Breast pump capable of realizing one-way air leakage

Abstract

The breast pump comprises a three-way connecting piece, the first connecting end of the three-way connecting piece is connected with a breast cover, the second connecting end of the three-way connecting piece is connected with a sealing assembly, the sealing assembly is connected with a negative pressure air pipe, and the third connecting end of the three-way connecting piece is connected with a container used for containing emulsion. The sealing assembly comprises a diaphragm piece connected with the second connecting end and arranged in the three-way connecting piece and an end cover arranged at the top end of the diaphragm piece, an isolation cavity is jointly formed between an inner cavity of the diaphragm piece and the end cover, an air gap channel communicated with the outside is formed between the inner side walls of the end cover, and a circle of diaphragm flaps are arranged on the diaphragm piece. The isolation cavity is isolated from the air gap channel through the membrane flaps, under the action of positive pressure in the isolation cavity, the membrane flaps are separated from the inner top wall of the end cover, and the isolation cavity is communicated with the air gap channel. According to the scheme, the problem that in the prior art, redundant gas is conveyed into the diaphragm piece through a piston, and consequently the internal pressure of the diaphragm piece is too large can be solved.

Description

Technical Field

[0001] The utility model relates to the field of breast pumps, in particular to a breast pump capable of unidirectional air release. Background Art

[0002] Existing electric breast pumps usually use a diaphragm pump and a solenoid valve to control the air pressure in the breast pump to complete the suction of breast milk. For example, the utility model patent with authorization announcement number CN214762529U provides a breast pump with negative pressure controlled by a solenoid valve. However, the solenoid valve has a large working noise, and the diaphragm pump cannot blow air in the opposite direction to quickly inflate and reset the diaphragm, resulting in relatively low suction force that the diaphragm pump can generate, low milk suction efficiency, and poor comfort.

[0003] In order to solve the above problems, existing improved methods, such as the invention patent with publication number CN114569820A, propose to use a breast pump with a piston and a diaphragm to replace the original diaphragm pump plus solenoid valve assembly. Since the internal space of the piston is large, it has a large adjustment margin relative to the diaphragm in the three-way connector, so it is possible to design a variety of modes with different spectral characteristics (such as milk suction / lactation / massage modes), which can greatly improve the milk suction efficiency and comfort of the breast pump. However, it is precisely because the piston end has a large suction margin and adjustment margin relative to the three-way diaphragm end that after the suction is completed, when the piston inflates the diaphragm to reset the diaphragm, the piston may transport excess gas into the diaphragm, resulting in a positive pressure inside the diaphragm. When the pressure is too high, the diaphragm may expand and enter the bra, affecting the user experience or causing the milk in the bra to leak out, and may cause damage to the diaphragm. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides a breast pump capable of unidirectional air release.

[0005] The utility model is realized by the following technical solutions:

[0006] A breast pump capable of unidirectional air release comprises a three-way connector, wherein the three-way connector is provided with three internally communicating connecting ends, wherein a breast shield is connected to the first connecting end, a sealing assembly is connected to the second connecting end, the sealing assembly is connected to a negative pressure air pipe, and a container for containing lotion is connected to the third connecting end, the sealing assembly comprises a diaphragm connected to the second connecting end and placed inside the three-way connector, and an end cap arranged at the top end of the diaphragm, the diaphragm having an opening at the top, and forming an isolation cavity between the inner cavity of the diaphragm and the end cap, the inner side wall of the end cap is connected to the outer side wall of the second connecting end, and an air gap channel communicating with the outside is formed therebetween, the diaphragm is provided with a circle of membrane flaps along the edge of the top opening thereof, the membrane flaps isolate the isolation cavity from the air gap channel and contact the inner top wall of the end cap, when subjected to the positive pressure inside the isolation cavity, the membrane flaps separate from the inner top wall of the end cap, and the isolation cavity communicates with the air gap channel.

[0007] Preferably, a limiting structure is formed on the outer side wall of the second connecting end, and the limiting structure includes a circle of limiting steps arranged along the outer side wall of the second connecting end, and buckles arranged at intervals on the top of the limiting steps, and a snap-fitting portion is formed at the bottom of the inner side wall of the end cover, and the snap-fitting portion is embedded between the limiting step and the buckle.

[0008] Preferably, a plurality of clips are arranged at equal angles on the outer wall of the second connecting end, and a clip portion having the same number and corresponding position as the clips is arranged at the bottom of the inner wall of the end cover, and the outlet of the air gap channel is formed at the interval between two adjacent clips.

[0009] Preferably, a circle of limiting portions is provided on the outer periphery of the opening at the top of the diaphragm member, and the limiting portions include a first limiting portion extending along the circumference of the diaphragm member and a second limiting portion extending vertically downward from the outer periphery of the first limiting portion, and a limiting groove is formed between the second limiting portion and the outer side wall of the diaphragm member, and the port of the second connection end extends into the limiting groove.

[0010] Preferably, the bottom end of the membrane flap is integrally arranged with the inner circle of the first limiting portion, and the angle between the membrane flap and the first limiting portion is an acute angle.

[0011] Preferably, the thickness of the membrane flap gradually becomes thinner from its bottom end to its top end.

[0012] Preferably, a socket for connecting a negative pressure air pipe is coaxially arranged on the inner top wall of the end cover, and the socket extends into the inner cavity of the diaphragm member. The air outlet of the socket is located inside the inner cavity of the diaphragm member, and the inlet is located on the upper surface of the end cover.

[0013] Preferably, a trachea joint is provided in the socket, a gas passage is formed inside the trachea joint, the negative pressure air pipe is connected to the top end of the trachea joint, and the negative pressure air path inside the negative pressure air pipe is communicated with the gas passage inside the trachea joint.

[0014] Preferably, a circle of limiting members is also provided on the inner top wall of the end cover, the limiting members are coaxial with the plug socket and are provided between the plug socket and the inner side wall of the end cover, and the membrane flap is provided between the limiting members and the inner side wall of the end cover.

[0015] The beneficial effects of the technical solution of the utility model are mainly reflected in:

[0016] 1. The isolation cavity and the air gap channel are isolated or communicated with each other through the contact or separation of the membrane flap arranged on the top of the diaphragm and the inner top wall of the end cover, wherein the membrane flap can be movably arranged on the diaphragm, and when subjected to the internal pressure of the isolation cavity, the membrane flap is automatically separated from the inner top wall of the end cover, and the isolation cavity is communicated with the air gap channel. When the isolation cavity returns to atmospheric pressure or negative pressure, the membrane flap is reset and contacts with the inner top wall of the end cover, and the isolation cavity is isolated from the air gap channel, thereby realizing one-way air release in the isolation cavity, which can solve the problem in the prior art that the piston transports excess gas into the diaphragm, resulting in excessive pressure inside the diaphragm.

[0017] 2. The thickness of the diaphragm gradually becomes thinner from the bottom to the top, thereby improving the flexibility of the opening and closing of the diaphragm, ensuring that when the diaphragm is affected by positive pressure, the thinner position at the top moves first, and forms an opening between the top of the diaphragm and the inner top wall of the end cover, avoiding excessive pressure in the diaphragm due to the slow reaction of the diaphragm and failure of air leakage. On the other hand, since the thickness of the diaphragm gradually becomes thinner from the bottom to the top, the diaphragm can automatically adjust its opening size according to the internal pressure of the diaphragm, and ensure that the thicker bottom part always forms a shield between the isolation cavity and the air gap channel to avoid excessive air leakage.

[0018] 3. The number and position of the snap-fitting parts at the bottom of the end cover and the snap-fitting parts on the outer side wall of the second connecting end are the same, and the two are arranged at equal angles, and multiple air gap channel outlets are provided at the intervals of the snap-fitting structures, thereby ensuring the air release efficiency.

[0019] 4. The plug-in socket extends into the inner cavity of the diaphragm component to ensure that its air outlet is lower than the position of the membrane flap and is located inside the inner cavity of the diaphragm component, thereby preventing the membrane flap from opening due to the impact force of the gas when blowing air into the isolation cavity, and ensuring the sealing performance in the isolation cavity when the positive pressure is not reached in the diaphragm component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of a breast pump capable of one-way deflation (the negative pressure device is omitted);

[0021] Figure 2 It is a cross-sectional view of a breast pump capable of unidirectional deflation (the negative pressure device is omitted);

[0022] Figure 3 yes Figure 2 A magnified view of part B;

[0023] Figure 4 is a front view of the diaphragm member;

[0024] Figure 5 It is a cross-sectional view along AA' in 4. DETAILED DESCRIPTION

[0025] In order to make the purpose, advantages and features of the utility model more clearly and in detail, the following preferred embodiments are illustrated and explained through non-limiting descriptions. This embodiment is only a typical example of the application of the technical solution of the utility model. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the utility model.

[0026] At the same time, it is stated that in the description of the scheme, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "front", "back", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0027] In addition, the terms "first" and "second" in this solution are only used for descriptive purposes and cannot be understood as indicating or implying the order of importance, or implicitly indicating the number of technical features shown. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In this utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The utility model discloses a breast pump capable of one-way deflation, such as Figure 1-3 As shown, it includes a three-way connector 1, and three internally connected connecting ends are arranged on the three-way connector 1, wherein a bra 2 is connected to the first connecting end 101, and a sealing component is connected to the second connecting end 102, and the sealing component is connected to a negative pressure air circuit, and the negative pressure air circuit is transported by a negative pressure air pipe 8, wherein one end of the negative pressure air pipe 8 is connected to the sealing component, and the other end is connected to a negative pressure device (not shown in the figure), and a container 3 for containing lotion is connected to the third connecting end 103, wherein the first connecting end 101 and the second connecting end 102 are located on the top of the third connecting end 103, and the three are internally connected to form the three-way connector 1 as a whole.

[0029] like Figure 2-5 As shown, the sealing assembly includes a diaphragm member 4 connected to the second connection end 102 and placed inside the three-way connector 1, and an end cap 5 arranged at the top of the diaphragm member 4, the top of the diaphragm member 4 is open, and an isolation cavity 7 is formed between the inner cavity of the diaphragm member 4 and the end cap 5, the inner side wall of the end cap 5 is connected to the outer side wall of the second connection end 102, and an air gap channel 6 connected to the outside is formed between the two, and the diaphragm member 4 is provided with a circle of membrane flaps 401 along the edge of its top opening, and the membrane flaps 401 isolate the isolation cavity 7 from the air gap channel 6 and are connected to the inner top of the end cap 5. Wall contact, since the diaphragm 4 is usually made of a soft material with elasticity, when subjected to the positive pressure inside the isolation chamber 7, the membrane flap 401 is pressed and swung, and is separated from the inner top wall of the end cover 5, forming an opening at the top edge of the isolation chamber 7, so that the isolation chamber 7 is connected with the air gap channel 6, thereby ensuring that the excess air inside the isolation chamber 7 is discharged along the air gap channel 6 to avoid the expansion of the diaphragm 4; after the pressure relief is completed, when the isolation chamber 7 returns to atmospheric pressure or negative pressure is achieved by suction through the negative pressure air path, the membrane flap 401 automatically resets and blocks between the isolation chamber 7 and the air gap channel 6 to ensure isolation between the two.

[0030] like Figure 3 , Figure 5 As shown, in some embodiments, a limiting structure is formed on the outer side wall of the second connecting end 102, and the limiting structure includes a circle of limiting steps 1021 arranged along the outer side wall of the second connecting end 102, and buckles 1022 arranged at intervals on the top of the limiting steps 1021, and a clamping portion 501 is formed at the bottom of the inner side wall of the end cover 5, and the clamping portion 501 is embedded between the limiting step 1021 and the buckle 1022 to achieve the fixation of the end cover 5 and the second connecting end 102; in a preferred embodiment, a plurality of buckles 1022 are arranged at equal angles on the outer side wall of the second connecting end 102, and the end cover 5 is fixed to the second connecting end 102. The bottom of the inner wall of the cover 5 is provided with snap-fitting parts 501 whose number is the same as that of the snap-fitting parts 1022 and whose positions correspond to those of the snap-fitting parts 1022. Each of the snap-fitting parts 501 is embedded between the snap-fitting part 1022 and the limiting step 1021 corresponding thereto. Since an air gap channel 6 is formed between the inner wall of the end cover 5 and the outer wall of the second connecting end 102, an outlet of the air gap channel 6 is formed at the interval between two adjacent snap-fitting parts 1022 or two adjacent snap-fitting parts 501, thereby improving the air discharge efficiency of the air gap channel 6, avoiding slow air discharge due to the air gap channel 6 being too narrow or the outlet being blocked, and thus avoiding excessive air pressure inside the diaphragm 4.

[0031] like Figure 3 , Figure 5As shown, in some embodiments, a circle of limiting portions is provided on the outer periphery of the opening at the top of the diaphragm member 4, and the limiting portions include a first limiting portion 402 extending circumferentially along the diaphragm member 4 and a second limiting portion 403 extending vertically downward from the outer periphery of the first limiting portion 402, a limiting groove 404 is formed between the second limiting portion 403 and the outer side wall of the diaphragm member 4, and the port 1023 located at the top end of the second connecting end 102 extends into the limiting groove 404, wherein the inner diameter of the end cover 5 should be larger than the outer diameter of the second limiting portion 403 to ensure ventilation between the two.

[0032] like Figure 3 , Figure 5 As shown, in some embodiments, the bottom end of the membrane flap 401 is integrally arranged with the inner circle of the first limiting portion 402, and the angle between the membrane flap 401 and the first limiting portion 402 is always an acute angle, thereby avoiding the membrane flap 401 from folding too much and causing isolation failure, or the membrane flap 401 is difficult to reset. Specifically, when the membrane flap 401 is subjected to the positive pressure inside the isolation chamber 7, the angle between the membrane flap 401 and the first limiting portion 402 becomes smaller, so that the membrane flap 401 leaves the inner top wall of the end cover 5. When the atmospheric pressure is restored or negative pressure is generated inside the isolation chamber 7, the membrane flap 401 rebounds and resets, and the angle between the flap and the first limiting portion 402 returns to the original initial angle, thereby realizing one-way air release of the isolation chamber. In actual applications, in order to ensure that the angle between the membrane flap 401 and the first limiting portion 402 is not too large, the length of the membrane flap 401 can be appropriately extended, which is not elaborated here.

[0033] like Figure 5 As shown, in a preferred embodiment, the thickness of the membrane flap 401 gradually becomes thinner from its bottom end to the top end, thereby improving the flexibility of the top end of the membrane flap 401, so that the top end can be quickly opened when subjected to the positive pressure inside the isolation cavity 7. In addition, the thickness of the bottom of the membrane flap 401 is relatively thick, which prevents the bottom of the membrane flap 401 from opening too much and causing excessive air leakage or difficulty in resetting the membrane flap 401, thereby ensuring that the user's comfort is improved without affecting the original function.

[0034] like Figure 3-Figure 3As shown, in some embodiments, a socket 502 for connecting the negative pressure air pipe 8 is coaxially arranged on the inner top wall of the end cover 5, and the socket 502 extends into the inner cavity of the diaphragm 4, and the air outlet 503 of the socket 502 is located inside the inner cavity of the diaphragm 4, so that the air is pumped and discharged in the inner cavity of the diaphragm 4, avoiding the air outlet 503 being too high, especially avoiding the air outlet 503 being located near the membrane flap 401 to affect the work of the membrane flap 401, and preventing it from being too high when taking in air. The diaphragm 4 is opened too early, resulting in failure of inflation and reset of the diaphragm 4 or reduced reset efficiency. The inlet of the socket 502 is located on the upper surface of the end cover 5. An air pipe connector 9 is provided in the socket 502. The air pipe connector 9 is inserted from the inlet at the top of the socket 502. A gas passage is formed inside the air pipe connector 9. The negative pressure air pipe 8 is connected to the top of the air pipe connector 9, and the negative pressure air path inside the negative pressure air pipe 8 is communicated with the gas passage inside the air pipe connector 9.

[0035] like Figure 3 As shown, in a preferred embodiment, a circle of limiting members 504 is further provided on the inner top wall of the end cover 5, the limiting member 504 is coaxial with the plug socket 502, and is provided between the plug socket 502 and the inner side wall of the end cover 5, and the membrane flap 401 is provided between the limiting member 504 and the inner side wall of the end cover 5, and then the limiting member 504 is used to further limit the membrane flap 401, thereby avoiding isolation failure caused by excessive swinging space of the membrane flap 401.

[0036] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A breast pump capable of unidirectional deflation, comprising a three-way connector, wherein the three-way connector is provided with three internally communicating connection ends, wherein: A bra is connected to the first connecting end, a sealing assembly is connected to the second connecting end, the sealing assembly is connected to the negative pressure air pipe, and a container for containing lotion is connected to the third connecting end, characterized in that: the sealing assembly includes a diaphragm member connected to the second connecting end and placed inside the three-way connector, and an end cover arranged at the top end of the diaphragm member, the top of the diaphragm member is open, and an isolation cavity is formed between the inner cavity of the diaphragm member and the end cover, the inner side wall of the end cover is connected to the outer side wall of the second connecting end, and an air gap channel connected to the outside is formed between the two, the diaphragm member is provided with a circle of membrane flaps along the edge of its top opening, the membrane flaps isolate the isolation cavity from the air gap channel and contact with the inner top wall of the end cover, when subjected to the positive pressure inside the isolation cavity, the membrane flaps are separated from the inner top wall of the end cover, and the isolation cavity is connected to the air gap channel.

2. The breast pump capable of one-way deflation according to claim 1, characterized in that: A limiting structure is formed on the outer wall of the second connecting end, and the limiting structure includes a circle of limiting steps arranged along the outer wall of the second connecting end, and buckles arranged at intervals on the top of the limiting steps. A clamping portion is formed at the bottom of the inner wall of the end cover, and the clamping portion is embedded between the limiting step and the buckle.

3. The breast pump capable of one-way deflation according to claim 2, characterized in that: A plurality of buckles are arranged at equal angles on the outer wall of the second connecting end, and a clamping portion having the same number and corresponding position as the buckles is arranged at the bottom of the inner wall of the end cover, and the outlet of the air gap channel is formed at the interval between two adjacent buckles.

4. The breast pump capable of one-way deflation according to claim 2, characterized in that: A circle of limiting parts is arranged on the outer periphery of the opening at the top of the diaphragm member, and the limiting parts include a first limiting part extending along the circumference of the diaphragm member and a second limiting part extending vertically downward from the outer periphery of the first limiting part, a limiting groove is formed between the second limiting part and the outer side wall of the diaphragm member, and the port of the second connection end extends into the limiting groove.

5. The breast pump capable of one-way deflation according to claim 4, characterized in that: The bottom end of the membrane flap is integrally arranged with the inner circle of the first limiting portion, and the angle between the membrane flap and the first limiting portion is an acute angle.

6. The breast pump capable of one-way deflation according to claim 1, characterized in that: The thickness of the membrane petal gradually becomes thinner from the bottom end to the top end.

7. The breast pump capable of one-way deflation according to claim 1, characterized in that: A socket for connecting a negative pressure air pipe is coaxially arranged on the inner top wall of the end cover, and the socket extends into the inner cavity of the diaphragm. The air outlet of the socket is located inside the inner cavity of the diaphragm, and the inlet is located on the upper surface of the end cover.

8. The breast pump capable of one-way deflation according to claim 7, characterized in that: A trachea joint is arranged in the socket, a gas passage is formed inside the trachea joint, the negative pressure trachea is connected to the top end of the trachea joint, and the negative pressure gas path inside the negative pressure trachea is communicated with the gas passage inside the trachea joint.

9. The breast pump capable of one-way deflation according to claim 7, characterized in that: A circle of limiting members is also arranged on the inner top wall of the end cover. The limiting members are coaxial with the plug socket and are arranged between the plug socket and the inner side wall of the end cover. The membrane flap is arranged between the limiting members and the inner side wall of the end cover.

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