Breast pump

Abstract

The utility model relates to the technical field of breast pumps, in particular to a breast pump which comprises a milk receiving bowl, a horn cover arranged at a bowl opening of the milk receiving bowl and an elastic diaphragm, the horn cover extends towards the interior of the milk receiving bowl to form a circulation part, a three-way end is formed at the tail end of the circulation part and comprises a first port, a second port and a third port, and the first port is communicated with the second port. The first port is communicated with the circulation part, the second port is matched with the elastic diaphragm, and the third port is communicated with a milk receiving container and is provided with a check valve; the elastic diaphragm is integrally connected to the milk receiving bowl, a vacuumizing cavity is correspondingly formed in the elastic diaphragm, and an air hole used for being communicated with an air pump is formed in the cavity wall of the vacuumizing cavity. The breast pump effectively solves the technical problems that an existing breast pump is complex in internal structure and high in production and installation cost, and milk can be sucked into an air pump.

Description

Technical Field

[0001] This application relates to the technical field of breast pumps, and particularly to a breast pump. Background Art

[0002] A breast pump refers to a tool used to extract breast milk accumulated in the mammary glands. It is generally used when the baby is unable to directly suck breast milk or the mother is inconvenient to directly breastfeed.

[0003] In existing breast pumps, their internal structures are complex and there are many components. For example, in the existing breast pumps on the market, the elastic diaphragm used to generate negative pressure suction inside is detachably connected to the breast pump body, resulting in additional costs during the production and installation processes. The separate setting between the elastic diaphragm and the breast pump body will also cause breast milk to be sucked into the air pump through the gap between the elastic diaphragm and the breast pump body during use, leading to equipment damage. Utility Model Content

[0004] This application provides a breast pump to at least solve the technical problems in the related art that the internal structure of the breast pump is complex, the production and installation costs are relatively high, and breast milk will be sucked into the air pump.

[0005] To achieve the above object, this application provides a breast pump, including a milk collection bowl, a breast shield provided at the bowl mouth of the milk collection bowl, and an elastic diaphragm. The breast shield extends towards the inside of the milk collection bowl to form a flow-through portion, and a tee end is formed at the end of the flow-through portion. The tee end includes a first port, a second port, and a third port. The first port is communicated with the flow-through portion, the second port is cooperated with the elastic diaphragm, and the third port is communicated with a milk collection container and is provided with a check valve. The elastic diaphragm is integrally connected to the milk collection bowl, and a vacuum chamber is correspondingly formed on the elastic diaphragm. An air hole for communicating with an air pump is provided on the chamber wall of the vacuum chamber.

[0006] In some embodiments, the elastic diaphragm divides the milk collection bowl into two independent spaces. Among them, a milk collection container is formed on the side of the elastic diaphragm facing the second port, and a vacuum chamber is formed on the side of the elastic diaphragm facing away from the second port.

[0007] In some embodiments, a through hole communicating with the outside is provided on the milk collection bowl corresponding to the vacuum chamber side of the elastic diaphragm. The elastic diaphragm covers the through hole, and a detachable rear cover cooperating with the through hole is provided outside the milk collection bowl. A vacuum chamber is formed between the elastic diaphragm and the rear cover, and the air hole is provided on the rear cover.

[0008] In some embodiments, the diameter of the through hole is less than or equal to the elastic diaphragm.

[0009] In some of these embodiments, an edge for facilitating the fixing of the elastic diaphragm is provided at the edge of the through hole, and the elastic diaphragm is wrapped around the edge.

[0010] In some of these embodiments, the elastic diaphragm bulges toward the second port and fits tightly with the second port.

[0011] In some of these embodiments, a cover body extending in the direction of the elastic diaphragm is provided along the circumferential direction of the second port, and the cover body matches the shape of the elastic diaphragm and covers the elastic diaphragm.

[0012] In some of these embodiments, an abutting portion that cooperates with and abuts against the cover body is provided along the circumferential direction of the outer edge of the elastic diaphragm, and a stepped structure is formed between the main body of the elastic diaphragm and the abutting portion.

[0013] In some of these embodiments, the check valve is a flexible opening and closing piece provided at the third port, and the opening and closing piece is fixedly provided at the third port in an openable and closable manner, or the opening and closing piece is integrally provided with the elastic diaphragm and is located at the third port.

[0014] In some of these embodiments, the elastic diaphragm and the milk receiving bowl are integrally formed by a two-shot injection molding process.

[0015] Based on the above, the beneficial effects of the technical solution of the present application compared with the prior art are as follows:

[0016] 1. A tee end located inside the milk receiving bowl is formed at the end of the horn cover. Compared with the existing setting where a tee part is connected to the horn cover, the internal structure of the breast pump in the present application is integrated, thereby streamlining the internal structure of the breast pump and reducing the installation and production costs.

[0017] 2. An elastic diaphragm integrated with the milk receiving bowl is formed on the inner wall of the milk receiving bowl through a two-shot injection molding process, effectively reducing the installation cost.

[0018] 3. A cover body that cooperates with the elastic diaphragm is formed at the second port of the tee end, effectively ensuring the sealing performance between the elastic diaphragm and the second port.

[0019] 4. The integral setting of the elastic diaphragm and the milk receiving bowl makes there be no gap between the elastic diaphragm and the milk receiving bowl, thereby effectively preventing milk from being sucked back into the air pump through the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0021] Figure 1It is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 It is a sectional view of the overall structure of an embodiment of the present application;

[0023] Figure 3 It is an exploded view of an embodiment of the present application;

[0024] Figure 4 It is a sectional view of the milk receiving bowl of an embodiment of the present application;

[0025] Figure 5 It is a sectional view of the milk receiving bowl of an embodiment of the present application;

[0026] Figure 6 It is a schematic diagram of the rear structure of an embodiment of the present application;

[0027] Figure 7 It is a schematic diagram of the elastic diaphragm and the opening and closing piece of another embodiment of the present application.

[0028] Explanation of reference numerals: milk receiving bowl 1; rear cover 1.1; air hole 1.2; buckle groove 1.3; through hole 1.4; edge 1.5; horn cover 2; flow-through part 2.1; buckle 3; elastic diaphragm 4; abutting part 4.1; tee end 5; second port 5.1; third port 5.2; cover body 5.3; opening and closing piece 6. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without making creative efforts fall within the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood as the content disclosed in the present application being insufficient.

[0030] Referring to "embodiment" in the present application means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.

[0031] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the ordinary meanings understood by those with ordinary skills in the technical field to which this application belongs. The words such as "a", "an", "one", "the" and the like involved in this application do not indicate a quantity limitation and may represent a singular or plural number. The terms "include", "comprise", "have" and any variations thereof involved in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or units, but may further include unlisted steps or units, or may further include other steps or units inherent to these processes, methods, products or devices. The similar words such as "connect", "be connected", "couple" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application means greater than or equal to two. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may represent: A exists alone, A and B exist simultaneously, and B exists alone. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects and do not represent a specific order of the objects.

[0032] This application provides a breast pump, which includes a milk collection bowl, a breast shield provided at the bowl opening of the milk collection bowl, and an elastic diaphragm. The breast shield extends towards the inside of the milk collection bowl to form a circulation part, and a three-way end is formed at the end of the circulation part. The three-way end includes a first port, a second port and a third port. The first port is communicated with the circulation part, the second port is matched with the elastic diaphragm, and the third port is communicated with a milk collection container and is provided with a check valve. The elastic diaphragm is integrally connected to the milk collection bowl, and a vacuum pumping cavity is correspondingly formed in the elastic diaphragm. An air hole for communicating with an air pump is provided on the cavity wall of the vacuum pumping cavity.

[0033] As shown in the embodiments Figures 1 to 6 A breast pump includes a milk collection bowl 1 and a breast shield 2 that covers and wraps the opening of the milk collection bowl 1. The breast shield 2 is snap-connected to the milk collection bowl 1, and a snap 3 for snap connection is provided between the breast shield 2 and the milk collection bowl 1. The breast shield 2 extends towards the inside of the milk collection bowl 1 to form a tubular circulation part 2.1, and the breast milk sucked out flows into the inside of the milk collection bowl 1 through the circulation part 2.1.

[0034] Furthermore, the milk receiving bowl 1 is provided with a through hole 1.4 connecting the inside and outside of the milk receiving bowl. The through hole 1.4 is covered with an elastic diaphragm 4 located inside the milk receiving bowl 1 and integrally provided with the milk receiving bowl 1. Specifically, the elastic diaphragm 4 integrally formed with the milk receiving bowl 1 is made by a secondary injection molding process on the basis of the milk receiving bowl 1. A rear cover 1.1 is provided outside the milk receiving bowl 1 to cooperate with the through hole 1.4 and to block the through hole 1.4. The rear cover 1.1 can be removed from the through hole 1.4. The end of the circulation part 2.1 located inside the milk receiving bowl 1 is formed with a three-way end 5 integrally formed with it. The three-way end 5 includes a first port, a second port 5.1 and a third port 5.2. The first port is communicated with the circulation part 2.1, the third port 5.2 is communicated with the milk receiving container and is provided with a check valve, and the second port 5.1 is tightly fitted with the elastic diaphragm 4.

[0035] Specifically, the elastic membrane 4 protrudes toward the second port 5.1 in the milk receiving bowl 1 and divides the milk receiving bowl 1 into two independent spaces. The milk receiving bowl 1 forms the above-mentioned milk receiving container on the side where the elastic membrane 4 protrudes toward the second port 5.1, and the elastic membrane 4 cooperates with the back cover 1.1 on the side away from the second port 5.1 to form a vacuum chamber, and the cavity wall of the vacuum chamber, i.e., the back cover 1.1, is provided with an air hole 1.2 for connecting the air pump and the vacuum chamber.

[0036] Specifically, the elastic diaphragm 4 can cover the second port 5.1 in a tightly fitting manner, thereby ensuring the sealing performance of the second port 5.1. The second port 5.1 is provided with a cover body 5.3 extending and spreading toward the elastic diaphragm 4 along the circumferential direction. The cover body 5.3 matches the shape of the elastic diaphragm 4 and is provided on the elastic diaphragm 4. The outer edge of the elastic diaphragm 4 is provided with an abutment portion 4.1 along the circumferential direction to abut against the cover body 5.3. The tight fit between the cover body 5.3 and the abutment portion 4.1 can further enhance the sealing performance between the second port 5.1 and the elastic diaphragm 4, and prevent liquid leakage, gas leakage, etc.

[0037] Furthermore, a stepped structure is formed between the main body of the elastic diaphragm 4 and the abutting portion 4.1. The main body of the elastic diaphragm 4 protrudes toward the second port 5.1 relative to the abutting portion 4.1 and is accommodated in the cover body 5.3.

[0038] Specifically, in order to achieve a better installation and air suction effect, the diameter of the through hole 1.4 is less than or equal to the elastic diaphragm 4 (in the embodiment of the present application, the diameter of the through hole 1.4 is equal to the elastic diaphragm 4), and the edge of the through hole 1.4 is provided with a rim 1.5 extending toward the center of the through hole 1.4 or toward the inside of the milk receiving bowl 1 to facilitate fixing the secondary injection-molded elastic diaphragm 4, and the secondary injection-molded elastic diaphragm 4 is covered on the rim 1.5. In this embodiment, the rim 1.5 is extended toward the inside of the milk receiving bowl 1.

[0039] Furthermore, a buckle groove 1.3 is provided on the outside of the milk receiving bowl 1 at the edge of the rear cover 1.1 for facilitating the removal of the rear cover 1.1.

[0040] Further, the check valve is a flexible opening and closing piece 6 arranged at the third port 5.2. The opening and closing piece 6 is at least partially fixed at the third port 5.2, keeping the third port 5.2 in a closed state under normal conditions and opening the third port 5.2 under the action of an external force. When milk flows through, the opening and closing piece 6 is pushed open to allow the milk to flow out, and then due to the flexible material of the opening and closing piece 6, it automatically resets to close the third port 5.2.

[0041] Further, the necessary main body of this application is only composed of two components, namely the milk receiving bowl 1 and the horn cover 2 that cooperates with the milk receiving bowl 1. Other necessary structures such as the elastic diaphragm 4 and the three-way end 5 are integrally and integratedly arranged on the above-mentioned components.

[0042] Further, the opening and closing piece 6 also has another implementation manner, such as Figure 7 As shown, the opening and closing piece 6 is integrally arranged with the elastic diaphragm 4, and the opening and closing piece 6 extends to the third port 5.2, keeping it in a closed state with respect to the third port under normal conditions and bouncing open when subjected to an external force. This design can further improve the internal integration of the device and reduce the number of parts.

[0043] Further, for the above-mentioned integral arrangements of the opening and closing piece 6 and the elastic diaphragm 4, the elastic diaphragm 4 and the milk receiving bowl 1, the opening and closing piece 6 and the third port 5.2, etc., in addition to the secondary injection molding method, processes such as ultrasonic welding and pasting can also be used.

[0044] During use, start the air pump. The air pump evacuates the vacuum chamber formed between the elastic diaphragm 4 and the rear cover 1.1 through the air hole 1.2. Due to the stepped design of the elastic diaphragm 4, it is more convenient to contract and rebound under the action of the air pump. Under the action of the air pump, the elastic diaphragm 4 undergoes elastic deformation in the direction opposite to its convex direction, thereby generating a negative pressure at the second port 5.1 of the three-way end 5 that closely cooperates with it. This negative pressure is transmitted through the flow-through part 2.1 to the chest that closely fits the horn cover 2 to suck out breast milk. The sucked breast milk flows through the flow-through part 2.1 to the third port 5.2 of the three-way end 5, and then flows into the milk receiving bowl 1. The check valve at the third port 5.2 can effectively prevent the breast milk from flowing back. The integration of the elastic diaphragm 4 and the milk receiving bowl 1 can effectively prevent the breast milk from being sucked into the air pump through the gap.

[0045] Those skilled in the art should understand that the technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope described in this specification.

[0046] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A breast pump, comprising a milk collection bowl, a breast shield disposed at the rim of the milk collection bowl, and an elastic diaphragm. The breast shield extends towards the interior of the milk collection bowl to form a flow-through portion, and a tee end is formed at the end of the flow-through portion. The tee end includes a first port, a second port, and a third port. The first port is in communication with the flow-through portion, the second port is engaged with the elastic diaphragm, and the third port is in communication with a milk collection container and is provided with a check valve. It is characterized in that: The elastic diaphragm is integrally connected to the milk receiving bowl. A vacuum pumping chamber is correspondingly formed in the elastic diaphragm, and air holes for communicating with an air pump are provided on the chamber wall of the vacuum pumping chamber.

2. The breast pump according to claim 1, wherein: The elastic diaphragm divides the milk receiving bowl into two independent spaces. Among them, the side of the elastic diaphragm facing the second port forms the milk receiving container, and the side of the elastic diaphragm facing away from the second port forms the vacuum pumping chamber.

3. The breast pump according to claim 2, characterized in that: A through hole communicating with the outside is provided on the milk receiving bowl on the side of the vacuum pumping chamber corresponding to the elastic diaphragm. The elastic diaphragm covers the through hole. A detachable rear cover matching the through hole is provided outside the milk receiving bowl. The vacuum pumping chamber is formed between the elastic diaphragm and the rear cover, and the air hole is provided on the rear cover.

4. The breast pump according to claim 3, characterized in that: The diameter of the through hole is less than or equal to the elastic diaphragm.

5. The breast pump according to claim 4, wherein: An edge for facilitating the fixing of the elastic diaphragm is provided at the edge of the through hole, and the elastic diaphragm covers the edge.

6. The breast pump according to claim 1, wherein: The elastic diaphragm bulges towards the second port and is in close fit with the second port.

7. The breast pump according to claim 6, wherein: A cover body extending towards the elastic diaphragm is provided along the circumference of the second port. The cover body matches the shape of the elastic diaphragm and covers the elastic diaphragm.

8. The breast pump according to claim 7, wherein: An abutting portion cooperating with the cover body is provided along the circumference of the outer edge of the elastic diaphragm. A stepped structure is formed between the main body of the elastic diaphragm and the abutting portion.

9. A breast pump according to any one of claims 1 to 8, characterized in that: The check valve is a flexible opening and closing piece provided at the third port. The opening and closing piece is fixedly provided at the third port in an openable and closable manner, or the opening and closing piece is integrally provided with the elastic diaphragm and is located at the third port.

10. A breast pump according to any one of claims 1 to 8, characterized in that: The elastic diaphragm and the milk receiving bowl are integrally formed by a two-shot injection molding process.

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