Spill-proof kettle
Patent Information
- Application Number
- JP2025084153
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-04-03
- Filing Date
- 2025-05-20
- Publication Date
- 2026-10-16
Smart Images
Figure 2026169109000001_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present invention relates to the technical field of kettles, and in particular to a spill-proof kettle.
BACKGROUND ART
[0002] With the development of society and the advancement of science and technology, people's requirements for the quality of life are constantly increasing. People who used to prefer traditional espresso coffee gradually come to favor hand-drip coffee, and further, these people's requirements for hand-drip coffee are also rising. As a result, many cafes now offer hand-drip coffee in addition to traditional espresso coffee. The main tool used for hand-drip coffee is the hand-drip kettle, which can be used for brewing coffee or tea.
[0003] Currently, kettles on the market are equipped with a long-tube spout, whose design realizes control over the water output direction and water output volume, enabling easy brewing. However, repeated operations are required during use, and there is a risk of the kettle tipping over. The kettle contains hot water, and the lid is generally provided with holes for steam to circulate. At the same time, the spout is also in an open state, so when the kettle tips over, a large amount of hot water tends to spill out from both the holes in the lid and the spout, which may cause burns on the user's skin.
SUMMARY OF THE INVENTION
PROBLEMS TO BE SOLVED BY THE INVENTION
[0004] The present invention aims to solve the problems existing in the above-mentioned prior art, and to provide a spill-proof kettle that reduces the amount of hot water that spills out when tipped over and improves user safety.
MEANS FOR SOLVING THE PROBLEMS
[0005] To achieve the above objective, the present invention provides the following technical solutions, The present invention provides a spill-proof kettle comprising a kettle body, a lid, and a heating base, wherein the kettle body has a storage cavity, the lid is airtight and fixedly installed in the upper opening of the storage cavity, and when placed on a horizontal surface, the kettle body has a circular cross-sectional shape in the horizontal plane, a long spout and a handle are arranged on the outer wall of the kettle body, the long spout is positioned opposite the handle, and the weight of the handle is increased so that the center of gravity of the kettle body is closer to the handle, so that when the kettle body tips over onto the surface on which it is placed, the part of the kettle body with the handle partially contacts the surface on which it is placed, the long spout is in an upward-tilted position, and the front The end opening of the long spout is located at the highest point of the long spout, the lid is installed so as to be offset from the center of gravity, and the center of gravity of the kettle body can be brought closer to the handle due to the offset of the center of gravity of the lid, a steam passage is provided in the lid, a steam valve is installed in the steam passage, the storage cavity of the kettle body when placed on a horizontal surface can communicate with the outside through the steam passage, and when the kettle body tips over, the steam valve can close the steam passage to prevent the liquid in the storage cavity from flowing out from the steam passage, the kettle body is arranged to be placed on the heating base for heating the water inside the kettle body, and the cross-sectional shape of the heating base in the horizontal plane is circular.
[0006] Preferably, an elastically deformable seal ring is fixedly installed in the upper opening of the storage cavity, wherein the inner diameter of the seal ring is smaller than the inner diameter of the lower end of the lid, and the outer diameter of the seal ring is larger than the inner diameter of the lower end of the lid. When the lid is sealed and fixed to the upper opening of the storage cavity, the lower end of the lid abuts against the upper end of the seal ring.
[0007] Preferably, when the kettle body is placed on a horizontal surface, the outer diameter of the upper end of the kettle body is smaller than the outer diameter of the lower end of the kettle body, the outer wall of the upper end of the kettle body and the outer wall of the lower end of the kettle body are connected in a curved shape, and the weight of the handle is increased and installed so that the center of gravity of the kettle body is closer to the side of the upper end of the kettle body where the handle is located.
[0008] Preferably, an exhaust cavity is provided in the lid, the lower opening of the exhaust cavity is in communication with the storage cavity, and the upper opening of the exhaust cavity is in communication with the outside, the exhaust cavity forms the steam passage, the steam valve includes a steel ball cavity and steel balls, the steel ball cavity is fixedly installed within the exhaust cavity, the lower opening of the steel ball cavity is in communication with the lower opening of the exhaust cavity, the steel balls are located within the steel ball cavity, and the steel balls are located within the steel ball cavity The steel ball cavity is movable in the axial direction, a flow passage is provided within the steel ball cavity in the circumferential direction of the steel ball, the upper opening of the steel ball cavity communicates with the exhaust cavity, and when the kettle body is placed on a horizontal surface, the storage cavity of the kettle body can communicate with the exhaust cavity via the lower opening of the steel ball cavity, the flow passage, and the upper opening of the steel ball cavity, and when the kettle body tips over, the steel balls roll to the upper opening of the steel ball cavity, closing the upper opening of the steel ball cavity.
[0009] Preferably, a steam passage is fixedly installed on the outer wall of the kettle body, the upper opening of the steam passage communicates with the exhaust cavity, and the temperature detection system is connected to the lower end of the steam passage.
[0010] Preferably, the installation of the handle weight increase includes increasing the weight of the handle by increasing the density of the handle material, increasing the weight of the handle by increasing the volume of the handle, or increasing the weight of the handle by adding a weight member inside the handle.
[0011] Preferably, a flow rate limiting unit is installed at the end opening of the long pipe spout to reduce the size of the end opening of the long pipe spout.
[0012] Preferably, the flow rate limiting unit is a baffle plate, the baffle plate is fixedly installed at the end opening of the long pipe spout, and the baffle plate is positioned to cover a portion of the end opening of the long pipe spout.
[0013] Preferably, two opposing telescopic sliding grooves are provided in the side wall of the lid, and one telescopic locking lever is slidably provided in each of the telescopic sliding grooves, and two opposing locking grooves are provided in the inner wall of the upper opening of the storage cavity, and each of the locking grooves corresponds to one telescopic locking lever, and the telescopic locking levers are fixedly connected to the lid and the kettle body by being inserted into the locking grooves.
[0014] Preferably, a receiving boss is installed in the upper opening of the storage cavity, and a receiving ring surface is provided on the lid, so that when the lid closes the upper opening of the storage cavity, the receiving ring surface is positioned on the receiving boss. [Effects of the Invention]
[0015] Compared to conventional technology, the present invention has the following beneficial effects: The spill-proof kettle of the present invention, through the weight-bearing design of the handle, brings the center of gravity of the kettle body closer to the handle. When the kettle body is placed upside down on a flat surface, a portion of the handle comes into contact with the surface, causing the long spout to tilt upwards, meaning the end opening is at the top. This design reduces the amount of hot water that spills out of the long spout when the kettle body is tipped over. Furthermore, the lid is equipped with a steam valve that closes the steam passage when the kettle body is tipped over, thus preventing spills. The kettle body maintains a pressure balance with the outside through the steam passage on the lid before tipping over. When the kettle body tips over, the steam passage is closed, so the storage cavity of the kettle body communicates with the outside only through the long spout, and the hot water inside the kettle body cannot overflow from the long spout due to the obstruction of external atmospheric pressure. The closure of the steam passage on the lid and the weight-bearing placement of the handle work together to reduce the amount of hot water that spills when the kettle body tips over, thereby improving safety for the user. [Brief explanation of the drawing]
[0016] To further clarify embodiments of the present invention or technical means in the prior art, the drawings necessary for use in this embodiment will be briefly described below. However, these drawings represent only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative activity.
[0017] [Figure 1] This is a schematic diagram showing the overall structure of the spill-proof kettle according to the present invention. [Figure 2] This is a schematic diagram showing the spill-proof kettle structure of the spill-proof kettle according to the present invention, which has a long spout with a baffle plate. [Figure 3] This is a schematic diagram showing the structure of the fitting and connecting position between the lid and the kettle body in the spill-proof kettle according to the present invention. [Figure 4] This is an exploded perspective view showing the structure of the spill-proof kettle according to the present invention, with the lid and kettle body in the open position. Detailed Description of the Invention
[0018] Hereinafter, the technical means in the embodiments of the present invention will be described in more detail with reference to the accompanying drawings and embodiments. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0019] An object of the present invention is to solve the problems existing in the prior art, and to provide an anti-spill kettle that reduces the amount of hot water spilling when tipped over and improves user safety.
[0020] In order to make the above objects, features and advantages of the present invention clearer and easier to understand, the following further detailed description will be given in combination with the drawings and specific embodiments.
[0021] Embodiment 1 In this embodiment, a spill-proof kettle is provided, as shown in Figures 1 to 4. The spill-proof kettle comprises a kettle body 10, a lid 20, and a heating base 30. The kettle body 10 has a storage cavity and an upper opening communicating with the storage cavity. The lid 20 is airtight and fixedly installed on the upper opening. When placed on a horizontal surface, the kettle body 10 has a circular cross-sectional shape in the horizontal plane. A long spout 11 and a handle 12 are arranged on the outer wall of the kettle body 10. The long spout 11 is positioned opposite the handle 12. The weight of the handle 12 is increased so that the center of gravity of the kettle body 10 is closer to the handle 12. As a result, when the kettle body 10 tips over onto the surface on which it is placed, the position of the kettle body 10 with the handle 12 partially contacts the surface on which it is placed. The long spout 11 is positioned in an upward-tilting position, with the end opening of the long spout 11 located at the highest point of the long spout 11, and the lid 20 is installed so as to offset the center of gravity, and the center of gravity offset of the lid 20 brings the center of gravity of the kettle body 10 closer to the handle 12, a steam passage is installed in the lid 20, and a steam valve is installed in the steam passage, and the storage cavity of the kettle body 10 when placed on a horizontal surface can communicate with the outside through the steam passage, and when the kettle body 10 tips over, the steam valve can close the steam passage to prevent the liquid in the storage cavity from flowing out from the steam passage, and the kettle body 10 is arranged to be placed on a heating base 30 for heating the water inside the kettle body, and the cross-sectional shape of the heating base 30 on a horizontal plane is circular.
[0022] Through the weighted design of the handle 12, the center of gravity of the kettle body 10 is moved closer to the handle 12. When the kettle body 10 is placed overturned on a flat surface, a portion of the handle 12 comes into contact with the flat surface, so that the long spout 11 assumes an upwardly inclined posture, that is, the distal opening faces upward. With such a design, the amount of hot water inside the kettle body 10 that overflows from the long spout 11 when the kettle overturns can be reduced. The lid part 20 is provided with a steam valve that closes the steam passage when the kettle body 10 overturns, so that the kettle body 10 can maintain pressure balance with the outside through the steam passage on the lid part 20 before overturning. When the kettle body 10 overturns, the steam passage is closed, so the receiving cavity of the kettle body 10 communicates with the outside only through the long spout 11, and the hot water inside the kettle body 10 cannot overflow from the long spout 11 due to the obstruction of the external atmospheric pressure. Through the mutual cooperation between the closing of the steam passage on the lid part 20 during overturning and the weighted installation of the handle 12, the amount of hot water that overflows when the kettle body 10 overturns can be reduced, and the safety for users can be improved.
[0023] Herein, the relevant arrangement of the lid part 20 will be described below.
[0024] In an optional embodiment of the present invention, more preferably as shown in Figures 1 and 3, an exhaust cavity 21 is provided in the lid 20, the lower opening of the exhaust cavity 21 is in communication with the storage cavity, and the upper opening of the exhaust cavity 21 is in communication with the outside, the exhaust cavity 21 forms a steam passage, and the steam valve includes a steel ball cavity 22 and a steel ball 23, the steel ball cavity 22 is fixedly installed inside the exhaust cavity 21, the lower opening of the steel ball cavity 22 is in communication with the lower opening of the exhaust cavity 21, and the steel ball 23 is inside the steel ball cavity 22 The steel ball 23 is positioned and movable in the axial direction of the steel ball cavity 22, a flow passage is provided within the steel ball cavity 22 in the circumferential direction of the steel ball 23, the upper opening of the steel ball cavity 22 communicates with the exhaust cavity 21, and the storage cavity of the kettle body 10 when placed on a horizontal surface can communicate with the exhaust cavity 21 via the lower opening of the steel ball cavity 22, the flow passage and the upper opening of the steel ball cavity 22, and when the kettle body 10 tips over, the steel ball 23 rolls to the upper opening of the steel ball cavity 22, closing the upper opening of the steel ball cavity 22.
[0025] Specifically, multiple support plates 221 are fixed to the inner circumferential side wall of the steel ball cavity 22, and there is a gap between each pair of adjacent support plates 221, which is part of the flow passage. Furthermore, when the kettle body 10 is placed on a horizontal surface and the steel balls 23 of the lid 20 are in their lowest position, the lower opening of the steel ball cavity 22 is still in communication with the flow passage.
[0026] The installation of the kettle body 10 is described below.
[0027] In an optional embodiment of the present invention, the installation of a weight increase for the handle 12 more preferably includes increasing the weight of the handle 12 by increasing the density of the material of the handle 12, increasing the volume of the handle 12, or adding a weight member 121 inside the handle 12.
[0028] Specifically, the installation of the weight increase for the handle 12 includes, but is not limited to, the weight increase methods described above.
[0029] In a selectable embodiment of the present invention, more preferably as shown in Figures 1 and 2, when the kettle body 10 is placed on a horizontal surface, the outer diameter of the upper end of the kettle body 10 is smaller than the outer diameter of the lower end of the kettle body 10, the outer wall of the upper end of the kettle body 10 and the outer wall of the lower end of the kettle body 10 are connected in a curved shape, and the weight of the handle 12 is increased and installed so that the center of gravity of the kettle body 10 is closer to the side of the upper end of the kettle body 10 that has the handle 12.
[0030] In an optional embodiment of the present invention, more preferably as shown in Figure 1, the steam passage 15 is fixedly installed on the outer wall of the kettle body 10, the upper end opening of the steam passage 15 communicates with the exhaust cavity 21, and the temperature detection system is connected to the lower end of the steam passage 15.
[0031] Specifically, a protective cover 16 is provided outside the outer wall of the kettle body 10 in the steam passage 15, and the handle 12 is fixed to this protective cover 16.
[0032] Specifically, the temperature detection system is used in conjunction with the heating control switch, enabling actions such as the automatic shut-off of the heating control switch after the desired temperature is reached. In the case of a steam switch, the heating function is turned off after the set temperature is reached. In addition to the steam switch, the temperature detection system may also include a display and a temperature sensor. The temperature sensor is used to measure the steam temperature, and the display is used to show the measured steam temperature. When the steam temperature measured by the temperature sensor reaches the set temperature, the steam switch is activated to turn off the heating function.
[0033] Specifically, the spill-proof kettle according to an embodiment of the present invention has a version with a small spout and a version with a large spout. In the version with a small spout, the diameter of the long spout 11 is small, so the cross-sectional area of the hole in the long spout 11 is 38 mm². 2 In the following case, it is not necessary to install a flow limiting unit at the end opening of the long pipe spout 11. However, in the case of the larger spout version, the diameter of the long pipe spout 11 is also larger, so a flow limiting unit is installed at the end opening of the long pipe spout 11.
[0034] In a selectable embodiment of the present invention, more preferably, as shown in Figure 2, a flow rate limiting unit is provided at the end opening of the long pipe spout 11, and the flow rate limiting unit is used to reduce the size of the end opening of the long pipe spout 11.
[0035] In a selectable embodiment of the present invention, more preferably as shown in Figure 2, the flow limiting unit is a baffle plate 111, the baffle plate 111 is fixedly installed at the end opening of the long pipe spout 11, and the baffle plate 111 is positioned to cover a portion of the end opening of the long pipe spout 11.
[0036] Specifically, the flow limiting unit may be a baffle plate 111 fixed to the end opening of the long pipe spout 11, or a half stopper provided at the end opening of the long pipe spout 11. The half stopper is rotatably mounted at the end opening of the long pipe spout 11, and can close a portion of the opening of the long pipe spout 11 by magnetic attraction. Furthermore, in order to release the attraction due to the impact of the water flow inside the long pipe spout 11 during normal use, and to improve the ability of the half stopper to be correctly magnetically attracted to the opening of the long pipe spout 11 without being attracted to the outer wall of the long pipe spout 11 in the opposite direction, a restricting structure such as a restricting lever may be provided at the rotation position of the half stopper to restrict the half stopper from rotating in the opposite direction around its rotation axis and being attracted to the outer wall of the long pipe spout 11.
[0037] This section will explain the installation of the connection structure between the kettle body 10 and the lid 20.
[0038] In an optional embodiment of the present invention, more preferably as shown in Figures 1 and 3, a receiving boss 13 is installed in the upper opening of the kettle body 10, and a receiving ring surface is provided on the lid 20, so that when the upper opening of the kettle body 10 is closed, the receiving ring surface is positioned on the receiving boss 13.
[0039] In an optional embodiment of the present invention, more preferably as shown in Figures 1, 3, and 4, an elastically deformable seal ring 14 (if made of rubber) is fixedly installed in the upper opening of the kettle body 10, the inner diameter of the seal ring 14 being smaller than the inner diameter of the lower end of the lid 20, and the outer diameter of the seal ring 14 being larger than the inner diameter of the lower end of the lid 20. When the lid 20 is sealed and fixed to the upper opening, the lower end of the lid 20 abuts against the upper end of the seal ring 14 (the portion of the seal ring 14 that fits with the lid 20 is provided at an angle, and the lower end of the lid 20 is pressed against the upper surface of the seal ring 14).
[0040] In an optional embodiment of the present invention, more preferably as shown in Figures 1, 3, and 4, two opposing telescopic sliding grooves are provided in the side wall of the lid portion 20, and one telescopic locking lever 24 is slidably provided in each telescopic sliding groove, and two opposing locking grooves are provided in the inner wall of the upper opening of the kettle body 10, and each locking groove corresponds to one telescopic locking lever 24, and the telescopic locking lever 24 is inserted into the locking groove, thereby permanently connecting the lid portion 20 and the kettle body 10.
[0041] Specifically, one end of each of the two telescopic locking levers 24 located near the axis of the lid 20 is an operating end 241, and a spring 25 is provided between the two operating ends 241. In its natural state, the two telescopic locking levers 24 are extended. A storage groove 26 and an operating opening communicating with the storage groove 26 are provided at the upper end of the lid 20. The operating ends 241 of the telescopic locking levers 24 can be pushed deep into the storage groove 26 by passing through this operating opening. By positioning the operator's fingers inside the storage groove 26 and pushing the operating ends 241 in the opposite direction, the telescopic locking levers 24 can be retracted, releasing the connection between the lid 20 and the kettle body 10.
[0042] Other related matters will be explained below.
[0043] Specifically, the spill-proof kettle provided in this embodiment can meet the requirements of the technical standards of Japan's Electrical Appliances and Materials Safety Act, meaning that under the required test conditions, the amount of hot water spilled meets the requirements of the test standard. (For example, the amount of water spilled within 10 seconds after tipping over does not exceed 50 grams.)
[0044] Specifically, a heating base 30 is provided for use in combination with the kettle body 10. The heating base 30 is used to heat the water inside the kettle body 10, but this is a well-known technique, so we will not elaborate further here.
[0045] Specifically, the heating base 30 is circular, and even if the entire assembly, including the heating base 30, kettle body 10, and lid 20, were to tip over, the objective of reducing overflow could still be achieved.
[0046] Specifically, in the spill-proof kettle provided in this embodiment, other related structures not mentioned are, for example, a heating element provided at the bottom of the kettle body 10 used in combination with the heating base 30. Since this is known technology, further explanation will be omitted here.
[0047] This invention has been described using specific examples to illustrate its principles and embodiments. The above-described examples of embodiments are merely to aid in understanding the methods and core ideas of the invention, and at the same time, those skilled in the art can modify the specific embodiments and scope of application based on the ideas of the invention. As stated above, the contents of this specification should not be construed as limiting the invention. [Explanation of symbols]
[0048] 10 Kettle body 11 Long spout 111 Baffle board 12 Handles 121 Weight Member 13 Receiving Boss 14 Seal rings 15 Steam flow passage 16 protective cover 20 Lid 21 Exhaust Cavity 22 Steel Ball Cavity 221 Support plate 23 steel ball 24. Telescopic locking lever 241 Control end 25 Springs 26 Idle groove 30 Heating base
Claims
1. A spill-proof kettle comprising a kettle body, a lid, and a heating base, The kettle body has a storage cavity, the lid is airtight and fixedly installed in the upper opening of the storage cavity, and when placed on a horizontal surface, the kettle body has a circular cross-sectional shape in the horizontal plane. A long spout and a handle are arranged on the outer wall of the kettle body, and the long spout is positioned to face the handle. By increasing the weight of the handle so that the center of gravity of the kettle body is closer to the handle, when the kettle body tips over onto the surface on which it is placed, the part of the kettle body with the handle will partially contact the surface on which it is placed, the long spout will be in an upward-tilted position, and the end opening of the long spout will be at the highest point of the long spout. The lid is positioned so as to be offset from the center of gravity, and this offset brings the center of gravity of the kettle body closer to the handle; a steam passage is provided in the lid; a steam valve is provided in the steam passage; the storage cavity of the kettle body, when placed on a horizontal surface, can communicate with the outside through the steam passage; and when the kettle body tips over, the steam valve can close the steam passage to prevent the liquid in the storage cavity from flowing out from the steam passage. A spill-proof kettle characterized in that the kettle body is arranged to be placed on the heating base for heating the water inside the kettle body, and the cross-sectional shape of the heating base in the horizontal plane is circular.
2. An elastically deformable seal ring is fixedly installed in the upper opening of the storage cavity, the inner diameter of the seal ring is smaller than the inner diameter of the lower end of the lid, and the outer diameter of the seal ring is larger than the inner diameter of the lower end of the lid. The spill-proof kettle according to claim 1, characterized in that when the lid is sealed and fixed to the upper opening of the storage cavity, the lower end of the lid abuts against the upper end of the sealing ring.
3. When the kettle body is placed on a horizontal surface, the outer diameter of the upper end of the kettle body is smaller than the outer diameter of the lower end of the kettle body, and the outer wall of the upper end of the kettle body and the outer wall of the lower end of the kettle body are connected in a curved shape. The spill-proof kettle according to claim 1, characterized in that the weight of the handle is increased and installed so that the center of gravity of the kettle body is closer to the side of the upper end of the kettle body where the handle is located.
4. An exhaust cavity is installed in the lid, the lower opening of the exhaust cavity is capable of communicating with the storage cavity, and the upper opening of the exhaust cavity is capable of communicating with the outside, and the exhaust cavity forms the steam passage. The spill-proof kettle according to claim 1, wherein the steam valve includes a steel ball cavity and a steel ball, the steel ball cavity is fixedly installed within the exhaust cavity, the lower opening of the steel ball cavity communicates with the lower opening of the exhaust cavity, the steel ball is located within the steel ball cavity and is movable in the axial direction of the steel ball cavity, a flow passage is provided within the steel ball cavity in the circumferential direction of the steel ball, the upper opening of the steel ball cavity communicates with the exhaust cavity, the storage cavity of the kettle body when placed on a horizontal surface can communicate with the exhaust cavity via the lower opening of the steel ball cavity, the flow passage and the upper opening of the steel ball cavity, and when the kettle body tips over, the steel ball rolls to the upper opening of the steel ball cavity, thereby closing the upper opening of the steel ball cavity.
5. The spill-proof kettle according to claim 4, characterized in that a steam passage is fixedly installed on the outer wall of the kettle body, the upper end opening of the steam passage communicates with the exhaust cavity, and the temperature detection system is connected to the lower end of the steam passage.
6. The spill-proof kettle according to claim 1, characterized in that the installation of the handle weight increase includes increasing the weight of the handle by increasing the density of the material of the handle, increasing the weight of the handle by increasing the volume of the handle, or increasing the weight of the handle by adding a weight member inside the handle.
7. The spill-proof kettle according to claim 1, characterized in that a flow rate limiting unit for reducing the size of the end opening of the long spout is installed at the end opening of the long spout.
8. The spill-proof kettle according to claim 7, characterized in that the flow rate limiting unit is a baffle plate, the baffle plate is fixedly installed at the end opening of the long pipe spout, and the baffle plate is arranged to cover a part of the end opening of the long pipe spout.
9. Two opposing retractable sliding grooves are provided in the side wall of the lid, and one retractable locking lever is slidably provided in each of the retractable sliding grooves. The spill-proof kettle according to claim 1, characterized in that two opposing locking grooves are provided on the inner wall of the upper opening of the storage cavity, each locking groove corresponds to one telescopic locking lever, and the lid and the kettle body are fixedly connected by inserting the telescopic locking lever into the locking groove.
10. A spill-proof kettle according to claim 1, characterized in that a receiving boss is installed in the upper opening of the storage cavity, a receiving ring surface is provided on the lid, and when the lid closes the upper opening of the storage cavity, the receiving ring surface is positioned on the receiving boss.