Magnetic stirring cup

Abstract

The utility model discloses a magnetic stirring cup which comprises a cup body, a stirring rod and an electromagnetic driving assembly, the electromagnetic driving assembly is arranged in the cup body, and the electromagnetic driving assembly is used for driving the stirring rod to rotate; the stirring rod is movably mounted on the bottom wall of the cup body and is magnetically connected with the electromagnetic driving assembly; wherein the bottom wall is provided with a receding part, a receding gap is formed between the receding part and the stirring rod, and the width of the receding gap is larger than the maximum downward displaceable amount of the end of the stirring rod in the vertical direction when the stirring rod rotates. According to the magnetic stirring cup, by means of the avoiding gap formed between the avoiding part and the stirring rod, friction and abrasion between the end of the stirring rod and the bottom wall of the cup body in the rapid rotating process are effectively avoided, so that the situation that the bottom wall of the cup body is scratched by the end of the stirring rod and materials on the surface of the end fall off is prevented, and the attractiveness of the cup body is improved; and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stirring cups, in particular to a magnetic stirring cup. BACKGROUND

[0002] The magnetic stirring cup is a common water cup in people's life, and its working principle is to drive the stirring rod to rotate through the magnetic field to generate rotary force to stir the liquid. The magnetic stirring cup mainly consists of a cup body, a stirring rod and an electromagnetic driving assembly. The stirring rod is installed with a permanent magnet material or is made of a permanent magnet material. The electromagnetic driving assembly controls the rotation of the magnetic force rod by adjusting the direction, strength and frequency of the magnetic field. When the magnetic force rod is placed in the liquid in the cup body, the magnetic force rod will produce rotary motion in the cup body with the rotation of the magnetic field, which can effectively stir the liquid in the cup body.

[0003] The existing disclosed magnetic stirring cup directly sets the stirring rod on the bottom wall of the cup body. When the stirring rod rotates, it collides with the bottom wall, which not only causes the surface material of the stirring rod to fall off, especially at the two ends of the stirring rod, but also affects the rotation of the stirring rod due to unnecessary external force, thereby reducing the stirring effect. Specifically, due to the end-to-end swing of the stirring rod under the action of water pressure, gravity and other forces during rotation, the two ends of the stirring rod will contact the bottom wall, which not only causes the stirring rod to be impacted and affected in rotation at the moment of collision, but also continuously affects the rotary motion of the stirring rod due to the subsequent friction. On the one hand, the friction will cause the stirring rod to lose part of the rotational potential energy, thereby reducing the stirring effect of the stirring rod, or even causing irregular rotation of the stirring rod, which will cause unstable and irregular rotational flow, thereby easily causing liquid to splash and uneven stirring. On the other hand, under the condition of high-speed rotation of the stirring rod, the part of the stirring rod contacting the bottom wall will scratch the bottom wall and cause the surface material of the two ends of the stirring rod to fall off. Therefore, after using the magnetic stirring cup for a period of time, it can be seen that the position corresponding to the two ends of the stirring rod on the bottom wall is obviously scratched with a deep scratch, and the two ends of the stirring rod also have very obvious material falling off, which brings a bad user experience. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a magnetic stirring cup to solve the technical problem that the two ends of the stirring rod of the existing magnetic stirring cup are easy to scratch the bottom wall of the cup and cause the material to fall off.

[0005] The technical scheme adopted by the present application is as follows:

[0006] A magnetic stirring cup comprises a cup body, a stirring rod and an electromagnetic drive assembly, the electromagnetic drive assembly is arranged in the cup body and is used to drive the stirring rod to rotate, the stirring rod is movably arranged on the bottom wall of the cup body and is magnetically connected with the electromagnetic drive assembly, wherein the bottom wall is provided with a relief portion, a relief gap is formed between the relief portion and the stirring rod, and the width of the relief gap is greater than the maximum downward displacement of the end of the stirring rod in the vertical direction when the stirring rod rotates.

[0007] The magnetic stirring cup in the application also has the following additional technical features:

[0008] The bottom wall is provided with a support portion protruding upward, and the stirring rod is arranged on the support portion; the area of the bottom wall covered by the projection of the stirring rod on the bottom wall when the stirring rod rotates constitutes the relief portion, and the gap formed between the relief portion and the stirring rod constitutes the relief gap.

[0009] The projection of the support portion on the horizontal plane is a circular structure, the support portion is arranged as an arc-shaped protrusion gradually protruding upward from the outer periphery to the center, and the projection of the stirring rod on the horizontal plane falls within the projection range of the support portion on the horizontal plane.

[0010] The middle part of the stirring rod is provided with a protruding portion protruding outward compared to the two end portions, and the protruding portion is in contact with the support portion.

[0011] The support portion is provided with a support surface for supporting the protruding portion, and the support surface is arranged as a concave surface recessed downward.

[0012] The bottom wall is provided with an annular groove recessed downward, the end of the stirring rod is located above the annular groove, the annular groove constitutes the relief portion, and the gap between the wall of the annular groove and the stirring rod constitutes the relief gap.

[0013] The bottom wall is configured as a curved wall recessed downward, and the stirring rod is arranged at the lowest point of the curved wall.

[0014] The cup body comprises an upper portion and a lower portion, and the inner diameter of the lower portion is smaller than the inner diameter of the upper portion.

[0015] The cup body comprises an inner cup body and an outer cup body, and the side wall of the inner cup body and the side wall of the outer cup body surround a heat insulation cavity.

[0016] The top of the inner cup body and the top of the outer cup body are integrally connected, the bottom of the inner cup body and the bottom of the outer cup body are integrally welded by a connecting piece, and the connecting piece seals the heat insulation cavity into a vacuum cavity.

[0017] Thanks to the above technical solutions, the application has the following technical effects:

[0018] 1. The magnetic stirring cup provided by the present application, by setting an avoiding part on the bottom wall of the cup body, an avoiding gap is formed between the avoiding part and the stirring rod, and the width of the avoiding gap is greater than the maximum displacement of the end portion in the vertical direction during rotation of the stirring rod, thereby avoiding contact between the end portion of the stirring rod and the bottom wall of the cup body, preventing friction and wear between the end portion and the bottom wall of the cup body during rapid rotation of the stirring rod, thereby preventing the end portion of the stirring rod from scratching the bottom wall of the cup body and causing the surface material of the end portion to fall off, improving the appearance, and further improving the user experience. Moreover, after the avoiding part forms an avoidance for the stirring rod, the stirring rod is effectively prevented from being affected by unnecessary external force applied by the bottom wall, so that the stirring rod rotates stably and reliably, the rotational potential energy of the stirring rod is always maintained at a high level, the stirring effect on the liquid in the cup body is improved, the rotational flow generated by the liquid is more stable and regular, the risk of liquid splashing is reduced, and the liquid and powder added in the cup body can be more uniformly mixed through stirring.

[0019] 2. As a preferred mode, the stirring rod is arranged on the support part, since the support part is upwardly protruded from the bottom wall of the cup body, the support part lifts the stirring rod upward by a certain distance, and further makes the two ends of the stirring rod away from the bottom wall of the cup body, so as to form a wide enough avoiding gap between the avoiding part and the end portion of the stirring rod, and the avoiding gap can accommodate the maximum displacement of the end portion in the vertical direction during rotation of the stirring rod.

[0020] 3. As a preferred mode, the middle part of the stirring rod is provided with a protruding part protruding outward compared to the two end portions, and the protruding part is in contact with the support part. On the one hand, the existence of the protruding part increases the distance between the two end portions of the stirring rod and the support part, and further widens the avoiding gap between the two end portions of the stirring rod and the avoiding part, so that the bottom wall of the cup body more effectively avoids the two end portions of the stirring rod, and avoids the two end portions of the stirring rod scratching the bottom wall of the cup body. On the other hand, the position of the protruding part is a part where the material of the stirring rod is accumulated more, and the strength of the stirring rod is effectively increased at this part, which helps to improve the wear resistance and prolong the service life, so that it can better perform the stirring work as the rotating fulcrum of the stirring rod.

[0021] 4. As a preferred mode, the support part is provided with a support surface for supporting the protruding part, and the support surface is arranged as a concave surface downwardly recessed. The concave surface can block and limit the stirring rod, effectively preventing the stirring rod from deviating on the support part, thereby improving the stirring effect of the stirring rod.

[0022] 5. As a preferred mode, the bottom wall is provided with a downwardly recessed annular groove, the annular groove constitutes the avoiding part, the gap between the wall of the annular groove and the stirring rod constitutes the avoiding gap, on the basis of avoiding the two ends of the stirring rod, the annular groove also tightens the internal area around the annular groove and the peripheral area around the annular groove of the bottom wall, so as to increase the strength and hardness, thereby improving the anti-deformation ability and solving the deformation problem of the cup body.

[0023] 6. As a preferred mode, the bottom wall is configured as a downwardly recessed curved wall, the curved wall converges the liquid in the cup body to the center, so as to make the gravity center of the liquid in the center, which is helpful to improve the stirring effect of the stirring rod.

[0024] 7. As a preferred mode, the cup body comprises an upper part and a lower part, the inner diameter of the lower part is smaller than the inner diameter of the upper part, so that the internal space of the lower part is smaller than the internal space of the upper part, in the process of rotating stirring of the stirring rod, the vortex formed in the small space of the lower part is more likely to fill the whole space of the lower part, and the powder added in the magnetic stirring cup is more likely to be uniformly dispersed, and the vortex develops to the upper part and diffuses sufficiently, so that the powder is dispersed in a larger liquid space, thereby improving the taste of the powder brewing. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings described herein are used to provide further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 A cross-sectional view of the magnetic stirring cup provided for the first example of the first embodiment of the present application Figure 1 ;

[0027] Figure 2 A cross-sectional view of the magnetic stirring cup provided for the first example of the first embodiment of the present application Figure 2 ;

[0028] Figure 3 A cross-sectional view of the cup body provided for the first example of the first embodiment of the present application

[0029] Figure 4 A cross-sectional view of the magnetic stirring cup provided for the second example of the first embodiment of the present application Figure 1 ;

[0030] Figure 5 A cross-sectional view of the magnetic stirring cup provided for the second example of the first embodiment of the present application Figure 2 ;

[0031] Figure 6 A cross-sectional view of the cup body provided for the second example of the first embodiment of the present application

[0032] Figure 7 A cross section of the magnetic stirring cup provided by the second embodiment of the present application Figure 1 ;

[0033] Figure 8 A cross section of the magnetic stirring cup provided by the second embodiment of the present application Figure 2 ;

[0034] Figure 9 An enlarged view of the structure at A in FIG. 1 Figure 4 ;

[0035] Figure 10 An enlarged view of the structure at B in FIG. 1 Figure 7 ;

[0036] List of components and reference numerals:

[0037] 1 cup body, 11 bottom wall, 12 support portion, 13 annular groove, 14 inner cup body, 15 outer cup body, 16 heat insulation cavity, 17 base, 18 upper portion, 19 lower portion

[0038] 2 stirring rod, 21 end portion, 22 protrusion

[0039] 3 electromagnetic drive assembly

[0040] 4 clearance

[0041] 5 connecting piece DETAILED DESCRIPTION

[0042] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0043] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0044] In addition, in the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be construed broadly and can be referring to a fixed connection, a detachable connection, or an integral connection; can be a mechanical connection, an electrical connection, or a communication connection; can be a direct connection, or an indirect connection via an intermediate medium; can be a communication between internal elements of two elements, or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In this application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can 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 referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0047] In the embodiments of this application, a magnetic stirring cup is provided. For the convenience of description and understanding, the following content provided by this application is described on the basis of the structure of the product. Of course, those skilled in the art can understand that the above structure is only a specific example and an illustrative description, and cannot constitute a specific limitation on the technical solutions provided by this application.

[0048] Referring to Figures 1 to 10 As shown in the drawings, the magnetic stirring cup provided by this application comprises a cup body 1, a stirring rod 2, and an electromagnetic drive assembly 3. The electromagnetic drive assembly 3 is arranged in the cup body 1, and the electromagnetic drive assembly 3 is used to drive the stirring rod 2 to rotate. The stirring rod 2 is movably mounted on the bottom wall 11 of the cup body 1 and magnetically connected with the electromagnetic drive assembly 3. The bottom wall 11 is provided with a clearance portion, and a clearance gap 4 is formed between the clearance portion and the stirring rod 2. The width of the clearance gap 4 is greater than the maximum displacement of the end portion 21 of the stirring rod 2 in the vertical direction downward when the stirring rod 2 rotates. Specifically, the stirring rod 2 can be placed at the central position of the bottom wall 11 of the cup body 1. The electromagnetic drive assembly 3 is arranged at the lower part of the bottom wall 11 of the cup body 1. When the electromagnetic drive assembly 3 generates a rotating magnetic field in the inner cavity of the cup body 1, it drives the stirring rod 2 to rotate at the center of the bottom wall 11 of the cup body 1, thereby realizing the stirring of the liquid in the cup body 1.

[0049] The magnetic stirring cup provided in the application is characterized in that an avoiding portion is arranged on the bottom wall 11 of the cup body 1, an avoiding gap 4 is formed between the avoiding portion and the stirring rod 2, and the width of the avoiding gap 4 is greater than the maximum displacement of the end portion 21 in the vertical direction downward when the stirring rod 2 rotates. Those skilled in the art can understand that, in order to avoid scratching the bottom wall 11 of the cup body 1 by the two ends of the stirring rod 2, the ideal rotating posture of the stirring rod 2 is to rotate in the state that the middle portion and the two end portions 21 are always at the same horizontal height, so as to avoid the contact and friction of the two end portions 21 with the bottom wall 11 as much as possible. However, it is difficult to avoid the up-and-down swing of the stirring rod 2 during rotation. Once the up-and-down swing occurs, the end portion 21 will be in extrusion contact with the bottom wall 11, increasing the friction, and further scratching the bottom wall 11 and causing the surface material of the end portion 21 to fall off in the state of high-speed rotation. Therefore, the present application increases the distance between the end portion 21 of the stirring rod 2 and the bottom wall 11 through the avoiding gap 4, and makes the avoiding gap 4 greater than the maximum displacement of the end portion 21 downward when the stirring rod 2 swings up and down, so as to avoid the contact of the end portion 21 of the stirring rod 2 with the bottom wall 11 of the cup body 1, prevent the friction and wear of the end portion 21 with the bottom wall 11 of the cup body 1 during the rapid rotation of the stirring rod 2, prevent the end portion 21 of the stirring rod 2 from scratching the bottom wall 11 of the cup body 1 and causing the surface material of the end portion 21 to fall off, improve the aesthetic appearance, and further improve the user experience.

[0050] As for the specific structure of the avoiding portion, the present application is not limited to the following embodiments, including but not limited to the following embodiments:

[0051] Embodiment 1: as Figures 1 to 6 and Figure 9As shown, the bottom wall 11 is provided with an upwardly protruding support portion 12, and the stirring rod 2 is disposed on the support portion 12. When the stirring rod 2 rotates, the area of ​​the bottom wall 11 covered by its projection constitutes the clearance portion, and the gap formed between the clearance portion and the stirring rod 2 constitutes the clearance gap 4. Those skilled in the art will understand that, because the support portion 12 protrudes upward from the bottom wall 11 of the cup body 1, the support portion 12 lifts the stirring rod 2 upward by a certain distance, thereby causing both ends of the stirring rod 2 to move away from the bottom wall 11 of the cup body 1, so as to form a sufficiently wide clearance gap 4 between the clearance portion and the end 21 of the stirring rod 2, so that the clearance gap 4 can fully accommodate the maximum downward displacement of the end 21 of the stirring rod 2 in the vertical direction when it rotates. Since the area of ​​the bottom wall 11 covered by the projection of the stirring rod 2 on the bottom wall 11 when it rotates is a circular area, when the projection of the stirring rod 2 on the horizontal plane falls within the projection range of the support part 12 on the horizontal plane, the clearance part is formed in the support part 12. That is, the area covered by the projection of the stirring rod 2 on the support part 12 when it rotates constitutes the clearance part, and at this time the clearance gap 4 is formed between the support part 12 and the stirring rod 2. When the projection of the end 21 of the stirring rod 2 on the horizontal plane falls outside the projection range of the support part 12 on the horizontal plane, the support part 12 is formed in the middle of the clearance part. In other words, the clearance part includes both the support part 12 provided on the bottom wall 11 and the non-protruding area of ​​the bottom wall 11 located directly below the stirring rod 2.

[0052] Regarding the structure of the support portion 12, in a preferred example, such as Figures 1 to 3 As shown, the projection of the support portion 12 on the horizontal plane is a circular structure. The support portion 12 is configured as an arc-shaped protrusion that gradually rises upward from the outer periphery to the center. The projection of the stirring rod 2 on the horizontal plane falls within the projection range of the support portion 12 on the horizontal plane. In this design, the clearance portion is formed inside the support portion 12. That is, the area covered by the projection of the stirring rod 2 on the support portion 12 when it rotates constitutes the clearance portion. At this time, the clearance gap 4 is formed between the support portion 12 and the stirring rod 2. Therefore, the stirring rod 2 can be placed in the exact center of the support portion 12, and the center of the support portion 12 abuts against the middle of the stirring rod 2. Since the support portion 12 is an arc-shaped protrusion, the contact area between the support portion 12 and the middle of the stirring rod 2 can be reduced, which is beneficial to reducing friction and wear. The support portion 12 gradually decreases from the center to the outer periphery, thereby gradually increasing the distance between it and the stirring rod 2, so that the clearance gap 4 between the two ends 21 of the stirring rod 2 and the support portion 12 gradually increases.

[0053] Regarding the structure of the support portion 12, in another preferred example, such as Figures 4 to 6 as well as Figure 9As shown in the examples, the difference between the present example and the foregoing examples is that the projections of the two end portions 21 of the stirring rod 2 on the horizontal plane fall outside the projection range of the support portion 12 on the horizontal plane, and therefore the projection of the stirring rod 2 on the bottom wall 11 covers the support portion 12 when the stirring rod 2 rotates. At this time, the support portion 12 is formed in the middle of the avoiding portion, in other words, the avoiding portion includes not only the support portion 12 provided on the bottom wall 11 but also the region of the bottom wall 11 that is not upwardly convex directly below the stirring rod 2.

[0054] In the present embodiment, it is further preferred that, as shown in Figure 1 、 Figure 4 and Figure 9 , the middle of the stirring rod 2 is provided with a convex portion 22 that is outwardly convex compared to the two end portions 21, and the convex portion 22 is in contact with the support portion 12. On the one hand, the presence of the convex portion 22 increases the distance between the two end portions 21 of the stirring rod 2 and the support portion 12, and further widens the avoiding gap 4 between the two end portions 21 of the stirring rod 2 and the avoiding portion, so that the bottom wall 11 of the cup 1 more effectively avoids the two end portions 21 of the stirring rod 2, and avoids the two end portions 21 of the stirring rod 2 scratching the bottom wall 11 of the cup 1. On the other hand, the position of the convex portion 22 is a part where the material of the stirring rod 2 is more accumulated, and the strength of the stirring rod 2 is effectively increased at this part, which helps to improve the wear resistance and prolong the service life, so that it can better perform the stirring work as the rotating fulcrum of the stirring rod 2.

[0055] Further, although not shown in the drawings, in addition to the foregoing scheme in which the support portion 12 is arc-shaped convex, the support portion in the present embodiment can also be provided with a support surface for supporting the convex portion 22, and the support surface is provided as a concave surface that is downwardly concave, for example, a concave pit can be provided in the center of the support portion, the inner wall of the concave pit constitutes the support surface, and the support surface is a concave surface. The concave surface can block and limit the stirring rod 2, effectively preventing the stirring rod 2 from running off on the support portion, thereby improving the stirring effect of the stirring rod 2.

[0056] Embodiment 2: as shown in Figure 7 、 Figure 8 and Figure 10As shown, the bottom wall 11 is provided with an annular groove 13 formed by downward concave, the end 21 of the stirring rod 2 is correspondingly located above the annular groove 13, the annular groove 13 constitutes the avoiding part, and the gap between the wall of the annular groove 13 and the stirring rod 2 constitutes the avoiding gap 4. Different from the scheme that the avoiding part is entirely or partially upward convex relative to the bottom wall 11 of the cup body 1 in the foregoing embodiment, in this embodiment, the annular groove 13 formed by the downward concave of the partial area of the bottom wall 11 constitutes the avoiding part, the gap between the wall of the annular groove 13 and the stirring rod 2 constitutes the avoiding gap 4, and the annular groove 13 not only realizes the avoiding of the two ends of the stirring rod 2, but also tightens the internal area located around the annular groove 13 and the peripheral area surrounding the annular groove 13 of the bottom wall 11, so that the strength and hardness are increased, and the deformation resistance is improved, thereby improving the deformation problem of the cup body 1.

[0057] As a preferred embodiment of the present application, the bottom wall 11 is configured as a downward concave curved wall, and the stirring rod 2 is arranged at the lowest point of the curved wall. The curved wall converges the liquid in the cup body 1 to the center, so that the gravity center of the liquid is in the center, which is helpful to improve the stirring effect of the stirring rod 2. Figure 5 、 Figure 6 and Figure 9 As an example in the foregoing embodiment 1, the bottom wall 11 can be gradually downward concave from the edge to the center, and the supporting part 12 is located at the lowest point of the center of the bottom wall 11 and is upward convex and higher than the surrounding concave area. Figure 7 and Figure 8 As an example in the foregoing embodiment 2, the bottom wall 11 can be gradually downward concave from the edge to the center, and the annular groove 13 is arranged around the lowest point of the center of the bottom wall 11.

[0058] Further, as shown in Figure 3 and Figure 6 , the cup body 1 includes an upper part 18 and a lower part 19, and the inner diameter of the lower part 19 is smaller than the inner diameter of the upper part 18, so that the internal space of the lower part 19 is smaller than the internal space of the upper part 18. In the process of rotating and stirring by the stirring rod 2, the vortex formed in the small space of the lower part 19 is more likely to fill the entire space of the lower part 19, and the powder added in the magnetic stirring cup is more likely to be uniformly dispersed, and the vortex developed to the upper part 18 is fully diffused, so that the powder is dispersed in a larger liquid space, and the taste of the powder brewing is improved.

[0059] As another preferred embodiment of the present application, the bottom wall 11 can also be configured as a horizontal plane structure. As shown in Figure 1 、 Figure 2 and Figure 3 , as another example in the foregoing embodiment 1, the bottom wall 11 is configured as a horizontal plane structure, and the supporting part 12 is arranged at the center of the bottom wall 11 and is upward convex and higher than the surrounding plane area.

[0060] Regarding the structure of cup 1, as a preferred embodiment of this application, such as Figures 1 to 6 As shown, the cup body 1 includes an inner cup body 14 and an outer cup body 15. The side walls of the inner cup body 14 and the outer cup body 15 form a heat insulation cavity 16. Through the heat insulation cavity 16's heat-blocking effect, the heat preservation effect of the cup body 1 can be improved. Specifically, in the aforementioned cup body including an upper and lower part, the positions of the inner cup body 14 and the outer cup body 15 corresponding to the lower part 19 can be contracted inward relative to the positions corresponding to the upper part 18, thereby making the inner diameter of the lower part 19 smaller than the inner diameter of the upper part 18. Alternatively, the upper and lower diameters of the outer cup body 15 can be made the same, and only the position of the inner cup body 14 corresponding to the lower part 19 can be contracted inward relative to the position corresponding to the upper part 18, which can also make the inner diameter of the lower part 19 smaller than the inner diameter of the upper part 18.

[0061] Furthermore, the top of the inner cup 14 and the top of the outer cup 15 are integrally connected, and the bottom of the inner cup 14 and the bottom of the outer cup 15 are welded together by a connector 5. The connector 5 seals the heat insulation cavity 16 into a vacuum cavity. In specific processing, a single sheet of material can be bent to form the outer cup 15 and the inner cup 14. By bending, the top of the inner cup 14 and the top of the outer cup 15 become an integral structure. Then, the bottoms of the outer cup 15 and the inner cup 14 are welded together by the connector 5, and the gap between the outer cup 15 and the inner cup 14 is evacuated and sealed, thereby forming a vacuum heat insulation cavity 16 and achieving a vacuum insulation effect.

[0062] In addition, the cup body 1, including the base 17, the outer cup body 15 and the inner cup body 14, can be mounted on the base 17, and the electromagnetic drive assembly 3 can be disposed between the base 17 and the inner cup body 14.

[0063] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0064] 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.

[0065] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1.A magnetic stirring cup, comprising a cup body, a stirring rod and an electromagnetic drive assembly, the electromagnetic drive assembly being arranged in the cup body and used to drive the stirring rod to rotate; characterized in that the stirring rod being movably mounted on a bottom wall of the cup body and magnetically connected with the electromagnetic drive assembly; wherein the bottom wall is provided with a relief portion, and a relief gap is formed between the relief portion and the stirring rod, the width of the relief gap being greater than the maximum downward displacement of an end portion of the stirring rod along a vertical direction when the stirring rod rotates. 2.The magnetic stirring cup according to claim 1, wherein the bottom wall is provided with a support portion protruding upward, and the stirring rod is arranged on the support portion; the area of the bottom wall covered by the projection of the stirring rod on the bottom wall when the stirring rod rotates constitutes the relief portion, and the gap formed between the relief portion and the stirring rod constitutes the relief gap. 3.The magnetic stirring cup according to claim 2, wherein the projection of the support portion on a horizontal plane is a circular structure, the support portion is arranged as an arc-shaped protrusion gradually protruding upward from the outer periphery to the center, and the projection of the stirring rod on the horizontal plane falls within the projection range of the support portion on the horizontal plane. 4.The magnetic stirring cup according to claim 2, wherein a middle portion of the stirring rod is provided with a protruding portion protruding outward compared to the two end portions, and the protruding portion is in contact with the support portion. 5.The magnetic stirring cup according to claim 4, wherein the support portion is provided with a support surface for supporting the protruding portion, and the support surface is arranged as a concave surface protruding downward. 6.The magnetic stirring cup according to claim 1, wherein the bottom wall is provided with an annular groove recessed downward, and an end portion of the stirring rod is located above the annular groove, the annular groove constitutes the relief portion, and the gap between the wall of the annular groove and the stirring rod constitutes the relief gap. 7.The magnetic stirring cup according to claim 1, wherein the bottom wall is arranged as a curved wall recessed downward, and the stirring rod is arranged at the lowest point of the curved wall. 8.The magnetic stirring cup according to claim 7, wherein the cup body comprises an upper portion and a lower portion, and the inner diameter of the lower portion is smaller than the inner diameter of the upper portion. 9.The magnetic stirring cup according to any one of claims 1-8, wherein the cup body comprises an inner cup body and an outer cup body, and the side wall of the inner cup body and the side wall of the outer cup body enclose a heat insulation cavity. 10.The magnetic stirring cup according to claim 9, wherein the top of the inner cup body and the top of the outer cup body are integrally connected, the bottom of the inner cup body and the bottom of the outer cup body are integrally welded by a connecting piece, and the connecting piece seals the heat insulation cavity into a vacuum cavity. ​ ​ ​ ​ ​ ​ ​ ​ ​

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