Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a food processor which comprises a stirring cup, a driving device and a cutter assembly detachably mounted in the stirring cup. A mounting cavity is defined by the upper shell and the lower shell, the blade is located above the upper shell, the shaft sleeve and the driven magnetic disc are located in the mounting cavity, the driven magnetic disc and the blade are connected through the transmission shaft, the driven magnetic disc is driven by a driving device, and the transmission shaft is rotationally installed on the shaft sleeve through a bearing; the upper end of the shaft sleeve abuts against the upper shell and is limited with the upper shell in the radial direction, the lower shell abuts against the lower end of the shaft sleeve, an avoiding gap is formed between the lower shell and the bottom face of the driven magnetic disc, a lower annular wall extending upwards is arranged on the side portion of the lower shell, and an upper annular wall extending downwards is arranged on the side portion of the upper shell. And the lower ring wall and the upper ring wall are sleeved, matched and fixedly connected. And the shaft sleeve is used as a unified positioning reference to realize the assembly of the cutter assembly, so that the avoidance clearance is more directly and accurately controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a food processor. BACKGROUND

[0002] A food processor in the prior art utilizes magnetic force to drive a knife assembly to rotate in the air, so that the knife assembly can be taken out of a stirring cup, and complete cleaning of the knife assembly and good sealing of the stirring cup are realized. The knife assembly comprises a support base, a rotating shaft rotatably installed on the support base, an upper end of the rotating shaft extending out of the support base to connect a cutter, a driven magnetic disc fixedly connected with a lower end of the rotating shaft, and a shell in a cylindrical shape with one end closed and the other end open, the support base closing the shell to form a sealed cavity, the driven magnetic disc being located in the sealed cavity and connected with the shell. The food processor comprises a base, and the base is provided with a driving magnetic disc, the driven magnetic disc being capable of realizing forward rotation or reverse rotation relative to the shell under the action of a changing magnetic field of the driving magnetic disc to drive the cutter to rotate forward or reversely.

[0003] In the prior art, when the knife assembly is assembled, the bearing and the rotating shaft are installed on the support base, the driven magnetic disc is matched with the support base along with the rotating shaft, and then the shell is matched with the end surface of the mounting base for sealing assembly. The driven magnetic disc must be prearranged with a clearance between the bottom wall of the shell for rotation relative to the shell. Therefore, the existing knife assembly is actually installed with the support base as the installation reference, the driven magnetic disc is hoisted on the support base by means of the rotating shaft and the bearing, and the shell is matched with the support base at the end surface. The clearance between the driven magnetic disc and the bottom wall of the shell is indirectly determined by the end surface matching, and there is no direct limiting between the driven magnetic disc and the bottom wall of the shell. As a result, the assembly dimension chain between the driven magnetic disc and the bottom wall of the shell is long, the clearance is affected by the superposition of the height matching tolerance between the mounting base and the rotating shaft and the height matching tolerance between the shell and the support base, and the clearance cannot be accurately controlled. If the clearance is too small, the driven magnetic disc interferes with the bottom wall of the shell during rotation, causing rotation jamming. If the clearance is too large, the driven magnetic disc is too far away from the driving magnetic disc, causing driving failure. As a result, the transmission magnetic attraction between the driving device and the driven magnetic disc of the food processor fluctuates too much, affecting the product stability of the food processor, and the technical solution of the food processor adopting magnetic transmission cannot be productized and applied. SUMMARY

[0004] The utility model provides a kind of food processor, with shaft sleeve as the unified installation reference of knife assembly, solve the technical problem that the distance between driven magnetic disc and driving device cannot be controlled in prior art because of unreasonable installation reference during the assembly process of the magnetic drive knife assembly, clearance between driven magnetic disc and lower shell cannot be accurately controlled, and the distance between driven magnetic disc and driving device is uncontrollable.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a kind of food processing machine, including stirring cup, driving device, the knife assembly of detachable installation in stirring cup, the knife assembly includes the upper shell and lower shell that install cavity is enclosed, blade located above upper shell, shaft sleeve and driven disk located in the install cavity, the transmission shaft connecting the driven disk with the blade, the driven disk is driven by the driving device, the transmission shaft is rotatably installed in the shaft sleeve by bearing, the upper end of the shaft sleeve is abutted on the upper shell and is axially positioned to the upper shell, the lower end of the shaft sleeve is abutted on the lower shell and is axially positioned to the lower shell, and form avoiding clearance between the bottom surface of the lower shell and the driven disk, the side portion of the lower shell is equipped with the lower ring wall that extends upwards, the side portion of the upper shell is equipped with the upper ring wall that extends downwards, the lower ring wall and the upper ring wall sleeve joint cooperation and fixed connection.

[0007] The utility model provides a kind of food processing machine, by setting up shaft sleeve realizes the centralized installation of transmission shaft and driven disk, the upper end and lower end of the shaft sleeve are respectively abutted on the upper shell and the lower shell, and upper shell realizes axial positioning depending on the upper end of shaft sleeve, and lower shell realizes axial positioning depending on the lower end of shaft sleeve, realize the fixed installation of the limiting of upper shell, shaft sleeve, lower shell, to realize the assembly of knife assembly with shaft sleeve as the unified positioning reference, the abutment of shaft sleeve and lower shell directly determines the size of the avoiding clearance between driven disk and lower shell, to reduce the cooperation dimension chain of knife assembly along axial direction, compared with the installation mode of traditional technology knife assembly, the avoiding clearance formed between the bottom surface of the lower shell and the driven disk is more directly and more accurately controlled.By the side portion of the lower shell is equipped with the lower ring wall that extends upwards, the side portion of the upper shell is equipped with the upper ring wall that extends downwards, the lower ring wall and the upper ring wall sleeve joint cooperation and fixed connection, the nested structure of upper ring wall and lower ring wall is formed, instead of the abutment cooperation of the end surface of upper shell and lower shell, after the fixed connection after the clamping of upper shell and lower shell shaft sleeve, the nested structure of upper ring wall and lower ring wall offsets the axial cooperation tolerance of upper shell and lower shell, further avoids the axial tolerance stack of knife assembly.Therefore, the precise assembly of knife assembly is realized, the installation precision is improved, the size of the avoiding clearance formed between the bottom surface of the lower shell and the driven disk can be accurately controlled according to requirements, so that the rotary avoidance between driven disk and lower shell is realized, the smooth rotation of driven disk is realized, finally the distance between driven disk and driving device such as driving disk is shortened, the effectiveness and reliability of transmission are improved.And, the driven disk and driving device can always be kept within the preset transmission size range in the present application scheme, reliable power transmission can be guaranteed when the food processing machine is mass-produced, so that the non-contact magnetic transmission can be popularized.

[0008] In a preferred embodiment, the shaft sleeve comprises a main body surrounding the outer periphery of the driven magnetic disk and a cylinder body protruding from the upper portion of the main body and accommodating the bearing, the upper end of the cylinder body is provided to abut against the first positioning portion of the upper shell to axially position the upper shell, and the lower end of the main body is provided to abut against the second positioning portion of the lower shell to axially position the lower shell.

[0009] By providing the shaft sleeve with the main body and the cylinder body, the installation position of the bearing and the shaft seal is provided by the cylinder body protruding from the upper portion of the main body, the reliable axial positioning of the upper end of the shaft sleeve is achieved by the upper end of the cylinder body abutting against the first positioning portion of the upper shell, the main body surrounds the outer periphery of the driven magnetic disk, and the lower end of the main body abuts against the second positioning portion of the lower shell, so that the shaft sleeve and the lower shell are axially positioned under the limiting action of the second positioning portion, thereby precisely and directly controlling the clearance between the driven magnetic disk and the lower shell and achieving reliable transmission of the driven magnetic disk.

[0010] In a preferred embodiment, the shaft seal is further installed in the cylinder body above the bearing, the shaft seal is provided with a buffer portion extending to the top surface of the cylinder body, and the first positioning portion abuts the buffer portion against the upper shell.

[0011] By providing the shaft seal, the sealing between the cylinder body and the transmission shaft and between the transmission shaft and the upper shell is improved, and the buffer portion is provided on the shaft seal, and the first positioning portion abuts the buffer portion against the upper shell, so that the shaft seal integrates the sealing and buffering functions, achieves flexible connection between the upper shell and the shaft sleeve, and absorbs the assembly error caused by the machining error of the upper shell and the shaft sleeve, thereby improving the assembly accuracy of the knife assembly.

[0012] In a preferred embodiment, the upper shell comprises a sleeve for radially positioning the cylinder body and an upper shell wall extending outward from the bottom of the sleeve, the upper ring wall is located at the edge of the upper shell wall, the upper shell wall has a horizontally extending horizontal portion, and the upper end of the main body is provided with a third positioning portion abutting against the horizontal portion.

[0013] The upper shell comprises the sleeve and the upper shell wall, the sleeve is used to radially and axially position the cylinder body of the shaft sleeve, and the third positioning portion at the upper end of the main body abuts against the horizontal portion of the upper shell wall to achieve secondary positioning, so that the shaft sleeve and the upper shell are reliably connected and precisely matched under the double positioning action of the first positioning portion and the third positioning portion.

[0014] In a preferred embodiment, a ring rib is provided at the lower end of the main body and surrounds the outer periphery of the driven magnetic disk, the ring rib protrudes downward from the driven magnetic disk and abuts against the lower shell, and the ring rib forms the second positioning portion.

[0015] The second positioning part is formed by arranging a ring rib at the lower end of the main body, and the ring rib can abut against the lower shell along the circumferential direction of the driven magnetic disk to achieve reliable positioning in all directions.

[0016] In a preferred embodiment, the upper ring wall is a downwardly bent flange, and the outer side of the flange gradually shrinks inwardly so that the thickness of the flange decreases from top to bottom, and the top of the lower ring wall is inserted into the inner side of the flange.

[0017] The upper ring wall is arranged as a downwardly bent flange, which is small in size and facilitates the molding and manufacturing of the upper shell. The outer side of the flange gradually shrinks inwardly so that the thickness of the flange decreases from top to bottom, thereby providing a certain elasticity to the flange. During the insertion of the lower ring wall of the lower shell into the inner side of the upper ring wall, the flange can be deformed outwardly, thereby facilitating assembly, saving labor and improving installation efficiency.

[0018] In a preferred embodiment, a guide slope is arranged at the top of the lower ring wall to cooperate with the upper ring wall.

[0019] The guide slope is arranged to guide the nesting cooperation of the upper ring wall and the lower ring wall, thereby facilitating assembly and alignment, saving labor and achieving quick insertion of the upper ring wall and the lower ring wall, so as to further fix the upper ring wall and the lower ring wall and improve assembly efficiency.

[0020] In a preferred embodiment, the top of the lower ring wall is inserted into the inner side of the upper ring wall, and the lower ring wall is welded to the upper ring wall.

[0021] The top of the lower ring wall is inserted into the inner side of the upper ring wall, which realizes the wrapping of the upper shell around the top end of the lower shell, so that the cooperation seam of the two can be downward, facilitating the cooperation and sealing between the upper shell and the lower shell. Moreover, the lower ring wall is welded to the upper ring wall, which is simple to assemble and reliable in fixation.

[0022] In a preferred embodiment, the lower end of the shaft sleeve includes a magnetic isolation ring surrounding the outer periphery of the driven magnetic disk and a ring rib located at the outer periphery of the magnetic isolation ring. The magnetic isolation ring and the ring rib form a mounting groove for mounting a magnet. The magnetic isolation ring and / or the ring rib abut against the lower shell. Of course, the magnet can be a ring magnet or a separate magnet block arranged in the mounting groove.

[0023] More preferably, a magnetic attraction member is fixed to the outer side of the bottom wall of the stirring cup, and the magnet is attracted to the magnetic attraction member. The magnetic attraction member can be a magnet block or an iron block.

[0024] More preferably, the food processor further includes a detection device for detecting the position of the magnet, such as a reed switch or a Hall element.

[0025] By setting a magnetic shielding ring and a ring rib at the lower end of the bushing, and using the magnetic shielding ring and the ring rib to form an installation groove to limit the installation of the magnet, a reliable fixation between the magnet and the bushing is achieved. Moreover, under the isolation effect of the magnetic shielding ring, the magnetic fields between the magnet and the driven disk are isolated from each other and do not interfere with each other, thus realizing reliable transmission of the driven disk. The magnetic shielding ring or the ring rib is used to abut against the lower housing to achieve the abutment between the bushing and the lower housing. No additional abutment part is required, which simplifies the structure of the bushing. The structure is compact and reasonable, and the clearance between the driven disk and the lower housing can be precisely controlled.

[0026] By installing a magnetic chuck on the outer side of the bottom wall of the mixing cup, the axial positioning between the blade assembly and the mixing cup is achieved through the attraction between the magnetic chuck and the magnet. This prevents severe axial runout of the blade assembly during operation, thus reducing noise and reducing working noise. It also prevents the blade assembly from detaching from the mixing cup and falling during the user's pouring process after processing, thus avoiding impact damage. Therefore, the axial positioning between the blade assembly and the mixing cup is improved, enhancing the user experience. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a cross-sectional structural diagram of a food processing machine according to one embodiment of the present invention;

[0029] Figure 2 This is an exploded cross-sectional view of the blade assembly in one embodiment of the present invention;

[0030] Figure 3 This is an exploded structural diagram of the blade assembly in one embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional schematic diagram of the blade assembly in one embodiment of the present invention;

[0032] Figure 5 This is a cross-sectional structural diagram of the bushing in one embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the bushing structure in one embodiment of the present invention.

[0034] List of components and reference numerals: 10. Stirring cup; 11. Drive unit; 111. Drive disk; 20. Blade assembly; 21. Upper housing; 211. Upper annular wall; 212. Sleeve; 213. Upper housing wall; 2131. Horizontal part; 22. Lower housing; 221. Lower annular wall; 23. Blade; 24. Bushing; 241. Main body; 242. Cylinder; 243. First positioning part; 244. Second positioning part; 245. Third positioning part; 246. Magnetic isolation ring; 2461. Annular rib; 2462. Metal ring; 2463. Raised rib; 247. Annular rib; 248. Mounting groove; 25. Driven disk; 26. Drive shaft; 27. Bearing; 28. Shaft seal; 281. Buffer part; 30. Main unit; 40. Motor; 50. Magnet; 60. Magnetic suction element. Detailed Implementation

[0035] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0037] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] like Figure 1 As shown, in one embodiment, this utility model provides a food processing machine, including a mixing cup 10, a drive device 11, and a blade assembly 20 detachably installed inside the mixing cup 10. Figure 2 , 3 As shown in Figure 4, the blade assembly 20 includes an upper housing 21 and a lower housing 22 that enclose a mounting cavity, a blade 23 located above the upper housing 21, a bushing 24 and a driven disk 25 located in the mounting cavity, and a drive shaft 26 connecting the driven disk 25 and the blade 23. The driven disk 25 is driven by a drive device 11. The drive shaft 26 is rotatably mounted on the bushing 24 via a bearing 27. The upper end of the bushing 24 abuts against the upper housing 21 to axially and radially limit the upper housing 21. The lower housing 22 abuts against the lower end of the bushing 24 to axially limit the lower housing, and a clearance gap is formed between the lower housing 22 and the bottom surface of the driven disk 25. Figure 4 As shown, the lower housing 22 has an upwardly extending lower ring wall 221 on its side, and the upper housing 21 has a downwardly extending upper ring wall 211 on its side. The lower ring wall 221 and the upper ring wall 211 are fitted together and fixedly connected.

[0041] like Figure 1 As shown, preferably, the food processor also includes a main unit 30 supporting the mixing cup 10. The mixing cup 10 can be detachably mounted on top of the main unit 30 or fixedly mounted on top of the main unit 30. The drive device 11 is installed inside the main unit 30. It should be noted that this invention does not limit the specific structure of the drive device 11. For example, in a preferred embodiment, such as... Figure 1 As shown, the drive device 11 includes a motor 40 and a drive disk 111 driven by the shaft of the motor 40. The drive disk 111 is located below the driven disk 25 and drives the driven disk 25 to rotate remotely.

[0042] Of course, in another preferred embodiment, the driving device 11 is an electromagnetic coil that generates a magnetic field after being energized, including a stator and a coil winding wound on the stator. The electromagnetic coil surrounds the outer periphery of the driven disk 25 and drives the driven disk 25 to rotate in the air.

[0043] The food processing machine provided by this utility model achieves centralized installation of the drive shaft 26 and the driven disk 25 by setting a bushing 24. The upper and lower ends of the bushing 24 abut against the upper housing 21 and the lower housing 22 respectively. Thus, the bushing 24 serves as a unified positioning reference to achieve the assembly of the blade assembly 20. The abutment between the bushing 24 and the lower housing 22 directly determines the size of the clearance between the driven disk 25 and the lower housing 22, thereby reducing the axial mating dimension chain of the blade assembly 20. Compared with the traditional installation method of the blade assembly 20, the clearance formed between the bottom surface of the lower housing 22 and the driven disk 25 can be controlled more directly and accurately. By employing an upwardly extending lower annular wall 221 on the side of the lower housing 22 and a downwardly extending upper annular wall 211 on the side of the upper housing 21, the lower annular wall 221 and the upper annular wall 211 are sleeved and fixedly connected, forming a nested structure instead of abutting the end faces of the upper housing 21 and the lower housing 22. After the upper housing 21 and the lower housing 22 clamp the bushing and are fixedly connected, the sleeved connection between the lower annular wall 221 and the upper annular wall 211 offsets the axial fit tolerance between the upper housing 21 and the lower housing 22, further avoiding the stacking of axial tolerances of the tool assembly 20. Therefore, the precise assembly of the blade assembly 20 is achieved, improving the installation accuracy. This allows the clearance between the lower housing 22 and the bottom surface of the driven disk 25 to be precisely controlled as required. This not only achieves rotational clearance between the driven disk 25 and the lower housing 22, enabling the smooth rotation of the driven disk 25, but also reduces the distance between the driven disk 25 and the drive device 11, such as the drive disk, thereby improving the effectiveness and reliability of the transmission.

[0044] In a preferred embodiment, the bushing 24 includes a main body 241 surrounding the outer periphery of the driven disk 25 and a cylindrical body 242 protruding from the upper part of the main body 241 and accommodating the bearing 27. The upper end of the cylindrical body 242 is provided with a first positioning part 243 that abuts against the upper housing 21, and the lower end of the main body 241 is provided with a second positioning part 244 that abuts against the lower housing 22.

[0045] By setting the bushing 24 as a main body 241 and a cylinder 242, the cylinder 242 protrudes from the upper part of the main body 241 to provide an installation position for the bearing 27 and the shaft seal 28. The upper end of the cylinder 242 is provided with a first positioning part 243 that abuts against the upper housing 21 to achieve reliable positioning of the upper end of the bushing 24. The main body 241 surrounds the outer periphery of the driven disk 25, and the lower end of the main body 241 is provided with a second positioning part 244 that abuts against the lower housing 22. Therefore, under the limiting action of the second positioning part 244, the bushing 24 and the lower housing 22 are limited, thereby enabling precise and direct control of the clearance between the driven disk 25 and the lower housing 22, and achieving reliable transmission of the driven disk 25.

[0046] like Figure 2 , 3 As shown, in a more preferred embodiment, a shaft seal 28 located above the bearing 27 is also installed in the cylinder 242. The shaft seal 28 is provided with a buffer portion 281 extending to the top surface of the cylinder 242, and the first positioning portion 243 presses the buffer portion against the upper housing 21.

[0047] By setting the shaft seal 28, the sealing performance between the cylinder 242 and the drive shaft 26, and between the drive shaft 26 and the upper housing 21 is improved. At the same time, the shaft seal 28 is provided with a buffer part, and the first positioning part 243 presses the buffer part against the upper housing 21. Therefore, the shaft seal 28 not only plays a sealing role but also integrates a buffering role, realizing a flexible connection between the upper housing 21 and the bushing 24. The buffer part can also absorb the assembly errors caused by the machining errors of the upper housing 21 and the bushing 24, thereby improving the assembly accuracy of the tool assembly 20.

[0048] like Figure 5 As shown, in a preferred embodiment, the bushing 24 includes a main body 241 surrounding the outer periphery of the driven disk 25 and a cylindrical body 242 protruding from the upper part of the main body 241 and accommodating the bearing 27. The upper end of the cylindrical body 242 is provided with a first positioning part 243 that abuts against the upper housing 21, and the lower end of the main body 241 is provided with a second positioning part 244 that abuts against the lower housing 22. Figure 2 , 3 As shown in Figure 4, the upper shell 21 includes a sleeve 212 for inserting the cylinder 242 to radially limit it and an upper shell wall 213 extending outward from the bottom of the sleeve 212. The upper ring wall 211 is located at the edge of the upper shell wall 213. The upper shell wall 213 has a horizontally extending horizontal portion 2131. The upper end of the main body 241 is provided with a third positioning portion 245 that abuts against the horizontal portion 2131.

[0049] In this embodiment, the upper housing 21 includes a sleeve 212 and an upper housing wall 213. The sleeve 212 is used to radially and axially limit the cylindrical body 242 of the bushing 24. At the same time, the third positioning part 245 at the upper end of the main body 241 abuts against the horizontal part 2131 of the upper housing wall 213 to achieve secondary positioning. Therefore, the bushing 24 and the upper housing 21 achieve reliable connection and precise fit under the dual positioning action of the first positioning part 243 and the third positioning part 245.

[0050] like Figure 5 As shown, in a preferred embodiment, a ring rib 247 is provided at the lower end of the main body 241 on the outer periphery of the driven disk 25. The ring rib 247 protrudes downward from the driven disk 25 and abuts against the lower housing 22, forming a second positioning part 244.

[0051] By using the lower end of the main body 241 to form a second positioning part 244, the circumferential ...

[0052] This utility model does not limit the specific way the upper and lower ring walls are fitted together, for example... Figure 4 As shown, in a preferred embodiment, the upper ring wall 211 is a downwardly bent edge, and the outer side of the edge gradually shrinks inward so that the thickness of the edge becomes thinner from top to bottom, and the top of the lower ring wall 221 is inserted into the inner side of the edge.

[0053] By setting the upper ring wall 211 as a downward-bent folded edge, it is compact in shape and convenient for the molding and manufacturing of the upper shell 21. The outer side of the folded edge gradually shrinks inward, making the thickness of the folded edge thinner from top to bottom, thereby providing a certain degree of elasticity to the folded edge. When the lower ring wall 221 of the lower shell 22 is inserted into the inner side of the upper ring wall 211, it can deform outward appropriately, thereby facilitating assembly, saving effort in installation, and improving installation efficiency.

[0054] In a preferred embodiment, a guide slope is provided at the top of the lower ring wall 221 to engage with the upper ring wall 211.

[0055] By setting a guide slope, a guide is formed for the nesting and mating of the upper ring wall 211 and the lower ring wall 221, which facilitates assembly and alignment, reduces installation effort, and enables the quick insertion of the upper ring wall 211 and the lower ring wall 221, so as to further fix the upper ring wall 211 and the lower ring wall 221 and improve assembly efficiency.

[0056] Optionally, the top of the lower ring wall 221 is inserted into the inner side of the upper ring wall 211, and the lower ring wall 221 is welded to the upper ring wall 211. In this configuration, the guide ramp is located at the top of the outer side of the lower ring wall. Of course, in another preferred embodiment, the upper ring wall 211 is inserted into the inner side of the lower ring wall 221, and the upper ring wall 211 and lower ring wall 221 are fixedly connected. In this configuration, the guide ramp is located at the top of the outer side of the upper ring wall.

[0057] By inserting the top of the lower ring wall 221 into the inner side of the upper ring wall 211, the upper shell 21 wraps around the top of the lower shell 22, allowing the mating seam between the two to face downwards, which facilitates sealing the mating between the upper shell 21 and the lower shell 22. Moreover, by using the welding method between the lower ring wall 221 and the upper ring wall 211, the assembly is simple and the fixation is reliable.

[0058] like Figure 6 As shown, in a preferred embodiment, the lower end of the bushing 24 includes a magnetic shielding ring 246 surrounding the driven disk 25 and a ring rib 247 located around the outer periphery of the magnetic shielding ring 246. The magnetic shielding ring 246 and the ring rib 247 form a mounting groove 248 for mounting the magnet 50. The magnetic shielding ring 246 and / or the ring rib 247 abut against the lower housing 22. Preferably, the ring rib 247 abuts against the lower housing 22, and the magnetic shielding ring 246 is separated from the lower housing 22 to avoid over-positioning due to machining errors.

[0059] It should be noted that the magnet 50 is used for axial positioning between the blade assembly 20 and the mixing cup 10. A magnetic suction element 60 is fixed on the outer side of the bottom wall of the mixing cup 10, and the magnet 50 is attracted to the magnetic suction element 60. Alternatively, the food processing machine may also include a detection device for detecting the position of the magnet 50, and the magnet 50 is used for position detection of the blade assembly 20.

[0060] The magnetic attractor can be a magnet or an iron block. The detection device can be a reed switch or a Hall element.

[0061] It should be noted that the magnetic shielding ring 246 is preferably a metal part to isolate the magnetic field between the magnet 50 and the driven disk 25. The magnetic shielding ring 246 can be integrally formed with the bushing, or, as... Figure 5 , 6 As shown, the magnetic shielding ring 246 includes an annular rib 2461 integrally formed with the bushing and a metal ring 2462 sleeved on the outer periphery of the annular rib. Preferably, a protruding rib 2463 providing friction force is provided on the outer side of the annular rib 2461 to achieve a reliable connection between the annular rib 2461 and the metal ring 2462.

[0062] By setting a magnetic shielding ring 246 and a ring rib 247 at the lower end of the bushing 24, and using the magnetic shielding ring 246 and the ring rib 247 to form an installation groove 248 to limit the installation of the magnet 50, the magnet 50 and the bushing 24 are reliably fixed. Moreover, under the isolation effect of the magnetic shielding ring 246, the magnetic fields between the magnet 50 and the driven disk 25 are isolated from each other and do not interfere with each other, thus realizing the reliable transmission of the driven disk 25. The bushing 24 and the lower housing 22 are abutted by the magnetic shielding ring 246 or the ring rib 247, which eliminates the need for additional abutment parts, simplifying the structure of the bushing 24. The structure is compact and reasonable, and the clearance between the driven disk 25 and the lower housing 22 is precisely controlled.

[0063] By setting a magnetic suction component 60 on the outer side of the bottom wall of the mixing cup 10, the axial positioning between the blade assembly 20 and the mixing cup 10 is achieved by the attraction between the magnetic suction component 60 and the magnet 50. This avoids severe axial runout of the blade assembly 20 during operation, which would generate noise and help reduce working noise. At the same time, it also prevents the blade assembly 20 from falling off the mixing cup 10 and causing damage during the user's pouring process after processing. Therefore, the axial positioning between the blade assembly 20 and the mixing cup 10 is improved, enhancing the user experience.

[0064] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0065] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A food processing machine, comprising a mixing cup, a drive unit, and a blade assembly detachably installed within the mixing cup, characterized in that, The blade assembly includes an upper housing and a lower housing that enclose a mounting cavity, a blade located above the upper housing, a bushing and a driven disk located in the mounting cavity, and a drive shaft connecting the driven disk and the blade. The driven disk is driven by the drive device. The drive shaft is rotatably mounted on the bushing via a bearing. The upper end of the bushing abuts against the upper housing and axially limits the upper housing. The lower end of the bushing abuts against the lower housing and axially limits the lower housing. A clearance gap is formed between the lower housing and the bottom surface of the driven disk. The side of the lower housing has an upwardly extending lower ring wall, and the side of the upper housing has a downwardly extending upper ring wall. The lower ring wall and the upper ring wall are sleeved and fixedly connected.

2. The food processing machine according to claim 1, characterized in that, The bushing includes a main body surrounding the outer periphery of the driven disk and a cylindrical body protruding from the upper part of the main body and accommodating the bearing. The upper end of the cylindrical body is provided with a first positioning part that abuts against the upper housing to axially limit the upper housing. The lower end of the main body is provided with a second positioning part that abuts against the lower housing to axially limit the lower housing.

3. A food processing machine according to claim 2, characterized in that, The cylinder is also equipped with a shaft seal located above the bearing. The shaft seal has a buffer portion extending to the top surface of the cylinder. The first positioning portion presses the buffer portion against the upper housing.

4. A food processing machine according to claim 2, characterized in that, The upper housing includes a sleeve for the insertion of the cylinder to be radially limited and an upper housing wall extending outward from the bottom of the sleeve. The upper annular wall is located at the edge of the upper housing wall. The upper housing wall has a horizontally extending horizontal portion. The upper end of the main body is provided with a third positioning portion that abuts against the horizontal portion.

5. A food processing machine according to claim 2, characterized in that, A ring rib is provided at the lower end of the main body, located on the outer periphery of the driven disk. The ring rib protrudes downward from the driven disk and abuts against the lower housing, forming the second positioning part.

6. A food processing machine according to claim 1, characterized in that, The upper ring wall is a downward-bent edge, and the outer side of the edge gradually shrinks inward, making the edge thickness thinner from top to bottom. The top of the lower ring wall is inserted into the inner side of the edge.

7. A food processing machine according to claim 1, characterized in that, A guide slope is provided at the top of the lower ring wall to engage with the upper ring wall.

8. A food processing machine according to claim 1, characterized in that, The top of the lower ring wall is inserted into the inner side of the upper ring wall, and the lower ring wall is welded to the upper ring wall.

9. A food processing machine according to claim 1, characterized in that, The lower end of the bushing includes a magnetic shielding ring surrounding the outer periphery of the driven disk and a ring rib located on the outer periphery of the magnetic shielding ring. The magnetic shielding ring and the ring rib form a mounting groove for mounting a magnet. The magnetic shielding ring and / or the ring rib abut against the lower housing.

10. A food processing machine according to claim 9, characterized in that, A magnetic attractor is fixed to the outer side of the bottom wall of the stirring cup, and the magnet is attracted to the magnetic attractor. Alternatively, the food processing machine may also include a detection device for detecting the position of the magnet.

Images