Dustproof kettle

Abstract

The embodiment of the utility model provides a dustproof kettle. The dustproof kettle comprises a kettle body; the spout is arranged on the outer side of the kettle body; the dustproof cover is rotatably connected with the kettle body or the spout through a rotating shaft, the dustproof cover comprises a cover plate, and the cover plate can cover the spout and can open the spout when the kettle body inclines so that water can be poured conveniently; when the cover plate covers the spout, the end, away from the kettle body, of the cover plate is lower than the horizontal plane where the center of the rotating shaft is located. According to the dustproof kettle, the end, far away from the kettle body, of the cover plate is arranged to be low, so that the gravity center of the dustproof cover can be as low as possible, the distance between the gravity center of the dustproof cover and the center of the rotating shaft is increased, namely, the gravity force arm of the dustproof cover is increased, and the dustproof cover is prevented from being damaged under the condition that the gravity of the dustproof cover is not changed. The automatic rotation torque of the dustproof cover is increased, the automatic opening and closing capacity of the dustproof cover is enhanced, and the dustproof cover can be smoothly and automatically opened.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to a dustproof kettle. Background Art

[0002] The spouts of electric kettles on the market are mostly open, which makes it easy for dust, insects, etc. to enter through the spout, affecting the user experience. In order to prevent dust and insects from entering the kettle body, some products have dust covers on the spouts. However, the dust covers in the related art use the impact of the water flow to open a gap, and the water flows out from the gap between the dust cover and the spout. During the water discharge process, the dust cover affects the water flow, which will cause the water flow to be unconcentrated, resulting in a poor user experience. In addition, there are also some products that require manual opening of the dust cover before pouring water. This method of pouring water is inconvenient, and directly touching the dust cover with your hands can easily contaminate the spout. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the above-mentioned prior art or related technology.

[0004] To this end, the first aspect of the present invention provides a dustproof kettle, comprising: a kettle body; a spout, arranged on the outside of the kettle body; a dustproof cover, rotatably connected to the kettle body or the spout via a rotating shaft, the dustproof cover comprising a cover plate, which can cover the spout and can open the spout when the kettle body is tilted to facilitate pouring water; when the cover plate is closed on the spout, the end of the cover plate away from the kettle body is lower than the horizontal plane of the center of the rotating shaft.

[0005] The dustproof kettle proposed in the embodiment of this aspect has a dustproof cover rotatably connected to the kettle body or the spout by a rotating shaft. The dustproof cover can open the spout when the kettle body is tilted to facilitate pouring water; when the dustproof kettle is in an upright state, the dustproof cover can cover the spout to prevent dust from entering the spout. The dustproof cover can also reduce the dissipation of heat in the kettle body, thereby increasing the heating speed when boiling water and heating it to a specified temperature more quickly. After the boiling water is finished, the cooling speed in the kettle body can also be reduced, and the heat preservation performance is better; further, when the cover plate is closed on the spout, the end of the cover plate away from the kettle body is lower than the center of the rotating shaft. By setting the end of the cover plate away from the kettle body lower, the gravity arm of the dustproof cover is increased, and then when the gravity of the dustproof cover remains unchanged, the torque of the automatic rotation of the dustproof cover is increased, and the automatic opening and closing ability of the dustproof cover is enhanced, which is conducive to the dustproof cover being able to open smoothly and automatically during the process of tilting the kettle body to pour water, thereby ensuring the reliability of the automatic opening and closing function of the dustproof cover.

[0006] In some embodiments, when the cover is closed over the spout, the cover tilts downward from the end closest to the kettle body to the end further away from the kettle body, with the end closer to the kettle body being higher than the horizontal plane of the top end of the rotating shaft. This arrangement allows the cover to be higher at the end closer to the kettle body and lower at the end further away from the kettle body, thus allowing the rotating shaft and other structures to be covered within the spout, resulting in a more rational structural arrangement.

[0007] In some embodiments, when the cover is closed on the spout, the angle between the line connecting the lowest point of the end of the cover away from the kettle body and the center of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

[0008] In these embodiments, the range of the angle can quantify the degree to which the end of the cover away from the kettle body is lower than the center of the rotating shaft. The angle is greater than 0° and less than or equal to 45°. On the one hand, it can ensure that the end of the cover away from the kettle body is lower than the center of the rotating shaft, which increases the gravity arm and enhances the automatic opening and closing ability of the dust cover, and can provide a better pouring experience; on the other hand, it can also avoid the angle being too large, preventing the center of gravity of the dust cover from being more inclined towards the spout when pouring water, which is not conducive to the automatic separation of the dust cover and the spout.

[0009] In some embodiments, the dust cover further includes: a counterweight portion detachably connected to the cover plate.

[0010] In these embodiments, the dust cover also includes a counterweight portion, and the center of gravity of the dust cover can be adjusted by adjusting the counterweight portion. It can be understood that in order to achieve a better counterweight effect, the counterweight portion and the cover plate are generally made of different materials, and the specific gravity of the counterweight portion is greater than the specific gravity of the cover plate. If the counterweight portion and the cover plate are designed as an integrated structure or a welded structure, the process is relatively complicated and the processing and production steps are many. The embodiment of this aspect arranges the counterweight portion to be detachably connected to the cover plate, which can simplify the assembly process between the counterweight portion and the cover plate, is beneficial to processing and production, and the counterweight portion can also be disassembled for cleaning, which is beneficial to the cleaning of the product.

[0011] In some embodiments, a water outlet is provided on the side wall of the kettle body, and the top of the water outlet is lower than the counterweight. This arrangement can ensure that the water flow does not contact the counterweight during pouring, the water flow is not affected by the dust cover, and the water flow is smooth and concentrated.

[0012] In some embodiments, the dust cover further comprises a leg connected to the cover plate, wherein when the dust cover is opened to a predetermined angle relative to the spout, the leg abuts against the spout to limit the opening angle of the dust cover. Thus, when the dust cover is opened to a maximum angle relative to the spout, the leg abuts against the spout, thereby limiting the maximum opening angle of the dust cover and preventing the dust cover from being opened too far.

[0013] In some embodiments, the kettle body has an upper opening, and the dust-proof kettle also includes a kettle lid, which covers the upper opening of the kettle body. When the legs are in contact with the spout, there is a gap between the cover and the top of the spout, so that the liquid overflowing through the gap between the kettle lid and the upper opening can enter the spout through the gap.

[0014] In these embodiments, when the kettle body is tilted at too large an angle to pour water or there is too much liquid in the kettle body, the water level will not exceed the top of the water outlet and may contact the kettle lid, and a small stream of water will flow out from the gap between the kettle lid and the kettle body. The small stream of water is named here as the kettle lid gap overflow water flow. The kettle lid gap overflow water flow can flow into the kettle spout through the gap between the cover plate and the top of the spout, and flow out together with the water flow in the spout, avoiding the kettle lid gap overflow water flow directly flowing onto the cover plate and causing water splashing.

[0015] In some embodiments, the dustproof kettle further comprises: a connecting base, the connecting base being provided with a receiving slot, the counterweight being mounted in the receiving slot, one of the connecting base and the counterweight being provided with a buckle protruding thereon, and the other being provided with a buckle hole adapted to fit the buckle, the buckle engaging with the buckle hole to connect the connecting base and the counterweight. With this arrangement, when the counterweight is pushed into the connecting base, the buckle and the buckle hole automatically engage, simplifying assembly between the counterweight and the connecting base; the connection between the two is completed upon installation, eliminating the need for additional connection steps and significantly saving assembly time.

[0016] In some embodiments, the radius of the rotating shaft is less than or equal to 3 mm. When the friction force on the rotating shaft is the same, the smaller the radius R of the rotating shaft, the more conducive it is to the automatic rotation of the dust cover. Therefore, the radius R of the rotating shaft is set to a range of R ≤ 3 mm.

[0017] In some embodiments, a crossbeam is provided on the top of the spout, and two downwardly protruding mounting plates are provided on the bottom surface of the crossbeam, and the rotating shaft is provided on the mounting plates. In this arrangement, the two mounting plates spaced apart on the bottom surface of the crossbeam are used to connect to the connecting seat, which has a simple structure and is easy to process and produce. The mounting plates are equivalent to a cantilever structure. The rotating shaft or the support shaft hole that cooperates with the rotating shaft is provided on the mounting plates, which is also conducive to assembly with the connecting seat. In actual assembly, the connecting seat can be forcibly inserted between the two mounting plates, so that the two mounting plates form a small amount of deformation outward, thereby allowing the rotating shaft to enter the support shaft hole, facilitating the assembly of the rotating shaft and the support shaft hole. Further, the mounting plates are provided on the bottom surface of the crossbeam, the rotating shaft or the support shaft hole is provided on the mounting plates, and the rotating shaft is installed in the support shaft hole. That is, the connecting seat, the rotating shaft and the support shaft hole are all located in the accommodating cavity formed by the kettle body, the spout and the cover plate, and are not easily affected by the outside world. Even if the cover plate and the kettle lid are opened, they will not contact the connecting seat, the rotating shaft and the rotating shaft position and other structures, thereby ensuring the reliability of the automatic opening and closing function of the dust cover.

[0018] In some embodiments, when the cover is closed on the spout, the center of gravity of the dust cover is located on the side of the water pouring port of the rotating shaft facing the spout, and the angle formed by the line between the center of gravity of the dust cover and the center of the rotating shaft and the vertical line passing through the center of the rotating shaft is less than or equal to the minimum tilt angle of the kettle body when pouring water. With this arrangement, the dust cover can be automatically opened as long as the kettle body is tilted to pour water, thereby realizing automatic opening of the dust cover. Specifically, when the user starts to pour water, as the kettle body tilts, the dust cover is also automatically opened by gravity. When the kettle body tilts to the minimum tilt angle of the kettle body when pouring water, the water flows out of the spout. Therefore, during the pouring process, the dust cover is opened first and the water flows out later. Therefore, the dust cover will not come into contact with the pouring water, making the water flow more concentrated and helping to ensure good hygiene and a smooth pouring experience. Furthermore, the center of gravity of the dust cover is located on the side of the rotating shaft facing the pouring port of the spout, so that the dust cover has a tendency to rotate in the opposite direction under the action of gravity. Therefore, after pouring, as the kettle body returns to an upright state, the dust cover can automatically rotate under the action of gravity and then cover the spout, preventing dust or foreign matter from entering the spout. It is convenient and hygienic to use, and there is no need to manually close the dust cover, which is convenient to use. In addition, setting the center of gravity of the dust cover on the side of the rotating shaft facing the pouring port of the spout can also ensure that the dust cover is in a closed state even if the kettle body is placed on a slightly tilted table. The spout can effectively support the dust cover while ensuring that the dust cover fits the spout.

[0019] Additional aspects and / or advantages of the present general inventive concept will be set forth in part in the following description, and some will be clear from the description or may be learned through practice of the present general inventive concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects and features of the present invention will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a schematic cross-sectional structure diagram of a dust-proof kettle along the longitudinal direction according to an embodiment of the present utility model;

[0022] Figure 2 This is a structural schematic diagram of a dust cover according to an embodiment of the present invention when the kettle body is placed vertically;

[0023] Figure 3 Schematic diagram comparing a cover plate in related art and a dust cover of an embodiment of the present invention when the kettle body is placed vertically;

[0024] Figure 4 This is a structural schematic diagram of a dust cover according to an embodiment of the present invention when the kettle body is tilted to the minimum pouring angle;

[0025] Figure 5 This is a schematic cross-sectional structure diagram of a dustproof kettle according to an embodiment of the present invention in a pouring state along the longitudinal direction;

[0026] Figure 6 This is a schematic cross-sectional view of the dustproof kettle according to one embodiment of the present invention in a state of pouring water at a large angle along the longitudinal direction;

[0027] Figure 7 Shown Figure 6 A local enlarged view of the K point in the middle;

[0028] Figure 8 This is a structural schematic diagram of a dust cover in which the counterweight portion is separated from the connecting seat according to an embodiment of the present utility model;

[0029] Figure 9 1 is another structural schematic diagram of a dust cover according to an embodiment of the present utility model;

[0030] Figure 10 This is a force diagram of the connecting seat and the counterweight after assembly according to an embodiment of the present utility model;

[0031] Figure 11 This is an exploded view of a dustproof kettle according to an embodiment of the present invention;

[0032] Figure 12 This is another exploded view of a dustproof kettle according to an embodiment of the present invention.

[0033] Figures 1 to 12 Description of Figure Numbers:

[0034] 10 kettle body, 101 water outlet, 110 kettle spout, 111 beam, 112 mounting plate, 113 support shaft hole, 120 kettle body inner liner, 130 gap,

[0035] 20 dust cover, 201 center of gravity of dust cover, 201a center of gravity of dust cover, 210 cover plate, 210a cover plate, 220 rotating shaft, 221 center of rotating shaft, 230 connecting seat, 231 notch, 232 support plate, 233 claw, 234 buckle hole, 235 opening, 236 bottom support, 240 counterweight, 242 buckle, 250 support leg,

[0036] I: Dust cover balance area, J: Dust cover covers the spout area, N: Water overflows from the gap in the lid. DETAILED DESCRIPTION

[0037] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be clear after understanding the disclosure of the present application. For example, the order of operations described herein is merely an example and is not limited to those orders set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, for greater clarity and conciseness, descriptions of features known in the art may be omitted.

[0038] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, which will become clear after understanding the disclosure of this application.

[0039] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0040] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions should not be limited by these terms. Instead, these terms are used solely to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, what is referred to as a first member, first component, first region, first layer, or first portion in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

[0041] In the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present therebetween. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present therebetween.

[0042] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term "plurality" represents any number of two and more than two.

[0043] The definitions of directional terms such as "upper", "lower", "top" and "bottom" in this application are based on the directional definitions when the product is in normal use and placed upright.

[0044] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art after understanding the present invention. Unless expressly defined otherwise herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present invention, and should not be interpreted in an idealized or overly formal manner.

[0045] Furthermore, in the description of examples, when it is deemed that a detailed description of well-known related structures or functions will cause an obscure interpretation of the present invention, such detailed description will be omitted.

[0046] The following will be combined Figures 1 to 12 The dustproof water bottle of some embodiments of the present application is described.

[0047] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the first aspect of the present invention provides a dustproof kettle, comprising: a kettle body 10; a spout 110, arranged on the outside of the kettle body 10; a dustproof cover 20, rotatably connected to the kettle body 10 or the spout 110 via a rotating shaft 220, the dustproof cover 20 comprising a cover plate 210, the cover plate 210 being able to cover the spout 110, and being able to open the spout 110 when the kettle body 10 is tilted to facilitate pouring water; when the cover plate 210 is closed on the spout 110, when the dustproof kettle is in a vertical state, the end of the cover plate 210 away from the kettle body 10 is lower than the horizontal plane of the center 221 of the rotating shaft.

[0048] The dustproof kettle proposed in the embodiment of this aspect has a dustproof cover 20 that is rotatably connected to the kettle body 10 or the spout 110 through a rotating shaft 220. The dustproof cover 20 can open the spout 110 when the kettle body 10 is tilted to facilitate pouring water; when the dustproof kettle is in an upright state, the dustproof cover 20 can cover the spout 110 to prevent dust from entering the spout 110. The dustproof cover 20 can also reduce the dissipation of heat in the kettle body 10, thereby increasing the heating speed when boiling water and heating it to a specified temperature more quickly. After the boiling water is finished, the cooling speed in the kettle body 10 can also be reduced, thereby improving the heat preservation performance. 0 When the cover is closed on the spout 110 and the dustproof kettle is placed vertically, the end of the cover 210 away from the kettle body 10 is lower than the horizontal plane of the center 221 of the rotating shaft. By setting the end of the cover 210 away from the kettle body 10 lower, the gravity arm of the dustproof cover 20 is increased, and then when the gravity of the dustproof cover 20 remains unchanged, the torque of the automatic rotation of the dustproof cover 20 is increased, and the automatic opening and closing ability of the dustproof cover 20 is enhanced, which is conducive to the dustproof cover 20 being able to open smoothly and automatically during the process of tilting the kettle body 10 to pour water, thereby ensuring the reliability of the automatic opening and closing function of the dustproof cover 20.

[0049] like Figure 4 As shown, when pouring water from the kettle body 10, before the dust cover 20 begins to rotate automatically, it is affected by the following forces: 1) the support force F1 of the spout 110 on the cover plate 210, with a lever arm of L1. As the kettle body 10 rotates clockwise, F1 approaches zero. 2) the friction force F2 of the support shaft hole 113 on the rotating shaft 220, with a lever arm of R. 3) the weight F3 of the dust cover 20 itself, with a lever arm of L3, which is the distance between the center of gravity 201 of the dust cover and the perpendicular bisector of the rotating shaft 220.

[0050] Torque (M): The product of force (F) and lever arm (L). That is, M = F x L. L is the distance from the rotating shaft 220 to the force, and F is the vector force. Therefore, the friction torque is the product of the friction force and the friction lever arm, where R is the friction lever arm.

[0051] The dust cover 20 maintains torque balance before it starts to rotate automatically. As the kettle body 10 rotates, F1 can rotate to a position infinitely close to 0. At this time, the dust cover 20 is at the critical point of the open state. In this state, we can obtain the torque M of the automatic rotation of the dust cover 20 as: M=F3ⅹL3-F2ⅹR.

[0052] Therefore, it can be concluded that, assuming the weight F3 of the dust cover 20 remains constant, the larger the lever arm L3, the greater the moment M of the automatic rotation of the dust cover 20 under the action of gravity. While maintaining the size of the cover 210 constant, a larger gravity lever arm L3 can be achieved by positioning the dust cover 20 at a lower distance from the kettle body than the center 221 of the rotating shaft.

[0053] Furthermore, if Figure 4 As shown, the relationship between the gravity arm L3 and the distance L5 between the dust cover's center of gravity 201 and the center of the rotating shaft 221 is: L3 = L5 x sina, where a is the angle between the line connecting the dust cover's center of gravity 201 and the center of the rotating shaft 221 and the vertical line passing through the center of the rotating shaft 221, when the kettle body 10 is at the minimum tilt angle for pouring. Specifically, when the kettle body 10 is tilted for pouring, the dust cover's center of gravity 201 is already deflected to the side of the vertical line passing through the center of the rotating shaft 221 closer to the kettle body 10 before the dust cover 20 begins to automatically rotate, forming an angle a°. The minimum tilt angle of the kettle body 10 for pouring is the angle at which the kettle body 10 needs to be tilted to just pour the water when the liquid in the kettle reaches the rated maximum water level. According to M = F3 x L3 - F2 x R, we can obtain: M = F3 x L5 x sina - FxR.

[0054] As the kettle body 10 tilts, when the kettle body 10 rotates to the tilt angle a, the greater the distance L5 between the center of gravity 201 of the dust cover and the center 221 of the rotating shaft, the greater the torque M of the automatic rotation of the dust cover 20. The center of gravity 201 of the dust cover is always below the center 221 of the rotating shaft. Therefore, while ensuring that the size of the cover plate 210 remains unchanged, the lower the center of gravity of the dust cover 20 is, the better. In this embodiment, by making the farthest end of the dust cover 20 from the kettle body 10 lower than the horizontal plane of the center 221 of the rotating shaft, the center of gravity 201 of the dust cover is as low as possible, thereby achieving the largest possible L5. In turn, the larger the gravity arm L3, the greater the torque M of the automatic rotation of the dust cover 20 under the same gravity F3 of the dust cover 20, and the stronger the automatic opening and closing ability of the dust cover 20 driven by F3.

[0055] The following is a comparison with the accompanying drawings and the related art to illustrate the effect of the dust cover 20 being lower than the center 221 of the rotating shaft at one end away from the kettle body 10. Figure 3 As shown, Figure 3 The dotted line portion shows the location of the cover plate 210 in the related art. Figure 3 In the related art shown in FIG, one end of the cover plate 210a away from the kettle body 10 is higher than the horizontal plane where the center 221 of the rotating shaft is located, wherein the distance from the center of gravity 201a of the dust cover in the related art to the center 221 of the rotating shaft is L6. Figure 3The implementation part shows a structural schematic diagram of the dust-proof cover 20 of an embodiment of the present application. One end of the cover plate 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft. Among them, the distance from the center of gravity 201 of the dust-proof cover to the center 221 of the rotating shaft is L5. By comparing the position of the center of gravity 201a of the dust-proof cover in the related art with the position of the center of gravity 201 of the dust-proof cover in the embodiment of the present application, it can be known that the center of gravity 201a of the dust-proof cover in the related art has moved upward relative to the center 221 of the rotating shaft. That is to say, the distance from the center of gravity 201a of the dust-proof cover to the center 221 of the rotating shaft has become smaller, that is, L6 < L5. Therefore, when the dust-proof covers 20 in the related art and the dust-proof cover 20 in this embodiment have the same deflection angle a, the lever arm L3 of the center of gravity 201a of the dust-proof cover in the related art will be smaller. For the dust-proof cover 20 of the same weight, F3ⅹL3 will also be smaller, and the ability to overcome external influences will be smaller, and the reliability of the automatic opening and closing of the dust-proof cover 20 will be smaller.

[0056] In addition, according to M = F3ⅹL3 - F2ⅹR, it can also be obtained that when the frictional force of the support shaft hole 113 on the rotating shaft 220 is the same, the smaller the radius R value of the rotating shaft 220, the more beneficial it is to the automatic rotation of the dust-proof cover 20. Therefore, the size range of the radius R of the rotating shaft 220 set in this embodiment of this aspect is R ≤ 3mm.

[0057] In order to facilitate the realization that one end of the cover plate 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft, in some embodiments, when the cover plate 210 is covered on the spout 110 and the dust-proof kettle is placed vertically, the cover plate 210 slopes downward from the end close to the kettle body 10 to the end away from the kettle body 10, and the end of the cover plate 210 close to the kettle body 10 is higher than the horizontal plane where the top end of the rotating shaft 220 is located. With such a setting, the end of the cover plate 210 close to the kettle body 10 is higher and the end away from the kettle body 10 is lower, so that structures such as the rotating shaft 220 can be covered in the spout 110, and the structure is more reasonable.

[0058] In some embodiments, the cover plate 210 can be a plane or a curved surface. It should be noted that when the cover plate 210 is a curved surface, it means that the cover plate 210 is an arc-shaped panel with a certain thickness. That is, the upper surface and the lower surface of the cover plate 210 are curved surfaces, and the upper edge and the lower edge of the cross-section of the cover plate 210 along the vertical direction are both arc-shaped lines.

[0059] As Figure 3 shown, in some embodiments, when the cover plate 210 is covered on the spout 110, the included angle H between the connection line between the lowest point of the end of the cover plate 210 away from the kettle body 10 and the center 221 of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

[0060] In these embodiments, the range of the angle H can quantify the extent to which the end of the cover 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft. The angle H is greater than 0° and less than or equal to 45°. On the one hand, it can ensure that the end of the cover 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft, thereby increasing the gravity arm and enhancing the automatic opening and closing ability of the dust cover 20, thereby providing a better water pouring experience. On the other hand, it can also avoid the angle H being too large, thereby preventing the center of gravity 201 of the dust cover from being more inclined toward the spout 110 when pouring water, which is not conducive to the automatic separation of the dust cover 20 from the spout 110.

[0061] In some embodiments, as Figure 1 、 Figures 5 to 12 As shown, the dust cover 20 also includes: a counterweight portion 240, which is detachably connected to the cover plate 210, the counterweight portion 240 is located in the spout 110, the counterweight portion 240 is connected to the side of the cover plate 210 facing the kettle body 10, and the counterweight portion 240 is arranged adjacent to the kettle body 10.

[0062] In these embodiments, the dust cover 20 also includes a counterweight portion 240, and the center of gravity 201 of the dust cover can be adjusted by adjusting the counterweight portion 240. It can be understood that in order to achieve a better counterweight effect, the counterweight portion 240 and the cover plate 210 are generally made of different materials, and the specific gravity of the counterweight portion 240 is greater than the specific gravity of the cover plate 210. If the counterweight portion 240 and the cover plate 210 are designed as an integrated structure or a welded structure, the process is relatively complicated and there are many steps in the processing and production. In this embodiment, the counterweight portion 240 is detachably connected to the cover plate 210, which can simplify the assembly process between the counterweight portion 240 and the cover plate 210, which is beneficial to processing and production. In addition, the counterweight portion 240 can also be disassembled for cleaning, which is beneficial to the cleaning of the product.

[0063] Furthermore, the counterweight 240 is disposed adjacent to the inner liner 120 of the kettle body, so that the counterweight 240 is closer to the inner liner 120 and the center of gravity of the counterweight 240 is also offset more toward one side of the inner liner 120. This allows the center of gravity 201 of the dust cover to be closer to the vertical line passing through the center 221 of the rotating shaft through the counterweight 240 of the same weight and size, thereby facilitating the dust cover 20 to automatically open as soon as possible during the process of tilting the kettle body 10 to pour water. Furthermore, the counterweight 240 is disposed in the accommodating cavity so that the counterweight 240 can be protected by the spout 110, the kettle body 10 and the cover 210, making it less susceptible to external influences. Even if the cover 210 and the kettle lid are opened, the counterweight 240 will not be affected, thereby ensuring the reliability of the automatic opening and closing function of the dust cover 20.

[0064] The dustproof kettle proposed in this embodiment can solve the problems in the related art where the center of gravity 201 of the dustproof cover is set at an unreasonable position, requiring a large tilt angle to open the dustproof cover 20 during pouring, which is laborious and difficult to operate. Furthermore, the dustproof kettle needs to use a large and heavy counterweight 240 to adjust the center of gravity 201 of the dustproof cover to achieve a reasonable tilt angle for pouring water.

[0065] The principle of the setting position of the counterweight part 240 is analyzed as follows: Figure 3 As shown, to facilitate the following analysis, the perpendicular midline of the dust cover 20 about the rotation axis 220, when the kettle body 10 is normally placed vertically, is divided into two left and right regions. The portion closer to the kettle body 10 is called the dust cover balance region I, and the portion farther from the kettle body 10 is called the dust cover spout obstruction region J. When pouring water, the kettle body 10 tilts toward the spout 110 relative to the vertical. The height h of the space inside the spout 110 that allows water to flow smoothly is the distance from the lowest point of the dust cover balance region I to the inner wall of the spout 110. The value of h is affected by the dimension X between the farthest end of the dust cover balance region I and the center 221 of the rotation axis. For the same spout 110 structure, the larger the value of X, the smaller the value of h. To ensure water flow speed and convenient pouring for the user, a larger h value is better. Therefore, it is necessary to limit the value of X as much as possible to ensure a sufficient h value to meet the requirement of fast pouring.

[0066] like Figure 3 As shown, when the kettle body 10 is placed normally, the center of gravity 201 of the dust cover is on the right side of the vertical line passing through the center 221 of the rotating shaft, forming an angle G. Figure 4 As shown, when the kettle body 10 is tilted for pouring, the dust cover 20's center of gravity 201 has already shifted to the left of a vertical line passing through the center 221 of the rotating shaft before it begins to rotate automatically, forming an angle a°. Therefore, the clockwise rotation angle of the kettle body 10 from the time the kettle body 10 is normally placed to the time the dust cover 20 begins to rotate automatically is: P = G + a.

[0067] In order to enable the dust cover 20 to automatically open as soon as possible, the smaller the P value, the better. That is, if the a value remains unchanged, the smaller the angle G, the better. In other words, the closer the center of gravity 201 of the dust cover is to the vertical line passing through the center 221 of the rotating shaft, the better. At the same time, when the size of the spout 110 is predetermined, the X value should be limited as much as possible to ensure a sufficient h value to meet the requirement of fast pouring. Because there is no extra space in the spout 110 to extend the counterweight 240 to reduce the angle G in order to ensure the h value, the present application tries to move the counterweight 240 in the balance area I of the dust cover as far to the left as possible. In other words, the closer the counterweight 240 is to the kettle body 10, the more conducive it is for the dust cover 20 to automatically open as soon as possible.

[0068] In some embodiments, the counterweight 240 and the cover plate 210 are made of different materials, and the specific gravity of the counterweight 240 is greater than that of the cover plate 210. This makes it easier to adjust the center of gravity of the dust cover 20 by adjusting the position of the counterweight 240.

[0069] In some embodiments, for example, the counterweight 240 can be a metal block and the cover plate 210 can be a plastic part. The specific gravity of the metal block is much greater than that of the plastic part, which makes it easier to adjust the center of gravity of the dust cover 20 by adjusting the position of the counterweight 240. Of course, the cover plate 210 can also be made of metal sheets or other materials, which are not listed here.

[0070] In some embodiments, as Figure 5 、 Figure 6 and Figure 7 As shown, a water outlet 101 is provided on the side wall of the kettle body 10, and the top of the water outlet 101 is lower than the lowest point of the dust cover 20. This arrangement ensures that the water flow will not contact the dust cover 20 during the pouring process, and the water flow is not affected by the dust cover 20, and the water flow is smooth and concentrated.

[0071] like Figure 6 and Figure 7 As shown, when the kettle body 10 is tilted at a large angle to pour water, the water level will submerge the top of the water outlet 101. Since the top of the water outlet 101 is lower than the lowest point of the dust cover balance area I, as shown in FIG. Figure 7 , the water flow still does not touch the components of the dust cover 20, so that the water flow remains smooth.

[0072] In some embodiments, as Figure 1 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 12 As shown, the dust cover 20 also includes: a connecting seat 230, a receiving groove is provided in the connecting seat 230, the counterweight part 240 is installed in the receiving groove, and a notch 231 is provided on the side of the receiving groove facing the kettle body 10, so that the counterweight part 240 is adjacent to the kettle body 10 through the notch 231.

[0073] In these embodiments, the connection seat 230 is provided to provide an installation space for the counterweight portion 240, and a notch 231 is provided on the side of the accommodating groove facing the kettle body 120, so that the counterweight portion 240 can be adjacent to the kettle body 120 via the notch 231. That is, the connection seat 230 can install the counterweight portion 240 without affecting the counterweight portion 240 being close to the kettle body 120, and there is no need to set a connecting structure between the counterweight portion 240 and the kettle body 120 due to the need to install the counterweight portion 240, which is beneficial to ensure that the center of gravity of the counterweight portion 240 is close to the kettle body 120, thereby facilitating the dust cover 20 to automatically open as soon as possible.

[0074] In some embodiments, as Figure 1 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 12 As shown, the dust cover 20 further includes a support leg 250 connecting the cover plate 210 and the connection base 230. When the dust cover 20 is opened to a preset angle relative to the spout 110, the support leg 250 can abut against the spout 110 to limit the opening angle of the dust cover 20. In this manner, when the dust cover 20 is opened to the maximum angle relative to the spout 110, the support leg 250 abuts against the spout 110, thereby limiting the maximum opening angle of the dust cover 20 and preventing the dust cover 20 from being opened too far.

[0075] Further, as an example, optionally, a crossbeam 111 is provided on the top of the spout 110 , and when the dust cover 20 is opened to the maximum angle relative to the spout 110 , the legs 250 abut against the crossbeam 111 .

[0076] In some embodiments, the kettle body 10 has an upper opening, and the dust-proof kettle also includes a kettle lid, which covers the upper opening of the kettle body 10. When the legs 250 are in contact with the spout 110, there is a gap 130 between the cover 210 and the top of the spout 110, so that the liquid overflowing through the gap between the kettle lid and the upper opening can enter the spout 110 through the gap 130.

[0077] In these embodiments, when the kettle body 10 is tilted at a large angle to pour water or there is too much liquid in the kettle body 10, the water level will not exceed the top of the water outlet 101 and may contact the kettle lid. A small stream of water will flow out from the gap between the kettle lid and the kettle body 10. Here, this small stream of water is named as the kettle lid gap overflow water flow N. Figure 7 N in the middle shows the water flow N overflowing from the gap in the lid. The water flow N overflowing from the gap in the lid can flow into the spout 110 through the gap 130 between the cover plate 210 and the top of the spout 110, and flow out together with the water flow in the spout 110, avoiding the water flow N overflowing from the gap in the lid from directly flowing onto the cover plate 210 and causing water splashing.

[0078] In some embodiments, as Figure 8 、 Figure 9 As shown, the connecting seat 230 includes a support plate 232 and a claw 233. The claw 233 is arranged at the end of the support plate 232 extending along the circumferential direction of the kettle body 10. The claw 233 can cover the edge of the counterweight part 240. The claw 233 and the support plate 232 are enclosed to form a receiving groove.

[0079] In these embodiments, the connecting seat 230 includes a support plate 232 and claws 233 located at both ends of the support plate 232. The cross-sectional shape of the connecting seat 230 is generally C-shaped. The claws 233 are arranged at the end of the support plate 232 extending along the circumferential direction of the kettle body 10, so that the claws 233 can be arranged in the gap space between the circular kettle body inner liner 120 and the counterweight part 240, making full use of the gap space, thereby ensuring that the counterweight part 240 can be located as close to the kettle body inner liner 120 as possible. At the same time, the two ends of the counterweight part 240 can be covered by the C-shaped structure, so that the counterweight part 240 and the dust cover 20 can be reliably and effectively connected, ensuring the excellent performance of the dust cover 20 in automatically opening the cover, and ensuring the reliability of the structure.

[0080] In some embodiments, claws 233 are provided at both ends of the support plate 232 extending along the circumferential direction of the kettle body 10 , a gap 231 is formed between the two claws 233 , and the counterweight 240 is adjacent to the kettle body 10 via the gap 231 .

[0081] In some embodiments, the side of the connecting base 230 facing the kettle body 10 is a concave surface that matches the outer surface of the kettle body 10. In this way, the side of the connecting base 230 facing the kettle body 120 is set as a concave surface, so that the edge of the connecting base 230 can be more closely aligned with the kettle body 120, so that it is located in the gap between the circular kettle body 120 and the counterweight 240, making full use of the gap, thereby ensuring that the counterweight 240 can be located as close as possible to the kettle body 120, while allowing the counterweight 240 to be reliably and effectively connected to the dust cover 20, ensuring the excellent performance of the dust cover 20 in automatically opening, and ensuring the reliability of the structure.

[0082] In some embodiments, as Figure 8 、 Figure 9 As shown, the connecting base 230 also includes a base 236, which is arranged below the support plate 232 and connected to the support plate 232. The base 236 can support the counterweight portion 240, and a hollow area is provided on the base 236. With this arrangement, since the counterweight portion 240 is always subject to the force of gravity during use and has a tendency to fall downward, the base 236 can provide reliable upward support for the counterweight portion 240, ensuring stable reliability in hot and cold states, or when used at various angles. Furthermore, the base 236 is provided with a hollow area, which can allow condensed water in the connecting base 230 to quickly flow out through the hollow area, avoiding water accumulation in the connecting base 230.

[0083] In some embodiments, as an example, optionally, the bottom bracket 236 is distributed on both sides of the support plate 232 along the length direction, and the counterweight part 240 is supported by both ends, so that the counterweight part 240 is more stably stressed. Figure 10F6 and F7 represent the supporting force of the bottom bracket 236 on the counterweight 240. The disconnected structure in the middle of the bottom bracket 236 forms a hollow area, through which condensed water can quickly flow out, thus making the structure of the bottom bracket 236 simple and conducive to processing and production.

[0084] Further, with regard to the specific structure of the connecting seat 230, in some embodiments, as an example, optionally, each claw 233 includes a first connecting plate and a second connecting plate connected to each other, the first connecting plate being connected to the end of the support plate 232 in the length direction and extending toward the kettle body 10, reserving space for the thickness of the counterweight part 240, and the second connecting plate extending toward the center direction of the counterweight part 240, so that the cross-sectional shape of the connecting seat 230 is generally C-shaped, and a notch 231 is formed between the two second connecting plates, and the second connecting plates of the two claws 233 are both located in the gap space between the circular kettle body 10 and the counterweight part 240, so that the notch 231 is as close to the kettle body 10 as possible, thereby ensuring that the counterweight part 240 can be located as close to the kettle body 10 as possible.

[0085] Of course, the present solution is not limited to this. It is understandable that those skilled in the art can design the claws 233 to be other structures that are arranged on the edge of the first connecting plate and can cover the edge of the counterweight part 240. The number of claws 233 can be one or more, and multiple claws 233 can be distributed at intervals along the length direction of the edge of the support plate 232. The specific circumstances in this regard will not be listed one by one here, but they all fall within the scope of protection of this solution without departing from the present design concept.

[0086] Furthermore, the first connecting plate and the second connecting plate are in the shape of long strips. The long strips of the first connecting plate and the second connecting plate have a large area and a large contact area with the counterweight part 240, so that the two ends of the counterweight part 240 can be reliably wrapped and connected by the C-shaped structure, which can further ensure that the counterweight part 240 and the dust cover 20 can be reliably and effectively connected, ensuring the excellent performance of the dust cover 20 in automatically opening, and ensuring the reliability of the structure.

[0087] In some embodiments, one of the connecting base 230 and the counterweight 240 is provided with a protruding buckle 242, and the other is provided with a buckle hole 234 that matches the buckle 242. The buckle 242 and the buckle hole 234 engage to connect the connecting base 230 and the counterweight 240. In this configuration, when the counterweight 240 is pushed into the connecting base 230, the buckle 242 and the buckle hole 234 automatically engage, making the assembly between the counterweight 240 and the connecting base 230 simple. Once the weight 240 is in place, the connection between the two is completed without adding additional connection steps, which greatly saves assembly time.

[0088] Furthermore, in some embodiments, as an example, optionally, an opening 235 is provided on the top surface or bottom surface of the connecting seat 230 for the counterweight part 240 to be installed into the connecting seat 230. When the counterweight part 240 is pushed into the connecting seat 230 through the opening 235, the buckle 242 and the buckle hole 234 can be automatically buckled together, and assembly is simple.

[0089] Further, as an example, optionally, one of the buckle 242 and the buckle hole 234 is provided on the first connecting plate, and the other is provided on the side wall of the counterweight portion 240 .

[0090] In some embodiments, the buckle 242 is a bump, and the edge of the bump and the connection between the bump and the surface on which it is located are arc-shaped.

[0091] In these embodiments, the counterweight 240 is positioned by the engagement of the buckle 242 with the buckle hole 234, and the connection between the buckle 242 and the surface on which it is located is designed to be arc-shaped. This is to ensure that when the buckle 242 engages with the buckle hole 234, the buckle hole 234 can abut against the arc, so that the force at the contact position passes through the center of the arc and the force can be decomposed into horizontal force and vertical force. That is, the force can both support the counterweight 240 in the vertical direction and clamp the counterweight 240 in the horizontal direction, thereby forming a multi-dimensional fixation, ensuring that the counterweight 240 will not shake left and right after assembly, thereby achieving the consistency of the center of gravity of the cover plate 210 and the counterweight 240, ensuring the reliability of the automatic opening of the dust cover 20 for pouring water, and avoiding the unstable movement of the dust cover 20, which affects the pouring quality. Furthermore, designing the edge of the protrusion into an arc shape can make assembly smoother.

[0092] In some embodiments, the radius of the arc is greater than or equal to 0.5 mm, so that the range of the arc is large enough to ensure that the contact point between the buckle 242 and the buckle position falls within the range of the arc after assembly.

[0093] It is worth noting that the conventional buckle and buckle position are in plane contact, the force direction is vertically upward, and can only support the counterweight 240 upward, while the buckle hole and buckle position of this embodiment are in arc surface contact, the buckle 242 is composed of a curved surface with a fillet radius greater than 0.5mm, and the buckle hole 234 can abut against the arc, so that the force at the contact position passes through the center of the arc. Figure 10 As shown, the forces F4 and F5 of the contact surface between the buckle 242 and the buckle position are analyzed in the mating state. The force F4 can be decomposed into a horizontal force F41 and a vertical force F42. The force F5 can be decomposed into a horizontal force F51 and a vertical force F52. Compared with the planar contact between conventional buckles and buckles, the direction of the forces is more multidimensional, less susceptible to external forces, and more stable.

[0094] In some embodiments, as Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 As shown, a support shaft hole 113 is provided on one of the side walls of the kettle body 10 and the connecting base 230, and a rotating shaft 220 is provided on the other side wall. The rotating shaft 220 can be an integral structure or a separate structure with the connecting base 230 or the kettle body 10 in which it is located. The rotating shaft 220 is rotatably disposed in the supporting shaft hole 113, so that the dust cover 20 is rotatably connected to the kettle body 10. In this arrangement, the rotating shaft 220 and the connecting base 230 or the kettle body 10 are an integral structure. The integral structure has good mechanical properties and can improve the connection strength between the rotating shaft 220 and the connecting base 230 or the kettle body 10. In addition, the rotating shaft 220 and the connecting base 230 or the kettle body 10 can be made into an integral body for mass production. In addition, the integrity of the dust cover 20 is improved, the number of parts is reduced, and the installation process is shortened. Furthermore, the cooperation between the rotating shaft 220 and the supporting shaft hole 113 can ensure the free rotation of the rotating shaft 220, and the structure is simple and easy to install.

[0095] Although Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 The description is given in which the rotating shaft 220 is set on the connecting seat 230 and the support shaft hole 113 is set on the spout 110, but the present application is not limited to this. According to another aspect of the embodiment of the present application, the positions of the rotating shaft 220 and the support shaft hole 113 can be interchanged.

[0096] It can be understood that the rotating shaft 220 and the connecting seat 230 or the kettle body 10 on which it is located are an integrated structure, that is, when the rotating shaft 220 is set on the connecting seat 230, the rotating shaft 220 and the connecting seat 230 are an integrated structure; when the rotating shaft 220 is set on the kettle body 10, the rotating shaft 220 and the kettle body 10 are an integrated structure.

[0097] In some embodiments, the connecting base 230 is provided with a hole for receiving the rotating shaft 220, and the kettle body 10 is provided with a support shaft hole 113. The rotating shaft 220 is inserted into the rotating shaft 220 receiving hole and the support shaft hole 113, so that the dust cover 20 is rotatably connected to the kettle body 10. In this arrangement, the rotating shaft 220 is independently provided, the support shaft hole 113 is provided on the kettle body 10, and the rotating shaft 220 receiving hole is provided on the connecting base 230. The rotating shaft 220 is sequentially inserted into the rotating shaft 220 receiving hole and the support shaft hole 113. This can ensure the free rotation of the rotating shaft 220, and has a simple structure and is easy to install.

[0098] In some embodiments, as Figure 7 、 Figure 11 and Figure 12As shown, a crossbeam 111 is provided on the top of the spout 110, and two downwardly protruding mounting pieces 112 are provided on the bottom surface of the crossbeam 111. The rotating shaft 220 or the support shaft hole 113 is provided on the mounting pieces 112. In this arrangement, the two mounting pieces 112 spaced apart on the bottom surface of the crossbeam 111 and the rotating shaft 220 or the support shaft hole 113 provided thereon are used to connect with the connecting base 230. The structure is simple and easy to process and produce. The mounting pieces 112 are equivalent to a cantilever structure. The arrangement of the rotating shaft 220 or the support shaft hole 113 on the mounting pieces 112 also facilitates assembly with the connecting base 230. In actual assembly, the connecting base 230 can be forcibly inserted between the two mounting pieces 112, causing the two mounting pieces 112 to form a small amount of outward deformation, thereby allowing the rotating shaft 220 to enter the support shaft hole 113, facilitating assembly of the rotating shaft 220 with the support shaft hole 113. Furthermore, the mounting plate 112 is arranged on the bottom surface of the beam 111, the rotating shaft 220 or the support shaft hole 113 is arranged on the mounting plate 112, and the rotating shaft 220 is installed in the support shaft hole 113, that is, the connecting seat 230, the rotating shaft 220 and the support shaft hole 113 are all located in the accommodating cavity formed by the kettle body 10, the spout 110 and the cover plate 210, and are not easily affected by the outside world. Even if the cover plate 210 and the kettle lid are opened, they will not contact the connecting seat 230, the rotating shaft 220 and the rotating shaft 220 position and other structures, thereby ensuring the reliability of the automatic opening and closing function of the dust cover 20.

[0099] Although Figure 11 and Figure 12 The description is given by taking the example that the support shaft hole 113 is set on the mounting plate 112 and the rotating shaft 220 is set on the connecting seat 230, but the present application is not limited to this. According to another aspect of the embodiment of the present application, the positions of the rotating shaft 220 and the support shaft hole 113 can be interchanged.

[0100] In some embodiments, when the cover plate 210a 210 is closed onto the spout 110, the dust cover's center of gravity 201 is located on the side of the rotating shaft 220 facing the pouring opening of the spout 110. Furthermore, the angle formed by the line connecting the dust cover's center of gravity 201 and the center 221 of the rotating shaft with a vertical line passing through the center 221 of the rotating shaft is less than or equal to the minimum tilt angle of the kettle body 10 during pouring. This arrangement enables the dust cover 20 to automatically open whenever the kettle body 10 is tilted to pour water, thereby achieving automatic opening of the dust cover 20. Specifically, when the user begins pouring water, as the kettle body 10 tilts, the dust cover 20 automatically opens due to gravity. When the kettle body 10 is tilted to reach the minimum tilt angle of the kettle body 10 when pouring water, the water flows out from the spout 110. Therefore, during the pouring process, the dust cover 20 is opened first and then the water flows out. Therefore, the dust cover 20 will not come into contact with the poured water, making the water flow more concentrated and helping to ensure good hygiene and a smooth pouring experience.

[0101] Table 1 below shows experimental data comparing the ratio of water flow width to water flow thickness of the dustproof kettle 1 and the dustproof kettle 2 in the related art that uses water flow impact to open the dust cover 20 at the spout 110 during pouring, and the ratio of water flow width to water flow thickness of the dustproof kettle using the embodiment of the present application during pouring. The experimental data are carried out under the conditions of the same capacity and pot mouth diameter. It can be seen from the data in Table 3 that the dustproof kettle in the related art has a larger ratio of water flow width to water flow thickness during pouring, and the water flow is more dispersed. The water flow generally flows out in sheets, which is easier to spill when pouring the water in the kettle into the thermos; while the dustproof kettle in the embodiment of the present application has a more concentrated water flow during pouring, basically flows out in a columnar shape, and is not easy to spill.

[0102] Table 1

[0103] Test items Dust-proof kettle in related art 1 Dust-proof kettle in related art 2 Dust-proof kettle of this application Stream width to thickness ratio 2.2-2.8 3-3.5 1.0-1.5

[0104] Furthermore, the center of gravity 201 of the dust cover is located on the side of the rotating shaft 220 facing the pouring port of the spout 110, so that the dust cover 20 has a tendency to rotate in the opposite direction under the action of gravity. Therefore, after pouring, as the kettle body 10 returns to an upright state, the dust cover 20 can automatically rotate under the action of gravity and then cover the spout 110, preventing dust or foreign matter from entering the spout 110. It is convenient and hygienic to use, and there is no need to manually cover the dust cover 20, which is convenient to use. In addition, setting the center of gravity 201 of the dust cover on the side of the rotating shaft 220 facing the pouring port of the spout 110 can also ensure that the dust cover 20 is in a closed state even if the kettle body 10 is placed on a slightly tilted table. The spout 110 can effectively support the dust cover 20 while ensuring that the dust cover 20 fits the spout 110.

[0105] It is understandable that if Figure 4 As shown, the minimum tilt angle of the kettle body 10 during pouring is the angle at which the kettle body 10 needs to be tilted to just pour the water out when the liquid in the kettle reaches the rated maximum water level. The smaller the inner diameter, the larger the minimum tilt angle of the kettle body 10 during pouring. The height difference between the rated maximum liquid level and the spout 110 represents the splash-proof height. The larger the splash-proof height, the larger the minimum tilt angle of the kettle body 10 during pouring.

[0106] Principle description, such as Figure 3As shown, the angle formed by the line connecting the center of gravity 201 of the dust cover and the center 221 of the rotating shaft with the vertical line (mid-perpendicular line) passing through the center 221 of the rotating shaft is G, and the minimum tilting angle of the kettle body 10 when pouring water is P. As long as it is ensured that A < P, the dust cover 20 can be guaranteed to automatically open at the starting angle of pouring water. The specific description is as follows: The center of gravity 201 of the dust cover is close to the water outlet side of the spout 110. Therefore, in the normal state, as shown in Figure 3, the spout 110 is located on the right side of the kettle body 10. Under the action of gravity, the dust cover 20 has a tendency to rotate downward, so the dust cover 20 can cover the spout 110 and is supported by the spout 110; when the kettle body 10 is tilted to pour water, the spout 110 moves downward, and the right side of the dust cover 20 loses support. Under the action of gravity, it rotates clockwise around the rotating shaft 220 until the center of gravity 201 of the dust cover is below the mid-perpendicular line of the rotating shaft 220, and the dust cover 20 reaches equilibrium and stops rotating. When the kettle body 10 continues to be tilted to pour water, the spout 110 is separated from the dust cover 20, and the spout 110 is opened.

[0107] In the case where the kettle body 10 is tilted to pour water, the dust cover 20 rotates clockwise together with the kettle body 10. The angle formed by the center of gravity of the dust cover 20 and the vertical line passing through the center 221 of the rotating shaft is G. Therefore, when the rotating angle of the kettle body 10 is P, the rotating angle of the dust cover 20 relative to the rotating shaft 220 is P - G. The larger the value of P - G, the larger the opening angle of the dust cover 20 relative to the spout 110. Therefore, the closer the center of gravity 201 of the dust cover is to the vertical line passing through the center 221 of the rotating shaft, the smaller the angle G, the larger the value of P - G, and the larger the automatically opened angle of the dust cover 20. This can ensure that the water poured out from the spout 110 does not contact the dust cover 20, and the water flow will be smoother.

[0108] If it is contrary to this solution: If the center of gravity of the dust cover 20 is far from the vertical line passing through the center 221 of the rotating shaft and the value of G is too large, when G > P, under the action of gravity, when the tilting angle of the kettle body 10 is P, the dust cover 20 will always follow the spout 110, and the dust cover 20 needs to be pushed by the flowing water to be opened. At this time, the dust cover 20 has an obstructive effect on the water flow, the water flow will not be concentrated, and the pouring experience is very poor.

[0109] As Figure 9 shown, when the water level in the kettle body 10 is relatively low and a large tilting angle is required to pour water, the dust cover 20 can automatically deflect and open at a larger angle under the action of gravity, ensuring that the cover plate 210 still does not contact the water flow and ensuring the smoothness of the water flow.

[0110] In some embodiments, the angle formed by the line connecting the center of gravity 201 of the dust cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft is greater than or equal to 1° and less than or equal to 25°. In order to ensure that the dust cover 20 can fit well with the spout 110 and prevent the dust cover 20 from tilting when placed horizontally, the center of gravity 201 of the dust cover should be located on the side of the rotating shaft 220 facing the pouring port of the spout 110. It is further defined that the angle formed by the line connecting the center of gravity 201 of the dust cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft is greater than or equal to 1°. In this way, it can be ensured that the dust cover 20 can be in a closed state even when the kettle body 10 is placed on a slightly tilted table. To ensure that the dust cover 20 can automatically open under the action of gravity when pouring water, the angle formed by the line between the center of gravity 201 of the dust cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft needs to be smaller than the minimum tilt angle of the kettle body 10 when pouring water. The angle is further limited to be less than or equal to 25°. Within this range, it can ensure that the dust cover 20 can automatically open under the action of gravity as the kettle body 10 tilts, and it can also avoid the kettle body 10 tilting at too large an angle to be difficult to operate when pouring water.

[0111] In some embodiments, the kettle body 10 includes an inner liner 120 having a diameter ranging from 80 mm to 200 mm. Furthermore, the inner liner 120 is typically cylindrical with a diameter ranging from 80 mm to 160 mm and a capacity ranging from 0.4 L to 2 L. The smaller the diameter of the inner liner 120, the greater the tilt angle of the kettle body 10 when pouring water; the larger the diameter of the inner liner 120, the smaller the tilt angle of the kettle body 10 when pouring water.

[0112] Furthermore, when the kettle body 10 includes the kettle body 120 , a water outlet 101 is provided on the side wall of the kettle body 120 , and the spout 110 can be provided on the outside of the kettle body 120 and connected to the kettle body 120 .

[0113] Furthermore, the dust cover 20 reduces heat dissipation from the kettle body 10, accelerating the heating process and allowing it to reach the desired temperature more quickly. It also reduces the cooling rate within the kettle body 10 after the water has finished boiling, improving heat preservation. Table 2 below shows experimental data on the effect of the presence or absence of the dust cover 20 on heating speed. As shown in Table 2, given the same capacity and heating power, kettles with the dust cover 20 heat up faster. The dust cover 20 increases the heating rate, allowing kettles with the dust cover 20 to reach the trip temperature in a shorter time.

[0114] Table 2

[0115] Test items No dust cover With dust cover Dust cover advantages Capacity 1.5L, heating power 1500W, heating time from 20° to tripping 6 minutes and 20 seconds 6 minutes and 13 seconds 7 seconds faster Capacity 1.5L, heating power 1500W, heating time from 96° to tripping 23.3 seconds 18.1 seconds 5.2 seconds faster

[0116] Table 3 below shows experimental data on the effect of the presence or absence of a dust cover 20 on the degree of water splashing around the kettle during boiling. The pass criterion for the splash test is generally that the diameter of the water droplets splashing onto the table surface around the kettle after boiling is completed is 2mm or less. Water splashing during boiling typically occurs between the time the liquid nears boiling and the time the kettle trips. Because the dust cover 20 not only blocks splashing at the spout 110 but also shortens the tripping time, it significantly reduces the amount of water splashing onto the table surface around the kettle during boiling. Combined with the test results in Table 2, it can be seen that, given the same capacity and heating power, water droplets splashing onto the table surface around the kettle during boiling are present in kettles without a dust cover 20. The maximum diameter of the droplets that land on the table surface is approximately 8mm, which is high in energy and can easily burn the user. However, kettles with a dust cover 20 produce virtually no water droplets splashing onto the table surface around the kettle during boiling, demonstrating excellent water splash prevention.

[0117] Table 3

[0118]

[0119] In some embodiments, as an example, optionally, the dustproof kettle can be an electric kettle, an electric thermos, a health kettle, or a water storage kettle, an insulated kettle, etc.

[0120] Although the embodiments of the present invention have been described in detail above, those skilled in the art may make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It should be understood that, in the opinion of those skilled in the art, such modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. A dustproof kettle, characterized in that: include: Pot body (10); A spout (110) is arranged on the outside of the kettle body (10); a dust cover (20) rotatably connected to the kettle body (10) or the kettle spout (110) via a rotating shaft (220); the dust cover (20) comprises a cover plate (210); the cover plate (210) is capable of covering the kettle spout (110) and is capable of opening the kettle spout (110) when the kettle body (10) is tilted, so as to facilitate pouring water; When the cover plate (210) is covered on the spout (110), the end of the cover plate (210) away from the kettle body (10) is lower than the horizontal plane where the center (221) of the rotating shaft is located.

2. The dustproof kettle according to claim 1, characterized in that: When the cover plate (210) is covered on the spout (110), the cover plate (210) tilts downward from an end close to the kettle body (10) to an end away from the kettle body (10), and the end of the cover plate (210) close to the kettle body (10) is higher than the horizontal plane where the top end of the rotating shaft (220) is located.

3. The dustproof kettle according to claim 1, characterized in that: When the cover plate (210) is covered on the spout (110), the angle between the line connecting the lowest point of one end of the cover plate (210) away from the kettle body (10) and the center (221) of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

4. The dustproof kettle according to claim 1, characterized in that: The dust cover (20) further comprises: The counterweight portion (240) is detachably connected to the cover plate (210).

5. The dustproof kettle according to claim 4, characterized in that: A water outlet (101) is provided on the side wall of the kettle body (10), and the top end of the water outlet (101) is lower than the counterweight (240).

6. The dustproof kettle according to claim 4, characterized in that: The dust cover (20) further comprises: A support leg (250) is connected to the cover plate (210), and when the dust cover (20) is opened at a preset angle relative to the spout (110), the support leg (250) can abut against the spout (110) to limit the opening angle of the dust cover (20).

7. The dustproof kettle according to claim 6, characterized in that: The kettle body (10) has an upper opening, and the dustproof kettle also includes a kettle cover, which covers the upper opening of the kettle body (10). When the supporting legs (250) are in contact with the spout (110), a gap (130) is provided between the cover plate (210) and the top of the spout (110), so that liquid overflowing through the gap between the kettle cover and the upper opening can enter the spout (110) through the gap (130).

8. The dustproof kettle according to claim 4, characterized in that: The dust-proof kettle also includes: A connecting seat (230) is provided with a receiving groove in the connecting seat (230), and the counterweight part (240) is installed in the receiving groove. A buckle (242) is protruding from one of the connecting seat (230) and the counterweight part (240), and a buckle hole (234) adapted to the buckle (242) is provided on the other. The buckle (242) is buckled with the buckle hole (234) to connect the connecting seat (230) and the counterweight part (240).

9. The dustproof kettle according to any one of claims 1 to 8, characterized in that: The radius of the rotating shaft (220) is less than or equal to 3 mm.

10. The dustproof kettle according to any one of claims 1 to 8, characterized in that: A crossbeam (111) is provided on the top of the spout (110), two downwardly protruding mounting plates (112) are provided on the bottom surface of the crossbeam (111), and the rotating shaft (220) is provided on the mounting plates (112).

11. The dustproof kettle according to any one of claims 1 to 8, characterized in that: When the cover plate (210) is covered on the spout (110), the center of gravity (201) of the dust cover is located on the side of the rotating shaft (220) facing the pouring port of the spout (110), and the angle formed by the line between the center of gravity (201) of the dust cover and the center (221) of the rotating shaft and the vertical line passing through the center (221) of the rotating shaft is less than or equal to the minimum tilt angle of the kettle body (10) when pouring water.

Images