Juicer

Abstract

The present invention relates to a juicer, the juicer of the present invention comprises a cutting part for pre-cutting a juicing material by rotation in a hopper above a screw, and is characterized in that a discharge part formed on a bottom plate surface of the hopper for transferring the cut juicing material downward comprises a through hole and a stepped part, the through hole is vertically through in the circumferential direction, and the step part is sunken downwards from the inner side face of the bottom plate on the outer side of the through hole, so that a step is formed in the rotating direction of the cutting part.

Description

Technical Field

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

[0002] For health reasons, there is an increasing trend of preparing and consuming green juice or fruit juice directly at home. To this end, many devices that can easily prepare juice using vegetables or fruits at home have been disclosed.

[0003] In the past, juicers put ingredients into the inlet and crushed them with high-speed rotating blades to make juice by centrifugal separation. However, the high-speed crushing process of such juicers may destroy the original taste and nutritional components of the ingredients, and it is difficult to make green juice with vegetables with stems or leaves, and it is difficult to make juice with fruits with high viscosity such as kiwis or strawberries, and it is impossible to make soy milk with soybeans.

[0004] In order to solve the above-mentioned problems, the technical solution disclosed in Korean Patent No. 10-0793852 is a method of squeezing and crushing materials between a mesh cylinder and a low-speed rotating screw, which has the following effects: that is, soybeans are made into soy milk by the principle of grinding and squeezing with a grindstone, and fruits with high viscosity such as tomatoes, kiwis, strawberries, etc. are made into juice by grinding and squeezing on a steel plate, thereby solving the problems of the previous juicers mentioned above.

[0005] However, in this case, due to the size of the screw and the size of the input port, it is troublesome to cut the material into small pieces before inputting the material into the input port. The size of the input port is made according to the size of the screw to input the material of appropriate size.

[0006] Therefore, a juicer is proposed, which includes a hopper, which is combined with the upper part of a juicer barrel containing a screw inside and is used to store juice materials. The juicer can pre-cut a large-sized juice material such as a whole fruit before it is put into the juicer barrel by a cutting part rotating inside the hopper. At this time, the juice material pre-cut in the hopper is transferred to the juicer barrel through a discharge port formed on the bottom plate surface of the hopper, and juice is squeezed.

[0007] The larger the diameter of the screw, the smaller the torque of the motor. Therefore, when a large amount of juice material is fed from the hopper, a load is applied to the screw, which may lead to a sharp drop in efficiency. Therefore, it is necessary to move an appropriate amount of juice material that can be digested by the screw downward through the discharge port.

[0008] Thus, it may be thought that if the size of the discharge port formed on the bottom plate of the hopper is reduced, the amount of the juice material fed from the hopper can be reduced, but if the size of the discharge port is small, there is a problem that the juice material cannot be smoothly fed downward. In other words, the amount of the juice material fed to the juice cylinder cannot be easily adjusted by the size of the discharge port alone.

[0009] The present invention provides a discharge port structure and a screw structure, which can smoothly feed an appropriate amount of juice extraction material downward even if the size of the discharge port is small.

[0010] Prior art document: Korean Patent No. 10-0793852 Summary of the invention

[0011] The present invention is proposed to solve the above-mentioned conventional problems, and its purpose is to provide a juicer, wherein the juicer includes a hopper, wherein the hopper is coupled to the top of a juice extraction cylinder, and a larger juicing material such as a whole fruit is pre-cut by a cutting portion rotating inside the hopper and is dropped downward. The juicer changes the shape of a discharge portion formed on a bottom plate surface of the hopper, so that an appropriate amount of juicing material can be smoothly dropped in even if the size of the through hole is small.

[0012] The problems to be solved by the present invention are not limited to the problems mentioned above. For other problems not mentioned, those skilled in the art to which the present invention belongs should be able to clearly understand through the following description.

[0013] The above object can be achieved by the juicer of the present invention, which includes a hopper having a space for accommodating juice material and a cutting part that pre-cuts the juice material by rotating in the hopper and transfers it to a screw below the hopper, wherein the screw includes a touching part that protrudes upwardly from the screw body to touch the juice material stuck in a through hole formed on the bottom plate surface of the hopper.

[0014] Here, the upper end of the contact portion may be located below the lower end of the through hole on the bottom plate surface of the hopper.

[0015] Here, the screw may include a screw upper end blade, which is a horizontal blade formed by the screw thread of the screw extending toward the upper end of the screw body, and the upper end of the contact portion is located above the screw upper end blade.

[0016] Here, an inclined surface directed toward the through hole may be formed along a radial direction on an outer surface of a bottom plate of the hopper, and an inclined surface corresponding to the inclined surface may be formed on an inner surface of an upper end portion of the contact portion.

[0017] Here, it is preferred that an upper end surface of the abutment portion is located at a radial center of the through hole.

[0018] Here, the contact portion may be formed in plural.

[0019] In addition, the purpose can be achieved by the juicer screw of the present invention, wherein the screw includes a touch portion, which protrudes upward from the screw body and is used to touch the juice material stuck in the inlet where the juice material is inserted from above the screw.

[0020] According to the juice extractor of the present invention as described above, even if the through hole formed in the bottom plate surface of the hopper is small in size, an appropriate amount of pre-cut juice extracting material can be smoothly transferred downward, thereby having an advantage of being able to improve juice extracting efficiency.

[0021] Since the juice material is cut and stirred in the hopper and then provided to the juice cylinder, there is no need to pre-cut the juice material, which has the advantage of improving the convenience of use for users.

[0022] 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, thereby having the advantage that a larger amount of juice material can be put into the hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a juice extraction unit according to an embodiment of the present invention.

[0024] Figure 2 Yes means Figure 1 A three-dimensional cutaway view of the interior.

[0025] Figure 3 This is a three-dimensional exploded view of the juice extraction unit.

[0026] Figure 4 It is a three-dimensional cutaway view of a juicer.

[0027] Figure 5 It is a top view of the juicer.

[0028] Figure 6 It is a three-dimensional diagram of the screw.

[0029] Figure 7 is a side view of the screw.

[0030] Figure 8 It is a three-dimensional exploded view of the screw.

[0031] Fig. 9 This is a diagram showing the contact portion of the screw and the through hole.

[0032] Fig.10It is a three-dimensional cutaway view showing the interior of the hopper.

[0033] Fig.11 It is a perspective view showing the inner side of the bottom plate of the hopper.

[0034] Fig.12 It is a top view showing the inner side of the bottom plate of the hopper.

[0035] Fig.13 It is a three-dimensional view showing the outer side of the hopper bottom plate.

[0036] Fig.14 It is a top view showing the outer side of the hopper bottom plate.

[0037] Fig.15 It is a three-dimensional diagram of the cutting part.

[0038] Fig.16 and Fig.17 yes Fig.15 Side view of the cutting portion.

[0039] Fig.18 It is a three-dimensional diagram showing the bottom surface of the cutting portion. DETAILED DESCRIPTION

[0040] Detailed description of the embodiments is included in the detailed description and drawings.

[0041] The advantages and features of the present invention, as well as the methods for achieving these 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 embodiments disclosed below, but can be implemented in various forms. This embodiment is only used to fully disclose the present invention and is provided to fully inform the scope of the invention to those skilled in the art. The present invention should be limited by the scope of the claims. Throughout the specification, the same reference numerals refer to the same structural elements.

[0042] Hereinafter, the present invention will be described with reference to the embodiments of the present invention and the accompanying drawings for explaining a juice extractor.

[0043] Figure 1 is a three-dimensional diagram of a juice extraction unit according to an embodiment of the present invention, Figure 2 Yes means Figure 1 A three-dimensional cutaway view of the interior. Figure 3 This is a three-dimensional exploded view of the juice extraction unit.

[0044] The juice extractor according to an embodiment of the present invention can be divided into two major parts: a main body (not shown) and a juice extracting part 10 .

[0045] The juice extracting part 10 is installed and fixed on the upper part of the main body, and receives a power source from the outside to provide a driving force, which rotates the motor arranged inside the main body, thereby rotating the screw 300 constituting the juice extracting part 10. A driving shaft may be protrudingly formed on the upper surface of the main body, and the driving shaft is coupled to the screw 300, and the driving shaft transmits power to the screw 300. The main body is a basic structure of a conventional juice extractor, so detailed description thereof is omitted.

[0046] As shown in the figures, the juicing part 10 may be configured to include a hopper 100 , a juicing cylinder 400 , and a screw 300 .

[0047] The juice extracting part 10 can be assembled by combining the hopper 100 on the upper part of the juice extracting cylinder 400 with the screw 300 installed inside the juice extracting cylinder 400 .

[0048] The hopper 100 has an internal space into which a large-sized juicing material such as a whole fruit can be put. A rotating cutting part 200 is arranged in the hopper 100, so that the put-in juicing material can be pre-cut. The juicing material pre-cut in the hopper 100 can be transferred to the inside of the juicing cylinder 400 located below the hopper 100 through the discharge part 120 including a through hole 121 formed on the bottom plate surface of the hopper 100. The juicing material that has been pre-cut and transferred to the inside of the juicing cylinder 400 can be crushed and squeezed by the screw 300 that receives power from the main body and rotates to generate juice.

[0049] After the generated juice and the remaining residue are separated, they can be discharged through the juice outlet 420 and the residue outlet 421, respectively. At this time, a mesh cylinder (not shown) formed with fine mesh holes for separating juice and residue can be arranged between the juice extraction cylinder 400 and the screw 300. The juice generated by squeezing can be transferred to the outside of the mesh cylinder through the mesh holes, thereby being separated from the residue inside the mesh cylinder. However, in this embodiment, an additional mesh cylinder may not be provided, but the juice generated by squeezing is transferred to the inside of the screw 300, thereby being separated into the residue outside the screw 300 and the juice inside the screw 300. The detailed structure of the screw 300 in this regard will be described later.

[0050] Next, the structural elements constituting the juice extraction unit 10 will be described in more detail with reference to the accompanying drawings.

[0051] First, refer to Figure 4 and Figure 5 , the juice extractor 400 of the present invention is described.

[0052] Figure 4 This is a three-dimensional cutaway view of a juicer. Figure 5 It is a top view of the juicer.

[0053] The juice extracting cylinder 400 accommodates the screw 300 inside, and plays the role of crushing and squeezing the juice extracting object through interaction with the screw 300. A plurality of first ribs 401 may be protrudingly formed on the inner circumferential surface of the juice extracting cylinder 400.

[0054] The first ribs 401 may be arranged spaced apart from each other around the inner circumference of the juicer 400, and each first rib 401 may extend along the vertical length direction of the juicer 400, or extend slightly inclined relative to the vertical direction of the juicer 400. The first ribs 401 are preferably formed in the entire section of the vertical length direction of the juicer 400.

[0055] The first rib 401 can more effectively realize the squeezing and crushing operation of the juicing object under the interaction with the screw 300. The first rib 401 plays the role of a card table, which makes the juicing object move smoothly by increasing the friction force of the inner peripheral surface of the juicing cylinder 400, thereby preventing the juicing object from not moving to the bottom of the juicing cylinder 400 and stagnating.

[0056] In addition, the first rib 401 can generate a greater squeezing force and crushing force on the object to be squeezed. When the object to be squeezed is stuck on the first rib 401 and supported, the object can be squeezed by the screw thread 313 (in the outer peripheral surface of the rotating screw 300) Figure 6 The interaction of the components (pictured in the figure) to crush and squeeze the juicing object.

[0057] In addition, a plurality of second ribs 402 may be formed on the inner circumferential surface of the juice extraction cartridge 400 .

[0058] Similar to the first ribs 401 , the second ribs 402 may be spaced apart from each other around the inner circumference of the juice cartridge 400 , and may extend along the length direction of the juice cartridge 400 , or extend slightly inclined relative to the length direction of the juice cartridge 400 .

[0059] The second rib 402 may be formed in a partial section of the length direction of the juice cartridge 400 (eg, a lower end portion of the juice cartridge 400 ) to have a length shorter than that of the first rib 401 .

[0060] The second rib 402 can work together with the first rib 401 to generate a greater squeezing force and a crushing force on the juicing object. The second rib 402 can work together with the first rib 401 in the lower end of the space of the juicing cylinder 400 to further crush the juicing object that was preliminarily crushed by the first rib 401 at the upper end of the juicing cylinder 400, thereby crushing the juicing object more finely and evenly.

[0061] When the second rib 402 is formed in the middle part, but not in the lower end of the juicer 400, the object of juicing is finely crushed in the middle part of the juicer 400, so that the particle size of the object of juicing is sharply reduced, which may cause the object of juicing to be unable to get stuck on the inner circumferential surface of the juicer 400 at the lower end of the juicer 400, and rotate with the screw 300. At this time, the object of juicing cannot be smoothly transferred to the lower end of the juicer 400, but is stagnant, so that when the object of juicing is further put into the juicer, it is inconvenient to forcibly press the object of juicing. However, when the second rib 402 is formed at the lower end of the juicer 400, the particle size of the object of juicing will change in stages, so that the object of juicing can be smoothly transferred to the lower end of the space of the juicer 400, and the object of juicing transferred to the lower end of the juicer 400 can be crushed into a finer one.

[0062] In addition, when the second rib 402 is formed at the lower end of the juicer 400, the juicing object is smoothly transferred from the upper end to the lower end of the juicer 400, and the pressure of the residue of the juicing object on the juicer 400 and the screw 300 will gradually increase. Under this pressure, the juice of the juicing object can smoothly flow into the interior of the separation screw 300 through the gap formed between the baffle 315 and the rib 323 of the separation screw 300 described later, and be discharged to the outside of the juicer 400.

[0063] The first rib 401 and the second rib 402 are not necessarily formed along the length direction of the juicer 400. As long as effective transfer and squeezing of the juice object can be achieved, they can be formed in a form having a specified inclination with the length direction of the juicer 400 and intersecting with the spiral screw thread 313 formed on the outer surface of the screw 300.

[0064] A plurality of third ribs 403 may be further formed on the inner circumferential surface of the juice extracting cartridge 400. The third ribs 403 may be formed between the first ribs 401 or between the second ribs 402.

[0065] Similar to the first rib 401 or the second rib 402 , the third rib 403 may extend in the length direction of the juice extraction cartridge 400 , and the length of the third rib 403 may be shorter than that of the first rib 401 and longer than that of the second rib 402 .

[0066] When the third rib 403 is further formed, the number of ribs for crushing the object to be squeezed increases in sequence from the upper end to the lower end in the length direction of the juicer 400. In other words, the object to be squeezed is crushed by the first rib 401 at the uppermost end of the juicer 400, crushed by the first rib 401 and the third rib 403 at the next height, and crushed by the first rib 401, the second rib 402, and the third rib 403 at the next height, so that the object to be squeezed can be gradually crushed and moved more smoothly to the lower part of the juicer 400.

[0067] A waterproof cylinder 411 may be formed at the center of the juice extractor 400, and the waterproof cylinder 411 extends upward from the bottom plate of the juice extractor 400 and forms a lower rotating shaft 321 (at the bottom of the screw 300) for the screw 300 to rotate. Figure 6 The waterproof cylinder 411 extending upward from the bottom plate of the juice extracting cylinder 400 is used to prevent the juice in the juice extracting cylinder 400 from flowing out through the cylinder hole H.

[0068] Below the juice extraction cylinder 400 , the lower rotation shaft 321 of the screw 300 and a driving shaft (not shown) protruding from a body (not shown) may be coupled through the cylinder hole H. Therefore, the driving force of the motor may be transmitted to the screw 300 through the coupling.

[0069] As described later, the screw 300 of this embodiment is a separation screw 300 composed of a first module 310 and a second module 320, and can transfer juice generated by squeezing juice to the inside of the separation screw 300 to separate the juice and residue.

[0070] like Figure 5 As shown, a juice discharge hole 412 is formed on the inner side of the separation screw 300 in the bottom plate surface of the juice extractor 400 where the separation screw 300 is placed, and the juice discharge hole 412 is used to discharge the juice of the juicing object that flows into the separation screw 300, and a residue discharge hole 413 is formed on the outer side of the separation screw 300 in the bottom plate surface of the juice extractor 400, and the residue discharge hole 413 is used to discharge the residue of the juicing object.

[0071] The juice discharge hole 412 is connected to the juice discharge port 420 and is used to discharge the juice of the juicing object to the outside of the juicing barrel 400. The residue discharge hole 413 is connected to the residue discharge port 421 and is used to separate the residue of the juicing object from the juice and discharge them to the outside of the juicing barrel 400.

[0072] At least one coupling protrusion 410 is formed on the inner edge of the upper portion of the juice extracting cylinder 400, and the coupling protrusion 410 is a member coupled to the lower portion of the hopper 100. In the embodiment of the present invention, the coupling protrusion 410 is formed along the upper inner peripheral surface of the juice extracting cylinder 400, and is formed in a protrusion shape bent at a right angle, and the protrusion in the horizontal direction is formed so that the thickness thereof increases from one side to the other side.

[0073] Next, refer to Figures 6 to 9 , the screw of the present invention will be described.

[0074] Figure 6 This is a three-dimensional diagram of the screw. Figure 7 is a side view of the screw, Figure 8 This is a three-dimensional exploded view of the screw. Fig. 9 This is a diagram showing the contact portion of the screw and the through hole.

[0075] The juice extracting cylinder 400 is formed in a cylindrical shape with an open top, and a separation screw 300 is arranged inside. The screw 300 receives a rotation force from the main body driving shaft to rotate, and squeezes and crushes the juice extracting material under interaction with the juice extracting cylinder 400.

[0076] like Figure 8 As shown, the screw 300 of the present invention is constructed by a first module 310 and a second module 320 which are substantially cylindrical in shape, and the first module 310 and the second module 320 are detachable from each other.

[0077] The first module 310 may be configured to include a main body 312, which is formed into a cylindrical shape with a hollow interior. The shape of the main body 312 is described in more detail as follows. As shown in the figure, the main body 312 is generally formed into a cylindrical shape. The upper end of the first module 310 may be formed in a shape in which the radius decreases as it approaches the upper part.

[0078] The main body 312 may have a shape with an open lower end and a closed upper end, and may have at least one screw thread 313 formed on the outer side. In addition, a screw upper end blade 313a may be formed on the upper end of the screw body. The screw thread 313 may be formed protrudingly in a spiral shape on the outer side of the main body 312, and one of the screw threads 313 may extend to the uppermost part of the screw 300 and form a horizontal screw upper end blade 313a.

[0079] The blade 313a at the upper end of the screw is mainly responsible for cutting the juicing material and moving the juicing material downward along the surface of the connected screw thread 313. The screw thread 313 with a lower protruding height at the lower part of the screw 300 below the blade 313a at the upper end of the screw is mainly responsible for crushing and squeezing the crushed smaller-sized juicing material into a further smaller size for juicing.

[0080] A plurality of slits 314 may be formed in the main body 312 along the circumferential direction. The slits 314 may be formed extending in the axial direction in a form extending toward the lower end of the main body 312. A baffle 315 is formed between two adjacent slits 314. In this way, since a plurality of slits 314 are formed in the circumferential direction, a plurality of baffles 315 may also be formed in the circumferential direction. The intervals between the slits 314 are preferably formed to be constant, but are not necessarily limited thereto.

[0081] like Figure 6 As shown, a lower rotating shaft 321 protruding downward may be formed in the hollow center of the first module 310 , and the lower rotating shaft 321 may be combined with a driving shaft (not shown) and receive power.

[0082] In addition, an upper rotating shaft 311 protruding upward may be formed at the upper end of the first module 310, and the upper rotating shaft 311 may be connected to the cutting part 200 inside the hopper 100 through a connecting hole 115 formed on the lower end surface of the hopper 100, and transmit the rotating force of the screw 300 to the cutting part 200. The detailed structure of this will be described later.

[0083] like Figure 8 As shown, the second module 320 may be configured to include a main body portion 322 and a slag discharge guide portion 324 .

[0084] The main body 322 is cylindrical and is inserted into the hollow of the first module 310 .

[0085] A plurality of long strip-shaped ribs 323 may be formed along the circumferential direction on the main body 322 , and the ribs 323 extend along the axial direction. In addition, in this embodiment, the ribs 323 may be formed to protrude from the outer side of the main body 322 to the radial outer side.

[0086] Since the ribs 323 are to be inserted into the slits 314 of the first module 310, the intervals of the ribs 323 may be the same as the intervals of the slits 314. At this time, the width of the ribs 323 may be formed to be slightly smaller than the width of the slits 314.

[0087] A juice passing hole 326 for allowing juice to move toward the inside of the separation screw 300 may be formed between adjacent ribs 323. When the juice passing hole 326 is formed in a large space between adjacent ribs 323, or when the juice passing hole 326 is formed in the entire space between adjacent ribs 323, the second module 320 is formed in a form in which the ribs 323 are long and extend downward on the main body 322 having an annular or disc-shaped upper end. That is, according to the form of the juice passing hole 326, the main body 322 may be formed in a cylindrical (annular) shape having a shorter upper and lower length only on the upper end of the rib 323, or may be formed in a long cylindrical shape including the upper and lower length of the entire rib 323.

[0088] In addition, although the lower ends of the plurality of ribs 323 may be additionally supported by a ring shape, in the present embodiment, the lower ends of the ribs 323 are supported on the slag discharge guide 324 .

[0089] The slag discharge guide 324 is formed in a ring shape below the body 322. The diameter of the slag discharge guide 324 may be formed to be slightly larger than the diameter of the body 322, and the lower end of the rib 323 radially protruding from the body 322 may be formed to be supported on the slag discharge guide 324.

[0090] An outer side surface having a predetermined upper and lower length may be formed on the outer side of the slag discharge guide 324, and a radially protruding protrusion 325 may be formed on the outer side of the slag discharge guide 324. As described later, in the case of combining the first module 310 and the second module 320, the slag discharge guide 324 forms the lower end of the separation screw 300. During the juice extraction process, the protrusion 325 pushes or stirs the residue moved to the lower side of the separation screw 300, and guides the residue to be discharged smoothly together with the protrusion 327 described later.

[0091] When residues are stagnant at the lower side of the separation screw 300 , the separation screw 300 is subjected to an excessive load, which may reduce the juice extraction efficiency and may generate noise and vibration. However, in the present invention, the residues can be further effectively discharged through the protrusion 325 .

[0092] The protrusion 325 may be formed in a plurality along the circumferential direction of the outer side surface of the slag discharge guide 324 and may be formed to be inclined up and down along the rotation direction of the separation screw 300. In addition, the protrusion 325 may be formed to extend from the screw thread 313 of the second module 320.

[0093] A plurality of protrusions 327 may be formed along the circumferential direction at the lower end of the protrusion 325 extending in a spiral form. The protrusion 327 may also be formed additionally, rather than being formed to extend from the protrusion 325. As shown in the figure, the protrusion 327 has a substantially inverted triangular shape, and may be formed as an inclined surface on one side of the circumferential direction side of the separation screw 300. The lower end of the slag discharge guide 324 is formed to be inclined inwardly in a manner that the radius becomes smaller as it approaches the lower side, so the protrusion 327 may be formed in a form in which the protrusion height becomes relatively larger as it approaches the lower side. Since the lower end of the slag discharge guide 324 is formed to be inclined inwardly, a larger space for accumulating residues can be ensured on the lower side of the slag discharge guide 324 compared to the upper side. At this time, the protrusion 327 performs the function of sweeping the residue accumulated in the space downward.

[0094] like Figure 6As shown, a sweep rib 328 protruding radially inward and long in the vertical direction is formed on the inner side of the second module 320, which is used to perform the function of stirring the juice inside the separation screw 300. At this time, as shown in the figure, the lower end of the sweep rib 328 is also formed to protrude toward the bottom plate surface of the juice extraction cylinder 400, so that the precipitation of the juice can be prevented and the fresh taste can be maintained. The radial outer side of the lower end of the sweep rib 328 can be separated from the inner side of the second module 320. At this time, the juice can flow through the separated space, so that while the juice is stirred by the sweep rib 328, the resistance effect of the juice when the separation screw 300 rotates can be minimized.

[0095] The first module 310 and the second module 320 can be detachably combined, and when combined, the ribs 323 of the second module 320 are inserted into the slits 314 of the first module 310 .

[0096] In the separation screw 300 of the present invention, since the width of the rib 323 is slightly smaller than the width of the slit 314, a gap is formed between the rib 323 and the slit 314 when the first module 310 and the second module 320 are combined. In the present invention, since a slag discharge guide 324 having a predetermined upper and lower thickness is formed at the lower portion of the second module 320, the gap formed by the combination of the slit 314 and the rib 323 is not a shape extending to the lower end of the separation screw 300, but may have a shape extending only to the upper end of the slag discharge guide 324.

[0097] When the separation screw 300 rotates, the juice of the juicing object generated between the outer side surface of the separation screw 300 and the juice extraction cylinder 400 can move into the interior of the separation screw 300 through the gap, thereby being spatially separated from the residue. That is, the separation screw 300 can play a role in squeezing and crushing the juicing object through interaction with the juice extraction cylinder 400, and at the same time, play a role in separating the juice and the residue, so that the mesh cylinder arranged between the juice extraction cylinder 400 and the screw 300 in the past for separating the juice and the residue can be omitted.

[0098] Furthermore, although the gap formed between the baffle 315 and the rib 323 is narrow when the first module 310 and the second module 320 of the separation screw 300 are combined, when the first module 310 and the second module 320 are separated, the interval between the baffle 315 of the first module 310 and the interval between the rib 323 of the second module 320 are wide enough, thereby facilitating the cleaning of the separation screw 300.

[0099] When the first module 310 and the second module 320 are combined, the diameter of the slag discharge guide portion 324 is almost the same as the diameter of the main body 312 of the first module 310, so that the outer side surface can be formed into an integral shape, but the diameter of the slag discharge guide portion 324 can also be formed to be slightly larger than the diameter of the main body 312 of the first module 310, thereby forming a smaller step on the upper surface of the slag discharge guide portion 324.

[0100] One or more spiral screw threads 313 may be formed on an outer surface of at least one of the first module 310 and the second module 320 .

[0101] The screw thread 313 forms a concave-convex surface on the outer side of the separation screw 300, so that when the separation screw 300 rotates, the crushing, squeezing and filtering process of the juicing object can be more effectively carried out between the separation screw 300 and the juice extraction cylinder 400, and the juicing object can be moved more smoothly to the lower end of the juicing cylinder 400.

[0102] The screw thread 313 is preferably formed on the outer side surfaces of the first module 310 and the second module 320 (more specifically, the outer side surfaces of the ribs 323). When the first module 310 and the second module 320 are combined, the screw thread 313 can be formed into a continuous shape on the outer side surfaces of the first module 310 and the second module 320.

[0103] At this time, preferably, the protrusion 325 of the slag discharge guide 324 protrudes further in the radial direction than the screw thread 313 formed at the lower end of the separation screw 300 .

[0104] The screw 300 may be provided with a contact portion 316 protruding upwardly from the upper portion of the screw body. Figure 7 As shown in the figure, the contact portion 316 may be formed in a shape that extends horizontally at a predetermined thickness on the upper end of the screw body and then protrudes upward. In this case, the portion protruding upward may be formed with an inclined surface 317 formed on one side, and may be formed in a shape in which the cross-sectional area decreases toward the upper part. The lower surface of the contact portion may be formed in a curved surface. In this case, the shape of the contact portion 316 is not limited to the shape shown in the figure, and may be deformed into various shapes.

[0105] As shown in the figure, the upper end of the contact portion 316 can be formed to have a predetermined horizontal surface. In this case, the height of the upper end surface of the contact portion 316 is formed to be higher than the height of the upper end blade 313a of the screw. The upper end surface of the contact portion 316 can be located at the through hole 121 (at the outer side of the bottom plate of the hopper 100) Fig. 9 and Fig.12 Directly below the lower end of the

[0106] The juice material pre-cut in the hopper 100 can be transferred to the screw 300 below the hopper 100 through the through hole 121, but the juice material may be stuck in the through hole 121 and cannot be transferred downward. In particular, as described later, in the present invention, the discharge portion 120 formed on the bottom plate surface of the hopper 100 is three-dimensionally formed, so the through hole 121 has a predetermined upper and lower height space. Therefore, the juice material may be easily stuck in the predetermined height space and cannot be transferred downward.

[0107] The blade 313a at the upper end of the screw is arranged slightly below the lower end of the through hole 121 on the outer side of the bottom plate of the hopper 100 and is separated from the through hole 121, and forms a horizontal blade, so it is not easy to touch the juice material stuck in the through hole 121. However, in the present invention, a touch portion 316 protruding upwardly from the upper part of the screw body is formed, and the touch portion 316 can touch the lower end of the juice material in the through hole 121 and push it up or break it, thereby solving the problem that the juice material is stuck in the through hole 121 and cannot be moved downward.

[0108] When the contact portion 316 is formed on the screw 300, it is preferably designed so that the center of gravity of the contact portion 316 and the center of gravity of the blade 313a at the upper end of the screw are symmetrical to each other. This is because if the center of gravity of the screw 300 is not at the rotation center of the screw 300 but is eccentric to the left or right, vibration may occur when the screw 300 rotates.

[0109] Although not shown in the figure, the contact part 316 may be formed in plurality. When forming a plurality of contact parts 316, the contact part 316 is also preferably designed so that the entire center of gravity of the screw 300 is located at the rotation center. Therefore, when the screw upper end blade 313a is omitted and a plurality of contact parts 316 are formed, it is preferred that the plurality of contact parts 316 be designed so that they are symmetrical in the circumferential direction.

[0110] When the radial width and length of the upper end surface of the contact portion 316 are too small, the contact portion 316 can only touch the juice material stuck in a narrow area at the lower end of the through hole 121 when rotating. In addition, when the radial width and length of the upper end surface of the contact portion 316 are too long, the contact portion 316 is large in size but weak in strength, which may cause the risk of damage. Therefore, the radial width and length of the upper end surface of the contact portion 316 are preferably formed to be neither too large nor too small compared with the radial width and length of the through hole 121 to the extent that it can touch a predetermined radial area of ​​the through hole 121. In addition, the upper end surface of the contact portion 316 is preferably formed to pass through the radial center of the through hole 121.

[0111] like Fig. 9 , Fig.13 and Fig.14As shown, the center of the outer side surface of the bottom plate of the hopper 100 may be formed to protrude more than the peripheral portion, so as to guide the upper end of the screw body. At this time, an inclined surface 136 may be formed radially from the center of the outer side surface of the bottom plate of the hopper 100 toward the through hole 121. An inclined surface 317 may be formed on the inner side surface of the upper end of the contact portion 316, and the inclined surface 317 may be guided along the inclined surface 136 when the screw 300 rotates.

[0112] The screw 300 formed with the touching portion 316 can be applied not only to the juicer including the hopper 100 shown in the figure, but also to a juicer having the following structure: the juicer has an inlet for inserting juicing materials formed at the upper part of the screw 300, the juicing materials are stuck in the inlet and are not easily moved downward, and the screw upper end blade 313a at the upper end of the screw body cannot effectively touch the juicing materials stuck in the inlet.

[0113] Next, refer to Figures 10 to 18 , the hopper 100 of the present invention is described.

[0114] Fig.10 This is a three-dimensional cutaway view of the interior of the hopper. Fig.11 This is a three-dimensional diagram showing the inner side of the bottom plate of the hopper. Fig.12 This is a top view showing the inner side of the bottom plate of the hopper. Fig.13 This is a three-dimensional diagram showing the outer side of the bottom plate of the hopper. Fig.14 This is a bottom view showing the outer side of the bottom plate of the hopper. Fig.15 This is a three-dimensional diagram of the cutting section. Fig.16 and Fig.17 yes Fig.15 A side view of the cutting portion, Fig.18 It is a three-dimensional diagram showing the bottom surface of the cutting portion.

[0115] The hopper 100 is detachably coupled to the upper portion of the juice extracting barrel 400. The hopper 100 forms a space for storing the inserted juice extracting materials (e.g., fruits, vegetables, and grains, etc.). The cutting portion 200 rotatably fixed on the bottom plate surface of the hopper 100 cuts and stirs the juice extracting materials by rotating, and supplies them to the juice extracting barrel 400 below. In the present embodiment, the cutting portion 200 receives power from the screw 300 and rotates, and cuts and stirs the juice extracting materials and supplies them to the juice extracting barrel 400 below. Therefore, the present invention cuts the juice extracting materials in the hopper 100, and there is no need to pre-cut the juice extracting materials before inserting.

[0116] The hopper 100 can be divided into two major parts: a hopper housing 110 and a cover 140 . A cutting part 200 can be installed inside the hopper 100 . Therefore, the hopper 100 may also include the cutting part 200 .

[0117] The hopper housing 110 has a cylindrical or conical shape, and forms a space for receiving the juicing material through an open upper portion.

[0118] The bottom plate surface of the hopper housing 110 and the cylindrical main body above are formed to be separable, but the present invention is not necessarily limited thereto, and the two may be formed integrally.

[0119] A cutting unit 200 may be rotatably mounted on the bottom surface of the hopper housing 110 . The cutting unit 200 may receive power from the screw 300 inside the juice extraction cylinder 400 and rotate together with the screw 300 .

[0120] On the inner side of the hopper housing 110, a comb pattern protrusion 111 protruding inwardly may be formed along the circumferential direction, and the comb pattern protrusion 111 extends in the length direction. This is to prevent the light juicing material such as leafy vegetables from absorbing water and sticking to the inner side of the hopper housing 110, and to facilitate the peeling of the juicing material. In this case, the comb pattern protrusion 111 is preferably formed on the entire inner side of the hopper housing 110.

[0121] A handle 112 for a user to hold the container may be formed on one side of an outer circumferential surface of the hopper housing 110 .

[0122] A predetermined number of mating protrusions 113 are formed along the outer periphery of the outer edge of the lower end of the hopper housing 110 and are formed to protrude long in the horizontal direction. The mating protrusions 113 are combined with the coupling protrusions 410 (at the inner edge of the upper part of the juice extractor 400) to form a plurality of mating protrusions 113. Figure 4 The juice extracting cylinder 400 and the hopper 100 are detachably combined together (as shown in FIG. 2 ). The two components 100 and 400 can be combined by inserting the mating protrusion 113 through the spaced apart space between the combining protrusions 410 and rotating the mating protrusion 113 so that the mating protrusion 113 is located below the combining protrusion 410 .

[0123] like Fig.13 As shown, a sealing ring 114 formed in a circular ring shape can be fixed above the matching protrusion 113 on the outer edge of the lower end of the hopper housing 110. When the hopper 100 is combined on the top of the juice extraction cylinder 400, the sealing ring 114 plays a role in sealing between the two components 100, 400.

[0124] The cover 140 is hinged to the upper end of the hopper housing 110, and the cover 140 can open and close the open upper part of the hopper housing 110. An additional inlet 142 as a through hole may be formed in the center of the cover 140. When it is necessary to further put in a relatively small size of juice material during the juice extraction process, the juice material can be supplied to the inside of the hopper 100 through the additional inlet 142. In addition, a push rod (not shown) can be inserted through the additional inlet 142 and force can be applied to move the juice material inside the hopper 100 to the lower part inside the hopper 100. Although not shown, an additional cover for blocking the additional inlet 142 may also be formed.

[0125] A through connection hole 115 is formed at the center of the bottom surface of the hopper housing 110. The upper rotation shaft 311 of the screw 300 located below the hopper 100 and the cutting unit 200 located above the bottom surface of the hopper 100 can be connected through the connection hole 115 in a power-transmitting manner.

[0126] The cutting portion 200 is rotatably coupled to the inner bottom surface of the hopper 100, and receives a rotational force from the screw 300 located inside the juicer barrel 400 to rotate inside the hopper 100, and after cutting and stirring the juice material put into the hopper 100, the cut juice material is supplied to the interior of the juicer barrel 400 located below the hopper 100 through the discharge portion 120 formed on the bottom plate of the hopper 100.

[0127] Although the cutting part 200 can receive the power of the screw 300 by directly coupling to the upper rotating shaft 311 of the screw 300, a rotatable power transmission part 116 can also be formed on the connecting hole 115, and the upper rotating shaft 311 of the screw 300 and the bottom surface of the cutting part 200 are respectively coupled to the power transmission part 116, and the rotational force of the screw 300 is transmitted to the cutting part 200 through the power transmission part 116.

[0128] In the present invention, the cutting unit 200 does not rotate and cut the juice material in a state where both sides of the cutting unit 200 are supported between the lower end and the upper end of the hopper 100, but only cuts the juice material in a state where one side of the cutting unit 200 is supported on the lower end of the hopper 100, so that a wide open space that is not disturbed is formed on the upper side of the cutting unit 200 in the hopper 100. Therefore, the upper side of the entire cutting unit 200 forms an open space, so that large-sized juice material such as a whole fruit can be put into the hopper 100 and cut.

[0129] The cutting part 200 may be configured to include a splitting blade 210 and a cutting blade 220. The splitting blade 210 and the cutting blade 220 may rotate at the same speed. At this time, the splitting blade 210 and the cutting blade 220 may be integrally formed, so that the splitting blade 210 and the cutting blade 220 rotate together at the same speed.

[0130] The chopping blade 210 is formed to extend upward in a spiral shape along the rotation direction of the cutting part 200 at the rotation center. The upper end of the chopping blade 210 is preferably formed into a hook shape with a smaller cross section toward the end and a sharp point. In addition, the chopping blade 210 is not formed into a plate shape, but is formed to have a predetermined wall thickness, and the cross section becomes smaller toward the upper side and extends upward while being curved in a spiral shape, so as to be formed into a shape like a bull's horn.

[0131] The hook-shaped chopping blade 210 facing upward is mainly responsible for splitting and crushing the juice material put into the upper part. In addition, since the chopping blade 210 is not formed in a plate shape but is formed in a shape with a predetermined wall thickness, it is possible to prevent stem vegetables such as water celery from being entangled in the chopping blade 210. In addition, the shape extending in a horn-like spiral plays a role in guiding the cut juice material to move downward. At this time, an inclined curved surface 211 is formed on the radial inner side surface of the chopping blade 210. The inclined curved surface 211 is more downward and radially outward, so that the juice material crushed by the chopping blade 210 can move smoothly downward along the curved surface while the chopping blade 210 rotates.

[0132] The higher the upper end height of the splitting blade 210 is, the higher the crushing effect is, so it is preferably formed to be at least higher than the height of the upper end surface of the cutting blade 220. In addition, the radial length of the splitting blade 210 is preferably formed to be as long as possible in the radial direction within a range that does not interfere with the inner side surface of the hopper 100.

[0133] The cutting blade 220 is formed to extend in the horizontal direction on the bottom plate surface of the hopper 100. The cutting blade 220 is preferably formed to have a predetermined thickness in the vertical direction. Fig.17 As shown, a blade may be formed on the upper end where the inclined surfaces of the front and back sides of the cutting blade 220 in the rotation direction meet. At this time, the end of the cutting blade 220 may be formed so that its height gradually decreases as it approaches the radial direction. The cutting blade 220 plays a role of secondary crushing the juice material that is crushed by the splitting blade 210 and moves downward by the blade formed at the upper end. At the same time, as the cutting blade 220 is formed to have a predetermined thickness, it can push the juice material located on the bottom plate surface of the hopper 100 to be discharged smoothly through the discharge part 120. This is because if the thickness of the cutting blade 220 is thin, it may fail to push the juice material located on the bottom plate surface of the hopper 100 and may run idle.

[0134] The cutting blade 220 preferably extends in a direction 180 degrees opposite to the direction in which the splitting blade 210 extends at the rotation center of the cutting part 200, but is not necessarily limited thereto.

[0135] Therefore, in the present invention, the splitting blade 210 and the cutting blade 220 are located in opposite directions on the rotation center, and the blade tips of the splitting blade 210 and the cutting blade 220 are bent toward each other, so that the overall shape of the cutting portion 200 is similar to a crescent shape.

[0136] In addition, the splitting blade 210 and the cutting blade 220 are not located on the same plane, and the splitting blade 210 has a shape that is curved in a spiral shape and extends upward, so the overall shape of the cutting portion 200 is similar to a crescent shape, but has a shape that is twisted in space.

[0137] Similar to the splitting blade 210 , the cutting blade 220 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 100 .

[0138] A circular protrusion 221 protruding in the form of a ring may be formed on the bottom surface of the cutting portion 200. Fig.12 As shown in the enlarged view of FIG, a circular groove 130, which is a circular groove into which the circular protrusion 221 is inserted, may be formed on the bottom plate surface of the hopper 100 corresponding to the circular protrusion 221. Therefore, the cutting unit 200 rotates in a state where the circular protrusion 221 is inserted into the circular groove 130, thereby preventing the residue in the hopper 100 from flowing into the rotating shaft of the cutting unit 200. Furthermore, the problem of long vegetables such as stem vegetables or fiber being entangled in the rotating shaft of the cutting unit 200 can be solved.

[0139] In this embodiment, although the concave-convex structure in which a circular protrusion 221 is formed on the bottom surface of the cutting portion 200 and a circular groove 130 is formed on the bottom plate surface of the hopper 100 is used as an example for explanation, conversely, a concave-convex structure in which a circular groove is formed on the bottom surface of the cutting portion 200 and a circular protrusion is formed on the bottom plate surface of the hopper 100 may also be formed.

[0140] At this time, a slag discharge part 131 may be formed on the circular groove 130 on the bottom surface of the hopper 100, which is connected to the circular groove 130 and is used to discharge the residue sandwiched in the circular groove 130 to the outside of the circular groove 130. Fig.12 As shown in the enlarged view of FIG. 1 , the slag discharge portion 131 can be formed by making a part of the circular groove 130 at a predetermined position of the circular groove 130 further depressed downward to connect with the space in the hopper 100 outside the circular groove 130 or by making one side of the outer side surface of the circular groove 130 open. Therefore, the residue sandwiched in the circular groove 130 can be pushed along with the rotation of the cutting unit 200 and directly discharged through the slag discharge portion 131. At this time, the slag discharge portion 131 is preferably formed on one side of the stagnation portion 128 described later so that the discharged residue can be discharged to the stagnation portion 128.

[0141] The structure of the hopper 100 is described as follows. At least one first inner protrusion 117a that interacts with the chopping blade 210 may be formed on the inner side surface of the hopper 100. The first inner protrusion 117a may be formed on the inner side surface of the hopper 100 to protrude long in the vertical direction. The first inner protrusion 117a interacts with the chopping blade 210, and the first inner protrusion 117a plays a role in clamping and retaining the juice material put into the hopper 100, thereby improving the crushing efficiency based on the chopping blade 210. If there is no first inner protrusion 117a, the juice material may rotate together with the chopping blade 210 and not be cut. However, when the chopping blade 210 is rotated in a state where the juice material is supported in the rotation direction by the first inner protrusion 117a, the juice material can be easily crushed. Therefore, the first inner protrusion 117a is preferably formed to have a relatively greater height protruding inward than the second inner protrusion 117b described later so as to support the juice extracting material in the radial direction.

[0142] At this time, the lower end of the first inner protrusion 117a is preferably located above and spaced from the upper end of the chopping blade 210. A through groove 118 penetrating both sides may be formed on the lower end of the first inner protrusion 117a. At this time, the through groove 118 provides a space so that the material crushed by the first inner protrusion 117a and the chopping blade 210 can be discharged smoothly in the circumferential direction. When a hard vegetable or fruit such as a carrot is caught in the first inner protrusion 117a, it causes a large load. At this time, the space ensured by the through groove 118 allows the material crushed by the first inner protrusion 117a and the chopping blade 210 to be discharged smoothly.

[0143] A through hole 121 of the discharge portion 120 may be formed vertically below the first inner protrusion 117a. Fig.10 As shown, the first inner protrusion 117a may be arranged above the first expansion portion 122 described later. Therefore, the juice material cut and separated by the first inner protrusion 117a may fall vertically downward and directly flow into the interior of the juice extraction cylinder 400 through the through hole 121.

[0144] In addition, at least one second inner protrusion 117b may be formed on the inner side of the hopper 100 to interact with the cutting blade 220. Fig.10 and Fig.11As shown, a second inner protrusion 117b may be formed on the inner side surface of the hopper 100 at a position corresponding to the rotation position of the end portion of the cutting blade 220 and protruding radially inward. The second inner protrusion 117b interacts with the cutting blade 220 and is used to prevent the juice material from idling together at the upper portion of the cutting blade 220, so that the juice material can flow smoothly into the through hole 121. A part of the juice material located on the bottom plate surface of the hopper 100 is pushed to flow into the through hole 121 as the cutting blade 220 rotates, and the other part gradually moves radially outward. If there is no second inner protrusion 117b, the juice material located at the upper portion of the cutting blade 220 may not flow into the through hole 121 but idly rotate together at the upper portion of the cutting blade 220. At this time, the juice material pushed to the outer side of the upper portion of the cutting blade 220 by the centrifugal force may collide with the second inner protrusion 117b and fall from the cutting blade 220. The second inner protrusion 117 b may also be formed radially outward of the first expansion portion 122 below the first inner protrusion 117 a so that the juice extracting material that collides with the second inner protrusion 117 b and falls can easily flow into the through hole 121 .

[0145] At least one discharge portion 120 may be formed between the center and the edge of the bottom plate surface of the hopper housing 110. The so-called discharge portion 120 in the present invention may be interpreted as including a hole penetrating the bottom plate surface of the hopper housing 110 and a structure around the hole, wherein the structure around the hole enables an appropriate amount of juicing material to move smoothly downward through the hole. The juicing material in the hopper 100 may be cut and stirred by a cutting portion 200 rotatably fixed on the bottom plate surface in the hopper 100, and then supplied to a juicing cylinder 400 arranged below the hopper 100 through the discharge portion 120. In the figure, a discharge portion 120 is formed on one side of the bottom plate surface of the hopper 100, but it is not necessarily limited thereto, and a plurality of discharge portions 120 may also be arranged at intervals.

[0146] The discharge portion 120 may be configured to include a through hole 121 and a stepped portion 124 .

[0147] The through hole 121 is a hole that passes through the bottom plate surface of the hopper 100 from top to bottom. Fig.12 In this case, the radial width may be substantially constant, but the radial width may be gradually increased in the rotation direction of the cutting portion 200. In addition, as described later, the first expansion portion 122 or the second expansion portion 123 may be formed in a manner that the radial width of the through hole 121 is partially increased.

[0148] The radial width of the through hole 121 can be formed to be smaller than the radius of the bottom plate surface of the hopper 100, so as to prevent too much juice material from moving downward at one time and causing a heavy load on the screw 300. As shown in the figure, the radial width of the through hole 121 can be less than half of the radius of the bottom plate surface of the hopper 100.

[0149] However, when the radial width of the through hole 121 is small, the juice material may not be able to move downward and stagnate in the hopper 100. As described later, in the present invention, through the structural features around the through hole 121, even if the size of the through hole 121 is small, an appropriate amount of juice material can be smoothly moved downward.

[0150] like Fig.11 As shown, the step portion 124 is formed on the inner side surface of the bottom plate outside the through hole 121. The step portion 124 may be recessed downward from the inner side surface of the bottom plate to form a step 127 along the rotation direction of the cutting unit 200. The bottom plate surface of the hopper 100 may be divided into an inner side surface inside the hopper 100 and an outer side surface outside the hopper 100. In the following description, they are distinguished as the inner side surface of the bottom plate and the outer side surface of the bottom plate for description.

[0151] When the stepped portion 124 is formed to be recessed downward from the inner side surface of the bottom plate, a step 127 may be formed along the rotation direction of the cutting portion 200. Therefore, when the cutting blade 220 of the cutting portion 200 rotates, the cutting blade 220 may push the juice material on the bottom plate surface, and the juice material is cut into smaller sizes by the cutting blade 220 while being supported on the step 127, and is transferred to the lower side of the hopper 100 through the through hole 121 on one side of the step 127.

[0152] At this time, the step portion 124 may be formed on the radially outer edge of the through hole 121. In addition, the step portion 124 may be formed radially on the edge from the radially outer side of the through hole 121 to the inner side surface of the bottom plate of the hopper 100. Juicing material cut to a size smaller than the radial width of the through hole 121 can easily move downward through the through hole 121, and juicing material cut to a size larger than the radial width of the through hole 121 cannot move downward through the through hole 121, and in a state supported by the upper surface of the step portion 124, after being pushed and moved by the rotation of the cutting blade 220 of the cutting unit 200, it can be cut into a smaller size by the step 127 formed by the step portion 124 and the rear bottom plate surface.

[0153] The upper surface of the step portion 124 may be formed by a combination of a horizontal surface 125 and an inclined surface 126. As shown in the figure, the radial outer side of the upper surface of the step portion 124 may be formed by the horizontal surface 125, and the radial inner side of the upper surface of the step portion 124 may be formed by the inclined surface 126. The inclined surface 126 is inclined downward in a direction opposite to the radial direction and connected to the horizontal surface 125. The inclined surface 126 can allow the juice extraction material located above the inclined surface 126 to move smoothly toward the through hole 121.

[0154] like Fig.12 As shown, a first expansion portion 122 for partially increasing the radial through width of the through hole 121 may be formed at the rear end of the step portion 124 .

[0155] The radial through width of the through hole 121 is partially enlarged by the first expansion portion 122, so that the juice material cut by the step 127 can move smoothly vertically downward. Fig.11 As shown, the thickness of the bottom plate surface behind the first expansion portion 122 can be formed to be thinner, so that the juice material can also move in the horizontal direction and be transferred to the bottom of the hopper 100 through the space formed by the upper surface of the step portion 124 and the rear bottom plate outer side surface 119. Here, the so-called rear refers to the rear side based on the rotation direction of the cutting unit 200.

[0156] In this way, since the step 127 is formed by the step portion 124 and the first expansion portion 122 is formed behind the step portion 124, a relatively large hole can be formed locally in space, so that the juice material cut by the step 127 can be smoothly transferred downward. At this time, the amount of juice material transferred downward per unit time can be controlled by controlling the size of the first expansion portion 122.

[0157] A stagnation portion 128 recessed from the inner side of the bottom plate may be formed radially inwardly of the through hole 121. In this case, the upper surface of the stagnation portion 128 is preferably formed as a horizontal surface. When the upper surface of the stagnation portion 128 is formed as an inclined surface inclined downward toward the through hole 121, the amount of juice material transferred to the bottom of the hopper 100 through the inclined surface increases, which may cause a load on the screw 300.

[0158] At this time, the height of the upper surface of the stagnant portion 128 is preferably formed to be lower than the height of the horizontal surface 125 on the radially outer side of the upper surface of the stepped portion 124. Therefore, a large hole can be formed between the outer side surface 119 of the bottom plate behind the stepped portion 124 and the upper surface of the stagnant portion 128, so that the cut juice extraction material can also be transferred to the lower part of the hopper 100 in the vertical direction or the horizontal direction behind the first expansion portion 122.

[0159] like Fig.12As shown, the stagnation portion 128 may extend forward of the through hole 121 .

[0160] A guide portion 129 may be formed, which extends and protrudes along the tangential direction of the radial inner side surface of the stagnation portion 128, thereby forming a guide surface toward the step 127. The guide portion 129 may guide the juicing material located in front of the step 127 to move toward the step 127, thereby improving the cutting efficiency based on the step 127 and the cutting edge 220.

[0161] The aforementioned slag discharge portion 131 may be formed at one side of the stagnation portion 128 . Therefore, the residue in the circular groove 130 may be transferred to the stagnation portion 128 through the slag discharge portion 131 and transferred to the lower side of the hopper 100 .

[0162] The through hole 121 that penetrates the bottom plate surface of the hopper 100 from top to bottom may also be formed to extend to the rear of the first expansion part 122. In this case, a second expansion part 123 that partially increases the radial penetration width of the through hole 121 may be formed at the rear end of the extended through hole 121. The juice material can also be moved downward through the through hole 121 behind the first expansion part 122, but because the size of the through hole is smaller than the size of the portion where the first expansion part 122 is formed, the larger juice material cannot be moved downward and stagnates, which may cause a bottleneck phenomenon. Therefore, the larger juice material can be moved further downward through the second expansion part 123 independently of the first expansion part 122, thereby reducing the phenomenon of the cut juice material stagnation in the hopper 100.

[0163] As mentioned above, the height of the outer side surface 119 of the bottom plate between the first expansion portion 122 and the second expansion portion 123 is formed to be higher than the height of the upper surface of the step portion 124, so that the cut juice material can be moved in the horizontal direction and transferred to the bottom of the hopper 100 through the space between the upper surface of the step portion 124 and the outer side surface 119 of the bottom plate.

[0164] At this time, the thickness of the bottom plate surface in front of the first expansion part 122 and the second expansion part 123 can be set to be thinner to form a blade. Therefore, by forming the step 127 behind the first expansion part 122 into a relatively sharp blade, the juicing material stuck on the step 127 can be further effectively cut.

[0165] like Fig.13 and Fig.14 As shown, inclined surfaces 135 and 136 may be formed on the outer side of the bottom plate of the hopper 100. Along the rotation direction of the cutting part 200, an inclined surface 135 facing the through hole 121 is formed along the circumferential direction behind the through hole 121, so as to guide the juice material under the through hole 121 to be smoothly supplied to the juice cylinder 400.

[0166] In addition, an inclined surface 136 is formed on the outer side of the bottom plate of the hopper 100 from the center portion along the radial direction toward the through hole 121. The inclined surface 136 can also play a role in smoothly supplying the juice material located below the through hole 121 to the juice cylinder 400, and at the same time plays a role as the side inclined surface 317 of the contact portion 316 of the guide screw 300.

[0167] The scope of the present invention is not limited to the above-mentioned embodiments, and can be implemented by various forms of embodiments within the scope of the attached claims. Within the scope of the spirit of the present invention claimed in the claims, various scopes that can be modified by technicians in the technical field to which the present invention belongs also fall within the scope recorded in the claims of the present invention.

Claims

1. A juicer, comprising a hopper having a space for storing juice material and a cutting unit that pre-cuts the juice material by rotating in the hopper and transfers the pre-cut juice material to a screw below the hopper, wherein: The screw includes a contact portion that protrudes upward above the screw body to contact the juice material stuck in the through hole formed on the bottom plate surface of the hopper.

2. The juice extractor according to claim 1, wherein: The upper end of the contact portion is located below the lower end of the through hole on the bottom plate surface of the hopper.

3. The juice extractor according to claim 1, wherein: The screw further comprises a screw upper end blade, wherein the screw upper end blade is a horizontal blade formed by the screw thread of the screw extending toward the upper end of the screw body. The upper end of the contact portion is located above the blade at the upper end of the screw.

4. The juice extractor according to claim 1, wherein: An inclined surface facing the through hole is formed along the radial direction on the outer side of the bottom plate of the hopper, and An inclined surface corresponding to the inclined surface is formed on the inner side surface of the upper end portion of the contact portion.

5. The juice extractor according to claim 1, wherein: The upper end surface of the contact portion is located at the radial center of the through hole.

6. The juice extractor according to claim 1, wherein: The contact portion is formed in plurality.

7. A screw for a juicer, wherein: The screw includes a contact portion that protrudes upward above the screw body and is used to contact the juice material stuck in an inlet into which the juice material is introduced from above the screw.

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