Juice-extraction drum

Abstract

The present invention relates to a juice-extraction drum. More particularly, the present invention relates to a juice-extraction drum capable of containing one of a first juice-extraction unit and a second juice-extraction unit. The first and second juice-extraction units commonly include a screw configured to rotate by driving power received from a driving shaft, and a juice-extraction drum disposed outside the radius of the screw to compress and pulverize materials in conjunction with the rotation of the screw. The first juice-extraction unit includes a brush for sweeping the outer circumferential surface of the juice-extraction drum. The second juice-extraction unit does not include the brush. A drum housing includes a side surface and a bottom surface to provide a containing space with an open upper side in which the screw and the juice-extraction drum may be contained. A coupling hole is formed on the bottom surface. According to whether the juice-extraction unit contained in the containing space includes a brush or not, one of a power transmission unit for transmitting rotational driving power from the driving shaft to the brush and a stopper unit for sealing the coupling hole is coupled to the coupling hole.

Description

Juicing drum

[0001] The present invention relates to a juicing drum, and more specifically, to a juicing drum that can be used for multiple juicing units having different juicing methods.

[0002] Recently, as interest in health has increased at home, the use of juicers that allow individuals to make and consume juice directly from ingredients such as vegetables, grains, and fruits is on the rise.

[0003] The juicer of Korean Utility Model Publication No. 20-2024-0001869 (Patent Document 1) includes a drive shaft that provides rotational force, a screw connected to the drive shaft that compresses and crushes the object to be juiced by means of a screw spiral formed on a part thereof, a mesh drum that separates the juice and residue of the material crushed by the screw, a brush that sweeps the outer wall of the mesh drum, and an intermediate gear that is fixed to the bottom surface of the drum housing and transmits driving force to the brush while moving in conjunction with the screw. The juicer of Patent Document 1 has the advantage that internal parts can be cleaned well without disassembling the juicer by using a screw and a brush that rotate inside the juicer.

[0004] In addition, the juicer of Korean Utility Model Published No. 20-2022-0002630 (Patent Document 2), which has a different juicing method from Patent Document 1, can be configured such that the screw is separated into a first module and a second module, and when the first module and the second module are combined, the juice extracted between the screw and the drum housing can be moved to an internal juice storage space through the gap between the interlocking sealing plate and the rib. When the first module and the second module are separated, the gap between the sealing plates of the first module and the gap between the ribs of the second module are relatively sufficiently wide, so there is an advantage in that the second screw can be easily cleaned.

[0005] In other words, users can select and use either the juicer of Patent Document 1 or the juicer of Patent Document 2 depending on their juicing preferences or the characteristics of the material to be juiced. However, since this requires purchasing both juicers, the user's cost burden increases.

[0006] Therefore, there is a need to develop a juicer capable of installing a juicing unit that can provide different juicing environments within a single drum housing.

[0007] Therefore, the objective of the present invention is to solve such conventional problems by providing a juicing drum that can be used universally by a plurality of juicing units having different juicing methods.

[0008] In addition, the invention provides a juicing drum that is compatible with a juicing unit that discharges juice to the outside of a filter drum with mesh holes formed on the side and a juicing unit that discharges juice to the inside of a screw.

[0009] The above objective is achieved, according to the present invention, by a juicing drum comprising: a juicing unit comprising a screw that rotates by receiving driving force from a drive shaft of a juicer body and a drum member that accommodates the screw and interacts with the screw to compress and grind materials; a drum housing in the form of a container with an open top that accommodates the juicing unit; and a unit-compatible fastening part disposed at a point on the bottom surface of the drum housing on which the juicing unit is mounted.

[0010] Here, the unit compatible fastening portion preferably includes a connecting portion on which the bottom surface of the drum housing is formed, and a bar-shaped fixing pin whose lower side is insertable or detachable from the connecting portion, and whose upper side protrudes from the bottom surface of the drum housing when the lower side is inserted.

[0011] In addition, the above-described juicing unit preferably comprises a first screw having a plurality of spirals formed on its outer surface and a first gear formed on its lower portion, a filter drum having a cylindrical shape that accommodates the first screw and interacts with the first screw to separate the juice and residue of the crushed and compressed material, and a first juicing unit composed of a brush mounted on the outer surface of the filter drum, which sweeps the outer surface of the filter drum and the inner surface of the drum housing, and a second gear formed on its lower portion.

[0012] In addition, it is preferable that the unit compatible fastening part further includes a power transmission part that is coupled to the upper side of the fixing pin and forms an intermediate gear on the outer surface.

[0013] In addition, it is preferable that the intermediate gear of the power transmission unit is located between the first gear and the second gear so that the brush rotates in conjunction with the first screw when the first screw rotates.

[0014] In addition, it is preferable that the filter drum has a first receiving groove formed in the bottom surface so as to accommodate the power transmission part of the unit compatible fastening part.

[0015] In addition, the above-described juicing unit preferably includes a second juicing unit composed of a first module and a second module, wherein a gap is formed to separate the juice and residue of the material when the first module and the second module are combined, and a grinding drum having a cylindrical shape that accommodates the second screw and interacts with the second screw to grind and compress the material.

[0016] In addition, it is preferable that the grinding drum has a cylindrical shape with the top and bottom open, and includes a barrier formed with a closed side.

[0017] In addition, it is preferable that the unit compatible fastening part further includes an O-ring shaped plug part coupled to the upper side of the fixing pin.

[0018] In addition, it is preferable that the stopper portion is a packing member that prevents juice or residue from leaking out between the fixing pin and the coupling hole or between the fixing pin and the coupling groove.

[0019] In addition, it is preferable that the grinding drum has a second receiving groove formed in the bottom surface, into which the plug portion of the unit compatible fastening part can be received.

[0020] Additionally, the fixing pin further forms a hollow fastening hole in the internal longitudinal direction from the bottom, and the unit compatible fastening part preferably further includes a fixing screw that is fastened to the fastening hole at the bottom of the drum housing when the fixing pin is inserted into the coupling hole of the drum housing.

[0021] In addition, it is preferable that the juice separated by the filter drum moves to the juice discharge pipe through the juice discharge port formed on the bottom surface of the drum housing.

[0022] In addition, the second screw forms a juice storage space inside, and the juice of the crushed material is transferred to the juice storage space through the gap, and the transferred juice is preferably moved to the juice discharge pipe through the juice discharge port formed on the bottom surface of the drum housing.

[0023] According to the present invention, by providing a juicing drum that can be used interchangeably with a plurality of juicing units having different juicing methods, there is an effect of enabling the interchangeable use of various juicing units depending on the user's convenience or the juicing material.

[0024] In addition, by providing a juicing drum that is compatible with a juicing unit that discharges juice to the outside of the juicing drum and a juicing unit that discharges juice to the inside of the screw, the utility of the juicing drum can be greatly improved.

[0025] FIG. 1 is a perspective view showing a state in which a first juicing unit is coupled to a juicing drum of the present invention.

[0026] FIG. 2 is an exploded perspective view of FIG. 1,

[0027] FIG. 3 is a bottom perspective view of the filter drum shown in FIG. 2,

[0028] FIG. 4 is a perspective view showing the state in which a second juicing unit is coupled to the juicing drum of the present invention.

[0029] FIG. 5 is an exploded perspective view of FIG. 4.

[0030] FIG. 6 is a bottom perspective view of the crushing drum shown in FIG. 5,

[0031] FIG. 7 is a plan cross-sectional view of FIG. 1,

[0032] FIG. 8 is a cross-sectional view along line A-A' of FIG. 7,

[0033] FIG. 9 is an enlarged cross-sectional view of part "a" of FIG. 8,

[0034] FIG. 10 is a cross-sectional view along line B-B' of FIG. 7,

[0035] FIG. 11 is a cross-sectional view of FIG. 4,

[0036] FIG. 12 is a cross-sectional view along line C-C' of FIG. 11,

[0037] FIG. 13 is an enlarged cross-sectional view of part "b" of FIG. 12, and

[0038] FIG. 14 is a cross-sectional view along line D-D' of FIG. 11, and

[0039] Figure 15 is a cross-sectional view along the E-E' line of Figure 12.

[0040] Preferred embodiments of the present invention will be described below based on the attached drawings. The disclosure of this specification is intended to provide a detailed description sufficient for a person skilled in the art to easily practice the present invention, and thereby does not imply that the technical scope and concept of the present invention are limited to the embodiments disclosed in this specification or the descriptions thereof.

[0041] Furthermore, since each component shown in the drawings is depicted arbitrarily for the sake of convenience of explanation, the present invention is not necessarily limited to what is shown in the drawings, and the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. Accordingly, terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intent or convention of the user or operator, and the definitions of such terms should be based on the content throughout this specification.

[0042] In this specification, unless specifically stated otherwise, terms such as 'upper side', 'upper part', 'upper end', or similar terms refer to the side or section or section near where the material is introduced, and terms such as 'lower side', 'lower part', 'lower end', or similar terms refer to the side opposite to where the material is introduced, or the section or section near therefrom.

[0043] FIG. 1 is a perspective view showing a state in which a first juicing unit is coupled to a juicing drum of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a bottom perspective view of a filter drum shown in FIG. 2, FIG. 4 is a perspective view showing a state in which a second juicing unit is coupled to a juicing drum of the present invention, FIG. 5 is an exploded perspective view of FIG. 4, and FIG. 6 is a bottom perspective view of a grinding drum shown in FIG. 5.

[0044] The juicing drum (100) of the present invention, as illustrated in the drawing above, includes a juicing unit, a drum housing (110), and a unit compatible fastening part (140).

[0045] The juicing unit can be selected as either a first juicing unit (200) or a second juicing unit (300) with a different operating method.

[0046] The first juicing unit (200) includes a first screw (210) that rotates by receiving power from a drive shaft, a filter drum (220) and a brush (230) arranged to surround the outer radius of the first screw (210). The first screw (210), filter drum (220), and brush (230) may be configured in the same form as the screw, mesh drum, and rotating brush described in Utility Model 20-2024-0001869.

[0047] That is, the filter drum (220) includes a mesh body (221) formed with a plurality of mesh holes that can move the juice extracted from the material compressed and crushed between the first screw (210) and the filter drum (220) to a radius-outer area of ​​the filter drum (220).

[0048] The juice extracted inside the filter drum (220) is discharged outside the filter drum (220) through the mesh (221). Additionally, the residue separated from the juice during the extraction process is pushed downward inside the filter drum (220) and discharged outside the filter drum (220) through the residue discharge hole formed at the bottom of the filter drum (220).

[0049] The brush (230) rotates between the drum housing (110) and the filter drum (220) and continuously sweeps the inner surface of the side wall of the drum housing (110) and the outer surface of the filter drum (220). Thus, the extraction efficiency can be improved by continuously removing juice or residue that has adhered to the mesh (221) of the filter drum (220) and the outer surface of the filter drum (220).

[0050] Additionally, since the brush (230) is configured to continuously sweep the inner surface of the side wall of the drum housing (110), if at least a portion of the side wall of the drum housing (110) is formed of a transparent material, the amount of juice stored in the drum housing (110) can be easily checked.

[0051] The second juicing unit (300) includes a second screw (310) that rotates by receiving power from a drive shaft, and a grinding drum (320) arranged to surround the outer radius of the second screw (310).

[0052] The second screw (310) is configured to be separated into a first module (310a) and a second module (310b), as described in Utility Model 20-2021-0001067, and can be configured in a form that allows the juice extracted between the second screw (310) and the crushing drum (320) to be moved to an internal juice storage space (314) through the gap between the blocking plate (312) and the rib (313) that interlock when the first module (310a) and the second module (310b) are combined, and a second rotating shaft (311) is formed at the bottom to be coupled with the drive shaft of the juicer body.

[0053] The crushing drum (320) may be formed in a funnel shape that surrounds the outer side of the screw, with crushing ribs and compression ribs formed on the inner side, as in the mesh drum of published utility model 20-2024-0001869, and may be configured to include a barrier (321) that can block the passage of juice instead of the mesh of the mesh drum.

[0054] When the second screw (310) rotates by receiving rotational power from the main body of the juicer, the juice of the extracted material generated between the outer surface of the second screw (310) and the grinding drum (320) moves to the internal juice storage space (314) through the gap formed on the outer surface of the second screw (310), thereby being spatially separated from the residue. That is, the second screw (310) plays the role of compressing and grinding the extracted material through interaction with the grinding drum (320), while simultaneously playing the role of separating the juice from the residue.

[0055] When the first module (310a) and the second module (310b) are combined, the gap formed between the sealing plate (312) and the rib (313) is narrow, but when the first module (310a) and the second module (310b) are separated, the gap between the sealing plate (312) of the first module (310a) and the gap between the rib (313) of the second module (310b) is relatively sufficiently wide, so cleaning of the second screw (310) is easy.

[0056] The juice material that is compressed and crushed between the second screw (310) and the crushing drum (320) is not discharged to the outside of the crushing drum (320) by the barrier (321) of the crushing drum (320), but moves toward the juice storage space (314) inside the second screw (310) through a gap formed on the outer surface of the second screw (310). In addition, the residue separated from the juice during the juicing process moves downward between the second screw (310) and the crushing drum (320) and moves to the residue discharge hole formed at the bottom of the crushing drum (320).

[0057] The drum housing (110) has a container shape in which the overall shape consists of a side and a bottom surface, providing a receiving space with an open top, and separates juice and residue and discharges them to the outside. The drum housing (110) is attached to the top of the main body of the juicer, and the internal receiving space can accommodate a first juicing unit (200) or a second juicing unit (300), and a hopper can be attached to the top.

[0058] A waterproof cylinder (111) with a through hole (112) is formed protruding upward in the center of the bottom surface of the drum housing (110), and the first rotation shaft (211) of the first screw (210) or the second rotation shaft (311) of the second screw (310) can be inserted through the through hole (112) and coupled to the drive shaft of the juicer body. The waterproof cylinder (111) is formed protruding upward to prevent juice from leaking out of the drum housing (110) through the through hole (112).

[0059] On the outer side of the lower part of the drum housing (110), a juice discharge pipe (114c) for discharging juice and a waste discharge pipe (115b) for discharging waste may be formed in the shape of pipes protruding at positions spaced apart from each other.

[0060] A juice outlet (114a) communicating with a juice discharge pipe (114c) is formed on the bottom surface of the drum housing (110). The juice outlet (114a) is formed across a part of the first region (a1 in FIG. 8) corresponding to the outer radius of the filter drum (220) of the first juicing unit (200) and a part of the second region (a2 in FIG. 12) corresponding to the juice storage space (314) inside the second screw (310) of the second juicing unit (300).

[0061] A waste discharge port (115a) is formed in part of the third area (a3 in FIG. 10) corresponding to the bottom of the filter drum (220) of the first juicing unit (200), between the first area (a1) and the second area (a2) of the bottom surface of the drum housing (110), which communicates with the waste discharge pipe (115b).

[0062] That is, the first region (a1), the second region (a2), and the third region (a3) ​​may be composed of ring-shaped regions having different diameters, and the second region (a2), the third region (a3), and the first region (a1) may be arranged sequentially outwardly in a radial direction from the center of the drum housing (110).

[0063] In addition, a juice discharge cap (114d) is formed at the outer end of the juice discharge pipe (114c), so that the juice can be discharged to the outside or stored inside the drum housing (110) depending on the opening and closing operation of the juice discharge cap (114d).

[0064] Additionally, at the lower part of the waste discharge port (115a), an elastic packing member (115c) having one end fixed and the other end free may be disposed. The packing member (115c) is elastically deformed by the waste discharge pressure to open the waste discharge port (115a) and can provide resistance to waste discharge.

[0065] In the receiving space of the drum housing (110), either one of the first juicing unit (200) and the second juicing unit (300), which have different juicing methods, can be installed, and the juicing method can be changed according to the user's preference or the characteristics of the material to be juiced.

[0066] That is, when the first juicing unit (200) is installed in the drum housing (110), the juice discharged outside the mesh (221) of the filter drum (220) of the first juicing unit (200) moves to the juice discharge pipe (114c) through the juice discharge port (114a) of the drum housing (110), and the residue discharged through the residue discharge port at the bottom of the filter drum (220) moves to the residue discharge pipe (115b) through the residue discharge port (115a) formed in the third region (a3) ​​of the drum housing (110).

[0067] Additionally, when the second juicing unit (300) is installed in the drum housing (110), the juice that has moved to the juice storage space (314) inside the second screw (310) of the second juicing unit (300) moves to the juice discharge pipe (114c) through the juice discharge port (114a) formed in the second area (a2 in FIG. 12) of the drum housing (110), and the residue discharged through the residue discharge hole at the bottom of the grinding drum (320) moves to the residue discharge pipe (115b) through the residue discharge port (115a) formed in the third area (a3 in FIG. 14) of the drum housing (110).

[0068] That is, the drum housing (110) of the present embodiment has compatibility with the first juicing unit (200) and the second juicing unit (300) so that the juice and residue can be separated and discharged, respectively.

[0069]

[0070] The unit compatible fastening part (140) includes a coupling part (113) formed on the bottom surface of the drum housing (110), a fixing pin (141) coupled to the coupling part (113), and a fixing screw (142) that fixes the fixing pin (141) within the coupling part (114).

[0071] Additionally, the unit compatible connecting part (140) may further include either a power transmission part (120) and a stopper part (130) that can be coupled to the drum housing (110) in response to the selective installation of either the first juicing unit (200) or the second juicing unit (300).

[0072] The connecting part (113) is for connecting the power transmission part (120) or the plug part (130) and is formed at an eccentric position to one side from the center of the bottom surface of the drum housing (110).

[0073] The coupling portion (113) may be formed vertically through a point in the area between the first screw (210) and the brush (230) of the first juicing unit (200), preferably in the area corresponding to the lower end of the filter drum (220). Specifically, the coupling portion (113) may consist of a first coupling hole (113a) located axially above and a second coupling hole (113c) located below the first coupling hole (113a), wherein the first coupling hole (113a) has a relatively larger diameter than the second coupling hole (113c), and an uneven portion (113b) may be formed on one side of the inner surface of the first coupling hole (113a).

[0074] Meanwhile, in this embodiment, the coupling part (113) is described as being formed in the shape of a through hole penetrating the bottom surface of the drum housing (110), but it is not limited thereto, and it is also possible to form it in the shape of a groove recessed from the upper surface of the bottom surface of the drum housing (110).

[0075] The fixing pin (141) is for connecting the power transmission part (120) or the plug part (130), and its lower side can be inserted into or separated from the connecting part (113) inside the drum housing (110), and while the lower side is connected to the connecting part (113), the upper side can be formed in a shape that protrudes from the bottom surface of the drum housing (110).

[0076] Specifically, the fixing pin (141) includes an insertion part (141a) that can be inserted into a first coupling hole (113a) of the drum housing (110), a head part (141b) formed at the top of the insertion part (141a), a groove part (141d) formed by being recessed from one side of the outer surface of the insertion part (141a) and capable of engaging with an uneven part (113b) formed in the first coupling hole (113a), and a fastening hole (141c) formed axially at the bottom of the insertion part (141a).

[0077] The fixing screw (142) is configured to firmly fix the fixing pin (141) to the coupling part (113), and is inserted into the second coupling hole (113b) from the outside of the drum housing (110) and fastened to the lower fastening hole (141c) of the fixing pin (141).

[0078] When installing a first juicing unit (200) in a drum housing (110), a power transmission unit (120) can be installed on a fixing pin (141) that is coupled to a coupling part (113) of the drum housing (110).

[0079] Specifically, the power transmission unit (120) may include an intermediate gear (121) that is axially supported by a fixing pin (141) on the coupling part (113) of the drum housing (110). For power transmission by the intermediate gear (121), a first gear (212) that meshes with the intermediate gear (121) is formed on the lower end of the outer surface of the first screw (210), and a second gear (231) that meshes with the intermediate gear (121) is formed on the lower end of the inner surface of the brush (230). Since the first gear (212), intermediate gear (121), and second gear (231) are configured to transmit power in the same form as the gear train of the screw, gear, and gear train of the brush described in Published Utility Model 20-2024-0001869, a detailed description thereof is omitted.

[0080] The intermediate gear (121) has an insertion hole (122) formed in the center into which the fixing pin (141) can be inserted, and a protruding projection (123) is formed at the bottom of the inner surface of the insertion hole (122) between the head portion (141b) of the fixing pin (141) and the bottom surface.

[0081] The thickness of the protruding jaw portion (123) is set to be relatively small compared to the gap between the bottom surface of the drum housing (110) and the head portion (141b) while the fixing pin (141) is coupled within the first coupling hole (113a). Accordingly, the intermediate gear (121) can be supported in a state where it can rotate axially on the fixing pin (141) while the fixing pin (141) is coupled within the first coupling hole (113).

[0082] Additionally, a ring-shaped first protrusion (113d) is formed protrudingly on the bottom surface of the intermediate gear (121) facing the bottom surface of the drum housing (110), and a ring-shaped second protrusion (121a) that contacts the first protrusion (113d) is formed protrudingly on the upper surface of the bottom surface facing the intermediate gear (121). Accordingly, the intermediate gear (121) is supported on the bottom surface of the drum housing (110) through the contact area between the first protrusion (113d) and the second protrusion (121a), thereby minimizing contact friction between the intermediate gear (121) and the drum housing (110).

[0083] When installing a second juicing unit (300) in a drum housing (110), a stopper (130) for sealing the connecting part (113) can be installed on a fixing pin (141) that is connected to the connecting part (113) of the drum housing (110).

[0084] Specifically, the plug portion (130) may be formed in the shape of a ring-shaped packing member that can be fixed to the coupling portion (113) of the drum housing (110) by a fixing pin (141).

[0085] That is, the fixing pin (141) is inserted into the first coupling hole (113a) on the inside of the drum housing (110) with the plug portion (130) coupled to the insertion portion (141a), and the fixing screw (142) is inserted through the second coupling hole (113c) on the outside of the drum housing (110) and screw-coupled to the fastening hole (141c) of the fixing pin (141). At this time, the plug portion (130), which is made of a ring-shaped packing member, is compressed between the head portion (141b) of the fixing pin (141) and the bottom surface of the drum housing (110) to seal the coupling portion (113). Accordingly, the juice stored inside the drum housing (110) can be prevented from leaking out of the drum housing (110) through the coupling portion (113).

[0086] Meanwhile, the above-mentioned fixing pin (141) is fastened by a fixing screw (142) while the lower end of the insertion part (141a) is supported within the first coupling hole (113a). That is, regardless of the fastening pressure of the fixing screw (142), the gap between the bottom surface of the drum housing (110) and the head part (141b) of the fixing pin (141) can be maintained at a constant level. Therefore, the plug part (130) interposed between the bottom surface of the drum housing (110) and the head part (141b) of the fixing pin (141) can be prevented from being excessively compressed or damaged by the tightening force of the fixing screw (142).

[0087]

[0088] The operation of the first extraction unit (200) installed in the extraction drum (100) of the present invention will be described below.

[0089] FIG. 7 is a plan cross-sectional view of FIG. 1, FIG. 8 is a cross-sectional view along line A-A' of FIG. 7, FIG. 9 is an enlarged cross-sectional view of part "a" of FIG. 8, and FIG. 10 is a cross-sectional view along line B-B' of FIG. 7.

[0090] As shown in the drawing above, a first juicing unit (200) can be coupled to the inner receiving space of the drum housing (110), and a power transmission unit (120) can be coupled to the coupling part (113) formed on the bottom surface of the drum housing (110).

[0091] When the first juicing unit (200) is to be combined with the drum housing (110) for use, prior to combining the first juicing unit (200), the power transmission unit (120) is combined with the coupling part (113) formed on the bottom surface of the drum housing (110) using a fixing pin (141).

[0092] A fixing pin (141) is inserted into the insertion hole (122) of the intermediate gear (121) of the power transmission unit (120), and is supported by being inserted into the first coupling hole (113a) from the inside of the drum housing (110). A fixing screw (142) inserted into the second coupling hole (113c) from the outside of the drum housing (110) is fastened to the fastening hole (141c) of the fixing pin (141), thereby being fixed to the coupling part (113) of the drum housing (110).

[0093] At this time, the fixing pin (141) has a groove (141d) formed on one side of the insertion part (141a) that engages with an uneven part (113b) formed on one side of the first coupling hole (113a) to restrict axial rotation, thereby preventing the fixing pin (141) and the fixing screw (142) from being arbitrarily released by the rotation of the intermediate gear (121).

[0094] Additionally, when the central insertion hole (122) of the intermediate gear (121) is inserted into the insertion part (141a) of the fixing pin (141), the protruding projection (123) protruding from the lower inner surface of the insertion hole (122) is positioned between the head part (141b) of the fixing pin (141) and the bottom surface of the drum housing (110). The thickness of this protruding projection (123) is set to be relatively small compared to the gap between the head part (141b) of the fixing pin (141) and the bottom surface of the drum housing (110). Therefore, during the process of firmly fastening the fixing pin (141) and the fixing screw (142), it is possible to prevent the intermediate gear (121) from being stuck between the head part (141b) and the drum housing (110) due to the fastening pressure of the fixing screw (142).

[0095] In addition, a first raised portion (113d) and a second raised portion (121a) are formed on the mutually facing surfaces of the intermediate gear (121) and the drum housing (110), respectively, and the intermediate gear (121) rotates while the first raised portion (113d) and the second raised portion (121a) are in contact with each other. Therefore, not only is contact friction between the intermediate gear (121) and the drum housing (110) minimized, but the ingress of foreign substances into the juice due to wear on the contact surface can also be minimized.

[0096] After installing the power transmission unit (120) in the coupling part (113) of the drum housing (110) as described above, the first juicing unit (200) is coupled to the receiving space of the drum housing (110).

[0097] Specifically, when a brush (230) is attached to the outer surface of a filter drum (220) and then inserted into the receiving space of a drum housing (110), a second gear (231) formed on the inner surface of the lower part of the brush (230) can be inserted in a position where it meshes with the intermediate gear (121). At this time, since the power transmission unit (120) is located within the first receiving groove (222) formed on the bottom surface of the filter drum (220), the power transmission unit (120), which is positioned in a protruding manner on the upper side of the bottom surface of the drum housing (110), can be prevented from coming into contact with the filter drum (220).

[0098] Next, when the first screw (210) is inserted into the inner side of the filter drum (220) and the first rotation shaft (211) is inserted into the through hole (112) formed in the waterproof cylinder (111) of the drum housing (110), the first gear (212) formed at the lower end of the outer surface of the first screw (210) can be inserted in a position where it meshes with the intermediate gear (121).

[0099] In this manner, when the first gear (212) of the first screw (210), the intermediate gear (121), and the second gear (231) of the brush (230) are engaged with each other, the rotational driving force of the first screw (210) can be transmitted to the brush (230) through the intermediate gear (121) during the process of the first screw (210) rotating by the drive shaft.

[0100] The brush (230), which is positioned to surround the outer side of the filter drum (220), receives rotational driving force through the intermediate gear (121) as described above and rotates while continuously sweeping the inner surface of the side wall of the drum housing (110) and the outer surface of the mesh (221) of the filter drum (220). This prevents the mesh (221) from becoming clogged with debris, thereby inducing smooth discharge of the juice. Additionally, if a part of the side wall of the drum housing (110) is made of a transparent material, the liquid level of the juice stored in the drum housing (110) can be accurately displayed.

[0101] The juice material fed into the boundary between the first screw (210) and the filter drum (220) can be compressed and crushed during the process of being conveyed downward by the rotation of the first screw (210). During this process, the juice extracted can be discharged to the outer radius of the filter drum (220) through the mesh (221) of the filter drum (220). The juice discharged to the outside of the filter drum (220) can be moved to the juice discharge pipe (114c) through the juice discharge port (114a) of the drum housing (110) and discharged to the outside.

[0102] Additionally, as illustrated in FIG. 10, the residue separated from the juice during the juicing process of the material using the first juicing unit (200) is pushed downward inside the filter drum (220), passes through the residue discharge hole formed at the bottom of the filter drum (220), and then moves to the residue discharge pipe (115b) through the residue discharge port (115a) formed in the third region (a3) ​​of the drum housing (110) and can be discharged to the outside.

[0103]

[0104] The operation of the second extraction unit (300) installed in the extraction drum (100) of the present invention will be described below.

[0105] FIG. 11 is a plan cross-sectional view of FIG. 4, FIG. 12 is a cross-sectional view along line C-C' of FIG. 11, FIG. 13 is an enlarged cross-sectional view of part "b" of FIG. 12, FIG. 14 is a cross-sectional view along line D-D' of FIG. 11, and FIG. 15 is a cross-sectional view along line E-E' of FIG. 12.

[0106] As shown in the drawing above, a second juicing unit (300) can be coupled to the inner receiving space of the drum housing (110), and a stopper (130) can be coupled to the coupling part (113) on the bottom surface of the drum housing (110).

[0107] When a second juicing unit (300) is to be combined with the drum housing (110) for use, prior to combining the second juicing unit (300), a stopper (130) is combined with a connecting part (113) formed on the bottom surface of the drum housing (110).

[0108] The plug portion (130) may be made of a ring-shaped packing member and may be fixed to the coupling portion (113) by a fixing pin (141).

[0109] That is, the fixing pin (141) is inserted and supported within the first coupling hole (113a) on the inside of the drum housing (110) with the plug portion (130) coupled to the insertion portion (141a), and the fixing screw (142) is inserted through the second coupling hole (113c) on the outside of the drum housing (110) and screw-coupled to the fastening hole (141c) of the fixing pin (141). At this time, the plug portion (130), which is made of the ring-shaped packing member, is compressed between the head portion (141b) of the fixing pin (141) and the bottom surface of the drum housing (110), so that the coupling portion (113) of the drum housing (110) can be effectively sealed.

[0110] Meanwhile, the above-mentioned fixing pin (141) is fastened by a fixing screw (142) while the lower end of the insertion part (141a) is supported at the lower end of the first coupling hole (113a). That is, thus, the gap between the bottom surface of the drum housing (110) and the head part (141b) of the fixing pin (141) can be maintained at a constant level, thereby preventing the plug part (130) from being excessively compressed or damaged by the tightening force of the fixing screw (142).

[0111] After sealing the joint (113) by installing a stopper (130) on the joint (113) of the drum housing (110) as described above, a second juicing unit (300) is connected to the receiving space of the drum housing (110).

[0112] Specifically, when the grinding drum (320) of the second juicing unit (300) is inserted into the internal receiving space of the drum housing (110), the stopper (130) is positioned within the second receiving groove (322) formed on the bottom surface of the grinding drum (320), thereby preventing contact between the grinding drum (320) and the stopper (130). Next, the first module (310a) and the second module (310b) constituting the second screw (310) are combined and inserted into the inside of the grinding drum (320), and the second rotation axis (311) of the second screw (310) is inserted into the through hole (112) formed in the waterproof cylinder (111) of the drum housing (110).

[0113] The second screw (310) can rotate by receiving power from the drive shaft of the juicer body through the second rotation shaft (311).

[0114] The juice material fed into the boundary between the second screw (310) and the second juice extraction unit (300) can be compressed and crushed during the process of being conveyed downward by the rotation of the second screw (310). During this process, the juice extracted is not discharged to the outside of the second juice extraction drum (320) by the barrier (321) formed on the crushing drum (320), but moves to the juice storage space (314) inside the second screw (310) through the gap formed on the outer surface of the second screw (310). The juice storage space (314) inside the second screw (310) communicates with the juice discharge port (114a) formed in the second region (a2) of the drum housing (110). Accordingly, the juice that has moved to the juice storage space (314) can be moved to the juice discharge pipe (114c) through the juice discharge port (114a) of the drum housing (110) and discharged to the outside.

[0115] At this time, since the above-mentioned juice outlet (114a) is formed across the first area (a1) and the second area (a2), the juice moving to the second area (a2) also moves to the first area (a1) of the drum housing (110), that is, the space between the crushing drum (220) and the side wall of the drum housing (110), and accordingly, the juice stored in the first area (a1) of the drum housing (110) and the juice stored in the second area (a2) reach the same level. That is, if the drum housing (110) is made of a transparent material, it becomes possible to visually check the amount of juice stored inside the drum housing (110) from the outside.

[0116] Meanwhile, as illustrated in FIG. 14, the residue separated from the juice during the juicing process of the material using the second juicing unit (300) is pushed downward inside the crushing drum (320), passes through the residue discharge hole formed at the bottom of the crushing drum (320), and then moves to the residue discharge pipe (115b) through the residue discharge port (115a) formed in the third region (a3) ​​of the drum housing (110) and can be discharged to the outside.

[0117] As described above, the juicing drum (100) of the present embodiment can change the juicing environment by installing either a first juicing unit (200) or a second juicing unit (300), which have different juicing methods, in the drum housing (110), and correspondingly, either a power transmission unit (120) or a stopper unit (130) can be connected to the coupling part (113) of the drum housing (110). Accordingly, while using a single drum housing (110), different juicing environments can be provided by installing either the first juicing unit (200) or the second juicing unit (300) according to the user's preference or the characteristics of the material to be juiced.

[0118]

[0119] The scope of the present invention is not limited to the embodiments described above but may be implemented in various forms of embodiments within the scope of the appended claims. It is deemed that the scope of the claims of the present invention includes various modifications that are possible by anyone with ordinary knowledge in the technical field to which the invention pertains, without departing from the essence of the invention claimed in the claims.

Claims

1. A juicing unit comprising a screw that rotates by receiving driving force from a drive shaft of a juicer body, and a drum member that accommodates the screw and interacts with the screw to compress and grind materials; A drum housing in the form of a container with an open top that accommodates the above-mentioned juicing unit; and A juicing drum comprising a unit-compatible fastening portion disposed at a point on the bottom surface of a drum housing on which the above-mentioned juicing unit is mounted.

2. In Paragraph 1, The above unit compatible fastening part is a coupling part where the bottom surface of the drum housing is formed, and A juicing drum comprising a bar-shaped fixing pin, the lower end of which can be inserted into or separated from the joint, and the upper end of which protrudes from the bottom surface of the drum housing when the lower end is inserted.

3. In Paragraph 2, The above juicing unit is A first screw having a plurality of spirals formed on the outer surface and a first gear formed on the lower part, A filter drum having a cylindrical shape that accommodates the first screw and interacts with the first screw to separate the juice and residue of the crushed and compressed material, and A juicing drum comprising a first juicing unit that is mounted on the outer surface of the filter drum, sweeps the outer surface of the filter drum and the inner surface of the drum housing, and has a second gear formed at the bottom.

4. In Paragraph 3, A juicing drum further comprising a power transmission unit that is coupled to the upper side of the fixing pin and forms an intermediate gear on the outer surface, the above unit compatible fastening part.

5. In Paragraph 4, The intermediate gear of the power transmission unit is located between the first gear and the second gear, and the juicing drum in which the brush rotates in conjunction with the rotation of the first screw.

6. In Paragraph 4, The above filter drum is a juicing drum in which a first receiving groove is formed in the bottom surface to accommodate a power transmission part of the unit compatible fastening part.

7. In Paragraph 2, The above juicing unit is A second screw formed by a first module and a second module, wherein when the first module and the second module are combined, a gap is formed to separate the juice and residue of the material, and A juicing drum comprising a second juicing unit, the second juicing drum having a cylindrical shape that accommodates the second screw and interacts with the second screw to crush and compress the material.

8. In Paragraph 7, The above-mentioned grinding drum is a juicing drum comprising a cylindrical shape with the top and bottom open, and a barrier formed on the side as a closed surface.

9. In Paragraph 7, The above unit compatible fastening part further includes an O-ring shaped stopper part that is coupled to the upper side of the fixing pin.

10. In Paragraph 9, A juicing drum characterized in that the stopper portion is a packing member that prevents juice or residue from leaking out between the fixing pin and the coupling hole or between the fixing pin and the coupling groove.

11. In Paragraph 9, The above grinding drum is a juicing drum in which a second receiving groove is formed in the bottom surface to accommodate the stopper portion of the unit compatible fastening part.

12. In Paragraph 2, The above fixing pin further forms a hollow fastening hole in the internal longitudinal direction from the bottom, and The above unit compatible fastening portion further includes a fixing screw that is fastened to the fastening hole at the bottom of the drum housing when the above fixing pin is inserted into the coupling hole of the drum housing.

13. In Paragraph 3, A juicing drum in which the juice separated by the above filter drum moves to a juice discharge pipe through a juice discharge port formed on the bottom surface of the drum housing.

14. In Paragraph 7, A juicing drum in which the second screw forms a juice storage space inside, the juice of the crushed material is transferred to the juice storage space through the gap, and the transferred juice moves to a juice discharge pipe through a juice discharge port formed on the bottom surface of the drum housing.

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