Exhaust structure of bra type breast pump
By placing the vent high in the breast pump and designing it separately from the milk outlet, the problem of milk spillage after use is solved, resulting in a compact structural design and a better user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN YOUYI ELECTRIC APPLIANCE IND CO LTD
- Filing Date
- 2025-01-17
- Publication Date
- 2026-05-26
AI Technical Summary
Existing bra-style breast pumps tend to leak milk after use, affecting the user experience, and the product design is not compact enough.
Design a venting structure for a bra-style breast pump, with a micro vent located high in the milk collection chamber and designed separately from the milk outlet. When in use, the milk outlet is sealed with a sealing plug to prevent milk from spilling when removed, while also allowing the breast pump to be used as a baby bottle.
It achieves effective venting and spill prevention during use and removal, has a compact structure, reduces volume by more than 20%, and improves user experience.
Smart Images

Figure CN224269830U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of breast pump technology, and more specifically to an exhaust structure for a bra-type breast pump. Background Technology
[0002] A breast pump is a maternal and infant device that simulates a baby's sucking to express and store breast milk. Currently, there are two types of breast pumps in the existing technology. The first type is a breast pump with a bottle, such as the breast pump pad and breast pump described in patent number CN202122324169.0. The breast pump includes a breast pump pad (i.e., a breast shield), a three-way connector, a negative pressure device, a bottle, and a main unit. The main unit is equipped with an air pump assembly, and the three-way connector is equipped with an exhaust port to expel air from the bottle when storing milk. When pouring out breast milk, the bottle and the three-way connector can be separated.
[0003] For bra-style breast pumps, the vent and milk outlet are usually located at the top of the product (the upper part of the product when in use) to allow users to expel air during use and pour out milk afterward. During use, as milk is drawn into the bottle, the air inside the bottle must be expelled. Since the product is used vertically with the vent and milk outlet designed at the top, another problem arises: when the bra-style breast pump is removed after use, milk may spill out and splash on the baby or pregnant woman. Utility Model Content
[0004] In view of this, the present invention provides an exhaust structure for a bra-type breast pump.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an exhaust structure for a breast pump, the breast pump comprising: a main unit and a breast shield, the main unit having a milk collection chamber, the milk collection chamber being connected to a micro exhaust port, the micro exhaust port being arranged away from the breast shield, and when the breast pump is in standing operation, the micro exhaust port being located at a high position in the milk collection chamber; the milk collection chamber being connected to a milk outlet, and a sealing plug being provided corresponding to the milk outlet.
[0006] In a preferred embodiment of this invention, when the breast pump is in a standing position, the milk outlet is located at a high position.
[0007] As a preferred embodiment of this utility model, the milk outlet is located on the side close to the breast shield or the milk outlet is located on the same side as the breast shield.
[0008] As a preferred embodiment of this utility model, the main unit includes: a first body and a second body assembled together, the first body having a first housing, and the second body having a second housing; the breast suction shield is assembled to the first housing; and the micro exhaust hole is disposed on the first housing.
[0009] As a preferred embodiment of the present invention, the first housing is provided with a stepped surface, the second housing has a support surface corresponding to the stepped surface, and the micro exhaust hole is provided on the stepped surface.
[0010] In a preferred embodiment of this invention, a gap is formed between the stepped surface and the supporting surface.
[0011] As a preferred embodiment of this utility model, the micro exhaust hole is located on the side of the first housing away from the breast shield.
[0012] As a preferred embodiment of this utility model, the first housing is assembled with the breast suction shield, and after assembly, the breast suction shield seals the milk collection chamber.
[0013] As a preferred embodiment of this utility model, the breast shield and the first housing form a milk outlet channel and a milk outlet.
[0014] In a preferred embodiment of this invention, the breast shield and the sealing plug are integrally formed.
[0015] As can be seen from the above technical solution, compared with the prior art, the present invention has the following beneficial technical effects:
[0016] 1. This new type of breast pump separates venting and milk pouring. It can vent milk during use and prevent milk spillage when removed. After use, the user can pour out the milk by opening the sealing plug of the milk outlet; at the same time, the breast pump can also be used temporarily as a baby bottle without milk spillage. It can be placed in the refrigerator, laid flat, or placed upright on the table, further facilitating user use and improving the user experience.
[0017] 2. The overall structure of this utility model is more compact, and the product volume is reduced by more than 20% compared with similar products. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 This is a cross-sectional view of a breast pump.
[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 This is an exploded cross-sectional view of a breast pump.
[0022] Figure 4 for Figure 3 Enlarged view of point B in the middle.
[0023] Explanation of reference numerals in the attached figures
[0024] Main unit 100; milk collection chamber 101; miniature vent 102; milk outlet 103; milk outlet channel 104; first body 110; first housing 111; stepped surface 1111; second body 120; second housing 121; support surface 1211; side 1112; breast shield 200; sealing plug 210; air pump assembly 300; suction silicone bowl 410; one-way valve 420. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.
[0026] A ventilation structure for a bra-style breast pump, such as Figure 1-4 As shown, the breast pump includes: a main unit 100 and a breast shield 200. The main unit 100 is configured with a milk collection chamber 101. The milk collection chamber 101 is connected to a micro vent 102. The micro vent 102 is arranged away from the breast shield 200, and when the breast pump is working upright, the micro vent 102 is located at a high position in the milk collection chamber 101. The milk collection chamber 101 is connected to a milk outlet 103, and a sealing plug 210 is provided corresponding to the milk outlet 103.
[0027] Figure 1 The breast pump is a standing type. When using it, the user's breast should be on the left side of the breast pump, and the breast pump should be pressed firmly against the user's breast from right to left. At this time, the micro vent 102 is located on the right side of the milk collection chamber 101 and at a high position in the milk collection chamber 101. At this time, the sealing plug 210 blocks the milk outlet 103.
[0028] During the operation of the breast pump, the air in the milk collection chamber 101 is discharged through the micro exhaust port 102;
[0029] After the breast pump has finished working, remove the breast pump from left to right along with the bra (not shown in the picture), or remove the breast pump from the bra from bottom to top. During the removal process, the micro vent 102 is always in a high position and the milk outlet 103 is always in a blocked state, so the breast milk will not leak out.
[0030] Alternatively, if the user is in a supine position, the breast pump should be positioned along... Figure 1 When used, rotate 90° counterclockwise, that is, with the opening of the breast shield 200 facing downwards. Similarly, the micro vent 102 is located at the high position of the milk collection chamber 101.
[0031] Breast pumps should be used along Figure 1 It can be used by rotating 90° counterclockwise, and is defined as a horizontal working mode.
[0032] At this time, the sealing plug 210 blocks the milk outlet 103.
[0033] During the operation of the breast pump, the air in the milk collection chamber 101 is discharged through the micro exhaust port 102;
[0034] After the breast pump has finished working, remove the breast pump from right to left, or remove the breast pump and bra from bottom to top. During the removal process, the micro vent 102 is always in a high position and the milk outlet 103 is always blocked, so breast milk will not leak out.
[0035] It is worth noting that the bra mentioned here refers to the underwear worn by female users. The bra can be ordinary underwear worn by users, or it can be underwear specially made to match the breast pump.
[0036] As can be seen from the above, when the user uses the breast pump in a standing or supine position, the sealing plug 210 blocks the milk outlet 103, and the micro vent 102 is located at the high position of the milk collection chamber 101, which can effectively prevent milk leakage while venting.
[0037] Will Figure 1 After rotating the breast pump 90° counterclockwise, it can be used as a milk storage accessory to temporarily store breast milk and place it horizontally on the table.
[0038] To further clarify, the micro vent 102 is located at a high position in the emulsion collection chamber 101. This is a relative height and does not necessarily mean the highest point of the emulsion collection chamber 101. It can be a position higher than the rated emulsion collection capacity of the emulsion collection chamber or a position close to the highest point of the emulsion collection chamber 101.
[0039] In one implementation, such as Figure 1 When the breast pump is in standing mode, the milk outlet 103 is in a high position.
[0040] Furthermore, continue as Figure 1 As shown, the milk outlet 103 is located on the side close to the breast shield 200 or the milk outlet 103 is located on the same side as the breast shield 200.
[0041] Preferably, the milk outlet 103 is located on the same side as the breast shield 200.
[0042] In one implementation, such as Figure 1 and Figure 3As shown, the host 100 includes: a first body 110 and a second body 120 assembled together, the first body 110 having a first housing 111, and the second body 120 having a second housing 121; the breast shield 200 is assembled to the first housing 111; and the micro exhaust port 102 is disposed on the first housing 111.
[0043] Furthermore, the first housing 111 is provided with a stepped surface 1111, the second housing 121 has a support surface 1211 corresponding to the stepped surface 1111, the micro exhaust hole 102 is provided on the stepped surface 1111, and a gap is formed between the stepped surface 1111 and the support surface 1211.
[0044] like Figure 2 and Figure 4 As shown, air is exhausted through the micro exhaust port 102, which discharges air into the gap between the step surface 1111 and the support surface 1211, and then discharges it through the gap between the first housing 111 and the second housing 121.
[0045] Here, the micro vent 102 is provided on the stepped surface 1111. With the shielding of the support surface 1211, the micro vent 102 can be prevented from being blocked by dust, particles and other substances in the air, thus avoiding contamination of breast milk.
[0046] Alternatively, the micro-vent 102 may also be located on the side of the first housing 111 away from the breast shield 200, i.e. Figure 1 The side 1112 of the first housing 111 is located on the side 1112 and is positioned at a high position. This method can ensure that the micro vent 102 is positioned at a high position regardless of whether the breast pump is standing or lying flat. However, the micro vent 102 is exposed and is at risk of being blocked.
[0047] As a preferred embodiment of the present invention, the first housing 111 is assembled with the breast suction shield 200, and after assembly, the breast suction shield 200 closes the milk collection chamber 101.
[0048] Furthermore, the breast shield 200 and the first housing 111 form a milk outlet channel 104 and a milk outlet 103.
[0049] Furthermore, the breast shield 200 and the sealing plug 210 are integrally formed to prevent the sealing plug 210 from being lost.
[0050] After the breast pump has finished working, remove the sealing plug 210 from the milk outlet 103, and then pour out the breast milk from the milk collection container 101.
[0051] After emptying, the breast shield 200 and the first housing 111 can be removed for easy cleaning of the milk collection chamber 101.
[0052] Furthermore, an air pump assembly 300 is installed inside the second body 120. The air pump assembly 300 uses a cyclical air intake and deflation to enable the breast shield 200 to simulate the sucking action of an infant to suck milk. The specific structure of the air pump assembly 300 will not be described in detail here.
[0053] Furthermore, the first body 110 is equipped with components such as a suction silicone bowl 410 and a one-way valve 420, which are used in conjunction with the air pump assembly 300 to realize the milk pumping function. The specific structure and principle of the suction silicone bowl 410 and the one-way valve 420 will not be described in detail here.
[0054] Furthermore, a control board and an electronic board should also be installed inside the second body 120. The control board should be equipped with a display screen and trigger buttons for controlling the operation of the breast pump; such as Figure 1 As shown, the control panel should be located on the top of the second body 120 so that the user can easily see the control panel when looking down after the breast pump is inserted into the bra, and it is also convenient for the user to operate.
[0055] Furthermore, it should be noted that, Figure 1 The position in the middle is the standing position for the breast pump, although... Figure 1 Rotating the orientation 180° also results in a standing position, but this is not the actual standing working position. Because after rotating 180°, the control panel faces downwards, making operation impossible for the user. Therefore, in this application, "standing" merely refers to... Figure 1 The directions shown do not include the directions after rotating 180°;
[0056] Optionally, a support foot can be provided at the bottom of the first housing 111 to facilitate the breast pump being placed upright.
[0057] Furthermore, it should be noted that, Figure 1 Rotating 90° counterclockwise enables horizontal operation.
[0058] This new breast pump separates venting and milk pouring, allowing for venting during use and preventing milk spillage when removed. After use, the user can pour out the milk by opening the overflow nozzle rubber stopper 210; it can also be used temporarily as a baby bottle without milk spillage, and can be stored in the refrigerator, laid flat, or placed upright on a table, further enhancing user convenience and improving the user experience.
[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An exhaust structure for a breast shield breast pump, the breast pump comprising: The main unit (100) and the breast pump (200) are characterized in that: the breast pump (100) is equipped with a milk collection chamber (101), and the milk collection chamber (101) is connected to a micro vent (102), the micro vent (102) is arranged away from the breast pump (200), and when the breast pump is working upright, the micro vent (102) is located at a high position in the milk collection chamber (101); the milk collection chamber (101) is connected to a milk outlet (103), and a sealing plug (210) is provided corresponding to the milk outlet (103).
2. The vent structure of a breast shield breast pump according to claim 1, wherein: When the breast pump is in standing position, the milk outlet (103) is in a high position.
3. The venting structure of a bra-type breast pump according to claim 2, characterized in that: The milk outlet (103) is located on the side close to the breast shield (200) or the milk outlet (103) is located on the same side as the breast shield (200).
4. The venting structure of a breast pump in the form of a bra according to any one of claims 1-3, characterized in that: The host (100) includes: a first body (110) and a second body (120) assembled together, the first body (110) having a first housing (111) and the second body (120) having a second housing (121); the breast shield (200) is assembled on the first housing (111); and the micro exhaust port (102) is disposed on the first housing (111).
5. The venting structure of a bra-type breast pump according to claim 4, characterized in that: The first housing (111) is provided with a stepped surface (1111), and the second housing (121) has a support surface (1211) corresponding to the stepped surface (1111). The micro exhaust hole (102) is provided on the stepped surface (1111).
6. The venting structure of a bra-type breast pump according to claim 5, characterized in that: A gap is formed between the stepped surface (1111) and the supporting surface (1211).
7. The venting structure of a bra-type breast pump according to claim 4, characterized in that: The micro vent (102) is located on the side of the first housing (111) away from the breast shield (200).
8. The venting structure of a bra-type breast pump according to claim 4, characterized in that: The first housing (111) is assembled with the breast shield (200), and after assembly, the breast shield (200) closes the milk collection chamber (101).
9. The venting structure of a bra-type breast pump according to claim 8, characterized in that: The breast shield (200) and the first housing (111) form a milk outlet channel (104) and a milk outlet (103).
10. The venting structure of a bra-type breast pump according to claim 8, characterized in that: The breast shield (200) and the sealing plug (210) are integrally formed.