Heat preservation kettle cover

Abstract

The heat preservation pot cover comprises a top cover and an inner cover, and the top cover and the inner cover have a locking state in which the top cover and the inner cover are mutually fixed in the first direction and an unlocking state in which the top cover and the inner cover can be mutually separated in the first direction; the top cover and the inner cover can move relatively in the second direction so as to be switched between the locking state and the unlocking state. The inner cover is provided with a stopping part and a clamping position, the top cover is provided with a clamping part, and when the top cover and the inner cover are in a locking state, the clamping part is located in the clamping position. When the top cover and the inner cover are in an unlocking state, the clamping part is positioned outside the clamping position; in the stroke of relative movement of the top cover and the inner cover, the stopping part abuts against the clamping part in the second direction so as to limit the clamping part to enter or break away from the clamping position, and the stopping part can deform to break away from the position for abutting against the clamping part after abutting against the stopping part. According to the heat preservation pot cover, the top cover and the inner cover are convenient to disassemble and assemble, and the top cover and the inner cover are stably and firmly locked.

Description

Technical Field

[0001] This application relates to the technical field of thermal flasks, and particularly to a thermal flask lid. Background Art

[0002] A thermal flask is a common water container in daily life, with heat preservation function, usually composed of a thermal flask body and a thermal flask lid. The thermal flask lid includes a top cover and an inner cover. In traditional thermal flask lids, the top cover and the inner cover are mostly non-detachable. However, since there are many parts in the thermal flask lid, it is easy to hide dirt and grime inside. And the non-detachable thermal flask lid is inconvenient to clean. If the daily cleaning is not in place, a large number of bacteria are likely to breed, which is likely to affect human health. Therefore, the thermal flask lids on the existing market have begun to be designed into a structure where the top cover and the inner cover are detachable, so as to facilitate a thorough cleaning after the top cover and the inner cover are detached.

[0003] Some existing detachable thermal flask lids, for example, in some prior arts, the top cover and the inner cover are matched through a pressing buckle structure. Although this way has a relatively firm fit, correspondingly, it is more laborious to use the pressing buckle, resulting in difficulties in disassembling and assembling the top cover and the inner cover. And the pressing buckle is prone to deformation, failure or even fracture after long-term stress; in some other thermal flask lids, the top cover and the inner cover are clamped through a screwing buckle. The screwing buckle makes the buckle enter or disengage from the slot through rotation. Although the screwing buckle is easy to disassemble and assemble, in order to achieve labor saving, there is a clearance fit between the buckle and the slot, which will lead to insufficient firmness of their fit; and in order to improve the firmness, switching the buckle and the slot to an interference fit form will lead to the problem of laboriousness again. Through comprehensive analysis, there is an urgent need for a thermal flask lid with a firm fit between the top cover and the inner cover and convenient disassembly and assembly. Summary of the Utility Model

[0004] This application provides a thermal flask lid to improve or solve to a certain extent the technical problem that the firmness of fit and the convenience of disassembly and assembly of the existing thermal flask lids cannot coexist.

[0005] The technical solution adopted in this application is as follows:

[0006] A heat-insulating kettle lid includes a top lid and an inner lid. The top lid and the inner lid have a locked state where they are fixed to each other in a first direction, and an unlocked state where they can be separated from each other in the first direction. The top lid and the inner lid can move relative to each other in a second direction to switch between the locked state and the unlocked state. Among them, the inner lid is provided with a stop portion and a clamping position, and the top lid is provided with a clamping portion. When the top lid and the inner lid are in the locked state, the clamping portion is located within the clamping position. When the top lid and the inner lid are in the unlocked state, the clamping portion is located outside the clamping position. During the relative movement stroke of the top lid and the inner lid, the stop portion resists the clamping portion in the second direction to limit the clamping portion from entering or exiting the clamping position, and the stop portion can be deformed after being pushed against to move away from the position where it resists the clamping portion.

[0007] The heat-insulating kettle lid in this application also has the following additional technical features:

[0008] The inner lid is provided with positioning ribs connected to the body portion. The stop portion and the clamping position are provided on the positioning ribs, and a gap is formed between the positioning ribs and the body portion for the stop portion to elastically deform under the pushing action of the clamping portion.

[0009] The positioning ribs are provided with detachment recesses. During the stroke of the top lid and the inner lid switching from the locked state to the unlocked state, the clamping portion disengages from within the clamping position, and the clamping portion can be snapped into the detachment recesses by deforming the stop portion through pushing, so that the top lid and the inner lid are maintained in the unlocked state.

[0010] The positioning ribs are integrally in a strip structure. The clamping position, the stop portion, and the detachment recesses are arranged adjacent to each other in sequence along the length direction of the positioning ribs, and the surfaces of the clamping position, the stop portion, and the detachment recesses are smoothly transitioned.

[0011] The top lid includes an outer ring rib, and the outer ring rib is provided with a card slot;

[0012] The inner lid includes an inner ring rib, and the inner ring rib is provided with a convex rib that can be snapped into the card slot. The convex rib can enter or exit the card slot in the second direction. Among them, the card slots are spaced along the extending direction of the outer ring rib on the inner wall of the outer ring rib, and the convex ribs are spaced along the extending direction of the inner ring rib on the outer wall of the inner ring rib. When the top lid covers the inner lid, the outer ring rib covers the outside of the inner ring rib, and the outer ring rib and the inner ring rib move relative to each other to cause the convex rib and the card slot to be snapped or separated.

[0013] The top cover is provided with a stop rib position. When the convex rib is connected to the card slot, the stop rib position abuts against the card slot in the direction of the top cover switching to the locked state, so as to limit the relative movement of the inner cover and the top cover in the direction.

[0014] The inner cover and the top cover can rotate relative to each other, and the second direction is the rotation direction; the top cover is provided with a radial limiting part, and the radial limiting part cooperates with the inner cover to limit the relative movement of the inner ring rib and the outer ring rib in the radial direction.

[0015] The radial limiting part is configured as a retaining wall formed in the card slot. When the convex rib is clamped with the card slot, the retaining wall abuts against the outer edge of the convex rib along the radial direction of the inner cover.

[0016] Along the direction in which the convex rib is screwed into the card slot, the retaining wall gradually inclines towards the center of the outer ring rib to form a guiding inclined surface for guiding the convex rib to be screwed into the card slot.

[0017] The top cover includes a top wall connected to the top of the outer ring rib. The top wall is provided with a central convex part protruding towards the inside of the outer ring rib. A limiting ring groove is formed between the central convex part and the outer ring rib, which cooperates with the inner ring rib to realize radial limitation of the inner ring rib.

[0018] Due to the adoption of the above technical solution, the technical effects obtained by the present application are as follows:

[0019] 1. For the thermos flask lid provided by the present application, the inner cover and the top cover can move relative to each other to achieve locking or unlocking, making the disassembly and assembly of the top cover and the inner cover simple and fast, and can be carried out manually without the aid of auxiliary tools. Moreover, the inner cover is provided with a stop part and a clamping position, and the top cover is provided with a clamping part. The stop part abuts against the clamping part in the second direction of the relative movement of the top cover and the inner cover, restricting the relative movement of the top cover and the inner cover. For example, when the top cover and the inner cover are in the locked state, by the stop part abutting against the clamping part, the top cover and the inner cover can be limited in the locked state, effectively preventing the top cover and the inner cover from being accidentally touched to generate relative movement and unlocking, ensuring the locking stability of the top cover and the inner cover, and the cooperation is relatively firm; another example is that when the top cover and the inner cover are in the unlocked state, by the stop part abutting against the clamping part, the top cover and the inner cover can be limited in the unlocked state, facilitating the smooth disassembly of the top cover and the inner cover. In addition, the stop part can be deformed, and the clamping part pushes the stop part to deform to a state of avoiding the clamping part, so that the stop part does not hinder the user from actively switching the locking state and the unlocking state of the top cover and the inner cover. Only by slightly applying force to make the clamping part push the stop part to deform, the clamping part can be snapped into the clamping position or disengaged from the clamping position to realize the locking and unlocking of the top cover and the inner cover.

[0020] 2. As a preferred embodiment of the present application, the stop portion is configured as a positioning rib, and there is a gap between the positioning rib and the main body portion. This gap is the space for the stop portion to deform towards the main body portion under the pushing action of the clamping portion, enabling the stop portion to undergo a small amount of deformation, so that the stop portion forms an avoidance for the clamping portion and allows the clamping portion to be inserted into or disengaged from the clamping position. Moreover, the existence of the gap between the positioning rib and the inner lid can also prevent the stop portion from being difficult to deform due to the thermal expansion and contraction effect of the thermos flask lid.

[0021] 3. As a preferred embodiment of the present application, the positioning rib is provided with a disengaging recess. During the process of the top cover and the inner lid switching from the locked state to the unlocked state, the clamping portion disengages from the clamping position and is inserted into the disengaging recess in the state where the positioning rib provides avoidance, so as to maintain the top cover and the inner lid in the unlocked state, thus facilitating the disassembly of the top cover and the inner lid. When the clamping portion cooperates with the disengaging recess, the positioning rib does not exert too much squeezing force on the clamping portion, and the two are in a relatively loose state, making it easier to disassemble the top cover and the inner lid.

[0022] 4. As a preferred embodiment of the present application, the clamping position, the stop portion, and the disengaging recess are arranged adjacent to each other in sequence along the length direction of the positioning rib, and the surfaces of the clamping position, the stop portion, and the disengaging recess are smoothly transitioned. During the process of the top cover and the inner lid switching between the locked state and the unlocked state, the clamping portion slides smoothly along the positioning portion, and it is not easy to generate jamming phenomena, so that the stop portion can be smoothly pushed to deform and be inserted into the clamping position or the disengaging recess.

[0023] 5. As a preferred embodiment of the present application, by the stop rib position abutting against the card slot in the moving direction of the top cover when switching to the locked state, the relative movement between the top cover and the inner lid is restricted. On the one hand, it can give the operator a tactile hint that the top cover and the inner lid are properly fitted, and on the other hand, it can further improve the firmness of the cooperation between the top cover and the inner lid. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0025] Figure 1 is an exploded view of the thermos flask lid provided by the embodiment of the present application;

[0026] Figure 2 is a schematic structural diagram of the top cover provided by the embodiment of the present application;

[0027] Figure 3 is Figure 2 a partial enlarged view of the structure at A in

[0028] Figure 4Structural schematic of the inner cover provided by the embodiment of the present application Figure 1 ;

[0029] Figure 5 Structural schematic of the inner cover provided by the embodiment of the present application Figure 2 ;

[0030] Figure 6 Structural schematic of the top cover and the inner cover in the assembled state provided by the embodiment of the present application Figure 1 ;

[0031] Figure 7 Structural schematic of the top cover and the inner cover in the assembled state provided by the embodiment of the present application Figure 2 ;

[0032] Figure 8 is Figure 7 Partial enlarged view of the structure at position B in

[0033] List of components and reference numerals:

[0034] 1. Top cover; 11. Card slot; 12. Outer ring rib; 13. Baffle wall; 131. Guiding inclined surface; 14. Top wall; 141. Central convex part; 15. Limiting ring groove; 16. Clamping part;

[0035] 2. Inner cover; 21. Body part; 211. Convex rib; 212. Stopping rib position; 213. Inner ring rib; 22. Positioning part; 221. Stopping part; 222. Clamping position; 223. Detaching recess; 23. Gap. Detailed implementation manners

[0036] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0037] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0038] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0039] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] In an embodiment of this application, a heat-insulating kettle lid is provided. For the convenience of description and understanding, the following content provided in this application is all elaborated based on the illustrated product structure. Of course, those skilled in the art can understand that the above structure is only a specific example and a schematic illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0042] Refer to Figures 1 to 8As shown, a heat-insulating kettle lid provided by the present application includes a top lid 1 and an inner lid 2 detachably connected together. The disassembly direction of the top lid 1 and the inner lid 2 is along the first direction X. The inner lid 2 includes a body portion 21 and a positioning portion 22; one of the top lid 1 and the body portion 21 is provided with a card slot, and the other of the two is provided with a rib adapted to the card slot. The top lid 1 covers the inner lid 2 and can move relative to the inner lid 2 in the second direction Y to make the rib snap into or out of the card slot, so that the top lid 1 and the inner lid 2 can be switched between a locked state and an unlocked state; the positioning portion 22 is provided with a stop portion 221 and a clamping position 222, and the top lid 1 is provided with a clamping portion 16; during the stroke of the top lid 1 and the inner lid 2 switching between the locked state and the unlocked state, the stop portion 221 resists the clamping portion 16 in the second direction Y to limit the relative movement of the top lid 1 and the inner lid 2; the stop portion 221 is deformable, and the clamping portion 16 deforms the stop portion 221 by pushing to a state of avoiding the clamping portion 16, so that the clamping portion 16 can snap into the clamping position 222; when the clamping portion 16 snaps into the clamping position 222, it is blocked by the stop portion 221 whose shape is restored, so as to limit the top lid 1 and the inner lid 2 to the locked state.

[0043] In the heat-insulating kettle lid provided by the present application, the top lid 1 and the body portion 21 are locked or unlocked by the snap connection or disconnection of the card slot and the rib, so that the disassembly and assembly of the top lid 1 and the inner lid 2 are simple and fast, and the disassembly and assembly operations can be carried out manually without the aid of auxiliary tools. Specifically, as Figure 2 、 Figure 3 and Figure 4 shown, the present application schematically illustrates an embodiment in which the top lid 1 is provided with a card slot 11 and the body portion 21 is provided with a rib 211. Preferably, a plurality of card slots 11 can be provided at intervals on the top lid 1, and a plurality of ribs 211 are correspondingly provided on the body portion 21, so that the top lid 1 and the inner lid 2 can be snap-connected in multiple directions to improve the firmness of the fit. In addition, the present application does not limit the snap connection method of the card slot 11 and the rib 211. According to the different design forms and installation positions of the card slot 11 and the rib 211, the two can be snap-connected by moving relative to each other along the axial direction of the heat-insulating kettle lid, or by moving relative to each other along the circumferential direction of the heat-insulating kettle lid, or by other suitable ways of relative movement to achieve snap connection.

[0044] The positioning portion 22 is provided with a stop portion 221 and a clamping position 222, and the top lid 1 is provided with a clamping portion 16. The stop portion 221 resists the clamping portion 16 in the second direction Y to restrict the relative movement of the top lid 1 and the inner lid 2. For example, as Figure 6 、 Figure 7 and Figure 8As shown, when the top cover 1 and the inner cover 2 are in a locked state, the snap-fitting portion 16 is snapped into the snap-fitting position 222. At this time, the stopper 221 resists the snap-fitting portion 16, so that the top cover 1 and the inner cover 2 can be limited in a locked state, effectively preventing the top cover 1 and the inner cover 2 from being accidentally touched to produce relative movement and unlocking, thereby ensuring the locking stability of the top cover 1 and the inner cover 2, and the fit is relatively firm. For example, when the top cover 1 and the inner cover 2 are in an unlocked state, the stopper 221 resists the snap-fitting portion 16, so that the top cover 1 and the inner cover 2 can be limited in an unlocked state, so that the top cover 1 and the inner cover 2 can be smoothly disassembled. In addition, the stopper 221 is deformable, and the snap-in portion 16 is deformed to a state of avoiding the snap-in portion 16 by pushing the stopper 221, so that the stopper 221 will not hinder the user from actively switching the top cover 1 and the inner cover 2 between the locked state and the unlocked state. Only a slight force is needed to push the stopper 221 to deform the snap-in portion 16, so that the snap-in portion 16 can be snapped into the snap-in position 222 or detached from the snap-in position 222 to achieve the locking and unlocking of the top cover 1 and the inner cover 2.

[0045] As a preferred implementation of the present application, Figure 5 As shown, the positioning portion 22 is constructed as a positioning rib connected to the body portion 21, and a gap 23 is formed between the positioning rib and the body portion 21 for the stopper 221 to deform under the pushing action of the clamping portion 16. There is a gap 23 between the positioning rib and the body portion 21, and the gap 23 is a space for the stopper 221 to deform toward the body portion 21 under the pushing action of the clamping portion 16, so that the stopper 221 can move to one side of the gap and then deform slightly, so that the stopper 221 can avoid the clamping portion 16 and the clamping portion 16 can be clamped into the clamping position 222 or separated from the clamping position 222. In addition, the existence of the gap 23 between the positioning rib and the body portion 21 can also prevent the stopper 221 from being difficult to deform due to the thermal expansion and contraction effect of the thermos pot cover. Specifically, the positioning portion 22 and the main body 21 may be integrally formed to enhance the connection strength between the positioning portion 22 and the main body 21 and reduce the risk of the positioning portion 22 being broken due to deformation of the stopper 221 .

[0046] In some other embodiments, the stopper may also be constructed as a deformable member or component such as a silicone member, an elastic member, etc., as long as it can be deformed under a large force.

[0047] Furthermore, if Figure 5 and Figure 8As shown, the positioning portion 22 is provided with a disengaging recess 223. During the stroke of the top cover 1 and the inner cover 2 switching from the locked state to the unlocked state, the engaging portion 16 disengages from the engaging position 222, and the engaging portion 16 can be engaged into the disengaging recess 223 by deforming the stop portion 221 by pushing, so that the top cover 1 and the inner cover 2 are maintained in the unlocked state, thereby facilitating the disassembly of the top cover 1 and the inner cover 2. When the engaging portion 16 cooperates with the disengaging recess 223, the positioning portion 22 will not generate too much squeezing force on the engaging portion 16, and the two are in a relatively loose state, making it easier to disassemble the top cover 1 and the inner cover 2. Through this kind of setting, when assembling the top cover 1 and the inner cover 2, it is necessary to fit the top cover 1 and the inner cover 2 to a position where the engaging portion 16 cooperates with the disengaging recess 223, and then make the top cover 1 and the inner cover 2 move relative to each other towards the locked state. At this time, the engaging portion 16 pushes the stop portion 221 to deform and disengages from the disengaging recess 223 and is engaged into the engaging position 222, limiting the top cover 1 and the inner cover 2 in the locked state; when disassembling the top cover 1 and the inner cover 2, make the top cover 1 and the inner cover 2 move relative to each other towards the unlocked state. At this time, the engaging portion 16 pushes the stop portion 221 to deform and disengages from the engaging position 222 and is engaged into the disengaging recess 223, and then the top cover 1 and the inner cover 2 can be separated.

[0048] Further, as Figure 5 shown, the positioning rib is integrally in a strip structure, and the engaging position 222, the stop portion 221, and the disengaging recess 223 are arranged adjacent to each other in sequence along the length direction of the positioning rib. The surfaces of the engaging position 222, the stop portion 221, and the disengaging recess 223 are smoothly transitioned, so that during the stroke of the top cover 1 and the inner cover 2 switching between the locked state and the unlocked state, the engaging portion 16 slides smoothly along the positioning portion 22 and is not prone to jamming, and thus can smoothly push the stop portion 221 to deform and be engaged into the engaging position 222 or the disengaging recess 223. Specifically, the length direction of the positioning rib can extend along the second direction. Taking the unlocking or locking of the top cover 1 and the inner cover 2 moving relative to each other along the circumferential direction of the thermos flask lid as an example, in this solution, the length direction of the positioning rib can extend along the circumferential direction of the thermos flask lid and be provided on the inner cover 2.

[0049] As a preferred embodiment of the present application, as Figure 4 、 Figure 6 and Figure 7As shown, the body portion 21 is provided with a stop rib position 212. When the rib 211 is connected to the card slot 11, the stop rib position 212 abuts against the card slot 11 in the moving direction of the top cover 1 when switching to the locked state, thereby restricting the relative movement between the top cover 1 and the inner cover 2 from continuing. By using the stop rib position 212 to resist the card slot 11, on the one hand, it can give the operator a tactile hint that the top cover 1 and the inner cover 2 are properly fitted, and on the other hand, it can further improve the firmness of the fit between the top cover 1 and the inner cover 2. Taking the relative movement of the top cover 1 and the inner cover 2 along the circumferential direction of the thermos flask lid to unlock or lock as an example, when the top cover 1 and the inner cover 2 rotate relative to each other and switch from the unlocked state to the locked state, when the engaging portion 16 just snaps into the engaging position 222, the stop rib position 212 abuts against the card slot 11 to achieve circumferential limit, thereby restricting the relative rotational movement between the top cover 1 and the inner cover 2 from continuing.

[0050] As a preferred embodiment of the present application, as Figures 2 to 5 shown, the top cover 1 includes an outer ring rib 12, and the body portion 21 includes an inner ring rib 213. The card slot 11 and the engaging portion 16 are arranged at intervals along the circumferential direction of the outer ring rib 12 on the inner wall of the outer ring rib 12, and the rib 211 and the positioning portion 22 are arranged at intervals along the circumferential direction of the inner ring rib 213 on the outer wall of the inner ring rib 213. When the top cover 1 covers the inner cover 2, the outer ring rib 12 covers the outside of the inner ring rib 213, and the outer ring rib 12 and the inner ring rib 213 rotate relative to each other coaxially to make the rib 211 and the card slot 11 snap-connect or separate. Specifically, before locking the top cover 1 and the inner cover 2, the top cover 1 and the inner cover 2 need to move relative to each other axially with the engaging portion 16 facing the disengaging recess 223, so that the outer ring rib 12 covers the outside of the inner ring rib 213. At this time, the engaging portion 16 enters the disengaging recess 223, and the card slot 11 and the rib 211 are still in a misaligned state. Then, the top cover 1 and the inner cover 2 are rotated and switched towards the locked state. While the engaging portion 16 pushes the stop portion 221 to deform and disengages from the disengaging recess 223 and enters the engaging position 222, the stop rib position 212 abuts against the card slot 11. At this time, the card slot 11 and the rib 211 are snap-connected in place. In this solution, by making the top cover 1 and the inner cover 2 snap-connect or separate, the disassembly and assembly are convenient and labor-saving.

[0051] Furthermore, the top cover 1 is provided with a radial limiting portion, and the radial limiting portion cooperates with the inner cover 2 to restrict the relative movement of the inner ring rib 213 and the outer ring rib 12 in the radial direction, thereby preventing the top cover 1 and the inner cover 2 from shaking radially in the locked state, which helps to improve the assembly stability.

[0052] Regarding the structure of the radial limiting portion, in a preferred embodiment, as Figure 2 and Figure 3As shown, the radial limiting portion is configured as a retaining wall 13 formed in the slot 11. When the rib 211 and the slot 11 are snap-fitted, the retaining wall 13 abuts against the edge of the rib 211. In this way, when the top cover 1 and the inner cover 2 rotate relative to each other to achieve locking, while the rib 211 and the slot 11 are in place, the rib 211 abuts against the retaining wall 13, so as to keep the top cover 1 and the inner cover 2 without shaking in the radial direction. Further, along the direction in which the rib 211 is screwed into the slot 11, the retaining wall 13 gradually inclines towards the center of the outer ring rib 12 to form a guiding inclined surface 131 for guiding the rib 211 to be screwed into the slot 11. Thus, the entrance of the slot 11 is transitioned through the guiding inclined surface 131, and the rib 211 slides along the guiding inclined surface 131 when being screwed into the slot 11, which is convenient for smoothly entering the slot 11, effectively preventing jamming and increasing the difficulty of screwing the rib 211 into the slot 11, and making the cooperation between the top cover 1 and the inner cover 2 labor-saving.

[0053] Regarding the structure of the radial limiting portion, in a preferred embodiment, as Figure 2 shown, the top cover 1 includes a top wall 14 connected to the top of the outer ring rib 12. The top wall 14 is provided with a central convex portion 141 protruding towards the inside of the outer ring rib 12. A limiting ring groove 15 is formed between the central convex portion 141 and the outer ring rib 12 for cooperating with the inner ring rib 213 to realize radial limitation of the inner ring rib 213. This limiting ring groove 15 constitutes the radial limiting portion. During the installation process, when the top cover 1 and the inner cover 2 move relative to each other along the axial direction and the outer ring rib 12 covers the outside of the inner ring rib 213, the edge of the inner ring rib 213 is located in the limiting ring groove 15, and the outer ring rib 12 and the central convex portion 141 respectively abut against the outer surface and the inner surface of the inner ring rib 213, so as to realize radial limitation of the inner ring rib 213, and thus keep the top cover 1 and the inner cover 2 without shaking in the radial direction.

[0054] In the present application, those not described can be realized by adopting or referring to the existing technologies.

[0055] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0056] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A heat-insulating kettle lid, comprising a top lid and an inner lid, characterized in that the top lid and the inner lid have a locked state of being fixed to each other in a first direction and an unlocked state of being separable from each other in the first direction; the top lid and the inner lid can move relative to each other in a second direction to switch between the locked state and the unlocked state; wherein, the inner lid is provided with a stop portion and a clamping position, the top lid is provided with a clamping portion, and when the top lid and the inner lid are in the locked state, the clamping portion is located within the clamping position; when the top lid and the inner lid are in the unlocked state, the clamping portion is located outside the clamping position; during the relative movement stroke of the top lid and the inner lid, the stop portion resists the clamping portion in the second direction to limit the entry or detachment of the clamping portion into or from the clamping position, and the stop portion can be deformed after being pressed against to disengage from the position where it resists the clamping portion.

2. The heat-insulating kettle lid according to claim 1, characterized in that the stop portion is configured as a positioning rib connected to the inner lid, the stop portion and the clamping position are provided on the positioning rib, and a gap is formed between the positioning rib and the inner lid for the stop portion to elastically deform under the pushing action of the clamping portion.

3. The heat-insulating kettle lid according to claim 2, characterized in that the positioning rib is provided with a detachment recess, and during the stroke of the top lid and the inner lid switching from the locked state to the unlocked state, the clamping portion disengages from within the clamping position, and the clamping portion can be snapped into the detachment recess by deforming the stop portion by pushing, so that the top lid and the inner lid are maintained in the unlocked state.

4. The heat-insulating kettle lid according to claim 3, characterized in that the positioning rib is integrally in a strip structure, the clamping position, the stop portion, and the detachment recess are arranged adjacent to each other in sequence along the length direction of the positioning rib, and the surfaces of the clamping position, the stop portion, and the detachment recess are smoothly transitioned.

5. The heat-insulating kettle lid according to any one of claims 1-4, characterized in that the top lid includes an outer ring rib, and the outer ring rib is provided with a card slot; the inner lid includes an inner ring rib, and the inner ring rib is provided with a convex rib that can be snapped into the card slot, and the convex rib can enter or disengage from the card slot in the second direction; wherein, the card slots are arranged at intervals along the extending direction of the outer ring rib on the inner wall of the outer ring rib, the convex ribs are arranged at intervals along the extending direction of the inner ring rib on the outer wall of the inner ring rib, when the top lid covers the inner lid, the outer ring rib covers the outside of the inner ring rib, and the outer ring rib and the inner ring rib move relative to each other to make the convex rib and the card slot snap or separate.

6. The heat-insulating kettle lid according to claim 5, characterized in that the top lid is provided with a stop rib position, and when the convex rib and the card slot are connected, the stop rib position abuts against the card slot in the direction of the top lid switching to the locked state to limit the relative movement of the inner lid and the top lid in this direction.

7. The heat-insulating kettle lid according to claim 5, characterized in that The inner lid and the top lid are rotatable relative to each other, and the second direction is the rotation direction; The top lid is provided with a radial limiting portion, and the radial limiting portion cooperates with the inner lid to limit the relative radial movement of the inner ring rib and the outer ring rib.

8. The heat preservation kettle lid according to claim 7, wherein The radial limiting portion is configured as a retaining wall formed in the card slot. When the convex rib is engaged with the card slot, the retaining wall abuts against the outer edge of the convex rib along the radial direction of the inner lid.

9. The heat preservation kettle lid according to claim 8, wherein Along the direction in which the convex rib is screwed into the card slot, the retaining wall gradually inclines toward the center of the outer ring rib to form a guiding inclined surface for guiding the convex rib to be screwed into the card slot.

10. The heat preservation kettle lid according to claim 7, wherein The top lid includes a top wall connected to the top of the outer ring rib. The top wall is provided with a central convex portion protruding toward the inside of the outer ring rib. A limiting ring groove is formed between the central convex portion and the outer ring rib and cooperates with the inner ring rib to radially limit the inner ring rib.

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