A vacuum-pumping anti-overflow structure
By designing an anti-overflow structure in the breast pump, using a baffle plate and a buffer chamber to prevent milk from being drawn out, the problem of milk overflow in existing breast pumps is solved, achieving more efficient milk storage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CITY RONGFENG MEDICAL EQUIP CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-21
AI Technical Summary
In existing breast pumps, milk can easily be drawn out with the airflow during the vacuuming process, leading to overflow problems.
A vacuum anti-overflow structure was designed, including a shell, a silicone bottom cover and a baffle plate. The shell has a cavity and an air hole. The baffle plate and the silicone bottom cover are sealed to form a buffer cavity. The air hole is connected to an air pump. The baffle plate and the buffer cavity prevent milk from being sucked out.
This effectively prevents milk from being drawn out along with the airflow during the vacuuming process, thus preventing overflow and improving the effectiveness of the breast pump.
Smart Images
Figure CN224523695U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of breast pump technology, and in particular relates to a vacuum anti-overflow structure. Background Technology
[0002] A breast pump is a tool used to express breast milk that has accumulated in the mammary glands. It is generally suitable when the baby cannot suckle directly, or when the mother is separated from the baby but still wishes to breastfeed. Breast pumps typically use an electric or manual negative pressure system to apply negative pressure directly or indirectly to a breast shield or milk storage container that fits against the breast, so that the milk can be drawn into the storage container or other storage space for storage.
[0003] Chinese invention patent document CN103212123B discloses a breast pump with a matching breast milk reservoir, including a breast adapter, preferably coupled to a funnel-shaped inlet of the reservoir, wherein breast milk is expressed into or drips into the reservoir when the breast is inserted into the breast adapter. A valve can be inserted between the dropper and the reservoir. Milk is retained in the reservoir until the device is removed and emptied. In the illustrated embodiment, the reservoir is in the form of a cup, and the breast adapter is in the form of a funnel inside a lid, the adapter being detachably coupled to the open end of the reservoir cup. The reservoir can also be shaped like a woman's breast, thereby providing a more natural appearance when the device is placed in a woman's bra. In another embodiment, a valve assembly concentrically mounted on a second end of the breast adapter is also included. The valve assembly alternately opens and closes the communication between the breast adapter and the reservoir. The valve assembly includes a valve body, a valve cap concentrically mounted on the valve body, and a valve attached to the valve cap. The valve assembly also includes a baffle structure integral with the inner wall of the valve cover and substantially extending into the overflow chamber, thereby preventing milk from overflowing into the pump and associated vacuum lines before suction is released from the pump's negative pressure cycle. A handle located on the top outer surface of the reservoir is attached to the pump via a vacuum hose. The vacuum hose is attached to the handle at the top so that the pump will not draw breast milk into the pump's components.
[0004] The technical solution disclosed in the aforementioned patent documents utilizes a pump and a vacuum tube directly connected to an internal volume, creating negative pressure within the internal volume to achieve milk suction. The suctioned milk is stored within the internal volume. However, because the pump is directly connected to the internal volume via a vacuum tube, there is a problem that during the vacuuming process, some milk within the internal volume will be drawn out by the airflow. Utility Model Content
[0005] The purpose of this invention is to provide a vacuum anti-overflow structure, which solves the problem that breast pumps in the prior art have milk drawn out along with the airflow during operation.
[0006] To achieve the above objectives, this utility model provides a vacuum anti-overflow structure, including a housing with a cavity inside. The housing includes a first sidewall and a second sidewall. The upper end of the second sidewall has an air hole, and a baffle plate is arranged around the air hole on the inner side of the second sidewall. The two ends of the baffle plate extend to the outer edge of the housing and form a flow channel with the upper outer edge of the housing. The baffle plate fits against the inner side of the first sidewall to form a buffer cavity.
[0007] Furthermore, the vent also extends into the buffer cavity via an extension tube.
[0008] Furthermore, a connecting portion is provided on the outer side of the second sidewall for connecting an air extraction device; the connecting portion extends to the upper end of the second sidewall, and an air passage is provided inside the connecting portion, which communicates with the air hole.
[0009] Furthermore, the housing includes an outer shell and a silicone bottom cover, the silicone bottom cover forming the first sidewall and covering the outer shell, and the baffle plate sealingly fitting with the silicone bottom cover to form the buffer cavity.
[0010] Furthermore, the outer shell is disposed in a mounting position extending into the cavity, the mounting position including a bottom wall forming the second sidewall, the inner side of the bottom wall and the inner side of the silicone bottom cover forming an airflow channel.
[0011] Furthermore, the two ends of the baffle plate extend outward from the buffer cavity with blocking portions.
[0012] The above-mentioned one or more technical solutions in the vacuum anti-overflow structure provided in this embodiment of the utility model have at least the following technical effects:
[0013] This anti-overflow structure connects to an air pump via an air vent. The air pump expels air from the cavity, creating negative pressure and drawing liquid into the cavity. During the venting process, when liquid flows upward with the airflow, a baffle prevents it from continuing to flow towards the air vent. Even if some liquid passes through the baffle and enters the flow channel, this portion accumulates in the buffer chamber, effectively preventing liquid from being sucked out. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1A cross-sectional view of a breast pump provided in an embodiment of this utility model.
[0016] Figure 2 for Figure 1 A magnified view of a portion of the image.
[0017] Figure 3 The diagram shows the structure of the breast pump housing provided in the embodiment of this utility model, which has a mounting position.
[0018] Figure 4 This is a structural diagram of the inner side of the breast pump housing provided in an embodiment of the present invention. Detailed Implementation
[0019] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.
[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0023] In one embodiment of the vacuum anti-overflow structure of this utility model, the anti-overflow structure is configured such that liquid enters a cavity through vacuuming and is stored in the cavity.
[0024] This embodiment features a vacuum anti-overflow structure installed in the breast pump. Specifically, refer to... Figures 1 to 4 A breast pump includes a housing 100, a silicone bottom cover 200, and an air pump 300. The housing 100 has an open-bottomed cavity, which is covered by the silicone bottom cover 200, forming a cavity 101. The silicone bottom cover 200 has a flared structure, extending into the cavity 101 to form a channel 102. A flange is located at the opening of the silicone bottom cover 200, forming a first sidewall 210. The housing 100 has a second sidewall 110. An air hole 111 is located at the upper end of the second sidewall 110, connecting to the air pump 300. A baffle plate 120 is disposed around the air hole 111 on the inner side of the second sidewall 110. Both ends of the baffle plate 120 extend towards the outer edge of the housing 100, forming a flow channel 103 with the upper outer edge of the housing 100. The baffle plate 120 fits against the inner side of the silicone bottom cover 200 to form a buffer cavity 121. In this embodiment of the breast pump, the air vent 111 is connected to the suction pump 300. The suction pump 300 discharges air from the cavity 101, creating a negative pressure inside the cavity 101. This negative pressure acts on the breast, drawing milk through the channel 102 into the cavity 101. During the pumping process, when milk flows upward with the airflow, the baffle plate 120 prevents the milk from continuing to flow towards the air vent 111. Even if some milk passes through the baffle plate 120 and enters the flow channel 103, this portion of milk will flow along the inner wall of the baffle plate 120 into the buffer chamber 121 and accumulate there, preventing it from being drawn out through the air vent 111. Therefore, the problem of liquid being drawn out can be effectively avoided.
[0025] Furthermore, referring to Figure 1 , Figure 2 and Figure 4 Furthermore, an extension tube 112 extends from the air vent 111 into the buffer chamber 121. The extension tube 112 is suspended within the buffer chamber 121, which further prevents milk from entering the extension tube 112.
[0026] Furthermore, refer to Figure 2 and Figure 3 The outer side of the second sidewall 110 is also provided with a connecting portion 113, which is connected to the suction pump 300. The connecting portion 113 extends towards the upper end of the second sidewall 110, and an air passage 114 is provided inside the connecting portion 113, which connects to the air hole 111. The connecting portion 113 can increase the path of the air passage 114, and some of the steam formed by the milk can be adsorbed on the air passage wall, effectively preventing it from being drawn out.
[0027] Furthermore, refer to Figure 1and Figure 3 The outer shell 100 is disposed in a mounting position 104 extending into the cavity 101. The mounting position 104 includes a bottom wall 105 forming a second sidewall 110. The inner side of the bottom wall 105 and the inner side of the silicone bottom cover 200 form an airflow channel 106. In this embodiment, the inner side of the bottom wall 105 and the inner side of the silicone bottom cover 200 form a wide and flat airflow channel 106, which can further block the flow of milk towards the air hole 111.
[0028] Furthermore, refer to Figure 4 The baffle plate 120 has blocking portions 122 extending outward from both ends of the buffer cavity 121. When milk flows into the buffer cavity 121 under the action of airflow and along the outer wall of the baffle plate 120, the blocking portions 122 can further block the milk from flowing into the buffer cavity 121, thereby increasing the blocking effect.
[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A vacuum anti-overflow structure, characterized in that, The device includes a housing with a cavity inside. The housing includes a first sidewall and a second sidewall. The upper end of the second sidewall has an air hole. A baffle plate is arranged around the air hole on the inner side of the second sidewall. Both ends of the baffle plate extend to the outer edge of the housing and form a flow channel with the upper outer edge of the housing. The baffle plate fits against the inner side of the first sidewall to form a buffer cavity.
2. The vacuum anti-overflow structure according to claim 1, characterized in that: The vent also extends into the buffer cavity via an extension tube; the extension tube is suspended in the buffer cavity.
3. The vacuum anti-overflow structure according to claim 1, characterized in that: The outer side of the second sidewall is also provided with a connecting part for connecting an air extraction device; the connecting part extends to the upper end of the second sidewall, and an air passage is provided inside the connecting part, which communicates with the air hole.
4. The vacuum anti-overflow structure according to any one of claims 1 to 3, characterized in that: The housing includes an outer shell and a silicone bottom cover. The silicone bottom cover forms the first sidewall and covers the outer shell. The baffle plate is sealed and fitted with the silicone bottom cover to form the buffer cavity.
5. The vacuum anti-overflow structure according to claim 4, characterized in that: The outer casing is disposed in a mounting position extending into the cavity, the mounting position including a bottom wall forming the second sidewall, the inner side of the bottom wall and the inner side of the silicone bottom cover forming an airflow channel.
6. The vacuum anti-overflow structure according to any one of claims 1 to 5, characterized in that: The two ends of the baffle plate extend outward from the buffer cavity with blocking portions.