Heat preservation kettle cover

Abstract

The heat preservation kettle cover comprises a top cover and an inner cover, a connecting part is arranged on one side of the top cover, and a locking rib position is arranged on the other opposite side of the top cover; the inner cover is provided with a matching part corresponding to the connecting part in position and an unlocking part corresponding to the locking rib in position. The matching part can abut against the connecting part in the first direction, and the unlocking part can abut against the locking rib position in the first direction, so that the top cover and the inner cover are fixed to each other in the first direction. In the state that the unlocking part is matched with the locking rib position, the wall of the top cover abuts against the wall of the inner cover in the direction perpendicular to the first direction, so that the top cover and the inner cover are fixed to each other; and the unlocking part can deform towards one side far away from the locking rib position, so that the unlocking part is separated from the locking rib position. According to the heat preservation kettle cover, the top cover and the inner cover are easy, convenient and rapid to disassemble and assemble and easy to operate, and good firmness is achieved after the top cover and the inner cover are matched in place.

Description

Technical Field

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

[0002] A thermos flask is a common water container in daily life and has a heat preservation function. It usually consists of a thermos flask body and a thermos flask lid. The thermos flask lid includes a top cover and an inner cover. In traditional thermos flask lids, the top cover and the inner cover are mostly non-detachable. However, there are many parts in the thermos flask lid, and it is easy for dirt and grime to accumulate inside. The non-detachable thermos flask lid is inconvenient to clean. If the daily cleaning is not in place, a large number of bacteria are likely to breed, which can easily affect human health.

[0003] Therefore, some of the existing thermos flask lids on the market are designed with a detachable structure for the top cover and the inner cover to facilitate thorough cleaning after the top cover and the inner cover are detached. However, in some of the existing thermos flask lids, the top cover and the inner cover are mostly fixed by snap-fitting with bumps and grooves. The fit is relatively firm, but correspondingly, there is a common problem that it is difficult to disassemble and assemble the top cover and the inner cover. Moreover, during the disassembly process, the bumps and grooves are likely to be damaged. In some other thermos flask lids, although the top cover and the inner cover are easy to disassemble and assemble, the firmness of their fit is insufficient. Through comprehensive analysis, there is an urgent need for a thermos flask lid in which the top cover and the inner cover are firmly fitted, easy to disassemble and assemble, and not easily damaged during disassembly and assembly. Utility Model Content

[0004] The present application provides a thermos flask lid to improve or solve to a certain extent the technical problems that the firmness of the fit and the convenience of disassembly and assembly of the existing thermos flask lid cannot coexist and it is easy to be damaged during the disassembly and assembly process.

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

[0006] A thermos flask lid includes a top cover and an inner cover. One side of the top cover is provided with a connecting portion, and the opposite side is provided with a locking rib position; the inner cover is provided with a mating portion corresponding to the position of the connecting portion and an unlocking portion corresponding to the position of the locking rib position; the mating portion can abut against the connecting portion along a first direction, and the unlocking portion can abut against the locking rib position along the first direction so that the top cover and the inner cover are fixed to each other along the first direction; wherein, in the state where the unlocking portion is engaged with the locking rib position, the wall of the top cover abuts against the wall of the inner cover in a direction perpendicular to the first direction so that the top cover and the inner cover are fixed to each other; the unlocking portion can be deformed toward the side away from the locking rib position so that the unlocking portion disengages from the locking rib position.

[0007] The thermos flask lid in the present application also has the following additional technical features:

[0008] The top cover is provided with a through hole, and the through hole has an upper side wall close to the center of the top cover and a lower side wall directly opposite to the upper side wall, and the lower side wall constitutes the locking rib position.

[0009] The inner cover is provided with stop convex points on both sides of the unlocking part, and the top cover is provided with stop ribs on two side edges of the through hole. When the locking ribs are buckled with the unlocking part, the stop convex points abut against the stop ribs between the two stop ribs.

[0010] The inner cover is provided with one unlocking portion and two matching portions along the circumferential direction, and the two matching portions are equidistant from the unlocking portion.

[0011] The inner cover is provided with two unlocking parts spaced apart along the circumferential direction, and the angle between the lines connecting the two unlocking parts and the central axis of the inner cover is less than 60°.

[0012] The connecting portion is configured as a snap-fit protrusion, and the matching portion is configured as a snap-fit groove matched with the snap-fit protrusion.

[0013] The unlocking portion comprises a connecting end, a buckling end located above the connecting end, and a pressing portion extending between the connecting end and the buckling end. The connecting end is integrally connected to the inner cover, and a buckling position is formed at the buckling end.

[0014] A pressing surface is provided on a side of the pressing portion facing away from the matching portion, and a protruding anti-slip protrusion is provided on the pressing surface.

[0015] The inner cover includes a bottom wall and an annular side wall surrounding the bottom wall, the annular side wall is provided with a notch, the connecting end is connected to the bottom wall, the pressing portion and the snap-fit end are located in the notch and have a gap with the annular side wall, and the matching portion is provided on the annular side wall.

[0016] One of the top cover and the annular side wall is provided with a limiting protrusion, and the other is provided with a limiting groove. When the top cover and the inner cover are locked, the limiting protrusion cooperates with the limiting groove to limit the relative rotation of the top cover and the inner cover along the circumferential direction.

[0017] Due to the adoption of the above technical solution, the technical effects achieved by this application are:

[0018] 1. The thermos pot lid provided by the present application is connected to the top cover and the inner cover by the cooperation of the matching part and the connecting part, and is locked by the buckling of the locking rib and the unlocking part, so that the top cover and the inner cover have better firmness when they are in place, and are not easily separated by accident. When the locking rib is buckled with the unlocking part, the matching state of the matching part and the connecting part is locked, so that the top cover and the inner cover are relatively fixed. When the locking rib is disengaged from the unlocking part, the top cover and the inner cover are unlocked, and the matching part and the connecting part can be disengaged to separate the top cover and the inner cover from each other. During assembly, it is only necessary to match the connecting part with the matching part in advance, and then flip the top cover downward with the connecting part as the rotation fulcrum so that the locking rib is buckled with the unlocking part, so that the top cover and the inner cover can be locked. When the top cover and the inner cover are separated, it is only necessary to press the unlocking part to deform so that the locking rib is separated from the unlocking part, and then the top cover and the inner cover can be unlocked, and the top cover can be flipped upward with the connecting part as the rotation fulcrum, so that the locking rib is completely separated from the unlocking part, so that the top cover and the inner cover are released from the state of abutting each other in the first direction and in a direction perpendicular to the first direction, that is, the top cover and the inner cover are separated from each other. Therefore, the disassembly and assembly of the top cover and the inner cover is simple, fast and easy to use.

[0019] 2. As a preferred embodiment of the present application, the top cover is provided with a through hole, and the lower side wall of the through hole constitutes a locking rib. On the one hand, the existence of the through hole facilitates the accessories installed between the top cover and the inner cover (such as a button for pressing water out) to extend out of the thermos pot lid. On the other hand, the existence of the through hole also provides an avoidance space for the cooperation between the locking rib and the unlocking part, so that the lower side wall and the unlocking part are buckled in the through hole. Therefore, the setting of the through hole realizes multiple uses of one structure. Moreover, when the lower side wall and the unlocking part are buckled in the through hole, the strength of the through hole can be enhanced by the tightening state of the lower side wall by the unlocking part, which helps to limit the deformation of the through hole, and further helps to protect the accessories extending from the through hole.

[0020] 3. As a preferred mode of the present application, when the locking rib is buckled with the unlocking part, the stop convex point abuts against the stop rib between the two stop ribs, plays a positioning role, isolates the unlocking part in the through hole, so that when the unlocking part is pressed, the unlocking part can only deform along the through hole, and the stop convex point prevents the two sides of the through hole from closing toward the through hole and affecting the deformation of the unlocking part. The stop rib also has the function of limiting the relative rotation and shaking of the top cover and the inner cover, and the force generated by the stop will not directly act on the unlocking part, playing the function of protecting the unlocking part.

[0021] 4. As a preferred embodiment of the present application, the inner cover is provided with two unlocking portions arranged at intervals in the circumferential direction, so that the top cover and the inner cover can be locked through the cooperation of two locking rib positions and the unlocking portions, and the locking strength is higher. The included angle between the connecting lines of the two unlocking portions and the central axis of the inner cover is less than 60°, so that when the user presses the unlocking portions, the two unlocking portions can be pressed simultaneously by adjacent two fingers. For example, the two unlocking portions can be pressed simultaneously by the index finger and the middle finger, and the index finger and the middle finger will not open too much, thus facilitating the exertion of force.

[0022] 5. As a preferred embodiment of the present application, the connecting portion is configured as a snap protrusion, and the mating portion is configured as a card slot adapted to the snap protrusion, so that the top cover and the inner cover are connected or separated by the engagement or disengagement of the card slot and the snap protrusion, making the disassembly and assembly of the top cover and the inner cover simple, fast, and can be carried out manually without the aid of auxiliary tools. Description of the Drawings

[0023] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0024] Figure 1 is the assembly drawing of the thermos flask lid provided by the first embodiment of the present application;

[0025] Figure 2 is the structural schematic diagram of the top cover of the thermos flask lid provided by the first embodiment of the present application Figure 1 ;

[0026] Figure 3 is the structural schematic diagram of the top cover of the thermos flask lid provided by the first embodiment of the present application Figure 2 ;

[0027] Figure 4 is the structural schematic diagram of the inner cover of the thermos flask lid provided by the first embodiment of the present application Figure 1 ;

[0028] Figure 5 is the structural schematic diagram of the inner cover of the thermos flask lid provided by the first embodiment of the present application Figure 2 ;

[0029] Figure 6 is the structural schematic diagram of the top cover of the thermos flask lid provided by the second embodiment of the present application Figure 1 ;

[0030] Figure 7 is the structural schematic diagram of the top cover of the thermos flask lid provided by the second embodiment of the present application Figure 2 ;

[0031] Figure 8Schematic diagram of the inner lid of the heat-insulating kettle lid provided by the second embodiment of the present application;

[0032] Figure 9 Assembly of the heat-insulating kettle lid provided by the second embodiment of the present application Figure 1 ;

[0033] Figure 10 Assembly of the heat-insulating kettle lid provided by the second embodiment of the present application Figure 2 .

[0034] List of components and reference numerals:

[0035] 1 Top cover, 11 Locking rib position, 12 Snap protrusion, 13 Through hole, 131 Upper side wall, 132 Lower side wall, 14 Stop rib, 15 Limit protrusion;

[0036] 2 Inner lid, 21 Unlocking part, 211 Buckling position, 212 Connection end, 213 Buckling end, 214 Pressing part, 2141 Pressing surface, 2142 Anti-slip protrusion, 22 Card slot, 23 Stop bump, 24 Bottom wall, 25 Annular side wall, 26 Gap, 27 Limit groove;

[0037] 3 Button. Detailed implementation manners

[0038] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail by way of examples with reference to the accompanying drawings of the specification.

[0039] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may 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.

[0040] In addition, in the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", "longitudinal", etc. are based on the orientation or positional relationships shown in the drawings, and are 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.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] In the embodiment of the present application, a thermos pot cover is provided. For the convenience of explanation and understanding, the following contents provided in the present application are all described based on the illustrated product structure. Of course, it can be understood by those skilled in the art that the above structure is only used as a specific example and schematic description, and cannot constitute a specific limitation on the technical solution provided in the present application.

[0044] Reference Figures 1 to 10 As shown, a thermos pot lid provided in the present application comprises a top cover 1 and an inner cover 2 which are detachably connected together, a connecting portion is provided on one side of the top cover 1, a locking rib position 11 is provided on the other side opposite to the top cover 1, the inner cover 2 is provided with a matching portion and an unlocking portion 21, the unlocking portion 21 is provided with a buckle position 211 matched with the locking rib position 11, and the buckle position 211 is located on the side of the unlocking portion 21 away from the matching portion; when the connecting portion is matched with the matching portion, the top cover 1 is flipped downward with the connecting portion as a rotation fulcrum so that the locking rib position 11 is buckled with the buckle position 211, thereby locking the top cover 1 and the inner cover 2 along the first direction X; the unlocking portion 21 can be deformed toward one side of the matching portion so that the locking rib position 11 is upwardly disengaged from the buckle position 211, thereby unlocking the top cover 1 and the inner cover 2 along the first direction X. In addition, when the buckle position 211 is buckled with the locking rib position 11, and the matching portion is matched with the matching portion, the inner cover 2 and the top cover 1 are abutted against each other in a direction perpendicular to the first direction X and are kept fixed, so thatFigure 1 For example, if the first direction X is the vertical direction, the direction perpendicular to the first direction X can be understood as any direction in the horizontal plane, that is, the radial direction of the top cover 1 and the inner cover 2.

[0045] In the thermos flask lid provided by the present application, the top cover 1 and the inner cover 2 are connected by the cooperation of the mating part and the connecting part, and are locked by the engagement of the locking rib 11 and the buckling position 211, so that when the top cover 1 and the inner cover 2 are properly mated, they have relatively good firmness and are not easily separated by accidental touch. When the locking rib 11 is engaged with the buckling position 211, the mating state of the mating part and the connecting part is locked, so that the top cover 1 and the inner cover 2 are relatively fixed. When the locking rib 11 is disengaged from the buckling position 211, the top cover 1 and the inner cover 2 are unlocked, and the mating part and the connecting part can be disengaged to separate the top cover 1 and the inner cover 2 from each other. During assembly, only need to pre-fit the connecting part and the mating part, and then flip the top cover 1 downward with the connecting part as the rotation fulcrum to engage the locking rib 11 with the buckling position 211, then the top cover 1 and the inner cover 2 can be locked. When disassembling the top cover 1 and the inner cover 2, only need to press the unlocking part 21 to deform so that the locking rib 11 is disengaged from the buckling position 211, then the top cover 1 and the inner cover 2 can be unlocked. Therefore, the disassembly and assembly of the top cover 1 and the inner cover 2 are simple, fast and easy to operate.

[0046] The present application does not limit the specific structures of the mating part and the connecting part and their corresponding mating methods. For example, the two can be set as a snap structure capable of snap connection, a pivot structure capable of rotational connection, a hook structure capable of hook connection, and so on. In a preferred embodiment, as Figure 2 and Figure 4 shown, the connecting part is configured as a snap protrusion 12, and the mating part is configured as a slot 22 adapted to the snap protrusion 12, so that the top cover 1 and the inner cover 2 are connected or separated by the engagement or disengagement of the slot 22 and the snap protrusion 12, making the disassembly and assembly of the top cover 1 and the inner cover 2 simple, fast, and can be carried out manually without the aid of auxiliary tools. When specifically installing the top cover 1 and the inner cover 2, first snap the snap protrusion 12 into the slot 22, and then flip the top cover 1 to engage the locking rib 11 with the buckling position 211. When disassembling the top cover 1 and the inner cover 2, first press the unlocking part 21 to make the unlocking part 21 deform inward to disengage the locking rib 11 from the buckling position 211, and then the snap protrusion 12 can be removed from the slot 22 to separate the top cover 1 and the inner cover 2.

[0047] In addition, the present application does not limit the number of the locking rib 11 and the unlocking part 21 respectively provided on the top cover 1 and the inner cover 2. The two can be locked by setting a group of the locking rib 11 and the unlocking part 21, or can be locked in multiple directions by setting multiple groups of the locking rib 11 and the unlocking part 21.

[0048] Embodiment 1: As Figures 1 to 3As shown, the top cover 1 is provided with a through hole 13. The through hole 13 has an upper side wall 131 near the center of the top cover 1 and a lower side wall 132 opposite to the upper side wall 131. The lower side wall 132 constitutes the locking rib position 11. Those skilled in the art can understand that, on the one hand, the existence of the through hole 13 facilitates the fitting (such as Figure 1 the button 3 for pressing out water shown in) installed between the top cover 1 and the inner cover 2 to extend out of the thermos flask lid. On the other hand, the existence of the through hole 13 also provides an avoidance space for the cooperation between the locking rib position 11 and the buckling position 211, so that the lower side wall 132 and the buckling position 211 are buckled within the through hole 13. Therefore, the setting of the through hole 13 realizes the multi - use of one structure. Moreover, when the lower side wall 132 and the buckling position 211 are buckled within the through hole 13, the tightening state of the buckling position 211 on the lower side wall 132 can also enhance the strength of the through hole 13, contribute to restricting the deformation of the through hole 13, and thus is beneficial to protecting the fitting extending from the through hole 13.

[0049] As a preferred embodiment of this embodiment, as shown in Figure 1 , Figure 2 and Figure 4 shown, the inner cover 2 is provided with stop bumps 23 on both sides of the unlocking part 21, and the top cover 1 is provided with stop ribs 14 on two side edges of the through hole 13. When the locking rib position 11 is buckled to the buckling position 211, the stop bumps 23 abut against the stop ribs 14 between the two stop ribs 14. Those skilled in the art can understand that when the locking rib position 11 and the buckling position 211 are buckled in place, the stop bumps 23 on both sides of the unlocking part 21 just abut against the stop ribs 14 arranged on two side edges of the through hole 13, playing a positioning role and isolating the unlocking part 21 within the through hole 13. When pressing the unlocking part 21, the unlocking part 21 can only deform along the through hole 13. Also, through the blocking of the stop bumps 23, a tightening effect is formed on two side edges of the through hole 13, preventing the two sides of the through hole 13 from closing inwards towards the inside of the through hole 13 and affecting the deformation of the unlocking part 21.

[0050] As a preferred embodiment of this embodiment, the inner cover 2 is provided with one unlocking part 21 and two matching parts along the circumferential direction, and the distances between the two matching parts and the unlocking part 21 are equal respectively. Taking the embodiment where the matching part is the clamping groove 22 as an example, as shown in Figures 1 to 4 shown, the inner cover 2 is provided with one unlocking part 21 and two clamping grooves 22 along the circumferential direction. When the top cover 1 and the inner cover 2 are clamped through the two clamping grooves 22 and the buckle protrusion 12 and are buckled through the locking rib position 11 and the buckling position 211, a three - point triangular connection is formed between the top cover 1 and the inner cover 2, and the connection is stable and reliable.

[0051] Embodiment 2: As shown in Figures 6 to 10As shown, the inner cover 2 is provided with two unlocking parts 21 arranged at intervals in the circumferential direction, and the included angle between the connecting lines of the two unlocking parts 21 and the central axis of the inner cover 2 is less than 60°. In this embodiment, the top cover 1 and the inner cover 2 are locked by the cooperation of two locking rib positions 11 and buckling positions 211, and the locking strength is higher. The included angle between the connecting lines of the two unlocking parts 21 and the central axis of the inner cover 2 is less than 60°, so that when the user presses the unlocking parts 21, the user can press the two unlocking parts 21 simultaneously by adjacent two fingers. For example, the user can press the two unlocking parts 21 simultaneously by the index finger and the middle finger, and the index finger and the middle finger will not open too much, thus facilitating the exertion of force. Specifically, when the inner cover 2 is provided with two unlocking parts 21, the top cover 1 is correspondingly provided with two locking rib positions 11. As Figure 6 shown, the two locking rib positions 11 can be arranged at intervals on the inner side of the top cover 1 along the top cover 1.

[0052] Regarding the specific structure of the unlocking part 21, in a preferred embodiment, as Figure 5 shown, the unlocking part 21 has a connecting end 212, a buckling end 213 located above the connecting end 212, and a pressing part 214 extending between the connecting end 212 and the buckling end 213. The connecting end 212 is integrally connected to the inner cover 2, and the buckling position 211 is formed at the buckling end 213. Specifically, the pressing part 214 constitutes a force application position for pressing the unlocking part 21 to deform. By pressing the pressing part 214 inward, the unlocking part 21 is deformed inward as a whole, and then the locking rib position 11 and the buckling position 211 of the buckling end 213 are unlocked.

[0053] In a preferred embodiment, as Figure 5 shown, a pressing surface 2141 is provided on the side of the pressing part 214 facing away from the mating part, and the pressing surface 2141 is provided with protruding anti-slip protrusions 2142. By providing the anti-slip protrusions 2142, the friction between the pressing surface 2141 and the finger can be increased, and the phenomenon of slippage can be prevented when the finger presses the pressing surface 2141 tightly.

[0054] In a preferred embodiment, as Figure 5As shown, the inner cover 2 includes a bottom wall 24 and an annular side wall 25 surrounding the bottom wall 24. The annular side wall 25 is provided with a notch. The connecting end 212 is connected to the bottom wall 24. The pressing portion 214 and the buckling end 213 are located in the notch and have a gap 26 between them and the annular side wall 25. The engaging portion is provided on the annular side wall 25. Those skilled in the art can understand that the unlocking portion 21 is only connected to the bottom wall 24 of the inner cover 2 through the connecting end 212. The pressing portion 214 and the buckling end 213 are located in the notch and have a gap 26 between them and the annular side wall 25, making the whole unlocking portion 21 have elasticity to bend and deform relative to the bottom wall 24. And during the deformation process, the existence of the gap 26 also prevents the annular side wall 25 from interfering with the unlocking portion 21.

[0055] Furthermore, one of the top cover 1 and the annular side wall 25 is provided with a limiting protrusion, and the other of them is provided with a limiting groove. When the top cover 1 and the inner cover 2 are locked, the limiting protrusion cooperates with the limiting groove to limit the relative circumferential rotation of the top cover 1 and the inner cover 2. For the foregoing Embodiment 1, its circumferential limit of the top cover 1 and the inner cover 2 can be realized through the resistance between the stopping bump 23 and the rib 14. Therefore, the top cover 1 and the inner cover 2 may no longer be limited by the cooperation of the limiting protrusion and the limiting groove. Of course, to improve the reliability of the limit, the limit can also be increased through the cooperation of the limiting protrusion and the limiting groove. And for the foregoing Embodiment 2, the circumferential limit of the top cover 1 and the inner cover 2 can be realized through the cooperation of the limiting protrusion 15 and the limiting groove 27. As Figures 7 to 9 shown, the embodiment in which the top cover 1 is provided with a limiting protrusion 15 and the inner cover 2 is provided with a limiting groove 27 is schematically illustrated in the present application. When the locking rib position 11 and the buckling position 211 are buckled in place, the limiting protrusion 15 and the limiting groove 27 are also just in place, realizing the locking of the top cover 1 and the inner cover 2 and also realizing the circumferential limit of the two.

[0056] What is not described in this application can be realized by adopting or referring to the existing technology.

[0057] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0058] 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, a connecting portion is provided on one side of the top lid, and a locking rib position is provided on the opposite side; the inner lid is provided with a matching portion corresponding to the position of the connecting portion, and an unlocking portion corresponding to the position of the locking rib position; the matching portion can abut against the connecting portion along a first direction, and the unlocking portion can abut against the locking rib position along the first direction, so that the top lid and the inner lid are fixed to each other along the first direction; wherein, in a state where the unlocking portion is engaged with the locking rib position, the wall of the top lid and the wall of the inner lid abut against each other in a direction perpendicular to the first direction, so that the top lid and the inner lid are fixed to each other; the unlocking portion can be deformed toward a side away from the locking rib position, so that the unlocking portion is disengaged from the locking rib position.

2. The heat-insulating kettle lid according to claim 1, characterized in that, the top lid is provided with a through hole, the through hole has a lower side wall, and the lower side wall constitutes the locking rib position.

3. The heat-insulating kettle lid according to claim 2, characterized in that, the inner lid is provided with stop bumps on both sides of the unlocking portion, the top lid is provided with retaining ribs along two side edges of the through hole, and when the locking rib position is buckled to the unlocking portion, the stop bumps are between the two retaining ribs and abut against the retaining ribs.

4. The heat-insulating kettle lid according to claim 2, characterized in that, the inner lid is provided with one unlocking portion and two matching portions arranged circumferentially, and the distances between the two matching portions and the unlocking portion are equal respectively.

5. The heat-insulating kettle lid according to claim 1, characterized in that, the inner lid is provided with two unlocking portions arranged at intervals circumferentially, and the included angle between the connecting lines of the two unlocking portions and the central axis of the inner lid is less than 60°.

6. The heat-insulating kettle lid according to claim 1, characterized in that, the connecting portion is configured as a snap protrusion, and the matching portion is configured as a slot adapted to the snap protrusion.

7. The heat-insulating kettle lid according to any one of claims 1-6, characterized in that, the unlocking portion has a connecting end, a buckling end located above the connecting end, and a pressing portion extending between the connecting end and the buckling end, the connecting end is integrally connected with the inner lid, and the buckling end is provided with a buckling position for buckling with the locking rib position.

8. The heat-insulating kettle lid according to claim 7, characterized in that, a pressing surface is provided on a side of the pressing portion facing away from the matching portion, and the pressing surface is provided with protruding anti-slip protrusions.

9. The heat-insulating kettle lid according to claim 7, characterized in that, the inner lid includes a bottom wall and an annular side wall surrounding the bottom wall, the annular side wall is provided with a notch, the connecting end is connected to the bottom wall, the pressing portion and the buckling end are located in the notch and have a gap with the annular side wall, and the matching portion is provided on the annular side wall.

10. The heat-insulating kettle lid according to claim 9, characterized in that, One of the top cover and the annular side wall is provided with a limiting protrusion, and the other of the two is provided with a limiting groove. When the top cover and the inner cover are locked, the limiting protrusion and the limiting groove cooperate to limit the relative circumferential rotation of the top cover and the inner cover.

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