CN217429735U

CN217429735U - Juice extractor

Info

Publication number: CN217429735U
Application number: CN201990001359.7U
Authority: CN
Inventors: 金煐麒; 郑性河; 姜炳浩; 金大一; 金相泳; 周珉儿; 金宗铉
Original assignee: Hurom Co Ltd
Current assignee: Hurom Co Ltd
Priority date: 2019-04-05
Filing date: 2019-12-18
Publication date: 2022-09-16
Anticipated expiration: 2029-12-18
Also published as: WO2020204307A2; WO2020204307A3; KR20200001641U; KR200493891Y1

Abstract

The utility model relates to a juicer, the utility model discloses a juicer's characterized in that, include: a main body including a driving shaft protruding to an upper portion; a housing having an upper portion opened to form a feed port for receiving a material, a juice discharge port for discharging juice extracted from the material and a residue discharge port for discharging residue, the housing being installed at an upper portion of the main body; and a screw rod disposed at a lower end portion inside the housing and coupled to the driving shaft to rotate, the screw rod including: a screw body rotating around a rotation axis; and more than one screw thread which is formed on the outer circumferential surface of the screw body in a protruding way and is used for crushing, squeezing and conveying the material which is put in through the feed port and is positioned between the screw thread and the feed port to generate juice.

Description

Juice extractor

Technical Field

The present invention relates to a juicer, and more particularly, to a juicer that generates juice by squeezing and crushing vegetables, fruits, and the like.

Background

For health, there are many cases where green juice or fruit juice is directly produced and consumed at home, and for this reason, many devices capable of simply producing juice from vegetables, fruits, and the like at home have been disclosed.

Conventionally, juice makers produce juice by a centrifugal separation method in which raw materials are put into a feed port and crushed by a blade rotating at high speed. However, in the process of high-speed crushing, the original taste and nutritional ingredients of the materials can be damaged, green juice is difficult to prepare by using vegetables of stems or leaves, fruit juice such as kiwi fruits or strawberries with high viscosity is difficult to prepare, and soybean milk cannot be prepared by using soybeans at all.

In order to solve the above-mentioned problems, korean patent No. 10-0793852 discloses a method of squeezing and pulverizing materials between a mesh cylinder and a screw rotating at a low speed, which has the effect of making soybean milk by using the principle of grinding and squeezing soybeans through a grindstone, and making fruit juice by grinding and squeezing fruits having high viscosity such as tomatoes, kiwis, strawberries, etc. on a grating plate, and thus can solve the above-mentioned problems of the conventional juicer.

However, in this case, the size of the screw and the size of the feed port into which the material of an appropriate size is fed are determined depending on the size of the screw, and therefore, there is a problem that the material needs to be cut into small pieces in advance before the material is fed into the feed port.

Therefore, in korean patent No. 10-1270140, the size of the feed opening is increased, and after a large-sized material is crushed in advance by the crushing unit and the crushing processing unit, the crushed material is supplied to the eccentric side of the upper portion of the screw, so that juice can be extracted from the large-sized material without increasing the size of the screw.

However, in this case, since the structure of the conventional juicer that fixedly supports the upper and lower ends of the screw rotation shaft cannot be eliminated, the feed port for receiving a large-sized material is formed in a shape that protrudes outward at a position eccentric to one side, and is not formed in the center of the upper portion of the screw, which causes problems that the shape of the juicer becomes large and complicated, and that the structure for crushing the material before juicing becomes complicated, such as the crushing portion and the crushing processing portion.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a juicer which can crush, convey and squeeze a material having a radius larger than a radius of a screw supplied to an open feed port above the screw, even if only a lower end of a rotary shaft of the screw is supported, without having a structure for supporting the upper end of the rotary shaft of the screw.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Purpose accessible the utility model discloses a juicer realizes that this juicer includes: a main body including a driving shaft protruding to an upper portion; a housing having an upper portion opened to form a feed port for receiving a material, a juice discharge port for discharging juice extracted from the material and a residue discharge port for discharging residue, the housing being installed at an upper portion of the main body; and a screw rod disposed at a lower end portion inside the housing and coupled to the drive shaft to rotate, the screw rod including: a screw body rotating around a rotation axis; and more than one screw thread which is formed on the outer circumferential surface of the screw body in a protruding way and is used for crushing, squeezing and conveying the materials which are put in through the feed port and positioned between the screw thread and the feed port to generate juice.

Here, one of the screw threads of the screw may be formed to extend in a spiral shape upward of the screw body.

Here, the case may include: a lower casing in which the screw is disposed, the screw being pressed to separate the material into juice and sludge, the juice discharge port and the sludge being formed at an outer side of the lower casing in a spaced manner; and an upper housing coupled to an upper portion of the lower housing and having a screw thread extending upward of the screw body therein, the upper housing forming a space in which a material is placed through an open feed port in the upper portion.

Here, the juice extractor may further include a juice extractor disposed between the housing and the screw to surround the screw, and an outflow hole for allowing juice generated by pressing and conveying the material by rotation of the screw to flow out to the outside and to be separated from the dregs.

Here, the juice extracting cartridge may include: an inner module including an inner plate portion having both open ends and a plurality of slits formed in the inner plate portion; and an outer module including an outer plate portion detachably accommodating the inner module therein and a rib protruding from an inner surface of the outer plate portion so as to be inserted into the slit of the inner plate portion, wherein a slit serving as an outflow hole through which the juice flows out is formed between the slit and the rib when the outer module is surrounded and coupled to the inner module.

Here, the screw may include: a first module comprising a plurality of slots; and a second module detachably coupled to the first module and including a rib inserted into the slit, a gap being formed between the rib and the slit when the first module and the second module are coupled, so that the juice separated from the outside flows into the inside of the screw.

Here, the juice extractor may further include a juice extractor disposed between the housing and the screw to surround the screw, the juice extractor having a discharge hole formed therein for discharging juice, which is produced by pressing and conveying the material by rotation of the screw, to the outside and separating the juice from the residue, and a pressing step or a pressing protrusion formed at a lower end of the upper housing for pressing and fixing an upper end of the juice extractor.

Here, the housing may have at least one crushing stopper formed on an inner side surface thereof, the crushing stopper protruding in a longitudinal direction of the housing and crushing the material by interaction with the screw flight extending upward of the screw body.

Here, one of the screw flights of the screw may be formed to extend in a spiral shape toward an upper end of the screw body, and the screw flight at the upper end of the screw body is formed to protrude in a horizontal direction in a radial direction of the screw body to crush the material.

Here, the inner side surface of the housing may form a space apart from the screw thread formed at the upper end of the screw body.

Here, the housing may be formed such that a cross-sectional area formed by an inner side surface of the housing becomes wider toward an upper portion in a portion where an upper end portion of the screw rod is located.

Here, the partitioned space may be formed at one eccentric side of the housing.

Here, the screw body may be formed with a crushing space that is reduced in cross-sectional area as it goes from the lower portion toward the upper end portion and extends to an eccentric side, thereby crushing the material put in from the upper portion.

Here, a crushing blade may be formed on the screw body, extending toward the crushing space, and crushing the material put into the crushing space.

According to as above the utility model discloses a juice extractor has following advantage: even if the size of the material is larger than the radius of the screw rod, the material can not be cut in advance, and the material can be directly placed into a juice extractor for juice extraction.

Moreover, the following advantages are provided: the juice squeezing machine can squeeze juice by rotating the screw without supporting the upper end of the rotating shaft of the screw, so that a material with a size larger than the radius of the screw can be put into the upper part of the screw through the open feed port, and the shell can be made into a more compact and simple shape.

Moreover, the following advantages are provided: solves the problem of the blockage of the mesh in the prior mesh cylinder, and is simple to clean.

Drawings

Fig. 1 is a sectional view of a juicer according to a first embodiment of the present invention.

Fig. 2 and 3 are perspective views of the screw rod according to the first embodiment of the present invention shown in fig. 1.

Fig. 4 is a top view of fig. 2.

Fig. 5 is a side view of fig. 2 shown at various angles.

Fig. 6 is a perspective view of a screw according to the modification of fig. 2.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a side view of fig. 6 shown at various angles.

Fig. 9 is a perspective view of a screw according to another modification of fig. 2.

Fig. 10 is a top view of fig. 9.

Fig. 11 is a side view of fig. 9 shown at various angles.

Fig. 12 is a perspective view of a screw according to a second embodiment of the present invention.

Fig. 13 is a top view of fig. 12.

Figure 14 is a side view of a screw according to a third embodiment of the invention.

Fig. 15 and 16 are exploded perspective views of the juice extractor shown in fig. 1.

Fig. 17 is an assembled perspective view of the juice extractor of fig. 15 and 16.

Fig. 18 is a sectional view of a juicer according to a second embodiment of the present invention.

Fig. 19 is a perspective view of the screw shown in fig. 18.

Fig. 20 and 21 are exploded perspective views of fig. 19.

Fig. 22 is a perspective view of a screw according to a modification of fig. 19 to 21.

Fig. 23 is a perspective view of a screw according to another modification of fig. 19 to 21.

Fig. 24 is a perspective view of the housing taken along a-a' of fig. 18.

Fig. 25 is a view showing a screw and a housing of a juicer according to a third embodiment of the present invention.

Fig. 26 is a perspective view of the screw of fig. 25.

Fig. 27 is a view showing a screw and a housing of the juicer according to the modification of fig. 25.

Fig. 28 is a view showing a screw and a housing of a juicer according to a fourth embodiment of the present invention.

Detailed Description

The detailed description and drawings include specific details of embodiments.

The advantages and features of the present invention, and the methods for attaining them, will become more apparent and the invention itself will be better understood by reference to the drawings and the following detailed description of the embodiments. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in various forms, and the embodiments are only provided to completely disclose the present invention, and to completely inform the scope of the present invention to those skilled in the art, the present invention should be defined by the scope of the claims. Like reference numerals refer to like structural elements throughout the specification.

It should be noted that the respective configurations shown in the drawings are arbitrarily illustrated for convenience of description, and therefore the present invention is not necessarily limited to the contents shown in the drawings, and the sizes and shapes of the components shown in the drawings may be exaggeratedly illustrated for the sake of clarity of description and convenience. Therefore, terms specifically defined in consideration of the structures and actions of the present invention may be different depending on the intention or the custom of the user or the operator, and the meanings of these terms should be determined based on the entire contents of the present specification.

In the present specification, unless otherwise specified, "upper side", "upper end" or terms similar thereto refer to the material-introducing side or a portion or end adjacent thereto, and "lower side", "lower end" or terms similar thereto refer to the opposite side of the material-introducing side or a portion or end adjacent thereto.

The present invention will be described below with reference to the accompanying drawings illustrating a juicer according to an embodiment of the present invention.

The juice extractor according to the first embodiment of the present invention may be configured to include a main body 100, a housing 200, a screw 300, and a juice extracting tube 400.

The main body 100 is supported from a floor surface, and a driving unit 110 for rotating the screw 300 may be disposed therein. The driving unit 110 may be configured by a motor and a speed reducer, but may be configured by only a low-speed motor without a speed reducer. Unlike the conventional blender in which a material is finely crushed by rotating a rotary blade at a high speed, the present invention relates to a juicer in which juice and dregs are separated and juiced by a method of squeezing and crushing the material by rotating a screw 300 at a low speed, and thus the screw 300 is rotated at a low speed.

At this time, the driving shaft 120 of the motor protrudes to the upper portion of the body 100, and the driving shaft 120 is combined with the screw 300 to rotate the screw 300.

The casing 200 has a container shape as a whole, is connected to the upper portion of the main body 100, and accommodates a screw 300 and a juice extracting barrel 400, which will be described later, in the casing 200. The case 200 may be formed in a form in which the entire upper surface is opened, and a material may be introduced into the inside of the case 200 through the feed port 230 as the opened upper surface. Thus, as shown, material having a size greater than the radius of the screw 300 may also be placed into the interior of the housing 200. Although not shown, a cover (not shown) for opening and closing the upper feed opening 230 of the housing 200 may be formed. The cover may also be formed with an additional insertion hole for limiting the size of the material to be inserted into the housing 200 to be larger than the radius of the screw 300 but within a prescribed range.

A waterproof cylinder 240 is formed to protrude upward from the center of the bottom surface of the housing 200, and a through hole 242 is formed in the waterproof cylinder 240, and a lower rotary shaft 350 of a screw 300, which will be described later, is inserted through the through hole 242 to be coupled to the drive shaft 120 below the housing 200. The waterproof cylinder 240 is formed to protrude upward for preventing juice from flowing into the driving part 110 through the through hole 242. A seal ring (not shown) made of rubber, silicone, or the like is inserted into the edge of the through hole 242, thereby more effectively preventing juice from flowing into the main body 100.

A screw 300 is disposed at a lower end portion inside the housing 200, and as shown in the drawing, a standby space in which the material put through the feed port 230 waits before juicing is formed inside an upper portion of the housing 200 located above the screw 300.

Further, a juice discharge port 250 for discharging juice squeezed from the material from the inside of the housing 200 and a residue discharge port (not shown) for discharging residue are formed at a distance from the outside of the lower end portion of the housing 200.

As will be described later, the juice flowing out of the juice extracting tube 400 through the outflow hole of the juice extracting tube 400 flows to the juice outlet 250 communicating with the bottom surface of the housing 200 and is discharged, and the residue separated by the juice extraction can be discharged to the outside of the juice extracting tube 400 through the bottom surface or the lower portion side of the juice extracting tube 400, and finally can be discharged from the residue outlet of the housing 200 communicating with the outside of the juice extracting tube 400.

The screw 300 is disposed at the lower end of the housing 200, and the screw 300 can be mounted by inserting the driving shaft 120 of the body 100 into the shaft hole 351 of the lower rotary shaft 350 extending downward from the center of the screw 300.

In this embodiment, the housing 200 may be formed separately into a lower housing 210 and an upper housing 220, the lower housing 210 having a screw 300 disposed therein and the juice outlet 250 and the slag outlet formed at the outer side of the lower end thereof, and the upper housing 220 connected to the upper side of the lower housing 210 and having a space where the material put in from the feed inlet 230 opened at the upper portion stays.

At this time, as shown in the drawing, a pressing step 222 or a pressing protrusion 224 is formed at a lower end portion of the upper case 220, so that the juice extracting tube 400 disposed inside the lower case 210 is pressed downward to fix the position of the juice extracting tube 400 when being coupled with the lower case 210. In fig. 1, the pressing step 222 is formed to support the upper end edge side and the upper surface of the inner module 410 for constituting the juice extracting tube 400 to press in the lower direction, and the pressing protrusion 224 is formed to protrude in the lower direction to press the edge upper surface of the outer module 450 constituting the juice extracting tube 400 in the lower direction, but is not limited thereto and may be changed into various forms.

Further, at least one pulverizing chuck 270 protruding in the up-down direction may be formed on the inner side surface of the upper case 220 along the circumferential direction of the inner side surface. As will be described later, the screw 300 according to the present invention may be formed in a shape in which the screw flight 320 extends upward of the screw body 310. At this time, the end of the screw flight 320 extending upward of the screw body 310 is positioned at the lower end of the upper housing 220. At this time, even if a large material such as an uncut apple or orange is put into the upper housing 220, the material can be efficiently crushed by the interaction between the screw flight 320 extending above the screw body 310 and the crushing table 270 protruding in the longitudinal direction along the inner surface of the upper housing 220 while rotating. That is, in a state where a large-sized material is caught by the grinding table 270, the material can be ground by pressing and mutual cutting due to the rotation of the screw flight 320 extending above the screw body 310. At this time, when the screw 300 rotates, the pulverized material can be easily moved toward the lower side of the screw 300 along the screw flight 320 inclined downward.

In the present embodiment, the case where the housing 200 is separated from the upper housing 220 and the lower housing 210 is described by taking the case where the crush relief 270 is formed in the upper housing 220 as an example, but as described later with reference to fig. 18, the housing 200 may be formed integrally without being separated into the upper housing 220 and the lower housing 210. At this time, the pulverizing chuck 270 may be formed to be protruded in the longitudinal direction along the circumferential direction of the inner side surface of the casing 200, wherein the lower end of the pulverizing chuck 270 is preferably formed to extend at least to the upper end portion of the screw 300 where the screw flight 320 extending above the screw body 310 is located, so that the pulverizing chuck 270 and the screw flight 320 extending to the upper portion of the screw body 310 can interact with each other.

In this case, the crush pads 270 are preferably formed to protrude so that the direction thereof extends vertically downward from the inner surface of the case 200, but may be formed to be inclined at a predetermined angle. When a plurality of crush pads 270 are formed along the inner surface of the housing 200, the inclination angles of the crush pads 270 may be different from each other.

The screw 300 is disposed at a lower end portion of the housing 200, receives power from the driving shaft 120 of the main body 100, rotates at a low speed around a rotation shaft, moves a material located between a juice extracting barrel 400 and the screw 300, which will be described later, downward, and extracts juice by pressing and crushing the material through interaction between the screw 300 and the juice extracting barrel 400.

A lower rotation shaft 350 protruding downward is formed at the lower portion of the screw 300, and the lower rotation shaft 350 is coupled to the driving shaft 120 of the motor to perform a rotational motion, as described above. At this time, a shaft hole 351 for inserting the driving shaft 120 is formed at the lower rotating shaft 350, so that the screw 300 can be coupled to the driving shaft 120. Preferably, the shaft hole 351 is formed as an angular shaft hole 351, and the drive shaft 120 is also formed as an angular shaft, so that the coupling between the drive shaft 120 and the screw 300 can be made strong.

Referring now to fig. 2-14, various embodiments of a screw 300 according to the present invention will be described in more detail.

Fig. 2 and 3 are perspective views of a screw according to a first embodiment of the present invention shown in fig. 1, fig. 4 is a plan view of fig. 2, fig. 5 is a side view of fig. 2 shown at various angles, fig. 6 is a perspective view of a screw according to a modification of fig. 2, fig. 7 is a plan view of fig. 6, fig. 8 is a side view of fig. 6 shown at various angles, fig. 9 is a perspective view of a screw according to another modification of fig. 2, fig. 10 is a plan view of fig. 9, fig. 11 is a side view of fig. 9 shown at various angles, fig. 12 is a perspective view of a screw according to a second embodiment of the present invention, fig. 13 is a plan view of fig. 12, and fig. 14 is a side view of a screw according to a third embodiment of the present invention.

First, referring to fig. 2 to 11, a screw 300 according to a first embodiment of the present invention will be described.

The screw 300 may be formed to include a screw body 310 and a screw thread 320 protruding in a spiral shape on an outer side of the screw body 310.

As shown, the screw body 310 may be divided into upper and lower portions centering on the maximum radius of the screw 300. The lower portion of the screw body 310 is formed such that the radius thereof becomes gradually smaller toward the lower portion, and by providing such that the radius thereof becomes smaller toward the lower portion, a space where dregs separated by juicing are located can be formed. However, the shape of the lower portion of the screw body 310 is not limited to this, and may be formed in a straight line downward without changing the radius, for example.

Also, the upper portion of the screw body 310 is formed such that the radius thereof becomes gradually smaller as it goes toward the upper portion, and as shown in the drawing, the upper portion of the screw body 310 has a larger variation width of the radius according to the height variation than the lower portion of the screw body 310. The screw body 310 is formed such that the radius of the foremost end is smallest and gradually increases as the radius goes to the lower portion, and in this shape, a space is formed in which a large-sized material can be conveyed while gradually decreasing in size by pressing and crushing. In other words, since the upper diameter of the screw body 310 becomes gradually larger as it goes to the lower portion, the size of the space for conveying the material, which the screw body 310 forms together with the screw flight 320, becomes gradually smaller in the conveying direction of the material. That is, by the rotation of the screw 300, the material is pressed and pulverized to be gradually reduced in size while moving downward of the screw 300 along the screw flight 320 formed downward along the gradually reduced conveying space.

The screw flight 320 is formed to protrude in a spiral shape on the outer circumferential surface of the screw body 310, and the juicing object is squeezed and conveyed downward by the screw flight 320 through a narrow gap between the screw 300 and the juicing barrel 400. At this time, it is preferable that the screw thread 320 is protruded to be in contact with or close to the juice extracting barrel 400 or the housing 200. As described above, since the radius of the upper portion of the screw body 310 becomes smaller toward the upper portion, the protruding height of the screw flight 320 becomes larger toward the upper portion of the screw body 310.

The screw thread 320 may be formed in one or more, and in the present invention, as shown in the drawing, one of the threads is formed to extend in a spiral shape upward of the screw body 310 (hereinafter, referred to as "extension of the first screw thread 320-1"). Accordingly, the screw body 310 does not exist at a height position where the extension of the first screw flight 320-1 is formed, and thus even when the extension of the first screw flight 320-1 is considered, a space where the material having a size larger than the radius of the screw 300 is located can be formed, and when the screw 300 rotates in the space, the material can be pulverized by the interaction between the extension of the first screw flight 320-1 and the pulverizing chuck 270 formed at the inner side surface of the housing 200. At this time, the surface of the screw flight 320 is formed to be inclined downward, so that the pulverized material can be conveyed downward along the screw flight 320, and the juicing is performed at the lower end portion of the screw 300.

As described above, according to the present invention, since the structure for supporting and rotating both ends of the rotation shaft of the screw 300 is eliminated and the structure for supporting the upper rotation shaft above the screw 300 is only supported by the lower rotation shaft 350, the structure for supporting the upper rotation shaft is not required. Therefore, the entire space above the screw 300 can be used, so that a large-sized material can be directly put in through the feed port 230 above the screw 300 and juice extraction can be performed.

At this time, as shown in fig. 2 to 5, one end of the extension portion of the first screw thread 320-1 may be shaped in an arc shape depressed in a direction opposite to a direction in which the first screw thread 320-1 extends above the screw body 310, so that the first screw thread 320-1 at the upper end may have a hook shape as a whole.

Also, as shown in fig. 6 to 8, one end of the extension of the first screw thread 320-1 may be formed in a straight line shape, so that the first screw thread 320-1 at the upper end may have a semicircular shape as a whole.

Further, as shown in fig. 9 to 11, one end of the extension portion of the first screw thread 320-1 may be formed in an arc shape protruding in a direction in which the first screw thread 320-1 extends upward of the screw body 310, so that the first screw thread 320-1 at the upper end may have a cotyledon shape as a whole.

Also, as shown in the drawing, a second screw flight 320-2 formed to be spiral downward from the upper portion of the screw body 310 may be formed, and another plurality of flights 320-3 may be formed between the first screw flight 320-1 and the second screw flight 320-2 at the lower portion of the screw body 310. Accordingly, the width formed between the adjacent screw flights 320 of the screw body 310 is formed to have a relatively wide interval at the upper portion of the screw body 310, and a relatively narrow interval at the lower portion of the screw body 310 due to the plurality of screw flights 320-1, 320-2 and 320-3. That is, the upper side of the screw 300 mainly performs a function of crushing a large-sized juice-extracting object, and the lower side of the screw 300 mainly performs a function of extracting juice by crushing and squeezing.

Further, a plurality of dross guiding steps 330 are formed in the circumferential direction, and the dross guiding steps 330 protrude outward in the radial direction of the lower end portion of the screw main body 310. The dross guiding step 330 performs a function of sweeping down dross separated by juicing and conveyed toward the lower side of the juicing barrel 400 while the screw 300 rotates. The dross guide step 330 formed on the outer circumferential surface in the radial direction of the lower end portion of the screw 300 smoothly removes dross caught under the juice extracting tube 400, thereby further improving the juice extracting efficiency.

Next, a screw 300 according to a second embodiment of the present invention will be described with reference to fig. 12 to 13. For convenience of explanation, the portion of the screw body 310 having a large change in shape is divided into a lower portion, an upper portion, and an upper end portion as shown in the drawings.

As a whole, unlike the previous embodiments, the screw body 310 of the present embodiment does not have a shape symmetrical to the left and right about the rotation axis, but has a shape eccentric to one side.

More specifically, the following description is given. Similar to the previous embodiment, the diameter of the lower portion of the screw body 310 is constant or has little change in diameter. The juice squeezing by the crushing and squeezing is performed by the strong pressure between the screw 300 and the juice extracting tube 400 by the rotation of the screw 300 at the lower portion of the screw body 310. Also, although not shown, a lower rotation shaft 350 coupled with the drive shaft may be formed at the center of the lower portion of the screw body 310.

The upper portion of the screw body 310 is formed in an eccentric tapered shape. At this time, as shown in the drawing, the eccentric taper shape may be formed eccentrically such that the sectional area is gradually reduced as it goes to the upper portion in a manner of rotating in the extending direction of the screw. Also, the eccentric taper shape may have an eccentric taper shape as follows: that is, when cut in a side view, the diameter is gradually reduced toward the upper portion, and the screw body 310 has a nearly straight triangular shape with one side extending from the lower portion of the screw body in a vertical manner and the other side inclined toward the side extending toward the upper portion. Therefore, a crushing movement space can be formed in a direction opposite to the eccentric direction, and the material is crushed in the crushing movement space and then moved downward. At this time, the eccentric cone may be formed in various shapes in addition to the aforementioned shape as long as the upper portion of the screw body 310 is eccentric and a pulverizing moving space can be formed in a direction opposite to the eccentric direction. At this time, a portion of the screw flight 320 formed at the lower portion of the screw body 310 may extend toward the upper portion of the screw body 310 and be formed to protrude from the screw body 310. Therefore, in the upper portion of the screw body 310, the objects to be juiced, which are crushed by the crushing blades 340 at the upper end portion of the screw, are crushed and juiced into a smaller size while gradually moving toward the lower portion of the screw body 310 along the screw flight 320.

A crushing blade 340 protruding to one side is formed at an upper end portion of the screw body 310. At this time, as shown in fig. 13, the crushing blade 340 may be formed to be protruded in a circumferential direction in which the screw 300 rotates on an eccentric upper end of an upper portion of the screw body 310, but is not necessarily limited thereto. That is, in fig. 13, the crushing blade 340 may be formed to protrude in the center direction of the rotation axis of the screw body 310. At this time, the upper surface of the upper end of the screw body 310, in which the crushing blades 340 are formed, may form a horizontal plane, and the lower surface may form an inclined plane so as to form the protruded crushing blades 340. The screw thread 320-1 extending toward the upper portion of the screw body 310 may be extended to be formed to the upper surface of the upper end portion of the screw body 310, but is not necessarily limited thereto. That is, the screw flight 320-1 does not necessarily have to extend to the upper end of the screw body 310.

At this time, the second screw flight 320-2 protruded thereunder is preferably formed to be more protruded in a radial direction than the first screw flight 320-1 protruded first in a direction opposite to the eccentric direction at the upper portion of the screw body 310. That is, the second screw thread 320-2 is formed to be more protruded in a radial direction and to be closer to the juice extracting tube 400, whereas the first screw thread 320-1 forms a spaced space with the juice extracting tube 400. As the size of the crushed material becomes smaller toward the lower side of the screw 300, the material located in the space between the first screw flight 320-1 and the juice extractor 400 can be easily crushed and cut into smaller sizes.

Although the screw flight 320 is not formed to extend upward of the screw body 310 in the present embodiment as compared with the previous embodiments, as shown in fig. 13, as the upper portion of the screw body 310 is eccentrically formed, a space capable of receiving the juice material having a radius larger than that of the screw 300 is formed. Therefore, as the screw 300 rotates, the juice-extracted material is crushed by the crushing blade 340 at the upper end of the screw body 310 and then moves to the upper portion of the screw body 310.

In the present embodiment, as in the previous embodiments, only the lower rotary shaft 350 of the screw 300 is supported, and the upper portion of the screw 300 is not supported but opened. Also, a first screw thread 320-1 and a second screw thread 320-2 may be formed, the first screw thread 320-1 extending from the uppermost portion of the screw body 310 to the lower end of the screw body 310 and formed to protrude, the second screw thread 320-2 extending from the lower portion of the first screw thread 320-1 to the lower end of the screw body 310 and formed to protrude, and another plurality of threads 320-3 may be formed between the first screw thread 320-1 and the second screw thread 320-2. Further, a plurality of dross guiding steps 330 may be formed at a lower end of the screw main body 310 to protrude radially outward in a circumferential direction of the screw main body 310.

Next, referring to fig. 14, a screw 300 according to a third embodiment of the present invention will be explained.

In the present embodiment, as shown in the drawing, the screw body 310 may be divided into a lower portion and an upper portion, the lower portion of the screw body 310 is configured to be bilaterally symmetrical, and the diameter of the lower portion of the screw body 310 is constant or there is little diameter variation, similar to the previous embodiments. The juice squeezing by the crushing and squeezing is performed by the strong pressure between the screw 300 and the juice extracting tube 400 by the rotation of the screw 300 at the lower portion of the screw body 310. Although not shown, a lower rotation shaft 350 coupled to the driving shaft 120 may be formed at the lower center of the screw body 310.

The upper portion of the screw body 310 becomes smaller in sectional area toward the upper portion and is eccentric to one side. Therefore, the upper end of the screw body 310 is not positioned on the rotation axis of the screw body 310 but is positioned eccentrically in the radial direction.

At this time, in the present embodiment, a plurality of screw flights 320 formed to protrude along the screw body 310 may be formed, and particularly, the screw flight 320-1 located at the uppermost portion of the first screw flight 320-1 formed to extend to the uppermost portion of the screw body 310 may be formed to protrude upward long. At this time, the screw thread 320-1 is preferably protruded long to be close to the juice extracting barrel 400, but the tip of the screw thread 320-1 is positioned lower than the upper end surface of the screw body 310.

Accordingly, a space between the upper end of the screw body 310 located at the eccentric position and the first screw flight 320-1 extending to the uppermost part can receive the juice extracting material having a radius larger than that of the screw 300. Therefore, the mounted juice extracting material is cut and pulverized by the first screw flight 320-1 extending to the upper portion of the screw 300 by the rotation of the screw 300, and then moved to the lower portion of the screw body 310.

In the present embodiment, as in the previous embodiments, only the lower rotary shaft 350 of the screw 300 is supported, and the upper portion of the screw 300 is not supported but opened. Also, a first screw thread 320-1 and a second screw thread 320-2 may be formed, the first screw thread 320-1 extending from the uppermost portion of the screw body 310 to the lower end of the screw body 310 and formed to protrude, the second screw thread 320-2 extending from the lower portion of the first screw thread 320-1 to the lower end of the screw body 310 and formed to protrude, and another plurality of threads 320-3 may be formed between the first screw thread 320-1 and the second screw thread 320-2. Further, a plurality of dross guiding steps 330 protruding radially outward in the circumferential direction of the screw body 310 may be formed at the lower end of the screw body 310.

The juice extracting cartridge 400 is explained with reference to fig. 1 again as follows. The juice extractor 400 is coupled to the housing 200 inside the housing 200, and the screw 300 is housed inside the juice extractor 400. That is, the juice extracting cartridge 400 is located between the housing 200 and the screw 300. The material introduced from the inlet port 230 and positioned at the upper portion of the housing 200 is pulverized by the interaction of the first screw thread 320-1 and the pulverizing chuck 270 and then is conveyed downward. Then, the material located between the juice extractor 400 and the screw 300 is pressed and pulverized while being conveyed downward along the screw 300. In this process, the juice extracted through the outflow hole formed at the juice extracting barrel 400 is discharged to the outside of the juice extracting barrel 400, and finally discharged through the juice discharge port 250 of the housing 200, and the residue separated from the juice is transferred to a space below the juice extracting barrel 400, and finally discharged through the residue discharge port of the housing 200.

Next, referring to fig. 15 to 17, a juice extracting tube 400 according to an embodiment of the present invention will be described in more detail.

Fig. 15 and 16 are exploded perspective views of the juice extractor of fig. 1, and fig. 17 is an assembled perspective view of the juice extractor of fig. 15 and 16.

As shown, the juice extractor 400 according to the present invention may be constructed by a combination of an inner module 410 and an outer module 450. Here, the inner module 410 and the outer module 450 may be made of a material such as Polyetherimide (PEI).

The inner module 410 is substantially cylindrical and has upper and lower sides opened. Here, the inner module 410 includes a plurality of inner plates 411, and a plurality of slits 412 are formed by the plurality of inner plates 411.

Here, the plate portion is named for convenience of explanation of the present invention, and in the cylindrical module, when it is divided into a hole portion where the slit 412 is formed and a plate portion where the slit 412 is not formed, the plate portion where the slit 412 is not formed is defined as a "plate portion".

At this time, as for the slits 412, the width of the slits 412 on the upper side may be smaller than the width of the slits 412 on the lower side. That is, the width of the slit 412 may be narrower toward the upper side. As shown in fig. 15, a step 413 may be formed in the slit 412. The width of the slit 412 on the upper side may be narrower than the width of the slit 412 on the lower side with reference to the stepped portion 413.

Also, a first rib 420 may be protrudingly formed on the inner circumferential surface of the inner plate portion 411. The first ribs 420 serve to press or crush the material by interacting with the screw flights 320 as the screw 300 rotates. Without the first rib 420, the object to be juiced may not move downward and be stagnated, or the squeezing force or the pulverizing force is low or cannot be generated.

Also, a second rib 425 protruding in the length direction may be formed on the inner side surface of the inner panel portion 411. The second ribs 425 perform a function of transferring materials put into the interior of the juice extracting drum 400 to a lower portion and crushing a juice extracting object. The second ribs 425 may perform a function of enhancing rigidity of the inner module 410 and may perform a function of guiding the objects to be juiced to the inside of the juice extracting tub 400. Also, the second ribs 425 may perform functions of adjusting the position of the screw 300 and adjusting the juicing space.

The protruding height of the second rib 425 may be formed to have the same height from the upper portion to the lower portion of the inner module 410, but may preferably be formed in a shape gradually lower as going from the upper portion to the lower portion of the inner module 410. Also, the second rib 425 is formed to be inclined downward from the upper portion of the inner module 410 toward the lower portion, and a stepped portion 426 formed to be protruded toward the screw 300 to constitute a step may be formed at a middle portion thereof. The position, number, or protrusion height of the stepped portion 426 may be variously modified depending on the shape of the screw 300 and the design condition of the screw thread 320. The number and arrangement of the second ribs 425 may be changed to various forms as needed in consideration of design conditions and juicing efficiency. In the embodiment of the present invention, the forming direction of the second rib 425 is described as an example of the vertical forming in the up-down direction of the inner side module 410, but the scope of the present invention is not limited thereto.

At this time, the first rib 420 is formed on the lower inner surface of the inner plate 411, and the second rib 425 is formed integrally from the top to the bottom on the inner surface of the inner plate 411.

Next, the outside module 450 will be explained. The outer block 450 is substantially cylindrical and includes an outer plate 451 that is open downward and a rib 452 that protrudes from an inner surface of the outer plate 451.

The outer plate portion 451 is formed to detachably (detachably) receive the inner module 410 therein. That is, the outer module 450 may be coupled to the inner module 410 so as to receive and surround the inner module 410 therein. At this time, the outside module 450 may surround the support inside module 410.

The rib 452 is inserted under the slit 412 of the inside module 410 and coupled to the slit 412 while the outside module 450 and the inside module 410 are coupled while moving up and down. At this time, slit holes, which are fine slits, are formed between the slits 412 and the ribs 452, and the juice generated inside the juice extracting tube 400 can be discharged to the outside through the slit holes.

As described above, in the present embodiment, since the slits 412 of the inner block 410 and the ribs 452 of the outer block 450 are coupled to each other, the outflow holes for discharging the juice are formed by the gaps between the slits 412 and the ribs 452, and thus, the cleaning is very easy as compared with the conventional net cylinder.

At this time, the rib 452 may be formed in a shape corresponding to the aforementioned slit 412, and the width of the rib 452 on the upper side may be smaller than the width of the rib 452 on the lower side, so that the width of the rib 452 is narrower as going to the upper side.

The rib 452 may have a stepped portion 453, and the width of the upper rib 452 may be smaller than the width of the lower rib 452 with reference to the stepped portion 453.

By the shape of the rib 452 and the slit 412 as described above, when the outer module 450 and the inner module 410 are coupled by moving up and down, the upper portion of the rib 452 having a relatively small width is inserted into the lower portion of the slit 412 having a relatively large width, and thus the outer module 450 and the inner module 410 can be easily coupled.

Further, the outer plate portion 451 may have a plurality of juice discharge holes 460 formed along the outer surface of the plate.

In this manner, juice formed inside the juice extracting tube 400 formed by coupling the inner block 410 and the outer block 450 may be discharged to the outside of the juice extracting tube 400 through the slit hole, which is a fine gap formed between the slit 412 of the inner block 410 and the rib 452 of the outer block 450, and the juice discharging hole 460 formed in the outer block 450.

At this time, the gap formed between the slit 412 and the rib 452 is preferably formed such that the width of the gap becomes larger in the radial direction, so that the juice is easily drained. Further, it is preferable that the gap is formed such that the gap width becomes smaller as it goes downward in the longitudinal direction, thereby preventing the sludge generated by more finely pulverizing as it goes downward from being discharged through the gap and supporting the strong pressure of the screw 300.

Next, a juice extractor according to a second embodiment of the present invention will be described with reference to fig. 18 to 24.

Fig. 18 is a sectional view of a juicer according to a second embodiment of the present invention, fig. 19 is a perspective view of a screw shown in fig. 18, fig. 20 and 21 are exploded perspective views of fig. 19, fig. 22 is a perspective view of a screw according to a modification of fig. 19 to 21, fig. 23 is a perspective view of a screw according to another modification of fig. 19 to 21, and fig. 24 is a perspective view of a housing cut along a-a' of fig. 18.

In the following description, a comparison is made with the embodiment described above with reference to fig. 1 to 17, and a description is given centering on differences.

First, the greatest difference compared with the foregoing embodiments is that the juice extracting cylinder 400 is disposed between the housing 200 and the screw 300 in the foregoing embodiments, but the juice extracting cylinder 400 is omitted in the present embodiment, and the shape of the screw 300 is changed instead of omitting the juice extracting cylinder 400. The screw 300 is formed by a first module 360 and a second module 380 in a separable and combinable manner in the present embodiment, and the screw 300 according to the embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

The screw 300 according to an embodiment of the present invention may be configured to include two cylindrical first and

second modules

360 and 380.

The first module 360 includes a first body 361 and a plurality of slits 362, the first body 361 is formed with a hollow inside and is substantially cylindrical with an open lower portion, and the slits 362 are formed long in a longitudinal direction along the circumference of the first body 361.

The first body 361 may have a screw thread 320 formed on an outer circumferential surface thereof diagonally with respect to a longitudinal direction.

The second block 380 may be formed of a cylindrical second body 381 whose upper portion is substantially closed, and a plurality of ribs 382, the ribs 382 protruding on the outer side surface of the second body 381 in a shape corresponding to the slits 362 of the first block 360.

The screw thread 320 may be formed on the outer circumferential surface of the second block 380, similarly to the first block 360. In the case of the second module 380, the screw thread 320 may be formed on the outer circumferential surface of the rib 382.

At this time, when the first and

second modules

360 and 380 are combined, as shown in fig. 19, the screw threads 320 formed at the first and

second modules

360 and 380 may be continuously formed. Although there may be some slight breaks in the section, a substantially continuous screw flight 320 is formed.

When the first module 360 and the second module 380 are coupled as described above, since the inner diameter of the first body 361 of the first module 360 is larger than the outer diameter of the second body 381 of the second module 380, the first module 360 surrounds and is coupled to the second module 380 in such a manner as to receive the second module 380, and when the rib 382 of the second module 380 is inserted and coupled into the slit 362 of the first module 360, a portion of the first body 361 where the slit 362 is not formed and a portion of the second body 381 where the rib 382 is not formed are coupled in such a manner as to overlap in the radial direction.

At this time, the rib 382 of the second module 380 is inserted into the slit 362 of the first module 360, and a predetermined gap is formed between the slit 362 and the rib 382. The juice may flow into the inside of the screw 300 through the gap and be discharged, and dregs after the juice is separated may be collected to the lower portion between the screw 300 and the case 200 and be discharged to the outside.

When the first module 360 and the second module 380 are coupled, a gap may be formed between the outer side surface of the second body 381 and the inner side surface of the first body 361 to form a separation space. The juice flowing into the partitioned space through the gap may be moved toward the lower portion between the first block 360 and the second block 380 by the play. At this time, a juice discharge hole 385 may be formed at the lower side of the second body 381. Juice collected in the lower part of the partitioned space between the first and

second modules

360 and 380 can flow into the inside of the screw 300 through the juice discharge hole 385.

Therefore, in comparison with the previous embodiment, in the present embodiment, there is no need to provide an additional juice extracting barrel 400 between the screw 300 and the housing 200, but the material is squeezed and pulverized between the housing 200 and the screw 300 to be separated into juice and dregs, the resultant juice flows into the interior of the screw 300 and is discharged through the juice discharge port 250, and the dregs conveyed to the lower side of the housing 200 are separated and discharged through the dreg discharge port. Therefore, the first rib 280 and the second rib 285 corresponding to the first rib 420 and the second rib 425 located on the inner surface of the inner block 410 of the juice extractor 400 may be formed on the inner surface of the housing 200 as shown in fig. 24.

The shape of the extension of the first screw thread 320-1 of the upper portion of the screw 300 is the same as that of the embodiment described above with reference to fig. 1 to 11, and as shown in fig. 22 to 23, the extension of the first screw thread 320-1 may be deformed into not only a hook shape but also a semicircular shape, a cotyledon shape, and the like.

Also, in the foregoing embodiment, the case 200 is separately formed as the lower case 210 and the upper case 220, but in the present embodiment, the case 200 is formed in a body shape. The screw 300 may be disposed at the lower end of the integrally formed housing 200, and the pulverizing chuck 270 may be formed on the inner surface of the upper end of the housing 200 as described above.

Next, a juice extractor according to a third embodiment of the present invention will be described with reference to fig. 25 to 27.

Fig. 25 is a view showing a screw and a housing of a juicer according to a third embodiment of the present invention, fig. 26 is a perspective view of the screw of fig. 25, and fig. 27 is a view showing a screw and a housing of the juicer according to the modification of fig. 25.

Next, in the description of the present embodiment, differences from the juicer of the first embodiment described above with reference to fig. 1 to 17 will be mainly described.

First, in the above embodiment, the screw flight 320 is formed to extend in a spiral shape upward of the screw body 310, but in the present embodiment, as shown in fig. 25 and 26, one of the screw flights 320 extends in a spiral shape upward, but only extends to the upper end of the screw body 310, and is not formed to extend upward of the screw body 310. At this time, as shown in the drawing, a screw flight 320 at the upper end of the screw body 310 is formed to protrude in the horizontal direction in the radial direction of the screw body 310. The screw thread 320 formed to protrude in the horizontal direction cuts and pulverizes the material introduced from the feed port 230 above the screw 300 together with the inner side surface of the housing 200.

At this time, the screw thread 320 at the upper end of the screw body 310 is formed to protrude in only one radial direction in the drawing, but may be formed to protrude in a plurality of directions including two directions. The screw flight 320 at the upper end of the screw body 310 is formed to extend linearly in the horizontal direction, but may be formed to be inclined downward at a predetermined angle, so that the pulverized material is easily conveyed to the lower portion of the screw flight 320 while being pulverized.

As in the previous embodiment, in the present embodiment, the upper portion of the screw body 310 is not rotatably supported, and the upper portion of the screw 300 is opened and supported by a single shaft.

In this case, in order to facilitate the cutting of the material by the screw flight 320 formed at the upper end of the screw body 310 when the material having a radius larger than that of the screw body 310 is put in, it is preferable to form a space between the screw flight 320 formed at the upper end of the screw body 310 and the inner surface of the housing 200, as shown in fig. 25. Here, the partitioned space may be a space sufficient to allow at least a portion of the material to be seated between the screw flight 320 at the upper end of the screw body 310 and the inner side of the housing 200 and to be cut and pulverized when the material larger than the radius of the screw body 310 is put in, but a space much wider than the space between the screw flight 320 and the inner side of the housing 200 needs to be formed at the lower portion of the screw 300 where the juice extraction is performed.

As shown in fig. 25, the housing 200 may be formed at a position below the upper end of the screw 300, and the cross-sectional area formed by the inner side surface of the housing 200 may be widened toward the upper portion, that is, the housing 200 may be formed in a shape spread out toward the upper portion, thereby forming a partitioned space.

Further, as shown in fig. 27, the partitioned space may be formed only on the eccentric side of the housing 200 in a shape in which the housing 200 is spread as it goes upward.

Next, a juice extractor according to a fourth embodiment of the present invention will be described with reference to fig. 28.

In the present embodiment, the shape of the screw body 310 is not a symmetrical shape, but has a shape eccentric to one side as shown in fig. 28. More specifically, although the shape of the lower portion of the screw body 310 is similar to that of the conventional screw body 310, the screw body 310 is formed to have a smaller sectional area as it goes from the lower portion toward the upper end and to extend toward the eccentric side. That is, the upper end of the screw body 310 is formed not at the center of the bilateral symmetry but at the radially outer side. Therefore, as in the case of the conventional screw 300, the left side portion of the screw 300 shown in fig. 28 can carry out material conveyance and squeezing by the housing 200 and the screw flight 320 formed to protrude from the screw body 310, and the right side portion of the screw 300 can form an inclined surface and a crushing space that widens toward the upper portion.

Therefore, in the present embodiment, the material introduced from the inlet port 230 can enter the pulverizing space above the screw 300, and thus the material having a size larger than the radius of the screw 300 can be introduced and the pulverization of the material can be achieved in the pulverizing space. The crushed material is conveyed to the lower portion of the screw 300, and juice extraction is performed at the left side portion of the screw 300 and the lower portion of the screw 300.

At this time, a pulverizing blade 325 for cutting and pulverizing the material may be formed on the inclined surface of the screw body 310 forming the pulverizing space. The pulverizing blade 325 may be formed to extend together with the screw flight 320 formed on the screw body 310, or may be formed to extend toward the pulverizing space independently. Further, the crushing blade 325 may have various shapes such as a shape protruding in a horizontal direction on a straight line, a hook shape, a semicircular shape, and the like.

In this embodiment, the screw 300 of the embodiment described with reference to fig. 12 to 14 can be used. Further, it is apparent to those skilled in the art of the present invention that when the screw 300 is integrally formed without separately forming the screw 300 into the first block 360 and the second block 380 and discharging juice into the screw 300, the juicer is modified to arrange the juice extracting barrel 400 between the housing 200 and the screw 300.

The scope of the present invention is not limited to the above-described embodiments, but can be implemented by various forms of embodiments within the scope of the appended claims. Various modifications to the present invention will be apparent to those skilled in the art without departing from the spirit of the present invention as claimed in the appended claims.

Claims

1. A juicer, comprising:

a main body including a driving shaft protruding to an upper portion;

a housing having an upper portion opened to form a feed port for receiving a material, a juice discharge port for discharging juice extracted from the material and a residue discharge port for discharging residue, the housing being installed at an upper portion of the main body; and

a screw rod disposed at a lower end portion inside the housing and coupled to the drive shaft to rotate,

characterized in that, the screw rod includes:

a screw body rotating around a rotation axis; and

more than one screw thread which is formed on the outer circumference of the screw body in a protruding way and is used for crushing, squeezing and conveying the material which is put in through the feed port and is positioned between the screw thread and the feed port to generate juice;

one of the screw threads of the screw is formed to extend in a spiral shape upward of the screw body;

more than one crushing clamping table is formed on the inner side face of the shell, protrudes in the length direction of the shell and crushes the material through interaction with the screw threads formed by extending above the screw body.

2. The juice extractor of claim 1,

the housing includes:

a lower casing in which the screw is disposed, the screw being pressed to separate the material into juice and sludge, the juice discharge port and the sludge being formed at an outer side of the lower casing in a spaced manner; and

and an upper housing coupled to an upper portion of the lower housing and having a screw thread extending upward of the screw body therein, the upper housing forming a space in which a material is placed through an open feed port in the upper portion.

3. The juice extractor according to claim 1, further comprising a juice extracting barrel disposed between the housing and the screw to surround the screw, wherein a flow hole for flowing out juice generated by pressing and conveying the material by rotation of the screw to the outside and separating the juice from dregs is formed in the juice extracting barrel.

4. The juice extractor of claim 3,

the juice extracting barrel comprises:

an inner module including an inner plate portion having both ends open and a plurality of slits formed in the inner plate portion; and

an outer module including an outer plate portion that detachably accommodates the inner module therein, and a rib that protrudes from an inner surface of the outer plate portion so as to be inserted into the slit of the inner plate portion,

a slit is formed between the slit and the rib as an outflow hole for the juice to flow out to the outside when the outside module surrounds and is coupled to the inside module.

5. The juice extractor of claim 1,

the screw rod includes:

a first module comprising a plurality of slots; and

a second module detachably coupled to the first module and including a rib inserted into the slit,

when the first and second modules are combined, a gap is formed between the rib and the slit to allow the juice separated from the outside to flow into the inside of the screw.

6. The juice extractor of claim 2,

further comprising a juice extracting barrel disposed between the housing and the screw to surround the screw, the juice extracting barrel being formed with an outflow hole for flowing out juice generated by pressing and conveying the material by rotation of the screw to the outside and separating the juice from the lees,

a pressing step or a pressing protrusion for pressing and fixing the upper end of the juice extracting barrel is formed at the lower end of the upper housing.

7. The juice extractor of claim 1,

one of the screw threads of the screw is formed to extend in a spiral shape toward an upper end of the screw body, and the screw thread of the upper end of the screw body is formed to protrude in a horizontal direction in a radial direction of the screw body to crush the material.

8. The juice extractor of claim 7,

the inner side surface of the housing forms a partitioned space with a thread formed at the upper end of the screw body.

9. The juice extractor of claim 8,

the housing is formed such that a cross-sectional area formed by an inner side surface of the housing in a portion where an upper end portion of the screw rod is located becomes wider toward an upper portion.

10. The juice extractor of claim 9,

the partitioned space is formed at one eccentric side of the housing.

11. The juice extractor of claim 1,

the screw body has a reduced cross-sectional area toward the upper end from the lower portion and extends to an eccentric side to form a pulverization space for pulverizing a material put in from the upper portion.

12. The juice extractor of claim 11,

and a crushing blade which is formed by extending towards the crushing space and is used for crushing the material put into the crushing space is formed on the screw main body.