezer according to claim 1, further characterized in that the feed ramp defines with parallel ribs on its upper face three zones of canilles, central for lemons, intermediate for oranges and end for grapefruit.

12. - The juicer according to claim 1, further characterized in that the tray slides outwards and inwards from the front of the casing of the apparatus to collect and empty the juice.

13. - The juice squeezer according to claim 1, further characterized in that the external positioning knob of the upper roller has three positions defined for grapefruits, oranges and lemons.

14. - The juice squeezer according to claim 1, further characterized in that the two rollers have a hollow body with a central through hole.