Bottle cap and drinking bottle
By designing a deformable bottle cap structure, the fluid channels are connected during disinfection, solving the problem of blind spots in existing bottle cap disinfection, achieving a more comprehensive disinfection effect, and ensuring hygiene and safety when drinking.
Patent Information
- Application Number
- CN202520519967.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing bottle caps with elastic structures such as silicone valves have blind spots during disinfection, resulting in incomplete disinfection and potentially leaving microbial residues, which can affect the hygiene, safety, and shelf life of beverages.
Design a bottle cap with first and second states. In the first state, the protrusion applies force to the elastic element, causing it to deform and releasing the obstruction of the outflow channel, allowing the disinfectant fluid to pass through and achieving comprehensive disinfection. In the second state, the elastic element restores the obstruction of the outflow channel, ensuring a tight seal when drinking.
It achieves comprehensive disinfection of the bottle cap, ensuring hygiene and safety during drinking and extending shelf life. By allowing the disinfection fluid to enter the channel in the first state, it completely eliminates potential microbial residues.
Smart Images
Figure CN223949788U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bottle cap disinfecting technical field, especially a bottle cap and drinking bottle. BACKGROUND
[0002] In order to prevent the outside contamination from entering the drinking bottle when drinking, some bottle caps of drinking bottles, such as bottle caps of sports beverage drinking bottles, are provided with elastic structures, such as silica gel valves, which are placed in the channel for flowing out beverage of the suction nozzle of the bottle cap, and the passage of the suction nozzle is blocked or connected by the deformation of the elastic structure. After opening the bottle cap when drinking, the beverage is squeezed by sucking or squeezing the bottle body, so that the elastic structure is deformed and the passage is connected, and the beverage can flow out of the passage. When not drinking, the elastic structure blocks the passage under the action of elastic force, so as to block the outside contamination from entering.
[0003] In some products with high hygiene requirements, the bottle cap needs to be disinfected before being assembled to the bottle body of the drinking bottle. However, in the existing drinking bottle with elastic structure such as silica gel valve, the silica gel valve is in a sealed closed state when the bottle cap is disinfected, and the silica gel valve will block the passage for beverage flow into two disconnected parts. This structure isolation causes blind area in the disinfection of the bottle cap, so that the gas, liquid and other media used for disinfection cannot enter each part of the passage through the elastic structure, and the bottle cap cannot be disinfected more thoroughly, which may cause hidden troubles such as microbial residue, and further affect the hygiene safety and shelf life of the beverage product. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a bottle cap which can be more thoroughly disinfected when disinfected.
[0005] The utility model discloses a bottle cap for drinking bottle, which has a first state and a second state, comprising:
[0006] A cover seat is used for connecting the bottle mouth of the drinking bottle.
[0007] A suction nozzle is arranged on the cover seat and comprises an outlet channel for the liquid flow of the drinking bottle.
[0008] An outer cover comprises a cover body and a protrusion located in the middle of the cover body. In the first state, the outer cover is located at a first position relative to the cover seat, the outer cover surrounds the suction nozzle, and the outer cover blocks the suction nozzle and the external environment from one side of the suction nozzle. In the second state, the outer cover is located at a second position different from the first position relative to the cover seat, and the suction nozzle is exposed to the external environment.
[0009] The valve body comprises an elastic member which separates the outflow channel into a first channel and a second channel on both sides of the elastic member; in the second state, when the pressure difference on both sides of the elastic member is less than a first threshold value, the elastic member blocks the outflow channel so that the first channel and the second channel are not connected, and when the pressure difference on both sides of the elastic member is greater than the first threshold value, the elastic member unblocks the outflow channel and the elastic force of the elastic member tends to restore the blocking of the outflow channel; in the first state, the protrusion applies force to the elastic member to deform the elastic member, and the elastic member unblocks the outflow channel.
[0010] In some embodiments, the elastic member comprises a plurality of elastic parts distributed circumferentially, and in the first state, the protrusion penetrates the middle part of the elastic member, and the plurality of elastic parts are separated from each other.
[0011] In some embodiments, the cross-sectional dimension of the first end of the protrusion connected to the cover body is greater than the cross-sectional dimension of the second end of the protrusion away from the first end of the cover body, and in the first state, the first end of the protrusion is inserted into the outflow channel and is in sealing connection with the outflow channel, and the second end of the protrusion applies force to the elastic member.
[0012] In some embodiments, in the first state, the cross-sectional dimension of the second end of the protrusion gradually decreases in the direction away from the cover body and close to the elastic member.
[0013] In some embodiments, the protrusion comprises a cylinder fixedly connected to the cover body and one or more plate bodies located in the cylinder and fixedly connected to the inner wall of the cylinder, and the plate bodies protrude out of the cylinder in the direction away from the cover body, and in the first state, the end of the plate bodies away from the cover body applies force to the elastic member.
[0014] In some embodiments, the protrusion comprises three plate bodies uniformly distributed along the circumference of the cylinder.
[0015] In some embodiments, the mouthpiece comprises a contact part for contacting the mouth of a drinker and a non-contact part away from the cover body relative to the contact part in the first state, the outer cover comprises a first surrounding body surrounding the mouthpiece from the radial outer side of the mouthpiece and a second surrounding body surrounding the first surrounding body from the radial outer side of the first surrounding body; in the first state, the first surrounding body is in sealing connection with the non-contact part, and the first surrounding body and the cover body block the mouthpiece and the external environment from one side of the mouthpiece, and the second surrounding body is in sealing connection with the cover seat, and the second surrounding body and the cover body block the first surrounding body and the external environment from one side of the second surrounding body.
[0016] In some embodiments, in the first state, the bottle cap further comprises a weak connection connecting the outer cover and the cap seat, and after switching to the second state from the first state, the weak connection breaks.
[0017] In some embodiments, the weak connection comprises a plurality of weak connection points that break after switching to the second state from the first state, and the plurality of weak connection points are located radially outside the mouthpiece and are arranged in a circumferential direction of the mouthpiece.
[0018] The second aspect of the utility model discloses a drinking bottle, comprising a bottle body and any bottle cap described above, the cap seat of bottle cap and the bottle mouth of bottle body are connected.
[0019] The third aspect of the utility model discloses a bottle cap disinfecting method using any bottle cap described above, in the first state, the second channel is away from the cap body relative to the first channel, and the bottle cap disinfecting method comprises the following steps: making the bottle cap be in the first state, and then conveying disinfecting fluid to the second channel.
[0020] In some embodiments, the bottle cap disinfecting method further comprises: the bottle cap is clamped by using the clamping device, and disinfecting fluid is conveyed to the outer cover from the side of the outer cover away from the mouthpiece.
[0021] Based on the bottle cap provided by the utility model, when the bottle cap is disinfected, the convex part in the middle of the cap body of the bottle cap in the first state can make the elastic member deform, so that the elastic member removes the blockage of the fluid channel, so that the fluid channel remains connected, so that when the bottle cap is disinfected, disinfecting fluid can enter the cavity between the cap body and the mouthpiece through the flow channel to disinfect, and disinfection of the bottle cap can be more comprehensive and thorough.
[0022] Other features of the utility model and its advantages will become clear from the following detailed description of exemplary embodiments of the utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0023] The drawings described herein are used to provide further understanding of the utility model, and form part of the present application, the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.
[0024] Figure 1 It is the structure schematic drawing of the drinking bottle with bottle cap of the utility model embodiment;
[0025] Figure 2 It is the sectional structure schematic drawing of the bottle cap in the first state of another utility model embodiment;
[0026] Figure 3 It is Figure 2A sectional view structure schematic diagram of the bottle cap in the second state is shown;
[0027] Figure 4 A sectional view structure schematic diagram of the bottle cap in the second state is shown;
[0028] Figure 5 A Figure 4 A sectional view structure schematic diagram of the bottle cap in the second state is shown;
[0029] Figure 6 A Figure 5 A sectional view structure schematic diagram of the bottle cap in the second state is shown;
[0030] Figure 7 A sectional view structure schematic diagram of the bottle cap in the second state is shown; DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0032] Unless otherwise specifically stated, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the various examples are not intended to limit the scope of the present application. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the clarity of presentation and are shown exaggerated in some instances. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail in order to avoid obscuring the present application. In the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other example embodiments of the exemplary embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several views, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures where it is shown.
[0033] In the description of the present application, it should be understood that the use of the words "first", "second", and the like, to describe various components, is merely intended to differentiate one component from another, and does not imply a special meaning unless otherwise stated. Therefore, it should not be understood as a limitation on the scope of protection of the present application.
[0034] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirect connection through the intermediate medium. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.
[0035] For ease of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.
[0036] The bottle cap 100 of the embodiment is used for a drinking bottle, and the drinking bottle includes a bottle for containing beverage and a bottle for containing drinking water. The bottle cap 100 has a first state and a second state, and the bottle cap 100 includes a cap seat 1, a suction nozzle 2, an outer cap 3 and a valve body 4.
[0037] As shown in Figure 1 The cap seat 1 is used for connecting the bottle mouth of the drinking bottle, and in the embodiment shown in Figure 1 The cap seat 1 is installed on the bottle mouth of the bottle body 200 of the drinking bottle through threaded connection.
[0038] As shown in Figure 2 And Figure 3 The suction nozzle 2 is arranged on the cap seat 1. The suction nozzle 2 includes an outflow channel 21 for the liquid outflow of the drinking bottle. When the consumer drinks the liquid in the drinking bottle, the liquid flows out from the bottle body, flows into the mouth of the consumer through the outflow channel 21.
[0039] The outer cover 3 comprises a cover body 31 and a protrusion 32 located at the middle of the cover body 31. In the first state, the outer cover 3 is located at the first position relative to the cover seat 1, the outer cover 3 surrounds the mouthpiece 2 and the outer cover 3 separates the mouthpiece 2 from the external environment from one side of the mouthpiece 2, in the second state, the outer cover 3 is located at the second position different from the first position relative to the cover seat 1, the mouthpiece 2 is exposed to the external environment. The first state and the second state of the bottle cap refer to the state that the bottle cap is not opened and the state that the bottle cap is opened. After the bottle cap is assembled on the bottle body, the bottle cap is in the first state. When the consumer wants to drink the liquid in the bottle body, the bottle cap needs to be opened, that is, the bottle cap is switched from the first state to the second state. As shown in Figure 1 and Figure 2 , the bottle cap is in the first state, the outer cover 3 separates the mouthpiece 2 from the external environment from one side of the mouthpiece 2, that is, the outer cover 3 can seal the mouthpiece from one side of the mouthpiece 2, when the bottle cap is assembled on the bottle body, the bottle body separates the mouthpiece from the external environment from the other side of the mouthpiece, that is, the mouthpiece is sealed from the other side, so that the mouthpiece is completely separated from the external environment under the overall action of the outer cover, the cover seat and the bottle body, so as to ensure that the mouthpiece is in a hygienic environment. As shown in Figure 3 , the bottle cap is in the second state, at this time, the outer cover is in another position, the bottle cap is opened, the outer cover does not separate the mouthpiece from the external environment, the mouthpiece is exposed to the external environment, so that the consumer can suck the mouthpiece to drink the liquid in the drinking bottle.
[0040] As shown in Figure 2 , Figure 3 and Figure 5As shown, the valve body 4 comprises an elastic member 41, which comprises a silica gel valve made of silica gel. The elastic member 41 separates the outflow channel 21 into a first channel 211 and a second channel 212 located on two sides thereof. In the second state, when the pressure difference on both sides of the elastic member 41 is less than a first threshold value, the elastic member 41 blocks the outflow channel 21 so that the first channel 211 and the second channel 212 are not communicated, and when the pressure difference on both sides of the elastic member 41 is greater than the first threshold value, the elastic member 41 unblocks the outflow channel 21 and the elastic force of the elastic member 41 tends to restore the blocking of the outflow channel 21. In the second state, that is, when the bottle cap is in the open state, the elastic force of the elastic member 41 causes the elastic member to be in the state of blocking the outflow channel, but when the pressure difference on the elastic member is greater than the first threshold value, the elastic force of the elastic member is overcome, the elastic member is deformed, and the outflow channel is communicated. Specifically, when the consumer drinks the liquid in the drinking bottle, the liquid in the drinking bottle is squeezed into the outflow channel by sucking and / or squeezing the bottle body, and when the liquid pressure is large enough to deform the elastic member, the outflow channel is unblocked, and the first threshold value is set according to the size of the sucking force of the consumer when drinking the liquid in the drinking bottle and the size of the force of squeezing the bottle body. In the first state, the protrusion 32 applies a force to the elastic member 41 to deform the elastic member 41, and the elastic member 41 unblocks the outflow channel 21. In the first state, the bottle cap is in the unopened state, and the protrusion of the bottle cap of the present embodiment squeezes the elastic member 41 to deform the elastic member 41, and the first channel and the second channel of the outflow channel 21 are in a communicated state.
[0041] In the present embodiment, when the bottle cap 100 is disinfected before being assembled to the bottle, the protrusion 32 in the middle of the cap body 31 of the bottle cap 100 in the first state can deform the elastic member 41 to unblock the fluid channel, so that the fluid channel remains communicated, and the disinfecting fluid (for example, some disinfecting gas) can flow between the first channel and the second channel to thoroughly disinfect the fluid channel. At the same time, the disinfecting fluid can enter the cavity between the cap body 31 and the mouthpiece 2 through the flow channel to disinfect the part of the cap body corresponding to the mouthpiece, and the disinfection of the bottle cap 100 can be more comprehensive and thorough, so as to better ensure that the liquid in the drinking bottle is in a sterile and hygienic environment.
[0042] In some embodiments, as Figure 2 and Figure 5As shown, the elastic member 41 includes multiple elastic portions 411 distributed circumferentially. In the first state, the protrusion 32 passes through the middle of the elastic member 41, and the multiple elastic portions 411 are separated from each other. In this embodiment, by passing through the middle of the elastic member 41, the protrusion 32 can simultaneously squeeze the multiple elastic portions 411 apart, causing the multiple elastic portions 411 to deform simultaneously and causing the ends of the multiple elastic portions 411 to separate from each other, thereby achieving effective deformation of the elastic member and enabling the fluid channel to quickly and effectively switch between an interrupted state and a connected state. In the embodiment shown in the figure, as Figure 5 As shown, multiple elastic parts 411 are formed by cutting the middle of the silicone sheet using a "+" shaped cutting trajectory.
[0043] In some embodiments, such as Figure 2 As shown, the cross-sectional dimension of the first end of the protrusion 32 connected to the cap 31 is larger than the cross-sectional dimension of its second end, which is farther away from the cap 31 relative to the first end. In the first state, the first end of the protrusion 32 is inserted into the outflow channel 21 and is sealed to the outflow channel 21, while the second end of the protrusion 32 applies force to the elastic member 41. In the first state of this embodiment, the first end of the protrusion is sealed to the outflow channel, which can improve the isolation effect of the outer cap on the mouthpiece and the external environment, thereby helping to further ensure that the liquid in the drinking bottle is in sterile and hygienic conditions. The cross-sectional dimension of the first end of the protrusion is smaller than that of the first end, allowing the protrusion to better perform its sealing connection with the mouthpiece and its application of force to the elastic member, thus performing more functions.
[0044] In some embodiments, such as Figure 2 As shown, in the first state, the cross-sectional dimension of the second end of the protrusion 32 gradually decreases in the direction away from the cover 31 and close to the elastic member 41.
[0045] In some embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, the protrusion 32 includes a cylinder 321 fixedly connected to the cover 31 and one or more plates 322 located inside the cylinder 321 and fixedly connected to the inner wall of the cylinder 321. The plates 322 extend out of the cylinder 321 in a direction away from the cover 31; that is, a portion of the plates 322 is located within the cylinder 321, and a portion protrudes out of the cylinder along its axial direction. In the first state, the end of the plates 322 away from the cover 31 (i.e., the portion protruding from the cylinder) applies force to the elastic element 41. In this embodiment, the cylinder can be sealed to the suction nozzle, and the plates are used to apply force to the elastic element. The structure is simple and the function is reliable.
[0046] In some embodiments, as shown in the figure, the protrusion 32 comprises three plate bodies 322 evenly distributed along the circumference of the cylinder 321. The design of the plate bodies in this embodiment makes the protrusion capable of applying force to the elastic member more uniformly and reliably in the first state, thereby ensuring effective deformation of the elastic member and effective communication of the outflow channel. At the same time, it also makes the design of the outer cover more aesthetically pleasing.
[0047] In some embodiments, as shown in the figure, Figure 2 the mouthpiece 2 comprises a contact portion 221 for contacting the mouth of a drinker and a non-contact portion 222 away from the cover body 31 relative to the contact portion 221 in the first state, the outer cover 3 comprises a first surrounding body 331 surrounding the mouthpiece 2 from the radial outer side of the mouthpiece 2 and a second surrounding body 332 surrounding the first surrounding body 331 from the radial outer side of the first surrounding body 331; in the first state, the first surrounding body 331 is in sealing connection with the non-contact portion 222, and the first surrounding body 331 and the cover body 31 block the mouthpiece 2 from the outside environment from one side of the mouthpiece 2, the second surrounding body 332 is in sealing connection with the cover base 1, and the second surrounding body 332 and the cover body 31 block the first surrounding body 331 from the outside environment from one side of the second surrounding body 332. In this embodiment, the sealing connection between the first surrounding body 331 and the non-contact portion 222 is achieved by the pressing fit of the first surrounding body 331 and the non-contact portion 222. In the embodiment shown in the figure, the outer surface of the non-contact portion 222 is a cylindrical surface, and the inner surface of the first surrounding body is a cylindrical surface. In the first state, the first surrounding body and the non-contact portion are in interference fit to achieve sealing connection. Similarly, the sealing connection between the second surrounding body 332 and the cover base 1 is achieved by the pressing fit of the second surrounding body 332 and the cover base 1. In the first state of the bottle cap, the sealing connection between the first surrounding body 331 and the non-contact portion 222 blocks the mouthpiece from the outside environment, and the sealing connection between the second surrounding body 332 and the cover base 1 blocks the mouthpiece again, thereby further protecting the mouthpiece from being contaminated by the outside environment.
[0048] In some embodiments, as shown in the figure, Figure 2 and Figure 3 in the first state, the bottle cap 100 further comprises a weak connection portion connecting the outer cover 3 and the cover base 1, which breaks after switching from the first state to the second state. The weak connection portion is not recoverable, i.e. after the first state is switched to the second state and the weak connection portion is broken, the weak connection portion cannot be restored. Therefore, the state of the weak connection portion can be used to determine whether the bottle cap has been used, and when applied to a drinking bottle, it can be determined whether the drinking bottle is brand new and has not been opened.
[0049] In some embodiments, as shown in the drawings, the weak connection comprises a plurality of weak connection points which are broken after the first state is switched to the second state, and the plurality of weak connection points are located radially outside the mouthpiece 2 and are arranged at intervals along the circumference of the mouthpiece 2. In this embodiment, by arranging a plurality of weak connection points, the state of the weak connection can be displayed from multiple angles, thereby facilitating the consumer to observe, and at the same time, it is also convenient to reduce the size of the breaking force required when the weak connection is broken, and facilitate opening.
[0050] In some embodiments, a drinking bottle is also disclosed, comprising a bottle body 200 and any of the bottle caps 100 described above, and the cap seat 1 of the bottle cap 100 is connected to the bottle mouth of the bottle body 200.
[0051] In some embodiments, a bottle cap disinfection method using any of the bottle caps 100 described above is also disclosed, in the first state, the second channel 212 is away from the cap body 31 relative to the first channel 211, and the bottle cap disinfection method comprises: placing the bottle cap 100 in the first state, and then conveying a disinfecting fluid to the second channel 212.
[0052] In some embodiments, the bottle cap disinfection method further comprises: clamping the bottle cap 100 by using a clamping device 61, and conveying the disinfecting fluid to the outer cap 3 from the side of the outer cap 3 away from the mouthpiece 2. As shown in the drawings, the clamping device 61 clamps the bottle cap, and then the disinfection device 62 releases the disinfecting fluid (disinfecting gas in the embodiment as shown in the drawings) to disinfect the bottle cap. Figure 7
[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalent; without departing from the spirit of the technical scheme of the present application, it should be covered in the technical scheme range of the present application claimed by the present application.
Claims
1. A bottle cap for a drinking bottle, characterized in that Having a first state and a second state, comprising: a cap seat (1) for connecting a mouth of a drinking bottle; a suction nozzle (2) provided on the cap seat (1) and comprising an outflow channel for liquid outflow of the drinking bottle; an outer cover (3) comprising a cover body (31) and a protrusion (32) located at a middle part of the cover body (31), in the first state, the outer cover (3) is located at a first position relative to the cap seat (1), the outer cover (3) surrounds the suction nozzle (2) and the outer cover (3) separates the suction nozzle (2) from the external environment from one side of the suction nozzle (2), in the second state, the outer cover (3) is located at a second position different from the first position relative to the cap seat (1), the suction nozzle (2) is exposed to the external environment; a valve body (4) comprising an elastic member (41), the elastic member (41) separates the outflow channel into a first channel and a second channel located at two sides of the outflow channel, in the second state, when a pressure difference between the two sides of the elastic member (41) is less than a first threshold value, the elastic member (41) separates the outflow channel so that the first channel and the second channel are not connected, when the pressure difference between the two sides of the elastic member (41) is greater than the first threshold value, the elastic member (41) removes the separation of the outflow channel and the elastic force of the elastic member (41) makes the elastic member (41) tend to restore the separation of the outflow channel, in the first state, the protrusion (32) applies force to the elastic member (41) to make the elastic member (41) deform, and the elastic member (41) removes the separation of the outflow channel.
2. The bottle cap according to claim 1, wherein The elastic member (41) comprises a plurality of elastic parts (411) distributed in a circumferential direction, in the first state, the protrusion (32) passes through a middle part of the elastic member (41), and the plurality of elastic parts (411) are separated from each other.
3. The bottle cap according to claim 1, wherein A cross-sectional dimension of a first end of the protrusion (32) connected to the cover body (31) is greater than a cross-sectional dimension of a second end of the protrusion (32) away from the cover body (31) relative to the first end, in the first state, the first end of the protrusion (32) is inserted into the outflow channel and is in sealed connection with the outflow channel, and the second end of the protrusion (32) applies force to the elastic member (41).
4. The bottle cap according to claim 3, wherein In the first state, the cross-sectional dimension of the second end of the protrusion (32) gradually decreases in a direction away from the cover body (31) and close to the elastic member (41).
5. A closure as claimed in claim 3 or 4, wherein the closure is a bottle closure. The protrusion (32) comprises a cylinder fixedly connected to the cover body (31) and one or more plate bodies located in the cylinder and fixedly connected to an inner wall of the cylinder, the plate bodies protrude out of the cylinder in a direction away from the cover body (31), in the first state, an end of the plate bodies away from the cover body (31) applies force to the elastic member (41).
6. The bottle cap according to claim 5, wherein The protrusion (32) comprises three plate bodies uniformly distributed in a circumferential direction of the cylinder.
7. The bottle cap according to claim 1, wherein The nozzle (2) comprises a contact part for contacting with the mouth of a drinker and a non-contact part away from the cover (31) relative to the contact part in the first state, the outer cover (3) comprises a first surrounding body surrounding the nozzle (2) from the radial outside of the nozzle (2) and a second surrounding body surrounding the first surrounding body from the radial outside of the first surrounding body; in the first state, the first surrounding body is in sealing connection with the non-contact part, and the first surrounding body and the cover (31) cut off the nozzle (2) from the outside environment from one side of the nozzle (2), the second surrounding body is in sealing connection with the cover seat (1), and the second surrounding body and the cover (31) cut off the first surrounding body from the outside environment from one side of the second surrounding body.
8. The bottle cap of claim 1, wherein In the first state, the bottle cap further comprises a weak connection part connecting the outer cover (3) and the cover seat (1), and after switching from the first state to the second state, the weak connection part is broken.
9. The bottle cap according to claim 8, wherein The weak connection part comprises a plurality of weak connection points which are broken after switching from the first state to the second state, and the plurality of weak connection points are located on the radial outside of the nozzle (2) and are arranged at intervals along the circumference of the nozzle (2).
10. A drinking bottle characterised in that The bottle cap comprises a bottle body and a bottle cap as claimed in any one of claims 1-9, and the cover seat (1) of the bottle cap is connected with the bottle mouth of the bottle body.