A quick opening and closing structure of a feeding bottle

Abstract

A quick-opening and closing baby bottle is disclosed, involving a snap-lock structure for opening and closing. This addresses the shortcomings of current baby bottle opening and closing techniques, which result in inconvenient operation and poor user experience. The snap-lock structure securely connects a bottle body assembly and a nipple assembly. The nipple assembly includes a nipple portion and a first connecting portion, with an elastic sealing skirt at the bottom of the nipple portion. The bottle body assembly includes a bottle body and a second connecting portion. The snap-lock structure includes a first snap and a second snap respectively located on the inner wall of the first connecting portion and the outer wall of the second connecting portion. The first and second snaps are respectively provided with axially engaging positioning protrusions and positioning grooves. During the snap-locking and positioning process, the second connecting portion rotates relative to the elastic sealing skirt while axially compressing it. The elastic sealing skirt then abuts against the positioning groove due to its rebound force. The relative movement of the bottle body assembly and the nipple assembly in the axial direction eliminates radial deformation found in existing solutions, thereby reducing wear and making opening and closing easy and smooth.

Description

Technical Field

[0001] This utility model relates to the field of baby bottles, and in particular to a snap-lock structure for opening and closing baby bottles. Background Technology

[0002] A baby bottle is a container for holding milk, consisting of a bottle body and a nipple. These are typically secured by a threaded connection. The applicant previously filed a patent for a quick-closing baby bottle (publication number: CN108938433A), which uses a snap-fit ​​structure for quick opening and closing. However, this snap-fit ​​structure achieves engagement through radial deformation of a plastic part. During engagement, the positioning groove and positioning protrusion radially overlap, causing the first connecting part of the nipple to deform outwards and the second connecting part of the bottle to deform inwards. Over time, this deformation will increase, affecting the sealing effect and potentially leading to snap-fit ​​failure, thus impacting the user experience.

[0003] Furthermore, existing structures that use radial deformation of plastic parts to achieve snap-fit ​​positioning can hinder radial deformation of the plastic parts during use when the user's hand position corresponds to the snap-fit ​​position. This results in a clunky and unsmooth opening and closing operation, leading to a poor user experience. Utility Model Content

[0004] Based on this, in order to solve the technical shortcomings of current baby bottles that are inconvenient to open and close and have a poor user experience, this invention proposes a baby bottle with a quick opening and closing structure.

[0005] To address the shortcomings of the technology proposed in this invention, the following technical solution is adopted:

[0006] A baby bottle with a quick-opening and closing structure includes a bottle body assembly and a nipple assembly fixedly connected by a snap-fit ​​structure. The nipple assembly includes a nipple portion and a first connecting portion, which are integrally formed. The first connecting portion is annularly located at the bottom end of the nipple portion. An elastic sealing skirt extending into the first connecting portion is also provided at the bottom opening of the nipple portion. The elastic sealing skirt is spaced apart from the inner wall of the first connecting portion, forming an annular groove between them. The elastic sealing skirt has a skirt edge protruding outward toward the inner wall of the first connecting portion. The bottle body assembly includes a bottle body and a second connecting portion integrally formed at the opening of the bottle body. The second connecting portion has a diameter smaller than that of the first connecting portion. The connecting part has an annular structure; the snap-fit ​​structure includes a first snap-fit ​​and a second snap-fit ​​respectively located on the inner wall of the first connecting part and the outer wall of the second connecting part. The first connecting part is sleeved on the outside of the second connecting part and is snapped and fixed by the first snap-fit ​​and the second snap-fit. The first snap-fit ​​and the second snap-fit ​​are respectively provided with a positioning protrusion and a positioning groove for axial snap-fit ​​engagement. During the snap-fit ​​positioning process of the bottle assembly and the nipple assembly through the positioning protrusion and the positioning groove, the second connecting part rotates relative to each other in the state of axially compressing the elastic sealing skirt. After the positioning protrusion is placed in the positioning groove, the positioning protrusion abuts against the positioning groove under the rebound force of the elastic sealing skirt.

[0007] Further defining technical features of the present invention include:

[0008] The positioning protrusion is located on the upper side wall of the first buckle, and the positioning groove is located on the lower side wall of the second buckle. Alternatively, the positioning protrusion is located on the lower side wall of the second buckle, and the positioning groove is located on the upper side wall of the first buckle.

[0009] The second connecting part has an inclined sealing edge inside the top opening. When the positioning protrusion is in the sealing state in the positioning groove, the elastic sealing skirt rebounds and the edge of the elastic sealing skirt abuts against the inclined sealing edge to form a sealing state.

[0010] The skirt edge and the elastic sealing skirt are connected by an arc-shaped connecting part, which faces the annular groove.

[0011] The nipple part is fixed to the first connecting part to form an integral structure through secondary molding.

[0012] The first connecting part is provided with an annular protrusion, and the nipple part is provided with a corresponding annular connecting groove. The lower side of the annular connecting groove wraps around the lower side of the annular protrusion and extends at least partly to the position of the annular groove.

[0013] The first buckle includes a first inclined portion, and the positioning protrusion is a protrusion provided on the upper side wall of the first inclined portion;

[0014] The second buckle includes a second inclined portion, the positioning groove is a groove with an opening facing downward on the lower side wall of the second inclined portion, and a limiting portion is provided vertically downward at the lower end of the end of the second inclined portion;

[0015] When the positioning protrusion is engaged in the positioning groove, the end of the first inclined part abuts against the limiting part.

[0016] The outer side of the first connecting part is provided with a plurality of inclined guide parts, the inclined guide parts are spaced apart from the first buckle, and the total number of the first buckle and the inclined guide parts corresponds to the number of the second buckle.

[0017] The second connecting part has a stepped part on its lower side. When the positioning protrusion is engaged with the positioning groove, the gap between the bottom of the first connecting part and the stepped part of the second connecting part is the axial gap.

[0018] The beneficial effects of this invention are as follows: In this invention's baby bottle, the positioning protrusion and positioning groove are positioned in the vertical axial direction. When the bottle body assembly and nipple assembly are fixedly connected, they move relative to each other in the axial direction, eliminating radial deformation as in existing solutions, thus reducing wear and making opening and closing easier. Simultaneously, with the assistance of an elastic sealing skirt, when the positioning protrusion abuts against the second snap-fit, the elastic sealing skirt deforms under pressure. When the positioning protrusion aligns with the positioning groove, the elastic sealing skirt rebounds, causing the positioning protrusion to engage within the positioning groove. Under the action of the elastic sealing skirt, the positioning protrusion will not slip out of the positioning groove, thereby ensuring a stable and reliable connection between the bottle body assembly and the nipple assembly. Furthermore, the edge of the rebounding elastic sealing skirt abuts against the outside of the second connecting part, thus achieving a seal between the elastic sealing skirt and the second connecting part. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the baby bottle of this utility model;

[0020] Figure 2 This is a structural diagram of the bottle body assembly and nipple assembly of the present invention placed together;

[0021] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the bottle body assembly and nipple assembly of the present invention in the initial state of compression.

[0023] Figure 5 yes Figure 4 Enlarged view of the structure at point B;

[0024] Figure 6This is a schematic diagram showing the alignment of the positioning groove and positioning protrusion of the bottle body assembly and nipple assembly of the present invention.

[0025] Figure 7 yes Figure 6 Enlarged structural diagram at point C;

[0026] Figure 8 This is a schematic diagram of the sealed state of the bottle body assembly and nipple assembly of the baby bottle of this utility model;

[0027] Figure 9 yes Figure 8 Enlarged structural diagram at point D;

[0028] Among them, 1. nipple assembly; 11. first connecting part; 111. annular protrusion; 12. nipple part; 121. elastic sealing skirt; 122. annular groove; 123. skirt edge; 124. arc-shaped connecting part; 125. annular connecting groove; 13. inclined guide part;

[0029] 2. Bottle body assembly; 21. Second connecting part; 211. Stepped part; 212. Inclined sealing edge; 22. Bottle body;

[0030] 3. Buckle structure; 31. First buckle; 311. Positioning protrusion; 312. First inclined part; 313. Protrusion part; 32. Second buckle; 321. Positioning groove; 322. Second inclined part; 323. Groove part; 324. Limiting part. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] like Figures 1 to 9 As shown, the present invention discloses a quick-opening and closing baby bottle, comprising a bottle body assembly 2 and a nipple assembly 1 fixedly connected by a snap-fit ​​structure 3, wherein:

[0035] The nipple assembly 1 includes a nipple portion 12 and a first connecting portion 11. The nipple portion 12 and the first connecting portion 11 are integral structures. The first connecting portion 11 is annular and located at the bottom end of the nipple portion 12. An elastic sealing skirt 121 extending into the first connecting portion 11 is also provided at the bottom opening of the nipple portion 12. The elastic sealing skirt 121 is spaced apart from the inner sidewall of the first connecting portion 11, and an annular groove 122 is formed between them. The elastic sealing skirt 121 is provided with a skirt edge 123 protruding outward toward the inner wall of the first connecting portion 11.

[0036] The bottle body assembly 2 includes a bottle body 22 and a second connecting part 21 integrally formed at the opening of the bottle body 22. The second connecting part 21 has an annular structure with a diameter smaller than that of the first connecting part 11.

[0037] The buckle structure 3 includes a first buckle 31 and a second buckle 32 respectively disposed on the inner wall of the first connecting part 11 and the outer wall of the second connecting part 21. The first connecting part 11 is sleeved on the outside of the second connecting part 21 and is fixed by the first buckle 31 and the second buckle 32.

[0038] The first buckle 31 and the second buckle 32 are respectively provided with a positioning protrusion 311 and a positioning groove 321 for axial engagement. During the engagement and positioning process of the bottle body assembly 2 and the nipple assembly 1 through the positioning protrusion 311 and the positioning groove 321, the second connecting part 21 rotates relative to the elastic sealing skirt 121 in a state of axial compression. After the positioning protrusion 311 is placed in the positioning groove 321, the positioning protrusion 311 engages and abuts against the positioning groove 321 under the rebound force of the elastic sealing skirt 121. The preferred solution is that the upper opening edge of the second connecting part 21 elastically abuts against the skirt edge 123 of the elastic sealing skirt 121. The skirt edge 123 not only seals the upper opening edge of the second connecting part 21 with a relatively large contact surface, but also transforms the skirt edge 123 into a relative longitudinal elastic holding force between the second connecting part 21 and the first connecting part 11 through compression deformation.

[0039] In specific implementation, the positioning protrusion 311 is located on the upper side wall of the first buckle 31, and the positioning groove 321 is located on the lower side wall of the second buckle 32. Alternatively, the positions of the positioning protrusion 311 and the positioning groove 321 can be interchanged as needed, that is, the positioning protrusion 311 is located on the lower side wall of the second buckle 32, and the positioning groove 321 is located on the upper side wall of the first buckle 31.

[0040] like Figure 8 As described above, an axial gap is formed between the bottle assembly 2 and the nipple assembly 1. The so-called axial direction refers to the direction pointed to by the central axis of the first buckle 31 or the second buckle 32, also known as the vertical direction of the entire product; the positioning protrusion 311 and the positioning groove 321 are set in the vertical direction, so that when the bottle body assembly 2 and the nipple assembly 1 are fixedly connected, the bottle body assembly 2 and the nipple assembly 1 move relative to each other in the direction of the lower side wall, which can eliminate the radial deformation in the existing solution and thus reduce wear.

[0041] Meanwhile, an elastic sealing skirt 121 is provided. When the positioning protrusion 311 abuts against the second buckle 32, the elastic sealing skirt 121 is squeezed and deformed. When the positioning protrusion 311 aligns with the positioning groove 321, the elastic sealing skirt 121 rebounds, causing the positioning protrusion 311 to be engaged in the positioning groove 321. Under the action of the elastic sealing skirt 121, the positioning protrusion 311 will not slide out of the positioning groove 321, thereby ensuring the firmness of the connection between the bottle body 22 assembly 2 and the nipple assembly 1. At the same time, the skirt edge 123 of the rebounded elastic sealing skirt 121 abuts against the inside of the top opening of the second connecting part 21, thereby achieving a seal between the elastic sealing skirt 121 and the second connecting part 21.

[0042] like Figure 2 and Figure 3 As shown, in some embodiments, in order to ensure that the bottle body 22 assembly 2 and the nipple assembly 1 can move relative to each other in the direction of the lower side wall when they are connected, after the nipple assembly 1 is placed on the upper side of the bottle body 22 assembly 2, there is a certain gap (initial gap) between the top of the second connecting part 21 and the bottom of the annular groove 122. Then, the nipple assembly 1 or the bottle body 22 assembly 2 is rotated. At this time, due to the external force of the hand, the initial gap will decrease until the positioning protrusion 311 abuts against the side of the second buckle 32.

[0043] As rotation continues, because the sides of the positioning protrusion 311 and the second latch 32 are smooth arc surfaces, during rotation, the positioning protrusion 311 and the second latch 32 (the first connecting part 11 and the second connecting part 21) move towards each other in the axial direction, causing the distance between the second connecting part 21 and the bottom of the annular groove 122 to gradually decrease until the positioning protrusion 311 completely abuts against the lower side wall of the second latch 32 (and does not slide into the positioning groove 321) (as shown). Figure 4 and Figure 5 During this process, the second connecting part 21 gradually moves toward the bottom of the annular groove 122, and the second connecting part 21 squeezes the elastic sealing skirt 121, so that the elastic sealing skirt 121 is deformed and in a squeezed state. At this time, the distance between the second connecting part 21 and the bottom of the annular groove 122 is the smallest (minimum distance), and the top of the second connecting part 21 abuts against the bottom of the annular groove 122 or is provided with a certain distance.

[0044] As rotation continues, the positioning protrusion 311 slides into the outer position of the positioning groove 321 (e.g., Figure 6 and Figure 7 ,at this time Figure 6 and Figure 7 The diagram shows a schematic state. In actual rotation, the positioning protrusion 311 will not align with the positioning groove 321 before sliding into the groove. The positioning protrusion 311 will gradually and slowly slide into the positioning groove 321. At this time, because the positioning protrusion 311 can move axially between sliding into the positioning groove 321, and the elastic sealing skirt 121 is under compression, the elastic sealing skirt 121 rebounds, causing the positioning protrusion 311 to engage in the positioning groove 321, thereby completing the engagement and fixation between the positioning protrusion 311 and the positioning groove 321. Figure 8 and Figure 9 At this time, without external force intervention, the elastic sealing skirt 121 can make the positioning protrusion 311 engage with the positioning groove 321, and the positioning protrusion 311 will not move out of the positioning groove 321, thus ensuring a firm connection between the first connecting part 11 and the second connecting part 21. When the positioning protrusion 311 is engaged with the positioning groove 321, the elastic sealing skirt 121 rebounds and abuts against the second connecting part 21 to form a seal. After rebounding, the elastic sealing skirt 121 abuts against the second connecting part 21 to form a seal. After the elastic sealing skirt 121 rebounds, the second connecting part 21 and the first connecting part 11 move backwards, thus increasing the distance between the top of the second connecting part 21 and the bottom of the annular groove 122 to form an axial gap (connection state gap).

[0045] In the prior art, if sealing is achieved through threaded connection and the use of a sealing ring, the sealing ring is squeezed between two structures with a certain degree of hardness. Since the pressure of the bottle body on the sealing ring is always in the same position, the sealing ring will inevitably deform after long-term use, and the thickness at the contact point will decrease. However, since a threaded connection is used, the relative position between the bottle body 22 and the bottle cap can be adjusted, thus achieving a seal. In this application, since a snap-fit ​​structure 3 is used to connect the bottle body 22 component 2 and the nipple component 1 (first connecting part 11 and second connecting part 21), the relative position of the two cannot be adjusted after connection. If a sealing ring structure is used directly to achieve a seal, the contact point will also deform after long-term use, thus affecting the seal.

[0046] In this embodiment, an elastic sealing skirt 121 is used, which is annular in shape. A skirt edge 123 is provided on the side near the annular groove 122. After the elastic sealing skirt 121 rebounds, it can achieve a seal with the second connecting part 21 through the skirt. At this time, the seal is not achieved by squeezing the elastic sealing skirt 121 from both sides, but by the elasticity of the elastic sealing skirt 121 after deformation and recovery to its initial state, so that the skirt edge 123 of the elastic sealing skirt 121 is pressed tightly against the inside of the opening of the second connecting part 21, thereby achieving a seal. Therefore, after long-term use, since the compression of the elastic sealing skirt 121 is small (the compression of the elastic sealing skirt 121 is mainly in the snap-fit ​​process), the deformation of the elastic sealing skirt 121 is relatively small during long-term use, thus ensuring the sealing effect under long-term use.

[0047] In some embodiments, to facilitate axial movement between the first connecting portion 11 and the second connecting portion 21, a stepped portion 211 is provided on the lower side of the second connecting portion 21. The bottom of the first connecting portion 11 and the stepped portion 211 of the second connecting portion 21 form a contact surface. When the positioning protrusion 311 is engaged with the positioning groove 321, the gap between the bottom of the first connecting portion 11 and the stepped portion 211 of the second connecting portion 21 is an axial gap. At this time, there is an axial gap between the bottom of the first connecting portion 11 and the stepped portion 211 of the second connecting portion 21. Thus, during the engagement of the first connecting portion 11 and the second connecting portion 21, there is a gap for movement at the outer sides of the first connecting portion 11 and the second connecting portion 21, thereby ensuring that the first connecting portion 11 and the second connecting portion 21 can move normally when axial movement occurs.

[0048] In some embodiments, after the elastic sealing skirt 121 rebounds, in order to achieve a better sealing effect with the second connecting portion 21, an inclined sealing edge 212 is provided on the inner side of the top of the second connecting portion 21. In the sealed state, when the elastic sealing skirt 121 rebounds, the skirt edge 123 of the elastic sealing skirt 121 abuts against the inclined sealing edge 212 to form a sealing state. The inclined sealing edge 212 is located on the inner side of the top of the second connecting portion 21. After the inclined sealing edge 212 is provided, the skirt edge 123 of the elastic sealing skirt 121 abuts against the inclined sealing edge 212 when it rebounds, exerting a downward force on the second connecting member, thereby improving the sealing effect between the skirt edge 123 of the elastic sealing skirt 121 and the second connecting skirt.

[0049] In some embodiments, after the elastic sealing skirt 121 is deformed by compression, in order to be more stable when recovering from deformation, an arc-shaped connecting portion 124 is provided at the connection between the skirt edge 123 and the elastic sealing skirt 121, and the arc-shaped connecting portion 124 faces the annular groove 122. At this time, the skirt 123 and the elastic sealing skirt 121 are provided with an arc-shaped connecting part 124 on the side near the annular groove 122. The arc-shaped connecting part 124 extends from the upper side of the skirt 123 to the bottom of the annular groove 122. At this time, after the elastic sealing skirt 121 is compressed, the skirt 123 is squeezed, so the skirt 123 deforms upward. After the positioning protrusion 311 and the positioning groove 321 are engaged, the elastic sealing skirt 121 rebounds. Due to the arc-shaped connecting part 124, the force exerted on the second connecting part 21 after the elastic sealing skirt 121 rebounds is greater. After rebounding, the skirt 123 of the elastic sealing skirt 121 abuts against the inner side of the second connector (the position of the inclined sealing edge 212). The side of the skirt 123 near the annular groove 122 abuts against the second connector. In this way, the elastic sealing skirt 121 deforms towards the lower side wall, and the skirt 123 of the elastic sealing skirt 121 fits more tightly with the second connector, thus achieving a better sealing effect.

[0050] Meanwhile, after setting the arc-shaped connecting part 124, even if the elastic sealing skirt 121 and the skirt edge 123 deform toward the lower side wall, compared with directly using a right angle connection, the skirt edge 123 can be prevented from cracking at the connection position (right angle position), thereby extending the service life of the elastic sealing skirt 121.

[0051] In some embodiments, the nipple portion 12 is fixed to the first connecting portion 11 to form an integral structure through secondary molding. Specifically, the first connecting portion 11 has an annular protrusion 111, and the nipple portion 12 has a corresponding annular connecting groove 125. The lower side of the annular connecting groove 125 wraps around the lower side of the annular protrusion 111 and extends at least partially to the position of the annular groove 122. By fixing the nipple portion 12 and the first connecting portion 11 through secondary molding, the nipple assembly 1 has high integrity, and during use, the sealing effect will not be affected by excessive deformation of the elastic sealing skirt 121.

[0052] In some embodiments, in order to achieve a snap-fit ​​connection through the first snap-fit ​​31 and the second snap-fit ​​32, the first snap-fit ​​31 includes a first inclined portion 312, and the positioning protrusion 311 is a protrusion 313 provided on the upper side wall of the first inclined portion 312; the second snap-fit ​​32 includes a second inclined portion 322, and the positioning groove 321 is a groove 323 with an opening facing downward provided on the lower side wall of the second inclined portion 322, and a limiting portion 324 is provided vertically downward at the lower end of the second inclined portion 322; when the positioning protrusion 311 is engaged in the positioning groove 321, the end of the first inclined portion 312 abuts against the limiting portion 324.

[0053] At this time, the inclination angles of the contact surfaces of the first inclined portion 312 and the second inclined portion 322 are the same. The protrusion 313 and the groove 323 are respectively located at the higher end of the first inclined portion 312 and the second inclined portion 322. At this time, the first inclined portion 312 and the second inclined portion 322 can be used for guidance, thereby ensuring that the groove 323 and the protrusion 313 can be smoothly engaged during the sliding process. Meanwhile, the limiting portion 324 is located at the lower end of the second inclined portion 322. After the positioning groove 321 engages with the positioning protrusion 311, the end of the first inclined portion 312 (the lower end) abuts against the limiting portion 324, thereby restricting the second inclined portion 322 from continuing to rotate with the first inclined portion 312. In this way, the engagement and fixation of the first buckle 31 and the second buckle 32 can be completed.

[0054] In some embodiments, in order to adjust the external force required to twist the bottle body 22 assembly 2 and the nipple assembly 1 (first connecting part 11 and second connecting part 21), a plurality of inclined guide parts 13 are provided on the outer side of the first connecting part 11. The inclined guide parts 13 are spaced apart from the first buckle 31, and the total number of the first buckle 31 and the inclined guide parts 13 corresponds to the number of the second buckle 32. At this time, the inclined guide part 13 does not have a positioning protrusion 311 structure and is in an inclined state. The inclined guide part 13 and the first buckle 31 are distributed at intervals. The total number of the first buckle 31 and the inclined guide part 13 corresponds to the number of the second buckle 32. It can be understood that some of the first buckles 31 do not have a positioning protrusion 311. In this way, when the bottle body 22 component 2 and the nipple component 1 (first connecting part 11 and second connecting part 21) are connected, it is not necessary to specifically align the bottle body 22 component 2 and the nipple component 1. They can be at any angle. When the bottle body 22 component 2 / nipple component 1 is twisted, the first buckle 31 and the second buckle 32 engage to achieve connection and fixation. The second buckle 32 and the inclined guide part 13 only serve as guides. This can reduce the external force required for the first buckle 31 and the second buckle 32 to engage and disengage, thus making it convenient to use.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A baby bottle with a quick-opening and closing structure, comprising a bottle body assembly and a nipple assembly fixedly connected by a snap-fit ​​structure, characterized in that: The nipple assembly includes a nipple part and a first connecting part, which are integral structures. The first connecting part is a ring structure located at the bottom end of the nipple part. An elastic sealing skirt extending into the first connecting part is also provided at the bottom opening of the nipple part. The elastic sealing skirt is spaced apart from the inner wall of the first connecting part, and an annular groove is formed between them. The elastic sealing skirt has a skirt edge that protrudes outward toward the inner wall of the first connecting part. The bottle body assembly includes a bottle body and a second connecting part integrally formed at the opening of the bottle body. The second connecting part has an annular structure with a diameter smaller than that of the first connecting part. The snap-fit ​​structure includes a first snap-fit ​​and a second snap-fit ​​respectively disposed on the inner wall of the first connecting part and the outer wall of the second connecting part. The first connecting part is sleeved on the outside of the second connecting part and is snapped and fixed by the first snap-fit ​​and the second snap-fit. The first and second buckles are respectively provided with positioning protrusions and positioning grooves for axial engagement. During the engagement and positioning process of the bottle body assembly and the nipple assembly through the positioning protrusions and positioning grooves, the second connecting part rotates relative to each other in the state of axially pressing the elastic sealing skirt. After the positioning protrusion is placed in the positioning groove, the positioning protrusion abuts against the positioning groove under the rebound force of the elastic sealing skirt.

2. The baby bottle with a quick-opening and closing structure according to claim 1, characterized in that, The positioning protrusion is located on the upper side wall of the first buckle, and the positioning groove is located on the lower side wall of the second buckle.

3. The baby bottle with a quick-opening and closing structure according to claim 1, characterized in that, The positioning protrusion is located on the lower side wall of the second buckle, and the positioning groove is located on the upper side wall of the first buckle.

4. A baby bottle with a quick-opening and closing structure according to claim 1, characterized in that, The second connecting part has an inclined sealing edge inside the top opening. When the positioning protrusion is in the sealing state in the positioning groove, the elastic sealing skirt rebounds and the edge of the elastic sealing skirt abuts against the inclined sealing edge to form a sealing state.

5. A baby bottle with a quick-opening and closing structure according to claim 4, characterized in that, The skirt edge and the elastic sealing skirt are connected by an arc-shaped connecting part, which faces the annular groove.

6. A baby bottle with a quick-opening and closing structure according to any one of claims 1 to 5, characterized in that, The nipple part is fixed to the first connecting part to form an integral structure through secondary molding.

7. A baby bottle with a quick-opening and closing structure according to claim 6, characterized in that, The first connecting part is provided with an annular protrusion, and the nipple part is provided with a corresponding annular connecting groove. The lower side of the annular connecting groove wraps around the lower side of the annular protrusion and extends at least partly to the position of the annular groove.

8. A baby bottle with a quick-opening and closing structure according to claim 2, characterized in that, The first buckle includes a first inclined portion, and the positioning protrusion is a protrusion provided on the upper side wall of the first inclined portion; The second buckle includes a second inclined portion, the positioning groove is a groove with an opening facing downward on the lower side wall of the second inclined portion, and a limiting portion is provided vertically downward at the lower end of the end of the second inclined portion; When the positioning protrusion is engaged in the positioning groove, the end of the first inclined part abuts against the limiting part.

9. A baby bottle with a quick-opening and closing structure according to claim 8, characterized in that, The outer side of the first connecting part is provided with a plurality of inclined guide parts, the inclined guide parts are spaced apart from the first buckle, and the total number of the first buckle and the inclined guide parts corresponds to the number of the second buckle.

10. A baby bottle with a quick-opening and closing structure according to claim 1, characterized in that, The second connecting part has a stepped part on its lower side. When the positioning protrusion is engaged with the positioning groove, the gap between the bottom of the first connecting part and the stepped part of the second connecting part is the axial gap.

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