Breast pump and assembling method thereof

Abstract

The invention relates to the technical field of breast pumps, in particular 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 installation cavity and a cover body assembly connected to the shell installation cavity, and the cover body assembly comprises a horn cover and a milk sucking cavity integrally communicated with the horn cover; a first negative pressure cavity and a second negative pressure cavity which are communicated are formed between the cover body assembly and the shell, the first negative pressure cavity is located on the side close to the horn cover, the second negative pressure cavity is located on the side away from the horn cover, and the shell is provided with a negative pressure channel communicated with the second negative pressure cavity. The side, close to the first negative pressure cavity, of the horn cover and / or the milk sucking cavity is provided with a deformation area, and the deformation area is made of elastic materials. According to the invention, the natural sucking rhythm of an infant can be simulated, and the use experience of a user is better improved while the milk sucking efficiency is effectively improved.

Description

Technical Field

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

[0002] A breast pump is a tool that helps mothers collect breast milk, especially for those who are unable to breastfeed directly or need to store breast milk for later use. The design of a breast pump can imitate the sucking action of a baby, effectively stimulating the breasts to secrete milk and extract it.

[0003] For example, the electric breast pump disclosed in Chinese patent document CN215840771U has a sealing structure between the suction bowl, the bowl groove and the negative pressure chamber to ensure air tightness. The suction bowl is connected to the end of the extension part. After the suction bowl is deformed, negative pressure is formed between the suction bowl and the bowl groove to squeeze and stimulate the breast. This suction method cannot completely simulate the sucking action of the baby, resulting in the user being unable to effectively squeeze out the milk.

[0004] Therefore, there is a need to improve the breast pump to increase the efficiency of squeezing out the milk and better enhance the user experience. Summary of the invention

[0005] In view of the technical problem that the above-mentioned suction method cannot completely simulate the sucking action of the baby, resulting in the user being unable to effectively squeeze out the lotion, the technical solution adopted by the present invention to solve the technical problem is: A breast pump comprises a shell, a pressure source and a milk storage container, the shell being provided with a shell mounting cavity and a cover assembly connected to the shell mounting cavity, the cover assembly comprising a horn cover and a milk suction cavity integrally connected to the horn cover, a first negative pressure cavity and a second negative pressure cavity being connected to the shell being provided between the horn cover assembly and the shell, the first negative pressure cavity being located on a side close to the horn cover, the second negative pressure cavity being located on a side away from the horn cover, the shell being provided with a negative pressure channel connected to the second negative pressure cavity, a deformation zone being provided on a side of the horn cover and / or the milk suction cavity close to the first negative pressure cavity, and the deformation zone being made of an elastic material.

[0006] Furthermore, in some embodiments of the present invention, the first negative pressure chamber is arranged along the circumference of the opening of the milk suction chamber, the deformation zone is provided with a deformation structure, and the deformation structure is provided in plurality and arranged at intervals.

[0007] Furthermore, in some embodiments of the present invention, the deformation structure is provided with an extrusion portion close to the speaker cover, and the extrusion portion is respectively provided with a first clamping end protruding toward the center of the speaker cover, a second clamping end, and a fitting end located between the first clamping end and the second clamping end.

[0008] Furthermore, in some embodiments of the present invention, the cover body assembly includes a support member located between the shell and the milk suction chamber, the first negative pressure chamber is located between the support member and the milk suction chamber, the outer side of the support member abuts against the inner wall of the shell mounting chamber, and the hardness of the support member is greater than the hardness of the milk suction chamber on the side close to the horn cover.

[0009] Furthermore, in some embodiments of the present invention, the deformation structure is provided with an extrusion portion close to the horn cover, a protrusion connected to the extrusion portion and located in the first negative pressure cavity, and a first gap is provided between the protrusion and the support member.

[0010] Furthermore, in some embodiments of the present invention, a support rib abutting against the support member is provided between the horn cover and the outer side of the milk suction chamber, the support rib is provided with a first abutting end and a second abutting end respectively abutting against the support member, and an escape opening located between the first abutting end and the second abutting end, the support rib is provided in plurality and arranged at intervals, and the plurality of support ribs and the support member enclose a first negative pressure chamber.

[0011] Furthermore, in some embodiments of the present invention, the milk suction chamber is provided with an extension portion extending toward its outside, and the extension portion is provided with a first extension portion opening communicating with the first negative pressure chamber, a second extension portion opening communicating with the second negative pressure chamber, and a connecting channel connected between the first extension portion opening and the second extension portion opening.

[0012] Furthermore, in some embodiments of the present invention, the end of the extension portion is provided with a sealing end abutting against the inner side of the shell mounting cavity, the sealing end is arranged along the outer periphery of the extension portion, the second negative pressure cavity is located in the space enclosed by the sealing end, the extension portion, 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 portion.

[0013] Further, in some embodiments of the present invention, the second negative pressure chamber is located on a side away from the first opening, the shell is provided with a guide flange protruding toward the extension portion, and a negative pressure channel connected to the second negative pressure chamber, the second negative pressure chamber is provided with a guide chamber located between the inner side of the shell and the guide flange, the guide chamber is connected to the negative pressure channel, the guide chamber is arranged in an annular shape and is provided with a guide port facing the second opening of the extension portion.

[0014] Furthermore, the present invention also provides an assembly method of the above-mentioned breast pump, wherein the breast pump further comprises a battery assembly and a circuit board assembly, comprising the following steps: S1, connecting the pressure source, the battery assembly and the circuit board assembly to a side of the housing away from the cover assembly; S2, inserting the assembled cover assembly into the housing installation cavity; S3, connecting the pressure source to the second negative pressure chamber, so that the first negative pressure chamber and the second negative pressure chamber are in a connected state; S4, connecting the cover assembly to the milk storage container.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention provides a first negative pressure chamber and a second negative pressure chamber that are connected. Since the first negative pressure chamber is close to the position of the horn cover, when the gas enters the second negative pressure chamber, the gas can enter the first negative pressure chamber from the second negative pressure chamber to form an effective negative pressure area, which helps to ensure the consistency of the milk suction effect. The elastic deformation zone can squeeze and stimulate the breast extending into the milk suction chamber, which helps to simulate the natural sucking rhythm of the baby, effectively improve the milk suction efficiency, and better enhance the user experience.

[0016] 2. The assembly method of the present invention is convenient, can ensure the consistency of each assembly, will not cause deviation of the airway connection in the breast pump, improves the sealing effect during use and the stability of the suction negative pressure process, and effectively improves the milk suction efficiency and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front schematic diagram of one embodiment of the present invention.

[0018] Figure 2 for Figure 1 AA section view.

[0019] Figure 3 It is a partial schematic diagram of the cover body assembly of the present invention.

[0020] Figure 4 It is an exploded view of one embodiment of the present invention.

[0021] Figure 5 It is an exploded view and a partially enlarged view from another perspective of one embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of another embodiment of the present invention.

[0023] Figure 7 for Figure 6 BB cross-sectional view.

[0024] Figure 8 for Figure 7 Enlarged view of part D.

[0025] Fig. 9 for Figure 6 Another cross-sectional view of BB.

[0026] Fig.10 for Figure 6 CC cross-sectional view.

[0027] Fig.11 It is an exploded view and a partially enlarged view of another embodiment of the present invention.

[0028] Fig.12 It is an exploded view and a partially enlarged view of another embodiment of the present invention.

[0029] Fig.13 It is a front schematic diagram of another embodiment of the present invention.

[0030] Fig.14 for Fig.13 EE cross-sectional view.

[0031] Fig.15 It is a partial schematic diagram of a cover assembly in another embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. 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.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Embodiment 1 like Figures 1 to 12A breast pump shown in the figure 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 milk suction cavity 21 integrally connected to the horn cover 2, a first negative pressure cavity 4 and a second negative pressure cavity 5 connected to each other are provided between the cover assembly 2 and the shell 1, the first negative pressure cavity 4 is located on a side close to the horn cover 20, the second negative pressure cavity 5 is located on a side away from the horn cover 20, a deformation zone 26 is provided on a side of the horn cover 20 and / or the milk suction cavity 21 close to the first negative pressure cavity 4, and the deformation zone 26 is made of elastic material.

[0036] The present invention can reduce the discomfort during the breast squeezing and stimulating process, and better improve the user experience. Specifically, the present invention sets a first negative pressure chamber 4 and a second negative pressure chamber 5 that are connected. Since the first negative pressure chamber 4 is close to the position of the horn cover 20, when the gas enters the second negative pressure chamber 5, the gas can enter the first negative pressure chamber 4 to form an effective negative pressure area, which helps to ensure the consistency of the milk suction effect, so that the breast extending into the milk suction chamber 21 can be squeezed and stimulated through the elastic deformation zone 26, which helps to simulate the natural sucking rhythm of the baby, improve the milk suction efficiency, and better improve the user experience.

[0037] In addition, the present invention can also avoid the problem of local swelling and pain caused by negative pressure pulling the breast during the suction process when the suction bowl is deformed and negative pressure is formed between the bowl groove in the prior art. The present invention imitates the natural sucking rhythm of the baby by squeezing the breast and even the side around the areola, which can reduce nipple pain and discomfort during the breast squeezing and stimulation process.

[0038] Optionally, in some embodiments, the pressure source is not limited to being composed of components such as a motor, a pump body, a solenoid valve, and a control unit.

[0039] Further, as a preferred embodiment of the present invention but not limited thereto, the milk storage container can store the milk, and at the same time can reduce the direct contact between external dust and bacteria and the milk, and ensure the sanitation and safety during the milk collection process, the cover assembly 2 is connected in the housing installation cavity 11, the housing 1 can provide certain protection and support for the cover assembly 2, and a first negative pressure cavity 4 and a second negative pressure cavity 5 are formed between the housing 1 and the cover assembly 2, which can make the two negative pressure cavities 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 zone through the negative pressure change, and deforming the position of the horn cover 20 or the milk suction cavity 21 close to the first negative pressure 4. The elastic deformation zone 26 can be deformed under the action of external force to stimulate the breast to be squeezed, thereby imitating the natural sucking action of the baby.

[0040] Optionally, in some embodiments, the shell 1 is provided with a negative pressure channel 6 connected to the second negative pressure chamber 5. When the gas enters the second negative pressure chamber from the negative pressure channel, the gas can enter the first negative pressure chamber from the second negative pressure chamber to form an effective negative pressure area.

[0041] Optionally, in some embodiments, the cover assembly 2 and the deformation zone are made of silicone or rubber material.

[0042] Optionally, in some embodiments, the horn cover, the milk suction chamber and the deformation zone are integrally formed to facilitate disassembly, assembly and cleaning.

[0043] Optionally, in some embodiments, when the pressure source is working, gas can enter the second negative pressure chamber 5 from the first negative pressure chamber 4 , or enter the first negative pressure chamber 4 from the second negative pressure chamber 5 .

[0044] Optionally, in some embodiments, the outer diameter of the horn shell to the other end of the milk suction chamber is reduced to help form a better sealing effect when the mask assembly contacts the breast. When the pressure in the negative pressure chamber changes, the mask assembly will deform accordingly, thereby fitting more closely to the surface of the object and reducing the possibility of gas leakage.

[0045] Optionally, in some embodiments, the trumpet-shaped setting of the trumpet cover can facilitate the breast to enter the milk suction cavity, and the trumpet cover can fit better around the breast to perform a better sealing function, 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 are working. In the process of generating negative pressure, the corresponding force can be applied to the breast more evenly to simulate a more natural and comfortable sucking or squeezing effect.

[0046] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 In the breast pump shown, the first negative pressure chamber 4 is arranged along the peripheral side of the opening of the milk suction chamber 21, the deformation zone 26 is provided with a deformation structure 28, and the deformation structure 28 is provided in plurality and arranged at intervals.

[0047] Furthermore, as a preferred embodiment of the present invention but not a limitation, the first negative pressure chamber is arranged along the peripheral side of the opening of the milk suction chamber 21. Such a layout helps to ensure that the negative pressure is more evenly distributed on the milk suction chamber, avoiding excessive deformation or damage of the deformation zone due to excessive negative pressure in local areas, and also improves the adaptability of the mask assembly to breasts of different sizes.

[0048] Specifically, the deformation structure can produce more flexible deformation under the action of negative pressure, which can produce a gentle massage and squeezing effect on the breast. During the milk extraction process, it helps to promote the flow of milk in the breast, prevent milk stasis, further improve the efficiency of milk extraction, and also relieve discomfort symptoms such as breast pain to a certain extent.

[0049] Optionally, in some embodiments, a plurality of spaced deformable structures are provided on the horn cover and / or the milk suction chamber, and the connection positions between the deformable structures provide additional deformation space for the cover assembly. Specifically, the connection positions between the deformable structures are grooves 29, and the deformable structures can be deformed in a predetermined manner under the action of negative pressure. The provision of the grooves helps to restore the deformable structures to their original shape more quickly after the pressure is released, thereby improving the elasticity and durability of the cover assembly.

[0050] Optionally, in some embodiments, the horn cover is provided with a deformation structure, which enables the squeezing portion to squeeze and stimulate the position of the breast close to the horn cover.

[0051] Optionally, in some embodiments, the milk suction cavity is provided with a deformation structure, which enables the squeezing part to squeeze and stimulate the position of the breast close to the milk suction cavity.

[0052] Optionally, in some embodiments, the horn cover and the milk suction chamber are both provided with a deformation structure, which enables the squeezing part to squeeze and stimulate the position of the breast close to the horn cover and the milk suction chamber at the same time.

[0053] like Figures 1 to 4 A breast pump is shown, wherein the deformation structure 28 is provided with a squeezing portion 281 close to the horn cover 20, and the squeezing portion 281 is respectively provided with a first clamping end 2811 protruding toward the center of the horn cover 20, a second clamping end 2812, and a fitting end 2813 located between the first clamping end 2811 and the second clamping end 2812. During the milk-sucking process, when negative pressure is generated to deform the deformation zone, the squeezing portion can simulate the squeezing and massaging action of the nipple and areola by the lips of the baby when sucking. The first clamping end and the second clamping end are clamped from both sides, and the arc-shaped fitting end is fitted, which forms a stimulation similar to hugging and light clamping on the breast, promotes the milk in the breast to flow more smoothly toward the nipple, helps to improve the efficiency of milk discharge, and makes the milk-sucking effect better. The targeted squeezing and massaging effect can also play a certain role in clearing the mammary duct. Especially for mothers whose mammary ducts are not unobstructed in the early postpartum period, the repeated action of the squeezing part can help open the mammary ducts, prevent problems such as milk congestion and agglomeration, further ensure that the milk can be smoothly sucked out, and maintain the health of the breasts.

[0054] Since the squeezing part is arranged along the peripheral side of the opening of the horn cover, its structure can better fit the natural contour of the breast. When breasts of different shapes and sizes come into contact with the horn cover, the elastic squeezing part makes the fit between the horn cover and the breast more tight and natural, reduces the possibility of air leakage, and also avoids the uneven suction caused by loose fit, thus improving the user's comfort during milk pumping.

[0055] like Figure 2 and Figure 7 In the breast pump shown, the squeezing parts 281 are provided in plurality and are arranged along the circumference of the horn cover 20 , and the plurality of squeezing parts 281 are symmetrically arranged.

[0056] Optionally, in some embodiments, four squeezing parts are symmetrically arranged around the opening of the speaker cover. The elastic squeezing parts squeeze the breast from four directions toward the center of the speaker cover opening, so that the fit between the speaker cover and the breast is tighter.

[0057] Optionally, in some embodiments, two squeezing parts are symmetrically arranged around the opening of the speaker cover. The elastic squeezing parts squeeze the breast from two directions toward the center of the opening of the speaker cover, so that the fit between the speaker cover and the breast is tighter.

[0058] like Figure 2 and Figure 7 A breast pump is shown, wherein the cover body assembly 2 includes a support member 3 located between the shell 1 and the milk suction chamber 21, the first negative pressure chamber 4 is located between the support member 3 and the milk suction chamber 21, the outer side of the support member 3 abuts against the inner wall of the shell mounting chamber 11, and the hardness of the support member 3 is greater than the hardness of the milk suction chamber 21 on the side close to the horn cover 20.

[0059] Further, as a preferred embodiment of the present invention but not a limitation, the support member can provide additional support between the milk suction chamber and the shell, enhance the structural stability of the entire air path, help prevent the cover assembly from excessive deformation or damage under the action of negative pressure, and ensure that the air path can work stably for a long time. The outer side of the support member abuts against the inner wall of the shell installation chamber, which helps to reduce the gap between the outer wall of the milk suction chamber and the inner wall of the shell installation chamber, and can more effectively prevent air leakage and ensure the effective transmission of negative pressure.

[0060] Specifically, the hardness of the support member is greater than the hardness of the side of the milk suction chamber close to the horn cover. On the one hand, it can protect the cover body assembly from external impact or wear damage to a certain extent, extend the service life of the cover body assembly, and reduce maintenance costs. On the other hand, it can more accurately control the deformation degree of the extrusion part to meet different application requirements.

[0061] Optionally, in some embodiments, the support member may be made of hard rubber.

[0062] Optionally, in some embodiments, the support member can be made of materials such as polypropylene, polyamide, thermoplastic polyurethane elastomer rubber, ethylene-vinyl acetate copolymer, ABS plastic, polycarbonate, etc.

[0063] like Figures 2 to 12 In the breast pump shown in the figure, a support rib 27 abutting against the support member 3 is provided between the horn cover 20 and the outer side of the milk suction chamber 21, and the support rib 27 is provided with a first abutting end 271 and a second abutting end 272 abutting against the support member 3 respectively, and an escape opening 273 located between the first abutting end 271 and the second abutting end 272, and the support rib 27 is provided in plurality and arranged at intervals, and the plurality of support ribs 27 and the support member 3 enclose a first negative pressure chamber 4.

[0064] Furthermore, as a preferred embodiment of the present invention but not a limitation, the close abutment between the first abutting end and the second abutting end and the support member respectively reduces the gap between the outer wall of the milk suction chamber and the support member, helps to prevent air leakage, and improves the sealing performance. The provision of the support ribs enhances the support of the outer side of the milk suction chamber, and together with the support member, forms a first negative pressure chamber, thereby improving the structural stability of the entire air path, helping to prevent excessive deformation of the milk suction chamber under the action of negative pressure, and ensuring that the air path can work stably for a long time.

[0065] Specifically, the spacing of the support ribs can disperse stress under the action of negative pressure and reduce damage to the milk suction chamber caused by stress concentration, which helps to extend the service life of the milk suction chamber and improve its durability. The support ribs divide the first negative pressure chamber into multiple areas, and the multiple areas are interconnected by using the avoidance opening, which can affect the distribution and deformation mode of the negative pressure on the extrusion part. The negative pressure can drive the extrusion part to deform in each area, thereby more accurately controlling the deformation of the entire extrusion part.

[0066] Embodiment 2 A method for assembling a breast pump, wherein the breast pump further comprises a battery assembly and a circuit board assembly, comprising the following steps: S1. Connect the pressure source, battery assembly and circuit board assembly to the side of the shell 1 away from the cover assembly 2; specifically, the pressure source is used to generate negative pressure suction in 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 various components, such as controlling the pressure regulation of the pressure source. Specifically, the pressure source, battery assembly and circuit board assembly can be fixed by installing a bracket. Furthermore, in order to improve the stability and balance of the overall breast pump, the battery assembly and the pressure source are respectively connected to the two sides of the milk suction cavity. Of course, the battery assembly and the pressure source can be set left and right, or up and down.

[0067] Optionally, in some embodiments, the pressure source is not limited to being composed of components such as a motor, a pump body, a solenoid valve, and a control unit.

[0068] Optionally, in some embodiments, a pressure source is connected to the negative pressure channel to change the pressure of the first negative pressure chamber and the second negative pressure chamber. The pressure source can be an electric vacuum pump, a microprocessor-controlled air pump, an electromagnetic pump, or other device that can automatically adjust the pressure, or a manually operated manual air bag, a manual piston, or other device. The negative pressure channel is fixedly arranged on the shell, which can reduce the problems of gas path deviation and misalignment during the use of the mask assembly, and can ensure smooth gas path and consistency of the suction process.

[0069] S2. Extend the assembled cover assembly 2 into the shell mounting cavity 11; specifically, the cover assembly and the support member are detachably connected, and the cooperation between the first clamping portion and the first limiting portion, and the second connecting groove and the second clamping portion can ensure a firm connection between the milk suction cavity and the support member, and high connection strength and stability help prevent loosening or falling off during use.

[0070] S3, connect the pressure source with 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; specifically, the air path connection operation can build a complete and unobstructed negative pressure generation and transmission channel. In order to make the air flow move more stable, the stimulation of the breast near the opening of the horn cover is smoother.

[0071] Optionally, in some embodiments, the pressure source is connected to the negative pressure channel 6, and the negative pressure channel 6 is connected to the second negative pressure chamber 5, so that the first negative pressure chamber 4 and the second negative pressure chamber 5 are in a connected state. The negative pressure generated by the pressure source is transmitted to the second negative pressure chamber through the negative pressure channel, and then the negative pressure is reasonably distributed to the first negative pressure chamber and other parts, so that the cover assembly can produce corresponding deformation under the action of negative pressure, simulating the sucking action of the baby to suck out the milk. This arrangement avoids the poor communication with the pressure source caused by the need to frequently disassemble the first negative pressure chamber and the second negative pressure chamber. With the help of the fixed negative pressure channel, the support ribs are fixed, and the sealing effect of the sealing end ensures the stability of the connection every time the cover assembly is aligned with the milk suction chamber. During installation, the second opening of the extension part is aligned with the guide port, so that the gas movement path of the guide chamber and the guide port meets the consistency of transmission.

[0072] S4, connecting the cover assembly 2 to the milk storage container 8. The cover assembly is connected with a one-way valve, which is used to ensure that milk can only flow into the milk storage container in one direction, and prevent milk from flowing back to the horn cover and other parts to cause pollution or other problems. The support member on the cover assembly can be connected to the milk storage container by a snap connection.

[0073] Optionally, in some embodiments, the cover assembly 2 is first connected to the one-way valve and then connected to the milk storage container.

[0074] Optionally, in some embodiments, the cover assembly 2 and the one-way valve are integrally formed and directly connected to the milk storage container during installation.

[0075] 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 corresponding protruding position of the horn cover 20 is wrapped around the areola, and a certain pre-pressure is applied to the areola; after the breast pump is turned on, the air pump and the solenoid valve on the pressure source extract air from the first negative pressure cavity 4 through the negative pressure channel 6, and the first negative pressure cavity 4 forms a vacuum, and the protruding position corresponding to the squeezing part 281 begins to shrink and deform under pressure, the space of the first negative pressure cavity becomes smaller, and the silicone wrapping the areola position is away from the areola, and the milk is sucked out and flows into the milk storage container along the one-way valve; When the solenoid valve blocks the air pump from extracting air, the first negative pressure chamber 4 is refilled with air, the pressure inside and outside are consistent, and the protruding position corresponding to the first negative pressure chamber 4 returns to its original state to press against the areola, and milk suction ends; this cycle continues until a milk suction cycle ends.

[0076] Embodiment 3 Embodiment 3 Based on Embodiment 1, the following implementation methods are also provided: like Figure 2 and Figure 7 In the breast pump shown in the figure, the milk suction chamber 21 is provided with an extension portion 251 extending outward thereof, the extension portion 251 is provided with a first extension portion opening 2511 communicating with the first negative pressure chamber 4, a second extension portion opening 2512 communicating with the second negative pressure chamber 5, and a connecting channel 23 connected between the first extension portion opening 2511 and the second extension portion opening 2512.

[0077] Specifically, the connecting passage 23 is located between the inner wall of the housing installation cavity 11 and the outer wall of the milk suction cavity 21. The outer wall of the milk suction cavity 21 protrudes toward the housing 1 to separate 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 passage 23 is located on the protruding portion of the outer wall of the milk suction cavity 21.

[0078] Furthermore, as a preferred embodiment of the present invention but not a limitation, the provision of the extension portion enables the connecting channel to more directly connect the first negative pressure chamber and the second negative pressure chamber, reducing the path length and possible leakage points of pressure transmission, helping to improve the accuracy and efficiency of negative pressure transmission, and ensuring that the extrusion portion can be deformed under the influence of the change in negative pressure in the first negative pressure chamber.

[0079] Optionally, in some embodiments, the extension direction of the extension portion is perpendicular to the length extension direction of the milk suction cavity.

[0080] Optionally, in some embodiments, the outer diameter of the extension is greater than the inner diameter of the milk suction cavity.

[0081] Specifically, by providing a first opening of the extension part connected to the first negative pressure chamber and a second opening of the extension part connected to the second negative pressure chamber on the extension part, the distribution of the negative pressure on the extrusion part can be more flexibly controlled to avoid excessive local pressure or uneven deformation of the extrusion part, thereby improving the adaptability and service life of the extrusion part. In addition, the extension part structure is relatively stable and can withstand greater pressure changes, playing a role in protecting the connecting channel, helping to enhance the structural stability of the entire gas path assembly, and improving durability and reliability.

[0082] like Figure 8 In the breast pump shown in the figure, a sealing end 2514 abutting against the inner side of the shell mounting cavity 11 is provided at the end of the extension portion 251, and the sealing end 2514 is arranged along the outer periphery of the extension portion 251, and the second negative pressure cavity 5 is located in a space enclosed by the sealing end 2514, the extension portion 251, and the inner side of the shell mounting cavity 11, and a deformation gap 25141 is provided between the sealing end 2514 and the end of the extension portion 251.

[0083] Furthermore, as a preferred embodiment of the present invention but not a limitation, the deformation gap between the sealing end and the extension portion enables more precise assembly of the shell and the cover assembly. When the sealing end is arranged along the periphery of the extension portion and is in close contact with the inner side of the shell mounting cavity, it can effectively prevent air leakage and improve the sealing performance of the air path assembly. The sealing end, the extension portion and the inner side of the shell mounting cavity together enclose a second negative pressure cavity, which helps to ensure that the negative pressure is more evenly distributed in the second negative pressure cavity.

[0084] like Figures 7 to 12 A breast pump is shown, the shell 1 is provided with a guide flange 12 protruding toward the extension portion 251, and a negative pressure channel 6 connected to the second negative pressure chamber 5, the second negative pressure chamber 5 is provided with a guide chamber 51 located between the inner side of the shell mounting chamber 11 and the guide flange 12, the guide chamber 51 is connected to the negative pressure channel 6, the second opening 2512 of the extension portion faces the guide chamber 51, the guide chamber 51 is arranged in an annular shape and is provided with a guide port 511 facing the second opening 2512 of the extension portion.

[0085] Further, as a preferred embodiment of the present invention but not a limitation, the protruding setting of the guide flange not only increases the structural strength of the shell, but also plays a role in guiding the airflow by forming a guide cavity with the inner wall of the shell installation cavity, so that the airflow can enter the guide cavity more smoothly and enter the second negative pressure cavity through the guide port, thereby enhancing the effect of negative pressure suction. The connection between the guide cavity and the negative pressure channel provides a smoother and more efficient path for the airflow in the second negative pressure cavity, which helps to ensure that the negative pressure is more evenly distributed in the guide cavity and the second negative pressure cavity, thereby improving the efficiency of negative pressure suction.

[0086] 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 large. When the breast is inserted into the milk suction chamber, the end of the milk suction chamber can be deformed to a certain extent, thereby forming a 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 small. When the breast is inserted into the milk suction chamber, the airflow quickly passes through the guide chamber into the second opening of the extension part, and enters the first negative pressure chamber through the connecting channel, thereby squeezing and stimulating the breast close to the opening of the horn cover or the milk suction chamber.

[0087] like Figures 7 to 12 As shown, it includes a pressure source 7 connected to the negative pressure channel 6, the connecting channel 23 is arranged along a straight line, and the outer side of the cover body assembly 2 is provided with a guide portion 252 close to the first opening 2511 of the extension portion and used for guiding flow, and the guide portion 252 is provided with a guide surface 2521 on the side facing the first opening 2511 of the extension portion.

[0088] Furthermore, as a preferred embodiment of the present invention but not limiting, by optimizing the airflow path and reducing the obstruction of the airflow 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 along a straight line, which reduces the turns and obstructions of the airflow in the connecting channel, allowing the airflow to flow more smoothly, helping to ensure the stability and efficiency of the airflow during the negative pressure suction process. The provision of the guide portion and its guide surface facing the first opening of the extension portion play a role in guiding the airflow. It enables the airflow to enter the first negative pressure chamber more directly from the connecting channel, or from the first negative pressure chamber to the first opening of the extension portion, thereby enhancing the effect of negative pressure suction.

[0089] The negative pressure generated by the pressure source is transmitted to the second negative pressure chamber 5 through the negative pressure channel 6, and then the negative pressure is reasonably distributed to the first negative pressure chamber 4 with the help of the connecting channel 23. The connecting channel 23 is located on the mask body assembly 2 so that the first negative pressure chamber 4 and the second negative pressure chamber 5 are connected. When the pressure source is working, the gas can enter the second negative pressure chamber 5 from the first negative pressure chamber 4 through the connecting channel 23 on the mask body assembly 2, or enter the first negative pressure chamber 4 from the second negative pressure chamber 5 through the connecting channel 23 on the mask body assembly 2.

[0090] like Figures 2 to 5, Figures 7 to 12 In the breast pump shown, the horn cover 20 is provided with a first clamping portion 241, the extension portion 251 is provided with a second connecting groove 2513, and the support member 3 is provided with a first limiting portion 31 cooperating with the first clamping portion 241, and a second clamping portion 32 cooperating with the second connecting groove 2513.

[0091] Furthermore, as a preferred embodiment of the present invention but not a limitation, the cooperation between the first engaging portion and the first limiting portion, and the second connecting groove and the second engaging portion can ensure a firm connection between the milk suction chamber and the support member, and a high connection strength and stability can help prevent loosening or falling off during use.

[0092] Specifically, the snap-fit ​​connection design allows the milk suction chamber and the support member to be easily disassembled and reassembled, which helps the user to thoroughly clean and disinfect after use, ensuring the hygiene of the breast pump. The user only needs to align the corresponding connection matching positions and press lightly to complete the connection, which can improve the user experience by reducing the difficulty of assembly.

[0093] Specifically, the support member is connected to the milk suction chamber and the extension part through a snap connection, which provides additional strength support for the entire structure, helps to ensure that the entire cover assembly can withstand a certain amount of pressure and tension during use, thereby extending its service life. By adjusting the design of the milk suction chamber, the support member can be adapted to different models or specifications of horn covers and milk suction chambers. This improves the flexibility and scope of application of the breast pump, allowing more users to choose a product that suits them.

[0094] Optionally, in some embodiments, the first engaging portion and the first limiting portion may be tightly connected by interference fit.

[0095] Optionally, in some embodiments, the first engaging portion and the first limiting portion may be tightly connected by means of a slot connection.

[0096] Optionally, in some embodiments, the second engaging portion and the second connecting groove may be connected by engaging.

[0097] Of course, in some other embodiments, the first engaging portion may be provided on the support member, and the first limiting portion may be provided on the speaker cover.

[0098] Of course, in some other embodiments, the second engaging portion may be provided on the extending portion, and the second connecting groove may be provided on the supporting member.

[0099] Specifically, the modular design and simple assembly steps allow users to easily assemble and disassemble the components, which is convenient for cleaning and maintenance. The correct connection and fixation of the components enhance the structural stability and sealing effect of the entire breast pump. The smooth connection between the negative pressure channel and the second negative pressure chamber, the connecting channel, and the first negative pressure chamber ensures the uniform distribution of negative pressure and a soft sucking feeling, thereby improving the user's comfort. The assembly method of the present invention is convenient, can ensure the consistency of each assembly, will not cause deviation of the airway connection, improves the sealing effect of the use process and the stability of the suction negative pressure process, and effectively improves the milk suction efficiency and user experience.

[0100] Embodiment 4 The difference between the fourth embodiment and the third embodiment is that the connecting channel 23 is located on the shell 1, so that the first negative pressure chamber 4 and the second negative pressure chamber 5 are connected. When the pressure source is working, the gas can enter the second negative pressure chamber 5 from the first negative pressure chamber 4 through the connecting channel 23 on the shell 1, or enter the first negative pressure chamber 4 from the second negative pressure chamber 5 through the connecting channel 23 on the shell 1. Specifically, a portion protruding toward the cover assembly 2 is provided on the inner wall of the shell installation chamber 11 to separate the first negative pressure chamber 4 and the second negative pressure chamber 5 between the shell 1 and the cover assembly 2, and the connecting channel 23 is located on the protruding portion of the inner wall of the shell installation chamber 11.

[0101] Embodiment 5 The difference between the fifth embodiment and the third embodiment is that the connecting channel 23 is partially located on the protruding portion of the inner wall of the shell installation cavity 11, and partially located on the protruding portion of the outer wall of the milk suction cavity 21. When the shell 1 is connected to the cover assembly 2, the connecting channel 23 can be enclosed to form.

[0102] Embodiment 6 The difference between the sixth embodiment and the first embodiment is that: Figures 13 to 15 In the breast pump shown, the deformation structure 28 is provided with an extrusion portion 281 close to the horn cover 20 , a protrusion 282 connected to the extrusion portion 281 and located in the first negative pressure chamber 4 , and a first gap 260 is provided between the protrusion 282 and the support member 3 .

[0103] Specifically, the deformation zone simulates the sucking effect of a baby by expanding and contracting the area inward and outward through charging and discharging negative pressure. When the deformation of the deformation zone reaches a certain amount, the first gap provides space for the protrusion to deform, and the protrusion located in the first negative pressure cavity moves in the first gap. When the protrusion located inside the first negative pressure cavity moves inward, it drives the extrusion part outside the first negative pressure cavity to move in the same direction.

[0104] Optionally, in some embodiments, the protrusion moves in the first gap and abuts against the support member, so the deformation of the protrusion can be controlled by limiting. When the negative pressure of the first negative pressure chamber changes again, the elastic protrusion can be converted from the abutment state with the support member to the reset state.

[0105] Of course, in this embodiment, the extrusion portion 281 may also have a first clamping end 2811, a second clamping end 2812 and a fitting end 2813 to improve the efficiency of extrusion.

[0106] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to 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 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) comprising a speaker cover (20) and a milk suction cavity (21) integrally connected to the speaker cover (20), a first negative pressure cavity (4) and a second negative pressure cavity (5) connected to the shell (1) are provided between the cover assembly (2) and the shell (1), the first negative pressure cavity (4) is located on a side close to the speaker cover (20), and the second negative pressure cavity (5) is located on a side away from the speaker cover (20), the shell (1) is provided with a negative pressure channel (6) connected to the second negative pressure cavity (5), and a deformation zone (26) is provided on a side of the speaker cover (20) and / or the milk suction cavity (21) close to the first negative pressure cavity (4), and the deformation zone (26) is made of elastic material.

2. A breast pump according to claim 1, characterized in that: The first negative pressure chamber (4) is arranged along the peripheral side of the opening of the milk suction chamber (21), the deformation zone (26) is provided with a deformation structure (28), and a plurality of the deformation structures (28) are provided and arranged at intervals.

3. A breast pump according to claim 2, characterized in that: The deformation structure (28) is provided with an extrusion portion (281) close to the speaker cover (20), and the extrusion portion (281) is respectively provided with a first clamping end (2811) protruding toward the center of the speaker cover (20), a second clamping end (2812), 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 cover body assembly (2) comprises a support member (3) located between the shell (1) and the milk suction chamber (21); the first negative pressure chamber (4) is located between the support member (3) and the milk suction chamber (21); the outer side of the support member (3) abuts against the inner wall of the shell mounting chamber (11); and the hardness of the support member (3) is greater than the hardness of a side of the milk suction chamber (21) close to the horn cover (20).

5. A breast pump according to claim 4, characterized in that: The deformation structure (28) is provided with an extrusion portion (281) close to the horn cover (20), a protrusion (282) connected to the extrusion portion (281) and located in the first negative pressure chamber (4), and a first gap (260) is provided between the protrusion (282) and the support member (3).

6. A breast pump according to claim 4, characterized in that: A support rib (27) abutting against the support member (3) is provided between the horn cover (20) and the outer side of the milk suction chamber (21); the support rib (27) is provided with a first abutting end (271) and a second abutting end (272) abutting against the support member (3) respectively, and an escape opening (273) located between the first abutting end (271) and the second abutting end (272); a plurality of the support ribs (27) are provided and are arranged at intervals; the plurality of the 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 milk suction chamber (21) is provided with an extension portion (251) extending toward the outside thereof, and the extension portion (251) is provided with a first extension portion opening (2511) communicating with the first negative pressure chamber (4), a second extension portion opening (2512) communicating with the second negative pressure chamber (5), and a connecting channel (23) connected between the first extension portion opening (2511) and the second extension portion opening (2512).

8. A breast pump according to claim 7, characterized in that: The end of the extension portion (251) is provided with a sealing end (2514) abutting against the inner side of the shell mounting cavity (11); the sealing end (2514) is arranged along the outer periphery of the extension portion (251); the second negative pressure cavity (5) is located in a space enclosed by the sealing end (2514), the extension portion (251) and the inner side of the shell mounting cavity (11); and a deformation gap (25141) is provided between the sealing end (2514) and the end of the extension portion (251).

9. A breast pump according to claim 7, characterized in that: The second negative pressure chamber (5) is located on a side away from the first opening (22); the shell (1) is provided with a guide flange (12) protruding toward the extension portion (25), and a negative pressure channel (6) connected to the second negative pressure chamber (5); the second negative pressure chamber (5) is provided with a guide chamber (51) located between the inner side of the shell (1) and the guide flange (12); the guide chamber (51) is connected to the negative pressure channel (6); the guide chamber (51) is arranged in an annular shape and is provided with a guide port (511) facing the second opening (252) of the extension portion.

10. The method for assembling a breast pump according to any one of claims 1 to 9, wherein the breast pump further comprises a battery assembly and a circuit board assembly, wherein: The following steps are included: S1, connecting the pressure source (7), the battery assembly and the circuit board assembly to a side of the housing (1) facing away from the cover assembly (2); S2, inserting the assembled cover assembly (2) into the housing installation cavity (11); S3, connecting the pressure source (7) to the second negative pressure chamber (5), so that the first negative pressure chamber (4) and the second negative pressure chamber (5) are in a connected state; S4. Connecting the cover assembly (2) to the milk storage container (8).

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