Handheld breast pump

Abstract

The embodiment of the invention provides a handheld breast pump, and relates to the field of pregnant and baby products. The handheld breast pump comprises a flexible tee joint, a rear cover, a negative pressure source and a milk storage container. Wherein the flexible tee joint comprises a breast cover, a suction bowl and a guide cylinder, the suction bowl is connected to the breast cover, a front cavity is formed between the suction bowl and the breast, a rear cavity is formed between the suction bowl and the rear cover, the negative pressure source is communicated with the rear cavity through the rear cover, and the front cavity, the guide cylinder and the milk storage container are sequentially communicated from top to bottom; the breast cover, the suction bowl and the guide cylinder are integrally formed; the negative pressure source is used for driving the suction bowl to deform, so that the front cavity generates negative pressure to suck out the emulsion, and the emulsion moves towards the milk storage container under the action of gravity. According to the handheld breast pump, the breast cover, the suction bowl and the guide cylinder can be integrally formed into the flexible tee joint, the number of parts is reduced through structural optimization, and on the premise of facilitating breast pumping operation, disassembly is convenient, so that the convenience of cleaning operation is improved.

Description

Technical Field

[0001] The present invention relates to the field of maternal and infant products, and in particular to a handheld breast pump. Background Art

[0002] A breast pump is a tool used to suck out the milk accumulated in the mammary glands. The use of a breast pump is convenient for sucking out the milk in advance and storing it for the baby to consume, thereby avoiding waste caused by milk overflow.

[0003] Existing breast pumps are limited by the structure of components, which makes them inconvenient to disassemble and assemble, and inconvenient to clean. Summary of the invention

[0004] The present invention provides a handheld breast pump, which can optimize the component structure of the breast pump, thereby facilitating disassembly and assembly, thereby improving the convenience of cleaning operations.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a handheld breast pump, comprising:

[0007] Flexible tee, rear cover, negative pressure source and milk storage container;

[0008] The flexible three-way connection includes a breast shield, a suction bowl and a guide tube, the suction bowl is connected to the breast shield, the suction bowl is used to form a front cavity with the breast, a rear cavity is formed between the suction bowl and the rear cover, the negative pressure source is connected to the rear cavity through the rear cover, the front cavity, the guide tube and the milk storage container are connected in sequence from top to bottom, and the breast shield, the suction bowl and the guide tube are integrally formed;

[0009] The negative pressure source is used to drive the suction bowl to deform, so that the front cavity generates negative pressure to suck out the milk, and the milk moves toward the milk storage container under the action of gravity.

[0010] Optionally, the flexible tee further includes a one-way flow guide;

[0011] The one-way flow guide is integrally formed with the breast shield, the suction bowl and the flow guide tube;

[0012] Alternatively, the one-way air guide is detachably connected to the breast shield.

[0013] Optionally, the breast shield is provided with a liquid guiding groove, the liquid guiding groove is communicated with the one-way flow guide, and the inner diameter area of ​​the liquid guiding groove is larger than the inner diameter area of ​​the one-way flow guide.

[0014] Optionally, an exhaust hole is opened on the side wall of the guide tube, and the outlet of the exhaust hole is arranged higher than the inlet of the exhaust hole.

[0015] Optionally, the exhaust holes are arranged in a spiral along the circumference of the guide tube;

[0016] Alternatively, the exhaust hole is arranged in an arc shape;

[0017] Alternatively, the exhaust hole is arranged obliquely.

[0018] Optionally, a ventilation gap is formed between the bottom end of the rear cover and the side wall of the guide tube, and the outlet of the exhaust hole is located at the front side of the rear cover and is arranged higher than the ventilation gap.

[0019] Optionally, the inner wall of the breast shield defining the rear cavity is formed with a positioning slot, and the front side of the rear cover is formed with a positioning block, which is accommodated in the positioning slot and abuts against the suction bowl.

[0020] Optionally, the inner wall of the breast shield defining the rear cavity is formed with a sealing boss, and the sealing boss is used to cooperate with the rear cover;

[0021] And / or, the inner wall of the breast shield defining the rear cavity is formed with a positioning slot, and the positioning slot is used for matching with the rear cover.

[0022] Optionally, an outer wall of the rear end of the breast shield is formed with a mounting boss, and the mounting boss is used to cooperate with the rear cover.

[0023] Optionally, the middle region of the suction cup is arranged away from the front end of the breast shield relative to the edge region.

[0024] The beneficial effects of the handheld breast pump according to the embodiment of the present invention include, for example:

[0025] The handheld breast pump comprises a flexible tee, a rear cover, a negative pressure source and a milk storage container; wherein the flexible tee comprises a breast shield, a suction bowl and a guide tube, the suction bowl is connected to the breast shield, the suction bowl is used to form a front cavity with the breast, a rear cavity is formed between the suction bowl and the rear cover, the negative pressure source is connected to the rear cavity through the rear cover, the front cavity, the guide tube and the milk storage container are connected in sequence from top to bottom, the breast shield, the suction bowl and the guide tube are integrally formed; the negative pressure source is used to drive the suction bowl to deform so that the front cavity generates negative pressure to suck out the milk, and the milk moves toward the milk storage container under the action of gravity. The handheld breast pump can form the breast shield, the suction bowl and the guide tube into a flexible tee, reduce the number of parts through structural optimization, and facilitate disassembly while facilitating the milk suction operation, thereby improving the convenience of cleaning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the exploded structure of the handheld breast pump provided in an embodiment of the present invention;

[0028] Figure 2 It is a cross-sectional schematic diagram of a handheld breast pump provided in an embodiment of the present invention;

[0029] Figure 3 It is a cross-sectional schematic diagram of a flexible tee provided in an embodiment of the present invention;

[0030] Figure 4 It is a cross-sectional schematic diagram of a back cover provided in an embodiment of the present invention;

[0031] Figure 5 for Figure 2 A partial enlarged schematic diagram of the middle V;

[0032] Figure 6 A cross-sectional schematic diagram of a liner assembly provided in an embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the lining assembly provided in an embodiment of the present invention.

[0034] Icons: 1000-handheld breast pump; 100-flexible tee; 109-limiting groove; 110-breast shield; 111-front cavity; 112-back cavity; 113-liquid guide groove; 114-first sealing groove; 115-positioning card slot; 116-assembly boss; 117-limiting guide groove; 118-anti-slip boss; 119-second sealing boss; 120-suction bowl; 130-flow guide tube; 131-exhaust hole; 140-one-way flow guide; 200-back cover; 2 10-positioning block; 220-second sealing groove; 250-ventilation gap; 300-negative pressure source; 400-milk storage container; 500-lining assembly; 510-areola cover; 511-expansion section; 512-extension section; 5121-first sealing boss; 5122-limiting boss; 5123-accommodating groove; 513-anti-backflow buckle; 515-liquid outlet channel; 520-liquid isolation membrane; 523-ventilation hole; 530-lining frame; 531-limiting guide boss. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0040] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0041] Unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0043] Please refer to Figure 1 and Figure 2 The handheld breast pump 1000 provided in the embodiment of the present invention can solve the above problems, which will be described in detail below.

[0044] refer to Figure 1-Figure 3 The handheld breast pump 1000 comprises a flexible tee 100, a rear cover 200, a negative pressure source 300 and a milk storage container 400; wherein the flexible tee 100 comprises a breast shield 110, a suction cup 120 and a guide tube 130, the suction cup 120 is connected to the breast shield 110, the suction cup 120 is used to form a front cavity 111 with the breast, a rear cavity 112 is formed between the suction cup 120 and the rear cover 200, the negative pressure source 300 is connected to the rear cavity 112 through the rear cover 200, the front cavity 111, the guide tube 130 and the milk storage container 400 are connected in sequence from top to bottom, and the breast shield 110, the suction cup 120 and the guide tube 130 are integrally formed;

[0045] The negative pressure source 300 is used to drive the suction bowl 120 to deform, so that the front cavity 111 generates negative pressure to suck out the lotion, and the lotion moves toward the milk storage container 400 under the action of gravity.

[0046] During operation, the breast shield 110 is used to cover the breast, and the negative pressure source 300 provides negative pressure, so that negative pressure is formed in the back-front and front cavities 111 in turn, thereby sucking the milk out of the breast; after leaving the breast, the milk moves in the front cavity 111, and under the influence of its own gravity, it first falls to the guide tube 130, and then falls into the milk storage container 400 through the guide tube 130 for collection.

[0047] It is worth noting that the front end of the breast shield 110 is usually designed as a bell-mouth structure, which is used to cover the breast, and the front cavity 111 is the cavity on the side of the suction cup 120 close to the breast; the rear end of the breast shield 110 is an end opposite to the front end, and the rear cavity 112 is the cavity on the side of the suction cup 120 away from the breast. Similarly, the front end can be understood as an end relatively close to the breast, and the rear end can be understood as an end relatively far from the breast.

[0048] The handheld breast pump 1000 can form a breast shield 110, a suction cup 120 and a guide tube 130 into a flexible tee 100, and the number of parts is reduced through structural optimization. While facilitating the milk pumping operation, it is also easy to disassemble, thereby improving the convenience of cleaning operations.

[0049] In this embodiment, the flexible tee 100 is preferably made of silicone material, which makes it convenient to fold it to achieve all-round cleaning operations; in other embodiments of the present invention, the flexible tee 100 can also be made of other flexible materials, and there is no limitation on the specific material type.

[0050] Furthermore, in order to facilitate the disassembly and assembly of the milk storage container 400, the milk storage container 400 and the guide tube 130 can be detachably connected, and the specific connection methods include but are not limited to threaded connection, snap connection, and pin connection. At the same time, the top of the milk storage container 400 can be accommodated inside the guide tube 130, so that the guide tube 130 plays the role of a container cover, which helps to improve the antibacterial performance of the milk storage container 400.

[0051] In some alternative embodiments, please refer to Figure 1 In order to prevent the emulsion from flowing back after entering the guide tube 130 , the flexible tee 100 may further include a one-way guide 140 , which is disposed between the front cavity 111 and the guide tube 130 so that the front cavity 111 transports the emulsion to the guide tube 130 .

[0052] Furthermore, the one-way flow guide 140 can be integrally formed with the breast shield 110 , the suction cup 120 and the flow guide tube 130 , or the one-way flow guide 140 can be detachably connected to the breast shield 110 .

[0053] It is worth noting that the one-way flow guide 140 can be a one-way valve; in other embodiments of the present invention, the one-way flow guide 140 can also be a one-way membrane flap or other structures with one-way transmission capabilities, and there is no limitation on its specific structural type.

[0054] In some optional embodiments, reference Figure 2 and Figure 3 In order to prevent gas accumulation in the guide tube 130 and negatively affect the negative pressure in the front chamber 111, an exhaust hole 131 may be provided on the side wall of the guide tube 130 to facilitate timely discharge of gas in the guide tube 130.

[0055] Furthermore, in order to prevent the emulsion from leaking out while exhausting the gas, the outlet of the exhaust hole 131 can be set higher than the inlet of the exhaust hole 131. Even if some emulsion splashes to the mouth of the exhaust hole 131, it is difficult to overcome gravity and move toward the outlet. Furthermore, the inlet of the exhaust hole 131 can also be set higher than the inlet of the milk storage container 400, so that the gas in the milk storage container 400 can also be exhausted through the exhaust hole 131.

[0056] It is worth noting that in order to improve the anti-leakage effect, the exhaust hole 131 can be arranged along the circumferential spiral of the guide tube 130, so that when the emulsion enters the exhaust hole 131 and flows toward the outlet, the liquid has a sufficiently long flow path, which can further prevent the emulsion from leaking.

[0057] In addition, in order to facilitate processing, the exhaust hole 131 can be arranged in an arc shape or an inclined shape. When the exhaust hole 131 is in an arc shape, the arc bending direction can be upward or downward, which can effectively prevent the emulsion from leaking out from the outlet of the exhaust hole 131.

[0058] refer to Figure 2 and Figure 3 By providing a one-way flow guide 140 , the emulsion can be moved in one direction when passing through the flow guide cylinder 130 , so as to avoid the backflow phenomenon of the flow guide cylinder 130 .

[0059] In this embodiment, the one-way flow guide 140 is a one-way valve; in other embodiments of the present invention, the one-way flow guide 140 can also be a one-way membrane flap or other structure with one-way transmission capability, and its specific structural type is not limited.

[0060] It is worth noting that in order to facilitate the sucked lotion to smoothly enter the one-way flow guide 140, the breast shield 110 can be provided with a liquid guide groove 113, which is connected to the one-way flow guide 140, and the inner diameter area of ​​the liquid guide groove 113 is larger than the inner diameter area of ​​the one-way flow guide 140.

[0061] When the lotion enters the front chamber 111 and moves toward the suction bowl 120 , it first enters the liquid guiding groove 113 under the influence of gravity, and the liquid guiding groove 113 gathers the lotion, and then the lotion enters the guide tube 130 to move toward the milk storage container 400 .

[0062] In this embodiment, in order to facilitate processing and forming, the bottom wall of the liquid-conducting groove 113 can be made flat, and the side wall of the guide vane groove is perpendicular to the bottom wall; in other embodiments of the present invention, the side wall of the liquid-conducting groove 113 can be set obliquely, so that the liquid-conducting groove 113 is a V-shaped structure with a large mouth and a small bottom, which helps to accelerate the flow rate of the emulsion in the liquid-conducting groove 113. In addition, the cross-section of the liquid-conducting groove 113 is circular, and the cross-section of the liquid-conducting groove 113 can also be rectangular, triangular, fan-shaped or other shapes. The specific appearance of the liquid-conducting groove 113, that is, the cross-sectional shape, is not limited.

[0063] refer to Figure 2 and Figure 3 In order to allow the lotion to smoothly enter the milk storage container 400 and reduce the probability of the lotion flying, the bottom end of the one-way flow guide 140 can be extended into the milk storage container 400. When collecting the lotion, the lotion falls from the front cavity 111 into the one-way flow guide 140, and continues to move along the one-way flow guide 140. The lotion enters the milk storage container 400 at the moment of leaving the guide guide, further reducing the probability of the lotion splashing into the exhaust hole 131.

[0064] It should be noted that, in order to improve the anti-slip performance of the flexible tee 100, so that the operator can hold the breast shield 110 to perform the milk pumping operation, the outer wall of the breast shield 110 can be formed with an anti-slip boss 118, and the anti-slip boss 118 is annular or has an arc structure arranged at intervals along the circumferential direction. In addition, the number of circles of the anti-slip boss 118 arranged in the axial direction is two groups.

[0065] In other embodiments of the present invention, the number of axially arranged anti-slip bosses 118 may be one, three, five, etc., and the specific number and arrangement of the anti-slip bosses 118 are not limited.

[0066] refer to Figure 2 and Figure 4 The handheld breast pump 1000 further includes a rear cover 200, which is sealed with the rear end of the breast shield 110, and the negative pressure source 300 is arranged through the rear cover 200. The rear cover 200 can improve the sealing of the rear cavity 112 so that the negative pressure source 300 can quickly establish a negative pressure environment in the rear cavity 112, thereby driving the suction cup 120 to deform. Specifically, the rear cover 200 is provided with a through hole, and the negative pressure pipe of the negative pressure source 300 is connected to the through hole or accommodated in the through hole.

[0067] refer to Figure 5A ventilation gap 250 is formed between the bottom end of the rear cover 200 and the side wall of the guide tube 130, and the outlet of the exhaust hole 131 is located at the front side of the rear cover 200 and is higher than the ventilation gap 250. In the working state, the ventilation gap 250 is used to provide an outlet channel for the outlet of the exhaust hole 131, and the rear cover 200 can also shield and protect the outlet of the exhaust hole 131 to prevent external bacteria from entering the exhaust hole 131 from the outlet of the exhaust hole 131, thereby preventing the guide tube 130 and the milk storage container 400 from being contaminated.

[0068] Furthermore, the inner wall of the breast shield 110 defining the rear cavity 112 may be formed with a positioning slot 115, and the front side of the rear cover 200 may be formed with a positioning block 210, which is accommodated in the positioning slot 115 and abuts against the suction bowl 120. The positioning slot 115 and the positioning block 210 cooperate to position the rear cover 200, so that the rear cover 200 is stably connected to the breast shield 110. Furthermore, the rear cover 200 abuts against the suction bowl 120 at the same time to improve the support for the suction bowl 120, so that even if the suction bowl 120 is deformed under the action of negative pressure, it will not easily detach from the breast shield 110, thereby improving the working stability of the suction bowl 120 and helping to improve the service life of the flexible tee 100.

[0069] It is worth noting that in order to improve the assembly accuracy of the breast shield 110 and the rear cover 200, an assembly boss 116 may be formed on the outer wall of the breast shield 110 away from the rear end, and the assembly boss 116 is used to cooperate with the rear cover 200. Specifically, the assembly boss 116 extends in the radial direction of the breast shield 110, and the rear end surface of the assembly boss 116 abuts against the rear cover 200.

[0070] In this embodiment, in order to ensure the sealing performance of the breast shield 110 and the back cover 200, the breast shield 110 can define a second sealing boss 119 formed on the inner wall of the back and front sides, and the outer wall of the back cover 200 can form a second sealing groove 220, and the second sealing boss 119 is accommodated in the second sealing groove 220, thereby avoiding the presence of a connection gap between the two and affecting the negative pressure formation rate.

[0071] refer to Figure 1 , Figure 2 and Figure 6In order to improve the support of the breast shield 110 and prevent the breast shield 110 from being easily deformed during operation and affecting the milk suction effect, the handheld breast pump 1000 may further include a lining assembly 500, the lining assembly 500 including an areola shield 510 and a lining frame 530, the areola shield 510 is accommodated in the front cavity 111, the areola shield 510 is provided with a liquid outlet channel 515, the liquid outlet channel 515 is communicated with the guide tube 130, the lining frame 530 is supported between the areola shield 510 and the breast shield 110, and the strength of the lining frame 530 is greater than the strength of the areola shield 510 and the breast shield 110.

[0072] In the working state, the milk will enter the front cavity 111 after leaving the breast, and then enter the inner side of the areola shield 510, and then enter the milk storage container 400 after passing through the liquid outlet channel 515 and the one-way flow guide 140 in sequence under the influence of gravity. In addition, by providing the lining frame 530, the support performance of the areola shield 510 and the breast shield 110 can be improved to prevent the two from being easily deformed during use.

[0073] refer to Figure 6 and Figure 7 In order to prevent the emulsion from passing through the liquid outlet channel 515 due to excessive negative pressure, the liquid isolation membrane 520 can block the emulsion, so that the blocked emulsion can enter the liquid outlet channel 515, thereby preventing the emulsion from adhering to the surface of the suction bowl 120, thereby helping to improve the collection efficiency of the emulsion.

[0074] Furthermore, in order to avoid the negative impact of the setting of the liquid isolation membrane 520 on the formation of negative pressure in the front cavity 111, the liquid isolation membrane 520 can be provided with a vent 523, which is used to connect the cavities on both sides of the liquid isolation membrane 520, thereby helping to increase the rate of formation of negative pressure in the front cavity 111.

[0075] In some optional embodiments, in order to prevent the emulsion from passing through the vent hole 523 and adhering to the suction bowl 120, the vent hole 523 can be located at the top of the liquid barrier membrane 520. Even if some emulsion approaches and adheres to the liquid barrier membrane 520, it will deviate from the vent hole 523 located at the top of the liquid barrier membrane 520 under the influence of gravity, thereby reducing the chance of emulsion leakage and improving the collection efficiency of the emulsion.

[0076] It should be noted that, in order to facilitate the deformation of the suction cup 120 to drive the front cavity 111 to generate negative pressure, the middle area of ​​the suction cup 120 can be arranged away from the front end of the breast shield 110 relative to the edge area, so that the negative pressure force in the middle area of ​​the front cavity 111 is the strongest, so as to act on the breast for efficient milk suction. Similarly, the middle area of ​​the diaphragm 520 can be arranged away from the front end of the breast shield 110 relative to the edge area, so that the shape of the diaphragm 520 is close to the shape of the suction cup 120, which is also helpful to generate a high-intensity negative pressure force in the middle area of ​​the front cavity 111.

[0077] refer to Figure 2 , the rear end of the areola shield 510 can be abutted against the suction cup 120, and the suction cup 120 can be supported in the axial direction, thereby improving the connection stability of the edge of the suction cup 120, which can prevent the suction cup 120 from separating from the breast shield 110 and prevent the inner wall of the breast shield 110 from being deformed due to the deformation of the suction bowl 120.

[0078] Furthermore, in order to prevent a cavity from being formed between the areola shield 510 and the inner wall of the breast shield 110 and affecting the rate of negative pressure formation in the front cavity 111, a first sealing boss 5121 may be formed on the outer wall of the areola shield 510 near the rear end, and a first sealing groove 114 may be formed on the inner wall of the breast shield 110 defining the front cavity 111, and the first sealing boss 5121 is accommodated in the first sealing groove 114.

[0079] It should be noted that in other embodiments of the present invention, under the premise of ensuring the same effect, the positions of the grooves and the bosses can be swapped, and the specific setting objects of the grooves and the bosses are not specifically limited.

[0080] refer to Figure 6 and Figure 7 The areola cover 510 includes a flared section 511 and an extension section 512 which are sequentially arranged from the front end to the rear end. The inner diameter of the flared end gradually decreases in the direction close to the extension section 512. An anti-backflow buckle 513 is formed at the position where the flared section 511 and the extension section 512 are connected. The liquid outlet channel 515 is opened in the extension section 512. In this embodiment, the flared section 511 is trumpet-shaped and is placed on the breast for milk suction.

[0081] When the lotion is sucked out from the breast, it first passes through the flared section 511 , then enters the extended section 512 , and then falls into the liquid outlet channel 515 . The anti-backflow buckle 513 can prevent the lotion attached to the extended section 512 from flowing toward the flared section 511 .

[0082] In some optional embodiments, in order to improve the relative position accuracy of the areola shield 510 and the breast shield 110, a limiting boss 5122 can be formed on the outer wall of the extension section 512 close to the expansion section 511. At the same time, the breast shield 110 defines a limiting groove 109 on the inner wall of the front cavity 111, and the limiting boss 5122 is accommodated in the limiting groove 109.

[0083] It is worth noting that in order to improve the convenience of disassembly and assembly of the assembly and the breast shield 110, a limiting guide groove 117 is formed on the inner wall of the breast shield 110 that defines the front cavity 111, and a limiting guide boss 531 is formed at the top of the lining frame 530, and the limiting guide boss 531 cooperates with the limiting guide groove 117.

[0084] Specifically, the outer wall of the areola shield 510 (which can also be understood as the outer wall of the extension section 512) can be provided with a receiving groove 5123, the limiting guide boss 531 is accommodated in the receiving groove 5123, and the top end protrudes from the side wall of the receiving groove 5123, thereby improving the relative position accuracy of the limiting guide boss 531 and the guide bracket.

[0085] In summary, the handheld breast pump 1000 provided in the embodiment of the present invention has at least the following advantages:

[0086] (1) The handheld breast pump 1000 integrates the breast shield 110, the suction cup 120 and the guide tube 130 into a flexible tee 100, thereby reducing the number of parts through structural optimization. While facilitating the milk pumping operation, the handheld breast pump 1000 is also easy to disassemble, thereby improving the convenience of cleaning operations.

[0087] (2) The handheld breast pump 1000 facilitates the timely discharge of gas in the guide tube 130 by providing the exhaust hole 131, and defines the relative height relationship among the outlet and inlet of the exhaust hole 131, the inlet of the milk storage container 400, and the bottom end of the one-way flow guide 140, thereby ensuring that the milk enters the milk storage container 400 smoothly and is difficult to splash to the inlet position of the exhaust hole 131. Even if it splashes to the inlet, it will not overcome gravity and leak out from the outlet.

[0088] (3) The handheld breast pump 1000 forms a ventilation gap 250 between the bottom end of the rear cover 200 and the side wall of the guide tube 130, and the outlet of the exhaust hole 131 is located at the front side of the rear cover 200 and higher than the ventilation gap 250. This facilitates the exhaust operation of the exhaust hole 131 and shields and protects the exhaust hole 131, thereby preventing external bacteria from entering the exhaust hole 131 from the outlet of the exhaust hole 131, thereby preventing the guide tube 130 and the milk storage container 400 from being contaminated.

[0089] (4) The handheld breast pump 1000 can simultaneously support both sides of the edge of the suction cup 120 through the rear cover 200 and the areola shield 510. On the one hand, the connection stability of the edge of the suction cup 120 is improved to prevent the suction cup 120 from being separated from the breast shield 110; on the other hand, the deformation of the suction bowl 120 will not cause the inner wall of the breast shield 110 to deform.

[0090] (5) The handheld breast pump 1000 limits the middle area of ​​the suction cup 120 to be disposed away from the front end of the breast shield 110 relative to the edge area, and limits the middle area of ​​the diaphragm 520 to be disposed away from the front end of the breast shield 110 relative to the edge area. This helps the suction cup 120 to deform to drive the front cavity 111 to generate negative pressure, and makes the negative pressure in the middle area of ​​the front cavity 111 the strongest, so as to act on the breast for efficient milk suction.

[0091] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A handheld breast pump, characterized in that: include: A flexible three-way joint (100), a rear cover (200), a negative pressure source (300) and a milk storage container (400); The flexible three-way connection (100) comprises a breast shield (110), a suction bowl (120) and a flow guide tube (130); the suction bowl (120) is connected to the breast shield (110); the suction bowl (120) is used to form a front cavity (111) with the breast; a rear cavity (112) is formed between the suction bowl (120) and the rear cover (200); the negative pressure source (300) is connected to the rear cavity (112) through the rear cover (200); the front cavity (111), the flow guide tube (130) and the milk storage container (400) are connected in sequence from top to bottom; the breast shield (110), the suction bowl (120) and the flow guide tube (130) are integrally formed; The negative pressure source (300) drives the suction bowl (120) to deform, so that the front chamber (111) generates negative pressure to suck out the milk, and the milk moves toward the milk storage container (400) under the action of gravity.

2. The handheld breast pump according to claim 1, characterized in that: The flexible tee (100) further comprises a one-way flow guide (140); The one-way flow guide (140) is integrally formed with the breast shield (110), the suction bowl (120) and the flow guide tube (130); Alternatively, the one-way air guide (140) is detachably connected to the breast shield (110).

3. The handheld breast pump according to claim 2, characterized in that: The breast shield (110) is provided with a liquid guiding groove (113), the liquid guiding groove (113) is in communication with the one-way flow guide (140), and the inner diameter area of ​​the liquid guiding groove (113) is greater than the inner diameter area of ​​the one-way flow guide (140).

4. The handheld breast pump according to claim 1, characterized in that: An exhaust hole (131) is provided on the side wall of the guide tube (130), and an outlet of the exhaust hole (131) is arranged higher than an inlet of the exhaust hole (131).

5. The handheld breast pump according to claim 4, characterized in that: The exhaust holes (131) are arranged in a spiral along the circumference of the guide tube (130); Alternatively, the exhaust hole (131) is arranged in an arc shape; Alternatively, the exhaust hole (131) is arranged obliquely.

6. The handheld breast pump according to claim 4, characterized in that: A ventilation gap (250) is formed between the bottom end of the rear cover (200) and the side wall of the guide tube (130), and the outlet of the exhaust hole (131) is located at the front side of the rear cover (200) and is arranged higher than the ventilation gap (250).

7. The handheld breast pump according to any one of claims 1 to 6, characterized in that: The inner wall of the breast shield (110) defining the rear cavity (112) is formed with a positioning slot (115), and the front side of the rear cover (200) is formed with a positioning block (210), and the positioning block (210) is accommodated in the positioning slot (115) and abuts against the suction bowl (120).

8. The handheld breast pump according to any one of claims 1 to 6, characterized in that: The breast shield (110) defines an inner wall of the rear cavity (112) having a sealing boss (114) formed thereon, and the sealing boss (114) is used to cooperate with the rear cover (200); And / or, the inner wall of the breast shield (110) defining the rear cavity (112) is formed with a positioning slot (115), and the positioning slot (115) is used for matching with the rear cover (200).

9. The handheld breast pump according to any one of claims 1 to 6, characterized in that: An outer wall at the rear end of the breast shield (110) is formed with a mounting boss (116), and the mounting boss (116) is used to cooperate with the rear cover (200).

10. The handheld breast pump according to any one of claims 1 to 6, characterized in that: The middle area of ​​the suction cup (120) is arranged away from the front end of the breast shield (110) relative to the edge area.

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