Breast pump

Abstract

The invention discloses a breast pump, and relates to the technical field of breast pumps. The breast pump comprises a bra, a breathing bowl, a one-way flow guide part and an air suction mechanism. The brassiere comprises a horn cover, a connecting cylinder and an extension ring which are integrally formed, the horn cover is arranged at an opening of the connecting cylinder, the extension ring is perpendicular to the upper end of the connecting cylinder and communicated with the connecting cylinder, the breathing bowl is arranged in the extension ring at the upper end of the connecting cylinder, and the inspiration mechanism is mounted at the upper end of the extension ring. The breathing bowl is used for generating elastic deformation under the suction effect of the air suction mechanism so that negative pressure can be formed in the bra and milk can be sucked out, and the one-way flow guide part is arranged at the lower end of the connecting cylinder and used for allowing the milk to flow out. Compared with the prior art, the breast pump has the advantages that the space above the bra can be reasonably utilized, the overall protruding length of the breast pump is reduced, the occupied space is reduced, the light degree is improved, operation is convenient, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of breast pumps, and in particular to a breast pump. Background Art

[0002] A breast pump is a tool used to suck out breast milk accumulated in the mammary glands, and is generally used when the baby cannot directly suck breast milk. The bra and air pump head in the breast pumps currently on the market are generally stacked, and the air pump mechanism is located on the side of the bra away from the breast. As a result, the entire breast pump protrudes longer, occupies more space, is inconvenient to operate, and has a poor user experience.

[0003] In view of this, it is particularly important to design and manufacture a breast pump that occupies less space and is easy to operate, especially in the production of breast pumps. Summary of the invention

[0004] The object of the present invention is to provide a breast pump that can reasonably utilize the space above the bra, reduce the overall protruding length of the breast pump, reduce the occupied space, increase the degree of portability, facilitate operation, and enhance the user experience.

[0005] The present invention is achieved by adopting the following technical solutions.

[0006] A breast pump comprises a bra, a breathing cup, a one-way flow guide and a suction mechanism. The bra comprises an integrally formed trumpet cover, a connecting tube and an extension ring. The trumpet cover is arranged at the opening of the connecting tube. The extension ring is arranged perpendicular to the upper end of the connecting tube and is connected to the connecting tube. The breathing cup is arranged in the extension ring at the upper end of the connecting tube. The suction mechanism is installed at the upper end of the extension ring. The breathing cup is used to be elastically deformed under the suction force of the suction mechanism so as to form a negative pressure in the bra and suck out the milk. The one-way flow guide is arranged at the lower end of the connecting tube and is used to allow the milk to flow out.

[0007] Optionally, the breathing cup is integrally formed with the bra; or, the one-way flow guide is integrally formed with the bra; or, the breathing cup, the bra and the one-way flow guide are integrally formed.

[0008] Optionally, the suction mechanism includes a shell and an air pump and a controller installed in the shell. The shell, the extension ring and the breathing bowl together form a breathing cavity. The shell is provided with an exhaust port connected to the breathing cavity. The controller is electrically connected to the air pump, and the air pump is connected to the exhaust port. The air pump is used to draw air in the breathing cavity into the shell.

[0009] Optionally, the air inhalation mechanism further includes a solenoid valve, the shell further has an air inlet connected to the breathing cavity, the controller is electrically connected to the solenoid valve, the solenoid valve is connected to the air inlet, and the solenoid valve is used to open or close the air inlet.

[0010] Optionally, the air suction mechanism also includes an air bag, which is arranged in the breathing cavity and connected to the shell and is connected to the air suction port and the air inlet at the same time. The air bag is used to drive the breathing bowl to undergo elastic deformation.

[0011] Optionally, the airbag includes a mounting portion, a bellows portion and a bladder body portion, the mounting portion and the bladder body portion are relatively arranged at two ends of the bellows portion, the bladder body portion is arranged in close contact with the breathing cup, the mounting portion is provided with a limiting groove, the outer shell is provided with a limiting column, and the limiting column cooperates with the limiting groove.

[0012] Optionally, the mounting portion is provided with a limiting groove, the housing is provided with a limiting column, and the limiting column cooperates with the limiting groove.

[0013] Optionally, the air suction mechanism further comprises a pressure ring, which is clamped between the outer shell and the extension ring, and is used to seal the gap between the outer shell and the extension ring.

[0014] Optionally, the pressure ring includes a supporting portion, a first extension portion, a connecting portion, and a second extension portion. The first extension portion and the second extension portion are relatively arranged at two ends of the connecting portion. The first extension portion, the connecting portion and the second extension portion jointly form a matching groove. The extension ring cooperates with the matching groove. The first extension portion is sealingly connected to the extension ring. The supporting portion is connected to a side of the connecting portion away from the second extension portion, and the supporting portion is sealingly connected to the outer shell.

[0015] Optionally, the shell includes a bottom plate and a top cover, the top cover is disposed on the bottom plate and is sealed to the bottom plate, and the air extraction port is opened on the bottom plate.

[0016] The breast pump provided by the present invention has the following beneficial effects:

[0017] The breast pump provided by the present invention comprises a bra including an integrally formed horn cover, a connecting tube and an extension ring, the horn cover is arranged at the opening of the connecting tube, the extension ring is arranged perpendicular to the upper end of the connecting tube and is connected with the connecting tube, the breathing cup is arranged in the extension ring at the upper end of the connecting tube, the suction mechanism is installed at the upper end of the extension ring, the breathing cup is used to be elastically deformed under the suction force of the suction mechanism, so that negative pressure is formed in the bra and milk is sucked out, and a one-way flow guide is arranged at the lower end of the connecting tube, and the one-way flow guide is used to allow milk to flow out. Compared with the prior art, the breast pump provided by the present invention can reasonably utilize the space above the bra, reduce the overall protruding length of the breast pump, reduce the occupied space, improve the degree of portability, facilitate operation, and enhance user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are 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 creative work.

[0019] Figure 1 An exploded view of a breast pump provided in accordance with a first embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a breast pump provided in accordance with a first embodiment of the present invention;

[0021] Figure 3 An exploded view of the suction mechanism in the breast pump provided by the first embodiment of the present invention;

[0022] Figure 4 for Figure 2 A partial enlarged view of middle IV;

[0023] Figure 5 A cross-sectional view showing the connection between a bra shield and a liner in a breast pump provided by the first embodiment of the present invention;

[0024] Figure 6 A cross-sectional view of a breast pump provided in accordance with a second embodiment of the present invention;

[0025] Figure 7 for Figure 6 A partial enlarged view of Figure VII;

[0026] Figure 8 This is a schematic structural diagram of an air bag in a breast pump provided by a second embodiment of the present invention.

[0027] Icons: 100-breast pump; 110-breast shield; 111-first boss; 112-sealing groove; 113-positioning groove; 114-horn cover; 115-connecting tube; 116-extension ring; 120-lining; 121-milking tube; 122-flared cup; 123-vent; 124-milk leakage hole; 125-reverse stop buckle; 126-sealing boss; 127-limiting boss; 128-lining frame; 129-lining body; 130-breathing bowl; 140-one-way flow guide; 150-suction mechanism; 151-housing; 1511-bottom plate; 1512-top cover; 1513-limiting column; 152-air pump; 153-controller; 154-solenoid valve; 155-exhaust port; 156-air inlet; 157-battery; 158-charging port; 159-second annular groove; 160-breathing cavity; 170-pressure ring; 171-supporting part; 172-first extension part; 173-connecting part; 174-second extension part; 175-matching groove; 176-first annular groove; 177-second boss; 180-front cavity; 190-air bag; 191-installation part; 192-bellows part; 193-bag body part; 194-limiting groove. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does 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 limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0034] First embodiment

[0035] Please refer to Figures 1 to 5The embodiment of the present invention provides a breast pump 100 for sucking out breast milk. The breast pump 100 can reasonably utilize the space above the bra 110, reduce the overall protruding length of the breast pump 100, reduce the occupied space, improve the portability, facilitate operation, and enhance the user experience.

[0036] The breast pump 100 comprises a bra 110, a breathing cup 130, a one-way air guide 140 and an air suction mechanism 150. The bra 110 comprises an integrally formed horn cover 114, a connecting tube 115 and an extension ring 116. The horn cover 114 is arranged at the opening of the connecting tube 115, and the extension ring 116 is arranged perpendicular to the upper end of the connecting tube 115 and is connected to the connecting tube 115, that is, the extension ring 116 is arranged perpendicularly outside the side wall of the connecting tube 115 and is connected to the connecting tube 115, the axial direction of the extension ring 116 is perpendicular to the axial direction of the connecting tube 115, and the horn cover 114 and the connecting tube 115 are arranged coaxially. The breathing bowl 130 is arranged in the extension ring 116 at the upper end of the connecting tube 115, and the suction mechanism 150 is installed at the upper end of the extension ring 116. The suction mechanism 150 is used to extract air so that the breathing bowl 130 is elastically deformed under the action of negative pressure, and when the suction mechanism 150 stops working, the breathing bowl 130 will rebound and reset under the action of its own elastic force. The breathing bowl 130 is used to be elastically deformed under the suction force of the suction mechanism 150 so that negative pressure is formed in the bra 110 and milk is sucked out. The one-way flow guide 140 is arranged at the lower end of the connecting tube 115. The one-way flow guide 140 is used to allow milk to flow out, and the one-way flow guide 140 is also used to prevent milk or external air from flowing back. In this way, since the suction mechanism 150 is placed upward (the suction mechanism 150 is arranged above the bra 110), the space above the bra 110 is reasonably utilized, the overall protruding length of the breast pump 100 in the direction perpendicular to the user's chest is reduced, the space occupied by the breast pump 100 is reduced, the portability is increased, the operation is convenient, and the user experience is improved.

[0037] In this embodiment, the breathing cup 130 and the bra 110 are integrally formed to improve the overall strength and reduce the number of parts, thereby improving the efficiency of disassembly and assembly of the breast pump 100 and facilitating assembly for milk pumping and disassembly and cleaning. The one-way air flow guide 140 is separately arranged from the bra 110, and the one-way air flow guide 140 is detachably installed at the bottom of the bra 110 so that it can be removed separately for cleaning or replacement.

[0038] Furthermore, the bra 110, the breathing cup 130 and the one-way flow guide 140 are all made of a silicone material, which has a certain elasticity, can realize the milk-sucking function, and is comfortable. In other embodiments, the bra 110, the breathing cup 130 and the one-way flow guide 140 can also be made of other flexible materials.

[0039] In an optional embodiment, the breathing cup 130 and the bra 110 can be separately provided, and the one-way flow guide 140 and the bra 110 can be integrally formed; the breathing cup 130, the bra 110 and the one-way flow guide 140 can also be integrally formed; the breathing cup 130, the bra 110 and the one-way flow guide 140 can also be separately provided; there is no specific limitation on the connection method of the breathing cup 130, the bra 110 and the one-way flow guide 140.

[0040] Furthermore, the one-way flow guide 140 is a one-way valve. In other embodiments of the present invention, the one-way flow guide 140 may also be a one-way valve or other structure with one-way transmission capability, and the specific structure type is not limited.

[0041] The air suction mechanism 150 includes a housing 151 and an air pump 152, a controller 153 and a solenoid valve 154 installed in the housing 151. The housing 151, the extension ring 116 and the breathing bowl 130 together form a breathing cavity 160. The housing 151 is provided with an air suction port 155 and an air inlet 156, and the air suction port 155 and the air inlet 156 are both connected to the breathing cavity 160. The controller 153 is electrically connected to the air pump 152 and the solenoid valve 154 at the same time, and the controller 153 is used to control the air pump 152 and the solenoid valve 154 to start or pause. Specifically, the air pump 152 is connected to the air suction port 155 through an air pipe, and the air pump 152 is used to draw the air in the breathing cavity 160 into the outer shell 151 to achieve the negative pressure milk suction function; the solenoid valve 154 is connected to the air inlet 156, and the solenoid valve 154 is used to open or close the air inlet 156 to ensure the reliability of negative pressure milk suction and facilitate the control of the rebound of the breathing bowl 130.

[0042] Furthermore, during the milk pumping process, the controller 153 controls the air pump 152 to pump air, and controls the solenoid valve 154 to close the air inlet 156. At this time, the air pump 152 pumps the air in the breathing cavity 160 into the outer shell 151 to increase the air pressure in the outer shell 151, and the air in the outer shell 151 cannot enter the breathing cavity 160 through the air inlet 156, so that a negative pressure is formed in the breathing cavity 160, so that the breathing bowl 130 is elastically deformed upward; and during the resetting process, the controller 153 controls the air pump 152 to pause, and controls the solenoid valve 154 to open the air inlet 156. At this time, the air in the outer shell 151 enters the breathing cavity 160 through the air inlet 156 under the action of the pressure difference, and the breathing bowl 130 rebounds and resets under the action of its own elastic force.

[0043] In an optional embodiment, the suction mechanism 150 further includes a battery 157, which is installed in the housing 151 and is electrically connected to the controller 153, the solenoid valve 154 and the air pump 152. The battery 157 is used to supply power to the controller 153, the solenoid valve 154 and the air pump 152. Furthermore, a charging port 158 ​​is sealed on the housing 151, and the charging port 158 ​​is electrically connected to the battery 157. The user can charge the battery 157 through the charging port 158 ​​to achieve the reuse of the breast pump 100.

[0044] In an optional embodiment, the housing 151 includes a bottom plate 1511 and a top cover 1512. The top cover 1512 is disposed on the bottom plate 1511, and the top cover 1512 and the bottom plate 1511 are sealed and connected by ultrasonic welding, bonding, hot-melt connection, etc. The air pump 152, the controller 153, the solenoid valve 154 and the battery 157 are all disposed between the bottom plate 1511 and the top cover 1512, the air suction port 155 and the air inlet 156 are both opened on the bottom plate 1511, and the bottom plate 1511, the bra 110 and the breathing bowl 130 together form a breathing cavity 160.

[0045] Preferably, the air inhalation mechanism 150 further includes a pressure ring 170. The pressure ring 170 is sandwiched between the outer shell 151 and the extension ring 116, and the pressure ring 170 is used to seal the gap between the outer shell 151 and the extension ring 116, thereby improving the airtightness of the breathing cavity 160. Specifically, the pressure ring 170 and the bottom plate 1511 of the outer shell 151 are sealed and connected by ultrasonic welding, bonding, hot melt connection, etc., to improve the sealing performance.

[0046] In an optional embodiment, the pressure ring 170 includes a supporting portion 171, a first extension portion 172, a connecting portion 173, and a second extension portion 174. The first extension portion 172 and the second extension portion 174 are arranged at two ends of the connecting portion 173, and the first extension portion 172, the connecting portion 173, and the second extension portion 174 together form a matching groove 175. The extension ring 116 cooperates with the matching groove 175 to define the relative position of the bra 110 and the pressure ring 170, so as to prevent the bra 110 from accidentally detaching from the pressure ring 170. Further, the first extension portion 172 is sealedly connected to the extension ring 116 to seal the gap between the first extension portion 172 and the bra 110; the supporting portion 171 is connected to the side of the connecting portion 173 away from the second extension portion 174, and the supporting portion 171 is sealedly connected to the outer shell 151 to seal the gap between the supporting portion 171 and the outer shell 151.

[0047] In an optional embodiment, the extension ring 116 is provided with a first boss 111, and the first extension portion 172 is provided with a first annular groove 176. The first boss 111 cooperates with the first annular groove 176 to seal the gap between the first extension portion 172 and the extension ring 116, thereby preventing air leakage and ensuring the airtightness of the breathing cavity 160. In addition, the cooperation between the first boss 111 and the first annular groove 176 can also play a limiting role, thereby fixing the relative position of the bra 110 and the pressure ring 170, thereby preventing the bra 110 from accidentally detaching from the pressure ring 170.

[0048] In an optional embodiment, the abutting portion 171 is provided with a second boss 177, and the housing 151 is provided with a second annular groove 159. The second boss 177 cooperates with the second annular groove 159 to seal the gap between the abutting portion 171 and the housing 151, prevent air leakage, and ensure the airtightness of the breathing cavity 160. In addition, the cooperation between the second boss 177 and the second annular groove 159 can also play a limiting role, so as to fix the relative position of the housing 151 and the pressure ring 170, and prevent the pressure ring 170 from accidentally detaching from the housing 151.

[0049] In some embodiments, a liner 120 adapted to the bra 110 is further provided. Specifically, the liner 120 is installed in the bra 110, and is disposed between the breathing cup 130 and the one-way flow guide 140, and is communicated with the one-way flow guide 140. The liner 120 is used to fit the breast and allow the nipple to extend therein, and the breathing cup 130 is used to elastically deform upward under the suction force of the suction mechanism 150, so that negative pressure is formed in the liner 120 and milk is sucked out.

[0050] In an optional embodiment, the liner 120 includes a milking barrel 121 and a flared cup 122. The flared cup 122 is trumpet-shaped and is disposed at the opening of the milking barrel 121. The flared cup 122 is used to fit the breast, and the milking barrel 121 is used for the nipple to be inserted. The milking barrel 121 is provided with a vent hole 123 on one side in the radial direction and a milk leakage hole 124 on the other side. In this embodiment, the vent hole 123 is disposed at the top of the milking barrel 121, and the milk leakage hole 124 is disposed at the bottom of the milking barrel 121. Specifically, the breathing cup 130 is isolated between the breathing cavity 160 and the vent hole 123. During the upward deformation process, the breathing cup 130 will suck out the air in the milk pump 121 through the vent hole 123, thereby realizing the negative pressure milk suction function; the milk leakage hole 124 is connected to the one-way flow guide 140, and the milk sucked out by negative pressure can flow out of the milk pump 121 through the milk leakage hole 124, and flow out of the bra 110 through the one-way flow guide 140.

[0051] Furthermore, the milk pump 121, the breathing cup 130 and the bra 110 together form a front cavity 180, the breathing cup 130 is isolated between the breathing cavity 160 and the front cavity 180, and the vent 123 is connected to the front cavity 180. The front cavity 180 can quickly form a negative pressure in the breathing cup 130 during the deformation process, thereby improving the milk suction efficiency. When the breathing cup 130 is elastically deformed upward under the suction force of the suction mechanism 150, the volume of the front cavity 180 increases and forms a negative pressure, so that the air in the milk pump 121 is sucked out through the vent 123, thereby forming a negative pressure in the milk pump 121, and then sucking out the milk.

[0052] In an optional embodiment, a non-return buckle 125 is provided at one end of the breast pump 121 close to the flared cup 122. The non-return buckle 125 is provided on the inner wall of the breast pump 121. The non-return buckle 125 is annular in shape. The non-return buckle 125 is used to surround the nipple and always keep in contact with the breast during use to prevent milk from flowing back outwards, thereby improving user experience.

[0053] Preferably, the outer wall of the milking cylinder 121 is provided with a sealing boss 126, and the connecting cylinder 115 is provided with a sealing groove 112, which is annular, and the sealing boss 126 cooperates with the sealing groove 112 to seal the gap between the milking cylinder 121 and the connecting cylinder 115 to prevent air leakage and ensure the airtightness of the front cavity 180. In addition, the sealing boss 126 cooperates with the sealing groove 112 to play a limiting role, so as to fix the relative position of the bra 110 and the liner 120, and prevent the liner 120 from accidentally detaching from the bra 110.

[0054] Preferably, the flared cup 122 is provided with a limiting boss 127, and the horn cover 114 is provided with a positioning groove 113, and the limiting boss 127 cooperates with the positioning groove 113 to further limit the relative position of the bra 110 and the liner 120 to prevent the liner 120 from rotating relative to the bra 110.

[0055] In an optional embodiment, the liner 120 includes a liner frame 128 and a liner body 129. The liner body 129 is partially embedded in the liner frame 128, and the liner frame 128 is used to support and position the liner body 129 to increase the structural strength of the entire liner 120 and prevent the liner 120 from being deformed by negative pressure during milk suction.

[0056] Specifically, during the operation of the breast pump 100, the breast pump 100 is first put on so that the bra 110 and the liner 120 are both fitted to the breast (the liner 120 is placed on the areola), and the nipple is inserted into the liner 120; then, the suction mechanism 150 is started to extract the air in the breathing cavity 160, so that a negative pressure is formed in the breathing cavity 160, so that the breathing cup 130 is elastically deformed upward. At this time, since the liner 120 is closely fitted to the breast, a negative pressure is formed in the liner 120, so that milk is sucked out, and the milk flows downward under the action of gravity. And it flows out through the one-way flow guide 140 (generally, an external feeding bottle is used to collect milk under the one-way flow guide 140), so that milk can be sucked out. In this process, due to the effect of the one-way flow guide 140, milk or external air will not flow back, thereby ensuring the reliability of milk sucking. When one suction is completed, the suction mechanism 150 is paused, and the breathing cup 130 will rebound and reset under the action of its own elastic force, and suck the external air into the breathing cavity 160, while the air in the liner 120 will also return to normal pressure, and no more milk will be sucked out. This cycle is repeated until the milk sucking operation is completed.

[0057] The breast pump 100 provided in the embodiment of the present invention comprises a bra 110 including an integrally formed horn cover 114, a connecting tube 115 and an extension ring 116, the horn cover 114 is arranged at the opening of the connecting tube 115, the extension ring 116 is arranged perpendicular to the upper end of the connecting tube 115 and is connected with the connecting tube 115, the breathing cup 130 is arranged in the extension ring 116 at the upper end of the connecting tube 115, the suction mechanism 150 is installed at the upper end of the extension ring 116, the breathing cup 130 is used to be elastically deformed under the suction force of the suction mechanism 150, so that negative pressure is formed in the bra 110 and milk is sucked out, and the one-way flow guide 140 is arranged at the lower end of the connecting tube 115, and the one-way flow guide 140 is used to allow milk to flow out. Compared with the prior art, the breast pump 100 provided by the present invention can reasonably utilize the space above the bra 110, reduce the overall protruding length of the breast pump 100, reduce the occupied space, improve the degree of portability, facilitate operation, and enhance user experience.

[0058] Second embodiment

[0059] Please refer to Figures 6 to 8 The embodiment of the present invention provides a breast pump 100 . Compared with the first embodiment, the difference of this embodiment is that the suction mechanism 150 further includes an air bag 190 .

[0060] In this embodiment, the airbag 190 is arranged in the breathing cavity 160, and is connected to the bottom plate 1511 of the housing 151, and is communicated with the air suction port 155 and the air inlet 156 at the same time. Part of the airbag 190 is arranged in close contact with the breathing bowl 130, and the airbag 190 is used to drive the breathing bowl 130 to undergo elastic deformation. In this way, since the airbag 190 completely shields the air suction port 155 and the air inlet 156, the air suction mechanism 150 can be washed with water after being removed, without worrying about water entering the housing 151 through the air suction port 155 and the air inlet 156 to damage the electrical components (air pump 152, controller 153 and solenoid valve 154), which is highly safe and easy to clean.

[0061] Specifically, during the milk pumping process, the controller 153 controls the air pump 152 to pump air, and controls the solenoid valve 154 to close the air inlet 156. At this time, the air pump 152 pumps the air in the airbag 190 into the shell 151 to increase the air pressure in the shell 151, while the air in the shell 151 cannot enter the airbag 190 through the air inlet 156, so that a negative pressure is formed in the airbag 190, thereby causing the airbag 190 to shrink and deform. In this process, since there is a closed cavity between the airbag 190 and the breathing bowl 130, the airbag 190 will synchronously drive the breathing bowl 130 to elastically deform upward during the shrinkage and deformation process; and in the resetting process, the controller 153 controls the air pump 152 to pause, and controls the solenoid valve 154 to open the air inlet 156. At this time, the air in the shell 151 enters the airbag 190 through the air inlet 156 under the action of the pressure difference, and the airbag 190 rebounds and resets under the action of its own elastic force, thereby driving the breathing bowl 130 to rebound and reset downward.

[0062] In an optional embodiment, the airbag 190 includes an integrally formed mounting portion 191, a bellows portion 192, and a bladder portion 193. The mounting portion 191 and the bladder portion 193 are relatively arranged at the two ends of the bellows portion 192, and the mounting portion 191 is sandwiched between the bottom plate 1511 and the pressure ring 170. The bottom plate 1511 and the pressure ring 170 work together to fix the position of the mounting portion 191 to prevent the mounting portion 191 from accidentally detaching from the bottom plate 1511. The bladder portion 193 is arranged in close contact with the breathing bowl 130, and the bladder portion 193 is used to drive the breathing bowl 130 to deform.

[0063] Preferably, the mounting portion 191 is provided with a limiting groove 194, and the bottom plate 1511 of the outer shell 151 is provided with a limiting column 1513, and the limiting column 1513 cooperates with the limiting groove 194 to limit the relative position of the mounting portion 191 and the bottom plate 1511, thereby fixing the relative position of the airbag 190 and the outer shell 151 and preventing the airbag 190 from rotating relative to the outer shell 151.

[0064] In this embodiment, the number of the limiting grooves 194 and the limiting columns 1513 are both four. The four limiting grooves 194 are arranged in a circular array on the mounting portion 191. Each limiting groove 194 cooperates with a limiting column 1513 to further improve the limiting effect.

[0065] In an optional embodiment, the number of the limiting grooves 194 and the number of the limiting columns 1513 may both be two, or both be three, and the number of the limiting grooves 194 and the number of the limiting columns 1513 are not specifically limited.

[0066] The beneficial effects of the breast pump 100 provided in the embodiment of the present invention are the same as those of the first embodiment, which will not be described in detail. In addition, the breast pump 100 provided in the embodiment of the present invention can also achieve full body water washing of the suction mechanism 150 without causing damage to the suction mechanism 150, which is convenient and practical, highly safe, and provides a good user experience.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A breast pump, characterized in that: The invention comprises a bra, a breathing bowl, a one-way flow guide and a suction mechanism, wherein the bra comprises an integrally formed trumpet cover, a connecting tube and an extension ring, wherein the trumpet cover is arranged at the opening of the connecting tube, the extension ring is arranged perpendicular to the upper end of the connecting tube and is connected with the connecting tube, the breathing bowl is arranged in the extension ring at the upper end of the connecting tube, the suction mechanism is installed at the upper end of the extension ring, the breathing bowl is used to be elastically deformed under the suction force of the suction mechanism so as to form a negative pressure in the bra and suck out the milk, the one-way flow guide is arranged at the lower end of the connecting tube, and the one-way flow guide is used to allow the milk to flow out.

2. The breast pump according to claim 1, characterized in that The breathing cup is integrally formed with the bra; or, the one-way flow guide is integrally formed with the bra; or, the breathing cup, the bra and the one-way flow guide are integrally formed.

3. The breast pump according to claim 1, characterized in that The air suction mechanism includes a shell and an air pump and a controller installed in the shell. The shell, the extension ring and the breathing bowl together form a breathing cavity. The shell is provided with an air suction port connected to the breathing cavity. The controller is electrically connected to the air pump, and the air pump is connected to the air suction port. The air pump is used to draw air in the breathing cavity into the shell.

4. The breast pump according to claim 3, characterized in that The air inhalation mechanism also includes a solenoid valve, the shell is also provided with an air inlet connected to the breathing cavity, the controller is electrically connected to the solenoid valve, the solenoid valve is connected to the air inlet, and the solenoid valve is used to open or close the air inlet.

5. The breast pump according to claim 4, characterized in that The air suction mechanism also includes an air bag, which is arranged in the breathing cavity and connected to the shell, and is simultaneously connected to the air suction port and the air inlet, and the air bag is used to drive the breathing bowl to undergo elastic deformation.

6. The breast pump according to claim 5, characterized in that The airbag includes a mounting portion, a bellows portion and a sac body portion, wherein the mounting portion and the sac body portion are relatively arranged at two ends of the bellows portion, the sac body portion is arranged in close contact with the breathing cup, the mounting portion is provided with a limiting groove, the outer shell is provided with a limiting column, and the limiting column cooperates with the limiting groove.

7. The breast pump according to claim 6, characterized in that The mounting portion is provided with a limiting groove, the housing is provided with a limiting column, and the limiting column cooperates with the limiting groove.

8. The breast pump according to claim 3, characterized in that The air suction mechanism further comprises a pressure ring, which is clamped between the outer shell and the extension ring and is used to seal the gap between the outer shell and the extension ring.

9. The breast pump according to claim 8, characterized in that The pressure ring includes a supporting portion, a first extension portion, a connecting portion, and a second extension portion. The first extension portion and the second extension portion are relatively arranged at two ends of the connecting portion. The first extension portion, the connecting portion, and the second extension portion jointly form a matching groove. The extension ring cooperates with the matching groove. The first extension portion is sealingly connected to the extension ring. The supporting portion is connected to a side of the connecting portion away from the second extension portion. The supporting portion is sealingly connected to the outer shell.

10. The breast pump according to claim 3, characterized in that The shell comprises a bottom plate and a top cover, wherein the top cover is arranged on the bottom plate and is sealedly connected to the bottom plate, and the air extraction port is opened on the bottom plate.

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