Ultrathin motor driving structure and stirring cup

Abstract

According to the ultrathin motor driving structure and the stirring cup, due to the fact that the ultrathin motor driving structure rotates through the rotor magnet, and the rotor magnet can also be applied by adopting a two-pole magnet. In the using process, the center of the stirrer is located at the center of the rotor magnet, so that the stirrer rotates around the circle center of the stirrer all the time in the stirring process, and eccentric rotation is avoided. The rotor magnet is directly arranged in the ultrathin motor driving structure, so that the ultrathin motor driving structure is thinner. In the installation process, the penetrating face of the ultrathin motor driving structure is directly attached to the bottom of the stirring cup for installation, alignment or adjustment of the distance between the rotor magnet and the bottom of the stirring cup is not needed, and therefore the assembly efficiency is higher, and the assembly time is shortened. The influence on the production efficiency due to alignment or guarantee of the mounting distance between the rotor magnet and the bottom of the stirring cup is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of stirring cups, and in particular to an ultra-thin motor drive structure and a stirring cup. Background Art

[0002] Traditionally, a mixing cup is manually stirred by a stirring rod to mix the substances in the mixing cup to achieve the effect of accelerating dissolution or stirring evenly. However, this stirring method requires manual stirring and is very inefficient.

[0003] The magnetic stirring cup previously applied for by the applicant (CN220159808U) is equipped with a driving motor at the bottom of the stirring cup and a driving magnet at the output end outside the driving motor. The driving motor drives the driving magnet to rotate, thereby driving the stirring rod inside the stirring cup to rotate, so as to stir the substances in the cup body and mix them fully together, thereby avoiding the problem of low efficiency of manual stirring.

[0004] However, when the driving magnet is arranged outside the driving motor, it is necessary to ensure the rotation space of the driving magnet during the installation process, so the driving magnet maintains a certain distance from the inner wall of the installation space. This makes the bottom thickness of the blender cup very thick and part of the internal volume of the blender cup needs to be sacrificed, resulting in very limited usage size and installation size.

[0005] At the same time, during installation, it is necessary to ensure the rotation space of the driving magnet to avoid collision between the driving magnet and the inner wall of the rotation space. Therefore, precise assembly is required during the assembly process, resulting in very low installation efficiency.

[0006] The applicant conducted secondary research and development. In the prior application (CN116865515B magnetic output motor and magnetic stirring container using the motor), the rotor magnet was set in the driving motor and the rotor magnet was installed on the rotor, so that the driving motor and the rotor magnet are integrated, so that the rotor magnet is hidden inside the driving motor to reduce the height of the entire driving structure, which not only reduces the thickness of the installation space at the bottom of the stirring cup, but also avoids the rotor magnet from being interfered by the magnetism in the installation space. At the same time, during the installation process, the assembly can be completed by simply fitting the entire driving motor to the bottom of the stirring cup, without reserving a distance between the rotor magnet and the inner wall of the installation space.

[0007] However, the magnetic output motor is driven by a brushless motor, and is coupled to the stirring bar in the stirring cup through the rotor magnet of the brushless motor. Part of the magnetism of the rotor magnet acts on the stator coil on the brushless motor, and the other part acts on the stirring bar in the stirring cup, so that the rotor magnet of the brushless motor needs to have at least 4 poles to be used. However, in the process of driving with magnets with more than 4 poles, the stirring bar will be adsorbed to one side under the influence of the magnetic field of the 4-pole magnet, and the center of the stirring bar will not be located on the axis of the stirring cup, resulting in poor stirring effect during the stirring process.

[0008] Secondly, since the magnetic output motor is driven by a brushless motor, during the process of stirring milk tea or coffee, since milk tea powder and coffee particles will exist at the bottom of the stirring cup, the brushless drive structure will drive the stirring bar to start strongly, which is prone to jamming due to insufficient power, thus affecting use.

[0009] At the same time, during the braking process, since the brushless motor is driven by an alternating magnetic field, suddenly applying a reverse current is not enough to stop the rotor magnet, resulting in low control accuracy and cannot be used in some control fields that require high precision. Summary of the invention

[0010] The present invention provides an ultra-thin motor drive structure and a stirring cup to solve the above technical problems.

[0011] To achieve the above object, the present invention provides an ultra-thin motor drive structure and a stirring cup comprising:

[0012] A shell body, an accommodating cavity is formed inside, and a penetrating surface is provided on one side of the shell body;

[0013] A stator magnet is disposed in the accommodating cavity;

[0014] A rotor coil assembly is disposed in the accommodating cavity, and the stator magnet is disposed around the rotor coil assembly;

[0015] A rotor magnet is disposed on the rotor coil assembly and is disposed toward the penetration surface;

[0016] The rotor coil assembly rotates to drive the rotor magnet to rotate, and the magnetic field of the rotor magnet penetrates the penetration surface and couples with the stirrer in the stirring cup to drive the stirrer to rotate in the stirring cup.

[0017] Preferably, the rotor coil assembly comprises:

[0018] A central axis, rotatably disposed in the accommodating cavity;

[0019] A coil assembly, wherein the central axis passes through the coil assembly, and the coil assembly is mounted on the central axis;

[0020] The rotor magnet is in contact with a side of the coil assembly close to the penetration surface.

[0021] Preferably, the ultra-thin motor drive structure further includes:

[0022] The first magnetic yoke is installed between the rotor magnet and the rotor coil assembly, and divides the accommodating cavity into a first space and a second space isolated from the first space. The rotor magnet and the penetration surface are located in the first space, and the stator magnet and the coil assembly are located in the second space.

[0023] Preferably, in the length direction of the central axis, the projection area of ​​the first magnetic yoke completely covers the projection area of ​​the stator magnet.

[0024] Preferably, the ultra-thin motor drive structure further includes:

[0025] The second magnetic yoke is disposed around the stator magnet and forms the second space between the second magnetic yoke and the first magnetic yoke.

[0026] Preferably, the rotor magnet has at least two poles.

[0027] Preferably, the rotor magnet is arranged in an integrated manner or in a split manner.

[0028] Preferably, the ultra-thin motor drive structure further includes:

[0029] A first bearing mounted on the penetration surface;

[0030] A second bearing is mounted on an inner wall of the accommodating cavity away from the penetration surface;

[0031] Both ends of the central shaft are rotatably connected to the first bearing and the second bearing respectively, and the first bearing and the second bearing are both located on the central axis of the housing.

[0032] Preferably, the coil assembly comprises:

[0033] Silicon steel sheet, installed on the central shaft;

[0034] An induction coil is wound on the silicon steel sheet;

[0035] The rotor coil assembly further comprises:

[0036] The carbon brush is arranged in the accommodating cavity and abuts against the central axis.

[0037] A stirring cup, comprising the ultra-thin motor drive structure as described in any one of the above;

[0038] The mixing cup comprises:

[0039] A cup body, with a liquid cavity formed inside, a mounting groove is provided at the bottom of the cup body, and two ends of the ultra-thin motor drive structure are respectively attached to the bottom wall and the top wall of the mounting groove;

[0040] The stirring rod is arranged in the liquid chamber and is coupled with the rotor magnet of the ultra-thin motor driving structure.

[0041] The ultra-thin motor drive structure and stirring cup proposed by the present invention have the following beneficial effects:

[0042] 1. The ultra-thin motor drive structure and stirring cup proposed by the present invention are rotated by the rotor magnet, and the rotor magnet can also be used as a two-pole magnet. During use, the center of the stirring rod is located on the center of the rotor magnet, so that the stirring rod always rotates around the center of the stirring rod during stirring, and no eccentric rotation occurs.

[0043] 2. Since the ultra-thin motor drive structure adopts a brushed motor structure for driving, it can be strongly started instantly during use, avoiding the occurrence of jamming due to insufficient power.

[0044] 3. By directly placing the rotor magnet inside the ultra-thin motor drive structure, the ultra-thin motor drive structure is made thinner. During the installation process, the penetration surface of the ultra-thin motor drive structure can be directly attached to the bottom of the mixing cup for installation, without the need to align or adjust the distance between the rotor magnet and the bottom of the mixing cup, thereby making the assembly more efficient and avoiding the need to align or ensure the installation distance between the rotor magnet and the bottom of the mixing cup, which affects the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of the ultra-thin motor driving structure of the present invention;

[0046] Figure 2 An exploded view of the ultra-thin motor drive structure of the present invention;

[0047] Figure 3 for Figure 2 Schematic diagram of the structure of the middle rotor coil assembly;

[0048] Figure 4 for Figure 1 A cross-sectional view of the ultra-thin motor drive structure;

[0049] Figure 5 It is a schematic diagram of the structure of the mixing cup;

[0050] Figure 6is a structural diagram of an embodiment of a rotor magnet;

[0051] Figure 7 is a structural diagram of another embodiment of a rotor magnet;

[0052] Figure 8 is a structural diagram of yet another embodiment of a rotor magnet;

[0053] Fig. 9 Schematic diagram of the magnetic field coupling between the rotor magnet and the stirring bar;

[0054] Fig.10 Schematic diagram of the magnetic field coupling between the rotor magnet (split configuration) and the stirrer in another embodiment.

[0055] In the figure:

[0056] 100. Ultra-thin motor drive structure;

[0057] 110, housing; 110a, accommodating cavity; 110b, penetrating surface; 110c, first space; 110d, second space;

[0058] 120. stator magnet;

[0059] 130, rotor coil assembly; 131, middle shaft; 132, coil assembly; 1321, silicon steel sheet; 1322, induction coil; 133, carbon brush;

[0060] 140. Rotor magnet;

[0061] 150. a first magnetic yoke;

[0062] 160, second magnetic yoke;

[0063] 170, first bearing;

[0064] 180, second bearing;

[0065] 190, stirring cup; 191, cup body; 191a, liquid chamber; 191b, mounting groove;

[0066] 200. Stirring bar.

[0067] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0068] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0069] It should be noted that in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0070] The present invention provides an ultra-thin motor driving structure 100, comprising:

[0071] The housing 110 has a receiving cavity 110a formed therein, and a penetrating surface 110b is provided on one side of the housing 110;

[0072] The stator magnet 120 is disposed in the accommodating cavity 110a;

[0073] The rotor coil assembly 130 is disposed in the accommodating cavity 110a, and the stator magnet 120 is disposed around the rotor coil assembly 130;

[0074] The rotor magnet 140 is disposed on the rotor coil assembly 130 and is disposed toward the penetration surface 110b;

[0075] The rotor coil assembly 130 rotates to drive the rotor magnet 140 to rotate. The magnetic field of the rotor magnet 140 penetrates the penetration surface 110 b and couples with the stirrer in the stirring cup 190 to drive the stirrer to rotate in the stirring cup 190 .

[0076] Please refer to Figure 1-Figure 10 In this embodiment, the rotor coil assembly 130 generates magnetic force when powered on. Under the influence of the magnetic field of the stator magnet 120, the rotor coil assembly 130 rotates around its axis. Since the rotor magnet 140 is arranged on the rotor coil assembly 130, the rotor coil assembly 130 drives the rotor magnet 140 to rotate. The magnetic flux of the rotor magnet 140 penetrates the penetration surface 110b and couples with the stirrer. The rotor magnet 140 is coupled with the stirrer in the stirring cup 190. When the rotor magnet 140 rotates, it drives the stirrer in the stirring cup 190 to rotate, thereby stirring the material in the stirring cup 190.

[0077] Since the ultra-thin motor drive structure 100 is rotated by the rotor magnet 140, the rotor magnet 140 can also be used as a two-pole magnet. During use, the center of the stirrer is located on the center of the rotor magnet 140, so that the stirrer always rotates around the center of the stirrer during the stirring process without eccentric rotation.

[0078] At the same time, since the ultra-thin motor driving structure 100 is driven by a brushed motor structure, it can be strongly started instantly during use to avoid jamming due to insufficient power.

[0079] Secondly, since the rotor magnet 140 is directly disposed inside the ultra-thin motor drive structure 100, the ultra-thin motor drive structure 100 is made thinner. During the installation process, the penetration surface 110b of the ultra-thin motor drive structure 100 can be directly attached to the bottom of the stirring cup 190 for installation, without the need to align or adjust the distance between the rotor magnet 140 and the bottom of the stirring cup 190, thereby making the assembly more efficient and avoiding the need to align or ensure the installation distance between the rotor magnet 140 and the bottom of the stirring cup 190, which affects the production efficiency.

[0080] It should be noted that the shell 110 is roughly cylindrical and hollow inside. The penetration surface 110b is an end surface of the shell 110 close to the stirrer and is made of non-magnetic material such as plastic. The accommodating cavity 110a is a circular cavity inside the shell 110.

[0081] The stator magnet 120 is a ring-shaped magnet or a ring-shaped magnet formed by surrounding a plurality of arc-shaped magnets.

[0082] The rotor magnet 140 can be a two-pole magnet, a four-pole magnet or a multi-pole magnet. The shape of the rotor magnet 140 can be linear, circular, annular, square, etc., including but not limited to the above shapes. In this embodiment, an annular ring is used. In this embodiment, a two-pole magnet is used. In other embodiments, two or more magnets can be separately set to form a ring or a symmetrical setting formed by multiple magnets.

[0083] Preferably, the rotor coil assembly 130 comprises:

[0084] The central axis 131 is rotatably disposed in the accommodating cavity 110a;

[0085] The coil assembly 132, the central axis 131 passes through the coil assembly 132, and the coil assembly 132 is installed on the central axis 131;

[0086] The rotor magnet 140 is in contact with a side of the coil assembly 132 close to the penetration surface 110 b .

[0087] Please refer to Figure 1-Figure 5 In this embodiment, the rotor magnet 140 is attached and fixed to the side of the coil assembly 132 close to the penetration surface 110 b , so that the thickness of the ultra-thin motor driving structure 100 is thinner.

[0088] It should be noted that the current is transmitted to the coil assembly 132 through the central axis 131, so that the coil assembly 132 forms a magnetic field, the stator magnet 120 is coupled with the coil assembly 132, and the coil assembly 132 drives the central axis 131 to rotate around its axis, so that the coil assembly 132 drives the rotor magnet 140 to rotate, and the rotor magnet 140 drives the stirrer inside the stirring cup 190 to rotate.

[0089] It should be noted that the central axis 131 is substantially cylindrical and made of conductive material.

[0090] Preferably, the ultra-thin motor driving structure 100 further includes:

[0091] The first magnetic yoke 150 is installed between the rotor magnet 140 and the rotor coil assembly 130, and divides the accommodating cavity 110a into a first space 110c and a second space 110d isolated from the first space 110c. The rotor magnet 140 and the penetrating surface 110b are located in the first space 110c, and the stator magnet 120 and the coil assembly 132 are located in the second space 110d.

[0092] Please refer to Figure 1-Figure 5 In this embodiment, the first magnetic yoke 150 is installed between the rotor magnet 140 and the rotor coil assembly 130, thereby shielding the magnetic field of the stator magnet 120 and the coil assembly 132 in the second space 110d, and at the same time, the magnetic field of the rotor magnet 140 is reflected to the penetration surface 110b, so that the magnetic field on one side of the rotor magnet 140 directly passes through the penetration surface 110b, and the magnetic field on the other side is reflected by the first magnetic yoke 150 through the penetration surface 110b, so that the magnetic fields are superimposed, thereby better driving the rotor magnet 140 to rotate. At the same time, the magnetic fields of the stator magnet 120 and the coil assembly 132 are prevented from interfering with the rotor magnet 140, so that the stirrer rotates more smoothly.

[0093] It should be noted that the first magnetic yoke 150 is substantially disc-shaped and is made of iron material.

[0094] Preferably, in the length direction of the central axis 131 , the projection area of ​​the first magnetic yoke 150 completely covers the projection area of ​​the stator magnet 120 .

[0095] Please refer to Figure 1-Figure 5In this embodiment, since the projection area of ​​the first magnetic yoke 150 completely blocks the projection area of ​​the stator magnet 120 in the length direction of the central axis 131, the first magnetic yoke 150 can completely avoid the leakage of magnetic flux inside the second space 110d.

[0096] Preferably, the ultra-thin motor driving structure 100 further includes:

[0097] The second magnetic yoke 160 is disposed around the stator magnet 120 and forms the second space 110 d between the second magnetic yoke 160 and the first magnetic yoke 150 .

[0098] Please refer to Figure 1-Figure 5 In this embodiment, since the second magnetic yoke 160 surrounds the outer ring of the stator magnetic yoke and forms a second space 110d between the second magnetic yoke 160 and the first magnetic yoke 150, the magnetic exposure of the stator magnet 120 and the rotor coil assembly 130 in the second space 110d is ensured, so as to ensure the magnetism of the rotor magnet 140 to the stirring rod in the stirring cup 190, thereby ensuring the smoothness of the rotation of the stirring rod.

[0099] It should be noted that the second magnetic yoke 160 is substantially annular and made of iron.

[0100] Preferably, the rotor magnet 140 has at least two poles.

[0101] Please refer to Figure 1-Figure 5 In this embodiment, the rotor magnet 140 is coupled with the two magnetic poles of the stirrer through two-pole magnetic poles, thereby ensuring that the center position of the stirrer and the center position of the rotor magnet 140 are on the axis of the central axis 131 to ensure the stirring efficiency and stirring effect of the stirrer.

[0102] Preferably, the rotor magnet 140 is integrally or separately arranged.

[0103] Please refer to Figure 1-Figure 5 In this embodiment, the rotor magnet 140 can be set to be integrated. The integrated rotor magnet 140 can ensure the uniformity of the magnetic force of the two poles, avoid eccentric rotation of the stirrer due to uneven magnetic force, and improve the stirring efficiency and stirring effect of the stirrer.

[0104] In another embodiment, a plurality of split magnets are arranged around or symmetrically to form the rotor magnet 140 , and the rotor magnet 140 is arranged around or symmetrically with the axis of the central shaft 131 as the midpoint to ensure that the center of the stirring bar is located on the axis of the central shaft 131 .

[0105] Preferably, the ultra-thin motor driving structure 100 further includes:

[0106] A first bearing 170, mounted on the penetration surface 110b;

[0107] A second bearing 180 is installed on an inner wall of the accommodating cavity 110a away from the penetrating surface 110b;

[0108] Both ends of the central axis 131 are rotatably connected to the first bearing 170 and the second bearing 180 , respectively. The first bearing 170 and the second bearing 180 are both located on the central axis 131 line of the housing 110 .

[0109] Please refer to Figure 1-Figure 5 In this embodiment, the central axis 131 is installed in the accommodating cavity 110a through the first bearing 170 and the second bearing 180, thereby ensuring that the coil assembly 132 can rotate around the axis of the central axis 131 under the influence of the stator magnet 120 during the process of generating a magnetic field, so that the central axis 131 can rotate in the accommodating cavity 110a.

[0110] Thus, the rotor magnet 140 can drive the stirrer in the stirring cup 190 to rotate under the drive of the coil assembly 132 , so as to stir the material in the stirring cup 190 .

[0111] It should be noted that both the first bearing 170 and the second bearing 180 are annular bearings.

[0112] Preferably, the coil assembly 132 includes:

[0113] Silicon steel sheet 1321, mounted on the central shaft 131;

[0114] The induction coil 1322 is wound on the silicon steel sheet 1321;

[0115] The rotor coil assembly 130 further includes:

[0116] The carbon brush 133 is disposed in the accommodating cavity 110 a and abuts against the central axis 131 .

[0117] Please refer to Figure 1-Figure 5 In this embodiment, a plurality of layers of silicon steel sheets 1321 are provided to reduce hysteresis loss and eddy current loss, thereby improving the efficiency of the ultra-thin motor drive structure 100 .

[0118] The induction coil 1322 is used to generate a magnetic field when energized, and is coupled with the stator magnet 120 , thereby driving the rotor coil assembly 130 to rotate around the central axis 131 .

[0119] The carbon brush 133 is used to transmit current to the rotor coil assembly 130 and change the current direction, so that the rotor coil assembly 130 can rotate in the accommodating cavity 110a, thereby driving the rotor magnet 140 to rotate, and then the rotor magnet 140 drives the stirring rod in the stirring cup 190 to rotate.

[0120] A stirring cup 190, comprising the ultra-thin motor drive structure 100 as described in any one of the above;

[0121] The mixing cup 190 includes:

[0122] The cup body 191 has a liquid cavity 191a formed inside. A mounting groove 191b is formed at the bottom of the cup body 191. The two ends of the ultra-thin motor drive structure 100 are respectively attached to the bottom wall and the top wall of the mounting groove 191b.

[0123] The stirring bar 200 is disposed in the liquid chamber 191 a and coupled with the rotor magnet 140 of the ultra-thin motor driving structure 100 .

[0124] Please refer to Figure 1-Figure 5 In this embodiment, during assembly, the ultra-thin motor drive structure 100 is installed in the mounting groove 191b and fits to the bottom wall and the top wall of the mounting groove 191b. There is no need to align or adjust the distance between the rotor magnet 140 and the bottom of the stirring cup 190, thereby making the assembly more efficient and improving the efficiency of assembly.

[0125] During use, the power supply is connected, and the power is supplied to the rotor coil assembly 130 through the carbon brush 133, and then the induction coil 1322 generates a magnetic field. Under the action of the stator magnet 120, the rotor coil assembly 130 is driven to rotate around the central axis 131. Since the rotor magnet 140 is attached to the induction coil 1322, and the first magnetic yoke 150 is located between the rotor magnet 140 and the rotor magnet 140, a part of the magnetism of the rotor magnet 140 directly penetrates the penetration surface 110b to the liquid cavity 191a and couples with the stirrer, and the other part of the magnetism is reflected by the first magnetic yoke 150, penetrates the penetration surface 110b to the liquid cavity 191a and couples with the stirrer, so that the rotation effect of the stirrer is better and the stirring effect of the stirrer is better.

[0126] It should be further explained that the stirring bar 200 is roughly in the shape of a capsule, and a raised ring is provided in the middle, and the stirring bar 200 is a magnet.

[0127] The cup body 191 is roughly cylindrical, and a liquid cavity 191a is opened on one side of the cup body 191 for containing liquid or powder, etc. A mounting groove 191b is opened on the other side for mounting the ultra-thin motor drive structure 100 .

[0128] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An ultra-thin motor drive structure, characterized in that: include: A shell body, an accommodating cavity is formed inside, and a penetrating surface is provided on one side of the shell body; A stator magnet is disposed in the accommodating cavity; A rotor coil assembly is disposed in the accommodating cavity, and the stator magnet is disposed around the rotor coil assembly; A rotor magnet is disposed on the rotor coil assembly and is disposed toward the penetration surface; The rotor coil assembly rotates to drive the rotor magnet to rotate, and the magnetic field of the rotor magnet penetrates the penetration surface and couples with the stirrer in the stirring cup to drive the stirrer to rotate in the stirring cup.

2. The ultra-thin motor drive structure according to claim 1, characterized in that: The rotor coil assembly comprises: A central axis, rotatably disposed in the accommodating cavity; A coil assembly, wherein the central axis passes through the coil assembly, and the coil assembly is mounted on the central axis; The rotor magnet is in contact with a side of the coil assembly close to the penetration surface.

3. The ultra-thin motor drive structure according to claim 2, characterized in that: The ultra-thin motor drive structure also includes: The first magnetic yoke is installed between the rotor magnet and the rotor coil assembly, and divides the accommodating cavity into a first space and a second space isolated from the first space. The rotor magnet and the penetration surface are located in the first space, and the stator magnet and the coil assembly are located in the second space.

4. The ultra-thin motor drive structure according to claim 3, characterized in that: In the length direction of the central axis, the projection area of ​​the first yoke completely covers the projection area of ​​the stator magnet.

5. The ultra-thin motor drive structure according to claim 3, characterized in that: The ultra-thin motor drive structure also includes: The second magnetic yoke is disposed around the stator magnet and forms the second space between the second magnetic yoke and the first magnetic yoke.

6. The ultra-thin motor drive structure according to claim 1, characterized in that: The rotor magnet has at least two magnetic poles.

7. The ultra-thin motor drive structure according to claim 1, characterized in that: The rotor magnet is arranged in an integrated manner or in a split manner.

8. The ultra-thin motor drive structure according to claim 2, characterized in that: The ultra-thin motor drive structure also includes: A first bearing mounted on the penetration surface; A second bearing is mounted on an inner wall of the accommodating cavity away from the penetration surface; Both ends of the central shaft are rotatably connected to the first bearing and the second bearing respectively, and the first bearing and the second bearing are both located on the central axis of the housing.

9. The ultra-thin motor drive structure according to claim 2, characterized in that: The coil assembly comprises: Silicon steel sheet, installed on the central shaft; An induction coil is wound on the silicon steel sheet; The rotor coil assembly further comprises: The carbon brush is arranged in the accommodating cavity and abuts against the central axis.

10. A mixing cup, characterized in that: comprising the ultra-thin motor drive structure as claimed in any one of claims 1 to 9; The mixing cup comprises: A cup body, with a liquid cavity formed inside, a mounting groove is provided at the bottom of the cup body, and two ends of the ultra-thin motor drive structure are respectively attached to the bottom wall and the top wall of the mounting groove; The stirring rod is arranged in the liquid chamber and coupled with the rotor magnet of the ultra-thin motor driving structure.

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