Heat preservation kettle cover

Abstract

The utility model discloses a heat preservation kettle cover which comprises a cover body and a water outlet valve assembly. The cover body is provided with a mounting channel. The water outlet valve assembly comprises a valve rod and a valve block, the valve block is arranged on one side of the cover body, the valve rod is movably installed in the installation channel, and the valve block is detachably connected to the first end of the valve rod. The valve rod can move in the axial direction of the installation channel so as to drive the valve plate to be close to or away from the cover body. The inner diameter of the installation channel is larger than the outer diameter of the valve rod so that the valve rod can be converted into the state of inclining relative to the axial direction of the installation channel. According to the scheme, the valve plate and the valve rod are configured to be in an inclinable form, and a part of the area of the valve plate is allowed to be driven away to release sealing, so that decompression is more labor-saving, and user operation is more convenient.

Description

Technical Field

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

[0002] A thermos flask is a common water container in daily life, with heat preservation function. It usually consists of a thermos flask body and a thermos flask lid. The thermos flask lid generally includes a lid body and a water outlet valve piece. Specifically, a water outlet channel is usually provided on the lid body, and the water outlet valve piece can cover the entrance of the water outlet channel to play a role of opening and closing.

[0003] During the use of the thermos flask, the liquid will flow through and enter the water outlet channel, which causes the water outlet valve piece to be often immersed in the liquid. After long-term use, stains are likely to remain on the surface of the water outlet valve piece. And because the water outlet valve piece in a conventional thermos flask has a non-removable structure and the moving stroke of the water outlet valve piece is relatively short, even when the water outlet valve piece moves to the extreme position, the distance between the water outlet valve piece and the lid body is still small. It is difficult for users to insert the cleaning component between the water outlet valve piece and the lid body to clean the upper side of the water outlet valve piece during cleaning, which further leads to the upper side of the water outlet valve piece being prone to dirt accumulation and affecting drinking water hygiene.

[0004] After analysis, it is found that the reason why the existing technology often designs the water outlet valve piece as non-removable is that, due to the difference in air pressure inside and outside the thermos flask, a pressure relief valve is often additionally provided on the thermos flask lid. And in order to save space, the pressure relief valve is often stacked on the water outlet valve piece, thus reducing the structural space of the water outlet valve piece and making it difficult to design a removable structure on the water outlet valve piece. If the pressure relief valve is cancelled, there will be a problem that it is difficult to open the lid due to the imbalance of internal and external air pressures. Based on this, how to make the thermos flask lid take into account easy opening and easy cleaning of the water outlet valve piece is an important innovation direction in the field of thermos flasks. Utility Model Content

[0005] This application provides a thermos flask lid to improve or solve to a certain extent the technical problem that the easy cleanability and easy opening property of the existing thermos flask lid cannot coexist.

[0006] The technical solution adopted in this application is as follows:

[0007] A heat preservation kettle lid, comprising a lid body and a water outlet valve assembly; the lid body is provided with an installation channel; the water outlet valve assembly includes a valve rod and a valve plate, the valve plate is arranged on one side of the lid body, the valve rod is movably installed in the installation channel, and the valve plate is detachably connected to the first end of the valve rod; wherein, the valve rod can move along the axial direction of the installation channel to drive the valve plate to approach or move away from the lid body; the inner diameter of the installation channel is greater than the outer diameter of the valve rod, so that the valve rod can be transformed into a state where the axis of the valve rod and the axis of the installation channel are inclined to each other, and the included angle between the projection of the axis of the valve rod and the axis of the installation channel on the vertical plane in the inclined state is greater than 0°.

[0008] For example, optionally, when the valve rod is inclined to the maximum angle relative to the installation channel, the included angle between the axis of the valve rod and the axis of the installation channel is A, and 0.6° ≤ A ≤ 3.5°.

[0009] Based on the heat preservation kettle lid provided by the above technical solution, since the valve rod can swing relative to the installation channel, the corresponding valve plate can also swing with the valve rod, that is, the valve plate can move away from the gasket in an inclined state. The effect of this structure is that when there is an internal and external air pressure difference in the heat preservation kettle, the valve plate is affected by the gas pressure. At this time, the valve plate can swing and incline, so that the downward pressure can be adaptively transmitted through the structure, making some areas of the valve plate in contact with the gasket separate from the gasket earlier than other areas. As long as a certain area separates from the gasket, the heat preservation kettle can partially relieve pressure, and then it is easier for other areas of the valve plate to separate from the gasket, thus achieving complete pressure relief. That is, the heat preservation kettle lid adopting the above technical solution can realize the process of gradually changing from micro pressure relief to complete pressure relief. In the existing non-swingable valve plate structure, affected by the structure and stroke design, all areas of the valve plate in contact with the gasket must leave the gasket at the same time, and it is impossible to achieve the more labor-saving action of some parts of the valve plate separating from the gasket first. It can be seen that compared with the prior art, the heat preservation kettle lid adopting the above technical solution is more labor-saving when relieving pressure. Moreover, due to the simple structure and no occupation of the structural space of the valve plate, it is convenient to design the valve plate and the valve rod as a detachable structure, realizing the function of detachable cleaning of the valve plate, thus taking into account the two technical requirements of easy pressure relief and easy cleaning.

[0010] Limiting the minimum value of the maximum angle between the axes of the valve stem and the installation channel can ensure that the valve stem has sufficient swing space, so that a sufficiently large gap can be formed between a partial area of the valve plate and the gasket after the valve plate is tilted, so as to achieve normal pressure relief. Based on the size of the valve plate of a general thermos flask and comprehensively considering the deformable range of a general gasket, when the angle A satisfies 0.6° ≤ A, after the valve plate is tilted, a sufficiently large gap can be formed between the edge of the valve plate and the gasket for gas flow, so as to achieve normal pressure relief. Considering that when A is too large, the gap between the installation channel and the valve stem is too large and the swing space of the valve stem is too large, there may be a relatively large abnormal noise after the kettle shakes. Therefore, it is optionally limited that A ≤ 3.5°. Through experiments, the abnormal noise is relatively small within this angle range. In addition, if the swing space of the valve stem is too large, it may also affect the operation feel, so it cannot be too large either.

[0011] The thermos flask lid in the present application further has the following additional technical features:

[0012] The lid body is connected with a gasket, and the valve plate realizes sealing by abutting against the gasket; wherein, the valve stem has a first installation position and a second installation position arranged along the axial direction of the valve stem, and a connecting structure is provided on the part of the valve stem between the first installation position and the second installation position, and the valve plate can be connected with the connecting structure in several areas between the first installation position and the second installation position, so that the relative position of the valve plate and the valve stem along the axial direction is adjustable.

[0013] Based on the thermos flask lid with the above additional technical features, since the valve plate can be switched between several positions between the first installation position and the second installation position, the position of the valve plate relative to the gasket is adjustable. Furthermore, the extrusion amount of the valve plate on the gasket can also be adjusted, so that the stroke amount of the valve plate moving from extruding the gasket to disengaging from the gasket can be adjusted, achieving the effects of adjusting the sealing effect and the difficulty of pressure relief. Specifically, the closer the position of the valve plate is to the gasket, the better the sealing effect; the farther the valve plate is from the gasket, the easier it is to relieve pressure.

[0014] External threads are provided on the outer surface of the part of the valve stem close to the first end, and threaded holes adapted to the external threads are provided on the valve plate.

[0015] Based on the thermos flask lid with the above additional technical features, the threaded connection structure is not only convenient for disassembly and installation, but also can realize continuous adjustment of the valve plate position within the coverage of the threads.

[0016] The area of the valve stem provided with the external threads protrudes from the lid body.

[0017] Since the first end protrudes from the lid body, it is also convenient to clean the first end and the threads located on the first end, and convenient to clean the stains entrained in the threads.

[0018] The threaded hole is located at the central position of the valve plate, and the threaded hole is a blind hole; a raised portion is provided at a position corresponding to the threaded hole on a side surface of the valve plate facing away from the inlet of the threaded hole.

[0019] Based on the thermos flask lid having the above additional technical features, the raised portion can serve as a force application point when rotating the valve plate, facilitating force application. Since the raised portion is located at the rotation center of the valve plate, it is also relatively labor-saving and comfortable for the user to apply force.

[0020] Anti-slip protrusions are provided on the outer circumferential surface of the valve plate.

[0021] The provided anti-slip protrusions facilitate the user's fingers to press on the outer circumferential surface of the valve plate to achieve anti-slip, so that the user can unscrew the valve plate.

[0022] The lid body is respectively provided with a water outlet channel and a pressure relief channel, and the valve plate can seal the inlets of the water outlet channel and the pressure relief channel; wherein, a guiding mechanism is provided in the installation channel, the valve rod is provided with a cooperating mechanism that cooperates with the guiding mechanism, and the guiding mechanism is configured to, when the axis of the valve rod deviates from the axis of the installation channel, guide the valve rod to swing in a predetermined direction, so that the first end swings in a direction offset toward one side of the inlet of the water outlet channel and / or one side of the inlet of the pressure relief channel.

[0023] Optionally, the guiding mechanism includes a guiding groove provided in the installation channel; the cooperating mechanism includes a convex block provided on the valve rod, the convex block is connected to the guiding groove in a cooperating manner, and when the valve rod is coaxial with the installation channel, there is a clearance between the convex block and the guiding groove in the direction toward the inlet of the water outlet channel and / or the direction toward the inlet of the pressure relief channel.

[0024] Based on the thermos flask lid having the above additional technical features, the swinging direction of the valve plate is limited to be toward the water outlet channel and / or the pressure relief channel. Among them, when the valve plate can swing toward the water outlet channel side, the area where the valve plate first leaves the gasket after swinging is located on the side close to the pressure relief channel, and when the valve plate is inclined, the distance between the side of the valve plate close to the pressure relief channel and the gasket is greater than other parts, so it is convenient for rapid pressure relief; and after the valve plate swings toward the pressure relief channel side and the valve plate is inclined, the distance between the side of the valve plate close to the water outlet channel and the gasket is larger, which is beneficial to increasing the water flow rate when pouring water.

[0025] The lid body is provided with a driving member for driving the valve rod to move, the end surface of the second end of the valve rod opposite to the first end is a hemispherical surface, and the driving member abuts against the hemispherical surface to drive the valve rod to move.

[0026] Based on the thermos flask lid with the above additional technical features, the driving member contacts and transmits force with the hemispherical surface. According to the movement of the driving member, the contact point between the driving member and the hemispherical surface changes. Based on the change of the contact point, the direction of the driving force exerted by the driving member on the valve stem also changes, so that the valve stem swings and the axis of the valve stem deviates from the axis of the installation channel, thus achieving the effect of making the valve stem swing.

[0027] A sealing ring is sleeved on the valve stem, and the sealing ring is in sealing fit with the installation channel.

[0028] Setting the sealing ring helps to reduce the probability of water entering the inside of the lid body along the installation channel during cleaning, thereby reducing the possibility of dirt and grime accumulating inside the lid body.

[0029] Generally speaking, on the one hand, in this solution, the valve stem and the valve piece are detachably connected so that the valve piece can be removed for cleaning; on the other hand, by making the valve stem and the installation channel have a clearance fit, the valve stem has a tilting swing space, and then the valve piece can be away from the lid body in an inclined form, which helps to make it more labor-saving when relieving pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 to the present application. In the drawings:

[0031] Figure 1 is a schematic diagram of the thermos flask lid provided by the embodiment of the present application when installed on the kettle body;

[0032] Figure 2 is a schematic diagram of the thermos flask lid provided by the embodiment of the present application when the valve piece is in the open state;

[0033] Figure 3 is Figure 2 a partial enlarged view of the structure at B in

[0034] Figure 4 is a schematic diagram of each component of the thermos flask lid provided by the embodiment of the present application when the valve piece is removed;

[0035] Figure 5 is a schematic diagram of the thermos flask lid provided by the embodiment of the present application when the valve piece is connected;

[0036] Figure 6 is a schematic diagram of the thermos flask lid provided by the embodiment of the present application when the valve piece is removed;

[0037] Figure 7 is Figure 6 a partial enlarged view of the structure at C in

[0038] Figure 8Schematic half-sectional view of the heat-insulating kettle lid provided by the embodiment of the present application in the state where the valve piece is removed;

[0039] Figure 9 Schematic half-sectional view of the valve stem provided by the embodiment of the present application;

[0040] Figure 10 Schematic view of the valve stem provided by the embodiment of the present application;

[0041] Figure 11 Schematic view of the heat-insulating kettle lid provided by the second embodiment of the present application;

[0042] List of components and reference numerals:

[0043] 1. Lid body; 11. Valve stem; 111. First end; 112. Second end; 113. First installation position; 114. Second installation position; 115. Bump; 12. Valve piece; 121. Anti-slip protrusion; 122. Protrusion portion; 13. External thread; 14. Threaded hole; 21. Installation channel; 211. Guide groove; 22. Water outlet channel; 221. Water outlet channel inlet; 23. Pressure relief channel; 3. Sealing gasket; 4. Pressing wrench; 5. Sealing ring;

[0044] A1. Axis of the installation channel; A2. Axis of the valve stem. Detailed implementation manners

[0045] 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 combination with the accompanying drawings of the specification.

[0046] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0047] 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 accompanying 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.

[0048] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication 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.

[0049] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature can 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", "example", "specific example", 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 representation of the above terms does 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.

[0050] In the embodiments 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 on the basis of 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 description, and does not constitute a specific limitation on the technical solutions provided in this application.

[0051] Based on the technical solution of this application, the structure of a heat-insulating kettle lid is as Figures 1-5As shown in the figure, the heat preservation kettle lid includes a lid body 1 and a water outlet valve assembly installed on the lid body. Optionally, the lid body 1 is respectively provided with an installation channel 21, a water outlet channel 22, and a pressure relief channel 23; the water outlet valve assembly includes a driving member, a valve rod 11, and a valve plate 12. The driving member optionally includes a pressing wrench 4. The left end of the pressing wrench 4 is hinged to the lid body 1, and the right end of the pressing wrench 4 extends out of the lid body 1. The user can press down the right end of the pressing wrench 4 with their hand to drive the pressing wrench 4 to swing up and down with the left end as the axis. The valve rod 11 is arranged through the installation channel 21, and the second end 112 of the valve rod 11 contacts the pressing wrench 4, so that when the pressing wrench 4 swings up and down, the valve rod 11 can be driven to move up and down. The valve plate 12 is arranged on the lower side of the lid body 1, and the valve plate 12 is detachably connected to the first end 111 of the valve rod 11, so that the valve plate 12 can move up and down with the valve rod 11. A return spring is also connected between the valve rod 11 and the lid body 1. When no external force is applied to the water outlet valve assembly, the return spring drives the valve rod 11 to maintain or return to a specific position, so that the valve plate 12 can block and close the water outlet channel 22 and the pressure relief channel 23. In this embodiment, the lid body 1 is also connected with a gasket 3. The gasket 3 surrounds the water outlet channel 22 and the pressure relief channel 23, and the water outlet channel 22 and the pressure relief channel 23 are sealed by squeezing the gasket 3 with the valve plate 12.

[0052] It is easy to know that the driving member can also be designed into other structures as long as it can drive the valve rod 11 to move, and no special limitation is made here. Similarly, the shape of the valve plate 12, the shape of the water outlet channel 22, the shape of the pressure relief channel 23, etc. can also be designed according to specific requirements, and no specific limitation is made here.

[0053] The water outlet channel 22 and the pressure relief channel 23 are respectively arranged on the left and right sides of the axis of the lid body, and the inlets of the water outlet channel 22 and the pressure relief channel 23 respectively face the valve plate 12. When the heat preservation kettle lid is installed on the kettle body, referring to Figure 1 , the outlets of the water outlet channel 22 and the pressure relief channel 23 are both located above the gasket 3. When the valve plate 12 is away from the gasket 3, the liquid and gas can flow out of the kettle body by bypassing the gasket 3 after passing through the water outlet channel 22 and the pressure relief channel 23, realizing water outlet and pressure relief.

[0054] In view of the detachable connection between the valve plate 12 and the valve rod 11, the valve plate 12 can be removed to facilitate the cleaning of the upper surface of the valve plate 12, the lower surface of the lid body 1, and the water outlet channel 22.

[0055] Refer to Figure 2 and Figure 3, in the embodiment, the inner diameter of the installation channel 21 is greater than the outer diameter of the valve stem 11, that is, the installation channel 21 and the valve stem 11 are in clearance fit, so that the valve stem 11 can swing relative to the installation channel 21, that is, the valve stem 11 can be changed into a form in which the axis A2 of the valve stem forms a certain angle A with the axis A1 of the installation channel, making the valve stem 11 inclined relative to the installation channel. Since the valve plate 12 is connected to the valve stem 11, the valve plate 12 will be inclined when the valve stem 11 is inclined, that is, the valve plate 12 can be in the form of one side being high and the other side being low.

[0056] It should be noted that the above angle A refers to the angle formed between the projection line of the axis A2 of the valve stem in the vertical plane as shown in Figure 3 when the valve stem 11 is inclined to the limit position and the projection line of the axis A1 of the installation channel in the vertical plane, that is, the maximum angle that can be formed. When the valve stem 11 is not inclined, the valve stem 11 can be coaxial with the installation channel 21 or can be in a parallel but misaligned state relative to the installation channel 21. In the Figures 1-3 shown embodiment, when the valve stem 11 is not inclined, the valve stem 11 is coaxial with the installation channel 21.

[0057] When the pressure inside and outside the thermos is unbalanced, the valve stem 11 will generate a slight swing under the action of the resultant force, thus applying a force with an unfixed direction to the valve plate 12; and because the valve stem 11 will swing and shift, the force transmitted by the valve stem 11 to the valve plate 12 is also of an uncertain direction. Coupled with the fact that the valve plate 12 will also show an inclined form, the valve plate 12 can also achieve the state where some areas are separated from the gasket 3 earlier than other areas. Once the force with an uncertain direction causes a slight displacement of a certain area of the valve plate away from the gasket 3, the gas in the bottle can enter the pressure relief channel 23 to achieve micro-pressure relief and finally achieve complete pressure relief. In contrast, in the existing thermos lid, since the valve stem cannot swing, the valve plate 12 can only be separated from the gasket 3 synchronously, which requires a greater force to achieve. Obviously, the present embodiment is easier to achieve pressure relief than the prior art.

[0058] Continue to refer to Figure 3, the included angle A between the axis A2 of the valve stem and the axis A1 of the installation passage ranges from 0.6° to 3.5°. On the one hand, the minimum value is defined so that the maximum inclination of the valve stem 11 is sufficient to cause the valve disc 12 to have sufficient inclination to overcome the deformation of the gasket 3. On the other hand, the maximum value is defined to limit the excessive movement space of the valve stem 11, which may generate unnecessary noise, and to limit the impact on the operating feel. In this embodiment, the value of A is 0.6°. Of course, in other embodiments, the value of A can also be any value within the range of 0.6° to 3.5°, such as 0.65°, 0.8°, 1°, 1.2°, 1.5°, 1.8°, 2°, 2.5°, 3°, 3.5°, etc. The embodiments with these values can all take into account the above technical effects, and will not be listed one by one here.

[0059] As a further embodiment, referring to Figures 8-10 , along the axial direction of the valve stem 11, the valve stem 11 respectively has a first installation position 113 and a second installation position 114. A plurality of connecting structures are provided between the first installation position 113 and the second installation position 114. The valve disc 12 can be connected to any connecting structure between the first installation position 113 and the second installation position 114, so as to realize the axial fixation of the valve disc 12 and the valve stem 11, and at the same time realize the adjustable position of the valve disc 12 relative to the valve stem 11.

[0060] The specific structure of the above connecting structure may not be limited. For example, it may be a block structure, a magnetic attraction structure, etc., or any other conventional connecting structure.

[0061] In view of the fact that in the embodiment, the sealing is realized by the form of the valve disc 12 extruding the gasket 3, the extrusion force between the valve disc 12 and the gasket 3 directly affects the sealing performance. In the above embodiment, since the valve disc 12 can be connected to the valve stem 11 at multiple different axial positions, the position of the valve disc 12 relative to the gasket 3 can be adjusted, that is, the maximum compression amount between the valve disc 12 and the gasket 3 can be adjusted, so as to realize the adjustment of the force required for pressure relief. For example, referring to Figure 8 , the lower the connection position of the valve disc 12, the smaller the maximum compression amount of the valve disc 12 on the gasket 3. Therefore, the displacement amount required for the valve disc 12 to disengage from the gasket 3 is also smaller, and it is easier to realize pressure relief. However, if the maximum compression amount between the valve disc 12 and the gasket 3 is too small, it will affect the sealing effect. In some cases, the user can also manually adjust the valve disc 12 upward to a position closer to the second installation position 114, so as to make the sealing more reliable.

[0062] Furthermore, the connecting structure in the embodiment can be a threaded structure. For example, as Figure 4As shown, an external thread 13 is provided in a region on the outer surface of the valve stem 11 near the first end 111. At the same time, a threaded hole 14 adapted to the external thread 13 is provided on the valve disc 12. The valve disc 12 and the valve stem 11 are connected by means of a threaded fit. Correspondingly, referring to Figure 8 , a partial area at the bottom of the external thread 13 is the first installation position 113, and a partial area at the top of the external thread 13 is the second installation position 114.

[0063] On the one hand, the threaded structure is simple and easy to produce and operate. For example, the external thread 13 can be integrally formed with the valve stem 11, and the threaded hole 14 can also be integrally formed with the valve disc 12. There is no requirement for the material, and healthy materials can be used for manufacturing. When disassembling the valve disc 12, only the valve disc 12 needs to be unscrewed; on the other hand, the threaded structure can achieve continuous adjustment of the axial position of the valve disc 12 relative to the valve stem 11, which is beneficial to adjusting the relative position between the valve disc 12 and the gasket 3.

[0064] Optionally, referring to Figure 4 , the valve stem 11 is configured in a form where the region provided with the external thread 13 protrudes from the cover body 1, that is, regardless of the state of the valve stem 11, the external thread 13 protrudes from the cover body 1. This structure is beneficial to cleaning the external thread 13.

[0065] Optionally, the threaded hole 14 has a blind hole structure, that is, the threaded hole 14 does not penetrate the valve disc 12. In addition, the threaded hole 14 is located at the center of the valve disc 12. A protrusion 122 is provided on a side surface of the valve disc 12 facing away from the inlet of the threaded hole 14, and the protrusion 122 corresponds to the position of the threaded hole 14. The protrusion 122 can serve as a force application point when screwing the valve disc 12, facilitating the user to screw the valve disc 12 to remove the valve disc 12. And the protrusion 122 can also provide space for the threaded hole 14, which is beneficial to designing a threaded hole 14 with sufficient depth when the valve disc 12 is relatively thin, thereby increasing the engagement amount between the threaded hole 14 and the external thread 13 and helping to improve the connection stability between the valve disc 12 and the valve stem 11.

[0066] Referring to Figure 4 , an anti-slip protrusion 121 is additionally provided on the outer circumferential surface of the valve disc 12, so as to achieve an anti-slip effect when the user presses the outer circumferential surface of the valve disc 12 with a finger, facilitating the user to disassemble the valve disc 12.

[0067] Referring to Figure 6 、 7With respect to FIGS. 9 and 10, in some embodiments, the cover 1 is provided with a guiding mechanism, and the valve stem 11 is provided with a mating mechanism. The guiding mechanism is connected to the mating mechanism in a mating manner and is configured to guide the valve stem 11 to swing in a predetermined direction. Specifically, the guiding mechanism is configured to guide the valve stem 11 such that the first end 111 swings towards one side of the water outlet passage 22 and the pressure relief passage 23. Under the guidance of the guiding mechanism, after the valve stem 11 swings, the valve plate 12 can be in an inclined state with the lowest side corresponding to the pressure relief passage 23, so that a larger opening is formed between the valve plate 12 and the cover 1 on the side of the pressure relief passage 23 for rapid pressure relief; or the lowest side corresponds to the water outlet passage 22, so that a larger opening is formed between the valve plate 12 and the cover 1 on the side of the water outlet passage 22 to increase the water outlet flow rate.

[0068] As a specific optional embodiment structure of the mating mechanism, with continued reference to Figure 7 and 10 FIGS. 10 and 11, the guiding mechanism includes two guiding grooves 211 provided on the inner wall of the installation passage 21. The length direction of the guiding grooves 211 extends along the axial direction of the installation passage 21, so that the guiding grooves 211 have the function of guiding the valve stem 11 to move along the axial direction of the installation passage 21. Moreover, the depth direction of one of the guiding grooves 211 extends towards the water outlet passage 22, and the depth direction of the other guiding groove 211 extends towards the pressure relief passage 23. The mating mechanism includes two protrusions 115 provided on the valve stem 11. The two protrusions 115 are respectively connected to the two guiding grooves 211 in a mating manner, and there is a clearance between the protrusions 115 and the guiding grooves 211 in the depth direction of the guiding grooves 211, so that there is a space for relative movement between the protrusions 115 and the guiding grooves 211 in the direction towards the water outlet passage 22 and the direction towards the pressure relief passage 23, so that the valve stem 11 can swing relative to the installation passage 21, and the swinging direction is the direction in which the first end 111 faces the inlet of the water outlet passage 22 or the inlet of the pressure relief passage 23. In other directions, the guiding grooves 211 function to limit the protrusions 115 to realize the guiding of the valve stem 11, so that the valve stem 11 can only swing in a predetermined direction.

[0069] Of course, in addition to the above structure, the guiding mechanism and the mating mechanism can also be any existing structures or components with guiding functions, which will not be listed one by one here. They can be selected according to needs during specific applications.

[0070] With reference to Figure 9, in some embodiments, the end face of the first end 111 is a hemispherical surface, so that the pressing wrench 4 drives the valve stem 11 by squeezing the hemispherical surface. In view of the fact that the pressing wrench 4 realizes the downward pressing to drive the valve stem 11 by swinging up and down, when the basic position of the valve stem 11 remains unchanged, the contact point between the pressing wrench 4 and the valve stem 11 will change. Therefore, by designing the cooperation between the hemispherical surface and the pressing wrench 4, on the one hand, the influence on the movement stroke of the pressing wrench 4 is small, which helps to reduce the jamming feeling during pressing; on the other hand, as the pressing wrench 4 descends, the contact and abutting position between the pressing wrench 4 and the hemispherical surface will change, so that the direction of the force exerted by the pressing wrench 4 on the valve stem 11 will also change, thereby realizing that by pressing down the pressing wrench 4, the valve stem 11 can be actively prompted to swing, so that the valve stem 11 has a tendency to tilt.

[0071] Specifically, referring to Figure 1 and Figure 2 , as the pressing wrench 4 is pressed down, the contact point between the pressing wrench 4 and the hemispherical surface moves to the right, that is, the force application point of the pressing wrench 4 on the valve stem 11 is no longer located on the axial direction A1 of the installation channel, so that the valve stem 11 can have an unbalanced moment, and thus the valve stem 11 will swing and tilt during subsequent movement.

[0072] Referring to Figure 1 and Figure 8 , in some embodiments, a sealing ring 5 is also sleeved on the valve stem 11, and the outer edge of the sealing ring 5 abuts against the installation channel 21 to achieve a sealing fit. In view of the fact that in some cases, the first end 111 of the valve stem 11 needs to be cleaned, the sealing ring 5 is provided, which can effectively reduce the possibility of water entering the inside of the cover body 1 when cleaning the first end 111, and further reduce the possibility of dirt and grime accumulating inside the cover body 1.

[0073] In the second embodiment, referring to Figure 11 , the valve plate 12 can be switched to a flat plate shape for easy processing.

[0074] In addition, the parts not described in this application can be realized by adopting or referring to the existing technologies.

[0075] Each embodiment in this specification is described in a progressive manner. The same or similar parts between each embodiment can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments.

[0076] 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, the present application can have various changes and modifications. 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, characterized in that, Including a cover body and a water outlet valve assembly; The cover body is provided with a mounting channel; The outlet valve assembly includes a valve stem and a valve plate, wherein the valve plate is arranged on one side of the cover body, the valve stem is movably mounted on the mounting channel, and the valve plate is detachably connected to the first end of the valve stem; In which, the valve stem can move axially along the installation channel to drive the valve plate closer to or away from the cover body; the inner diameter of the installation channel is larger than the outer diameter of the valve stem, so that the valve stem can be transformed into a state where the axis of the valve stem and the axis of the installation channel are inclined to each other, and in the inclined state, the angle between the axis of the valve stem and the axis of the installation channel is greater than 0°.

2. The heat-insulating kettle lid according to claim 1, wherein, The cover body is connected with a sealing gasket, and the valve plate abuts against the sealing gasket to achieve sealing; In which, the valve stem has a first installation position and a second installation position arranged along the axial direction of the valve stem, and the part of the valve stem located between the first installation position and the second installation position is provided with a connecting structure, and the valve plate can be connected to the connecting structure at several positions between the first installation position and the second installation position, so that the relative position of the valve plate and the valve stem along the axial direction can be adjusted.

3. The heat-insulating kettle lid according to claim 2, characterized in that, The outer surface of the portion of the valve stem close to the first end is provided with an external thread, and the valve plate is provided with a threaded hole adapted to the external thread.

4. The heat-insulating kettle lid according to claim 3, wherein, The portion of the valve stem provided with the external thread protrudes from the cover body.

5. The heat-insulating kettle lid according to claim 3, wherein The threaded hole is located at the center of the valve plate, and the threaded hole is a blind hole; a protrusion is provided on a side surface of the valve plate away from the entrance of the threaded hole at a position corresponding to the threaded hole; And / or, an anti-slip protrusion is arranged on the outer circumferential surface of the valve plate.

6. The heat-insulating kettle lid according to claim 1, wherein The maximum angle between the axis of the valve stem and the axis of the installation channel is A, 0.6°≤A≤3.5°.

7. The thermos flask lid according to any one of claims 1-6, characterized in that, The cover body is respectively provided with a water outlet channel and a pressure relief channel, and the valve sheet can seal the inlet of the water outlet channel and the inlet of the pressure relief channel; In which, the installation channel is provided with a guide mechanism, and the valve stem is provided with a matching mechanism that matches the guide mechanism. The guide mechanism is configured so that when the axis of the valve stem deviates from the axis of the installation channel, the guide mechanism guides the valve stem to swing in a predetermined direction, so that the first end swings in a direction offset toward the inlet side of the water outlet channel and / or the inlet side of the pressure relief channel.

8. The heat-insulating kettle lid according to claim 7, characterized in that, The guide mechanism comprises a guide groove arranged in the installation channel; The mating mechanism includes a protrusion arranged on the valve stem, the protrusion is matingly connected to the guide groove, and when the valve stem is coaxial with the installation channel, there is an avoidance gap between the protrusion and the guide groove in the direction toward the entrance of the water outlet channel and / or toward the entrance of the pressure relief channel.

9. The thermos flask lid according to any one of claims 1-6, characterized in that, The cover body is provided with a driving member for driving the valve stem to move, and one end of the driving member is hinged to the cover body; the end surface of the second end of the valve stem opposite to the first end is a hemispherical surface, and the driving member abuts against the hemispherical surface to drive the valve stem to move.

10. The thermos flask lid according to any one of claims 1-6, characterized in that, The valve stem sleeve is provided with a sealing ring, and the sealing ring is in sealing cooperation with the installation channel.

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