Active magnetic disk assembly capable of working stably and power assembly

Abstract

The utility model discloses a stable working active magnetic disk assembly, which comprises a disk body and a permanent magnet arranged on the disk body, and further comprises a bearing arranged at the rotation center of the disk body, the bearing comprises a first rotation part and a second rotation part which rotate relatively, the first rotation part is fixedly connected with the disk body, and the second rotation part is fixedly connected with the disk body. The second rotating part protrudes out of the disk body and forms the upper end face of the driving magnetic disk assembly. The driving magnetic disk assembly can bear relative rotation with the corresponding cup body or the driven magnetic disk through the bearing, and the distance between the driving magnetic disk assembly and the driven magnetic disk and the magnetic acting force are guaranteed. Correspondingly, the utility model further discloses a power assembly which comprises the motor and the driving magnetic disk assembly, and the driving magnetic disk assembly has the moving gap in the axial direction of the motor shaft. And the assembly error between the driving magnetic disk assembly and the driven magnetic disk is adjusted by utilizing the axial movement gap of the driving magnetic disk assembly, so that the distance and the magnetic acting force between the driving magnetic disk assembly and the driven magnetic disk are further ensured.

Description

Technical Field

[0001] The present application relates to the field of food processing, and in particular to an active magnetic disk assembly used for non-contact power transmission and for providing power when driven by a power assembly. Background Art

[0002] Existing food processors, such as blenders and food processors, use motors to drive a pulverizer to cut and crush food. In existing solutions, the motor is connected to the pulverizer via a detachable connector assembly. However, the connector assemblies in the mechanical structure collide with each other during operation, resulting in high vibration and noise, which degrades the user experience of the food processor.

[0003] Based on this, the existing scheme also adopts a magnetic transmission method to realize the power transmission between the motor and the crushing piece, which mainly includes two methods: Method 1, the motor is connected to the active disk, and the driven disk is connected to the crushing piece. The motor drives the active disk to drive the driven disk and finally drives the crushing piece. There is no contact between the active disk and the driven disk. Usually, the active disk and the driven disk are separated by the cup body of the food processor; Method 2, the active disk and the driven disk attract each other to transmit power. Although the active disk and the driven disk do not have cross-displaced protrusions set like the mechanical connector, they are completely fitted together, and vibration and noise will be directly transmitted between the active disk and the driven disk.

[0004] Both existing magnetic transmission methods have technical defects: the completely non-contact transmission method 1 causes the distance between the active disk and the driven disk to be too large, affecting the magnetic force between the active disk and the driven disk, and reducing the efficiency of power transmission; the fully contact solution of method 2 cannot realize the transmission of the spaced cup body. At the same time, the vibration and noise generated by the crushing parts during operation will be transmitted to the motor through the driven disk and the active disk, causing the vibration and noise of the food processor to increase. Summary of the Invention

[0005] The purpose of the present utility model is to provide an active disk assembly and a power assembly with stable operation, so as to solve the technical problems in the prior art of weak transmission power and poor transmission efficiency of the active disk assembly, as well as the mutual friction, vibration and direct transmission of noise existing in the directly attracted magnetic drive structure.

[0006] In order to solve the above technical problems, the present application provides an active magnetic disk assembly with stable operation, including a disk body and a permanent magnet arranged on the disk body, wherein, it also includes a bearing arranged at the rotation center of the disk body, and the bearing includes a first rotating part and a second rotating part that rotate relative to each other, the first rotating part is fixedly connected to the disk body, and the second rotating part protrudes from the disk body and constitutes the upper end surface of the active magnetic disk assembly.

[0007] Preferably, a mounting hole for accommodating the bearing is provided at the rotation center of the disc body.

[0008] Preferably, the second rotating portion includes an inner ring and an abutment member mounted on the inner ring, and the abutment member protrudes from the disc body.

[0009] Preferably, the abutment member includes a fixing post and an abutment head, the fixing post is clamped in the center hole of the inner ring, and the abutment head blocks the inner ring in the axial direction.

[0010] Preferably, the abutment joint is a rotating body concentric with the rotation center of the inner ring, and an annular abutment rib is further provided on the upper end surface of the abutment joint.

[0011] Preferably, the disc body is provided with a mounting cavity for accommodating the permanent magnet, the mounting cavity surrounds the outer periphery of the bearing, and the permanent magnet at least partially overlaps with the bearing in the axial direction.

[0012] Preferably, the installation cavity is located on the upper end surface of the disk body, and the disk body includes a cover plate that closes the upper opening of the installation cavity.

[0013] In order to solve the main technical problem, the present application also provides a stable working power component, which includes a motor and an active disk component as described in the above technical solution, the active disk component is installed at the upper end of the motor shaft of the motor, and the active disk component has a moving gap in the axial direction of the motor shaft.

[0014] Preferably, a fixing hole is provided in the center of the disk body, and the inner wall of the fixing hole is provided with a retaining rib extending toward the center of the fixing hole, the retaining rib divides the fixing hole into a fixing section and a limiting section, the motor shaft is inserted into the fixing section, and a fixing piece connected to the motor shaft is provided in the limiting section, and the retaining rib moves axially between the motor shaft and the fixing piece.

[0015] Preferably, the power assembly further includes an elastic member, which pushes the retaining rib to abut against the motor shaft; or, the power assembly further includes an elastic member, which pushes the retaining rib to abut against the fixing member; or, the power assembly further includes an elastic member, which axially clamps the retaining rib between the elastic members so that the retaining rib is axially located between the retaining rib and the motor shaft.

[0016] Compared with the existing technology, this application has at least the following technical effects:

[0017] 1. The present application provides an active disk assembly, wherein the active disk assembly is provided with a permanent magnet to achieve contactless power transmission. Furthermore, a bearing is disposed at the rotational center of the disk body, the bearing comprising a first rotating portion and a second rotating portion opposed to each other, the second rotating portion protruding from the disk body and constituting the upper end surface of the active disk assembly. Thus, when the active disk assembly is transmitting power, for example, when the active disk assembly and a driven disk assembly placed in a cup body are attracted to each other and magnetically driven, the second rotating portion of the active disk assembly can abut against the outer wall of the cup body, the disk body, the permanent magnet, and the first rotating portion rotating together, while the second rotating portion and the cup body remain stationary. The bearing enables relative rotation between the permanent magnet and the cup body, thereby ensuring a sufficiently small distance between the disk body, the permanent magnet, and the cup body, providing a magnetic interaction force between the active disk assembly and the driven disk, improving magnetic transmission efficiency, and preventing the active disk assembly from being affected by the vibration and noise of the driven disk when the two are in direct contact.

[0018] 2. A mounting hole for accommodating the bearing is directly located in the center of the disk. The bearing is positioned within the mounting hole. Positioned within the mounting hole, the bearing can better maintain concentricity with the disk and permanent magnet. When the active magnetic disk assembly utilizes the bearing for relative rotation, the first mounting portion of the bearing is directly secured to the disk through the mounting hole, while the second mounting portion rotates concentrically with the disk and permanent magnet, resulting in more stable and reliable operation. Furthermore, the height of the second rotating portion of the bearing, positioned within the mounting hole, protruding from the disk makes it easier to control, thereby reducing the distance between the disk, particularly the permanent magnet, and the driven magnetic disk used for the power drive, thereby enhancing the magnetic interaction.

[0019] 3. For bearings, the use of universal standard parts can reduce costs, but the size of universal standard parts may not necessarily meet the requirements of the active disk assembly in this solution. The second rotating part further includes an abutment installed on the inner ring, which is used to protrude from the disk body. For example, when the active disk assembly contacts the cup body, the abutment contacts the outer wall of the cup body and bears the force between the active disk assembly and the cup body, and is used to control the distance between the active disk assembly and the cup body. On the one hand, the size of the abutment can be controlled, and even the abutment can be installed on the inner ring and then processed to more accurately control the height of the abutment protruding from the disk body, and ultimately control the distance from the permanent magnet to the driven disk; on the other hand, when the abutment is used for a long time and friction, deformation, and other conditions that affect normal operation occur, the abutment can be directly replaced to achieve low-cost product life cycle maintenance.

[0020] 4. The fixing post is directly inserted into the center hole of the inner ring and fixedly connected to the inner ring, which can better ensure that the abutment is concentric with the inner ring, making the relative rotation of the second rotating part, the disk body and the permanent magnet more stable and reliable. The abutment is set to block the inner ring in the axial direction, so that the abutment can provide a larger contact area than the inner ring. When the abutment contacts the outer wall of the cup body, the abutment with a larger contact area can stabilize the contact between the active disk assembly and the cup body. When the active disk assembly is working, the disk body and the permanent magnet can also rotate relative to the abutment in a balanced manner. At the same time, the abutment blocks the inner ring, and in particular, it is preferred to set the outer diameter of the abutment to be close to the inner diameter of the mounting hole, so as to completely block the bearing, prevent dust and the like from entering the interior of the bearing, and protect the bearing.

[0021] 5. The abutment joint of the rotating body ensures better balance when abutting against the cup body in any direction, preventing the active disk assembly from being affected by the assembly relationship and improving the stability of the active disk assembly's power transmission. Annular abutment ribs are also provided on the upper end surface of the abutment joint. This not only controls the distance between the active disk assembly and the cup body, but also ensures contact stability, reducing contact instability caused by difficult-to-control flatness of the contact surfaces during large-area direct contact.

[0022] 6. The disk body is flattened, surrounding the outer perimeter of the bearing. When the active disk assembly is in close proximity to the outer wall of the cup, the peripheral permanent magnets can also be brought into direct contact with the outer wall, reducing the distance between the active disk assembly and the driven disk, thereby improving power transmission efficiency. Furthermore, the larger perimeter of the bearing's peripheral mounting cavity allows for the installation of more and larger permanent magnets, enhancing the magnetic properties of the active disk assembly. Furthermore, the central bearing at the center of rotation does not require an excessively large diameter; a smaller bearing can be selected to meet the requirements. During operation, the linear mass of the bearing itself is relatively small, ensuring that the bearing can withstand higher rotational demands. During the mutual attraction and transmission between the active disk assembly and the driven disk, their magnetic poles are positioned opposite each other. At this point, the magnetic poles of the permanent magnets located on the outer periphery of the bearing do not directly face the bearing, preventing the magnetic attraction of the permanent magnets from directly acting on the bearing and improving its operational stability.

[0023] 7. A mounting cavity for the permanent magnet is provided on the upper end surface of the disk body, reducing the distance between the permanent magnet and the cup or driven disk, thereby enhancing the magnetic interaction between the active disk assembly and the driven disk. A cover is provided to seal the upper opening of the mounting cavity, preventing external dust, liquids, etc. from entering the cavity and better protecting the permanent magnet.

[0024] 8. To achieve better power transmission, the present application further provides a stable power assembly, wherein the aforementioned active disk assembly is mounted on the upper end of the motor shaft of the motor, and the motor is used to drive the active disk assembly to rotate. The active disk assembly has a clearance in the axial direction of the motor shaft. When the active disk assembly contacts the cup body, if the motor itself is restricted by installation conditions and cannot ensure direct contact between the active disk assembly and the outer wall of the cup body, the active disk assembly can use the clearance to move closer to the outside of the cup body under the magnetic attraction force of the driven disk, thereby reducing the distance between the active disk assembly and the driven disk, increasing the magnetic attraction between the active disk assembly and the driven disk, and improving the transmission efficiency of the active disk assembly. If the installation of the motor causes the active disk assembly to be located within the installation space of the cup body, that is, if the cup body first contacts the active disk assembly during installation and cannot be installed properly, the active disk assembly can be displaced under the pushing action of the cup body to avoid the installation space of the cup body, while also ensuring that the active disk assembly is close to the bottom of the cup for better power transmission.

[0025] 9. Directly set a fixing hole in the center of the disk body, then use the disk body to form a retaining rib, and then fix the lower disk assembly to the top of the motor shaft through a fixing part. Preferably, the motor shaft is directly inserted into the fixing section of the fixing hole, and the fixing part is set in the limiting section and fixedly connected to the motor shaft. The fixing part or the motor shaft passes through the retaining rib, and the retaining rib is axially displaceable between the motor shaft and the fixing part. The fixed fit between the fixing part and the motor shaft can reliably control the axial displacement of the active disk assembly, so that the active disk assembly and the cup body or the driven disk fit more stably and reliably. The motor shaft inserted into the fixing hole and the active disk assembly have a stable fit, so that the active disk assembly can move axially and rely on the motor shaft to rotate, thereby achieving stable output of the power assembly without adding accessories to the power assembly.

[0026] 10. An elastic member is provided to push the active disk assembly from the moved position to the initial position. Depending on the functional requirements of the power assembly, the elastic member can be provided in different positions to position the active disk assembly in different initial positions relative to the motor. For example, when the elastic member pushes the retaining rib to abut the motor shaft, the active disk assembly has a displacement in a direction away from the motor, and can move away from the motor and approach the cup or driven disk under the magnetic attraction of the driven disk; when the retaining rib abuts the fixing member, the active disk assembly has a displacement in a direction toward the motor, and under the pressure of the cup or driven disk, the active disk assembly moves toward the motor and remains in a position close to the cup or driven disk; when the retaining rib is clamped between the elastic member, the active disk assembly has a displacement in a direction away from or toward the motor. The active disk assembly meets both of the aforementioned installation requirements. At the same time, the active disk assembly is suspended relative to the motor, which can better cut off the transmission of vibration between the active disk assembly and the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an exploded schematic diagram of an active disk assembly with stable operation according to the present invention.

[0028] Figure 2 This is a schematic exploded view of a stable working power assembly described in the present invention.

[0029] Figure 3 This is a cross-sectional view of an active disk assembly with stable operation according to the present invention.

[0030] Figure 4 This is a cross-sectional view of the cooperation between a stable active disk assembly and a motor shaft as described in the practical trapezoid.

[0031] Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle A.

[0032] Figure 6 for Figure 4 A partial enlarged schematic diagram of B in the figure.

[0033] Figure 7 This is a cross-sectional view of a second embodiment of a stable power assembly described in this practical trapezoid.

[0034] Figure 8 for Figure 7 A partial enlarged schematic diagram of C in the middle.

[0035] The corresponding names in the figure are as follows:

[0036] 001. Active disk assembly; 002. Motor; 1. Disk body; 11. Disk shaft; 12. Disk body; 13. Mounting cavity; 14. Mounting hole; 141. Mounting countersunk hole; 15. Fixing hole; 151. Limiting section; 152. Retaining rib; 153. Fixing section; 2. Cover plate; 3. Bearing; 31. Outer ring; 32. Inner ring; 33. Ball; 4. Abutment; 41. Fixing column; 411. Buckle; 42. Abutment joint; 421. Abutment rib; 5. Motor shaft; 51. Power section; 52. Flat drive section; 53. Shaft fixing section; 54. Screw hole; 6. Permanent magnet; 7. Screw; 71. Screw head; 8. Spring. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0039] In addition, in the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on this invention. Terms such as "upstream" and "downstream" are based on positional relationships during normal fluid flow.

[0040] Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0041] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] Food processors such as blenders, food processors, and soymilk makers typically rely on motors to drive the pulverizer, which collides and cuts the food contained within the cup. Current blenders typically operate at motor speeds exceeding 10,000 rpm. This creates discontinuous, random impacts between the pulverizer and the food, generating vibration and noise. This vibration is then transmitted back to the motor and base, causing significant vibration and noise during operation.

[0044] Using a non-contact magnetic transmission method to achieve power transmission between the motor and the pulverizer can sever the mechanical connection between the motor and the pulverizer, preventing the vibration and impact of the pulverizer from affecting the motor. However, the magnetic force between the non-contact active and passive magnetic disks is significantly affected by the distance between them. If the distance between the two increases uncontrollably, the motor's power will not be effectively transmitted to the pulverizer, significantly affecting power transmission efficiency. Although the magnetic force is greatest when the active and passive magnetic disks are directly engaged, and power transmission efficiency is highest, this method defeats the primary purpose of non-contact transmission.

[0045] Therefore, there is an urgent need for a transmission solution that can ensure that the distance between the active disk assembly and the driven disk is small enough without causing direct contact between the active disk assembly and the driven disk. This is an urgent need for non-contact magnetic transmission. Therefore, the present application provides an active disk assembly with stable operation, including a disk body and a permanent magnet arranged on the disk body, the permanent magnet can be attracted to the magnet of the matching driven disk, and can drive the driven disk to work when the active disk assembly rotates. The active disk assembly also includes a bearing arranged at the rotation center of the disk body, and the bearing includes a first rotating part and a second rotating part that rotate relative to each other, wherein the first rotating part is fixedly connected to the disk body so as to rotate together with the disk body when the disk body and the permanent magnet rotate, and the second rotating part protrudes from the disk body and constitutes the upper end surface of the active disk assembly. It should be noted that here it means that when the upper end surface of the active disk assembly contacts the outside, such as the bottom surface of the cup body, the second rotating part constituting the upper end surface of the active disk assembly contacts the bottom surface of the cup body, thereby, when the disk body and the permanent magnet rotate during operation, the second rotating part will be relatively stationary together with the cup body. At the same time, because the second rotating portion protrudes from the disk, there is no direct contact between the disk and the cup. Therefore, when the disk drives the permanent magnet to rotate, it does not rub against the bottom of the cup. The bearing is used to support the relative rotation between the active disk assembly and the cup or the driven disk. The active and driven disks can be attracted to each other by clamping the cup without contact. This ensures that the active disk assembly maintains a sufficiently close distance from the driven disk while preventing the transmission of vibration and noise due to direct contact between the two.

[0046] Based on the above-mentioned active disk assembly, the present application also provides a stable working power assembly, including a motor and the above-mentioned active disk assembly, the active disk assembly is installed at the upper end of the motor shaft of the motor, and the active disk assembly has a moving gap in the axial direction of the motor shaft, that is, the active disk assembly installed on the motor shaft is not completely locked with the motor shaft, but has a displacement in the axial direction of the motor shaft. When the active disk assembly is subjected to external force, the active disk assembly can be displaced along the axial direction of the motor shaft to adapt to different power transmission position requirements. Based on the bearing arrangement of the active disk assembly, since the active disk assembly can directly contact the cup bottom or the driven disk, and there is no friction between the active disk assembly and the cup bottom or the driven disk, the active disk assembly can be arranged close to the cup bottom in product applications. However, for different products, the height at which the active disk assembly is installed on the motor varies, which makes the distance between the active disk assembly and the cup bottom uncontrollable. Therefore, the active disk assembly is provided with a movable gap in the axial direction of the motor shaft. When the power assembly is assembled in the food processing machine, the cup body or the driven disk can be used to absorb or compress the active disk assembly, so that the active disk assembly is better fitted with the cup body or the driven disk, ensuring that the distance between the active disk assembly and the driven disk is at a controllable minimum, and ultimately ensuring stable and reliable power transmission between the active disk assembly and the driven disk.

[0047] Specifically, such as Figure 1-8As shown, the present application provides an active disk assembly and a power assembly with stable operation. The active disk assembly 001 includes a disk body 1 and a permanent magnet 6 arranged on the disk body 1. A bearing 3 is provided at the rotation center of the disk body 1. The bearing 3 includes a first rotating part and a second rotating part that rotate relative to each other. The first rotating part is fixedly connected to the disk body 1, and the second rotating part protrudes from the disk body 1 and constitutes the upper end surface of the active disk assembly 001. Therefore, when the active disk assembly 001 is in contact with the cup body or the driven disk, the second rotating part is in contact with the cup body or the driven disk, and when the disk body 1 and the first rotating part rotate inward, the first rotating part and the second rotating part rotate relative to each other. For different bearings, the first rotating part and the second rotating part have different structural positions, for example, they can be relative inner and outer rings, or relative lower and upper parts, etc. The power assembly of the present application includes a motor 002, and an active disk assembly 001 mounted on the upper end of the motor shaft 5 of the motor 002. Furthermore, the active disk assembly 001 has clearance along the axial direction of the motor shaft 5. When subjected to an external force, the active disk assembly 001 can move along the axial direction of the motor shaft 5 to approach the cup body or driven disk for efficient power transmission, or separate from the cup body or driven disk and return to its starting position. Bearings are used to support relative rotation between the active disk assembly and the cup body or driven disk, allowing the active disk assembly to rotate stably and reliably while in close proximity to the cup body or driven disk. Furthermore, the active disk assembly is axially displaceable along the motor shaft. When the motor assembly is installed in a food processor, it can better mate with the cup body or driven disk. Ultimately, the distance between the active disk assembly and the driven disk is shortened, operation is stable and reliable, and more efficient power transmission is achieved.

[0048] As a stable active disk component described in the present invention, Figure 1-5 As shown, the active magnetic disk assembly 001 includes a disk body 1 and a bearing 3. The disk body 1 includes a disk shaft 11 and a disk body 12. The disk body 12 is flat, disk-shaped, and typically has a larger radial diameter. The disk body 12 is provided with a mounting cavity 13 and a mounting hole 14. The mounting cavity 13 houses a permanent magnet 6, and the mounting hole 14 houses the bearing 3. The active magnetic disk assembly 001 also includes a cover plate 2, which is disposed at the upper end of the disk body 12 to shield and seal the mounting cavity 13, preventing direct contact between the permanent magnet 6 and the outside.

[0049] The mounting hole 14 is located at the rotation center of the disk body 1 so that the bearing 3 is located at the rotation center of the active disk assembly. The mounting cavity 13 surrounds the outer periphery of the mounting hole 14 so that the permanent magnet 6 surrounds the outer periphery of the bearing 3. At the same time, the permanent magnet 6 at least partially overlaps the bearing 3 in the axial direction. The disk body is set to be a flat disk, and the permanent magnet surrounds the outer periphery of the bearing. The mounting cavity 13 has a larger diameter and circumference, which allows the installation of larger permanent magnets, thereby improving the magnetic properties of the active disk assembly. The permanent magnets are usually arranged with their poles attracted to the corresponding driven disks, that is, the magnetism of the permanent magnets is usually distributed axially. The permanent magnets and the bearings partially overlap in the axial direction, which can prevent the permanent magnets from attracting the bearings when the magnetic poles of the permanent magnets are directly opposite the bearings, thereby affecting the normal operation of the bearings.

[0050] The bearing 3 includes a first rotating portion and a second rotating portion. The bearing can be a ball bearing, a deep groove ball bearing, a planar thrust bearing, or the like. Thus, the first and second rotating portions have different rotating parts depending on the bearing. In this embodiment, the bearing 3 is a ball bearing. Thus, the bearing 3 includes an outer ring 31, an inner ring 32, and balls 33. The outer ring serves as the first rotating portion and is fixed within the mounting hole 14. The inner ring 32 serves as the second rotating portion. The balls 33 are disposed between the outer ring 31 and the inner ring 32. When the outer ring 31 rotates with the disk body 1, the inner ring 32 remains relatively stationary, and the balls 33 rotate between the outer ring 31 and the inner ring 32.

[0051] Preferably, the second rotating part also includes an abutment 4 installed on the inner ring 32. When the bearing 3 and the abutment 4 are fixed in the mounting hole 14, the upper end face of the abutment 4 protrudes from the upper end face of the disk body 1. The upper end face of the abutment 4 constitutes the upper end face of the active magnetic disk assembly 001. When the active magnetic disk assembly 001 is in contact with the cup body or the driven magnetic disk, the abutment 4 contacts the cup body or the driven magnetic disk, and when the disk body 1 rotates, the disk body 1 and the inner ring 32 and the abutment 4 rotate relative to each other to avoid mutual friction when the disk body 1 directly rotates relative to the cup body or the driven magnetic disk. The abutment member 4 can be used to abut against the cup body or driven disk to withstand the pressure and relative rotation between the active disk assembly and the cup body or driven disk. The abutment member can also be increased in height above the upper end surface of the disk body by re-addition after assembly to ensure that the distance between the permanent magnet in the disk body and the magnet of the driven disk is both small and reliable. The abutment member 4 can also be configured with a material such as plastic to avoid the impact and excessive noise caused by hard contact between metal bearings and the cup body or driven disk. When the abutment member 4 becomes worn, it can be easily replaced. This convenient and low-cost replacement takes advantage of the low-cost lifecycle maintenance of the active disk assembly, especially the food processing machine using the active disk assembly.

[0052] The abutment member 4 includes a fixing post 41 and an abutment head 42. The fixing post 41 is disposed below the abutment head 42. A buckle 411 is provided at the bottom of the fixing post 41. The fixing post 41 is inserted into the central through-hole of the inner ring 32 and engages with the inner ring 32 using the buckle 411. An abutment rib 421 is also provided on the upper end surface of the abutment head 42. The abutment member 4 is preferably configured as a rotating body, that is, the protruding portion of the abutment member 4 remains the same regardless of the direction from which the abutment member 4 is secured to the inner ring 32. Of course, since a slot is required at the bottom of the fixing post 41 to facilitate insertion of the buckle 411 and the fixing post 41 into the inner ring, the slotting of the fixing post 41 does not affect the configuration of the abutment member 4, especially the rotating body of the abutment head 42. The abutment joint 42 is mounted on the disk body 1 via the bearing 3, and the upper end surface of the abutment rib 421 of the abutment joint 42 constitutes the upper end surface of the active disk assembly, so that the abutment rib 421 fits in contact with the cup body or the driven disk. In addition to the aforementioned mutual abutment effect, the abutment rib 421 can also appropriately reduce the area of ​​direct contact with the cup body or the driven disk. The annular arrangement of the abutment rib 421 can improve the stability and reliability of the abutment with the cup body or the driven disk. When the abutment member is subjected to excessive pressure, the abutment rib 421 can also ensure the stability and reliability of the abutment member through appropriate deformation.

[0053] The abutment 42 can axially block the inner ring 32. Preferably, the bearing 3 is completely installed in the mounting hole 14, and the outer diameter of the bearing 3 is the same as the inner diameter of the mounting hole 14, so that the bearing 3 can be easily fixed in the mounting hole 14. The abutment 42 is at least partially located in the mounting hole 14, and the outer diameter of the abutment 42 is smaller than the inner diameter of the mounting hole 14, thereby preventing contact and friction between the abutment and the disk when the disk and outer ring rotate. The abutment 42 can completely block the inner ring 32 in the axial direction. Preferably, the abutment 42 also completely blocks the ball bearings 33 and partially blocks the outer ring 31. In this way, the abutment 42 at least partially blocks the mounting hole 14 to block the bearing 3, preventing external dust or impurities from entering the bearing 3 and affecting the normal operation of the bearing 3.

[0054] A mounting countersunk hole 141 extends downward from the bottom surface of the mounting hole 14. Due to the different heights of the outer ring 31 and the inner ring 32, the step formed by the mounting countersunk hole 141 abuts against the outer ring 31, leaving the inner ring 32 suspended in the air. This prevents direct contact between the inner ring 32 and the disc body, which could affect the relative rotation of the inner ring 32 and the outer ring 31. Of course, if the bearing is configured as a planar thrust bearing with upper and lower clamping, the mounting countersunk hole 141 can be omitted.

[0055] A bearing is directly arranged at the rotation center of the active disk assembly. When the active disk assembly is installed on a food processing machine and is used to drive a corresponding driven disk, the active disk assembly can be directly fitted with the cup body or the driven disk, and the bearing is clamped between the active disk assembly and the cup body or the driven disk to withstand the relative rotation of the active disk assembly and the cup body or the driven disk. Under the premise of ensuring the distance between the active disk assembly and the driven disk, that is, the magnetic force between the two, vibration and friction caused by the relative rotation between the two are avoided, thereby finally enabling the active disk assembly to output power stably and reliably.

[0056] It is understandable that the bearing may also be directly fixed to the upper end surface of the disc body without providing the mounting hole.

[0057] It is understood that the inner ring of the bearing directly abuts against the cup body or the driven disk without the abutment member. Alternatively, the bearing is a planar thrust bearing clamped from top to bottom, and the upper portion of the planar thrust bearing directly abuts against the cup body or the driven disk without the abutment member.

[0058] It can be understood that the top of the mounting hole is also provided with a step hole, the bearing is arranged in the lower part of the step hole, and the main part of the abutment head is located in the upper part of the step hole, so that the mounting hole completely covers the bearing.

[0059] It can be understood that the abutment member can be directly provided with a fixing column connected to the inner ring, and the upper end of the fixing column protrudes from the upper end surface of the disk body and constitutes the upper end surface of the active magnetic disk assembly.

[0060] It can be understood that the active disk assembly also includes a top cover that closes the mounting hole, the top cover covers the mounting hole and the bearing, the top end has a through hole for the abutment to extend into, the lower end of the abutment is fixedly connected to the inner ring, and the upper end protrudes from the upper end surface of the disk body and constitutes the upper end surface of the active disk assembly, the abutment does not contact the top cover and rotates relative to it.

[0061] It can be understood that the permanent magnet can be configured as an annular integral piece and directly disposed on the outer periphery of the disk body to constitute a part of the active magnetic disk assembly, and the bearing is located at the rotation center around the permanent magnet.

[0062] As a stable working power component described in the present invention, Figure 2-6 As shown, the power assembly includes a motor 002 and an active disk assembly 001 arranged at the upper end of the motor shaft 5 of the motor 002, wherein the active disk assembly 001 adopts the above-mentioned technical solution.

[0063] The motor shaft 5 includes a power section 51, a flat drive section 52, and a shaft fixing section 53 from bottom to top, wherein the motor shaft 5 is fixedly connected to the rotor of the motor 002 through the power section 51, and the flat drive 52 is formed by cutting the motor shaft 5 on one side or on two opposite sides, so that the cross-section of the flat drive section 52 is D-shaped or drum-shaped (i.e., circular on both sides and parallel up and down), and the active disk assembly 001 is provided with a shape compatible with the flat drive section 52, so that the motor shaft 5 drives the active disk assembly 001 through the flat drive section 52.

[0064] The rotation center of the active magnetic disk assembly 001 is provided with a fixing hole 15. Preferably, the fixing hole 15 is located at the rotation center of the disk shaft 11 of the disk body 1. In this way, the disk shaft 11 of the disk body 1 is connected to the motor, and the disk body 12 of the disk body 1 is used to mount the permanent magnets and bearings, thereby driving the driven magnetic disk. Of course, the disk body 1 can also adopt a structure with an upper and lower integrated structure, with a fixing hole provided at the rotation center, and no obvious distinction between the disk body and the disk shaft.

[0065] The inner wall of the fixing hole 15 is provided with a retaining rib 152, and the retaining rib 152 divides the fixing hole 15 into a limiting section 151 located at the upper section of the retaining rib 152 and a fixing section 153 located at the lower section of the retaining rib 152. The motor shaft 5 is inserted into the fixing section 153, and a screw hole 54 is provided at the top of the motor shaft 5. A screw 7 is provided at the screw hole 54. The screw head 71 of the screw 7 and the flat drive section 52 clamp the retaining rib 152 in the middle, and the distance between the screw head 71 and the flat drive section 52 is greater than the thickness of the retaining rib 152, so that the active disk assembly 001 has a moving gap in the axial direction of the motor shaft 5. That is, when the retaining rib 152 is in direct contact with the flat drive section 52, there is a gap between the retaining rib 152 and the screw head 71, so that the active disk assembly 001 can move upward in the axial direction to the screw head 71. Accordingly, the active disk assembly 001 can also move downward from the screw head 71 to the flattened drive section 52. Of course, the retaining rib 152 can also directly act on the upper end of the power section 51, allowing the flattened drive section 52 to pass through the through hole of the retaining rib 152, so that the flattened drive section 52 and the shaft fixing section 53 together form the axial displacement path of the active disk assembly.

[0066] The power assembly further includes an elastic member, preferably a spring 8 sleeved around the motor shaft 5. The two ends of the spring 8 abut against the screw head 71 and the retaining rib 152, respectively, to push the retaining rib 152 into contact with the flat drive section 52. When the power assembly is not subjected to an external force, the active disk assembly 001 is axially located at the bottom of the space. When the power assembly is subjected to an external upward force, such as when the power assembly is installed in a food processor and the magnet of the driven disk attracts the active disk assembly, the active disk assembly overcomes the force of the spring 8 and moves upward. Within the displacement range defined by the screw head 71, if the active disk assembly has already contacted the cup or the driven disk, it remains in the contact position and maintains this position, achieving stable and reliable power output. If the active disk assembly abuts the screw head 71 but still does not contact the cup or the driven disk assembly, it remains at the top of the displacement range. Of course, due to the structural limitations of the spring itself, when the retaining rib 152 moves upward to its maximum position, the spring is completely compressed between the retaining rib and the screw head, preventing direct contact between the retaining rib and the screw head. Preferably, a step for accommodating the spring can be provided on the inner side of the retaining rib 152, so that the spring is compressed at the step of the retaining rib, allowing the retaining rib to directly contact the screw head.

[0067] The active magnetic disk assembly is provided with a movable gap in the axial direction of the motor shaft. Under the action of the cup body or driven magnetic disk, the active magnetic disk assembly can be axially displaced to fully fit the cup body or driven magnetic disk. This prevents the distance between the active magnetic disk assembly and the driven magnetic disk from being uncontrollable due to installation errors of the food processor, ensuring that the active magnetic disk assembly and the driven magnetic disk are always at a preset distance, thereby ensuring stable and reliable magnetic force between the active magnetic disk assembly and the driven magnetic disk, thereby improving the efficiency of power transmission. An elastic member is further provided to ensure that the active magnetic disk assembly can promptly return to the preset position after the external force is removed, so that the power assembly can maintain a stable and reliable position whether in operation or in non-operation without external force.

[0068] It is understandable that the screw can be located in the mounting hole, the screw head of the screw abuts against the bottom surface of the mounting hole, and the bottom end of the fixing hole abuts against the motor shaft, so that the active disk assembly does not have the retaining rib.

[0069] As another embodiment of the stable working power assembly of the present invention, Figure 7 、 Figure 8 As shown, the main difference from the previous embodiment is that the spring is clamped between the retaining rib and the motor shaft, and pushes the retaining rib to directly contact the screw head without the action of external force.

[0070] like Figure 7-8 As shown, the spring 8 is mounted on the exterior of the motor shaft 5 and is clamped between the flat drive section 52 and the retaining rib 152. When the active magnetic disk assembly is free of external force, the spring 8 pushes the retaining rib 152 into contact with the screw head 71, thereby positioning the active magnetic disk assembly at the uppermost end of the motor shaft's axial clearance. When the power assembly is installed on the food processor and the active magnetic disk assembly is subjected to external pressure, the active magnetic disk assembly compresses the spring and moves downward. When an external force, such as a cup body, is installed, the active magnetic disk assembly reaches this displaced position, and the spring pushes the active magnetic disk assembly and the cup body into close contact, fully ensuring that the distance between the active magnetic disk assembly and the driven magnetic disk is at a predetermined minimum, thereby ensuring that the magnetic force between the active magnetic disk assembly and the driven magnetic disk is at a predetermined maximum. Since the cup body first contacts the active disk assembly during installation and then reaches the installation position, the active disk assembly can be set to have a larger axial movement gap. For different cup bodies, the active disk assembly and the bottom of the cup body can maintain a better fit during the installation process, and the cup body can be properly installed in place.

[0071] It can be understood that the elastic member can also be set to two, for example, two springs are set, and the two springs are respectively located on the upper and lower sides of the retaining rib. The two springs push the retaining rib and at the same time have a moving gap between the screw head and the motor shaft. Therefore, for different food processing machines, the active disk assembly can move upward under the action of external force, and can also move downward under the action of external force, and has a wider range of applications.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made based on the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. An active magnetic disk assembly with stable operation, comprising a disk body and a permanent magnet disposed on the disk body, characterized in that: It also includes a bearing arranged at the rotation center of the disk body, the bearing including a first rotating part and a second rotating part that rotate relative to each other, the first rotating part is fixedly connected to the disk body, and the second rotating part protrudes from the disk body and constitutes the upper end surface of the active magnetic disk assembly.

2. The stable active disk assembly according to claim 1, wherein: The rotation center of the disc body is provided with a mounting hole for accommodating the bearing.

3. The stable active disk assembly according to claim 1, wherein: The second rotating part includes an inner ring and an abutment member installed on the inner ring, and the abutment member protrudes from the disc body.

4. The stable active disk assembly according to claim 3, wherein: The abutment member includes a fixing post and an abutment head. The fixing post is clamped in the center hole of the inner ring, and the abutment head blocks the inner ring in the axial direction.

5. The stable active disk assembly according to claim 4, characterized in that: The abutment joint is a rotating body concentric with the rotation center of the inner ring, and an annular abutment rib is further provided on the upper end surface of the abutment joint.

6. The stable active disk assembly according to claim 1, wherein: The disk body is provided with an installation cavity for accommodating the permanent magnet, the installation cavity surrounds the outer periphery of the bearing, and the permanent magnet at least partially overlaps with the bearing in the axial direction.

7. The stable active disk assembly according to claim 6, wherein: The installation cavity is located on the upper end surface of the disk body, and the disk body includes a cover plate that closes the upper opening of the installation cavity.

8. A stable working power assembly, characterized in that: The invention comprises a motor and an active disk assembly according to any one of claims 1 to 7, wherein the active disk assembly is mounted on the upper end of a motor shaft of the motor, and the active disk assembly has a moving gap in the axial direction of the motor shaft.

9. The stable working power assembly according to claim 8, characterized in that: A fixing hole is provided at the center of the disk body, and a retaining rib extending toward the center of the fixing hole is provided on the inner wall of the fixing hole. The retaining rib divides the fixing hole into a fixing section and a limiting section. The motor shaft is inserted into the fixing section. A fixing piece connected to the motor shaft is provided in the limiting section, and the retaining rib moves axially between the motor shaft and the fixing piece.

10. The stable working power assembly according to claim 9, characterized in that: The power assembly further includes an elastic member, which pushes the retaining rib to abut against the motor shaft; Alternatively, the power assembly further comprises an elastic member, and the elastic member pushes the retaining rib to abut against the fixing member; Alternatively, the power assembly further includes elastic members, and the retaining ribs are axially clamped between the elastic members, so that the retaining ribs are axially located between the retaining ribs and the motor shaft.

Images