Electric heating cup

Abstract

The invention discloses an electric heating cup which comprises a cup body and a base, the cup body is provided with a liquid containing cavity, the cavity of the base is provided with a control mainboard and a heating piece electrically connected with the control mainboard, the cup body is of a hollow structure, the base is detachably arranged at the bottom end of the cup body, the base comprises a sealing wall, and the sealing wall is arranged on the base. At least part of the sealing wall is a cavity bottom wall corresponding to the liquid containing cavity, and the heating piece is arranged on the sealing wall. According to the modular electric heating cup, the base is convenient to disassemble and assemble, and the heating efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of water cups, and in particular to an electric heating cup. Background Art

[0002] The electric cup is a common household container. It uses the electric heating device integrated inside it to convert electrical energy into thermal energy to heat the liquid in the cup, making it easier for people to drink. In the related art, the electric cup includes a cup body and a base. The bottom of the cup body is an integrally arranged sealing wall. In order to ensure the heating efficiency, the heating device is arranged on the sealing wall of the cup body, and the control motherboard of the electric cup is arranged on the base. Therefore, it is very cumbersome to disassemble and assemble the base, and it is easy to pull the connecting wires, making it difficult to balance the heating efficiency of the electric cup and the convenient disassembly and assembly of the base. Summary of the invention

[0003] The purpose of the present invention is to at least solve the problems in the background technology and to provide an electric heating cup.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An electric heating cup comprises a cup body and a base, wherein the cup body has a liquid holding cavity, the base has an installation cavity, the installation cavity is provided with a control mainboard and a heating element electrically connected to the control mainboard, the cup body is a hollow structure, the base is detachably arranged at the bottom end of the cup body, the base comprises a sealing wall, at least a portion of the sealing wall is a cavity bottom wall corresponding to the liquid holding cavity, and the heating element is arranged on the sealing wall.

[0006] In the electric cup of the above technical solution, the heating element and the control mainboard are both arranged on the base, and the base is detachably arranged on the cup body, so that the base can be used as an assembly module of the electric cup. During the disassembly process of the base and the cup body, the wires between the heating element and the control mainboard will not be pulled, which facilitates the disassembly of the base and the cup body. At the same time, the heating element is arranged on the sealing wall corresponding to the bottom wall of the liquid storage cavity, which ensures the heating efficiency and takes into account the heating efficiency of the electric cup and the disassembly of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0008] Figure 1 A schematic diagram of the explosion structure of an electric heating cup according to an embodiment;

[0009] Figure 2 It is a cross-sectional structural diagram of the cup body and the base in one embodiment;

[0010] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0011] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at D in the middle;

[0012] Figure 5 for Figure 2 The enlarged structural schematic diagram of the first wall and the second wall is shown in FIG.

[0013] Figure 6 This is a schematic diagram of the structure of a cup body according to an embodiment;

[0014] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at A in the middle;

[0015] Figure 8 for Figure 6 A schematic diagram of the enlarged structure at B in the middle;

[0016] Fig. 9 This is a schematic diagram of the structure of a cup body according to an embodiment;

[0017] Fig.10 is a schematic structural diagram of a base of an embodiment;

[0018] Fig.11 is a schematic diagram of an exploded structure of a base in an embodiment;

[0019] Fig.12 is a schematic diagram of the cross-sectional structure of a first sealing ring in an embodiment;

[0020] Fig.13 is a structural schematic diagram showing the installation relationship between the second sealing ring and the sealing wall in an embodiment;

[0021] Fig.14 is a structural schematic diagram showing the installation relationship between the third sealing ring and the connecting part in an embodiment;

[0022] Fig.15 is a structural schematic diagram showing the installation relationship between the seat body and the connecting part in an embodiment;

[0023] Fig.16 is a schematic diagram showing the installation structure of a temperature detector in an embodiment;

[0024] Fig.17 The diagram is a schematic diagram showing the structure of a silicone pad and a sealing pad in an embodiment.

[0025] Reference numerals:

[0026] 100, cup body, 101, inner cylinder, 1011, first welding surface, 1012, third welding surface, 102, outer cylinder, 1021, step portion, 1022, first wall body, 1023, second wall body, 1024, second welding surface, 1025, fourth welding surface, 103, second thread, 104, vacuum chamber, 105, liquid chamber, 200, base, 201, seat body, 2011, second mounting column, 2012, first mounting groove, 202, connecting portion, 2021, first thread, 2022, annular rib, 2023, first mounting column, 202 4. Installation platform, 203. Sealing wall, 2031. Bottom wall, 2032. Side ring wall, 204. First sealing ring, 2041. Installation ring groove, 2042. Second sealing ring, 2043. Third sealing ring, 205. Annular cavity, 206. Fourth sealing ring, 207. Silicone pad, 208. Sealing pad, 209. Second installation groove, 210. Groove, 211. Charging port, 213. Annular column, 214. Limiting step, 215. Temperature detector, 216. Spring, 217. Installation cavity, 218. Heating element, 219. Control main board, 300. Cup cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. It should be noted that the words "inside", "outside", "horizontal", "vertical", "upper end", "lower end" and so on used to describe the orientation in the embodiments are all the positions of the electric heating cup when it is normally placed.

[0028] like Figure 1-Figure 17 As shown, an electric cup in an embodiment includes a cup body 100 and a base 200. The base 200 is detachably arranged at the bottom end of the cup body 100. A cup cover 300 is arranged at the upper end of the cup body 100. The cup body 100 has a liquid holding cavity 105. The base 200 is provided with a control mainboard 219 and a heating element 218 electrically connected to the control mainboard 219. The base 200 includes a sealing wall 203. At least a part of the sealing wall 203 is the bottom wall of the cavity corresponding to the liquid holding cavity 105. The heating element 218 is arranged on the sealing wall 203.

[0029] In one embodiment, the heating element 218 is attached to the sealing wall 203, and at least a portion of the sealing wall 203 serves as the bottom wall of the liquid holding cavity 105, so that the heating element 218 can heat the liquid holding cavity 105 through the bottom wall, thereby ensuring the heating efficiency of the electric cup. The base 200 is detachably arranged at the bottom end of the cup body 100, and the base 200 seals the lower end of the inner cylinder 101. The base 200 can be used as a modular component. When the base 200 is installed at the bottom end of the cup body 100, the base 200 blocks the lower end of the liquid holding cavity 105, thereby forming a container for holding liquid; when the base 200 is disassembled from the lower end of the inner cylinder 101, the base or the cup body can be easily replaced, repaired, etc., which also increases the fun of the electric cup. At the same time, at least a portion of the sealing wall 217 serves as the bottom wall of the liquid holding cavity 105, taking into account the heating efficiency of the electric cup.

[0030] Furthermore, the heating element 218 is a heating sheet, which is attached to the sealing wall 203 by gluing, welding, etc. Herein, "the heating element 218 is attached to the sealing wall 203" includes the heating element 218 and the sealing wall 203 being attached by glue, such as thermally conductive glue, sealant, etc., or being attached by welding, or by an insulating layer, or by pressing other components, etc. Of course, the heating element 218 can also be other components with heating capabilities such as a heating film.

[0031] In one embodiment, the base 200 has an installation cavity 217, and the control mainboard 219 and the heating element 218 are located in the installation cavity 217. At this time, the control mainboard 219 and the heating element 218 are located on the side of the sealing wall 203 away from the liquid storage cavity 105, and the heating element 218 is attached to the bottom of the sealing wall 203, and the sealing wall 203 isolates the liquid storage cavity 105 and the installation cavity 217. At this time, the heating element 218 can heat the liquid in the electric cup through the heat conduction of the sealing wall 203, taking into account the heating efficiency of the electric cup and the convenient disassembly and assembly of the base 200.

[0032] In one embodiment, the heating element 218 is located on the side of the sealing wall 203 facing the liquid chamber 105, that is, the heating element 218 is attached to the top of the sealing wall 203, and the control main board 219 is located on the side of the sealing wall 203 away from the liquid chamber 105. The sealing wall is also provided with a through hole, and the wire between the control main board 219 and the heating element 218 passes through the through hole. In this case, the heating element 218 is also the bottom wall of the cavity corresponding to the liquid chamber 105, and an insulating layer needs to be coated on the surface of the heating element 218.

[0033] In one embodiment, Figure 6As shown, the cup body 100 includes a hollow outer cylinder 102 and an inner cylinder 101, the liquid holding cavity 105 is located in the inner cylinder 101, the upper end of the outer cylinder 102 is tightly connected to the upper end of the inner cylinder 101, the lower end of the outer cylinder 102 is tightly connected to the lower end of the inner cylinder 101, and the cup body 100 includes a vacuum cavity 104, the vacuum cavity 104 is located between the outer cylinder 102 and the inner cylinder 101, and the cavity wall corresponding to the vacuum cavity 104 is a partial wall of the outer cylinder 102 and a partial wall of the inner cylinder 101.

[0034] The vacuum chamber 104 of the cup body of this embodiment is formed by the outer cylinder 102 and the partial wall of the inner cylinder 101. It is only necessary to seal the upper and lower ends of the outer cylinder 102 and the inner cylinder 101. The cup body structure is simple and easy to produce and process. Furthermore, the outer cylinder 102 and the inner cylinder 101 are both hollow cylindrical structures, and the upper and lower ends of the two are welded and connected, and the vacuum chamber 104 located between the outer cylinder 102 and the inner cylinder 101 is formed by vacuuming.

[0035] In one embodiment, Figure 7 , Figure 8 As shown, the upper end of the outer cylinder 102 has a first welding surface 1011, and the upper end of the inner cylinder 101 has a second welding surface 1024, and the first welding surface 1011 is welded to the second welding surface 1024. That is, there is a partial bonding surface between the upper end of the outer cylinder 102 and the upper end of the inner cylinder 101, and the bonding surface is welded to reduce the probability of a cold weld between the outer cylinder 102 and the inner cylinder 101.

[0036] Furthermore, the lower end of the outer cylinder 102 has a third welding surface 1012, and the lower end of the inner cylinder 101 has a fourth welding surface 1025, and the third welding surface 1012 is welded to the fourth welding surface 1025. Similarly, there is a partial bonding surface between the lower end of the outer cylinder 102 and the lower end of the inner cylinder 101, and the bonding surface is welded to reduce the probability of a cold weld between the outer cylinder 102 and the inner cylinder 101.

[0037] The cup body 100 is in a double-layer cylindrical shape as a whole, by welding the upper and lower ends of the outer cylinder 102 to the upper and lower ends of the inner cylinder 101, thereby forming a vacuum chamber 104 between the outer cylinder 102 and the inner cylinder 101. In the prior art, an electric heating cup has an inner liner as a liquid container, and the bottom end of the inner liner needs to be welded to the outer liner through an additional third piece, which has a complex structure and a large number of welding times. The electric heating cup of this embodiment greatly simplifies the formation structure of the vacuum chamber 104, reduces the welding of the electric heating cup, and thus simplifies the processing of the electric heating cup, and reduces the welding defects of the electric heating cup.

[0038] In one embodiment, Figure 9-13The base 200 includes a connecting portion 202 and a seat body 201, one end of the connecting portion 202 is connected to the seat body 201, the other end of the connecting portion 202 is connected to the sealing wall 203, and the connecting portion 202 is connected to the inner cylinder 101. Specifically, the side wall of the connecting portion 202 is provided with a first thread 2021, and the side wall of the inner cylinder 101 is provided with a second thread 103, and the second thread 103 cooperates with the first thread 2021, so that the connecting portion 202 and the inner cylinder 101 are detachably threadedly connected, so that the base 200 is detachably arranged at the bottom end of the cup body 100.

[0039] In one embodiment, the connecting portion 202 and the inner cylinder 101 can also be connected by a snap-fitting manner. For example, a first snap rib is provided on the side wall of the inner cylinder 101, and a second snap rib is provided on the side wall of the connecting portion 202. When the connecting portion 202 extends into the inner cylinder 101, an external force is used to push the second snap rib from the outside to the inside and clamp the first snap rib. After the external force is removed, the first snap rib of the inner cylinder 101 limits the base 200 in the axial downward direction, and the seat portion 201 and the outer cylinder 102 are abutted against each other so that the base 200 is limited in the axial upward direction, so that the base 200 can be detachably and stably arranged on the cup body 100.

[0040] Alternatively, in one embodiment, the inner wall of the seat body 201 is provided with a third thread, and the outer wall of the outer cylinder 102 is provided with a fourth thread, the fourth thread matches the third thread, and the base 200 is detachably provided on the outer cylinder 102 through a threaded connection, so that the base 200 is detachably connected to the cup body 100.

[0041] In one embodiment, Fig.15 , Fig.16 As shown, the base 200 is provided with a temperature detector 215, and the probe of the temperature detector 215 is against the sealing wall 203, and the temperature detector 215 can detect the water temperature of the electric cup. Of course, a voice component can also be set in the accommodating cavity of the base 200, which is compatible with multifunctional water cups such as voice cups. As mentioned above, the base 200 is used as an assembly module, and can integrate functions such as heating, voice, and temperature detection, thereby becoming a modular intelligent electric cup. The specific structure of the temperature detector 215, the heating element, and the voice component can select the model or component of the existing technology, which will not be repeated.

[0042] Further, the end of the connecting portion 202 facing the sealing wall 203 has a mounting platform 2024, and the temperature detector 215 is arranged on the mounting platform 2024. Specifically, the mounting platform 2024 has an annular column 213 on one side facing the sealing wall 203, and at least part of the temperature detector 215 is located in the annular column 213. The inner wall of the annular column 213 is provided with a limiting step 214. The mounting platform 2024 is also provided with a spring 216, one end of the spring 216 extends into the annular column 213 and abuts against the limiting step 214, and the other end of the spring 216 abuts against the temperature detector 215. The spring 216 is in a compressed state, so that the spring 216 gives an upward force to the temperature detector 215, prompting the probe of the temperature detector 215 to be close to the sealing wall 203, so that it can detect the temperature of the liquid in the cup body 100 more accurately. In other embodiments, the limiting step may not be provided, and one end of the spring 206 extends into the annular column 213 and abuts against the mounting platform 2024.

[0043] In one embodiment, Figure 3 , Fig.11 , Fig.12 As shown, the outer periphery of the mounting platform 2024 is sleeved with a first sealing ring 204, and the mounting annular groove 2041 of the first sealing ring 204 is connected to the side annular wall 2032 of the sealing wall 203, so that the sealing wall 203 is connected to the mounting platform 2024, and the sealing wall 203 and the first sealing ring 204 seal the bottom end of the liquid holding cavity 105, that is, seal the bottom end of the inner cylinder 101, so that it can be used to hold liquid. Specifically, the mounting platform 2024 includes an annular rib 2022 arranged in the direction facing the sealing wall 203, the first sealing ring 204 is detachably fixedly sleeved on the annular rib 2022, the first sealing ring 204 is also provided with an mounting annular groove 2041, the sealing wall 203 includes a bottom wall 2031 and a side annular wall 2032, the side annular wall 2032 is detachably fixedly installed in the mounting annular groove 2041, so that the sealing wall 203 is detachably fixedly arranged on the connecting portion 202. In other embodiments, the sealing wall 203 may also be composed of only the bottom wall 2031, and fixed to the connecting portion 202 by welding, clamping or threading. The first sealing ring 204 and the sealing wall 203 seal the lower end of the inner cylinder 101, that is, the bottom end of the liquid holding cavity 105, which can effectively prevent the liquid in the cup from leaking out of 200 or flowing into the mounting cavity 217 of the base 200 and damaging the internal components in the base 200.

[0044] In one embodiment, Fig.13As shown, the outer periphery of the sealing wall 203 is sleeved with a second sealing ring 2042, and the second sealing ring 2042 abuts against the side wall of the inner cylinder 101. The sealing wall 203 and the second sealing ring 2042 seal the lower end of the inner cylinder 101, that is, the bottom end of the liquid storage chamber 105 is sealed. The second sealing ring 2042 is fixedly sleeved on the outer periphery of the sealing wall 203 by its own elastic deformation force, and elastically abuts against the inner side wall of the outer cylinder 102. The base 200 seals the lower end of the inner cylinder 101 through the sealing wall 203 and the second sealing ring 2042. In this case, the annular rib 2022 is not required, and the sealing wall 203 can be fixed to the connecting portion 202 by welding, interference fit, clamping, or threaded fit.

[0045] In one embodiment, Fig.14 As shown, the side wall of the connecting portion 202 is provided with a third sealing ring 2043, which is fixedly sleeved on the outer periphery of the connecting portion 202 by its own elastic deformation force, and elastically abuts against the inner wall of the outer cylinder 102, and the sealing wall 203 and the third sealing ring 2043 seal the lower end of the inner cylinder 101, that is, the bottom end of the liquid holding chamber 105. Similarly, the annular rib 2022 is not required at this time, and the sealing wall 203 can be fixed to the connecting portion 202 by welding, interference fit, clamping, or threaded fit.

[0046] In one embodiment, the shape of the sealing wall 203 corresponds to the cross-sectional shape of the inner cavity of the inner cylinder 101 , and the sealing wall 203 is threadedly connected or interference fit with the inner cylinder 101 , so that a single sealing wall 203 can seal the inner cylinder 101 without the need for a first sealing ring 204 .

[0047] In one embodiment, Fig.15 As shown, the connecting portion 202 also has a first mounting column 2023, the base portion 201 is provided with a second mounting column 2011, the second mounting column 2011 is provided with a first mounting groove 2012 corresponding to the first mounting column 2023, and at least a portion of the first mounting column 2023 is inserted into the first mounting groove 2012, so that the connecting portion 202 is detachably connected to the base portion 201.

[0048] In one embodiment, Fig.10As shown, there is an annular cavity 205 between the base portion 201 and the connecting portion 202, and the annular cavity 205 is provided with a fourth sealing ring 206. At least part of the lower end of the cup body 100 extends into the annular cavity 205 and abuts against the fourth sealing ring 206. On the one hand, part of the lower end of the cup body 100 is hidden in the annular cavity 205, which increases the overall aesthetics of the electric cup. On the other hand, the cup body 100 includes an inner cylinder 101 and an outer cylinder 102, that is, at least part of the lower end of the inner cylinder 101 and the outer cylinder 102 extends into the annular cavity 205, which reduces the impact of bumps and frictions on the lower ends of the inner cylinder 101 and the outer cylinder 102 connected by welding, thereby increasing the service life and quality of the electric cup. The fourth sealing ring 206 elastically abuts against the lower end of the inner cylinder 101 or the outer cylinder 102 , or the fourth sealing ring 206 elastically abuts against the lower end of both the inner cylinder 101 and the outer cylinder 102 , thereby increasing the sealing between the base 200 and the cup body 100 .

[0049] In one embodiment, Figure 2 , Figure 4 , Figure 5 As shown, the lower end of the outer cylinder 102 has a step portion 1021, the base 200 abuts against the step portion 1021, the step portion 1021 includes a first wall 1022 and a second wall 1023, the first wall 1022 abuts against the base 200, and the second wall 1023 is welded to the lower end of the inner cylinder 101. Of course, in other embodiments, a step portion can also be provided at the lower end of the inner cylinder to cooperate with the lower end of the outer cylinder for welding.

[0050] Furthermore, the step portion 1021 is integrally formed on the outer cylinder 102, and the step portion 1021 is formed in the inward direction of the outer cylinder 102. The first wall 1022 is arranged as a whole in the horizontal direction and is against the seat portion 201 of the base 200. The second wall 1023 is arranged as a whole in the vertical direction and is welded to the lower end of the inner cylinder 101. On the one hand, the step portion 1021 can be against the base 200 to limit the upward displacement of the base 200. On the other hand, it can make the second wall 1023 close to the inner cylinder 101, which is convenient for welding with the bottom end of the inner cylinder 101.

[0051] Furthermore, the second wall 1023 can be threadedly connected or snap-fitted with the base 200, further increasing the connection strength between the base 200 and the cup body 100. It can be understood that when the second wall 1023 is threadedly connected with the base 200, it is only necessary to set corresponding threads on the outer wall of the second wall 1023 and the inner wall of the base 200; when the second wall 1023 is snap-fitted with the base 200, it is only necessary to set convex ribs or bumps on the outer wall of the second wall 1023 to fit with the inner wall of the base 200 through interference and clamp the second wall 1023.

[0052] In this embodiment, Fig.17As shown, a silicone pad 207 is provided at the bottom end of the base 200 , and a charging interface 211 and a sealing pad 208 are provided on the side wall of the base 200 . The sealing pad 208 can cover the charging interface 211 , and the sealing pad 208 and the silicone pad 207 are integrally formed.

[0053] Specifically, the silicone pad 207 is in a ring shape, the bottom end of the base 200 is provided with a second mounting groove 209 corresponding to the silicone pad 207, the side wall of the base 200 is provided with a groove 210 connected to the second mounting groove 209, the charging interface 211 is provided on the groove wall of the groove 210, the sealing pad 208 can be clamped in the groove 210 by its own deformation force, and the silicone pad 207 can be clamped in the second mounting groove 209 by its own deformation force. The silicone pad 207 and the sealing pad 208 are connected by flexible silicone, so the sealing pad 208 can move within a certain range, and the silicone pad 207 and the sealing pad 208 are integrally injection molded.

[0054] When the charging interface 211 is not in use, the sealing pad 208 can be snapped into the groove 210 to cover the charging interface 211, ensuring good sealing of the charging interface 211 and reducing the entry of external moisture or dust into the charging interface 211 to affect its use. The sealing pad 208 is integrally formed with the silicone pad 207, so that when the sealing pad 208 is removed from the groove 210, it will not be lost due to misplacement.

[0055] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and inventive concept of the present invention by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. An electric heating cup, comprising a cup body (100) and a base (200), wherein the cup body (100) has a liquid storage cavity (105), characterized in that: The base (200) is provided with a control main board (219) and a heating element (218) electrically connected to the control main board (219); the cup body (100) is a hollow structure; the base (200) is detachably arranged at the bottom end of the cup body (100); the base (200) includes a sealing wall (203); at least a portion of the sealing wall (203) is a bottom wall of the liquid holding cavity (105) corresponding to the cavity; and the heating element (218) is arranged on the sealing wall (203).

2. The electric heating cup according to claim 1, characterized in that: The base (200) includes a mounting platform (2024), and the mounting platform (2024) is located on a side of the sealing wall (203) away from the cup body (100). A first sealing ring (204) is sleeved on the outer periphery of the mounting platform (2024), and the sealing wall (203) and the first sealing ring (204) seal the bottom end of the liquid holding chamber (105), or a second sealing ring (2042) is sleeved on the side wall of the sealing wall (203), and the sealing wall (203) and the second sealing ring (2042) seal the bottom end of the liquid holding chamber (105).

3. The electric heating cup according to claim 2, characterized in that: A mounting ring groove (2041) is provided on the side of the first sealing ring (204) facing the sealing wall (203); the sealing wall (203) comprises a bottom wall (2031) and a side ring wall (2032); the side ring wall (2032) is provided in the mounting ring groove (2031).

4. The electric heating cup according to claim 2 or 3, characterized in that: An annular column (213) is provided on the side of the installation platform (2024) facing the sealing wall (203), and a temperature detector (215) is installed on the annular column (213), and the probe of the temperature detector (215) is against the sealing wall (203).

5. The electric heating cup according to claim 4, characterized in that: The annular column (213) is installed with a spring (216), one end of the spring (216) is against the mounting platform (2024) or the bottom end of the annular column (213), and the other end of the spring (216) is against the temperature detector (215).

6. The electric heating cup according to claim 1, 2, 3 or 5, characterized in that: The base (200) comprises a connecting portion (202) and a seat portion (201); one end of the connecting portion (202) is connected to the seat portion (201); the other end of the connecting portion (202) is connected to the sealing wall (203); the connecting portion (202) or the seat portion (201) is detachably connected to the cup body (100).

7. The electric heating cup according to claim 6, characterized in that: The side wall of the connecting portion (202) is provided with a third sealing ring (2043), and the sealing wall (203) and the third sealing ring (2043) seal the bottom end of the liquid storage chamber (105); and / or, an annular cavity (205) is provided between the seat portion (201) and the connecting portion (202), and the annular cavity (205) is provided with a fourth sealing ring (206), and at least part of the lower end of the cup body (100) extends into the annular cavity (205) and abuts against the fourth sealing ring (206).

8. The electric heating cup according to claim 1 or 2 or 3 or 5 or 7, characterized in that: The cup body (100) comprises a hollow outer cylinder (102) and an inner cylinder (101); the liquid holding chamber (105) is located inside the inner cylinder (101); the upper end of the outer cylinder (102) is tightly connected to the upper end of the inner cylinder (101); the lower end of the outer cylinder (102) is tightly connected to the lower end of the inner cylinder (101); the cup body comprises a vacuum chamber (104); the vacuum chamber (104) is located between the outer cylinder (102) and the inner cylinder (101); the chamber wall corresponding to the vacuum chamber (104) is a partial wall of the outer cylinder (102) and a partial wall of the inner cylinder (101); and the base (200) is detachably connected to the bottom end of the inner cylinder (101) or the outer cylinder (102).

9. The electric heating cup according to claim 8, characterized in that: The upper end of the outer cylinder (102) has a first welding surface (1011), the upper end of the inner cylinder (101) has a second welding surface (1012), the first welding surface (1011) and the second welding surface (1012) are welded together; and / or, the lower end of the outer cylinder (102) has a third welding surface (1024), the lower end of the inner cylinder (101) has a fourth welding surface (1025), the third welding surface (1024) and the second welding surface (1012) are welded together. The fourth welding surface (1025) is welded in a fitting manner; and\or, the lower end of the outer cylinder (102) has a step portion (1021), the base (200) abuts against the step portion (1021), the step portion (1021) includes a first wall body (1022) and a second wall body (1023), the first wall body (1022) abuts against the base (200), and the second wall body (1023) is welded to the lower end of the inner cylinder (101).

10. The electric heating cup according to claim 1 or 2 or 3 or 5 or 7 or 9, characterized in that: A silicone pad (207) is provided at the bottom end of the base (200), a charging interface (211) and a sealing pad (208) are provided on the side wall of the base (200), the sealing pad (208) is capable of covering the charging interface (211), and the sealing pad (208) and the silicone pad (207) are integrally formed; and / or, the base (200) has an installation cavity (217), the control main board (219) and the heating element (218) are located in the installation cavity (217); and / or, the heating element (218) is glued and attached to the sealing wall (203).

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