Juicer

Abstract

The present invention relates to a juicer. The juicer of the present invention is characterized in that it comprises: a juicer barrel, which contains a screw for squeezing juice material; and a hopper, which is connected to the upper part of the juicer barrel and has a space for containing the juice material, wherein the hopper comprises a cutting part which is rotatably connected to the lower end surface of the hopper and is used to cut the juice material, and an open space for the juice material to be put into is formed on the upper side of the cutting part in the hopper.

Description

Technical Field

[0001] The present invention relates to a juicer, and more particularly, to a juicer for squeezing and crushing vegetables or fruits to generate juice. Background Art

[0002] For health reasons, there are more and more cases of making green juice or juice directly at home to drink, and for this reason, many devices that can make juice simply using vegetables or fruits at home have been made public.

[0003] In the past, juicers put ingredients into the inlet, crushed them with high-speed rotating blades, and made juice by centrifugal separation. However, the high-speed crushing process of such juicers may destroy the inherent taste and nutrients of the ingredients. It is difficult to make green juice from vegetables composed of stems or leaves. It is not only difficult to make juice from fruits with high viscosity such as kiwis and strawberries, but it is impossible to make soy milk from soybeans.

[0004] In order to solve these problems, Korean Patent No. 10-0793852 discloses a method of squeezing and crushing materials between a mesh cylinder and a low-speed rotating screw. This method has the effect of making soy milk by using the principle of grinding and squeezing soybeans by a stone mill, and making juice by grating and squeezing high-viscosity fruits such as tomatoes, kiwis, strawberries, etc. on a grater, thereby solving the problems of the previous juicers.

[0005] However, there is also the following inconvenience: the size of the screw and the inlet port are made to be sized to accommodate materials of appropriate sizes, and the materials need to be cut into small pieces before being put into the inlet port. Summary of the invention

[0006] The present invention is proposed in view of the above-mentioned problems, and its purpose is to provide a juicer, which includes a hopper combined with the upper part of a juicer barrel and used for pre-cutting juice material. A cutting portion is supported only on the lower end surface of the hopper and rotates in conjunction with a screw, so that larger juice material such as a whole fruit can be pre-cut before being put into the juicer barrel, and an open space for putting in the juice material can be formed on the upper side of the cutting portion in the hopper, thereby making the size of the juice material put into the hopper larger.

[0007] The problems to be solved by the present invention are not limited to the above-mentioned problems, and those skilled in the art will clearly understand other problems not mentioned from the following description.

[0008] The above object can be achieved by the juicer of the present invention. The juicer of the present invention comprises: a juicer barrel, which contains a screw for squeezing juice material; and a hopper, which is coupled to the upper part of the juicer barrel and forms a space for accommodating the juice material, wherein the hopper comprises a cutting part which is rotatably coupled to the lower end surface of the hopper, receives the rotational force of the screw and rotates to cut the juice material, and an open space for the juice material to be put into is formed on the upper side of the cutting part in the hopper.

[0009] Here, the cutting part may include: a splitting blade extending upward in a spiral shape at a rotation center; and a cutting blade extending horizontally on a lower end surface of the hopper.

[0010] Here, the splitting blade may be formed in a spiral shape extending upward along the rotation direction of the cutting portion.

[0011] Here, an inclined surface for guiding the juice extraction material to move downward may be formed on the radial inner side surface of the chopping blade.

[0012] Here, the splitting edge and the cutting edge may be formed to extend in opposite directions to each other at the rotation center.

[0013] Here, the cutting blade may be in a shape bent in a direction opposite to a rotation direction of the cutting portion.

[0014] Here, the height of the splitting blade tip is preferably higher than the height of the cutting blade upper end surface.

[0015] Here, the splitting edge and the cutting edge may be formed in one piece.

[0016] Here, a first inner protrusion may be formed on the inner side surface of the hopper, the first inner protrusion being formed to protrude inwardly in a long vertical direction and being used to support the juice material when the chopping blade rotates.

[0017] Here, a second inner protrusion may be formed on the inner side surface of the hopper at the position of the tip of the cutting blade, the second inner protrusion being formed to protrude inward and used to separate the juice material on the upper portion of the cutting blade.

[0018] Here, a through groove penetrating through both sides may be formed at the lower end of the first inner protrusion so as to allow the upper end of the splitting blade to pass through.

[0019] Here, the hopper may further include: a hopper shell having an open upper portion and the cut-off portion installed on the lower end surface; and a cover portion hinged to the upper end of the hopper shell for opening and closing the upper portion.

[0020] Here, the cover body may include: a hinged portion, hinged at the upper end of the hopper shell; and a magnet mounting portion, extending downward from the hinged portion and having a first magnet mounted therein, and the juicer may include an opening and closing sensor portion, the opening and closing sensor portion may include: a second magnet, mounted at a position separated from the first magnet, and moving according to the distance from the first magnet when the cover body rotates around the hinged portion; and a switch, generating an on / off control signal according to the position of the second magnet.

[0021] Here, the hopper housing may further include a handle portion protrudingly formed on an outer side surface, and the cover body may further include a cover handle portion coupled to an upper portion of the handle portion.

[0022] Here, a hook coupling portion is formed on the cover handle portion and protrudes from the lower end surface, and a coupling hole is formed on the handle portion so as to penetrate the hook coupling portion and be inserted therein, and a fixing step may be formed on the outer side surface of the hook coupling portion, and the fixing step is hooked on the lower edge side surface of the coupling hole.

[0023] Here, anti-rotation ribs protruding downward and used for supporting the upper side edges of the cover handle portion may be formed on both side edges of the cover handle portion.

[0024] Here, a safety guide portion may be formed, which protrudes downward along the edge of the lower end surface of the cover body and is inserted into the inner side of the upper end portion of the hopper. The safety guide portion may be formed so that the farther away from the position hinged to the hopper shell, the greater the protrusion height.

[0025] Here, the hopper may further include: a sleeve portion, which is inserted into a connecting hole formed in the center of the lower end surface of the hopper; and a power transmission portion, which is inserted into a hole passing through the inside of the sleeve portion and is formed with an axial hole for inserting the upper rotating shaft of the screw, and the hopper can be threadedly connected to the cutting portion by the screw inserted through the axial hole.

[0026] Here, the inner side surface of the sleeve portion may be formed in a conical shape whose radius decreases toward the upper portion.

[0027] Here, the power transmission part may include: a coupling part, which is formed with the axial hole and the outer side surface is formed in a conical shape to correspond to the inner side surface of the sleeve part; and an upper protrusion, which is formed at the upper end of the coupling part to protrude above the top surface of the sleeve part and is formed with a screw hole for inserting the screw.

[0028] Here, the upper protrusion may be formed in an angular shaft shape, and an angular groove into which the upper protrusion is inserted may be formed on a lower end surface of the cut-off portion.

[0029] Here, the upper rotation axis of the screw may be formed as an n-gonal angular axis, and the shaft hole may be formed as a 2n-gonal shaft hole.

[0030] Here, the screw may be formed with one or more screw threads protruding in a spiral shape on the outer peripheral surface of the screw body, and the screw is a single-edged screw with one screw thread extending toward the upper end of the screw body to form a single-edged screw, and the single-edged edge may protrude radially outside the longest radius of the screw body.

[0031] Here, the screw can be divided into an upper cutting section and a juicing section, the cutting section is used to further cut the juicing material fed from the hopper, the juicing section is used to squeeze the juicing material below the cutting section to generate juice, and an anti-over-feeding rib protruding in a ring shape can be formed at the upper end of the juicing section.

[0032] Here, it may further include a juice separation cylinder arranged between the juice extraction cylinder and the screw, the juice separation cylinder being formed with an outflow hole for discharging juice generated from the juice extraction material to the outside to separate juice and residue, the upper end portion of the juice separation cylinder being formed with an expansion portion whose radius expands toward the upper portion, and the single blade may be located on the inner side of the expansion portion.

[0033] Here, a material inflow guide portion may be formed on one side of the expansion portion, and the material inflow guide portion is a curved surface portion gradually facing inward along the rotation direction of the screw.

[0034] Here, the juice separation cylinder may include: an inner module, including an inner plate portion open at both ends and a plurality of slits formed on the inner plate portion, and forming the expansion portion; and an outer module, including an outer plate portion for accommodating the inner module detachably therein and a rib protruding from the inner side surface of the outer plate portion in a manner that can be inserted into the slits of the inner plate portion, wherein, when the outer module surrounds and is combined with the inner module, an outflow hole, i.e., a gap, for allowing the juice to flow out to the outside may be formed between the slits and the ribs.

[0035] Here, it may further include a main body, which includes: a lower main body part, formed with a driving shaft protruding upward and used to support the lower end surface of the juicer barrel; and an upper main body part, protruding upward on one side of the lower main body part and used to support the side of the juicer barrel and the hopper, wherein an anti-rotation key protruding long in the length direction is formed on the upper main body part, and an anti-rotation key groove for inserting the anti-rotation key can be formed on the outer side surface of the hopper.

[0036] Here, the splitting blade may have a thick wall at the rotation center and may be formed to extend upward in a spiral shape.

[0037] Here, the cover portion may be formed with a hole for inserting the push rod, and the hole may be formed on an upper side of a rotation center of the cutting portion.

[0038] Moreover, the above object can be achieved by the juicer of the present invention. The juicer of the present invention comprises: a juicer barrel, which contains a screw for squeezing juice material; and a hopper, which is coupled to the upper part of the juicer barrel and forms a space for accommodating the juice material, the hopper comprises a cutting part rotatably coupled to the lower end surface of the hopper and used to cut the juice material, and an open space for the juice material to be put into is formed on the upper side of the cutting part in the hopper.

[0039] Here, the cutting portion may include: a splitting blade, which extends upward in a spiral shape at the center of rotation; and a cutting blade, which extends horizontally at the lower end surface of the hopper, and the splitting blade and the cutting blade extend in opposite directions at the center of rotation, and the tip of the splitting blade may be in a shape that is bent toward the cutting blade, or the tip of the cutting blade may be in a shape that is bent toward the splitting blade.

[0040] Here, a first inner protrusion is formed on the inner side surface of the hopper, the first inner protrusion is formed to protrude inwardly in a long vertical direction and is used to support the juice material when the cutting part rotates, and a through groove penetrating both sides of the protrusion is formed at the lower end of the first inner protrusion, allowing the cut juice material to pass through.

[0041] Here, the cutting portion may include: a splitting blade extending upward in a spiral shape at the rotation center; and a cutting blade extending horizontally on the lower end surface of the hopper, and the upper end of the splitting blade may be located below the first inner protrusion.

[0042] Here, at least one discharge hole for moving the juicing material crushed in the hopper to the interior of the juicing cylinder located below may be formed on the lower end surface of the hopper, and the discharge hole may be formed so that its width gradually increases along the rotation direction of the cutting portion.

[0043] Here, it can further include a juice separation cylinder arranged between the juice extraction cylinder and the screw, the juice separation cylinder is formed with an outflow hole for discharging juice generated from the juice extraction material to the outside to separate juice and residue, and the upper end of the juice separation cylinder is formed with an expansion portion with a larger radius toward the upper part, so that the single blade at the upper end of the screw is located on the inner side of the expansion portion.

[0044] Here, at least one material inflow guide portion may be formed on one side of the expansion portion, and the material inflow guide portion is a curved surface portion gradually facing inward along the rotation direction of the screw, and at least one of the material inflow guide portions may be located below the discharge hole.

[0045] As described above, according to the juice extractor of the present invention, the juice extracting material is cut and stirred in the hopper and then supplied to the juice extracting cylinder. Therefore, there is no need to cut the juice extracting material in advance, which has the advantage of improving user convenience.

[0046] Furthermore, since the cutting part is supported and rotated only on the lower end surface in the hopper, an open space can be ensured above the cutting part in the hopper, and thus there is an advantage that the size of the juice material put into the hopper can be larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a perspective view of a juice extractor according to an embodiment of the present invention.

[0048] Figure 2 yes Figure 1 Exploded three-dimensional diagram of the middle body and the juice extraction part.

[0049] Figure 3 yes Figure 1 sectional view of .

[0050] Figure 4 yes Figure 2 An exploded perspective view of the juice extraction section is shown.

[0051] Figure 5 and Figure 6 yes Figure 4 A perspective view of the hopper shown.

[0052] Figure 7 It is a perspective view showing the hopper in a state where the lid portion is opened.

[0053] Figure 8a and Figure 8b They are Figure 5 Exploded perspective view of the hopper shown.

[0054] Fig. 9 (a) and (b) are based on the position of the splitting edge and the cutting edge. Figure 5 A vertical cross-section of the hopper is shown.

[0055] Fig.10 It is a vertical cross-sectional view of the hopper showing a modified example of the positional relationship between the first inner protrusion and the splitting blade.

[0056] Fig.11 It is a horizontal cross-sectional view of the hopper showing the bottom surface of the hopper.

[0057] Fig.12 It is a graphic Figure 5 Bottom view of the underside of the hopper shown.

[0058] Fig.13 It is a perspective view of the cut portion shown in FIG. 8 .

[0059] Fig.14 and Fig.15 yes Fig.13 Side view of the cut-off portion shown.

[0060] Fig.16 It is a graphic Fig.13 A perspective view of the bottom surface of the cut-off portion is shown.

[0061] Fig.17 yes Figure 4 A perspective view of the screw shown.

[0062] Fig.18 yes Fig.17 Side view of.

[0063] Fig.19 It is a graphic Fig.17 A perspective view of the underside of the screw is shown.

[0064] Fig. 20 yes Figures 17 to 19 A variation of the screw shown.

[0065] Fig.21 and Fig. 22 yes Figure 4 An exploded perspective view of the juice separation cartridge is shown.

[0066] Fig.23 It is a partial cutaway combined stereogram of a juice separation cylinder.

[0067] Fig.24 yes Figure 4 A partially cutaway perspective view of the juice extraction cartridge is shown.

[0068] Fig.25 It is a graphic Fig.24 A perspective view of a juice extractor with its juice cover open.

[0069] Fig.26 It is a graphic Fig. 27 A perspective view of the back side of the juice cover is shown.

[0070] Fig. 27 It is a graphic Fig.24 A perspective view of the underside of the juicer cartridge is shown.

[0071] Fig.28 yes Fig. 27 A three-dimensional view of the lower end of the slag discharge port is shown.

[0072] Fig.29 yes Figure 2 An exploded perspective view of the subject shown.

[0073] Fig.30 yes Figure 3A three-dimensional view of the opening and closing sensor part shown.

[0074] Fig.31 yes Fig.29 Exploded perspective view of the moving motor shaft shown.

[0075] Fig.32 It is a partially cutaway perspective view of the moving motor shaft for explaining the operation of the moving motor shaft. DETAILED DESCRIPTION

[0076] The detailed description and drawings include specific matters of the embodiments.

[0077] The advantages and features of the present invention and the methods for achieving the advantages and features should be clearly understood by referring to the accompanying drawings and the embodiments described in detail below. However, the present invention is not limited to the following embodiments and can be implemented by various forms of embodiments. However, this embodiment is provided to fully disclose the present invention and fully inform the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims. Throughout the specification, the same reference numerals represent the same structural elements.

[0078] Hereinafter, the present invention will be described with reference to the accompanying drawings which illustrate a juice extractor according to an embodiment of the present invention.

[0079] Figure 1 is a three-dimensional diagram of a juice extractor according to an embodiment of the present invention, Figure 2 yes Figure 1 Exploded three-dimensional diagram of the middle body and the juice extraction part. Figure 3 yes Figure 1 A cross-sectional view of Figure 4 yes Figure 2 An exploded perspective view of the juice extraction section is shown.

[0080] The juice extractor according to an embodiment of the present invention can be divided into two major parts: a main body 100 and a juice extracting part 200 .

[0081] The main body 100 is mounted and fixed with the juice extracting part 200 , and receives external power from a power cord 102 connected to the lower end of the main body 100 to rotate the internal motor 1001 , thereby providing a driving force for rotating the screw 230 constituting the juice extracting part 200 .

[0082] like Figure 4 As shown, the juice extraction unit 200 may include a hopper 210 , a juice extraction cylinder 280 , a juice extraction and separation cylinder 260 , and a screw 230 .

[0083] The juice extracting unit 200 is assembled by installing a juice separation cylinder 260 and a screw 230 composed of an inner module 240 and an outer module 250 inside the juice extracting cylinder 280 and then combining the hopper 210 on the upper part of the juice extracting cylinder 280 .

[0084] In this way, the juice extracting part 200 can be mounted on the main body 100 in a state where the lower juice extracting cylinder 280 and the upper hopper 210 are combined, and is operated by receiving power from the driving shaft 130 protruding from the bottom surface of the main body 100. That is, the screw 230 inside the juice extracting cylinder 280 and the cutting part 225 inside the hopper 210 are rotated by receiving the rotational force of the driving shaft 130 to cut and squeeze the juice extracting material input to generate juice, and the generated juice and dregs are separated and discharged.

[0085] like Figure 2 As shown, the juice extracting unit 200 can only be operated when the hopper 210 is combined with the upper portion of the juice extracting cylinder 280. Figure 1 The hopper 210 is arranged on the main body 100 as shown. That is, in the present invention, when only the juicer barrel 280 is installed in the main body 100, the hopper 210 cannot be combined with the upper part of the juicer barrel 280. If the juicer is operated in the state where only the juicer barrel 280 is installed in the main body 100, the user may be accidentally injured. As described later, the present invention is arranged to supply power to the juicer when only the juicer 200 is installed in the main body 100 and the cover body of the hopper 210 is closed, thereby preventing the user from being injured due to the accidental operation of the juicer in advance. At the same time, it is also mechanically arranged that the juicer 200 can be installed as a whole on the main body 100 only when the juicer 200 is assembled, so as to further ensure the safety of the user. The structure related to this will be described later.

[0086] Next, the various structural elements constituting the juice extraction unit 200 and the structure of the main body 100 will be described in more detail with reference to the accompanying drawings.

[0087] Below, refer to Figures 5 to 16 A hopper 210 according to an embodiment of the present invention will be described.

[0088] Figure 5 and Figure 6 yes Figure 4 A perspective view of the hopper shown, Figure 7 This is a perspective view of the hopper with its lid open. Figure 8a and Figure 8b They are Figure 5 An exploded perspective view of the hopper shown, Fig. 9 (a) and (b) are based on the position of the splitting edge and the cutting edge. Figure 5 A vertical cross-sectional view of the hopper shown, Fig.10 is a vertical cross-sectional view of a hopper showing a modified example of the positional relationship between the first inner protrusion and the splitting blade, Fig.11 is a horizontal cross-sectional view of the hopper showing the bottom surface of the hopper. Fig.12 It is a graphic Figure 5 A bottom view of the bottom surface of the hopper shown, Fig.13is a three-dimensional view of the cut-off portion shown in FIG8, Fig.14 and Fig.15 yes Fig.13 A side view of the cut-off portion shown, Fig.16 It is a graphic Fig.13 A perspective view of the bottom surface of the cut-off portion is shown.

[0089] The hopper 210 is detachably coupled to the upper portion of the juice extraction cylinder 280. The hopper 210 is formed with a space for storing the juice extraction materials (e.g., fruits, vegetables, grains, etc.) that are put in. The cutting portion 225 rotatably fixed on the inner bottom surface of the hopper 210 receives power from the screw 230 and rotates, thereby cutting and stirring the juice extraction materials and supplying them to the lower juice extraction cylinder 280. Therefore, the present invention realizes the cutting of the juice extraction materials in the hopper 210, so there is no need to cut and put in the juice extraction materials in advance.

[0090] The hopper 210 can be divided into two major parts: a hopper shell 215 and a cover body 220 . A cut-off portion 225 can be installed inside the hopper 210 . Therefore, the hopper 210 including the cut-off portion 225 can also be referred to as the hopper 210 .

[0091] The hopper housing 215 has a cylindrical shape or a truncated cone shape, which forms a space for receiving the juicing material through an open upper portion.

[0092] As shown in FIG. 8 , the bottom plate surface of the hopper housing 215 may be formed to be separable from the upper cylindrical body, but the present invention is not limited thereto and the hopper housing 215 may be formed integrally therewith.

[0093] A cut-off portion 225 may be rotatably mounted on an upper portion of the bottom plate of the hopper housing 215 . The cut-off portion 225 may receive power from the screw 230 in the juice extraction cylinder 280 and rotate together with the screw 230 .

[0094] The inner side surface of the hopper housing 215 may be provided with comb-tooth-shaped protrusions 2151 that protrude inwardly along the longitudinal direction along the circumferential direction. This is to prevent light juicing materials such as leafy vegetables from absorbing water and adhering to the inner side surface of the hopper housing 215, and to enable easy peeling. In this case, the comb-tooth protrusions 2151 are preferably formed on the entire inner side surface of the hopper housing 215.

[0095] A handle 216 for a user to grasp the container may be formed on one side of the outer circumference of the hopper housing 215. As shown in the figure, the handle 216 may be formed in a ring shape extending from the upper end of one side of the cylindrical hopper housing 215 and extending toward the lower end of the hopper housing 215, wherein the lower end of the handle 216 is not necessarily arranged to be connected to the lower end of the hopper housing 215.

[0096] As shown in the figure, the handle portion 216 can be formed into a shape including a horizontal plane extending a specified distance from the upper end of the hopper shell 215 and a vertical plane extending vertically downward from the terminal end of the horizontal plane. A coupling hole 2161 for inserting and coupling the hook coupling portion 2221 of the cover body portion 220 can be formed on the horizontal plane at the upper end.

[0097] A through connection hole 2152 is formed in the center of the bottom plate surface of the hopper housing 215. The upper rotating shaft 233 of the screw 230 located below the hopper 210 is connected to the cutting portion 225 located above the bottom plate surface of the hopper 210 through the connection hole 2152 in a manner that can transmit power. The detailed structure related to this will be described later.

[0098] At least one through discharge hole 217 may be formed between the center and the edge of the bottom plate surface of the hopper housing 215. The juice material in the hopper 210 may be cut and stirred by the cutting portion 225 rotatably fixed on the bottom plate surface in the hopper 210, and supplied to the juicer 280 disposed below the hopper 210 through the discharge hole 217. In the figure, a discharge hole 217 is formed on one side of the bottom plate surface of the hopper 210, and the larger the number of discharge holes 217 or the size of the area of ​​the discharge holes 217, the more (or larger) the juice material can be supplied to the juicer 280. However, if too much juice material is supplied to the inside of the juicer 280, the screw 230 may generate a load, so it is preferred to set the size and number of the discharge holes 217 in a manner that an appropriate amount and size of juice material can be supplied.

[0099] like Fig.11 and Fig.12 As shown, the width of the discharge hole 217 may be formed to gradually widen along the rotation direction of the cutting portion 225. Therefore, the soft juice material or the juice material crushed into smaller size can immediately flow into the screw 230 through the narrow width portion of the discharge hole 217, which is the front end portion in the rotation direction, and the hard juice material or the juice material crushed into larger size can stay in the hopper 210 for a while, and then be further crushed through the cutting portion 225 and discharged through the wide width portion of the discharge hole 217, which is the rear end portion in the rotation direction.

[0100] Furthermore, an inclined surface 2171 inclined toward the discharge hole 217 may be formed on the inner side surface of the bottom plate surface of the hopper housing 215. In this case, the inclined surface 2171 is preferably formed to be inclined downward along the rotation direction of the cutting portion 225. Since the height of the portion where the inclined surface 2171 contacts the discharge hole 217 is lower than the height of the inner bottom plate surface of the hopper housing 215, the juice extraction object can be effectively guided to the discharge hole 217. Through the discharge hole 2171, the juice extraction material that may be fixed or stagnant between the inner side surface of the bottom plate surface of the hopper housing 215 and the cutting blade 227 of the cutting portion 225 can smoothly move downward.

[0101] Further, if Fig.12 As shown, the present invention may also form an inclined surface 2172 on the outer side surface of the bottom plate surface of the hopper housing 215 (the bottom surface of the hopper 210). The inclined surface 2172 is formed to be inclined downward from the discharge hole 217 along the rotation direction of the cut-off portion 225, so that the juice extraction material can be smoothly supplied to the juice extraction cylinder 280 through the discharge hole 217. The inclined surface 2171 formed on the inner side surface of the bottom plate surface of the hopper housing 215 and the inclined surface 2172 formed on the outer side surface of the bottom plate surface of the hopper housing 215 are respectively formed at the front end and the rear end of the discharge hole 217 along the rotation direction of the cut-off portion 225, and the inclination direction is downwardly inclined along the rotation direction of the cut-off portion 225.

[0102] A specified number of coupling protrusions 2174 that protrude long in the horizontal direction are arranged on the outer edge of the lower end of the hopper shell 215. The coupling protrusions 2174, together with the snap-in protrusions 2801 formed on the inner edge of the upper part of the juicer barrel 280, can detachably couple the juicer barrel 280 and the hopper 210.

[0103] The cover 220 is formed to be able to open and close the open upper part of the hopper housing 215. A through hole, i.e., a supplementary inlet 2201, may be formed in the center of the cover 220. During the juice extraction operation, when it is necessary to supplement the juice extraction material of a relatively small size, the juice extraction material may be supplied to the inside of the hopper 210 through the supplementary inlet 2201. Moreover, a push rod 290 may be inserted through the supplementary inlet 2201 to apply force so that the juice extraction material inside the hopper 210 moves to the lower part of the hopper 210. Although not shown in the figure, another plug for blocking the supplementary inlet 2201 may also be formed.

[0104] like Fig. 9 As shown, the supplementary inlet 2201 is located at the center of the cover body 220. At this time, the supplementary inlet 2201 is formed so that when the push rod 290 is inserted through the supplementary inlet 2201, the lower end of the push rod 290 is located above the central part of the cutting part 225 arranged on the inner lower end surface of the hopper 210, so the push rod 290 does not interfere with the cutting part 225. In particular, as described later, the cutting part 225 of the present invention can be formed by the chopping blade 226 extending upward in a spiral shape and the cutting blade 227 extending horizontally on the lower end surface of the hopper. Since the chopping blade 226 is formed to extend upward in a spiral shape, there is no interference even if the lower end of the push rod 290 is inserted into the inner side of the chopping blade 226, so the length of the push rod 290 can be set to a sufficiently long length extending to the top of the rotation center of the cutting part 225.

[0105] A hinge is formed on one side edge of the cover 220, more specifically, on the side opposite to the handle 216 of the hopper housing 215, and a pin hole 2203 is formed on the hinge, which is passed through in the horizontal direction and into which the pin 224 can be inserted. The cover 220 can be hinged to the upper part of the hopper housing 215 by providing the pin hole 2203 of the hinge between the pin fixing holes 2153 formed on both sides of the upper end of the hopper housing 215, and inserting the pin 224 into the pin fixing holes 2153 and the pin hole 2203. That is, in the present invention, the cover 220 will not be separated from the hopper housing 215, but is hinged to the hopper housing 215 to form a whole.

[0106] The magnet mounting portion 221 is formed to extend vertically downward at the hinge portion. A first magnet 2211 for sensing the open or closed state of the cover body is disposed inside the magnet mounting portion 221. As described later, a second magnet 1102 may be disposed on the inner side of the upper main body portion 110. When the cover body 220 is opened or closed, the magnet mounting portion 221 rotates and its position changes. As a result, the distance between the first magnet 2211 and the second magnet 1102 changes, and the magnetic force changes. Based on the movement of the second magnet 1102 caused by the change in magnetic force, whether the cover body 220 is opened or closed can be sensed. The details related to this will be referred to later. Figure 29 to Figure 30 Provide explanation.

[0107] When the cover 220 is opened, the magnet arrangement portion 221 extending vertically downward in the hinge portion rotates toward the hopper housing 215, and thus may interfere with the outer side of the hopper housing 215. Therefore, as shown in the figure, an anti-interference groove 2154 recessed toward the inner side of the hopper housing 215 may be formed on the outer side of the hopper housing 215 where the magnet arrangement portion 221 is provided, so as to form a space for the magnet arrangement portion 221 to move toward the center of the hopper 210.

[0108] The cover handle 222 is formed to protrude from the outside of the cover body 220 covering the open upper surface of the cylindrical hopper shell 215 on the opposite side of the hinge, and the cover handle 222 is located on the upper part of the handle 216. The cover handle 222 can be combined with the handle 216 at the upper part of the handle 216. The cover handle 222 is a horizontal surface with a predetermined width, which is formed to protrude from the cover body 220 covering the open upper surface of the hopper shell 215, and a hook coupling portion 2221 is formed to protrude downward on the bottom surface of the cover handle 222. At this time, the hook coupling portion 2221 is formed to protrude vertically downward in a manner having a plate surface in the width direction of the cover handle 222 so that it can be pressed toward the user side by the user's finger.

[0109] As described above, a coupling hole 2161 is formed on the upper horizontal surface of the handle portion 216 , and the coupling hole 2161 passes through the upper horizontal surface in a long width direction in a shape corresponding to the cross-section of the hook coupling portion 2221 , so that the hook coupling portion 2221 can be inserted therethrough.

[0110] Furthermore, in order to allow the hook coupling portion 2221 to be hooked to the lower edge side of the coupling hole 2161 so that the cover portion 220 can be fixed without being opened, a fixing step 2222 may be formed on the outer side of the hook coupling portion 2221 .

[0111] Therefore, when the hook coupling portion 2221 of the cover body 220 is inserted into the coupling hole 2161, so that the fixed step 2222 of the hook coupling portion 2221 is hooked on the lower edge side of the coupling hole 2161, the cover body 220 can be prevented from being opened artificially while covering the upper open surface of the hopper shell 215.

[0112] On the contrary, when the user grasps the handle portion 216, the user can release the fixed step 2222 hooked on the side edge of the coupling hole 2161 by pulling the hook coupling portion 2221 toward the user's side with the index finger or other fingers, and in this state, apply force to lift the handle portion 222 upward with the thumb or other fingers to open the cover body 220.

[0113] Furthermore, anti-rotation ribs 2224 may be formed on both side edges of the bottom surface of the cover handle 222, and protrude downward in a long direction in the protruding direction of the cover handle 222. When the cover body 220 is closed, the anti-rotation ribs 2224 are supported by both side edges of the upper end of the handle 216 to prevent the cover body 220, which is connected to the upper part of the hopper shell 215 through the hinge, from rotating in the horizontal direction.

[0114] like Figure 7 As shown, a safety guide 223 may be formed, which is formed to protrude vertically downward along the bottom edge of the cover 220 and is inserted into the inner side of the upper end of the hopper 210. When the cover 220 is opened at a certain angle, the safety guide 223 prevents the user's hand from entering the interior of the hopper housing 215. As described above, the juicer of the present invention does not operate when the cover 220 is opened by the operation of the first magnet 2211 and the second magnet 1102. When the cover 220 is partially opened, the opening and closing sensor 115 for sensing the opening and closing state of the cover 220 fails to sense the opening state due to a sensing error, and the safety guide 223 prevents an unexpected safety accident from occurring. Moreover, the safety guide 223 together with the anti-rotation rib 2224 can also perform the function of preventing the cover 220 from rotating in the horizontal direction.

[0115] Although the safety guide portion 223 can protrude along the lower end surface edge of the cover body 220 to a specified height, as shown in the figure, the safety guide portion 223 can be formed into a shape with an inclined lower end surface and its protruding height gradually decreasing from the side away from the hinge part to the hinge part side.

[0116] The cutting portion 225 can be rotatably coupled to the inner bottom surface of the hopper 210, receives the rotational force from the screw 230 located inside the juicer barrel 280 and rotates inside the hopper 210, so as to cut and stir the juice material put into the hopper 210, and supply the cut juice material to the inside of the juicer barrel 280 located below the hopper 210 through the discharge hole 217 formed on the lower end surface of the hopper 210.

[0117] In the present invention, the cutting part 225 does not cut the juice material while rotating in a state where both sides are supported between the lower end and the upper end of the hopper 210 inside the hopper 210, but cuts the juice material in a state where one end is supported at the lower end of the hopper 210, so that an open space is formed on the upper side of the cutting part 225 in the hopper 210 without interference. Thus, an open space is formed in which the entire upper side of the cutting part 225 is open, so that juice material of a large size such as a whole fruit can be put into the hopper 210 for cutting.

[0118] Next, referring to FIG. 8 and Fig. 9 The structure in which the cutting part 225 is rotatably coupled to the bottom plate surface of the hopper housing 215 and the cutting part 225 is rotated by receiving the rotational force from the screw 230 will be described.

[0119] A sleeve portion 218 is provided in the connection hole 2152 formed on the bottom plate surface of the hopper shell 215. The radial inner side and outer side of the sleeve portion 218 are formed into a conical shape with a smaller radius toward the upper part, and a step 2181 is formed protruding in a circular flange shape at the lower end. Corresponding to the shape of the outer side of the sleeve portion 218, a conical inclined surface and a clamping edge 2158 are formed on the inner side of the connection hole 2152. At this time, the sleeve portion 218 can also be formed as a whole on the bottom surface of the hopper shell 215 by insert molding.

[0120] The connecting hole 2152 and the sleeve portion 218 are connected in a conical shape with a radius that decreases toward the top. Therefore, during the juicing process, even if the screw 230 is subjected to an upward force due to the increase in load, the bonding force between the hopper bottom surface and the sleeve portion 218 can be firmly maintained, thereby preventing deformation caused by the floating of the screw 230.

[0121] A hole with an upper and lower open shape is formed inside the sleeve part 218 for inserting the power transmission part 219. When the screw 230 rotates in a state where the upper rotating shaft 233 of the screw 230 is inserted into the power transmission part 219, the power transmission part 219 inserted into the inner side of the sleeve part 218 rotates inside the sleeve part 218, so the sleeve part 218 is preferably formed of a material that is not easily deformed due to friction generated when the power transmission part 219 rotates.

[0122] The power transmission part 219 may be composed of a coupling part 2191 and an upper protrusion 2195. In order to correspond to the shape of the inner side surface of the sleeve part 218 formed into a conical shape with a smaller radius as it approaches the upper part, the outer side surface of the coupling part 2191 is also formed into a conical shape with a smaller radius as it approaches the upper part. An axial hole 2192 for inserting the upper rotating shaft 233 of the screw 230 is formed inside the coupling part 2191. The upper rotating shaft 233 of the screw 230 is formed as an angular shaft, and the axial hole 2192 may be formed as an angular shaft hole. In the present embodiment, the upper rotating shaft 233 of the screw 230 is formed as a hexagonal angular shaft, and the axial hole 2192 may be formed as a 12-sided axial hole 2192 which is twice the number. The shaft hole 2192 formed on the power transmission part 219 can also be formed as a hexagonal shaft hole in order to correspond to the shape of the upper rotating shaft 233 of the screw 230, but when the shaft hole 2192 is formed as a dodecagonal shaft hole which is twice the number, the connection between the upper rotating shaft 233 of the screw 230 and the power transmission part 219 may become easier. Furthermore, an inclined surface that expands the size of the shaft hole is formed at the entrance of the dodecagonal shaft hole 2192, which can make the connection easier. Therefore, in order to make the connection between the two components easier, when the upper rotating shaft 233 of the screw 230 is formed as an n-gonal angular shaft, the shaft hole formed on the connecting part 2191 of the power transmission part 219 can be formed as a 2n-gonal shaft hole.

[0123] At this time, when the power transmission part 219 is coupled to the sleeve part 218 , the bottom surface of the power transmission part 219 is located above the bottom surface of the bottom plate surface of the hopper 210 .

[0124] An upper protrusion 2195 is formed on the upper part of the coupling part 2191. When the power transmission part 219 is inserted into the sleeve part 218 on the bottom surface of the hopper shell 215, the upper protrusion 2195 passes through the hole of the sleeve part 218, protrudes to the upper part of the top surface of the sleeve part 218 and is located inside the hopper 210. At this time, the upper protrusion 2195 can be formed into a quadrilateral angular shape, and an angular groove 2251 is formed on the bottom surface of the cutting part 225 in a shape corresponding thereto, so that the cutting part 225 is coupled to the upper protrusion 2195. The shape of the upper protrusion 2195 and the shape of the corresponding groove 2251 on the bottom surface of the cutting part 225 are not limited thereto, and can be deformed into various shapes such as a cross shape and a spline shape.

[0125] When the upper protrusion 2195 is combined with the groove 2251 on the bottom surface of the cutting portion 225, the screw 2199 can be inserted through the axial hole 2192 of the combining portion 2191 and threadedly combined with the screw hole 2196 passing through the upper protrusion 2195 and the screw groove 2252 formed on the rotation center of the bottom surface of the cutting portion 225, so as to firmly fix the cutting portion 225 to the upper protrusion 2195.

[0126] In order to limit the insertion depth of the upper rotating shaft 233 of the screw rod 230, a step is formed at the upper end of the shaft hole 2192 formed on the inner side surface of the coupling portion 2191, and the head of the screw 2199 is located above the step based on the step.

[0127] As described above, the inner side surface of the sleeve portion 218 and the outer side surface of the power transmission portion 219 are connected in a conical shape with a smaller radius toward the upper part, so that when the screw 230 is subjected to an upward buoyancy force, the screw 230 is prevented from floating up. Furthermore, the more the power transmission portion 219 is subjected to an upward force, the more the power transmission portion 219 and the sleeve portion 218 are in a concentric position, so that the mechanical stability can be improved.

[0128] The cutting part 225 is rotatably coupled to the bottom surface of the hopper 210 , and receives a rotational force from the screw 230 via the power transmission part 219 , and cuts and stirs the juice material while rotating.

[0129] The cutting portion 225 may include a splitting blade 226 and a cutting blade 227. The splitting blade 226 and the cutting blade 227 may rotate at the same speed. In this case, the splitting blade 226 and the cutting blade 227 may be formed as one body, so that the splitting blade 226 and the cutting blade 227 rotate together at the same speed.

[0130] The chopping blade 226 is formed to extend upward in a spiral shape along the rotation direction of the cutting portion 225 at the rotation center. The upper end of the chopping blade 226 is preferably formed in a pointed hook shape with a smaller cross section toward the end. Moreover, the chopping blade 226 is not formed in a plate shape, but is formed in a shape with a predetermined thickness, and the cross section becomes smaller toward the upper part, and is bent in a spiral shape and extends upward, so as to be formed in a shape like a bull's horn.

[0131] The hook-shaped chopping blade 226 facing upward mainly performs the function of chopping and crushing the juice material thrown in from the upper part. Moreover, since the chopping blade 226 is not formed in a plate shape but in a shape with a predetermined thickness, it is possible to prevent stem vegetables such as water celery from being entangled with the chopping blade 226. Moreover, the shape extending in a spiral shape into a horn shape performs the function of guiding the cut juice material to move downward. At this time, the radial inner side surface of the chopping blade 226 is formed with an inclined curved surface 2261 in a manner that the closer to the lower part, the more radially outward, so that the juice material crushed by the chopping blade 226 during the rotation of the chopping blade 226 can move smoothly downward along the curved surface.

[0132] The higher the height of the upper end of the chopping blade 226, the better the crushing effect. The height of the upper end of the chopping blade 226 is preferably set to be at least higher than the height of the upper end surface of the cutting blade 227. In addition, the radial length of the chopping blade 226 is preferably as long as possible in the radial direction within the range that does not interfere with the inner side surface of the hopper 210.

[0133] The cutting blade 227 is formed to extend horizontally on the lower end surface of the hopper 210. The cutting blade 227 is preferably formed to have a predetermined thickness in the vertical direction. As shown in the figure, the cutting blade 227 is formed at the upper end where the inclined surfaces in front and behind the rotation direction meet. Fig.14 As shown, the end of the cutting blade 227 may be formed so that its height gradually decreases as it approaches the radial inner side. The cutting blade 227 is used to perform the function of secondary crushing the juice material that is crushed by the splitting blade 226 and moves downward by the blade formed at the upper end. At the same time, since the cutting blade 227 has a predetermined thickness, the cutting blade 227 can push the juice material located on the bottom plate surface of the hopper 210 so that it can be smoothly discharged through the discharge hole 217. This is because if the thickness of the cutting blade 227 is thin, it may fail to push the juice material located on the bottom plate surface of the hopper 210 and may run idle.

[0134] The cutting blade 227 is preferably formed at the rotation center of the cutting portion 225, and is extended in a direction 180 degrees opposite to the direction in which the splitting blade 226 extends, but is not necessarily limited to this. At this time, the cutting blade 227 is preferably formed in a shape that is curved in the direction opposite to the rotation direction of the cutting portion 225.

[0135] Therefore, in the present invention, the splitting blade 226 and the cutting blade 227 exist in opposite directions at the rotation center, and the blade tips of the splitting blade 226 and the cutting blade 227 are bent toward each other, so that the overall shape of the cutting portion 225 is similar to a crescent shape.

[0136] Moreover, the chopping blade 226 and the cutting blade 227 are not located on the same plane, and the chopping blade 226 is bent into a spiral shape and has a shape extending upward, so the overall shape of the cutting portion 225 is similar to a crescent shape, and has shapes that are twisted with each other in space.

[0137] Similar to the splitting blade 226 , the cutting blade 227 is also preferably formed to be as long as possible in the radial direction within a range that does not interfere with the inner surface of the hopper 210 .

[0138] A bottom groove 2271 recessed to a predetermined depth may be formed on the bottom surface of the cutting blade 227. This can reduce the weight of the cutting portion 225.

[0139] As described above, an angular groove 2251 may be formed at the rotation center of the bottom surface of the cutting portion 225 corresponding to the shape of the upper protrusion 2195 of the power transmission portion 219 formed in a quadrilateral angle, and a screw groove 2252 for coupling a screw is formed on the angular groove 2251. In a state where the upper protrusion 2195 of the power transmission portion 219 is inserted into the angular groove 2251, the cutting portion 225 is coupled with the screw 2199, so that the cutting portion 225 can be rotatably mounted on the inner bottom plate surface of the hopper housing 215.

[0140] like Fig. 9 As shown, at least one first inner protrusion 2155 may be formed on the inner side surface of the hopper 210 and protrude inwardly in a long vertical direction. The first inner protrusion 2155 interacts with the chopping blade 226 to hold the juice material put into the hopper 210, thereby improving the crushing efficiency by the chopping blade 226. Without the first inner protrusion 2155, the juice material may rotate together with the chopping blade 226 and not be cut. However, if the chopping blade 226 is rotated in a state where the juice material is supported in the rotation direction by the first inner protrusion 2155, the juice material can be easily crushed. Therefore, in order to support the juice material in the radial direction, the first inner protrusion 2155 is preferably formed to have a relatively larger height protruding inward than the second inner protrusion 2157 described later.

[0141] Through the above-mentioned anti-interference groove 2154, one side of the outer circumferential surface of the hopper 210 is bent inward. As shown in the figure, one side of the outer circumferential surface of the hopper 210 can form a first inner protrusion 2155 together with the anti-interference groove 2154.

[0142] At this time, the lower end of the first inner protrusion 2155 can be formed to be located at the upper end of the chopping blade 226, such as Fig. 9 As shown in (a), a through groove 2156 penetrating both sides may be formed at the lower end of the first inner protrusion 2155. At this time, the upper end of the splitting blade 226 can pass through the through groove 2156. The through groove 2156 is formed at the lower end of the first inner protrusion 2155 corresponding to the shape of the upper end of the splitting blade 226, so that the lower end of the first inner protrusion 2155 and the upper end of the splitting blade 226 can overlap with each other. At the same time, the radial length of the splitting blade 226 can be made longer, so the cutting efficiency can be improved.

[0143] Fig.10 The figure shows a modified example of the positional relationship between the first inner protrusion 2155 and the chopping blade 226. In this embodiment, the lower end of the first inner protrusion 2155 and the chopping blade 226 do not overlap each other but are separated from each other. That is, the upper end of the chopping blade 226 is located below the lower end of the first inner protrusion 2155.

[0144] However, in this embodiment, a through groove 2155 may be formed that passes through both sides of the lower end of the first inner protrusion 2155 and bends upward. In this case, the through groove 2155 is used to provide a space for the material crushed by the first inner protrusion 2155 and the chopping blade 226 to be discharged smoothly in the circumferential direction. If hard vegetables or fruits such as carrots are caught in the first inner protrusion 2155, a large load will be generated. However, the space ensured by the through groove 2155 can smoothly discharge the material crushed by the first inner protrusion 2155 and the chopping blade 226.

[0145] Furthermore, at least one second inner protrusion 2157 may be formed on the inner side surface of the hopper 210, and the second inner protrusion 2157 may be formed to protrude radially inwardly above the position where the end portion of the chopping blade 227 is located. The second inner protrusion 2157 may interact with the cutting blade 227. As the chopping blade 227 rotates, a part of the juice material on the bottom plate surface of the hopper 210 is pushed and flows into the discharge hole 217, and a part of the juice material gradually moves radially outward due to centrifugal force. At this time, the juice material located above the cutting blade 227 may not flow into the discharge hole 217 but may idly rotate together at the upper part of the cutting blade 227. At this time, the juice material pushed to the outside of the upper part of the cutting blade 227 due to the centrifugal force may collide with the second inner protrusion 2157 and fall from the cutting blade 227.

[0146] In this embodiment, the second inner protrusion 2157 is formed below the first inner protrusion 2155. Moreover, a discharge hole 217 is formed vertically below the first inner protrusion 2155 and the second inner protrusion 2157, so that the juice material cut and separated by the first inner protrusion 2155 and the second inner protrusion 2157 falls vertically downward and can be directly supplied to the inside of the juice extraction cylinder 280 through the discharge hole 217.

[0147] Next, the screw 230, the juice separation cylinder 260 and the juice cylinder 280 constituting the juice extraction unit 200 and located below the hopper 210 will be described. Figures 17 to 20 The screw 230 will be described.

[0148] Fig.17 yes Figure 4 A perspective view of the screw shown, Fig.18 yes Fig.17 Side view of Fig.19It is a graphic Fig.17 A perspective view of the bottom surface of the screw shown, Fig. 20 yes Figures 17 to 19 A variation of the screw shown.

[0149] The screw 230 is installed inside the juice separation cylinder 260 to receive the rotational force from the driving shaft 130 of the body 100 to perform a rotational movement, and squeeze and crush the juice extraction material together with the juice separation cylinder 260 .

[0150] The screw 230 may include a screw body 231 and a screw thread 232 spirally protruded from an outer side of the screw body 231 .

[0151] As shown in the figure, the screw body 231 can be divided into an upper part and a lower part around the part with the largest radius of the screw body 231. At this time, the upper part forms a cutting section for further cutting the juice material fed from the hopper 210, and the lower part forms a juicing section for formally squeezing the juicing material below the cutting section to generate juice.

[0152] The lower part of the screw body 231 is formed with a radius that gradually decreases as it goes downwards, and by setting it to have a radius that decreases as it goes downwards, a space for the squeezed juice separated by squeezing can be formed. However, the shape of the lower part of the screw body 231 is not limited thereto, and for example, it can be formed as a straight line downwards without a radius change.

[0153] Moreover, the upper part of the screw body 231 is formed so that the radius gradually decreases as it goes up. As shown in the figure, the radius change range of the upper part according to the height change is larger than that of the lower part of the screw body 231. The radius of the screw body 231 is the smallest at the front end, and is formed so that the radius gradually increases as it goes down. According to such a shape, a space is formed for larger materials to be transferred by being squeezed and crushed so that the size gradually decreases. In other words, the diameter of the upper part of the screw body 231 gradually increases as it goes down, so the size of the space for material transfer formed by the screw body 231 and the screw thread 232 gradually decreases along the material transfer direction. That is, through the rotation of the screw 230, the material is squeezed and crushed so that its size gradually decreases, and moves to the bottom of the screw 230 along the screw thread 232 formed downward and along the gradually decreasing transfer space.

[0154] The screw thread 232 is formed to protrude in a spiral shape on the outer peripheral surface of the screw body 231, and the object of juice extraction is moved downward while being squeezed in the narrow gap between the screw 230 and the juice separation cylinder 260 by the screw thread 232. At this time, the screw thread 232 preferably protrudes in a manner of contacting or approaching the juice separation cylinder 260. As described above, the radius of the upper part of the screw body 231 decreases as it approaches the upper part, so that the protruding height of the screw thread 232 increases as it approaches the upper part of the screw body 231.

[0155] In the present invention, one or more screw threads 232 may be formed, and in the present invention, a single-edged screw 230 may be used, in which one screw thread (first screw thread 232-1) among the plurality of screw threads 232 is extended to the upper end of the screw body 231 and a single-edged screw 2321 is formed at the upper end of the screw body 231. If a double-edged screw is used in which two screw threads are symmetrically extended to the upper end of the screw body 231, a large load will be generated, so the single-edged screw 230 is used in the present invention, but it is not limited thereto.

[0156] At this time, the radius of the single blade 2321 at the upper end of the threaded body 231 in the present invention can be larger than the maximum radius of the threaded body 231, so that the single blade 2321 is formed to protrude further outward. In this way, while the size of the screw body 231 is maintained the same as before, the radius of the single blade 2321 is set to be larger than the maximum radius of the screw body 231, so that a wider space can be ensured for the juice material to be dropped from the top. This allows the juice material subdivided in the upper hopper 210 to be dropped into the screw 230 more smoothly.

[0157] As shown in the figure, a second screw thread 232-2 may be formed in a spiral shape from the upper part of the screw body 231 in the juicing section, and a plurality of other third screw threads 232-3 may be formed between the first screw thread 232-1 and the second screw thread 232-2 in the lower part of the screw body 231. Therefore, the width between adjacent screw threads 232 formed on the screw body 231 is set to have a relatively wide interval at the upper part of the screw body 231, and a relatively narrow interval at the lower part of the screw body 231 through a plurality of screw threads 232. That is, the cutting section as the upper part of the screw 230 can mainly perform the function of crushing a larger juicing object, and the juicing section as the lower part of the screw 230 can be crushed and squeezed by the rotation of the screw 230, thereby mainly performing the juicing function.

[0158] Furthermore, a plurality of dregs guide ridges 235 protruding outwardly from the lower end radius of the screw body 231 may be formed in the circumferential direction. The dregs guide ridges 235 are used to sweep downwardly the dregs separated by juice extraction and transferred to the bottom of the juice separation cylinder 260 when the screw 230 rotates. In this way, the dregs guide ridges 235 formed on the outer circumferential surface of the lower end radius of the screw 230 can smoothly remove the dregs stuck under the juice separation cylinder 260, thereby further improving the juice extraction efficiency.

[0159] The upper rotating shaft 233 of the screw 230 protruding upward from the upper end of the screw body 231 is formed as an angular shaft and is coupled to the angular shaft hole 2192 of the power transmission part 219 to transmit power to the cutting part 225 .

[0160] Moreover, the lower rotating shaft 234 of the screw 230 protruding downward from the hollow interior of the screw body 231 is formed as an angular shaft hole, into which the angular drive shaft 130 protruding from the upper part of the body 100 is inserted, and receives power from the motor 1001. As described in the coupling structure between the upper rotating shaft 233 of the screw 230 and the power transmission part 219, the drive shaft 130 may be formed as an n-gonal angular shaft, and the lower rotating shaft 234 of the screw 230 may be formed as a 2n-gonal angular shaft hole, so that the two components can be easily coupled. For example, when the drive shaft 130 is formed as a hexagonal angular shaft, the lower rotating shaft 234 of the screw 230 may be formed as a 12-gonal angular shaft hole.

[0161] A gripping portion 236 may be formed at the upper end of the screw body 231. The gripping portion 236 may be formed protrudingly at the upper end of the screw body 231 at a predetermined horizontal angle to the single blade 2321, so that the user can grasp the screw 230 installed in the juice extractor 280 together with the single blade 2321 for washing or other reasons and easily remove the screw 230.

[0162] Fig. 20 The figure shows a modified example of the above-mentioned screw 230. In this embodiment, between the cutting section and the juicing section, an anti-over-injection rib 239 is formed at the junction of the upper and lower parts of the screw 230 in a circular ring shape or a belt shape and protrudes from the screw body 231 along the circumferential direction with a specified thickness.

[0163] The over-injection prevention rib 239 is used to prevent the juicing section from being overloaded due to the pressure of the screw 230 when a large amount of juicing material in the cutting section is supplied to the juicing section at once. Due to the over-injection prevention rib 239, the interval between the screw 230 and the juice separation cylinder 260 becomes smaller, so a large amount of juicing material can be prevented from being supplied to the space between the screw 230 and the juice separation cylinder 260 at once.

[0164] Except for the anti-over-injection rib 239, the remaining structure of the screw rod 230 is the same as the above content, so the description of the same structure is omitted.

[0165] Below, refer to Figure 21 to Figure 23 The juice separation cartridge 260 according to the embodiment of the present invention will be described in more detail.

[0166] Fig.21 and Fig. 22 yes Figure 4 An exploded perspective view of the juice separation cartridge shown, Fig.23 It is a partial cutaway combined stereogram of a juice separation cylinder.

[0167] As shown in the figure, the juice separation cylinder 260 of the present invention can be formed by combining an inner module 240 and an outer module 250. Here, the inner module 240 and the outer module 250 can be formed of materials such as polyetherimide (PEI).

[0168] The inner module 240 is substantially cylindrical in shape, and its upper and lower sides are open. Here, the inner module 240 includes a plurality of inner plate portions 241, and a plurality of slits 242 are formed long along the upper and lower length directions through the plurality of inner plate portions 241.

[0169] Here, the plate portion 241 is named for the convenience of explaining the present invention. When the cylindrical module is divided into a hole portion forming the slit 242 and a plate portion without the slit 242, the plate portion without the slit 242 is defined as the "plate portion 241".

[0170] At this time, the width of the slit 242 on the upper side may be smaller than the width of the slit 242 on the lower side. That is, the width of the slit 242 may be narrower toward the upper side.

[0171] Furthermore, a plurality of first ribs 244 protruding long in the vertical direction may be formed on the inner circumferential surface of the inner module 240 along the circumferential direction. The first ribs 244 squeeze or crush the material by interacting with the screw thread 232 as the screw 230 rotates. Without the first ribs 244, the juicing object may not move downward and may stagnate, or the squeezing force or crushing force may be small or may not occur. In this case, the first ribs 244 may be formed on one side of the slit 242 of the inner module.

[0172] Furthermore, a predetermined number of second ribs 243 protruding long in the vertical length direction may be formed on the inner side surface of the inner module 240 in the circumferential direction. The second ribs 243 are used to transfer the juicing material put into the juice separation cylinder 260 to the lower part and crush the juicing object. The second ribs 243 may enhance the rigidity of the inner module 240 and guide the juicing object to the inside of the juice separation cylinder 260. Furthermore, the second ribs 243 may adjust the position of the screw 230 and adjust the juicing space.

[0173] The second rib 243 may be formed so that its protruding height is the same from the upper part to the lower part of the inner module 240, but it is preferably formed in a shape that gradually becomes lower from the upper part of the inner module 240 to the lower part. Moreover, the second rib 243 may be formed to be inclined downward from the upper part of the inner module 240 to the lower part, and a step portion 2431 may be formed in the middle part thereof to protrude toward the screw 230 to form a step. According to the shape of the screw 230 and the design conditions of the screw thread 232, the position, number or protruding height of the step portion 2431 may be variously deformed. Considering the design conditions and the juice extraction efficiency, the number and arrangement form of the second rib 243 may be variously changed as needed. In the embodiment of the present invention, the second rib 243 is vertically formed along the upper and lower directions of the inner module 240 as an example, but the scope of the rights of the present invention is not limited thereto.

[0174] At this time, the first rib 244 is formed on the lower inner side surface of the inner plate portion 241 (more specifically, on the side of the slit 242 ), and the second rib 243 is formed entirely on the inner side surface of the inner plate portion 241 from the upper part to the lower part.

[0175] As shown in the figure, an expansion portion with a larger radius is formed at the upper end of the inner module 240. The upper end of the inner module 240 expands in a trumpet shape, so that the single blade 2321 at the upper end of the screw 230 can rotate without interference inside the expansion portion 245.

[0176] Furthermore, a material inflow guide 246 may be formed on one side of the expansion portion 245, and the material inflow guide 246 is a curved surface portion that gradually faces inward along the rotation direction of the screw 230. If there is no material inflow guide 246, the juicing material may not flow downward and may idle on the expansion portion 245 together with the single blade 2321. However, when the juicing material rotates together with the single blade 2232, the juicing material can be guided in a manner such that it is separated from the single blade 2321 and moves downward by contact with the material inflow guide 246. Furthermore, by forming the material inflow guide 246 into a soft curved surface, the problem of the material being caught in the material inflow guide 246 can be solved. The top surface of the material inflow guide 246 is formed so as not to be interfered with by the bottom surface of the single blade 2321.

[0177] At this time, the material inflow guide portion 246 may be formed integrally with the second rib 243 at the upper end portion of the second rib 243. Also, the material inflow guide portion 246 may be formed in a plurality of portions spaced apart in the circumferential direction. Fig.11As shown, it is preferred that at least one of the material inflow guides 246 is located below the discharge hole 217 of the hopper 210. The material inflow guide 246 located below the discharge hole 217 allows hard juicing materials or relatively large juicing materials to stagnate inside the hopper 210 and be fully cut by the cutting portion 225.

[0178] A predetermined number of plug-in protrusions 247 are formed on the lower end surface of the inner module 240 . When the inner module 240 and the outer module 250 are combined, the plug-in protrusions 247 are inserted into the plug-in grooves 258 formed on the bottom surface of the outer module 250 , thereby combining the two components 240 and 250 .

[0179] Next, the outer module 250 will be described. The outer module 250 is substantially cylindrical in shape, and includes an outer plate portion 251 opened at the upper and lower sides, and ribs protruding from the inner side surface of the outer plate portion 251 .

[0180] The outer plate portion 251 accommodates the inner module 240, and the outer module 250 and the inner module 240 are detachably connected. That is, when the outer module 250 is connected to the inner module 240, it can be connected to the inner module 240 in a manner of accommodating and surrounding the inner module 240. At this time, the outer module 250 can cover and support the inner module 240.

[0181] When the outer module 250 and the inner module 240 move up and down and are combined, the rib 252 is inserted under the slit 242 of the inner module 240 and is combined with the slit 242. At this time, a fine gap is formed between the slit 242 and the rib 252, through which the juice generated inside the juice separation cylinder 260 can be discharged to the outside.

[0182] Thus, in this embodiment, the slits 242 of the inner module 240 and the ribs 252 of the outer module 250 are combined to form an outflow hole for discharging juice through the gap between the slits 242 and the ribs 252, thereby making washing very convenient.

[0183] At this time, the rib 252 may be formed in a shape corresponding to the above-mentioned rib 242 , and in order to make the width of the rib 252 narrower toward the upper side, the width of the upper rib 252 may be smaller than the width of the lower rib 252 .

[0184] According to the shapes of the ribs 252 and the slits 242 as described above, when the outer module 250 and the inner module 240 are moved up and down to be combined, the upper part of the rib 252 with a relatively small width is inserted into the lower part of the slit 242 with a relatively large width, thereby making it easy to combine the outer module 250 and the inner module 240.

[0185] Furthermore, a plurality of juice discharge holes 253 may be formed at the lower end of the outer plate portion 251 .

[0186] In this way, the juice formed inside the juice separation cylinder 260 formed by the combination of the inner module 240 and the outer module 250 can be discharged to the outside of the juice separation cylinder 260 through the fine gaps, i.e., the slit holes, formed between the slits 242 of the inner module 240 and the ribs 252 of the outer module 250 and the juice discharge holes 253 formed on the outer module 250.

[0187] At this time, the gap formed between the slit 242 and the rib 252 is preferably formed so that the width of the gap increases gradually in the radial direction, so as to discharge the juice. For example, if the width of the slit 242 is formed so that the closer it is to the radial direction, the size of the gap gradually increases in the radial direction.

[0188] Furthermore, the slit is preferably formed such that the width of the slit becomes smaller as it goes downward in the length direction, thereby preventing slag generated by the increasingly fine pulverization downward from being discharged through the slit and supporting the strong pressure from the screw 230 .

[0189] A prescribed number of cartridge fixing portions 259 protruding horizontally are formed at the upper end of the outer module 250 and can be inserted into cartridge fixing grooves 2802 formed at the upper end of the juice extracting cartridge 280 to be described later, thereby fixing the position of the juice separation cartridge 260 in the juice extracting cartridge 280 .

[0190] Moreover, a specified number of recessed plug-in grooves 258 are formed on the lower end surface of the inner module 250. When the inner module 240 and the outer module 250 are combined, the plug-in protrusion 247 is inserted into the plug-in groove 258 formed on the bottom surface of the outer module 250, thereby combining the inner module 240 and the outer module 250.

[0191] In this embodiment, a juice separation cylinder 260 is used, in which an outflow hole is formed by combining the inner module 240 and the outer module 250, but a mesh cylinder with a plurality of circular mesh holes formed on the cylinder surface as is commonly used in the past may also be used. In addition, in this embodiment, a rib 252 is formed on the outer module 250, a slit 242 is formed on the inner module 240, and an outflow hole for discharging juice is formed when the inner module 240 and the outer module 250 are combined, but an outflow hole for discharging juice may also be formed by forming the rib 252 on the inner side surface of the juice extraction cylinder 280 without additionally forming the outer module 250, and inserting the inner module 240.

[0192] Below, refer to Figures 24 to 28 The juice cartridge 280 according to the embodiment of the present invention will be described in more detail.

[0193] Fig.24 yes Figure 4 A partially cutaway perspective view of the juice extraction cartridge shown, Fig.25 It is a graphic Fig.24A three-dimensional view of the juice extractor with the juice cover opened. Fig.26 It is a graphic Fig. 27 A perspective view of the back side of the juice cover shown, Fig. 27 It is a graphic Fig.24 A perspective view of the bottom surface of the juice extraction cartridge shown, Fig.28 yes Fig. 27 A three-dimensional view of the lower end of the slag discharge port is shown.

[0194] The overall shape of the juice extraction cylinder 280 is a cylindrical container shape, which accommodates the juice separation cylinder 260 and the screw 230 inside, and can be combined with the hopper 210 at the top as described above.

[0195] A waterproof cylinder 281 is formed protruding upward at the center of the bottom surface of the juice extractor 280. The waterproof cylinder 281 is formed with a through hole 2805. The lower rotating shaft 234 of the screw 230 can be inserted into the through hole 2805 and combined with the drive shaft 130. The waterproof cylinder 281 is formed to protrude upward to prevent juice from flowing into the drive shaft 130 through the through hole 2805. In addition, a packing ring 2811 made of rubber or silicone or the like is inserted into the edge of the through hole 2805, which can more effectively block the juice from flowing into the drive shaft 130. As shown in the figure, in the present invention, a double packing fixed between the upper side and the lower side of the upper end of the waterproof cylinder 281 and used to fill the upper side and the lower side at the same time can be used.

[0196] A juice outlet 285 for discharging juice and a residue outlet 284 for discharging residue may be provided at the outer lower end of the juice extraction cylinder 280 at positions separated from each other.

[0197] A plurality of clamping protrusions 2801 are formed on the inner side edge of the upper part of the juice extracting tube 280, and the coupling protrusions 2174 formed on the outer side edge of the lower end of the hopper housing 215 are arranged between the clamping protrusions 2801, and the hopper 210 is gently pressed downward and rotated so that the coupling protrusions 2174 are located below the clamping protrusions 2801, so that the juice extracting tube 280 and the hopper 210 can be coupled. At this time, the clamping protrusion 2801 has an anti-rotation edge 2803 at the end in the coupling direction, thereby preventing the coupling protrusion 2174 from further rotating, so as to maintain the coupling between the two components 210, 280.

[0198] Furthermore, when the coupling protrusion 2174 of the hopper 210 is disposed in the space between two adjacent engaging protrusions 2801, in order to enable the coupling protrusion 2174 to fully move in the left-right direction, it is preferred to ensure a wider space between the two engaging protrusions 2801. As described above, in the present invention, the lower rotating shaft 234 of the screw 230 is composed of an n-gonal angular shaft, and the shaft hole of the power transmission part 219 is composed of a 2n-gonal angular shaft hole. Therefore, the above-mentioned ensuring of a wider space is to allow the user to grasp the hopper 210 and rotate it to determine the position of inserting the power transmission part 219 into the lower rotating shaft 234 of the screw 230, thereby ensuring a rotation space.

[0199] Moreover, a fixing groove 2804 is formed on the outer side of the bottom surface of the juice extractor 280 , which is combined with the fixing protrusion 122 formed on the upper end surface of the main body 100 on which the driving shaft 130 is protruding, so that the juice extractor 280 can be fixed to the upper part of the main body 100 .

[0200] A first circular protrusion 282 is formed in the bottom plate surface of the juice extracting cylinder 280 at a position separated by a predetermined distance from the inner side surface of the juice extracting cylinder 280. The outer module 250 of the juice separation cylinder 260 is mounted on the inner side surface of the first circular protrusion 282. At this time, the juice separated from the juice separation cylinder 260 can be stored on the circular bottom plate surface between the inner side surface of the juice extracting cylinder 280 and the first circular protrusion 282 and discharged through the juice discharge port 285. The circular bottom plate surface is preferably formed to be inclined toward the juice discharge port 285 so that the juice flows to the juice discharge port 285 under its own weight.

[0201] Moreover, a second circular protrusion 283 is formed around the waterproof cylinder 281 on the bottom plate surface of the juice extractor 280. An inner ring 237 of the screw 230 is installed in the space between the second circular protrusion 283 and the waterproof cylinder 281, and an outer ring 238 is installed on the outer side of the second circular protrusion 283 to fix the position of the screw 230.

[0202] At this time, the present invention forms an embedded ring 2381 made of stainless steel on the inner side surface of the outer ring 238 to reduce the wear caused by friction between the outer ring 2381 and the second circular protrusion 283.

[0203] In order to discharge the squeezed juice separated in the juice separation cylinder 260, a slag discharge hole 2806 may be formed on one side of the outer bottom plate surface of the second circular protrusion 283. The slag discharge hole 2806 is connected to the slag discharge port 284, so that the slag inside the juice separation cylinder 260 can be discharged to the outside.

[0204] The slag filling material 287 formed of an elastic material such as rubber or silicone may be formed on the slag discharge hole 2806. One end of the slag filling material 287 is fixed on the bottom surface of the juice extraction cylinder 280, and the other end is fixed so as to be able to rotate freely. When no external force is applied to the outside from the juice separation cylinder 260, the slag filling material 287 closes the slag discharge hole 2806. When an external force is applied, the slag filling material 287 is elastically deformed to open the slag discharge hole 2806. Therefore, the slag inside the juice separation cylinder 260 reaches the bottom plate surface of the juice extraction cylinder 280 and pushes the slag filling material 287 to be discharged through the slag discharge port 284.

[0205] At this time, the slag discharge port 284 in the present invention is not formed in a shape fixed to one side of the juice extraction cylinder 280, but can be formed in a structure that is opened and closed by rotation.

[0206] As shown in the figure, the slag discharge hole 2806 where the slag filler 287 is fixed and the part forming the upper end of the slag discharge port 284 are integrally formed on the main body 100 of the juice extractor 280, and the slag discharge port lower end 2842 forming the lower end of the slag discharge port 284 can be rotatably hinged to the bottom surface of the juice extractor 280. A packing ring 2844 is installed on the top surface of the slag discharge port lower end 2842 in a manner of surrounding the slag discharge hole 2806 to prevent juice or slag from leaking out. On one side of the terminal portion of the slag discharge port lower end 2842, a "U"-shaped fixing ring 2843 is rotatably combined.

[0207] Therefore, if the lower end portion 2842 of the slag discharge port is rotated so as to be in close contact with the bottom surface of the juicer 280, and the fixing ring 2843 is rotated and fixed to the upper end portion 2849 which forms the slag discharge port 284 and protrudes toward the outside of the juicer 280, a slag discharge port 284 is formed for discharging the slag discharged through the slag discharge hole 2806.

[0208] On the contrary, if the fixing ring 2843 is rotated to release the connection, and the lower end portion 2842 of the slag discharge port is rotated downward, the slag filler 287 can be exposed to the outside, and the user can clean the slag filler 287 and the inner surface of the slag discharge port 284.

[0209] A juice cover 286 is rotatably connected to the end of the juice outlet 285. The juice cover 286 rotatably hinged to the upper part of the juice outlet 285 can open and close the juice outlet 285. In order to prevent juice from flowing out of the juice outlet 285, a packing 2861 is clamped inside the juice cover 286.

[0210] Next, a main body 100 according to an embodiment of the present invention will be described.

[0211] Fig.29 yes Figure 2 An exploded perspective view of the main body shown, Fig.30 yes Figure 3The three-dimensional diagram of the opening and closing sensor part is shown. Fig.31 yes Fig.29 An exploded perspective view of the moving motor shaft shown, Fig.32 It is a partially cutaway perspective view of the moving motor shaft for explaining the operation of the moving motor shaft.

[0212] The body 100 may include a lower body portion 120 and an upper body portion 110 .

[0213] The lower body 120 is supported from the bottom plate surface, and a driving shaft 130 is protruded from the top surface of the lower body 120 and rotated at a reduced speed by the motor 1001. When the juice extraction part 200 is coupled to the driving shaft 130, the lower rotating shaft 234 of the screw 230 can be inserted into the driving shaft 130 and transmit the rotational force of the driving shaft 130 to the screw 230.

[0214] A power line 102 is connected to one side of the lower end of the lower body 120 so that power can be received from the outside. A motor 1001 driven by an external power source and a speed reduction unit 1002 may be formed inside the lower body 120. The speed reduction unit 1002 is formed of a plurality of gears and is used to reduce the rotation speed of the motor 1001 and transmit it to the drive shaft 130.

[0215] The upper body 110 is formed to protrude upward from one side of the lower body 120, thereby supporting the outer side of the juice extracting part 200 when the juice extracting part 200 is coupled to the lower body 120. A control button 104 for controlling the driving of the juice extractor may be formed on the outer side of the upper body 110.

[0216] As shown in the figure, an anti-rotation key 112 that protrudes a predetermined length along the length direction may be formed on the inner side surface of the upper body 110. Corresponding to the anti-rotation key 112, an anti-rotation key slot 2159 for inserting the anti-rotation key 112 is formed on the outer side surface of the hopper 210. Figure 5 As shown, the anti-rotation keyway 2159 can be formed as an integral part below the anti-interference groove 2154.

[0217] When the juice extracting part 200 is coupled to the main body 100, the anti-rotation key 112 is inserted into the anti-rotation key slot 2159 to be coupled. Therefore, according to the coupling structure of the anti-rotation key slot 2159 and the anti-rotation key 112, the circumferential position of the juice extracting part 200 can be fixed. Moreover, when the screw 230 is reversed, the clamping connection between the juice extracting barrel 280 and the hopper 210 can be released, and the rotation of the hopper 210 is blocked by the coupling structure to prevent this problem.

[0218] As described above, in the present invention, for the safety of the user, the hopper 210 cannot be clamped to the upper part of the juicer barrel 280 when only the juicer barrel 280 is installed on the main body 100, and the juice extracting part 200 can be combined with the main body 100 only when the hopper 210 is clamped on the juicer barrel 280. The hopper 210 and the juicer barrel 280 are fixed by the combination between the combination protrusion 2174 and the clamping protrusion 2801. If the combination protrusion 2174 and the clamping protrusion 2801 are rotated to combine the juicer barrel 280 and the hopper 210 when only the juicer barrel 280 is installed on the main body 100, the anti-rotation key slot 2159 and the anti-rotation key 112 are not in accordance with each other and cannot be combined. Furthermore, when the hopper 210 is fixed to the upper body 100 by aligning the positions of the anti-rotation key slot 2159 and the anti-rotation key 112, the positions of the coupling protrusion 2174 and the clamping protrusion 2801 cannot be aligned with each other for coupling. Therefore, in the present invention, the juice extraction unit 200 can be coupled to the body 100 only when the juice extraction cylinder 280 is coupled to the hopper 210.

[0219] A slag discharge connection hole 113 communicating with the slag discharge port 284 is formed at one side of the bottom surface of the upper body 110. Also, a slag cup 125 may be detachably mounted at one side of the lower body 120. When the slag cup 125 is incorporated in the lower body 120, slag discharged through the slag discharge port 284, the end of which is inserted into the discharge connection hole 113, may be stored.

[0220] An opening / closing sensor 115 for sensing the opening / closing of the cover 220 may be fixedly installed inside the upper body 110 .

[0221] like Fig.30 As shown, the opening and closing sensor 115 can be formed by a micro switch, and a second magnet 1102 is fixed to the end of a rotating rod 1151 extending outward. The second magnet 1102 generates magnetic force with the first magnet 2211 fixed to the magnet arrangement part 221 of the cover body 220. When the cover body 220 is opened and closed, the magnet arrangement part 221 rotates, and the magnetic force between the first magnet 2211 and the second magnet 1102 (generating an attractive force or a repulsive force according to the polarity of the first magnet 2211 and the second magnet 1102) changes accordingly. As the magnetic force changes, the position of the second magnet 1102 changes. Therefore, according to the change in the position of the second magnet 1102, the rotating rod 1151 moves so that the sensor in the opening and closing sensor 115 senses the opening and closing state of the cover body 220.

[0222] When the cover 220 is opened, the power supply to the motor 1001 is cut off to prevent the screw 230 from rotating.

[0223] A driving shaft 130 is protrudingly formed on the top surface of the lower body 120. Although the lower rotating shaft 234 can be directly coupled to the driving shaft 130, in the present invention, a flow driving shaft is used to automatically couple the driving shaft 130 with the lower rotating shaft 234 of the screw 230. The structure of the flow driving shaft will be described in detail below.

[0224] The drive transmission part 310 is inserted into and coupled to the drive shaft 130 protruding to the outside of the main body 100. At this time, the drive shaft 130 can be formed as an angular shaft, and the drive transmission part 310 can be formed as an angular shaft hole, and the drive transmission part 310 can be coupled to the drive shaft 130 by matching each other, so that the drive transmission part 310 can be linked with the drive shaft 130 and rotate together.

[0225] If the shape of the drive transmission part 310 is described in more detail, the drive transmission part 310 includes a motor shaft coupling part 311 formed as an angular shaft hole and coupled to the angular drive shaft 130, and a screw coupling part 312 formed as an angular shaft at the upper part of the motor shaft coupling part 311. The screw coupling part 312 matches the lower rotating shaft 234 of the screw 230 formed as an angular shaft hole.

[0226] At this time, a coil spring 315 is provided between the drive transmission part 310 and the drive shaft 130, and the drive transmission part 310 can be elastically moved in the axial direction on the drive shaft 130. In more detail, a spring insertion shaft 317 extending upward from the upper end of the drive shaft 130 is formed, and the coil spring 315 can be sleeved on the spring insertion shaft 317. At this time, a head 318 forming a step in the radial direction of the shaft can be further formed at the upper end of the spring insertion shaft 317. At this time, the spring insertion shaft 317 as described above can be composed of a screw 319 threadedly coupled to the upper end of the drive shaft 130.

[0227] Furthermore, a stepped hole 313 is formed at the upper end of the angular shaft hole of the motor shaft coupling portion 311, which forms a step toward the shaft center direction, and the upper end of the spring insertion shaft 317 can be inserted into the stepped hole 313. At this time, when the drive transmission portion 310 moves downwardly, the step formed by the stepped hole 313 contacts the upper end of the drive shaft 130, thereby forming the lower limit of the drive transmission portion 310.

[0228] Furthermore, a stepped snap-in groove 311 may be formed at the lower end of the motor shaft coupling portion 311, and a protruding snap-in edge 132 may be correspondingly formed at a specified position on the outer peripheral surface of the drive shaft 130, so that the snap-in groove contacts the snap-in edge when the drive transmission portion 310 moves downwardly, thereby forming the lower limit of the drive transmission portion 310.

[0229] An inner protrusion 314 protruding toward the inner shaft center direction may be formed in the middle of the step hole 313. When the drive transmission part 310 moves downwardly toward the shaft, the inner protrusion 314 contacts the upper end of the coil spring 315 and compresses the coil spring 315. Moreover, due to the elastic potential energy of the coil spring 315, when the drive transmission part 310 moves upwardly toward the shaft, the inner protrusion 314 contacts the head 318, and at this time, the head 318 forms the upper limit of the drive transmission part 310.

[0230] Moreover, a cover 3101 for blocking the opening may be formed at the upper end of the drive transmission part 310. The screw 319 is inserted through the upper end opening of the drive transmission part 310 and coupled to the drive shaft 130. At this time, a step may be formed at the upper end of the drive transmission part 310, and the cover 3101 is installed on the step to cover the upper end opening of the drive transmission part 310. At this time, the cover 3101 is used to prevent juice from penetrating between the head 318 of the screw 319 and the inner side surface of the screw coupling part 312.

[0231] Therefore, when there is no force to pressurize the driving transmission part 310 from the upper part to the lower part, as shown in FIG. Fig.32 As shown in (a), the drive transmission part 310 is located at the upper limit position by the elastic force of the coil spring 315, and when the drive transmission part 310 is pressed from the upper part to the lower part, the drive transmission part 310 moves toward the lower part of the shaft, and as shown in Fig.32 At this time, the coil spring 315 is compressed to preserve elastic potential energy. When the pressure on the upper part of the drive transmission part 310 is released, the drive transmission part 310 elastically moves to the upper limit position again due to the elastic potential energy of the coil spring 315.

[0232] When the juice extracting unit 200 is mounted on the main body 100 , when the lower rotating shaft 234 of the screw 230 matches with the screw coupling portion 312 of the drive transmission unit 310 , the driving force of the drive shaft 130 may be transmitted to the screw 230 through the drive transmission unit 310 .

[0233] On the contrary, when the lower rotating shaft 234 of the screw 230 does not match the screw coupling portion 31 of the drive transmission part 310 , the screw 230 presses the drive transmission part 310 to move the drive transmission part 310 downwardly.

[0234] In this state, if the motor 1001 is rotated, the drive transmission part 310 coupled to the drive shaft 130 rotates, and the screw coupling part 312 on the upper part of the drive transmission part 310 is located at a position matching the lower rotating shaft 234 of the screw 230. At this time, due to the elastic potential energy of the coil spring 315, the drive transmission part 310 elastically moves upwardly and automatically matches the lower rotating shaft 234, so that the driving force of the drive shaft 130 can be transmitted to the screw 230.

[0235] The present invention is not limited to the above-mentioned embodiments, but can be implemented by various embodiments within the scope of the claims. Therefore, within the scope of the spirit of the present invention as claimed in the claims, various ranges that can be deformed by those skilled in the art are within the protection scope of the present invention.

Claims

1. A juicer, comprising: a juicing cylinder, which internally accommodates a screw for squeezing juicing material; and A hopper, combined with the upper portion of the juice extraction cylinder, and formed with a space for accommodating the juice extraction material; and a cutting unit that rotates inside the hopper to crush or cut the juice material before the juice material put into the hopper is supplied to the juice cylinder, The juice extractor supplies the cut juice material to the interior of the juice extracting cylinder located below the hopper through a discharge hole formed on the lower end surface of the hopper. The cutting part is supported only on the lower end side of the hopper, and an open space is formed inside the hopper. The open space opens the entire upper side of the cutting part so that the juice material can be put in. The cutting portion comprises: The chopping blade is formed to extend upward in a spiral shape at the rotation center, and the upper end of the chopping blade has a smaller cross-section as it approaches the end, thereby being sharper; and A cutting blade is formed extending in the horizontal direction on the lower end surface of the hopper, and the cutting blade has a predetermined thickness in the vertical direction so as to push out the juice material from the front in the rotation direction. A first inner protrusion is formed on the inner side surface of the hopper, the first inner protrusion protrudes long inward in the vertical direction and supports the juice material when the chopping blade rotates, and the lower end of the first inner protrusion is formed above the lower end surface of the hopper and is separated from the lower end surface of the hopper.

2. The juice extractor according to claim 1, wherein: The splitting blade is formed to extend upward in a spiral shape along the rotation direction of the cutting portion.

3. The juice extractor according to claim 1, wherein: The splitting blade has a thick wall at the rotation center and is formed to extend upward in a spiral shape.

4. The juice extractor according to claim 1, wherein: An inclined curved surface for guiding the juice extracting material to move downward is formed on the radial inner side surface of the chopping blade.

5. The juice extractor according to claim 1, wherein: The splitting edge and the cutting edge are formed to extend in opposite directions from each other at the rotation center.

6. The juice extractor according to claim 5, wherein: The blade tip of the splitting blade is in a shape that is curved toward the cutting blade, or the blade tip of the cutting blade is in a shape that is curved toward the splitting blade.

7. The juice extractor according to claim 1, wherein: The cutting blade has a shape that is curved in a direction opposite to the rotation direction of the cutting portion.

8. The juice extractor according to claim 1, wherein: The height of the tip of the splitting blade is higher than the height of the upper end surface of the cutting blade.

9. The juice extractor according to claim 1, wherein: The splitting edge and the cutting edge are formed integrally.

10. The juice extractor according to claim 1, wherein: A blade is formed at the upper end where the inclined surfaces of the front and rear sides of the cutting blade in the rotation direction meet.

11. The juice extractor according to claim 1, wherein: A through groove penetrating both sides of the protrusion is formed at the lower end of the first inner protrusion, and the upper end of the chopping blade is located below the lower end of the first inner protrusion and spaced apart from the lower end of the first inner protrusion to allow the cut juicing material to pass through.

12. The juice extractor according to claim 1, wherein: The upper end of the splitting blade is located below the lower end of the first inner protrusion.

13. The juice extractor according to claim 1, Further including: The second inner protrusion is formed to protrude inwardly at a position where the tip of the cutting blade is located on the inner side surface of the hopper and is used to separate the juice material on the upper part of the cutting blade.

14. The juice extractor according to claim 1, wherein: The hopper comprises: a hopper shell, the upper part of which is open and the cutting part is installed on the lower end surface; and a cover part, which is hinged to the upper end of the hopper shell and is used to open and close the upper part. The juice extractor is formed with a safety guide portion, which is formed to protrude downward along the edge of the lower end surface of the cover body and is inserted into the inner side of the upper end portion of the hopper.

15. The juice extractor according to claim 14, wherein: The safety guide portion is formed so that its protruding height increases as it is farther from a position hinged to the hopper housing.

16. The juice extractor according to claim 1, wherein: The hopper includes: a hopper shell, the upper part of which is open and the cutting part is installed on the lower end surface; and a cover body part, which is combined with the upper end of the hopper shell and is used to open and close the upper part, and a hole for inserting a pushing rod is formed on the cover body part, and the hole is formed on the upper side of the rotation center of the cutting part.

17. The juice extractor according to claim 1, wherein: At least one discharge hole is formed on the lower end surface of the hopper to allow the juicing material crushed in the hopper to move to the interior of the juicing cylinder located below. The discharge hole is formed such that its width gradually increases along the rotation direction of the cutting portion.

18. The juice extractor according to claim 17, wherein: An inclined surface is formed on the inner side surface of the bottom plate surface of the hopper, the inclined surface being inclined downward toward the discharge hole along the rotation direction of the cutting portion.

19. The juice extractor according to claim 17, wherein: An inclined surface is formed on the outer side of the bottom plate surface of the hopper, the inclined surface being inclined downward from the distal end of the discharge hole along the rotation direction of the cutting portion.

20. The juice extractor according to claim 1, wherein: The invention further comprises a juice separation cylinder disposed between the juice extraction cylinder and the screw, wherein the juice separation cylinder is formed with an outflow hole for discharging juice generated from the juice extraction material to the outside to separate juice and dregs. The juice separation cylinder comprises: An inner module, comprising an inner plate portion with upper and lower ends opened and a plurality of slits formed on the inner plate portion; and The outer module includes an outer plate portion that removably accommodates the inner module therein and a rib that protrudes from the inner side surface of the outer plate portion so as to be inserted into the slit of the inner plate portion. When the outer module surrounds and is coupled to the inner module, an outflow hole, i.e., a gap, for allowing the juice to flow out is formed between the cut and the rib.

21. The juice extractor according to claim 20, wherein: An expansion portion whose radius increases toward the upper portion is formed at the upper end portion of the inner module.

22. The juice extractor according to claim 21, wherein: At least one discharge hole is formed on the lower end surface of the hopper to allow the juicing material crushed in the hopper to move to the interior of the juicing barrel located below, and at least one material inflow guide portion is formed on one side of the expansion portion. The material inflow guide portion is a curved surface portion gradually toward the inside along the rotation direction of the screw, and at least one of the material inflow guide portions is located below the discharge hole.

23. The juice extractor according to claim 1, wherein: The screw is formed with one or more screw threads that are formed to protrude in a spiral shape on the outer peripheral surface of the screw body, and the screw is a single-edged screw in which one screw thread is extended toward the upper end of the screw body to form a single-edged screw. The single blade is formed to protrude radially toward the longest radius outside of the screw body.

24. The juice extractor according to claim 1, wherein: The screw is divided into: an upper cutting section for further cutting the juice material fed from the hopper; and a juice extraction section for squeezing the juice material to generate juice below the cutting section. An over-injection prevention rib protruding in an annular shape is formed at the upper end of the juice extraction zone.

25. The juice extractor according to claim 1, wherein: The screw is formed with a gripping portion, which is protruded at the upper end of the screw body so as to have a predetermined horizontal angle with a single blade formed at the upper end of the screw body, so that a person can grasp the single blade and the screw together.

26. The juice extractor according to claim 1, Further comprising a main body, the main body comprising: A lower main body portion, formed with a driving shaft protruding upward and used to support the lower end surface of the juice extractor cylinder; and an upper main body portion, which is formed on one side of the lower main body portion and protrudes upward and is used to support the side of the juice extraction cylinder and the hopper, The upper main body is formed with an anti-rotation key protruding long in the vertical length direction, and an anti-rotation key groove for inserting the anti-rotation key is formed on the outer side surface of the hopper.

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