A breast pump and method of assembly thereof

Abstract

The present application relates to the technical field of breast pump, and particularly relates to a breast pump and an assembling method thereof. The breast pump comprises a shell, a pressure source and a milk storage container. The shell is provided with a shell mounting cavity and a cover assembly connected to the shell mounting cavity. The cover assembly comprises a horn cover and a breast pumping cavity in communication with the horn cover. The cover assembly and the shell are provided with a first negative pressure cavity and a second negative pressure cavity in communication. The first negative pressure cavity is located on one side close to the horn cover, and the second negative pressure cavity is located on one side away from the horn cover. The shell is provided with a negative pressure channel in communication with the second negative pressure cavity. The horn cover and / or the breast pumping cavity is provided with a deformation area on one side close to the first negative pressure cavity. The deformation area is made of an elastic material. The present application helps to simulate the natural sucking rhythm of the baby, effectively improves the breast pumping efficiency, and better improves the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of breast pumps, in particular to a breast pump and an assembling method thereof. BACKGROUND

[0002] A breast pump is a tool to help mothers collect breast milk, especially for those who cannot directly breastfeed or need to store breast milk for later use. The design of the breast pump can simulate the sucking action of the baby, effectively stimulating the breast to secrete milk and pumping it out.

[0003] As disclosed in Chinese patent document CN215840771U, an electric breast pump is provided with a sealing structure between the suction bowl and the bowl groove, and between the suction bowl and the negative pressure cavity, to ensure air tightness. The suction bowl is connected to the end of the lengthened part. After deformation, the suction bowl forms a negative pressure with the bowl groove and drives the breast to be squeezed and stimulated. This pumping method cannot completely simulate the action of baby sucking, resulting in that the user cannot effectively express the milk.

[0004] Therefore, it is necessary to improve the breast pump to improve the efficiency of expressing milk and better improve the user experience. SUMMARY

[0005] In view of the technical problem that the above-mentioned pumping method cannot completely simulate the action of baby sucking, resulting in that the user cannot effectively express the milk, the technical solution adopted by the present application to solve the technical problem is:

[0006] A breast pump, comprising a shell, a pressure source and a milk storage container, the shell is provided with a shell mounting cavity, a cover assembly connected to the shell mounting cavity, the cover assembly comprises a horn cover and a breast pumping cavity in communication with the horn cover, a first negative pressure cavity and a second negative pressure cavity are provided between the cover assembly and the shell, the first negative pressure cavity is located on one side close to the horn cover, the second negative pressure cavity is located on one side away from the horn cover, the shell is provided with a negative pressure channel in communication with the second negative pressure cavity, the horn cover and / or the breast pumping cavity is provided with a deformation zone on one side close to the first negative pressure cavity, and the deformation zone is made of an elastic material.

[0007] Further, in some embodiments of the present application, the first negative pressure cavity is provided along the opening of the breast pumping cavity, the deformation zone is provided with a deformation structure, and the deformation structure is provided with a plurality of deformation structures and is spaced apart.

[0008] Further, in some embodiments of the present application, the deformation structure is provided with a squeezing part close to the horn cover, and the squeezing part is respectively provided with a first clamping end, a second clamping end and a fitting end located between the first clamping end and the second clamping end, which protrude towards the center of the horn cover.

[0009] Further, in some embodiments of the present application, the cover assembly comprises a support between the shell and the milk suction cavity, the first negative pressure cavity is between the support and the milk suction cavity, the outer side of the support is in abutment with the inner wall of the shell mounting cavity, and the hardness of the support is greater than the hardness of the side of the milk suction cavity close to the horn cover.

[0010] Further, in some embodiments of the present application, the deformation structure is provided with a pressing portion close to the horn cover, a protrusion connected with the pressing portion and located in the first negative pressure cavity, and a first gap between the protrusion and the support.

[0011] Further, in some embodiments of the present application, a support rib in abutment with the support is provided between the horn cover and the outer side of the milk suction cavity, the support rib is provided with a first abutment end, a second abutment end in abutment with the support, and a bypass opening between the first abutment end and the second abutment end, the support rib is provided with a plurality of support ribs and is spaced apart, and the plurality of support ribs and the support rib form a first negative pressure cavity.

[0012] Further, in some embodiments of the present application, the milk suction cavity is provided with an extension extending outwardly, the extension is provided with an extension first opening in communication with the first negative pressure cavity, an extension second opening in communication with the second negative pressure cavity, and a connecting channel connected between the extension first opening and the extension second opening.

[0013] Further, in some embodiments of the present application, the end of the extension is provided with a sealing end in abutment with the inner side of the shell mounting cavity, the sealing end is arranged along the outer periphery of the extension, the second negative pressure cavity is located in the space enclosed by the sealing end, the extension, and the inner side of the shell mounting cavity, and a deformation gap is provided between the sealing end and the end of the extension.

[0014] Further, in some embodiments of the present application, the second negative pressure cavity is located on the side away from the opening of the horn cover, the shell is provided with a guide flange protruding towards the extension, the second negative pressure cavity is provided with a guide cavity between the inner side of the shell and the guide flange, the guide cavity is in communication with the negative pressure channel, the guide cavity is arranged in a ring shape and is provided with a guide opening towards the extension second opening.

[0015] Further, the present application also provides an assembly method of the breast pump, the breast pump further comprises a battery assembly and a circuit board assembly, comprising the following steps,

[0016] S1, connecting the pressure source, the battery assembly and the circuit board assembly on the side of the shell away from the cover assembly;

[0017] S2, the assembled cover body assembly is inserted into the shell mounting cavity;

[0018] S3, the pressure source is communicated with the second negative pressure cavity, and the first negative pressure cavity and the second negative pressure cavity are in communication;

[0019] S4, the cover body assembly is connected with the milk storage container.

[0020] The beneficial effects of the present application are as follows:

[0021] 1, the first negative pressure cavity and the second negative pressure cavity are communicated, and the first negative pressure cavity is close to the position of the horn cover, when the gas enters the second negative pressure cavity, the gas can enter the first negative pressure cavity from the second negative pressure cavity, forming an effective negative pressure area, which helps to ensure the consistency of the breast pumping effect, so that the breast inserted into the breast pumping cavity can be squeezed and stimulated by the elastic deformation area, which helps to simulate the natural sucking rhythm of the baby, effectively improve the breast pumping efficiency, and better improve the user's experience.

[0022] 2, the assembly method of the present application is convenient, which can ensure the consistency of each assembly, and will not cause the deviation of the airway connection in the breast pump, improve the sealing effect in the process of use and the stability of the suction negative pressure process, effectively improve the breast pumping efficiency and user experience. DETAILED DESCRIPTION

[0023] Figure 1 It is a front view of one embodiment of the present application.

[0024] Figure 2 It is an A-A sectional view of Figure 1 .

[0025] Figure 3 It is a cover body assembly part diagram of the present application.

[0026] Figure 4 It is an explosion view of one embodiment of the present application.

[0027] Figure 5 It is an explosion view and a local enlarged view of another view of one embodiment of the present application.

[0028] Figure 6 It is a schematic diagram of another embodiment of the present application.

[0029] Figure 7 It is a B-B sectional view of Figure 6 .

[0030] Figure 8 It is a D part enlarged view of Figure 7 .

[0031] Figure 9 It isFigure 6 B-B another perspective view cutaway view.

[0032] Figure 10 C-C cutaway view. Figure 6

[0033] Figure 11 exploded view and partial enlarged view of another embodiment of the present application.

[0034] Figure 12 exploded view and partial enlarged view of another embodiment of the present application.

[0035] Figure 13 front view schematic diagram in another embodiment of the present application.

[0036] Figure 14 E-E cutaway view. Figure 13

[0037] Figure 15 partial schematic diagram of the cover assembly in another embodiment of the present application. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in detail below with reference to the drawings. The described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0041] Embodiment one

[0042] As Figures 1 to 12 ​​The shown breast pump comprises a shell 1, a pressure source 7 and a milk storage container 8, the shell 1 is provided with a shell mounting cavity 11, a cover assembly 2 connected to the shell mounting cavity 11, the cover assembly 2 comprises a horn cover 20 and a breast pumping cavity 21 in communication with the horn cover 20, a first negative pressure cavity 4 and a second negative pressure cavity 5 are arranged in communication between the cover assembly 2 and the shell 1, the first negative pressure cavity 4 is located on the side close to the horn cover 20, the second negative pressure cavity 5 is located on the side away from the horn cover 20, the horn cover 20 and / or the breast pumping cavity 21 is provided with a deformation area 26 on the side close to the first negative pressure cavity 4, and the deformation area 26 is made of elastic material.

[0043] The present application can reduce the discomfort during the process of breast compression stimulation, and better improve the user experience. Specifically, by arranging the first negative pressure cavity 4 and the second negative pressure cavity 5 in communication, since the first negative pressure cavity 4 is close to the position of the horn cover 20, when the gas enters the second negative pressure cavity 5, the gas can enter the first negative pressure cavity 4, forming an effective negative pressure area, which helps to ensure the consistency of the breast pumping effect, so that the breast extending into the breast pumping cavity 21 can be stimulated by the elastic deformation area 26, which helps to simulate the natural sucking rhythm of the baby, improves the breast pumping efficiency, and better improves the user experience.

[0044] In addition, the present application can also avoid the problem of local pain caused by the negative pressure between the suction bowl and the bowl groove during the suction process of the negative pressure formed after the deformation of the suction bowl in the prior art. The present application simulates the natural sucking rhythm of the baby by compressing the breast and even the surrounding side of the areola, which can reduce the pain and discomfort of the nipple during the process of breast compression stimulation.

[0045] Optionally, in some embodiments, the pressure source is not limited to being composed of a motor, a pump body, a solenoid valve, a control unit and the like.

[0046] Further, as a preferred embodiment of the present application, the milk storage container can store the emulsion, while reducing direct contact of external dust and bacteria with the emulsion, ensuring the hygiene and safety during the emulsion collection process. The cover assembly 2 is connected in the shell mounting cavity 11, the shell 1 can provide certain protection and support for the cover assembly 2, and the first negative pressure cavity 4 and the second negative pressure cavity 5 are formed between the shell 1 and the cover assembly 2, so that the two negative pressure cavities can form pressure changes at the same time, so that the airflow can move in the first negative pressure cavity 4 and the second negative pressure cavity 5, thereby driving the deformation area to deform the position of the horn cover 20 or the breast pumping cavity 21 close to the first negative pressure 4. The elastic deformation area 26 can deform under external force to stimulate the breast, thereby simulating the natural sucking action of the baby.

[0047] Optionally, in some embodiments, the shell 1 is provided with a negative pressure passage 6 communicating with the second negative pressure cavity 5, when gas enters the second negative pressure cavity from the negative pressure passage, the gas can enter the first negative pressure cavity from the second negative pressure cavity, forming an effective negative pressure area.

[0048] Optionally, in some embodiments, the cover assembly 2 and the deformation area are made of silica gel or rubber material.

[0049] Optionally, in some embodiments, the horn cover, the breast pumping cavity and the deformation area are integrally formed, so as to facilitate disassembly and cleaning.

[0050] Optionally, in some embodiments, when the pressure source is working, the gas can enter the second negative pressure cavity 5 from the first negative pressure cavity 4, or enter the first negative pressure cavity 4 from the second negative pressure cavity 5.

[0051] Optionally, in some embodiments, the outer diameter decreases from the horn cover to the other end of the breast pumping cavity, which helps to form a better sealing effect when the cover assembly contacts the breast. When the pressure in the negative pressure cavity changes, the cover assembly will deform accordingly, so as to fit the surface of the object more tightly, reducing the possibility of gas leakage.

[0052] Optionally, in some embodiments, the horn-shaped arrangement of the horn cover can facilitate the breast to extend into the breast pumping cavity, and the horn cover can better fit around the breast, play a better sealing role, prevent gas leakage, and ensure the stability of the internal negative pressure environment when the first negative pressure cavity and the second negative pressure cavity work. In the process of generating negative pressure, a corresponding force can be uniformly applied to the breast, simulating a more natural and comfortable sucking or squeezing effect.

[0053] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 , a breast pump, the first negative pressure cavity 4 is arranged along the periphery of the opening of the breast pumping cavity 21, the deformation area 26 is provided with a deformation structure 28, and the deformation structure 28 is provided with a plurality of and is arranged at intervals.

[0054] Further, as a preferred embodiment of the present application but not limited, the first negative pressure cavity is arranged along the periphery of the opening of the breast pumping cavity 21, which helps to ensure that the distribution of negative pressure on the breast pumping cavity is more uniform, avoiding excessive deformation or damage of the deformation area due to excessive negative pressure in the local area, and also improving the adaptability of the cover assembly to different sizes of breasts.

[0055] Specifically, the deformation structure can produce more flexible deformation under the action of negative pressure, and can produce soft massage and squeezing effect on the breast. During the breast pumping process, it helps to promote the flow of breast milk in the breast, prevent breast milk accumulation, further improve the pumping efficiency of breast milk, and also relieve breast swelling and pain and other discomfort symptoms to a certain extent.

[0056] Optionally, in some embodiments, a plurality of spaced deformation structures are arranged on the horn cover and / or the breast pumping cavity, and the connection positions between the deformation structures provide additional deformation space for the cover assembly. Specifically, the connection positions between the deformation structures are grooves 29, and the deformation structures can deform in a predetermined manner under the action of negative pressure. The arrangement of the grooves helps the deformation structures to recover to the original shape faster after the pressure is released, thereby improving the elasticity and durability of the cover assembly.

[0057] Optionally, in some embodiments, the horn cover is provided with a deformation structure, which can enable the squeezing part to squeeze and stimulate the position close to the horn cover of the breast.

[0058] Optionally, in some embodiments, the breast pumping cavity is provided with a deformation structure, which can enable the squeezing part to squeeze and stimulate the position close to the breast pumping cavity of the breast.

[0059] Optionally, in some embodiments, the horn cover and the breast pumping cavity are both provided with deformation structures, which can enable the squeezing part to simultaneously squeeze and stimulate the positions close to the horn cover and the breast pumping cavity of the breast.

[0060] As shown in a breast pump, Figures 1 to 4 the deformation structure 28 is provided with a squeezing part 281 close to the horn cover 20, the squeezing part 281 is respectively provided with a first clamping end 2811, a second clamping end 2812, and a fitting end 2813 located between the first clamping end 2811 and the second clamping end 2812, which protrude towards the center of the horn cover 20. During the breast pumping process, when the negative pressure causes the deformation of the deformation area, the squeezing part can simulate the squeezing and massaging action of the lips on the nipple and areola when the baby sucks. The first clamping end and the second clamping end clamp from both sides, and the arc-shaped fitting end fits, forming a similar ring embrace and light clamping stimulation to the breast, promoting the smooth flow of breast milk in the breast towards the nipple, helping to improve the efficiency of breast milk discharge, and making the breast pumping effect better. The targeted squeezing and massaging effect can also play a certain role in dredging the lactiferous duct. Especially for puerpera with less smooth lactiferous duct in the early postpartum period, the repeated action of the squeezing part can help to open the lactiferous duct, prevent breast milk accumulation and lumping, and further ensure that the breast milk can be smoothly pumped out, maintaining the health status of the breast.

[0061] Since the pressing parts are arranged along the circumferential side of the opening of the bell cover, the structure can better fit the natural contour of the breast. When different shapes and sizes of breasts are in contact with the bell cover, the elastic pressing parts make the fitting between the bell cover and the breast more closely and naturally, reducing the possibility of air leakage and avoiding uneven suction caused by loose fitting, thereby improving the comfort of the user during the breast pumping process.

[0062] As shown in Figure 2 and Figure 7 , a breast pump, the pressing parts 281 are provided with multiple and arranged along the circumferential side of the opening of the bell cover 20, and multiple pressing parts 281 are symmetrically arranged.

[0063] Optionally, in some embodiments, the pressing parts are provided with four symmetrically arranged circumferential sides of the opening of the bell cover. The elastic pressing parts press the breast from four directions to the center of the opening of the bell cover, making the fitting between the bell cover and the breast more closely.

[0064] Optionally, in some embodiments, the pressing parts are provided with two symmetrically arranged circumferential sides of the opening of the bell cover. The elastic pressing parts press the breast from two directions to the center of the opening of the bell cover, making the fitting between the bell cover and the breast more closely.

[0065] As shown in Figure 2 and Figure 7 , a breast pump, the cover assembly 2 comprises a support 3 between the shell 1 and the breast pumping cavity 21, the first negative pressure cavity 4 is located between the support 3 and the breast pumping cavity 21, the outer side of the support 3 abuts with the inner wall of the shell mounting cavity 11, and the hardness of the support 3 is greater than the hardness of the side of the breast pumping cavity 21 close to the bell cover 20.

[0066] Further, as a preferred embodiment of the present application but not limited, the support can provide additional support between the breast pumping cavity and the shell, enhancing the structural stability of the entire air path, helping to prevent excessive deformation or damage of the cover assembly under negative pressure, and ensuring that the air path can work stably for a long time. The abutment of the outer side of the support with the inner wall of the shell mounting cavity helps to reduce the gap between the outer wall of the breast pumping cavity and the inner wall of the shell mounting cavity, which can more effectively prevent air leakage and ensure effective transmission of negative pressure.

[0067] Specifically, the hardness of the support is greater than the hardness of the side of the breast pumping cavity close to the bell cover, which can on the one hand protect the cover assembly from damage caused by external impact or wear and tear, prolong the service life of the cover assembly, and on the other hand more accurately control the deformation degree of the pressing parts, meeting different application requirements.

[0068] Optionally, in some embodiments, the support can be made of hard rubber.

[0069] Optionally, in some embodiments, the support member can be made of polypropylene, polyamide, thermoplastic polyurethane elastomer rubber, ethylene-vinyl acetate copolymer, ABS plastic, polycarbonate, etc.

[0070] As shown in Figures 2 to 12 A breast pump, the horn cover 20 and the outside of the breast pumping cavity 21 are provided with a support rib 27 abutting against the support member 3, the support rib 27 is provided with a first abutting end 271, a second abutting end 272 and an avoiding opening 273 between the first abutting end 271 and the second abutting end 272, the support rib 27 is provided with multiple and is arranged at intervals, and the multiple support ribs 27 and the support member 3 form a first negative pressure cavity 4.

[0071] Further, as a preferred embodiment of the present application but not limited, the first abutting end and the second abutting end respectively abutting against the support member reduces the gap between the outer wall of the breast pumping cavity and the support member, which helps to prevent air leakage and improve the sealing performance, the arrangement of the support rib enhances the supportability of the outside of the breast pumping cavity, and the support member together forms the first negative pressure cavity, which improves the structural stability of the entire air path and helps to prevent the breast pumping cavity from excessive deformation under the action of negative pressure, ensuring that the air path can work stably for a long time.

[0072] Specifically, the interval arrangement of the support rib can disperse stress under the action of negative pressure and reduce damage to the breast pumping cavity caused by stress concentration, which helps to prolong the service life of the breast pumping cavity and improve its durability. The support rib divides the first negative pressure cavity into multiple areas, and the avoiding opening allows the multiple areas to communicate with each other, which can affect the distribution and deformation mode of negative pressure on the pressing part, and the negative pressure in each area can drive the pressing part to deform, thereby more accurately controlling the deformation of the entire pressing part.

[0073] Embodiment two

[0074] A breast pump assembly method, the breast pump further comprises a battery assembly and a circuit board assembly, comprising the following steps,

[0075] S1, the pressure source, battery assembly and circuit board assembly are connected on the side of the shell 1 away from the cover assembly 2; specifically, the pressure source is used to generate negative pressure suction for the breast pump, the battery assembly provides power support for the operation of the entire breast pump, and the circuit board assembly plays a role in controlling and coordinating the work of each component, such as controlling the pressure adjustment of the pressure source. Specifically, the pressure source, battery assembly and circuit board assembly can be fixed by installing a support. Further, in order to improve the stability and balance of the whole breast pump, the battery assembly and the pressure source are connected on both sides of the breast cavity, of course, the battery assembly and the pressure source can be arranged left and right, or arranged up and down.

[0076] Optionally, in some embodiments, the pressure source is not limited to being composed of motor, pump body, electromagnetic valve, control unit and other components.

[0077] Optionally, in some embodiments, the negative pressure channel is connected with a pressure source to change the pressure of the first negative pressure cavity and the second negative pressure cavity. The pressure source can be an electric vacuum pump, a microprocessor-controlled air pump, an electromagnetic pump, or other devices that can automatically adjust the pressure. It can also be a manually operated manual air bag or a manually operated piston.

[0078] S2, the assembled cover assembly 2 is inserted into the shell mounting cavity 11; specifically, the cover assembly and the support are detachably connected, and through the cooperation of the first clamping part and the first limiting part, and the second connecting groove and the second clamping part, the connection between the breast cavity and the support can be ensured to be stable, and the high connection strength and stability can help prevent loosening or falling during use.

[0079] S3, the pressure source is communicated with the second negative pressure cavity 5, and the first negative pressure cavity 4 and the second negative pressure cavity 5 are in communication; specifically, the air path connection operation can build a complete and smooth negative pressure generation and transmission channel. In order to make the air flow move more stably, the stimulation of the breast near the horn cover opening position is more gentle.

[0080] Optionally, in some embodiments, the pressure source is connected with the negative pressure channel 6, the negative pressure channel 6 is in communication with the second negative pressure cavity 5, so that the first negative pressure cavity 4 and the second negative pressure cavity 5 are in communication, and the negative pressure generated by the pressure source is transmitted to the second negative pressure cavity through the negative pressure channel, and then the negative pressure is reasonably distributed to the first negative pressure cavity and other parts, so that the cover assembly can generate corresponding deformation under the action of negative pressure, simulate the action of sucking milk by the baby, and suck out the milk. In this way, the first negative pressure cavity and the second negative pressure cavity do not need to be frequently disassembled, and the communication with the pressure source is not smooth. By means of the fixed negative pressure channel, the fixing of the supporting rib, and the sealing effect of the sealing end, the stability of the connection of the cover assembly to the milk suction cavity is ensured every time. When installed, the second opening of the extension part is aligned with the flow guide port, so that the gas movement path of the flow guide cavity and the flow guide port meets the consistency of transmission.

[0081] S4, connecting the cover assembly 2 with the milk storage container 8. The cover assembly is connected with a one-way valve, and the one-way valve functions to ensure that the milk can only flow into the milk storage container in one direction, preventing the milk from flowing back to the horn cover and other parts to cause pollution or other problems. The supporting member on the cover assembly can be connected with the milk storage container by means of clamping connection.

[0082] Optionally, in some embodiments, the cover assembly 2 is connected with the one-way valve first, and then connected with the milk storage container.

[0083] Optionally, in some embodiments, the cover assembly 2 is integrally formed with the one-way valve, and is directly connected with the milk storage container when installed.

[0084] Specifically, in some embodiments, when in use, the horn cover 20 is attached to the breast; the nipple is placed in the milk suction cavity 21, and the protruding position of the horn cover 20 corresponding to the protruding position is wrapped around the areola, and a certain pre-pressure is applied to the areola; after the breast pump is started, the air pump and the electromagnetic valve on the pressure source draw air in the first negative pressure cavity 4 through the negative pressure channel 6, the first negative pressure cavity 4 forms a vacuum, the corresponding protruding position of the pressing part 281 starts to deform inward under the pressure, the space of the first negative pressure cavity becomes smaller, the silicone wrapped around the areola position moves away from the areola, and the milk is sucked out and flows into the milk storage container through the one-way valve;

[0085] When the electromagnetic valve blocks the air pump from drawing air, the first negative pressure cavity 4 is refilled with air, the internal and external pressures are consistent, the corresponding protruding position of the first negative pressure cavity 4 returns to its original state and presses against the areola, and the milk suction is completed; the cycle is repeated until a milk suction period is completed.

[0086] Embodiment three

[0087] Embodiment three is based on embodiment one and has the following implementation manners:

[0088] For example, Figure 2 and Figure 7The breast pump shown has a breast pump chamber 21 with an extension 251 extending outward therefrom. The extension 251 has a first opening 2511 communicating with the first negative pressure chamber 4, a second opening 2512 communicating with the second negative pressure chamber 5, and a connecting channel 23 connecting the first opening 2511 and the second opening 2512.

[0089] Specifically, the connecting channel 23 is located between the inner wall of the housing mounting cavity 11 and the outer wall of the milk suction cavity 21. The portion of the outer wall of the milk suction cavity 21 that protrudes towards the housing 1 separates the first negative pressure cavity 4 and the second negative pressure cavity 5 between the housing 1 and the cover assembly 2, and the connecting channel 23 is located on the protruding portion of the outer wall of the milk suction cavity 21.

[0090] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the extension portion enables the connecting channel to connect the first negative pressure chamber and the second negative pressure chamber more directly, reducing the path length of pressure transmission and possible leakage points, which helps to improve the accuracy and efficiency of negative pressure transmission and ensures that the extrusion portion can deform under the drive of the negative pressure change in the first negative pressure chamber.

[0091] Optionally, in some embodiments, the extension direction is perpendicular to the length extension direction of the milk suction cavity.

[0092] Optionally, in some embodiments, the outer diameter of the extension is larger than the inner diameter of the milk suction cavity.

[0093] Specifically, by providing a first opening on the extension that communicates with the first negative pressure chamber and a second opening on the extension that communicates with the second negative pressure chamber, the distribution of negative pressure on the extrusion section can be controlled more flexibly, avoiding excessive local pressure or uneven deformation of the extrusion section, thereby improving the adaptability and service life of the extrusion section. Furthermore, the extension structure is relatively stable and can withstand greater pressure changes, protecting the connection channels and contributing to enhanced structural stability, durability, and reliability of the entire gas circuit assembly.

[0094] like Figure 8 The breast pump shown has an extension 251 with a sealing end 254 that abuts against the inner side of the housing mounting cavity 11. The sealing end 254 is arranged along the outer periphery of the extension 251. The second negative pressure cavity 5 is located in the space formed by the sealing end 254, the extension 251, and the inner side of the housing mounting cavity 11. A deformation gap 2541 is provided between the sealing end 254 and the end of the extension 251.

[0095] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the deformation gap between the sealing end and the extension allows for more precise assembly of the housing and cover assembly. When the sealing end is positioned along the outer periphery of the extension and tightly abuts against the inner side of the housing mounting cavity, air leakage can be effectively prevented, improving the sealing performance of the air circuit assembly. The sealing end, the extension, and the inner side of the housing mounting cavity together enclose and form a second negative pressure chamber, which helps ensure a more uniform distribution of negative pressure within the second negative pressure chamber.

[0096] like Figures 7 to 12 The breast pump shown has a housing 1 with a guide flange 12 protruding toward the extension 251 and a negative pressure channel 6 communicating with the second negative pressure chamber 5. The second negative pressure chamber 5 has a guide cavity 51 located inside the housing mounting cavity 11 and between the guide flange 12. The guide cavity 51 communicates with the negative pressure channel 6. The second opening 2512 of the extension faces the guide cavity 51. The guide cavity 51 is annularly arranged and has a guide port 511 facing the second opening 2512 of the extension.

[0097] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the protruding design of the guide flange not only increases the structural strength of the housing but also serves to guide airflow by forming a guide cavity with the inner wall of the housing mounting cavity. This allows the airflow to enter the guide cavity more smoothly and then through the guide port into the second negative pressure chamber, thereby enhancing the negative pressure suction effect. The connection between the guide cavity and the negative pressure channel provides a smoother and more efficient path for the airflow within the second negative pressure chamber, helping to ensure a more uniform distribution of negative pressure within both the guide cavity and the second negative pressure chamber, thus improving the efficiency of negative pressure suction.

[0098] Specifically, when the distance between the guide flange and the end of the milk suction chamber is large, the space of the second negative pressure chamber is larger. When the breast is inserted into the milk suction chamber, the end of the milk suction chamber can deform to a certain extent, thereby creating negative pressure in the milk suction chamber. When the distance between the guide flange and the end of the milk suction chamber is small, the space of the second negative pressure chamber is smaller. When the breast is inserted into the milk suction chamber, the airflow quickly enters the second opening of the extension through the guide chamber, and enters the first negative pressure chamber through the connecting channel, thereby squeezing and stimulating the breast near the opening of the horn cover or the milk suction chamber.

[0099] like Figures 7 to 12 As shown, it includes a pressure source 7 connected to the negative pressure channel 6, the connection channel 23 is arranged in a straight line, and the outer side of the cover assembly 2 is provided with a flow guide 253 near the first opening 2511 of the extension and for guiding the flow. The flow guide 253 is provided with a flow guide surface 2531 on the side facing the first opening 2511 of the extension.

[0100] Further, as a preferred embodiment of the present application but not limited, by optimizing the airflow path and reducing the airflow resistance in the connecting channel, it helps to reduce the noise and vibration generated during the negative pressure suction process. Specifically, the connecting channel is arranged in a straight line, reducing the turning and resistance of the airflow in the connecting channel, so that the airflow can flow more smoothly, helping to ensure the stability and efficiency of the airflow during the negative pressure suction process. The arrangement of the flow guide part and its flow guide surface towards the first opening of the extension part plays a role in guiding the airflow. It enables the airflow to enter the first negative pressure cavity more directly from the connecting channel, or from the first negative pressure cavity to the first opening of the extension part, thereby enhancing the effect of negative pressure suction.

[0101] The negative pressure generated by the pressure source is transmitted to the second negative pressure cavity 5 through the negative pressure channel 6, and then the negative pressure is reasonably distributed to the first negative pressure cavity 4 through the connecting channel 23 on the cover assembly 2, so that the first negative pressure cavity 4 and the second negative pressure cavity 5 are connected. When the pressure source is working, the gas can enter the second negative pressure cavity 5 from the first negative pressure cavity 4 through the connecting channel 23 on the cover assembly 2, or enter the first negative pressure cavity 4 from the second negative pressure cavity 5 through the connecting channel 23 on the cover assembly 2.

[0102] As shown in Figures 2 to 5 , Figures 7 to 12 A breast pump, as shown in the drawings, the horn cover 20 is provided with a first clamping part 241, the extension part 251 is provided with a second connecting groove 2513, and the support 3 is provided with a first limiting part 31 matched with the first clamping part 241 and a second clamping part 32 matched with the second connecting groove 2513.

[0103] Further, as a preferred embodiment of the present application but not limited, by the cooperation of the first clamping part and the first limiting part, the second connecting groove and the second clamping part, the connection between the breast pumping cavity and the support can be ensured to be stable, with higher connection strength and stability, which helps to prevent loosening or falling off during use.

[0104] Specifically, the clamping connection design makes the breast pumping cavity and the support convenient to disassemble and reassemble, which helps users to clean and disinfect thoroughly after use, ensuring the hygiene of the breast pump. Users only need to align the corresponding connection matching positions and press gently to complete the connection. By reducing the assembly difficulty, the user experience can be improved.

[0105] Specifically, the support is connected with the milk suction cavity and the extension through a snap connection, providing additional strength support for the entire structure, helping to ensure that the entire cover assembly can withstand certain pressure and tension during use, thereby prolonging its service life. By adjusting the design of the milk suction cavity, the support can be adapted to different models or specifications of the horn cover and milk suction cavity. Thus, the flexibility and applicability of the breast pump are improved, allowing more users to choose a product that suits their needs.

[0106] Optionally, in some embodiments, the first snap part and the first limiting part can be tightly connected through an interference fit.

[0107] Optionally, in some embodiments, the first snap part and the first limiting part can be tightly connected through a card slot connection.

[0108] Optionally, in some embodiments, the second snap part and the second connecting slot can be connected through a snap connection.

[0109] Of course, in some other embodiments, the first snap part can be provided on the support, and the first limiting part can be provided on the horn cover.

[0110] Of course, in some other embodiments, the second snap part can be provided on the extension, and the second connecting slot can be provided on the support.

[0111] Specifically, the modular design and simple assembly steps allow users to easily assemble and disassemble the components, making cleaning and maintenance easy. The correct connection and fixation of the components enhance the structural stability and sealing effect of the entire breast pump, the smooth communication between the negative pressure channel and the second negative pressure cavity, the connecting channel, and the first negative pressure cavity, ensuring uniform distribution of negative pressure and a soft sucking sensation, improving user comfort. The assembly method of the present application is convenient and can ensure consistency every time it is assembled, preventing deviation of the airway connection, improving the sealing effect during use and the stability of the suction negative pressure process, effectively improving the efficiency of breast pumping and user experience.

[0112] Embodiment Four

[0113] The difference between Embodiment Four and Embodiment Three is that the connecting channel 23 is located on the shell 1, so that the first negative pressure cavity 4 and the second negative pressure cavity 5 are in communication. When the pressure source is working, gas can enter the second negative pressure cavity 5 from the first negative pressure cavity 4 through the connecting channel 23 on the shell 1, or enter the first negative pressure cavity 4 from the second negative pressure cavity 5 through the connecting channel 23 on the shell 1. Specifically, the inner wall of the shell mounting cavity 11 is provided with a part protruding towards the cover assembly 2, which separates the first negative pressure cavity 4 and the second negative pressure cavity 5 between the shell 1 and the cover assembly 2, and the connecting channel 23 is located on the protruding part of the inner wall of the shell mounting cavity 11.

[0114] Example 5

[0115] The difference between Embodiment 5 and Embodiment 3 is that the connecting channel 23 is partly located on the protruding part of the inner wall of the housing mounting cavity 11 and partly located on the protruding part of the outer wall of the milk suction cavity 21. When the housing 1 is connected to the cover assembly 2, it can be enclosed to form the connecting channel 23.

[0116] Example 6

[0117] The difference between Example 6 and Example 1 is as follows: Figures 13 to 15 The breast pump shown has a deformable structure 28 with a squeezing part 281 near the horn cover 20 and a protrusion 282 connected to the squeezing part 281 and located in the first negative pressure chamber 4. A first gap 260 is provided between the protrusion 282 and the support member 3.

[0118] Specifically, the deformation zone achieves the effect of an infant sucking by expanding and contracting the area inward and expanding outward through the filling and releasing of negative pressure. When the deformation of the deformation zone reaches a certain amount, the first gap provides space for the protrusion to deform. The protrusion located in the first negative pressure chamber moves in the first gap. When the protrusion located inside the first negative pressure chamber moves inward, it drives the squeezing part outside the first negative pressure chamber to move in the same direction.

[0119] Optionally, in some embodiments, the protrusion moves within the first gap and abuts against the support, thus allowing the deformation of the protrusion to be controlled by a limiting mechanism. When the negative pressure in the first negative pressure chamber changes again, the elastic protrusion can transition from the abutting state with the support to a reset state.

[0120] Of course, in this embodiment, the extrusion part 281 may also have a first clamping end 2811, a second clamping end 2812 and a fitting end 2813 to improve the extrusion efficiency.

[0121] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A breast pump, comprising a housing (1), a pressure source (7), and a milk storage container (8), characterized in that: The housing (1) is provided with a housing mounting cavity (11) and a cover assembly (2) connected to the housing mounting cavity (11). The cover assembly (2) includes a horn cover (20) and a milk suction cavity (21) integrally connected with the horn cover (20). A first negative pressure cavity (4) and a second negative pressure cavity (5) are provided between the cover assembly (2) and the housing (1). The first negative pressure cavity (4) is located on the side close to the horn cover (20), and the second negative pressure cavity (5) is located on the side away from the horn cover (20). The housing (1) is provided with a negative pressure channel (6) connected with the second negative pressure cavity (5). A deformation area (26) is provided on the side of the horn cover (20) and / or the milk suction cavity (21) close to the first negative pressure cavity (4). The deformation area (26) is made of elastic material. The cover assembly (2) includes a support member (3) located between the housing (1) and the milk suction chamber (21), and the first negative pressure chamber (4) is located between the support member (3) and the milk suction chamber (21); The milk suction chamber (21) is provided with an extension (251) extending outward therefrom. The extension (251) is provided with a first opening (2511) communicating with the first negative pressure chamber (4), a second opening (2512) communicating with the second negative pressure chamber (5), and a connecting channel (23) connecting the first opening (2511) and the second opening (2512).

2. A breast pump according to claim 1, characterized in that: The first negative pressure chamber (4) is arranged around the opening of the milk suction chamber (21), and the deformation area (26) is provided with a deformation structure (28), and the deformation structure (28) is provided in multiple and spaced apart.

3. A breast pump according to claim 2, characterized in that: The deformable structure (28) is provided with a pressing part (281) near the horn cover (20). The pressing part (281) is provided with a first clamping end (2811), a second clamping end (2812) protruding towards the center of the horn cover (20), and a fitting end (2813) located between the first clamping end (2811) and the second clamping end (2812).

4. A breast pump according to claim 2, characterized in that: The outer side of the support member (3) abuts against the inner wall of the housing mounting cavity (11), and the hardness of the support member (3) is greater than the hardness of the milk suction cavity (21) on the side near the horn cover (20).

5. A breast pump according to claim 2, characterized in that: The deformable structure (28) is provided with a compression part (281) near the horn cover (20) and a protrusion (282) connected to the compression part (281) and located in the first negative pressure cavity (4). A first gap (260) is provided between the protrusion (282) and the support member (3).

6. A breast pump according to claim 1, characterized in that: The horn cover (20) and the outside of the milk suction chamber (21) are provided with a support rib (27) that abuts against the support member (3). The support rib (27) is provided with a first abutting end (271), a second abutting end (272) that abuts against the support member (3), and a clearance opening (273) located between the first abutting end (271) and the second abutting end (272). There are multiple support ribs (27) that are spaced apart. The multiple support ribs (27) and the support member (3) enclose a first negative pressure chamber (4).

7. A breast pump according to claim 1, characterized in that: The end of the extension (251) is provided with a sealing end (254) that abuts against the inner side of the housing mounting cavity (11). The sealing end (254) is arranged along the outer periphery of the extension (251). The second negative pressure cavity (5) is located in the space formed by the sealing end (254), the extension (251), and the inner side of the housing mounting cavity (11). A deformation gap (2541) is provided between the sealing end (254) and the end of the extension (251).

8. A breast pump according to claim 1, characterized in that: The second negative pressure chamber (5) is located on the side away from the opening of the horn cover (20). The housing (1) is provided with a guide flange (12) protruding in the direction of the extension (251). The second negative pressure chamber (5) is provided with a flow guide chamber (51) located between the inner side of the housing (1) and the guide flange (12). The flow guide chamber (51) is connected to the negative pressure channel (6). The flow guide chamber (51) is arranged in an annular shape and is provided with a flow guide port (511) facing the second opening (2512) of the extension.

9. A method for assembling a breast pump as described in any one of claims 1-8, wherein the breast pump further comprises a battery assembly and a circuit board assembly, characterized in that: Includes the following steps, S1. Connect the pressure source (7), battery assembly and circuit board assembly to the side of the housing (1) away from the cover assembly (2); S2. Insert the assembled cover assembly (2) into the housing mounting cavity (11). S3. Connect the pressure source (7) to the second negative pressure chamber (5), and the first negative pressure chamber (4) and the second negative pressure chamber (5) are in a connected state; S4. Connect the cover assembly (2) to the milk storage container (8).

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