Grinder

Abstract

A grinding machine includes a holding mechanism, a roller cutter set installed on the holding mechanism and used for cutting and grinding food materials, and a driving mechanism installed on the holding mechanism and used for driving the roller cutter set. The holding mechanism includes a handle body and a flip cover plate that can pivot relative to the handle body between a pressing position and an open position. The driving mechanism includes a driving rotation unit, a power supply unit, and a first switch unit and a second switch unit electrically connected between the driving rotation unit and the power supply unit. The first switch unit is operable by a user, and the second switch unit can be triggered by the flip cover plate swung to the pressing position. The design that the power supply unit supplies power to drive the driving rotation unit only when the first switch unit and the second switch unit are triggered simultaneously can greatly improve the use safety of the grinding machine of the present invention.

Description

Technical Field

[0001] The present invention relates to a food processing device, and particularly to a grinder for grinding or cutting and shredding food ingredients. Background Art

[0002] In order to process cheese blocks into filaments for convenient use, some manufacturers have developed electric graters that can be used for cutting and shredding cheese blocks. Such electric graters generally include a handle, a pressing plate pivotally provided on the handle, and a cylindrical cutter set provided in the handle. When cutting a cheese block, the cheese block can be placed into an insertion port of the handle, and then the pressing plate is driven to swing towards the handle to push the cheese block in the insertion port towards the cylindrical cutter set. When the power is turned on, the cylindrical cutter set is driven to rotate to start cutting and shredding the cheese block.

[0003] Although such electric graters are quite convenient to use, there are currently safety concerns with such products. Since the cylindrical cutter set will start to be driven to rotate after the power switch is turned on, when the pressing plate is opened to expose the insertion port at this time, the cheese block remaining in the insertion port will be thrown out by the cylindrical cutter set to pollute the surrounding environment or injure people, and the exposed insertion port is also likely to cause users to accidentally touch the rotating cylindrical cutter set and get injured. Summary of the Invention

[0004] The object of the present invention is to provide a grinder that can improve at least one shortcoming of the prior art.

[0005] The grinder of the present invention is suitable for cutting and grinding food ingredients. The grinder includes a holding mechanism, a roller cutter set, and a driving mechanism. The holding mechanism includes a handle body and a flip cover plate pivotally provided on the handle body. The flip cover plate can pivot relative to the handle body between a pressing position and an open position. The handle body has an insertion port for placing the food ingredient, and the flip cover plate changing towards the pressing position can be used to push the food ingredient towards the insertion port. The roller cutter set is installed in the handle body and includes a cylindrical cutter body that can be driven to cut the food ingredient coming from the insertion port.

[0006] The driving mechanism includes a rotation driving unit connected to the cylindrical cutter body, a power supply unit electrically connected to the rotation driving unit, and a first switch unit and a second switch unit electrically connected between the rotation driving unit and the power supply unit. The first switch unit is exposed outside the handle body and can be operated, and the second switch unit is exposed outside the handle body and can be touched by the flip cover plate pivotally changing towards the pressing position. The power supply unit will output the power required for the rotation driving unit to drive the cylindrical cutter body when the first switch unit is operated and the second switch unit is touched.

[0007] For the grinding machine of the present invention, the first switch unit includes a first switch member disposed in the handle body and electrically connected between the driving unit and the power supply unit, and an operating member exposed outside the handle body and connected to the first switch member. The operating member can be operated to lean against the handle body to touch the first switch member.

[0008] For the grinding machine of the present invention, the first switch unit further includes a first elastic member elastically abutted between the handle body and the operating member and constantly driving the operating member to protrude outside the handle body. The operating member can be operated to drive the first elastic member to elastically deform and accumulate a restoring elastic force.

[0009] For the grinding machine of the present invention, the second switch unit includes a second switch member disposed in the handle body and electrically connected between the driving unit and the power supply unit, a pushing member displaceably disposed in the handle body, and a second elastic member elastically abutted between the handle body and the pushing member and constantly driving the pushing member to protrude outside the handle body. The pushing member can be pushed into the handle body by the flip cover plate that pivots and changes to the pressing position to touch the second switch member.

[0010] For the grinding machine of the present invention, the second switch unit is a photoelectric switch, a mechanical touch switch or a magnetic induction switch triggered and activated by the flip cover plate pivoted to the pressing position.

[0011] For the grinding machine of the present invention, the power supply unit has a power switch exposed on the outer surface of the handle body. The power supply unit outputs the power required for the driving unit to drive the cylindrical cutter body when the power switch is turned on, the first switch unit is operated, and the second switch unit is touched.

[0012] For the grinding machine of the present invention, the handle body has a mounting seat portion defining the placement opening and for installing the roller cutter group, and a handle portion extending outward from the mounting seat portion for installing the first switch unit and the second switch unit. The flip cover plate has an operating handle portion pivotally connected to one end of the handle portion away from the mounting seat portion, a pressing convex portion protruding outward from one end of the operating handle portion adjacent to the mounting seat portion, and a pushing portion protruding outward from the operating handle portion toward the handle body. When the flip cover plate pivots to the pressing position, the operating handle portion will lean against the handle portion, and the pressing convex portion will drive the food material in the placement opening toward the roller cutter group, and the pushing portion will be displaced to touch the second switch unit.

[0013] For the grinder of the present invention, the placement opening of the mounting seat portion faces upward. The roller cutter group further includes a feed cylinder seat installed in the mounting seat portion. The feed cylinder seat has a hollow tubular mounting pipe portion extending horizontally, and a tubular feed pipe portion extending radially outward from the mounting pipe portion and communicating between the mounting pipe portion and the placement opening. The feed pipe portion can guide the food material placed through the placement opening downward into the mounting pipe portion. The cylindrical cutter body is rotatably installed in the mounting pipe portion, connected to the driving unit, and can be driven by the driving unit to cut and grind the food material guided downward by the feed pipe portion into the mounting pipe portion.

[0014] For the grinder of the present invention, the mounting seat portion further has a horizontally exposed mounting opening. The feed cylinder seat can be horizontally detachably installed in the mounting seat portion through the mounting opening. The driving unit has a transmission structure coaxially protruding into the mounting pipe portion. The cylindrical cutter body can be detachably connected to the transmission structure by horizontally detaching from the mounting pipe portion through the mounting opening.

[0015] For the grinder of the present invention, the cylindrical cutter body has a cylindrical body portion defined by surrounding, and a plurality of cutting knife portions protruding at intervals on the outer peripheral surface of the body portion for cutting and grinding food materials. The body portion has a plurality of through holes radially penetrating for the food material chips generated by the cutting and grinding of the cutting knife portions to pass radially inward, and a discharge port facing the mounting opening for pouring out the food material chips.

[0016] For the grinder of the present invention, the roller cutter group further includes a knife seat cover detachably installed on the body portion to cover the discharge port.

[0017] The beneficial effect of the present invention is that by electrically connecting the first switch member and the second switch member between the driving unit and the power supply unit, and the design that the driving unit must be powered on and started only when the first switch member and the second switch member are simultaneously touched, the use safety of the grinder of the present invention can be greatly improved. Description of the Drawings

[0018] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, where:

[0019] Figure 1 is a perspective view of an embodiment of the grinder of the present invention;

[0020] Figure 2 is an exploded perspective view of this embodiment;

[0021] Figure 3 is an exploded perspective view of this embodiment;

[0022] Figure 4is a side cross-sectional view of this embodiment, showing the situation when the flip cover plate is in the pressed position;

[0023] Figure 5 is similar to Figure 4 a view of the same, showing the situation when the flip cover plate is in the open position;

[0024] Figure 6 is a functional block diagram of this embodiment;

[0025] Figure 7 is an incomplete side cross-sectional view of this embodiment, showing the structure of the cylindrical cutter body; and

[0026] Figure 8 is similar to Figure 4 a view of the same, schematically showing the situation of cutting a cheese block. Detailed implementation manners

[0027] Refer to Figure 1 and 8 In an embodiment of the grinding machine 200 of the present invention, it is applicable to perform cutting and grinding of food materials, such as grinding food materials like nut kernels, chocolates, etc., or performing cutting treatment on a cheese block. In the following embodiments, taking the cutting, grating or shaving treatment of a cheese block 900 as an example for illustration. The grinding machine 200 includes a holding mechanism 3 for the user to hold, a driving mechanism 5 installed in the holding mechanism 3, and a drum cutter group 4 detachably installed in the holding mechanism 3. For the convenience of description, hereinafter, the left and right sides of Figure 1 are defined as the front and rear directions of the grinding machine 200, and the left and right directions of the grinding machine 200 are defined accordingly.

[0028] Refer to Figure 1 and 2 and 3 and 4, the holding mechanism 3 includes a handle body 31, a flip cover plate 32 located above the handle body 31 and pivotally connected to the handle body 31 so as to be pivotable up and down, and a side cover body 33 detachably installed on the left side surface of the handle body 31.

[0029] The handle body 31 has a mounting seat portion 311, and a handle portion 315 extending rearward from the mounting seat portion 311 and pivotally connected to the flip cover plate 32 via a pivot shaft 30. An installation space 312 for installing the drum cutter group 4 is defined inside the mounting seat portion 311. The installation space 312 has a placement opening 313 exposed upward, and an installation opening 314 exposed leftward. The placement opening 313 can be used for placing the cheese block 900, and the installation opening 314 extends upward to the placement opening 313. The side cover body 33 has a side opening 331 penetrating left and right and communicating with the installation opening 314.

[0030] The flip cover plate 32 has an operating handle portion 321 that extends back and forth and is pivotally connected to the operating handle portion of the pivot shaft 30 in the left and right axial directions at its rear end portion, a pressing convex portion 322 that protrudes downward from the front end portion of the operating handle portion 321, and a pushing portion 323 that protrudes forward from the rear end portion of the operating handle portion 321 and toward the rear end of the grip portion 315. The flip cover plate 32 can be operated to pivot up and down relative to the grip body 31 between an open position and a pressing position. When the flip cover plate 32 changes from the open position to the pressing position, the operating handle portion 321 will swing downward and lean against the grip body 31, and drive the pressing convex portion 322 to move downward toward the insertion port 313, and can be used to push down the cheese block 900 (shown in Figure 8 ) in the insertion port 313. When the flip cover plate 32 is inserted downward into the insertion port 313 with the pressing convex portion 322 and the operating handle portion 321 is limited and leaned against the grip body 31 downward, the flip cover plate 32 has been displaced to the pressing position (as shown in Figure 4 ). When the flip cover plate 32 changes to the open position, the operating handle portion 321 will drive the pressing convex portion 322 to swing upward away from the grip body 31. In addition, when the flip cover plate 32 changes between the pressing position and the open position, the operating handle portion 321 will simultaneously drive the pushing portion 323 to swing and displace. The function of the pushing portion 323 will be described later.

[0031] The driving mechanism 5 is installed in the grip body 31 and includes a driving rotation unit 51, a power supply unit 52, a first switch unit 53 and a second switch unit 54. The driving rotation unit 51 is composed of components such as a motor and a gear transmission group, and has a transmission structure 511 that is exposed in the installation space 312 and is detachably connected to the drum cutter group 4. The driving rotation unit 51 can be powered on and started to drive the drum cutter group 4 to operate through the transmission structure 511. Since there are many types of structures of the driving rotation unit 51 and it is not the focus of improvement of the present invention, it will not be described in detail.

[0032] The power supply unit 52 is electrically connected to the driving rotation unit 51 and can be used to supply the power required for the operation of the driving rotation unit 51, and has a power switch 521 installed and exposed on the bottom side of the grip portion 315. In this embodiment, the power supply unit 52 is of the type powered by a battery, and the battery can be a rechargeable type or a general non-rechargeable battery. However, in practice, in other embodiments of the present invention, the power supply unit 52 can also be changed to the type for connecting an external power source, such as for connecting to the mains power and processing the mains power into the power specification required by the driving rotation unit 51.

[0033] Refer to Figure 4 、 5, 6. The first switch unit 53 and the second switch unit 54 are electrically connected to the power supply loop between the power supply unit 52 and the driving and rotating unit 51. The first switch unit 53 includes a first switch member 531 electrically connected to the power supply loop, an operating member 532 pivotally provided and exposed at the bottom side of the handle portion 315, and a first elastic member 533 disposed in the handle portion 315 and elastically propping between the operating member 532 and the handle portion 315. The first switch member 531 is a micro switch. The operating member 532 can be pressed and operated by the hand holding the handle portion 315, and then swing upward and retract into the handle portion 315, thereby triggering the first switch member 531, that is, switching the first switch member 531 to the ON state. The first elastic member 533 is a spring and always has an elastic force to drive the operating member 532 to swing out of the handle portion 315.

[0034] The second switch unit 54 includes a second switch member 541 electrically connected to the power supply loop and located inside the rear end portion of the handle portion 315, a pushing member 542 that can be telescopically displaced and protrude rearward from the rear end of the handle portion 315 and abut against the pushing portion 323 of the flip cover plate 32, and a second elastic member 543 installed in the handle portion 315 and elastically propping between the handle portion 315 and the pushing member 542. The second switch member 541 is a micro switch. When the flip cover plate 32 pivots from the open position to the pressing position, the pushing member 542 will be gradually pushed forward by the pushing portion 323 and retract into the handle portion 315. When the flip cover plate 32 pivots to a predetermined angle with the handle body 31, the pushing member 542 will start to trigger the second switch member 541, and switch the second switch member 541 to the ON state. The second elastic member 543 always has an elastic force to drive the pushing member 542 to protrude out of the handle portion 315.

[0035] When the power switch 521 of the power supply unit 52 is operated and switched to the ON state, the power supply unit 52 can start to output power. However, it must wait until both the first switch member 531 and the second switch member 541 are triggered and switched to the ON state, then the power supply loop between the power supply unit 52 and the driving and rotating unit 51 will be conducted, and the driving and rotating unit 51 will be driven by the power of the power supply unit 52 to operate.

[0036] Refer to Figure 2 , 3 , 4, 7. The drum cutter group 4 includes a feeding cylinder base 41 that can be detachably installed horizontally to the left through the installation opening 314 in the installation space 312, a cylindrical cutter body 42 inserted rightward into the feeding cylinder base 41 and detachably connected to the transmission structure 511 of the driving and rotating unit 51, and a cutter seat cover 43 detachably covering the left end of the cylindrical cutter body 42.

[0037] The feed cylinder base 41 has a circular tubular mounting pipe portion 411 that axially communicates with the side opening 331 of the side cover body 33 from left to right, and a quadrilateral tubular feed pipe portion 412 that radially communicates with the mounting pipe portion 411 and protrudes radially upward from the mounting pipe portion 411. The top opening of the feed pipe portion 412 correspondingly communicates with the placement port 313 of the handle body 31, and its outer diameter gradually narrows from top to bottom in the front and back directions.

[0038] When the feed cylinder base 41 is installed on the mounting seat portion 311, the top edges of the front and back side walls of the feed pipe portion 412 that gradually expand upward are detachably embedded in the mounting seat portion 311 by sliding leftward, and its top opening communicates with the placement port 313, which can be used to guide the cheese block 900 placed in the placement port 313 downward into the mounting pipe portion 411. The mounting pipe portion 411 is suspended in the installation space 312 through the feed pipe portion 412. The transmission structure 511 of the rotation driving unit 51 axially protrudes leftward into the mounting pipe portion 411.

[0039] The cylindrical cutter body 42 is axially inserted into the mounting pipe portion 411 from left to right in a detachable manner, and includes a cylindrical body portion 421 that axially extends from left to right and protrudes leftward into the side opening 331 of the side cover body 33, a connecting portion 424 coaxially arranged at the right end of the body portion 421 and detachably connected to the transmission structure 511, and a plurality of cutting blade portions 425 protruding from the outer peripheral surface of the body portion 421. The body portion 421 has a discharge port 422 that communicates with the side opening 331 toward the left, and a plurality of through holes 423 that radially penetrate and respectively correspond to the cutting blade portions 425. The cylindrical cutter body 42 can be driven by the transmission structure 511 to rotate relative to the feed cylinder base 41 and the side cover body 33. The cutter seat cover 43 is detachably installed at the left end of the body portion 421 to seal the discharge port 422 of the body portion 421 and is exposed in the side opening 331.

[0040] Refer to Figure 3 、 5 、8, when the grinding machine 200 of the present invention is used for cutting the cheese block 900, the flip cover plate 32 can be flipped upward to the open position (such as Figure 5As shown, the insertion port 313 is exposed, and the cheese block 900 is placed into the insertion port 313. Then, the power switch 521 of the power supply unit 52 is switched to the ON state. At this time, the pushing member 542 of the second switch unit 54 protrudes out of the rear end of the handle body 31 without touching the second switch member 541, making the entire power supply circuit in an open state. The rotation drive unit 51 is powered off and cannot drive the cylindrical knife body 42 to rotate. Even if the operating member 532 of the first switch unit 53 is pressed to touch the first switch member 531, the entire power supply circuit will still remain in the open state, ensuring that there will be no situation of being injured by accidentally touching the rotating cylindrical knife body 42.

[0041] Next, the flip cover plate 32 is swung towards the pressing position, as Figure 8 shown, for pushing the cheese block 900 downward into the feed cylinder base 41 and abutting against the cylindrical knife body 42. During this period, when the hand of the user holding the handle body 31 presses the operating member 532 to touch the first switch member 531, and the flip cover plate 32 pivots downward to form an angle less than a predetermined angle with the handle body 31, driving the pushing member 542 to move inward to touch the second switch member 541, the power supply circuit between the power supply unit 52 and the rotation drive unit 51 is turned on. The rotation drive unit 51 is driven by the power of the power supply unit 52 to start operating, and drives the cylindrical knife body 42 to rotate through the transmission structure 511 to start cutting the cheese block 900.

[0042] At this time, once the user's hand releases the operating member 532 of the first switch unit 53, the first elastic member 533 drives the operating member 532 to disengage from the first switch member 531, disconnecting the power supply circuit between the power supply unit 52 and the rotation drive unit 51, and the rotation drive unit 51 immediately stops driving the cylindrical knife body 42 to rotate.

[0043] The cheese filaments or cheese scraps 901 cut by the cutting knife portion 425 of the cylindrical knife body 42 enter the cylindrical body portion 421 through the through hole 423 and gradually accumulate in the cylindrical body portion 421. When the flip cover plate 32 pivots downward until the operating handle portion 321 abuts against the mounting seat portion 311 downward for positioning, it means that it has been swung to the pressing position, and the cheese block 900 has been roughly cut and processed. At this time, the operating member 532 of the first switch unit 53 can be released, so that the first switch member 531 is no longer touched, and the entire power supply circuit can be opened, causing the rotation drive unit 51 to stop operating. Then, the knife seat cover 43 is opened, and the cheese filaments or cheese scraps 901 accumulated in the cylindrical knife body 42 can be poured out through the discharge port 422.

[0044] When the feed cylinder base 41 and the cylindrical cutter body 42 need to be cleaned, the side cover 33 can be detached from the handle body 31 to expose the mounting opening 314 of the mounting space 312. Then, the feed cylinder base 41 and the cylindrical cutter body 42 can be detached to the left quite conveniently.

[0045] In this embodiment, the second switch unit 54 and the first switch unit 53 are designed with a micro-touch switch structure. However, in other embodiments of the present invention during implementation, the second switch unit 54 can also be changed to a photoelectric switch structure design, a mechanical touch switch structure design, or a magnetic induction switch structure design, and will be triggered by the flip cover 32 to switch to the ON state when the angle between the flip cover 32 and the handle body 31 when pivoting is less than a predetermined angle.

[0046] In summary, by electrically connecting and arranging the first switch member 531 and the second switch member 541 between the driving unit 51 and the power supply unit 52, and making the first switch member 531 can only be touched when the operating member 532 of the first switch unit 53 is operated and pressed, and making the second switch member 541 can only be touched by the pushing member 542 after the flip cover 32 pivots downward to a position below a predetermined angle towards the pressing position, and the design that the driving unit 51 will only be electrically connected to the power supply unit 52 when the first switch member 531 and the second switch member 541 are touched simultaneously. Once the operating member 532 of the first switch unit 53 is not operated, or the flip cover 32 is lifted upward by more than a predetermined angle, and the second switch member 541 is no longer touched, the driving unit 51 will be powered off and stop operating, which can greatly improve the use safety of the grinder 200 of the present invention.

[0047] In addition, through the structural design that the feed cylinder base 41, the cylindrical cutter body 42, and the cutter seat cover 43 of the roller cutter group 4 can be entirely detached from the handle body 31, it is convenient to separately remove the components that come into a large amount of contact with and contaminate the cheese for cleaning, which is quite convenient and practical. Therefore, the purpose of the present invention can indeed be achieved.

[0048] The above are only embodiments of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention still fall within the scope of the present invention.

Claims

1. A grinding machine, suitable for cutting and grinding food materials. The grinding machine includes a holding mechanism, a drum cutter set and a driving mechanism installed on the holding mechanism. The holding mechanism includes a handle body and a flip cover pivotally provided on the handle body. The flip cover can pivot relative to the handle body between a pressing position and an open position. The handle body has an insertion port for placing the food material, and the flip cover moving towards the pressing position can be used to push the food material towards the insertion port. The drum cutter set includes a cylindrical cutter body that can be driven to cut and grind the food material from the insertion port. It is characterized in that: The driving mechanism includes a rotation driving unit connected to the cylindrical cutter body, a power supply unit electrically connected to the rotation driving unit, and a first switch unit and a second switch unit electrically connected between the rotation driving unit and the power supply unit. The first switch unit is exposed outside the handle body and can be operated. The second switch unit is exposed outside the handle body and can be touched by the flip cover that pivots towards the pressing position. The power supply unit will output the power required for the rotation driving unit to drive the cylindrical cutter body when the first switch unit is operated and the second switch unit is touched.

2. The grinding machine according to claim 1, wherein: The first switch unit includes a first switch member provided in the handle body and electrically connected between the rotation driving unit and the power supply unit, and an operating member exposed outside the handle body and connected to the first switch member. The operating member can be operated to lean towards the handle body to touch the first switch member.

3. The grinding machine according to claim 2, characterized in that: The first switch unit further includes a first elastic member elastically abutted between the handle body and the operating member and constantly driving the operating member to protrude outside the handle body. The operating member can be operated to drive the first elastic member to elastically deform and accumulate a reset elastic force.

4. The grinding machine according to claim 1, wherein: The second switch unit includes a second switch member provided in the handle body and electrically connected between the rotation driving unit and the power supply unit, a pushing member displaceably provided in the handle body, and a second elastic member elastically abutted between the handle body and the pushing member and constantly driving the pushing member to protrude outside the handle body. The pushing member can be pushed into the handle body by the flip cover that pivots towards the pressing position to touch the second switch member.

5. The grinding machine according to claim 1, wherein: The second switch unit is a photoelectric switch, a mechanical touch switch or a magnetic induction switch triggered and activated by the flip cover pivoted to the pressing position.

6. The grinding machine according to claim 1, characterized in that: The power supply unit has a power switch exposed on the outer surface of the handle body. The power supply unit will output the power required for the rotation driving unit to drive the cylindrical cutter body when the power switch is turned on, and the first switch unit is operated and the second switch unit is touched.

7. The grinding machine according to claim 1, characterized in that: The handle body has a mounting seat portion defining the insertion inlet and for mounting the drum knife set, and a handle portion extending outward from the mounting seat portion and for mounting the first switch unit and the second switch unit. The flip cover plate has an operating handle portion pivotally connected at one end of the handle portion away from the mounting seat portion, a pressing protrusion protruding outward from one end of the operating handle portion adjacent to the mounting seat portion, and a pushing portion protruding outward from the operating handle portion toward the handle body. When the flip cover plate is pivoted to the pressing position, the operating handle portion will swing toward the handle portion, thereby driving the pressing protrusion to push the food in the insertion inlet toward the drum knife set, and driving the pushing portion to move and trigger the second switch unit.

8. The grinding machine according to claim 7, wherein: The insertion inlet of the mounting seat portion is upward, and the drum knife group also includes a feed cylinder seat installed in the mounting seat portion, the feed cylinder seat has a laterally extending hollow tubular mounting pipe portion, and a tubular feed pipe portion extending radially outward from the mounting pipe portion and connected between the mounting pipe portion and the insertion inlet, the feed pipe portion can guide the food inserted from the insertion inlet downward into the mounting pipe portion, the cylindrical knife body is rotatably mounted in the mounting pipe portion, and is connected to the driving unit, and can be driven by the driving unit to cut and grind the food guided downward by the feed pipe portion into the mounting pipe portion.

9. The grinding machine according to claim 8, wherein: The mounting seat portion also has a laterally exposed mounting opening, and the feed tube seat can be laterally detachably installed in the mounting seat portion via the mounting opening. The driving unit has a transmission structure coaxially protruding into the mounting tube portion, and the cylindrical knife body can be laterally detached from the mounting tube portion via the mounting opening and connected to the transmission structure.

10. The grinder according to claim 9, wherein: The cylindrical cutter body has a cylindrical body portion that defines a cylindrical shape, and a plurality of cutting blade portions that are spaced apart and protrude from the outer circumferential surface of the cylindrical body portion and are used for cutting and grinding food materials. The cylindrical body portion has a plurality of through holes that penetrate radially and are used for radially inward passage of food materials generated by cutting and grinding by the cutting blade portions, and a discharge port that faces the mounting port and can be used to pour out the food materials.

11. The grinder according to claim 10, wherein: The drum knife assembly also includes a knife seat cover which is detachably mounted on the cylinder body and covers the discharge port.

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